{"id": "train_00001", "split": "train", "clip_key": "titan_clip_1251_000534_movie", "source": {"subset": "titan", "scenario": "clip_1251", "frame": "000534"}, "frames": ["titan_clip_1251_000534_movie_t-3.jpg", "titan_clip_1251_000534_movie_t-2.jpg", "titan_clip_1251_000534_movie_t-1.jpg", "titan_clip_1251_000534_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban shopping street with a narrow single mixed-traffic lane has no center divider, smooth asphalt, and very light motor traffic but heavy pedestrian flow. A pedestrian wearing a cap and black T-shirt stands at the left edge near storefronts, paused close to the lane and potentially entering the path. Ahead on the right, two pedestrians including one carrying a white umbrella walk away along the lane, occupying the roadway. Farther ahead near the center, several people cross casually mid block, intermittently blocking the way. A small car is visible in the distance among the crowd, creeping behind the pedestrians. Shops line both sides, creating tight clearances.", "hazard_reasoning": "A pedestrian wearing a cap and black t-shirt is standing on the left side of the road. This pedestrian may step into the vehicle's path unexpectedly, so the driver should manoeuvre carefully around them to avoid collision."}
{"id": "train_00002", "split": "train", "clip_key": "titan_clip_13_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_13_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_13_000204_movie_t-3_augB1.jpg", "titan_clip_13_000204_movie_t-2_augB1.jpg", "titan_clip_13_000204_movie_t-1_augB1.jpg", "titan_clip_13_000204_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban commercial street with a single marked lane and no median stretches ahead; the brick-paved surface is clean and dry, and traffic is light with no nearby moving vehicles. Ahead on the left within the ego lane, a tall pedestrian in a blue shirt and black pants pushes a blue garbage bin away from the car, occupying the lane and constraining the ego vehicle's pace. Farther ahead on the right curb, a white box truck is stopped beside orange cones, narrowing the passage along the right edge. Additional pedestrians walk along the sidewalks ahead without entering the roadway.", "hazard_reasoning": "There is a tall, male pedestrian, wearing a blue shirt and black pants, pushing a blue garbage bin, walking on the left side of the road, in the ego lane, away from the ego-car. He occupies the driving lane and could be in the vehicle's path, so the driver should manoeuvre carefully around him."}
{"id": "train_00003", "split": "train", "clip_key": "titan_clip_459_000246_movie", "source": {"subset": "titan", "scenario": "clip_459", "frame": "000246"}, "frames": ["titan_clip_459_000246_movie_t-3.jpg", "titan_clip_459_000246_movie_t-2.jpg", "titan_clip_459_000246_movie_t-1.jpg", "titan_clip_459_000246_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked minivan.", "environment_perception": "An urban, narrow two-way street with no median and smooth pavement shows light traffic as the ego vehicle proceeds in the left lane past closely spaced buildings. A white minivan is parked on the left side of the road near the ego, slightly jutting into the lane and narrowing the passage. From the left beside this minivan, a man walks out and crosses ahead toward the right, entering the ego lane and directly occupying the path. Farther ahead in the same direction, a small dark car travels away along the lane and sets the pace. Cones line the right curb near an entrance.", "hazard_reasoning": "There is a white minivan parked on the left side of the road. The parked minivan encroaches on the driving lane, requiring you to manoeuvre to avoid collision in this narrow street."}
{"id": "train_00004", "split": "train", "clip_key": "titan_clip_681_000474_movie", "source": {"subset": "titan", "scenario": "clip_681", "frame": "000474"}, "frames": ["titan_clip_681_000474_movie_t-3.jpg", "titan_clip_681_000474_movie_t-2.jpg", "titan_clip_681_000474_movie_t-1.jpg", "titan_clip_681_000474_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with a single shared lane and worn but passable asphalt is partly blocked by a construction work zone on the left, so traffic is very light and slow. Several cement mixer trucks and a utility vehicle are parked along the left behind cones and tape for the work, with a worker stepping from a mixer into the roadway and narrowing the passage. Two pedestrians ahead in the center of the lane walk toward the camera, occupying the travel path and constraining the ego vehicle's pace. Another pedestrian on the right edge near storefronts stands partly in the lane while looking at a phone, creating a close lateral encroachment. No oncoming or same-direction vehicles are visible, and the work zone replaces ordinary shoulder space.", "hazard_reasoning": "There is a green cement mixer parked on the left side of the road because of construction work. The construction vehicle obstructs part of the lane, so the driver should slow down to navigate safely."}
{"id": "train_00005", "split": "train", "clip_key": "titan_clip_817_000306_movie", "source": {"subset": "titan", "scenario": "clip_817", "frame": "000306"}, "frames": ["titan_clip_817_000306_movie_t-3.jpg", "titan_clip_817_000306_movie_t-2.jpg", "titan_clip_817_000306_movie_t-1.jpg", "titan_clip_817_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian with trolley.", "environment_perception": "A narrow urban neighborhood street with no center divider and smooth pavement stretches ahead; traffic is light with no moving vehicles nearby. A small car is parked ahead on the right within a recessed garage area, remaining stationary while slightly narrowing the roadside. Farther ahead, another parked vehicle sits along the right edge but does not intrude into the travel lane. On the right at the curb, vending machines and covered bins sit close to the roadway, forming a minor roadside obstacle yet leaving clear passage. A blue straight-ahead sign and a no-parking sign are visible on the left.", "hazard_reasoning": "There is a pedestrian wearing a cap, standing with a trolley on the left side of the road. This pedestrian may step into the lane unexpectedly, so the driver should be aware and prepare to react."}
{"id": "train_00006", "split": "train", "clip_key": "titan_clip_355_000114_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_355_000114_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_355_000114_movie_t-3_augB1.jpg", "titan_clip_355_000114_movie_t-2_augB1.jpg", "titan_clip_355_000114_movie_t-1_augB1.jpg", "titan_clip_355_000114_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for crossing pedestrians", "environment_perception": "A dense urban commercial street with a single narrow lane in the ego direction has smooth pavement and light traffic, with no median. A white box truck is close alongside on the left near the camera, tight to the lane edge and narrowing space as the ego proceeds. Farther ahead in the same lane, a small van moves away slowly and governs the ego vehicle's pace. Ahead to the right, two pedestrians are crossing mid-block in the middle of the road toward the right curb, within the roadway the ego is approaching. Orange cones and bollards line the left curb beside shops and cafs.", "hazard_reasoning": "There are two pedestrians crossing the street in the middle of the road, to the right side. Slow down to yield and avoid collision with them."}
{"id": "train_00007", "split": "train", "clip_key": "2020-0226-101332_000437_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "000437"}, "frames": ["2020-0226-101332_000437_movie_t-3.jpg", "2020-0226-101332_000437_movie_t-2.jpg", "2020-0226-101332_000437_movie_t-1.jpg", "2020-0226-101332_000437_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with multiple same-direction lanes, a center fence median separating oncoming traffic on the right, and a red-marked left curb lane; pavement is smooth and traffic is moderate. A white van immediately ahead in the ego lane is stopped at the intersection, waiting to turn right because oncoming traffic to the right is flowing through and it cannot cross, which blocks our lane. A silver box truck is ahead-left in the curb lane, moving slowly beside the ego vehicle and limiting a leftward pass. On the far right beyond the fence, a line of oncoming cars proceeds straight through the junction, constraining the van's movement.", "hazard_reasoning": "There is a white van stopped in front of the ego-car, in the ego lane, because of oncoming traffic ahead on the right side of the intersection. The driver should stop to maintain a safe distance and avoid a collision with the stationary van."}
{"id": "train_00008", "split": "train", "clip_key": "2020-0212-150403_018754_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "018754"}, "frames": ["2020-0212-150403_018754_movie_t-3.jpg", "2020-0212-150403_018754_movie_t-2.jpg", "2020-0212-150403_018754_movie_t-1.jpg", "2020-0212-150403_018754_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two same-direction lanes and no median stretches ahead; the asphalt is smooth and traffic is light. A black SUV directly ahead in the ego lane is stopped with brake lights illuminated, holding the ego vehicle. Along the left curb, a dark van is stopped while a person stands beside its door on the sidewalk, close to the lane edge but not entering the roadway. In the adjacent right lane, another dark car to the right travels forward past the ego position. Overhead blue directional signs hang above the roadway.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car in the ego lane. The stopped vehicle ahead may require the driver to immediately stop to avoid a rear-end collision."}
{"id": "train_00009", "split": "train", "clip_key": "titan_clip_441_000402_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_441_000402_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_441_000402_movie_t-3_augB1.jpg", "titan_clip_441_000402_movie_t-2_augB1.jpg", "titan_clip_441_000402_movie_t-1_augB1.jpg", "titan_clip_441_000402_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for crossing pedestrians", "environment_perception": "A narrow urban side street with paver blocks and no center line runs between mid-rise buildings; there is no median, the pavement looks sound, and traffic is light with no moving vehicles. Ahead in the ego lane, three pedestrians cross from both the right and left without a marked crosswalk, directly in front of the car and temporarily blocking its path. Farther down the street a few people walk along the sidewalks without entering the roadway. A red prohibition sign stands at the right corner, and parked cars and bicycles line the sides.", "hazard_reasoning": "There are three pedestrians, in the ego lane, crossing the street, in front of the ego car, from the right and left sides of the road, because there's no crosswalk. The pedestrians are crossing without a designated crosswalk directly in front of the vehicle, so stopping is necessary to avoid a collision."}
{"id": "train_00010", "split": "train", "clip_key": "2020-0129-144857_002631_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "002631"}, "frames": ["2020-0129-144857_002631_movie_t-3.jpg", "2020-0129-144857_002631_movie_t-2.jpg", "2020-0129-144857_002631_movie_t-1.jpg", "2020-0129-144857_002631_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road, one lane per direction with no median, shows smooth pavement and moderate flow in both directions. A black minivan ahead in the ego lane slows briefly even though the space in front appears open, reducing the ego car's pace. In the opposite lane, a white SUV approaches steadily and continues past without deviating toward the ego lane. A second oncoming car follows behind it while a distant truck also approaches in its lane. An overhead circular sign shows a 40 speed limit. Pedestrians move along the left sidewalk behind a guardrail, separated from traffic.", "hazard_reasoning": "There is a black minivan slowing in front of the ego car, in the ego lane, because the road ahead is clear. The driver should slow down because a sudden reduction in speed by the black minivan could require quick braking to maintain a safe following distance."}
{"id": "train_00011", "split": "train", "clip_key": "titan_clip_1081_000522_movie", "source": {"subset": "titan", "scenario": "clip_1081", "frame": "000522"}, "frames": ["titan_clip_1081_000522_movie_t-3.jpg", "titan_clip_1081_000522_movie_t-2.jpg", "titan_clip_1081_000522_movie_t-1.jpg", "titan_clip_1081_000522_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down to yield for crossing pedestrian", "environment_perception": "An urban street with a single narrow lane curves right, with no divider and worn pavement; traffic is light. Ahead at the crosswalk, a pedestrian in a white shirt and black pants carrying a duffle bag crosses from left to right across the ego path, walking steadily and controlling the vehicle's pace. Slightly ahead on the right, a small van moves slowly through the curve beside the crosswalk, yielding briefly to the pedestrian and occupying the lane ahead. On the near right, another pedestrian approaches from the sidewalk toward the same crosswalk and may enter the lane after the first passes. A red construction fence lines the right side, narrowing the shoulder.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a duffle bag, and is crossing the street at a crosswalk from the left to the right side. The pedestrian may enter the vehicle's path while crossing, so the driver should slow down to yield for their safety."}
{"id": "train_00012", "split": "train", "clip_key": "titan_clip_863_000108_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_863_000108_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_863_000108_movie_t-3_augB1.jpg", "titan_clip_863_000108_movie_t-2_augB1.jpg", "titan_clip_863_000108_movie_t-1_augB1.jpg", "titan_clip_863_000108_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the parked motorcycle", "environment_perception": "An urban commercial street with a narrow two-way roadway and no median curves gently right; the pavement looks smooth and traffic is light with no close oncoming vehicles. Ahead in the same-direction lane, a small silver van proceeds slowly toward the bend, setting the ego vehicle's pace. Farther ahead near the centerline, a pedestrian steps from the right side and begins crossing leftward, potentially entering the ego lane before the bend. On the left roadside by the shops, there is a black motorcycle parked with its top box open and a person crouching beside it, reducing the clearance along the curb.", "hazard_reasoning": "There is a black motorcycle parked on the left side of the road. The parked motorcycle narrows the available lane space and may obstruct the path, so the driver should manoeuvre carefully around it."}
{"id": "train_00013", "split": "train", "clip_key": "2020-0213-143552_065867_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "065867"}, "frames": ["2020-0213-143552_065867_movie_t-3.jpg", "2020-0213-143552_065867_movie_t-2.jpg", "2020-0213-143552_065867_movie_t-1.jpg", "2020-0213-143552_065867_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with two same-direction lanes on the left of a hedged median has smooth pavement and moderate traffic, with generally steady movement. A white box truck ahead in the ego lane slows, constraining the ego car's pace. A blue hatchback in the left adjacent lane advances and passes the truck. Farther ahead in the left lane, a dark sedan continues straight at a steady speed. Storefronts and roadside signs line the street, and no unusual obstacles are visible.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_00014", "split": "train", "clip_key": "2020-0204-150838_005482_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "005482"}, "frames": ["2020-0204-150838_005482_movie_t-3.jpg", "2020-0204-150838_005482_movie_t-2.jpg", "2020-0204-150838_005482_movie_t-1.jpg", "2020-0204-150838_005482_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road curves left between office buildings, with one lane each way, smooth pavement, and moderate traffic. A traffic signal ahead shows green. Ahead in the ego lane, a black van accelerates away under the green, pulling the line forward. A black sedan slightly closer continues straight at a steady pace, regulating the ego vehicle's speed. Oncoming traffic, including a silver minivan and another car, passes on the right in its lane along the curve without encroaching.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00015", "split": "train", "clip_key": "2020-0226-101332_067338_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "067338"}, "frames": ["2020-0226-101332_067338_movie_t-3.jpg", "2020-0226-101332_067338_movie_t-2.jpg", "2020-0226-101332_067338_movie_t-1.jpg", "2020-0226-101332_067338_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A dense urban corridor with tall buildings surrounds a three-lane same-direction road with painted lane markings and damp asphalt, and traffic is heavy and mostly stopped at the intersection ahead. A gray van directly ahead in the ego lane is stopped because the traffic light ahead is red, holding the ego vehicle. To the left, a red taxi in the adjacent lane edges forward in the queue beside the ego car but stays in its lane. On the right, a white minivan alongside is stopped in its lane, leaving little space for lane changes. The signal above the junction shows red.", "hazard_reasoning": "There is a gray van stopped in the ego lane, in front of the ego car, because of the red traffic lights ahead. The driver should stop to avoid a collision with the halted vehicle and obey the red traffic signal."}
{"id": "train_00016", "split": "train", "clip_key": "2020-0127-132751_103444_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "103444"}, "frames": ["2020-0127-132751_103444_movie_t-3.jpg", "2020-0127-132751_103444_movie_t-2.jpg", "2020-0127-132751_103444_movie_t-1.jpg", "2020-0127-132751_103444_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction and a solid yellow centerline appears, the pavement smooth and traffic light with steady flow. A silver van ahead in the ego lane slows, constraining the ego car's pace. An oncoming motorcycle approaches along the opposing lane near the centerline and continues straight as it draws level with the van. Several pedestrians are visible on the right sidewalk near storefronts, walking or standing by a side street but remaining off the roadway. A black car sits parked in a driveway on the right, adding visual clutter but not moving.", "hazard_reasoning": "There is a silver van slowing in front of the ego car, in the ego lane. Because the van is decelerating ahead in the same lane, the driver must slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_00017", "split": "train", "clip_key": "2020-0207-151349_012593_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "012593"}, "frames": ["2020-0207-151349_012593_movie_t-3.jpg", "2020-0207-151349_012593_movie_t-2.jpg", "2020-0207-151349_012593_movie_t-1.jpg", "2020-0207-151349_012593_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the van at the red light.", "environment_perception": "An urban multilane arterial approaches a major signalized intersection, with the ego car in a single left lane bordered by a fence-lined sidewalk on the left and a concrete barrier on the right; pavement is clean and traffic is moderate, queuing at the junction. A white van directly ahead in the ego lane is stopped at the intersection due to the red light, holding the ego vehicle. Farther ahead in the same lane, a box truck also waits at the signal, creating a short queue that constrains pace. A cyclist rides along the left edge near the railing slightly ahead, continuing straight and remaining close to but outside the ego lane. Overhead traffic lights and lane-direction signs for straight and right movements are clearly visible.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The driver must stop promptly to avoid a collision with the stationary vehicle at the intersection."}
{"id": "train_00018", "split": "train", "clip_key": "titan_clip_1378_000144_movie", "source": {"subset": "titan", "scenario": "clip_1378", "frame": "000144"}, "frames": ["titan_clip_1378_000144_movie_t-3.jpg", "titan_clip_1378_000144_movie_t-2.jpg", "titan_clip_1378_000144_movie_t-1.jpg", "titan_clip_1378_000144_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction and no median has smooth pavement and light traffic. A dark van approaches in the oncoming lane to the right and passes ahead while continuing straight, reducing clearance near the centerline. Two pedestrians, both wearing black shirts, cross mid-block toward the right side farther ahead, briefly occupying the roadway and potentially entering the ego vehicle's path. A white van is parked along the left curb just ahead, encroaching slightly into the ego lane and narrowing the passage. Other pedestrians remain on the sidewalks and do not affect movement.", "hazard_reasoning": "There are two pedestrians, both wearing black shirts, crossing in the middle of the road to the right side. The driver should slow down to avoid a potential collision with crossing pedestrians."}
{"id": "train_00019", "split": "train", "clip_key": "2020-0129-105040_049984_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "049984"}, "frames": ["2020-0129-105040_049984_movie_t-3.jpg", "2020-0129-105040_049984_movie_t-2.jpg", "2020-0129-105040_049984_movie_t-1.jpg", "2020-0129-105040_049984_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road runs under an elevated expressway with buildings and trees on the left; the pavement is dry and smooth, and traffic is light. The ego-vehicle travels in the left lane marked by a yellow centerline, with a low guard-railed divider on its left edge. A small truck ahead near the left curb slows or stands by the roadside, narrowing the usable space in the ego lane. The opposing lane to the right stays clear with no oncoming traffic visible. A pedestrian footbridge spans the roadway ahead, and a yellow warning sign stands on the left. Fenced railway tracks line the far right, and the expressway columns cast shadows without obscuring the path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00020", "split": "train", "clip_key": "2020-0228-150133_011447_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-150133_011447_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-150133_011447_movie_t-3_augB1.jpg", "2020-0228-150133_011447_movie_t-2_augB1.jpg", "2020-0228-150133_011447_movie_t-1_augB1.jpg", "2020-0228-150133_011447_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of truck merging left", "environment_perception": "An urban two-way street with mid-rise buildings and shops comes into view, marked by a solid yellow centerline and dry, smooth pavement, with moderate traffic as the ego approaches a signalized intersection. A white box truck ahead in the ego lane is changing to the left lane, briefly constraining the ego vehicle's pace as it moves over. An oncoming white truck advances in the opposite lane to the right of the centerline and continues straight without encroaching. A small truck on the far side proceeds in its own direction near the curb. Several pedestrians walk or wait along both sidewalks, including one on the right with a dog, but they remain off the roadway. Overhead traffic signals are visible ahead.", "hazard_reasoning": "There is a white truck in front of the ego car changing to the left lane. The truck's lane change could cross the ego-vehicle's path and require a sudden maneuver, so the driver should be aware and prepared."}
{"id": "train_00021", "split": "train", "clip_key": "2020-0210-155354_041367_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "041367"}, "frames": ["2020-0210-155354_041367_movie_t-3.jpg", "2020-0210-155354_041367_movie_t-2.jpg", "2020-0210-155354_041367_movie_t-1.jpg", "2020-0210-155354_041367_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with no physical median and smooth pavement carries light traffic toward a wide signalized intersection. Overhead lights show green, so vehicles move steadily. A silver van ahead in the ego lane proceeds straight under the green and sets the pace for the ego vehicle. A white sedan in the adjacent right lane travels alongside slightly behind, continuing straight without merging. No oncoming traffic influences the scene, and no pedestrians or cyclists are present near the crosswalks.", "hazard_reasoning": "There is a silver van driving in front of the ego car in the ego lane, because of the green traffic light. The driver should maintain proper following distance and continue to follow the vehicle ahead to ensure safe reaction to its movements."}
{"id": "train_00022", "split": "train", "clip_key": "2020-0210-101957_086103_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_086103_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_086103_movie_t-3_augB1.jpg", "2020-0210-101957_086103_movie_t-2_augB1.jpg", "2020-0210-101957_086103_movie_t-1_augB1.jpg", "2020-0210-101957_086103_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each way curves gently right on red asphalt with a solid yellow centerline and small curb islands; pavement looks sound and traffic appears light to moderate. A brown truck directly ahead in the ego lane slows, constraining the ego-car's pace. Two pedestrians on the left sidewalk walk forward near a driveway entrance, staying on the sidewalk as the scene progresses. A cyclist beside them on the left sidewalk rides in the same direction near a curb ramp, remaining off the roadway. A white car approaches in the oncoming lane through the bend and continues past with clear separation. Keep-left bollards on the small island help guide traffic near the side entrance.", "hazard_reasoning": "There is a brown truck slowing in front of the ego-car, in the ego lane. The truck's deceleration creates a collision risk, so the driver should slow down to maintain a safe following distance."}
{"id": "train_00023", "split": "train", "clip_key": "titan_clip_1314_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1314_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1314_000204_movie_t-3_augB1.jpg", "titan_clip_1314_000204_movie_t-2_augB1.jpg", "titan_clip_1314_000204_movie_t-1_augB1.jpg", "titan_clip_1314_000204_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban scene shows the ego-vehicle on a narrow two-way street with no median and smooth pavement, and traffic is light as the road curves slightly left toward an intersection with a zebra crossing. A cyclist wearing a white T-shirt is ahead in the middle of the road, pedaling leftward across the lane toward the far-left side and away from the ego car, briefly occupying the path and constraining the approach. A red triangular stop sign is visible at the far intersection. Storefronts, bollards, and a roadside utility box line the right edge, narrowing the shoulder but leaving the lane clear.", "hazard_reasoning": "There is a cyclist wearing a white t-shirt in the middle of the road, crossing to the left side, away from the ego car. The cyclist may change direction unexpectedly and is in your path, so you should slow down to maintain control and avoid a potential collision."}
{"id": "train_00024", "split": "train", "clip_key": "2020-0206-101736_011361_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "011361"}, "frames": ["2020-0206-101736_011361_movie_t-3.jpg", "2020-0206-101736_011361_movie_t-2.jpg", "2020-0206-101736_011361_movie_t-1.jpg", "2020-0206-101736_011361_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban neighborhood with a narrow two-way street lacking a centerline, curbs on both sides, and smooth pavement; traffic is light as the road curves gently right between apartment buildings. A yellow box truck travels ahead in the ego lane moving away from the ego car and sets the pace through the bend. An oncoming silver van ahead on the right approaches slowly in its lane, reducing space for the truck as they pass each other. Two pedestrians stand on the left sidewalk near a utility pole and remain off the carriageway. Bags and crates sit along the right sidewalk but do not encroach into the lane.", "hazard_reasoning": "There is a yellow truck driving in the ego lane away from the ego car. The truck ahead may obscure obstacles or brake unexpectedly, so be aware of it."}
{"id": "train_00025", "split": "train", "clip_key": "titan_clip_211_000348_movie", "source": {"subset": "titan", "scenario": "clip_211", "frame": "000348"}, "frames": ["titan_clip_211_000348_movie_t-3.jpg", "titan_clip_211_000348_movie_t-2.jpg", "titan_clip_211_000348_movie_t-1.jpg", "titan_clip_211_000348_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately.", "environment_perception": "The scene is an urban side street with a single narrow lane and no median; the dry pavement looks good and traffic is light, with delivery stops constraining flow. A white box truck is stopped ahead in the ego lane near the left curb, partially blocking the path and slowing progress. A pedestrian wearing a white shirt crosses in front of the ego car from left to right, moving from the left sidewalk across the lane near the truck and briefly occupying the ego path. Another person stands on the right sidewalk by a utility pole at the curb, remaining stationary. No traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, crossing the street in front of the ego car, from the left side to the right side. The driver should stop to avoid colliding with the pedestrian crossing ahead."}
{"id": "train_00026", "split": "train", "clip_key": "2020-0225-145150_027838_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "027838"}, "frames": ["2020-0225-145150_027838_movie_t-3.jpg", "2020-0225-145150_027838_movie_t-2.jpg", "2020-0225-145150_027838_movie_t-1.jpg", "2020-0225-145150_027838_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction and one oncoming lane is divided by solid double white lines; the pavement is dry and smooth and traffic is light to moderate with steady flow. Ahead in the ego lane, a small blue truck slows and queues, constraining the ego vehicle because of traffic congestion ahead. Farther ahead in the same lane, a white van continues at a slower pace behind other vehicles, reinforcing the buildup. To the right of the divider, an oncoming white sedan approaches smoothly without interacting. An overhead gantry sign is visible but not active.", "hazard_reasoning": "There is a blue truck slowing in the ego-car lane because of traffic congestion ahead. The driver should slow down to match traffic speed and maintain a safe following distance."}
{"id": "train_00027", "split": "train", "clip_key": "2020-0129-144857_067693_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "067693"}, "frames": ["2020-0129-144857_067693_movie_t-3.jpg", "2020-0129-144857_067693_movie_t-2.jpg", "2020-0129-144857_067693_movie_t-1.jpg", "2020-0129-144857_067693_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with three same-direction lanes runs on dry asphalt, divided from oncoming traffic by a metal guardrail median; traffic is heavy and slow. A white sedan directly ahead in the ego lane slows because of the dense queue ahead, constraining the ego car's pace. A small flatbed truck in the lane to the left creeps forward beside the ego lane, limiting room to pass. Several vans farther left also inch along near the curb, contributing to the backup. Oncoming vehicles beyond the barrier proceed separately with no effect on the ego path.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and prevent a rear-end collision due to the sudden slowdown."}
{"id": "train_00028", "split": "train", "clip_key": "titan_clip_166_000132_movie", "source": {"subset": "titan", "scenario": "clip_166", "frame": "000132"}, "frames": ["titan_clip_166_000132_movie_t-3.jpg", "titan_clip_166_000132_movie_t-2.jpg", "titan_clip_166_000132_movie_t-1.jpg", "titan_clip_166_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian", "environment_perception": "An urban alley-like street with tall buildings lines a single narrow two-way roadway without a centerline; the pavement is smooth and traffic is light with no moving vehicles visible. Ahead on the left, a pedestrian wearing a white shirt walks away along the road edge, close to the ego path. On the near right, another pedestrian with an umbrella moves along the curbside, remaining at the edge. A large 20 marking on the pavement indicates a low speed zone. A white scooter and a handcart sit parked on the left shoulder, while orange cones and shop fixtures tighten the right margin and slightly narrow the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the left side of the road, away from the ego car. This pedestrian may step into the travel lane unexpectedly, so the driver should be aware of the pedestrian."}
{"id": "train_00029", "split": "train", "clip_key": "2020-0218-103119_047203_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "047203"}, "frames": ["2020-0218-103119_047203_movie_t-3.jpg", "2020-0218-103119_047203_movie_t-2.jpg", "2020-0218-103119_047203_movie_t-1.jpg", "2020-0218-103119_047203_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two same-direction lanes on the left is shown; the pavement is dry and smooth with double center lines, and traffic is heavy with a queue near an intersection ahead. Directly ahead in the ego lane, a white box truck is stopped in congestion, blocking the ego car's path. To the left, a red sedan runs alongside at low speed in the adjacent lane, inching forward past the stopped truck and continuing through the queue. Across the center lines to the right, a white van in the oncoming lane approaches slowly through the intersection, remaining separate from the ego path.", "hazard_reasoning": "A white truck is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid colliding with the halted truck that is obscuring the road ahead and preventing visibility of oncoming traffic."}
{"id": "train_00030", "split": "train", "clip_key": "titan_clip_1037_000540_movie", "source": {"subset": "titan", "scenario": "clip_1037", "frame": "000540"}, "frames": ["titan_clip_1037_000540_movie_t-3.jpg", "titan_clip_1037_000540_movie_t-2.jpg", "titan_clip_1037_000540_movie_t-1.jpg", "titan_clip_1037_000540_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be cautious of cyclist ahead", "environment_perception": "An urban two-way street with a single narrow lane in each direction and no median unfolds ahead; the pavement is smooth and traffic is light. The ego vehicle proceeds in the left lane past storefronts and bollards. Ahead in the middle of the road, a cyclist in a blue shirt and black pants rides away from the ego car, taking the center of the lane to bypass a parked white van and constraining the ego vehicle's pace. On the right, two pedestrians step off the sidewalk and start crossing toward the left, potentially entering the ego lane ahead. Farther ahead, a small car and a scooter continue away in the same direction. A large white van is stopped along the left curb, narrowing the lane.", "hazard_reasoning": "There is a cyclist wearing a blue shirt and black pants, and cycling away from the ego car, in the middle of the road, because of the parked vehicle. The driver should be cautious of the cyclist occupying the lane to avoid a potential collision."}
{"id": "train_00031", "split": "train", "clip_key": "2020-0204-150838_072115_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "072115"}, "frames": ["2020-0204-150838_072115_movie_t-3.jpg", "2020-0204-150838_072115_movie_t-2.jpg", "2020-0204-150838_072115_movie_t-1.jpg", "2020-0204-150838_072115_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway with three same-direction lanes runs beside and under an elevated structure, bounded by a concrete barrier on the right; the pavement is smooth and traffic is heavy and slow-moving. A red container truck directly ahead in the ego lane slows, constraining the ego car's pace. In the adjacent two lanes to the left, a silver box truck and several cars travel slightly ahead at similar low speed, staying in their lanes alongside the ego vehicle. Farther ahead in the middle lane, another large truck proceeds slowly in the same flow.", "hazard_reasoning": "There is a red truck slowing in the ego lane, in front of the ego car. The slowing truck ahead may reduce speed suddenly, so the driver should slow down to maintain a safe following distance."}
{"id": "train_00032", "split": "train", "clip_key": "titan_clip_266_000786_movie", "source": {"subset": "titan", "scenario": "clip_266", "frame": "000786"}, "frames": ["titan_clip_266_000786_movie_t-3.jpg", "titan_clip_266_000786_movie_t-2.jpg", "titan_clip_266_000786_movie_t-1.jpg", "titan_clip_266_000786_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single undivided lane and smooth pavement appears quiet with light traffic. A pedestrian in the middle of the road ahead, carrying a backpack and wearing black pants, is crossing rightward toward the curb, directly in the ego vehicle's path. A silver van is stopped on the right edge, protruding slightly into the roadway and narrowing the available space near where the pedestrian is heading. A few traffic cones line the left sidewalk, and no other moving vehicles are nearby.", "hazard_reasoning": "There is a pedestrian in the middle of the road, carrying a backpack and wearing black pants, crossing to the right hand side of the road. The pedestrian is crossing ahead, requiring the driver to reduce speed to ensure safety."}
{"id": "train_00033", "split": "train", "clip_key": "titan_clip_961_000402_movie", "source": {"subset": "titan", "scenario": "clip_961", "frame": "000402"}, "frames": ["titan_clip_961_000402_movie_t-3.jpg", "titan_clip_961_000402_movie_t-2.jpg", "titan_clip_961_000402_movie_t-1.jpg", "titan_clip_961_000402_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban single-lane street with brick paving and no median runs between tall buildings, and traffic is light and slow. A white box truck ahead in the ego lane moves slowly near midblock and controls the ego vehicle's pace. On the left edge near the ego car, a pedestrian wearing white shoes and carrying a handbag walks away along the curb, staying out of the lane. Far ahead near the truck, another pedestrian crosses from right to left toward the left sidewalk and may enter the ego path. On the right, a parked white bicycle and small cones intrude slightly into the lane.", "hazard_reasoning": "There is a pedestrian wearing white shoes, carrying a handbag, walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre to maintain safe distance and avoid the pedestrian."}
{"id": "train_00034", "split": "train", "clip_key": "titan_clip_1304_000066_movie", "source": {"subset": "titan", "scenario": "clip_1304", "frame": "000066"}, "frames": ["titan_clip_1304_000066_movie_t-3.jpg", "titan_clip_1304_000066_movie_t-2.jpg", "titan_clip_1304_000066_movie_t-1.jpg", "titan_clip_1304_000066_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping district with a narrow shared roadway and cobbled pavement appears well maintained, with light vehicle movement but heavy pedestrian flow through a small intersection. Ahead in the center of the lane, a pedestrian pushing a suitcase walks away from the ego vehicle along the middle of the road, occupying the path and likely constraining pace. To the left-front, a man and child with rolling luggage cross from left toward the center, potentially entering the ego lane. At the right edge near bollards, a woman stands close to the curb facing the street and may step into the path. The lane bends slightly right between storefronts, and no traffic signals are visible.", "hazard_reasoning": "There is a pedestrian pushing a suitcase and walking in the middle of the road, away from the ego car. The driver should slow down to avoid colliding with the pedestrian who may change direction unexpectedly."}
{"id": "train_00035", "split": "train", "clip_key": "2020-0127-132751_103061_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "103061"}, "frames": ["2020-0127-132751_103061_movie_t-3.jpg", "2020-0127-132751_103061_movie_t-2.jpg", "2020-0127-132751_103061_movie_t-1.jpg", "2020-0127-132751_103061_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A suburban two-lane road with a solid yellow centerline and smooth pavement shows light traffic, and the oncoming lane remains clear. Ahead in the ego lane, a silver van gradually slows, constraining the ego vehicle's pace. On the right sidewalk near the curb, a pedestrian walks along the roadway but stays on the sidewalk. Farther ahead on the same side, another person stands near a driveway, away from the lane. A few parked cars sit on the left shoulder by a low wall without intruding into the travel lane.", "hazard_reasoning": "There is a silver van slowing in the ego lane. You should slow down to maintain a safe following distance and avoid a rear-end collision under this situation."}
{"id": "train_00036", "split": "train", "clip_key": "titan_clip_77_000390_movie", "source": {"subset": "titan", "scenario": "clip_77", "frame": "000390"}, "frames": ["titan_clip_77_000390_movie_t-3.jpg", "titan_clip_77_000390_movie_t-2.jpg", "titan_clip_77_000390_movie_t-1.jpg", "titan_clip_77_000390_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped van", "environment_perception": "An urban narrow two-way street with no median or center line has smooth pavement and light traffic as the car proceeds along a straight block. A three-wheeled delivery scooter travels ahead in the ego lane at low speed, constraining the ego vehicle's pace. Farther ahead on the right side of the ego lane, a white van is stopped while being unloaded, partially blocking the path and leaving a narrow gap for passing. Bicycles are parked along the right curb at shop fronts, narrowing the shoulder.", "hazard_reasoning": "There is a white van stopped in the ego lane, on the right side of the road, because it is being unloaded. The van blocks the driving lane, so the driver should carefully manoeuvre around it to avoid a collision."}
{"id": "train_00037", "split": "train", "clip_key": "titan_clip_1167_000588_movie", "source": {"subset": "titan", "scenario": "clip_1167", "frame": "000588"}, "frames": ["titan_clip_1167_000588_movie_t-3.jpg", "titan_clip_1167_000588_movie_t-2.jpg", "titan_clip_1167_000588_movie_t-1.jpg", "titan_clip_1167_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping alley serves as a narrow shared one-lane street with brick pavement in good condition; vehicle flow is minimal and progress is slow among many pedestrians. A pedestrian wearing a white dress is ahead on the right, walking away along the curb and potentially edging into the path. On the right foreground another pedestrian walks toward the ego close to the storefronts, reducing available space. On the left margin a pedestrian approaches toward the ego near the awnings, further narrowing the passage. A black van is stopped on the left with its rear door open and a white van stands ahead near the center, leaving a tight corridor that constrains the ego vehicle's pace.", "hazard_reasoning": "There is a pedestrian wearing a white dress, walking on the right side of the road, away from the ego car. The pedestrian could unexpectedly step onto the roadway, so the driver should slow down to maintain a safe distance and be prepared to stop."}
{"id": "train_00038", "split": "train", "clip_key": "2020-0228-102841_083162_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "083162"}, "frames": ["2020-0228-102841_083162_movie_t-3.jpg", "2020-0228-102841_083162_movie_t-2.jpg", "2020-0228-102841_083162_movie_t-1.jpg", "2020-0228-102841_083162_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three lanes in the ego direction and a railing median separating oncoming traffic has smooth asphalt and moderate, steadily moving flow. Ahead in the ego lane a yellow box truck drives away through the intersection, setting the pace. In the adjacent right lane a red car slightly ahead accelerates forward, remaining in its lane and not impeding the ego path. To the left near the crosswalk a white coupe creeps ahead in its lane alongside the ego vehicle. A circular 50 km/h speed limit sign is posted on the right roadside.", "hazard_reasoning": "There is a yellow truck driving in the ego lane away from the ego car. The yellow truck ahead may merge into your lane or slow down unexpectedly, so you should be aware of its movements."}
{"id": "train_00039", "split": "train", "clip_key": "2020-0129-144857_029709_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "029709"}, "frames": ["2020-0129-144857_029709_movie_t-3.jpg", "2020-0129-144857_029709_movie_t-2.jpg", "2020-0129-144857_029709_movie_t-1.jpg", "2020-0129-144857_029709_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-ending the stopped minivan.", "environment_perception": "An urban arterial under an elevated expressway has two same-direction lanes with a bollard-lined gore on the right, sound but slightly damp pavement, and traffic queued at a red light. A black minivan directly ahead in the ego lane stands still because the signal is red, holding the ego car. In the adjacent left lane a white box truck is also stopped slightly forward of the minivan, constraining any lane change. On the right, a cyclist rides forward along the separated path behind a guardrail, parallel to traffic and not entering the roadway. The overhead traffic signal shows red for this approach.", "hazard_reasoning": "There is a black minivan stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. Stop to avoid rear-ending the minivan, which is halted by the red light."}
{"id": "train_00040", "split": "train", "clip_key": "2020-0214-102601_010605_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "010605"}, "frames": ["2020-0214-102601_010605_movie_t-3.jpg", "2020-0214-102601_010605_movie_t-2.jpg", "2020-0214-102601_010605_movie_t-1.jpg", "2020-0214-102601_010605_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down and keep a safe distance.", "environment_perception": "An urban arterial with two-way traffic runs between mid-rise buildings, with good pavement and painted chevron markings beside the left lane; traffic is moderate and occasionally bunches. A blue hatchback ahead in the ego lane slows because of congestion ahead, constraining the ego car's pace. On the right side of the roadway, oncoming traffic including a white van approaches steadily without deviating toward the ego lane. Pedestrians wait at a bus stop along the left sidewalk behind guardrails and remain clear of the roadway. An overhead blue directional sign lists destinations and arrows for the upcoming junction.", "hazard_reasoning": "There is a blue hatchback slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down and maintain a safe following distance in the congested traffic."}
{"id": "train_00041", "split": "train", "clip_key": "2020-0205-103411_121219_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "121219"}, "frames": ["2020-0205-103411_121219_movie_t-3.jpg", "2020-0205-103411_121219_movie_t-2.jpg", "2020-0205-103411_121219_movie_t-1.jpg", "2020-0205-103411_121219_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction and no physical median runs between mid-rise buildings; the pavement is dry and smooth, and traffic is light as the road approaches an elevated structure ahead. A white sedan just ahead in the ego lane proceeds straight at a steady pace, effectively setting the ego vehicle's speed. Farther ahead in the same lane, a white van drives away from the ego car, gradually increasing the gap. Parked trucks and cars line the right curb within a hatched taper, narrowing the roadway but remaining outside the travel lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00042", "split": "train", "clip_key": "titan_clip_205_000750_movie", "source": {"subset": "titan", "scenario": "clip_205", "frame": "000750"}, "frames": ["titan_clip_205_000750_movie_t-3.jpg", "titan_clip_205_000750_movie_t-2.jpg", "titan_clip_205_000750_movie_t-1.jpg", "titan_clip_205_000750_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shopping street with a single narrow shared lane and block-paved surface, no divider or lane markings, carries light vehicle traffic but heavy pedestrian activity. A white van ahead in the ego lane proceeds slowly near the center, setting the ego vehicle's pace. Ahead in the middle of the roadway, a pedestrian wearing black pants and a gray shirt walks away from the car on a street without a clear sidewalk, remaining in the vehicle path. On the right edge, several pedestrians move along storefronts and at times drift toward the lane, so they may enter the ego path. No traffic signals or other controls are evident in this segment.", "hazard_reasoning": "There is a pedestrian wearing black pants and a gray shirt, walking in the middle of the road, away from the ego car, because there is no sidewalk. The driver should carefully manoeuvre to avoid collision with the pedestrian in the roadway."}
{"id": "train_00043", "split": "train", "clip_key": "titan_clip_1299_000288_movie", "source": {"subset": "titan", "scenario": "clip_1299", "frame": "000288"}, "frames": ["titan_clip_1299_000288_movie_t-3.jpg", "titan_clip_1299_000288_movie_t-2.jpg", "titan_clip_1299_000288_movie_t-1.jpg", "titan_clip_1299_000288_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow unmarked carriageway slopes gently upward and bends right; the asphalt appears worn and patched, and traffic is light with no oncoming vehicles visible. Ahead on the left curb a yellow taxi is stopped with a door open as a passenger exits, occupying part of the travel lane and slowing the approach. A dark sedan in the same direction runs just ahead near the taxi and reduces speed, queuing behind it and constraining the ego car's pace. A pedestrian stands near cones by a construction frontage on the left, close to the curb but remaining on the sidewalk. Another person on the right walks along the storefront hedge. Temporary fencing, cones, and several curbside vehicles further narrow the roadway near the taxi.", "hazard_reasoning": "There is a yellow taxi with one door open, stopped on the left side of the road, in front of the ego-car, because someone is exiting it. This stopped taxi with its open door in front of the ego-vehicle creates a collision risk, so the driver should slow down to safely navigate past it."}
{"id": "train_00044", "split": "train", "clip_key": "titan_clip_1158_000486_movie", "source": {"subset": "titan", "scenario": "clip_1158", "frame": "000486"}, "frames": ["titan_clip_1158_000486_movie_t-3.jpg", "titan_clip_1158_000486_movie_t-2.jpg", "titan_clip_1158_000486_movie_t-1.jpg", "titan_clip_1158_000486_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "A narrow urban alley with a two-way roadway lacks a centerline, bordered closely by buildings, and the asphalt appears smooth; traffic is light with no moving vehicles. On the left near the curb, a man wearing an orange shirt and black pants opens the trunk of a parked white van, standing at its rear close to the travel lane and occupying part of the limited width. The van is stopped along the left edge just before the crosswalk, reducing clearance for passing. Ahead, a zebra crossing is visible with a blue pedestrian crossing sign posted beside it.", "hazard_reasoning": "There is a man wearing an orange shirt and black pants, and opening the trunk of a parked car, on the left side of the road. This poses a hazard because the pedestrian may step into the roadway and the obstructing van leaves limited room for negotiation, requiring careful maneuvering."}
{"id": "train_00045", "split": "train", "clip_key": "2020-0227-104226_106051_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "106051"}, "frames": ["2020-0227-104226_106051_movie_t-3.jpg", "2020-0227-104226_106051_movie_t-2.jpg", "2020-0227-104226_106051_movie_t-1.jpg", "2020-0227-104226_106051_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes and dry, well-marked pavement carries moderate, smoothly flowing traffic. A white box truck ahead in the ego lane continues straight and gradually pulls away from the ego vehicle as the signal ahead shows green. A small dark hatchback ahead on the left cruises in the curb lane at a similar speed and stays clear of the ego lane. In the adjacent right lanes, a white car followed by a dark minivan proceed straight and pace the flow, limiting an immediate move to the right.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because the traffic light is green. The green signal may change soon, so the driver should maintain safe spacing and follow the truck to adjust to any upcoming signal change."}
{"id": "train_00046", "split": "train", "clip_key": "2020-0212-150403_010224_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "010224"}, "frames": ["2020-0212-150403_010224_movie_t-3.jpg", "2020-0212-150403_010224_movie_t-2.jpg", "2020-0212-150403_010224_movie_t-1.jpg", "2020-0212-150403_010224_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth pavement runs between tall buildings, with a solid line and a low fenced median on the right; traffic is heavy and briefly stopped. A black SUV is directly ahead in the ego lane, stationary with brake lights on, blocking the lane as described. To the left, a black van in the adjacent lane edges forward alongside the ego car, slowly passing the stopped vehicle. Farther ahead in the left lane, a box truck waits near the buildings, contributing to the queue.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, in front of the ego car. The stopped SUV ahead poses a risk of rear-end collision if the driver does not stop promptly."}
{"id": "train_00047", "split": "train", "clip_key": "titan_clip_968_000186_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_968_000186_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_968_000186_movie_t-3_augB1.jpg", "titan_clip_968_000186_movie_t-2_augB1.jpg", "titan_clip_968_000186_movie_t-1_augB1.jpg", "titan_clip_968_000186_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban residential two-way road with a single narrow lane in each direction and no median is shown; the pavement is dry and smooth, and traffic is light. On the right ahead, two pedestrians engaged in construction are present: one in a white shirt stands by the curb while another in a blue shirt pushes a trolley toward the middle of the lane, which may enter the ego path. A line of parked work trucks with safety cones occupies the right edge, encroaching into the roadway and further narrowing the clearance. No moving vehicles are visible ahead or as oncoming traffic.", "hazard_reasoning": "There are two pedestrians on the right side of the road, wearing a white shirt and a blue shirt, one standing and one pushing a trolley toward the middle of the lane, because they are performing construction work. The pedestrians could unexpectedly enter the vehicle's path due to construction activity, increasing collision risk, so the driver should slow down to anticipate their movement."}
{"id": "train_00048", "split": "train", "clip_key": "titan_clip_141_000510_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_141_000510_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_141_000510_movie_t-3_augB1.jpg", "titan_clip_141_000510_movie_t-2_augB1.jpg", "titan_clip_141_000510_movie_t-1_augB1.jpg", "titan_clip_141_000510_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street has one lane in each direction with no median, smooth pavement, and light vehicle flow amid heavy foot traffic as the ego travels on the left. Two pedestrians, one wearing a white shirt and the other a black shirt, cross midblock from left to right ahead, passing through the ego lane. A white box truck ahead in the same lane slows near the intersection, constraining the ego vehicle's pace. A black SUV at the left curb near the camera waits angled toward the lane and may merge after the pedestrians clear. A blue straight-ahead regulatory sign is posted on the left.", "hazard_reasoning": "There are two pedestrians wearing a white and a black shirt, crossing the street in the middle of the road, from the left side to the right side. The driver should slow down to avoid a potential collision with these pedestrians and ensure their safe crossing."}
{"id": "train_00049", "split": "train", "clip_key": "titan_clip_1022_000492_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1022_000492_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1022_000492_movie_t-3_augB1.jpg", "titan_clip_1022_000492_movie_t-2_augB1.jpg", "titan_clip_1022_000492_movie_t-1_augB1.jpg", "titan_clip_1022_000492_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "A quiet urban residential street forms a very narrow two-way roadway with no median or centerline; the fresh asphalt is smooth and traffic is light. Ahead on the right, an oncoming cyclist wearing a black shirt rides toward the ego vehicle along the opposing side, edging toward the middle and limiting clearance for the ego path. No same-direction vehicles are present. Parked scooters and bicycles line the right curb in marked bays, and several cars sit in small off-street spaces, narrowing the corridor while remaining outside the lane. No traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a cyclist wearing a black shirt and cycling on the right side of the road, toward the ego car. The cyclist is moving into the ego vehicle's path, so the driver should manoeuvre carefully around them to maintain safety."}
{"id": "train_00050", "split": "train", "clip_key": "2020-0131-135401_031139_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "031139"}, "frames": ["2020-0131-135401_031139_movie_t-3.jpg", "2020-0131-135401_031139_movie_t-2.jpg", "2020-0131-135401_031139_movie_t-1.jpg", "2020-0131-135401_031139_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked hatchback.", "environment_perception": "An urban two-way street with one lane each direction and no median runs between mid-rise buildings; the pavement is smooth and traffic is moderate, with vehicles keeping left and oncoming cars passing on the right. Two scooters at the right curb just ahead, including a white three-wheeler, begin to pull out and move forward, potentially merging into the ego lane. A hatchback is parked on the left in front of the ego car, reducing the available lane width. A white car farther ahead in the ego lane proceeds at a steady pace, loosely setting the flow. A fenced construction site lines the right side.", "hazard_reasoning": "There is a black hatchback parked on the left side of road in front of ego-car. The parked hatchback reduces available road space and may require the driver to alter their path to avoid collision, so the driver should manoeuvre carefully around it."}
{"id": "train_00051", "split": "train", "clip_key": "2020-0227-104226_029483_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "029483"}, "frames": ["2020-0227-104226_029483_movie_t-3.jpg", "2020-0227-104226_029483_movie_t-2.jpg", "2020-0227-104226_029483_movie_t-1.jpg", "2020-0227-104226_029483_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one narrow lane per direction runs between buildings and a riverside fence, divided by a solid yellow centerline on smooth pavement, with moderate traffic. A white box truck travels ahead in the ego lane moving away at a steady pace, effectively setting the ego vehicle's speed. An oncoming black SUV approaches in the opposing lane and passes close to the centerline without deviating. Farther ahead in the opposing lane, a tarp-covered medium truck followed by a small white van proceeds toward the camera in a short queue, keeping the opposite lane occupied but within their lane. A roadside sign on the left posts a 40 speed limit. Guardrails line the left sidewalk and no obstacles appear in the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The covered fence partially obscures its position, creating a blind spot that could hide sudden speed or direction changes, so maintain awareness of this vehicle."}
{"id": "train_00052", "split": "train", "clip_key": "titan_clip_305_000096_movie", "source": {"subset": "titan", "scenario": "clip_305", "frame": "000096"}, "frames": ["titan_clip_305_000096_movie_t-3.jpg", "titan_clip_305_000096_movie_t-2.jpg", "titan_clip_305_000096_movie_t-1.jpg", "titan_clip_305_000096_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian in roadway.", "environment_perception": "A narrow urban shopping street with a single shared lane has no centerline or median; the brick-paved surface is dry and vehicle traffic is light. Storefronts and parked bicycles line both sides as the ego vehicle continues straight at low speed. Ahead in the lane center, a pedestrian in a white dress carrying a backpack walks away from the ego vehicle because of a van stopped on the right, remaining directly in the ego path. A small white van is parked at the right curb with its rear open, protruding slightly into the roadway and constricting the lane. Farther ahead, a cyclist travels away near the middle but maintains a steady gap. Construction hoarding on the right narrows the edge of the street.", "hazard_reasoning": "There is a pedestrian wearing a white dress, carrying a backpack, walking in the middle of the road away from the ego car, because of the parked vehicle on the right. The pedestrian is in the vehicle's path and may not be visible until close, so the driver should slow down to avoid a collision."}
{"id": "train_00053", "split": "train", "clip_key": "2020-0131-135401_045454_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "045454"}, "frames": ["2020-0131-135401_045454_movie_t-3.jpg", "2020-0131-135401_045454_movie_t-2.jpg", "2020-0131-135401_045454_movie_t-1.jpg", "2020-0131-135401_045454_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban two-way road with metal railings flanks both sides, the pavement appears smooth, and traffic is light as vehicles approach a signalized intersection with a solid yellow centerline. Ahead in the ego lane, a white hatchback starts to move off and accelerates through the junction under a green light, setting the pace for the ego vehicle. On the right corner, a pedestrian waits on the sidewalk by the intersection and remains clear of the roadway. In the opposite lane, oncoming cars continue past beyond the junction without deviating toward the ego path.", "hazard_reasoning": "There is a white hatchback starting to move in the ego lane, in front of the ego car, because of a green traffic light. The driver should start moving to match the traffic flow and maintain a safe following distance as the vehicle ahead accelerates."}
{"id": "train_00054", "split": "train", "clip_key": "2020-0225-145150_022897_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "022897"}, "frames": ["2020-0225-145150_022897_movie_t-3.jpg", "2020-0225-145150_022897_movie_t-2.jpg", "2020-0225-145150_022897_movie_t-1.jpg", "2020-0225-145150_022897_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs between concrete barriers and a solid orange centerline; the pavement is dry and smooth and traffic appears moderate with steady flow. A silver van ahead in the ego lane drives away from the ego car at a consistent speed, effectively leading the lane. On the far side of the median to the right, oncoming cars move through the opposite carriageway without interacting with the ego path. The adjacent right lane in the same direction is mostly clear, and double white lines restrict lane changes near the curve. Prohibitory roadside signs on the left indicate turn restrictions.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car. Since there is a stop sign ahead and the van may stop unexpectedly, you should follow the vehicle ahead to maintain a safe distance and comply with traffic control."}
{"id": "train_00055", "split": "train", "clip_key": "titan_clip_279_000186_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_279_000186_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_279_000186_movie_t-3_augB1.jpg", "titan_clip_279_000186_movie_t-2_augB1.jpg", "titan_clip_279_000186_movie_t-1_augB1.jpg", "titan_clip_279_000186_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban side-street intersection opens onto a narrow two-way road, with orange cones forming a temporary center divider and smooth pavement, the oncoming side to the right; traffic is light with no moving vehicles. Ahead in the middle of the road, a pedestrian wearing a gray vest and cap walks away while signaling with an outstretched arm to control traffic, keeping the ego vehicle waiting. At the near crossing, a man from the left strides across to the right directly in front of the car, occupying the ego lane. Slightly farther ahead near the right edge, a woman in a light dress moves diagonally left across the lane under the marshal's direction. The coned channel narrows the available path.", "hazard_reasoning": "There is a pedestrian wearing a gray vest and a cap, walking in the middle of the road, away from the ego car, because they are controlling traffic. The pedestrian controlling traffic may signal you to stop and is in the roadway, so you should halt to avoid a collision."}
{"id": "train_00056", "split": "train", "clip_key": "2020-0127-132751_081438_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "081438"}, "frames": ["2020-0127-132751_081438_movie_t-3.jpg", "2020-0127-132751_081438_movie_t-2.jpg", "2020-0127-132751_081438_movie_t-1.jpg", "2020-0127-132751_081438_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial in a dense city setting stretches toward a signalized intersection, with three lanes in the ego direction, no physical median, smooth pavement, and moderate traffic. A green tarp?overed truck ahead in the ego lane moves away toward the junction, opening the gap to the camera car. To the right, a white flatbed truck travels in the adjacent right-turn lane slightly ahead, continuing toward the intersection without entering the ego lane. In the left-adjacent lane, a dark sedan advances parallel to the ego vehicle and the truck, maintaining lane position. Overhead traffic lights are visible at the crossroads, and a blue-painted curbside lane runs along the left.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00057", "split": "train", "clip_key": "2020-0210-101957_060255_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "060255"}, "frames": ["2020-0210-101957_060255_movie_t-3.jpg", "2020-0210-101957_060255_movie_t-2.jpg", "2020-0210-101957_060255_movie_t-1.jpg", "2020-0210-101957_060255_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single lane in each direction, no median, and smooth pavement; traffic is light and the flow in the ego lane is slow. A large green truck is directly ahead in the ego lane, slowing and constraining the ego vehicle's pace. No other moving vehicles are close, and no oncoming traffic is visible nearby. A barrier wall lines the right side and residential buildings with a sidewalk are on the left, with a chevron-marked shoulder tapering beside the truck.", "hazard_reasoning": "There is a green truck slowing in front of the ego car, in the ego lane. Slow down to maintain a safe following distance and avoid collision."}
{"id": "train_00058", "split": "train", "clip_key": "2020-0131-135401_050869_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "050869"}, "frames": ["2020-0131-135401_050869_movie_t-3.jpg", "2020-0131-135401_050869_movie_t-2.jpg", "2020-0131-135401_050869_movie_t-1.jpg", "2020-0131-135401_050869_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with smooth asphalt and painted lane dividers carries moderate traffic that bunches near an upcoming junction. A black motorcycle ahead in the ego lane slows because of congestion ahead, constraining the ego vehicle's pace. Just beyond it, a white hatchback in the same lane also eases off as the queue builds. In the adjacent right lane, a silver van travels forward slightly faster, remaining parallel without merging into the ego path. An overhead blue direction sign points toward Minowa and Ueno. Buildings line both sides and pedestrians stay on the sidewalks.", "hazard_reasoning": "There is a black motorcycle slowing down in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and prevent a collision."}
{"id": "train_00059", "split": "train", "clip_key": "2020-0207-151349_024728_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "024728"}, "frames": ["2020-0207-151349_024728_movie_t-3.jpg", "2020-0207-151349_024728_movie_t-2.jpg", "2020-0207-151349_024728_movie_t-1.jpg", "2020-0207-151349_024728_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes runs between tall buildings; the pavement is smooth and traffic becomes dense ahead. A narrow median with railing on the right separates oncoming traffic. A white box truck is directly ahead in the ego left lane and slows into a forming queue, constraining the ego car's pace because of congestion ahead. A small white van is slightly ahead in the adjacent right lane and maintains a steadier speed, overtaking the slower ego lane. Distant vehicles fill both lanes, reinforcing the bottleneck.", "hazard_reasoning": "There's a white truck, slowing down in front of the ego car, in the ego lane because of traffic congestion ahead. The truck's deceleration indicates congested traffic, so the driver should reduce speed to maintain a safe following distance under this situation."}
{"id": "train_00060", "split": "train", "clip_key": "titan_clip_806_000498_movie", "source": {"subset": "titan", "scenario": "clip_806", "frame": "000498"}, "frames": ["titan_clip_806_000498_movie_t-3.jpg", "titan_clip_806_000498_movie_t-2.jpg", "titan_clip_806_000498_movie_t-1.jpg", "titan_clip_806_000498_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban two-way street between tall buildings has no median and slightly worn pavement, with moderate traffic moving through. Ahead in the ego lane along the left curb, a red delivery truck is stopped, occupying much of the lane and slowing the approach. A pedestrian just ahead crosses rightward in front of the truck and across the ego lane, momentarily blocking the path. On the right side an oncoming gray car approaches while a scooter follows behind it, narrowing the gap for overtaking the stopped truck.", "hazard_reasoning": "There is a red truck stopped on the left side of the road, in the ego lane. The stopped truck blocks your path in the ego lane, so you should carefully manoeuvre around it to avoid a collision."}
{"id": "train_00061", "split": "train", "clip_key": "titan_clip_97_000564_movie", "source": {"subset": "titan", "scenario": "clip_97", "frame": "000564"}, "frames": ["titan_clip_97_000564_movie_t-3.jpg", "titan_clip_97_000564_movie_t-2.jpg", "titan_clip_97_000564_movie_t-1.jpg", "titan_clip_97_000564_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with two-way traffic and no median appears narrow but smoothly paved, and traffic flow is light. Ahead in the ego lane, a man on a bicycle rides near the center-left, moving straight and occupying the ego path because a black sedan is parked along the left curb with orange cones. An oncoming black SUV passes close along the right side of the roadway, continuing straight past the ego vehicle. Parked vehicles line both curbs, including a white van standing on the right ahead, which narrows the available space.", "hazard_reasoning": "There is a man cycling on a bicycle, on the left side of the ego lane, because there is a black sedan parked on the left of the ego lane. The cyclist is riding within the ego lane and may require more space; slowing down reduces the risk of collision with the cyclist."}
{"id": "train_00062", "split": "train", "clip_key": "2020-0205-103411_082918_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "082918"}, "frames": ["2020-0205-103411_082918_movie_t-3.jpg", "2020-0205-103411_082918_movie_t-2.jpg", "2020-0205-103411_082918_movie_t-1.jpg", "2020-0205-103411_082918_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop before the white SUV to avoid collision", "environment_perception": "An urban arterial with two same-direction lanes approaches a signalized intersection; the asphalt is smooth and traffic is moderate, bunching into a short queue. A white minivan directly ahead in the ego lane is stationary for the red light at the intersection, holding the ego vehicle. In the adjacent left lane, a white box van slightly ahead is also stopped as part of the queue. A pedestrian steps from the right sidewalk and walks across the crosswalk, remaining clear of the ego lane while vehicles wait. The overhead traffic signal facing our approach shows red.", "hazard_reasoning": "There is a white SUV stopped in the ego lane because of the red traffic light ahead at the intersection. The driver should stop to avoid colliding with the halted white SUV and comply with the red light."}
{"id": "train_00063", "split": "train", "clip_key": "2020-0225-102455_052048_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "052048"}, "frames": ["2020-0225-102455_052048_movie_t-3.jpg", "2020-0225-102455_052048_movie_t-2.jpg", "2020-0225-102455_052048_movie_t-1.jpg", "2020-0225-102455_052048_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs alongside a grassy median with railings; the pavement looks smooth and traffic is light to moderate as the road gently bends left. A gray van ahead in the ego lane pulls away because the lane ahead is clear, increasing the gap. A motorcycle farther ahead slightly left continues straight in the adjacent lane at a steady pace, moving with the flow but not impeding the ego path. Oncoming cars across the median proceed steadily. Parked cars line the left curb, narrowing that side visually.", "hazard_reasoning": "There is a gray van driving away from the ego car, in front of the ego car in the ego lane, because the road ahead is clear. The vehicle ahead may brake suddenly or slow down without warning, so maintain a safe following distance."}
{"id": "train_00064", "split": "train", "clip_key": "titan_clip_1099_000288_movie", "source": {"subset": "titan", "scenario": "clip_1099", "frame": "000288"}, "frames": ["titan_clip_1099_000288_movie_t-3.jpg", "titan_clip_1099_000288_movie_t-2.jpg", "titan_clip_1099_000288_movie_t-1.jpg", "titan_clip_1099_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision.", "environment_perception": "An urban shopping arcade on a narrow stone-paved street has no lane markings or sidewalks, with storefronts on both sides and moderate foot traffic; menu boards and displays encroach at the edges. Vehicle movement is very slow with no other motor traffic visible. On the left edge near the ego path, a man in a white shirt and black pants carrying a bag walks along the roadway because there is no sidewalk. Several pedestrians ahead in the center walk toward the camera and pass across the path, constraining the pace. A small group farther ahead moves away in the same direction along the middle of the route, occupying the lane and narrowing the passage. Additional people linger near shop fronts, and freestanding signs protrude into the roadway, further reducing clearance.", "hazard_reasoning": "There is a man, wearing a white shirt and black pants, carrying a bag, walking, on the left side of the road, because there is no sidewalk. The driver should slow down to avoid collision with the pedestrian walking close to the vehicle path."}
{"id": "train_00065", "split": "train", "clip_key": "2020-0227-104226_034412_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "034412"}, "frames": ["2020-0227-104226_034412_movie_t-3.jpg", "2020-0227-104226_034412_movie_t-2.jpg", "2020-0227-104226_034412_movie_t-1.jpg", "2020-0227-104226_034412_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with no median and dry, well-kept pavement leads into a signalized intersection, and traffic is moderate. A white box truck directly ahead in the ego lane slows with brake lights on because of traffic congestion ahead, setting the pace for the ego vehicle. At the left crosswalk, a pedestrian walks forward while a cyclist waits by the curb, and either may enter the ego lane at the intersection. In the opposite direction, a blue truck approaches through the junction, moving straight and staying within the oncoming lane.", "hazard_reasoning": "There's a white truck, with brake lights on, slowing down in the ego lane, because of traffic congestion ahead. Follow the vehicle ahead to maintain a safe distance and adapt to slowing traffic."}
{"id": "train_00066", "split": "train", "clip_key": "2020-0214-145407_036550_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "036550"}, "frames": ["2020-0214-145407_036550_movie_t-3.jpg", "2020-0214-145407_036550_movie_t-2.jpg", "2020-0214-145407_036550_movie_t-1.jpg", "2020-0214-145407_036550_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban arterial with three same-direction lanes runs alongside an elevated structure, with smooth pavement and light, steady traffic. A white box truck directly ahead in the ego lane moves right and changes into the adjacent right lane, briefly constraining the ego vehicle's pace as it merges. A black taxi farther ahead in the left lane continues straight without affecting the ego path, while a few more vehicles travel ahead at distance. Overhead directional signs span the road, and a signalized intersection is visible farther ahead.", "hazard_reasoning": "There is a white truck lane changing in front of the ego car, from the ego lane to the right lane. This maneuver reduces the gap and may force sudden braking, so the driver should slow down to maintain a safe following distance."}
{"id": "train_00067", "split": "train", "clip_key": "titan_clip_22_000516_movie", "source": {"subset": "titan", "scenario": "clip_22", "frame": "000516"}, "frames": ["titan_clip_22_000516_movie_t-3.jpg", "titan_clip_22_000516_movie_t-2.jpg", "titan_clip_22_000516_movie_t-1.jpg", "titan_clip_22_000516_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction runs between tall buildings, with clean pavement and light traffic as the ego vehicle approaches a marked crosswalk at an intersection. A pedestrian wearing all black crosses on the crosswalk directly ahead from left to right toward the right side of the road, controlling the ego vehicle's pace. On the right edge another pedestrian steps onto the crosswalk heading left and may enter the ego lane next. Beyond the intersection a small white car and a box truck stand ahead in the same lane, narrowing the path further down the street.", "hazard_reasoning": "There is a pedestrian wearing all black on the crosswalk, crossing to the right side of the road. The driver should stop to yield as the pedestrian is already in the crossing path and may be obscured by the parked truck."}
{"id": "train_00068", "split": "train", "clip_key": "2020-0225-102455_016117_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "016117"}, "frames": ["2020-0225-102455_016117_movie_t-3.jpg", "2020-0225-102455_016117_movie_t-2.jpg", "2020-0225-102455_016117_movie_t-1.jpg", "2020-0225-102455_016117_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane one-way road with smooth pavement approaches a signalized intersection, and traffic is moderate with a queue in the right lane. Ahead in the ego lane, a small white truck drives away from the camera and continues straight as the light shows green, increasing the gap to the ego vehicle. In the adjacent right lane, a dark work truck rolls slowly with the queued traffic, which limits space for any lane changes near the intersection. Alongside and slightly ahead on the right, a white wagon advances at a similar pace in its lane without encroaching on the ego path. The traffic signal facing the ego direction is green, and construction fencing lines the left sidewalk.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because of the green traffic lights ahead. The driver should follow the truck's movement to maintain safe speed and avoid sudden braking if the light changes."}
{"id": "train_00069", "split": "train", "clip_key": "titan_clip_480_000246_movie", "source": {"subset": "titan", "scenario": "clip_480", "frame": "000246"}, "frames": ["titan_clip_480_000246_movie_t-3.jpg", "titan_clip_480_000246_movie_t-2.jpg", "titan_clip_480_000246_movie_t-1.jpg", "titan_clip_480_000246_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban shopping street with block paving and no marked centerline runs between shops; the surface looks good and vehicle traffic is light. A small black van travels ahead in the ego path, moving away and setting the pace. On the right side of the road, a pedestrian in a white shirt and black pants walks away from the ego car along the curb, close to the lane. Nearer on the right by orange cones, another pedestrian carrying bags walks toward the ego vehicle along the curbside, adjacent to the lane. Temporary cones and bollards line the curbs.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the right side of the road, away from the ego car. The pedestrian walking near the roadway edge may unexpectedly move into the lane, requiring the driver to stay alert and reduce speed to avoid collision."}
{"id": "train_00070", "split": "train", "clip_key": "2020-0129-144857_022695_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "022695"}, "frames": ["2020-0129-144857_022695_movie_t-3.jpg", "2020-0129-144857_022695_movie_t-2.jpg", "2020-0129-144857_022695_movie_t-1.jpg", "2020-0129-144857_022695_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs under an elevated structure, with dry pavement, a painted gore on the left and a right-side guardrail; traffic is light and steady. Ahead in the left lane, a white truck drives away from the ego car, gradually opening the gap. Slightly farther ahead to the left, a silver hatchback continues in the same direction at a steady pace without affecting the ego lane. Beyond the guardrail on the right, separate traffic moves along a parallel roadway and does not interact.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00071", "split": "train", "clip_key": "2020-0214-102601_056862_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "056862"}, "frames": ["2020-0214-102601_056862_movie_t-3.jpg", "2020-0214-102601_056862_movie_t-2.jpg", "2020-0214-102601_056862_movie_t-1.jpg", "2020-0214-102601_056862_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under elevated expressways, with smooth red-painted pavement and a right-edge guardrail; traffic is moderate and queuing at an intersection. Directly ahead in the ego lane, a blue car is stopped for the red traffic light, holding the ego vehicle. In the lane to the right, a white box truck waits slightly ahead at the same signal and remains parallel to the ego car. To the left, a grey sedan inches forward in the queue, passing the ego vehicle and reducing lateral space. The overhead signal facing the ego direction is clearly red.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, because of a red traffic light. Stop to avoid a collision with the halted vehicle and comply with the traffic signal."}
{"id": "train_00072", "split": "train", "clip_key": "titan_clip_175_000102_movie", "source": {"subset": "titan", "scenario": "clip_175", "frame": "000102"}, "frames": ["titan_clip_175_000102_movie_t-3.jpg", "titan_clip_175_000102_movie_t-2.jpg", "titan_clip_175_000102_movie_t-1.jpg", "titan_clip_175_000102_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane in each direction and no median appears, the ego car approaching a small intersection on smooth pavement with light traffic. On the near left, a pedestrian in a blue shirt carrying a handbag walks away from the ego along the crosswalk, moving across the ego lane and constraining the pace. On the near right, a person holding a white umbrella steps off the curb to cross toward the left, entering the ego lane area. At the left side of the intersection, a white van is stopped beside the crosswalk while the pedestrians cross. A black sedan is parked along the right curb ahead.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, carrying a handbag, and walking away from the ego car. The driver should slow down to maintain control and avoid collision if the pedestrian steps back toward the roadway without warning."}
{"id": "train_00073", "split": "train", "clip_key": "2020-0220-102630_008267_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "008267"}, "frames": ["2020-0220-102630_008267_movie_t-3.jpg", "2020-0220-102630_008267_movie_t-2.jpg", "2020-0220-102630_008267_movie_t-1.jpg", "2020-0220-102630_008267_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection with smooth pavement and no physical median, and traffic in the ego direction is queued and stopped. A silver sedan directly ahead in the ego lane stands still at the stop line for the red signal, holding the ego vehicle. A small silver hatchback in the adjacent right lane is also stopped slightly ahead, waiting for the light and aligned beside the ego car. Several pedestrians wait by the left-side crosswalk, and a cyclist moves along the near-left corner without entering the ego lane. Overhead traffic lights facing the ego direction show red.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, because of a red traffic light. You should stop immediately to avoid a collision with the stationary vehicle at the red light."}
{"id": "train_00074", "split": "train", "clip_key": "titan_clip_684_000390_movie", "source": {"subset": "titan", "scenario": "clip_684", "frame": "000390"}, "frames": ["titan_clip_684_000390_movie_t-3.jpg", "titan_clip_684_000390_movie_t-2.jpg", "titan_clip_684_000390_movie_t-1.jpg", "titan_clip_684_000390_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of the pedestrian at the roadside", "environment_perception": "An urban commercial street is shown, a narrow roadway without a centerline and smooth asphalt, with light to no vehicle traffic in either direction. Shops crowd both sides as the scene progresses with mostly pedestrian movement. On the right edge near the foreground, a pedestrian wearing a pink T-shirt and white skirt stands partly in the roadway and may enter the ego path. Ahead near the center-right, another pedestrian walks along the lane away from the camera, constraining the space available to pass. Farther ahead at the right curb, a person stands beside a bicycle, waiting and facing the road without moving into the lane. Other pedestrians continue along both sidewalks, and sandwich boards and parked bicycles cluster at the right curb.", "hazard_reasoning": "There is a pedestrian wearing a pink t-shirt and a white skirt, and standing on the right side of the road. The pedestrian could step into the roadway unexpectedly, so the driver should be aware of their presence when passing."}
{"id": "train_00075", "split": "train", "clip_key": "2020-0225-102455_007886_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "007886"}, "frames": ["2020-0225-102455_007886_movie_t-3.jpg", "2020-0225-102455_007886_movie_t-2.jpg", "2020-0225-102455_007886_movie_t-1.jpg", "2020-0225-102455_007886_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with good pavement runs between midrise buildings, and traffic is moderate but slows as vehicles queue near a signalized intersection ahead. A yellow sedan directly ahead in the ego lane slows because of congestion and governs the ego car's pace. A large dump truck in the adjacent right lane travels slightly ahead at a crawl, remaining in its lane and narrowing right-side clearance. Several cars and vans farther ahead in both lanes form a short line moving slowly toward the junction. No oncoming traffic is visible in this view, and there are no obstacles or work zones along the roadway.", "hazard_reasoning": "There is a yellow sedan, slowing down in the ego lane, in front of the ego car, because of traffic congestion ahead. The yellow sedan is reducing speed due to congestion ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_00076", "split": "train", "clip_key": "2020-0204-150838_015171_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "015171"}, "frames": ["2020-0204-150838_015171_movie_t-3.jpg", "2020-0204-150838_015171_movie_t-2.jpg", "2020-0204-150838_015171_movie_t-1.jpg", "2020-0204-150838_015171_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane divided boulevard with smooth pavement approaches a signalized intersection, and same-direction traffic is slow and dense. The ego-vehicle travels in a center lane while a small white microvan directly ahead moves at low speed, constraining the ego car. Ahead slightly right, a white sedan in the adjacent lane slows because of congestion ahead. To the front-left, a black taxi in the left-turn lane also decelerates with the flow. Overhead gantry signs show lane directions, and a shrub median separates opposing traffic.", "hazard_reasoning": "There's a white sedan slowing in front of the ego-car, because of traffic congestion ahead. The sedan's reduced speed due to congestion may require the driver to decelerate promptly to maintain a safe following distance and avoid a collision under these conditions."}
{"id": "train_00077", "split": "train", "clip_key": "2020-0131-135401_023512_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "023512"}, "frames": ["2020-0131-135401_023512_movie_t-3.jpg", "2020-0131-135401_023512_movie_t-2.jpg", "2020-0131-135401_023512_movie_t-1.jpg", "2020-0131-135401_023512_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with two lanes in the ego direction runs between buildings and a visible amusement-dark structure, the dark new pavement bordered by long rows of cones and mesh fencing, and overall flow is light and steady. A black SUV ahead in the right lane slows because traffic is bunching up ahead, which constrains the ego car's pace. A small sedan farther ahead in the same right lane also eases off and keeps a short gap. The work zone narrows the roadway on the right as cones intrude into that lane, creating a mild bottleneck.", "hazard_reasoning": "There is a black SUV slowing in front of the ego car, in the right lane, because of traffic congestion ahead. The slowing indicates traffic congestion ahead, so the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_00078", "split": "train", "clip_key": "titan_clip_187_000282_movie", "source": {"subset": "titan", "scenario": "clip_187", "frame": "000282"}, "frames": ["titan_clip_187_000282_movie_t-3.jpg", "titan_clip_187_000282_movie_t-2.jpg", "titan_clip_187_000282_movie_t-1.jpg", "titan_clip_187_000282_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single lane per direction approaches a small intersection between close-set buildings; the pavement looks smooth and traffic appears light. A small flatbed truck with a yellow tarp moves laterally across the intersection immediately ahead on the cross street, momentarily occupying the ego vehicle's path. At the marked crosswalk beyond, a pedestrian wearing a striped shirt and brown pants crosses from the left to the right, moving through the ego lane and directly affecting the vehicle's progress. No traffic signals or median are visible, and no other same-direction or oncoming vehicles are near.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt and brown pants, and crossing the street, from the left side to the right side, at the crosswalk ahead at the intersection. The driver should stop to allow the pedestrian to cross safely."}
{"id": "train_00079", "split": "train", "clip_key": "2020-0207-101955_026721_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "026721"}, "frames": ["2020-0207-101955_026721_movie_t-3.jpg", "2020-0207-101955_026721_movie_t-2.jpg", "2020-0207-101955_026721_movie_t-1.jpg", "2020-0207-101955_026721_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with multiple lanes and smooth pavement sees moderate traffic queuing near a signalized intersection. A green covered truck directly ahead in the ego lane is stopped at the line because the overhead signal shows red. To the immediate left, a white sedan in the adjacent curbside lane waits alongside, holding position next to the truck and limiting lateral options. On the far left edge, a delivery motorcycle inches forward between the curb and the sedan, filtering toward the front and possibly entering the ego lane when movement resumes. Oncoming cars to the right proceed through the intersection.", "hazard_reasoning": "There is a green truck stopped in the ego lane because of the red traffic light ahead in the intersection. The driver should Stop to avoid running the red light and maintain a safe following distance."}
{"id": "train_00080", "split": "train", "clip_key": "2020-0205-103411_118749_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "118749"}, "frames": ["2020-0205-103411_118749_movie_t-3.jpg", "2020-0205-103411_118749_movie_t-2.jpg", "2020-0205-103411_118749_movie_t-1.jpg", "2020-0205-103411_118749_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way road with guardrails and a painted centerline runs under a pedestrian overpass; the dry pavement is in good condition and traffic is moderate but slow. A black compact hatchback is stopped directly ahead in the ego lane, holding the ego vehicle at a standstill. A white minivan in the adjacent right lane creeps forward past the queue, potentially overtaking. Farther ahead in that right lane, a small white truck proceeds at a steady crawl toward the overpass, setting that lane's pace. No unusual hazards are visible.", "hazard_reasoning": "There is a black compact hatchback stopped in the ego lane in front of the ego car, because of the red traffic light. The driver should stop promptly to avoid a rear-end collision with the halted vehicle and comply with the traffic signal."}
{"id": "train_00081", "split": "train", "clip_key": "2020-0220-102630_111058_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "111058"}, "frames": ["2020-0220-102630_111058_movie_t-3.jpg", "2020-0220-102630_111058_movie_t-2.jpg", "2020-0220-102630_111058_movie_t-1.jpg", "2020-0220-102630_111058_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with a single lane each direction runs past small shops, with no median and smooth pavement; traffic is light and the ego lane ahead is clear as it approaches a marked intersection. Two oncoming vehicles, a white van and a small car, approach in their lane ahead without encroaching on the ego path. Another white van is stopped or parked by the right curb in the oncoming lane, remaining outside the ego lane. A cyclist on the far right near the corner rides slowly along the curb in the oncoming direction and does not enter the ego path. An overhead traffic signal hangs above the intersection with prominent zebra crossings.", "hazard_reasoning": "The road is clear with no obstacles or signal changes, so the driver can maintain speed and continue through the intersection."}
{"id": "train_00082", "split": "train", "clip_key": "titan_clip_449_000552_movie", "source": {"subset": "titan", "scenario": "clip_449", "frame": "000552"}, "frames": ["titan_clip_449_000552_movie_t-3.jpg", "titan_clip_449_000552_movie_t-2.jpg", "titan_clip_449_000552_movie_t-1.jpg", "titan_clip_449_000552_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Yield to the crossing cyclist", "environment_perception": "An urban two-way street approaches a perpendicular cross street with a single left-hand lane, no median, and clean pavement; traffic on the cross street flows steadily. The ego vehicle is stopped at a zebra crossing. A cyclist wearing an orange helmet rides across the pedestrian crossing directly ahead from right to left in front of the ego car, temporarily occupying the lane. On the right foreground, a pedestrian walks past the curb at the edge of the crosswalk and clears the lane. Across the intersection, several vehicles including a black car and a white van travel left to right on the cross street, keeping the ego stationary. A blue pedestrian-crossing sign is posted at the approach.", "hazard_reasoning": "There is a cyclist wearing an orange helmet, crossing the street in front of the ego car, at the pedestrian crossing. The cyclist's path intersects the ego-vehicle's trajectory, so the driver must give right of way to avoid a collision."}
{"id": "train_00083", "split": "train", "clip_key": "2020-0203-154554_041999_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "041999"}, "frames": ["2020-0203-154554_041999_movie_t-3.jpg", "2020-0203-154554_041999_movie_t-2.jpg", "2020-0203-154554_041999_movie_t-1.jpg", "2020-0203-154554_041999_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene beneath an elevated expressway shows a narrow ramp with one marked lane in the ego direction, bounded by concrete barriers and guardrails; the pavement appears smooth and traffic is light as the road curves right. A white truck drives ahead in the ego lane and steadily pulls away along the curve, effectively setting the pace. On a lower parallel road to the right, a few cars travel independently without interacting with the ramp. Green overhead direction signs hang under the structure, and no pedestrians, cyclists, or obstacles are visible in the lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00084", "split": "train", "clip_key": "2020-0214-145407_023555_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "023555"}, "frames": ["2020-0214-145407_023555_movie_t-3.jpg", "2020-0214-145407_023555_movie_t-2.jpg", "2020-0214-145407_023555_movie_t-1.jpg", "2020-0214-145407_023555_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes shows smooth pavement and steady moderate flow, with a low hedge as the median and metal rails along the left verge. A red truck directly ahead in the left ego lane drives away from the camera at a constant pace, setting the ego car's speed. A line of cars in the adjacent right lane continues ahead and occupies the space for a lane change. An overhead green sign displays directions toward Haneda and the Chuo Expressway with 900 m indicated.", "hazard_reasoning": "There is a red truck driving in the ego lane, away from the ego car. The red truck ahead may change speed or direction unexpectedly, so the driver should maintain a safe following distance by following the vehicle ahead."}
{"id": "train_00085", "split": "train", "clip_key": "2020-0225-102455_009458_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "009458"}, "frames": ["2020-0225-102455_009458_movie_t-3.jpg", "2020-0225-102455_009458_movie_t-2.jpg", "2020-0225-102455_009458_movie_t-1.jpg", "2020-0225-102455_009458_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction runs between mid-rise buildings, with a painted median and smooth pavement; traffic is moderate and moving steadily. Ahead in the ego lane, a black dump truck continues straight and slowly pulls away from the camera, effectively setting the pace. In the adjacent curb lane to the left, a white convertible and several other cars travel alongside and occasionally slow near shops, keeping the lane busy. On the far side of the median, a white van and other oncoming vehicles proceed straight without affecting the ego's path. A large yellow 50 marking on the roadway indicates the posted speed.", "hazard_reasoning": "There is a black truck driving in the ego lane, away from the ego car. This lead truck may brake unexpectedly or obscure upcoming hazards, so follow the vehicle ahead."}
{"id": "train_00086", "split": "train", "clip_key": "titan_clip_1233_000042_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1233_000042_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1233_000042_movie_t-3_augB1.jpg", "titan_clip_1233_000042_movie_t-2_augB1.jpg", "titan_clip_1233_000042_movie_t-1_augB1.jpg", "titan_clip_1233_000042_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "A narrow urban street with a single lane and green edge strips runs between buildings; the pavement is worn but intact, and traffic is light with no opposing vehicles visible. Two pedestrians, one in a white shirt and one in a blue dress, walk ahead along the left edge away from the ego car, close to the lane and potentially drifting into the travel path. Another pedestrian is farther ahead near the center of the lane walking away in the same direction, temporarily constraining the ego vehicle's pace. A white mini-van is stopped at the right curb ahead, positioned where it may merge into the lane.", "hazard_reasoning": "There are two pedestrians wearing a white shirt and a blue dress, walking on the left side of the road, away from the ego car. Carefully manoeuvre around the pedestrians to avoid a collision given their proximity to the vehicle."}
{"id": "train_00087", "split": "train", "clip_key": "titan_clip_849_000378_movie", "source": {"subset": "titan", "scenario": "clip_849", "frame": "000378"}, "frames": ["titan_clip_849_000378_movie_t-3.jpg", "titan_clip_849_000378_movie_t-2.jpg", "titan_clip_849_000378_movie_t-1.jpg", "titan_clip_849_000378_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with a single lane and no median uses block paving, and traffic flow is slow because delivery trucks are stopped along the right curb. Ahead, a pedestrian in a white shirt and black pants crosses the ego lane from right to left directly in front of the vehicle toward the left side, briefly occupying the path. On the left just ahead, another pedestrian with shopping bags walks along the curb toward the left edge and remains outside the lane. To the right, two stopped box trucks line the curb, narrowing the roadway and partly blocking the forward view toward additional service vehicles in the distance.", "hazard_reasoning": "A pedestrian wearing a white shirt with black pants is crossing in front of the ego car to the left side of the lane. The parked trucks restrict visibility ahead, increasing the collision risk if speed is not reduced."}
{"id": "train_00088", "split": "train", "clip_key": "2020-0228-102841_089954_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "089954"}, "frames": ["2020-0228-102841_089954_movie_t-3.jpg", "2020-0228-102841_089954_movie_t-2.jpg", "2020-0228-102841_089954_movie_t-1.jpg", "2020-0228-102841_089954_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging vehicle", "environment_perception": "An urban two-way street with one narrow lane each direction climbs uphill past buildings, separated by a solid yellow line; pavement is clean and traffic is light. A white hatchback ahead in the ego lane proceeds uphill at low speed, setting the pace. On the right, a large white truck stands stopped along the oncoming lane near the curb. On the left side near a side entrance, a white sedan waits to turn onto the road and may enter the ego lane. A posted 40 sign and turn-prohibition signs are visible at the intersection. Cones and barricades line the left curb as a small work area.", "hazard_reasoning": "There is a white sedan on the left side of the road that is waiting to turn onto the road. The sedan may merge into your lane unexpectedly, so the driver should be aware and adjust speed or position to maintain a safe distance."}
{"id": "train_00089", "split": "train", "clip_key": "2020-0206-142535_023272_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "023272"}, "frames": ["2020-0206-142535_023272_movie_t-3.jpg", "2020-0206-142535_023272_movie_t-2.jpg", "2020-0206-142535_023272_movie_t-1.jpg", "2020-0206-142535_023272_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop before the intersection and maintain safe distance.", "environment_perception": "An urban multi-lane arterial with a raised median and smooth pavement shows heavy queued traffic in the ego's direction, while oncoming traffic flows on the far side. In the ego lane a silver hatchback is stopped directly ahead at a red light, holding the ego car. Ahead slightly left, a large white box truck in the adjacent lane is also stopped for the signal, limiting forward visibility. To the left, a white van in the neighboring lane waits alongside, keeping the ego vehicle boxed in.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop to comply with the red light and avoid a collision with the halted vehicle ahead."}
{"id": "train_00090", "split": "train", "clip_key": "titan_clip_1218_000096_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1218_000096_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1218_000096_movie_t-3_augB1.jpg", "titan_clip_1218_000096_movie_t-2_augB1.jpg", "titan_clip_1218_000096_movie_t-1_augB1.jpg", "titan_clip_1218_000096_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single left-hand travel lane and no median runs between storefronts; the pavement looks smooth and traffic proceeds slowly with no oncoming vehicles in view. A small white light truck ahead in the ego lane creeps forward in the center, constraining the ego vehicle's pace. A pedestrian wearing a white shirt steps from the right sidewalk into the middle of the road and walks leftward across ahead of the ego vehicle, occupying its path. A white minivan stands along the left edge near the ego, encroaching slightly and reducing clearance.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, crossing the street in the middle of the road, from the right side to the left side. The driver's view ahead is partially blocked by a parked truck, so reducing speed is necessary to safely react to unexpected pedestrian movements."}
{"id": "train_00091", "split": "train", "clip_key": "titan_clip_644_000396_movie", "source": {"subset": "titan", "scenario": "clip_644", "frame": "000396"}, "frames": ["titan_clip_644_000396_movie_t-3.jpg", "titan_clip_644_000396_movie_t-2.jpg", "titan_clip_644_000396_movie_t-1.jpg", "titan_clip_644_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway, one lane each direction, no median, smooth asphalt, and light traffic. Green shoulder markings line the storefronts. On the left near the curb, a pedestrian in a black shirt carrying a blue umbrella walks away from the ego car along the edge, remaining outside the lane. Ahead near the center-right, an adult with a child walks across toward the left and partially enters the ego lane, influencing the vehicle's pace. Far ahead in the opposing lane on the right, a white car approaches slowly while keeping to its side. Bicycles are parked along the right curb.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and carrying a blue umbrella, walking on the left side of the road, away from the ego car. The driver should slow down to maintain a safe distance and be prepared if the pedestrian alters direction."}
{"id": "train_00092", "split": "train", "clip_key": "titan_clip_360_000300_movie", "source": {"subset": "titan", "scenario": "clip_360", "frame": "000300"}, "frames": ["titan_clip_360_000300_movie_t-3.jpg", "titan_clip_360_000300_movie_t-2.jpg", "titan_clip_360_000300_movie_t-1.jpg", "titan_clip_360_000300_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians crossing", "environment_perception": "A narrow urban street with interlocking-brick pavement and no marked center line runs between shops and apartments, and traffic is light and slow. Ahead at the intersection, two pedestrians cross from left to right, one in a white T-shirt carrying a backpack, moving through the ego lane and constraining its speed. Near them on the left, a white car waits at a driveway with its nose into the roadway and may enter the lane. Farther ahead, a delivery truck stands along the left curb while people walk nearby, narrowing the passage. A convex mirror on the left and a roadside no-parking sign are visible.", "hazard_reasoning": "Two pedestrians, one wearing a white t-shirt and carrying a backpack, are crossing the street from the left side of the intersection to the right side of the intersection because of the pedestrian pavement. The driver should be aware of them as they may cross into the vehicle's path unexpectedly."}
{"id": "train_00093", "split": "train", "clip_key": "titan_clip_1073_000510_movie", "source": {"subset": "titan", "scenario": "clip_1073", "frame": "000510"}, "frames": ["titan_clip_1073_000510_movie_t-3.jpg", "titan_clip_1073_000510_movie_t-2.jpg", "titan_clip_1073_000510_movie_t-1.jpg", "titan_clip_1073_000510_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van", "environment_perception": "An urban neighborhood street curves gently right, a narrow two-way road with clean pavement and light traffic. Ahead, two pedestrians cross from the left storefront side toward the right sidewalk, moving across the ego path. On the right at the start of the bend, a white van is parked partly in the ego lane, narrowing the passage through the curve. Farther ahead on the right sidewalk, another person walks away from the camera and stays off the roadway.", "hazard_reasoning": "There is a white van parked on the right side of the road, in the ego lane. The parked van obstructs the ego lane and requires the driver to manoeuvre around it to avoid collision."}
{"id": "train_00094", "split": "train", "clip_key": "2020-0226-140503_101016_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "101016"}, "frames": ["2020-0226-140503_101016_movie_t-3.jpg", "2020-0226-140503_101016_movie_t-2.jpg", "2020-0226-140503_101016_movie_t-1.jpg", "2020-0226-140503_101016_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road leads to a signalized intersection with a low planted median on the right; the pavement looks smooth and traffic moves steadily with light to moderate flow. A white truck ahead in the ego lane proceeds straight through the intersection under a green light, effectively setting the pace for the ego car. A black car farther ahead in the same direction continues straight in the adjacent lane and pulls away. Oncoming vans in the opposite lanes to the right pass through the junction without interacting with the ego's path.", "hazard_reasoning": "There is a white truck driving in front of the ego car in the ego lane, because of the green traffic light. The truck ahead could brake suddenly or obscure obstacles, so the driver should remain cautious."}
{"id": "train_00095", "split": "train", "clip_key": "titan_clip_1186_000348_movie", "source": {"subset": "titan", "scenario": "clip_1186", "frame": "000348"}, "frames": ["titan_clip_1186_000348_movie_t-3.jpg", "titan_clip_1186_000348_movie_t-2.jpg", "titan_clip_1186_000348_movie_t-1.jpg", "titan_clip_1186_000348_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban multi-lane road with tall buildings and smooth pavement runs straight, and traffic flows at a moderate, steady pace in the same direction. A large truck is stopped along the left curb, slightly narrowing the near lane. Ahead in the center of the path, a motorcycle travels forward from near-midrange, keeping pace with traffic and shaping the ego vehicle's following distance. Farther ahead in the same lane, a white SUV proceeds steadily, forming the main vehicle the ego follows. In the adjacent right lane, a black hatchback continues forward slightly faster. On the far left, a man with gray hair in a black shirt and gray pants stands beside the parked truck close to the travel lane.", "hazard_reasoning": "There is a man with gray hair, wearing a black shirt and gray pants, standing on the left side of the road, because he is standing beside a parked truck. The pedestrian's position behind the truck limits visibility and could lead him to step into traffic unexpectedly, so the driver should manoeuvre around him."}
{"id": "train_00096", "split": "train", "clip_key": "titan_clip_1001_000582_movie", "source": {"subset": "titan", "scenario": "clip_1001", "frame": "000582"}, "frames": ["titan_clip_1001_000582_movie_t-3.jpg", "titan_clip_1001_000582_movie_t-2.jpg", "titan_clip_1001_000582_movie_t-1.jpg", "titan_clip_1001_000582_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban street with one narrow lane and no median has smooth, damp pavement and light traffic. A box truck is stopped ahead along the left edge of the ego lane, partly blocking the path and constraining the approach. A pedestrian wearing a black T-shirt and black pants comes from the left beside the truck and walks toward the right around the parked vehicle, potentially entering the ego lane. Far ahead, a few same-direction cars continue away without interaction. Bollards line the right sidewalk and landscaping borders the left, with no salient signals visible.", "hazard_reasoning": "There's a pedestrian wearing a black t-shirt, wearing black pants, walking on the left side of the road, towards the right, because of the parked vehicle. The pedestrian may step into the lane unexpectedly due to the truck obstruction, so the driver must adjust path to avoid collision."}
{"id": "train_00097", "split": "train", "clip_key": "2020-0206-101736_076367_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "076367"}, "frames": ["2020-0206-101736_076367_movie_t-3.jpg", "2020-0206-101736_076367_movie_t-2.jpg", "2020-0206-101736_076367_movie_t-1.jpg", "2020-0206-101736_076367_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction and a painted median to the right has dry, well-marked pavement and heavy, stop-and-go flow. A gray flatbed truck is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle at a standstill. In the adjacent left lane a loaded white truck slightly ahead creeps forward, constraining space to merge. A small white van alongside on the left edges past slowly, further reducing lateral room. Beyond the painted median on the right, oncoming cars move independently without interacting.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted truck caused by the congestion."}
{"id": "train_00098", "split": "train", "clip_key": "2020-0203-114632_084920_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "084920"}, "frames": ["2020-0203-114632_084920_movie_t-3.jpg", "2020-0203-114632_084920_movie_t-2.jpg", "2020-0203-114632_084920_movie_t-1.jpg", "2020-0203-114632_084920_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road runs beneath an elevated structure, with one lane each way, no median, smooth asphalt, and light traffic. A white minivan directly ahead in the left-hand ego lane slows, setting the pace for the ego car. At a left-side side street near a crosswalk, a small white van waits angled to merge into the main road and may enter the ego lane. Slightly ahead along the left curb, a white hatchback stands close to the travel lane, narrowing the usable space. A narrow sidewalk with guardrails lines the right, and viaduct pillars create intermittent shadow and partial sightline occlusion.", "hazard_reasoning": "There is a minivan slowing in the ego lane, in front of the ego car. Since the minivan is decelerating, you must slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_00099", "split": "train", "clip_key": "titan_clip_456_000660_movie", "source": {"subset": "titan", "scenario": "clip_456", "frame": "000660"}, "frames": ["titan_clip_456_000660_movie_t-3.jpg", "titan_clip_456_000660_movie_t-2.jpg", "titan_clip_456_000660_movie_t-1.jpg", "titan_clip_456_000660_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around traffic cones", "environment_perception": "An urban two-way street with one lane in each direction climbs gently and curves right, the pavement smooth and traffic light. Orange traffic cones line the middle of the road for construction, narrowing the usable space beside the right curb. On the right ahead, several construction workers move about within the coned work zone near the ego lane, relevant because they work close to passing traffic. A white work truck and an excavator are stopped along the right edge, and their presence further pinches the lane and constrains the ego vehicle's pace. Pedestrians walk on the left sidewalk parallel to traffic but remain separated from the roadway. No oncoming vehicles are evident in the visible segment.", "hazard_reasoning": "There are orange traffic cones in the middle of the road because of construction. The cones reduce lane width and guide traffic around the work zone, so the driver should navigate carefully to avoid them."}
{"id": "train_00100", "split": "train", "clip_key": "2020-0206-142535_005891_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "005891"}, "frames": ["2020-0206-142535_005891_movie_t-3.jpg", "2020-0206-142535_005891_movie_t-2.jpg", "2020-0206-142535_005891_movie_t-1.jpg", "2020-0206-142535_005891_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of bus cutting in", "environment_perception": "An urban two-way street with one narrow lane each way has smooth pavement and light traffic; no median is present and the view stays consistent. A small white box truck proceeds ahead in the ego lane at low speed, limiting the ego vehicle's pace. Oncoming in the right lane, a pink bus moves toward the center to pass a black van stopped at the curb, cutting into the ego lane as it maneuvers around the parked car. The black van is stationary along the oncoming curb close to the ego path, occupying that lane and causing the bus's incursion. Temporary barriers and cones line the left edge near the ego vehicle, slightly narrowing the lane.", "hazard_reasoning": "A pink bus in the right lane is cutting in to the ego lane, because it is maneuvering around a parked car. The bus's unexpected lane change may encroach on your path, requiring you to be cautious."}
{"id": "train_00101", "split": "train", "clip_key": "titan_clip_1039_000414_movie", "source": {"subset": "titan", "scenario": "clip_1039", "frame": "000414"}, "frames": ["titan_clip_1039_000414_movie_t-3.jpg", "titan_clip_1039_000414_movie_t-2.jpg", "titan_clip_1039_000414_movie_t-1.jpg", "titan_clip_1039_000414_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A narrow urban street with trees and sidewalks has smooth pavement and light traffic on a two-way road without a median. The ego vehicle travels in the left lane, and no oncoming vehicles are visible. A small dark car ahead in the same lane moves steadily away and loosely sets the pace. On the right, a white construction truck is parked at the curb while a line of orange traffic cones on the right side marks the work area and indicates the parked construction vehicles, narrowing the usable roadway. A child crossing warning sign and a no-parking sign stand on the left.", "hazard_reasoning": "There is an orange traffic cone, on the right side of the road, indicating parked construction vehicles. Drivers should slow down because the cone marks a potential obstruction requiring reduced speed for safe navigation around the work area."}
{"id": "train_00102", "split": "train", "clip_key": "2020-0205-103411_077503_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "077503"}, "frames": ["2020-0205-103411_077503_movie_t-3.jpg", "2020-0205-103411_077503_movie_t-2.jpg", "2020-0205-103411_077503_movie_t-1.jpg", "2020-0205-103411_077503_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three lanes in the ego direction and a painted median runs through midrise buildings; the pavement is smooth and traffic is moderate and steady. Directly ahead in the ego lane, a dark truck drives away while slowing, which controls the ego car's pace. Slightly ahead to the left, a white box truck travels in the neighboring same-direction lane at a similar speed, staying alongside and limiting an immediate lane change. In the opposite lanes to the right, an oncoming small truck approaches steadily, separated by the median and not interacting with the ego path. Traffic signals are visible at the intersection ahead.", "hazard_reasoning": "There's a black truck slowing down, in the ego lane, driving away from the ego car. You should slow down to maintain a safe following distance as the truck ahead is reducing speed."}
{"id": "train_00103", "split": "train", "clip_key": "2020-0207-101955_040653_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "040653"}, "frames": ["2020-0207-101955_040653_movie_t-3.jpg", "2020-0207-101955_040653_movie_t-2.jpg", "2020-0207-101955_040653_movie_t-1.jpg", "2020-0207-101955_040653_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the white sedan beside you.", "environment_perception": "An urban divided arterial runs under an elevated structure with two same-direction lanes, a concrete median, and dry pavement, and traffic is light and steady. A white sedan travels directly alongside in the left-hand lane, matching speed and limiting a leftward lane change. Ahead in the ego lane a small box truck proceeds at a steady pace toward a slight rise. On the right, across the median, a black SUV and a few cars approach in the opposing carriageway and pass by. The roadway ahead splits with a ramp rising to the right and a painted gore area marking the division.", "hazard_reasoning": "There is a white sedan moving directly beside the ego-car, in the left-hand lane. The sedan could merge into the ego lane unexpectedly, so maintain awareness of its position to avoid a side collision."}
{"id": "train_00104", "split": "train", "clip_key": "2020-0206-142535_048417_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "048417"}, "frames": ["2020-0206-142535_048417_movie_t-3.jpg", "2020-0206-142535_048417_movie_t-2.jpg", "2020-0206-142535_048417_movie_t-1.jpg", "2020-0206-142535_048417_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way street with no physical median stretches ahead; the asphalt is dry and somewhat patched, and traffic is moderate with a slower segment forming farther up. A white van ahead in the ego lane slows due to congestion ahead, effectively setting our pace. Farther ahead in the same direction, several vehicles queue at low speed and close gaps cautiously. In the nearest oncoming lane to the right, a silver car approaches and passes steadily amid continuous opposing flow. On the left sidewalk, two pedestrians walk along temporary construction barriers and cones, staying behind the railing. Rails embedded in the right-side lanes are visible, but they do not affect the ego vehicle's path.", "hazard_reasoning": "There is a white van slowing in the ego lane, because of traffic congestion ahead. The van's reduced speed signals a traffic queue, so the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_00105", "split": "train", "clip_key": "2020-0204-103442_041128_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "041128"}, "frames": ["2020-0204-103442_041128_movie_t-3.jpg", "2020-0204-103442_041128_movie_t-2.jpg", "2020-0204-103442_041128_movie_t-1.jpg", "2020-0204-103442_041128_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A multi-lane urban arterial runs under an elevated roadway, the pavement dry and smooth, with heavy stop-and-go traffic. Directly ahead in the ego lane, a white bus is stopped because of congestion and blocks the path, keeping the ego car stationary. In the lane to the left, a medium box truck waits beside the bus and inches forward with little gap, limiting any left lane change. In the right lane, a silver minivan and several cars queue alongside and creep ahead, closely flanking the ego vehicle and further restricting maneuvering space. No salient traffic signals are visible, and the flow remains jammed with vehicles tightly packed.", "hazard_reasoning": "There is a white bus stopped in the ego lane, because of traffic congestion, in front of the ego car. The bus has halted traffic ahead, so the driver should stop to avoid a rear-end collision."}
{"id": "train_00106", "split": "train", "clip_key": "2020-0129-105040_073277_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "073277"}, "frames": ["2020-0129-105040_073277_movie_t-3.jpg", "2020-0129-105040_073277_movie_t-2.jpg", "2020-0129-105040_073277_movie_t-1.jpg", "2020-0129-105040_073277_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow suburban residential two-way street with one lane each way, no median, and smooth pavement curves gently left, giving short sightlines; traffic is light to moderate with a steady opposing stream. An oncoming city bus to the right passes the ego closely along the centerline as it comes through the curve, occupying much of its lane. A black sedan follows the bus in the opposing lane, approaching through the bend and continuing straight without encroaching. Farther ahead, another oncoming car follows at distance, while roadside walls and utility poles leave almost no shoulder.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00107", "split": "train", "clip_key": "titan_clip_1306_000564_movie", "source": {"subset": "titan", "scenario": "clip_1306", "frame": "000564"}, "frames": ["titan_clip_1306_000564_movie_t-3.jpg", "titan_clip_1306_000564_movie_t-2.jpg", "titan_clip_1306_000564_movie_t-1.jpg", "titan_clip_1306_000564_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A dense urban commercial street with a single narrow shared lane and no median runs between shops; the pavement is dry and vehicle traffic is light while pedestrian flow is heavy. A white box truck is stopped along the left side in the ego lane with its rear doors open, being unloaded, and red crates behind it further narrow the passage. Several pedestrians in the right foreground walk diagonally across toward the left and may step into the vehicle's path. Farther ahead, groups of pedestrians move along and across the center of the lane, constraining the available gap to proceed. A no-parking sign stands on the left and orange cones line the right.", "hazard_reasoning": "There is a white truck stopped on the left side of the road, because it is being unloaded, in the ego lane. The driver should manoeuvre carefully around the truck to avoid a collision and maintain smooth traffic flow."}
{"id": "train_00108", "split": "train", "clip_key": "2020-0203-154554_043903_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "043903"}, "frames": ["2020-0203-154554_043903_movie_t-3.jpg", "2020-0203-154554_043903_movie_t-2.jpg", "2020-0203-154554_043903_movie_t-1.jpg", "2020-0203-154554_043903_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided roadway runs under an elevated structure, with two same-direction lanes bounded by guardrails and smooth pavement, and traffic becomes slow and dense approaching a tunnel-like section. A silver sedan directly ahead in the ego lane slows as a queue of cars forms farther ahead, constraining the ego car's pace. Farther ahead, multiple vehicles in the same lane group brake and bunch up in stop-and-go flow. On the parallel left lane beyond a guardrail, a white box truck proceeds steadily with other traffic but remains separated from the ego path. Overhead Japanese direction signs span the roadway, and a small signal on the parallel lane shows red.", "hazard_reasoning": "There is a silver sedan slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid rear-end collisions due to the reduced speed of traffic ahead."}
{"id": "train_00109", "split": "train", "clip_key": "titan_clip_989_000402_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_989_000402_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_989_000402_movie_t-3_augB1.jpg", "titan_clip_989_000402_movie_t-2_augB1.jpg", "titan_clip_989_000402_movie_t-1_augB1.jpg", "titan_clip_989_000402_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with single lanes and no median runs between small shops; the pavement looks good and traffic appears light to moderate. Ahead in the ego lane, a cyclist moves away near the left edge at low speed, potentially constraining the ego vehicle's pace. In the opposing lane, an oncoming scooter and a small van approach steadily but remain in their lane. On the left margin, there is a pedestrian wearing black pants and a white shirt, carrying a white parcel, who walks away from the ego car along the roadway because there is no sidewalk.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, carrying a white parcel, who is walking on the left side of the road, away from the ego car, because there is no sidewalk. You should carefully manoeuvre around this pedestrian because they are walking on the roadway without a sidewalk."}
{"id": "train_00110", "split": "train", "clip_key": "2020-0203-114632_002131_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "002131"}, "frames": ["2020-0203-114632_002131_movie_t-3.jpg", "2020-0203-114632_002131_movie_t-2.jpg", "2020-0203-114632_002131_movie_t-1.jpg", "2020-0203-114632_002131_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the stopped hatchback", "environment_perception": "An urban commercial street with one lane each way runs straight ahead, divided by a yellow centerline on dry, smooth pavement, and traffic is light. A white hatchback is stopped at the left side of the road ahead at the curb, slightly narrowing the ego lane. At the near left edge, a small box truck is parked with its rear door open and goods on the ground behind it, further reducing space by the curb. Farther ahead, a white sedan and a small van approach in the oncoming lane, continuing straight.", "hazard_reasoning": "There is a white hatchback stopped at the left side of the road. You should manoeuvre carefully around the vehicle as it could block your lane and increase collision risk."}
{"id": "train_00111", "split": "train", "clip_key": "titan_clip_901_000426_movie", "source": {"subset": "titan", "scenario": "clip_901", "frame": "000426"}, "frames": ["titan_clip_901_000426_movie_t-3.jpg", "titan_clip_901_000426_movie_t-2.jpg", "titan_clip_901_000426_movie_t-1.jpg", "titan_clip_901_000426_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for the pedestrian crossing ahead", "environment_perception": "An urban shopping street with a single narrow unmarked lane on brick pavers and no median; traffic is very slow amid dense foot activity and a vehicle stopped along the left edge. In the middle of the lane ahead, a pedestrian in a blue dress with a backpack looks at a phone while crossing from left to right, directly across the ego path. Farther ahead, an oncoming light-blue truck approaches in the center of the road and slows, reducing the available space. Along the right edge near the curb, another pedestrian walks toward the camera close to the lane as they pass a crowd at a storefront. A large delivery truck is stopped along the left side, protruding into the lane and further narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a blue dress, carrying a backpack, and looking into their phone, who is in the middle of the road, crossing the street from the left side to the right side. The driver should stop for the pedestrian crossing ahead to avoid a collision with the distracted pedestrian."}
{"id": "train_00112", "split": "train", "clip_key": "2020-0204-103442_008433_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "008433"}, "frames": ["2020-0204-103442_008433_movie_t-3.jpg", "2020-0204-103442_008433_movie_t-2.jpg", "2020-0204-103442_008433_movie_t-1.jpg", "2020-0204-103442_008433_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A dense urban corridor with tall buildings lines a three-lane divided road, the carriageways separated by a right-side barrier; the pavement looks smooth and traffic moves at a moderate, steady pace. Directly ahead in the ego lane, a black SUV drives away from the ego car, gradually increasing the gap and setting the cruising pace. In the adjacent right lane, a dark station wagon runs slightly ahead at similar speed, remaining parallel and not encroaching into the ego lane. Along the left lane near the curb, several small white vans proceed more slowly in a loose line, posing potential lane-speed differences but staying to their side.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00113", "split": "train", "clip_key": "2020-0207-101955_025299_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "025299"}, "frames": ["2020-0207-101955_025299_movie_t-3.jpg", "2020-0207-101955_025299_movie_t-2.jpg", "2020-0207-101955_025299_movie_t-1.jpg", "2020-0207-101955_025299_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A busy urban arterial with multiple lanes and a painted center divider runs straight through a commercial district, the pavement dry as moderate traffic compresses at an intersection. Ahead in the ego lane a green canvas-covered truck slows and stops for a red light, setting the ego vehicle's pace. To the right, a motorcycle filters forward toward the crosswalk and draws alongside the truck at the head of the queue. In the adjacent right lane a white van ahead also decelerates toward the stop line, remaining roughly parallel to the truck. Pedestrians are crossing the roadway in front of the stopped vehicles from both sides. The overhead traffic signal facing the ego direction shows red.", "hazard_reasoning": "There is a green truck slowing in front of the ego car in the ego lane, because the light is red. The green truck is decelerating due to the red light, so the driver must slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_00114", "split": "train", "clip_key": "titan_clip_860_000384_movie", "source": {"subset": "titan", "scenario": "clip_860", "frame": "000384"}, "frames": ["titan_clip_860_000384_movie_t-3.jpg", "titan_clip_860_000384_movie_t-2.jpg", "titan_clip_860_000384_movie_t-1.jpg", "titan_clip_860_000384_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban scene shows a narrow two-way street with a single lane in each direction, no median, and smooth pavement; traffic is light with no moving vehicles nearby. On the left side ahead, a pedestrian wearing a blue shirt walks toward the ego vehicle along the roadside, close to the ego lane and directly in its path. A white van is parked along the left curb near the foreground, slightly constricting the passage. Bicycles and storefronts line the right side, but they remain stationary.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking on the left side of the road, towards the ego car. The driver should slow down to avoid a potential collision as the pedestrian may enter the vehicle's path."}
{"id": "train_00115", "split": "train", "clip_key": "titan_clip_713_000072_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_713_000072_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_713_000072_movie_t-3_augB1.jpg", "titan_clip_713_000072_movie_t-2_augB1.jpg", "titan_clip_713_000072_movie_t-1_augB1.jpg", "titan_clip_713_000072_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing the road", "environment_perception": "An urban side street with roadside railings and a small kiosk comes into view; the narrow carriageway has no marked centerline or median, the pavement is smooth, and traffic is light with no vehicles ahead. Ahead on the right near the kiosk, a pedestrian wearing a white shirt steps out and walks in the middle of the road toward the left side, potentially entering the ego vehicle's path. Another man in a white shirt exits the doorway on the right and pauses at the curb without stepping into the lane. A marked crosswalk lies near the camera position across the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking in the middle of the road, toward the left side. This unexpected presence in the roadway increases collision risk and requires the driver to yield immediately."}
{"id": "train_00116", "split": "train", "clip_key": "2020-0129-144857_030890_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "030890"}, "frames": ["2020-0129-144857_030890_movie_t-3.jpg", "2020-0129-144857_030890_movie_t-2.jpg", "2020-0129-144857_030890_movie_t-1.jpg", "2020-0129-144857_030890_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road runs beneath elevated expressways, with two same-direction lanes, a right-side fork, smooth pavement, and steady moderate flow. Ahead in the ego lane, a black van drives away at a constant speed, keeping a comfortable gap and subtly setting the pace. In the adjacent lane ahead-left, a dark sedan continues straight at similar speed, parallel to the ego path. Oncoming vehicles use the right half of the roadway farther ahead, moving toward the camera but remaining separated. Overhead traffic signals mark an intersection ahead.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00117", "split": "train", "clip_key": "2020-0204-150838_074422_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "074422"}, "frames": ["2020-0204-150838_074422_movie_t-3.jpg", "2020-0204-150838_074422_movie_t-2.jpg", "2020-0204-150838_074422_movie_t-1.jpg", "2020-0204-150838_074422_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with two same-direction lanes runs between a tall noise wall on the left and a concrete barrier on the right; the pavement is dry and smooth, and traffic is light. The roadway is divided, so no oncoming traffic appears, and conditions stay steady along a gentle straight. A black truck with a green tarp is directly ahead in the ego lane, cruising steadily and gradually moving farther away, effectively setting the ego car's pace. The adjacent right lane remains clear with no vehicles merging or encroaching.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00118", "split": "train", "clip_key": "2020-0227-153144_035482_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "035482"}, "frames": ["2020-0227-153144_035482_movie_t-3.jpg", "2020-0227-153144_035482_movie_t-2.jpg", "2020-0227-153144_035482_movie_t-1.jpg", "2020-0227-153144_035482_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with three same-direction lanes runs between tall buildings; the pavement is smooth and traffic is heavy and slow-moving. Ahead in the ego lane a white minivan slows, dictating the ego car's pace. In the left lane a small white van slightly ahead crawls parallel near the curb, limiting room for a lane change. In the right lane a covered light truck with other cars queues closely beside the ego vehicle and advances slowly, keeping to the lane. Pedestrians and a cyclist move along the left sidewalk, remaining off the roadway. Overhead gantry signs span the road.", "hazard_reasoning": "There is a white minivan slowing in the ego lane in front of the ego car. The minivan's deceleration may require the driver to slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_00119", "split": "train", "clip_key": "2020-0226-101332_047324_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "047324"}, "frames": ["2020-0226-101332_047324_movie_t-3.jpg", "2020-0226-101332_047324_movie_t-2.jpg", "2020-0226-101332_047324_movie_t-1.jpg", "2020-0226-101332_047324_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth dry pavement curves right, with temporary barriers forming a divided roadway; traffic is moderate and queued at a signal. A green sedan directly ahead in the ego lane stands still at the stop line because the traffic light ahead shows red, holding the ego car. In the adjacent left lane a large green city bus is stopped slightly ahead, also waiting at the light and partially blocking the forward view. To the right, a white car followed by a red car in the next lane creep toward the intersection along the rightward curve, remaining parallel to the ego lane. The signal ahead displays red for this approach. Construction hoardings and barricades line the right edge, narrowing the shoulder.", "hazard_reasoning": "There is a green sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to maintain a safe following distance and avoid a rear-end collision under the red light."}
{"id": "train_00120", "split": "train", "clip_key": "2020-0203-114632_038916_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "038916"}, "frames": ["2020-0203-114632_038916_movie_t-3.jpg", "2020-0203-114632_038916_movie_t-2.jpg", "2020-0203-114632_038916_movie_t-1.jpg", "2020-0203-114632_038916_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes and a wide painted median has smooth pavement and moderate, steady flow. The ego vehicle travels in the left of the two lanes. Ahead in the ego lane, a silver van continues forward as the vehicle in front moves, loosely setting the ego car's pace. To the right, a white truck in the adjacent same-direction lane moves slightly faster and pulls ahead without merging. On the far side of the median, oncoming cars pass steadily and remain separated. A blue overhead sign with a bus icon indicates a curbside bus-priority lane. A dark van is stopped at the left curb, reducing shoulder clearance but not encroaching into the lane.", "hazard_reasoning": "There is a silver van driving in front of the ego car, in the ego lane, because the vehicle ahead is moving. The driver should follow the vehicle ahead to maintain a safe distance and anticipate sudden braking."}
{"id": "train_00121", "split": "train", "clip_key": "2020-0204-150838_031772_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "031772"}, "frames": ["2020-0204-150838_031772_movie_t-3.jpg", "2020-0204-150838_031772_movie_t-2.jpg", "2020-0204-150838_031772_movie_t-1.jpg", "2020-0204-150838_031772_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial with smooth pavement and double center lines divides opposing flows, and traffic is heavy and largely stopped near an intersection. A white van directly ahead in the ego lane is stopped because of congestion and blocks the path. To the left, a black taxi in the adjacent same-direction lane creeps forward parallel to the ego vehicle, limiting any chance to merge. On the far right at the intersection, numerous pedestrians cross the zebra crossing, and vehicles wait. Overhead traffic signals and directional signs span the roadway, with oncoming lanes visible beyond the center lines.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted van."}
{"id": "train_00122", "split": "train", "clip_key": "titan_clip_1229_000360_movie", "source": {"subset": "titan", "scenario": "clip_1229", "frame": "000360"}, "frames": ["titan_clip_1229_000360_movie_t-3.jpg", "titan_clip_1229_000360_movie_t-2.jpg", "titan_clip_1229_000360_movie_t-1.jpg", "titan_clip_1229_000360_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for pedestrians.", "environment_perception": "An urban street with mid-rise buildings surrounds a narrow two-way road without a marked centerline, the ego vehicle proceeding on the left over worn pavement amid very light traffic and no visible oncoming cars. Two pedestrians wearing white T-shirts walk ahead on the right side of the road, moving away from the ego vehicle and occupying the edge of its lane, so they directly influence its path. A white hatchback is parked along the left curb and intrudes slightly into the roadway, further constricting space. Construction barriers line the left side and a metal railing borders the right, and a blue parking sign is visible on the right.", "hazard_reasoning": "There is two pedestrians wearing white t-shirts and walking on the right side of the road, away from the ego car. These pedestrians could step into the roadway unexpectedly, so the driver should slow down to ensure their safety."}
{"id": "train_00123", "split": "train", "clip_key": "titan_clip_241_000396_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_241_000396_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_241_000396_movie_t-3_augB1.jpg", "titan_clip_241_000396_movie_t-2_augB1.jpg", "titan_clip_241_000396_movie_t-1_augB1.jpg", "titan_clip_241_000396_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial street with a narrow single-lane carriageway on brick paving, no median, has light, slow-moving traffic. A pedestrian in a white shirt carrying a handbag walks ahead slightly right in the roadway away from the ego-vehicle, occupying the lane and constraining the approach. A dark sedan ahead on the right proceeds slowly along the lane near the storefronts and the pedestrian, further limiting the ego-car's pace. A small van is stopped at the right curb near the sedan, narrowing the passage and creating a pinch point. Bicycles are parked along the left curb while other pedestrians stay on the sidewalks.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and walking, on the right side of the road, away from the ego-car. To avoid a potential collision, the driver should manoeuvre around the pedestrian carefully."}
{"id": "train_00124", "split": "train", "clip_key": "titan_clip_482_000246_movie", "source": {"subset": "titan", "scenario": "clip_482", "frame": "000246"}, "frames": ["titan_clip_482_000246_movie_t-3.jpg", "titan_clip_482_000246_movie_t-2.jpg", "titan_clip_482_000246_movie_t-1.jpg", "titan_clip_482_000246_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban street with mid-rise buildings uses interlocking brick pavement and a dashed white center line for a two-way layout, with no median and smooth surface; traffic is very light with no vehicles ahead or oncoming. Two pedestrians are visible ahead on the right sidewalk walking along the curb in the same direction as the ego vehicle, potentially relevant if they step off the sidewalk. Construction cones and equipment line the left shoulder by a building, tightening the margin without blocking the lane. A painted triangular buffer on the right marks a curbside taper amid shopfronts and signage.", "hazard_reasoning": "No hazards detected in the scene. You can proceed as usual."}
{"id": "train_00125", "split": "train", "clip_key": "titan_clip_1058_000084_movie", "source": {"subset": "titan", "scenario": "clip_1058", "frame": "000084"}, "frames": ["titan_clip_1058_000084_movie_t-3.jpg", "titan_clip_1058_000084_movie_t-2.jpg", "titan_clip_1058_000084_movie_t-1.jpg", "titan_clip_1058_000084_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around parked vehicle", "environment_perception": "An urban street with a narrow two-way carriageway, no median, and smooth pavement carries light traffic as the ego vehicle proceeds straight between buildings. A small white van moves ahead in the same direction near the center of the lane, traveling slowly and setting the pace. There is a gray hatchback parked on the left side of the road, and a larger white van stands at the left curb near the ego vehicle, together narrowing the usable lane. On the right sidewalk, a pedestrian walks away beside guardrails and stays clear of the roadway. No traffic signals are visible, and sightlines down the straight corridor remain open.", "hazard_reasoning": "There is a gray hatchback parked on the left side of the road. The driver should carefully manoeuvre around it to maintain safe clearance and avoid collision."}
{"id": "train_00126", "split": "train", "clip_key": "titan_clip_1076_000456_movie", "source": {"subset": "titan", "scenario": "clip_1076", "frame": "000456"}, "frames": ["titan_clip_1076_000456_movie_t-3.jpg", "titan_clip_1076_000456_movie_t-2.jpg", "titan_clip_1076_000456_movie_t-1.jpg", "titan_clip_1076_000456_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cones.", "environment_perception": "A narrow urban street with no centerline curves gently right and slightly uphill between buildings; the pavement looks smooth and traffic is very light. Red traffic cones line the left side of the ego lane ahead, in front of the car, marking a work area that narrows the usable lane. A small group of pedestrians is ahead near the middle of the roadway, walking away in the ego path and constraining the approach. Another pedestrian on the right edge walks toward the camera along the curb, close to the travel lane. Construction materials and a wheelbarrow sit along the left curb beside the cones, further reducing clearance, and no other vehicles or signals are visible.", "hazard_reasoning": "There are red traffic cones on the left side of the ego lane, in front of the ego car. These cones mark a construction zone that reduces the available driving lane and requires careful maneuvering to avoid collisions."}
{"id": "train_00127", "split": "train", "clip_key": "2020-0205-103411_061752_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "061752"}, "frames": ["2020-0205-103411_061752_movie_t-3.jpg", "2020-0205-103411_061752_movie_t-2.jpg", "2020-0205-103411_061752_movie_t-1.jpg", "2020-0205-103411_061752_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs between high-rise buildings, the asphalt smooth and traffic moderate, with a guardrail and grass strip along the right side. Ahead right, a white sedan moves left across the dashed line to merge into the ego lane, taking the open space in front of the ego car. Directly ahead, a small white van in the center lane proceeds straight at a steady pace and loosely governs the flow ahead. Farther left, a dark hatchback continues in its lane without changing speed and stays outside the ego path.", "hazard_reasoning": "There is a white sedan lane changing from the right lane to the ego lane, because there is space in front of the ego car. You should slow down to maintain a safe distance and avoid collision."}
{"id": "train_00128", "split": "train", "clip_key": "2020-0129-105040_034685_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "034685"}, "frames": ["2020-0129-105040_034685_movie_t-3.jpg", "2020-0129-105040_034685_movie_t-2.jpg", "2020-0129-105040_034685_movie_t-1.jpg", "2020-0129-105040_034685_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban intersection under an elevated expressway comes into view on a smooth two-lane road with light traffic. The overhead traffic signal ahead shows red. Two pedestrians are directly ahead crossing from right to left on the zebra crossing, and one of them carries a backpack; they move through the ego lane and dictate the pace. A dark car on the left just beyond the crosswalk is stopped at the corner and remains stationary as the pedestrians pass. On the far right edge, the front of a large vehicle waits at the cross street without advancing.", "hazard_reasoning": "There is a pedestrian carrying a backpack crossing the street from the right side of the pedestrian crossing. The pedestrian could step into the vehicle's path, so the driver should slow down to avoid a collision."}
{"id": "train_00129", "split": "train", "clip_key": "2020-0213-143552_058915_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "058915"}, "frames": ["2020-0213-143552_058915_movie_t-3.jpg", "2020-0213-143552_058915_movie_t-2.jpg", "2020-0213-143552_058915_movie_t-1.jpg", "2020-0213-143552_058915_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial with a raised planted median and smooth pavement carries moderate, steady flow toward a signalized intersection. A white box truck ahead in the ego lane drives away at a constant speed, effectively setting the ego vehicle's pace. A black van in the left adjacent lane travels slightly ahead and parallel, limiting a leftward lane change. On the far side of the median, oncoming cars proceed eastbound and remain separated from the ego's path. The overhead traffic signal ahead shows green.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The vehicle ahead may brake suddenly, so follow the vehicle ahead while maintaining a safe distance."}
{"id": "train_00130", "split": "train", "clip_key": "titan_clip_961_000450_movie", "source": {"subset": "titan", "scenario": "clip_961", "frame": "000450"}, "frames": ["titan_clip_961_000450_movie_t-3.jpg", "titan_clip_961_000450_movie_t-2.jpg", "titan_clip_961_000450_movie_t-1.jpg", "titan_clip_961_000450_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully", "environment_perception": "A narrow urban commercial street with a single lane and brick paving runs between tall buildings, with no divider and light vehicle flow slowed by an obstruction. Ahead in the ego lane, a white truck is parked along the left side with cones as an emergency stop, partially blocking the lane and constraining progress. On the left foreground, a woman steps from the sidewalk into the roadway and walks forward along the truck's side, creating a near-path interaction for the ego vehicle. Farther ahead on the right, pedestrians continue along the storefront sidewalk and one nears the curb but remains outside the lane. A bicycle is parked at the right edge, and cones and bollards line both sides.", "hazard_reasoning": "There is a white truck parked on the left side of the road, in the ego lane, because of emergency. The parked truck partially blocks the driver's forward view and could conceal approaching vehicles or pedestrians, so the driver should manoeuvre carefully around it."}
{"id": "train_00131", "split": "train", "clip_key": "2020-0227-104226_089702_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-104226_089702_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-104226_089702_movie_t-3_augB1.jpg", "2020-0227-104226_089702_movie_t-2_augB1.jpg", "2020-0227-104226_089702_movie_t-1_augB1.jpg", "2020-0227-104226_089702_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial curves gently right and passes beneath an elevated structure; the surface is dry and worn, and traffic is heavy and slow. The ego vehicle follows a red SUV directly ahead in the same lane, which slows because congestion compresses near the underpass and it controls our speed. To the left, a white microvan in the adjacent lane creeps forward alongside, matching the slowdown. Farther ahead in the center of our path, a large box truck approaches the underpass and moves slowly, contributing to the queue. A guardrail borders the right edge while another heavy truck advances in the separated right lane.", "hazard_reasoning": "There is a red SUV slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. This indicates traffic congestion ahead, so slow down to maintain a safe following distance."}
{"id": "train_00132", "split": "train", "clip_key": "titan_clip_933_000552_movie", "source": {"subset": "titan", "scenario": "clip_933", "frame": "000552"}, "frames": ["titan_clip_933_000552_movie_t-3.jpg", "titan_clip_933_000552_movie_t-2.jpg", "titan_clip_933_000552_movie_t-1.jpg", "titan_clip_933_000552_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of the pedestrian", "environment_perception": "An urban commercial street with a single lane in each direction and no median; the ego vehicle proceeds in the left lane on smooth dry pavement as light to moderate same-direction traffic moves slowly ahead. A pedestrian wearing a black dress and carrying an umbrella walks toward the ego car along the left edge of the roadway beside a parked silver van, moving close to the travel line. A white van ahead in the same lane rolls slowly in a short queue, setting the ego vehicle's pace. On the right, a cyclist rides toward the camera along the sidewalk parallel to traffic, remaining separated from the roadway by the curb. Parked vehicles line the left side, locally narrowing the lane.", "hazard_reasoning": "There is a pedestrian wearing a black dress and carrying an umbrella, walking at the left side of the road, toward the ego car. The pedestrian is approaching the vehicle path and may step into the lane unexpectedly, so the driver should be cautious."}
{"id": "train_00133", "split": "train", "clip_key": "titan_clip_1196_000468_movie", "source": {"subset": "titan", "scenario": "clip_1196", "frame": "000468"}, "frames": ["titan_clip_1196_000468_movie_t-3.jpg", "titan_clip_1196_000468_movie_t-2.jpg", "titan_clip_1196_000468_movie_t-1.jpg", "titan_clip_1196_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with brick paving and no marked lanes or divider is crowded with foot traffic, so vehicle flow is very light as the ego car creeps ahead. On the left side ahead, a man wearing a yellow shirt and gray pants holds a coat and walks away from the ego car along the storefronts. In the center of the path, a person pulling a rolling suitcase walks away directly in the vehicle's line, constraining its pace. Farther ahead, several pedestrians drift from right to left near a shop entrance and intermittently occupy the lane. A blue one-way sign above the left sidewalk indicates traffic proceeds forward.", "hazard_reasoning": "There is a man holding a coat, wearing a yellow shirt and gray pants, and walking on the left side of the road and away from the ego car. The pedestrian is walking on the roadway and may step into the lane, so the driver should slow down to maintain safety."}
{"id": "train_00134", "split": "train", "clip_key": "titan_clip_104_000270_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_104_000270_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_104_000270_movie_t-3_augB1.jpg", "titan_clip_104_000270_movie_t-2_augB1.jpg", "titan_clip_104_000270_movie_t-1_augB1.jpg", "titan_clip_104_000270_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around helmeted pedestrian", "environment_perception": "A narrow urban street is channelized into a single forward lane by a construction site along the left behind white hoarding; the pavement looks smooth and traffic is light. Orange cones and tape narrow the roadway near midblock. A helmeted pedestrian worker stands in the middle of the road ahead among the cones because of the construction on the left, guiding passage and constraining the ego vehicle's pace. A silver van is stopped at the right curb just ahead, further tightening the usable lane. Farther ahead on the left, a small work truck waits near the site entrance at low speed.", "hazard_reasoning": "There is a pedestrian wearing a helmet, standing in the middle of the road, because of construction work on the left. The driver should carefully manoeuvre around the pedestrian to avoid a collision due to the narrowed roadway."}
{"id": "train_00135", "split": "train", "clip_key": "titan_clip_974_000186_movie", "source": {"subset": "titan", "scenario": "clip_974", "frame": "000186"}, "frames": ["titan_clip_974_000186_movie_t-3.jpg", "titan_clip_974_000186_movie_t-2.jpg", "titan_clip_974_000186_movie_t-1.jpg", "titan_clip_974_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision", "environment_perception": "In an urban setting, the ego vehicle approaches a narrow two-way street in the left lane at a railway level crossing. The pavement is dry and intact, there is no median, and vehicle traffic is light while pedestrian flow is heavy. Multiple pedestrians walk across the tracks directly ahead, moving both directions and occupying the ego lane, constraining progress. On the left edge of the road, a pedestrian in a gray T-shirt walks toward the ego in the roadway because the sidewalk is crowded, and could stray into the lane. On the right beside the rails, another pedestrian stands near the curb close to the ego path and may step out. The crossing barriers are raised and the signal units show no active lights.", "hazard_reasoning": "There is a pedestrian wearing a gray T-shirt and walking on the left side of the road, towards the ego car, because the sidewalk is filled with people. The pedestrian may step into the vehicle's path, so the driver should slow down to avoid a potential collision."}
{"id": "train_00136", "split": "train", "clip_key": "2020-0205-103411_085425_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-103411_085425_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-103411_085425_movie_t-3_augB1.jpg", "2020-0205-103411_085425_movie_t-2_augB1.jpg", "2020-0205-103411_085425_movie_t-1_augB1.jpg", "2020-0205-103411_085425_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial is shown with three same-direction lanes and opposing lanes to the right, no physical median, and smooth pavement; traffic is moderate to heavy as a queue forms at a signalized intersection ahead. A white sedan directly ahead in the ego lane slows because of congestion, constraining the ego car's pace. In the adjacent lanes, a white minivan and a dump truck slightly to the right also decelerate toward the line of vehicles, remaining ahead of the ego vehicle. On the far right, oncoming cars proceed through their lanes, separated only by markings, and pass the intersection without interacting with the ego lane. An overhead guide sign and a pedestrian overpass span the road as the vehicles approach the light.", "hazard_reasoning": "There is a white sedan slowing down ahead of the ego-car, in the ego lane, because of traffic congestion ahead. You should slow down to adjust speed and maintain a safe distance due to the congestion."}
{"id": "train_00137", "split": "train", "clip_key": "2020-0214-145407_035973_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "035973"}, "frames": ["2020-0214-145407_035973_movie_t-3.jpg", "2020-0214-145407_035973_movie_t-2.jpg", "2020-0214-145407_035973_movie_t-1.jpg", "2020-0214-145407_035973_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene beneath tall buildings and an elevated structure shows a two-lane road with a bollarded shoulder on the right; the pavement looks sound and traffic flows slowly to moderately in the same direction. Ahead in the ego lane, a white box truck drives away from the camera and sets the pace. In the left lane near the curb, several trucks queue and crawl forward, some close to the lane line and potentially edging toward the ego lane. Alongside at the far left edge, a white van moves slowly beside the ego vehicle. A Route 415 marker and a no-parking sign are visible on the left, and a fenced area lines the right.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The white truck ahead could slow down or brake unexpectedly, requiring the driver to maintain a safe following distance and be aware of its movements."}
{"id": "train_00138", "split": "train", "clip_key": "titan_clip_780_000414_movie", "source": {"subset": "titan", "scenario": "clip_780", "frame": "000414"}, "frames": ["titan_clip_780_000414_movie_t-3.jpg", "titan_clip_780_000414_movie_t-2.jpg", "titan_clip_780_000414_movie_t-1.jpg", "titan_clip_780_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian entering roadway", "environment_perception": "A narrow undivided urban street curves gently right; the pavement is smooth and dry, and traffic is light with no oncoming vehicles visible. A small white box truck ahead in the ego lane moves slowly toward the curve, setting the pace. Immediately to the right, a gray flatbed truck stands at the curb while a person works in its bed, occupying part of the lane edge. On the left, a pedestrian wearing a blue skirt walks away from the ego vehicle along the road edge because of the lack of room on the sidewalk, staying close to the travel lane and reducing lateral clearance. Motor scooters and bicycles are parked along the left storefronts, further narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a blue skirt and walking on the left side of the road, away from the ego car, because of the lack of room on the sidewalk. This limited sidewalk space may force the pedestrian into the vehicle's path, so the driver should be aware of potential pedestrian entry onto the road."}
{"id": "train_00139", "split": "train", "clip_key": "titan_clip_17_000426_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_17_000426_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_17_000426_movie_t-3_augB1.jpg", "titan_clip_17_000426_movie_t-2_augB1.jpg", "titan_clip_17_000426_movie_t-1_augB1.jpg", "titan_clip_17_000426_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane each direction runs between trees and office buildings; the pavement is dry and traffic is heavy and slow. A white van directly ahead in the ego lane slows, bunching the queue and constraining the ego car's pace. An oncoming white van approaches in the opposite lane on the right and continues straight past. A black sedan sits at the left curb near the ego vehicle, reducing lateral space as the line creeps forward. A no-parking sign on a pole to the left is clearly visible.", "hazard_reasoning": "There is a white van slowing down in front of the ego car. You should reduce speed to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_00140", "split": "train", "clip_key": "titan_clip_405_000120_movie", "source": {"subset": "titan", "scenario": "clip_405", "frame": "000120"}, "frames": ["titan_clip_405_000120_movie_t-3.jpg", "titan_clip_405_000120_movie_t-2.jpg", "titan_clip_405_000120_movie_t-1.jpg", "titan_clip_405_000120_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban shopping street features a single narrow one-way lane with textured patchy pavement and bollards separating the sidewalks; there are no nearby vehicles, so motor traffic is very light. Ahead on the left, a pedestrian wearing a backpack walks away from the ego car along the lane edge and could enter the path. Near the right foreground, another pedestrian walks toward the camera partly in the roadway, briefly narrowing the lane. Farther ahead, several people cross midblock between the shops, intermittently occupying the lane and constraining progress. A painted forward arrow in the center confirms one-way travel through this tight corridor.", "hazard_reasoning": "There is a pedestrian wearing a backpack and walking on the left side of the road, away from the ego car. Carefully manoeuvre to maintain a safe distance and avoid potential collision."}
{"id": "train_00141", "split": "train", "clip_key": "2020-0205-103411_039742_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "039742"}, "frames": ["2020-0205-103411_039742_movie_t-3.jpg", "2020-0205-103411_039742_movie_t-2.jpg", "2020-0205-103411_039742_movie_t-1.jpg", "2020-0205-103411_039742_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with a fenced median and dry, well-kept pavement shows moderate traffic that is currently queued at an intersection. A black sedan immediately ahead in the ego lane is stopped for a red signal, holding the ego vehicle. Farther ahead in the same lane, a white van also waits at the intersection, extending the queue. In the lane to the left, a dark hatchback creeps forward alongside toward the stop line, limiting a possible lane change. An overhead signal facing the ego direction displays red, while opposing traffic moves on the far side of the median.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid a collision with the stopped vehicle at the red light."}
{"id": "train_00142", "split": "train", "clip_key": "2020-0205-152530_011482_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "011482"}, "frames": ["2020-0205-152530_011482_movie_t-3.jpg", "2020-0205-152530_011482_movie_t-2.jpg", "2020-0205-152530_011482_movie_t-1.jpg", "2020-0205-152530_011482_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and a curbside railing on the left; the dry pavement glints in strong sun glare, and traffic is heavy with a standing queue. A black hatchback directly ahead in the ego lane is stopped for the red light ahead, holding the ego vehicle. In the lane to the right, a light van slightly ahead slows in the queue alongside. Farther right, several cars and vans line up and creep forward, keeping pace with the congestion.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane because of a red traffic light ahead. The driver must stop to avoid colliding with the halted vehicle at the red signal."}
{"id": "train_00143", "split": "train", "clip_key": "titan_clip_1150_000330_movie", "source": {"subset": "titan", "scenario": "clip_1150", "frame": "000330"}, "frames": ["titan_clip_1150_000330_movie_t-3.jpg", "titan_clip_1150_000330_movie_t-2.jpg", "titan_clip_1150_000330_movie_t-1.jpg", "titan_clip_1150_000330_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A narrow urban residential two-way street with no median runs between closely spaced buildings; the pavement is intact and traffic is light with no moving cars visible. Ahead in the center of the lane, a cyclist wearing a blue shirt is stopped in the middle of the road, temporarily blocking the ego vehicle's path. On the left at a parking lot exit, a white van waits partly in the roadway and could move into the ego lane. Beside that exit, a man stands at the curb near the lane, lingering close to the vehicle's path.", "hazard_reasoning": "There is a cyclist wearing a blue shirt, stopped in the middle of the road. The cyclist's stopped position blocks part of the lane and poses a collision risk, so the driver should carefully manoeuvre around it."}
{"id": "train_00144", "split": "train", "clip_key": "titan_clip_888_000516_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_888_000516_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_888_000516_movie_t-3_augB1.jpg", "titan_clip_888_000516_movie_t-2_augB1.jpg", "titan_clip_888_000516_movie_t-1_augB1.jpg", "titan_clip_888_000516_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban backstreet with a single narrow lane and no center line runs between shopfronts; the pavement is smooth and slightly cluttered at the edges, and motor traffic is light. A pedestrian in a white shirt carrying a backpack walks in the middle of the road ahead, moving away from the ego vehicle because shop displays and scaffolding on the right block the margin, so the pedestrian remains in our path and dictates a slow approach. Another pedestrian ahead to the left walks in the same direction near the storefronts and could edge into the lane. Farther ahead, a person continues along the lane, also aligned with our path. Numerous signboards encroach from the right, forming obstacles.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, and walking in the middle of the road, away from the ego-car, because of obstacles on the right side. The driver should yield because the pedestrian occupies the lane and may cross unpredictably."}
{"id": "train_00145", "split": "train", "clip_key": "2020-0226-140503_036766_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "036766"}, "frames": ["2020-0226-140503_036766_movie_t-3.jpg", "2020-0226-140503_036766_movie_t-2.jpg", "2020-0226-140503_036766_movie_t-1.jpg", "2020-0226-140503_036766_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with three same-direction lanes curves slightly right; the pavement is smooth and dry, with curbside barriers and a small planting strip, and traffic grows denser near a signalized intersection. A black van ahead in the leftmost ego lane slows at the red light while preparing a left turn, briefly constraining our pace. In the adjacent lane to the right, a white car continues straight toward the junction at a steady speed and remains clear of our path. Farther right, a large dark truck proceeds with the flow in the outer lane and stays separated from the ego lane. On the left sidewalk, a pedestrian walks away from the camera parallel to the road. Bags of trash rest behind a small curb barrier and do not intrude into the roadway.", "hazard_reasoning": "There is a black van slowing down in the ego lane because of a red traffic light and because it is turning left. The van's deceleration indicates a risk of sudden slowing or stopping ahead, so the driver should reduce speed to maintain a safe following distance."}
{"id": "train_00146", "split": "train", "clip_key": "2020-0225-102455_012254_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "012254"}, "frames": ["2020-0225-102455_012254_movie_t-3.jpg", "2020-0225-102455_012254_movie_t-2.jpg", "2020-0225-102455_012254_movie_t-1.jpg", "2020-0225-102455_012254_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban street with one through lane in the ego direction and a pink side lane runs beside a parallel same-direction carriageway behind a guardrail; the pavement is dry and traffic is queued ahead. A black dump truck directly ahead in the ego lane is stopped because of congestion further up the road, holding the ego vehicle in place. On the adjacent roadway to the right beyond the barrier, several cars move slowly in the same direction and remain separate from the ego lane. No salient signals are in view, and there are no pedestrians or additional obstacles entering the lane.", "hazard_reasoning": "There is a black truck stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop immediately to avoid colliding with the halted vehicle."}
{"id": "train_00147", "split": "train", "clip_key": "titan_clip_417_000042_movie", "source": {"subset": "titan", "scenario": "clip_417", "frame": "000042"}, "frames": ["titan_clip_417_000042_movie_t-3.jpg", "titan_clip_417_000042_movie_t-2.jpg", "titan_clip_417_000042_movie_t-1.jpg", "titan_clip_417_000042_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian.", "environment_perception": "A narrow urban street with block paving and no center line runs between storefronts on the left and trees with bollards on the right; traffic is light and slow. A black sedan ahead in the ego lane moves gently forward near mid-block and limits the ego vehicle's pace. Along the left edge by the shops, several pedestrians occupy the roadway; a pedestrian wearing a cap and a white shirt walks away from the ego car along the curb where there is no sidewalk, staying very close to the travel lane. Additional pedestrians linger by the storefronts on the left, keeping to the edge. No signals or posted speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a cap and a white shirt walking away from the ego car on the left side of the road because there is no sidewalk. The driver should yield to avoid striking the pedestrian who is unprotected at the roadside."}
{"id": "train_00148", "split": "train", "clip_key": "titan_clip_803_000570_movie", "source": {"subset": "titan", "scenario": "clip_803", "frame": "000570"}, "frames": ["titan_clip_803_000570_movie_t-3.jpg", "titan_clip_803_000570_movie_t-2.jpg", "titan_clip_803_000570_movie_t-1.jpg", "titan_clip_803_000570_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre around the parked motorcycle carefully.", "environment_perception": "An urban two-way street with a single central line and worn pavement runs between close buildings under hazy glare, and traffic flow is light. An oncoming cyclist near the left edge approaches toward the camera along the opposing side and passes close to the ego vehicle's path. Another cyclist ahead near the centerline rides away in the same direction at low speed, setting the pace for the ego vehicle. A brown motorcycle is parked on the right side just ahead, as noted, and it, along with another scooter nearby, narrows the usable lane.", "hazard_reasoning": "There is a brown motorcycle parked on the right side of the road in front of the ego-car. The parked motorcycle narrows the driving lane and may force the driver to deviate from their path, requiring careful manoeuvring to avoid collision."}
{"id": "train_00149", "split": "train", "clip_key": "titan_clip_119_000126_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_119_000126_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_119_000126_movie_t-3_augB1.jpg", "titan_clip_119_000126_movie_t-2_augB1.jpg", "titan_clip_119_000126_movie_t-1_augB1.jpg", "titan_clip_119_000126_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian pushing cart ahead", "environment_perception": "A narrow urban street between mid-rise buildings has a single lane in the ego direction, no median, and smooth pavement; traffic is light and no oncoming vehicles are visible. Ahead on the left side within the ego lane, a pedestrian wearing a cap, black T-shirt, and beige pants pushes a cart and walks away from the car, occupying part of the lane and constraining the available path. Farther ahead, a white van proceeds in the same direction down the center of the lane and continues away. On the right, pedestrians move along the storefront sidewalk and remain off the roadway. Parked bicycles line both curbs, narrowing the margins.", "hazard_reasoning": "A pedestrian, wearing a cap, black t-shirt, and beige pants, is pushing a cart and walking on the left side of the road in the ego lane, away from the ego car. The driver should be aware of this pedestrian moving in their lane, as they may alter their path or slow unexpectedly."}
{"id": "train_00150", "split": "train", "clip_key": "titan_clip_642_000330_movie", "source": {"subset": "titan", "scenario": "clip_642", "frame": "000330"}, "frames": ["titan_clip_642_000330_movie_t-3.jpg", "titan_clip_642_000330_movie_t-2.jpg", "titan_clip_642_000330_movie_t-1.jpg", "titan_clip_642_000330_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the parked semitruck", "environment_perception": "An urban narrow two-way street with no median is filmed at a low speed; the asphalt is smooth but the lane is partially obstructed, and traffic is light. A gray semitruck is parked along the right curb with its cargo area open as it is being unloaded, narrowing the ego lane and requiring slow passage. Another large truck is stopped on the left curb with its rear doors open, further squeezing the corridor for through traffic. A cyclist ahead rides slowly toward the ego vehicle from the intersecting street, threading between the trucks and potentially entering the ego path. Two workers stand and move beside the trucks while handling carts and goods close to the roadway, creating side hazards near the vehicle's path. A large stop marking is painted on the pavement at the upcoming cross street.", "hazard_reasoning": "There is a gray semitruck parked on the right side of the road because it is being unloaded. The parked semitruck obstructs part of the roadway, reducing sight-lines and narrowing the driving path, so the driver must carefully manoeuvre around it to avoid a collision."}
{"id": "train_00151", "split": "train", "clip_key": "titan_clip_968_000102_movie", "source": {"subset": "titan", "scenario": "clip_968", "frame": "000102"}, "frames": ["titan_clip_968_000102_movie_t-3.jpg", "titan_clip_968_000102_movie_t-2.jpg", "titan_clip_968_000102_movie_t-1.jpg", "titan_clip_968_000102_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban two-way street with a single lane in each direction and no median extends ahead; the pavement looks smooth and traffic is light with no moving vehicles nearby. A white truck stands ahead on the right edge, parked in the ego lane because of construction, encroaching into the travel path and constraining the available width. No oncoming vehicles are visible. An excavator, soil pile, and orange cones occupy the right shoulder as part of the work zone, further narrowing the roadway.", "hazard_reasoning": "There is a white truck parked on the right side of the road, in the ego lane, because of construction work ahead. The parked truck partially blocks the lane and reduces forward visibility, so the driver needs to manoeuvre carefully to avoid colliding with it."}
{"id": "train_00152", "split": "train", "clip_key": "titan_clip_337_000426_movie", "source": {"subset": "titan", "scenario": "clip_337", "frame": "000426"}, "frames": ["titan_clip_337_000426_movie_t-3.jpg", "titan_clip_337_000426_movie_t-2.jpg", "titan_clip_337_000426_movie_t-1.jpg", "titan_clip_337_000426_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrians in the road", "environment_perception": "A narrow urban commercial street with interlocking pavers has no centerline and functions as a single mixed-traffic lane; overall flow is light and slow. Two pedestrians ahead in the middle of the roadway, one in a white shirt with black pants pushing a suitcase and the other in a cap and gray T-shirt, walk toward the ego car and occupy its path, constraining progress. Farther ahead in the same lane, a small white truck moves away at low speed, loosely pacing traffic. A white van is parked along the left edge near the ego vehicle, narrowing the usable lane.", "hazard_reasoning": "There are two pedestrians, one wearing a white shirt, black pants, and pushing a suitcase, the other wearing a cap and a gray t-shirt, walking in the middle of the road toward the ego car. They occupy the travel lane and may unexpectedly cross paths with the vehicle, so the driver should yield to avoid a collision."}
{"id": "train_00153", "split": "train", "clip_key": "2020-0210-155354_034728_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "034728"}, "frames": ["2020-0210-155354_034728_movie_t-3.jpg", "2020-0210-155354_034728_movie_t-2.jpg", "2020-0210-155354_034728_movie_t-1.jpg", "2020-0210-155354_034728_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and smooth pavement carries heavy traffic queuing toward an intersection, with flow mostly stopped. A black hatchback directly ahead in the ego lane is stopped because the traffic signal ahead is red, holding the ego vehicle. In the left lane, a white van slightly ahead waits in the queue and matches the halt. In the right lane, a black sedan a little farther ahead slows to a stop in its lane, remaining parallel to the ego car. The red signal at the distant intersection governs the scene and explains the standstill.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. You need to stop to avoid colliding with the halted vehicle at the intersection."}
{"id": "train_00154", "split": "train", "clip_key": "2020-0127-132751_065844_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "065844"}, "frames": ["2020-0127-132751_065844_movie_t-3.jpg", "2020-0127-132751_065844_movie_t-2.jpg", "2020-0127-132751_065844_movie_t-1.jpg", "2020-0127-132751_065844_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban street in Japan with two same-direction lanes and no median runs straight on smooth pavement; the adjacent right lane is congested while the left lane flows more freely. Traffic overall is moderate with heavy queueing beside the ego vehicle. Ahead in the ego lane, a silver SUV slows and turns left into a side street, briefly setting the pace. In the right lane, a white van and several large trucks are queued and creep forward, remaining parallel to the ego lane. At the far left near the curb, a cyclist moves slowly along the sidewalk by the railings without entering the roadway. A blue no-parking sign is posted on the left, and a painted bus or taxi bay diverges to the right near the crosswalk.", "hazard_reasoning": "There is a silver SUV turning left onto an adjacent street, in the ego lane. The SUV's left turn cuts into the ego lane and may intersect your path, so slow down to maintain a safe distance."}
{"id": "train_00155", "split": "train", "clip_key": "2020-0228-102841_050687_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "050687"}, "frames": ["2020-0228-102841_050687_movie_t-3.jpg", "2020-0228-102841_050687_movie_t-2.jpg", "2020-0228-102841_050687_movie_t-1.jpg", "2020-0228-102841_050687_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with curbside parking is dry and in good condition, with no median visible; same-direction traffic is heavy and slow in a short queue. A white van directly ahead in the ego lane is stopped because congestion in front blocks it, holding the ego car's pace. To the right, a large box truck in the adjacent lane is also stopped or creeping alongside, limiting space for a rightward merge. Parked cars line the left curb near the ego vehicle, narrowing the usable lane and reducing lateral clearance. Distant vehicles ahead remain bunched, keeping the flow sluggish.", "hazard_reasoning": "There is a white van stopped in the ego car lane because of traffic congestion ahead. The stopped van blocks the lane and requires you to stop to avoid a collision."}
{"id": "train_00156", "split": "train", "clip_key": "2020-0129-144857_040767_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "040767"}, "frames": ["2020-0129-144857_040767_movie_t-3.jpg", "2020-0129-144857_040767_movie_t-2.jpg", "2020-0129-144857_040767_movie_t-1.jpg", "2020-0129-144857_040767_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs under an elevated structure, with two same-direction lanes and a guardrail and fence on the right; the pavement is dry and traffic is heavy and crawling in a queue. A black van is stopped directly ahead in the ego lane because of congestion, holding the ego car. Farther ahead in the same lane, a large box truck waits in the line, further limiting movement. In the adjacent left lane, a white hatchback slightly ahead creeps forward alongside the queue. Near the ego car's left, a white microvan moves slowly past in the neighboring lane.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision and maintain a safe following distance under these conditions."}
{"id": "train_00157", "split": "train", "clip_key": "titan_clip_92_000546_movie", "source": {"subset": "titan", "scenario": "clip_92", "frame": "000546"}, "frames": ["titan_clip_92_000546_movie_t-3.jpg", "titan_clip_92_000546_movie_t-2.jpg", "titan_clip_92_000546_movie_t-1.jpg", "titan_clip_92_000546_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with one undivided shared lane and block-paved surface runs between buildings, edged by orange cones; traffic is light and moves slowly. A small blue delivery truck travels ahead in the ego lane at low speed, constraining the pace as it proceeds along the center of the street. A cyclist wearing a black jacket and black pants rides in the middle of the road toward the ego vehicle, forming oncoming traffic that may pass close. Two pedestrians on the right walk diagonally into the roadway near the shops, potentially crossing the ego path. Cones and tight clearances create a mildly constrained corridor.", "hazard_reasoning": "There is a cyclist wearing a black jacket and black pants, cycling in the middle of the road, toward the ego car. The driver should slow down to avoid a potential collision with the cyclist who is directly ahead in the travel path."}
{"id": "train_00158", "split": "train", "clip_key": "titan_clip_462_000462_movie", "source": {"subset": "titan", "scenario": "clip_462", "frame": "000462"}, "frames": ["titan_clip_462_000462_movie_t-3.jpg", "titan_clip_462_000462_movie_t-2.jpg", "titan_clip_462_000462_movie_t-1.jpg", "titan_clip_462_000462_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "A narrow urban two-way street with buildings tight to the curb has dry, slightly worn pavement and very light vehicle traffic; there is no centerline. On the right edge ahead, two pedestrians, one in a yellow shirt and one in black pants, walk toward the ego along the white edge line beside a truck and are close to the travel lane. Farther ahead near the middle of the roadway, another pedestrian walks away from the ego, potentially constraining speed. On the left side, a person with an umbrella stands at the curb by a bicycle, near the lane. A large CNG delivery truck is parked on the right, partially narrowing the roadway and creating a pinch point.", "hazard_reasoning": "There are two pedestrians, one wearing black pants and one wearing a yellow shirt, walking on the right side of the road toward the ego car. The parked truck obstructs your view of their movement onto the roadway, so you must manoeuvre carefully to avoid colliding with them."}
{"id": "train_00159", "split": "train", "clip_key": "2020-0205-103411_113514_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "113514"}, "frames": ["2020-0205-103411_113514_movie_t-3.jpg", "2020-0205-103411_113514_movie_t-2.jpg", "2020-0205-103411_113514_movie_t-1.jpg", "2020-0205-103411_113514_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial with no median and dry pavement approaches a signalized intersection, and traffic is light to moderate with steady flow. A white van ahead in the ego lane pulls away as traffic ahead moves, gradually increasing its distance from the ego car. On the right side, an oncoming white van proceeds straight through the intersection toward the camera, staying in its lane and not affecting the ego path. Far ahead, a few same-direction vehicles flow through the junction at a steady pace. A small truck stands at the left curb beyond the crosswalk outside the travel lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00160", "split": "train", "clip_key": "titan_clip_415_000282_movie", "source": {"subset": "titan", "scenario": "clip_415", "frame": "000282"}, "frames": ["titan_clip_415_000282_movie_t-3.jpg", "titan_clip_415_000282_movie_t-2.jpg", "titan_clip_415_000282_movie_t-1.jpg", "titan_clip_415_000282_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "A narrow urban back street with a single shared lane and no centerline runs between shopfronts; the stone-paved surface looks smooth and traffic is very light with no vehicles. Ahead, a pedestrian in a white T-shirt walks in the middle of the road toward the ego-vehicle, directly in its path and constraining its approach. A couple of other pedestrians stay by the storefronts at the sides and do not enter the roadway. No traffic signals or posted speeds are visible, and planters and steps line the right edge but remain outside the travel way.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and walking in the middle of the road, towards the ego car. They are directly in the vehicle's path and may continue forward, so you should be aware to avoid a potential collision."}
{"id": "train_00161", "split": "train", "clip_key": "titan_clip_66_000480_movie", "source": {"subset": "titan", "scenario": "clip_66", "frame": "000480"}, "frames": ["titan_clip_66_000480_movie_t-3.jpg", "titan_clip_66_000480_movie_t-2.jpg", "titan_clip_66_000480_movie_t-1.jpg", "titan_clip_66_000480_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "An urban, single-lane-each-way street with no centerline and smooth pavement approaches a small unsignalized intersection; traffic is light. A white van is stopped along the left curb ahead with its rear doors open being unloaded, protruding slightly into the ego lane and constraining the path. On the right sidewalk near the intersection, a pedestrian walks toward the crosswalk and may step into the road ahead. At the intersection, a small white car moves across from left to right on the cross street, briefly occupying the area ahead but not the ego lane. A bicycle is parked at the right curb while workers remain by the doorway on the left.", "hazard_reasoning": "There is a white van parked on the left side of the road, because it is being unloaded. The van partially blocks the lane and limits visibility, so the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_00162", "split": "train", "clip_key": "2020-0225-102455_032421_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "032421"}, "frames": ["2020-0225-102455_032421_movie_t-3.jpg", "2020-0225-102455_032421_movie_t-2.jpg", "2020-0225-102455_032421_movie_t-1.jpg", "2020-0225-102455_032421_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of potential cut-in", "environment_perception": "An urban multi-lane arterial with smooth asphalt and a painted chevron divider to the right carries moderate, steady same-direction traffic. A black boxy minivan is directly ahead in the ego lane, cruising at a steady pace and effectively setting the ego-car's speed. To the right, a dark minivan moves slightly faster in the neighboring lane while maintaining its lane. Farther right, a large bus proceeds straight in the outer lane and stays clear of the ego path. On the left near the ego vehicle, a white sedan advances in the adjacent lane and continues forward alongside without entering the ego lane.", "hazard_reasoning": "There is a white sedan changing lanes, from the left lane, to the ego lane, in front of the ego-car. Drivers should be aware because the vehicle's unexpected lane change can reduce reaction time."}
{"id": "train_00163", "split": "train", "clip_key": "2020-0207-151349_075096_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "075096"}, "frames": ["2020-0207-151349_075096_movie_t-3.jpg", "2020-0207-151349_075096_movie_t-2.jpg", "2020-0207-151349_075096_movie_t-1.jpg", "2020-0207-151349_075096_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway has two same-direction lanes, with a guardrail on the right separating a parallel roadway carrying oncoming traffic; the pavement is dry and traffic is moderate, slowing ahead. A brown truck directly ahead in the ego lane decelerates because of congestion in front, constraining the ego car's speed. To the left of the truck, a dark sedan in the adjacent lane moves slightly faster and passes forward, remaining in its lane. Farther ahead in the left lane, a small white van continues slowly with the queue. Large groups of pedestrians line the left sidewalk behind railings, walking along the street while staying clear of the roadway.", "hazard_reasoning": "There is a brown truck slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced traffic flow ahead."}
{"id": "train_00164", "split": "train", "clip_key": "2020-0203-114632_093818_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "093818"}, "frames": ["2020-0203-114632_093818_movie_t-3.jpg", "2020-0203-114632_093818_movie_t-2.jpg", "2020-0203-114632_093818_movie_t-1.jpg", "2020-0203-114632_093818_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road runs beneath an elevated structure with a metal fence along the right edge and smooth pavement; traffic is light and steady. A white van ahead in the ego lane drives away, keeping a straight course. A blue refuse truck slightly farther ahead to the left travels in the adjacent same-direction lane at a similar pace, narrowing space for lane changes. Farther ahead a few vehicles continue the same way toward distant traffic signals. No pedestrians, cyclists, or obstacles are visible on the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00165", "split": "train", "clip_key": "titan_clip_1144_000426_movie", "source": {"subset": "titan", "scenario": "clip_1144", "frame": "000426"}, "frames": ["titan_clip_1144_000426_movie_t-3.jpg", "titan_clip_1144_000426_movie_t-2.jpg", "titan_clip_1144_000426_movie_t-1.jpg", "titan_clip_1144_000426_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban backstreet with a single narrow lane and no divider runs between close buildings; the dry pavement is intact and traffic is light with no vehicles ahead. On the right edge near the ego-vehicle, a pedestrian wearing a cap and a striped shirt walks toward the car along the wall and may step into the lane, so the pedestrian is the main constraint. Parked bicycles and a small stand line the right side and intrude slightly into the roadway, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a cap and a striped shirt, and walking, on the right side of the road, towards the ego-car. The pedestrian is entering the vehicle's path, so the driver should manoeuvre carefully around the pedestrian to avoid a collision."}
{"id": "train_00166", "split": "train", "clip_key": "titan_clip_935_000486_movie", "source": {"subset": "titan", "scenario": "clip_935", "frame": "000486"}, "frames": ["titan_clip_935_000486_movie_t-3.jpg", "titan_clip_935_000486_movie_t-2.jpg", "titan_clip_935_000486_movie_t-1.jpg", "titan_clip_935_000486_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around pedestrians", "environment_perception": "A narrow urban two-way street without sidewalks runs between low buildings; the pavement is dry and traffic is light as the road bends slightly right ahead. On the left edge near the ego vehicle, two pedestrians in white tops-one in blue pants and one in a blue skirt-walk away along the curb because there is no sidewalk, occupying part of the lane. Ahead in the center, an oncoming cyclist rides toward the camera, narrowing clearance with the ego path. On the right, a white minivan is stopped facing the ego car, protruding into the lane and constricting the passage.", "hazard_reasoning": "There are two pedestrians wearing white shirts, blue pants, and a blue skirt, walking away from the ego car on the left side of the road, because there is no sidewalk. The driver should manoeuvre around them to maintain safe clearance and avoid a collision."}
{"id": "train_00167", "split": "train", "clip_key": "titan_clip_814_000282_movie", "source": {"subset": "titan", "scenario": "clip_814", "frame": "000282"}, "frames": ["titan_clip_814_000282_movie_t-3.jpg", "titan_clip_814_000282_movie_t-2.jpg", "titan_clip_814_000282_movie_t-1.jpg", "titan_clip_814_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "A narrow urban two-way street without a center divider runs through a busy shopping area; the pavement looks smooth and traffic is light with no moving vehicles visible. On the left near the ego vehicle, a pedestrian wearing a black shirt walks away along the road edge, close to the travel path and may enter the ego lane. Ahead near mid-block, another pedestrian crosses from left to right across the street, momentarily occupying the ego lane and constraining speed. Farther ahead along the right edge, a person walks away in the same direction while keeping to the curb. Bicycles parked along the right curb and several traffic cones slightly narrow the usable space near storefronts.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, walking on the left side of the road, away from the ego car. The pedestrian could veer into the vehicle's path unpredictably, so the driver should be cautious of the pedestrian ahead."}
{"id": "train_00168", "split": "train", "clip_key": "2020-0225-102455_042774_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "042774"}, "frames": ["2020-0225-102455_042774_movie_t-3.jpg", "2020-0225-102455_042774_movie_t-2.jpg", "2020-0225-102455_042774_movie_t-1.jpg", "2020-0225-102455_042774_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with two lanes in the ego direction runs alongside a raised median; the pavement is dry and smooth, and traffic is moderate and slow near the intersection ahead. A black van ahead left cuts from the left lane into the ego lane directly in front of the ego vehicle, merging into the gap and taking the lead. Farther ahead, a white box truck near the median continues straight at low speed, constraining the pace of vehicles behind it. On the other side of the median, oncoming cars travel steadily through the corridor.", "hazard_reasoning": "There is a black van cutting in front of the ego car, from the left lane to the ego lane. This maneuver reduces the gap and may require the ego-vehicle to brake; slow down to maintain a safe following distance."}
{"id": "train_00169", "split": "train", "clip_key": "2020-0212-102546_090452_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "090452"}, "frames": ["2020-0212-102546_090452_movie_t-3.jpg", "2020-0212-102546_090452_movie_t-2.jpg", "2020-0212-102546_090452_movie_t-1.jpg", "2020-0212-102546_090452_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two same-direction lanes runs alongside a tall sound barrier on the left, the pavement dry and smooth, and overall traffic is moderate with a brief hold in the left lane. A white van directly ahead in the ego lane is stopped because of traffic congestion ahead, temporarily holding the ego vehicle. A motorcycle slightly ahead in the adjacent right lane continues forward and overtakes, unaffected by the stoppage. Across short posts to the right, opposing traffic moves steadily and remains separate.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of traffic congestion ahead. Since the van has halted due to congestion, the driver should stop to avoid a rear-end collision and maintain safe spacing."}
{"id": "train_00170", "split": "train", "clip_key": "2020-0206-142535_044741_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "044741"}, "frames": ["2020-0206-142535_044741_movie_t-3.jpg", "2020-0206-142535_044741_movie_t-2.jpg", "2020-0206-142535_044741_movie_t-1.jpg", "2020-0206-142535_044741_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with stopped car", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy, stop-and-go flow, with lanes separated by white lines and no physical median visible. Ahead in the ego lane, a gray hatchback is stopped because of congestion, keeping the ego car stationary. In the adjacent right lane, a line of cars inches forward parallel to the ego lane under the same queue, limiting progress. Farther ahead, additional vehicles are stacked across the lanes toward the junction. Pedestrians on the left sidewalk walk past storefronts and wait near the curb but stay off the roadway.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid a collision with the stationary vehicle ahead."}
{"id": "train_00171", "split": "train", "clip_key": "titan_clip_388_000216_movie", "source": {"subset": "titan", "scenario": "clip_388", "frame": "000216"}, "frames": ["titan_clip_388_000216_movie_t-3.jpg", "titan_clip_388_000216_movie_t-2.jpg", "titan_clip_388_000216_movie_t-1.jpg", "titan_clip_388_000216_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian pushing a cart.", "environment_perception": "A narrow urban shopping street with a single shared lane is paved with interlocking bricks, has no divider, and traffic is light as storefronts line both sides. The flow is slow because the roadway is constricted by parked vehicles. A small white truck is ahead in the same lane, moving slowly away and setting the pace. On the left near the camera, a silver van is stopped partly in the lane at the curb, narrowing the passage. On the right edge, a pedestrian pushing a cart walks toward the ego car along the curb, close to the travel lane and may enter it.", "hazard_reasoning": "There is a pedestrian pushing a cart and walking on the right side of the road, toward the ego car. This pedestrian may step off the sidewalk into the lane unexpectedly because of the cart's position, so the driver should remain vigilant.\\n"}
{"id": "train_00172", "split": "train", "clip_key": "2020-0214-145407_000487_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "000487"}, "frames": ["2020-0214-145407_000487_movie_t-3.jpg", "2020-0214-145407_000487_movie_t-2.jpg", "2020-0214-145407_000487_movie_t-1.jpg", "2020-0214-145407_000487_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for the pedestrian crossing.", "environment_perception": "An urban multi-lane intersection beneath an elevated expressway is viewed from a stopped car at the stop line; the pavement is dry and worn, and traffic is light. A red traffic signal holds the ego vehicle while crosswalk users pass. On the right-side crosswalk ahead, a pedestrian wearing black pants and a hat walks across toward the right, taking advantage of the red light. From the near left corner, a cyclist rolls into the same crosswalk ahead of the ego path and continues across, occupying the area in front. Beside the cyclist, two pedestrians at the left curb step onto the crosswalk, keeping the ego paused. A few vehicles wait on the far side without interfering with the crossing.", "hazard_reasoning": "There is a pedestrian wearing black pants and a hat, crossing at the pedestrian crosswalk to the right side of the road, because of the red light. The driver should stop to yield to the crossing pedestrian and avoid a collision."}
{"id": "train_00173", "split": "train", "clip_key": "2020-0204-150838_077562_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "077562"}, "frames": ["2020-0204-150838_077562_movie_t-3.jpg", "2020-0204-150838_077562_movie_t-2.jpg", "2020-0204-150838_077562_movie_t-1.jpg", "2020-0204-150838_077562_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multi-lane divided road runs under an elevated structure, with three same-direction lanes and dry, intact pavement; traffic is heavy and mostly stopped in a queue. A white box truck directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. In the left lane, a silver box truck waits alongside near the ego car, limiting a merge to the left. In the right lane, a small flatbed truck just ahead is also stopped or creeping, constraining any move to the right.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid rear-ending the stopped vehicle."}
{"id": "train_00174", "split": "train", "clip_key": "titan_clip_1027_000408_movie", "source": {"subset": "titan", "scenario": "clip_1027", "frame": "000408"}, "frames": ["titan_clip_1027_000408_movie_t-3.jpg", "titan_clip_1027_000408_movie_t-2.jpg", "titan_clip_1027_000408_movie_t-1.jpg", "titan_clip_1027_000408_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "A narrow two-way urban street without a centerline runs between close-set buildings, the dry pavement slightly worn and traffic light. A white van is parked on the left side of the road near the ego vehicle, occupying part of the lane and narrowing the passing space. Farther ahead in the same direction, another small white van continues along the lane at low speed, setting the pace for the ego vehicle. No oncoming vehicles or pedestrians are visible, and there are no traffic signals in view.", "hazard_reasoning": "There is a white van parked on the left side of the road. The vehicle encroaches into the lane, reducing clearance and requiring the driver to adjust their path to avoid collision."}
{"id": "train_00175", "split": "train", "clip_key": "2020-0207-101955_085971_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "085971"}, "frames": ["2020-0207-101955_085971_movie_t-3.jpg", "2020-0207-101955_085971_movie_t-2.jpg", "2020-0207-101955_085971_movie_t-1.jpg", "2020-0207-101955_085971_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the lane-changing truck", "environment_perception": "An urban expressway with two same-direction lanes curves right beneath an overpass, enclosed by high sound walls; the dry pavement looks smooth and traffic is light. Just ahead, a blue truck in the ego lane moves left into the adjacent lane in front of the ego vehicle and momentarily sets the pace. Farther ahead in the left lane, a crane-equipped flatbed truck continues steadily in the same direction without changing lanes. Ahead in the right lane, a small white truck proceeds at a stable gap from the ego car. Flexible posts delineate a striped buffer along the left side, and the right shoulder is narrow.", "hazard_reasoning": "There is a blue truck lane changing in front of the ego car, from the ego lane to the left lane. The driver should be aware because the truck's lane change may intersect with the ego-vehicle's path, requiring timely adjustments."}
{"id": "train_00176", "split": "train", "clip_key": "2020-0217-144444_012189_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "012189"}, "frames": ["2020-0217-144444_012189_movie_t-3.jpg", "2020-0217-144444_012189_movie_t-2.jpg", "2020-0217-144444_012189_movie_t-1.jpg", "2020-0217-144444_012189_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban scene shows a single-lane left-hand road curving right, with smooth pavement, a low hedge median on the right, and shops and a fenced sidewalk on the left; traffic is light with only a few vehicles ahead. A small white car ahead in the ego lane proceeds slowly toward the bend, slightly setting the ego vehicle's pace. A pedestrian wearing purple pants stands on the left side by the railing outside the shops, waiting on the sidewalk and not entering the lane. Farther ahead, a few more same-direction cars cluster near a junction beyond the curve and continue steadily.", "hazard_reasoning": "There is a pedestrian wearing purple pants, standing on the left side of the road. Because the pedestrian is close to the travel lane and may step into traffic unexpectedly, you should manoeuvre carefully around them to avoid collision."}
{"id": "train_00177", "split": "train", "clip_key": "titan_clip_1268_000270_movie", "source": {"subset": "titan", "scenario": "clip_1268", "frame": "000270"}, "frames": ["titan_clip_1268_000270_movie_t-3.jpg", "titan_clip_1268_000270_movie_t-2.jpg", "titan_clip_1268_000270_movie_t-1.jpg", "titan_clip_1268_000270_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist ahead", "environment_perception": "A narrow urban side street with closely spaced buildings forms an undivided two-way road with smooth pavement and light traffic, and no oncoming vehicles appear. A cyclist dressed in all black rides ahead near the center of the lane, moving away from the camera and constraining the ego vehicle's pace. Farther ahead on the right, a pedestrian walks away along the edge of the roadway near a driveway. A white box truck is parked on the right near cones and a signboard, narrowing the usable lane, while a car sits parked off the roadway on the left.", "hazard_reasoning": "There is a cyclist dressed in all black, cycling in the middle of the lane, away from the ego car. The cyclist's central position reduces available space and may require driver awareness to prevent a collision, so be aware of the cyclist ahead."}
{"id": "train_00178", "split": "train", "clip_key": "2020-0218-103119_024515_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "024515"}, "frames": ["2020-0218-103119_024515_movie_t-3.jpg", "2020-0218-103119_024515_movie_t-2.jpg", "2020-0218-103119_024515_movie_t-1.jpg", "2020-0218-103119_024515_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane one-way road runs between tall office buildings; the pavement is smooth, orange flexible bollards create a narrow divider on the right, and temporary barriers line roadside work on the left. Traffic is light to moderate but halted in the ego lane. A white box truck directly ahead in the ego lane is stopped and blocks the path, consistent with queuing traffic farther up the street as noted in the caption. A few vehicles in the adjacent right lane continue slowly beyond the truck. Prohibitory roadside signs are visible on the left, and the bollards prevent an easy merge around the obstruction.", "hazard_reasoning": "There is a white truck stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with stationary vehicles in the congested traffic."}
{"id": "train_00179", "split": "train", "clip_key": "2020-0131-103016_066710_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "066710"}, "frames": ["2020-0131-103016_066710_movie_t-3.jpg", "2020-0131-103016_066710_movie_t-2.jpg", "2020-0131-103016_066710_movie_t-1.jpg", "2020-0131-103016_066710_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial intersection with an uphill ramp lies ahead, beneath pedestrian footbridges and blue direction signs for Yokohama and Shinagawa; the pavement is smooth, there is no physical median, and traffic is moderate with short queues. A dark taxi crosses ahead from left to right through the intersection and then clears the ego vehicle's path. Directly ahead in the same direction, a line of cars and a truck waits at the base of the ramp, preparing to move uphill and likely governing the ego vehicle's pace. On the far right, several cars and white vans are stopped at their line on a side approach, ready to merge when allowed. Signal heads are present on the structures, though their aspect is not visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00180", "split": "train", "clip_key": "2020-0226-101332_077582_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "077582"}, "frames": ["2020-0226-101332_077582_movie_t-3.jpg", "2020-0226-101332_077582_movie_t-2.jpg", "2020-0226-101332_077582_movie_t-1.jpg", "2020-0226-101332_077582_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three lanes in the ego direction runs between tall office buildings; a guardrail separates oncoming traffic on the right, the asphalt is dry and smooth, and flow is moderate toward a distant junction. A small van ahead in the ego lane holds a steady pace and effectively sets the speed. In the adjacent right lane a compact minivan continues straight slightly ahead without changing lanes, remaining parallel to the ego vehicle. From the far right edge a dark sedan merges into the rightmost lane just ahead, briefly narrowing the lateral gap beside the ego path. Pedestrians walk along the left sidewalk by the hedge and do not approach the roadway.", "hazard_reasoning": "No hazards are present in the caption; the driver can continue at a moderate speed without special precautions."}
{"id": "train_00181", "split": "train", "clip_key": "2020-0207-151349_058332_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "058332"}, "frames": ["2020-0207-151349_058332_movie_t-3.jpg", "2020-0207-151349_058332_movie_t-2.jpg", "2020-0207-151349_058332_movie_t-1.jpg", "2020-0207-151349_058332_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction and smooth pavement runs between midrise buildings; no physical median is visible and traffic is heavy, moving uphill in stop-and-go waves. A silver sedan directly ahead in the ego lane is stopped due to congestion and blocks the ego vehicle's path. To the right, a white minivan slightly ahead creeps forward in the adjacent lane at a similar pace to the queue. A dark commercial truck is alongside at the near right, barely moving and close to the ego car. Farther ahead, a yellow box truck sits in the right lane amid the jam. No signals or speed signs are clearly visible.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car in the ego lane due to traffic congestion ahead. The driver should stop to avoid collision with the stationary vehicle ahead."}
{"id": "train_00182", "split": "train", "clip_key": "2020-0225-102455_003377_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "003377"}, "frames": ["2020-0225-102455_003377_movie_t-3.jpg", "2020-0225-102455_003377_movie_t-2.jpg", "2020-0225-102455_003377_movie_t-1.jpg", "2020-0225-102455_003377_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with smooth pavement carries heavy, queued traffic; two same-direction lanes run alongside a solid orange centerline separating oncoming traffic, though only same-direction vehicles are visible. Immediately to the right alongside, a gray box truck is stopped in the adjacent lane as the queue approaches a signal ahead, limiting any lane change. Very close on the left, a large delivery truck is also stopped or creeping in its lane, narrowing the corridor and blocking side visibility. Straight ahead in the ego lane, a small white truck followed by more vehicles rolls slowly and constrains the pace. Overhead gantry signs in Japanese and a traffic signal are visible above the roadway.", "hazard_reasoning": "There is a gray semi-truck stopped in the left lane because of a right traffic light ahead. The halted truck blocks the lane and reduces forward visibility, requiring the driver to stop to maintain safe following distance and obey the red signal."}
{"id": "train_00183", "split": "train", "clip_key": "2020-0213-143552_045503_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "045503"}, "frames": ["2020-0213-143552_045503_movie_t-3.jpg", "2020-0213-143552_045503_movie_t-2.jpg", "2020-0213-143552_045503_movie_t-1.jpg", "2020-0213-143552_045503_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection comes into view on a two-lane arterial with two same-direction lanes, a raised planted median on the right separating oncoming lanes, and dry, well-marked pavement; traffic is stopped at the light. A white box truck directly ahead in the ego lane is stationary at the stop line because the signal is red, holding the ego vehicle. A green taxi in the adjacent left lane sits slightly ahead, also waiting to proceed straight. A small car in the cross street passes through the intersection from right to left in front of the stopped lanes. Overhead traffic lights for the ego approach show solid red.", "hazard_reasoning": "A white truck stopped in front of the ego car, because of a red traffic light. The truck is halted at the intersection, so the driver must stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_00184", "split": "train", "clip_key": "2020-0129-144857_046753_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "046753"}, "frames": ["2020-0129-144857_046753_movie_t-3.jpg", "2020-0129-144857_046753_movie_t-2.jpg", "2020-0129-144857_046753_movie_t-1.jpg", "2020-0129-144857_046753_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under elevated expressways, with dry asphalt and a guardrail on the right dividing a parallel lane; traffic is heavy and queued at a signal. A silver box truck directly ahead in the ego lane is stopped at a red light, holding the ego car. To the left, a black hatchback followed by a concrete mixer queues in its lane and creeps forward without encroaching. On the right, a white van proceeds slowly on the parallel lane beyond the guardrail, remaining alongside. The overhead traffic light ahead shows red for the ego direction.", "hazard_reasoning": "There is a silver truck stopped in front of the ego car, because of a red traffic light. The driver must stop to avoid rear-ending the halted vehicle and obey the traffic signal."}
{"id": "train_00185", "split": "train", "clip_key": "2020-0131-135401_034453_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "034453"}, "frames": ["2020-0131-135401_034453_movie_t-3.jpg", "2020-0131-135401_034453_movie_t-2.jpg", "2020-0131-135401_034453_movie_t-1.jpg", "2020-0131-135401_034453_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "In an urban neighborhood, the ego-car approaches a narrow two-way street with one lane each way and smooth pavement, leading to a zebra-crosswalk at a signalized junction; traffic is light and momentarily halted. A white hatchback ahead in the ego lane is stopped for the red traffic light at the crosswalk, holding the ego-car behind. On the right in the oncoming lane, a white truck waits near the crosswalk at its stop line, remaining stationary and not entering the ego lane. Overhead traffic signals show red for the ego direction.", "hazard_reasoning": "There is a white hatchback stopped in the left lane, in front of the ego-car, because of the red traffic light at the crosswalk. The driver should follow the vehicle ahead to maintain a safe distance and prevent a rear-end collision due to sudden stopping."}
{"id": "train_00186", "split": "train", "clip_key": "2020-0131-135401_008903_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008903"}, "frames": ["2020-0131-135401_008903_movie_t-3.jpg", "2020-0131-135401_008903_movie_t-2.jpg", "2020-0131-135401_008903_movie_t-1.jpg", "2020-0131-135401_008903_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street climbs gently, with the ego car in the left lane of a narrow two-lane road; pavement is fair, and a work zone lines the right side, narrowing the oncoming lane while overall traffic is light to moderate. A white box truck ahead in the ego lane slows toward the junction, constraining the ego vehicle because the traffic signal ahead is red. An oncoming small van proceeds cautiously past the barricades through the narrowed opposing lane but remains clear of the ego path. Several pedestrians walk along the left sidewalk near the curb without approaching the roadway. A large construction truck is parked within the roadside work zone, with cones and barriers tight to the roadway.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of the red traffic lights ahead. The driver should slow down to maintain a safe distance as the front truck is decelerating for a red light."}
{"id": "train_00187", "split": "train", "clip_key": "2020-0228-102841_013106_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "013106"}, "frames": ["2020-0228-102841_013106_movie_t-3.jpg", "2020-0228-102841_013106_movie_t-2.jpg", "2020-0228-102841_013106_movie_t-1.jpg", "2020-0228-102841_013106_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction and no median, the pavement dry and traffic heavy with stop-and-go movement. A black sedan directly ahead in the ego lane starts to roll forward as the queue ahead moves, setting the ego vehicle's pace. In the oncoming lane to the right, a white truck and other cars wait in a slow queue facing the ego vehicle, remaining in their lane. On the left curb ahead, a delivery truck is parked with its rear open while a worker stands beside stacked crates close to the roadway, narrowing the ego lane and forming a minor obstruction.", "hazard_reasoning": "There is a black sedan starting to move in front of the ego car in the ego lane, because traffic ahead is moving. The driver should follow the vehicle ahead to maintain safe spacing and anticipate the change in the traffic signal."}
{"id": "train_00188", "split": "train", "clip_key": "titan_clip_118_000108_movie", "source": {"subset": "titan", "scenario": "clip_118", "frame": "000108"}, "frames": ["titan_clip_118_000108_movie_t-3.jpg", "titan_clip_118_000108_movie_t-2.jpg", "titan_clip_118_000108_movie_t-1.jpg", "titan_clip_118_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban backstreet with tall buildings lines both sides, forming a single undivided lane with smooth asphalt and edge lines; traffic is light with no vehicles immediately ahead. On the right side near the curb, a man wearing a black-and-white shirt and black pants uses crutches and walks toward the ego vehicle along the roadway edge, moving close to the travel lane and effectively setting the pace. No other moving road users are evident, and no traffic signals or posted speed signs are visible. The lane itself stays clear and unobstructed as the scene progresses.", "hazard_reasoning": "There is a man wearing a black-and-white shirt and black pants, using crutches, and walking towards the ego car, on the right side of the road. The driver should carefully manoeuvre around the pedestrian to avoid collision, as he may have limited mobility."}
{"id": "train_00189", "split": "train", "clip_key": "2020-0226-140503_068029_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "068029"}, "frames": ["2020-0226-140503_068029_movie_t-3.jpg", "2020-0226-140503_068029_movie_t-2.jpg", "2020-0226-140503_068029_movie_t-1.jpg", "2020-0226-140503_068029_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to turning vehicles", "environment_perception": "An urban signalized intersection on a smooth two-lane approach with no median is ahead, and traffic is moderate with our direction paused at a red light while cross-traffic flows. A dark hatchback waits directly ahead in the ego lane at the stop line as cross-traffic and turning vehicles move through the intersection, keeping it in our path. To the right, a green taxi holds position beside us in the adjacent lane near the stop line without encroaching. In the junction, several cars travel left to right, maintaining movement through the box and delaying our lane.", "hazard_reasoning": "There is a blue hatchback stopped in front of the ego-car, in the ego lane, because of other vehicles turning ahead in the intersection. The hatchback's sudden stop due to turning vehicles may require yielding to avoid a rear-end collision."}
{"id": "train_00190", "split": "train", "clip_key": "2020-0225-102455_071698_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "071698"}, "frames": ["2020-0225-102455_071698_movie_t-3.jpg", "2020-0225-102455_071698_movie_t-2.jpg", "2020-0225-102455_071698_movie_t-1.jpg", "2020-0225-102455_071698_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial without a visible median shows dry pavement and slow, heavy flow between tall buildings. A white van directly ahead in the ego lane slows due to congestion ahead, setting the ego vehicle's pace. In the right adjacent lane, a black taxi and a gray hatchback move slowly alongside and slightly ahead, advancing with the queue while remaining parallel to the ego car. Along the left curb, several service vans and trucks are stopped, occupying much of the leftmost lane.", "hazard_reasoning": "There is a white van slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. Drivers should slow down to maintain a safe following distance as the van ahead reduces speed due to congestion."}
{"id": "train_00191", "split": "train", "clip_key": "2020-0203-114632_042480_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "042480"}, "frames": ["2020-0203-114632_042480_movie_t-3.jpg", "2020-0203-114632_042480_movie_t-2.jpg", "2020-0203-114632_042480_movie_t-1.jpg", "2020-0203-114632_042480_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road runs between mid-rise buildings, divided by solid white lines on dry, smooth pavement, with light traffic flowing toward a signalized intersection. Ahead in the ego lane, a silver van drives steadily and continues through the junction under a green light, setting the ego vehicle's pace. Oncoming cars travel in the right-side lanes beyond the divider and proceed straight. A person stands on the left sidewalk near the corner without crossing. A car is parked along the right curb and remains stationary.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00192", "split": "train", "clip_key": "2020-0207-151349_019422_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_019422_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_019422_movie_t-3_augB1.jpg", "2020-0207-151349_019422_movie_t-2_augB1.jpg", "2020-0207-151349_019422_movie_t-1_augB1.jpg", "2020-0207-151349_019422_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road between tall buildings has smooth pavement and metal guardrails along the left, with moderate, slow-moving traffic. Bright low sun glare washes the view from the upper left as the road trends slightly right. A white box truck directly ahead in the ego lane slows and the ego car follows, so the truck controls the pace. To the right, a black SUV in the adjacent lane moves forward at a similar speed slightly ahead, limiting space for a lane change. On the far left behind a barrier, a cyclist rides parallel to traffic in a separated lane and remains outside the roadway.", "hazard_reasoning": "There's a white truck slowing in front of the ego car in the ego lane. The truck's deceleration may require sudden braking from the driver, so you should slow down to maintain a safe following distance."}
{"id": "train_00193", "split": "train", "clip_key": "2020-0127-132751_062146_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "062146"}, "frames": ["2020-0127-132751_062146_movie_t-3.jpg", "2020-0127-132751_062146_movie_t-2.jpg", "2020-0127-132751_062146_movie_t-1.jpg", "2020-0127-132751_062146_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban undivided road with a single through lane in the ego direction and a marked side lane on the right has smooth pavement and moderate flow that bunches as vehicles slow. A silver sedan directly ahead in the ego lane slows because a box truck farther ahead is reducing speed, which in turn constrains the ego car's pace. The white box truck ahead in the same lane continues decelerating and leads the queue. A small car is parked along the right curb outside the travel lane and poses no obstruction.", "hazard_reasoning": "There is a silver sedan slowing in the ego lane, in front of the ego car, because of the truck slowing ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision as the vehicles ahead decelerate."}
{"id": "train_00194", "split": "train", "clip_key": "2020-0204-150838_052580_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "052580"}, "frames": ["2020-0204-150838_052580_movie_t-3.jpg", "2020-0204-150838_052580_movie_t-2.jpg", "2020-0204-150838_052580_movie_t-1.jpg", "2020-0204-150838_052580_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road curves right between a high concrete wall on the right and a guardrail with trees on the left; the pavement is smooth and traffic is light. A white box truck ahead in the ego lane accelerates slightly and pulls away as the road ahead stays clear. A large dump truck travels in the adjacent left lane roughly alongside before easing back, remaining in its lane and not constraining the ego path. Far ahead around the bend, a small car proceeds in the same direction with ample separation.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00195", "split": "train", "clip_key": "2020-0218-103119_042951_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "042951"}, "frames": ["2020-0218-103119_042951_movie_t-3.jpg", "2020-0218-103119_042951_movie_t-2.jpg", "2020-0218-103119_042951_movie_t-1.jpg", "2020-0218-103119_042951_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid a rear-end collision", "environment_perception": "An urban two-way road with one lane each direction, divided by double solid lines, runs past mid-rise buildings; the pavement looks smooth and traffic is light, though the ego lane is briefly halted. Immediately ahead in the ego lane a large white truck is stopped, blocking the path and constraining the ego vehicle's pace. On the right sidewalk a pedestrian walks along past a gated entrance without approaching the roadway. A side street merges from the left just beyond the truck, partly hidden by the truck's body and creating a short blind area.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane. Because the truck is stopped directly ahead, the driver should stop to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_00196", "split": "train", "clip_key": "2020-0131-103016_085579_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "085579"}, "frames": ["2020-0131-103016_085579_movie_t-3.jpg", "2020-0131-103016_085579_movie_t-2.jpg", "2020-0131-103016_085579_movie_t-1.jpg", "2020-0131-103016_085579_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with smooth pavement and two lanes in the ego's direction runs straight under cloudy skies, and traffic flows at a moderate, steady pace. A small white kei van ahead in the ego lane proceeds straight at constant speed and modestly sets the pace. To its right, a white van in the right lane drives away from the ego car, continuing straight and gradually pulling ahead. Farther right, a darker van also continues straight without affecting the ego's path. On the left by a convenience store, two people with bicycles wait at the curb beside the crosswalk, potentially entering if they step off. An overhead signal shows a green straight-ahead indication.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00197", "split": "train", "clip_key": "2020-0217-144444_002064_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "002064"}, "frames": ["2020-0217-144444_002064_movie_t-3.jpg", "2020-0217-144444_002064_movie_t-2.jpg", "2020-0217-144444_002064_movie_t-1.jpg", "2020-0217-144444_002064_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial with two same-direction lanes is shown, bordered by railings on the left and a bollard-separated edge lane on the right, with dry, well-kept pavement. Traffic is heavy and moves slowly. Ahead in the ego lane, a yellow sedan slows because vehicles farther ahead are braking, and it sets the ego car's pace. In the adjacent right lane, a white minivan ahead creeps forward in the queue, remaining parallel to the ego vehicle. A large truck immediately to the right travels alongside at low speed, limiting any chance to change lanes.", "hazard_reasoning": "There is a yellow sedan slowing in the ego lane, away from the ego car, because of the vehicles slowing ahead. Follow the vehicle ahead to maintain a safe distance and adjust speed to the slowing traffic."}
{"id": "train_00198", "split": "train", "clip_key": "2020-0129-144857_043482_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "043482"}, "frames": ["2020-0129-144857_043482_movie_t-3.jpg", "2020-0129-144857_043482_movie_t-2.jpg", "2020-0129-144857_043482_movie_t-1.jpg", "2020-0129-144857_043482_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, approaching a signalized intersection on dry, well-marked pavement; traffic is moderate and moves slowly. Ahead in the ego lane, a white box truck reduces speed because congestion forms beyond the intersection, constraining the ego vehicle's pace. Slightly ahead to the left, a small white van continues straight in the adjacent lane and pulls away without entering the ego lane. On the right at the cross street, a dark SUV waits near the crosswalk to join traffic but remains stopped and out of the ego path.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and accommodate the reduced speed caused by the congestion."}
{"id": "train_00199", "split": "train", "clip_key": "2020-0210-101957_022625_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_022625_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_022625_movie_t-3_augB1.jpg", "2020-0210-101957_022625_movie_t-2_augB1.jpg", "2020-0210-101957_022625_movie_t-1_augB1.jpg", "2020-0210-101957_022625_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the motorcycle ahead", "environment_perception": "An urban two-way street with two same-direction lanes and a painted centerline has smooth pavement and steady moderate flow as it approaches a signalized intersection. A black motorcycle travels ahead in the ego lane, continuing straight and effectively setting the ego vehicle's pace. A silver kei van runs slightly ahead to the right in the adjacent lane, proceeding straight while remaining in its lane. Several oncoming cars pass through the junction in the opposite lanes to the right, continuing without conflict. Overhead traffic lights span the intersection, and low railings border the left sidewalk.", "hazard_reasoning": "There is a black motorcycle driving in front of the ego car, in the ego lane. The motorcycle directly ahead may brake suddenly or change speed unexpectedly, so the driver should be aware and maintain a safe following distance aligning with the warning to be cautious."}
{"id": "train_00200", "split": "train", "clip_key": "2020-0203-114632_077405_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "077405"}, "frames": ["2020-0203-114632_077405_movie_t-3.jpg", "2020-0203-114632_077405_movie_t-2.jpg", "2020-0203-114632_077405_movie_t-1.jpg", "2020-0203-114632_077405_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane each direction and a solid center line runs through a commercial strip; the pavement is good and traffic in the ego direction is queued and slow while oncoming flow is light. A silver van is stopped directly ahead in the ego lane because of traffic congestion ahead, controlling the ego car's pace. Farther ahead in the same lane, a large construction truck is also halted, adding to the queue. Oncoming cars pass steadily in the opposite lane without interacting with the ego lane.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary vehicle in dense traffic."}
{"id": "train_00201", "split": "train", "clip_key": "titan_clip_764_000174_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_764_000174_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_764_000174_movie_t-3_augB1.jpg", "titan_clip_764_000174_movie_t-2_augB1.jpg", "titan_clip_764_000174_movie_t-1_augB1.jpg", "titan_clip_764_000174_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian in road", "environment_perception": "An urban commercial street with a narrow single carriageway, no center divider, worn pavement, and very light vehicular traffic unfolds as the car proceeds straight past dense shopfronts. A pedestrian stands in the middle of the road ahead, occupying the ego path and reducing available lane space. On the left near the curb, several pedestrians walk diagonally into the roadway and approach the car's path as they cross toward the center. On the right edge beside the shops, a man with a bag walks along the curb close to the lane.", "hazard_reasoning": "There is a pedestrian standing in the middle of the road. The pedestrian could step into the vehicle's path, so the driver should be aware to avoid a collision."}
{"id": "train_00202", "split": "train", "clip_key": "2020-0228-150133_055113_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "055113"}, "frames": ["2020-0228-150133_055113_movie_t-3.jpg", "2020-0228-150133_055113_movie_t-2.jpg", "2020-0228-150133_055113_movie_t-1.jpg", "2020-0228-150133_055113_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement runs past mid-rise buildings, with a painted chevron median separating oncoming lanes to the right; traffic is moderate and begins to slow. A sedan directly ahead in the ego lane reduces speed in forming congestion, constraining the ego vehicle's pace, consistent with the note that it slows because of traffic. A white hatchback travels slightly ahead to the left in the adjacent same-direction lane and continues steadily, limiting an immediate lane change. Farther ahead in the ego lane a large bus and several cars bunch up and brake, reinforcing the slowdown. In the opposite direction, several vans and trucks approach on the right beyond the chevron, remaining separated. An overhead blue directional sign spans the roadway.", "hazard_reasoning": "There is a red sedan slowing down in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and avoid collision in the congested traffic."}
{"id": "train_00203", "split": "train", "clip_key": "2020-0227-153144_022086_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "022086"}, "frames": ["2020-0227-153144_022086_movie_t-3.jpg", "2020-0227-153144_022086_movie_t-2.jpg", "2020-0227-153144_022086_movie_t-1.jpg", "2020-0227-153144_022086_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection in a left-hand-traffic city setting has smooth pavement and moderate flow, and the ego car waits at the stop line at a red signal while cross-traffic proceeds through. Ahead, a stream of pedestrians crosses the zebra crossing both directions across the ego lane, holding the vehicle stationary. A pedestrian wearing a black jacket and a checkered shirt crosses toward the left side of the road within this group as the red light remains on. In the middle of the junction, a silver minivan travels right to left across the ego path, clearing the intersection while the ego continues to wait.", "hazard_reasoning": "There is a pedestrian wearing a black jacket and checkered shirt, crossing at the pedestrian crosswalk to the left side of the road, because of the red light. The pedestrian is entering the crosswalk despite the red light, so the driver should stop immediately to yield and avoid a collision."}
{"id": "train_00204", "split": "train", "clip_key": "titan_clip_671_000504_movie", "source": {"subset": "titan", "scenario": "clip_671", "frame": "000504"}, "frames": ["titan_clip_671_000504_movie_t-3.jpg", "titan_clip_671_000504_movie_t-2.jpg", "titan_clip_671_000504_movie_t-1.jpg", "titan_clip_671_000504_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian waiting to cross", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway and no centerline; the ego vehicle keeps left on smooth but tight pavement, and traffic is light with no oncoming vehicles. On the left near midframe, a pedestrian wearing a black T-shirt and gray shorts waits at the curb to cross, potentially entering the ego lane. Ahead on the right, a white van is parked partly in the roadway, narrowing the passage and pushing the ego line leftward. Farther ahead on the right edge, another pedestrian walks along the sidewalk away from the camera without entering the road. An orange construction sign and rows of bollards line the right curb, marking a constrained shoulder.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and gray shorts and waiting to cross the street from the left side of the road away from the ego car. The driver should be prepared to yield because the pedestrian may step onto the crosswalk unexpectedly."}
{"id": "train_00205", "split": "train", "clip_key": "titan_clip_887_000546_movie", "source": {"subset": "titan", "scenario": "clip_887", "frame": "000546"}, "frames": ["titan_clip_887_000546_movie_t-3.jpg", "titan_clip_887_000546_movie_t-2.jpg", "titan_clip_887_000546_movie_t-1.jpg", "titan_clip_887_000546_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A busy urban commercial street with two same-direction lanes and no median runs between shops, the pavement smooth and dry as moderate flow slows near roadside work and parked trucks. Ahead of the ego vehicle, a black sedan from the left lane cuts in and merges into the ego lane, briefly constraining the pace. Farther forward, a small white flatbed in the same lane moves slowly and effectively sets the speed for following traffic. To the left, a dark van travels alongside in the adjacent lane without merging. Along the right curb, a tarp-covered work truck and cones narrow the roadway and form a pinch point.", "hazard_reasoning": "There is black sedan ahead that is cutting in to the ego lane from the left. Slow down to maintain a safe distance and avoid collision with the merging vehicle."}
{"id": "train_00206", "split": "train", "clip_key": "2020-0225-102455_016856_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_016856_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_016856_movie_t-3_augB1.jpg", "2020-0225-102455_016856_movie_t-2_augB1.jpg", "2020-0225-102455_016856_movie_t-1_augB1.jpg", "2020-0225-102455_016856_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction runs between midrise buildings, divided by double solid white lines on dry, smooth pavement, and traffic is light to moderate. Ahead in the ego lane a white box truck slows, constraining the ego vehicle's pace. Farther ahead near the pedestrian overpass another larger truck continues in the same direction, keeping the flow slow. In the opposite lane an oncoming sedan approaches steadily and passes the trucks without deviating. At the right curb on the opposite side a dark car sits near the lane edge but remains stationary. A large 50 marking on the roadway indicates the posted speed along this stretch.", "hazard_reasoning": "There is a white truck slowing in the ego lane. The ego-vehicle may close in too quickly on the decelerating truck, so maintain a safe following distance aligning with the warning to slow down."}
{"id": "train_00207", "split": "train", "clip_key": "2020-0210-101957_047357_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "047357"}, "frames": ["2020-0210-101957_047357_movie_t-3.jpg", "2020-0210-101957_047357_movie_t-2.jpg", "2020-0210-101957_047357_movie_t-1.jpg", "2020-0210-101957_047357_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial shows smooth pavement with painted dividers, and traffic flows heavily in a slow, stop-and-go queue. A black sedan directly ahead in the ego lane slows because congestion builds in front, constraining the ego car's pace. To the left, a white delivery van slightly ahead in the adjacent lane inches forward with the line, remaining close to the ego path. On the right, a large box truck in the neighboring lane crawls alongside, partly blocking right-side visibility and keeping lateral space tight.", "hazard_reasoning": "There is a black sedan slowing down in the front of the ego-car, in the ego lane, because of traffic congestion ahead. Slow down to maintain a safe distance and prevent a collision under congested conditions."}
{"id": "train_00208", "split": "train", "clip_key": "titan_clip_137_000282_movie", "source": {"subset": "titan", "scenario": "clip_137", "frame": "000282"}, "frames": ["titan_clip_137_000282_movie_t-3.jpg", "titan_clip_137_000282_movie_t-2.jpg", "titan_clip_137_000282_movie_t-1.jpg", "titan_clip_137_000282_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian with the cart.", "environment_perception": "An urban two-way street with one lane each way, no median, and smooth pavement shows light traffic as the ego approaches a cross-street without visible signals. A silver microvan ahead in the ego lane rolls slowly toward the junction. A pedestrian wearing a striped shirt and black pants pushes a blue cart away from the ego in the middle of the road ahead, occupying the lane and constraining the van's pace. The oncoming lane near the intersection is clear, while other pedestrians stay on the sidewalks by the crosswalks.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt and black pants, and pushing a blue cart away from the ego car, in the middle of the road. The pedestrian is in the roadway and may cross unpredictably, so the driver should yield to allow them to pass safely."}
{"id": "train_00209", "split": "train", "clip_key": "2020-0210-101957_056240_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "056240"}, "frames": ["2020-0210-101957_056240_movie_t-3.jpg", "2020-0210-101957_056240_movie_t-2.jpg", "2020-0210-101957_056240_movie_t-1.jpg", "2020-0210-101957_056240_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated road with sound barriers on both sides curves gently right and climbs, its smooth pavement marked by a solid orange center line; traffic is slow and dense. A black SUV ahead in the ego lane proceeds cautiously and intermittently slows, controlling the ego vehicle's pace. Slightly farther ahead, a white van continues up the grade in the same lane within the queue, reinforcing the slowdown. A large red truck travels very close alongside on the left edge of the roadway at a similar speed, reducing lateral space for the ego vehicle. Farther up the rise, a continuous line of cars indicates ongoing congestion, and no salient signals or signs are visible.", "hazard_reasoning": "No caption provided. No immediate hazards detected, as traffic is moderate and sightlines, while partially obstructed by the truck, remain manageable."}
{"id": "train_00210", "split": "train", "clip_key": "2020-0127-132751_059670_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "059670"}, "frames": ["2020-0127-132751_059670_movie_t-3.jpg", "2020-0127-132751_059670_movie_t-2.jpg", "2020-0127-132751_059670_movie_t-1.jpg", "2020-0127-132751_059670_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with a painted double centerline runs between midrise buildings; the asphalt is dry and smooth, and traffic in the ego direction is moderate and compressing. A silver sedan directly ahead in the ego lane slows because congestion forms further up the road, constraining the ego car's pace. Farther ahead in the same direction, a box truck and several cars queue and move slowly, sustaining the bottleneck. In the opposite lanes to the right, oncoming cars continue past steadily, separated by the median and not interacting with the ego vehicle.", "hazard_reasoning": "There is a silver sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid collision under this situation."}
{"id": "train_00211", "split": "train", "clip_key": "2020-0213-143552_040171_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "040171"}, "frames": ["2020-0213-143552_040171_movie_t-3.jpg", "2020-0213-143552_040171_movie_t-2.jpg", "2020-0213-143552_040171_movie_t-1.jpg", "2020-0213-143552_040171_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street under an elevated roadway has two same-direction lanes with smooth pavement and light traffic approaching a signalized intersection. A white box truck directly ahead in the ego lane continues forward through the green light, setting the ego vehicle's pace. On the left at the corner by the crosswalk, several pedestrians and cyclists wait on the sidewalk. The traffic signal facing the ego approach shows green. The right edge is lined by a fence with parked cars beyond, and no obstacles or oncoming traffic appear.", "hazard_reasoning": "There is a white truck driving in front of the ego car in the ego lane, because of the green traffic light. Follow the vehicle ahead to safely navigate the intersection and respond to any sudden changes in traffic flow."}
{"id": "train_00212", "split": "train", "clip_key": "2020-0129-105040_066052_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "066052"}, "frames": ["2020-0129-105040_066052_movie_t-3.jpg", "2020-0129-105040_066052_movie_t-2.jpg", "2020-0129-105040_066052_movie_t-1.jpg", "2020-0129-105040_066052_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road without a median stretches ahead, lined with white guardrails and building walls; the pavement is dry and smooth, and traffic is light with the oncoming lane clear and no same-direction vehicle immediately ahead. A pedestrian ahead at the right curb steps into the marked crosswalk and walks left across the ego lane, directly affecting the vehicle's path. A large bus stands at the right curb beside the crosswalk, stationary and partly obscuring the view to the right, making its position relevant to the ego vehicle's progress. No traffic signals are visible, and there are no obstacles in the ego lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00213", "split": "train", "clip_key": "2020-0205-103411_001426_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "001426"}, "frames": ["2020-0205-103411_001426_movie_t-3.jpg", "2020-0205-103411_001426_movie_t-2.jpg", "2020-0205-103411_001426_movie_t-1.jpg", "2020-0205-103411_001426_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban intersection with roadside construction and smooth pavement shows a multilane, median-free roadway where traffic is moderate but momentarily stopped at a zebra crossing. A black sedan directly ahead in the ego lane is stopped at the crosswalk, yielding to pedestrians, which holds the ego car in place. In the adjacent right lane ahead, a red taxi rolls slowly and then waits beside the crosswalk, limiting lateral space next to the sedan. Multiple pedestrians cross left to right on the crosswalk in front of the stopped vehicles, continuing to pass and keeping traffic halted. A blue pedestrian crossing sign is posted above the crossing, and cones and temporary fencing line the left edge of the roadway near the work area.", "hazard_reasoning": "There is a black sedan stopped in the middle of the intersection, in front of the ego-car, because of pedestrians crossing ahead at the crosswalk. This stopped vehicle indicates pedestrians are actively crossing, so the driver should slow down to maintain safe distance and avoid collision."}
{"id": "train_00214", "split": "train", "clip_key": "2020-0227-104226_085143_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "085143"}, "frames": ["2020-0227-104226_085143_movie_t-3.jpg", "2020-0227-104226_085143_movie_t-2.jpg", "2020-0227-104226_085143_movie_t-1.jpg", "2020-0227-104226_085143_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes is divided from oncoming traffic on the right by a striped painted median; the pavement is dry and traffic is heavy and slow in a short queue. A red SUV directly ahead in the ego lane slows because vehicles are bunched up, and it governs the ego car's pace. To the left, a red sedan slightly ahead creeps forward in the adjacent lane, remaining parallel to the SUV. On the right, an oncoming silver truck advances in its lane beyond the median and passes without conflict. Farther ahead, more vehicles, including a white box truck, are queued in the same direction.", "hazard_reasoning": "There is a red SUV slowing down in front of the ego car, because of traffic congestion ahead. Therefore, the driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_00215", "split": "train", "clip_key": "2020-0207-101955_112218_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "112218"}, "frames": ["2020-0207-101955_112218_movie_t-3.jpg", "2020-0207-101955_112218_movie_t-2.jpg", "2020-0207-101955_112218_movie_t-1.jpg", "2020-0207-101955_112218_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial runs beneath an elevated expressway, with two same-direction lanes, a concrete barrier on the right, and a coned taper closing the left edge; the pavement is good and traffic is moderate with brief slowdowns. Directly ahead in the ego lane a blue sedan slows because a small truck farther ahead is decelerating near the merge, constraining the lane. In the adjacent right lane a white minivan travels slightly ahead at a steady pace and continues straight without interacting. Farther left a large box truck creeps along the coned area, keeping the shoulder crowded. Overhead directional signs are visible; no signals are in view.", "hazard_reasoning": "There is a blue sedan slowing in the ego lane, because of the truck slowing down ahead. The sedan's deceleration signals a potential sudden braking event ahead, so you should slow down to maintain a safe following distance."}
{"id": "train_00216", "split": "train", "clip_key": "2020-0225-145150_019621_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "019621"}, "frames": ["2020-0225-145150_019621_movie_t-3.jpg", "2020-0225-145150_019621_movie_t-2.jpg", "2020-0225-145150_019621_movie_t-1.jpg", "2020-0225-145150_019621_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with smooth pavement and a narrow raised median with bollards divides opposing flows, leading to a signalized intersection marked by wide zebra crossings. Traffic is moderate to heavy and compresses into a slow queue near the junction. A black hatchback directly ahead in the ego lane slows because of congestion ahead, constraining the ego car's pace. Slightly left of it, a beige van in the adjacent same-direction lane also eases toward the queue and remains alongside. Across the median, oncoming cars move steadily without interacting with the ego path. Pedestrians wait on the sidewalks near the crosswalks and remain clear of the road.", "hazard_reasoning": "There is a black hatchback slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down because traffic congestion ahead may require sudden braking to maintain a safe following distance."}
{"id": "train_00217", "split": "train", "clip_key": "2020-0204-150838_058506_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "058506"}, "frames": ["2020-0204-150838_058506_movie_t-3.jpg", "2020-0204-150838_058506_movie_t-2.jpg", "2020-0204-150838_058506_movie_t-1.jpg", "2020-0204-150838_058506_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway ramp with a single lane runs between concrete barriers under an elevated structure; the pavement looks smooth and dry, and overall flow is moderate with parallel traffic on a separated lane to the right. A gray coach bus directly ahead in the ego lane slows, constraining the ego car's pace. On the adjacent roadway to the right, a white box truck travels slightly ahead at a steady speed, divided by the barrier so it does not interact with the ego lane. Farther right, a small car follows the truck in the same separated stream. The narrow channelized ramp and high concrete walls limit lateral escape and sight lines.", "hazard_reasoning": "There is a gray bus slowing down in the ego lane in front of the ego car. The bus ahead is decelerating, increasing the risk of a rear-end collision, so you should slow down to maintain a safe following distance."}
{"id": "train_00218", "split": "train", "clip_key": "titan_clip_1002_000540_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1002_000540_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1002_000540_movie_t-3_augB1.jpg", "titan_clip_1002_000540_movie_t-2_augB1.jpg", "titan_clip_1002_000540_movie_t-1_augB1.jpg", "titan_clip_1002_000540_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian entering vehicle", "environment_perception": "A narrow urban street with a single moving lane and curbside parking has smooth dry pavement and light same-direction traffic. A small utility cart proceeds ahead in the ego lane at low speed, setting the pace. On the left near the ego vehicle, a pedestrian wearing all gray is entering his parked car and stands close to the travel lane, reducing clearance. Farther along the left, a white mini-truck and other cars remain parked, narrowing the lane. On the right at a cone-lined entrance to an underground parking facility, a pedestrian waits on the sidewalk without stepping into the lane.", "hazard_reasoning": "There is a pedestrian wearing all gray, entering his vehicle parked on the left side of the road. The driver should slow down because the pedestrian may step into the lane unexpectedly."}
{"id": "train_00219", "split": "train", "clip_key": "titan_clip_475_000312_movie", "source": {"subset": "titan", "scenario": "clip_475", "frame": "000312"}, "frames": ["titan_clip_475_000312_movie_t-3.jpg", "titan_clip_475_000312_movie_t-2.jpg", "titan_clip_475_000312_movie_t-1.jpg", "titan_clip_475_000312_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Yield for pedestrian on right side", "environment_perception": "A narrow urban commercial street with a single lane and raised curbs runs gently uphill through shops; pavement is smooth and traffic is light with a slight left bend ahead. A small black car ahead in the ego lane proceeds slowly toward the bend, setting the pace. A pedestrian is in the roadway ahead, crossing from left to right toward the sidewalk and briefly occupying the ego path. On the right sidewalk, a pedestrian wearing a white shirt and black pants carries a handbag and walks away from the ego car along the curb. Several other pedestrians walk along both sidewalks near the shopfronts.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a handbag, and walking away from the ego car on the right side of the road. The driver should yield because the pedestrian is close to the roadway and may step into the lane unexpectedly."}
{"id": "train_00220", "split": "train", "clip_key": "2020-0220-102630_002194_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "002194"}, "frames": ["2020-0220-102630_002194_movie_t-3.jpg", "2020-0220-102630_002194_movie_t-2.jpg", "2020-0220-102630_002194_movie_t-1.jpg", "2020-0220-102630_002194_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs under an elevated structure toward a signalized intersection, the pavement smooth and traffic moderate. A black van ahead in the ego lane drives away and sets the pace as both vehicles continue straight. To the right, several cars in adjacent lanes move toward the junction, easing slightly as they approach the lights without encroaching on the ego lane. A pedestrian walks along the left sidewalk behind a guardrail, remaining clear of the carriageway. Overhead signs show a straight-ahead arrow and a posted 50 limit, and flexible posts delineate a right-side lane near the intersection.", "hazard_reasoning": "A black van is driving away from the ego car, in the ego lane in front of the ego car. The red light ahead means vehicles will stop, so following the van helps maintain safe distance and anticipate the stop."}
{"id": "train_00221", "split": "train", "clip_key": "titan_clip_745_000462_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_745_000462_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_745_000462_movie_t-3_augB1.jpg", "titan_clip_745_000462_movie_t-2_augB1.jpg", "titan_clip_745_000462_movie_t-1_augB1.jpg", "titan_clip_745_000462_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street lined with shops and utility poles has no median, the pavement is dry and smooth, and traffic is light with no moving vehicles visible. Ahead in the ego lane, a man in a black T-shirt and black pants carrying a shoulder bag walks away from the car along the center, directly occupying the vehicle's path. Farther ahead, another pedestrian continues away near the middle of the road and may remain in the ego lane. On the right edge by a storefront, several pedestrians stand close to the curb and edge forward, so they may step into the lane. A white van is parked along the left curb just ahead, reducing clearance. A yellow pedestrian caution sign is posted on the right.", "hazard_reasoning": "There is a big man wearing a black T-shirt and black pants, carrying a shoulder bag, and walking in front of the ego car, away from the ego car. You should carefully manoeuvre around the pedestrian to maintain safe clearance and avoid collision."}
{"id": "train_00222", "split": "train", "clip_key": "2020-0205-152530_007770_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "007770"}, "frames": ["2020-0205-152530_007770_movie_t-3.jpg", "2020-0205-152530_007770_movie_t-2.jpg", "2020-0205-152530_007770_movie_t-1.jpg", "2020-0205-152530_007770_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian at crosswalk", "environment_perception": "An urban two-lane road with a yellow centerline leads to a signalized intersection and zebra crossing; pavement is smooth and traffic is light with no moving vehicles as the ego approaches in the left lane. On the left at the crosswalk, a pedestrian carrying a backpack waits to cross and may enter the ego lane. Next to them, another person stands at the curb also waiting to cross across the ego path. On the right curb, a pedestrian stands near a bicycle and waits, potentially stepping off after the light changes. The overhead signal facing the ego approach shows red.", "hazard_reasoning": "There is a pedestrian carrying a backpack and waiting to cross, at the crosswalk, on the left side of the intersection. The driver should yield to allow the pedestrian to cross safely when the signal changes."}
{"id": "train_00223", "split": "train", "clip_key": "2020-0214-102601_075936_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "075936"}, "frames": ["2020-0214-102601_075936_movie_t-3.jpg", "2020-0214-102601_075936_movie_t-2.jpg", "2020-0214-102601_075936_movie_t-1.jpg", "2020-0214-102601_075936_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single narrow lane each direction runs between low-rise shops and sidewalks; the pavement is smooth and traffic is light as the ego car proceeds in the left lane. Ahead in the ego lane, a black SUV is stopped at the intersection for the triangular stop sign, so it holds the ego vehicle's pace. On the left sidewalk, several pedestrians and a few cyclists move past rows of parked bicycles but remain off the roadway. A blue sign with a left-turn arrow is posted near the stop sign above the junction.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, because of the stop sign. The driver should stop to avoid colliding with the stopped SUV at the stop sign."}
{"id": "train_00224", "split": "train", "clip_key": "titan_clip_1011_000078_movie", "source": {"subset": "titan", "scenario": "clip_1011", "frame": "000078"}, "frames": ["titan_clip_1011_000078_movie_t-3.jpg", "titan_clip_1011_000078_movie_t-2.jpg", "titan_clip_1011_000078_movie_t-1.jpg", "titan_clip_1011_000078_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrians crossing ahead.", "environment_perception": "An urban shopping street with a narrow two-way road and no median shows worn asphalt and very slow movement as a zebra crossing dominates the scene. The ego vehicle waits while two pedestrians, one in a white T-shirt and one in a black T-shirt, cross from right to left immediately ahead, directly in the ego lane. Additional pedestrians stream across from both sides near and far, some walking diagonally, continuing to occupy the crosswalk and constrain progress. A silver van stands along the right curb in the oncoming side ahead, narrowing the view and space near the crossing.", "hazard_reasoning": "There are two pedestrians, wearing a white t-shirt and black t-shirt, crossing the street in front of the ego car, from the right side to the left. The driver must yield because the pedestrians are crossing ahead and have the right of way at the intersection."}
{"id": "train_00225", "split": "train", "clip_key": "2020-0131-103016_070262_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "070262"}, "frames": ["2020-0131-103016_070262_movie_t-3.jpg", "2020-0131-103016_070262_movie_t-2.jpg", "2020-0131-103016_070262_movie_t-1.jpg", "2020-0131-103016_070262_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial with smooth pavement and a right-side guardrail runs between tall buildings, and traffic moves at a moderate pace. A silver box truck directly ahead in the ego lane slows, constraining the ego car's speed. To the left, a black sedan slightly ahead continues straight at a similar pace, occupying that lane and limiting an immediate move left. To the right, a light-colored minivan overtakes in the adjacent lane, covering the ego car's right side. Farther ahead in the right lane, a motorcycle proceeds steadily away.", "hazard_reasoning": "There is a silver truck slowing in front of the ego car, in the ego lane. The silver truck is decelerating and could require the driver to brake suddenly to avoid a collision, so the driver should slow down accordingly."}
{"id": "train_00226", "split": "train", "clip_key": "2020-0220-151845_041491_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "041491"}, "frames": ["2020-0220-151845_041491_movie_t-3.jpg", "2020-0220-151845_041491_movie_t-2.jpg", "2020-0220-151845_041491_movie_t-1.jpg", "2020-0220-151845_041491_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway carries two same-direction lanes bounded by concrete walls, with smooth pavement and moderate traffic. In the ego lane ahead, a small covered truck slows and briefly reduces the ego car's pace. To the right, a black sedan is stopped in the adjacent lane near a column, remaining outside the ego path. Farther ahead in the right lane, a white van proceeds at low speed past a section marked for buses, moving roughly parallel to the ego vehicle. No signals are in view and there are no pedestrians or other hazards entering the roadway.", "hazard_reasoning": "There is a red truck slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe distance and avoid a collision with the decelerating vehicle ahead."}
{"id": "train_00227", "split": "train", "clip_key": "2020-0207-151349_019298_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_019298_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_019298_movie_t-3_augB1.jpg", "2020-0207-151349_019298_movie_t-2_augB1.jpg", "2020-0207-151349_019298_movie_t-1_augB1.jpg", "2020-0207-151349_019298_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop to maintain safe following distance", "environment_perception": "An urban three-lane arterial runs between commercial buildings with metal railings and a separated sidewalk; the pavement is dry and traffic is slow in congestion. Directly ahead in the ego lane, a gray box truck slows and inches forward with the queue, constraining the ego vehicle's pace. In the right lane, a black SUV slightly ahead creeps forward at a similar speed while maintaining its lane. In the left lane, a white van just ahead moves with the jam and stays roughly beside the ego car. A cyclist proceeds along the left sidewalk behind the barrier, separated from traffic, and strong sun glare from the upper left reduces visibility.", "hazard_reasoning": "There's a gray truck slowing down, in front of the ego car, in the ego lane, due to traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision in the slowing traffic."}
{"id": "train_00228", "split": "train", "clip_key": "titan_clip_813_000210_movie", "source": {"subset": "titan", "scenario": "clip_813", "frame": "000210"}, "frames": ["titan_clip_813_000210_movie_t-3.jpg", "titan_clip_813_000210_movie_t-2.jpg", "titan_clip_813_000210_movie_t-1.jpg", "titan_clip_813_000210_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way road, no center divider, and smooth pavement shows light traffic. Ahead near the right curb, a dark box truck stands partially in the travel lane. On the left side, a pedestrian wearing black pants and a white T-shirt carries a black handbag and walks away from the ego car along the roadside, remaining at the edge. Another pedestrian on the right by the buildings walks away parallel to traffic and stays close to the wall. Cones, ropes, and parked bicycles line the left margin, narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white t-shirt, carrying a black handbag, and walking on the left side of the road, away from the ego-car. The pedestrian's presence on the roadway poses a risk of stepping into the vehicle's path; the driver should reduce speed."}
{"id": "train_00229", "split": "train", "clip_key": "2020-0226-140503_071920_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "071920"}, "frames": ["2020-0226-140503_071920_movie_t-3.jpg", "2020-0226-140503_071920_movie_t-2.jpg", "2020-0226-140503_071920_movie_t-1.jpg", "2020-0226-140503_071920_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road approaches a signalized intersection with no median; the pavement looks wet and traffic is moderate, currently stopped for a red light. A black sedan is directly ahead in the ego lane, stopped because the signal is red, holding the ego car at the line. A large flatbed truck waits in the adjacent right lane slightly ahead, stationary at the stop line and narrowing the view to the right. A police car crosses the intersection left to right ahead, moving along the cross street while our approach remains red. Two cyclists ride left to right in the crosswalk ahead, finishing their crossing.", "hazard_reasoning": "There is a black Sedan stopped in the ego lane, because of the red traffic light, in front of the ego car. You must stop to avoid a collision with the halted sedan at the red light."}
{"id": "train_00230", "split": "train", "clip_key": "2020-0228-102841_047857_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "047857"}, "frames": ["2020-0228-102841_047857_movie_t-3.jpg", "2020-0228-102841_047857_movie_t-2.jpg", "2020-0228-102841_047857_movie_t-1.jpg", "2020-0228-102841_047857_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road approaches a signalized intersection, with the ego-vehicle in the leftmost curb lane beside a guardrail on smooth pavement; traffic is light and then begins to flow. A gray van directly ahead in the ego lane, previously stopped, accelerates through the intersection when the light changes, setting the pace for the ego-vehicle. Slightly ahead in the next lane to the right, a motor scooter pulls away briskly and continues straight, remaining close to the ego path. In the adjacent right lane, a white microvan moves forward in parallel and edges ahead as it passes through the junction. Overhead signals turn green and no obstacles or work zones are visible.", "hazard_reasoning": "There is a gray van that has been stopped at a traffic light, and begins to accelerate through the intersection when the traffic light changes. As the light turns green and the gray van moves forward, you should accelerate promptly to maintain smooth traffic flow and avoid unexpected stops."}
{"id": "train_00231", "split": "train", "clip_key": "titan_clip_1022_000492_movie", "source": {"subset": "titan", "scenario": "clip_1022", "frame": "000492"}, "frames": ["titan_clip_1022_000492_movie_t-3.jpg", "titan_clip_1022_000492_movie_t-2.jpg", "titan_clip_1022_000492_movie_t-1.jpg", "titan_clip_1022_000492_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "A quiet urban residential street forms a very narrow two-way roadway with no median or centerline; the fresh asphalt is smooth and traffic is light. Ahead on the right, an oncoming cyclist wearing a black shirt rides toward the ego vehicle along the opposing side, edging toward the middle and limiting clearance for the ego path. No same-direction vehicles are present. Parked scooters and bicycles line the right curb in marked bays, and several cars sit in small off-street spaces, narrowing the corridor while remaining outside the lane. No traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a cyclist wearing a black shirt and cycling on the right side of the road, toward the ego car. The cyclist is moving into the ego vehicle's path, so the driver should manoeuvre carefully around them to maintain safety."}
{"id": "train_00232", "split": "train", "clip_key": "titan_clip_701_000408_movie", "source": {"subset": "titan", "scenario": "clip_701", "frame": "000408"}, "frames": ["titan_clip_701_000408_movie_t-3.jpg", "titan_clip_701_000408_movie_t-2.jpg", "titan_clip_701_000408_movie_t-1.jpg", "titan_clip_701_000408_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban shopping street with smooth pavement and no marked centerline has light vehicle traffic and many pedestrians. On the right ahead, a pedestrian in a white T-shirt, brown pants, and a backpack walks away along the road edge because there is no sidewalk. Two other pedestrians are present: one crosses the lane ahead from right to left, and another on the left foreground walks toward the camera while looking at a phone, both close to the ego vehicle's path. A small white truck stands ahead along the left side near storefronts, jutting into the roadway and narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, brown pants, and carrying a backpack, walking at the right side of the road, away from the ego car, because there is no sidewalk. The pedestrian's position on the roadway edge requires the driver to manoeuvre carefully to avoid collision."}
{"id": "train_00233", "split": "train", "clip_key": "2020-0207-101955_084176_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "084176"}, "frames": ["2020-0207-101955_084176_movie_t-3.jpg", "2020-0207-101955_084176_movie_t-2.jpg", "2020-0207-101955_084176_movie_t-1.jpg", "2020-0207-101955_084176_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway ramp with a single left-hand lane runs between tall sound walls and a right-side guardrail; the asphalt is dry and smooth, and traffic is light with only same-direction flow. A blue truck travels ahead in the ego lane, moving away at a steady speed and setting the line of travel. On the right shoulder behind the guardrail, several road workers in high-visibility gear stand by a pole and equipment, stationary and close to the edge but outside the lane, forming a roadside work area. Farther ahead beyond the barriers, a parallel roadway carries occasional vehicles that remain separated and do not affect the ego path.", "hazard_reasoning": "There is a blue truck driving in the ego lane, away from the ego car. Follow the vehicle ahead to maintain a safe distance and reduce collision risk if it brakes suddenly."}
{"id": "train_00234", "split": "train", "clip_key": "2020-0218-103119_020999_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "020999"}, "frames": ["2020-0218-103119_020999_movie_t-3.jpg", "2020-0218-103119_020999_movie_t-2.jpg", "2020-0218-103119_020999_movie_t-1.jpg", "2020-0218-103119_020999_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial lined with high-rise buildings has smooth pavement and moderate traffic queuing at a signal. A white van directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. In the lane to the left, a silver sedan and a boxy truck wait in the same queue with minimal movement. To the right, a small white flatbed truck proceeds slowly in a bollard-separated lane alongside but remains in its lane. Far ahead the traffic signal shows red, and a blue circular sign indicates straight ahead.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of a red traffic light. The stopped vehicle poses a collision risk ahead, so the driver must stop to avoid impact."}
{"id": "train_00235", "split": "train", "clip_key": "2020-0131-103016_058481_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "058481"}, "frames": ["2020-0131-103016_058481_movie_t-3.jpg", "2020-0131-103016_058481_movie_t-2.jpg", "2020-0131-103016_058481_movie_t-1.jpg", "2020-0131-103016_058481_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the stopped vehicle", "environment_perception": "An urban arterial with multiple same-direction lanes runs between mid-rise buildings, with no visible center median, on dry, well?arked asphalt as heavy traffic pulses and often stops. A black van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego car in place. To the right, a white van in the adjacent lane creeps forward with the queue and may edge past the stopped vehicle. Farther right, a line of cars also advances slowly within their lanes, maintaining the jam. On the left sidewalk behind guardrails, several pedestrians walk past storefronts without approaching the roadway. Overhead gantry signs span the street; no traffic signal is in view.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision in the congested traffic."}
{"id": "train_00236", "split": "train", "clip_key": "titan_clip_275_000822_movie", "source": {"subset": "titan", "scenario": "clip_275", "frame": "000822"}, "frames": ["titan_clip_275_000822_movie_t-3.jpg", "titan_clip_275_000822_movie_t-2.jpg", "titan_clip_275_000822_movie_t-1.jpg", "titan_clip_275_000822_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian waiting to cross", "environment_perception": "An urban alley-like two-way street with edge lines and no center divider is shown; the pavement is smooth and traffic is light as the vehicle proceeds toward a small cross street ahead. On the near right, two pedestrians walk along the curb toward the camera, staying at the edge but close to the ego lane and potentially stepping out. No vehicles are immediately ahead or oncoming. A triangular stop sign stands on the left at the intersection. A bicycle is parked against the left-side building, slightly narrowing the margin.", "hazard_reasoning": "There is a short pedestrian carrying a backpack on the left side of the road waiting to cross. Be cautious as the pedestrian may step into the roadway unexpectedly, posing a collision risk."}
{"id": "train_00237", "split": "train", "clip_key": "2020-0213-143552_064623_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "064623"}, "frames": ["2020-0213-143552_064623_movie_t-3.jpg", "2020-0213-143552_064623_movie_t-2.jpg", "2020-0213-143552_064623_movie_t-1.jpg", "2020-0213-143552_064623_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of merging van ahead", "environment_perception": "An urban multi-lane arterial with smooth pavement and a planted median on the right carries slow to moderate same-direction traffic. A black van to the right ahead merges left from the rightmost lane across the hatched area into the ego lane, moving in front and constraining the gap. A large white box truck directly ahead in the center lane proceeds slowly, setting the pace for the queue. A small silver van in the left lane continues straight slightly ahead at a similar speed without affecting the ego vehicle. Overhead blue signs indicate the two left lanes go straight while the right lane permits straight or a right turn.", "hazard_reasoning": "There is a black van lane changing in front of the ego car, from the ego lane to the right lane. The unexpected merge could force sudden evasive action, so the driver should be aware of the merging van to react accordingly."}
{"id": "train_00238", "split": "train", "clip_key": "titan_clip_632_000156_movie", "source": {"subset": "titan", "scenario": "clip_632", "frame": "000156"}, "frames": ["titan_clip_632_000156_movie_t-3.jpg", "titan_clip_632_000156_movie_t-2.jpg", "titan_clip_632_000156_movie_t-1.jpg", "titan_clip_632_000156_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "A narrow urban street with a single shared lane and a green bicycle strip on the right is shown in light traffic; the surface is smooth and there is no median. An oncoming cyclist approaches in the middle of the lane, which constrains the available space. Ahead on the left, several pedestrians walk away along the edge; among them, a man wearing a black T-shirt and black pants walks away from the ego car. A pedestrian on the right proceeds away beside the fence along the green strip, staying near the curb. A convex safety mirror stands on the right, and a parked van sits back in a driveway on the left.", "hazard_reasoning": "There is a man, wearing a black t-shirt and black pants, walking on the left side of the road, away from the ego car. The driver should manoeuvre carefully to maintain a safe distance from the pedestrian while continuing straight."}
{"id": "train_00239", "split": "train", "clip_key": "titan_clip_1115_000348_movie", "source": {"subset": "titan", "scenario": "clip_1115", "frame": "000348"}, "frames": ["titan_clip_1115_000348_movie_t-3.jpg", "titan_clip_1115_000348_movie_t-2.jpg", "titan_clip_1115_000348_movie_t-1.jpg", "titan_clip_1115_000348_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "An urban narrow two-way street with brick paving and no median runs between tall buildings, and traffic is light. The ego vehicle proceeds in the left lane toward an intersection ahead. On the left near the camera, a white truck is stopped at the curb but protrudes into the ego lane, narrowing the path. Along the right edge beside the ego, two pedestrians walk forward close to the travel lane, reducing lateral clearance. Farther ahead at the junction, a white car moves right to left across the street, crossing the ego path.", "hazard_reasoning": "There is a white truck at the left side of the road, cutting into the ego lane. You should yield because the truck's unexpected lane intrusion could force you to brake suddenly or swerve, increasing collision risk."}
{"id": "train_00240", "split": "train", "clip_key": "2020-0129-105040_061887_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061887"}, "frames": ["2020-0129-105040_061887_movie_t-3.jpg", "2020-0129-105040_061887_movie_t-2.jpg", "2020-0129-105040_061887_movie_t-1.jpg", "2020-0129-105040_061887_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "A narrow urban residential street with no median and red-painted edge lanes runs ahead, bounded by bollards on the right; the pavement is dry and traffic is light. Ahead near the right edge, a white mini truck occupies part of the ego lane and moves slowly near the centerline, reducing clearance for the ego vehicle. At the left foreground, a woman waits at the curb beside green posts close to the travel lane and may enter the ego path. Farther ahead on the left, another pedestrian walks toward the camera along the roadside. A pedestrian-priority sign is posted on the right utility pole.", "hazard_reasoning": "There is a white mini truck parked on the right side of the road, in the ego lane. This parked vehicle blocks the driving lane and requires the driver to manoeuvre around it to avoid a collision."}
{"id": "train_00241", "split": "train", "clip_key": "2020-0220-151845_054668_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "054668"}, "frames": ["2020-0220-151845_054668_movie_t-3.jpg", "2020-0220-151845_054668_movie_t-2.jpg", "2020-0220-151845_054668_movie_t-1.jpg", "2020-0220-151845_054668_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs under an elevated viaduct, with a concrete barrier along the left edge; the asphalt looks smooth and traffic moves slowly in congestion. In the ego lane directly ahead, a red flatbed truck with a yellow-covered load slows because traffic stacks up ahead, constraining the ego car's pace. In the adjacent right lane slightly ahead, a black SUV creeps forward parallel to the truck and stays in its lane. Farther ahead in the right lane, a small silver van and several cars queue and advance slowly. Overhead columns narrow sightlines, and there is no oncoming traffic on this divided roadway.", "hazard_reasoning": "There is a red truck slowing in front of the ego car in the ego lane because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a collision while following the slowing truck in congested traffic."}
{"id": "train_00242", "split": "train", "clip_key": "titan_clip_26_000144_movie", "source": {"subset": "titan", "scenario": "clip_26", "frame": "000144"}, "frames": ["titan_clip_26_000144_movie_t-3.jpg", "titan_clip_26_000144_movie_t-2.jpg", "titan_clip_26_000144_movie_t-1.jpg", "titan_clip_26_000144_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street with a single narrow shared lane is paved with bricks, lacks a divider, and carries very light traffic as vehicles edge past parked cars. A man wearing a cap stands just ahead on the left beside a handcart, waiting by the curb in front of the ego-car. Farther ahead, a small white van sits stopped in the lane. A woman walks toward the camera along the right edge, while another person lingers at a vending machine outside the right storefront. Orange barriers line the right side farther ahead, and a silver van is parked close on the left.", "hazard_reasoning": "There is a man wearing a cap, pushing a cart, and waiting, on the left side of the road, in front of the ego-car. The pedestrian may step into the lane unexpectedly, so the driver should reduce speed to maintain safety under this situation."}
{"id": "train_00243", "split": "train", "clip_key": "2020-0210-155354_017952_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-155354_017952_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-155354_017952_movie_t-3_augB1.jpg", "2020-0210-155354_017952_movie_t-2_augB1.jpg", "2020-0210-155354_017952_movie_t-1_augB1.jpg", "2020-0210-155354_017952_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of motorcycle ahead", "environment_perception": "An urban two-lane two-way street leads to a signalized intersection, with smooth pavement and light traffic as the ego car proceeds in the left lane. A black motorcycle rides ahead in the ego lane and continues straight through the intersection, modestly accelerating and setting the ego vehicle's pace. A scooter approaches in the oncoming lane near the center of the intersection and proceeds past without entering the ego lane. A pedestrian stands on the right corner by the crosswalk, stationary and not stepping into the road. Bicycles are parked along the left sidewalk and buildings closely line both sides, but no obstacles encroach on the carriageway.", "hazard_reasoning": "There is a black motorcycle driving in front of the ego car in the ego lane. The motorcycle may slow unexpectedly, so the driver should stay alert and be prepared to adjust speed to maintain a safe following distance."}
{"id": "train_00244", "split": "train", "clip_key": "titan_clip_1121_000084_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1121_000084_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1121_000084_movie_t-3_augB1.jpg", "titan_clip_1121_000084_movie_t-2_augB1.jpg", "titan_clip_1121_000084_movie_t-1_augB1.jpg", "titan_clip_1121_000084_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban residential two-way road without a centerline curves gently right; the pavement is smooth and traffic is light. A cyclist in a checkered shirt ahead crosses the roadway from the left to the right in front of the ego vehicle, moving through its path. Farther ahead near the bend, a white passenger car in the opposing lane waits facing the ego, remaining clear of the ego lane on the tight street. Close buildings and the right-hand curve create limited forward visibility.", "hazard_reasoning": "There is a cyclist wearing a checkered shirt, crossing the street to the right side, in front of the ego car. The cyclist may enter the vehicle's path unexpectedly, so the driver should reduce speed to avoid a collision."}
{"id": "train_00245", "split": "train", "clip_key": "2020-0228-150133_048072_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "048072"}, "frames": ["2020-0228-150133_048072_movie_t-3.jpg", "2020-0228-150133_048072_movie_t-2.jpg", "2020-0228-150133_048072_movie_t-1.jpg", "2020-0228-150133_048072_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs between mid-rise buildings with two same-direction lanes on the left and oncoming lanes to the right, separated by a narrow painted median with double white lines; the pavement is smooth and traffic is heavy and stop-and-go. A black sedan is stopped immediately ahead in the ego lane because of congestion and holds the ego vehicle at a standstill. In the adjacent lane to the left, a white hatchback waits nearly abreast and inches forward with the queue, constraining any lane change. On the opposite carriageway to the right, a black van followed by a white minivan proceeds toward the camera at low speed in their lanes, separated from the ego path.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop promptly to avoid a collision with the halted vehicle in congested traffic."}
{"id": "train_00246", "split": "train", "clip_key": "2020-0210-101957_085523_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "085523"}, "frames": ["2020-0210-101957_085523_movie_t-3.jpg", "2020-0210-101957_085523_movie_t-2.jpg", "2020-0210-101957_085523_movie_t-1.jpg", "2020-0210-101957_085523_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential scene shows a two-lane two-way road with a solid yellow center line, hatched shoulder markings, and smooth pavement; traffic is light as the road gently descends. A brown truck ahead in the ego lane continues straight and gradually pulls away because the road ahead is clear. No oncoming vehicles are near and no one merges from side streets, leaving the opposite lane open. A convex mirror on the left and small orange posts mark the roadside, and no obstacles intrude into the ego lane.", "hazard_reasoning": "There is a brown truck driving away from the ego car, in the ego lane in front of the ego car, because the road ahead is clear. The incline and clear road may encourage the truck to brake suddenly or reduce speed unexpectedly, so the driver should stay alert and maintain a safe distance."}
{"id": "train_00247", "split": "train", "clip_key": "2020-0213-143552_082797_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "082797"}, "frames": ["2020-0213-143552_082797_movie_t-3.jpg", "2020-0213-143552_082797_movie_t-2.jpg", "2020-0213-143552_082797_movie_t-1.jpg", "2020-0213-143552_082797_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway with two same-direction lanes runs between high sound barriers and an elevated structure, curving gently right; the pavement is smooth and traffic is light. A blue truck ahead in the left lane drives away from the ego car, maintaining its lane along the curve and leading the vehicle stream we follow. No other moving vehicles are visible. Overhead guide boards indicate upcoming routes and show 300 m to a split. Concrete barriers line the right shoulder and a narrow curb borders the roadway, with no obstacles in the travel lanes.", "hazard_reasoning": "There is a blue truck driving in the left lane, away from the ego car. The truck may merge into your lane or obscure your view, so you should be aware of its movements and anticipate possible lane changes."}
{"id": "train_00248", "split": "train", "clip_key": "2020-0131-135401_040918_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "040918"}, "frames": ["2020-0131-135401_040918_movie_t-3.jpg", "2020-0131-135401_040918_movie_t-2.jpg", "2020-0131-135401_040918_movie_t-1.jpg", "2020-0131-135401_040918_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop due to congestion ahead", "environment_perception": "An urban commercial street carries two-way traffic with two same-direction lanes toward a signalized intersection, the pavement smooth and flow slow with a short queue. A white hatchback directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle in place. Slightly farther ahead to the left, a red minivan also waits in the neighboring lane, adding to the queue. Oncoming vehicles pass steadily in the opposite lane to the right and remain separate from the ego path. A traffic light above the junction shows red, keeping vehicles stationary.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane because of traffic congestion ahead. You must stop to avoid colliding with the halted vehicle in the congestion."}
{"id": "train_00249", "split": "train", "clip_key": "titan_clip_1391_000588_movie", "source": {"subset": "titan", "scenario": "clip_1391", "frame": "000588"}, "frames": ["titan_clip_1391_000588_movie_t-3.jpg", "titan_clip_1391_000588_movie_t-2.jpg", "titan_clip_1391_000588_movie_t-1.jpg", "titan_clip_1391_000588_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street in Japan runs ahead as a single undivided lane with worn but intact pavement and very light traffic. In the ego lane ahead, a silver van is stopped and blocks the path. Near the right edge ahead, a man with a bicycle pauses partly in the lane beside a shop, potentially edging toward the ego vehicle's path. Closer on the left, a pedestrian steps from the storefront edge and slows near the curb, possibly prompting brief yielding. Parked bicycles and freestanding signboards line both sides and further constrict the roadway.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car. The driver should slow down because a stopped vehicle ahead can cause a collision if approached at speed."}
{"id": "train_00250", "split": "train", "clip_key": "2020-0131-135401_003863_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003863"}, "frames": ["2020-0131-135401_003863_movie_t-3.jpg", "2020-0131-135401_003863_movie_t-2.jpg", "2020-0131-135401_003863_movie_t-1.jpg", "2020-0131-135401_003863_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one narrow lane per direction runs between low-rise buildings, the pavement smooth and dry, and overall traffic light. A white box truck is stopped directly ahead in the ego left lane, blocking the path and causing the ego car to slow; a short raised curb along the left edge and a guardrail on the right leave limited space to pass. Two pedestrians on the left sidewalk ahead walk away from the camera beside the truck and are not entering the roadway. No oncoming vehicles are visible in the right lane. An overhead circular sign shows 40, and strong sun glare from the right brightens the scene.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The truck's unexpected stop poses a collision risk, so you should stop immediately to maintain safety."}
{"id": "train_00251", "split": "train", "clip_key": "2020-0212-102546_076500_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "076500"}, "frames": ["2020-0212-102546_076500_movie_t-3.jpg", "2020-0212-102546_076500_movie_t-2.jpg", "2020-0212-102546_076500_movie_t-1.jpg", "2020-0212-102546_076500_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene shows a two-lane road with traffic moving in the same direction, a planted median on the right separating oncoming lanes, smooth pavement, and light overall flow. A yellow construction truck travels ahead in the ego lane and slows toward a stop because there is a red traffic light up the road, so it sets the ego vehicle's pace. A white box truck stands at the left curb near shops, waiting at the side and potentially merging after the light changes. No other moving vehicles appear close to the ego lane.", "hazard_reasoning": "There is a yellow truck slowing in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should slow down to maintain a safe following distance and avoid a collision with the decelerating truck."}
{"id": "train_00252", "split": "train", "clip_key": "titan_clip_438_000588_movie", "source": {"subset": "titan", "scenario": "clip_438", "frame": "000588"}, "frames": ["titan_clip_438_000588_movie_t-3.jpg", "titan_clip_438_000588_movie_t-2.jpg", "titan_clip_438_000588_movie_t-1.jpg", "titan_clip_438_000588_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the silver sedan", "environment_perception": "A narrow urban shopping street with a single shared lane and block-paved surface has no divider and light vehicle flow amid steady pedestrian activity. A silver sedan is stopped on the left in the ego lane with its hatch open as it is being unloaded, partially blocking the lane and constraining the ego vehicle's pace. Ahead in the center of the lane, a pedestrian walks away from the camera, moving slowly along the path and may impede progress. Beside the sedan on the left, another person handles bags near the curb and edges toward the lane, which may enter the ego path. Farther ahead several pedestrians continue along the street, and no opposing vehicles or traffic signals are visible.", "hazard_reasoning": "There is a silver sedan stopped on the left side of the road, because it is being unloaded, in the ego lane. The stopped vehicle obstructs the ego lane, requiring the driver to manoeuvre carefully around it to avoid collision."}
{"id": "train_00253", "split": "train", "clip_key": "2020-0217-110854_044298_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "044298"}, "frames": ["2020-0217-110854_044298_movie_t-3.jpg", "2020-0217-110854_044298_movie_t-2.jpg", "2020-0217-110854_044298_movie_t-1.jpg", "2020-0217-110854_044298_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multilane arterial beneath an elevated expressway shows smooth pavement, guardrails, and moderate flow that compresses ahead. A black SUV directly in front in the ego lane slows and gradually pulls away because of congestion further forward. A white minivan in the adjacent right lane holds a steady pace slightly ahead, constraining an easy lane change. Farther ahead along the left curb lane, several vehicles queue and crawl, creating a slow line near the shoulder. An overhead electronic board displays a message including 20 minutes, and directional signs for expressway exits hang from the same gantry. No obstacles are present in the travel lanes.", "hazard_reasoning": "There is a black SUV slowing in front of the ego car, moving away from the ego car, in the ego lane, because of traffic congestion ahead. The black SUV is decelerating due to congestion ahead; maintain a safe following distance and adjust speed accordingly to avoid sudden braking."}
{"id": "train_00254", "split": "train", "clip_key": "2020-0204-150838_071235_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "071235"}, "frames": ["2020-0204-150838_071235_movie_t-3.jpg", "2020-0204-150838_071235_movie_t-2.jpg", "2020-0204-150838_071235_movie_t-1.jpg", "2020-0204-150838_071235_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated expressway with three same-direction lanes and a concrete right-side barrier curves gently right; the pavement is smooth and traffic is moderate. A red container truck moves ahead in the ego lane and sets the pace for the ego car. In the adjacent left lane, a white delivery van travels alongside at similar speed, reducing space for an immediate lane change. Farther ahead in the left lanes, a gray truck and a white box truck proceed steadily toward the curve, keeping a compact flow. A round roadside sign on the right shows a 50 speed limit.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00255", "split": "train", "clip_key": "titan_clip_314_000162_movie", "source": {"subset": "titan", "scenario": "clip_314", "frame": "000162"}, "frames": ["titan_clip_314_000162_movie_t-3.jpg", "titan_clip_314_000162_movie_t-2.jpg", "titan_clip_314_000162_movie_t-1.jpg", "titan_clip_314_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down and watch for pedestrian in roadway", "environment_perception": "A narrow urban back street with a single mixed-traffic lane is paved with blocks, lacks a center divider, and shows light vehicular flow with no cars ahead. Several pedestrians are in the roadway ahead moving away from the camera; among them, a tall man in a white shirt and black pants carries a backpack and walks in the middle because there is no clear sidewalk, so the group controls the ego vehicle's pace. A person stands at the left curb near a parking lot entrance and may step into the lane, making them relevant to the path. Another pedestrian on the right walks along the building edge in the same direction and stays near the side. Parking notices and storefront signs are visible, and a single cone sits on the right margin without blocking the lane.", "hazard_reasoning": "There is a tall man, wearing a white shirt and black pants, carrying a backpack, walking in the middle of the road, away from the ego car, because there is no sidewalk. As he walks in the roadway due to lack of sidewalk, the driver should slow down to avoid a collision."}
{"id": "train_00256", "split": "train", "clip_key": "2020-0129-105040_006171_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-105040_006171_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-105040_006171_movie_t-3_augB1.jpg", "2020-0129-105040_006171_movie_t-2_augB1.jpg", "2020-0129-105040_006171_movie_t-1_augB1.jpg", "2020-0129-105040_006171_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way road without a median runs between mid-rise buildings, the pavement dry and in good condition, with moderate traffic. A white box truck directly ahead in the ego lane slows, constraining the ego vehicle's speed. To the right, two oncoming trucks proceed in their lanes, remaining outside the ego path. Farther ahead near the right edge, a small oncoming van moves steadily along its lane with no interaction. An overhead blue guide sign spans the roadway ahead.", "hazard_reasoning": "There is a white truck, slowing, in front of the ego car, in the ego lane. Because the truck is slowing down, the driver should reduce speed to maintain a safe following distance."}
{"id": "train_00257", "split": "train", "clip_key": "2020-0228-150133_069460_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "069460"}, "frames": ["2020-0228-150133_069460_movie_t-3.jpg", "2020-0228-150133_069460_movie_t-2.jpg", "2020-0228-150133_069460_movie_t-1.jpg", "2020-0228-150133_069460_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid hitting the stopped sedan.", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection with no physical median; the pavement looks dry and intact, and same-direction traffic is queued and stationary at the stop line. On the far side, oncoming traffic also waits beyond the crosswalks. A black sedan directly ahead in the ego lane is stopped, holding the ego vehicle because the traffic light ahead shows red. A white van slightly ahead in the adjacent lane to the left is also stopped alongside.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane, because of a red traffic light ahead. Stop immediately to avoid hitting the stopped sedan."}
{"id": "train_00258", "split": "train", "clip_key": "2020-0205-103411_057413_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "057413"}, "frames": ["2020-0205-103411_057413_movie_t-3.jpg", "2020-0205-103411_057413_movie_t-2.jpg", "2020-0205-103411_057413_movie_t-1.jpg", "2020-0205-103411_057413_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane roadway with a left-side barrier and smooth pavement approaches a junction, and traffic is moderate with a slight slowdown near the signs. A white box truck ahead in the ego lane moves steadily away from the camera, effectively setting the ego vehicle's pace. To the right, a queue of cars in the adjacent lane creeps forward for a right turn at the intersection, running parallel to the ego car. Farther ahead in that right-turn lane, a white van inches along with the queue without encroaching into the ego lane. Overhead blue direction signs indicate the left lanes continue straight while the right lanes are designated for right turns.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00259", "split": "train", "clip_key": "2020-0131-135401_066985_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "066985"}, "frames": ["2020-0131-135401_066985_movie_t-3.jpg", "2020-0131-135401_066985_movie_t-2.jpg", "2020-0131-135401_066985_movie_t-1.jpg", "2020-0131-135401_066985_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban steel-truss bridge carries a multi-lane same-direction roadway with guardrails and planters on the left; the pavement looks smooth and traffic is light to moderate with steady flow. A box truck ahead in the adjacent middle lane travels at a constant speed alongside the ego lane and does not constrain the ego vehicle. A white van slightly ahead in the right lane continues straight, remaining separate from the ego lane. Farther ahead, a dark passenger car proceeds in its lane with a large gap to others. An overhead gantry sign is visible in the distance, with no active signals apparent.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00260", "split": "train", "clip_key": "titan_clip_904_000594_movie", "source": {"subset": "titan", "scenario": "clip_904", "frame": "000594"}, "frames": ["titan_clip_904_000594_movie_t-3.jpg", "titan_clip_904_000594_movie_t-2.jpg", "titan_clip_904_000594_movie_t-1.jpg", "titan_clip_904_000594_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of the traffic controller", "environment_perception": "An urban neighborhood scene on a narrow two-way street without a centerline approaches a signalized intersection with a broad zebra crossing; the pavement is smooth and traffic is light with few moving vehicles. On the right shoulder near the corner, a man wearing a safety vest stands with a traffic baton and directs traffic, drawing the ego-vehicle's attention at the junction. Ahead across the intersection on the left, a white van is stopped at the curb, remaining static and not impeding the lane. Farther left along the cross street, additional parked vehicles line the curb. Overhead traffic signals hang above the cross street but their aspects are not clearly visible.", "hazard_reasoning": "There is a man wearing a safety vest, standing on the right side of the road, and directing traffic with a traffic baton. Drivers should be aware that the traffic controller may step into the roadway or change traffic flow, requiring caution."}
{"id": "train_00261", "split": "train", "clip_key": "titan_clip_7_000030_movie", "source": {"subset": "titan", "scenario": "clip_7", "frame": "000030"}, "frames": ["titan_clip_7_000030_movie_t-3.jpg", "titan_clip_7_000030_movie_t-2.jpg", "titan_clip_7_000030_movie_t-1.jpg", "titan_clip_7_000030_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked SUV", "environment_perception": "An urban two-way street with one lane per direction, no median, and smooth pavement runs straight between mid-rise buildings and roadside trees; traffic is light. A black SUV is parked along the left curb beside the ego lane, slightly narrowing the near margin but remaining stationary. An oncoming white van advances in the right lane toward the camera and passes while keeping its line. Far ahead in the same left lane, a small minibus travels away from the ego vehicle at a steady pace. A pedestrian is on the right sidewalk near the curb, moving along the edge without stepping into the roadway.", "hazard_reasoning": "There is a black SUV parked on the left side of the road. Manoeuvre around the parked SUV because it partially blocks your view of oncoming traffic and other potential hazards."}
{"id": "train_00262", "split": "train", "clip_key": "2020-0206-101736_014037_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "014037"}, "frames": ["2020-0206-101736_014037_movie_t-3.jpg", "2020-0206-101736_014037_movie_t-2.jpg", "2020-0206-101736_014037_movie_t-1.jpg", "2020-0206-101736_014037_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban two-way street with one narrow lane in each direction and no median runs between storefronts; the pavement is smooth and traffic is light as the road gently climbs. Ahead in the left lane, a small delivery truck is stopped along the curb while a worker stands near its rear handling crates, narrowing the ego lane and constraining pace. On the right edge near the camera, a pedestrian in black clothing carrying a handbag walks toward the vehicle along the roadway where there is no sidewalk and may encroach on the travel lane. The oncoming lane remains mostly clear.", "hazard_reasoning": "There is a pedestrian wearing black pants, a black shirt, and carrying a handbag, walking on the right side of the road, toward the ego car, because there is no sidewalk. You should be aware of their presence and prepared to slow or steer to avoid a potential collision."}
{"id": "train_00263", "split": "train", "clip_key": "2020-0207-151349_058707_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "058707"}, "frames": ["2020-0207-151349_058707_movie_t-3.jpg", "2020-0207-151349_058707_movie_t-2.jpg", "2020-0207-151349_058707_movie_t-1.jpg", "2020-0207-151349_058707_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs through mid-rise buildings with dry, even pavement and heavy same-direction traffic compressing into a slow queue ahead. A silver sedan directly ahead in the ego lane slows because of congestion ahead, constraining the ego car's pace. A white minivan slightly farther ahead to the right creeps forward in the adjacent lane and may merge toward the ego lane as gaps appear. A cyclist rides along the left curb near the ego vehicle, proceeding straight with limited space and close to the travel lane.", "hazard_reasoning": "There is a silver sedan slowing down in the ego lane in front of the ego car, because of traffic congestion ahead. This indicates queuing traffic further ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_00264", "split": "train", "clip_key": "2020-0127-132751_082577_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "082577"}, "frames": ["2020-0127-132751_082577_movie_t-3.jpg", "2020-0127-132751_082577_movie_t-2.jpg", "2020-0127-132751_082577_movie_t-1.jpg", "2020-0127-132751_082577_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban divided road with two lanes in the ego direction runs straight with a low concrete median and smooth pavement; traffic appears light to moderate and remains steady. A green truck ahead in the ego lane slows, so the ego car follows behind at its pace. An oncoming small box truck travels toward the camera in the opposite lanes to the right of the median, continuing straight without changing lanes. Two pedestrians on the right sidewalk walk along the curb near a storefront, staying off the roadway and not affecting the lane.", "hazard_reasoning": "There is a green truck slowing in front of the ego car, in the ego lane. The truck's reduced speed may require the driver to decelerate and maintain a safe following distance to avoid a collision."}
{"id": "train_00265", "split": "train", "clip_key": "2020-0131-135401_004638_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "004638"}, "frames": ["2020-0131-135401_004638_movie_t-3.jpg", "2020-0131-135401_004638_movie_t-2.jpg", "2020-0131-135401_004638_movie_t-1.jpg", "2020-0131-135401_004638_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane road with a single centerline and no median runs beside low-rise buildings; the pavement looks smooth and traffic is light, with the oncoming lane clear. A white truck is stopped directly ahead in the ego lane, blocking the path and constraining the ego car's pace. On the left sidewalk, three pedestrians walk toward the camera along the curb, continuing on the walkway and not entering the road. Farther ahead on the left, another person walks away along the same sidewalk. An overhead circular sign shows 40, and bright sun from the right causes glare and long shadows.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. Stop to avoid a collision with the stationary truck ahead."}
{"id": "train_00266", "split": "train", "clip_key": "2020-0225-102455_065631_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "065631"}, "frames": ["2020-0225-102455_065631_movie_t-3.jpg", "2020-0225-102455_065631_movie_t-2.jpg", "2020-0225-102455_065631_movie_t-1.jpg", "2020-0225-102455_065631_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction approaches a signalized intersection with a zebra crossing; the pavement is smooth and dry and traffic is light. A pedestrian waits at the left curb beside the crosswalk ahead and may step into the ego lane. A cyclist on the right side rolls toward the curb ramp to the crossing and could enter the ego path. An oncoming white van beyond the junction approaches the intersection and may proceed through before the ego vehicle. Several police cars are parked along the right corner, reducing available shoulder space near the intersection.", "hazard_reasoning": "There are no visible obstacles or sudden changes in traffic behavior, and the green signal allows the driver to proceed safely under clear conditions."}
{"id": "train_00267", "split": "train", "clip_key": "2020-0228-150133_042561_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "042561"}, "frames": ["2020-0228-150133_042561_movie_t-3.jpg", "2020-0228-150133_042561_movie_t-2.jpg", "2020-0228-150133_042561_movie_t-1.jpg", "2020-0228-150133_042561_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way arterial has two lanes in the ego direction with a hatched painted median separating oncoming traffic; the pavement is smooth and traffic is heavy and slow. A gray sedan is stopped directly ahead in the ego lane and holds the ego vehicle at a standstill. In the adjacent left lane, a line of small vans and cars is also stopped or creeping along the curb, limiting any overtaking. To the right beyond the median, oncoming cars travel steadily toward the camera with clear gaps. Blue overhead guide signs and roadside no-parking signs are visible, and no signal aspect is apparent.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego car, in the ego lane. You should stop immediately to avoid a collision with the stationary vehicle ahead."}
{"id": "train_00268", "split": "train", "clip_key": "titan_clip_548_000318_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_548_000318_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_548_000318_movie_t-3_augB1.jpg", "titan_clip_548_000318_movie_t-2_augB1.jpg", "titan_clip_548_000318_movie_t-1_augB1.jpg", "titan_clip_548_000318_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban side street with a single narrow lane and no median runs between tall buildings; the pavement is smooth and motor traffic is very light with no vehicles visible. Two pedestrians carrying backpacks walk ahead in the middle of the lane away from the ego car, occupying the travel path and constraining its pace. A pedestrian on the right edge walks toward the camera along the curb, remaining outside the lane. At the left crosswalk area, a small group with a stroller moves along the curb and may enter the lane. Street signs on the left indicate a pedestrian zone and a no-parking restriction, and a pedestrian crossing sign is posted.", "hazard_reasoning": "There are two pedestrians carrying backpacks and walking in the middle of the road, away from the ego car. The driver should slow down because the pedestrians are occupying the driving lane and may not move aside promptly, increasing collision risk."}
{"id": "train_00269", "split": "train", "clip_key": "2020-0205-103411_088497_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "088497"}, "frames": ["2020-0205-103411_088497_movie_t-3.jpg", "2020-0205-103411_088497_movie_t-2.jpg", "2020-0205-103411_088497_movie_t-1.jpg", "2020-0205-103411_088497_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a painted median and smooth pavement runs through a commercial district; traffic is moderate, initially queued and then begins to move. Ahead in the ego lane, a white hatchback starts to pull away because the signal ahead is green, leading the ego vehicle forward. Farther ahead in the same lane, a dark truck rolls off more slowly and constrains the pace. In the adjacent lane to the left, a white minivan accelerates past while staying parallel to the ego path. Oncoming cars flow steadily on the right-side lanes, and no obstacles or work zones are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00270", "split": "train", "clip_key": "titan_clip_720_000468_movie", "source": {"subset": "titan", "scenario": "clip_720", "frame": "000468"}, "frames": ["titan_clip_720_000468_movie_t-3.jpg", "titan_clip_720_000468_movie_t-2.jpg", "titan_clip_720_000468_movie_t-1.jpg", "titan_clip_720_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "A quiet urban neighborhood appears on a narrow two-way road without a centerline or median; the pavement is smooth and dry, and traffic is absent in both directions. Ahead on the right edge, two pedestrians-one wearing a black shirt with beige pants and the other in black pants-move slowly along the curb where there is no defined sidewalk, staying close to the travel lane and potentially entering the ego lane. No other vehicles or cyclists appear, so the pace is unconstrained. Cones and short bollards line the left side, and a bicycle is parked by a storefront on the right.", "hazard_reasoning": "There are two pedestrian, one wearing black shirt and beige pants, the other wearing black pant, standing on the right side of the road because there is no sidewalk. The driver should carefully manoeuvre around the pedestrians since they are close to the roadway edge and may step onto the road unexpectedly."}
{"id": "train_00271", "split": "train", "clip_key": "2020-0212-102546_051986_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "051986"}, "frames": ["2020-0212-102546_051986_movie_t-3.jpg", "2020-0212-102546_051986_movie_t-2.jpg", "2020-0212-102546_051986_movie_t-1.jpg", "2020-0212-102546_051986_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction is separated from oncoming lanes by a low shrub median. The pavement is dry and smooth, and traffic in the ego direction moves slowly in a short queue. A silver van immediately ahead in the ego lane slows and inches forward because of congestion, directly controlling the ego car's pace. Farther ahead, several same-direction vehicles line up and crawl, limiting progress. An overhead blue directional sign lists destinations and guidance about 150 m ahead.", "hazard_reasoning": "There is a silver van slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe distance and prevent a collision as traffic ahead is congested."}
{"id": "train_00272", "split": "train", "clip_key": "2020-0225-102455_002251_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "002251"}, "frames": ["2020-0225-102455_002251_movie_t-3.jpg", "2020-0225-102455_002251_movie_t-2.jpg", "2020-0225-102455_002251_movie_t-1.jpg", "2020-0225-102455_002251_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement carries moderate but free-flowing same-direction traffic, with no physical median and double solid white lines separating lanes. A white van ahead in the ego lane drives away from the ego car as traffic is uncongested, gradually opening the gap. To the right, a white minibus in the adjacent lane moves slightly faster and continues straight without shifting lanes. A motorcyclist ahead near the divider filters forward between lanes beside the van, close to the ego vehicle's path. Farther ahead on the left shoulder, a box truck is stopped partly within the outer lane, narrowing the roadside space.", "hazard_reasoning": "There is a white van driving away from the ego car, in the ego lane in front of the ego car, because there is no traffic congestion. The driver should follow the vehicle ahead to maintain a safe distance and be prepared for unexpected braking."}
{"id": "train_00273", "split": "train", "clip_key": "2020-0217-110854_029706_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "029706"}, "frames": ["2020-0217-110854_029706_movie_t-3.jpg", "2020-0217-110854_029706_movie_t-2.jpg", "2020-0217-110854_029706_movie_t-1.jpg", "2020-0217-110854_029706_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial leads into a wide signalized intersection with good pavement and heavy traffic; same-direction lanes are stopped while cross traffic flows through. Ahead at the crosswalk, a pedestrian wearing a backpack and skirt crosses from right to left toward the left side of the road, proceeding in front of the ego because the traffic light is red. Other pedestrians also traverse the crosswalk from both sides, continuing across the ego lane while the vehicle waits. On the cross street, a white truck and other vehicles move right to left through the junction. Several cars queue in the ego's direction beyond the intersection, waiting for the signal.", "hazard_reasoning": "There is a pedestrian wearing a backpack and skirt, crossing at the pedestrian crosswalk to the left side of the road, because of the red traffic light. You should stop to yield to the pedestrian and avoid a collision."}
{"id": "train_00274", "split": "train", "clip_key": "2020-0203-154554_029182_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "029182"}, "frames": ["2020-0203-154554_029182_movie_t-3.jpg", "2020-0203-154554_029182_movie_t-2.jpg", "2020-0203-154554_029182_movie_t-1.jpg", "2020-0203-154554_029182_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban arterial with several same-direction lanes runs beneath high-rises and an elevated roadway; the pavement is dry and smooth, and traffic is heavy and slow. Directly ahead in the ego lane, a white flatbed truck with rear ramps slows in queue due to congestion, setting the ego vehicle's pace. In the adjacent right lane, a white van inches forward alongside, keeping close and limiting any opportunity to move right. In the left neighboring lane, another small white van slightly ahead rolls with the slow flow and could block a shift to the left.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to match the truck's reduced speed and maintain a safe following distance to avoid a collision."}
{"id": "train_00275", "split": "train", "clip_key": "titan_clip_495_000108_movie", "source": {"subset": "titan", "scenario": "clip_495", "frame": "000108"}, "frames": ["titan_clip_495_000108_movie_t-3.jpg", "titan_clip_495_000108_movie_t-2.jpg", "titan_clip_495_000108_movie_t-1.jpg", "titan_clip_495_000108_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-lane road with a solid centerline and smooth pavement runs between buildings and trees, bordered by metal railings, and traffic is light. Ahead in the ego lane, a pedestrian wearing blue pants and a reflective vest stands in the middle of the road directing traffic, controlling the ego vehicle's approach. Just beyond him, a white truck is stopped near the center of the roadway in the same direction, partially narrowing the path. The oncoming lane stays clear with no vehicles approaching. Overhead signs on a gantry include a posted speed limit of 40 and a red-bordered prohibition sign.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a reflective vest, standing in the middle of the road, directing traffic. The driver should stop because the pedestrian is directing traffic from the center of the road and could step into the vehicle's path, requiring immediate compliance to avoid collision."}
{"id": "train_00276", "split": "train", "clip_key": "2020-0210-101957_073169_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "073169"}, "frames": ["2020-0210-101957_073169_movie_t-3.jpg", "2020-0210-101957_073169_movie_t-2.jpg", "2020-0210-101957_073169_movie_t-1.jpg", "2020-0210-101957_073169_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the oncoming black van.", "environment_perception": "A suburban two-way road with a single narrow lane each way has smooth pavement and curves gently right; traffic is light. A black van ahead in the opposing lane travels toward the ego car and encroaches slightly into the ego lane. At a driveway on the left, a white minivan stands at the edge of the lot and may merge into the ego lane. The right side is bordered by a close metal fence.", "hazard_reasoning": "There is a black van driving in the ego lane, toward the ego car. The oncoming van encroaches on the ego lane, posing a collision risk that warrants caution."}
{"id": "train_00277", "split": "train", "clip_key": "2020-0131-135401_048414_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "048414"}, "frames": ["2020-0131-135401_048414_movie_t-3.jpg", "2020-0131-135401_048414_movie_t-2.jpg", "2020-0131-135401_048414_movie_t-1.jpg", "2020-0131-135401_048414_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban elevated road with a single lane in the ego vehicle's direction curves gently right, bounded by guardrails and a concrete median that separates oncoming traffic; the pavement is dry and traffic is heavy and stop-and-go. A white hatchback directly ahead in the ego lane is stopped because of congestion, blocking the ego vehicle's path. Farther ahead, several cars and a small box truck queue in the same lane, inching forward and stopping, continuing the jam that constrains progress. On the opposite carriageway to the right beyond the median, a few oncoming vehicles move steadily and remain separated.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane because of traffic congestion ahead. Because the hatchback is stopped due to congestion, the driver must stop to avoid a rear-end collision."}
{"id": "train_00278", "split": "train", "clip_key": "2020-0131-103016_018433_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "018433"}, "frames": ["2020-0131-103016_018433_movie_t-3.jpg", "2020-0131-103016_018433_movie_t-2.jpg", "2020-0131-103016_018433_movie_t-1.jpg", "2020-0131-103016_018433_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane intersection with smooth pavement and no median lies ahead, and traffic is moderate with vehicles moving steadily. A white hatchback ahead in the ego lane turns right in the middle of the intersection, crossing our path and constraining our progress. Two dark sedans slightly left ahead proceed through the junction in adjacent lanes, one curving left, but they remain out of the ego lane. Oncoming cars beyond the intersection approach in their opposite lanes at low speed. A cluster of pedestrians stands on the right sidewalk beside the crosswalk, waiting.", "hazard_reasoning": "There is a white hatchback turning right in the ego lane, in the middle of the intersection. Because the hatchback is encroaching into your lane, the driver should follow the vehicle ahead to maintain a safe gap and avoid collision."}
{"id": "train_00279", "split": "train", "clip_key": "2020-0207-101955_030922_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "030922"}, "frames": ["2020-0207-101955_030922_movie_t-3.jpg", "2020-0207-101955_030922_movie_t-2.jpg", "2020-0207-101955_030922_movie_t-1.jpg", "2020-0207-101955_030922_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection with a planted median and smooth pavement is ahead, and traffic is light as the ego vehicle approaches from the left-side lane. A white truck drives through the middle of the intersection toward the right, crossing ahead and occupying the path the ego vehicle would take if proceeding. Several pedestrians wait on the left corner by the zebra crossing at the edge of the ego lane, close to the roadway but remaining on the curb. Farther beyond the junction, a few cars travel away in the same direction on the near side of the median while sparse oncoming traffic moves toward the camera on the far side. Bright sunlight from the right introduces some glare near the buildings.", "hazard_reasoning": "There is a white truck driving in the middle of the intersection, to the right side. The white truck is positioned in the intersection and may merge into the ego-vehicle's path, so the driver should stop to avoid a potential collision."}
{"id": "train_00280", "split": "train", "clip_key": "titan_clip_1248_000276_movie", "source": {"subset": "titan", "scenario": "clip_1248", "frame": "000276"}, "frames": ["titan_clip_1248_000276_movie_t-3.jpg", "titan_clip_1248_000276_movie_t-2.jpg", "titan_clip_1248_000276_movie_t-1.jpg", "titan_clip_1248_000276_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with a single narrow lane and no median curves slightly left; pavement looks smooth and vehicular flow is light amid heavy foot traffic. A delivery truck is stopped at the left curb just ahead while workers unload crates from its rear, protruding slightly into the lane and narrowing the passage. A cyclist travels ahead near the right edge by the bollards in the same direction at low speed, which constrains the ego vehicle's pace. Two pedestrians on the right sidewalk walk close to the curb, moving parallel to traffic near the bollards. More pedestrians stand farther ahead by storefronts on the left but stay off the roadway. No traffic signals or posted speed signs are clearly visible.", "hazard_reasoning": "No hazards detected. The scene appears clear aside from the parked truck, so the driver can proceed normally."}
{"id": "train_00281", "split": "train", "clip_key": "2020-0205-152530_011571_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "011571"}, "frames": ["2020-0205-152530_011571_movie_t-3.jpg", "2020-0205-152530_011571_movie_t-2.jpg", "2020-0205-152530_011571_movie_t-1.jpg", "2020-0205-152530_011571_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with at least two same-direction lanes runs between office buildings, with a left-side guardrail and dry but sun-glared pavement; traffic is heavy and slow. A black SUV directly ahead in the ego lane is stopped as a red signal holds the queue. In the adjacent right lane slightly ahead, a small white truck creeps forward, continuing straight and moving past the stopped queue. A dark van along the far-right lane advances slowly alongside the ego vehicle, reducing space for a lane change. Overhead traffic lights span the intersection ahead, partly washed out by glare, and no unusual obstacles are visible.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, because of the red traffic lights. The driver should stop immediately to avoid colliding with the stationary vehicle at the red light."}
{"id": "train_00282", "split": "train", "clip_key": "2020-0203-154554_007601_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "007601"}, "frames": ["2020-0203-154554_007601_movie_t-3.jpg", "2020-0203-154554_007601_movie_t-2.jpg", "2020-0203-154554_007601_movie_t-1.jpg", "2020-0203-154554_007601_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In an urban setting, the ego vehicle approaches a broad two-way intersection on a smooth multi-lane road with no median, and traffic is light to moderate. A green city bus ahead on the left proceeds into the junction from the ego lane, briefly leading the approach and narrowing the view ahead. A silver sedan is parked at the right curb near the crosswalk, occupying the shoulder but not the lane. Far ahead, an oncoming white sedan travels through the intersection in its opposite lane without encroaching. Several pedestrians stand at the far-side crosswalk near the buildings.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00283", "split": "train", "clip_key": "2020-0213-143552_068022_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "068022"}, "frames": ["2020-0213-143552_068022_movie_t-3.jpg", "2020-0213-143552_068022_movie_t-2.jpg", "2020-0213-143552_068022_movie_t-1.jpg", "2020-0213-143552_068022_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with two same-direction lanes runs alongside shops and apartments, with smooth pavement and a low hedge median on the right separating oncoming traffic; overall flow is slow. A white box truck immediately ahead in the ego lane slows to a crawl because of traffic congestion ahead, holding the ego vehicle's pace. Parked trucks line a dealership entrance on the left but remain off the roadway. A narrow curb and the planted median on the right create a constrained lane, with no other moving vehicles clearly visible nearby.", "hazard_reasoning": "There is a white truck slowing down in the ego lane because of the traffic congestion ahead. The truck's reduced speed indicates you should slow down to maintain safe distance and avoid a collision."}
{"id": "train_00284", "split": "train", "clip_key": "2020-0227-104226_094740_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "094740"}, "frames": ["2020-0227-104226_094740_movie_t-3.jpg", "2020-0227-104226_094740_movie_t-2.jpg", "2020-0227-104226_094740_movie_t-1.jpg", "2020-0227-104226_094740_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of silver SUV changing lanes ahead", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between midrise buildings; the dry pavement is smooth and traffic is moderate, moving steadily in daylight. A white minivan directly ahead in the left lane proceeds straight at a similar speed and governs the ego car's pace. In the adjacent right lane, a box-bodied delivery truck travels slightly ahead and continues straight, discouraging a lane change. Farther ahead in the right lane, a black hatchback and a small van pull away with growing gaps while a large box truck in the distance moves slower, bunching vehicles. A white car is parked in a right-side bay, and metal railings line both sides.", "hazard_reasoning": "There is a silver SUV in front of the ego car in the ego lane, changing to the left lane, because it wants to get ahead of the traffic. A sudden lane change by this silver SUV may force you to brake or steer unexpectedly."}
{"id": "train_00285", "split": "train", "clip_key": "2020-0220-102630_085956_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "085956"}, "frames": ["2020-0220-102630_085956_movie_t-3.jpg", "2020-0220-102630_085956_movie_t-2.jpg", "2020-0220-102630_085956_movie_t-1.jpg", "2020-0220-102630_085956_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings; the pavement is dry and smooth, and traffic moves at a moderate pace. A white van ahead in the ego lane proceeds steadily, effectively setting the ego vehicle's speed. In the adjacent left lane, a black hatchback travels slightly ahead and continues straight, not merging toward the ego lane. Farther ahead in the left lane, a small box truck also continues straight and limits immediate overtaking options. To the right beyond a low fence, several large trucks in the oncoming lanes approach without affecting the ego path.", "hazard_reasoning": "There is a white van driving in the ego lane. You should be aware because it occupies your path and may slow or change speed unexpectedly."}
{"id": "train_00286", "split": "train", "clip_key": "titan_clip_154_000780_movie", "source": {"subset": "titan", "scenario": "clip_154", "frame": "000780"}, "frames": ["titan_clip_154_000780_movie_t-3.jpg", "titan_clip_154_000780_movie_t-2.jpg", "titan_clip_154_000780_movie_t-1.jpg", "titan_clip_154_000780_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single shared lane has no centerline or sidewalks, the asphalt looks smooth, and vehicular traffic is very light as the car moves slowly. Ahead in the lane, a man in a patterned shirt, blue pants, and a cap carrying a backpack walks away from the ego car because there is no sidewalk, occupying the path and setting the pace. Farther ahead near the left edge, another pedestrian walks in the same direction close to doorways and could drift into the lane. On the near left, a person approaches the camera along the edge and passes with tight clearance. Shopfronts line the right side, where stacked boxes and a barrel sit at the curb, narrowing the usable roadway.", "hazard_reasoning": "There is a tall man wearing a patterned shirt, blue pants, and a cap, carrying a backpack, and walking in front of the ego car, away from the ego car, because there is no sidewalk. The pedestrian is walking directly in the travel lane without a sidewalk, so the driver should slow down to avoid a potential collision."}
{"id": "train_00287", "split": "train", "clip_key": "titan_clip_340_000078_movie", "source": {"subset": "titan", "scenario": "clip_340", "frame": "000078"}, "frames": ["titan_clip_340_000078_movie_t-3.jpg", "titan_clip_340_000078_movie_t-2.jpg", "titan_clip_340_000078_movie_t-1.jpg", "titan_clip_340_000078_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban commercial street with a paver surface has no marked lanes or median, the pavement looks sound, and traffic is light as the ego vehicle rolls forward slowly. A small truck ahead in the center of the path creeps along near storefronts and effectively sets the ego car's pace. On the right side ahead, a pedestrian in a brown T-shirt and black pants with a backpack walks away from the ego car along the road edge because there is no sidewalk, and may drift into the lane. Two other pedestrians just to the right also walk away along the edge, momentarily encroaching on the drive path. Cones and signboards on the left narrow roadside space.", "hazard_reasoning": "The pedestrian in a brown t-shirt and black pants, with a backpack, is walking on the right side of the road, away from the ego car, because there is no sidewalk. Since the pedestrian is on the roadway due to lack of sidewalk, they may step unexpectedly into the vehicle's path, requiring the driver to carefully manoeuvre around them."}
{"id": "train_00288", "split": "train", "clip_key": "titan_clip_375_000222_movie", "source": {"subset": "titan", "scenario": "clip_375", "frame": "000222"}, "frames": ["titan_clip_375_000222_movie_t-3.jpg", "titan_clip_375_000222_movie_t-2.jpg", "titan_clip_375_000222_movie_t-1.jpg", "titan_clip_375_000222_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the pedestrian", "environment_perception": "On a dense urban street, the ego vehicle proceeds along a narrow roadway without marked lanes, with textured pavers and patched asphalt, and light traffic. Ahead near the crosswalk, a pedestrian wearing a black hoodie and carrying a blue bag crosses from the left side to the right side of the street in front of the ego vehicle at a steady walk across the ego path. Farther ahead in the same direction, a black sedan near the right edge rolls slowly and then continues away along the slight rightward bend. A blue no-parking sign stands by the storefront on the left. Parked or standing vehicles and shopfronts line the right side, leaving a tight corridor.", "hazard_reasoning": "There is a pedestrian wearing a black hoodie, carrying a blue bag, and crossing from the left side to the right side of the street. The driver should yield to the pedestrian because they are crossing directly in the vehicle's path and may not be fully visible until entering the lane."}
{"id": "train_00289", "split": "train", "clip_key": "titan_clip_312_000438_movie", "source": {"subset": "titan", "scenario": "clip_312", "frame": "000438"}, "frames": ["titan_clip_312_000438_movie_t-3.jpg", "titan_clip_312_000438_movie_t-2.jpg", "titan_clip_312_000438_movie_t-1.jpg", "titan_clip_312_000438_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre", "environment_perception": "An urban narrow two-way street with no centerline runs between midrise buildings; pavement is smooth and traffic is light. A silver sedan approaches ahead in the ego lane, driving toward the camera. A white truck stands ahead on the left at the curb, apparently stopped for loading, narrowing the usable lane. On the right edge two pedestrians walk near the roadway, one stepping close to the lane beside traffic cones. A black van is parked on the left with its rear door open and a worker and equipment beside it, forming a small roadside work area.", "hazard_reasoning": "There is a silver sedan driving in the ego lane, towards the ego car. The sedan may cut into the ego-vehicle's lane unexpectedly, so the driver should manoeuvre carefully to avoid a collision."}
{"id": "train_00290", "split": "train", "clip_key": "titan_clip_1161_000204_movie", "source": {"subset": "titan", "scenario": "clip_1161", "frame": "000204"}, "frames": ["titan_clip_1161_000204_movie_t-3.jpg", "titan_clip_1161_000204_movie_t-2.jpg", "titan_clip_1161_000204_movie_t-1.jpg", "titan_clip_1161_000204_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "A narrow urban street with brick paving runs between tall buildings, functioning as a single mixed-traffic lane without a centerline; the surface is dry and traffic is light with no oncoming vehicles visible. A silver van is parked along the left curb near the ego-vehicle, partly narrowing the lane. Farther ahead in the same direction, a dark van proceeds slowly near the center and constrains the ego vehicle's pace. On the right sidewalk, one pedestrian stands by a storefront while another farther ahead walks along the curb, remaining out of the roadway but close to the lane edge. A large 30 marking is painted on the pavement. Cones and a chained barrier line the left sidewalk as additional roadside obstacles.", "hazard_reasoning": "There is a silver van parked on the left side of the road. A parked vehicle close to the travel lane can limit clearance and requires careful manoeuvring to avoid collision."}
{"id": "train_00291", "split": "train", "clip_key": "titan_clip_628_000318_movie", "source": {"subset": "titan", "scenario": "clip_628", "frame": "000318"}, "frames": ["titan_clip_628_000318_movie_t-3.jpg", "titan_clip_628_000318_movie_t-2.jpg", "titan_clip_628_000318_movie_t-1.jpg", "titan_clip_628_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban shopping street with an undivided lane and smooth pavement runs between storefronts, with light vehicle presence and heavy pedestrian activity. On the right edge near the shops, a woman in a gray T-shirt and jeans walks toward the ego vehicle along the roadway and may enter the ego lane. Farther ahead in the center of the lane, a pedestrian in light clothing walks away from the camera, constraining the ego vehicle's pace. Near a utility pole on the right, two people step off the curb and begin crossing toward the left, moving into the ego path. On the left by a restaurant entrance, another person waits at the curb close to the lane. A red-and-blue roadside sign ahead indicates parking restrictions.", "hazard_reasoning": "A woman in a gray t-shirt and jeans, walking on the right side of the road towards the ego car. The pedestrian could step into the vehicle's path, so the driver should be aware to prevent a collision."}
{"id": "train_00292", "split": "train", "clip_key": "2020-0228-102841_008486_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "008486"}, "frames": ["2020-0228-102841_008486_movie_t-3.jpg", "2020-0228-102841_008486_movie_t-2.jpg", "2020-0228-102841_008486_movie_t-1.jpg", "2020-0228-102841_008486_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane two-way street with tall buildings leads to a signalized intersection; pavement is dry and smooth, and traffic is moderate but momentarily impeded in the ego lane. A white van directly ahead in the ego lane is stopped, waiting to turn right, holding the ego vehicle. A motorcyclist in the adjacent left lane advances straight through the intersection past the stopped van. In the adjacent right lane, a blue light truck proceeds straight beside the van, limiting room for the ego to change lanes. The traffic signal facing the ego shows green.", "hazard_reasoning": "A white van is stopped in front of the ego car in the ego lane, because it is waiting to turn right. The driver must stop to avoid a collision with the stationary vehicle as it prepares to turn."}
{"id": "train_00293", "split": "train", "clip_key": "titan_clip_230_000258_movie", "source": {"subset": "titan", "scenario": "clip_230", "frame": "000258"}, "frames": ["titan_clip_230_000258_movie_t-3.jpg", "titan_clip_230_000258_movie_t-2.jpg", "titan_clip_230_000258_movie_t-1.jpg", "titan_clip_230_000258_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene is an urban shopping street with tall buildings, a narrow single-lane roadway without a divider, brick paving in good condition, and light motor traffic but heavy pedestrian presence. Ahead in the center of the lane, a pedestrian wearing a cap and backpack walks away from the ego vehicle while wheeling a bicycle, occupying the path and constraining speed. A white van stands ahead near the left edge of the lane, reducing the usable width. Another pedestrian walks toward the ego in the middle distance in the lane.", "hazard_reasoning": "There is a pedestrian wearing a cap and backpack, walking in the middle of the road with her bicycle, away from the ego car. Slow down to avoid collision, as the pedestrian is occupying the travel lane and may not clear the road promptly."}
{"id": "train_00294", "split": "train", "clip_key": "2020-0220-102630_020868_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "020868"}, "frames": ["2020-0220-102630_020868_movie_t-3.jpg", "2020-0220-102630_020868_movie_t-2.jpg", "2020-0220-102630_020868_movie_t-1.jpg", "2020-0220-102630_020868_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down to avoid collision with merging sedan", "environment_perception": "An urban multi-lane arterial with smooth dry pavement runs alongside shops, with a metal fence median separating oncoming traffic; flow is moderate and moving slowly. A white sedan ahead in the ego lane moves right to change into the adjacent lane, doing so to get around a slow box truck further ahead in the ego lane. The box truck sits farther up the center of our path and rolls slowly, constraining the pace of following vehicles. A small covered pickup in the right lane advances alongside and opens a gap, into which the white sedan merges, momentarily affecting the space ahead of the ego vehicle.", "hazard_reasoning": "There's a white sedan changing lanes from the ego lane to the right lane, because of a truck that slowed ahead in the ego-lane. This unexpected lane change requires you to slow down to maintain a safe following distance."}
{"id": "train_00295", "split": "train", "clip_key": "titan_clip_128_000522_movie", "source": {"subset": "titan", "scenario": "clip_128", "frame": "000522"}, "frames": ["titan_clip_128_000522_movie_t-3.jpg", "titan_clip_128_000522_movie_t-2.jpg", "titan_clip_128_000522_movie_t-1.jpg", "titan_clip_128_000522_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "In a dense urban commercial district, the ego vehicle approaches a two-way, one-lane intersection with no divider and smooth pavement; traffic is light. On the near crosswalk at the left, a pedestrian in light clothing walks from left to right across the ego lane, directly in the vehicle's path. Far ahead on the opposite side of the intersection, a pedestrian wearing a black T-shirt crosses the crosswalk from right to left across the ego lane. At the right curb by the corner storefront, a yellow taxi stands stopped near the crosswalk, remaining at the curbside. A white van is stopped at the near-left curb, partly masking the view of pedestrians on that side.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and crossing a crosswalk from right to left, on the other side of the intersection. The driver should slow down because the pedestrian is entering the vehicle's path and could step into the lane unexpectedly."}
{"id": "train_00296", "split": "train", "clip_key": "2020-0218-151547_007522_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "007522"}, "frames": ["2020-0218-151547_007522_movie_t-3.jpg", "2020-0218-151547_007522_movie_t-2.jpg", "2020-0218-151547_007522_movie_t-1.jpg", "2020-0218-151547_007522_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial enters a wide signalized intersection with smooth pavement and no median, and traffic is moderate. Ahead slightly right, an orange bus turns across the ego vehicle toward the left side of the intersection, passing in front and briefly blocking the path. To the right, several same-direction cars continue straight through the junction, filtering past the turning bus and setting a steady pace. On the left curb, a car waits at the corner near the crosswalk but remains outside the ego lane. Overhead traffic lights and tall city buildings frame the scene as the flow proceeds.", "hazard_reasoning": "There is an orange bus turning in front of the ego car, towards the left side of the intersection. The turning bus encroaches on the ego-vehicle's path, creating a collision risk if not addressed. The driver should stop to allow the bus to complete its turn safely."}
{"id": "train_00297", "split": "train", "clip_key": "2020-0131-135401_036185_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "036185"}, "frames": ["2020-0131-135401_036185_movie_t-3.jpg", "2020-0131-135401_036185_movie_t-2.jpg", "2020-0131-135401_036185_movie_t-1.jpg", "2020-0131-135401_036185_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for the stopped white SUV.", "environment_perception": "An urban two-way road with multiple lanes approaches a signalized intersection; the pavement is dry and smooth and traffic is light. A white car directly ahead in the ego lane is stopped at the red light, holding the ego vehicle. A red van waits slightly farther ahead toward the intersection in the adjacent right lane, also stationary and not blocking the ego path. An oncoming car passes through the junction in the opposite lanes without conflict. Overhead signals display red for the ego direction, and a school?one warning sign stands on the left sidewalk.", "hazard_reasoning": "There is a white SUV stopped in the ego lane, because of the red traffic light. The red light and the halted SUV ahead require the driver to stop to avoid collision with the stopped vehicle."}
{"id": "train_00298", "split": "train", "clip_key": "2020-0212-102546_092823_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "092823"}, "frames": ["2020-0212-102546_092823_movie_t-3.jpg", "2020-0212-102546_092823_movie_t-2.jpg", "2020-0212-102546_092823_movie_t-1.jpg", "2020-0212-102546_092823_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "Inside an expressway tunnel, the ego-vehicle travels in a single through lane bordered by a striped shoulder on the left and a concrete barrier on the right; the pavement is smooth and overall flow is slow. A white van directly ahead in the ego lane slows with brake lights on because of congestion visible farther ahead, constraining the ego vehicle's pace. A short line of cars continues in the same direction beyond the van, keeping close gaps and moving steadily but slowly. No oncoming traffic or salient signals are visible.", "hazard_reasoning": "There's a white van slowing down in the ego lane, because of traffic congestion ahead. You should follow the vehicle ahead to maintain proper spacing and adjust speed accordingly."}
{"id": "train_00299", "split": "train", "clip_key": "2020-0214-102601_066877_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "066877"}, "frames": ["2020-0214-102601_066877_movie_t-3.jpg", "2020-0214-102601_066877_movie_t-2.jpg", "2020-0214-102601_066877_movie_t-1.jpg", "2020-0214-102601_066877_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A suburban arterial with two same-direction lanes has smooth pavement; the left lane is coned off by roadside construction, and traffic is queued and stopped at a red overhead signal. Ahead in the ego lane, a blue hatchback is stopped for the red light and holds the ego vehicle. Farther ahead in the same lane, a black minivan waits stationary as part of the queue, leaving limited headway. At the front of the line, a white box truck near the intersection also remains stopped, setting the pace. Temporary roadwork boards and cones on the left announce a merge and narrow the roadway.", "hazard_reasoning": "There is a blue hatchback stopped in front of the ego car, because of a red traffic light. The driver should stop because the vehicle ahead is halted at a red signal to avoid a collision."}
{"id": "train_00300", "split": "train", "clip_key": "2020-0225-102455_021618_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "021618"}, "frames": ["2020-0225-102455_021618_movie_t-3.jpg", "2020-0225-102455_021618_movie_t-2.jpg", "2020-0225-102455_021618_movie_t-1.jpg", "2020-0225-102455_021618_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban street curves right with smooth pavement and no median, and traffic in the ego direction moves slowly in a short queue. A silver sedan directly ahead in the ego lane slows because of congestion ahead, constraining the ego vehicle's pace. Farther ahead to the right, a black van and a white box truck creep along near the curve in the same direction, contributing to the backup. On the left sidewalk, two pedestrians walk near a side-street crosswalk but remain on the curb behind a small barrier.", "hazard_reasoning": "There is a silver sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The silver sedan's reduced speed signals a buildup of traffic ahead, so you should slow down to maintain a safe following distance."}
{"id": "train_00301", "split": "train", "clip_key": "2020-0203-154554_073928_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_073928_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_073928_movie_t-3_augB1.jpg", "2020-0203-154554_073928_movie_t-2_augB1.jpg", "2020-0203-154554_073928_movie_t-1_augB1.jpg", "2020-0203-154554_073928_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A tree-lined urban two-way road with one lane per direction and no median appears, the pavement dry and traffic heavy with a queue ahead. An orange compact hatchback directly ahead in the ego lane slows in the queue, constraining the ego car's pace due to congestion. A motorcyclist slightly ahead and to the left rides forward along the left edge past the line of cars, moving close to the ego lane's path. In the opposite direction to the right, a white van and several following cars approach in their lane near the centerline, keeping the corridor narrow. A zebra crossing spans the foreground and an overhead gantry sign is visible.", "hazard_reasoning": "There is an orange compact hatchback slowing down in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adapt to the congested traffic."}
{"id": "train_00302", "split": "train", "clip_key": "2020-0129-105040_079981_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "079981"}, "frames": ["2020-0129-105040_079981_movie_t-3.jpg", "2020-0129-105040_079981_movie_t-2.jpg", "2020-0129-105040_079981_movie_t-1.jpg", "2020-0129-105040_079981_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way residential street with a single lane in each direction and a center line approaches a signalized four-way intersection; the pavement is dry and traffic is light. A cyclist at the left corner enters the zebra crossing and pedals rightward across in front of the ego lane, continuing straight through the junction and temporarily controlling the ego's pace. Overhead traffic lights and utility poles frame the intersection. Parked vehicles, including a light-blue minivan by a fenced lot on the right corner and several cars farther ahead, sit at the curb without encroaching into the lane.", "hazard_reasoning": "No hazards detected. The intersection is clear and it is safe to continue driving normally."}
{"id": "train_00303", "split": "train", "clip_key": "titan_clip_479_000480_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_479_000480_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_479_000480_movie_t-3_augB1.jpg", "titan_clip_479_000480_movie_t-2_augB1.jpg", "titan_clip_479_000480_movie_t-1_augB1.jpg", "titan_clip_479_000480_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be cautious of cyclist veering around parked truck", "environment_perception": "A narrow urban two-way street with stone block pavement runs between shops, with no median and light, slow traffic. Ahead on the right, a cyclist wearing a black T-shirt and carrying a backpack rides toward the ego vehicle, moving into the ego lane to pass a parked vehicle and briefly encroaching on our path. A small flatbed truck ahead on the right is stopped for loading, narrowing the same-direction lane and constraining the corridor. A larger white truck stands at the near right curb, further reducing available width and leaving effectively one usable lane. No prominent traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a cyclist wearing a black t-shirt, carrying a backpack, cycling on the right side of the road towards the ego car, because of the parked vehicle. The cyclist may swerve into the vehicle's path to avoid the parked truck, so the driver should be cautious to prevent a collision."}
{"id": "train_00304", "split": "train", "clip_key": "2020-0220-151845_054369_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "054369"}, "frames": ["2020-0220-151845_054369_movie_t-3.jpg", "2020-0220-151845_054369_movie_t-2.jpg", "2020-0220-151845_054369_movie_t-1.jpg", "2020-0220-151845_054369_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs under an elevated structure with two same-direction lanes divided by a yellow line, a concrete barrier on the left shoulder, and wet pavement; traffic is heavy and slow. A red flatbed truck directly ahead in the ego lane slows and inches forward because of congestion, setting the ego car's pace. In the adjacent right lane slightly ahead, a silver hatchback moves slowly parallel to the ego path without signaling a lane change. Close to the camera on the right, a white van in the neighboring lane advances slowly, gradually overtaking the ego vehicle. No signals are visible, and no oncoming traffic appears, as the road seems one-way or separated.", "hazard_reasoning": "A red truck is slowing in front of the ego car in the ego lane, because of traffic congestion. Drivers should reduce speed and maintain a safe following distance due to the slowed traffic ahead."}
{"id": "train_00305", "split": "train", "clip_key": "titan_clip_842_000072_movie", "source": {"subset": "titan", "scenario": "clip_842", "frame": "000072"}, "frames": ["titan_clip_842_000072_movie_t-3.jpg", "titan_clip_842_000072_movie_t-2.jpg", "titan_clip_842_000072_movie_t-1.jpg", "titan_clip_842_000072_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian distraction", "environment_perception": "An urban two-way street between mid-rise buildings has one lane in each direction, no median, smooth pavement, and light traffic. A silver minivan in the oncoming lane to the right approaches slowly near the intersection, passing close to the ego's path but remaining in its lane. Far ahead in the ego lane, a white truck proceeds straight and gradually recedes, lightly setting the pace for traffic. On the left side of the intersection, a pedestrian wearing a white shirt and green pants looks at a phone while walking away from the ego along the sidewalk, remaining clear of the roadway. No unusual signage or hazards are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and green pants, looking into a phone, and walking on the left side of the intersection, away from the ego car. Because the pedestrian is distracted and near the intersection, they may step into the road unexpectedly, so the driver should be aware."}
{"id": "train_00306", "split": "train", "clip_key": "2020-0210-155354_002731_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "002731"}, "frames": ["2020-0210-155354_002731_movie_t-3.jpg", "2020-0210-155354_002731_movie_t-2.jpg", "2020-0210-155354_002731_movie_t-1.jpg", "2020-0210-155354_002731_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with shops lines both sides, one lane per direction and no median; the asphalt looks smooth and traffic is queued at a signal. A white car is stopped directly ahead in the ego lane because the overhead traffic light shows red, constraining the ego vehicle. Pedestrians stream across the zebra crossing in front of that car from both sidewalks, some nearing the center of the lane. Oncoming vehicles continue through the intersection and a few turn, moving past while the ego direction waits.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid colliding with this stationary vehicle at the red signal."}
{"id": "train_00307", "split": "train", "clip_key": "titan_clip_877_000570_movie", "source": {"subset": "titan", "scenario": "clip_877", "frame": "000570"}, "frames": ["titan_clip_877_000570_movie_t-3.jpg", "titan_clip_877_000570_movie_t-2.jpg", "titan_clip_877_000570_movie_t-1.jpg", "titan_clip_877_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban two-way street with one narrow lane per direction and no median stretches ahead, the asphalt in good condition and traffic light. The ego travels in the left lane. A small flatbed truck is stopped along the left edge just ahead, partially intruding into the ego lane and slowing the approach as the vehicle prepares to pass. A pedestrian in a red shirt and black pants walks away from the ego along the left side near this truck because the parked vehicle occupies the curb space, moving close to the ego path. On the right at a marked crosswalk, another pedestrian pauses at the curb beside a side street and does not enter the roadway. A blue no-parking sign stands on the right near the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a red shirt and black pants walking on the left side of the road away from the ego car because of a parked vehicle. The pedestrian may step into the roadway unexpectedly due to limited visibility caused by the parked truck, so the driver should carefully manoeuvre around the obstruction to avoid collision."}
{"id": "train_00308", "split": "train", "clip_key": "2020-0129-105040_046529_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "046529"}, "frames": ["2020-0129-105040_046529_movie_t-3.jpg", "2020-0129-105040_046529_movie_t-2.jpg", "2020-0129-105040_046529_movie_t-1.jpg", "2020-0129-105040_046529_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs under an elevated expressway, with a smooth two-lane carriageway for our direction separated by a raised median; traffic is light to moderate and flows steadily. A gray van ahead in the ego lane pulls away gradually along our path, increasing the gap and setting the immediate pace. On the right, a red minivan pauses at a side bay near the curb, angled to merge and potentially enter the ego lane. Farther ahead in the adjacent right lane, a small white truck continues in the same direction at similar speed without affecting our path. A no-turn sign is posted on the expressway pillar.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00309", "split": "train", "clip_key": "2020-0205-152530_046045_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "046045"}, "frames": ["2020-0205-152530_046045_movie_t-3.jpg", "2020-0205-152530_046045_movie_t-2.jpg", "2020-0205-152530_046045_movie_t-1.jpg", "2020-0205-152530_046045_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane divided road beside the waterfront leads toward an arched bridge, the pavement smooth and traffic light to moderate. A dark sedan ahead in the ego lane proceeds straight at a steady pace, defining the ego car's following gap. Farther ahead under the arches, a white truck in the ego lane moves forward because the road ahead is clear. To the right, a light-colored wagon travels parallel in the adjacent lane without impeding the ego path. Pedestrians walk along the left sidewalk behind a guardrail. An overhead signal displays a green straight arrow.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00310", "split": "train", "clip_key": "titan_clip_335_000594_movie", "source": {"subset": "titan", "scenario": "clip_335", "frame": "000594"}, "frames": ["titan_clip_335_000594_movie_t-3.jpg", "titan_clip_335_000594_movie_t-2.jpg", "titan_clip_335_000594_movie_t-1.jpg", "titan_clip_335_000594_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around parked vehicle", "environment_perception": "A narrow urban two-way street with no median and smooth pavement curves gently between shops, and traffic flow is light. Pedestrian activity is high on both sidewalks. Ahead on the left, a green sedan is parked at the curb, partly intruding into the ego lane and constraining space for passage. On the right near the curb, a man stands facing the roadway and remains stationary, close to the travel lane and relevant to the ego vehicle's path. Farther ahead the roadway appears clear of immediate oncoming vehicles, and no traffic signals or posted speeds are evident.", "hazard_reasoning": "There is a green sedan parked on the left side of the road. The parked sedan reduces lane width, requiring the driver to carefully maneuver around it to avoid collision."}
{"id": "train_00311", "split": "train", "clip_key": "2020-0213-143552_065521_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "065521"}, "frames": ["2020-0213-143552_065521_movie_t-3.jpg", "2020-0213-143552_065521_movie_t-2.jpg", "2020-0213-143552_065521_movie_t-1.jpg", "2020-0213-143552_065521_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes runs past shops and apartments; a low shrub median separates oncoming lanes to the right, the pavement is dry, and traffic is moderate but compresses farther ahead. A gray box truck mid-distance ahead in the inner right lane slows as vehicles bunch up, which tempers the overall flow. A black hatchback directly ahead in the ego left lane cruises then eases off to match the slowdown, constraining the ego vehicle's pace. A small white car farther ahead in the same lane also queues behind upstream traffic. Oncoming cars to the right move steadily behind the median and do not affect the ego path.", "hazard_reasoning": "There is a gray truck slowing down in the ego-lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a potential collision."}
{"id": "train_00312", "split": "train", "clip_key": "2020-0203-114632_028386_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "028386"}, "frames": ["2020-0203-114632_028386_movie_t-3.jpg", "2020-0203-114632_028386_movie_t-2.jpg", "2020-0203-114632_028386_movie_t-1.jpg", "2020-0203-114632_028386_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction and no median runs between midrise buildings; the pavement is clean and dry and traffic is moderate near a signalized intersection. A black van ahead in the ego lane moves left into the curb lane because of congestion ahead, briefly opening space in the ego lane. A white box truck stands at the left curb just before the crosswalk, narrowing the left lane and causing passing vehicles to edge around it. Oncoming traffic includes a compact car and a white truck proceeding through the junction in their lanes without affecting the ego path.", "hazard_reasoning": "There is a black van changing lanes, from the ego lane, to the left lane, because of traffic congestion ahead. Under these conditions, slow down to maintain safe distance and avoid a sudden maneuver."}
{"id": "train_00313", "split": "train", "clip_key": "titan_clip_447_000456_movie", "source": {"subset": "titan", "scenario": "clip_447", "frame": "000456"}, "frames": ["titan_clip_447_000456_movie_t-3.jpg", "titan_clip_447_000456_movie_t-2.jpg", "titan_clip_447_000456_movie_t-1.jpg", "titan_clip_447_000456_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "A narrow urban street with textured paving and no center divider is seen in daylight, and traffic is light. Ahead on the right, a white delivery truck is stopped partly in the ego lane because it is being unloaded, its open rear narrowing the roadway. A worker with a handcart moves in the roadway behind the truck, occupying part of the ego vehicle's path near the right edge. On the right sidewalk, a pedestrian walks past the truck while remaining on the curb. A 30 speed limit sign and a pedestrian crossing sign are visible on the right.", "hazard_reasoning": "There is a white truck parked in the ego lane, on the right side of the road, because it is being unloaded. Drivers should manoeuvre carefully around the parked truck to avoid collision with the obstruction."}
{"id": "train_00314", "split": "train", "clip_key": "titan_clip_198_000438_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_198_000438_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_198_000438_movie_t-3_augB1.jpg", "titan_clip_198_000438_movie_t-2_augB1.jpg", "titan_clip_198_000438_movie_t-1_augB1.jpg", "titan_clip_198_000438_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban street with tall buildings lines a single narrow two-way road with no median and smooth pavement; traffic is light and slow. Ahead in the ego lane, a large white box truck rolls slowly and intermittently stops, constraining the ego vehicle's pace. In front of the ego, a pedestrian wearing black pants and a gray shirt crosses from the right curb to the left through the vehicle's path where there is no crosswalk. Another pedestrian just ahead of them also moves leftward across the lane slightly farther from the ego. Farther ahead beyond the truck, a small car in the same direction proceeds cautiously.", "hazard_reasoning": "There is a pedestrian wearing black pants and a gray shirt, crossing the street in front of the ego car, from the right side of the road to the left side, because there is no pedestrian crosswalk. Driver should slow down because the pedestrian is crossing unpredictably without a designated crosswalk, creating a high collision risk."}
{"id": "train_00315", "split": "train", "clip_key": "2020-0214-145407_040811_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "040811"}, "frames": ["2020-0214-145407_040811_movie_t-3.jpg", "2020-0214-145407_040811_movie_t-2.jpg", "2020-0214-145407_040811_movie_t-1.jpg", "2020-0214-145407_040811_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane arterial runs beneath an elevated expressway, the pavement worn but dry, and traffic moves slowly in a compact flow. A white van directly ahead in the ego lane slows because traffic congestion builds in front, setting the ego vehicle's pace. A silver sedan in the adjacent right lane proceeds slowly a little ahead, keeping pace with the queue and contributing to the slowdown. Farther ahead, multiple vehicles in both lanes continue under the viaduct at reduced speed, forming a steady line. A bollard- and rail-protected side area lines the right edge, and an overhead directional sign with lane arrows is visible ahead.", "hazard_reasoning": "There is a white van slowing down in the ego lane, because of traffic congestion ahead. Driver should slow down in response to the van's deceleration to maintain a safe following distance and reduce collision risk."}
{"id": "train_00316", "split": "train", "clip_key": "2020-0131-103016_025676_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "025676"}, "frames": ["2020-0131-103016_025676_movie_t-3.jpg", "2020-0131-103016_025676_movie_t-2.jpg", "2020-0131-103016_025676_movie_t-1.jpg", "2020-0131-103016_025676_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A suburban two-way road with one lane per direction runs beside a sidewalk and guardrail, divided from oncoming traffic by a raised median and chevron buffer; the pavement is smooth and traffic is light. Directly ahead in the ego lane, a white box truck is stopped, blocking the lane and constraining the ego car. To the right, an oncoming white car travels past in its own lane and does not affect the ego path. A roadside circular sign shows 40.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The driver should stop to avoid a collision with the stationary vehicle ahead at the red light."}
{"id": "train_00317", "split": "train", "clip_key": "2020-0212-102546_095435_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "095435"}, "frames": ["2020-0212-102546_095435_movie_t-3.jpg", "2020-0212-102546_095435_movie_t-2.jpg", "2020-0212-102546_095435_movie_t-1.jpg", "2020-0212-102546_095435_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial under elevated expressways carries same-direction traffic on smooth reddish pavement, with guardrails along the edges and moderate, slow-moving flow. Directly ahead in the ego lane, a white flatbed truck is stopped, blocking the path and setting the pace. In the adjacent left lane, a white van slightly ahead creeps forward past the stopped truck, offering a potential bypass but limiting immediate space. In the right lane, a silver van ahead proceeds slowly in line with traffic, constraining any merge to the right. Overhead blue directional signs span the roadway as the lanes continue beneath the flyovers.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The stopped truck ahead blocks the lane and poses a collision risk, so the driver should stop immediately."}
{"id": "train_00318", "split": "train", "clip_key": "2020-0214-102601_018900_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "018900"}, "frames": ["2020-0214-102601_018900_movie_t-3.jpg", "2020-0214-102601_018900_movie_t-2.jpg", "2020-0214-102601_018900_movie_t-1.jpg", "2020-0214-102601_018900_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban intersection with a single-lane approach leads to a zebra crosswalk and a small traffic island ahead; the asphalt is worn and traffic is light as the vehicle waits at a red signal. On the left front, a cyclist wearing a white shirt rides rightward across the crosswalk in front of the vehicle, potentially entering its path. In the center ahead, a pedestrian walks right across the stripes, continuing through the lane and constraining any start. Farther left, another pedestrian steps onto the crosswalk moving right, following the others. A blue mandatory right arrow on the island indicates vehicles must keep right.", "hazard_reasoning": "There is a cyclist wearing a white shirt and cycling to the right across a crosswalk. The driver should stop to yield right-of-way to the cyclist and avoid a collision."}
{"id": "train_00319", "split": "train", "clip_key": "2020-0129-105040_073555_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "073555"}, "frames": ["2020-0129-105040_073555_movie_t-3.jpg", "2020-0129-105040_073555_movie_t-2.jpg", "2020-0129-105040_073555_movie_t-1.jpg", "2020-0129-105040_073555_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban residential two-way street with two narrow lanes and a single center line extends straight ahead, the left lane tinted red and the pavement smooth; traffic is light. Ahead in the left ego lane, a white van drives away from the ego car, moving steadily and remaining in our path. The oncoming lane appears clear in view, and no pedestrians, cyclists, or parked vehicles encroach on the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00320", "split": "train", "clip_key": "2020-0217-110854_045814_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "045814"}, "frames": ["2020-0217-110854_045814_movie_t-3.jpg", "2020-0217-110854_045814_movie_t-2.jpg", "2020-0217-110854_045814_movie_t-1.jpg", "2020-0217-110854_045814_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-lane one-way road runs under an elevated expressway, bounded by trees on the left and guardrails with construction fencing on the right; the pavement looks smooth and traffic is light. Ahead in the ego lane, a black SUV is stopped and holds the ego vehicle at a standstill. The adjacent right lane appears open with no vehicles immediately alongside, and there is no oncoming traffic on this one-way stretch. No pedestrians or cyclists are visible, and the construction area stays contained behind the barrier.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, in the ego lane. The stopped vehicle ahead necessitates the driver to stop immediately to prevent a rear-end collision."}
{"id": "train_00321", "split": "train", "clip_key": "2020-0213-143552_012396_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "012396"}, "frames": ["2020-0213-143552_012396_movie_t-3.jpg", "2020-0213-143552_012396_movie_t-2.jpg", "2020-0213-143552_012396_movie_t-1.jpg", "2020-0213-143552_012396_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban neighborhood scene on a narrow two-way road that curves right, with a painted hatched island at the fork; the pavement is dry and traffic is light. A small white truck ahead in the ego lane moves steadily forward with no congestion, directly in front of the ego car. Farther ahead, a white minivan in the same direction continues through the bend, maintaining a gap to the truck. At a side street on the left beside a utility pole, a scooter is stopped and waiting to merge, which may enter the ego lane after the vehicles pass. A blue no-parking sign is posted on the pole.", "hazard_reasoning": "There is a white truck moving forward in the ego lane due to no traffic congestion, in front of the ego car. You should follow the vehicle at a safe distance since it dictates the flow and may brake unexpectedly."}
{"id": "train_00322", "split": "train", "clip_key": "2020-0218-103119_022405_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0218-103119_022405_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0218-103119_022405_movie_t-3_augB1.jpg", "2020-0218-103119_022405_movie_t-2_augB1.jpg", "2020-0218-103119_022405_movie_t-1_augB1.jpg", "2020-0218-103119_022405_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the traffic cone", "environment_perception": "An urban divided arterial with two lanes in each direction runs between mid-rise buildings, the pavement is smooth and traffic is moderate. A narrow median with flexible posts separates oncoming traffic, and the number 50 is painted on the road surface. A white van ahead in the ego lane proceeds toward a pedestrian overpass, lightly constraining the ego vehicle's pace. Slightly ahead to the left, a silver sedan in the same direction cruises near the curb and remains in lane. To the right, several small trucks approach in the oncoming lanes at steady speed and remain separated by the median. An orange and white traffic cone sits on the right edge of the ego lane near the median.", "hazard_reasoning": "There is an orange and white traffic cone on the right side of the ego lane. The driver should be aware because the cone signals nearby construction and may require caution or lane adjustment."}
{"id": "train_00323", "split": "train", "clip_key": "2020-0220-151845_034437_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "034437"}, "frames": ["2020-0220-151845_034437_movie_t-3.jpg", "2020-0220-151845_034437_movie_t-2.jpg", "2020-0220-151845_034437_movie_t-1.jpg", "2020-0220-151845_034437_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway has three same-direction lanes bordered by railings, with smooth pavement and moderate, steady flow. A red truck directly ahead in the ego lane slows, constraining the ego car's pace. A dark car in the right lane draws level and proceeds ahead, overtaking the truck without merging. A bicyclist along the far left curb moves in the same direction near the left lane boundary but stays outside the ego lane. Overhead blue guide signs hang above the roadway.", "hazard_reasoning": "There is a red truck slowing in the ego lane, in front of the ego car. The truck's reduced speed requires the driver to slow down to maintain a safe distance and avoid a collision."}
{"id": "train_00324", "split": "train", "clip_key": "2020-0220-151845_025380_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "025380"}, "frames": ["2020-0220-151845_025380_movie_t-3.jpg", "2020-0220-151845_025380_movie_t-2.jpg", "2020-0220-151845_025380_movie_t-1.jpg", "2020-0220-151845_025380_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes on dry pavement and heavy, stop-and-go flow. A black van directly ahead in the ego lane is stopped due to congestion ahead, blocking the path and dictating the pace. In the left lane, a small tarp-covered light truck slightly ahead inches forward with the queue and could hinder any move left. In the right lane, a red car a bit ahead slows with brake lights lit beside the viaduct pillars, holding position alongside the ego vehicle.", "hazard_reasoning": "There is a black van stopped in the ego lane because of traffic congestion up ahead. The driver needs to stop promptly to avoid a rear-end collision when approaching the stopped van under congested conditions."}
{"id": "train_00325", "split": "train", "clip_key": "2020-0214-145407_005281_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "005281"}, "frames": ["2020-0214-145407_005281_movie_t-3.jpg", "2020-0214-145407_005281_movie_t-2.jpg", "2020-0214-145407_005281_movie_t-1.jpg", "2020-0214-145407_005281_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane road without a median curves gently right, the pavement looks smooth, and traffic in the ego direction is slow and queued. A large box truck directly ahead in the left-side ego lane rolls to a halt near the intersection, limiting the ego vehicle's pace. Farther ahead in the same lane, a silver van remains stopped for a red traffic light, adding to the queue. On the right, several small vans approach in the oncoming lane and pass steadily without deviating toward the ego path. A suspended traffic signal ahead shows red over the intersection.", "hazard_reasoning": "There is a silver van stopped in the ego lane, because of a red traffic light. Stop immediately to comply with the traffic signal and avoid a collision with the halted vehicle."}
{"id": "train_00326", "split": "train", "clip_key": "2020-0210-101957_051174_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_051174_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_051174_movie_t-3_augB1.jpg", "2020-0210-101957_051174_movie_t-2_augB1.jpg", "2020-0210-101957_051174_movie_t-1_augB1.jpg", "2020-0210-101957_051174_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth, dry pavement shows heavy, slow traffic, with a chevron-marked buffer and a busy curb-side lane to the right. A black sedan directly ahead in the ego lane slows for congestion and sets the ego car's pace. A large white box truck runs slightly ahead to the left in the adjacent lane, continuing straight and limiting a leftward lane change. Along the right, a line of delivery trucks and small vans is mostly stationary in the curb-side lane beside the buffer, blocking any move to the right. An overhead electronic sign spans the roadway as the flow compresses toward the distance.", "hazard_reasoning": "There's a black sedan slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The sedan's decreased speed signals a buildup of vehicles ahead, so the driver should reduce speed to maintain a safe following distance under these conditions."}
{"id": "train_00327", "split": "train", "clip_key": "titan_clip_1120_000570_movie", "source": {"subset": "titan", "scenario": "clip_1120", "frame": "000570"}, "frames": ["titan_clip_1120_000570_movie_t-3.jpg", "titan_clip_1120_000570_movie_t-2.jpg", "titan_clip_1120_000570_movie_t-1.jpg", "titan_clip_1120_000570_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cones", "environment_perception": "An urban two-way street with one narrow lane per direction and no median runs between tall buildings; the pavement is smooth and traffic is light. Several traffic cones are along the left side of the lane. On the left near the ego, several pedestrians cluster at the curb, and one steps from the sidewalk into the ego lane, beginning to cross toward the right and potentially entering the vehicle's path. In the oncoming lane ahead, a city bus approaches slowly and then stops by the right curb while remaining in its lane. Farther ahead on the right, a blue taxi is stopped at the curb facing the ego and does not affect the ego lane.", "hazard_reasoning": "Traffic cones are along the left side of the lane. They indicate potential roadwork and lane narrowing, so the driver should be aware to adjust position accordingly."}
{"id": "train_00328", "split": "train", "clip_key": "2020-0204-150838_032532_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "032532"}, "frames": ["2020-0204-150838_032532_movie_t-3.jpg", "2020-0204-150838_032532_movie_t-2.jpg", "2020-0204-150838_032532_movie_t-1.jpg", "2020-0204-150838_032532_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop and maintain a safe distance", "environment_perception": "An urban multi-lane arterial between tall buildings has smooth pavement and heavy, stop-and-go flow with no physical median visible. A white van directly ahead in the ego lane stands still because congestion ahead blocks movement, holding the ego vehicle in place. To the left, a black taxi runs alongside in the adjacent lane and creeps forward, limiting room to change lanes. Slightly ahead in the left lane, a white minivan waits in the queue and advances slowly, keeping pace with the van. An overhead blue sign shows a straight-ahead arrow above the lanes.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of traffic congestion ahead. The driver should stop and maintain a safe distance to avoid a collision with the stationary vehicles."}
{"id": "train_00329", "split": "train", "clip_key": "2020-0204-103442_035847_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "035847"}, "frames": ["2020-0204-103442_035847_movie_t-3.jpg", "2020-0204-103442_035847_movie_t-2.jpg", "2020-0204-103442_035847_movie_t-1.jpg", "2020-0204-103442_035847_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene under an elevated structure shows a two-lane same-direction road with a left guardrail and chevron boards; the pavement is in good condition and traffic moves slowly. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. To the right, a silver hatchback slightly ahead near the diagonally striped area crawls in the adjacent lane, remaining parallel to the ego vehicle. Farther ahead in the right lane, a dark minivan proceeds slowly toward the opening under the structure. Blue directional signage is visible overhead, and red chevron boards line the left barrier through a gentle bend.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car. The truck's reduced speed poses a risk of approaching too quickly, so the driver should slow down to maintain a safe following distance and avoid collision."}
{"id": "train_00330", "split": "train", "clip_key": "2020-0203-114632_018860_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "018860"}, "frames": ["2020-0203-114632_018860_movie_t-3.jpg", "2020-0203-114632_018860_movie_t-2.jpg", "2020-0203-114632_018860_movie_t-1.jpg", "2020-0203-114632_018860_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection with multiple lanes and good pavement appears ahead, and the ego car is stopped at the line in a red-painted bicycle box while cross traffic moves steadily. A cyclist directly ahead in the bike box is stationary in front of the ego car because the light is red, waiting to proceed. Several pedestrians cross the zebra crossing ahead in both directions, passing across the ego path under their walk phase. Cross-traffic vehicles, including a dump truck, a small van, and a motorcycle, travel left to right through the junction and hold priority, keeping the ego vehicle stopped. The traffic signal facing the ego shows red.", "hazard_reasoning": "There is a cyclist wearing a purple coat and stopped in front of the ego car, because of a red traffic light. The driver needs to halt immediately to avoid colliding with the stationary cyclist and comply with the red signal."}
{"id": "train_00331", "split": "train", "clip_key": "titan_clip_469_000408_movie", "source": {"subset": "titan", "scenario": "clip_469", "frame": "000408"}, "frames": ["titan_clip_469_000408_movie_t-3.jpg", "titan_clip_469_000408_movie_t-2.jpg", "titan_clip_469_000408_movie_t-1.jpg", "titan_clip_469_000408_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian in roadway", "environment_perception": "A narrow urban backstreet with interlocking block pavement lacks a centerline or median and has no marked sidewalks, so pedestrians share the roadway; traffic is light with no other vehicles visible. A man in a white shirt and dark pants carrying a bag walks in the middle of the road toward the ego vehicle, occupying its path and potentially constraining its pace. Farther ahead, two pedestrians proceed away along the center of the lane in front of the ego vehicle, continuing steadily in the same path. Another person stands near the left storefront edge, stationary just off the travelway and not affecting movement.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, carrying a bag, and walking in the middle of the road, towards the ego car, because there is no sidewalk. The driver should slow down to avoid colliding with a pedestrian walking in the roadway."}
{"id": "train_00332", "split": "train", "clip_key": "titan_clip_495_000420_movie", "source": {"subset": "titan", "scenario": "clip_495", "frame": "000420"}, "frames": ["titan_clip_495_000420_movie_t-3.jpg", "titan_clip_495_000420_movie_t-2.jpg", "titan_clip_495_000420_movie_t-1.jpg", "titan_clip_495_000420_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "In an urban corridor, the ego-vehicle proceeds along a straight two-way road with one lane each way divided by a solid yellow centerline; the dry pavement looks smooth and traffic is light. The oncoming lane remains clear as the view passes a bus stop shelter and roadside railings. On the right side of the road, a pedestrian in blue clothing walks along the curb inside the guardrail, close to the carriageway. On the left sidewalk near the bus stop, two pedestrians walk forward and stay on the sidewalk. Far ahead, a small white truck sits near the center of the lane and then creeps away in the same direction.", "hazard_reasoning": "There is a pedestrian in blue clothing, walking on the right side of the road. The pedestrian may step into the roadway unexpectedly, so the driver should be cautious of pedestrian ahead."}
{"id": "train_00333", "split": "train", "clip_key": "titan_clip_1136_000576_movie", "source": {"subset": "titan", "scenario": "clip_1136", "frame": "000576"}, "frames": ["titan_clip_1136_000576_movie_t-3.jpg", "titan_clip_1136_000576_movie_t-2.jpg", "titan_clip_1136_000576_movie_t-1.jpg", "titan_clip_1136_000576_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian's path.", "environment_perception": "An urban commercial street with a narrow two-way carriageway marked by a single white center line is seen under clear daylight; the smooth pavement and storefronts suggest light traffic with no signals in view. On the left edge near the curb, a pedestrian holds an umbrella and a handbag and walks toward the camera along the roadside, potentially entering the ego lane. A black sedan stands on the right side partly protruding into the travel lane, constricting the passage. Farther ahead, several pedestrians continue along both sidewalks, with one near the right curb pausing at the edge without stepping into the lane.", "hazard_reasoning": "There is a pedestrian wearing a yellow dress, carrying a handbag and an umbrella, and walking on the left side of the road, towards the ego car. The pedestrian is moving into the vehicle's path, so the driver should be aware of the pedestrian's path to avoid a potential collision."}
{"id": "train_00334", "split": "train", "clip_key": "titan_clip_174_000108_movie", "source": {"subset": "titan", "scenario": "clip_174", "frame": "000108"}, "frames": ["titan_clip_174_000108_movie_t-3.jpg", "titan_clip_174_000108_movie_t-2.jpg", "titan_clip_174_000108_movie_t-1.jpg", "titan_clip_174_000108_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the cyclist.", "environment_perception": "An urban neighborhood street with a very narrow two-way road and no median runs straight between closely spaced buildings; the pavement is smooth and traffic is light. The ego vehicle proceeds along the left side with no oncoming vehicles currently visible. Ahead in the center of the lane, a cyclist wearing a white shirt rides away from the camera at a steady pace, occupying the middle of the road and effectively setting the ego vehicle's speed. No salient traffic signals or speed signs are visible, and the curbs are clear of parked vehicles or obstacles.", "hazard_reasoning": "There is a cyclist wearing a white shirt, cycling in the middle of the road, away from the ego car. The cyclist occupies the vehicle's path and requires careful manoeuvring to avoid a collision."}
{"id": "train_00335", "split": "train", "clip_key": "2020-0218-103119_021659_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "021659"}, "frames": ["2020-0218-103119_021659_movie_t-3.jpg", "2020-0218-103119_021659_movie_t-2.jpg", "2020-0218-103119_021659_movie_t-1.jpg", "2020-0218-103119_021659_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban street with two same-direction lanes and a bollard-separated shoulder runs between high-rise buildings; the pavement is smooth and traffic is queued at a signal ahead. A white van is stopped directly in front in the ego lane, constraining the ego car's pace. A silver sedan slightly ahead to the left moves slowly in the adjacent lane, reducing space for a lane change. Several pedestrians wait on the right sidewalk near the intersection but remain off the roadway. A straight-ahead-only blue sign is visible above.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane. The stopped van poses a collision risk, so the driver should stop to avoid an accident."}
{"id": "train_00336", "split": "train", "clip_key": "titan_clip_1093_000360_movie", "source": {"subset": "titan", "scenario": "clip_1093", "frame": "000360"}, "frames": ["titan_clip_1093_000360_movie_t-3.jpg", "titan_clip_1093_000360_movie_t-2.jpg", "titan_clip_1093_000360_movie_t-1.jpg", "titan_clip_1093_000360_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "be cautious of cones ahead", "environment_perception": "A quiet urban residential street with a narrow two-way carriageway curves gently right, with dry, intact pavement and very light traffic; no oncoming vehicles appear. Ahead on the right, a white utility truck stands parked partly within the travel lane and remains stationary as the camera car nears, reducing the usable width. Traffic cones line the right side of the lane to channel around this roadside work area, and they continue past the truck. Coiled hoses and other equipment lie near the truck at the curb and extend toward the roadway, creating minor obstacles along the edge.", "hazard_reasoning": "There are traffic cones along the right side of the lane. These cones create a potential obstacle and lane narrowing, requiring the driver to be cautious and maintain proper lane positioning to avoid collision."}
{"id": "train_00337", "split": "train", "clip_key": "2020-0226-101332_070410_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "070410"}, "frames": ["2020-0226-101332_070410_movie_t-3.jpg", "2020-0226-101332_070410_movie_t-2.jpg", "2020-0226-101332_070410_movie_t-1.jpg", "2020-0226-101332_070410_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with three same-direction lanes runs under an elevated roadway; the pavement is smooth and traffic is moderate, bunching at a signalized intersection where vehicles are stopped. A gray van is directly ahead in the ego lane, stopped because the traffic light shows red, keeping the ego car stationary near the crosswalk. A small box truck waits slightly ahead in the left lane, aligned with the van and constraining forward movement. A pedestrian crosses the zebra crossing ahead from right to left during the red.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid a rear-end collision and comply with the red signal."}
{"id": "train_00338", "split": "train", "clip_key": "2020-0131-103016_011643_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "011643"}, "frames": ["2020-0131-103016_011643_movie_t-3.jpg", "2020-0131-103016_011643_movie_t-2.jpg", "2020-0131-103016_011643_movie_t-1.jpg", "2020-0131-103016_011643_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of merging motorcycle", "environment_perception": "An urban arterial with two same-direction lanes and a painted double-white center divider has smooth pavement and moderate, steady flow, with oncoming traffic on the right side. A black motorcycle ahead slightly left changes from the left lane into the ego lane because a slower vehicle blocks its path, briefly merging in front of the ego car. A box truck farther ahead in our direction moves slowly and sets the pace for following vehicles. Oncoming cars and a small truck pass on the opposite side without interacting. Overhead circular signs and large road markings indicate a 40 speed limit.", "hazard_reasoning": "There is a black motorcycle changing from the left lane to the ego lane because of another vehicle ahead on the road. You should adjust your speed and position to accommodate its merge and prevent a collision."}
{"id": "train_00339", "split": "train", "clip_key": "2020-0207-101955_017598_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "017598"}, "frames": ["2020-0207-101955_017598_movie_t-3.jpg", "2020-0207-101955_017598_movie_t-2.jpg", "2020-0207-101955_017598_movie_t-1.jpg", "2020-0207-101955_017598_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way arterial with one lane each direction and a curbside bay appears dry and well marked, and traffic is light. Ahead in the ego lane, a small green truck slows because a long white vehicle is parked in the bay along the left side of the road, narrowing the space and constraining the truck's pace. The parked vehicle remains stationary near the curb, creating a minor obstruction beside the ego lane. In the opposing lane to the right, a white van approaches and continues past as oncoming traffic without affecting the ego path. A roadside sign on the left shows a 50 km/h speed limit.", "hazard_reasoning": "There is a green truck slowing in the ego lane because of the parked vehicle ahead on the left side of the road. The truck's sudden deceleration requires the driver to follow the vehicle ahead to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_00340", "split": "train", "clip_key": "2020-0207-101955_069772_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "069772"}, "frames": ["2020-0207-101955_069772_movie_t-3.jpg", "2020-0207-101955_069772_movie_t-2.jpg", "2020-0207-101955_069772_movie_t-1.jpg", "2020-0207-101955_069772_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban divided arterial with two same-direction lanes is dry and smooth, separated from oncoming lanes by a low planted median, and traffic is generally moderate and moving. Ahead in the ego lane, there is a white hatchback stopped in front of the ego car, holding the lane and constraining the ego vehicle's pace. In the adjacent left lane, a white box truck continues forward at low speed slightly ahead of the ego position. To the right of the median, several trucks and cars approach as oncoming traffic without interacting with the ego lane. A delivery truck is parked along the left curb beside buildings but remains outside the travel lane.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car. The stopped vehicle ahead poses a collision risk if the driver continues without slowing, so the driver should stop immediately."}
{"id": "train_00341", "split": "train", "clip_key": "titan_clip_872_000060_movie", "source": {"subset": "titan", "scenario": "clip_872", "frame": "000060"}, "frames": ["titan_clip_872_000060_movie_t-3.jpg", "titan_clip_872_000060_movie_t-2.jpg", "titan_clip_872_000060_movie_t-1.jpg", "titan_clip_872_000060_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban two-way street with single lanes and no median runs between tall buildings; the pavement is clean and traffic is light. At the right edge near the camera, a white van is stopped partly in the roadway at the curb, reducing available width beside it. Farther ahead in the oncoming lane, a silver car advances toward the camera at low speed along its side of the street. On the left side, a pedestrian wearing a white shirt walks away from the ego car along the roadside, remaining clear of the lane. Bicycles and other parked items line the curbs.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking on the left side of the road, away from the ego car. This pedestrian could unexpectedly step into the lane, so the driver should remain vigilant to avoid a collision."}
{"id": "train_00342", "split": "train", "clip_key": "titan_clip_1057_000486_movie", "source": {"subset": "titan", "scenario": "clip_1057", "frame": "000486"}, "frames": ["titan_clip_1057_000486_movie_t-3.jpg", "titan_clip_1057_000486_movie_t-2.jpg", "titan_clip_1057_000486_movie_t-1.jpg", "titan_clip_1057_000486_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of the white van merging", "environment_perception": "An urban one-lane street with no center divider and smooth pavement runs between tall buildings, and traffic is light. Ahead in the ego lane, a white van moves slowly and steers slightly around roadside obstructions; it maneuvers in front of the ego car because vehicles are parked along the lane, which constrains the ego car's pace. On the right edge, two pedestrians walk ahead near the curb beside a taped-off sidewalk and partially encroach into the roadway, close to the ego path. No other moving vehicles are visible. A round no-parking sign is posted on a pole to the left. Cones and barriers line the right side, narrowing the usable lane.", "hazard_reasoning": "There is a white van maneuvering in front of the ego car, in the ego lane, because there are vehicles parked in the ego lane. The white van may merge unexpectedly to avoid the parked vehicles, so the driver should be aware of its movement."}
{"id": "train_00343", "split": "train", "clip_key": "titan_clip_1167_000018_movie", "source": {"subset": "titan", "scenario": "clip_1167", "frame": "000018"}, "frames": ["titan_clip_1167_000018_movie_t-3.jpg", "titan_clip_1167_000018_movie_t-2.jpg", "titan_clip_1167_000018_movie_t-1.jpg", "titan_clip_1167_000018_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial intersection opens into a narrow single-lane alley with brick paving and no divider; the surface is dry and traffic is light with vehicles moving away. On the left side of the intersection, a pedestrian in a blue shirt walks toward the ego vehicle near the crosswalk and could enter the lane. Ahead along the right edge, several pedestrians walk away beside storefronts and intermittently drift toward the roadway, remaining relevant to the ego path. Farther ahead, a scooter trails a small car in the center of the alley, moderating the pace of traffic. A pedestrian-crossing sign and a no-parking sign stand at the corner, and orange cones line the right sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking on the left side of the intersection, towards the ego car. The driver should manoeuvre carefully to avoid a potential collision with the pedestrian crossing their path."}
{"id": "train_00344", "split": "train", "clip_key": "2020-0127-132751_104536_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "104536"}, "frames": ["2020-0127-132751_104536_movie_t-3.jpg", "2020-0127-132751_104536_movie_t-2.jpg", "2020-0127-132751_104536_movie_t-1.jpg", "2020-0127-132751_104536_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "In an urban commercial area, the ego car is on a narrow left-hand-traffic two-lane road with a solid yellow centerline and dry, slightly worn pavement; traffic is light. A silver van stopped in the ego lane directly ahead, brake lights on, blocks the path and constrains the ego vehicle. An oncoming dark car in the right-side opposing lane approaches along the centerline and continues past without encroaching. A pedestrian on the right sidewalk walks beside a guardrail near storefronts, remaining off the roadway. Driveways to shops line both sides with some parked vehicles, but no other moving traffic is close.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car. The stopped van blocks the vehicle's path and could lead to a rear-end collision if you do not stop immediately."}
{"id": "train_00345", "split": "train", "clip_key": "2020-0206-101736_040713_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "040713"}, "frames": ["2020-0206-101736_040713_movie_t-3.jpg", "2020-0206-101736_040713_movie_t-2.jpg", "2020-0206-101736_040713_movie_t-1.jpg", "2020-0206-101736_040713_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane arterial runs between mid-rise buildings, with two lanes in each direction and only painted center lines; the pavement looks smooth and traffic is heavy and stop-and-go. A white sedan is stopped directly ahead in the ego lane because of congestion ahead, holding the ego vehicle. In the adjacent same-direction lane to the left, a small van ahead creeps forward in the queue, offering no faster flow. To the right, oncoming traffic in two lanes, including a truck and several vans, moves steadily toward the camera within its lanes, occupying the opposing side of the undivided road and limiting any rightward maneuver. No unusual obstacles or work zones are visible.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the halted vehicle."}
{"id": "train_00346", "split": "train", "clip_key": "titan_clip_1210_000276_movie", "source": {"subset": "titan", "scenario": "clip_1210", "frame": "000276"}, "frames": ["titan_clip_1210_000276_movie_t-3.jpg", "titan_clip_1210_000276_movie_t-2.jpg", "titan_clip_1210_000276_movie_t-1.jpg", "titan_clip_1210_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street is visible, brick-paved and narrow, without a median; motor traffic is light while pedestrian activity is heavy, and the pavement is in good condition. Two pedestrians, one in a black dress and one in a yellow shirt, walk ahead in the middle of the road away from the ego vehicle because the sidewalk is congested, occupying the ego path and constraining speed. An oncoming cyclist approaches along the right side, riding straight toward the camera and passing close to the right edge. Farther ahead on the right, a small white van waits at the curb, reducing clearance. Parked bicycles on the left and orange cones along both sides further narrow the available roadway.", "hazard_reasoning": "There are two pedestrians wearing a black dress and a yellow shirt, walking in the middle of the road, away from the ego car, because the sidewalk is congested. Slow down to avoid collision with pedestrians walking on the roadway."}
{"id": "train_00347", "split": "train", "clip_key": "2020-0213-143552_024264_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "024264"}, "frames": ["2020-0213-143552_024264_movie_t-3.jpg", "2020-0213-143552_024264_movie_t-2.jpg", "2020-0213-143552_024264_movie_t-1.jpg", "2020-0213-143552_024264_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop at the red light.", "environment_perception": "A dense urban multi-lane intersection with smooth pavement has no median, and the ego car is stopped at a red light while cross traffic flows. A black motorcycle waits directly ahead in the ego lane at the stop line because the signal is red, holding the ego position. Several pedestrians walk across the crosswalk from left to right in front of the ego path, continuing through the intersection and keeping the lane blocked. Vehicles from the right, including a dark SUV and a box truck, travel across the intersection ahead with the green and pass before the ego can proceed. Overhead traffic signals facing the ego approach display red.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego car, because of a red traffic light. The driver should stop to comply with the signal and maintain a safe distance to avoid collision."}
{"id": "train_00348", "split": "train", "clip_key": "2020-0206-101736_014006_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "014006"}, "frames": ["2020-0206-101736_014006_movie_t-3.jpg", "2020-0206-101736_014006_movie_t-2.jpg", "2020-0206-101736_014006_movie_t-1.jpg", "2020-0206-101736_014006_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban two-way street with two narrow lanes and no median runs between close-set buildings; the asphalt is smooth and traffic is light with no moving vehicles visible. The road rises slightly toward a marked crosswalk ahead. On the left ahead, a white truck with blue crates on its bed is parked partly in the lane, narrowing the ego path. Along the right edge, a pedestrian walks toward the camera near the curb, parallel to traffic and close to the roadway. By the left storefront next to the truck, another person stands at the sidewalk where they may step into the lane.", "hazard_reasoning": "There is a white truck with blue crates on it, parked on the left side of the road. The parked truck partially obstructs the sidewalk view, risking hidden pedestrians, so the driver should carefully manoeuvre around it."}
{"id": "train_00349", "split": "train", "clip_key": "titan_clip_513_000420_movie", "source": {"subset": "titan", "scenario": "clip_513", "frame": "000420"}, "frames": ["titan_clip_513_000420_movie_t-3.jpg", "titan_clip_513_000420_movie_t-2.jpg", "titan_clip_513_000420_movie_t-1.jpg", "titan_clip_513_000420_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban neighborhood street with a single narrow lane and shared-lane arrows runs straight toward an unsignalized zebra crossing; pavement is smooth and traffic is light with no moving vehicles. Buildings line both sides and there is no center divider. A man pushing a blue bin walks in the middle of the lane ahead toward the ego vehicle, directly in the path and constraining its approach to the crosswalk. A small group of pedestrians stands and walks along the left sidewalk near a storefront close to the crosswalk, some edging near the curb but staying off the roadway. Another pedestrian moves along the right sidewalk near the crosswalk, remaining clear of the lane. The zebra crossing is clearly marked, and blue cones and bollards border the approaches.", "hazard_reasoning": "There is a man pushing a blue bin and walking in the middle of the road, towards the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a collision as he is walking directly into the vehicle's path under clear visibility conditions."}
{"id": "train_00350", "split": "train", "clip_key": "2020-0131-103016_006623_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "006623"}, "frames": ["2020-0131-103016_006623_movie_t-3.jpg", "2020-0131-103016_006623_movie_t-2.jpg", "2020-0131-103016_006623_movie_t-1.jpg", "2020-0131-103016_006623_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban approach beneath elevated expressways runs on a single-lane left-side road with a right-hand barrier and dry, slightly worn pavement; traffic is light with a short queue at the signal ahead. A white motorcycle directly ahead in the ego lane is stopped for the red light, holding the ego car. A box truck just ahead along the left curb remains stationary near the junction, slightly narrowing the lane. Farther ahead under the flyover, several cars in the same direction wait at the intersection. The traffic signal facing the approach shows red, and a blue arrow sign indicates straight ahead only.", "hazard_reasoning": "There is a white motorcycle stopped in front of the ego car, because of a red traffic light. The ego-vehicle needs to stop to avoid a collision and comply with the traffic signal."}
{"id": "train_00351", "split": "train", "clip_key": "2020-0225-102455_043724_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "043724"}, "frames": ["2020-0225-102455_043724_movie_t-3.jpg", "2020-0225-102455_043724_movie_t-2.jpg", "2020-0225-102455_043724_movie_t-1.jpg", "2020-0225-102455_043724_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of merging vehicle", "environment_perception": "An urban two-way street with midrise buildings has one through lane for the ego vehicle plus a left bus bay, divided from oncoming lanes by a metal railing; the pavement is dry and traffic is moderate. Ahead left, a black minivan changes from the left lane into the ego lane, easing across the dashed line to take the space in front of the ego vehicle. Farther ahead in the ego lane, a white box truck proceeds at a modest speed and constrains the pace. To the right beyond the railing, oncoming cars including a taxi flow steadily without interacting with the ego path. A circular 60 speed-limit sign is visible on the left sidewalk.", "hazard_reasoning": "There is a black minivan changing from the left lane to the ego lane. The minivan is merging into your lane and could cut in unexpectedly, so you must stay alert to prevent a collision under this situation."}
{"id": "train_00352", "split": "train", "clip_key": "2020-0207-151349_033172_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "033172"}, "frames": ["2020-0207-151349_033172_movie_t-3.jpg", "2020-0207-151349_033172_movie_t-2.jpg", "2020-0207-151349_033172_movie_t-1.jpg", "2020-0207-151349_033172_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban road runs beneath an elevated expressway, and the ego vehicle travels in a single right-side lane bordered by a concrete barrier; the pavement is dry and overall traffic is heavy and slow with long queues ahead. A white sedan ahead in the ego lane is stopped, as congestion further forward halts movement and determines the ego car's pace. To the left, a line of same-direction vehicles including an SUV and a box truck stands in traffic alongside the ego path. On the separated roadway to the right, a few vehicles creep forward behind the barrier without interacting with the ego lane. Reflective bollards and a chevron-marked barrier narrow the shoulder at the right edge.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid collision with the stationary vehicle."}
{"id": "train_00353", "split": "train", "clip_key": "titan_clip_669_000306_movie", "source": {"subset": "titan", "scenario": "clip_669", "frame": "000306"}, "frames": ["titan_clip_669_000306_movie_t-3.jpg", "titan_clip_669_000306_movie_t-2.jpg", "titan_clip_669_000306_movie_t-1.jpg", "titan_clip_669_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial street with a single narrow lane in the ego direction, no median, smooth pavement, and light traffic. Ahead on the left, a small flatbed truck is stopped partly in the ego lane and along the curb, constraining the ego vehicle's path. Near this truck on the left side of the road, a person in a green shirt and blue pants walks away from the ego vehicle along the edge because of the parked vehicle, moving close to the travel space and potentially entering it. Farther ahead a few pedestrians are visible on the distant sidewalk without affecting the lane. A posted 30 speed limit sign is on the left, and a parking sign stands on the right.", "hazard_reasoning": "There is a man wearing a green t-shirt and blue pants and walking on the left side of the road, away from the ego car, because of the parked vehicle. The driver should carefully manoeuvre around the pedestrian since the parked truck forces him into the travel lane, increasing collision risk."}
{"id": "train_00354", "split": "train", "clip_key": "titan_clip_548_000342_movie", "source": {"subset": "titan", "scenario": "clip_548", "frame": "000342"}, "frames": ["titan_clip_548_000342_movie_t-3.jpg", "titan_clip_548_000342_movie_t-2.jpg", "titan_clip_548_000342_movie_t-1.jpg", "titan_clip_548_000342_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban one-lane street with no median and smooth pavement shows very light vehicle traffic but many pedestrians. Two pedestrians in white T-shirts with backpacks walk away from the ego vehicle in the middle of the road ahead, occupying the travel path and effectively setting the pace. On the right near the foreground, a pedestrian walks toward the camera along the roadway edge, close to the curb as the ego approaches. At the left curb, an adult with a stroller lingers by the edge without entering the lane. Blue roadside signs on the left indicate a parking restriction, a pedestrian warning, and a rightward directional arrow.", "hazard_reasoning": "There are two pedestrians carrying backpacks, wearing white t-shirts, and walking in the middle of the road, away from the ego car. The driver should slow down because pedestrians walking unpredictably in the lane pose a collision risk."}
{"id": "train_00355", "split": "train", "clip_key": "titan_clip_485_000120_movie", "source": {"subset": "titan", "scenario": "clip_485", "frame": "000120"}, "frames": ["titan_clip_485_000120_movie_t-3.jpg", "titan_clip_485_000120_movie_t-2.jpg", "titan_clip_485_000120_movie_t-1.jpg", "titan_clip_485_000120_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single left-side lane and no divider runs between buildings and a construction wall; the pavement is dry and traffic is light. A pedestrian in a black T-shirt and pants walks away from the ego vehicle in the middle of the lane because the sidewalk is crowded with other pedestrians, directly occupying the ego path. A dark sedan stands at the right curb partly intruding into the lane, further narrowing the passage around the pedestrian. Other pedestrians move along the left sidewalk near the building, remaining off the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and pants, walking in the middle of the road, away from the ego car, because the sidewalk is taken up by other pedestrians. The driver should slow down to avoid colliding with the pedestrian in the roadway."}
{"id": "train_00356", "split": "train", "clip_key": "2020-0205-152530_050020_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "050020"}, "frames": ["2020-0205-152530_050020_movie_t-3.jpg", "2020-0205-152530_050020_movie_t-2.jpg", "2020-0205-152530_050020_movie_t-1.jpg", "2020-0205-152530_050020_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs between mid-rise buildings; the pavement is dry and slightly worn, and traffic moves at a moderate pace. Ahead in the ego lane, a white box truck slows and constrains the car's speed. Slightly ahead to the right, a large silver cargo truck travels slowly in the right lane, keeping close to the ego vehicle's path and reducing passing space. Farther ahead in the center lane, another small truck continues straight at a steady speed. No signal aspect is clearly visible, and no oncoming traffic appears in the frame.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. You should slow down to maintain a safe distance and avoid a collision with the decelerating truck."}
{"id": "train_00357", "split": "train", "clip_key": "2020-0220-102630_077127_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "077127"}, "frames": ["2020-0220-102630_077127_movie_t-3.jpg", "2020-0220-102630_077127_movie_t-2.jpg", "2020-0220-102630_077127_movie_t-1.jpg", "2020-0220-102630_077127_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement and no visible physical median carries moderate same-direction traffic toward an elevated roadway. A white van ahead in the ego lane continues straight through the green light, setting the pace for the ego car. To the right, a silver hatchback slightly ahead accelerates in the adjacent lane while remaining parallel to the ego path. Farther right, a blue sedan advances with the flow and holds its lane.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane, because of the green traffic light. The driver should follow the vehicle ahead to maintain safe distance and comply with the traffic signal."}
{"id": "train_00358", "split": "train", "clip_key": "titan_clip_1303_000570_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1303_000570_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1303_000570_movie_t-3_augB1.jpg", "titan_clip_1303_000570_movie_t-2_augB1.jpg", "titan_clip_1303_000570_movie_t-1_augB1.jpg", "titan_clip_1303_000570_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the unloading pedestrian", "environment_perception": "An urban commercial street with a single narrow lane curves right into a small junction, with no median and stone paving in good condition; traffic is light and slow. On the left beside the ego lane, a pedestrian wearing a black shirt stands next to a parked blue flatbed truck unloading boxes, remaining close to the roadway and potentially encroaching on the lane. Ahead in the junction, a white box truck moves left to right across the ego path, temporarily blocking progress. Farther ahead at the right curb, another white truck is stopped near the corner, positioned to enter the lane after the crossing. Short bollards line the right sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, standing on the left side of the road, because they are unloading their parked vehicle. The driver should carefully manoeuvre around the unloading pedestrian to avoid a collision and ensure safety."}
{"id": "train_00359", "split": "train", "clip_key": "titan_clip_811_000582_movie", "source": {"subset": "titan", "scenario": "clip_811", "frame": "000582"}, "frames": ["titan_clip_811_000582_movie_t-3.jpg", "titan_clip_811_000582_movie_t-2.jpg", "titan_clip_811_000582_movie_t-1.jpg", "titan_clip_811_000582_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist ahead", "environment_perception": "An urban two-way street with closely packed buildings and smooth pavement curves gently right, with no median and light traffic. A cyclist in a white T-shirt rides toward the ego vehicle near the center of the roadway, approaching as oncoming traffic and reducing space in the ego lane. On the left edge, a pedestrian walks along the curb near the travel lane, adjacent to the ego path. On the right, a silver box truck is stopped in a driveway with its nose at the curb, slightly narrowing the roadway near that entrance. No signal heads or speed signs are prominent.", "hazard_reasoning": "There is a cyclist wearing a white T-shirt, cycling towards the ego car. The cyclist may enter your lane from the left, so you should be aware to maintain a safe distance and avoid collision."}
{"id": "train_00360", "split": "train", "clip_key": "titan_clip_1322_000522_movie", "source": {"subset": "titan", "scenario": "clip_1322", "frame": "000522"}, "frames": ["titan_clip_1322_000522_movie_t-3.jpg", "titan_clip_1322_000522_movie_t-2.jpg", "titan_clip_1322_000522_movie_t-1.jpg", "titan_clip_1322_000522_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around her", "environment_perception": "A narrow urban street with a single shared lane and no centerline runs straight between low-rise buildings, bordered by bollards and narrow paved shoulders. The pavement is smooth and dry, and traffic is extremely light with no moving vehicles throughout. On the right edge near the ego path, a woman wearing a black jumpsuit and carrying a tote bag walks away from the camera along the shoulder, close enough to the roadway that she could step into the lane. Convex safety mirrors and a blue pedestrian sign are posted on a pole to the right. Parked bicycles line the left side.", "hazard_reasoning": "There is a woman wearing a black jumpsuit, carrying a tote bag, and walking on the right side of the road, away from the ego car. The driver should manoeuvre carefully around her to maintain a safe distance and prevent a possible collision if she steps off the curb."}
{"id": "train_00361", "split": "train", "clip_key": "titan_clip_377_000576_movie", "source": {"subset": "titan", "scenario": "clip_377", "frame": "000576"}, "frames": ["titan_clip_377_000576_movie_t-3.jpg", "titan_clip_377_000576_movie_t-2.jpg", "titan_clip_377_000576_movie_t-1.jpg", "titan_clip_377_000576_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the walking pedestrian.", "environment_perception": "An urban shopping street with a single narrow shared lane and block paving runs between storefronts; there is no centerline or divider, and no vehicular traffic is visible. The pavement appears smooth, and movement is slow due to pedestrians. A man in a white T-shirt ahead walks away from the ego vehicle along the middle of the roadway, using the ego lane because other pedestrians occupy the side walkway, so he remains directly in the path. Several people farther ahead on both sides stroll and intermittently cross, keeping to the travelway and potentially entering the ego path. On the right foreground, a man in a white shirt walks toward the camera at the curb, passing close to the lane. Parked bicycles and small cones line the edges.", "hazard_reasoning": "There is a man wearing a white t-shirt walking away from the ego car in the ego lane, because there are other pedestrians in the pedestrian lane. The pedestrian occupies the driving lane and could be struck unless the driver maneuvers carefully around the walking pedestrian."}
{"id": "train_00362", "split": "train", "clip_key": "2020-0225-145150_027838_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-145150_027838_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-145150_027838_movie_t-3_augB1.jpg", "2020-0225-145150_027838_movie_t-2_augB1.jpg", "2020-0225-145150_027838_movie_t-1_augB1.jpg", "2020-0225-145150_027838_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction and one oncoming lane is divided by solid double white lines; the pavement is dry and smooth and traffic is light to moderate with steady flow. Ahead in the ego lane, a small blue truck slows and queues, constraining the ego vehicle because of traffic congestion ahead. Farther ahead in the same lane, a white van continues at a slower pace behind other vehicles, reinforcing the buildup. To the right of the divider, an oncoming white sedan approaches smoothly without interacting. An overhead gantry sign is visible but not active.", "hazard_reasoning": "There is a blue truck slowing in the ego-car lane because of traffic congestion ahead. The driver should slow down to match traffic speed and maintain a safe following distance."}
{"id": "train_00363", "split": "train", "clip_key": "titan_clip_956_000408_movie", "source": {"subset": "titan", "scenario": "clip_956", "frame": "000408"}, "frames": ["titan_clip_956_000408_movie_t-3.jpg", "titan_clip_956_000408_movie_t-2.jpg", "titan_clip_956_000408_movie_t-1.jpg", "titan_clip_956_000408_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down for approaching pedestrian", "environment_perception": "A narrow urban one-way street runs between tall buildings with no divider and smooth pavement, and traffic is light. A large box truck ahead in the ego lane is stopped with its rear doors open for unloading, narrowing the passage and constraining the ego vehicle's pace. On the left near the camera, a person pushes a blue flatbed trolley toward the roadway, moving rightward and potentially entering the ego lane. On the right sidewalk ahead, a pedestrian wearing a yellow shirt and blue skirt and carrying an umbrella walks toward the ego car along the curb, close to the truck and near the travel lane. A parked bicycle rests by the right wall, with no traffic signals visible.", "hazard_reasoning": "There is a pedestrian, wearing a yellow shirt and blue skirt, and carrying an umbrella, walking towards the ego car on the right side of the road. The pedestrian may step into the roadway unexpectedly, so the driver should slow down to maintain a safe distance."}
{"id": "train_00364", "split": "train", "clip_key": "2020-0207-151349_000054_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "000054"}, "frames": ["2020-0207-151349_000054_movie_t-3.jpg", "2020-0207-151349_000054_movie_t-2.jpg", "2020-0207-151349_000054_movie_t-1.jpg", "2020-0207-151349_000054_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban scene on a multi-lane two-way road with a painted median and smooth pavement; traffic is heavy and slows to a crawl, with long oncoming queues to the right. A black sedan is stopped directly ahead in the ego lane because of congestion, temporarily holding the ego vehicle. A small hatchback farther ahead in the same lane inches forward in the queue and sets the pace. To the right, a line of vans and cars in the oncoming lanes advances slowly toward the camera but remains separated by the double white lines.", "hazard_reasoning": "There is a black sedan stopped in the front of the ego car, in the ego lane, because of the traffic congestion ahead. The driver should stop to avoid colliding with the stationary vehicle amid slowed traffic."}
{"id": "train_00365", "split": "train", "clip_key": "titan_clip_3_000186_movie", "source": {"subset": "titan", "scenario": "clip_3", "frame": "000186"}, "frames": ["titan_clip_3_000186_movie_t-3.jpg", "titan_clip_3_000186_movie_t-2.jpg", "titan_clip_3_000186_movie_t-1.jpg", "titan_clip_3_000186_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego vehicle's direction runs between tall buildings, separated from opposite traffic by a low metal-and-concrete median; the pavement is dry and smooth, and traffic is moderate with a brief slowdown ahead in the left lane. Ahead in the left lane, a white SUV slows behind a short queue at the curb, constraining the ego vehicle's pace. Farther ahead in the right lane, a yellow car continues straight at a steady speed, passing the slower line and remaining clear of the ego lane. On the near left, a black van is stopped at the curb, parked and narrowing the usable edge of the lane.", "hazard_reasoning": "There is a red sedan stopped in the left lane because of the pedestrian on the left side of the road. The red sedan has halted unexpectedly to yield to the pedestrian, so you should slow down to maintain a safe distance and be prepared to stop."}
{"id": "train_00366", "split": "train", "clip_key": "2020-0204-150838_083895_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "083895"}, "frames": ["2020-0204-150838_083895_movie_t-3.jpg", "2020-0204-150838_083895_movie_t-2.jpg", "2020-0204-150838_083895_movie_t-1.jpg", "2020-0204-150838_083895_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "A suburban divided road with two same-direction lanes runs beside a raised structure and guardrail on the right; the pavement is dry and smooth, and traffic is heavy and compressing. A black hatchback directly ahead in the ego lane stops because of congestion, holding the ego vehicle. In the adjacent left lane ahead, two large box trucks move slowly in a tight queue, constraining the flow and limiting openings. Farther ahead, additional vehicles in both lanes are bunched and near-stationary, maintaining the slowdown.", "hazard_reasoning": "There is a black hatchback stopping in the ego lane, in front of the ego car, because of traffic congestion ahead. The black hatchback's sudden stop due to congestion poses a rear-end collision risk, so the driver should stop to maintain a safe distance and avoid impact."}
{"id": "train_00367", "split": "train", "clip_key": "titan_clip_445_000450_movie", "source": {"subset": "titan", "scenario": "clip_445", "frame": "000450"}, "frames": ["titan_clip_445_000450_movie_t-3.jpg", "titan_clip_445_000450_movie_t-2.jpg", "titan_clip_445_000450_movie_t-1.jpg", "titan_clip_445_000450_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial backstreet with a narrow single lane paved with interlocking bricks has no divider and light vehicle flow; the road climbs slightly and bright glare reduces contrast. A white box truck is stopped along the right edge ahead, encroaching into the lane and constraining the ego vehicle's path. A person stands near the rear of the truck on the right shoulder, moving slowly close to the lane and potentially stepping into it. On the left margin near the ego car, a pedestrian wearing a cap and a white shirt walks away along the curb. Farther up the street another pedestrian crosses toward the left, briefly entering the path. Orange cones line the left storefronts and narrow the usable width.", "hazard_reasoning": "There is a pedestrian wearing a cap and a white shirt, walking on the left side of the road, away from the ego car. This pedestrian may suddenly turn or cross back into the street, and visibility is reduced by the parked truck, so you should slow down to avoid a potential collision."}
{"id": "train_00368", "split": "train", "clip_key": "2020-0220-102630_098667_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "098667"}, "frames": ["2020-0220-102630_098667_movie_t-3.jpg", "2020-0220-102630_098667_movie_t-2.jpg", "2020-0220-102630_098667_movie_t-1.jpg", "2020-0220-102630_098667_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth asphalt runs past midrise buildings, with a metal fence divider on the right; traffic moves at a moderate pace. A small white flatbed truck covered with a tarp travels ahead in the ego lane, moving away and effectively setting the ego car's speed. To the left, a city bus runs slightly ahead in the adjacent lane, continuing straight and loosely pacing alongside. On the other side of the right-hand fence, a large tanker truck proceeds in the parallel lane, remaining separated and not affecting the ego path. An overhead blue sign directs straight toward Soka 4 km, Kasukabe 18 km, and Utsunomiya 94 km.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. Since the truck is moving away and the lane is clear, it is safe for the driver to proceed."}
{"id": "train_00369", "split": "train", "clip_key": "titan_clip_1336_000306_movie", "source": {"subset": "titan", "scenario": "clip_1336", "frame": "000306"}, "frames": ["titan_clip_1336_000306_movie_t-3.jpg", "titan_clip_1336_000306_movie_t-2.jpg", "titan_clip_1336_000306_movie_t-1.jpg", "titan_clip_1336_000306_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single shared lane and no median runs between shops; the pavement is smooth and traffic is light with no moving vehicles close by. A pedestrian in a white shirt pushes a trolley toward the camera along the middle of the road, approaching the ego lane and constraining speed. Slightly nearer, another pedestrian crosses the lane from right to left ahead, continuing at a steady walk and briefly occupying the path. Farther ahead a small car sits near the left edge and remains distant. Parked bicycles and a scooter line the right side, while delivery racks and boxes on the left encroach into the roadway, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, pushing a trolley in the middle of the road, towards the ego car. The driver should slow down to avoid a collision with the pedestrian entering the lane unexpectedly."}
{"id": "train_00370", "split": "train", "clip_key": "titan_clip_1242_000552_movie", "source": {"subset": "titan", "scenario": "clip_1242", "frame": "000552"}, "frames": ["titan_clip_1242_000552_movie_t-3.jpg", "titan_clip_1242_000552_movie_t-2.jpg", "titan_clip_1242_000552_movie_t-1.jpg", "titan_clip_1242_000552_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban residential street with a single narrow two-way carriageway and no centerline comes into view; the ego vehicle proceeds along the left side on smooth but tight pavement, with traffic light to nonexistent. The road curves slightly right toward a small junction ahead, and construction cones line both sides, with scaffolding covering a building on the left, narrowing the edge. A tall pedestrian in a white T-shirt and black pants carrying a handbag walks toward the ego car along the left side of the roadway, moving partly within the lane and potentially entering the vehicle's path. No other vehicles or cyclists are visible, and no active traffic signals appear.", "hazard_reasoning": "The tall pedestrian in a white t-shirt and black pants, with a handbag, is walking on the left side of the road, towards the ego car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should manoeuvre carefully around them."}
{"id": "train_00371", "split": "train", "clip_key": "2020-0129-105040_000109_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "000109"}, "frames": ["2020-0129-105040_000109_movie_t-3.jpg", "2020-0129-105040_000109_movie_t-2.jpg", "2020-0129-105040_000109_movie_t-1.jpg", "2020-0129-105040_000109_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial approaches a junction with a cross street and a zebra crossing; the asphalt looks dry and smooth and traffic is light. A white flatbed truck crosses ahead from left to right on the cross street, moving steadily across the ego vehicle's path and briefly blocking the forward view. A pedestrian on the left sidewalk walks along the fence parallel to the roadway, staying clear of the carriageway. Another person waits by a bicycle near the left curb without entering the road. A blue parking sign stands on the left verge, and no median is visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00372", "split": "train", "clip_key": "2020-0210-101957_039324_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "039324"}, "frames": ["2020-0210-101957_039324_movie_t-3.jpg", "2020-0210-101957_039324_movie_t-2.jpg", "2020-0210-101957_039324_movie_t-1.jpg", "2020-0210-101957_039324_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with two through lanes and a separate right-turn pocket lies ahead; the pavement is dry and smooth, and traffic is moderate as vehicles queue at a signalized intersection. A black hatchback directly ahead in the ego lane is stopped at the line for a red light, holding the ego vehicle. A light blue truck in the left lane waits beside it, remaining in its lane without encroaching. Cross-street traffic moves through the junction from right to left, influencing the stop phase for our direction. Overhead traffic signals facing the ego approach show red.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver must stop to avoid rear-ending the halted vehicle at the red light."}
{"id": "train_00373", "split": "train", "clip_key": "titan_clip_953_000348_movie", "source": {"subset": "titan", "scenario": "clip_953", "frame": "000348"}, "frames": ["titan_clip_953_000348_movie_t-3.jpg", "titan_clip_953_000348_movie_t-2.jpg", "titan_clip_953_000348_movie_t-1.jpg", "titan_clip_953_000348_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way street with no median and patched pavement runs between midrise buildings, and traffic is light. A large box truck is stopped ahead in the ego lane near the left curb, narrowing the available lane. A pedestrian wearing a gray coat and black pants walks toward the camera along the left edge of the road beside a construction fence and may step into the ego lane. Another pedestrian stands at the right curb by a building and bicycles, waiting without entering the roadway. Construction worksites with barriers line the left side, creating a constrained corridor but no active traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a gray coat and black pants and walking on the left side of the road towards the ego car. The pedestrian's movement toward the vehicle, combined with the partially obstructed view of the right lane, increases collision risk and requires careful maneuvering around the pedestrian."}
{"id": "train_00374", "split": "train", "clip_key": "2020-0205-103411_094007_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "094007"}, "frames": ["2020-0205-103411_094007_movie_t-3.jpg", "2020-0205-103411_094007_movie_t-2.jpg", "2020-0205-103411_094007_movie_t-1.jpg", "2020-0205-103411_094007_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban arterial with three same-direction lanes and smooth pavement shows heavy, stop-and-go flow, with no physical median visible in frame. Directly ahead in the ego lane, a white light truck is stopped with a long ladder protruding from its bed, halted by congestion ahead and holding the ego car at a standstill. In the adjacent left lane, a white van and several cars queue alongside, creeping forward and keeping pace with the stoppage, limiting room to merge. To the right, the right-turn lane looks relatively open as occasional vehicles move past the queue, but they do not enter the ego lane. Overhead gantry signs appear in the distance.", "hazard_reasoning": "There is a white truck stopped in the ego lane in front of the ego car, because of traffic congestion ahead. Therefore, the driver must stop to avoid rear-ending the halted truck due to the congestion."}
{"id": "train_00375", "split": "train", "clip_key": "titan_clip_1129_000462_movie", "source": {"subset": "titan", "scenario": "clip_1129", "frame": "000462"}, "frames": ["titan_clip_1129_000462_movie_t-3.jpg", "titan_clip_1129_000462_movie_t-2.jpg", "titan_clip_1129_000462_movie_t-1.jpg", "titan_clip_1129_000462_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist ahead", "environment_perception": "A quiet urban two-way street with a single narrow mixed-traffic lane and red shoulder lanes runs straight between shops and a riverside fence; the pavement is smooth and traffic is light. A cyclist wearing a black T-shirt rides toward the ego vehicle along the left side, approaching the lane and potentially entering the ego path. A pedestrian on the right edge walks toward the camera along the red shoulder, close to the travel lane and narrowing clearance. No notable signals or signs are visible, and there are no parked vehicles or other obstacles.", "hazard_reasoning": "There is a cyclist wearing a black t-shirt, cycling at the left side of the road, toward the ego car. The cyclist is approaching the vehicle's path, so the driver should be aware and adjust speed or trajectory to maintain safety."}
{"id": "train_00376", "split": "train", "clip_key": "2020-0127-132751_104371_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0127-132751_104371_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0127-132751_104371_movie_t-3_augB1.jpg", "2020-0127-132751_104371_movie_t-2_augB1.jpg", "2020-0127-132751_104371_movie_t-1_augB1.jpg", "2020-0127-132751_104371_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane in each direction runs ahead, marked by a solid yellow centerline; the pavement is dry and in fair condition, and overall traffic is light but briefly slows. The ego car follows a silver microvan in the left-hand lane that brakes and stops, constraining the ego vehicle's pace. A woman wearing a beige jacket and black pants steps off the right curb and jaywalks left across the ego lane in front of the ego car while holding a tote bag, prompting the stop. The oncoming lane to the right stays mostly clear. Storefronts and driveways line both sides, with a guardrail and parked bicycles on the right.", "hazard_reasoning": "There is a woman wearing a beige jacket and black pants, holding a tote bag, and jaywalking in front of the ego car, from the right side to the left side. The driver should stop immediately to avoid colliding with her."}
{"id": "train_00377", "split": "train", "clip_key": "2020-0225-102455_021734_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_021734_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_021734_movie_t-3_augB1.jpg", "2020-0225-102455_021734_movie_t-2_augB1.jpg", "2020-0225-102455_021734_movie_t-1_augB1.jpg", "2020-0225-102455_021734_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with a single narrow lane each way and no median; pavement is dry, and traffic is heavy and crawling. A silver sedan directly ahead in the ego lane slows to a crawl because a queue forms ahead, keeping the ego car at low speed. Farther ahead, a black van in the same lane is stopped near the curb and blocks the lane, shaping the congestion. To the right, oncoming traffic including a white truck queues in its lane and passes slowly beside the line of cars. A 10 speed limit sign and no-stopping signs are posted at the corner, with a zebra crosswalk at the side street.", "hazard_reasoning": "There is a silver sedan slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should follow the vehicle ahead to maintain a safe distance and adapt to the slower traffic conditions."}
{"id": "train_00378", "split": "train", "clip_key": "2020-0214-102601_010634_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "010634"}, "frames": ["2020-0214-102601_010634_movie_t-3.jpg", "2020-0214-102601_010634_movie_t-2.jpg", "2020-0214-102601_010634_movie_t-1.jpg", "2020-0214-102601_010634_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban arterial with one lane in the ego direction and two oncoming lanes runs between mid-rise buildings, with no physical median and dry, well-marked pavement; traffic is moderate. The ego car proceeds in the left lane. A gray hatchback ahead in the ego lane slows in front of us, constraining our pace. To the right, a black sedan in the near oncoming lane approaches steadily, while a white minivan advances beside it in the outer oncoming lane, both remaining in their lanes. On the left sidewalk at a bus stop, several pedestrians wait behind a guardrail, and a dark van stands at the curb near them. An overhead sign indicates a 40 km/h limit.", "hazard_reasoning": "There is a gray hatchback that is slowing in the ego lane, in front of the ego car. Because the gray hatchback ahead is reducing speed, the driver should slow down to maintain safe distance."}
{"id": "train_00379", "split": "train", "clip_key": "2020-0204-150838_071941_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "071941"}, "frames": ["2020-0204-150838_071941_movie_t-3.jpg", "2020-0204-150838_071941_movie_t-2.jpg", "2020-0204-150838_071941_movie_t-1.jpg", "2020-0204-150838_071941_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway with three same-direction lanes runs under elevated structures, bounded by a concrete barrier on the right; the pavement is smooth and traffic is moderate with intermittent slowing. A red container truck is directly ahead in the ego lane and slows because of traffic congestion ahead, setting the ego vehicle's pace. In the adjacent left lane, a loaded flatbed truck travels slightly ahead at a steady speed, remaining parallel to the ego lane. On the far-left lane, a small silver car moves forward near the ego vehicle. An overhead guide sign indicates Kasai 600 m ahead.", "hazard_reasoning": "There is a red truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain safe distance and avoid a rear-end collision."}
{"id": "train_00380", "split": "train", "clip_key": "2020-0220-151845_036488_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "036488"}, "frames": ["2020-0220-151845_036488_movie_t-3.jpg", "2020-0220-151845_036488_movie_t-2.jpg", "2020-0220-151845_036488_movie_t-1.jpg", "2020-0220-151845_036488_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway with smooth reddish pavement and clear lane markings; all three lanes move in the same direction and traffic flows moderately toward a signalized intersection. A red truck drives ahead in the ego lane, proceeding straight on the green light and setting the ego car's pace. Slightly ahead to the right, a silver kei car keeps to the right lane at similar speed, edging a little left after the crosswalk but remaining clear of the ego path. A dark sedan passes on the far right and continues forward. No obstacles or work zones are visible.", "hazard_reasoning": "There is a red truck driving in front of the ego car in the ego lane, because of the green traffic light. The driver should be aware of the truck ahead to maintain safe following distance and anticipate any unexpected maneuvers."}
{"id": "train_00381", "split": "train", "clip_key": "2020-0129-144857_080743_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "080743"}, "frames": ["2020-0129-144857_080743_movie_t-3.jpg", "2020-0129-144857_080743_movie_t-2.jpg", "2020-0129-144857_080743_movie_t-1.jpg", "2020-0129-144857_080743_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth asphalt and a hatched buffer to the right runs straight, and traffic in the ego direction is heavy and stop-and-go. A white sedan directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. To the left, a red city bus and a flatbed truck wait in parallel queues, barely moving and limiting space for lane changes. On the right, a black sedan proceeds slowly in the adjacent lane beyond the hatched area, creeping past the queue. An overhead traffic signal stands at the intersection ahead with vehicles stacked beneath it.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid rear-ending the halted sedan."}
{"id": "train_00382", "split": "train", "clip_key": "titan_clip_1132_000318_movie", "source": {"subset": "titan", "scenario": "clip_1132", "frame": "000318"}, "frames": ["titan_clip_1132_000318_movie_t-3.jpg", "titan_clip_1132_000318_movie_t-2.jpg", "titan_clip_1132_000318_movie_t-1.jpg", "titan_clip_1132_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of the pedestrian", "environment_perception": "An urban scene unfolds on a very narrow one-lane road with no centerline, bordered by buildings and a wall; the pavement is smooth, vehicle traffic is light, and pedestrian activity is heavy. Ahead along the left edge, a pedestrian in a white T-shirt and navy trousers walks away in the roadway because the sidewalk is crowded, remaining within the ego lane. In the middle distance, a man at the right edge pauses while a small dog walks along the center of the lane away from the vehicle, occupying the path. On the far left, a small group stands close to the lane by a doorway, narrowing the passage and leaving limited space as additional pedestrians appear farther ahead under the trees.", "hazard_reasoning": "There is a pedestrian male wearing a white tee shirt and navy blue trousers, walking away from the ego vehicle, on the left side of the road, because there are people on the sidewalk. The driver should be aware of the pedestrian walking close to the road edge, as he may step into the vehicle's path unexpectedly for safety or to avoid others on the sidewalk."}
{"id": "train_00383", "split": "train", "clip_key": "2020-0206-101736_001597_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-101736_001597_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-101736_001597_movie_t-3_augB1.jpg", "2020-0206-101736_001597_movie_t-2_augB1.jpg", "2020-0206-101736_001597_movie_t-1_augB1.jpg", "2020-0206-101736_001597_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-lane two-way street approaches a rail overpass, the pavement dry and slightly worn, with no median. Traffic is light as the ego vehicle proceeds in the left lane while parked vehicles line both curbs. Ahead near the overpass, a pedestrian in a black coat wearing a white mask crosses from left to right in front of the ego car, prompting the ego to slow. A white box truck ahead in the same lane moves slowly under the bridge and limits the pace. Oncoming vehicles travel in the right lane beyond the center line and pass steadily with clear separation. Cones and a scooter stopped at the left curb further narrow the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a black coat and a white mask, crossing the street in front of the ego-car, from the left side to the right side. The driver should carefully manoeuvre around the pedestrian to prevent an accident."}
{"id": "train_00384", "split": "train", "clip_key": "2020-0204-150838_061834_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "061834"}, "frames": ["2020-0204-150838_061834_movie_t-3.jpg", "2020-0204-150838_061834_movie_t-2.jpg", "2020-0204-150838_061834_movie_t-1.jpg", "2020-0204-150838_061834_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs under an elevated expressway, the pavement is good, and traffic is heavy and slow. A white box truck is directly ahead in the ego lane and creeps forward, constraining the ego's pace. To the left, a gray van edges out from the curb and cuts into the ego lane ahead, taking advantage of a gap. On the right, a large dump truck moves alongside in the neighboring lane at a similar slow speed, close to the ego vehicle. Overhead blue direction signs indicate Chiba and Tatsumi and show Route 357.", "hazard_reasoning": "There is a gray van cutting into the ego lane, in front of the ego car, because there was space in the ego lane. Drivers should slow down to maintain safe distance and account for unpredictable merges."}
{"id": "train_00385", "split": "train", "clip_key": "2020-0131-135401_088768_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "088768"}, "frames": ["2020-0131-135401_088768_movie_t-3.jpg", "2020-0131-135401_088768_movie_t-2.jpg", "2020-0131-135401_088768_movie_t-1.jpg", "2020-0131-135401_088768_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and no median approaches a signalized intersection on dry, smooth pavement, and traffic compresses into a slow, heavy queue. A white van directly ahead in the ego lane slows for congestion and constrains the ego car's pace. A red bus slightly ahead to the right creeps forward in the adjacent middle lane, limiting room for lateral movement. A gray truck farther right also eases toward the stop line in its lane. Overhead traffic lights and a pedestrian overpass span the junction. Two small traffic cones stand near the center of the crosswalk by the bus, posing a minor obstruction. Pedestrians wait on the left sidewalk near the corner shop.", "hazard_reasoning": "There is a white van slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid collision due to the reduced speed of traffic ahead."}
{"id": "train_00386", "split": "train", "clip_key": "titan_clip_206_000906_movie", "source": {"subset": "titan", "scenario": "clip_206", "frame": "000906"}, "frames": ["titan_clip_206_000906_movie_t-3.jpg", "titan_clip_206_000906_movie_t-2.jpg", "titan_clip_206_000906_movie_t-1.jpg", "titan_clip_206_000906_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial side street with paving blocks forms a single shared lane with no median, and traffic is light and slow due to the constrained width. A small white van ahead in the center of the lane moves away from the ego vehicle, setting a gentle pace. On the right side, a man wearing black pants and a white shirt walks away from the ego car along the edge of the roadway. Several trucks are parked along the left curb and partly intrude into the lane, creating a pinch point. No traffic signals or speed signs are clearly visible.", "hazard_reasoning": "There is a man wearing black pants and a white shirt and walking on the right side of the road, away from the ego car. Since the parked truck limits visibility and the pedestrian is close to the road, the driver should slow down to ensure they can react safely."}
{"id": "train_00387", "split": "train", "clip_key": "titan_clip_164_000162_movie", "source": {"subset": "titan", "scenario": "clip_164", "frame": "000162"}, "frames": ["titan_clip_164_000162_movie_t-3.jpg", "titan_clip_164_000162_movie_t-2.jpg", "titan_clip_164_000162_movie_t-1.jpg", "titan_clip_164_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow", "environment_perception": "A narrow urban back street with unmarked single-lane pavement runs straight between closely spaced buildings; the surface looks slightly worn and traffic is very light. Ahead in the ego lane, a male pedestrian in a white shirt and black pants walks away from the camera carrying a coat, using the roadway because there is no sidewalk, and he stays in the vehicle's path, constraining the pace. Utility poles, shutters, and potted plants line the edges and reduce lateral clearance, but no traffic signals or other vehicles appear.", "hazard_reasoning": "There is a male pedestrian in a white shirt and black pants, carrying a coat in his hands, walking away from the ego-car, in the ego lane, because there is no sidewalk. The driver should slow down because the pedestrian is walking in the center of the lane and may step into the vehicle's path unexpectedly."}
{"id": "train_00388", "split": "train", "clip_key": "titan_clip_1345_000486_movie", "source": {"subset": "titan", "scenario": "clip_1345", "frame": "000486"}, "frames": ["titan_clip_1345_000486_movie_t-3.jpg", "titan_clip_1345_000486_movie_t-2.jpg", "titan_clip_1345_000486_movie_t-1.jpg", "titan_clip_1345_000486_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Be cautious of obstructed view ahead", "environment_perception": "A narrow urban side street with no median and smooth pavement appears lightly trafficked, with no moving vehicles ahead or oncoming. Ahead on the left, a gray box truck is parked partly in the travel lane for unloading, its rear open and its position constraining the ego vehicle's path. At the truck's tail, a worker stands and moves around while handling goods, which may bring him briefly into the lane the ego vehicle needs to pass. Farther ahead along the left curb, several parked cars continue the narrowing effect, leaving only a central corridor for through traffic. No traffic signals or speed signs are prominent in view.", "hazard_reasoning": "There is a gray truck parked on the left side of the road, because it is being unloaded. This parked vehicle partially blocks the view of pedestrians or oncoming traffic, so the driver should be cautious of the obstructed view ahead."}
{"id": "train_00389", "split": "train", "clip_key": "2020-0131-135401_088270_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "088270"}, "frames": ["2020-0131-135401_088270_movie_t-3.jpg", "2020-0131-135401_088270_movie_t-2.jpg", "2020-0131-135401_088270_movie_t-1.jpg", "2020-0131-135401_088270_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes runs between mid-rise buildings; a guardrail and raised divider line the right edge, the pavement is dry and smooth, and light traffic moves off from a junction. Ahead in the ego lane, a white van accelerates away as the traffic light turns green, opening a growing gap and briefly setting the pace. In the adjacent left lane, a small gray hatchback travels slightly ahead and accelerates straight, remaining within its lane and not impeding the ego vehicle. No obstacles or parked vehicles appear, and downstream flow looks smooth.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00390", "split": "train", "clip_key": "2020-0203-114632_005191_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_005191_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_005191_movie_t-3_augB1.jpg", "2020-0203-114632_005191_movie_t-2_augB1.jpg", "2020-0203-114632_005191_movie_t-1_augB1.jpg", "2020-0203-114632_005191_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-lane two-way street with a solid center line and good pavement narrows at a work area, so traffic flows slowly in alternating directions. Ahead in the middle of the road, a pedestrian wearing a helmet and yellow vest stands and guides traffic with a baton, controlling the ego vehicle's movement. In the oncoming lane to the right, a city bus approaches at low speed toward the bottleneck under the controller's direction. Farther back in the opposite lane, a small truck follows the bus and creeps toward the same pinch point. A work pickup with orange cones is stopped along the left edge of the ego lane just ahead, partially blocking the lane and creating the constraint.", "hazard_reasoning": "There is a pedestrian wearing a helmet and yellow vest, standing in the middle of the road, because they are guiding the traffic. The driver must stop because the pedestrian is directing vehicles from the center of the road, creating an obstruction that requires yielding to ensure safety."}
{"id": "train_00391", "split": "train", "clip_key": "2020-0221-115122_000912_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "000912"}, "frames": ["2020-0221-115122_000912_movie_t-3.jpg", "2020-0221-115122_000912_movie_t-2.jpg", "2020-0221-115122_000912_movie_t-1.jpg", "2020-0221-115122_000912_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road in a dense city center, with smooth pavement and a red-surfaced curb lane, carries heavy stop-and-go same-direction traffic and no physical median. A silver sedan directly ahead in the ego lane is stopped and then inches forward, constraining the ego car's pace. In the adjacent right lane, a white van slightly ahead rolls forward slowly, and another small van draws alongside at the front right, leaving little space for a lane change. To the left, a large crowd of pedestrians walks along the fenced sidewalk by the buildings and remains behind the barrier. A pedestrian footbridge spans the roadway ahead, and no unusual obstacles or work zones are visible.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, in the ego car lane. The driver must stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_00392", "split": "train", "clip_key": "2020-0214-145407_007415_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "007415"}, "frames": ["2020-0214-145407_007415_movie_t-3.jpg", "2020-0214-145407_007415_movie_t-2.jpg", "2020-0214-145407_007415_movie_t-1.jpg", "2020-0214-145407_007415_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane one-way road runs under an elevated expressway, the pavement smooth and dry, with light traffic slowing toward an intersection. A white van ahead in the ego lane is stopped for the red traffic light, directly in our path and setting our pace. A dark hatchback slightly farther ahead in the adjacent right lane also decelerates toward the same stop line while staying in its lane. Farther left near the curb, a small truck remains parked in a bay outside the travel lane. Overhead signals at the intersection show red for our direction.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. Driver should stop to avoid a collision and comply with the red light."}
{"id": "train_00393", "split": "train", "clip_key": "titan_clip_255_000216_movie", "source": {"subset": "titan", "scenario": "clip_255", "frame": "000216"}, "frames": ["titan_clip_255_000216_movie_t-3.jpg", "titan_clip_255_000216_movie_t-2.jpg", "titan_clip_255_000216_movie_t-1.jpg", "titan_clip_255_000216_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist ahead", "environment_perception": "A narrow urban two-way street with no centerline runs between buildings, the pavement smooth but the right side partially coned off for construction, so traffic is light and slow. On the left edge ahead, a cyclist in a blue shirt rides toward the ego vehicle, keeping to the left because construction occupies the right, and may approach the ego lane. Farther ahead near the center, a pedestrian walks along the roadway then angles right toward the coned work area, briefly influencing the ego car's pace. On the right, construction workers stand and move equipment just inside the cones close to the travel path. A white van is parked near the left curb at the foreground, slightly narrowing the approach.", "hazard_reasoning": "There is a cyclist wearing a blue shirt, cycling on the left side of the road, towards the ego car, because of construction work on the right. The driver should be aware that the cyclist may merge into their lane to avoid the cones and could enter the vehicle's path."}
{"id": "train_00394", "split": "train", "clip_key": "2020-0206-101736_040734_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "040734"}, "frames": ["2020-0206-101736_040734_movie_t-3.jpg", "2020-0206-101736_040734_movie_t-2.jpg", "2020-0206-101736_040734_movie_t-1.jpg", "2020-0206-101736_040734_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way street runs between mid-rise buildings, with no physical median and smooth pavement; traffic is heavy and slow in a long queue. A white sedan is stopped directly ahead in the ego lane because of traffic congestion, keeping the ego vehicle stationary. Other same-direction cars in the adjacent lanes ahead creep forward in the queue, limiting gaps for movement. On the right side of the roadway, oncoming vehicles including a truck proceed slowly in their lanes, separated by the center line. A pedestrian walks along the left sidewalk near the curb without approaching the road.", "hazard_reasoning": "There is a white Sedan stopped in front of the ego car because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision in the congested traffic."}
{"id": "train_00395", "split": "train", "clip_key": "2020-0207-101955_088800_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "088800"}, "frames": ["2020-0207-101955_088800_movie_t-3.jpg", "2020-0207-101955_088800_movie_t-2.jpg", "2020-0207-101955_088800_movie_t-1.jpg", "2020-0207-101955_088800_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be cautious of construction cones ahead", "environment_perception": "An elevated urban expressway on a bridge has two to three same-direction lanes with guardrails, clean asphalt, and light traffic flowing steadily. A white box truck travels ahead in the ego lane at a constant speed, setting the following distance. On the right, construction trucks, a silver car, and a couple of workers are stopped within a coned-off work zone; traffic cones line the right side of the road because of road construction, narrowing the outer lane and keeping moving traffic to the left. Farther ahead a small cluster of vehicles continues straight in the same direction without noticeable lane changes, while a blue overhead sign for upcoming exits appears on the right.", "hazard_reasoning": "There are traffic cones on the right side of the road because of road construction. Drivers should be cautious as these cones indicate maintenance work ahead and potential lane obstructions."}
{"id": "train_00396", "split": "train", "clip_key": "2020-0212-102546_046299_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "046299"}, "frames": ["2020-0212-102546_046299_movie_t-3.jpg", "2020-0212-102546_046299_movie_t-2.jpg", "2020-0212-102546_046299_movie_t-1.jpg", "2020-0212-102546_046299_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs beneath an elevated expressway, with three same-direction lanes and a right-side ramp lane; the pavement is smooth and traffic is moderate. Ahead in the ego lane, a white car pulls away as a forward signal shows green, opening a gap to the ego vehicle. To the left, a black van in the adjacent lane travels alongside at a similar speed and remains in its lane. Farther ahead under the flyover, a small truck in the ego lane proceeds steadily and may become the next vehicle the ego car follows. A painted gore and curb on the right separate the ramp area from the through lanes.", "hazard_reasoning": "There's a white sedan in the ego lane, driving away from the ego car, because of green traffic lights. The driver should follow the vehicle ahead to maintain safe spacing as it moves through the intersection under the green signal."}
{"id": "train_00397", "split": "train", "clip_key": "2020-0220-151845_039513_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "039513"}, "frames": ["2020-0220-151845_039513_movie_t-3.jpg", "2020-0220-151845_039513_movie_t-2.jpg", "2020-0220-151845_039513_movie_t-1.jpg", "2020-0220-151845_039513_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An elevated urban road beneath an expressway roof curves gently right, with a single lane in our direction bordered by concrete barriers and smooth pavement; traffic is light and briefly slows. A small flatbed truck directly ahead in the ego lane, carrying a tarped load, slows on the bend and constrains our pace. Farther ahead, a dark car continues in the same direction at a steady speed and stays well clear of our path. No salient traffic signals or speed signs are visible. The right-hand curve and high walls limit sight distance while the structure above casts shade across the lane.", "hazard_reasoning": "There is a red-and-yellow pickup truck slowing in the ego lane. The slowing vehicle ahead can obscure upcoming hazards and reduce reaction time, so the driver should slow down to maintain a safe following distance."}
{"id": "train_00398", "split": "train", "clip_key": "2020-0221-115122_024797_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "024797"}, "frames": ["2020-0221-115122_024797_movie_t-3.jpg", "2020-0221-115122_024797_movie_t-2.jpg", "2020-0221-115122_024797_movie_t-1.jpg", "2020-0221-115122_024797_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with three same-direction lanes and smooth pavement; traffic is heavy and mostly stop-and-go. Ahead in the ego lane a white hatchback is stopped because of congestion further ahead, directly constraining the ego vehicle's pace. In the left lane slightly ahead, a small box truck creeps forward with the queue, remaining alongside the hatchback. To the right, a line of vans and cars forms a slow-moving queue in the adjacent lane, limiting opportunities to change lanes. No salient signals or signs are in view, and the scene stays consistently congested along the covered stretch.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, because of traffic congestion ahead. The stopped vehicle ahead could cause a rear-end collision if not addressed promptly, so the driver should stop to avoid impact."}
{"id": "train_00399", "split": "train", "clip_key": "2020-0205-103411_113032_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "113032"}, "frames": ["2020-0205-103411_113032_movie_t-3.jpg", "2020-0205-103411_113032_movie_t-2.jpg", "2020-0205-103411_113032_movie_t-1.jpg", "2020-0205-103411_113032_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a painted median and dry, slightly worn pavement carries steady moderate traffic. A white van ahead in the ego lane pulls away with the flow, increasing the gap as traffic moves. Farther ahead to the left, a dark minivan continues in the adjacent same-direction lane at similar speed without affecting the ego's path. On the right edge, a large white tractor unit is stopped on the shoulder as a stationary roadside obstacle. Overhead circular road signs are visible, and temporary barriers and cones line the left roadside.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car, because traffic is moving ahead. Following the van maintains safe spacing and ensures you can respond to any sudden braking by the vehicle ahead."}
{"id": "train_00400", "split": "train", "clip_key": "2020-0226-140503_088544_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "088544"}, "frames": ["2020-0226-140503_088544_movie_t-3.jpg", "2020-0226-140503_088544_movie_t-2.jpg", "2020-0226-140503_088544_movie_t-1.jpg", "2020-0226-140503_088544_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single narrow lane in each direction and a solid center line runs between buildings; pavement looks smooth and traffic is moderate with a brief slowdown. The ego-car follows a white minivan directly ahead in the left lane, which slows and briefly queues because another vehicle farther ahead turns left at the intersection, limiting our pace. Far ahead at the junction, the left-turning car completes its maneuver and the queue starts to ease. In the oncoming lane to the right, a large dump truck approaches and passes close by while maintaining its line. A no parking sign is visible on the left beside roadside railings, and no other obstacles appear in the lane.", "hazard_reasoning": "There is a white minivan slowing in front of the ego-car, in the ego lane, because of another vehicle turning left ahead at the intersection. The minivan's reduced speed may require you to brake suddenly to avoid a collision, so you should prepare to decelerate."}
{"id": "train_00401", "split": "train", "clip_key": "2020-0228-150133_018709_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "018709"}, "frames": ["2020-0228-150133_018709_movie_t-3.jpg", "2020-0228-150133_018709_movie_t-2.jpg", "2020-0228-150133_018709_movie_t-1.jpg", "2020-0228-150133_018709_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction and dry pavement shows heavy, stopped traffic. A silver van directly ahead in the ego lane stands still because of congestion and blocks the path. Farther ahead in the same lane, a large bus is also stopped, extending the queue and constraining the ego vehicle's movement. The oncoming lane to the right near a side street shows no moving vehicles at the moment. A 40 speed limit sign and a no-parking sign are visible on the left beside a sidewalk and guardrail lined with storefronts.", "hazard_reasoning": "A silver van is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid a collision due to the congested traffic ahead."}
{"id": "train_00402", "split": "train", "clip_key": "titan_clip_907_000162_movie", "source": {"subset": "titan", "scenario": "clip_907", "frame": "000162"}, "frames": ["titan_clip_907_000162_movie_t-3.jpg", "titan_clip_907_000162_movie_t-2.jpg", "titan_clip_907_000162_movie_t-1.jpg", "titan_clip_907_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban corridor narrows to a single-lane roadway due to construction barriers; the pavement looks sound and traffic is light with no moving vehicles ahead. Straight ahead in the middle of the lane, a pedestrian wearing a blue shirt, black pants, and a helmet walks away from the ego vehicle because construction on the left blocks the roadside, occupying the ego path and setting the pace. Farther ahead, two additional pedestrians in work gear continue along the center of the roadway in the same direction, still within the ego lane. Along the left, a large flatbed truck is stopped beside a scaffolded building with workers nearby, while orange fencing lines the right, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, black pants, and a helmet, walking in the middle of the road, away from the ego car, because of construction work on the left. The driver should manoeuvre carefully around the pedestrian to avoid collision while navigating the construction area."}
{"id": "train_00403", "split": "train", "clip_key": "2020-0227-104226_029610_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "029610"}, "frames": ["2020-0227-104226_029610_movie_t-3.jpg", "2020-0227-104226_029610_movie_t-2.jpg", "2020-0227-104226_029610_movie_t-1.jpg", "2020-0227-104226_029610_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with a solid centerline and dry, well-kept pavement shows steady, moderate flow. A white box truck ahead in the ego lane moves away as the traffic in front of it progresses. An oncoming white mini van approaches near the centerline and passes smoothly, with additional oncoming cars following in sequence. A small white van stands at the left curb beside the buildings and remains stationary outside the lane. Guardrails line the roadside near a gentle rightward bend, and no salient signals or posted speeds are visible.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because traffic ahead is moving. You should follow the vehicle ahead to maintain a safe distance and be prepared for any sudden slowdown."}
{"id": "train_00404", "split": "train", "clip_key": "titan_clip_462_000126_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_462_000126_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_462_000126_movie_t-3_augB1.jpg", "titan_clip_462_000126_movie_t-2_augB1.jpg", "titan_clip_462_000126_movie_t-1_augB1.jpg", "titan_clip_462_000126_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with no centerline functions as a single shared lane; the pavement is dry and worn, and traffic is light with several vehicles stopped along the curbs. Ahead in the ego lane, a pedestrian carrying a handbag and umbrella crosses mid-block from right to left where there is no crosswalk, directly traversing the vehicle's path. Farther ahead on the right, a large box truck stands stopped partly in the roadway for loading, narrowing the available space and limiting passage. Additional parked vans sit along the left and right edges but remain stationary off the lane.", "hazard_reasoning": "There is a pedestrian carrying a handbag and umbrella, crossing the street in the middle of the road, from the right side to the left side, because there is no crosswalk. The driver should slow down to anticipate the pedestrian's movement and avoid a collision."}
{"id": "train_00405", "split": "train", "clip_key": "titan_clip_117_000852_movie", "source": {"subset": "titan", "scenario": "clip_117", "frame": "000852"}, "frames": ["titan_clip_117_000852_movie_t-3.jpg", "titan_clip_117_000852_movie_t-2.jpg", "titan_clip_117_000852_movie_t-1.jpg", "titan_clip_117_000852_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully", "environment_perception": "A narrow urban two-way street runs between mid-rise buildings with a single lane each direction, no median, and smooth pavement; traffic is light and steady. A white van ahead in the ego lane travels away at low speed near the centerline, effectively setting the pace. On the left edge, a pedestrian wearing a white shirt and black pants carries a handbag and walks away from the ego car along the roadside, close enough to slightly narrow the lane. On the right, another pedestrian stands near a shopfront by the curb and remains outside the travel lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a handbag, and walking on the left side of the street away from the ego car. The driver should carefully manoeuvre around the pedestrian to maintain a safe distance as they could change direction unexpectedly."}
{"id": "train_00406", "split": "train", "clip_key": "2020-0213-143552_052773_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "052773"}, "frames": ["2020-0213-143552_052773_movie_t-3.jpg", "2020-0213-143552_052773_movie_t-2.jpg", "2020-0213-143552_052773_movie_t-1.jpg", "2020-0213-143552_052773_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with mid-rise buildings features a two-way road divided by a low hedge median; our direction has a single left-side lane on smooth pavement and traffic is light to moderate. A black SUV ahead in the ego lane keeps a steady pace and briefly slows as it follows a white box truck. The white box truck farther ahead continues straight toward an intersection, constraining our headway. On the opposite side beyond the median, a black car travels toward us in the oncoming lane without affecting our path. Over the junction ahead, traffic signals are visible.", "hazard_reasoning": "The scene does not present any immediate hazards as there are no road users crossing, no debris, and clear road markings. No warning is required in this situation."}
{"id": "train_00407", "split": "train", "clip_key": "2020-0204-150838_044487_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "044487"}, "frames": ["2020-0204-150838_044487_movie_t-3.jpg", "2020-0204-150838_044487_movie_t-2.jpg", "2020-0204-150838_044487_movie_t-1.jpg", "2020-0204-150838_044487_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection leading onto a steel arch bridge; the pavement looks smooth and traffic is moderate. A white van ahead in the ego lane moves straight through the intersection because the traffic signal shows green, setting the pace for the ego car. To its left, a silver hatchback slightly ahead proceeds straight in the adjacent lane at similar speed. On the left sidewalk and near the crosswalk, several pedestrians and a few cyclists wait or roll along the edge but do not enter the roadway. Farther ahead in the right lanes, additional vans and a small truck continue toward the bridge. Overhead signals display green for through movement.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00408", "split": "train", "clip_key": "titan_clip_1203_000114_movie", "source": {"subset": "titan", "scenario": "clip_1203", "frame": "000114"}, "frames": ["titan_clip_1203_000114_movie_t-3.jpg", "titan_clip_1203_000114_movie_t-2.jpg", "titan_clip_1203_000114_movie_t-1.jpg", "titan_clip_1203_000114_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "An urban two-way street with one lane each direction and no median stretches ahead past a broad zebra crossing; pavement appears smooth and traffic is light. The oncoming lane is largely clear. A white van is parked ahead along the left edge of the ego lane on the left side of the road, constricting the path. A pedestrian walks on the left sidewalk near the shopfronts, staying by the curb with no immediate effect on the lane. A cyclist waits near the right corner by the small round building at the curb and may enter the roadway. A 30 speed marking is visible on the pavement ahead.", "hazard_reasoning": "There is a white van parked in the ego lane, on the left side of the road. The parked van obstructs the driving lane, requiring the driver to carefully manoeuvre around it to avoid a collision."}
{"id": "train_00409", "split": "train", "clip_key": "titan_clip_1314_000498_movie", "source": {"subset": "titan", "scenario": "clip_1314", "frame": "000498"}, "frames": ["titan_clip_1314_000498_movie_t-3.jpg", "titan_clip_1314_000498_movie_t-2.jpg", "titan_clip_1314_000498_movie_t-1.jpg", "titan_clip_1314_000498_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on right side", "environment_perception": "An urban commercial street is shown, a narrow two-way road without a median and with smooth pavement, and traffic is very light with no moving vehicles near the ego car. On the right side of the road, a pedestrian wearing black pants and a brown shirt stands near the curb and may step toward the lane as the car approaches. On the left by a storefront, another pedestrian stands beside a bicycle at the curb, stationary and facing the street, remaining outside the travel lane. Far ahead near a crosswalk, a red car is stopped at the opposite side of the intersection and does not affect the ego vehicle's path. Cones and blue netting mark minor roadside work along the left curb.", "hazard_reasoning": "There is a pedestrian wearing black pants and a brown shirt, standing on the right side of the road. The pedestrian may step into the lane unexpectedly, so the driver should remain cautious and ready to slow down."}
{"id": "train_00410", "split": "train", "clip_key": "titan_clip_922_000252_movie", "source": {"subset": "titan", "scenario": "clip_922", "frame": "000252"}, "frames": ["titan_clip_922_000252_movie_t-3.jpg", "titan_clip_922_000252_movie_t-2.jpg", "titan_clip_922_000252_movie_t-1.jpg", "titan_clip_922_000252_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with buildings tight to the curb has no centerline or sidewalks; the asphalt is smooth and traffic is very light with no moving vehicles. Near the left edge in the foreground, a man in a white shirt walks away along the roadway, occupying the lane margin and influencing the ego vehicle's pace. Farther ahead on the left, a pedestrian wearing a white coat walks away from the ego car because there is no sidewalk on that side. Planters and a parked bicycle protrude from the right curb, slightly narrowing the usable space.", "hazard_reasoning": "There is a pedestrian wearing a white coat, walking on the left side of the road, away from the ego car, because there is no sidewalk on the left. The pedestrian is walking on the roadway due to the absence of a sidewalk, posing a potential collision risk if traveling at speed, so the driver should slow down to maintain safety."}
{"id": "train_00411", "split": "train", "clip_key": "2020-0218-103119_049504_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "049504"}, "frames": ["2020-0218-103119_049504_movie_t-3.jpg", "2020-0218-103119_049504_movie_t-2.jpg", "2020-0218-103119_049504_movie_t-1.jpg", "2020-0218-103119_049504_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection, the pavement dry and smooth, with heavy traffic queued. A gray box truck is directly ahead in the ego lane, stopped because of congestion and holding the ego vehicle at the line. To the left, a white van in the adjacent same-direction lane is also stopped alongside the ego car in the queue. On the right ahead, a dark sedan waits in the neighboring lane near the intersection, positioned for a right turn. The overhead traffic signal facing the ego approach shows red while cross-street traffic continues through the junction.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, in the ego lane, because of traffic congestion. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_00412", "split": "train", "clip_key": "2020-0218-103119_002867_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002867"}, "frames": ["2020-0218-103119_002867_movie_t-3.jpg", "2020-0218-103119_002867_movie_t-2.jpg", "2020-0218-103119_002867_movie_t-1.jpg", "2020-0218-103119_002867_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the van", "environment_perception": "An urban multi-lane arterial runs straight between tall buildings, divided by a painted chevron median with low shrubs; the asphalt is dry and smooth, and traffic moves at a moderate, steady pace. In the right lane ahead, a silver van approaches from the opposite direction within its lane, separated by the median. Farther ahead in the center lane, a white box van continues at a steady speed, effectively setting the pace for following traffic. Near the left edge, a dark station wagon is stationary along the curb, separate from the moving lanes. Across the median, oncoming traffic is visible.", "hazard_reasoning": "There is a silver van driving on the right lane, toward the ego car. The van could merge into the ego vehicle's path or continue alongside, so the driver should yield to it to prevent a collision."}
{"id": "train_00413", "split": "train", "clip_key": "titan_clip_20_000084_movie", "source": {"subset": "titan", "scenario": "clip_20", "frame": "000084"}, "frames": ["titan_clip_20_000084_movie_t-3.jpg", "titan_clip_20_000084_movie_t-2.jpg", "titan_clip_20_000084_movie_t-1.jpg", "titan_clip_20_000084_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban two-way street with one lane each way and no median runs through a shopping district, the pavement smooth and traffic light as the ego approaches a signalized intersection showing green. On the near right at the crosswalk, a cyclist in a black T-shirt with a backpack rides away along the right edge of the intersection, moving away from the ego and remaining outside the lane. From the left, a pedestrian walks across the zebra crossing in front of the ego, briefly occupying the intended path. Farther ahead beyond the intersection, a white box truck stands by the left curb in the same direction, narrowing the usable lane.", "hazard_reasoning": "There is a cyclist wearing a black T-shirt, carrying a backpack, and cycling on the right side of the intersection, away from the ego-car. The driver should carefully manoeuvre around the cyclist given the partial obstruction from the parked truck and the cyclist's proximity."}
{"id": "train_00414", "split": "train", "clip_key": "2020-0206-101736_062416_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "062416"}, "frames": ["2020-0206-101736_062416_movie_t-3.jpg", "2020-0206-101736_062416_movie_t-2.jpg", "2020-0206-101736_062416_movie_t-1.jpg", "2020-0206-101736_062416_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes and a guardrail median runs straight between apartment blocks; the dry pavement is smooth and traffic moves slowly in heavy congestion, with oncoming vehicles flowing separately to the right. A white hatchback directly ahead in the ego lane slows because of a queue of vehicles ahead, constraining the ego car's pace. In the adjacent left lane, a white van slightly ahead travels alongside at a similar slow speed, limiting a lane change. Farther ahead in the left lane, a flatbed truck proceeds slowly, adding to the queue.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to match traffic flow and maintain a safe following distance."}
{"id": "train_00415", "split": "train", "clip_key": "2020-0129-144857_031066_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "031066"}, "frames": ["2020-0129-144857_031066_movie_t-3.jpg", "2020-0129-144857_031066_movie_t-2.jpg", "2020-0129-144857_031066_movie_t-1.jpg", "2020-0129-144857_031066_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road under an elevated expressway curves left, bordered by a fenced median and pillars on the right, with smooth pavement and traffic that compresses into a slow queue ahead. A black SUV ahead in the ego lane slows because of congestion ahead and sets the ego vehicle's pace. Farther ahead, several box trucks and cars in the same direction creep toward a junction, intermittently stopping and forming the bottleneck. In the adjacent left lane, a dark sedan slightly ahead proceeds at a similar speed and remains in its lane without affecting the ego path. On the left sidewalk, a bicyclist rides away from the camera and stays off the roadway.", "hazard_reasoning": "There is a black SUV slowing in the ego lane, because of traffic congestion ahead. Therefore, the driver should slow down to maintain a safe gap and adapt to reduced traffic speed."}
{"id": "train_00416", "split": "train", "clip_key": "2020-0220-102630_025437_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "025437"}, "frames": ["2020-0220-102630_025437_movie_t-3.jpg", "2020-0220-102630_025437_movie_t-2.jpg", "2020-0220-102630_025437_movie_t-1.jpg", "2020-0220-102630_025437_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-ending the stopped truck ahead.", "environment_perception": "An urban street with two same-direction lanes runs between mid-rise buildings; pavement is sound and traffic is at a standstill. A white box truck is directly ahead in the ego lane and stopped, holding the ego car. To the right, another delivery truck is alongside in the adjacent lane, also stopped and slightly ahead, limiting space to pass. On the left sidewalk, a pedestrian walks beside the guardrail near the truck's rear while remaining off the roadway.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The driver should stop to avoid colliding with the halted truck ahead."}
{"id": "train_00417", "split": "train", "clip_key": "titan_clip_857_000216_movie", "source": {"subset": "titan", "scenario": "clip_857", "frame": "000216"}, "frames": ["titan_clip_857_000216_movie_t-3.jpg", "titan_clip_857_000216_movie_t-2.jpg", "titan_clip_857_000216_movie_t-1.jpg", "titan_clip_857_000216_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the stopped truck", "environment_perception": "A narrow one-lane urban street with sidewalks and bollards has no median and worn but dry pavement, and traffic moves slowly due to limited space. A white truck is stopped on the left side in the ego lane, partially protruding and narrowing the passage. Ahead in the same lane, another white box truck proceeds slowly, constraining the ego vehicle's pace. On the right, several pedestrians walk along the sidewalk near the curb beside rows of parked bicycles, close to the road edge.", "hazard_reasoning": "There is a white truck stopped on the left side of the road, in the ego lane. The stopped truck partially blocks the ego lane and reduces visibility ahead, requiring careful manoeuvring to pass safely."}
{"id": "train_00418", "split": "train", "clip_key": "titan_clip_647_000234_movie", "source": {"subset": "titan", "scenario": "clip_647", "frame": "000234"}, "frames": ["titan_clip_647_000234_movie_t-3.jpg", "titan_clip_647_000234_movie_t-2.jpg", "titan_clip_647_000234_movie_t-1.jpg", "titan_clip_647_000234_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban two-way residential street with edge lines but no centerline has smooth pavement and very light traffic as the ego vehicle proceeds on the left. A pedestrian wearing a white shirt stands on the left side of the road near the curb, close to the ego lane. Farther ahead, there are no moving vehicles in the same direction and no oncoming traffic visible. A bicycle is parked along the right wall near a recessed entrance, and the nose of a parked car is visible in a right-side garage, narrowing the available shoulder. No active traffic signals or speed signs are evident.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and standing on the left side of the road. The pedestrian may step into the roadway unexpectedly, so the driver should be aware of the pedestrian ahead."}
{"id": "train_00419", "split": "train", "clip_key": "2020-0228-150133_016638_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "016638"}, "frames": ["2020-0228-150133_016638_movie_t-3.jpg", "2020-0228-150133_016638_movie_t-2.jpg", "2020-0228-150133_016638_movie_t-1.jpg", "2020-0228-150133_016638_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban two-way road with one narrow lane each direction runs past apartment blocks and shops, with a metal guardrail along the left sidewalk. Pavement is dry and traffic in the ego direction is heavy and stopped. A gray van directly ahead in the ego lane is stopped due to congestion and blocks the path. Farther ahead in the same lane, a large bus remains stationary, holding the line and determining the slow pace. Pedestrians walk along the left sidewalk behind the guardrail, moving parallel to the road without entering the lane. A black minivan stands still on the oncoming side in a red side lane, outside the ego path.", "hazard_reasoning": "There is a gray van that has stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The van's unexpected stop due to congestion increases collision risk, so the driver should stop promptly to maintain a safe following distance."}
{"id": "train_00420", "split": "train", "clip_key": "titan_clip_1046_000360_movie", "source": {"subset": "titan", "scenario": "clip_1046", "frame": "000360"}, "frames": ["titan_clip_1046_000360_movie_t-3.jpg", "titan_clip_1046_000360_movie_t-2.jpg", "titan_clip_1046_000360_movie_t-1.jpg", "titan_clip_1046_000360_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single narrow lane each direction is lined by temporary work barriers and cones, with no median and worn pavement; traffic is light. Ahead near the center of the roadway, an oncoming white van approaches at low speed, reducing clearance as the lanes are constricted by the work zone. On the right edge of the road, a pedestrian pushing a cart walks toward the ego car along the curb and may step into the lane. A person stands by a doorway on the left sidewalk, remaining out of the roadway. No signals or speed signs are clearly visible.", "hazard_reasoning": "There is a pedestrian pushing a cart and walking on the right side of the road, toward the ego car. The pedestrian may step into the path of the vehicle, so the driver should slow down to safely respond."}
{"id": "train_00421", "split": "train", "clip_key": "2020-0204-103442_013476_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "013476"}, "frames": ["2020-0204-103442_013476_movie_t-3.jpg", "2020-0204-103442_013476_movie_t-2.jpg", "2020-0204-103442_013476_movie_t-1.jpg", "2020-0204-103442_013476_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a planted divider on the right and smooth pavement runs between tall buildings, and traffic moves at a moderate pace toward an elevated roadway ahead. A black SUV directly ahead in the ego lane slows because of congestion, limiting the ego car's speed. A white minivan in the lane to the right advances slightly faster, overtaking while continuing straight. Pedestrians linger on the left sidewalk by a row of parked bicycles near a side street, remaining clear of the roadway.", "hazard_reasoning": "There is a black SUV slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to safely adjust speed and maintain adequate following distance."}
{"id": "train_00422", "split": "train", "clip_key": "titan_clip_564_000258_movie", "source": {"subset": "titan", "scenario": "clip_564", "frame": "000258"}, "frames": ["titan_clip_564_000258_movie_t-3.jpg", "titan_clip_564_000258_movie_t-2.jpg", "titan_clip_564_000258_movie_t-1.jpg", "titan_clip_564_000258_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with a single shared lane and no divider is paved with brick and appears well maintained, and there are no other vehicles so flow is slow among pedestrians. On the right side, a man in a white T-shirt and white shorts carrying a handbag and an umbrella walks toward the vehicle and may step into the lane, limiting pace. Ahead near the right curb, two pedestrians approach along the storefronts, staying close to the edge but passing near the vehicle's path. Farther ahead slightly left, another pedestrian walks away around the gentle bend. Shop signboards and a seated person on the near right narrow the margin but remain off the roadway.", "hazard_reasoning": "There is a man carrying a handbag and an umbrella, wearing a white t-shirt, and white shorts, and walking on the right side of the road, toward the ego car. The driver should slow down to avoid a potential collision since the pedestrian is walking on the roadway near the vehicle's path."}
{"id": "train_00423", "split": "train", "clip_key": "2020-0127-132751_025183_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "025183"}, "frames": ["2020-0127-132751_025183_movie_t-3.jpg", "2020-0127-132751_025183_movie_t-2.jpg", "2020-0127-132751_025183_movie_t-1.jpg", "2020-0127-132751_025183_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial under an elevated expressway has two same-direction lanes; the ego car is in the left lane by the curb, the pavement is dry, and traffic is heavy and queued. A white hatchback is stopped directly ahead in the ego lane for a red traffic light, keeping the ego car stationary. To the right, a silver minivan alongside and several cars in the adjacent lane wait in line and creep slightly, pacing the ego vehicle without changing lanes. An overhead signal ahead displays red.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop to avoid colliding with the halted vehicle and comply with the traffic light."}
{"id": "train_00424", "split": "train", "clip_key": "2020-0203-154554_019472_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "019472"}, "frames": ["2020-0203-154554_019472_movie_t-3.jpg", "2020-0203-154554_019472_movie_t-2.jpg", "2020-0203-154554_019472_movie_t-1.jpg", "2020-0203-154554_019472_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A busy urban multi-lane intersection with broad zebra crossings and no physical median is seen under dry pavement, and overall traffic moves heavily and slowly. A black sedan directly ahead in the ego lane slows because of congestion and controls the ego car's pace. Slightly ahead to the left, a green and white coach continues straight in the adjacent same-direction lane amid the slow flow. From the right side of the junction, a silver minivan follows a channelized curve to turn into the same direction and may merge toward the ego lane. Oncoming traffic streams through the opposite lanes to the right.", "hazard_reasoning": "There is a black sedan slowing in the ego lane because of traffic congestion ahead, in front of the ego car. The driver should reduce speed to maintain a safe following distance and avoid rear-end collision."}
{"id": "train_00425", "split": "train", "clip_key": "2020-0226-140503_034601_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "034601"}, "frames": ["2020-0226-140503_034601_movie_t-3.jpg", "2020-0226-140503_034601_movie_t-2.jpg", "2020-0226-140503_034601_movie_t-1.jpg", "2020-0226-140503_034601_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with a left-side bike lane and a guardrail-separated ramp on the right appears dry and in good condition, and traffic is generally light though the ego lane is halted. Overhead blue direction signs indicate routes toward an expressway. A black van is stopped directly ahead in the ego lane, holding still and constraining the ego car. In the adjacent left lane a small silver car waits slightly behind, remaining stationary alongside the ego vehicle. Farther ahead to the right, a light blue car continues along the ramp lane away from the ego path and does not interact.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane. You should stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_00426", "split": "train", "clip_key": "titan_clip_422_000054_movie", "source": {"subset": "titan", "scenario": "clip_422", "frame": "000054"}, "frames": ["titan_clip_422_000054_movie_t-3.jpg", "titan_clip_422_000054_movie_t-2.jpg", "titan_clip_422_000054_movie_t-1.jpg", "titan_clip_422_000054_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "An urban two-way street with a single narrow lane in each direction runs between mid-rise buildings, the pavement smooth and traffic light as the car proceeds straight. The ego lane is partially narrowed by a work zone marked with red traffic cones along the left curb, and a red cone sits on the left side of the ego lane ahead of the car. A uniformed worker stands slightly left of center ahead, gesturing slowly and indicating the work area, so the vehicle may need to pass carefully. Farther ahead, a small truck travels in the same direction at low speed, setting the pace. On the right, two pedestrians walk along the sidewalk near the curb but stay out of the roadway.", "hazard_reasoning": "There is a red traffic cone, on the left side of the ego lane, in front of the ego car. The driver should manoeuvre carefully around this cone to avoid collision and maintain safe navigation."}
{"id": "train_00427", "split": "train", "clip_key": "2020-0131-135401_059176_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "059176"}, "frames": ["2020-0131-135401_059176_movie_t-3.jpg", "2020-0131-135401_059176_movie_t-2.jpg", "2020-0131-135401_059176_movie_t-1.jpg", "2020-0131-135401_059176_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban two-way arterial lined with mid-rise buildings carries slow, moderate traffic on patched pavement, with two lanes in the ego direction separated from oncoming lanes by a painted median. A white van directly ahead in the ego lane slows and then creeps forward because of traffic congestion ahead, limiting the ego vehicle's pace. To the right, a light van in the adjacent same-direction lane moves slightly faster and continues straight without merging, offering a potential but constrained passing flow. In the opposite lanes to the right, a truck and several cars come toward the camera at steady speed, remaining separated by the median and not interacting with the ego lane.", "hazard_reasoning": "There is a white van slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance behind the slowing vehicle."}
{"id": "train_00428", "split": "train", "clip_key": "titan_clip_1339_000372_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1339_000372_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1339_000372_movie_t-3_augB1.jpg", "titan_clip_1339_000372_movie_t-2_augB1.jpg", "titan_clip_1339_000372_movie_t-1_augB1.jpg", "titan_clip_1339_000372_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban multi-lane street runs between tall buildings with smooth pavement and light same-direction traffic; there is no visible median. A pedestrian in a gray t-shirt and blue pants walks ahead on the left side of the roadway, moving away from the camera within the ego lane and briefly occupying the path, so the car must hold pace. To the right, a silver hatchback draws alongside in the adjacent lane and continues ahead, not affecting the ego vehicle. Farther ahead on the right, a white van waits near the curb in the same direction, forming a roadside obstruction. A bus stop sign stands along the left sidewalk and an elevated structure spans the road in the distance.", "hazard_reasoning": "There is a pedestrian wearing a gray t-shirt and blue pants, and walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to maintain safe distance and avoid potential collision."}
{"id": "train_00429", "split": "train", "clip_key": "titan_clip_458_000186_movie", "source": {"subset": "titan", "scenario": "clip_458", "frame": "000186"}, "frames": ["titan_clip_458_000186_movie_t-3.jpg", "titan_clip_458_000186_movie_t-2.jpg", "titan_clip_458_000186_movie_t-1.jpg", "titan_clip_458_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian on the left", "environment_perception": "An urban backstreet with closely spaced shops narrows into a single-carriageway two-way road without a centerline; the pavement looks smooth and traffic is light. A pedestrian on the left roadside walks away from the ego vehicle along the curb, close to the travel path and potentially edging toward the lane. Far ahead, a small white van approaches in the opposite direction on the oncoming side, reducing available space on the narrow roadway. Additional pedestrians on the right sidewalk walk parallel to traffic and remain clear of the road.", "hazard_reasoning": "A pedestrian wearing blue jeans is walking on the left side of the road, away from the ego car. The pedestrian might step into the travel lane unexpectedly, so the driver should be aware and maintain a safe distance."}
{"id": "train_00430", "split": "train", "clip_key": "2020-0203-114632_066332_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "066332"}, "frames": ["2020-0203-114632_066332_movie_t-3.jpg", "2020-0203-114632_066332_movie_t-2.jpg", "2020-0203-114632_066332_movie_t-1.jpg", "2020-0203-114632_066332_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of lane change", "environment_perception": "An urban bridge in a built-up area carries smooth, well-marked lanes with a painted median, and traffic is light to moderate and steady. A white truck directly ahead in the ego lane signals and moves to the right lane in front of the ego car, briefly constraining the ego before clearing its path. A dark sedan farther ahead continues straight in the right lane at a steady pace, becoming the vehicle the truck follows. On the opposite side, several oncoming vehicles, including a white truck, approach in their lanes across the median without interaction. A yellow merge warning sign is visible on the left, and high-rise apartments line the roadway.", "hazard_reasoning": "There is a white truck lane changing in front of the ego car, from the ego lane to the right lane. The driver should be aware because the truck's maneuver may encroach on the ego-vehicle's lane space."}
{"id": "train_00431", "split": "train", "clip_key": "titan_clip_1334_000528_movie", "source": {"subset": "titan", "scenario": "clip_1334", "frame": "000528"}, "frames": ["titan_clip_1334_000528_movie_t-3.jpg", "titan_clip_1334_000528_movie_t-2.jpg", "titan_clip_1334_000528_movie_t-1.jpg", "titan_clip_1334_000528_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of walking pedestrian ahead", "environment_perception": "A narrow urban shopping street with a single undivided lane and smooth asphalt lacks a marked centerline, and traffic is very light with no moving vehicles visible. On the right edge, a pedestrian in brown pants walks toward the ego car along the curb, close to the travel path. A few other pedestrians linger near shop entrances on the left but stay off the roadway. Bicycles are parked in a row behind bollards on the right, and multiple sandwich boards project from the left, slightly narrowing the available lane.", "hazard_reasoning": "There is a pedestrian wearing brown pants and walking on the right side of the road, toward the ego car. The pedestrian may enter the lane unexpectedly, so the driver should be aware and prepared to react."}
{"id": "train_00432", "split": "train", "clip_key": "titan_clip_840_000318_movie", "source": {"subset": "titan", "scenario": "clip_840", "frame": "000318"}, "frames": ["titan_clip_840_000318_movie_t-3.jpg", "titan_clip_840_000318_movie_t-2.jpg", "titan_clip_840_000318_movie_t-1.jpg", "titan_clip_840_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian on the road", "environment_perception": "An urban narrow street with a single undivided lane and smooth asphalt shows light vehicle flow but many pedestrians. On the left edge of the lane, a pedestrian in a white T-shirt and white boots walks away from the ego vehicle within the roadway because there is no sidewalk, occupying the near-side margin. Slightly ahead to the right, a box-equipped motorcycle travels forward at low speed near the center, setting the pace as it threads past people. Farther ahead, a cluster of pedestrians walk and some cross the roadway near a small vehicle stopped by the curb, entering the ego path. Orange cones at the right curb and parked bicycles on the left further constrict space.", "hazard_reasoning": "A pedestrian wearing a white t-shirt with white boots is walking away from the ego car on the left side of the lane because there is no sidewalk. The pedestrian is exposed on the road without a safe walkway and may move unpredictably, so the driver should be aware of them."}
{"id": "train_00433", "split": "train", "clip_key": "2020-0214-102601_001224_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "001224"}, "frames": ["2020-0214-102601_001224_movie_t-3.jpg", "2020-0214-102601_001224_movie_t-2.jpg", "2020-0214-102601_001224_movie_t-1.jpg", "2020-0214-102601_001224_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential street has one lane in each direction divided by a solid yellow center line, with smooth asphalt and narrow sidewalks behind railings; traffic is very light with no moving vehicles visible. No vehicle is ahead in the ego lane and no oncoming traffic passes, so the roadway stays clear. On the opposite sidewalk near center-right, a pair of vending machines and a storefront entrance with plants are visible, with a motorcycle parked off the roadway. No traffic signals or speed signs are evident, and there are no obstacles or work zones intruding into the lane.", "hazard_reasoning": "No hazards are present in this scene, so the driver can proceed without special caution."}
{"id": "train_00434", "split": "train", "clip_key": "titan_clip_1321_000432_movie", "source": {"subset": "titan", "scenario": "clip_1321", "frame": "000432"}, "frames": ["titan_clip_1321_000432_movie_t-3.jpg", "titan_clip_1321_000432_movie_t-2.jpg", "titan_clip_1321_000432_movie_t-1.jpg", "titan_clip_1321_000432_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van", "environment_perception": "A narrow urban street with no centerline runs between low-rise buildings; the pavement looks smooth and vehicle traffic is light while pedestrian activity is moderate. Ahead in the ego lane, a gray van stands at the right edge with its rear doors open as it is being unloaded, narrowing the lane and constraining the ego vehicle's path. On the right sidewalk close to the curb, a woman walks toward the camera parallel to traffic, remaining on the footway but near the roadway. On the left sidewalk ahead, two pedestrians walk away along the edge past bollards, continuing straight without stepping into the lane. Farther ahead other pedestrians move along the sidewalks, and no moving oncoming vehicles are apparent.", "hazard_reasoning": "There's a gray van parked on the right side of the road, in the ego lane, because it is being unloaded. The gray van is blocking the driving lane, requiring a cautious maneuver to avoid collision with it."}
{"id": "train_00435", "split": "train", "clip_key": "2020-0205-152530_039982_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "039982"}, "frames": ["2020-0205-152530_039982_movie_t-3.jpg", "2020-0205-152530_039982_movie_t-2.jpg", "2020-0205-152530_039982_movie_t-1.jpg", "2020-0205-152530_039982_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs straight past tall buildings with smooth pavement and a wide crosswalk at an intersection, and traffic flows at a moderate, steady pace. Ahead in the ego lane, a black sedan changes lanes to the right, moving across the dashed line and creating space in front of the ego vehicle. In the adjacent right lane slightly ahead, a city bus continues straight at a similar speed, so the sedan's merge threads in ahead of it. Farther ahead in the center lanes, a small dark hatchback and several cars proceed steadily, forming a moving queue that sets the overall pace.", "hazard_reasoning": "There's a black sedan changing lanes, from the ego lane to the right lane. This unexpected lane change may require the driver to slow down to maintain a safe distance and avoid a collision."}
{"id": "train_00436", "split": "train", "clip_key": "titan_clip_417_000366_movie", "source": {"subset": "titan", "scenario": "clip_417", "frame": "000366"}, "frames": ["titan_clip_417_000366_movie_t-3.jpg", "titan_clip_417_000366_movie_t-2.jpg", "titan_clip_417_000366_movie_t-1.jpg", "titan_clip_417_000366_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the distracted pedestrian", "environment_perception": "An urban side street with no lane markings and smooth stone paving runs between storefronts and trees, with light traffic and no divider. The road narrows where a black sedan stands at the right curb, leaving a single usable lane. On the left near the ego vehicle, a pedestrian in a brown shirt walks toward the car while looking at a phone along the edge of the roadway and may enter the ego lane. Farther ahead near the center, another pedestrian walks toward the ego in the roadway, reducing available space. Additional pedestrians remain near the left storefronts without approaching the lane.", "hazard_reasoning": "There is a pedestrian wearing a brown shirt, looking into their phone, walking on the left side of the road, towards the ego car. This distracted pedestrian could step into the roadway unexpectedly, so the driver should stay vigilant and prepare to slow down if needed."}
{"id": "train_00437", "split": "train", "clip_key": "2020-0226-101332_055186_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "055186"}, "frames": ["2020-0226-101332_055186_movie_t-3.jpg", "2020-0226-101332_055186_movie_t-2.jpg", "2020-0226-101332_055186_movie_t-1.jpg", "2020-0226-101332_055186_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban, multi-lane signalized intersection with smooth pavement is ahead, and the ego-car waits at the stop line with a red light while cross-traffic moves at a moderate flow. A man in blue jeans and a black jacket and a woman in a black jacket and blue dress walk across the marked crosswalk directly in front, moving right to left and occupying the ego lane. To their right, another pedestrian pushes a wheeled suitcase across the same crosswalk, continuing leftward and remaining in the ego path. An SUV from the right travels leftward through the intersection as permitted cross traffic, passing ahead while a few oncoming vehicles are stopped on the far side.", "hazard_reasoning": "There is a man in a pair of blue jeans and a black jacket, and a woman in a black jacket and blue dress, crossing the road in front of the ego-car, in a marked crosswalk in an intersection. The driver must yield because these pedestrians are entering the vehicle's path and could be struck if the vehicle continues moving without stopping."}
{"id": "train_00438", "split": "train", "clip_key": "titan_clip_245_000018_movie", "source": {"subset": "titan", "scenario": "clip_245", "frame": "000018"}, "frames": ["titan_clip_245_000018_movie_t-3.jpg", "titan_clip_245_000018_movie_t-2.jpg", "titan_clip_245_000018_movie_t-1.jpg", "titan_clip_245_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "A narrow urban street lined with tall office buildings has smooth pavement and light traffic; there is no visible centerline and the flow remains calm. On the left edge of the ego lane just ahead, a pedestrian in a white shirt and black pants walks away along the lane, close to the curb and ahead of the car. A white kei car stands stopped at the left curb further ahead in the same direction, narrowing the available lane near the pedestrian. On the right sidewalk, a small group of pedestrians with umbrellas walks toward the camera while staying on the footpath, and a security guard stands by a building entrance.", "hazard_reasoning": "A pedestrian wearing a white shirt and black pants is walking along the left side of the lane, away from the ego car. The pedestrian's proximity to the roadway could lead to an unexpected crossing or drift into the lane, so the driver should be cautious of the pedestrian ahead."}
{"id": "train_00439", "split": "train", "clip_key": "titan_clip_367_000612_movie", "source": {"subset": "titan", "scenario": "clip_367", "frame": "000612"}, "frames": ["titan_clip_367_000612_movie_t-3.jpg", "titan_clip_367_000612_movie_t-2.jpg", "titan_clip_367_000612_movie_t-1.jpg", "titan_clip_367_000612_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the cone", "environment_perception": "A narrow urban side street with a single unmarked lane and no median runs between shops; pavement looks worn but clear, and traffic is light with no moving vehicles. Ahead in the lane, a pedestrian walks away near the center, slightly constraining the path of the ego vehicle. On the right, a dark van is stopped with its rear doors open and work equipment around it, occupying part of the lane. Beside this van on the right edge, a worker stands and moves near a green traffic cone that protrudes into the ego lane, so the cone and activity may encroach on the path. Shop signs and parked bicycles line both sides, further narrowing the corridor.", "hazard_reasoning": "There is a green traffic cone on the right side of the road, in the ego lane. It partially blocks the lane, so drivers need to manoeuvre around it to maintain safe passage."}
{"id": "train_00440", "split": "train", "clip_key": "2020-0227-104226_003152_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "003152"}, "frames": ["2020-0227-104226_003152_movie_t-3.jpg", "2020-0227-104226_003152_movie_t-2.jpg", "2020-0227-104226_003152_movie_t-1.jpg", "2020-0227-104226_003152_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial passes through tall buildings with smooth pavement; the ego side has a single through lane bordered by a raised concrete median on the right and a red-colored curb lane on the left, and traffic in this direction is heavy and slow. A white minivan directly ahead in the ego lane is stopped because congestion builds in front, holding the ego vehicle. On the opposite side of the median, several cars approach from the right in their oncoming lanes at a steady pace and do not interact with the ego path. Pedestrians move along the sidewalks, and a white pedestrian overpass spans the roadway above.", "hazard_reasoning": "There is a white mini-van stopped in front of the ego car, because there is traffic congestion ahead. As the mini-van ahead is stationary due to congestion, you need to stop to maintain safe following distance and prevent a rear-end collision."}
{"id": "train_00441", "split": "train", "clip_key": "2020-0217-110854_068116_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "068116"}, "frames": ["2020-0217-110854_068116_movie_t-3.jpg", "2020-0217-110854_068116_movie_t-2.jpg", "2020-0217-110854_068116_movie_t-1.jpg", "2020-0217-110854_068116_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street lined with apartments and leafless trees has smooth asphalt. The ego vehicle proceeds in the left lane of a single-lane-per-direction road separated by a painted hatched median, and traffic is light to moderate. A white truck ahead in the ego lane drives away at a steady pace, setting the ego vehicle's speed. To the right, a small white van approaches in the nearest oncoming lane and continues straight past. Farther up the road another oncoming vehicle advances in its lane without affecting the ego path. An overhead circular sign posts 40. Parked cars sit at the curb by a yellow storefront on the right, and no obstacles or work zones appear.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The white truck ahead may slow or brake unexpectedly, so the driver should maintain awareness and be prepared to react."}
{"id": "train_00442", "split": "train", "clip_key": "2020-0214-102601_021354_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "021354"}, "frames": ["2020-0214-102601_021354_movie_t-3.jpg", "2020-0214-102601_021354_movie_t-2.jpg", "2020-0214-102601_021354_movie_t-1.jpg", "2020-0214-102601_021354_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with a single through lane in the ego direction runs between sidewalks and tall buildings, separated from oncoming lanes by a concrete median; the pavement looks smooth and overall flow is light, slowed by the signal ahead. A blue truck directly ahead in the ego lane is stopped at the red light, holding the ego vehicle. Beyond the median to the right, oncoming cars travel through the junction without affecting the ego path. Pedestrians walk along the left sidewalk near the intersection. The traffic signal facing the ego lane shows red.", "hazard_reasoning": "A blue truck is stopped in front of the ego car in the ego lane, because the light is red. Stop to avoid running the red light and maintain a safe following distance."}
{"id": "train_00443", "split": "train", "clip_key": "2020-0129-144857_041715_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "041715"}, "frames": ["2020-0129-144857_041715_movie_t-3.jpg", "2020-0129-144857_041715_movie_t-2.jpg", "2020-0129-144857_041715_movie_t-1.jpg", "2020-0129-144857_041715_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated structure, with the ego vehicle in the rightmost lane beside a guardrail; the pavement is smooth and traffic is heavy and slow-moving. A black van directly ahead in the ego lane slows and pauses in congestion, constraining the ego car's pace. To the left, a white station wagon in the adjacent lane creeps forward slightly faster, staying close alongside and limiting room for a lane change. Farther left, a covered work truck inches ahead with the queue. A circular 50 speed limit sign is mounted on a right-side pillar.", "hazard_reasoning": "There is a black van slowing in front of the ego car in the ego lane, because of traffic congestion. The van's reduced speed increases the risk of a rear-end collision, so the driver should slow down to maintain a safe following distance."}
{"id": "train_00444", "split": "train", "clip_key": "2020-0228-150133_000330_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "000330"}, "frames": ["2020-0228-150133_000330_movie_t-3.jpg", "2020-0228-150133_000330_movie_t-2.jpg", "2020-0228-150133_000330_movie_t-1.jpg", "2020-0228-150133_000330_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban two-way road approaches a signalized intersection beneath a railway overpass, with no median and smooth pavement; traffic is moderate and flows steadily. A white box truck ahead in the ego lane proceeds straight toward the underpass and slows over the crosswalk, constraining the ego vehicle's pace. On the left edge of the roadway, a cyclist carrying a handbag rides away from the ego car along the curb in the same direction and could edge near the lane. Groups of pedestrians wait at both sides of the zebra crossing under the bridge, creating a possible side interaction near the truck.", "hazard_reasoning": "There is a cyclist carrying a handbag, cycling on the left side of the road, away from the ego car. Manoeuvre carefully around the cyclist as they may change direction unexpectedly."}
{"id": "train_00445", "split": "train", "clip_key": "titan_clip_807_000546_movie", "source": {"subset": "titan", "scenario": "clip_807", "frame": "000546"}, "frames": ["titan_clip_807_000546_movie_t-3.jpg", "titan_clip_807_000546_movie_t-2.jpg", "titan_clip_807_000546_movie_t-1.jpg", "titan_clip_807_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban street in Japan curves right on wet pavement; it functions as a two-lane one-way road without a median, and light traffic moves slowly due to curbside activity. A small delivery truck ahead in the ego lane continues along the curve at low speed and effectively sets the pace. On the left edge, a pedestrian wearing a green shirt and cap stands beside a parked box truck, attending the vehicle with its door open close to the lane. On the right, a black sedan is parked with its right-side door open toward the roadway, narrowing the available width. Additional parked vehicles line both curbs, further constricting the passage.", "hazard_reasoning": "There is a pedestrian wearing a green shirt and cap, standing on the left side of the road, because they are attending their parked vehicle on the left. This pedestrian may unexpectedly enter the traffic lane while accessing their vehicle, so you should carefully manoeuvre around them."}
{"id": "train_00446", "split": "train", "clip_key": "2020-0213-143552_056857_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "056857"}, "frames": ["2020-0213-143552_056857_movie_t-3.jpg", "2020-0213-143552_056857_movie_t-2.jpg", "2020-0213-143552_056857_movie_t-1.jpg", "2020-0213-143552_056857_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided road with two lanes in the same direction runs past mid-rise buildings, separated from oncoming traffic to the right by a raised shrub median; pavement is smooth and traffic is light to moderate. A large white box truck ahead in the ego lane proceeds steadily and controls the ego vehicle's pace. From the lane to the left, a silver van moves right and cuts into the ego lane to avoid a parked vehicle along the left curb. Oncoming cars travel on the far side of the median without interacting.", "hazard_reasoning": "There is a silver van cutting in from the left lane to the ego lane because it is avoiding a parked vehicle. The driver should slow down to maintain a safe distance and anticipate the lane change."}
{"id": "train_00447", "split": "train", "clip_key": "2020-0131-135401_010526_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "010526"}, "frames": ["2020-0131-135401_010526_movie_t-3.jpg", "2020-0131-135401_010526_movie_t-2.jpg", "2020-0131-135401_010526_movie_t-1.jpg", "2020-0131-135401_010526_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "In a dense urban setting, the ego travels on a narrow two-way street with a solid orange centerline and no median; the pavement is dry and overall traffic is light but briefly impeded. A white truck is stopped directly ahead in the ego lane, blocking the path and holding the ego's pace. An oncoming small silver truck approaches in the right lane and continues past, occupying the opposing lane and limiting any chance to go around. A pedestrian is visible on the right sidewalk ahead near the oncoming truck but remains off the roadway.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The driver must stop to avoid colliding with the halted vehicle ahead."}
{"id": "train_00448", "split": "train", "clip_key": "2020-0207-101955_024903_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "024903"}, "frames": ["2020-0207-101955_024903_movie_t-3.jpg", "2020-0207-101955_024903_movie_t-2.jpg", "2020-0207-101955_024903_movie_t-1.jpg", "2020-0207-101955_024903_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction runs straight between mid-rise buildings; the lanes are divided by flexible posts, the pavement is dry and smooth, and traffic is moderate with steady movement. A green truck drives ahead in the ego lane, moving away from the camera and effectively setting the ego car's pace. To the right, a white van approaches in the oncoming lane beyond the posts and continues past without encroaching. A short line of oncoming cars follows behind it in the same separated lane. Pedestrians remain on the left sidewalk near shops and do not enter the roadway.", "hazard_reasoning": "There is a green truck driving in the ego lane, away from the ego car. The driver should follow the vehicle ahead closely to maintain a safe distance in case of sudden stops."}
{"id": "train_00449", "split": "train", "clip_key": "titan_clip_1176_000504_movie", "source": {"subset": "titan", "scenario": "clip_1176", "frame": "000504"}, "frames": ["titan_clip_1176_000504_movie_t-3.jpg", "titan_clip_1176_000504_movie_t-2.jpg", "titan_clip_1176_000504_movie_t-1.jpg", "titan_clip_1176_000504_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban neighborhood street with one narrow lane each way and no median shows clean pavement and light traffic as the road curves gently right. Ahead on the right edge of the ego lane, a pedestrian in white pants walks away along the curb where there is no sidewalk, potentially entering the ego path. At the left curb near the camera, a white van is stopped and protrudes into the lane, further constricting space for the ego vehicle. No signals or signs are salient, and no oncoming vehicles appear.", "hazard_reasoning": "There is a pedestrian walking on the left side of the lane, wearing white pants, away from the ego car, because there is no sidewalk. The pedestrian has no safe sidewalk space and may step unpredictably into your path, so you should manoeuvre carefully around them to avoid a collision."}
{"id": "train_00450", "split": "train", "clip_key": "titan_clip_868_000222_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_868_000222_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_868_000222_movie_t-3_augB1.jpg", "titan_clip_868_000222_movie_t-2_augB1.jpg", "titan_clip_868_000222_movie_t-1_augB1.jpg", "titan_clip_868_000222_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "In a dense urban commercial street, the ego car moves along a narrow single-lane roadway without a centerline; the asphalt is mostly smooth with minor cracks, and motor traffic is light while pedestrian activity is heavy. A small white van ahead in the same lane is stopped near the left side, constraining the ego vehicle's pace. On the right side, the tall pedestrian in a blue shirt and black pants walks toward the ego car along the roadway and may drift into its path. Several other pedestrians ahead near the middle of the lane also walk toward the camera, partially occupying the travel path. A woman at the near-right edge walks toward the camera very close to the curb. Shopfront displays and a parked bicycle line the left side, narrowing lateral clearance.", "hazard_reasoning": "The tall pedestrian in a blue shirt and black pants is walking on the right side of the road, towards the ego car. The driver should manoeuvre carefully to avoid a collision as the pedestrian approaches the vehicle's path."}
{"id": "train_00451", "split": "train", "clip_key": "titan_clip_1030_000486_movie", "source": {"subset": "titan", "scenario": "clip_1030", "frame": "000486"}, "frames": ["titan_clip_1030_000486_movie_t-3.jpg", "titan_clip_1030_000486_movie_t-2.jpg", "titan_clip_1030_000486_movie_t-1.jpg", "titan_clip_1030_000486_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban shopping street with stone paving forms a two-way road without marked lanes, and traffic is light and slow. A large covered truck is parked along the right curb, narrowing the passage. Ahead in the same direction, a small white van moves slowly in the center and briefly pauses, setting the ego vehicle's pace. On the right side of the road, a pedestrian wearing a striped T-shirt and black pants walks away from the ego car along the roadway because the parked vehicle leaves little space at the edge. On the left by storefronts, another pedestrian walks near the curb toward the camera while remaining outside the travel path.", "hazard_reasoning": "There is a pedestrian wearing a striped t-shirt and black pants, walking on the right side of the road, away from the ego car, because of a parked vehicle. The pedestrian may enter the lane unexpectedly and the driver should manoeuvre carefully around them to avoid a collision, so as to maintain safety."}
{"id": "train_00452", "split": "train", "clip_key": "2020-0218-103119_034097_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "034097"}, "frames": ["2020-0218-103119_034097_movie_t-3.jpg", "2020-0218-103119_034097_movie_t-2.jpg", "2020-0218-103119_034097_movie_t-1.jpg", "2020-0218-103119_034097_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial unfolds with three lanes in the ego direction, including a curbside right-turn lane; the pavement is dry and smooth and traffic is moderate. Oncoming lanes run on the far side separated by paint with steady opposing movement. A white box truck ahead in the ego lane drives away from the camera, gradually gaining distance and setting our pace. To its left, a yellow cement mixer slightly ahead continues straight at a similar speed, staying in lane without merging. On the right, a small white car in the turn-only lane advances toward the intersection, remaining outside our path. Overhead traffic lights span the junction ahead.", "hazard_reasoning": "There is a white truck driving away from the ego car in the ego lane. The truck may stop suddenly at the red light ahead, so the driver should be aware."}
{"id": "train_00453", "split": "train", "clip_key": "2020-0203-114632_004662_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "004662"}, "frames": ["2020-0203-114632_004662_movie_t-3.jpg", "2020-0203-114632_004662_movie_t-2.jpg", "2020-0203-114632_004662_movie_t-1.jpg", "2020-0203-114632_004662_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for the pedestrian crossing.", "environment_perception": "In an urban area, the ego car approaches a signalized intersection on a two-way single-lane road with a painted centerline and smooth pavement, and overall traffic is light. Ahead, a pedestrian crosses the marked crosswalk from right to left in front of the ego lane toward the left side of the intersection while the signal ahead shows red. A small truck is stopped just beyond the crosswalk in the ego lane, constraining the path. In the oncoming lane a white van approaches from ahead and proceeds straight without encroaching.", "hazard_reasoning": "There is a pedestrian crossing in front of the ego car to the left side of the intersection via the crosswalk, because the traffic light is red. The driver must stop to yield to the crossing pedestrian and obey the red light."}
{"id": "train_00454", "split": "train", "clip_key": "titan_clip_258_000072_movie", "source": {"subset": "titan", "scenario": "clip_258", "frame": "000072"}, "frames": ["titan_clip_258_000072_movie_t-3.jpg", "titan_clip_258_000072_movie_t-2.jpg", "titan_clip_258_000072_movie_t-1.jpg", "titan_clip_258_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with no median and fair asphalt runs between close buildings, with light traffic as the ego vehicle proceeds in the left lane past parked cars. Ahead on the right edge, a pedestrian, described as wearing a pink shirt, walks away from the camera along the shoulder, close to the travel lane and may step into the ego path. On the right, a white SUV stands nose-out at a driveway, stopped near the lane and positioned to merge into the roadway. Parked vehicles, including a black sedan along the left curb, constrain the width. A painted stop marking is visible on the pavement.", "hazard_reasoning": "There is a pedestrian wearing a pink shirt and walking on the right side of the road, away from the ego car. You should manoeuvre carefully to maintain a safe distance and avoid their path."}
{"id": "train_00455", "split": "train", "clip_key": "2020-0213-143552_067721_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "067721"}, "frames": ["2020-0213-143552_067721_movie_t-3.jpg", "2020-0213-143552_067721_movie_t-2.jpg", "2020-0213-143552_067721_movie_t-1.jpg", "2020-0213-143552_067721_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban two-lane arterial carries traffic in the ego direction beside a hedge median that separates oncoming lanes; the pavement is dry and traffic flows slowly at moderate density. A white box truck directly ahead in the ego lane by the median is slowing and dictates the ego car's pace. To the left, a small silver van travels slightly ahead in the adjacent lane at a similar speed, restricting room to change lanes. Farther ahead in that left lane, a dark sedan also proceeds slowly near the truck, keeping gaps tight. Buildings and storefronts line both sides, with no pedestrians or obstacles entering the roadway.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane. The truck's deceleration could lead to a collision if the driver does not reduce speed, so the driver should slow down to maintain a safe following distance."}
{"id": "train_00456", "split": "train", "clip_key": "titan_clip_1097_000444_movie", "source": {"subset": "titan", "scenario": "clip_1097", "frame": "000444"}, "frames": ["titan_clip_1097_000444_movie_t-3.jpg", "titan_clip_1097_000444_movie_t-2.jpg", "titan_clip_1097_000444_movie_t-1.jpg", "titan_clip_1097_000444_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban street with mid-rise buildings, a narrow single carriageway without a median, and smooth pavement shows light same-direction traffic as the ego vehicle moves past a zebra crossing. On the left just ahead, a pedestrian in a white shirt and black pants pushes a cart away from the ego along the curb, staying near the travel path and reducing passing clearance. Immediately beyond, a black van is stopped at the curb partly in the lane, further narrowing the left side. Farther ahead, a small car travels away in the same direction. A 30 km/h speed limit sign stands on the left.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and pushing a cart away from the ego car, on the left side of the road. This pedestrian may veer into the driving lane unexpectedly while pushing the cart, so the driver should carefully manoeuvre around them."}
{"id": "train_00457", "split": "train", "clip_key": "2020-0212-102546_036958_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "036958"}, "frames": ["2020-0212-102546_036958_movie_t-3.jpg", "2020-0212-102546_036958_movie_t-2.jpg", "2020-0212-102546_036958_movie_t-1.jpg", "2020-0212-102546_036958_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated structure, with three same-direction lanes, smooth pavement, and moderate flow. The ego car travels in the left lane. A white truck directly ahead changes to the right lane in front of the ego car, moving across along the dashed divider. To the right, a silver hatchback slightly ahead continues straight at a similar speed, close to the merging area and limiting the available gap. Farther ahead in the right lane, a larger box truck proceeds slowly, and vehicles queue behind it, affecting pace in that lane. A circular roadside sign on the left shows 50 as the posted speed, and dense city buildings line both sides.", "hazard_reasoning": "There is a white truck changing lanes to the right lane, in front of the ego car. Because it is merging into the ego's lane ahead, the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_00458", "split": "train", "clip_key": "titan_clip_695_000312_movie", "source": {"subset": "titan", "scenario": "clip_695", "frame": "000312"}, "frames": ["titan_clip_695_000312_movie_t-3.jpg", "titan_clip_695_000312_movie_t-2.jpg", "titan_clip_695_000312_movie_t-1.jpg", "titan_clip_695_000312_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street without a centerline runs between shops, the dry pavement slightly worn and traffic light but slow with no visible oncoming vehicles. Ahead in the ego lane, a gray van slows to a crawl, queuing behind congestion further up the street and constraining the ego car's pace. On the right beside a storefront, several pedestrians move along the curb; a woman with an umbrella edges into the roadway before continuing forward, making them relevant as they could step into the ego lane. Farther along the same side, others stand near the curb by shop displays, remaining close to traffic and potentially encroaching. A covered parked car and freestanding signboards on the right narrow the usable roadway.", "hazard_reasoning": "There is a gray van slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision with the decelerating van."}
{"id": "train_00459", "split": "train", "clip_key": "2020-0207-101955_118843_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "118843"}, "frames": ["2020-0207-101955_118843_movie_t-3.jpg", "2020-0207-101955_118843_movie_t-2.jpg", "2020-0207-101955_118843_movie_t-1.jpg", "2020-0207-101955_118843_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway has three same-direction lanes divided from oncoming traffic by a planted median; the pavement is dry and smooth, and traffic grows heavy ahead with a slow queue. A blue sedan directly ahead in the ego lane slows because of congestion, holding the ego vehicle's pace. Farther ahead in the same lane, a white box truck creeps near the front of the queue and continues to bottleneck flow. In the right lane, several white cars line up along a guardrail and crawl, with their position adjacent to the ego lane making potential merges likely.", "hazard_reasoning": "There is a blue sedan slowing in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid collision due to reduced speeds ahead."}
{"id": "train_00460", "split": "train", "clip_key": "titan_clip_496_000162_movie", "source": {"subset": "titan", "scenario": "clip_496", "frame": "000162"}, "frames": ["titan_clip_496_000162_movie_t-3.jpg", "titan_clip_496_000162_movie_t-2.jpg", "titan_clip_496_000162_movie_t-1.jpg", "titan_clip_496_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "A narrow urban two-way road with a single left-hand lane in each direction curves right between buildings; pavement is clean and traffic is light. A large orange work truck ahead in the ego lane slows near the left curb, constraining the ego vehicle's pace through the bend. On the right-side walkway ahead, a pedestrian wearing blue pants walks away from the ego car along the green rail, remaining outside the lane. On the left edge beside the truck, a worker stands by a trolley on the curb close to the travel lane, potentially encroaching on it.", "hazard_reasoning": "There is a pedestrian wearing blue pants and walking on the right side of the road, away from the ego car. Drivers should be aware of this pedestrian ahead to anticipate any unexpected movement into the driving lane."}
{"id": "train_00461", "split": "train", "clip_key": "titan_clip_936_000480_movie", "source": {"subset": "titan", "scenario": "clip_936", "frame": "000480"}, "frames": ["titan_clip_936_000480_movie_t-3.jpg", "titan_clip_936_000480_movie_t-2.jpg", "titan_clip_936_000480_movie_t-1.jpg", "titan_clip_936_000480_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one narrow lane each direction has no median and smooth pavement; the ego vehicle approaches a zebra crosswalk, and traffic is light with only a few vehicles parked. On the left at the crosswalk, a woman in black pants and a white shirt talks on the phone while waiting to cross to the right, and she may step into the ego lane. On the right edge of the crosswalk, a person stands with a rolling suitcase, pausing and possibly preparing to cross, which makes them relevant to the ego vehicle's path. Just beyond the crosswalk, a black SUV is parked along the left curb, narrowing the usable lane. Far ahead in the oncoming lane, a cyclist approaches slowly toward the camera but stays in their lane. A roadside convex mirror is mounted on the right corner near the crosswalk.", "hazard_reasoning": "There is a woman wearing black pants and a white shirt, talking on the phone, and waiting to cross at a crosswalk on the left side of the road, to the right side. She may step into the roadway while distracted, so you should stop immediately to avoid a collision."}
{"id": "train_00462", "split": "train", "clip_key": "2020-0220-102630_094383_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_094383_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_094383_movie_t-3_augB1.jpg", "2020-0220-102630_094383_movie_t-2_augB1.jpg", "2020-0220-102630_094383_movie_t-1_augB1.jpg", "2020-0220-102630_094383_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of merging motorcyclist.", "environment_perception": "An urban divided arterial with three same-direction lanes stretches ahead, with a landscaped median on the left and a guardrail on the right; the dry pavement looks smooth and traffic is moderate and steady. A black motorcycle ahead to the left moves right to change from the left lane into the ego lane, potentially merging in front. A light-colored sedan directly ahead in the ego lane continues at a steady pace, constraining the ego vehicle's speed. A large blue truck in the right adjacent lane holds its lane and proceeds straight alongside. An overhead direction sign indicates through movement, and a pedestrian overpass spans the roadway ahead.", "hazard_reasoning": "There is a black motorcycle lane changing from the left lane to the ego lane. Since the motorcycle is merging into the ego lane, the driver must be aware to avoid a potential side collision."}
{"id": "train_00463", "split": "train", "clip_key": "titan_clip_240_000246_movie", "source": {"subset": "titan", "scenario": "clip_240", "frame": "000246"}, "frames": ["titan_clip_240_000246_movie_t-3.jpg", "titan_clip_240_000246_movie_t-2.jpg", "titan_clip_240_000246_movie_t-1.jpg", "titan_clip_240_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial intersection appears on a well-paved two-lane road with no median, continuing into a narrower street ahead; traffic is light. On the left side of the intersection, a person wearing a blue shirt pushes a cart toward the ego car across the crosswalk, and may enter the ego lane. Along the near-left curb, a large green bus is stopped at the corner, occupying part of the roadway and narrowing the view to the left. On the right corner, a pedestrian waits on the sidewalk near the crosswalk, remaining clear of the ego path.", "hazard_reasoning": "There is a person wearing a blue shirt and pushing a cart on the left side of the intersection, toward the ego car. The driver should manoeuvre carefully around the pedestrian pushing a cart to avoid a collision."}
{"id": "train_00464", "split": "train", "clip_key": "titan_clip_118_000432_movie", "source": {"subset": "titan", "scenario": "clip_118", "frame": "000432"}, "frames": ["titan_clip_118_000432_movie_t-3.jpg", "titan_clip_118_000432_movie_t-2.jpg", "titan_clip_118_000432_movie_t-1.jpg", "titan_clip_118_000432_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrians", "environment_perception": "A narrow urban street lined by tall buildings has no centerline and smooth pavement, with light traffic and steady forward motion. Ahead on the left, a group of pedestrians wearing black shirts walks toward the ego vehicle along the curb and edges near the roadway, so they may enter the travel path. A red flatbed truck is stopped on the right side close to the camera, protruding into the lane and narrowing the passage. Farther ahead in the same lane, a small vehicle continues away at low speed, lightly constraining pace. Parking and direction signs are visible on the left facade, and bicycles are parked along the right sidewalk.", "hazard_reasoning": "There is a group of pedestrians wearing black shirts and walking towards the ego car, on the left side of the road. They are approaching the vehicle's path, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_00465", "split": "train", "clip_key": "2020-0217-144444_017111_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "017111"}, "frames": ["2020-0217-144444_017111_movie_t-3.jpg", "2020-0217-144444_017111_movie_t-2.jpg", "2020-0217-144444_017111_movie_t-1.jpg", "2020-0217-144444_017111_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban multi-lane road approaches a junction under a pedestrian overpass; the pavement is dry and traffic becomes heavy. A gray van directly ahead in the ego lane slows because of congestion ahead, constraining the ego car's pace. To the right, a white hatchback draws level and edges ahead while staying in its lane near the ego vehicle. Farther ahead slightly right, a large box truck also slows in the same direction, feeding the queue. A stationary sedan sits in the far left curb lane, reducing usable space.", "hazard_reasoning": "There is a gray van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The gray van's deceleration indicates congested traffic ahead, so the driver should reduce speed to maintain a safe following distance."}
{"id": "train_00466", "split": "train", "clip_key": "2020-0225-102455_074634_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "074634"}, "frames": ["2020-0225-102455_074634_movie_t-3.jpg", "2020-0225-102455_074634_movie_t-2.jpg", "2020-0225-102455_074634_movie_t-1.jpg", "2020-0225-102455_074634_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop safely to avoid collision.", "environment_perception": "An urban multi-lane arterial with no physical median and smooth pavement carries heavy, mostly stopped traffic. A white van directly ahead in the ego lane is stopped because of congestion and blocks the path. A large white box truck is alongside on the left, creeping forward near the lane line and limiting a move to the left. On the right, a black taxi beside the ego vehicle inches ahead in the adjacent lane, also constraining a lane change. A 50 speed-limit sign is visible on the right.", "hazard_reasoning": "There is a white van stopped in the ego lane because of traffic congestion ahead. The van's sudden stop due to congestion poses a high collision risk, so the driver should stop safely to avoid collision."}
{"id": "train_00467", "split": "train", "clip_key": "titan_clip_746_000432_movie", "source": {"subset": "titan", "scenario": "clip_746", "frame": "000432"}, "frames": ["titan_clip_746_000432_movie_t-3.jpg", "titan_clip_746_000432_movie_t-2.jpg", "titan_clip_746_000432_movie_t-1.jpg", "titan_clip_746_000432_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban street with close-set buildings appears as a narrow two-way road with one lane each direction, no median, and smooth pavement; there is no visible vehicular traffic, and movement is slow due to pedestrians in the roadway. A group of pedestrians ahead along the left edge walks toward the camera while spilling into the ego lane, limiting the available space. On the right edge, a pedestrian wearing a blue shirt and carrying a bag walks toward the ego car beside the curb and may step into the lane. Farther ahead near the center of the road, another pedestrian crosses from right to left, potentially entering the ego vehicle's path.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and carrying a bag, walking toward the ego car on the right side of the road. The driver should manoeuvre carefully to maintain a safe distance and avoid a collision."}
{"id": "train_00468", "split": "train", "clip_key": "titan_clip_1037_000540_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1037_000540_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1037_000540_movie_t-3_augB1.jpg", "titan_clip_1037_000540_movie_t-2_augB1.jpg", "titan_clip_1037_000540_movie_t-1_augB1.jpg", "titan_clip_1037_000540_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be cautious of cyclist ahead", "environment_perception": "An urban two-way street with a single narrow lane in each direction and no median unfolds ahead; the pavement is smooth and traffic is light. The ego vehicle proceeds in the left lane past storefronts and bollards. Ahead in the middle of the road, a cyclist in a blue shirt and black pants rides away from the ego car, taking the center of the lane to bypass a parked white van and constraining the ego vehicle's pace. On the right, two pedestrians step off the sidewalk and start crossing toward the left, potentially entering the ego lane ahead. Farther ahead, a small car and a scooter continue away in the same direction. A large white van is stopped along the left curb, narrowing the lane.", "hazard_reasoning": "There is a cyclist wearing a blue shirt and black pants, and cycling away from the ego car, in the middle of the road, because of the parked vehicle. The driver should be cautious of the cyclist occupying the lane to avoid a potential collision."}
{"id": "train_00469", "split": "train", "clip_key": "titan_clip_561_000096_movie", "source": {"subset": "titan", "scenario": "clip_561", "frame": "000096"}, "frames": ["titan_clip_561_000096_movie_t-3.jpg", "titan_clip_561_000096_movie_t-2.jpg", "titan_clip_561_000096_movie_t-1.jpg", "titan_clip_561_000096_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban residential alley with a single shared lane and no sidewalk runs between close buildings; the asphalt is dry and worn, and motor traffic is absent so movement is slow and cautious. On the left edge ahead, a pedestrian in a blue dress with a backpack walks away from the car along the curb because there is no sidewalk. In the center ahead, a person in white walks away within the ego path, so the vehicle must follow at a gentle pace. Farther ahead, a small group of pedestrians approaches in the middle of the lane and may require additional slowing to pass safely. Dense roadside vegetation narrows the margins but does not intrude into the travel path.", "hazard_reasoning": "The pedestrian in a blue dress, with a backpack, is walking on the left side of the road, away from the ego car, because there is no sidewalk. The driver should slow down to maintain a safe distance in case they step into the lane unexpectedly."}
{"id": "train_00470", "split": "train", "clip_key": "2020-0210-101957_072448_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "072448"}, "frames": ["2020-0210-101957_072448_movie_t-3.jpg", "2020-0210-101957_072448_movie_t-2.jpg", "2020-0210-101957_072448_movie_t-1.jpg", "2020-0210-101957_072448_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single narrow lane each way runs between close storefronts and apartments; the pavement is smooth and traffic is light. The ego vehicle follows a small white truck stopped directly ahead in the ego lane at a signalized intersection, and the overhead traffic light shows red, so the truck blocks the path. The oncoming lane remains clear with no vehicles passing. A car sits in a recessed bay on the left and bicycles are stationary by the right sidewalk.", "hazard_reasoning": "A white truck is stopped in front of the ego car in the ego lane because the light is red. You should stop to maintain a safe distance and obey the traffic signal."}
{"id": "train_00471", "split": "train", "clip_key": "titan_clip_1188_000138_movie", "source": {"subset": "titan", "scenario": "clip_1188", "frame": "000138"}, "frames": ["titan_clip_1188_000138_movie_t-3.jpg", "titan_clip_1188_000138_movie_t-2.jpg", "titan_clip_1188_000138_movie_t-1.jpg", "titan_clip_1188_000138_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban side street with cobblestone pavement and no centerline runs between tall buildings, functioning as a two-way road with light traffic. The gray sedan ahead has stopped along the left side in the ego lane, narrowing the passage and partially blocking the path. Two pedestrians are ahead in the lane, one walking away near the center-left and another standing at the right curb, both close to the vehicle's path and potentially affecting its progress. Farther ahead, a small white van travels away in the same direction toward a distant junction. Parking signs are posted along the left frontage.", "hazard_reasoning": "There is a gray sedan that has stopped on the left side of the road, in the ego lane. The stopped gray sedan blocks the driving lane, so the driver should carefully manoeuvre around it to avoid a collision."}
{"id": "train_00472", "split": "train", "clip_key": "titan_clip_937_000270_movie", "source": {"subset": "titan", "scenario": "clip_937", "frame": "000270"}, "frames": ["titan_clip_937_000270_movie_t-3.jpg", "titan_clip_937_000270_movie_t-2.jpg", "titan_clip_937_000270_movie_t-1.jpg", "titan_clip_937_000270_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the white truck", "environment_perception": "A narrow urban residential two-way street without a centerline stretches ahead; the pavement looks damp and traffic is light with no moving vehicles visible. A white truck is parked on the right while a pedestrian unloads it, narrowing the roadway and partly occupying the ego lane. Two pedestrians near the truck move along and around it, one walking near the center and another standing by the rear, making them relevant as they may enter the ego path. A red scooter is parked at the right curb beside a guardrail, adding a static obstacle next to the unloading area.", "hazard_reasoning": "There is a white truck parked on the right side of the road because it is being unloaded by a pedestrian. The parked truck and unloading activity reduce the available road width and risk collision if the driver does not avoid it, so the driver should manoeuvre around the white truck."}
{"id": "train_00473", "split": "train", "clip_key": "2020-0212-102546_024146_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "024146"}, "frames": ["2020-0212-102546_024146_movie_t-3.jpg", "2020-0212-102546_024146_movie_t-2.jpg", "2020-0212-102546_024146_movie_t-1.jpg", "2020-0212-102546_024146_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with stopped vehicle", "environment_perception": "An urban divided arterial with two lanes in the ego direction and a hedge median shows clean, dry pavement and heavy, slow traffic. A burgundy hatchback directly ahead in the ego lane is stopped because of traffic congestion and holds the ego vehicle. Farther ahead in the same lane, a white box truck also waits in the queue, limiting the forward view. In the adjacent left lane, several cars line up and inch forward parallel to the ego lane without merging. Across the hedge to the right, oncoming cars and small trucks pass steadily.", "hazard_reasoning": "A burgundy hatchback is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop promptly to avoid a rear-end collision with the halted vehicle ahead."}
{"id": "train_00474", "split": "train", "clip_key": "2020-0220-102630_100044_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_100044_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_100044_movie_t-3_augB1.jpg", "2020-0220-102630_100044_movie_t-2_augB1.jpg", "2020-0220-102630_100044_movie_t-1_augB1.jpg", "2020-0220-102630_100044_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down for traffic congestion ahead", "environment_perception": "An urban arterial with two lanes in the ego direction runs alongside a high concrete barrier, the pavement is dry, and traffic is moderate. Ahead in the ego lane, a small truck with a covered bed moves slowly and effectively sets the ego vehicle's pace. In the left lane slightly ahead, a white bus proceeds straight at a similar speed without encroaching on the ego lane. A pedestrian overpass spans the road, and a roadside sign posts a 50 speed limit.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The truck's reduced speed due to congestion means the driver should slow down to maintain a safe following distance and avoid collision."}
{"id": "train_00475", "split": "train", "clip_key": "titan_clip_554_000390_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_554_000390_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_554_000390_movie_t-3_augB1.jpg", "titan_clip_554_000390_movie_t-2_augB1.jpg", "titan_clip_554_000390_movie_t-1_augB1.jpg", "titan_clip_554_000390_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian.", "environment_perception": "An urban two-way road with one lane each direction curves right past a hatched bus stop bay; the pavement is smooth and traffic is light. A pedestrian wearing a cap crosses ahead from the left to the right in front of the ego car toward the bus stop, briefly occupying the ego lane and constraining the vehicle's pace. A small black car ahead near the left edge is stopped partly in the ego lane, narrowing the passage the ego must take.", "hazard_reasoning": "A pedestrian wearing a cap is crossing the street, in front of the ego car, to the right side. You should yield because the pedestrian is entering your path at the crosswalk."}
{"id": "train_00476", "split": "train", "clip_key": "2020-0213-143552_032476_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "032476"}, "frames": ["2020-0213-143552_032476_movie_t-3.jpg", "2020-0213-143552_032476_movie_t-2.jpg", "2020-0213-143552_032476_movie_t-1.jpg", "2020-0213-143552_032476_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban street in a dense city center runs ahead, a narrow single carriageway with no centerline or divider and smooth pavement, and traffic is light. A white box truck is stopped along the left curb ahead, protruding slightly into the travel lane as people unload it, which narrows the path. Two workers stand and move around the rear of the truck in the roadway near the ego lane, handling items and potentially stepping into the vehicle's path.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because there are people unloading it. This parked truck partially blocks the roadway and may conceal unloading pedestrians, so the driver should carefully manoeuvre around it."}
{"id": "train_00477", "split": "train", "clip_key": "titan_clip_826_000438_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_826_000438_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_826_000438_movie_t-3_augB1.jpg", "titan_clip_826_000438_movie_t-2_augB1.jpg", "titan_clip_826_000438_movie_t-1_augB1.jpg", "titan_clip_826_000438_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian waiting to cross", "environment_perception": "A dense urban commercial street appears, with a two-lane two-way road marked by a dashed centerline and no median; the asphalt looks worn, and traffic is moderate but slows near curbside loading and cones. A white box truck ahead in the ego lane progresses slowly along the left side, constraining the ego vehicle's pace. An oncoming green mini truck continues in its right-hand lane past roadside cones as the carriageway narrows. A pedestrian wearing a red shirt and pushing a trolley waits on the left edge of the road to cross close to the ego path. Parked and loading trucks line the left shoulder, and the cones on the right create a minor bottleneck.", "hazard_reasoning": "There is a pedestrian wearing a red shirt and pushing a trolley, waiting on the left side of the road to cross. The pedestrian may step into the roadway unexpectedly while handling the trolley, so the driver should be aware of their intention."}
{"id": "train_00478", "split": "train", "clip_key": "2020-0217-110854_044736_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "044736"}, "frames": ["2020-0217-110854_044736_movie_t-3.jpg", "2020-0217-110854_044736_movie_t-2.jpg", "2020-0217-110854_044736_movie_t-1.jpg", "2020-0217-110854_044736_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes, a striped buffer leading to a right-side ramp, smooth pavement, and moderate steady flow. A black taxi directly ahead in the ego lane cruises at a constant speed and sets the pace. In the left lane, a white van slightly ahead moves slowly near the curb, limiting space for any left merge. Behind it in the same lane, a white sedan follows closely and keeps pace with the van. Overhead green direction signs and an ETC sign mark upcoming expressway options, and guardrails line the right edge as the ramp diverges.", "hazard_reasoning": "There are no visible hazards since the construction materials remain off the roadway and traffic is flowing normally, so the driver can continue without special caution."}
{"id": "train_00479", "split": "train", "clip_key": "2020-0203-154554_028244_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "028244"}, "frames": ["2020-0203-154554_028244_movie_t-3.jpg", "2020-0203-154554_028244_movie_t-2.jpg", "2020-0203-154554_028244_movie_t-1.jpg", "2020-0203-154554_028244_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban three-lane one-way road runs between high-rise buildings toward an elevated expressway, the pavement clean and dry. Traffic is heavy and queuing, with little movement. Directly ahead in the ego lane, a large flatbed semi-truck is stopped and blocks the path due to congestion ahead. In the left adjacent lane, a white van alongside inches forward, keeping close to the lane line and limiting any chance to merge left. In the right lane, a small white van slightly ahead is also stopped in the same queue.", "hazard_reasoning": "There is a white semi-truck stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the stopped truck in congested traffic."}
{"id": "train_00480", "split": "train", "clip_key": "2020-0220-102630_018518_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "018518"}, "frames": ["2020-0220-102630_018518_movie_t-3.jpg", "2020-0220-102630_018518_movie_t-2.jpg", "2020-0220-102630_018518_movie_t-1.jpg", "2020-0220-102630_018518_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction runs between mid-rise buildings; the pavement is dry and traffic is heavy in stop-and-go flow. A white sedan directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. In the adjacent right lane, a gray hatchback beside the ego and a white van just ahead creep forward in the queue, limiting any chance to merge. Farther ahead in the right lane, a tall box truck remains stationary and blocks the view up the road. A 50 km/h speed limit sign stands on the left.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle."}
{"id": "train_00481", "split": "train", "clip_key": "2020-0205-103411_110832_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "110832"}, "frames": ["2020-0205-103411_110832_movie_t-3.jpg", "2020-0205-103411_110832_movie_t-2.jpg", "2020-0205-103411_110832_movie_t-1.jpg", "2020-0205-103411_110832_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes has dry, smooth asphalt and slow, queued traffic approaching a signalized intersection. Overhead signs and a pedestrian overpass span the roadway, and the traffic signal ahead shows red. A white van directly ahead in the ego lane is stopped at the red light, blocking the ego car's path. To the left, a black minivan slightly ahead rolls forward slowly in its lane, matching the queue and preventing an easy merge. To the right, a white hatchback ahead decelerates in its lane and stays alongside the ego vehicle, keeping pace with the queue. No unusual obstacles are visible.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of a red traffic light. The white van's sudden stop at the red light requires the driver to stop promptly to avoid a rear-end collision."}
{"id": "train_00482", "split": "train", "clip_key": "titan_clip_523_000480_movie", "source": {"subset": "titan", "scenario": "clip_523", "frame": "000480"}, "frames": ["titan_clip_523_000480_movie_t-3.jpg", "titan_clip_523_000480_movie_t-2.jpg", "titan_clip_523_000480_movie_t-1.jpg", "titan_clip_523_000480_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane each way has no divider, worn pavement, and light traffic. Directly ahead, a pedestrian wearing a white shirt and gray pants crosses in front of the car toward the left side of the street, constraining the car's movement. At the right edge, another pedestrian holding a light umbrella also moves left across the lane toward the same curb, prolonging the blockage. A blue one-way arrow sign on the corner points right into a side street. A black van is parked along the left curb ahead, reducing available space near the corner.", "hazard_reasoning": "A pedestrian wearing a white shirt with gray pants is crossing in front of the ego car to the left side of the street. Because the pedestrian is entering the vehicle's path, the driver must stop to prevent a collision."}
{"id": "train_00483", "split": "train", "clip_key": "2020-0228-150133_010081_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "010081"}, "frames": ["2020-0228-150133_010081_movie_t-3.jpg", "2020-0228-150133_010081_movie_t-2.jpg", "2020-0228-150133_010081_movie_t-1.jpg", "2020-0228-150133_010081_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane per direction runs between mid-rise buildings; the pavement looks dry and intact, and traffic is queued at a signal. A solid orange centerline divides directions and overall flow is stopped. A white box truck directly ahead in the ego lane stands still because the traffic light ahead is red, holding the ego car behind it. To the left along the curb, a black van and a taxi wait stopped beside the truck without affecting the ego lane. Ahead at the crosswalk on the right side of the intersection, several pedestrians walk across from right to left while the signal remains red.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane because of a red traffic light ahead. The truck has halted at the red light, so you need to stop to avoid a rear-end collision."}
{"id": "train_00484", "split": "train", "clip_key": "titan_clip_570_000144_movie", "source": {"subset": "titan", "scenario": "clip_570", "frame": "000144"}, "frames": ["titan_clip_570_000144_movie_t-3.jpg", "titan_clip_570_000144_movie_t-2.jpg", "titan_clip_570_000144_movie_t-1.jpg", "titan_clip_570_000144_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway lacks a centerline, the asphalt looks smooth, and traffic is light. The ego car proceeds in the left portion of the road with no median. A white van is parked on the right side of the road beside the curb, remaining stationary while leaving the ego lane clear. A small white car ahead in the same direction continues straight at a steady pace in the ego lane. Far ahead, another vehicle travels toward the camera in the oncoming lane. A bold zebra crossing spans the road in the foreground.", "hazard_reasoning": "There is a white van parked on the right side of the road. The stationary van narrows the roadway and may force vehicles to swerve, so the driver should manoeuvre carefully around it to maintain safe clearance."}
{"id": "train_00485", "split": "train", "clip_key": "2020-0213-143552_022803_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "022803"}, "frames": ["2020-0213-143552_022803_movie_t-3.jpg", "2020-0213-143552_022803_movie_t-2.jpg", "2020-0213-143552_022803_movie_t-1.jpg", "2020-0213-143552_022803_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial carries slow, moderate traffic on dry pavement, with two same-direction lanes on the left separated from oncoming traffic on the right by a row of red bollards. A white truck directly ahead in the ego lane slows, constraining our pace. In the adjacent left lane, a silver hatchback travels slowly alongside and may merge ahead into our lane. Farther ahead in that left lane, a larger box truck creeps toward the junction, adding to the queue. A blue overhead directional sign with route numbers and arrows is visible above, and pedestrians wait along the right sidewalk.", "hazard_reasoning": "There is a white truck, slowing, in front of the ego car, in the ego lane. Because the truck is decelerating in your lane, you risk a rear-end collision if you maintain speed, so you should slow down to keep a safe distance."}
{"id": "train_00486", "split": "train", "clip_key": "2020-0227-104226_019384_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "019384"}, "frames": ["2020-0227-104226_019384_movie_t-3.jpg", "2020-0227-104226_019384_movie_t-2.jpg", "2020-0227-104226_019384_movie_t-1.jpg", "2020-0227-104226_019384_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane road runs under an elevated structure, with two same-direction lanes, painted dividers, a right-side guardrail, and clean pavement; traffic is moderate and flows steadily toward a signalized intersection. A small white van travels directly ahead in the ego lane and continues straight through the junction on a green light, so it dictates the ego car's pace. To the left, a larger white van cruises slightly ahead in the adjacent lane, keeping its lane while moving parallel to the ego vehicle. Farther ahead, several cars in both lanes proceed under the flyover with steady gaps, maintaining flow. The traffic signal ahead displays green as the vehicles pass beneath it.", "hazard_reasoning": "A white van is driving in front of the ego car in the ego lane, because of the green traffic light. You should follow the vehicle ahead to maintain a safe distance and be prepared for a potential signal change."}
{"id": "train_00487", "split": "train", "clip_key": "2020-0217-110854_043995_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "043995"}, "frames": ["2020-0217-110854_043995_movie_t-3.jpg", "2020-0217-110854_043995_movie_t-2.jpg", "2020-0217-110854_043995_movie_t-1.jpg", "2020-0217-110854_043995_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated roadway with three same-direction lanes, a right-side guardrail, and buildings on the left; the dry pavement appears smooth and traffic is light. A black van ahead in the ego lane drives away at a steady pace, maintaining a clear gap. A cyclist rides along the left edge slightly ahead, moving forward near the curb and potentially edging into the near lane. A small car in the right lane advances in the same direction parallel to the ego vehicle, staying within its lane.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car. The driver should follow the vehicle ahead to maintain a safe distance and allow sufficient reaction time in case of sudden braking."}
{"id": "train_00488", "split": "train", "clip_key": "titan_clip_1205_000018_movie", "source": {"subset": "titan", "scenario": "clip_1205", "frame": "000018"}, "frames": ["titan_clip_1205_000018_movie_t-3.jpg", "titan_clip_1205_000018_movie_t-2.jpg", "titan_clip_1205_000018_movie_t-1.jpg", "titan_clip_1205_000018_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist ahead", "environment_perception": "An urban side street with shops appears, a narrow two-way road without a centerline and smooth pavement, and traffic is light as the car proceeds slowly in the left lane. Ahead on the left edge, a cyclist wearing black pants rides away along the curb, keeping the same direction and possibly setting the pace. Farther ahead in the same lane, a silver van stands near the left curb, reducing the usable width. A pedestrian ahead near the center-left walks away along the roadway within the ego lane. Parked motorcycles and bicycles line the right curb but remain clear of the lane.", "hazard_reasoning": "There is a cyclist wearing black pants, cycling on the left side of the road, away from the ego car. The driver should be aware of the cyclist's position to anticipate potential movements and maintain a safe driving path."}
{"id": "train_00489", "split": "train", "clip_key": "2020-0214-145407_023471_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "023471"}, "frames": ["2020-0214-145407_023471_movie_t-3.jpg", "2020-0214-145407_023471_movie_t-2.jpg", "2020-0214-145407_023471_movie_t-1.jpg", "2020-0214-145407_023471_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane divided road with a hedge-lined barrier and smooth dry pavement carries light, steady traffic. A brown dump truck ahead in the ego lane accelerates away as the space in front of it remains clear, so it briefly sets then releases the ego car's pace. A white sedan in the adjacent right lane moves forward at a similar speed while maintaining its lane and not encroaching on the ego path. Several cars line the far-right curb near an access road, some appearing stopped and not interacting with traffic. Overhead directional signs are visible, and no hazards or signals stand out.", "hazard_reasoning": "There is a brown truck driving away from the ego car because the road ahead is clear, in front of the truck. Maintaining a safe following distance ensures the driver can react promptly if the truck brakes or an obstacle appears."}
{"id": "train_00490", "split": "train", "clip_key": "2020-0210-155354_041969_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "041969"}, "frames": ["2020-0210-155354_041969_movie_t-3.jpg", "2020-0210-155354_041969_movie_t-2.jpg", "2020-0210-155354_041969_movie_t-1.jpg", "2020-0210-155354_041969_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction and double white center lines has smooth pavement and light, steady traffic. A silver van drives ahead in the ego lane near the center line and gradually pulls away, effectively setting the ego car's pace. A motorcyclist slightly ahead to the left continues straight in the left lane in the same direction and could move toward the ego lane, so it remains relevant. Oncoming vehicles travel in the right-side lanes at a distance without affecting the path. A signalized intersection is visible further ahead on a gantry. A white van is parked along the left curb outside the travel lane.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car. Because the vehicle ahead may brake suddenly, you should follow the vehicle ahead to maintain a safe distance."}
{"id": "train_00491", "split": "train", "clip_key": "titan_clip_271_000036_movie", "source": {"subset": "titan", "scenario": "clip_271", "frame": "000036"}, "frames": ["titan_clip_271_000036_movie_t-3.jpg", "titan_clip_271_000036_movie_t-2.jpg", "titan_clip_271_000036_movie_t-1.jpg", "titan_clip_271_000036_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban single-lane street runs between tall buildings with smooth pavement, no median, and very light traffic. Two pedestrians in white shirts and dark pants are ahead in the middle of the lane, walking away from the ego vehicle as they go around a silver car stopped on the left, so they occupy the ego path and constrain its approach. The silver hatchback is parked partly in the lane, creating a pinch point near the curb. A small bicycle is parked by the left sidewalk, and distant pedestrians appear near the far intersection.", "hazard_reasoning": "There are two pedestrians wearing white shirts and black pants, walking in the middle of the road, away from the ego car, because of the parked vehicle. They are forced into the travel lane to avoid the parked car, increasing the risk of collision if approached at normal speed."}
{"id": "train_00492", "split": "train", "clip_key": "2020-0226-101332_035616_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "035616"}, "frames": ["2020-0226-101332_035616_movie_t-3.jpg", "2020-0226-101332_035616_movie_t-2.jpg", "2020-0226-101332_035616_movie_t-1.jpg", "2020-0226-101332_035616_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-lane road runs under an elevated expressway, with a guardrail separating a parallel side lane on the right; the pavement is dry and traffic is heavy and slow. A black sedan directly ahead in the ego lane slows as a red sedan from the left lane moves over in front of it. A white van farther ahead in the same lane is stopped in the queue and keeps the line crawling. A large green truck in the far-left lane creeps forward alongside.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane, because a red sedan is lane changing in front of it. This lane change forces sudden deceleration of the following vehicle, increasing the risk of a rear-end collision without prompt action."}
{"id": "train_00493", "split": "train", "clip_key": "2020-0214-145407_043373_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "043373"}, "frames": ["2020-0214-145407_043373_movie_t-3.jpg", "2020-0214-145407_043373_movie_t-2.jpg", "2020-0214-145407_043373_movie_t-1.jpg", "2020-0214-145407_043373_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multilane road runs under an elevated expressway, the asphalt dry and intact, with heavy stop-and-go traffic. An overhead sign ahead shows lane-use arrows for left-turn and through movements. Directly ahead in the ego lane, a white van is stopped because congestion blocks the way, holding the ego vehicle. In the adjacent right lane a gray sedan a little farther ahead inches forward with the queue and could drift left into the ego lane as gaps open. Alongside on the right, a dark minivan advances slowly parallel to the ego car, constraining any lateral movement.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid rear-ending the halted vehicle and maintain a safe following distance."}
{"id": "train_00494", "split": "train", "clip_key": "2020-0206-101736_016703_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "016703"}, "frames": ["2020-0206-101736_016703_movie_t-3.jpg", "2020-0206-101736_016703_movie_t-2.jpg", "2020-0206-101736_016703_movie_t-1.jpg", "2020-0206-101736_016703_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs beside a planted, fenced median that separates oncoming traffic; the pavement is smooth and traffic is light to moderate. A small white truck travels ahead in the ego lane with no congestion visible in front, so it sets the immediate pace. In the adjacent right lane slightly farther ahead, a dark car moves past the truck and may merge back ahead of the ego vehicle. On the left sidewalk, a pedestrian walks along the curb behind the railing and does not affect the roadway. Opposite-direction vehicles beyond the median flow steadily.", "hazard_reasoning": "There is a white truck driving in front of the ego car in the ego lane, because of no traffic congestion ahead. The truck may brake suddenly or obscure hazards beyond, so maintain a safe distance and follow its movements."}
{"id": "train_00495", "split": "train", "clip_key": "2020-0227-104226_077560_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "077560"}, "frames": ["2020-0227-104226_077560_movie_t-3.jpg", "2020-0227-104226_077560_movie_t-2.jpg", "2020-0227-104226_077560_movie_t-1.jpg", "2020-0227-104226_077560_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential scene shows a narrow two-way street with one lane in each direction, no median, and dry, well-kept pavement; traffic is light with no oncoming vehicles visible. Ahead in the ego lane, a black van travels away at a steady pace because the road ahead is clear, remaining in lane and gradually increasing the gap. A white car is parked tight to the left curb near a small side street, remaining stationary off the travel lane. A convex safety mirror and a short curb island with posts on the right edge slightly narrow the roadway but do not impede movement.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car, because the road ahead is clear. As this van leads the way, the driver should follow it to maintain a safe distance and anticipate any sudden braking."}
{"id": "train_00496", "split": "train", "clip_key": "2020-0226-140503_107107_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "107107"}, "frames": ["2020-0226-140503_107107_movie_t-3.jpg", "2020-0226-140503_107107_movie_t-2.jpg", "2020-0226-140503_107107_movie_t-1.jpg", "2020-0226-140503_107107_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane in each direction runs between mid-rise buildings, divided by short raised medians, with a painted shoulder and smooth dry pavement; traffic is light and steady. A black sedan approaches in the oncoming lane to the right of the median, continuing straight past without encroaching on the ego lane. Far ahead in the ego lane, a white van proceeds straight in the same direction, distant and not constraining pace. On the left sidewalk, a cyclist moves forward behind a guardrail, parallel to the road. Overhead blue directional signs are visible ahead.", "hazard_reasoning": "Based on the clear conditions and absence of road users or obstacles, there are no immediate hazards. The driver can maintain speed and lane position without additional caution."}
{"id": "train_00497", "split": "train", "clip_key": "2020-0207-101955_106510_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "106510"}, "frames": ["2020-0207-101955_106510_movie_t-3.jpg", "2020-0207-101955_106510_movie_t-2.jpg", "2020-0207-101955_106510_movie_t-1.jpg", "2020-0207-101955_106510_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial runs under an elevated expressway with smooth pavement and heavy, stop-and-go flow in at least two lanes in the ego direction. A blue sedan is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle. Farther ahead in the same lane, a large white box truck inches forward toward the queue, further constraining progress. In the adjacent right lane, a white minibus and a red hatchback queue alongside at low speed, limiting opportunities to merge. No traffic signals or unusual signs are visible, and no pedestrians or cyclists appear.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. You should stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_00498", "split": "train", "clip_key": "titan_clip_821_000468_movie", "source": {"subset": "titan", "scenario": "clip_821", "frame": "000468"}, "frames": ["titan_clip_821_000468_movie_t-3.jpg", "titan_clip_821_000468_movie_t-2.jpg", "titan_clip_821_000468_movie_t-1.jpg", "titan_clip_821_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "In a dense urban area, the ego vehicle moves along a very narrow two-way street without a centerline or median; the asphalt is smooth and traffic is light with no moving cars. Orange cones sit on the left by a storefront. Two pedestrians ahead on the right side of the lane walk toward the ego vehicle because there is no sidewalk, and they occupy part of its lane. Another pedestrian farther ahead along the left edge walks away in the same direction, keeping close to the buildings. A no-entry sign is visible at a side street on the left.", "hazard_reasoning": "There are two pedestrians carrying backpacks and wearing shorts walking in front of and toward the ego car on the right side of the lane, because there is no sidewalk. The driver should carefully manoeuvre around these pedestrians to avoid collision."}
{"id": "train_00499", "split": "train", "clip_key": "2020-0218-103119_002897_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002897"}, "frames": ["2020-0218-103119_002897_movie_t-3.jpg", "2020-0218-103119_002897_movie_t-2.jpg", "2020-0218-103119_002897_movie_t-1.jpg", "2020-0218-103119_002897_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the approaching van", "environment_perception": "An urban multi-lane arterial runs straight on dry, well-kept pavement, with opposing directions divided by a wide painted chevron buffer and overall light to moderate flow. The ego vehicle travels in the left lane. A dark car ahead in the same lane proceeds steadily, setting the pace. Farther ahead in a neighboring same-direction lane, a white van continues straight without changing lanes. In the oncoming lanes to the right, a gray van drives toward us in the right lane while remaining across the painted buffer. Strong sunlight from the upper left creates glare that slightly washes out distant details.", "hazard_reasoning": "There is a gray van driving towards the ego car, in the right lane. The gray van in the right lane is approaching and may cross into the ego-vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_00500", "split": "train", "clip_key": "titan_clip_402_000438_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_402_000438_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_402_000438_movie_t-3_augB1.jpg", "titan_clip_402_000438_movie_t-2_augB1.jpg", "titan_clip_402_000438_movie_t-1_augB1.jpg", "titan_clip_402_000438_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian approaching on left", "environment_perception": "An urban commercial street with a single narrow two-way lane paved with interlocking bricks, no median, and light to moderate traffic. The surface is smooth but the path is narrowed by parked vehicles on both sides, especially a white truck with a yellow tarp at the right curb. A small dark truck ahead in the ego lane moves slowly away, constraining the car's pace on the tight roadway. An oncoming white van approaches in the opposite lane near the center, reducing clearance as it passes. A pedestrian wearing a white shirt and white pants walks toward the ego vehicle along the left side, close to the roadway and may step into the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and white pants, and walking toward the ego car on the left side of the road. The driver should be aware of this pedestrian to anticipate a potential crossing and avoid collision."}
{"id": "train_00501", "split": "train", "clip_key": "2020-0213-143552_021267_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "021267"}, "frames": ["2020-0213-143552_021267_movie_t-3.jpg", "2020-0213-143552_021267_movie_t-2.jpg", "2020-0213-143552_021267_movie_t-1.jpg", "2020-0213-143552_021267_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth dry pavement runs between tall buildings, with red-and-white bollards edging a narrow curbside divider on the right. Traffic is heavy and largely stopped near a signalized intersection ahead. A gray tarp-covered truck directly in front of the ego car is stopped because of congestion and blocks the lane. A white box truck slightly ahead in the lane to the left is also waiting, limiting any lane change. A silver compact car to the left of the ego vehicle creeps forward in the queue. Several pedestrians stand on the right sidewalk near the corner behind a guardrail, showing no movement toward the roadway.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid rear-ending the halted truck due to the sudden stop in traffic."}
{"id": "train_00502", "split": "train", "clip_key": "2020-0220-151845_047855_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "047855"}, "frames": ["2020-0220-151845_047855_movie_t-3.jpg", "2020-0220-151845_047855_movie_t-2.jpg", "2020-0220-151845_047855_movie_t-1.jpg", "2020-0220-151845_047855_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway carries three same-direction lanes with a right-side guardrail; the pavement is dry and the flow is moderate with brief slowdowns. A small white van ahead in the rightmost ego lane moves slowly near the rail, directly constraining the ego vehicle's pace. Slightly farther ahead in the adjacent center lane, a flatbed truck hauling a beige-covered load also eases off, remaining close enough to hinder an easy lane change. To the left, several passenger cars and a dark minivan overtake and weave forward through gaps, keeping a steadier pace than the right lanes. Overhead blue directional signs span the roadway, and no unusual obstacles or work zones appear.", "hazard_reasoning": "There is a red and yellow truck slowing in front of the ego car, in the ego lane. Therefore, the driver should reduce speed to maintain a safe following distance behind this decelerating vehicle."}
{"id": "train_00503", "split": "train", "clip_key": "titan_clip_555_000186_movie", "source": {"subset": "titan", "scenario": "clip_555", "frame": "000186"}, "frames": ["titan_clip_555_000186_movie_t-3.jpg", "titan_clip_555_000186_movie_t-2.jpg", "titan_clip_555_000186_movie_t-1.jpg", "titan_clip_555_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian ahead", "environment_perception": "An urban alley-like street lined with shops narrows to a single shared lane with no center line, the asphalt looks smooth and traffic is light. On the left edge ahead, a pedestrian in a white T-shirt and black shorts walks toward the ego car along the roadway, potentially entering the travel path. A silver sedan is parked immediately to the right in a marked bay with its rear protruding, narrowing the available lane beside the ego vehicle. Farther ahead near the middle of the road, another pedestrian moves away along the lane, gently constraining pace. Shop signboards and displays jut from the left frontage into the roadway, further tightening clearance.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and black shorts walking on the left side of the road, towards the ego car. The pedestrian may step into the driving lane unexpectedly, so the driver should stay alert and adjust speed to maintain a safe distance."}
{"id": "train_00504", "split": "train", "clip_key": "2020-0210-155354_040622_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "040622"}, "frames": ["2020-0210-155354_040622_movie_t-3.jpg", "2020-0210-155354_040622_movie_t-2.jpg", "2020-0210-155354_040622_movie_t-1.jpg", "2020-0210-155354_040622_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement runs straight, the ego car traveling in the left lane with a wide painted median to the right separating oncoming lanes; overall traffic is light. A gray minivan directly ahead in the ego lane is stopped with its brake light on, constraining the ego vehicle. A few vehicles move in the opposite direction in the far-right lanes and pass without interaction.", "hazard_reasoning": "There is a gray vehicle stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a collision with the halted vehicle."}
{"id": "train_00505", "split": "train", "clip_key": "2020-0207-151349_014406_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_014406_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_014406_movie_t-3_augB1.jpg", "2020-0207-151349_014406_movie_t-2_augB1.jpg", "2020-0207-151349_014406_movie_t-1_augB1.jpg", "2020-0207-151349_014406_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop behind the white van", "environment_perception": "An urban multi-lane road with smooth pavement is at a standstill near an intersection, with a curbside hedge on the right and strong sun glare. Traffic in the same direction is heavy and queued. A white van directly ahead in the ego lane is stopped, angled left to turn and merge into the adjacent queue. A large box truck slightly ahead to the right is stationary in the next lane, blocking forward view and space. Another box truck close on the left is also stopped alongside, narrowing the corridor.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because it is turning left and merging into stopped traffic. Stop behind the van to maintain a safe distance and avoid collision as it merges into traffic."}
{"id": "train_00506", "split": "train", "clip_key": "2020-0226-140503_070878_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "070878"}, "frames": ["2020-0226-140503_070878_movie_t-3.jpg", "2020-0226-140503_070878_movie_t-2.jpg", "2020-0226-140503_070878_movie_t-1.jpg", "2020-0226-140503_070878_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way boulevard with three lanes in the ego direction plus a left-turn lane runs between mid-rise buildings; pavement is smooth and traffic is light to moderate as the car approaches a wide signalized intersection and zebra crossing. A small white box truck runs just ahead to the right in the adjacent lane, continuing straight at a similar pace and remaining alongside through the approach. A dark van is farther ahead in the center lane traveling straight, loosely constraining the ego vehicle's speed. A blue car sits to the front-left in the dedicated left-turn lane near the stop line, waiting to turn and staying out of the ego lane.", "hazard_reasoning": "No potential hazards are detected ahead, allowing the driver to continue driving safely under current conditions."}
{"id": "train_00507", "split": "train", "clip_key": "2020-0220-151845_041372_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "041372"}, "frames": ["2020-0220-151845_041372_movie_t-3.jpg", "2020-0220-151845_041372_movie_t-2.jpg", "2020-0220-151845_041372_movie_t-1.jpg", "2020-0220-151845_041372_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided roadway runs under an elevated expressway with concrete barriers on both sides, forming two same-direction lanes on smooth pavement and producing slow, stop-and-go flow ahead. Directly ahead in the ego lane, a tarp-covered truck slows to a crawl in a growing queue, constraining the ego vehicle's pace, consistent with traffic congestion. In the adjacent right lane, a silver van moves alongside near the barrier and eases its speed, remaining in its lane without merging. Farther ahead, several cars in both lanes bunch under the columns, maintaining the bottleneck that continues to hold traffic. No traffic signals or unusual signs are visible.", "hazard_reasoning": "A red truck is slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance due to the reduced speed of the truck ahead."}
{"id": "train_00508", "split": "train", "clip_key": "2020-0131-135401_006434_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "006434"}, "frames": ["2020-0131-135401_006434_movie_t-3.jpg", "2020-0131-135401_006434_movie_t-2.jpg", "2020-0131-135401_006434_movie_t-1.jpg", "2020-0131-135401_006434_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane in each direction and a solid yellow centerline runs past mid-rise buildings and a convenience store, the pavement smooth and traffic light, while bright sun glare from the right washes part of the view. A white box truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. Several vehicles are stopped along the left curb near the store entrance, reducing lateral clearance but remaining stationary. No oncoming traffic is close and the opposite lane stays clear.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane. The truck's deceleration may require the driver to brake suddenly to maintain a safe following distance, so the driver should reduce speed accordingly."}
{"id": "train_00509", "split": "train", "clip_key": "titan_clip_452_000342_movie", "source": {"subset": "titan", "scenario": "clip_452", "frame": "000342"}, "frames": ["titan_clip_452_000342_movie_t-3.jpg", "titan_clip_452_000342_movie_t-2.jpg", "titan_clip_452_000342_movie_t-1.jpg", "titan_clip_452_000342_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban side street with a single general-traffic lane and a green bike lane on the right runs between low-rise buildings; the pavement is smooth and there is no motor traffic ahead, so flow is light. On the right side of the road, a man wearing a blue shirt and black pants walks toward the ego car along the bike lane and could edge near the travel lane. Farther ahead on the right, two other pedestrians also approach in the same direction along the curb, remaining outside the lane. On the left sidewalk, a pedestrian with a backpack walks toward the camera behind bollards, separated from the roadway. No traffic signals or posted speed signs are prominent.", "hazard_reasoning": "There is a man wearing a blue shirt and black pants walking on the right side of the road toward the ego car. The pedestrian is approaching the vehicle's path and may step into the lane, so the driver should slow down to avoid collision."}
{"id": "train_00510", "split": "train", "clip_key": "2020-0207-101955_106273_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "106273"}, "frames": ["2020-0207-101955_106273_movie_t-3.jpg", "2020-0207-101955_106273_movie_t-2.jpg", "2020-0207-101955_106273_movie_t-1.jpg", "2020-0207-101955_106273_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated viaduct, with same-direction lanes separated from the opposite side by a barrier; the asphalt is dry and traffic is slow with a queue forming ahead. A blue sedan directly ahead in the ego lane decelerates because congestion builds under the overpass and it sets the ego vehicle's pace. Farther ahead, a box truck and several cars line up in the same direction, inching forward and creating the bottleneck. To the right, a white van in the adjacent lane travels slowly slightly ahead, matching the queue and remaining in its lane.", "hazard_reasoning": "There is a blue sedan slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead, so the driver should slow down to maintain a safe distance and adapt to the reduced speed of traffic."}
{"id": "train_00511", "split": "train", "clip_key": "titan_clip_507_000162_movie", "source": {"subset": "titan", "scenario": "clip_507", "frame": "000162"}, "frames": ["titan_clip_507_000162_movie_t-3.jpg", "titan_clip_507_000162_movie_t-2.jpg", "titan_clip_507_000162_movie_t-1.jpg", "titan_clip_507_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban side street with a single narrow carriageway and no centerline runs between buildings and a right-side guardrail; the asphalt is smooth with a few dark patches, and traffic is very light with no vehicles seen. On the left close to the camera, a pedestrian wearing a white shirt walks away from the ego car along the curb, remaining near the travel path. Farther ahead, several pedestrians also walk away along the left edge of the roadway, partially occupying the lane and constraining the pace. Another person stands at a shop entrance on the left beside the roadway, close to the lane. No salient traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the left side of the road, away from the ego car. You should be aware because the pedestrian may step onto the road unexpectedly, requiring prompt driver attention aligned with the warning."}
{"id": "train_00512", "split": "train", "clip_key": "2020-0206-142535_014738_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "014738"}, "frames": ["2020-0206-142535_014738_movie_t-3.jpg", "2020-0206-142535_014738_movie_t-2.jpg", "2020-0206-142535_014738_movie_t-1.jpg", "2020-0206-142535_014738_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "be aware of the black sedan", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection with smooth pavement and moderate two-way traffic; the ego vehicle is in the left-side lanes typical of Japan while oncoming flow uses the right-side lanes. On the right side of the intersection, a black sedan drives toward the ego car in the oncoming lane and continues through the junction, potentially passing in front of the ego path. Close behind it, a small white van also approaches toward the camera in the same oncoming lane, following the sedan. Farther ahead beyond the intersection, several cars and a small truck proceed straight away from the camera in the ego direction at a steady pace. A pedestrian stands on the left sidewalk near the corner, remaining clear of the roadway.", "hazard_reasoning": "There is a black sedan driving in the right side of the intersection towards the ego car. The black sedan approaching from the right may cut in or cross the ego-vehicle's path at the intersection, so the driver should stay vigilant."}
{"id": "train_00513", "split": "train", "clip_key": "titan_clip_1141_000192_movie", "source": {"subset": "titan", "scenario": "clip_1141", "frame": "000192"}, "frames": ["titan_clip_1141_000192_movie_t-3.jpg", "titan_clip_1141_000192_movie_t-2.jpg", "titan_clip_1141_000192_movie_t-1.jpg", "titan_clip_1141_000192_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow two-way urban residential street without a centerline stretches ahead; the asphalt is smooth and traffic is light with no oncoming vehicles. Covered cars line the right shoulder beside building scaffolding, slightly narrowing the lane. Ahead on the right edge, a pedestrian in a white shirt and hat walks away from the ego-car along the curb, giving space to another pedestrian farther ahead. Near mid-block on the right, a person stands beside a bicycle at the curb and may step into the lane. No salient traffic signals or signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and a hat, and walking on the right side of the road, away from the ego-car, because of another pedestrian. The pedestrian may unexpectedly step into the roadway, so the driver should carefully manoeuvre to avoid collision."}
{"id": "train_00514", "split": "train", "clip_key": "2020-0129-105040_067901_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "067901"}, "frames": ["2020-0129-105040_067901_movie_t-3.jpg", "2020-0129-105040_067901_movie_t-2.jpg", "2020-0129-105040_067901_movie_t-1.jpg", "2020-0129-105040_067901_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban two-way street with a single lane each way approaches a compact intersection; the pavement is dry and slightly worn, and traffic is light. A white van ahead in the ego lane slows and comes to a stop at the intersection, momentarily setting the pace. On the right side of the intersection, two cyclists wait at the curb to cross the crosswalk. An oncoming small van approaches slowly along the far street toward the junction. Several pedestrians stand near the left corner by the storefront, lingering on the sidewalk without stepping into the road. Overhead traffic signals hang above the junction, though their aspects are not clearly visible.", "hazard_reasoning": "There is a cyclist who has stopped on the left side of the intersection, because they are waiting to cross a crosswalk. The cyclist is positioned at the roadway edge, creating a collision risk if the driver maintains speed or cuts in too close, so the driver should manoeuvre carefully around them."}
{"id": "train_00515", "split": "train", "clip_key": "2020-0227-104226_085112_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "085112"}, "frames": ["2020-0227-104226_085112_movie_t-3.jpg", "2020-0227-104226_085112_movie_t-2.jpg", "2020-0227-104226_085112_movie_t-1.jpg", "2020-0227-104226_085112_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between sound walls, the pavement clean and dry, and traffic is heavy and slow. Directly ahead in the ego lane a red mid-size SUV slows and queues because congestion builds behind a white box truck farther ahead, constraining the ego vehicle. In the left adjacent lane a red sedan creeps forward alongside at similar speed, limiting room to change lanes. To the right, across a narrow median, a silver truck approaches in the oncoming lane and continues past.", "hazard_reasoning": "There is a red mid-SUV slowing in front of the ego car because of traffic congestion ahead. The driver should reduce speed to maintain a safe distance and avoid a collision in this congested traffic."}
{"id": "train_00516", "split": "train", "clip_key": "2020-0220-151845_051511_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "051511"}, "frames": ["2020-0220-151845_051511_movie_t-3.jpg", "2020-0220-151845_051511_movie_t-2.jpg", "2020-0220-151845_051511_movie_t-1.jpg", "2020-0220-151845_051511_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road beneath an elevated expressway carries heavy, stop-and-go traffic; the ego vehicle proceeds in the left lane next to a concrete barrier, with a solid yellow line separating the adjacent right lane. A red flatbed truck directly ahead in the ego lane is stopped because of congestion and holds the ego vehicle in place. To the right, a light blue minivan moves alongside at a crawl in the neighboring lane, constraining any lane change. Farther ahead in that right lane, a silver van inches forward with the queue. A blue roadside sign on the left points to Route 20 destinations and the Shuto Expressway.", "hazard_reasoning": "A red truck is stopped in front of the ego car in the ego lane, because of traffic congestion. Therefore, you should stop to avoid collision with the stationary vehicle ahead."}
{"id": "train_00517", "split": "train", "clip_key": "titan_clip_628_000090_movie", "source": {"subset": "titan", "scenario": "clip_628", "frame": "000090"}, "frames": ["titan_clip_628_000090_movie_t-3.jpg", "titan_clip_628_000090_movie_t-2.jpg", "titan_clip_628_000090_movie_t-1.jpg", "titan_clip_628_000090_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with smooth asphalt and no center divider appears lightly trafficked by vehicles, with pedestrians dominating the scene. Two pedestrians carrying handbags walk ahead in the middle of the roadway away from the ego-vehicle, occupying the travel path and setting the pace. On the right edge near the camera, a man walks toward the ego along the curb with part of his stride in the lane, close to the vehicle's path. Farther ahead near the shops, several pedestrians on both sides move along the shoulders and a few begin to cross the street, reducing available space in the lane. No other moving vehicles are visible.", "hazard_reasoning": "There are two pedestrians carrying handbags, walking in the middle of the road away from the ego car. They pose a collision risk as they occupy the driving lane unpredictably, so the driver should slow down to maintain safety."}
{"id": "train_00518", "split": "train", "clip_key": "titan_clip_467_000048_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_467_000048_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_467_000048_movie_t-3_augB1.jpg", "titan_clip_467_000048_movie_t-2_augB1.jpg", "titan_clip_467_000048_movie_t-1_augB1.jpg", "titan_clip_467_000048_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street features a narrow single-lane roadway paved with interlocking bricks and lined with bollards that separate the sidewalks; there is no centerline or median, and traffic is light with no moving vehicles. On the right close to the ego path, a woman in a black dress and white shirt carrying a handbag steps off the curb and crosses toward the left, potentially entering the lane. A man on the right sidewalk walks along the storefronts behind the bollards and does not enter the road. Several pedestrians ahead stay on the sidewalks and do not affect the lane.", "hazard_reasoning": "There is a woman in a black dress and a white shirt, carrying a handbag and crossing to the left side of the street. The driver should slow down because a pedestrian is actively crossing the roadway and could enter the vehicle's path unexpectedly."}
{"id": "train_00519", "split": "train", "clip_key": "2020-0207-101955_092369_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "092369"}, "frames": ["2020-0207-101955_092369_movie_t-3.jpg", "2020-0207-101955_092369_movie_t-2.jpg", "2020-0207-101955_092369_movie_t-1.jpg", "2020-0207-101955_092369_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a large signalized intersection beneath an elevated expressway. The pavement looks smooth with painted medians and arrows, and traffic is moderate as vehicles queue at the light. A blue sedan directly ahead in the ego lane is stopped at the stop line because the traffic signal ahead shows red, holding the ego car. A flatbed truck carrying a van is in the left lane slightly ahead and slows with the queue, remaining beside the ego vehicle without merging. Several trucks in the adjacent right lanes head toward the intersection and decelerate to join the same red-light queue.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car in the ego lane, because of a red traffic light ahead. You should stop to avoid rear-ending the stopped vehicle at the red light."}
{"id": "train_00520", "split": "train", "clip_key": "titan_clip_177_000150_movie", "source": {"subset": "titan", "scenario": "clip_177", "frame": "000150"}, "frames": ["titan_clip_177_000150_movie_t-3.jpg", "titan_clip_177_000150_movie_t-2.jpg", "titan_clip_177_000150_movie_t-1.jpg", "titan_clip_177_000150_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist crossing the street", "environment_perception": "An urban commercial street with tall buildings forms a two-lane two-way road without a median and with smooth pavement; traffic is light to moderate and briefly slows near a crosswalk. A white kei car directly ahead in the left ego lane cruises and then decelerates. A cyclist wearing a cap and a white shirt crosses from left to right in the middle of the road ahead, briefly entering the ego path and prompting the lead car to check speed. On the left by the convenience store, several pedestrians approach the crosswalk and wait at the curb, close enough that they could enter after the cyclist. Farther ahead, a box truck in the same direction proceeds slowly, tempering the overall pace.", "hazard_reasoning": "There is a cyclist wearing a cap and a white shirt, and crossing the street from left to right, in the middle of the road. The driver must yield because the cyclist is actively crossing the roadway and poses a collision risk."}
{"id": "train_00521", "split": "train", "clip_key": "titan_clip_1204_000324_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1204_000324_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1204_000324_movie_t-3_augB1.jpg", "titan_clip_1204_000324_movie_t-2_augB1.jpg", "titan_clip_1204_000324_movie_t-1_augB1.jpg", "titan_clip_1204_000324_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban street with a single narrow travel lane curves left, with no median and smooth pavement; traffic is light. A cyclist ahead in the middle of the lane rides away from the ego vehicle, holding a central position because cones and a work area obstruct the right side, and thus the cyclist governs the ego vehicle's pace. On the right, a white work truck is parked within the coned work zone beside scaffolding, further narrowing the lane. A construction worker stands near a signboard by the cones on the right, remaining at the edge of the carriageway.", "hazard_reasoning": "There is a cyclist cycling away from the ego car in the middle of the road because of obstruction on the right side of the road. The cyclist's position in the lane reduces passing space and increases collision risk, so the driver should slow down to maintain a safe distance."}
{"id": "train_00522", "split": "train", "clip_key": "2020-0204-103442_009108_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "009108"}, "frames": ["2020-0204-103442_009108_movie_t-3.jpg", "2020-0204-103442_009108_movie_t-2.jpg", "2020-0204-103442_009108_movie_t-1.jpg", "2020-0204-103442_009108_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane divided boulevard with a grassy median and metal railings stretches ahead; the asphalt looks smooth and traffic appears heavy near an upcoming intersection. In the ego lane a black SUV is stopped directly ahead, halted by congestion in front and blocking the path. Farther ahead across the same-direction lanes a queue of cars creeps forward, constraining the overall pace. On the opposite carriageway to the right, oncoming traffic including a box truck moves steadily behind the median without interacting with the ego lane.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver needs to stop to maintain a safe distance and avoid a rear-end collision with the halted vehicle."}
{"id": "train_00523", "split": "train", "clip_key": "2020-0207-151349_087244_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "087244"}, "frames": ["2020-0207-151349_087244_movie_t-3.jpg", "2020-0207-151349_087244_movie_t-2.jpg", "2020-0207-151349_087244_movie_t-1.jpg", "2020-0207-151349_087244_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene unfolds under an elevated expressway on a two-lane two-way road, with the ego vehicle in the left lane; guardrails line both sides, pavement is smooth, and traffic is very light with no vehicles ahead. A motorcyclist travels forward on the service road to the right, moving parallel to the ego vehicle and remaining separated by the barrier. A pedestrian walks along the right sidewalk beside the guardrail, continuing parallel without approaching the lane. A dark car is parked at the far left curb outside the travel lane and does not affect the flow.", "hazard_reasoning": "The road ahead is clear with no visible hazards present, so the driver can maintain their current speed safely."}
{"id": "train_00524", "split": "train", "clip_key": "titan_clip_153_000510_movie", "source": {"subset": "titan", "scenario": "clip_153", "frame": "000510"}, "frames": ["titan_clip_153_000510_movie_t-3.jpg", "titan_clip_153_000510_movie_t-2.jpg", "titan_clip_153_000510_movie_t-1.jpg", "titan_clip_153_000510_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "A narrow urban side street with a single lane and no divider runs between tall buildings; the stone paving looks smooth and traffic is light. Ahead, a white truck is parked on the left in the ego lane because it is being unloaded, occupying much of the lane and constraining the ego vehicle's pace. Beside it at the left curb, a cyclist waits and then rolls slowly forward near the truck's tail, edging toward the ego path. On the right, a pedestrian stands by a storefront at the curb but does not step into the road. Handcarts, boxes, and several parked bicycles cluster around the unloading area, further narrowing the available gap.", "hazard_reasoning": "There is a white truck parked on the left side of the road, in the ego lane, because it is being unloaded. This obstruction reduces lane space, so the driver should carefully manoeuvre around the truck to maintain safe clearance."}
{"id": "train_00525", "split": "train", "clip_key": "titan_clip_16_000078_movie", "source": {"subset": "titan", "scenario": "clip_16", "frame": "000078"}, "frames": ["titan_clip_16_000078_movie_t-3.jpg", "titan_clip_16_000078_movie_t-2.jpg", "titan_clip_16_000078_movie_t-1.jpg", "titan_clip_16_000078_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street passes on smooth pavement with shops at curbside and no median visible, and traffic is light with no vehicles close ahead. On the right sidewalk ahead, several pedestrians stand outside storefronts and walk along the curb, occasionally pausing near doorways but not stepping into the road. Also on the right sidewalk, a person with a blue bicycle moves slowly parallel to the roadway near the curb and briefly stops by a storefront, remaining close to the edge of the carriageway. A storefront under scaffolding with cones and tape sits back from the sidewalk, and short bollards line the curb.", "hazard_reasoning": "There are no detected vehicles, obstacles, or hazardous conditions, so no driver warning is necessary."}
{"id": "train_00526", "split": "train", "clip_key": "titan_clip_506_000090_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_506_000090_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_506_000090_movie_t-3_augB1.jpg", "titan_clip_506_000090_movie_t-2_augB1.jpg", "titan_clip_506_000090_movie_t-1_augB1.jpg", "titan_clip_506_000090_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with no lane markings and smooth asphalt runs between buildings, and traffic is light with no vehicles visible ahead or oncoming. Ahead on the left, two pedestrians walk along the roadway edge because there is no sidewalk, occupying part of the ego path and constraining pace. Farther ahead near the middle of the lane, a small group of pedestrians also proceeds in the same direction, leaving limited clearance. Metal railings and bollards line the right side, and no active signals or posted limits are prominent.", "hazard_reasoning": "There are people walking on the left side road in front of the ego car because there is no sidewalk. The driver should slow down to avoid potential collisions with these pedestrians."}
{"id": "train_00527", "split": "train", "clip_key": "2020-0214-145407_011627_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "011627"}, "frames": ["2020-0214-145407_011627_movie_t-3.jpg", "2020-0214-145407_011627_movie_t-2.jpg", "2020-0214-145407_011627_movie_t-1.jpg", "2020-0214-145407_011627_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes and no median is viewed in light traffic on wet but intact pavement, and vehicles are paused at a signalized intersection. A black SUV directly ahead in the ego lane is stopped at the line for a red traffic light, holding the ego car. In the adjacent right lane, a white sedan waits slightly ahead at the intersection, remaining stationary with brake lights on. Pedestrians on both sidewalks stand near the crosswalks without entering the road. The overhead signal shows red for the ego direction, and cones and barriers mark roadwork along the right side near the intersection.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid a collision with the stationary vehicle at the red signal under this situation."}
{"id": "train_00528", "split": "train", "clip_key": "2020-0228-150133_068830_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "068830"}, "frames": ["2020-0228-150133_068830_movie_t-3.jpg", "2020-0228-150133_068830_movie_t-2.jpg", "2020-0228-150133_068830_movie_t-1.jpg", "2020-0228-150133_068830_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection with three lanes in the ego direction including a right-turn lane; the pavement looks smooth and traffic is moderate with a short queue. A black sedan is stopped directly ahead in the ego lane because the traffic light ahead is red, holding the ego vehicle. A small silver van sits in the adjacent lane to the left, stopped parallel to the ego and not encroaching on the lane. Cross traffic, including a mid-size bus, moves left to right through the intersection in front of the queue. Overhead signals facing the ego approach display red.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to avoid colliding with the halted vehicle at the red light and ensure compliance with the traffic signal."}
{"id": "train_00529", "split": "train", "clip_key": "2020-0227-104226_017794_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "017794"}, "frames": ["2020-0227-104226_017794_movie_t-3.jpg", "2020-0227-104226_017794_movie_t-2.jpg", "2020-0227-104226_017794_movie_t-1.jpg", "2020-0227-104226_017794_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated expressway with three same-direction lanes, a right-side guardrail, and smooth pavement; traffic flows light to moderate toward a signalized intersection ahead. A white box truck travels ahead in the right lane at a steady pace and partially blocks forward view, loosely setting the ego vehicle's speed. To the left ahead, a black sedan continues in the adjacent lane, accelerating slightly as it passes the ego vehicle's position. Farther ahead in the center lane, a small white van proceeds toward the junction without obvious lane changes. On the far left shoulder, a small work truck is stopped near the curb, posing a minor roadside presence. Overhead traffic signals are visible at the upcoming intersection.", "hazard_reasoning": "The truck is partially blocking the right lane and the traffic light is red, so the driver must stop to avoid a collision at the intersection."}
{"id": "train_00530", "split": "train", "clip_key": "2020-0131-135401_008907_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008907"}, "frames": ["2020-0131-135401_008907_movie_t-3.jpg", "2020-0131-135401_008907_movie_t-2.jpg", "2020-0131-135401_008907_movie_t-1.jpg", "2020-0131-135401_008907_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision", "environment_perception": "An urban two-way street with one narrow lane per direction runs between buildings, the right side restricted by a roadwork zone with cones and a parked dump truck; pavement is smooth and traffic moves slowly. A white box van ahead in the ego lane slows and comes to a stop, holding the ego vehicle as traffic queues ahead. An oncoming small van approaches in its lane past the work area, keeping near the center where the carriageway narrows. Several pedestrians walk along the left sidewalk near the curb, parallel to the ego vehicle and not entering the roadway. The work zone's barriers and equipment encroach on the lane and create a pinch point beside an open trench.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of traffic congestion ahead, in front of the ego car. The stopped van can cause a rear-end collision if the driver does not slow down and stop."}
{"id": "train_00531", "split": "train", "clip_key": "2020-0204-103442_035834_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "035834"}, "frames": ["2020-0204-103442_035834_movie_t-3.jpg", "2020-0204-103442_035834_movie_t-2.jpg", "2020-0204-103442_035834_movie_t-1.jpg", "2020-0204-103442_035834_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway segment runs under elevated structures, with two same-direction lanes bordered by guardrails and chevron boards; the pavement is smooth and traffic is moderate and slow-moving. A white box truck ahead in the ego lane drives away from the ego car and sets the pace. In the adjacent right lane slightly ahead, a dark gray hatchback proceeds along the merge markings and edges forward where the lane tapers toward the left, so it may enter the ego lane. A silver kei car to the ego's right rear keeps alongside in the right lane at similar speed, limiting room for a lane change. Red chevron signs on the barriers highlight the bend and lane shift.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00532", "split": "train", "clip_key": "titan_clip_589_000282_movie", "source": {"subset": "titan", "scenario": "clip_589", "frame": "000282"}, "frames": ["titan_clip_589_000282_movie_t-3.jpg", "titan_clip_589_000282_movie_t-2.jpg", "titan_clip_589_000282_movie_t-1.jpg", "titan_clip_589_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban two-way street with one lane each way and no median, smooth pavement, and light traffic; delivery activity along the curbs narrows the roadway. A small white box truck ahead in the ego lane travels slowly, constraining the ego vehicle as it passes the loading area. On the right, a pedestrian wearing black pants with a backpack and carrying a brown box walks away from the ego car along the curb beside the parked vans, close to the roadway. Farther ahead, an oncoming car proceeds in the opposite lane. Open van doors and stacks of boxes on the right partly protrude into the lane and act as minor obstacles.", "hazard_reasoning": "There is a pedestrian wearing black pants, carrying a backpack, and carrying a brown box, walking on the right side of the road, away from the ego car. Drivers should be aware of the pedestrian as they may step into the lane unexpectedly."}
{"id": "train_00533", "split": "train", "clip_key": "2020-0131-135401_072581_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "072581"}, "frames": ["2020-0131-135401_072581_movie_t-3.jpg", "2020-0131-135401_072581_movie_t-2.jpg", "2020-0131-135401_072581_movie_t-1.jpg", "2020-0131-135401_072581_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane divided arterial with a low hedge median and smooth pavement carries heavy, slow traffic. Flow remains compressed ahead. The black sedan directly ahead in the ego lane slows because of congestion in front and sets the ego vehicle's pace. A silver van to the right runs parallel in the adjacent lane alongside the ego car. A black minivan ahead-left in the left lane brakes with the flow, remaining slightly ahead. An overhead blue directional sign indicates lane directions.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid sudden braking in the congested traffic."}
{"id": "train_00534", "split": "train", "clip_key": "titan_clip_740_000312_movie", "source": {"subset": "titan", "scenario": "clip_740", "frame": "000312"}, "frames": ["titan_clip_740_000312_movie_t-3.jpg", "titan_clip_740_000312_movie_t-2.jpg", "titan_clip_740_000312_movie_t-1.jpg", "titan_clip_740_000312_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street narrows to a single undivided lane with patched asphalt and very light traffic, with no moving vehicles visible. Ahead on the left, a pedestrian wearing a white shirt walks away from the car along the edge of the lane, occupying part of the travel way. On the right close to the camera, another pedestrian walks toward the camera beside the curb while staying near the path. Farther ahead near the center, two pedestrians continue away toward a marked crosswalk and remain within the roadway, constraining the available path. Shop displays, cones, and signboards protrude from both sidewalks and slightly encroach on the lane, further narrowing space.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the left side of the road, away from the ego car. The driver should slow down because the pedestrian may step into the lane unexpectedly and cautious speed reduces collision risk."}
{"id": "train_00535", "split": "train", "clip_key": "titan_clip_503_000018_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_503_000018_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_503_000018_movie_t-3_augB1.jpg", "titan_clip_503_000018_movie_t-2_augB1.jpg", "titan_clip_503_000018_movie_t-1_augB1.jpg", "titan_clip_503_000018_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with a single narrow shared lane and interlocking-brick pavement runs between storefronts; there is no centerline and no other vehicles, so traffic is light. Building steps along the right reduce lateral space. Ahead on the right, a pedestrian in a blue shirt and black pants walks away from the ego vehicle along the roadway, directly in the ego path and setting the pace. At the right edge near the steps, a man in a white shirt stands facing the street close to the lane, relevant for clearance. Farther ahead near the left side, another pedestrian walks in the same direction, staying to the side.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, walking on the right side of the road, away from the ego car. The pedestrian's proximity and trajectory require the driver to carefully manoeuvre around to avoid a collision."}
{"id": "train_00536", "split": "train", "clip_key": "2020-0207-101955_051340_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "051340"}, "frames": ["2020-0207-101955_051340_movie_t-3.jpg", "2020-0207-101955_051340_movie_t-2.jpg", "2020-0207-101955_051340_movie_t-1.jpg", "2020-0207-101955_051340_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the lane-changing van.", "environment_perception": "An urban arterial with two lanes in the ego direction is divided from oncoming traffic by a hedge median; the pavement is dry and smooth, and traffic is moderate. A white van ahead in the ego lane moves left into the adjacent lane in front of the ego car, reducing the gap and shaping the ego vehicle's pace. A black car farther ahead proceeds straight in the left lane after the merge and becomes the lead vehicle. Oncoming cars travel steadily beyond the median without effect on the ego path. Pedestrians walk and wait on the left sidewalk near buildings, and a dark van is stopped at the curb close to the camera.", "hazard_reasoning": "There is a white van changing lanes from the ego lane to the left, in front of the ego car. It is merging into your lane and may force you to adjust speed or path, so stay alert."}
{"id": "train_00537", "split": "train", "clip_key": "2020-0217-110854_002167_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "002167"}, "frames": ["2020-0217-110854_002167_movie_t-3.jpg", "2020-0217-110854_002167_movie_t-2.jpg", "2020-0217-110854_002167_movie_t-1.jpg", "2020-0217-110854_002167_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban street with one narrow lane in each direction and no median runs between shops; the asphalt is smooth and traffic is heavy and mostly stopped. A red delivery motorcycle is directly ahead in the ego lane and remains stationary because congestion blocks the way, holding the ego vehicle. In front of it, a white sedan also waits behind a larger white box van farther ahead in the same lane, forming the queue that constrains pace. In the opposing lane to the left, several vans are stopped alongside, leaving little lateral clearance but staying in their lane.", "hazard_reasoning": "There is a red motorcycle stopped in the ego lane because of traffic congestion ahead. You must stop promptly to prevent a collision with the halted motorcycle."}
{"id": "train_00538", "split": "train", "clip_key": "titan_clip_1236_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1236_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1236_000204_movie_t-3_augB1.jpg", "titan_clip_1236_000204_movie_t-2_augB1.jpg", "titan_clip_1236_000204_movie_t-1_augB1.jpg", "titan_clip_1236_000204_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban two-way residential street with one lane in each direction appears smooth and dry, and traffic is light as the ego vehicle proceeds in the left lane. On the right edge near the ego lane, a pedestrian carrying a handbag walks off the curb along the green shoulder and starts to cross, likely to enter the ego path. Farther ahead by the left sidewalk, another pedestrian in dark clothing is crossing from left to right toward the center, further constraining the ego vehicle's pace. In the opposite lane, a white van approaches from ahead as oncoming traffic. A pole sign is mounted on the right sidewalk, and a bicycle is parked along the left building frontage.", "hazard_reasoning": "There is a pedestrian carrying a handbag walking crossing the road from the left side. The driver should yield to allow the pedestrian safe passage and prevent a collision."}
{"id": "train_00539", "split": "train", "clip_key": "2020-0131-135401_081222_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "081222"}, "frames": ["2020-0131-135401_081222_movie_t-3.jpg", "2020-0131-135401_081222_movie_t-2.jpg", "2020-0131-135401_081222_movie_t-1.jpg", "2020-0131-135401_081222_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated road curves gently left, bounded by concrete barriers and a tall fence, with a solid orange centerline on dry, smooth pavement; traffic is light and steady. Ahead in the ego lane, a black SUV proceeds at a moderate, steady pace through the bend, slightly easing as it follows the curve and constraining the ego vehicle's speed. Farther ahead in the same lane, a white car continues smoothly and maintains its gap. No oncoming vehicles are visible. Chevron boards along the right barrier mark the curve, and no other salient signals or signs appear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00540", "split": "train", "clip_key": "2020-0225-145150_037923_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "037923"}, "frames": ["2020-0225-145150_037923_movie_t-3.jpg", "2020-0225-145150_037923_movie_t-2.jpg", "2020-0225-145150_037923_movie_t-1.jpg", "2020-0225-145150_037923_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban one-way street with two through lanes runs between sidewalks and mid-rise buildings; the pavement is dry and smooth, and traffic moves slowly in congestion. Directly ahead in the ego lane, a small blue truck slows and inches forward because of the queue, constraining the ego car's pace. In the adjacent left lane slightly farther ahead, a white van also crawls with the same line of vehicles and remains parallel to the ego vehicle. On the left near a painted taper by the curb, a white sedan is nearly stopped and edging forward, positioned to merge into the traffic stream and possibly into the ego lane.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_00541", "split": "train", "clip_key": "2020-0129-144857_004187_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "004187"}, "frames": ["2020-0129-144857_004187_movie_t-3.jpg", "2020-0129-144857_004187_movie_t-2.jpg", "2020-0129-144857_004187_movie_t-1.jpg", "2020-0129-144857_004187_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction curves right between mid-rise buildings; the pavement looks smooth and traffic is moderate but bunches up ahead. A black SUV is stopped ahead in the ego lane because of congestion, temporarily blocking the ego car's path. On the left curb near the ego vehicle, a delivery van stands with its rear door open and slightly intrudes into the lane, narrowing space as the road curves. On the right side of the oncoming lane, a white box truck is stopped by the curb, tightening the corridor but not entering the ego lane. A few more cars queue farther ahead in the same direction.", "hazard_reasoning": "There is a black SUV that has stopped in front of the ego car in the ego lane because of traffic congestion ahead. Therefore, the driver should stop to maintain a safe distance and avoid a collision."}
{"id": "train_00542", "split": "train", "clip_key": "2020-0204-103442_071773_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-103442_071773_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-103442_071773_movie_t-3_augB1.jpg", "2020-0204-103442_071773_movie_t-2_augB1.jpg", "2020-0204-103442_071773_movie_t-1_augB1.jpg", "2020-0204-103442_071773_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with a solid yellow centerline and no median has dry pavement and slow flow toward a signalized intersection. A black sedan directly ahead in the ego lane slows with brake lights and moves toward the centerline, preparing to turn right because traffic is backed up ahead in the ego lane. Farther ahead in the same direction, a large dump truck is queued near the intersection and constrains the pace. In the oncoming lane, a small truck moves past the junction and remains clear of the ego path. Overhead traffic lights and utility lines are visible at the intersection.", "hazard_reasoning": "There is a black sedan slowing in front of the ego car and aiming to turn right, because of traffic congestion ahead in the ego lane. Slow down to maintain a safe distance and avoid collision when the sedan reduces speed or turns."}
{"id": "train_00543", "split": "train", "clip_key": "2020-0220-102630_017567_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "017567"}, "frames": ["2020-0220-102630_017567_movie_t-3.jpg", "2020-0220-102630_017567_movie_t-2.jpg", "2020-0220-102630_017567_movie_t-1.jpg", "2020-0220-102630_017567_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way arterial with no physical median and a dry, well-kept surface approaches a signalized intersection; traffic is moderate to heavy with a queue forming ahead, and oncoming flow proceeds in the opposite lanes. A white sedan ahead in the ego lane slows because congestion builds further up, constraining the ego car's pace. A small white box truck in the adjacent right lane slightly ahead continues straight through the crosswalk, overtaking the ego and making a rightward lane change impractical. Pedestrians stand on the left sidewalk near the crosswalk, waiting at the corner and potentially entering the crossing. Work-zone cones line the curb on the far right.", "hazard_reasoning": "There is a white Sedan slowing down in the ego lane in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_00544", "split": "train", "clip_key": "2020-0207-151349_082770_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "082770"}, "frames": ["2020-0207-151349_082770_movie_t-3.jpg", "2020-0207-151349_082770_movie_t-2.jpg", "2020-0207-151349_082770_movie_t-1.jpg", "2020-0207-151349_082770_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrian crossing", "environment_perception": "An urban multilane two-way road runs beneath an elevated expressway, with a signalized intersection and zebra crosswalk; the pavement is dry and traffic is light. The ego vehicle waits at the stop line. A pedestrian in a brown jacket with a backpack crosses ahead from the left toward the right sidewalk, taking advantage of the red light. A cyclist at the right curb rolls off the sidewalk onto the crosswalk and may enter the ego lane. Several oncoming vans proceed straight through the intersection without affecting the ego. The signal facing the ego shows red, and a straight-ahead sign with U-turn prohibited is posted on the mast.", "hazard_reasoning": "There is a pedestrian wearing a brown jacket and backpack, crossing at the pedestrian crosswalk to the right side of the road, because of the red light. The driver should stop to avoid colliding with the pedestrian on the crosswalk."}
{"id": "train_00545", "split": "train", "clip_key": "titan_clip_859_000336_movie", "source": {"subset": "titan", "scenario": "clip_859", "frame": "000336"}, "frames": ["titan_clip_859_000336_movie_t-3.jpg", "titan_clip_859_000336_movie_t-2.jpg", "titan_clip_859_000336_movie_t-1.jpg", "titan_clip_859_000336_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential two-way road with a single narrow lane each direction and no median runs between close buildings; the asphalt looks smooth and traffic is light as the lane curves gently right. Stacks of cardboard and bags line the right shoulder near a site covered by blue tarp, slightly narrowing the edge. On the right side ahead, a cyclist wearing a white dress rides toward the ego vehicle, approaching along the oncoming side and potentially entering the ego lane around the bend. Farther ahead near the bend, two pedestrians walk along the left edge of the roadway, sharing the space but not blocking. A round 30 speed-limit sign is posted on a pole, and a hedge and buildings create a partial blind corner at the right-hand curve.", "hazard_reasoning": "There is a cyclist wearing a white dress, cycling toward the ego car, on the right side of the road. The driver should slow down to avoid a collision as the cyclist may change direction unexpectedly."}
{"id": "train_00546", "split": "train", "clip_key": "titan_clip_463_000474_movie", "source": {"subset": "titan", "scenario": "clip_463", "frame": "000474"}, "frames": ["titan_clip_463_000474_movie_t-3.jpg", "titan_clip_463_000474_movie_t-2.jpg", "titan_clip_463_000474_movie_t-1.jpg", "titan_clip_463_000474_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck.", "environment_perception": "An urban two-way street with a single lane in each direction and no median runs between mid-rise buildings; the dry pavement looks smooth and traffic is light with no oncoming vehicles visible. Ahead in the ego lane along the left curb, a white truck is parked and partially blocks the lane, constraining the ego vehicle's path. At the left curb in the foreground, a worker handles a handcart beside parked bicycles very close to the roadway and may step into the lane. On the right, a pile of trash bags near a vending machine sits at the curb edge but stays off the travel lane.", "hazard_reasoning": "There is a white truck parked in the ego lane, on the left side of the road. The truck blocks the driving lane, requiring careful maneuvering to avoid collision."}
{"id": "train_00547", "split": "train", "clip_key": "titan_clip_453_000306_movie", "source": {"subset": "titan", "scenario": "clip_453", "frame": "000306"}, "frames": ["titan_clip_453_000306_movie_t-3.jpg", "titan_clip_453_000306_movie_t-2.jpg", "titan_clip_453_000306_movie_t-1.jpg", "titan_clip_453_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic controller ahead", "environment_perception": "An urban two-way street with a single narrow lane per direction and no median runs between mid-rise buildings; the asphalt is smooth with diamond markings, and traffic is light as the ego car proceeds in the left lane toward a small unsignalized intersection. An oncoming small truck waits at the right curb just before the junction, reducing space opposite the ego lane. A pedestrian wearing a yellow vest stands on the left roadside near the intersection and signals to control traffic, governing when approaching vehicles, including the ego car, proceed. A zebra crossing is visible at the junction, and bicycles line the left rail, narrowing the shoulder.", "hazard_reasoning": "There is a pedestrian wearing a yellow vest, standing on the left side of the road, because they are controlling the traffic. The traffic controller may signal vehicles unexpectedly, so you should be aware and prepare to adjust your driving accordingly."}
{"id": "train_00548", "split": "train", "clip_key": "titan_clip_1357_000258_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1357_000258_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1357_000258_movie_t-3_augB1.jpg", "titan_clip_1357_000258_movie_t-2_augB1.jpg", "titan_clip_1357_000258_movie_t-1_augB1.jpg", "titan_clip_1357_000258_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow lane curves right between rows of bollards and storefronts; the pavement is smooth and moving traffic is light with no vehicles ahead. A pedestrian in black pants and a blue shirt steps from the left curb and crosses to the right across the lane, momentarily occupying the ego path. On the left near a side street, a small delivery truck is stopped at the curb with its rear open, narrowing space at the junction. Beside the truck, a cyclist waits by the curb and edges forward as if preparing to enter the roadway.", "hazard_reasoning": "There is a pedestrian wearing black pant and blue shirt on the left side crossing the street to the right side. The driver should slow down to yield to the crossing pedestrian and avoid a potential collision."}
{"id": "train_00549", "split": "train", "clip_key": "titan_clip_801_000444_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_801_000444_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_801_000444_movie_t-3_augB1.jpg", "titan_clip_801_000444_movie_t-2_augB1.jpg", "titan_clip_801_000444_movie_t-1_augB1.jpg", "titan_clip_801_000444_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban side street with buildings tight to the curb lacks a centerline and divider, the pavement is smooth, and traffic is light with no moving vehicles visible. Ahead, a pedestrian with long dark hair in a white shirt crosses from right to left mid-block in front of the car where there is no crosswalk, moving directly through the ego path. Slightly farther ahead near the center of the lane, another person walks away along the roadway at a slow pace, remaining in the ego lane and limiting progress. Pedestrians on the left sidewalk linger by storefronts but stay off the road. A round speed-limit sign reading 30 is posted on a pole at the left. Parked bicycles and signboards line the right edge, tightening clearance.", "hazard_reasoning": "There is a pedestrian with long dark hair, wearing a white shirt, crossing the street in front of the ego car, from the right side of the street to the left side, because there is no crosswalk. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_00550", "split": "train", "clip_key": "titan_clip_616_000126_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_616_000126_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_616_000126_movie_t-3_augB1.jpg", "titan_clip_616_000126_movie_t-2_augB1.jpg", "titan_clip_616_000126_movie_t-1_augB1.jpg", "titan_clip_616_000126_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with no centerline stretches ahead through a small intersection, the pavement smooth and traffic light. In the continuation of the road ahead, a cyclist in black pants and a white shirt rides in the middle of the lane toward the ego vehicle, directly opposing the ego's path and constraining the approach. A few pedestrians linger near shop entrances on both sidewalks, staying off the roadway. A one-way sign and a corner convex mirror are posted on the right at the intersection, while curbside shop boards slightly narrow the usable width.", "hazard_reasoning": "A cyclist, wearing black pants and a white shirt, is cycling in the middle of the ego lane, toward the ego car. The cyclist occupies your driving lane and is approaching your vehicle directly, so you should slow down to maintain a safe distance and prevent a collision."}
{"id": "train_00551", "split": "train", "clip_key": "2020-0228-150133_019578_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "019578"}, "frames": ["2020-0228-150133_019578_movie_t-3.jpg", "2020-0228-150133_019578_movie_t-2.jpg", "2020-0228-150133_019578_movie_t-1.jpg", "2020-0228-150133_019578_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction runs between shopfronts and a right-side guardrail; the pavement is dry and traffic in the ego direction is slow with a short queue. A gray van directly ahead in the ego lane slows and creeps because of congestion ahead. Farther ahead in the same lane, a large bus waits in line, creating the bottleneck and constraining the ego vehicle's pace. In the oncoming lane to the right, a silver van approaches and passes steadily within its lane. No pedestrians or cyclists are visible, and no traffic signals are prominent.", "hazard_reasoning": "There is a gray van slowing down in the ego-lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and anticipate further deceleration due to the congestion."}
{"id": "train_00552", "split": "train", "clip_key": "2020-0218-103119_052531_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "052531"}, "frames": ["2020-0218-103119_052531_movie_t-3.jpg", "2020-0218-103119_052531_movie_t-2.jpg", "2020-0218-103119_052531_movie_t-1.jpg", "2020-0218-103119_052531_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain a safe distance.", "environment_perception": "An urban arterial with two lanes in the ego direction runs between mid-rise buildings, with a guardrail median separating oncoming lanes to the right; the pavement looks smooth and traffic is moderate. A white box truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. In the adjacent left lane a red car slightly ahead continues straight at a similar speed, reducing room to pass. To the right of the barrier, oncoming vehicles move slowly in the opposite lanes without interacting.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane. The truck's deceleration presents a risk of rear-end collision if the driver does not reduce speed promptly; the driver should slow down to maintain a safe following distance."}
{"id": "train_00553", "split": "train", "clip_key": "2020-0220-102630_075348_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "075348"}, "frames": ["2020-0220-102630_075348_movie_t-3.jpg", "2020-0220-102630_075348_movie_t-2.jpg", "2020-0220-102630_075348_movie_t-1.jpg", "2020-0220-102630_075348_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with a solid yellow centerline runs between concrete and metal barriers, the pavement dry and smooth as traffic is light to moderate but compresses farther ahead. A white van directly ahead in the ego lane slows, constrained by congestion forming down the road, and the ego car follows its pace. Oncoming cars to the right proceed steadily in their single lane without affecting the ego path. A small truck sits parked along the left edge near building scaffolding, remaining outside the lane. A yellow merge warning sign on the left suggests entering traffic ahead, and blue overhead direction boards span the roadway.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The van's deceleration signals congestion ahead, so slowing down will help maintain a safe distance and avoid abrupt braking."}
{"id": "train_00554", "split": "train", "clip_key": "2020-0225-102455_005672_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_005672_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_005672_movie_t-3_augB1.jpg", "2020-0225-102455_005672_movie_t-2_augB1.jpg", "2020-0225-102455_005672_movie_t-1_augB1.jpg", "2020-0225-102455_005672_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way road with one lane each direction runs between mid-rise buildings, divided by double solid lines; the pavement looks smooth and traffic is moderate. Ahead in the ego lane, a gray dump truck slows, constraining the vehicle's pace. In the opposite direction to the right, a small car approaches and continues straight past, separated by the median. On the left curb a dark van is parked near the lane and may reenter traffic.", "hazard_reasoning": "There is a gray truck slowing in front of the ego car, in the ego lane. You should follow the vehicle ahead to maintain a safe gap and adapt to its speed changes."}
{"id": "train_00555", "split": "train", "clip_key": "2020-0203-114632_038956_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "038956"}, "frames": ["2020-0203-114632_038956_movie_t-3.jpg", "2020-0203-114632_038956_movie_t-2.jpg", "2020-0203-114632_038956_movie_t-1.jpg", "2020-0203-114632_038956_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban four-lane two-way arterial with smooth pavement and a striped median with posts unfolds under clear skies, and traffic flows at a moderate steady pace. A silver van drives directly ahead in the ego lane at a constant speed, effectively setting the ego vehicle's pace. Farther ahead in the same lane, a small white car continues straight with similar speed, keeping a short queue in front of the van. In the opposite lanes to the right, a white truck approaches and passes by in oncoming traffic without encroaching. Flexible barriers and a hashed median separate directions, with no salient signals visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00556", "split": "train", "clip_key": "titan_clip_1221_000480_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1221_000480_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1221_000480_movie_t-3_augB1.jpg", "titan_clip_1221_000480_movie_t-2_augB1.jpg", "titan_clip_1221_000480_movie_t-1_augB1.jpg", "titan_clip_1221_000480_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban street with high-rise buildings has a single narrow undivided lane, smooth pavement, and light traffic; several vans parked along the right curb reduce the usable width. On the right ahead, a pedestrian wearing a cap and brown pants walks out from behind a parked white van into the ego vehicle's path, entering the lane and constraining its pace. A pale green minivan is parked on the right in the near foreground, and another white van stands farther ahead, leaving limited space to pass.", "hazard_reasoning": "There is a pedestrian wearing a cap and brown pants, who is walking out from behind a parked white van, on the right side of the street, in the ego lane. The pedestrian is emerging from the blind spot created by the parked van, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_00557", "split": "train", "clip_key": "2020-0203-154554_042497_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "042497"}, "frames": ["2020-0203-154554_042497_movie_t-3.jpg", "2020-0203-154554_042497_movie_t-2.jpg", "2020-0203-154554_042497_movie_t-1.jpg", "2020-0203-154554_042497_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "be aware of slowing sedan ahead", "environment_perception": "An urban multi-lane road curves right beneath an elevated structure, with solid white lane lines, smooth pavement, and light, steady traffic. A gray sedan ahead in the ego lane slows, briefly dictating the ego car's pace. In the adjacent left lane, a large box truck travels slightly ahead at a steady speed as the curve begins, limiting lateral space beside the ego vehicle. Farther ahead in the right lane, a small car continues through the bend without lane changes and stays outside the ego path. Overhead blue direction signs provide lane guidance for upcoming routes, and a guardrail along the right edge confines the roadway.", "hazard_reasoning": "There is a gray sedan slowing in the ego lane, in front of the ego car. The sedan's deceleration may require the driver to adjust speed promptly to maintain safe following distance."}
{"id": "train_00558", "split": "train", "clip_key": "titan_clip_978_000384_movie", "source": {"subset": "titan", "scenario": "clip_978", "frame": "000384"}, "frames": ["titan_clip_978_000384_movie_t-3.jpg", "titan_clip_978_000384_movie_t-2.jpg", "titan_clip_978_000384_movie_t-1.jpg", "titan_clip_978_000384_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around cyclist", "environment_perception": "A narrow urban residential two-way street without a centerline runs between close-set buildings; the dry asphalt appears smooth and traffic is light with no moving cars. On the right side ahead, a cyclist wearing white pants rides toward the ego vehicle along the curb and may encroach into the ego path. At the left edge near a hedge, a pedestrian stands beside a bicycle at the curb, close to the travel lane but remaining off the roadway. Far ahead in the center, another cyclist moves away in the same direction and stays distant. A black minivan is parked tight to the right curb, locally narrowing the lane near the oncoming cyclist.", "hazard_reasoning": "There is a cyclist wearing white pants and cycling, on the right side of the road, towards the ego-car. This cyclist may require additional space when passing, so the driver should carefully manoeuvre around them to avoid collision."}
{"id": "train_00559", "split": "train", "clip_key": "titan_clip_1265_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1265_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1265_000198_movie_t-3_augB1.jpg", "titan_clip_1265_000198_movie_t-2_augB1.jpg", "titan_clip_1265_000198_movie_t-1_augB1.jpg", "titan_clip_1265_000198_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A narrow urban two-way street with no centerline runs between close-set buildings; the pavement is smooth and traffic is light. Ahead in the ego lane, a cyclist wearing a brown shirt and cap tows a green cart, rides down the middle of the road, and shifts toward the right side, directly affecting the ego vehicle's path. Slightly farther ahead on the right, three pedestrians walk away along the edge of the roadway, at times close to the lane, reducing passing space. Parked bicycles on the left and a trash collection cage on the right constrict the corridor near a gentle right bend, limiting visibility.", "hazard_reasoning": "There is a cyclist wearing a brown shirt and cap, pulling a green cart behind his bike, riding down the middle of the road in the ego lane, and moving towards the right side of the road. The driver must carefully manoeuvre around this cyclist because he occupies the lane and is shifting position, posing a collision risk if not avoided."}
{"id": "train_00560", "split": "train", "clip_key": "titan_clip_634_000090_movie", "source": {"subset": "titan", "scenario": "clip_634", "frame": "000090"}, "frames": ["titan_clip_634_000090_movie_t-3.jpg", "titan_clip_634_000090_movie_t-2.jpg", "titan_clip_634_000090_movie_t-1.jpg", "titan_clip_634_000090_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A quiet urban side street with a narrow two-way carriageway has no centerline and is bordered by raised sidewalks and bollards; the pavement is smooth and traffic is absent, so flow is free. The road climbs gently between concrete buildings. A pedestrian on the right sidewalk ahead walks along the path toward the camera, staying behind the bollards and not entering the roadway, creating no immediate interaction with the ego lane. No notable traffic signals or speed signs are visible, and no obstacles or parked vehicles encroach on the lane.", "hazard_reasoning": "There are no visible hazards or conflicts in this scene, so no driver warning is required."}
{"id": "train_00561", "split": "train", "clip_key": "2020-0227-104226_017326_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "017326"}, "frames": ["2020-0227-104226_017326_movie_t-3.jpg", "2020-0227-104226_017326_movie_t-2.jpg", "2020-0227-104226_017326_movie_t-1.jpg", "2020-0227-104226_017326_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated structure with two lanes in the ego direction, a low divider on the left and a guardrail separating oncoming traffic on the right; the pavement looks smooth and traffic flows moderately. A white box truck is directly ahead in the ego lane and drives away at a steady pace, effectively setting the ego car's speed. Slightly ahead to the left, a white minivan continues straight in the adjacent lane at similar speed without encroaching. Beyond the guardrail on the right, vehicles travel in the opposite direction and remain separated from the ego path. Overhead blue directional signs show Route 20 with distances to Kofu 125 km, Hachioji 37 km, and Ohara 3 km.", "hazard_reasoning": "There is a white truck driving away from the ego car, in front of the ego car. The tunnel-like structure partially obscures the road ahead, limiting the driver's visibility of potential hazards; following the vehicle ahead provides visual guidance and helps maintain a safe path under reduced visibility conditions."}
{"id": "train_00562", "split": "train", "clip_key": "2020-0212-102546_048652_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "048652"}, "frames": ["2020-0212-102546_048652_movie_t-3.jpg", "2020-0212-102546_048652_movie_t-2.jpg", "2020-0212-102546_048652_movie_t-1.jpg", "2020-0212-102546_048652_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with two left-hand lanes in the ego direction runs between mid-rise buildings; pavement looks smooth and traffic is moderate. A silver van drives ahead in the ego lane, continuing through the corridor because the traffic light ahead shows green. In the adjacent right lane, a white box truck slightly ahead travels at a similar speed, keeping pace alongside and limiting an immediate lane change. Farther ahead in the opposite lane, an oncoming bus approaches the intersection without affecting the ego lane.", "hazard_reasoning": "There is a silver van driving in the ego lane, in front of the ego car, because the traffic light is green. The green light may end soon, and following the vehicle ahead helps maintain a safe distance and ensures proper response to any sudden signal change."}
{"id": "train_00563", "split": "train", "clip_key": "2020-0226-101332_067667_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "067667"}, "frames": ["2020-0226-101332_067667_movie_t-3.jpg", "2020-0226-101332_067667_movie_t-2.jpg", "2020-0226-101332_067667_movie_t-1.jpg", "2020-0226-101332_067667_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "A dense urban arterial with three same-direction lanes runs between tall buildings on dry, well-marked asphalt, and traffic is heavy and bunches at a signalized intersection. A silver van directly ahead in the ego lane is stopped with its brake light on because the traffic light ahead shows red. In the right lane a silver minivan inches forward alongside in the queue, remaining in its lane. On the left, a red taxi and a small silver car line up slightly behind and also creep ahead. The overhead traffic signal remains red, and no median or unusual obstacles are visible.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. Driver should stop promptly to avoid a collision with the stopped vehicle at the red light."}
{"id": "train_00564", "split": "train", "clip_key": "2020-0131-135401_072834_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "072834"}, "frames": ["2020-0131-135401_072834_movie_t-3.jpg", "2020-0131-135401_072834_movie_t-2.jpg", "2020-0131-135401_072834_movie_t-1.jpg", "2020-0131-135401_072834_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane arterial runs between mid-rise buildings, with smooth pavement and only same-direction lanes visible; traffic is heavy and forms a stopped queue. A black hatchback directly ahead in the ego lane is stationary because of a red traffic light ahead, holding the ego vehicle. To the right, a silver van in the adjacent lane is also stopped slightly ahead, pacing the queue alongside the ego car. Ahead-left, a small white car and a white box truck wait in their lanes, creeping forward with the line and contributing to the congestion. An overhead lane-use sign indicates three through lanes and a right-turn lane.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to avoid colliding with the halted vehicle and comply with the traffic signal."}
{"id": "train_00565", "split": "train", "clip_key": "2020-0218-103119_013328_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "013328"}, "frames": ["2020-0218-103119_013328_movie_t-3.jpg", "2020-0218-103119_013328_movie_t-2.jpg", "2020-0218-103119_013328_movie_t-1.jpg", "2020-0218-103119_013328_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial comes into view as the ego vehicle proceeds in the left lane on smooth, dry pavement. A striped gore on the right guides a branch, and traffic is light while approaching a signalized intersection ahead. A white van drives ahead in the ego lane at a steady pace, modestly constraining the ego car's speed. An oncoming red car travels in the right-side lanes in the opposite direction, continuing straight without interaction. Several pedestrians walk along the left sidewalk near a bus stop behind a guardrail.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane. The vehicle ahead may decelerate unexpectedly, so the driver should be prepared to adjust speed and maintain a safe following distance under this situation."}
{"id": "train_00566", "split": "train", "clip_key": "2020-0205-103411_093278_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "093278"}, "frames": ["2020-0205-103411_093278_movie_t-3.jpg", "2020-0205-103411_093278_movie_t-2.jpg", "2020-0205-103411_093278_movie_t-1.jpg", "2020-0205-103411_093278_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial has three lanes in the ego direction with a painted gore on the right; the pavement is dry and smooth, and traffic is moderate but slowing near the next junction. A white flatbed truck directly ahead in the ego lane slows because congestion builds in front, setting the pace. To the left, a small white van slightly ahead moves slowly in the adjacent lane, tracking the truck and potentially merging near the queue. Farther ahead, multiple vehicles queue across lanes and constrain flow. A van is parked at the right curb.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down in time to adapt to the reduced speed and maintain a safe following distance."}
{"id": "train_00567", "split": "train", "clip_key": "2020-0217-110854_031726_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "031726"}, "frames": ["2020-0217-110854_031726_movie_t-3.jpg", "2020-0217-110854_031726_movie_t-2.jpg", "2020-0217-110854_031726_movie_t-1.jpg", "2020-0217-110854_031726_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban multi-lane arterial carries traffic past tall buildings, with a raised concrete median separating opposite-direction lanes; the pavement is dry and smooth, and overall flow is heavy and slow. A red hatchback directly ahead in the ego lane slows because of congestion, setting the ego vehicle's pace. In the left-adjacent lane, a large box truck slightly ahead creeps forward and partially blocks the forward view. A white car on the far left travels parallel just beside and ahead, moving slowly in its lane with limited lateral clearance.", "hazard_reasoning": "There is a red hatchback, slowing, in front of the ego car, in the ego lane, because of traffic congestion ahead. The ego-vehicle should slow down to maintain a safe distance and adjust speed for the congestion."}
{"id": "train_00568", "split": "train", "clip_key": "2020-0204-150838_010136_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "010136"}, "frames": ["2020-0204-150838_010136_movie_t-3.jpg", "2020-0204-150838_010136_movie_t-2.jpg", "2020-0204-150838_010136_movie_t-1.jpg", "2020-0204-150838_010136_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes and a curbside sidewalk appears, the pavement is dry, and traffic is heavy with queues toward a signalized intersection. A black sedan directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle. In the adjacent right lane, a line of vans inches forward beside the ego, limiting opportunities to change lanes. On the left, pedestrians walk near the corner and linger by the crosswalk without stepping into the roadway. A circular 40 sign posts the speed limit, and the pedestrian signal shows a walk indication.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop now to avoid rear-end collision with the halted vehicle."}
{"id": "train_00569", "split": "train", "clip_key": "2020-0225-145150_026618_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "026618"}, "frames": ["2020-0225-145150_026618_movie_t-3.jpg", "2020-0225-145150_026618_movie_t-2.jpg", "2020-0225-145150_026618_movie_t-1.jpg", "2020-0225-145150_026618_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road carries light to moderate traffic on dry pavement, with a wide hatched median to the right separating oncoming lanes. A blue truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. A scooter travels ahead in the left curb lane, gradually pulling away while remaining in its lane. In the adjacent right lane, another blue truck moves slightly faster and could merge ahead after the median taper. No-parking signs are posted along the left sidewalk, and a white box truck is parked at the far right curb.", "hazard_reasoning": "There is a blue truck slowing in front of the ego car, in the ego lane. The driver should reduce speed now to maintain a safe following distance and avoid a rear-end collision under sudden braking."}
{"id": "train_00570", "split": "train", "clip_key": "titan_clip_1035_000288_movie", "source": {"subset": "titan", "scenario": "clip_1035", "frame": "000288"}, "frames": ["titan_clip_1035_000288_movie_t-3.jpg", "titan_clip_1035_000288_movie_t-2.jpg", "titan_clip_1035_000288_movie_t-1.jpg", "titan_clip_1035_000288_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban commercial street with block paving leads into a small unsignaled intersection; there are no marked lanes or median and traffic is light, with movement slowed by deliveries. A white box truck is parked along the left side at the intersection, occupying part of the approach and constricting the lane. Another white delivery truck waits at the right curb ahead, further narrowing the available width. A small truck proceeds slowly across the intersection ahead, briefly crossing the ego path. Several pedestrians walk through the intersection and one stands near the right edge of the roadway, potentially stepping into the lane; a blue pedestrian sign on the left marks the shared zone.", "hazard_reasoning": "There is a white truck parked on the left side of the intersection. The parked truck obstructs the driver's line of sight, so the driver should manoeuvre carefully around it to avoid hidden oncoming traffic or pedestrians."}
{"id": "train_00571", "split": "train", "clip_key": "2020-0220-151845_036409_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "036409"}, "frames": ["2020-0220-151845_036409_movie_t-3.jpg", "2020-0220-151845_036409_movie_t-2.jpg", "2020-0220-151845_036409_movie_t-1.jpg", "2020-0220-151845_036409_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban one-way road runs under an elevated expressway, with two lanes in the same direction, clear pavement, and moderate traffic. Ahead in the ego lane, a red truck with a tarped load drives away from the ego car, setting the pace. In the adjacent right lane, a small silver hatchback runs alongside slightly ahead, keeping a steady speed and limiting an immediate lane change. Farther ahead in the right lane, a white van continues straight past the truck, influencing the available gap in front. Pedestrians line the sidewalks behind railings and bicycles are parked at the curb.", "hazard_reasoning": "There is a red truck driving in the ego lane, away from the ego car. Following a vehicle that partially blocks the view increases the risk of encountering unexpected stops or obstacles; slowing down helps maintain a safe distance and improves reaction time under this situation."}
{"id": "train_00572", "split": "train", "clip_key": "2020-0207-151349_014378_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_014378_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_014378_movie_t-3_augB1.jpg", "2020-0207-151349_014378_movie_t-2_augB1.jpg", "2020-0207-151349_014378_movie_t-1_augB1.jpg", "2020-0207-151349_014378_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane road with smooth pavement carries heavy, stop-and-go traffic, and sunlight glare from ahead briefly reduces visibility. A white microvan directly ahead in the ego lane starts moving left into the adjacent left lane, constraining the ego car's pace as it changes over. To the right front, a large box truck in the neighboring lane is stopped and looms close, limiting the forward view. Along the far left, another freight truck is parallel and nearly stationary, narrowing the available space around the van. A low hedge lines the right edge of the roadway.", "hazard_reasoning": "There is a white van turning in the ego lane, to the left lane on the road ahead of the ego car. The van's lane change may unexpectedly obstruct your path, requiring you to follow the vehicle ahead."}
{"id": "train_00573", "split": "train", "clip_key": "2020-0129-144857_033157_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "033157"}, "frames": ["2020-0129-144857_033157_movie_t-3.jpg", "2020-0129-144857_033157_movie_t-2.jpg", "2020-0129-144857_033157_movie_t-1.jpg", "2020-0129-144857_033157_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs beneath an elevated structure, bordered by a right-side guardrail and mid-block buildings; the pavement is good and traffic is moderate but slowing. A black van directly ahead in the ego lane slows because of congestion ahead, constraining the ego vehicle. Farther ahead in the same lane, a box truck proceeds slowly under the viaduct, forming a short queue. A speed-limit sign stands on the left sidewalk near a dealership frontage. Overhead columns and the guardrail narrow the right edge.", "hazard_reasoning": "There is a black van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the slowing traffic."}
{"id": "train_00574", "split": "train", "clip_key": "titan_clip_1363_000306_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1363_000306_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1363_000306_movie_t-3_augB1.jpg", "titan_clip_1363_000306_movie_t-2_augB1.jpg", "titan_clip_1363_000306_movie_t-1_augB1.jpg", "titan_clip_1363_000306_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban two-way street with one lane in each direction and no median runs between midrise buildings; the asphalt is smooth, and traffic is light as the ego vehicle proceeds in the left lane. A small white truck travels ahead in the ego lane moving straight, modestly setting the pace. A pedestrian wearing a black shirt crosses ahead from the left toward the right near the middle of the road, moving across the ego lane. Another pedestrian waits at the left curb by the vending machines, standing close to the roadway without stepping out. A 30 speed-limit sign is posted on a pole to the left.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, crossing the street in the middle of the road, from the left side to the right side. The driver should yield to this pedestrian to avoid a collision."}
{"id": "train_00575", "split": "train", "clip_key": "2020-0131-135401_003852_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003852"}, "frames": ["2020-0131-135401_003852_movie_t-3.jpg", "2020-0131-135401_003852_movie_t-2.jpg", "2020-0131-135401_003852_movie_t-1.jpg", "2020-0131-135401_003852_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid rear-end collision with truck.", "environment_perception": "An urban two-lane road with one lane each direction and no median is narrow but well paved; the oncoming lane runs on the right, and overall traffic is light though the ego lane is blocked. A white truck is stopped directly ahead in the ego lane, holding the ego vehicle stationary. To the left, a cyclist proceeds away in a narrow side lane separated by a raised curb, remaining outside the travel lane. Farther ahead on the same side path, a pedestrian walks away without approaching the roadway. An overhead sign shows 40 as the speed limit. Bright sun from the upper right creates glare and deep shadows, with a guardrail along the right edge.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. You should stop to avoid a rear-end collision with this halted vehicle."}
{"id": "train_00576", "split": "train", "clip_key": "titan_clip_427_000312_movie", "source": {"subset": "titan", "scenario": "clip_427", "frame": "000312"}, "frames": ["titan_clip_427_000312_movie_t-3.jpg", "titan_clip_427_000312_movie_t-2.jpg", "titan_clip_427_000312_movie_t-1.jpg", "titan_clip_427_000312_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban two-way road without a median and with smooth pavement carries light traffic. A female pedestrian wearing jeans and a black T-shirt and carrying a black handbag crosses from left to right directly ahead in a marked crosswalk, moving through the ego lane and momentarily controlling the vehicle's pace. Other pedestrians remain on the sidewalks to the left and right and do not step into the roadway. A blue pedestrian crossing sign is posted on the right beside the crosswalk.", "hazard_reasoning": "There is a female pedestrian, wearing jeans, a black t-shirt and carrying a black handbag, crossing the street from left to right, in front of the ego-car, in a marked crosswalk. The driver should stop because a pedestrian is crossing directly in front of the vehicle."}
{"id": "train_00577", "split": "train", "clip_key": "2020-0203-114632_053657_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "053657"}, "frames": ["2020-0203-114632_053657_movie_t-3.jpg", "2020-0203-114632_053657_movie_t-2.jpg", "2020-0203-114632_053657_movie_t-1.jpg", "2020-0203-114632_053657_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with a single left-hand lane in the ego direction curves gently, with a chevron buffer and guardrail separating opposing traffic on the right; the pavement looks smooth and traffic is light. Ahead in the ego lane, a gray sedan is stopped for a red traffic light at the upcoming intersection, constraining the ego vehicle's pace. On the opposite carriageway to the right, a silver van approaches and passes by, remaining behind the divider and not affecting the ego path. Farther ahead near the junction, several vehicles queue, consistent with the red signal.", "hazard_reasoning": "There is a gray sedan stopped in the ego lane because of a red traffic light. The driver should slow down to maintain a safe following distance and avoid a collision with the halted vehicle."}
{"id": "train_00578", "split": "train", "clip_key": "titan_clip_619_000474_movie", "source": {"subset": "titan", "scenario": "clip_619", "frame": "000474"}, "frames": ["titan_clip_619_000474_movie_t-3.jpg", "titan_clip_619_000474_movie_t-2.jpg", "titan_clip_619_000474_movie_t-1.jpg", "titan_clip_619_000474_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian on the left", "environment_perception": "The ego vehicle moves along a narrow urban two-way street with no center line, smooth asphalt, and very light traffic between closely spaced buildings and shops. It proceeds straight in the left half of the roadway. On the left edge close to the camera, a man wearing a white shirt and black pants pushes a black suitcase and walks away from the ego car along the curb, slightly narrowing the usable lane. On the right side by a storefront, another pedestrian in dark clothing walks toward the camera at the edge of the road while remaining outside the path. Parked bicycles and potted plants line the curbs; no notable signals are visible.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, pushing a black suitcase, and walking away from the ego car, on the left side of the road. The pedestrian may step into the driving lane unexpectedly while maneuvering his suitcase, so the driver should yield."}
{"id": "train_00579", "split": "train", "clip_key": "titan_clip_1303_000570_movie", "source": {"subset": "titan", "scenario": "clip_1303", "frame": "000570"}, "frames": ["titan_clip_1303_000570_movie_t-3.jpg", "titan_clip_1303_000570_movie_t-2.jpg", "titan_clip_1303_000570_movie_t-1.jpg", "titan_clip_1303_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the unloading pedestrian", "environment_perception": "An urban commercial street with a single narrow lane curves right into a small junction, with no median and stone paving in good condition; traffic is light and slow. On the left beside the ego lane, a pedestrian wearing a black shirt stands next to a parked blue flatbed truck unloading boxes, remaining close to the roadway and potentially encroaching on the lane. Ahead in the junction, a white box truck moves left to right across the ego path, temporarily blocking progress. Farther ahead at the right curb, another white truck is stopped near the corner, positioned to enter the lane after the crossing. Short bollards line the right sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, standing on the left side of the road, because they are unloading their parked vehicle. The driver should carefully manoeuvre around the unloading pedestrian to avoid a collision and ensure safety."}
{"id": "train_00580", "split": "train", "clip_key": "2020-0131-135401_073786_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "073786"}, "frames": ["2020-0131-135401_073786_movie_t-3.jpg", "2020-0131-135401_073786_movie_t-2.jpg", "2020-0131-135401_073786_movie_t-1.jpg", "2020-0131-135401_073786_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial between tall buildings has three same-direction lanes on smooth pavement, and traffic is heavy and mostly stopped. Directly ahead, a black hatchback in the ego lane is stopped because congestion blocks the way, holding the ego vehicle. In the adjacent left lane ahead, a large white box truck stands nearly still and limits forward visibility as it queues. To the right, a silver van creeps forward in the next lane alongside, moving parallel to the ego path. An overhead blue sign displays lane-use arrows indicating a left turn lane, two through lanes, and a right turn lane.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, because of the traffic congestion ahead. You should stop to maintain a safe distance and avoid colliding with the halted vehicle."}
{"id": "train_00581", "split": "train", "clip_key": "titan_clip_613_000048_movie", "source": {"subset": "titan", "scenario": "clip_613", "frame": "000048"}, "frames": ["titan_clip_613_000048_movie_t-3.jpg", "titan_clip_613_000048_movie_t-2.jpg", "titan_clip_613_000048_movie_t-1.jpg", "titan_clip_613_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrians carefully", "environment_perception": "An urban alley with a single narrow lane and no divider runs between shops, brick-paved and smooth, with very light traffic. Five pedestrians are gathered on the left side near the ego vehicle, standing and talking at the curb and slightly in the lane, constraining the available path. Far ahead near the junction, a dark car waits across the end of the alley and inches forward, limiting the exit space. Storefronts line the right side close to the carriageway, and a small white object sits on the right edge, further narrowing the passage.", "hazard_reasoning": "There are five pedestrians talking in a group, standing at the left side of the road. The driver should manoeuvre around the pedestrians carefully because they may inadvertently step into the roadway."}
{"id": "train_00582", "split": "train", "clip_key": "titan_clip_867_000234_movie", "source": {"subset": "titan", "scenario": "clip_867", "frame": "000234"}, "frames": ["titan_clip_867_000234_movie_t-3.jpg", "titan_clip_867_000234_movie_t-2.jpg", "titan_clip_867_000234_movie_t-1.jpg", "titan_clip_867_000234_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with brick paving and a single shared lane has no visible divider and light vehicle presence; movement is slow as pedestrians dominate. Ahead in the middle, a pedestrian in all black walks leftward toward the ego vehicle while going around a large truck parked on the left, so he may enter the lane. Slightly right of center farther ahead, another pedestrian in a white shirt walks toward the camera along the lane, likely to pass close to the ego path. At the left edge by the truck, a man looking at his phone walks forward toward the near side and could encroach on the path. A box truck is stopped along the left curb, narrowing the roadway and masking sightlines.", "hazard_reasoning": "There is a pedestrian walking in the middle of the road, wearing all black, toward the left side of the road and the ego car, because he is walking around a parked truck. The pedestrian could unexpectedly step into the vehicle's path as he navigates around the obstruction, so the driver should slow down to maintain safety."}
{"id": "train_00583", "split": "train", "clip_key": "2020-0205-152530_051623_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "051623"}, "frames": ["2020-0205-152530_051623_movie_t-3.jpg", "2020-0205-152530_051623_movie_t-2.jpg", "2020-0205-152530_051623_movie_t-1.jpg", "2020-0205-152530_051623_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid a collision", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection on smooth, dry pavement, and traffic is moderate. A white flatbed truck directly ahead in the ego lane slows because of the red traffic light at the intersection, setting the pace for the ego vehicle. In the right-adjacent lane, a white van slightly ahead continues straight at a similar speed alongside. Farther ahead in the left-adjacent lane, a silver car decelerates toward the stop line while remaining in lane. Overhead blue direction boards span the roadway, and the traffic signal ahead shows red.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane, because of the red traffic light ahead at the intersection. Stop to avoid a collision with the slowing truck and comply with the red signal."}
{"id": "train_00584", "split": "train", "clip_key": "2020-0206-142535_044960_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "044960"}, "frames": ["2020-0206-142535_044960_movie_t-3.jpg", "2020-0206-142535_044960_movie_t-2.jpg", "2020-0206-142535_044960_movie_t-1.jpg", "2020-0206-142535_044960_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with oncoming lanes to the right and smooth pavement has heavy, slow traffic. A gray hatchback directly ahead in the ego lane is stopped because of a congestion queue ahead, holding the ego vehicle. Farther ahead in the same direction, a white van and several cars line up and creep forward, sustaining the backup. In the opposite lanes to the right, oncoming cars continue at a steady pace. Pedestrians stay on the sidewalks and do not approach the roadway.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver must stop to avoid colliding with the halted vehicle in the congested traffic."}
{"id": "train_00585", "split": "train", "clip_key": "2020-0212-102546_005845_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "005845"}, "frames": ["2020-0212-102546_005845_movie_t-3.jpg", "2020-0212-102546_005845_movie_t-2.jpg", "2020-0212-102546_005845_movie_t-1.jpg", "2020-0212-102546_005845_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "An urban multi-lane signalized intersection with smooth pavement and broad zebra markings lies ahead, with no median; traffic is moderate and moving under a green light. A white hatchback directly ahead proceeds straight, following a white van, and they set our pace. To the right, a black sedan turns left across the intersection in front of us and continues away. At the near-left crosswalk, several pedestrians begin to cross; a pedestrian wearing a pink coat walks left to right within the crosswalk and may enter our lane.", "hazard_reasoning": "There is a pedestrian wearing a pink coat, crossing the street at a pedestrian crossing, from the left side to the right side. The driver should yield to the pedestrian crossing ahead to avoid a collision and ensure pedestrian safety."}
{"id": "train_00586", "split": "train", "clip_key": "titan_clip_573_000252_movie", "source": {"subset": "titan", "scenario": "clip_573", "frame": "000252"}, "frames": ["titan_clip_573_000252_movie_t-3.jpg", "titan_clip_573_000252_movie_t-2.jpg", "titan_clip_573_000252_movie_t-1.jpg", "titan_clip_573_000252_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow two-way urban street with a single lane each way, no median, and smooth pavement shows light traffic as the road curves gently right between buildings. On the right curb in the oncoming side, a large green truck is parked, slightly narrowing the oncoming lane but not blocking the ego lane. Beside the left curb near the camera, a motorbike stands stationary by a storefront and stays out of the travel lane. Far ahead in the same direction, a white car proceeds through the bend and continues away. A parking sign is visible on the left; no active traffic signals are apparent and no other hazards appear.", "hazard_reasoning": "There is a brown truck parked in the ego lane on the left side of the road, because it is being unloaded. The parked truck blocks the driving path, so the driver should manoeuvre carefully around the truck."}
{"id": "train_00587", "split": "train", "clip_key": "titan_clip_935_000048_movie", "source": {"subset": "titan", "scenario": "clip_935", "frame": "000048"}, "frames": ["titan_clip_935_000048_movie_t-3.jpg", "titan_clip_935_000048_movie_t-2.jpg", "titan_clip_935_000048_movie_t-1.jpg", "titan_clip_935_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrians walking on left sidewalk", "environment_perception": "An urban residential street in Japan, a narrow two-way road without a center divider, has smooth pavement and light traffic. On the left edge just ahead, two pedestrians, one in a white shirt and one in a striped shirt, walk away from the ego vehicle along the shoulder, staying near the lane boundary and therefore relevant to the ego path. A white van is stopped at the right curb facing the camera, and several parked cars line the left-side parking bay, slightly narrowing the corridor but leaving the ego lane unobstructed.", "hazard_reasoning": "There are two pedestrians wearing a white and a striped shirt, walking on the left side of the road, away from the ego car. They might step into the lane unexpectedly, so the driver should be aware of their presence and maintain a safe distance."}
{"id": "train_00588", "split": "train", "clip_key": "titan_clip_721_000108_movie", "source": {"subset": "titan", "scenario": "clip_721", "frame": "000108"}, "frames": ["titan_clip_721_000108_movie_t-3.jpg", "titan_clip_721_000108_movie_t-2.jpg", "titan_clip_721_000108_movie_t-1.jpg", "titan_clip_721_000108_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the crossing pedestrian.", "environment_perception": "An urban signalized intersection with a single lane in each direction and no median comes into view; the pavement is clean and traffic is light. Ahead, two pedestrians use the zebra crossing from right to left across the ego lane, and the nearer one wears a blue shirt and a backpack, crossing away from the ego car and occupying the path. On the far side of the intersection, an oncoming black SUV in its right-side lane approaches and eases near the crosswalk without entering the ego lane. Overhead traffic lights and well-marked crosswalks are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, carrying a backpack, crossing the street at a pedestrian crossing, away from the ego car. Yielding is necessary because the pedestrian is within the crosswalk and may enter the vehicle's path if not given right of way."}
{"id": "train_00589", "split": "train", "clip_key": "2020-0205-152530_063451_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "063451"}, "frames": ["2020-0205-152530_063451_movie_t-3.jpg", "2020-0205-152530_063451_movie_t-2.jpg", "2020-0205-152530_063451_movie_t-1.jpg", "2020-0205-152530_063451_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway under elevated ramps has two same-direction lanes with a right-side shoulder, dry pavement, and a moderate, slow-moving flow. A gray box truck is directly ahead in the ego lane and slows, constraining the ego car's speed. To its left, a blue container truck slightly ahead continues steadily in the adjacent lane, occupying the potential passing path. Behind the container in that left lane, a small white pickup advances toward the trucks, keeping the adjacent lane busy. No signals or unusual signage are evident.", "hazard_reasoning": "There is a gray truck slowing down in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_00590", "split": "train", "clip_key": "2020-0214-145407_046118_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "046118"}, "frames": ["2020-0214-145407_046118_movie_t-3.jpg", "2020-0214-145407_046118_movie_t-2.jpg", "2020-0214-145407_046118_movie_t-1.jpg", "2020-0214-145407_046118_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane approach to a signalized intersection with wide crosswalks and smooth asphalt is shown, with moderate traffic as cross traffic flows while the ego approach is stopped. A black sedan directly ahead in the ego lane remains stationary at the stop line because the signal ahead is red, holding the ego vehicle. A dark car in the adjacent right lane waits alongside, also stopped for the light. Through the intersection ahead, several cars and a motorcycle pass from right to left on the green, and a bicyclist rides across in front of the stopped lane, occupying the crossing.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The black sedan is halted at the red signal, so the driver must stop to avoid a collision and obey the traffic light."}
{"id": "train_00591", "split": "train", "clip_key": "titan_clip_198_000546_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_198_000546_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_198_000546_movie_t-3_augB1.jpg", "titan_clip_198_000546_movie_t-2_augB1.jpg", "titan_clip_198_000546_movie_t-1_augB1.jpg", "titan_clip_198_000546_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of nearby pedestrians", "environment_perception": "An urban street with tall buildings lines both sides; the ego car proceeds along a narrow single-lane road with smooth pavement and no median, and traffic is light. A small white car ahead in the ego lane moves steadily forward at low speed, setting the pace. On the left side of the road, a tall pedestrian in a blue shirt walks away from the ego car near the lane edge, close to the parked truck and within the ego vehicle's forward path. A second pedestrian on the right sidewalk walks ahead parallel to traffic and remains near the curb. A large box truck is stopped along the left curb, jutting slightly into the lane and narrowing the passage, and a bicycle is parked by a pole on the right.", "hazard_reasoning": "There is a tall pedestrian wearing a blue shirt, walking on the left side of the road, away from the ego car. The pedestrian's close proximity to the travel lane could result in unexpected entry into the vehicle's path, so the driver should remain vigilant."}
{"id": "train_00592", "split": "train", "clip_key": "titan_clip_678_000450_movie", "source": {"subset": "titan", "scenario": "clip_678", "frame": "000450"}, "frames": ["titan_clip_678_000450_movie_t-3.jpg", "titan_clip_678_000450_movie_t-2.jpg", "titan_clip_678_000450_movie_t-1.jpg", "titan_clip_678_000450_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist.", "environment_perception": "An urban multi-lane arterial with two lanes in each direction and a painted center divider runs between mid-rise buildings; the dry asphalt looks smooth and traffic moves at a moderate pace. A cyclist in a red T-shirt with a backpack rides ahead near the curb in the ego lane, moving away in the same direction and occupying the lane because there is no separate cycling lane, placing the cyclist directly in the ego vehicle's path. A motor scooter further ahead in the same lane proceeds straight and briefly slows as it reaches vehicles ahead, constraining the ego vehicle's speed. In the adjacent right lane, cars travel parallel and pass the ego vehicle while continuing straight, and on the far side of the divider oncoming traffic flows steadily.", "hazard_reasoning": "There is a cyclist wearing a red t-shirt, carrying a backpack, cycling away from the ego car, in the ego-car lane, because there is no cycling lane. The cyclist occupies the travel lane and may collide with the ego vehicle, so the driver should carefully manoeuvre around them."}
{"id": "train_00593", "split": "train", "clip_key": "titan_clip_866_000294_movie", "source": {"subset": "titan", "scenario": "clip_866", "frame": "000294"}, "frames": ["titan_clip_866_000294_movie_t-3.jpg", "titan_clip_866_000294_movie_t-2.jpg", "titan_clip_866_000294_movie_t-1.jpg", "titan_clip_866_000294_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around cyclist carefully", "environment_perception": "An urban two-way street without a median, the ego vehicle proceeds in the left lane toward a zebra crosswalk at a small intersection; the pavement is smooth and traffic is light with no vehicles immediately ahead or oncoming. Ahead on the left edge of the lane, a cyclist wearing a white hat, white shirt, and white pants rides away from the ego along the curb, potentially constraining the approach to the crosswalk. On the near-left sidewalk by the crosswalk, a man walks parallel to the road close to the curb but remains on the sidewalk. Farther ahead on the right sidewalk, a person under an umbrella walks along the block. A side street opens to the right just beyond the crosswalk.", "hazard_reasoning": "There is a cyclist wearing a white hat, a white shirt, and white pants, cycling on the left side of the road, away from the ego car. The cyclist's path may intersect with the ego-vehicle as you approach the intersection, requiring a careful manoeuvre to avoid collision."}
{"id": "train_00594", "split": "train", "clip_key": "2020-0220-151845_047647_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "047647"}, "frames": ["2020-0220-151845_047647_movie_t-3.jpg", "2020-0220-151845_047647_movie_t-2.jpg", "2020-0220-151845_047647_movie_t-1.jpg", "2020-0220-151845_047647_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial under an elevated expressway has dry pavement and heavy, slow traffic; a fenced median separates oncoming flow on the far right. Directly ahead in the ego lane, a flatbed truck with a covered load slows with the queue and intermittently stops, constraining the ego because of congestion ahead. To the left, a line of passenger cars creeps forward alongside the ego vehicle, maintaining a close stagger. In the adjacent right lane, a small white van advances at the same slow pace just ahead of the ego, remaining in its lane. An overhead electronic sign displays Japanese text, and larger directional boards are visible farther ahead under the viaduct.", "hazard_reasoning": "There is a red truck slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. To avoid collision with the slower-moving truck and adapt to the congestion ahead, the driver should slow down promptly."}
{"id": "train_00595", "split": "train", "clip_key": "2020-0226-101332_078898_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "078898"}, "frames": ["2020-0226-101332_078898_movie_t-3.jpg", "2020-0226-101332_078898_movie_t-2.jpg", "2020-0226-101332_078898_movie_t-1.jpg", "2020-0226-101332_078898_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs between tall buildings with three same-direction lanes and a guardrail separating oncoming traffic to the right; the pavement is dry and traffic is moderate and steady. A black van directly ahead in the ego lane continues forward with the flow on a green signal, setting the immediate pace. To the right, a black taxi in the adjacent lane draws alongside and gradually pulls ahead, reducing lateral clearance. On the left, a white minivan slightly ahead proceeds in its lane at similar speed without signaling, remaining parallel to the ego vehicle. Farther ahead, additional vans and a truck maintain gaps as the streams approach an intersection.", "hazard_reasoning": "There is a black van driving in front of the ego car in the ego lane, because of the green traffic light. The green signal indicates the van will continue moving forward; you should follow the vehicle ahead to maintain a safe distance and smooth traffic flow."}
{"id": "train_00596", "split": "train", "clip_key": "2020-0127-132751_003517_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "003517"}, "frames": ["2020-0127-132751_003517_movie_t-3.jpg", "2020-0127-132751_003517_movie_t-2.jpg", "2020-0127-132751_003517_movie_t-1.jpg", "2020-0127-132751_003517_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist movement", "environment_perception": "In an urban area, the ego vehicle follows a narrow two-way road that curves right beside a long construction fence; the asphalt looks wet and there is no moving traffic ahead. On the right ahead, several pedestrians stand and walk along the guardrailed edge of the work zone at the curve, close to the roadway and near the ego path. No other road users are visible in the lane or oncoming. A red-bordered circular sign on a pole stands by the site, and another circular prohibition sign appears farther right. The construction and right-hand curve create a narrowed, partially blind approach.", "hazard_reasoning": "a cyclist wearing a yellow t-shirt with black pant is cycling away from the ego car because of the construction on the right. The cyclist may swerve or slow unpredictably near the barriers, so the driver should be aware to anticipate these movements."}
{"id": "train_00597", "split": "train", "clip_key": "2020-0221-115122_020733_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "020733"}, "frames": ["2020-0221-115122_020733_movie_t-3.jpg", "2020-0221-115122_020733_movie_t-2.jpg", "2020-0221-115122_020733_movie_t-1.jpg", "2020-0221-115122_020733_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs under an elevated expressway on three same-direction lanes with dry, smooth pavement, and traffic is heavy and slow. A white minivan directly ahead in the ego lane slows because of congestion ahead, constraining the ego vehicle's pace. A large white van in the adjacent right lane travels alongside and continues straight, temporarily blocking a rightward lane change. Farther ahead in the right lane, a dark van and other cars bunch up and brake, adding to the queue. An overhead gantry with lane signals is visible ahead.", "hazard_reasoning": "There is a white minivan slowing in the ego lane because of traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and avoid a collision with the slowing vehicle."}
{"id": "train_00598", "split": "train", "clip_key": "2020-0214-145407_046099_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "046099"}, "frames": ["2020-0214-145407_046099_movie_t-3.jpg", "2020-0214-145407_046099_movie_t-2.jpg", "2020-0214-145407_046099_movie_t-1.jpg", "2020-0214-145407_046099_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane signalized intersection with smooth pavement is shown, and traffic in the ego's direction is halted at a red light while cross traffic flows through. A black sedan directly ahead in the ego lane is stopped at the crosswalk because pedestrians are crossing, constraining the ego vehicle's movement. Several pedestrians on the left step onto and walk across the zebra crossing in front of the queue. A cyclist in the far side of the intersection rides across from right to left with the cross traffic, passing ahead of the stopped cars without entering the ego lane. The signal facing the ego lane is red.", "hazard_reasoning": "There is a black sedan stopped in the ego lane in front of the ego car, because pedestrians are crossing at the crosswalk. Stop to avoid colliding with the crossing pedestrians and maintain a safe following distance."}
{"id": "train_00599", "split": "train", "clip_key": "titan_clip_386_000396_movie", "source": {"subset": "titan", "scenario": "clip_386", "frame": "000396"}, "frames": ["titan_clip_386_000396_movie_t-3.jpg", "titan_clip_386_000396_movie_t-2.jpg", "titan_clip_386_000396_movie_t-1.jpg", "titan_clip_386_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian carefully", "environment_perception": "An urban commercial alley with a single narrow shared lane and no divider runs between storefronts; the paving is patchy and traffic is very light with no vehicles ahead. A pedestrian in a green dress on the right side walks away from the ego-vehicle carrying a handbag, close to the curb and parallel to our path. Two pedestrians farther ahead along the center-left walk away in the lane, occupying the path and constraining pace. Another pedestrian in dark clothing is ahead near the middle of the roadway walking toward us and could enter our line. No signals or posted speed signs are visible, and parked bicycles with a row of orange cones stand along the left edge.", "hazard_reasoning": "There is a pedestrian wearing a green dress, carrying a handbag, and walking, on the right side of the road, away from the ego-car. The pedestrian may unexpectedly step into the vehicle's path, so the driver should manoeuvre around them carefully."}
{"id": "train_00600", "split": "train", "clip_key": "2020-0204-150838_054006_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "054006"}, "frames": ["2020-0204-150838_054006_movie_t-3.jpg", "2020-0204-150838_054006_movie_t-2.jpg", "2020-0204-150838_054006_movie_t-1.jpg", "2020-0204-150838_054006_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Yield to crossing cyclist", "environment_perception": "An urban scene under elevated expressways shows a wide multi-lane intersection with marked crosswalks and smooth pavement; traffic is light and the ego vehicle approaches in the left-side lane. The roadway includes channelized islands with rails near the center. Ahead at the near crosswalk, a cyclist wearing red pants rides from left to right across the ego lane, steadily continuing through the intersection and occupying the path. Another cyclist slightly nearer from the left also crosses rightward in the same crosswalk, further constraining the ego's movement. Farther ahead in the intersection, a third cyclist traverses left to right across distant lanes and has little immediate impact. Overhead traffic signals are present at the junction.", "hazard_reasoning": "There is a cyclist wearing red pants and crossing the street, from the left side to the right side, ahead at the crosswalk in the intersection. The driver needs to yield because the cyclist is entering the vehicle's path at the intersection crosswalk."}
{"id": "train_00601", "split": "train", "clip_key": "titan_clip_268_000180_movie", "source": {"subset": "titan", "scenario": "clip_268", "frame": "000180"}, "frames": ["titan_clip_268_000180_movie_t-3.jpg", "titan_clip_268_000180_movie_t-2.jpg", "titan_clip_268_000180_movie_t-1.jpg", "titan_clip_268_000180_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist approaching on the right.", "environment_perception": "A narrow urban two-way street with no centerline runs between low-rise shops, the pavement dry and smooth and overall traffic light. The ego vehicle proceeds on the left as parked scooters and bicycles along both curbs constrict the lane. Ahead on the right side, a cyclist wearing a black T-shirt rides toward the ego car along the opposing side, likely to pass close due to the limited width. On the left near the curb, a pedestrian with a cart stacks boxes outside a shop and lingers at the edge of the roadway, reducing clearance. No signals or notable signs control the scene.", "hazard_reasoning": "There is a cyclist wearing a black T-shirt and cycling on the right side of the road, toward the ego car. The cyclist is moving toward the vehicle and may enter its path, so the driver should be aware of their trajectory."}
{"id": "train_00602", "split": "train", "clip_key": "titan_clip_334_000552_movie", "source": {"subset": "titan", "scenario": "clip_334", "frame": "000552"}, "frames": ["titan_clip_334_000552_movie_t-3.jpg", "titan_clip_334_000552_movie_t-2.jpg", "titan_clip_334_000552_movie_t-1.jpg", "titan_clip_334_000552_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van.", "environment_perception": "An urban commercial street with a single narrow lane in each direction and no median is shown; the patched pavement looks damp and traffic is light with no moving vehicles close ahead. On the left curb just ahead, a black van is parked with its rear door open as it is being unloaded, protruding slightly into the travel lane and narrowing the path. Immediately to the left of the camera, a white van is stopped along the curb, further constricting space. On the right, several pedestrians walk along the wide sidewalk, with one adult near the curb but remaining on the walkway. Farther ahead the road continues toward a shopping gate with scattered foot traffic.", "hazard_reasoning": "There is a black van parked on the left side of the road because it is being unloaded. The parked van partially obstructs the lane, reducing visibility and requiring careful navigation."}
{"id": "train_00603", "split": "train", "clip_key": "titan_clip_219_000324_movie", "source": {"subset": "titan", "scenario": "clip_219", "frame": "000324"}, "frames": ["titan_clip_219_000324_movie_t-3.jpg", "titan_clip_219_000324_movie_t-2.jpg", "titan_clip_219_000324_movie_t-1.jpg", "titan_clip_219_000324_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrians crossing ahead", "environment_perception": "An urban intersection with zebra crossings on a well-paved street has no divider and light traffic. Two short pedestrians carrying backpacks cross from the left to the right on the near crosswalk ahead, occupying the ego vehicle's path near the intersection. A man at the right foreground also walks leftward across the same crosswalk directly in front of the vehicle, further constraining its movement. Beyond the intersection a white van proceeds straight along the narrow street ahead in the same direction and continues away without affecting the ego. A parked sedan sits at the right curb by the corner, and several people walk along the sidewalks.", "hazard_reasoning": "There are two short pedestrians carrying backpacks, crossing the street near the intersection, from the left side to the right side. The driver should yield as these pedestrians are crossing ahead in the crosswalk and have the right of way."}
{"id": "train_00604", "split": "train", "clip_key": "2020-0214-102601_050969_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0214-102601_050969_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0214-102601_050969_movie_t-3_augB1.jpg", "2020-0214-102601_050969_movie_t-2_augB1.jpg", "2020-0214-102601_050969_movie_t-1_augB1.jpg", "2020-0214-102601_050969_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial runs beneath an elevated expressway; the ego car is in the rightmost lane beside a guardrail on dry, well-kept pavement, and traffic is heavy and stop and go. A blue hatchback directly ahead in the ego lane slows and inches forward because of congestion, controlling the ego vehicle's pace. In the adjacent lane to the left, a tarp-covered light truck slightly ahead crawls with the queue and stays parallel to the ego lane. Farther left, several white cars line up and move slowly, extending the jam ahead. A roadside 40 speed limit sign is visible on the left, and no pedestrians, cyclists, or other hazards appear.", "hazard_reasoning": "There is a blue hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down because the hatchback's unexpected deceleration due to congestion reduces safe following distance."}
{"id": "train_00605", "split": "train", "clip_key": "2020-0227-153144_018094_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "018094"}, "frames": ["2020-0227-153144_018094_movie_t-3.jpg", "2020-0227-153144_018094_movie_t-2.jpg", "2020-0227-153144_018094_movie_t-1.jpg", "2020-0227-153144_018094_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the slowing SUV ahead", "environment_perception": "A busy urban arterial with two lanes each way and a metal-railed median has smooth pavement and heavy, slow traffic approaching a signalized intersection. A black hatchback directly ahead in the ego lane slows sharply because a white box truck farther ahead is turning left at the intersection, briefly blocking the lane. A dark minivan slightly ahead in the adjacent right lane inches forward beside the ego car in the queue. Two cyclists ride along the left curb ahead in the same direction, close to the lane line as they pass the standing cars. Overhead traffic lights and dense roadside activity frame the junction.", "hazard_reasoning": "There is a black mid-SUV slowing in front of the ego-car, in the ego lane, because of the truck turning left ahead in the intersection. The driver should yield to the slowing SUV ahead to maintain safe following distance and avoid a rear-end collision."}
{"id": "train_00606", "split": "train", "clip_key": "2020-0220-151845_023882_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "023882"}, "frames": ["2020-0220-151845_023882_movie_t-3.jpg", "2020-0220-151845_023882_movie_t-2.jpg", "2020-0220-151845_023882_movie_t-1.jpg", "2020-0220-151845_023882_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial runs under an elevated expressway with three same-direction lanes and no median; the pavement is dry and traffic is heavy and stop-and-go. The ego vehicle is in the center lane. A black van stopped in the ego lane directly ahead blocks the path and controls the pace. To the left, a small light truck slightly ahead in the adjacent lane creeps forward alongside, keeping close to the divider and limiting room to maneuver. Ahead right, a red hatchback in the right lane moves past the queue at low speed. Near right, a silver kei car proceeds slowly parallel to the ego car.", "hazard_reasoning": "There is a black van stopped in the ego lane, in front of the ego car. The halted van poses a rear-end collision risk, so the driver should follow the warning to avoid impact."}
{"id": "train_00607", "split": "train", "clip_key": "titan_clip_793_000510_movie", "source": {"subset": "titan", "scenario": "clip_793", "frame": "000510"}, "frames": ["titan_clip_793_000510_movie_t-3.jpg", "titan_clip_793_000510_movie_t-2.jpg", "titan_clip_793_000510_movie_t-1.jpg", "titan_clip_793_000510_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre around the parked motorcycle", "environment_perception": "A narrow urban two-way street with buildings tight to the curbs is shown; the pavement is smooth with edge lines but no centerline, traffic is light, and the road curves slightly to the right ahead. On the right side near the curb, a white motorcycle is parked and a person stands beside it, partially narrowing the space near the ego vehicle's path. No moving vehicles appear ahead in the same direction or as oncoming traffic. A few orange cones and a utility pole line the right sidewalk near the parked bike but remain off the roadway.", "hazard_reasoning": "There is a white motorcycle parked on the right side of the road. As the vehicle approaches, the parked motorcycle reduces the available roadway width, requiring careful maneuvering to avoid collision."}
{"id": "train_00608", "split": "train", "clip_key": "titan_clip_33_000390_movie", "source": {"subset": "titan", "scenario": "clip_33", "frame": "000390"}, "frames": ["titan_clip_33_000390_movie_t-3.jpg", "titan_clip_33_000390_movie_t-2.jpg", "titan_clip_33_000390_movie_t-1.jpg", "titan_clip_33_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban narrow brick-paved street with a single shared lane passes between midrise buildings; the left curb is lined with stopped vehicles, and traffic is light and slow. A man in jeans and a black shirt walks away from the ego-vehicle in the middle of the road because a white van is parked along the left, and he occupies the ego path. Ahead on the right, a small group stands near the curb and one steps forward, potentially entering the lane. A white van and a pink delivery truck remain parked on the left, creating a pinch point that narrows clearance.", "hazard_reasoning": "There is a man dressed in jeans and a black shirt, walking in the middle of the road away from the ego-car because of the white van parked on the left side. The pedestrian's position in the lane due to the obstruction poses a collision risk if not avoided."}
{"id": "train_00609", "split": "train", "clip_key": "2020-0207-151349_039535_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "039535"}, "frames": ["2020-0207-151349_039535_movie_t-3.jpg", "2020-0207-151349_039535_movie_t-2.jpg", "2020-0207-151349_039535_movie_t-1.jpg", "2020-0207-151349_039535_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial under an elevated expressway carries multiple same-direction lanes on dry pavement, and traffic is heavy and mostly stopped. A white hatchback directly ahead in the ego lane remains stopped because congestion blocks the way, so it sets the pace. At the left curb just ahead, a small silver van stands with its door open and a person beside it, waiting near the lane and potentially merging into the ego path. In the adjacent right lane, several trucks and vans, including a covered flatbed, creep forward nose-to-tail, boxing in the ego vehicle and reducing lateral clearance.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, because of traffic congestion ahead. The halted vehicle indicates queued traffic, so the driver should stop immediately to avoid a rear-end collision.\\n"}
{"id": "train_00610", "split": "train", "clip_key": "2020-0227-104226_047670_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "047670"}, "frames": ["2020-0227-104226_047670_movie_t-3.jpg", "2020-0227-104226_047670_movie_t-2.jpg", "2020-0227-104226_047670_movie_t-1.jpg", "2020-0227-104226_047670_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with a single lane in each direction runs between buildings, divided by a yellow center line; the pavement looks smooth and traffic is light to moderate. Directly ahead in the ego lane, a white covered truck accelerates and pulls away, setting the pace before opening a gap. In the opposite lane to the right, a black sedan approaches and continues straight past as oncoming traffic. Farther ahead near the left curb, a small white truck appears stopped by the sidewalk, remaining outside the ego lane and only slightly narrowing the view.", "hazard_reasoning": "There is a white truck accelerating in the eg-car lane. You should accelerate to maintain a safe following distance as its change in speed can affect spacing."}
{"id": "train_00611", "split": "train", "clip_key": "titan_clip_1125_000372_movie", "source": {"subset": "titan", "scenario": "clip_1125", "frame": "000372"}, "frames": ["titan_clip_1125_000372_movie_t-3.jpg", "titan_clip_1125_000372_movie_t-2.jpg", "titan_clip_1125_000372_movie_t-1.jpg", "titan_clip_1125_000372_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban scene on a narrow two-way bridge with no centerline and dry pavement; traffic is light and there are no oncoming vehicles. A blue van is parked ahead on the left side of the road in the ego lane, standing still and partly blocking the way. On the right edge nearby, a worker pulls a low handcart with a box forward along the roadway, keeping close to the curb and may edge into the travel lane as the path narrows. Farther ahead, a pedestrian walks in the roadway toward the right side beyond the van, occupying the lane the ego vehicle will take after passing.", "hazard_reasoning": "There is a blue van parked on the left side of the road, in the ego lane. The parked van obstructs the travel lane, requiring careful manoeuvring to avoid collision."}
{"id": "train_00612", "split": "train", "clip_key": "titan_clip_213_000150_movie", "source": {"subset": "titan", "scenario": "clip_213", "frame": "000150"}, "frames": ["titan_clip_213_000150_movie_t-3.jpg", "titan_clip_213_000150_movie_t-2.jpg", "titan_clip_213_000150_movie_t-1.jpg", "titan_clip_213_000150_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street has one lane in each direction and no median; the ego travels in the left lane on smooth pavement, and traffic is light with a distant oncoming car. Very close on the right edge, a cyclist moves slowly along the curb in the same direction and may merge into the ego lane. Ahead on the right, a pedestrian in a blue shirt and black pants carrying a ladder walks from the storefront area toward the lane and may step into the ego path. On the left, a white wagon is parked in a marked bay, narrowing the available width as the ego approaches.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, carrying a ladder, and walking on the right side of the road, towards a lane. The pedestrian may step into the driving lane unexpectedly, so the driver should slow down to maintain control and avoid a collision."}
{"id": "train_00613", "split": "train", "clip_key": "titan_clip_1009_000282_movie", "source": {"subset": "titan", "scenario": "clip_1009", "frame": "000282"}, "frames": ["titan_clip_1009_000282_movie_t-3.jpg", "titan_clip_1009_000282_movie_t-2.jpg", "titan_clip_1009_000282_movie_t-1.jpg", "titan_clip_1009_000282_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial side street with a single narrow lane and sidewalks, no median or centerline, has clean asphalt and very light vehicular traffic. A pedestrian in a white shirt carrying a backpack crosses the lane from right to left directly ahead of the ego vehicle, doing so where no crosswalk is marked. Farther ahead, another pedestrian walks along the middle of the lane away from the camera, occupying the path and potentially slowing the vehicle. Several pedestrians stand close to the curb on the right near storefront signboards while others wait along the left sidewalk, creating a tight corridor but remaining out of the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, crossing the street in front of the ego car, from the right side to the left side, because there is no crosswalk. The driver should slow down to avoid collision with the pedestrian due to the lack of a designated crossing."}
{"id": "train_00614", "split": "train", "clip_key": "titan_clip_786_000078_movie", "source": {"subset": "titan", "scenario": "clip_786", "frame": "000078"}, "frames": ["titan_clip_786_000078_movie_t-3.jpg", "titan_clip_786_000078_movie_t-2.jpg", "titan_clip_786_000078_movie_t-1.jpg", "titan_clip_786_000078_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential street with a single narrow two-way lane and smooth asphalt comes into view, with light traffic and no median. The ego-vehicle proceeds along the left side as a row of large trucks stands along the right curb, constricting the roadway. Ahead on the left edge, a child in a pink shirt rides a bicycle away from the ego vehicle, keeping to the curb due to a woman walking on the adjacent sidewalk. The woman continues ahead on the left sidewalk in the same direction, while the parked trucks create a tight corridor along the right.", "hazard_reasoning": "There is a child wearing a pink shirt and cycling on the left side of a narrow lane away from the ego-car because of a woman walking on the sidewalk. The child cyclist may change direction abruptly, requiring the driver to slow down to maintain safety."}
{"id": "train_00615", "split": "train", "clip_key": "titan_clip_1015_000246_movie", "source": {"subset": "titan", "scenario": "clip_1015", "frame": "000246"}, "frames": ["titan_clip_1015_000246_movie_t-3.jpg", "titan_clip_1015_000246_movie_t-2.jpg", "titan_clip_1015_000246_movie_t-1.jpg", "titan_clip_1015_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down and yield to pedestrian", "environment_perception": "An urban shopping street with a single undivided lane passes between storefronts; the pavement is smooth and bollards separate the roadway from the sidewalks. Motor traffic is absent while pedestrian activity is heavy. Directly ahead of the ego vehicle, a man wearing brown shorts, a blue shirt, and white shoes crosses the lane from left to right, occupying the path and constraining the vehicle's pace. Farther ahead, several pedestrians move diagonally across the roadway near the center, with some continuing into the lane the ego is taking. On the right foreground, a backpacked person steps off the sidewalk and then pauses at the edge, positioned to enter the lane. No signals or posted speed signs are prominent.", "hazard_reasoning": "There is a man wearing brown shorts, a blue shirt, and white shoes, crossing the street, in front of the ego car. The pedestrian is entering the vehicle's path directly, so the driver should slow down to avoid a potential collision."}
{"id": "train_00616", "split": "train", "clip_key": "2020-0203-114632_003386_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "003386"}, "frames": ["2020-0203-114632_003386_movie_t-3.jpg", "2020-0203-114632_003386_movie_t-2.jpg", "2020-0203-114632_003386_movie_t-1.jpg", "2020-0203-114632_003386_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of incoming white sedan", "environment_perception": "An urban two-way street with one lane each direction and a narrow curbside bike lane runs between mid-rise buildings; there is no median, the pavement is dry and intact, and traffic is light with a steady opposing flow. A white box truck approaches in the oncoming right lane, continuing straight toward and past the ego vehicle and defining the opposing stream. A white sedan drives in the same oncoming right lane toward the ego car near the curb, closing distance but remaining in its lane. On the left sidewalk a person stands with a bicycle by the railing near a crosswalk, waiting and not entering the roadway.", "hazard_reasoning": "There is white sedan driving in incoming traffic towards the ego-car, in the right lane. The oncoming sedan could collide with the ego-vehicle if not noticed in time, so the driver should be aware of its presence."}
{"id": "train_00617", "split": "train", "clip_key": "2020-0225-102455_005881_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "005881"}, "frames": ["2020-0225-102455_005881_movie_t-3.jpg", "2020-0225-102455_005881_movie_t-2.jpg", "2020-0225-102455_005881_movie_t-1.jpg", "2020-0225-102455_005881_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs between mid-rise buildings with smooth pavement and painted double white lines at the right edge; traffic is heavy and largely stopped near an intersection ahead. A gray dump truck is directly ahead in the ego lane and stands still due to congestion, blocking the path. To the left, a black sedan and a white van wait slightly ahead in the adjacent same-direction lane, creeping forward with the queue and limiting lane-change options. On the right, a silver car in the next same-direction lane rolls slowly forward in parallel with the jam. Farther right near the curb, a larger box truck also proceeds slowly with the flow.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car in the ego lane because of traffic congestion. The driver should stop to maintain safe distance and avoid a collision given the stopped vehicle and limited visibility."}
{"id": "train_00618", "split": "train", "clip_key": "2020-0207-101955_107679_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "107679"}, "frames": ["2020-0207-101955_107679_movie_t-3.jpg", "2020-0207-101955_107679_movie_t-2.jpg", "2020-0207-101955_107679_movie_t-1.jpg", "2020-0207-101955_107679_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to maintain safe distance", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, with smooth pavement and heavy stop-and-go traffic in the same direction. A blue sedan is stopped directly ahead in the ego lane because congestion stacks up in front, constraining the ego car's pace. Farther ahead in the same lane a tall box truck remains stopped, forming part of the queue that blocks forward movement. To the right, a red hatchback and a white van in the adjacent lane advance slowly in parallel with brief gaps but no clear opening to change lanes. On the left, a small flatbed truck with a green-tarped load inches forward beside the ego lane and may edge over as space appears.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain safe distance and avoid a rear-end collision."}
{"id": "train_00619", "split": "train", "clip_key": "2020-0213-143552_056861_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "056861"}, "frames": ["2020-0213-143552_056861_movie_t-3.jpg", "2020-0213-143552_056861_movie_t-2.jpg", "2020-0213-143552_056861_movie_t-1.jpg", "2020-0213-143552_056861_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs alongside a shrub median with smooth asphalt, and traffic is light to moderate in the ego direction while separate oncoming lanes flow beyond the median. A large white box truck is directly ahead in the ego lane and proceeds slowly, setting the pace. A silver van in the left lane changes lanes into the ego lane ahead, merging toward the gap behind the truck. Vehicles on the far side of the median travel in the opposite direction without affecting the ego path.", "hazard_reasoning": "There is a silver van changing lanes from the left lane to the ego lane. This maneuver may intrude on the ego path and could cause a collision if the driver does not slow down."}
{"id": "train_00620", "split": "train", "clip_key": "titan_clip_824_000282_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_824_000282_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_824_000282_movie_t-3_augB1.jpg", "titan_clip_824_000282_movie_t-2_augB1.jpg", "titan_clip_824_000282_movie_t-1_augB1.jpg", "titan_clip_824_000282_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with green edge lanes and no center divider lies ahead; the pavement is smooth and vehicle traffic is light, with several cars parked along the right curb. A white hatchback on the right protrudes toward the lane and narrows the roadway. Two pedestrians ahead move from the right into the ego lane and walk away near the center, constraining the vehicle; one is a lady in a black dress carrying an umbrella who steps around the parked car and continues in the middle of the road. Another person stands near the left storefront at the curb and does not enter the lane. No signals or speed signs are prominent.", "hazard_reasoning": "There is a lady, wearing a black dress, carrying an umbrella, walking in the middle of the road, from the right side, because of the parked vehicle. The driver should carefully manoeuvre around the pedestrian to avoid collision due to the lane obstruction."}
{"id": "train_00621", "split": "train", "clip_key": "2020-0221-115122_003997_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "003997"}, "frames": ["2020-0221-115122_003997_movie_t-3.jpg", "2020-0221-115122_003997_movie_t-2.jpg", "2020-0221-115122_003997_movie_t-1.jpg", "2020-0221-115122_003997_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban boulevard with three lanes in the ego direction runs between tall buildings; the asphalt is smooth and a metal fence median on the right separates oncoming traffic. Flow is heavy and gradually slowing. A gray sedan directly ahead in the ego lane slows in the queue because of congestion, constraining the ego vehicle's speed. Farther ahead, a white van in the right-adjacent lane decelerates with the pack and keeps similar spacing to vehicles ahead. A black sedan draws alongside in the left lane at a comparable pace, occupying the adjacent gap and limiting room to merge. No signals or unusual signs are prominent, and there are no visible hazards besides the dense traffic.", "hazard_reasoning": "There is a gray sedan slowing in the go lane because of the traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_00622", "split": "train", "clip_key": "titan_clip_969_000468_movie", "source": {"subset": "titan", "scenario": "clip_969", "frame": "000468"}, "frames": ["titan_clip_969_000468_movie_t-3.jpg", "titan_clip_969_000468_movie_t-2.jpg", "titan_clip_969_000468_movie_t-1.jpg", "titan_clip_969_000468_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for the crossing pedestrian", "environment_perception": "An urban neighborhood scene shows a narrow undivided road climbing uphill past shops, with smooth pavement and no moving vehicles, so traffic is light. Ahead at the marked pedestrian crossing, a pedestrian wearing a green shirt and yellow pants crosses from left to right across the ego lane. On the right sidewalk just beyond the crosswalk, two pedestrians walk uphill away from the camera near a convenience store entrance but remain off the roadway. On the left near the covered stairwell, another person stands by the railing and does not approach the lane. A blue pedestrian-crossing sign is posted on the left.", "hazard_reasoning": "There is a pedestrian wearing a green shirt and yellow pants and crossing the street at a pedestrian crossing from the left to the right. The driver should stop to yield to the pedestrian at the marked crossing to avoid a collision."}
{"id": "train_00623", "split": "train", "clip_key": "2020-0207-101955_078264_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "078264"}, "frames": ["2020-0207-101955_078264_movie_t-3.jpg", "2020-0207-101955_078264_movie_t-2.jpg", "2020-0207-101955_078264_movie_t-1.jpg", "2020-0207-101955_078264_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes and a short merge taper on the right runs between guardrails and a sound barrier, with smooth pavement and light-to-moderate flow. A blue flatbed truck is directly ahead in the ego lane and slows because of traffic congestion, limiting the ego vehicle's speed. A white truck travels in the adjacent right lane slightly faster and passes by, remaining separate from the ego path. A speed limit 50 sign and a no-parking sign stand on the left side of the road.", "hazard_reasoning": "There is a blue truck slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and adjust to the reduced traffic flow."}
{"id": "train_00624", "split": "train", "clip_key": "2020-0225-102455_007623_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "007623"}, "frames": ["2020-0225-102455_007623_movie_t-3.jpg", "2020-0225-102455_007623_movie_t-2.jpg", "2020-0225-102455_007623_movie_t-1.jpg", "2020-0225-102455_007623_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial rises gently with two lanes in the ego direction and opposing lanes to the right, separated by a painted chevron median; the pavement is dry and traffic is moderate with a brief buildup ahead. A gray dump truck is ahead in the ego lane and slows, constrained by a queue of same-direction cars farther up the grade due to congestion. A line of passenger cars continues straight in the ego lanes, intermittently braking and setting the pace. Oncoming traffic to the right flows downhill steadily beyond the chevron island without interacting. Overhead blue guide signs assign lanes and list destinations, including left for Hanzomon, straight for Sendagaya, and right toward Hatsudai and Shinjuku Station.", "hazard_reasoning": "There is a gray truck is slowing in the ego lane, away from the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of the truck due to the buildup of traffic."}
{"id": "train_00625", "split": "train", "clip_key": "titan_clip_224_000492_movie", "source": {"subset": "titan", "scenario": "clip_224", "frame": "000492"}, "frames": ["titan_clip_224_000492_movie_t-3.jpg", "titan_clip_224_000492_movie_t-2.jpg", "titan_clip_224_000492_movie_t-1.jpg", "titan_clip_224_000492_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with a single mixed-traffic lane and brick paving is dry and in good condition, with light vehicle flow but many pedestrians; cones line the right sidewalk and a truck stands at the right curb, narrowing the lane. On the right side ahead, a pedestrian in a white T-shirt walks toward the ego car in the roadway because the cones block the sidewalk, and he may enter the ego path. Along the left edge ahead, a small group of pedestrians walks away in the same direction within the lane, limiting the ego vehicle's pace. Near the front right, a stopped box truck protrudes slightly into the lane beside the cones, leaving limited clearance.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt and walking toward the ego car, on the right side of the road, because of traffic cones blocking the sidewalk. The pedestrian may veer into the lane unexpectedly due to the sidewalk obstruction, so the driver should slow down to avoid a collision."}
{"id": "train_00626", "split": "train", "clip_key": "2020-0210-101957_040660_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "040660"}, "frames": ["2020-0210-101957_040660_movie_t-3.jpg", "2020-0210-101957_040660_movie_t-2.jpg", "2020-0210-101957_040660_movie_t-1.jpg", "2020-0210-101957_040660_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for the pedestrian at crosswalk", "environment_perception": "An urban two-way street with one lane per direction and a low shrub median appears, the asphalt smooth and dry, and overall traffic light with a few oncoming vehicles beyond the median. Ahead at the crosswalk, pedestrians move from the right curb to the left across the ego lane, including a woman in a black coat carrying a handbag who crosses steadily, keeping the ego vehicle stopped at the red signal. Another pedestrian already near the lane center continues leftward, still occupying the ego path. Oncoming cars on the far side of the median proceed through the junction without pausing and do not conflict. Overhead traffic lights show red for the ego approach, and a posted 40 sign is visible.", "hazard_reasoning": "There is a female pedestrian, wearing a black coat and carrying a handbag, crossing the street at the crosswalk, from the right to the left, because of a red traffic light. The driver needs to stop to yield to the pedestrian and avoid a collision."}
{"id": "train_00627", "split": "train", "clip_key": "2020-0205-103411_049358_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "049358"}, "frames": ["2020-0205-103411_049358_movie_t-3.jpg", "2020-0205-103411_049358_movie_t-2.jpg", "2020-0205-103411_049358_movie_t-1.jpg", "2020-0205-103411_049358_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with three same-direction lanes on dry asphalt and heavy traffic queuing toward an intersection beneath a pedestrian overpass. A black car directly ahead in the ego lane is stopped because the light ahead shows red, constraining the ego vehicle. To the left, a white sedan alongside inches forward within its lane and does not encroach on the ego path. In the right lane, a dark van just ahead remains stationary in the queue, limiting opportunities to change lanes. The traffic signal facing the queue is clearly red.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to maintain a safe distance and comply with the traffic signal to avoid a collision."}
{"id": "train_00628", "split": "train", "clip_key": "2020-0218-103119_057301_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "057301"}, "frames": ["2020-0218-103119_057301_movie_t-3.jpg", "2020-0218-103119_057301_movie_t-2.jpg", "2020-0218-103119_057301_movie_t-1.jpg", "2020-0218-103119_057301_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road under an elevated structure carries slow, moderate traffic; both lanes run in the same direction with a dashed divider, curb on the left, guardrail on the right, and smooth pavement. A white box truck ahead in the ego lane begins changing right in front of the ego car, moving into the adjacent lane and momentarily constraining the ego vehicle's pace. A white minibus in the right lane travels alongside slightly ahead, limiting the truck's merge space. Farther ahead in the right lane, a black SUV continues steadily.", "hazard_reasoning": "There is a white truck lane changing in front of the ego car, to the right lane. The truck's movement into the right lane ahead requires the driver to slow down to maintain a safe distance."}
{"id": "train_00629", "split": "train", "clip_key": "2020-0214-145407_030395_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "030395"}, "frames": ["2020-0214-145407_030395_movie_t-3.jpg", "2020-0214-145407_030395_movie_t-2.jpg", "2020-0214-145407_030395_movie_t-1.jpg", "2020-0214-145407_030395_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene shows a two-lane same-direction road running under an overpass, with a concrete wall on the right beside an elevated ramp; the pavement is smooth and traffic is heavy and slow. A silver sedan directly ahead in the ego lane slows and inches forward because congestion builds in front, holding the ego vehicle to the same pace. To the left, a queue of cars including a large white truck creeps alongside, limiting any lane change opportunities. On the adjacent ramp to the right, separate traffic moves steadily behind a barrier and does not interact.", "hazard_reasoning": "There is a silver sedan slowing in the ego lane, because there is traffic congestion ahead, in front of the ego car. The driver should slow down to maintain a safe following distance as traffic ahead is congested and speeds are reducing."}
{"id": "train_00630", "split": "train", "clip_key": "2020-0227-104226_077311_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "077311"}, "frames": ["2020-0227-104226_077311_movie_t-3.jpg", "2020-0227-104226_077311_movie_t-2.jpg", "2020-0227-104226_077311_movie_t-1.jpg", "2020-0227-104226_077311_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of road cones ahead", "environment_perception": "A quiet urban residential two-way street with left-hand traffic, one narrow lane per direction and no median, shows smooth pavement and light flow. The ego vehicle continues straight along the left lane. A black minivan ahead in the same lane travels steadily and keeps position, effectively setting the pace. No oncoming vehicles are visible in the near distance. Two orange traffic cones stand along the right side of the road ahead, close to the shoulder. A red car is parked off to the right behind a barrier, with guardrails and walls lining the narrow corridor.", "hazard_reasoning": "There are two traffic cones on the right side of the road. These cones may indicate upcoming construction or obstacles, requiring the driver to remain alert to avoid sudden maneuvers."}
{"id": "train_00631", "split": "train", "clip_key": "titan_clip_1257_000180_movie", "source": {"subset": "titan", "scenario": "clip_1257", "frame": "000180"}, "frames": ["titan_clip_1257_000180_movie_t-3.jpg", "titan_clip_1257_000180_movie_t-2.jpg", "titan_clip_1257_000180_movie_t-1.jpg", "titan_clip_1257_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "An urban residential scene unfolds on a very narrow two-way street with edge lines, no median, smooth pavement, and light traffic. Two pedestrians wearing blue pants walk toward the ego vehicle along the right edge, nearing the travel lane. A man stands on the right beside a vending machine at the building corner, lingering near the curb and close to the roadway where the ego passes. Far ahead near the center of the lane, a cyclist rides along the roadway in the same direction, setting the pace. A yellow car is parked on the left partially intruding into the lane, further tightening the corridor.", "hazard_reasoning": "There are two pedestrians wearing blue pants, walking on the right side of the road, towards the ego car. The driver should be aware of these pedestrians as they may enter the lane unexpectedly, especially on the upcoming curve with limited visibility."}
{"id": "train_00632", "split": "train", "clip_key": "2020-0220-102630_034544_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "034544"}, "frames": ["2020-0220-102630_034544_movie_t-3.jpg", "2020-0220-102630_034544_movie_t-2.jpg", "2020-0220-102630_034544_movie_t-1.jpg", "2020-0220-102630_034544_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows a single-lane left-side roadway curving gently right, divided from opposing traffic by a metal guardrail; the asphalt is dry and worn, with light flow in the ego lane and moderate oncoming flow. Ahead-left at a side street, a line of vans and cars waits near the corner, stationary and not entering the ego lane. To the right beyond the guardrail, several oncoming cars move alongside through the bend, separated from the ego path. A pedestrian walks along the right sidewalk beside the rail, well clear of the carriageway. Overhead directional boards and a keep-straight sign are visible ahead.", "hazard_reasoning": "No caption provided. The road is clear of obstacles, so the driver can proceed safely."}
{"id": "train_00633", "split": "train", "clip_key": "titan_clip_1325_000132_movie", "source": {"subset": "titan", "scenario": "clip_1325", "frame": "000132"}, "frames": ["titan_clip_1325_000132_movie_t-3.jpg", "titan_clip_1325_000132_movie_t-2.jpg", "titan_clip_1325_000132_movie_t-1.jpg", "titan_clip_1325_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian walking ahead", "environment_perception": "An urban back street with a single narrow undivided lane runs between tall buildings; the asphalt is dry and smooth with a manhole cover and no centerline, and traffic is light with no moving vehicles visible. Ahead on the left, a pedestrian wearing blue pants, a white shirt, and carrying a white bag walks away along the roadway edge, close to the ego vehicle's path. Parked cars sit recessed in bays on the right under a building, and a curbside pole narrows the shoulder. No traffic signals or notable signs are visible.", "hazard_reasoning": "There is a pedestrian wearing blue pants, a white shirt, and carrying a white bag, walking on the left side of the road, away from the ego car. The pedestrian's proximity to the driving lane and potential to change direction warrants caution to avoid a possible crossing hazard, so the driver should be aware."}
{"id": "train_00634", "split": "train", "clip_key": "titan_clip_1195_000342_movie", "source": {"subset": "titan", "scenario": "clip_1195", "frame": "000342"}, "frames": ["titan_clip_1195_000342_movie_t-3.jpg", "titan_clip_1195_000342_movie_t-2.jpg", "titan_clip_1195_000342_movie_t-1.jpg", "titan_clip_1195_000342_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the woman walking ahead", "environment_perception": "A narrow urban shopping street with a single shared lane is block-paved and bordered by storefronts, with no centerline and good pavement; motor traffic is light and slow. On the left side ahead, a woman in a white shirt and an orange skirt walks toward the ego car along the roadway because there is no sidewalk, and she may drift into the vehicle's path. On the right beside the shops near the camera, a worker slowly pulls a large turquoise handcart along the edge, tightening the available lane space. Farther ahead in the middle of the lane, another pedestrian walks away from the camera, occupying the path and limiting speed. Crates and signboards encroach slightly from the sides.", "hazard_reasoning": "A woman wearing a white shirt and an orange skirt is walking on the left side of the road toward the ego car because there is no sidewalk. The driver should be aware of her presence as she may step into the vehicle's path."}
{"id": "train_00635", "split": "train", "clip_key": "2020-0207-151349_022951_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "022951"}, "frames": ["2020-0207-151349_022951_movie_t-3.jpg", "2020-0207-151349_022951_movie_t-2.jpg", "2020-0207-151349_022951_movie_t-1.jpg", "2020-0207-151349_022951_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In a dense urban corridor, the ego vehicle travels on a multi-lane arterial with painted channelization and a raised median; the pavement is dry and traffic is moderate and flowing through a signalized intersection ahead. A white box truck directly ahead in the ego lane continues straight under a green light, setting the pace. In the adjacent lane to the right, a small covered truck accelerates forward alongside, remaining in its lane. Slightly ahead to the right, a silver car proceeds in its lane near the crosswalk at a similar speed. Pedestrians gather along the sidewalks behind railings, and no obstacles appear in the roadway.", "hazard_reasoning": "There is a white truck driving in front of the ego car in the ego lane, because of the green traffic light. The large truck blocks the driver's view of the road ahead, so the driver should follow the vehicle ahead to maintain a safe distance and avoid unseen hazards."}
{"id": "train_00636", "split": "train", "clip_key": "titan_clip_519_000138_movie", "source": {"subset": "titan", "scenario": "clip_519", "frame": "000138"}, "frames": ["titan_clip_519_000138_movie_t-3.jpg", "titan_clip_519_000138_movie_t-2.jpg", "titan_clip_519_000138_movie_t-1.jpg", "titan_clip_519_000138_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "The ego vehicle proceeds along a narrow two-way urban street lined with shops and apartments, with smooth pavement and light traffic. Ahead on the left, a pedestrian in a white shirt and white pants walks away along the curb, keeping to the roadside. Near the right edge, a woman in a black dress steps off the curb from beside a parked black sedan and crosses left across the roadway ahead of the path. The black sedan is stationary in a driveway on the right, its nose close to the street and slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and white pants, walking on the left side of the road, away from the ego car. The pedestrian could step into the lane, so the driver should manoeuvre carefully around them."}
{"id": "train_00637", "split": "train", "clip_key": "titan_clip_1266_000072_movie", "source": {"subset": "titan", "scenario": "clip_1266", "frame": "000072"}, "frames": ["titan_clip_1266_000072_movie_t-3.jpg", "titan_clip_1266_000072_movie_t-2.jpg", "titan_clip_1266_000072_movie_t-1.jpg", "titan_clip_1266_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for pedestrian walking on road.", "environment_perception": "A narrow urban residential street in Japan without a centerline curves gently left; the pavement is smooth and traffic is light with no oncoming or same-direction vehicles visible. A pedestrian in a black shirt and skirt walks away ahead along the right edge, using the roadway because there is no sidewalk, and her proximity to the lane constrains the ego vehicle while passing. No other road users are in motion. A parked bicycle at the right curb and a small sandwich board near the left curb encroach slightly, narrowing the passage. A blue parking sign on a utility pole is visible as the road bends.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and a skirt walking on the right side of the road, away from the ego car, because there is no sidewalk. The driver should slow down to avoid colliding with a pedestrian on the roadway."}
{"id": "train_00638", "split": "train", "clip_key": "2020-0210-101957_020777_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "020777"}, "frames": ["2020-0210-101957_020777_movie_t-3.jpg", "2020-0210-101957_020777_movie_t-2.jpg", "2020-0210-101957_020777_movie_t-1.jpg", "2020-0210-101957_020777_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with two lanes in the ego direction has smooth pavement and no visible median, and traffic moves at a moderate pace. In the leftmost ego lane ahead, a black scooter slows in front of the ego car, constraining its pace. Farther ahead in the same lane, a white box truck continues at a steady, slower speed, remaining in the scooter's path. In the adjacent right lane, a white SUV travels ahead in the same direction and remains in its lane without affecting the ego vehicle. On the left sidewalk at a crosswalk, a pedestrian stands at the curb and does not step into the roadway.", "hazard_reasoning": "There is a black scooter slowing in the ego lane, in front of the ego car. Because the scooter is slowing ahead of you, maintain a safe distance and reduce speed to avoid collision."}
{"id": "train_00639", "split": "train", "clip_key": "titan_clip_1061_000048_movie", "source": {"subset": "titan", "scenario": "clip_1061", "frame": "000048"}, "frames": ["titan_clip_1061_000048_movie_t-3.jpg", "titan_clip_1061_000048_movie_t-2.jpg", "titan_clip_1061_000048_movie_t-1.jpg", "titan_clip_1061_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way roadway and no median is shown, the pavement is worn and traffic is light. On the left side of the road, a pedestrian carrying a handbag, wearing a white shirt and beige pants, walks away from the ego car along the edge. Ahead in the same direction, a cyclist near the center-left pedals away steadily within the ego lane, constraining the ego vehicle's pace. Far ahead, a small white van approaches in the oncoming lane, creating a tight corridor past the cyclist. Storefront displays and signboards line both sides, encroaching slightly into the roadway and reducing usable width.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing a white shirt and beige pants, and walking on the left side of the road, away from the ego-car. The pedestrian could step into the driving lane unexpectedly, so slow down to avoid a collision."}
{"id": "train_00640", "split": "train", "clip_key": "titan_clip_1119_000450_movie", "source": {"subset": "titan", "scenario": "clip_1119", "frame": "000450"}, "frames": ["titan_clip_1119_000450_movie_t-3.jpg", "titan_clip_1119_000450_movie_t-2.jpg", "titan_clip_1119_000450_movie_t-1.jpg", "titan_clip_1119_000450_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban alley-like two-way road with no centerline runs between dense shopfronts; the pavement is dry and intact, and traffic is light with no moving vehicles ahead. On the left edge of the lane a pedestrian wearing a handbag and black pants walks away from the ego vehicle along the roadway, close enough that they may step into the ego lane. Just ahead, a white SUV is parked along the left curb, its position slightly intruding into the lane and reducing clearance. A second parked car continues this row on the left, further narrowing the available passage.", "hazard_reasoning": "There is a pedestrian wearing a handbag and black pants, walking on the left side of the lane, away from the ego car. The driver should slow down because the pedestrian is close to the travel lane and may unexpectedly enter the vehicle's path."}
{"id": "train_00641", "split": "train", "clip_key": "2020-0204-103442_063929_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "063929"}, "frames": ["2020-0204-103442_063929_movie_t-3.jpg", "2020-0204-103442_063929_movie_t-2.jpg", "2020-0204-103442_063929_movie_t-1.jpg", "2020-0204-103442_063929_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each direction runs between mid-rise buildings, with blue curbside lanes and smooth dry pavement; traffic is light. A black sedan ahead in the ego lane slows, so the ego vehicle follows at a modest pace. A car approaches in the oncoming lane to the right and continues past without affecting the ego path. A person stands on the left sidewalk behind a railing, remaining clear of the roadway. An overhead circular sign posts 40.", "hazard_reasoning": "There is a black sedan slowing in the ego lane. The sedan's reduction in speed ahead can require the driver to decelerate to maintain a safe following distance and avoid a collision."}
{"id": "train_00642", "split": "train", "clip_key": "2020-0204-150838_076961_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "076961"}, "frames": ["2020-0204-150838_076961_movie_t-3.jpg", "2020-0204-150838_076961_movie_t-2.jpg", "2020-0204-150838_076961_movie_t-1.jpg", "2020-0204-150838_076961_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway with two same-direction lanes runs under an elevated viaduct, bordered by guardrails and temporary construction fencing; the pavement is smooth and dry, and traffic is light to moderate with a slight slowdown ahead. A black tarp-covered truck directly ahead in the ego lane slows and briefly constrains the ego vehicle's pace. A white box truck ahead to the left continues straight in the adjacent lane at a similar speed without encroaching. A left-side on-ramp tapers into the roadway and the right shoulder is narrow with barriers, but no vehicles merge.", "hazard_reasoning": "There is a black truck slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The driver should heed this warning and reduce speed to maintain a safe following distance and avoid rear-end collision."}
{"id": "train_00643", "split": "train", "clip_key": "2020-0203-114632_075586_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "075586"}, "frames": ["2020-0203-114632_075586_movie_t-3.jpg", "2020-0203-114632_075586_movie_t-2.jpg", "2020-0203-114632_075586_movie_t-1.jpg", "2020-0203-114632_075586_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way road approaches a signalized intersection with no median and smooth pavement; traffic is moderate with steady opposing flow. A gray van directly ahead in the ego lane slows and begins a left turn at the intersection, constraining the ego vehicle's pace. In the adjacent right lane ahead, a silver van continues straight through the junction and remains clear of the ego lane. Oncoming trucks and vans move through the junction in the right-side lanes, passing the left-hand approach without conflict. A pedestrian waits on the left corner behind the guardrail near the crosswalk, remaining stationary. Overhead traffic lights and roadside signs are visible at the junction.", "hazard_reasoning": "There is a gray van in the ego lane, in front of the ego-car, that is slowing because it is making a left hand turn at the intersection. The van's deceleration may require the driver to brake unexpectedly to avoid a collision."}
{"id": "train_00644", "split": "train", "clip_key": "2020-0127-132751_013736_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0127-132751_013736_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0127-132751_013736_movie_t-3_augB1.jpg", "2020-0127-132751_013736_movie_t-2_augB1.jpg", "2020-0127-132751_013736_movie_t-1_augB1.jpg", "2020-0127-132751_013736_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway approaches an underpass with three lanes in the ego direction and a single oncoming lane to the right, no physical median, and slightly worn pavement; traffic is moderate to heavy and compresses near the tunnel. A black sedan ahead in the ego lane slows because of congestion ahead, reducing the ego car's pace. A large blue-and-white coach bus slightly farther ahead in the middle lane also decelerates as it nears the underpass, pacing traffic beside the ego lane. On the far left, a short queue led by a white van creeps near the curb. In the oncoming lane to the right, a silver mini-truck proceeds past without interaction.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to match the reduced speed of the sedan and maintain a safe following distance in the congested traffic."}
{"id": "train_00645", "split": "train", "clip_key": "2020-0225-145150_011454_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "011454"}, "frames": ["2020-0225-145150_011454_movie_t-3.jpg", "2020-0225-145150_011454_movie_t-2.jpg", "2020-0225-145150_011454_movie_t-1.jpg", "2020-0225-145150_011454_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban corridor lined with apartment blocks frames a multi-lane road with dry pavement and heavy, stop-and-go flow. A gray van directly ahead in the ego lane is stopped because congestion ahead blocks the lane, holding the ego car. To the right, a white van in the adjacent lane creeps forward past the ego vehicle but remains constrained by the same queue. Farther ahead, a box truck and several cars are lined up under the wires, maintaining the blockage that slows all movement.", "hazard_reasoning": "There is a gray van stopped in front of the ego car because of traffic congestion ahead. Stop to avoid colliding with the stopped vehicle due to sudden traffic build-up."}
{"id": "train_00646", "split": "train", "clip_key": "2020-0129-105040_060764_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "060764"}, "frames": ["2020-0129-105040_060764_movie_t-3.jpg", "2020-0129-105040_060764_movie_t-2.jpg", "2020-0129-105040_060764_movie_t-1.jpg", "2020-0129-105040_060764_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban shopping street with one lane each way and red-painted shoulders shows smooth pavement and light flow as the ego vehicle approaches a zebra crossing. A cyclist in a white shirt and black pants rides toward the ego car along the right side in the oncoming lane, tracking near the center and likely to pass close to the ego vehicle. Ahead on the right, a small van stands at the curb beside a person on a ladder, narrowing the opposing lane and constraining space for the cyclist and any oncoming traffic. Several pedestrians walk along both sidewalks near storefronts, moving parallel to traffic and not stepping into the road.", "hazard_reasoning": "There is a cyclist wearing a white shirt and black pants, cycling on the right side of the road, towards the ego car. The cyclist's path converges with the vehicle's lane, so the driver should carefully manoeuvre to avoid a collision while maintaining control."}
{"id": "train_00647", "split": "train", "clip_key": "2020-0212-102546_048694_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "048694"}, "frames": ["2020-0212-102546_048694_movie_t-3.jpg", "2020-0212-102546_048694_movie_t-2.jpg", "2020-0212-102546_048694_movie_t-1.jpg", "2020-0212-102546_048694_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with smooth pavement and a right-side merge area approaches a signalized intersection, and traffic is moderate but flows steadily. Ahead in the ego lane, a silver van accelerates away through the intersection under a green light, slightly setting the ego car's pace. In the oncoming lanes ahead, a yellow bus moves toward the junction, continuing straight and remaining separated by the center lines. On the right, a white van and a brown car in a side lane proceed slowly beside the chevroned merge area and may enter the ego lane after the intersection.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car, because of a green traffic light. Following the vehicle ahead helps maintain safe distance and ensures the driver navigates the green signal smoothly."}
{"id": "train_00648", "split": "train", "clip_key": "2020-0204-150838_042186_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "042186"}, "frames": ["2020-0204-150838_042186_movie_t-3.jpg", "2020-0204-150838_042186_movie_t-2.jpg", "2020-0204-150838_042186_movie_t-1.jpg", "2020-0204-150838_042186_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement and a right-side railing runs between high-rise buildings, and traffic flows at a moderate, steady pace. The ego travels with same-direction traffic in the center lane. A white van ahead in the ego lane drives away from the ego car, gradually pulling ahead and setting the immediate gap. In the adjacent left lane, another white mini-van slightly ahead travels parallel at a similar speed, remaining outside the ego path. Farther ahead in the left lane, a bus proceeds steadily and governs the pace of that lane. Overhead signal gantries are visible ahead without a salient change during the scene.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00649", "split": "train", "clip_key": "titan_clip_805_000564_movie", "source": {"subset": "titan", "scenario": "clip_805", "frame": "000564"}, "frames": ["titan_clip_805_000564_movie_t-3.jpg", "titan_clip_805_000564_movie_t-2.jpg", "titan_clip_805_000564_movie_t-1.jpg", "titan_clip_805_000564_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked hatchback", "environment_perception": "An urban two-way street with one narrow lane per direction and no median is shown, the pavement is clean and traffic is light. A blue hatchback is parked along the left curb in the ego lane, partly occupying the lane and constraining the path forward. Far ahead in the same direction, a small white van continues away through a slight right bend with no immediate interaction. On the right sidewalk, a person stands beside a bicycle near a pole, stationary close to the curb. The number 30 is painted large on the roadway indicating the posted speed.", "hazard_reasoning": "There is a blue hatchback parked on the left side of the road, in the ego lane. This parked vehicle partially blocks the driving lane and may require the driver to adjust trajectory to pass safely."}
{"id": "train_00650", "split": "train", "clip_key": "titan_clip_285_000564_movie", "source": {"subset": "titan", "scenario": "clip_285", "frame": "000564"}, "frames": ["titan_clip_285_000564_movie_t-3.jpg", "titan_clip_285_000564_movie_t-2.jpg", "titan_clip_285_000564_movie_t-1.jpg", "titan_clip_285_000564_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian.", "environment_perception": "A narrow urban two-way street runs straight between buildings, with one lane each direction, no median, and smooth pavement; traffic appears light with no moving vehicles nearby. On the left ahead, a pedestrian in a plaid shirt walks toward the ego car along the curb, close to the edge line and potentially nearing the ego lane. On the right roadside, a large white truck stands stopped facing the camera with several cones beside it, slightly encroaching on the oncoming lane and narrowing the street. No prominent signals or speed signs are visible, and sightlines ahead remain clear.", "hazard_reasoning": "There is a pedestrian wearing a plaid shirt, walking on the left side of the road, towards the ego car. The pedestrian is approaching your path and you should manoeuvre carefully to avoid collision with them."}
{"id": "train_00651", "split": "train", "clip_key": "titan_clip_689_000282_movie", "source": {"subset": "titan", "scenario": "clip_689", "frame": "000282"}, "frames": ["titan_clip_689_000282_movie_t-3.jpg", "titan_clip_689_000282_movie_t-2.jpg", "titan_clip_689_000282_movie_t-1.jpg", "titan_clip_689_000282_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow urban shopping street with smooth pavement and no center divider runs straight between storefronts, and no vehicles are visible ahead or oncoming. A pedestrian wearing a black shirt and black pants walks away from the camera in the middle of the roadway, occupying the travel lane and constraining the ego vehicle's path. On the right near a restaurant sign, another pedestrian moves along the curb at close range, near the lane and may step into it. Farther ahead by the left storefronts, a pedestrian proceeds along the edge parallel to traffic without entering the lane. Cones, crates, and advertising boards line both curbs but remain outside the travel way.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants, walking in the middle of the road, away from the ego car. Because they occupy the travel lane, the driver must yield to avoid a potential collision."}
{"id": "train_00652", "split": "train", "clip_key": "titan_clip_1174_000288_movie", "source": {"subset": "titan", "scenario": "clip_1174", "frame": "000288"}, "frames": ["titan_clip_1174_000288_movie_t-3.jpg", "titan_clip_1174_000288_movie_t-2.jpg", "titan_clip_1174_000288_movie_t-1.jpg", "titan_clip_1174_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban commercial street with no marked lanes and worn pavement runs between buildings, with construction hoarding on the left and traffic cones along the right; vehicle traffic is light and the ego car moves slowly through this shared space. A pedestrian wearing a white shirt and brown pants walks ahead along the left side within the ego lane away from the car, occupying the path because there is no sidewalk and constraining the pace. Farther ahead, several pedestrians in the roadway cross and continue along the center and could drift into the ego lane. Another pedestrian on the center-right walks toward the ego vehicle in the same narrow lane, further reducing clearance.", "hazard_reasoning": "There's a male pedestrian, wearing a white shirt, brown pants, and carrying a coat, walking on the left side of the road, in the ego lane, away from the ego car, because there's no sidewalk. The pedestrian's presence in the driving lane creates a collision risk, so the driver should carefully manoeuvre around him to maintain safety."}
{"id": "train_00653", "split": "train", "clip_key": "2020-0205-103411_038527_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "038527"}, "frames": ["2020-0205-103411_038527_movie_t-3.jpg", "2020-0205-103411_038527_movie_t-2.jpg", "2020-0205-103411_038527_movie_t-1.jpg", "2020-0205-103411_038527_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with a center guardrail curves gently right; the surface is dry and in good condition, and traffic is heavy with stop-and-go movement. Immediately ahead in the ego lane, a black hatchback is stopped because of congestion, holding the ego car. Farther ahead in the same lane, a white delivery van creeps forward in the queue, limiting progress. To the left of the ego lane, several cars including taxis roll slowly alongside, advancing slightly faster than the queue. Across the guardrail on the right, a few oncoming vehicles continue through the opposite carriageway with more space. Bright sun glare enters from the upper right but no unusual signage or obstacles appear.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The hatchback's sudden stoppage due to congestion requires the driver to stop promptly to avoid a rear-end collision under these conditions."}
{"id": "train_00654", "split": "train", "clip_key": "titan_clip_793_000138_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_793_000138_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_793_000138_movie_t-3_augB1.jpg", "titan_clip_793_000138_movie_t-2_augB1.jpg", "titan_clip_793_000138_movie_t-1_augB1.jpg", "titan_clip_793_000138_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian in road", "environment_perception": "An urban residential street extends ahead, a narrow two-way road with edge lines but no center divider, smooth pavement, and essentially no traffic. The ego vehicle continues straight in the left lane with clear space and no oncoming vehicles nearby. No pedestrians or cyclists are visible in the roadway; although described as a pedestrian in a black T-shirt walking a dog in the middle due to construction on the left, neither the person, dog, nor any construction activity appears in view. No traffic signals or speed signs are seen, and there are no parked vehicles or obstacles encroaching on the lane.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, walking a dog in the middle of the road, away from the ego car, because of construction on the left side. The pedestrian's position in the roadway creates a potential collision risk, so the driver should exercise caution as they approach."}
{"id": "train_00655", "split": "train", "clip_key": "titan_clip_1209_000390_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1209_000390_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1209_000390_movie_t-3_augB1.jpg", "titan_clip_1209_000390_movie_t-2_augB1.jpg", "titan_clip_1209_000390_movie_t-1_augB1.jpg", "titan_clip_1209_000390_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with narrow two-way traffic and paver blocks is shown; the roadway has no median, the surface looks good, and overall flow is light and slow. Ahead in the center of the lane, a pedestrian wearing an orange shirt and carrying a backpack walks away from the ego vehicle along the middle of the road, occupying the ego path. On the right side, an oncoming blue truck approaches slowly in its lane, limiting the available space to pass. Along the left curb near the camera, a white flatbed truck with a yellow tarp is parked and intrudes slightly into the lane, further narrowing the corridor. Farther ahead, a few pedestrians cross the roadway from right to left, and vehicles proceed cautiously.", "hazard_reasoning": "There is a pedestrian wearing an orange shirt, carrying a backpack, walking in the middle of the road, away from the ego car. This pedestrian poses a collision risk due to being on the roadway with limited visibility, so the driver should reduce speed to avoid an accident."}
{"id": "train_00656", "split": "train", "clip_key": "titan_clip_1313_000390_movie", "source": {"subset": "titan", "scenario": "clip_1313", "frame": "000390"}, "frames": ["titan_clip_1313_000390_movie_t-3.jpg", "titan_clip_1313_000390_movie_t-2.jpg", "titan_clip_1313_000390_movie_t-1.jpg", "titan_clip_1313_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single lane and no median curves gently right between close buildings; pavement is smooth and traffic is light. A white van ahead in the ego lane proceeds slowly toward the bend, setting the pace. On the right side, two men wearing white shirts walk in a small group away from the ego vehicle because a parked car occupies the curb, keeping close to the roadway and near the ego path. Additional pedestrians accompany them but remain at the edge. A dark car is parked on the right, narrowing the lane and creating a mild squeeze point.", "hazard_reasoning": "There are two men wearing white shirts and walking in a group, on the right side of the road, away from the ego car, because of the parked vehicle. These pedestrians may step into the roadway to bypass the parked vehicle, requiring the driver to slow down to ensure safety."}
{"id": "train_00657", "split": "train", "clip_key": "titan_clip_449_000576_movie", "source": {"subset": "titan", "scenario": "clip_449", "frame": "000576"}, "frames": ["titan_clip_449_000576_movie_t-3.jpg", "titan_clip_449_000576_movie_t-2.jpg", "titan_clip_449_000576_movie_t-1.jpg", "titan_clip_449_000576_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop for crossing cyclist", "environment_perception": "An urban intersection scene shows the ego vehicle paused at a single-lane side street with a zebra crosswalk joining a two-way arterial; pavement is clean and dry, and cross-street flow is moderate. A cyclist wearing a gray T-shirt, black pants, and a bag rides from right to left across the crosswalk directly ahead, briefly blocking the ego path. On the arterial beyond, cross traffic passes in both directions, including a white van and other cars moving through the junction and influencing available gaps. A blue pedestrian crossing sign stands on the left sidewalk at the crosswalk.", "hazard_reasoning": "There is a cyclist wearing a gray t-shirt, black pants, and carrying a bag, crossing the street at the pedestrian crosswalk, from the right side to the left side. Drivers must stop because the cyclist is moving across the lane and poses a collision risk if not given right of way."}
{"id": "train_00658", "split": "train", "clip_key": "titan_clip_303_000816_movie", "source": {"subset": "titan", "scenario": "clip_303", "frame": "000816"}, "frames": ["titan_clip_303_000816_movie_t-3.jpg", "titan_clip_303_000816_movie_t-2.jpg", "titan_clip_303_000816_movie_t-1.jpg", "titan_clip_303_000816_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of parked truck and pedestrian", "environment_perception": "A narrow urban two-way road with a single lane each direction and no median has smooth pavement and light flow, with no oncoming traffic. Ahead on the left, a white truck is parked for unloading, taking part of the ego lane. At its open rear, a worker handles goods and stands near the roadway, which may encroach on the ego vehicle's path. Very near at the left curb, a white car is stopped, further narrowing the approach. A portable no-parking sign stands on the right sidewalk, and bicycles and a handcart sit beside the truck as additional roadside obstacles.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. The parked truck and nearby pedestrian may obstruct the lane or step into traffic unexpectedly, so the driver should be cautious of them."}
{"id": "train_00659", "split": "train", "clip_key": "2020-0213-143552_069140_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "069140"}, "frames": ["2020-0213-143552_069140_movie_t-3.jpg", "2020-0213-143552_069140_movie_t-2.jpg", "2020-0213-143552_069140_movie_t-1.jpg", "2020-0213-143552_069140_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain a safe following distance.", "environment_perception": "An urban multi-lane road runs beneath an overpass, the pavement dry and mostly smooth, and traffic is light to moderate as vehicles approach a wide signalized junction. Ahead in the ego lane, a white box truck slows and moves left to merge into the left lane, briefly setting the pace. To the right, a green dump truck advances in the adjacent same-direction lane near the ego vehicle, holding a parallel position. Farther ahead to the left, a small dark car proceeds straight through the intersection within its lane and remains clear of the ego path. An overhead signal gantry and strong sun glare are visible.", "hazard_reasoning": "There is a white truck slowing down in the ego lane because it is merging into the left lane. The truck's merging maneuver reduces its speed and may cross your path, so slow down to maintain a safe following distance."}
{"id": "train_00660", "split": "train", "clip_key": "2020-0228-102841_020565_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "020565"}, "frames": ["2020-0228-102841_020565_movie_t-3.jpg", "2020-0228-102841_020565_movie_t-2.jpg", "2020-0228-102841_020565_movie_t-1.jpg", "2020-0228-102841_020565_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban multi-lane two-way intersection with left-side driving has no median and smooth dry pavement; traffic is light and vehicles pause at the stop line. Ahead in the ego lane, a black motorcycle is stopped directly in front of the car because the light is red, holding the ego position. A pedestrian crosses the zebra crossing from right to left in front of the motorcycle at a brisk walk, briefly occupying the ego path. To the left front beside the ego vehicle, a marked police car stands near the curb at the intersection, stationary and not entering the lane. Sparse opposing traffic is visible to the right beyond the junction.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego car in the ego lane, because the light is red. Stop to avoid colliding with the stationary motorcycle at the red signal."}
{"id": "train_00661", "split": "train", "clip_key": "titan_clip_751_000288_movie", "source": {"subset": "titan", "scenario": "clip_751", "frame": "000288"}, "frames": ["titan_clip_751_000288_movie_t-3.jpg", "titan_clip_751_000288_movie_t-2.jpg", "titan_clip_751_000288_movie_t-1.jpg", "titan_clip_751_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "An urban shopping street with a narrow two-way carriageway has no marked lanes or median; the asphalt looks smooth and traffic is very light with only pedestrians present. Ahead on the right, a man in a coat walks along the roadway since there is no sidewalk, moving in the same direction and narrowing the available path. Slightly ahead on the left, a woman with an umbrella walks near the edge in the same direction and may drift toward the travel line. Farther ahead near the center, another pedestrian proceeds away from the vehicle along the middle of the road, constraining speed. Bicycles and shop items are parked along the right margin and intrude slightly into the carriageway.", "hazard_reasoning": "A man wearing a coat walking on the right side of the road in front of the ego car, because there is no sidewalk. The pedestrian may step into the vehicle's path unexpectedly, so the driver should maintain awareness and adjust speed accordingly."}
{"id": "train_00662", "split": "train", "clip_key": "titan_clip_602_000018_movie", "source": {"subset": "titan", "scenario": "clip_602", "frame": "000018"}, "frames": ["titan_clip_602_000018_movie_t-3.jpg", "titan_clip_602_000018_movie_t-2.jpg", "titan_clip_602_000018_movie_t-1.jpg", "titan_clip_602_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with no centerline and smooth pavement runs straight between dense shopfronts, and traffic is light with no moving vehicles. Cones and small barricades line the left verge while more cones stand by a storefront on the right, slightly narrowing the usable lane. Ahead on the right side of the road, a pedestrian wearing black pants and a black shirt walks away from the ego car along the edge and could step into the travel path. Several bicycles are parked along the right curb and remain stationary. A yellow school-zone warning sign and a roadside convex mirror are clearly visible.", "hazard_reasoning": "There's a pedestrian wearing black pants, wearing a black shirt, walking on the right side of the road, away from the ego car. The driver should slow down because the pedestrian may unexpectedly enter the lane, requiring extra reaction time."}
{"id": "train_00663", "split": "train", "clip_key": "titan_clip_154_000204_movie", "source": {"subset": "titan", "scenario": "clip_154", "frame": "000204"}, "frames": ["titan_clip_154_000204_movie_t-3.jpg", "titan_clip_154_000204_movie_t-2.jpg", "titan_clip_154_000204_movie_t-1.jpg", "titan_clip_154_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "A narrow urban alley with a single shared lane runs between tall buildings, the pavement smooth and undivided, and traffic is very light with no vehicles present. Yellow bollards linked by chain line the raised left curb, narrowing usable space. A pedestrian wearing a cap and backpack walks ahead on the right side away from the ego-car, occupying part of the lane and constraining the approach. Farther ahead near the center, another pedestrian walks in the same direction and stays in the vehicle's path. A third person is visible even farther ahead toward the left side, also moving away along the roadway. No salient traffic signals or posted speeds are seen.", "hazard_reasoning": "There is a pedestrian wearing a cap, carrying a backpack, and walking, on the right side of the road, away from the ego-car. The driver should carefully manoeuvre around the pedestrian due to the narrow lane and pedestrian proximity."}
{"id": "train_00664", "split": "train", "clip_key": "titan_clip_853_000186_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_853_000186_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_853_000186_movie_t-3_augB1.jpg", "titan_clip_853_000186_movie_t-2_augB1.jpg", "titan_clip_853_000186_movie_t-1_augB1.jpg", "titan_clip_853_000186_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow single-lane, stone-paved roadway and no centerline is lined by shops and bollards, and traffic is light. The surface appears smooth as the scene approaches a small open area ahead. A pedestrian wearing a white T-shirt, carrying an umbrella and a handbag, crosses from the right to the left ahead of the ego car to reach the sidewalk, stepping through the ego lane. A cyclist farther ahead near the right edge rides in the same direction along the lane and continues straight within the ego path. Two pedestrians on the left walk near the curb and then continue along the sidewalk, staying clear of the roadway.", "hazard_reasoning": "A pedestrian wearing a white t-shirt, carrying an umbrella and a handbag, crosses the street from the right side of the road to the left, towards the ego car to get to the sidewalk. The driver should slow down because the pedestrian is entering the vehicle's path and may step out unexpectedly."}
{"id": "train_00665", "split": "train", "clip_key": "2020-0210-101957_066662_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "066662"}, "frames": ["2020-0210-101957_066662_movie_t-3.jpg", "2020-0210-101957_066662_movie_t-2.jpg", "2020-0210-101957_066662_movie_t-1.jpg", "2020-0210-101957_066662_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop due to traffic congestion ahead", "environment_perception": "An urban multi-lane road with two same-direction lanes and no physical median runs between apartments and trees; the pavement looks clean and traffic is heavy and slow. Directly ahead in the left lane, a white van is stopped because traffic is queued in front, blocking the ego car. In the adjacent right lane, a black sedan and a white hatchback creep forward in a line, moving slowly alongside and constraining the ego vehicle's pace. No oncoming traffic is visible. An overhead blue guide sign points toward Asaka and indicates a T-junction ahead.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a collision and respond safely to the slowed traffic."}
{"id": "train_00666", "split": "train", "clip_key": "2020-0220-102630_085821_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "085821"}, "frames": ["2020-0220-102630_085821_movie_t-3.jpg", "2020-0220-102630_085821_movie_t-2.jpg", "2020-0220-102630_085821_movie_t-1.jpg", "2020-0220-102630_085821_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial has two lanes in the ego direction and a metal median barrier; pavement looks good and traffic is moderate, with a right-side taper marked by chevrons. Directly ahead, a white van in the ego lane pulls away as the flow restarts, opening a gap to our front. In the adjacent left lane, a black hatchback slightly ahead continues straight at a steady pace, occupying that lane and limiting an immediate left merge. Farther ahead in the left lane, a box truck moves more slowly, constraining the pace of vehicles following it. On the opposite side of the barrier, several trucks approach as oncoming traffic, separated and not interacting.", "hazard_reasoning": "There is a white van is driving off in the ego lane, away from the go car, because the traffic ahead has stared moving. Driver should start moving now to keep pace and avoid blocking traffic."}
{"id": "train_00667", "split": "train", "clip_key": "2020-0207-101955_007873_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "007873"}, "frames": ["2020-0207-101955_007873_movie_t-3.jpg", "2020-0207-101955_007873_movie_t-2.jpg", "2020-0207-101955_007873_movie_t-1.jpg", "2020-0207-101955_007873_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban divided arterial with a planted median and smooth pavement has traffic queued and mostly stopped at a signal. A black van directly ahead in the ego lane is stationary because the light ahead is red, blocking the ego vehicle. Farther ahead in the same lane, a light-colored truck is also stopped, extending the queue and keeping the pace halted. At the curbside bay on the left, a silver box truck stands still by the sidewalk and remains out of the through lane. Overhead blue guide signs point to Kitashinjuku on Route 305 to the left and Iidabashi on Route 302 to the right.", "hazard_reasoning": "There is a black van stopped in the ego lane because of a red traffic light ahead. The driver should stop to avoid colliding with the halted van at the intersection."}
{"id": "train_00668", "split": "train", "clip_key": "2020-0203-114632_002173_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "002173"}, "frames": ["2020-0203-114632_002173_movie_t-3.jpg", "2020-0203-114632_002173_movie_t-2.jpg", "2020-0203-114632_002173_movie_t-1.jpg", "2020-0203-114632_002173_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the green truck", "environment_perception": "The scene is a dense urban shopping street with one lane in each direction, only painted lines dividing the smooth greenish pavement, and light, steady traffic. On the right, a green truck approaches in the oncoming lane toward the ego vehicle, keeping to its side near the centerline. Far ahead in the ego lane, a small white car travels away at moderate speed, loosely setting the pace. Along the right curb of the oncoming side, a white van is stopped beside a storefront, narrowing that lane but not affecting the ego path. Pedestrians walk along both sidewalks behind metal railings.", "hazard_reasoning": "There is a green truck driving in the right lane, towards the ego car. The truck's proximity in the adjacent lane may lead to a cut-in or require sudden maneuver, so you should stay vigilant."}
{"id": "train_00669", "split": "train", "clip_key": "2020-0210-101957_047357_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_047357_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_047357_movie_t-3_augB1.jpg", "2020-0210-101957_047357_movie_t-2_augB1.jpg", "2020-0210-101957_047357_movie_t-1_augB1.jpg", "2020-0210-101957_047357_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial shows smooth pavement with painted dividers, and traffic flows heavily in a slow, stop-and-go queue. A black sedan directly ahead in the ego lane slows because congestion builds in front, constraining the ego car's pace. To the left, a white delivery van slightly ahead in the adjacent lane inches forward with the line, remaining close to the ego path. On the right, a large box truck in the neighboring lane crawls alongside, partly blocking right-side visibility and keeping lateral space tight.", "hazard_reasoning": "There is a black sedan slowing down in the front of the ego-car, in the ego lane, because of traffic congestion ahead. Slow down to maintain a safe distance and prevent a collision under congested conditions."}
{"id": "train_00670", "split": "train", "clip_key": "titan_clip_397_000510_movie", "source": {"subset": "titan", "scenario": "clip_397", "frame": "000510"}, "frames": ["titan_clip_397_000510_movie_t-3.jpg", "titan_clip_397_000510_movie_t-2.jpg", "titan_clip_397_000510_movie_t-1.jpg", "titan_clip_397_000510_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane and no center line runs between shops, with cones and bollards along the left edge and smooth asphalt; traffic is light. A man directly ahead crosses the lane from right to left at walking pace, momentarily blocking the ego vehicle's path. Farther ahead, a white sedan is parked on the left side of the road beside the cones, narrowing the available lane. Other pedestrians walk along the right sidewalk parallel to traffic without entering the roadway.", "hazard_reasoning": "There is a white sedan parked on the left side of the road. A parked vehicle on the left may obstruct the lane and require extra space, so slow down to navigate safely."}
{"id": "train_00671", "split": "train", "clip_key": "2020-0212-102546_088491_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "088491"}, "frames": ["2020-0212-102546_088491_movie_t-3.jpg", "2020-0212-102546_088491_movie_t-2.jpg", "2020-0212-102546_088491_movie_t-1.jpg", "2020-0212-102546_088491_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban roadway with two same-direction lanes is bordered by metal guardrails, the pavement smooth, and traffic light with steady flow. A white van directly ahead in the ego lane proceeds at a constant pace as the road ahead is clear, setting the ego car's following distance. In the adjacent right lane, a light-colored compact car travels slightly ahead and maintains its lane without affecting the ego vehicle. Farther ahead, a few vehicles move away leaving ample gaps. Overhead blue directional signs are visible, and there are no pedestrians, cyclists, or obstacles.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane, because the road ahead is clear. The van may brake suddenly or obscure unexpected obstacles, so the driver should follow the vehicle ahead to respond promptly if it slows down."}
{"id": "train_00672", "split": "train", "clip_key": "2020-0129-144857_040721_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "040721"}, "frames": ["2020-0129-144857_040721_movie_t-3.jpg", "2020-0129-144857_040721_movie_t-2.jpg", "2020-0129-144857_040721_movie_t-1.jpg", "2020-0129-144857_040721_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs under an elevated structure with a guardrail and fenced work area on the right; the pavement is dry and traffic is heavy, largely stopped in the same direction. Directly ahead in the ego lane a black van stands still, halted by congestion ahead, and it blocks the ego car's path. In the adjacent lane to the left a white hatchback is slightly ahead and creeps forward, potentially edging into a gap but remaining alongside the ego vehicle. On the far left a small white van advances slowly beside the ego car, keeping pace without encroaching. Farther ahead, vehicles queue densely.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision with the stationary van caused by the congestion."}
{"id": "train_00673", "split": "train", "clip_key": "2020-0214-102601_025397_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "025397"}, "frames": ["2020-0214-102601_025397_movie_t-3.jpg", "2020-0214-102601_025397_movie_t-2.jpg", "2020-0214-102601_025397_movie_t-1.jpg", "2020-0214-102601_025397_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of the green sedan's lane change", "environment_perception": "An urban three-lane one-way road runs between large commercial buildings, the pavement is smooth and the leftmost lane is red-marked; there is no median and traffic moves at a moderate pace. A green sedan ahead shifts from the left lane into the ego lane, settling in front and reducing the following gap. Farther ahead, a white coach bus proceeds in the center of the flow and governs the pace of vehicles in front. To the right, a black SUV in the adjacent lane continues straight at a similar speed, occupying the space beside the ego vehicle and limiting an immediate right-lane change.", "hazard_reasoning": "There is a green sedan changing from the left lane to the ego lane. You should be aware because its lane change could lead to a side collision if unanticipated."}
{"id": "train_00674", "split": "train", "clip_key": "titan_clip_745_000042_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_745_000042_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_745_000042_movie_t-3_augB1.jpg", "titan_clip_745_000042_movie_t-2_augB1.jpg", "titan_clip_745_000042_movie_t-1_augB1.jpg", "titan_clip_745_000042_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrians", "environment_perception": "An urban shopping street appears with a narrow single-lane roadway and no divider; the asphalt is dry and there is no motor traffic, but pedestrian activity in the lane is heavy. A group of pedestrians in white shirts occupies the middle ahead, some walking toward and others away from the ego-vehicle, and they directly block its path. On the right edge beside storefronts, a man walks toward the ego-vehicle along the curb and drifts slightly into the lane, so he may enter the ego lane. Near the left edge by a restaurant, another pedestrian steps toward the center while gesturing. A blue circular sign on the left indicates straight ahead only.", "hazard_reasoning": "There is a group of pedestrians wearing white shirts, and walking towards and away from the ego car, in the middle of the road. The driver should yield to pedestrians crossing ahead to avoid collisions."}
{"id": "train_00675", "split": "train", "clip_key": "titan_clip_1238_000066_movie", "source": {"subset": "titan", "scenario": "clip_1238", "frame": "000066"}, "frames": ["titan_clip_1238_000066_movie_t-3.jpg", "titan_clip_1238_000066_movie_t-2.jpg", "titan_clip_1238_000066_movie_t-1.jpg", "titan_clip_1238_000066_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing", "environment_perception": "A narrow urban shopping street with smooth, undivided pavement curves gently to the right, and traffic is light with no vehicles immediately ahead or oncoming. A pedestrian in a black T-shirt crosses mid-block from the left to the right across the ego lane, moving steadily through the vehicle's path. On the right sidewalk ahead, a few pedestrians walk along the storefronts in the same direction, remaining on the sidewalk and not entering the road. Near the left curb by a shop entrance, another person stands at the edge but stays off the roadway. Buildings and trees at the bend create a partial blind curve that limits forward visibility.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, crossing the street in the middle of the road, from the left side to the right side. The pedestrian is crossing away from a marked crosswalk and may enter the vehicle's path unexpectedly, so the driver should be cautious."}
{"id": "train_00676", "split": "train", "clip_key": "2020-0214-145407_006240_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "006240"}, "frames": ["2020-0214-145407_006240_movie_t-3.jpg", "2020-0214-145407_006240_movie_t-2.jpg", "2020-0214-145407_006240_movie_t-1.jpg", "2020-0214-145407_006240_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial runs under and alongside an elevated structure, with smooth pavement and steady, light-to-moderate same-direction flow; no oncoming lanes are visible. A gray van drives directly ahead in the ego lane, maintaining a moderate pace and setting the ego car's speed. To the right, a white van in the adjacent lane moves slightly ahead while continuing straight, keeping its lane. Farther ahead, several vehicles in the center and right lanes travel in a small pack that constrains overall flow. An overhead blue direction sign with lane arrows to multiple destinations is prominent.", "hazard_reasoning": "There is a gray van driving in front of the ego car in the ego lane. The driver should maintain a safe following distance to anticipate any sudden braking by the vehicle ahead."}
{"id": "train_00677", "split": "train", "clip_key": "titan_clip_396_000258_movie", "source": {"subset": "titan", "scenario": "clip_396", "frame": "000258"}, "frames": ["titan_clip_396_000258_movie_t-3.jpg", "titan_clip_396_000258_movie_t-2.jpg", "titan_clip_396_000258_movie_t-1.jpg", "titan_clip_396_000258_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane in the ego direction runs between storefronts, with curbed sidewalks and no median; the pavement is smooth and traffic is light. A large white delivery truck is immediately ahead in the ego lane and moves slowly, constraining the ego car's pace. Farther ahead, another truck continues down the same lane, maintaining a short queue that the ego vehicle follows. A pedestrian wearing a green shirt crosses in front of the ego car from the left side of the lane, briefly entering the path. Several other pedestrians walk along the right sidewalk near shops but remain on the curb.", "hazard_reasoning": "There is a pedestrian wearing a green shirt, crossing in front of the ego car from the left side of the lane. You should slow down to allow the pedestrian to cross safely and avoid a collision."}
{"id": "train_00678", "split": "train", "clip_key": "2020-0129-144857_036065_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "036065"}, "frames": ["2020-0129-144857_036065_movie_t-3.jpg", "2020-0129-144857_036065_movie_t-2.jpg", "2020-0129-144857_036065_movie_t-1.jpg", "2020-0129-144857_036065_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs under an elevated structure, with smooth pavement and a guardrail along the right edge; traffic is heavy and queueing at a signal. Directly ahead in the ego lane, a black van is stopped because the traffic light shows red, holding the ego car. Farther ahead in the same lane, a box truck remains stationary with brake lights on as part of the queue. In the lane to the left, a white hatchback and other cars creep forward alongside the line of stopped vehicles. An overhead signal displays red, and a roadside sign indicates no U-turn.", "hazard_reasoning": "There is a black van stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to avoid a collision with the stationary van."}
{"id": "train_00679", "split": "train", "clip_key": "titan_clip_215_000444_movie", "source": {"subset": "titan", "scenario": "clip_215", "frame": "000444"}, "frames": ["titan_clip_215_000444_movie_t-3.jpg", "titan_clip_215_000444_movie_t-2.jpg", "titan_clip_215_000444_movie_t-1.jpg", "titan_clip_215_000444_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with trees and storefronts appears under clear daylight, a narrow single-lane corridor with no median and smooth pavement, and traffic moves slowly amid curbside parking. A cyclist rides ahead near the center of the ego lane, continuing straight and effectively setting the ego vehicle's pace. There is a white van parked on the right side of the road, occupying the curbside space and narrowing the usable lane. Farther ahead in the same direction, a small white van proceeds slowly between parked cars, so the ego vehicle follows at reduced speed. Parked vehicles also line the left curb, and the open shopfronts on the right bring clusters of pedestrians close to the curb though they remain on the sidewalk.", "hazard_reasoning": "There is a white van parked on the right side of the road. The driver should carefully manoeuvre around it to avoid collision with the parked vehicle."}
{"id": "train_00680", "split": "train", "clip_key": "2020-0204-150838_078200_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "078200"}, "frames": ["2020-0204-150838_078200_movie_t-3.jpg", "2020-0204-150838_078200_movie_t-2.jpg", "2020-0204-150838_078200_movie_t-1.jpg", "2020-0204-150838_078200_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban expressway with three same-direction lanes runs beside and under an elevated structure, the asphalt smooth while traffic is heavy and largely at a standstill. Directly ahead in the ego lane a white box truck is stopped with brake lights on, halted by congestion ahead and blocking the ego vehicle's path. Slightly ahead to the left a silver tanker truck in the adjacent lane is also stopped, limiting room to merge. To the right a dark flatbed truck waits nearly parallel, further boxing in the ego vehicle.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, because of traffic congestion ahead. Drivers should stop to maintain a safe following distance and avoid a collision with the halted vehicle."}
{"id": "train_00681", "split": "train", "clip_key": "titan_clip_637_000366_movie", "source": {"subset": "titan", "scenario": "clip_637", "frame": "000366"}, "frames": ["titan_clip_637_000366_movie_t-3.jpg", "titan_clip_637_000366_movie_t-2.jpg", "titan_clip_637_000366_movie_t-1.jpg", "titan_clip_637_000366_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians.", "environment_perception": "An urban two-way neighborhood street with very narrow lanes and no median is shown; the asphalt is worn and traffic is light. Two pedestrians in a white shirt and a striped shirt walk toward the camera along the right edge of the road, close to the carriageway and may enter the ego lane. Far ahead in the ego lane, a small white truck is slow or stopped near the center of the road, which constrains the pace. Parked vehicles and a large roadside sign line the right side, reducing lateral clearance.", "hazard_reasoning": "There are two pedestrians wearing a white and a striped t-shirt, walking on the right side of the road, towards the ego car. Because they are close to the roadway and may step into the lane, the driver should carefully manoeuvre to maintain safety."}
{"id": "train_00682", "split": "train", "clip_key": "2020-0217-110854_034969_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "034969"}, "frames": ["2020-0217-110854_034969_movie_t-3.jpg", "2020-0217-110854_034969_movie_t-2.jpg", "2020-0217-110854_034969_movie_t-1.jpg", "2020-0217-110854_034969_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and a painted center line runs between tall buildings; the pavement is dry and traffic is heavy, queued at an intersection. A silver hatchback directly ahead in the ego lane is stopped because the light is red, holding the ego vehicle. A large coach bus in the lane to the right is stopped alongside, preventing any rightward merge. A white van ahead in the left lane remains in the queue and inches forward, keeping pace with the line. Overhead signals display red for this approach and a sign indicates a left-turn lane, while oncoming lanes are visible beyond the center line.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_00683", "split": "train", "clip_key": "2020-0207-151349_028333_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "028333"}, "frames": ["2020-0207-151349_028333_movie_t-3.jpg", "2020-0207-151349_028333_movie_t-2.jpg", "2020-0207-151349_028333_movie_t-1.jpg", "2020-0207-151349_028333_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three same-direction lanes runs between tall buildings; the pavement is dry and traffic is moderate despite strong sun glare ahead. A gray truck ahead in the ego lane drives away from the ego car at a steady pace and governs the immediate gap. A white wagon slightly ahead in the rightmost lane proceeds parallel, remaining in its lane under an overhead sign indicating that lane is for right turns. Farther ahead in the left lane, a dark sedan travels at a similar speed and stays clear of the ego lane. A railing-and-trees median separates oncoming traffic on the far left.", "hazard_reasoning": "There is a gray truck driving in the ego lane away from the ego car. The driver should maintain awareness of this truck, as it may brake unexpectedly and require rapid reaction."}
{"id": "train_00684", "split": "train", "clip_key": "2020-0129-144857_051065_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "051065"}, "frames": ["2020-0129-144857_051065_movie_t-3.jpg", "2020-0129-144857_051065_movie_t-2.jpg", "2020-0129-144857_051065_movie_t-1.jpg", "2020-0129-144857_051065_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with a metal median barrier and smooth pavement carries heavy, stop-and-go traffic; the oncoming lanes run on the far side of the barrier. Directly ahead in the ego lane, a white hatchback is stopped and then creeps forward, constrained by congestion and setting the ego vehicle's pace. Farther ahead in the same path, a box truck and several cars queue tightly and move slowly, reinforcing the jam. In the lane to the left, a silver sedan rolls forward alongside and inches ahead within its lane without merging. Pedestrians walk on the right sidewalk behind the guardrail, well separated from traffic.", "hazard_reasoning": "There is a silver sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle."}
{"id": "train_00685", "split": "train", "clip_key": "2020-0204-150838_052820_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "052820"}, "frames": ["2020-0204-150838_052820_movie_t-3.jpg", "2020-0204-150838_052820_movie_t-2.jpg", "2020-0204-150838_052820_movie_t-1.jpg", "2020-0204-150838_052820_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway runs under elevated structures on a gentle left curve, with smooth pavement, a guardrail on the left edge, and a concrete median on the right separating opposing traffic; overall flow is light and steady. A silver box truck ahead in the ego lane drives away at a steady pace, effectively setting the ego vehicle's speed. Farther ahead, a few cars continue in the same direction with stable gaps and no lane changes. No signals, pedestrians, or unusual hazards are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00686", "split": "train", "clip_key": "2020-0205-103411_008227_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "008227"}, "frames": ["2020-0205-103411_008227_movie_t-3.jpg", "2020-0205-103411_008227_movie_t-2.jpg", "2020-0205-103411_008227_movie_t-1.jpg", "2020-0205-103411_008227_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked truck", "environment_perception": "An urban two-way street approaches a signalized intersection with a broad zebra crossing, the pavement is smooth and traffic is light to moderate. A small silver van travels ahead in the ego lane toward the junction at steady speed, effectively setting the pace. A white truck is parked along the left curb near the intersection, occupying the roadside and slightly narrowing the approach. On the right corner, two cyclists wait beside the crosswalk and may enter the path when the way opens. A pedestrian on the left sidewalk walks toward the intersection along the railing without entering the roadway.", "hazard_reasoning": "There is a white truck parked at the left side of the road. Be aware of the parked truck as it may obstruct visibility or limit lane space."}
{"id": "train_00687", "split": "train", "clip_key": "2020-0218-151547_008637_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "008637"}, "frames": ["2020-0218-151547_008637_movie_t-3.jpg", "2020-0218-151547_008637_movie_t-2.jpg", "2020-0218-151547_008637_movie_t-1.jpg", "2020-0218-151547_008637_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop for the red light", "environment_perception": "An urban multi-lane arterial approaches a broad signalized intersection with smooth pavement and a low median; traffic is light and the ego car is stopped. A silver motorcycle is directly ahead in the ego lane, stationary at the stop line for the red signal and holding our position. Cross traffic from the right moves left across the intersection, including a black taxi and several cars proceeding on their green and occupying the crossing. Several pedestrians wait on the left sidewalk near the crosswalk but remain off the roadway.", "hazard_reasoning": "There is a silver motorcycle stopped in front of the ego car, in the ego lane, because of a red traffic light. The motorcycle is halted due to the red signal, so the driver should stop to maintain a safe following distance and comply with traffic laws."}
{"id": "train_00688", "split": "train", "clip_key": "titan_clip_1272_000594_movie", "source": {"subset": "titan", "scenario": "clip_1272", "frame": "000594"}, "frames": ["titan_clip_1272_000594_movie_t-3.jpg", "titan_clip_1272_000594_movie_t-2.jpg", "titan_clip_1272_000594_movie_t-1.jpg", "titan_clip_1272_000594_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban two-way street with no lane markings runs between closely spaced buildings; the dry pavement looks worn and vehicle traffic is light as the car moves slowly among pedestrians. On the right near the curb, a pedestrian wearing a striped shirt and gray pants carries a white bag and walks away from the vehicle along the edge, close to the travel path. Ahead in the middle of the lane, another pedestrian walks toward the camera at a steady pace, occupying the ego lane and constraining progress. At the left foreground, a pedestrian approaches from the side and steps partly into the roadway, possibly entering the ego lane. An open garage on the right holds a parked white car, and a parking sign is visible farther ahead.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt, gray pants, and carrying a white bag, walking on the right side of the road, away from the ego car. The pedestrian's proximity to the roadway requires the driver to manoeuvre carefully to maintain safe clearance."}
{"id": "train_00689", "split": "train", "clip_key": "titan_clip_551_000450_movie", "source": {"subset": "titan", "scenario": "clip_551", "frame": "000450"}, "frames": ["titan_clip_551_000450_movie_t-3.jpg", "titan_clip_551_000450_movie_t-2.jpg", "titan_clip_551_000450_movie_t-1.jpg", "titan_clip_551_000450_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of traffic conductor", "environment_perception": "A busy urban shopping street with a narrow single-lane carriageway and no divider has smooth asphalt and light vehicle flow as the car approaches a zebra crossing. Ahead at the crossing, a traffic conductor in a brown shirt stands in the stripes and directs vehicles, briefly holding the ego-vehicle's movement. A small white delivery truck ahead on the right is stopped partly over the crosswalk near the curb, limiting clearance in the lane. Several pedestrians cluster at both curbs and some step onto the crossing from the left under the conductor's guidance, occupying the space ahead. Farther right, a larger box truck is parked by the curb, narrowing the roadway beyond the intersection.", "hazard_reasoning": "There is a traffic conductor wearing a brown shirt and standing in a pedestrian crossing, because they are directing traffic. The driver should be cautious as the conductor may step onto the roadway or change signals unexpectedly, affecting vehicle movement."}
{"id": "train_00690", "split": "train", "clip_key": "2020-0129-105040_031213_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "031213"}, "frames": ["2020-0129-105040_031213_movie_t-3.jpg", "2020-0129-105040_031213_movie_t-2.jpg", "2020-0129-105040_031213_movie_t-1.jpg", "2020-0129-105040_031213_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Yield to the cyclist at the crosswalk.", "environment_perception": "An urban intersection under an elevated roadway on a two-way street with a smooth surface and light traffic is ahead. At the crosswalk, a cyclist in a black jacket rides left to right across the lane in front of the ego vehicle, so the ego must yield. Alongside, a second cyclist also crosses left to right through the same crosswalk, continuing across the ego path. On the near right, a white flatbed mini-truck is stopped at the curb line before the crosswalk, slightly narrowing the ego lane. A few parked bicycles sit along the left sidewalk, and sparse oncoming traffic moves in the right-side lane farther ahead.", "hazard_reasoning": "There is a cyclist wearing a black jacket and crossing the street, from the left side to the right side, ahead at the crosswalk. The cyclist is entering the vehicle's path at the marked crosswalk, so the driver should yield to avoid a collision."}
{"id": "train_00691", "split": "train", "clip_key": "titan_clip_725_000186_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_725_000186_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_725_000186_movie_t-3_augB1.jpg", "titan_clip_725_000186_movie_t-2_augB1.jpg", "titan_clip_725_000186_movie_t-1_augB1.jpg", "titan_clip_725_000186_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single forward lane and no divider runs between buildings, the pavement smooth and traffic light as the ego approaches a small cross street. Ahead in the middle of the lane, a pedestrian wearing a black shirt and shorts walks away from the ego vehicle toward the intersection, occupying the lane and constraining the approach. A silver van is parked on the left beside a shopfront and several bicycles line the curb, but they remain clear of the travel lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and shorts, walking away from the ego car and ahead of it in the middle of the road. The pedestrian is crossing within the vehicle's path and may not be visible until the last moment, so the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_00692", "split": "train", "clip_key": "2020-0131-135401_007984_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "007984"}, "frames": ["2020-0131-135401_007984_movie_t-3.jpg", "2020-0131-135401_007984_movie_t-2.jpg", "2020-0131-135401_007984_movie_t-1.jpg", "2020-0131-135401_007984_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with narrow lanes and no median runs between buildings on the left and a fence on the right; the pavement looks smooth, traffic otherwise light, and strong sun glare enters from the right. Directly ahead in the ego lane, a white box truck is stopped, holding the ego vehicle's progress. To the right, an oncoming dark SUV moves forward in the opposite lane beside the truck, limiting any chance to go around. Several small vans are parked along the left curb in a marked bay, reducing lateral clearance but remaining static.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The stopped truck poses a direct collision risk if the driver does not stop in time, so the driver should stop to avoid an accident."}
{"id": "train_00693", "split": "train", "clip_key": "titan_clip_60_000588_movie", "source": {"subset": "titan", "scenario": "clip_60", "frame": "000588"}, "frames": ["titan_clip_60_000588_movie_t-3.jpg", "titan_clip_60_000588_movie_t-2.jpg", "titan_clip_60_000588_movie_t-1.jpg", "titan_clip_60_000588_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the bicycle", "environment_perception": "An urban two-way street with buildings tight to the curb has no median and smooth pavement, and traffic is light as the ego vehicle proceeds left of center. A bicycle on the right side near the foreground is parked with its front wheel sticking out into the road, potentially encroaching on the ego lane. A pedestrian on the left edge close ahead walks in the same direction along the curb, remaining close to the travel path. Farther ahead, several pedestrians are in the roadway near a side street, moving across the lane area. Parked vehicles on the right, including a white sedan protruding from a driveway and a white van at the curb, further narrow the passage.", "hazard_reasoning": "There is a bicycle on the right side of the road sticking out into the road. The bicycle protrudes into the driving lane, requiring the driver to carefully manoeuvre around it to avoid collision."}
{"id": "train_00694", "split": "train", "clip_key": "2020-0228-102841_008465_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "008465"}, "frames": ["2020-0228-102841_008465_movie_t-3.jpg", "2020-0228-102841_008465_movie_t-2.jpg", "2020-0228-102841_008465_movie_t-1.jpg", "2020-0228-102841_008465_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way multilane street runs between tall buildings as the ego car nears a signalized intersection; the pavement is dry and traffic is moderate. A white van directly ahead in the ego lane is stopped, waiting to turn right because of oncoming traffic, holding the ego vehicle. In the adjacent same-direction lane ahead-left, a white minivan rolls forward toward the junction, continuing straight past. In the oncoming lanes on the right, a small truck and other vehicles approach and pass through the intersection. The signal ahead shows green for the ego approach, and a short curb island with orange bollards lines the right edge beside the van.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, waiting to turn right because of oncoming traffic. You should stop to maintain a safe following distance and prevent a rear-end collision when the van turns."}
{"id": "train_00695", "split": "train", "clip_key": "titan_clip_599_000306_movie", "source": {"subset": "titan", "scenario": "clip_599", "frame": "000306"}, "frames": ["titan_clip_599_000306_movie_t-3.jpg", "titan_clip_599_000306_movie_t-2.jpg", "titan_clip_599_000306_movie_t-1.jpg", "titan_clip_599_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with shopfronts, edge lines but no median, and smooth dry pavement carries light traffic. A small white van ahead in the ego lane is stopped near the left side and partially occupies the lane, constraining the pace. On the left, a pedestrian in a gray shirt with a backpack walks away from the ego in the roadway to pass the parked vehicle ahead and may encroach on the ego path. Parked bicycles and storefront ramps line both sides, narrowing the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, carrying a backpack, walking on the left side of the road, away from the ego car, because of the parked vehicle ahead. The pedestrian may step into the driving lane to bypass the parked van, so you should slow down to maintain safety."}
{"id": "train_00696", "split": "train", "clip_key": "titan_clip_480_000396_movie", "source": {"subset": "titan", "scenario": "clip_480", "frame": "000396"}, "frames": ["titan_clip_480_000396_movie_t-3.jpg", "titan_clip_480_000396_movie_t-2.jpg", "titan_clip_480_000396_movie_t-1.jpg", "titan_clip_480_000396_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the stopped van", "environment_perception": "A narrow urban commercial street with paving-stone pavement forms a single lane without a median, lined by bollards and shopfronts; traffic flow is light and slow. Ahead in the ego lane on the right side of the road, a white van is stopped, partially blocking the path. Along the right curb near the van, a three-wheeled delivery scooter waits or inches forward, further narrowing the available lane. Several pedestrians move along the right edge beside the scooter and van, walking close to the roadway and may enter the ego lane. Parked bicycles and a motorcycle line the left edge, reducing lateral clearance.", "hazard_reasoning": "There's a white van stopped in the ego lane, on the right side of the road, because the. The driver needs to carefully manoeuvre around the stopped van to maintain a safe distance and avoid collision."}
{"id": "train_00697", "split": "train", "clip_key": "titan_clip_255_000570_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_255_000570_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_255_000570_movie_t-3_augB1.jpg", "titan_clip_255_000570_movie_t-2_augB1.jpg", "titan_clip_255_000570_movie_t-1_augB1.jpg", "titan_clip_255_000570_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with no centerline runs between buildings, with scaffolding, cones, and signs occupying the left curb and bollards edging the right sidewalk; the pavement is dry and slightly worn, and traffic is light. A small black van ahead in the same lane moves slowly away from the ego car, setting the pace. A pedestrian in gray walks away from the ego vehicle in the middle of the road due to the construction work on the left and may drift into the ego lane. Another pedestrian on the right sidewalk near the camera walks along the curb, remaining out of the lane. No salient signals or posted limits are visible, and the work zone narrows the usable lane and limits clearance.", "hazard_reasoning": "There is a pedestrian wearing gray clothing and walking away from the ego car, in the middle of the road, because of construction work. The pedestrian's unpredictable movement in the lane due to the construction increases the risk of collision, so the driver should slow down."}
{"id": "train_00698", "split": "train", "clip_key": "2020-0207-151349_024044_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "024044"}, "frames": ["2020-0207-151349_024044_movie_t-3.jpg", "2020-0207-151349_024044_movie_t-2.jpg", "2020-0207-151349_024044_movie_t-1.jpg", "2020-0207-151349_024044_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement and no physical median runs between tall buildings; traffic is moderate near a wide intersection with a zebra crossing. The overhead signal ahead shows green. A white box truck directly ahead in the ego lane slows as it approaches the crosswalk, constraining the ego car's pace. A silver van in the right adjacent lane travels slightly ahead at a similar speed, reducing space to change lanes. Pedestrians line the left sidewalk at the crosswalk and wait, remaining clear of the roadway.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The white truck's deceleration could force the driver to brake suddenly, so the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_00699", "split": "train", "clip_key": "titan_clip_867_000024_movie", "source": {"subset": "titan", "scenario": "clip_867", "frame": "000024"}, "frames": ["titan_clip_867_000024_movie_t-3.jpg", "titan_clip_867_000024_movie_t-2.jpg", "titan_clip_867_000024_movie_t-1.jpg", "titan_clip_867_000024_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban commercial street with a single narrow lane and no centerline runs between dense storefronts; the brick-paved surface is in good condition and motor traffic is light while pedestrian flow is heavy. On the left, a white truck is parked with its rear door open and a loading ramp extended into the lane, reducing the available width near the ego vehicle. Ahead to the right, a pedestrian steps off the sidewalk and crosses leftward in front of the vehicle's path. Along the left edge beside the truck, a man walks toward the camera close to the lane, passing the tailgate. Farther ahead, several pedestrians move along the middle of the street away from the camera, occupying the lane and constraining the vehicle's pace.", "hazard_reasoning": "There is a white truck parked on the left side of the road. This parked vehicle partially blocks the roadway, requiring careful manoeuvring to avoid collision."}
{"id": "train_00700", "split": "train", "clip_key": "2020-0204-103442_080314_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "080314"}, "frames": ["2020-0204-103442_080314_movie_t-3.jpg", "2020-0204-103442_080314_movie_t-2.jpg", "2020-0204-103442_080314_movie_t-1.jpg", "2020-0204-103442_080314_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each way runs between low buildings and guardrails, divided by a solid yellow centerline on smooth dry pavement; traffic is light. A black sedan directly ahead in the ego lane slows, constraining the ego car's pace. An oncoming car approaches in the right lane farther ahead, holding a steady line and continuing straight, so passing is not available. A marked pedestrian crossing spans the road ahead.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car. This indicates the sedan ahead is decelerating, so the driver must slow down to maintain a safe distance."}
{"id": "train_00701", "split": "train", "clip_key": "titan_clip_616_000486_movie", "source": {"subset": "titan", "scenario": "clip_616", "frame": "000486"}, "frames": ["titan_clip_616_000486_movie_t-3.jpg", "titan_clip_616_000486_movie_t-2.jpg", "titan_clip_616_000486_movie_t-1.jpg", "titan_clip_616_000486_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of the cyclist ahead", "environment_perception": "A narrow urban shopping street forms a two-way roadway without a median, the asphalt appears patched but smooth, and traffic is light. On the right edge near the ego vehicle, a cyclist in a white shirt is stopped facing toward the car since there is no bicycle lane. Farther ahead in the center of the road, another cyclist rides away from the camera in the same direction. Storefronts, bollards, and a few parked bicycles line the curbs, while the travel lane remains unobstructed and no signals or speed signs are evident.", "hazard_reasoning": "There is a cyclist wearing a white shirt, stopped on the right side of the road, facing towards the ego car, because there is no bicycle lane. The cyclist could merge into the lane unexpectedly, posing a collision risk; drivers should be cautious."}
{"id": "train_00702", "split": "train", "clip_key": "titan_clip_1293_000300_movie", "source": {"subset": "titan", "scenario": "clip_1293", "frame": "000300"}, "frames": ["titan_clip_1293_000300_movie_t-3.jpg", "titan_clip_1293_000300_movie_t-2.jpg", "titan_clip_1293_000300_movie_t-1.jpg", "titan_clip_1293_000300_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street passes a convenience store, with no centerline and freshly resurfaced asphalt; traffic is light. Ahead, a pedestrian carrying an umbrella is in the middle of the road crossing toward the right, directly in the ego path and constraining the pace. Along the right curb near the crossing, a white van is parked facing the camera, encroaching slightly into the roadway and narrowing the available space. Farther ahead in the same direction, a small white box truck waits near the center of the street, leaving limited clearance to continue.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and crossing the street, in the middle of the road, toward the right side. The driver should slow down because the pedestrian is crossing in the middle of the road and may not be seen in time."}
{"id": "train_00703", "split": "train", "clip_key": "titan_clip_741_000264_movie", "source": {"subset": "titan", "scenario": "clip_741", "frame": "000264"}, "frames": ["titan_clip_741_000264_movie_t-3.jpg", "titan_clip_741_000264_movie_t-2.jpg", "titan_clip_741_000264_movie_t-1.jpg", "titan_clip_741_000264_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street without a centerline comes into view, the pavement smooth and dry, with light traffic as the ego-vehicle approaches a small intersection. A pedestrian wearing beige shorts, a red T-shirt, and a backpack is at the right side of the intersection and crosses from right to left, moving toward and across the ego path. A small white truck at the near left noses out from a side street into the intersection and rolls slowly, potentially entering the ego lane. Farther ahead, a small car in the same direction proceeds straight, loosely pacing traffic. Parked vehicles line the left curb.", "hazard_reasoning": "There is a pedestrian wearing beige shorts, a red t-shirt, and carrying a backpack, at the right side of the intersection, crossing the street from the right side of the street to the left side. The driver should slow down to avoid a potential collision with the crossing pedestrian and ensure safe passage."}
{"id": "train_00704", "split": "train", "clip_key": "titan_clip_918_000180_movie", "source": {"subset": "titan", "scenario": "clip_918", "frame": "000180"}, "frames": ["titan_clip_918_000180_movie_t-3.jpg", "titan_clip_918_000180_movie_t-2.jpg", "titan_clip_918_000180_movie_t-1.jpg", "titan_clip_918_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with a single narrow travel lane and no median has smooth pavement and very light vehicle traffic as the ego car approaches a zebra crossing. On the left, a man wearing a dark-gray suit walks away from the ego car across the crosswalk, stepping around a parked vehicle and briefly occupying the ego lane. A silver van is parked at the left curb beside cones, encroaching slightly into the lane and constraining the approach. Farther ahead, a few pedestrians move along the sidewalks and one person crosses in the distance without affecting the ego path. A blue pedestrian crossing sign stands on the right at the crosswalk.", "hazard_reasoning": "There is a man wearing a dark-gray suit and walking away from the ego car, on the left side of the road, because of the parked vehicle. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_00705", "split": "train", "clip_key": "titan_clip_148_000744_movie", "source": {"subset": "titan", "scenario": "clip_148", "frame": "000744"}, "frames": ["titan_clip_148_000744_movie_t-3.jpg", "titan_clip_148_000744_movie_t-2.jpg", "titan_clip_148_000744_movie_t-1.jpg", "titan_clip_148_000744_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street with single narrow lanes and no median runs between tall buildings; the pavement is smooth and light traffic slows near a loading area. On the left ahead, a parked box truck is being serviced, and two men stand and move beside its rear and side, narrowing the lane and possibly stepping into the path. Farther ahead in the same direction, a small white van rolls slowly along the center of the lane and sets the pace. On the right side of the road, a pedestrian in a white shirt walks away from the ego vehicle along the curb, remaining clear of the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking on the right side of the road, away from the ego-car. Because the pedestrian could step into the lane from behind the parked truck's blind spot, you should carefully manoeuvre to maintain visibility and safe clearance."}
{"id": "train_00706", "split": "train", "clip_key": "2020-0226-140503_104843_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "104843"}, "frames": ["2020-0226-140503_104843_movie_t-3.jpg", "2020-0226-140503_104843_movie_t-2.jpg", "2020-0226-140503_104843_movie_t-1.jpg", "2020-0226-140503_104843_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way intersection with no median and smooth pavement carries moderate traffic as vehicles slow near the junction. A white box truck directly ahead in the ego lane slows before the intersection, constraining the ego car's pace. Ahead left, a white hatchback in the adjacent same-direction lane also slows near the crosswalk, remaining parallel to the ego path. On the right side, oncoming vehicles including a white van and a small car proceed through their lanes toward the camera without encroaching. Several pedestrians wait on the left sidewalk near the corner shops.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's reduced speed may require the driver to slow down to maintain a safe following distance."}
{"id": "train_00707", "split": "train", "clip_key": "2020-0204-150838_058712_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "058712"}, "frames": ["2020-0204-150838_058712_movie_t-3.jpg", "2020-0204-150838_058712_movie_t-2.jpg", "2020-0204-150838_058712_movie_t-1.jpg", "2020-0204-150838_058712_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene is on a narrow urban expressway ramp with one lane bounded by concrete barriers and smooth pavement, passing under elevated structures; traffic nearby is heavy, especially in the parallel lanes to the right. A gray coach bus directly ahead in the ego lane slows and creeps, because of congestion ahead, and it blocks the view and governs the ego car's pace. To the right, a queue of trucks and cars moves slowly in adjacent lanes beyond the barrier, indicating the backup but unable to enter the ego path. No salient signals or unusual markings appear.", "hazard_reasoning": "There is a gray bus that has slowed down in the ego lane, in front of the ego car, because of traffic congestion ahead. The bus's reduced speed indicates ongoing congestion, so the driver should reduce speed to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_00708", "split": "train", "clip_key": "2020-0203-154554_058411_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "058411"}, "frames": ["2020-0203-154554_058411_movie_t-3.jpg", "2020-0203-154554_058411_movie_t-2.jpg", "2020-0203-154554_058411_movie_t-1.jpg", "2020-0203-154554_058411_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the vehicle ahead.", "environment_perception": "An urban two-way street with tree-lined sidewalks and a painted chevron median divides single lanes in each direction; the dry pavement carries slow, congested traffic. Immediately ahead in the left-hand ego lane, a silver van is stopped because of congestion, holding the ego vehicle in place. To the left near the curb, a beige minivan slightly ahead progresses slowly along the queue and edges toward the travel lane, potentially merging in front of the van. On the right side of the median, a white minivan approaches as oncoming traffic, continuing past without interruption. Farther ahead, additional vehicles move slowly in both directions, maintaining the overall heavy flow.", "hazard_reasoning": "A silver van is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver must stop to avoid colliding with the stationary van and maintain a safe following distance."}
{"id": "train_00709", "split": "train", "clip_key": "2020-0227-104226_077679_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "077679"}, "frames": ["2020-0227-104226_077679_movie_t-3.jpg", "2020-0227-104226_077679_movie_t-2.jpg", "2020-0227-104226_077679_movie_t-1.jpg", "2020-0227-104226_077679_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential two-way street with a single narrow lane in each direction and no median runs between closely spaced buildings; the pavement is smooth and a red raised speed table lies ahead, with light traffic. A black van drives ahead in the ego lane, moving away at a steady pace along the center of the narrow roadway. The oncoming lane remains clear with no opposing vehicles visible. A small side street opens from the right near the speed table, and trash bags sit by the left curb outside the lane.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car. Follow the vehicle ahead to maintain safe spacing in case of sudden braking."}
{"id": "train_00710", "split": "train", "clip_key": "2020-0212-150403_001295_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "001295"}, "frames": ["2020-0212-150403_001295_movie_t-3.jpg", "2020-0212-150403_001295_movie_t-2.jpg", "2020-0212-150403_001295_movie_t-1.jpg", "2020-0212-150403_001295_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial has smooth pavement and no physical median, with traffic initially queued at an intersection and then beginning to move; overall flow becomes moderate. The ego vehicle travels in the left curb lane marked red. A black sedan directly ahead in the ego lane accelerates from a stop as the light turns green, and the ego follows at its pace. A yellow hatchback in the adjacent right lane advances slightly faster, continuing straight alongside and remaining just ahead. Farther ahead in the right lane, a white van slows into the forming queue near the junction, shaping the pace for that lane. An overhead signal changes to green, releasing the traffic.", "hazard_reasoning": "There is a black sedan accelerating from a stop in front of the ego car in the ego lane because of a green traffic light. You should start moving promptly to keep pace with the vehicle ahead and avoid holding up traffic as it accelerates."}
{"id": "train_00711", "split": "train", "clip_key": "titan_clip_504_000306_movie", "source": {"subset": "titan", "scenario": "clip_504", "frame": "000306"}, "frames": ["titan_clip_504_000306_movie_t-3.jpg", "titan_clip_504_000306_movie_t-2.jpg", "titan_clip_504_000306_movie_t-1.jpg", "titan_clip_504_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians.", "environment_perception": "A narrow urban back street without center markings runs between tall buildings on the left and a guardrail with a fenced drop on the right; the worn pavement has scattered litter, and no vehicles are present, so traffic is light. Ahead on the right edge, a group of three pedestrians, including one in black pants with a brown shirt and another in black pants with a white shirt, walks toward the ego vehicle along the curb because there is no sidewalk, encroaching on the drivable space and potentially constraining the ego's pace. The lane remains tight as the road continues forward with limited clearance by the guardrail.", "hazard_reasoning": "There's a group of pedestrians, one wearing black pants and a brown shirt, one wearing black pants and a white shirt, walking toward the ego car on the right side of the road, because there's no sidewalk. The driver should carefully manoeuvre around the pedestrians to avoid collision as they occupy the roadway."}
{"id": "train_00712", "split": "train", "clip_key": "2020-0226-140503_028253_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "028253"}, "frames": ["2020-0226-140503_028253_movie_t-3.jpg", "2020-0226-140503_028253_movie_t-2.jpg", "2020-0226-140503_028253_movie_t-1.jpg", "2020-0226-140503_028253_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the stopped blue van.", "environment_perception": "An urban two-way road with one lane each direction runs straight ahead, undivided by a solid center line on wet pavement, and traffic flow is light to moderate. A blue van is stopped on the left side slightly ahead, waiting to enter the ego lane and potentially merge into the path. A white mini-truck is parked further ahead along the left edge near the curb, reducing lateral space. Several oncoming cars and a small truck travel toward the camera in the opposite lane at steady speed. The number 40 is painted on the roadway, indicating the posted speed.", "hazard_reasoning": "There is a blue van stopped on the left side of the road, because they are waiting to enter the ego lane. The stopped van may pull into the ego lane unexpectedly, so the driver should monitor its movement and adjust speed accordingly."}
{"id": "train_00713", "split": "train", "clip_key": "2020-0205-152530_053352_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "053352"}, "frames": ["2020-0205-152530_053352_movie_t-3.jpg", "2020-0205-152530_053352_movie_t-2.jpg", "2020-0205-152530_053352_movie_t-1.jpg", "2020-0205-152530_053352_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated expressway with three same-direction lanes and guardrails on both sides shows smooth pavement and light, steadily flowing traffic. Ahead in the leftmost ego lane, a silver van drives away and gradually opens its gap as traffic flows. Slightly farther ahead in the middle lane, a dark car continues at a steady speed parallel to the ego path without influencing the lane. Farther right, another vehicle proceeds in its lane at similar pace. Overhead flyovers and side barriers line the route, and no signals or intersections are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00714", "split": "train", "clip_key": "2020-0227-104226_078728_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "078728"}, "frames": ["2020-0227-104226_078728_movie_t-3.jpg", "2020-0227-104226_078728_movie_t-2.jpg", "2020-0227-104226_078728_movie_t-1.jpg", "2020-0227-104226_078728_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A quiet urban residential street with one narrow lane in each direction and no median appears dry and well marked, and traffic remains light throughout. The road curves gently right through a chicane protected by green guardrails, creating a brief pinch point before opening slightly. A white van ahead at the left curb is stationary or creeping and partly encroaches into the ego lane, constraining the available space as the vehicle approaches. No oncoming vehicles are visible and no pedestrians enter the roadway. A convex safety mirror on a pole to the right is visible near the bend.", "hazard_reasoning": "There is no immediate hazard visible, so the driver can proceed normally."}
{"id": "train_00715", "split": "train", "clip_key": "titan_clip_324_000660_movie", "source": {"subset": "titan", "scenario": "clip_324", "frame": "000660"}, "frames": ["titan_clip_324_000660_movie_t-3.jpg", "titan_clip_324_000660_movie_t-2.jpg", "titan_clip_324_000660_movie_t-1.jpg", "titan_clip_324_000660_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban alley with a single unmarked lane runs between tall buildings, with smooth but tight pavement and no median; traffic is light with no other vehicles visible. Orange safety cones and a low curb line the left edge, narrowing usable space, while a couple of bicycles are parked at the right curb. A pedestrian wearing a white T-shirt walks toward the ego car along the left side near the cones and may drift into the lane as they approach. No salient signals or posted speeds are evident, and the rest of the alley ahead appears clear.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt and walking on the left side of the road, toward the ego car. Therefore, the driver should manoeuvre carefully around the pedestrian to maintain safe clearance."}
{"id": "train_00716", "split": "train", "clip_key": "2020-0210-155354_045179_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "045179"}, "frames": ["2020-0210-155354_045179_movie_t-3.jpg", "2020-0210-155354_045179_movie_t-2.jpg", "2020-0210-155354_045179_movie_t-1.jpg", "2020-0210-155354_045179_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the merging hatchback", "environment_perception": "A two-way urban arterial with two lanes per direction and a painted double white median runs on dry, smooth pavement with moderate traffic. Ahead, a white hatchback moves from the ego lane into the left lane, easing out of the ego vehicle's path. A dark sedan remains ahead in the ego lane at a similar speed and effectively sets the pace. To the right of the median, a white oncoming truck approaches and passes steadily within its lane, followed by other oncoming cars.", "hazard_reasoning": "There is a white hatchback in the left lane, changing lanes from the ego lane to the left lane. This maneuver may encroach on your path, so you should monitor the hatchback's movement and adjust your driving accordingly."}
{"id": "train_00717", "split": "train", "clip_key": "2020-0218-103119_024355_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "024355"}, "frames": ["2020-0218-103119_024355_movie_t-3.jpg", "2020-0218-103119_024355_movie_t-2.jpg", "2020-0218-103119_024355_movie_t-1.jpg", "2020-0218-103119_024355_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and maintain safe distance", "environment_perception": "An urban multilane road runs between tall buildings, divided by a low median with flexible orange posts; the pavement is smooth and local flow appears light though it slows farther ahead. A white box truck is stopped directly ahead in the ego lane, remaining stationary because of congestion up the road and blocking the ego vehicle's path. A pedestrian walks along the left sidewalk near a storefront without entering the carriageway. Roadside barriers line the left edge by the walkway, and the median posts to the right narrow the usable lane beside the truck.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop and maintain a safe distance to avoid a collision under this situation."}
{"id": "train_00718", "split": "train", "clip_key": "2020-0226-140503_044967_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "044967"}, "frames": ["2020-0226-140503_044967_movie_t-3.jpg", "2020-0226-140503_044967_movie_t-2.jpg", "2020-0226-140503_044967_movie_t-1.jpg", "2020-0226-140503_044967_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to maintain safe following distance", "environment_perception": "An urban multi-lane arterial with two same-direction lanes runs past tall buildings, separated on the right by a narrow raised median with railings; the pavement is smooth and traffic is heavy, moving slowly in a queue. A white SUV directly ahead in the ego lane slows toward the line of vehicles, limiting the ego car's pace. In the adjacent right lane, a marked police car travels slowly alongside slightly ahead, remaining parallel and potentially blocking lane changes. Farther ahead, several vans and cars are stopped or crawling, creating congestion that backs up toward the ego vehicle. Blue overhead direction signs and roadside no-stopping signs are visible, and construction fencing lines the left sidewalk.", "hazard_reasoning": "There is a silver sedan, that has stopped, in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop immediately to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_00719", "split": "train", "clip_key": "2020-0213-143552_047365_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "047365"}, "frames": ["2020-0213-143552_047365_movie_t-3.jpg", "2020-0213-143552_047365_movie_t-2.jpg", "2020-0213-143552_047365_movie_t-1.jpg", "2020-0213-143552_047365_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with two same-direction lanes and no median runs between tall buildings; the pavement looks smooth and traffic is light. A gray box truck directly ahead in the ego lane slows, constraining the ego car's pace. Farther ahead in the adjacent left lane, a motorcycle proceeds straight and gradually pulls away without entering the ego lane. Shrubs line the right curb and a side street opens from the left near the motorcycle, with no oncoming traffic or crossing pedestrians visible.", "hazard_reasoning": "There is a gray truck slowing down in front of the ego car. The truck's reduced speed could lead to a rear-end collision if the driver does not decrease speed promptly."}
{"id": "train_00720", "split": "train", "clip_key": "titan_clip_17_000426_movie", "source": {"subset": "titan", "scenario": "clip_17", "frame": "000426"}, "frames": ["titan_clip_17_000426_movie_t-3.jpg", "titan_clip_17_000426_movie_t-2.jpg", "titan_clip_17_000426_movie_t-1.jpg", "titan_clip_17_000426_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane each direction runs between trees and office buildings; the pavement is dry and traffic is heavy and slow. A white van directly ahead in the ego lane slows, bunching the queue and constraining the ego car's pace. An oncoming white van approaches in the opposite lane on the right and continues straight past. A black sedan sits at the left curb near the ego vehicle, reducing lateral space as the line creeps forward. A no-parking sign on a pole to the left is clearly visible.", "hazard_reasoning": "There is a white van slowing down in front of the ego car. You should reduce speed to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_00721", "split": "train", "clip_key": "titan_clip_753_000450_movie", "source": {"subset": "titan", "scenario": "clip_753", "frame": "000450"}, "frames": ["titan_clip_753_000450_movie_t-3.jpg", "titan_clip_753_000450_movie_t-2.jpg", "titan_clip_753_000450_movie_t-1.jpg", "titan_clip_753_000450_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street with smooth asphalt and no median runs between buildings, and traffic is light. On the right edge ahead, a pedestrian wearing a striped T-shirt pushes a cart and walks away from the ego car along the curb, close to the travel lane and potentially entering it as the vehicle approaches. Farther ahead on the right, a small red truck is stopped by the curb, narrowing the passage as the road bends slightly right. No other moving vehicles are visible nearby. A blue pedestrian crossing sign stands on the left, and a 30 marking is painted on the pavement. Orange cones and shop signboards line the sides but remain off the roadway.", "hazard_reasoning": "There is a pedestrian wearing a striped T-shirt, pushing a cart, and walking away from the ego car, on the right side of the road. The pedestrian could suddenly enter the lane, so the driver should maneuver carefully around them to maintain safe clearance."}
{"id": "train_00722", "split": "train", "clip_key": "2020-0206-101736_088789_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "088789"}, "frames": ["2020-0206-101736_088789_movie_t-3.jpg", "2020-0206-101736_088789_movie_t-2.jpg", "2020-0206-101736_088789_movie_t-1.jpg", "2020-0206-101736_088789_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with two same-direction lanes runs alongside apartment blocks, separated from opposing lanes on the right by a low hedge median; the pavement is dry and smooth and traffic is moderate with a short queue ahead. A white light truck is stopped ahead in the ego lane, directly in the path of travel and setting the pace. A black hatchback in the same lane ahead slows and waits behind this truck, further constraining the ego vehicle. In the adjacent right lane, two large blue cargo trucks ahead move slowly in parallel with the queue, occupying the neighboring lane as they approach the same stop, while light oncoming traffic proceeds beyond the median.", "hazard_reasoning": "There is a white truck that has stopped in front of the ego car in the ego lane, due to the red traffic light ahead. The driver must stop because the white truck ahead is halted at the red light to prevent a rear-end collision."}
{"id": "train_00723", "split": "train", "clip_key": "titan_clip_626_000084_movie", "source": {"subset": "titan", "scenario": "clip_626", "frame": "000084"}, "frames": ["titan_clip_626_000084_movie_t-3.jpg", "titan_clip_626_000084_movie_t-2.jpg", "titan_clip_626_000084_movie_t-1.jpg", "titan_clip_626_000084_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking on road", "environment_perception": "An urban commercial alley with a single narrow shared roadway is paved with bricks, lacks lane markings or a median, and carries light, slow traffic. A small black van is ahead in the middle of the path, briefly paused then creeping forward, constraining the ego vehicle's pace. On the left edge, a pedestrian wearing blue pants and a backpack walks away from the ego vehicle along the roadway because there is no sidewalk, passing close to the ego path. Another pedestrian stands by a storefront at the left curb, facing the street but not stepping into the lane. Bicycles are parked along the right side beside vending machines, narrowing the usable width.", "hazard_reasoning": "There is a pedestrian wearing blue pants and carrying a backpack, walking on the left side of the road, away from the ego car, because there is no sidewalk. The pedestrian walking on the roadway without a sidewalk poses a potential hazard ahead, so the driver should be aware of them to avoid a collision."}
{"id": "train_00724", "split": "train", "clip_key": "titan_clip_873_000492_movie", "source": {"subset": "titan", "scenario": "clip_873", "frame": "000492"}, "frames": ["titan_clip_873_000492_movie_t-3.jpg", "titan_clip_873_000492_movie_t-2.jpg", "titan_clip_873_000492_movie_t-1.jpg", "titan_clip_873_000492_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban street with a single narrow lane in the ego direction has smooth pavement and light vehicle traffic as the car approaches a zebra crossing. On the left near the ego, a pedestrian in a blue T-shirt walks in the roadway toward the car to pass a parked vehicle and may edge into the ego lane. Farther ahead at the crosswalk, a group of pedestrians moves rightward across the ego path, constraining the approach. On the right, several pedestrians continue along the fenced sidewalk without entering the lane. A silver van is parked along the left curb, partly intruding into the lane.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt and walking on the left side of the road, towards the ego car, because of a parked vehicle. The driver should manoeuvre carefully to maintain a safe distance and avoid hitting the pedestrian."}
{"id": "train_00725", "split": "train", "clip_key": "2020-0131-135401_009484_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "009484"}, "frames": ["2020-0131-135401_009484_movie_t-3.jpg", "2020-0131-135401_009484_movie_t-2.jpg", "2020-0131-135401_009484_movie_t-1.jpg", "2020-0131-135401_009484_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with stopped truck", "environment_perception": "A narrow urban two-way street with one lane each way and a solid yellow centerline runs between buildings; the pavement is clean and traffic is light but momentarily constrained. A white box truck is stopped directly ahead in the ego lane, blocking the path and holding the ego car. In the opposing lane farther ahead near the intersection, a white minivan approaches, indicating active oncoming traffic. A pedestrian stands on the left sidewalk beside the truck, close to the curb while remaining off the roadway. A small signalized intersection is visible ahead.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The driver should stop because the vehicle directly ahead is stationary in their lane, posing an immediate collision risk if they continue moving."}
{"id": "train_00726", "split": "train", "clip_key": "titan_clip_1209_000390_movie", "source": {"subset": "titan", "scenario": "clip_1209", "frame": "000390"}, "frames": ["titan_clip_1209_000390_movie_t-3.jpg", "titan_clip_1209_000390_movie_t-2.jpg", "titan_clip_1209_000390_movie_t-1.jpg", "titan_clip_1209_000390_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with narrow two-way traffic and paver blocks is shown; the roadway has no median, the surface looks good, and overall flow is light and slow. Ahead in the center of the lane, a pedestrian wearing an orange shirt and carrying a backpack walks away from the ego vehicle along the middle of the road, occupying the ego path. On the right side, an oncoming blue truck approaches slowly in its lane, limiting the available space to pass. Along the left curb near the camera, a white flatbed truck with a yellow tarp is parked and intrudes slightly into the lane, further narrowing the corridor. Farther ahead, a few pedestrians cross the roadway from right to left, and vehicles proceed cautiously.", "hazard_reasoning": "There is a pedestrian wearing an orange shirt, carrying a backpack, walking in the middle of the road, away from the ego car. This pedestrian poses a collision risk due to being on the roadway with limited visibility, so the driver should reduce speed to avoid an accident."}
{"id": "train_00727", "split": "train", "clip_key": "2020-0217-110854_072647_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "072647"}, "frames": ["2020-0217-110854_072647_movie_t-3.jpg", "2020-0217-110854_072647_movie_t-2.jpg", "2020-0217-110854_072647_movie_t-1.jpg", "2020-0217-110854_072647_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes and painted center lines leads to a signalized intersection. The pavement is dry and smooth, and traffic is light to moderate, flowing steadily under a green light. A white truck travels ahead in the ego lane, pulling away through the intersection because the signal is green, and it effectively sets the ego car's pace. To the right, a silver minivan proceeds straight in its lane, slightly ahead and continuing without merging, so it does not impede the ego path. Along the left curb, a larger covered truck is stopped in the left lane, narrowing space near the curb but remaining outside the ego lane. Overhead traffic lights show green for the approach.", "hazard_reasoning": "There is a white truck, driving in the ego lane, in front of and away from the ego-car, because of a green traffic light. Drivers should follow the vehicle ahead to maintain a safe distance and anticipate sudden stops if the signal changes."}
{"id": "train_00728", "split": "train", "clip_key": "2020-0214-102601_026371_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "026371"}, "frames": ["2020-0214-102601_026371_movie_t-3.jpg", "2020-0214-102601_026371_movie_t-2.jpg", "2020-0214-102601_026371_movie_t-1.jpg", "2020-0214-102601_026371_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban boulevard with multiple lanes in each direction and no physical median stretches ahead on smooth pavement, and traffic is heavy and slow with oncoming flow in the right-side lanes. Far ahead in the ego lane, a white box truck slows because of traffic congestion ahead, setting the pace for the lane. Just ahead to the right, a large coach bus in the adjacent lane creeps forward, keeping speeds low alongside the ego vehicle. Ahead to the left, a black sedan in the neighboring lane moves slowly in parallel, limiting room for a lane change. A roadside sign shows 40 km/h.", "hazard_reasoning": "There is a white truck slowing in the ego lane, away from the ego car, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a collision under heavy traffic conditions."}
{"id": "train_00729", "split": "train", "clip_key": "2020-0226-140503_032061_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "032061"}, "frames": ["2020-0226-140503_032061_movie_t-3.jpg", "2020-0226-140503_032061_movie_t-2.jpg", "2020-0226-140503_032061_movie_t-1.jpg", "2020-0226-140503_032061_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban multi-lane intersection with no median and smooth pavement lies ahead, and traffic is light as the ego vehicle approaches in the left lane. Ahead in the ego lane, a small white car continues straight through the junction, loosely setting the pace. On the left curb just beyond the crosswalk, a white box truck is stopped at the roadside, parked at the left side of the road and narrowing the margin. Several pedestrians wait at the left-side corner behind railings near the crosswalk. A posted speed limit of 50 km/h is visible on the left.", "hazard_reasoning": "There is a white truck parked at the left side of the road. The parked truck reduces available lane width and may obstruct the driving path, requiring a careful maneuver to avoid collision."}
{"id": "train_00730", "split": "train", "clip_key": "titan_clip_879_000084_movie", "source": {"subset": "titan", "scenario": "clip_879", "frame": "000084"}, "frames": ["titan_clip_879_000084_movie_t-3.jpg", "titan_clip_879_000084_movie_t-2.jpg", "titan_clip_879_000084_movie_t-1.jpg", "titan_clip_879_000084_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around obstruction", "environment_perception": "A narrow two-way urban street with buildings close to the curb has smooth pavement and light traffic. The ego travels in the left lane. Ahead on the left, a white van is parked in the ego lane while being loaded, reducing the usable width. Farther ahead, a small truck approaches in the opposite lane, coinciding with the obstruction and constraining the gap for passing. A roofed delivery scooter travels ahead in the same direction near the center of the road at low speed, occupying the path beyond the van.", "hazard_reasoning": "There is a white van parked on the left side of the street, in the ego lane, because it is being loaded. This parked van blocks the travel lane and poses a collision risk to both the vehicle and nearby pedestrians, requiring careful maneuvering."}
{"id": "train_00731", "split": "train", "clip_key": "titan_clip_630_000246_movie", "source": {"subset": "titan", "scenario": "clip_630", "frame": "000246"}, "frames": ["titan_clip_630_000246_movie_t-3.jpg", "titan_clip_630_000246_movie_t-2.jpg", "titan_clip_630_000246_movie_t-1.jpg", "titan_clip_630_000246_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban neighborhood street, very narrow two-way with no center divider, runs straight on smooth pavement and carries light traffic with no moving vehicles visible. Two pedestrians on the right side walk toward the camera along the edge of the oncoming lane, briefly stepping into the roadway as they pass the building and may encroach on the travel way. A woman stands on the left at a storefront entrance near the curb, facing the road and close to the edge of the sidewalk. A small side street branches to the right just ahead, and bollards and parked bicycles sit near the corner. No traffic signals or posted speed signs are visible.", "hazard_reasoning": "No hazards are present in the scene; the driver can proceed with normal vigilance."}
{"id": "train_00732", "split": "train", "clip_key": "2020-0228-102841_085600_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "085600"}, "frames": ["2020-0228-102841_085600_movie_t-3.jpg", "2020-0228-102841_085600_movie_t-2.jpg", "2020-0228-102841_085600_movie_t-1.jpg", "2020-0228-102841_085600_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop before the intersection", "environment_perception": "An urban multi-lane arterial with smooth pavement approaches a signalized intersection, and light traffic is momentarily queued at the stop line. A white sedan ahead in the ego lane is stopped for the red light at the intersection, holding the ego vehicle. To the right, a white hatchback in the adjacent lane waits slightly ahead near the crosswalk, limiting an immediate lane change. Directly in front of the sedan, a small three-wheeled scooter waits at the stop line in the ego path. The traffic signal ahead shows red. On the left curb, a parked work truck and cones with barricades mark a small work zone that narrows the shoulder.", "hazard_reasoning": "There is a white sedan stopped in the ego lane because of the red traffic light at the intersection ahead. Stop to avoid a rear-end collision with the stationary vehicle and comply with the traffic signal."}
{"id": "train_00733", "split": "train", "clip_key": "titan_clip_301_000372_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_301_000372_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_301_000372_movie_t-3_augB1.jpg", "titan_clip_301_000372_movie_t-2_augB1.jpg", "titan_clip_301_000372_movie_t-1_augB1.jpg", "titan_clip_301_000372_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single narrow lane each direction is dry and in good condition, and traffic is light but temporarily controlled by a work zone near a small intersection. Directly ahead, a pedestrian traffic controller wearing a cap and reflective vest and holding an orange baton stands before the ego vehicle, signaling a stop because of construction and blocking the lane. On the left edge of the ego lane, a large yellow maintenance truck with cones and a barricade is stationary, with two workers beside it, partially closing the lane. Across the intersection ahead, a teal box truck on the cross street waits under the controller's direction and may proceed before the ego car. A silver minivan is parked along the right curb, further narrowing the approach.", "hazard_reasoning": "There is a pedestrian wearing a cap, black pants, a reflective vest, and holding an orange baton, standing in front of the ego car, because he is directing traffic because of construction work. The pedestrian is directing traffic directly in front of the vehicle, so you must slow down to avoid a collision and obey their instructions."}
{"id": "train_00734", "split": "train", "clip_key": "2020-0214-145407_069285_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "069285"}, "frames": ["2020-0214-145407_069285_movie_t-3.jpg", "2020-0214-145407_069285_movie_t-2.jpg", "2020-0214-145407_069285_movie_t-1.jpg", "2020-0214-145407_069285_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction is separated from oncoming traffic by a raised median with railings, and the straight pavement appears worn as heavy, stop-and-go flow builds. A white sedan directly ahead in the ego lane slows to near a stop in congestion, constraining the ego vehicle's pace. In the adjacent lane to the left, a red hatchback creeps forward in the queue, holding its line alongside the ego vehicle. Farther ahead in the ego lane, a small white box truck leads the line and moves slowly, adding to the bottleneck. Across the median on the right, oncoming cars advance steadily toward the camera. An overhead traffic signal hangs above the intersection ahead.", "hazard_reasoning": "There is a white sedan slowing down in the ego lane, because of traffic congestion. The driver should reduce speed and maintain a safe distance to avoid rear-end collisions."}
{"id": "train_00735", "split": "train", "clip_key": "2020-0226-140503_044075_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "044075"}, "frames": ["2020-0226-140503_044075_movie_t-3.jpg", "2020-0226-140503_044075_movie_t-2.jpg", "2020-0226-140503_044075_movie_t-1.jpg", "2020-0226-140503_044075_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane intersection with no median is ahead; the asphalt appears dry and traffic is moderate with several vehicles near the stop line. An oncoming silver sedan in the right lane drives through the intersection toward the ego car, passing ahead after the crosswalk. An oncoming black SUV in the center lane also proceeds straight through the junction toward us, staying in its lane. A white van ahead on the left side of the ego lane turns left at the intersection, partly occupying the lane and slowing our approach. A box truck is stopped at the curb on the right beyond the intersection beside a construction area, forming a roadside obstruction outside the travel lanes.", "hazard_reasoning": "There is a silver sedan driving through the intersection in the right lane, toward the ego car. The driver should stop immediately because the silver sedan is running the red light and may collide with the ego-vehicle."}
{"id": "train_00736", "split": "train", "clip_key": "2020-0226-140503_081796_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "081796"}, "frames": ["2020-0226-140503_081796_movie_t-3.jpg", "2020-0226-140503_081796_movie_t-2.jpg", "2020-0226-140503_081796_movie_t-1.jpg", "2020-0226-140503_081796_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial with dry, well-kept pavement is divided from the oncoming lanes on the right by a narrow fenced median, and traffic is heavy and mostly stopped. A white sedan directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. Two tall box trucks queue slightly ahead in the lane to the left and creep forward, limiting visibility on that side. Cars in the rightmost same-direction lane roll slowly past the queue and occasionally merge ahead, affecting the ego vehicle's progress.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of traffic congestion ahead. You should stop to avoid a collision as the vehicle ahead has halted unexpectedly due to congestion."}
{"id": "train_00737", "split": "train", "clip_key": "2020-0210-101957_078071_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "078071"}, "frames": ["2020-0210-101957_078071_movie_t-3.jpg", "2020-0210-101957_078071_movie_t-2.jpg", "2020-0210-101957_078071_movie_t-1.jpg", "2020-0210-101957_078071_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban residential scene shows a two-lane, two-way road with a solid center line, gentle right bend, and slight dip over a short bridge with white guardrails; pavement looks smooth and traffic is light with no moving vehicles visible in either direction. A pedestrian stands or walks along the right-side walkway ahead behind the guardrail, moving parallel to the road and not entering the lane. Buildings, walls, and utility poles line both sides, and the curve and roadside walls create partially limited sight lines beyond the bend; no signals or unusual signs are prominent and the lanes appear clear of obstacles.", "hazard_reasoning": "No hazards detected in this scenario; maintain normal driving vigilance."}
{"id": "train_00738", "split": "train", "clip_key": "titan_clip_1389_000438_movie", "source": {"subset": "titan", "scenario": "clip_1389", "frame": "000438"}, "frames": ["titan_clip_1389_000438_movie_t-3.jpg", "titan_clip_1389_000438_movie_t-2.jpg", "titan_clip_1389_000438_movie_t-1.jpg", "titan_clip_1389_000438_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with no median, effectively a narrow two-way road without a marked centerline, has damp pavement and light traffic as the lane bends slightly left past a construction site. A pedestrian in a white T-shirt and blue pants walks away from the ego vehicle along the right edge where there is no sidewalk, staying close to the travel lane and potentially entering it. Another pedestrian farther ahead keeps to the left edge near the fenced work zone and cones, moving in the same direction and posing minimal interaction. Storefront signs and display boards jut from the right, and the left-side construction barriers pinch the roadway but leave a clear path ahead.", "hazard_reasoning": "There's a pedestrian, wearing a white t-shirt and blue pants, walking on the right side of the road, away from the ego car, because there's no sidewalk. The driver should carefully manoeuvre to avoid a collision since the pedestrian is using the roadway without a safe walking path."}
{"id": "train_00739", "split": "train", "clip_key": "2020-0129-105040_074027_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "074027"}, "frames": ["2020-0129-105040_074027_movie_t-3.jpg", "2020-0129-105040_074027_movie_t-2.jpg", "2020-0129-105040_074027_movie_t-1.jpg", "2020-0129-105040_074027_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A quiet suburban residential scene shows a narrow two-way road without a median; the pavement is dry and well kept, and traffic is very light. The ego vehicle is at an intersection with a zebra crossing where the road ahead curves to the right. A small white van is parked far ahead along the right curb near the bend and does not affect the ego lane. No other same-direction or oncoming vehicles or pedestrians are visible. Overhead traffic lights are present above the crossing but not illuminated. Buildings, fences, and utility poles line both sides, and the right-hand curve and nearby structures limit sight beyond the corner.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00740", "split": "train", "clip_key": "2020-0131-135401_011480_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "011480"}, "frames": ["2020-0131-135401_011480_movie_t-3.jpg", "2020-0131-135401_011480_movie_t-2.jpg", "2020-0131-135401_011480_movie_t-1.jpg", "2020-0131-135401_011480_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for the red traffic light.", "environment_perception": "An urban two-way street with one lane per direction and a solid centerline has smooth pavement and light traffic flowing steadily toward a signalized intersection. A white truck ahead in the left-side ego lane slows to a stop for the red light, holding the ego vehicle behind. Several oncoming cars in the right-side lane continue through the junction in the opposite direction without conflict. A few pedestrians move along the left sidewalk, remaining clear of the roadway. An overhead traffic signal is clearly red for the ego approach.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of the red traffic light. The driver should stop for the red traffic light to maintain a safe distance and avoid a collision."}
{"id": "train_00741", "split": "train", "clip_key": "2020-0203-114632_066332_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_066332_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_066332_movie_t-3_augB1.jpg", "2020-0203-114632_066332_movie_t-2_augB1.jpg", "2020-0203-114632_066332_movie_t-1_augB1.jpg", "2020-0203-114632_066332_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of lane change", "environment_perception": "An urban bridge in a built-up area carries smooth, well-marked lanes with a painted median, and traffic is light to moderate and steady. A white truck directly ahead in the ego lane signals and moves to the right lane in front of the ego car, briefly constraining the ego before clearing its path. A dark sedan farther ahead continues straight in the right lane at a steady pace, becoming the vehicle the truck follows. On the opposite side, several oncoming vehicles, including a white truck, approach in their lanes across the median without interaction. A yellow merge warning sign is visible on the left, and high-rise apartments line the roadway.", "hazard_reasoning": "There is a white truck lane changing in front of the ego car, from the ego lane to the right lane. The driver should be aware because the truck's maneuver may encroach on the ego-vehicle's lane space."}
{"id": "train_00742", "split": "train", "clip_key": "2020-0221-115122_025717_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "025717"}, "frames": ["2020-0221-115122_025717_movie_t-3.jpg", "2020-0221-115122_025717_movie_t-2.jpg", "2020-0221-115122_025717_movie_t-1.jpg", "2020-0221-115122_025717_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane road runs under an elevated expressway, with dry pavement and clear markings; traffic is light to moderate and flows steadily. A small white car ahead in the center lane continues at a steady speed in the ego lane and sets the pace. A compact box truck farther ahead to the left proceeds slowly in the left lane near the curb, staying clear of the ego vehicle's path. On the right, a black minivan is stopped at the curb in the right lane, narrowing space there but not affecting the ego lane.", "hazard_reasoning": "No caption provided. There are no visible hazards or unusual conditions; road and traffic are clear, so the driver can proceed normally."}
{"id": "train_00743", "split": "train", "clip_key": "titan_clip_916_000306_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_916_000306_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_916_000306_movie_t-3_augB1.jpg", "titan_clip_916_000306_movie_t-2_augB1.jpg", "titan_clip_916_000306_movie_t-1_augB1.jpg", "titan_clip_916_000306_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the crossing pedestrian.", "environment_perception": "A narrow urban shopping street with a single undivided lane comes into view, with a brick-paved apron leading to smooth asphalt; vehicular traffic is light and no cars are immediately ahead. A pedestrian wearing a white T-shirt and carrying a backpack crosses from the right to the left directly in front of the ego vehicle, walking across the lane and briefly occupying its path. On the right edge, two pedestrians near the storefront move along the curb toward the camera, staying close to the building. Farther ahead, several people on the left side walk away along the roadway margins without crossing. Storefront displays and signs line both sides and slightly narrow the roadside space.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and carrying a backpack, who is crossing the street in front of the ego car, from the right side to the left side of the street. The driver should manoeuvre carefully around the crossing pedestrian to avoid a collision."}
{"id": "train_00744", "split": "train", "clip_key": "titan_clip_25_000192_movie", "source": {"subset": "titan", "scenario": "clip_25", "frame": "000192"}, "frames": ["titan_clip_25_000192_movie_t-3.jpg", "titan_clip_25_000192_movie_t-2.jpg", "titan_clip_25_000192_movie_t-1.jpg", "titan_clip_25_000192_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban shopping street with brick paving leads to a zebra crossing at a cross street; there is no median and vehicle traffic is light while pedestrian activity is high. Ahead in the ego lane, multiple pedestrians walk across the crosswalk from left to right, constraining the ego car's approach. On the right edge near the curb, a pedestrian in a blue shirt pushes a trolley toward the ego vehicle along the lane because pylons block the sidewalk, and he edges into the travel space. Farther ahead beyond the crosswalk, a white car moves across from right to left on the intersecting road without entering the ego lane. Orange cones line the right side as an obstruction.", "hazard_reasoning": "A pedestrian wearing a blue shirt is pushing a trolley along the right side of the lane, toward the ego car, because pylons are blocking the sidewalk. Because the pedestrian is entering the lane unexpectedly, the driver must carefully manoeuvre to avoid a collision."}
{"id": "train_00745", "split": "train", "clip_key": "2020-0227-153144_016543_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "016543"}, "frames": ["2020-0227-153144_016543_movie_t-3.jpg", "2020-0227-153144_016543_movie_t-2.jpg", "2020-0227-153144_016543_movie_t-1.jpg", "2020-0227-153144_016543_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way arterial with wide painted hatchings and no physical median has smooth pavement and a moderate-to-heavy flow that compresses ahead. A white SUV directly ahead in the ego lane slows in response to the queue, constraining the ego vehicle's pace. In the adjacent same-direction lane to the right, a dark van also brakes with the congestion, traveling roughly alongside. On the far right, oncoming cars, including taxis, move toward the camera in their lanes beyond the hatched divider without encroaching. A black sedan sits stopped in a marked bay at the left curb while pedestrians stand along the sidewalks.", "hazard_reasoning": "There is a white SUV slowing down in front of the ego car in the ego lane, because of traffic congestion ahead. Slow down to maintain a safe following distance and adjust to the reduced speed of the vehicle ahead."}
{"id": "train_00746", "split": "train", "clip_key": "2020-0228-102841_049021_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "049021"}, "frames": ["2020-0228-102841_049021_movie_t-3.jpg", "2020-0228-102841_049021_movie_t-2.jpg", "2020-0228-102841_049021_movie_t-1.jpg", "2020-0228-102841_049021_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows a single-lane downhill ramp leading into a tunnel, bordered by concrete walls and railings, with dry smooth pavement and light traffic. A gray van in the ego lane ahead moves away down the ramp and continues into the tunnel, serving as the only lead vehicle. Distant vehicles travel on an elevated roadway to the left but remain separated and irrelevant to the ramp. The tunnel entrance ahead darkens the view and the lane bends gently right, limiting sight of the road beyond.", "hazard_reasoning": "There is a gray van driving in the ego lane, away from the ego car. Entering the darker tunnel can reduce visibility quickly, so the driver should follow the vehicle ahead to maintain safe spacing and adapt to light changes."}
{"id": "train_00747", "split": "train", "clip_key": "titan_clip_265_000210_movie", "source": {"subset": "titan", "scenario": "clip_265", "frame": "000210"}, "frames": ["titan_clip_265_000210_movie_t-3.jpg", "titan_clip_265_000210_movie_t-2.jpg", "titan_clip_265_000210_movie_t-1.jpg", "titan_clip_265_000210_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Be aware of cyclist on left", "environment_perception": "An urban multi-lane two-way road without a median approaches a wide signalized intersection with broad zebra crossings; the pavement is smooth and traffic is moderate, with oncoming vehicles moving through in the right-side lanes. Ahead, a small black car and a white van in the ego's direction continue straight through the junction and set the pace. A pedestrian walks rightward across the near crosswalk ahead of the ego lane, occupying the path through the intersection. There is a cyclist wearing a white shirt standing on the left side of the intersection beside a bicycle, waiting at the curb next to the crosswalk. A posted 30 speed-limit sign is visible on a pole at the left corner.", "hazard_reasoning": "There is a cyclist wearing a white shirt, standing on the left side of the intersection. The driver should be aware of the cyclist as they may enter the roadway unexpectedly, requiring speed adjustment and vigilance."}
{"id": "train_00748", "split": "train", "clip_key": "2020-0225-145150_001337_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "001337"}, "frames": ["2020-0225-145150_001337_movie_t-3.jpg", "2020-0225-145150_001337_movie_t-2.jpg", "2020-0225-145150_001337_movie_t-1.jpg", "2020-0225-145150_001337_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows a narrow two-way street approaching a signalized T-intersection with multiple zebra crossings; the road bends right, has no median, the pavement is clean, and traffic is light. Ahead to the right, a motorcyclist on the cross street travels leftward through the junction and may pass across the ego lane. Near the center by a small booth and railing, a pedestrian stands at the curb beside the crosswalk in front of the ego vehicle. Traffic lights are mounted over the intersection, though the signal aspect is not clear. Low white guardrails, bollards, and a parked bicycle line the sidewalks, and no other moving vehicles are visible.", "hazard_reasoning": "No hazards detected in the scene; traffic and road conditions are normal, so no warning is required."}
{"id": "train_00749", "split": "train", "clip_key": "2020-0220-151845_038014_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "038014"}, "frames": ["2020-0220-151845_038014_movie_t-3.jpg", "2020-0220-151845_038014_movie_t-2.jpg", "2020-0220-151845_038014_movie_t-1.jpg", "2020-0220-151845_038014_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated corridor with two same-direction lanes runs between concrete barriers, the pavement wet and reflective as traffic moves slowly in moderate flow. Directly ahead in the ego lane, a truck with a covered load slows, and the ego car follows its pace. In the adjacent right lane, a gray sedan slightly ahead overtakes and continues forward, limiting opportunities for the ego to change lanes. Farther ahead under the viaduct, several vehicles in the right lane bunch up and proceed slowly.", "hazard_reasoning": "There is a red truck slowing down in front of the ego car. The truck's reduced speed may force the driver to brake suddenly to maintain a safe following distance and avoid a collision, so the driver should slow down under this situation."}
{"id": "train_00750", "split": "train", "clip_key": "titan_clip_132_000570_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_132_000570_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_132_000570_movie_t-3_augB1.jpg", "titan_clip_132_000570_movie_t-2_augB1.jpg", "titan_clip_132_000570_movie_t-1_augB1.jpg", "titan_clip_132_000570_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "A narrow urban commercial street with brick paving and no median runs between shopfronts, with light traffic and reduced width from vehicles at the curb. Directly ahead, a tall pedestrian wearing a black sleeveless jacket and brown pants walks away along the center of the lane, constraining the ego vehicle's pace. On the right edge near the camera, a black minivan is stopped at the curb and intrudes into the lane. Farther ahead in the same direction, a small van stands near the left side of the street, creating a pinch point with the vehicle on the right.", "hazard_reasoning": "There's a tall pedestrian, wearing a black sleeveless jacket and brown pants, walking, in front of the ego car, away from the ego car. The driver should yield because the pedestrian is walking ahead and may enter the vehicle's path unexpectedly."}
{"id": "train_00751", "split": "train", "clip_key": "2020-0129-144857_017827_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "017827"}, "frames": ["2020-0129-144857_017827_movie_t-3.jpg", "2020-0129-144857_017827_movie_t-2.jpg", "2020-0129-144857_017827_movie_t-1.jpg", "2020-0129-144857_017827_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with three lanes in the same direction runs past midrise buildings, bordered by a hedge and wall on the right; the pavement is dry and traffic is moderate and steady. A black boxy minivan proceeds ahead in the ego lane, setting the pace. To the left front, a black hatchback moves right, changing from the left lane into the ego lane behind the minivan and ahead of the ego vehicle. Farther ahead, several cars and a bus continue straight in adjacent lanes with stable gaps. No salient traffic signals are visible, and no hazards or parked vehicles intrude.", "hazard_reasoning": "There is a black hatchback changing lanes, from the left lane to the ego lane. It may cut into your lane unexpectedly, so you should slow down to avoid a collision."}
{"id": "train_00752", "split": "train", "clip_key": "2020-0217-110854_026968_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "026968"}, "frames": ["2020-0217-110854_026968_movie_t-3.jpg", "2020-0217-110854_026968_movie_t-2.jpg", "2020-0217-110854_026968_movie_t-1.jpg", "2020-0217-110854_026968_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the white sedan.", "environment_perception": "An urban tunnel with two same-direction lanes carries light traffic; the pavement is smooth and the ego vehicle proceeds in the right lane toward a bright exit. A large bus ahead in the same lane rolls steadily and occupies the ego vehicle's path, so we follow behind. A white sedan drives alongside in the left lane, keeping pace with the ego car and blocking an immediate lane change to the left.", "hazard_reasoning": "There is a white sedan driving alongside the ego car in the left lane. This sedan may merge into the ego lane unexpectedly, so the driver should be aware of its presence."}
{"id": "train_00753", "split": "train", "clip_key": "2020-0220-151845_053155_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "053155"}, "frames": ["2020-0220-151845_053155_movie_t-3.jpg", "2020-0220-151845_053155_movie_t-2.jpg", "2020-0220-151845_053155_movie_t-1.jpg", "2020-0220-151845_053155_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban corridor under an elevated structure carries a two-lane one-way roadway bounded by concrete barriers; the pavement is dry and traffic moves slowly in a short queue. Ahead in the ego lane, a red pickup truck slows because of congestion ahead and it sets the pace for the ego vehicle. In the adjacent right lane, a silver hatchback slightly ahead rolls at similar low speed, holding its line and not creating a gap to merge. Farther ahead under the viaduct, a dark car in the right lane continues slowly with the same queue. The narrow lanes, high concrete walls, and the overhead structure limit lateral clearance and forward visibility.", "hazard_reasoning": "There is a red pickup truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The pickup's deceleration indicates congested traffic, so the driver should slow down to maintain a safe distance."}
{"id": "train_00754", "split": "train", "clip_key": "2020-0214-102601_072311_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "072311"}, "frames": ["2020-0214-102601_072311_movie_t-3.jpg", "2020-0214-102601_072311_movie_t-2.jpg", "2020-0214-102601_072311_movie_t-1.jpg", "2020-0214-102601_072311_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial in left-hand traffic runs straight with a metal guardrail on the right, smooth pavement, and a moderate, steady flow. Ahead in the ego lane, a black SUV changes right into the diverging lane toward the side road, moving out of the ego path. Slightly farther ahead in the adjacent left lane, a white hatchback continues straight at a similar speed and may set the pace once the SUV departs. Beyond them, a white van in the middle distance proceeds straight with the main stream. The rightmost lane clearly splits off along the guardrail, marked by dashed lines and directional arrows.", "hazard_reasoning": "There is a black SUV in front of the ego car changing to the right lane from the ego lane. Because the SUV is merging into the adjacent lane, the driver should slow down to maintain a safe following distance and avoid a potential collision."}
{"id": "train_00755", "split": "train", "clip_key": "2020-0214-145407_069153_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "069153"}, "frames": ["2020-0214-145407_069153_movie_t-3.jpg", "2020-0214-145407_069153_movie_t-2.jpg", "2020-0214-145407_069153_movie_t-1.jpg", "2020-0214-145407_069153_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between tall buildings; a planted median is on the right and the dry asphalt looks well maintained, while overall traffic is heavy and slow. Ahead in the ego lane, a white sedan slows due to congestion, constraining the ego vehicle's pace. To the left, a line of vehicles including a small white van and a dark sedan creeps forward in the adjacent same-direction lane without merging. Across the median to the right, dense oncoming traffic moves along the opposite carriageway. No unusual signs, work zones, or obstacles are apparent.", "hazard_reasoning": "There is a white sedan slowing down in the ego lane because of the traffic congestion ahead on the road. The traffic congestion ahead may force abrupt deceleration, so the driver should slow down to maintain a safe distance and avoid collision."}
{"id": "train_00756", "split": "train", "clip_key": "2020-0131-103016_011556_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "011556"}, "frames": ["2020-0131-103016_011556_movie_t-3.jpg", "2020-0131-103016_011556_movie_t-2.jpg", "2020-0131-103016_011556_movie_t-1.jpg", "2020-0131-103016_011556_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the lane-changing motorcycle", "environment_perception": "An urban arterial with three same-direction lanes runs between tall buildings, the dry pavement marked by a double white line separating the two right lanes, and traffic flows at a moderate, steady pace. A white hatchback ahead in the ego lane proceeds with the stream, limited by a small van and a box truck farther up. From the right lane, a white motorcycle moves left into the ego lane, merging ahead and briefly narrowing the gap. Another motorcycle travels along the left lane near the curb, continuing forward without entering the ego path. Several cars and a light truck cruise in the adjacent right lanes.", "hazard_reasoning": "There is a white motorcycle changing lanes from the right lane to the ego lane. This unexpected lane change could result in a side-impact collision if not anticipated, so the driver should be aware of the motorcycle merging into the lane."}
{"id": "train_00757", "split": "train", "clip_key": "2020-0226-140503_104497_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "104497"}, "frames": ["2020-0226-140503_104497_movie_t-3.jpg", "2020-0226-140503_104497_movie_t-2.jpg", "2020-0226-140503_104497_movie_t-1.jpg", "2020-0226-140503_104497_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane per direction curves gently right, bounded by a right-side guardrail and storefronts on the left; the dark pavement appears wet and traffic is light. A white box truck directly ahead in the ego lane accelerates away, controlling the ego car's pace. Farther ahead near the left curb, a smaller white truck moves slowly along the edge and may merge into the ego lane. A traffic signal is visible over the intersection ahead.", "hazard_reasoning": "There is a white truck accelerating in front of the ego car, in the ego lane. Since the traffic light is red, the leading vehicle will soon decelerate or stop, so following it helps maintain safe distance and prepare for braking."}
{"id": "train_00758", "split": "train", "clip_key": "titan_clip_558_000336_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_558_000336_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_558_000336_movie_t-3_augB1.jpg", "titan_clip_558_000336_movie_t-2_augB1.jpg", "titan_clip_558_000336_movie_t-1_augB1.jpg", "titan_clip_558_000336_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single shared lane and no divider runs between storefronts; the pavement is smooth and traffic is light. A bicyclist ahead in the center rides away from the camera and effectively sets the pace in the ego path. On the left, a pedestrian wearing a gray shirt and carrying a purse walks toward the ego vehicle in the roadway because another pedestrian is on the left shoulder, and this person may edge further into the lane. On the right edge, another pedestrian ahead walks in the same direction close to the curb, narrowing the usable space for passing. Storefront signs, cones, and stacked items protrude near the curbs and slightly constrict the lane.", "hazard_reasoning": "There is a pedestrian carrying a purse, wearing a gray shirt, and walking on the left side of the road, towards the ego car, because of another pedestrian on the left shoulder. The pedestrian is entering the vehicle's path unexpectedly, increasing collision risk; the driver should slow down to maintain safety."}
{"id": "train_00759", "split": "train", "clip_key": "2020-0207-101955_063652_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "063652"}, "frames": ["2020-0207-101955_063652_movie_t-3.jpg", "2020-0207-101955_063652_movie_t-2.jpg", "2020-0207-101955_063652_movie_t-1.jpg", "2020-0207-101955_063652_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes and a raised median to the right has smooth pavement and moderate traffic that begins moving from a stop. A white hatchback directly ahead in the ego lane pulls away as the light is green, opening a gap from the ego car. Farther ahead in the same lane, a large box truck moves off more slowly and may set the pace. In the adjacent left lane, a blue utility truck and several vans remain slow or stopped near the curb without affecting the ego lane. Overhead lane-use signs show both lanes continue straight, with the right lane also allowing a right turn.", "hazard_reasoning": "There is a white hatchback starting to move in front of, and away from, the ego car, because of a green light. The driver should follow the vehicle ahead promptly to maintain safe spacing and avoid hesitation at the green signal."}
{"id": "train_00760", "split": "train", "clip_key": "2020-0217-110854_046566_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "046566"}, "frames": ["2020-0217-110854_046566_movie_t-3.jpg", "2020-0217-110854_046566_movie_t-2.jpg", "2020-0217-110854_046566_movie_t-1.jpg", "2020-0217-110854_046566_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Start moving", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with dry, well-marked pavement, guardrails at the right shoulder, and light traffic. Ahead in the ego lane, a black van is accelerating away in front of the ego car. A white minivan travels slightly ahead in the left lane at a steady speed, holding its lane so it does not intrude on the ego path. A fenced construction area lines the right side behind the guardrail while trees and a low hedge border the left, and no signals or unusual signs are prominent.", "hazard_reasoning": "There is a black van accelerating in front of the ego car, in the ego lane. Since the leading vehicle is pulling away, the driver should start moving promptly to maintain safe following distance and traffic flow."}
{"id": "train_00761", "split": "train", "clip_key": "titan_clip_1349_000276_movie", "source": {"subset": "titan", "scenario": "clip_1349", "frame": "000276"}, "frames": ["titan_clip_1349_000276_movie_t-3.jpg", "titan_clip_1349_000276_movie_t-2.jpg", "titan_clip_1349_000276_movie_t-1.jpg", "titan_clip_1349_000276_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrian", "environment_perception": "An urban narrow single-lane street without a centerline runs between buildings, the pavement dry and traffic light. A white sedan ahead in the ego lane slows near a junction as a pedestrian wearing a white T-shirt and black pants is in the middle of the road crossing from right to left across the travel path. On the right sidewalk, another pedestrian walks close to the curb parallel to traffic, and a third person stands farther ahead by the curb. A yield sign stands at the junction ahead, and rows of parked scooters line the left behind guardrails.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and black pants, in the middle of the road, crossing the street from the right side of the street to the left side. The pedestrian is stepping into the travel lane and may enter the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_00762", "split": "train", "clip_key": "titan_clip_973_000150_movie", "source": {"subset": "titan", "scenario": "clip_973", "frame": "000150"}, "frames": ["titan_clip_973_000150_movie_t-3.jpg", "titan_clip_973_000150_movie_t-2.jpg", "titan_clip_973_000150_movie_t-1.jpg", "titan_clip_973_000150_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian", "environment_perception": "An urban, very narrow street with a single motor lane approaches a railway underpass with a striped low-clearance beam; the dry pavement is worn and vehicular traffic is light. On the left edge of the lane, a man wearing a gray shirt and black shorts walks away from the vehicle near the carriageway, and may drift into the path. Farther ahead, several pedestrians move under the bridge in the same direction within the lane, constraining the vehicle's pace. Oncoming pedestrians approach along the left-side walkway behind the railing, including one with an umbrella, and remain outside the lane. The low-clearance structure and tight guardrails restrict available space near the underpass.", "hazard_reasoning": "There is a man wearing a gray shirt and black shorts walking away from the ego car on the left side of the road. The pedestrian could step into the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_00763", "split": "train", "clip_key": "2020-0206-101736_088738_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "088738"}, "frames": ["2020-0206-101736_088738_movie_t-3.jpg", "2020-0206-101736_088738_movie_t-2.jpg", "2020-0206-101736_088738_movie_t-1.jpg", "2020-0206-101736_088738_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with two lanes per direction and a low hedge median has smooth pavement, and traffic is moderate and moving slowly. In the left ego lane, a white work truck directly ahead slows, constraining the ego car's pace. Ahead of it, a black passenger car in the same lane creeps forward behind the truck, continuing to block the lane. Farther ahead, another flatbed truck proceeds in the right lane at a similar speed, reducing opportunities to pass.", "hazard_reasoning": "There's a white truck slowing down in front of the ego car. The truck's sudden reduction in speed could require the driver to brake sharply, so slow down to maintain a safe following distance."}
{"id": "train_00764", "split": "train", "clip_key": "titan_clip_1041_000048_movie", "source": {"subset": "titan", "scenario": "clip_1041", "frame": "000048"}, "frames": ["titan_clip_1041_000048_movie_t-3.jpg", "titan_clip_1041_000048_movie_t-2.jpg", "titan_clip_1041_000048_movie_t-1.jpg", "titan_clip_1041_000048_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to cyclist ahead", "environment_perception": "A narrow urban shopping street with no center divider and smooth asphalt carries light, slow traffic. Directly ahead in the middle of the road, a cyclist wearing a white T-shirt and green shorts rides away from the ego car with a black handbag slung, occupying the ego path and setting the pace. Another cyclist farther ahead near the left side proceeds in the same direction close to the storefronts and poses less constraint. On the right edge, a pedestrian walks along the curb beside rows of parked bicycles that tighten the usable lane and create mild roadside clutter. No traffic signals or speed signs are prominent.", "hazard_reasoning": "There is a cyclist wearing a white t-shirt and green shorts, carrying a black handbag, and cycling away from the ego car, in the middle of the road. The cyclist is riding in the center of the lane ahead, requiring the driver to yield to avoid collision."}
{"id": "train_00765", "split": "train", "clip_key": "titan_clip_627_000042_movie", "source": {"subset": "titan", "scenario": "clip_627", "frame": "000042"}, "frames": ["titan_clip_627_000042_movie_t-3.jpg", "titan_clip_627_000042_movie_t-2.jpg", "titan_clip_627_000042_movie_t-1.jpg", "titan_clip_627_000042_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way carriageway lacks a centerline and has green bicycle shoulders on both sides; the pavement looks smooth and motor traffic is light. Ahead in the ego lane, several pedestrians cross from the right toward the left at walking pace, occupying the lane and momentarily dictating the ego vehicle's speed. Among them, a pedestrian dressed entirely in gray crosses to the left side of the road, moving away from the camera and gradually clearing the path. Parked bicycles and storefront displays line the right shoulder, slightly narrowing the roadway near the curb.", "hazard_reasoning": "There is a pedestrian wearing all gray, crossing to the left side of the road, away from the ego car. Because the pedestrian is entering the lane ahead, the driver should slow down to avoid a potential collision."}
{"id": "train_00766", "split": "train", "clip_key": "2020-0228-150133_033814_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "033814"}, "frames": ["2020-0228-150133_033814_movie_t-3.jpg", "2020-0228-150133_033814_movie_t-2.jpg", "2020-0228-150133_033814_movie_t-1.jpg", "2020-0228-150133_033814_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction and a painted median runs straight through low-rise storefronts; the pavement is smooth and traffic stays light and steady. Ahead in the ego lane, a white hatchback drives away at a steady pace, gradually widening the gap while remaining centered in lane. Farther ahead in the adjacent right lane, a few same-direction cars progress smoothly, holding their lanes without affecting the ego path. In the opposite lanes to the right beyond the median, oncoming vehicles move steadily through the corridor with clear separation from the ego lane. Overhead guide signs span the roadway, and no hazards appear.", "hazard_reasoning": "There is a white hatchback driving away from the ego car, in the ego lane. The white hatchback ahead may brake suddenly or change speed, so the driver should follow it at a safe distance to avoid collision."}
{"id": "train_00767", "split": "train", "clip_key": "2020-0228-102841_074851_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "074851"}, "frames": ["2020-0228-102841_074851_movie_t-3.jpg", "2020-0228-102841_074851_movie_t-2.jpg", "2020-0228-102841_074851_movie_t-1.jpg", "2020-0228-102841_074851_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three lanes in the ego direction runs between tall buildings, separated from opposing traffic on the right by a metal fence median. The pavement is smooth and dry, and traffic flows lightly to moderately with vehicles moving at a steady pace. A white van drives ahead in the ego lane, continuing smoothly because the road ahead is clear. To its right, a white sedan travels slightly ahead in the adjacent lane, proceeding parallel and not entering the ego lane. In the left lane, a dark van runs a little ahead, moving steadily in the same direction and effectively pacing the ego vehicle. A small kei van stands parked near the left curb behind the active lanes.", "hazard_reasoning": "There is a white van driving in the ego lane, in front of the ego car, because the road ahead is clear. Follow the vehicle ahead to maintain a safe following distance and anticipate any sudden braking."}
{"id": "train_00768", "split": "train", "clip_key": "titan_clip_167_000360_movie", "source": {"subset": "titan", "scenario": "clip_167", "frame": "000360"}, "frames": ["titan_clip_167_000360_movie_t-3.jpg", "titan_clip_167_000360_movie_t-2.jpg", "titan_clip_167_000360_movie_t-1.jpg", "titan_clip_167_000360_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow two-way urban street with a single lane in each direction has smooth pavement and no median, and traffic is light with no nearby vehicles. Ahead on the right edge of the ego lane, a man in a blue shirt carrying a backpack walks away from the vehicle along the curb, close to the travel path. Slightly farther ahead on the same side, another pedestrian in dark clothing also walks away near the edge, which could constrain pace as the vehicle passes. Bicycles are parked along the left storefront and protrude slightly toward the roadway.", "hazard_reasoning": "There is a man wearing a blue shirt, carrying a backpack, and walking on the right side of the road, away from the ego car. The driver should manoeuvre around the pedestrian to maintain a safe distance and avoid a collision."}
{"id": "train_00769", "split": "train", "clip_key": "titan_clip_506_000090_movie", "source": {"subset": "titan", "scenario": "clip_506", "frame": "000090"}, "frames": ["titan_clip_506_000090_movie_t-3.jpg", "titan_clip_506_000090_movie_t-2.jpg", "titan_clip_506_000090_movie_t-1.jpg", "titan_clip_506_000090_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with no lane markings and smooth asphalt runs between buildings, and traffic is light with no vehicles visible ahead or oncoming. Ahead on the left, two pedestrians walk along the roadway edge because there is no sidewalk, occupying part of the ego path and constraining pace. Farther ahead near the middle of the lane, a small group of pedestrians also proceeds in the same direction, leaving limited clearance. Metal railings and bollards line the right side, and no active signals or posted limits are prominent.", "hazard_reasoning": "There are people walking on the left side road in front of the ego car because there is no sidewalk. The driver should slow down to avoid potential collisions with these pedestrians."}
{"id": "train_00770", "split": "train", "clip_key": "2020-0127-132751_090757_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "090757"}, "frames": ["2020-0127-132751_090757_movie_t-3.jpg", "2020-0127-132751_090757_movie_t-2.jpg", "2020-0127-132751_090757_movie_t-1.jpg", "2020-0127-132751_090757_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A suburban two-way road where the ego travels in the left lane has a narrow raised center strip, dry pavement, and light overall traffic. A blue truck ahead in the ego lane slows, reportedly due to congestion farther along, and it constrains the ego car's pace. A cyclist approaches along the right-side sidewalk toward the camera, parallel to the oncoming lane, and remains off the roadway. Two pedestrians walk ahead on the right sidewalk and another is on the left path, none moving toward the lane. Construction fencing and railway structures line the right edge, narrowing the roadside but not obstructing the lane.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The truck's deceleration indicates reduced traffic flow ahead, so the driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_00771", "split": "train", "clip_key": "2020-0206-101736_065192_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "065192"}, "frames": ["2020-0206-101736_065192_movie_t-3.jpg", "2020-0206-101736_065192_movie_t-2.jpg", "2020-0206-101736_065192_movie_t-1.jpg", "2020-0206-101736_065192_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction is divided from oncoming traffic on the right by a low shrub median; the pavement looks smooth and traffic is heavy, moving slowly. A small gray van directly ahead in the ego lane slows because of congestion and controls the ego vehicle's pace. In the adjacent left lane, a white van slightly ahead proceeds straight at a similar crawl, remaining beside the ego lane. Farther ahead, a queue of trucks and vans in both same-direction lanes alternately creeps and brakes, while oncoming vehicles flow steadily on the opposite side of the median. Overhead blue direction boards provide route guidance and show a distance of 300 m.", "hazard_reasoning": "A gray van is slowing down in the ego lane because of traffic congestion. You should slow down to maintain a safe following distance and avoid rear-ending the vehicle ahead under slowing traffic conditions."}
{"id": "train_00772", "split": "train", "clip_key": "titan_clip_113_000318_movie", "source": {"subset": "titan", "scenario": "clip_113", "frame": "000318"}, "frames": ["titan_clip_113_000318_movie_t-3.jpg", "titan_clip_113_000318_movie_t-2.jpg", "titan_clip_113_000318_movie_t-1.jpg", "titan_clip_113_000318_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street without a centerline runs between close-set buildings, the ego vehicle proceeding along the left side on smooth pavement with very light traffic. Ahead, a pedestrian in a beige shirt walks in the middle of the roadway away from the ego vehicle, occupying the ego path and effectively setting the pace. On the right, another pedestrian moves along the sidewalk near shop signs and keeps to the curb with no immediate interaction. No traffic signals or vehicles are visible, and shopfront displays and bags along the curbsides slightly constrict the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a beige shirt, walking in the middle of the road, away from the ego car. The pedestrian's position in the roadway increases collision risk, so the driver should slow down."}
{"id": "train_00773", "split": "train", "clip_key": "2020-0220-102630_007569_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "007569"}, "frames": ["2020-0220-102630_007569_movie_t-3.jpg", "2020-0220-102630_007569_movie_t-2.jpg", "2020-0220-102630_007569_movie_t-1.jpg", "2020-0220-102630_007569_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban scene unfolds on a three-lane arterial approaching a signalized intersection with smooth pavement and no median; traffic is moderate but halted for a red light. A silver sedan is stopped directly ahead in the ego lane because of the red traffic light, keeping the ego vehicle stationary near the line. To the right, a black van queues in the adjacent lane and remains stopped with the flow. Several pedestrians cross the crosswalk from right to left in front of the waiting vehicles, steadily traversing the ego vehicle's path. Overhead signals show red for the ego direction.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop at the red light to maintain a safe distance and avoid colliding with the halted vehicle."}
{"id": "train_00774", "split": "train", "clip_key": "titan_clip_761_000168_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_761_000168_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_761_000168_movie_t-3_augB1.jpg", "titan_clip_761_000168_movie_t-2_augB1.jpg", "titan_clip_761_000168_movie_t-1_augB1.jpg", "titan_clip_761_000168_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane each direction, no median, smooth pavement, and slow mixed traffic. A large box truck stands along the left curb partly blocking the ego lane, while a green truck and a white car are parked on the right, narrowing the way. A pedestrian in black pants and a white shirt walks away from the ego vehicle in the middle of the road to get around the parked truck, occupying the ego lane. Ahead, a scooter proceeds straight in the same direction at low speed as it filters past the truck, pacing the ego vehicle. Farther ahead near the right curb, another pedestrian crosses the ego lane with shopping bags and a small dog.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, walking in the middle of the road, away from the ego car, because he is walking around the parked truck. The pedestrian's path is unpredictable and obscured by the truck, requiring the driver to slow down to maintain a safe stopping distance."}
{"id": "train_00775", "split": "train", "clip_key": "titan_clip_784_000348_movie", "source": {"subset": "titan", "scenario": "clip_784", "frame": "000348"}, "frames": ["titan_clip_784_000348_movie_t-3.jpg", "titan_clip_784_000348_movie_t-2.jpg", "titan_clip_784_000348_movie_t-1.jpg", "titan_clip_784_000348_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A narrow urban two-way street without a median and with smooth pavement runs between mid-rise buildings, and vehicle traffic appears very light. Ahead on the right side, a cyclist wearing a green shirt travels away along the curb in the ego lane and may constrain the car's pace. Straight ahead in the center of the lane, a pedestrian with a backpack walks away in the roadway, occupying the ego path. To the left near the camera, two pedestrians proceed side by side along the edge, drifting slightly into the lane and close to the vehicle's line. A handcart and a parked bicycle sit on the right curb, reducing lateral space.", "hazard_reasoning": "There is a cyclist wearing a green shirt, traveling away from the ego car. on the right side of the road. The driver should carefully manoeuvre around the cyclist to maintain a safe distance and avoid a potential collision."}
{"id": "train_00776", "split": "train", "clip_key": "titan_clip_1385_000564_movie", "source": {"subset": "titan", "scenario": "clip_1385", "frame": "000564"}, "frames": ["titan_clip_1385_000564_movie_t-3.jpg", "titan_clip_1385_000564_movie_t-2.jpg", "titan_clip_1385_000564_movie_t-1.jpg", "titan_clip_1385_000564_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban side street with shops lines both sides, forming a single undivided lane with smooth asphalt and very light vehicular traffic. A pedestrian in a blue shirt on the right edge pushes a blue trolley toward the ego vehicle along the lane, moving forward in the roadway and potentially entering the ego path. Ahead of the trolley, another pedestrian in white walks across the lane from right to left toward the opposite sidewalk, directly in front of the ego vehicle and likely to constrain its pace. Additional pedestrians linger along the right-hand storefronts close to the curb, facing the road and intermittently edging toward the lane. No traffic signals are visible and no moving vehicles are immediately nearby.", "hazard_reasoning": "A pedestrian wearing a blue shirt is pushing a trolley along the right side of the lane, toward the ego car. Because the pedestrian is entering the vehicle's path, the driver should manoeuvre to avoid a collision."}
{"id": "train_00777", "split": "train", "clip_key": "2020-0206-142535_037787_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "037787"}, "frames": ["2020-0206-142535_037787_movie_t-3.jpg", "2020-0206-142535_037787_movie_t-2.jpg", "2020-0206-142535_037787_movie_t-1.jpg", "2020-0206-142535_037787_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian in crosswalk", "environment_perception": "An urban divided arterial has two lanes in the ego direction on the left and a separated oncoming lane on the right behind metal railings; the asphalt is dry and smooth, and traffic is light to moderate with vehicles paused at a signalized crosswalk. Two pedestrians cross the crosswalk from left to right directly in front of the ego lane, including a woman in a red dress carrying a red handbag, moving steadily and causing the ego vehicle to wait. A small white truck ahead in the left lane is stopped near the crosswalk, constraining the available space. In the oncoming lane to the right, a silver sedan proceeds toward the camera behind the divider.", "hazard_reasoning": "A woman wearing a red dress and carrying a red handbag is crossing the street in a designated crosswalk. The driver should yield and proceed carefully since the pedestrian is already in the crosswalk."}
{"id": "train_00778", "split": "train", "clip_key": "2020-0131-135401_005014_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "005014"}, "frames": ["2020-0131-135401_005014_movie_t-3.jpg", "2020-0131-135401_005014_movie_t-2.jpg", "2020-0131-135401_005014_movie_t-1.jpg", "2020-0131-135401_005014_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with narrow lanes and a low center divider passes between apartment buildings; the pavement is dry and traffic is light. A white box truck is stopped directly ahead in the ego lane, blocking the path and holding the ego vehicle. On the left sidewalk several pedestrians walk away from the camera along the curb, remaining off the roadway. In the oncoming lane to the right, a taxi is pulled over near the curb and sits stationary. An overhead circular sign shows 40. Strong sun glare from the upper right washes part of the view but no other obstacles are apparent.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The driver needs to stop to avoid a rear-end collision with the stationary truck."}
{"id": "train_00779", "split": "train", "clip_key": "2020-0207-151349_086079_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "086079"}, "frames": ["2020-0207-151349_086079_movie_t-3.jpg", "2020-0207-151349_086079_movie_t-2.jpg", "2020-0207-151349_086079_movie_t-1.jpg", "2020-0207-151349_086079_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single lane each direction runs under an elevated expressway toward a signalized intersection; the pavement is dry and traffic is light as the ego car is stopped at the line. A pedestrian wearing black pants and a backpack crosses the zebra crosswalk ahead from right to left toward the left side of the road while the light is red. A silver sedan on the cross street moves rightward across the intersection in front of the ego, dictating the wait. An oncoming truck in the right-side lanes proceeds straight beyond the junction. A no-right-turn sign is posted on the near-right pole.", "hazard_reasoning": "There is a pedestrian wearing black pants and a backpack, crossing at the pedestrian crosswalk to the left side of the road, because of the red light. The driver should stop immediately to yield to the pedestrian and prevent a collision, as the crosswalk is occupied under a red signal."}
{"id": "train_00780", "split": "train", "clip_key": "titan_clip_539_000150_movie", "source": {"subset": "titan", "scenario": "clip_539", "frame": "000150"}, "frames": ["titan_clip_539_000150_movie_t-3.jpg", "titan_clip_539_000150_movie_t-2.jpg", "titan_clip_539_000150_movie_t-1.jpg", "titan_clip_539_000150_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street lined with shops forms a single shared lane with no divider, and the pavement looks smooth with no visible motor traffic. On the left ahead, two pedestrians carrying handbags and wearing white dresses walk away from the ego vehicle along the road edge, keeping near the curb. At the near left, a man stands at a storefront right by the curb, stationary but close to the lane where he may step into the path. Farther ahead in the lane center, another pedestrian walks toward the ego vehicle, likely to determine the passing pace on this tight approach.", "hazard_reasoning": "There are two pedestrians carrying handbags, wearing white dresses, and walking on the left side of the road away from the ego car. The pedestrians walking on the roadway could enter the vehicle's path unexpectedly, so the driver should slow down to reduce collision risk."}
{"id": "train_00781", "split": "train", "clip_key": "titan_clip_956_000378_movie", "source": {"subset": "titan", "scenario": "clip_956", "frame": "000378"}, "frames": ["titan_clip_956_000378_movie_t-3.jpg", "titan_clip_956_000378_movie_t-2.jpg", "titan_clip_956_000378_movie_t-1.jpg", "titan_clip_956_000378_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist ahead", "environment_perception": "A narrow urban two-way street with one lane each direction and no median runs between tall buildings; the pavement looks smooth and traffic is light, though the usable lane narrows ahead. A large box truck is stopped ahead along the left curb with its rear doors open, partially blocking the ego lane and constraining the pace. A person pushing a small handcart emerges from the left sidewalk near the truck and moves slowly across the lane, potentially entering the ego path. A cyclist in a green shirt rides toward the ego along the right side of the road as oncoming traffic, keeping near the curb and potentially passing the truck's nose. Several parked scooters sit along the right curb.", "hazard_reasoning": "There is a cyclist wearing a green shirt cycling on the right side of the road, towards the ego car. The cyclist could move unpredictably into the vehicle's path, so the driver should be aware and maintain a safe distance."}
{"id": "train_00782", "split": "train", "clip_key": "2020-0221-115122_022711_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "022711"}, "frames": ["2020-0221-115122_022711_movie_t-3.jpg", "2020-0221-115122_022711_movie_t-2.jpg", "2020-0221-115122_022711_movie_t-1.jpg", "2020-0221-115122_022711_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs under an elevated expressway, with two lanes in the ego vehicle's direction and a raised planted median separating oncoming lanes; the dry pavement looks smooth and traffic is heavy but beginning to roll. A white hatchback directly ahead in the ego lane pulls away as traffic starts moving, opening a small gap. In the adjacent right lane, a blue hatchback alongside creeps forward and stays in its lane, not merging toward the ego path. Farther ahead in the right lane, a white sedan accelerates gently with the flow while remaining parallel to the ego lane. Overhead blue direction signs span the road.", "hazard_reasoning": "There is a white hatchback driving in front of and away from the ego car, in the ego lane, because traffic has started moving ahead. The driver should start moving promptly to keep pace with traffic and avoid being rear-ended."}
{"id": "train_00783", "split": "train", "clip_key": "titan_clip_511_000186_movie", "source": {"subset": "titan", "scenario": "clip_511", "frame": "000186"}, "frames": ["titan_clip_511_000186_movie_t-3.jpg", "titan_clip_511_000186_movie_t-2.jpg", "titan_clip_511_000186_movie_t-1.jpg", "titan_clip_511_000186_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the unloading truck", "environment_perception": "A narrow urban two-way street without a centerline runs between dense buildings; the pavement looks smooth and traffic is light with no moving vehicles ahead. A gray box truck is stopped along the left curb ahead and unloading, its rear lift down and partially occupying the travel space, which limits clearance for the ego vehicle. A worker stands at the rear of the truck handling goods at the edge of the roadway and could step into the lane. On the right sidewalk a pedestrian with a white umbrella walks forward past storefronts parallel to the ego path and remains off the road. A blue no-parking sign is posted on the left near the loading spot, and several bicycles are parked behind a rail on the right.", "hazard_reasoning": "There is a parked gray truck on the left side of the road which is unloading. The unloading activity partially obstructs the lane, so you should carefully maneuver around it to avoid collision."}
{"id": "train_00784", "split": "train", "clip_key": "titan_clip_793_000510_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_793_000510_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_793_000510_movie_t-3_augB1.jpg", "titan_clip_793_000510_movie_t-2_augB1.jpg", "titan_clip_793_000510_movie_t-1_augB1.jpg", "titan_clip_793_000510_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre around the parked motorcycle", "environment_perception": "A narrow urban two-way street with buildings tight to the curbs is shown; the pavement is smooth with edge lines but no centerline, traffic is light, and the road curves slightly to the right ahead. On the right side near the curb, a white motorcycle is parked and a person stands beside it, partially narrowing the space near the ego vehicle's path. No moving vehicles appear ahead in the same direction or as oncoming traffic. A few orange cones and a utility pole line the right sidewalk near the parked bike but remain off the roadway.", "hazard_reasoning": "There is a white motorcycle parked on the right side of the road. As the vehicle approaches, the parked motorcycle reduces the available roadway width, requiring careful maneuvering to avoid collision."}
{"id": "train_00785", "split": "train", "clip_key": "2020-0212-102546_005867_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "005867"}, "frames": ["2020-0212-102546_005867_movie_t-3.jpg", "2020-0212-102546_005867_movie_t-2.jpg", "2020-0212-102546_005867_movie_t-1.jpg", "2020-0212-102546_005867_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to crossing pedestrians", "environment_perception": "A wide urban intersection with multiple marked lanes and broad zebra crossings comes into view, the pavement smooth and traffic light and slow. A white minivan ahead slightly to the right eases toward the crosswalk and slows, setting the ego vehicle's pace. A group of pedestrians crosses the near crosswalk from the left toward the right, occupying the path across the ego lane. On the far right approach, a dark SUV moves ahead slowly in its own lane and remains separate from the ego vehicle's path.", "hazard_reasoning": "There is a group of pedestrian crossing the street at the pedestrian crossing toward the right side. The driver should yield to avoid endangering pedestrians entering the roadway at the crosswalk."}
{"id": "train_00786", "split": "train", "clip_key": "titan_clip_1265_000186_movie", "source": {"subset": "titan", "scenario": "clip_1265", "frame": "000186"}, "frames": ["titan_clip_1265_000186_movie_t-3.jpg", "titan_clip_1265_000186_movie_t-2.jpg", "titan_clip_1265_000186_movie_t-1.jpg", "titan_clip_1265_000186_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street with edge lines but no center divider has smooth pavement and light traffic. Ahead in the oncoming direction, a cyclist pulling a small cart rides in the middle of the road toward the camera, keeping away from pedestrians walking along the right side of the roadway, and may continue through the ego vehicle's path. To the right ahead, a small group of pedestrians walks in the roadway near the curb, slowing the oncoming cyclist and partially narrowing the passage. Bicycles are parked along the left sidewalk, and bagged trash sits by the right curb but remains outside the travel lane.", "hazard_reasoning": "There is a cyclist pulling a cart and cycling in the middle of the road, towards the ego car, because there are pedestrians walking on the right side of the road. The cyclist's position and direct approach increase collision risk, so the driver should slow down to maintain safety."}
{"id": "train_00787", "split": "train", "clip_key": "titan_clip_212_000426_movie", "source": {"subset": "titan", "scenario": "clip_212", "frame": "000426"}, "frames": ["titan_clip_212_000426_movie_t-3.jpg", "titan_clip_212_000426_movie_t-2.jpg", "titan_clip_212_000426_movie_t-1.jpg", "titan_clip_212_000426_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way side street with no median and smooth asphalt runs between buildings, and traffic is light as the vehicle proceeds toward a brighter cross street ahead. Ahead on the right, a pedestrian in a white shirt and black pants walks away from the ego vehicle along the curb, near but outside the travel path and could drift toward the lane. On the left ahead, a black minivan is parked partly in the ego lane, narrowing the passage and influencing the vehicle's path. Several bicycles and stacked items sit by the right curb behind a tree as static roadside obstacles.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the right side of the road, away from the ego car. Manoeuvre carefully around the pedestrian to avoid collision if they step into the road."}
{"id": "train_00788", "split": "train", "clip_key": "2020-0210-155354_021002_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "021002"}, "frames": ["2020-0210-155354_021002_movie_t-3.jpg", "2020-0210-155354_021002_movie_t-2.jpg", "2020-0210-155354_021002_movie_t-1.jpg", "2020-0210-155354_021002_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction and opposing lanes across a planted median with metal railings; the asphalt looks smooth and dry, and traffic moves at a moderate pace. A white truck in the ego lane ahead drives away from the camera and maintains a steady gap, effectively setting the pace. A silver car slightly ahead in the adjacent right same-direction lane travels parallel and gradually pulls ahead. On the far side of the median, several oncoming cars pass steadily to the right, separated by the barrier and not interacting. No traffic lights or unusual signs are clearly visible, and no obstacles or work zones appear.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The truck ahead may suddenly slow down, so the driver should follow at a safe distance."}
{"id": "train_00789", "split": "train", "clip_key": "2020-0129-144857_073424_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "073424"}, "frames": ["2020-0129-144857_073424_movie_t-3.jpg", "2020-0129-144857_073424_movie_t-2.jpg", "2020-0129-144857_073424_movie_t-1.jpg", "2020-0129-144857_073424_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban divided arterial with two same-direction lanes runs beside a guardrail median, the pavement dry and smooth while traffic is heavy and stop-and-go; oncoming lanes beyond the guardrail show light flow. A white sedan is stopped directly ahead in the ego lane because of traffic congestion ahead, and the ego vehicle queues behind it. A large blue flatbed truck travels just ahead to the left in the adjacent lane, creeping forward and then halting with the jam, partially blocking the forward view. Additional cars in the left lane, including a yellow hatchback and a black car, line up slightly ahead and inch forward parallel to the ego vehicle. Parked vans and small trucks line the far left curb.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Therefore, the driver must stop to avoid colliding with the halted sedan due to congestion."}
{"id": "train_00790", "split": "train", "clip_key": "2020-0226-140503_106095_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "106095"}, "frames": ["2020-0226-140503_106095_movie_t-3.jpg", "2020-0226-140503_106095_movie_t-2.jpg", "2020-0226-140503_106095_movie_t-1.jpg", "2020-0226-140503_106095_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with left-hand traffic has a single through lane in the ego direction, bordered by a low shrub median and a bus-bay shoulder; the pavement is dry and smooth, and overall flow is light to moderate. A silver truck immediately ahead in the ego lane slows and leads the queue, constraining the ego vehicle's pace. In the left bus bay a white van stands near the curb, not moving in the lane. Beyond the median to the right, oncoming cars proceed steadily. No signals are prominent and no obstacles encroach on the lane.", "hazard_reasoning": "There is a silver truck slowing in front of the ego car, in the ego lane. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_00791", "split": "train", "clip_key": "2020-0226-140503_070133_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "070133"}, "frames": ["2020-0226-140503_070133_movie_t-3.jpg", "2020-0226-140503_070133_movie_t-2.jpg", "2020-0226-140503_070133_movie_t-1.jpg", "2020-0226-140503_070133_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the white van beside you", "environment_perception": "An urban arterial with three lanes in the ego vehicle's direction runs straight between mid-rise buildings, separated from oncoming traffic by a metal median fence. The pavement is dry and in good condition, and traffic moves at a moderate, steady flow. To the right of the ego, a white van in the adjacent lane is being overtaken as the ego gradually pulls ahead, with the van holding its lane. Ahead in the ego lane, a small white car cruises steadily and maintains a gap, loosely setting the pace. Farther ahead to the left, a boxy white van continues straight within the left lane without affecting the ego. Oncoming vehicles beyond the fence proceed smoothly in the opposite lanes.", "hazard_reasoning": "There's a white van in the lane to the right of the ego-car, which the ego-car is overtaking. The van may shift into your lane without warning, so you should be aware of its position to avoid a collision."}
{"id": "train_00792", "split": "train", "clip_key": "2020-0207-101955_113044_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "113044"}, "frames": ["2020-0207-101955_113044_movie_t-3.jpg", "2020-0207-101955_113044_movie_t-2.jpg", "2020-0207-101955_113044_movie_t-1.jpg", "2020-0207-101955_113044_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway runs through a covered tunnel with two same-direction lanes, concrete walls and guardrails, smooth dry pavement, and heavy stop-and-go traffic. The blue sedan directly ahead in the ego lane slows and creeps forward because congestion builds ahead, constraining the ego vehicle's pace. In the adjacent right lane, a white hatchback slightly ahead proceeds slowly parallel to the ego vehicle while staying in its lane. Farther ahead near the tunnel opening, a line of trucks and vans in both lanes brakes and bunches up, creating the visible backup. No prominent traffic signals or speed signs are visible.", "hazard_reasoning": "There is a blue sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of the vehicle ahead."}
{"id": "train_00793", "split": "train", "clip_key": "titan_clip_815_000408_movie", "source": {"subset": "titan", "scenario": "clip_815", "frame": "000408"}, "frames": ["titan_clip_815_000408_movie_t-3.jpg", "titan_clip_815_000408_movie_t-2.jpg", "titan_clip_815_000408_movie_t-1.jpg", "titan_clip_815_000408_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban two-way street with one narrow lane in each direction, no median, and clean asphalt shows light traffic with no oncoming vehicles present. Ahead in the ego lane on the left, a gray delivery truck is stopped while being unloaded, blocking the lane and constraining the ego's path. A delivery worker stands at the rear of the truck handling crates in the roadway near the centerline, close to the ego path. On the left sidewalk, several pedestrians pass the storefronts near the truck without entering the road. A zebra crossing spans the road just beyond the truck at a side-street junction, and metal railings and a construction wall line the edges.", "hazard_reasoning": "There is a gray trucked parked in the ego lane, on the left side of the road, because it's being unloaded. You should carefully manoeuvre around the truck because it obstructs the lane and reduces visibility ahead."}
{"id": "train_00794", "split": "train", "clip_key": "2020-0228-102841_094400_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "094400"}, "frames": ["2020-0228-102841_094400_movie_t-3.jpg", "2020-0228-102841_094400_movie_t-2.jpg", "2020-0228-102841_094400_movie_t-1.jpg", "2020-0228-102841_094400_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to maintain a safe following distance", "environment_perception": "An urban two-way road with one lane per direction, separated by a solid yellow centerline, approaches a signalized intersection; the pavement is dry and smooth, and traffic is heavy with queues in both directions. A white sedan directly ahead in the ego lane is stopped due to congestion ahead, constraining the ego car's pace. To the right, several oncoming vans and a box truck line up in their lane and creep forward, remaining on the opposing side. On the left sidewalk, a couple of pedestrians stand near the corner without stepping into the road.", "hazard_reasoning": "There is a white sedan car stopped in front of the ego car because of the traffic congestion ahead. The driver should stop to maintain a safe following distance and avoid potential collisions due to sudden halts."}
{"id": "train_00795", "split": "train", "clip_key": "2020-0204-150838_071555_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "071555"}, "frames": ["2020-0204-150838_071555_movie_t-3.jpg", "2020-0204-150838_071555_movie_t-2.jpg", "2020-0204-150838_071555_movie_t-1.jpg", "2020-0204-150838_071555_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway passes under elevated ramps, with two same-direction lanes and a concrete barrier on the right; the dry pavement looks smooth and traffic is moderate to heavy with many trucks. Ahead in the ego lane, a red container truck drives away from the ego car, maintaining course and effectively setting the lane's pace. To the left, a white box truck runs slightly ahead in the adjacent lane at similar speed, limiting opportunities to change lanes. Farther left, several large trucks form a slower queue, keeping that lane dense and moving steadily. No signals or unusual signs stand out, and no obstacles appear near the ego vehicle.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00796", "split": "train", "clip_key": "2020-0220-151845_001732_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "001732"}, "frames": ["2020-0220-151845_001732_movie_t-3.jpg", "2020-0220-151845_001732_movie_t-2.jpg", "2020-0220-151845_001732_movie_t-1.jpg", "2020-0220-151845_001732_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes and no median runs between mid-rise buildings; the pavement is dry and traffic is slow, queued at a signal. A green city bus directly ahead in the ego lane is stopped at a red light, so the ego car waits behind it. To the right, two black taxis in the adjacent lane are slightly ahead and move slowly with the queue, potentially passing the bus while staying in their lane. Farther ahead in that lane, more cars line up before the intersection. Traffic lights are visible above the junction and show red for the ego's approach.", "hazard_reasoning": "There is a green bus stopped in front of the ego car, because of a red traffic light. The bus has halted at the red signal, so the driver must stop to maintain a safe distance and avoid a collision."}
{"id": "train_00797", "split": "train", "clip_key": "titan_clip_1058_000072_movie", "source": {"subset": "titan", "scenario": "clip_1058", "frame": "000072"}, "frames": ["titan_clip_1058_000072_movie_t-3.jpg", "titan_clip_1058_000072_movie_t-2.jpg", "titan_clip_1058_000072_movie_t-1.jpg", "titan_clip_1058_000072_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each way, no median, and smooth pavement; traffic is light as the ego vehicle proceeds in the left lane. Parked vehicles line the left curb near and ahead, including a gray mid-size SUV that protrudes slightly and narrows the usable lane. A white minivan ahead in the same direction moves slowly up the road, constraining the ego vehicle's pace. On the right sidewalk, a pedestrian walks away from the camera near the curb but stays off the roadway.", "hazard_reasoning": "There is a gray mid-SUV parked on the left side of the road. This parked vehicle reduces available lane width and may unpredictably re-enter traffic, so the driver should slow down to navigate safely."}
{"id": "train_00798", "split": "train", "clip_key": "2020-0210-101957_057500_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "057500"}, "frames": ["2020-0210-101957_057500_movie_t-3.jpg", "2020-0210-101957_057500_movie_t-2.jpg", "2020-0210-101957_057500_movie_t-1.jpg", "2020-0210-101957_057500_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction passes under a pedestrian footbridge; the pavement looks smooth and traffic is heavy and slow. Immediately ahead in the ego lane, a white hatchback is stopped because of congestion, holding the ego vehicle. Just beyond it in the same lane, a blue construction truck is also stationary as part of the queue, further blocking the path. In the adjacent right lane, several cars creep forward past the jam, maintaining a slow flow that contrasts with the standstill in the ego lane.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid rear-ending the stationary vehicle."}
{"id": "train_00799", "split": "train", "clip_key": "titan_clip_716_000096_movie", "source": {"subset": "titan", "scenario": "clip_716", "frame": "000096"}, "frames": ["titan_clip_716_000096_movie_t-3.jpg", "titan_clip_716_000096_movie_t-2.jpg", "titan_clip_716_000096_movie_t-1.jpg", "titan_clip_716_000096_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban backstreet with a narrow two-way single lane, no median, and worn but intact pavement shows light traffic as the car proceeds between shops, railings, and cones. A bicyclist ahead near the center of the lane rides away slowly, remaining in the ego path and setting the pace. A pedestrian wearing a white shirt steps from the right side into the middle of the road and crosses toward the ego vehicle mid-block because there is no crosswalk, briefly intruding into the lane. Another pedestrian stands at the left edge by orange cones, holding position and not entering the roadway. A blue no-parking sign is posted on the left, and parked bicycles and bags of trash line the sides.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, crossing the street in the middle of the road, towards the ego car, because there is no crosswalk. The driver should slow down to yield to the pedestrian crossing unexpectedly and avoid collision."}
{"id": "train_00800", "split": "train", "clip_key": "2020-0203-154554_066640_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "066640"}, "frames": ["2020-0203-154554_066640_movie_t-3.jpg", "2020-0203-154554_066640_movie_t-2.jpg", "2020-0203-154554_066640_movie_t-1.jpg", "2020-0203-154554_066640_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with a painted hatched median runs straight under bare trees; pavement appears slightly worn and traffic is moderate, moving but bunched. A black motorcycle is directly ahead in the ego lane, slowing because of congestion ahead and setting the ego car's pace. A small white van just ahead on the left hugs the curb and creeps forward near the lane, possibly merging into the ego path and further compressing gaps. Farther ahead in the same direction, a darker minivan proceeds slowly with the queue. Oncoming cars travel to the right beyond the painted median and remain separate from the ego lane. A blue overhead direction sign and a pedestrian footbridge span the road, and pedestrians walk along both sidewalks behind guardrails.", "hazard_reasoning": "There is a black motorcycle slowing down in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance due to reduced speeds caused by the congestion."}
{"id": "train_00801", "split": "train", "clip_key": "2020-0207-151349_062244_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "062244"}, "frames": ["2020-0207-151349_062244_movie_t-3.jpg", "2020-0207-151349_062244_movie_t-2.jpg", "2020-0207-151349_062244_movie_t-1.jpg", "2020-0207-151349_062244_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid rear-end collision.", "environment_perception": "An urban arterial with two lanes in the ego direction and smooth dark asphalt runs alongside a curb-protected bicycle lane and sidewalk on the left; traffic is heavy and largely stopped. A silver sedan directly ahead in the ego lane is stopped because of congestion, blocking the ego vehicle's path. In the adjacent right lane, a large box truck farther ahead remains nearly stationary, adding to the queue and limiting passing options. Immediately to the right, a small white flatbed truck carrying construction equipment is stopped alongside within its lane. A yellow diamond warning sign is visible ahead.", "hazard_reasoning": "There is a silver sedan car stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid a rear-end collision with the stationary vehicle ahead under these slowing conditions."}
{"id": "train_00802", "split": "train", "clip_key": "2020-0131-135401_072706_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "072706"}, "frames": ["2020-0131-135401_072706_movie_t-3.jpg", "2020-0131-135401_072706_movie_t-2.jpg", "2020-0131-135401_072706_movie_t-1.jpg", "2020-0131-135401_072706_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane arterial with at least three lanes in the ego direction runs between mid-rise buildings; the pavement is dry and smooth, and traffic is heavy and largely stopped. A black hatchback directly ahead in the ego lane is stopped because congestion blocks the way and it holds the ego car at a standstill. To the right, a silver van alongside creeps forward in its lane, leaving little room to merge right. In the left lane ahead, a white car edges along with the queue, preventing an easy pass on that side. Farther ahead, trucks and cars pack the lanes with slow stop-and-go movement. An overhead blue gantry sign displays lane arrows indicating several through lanes and a right-turn lane ahead.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Driver should stop to maintain a safe following distance and avoid colliding with the stationary vehicle."}
{"id": "train_00803", "split": "train", "clip_key": "2020-0228-150133_055082_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "055082"}, "frames": ["2020-0228-150133_055082_movie_t-3.jpg", "2020-0228-150133_055082_movie_t-2.jpg", "2020-0228-150133_055082_movie_t-1.jpg", "2020-0228-150133_055082_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision.", "environment_perception": "An urban multi-lane road with smooth pavement and painted chevron islands carries moderate traffic that compresses ahead near an intersection. A black sedan directly ahead in the ego lane slows because of congestion in front, constraining the ego car's pace. To the left, a white hatchback in the adjacent lane proceeds straight at a similar speed, remaining in its lane and not entering the ego path. On the right, a dark SUV travels parallel in the neighboring lane and continues straight without merging. Overhead direction signs are visible above the roadway.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane in front of the ego car, because of traffic congestion ahead. Drivers should slow down to maintain a safe following distance and avoid a rear-end collision with the slowing vehicle."}
{"id": "train_00804", "split": "train", "clip_key": "2020-0129-105040_081395_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "081395"}, "frames": ["2020-0129-105040_081395_movie_t-3.jpg", "2020-0129-105040_081395_movie_t-2.jpg", "2020-0129-105040_081395_movie_t-1.jpg", "2020-0129-105040_081395_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban residential two-way road with one lane each direction and a solid yellow centerline runs straight, the pavement looks smooth, and traffic is light. Ahead in the ego lane, a cyclist in a black jacket rides away along the left edge because there is no bicycle lane, and the rider may constrain the ego vehicle when passing. A black van is parked at the left curb near the camera, reducing the shoulder space. No oncoming vehicles are visible, and the rest of the roadway ahead appears open.", "hazard_reasoning": "There is a cyclist wearing a black jacket, cycling on the left side of the road away from the ego car, because there is no bicycle lane. The driver should manoeuvre carefully around the cyclist to maintain a safe distance and avoid collision."}
{"id": "train_00805", "split": "train", "clip_key": "titan_clip_402_000378_movie", "source": {"subset": "titan", "scenario": "clip_402", "frame": "000378"}, "frames": ["titan_clip_402_000378_movie_t-3.jpg", "titan_clip_402_000378_movie_t-2.jpg", "titan_clip_402_000378_movie_t-1.jpg", "titan_clip_402_000378_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "A narrow urban two-way street with a single lane each direction and block-paved surface has no median and light, slow-moving traffic. An oncoming white van ahead travels near the center to pass roadside parking, reducing space in the ego lane. On the left edge close to the ego, a man carrying bags walks along the curb toward the camera, very near the travel lane. On the right, a parked flatbed truck with a yellow tarp and, farther ahead, a white van parked at the curb narrow the corridor.", "hazard_reasoning": "There is a white van parked on the right side of the road. The parked van restricts visibility and may force the vehicle to deviate from its lane, increasing collision risk, so the driver must carefully maneuver around it."}
{"id": "train_00806", "split": "train", "clip_key": "2020-0228-150133_048030_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "048030"}, "frames": ["2020-0228-150133_048030_movie_t-3.jpg", "2020-0228-150133_048030_movie_t-2.jpg", "2020-0228-150133_048030_movie_t-1.jpg", "2020-0228-150133_048030_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with buildings on both sides is divided from oncoming traffic by a painted median with double white lines; the dry pavement carries heavy stop-and-go flow, and the left lane tapers into the ego lane. A black sedan immediately ahead in the ego lane is stopped because of traffic congestion ahead, holding the ego vehicle. To the left, a white hatchback in the ending lane creeps rightward to merge into the ego lane and may enter our path. Farther ahead in the same merging lane, a boxy silver van inches toward the ego lane, further constraining available gaps. Oncoming vehicles move slowly on the opposite side of the divider.", "hazard_reasoning": "A black sedan is stopped in the ego lane, because of traffic congestion ahead. The driver must stop to avoid a rear-end collision with the halted vehicle."}
{"id": "train_00807", "split": "train", "clip_key": "titan_clip_440_000456_movie", "source": {"subset": "titan", "scenario": "clip_440", "frame": "000456"}, "frames": ["titan_clip_440_000456_movie_t-3.jpg", "titan_clip_440_000456_movie_t-2.jpg", "titan_clip_440_000456_movie_t-1.jpg", "titan_clip_440_000456_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street with interlocking brick pavement has no marked centerline; vans and a box truck are parked along the left, narrowing the carriageway, and there are no moving vehicles, so traffic is light. A pedestrian wearing a blue dress and carrying a handbag walks along the right side toward the ego vehicle, approaching its path. Another pedestrian ahead near the middle of the roadway walks toward the ego car, occupying the lane and reducing the available space. A man by a doorway on the right proceeds along the sidewalk toward the camera while another person stands nearby using a phone. No salient signals or posted speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue dress, carrying a handbag, walking on the right side of the road, towards the ego car. The pedestrian's path brings them into the vehicle's lane, so the driver should manoeuvre carefully around the pedestrian to maintain safety."}
{"id": "train_00808", "split": "train", "clip_key": "titan_clip_637_000120_movie", "source": {"subset": "titan", "scenario": "clip_637", "frame": "000120"}, "frames": ["titan_clip_637_000120_movie_t-3.jpg", "titan_clip_637_000120_movie_t-2.jpg", "titan_clip_637_000120_movie_t-1.jpg", "titan_clip_637_000120_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban neighborhood street is a narrow two-way road with no median and smooth asphalt dotted with manhole covers; traffic is light with no moving vehicles nearby. A pedestrian in a striped shirt with a backpack walks toward the ego-vehicle along the right edge, moving off the shoulder because another person is on the right side, so he edges into the lane and may affect the ego path. Another pedestrian stands on the right shoulder near a parking-lot entrance, constricting space along the curb. On the left foreground, a man waits at the curb by a side street close to the travel way. Parked cars and signboards line the right, and buildings create a gentle right bend ahead.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt, carrying a backpack, and walking on the right side of the road, towards the ego-car, because of another pedestrian on the right shoulder. The pedestrian may step into the lane unexpectedly, so the driver should manoeuvre carefully around the pedestrian."}
{"id": "train_00809", "split": "train", "clip_key": "2020-0227-153144_034228_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "034228"}, "frames": ["2020-0227-153144_034228_movie_t-3.jpg", "2020-0227-153144_034228_movie_t-2.jpg", "2020-0227-153144_034228_movie_t-1.jpg", "2020-0227-153144_034228_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to maintain safe distance.", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy, slow traffic, and vehicles in all visible lanes are largely stopped near a signalized intersection. A white van directly ahead in the ego lane is stopped amid congestion, holding the ego vehicle. To the left, a black minivan slightly ahead also waits in its lane with little space, constraining any leftward maneuver. On the right, a white van in the adjacent lane creeps forward beside the ego path and could edge into the ego lane when a gap appears. Overhead traffic lights ahead display red, and roadside signage shows a no U-turn restriction, reinforcing the queue at the intersection.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_00810", "split": "train", "clip_key": "2020-0212-150403_000567_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "000567"}, "frames": ["2020-0212-150403_000567_movie_t-3.jpg", "2020-0212-150403_000567_movie_t-2.jpg", "2020-0212-150403_000567_movie_t-1.jpg", "2020-0212-150403_000567_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road approaches a signalized intersection; three same-direction lanes run ahead with clean pavement, and traffic is moderate but stopped at the signal. A black sedan directly ahead in the ego lane is stationary for the red light, constraining the ego car. In the lane to the right, a gold hatchback and a white van queue alongside, inching forward and keeping the ego vehicle boxed in. Farther right, additional same-direction cars wait in line. Overhead traffic lights show red, and a posted 50 speed limit sign is visible on the gantry.", "hazard_reasoning": "There is a black sedan stopped in the ego lane in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe distance and obey the red light."}
{"id": "train_00811", "split": "train", "clip_key": "2020-0213-143552_079010_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "079010"}, "frames": ["2020-0213-143552_079010_movie_t-3.jpg", "2020-0213-143552_079010_movie_t-2.jpg", "2020-0213-143552_079010_movie_t-1.jpg", "2020-0213-143552_079010_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two same-direction lanes curves gently left beside a tall sound barrier, with a guardrail on the right and dry, smooth pavement. Traffic is light throughout. Far ahead in the ego lane, a black truck proceeds straight and gradually increases its gap, continuing along the curve because the road ahead is clear and it does not constrain the ego car. No other nearby road users or salient signals are visible.", "hazard_reasoning": "There is a black truck driving in the ego lane, away from the ego car, because the road ahead is clear. Follow the vehicle ahead at a safe distance to anticipate any sudden braking by the truck."}
{"id": "train_00812", "split": "train", "clip_key": "2020-0220-102630_023551_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "023551"}, "frames": ["2020-0220-102630_023551_movie_t-3.jpg", "2020-0220-102630_023551_movie_t-2.jpg", "2020-0220-102630_023551_movie_t-1.jpg", "2020-0220-102630_023551_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban multi-lane street with left-side driving passes between mid-rise buildings; the dry pavement looks intact and traffic is heavy and slow-moving. A gray box truck directly ahead in the ego lane slows to a crawl due to congestion ahead, setting the pace for the ego car. In the adjacent right lane, a white box truck slightly ahead creeps forward in parallel, leaving little room for a lane change. On the immediate right beside the ego, a small tarpaulin-covered truck moves slowly and close, further tightening lateral space. A sidewalk with a metal railing and parked bicycles lines the left edge.", "hazard_reasoning": "There is a gray truck slowing down in front of the ego car, due to traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid collisions."}
{"id": "train_00813", "split": "train", "clip_key": "titan_clip_850_000336_movie", "source": {"subset": "titan", "scenario": "clip_850", "frame": "000336"}, "frames": ["titan_clip_850_000336_movie_t-3.jpg", "titan_clip_850_000336_movie_t-2.jpg", "titan_clip_850_000336_movie_t-1.jpg", "titan_clip_850_000336_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around cyclist", "environment_perception": "A narrow urban shopping street with stone block pavement lacks lane markings or a divider, functioning as a shared space with heavy pedestrian activity and light vehicle flow. Ahead in the center, a rickshaw-style pedicab travels slowly toward the ego vehicle, occupying much of the roadway and reducing passing space. On the right side, a cyclist in black pants and a gray sweater rides toward the ego car because there is no bicycle lane, likely to pass close to its path. Multiple pedestrians ahead and along both sides cross or walk in the roadway, intermittently entering the path and constraining speed. Shopfront displays line the left, further tightening clearance.", "hazard_reasoning": "There is a cyclist wearing black pants and a gray sweater, cycling toward the ego car on the right side of the road, because there is no bicycle lane. The driver should carefully manoeuvre around the cyclist to maintain safe distance and avoid a collision."}
{"id": "train_00814", "split": "train", "clip_key": "2020-0228-150133_001331_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "001331"}, "frames": ["2020-0228-150133_001331_movie_t-3.jpg", "2020-0228-150133_001331_movie_t-2.jpg", "2020-0228-150133_001331_movie_t-1.jpg", "2020-0228-150133_001331_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban commercial street with one lane in each direction and no median is shown, the pavement dry and narrow with light traffic. The ego-vehicle waits in the left lane near a crosswalk. A white box truck directly ahead in the ego lane is stopped, constraining the ego car, because pedestrians are crossing in front of it. A steady stream of pedestrians moves right to left across the crosswalk ahead, including a stroller, keeping the lane blocked. A traffic signal at the intersection is visible on the right.", "hazard_reasoning": "There is a white semi truck stopped in front of the ego car in the ego lane, because of pedestrians on the crosswalk ahead. You must stop to avoid hitting the pedestrians and the stopped truck."}
{"id": "train_00815", "split": "train", "clip_key": "2020-0228-102841_063844_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "063844"}, "frames": ["2020-0228-102841_063844_movie_t-3.jpg", "2020-0228-102841_063844_movie_t-2.jpg", "2020-0228-102841_063844_movie_t-1.jpg", "2020-0228-102841_063844_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with midrise buildings, the ego travels in a narrow single lane bordered by orange bollards and low planted medians; the pavement looks smooth and traffic is light with no oncoming vehicles visible. A white van ahead in the ego lane steadily pulls away as the road ahead is clear, increasing the gap to the ego vehicle. On the left sidewalk a pedestrian walks forward near the guardrail and remains off the roadway. A blue pedestrian crossing warning sign is posted above the lane, and the bollards create a constrained but unobstructed corridor.", "hazard_reasoning": "There's a white van driving away from the ego car in the ego lane, because the road ahead is clear. The cones indicate possible road construction or obstructions, so the driver should follow the vehicle ahead to maintain a safe path through the area."}
{"id": "train_00816", "split": "train", "clip_key": "titan_clip_406_000090_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_406_000090_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_406_000090_movie_t-3_augB1.jpg", "titan_clip_406_000090_movie_t-2_augB1.jpg", "titan_clip_406_000090_movie_t-1_augB1.jpg", "titan_clip_406_000090_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane and paver blocks runs between shops, lined by bollards; traffic is light and slow. Ahead in the ego lane a white delivery truck is stopped or creeping while a worker handles crates behind it, narrowing the passage and governing the ego vehicle's pace. On the left side of the road, a pedestrian in a white T-shirt walks toward the ego vehicle to pass the parked truck and may enter the ego path. Along the right edge several pedestrians walk near the curb by the bollards, one edging slightly toward the lane but keeping to the side. No traffic signals are visible, and the main constraint is the loading activity and tight clearance.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and walking on the left side of the road, towards the ego car, because of the parked vehicle. The driver should slow down to prevent a collision with the pedestrian stepping into the lane from behind the obstruction."}
{"id": "train_00817", "split": "train", "clip_key": "titan_clip_974_000240_movie", "source": {"subset": "titan", "scenario": "clip_974", "frame": "000240"}, "frames": ["titan_clip_974_000240_movie_t-3.jpg", "titan_clip_974_000240_movie_t-2.jpg", "titan_clip_974_000240_movie_t-1.jpg", "titan_clip_974_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way street approaches a level railway crossing with narrow lanes, no median, and smooth pavement; vehicle traffic is light while pedestrian flow is heavy across the tracks. Several pedestrians cross directly ahead from both sides over the rails, walking through the ego lane and constraining any approach to the crossing. Just beyond the tracks, a pedestrian in a white shirt carrying a handbag walks away from the ego in the middle of the road, remaining in the vehicle's path. On the right side near the rails, another pedestrian advances toward the crossing and may enter the lane. A dark minivan sits ahead near the left curb beyond the crossing, partially occluded by buildings. Railway crossing masts with warning lights and gates flank the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, walking in the middle of the road, away from the ego car, because the sidewalk is crowded. The driver should stop to avoid colliding with the pedestrian crossing the road."}
{"id": "train_00818", "split": "train", "clip_key": "titan_clip_5_000480_movie", "source": {"subset": "titan", "scenario": "clip_5", "frame": "000480"}, "frames": ["titan_clip_5_000480_movie_t-3.jpg", "titan_clip_5_000480_movie_t-2.jpg", "titan_clip_5_000480_movie_t-1.jpg", "titan_clip_5_000480_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban side street with brick pavement and no median is lined by buildings, and traffic is light and slow as the single lane is tight. A small white van or mini-truck travels ahead in the ego lane, moving away and setting a gentle pace. A white van is stopped along the left edge near the ego vehicle, narrowing the usable lane. On the right side of the road, a pedestrian wearing black overalls walks away from the ego car along the curb. Farther ahead at the right edge, a worker stands beside a blue handcart partially on the roadway, close to the ego path.", "hazard_reasoning": "There is a pedestrian wearing black overalls, walking on the right side of the road, away from the ego car. The pedestrian may unexpectedly change direction or step into the lane, so the driver should carefully manoeuvre around them to maintain a safe distance."}
{"id": "train_00819", "split": "train", "clip_key": "2020-0203-114632_013404_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "013404"}, "frames": ["2020-0203-114632_013404_movie_t-3.jpg", "2020-0203-114632_013404_movie_t-2.jpg", "2020-0203-114632_013404_movie_t-1.jpg", "2020-0203-114632_013404_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way road with one lane each direction has no median, smooth pavement, and light traffic in the ego lane while oncoming flow is moderate. A red three-wheeled scooter approaches in the oncoming lane at the right side, moving steadily toward the camera and briefly narrowing space near the center line. Farther ahead in the oncoming stream, a black van followed by a white box truck advances slowly toward the camera, keeping a continuous line of opposing traffic. On the left sidewalk, several pedestrians walk along the railing, remaining off the roadway.", "hazard_reasoning": "There is a white van parked on the left side of the road, because it is being loaded. The parked van obstructs the lane, so the driver should carefully manoeuvre around it to avoid a collision."}
{"id": "train_00820", "split": "train", "clip_key": "titan_clip_180_000564_movie", "source": {"subset": "titan", "scenario": "clip_180", "frame": "000564"}, "frames": ["titan_clip_180_000564_movie_t-3.jpg", "titan_clip_180_000564_movie_t-2.jpg", "titan_clip_180_000564_movie_t-1.jpg", "titan_clip_180_000564_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one lane each direction runs between mid-rise buildings, with no median and slightly worn pavement; parked vehicles along both curbs make the carriageway narrow and traffic remains light. A black van is stopped along the left curb just ahead in the ego lane, narrowing the path and slowing progress. A man wearing blue pants and holding a phone walks toward the camera along the left edge near the van and may step closer to the lane as the ego vehicle approaches. An oncoming small truck moves toward the ego car in the right lane at low speed, relevant because the road is constricted. Additional parked trucks line the right side farther ahead, further reducing available width.", "hazard_reasoning": "There is a man wearing blue pants and holding a phone, walking on the left side of the road, towards the ego car. The pedestrian is walking toward the ego-vehicle and may cross unexpectedly, requiring the driver to manoeuvre safely around him."}
{"id": "train_00821", "split": "train", "clip_key": "titan_clip_1054_000072_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1054_000072_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1054_000072_movie_t-3_augB1.jpg", "titan_clip_1054_000072_movie_t-2_augB1.jpg", "titan_clip_1054_000072_movie_t-1_augB1.jpg", "titan_clip_1054_000072_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing ahead", "environment_perception": "An urban narrow undivided street with mid-rise buildings stretches ahead; the pavement is smooth and traffic is light with a few vehicles moving steadily. A pedestrian in a white shirt crosses mid-block ahead from the left sidewalk toward the right, entering the middle of the road and momentarily occupying the ego vehicle's path. A white hatchback farther ahead in the same lane travels slowly near the center of the street, setting the pace for the ego vehicle. Parked cars line both curbs, narrowing the usable lane, and a side street on the right shows a no-entry sign.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, crossing the street in the middle of the road, from the left side to the right side. The driver should be aware of this pedestrian crossing to avoid a potential collision."}
{"id": "train_00822", "split": "train", "clip_key": "titan_clip_904_000438_movie", "source": {"subset": "titan", "scenario": "clip_904", "frame": "000438"}, "frames": ["titan_clip_904_000438_movie_t-3.jpg", "titan_clip_904_000438_movie_t-2.jpg", "titan_clip_904_000438_movie_t-1.jpg", "titan_clip_904_000438_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban residential two-way street is seen, with the ego vehicle traveling along the left side toward a cross intersection; the pavement looks smooth and traffic appears light with no moving vehicles nearby. A utility truck is parked on the left at the edge of the ego lane, and several orange cones extend into the lane ahead, narrowing the path and forming a small work zone. No oncoming traffic is visible in the opposing lane, and no pedestrian traffic controller is seen on the right side. No salient traffic signals or posted speed signs are clearly readable.", "hazard_reasoning": "There is a pedestrian wearing a yellow vest and a white helmet, standing on the right side of the road, towards the ego car, because they are controlling traffic. The driver should be aware of the pedestrian's position to anticipate any sudden movements during traffic control."}
{"id": "train_00823", "split": "train", "clip_key": "2020-0226-140503_027998_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "027998"}, "frames": ["2020-0226-140503_027998_movie_t-3.jpg", "2020-0226-140503_027998_movie_t-2.jpg", "2020-0226-140503_027998_movie_t-1.jpg", "2020-0226-140503_027998_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction and a solid yellow centerline runs between mid-rise buildings; the pavement is dry and traffic remains light to moderate. A painted triangular divider lies to the right near an intersection. Ahead on the left side of the roadway, a gray hatchback is stopped at the curb and stays stationary, narrowing the usable space in the ego lane. In the opposing lane to the right, a white van approaches and continues straight past the ego-vehicle while keeping to its lane. Farther ahead in the ego lane, several cars travel straight at a steady pace with clear gaps. An overhead 40 speed limit sign is visible.", "hazard_reasoning": "There is a gray hatchback stopped on the left side of the road ahead of the ego-car. The stopped vehicle may pull out unexpectedly or re-enter the traffic flow, so slowing down provides the driver with sufficient time and space to react safely."}
{"id": "train_00824", "split": "train", "clip_key": "titan_clip_698_000102_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_698_000102_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_698_000102_movie_t-3_augB1.jpg", "titan_clip_698_000102_movie_t-2_augB1.jpg", "titan_clip_698_000102_movie_t-1_augB1.jpg", "titan_clip_698_000102_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "A narrow urban street with buildings close to the curb lacks lane markings or a divider, and the pavement appears smooth; there is no vehicular traffic in view. Far ahead in the middle of the roadway, a pedestrian pushing a stroller walks toward the ego car, directly along the vehicle's path. On the right edge near the camera, another pedestrian walks toward the camera along the curb, close to the lane but staying by the storefronts. No traffic signals or posted speeds are visible. A freestanding shop sign and curbside grates line the edges, slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian pushing a stroller, walking in the middle of the road, towards the ego car. The driver should yield to the pedestrian to prevent a collision as they are crossing directly ahead."}
{"id": "train_00825", "split": "train", "clip_key": "2020-0228-102841_009102_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "009102"}, "frames": ["2020-0228-102841_009102_movie_t-3.jpg", "2020-0228-102841_009102_movie_t-2.jpg", "2020-0228-102841_009102_movie_t-1.jpg", "2020-0228-102841_009102_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the white van", "environment_perception": "An urban intersection on a two-lane road with no median and smooth pavement, with moderate traffic. The ego vehicle follows left-hand traffic. Ahead in the ego lane, a white van slows then turns right at the intersection and moves away, briefly dictating the ego car's pace. On the cross street to the right, several cars travel straight through the junction, continuing without stopping and remaining outside the ego lane. Pedestrians stand on the left sidewalk near the crosswalk without entering the roadway. Flexible orange posts mark the right edge of the lane near the junction.", "hazard_reasoning": "There is a white van turning right and moving away from the ego car, in the ego lane. The van's lane change could intersect the ego-vehicle's path, so the driver must yield to avoid a collision under these conditions."}
{"id": "train_00826", "split": "train", "clip_key": "2020-0226-140503_031296_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "031296"}, "frames": ["2020-0226-140503_031296_movie_t-3.jpg", "2020-0226-140503_031296_movie_t-2.jpg", "2020-0226-140503_031296_movie_t-1.jpg", "2020-0226-140503_031296_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane in each direction and no median runs between buildings; the asphalt appears dry and traffic is heavy with a stopped queue in the ego lane. Directly ahead, a white hatchback in the ego lane stands still because of the traffic congestion ahead and holds the ego vehicle. Farther ahead in the same lane, a black van remains stopped with brake lights on, extending the jam. In the oncoming lane to the right, a few cars pass slowly without affecting the ego path. Along the left sidewalk, a small delivery scooter and several parked motorcycles sit off the roadway.", "hazard_reasoning": "A white hatchback has stopped in the ego lane in front of the ego car, because of the traffic congestion ahead. The driver should stop to avoid colliding with the stationary vehicle ahead."}
{"id": "train_00827", "split": "train", "clip_key": "2020-0207-151349_021961_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "021961"}, "frames": ["2020-0207-151349_021961_movie_t-3.jpg", "2020-0207-151349_021961_movie_t-2.jpg", "2020-0207-151349_021961_movie_t-1.jpg", "2020-0207-151349_021961_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with stopped truck", "environment_perception": "An urban multilane arterial between tall buildings has dry, well-marked pavement and heavy, near-standstill traffic. A gray box truck directly ahead in the ego lane is stopped because of congestion and blocks the path, setting the pace. In the adjacent right lane, a small covered truck slightly ahead creeps forward parallel to the ego vehicle, limiting a rightward lane change. A white SUV farther right moves slowly alongside, further constraining lateral space. Bright low sun ahead casts strong glare across the scene.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of traffic congestion ahead. The driver must stop to maintain a safe distance and avoid a rear-end collision with the stationary vehicle."}
{"id": "train_00828", "split": "train", "clip_key": "titan_clip_275_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_275_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_275_000204_movie_t-3_augB1.jpg", "titan_clip_275_000204_movie_t-2_augB1.jpg", "titan_clip_275_000204_movie_t-1_augB1.jpg", "titan_clip_275_000204_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian stepping into road", "environment_perception": "A narrow urban side street runs straight ahead between close buildings, a single lane without a centerline and with mostly smooth pavement; traffic is light with no moving vehicles visible. On the left, a man in a black shirt and beige pants steps off the curb from the construction area into the road and moves toward the lane, and may enter the ego lane. On the right by a shuttered storefront, parked bicycles and assorted items intrude slightly into the roadway, while orange cones and fencing line the left-side work zone.", "hazard_reasoning": "There is a man wearing a black shirt and beige pants, and stepping off of the curb into the road, on the left side of the road. The pedestrian may enter the vehicle's path unexpectedly, so the driver should exercise caution and be prepared to adjust speed."}
{"id": "train_00829", "split": "train", "clip_key": "titan_clip_594_000252_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_594_000252_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_594_000252_movie_t-3_augB1.jpg", "titan_clip_594_000252_movie_t-2_augB1.jpg", "titan_clip_594_000252_movie_t-1_augB1.jpg", "titan_clip_594_000252_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with a single lane in each direction and no median has smooth pavement and very light vehicle traffic. Two pedestrians ahead in the middle of the ego lane walk away from the vehicle, one carrying a handbag, and they constrain the pace. A third pedestrian on the right by the storefront walks toward the camera along the curb and could step into the lane. Shopfront banners and building facades sit close to the roadway, narrowing the available space.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and, walking in the middle of the road, away from the ego-car. The driver should carefully manoeuvre to avoid collision with the pedestrian."}
{"id": "train_00830", "split": "train", "clip_key": "2020-0129-144857_016952_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "016952"}, "frames": ["2020-0129-144857_016952_movie_t-3.jpg", "2020-0129-144857_016952_movie_t-2.jpg", "2020-0129-144857_016952_movie_t-1.jpg", "2020-0129-144857_016952_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial between tall buildings has a curbed shoulder on the right and smooth dry asphalt, with heavy stop-and-go traffic throughout. A black van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. Farther ahead in the same lane, a large bus queues and barely creeps forward, sustaining the backup. In the adjacent lane to the left, a white box truck inches forward beside the ego car, reducing room to merge and influencing the ego vehicle's pace. Other cars in the left lane also move slowly past, and no salient signals or hazards are visible.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. You should stop to avoid colliding with the stationary vehicle ahead and allow time to react to the slowed traffic."}
{"id": "train_00831", "split": "train", "clip_key": "2020-0205-103411_001361_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "001361"}, "frames": ["2020-0205-103411_001361_movie_t-3.jpg", "2020-0205-103411_001361_movie_t-2.jpg", "2020-0205-103411_001361_movie_t-1.jpg", "2020-0205-103411_001361_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cone", "environment_perception": "An urban scene on a two-lane road curving right beside a fenced construction site; the pavement is good, there is no median, and traffic is slow-moving. The ego vehicle follows a black sedan directly ahead in the left lane that slows to a stop at a zebra crossing, constraining the pace. Ahead-right, a red taxi in the adjacent lane creeps forward beside the sedan as it negotiates the crossing. Multiple pedestrians cross from right to left at the crosswalk while others wait, so vehicles yield. A pedestrian-crossing warning sign is visible on the left fence, and a red traffic cone sits on the left side of the ego car near the barrier, marking the work area.", "hazard_reasoning": "There is a red traffic cone on the left side of the ego-car. This cone marks a construction area hazard that may affect the driving path, so be aware of its position."}
{"id": "train_00832", "split": "train", "clip_key": "2020-0129-105040_002841_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "002841"}, "frames": ["2020-0129-105040_002841_movie_t-3.jpg", "2020-0129-105040_002841_movie_t-2.jpg", "2020-0129-105040_002841_movie_t-1.jpg", "2020-0129-105040_002841_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a narrow raised median and smooth pavement runs between mid-rise buildings; the ego side has a single through lane and traffic is moderate and steady. A light truck ahead in the ego lane proceeds straight at a constant pace, setting the flow. To the right beyond the median, an oncoming kei truck and several cars approach and pass in their lanes without impacting the ego path. On the left edge near the curb, a pedestrian stands beside a parked vehicle protruding into the roadway, and may enter the ego lane because of this obstruction. Several other vehicles are parked along the curbs, slightly narrowing the usable space.", "hazard_reasoning": "There is a pedestrian standing on the left side of the road because of the parked vehicle ahead on the road. The parked car narrows the roadside space and may force the pedestrian into traffic, so you should slow down to maintain control and avoid collision."}
{"id": "train_00833", "split": "train", "clip_key": "titan_clip_397_000354_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_397_000354_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_397_000354_movie_t-3_augB1.jpg", "titan_clip_397_000354_movie_t-2_augB1.jpg", "titan_clip_397_000354_movie_t-1_augB1.jpg", "titan_clip_397_000354_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single left-driving lane and no median unfolds ahead; the pavement is dark and smooth, and traffic is light. The lane narrows where construction cones line the left curb. A white car ahead in the same lane moves slowly toward the distant arcade, setting the pace for the ego-vehicle. On the left edge, a small delivery truck loaded with crates stands beside the cones, partially intruding into the lane and squeezing the path. Farther ahead, a pedestrian in a blue shirt and gray pants crosses from the left side toward the right, briefly entering the ego lane and becoming the main conflict to watch.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and gray pants, crossing the street from the left side of the road to the right side. The pedestrian is moving into the vehicle's path, so the driver should slow down to avoid a collision."}
{"id": "train_00834", "split": "train", "clip_key": "2020-0205-103411_056967_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "056967"}, "frames": ["2020-0205-103411_056967_movie_t-3.jpg", "2020-0205-103411_056967_movie_t-2.jpg", "2020-0205-103411_056967_movie_t-1.jpg", "2020-0205-103411_056967_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three lanes in the ego direction and a planted median divides directions; the pavement is smooth with minor cracks at the zebra crossing, and traffic flows at a moderate pace under a green signal. Ahead in the ego lane, a white box truck slows as traffic bunches near the signal, constraining the ego car's speed. A dark sedan is stationary along the left curb just beyond the crosswalk, close to the ego lane. In the lane to the right, a small car continues ahead through the junction, moving away.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The truck's deceleration signals buildup of traffic, so the driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_00835", "split": "train", "clip_key": "2020-0131-135401_074302_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "074302"}, "frames": ["2020-0131-135401_074302_movie_t-3.jpg", "2020-0131-135401_074302_movie_t-2.jpg", "2020-0131-135401_074302_movie_t-1.jpg", "2020-0131-135401_074302_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision ahead.", "environment_perception": "An urban multi-lane arterial with smooth dry pavement carries heavy, stop-and-go same-direction traffic, and there is no physical median. A black car is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle. To the left, a large white box truck slightly ahead queues in its lane and creeps forward, constraining space and partially blocking the view. On the right, a silver van alongside slows in the adjacent lane and could drift forward to merge into the ego lane as gaps open. An overhead sign indicates the left lane is for left turns, the center lanes go straight, and the right lane is for right turns.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid rear-end collision in the congested traffic."}
{"id": "train_00836", "split": "train", "clip_key": "2020-0131-103016_007808_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "007808"}, "frames": ["2020-0131-103016_007808_movie_t-3.jpg", "2020-0131-103016_007808_movie_t-2.jpg", "2020-0131-103016_007808_movie_t-1.jpg", "2020-0131-103016_007808_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under elevated expressways, with two same-direction lanes and a concrete barrier on the right separating another roadway; the pavement is dry and traffic is moderate, slowing near an intersection. A black motorcycle ahead in the ego lane reduces speed because the traffic light ahead is red, directly governing the ego car's pace. A dark sedan slightly ahead to the left continues straight in its lane without signaling, remaining parallel to the ego vehicle. Farther ahead, a short queue of cars accumulates at the light. A white hatchback is stationary at the left curb near the camera.", "hazard_reasoning": "There is a black motorcycle slowing in front of the ego car, in the ego lane, because of a red traffic light ahead. The motorcycle's deceleration signals an upcoming stop, so the driver should slow down to maintain a safe following distance and avoid a collision under these conditions."}
{"id": "train_00837", "split": "train", "clip_key": "2020-0217-110854_016317_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "016317"}, "frames": ["2020-0217-110854_016317_movie_t-3.jpg", "2020-0217-110854_016317_movie_t-2.jpg", "2020-0217-110854_016317_movie_t-1.jpg", "2020-0217-110854_016317_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the changing gray van", "environment_perception": "An urban multi-lane arterial approaches a broad, signalized intersection with zebra crossings; the pavement is dry and smooth, and traffic flows at a moderate pace. A gray van directly ahead of the ego car moves across the ego lane into the left lane, slightly reducing headway as it merges. A white van to the front right continues straight in the adjacent right lane, keeping pace beside the ego vehicle. Several pedestrians wait on the left sidewalk at the crosswalk. Signal heads span the junction, and a no right turn sign is posted on a pole to the left.", "hazard_reasoning": "There is a gray van in front of the ego car, changing to the left lane. The van's unexpected merge may require the driver to adjust speed or steering to avoid collision."}
{"id": "train_00838", "split": "train", "clip_key": "2020-0207-101955_054182_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "054182"}, "frames": ["2020-0207-101955_054182_movie_t-3.jpg", "2020-0207-101955_054182_movie_t-2.jpg", "2020-0207-101955_054182_movie_t-1.jpg", "2020-0207-101955_054182_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way road leads into a signalized intersection with smooth pavement and heavy, slow traffic. A black sedan directly ahead slows in the middle of the intersection because of congestion ahead, constraining the ego vehicle. A short queue of cars in the adjacent same-direction lane also creeps forward beyond the crosswalk, keeping tight gaps. On the right at the curb by the dealership, a small white truck waits beside the lane and may merge after the queue clears. Light oncoming traffic passes through the junction without affecting the ego path.", "hazard_reasoning": "There is a black sedan slowing down in the middle of the intersection, because of traffic congestion ahead. Drivers should slow down to maintain a safe following distance and avoid sudden braking in the congested traffic."}
{"id": "train_00839", "split": "train", "clip_key": "titan_clip_3_000036_movie", "source": {"subset": "titan", "scenario": "clip_3", "frame": "000036"}, "frames": ["titan_clip_3_000036_movie_t-3.jpg", "titan_clip_3_000036_movie_t-2.jpg", "titan_clip_3_000036_movie_t-1.jpg", "titan_clip_3_000036_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial lined with tall office buildings has smooth pavement and two lanes in the ego direction, with a low metal fence separating a red-painted center priority lane and the opposite carriageway; traffic is moderate and moves steadily. A dark minivan ahead along the left curb lane proceeds slowly near the parked vehicles, constraining the ego vehicle's pace. Farther ahead in the same lane, a small white car continues straight at a steady speed, remaining in the ego vehicle's path. On the far right beyond the fence, a stream of oncoming cars travels the opposite lanes and remains isolated from the ego lane. A speed-limit sign is visible on a pole ahead.", "hazard_reasoning": "There are no immediate hazards detected, so the driver can continue normal driving without additional caution."}
{"id": "train_00840", "split": "train", "clip_key": "2020-0221-115122_031251_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0221-115122_031251_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0221-115122_031251_movie_t-3_augB1.jpg", "2020-0221-115122_031251_movie_t-2_augB1.jpg", "2020-0221-115122_031251_movie_t-1_augB1.jpg", "2020-0221-115122_031251_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be cautious of merging vehicle ahead.", "environment_perception": "An urban multi-lane arterial runs under an elevated roadway, with a right-side guardrail and smooth dry pavement; traffic is heavy and slow in the same direction. Directly ahead, a black sedan moves over from the left lane into the ego lane and settles in front, constraining the ego car's pace. Farther ahead, a white compact car continues in the ego lane at low speed amid the queue. Vehicles in the adjacent left lanes creep forward parallel to the ego vehicle without merging. No notable signals appear, and there are no other obstacles visible.", "hazard_reasoning": "There is a black sedan in front of the ego car, cutting in to the ego lane from the left lane. This cut-in reduces space and may force sudden braking or steering, so the driver should remain cautious of merging vehicles ahead."}
{"id": "train_00841", "split": "train", "clip_key": "titan_clip_486_000594_movie", "source": {"subset": "titan", "scenario": "clip_486", "frame": "000594"}, "frames": ["titan_clip_486_000594_movie_t-3.jpg", "titan_clip_486_000594_movie_t-2.jpg", "titan_clip_486_000594_movie_t-1.jpg", "titan_clip_486_000594_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban back street with no centerline narrows between buildings, the asphalt appears intact and traffic is light with no moving vehicles. A pay parking lot lines the right, and a construction fence runs along the mid-block. On the right edge near the parking-lot entrance, a pedestrian in a white shirt and black pants walks toward the ego vehicle and may step into the lane. Ahead in the middle of the lane, another pedestrian approaches slowly, constraining the ego vehicle's pace. Farther ahead along the left curb, a small group of pedestrians walks away in the same direction and stays by the edge. A white van sits in the parking lot to the right, near the driveway, and a large yellow P sign for the lot is visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black plants, walking on the right side of the road, towards the ego car. The pedestrian is approaching the vehicle's path and may enter the lane, so the driver should slow down to avoid collision."}
{"id": "train_00842", "split": "train", "clip_key": "titan_clip_242_000618_movie", "source": {"subset": "titan", "scenario": "clip_242", "frame": "000618"}, "frames": ["titan_clip_242_000618_movie_t-3.jpg", "titan_clip_242_000618_movie_t-2.jpg", "titan_clip_242_000618_movie_t-1.jpg", "titan_clip_242_000618_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "A narrow urban alley with buildings tight to the curb forms a single shared lane with no divider and smooth pavement; vehicle traffic is light and slow. Several pedestrians are ahead in the ego lane slightly left, walking away along the roadway and occupying the lane, which constrains the vehicle's pace. A pedestrian wearing a black shirt and blue pants is bent over at the right edge of the lane near plants, close to the travel path and potentially moving into it. Farther ahead near the center, another pedestrian continues along the lane in the same direction.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and blue pants, bent over on the right side of the lane. The pedestrian's posture and proximity to the travel lane could result in sudden movement into the vehicle's path, so the driver should carefully manoeuvre around them."}
{"id": "train_00843", "split": "train", "clip_key": "2020-0228-150133_063139_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "063139"}, "frames": ["2020-0228-150133_063139_movie_t-3.jpg", "2020-0228-150133_063139_movie_t-2.jpg", "2020-0228-150133_063139_movie_t-1.jpg", "2020-0228-150133_063139_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes is separated from oncoming traffic by a painted striped median; the pavement is dry and smooth, and overall flow is moderate with brief slowing. Ahead in the ego lane, a black sedan slows because of traffic congestion ahead, constraining our pace. Slightly ahead to the left, a small box truck in the adjacent lane also moves slowly, limiting opportunities to change lanes. To the right beyond the median, an oncoming motorcycle and several cars approach steadily in the opposite lanes without entering our path. An overhead blue direction sign indicates routes and destinations 300 m ahead.", "hazard_reasoning": "There is a black sedan slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of traffic ahead."}
{"id": "train_00844", "split": "train", "clip_key": "2020-0226-140503_082680_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "082680"}, "frames": ["2020-0226-140503_082680_movie_t-3.jpg", "2020-0226-140503_082680_movie_t-2.jpg", "2020-0226-140503_082680_movie_t-1.jpg", "2020-0226-140503_082680_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and no physical median has smooth pavement and moderate traffic queuing at a signalized intersection. A white hatchback directly ahead in the ego lane is stopped as the right-turn signal is red, constraining the ego vehicle. A white minivan in the lane to the left is slightly ahead and rolls forward slowly straight. Cars in the right adjacent lane also creep toward the junction at low speed. Oncoming traffic flows steadily in the lanes on the right side of the roadway, and overhead signs indicate permitted directions with a separate right-turn phase.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, because the traffic light for vehicles turning right is red. The driver should stop to avoid a collision with the halted vehicle ahead and comply with the traffic signal."}
{"id": "train_00845", "split": "train", "clip_key": "2020-0203-154554_069958_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "069958"}, "frames": ["2020-0203-154554_069958_movie_t-3.jpg", "2020-0203-154554_069958_movie_t-2.jpg", "2020-0203-154554_069958_movie_t-1.jpg", "2020-0203-154554_069958_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one lane in each direction is divided by a painted chevron median; the asphalt is dry, and the ego lane faces heavy, stop-and-go traffic while oncoming flow is steady. In the ego lane directly ahead, a silver motorcycle is stopped with a foot down because of congestion, holding the ego vehicle at a standstill. Farther ahead in the same lane, a red car and a short queue of vehicles are stopped or creeping, creating the bottleneck. To the right, oncoming cars, including a silver SUV, pass beyond the painted median and do not affect the ego path. A white van sits at the left curb, and low sun ahead causes some glare.", "hazard_reasoning": "There is a silver motorcycle stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. This requires you to stop to avoid a collision with the halted motorcycle."}
{"id": "train_00846", "split": "train", "clip_key": "2020-0207-151349_073200_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "073200"}, "frames": ["2020-0207-151349_073200_movie_t-3.jpg", "2020-0207-151349_073200_movie_t-2.jpg", "2020-0207-151349_073200_movie_t-1.jpg", "2020-0207-151349_073200_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street runs under an elevated expressway with two same-direction lanes, guardrails on both sides, and smooth pavement; traffic is light and flowing. A black van ahead in the ego lane drives away from the ego car at a steady pace, determining the following distance. Farther ahead in the right lane, a white van travels in the same direction at similar speed without impeding the ego path. On the left sidewalk, a few pedestrians walk along behind a continuous railing, remaining clear of the roadway. Blue overhead direction signs are visible.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. The driver should be aware of this vehicle ahead since it may slow unexpectedly, requiring timely braking."}
{"id": "train_00847", "split": "train", "clip_key": "2020-0220-151845_054386_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "054386"}, "frames": ["2020-0220-151845_054386_movie_t-3.jpg", "2020-0220-151845_054386_movie_t-2.jpg", "2020-0220-151845_054386_movie_t-1.jpg", "2020-0220-151845_054386_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid rear-end collision.", "environment_perception": "An urban multilane road runs beneath an elevated viaduct, with two same-direction lanes, a concrete barrier on the left, and damp pavement; traffic is heavy and slow. A pink flatbed truck immediately ahead in the ego lane decelerates with brake lights on and stops because of congestion, holding the ego vehicle behind. In the adjacent right lane, a line of cars creeps forward parallel to the ego lane, limiting chances to merge. A white van draws alongside at the right edge, proceeding slowly in the next lane. The viaduct columns and the left barrier restrict the view farther ahead, and no salient signals or signs are visible.", "hazard_reasoning": "There is a pink truck slowing and stopping in the ego lane because of traffic congestion ahead. Drivers should stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_00848", "split": "train", "clip_key": "2020-0131-103016_007808_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-103016_007808_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-103016_007808_movie_t-3_augB1.jpg", "2020-0131-103016_007808_movie_t-2_augB1.jpg", "2020-0131-103016_007808_movie_t-1_augB1.jpg", "2020-0131-103016_007808_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under elevated expressways, with two same-direction lanes and a concrete barrier on the right separating another roadway; the pavement is dry and traffic is moderate, slowing near an intersection. A black motorcycle ahead in the ego lane reduces speed because the traffic light ahead is red, directly governing the ego car's pace. A dark sedan slightly ahead to the left continues straight in its lane without signaling, remaining parallel to the ego vehicle. Farther ahead, a short queue of cars accumulates at the light. A white hatchback is stationary at the left curb near the camera.", "hazard_reasoning": "There is a black motorcycle slowing in front of the ego car, in the ego lane, because of a red traffic light ahead. The motorcycle's deceleration signals an upcoming stop, so the driver should slow down to maintain a safe following distance and avoid a collision under these conditions."}
{"id": "train_00849", "split": "train", "clip_key": "titan_clip_414_000390_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_414_000390_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_414_000390_movie_t-3_augB1.jpg", "titan_clip_414_000390_movie_t-2_augB1.jpg", "titan_clip_414_000390_movie_t-1_augB1.jpg", "titan_clip_414_000390_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrians", "environment_perception": "An urban two-way street with one narrow lane in each direction, no median, and smooth asphalt carries light traffic as the ego car proceeds in the left lane past storefronts. On the left side ahead, three people wearing white shirts and blue pants, carrying handbags, walk away from the ego car along the roadway, partially occupying the ego lane and constraining its pace. In the opposite lane to the right, a black SUV approaches near the curb at low speed and passes by without encroaching. Farther ahead, a small vehicle continues in the same direction in the distance.", "hazard_reasoning": "There are three men wearing white shirts and blue pants, carrying handbags, and walking away from the ego car, on the left side of the road. The pedestrians are close to the roadway edge and may step into the lane, so the driver should manoeuvre around them to avoid a collision."}
{"id": "train_00850", "split": "train", "clip_key": "2020-0225-102455_074047_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "074047"}, "frames": ["2020-0225-102455_074047_movie_t-3.jpg", "2020-0225-102455_074047_movie_t-2.jpg", "2020-0225-102455_074047_movie_t-1.jpg", "2020-0225-102455_074047_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "In a dense urban setting, the car proceeds on a three-lane arterial with same-direction traffic, a raised median on the right, and smooth pavement; overall flow is heavy and slow. A small van directly ahead in the ego lane slows and queues due to congestion, constraining our pace. A large box truck slightly ahead to the left creeps forward in the adjacent lane, staying close and limiting lateral space. To the right, a black taxi in the next lane rolls slowly with the queue and remains parallel to the ego vehicle. A blue sign with a straight arrow indicates traffic must continue ahead.", "hazard_reasoning": "There is a gray van slowing in the ego-car lane, because of traffic congestion ahead. Slow down to maintain a safe following distance and avoid collision."}
{"id": "train_00851", "split": "train", "clip_key": "2020-0221-115122_028614_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "028614"}, "frames": ["2020-0221-115122_028614_movie_t-3.jpg", "2020-0221-115122_028614_movie_t-2.jpg", "2020-0221-115122_028614_movie_t-1.jpg", "2020-0221-115122_028614_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision ahead", "environment_perception": "An urban arterial runs under an elevated expressway with a concrete barrier on the left separating another roadway; the pavement is good and traffic is heavy in stop-and-go flow. A white hatchback directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. Farther ahead in the same lane, a small white van inches forward with the queue, keeping speeds low. On the right, a black SUV and a small truck creep along within the striped taper toward the through lane and may merge into the ego lane. Beyond the barrier on the left, opposing traffic moves steadily. Pedestrians are visible on the left sidewalk behind railings.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle ahead."}
{"id": "train_00852", "split": "train", "clip_key": "2020-0204-150838_027669_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "027669"}, "frames": ["2020-0204-150838_027669_movie_t-3.jpg", "2020-0204-150838_027669_movie_t-2.jpg", "2020-0204-150838_027669_movie_t-1.jpg", "2020-0204-150838_027669_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with a planted median runs between tall office buildings; pavement is smooth and traffic is heavy, queuing at a signalized intersection. The ego vehicle travels in a through lane on the left side of the divided road as in Japan. A black sedan directly ahead is stopped for a red light, constraining the ego car's pace. To the right, a silver microvan is slightly ahead in the adjacent lane and creeps forward with the queue, remaining parallel to the ego path. Farther ahead in the neighboring lanes, several buses and cars wait near the junction, keeping overall speeds low. The traffic signal over the intersection shows red, and no hazards or work zones are visible.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid colliding with the halted vehicle at the red light."}
{"id": "train_00853", "split": "train", "clip_key": "titan_clip_299_000294_movie", "source": {"subset": "titan", "scenario": "clip_299", "frame": "000294"}, "frames": ["titan_clip_299_000294_movie_t-3.jpg", "titan_clip_299_000294_movie_t-2.jpg", "titan_clip_299_000294_movie_t-1.jpg", "titan_clip_299_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban narrow two-way street with no centerline runs between close-set buildings, the pavement is smooth, and traffic is very light as the car moves forward. A pedestrian with a dark outfit and umbrella walks ahead along the left edge in the same direction, staying close to the curb. On the right, a pedestrian in a blue shirt walks in the roadway to get around a parked black car protruding from a driveway, so they may drift toward the ego path. Farther ahead, a white van is stopped near the left curb in the same direction. Parked vehicles and a bicycle on the right narrow the clearance, and no oncoming traffic appears.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and walking on the right side of the road, because of the parked vehicle. The driver should carefully manoeuvre around this pedestrian to avoid collision, as they are forced into the travel lane."}
{"id": "train_00854", "split": "train", "clip_key": "2020-0205-103411_008109_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "008109"}, "frames": ["2020-0205-103411_008109_movie_t-3.jpg", "2020-0205-103411_008109_movie_t-2.jpg", "2020-0205-103411_008109_movie_t-1.jpg", "2020-0205-103411_008109_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked sedan on the left", "environment_perception": "An urban arterial with multiple same-direction lanes and a painted right-turn lane has clean pavement and no physical median, and traffic flows steadily at moderate density toward a signalized intersection. In the adjacent right lane, a white van continues ahead past the crosswalk, partially occluding the view but not impeding the ego lane. Farther ahead in the center lanes, a small van proceeds toward the junction at a steady pace. Along the left curb by the shops, a black sedan is parked on the left side of the road, slightly narrowing the shoulder. Pedestrians gather on the left sidewalk near railings and the crosswalk, walking and waiting without entering the roadway.", "hazard_reasoning": "There is a black sedan parked on the left side of the road. This parked vehicle could re-enter traffic unexpectedly or obstruct the lane, so the driver should be aware to avoid sudden maneuvers."}
{"id": "train_00855", "split": "train", "clip_key": "2020-0131-135401_053565_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-135401_053565_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-135401_053565_movie_t-3_augB1.jpg", "2020-0131-135401_053565_movie_t-2_augB1.jpg", "2020-0131-135401_053565_movie_t-1_augB1.jpg", "2020-0131-135401_053565_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be cautious of the motorcycle.", "environment_perception": "An urban arterial with multiple lanes runs straight between mid-rise buildings; a row of orange bollards forms a median to the right that separates oncoming traffic, and the pavement is clean while flow is moderate and steady. A small white car ahead in the ego lane proceeds at a constant pace and sets the ego vehicle's speed. A black motorcycle moves in the lane to the left of the ego car, keeping pace as traffic flows. In the opposing lanes to the right beyond the bollards, a white minivan approaches and passes without interaction. Blue overhead direction signs are visible farther ahead.", "hazard_reasoning": "There is a black motorcycle moving in the lane to the left of the ego car, because traffic is flowing. The driver should be cautious of the motorcycle's movements, as it may merge into the ego-vehicle's lane unexpectedly."}
{"id": "train_00856", "split": "train", "clip_key": "2020-0203-114632_090446_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "090446"}, "frames": ["2020-0203-114632_090446_movie_t-3.jpg", "2020-0203-114632_090446_movie_t-2.jpg", "2020-0203-114632_090446_movie_t-1.jpg", "2020-0203-114632_090446_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated viaduct, the pavement dry and intact, with moderate traffic converging toward an intersection. A white minivan ahead in the ego lane stops for a red light and blocks the ego's path, matching the note that it is halted by the signal. A large trailer truck in the right adjacent lane rolls forward alongside and slightly ahead, limiting space to change right. A blue refuse truck to the left proceeds straight near the curb and stays close, constraining movement on that side as well. Overhead traffic lights facing this approach show red.", "hazard_reasoning": "There is a white minivan stopped in the ego lane, because of a red traffic light. The driver must stop now to avoid a rear-end collision at the red light aligned with the warning content."}
{"id": "train_00857", "split": "train", "clip_key": "2020-0203-154554_056038_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "056038"}, "frames": ["2020-0203-154554_056038_movie_t-3.jpg", "2020-0203-154554_056038_movie_t-2.jpg", "2020-0203-154554_056038_movie_t-1.jpg", "2020-0203-154554_056038_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement runs past mid-rise buildings; a painted median and triangular island split off a right-turn lane, and traffic is moderate and flowing steadily. A gray van ahead in the ego lane drives away from the camera, maintaining speed and effectively setting the ego car's pace. A beige mini car slightly ahead to the left continues straight in the adjacent lane without drifting toward the ego lane. A group consisting of a small white van and a bus ahead right follows the curved, separated right-turn lane, remaining outside the ego path. A signalized intersection is visible ahead.", "hazard_reasoning": "There is a gray van driving in the ego lane, away from the ego car. You should follow the vehicle ahead to maintain a safe distance and comply with the red light."}
{"id": "train_00858", "split": "train", "clip_key": "titan_clip_584_000360_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_584_000360_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_584_000360_movie_t-3_augB1.jpg", "titan_clip_584_000360_movie_t-2_augB1.jpg", "titan_clip_584_000360_movie_t-1_augB1.jpg", "titan_clip_584_000360_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one narrow lane each direction has smooth asphalt, no median, and light traffic. Ahead, a pedestrian wearing black pants and carrying a backpack is in the middle of the road, crossing from right to left across the ego vehicle's path. On the right in the oncoming lane, a black taxi is pulled over and stationary by the curb, slightly constricting the opposing side. Farther ahead near the left curb, a scooter moves in the same direction at low speed, potentially affecting the approach to the crossing. Parked vehicles line the edges, and no prominent signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying a backpack, who is in the middle of the road, crossing the street, from the right side of the road to the left. The vehicle should manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_00859", "split": "train", "clip_key": "2020-0127-132751_094099_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "094099"}, "frames": ["2020-0127-132751_094099_movie_t-3.jpg", "2020-0127-132751_094099_movie_t-2.jpg", "2020-0127-132751_094099_movie_t-1.jpg", "2020-0127-132751_094099_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane each direction is separated by a wide hatched median; the pavement looks dry and slightly worn, and traffic is light. A gray van travels ahead in the ego lane moving away at a steady pace, defining the immediate path of travel. Two cars approach in the oncoming lane on the right, continuing straight past without deviating toward the median. A construction wall and guardrail line the left edge, narrowing the shoulder. An overhead sign shows a 40 speed limit.", "hazard_reasoning": "There is a gray van driving in the ego lane, away from the ego car. Following the van helps you stay alert for pedestrians at the marked crosswalk that may suddenly enter the road."}
{"id": "train_00860", "split": "train", "clip_key": "titan_clip_45_000306_movie", "source": {"subset": "titan", "scenario": "clip_45", "frame": "000306"}, "frames": ["titan_clip_45_000306_movie_t-3.jpg", "titan_clip_45_000306_movie_t-2.jpg", "titan_clip_45_000306_movie_t-1.jpg", "titan_clip_45_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with paver blocks and no centerline runs between storefronts; the surface looks good and there is no other vehicle traffic, so the ego car proceeds slowly amid moderate pedestrian flow. On the left edge just ahead, a pedestrian in a gray coat carrying a handbag walks away from the ego vehicle along the curb as other pedestrians approach in the opposite direction, keeping close to the travel path. Two men on the left near the curb stand and edge toward the roadway, positioned close to the ego lane and potentially encroaching on it. Farther ahead in the center and right of the lane, several pedestrians walk toward the ego car, gradually closing distance and constraining pace. Freestanding shop signboards line both sides and slightly narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a gray coat, carrying a handbag, walking on the left side of the road, away from the ego car, because there are other pedestrians walking in the opposite direction. The pedestrian may unexpectedly step into the vehicle's path among the crowd, so slowing down reduces collision risk."}
{"id": "train_00861", "split": "train", "clip_key": "2020-0204-150838_032527_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "032527"}, "frames": ["2020-0204-150838_032527_movie_t-3.jpg", "2020-0204-150838_032527_movie_t-2.jpg", "2020-0204-150838_032527_movie_t-1.jpg", "2020-0204-150838_032527_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A dense urban multi-lane arterial lined with tall buildings has dry, well-marked pavement and heavy, slow traffic near a signalized intersection. The ego vehicle is on the left-side carriageway of a two-way road, with oncoming lanes beyond a center line to the right. A white van directly ahead in the ego lane is stopped at a red traffic light, holding the ego car and setting the pace. To the left, a black taxi and a white minivan travel parallel in the adjacent same-direction lane, creeping forward and staying close alongside. At the far crosswalk on the right, pedestrians cross the intersection while the queue ahead remains stationary.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. As the white van is stopped at a red light, the driver must also stop to prevent a rear-end collision."}
{"id": "train_00862", "split": "train", "clip_key": "2020-0226-140503_024880_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "024880"}, "frames": ["2020-0226-140503_024880_movie_t-3.jpg", "2020-0226-140503_024880_movie_t-2.jpg", "2020-0226-140503_024880_movie_t-1.jpg", "2020-0226-140503_024880_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction and a solid yellow centerline passes between mid-rise buildings; the pavement looks smooth and traffic moves slowly in moderate congestion. A black sedan directly ahead in the ego lane slows and constrains the ego car's pace because a queue forms further up the lane. Farther ahead in the same lane, a white van and other cars creep toward the next intersection, sustaining the bottleneck. To the right, an oncoming white taxi proceeds past in the opposite lane without drifting toward the centerline. An overhead blue sign indicates straight ahead only near the intersection.", "hazard_reasoning": "There is a black sedan slowing down in front of the ego car because of traffic congestion ahead in the ego lane. This slowdown indicates congestion ahead, so the driver should slow down to keep a safe distance and avoid a collision."}
{"id": "train_00863", "split": "train", "clip_key": "titan_clip_279_000654_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_279_000654_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_279_000654_movie_t-3_augB1.jpg", "titan_clip_279_000654_movie_t-2_augB1.jpg", "titan_clip_279_000654_movie_t-1_augB1.jpg", "titan_clip_279_000654_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban side street with a narrow single-lane passage and sound pavement meets the ego road; orange cones line the left edge to form a temporary channel, and traffic is light with no vehicles immediately ahead. At the mouth of the street, a pedestrian wearing a gray vest stands in front of the ego car with arms out, directing traffic and holding the vehicle. Another pedestrian crosses from left to right directly in front of the bumper, and a second walker follows a few steps ahead in the same direction, both prioritized by the traffic controller. Farther ahead near the right-hand storefronts, a small handcart with stacked crates occupies part of the lane.", "hazard_reasoning": "There is a pedestrian wearing a gray vest, standing in front of the ego car, because they are directing traffic. The driver must stop because the traffic controller may allow or halt movement unpredictably, requiring clear right-of-way control."}
{"id": "train_00864", "split": "train", "clip_key": "2020-0207-151349_037052_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "037052"}, "frames": ["2020-0207-151349_037052_movie_t-3.jpg", "2020-0207-151349_037052_movie_t-2.jpg", "2020-0207-151349_037052_movie_t-1.jpg", "2020-0207-151349_037052_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid rear-end collision.", "environment_perception": "An urban divided arterial runs under an elevated expressway, with two lanes in the ego direction, a shrub median to the left and a guardrail to the right; the pavement is dry and traffic is heavy and stop-and-go. A white sedan directly ahead in the ego lane is stopped because of traffic congestion, keeping the ego vehicle stationary. To the left, a line of vehicles moves slowly alongside in the same direction, constraining the ego car's pace. On a parallel service lane behind the right-hand barrier, a large bus waits or crawls forward, remaining separated from the ego lane. Low sun ahead creates glare through the trees, but the roadway appears clear of debris.", "hazard_reasoning": "A white sedan is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop promptly to avoid colliding with the stationary vehicle ahead."}
{"id": "train_00865", "split": "train", "clip_key": "2020-0210-101957_022625_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "022625"}, "frames": ["2020-0210-101957_022625_movie_t-3.jpg", "2020-0210-101957_022625_movie_t-2.jpg", "2020-0210-101957_022625_movie_t-1.jpg", "2020-0210-101957_022625_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the motorcycle ahead", "environment_perception": "An urban two-way street with two same-direction lanes and a painted centerline has smooth pavement and steady moderate flow as it approaches a signalized intersection. A black motorcycle travels ahead in the ego lane, continuing straight and effectively setting the ego vehicle's pace. A silver kei van runs slightly ahead to the right in the adjacent lane, proceeding straight while remaining in its lane. Several oncoming cars pass through the junction in the opposite lanes to the right, continuing without conflict. Overhead traffic lights span the intersection, and low railings border the left sidewalk.", "hazard_reasoning": "There is a black motorcycle driving in front of the ego car, in the ego lane. The motorcycle directly ahead may brake suddenly or change speed unexpectedly, so the driver should be aware and maintain a safe following distance aligning with the warning to be cautious."}
{"id": "train_00866", "split": "train", "clip_key": "2020-0226-101332_018159_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "018159"}, "frames": ["2020-0226-101332_018159_movie_t-3.jpg", "2020-0226-101332_018159_movie_t-2.jpg", "2020-0226-101332_018159_movie_t-1.jpg", "2020-0226-101332_018159_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist ahead", "environment_perception": "An urban multi-lane arterial descends gently with painted chevron medians and turn bays, the pavement dry and slightly worn, and traffic moving at a moderate, steady pace. Two medium trucks far ahead in the ego lane continue straight downhill and set the cruising speed. A white coupe ahead right moves across the hatched area into the right curb lane to slot behind a blue utility truck, staying out of the ego lane. On the far left edge, a cyclist wearing a maroon coat and carrying a bag rides away along the curb, remaining outside the travel lane. Overhead blue direction signs are visible, and no signal aspects stand out.", "hazard_reasoning": "There is a cyclist wearing a maroon coat and carrying a bag, cycling on the left side of the road, away from the ego car. The cyclist may shift position or enter the vehicle's path, so the driver should be aware of the cyclist ahead."}
{"id": "train_00867", "split": "train", "clip_key": "titan_clip_947_000246_movie", "source": {"subset": "titan", "scenario": "clip_947", "frame": "000246"}, "frames": ["titan_clip_947_000246_movie_t-3.jpg", "titan_clip_947_000246_movie_t-2.jpg", "titan_clip_947_000246_movie_t-1.jpg", "titan_clip_947_000246_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban neighborhood scene shows a very narrow two-way road with no median and smooth pavement, and traffic is light. A small dark van ahead in the ego lane moves slowly away along the center of the lane, effectively setting the pace on the tight roadway. On the right edge near a red-brick storefront, a pedestrian wearing a white T-shirt and a hat walks away from the ego car along the roadside, parallel to the path but staying near the curb. A 30 speed-limit sign is posted on a pole at the right corner, and convex corner mirrors stand on the left.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and a hat, walking on the right side of the road, away from the ego car. The pedestrian could step into the vehicle's path, so the driver should manoeuvre carefully around the pedestrian to avoid a collision."}
{"id": "train_00868", "split": "train", "clip_key": "2020-0131-103016_010412_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "010412"}, "frames": ["2020-0131-103016_010412_movie_t-3.jpg", "2020-0131-103016_010412_movie_t-2.jpg", "2020-0131-103016_010412_movie_t-1.jpg", "2020-0131-103016_010412_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban junction under an elevated structure appears, with a single-lane approach marked by red bollards and sound pavement; traffic is heavy and slow. A black sedan stopped directly ahead in the ego lane is waiting to merge onto the main road, holding the ego vehicle. Ahead-left, a small flatbed truck inches forward toward the same opening under the bridge and pauses, positioned to take the same gap. To the right, a white van creeps from a side lane beside the bollards and could enter ahead of the sedan. Farther under the bridge, a motorcyclist travels across from right to left and remains clear of the ego lane. A 40 speed-limit sign stands on the left and a 4.0 m clearance board hangs on the overpass, with a stop sign posted for a side approach.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because it is waiting to merge onto a new road. The driver must stop to avoid a rear-end collision with this stationary vehicle."}
{"id": "train_00869", "split": "train", "clip_key": "titan_clip_798_000510_movie", "source": {"subset": "titan", "scenario": "clip_798", "frame": "000510"}, "frames": ["titan_clip_798_000510_movie_t-3.jpg", "titan_clip_798_000510_movie_t-2.jpg", "titan_clip_798_000510_movie_t-1.jpg", "titan_clip_798_000510_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "An urban neighborhood street with a single narrow two-way carriageway and no centerline runs between buildings, bordered by metal railings; the pavement looks smooth and traffic is light with no moving vehicles. Ahead on the left edge, a man wearing a blue uniform and a white helmet stands beside two parked motorcycles, remaining stationary close to the travel lane, and the bikes slightly intrude into the lane. No oncoming vehicles appear in the right-side opposing lane. A bollard and guardrail line the right edge, and no salient traffic signals or signs are visible.", "hazard_reasoning": "There is a man wearing a blue uniform and a white helmet and standing on the left side of the road. The pedestrian could step into the travel lane unexpectedly, so the driver should exercise caution to avoid a potential collision."}
{"id": "train_00870", "split": "train", "clip_key": "titan_clip_933_000552_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_933_000552_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_933_000552_movie_t-3_augB1.jpg", "titan_clip_933_000552_movie_t-2_augB1.jpg", "titan_clip_933_000552_movie_t-1_augB1.jpg", "titan_clip_933_000552_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of the pedestrian", "environment_perception": "An urban commercial street with a single lane in each direction and no median; the ego vehicle proceeds in the left lane on smooth dry pavement as light to moderate same-direction traffic moves slowly ahead. A pedestrian wearing a black dress and carrying an umbrella walks toward the ego car along the left edge of the roadway beside a parked silver van, moving close to the travel line. A white van ahead in the same lane rolls slowly in a short queue, setting the ego vehicle's pace. On the right, a cyclist rides toward the camera along the sidewalk parallel to traffic, remaining separated from the roadway by the curb. Parked vehicles line the left side, locally narrowing the lane.", "hazard_reasoning": "There is a pedestrian wearing a black dress and carrying an umbrella, walking at the left side of the road, toward the ego car. The pedestrian is approaching the vehicle path and may step into the lane unexpectedly, so the driver should be cautious."}
{"id": "train_00871", "split": "train", "clip_key": "titan_clip_150_000468_movie", "source": {"subset": "titan", "scenario": "clip_150", "frame": "000468"}, "frames": ["titan_clip_150_000468_movie_t-3.jpg", "titan_clip_150_000468_movie_t-2.jpg", "titan_clip_150_000468_movie_t-1.jpg", "titan_clip_150_000468_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single lane per direction stretches ahead, the ego car in the left lane approaching a signalized crosswalk; pavement is smooth and traffic is light with steady flow. A dark hatchback travels ahead in the ego lane through the intersection, gently moving away and setting the pace. To the left front, a pedestrian wearing a white shirt and black pants, carrying a black bag, crosses the zebra crossing toward the ego car and may enter its lane. Several other pedestrians stand near a storefront on the left, remaining on the sidewalk. Oncoming vehicles proceed along the right-side lane without affecting the ego path. The pedestrian signal on the left shows walk.", "hazard_reasoning": "A pedestrian wearing a white shirt and black pants, carrying a black bag, and crossing a crosswalk, toward the ego car. The pedestrian is entering the vehicle's path, so the driver must stop to avoid a collision and allow safe crossing."}
{"id": "train_00872", "split": "train", "clip_key": "titan_clip_1205_000534_movie", "source": {"subset": "titan", "scenario": "clip_1205", "frame": "000534"}, "frames": ["titan_clip_1205_000534_movie_t-3.jpg", "titan_clip_1205_000534_movie_t-2.jpg", "titan_clip_1205_000534_movie_t-1.jpg", "titan_clip_1205_000534_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Be aware of cyclist ahead", "environment_perception": "An urban two-way street with a single narrow lane per direction and no median has smooth pavement and light traffic as the vehicle approaches a cross street with a zebra crossing. To the left of the ego lane, a cyclist in black pants and a black T-shirt rides in the bicycle lane slightly ahead, moving straight and effectively setting the near-term pace. On the right, a box truck is stopped at the curb with its side door open while a worker unloads, occupying part of the opposing lane but leaving the ego lane clear. On the left sidewalk close to the curb, a pedestrian walks toward the camera and passes without entering the roadway. A large stop marking is painted on the pavement before the intersection.", "hazard_reasoning": "There is a cyclist wearing black pants and black t-shirt cycling in the bicycle lane to the left of the ego lane. The cyclist could move unpredictably toward your lane, so stay alert to avoid a collision."}
{"id": "train_00873", "split": "train", "clip_key": "2020-0131-135401_014881_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "014881"}, "frames": ["2020-0131-135401_014881_movie_t-3.jpg", "2020-0131-135401_014881_movie_t-2.jpg", "2020-0131-135401_014881_movie_t-1.jpg", "2020-0131-135401_014881_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction and no median runs between close buildings; the pavement looks smooth and traffic is light. Ahead in the ego lane, a black hatchback is stopped at a red signal, constraining the ego car's pace. In the oncoming lane to the right, a white van approaches slowly and continues straight without encroaching. Along the right edge, a cyclist rides forward near the curb by parked vehicles while remaining outside the traffic lane.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of the red traffic lights. The driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_00874", "split": "train", "clip_key": "2020-0203-154554_031654_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "031654"}, "frames": ["2020-0203-154554_031654_movie_t-3.jpg", "2020-0203-154554_031654_movie_t-2.jpg", "2020-0203-154554_031654_movie_t-1.jpg", "2020-0203-154554_031654_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated roadway with two same-direction lanes runs under heavy structures, bordered by a concrete wall on the left and a guardrail on the right; the pavement is dry and smooth and traffic is light to moderate. A gray truck directly ahead in the ego lane slows and coasts, constraining the ego vehicle's pace. In the adjacent right lane, a white minivan alongside then eases forward, continuing straight and temporarily blocking an immediate lane change. Farther ahead in the right lane, a small white car maintains a steady speed in the same direction. No signals are visible, and the corridor has little shoulder space.", "hazard_reasoning": "There is a gray truck slowing down in front of the ego car in the ego lane. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_00875", "split": "train", "clip_key": "2020-0205-103411_071828_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "071828"}, "frames": ["2020-0205-103411_071828_movie_t-3.jpg", "2020-0205-103411_071828_movie_t-2.jpg", "2020-0205-103411_071828_movie_t-1.jpg", "2020-0205-103411_071828_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of the truck", "environment_perception": "An urban arterial with three or more same-direction lanes curves gently right; the asphalt is dry and smooth, and traffic is moderate. A gray truck directly ahead changes to the left lane in front of the ego car, moving out of the ego lane. A black minivan in the lane to the right of the ego advances at a similar speed and occupies the adjacent gap, limiting a rightward lane change. A motorcyclist ahead near the left curb proceeds straight at lower speed, close to the truck's new lane. Overhead gantry signs and traffic signals are visible at the upcoming junction.", "hazard_reasoning": "There is a gray truck in front of the ego car changing to the left lane. The truck's lane change may encroach on your lane, so be aware of its movements to maintain safe spacing."}
{"id": "train_00876", "split": "train", "clip_key": "titan_clip_1369_000414_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1369_000414_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1369_000414_movie_t-3_augB1.jpg", "titan_clip_1369_000414_movie_t-2_augB1.jpg", "titan_clip_1369_000414_movie_t-1_augB1.jpg", "titan_clip_1369_000414_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the flagperson", "environment_perception": "An urban Japanese street with closely spaced buildings has a narrow two-way carriageway without a median and smooth pavement; traffic is light with no oncoming vehicles visible. Ahead the roadway narrows at a temporary work zone marked by cones, barricades, and signs. In the center ahead, a flagperson in a blue shirt stands in the middle of the road directing traffic at the work zone, controlling the ego vehicle's pace. On the left, several pedestrians walk along the sidewalk near the curb in the same direction as the ego car, keeping to the footpath. On the right, a white van and a small trailer are parked at the curb beside railings, reducing lateral clearance.", "hazard_reasoning": "There is a flagperson wearing a blue shirt and standing in the middle of the road, because he is directing traffic. The flagperson in the road creates a potential conflict point and requires the driver to adjust their path to avoid collision, so careful manoeuvring is necessary in this situation."}
{"id": "train_00877", "split": "train", "clip_key": "2020-0205-152530_007524_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "007524"}, "frames": ["2020-0205-152530_007524_movie_t-3.jpg", "2020-0205-152530_007524_movie_t-2.jpg", "2020-0205-152530_007524_movie_t-1.jpg", "2020-0205-152530_007524_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of the turning van", "environment_perception": "An urban single-lane-per-direction street with a yellow centerline leads to a signalized intersection; the pavement is smooth and traffic is light. In the oncoming lane to the right, a small white truck approaches and passes close at the junction, reducing lateral space for the ego-vehicle. In the lane to the right of the ego-car, a black van turns right into oncoming traffic at the intersection and proceeds with the right-of-way. Farther ahead on the cross street, a silver minivan travels leftward across the junction without conflicting with the ego path. A pedestrian waits on the left sidewalk by the crosswalk.", "hazard_reasoning": "There is a black van turning right into oncoming traffic in the lane to the right of the ego-car, because it had the right-away to do so at the intersection in front of the ego-car. The driver should be cautious of this turning van as it may cut across the ego-vehicle's path unexpectedly."}
{"id": "train_00878", "split": "train", "clip_key": "2020-0131-103016_008018_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "008018"}, "frames": ["2020-0131-103016_008018_movie_t-3.jpg", "2020-0131-103016_008018_movie_t-2.jpg", "2020-0131-103016_008018_movie_t-1.jpg", "2020-0131-103016_008018_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and a concrete barrier on the right runs under pedestrian overpasses; the pavement is smooth and traffic is moderate but stopped at a signal. Ahead in the ego lane, a white motorcycle waits at the stop line for the red light and directly blocks the ego vehicle. Farther ahead in the right lane, a white van is stopped with a short queue behind, also held by the signal. In the left lane, a black sedan slightly ahead slows to a halt beside the ego car, pacing it while waiting. The traffic light above shows red.", "hazard_reasoning": "There is a white motorcycle stopped in front of the ego car, because of the red traffic light. The driver should stop to maintain a safe distance behind the halted motorcycle at the red light."}
{"id": "train_00879", "split": "train", "clip_key": "2020-0203-114632_086961_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "086961"}, "frames": ["2020-0203-114632_086961_movie_t-3.jpg", "2020-0203-114632_086961_movie_t-2.jpg", "2020-0203-114632_086961_movie_t-1.jpg", "2020-0203-114632_086961_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban signalized intersection under an elevated expressway comes into view, with smooth pavement and bold zebra crossings; traffic appears moderate. A large box truck is directly ahead, crossing the intersection laterally and momentarily blocking the ego car's path. A silver hatchback drives in front of the ego vehicle from the right side of the intersection to the left, also traversing the path and adding to the wait. On the far right edge another small car pauses near the stop line, yielding while the cross traffic clears.", "hazard_reasoning": "There is a silver hatchback driving in front of the ego car, from the right side of the intersection to the left side of the intersection. The hatchback is crossing directly ahead, so the driver should stop to avoid a collision."}
{"id": "train_00880", "split": "train", "clip_key": "titan_clip_909_000234_movie", "source": {"subset": "titan", "scenario": "clip_909", "frame": "000234"}, "frames": ["titan_clip_909_000234_movie_t-3.jpg", "titan_clip_909_000234_movie_t-2.jpg", "titan_clip_909_000234_movie_t-1.jpg", "titan_clip_909_000234_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane in each direction lacks a median and has worn but serviceable pavement; vehicular flow is light while pedestrian activity is dense. Two pedestrians ahead in the middle of the ego lane walk away from the camera carrying handbags, moving there because a parked vehicle blocks the side and they remain in the path of travel. Additional pedestrians stand and stroll along both sidewalks, some near the curb on the right and edging toward the roadway, so they are close to the ego path. A small work truck is parked on the left with workers and orange cones, and more cones line the right edge, temporarily narrowing the corridor.", "hazard_reasoning": "There are two pedestrians carrying handbags, walking in the middle of the road, away from the ego car, because of the parked vehicle. The driver should slow down to avoid a collision with these pedestrians obstructing the lane."}
{"id": "train_00881", "split": "train", "clip_key": "2020-0228-102841_040072_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "040072"}, "frames": ["2020-0228-102841_040072_movie_t-3.jpg", "2020-0228-102841_040072_movie_t-2.jpg", "2020-0228-102841_040072_movie_t-1.jpg", "2020-0228-102841_040072_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with dry, well-kept pavement is flanked by tall buildings, and traffic is heavy and largely stopped in the same direction. A white hatchback directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. On the left edge, a motor scooter filters forward along the curb past the queue, which may move into the ego path. In the adjacent right lane, a white van alongside the ego car creeps with the jam, limiting any lateral movement, and farther ahead a small bus in that lane also waits in the queue.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Driver should stop to avoid a collision with the halted vehicle."}
{"id": "train_00882", "split": "train", "clip_key": "titan_clip_980_000366_movie", "source": {"subset": "titan", "scenario": "clip_980", "frame": "000366"}, "frames": ["titan_clip_980_000366_movie_t-3.jpg", "titan_clip_980_000366_movie_t-2.jpg", "titan_clip_980_000366_movie_t-1.jpg", "titan_clip_980_000366_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with a single two-way shared lane and no median runs between low-rise buildings; the block-paved surface looks even and traffic is light. An oncoming cyclist approaches on the right side of the lane where no cycling lane exists, moving steadily toward the ego vehicle and reducing available space. A pedestrian at the left edge walks along the roadside close to the lane. Another cyclist farther ahead rides away in the center of the lane in the ego direction. Parked bicycles and shop signboards line the right sidewalk and traffic cones sit on the left, slightly narrowing the margins.", "hazard_reasoning": "There is a cyclist wearing a black t-shirt and green pants, cycling toward the ego car on the right-hand side of the lane, because there is no cycling lane. The cyclist could enter the vehicle's path unexpectedly, so the driver should slow down to maintain safety."}
{"id": "train_00883", "split": "train", "clip_key": "2020-0226-101332_044486_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "044486"}, "frames": ["2020-0226-101332_044486_movie_t-3.jpg", "2020-0226-101332_044486_movie_t-2.jpg", "2020-0226-101332_044486_movie_t-1.jpg", "2020-0226-101332_044486_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial passes under an elevated structure and opens into a wide, signalized intersection with smooth, dry pavement; traffic is moderate to heavy, with opposing lanes on the right side. A white van ahead in the ego lane moves away through the junction, gradually increasing the gap from the ego car. In the adjacent left lane another white van proceeds straight at a similar pace. To the right, a black wagon followed by a box truck advances from the right-side approach and curves left to merge into the same direction ahead, narrowing space between lanes. Oncoming vehicles, including a large truck at the far right edge, are present in the opposite lanes.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. It may brake or change speed unexpectedly, so be cautious and maintain a safe following distance."}
{"id": "train_00884", "split": "train", "clip_key": "titan_clip_1148_000414_movie", "source": {"subset": "titan", "scenario": "clip_1148", "frame": "000414"}, "frames": ["titan_clip_1148_000414_movie_t-3.jpg", "titan_clip_1148_000414_movie_t-2.jpg", "titan_clip_1148_000414_movie_t-1.jpg", "titan_clip_1148_000414_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban residential street in Japan runs straight between closely spaced houses, with edge lines but no centerline and smooth pavement; traffic is light with no moving vehicles. On the right side near the curb, a pedestrian wearing a yellow shirt and carrying an umbrella walks toward the ego-vehicle along the narrow shoulder and could edge into the lane due to limited space. Utility poles, fences, and a vending machine sit close to the roadway, further constricting the margin but no signs or signals stand out.", "hazard_reasoning": "There is a pedestrian wearing a yellow shirt, carrying an umbrella, and walking, on the right side of the road, towards the ego-car. The pedestrian could step into the roadway, posing a collision risk, so the driver should carefully maneuver around them."}
{"id": "train_00885", "split": "train", "clip_key": "titan_clip_579_000438_movie", "source": {"subset": "titan", "scenario": "clip_579", "frame": "000438"}, "frames": ["titan_clip_579_000438_movie_t-3.jpg", "titan_clip_579_000438_movie_t-2.jpg", "titan_clip_579_000438_movie_t-1.jpg", "titan_clip_579_000438_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of cones ahead", "environment_perception": "An urban two-way street with a single undivided carriageway and smooth pavement is shown, and traffic is light with no visible oncoming vehicles. Ahead in the ego lane, a silver car is stopped along the left curb, narrowing the usable lane. Farther ahead in the same direction, a white van waits near the curb as well, keeping to the left. On the right sidewalk, a pedestrian walks away past a storefront and remains off the roadway. Just beyond the nearer car, a group of traffic cones stands along the left side of the road, further constricting the margin.", "hazard_reasoning": "There are a group of traffic cones on the left side of the road. The cones indicate a road obstruction or work area ahead, so the driver should be aware and adjust speed accordingly to navigate safely."}
{"id": "train_00886", "split": "train", "clip_key": "2020-0214-102601_086418_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "086418"}, "frames": ["2020-0214-102601_086418_movie_t-3.jpg", "2020-0214-102601_086418_movie_t-2.jpg", "2020-0214-102601_086418_movie_t-1.jpg", "2020-0214-102601_086418_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction and a painted centerline runs past small shops and a gas station; the pavement is dry and traffic is light to moderate, moving slowly ahead. In the ego lane a gray SUV directly ahead slows because a bus further ahead in the same lane is decelerating, constraining the ego vehicle's pace. The bus continues ahead, keeping the queue slow. A small car at the gas station on the right waits near the exit, positioned to merge into the ego lane.", "hazard_reasoning": "There is a gray SUV slowing in the ego lane because of the bus ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of the vehicle ahead."}
{"id": "train_00887", "split": "train", "clip_key": "2020-0214-102601_086216_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "086216"}, "frames": ["2020-0214-102601_086216_movie_t-3.jpg", "2020-0214-102601_086216_movie_t-2.jpg", "2020-0214-102601_086216_movie_t-1.jpg", "2020-0214-102601_086216_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane each direction and a solid center line has smooth but narrow pavement and light traffic moving steadily. A black van ahead in the left ego lane drives away as traffic ahead moves, increasing the gap and pacing the ego vehicle. A bicyclist travels ahead to the right along a fenced side path beside the oncoming lane, remaining outside the roadway. Several pedestrians wait on the left sidewalk near a storefront and parked bicycles without approaching the curb. A small truck is stopped further ahead on the right shoulder near buildings, outside the oncoming lane.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car, because traffic ahead is moving. The driver should follow the vehicle ahead to maintain safe distance and anticipate any sudden stops under this situation."}
{"id": "train_00888", "split": "train", "clip_key": "2020-0213-143552_024252_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "024252"}, "frames": ["2020-0213-143552_024252_movie_t-3.jpg", "2020-0213-143552_024252_movie_t-2.jpg", "2020-0213-143552_024252_movie_t-1.jpg", "2020-0213-143552_024252_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop and maintain safe distance", "environment_perception": "An urban multi-lane intersection with good pavement is busy as the ego car waits at the stop line while moderate cross traffic moves through. A black motorcycle directly ahead in the ego lane is stopped at the crosswalk, waiting at the red light and occupying the ego path. A pedestrian walks rightward across the near crosswalk in front of the ego vehicle, continuing through the lane while the signal favors crossing. Vehicles including a black SUV and a white truck pass laterally across the junction from right to left, forming the active cross flow. The overhead traffic signal facing the ego shows red.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe following distance and comply with the traffic signal to avoid a collision."}
{"id": "train_00889", "split": "train", "clip_key": "2020-0225-145150_026916_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "026916"}, "frames": ["2020-0225-145150_026916_movie_t-3.jpg", "2020-0225-145150_026916_movie_t-2.jpg", "2020-0225-145150_026916_movie_t-1.jpg", "2020-0225-145150_026916_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road with a painted chevron median runs between mid-rise buildings; the pavement is smooth and traffic is moderate. A small box truck proceeds ahead in the ego lane at a steady speed, constraining our pace. A cyclist rides along the left edge of the roadway slightly ahead near the curb, continuing straight close to the lane. In the far right lanes, a dark van and other vehicles approach as oncoming traffic beyond the painted buffer, remaining separated from our path. A pedestrian overpass spans the road in the distance.", "hazard_reasoning": "No immediate hazards detected; visibility and traffic conditions are stable, so the driver can proceed with caution."}
{"id": "train_00890", "split": "train", "clip_key": "2020-0205-152530_059980_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "059980"}, "frames": ["2020-0205-152530_059980_movie_t-3.jpg", "2020-0205-152530_059980_movie_t-2.jpg", "2020-0205-152530_059980_movie_t-1.jpg", "2020-0205-152530_059980_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated interchange comes into view as the ego-vehicle climbs a smooth two-lane ramp beneath a flyover, approaching a fork where the road divides left and right; guardrails and sound barriers line both sides, and traffic is very light with no other vehicles visible. No pedestrians or cyclists appear near the roadway. Overhead traffic signals and a left-turn direction sign are mounted at the split, and the ramps rise gently onto the bridge without obstacles or work zones.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00891", "split": "train", "clip_key": "2020-0213-143552_055029_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "055029"}, "frames": ["2020-0213-143552_055029_movie_t-3.jpg", "2020-0213-143552_055029_movie_t-2.jpg", "2020-0213-143552_055029_movie_t-1.jpg", "2020-0213-143552_055029_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the truck.", "environment_perception": "An urban arterial with a single through lane and a short merge lane on the right has smooth pavement and light traffic queued at a signalized intersection. A large white truck directly ahead in the ego lane is stopped for the red light and constrains the ego car, matching the caption. A small blue truck is stopped ahead to the left in a narrow side lane along the curb, waiting and may merge into the ego lane after the signal. An overhead traffic signal shows red above the lane, and guardrails line both sides near an overpass.", "hazard_reasoning": "There is a white truck stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver should stop to avoid a collision with the stationary vehicle at the red light."}
{"id": "train_00892", "split": "train", "clip_key": "titan_clip_1149_000162_movie", "source": {"subset": "titan", "scenario": "clip_1149", "frame": "000162"}, "frames": ["titan_clip_1149_000162_movie_t-3.jpg", "titan_clip_1149_000162_movie_t-2.jpg", "titan_clip_1149_000162_movie_t-1.jpg", "titan_clip_1149_000162_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban residential scene shows a narrow two-way street with one lane each way, no median, and smooth dry pavement, with very light traffic as the ego car approaches a small side street and zebra crossing. Ahead to the right, a pedestrian in a white shirt carrying a bag holds an umbrella and walks along the curb toward the crosswalk, close to the ego lane and may step into the path. No vehicles move in front of the ego, and bicycles are parked by the right-side building. A pedestrian-crossing sign stands on the right.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a bag, walking in the ego lane, towards the ego car. The driver should carefully manoeuvre to avoid a potential collision with the pedestrian entering the lane."}
{"id": "train_00893", "split": "train", "clip_key": "titan_clip_915_000672_movie", "source": {"subset": "titan", "scenario": "clip_915", "frame": "000672"}, "frames": ["titan_clip_915_000672_movie_t-3.jpg", "titan_clip_915_000672_movie_t-2.jpg", "titan_clip_915_000672_movie_t-1.jpg", "titan_clip_915_000672_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with shops lines a narrow single general-traffic lane with no median; the pavement looks smooth and vehicle flow is very light, effectively calmed by pedestrians in the roadway. A pedestrian in a black dress walks away from the ego vehicle in the center of the lane ahead, occupying the path and constraining progress. Slightly farther ahead to the right, a child moves diagonally across toward the left, likely to enter the ego lane. At the right edge, another adult steps off the sidewalk and starts to cross ahead, adding to the near-term conflict. A small delivery scooter stands parked along the left curb near storefronts, narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a black dress, walking in the middle of the road, away from the ego car. The pedestrian could step into the vehicle's path unexpectedly, so the driver should slow down to avoid a potential collision."}
{"id": "train_00894", "split": "train", "clip_key": "2020-0218-103119_004167_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "004167"}, "frames": ["2020-0218-103119_004167_movie_t-3.jpg", "2020-0218-103119_004167_movie_t-2.jpg", "2020-0218-103119_004167_movie_t-1.jpg", "2020-0218-103119_004167_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban side street lined with leafless trees appears, paved smoothly and undivided, with narrow clearance bounded by curbs, bollards on the left sidewalk, and hedge planters on the right. Traffic is light and steady with no visible oncoming flow. A small white car travels ahead in the same lane at a modest, steady speed, remaining centered and effectively setting the ego vehicle's pace as they proceed along the straight corridor. No other moving road users are apparent, and there are no salient signals or signs in view.", "hazard_reasoning": "No hazards detected in the current scene. No immediate risks require a warning as the road is clear and environment poses no danger to the driver."}
{"id": "train_00895", "split": "train", "clip_key": "2020-0220-151845_037665_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "037665"}, "frames": ["2020-0220-151845_037665_movie_t-3.jpg", "2020-0220-151845_037665_movie_t-2.jpg", "2020-0220-151845_037665_movie_t-1.jpg", "2020-0220-151845_037665_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial runs under an elevated expressway with smooth pavement and a striped buffer on the left; traffic is moderate and slows slightly ahead. A flatbed truck carrying a covered load travels in the ego lane ahead and decelerates as vehicles bunch under the viaduct, matching the note that congestion ahead causes it to slow. To the right, a white SUV in the adjacent lane is slightly ahead and eases off as well, limiting an easy pass. Further right, a beige sedan with brake lights on moves slowly near the barrier, pacing the flow. Pedestrians remain on the left sidewalk behind railings. The viaduct pillars create intermittent sightline occlusions farther ahead.", "hazard_reasoning": "There is a red truck slowing down in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance as the truck ahead reduces speed due to the congestion."}
{"id": "train_00896", "split": "train", "clip_key": "2020-0214-102601_022088_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "022088"}, "frames": ["2020-0214-102601_022088_movie_t-3.jpg", "2020-0214-102601_022088_movie_t-2.jpg", "2020-0214-102601_022088_movie_t-1.jpg", "2020-0214-102601_022088_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the van and wait", "environment_perception": "An urban multilane road approaches a wide signalized intersection with smooth pavement and clear markings, and traffic is queued at the stop line. A black van directly ahead in the ego lane is stopped for the red traffic light, constraining the ego vehicle. To the left front, a black car waits in the adjacent lane at the stop line. A pedestrian in the near-left crosswalk walks across the intersection while vehicles remain stopped. The overhead signal shows red, and a yellow roadside sign on the right reads 50 m ahead, with guardrails along the curb.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of a red traffic light. Since the van is stopped at the red light, the driver should stop to maintain safe following distance and obey the signal."}
{"id": "train_00897", "split": "train", "clip_key": "titan_clip_1161_000474_movie", "source": {"subset": "titan", "scenario": "clip_1161", "frame": "000474"}, "frames": ["titan_clip_1161_000474_movie_t-3.jpg", "titan_clip_1161_000474_movie_t-2.jpg", "titan_clip_1161_000474_movie_t-1.jpg", "titan_clip_1161_000474_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of the pedestrian on the right side", "environment_perception": "A narrow urban commercial street with block-paved surface and no median extends ahead, traffic is light and the 30 marking is painted on the roadway. Shops line both sides and orange cones run along the right edge in the mid distance. A dark van is stopped on the left with its sliding side door open, encroaching slightly into the travel lane and reducing clearance for the ego-vehicle. On the right side near a storefront, a pedestrian wearing a black shirt stands at the curb and remains stationary close to the roadway. The lane ahead is otherwise clear with no moving vehicles immediately affecting pace.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, standing on the right side of the road. The pedestrian may unexpectedly enter the roadway, so the driver should stay alert and be prepared to slow down."}
{"id": "train_00898", "split": "train", "clip_key": "2020-0207-151349_009895_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "009895"}, "frames": ["2020-0207-151349_009895_movie_t-3.jpg", "2020-0207-151349_009895_movie_t-2.jpg", "2020-0207-151349_009895_movie_t-1.jpg", "2020-0207-151349_009895_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with a single left-hand lane in the ego direction runs between mid-rise buildings, with a narrow planted median and a clear zebra crossing; pavement is smooth and traffic is light. A motorcyclist travels ahead in the ego lane at medium distance, continuing straight and modestly pacing the lane. Several pedestrians move along the right sidewalk near the curb by storefronts, close to the crossing area but remaining off the roadway. No oncoming vehicles are visible. Overhead traffic signals span the road above the crosswalk, and a few bicycles are parked along the right curb.", "hazard_reasoning": "No immediate hazards are detected; the road conditions and traffic are stable. Driver can proceed normally while observing the red light and surroundings."}
{"id": "train_00899", "split": "train", "clip_key": "titan_clip_991_000306_movie", "source": {"subset": "titan", "scenario": "clip_991", "frame": "000306"}, "frames": ["titan_clip_991_000306_movie_t-3.jpg", "titan_clip_991_000306_movie_t-2.jpg", "titan_clip_991_000306_movie_t-1.jpg", "titan_clip_991_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A dense urban neighborhood street appears, a narrow two-way road with one lane in each direction and no median; the pavement is smooth and traffic is light with no oncoming vehicles. The ego travels along the left side while parked cars line the right curb, slightly narrowing the lane. On the right side, a pedestrian wearing blue pants walks toward the ego vehicle along the edge of the roadway and may enter the travel path. Bicycles stand parked by the storefronts and no traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing blue pants and walking, on the right side of the road, towards the ego-car. The pedestrian could step into the lane unexpectedly, so the driver should manoeuvre carefully to maintain a safe distance."}
{"id": "train_00900", "split": "train", "clip_key": "2020-0220-151845_033524_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-151845_033524_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-151845_033524_movie_t-3_augB1.jpg", "2020-0220-151845_033524_movie_t-2_augB1.jpg", "2020-0220-151845_033524_movie_t-1_augB1.jpg", "2020-0220-151845_033524_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with good pavement and chevroned guidance where lanes split; traffic is moderate and generally slow. Directly ahead in the ego lane, a red-and-yellow truck slows and the ego car follows at its pace. To the right, a silver van in the adjacent lane travels slightly ahead at low speed, remaining in its lane and not merging. Farther ahead in the right lane, another flatbed truck continues steadily away. A traffic signal structure is visible ahead beneath the viaduct, framing the approach to the next intersection.", "hazard_reasoning": "There is a red and yellow truck slowing in front of the ego car, in the ego lane. You should slow down to maintain a safe following distance because the truck's deceleration may be unexpected."}
{"id": "train_00901", "split": "train", "clip_key": "2020-0210-101957_086061_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "086061"}, "frames": ["2020-0210-101957_086061_movie_t-3.jpg", "2020-0210-101957_086061_movie_t-2.jpg", "2020-0210-101957_086061_movie_t-1.jpg", "2020-0210-101957_086061_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Be aware of slowing concrete mixer truck", "environment_perception": "An urban two-way road with one lane each direction and a center yellow line curves gently right; the pavement is sound with a red-textured section and a zebra crossing flanked by narrow curb islands and bollards, and traffic is light to moderate. Ahead in the ego lane, a brown concrete mixer truck slows, setting the pace for the ego vehicle. On the left, cyclists ride along the separated path beside the curb near the crosswalk, remaining outside the traffic lane but close to the ego path. Oncoming cars travel steadily in the right lane through the bend without encroaching on the ego lane.", "hazard_reasoning": "There is a brown concrete mixer truck slowing down in front of the ego car. The ego-vehicle may need to decelerate quickly to maintain safe distance, so the driver should be aware of the slowing truck."}
{"id": "train_00902", "split": "train", "clip_key": "titan_clip_1184_000336_movie", "source": {"subset": "titan", "scenario": "clip_1184", "frame": "000336"}, "frames": ["titan_clip_1184_000336_movie_t-3.jpg", "titan_clip_1184_000336_movie_t-2.jpg", "titan_clip_1184_000336_movie_t-1.jpg", "titan_clip_1184_000336_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "An urban neighborhood street with a single narrow two-way carriageway has smooth pavement and light traffic, and the ego-vehicle proceeds in the left lane with no divider while the oncoming lane remains clear. On the right shoulder ahead, a white van is parked for unloading, narrowing the usable width as it occupies part of the edge. Farther ahead near the centerline, a small white work truck stands stationary in the lane, constraining the passing space in front of the ego car. On the left sidewalk, a pedestrian near the curb walks along the road but stays out of the lane and does not impede progress. Orange cones and taped barriers line the right side by a building, marking roadside work and limiting clearance.", "hazard_reasoning": "There is a white van parked on the right side of the road because it is being unloaded. It reduces available road width and may obstruct the driver's path, so careful manoeuvring is needed."}
{"id": "train_00903", "split": "train", "clip_key": "2020-0203-154554_039168_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "039168"}, "frames": ["2020-0203-154554_039168_movie_t-3.jpg", "2020-0203-154554_039168_movie_t-2.jpg", "2020-0203-154554_039168_movie_t-1.jpg", "2020-0203-154554_039168_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial runs under an elevated expressway with concrete side walls, two lanes in the ego vehicle's direction, and dry, smooth pavement; traffic moves at a slow, steady pace. A white box truck ahead in the ego lane slows and then creeps forward, directly setting the ego car's pace. To the right, a white van slightly ahead proceeds slowly in the adjacent lane, roughly parallel to the truck and occupying the space beside the ego lane. Farther ahead in the right lane, a small car continues steadily away from the camera. Pedestrians walk along the left-side sidewalk behind a barrier, remaining separated from the roadway.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe distance and respond to the decreased speed of the truck ahead."}
{"id": "train_00904", "split": "train", "clip_key": "2020-0131-103016_012934_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "012934"}, "frames": ["2020-0131-103016_012934_movie_t-3.jpg", "2020-0131-103016_012934_movie_t-2.jpg", "2020-0131-103016_012934_movie_t-1.jpg", "2020-0131-103016_012934_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with two lanes each direction and a painted center line runs beneath a pedestrian footbridge; the pavement is dry and smooth, and traffic is light with steady flow. Ahead in the ego lane, a black van slows and shifts right to maneuver around a white van parked at the left curb, briefly constraining the ego vehicle. Farther ahead in the same direction, a small truck and several cars maintain speed and continue straight. In the opposite lanes, oncoming cars approach under the footbridge with regular spacing and remain separated by the center markings.", "hazard_reasoning": "There is a black van slowing down in the left lane, because it is maneuvering around a parked vehicle. You should slow down to safely navigate around the parked vehicle and avoid a potential collision with the slowing van."}
{"id": "train_00905", "split": "train", "clip_key": "titan_clip_575_000450_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_575_000450_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_575_000450_movie_t-3_augB1.jpg", "titan_clip_575_000450_movie_t-2_augB1.jpg", "titan_clip_575_000450_movie_t-1_augB1.jpg", "titan_clip_575_000450_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist", "environment_perception": "An urban two-way street with no median approaches a small intersection marked by a zebra crossing; the pavement looks smooth and traffic is light. A cyclist from the right crosses the crosswalk leftward directly in front of the ego vehicle, pedaling steadily and occupying the ego lane. Farther ahead near the intersection, a cyclist wearing a black shirt rides toward the ego along the middle of the narrow roadway, reducing clearance for the ego's approach. A 30 km/h speed-limit sign is posted on the right.", "hazard_reasoning": "There is a cyclist wearing a black shirt, cycling near the intersection, towards the ego car. The cyclist may enter the vehicle's lane as you approach, so you should yield to avoid a collision under this situation."}
{"id": "train_00906", "split": "train", "clip_key": "2020-0217-110854_075730_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "075730"}, "frames": ["2020-0217-110854_075730_movie_t-3.jpg", "2020-0217-110854_075730_movie_t-2.jpg", "2020-0217-110854_075730_movie_t-1.jpg", "2020-0217-110854_075730_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two to three same-direction lanes curves gently right; the pavement is dry and clear, and traffic flow is light. A white truck drives ahead in the ego lane, moving away from the camera and pacing the ego vehicle. At the left curb closer to the ego car, a small white van is stopped near the lane edge, tightening clearance along the side of the ego lane. Farther ahead in the adjacent right lane, another white van travels steadily in the same direction but remains outside the ego path. An overhead circular sign posts 50.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. Following the vehicle ahead will help maintain a safe distance and anticipate its speed changes."}
{"id": "train_00907", "split": "train", "clip_key": "titan_clip_986_000330_movie", "source": {"subset": "titan", "scenario": "clip_986", "frame": "000330"}, "frames": ["titan_clip_986_000330_movie_t-3.jpg", "titan_clip_986_000330_movie_t-2.jpg", "titan_clip_986_000330_movie_t-1.jpg", "titan_clip_986_000330_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban neighborhood street with buildings tight to the curb; the ego-vehicle proceeds along a narrow two-way road with no centerline and white edge lines on smooth, dry pavement. Traffic is light with no moving vehicles in either direction. A pedestrian ahead near the left edge walks along the roadway in the same direction, close to the lane and could step inward. A small group of pedestrians farther ahead on the right stands by storefronts and walks intermittently but stays at the curb, not impeding the path. On the right shoulder, a covered scooter, parked bicycles, and a parked sedan occupy space and slightly narrow the passage.", "hazard_reasoning": "No specific hazards are detected in the scene, as there are no moving vehicles or obstacles requiring immediate action."}
{"id": "train_00908", "split": "train", "clip_key": "2020-0213-143552_020478_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "020478"}, "frames": ["2020-0213-143552_020478_movie_t-3.jpg", "2020-0213-143552_020478_movie_t-2.jpg", "2020-0213-143552_020478_movie_t-1.jpg", "2020-0213-143552_020478_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement carries slow traffic; the ego car proceeds in the left lane, which is edged by a narrow divider with red-and-white bollards, and flow bunches near an intersection ahead. A black covered truck directly ahead in the ego lane slows because congestion builds in front of it, constraining the ego vehicle's pace. To the left, a white SUV in the curbside lane creeps forward beside the ego car near storefronts. In the adjacent lane to the right, a light-colored car advances slowly in parallel toward the point where the bollards end. Overhead traffic signals and destination signs mark the junction ahead.", "hazard_reasoning": "There is a black truck slowing in the ego-car lane, because of traffic congestion ahead. The truck's deceleration indicates upcoming congestion, so you should slow down to maintain a safe following distance."}
{"id": "train_00909", "split": "train", "clip_key": "2020-0218-103119_051106_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "051106"}, "frames": ["2020-0218-103119_051106_movie_t-3.jpg", "2020-0218-103119_051106_movie_t-2.jpg", "2020-0218-103119_051106_movie_t-1.jpg", "2020-0218-103119_051106_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with no physical median approaches a signalized intersection, with clean pavement and heavy traffic that begins to roll. A white box truck directly ahead in the ego lane starts to move as congestion eases and controls the ego car's pace. To the left, a white van in the adjacent same-direction lane creeps forward alongside the ego vehicle. On the right, a gray car in a dedicated right-turn lane accelerates through the intersection and remains outside the ego lane.", "hazard_reasoning": "There is a white truck starting to drive in the ego lane in front of the ego car, because traffic congestion ahead is easing. To maintain a safe following distance and avoid sudden merge conflicts, start moving promptly when safe."}
{"id": "train_00910", "split": "train", "clip_key": "2020-0225-102455_009419_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "009419"}, "frames": ["2020-0225-102455_009419_movie_t-3.jpg", "2020-0225-102455_009419_movie_t-2.jpg", "2020-0225-102455_009419_movie_t-1.jpg", "2020-0225-102455_009419_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban two-way street with one lane per direction and a double white painted median passes between mid-rise buildings; the pavement is dry and smooth, and traffic is moderate with brief slowdowns. A gray dump truck directly ahead in the ego lane slows because of congestion ahead and sets the ego car's pace. To the right, an oncoming white van proceeds straight in its opposite lane, remaining separated by the median. Along the left curb farther ahead, a silver car and a darker taxi wait at the roadside, narrowing edge space but staying outside the travel lane. A large 50 marking on the roadway indicates the posted speed for this section.", "hazard_reasoning": "There's a gray truck slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance due to reduced speeds and potential sudden stops in the congested traffic ahead."}
{"id": "train_00911", "split": "train", "clip_key": "titan_clip_1300_000156_movie", "source": {"subset": "titan", "scenario": "clip_1300", "frame": "000156"}, "frames": ["titan_clip_1300_000156_movie_t-3.jpg", "titan_clip_1300_000156_movie_t-2.jpg", "titan_clip_1300_000156_movie_t-1.jpg", "titan_clip_1300_000156_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked truck obstructing view", "environment_perception": "A dense urban commercial street features a single narrow lane with no centerline; the gray block pavement is dry and traffic is light, slowed by curbside activity. Along the left side near the ego, a line of white vans and utility trucks remain parked, reducing the usable width. Ahead on the left, a white truck is parking at the curb, coming to rest partly in the lane and narrowing the passage for the ego vehicle. Pedestrians walk along the right sidewalk behind bollards and trees, staying off the roadway.", "hazard_reasoning": "There is a white truck parking on the left side of the road. The parked white truck reduces visibility of oncoming traffic and potential hazards, so the driver should remain cautious and anticipate any sudden obstacles."}
{"id": "train_00912", "split": "train", "clip_key": "2020-0131-103016_010488_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "010488"}, "frames": ["2020-0131-103016_010488_movie_t-3.jpg", "2020-0131-103016_010488_movie_t-2.jpg", "2020-0131-103016_010488_movie_t-1.jpg", "2020-0131-103016_010488_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban junction under an elevated railway sees lanes converging to pass beneath the bridge; the pavement is dry and traffic is moderate with a brief slowdown at the merge. A black sedan directly ahead in the ego lane slows because a vehicle is merging into the flow ahead, constraining our speed. To the right at the taper, a white van inches forward to join the same-direction lane under the overpass and may enter our path. Farther ahead under the bridge, a small truck proceeds slowly in the same direction, contributing to the queue. A 40 km/h limit sign and a 4.0 m clearance board are visible, and plastic bollards and paint guide the merge.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of a vehicle merging into the traffic ahead. You should slow down to maintain a safe following distance and accommodate the merging traffic."}
{"id": "train_00913", "split": "train", "clip_key": "titan_clip_646_000444_movie", "source": {"subset": "titan", "scenario": "clip_646", "frame": "000444"}, "frames": ["titan_clip_646_000444_movie_t-3.jpg", "titan_clip_646_000444_movie_t-2.jpg", "titan_clip_646_000444_movie_t-1.jpg", "titan_clip_646_000444_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway and no divider runs between low-rise shops; the pavement is smooth and traffic is light with no vehicles ahead. A pedestrian in a black shirt and white skirt walks away from the camera along the left green shoulder under an umbrella, staying by the curb. On the right edge, two women walk toward the camera near the corner, close to the travel lane and likely to influence speed as the car approaches. Farther ahead, several pedestrians move near a zebra crossing that spans the ego lane. A parked bicycle and storefronts line the right side of the road.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and a white skirt, walking on the right side of the road away from the ego car. The pedestrian's proximity to the roadway and her direction of travel could bring her into the vehicle's path, requiring the driver to manoeuvre safely around her under the current speed."}
{"id": "train_00914", "split": "train", "clip_key": "titan_clip_770_000342_movie", "source": {"subset": "titan", "scenario": "clip_770", "frame": "000342"}, "frames": ["titan_clip_770_000342_movie_t-3.jpg", "titan_clip_770_000342_movie_t-2.jpg", "titan_clip_770_000342_movie_t-1.jpg", "titan_clip_770_000342_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian on roadway", "environment_perception": "An urban back street with a single narrow two-way carriageway runs between tall buildings; the pavement is intact and traffic is light but the lane is constricted by parked vehicles. A white van ahead in the ego lane proceeds slowly, shaping the ego vehicle's speed in the tight space. On the left, a red hatchback stands parked near the curb, narrowing the usable lane and pushing traffic toward the center. On the right, a pedestrian in a white T-shirt and cap walks toward the ego along the edge of the road where there is effectively no sidewalk, and may step into the lane. Farther ahead, a small group of pedestrians drifts near the lane center by storefronts, potentially entering the ego vehicle's path.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, wearing a cap, walking on the right side of the road, towards the ego car, because there is no sidewalk. The pedestrian's position on the roadway and the narrowed road increase collision risk, so the driver should stay vigilant under this situation."}
{"id": "train_00915", "split": "train", "clip_key": "2020-0210-155354_039044_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "039044"}, "frames": ["2020-0210-155354_039044_movie_t-3.jpg", "2020-0210-155354_039044_movie_t-2.jpg", "2020-0210-155354_039044_movie_t-1.jpg", "2020-0210-155354_039044_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban four-lane arterial with two lanes per direction runs between tall apartment blocks, divided by double white center lines; the pavement looks smooth and traffic is moderate. A white flatbed truck ahead in the ego lane proceeds steadily toward a green signal, effectively setting the ego car's pace. In the adjacent right same-direction lane a gray car slightly ahead continues straight, moving past the ego vehicle without drifting lanes. In the opposing lanes to the right, several cars and vans approach in a steady stream, clearly separated by the center lines. A pedestrian walks along the left sidewalk, away from the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane in front of the ego car, because of the green traffic light. The truck may decelerate or stop unexpectedly if the signal changes, so the driver should maintain awareness and a safe following distance under this situation."}
{"id": "train_00916", "split": "train", "clip_key": "2020-0204-150838_042344_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "042344"}, "frames": ["2020-0204-150838_042344_movie_t-3.jpg", "2020-0204-150838_042344_movie_t-2.jpg", "2020-0204-150838_042344_movie_t-1.jpg", "2020-0204-150838_042344_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane boulevard with smooth pavement runs straight between tall buildings, separated from oncoming lanes by a planted median; traffic is light to moderate as the approach to a signalized intersection continues on green. In the ego lane ahead, a white van drives away, continuing through the junction on the green light and modestly setting the ego vehicle's pace. In the adjacent lane ahead-left, a green city bus proceeds straight at similar speed, remaining parallel and not encroaching on the ego lane. Pedestrians on the right sidewalk stay behind a metal fence and do not interact with the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00917", "split": "train", "clip_key": "titan_clip_267_000744_movie", "source": {"subset": "titan", "scenario": "clip_267", "frame": "000744"}, "frames": ["titan_clip_267_000744_movie_t-3.jpg", "titan_clip_267_000744_movie_t-2.jpg", "titan_clip_267_000744_movie_t-1.jpg", "titan_clip_267_000744_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian on road", "environment_perception": "An urban back street with a single-lane two-way road and no median runs between low-rise buildings; the pavement is smooth and traffic is very light with no oncoming vehicles. Ahead on the left side of the lane, a pedestrian in a white shirt and black pants carrying a suitcase walks away from the ego vehicle, occupying the travel path and constraining speed. Farther ahead near the center, another pedestrian proceeds in the same direction within the lane. Parked bicycles and planters line the right edge, narrowing clearance.", "hazard_reasoning": "There is a male pedestrian wearing a white shirt, black pants and carrying a suitcase, walking on the left side of the road, away from the ego car. The pedestrian is on the road and may change direction or step into the vehicle's path, so the driver should be cautious."}
{"id": "train_00918", "split": "train", "clip_key": "2020-0226-140503_038864_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "038864"}, "frames": ["2020-0226-140503_038864_movie_t-3.jpg", "2020-0226-140503_038864_movie_t-2.jpg", "2020-0226-140503_038864_movie_t-1.jpg", "2020-0226-140503_038864_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of the white van", "environment_perception": "An urban multi-lane two-way road approaches a signalized intersection with smooth pavement and moderate traffic. A white sedan ahead in the ego lane proceeds toward the junction at a steady pace, effectively setting the ego vehicle's speed. There is a white van driving alongside the ego car in the left lane, holding parallel position and preventing an easy merge left. A bicyclist travels ahead near the left curb in the same direction toward the intersection, close enough that it could drift into the travel lane. On the right side, several oncoming cars move through the intersection in their lanes without conflicting with the ego path. Orange cones line the roadside but stay outside the roadway.", "hazard_reasoning": "There is a white van driving alongside the ego car, in the left lane. The van could merge into the ego lane unexpectedly, so the driver should be cautious of its potential lane change."}
{"id": "train_00919", "split": "train", "clip_key": "2020-0214-102601_079996_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "079996"}, "frames": ["2020-0214-102601_079996_movie_t-3.jpg", "2020-0214-102601_079996_movie_t-2.jpg", "2020-0214-102601_079996_movie_t-1.jpg", "2020-0214-102601_079996_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with narrow lanes and a painted centerline runs past small shops; pavement appears smooth and traffic is light to moderate at a slow pace. Ahead in the left-hand ego lane, a black SUV slows and constrains our speed. Farther ahead in the opposite lane, a white box truck approaches steadily as oncoming traffic. On the left shoulder near a parked black van, a pedestrian walks along the edge but stays outside the travel lane. Parked vehicles tighten lateral space.", "hazard_reasoning": "There is a black SUV slowing down in the ego lane. The SUV's deceleration ahead could require you to reduce speed to avoid a rear-end collision, so you should prepare to slow down under this situation."}
{"id": "train_00920", "split": "train", "clip_key": "titan_clip_783_000192_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_783_000192_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_783_000192_movie_t-3_augB1.jpg", "titan_clip_783_000192_movie_t-2_augB1.jpg", "titan_clip_783_000192_movie_t-1_augB1.jpg", "titan_clip_783_000192_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban, narrow two-way street with one lane each way has smooth pavement and light vehicle traffic, with a signalized intersection visible ahead. The ego lane is partially blocked on the left by a white van stopped with its rear open and a ramp deployed while people load it, encroaching into the lane. Ahead in the middle of the road, two women wearing white shirts carry handbags and walk away from the ego vehicle, moving there to pass the stopped van, and they occupy the ego path. Several pedestrians cluster near the van at the left edge and occasionally step close to the carriageway as they handle items. On the right, a group stands outside a convenience store by rows of parked bicycles, remaining on the sidewalk.", "hazard_reasoning": "There are two women wearing white shirts, carrying handbags, and walking in the middle of the road away from the ego-car, because of the white van parked on the left side. The driver should slow down to maintain a safe speed and avoid colliding with pedestrians walking in the lane."}
{"id": "train_00921", "split": "train", "clip_key": "2020-0131-135401_040990_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "040990"}, "frames": ["2020-0131-135401_040990_movie_t-3.jpg", "2020-0131-135401_040990_movie_t-2.jpg", "2020-0131-135401_040990_movie_t-1.jpg", "2020-0131-135401_040990_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban two-way road with two lanes in the ego direction approaches a signalized intersection on smooth pavement, and traffic is moderate, queued at a red light. A white hatchback directly ahead in the ego lane is stopped, controlling the ego vehicle's pace. Farther ahead a red van and a white box truck wait in the same line near the intersection, keeping the flow halted. A man wearing a white jacket and jeans walks from left to right across the crosswalk in front of the queue because the signal is red, momentarily occupying the ego lane. The overhead signal facing the ego shows red.", "hazard_reasoning": "There is a man wearing a white jacket and jeans, and walking across a crosswalk from left to right, because of the red traffic light. The pedestrian is entering the crosswalk against a red light, so the driver should yield to avoid a potential collision."}
{"id": "train_00922", "split": "train", "clip_key": "2020-0207-101955_055111_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "055111"}, "frames": ["2020-0207-101955_055111_movie_t-3.jpg", "2020-0207-101955_055111_movie_t-2.jpg", "2020-0207-101955_055111_movie_t-1.jpg", "2020-0207-101955_055111_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban divided arterial with two same-direction lanes runs past mid-rise buildings; a hedge median lines the right and the dry pavement is in good condition as traffic slows into congestion ahead. A black sedan directly ahead in the ego lane is slowing because of traffic backing up, constraining the ego vehicle's pace. A white compact car in the adjacent left lane rolls forward slowly alongside and begins to pull ahead of the queue. Farther ahead, a short line of vehicles under the pedestrian overpass creeps toward the next junction. Overhead blue direction signs indicate expressway routes E17 and C3 at 150 m.", "hazard_reasoning": "The black sedan is slowing down in the ego lane because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision as traffic ahead has reduced speed."}
{"id": "train_00923", "split": "train", "clip_key": "2020-0205-103411_077893_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "077893"}, "frames": ["2020-0205-103411_077893_movie_t-3.jpg", "2020-0205-103411_077893_movie_t-2.jpg", "2020-0205-103411_077893_movie_t-1.jpg", "2020-0205-103411_077893_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs through mid-rise buildings with a hedge median separating oncoming traffic; the pavement looks smooth and traffic is moderate with a brief slowdown. A black box truck ahead in the ego lane slows because of congestion ahead and sets the pace. In the adjacent left lane, a white delivery truck slightly ahead continues straight at a similar speed, remaining parallel to the black truck. A silver car travels alongside on the far left and gradually overtakes.", "hazard_reasoning": "There is a black truck slowing in the ego lane because of traffic congestion ahead on the road. The slowing truck signals reduced flow ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_00924", "split": "train", "clip_key": "2020-0131-135401_066725_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "066725"}, "frames": ["2020-0131-135401_066725_movie_t-3.jpg", "2020-0131-135401_066725_movie_t-2.jpg", "2020-0131-135401_066725_movie_t-1.jpg", "2020-0131-135401_066725_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of van changing lanes", "environment_perception": "An urban arterial with three same-direction lanes runs on dry, smooth pavement beside an elevated expressway to the right, and traffic appears light to moderate. Ahead, a white van in the ego lane moves right across the dashed line, changing into the adjacent right lane and clearing our path. On the near right, a white box truck continues straight in that right lane alongside the merge. Farther ahead, a dark car proceeds in the right lane at a similar speed.", "hazard_reasoning": "There is a white van changing lanes from the ego lane to the right lane. The driver should be aware because the van may cut into the ego lane and require timely adjustments."}
{"id": "train_00925", "split": "train", "clip_key": "2020-0210-101957_057856_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "057856"}, "frames": ["2020-0210-101957_057856_movie_t-3.jpg", "2020-0210-101957_057856_movie_t-2.jpg", "2020-0210-101957_057856_movie_t-1.jpg", "2020-0210-101957_057856_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a painted center line and smooth pavement runs straight under a pedestrian overpass; traffic is moderate and starting to move more smoothly. A white sedan directly ahead in the ego lane accelerates gently as congestion eases and sets the ego car's pace. Farther ahead in the same lane, a concrete mixer truck rolls slowly, which limits the following queue. In the adjacent right lane, a black hatchback is slightly ahead and to the right, gradually moving past the ego vehicle while keeping within its lane. Oncoming traffic flows in the lanes to the far right beyond the center line and does not interfere. Directional signs at the left verge point toward an interchange.", "hazard_reasoning": "A white sedan is driving in front of the ego car in the ego lane, because congestion is easing. As traffic flow resumes, the sedan may accelerate or change speed unexpectedly, so the driver should start moving to maintain safe following distance."}
{"id": "train_00926", "split": "train", "clip_key": "titan_clip_121_000552_movie", "source": {"subset": "titan", "scenario": "clip_121", "frame": "000552"}, "frames": ["titan_clip_121_000552_movie_t-3.jpg", "titan_clip_121_000552_movie_t-2.jpg", "titan_clip_121_000552_movie_t-1.jpg", "titan_clip_121_000552_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street without a center divider runs between tall buildings, the pavement is worn and patched, and traffic is light as the ego car keeps to the left. Ahead on the right, a pedestrian wearing a hard hat stands at the edge of the roadway in front of the ego car by a roadside construction area, narrowing the usable lane. Another man on the right foreground waits beside parked bicycles at the curb, close to the travel path but stationary. Farther ahead in the same direction, a small white van continues toward the cross street and does not impede the ego vehicle. Construction materials line the right side.", "hazard_reasoning": "There is a pedestrian wearing a hard hat and standing on the right side of the road, in front of the ego-car, because of construction work on the right side. This pedestrian may step into the lane unexpectedly due to nearby construction, so the driver should slow down to maintain safe reaction distance."}
{"id": "train_00927", "split": "train", "clip_key": "titan_clip_159_000576_movie", "source": {"subset": "titan", "scenario": "clip_159", "frame": "000576"}, "frames": ["titan_clip_159_000576_movie_t-3.jpg", "titan_clip_159_000576_movie_t-2.jpg", "titan_clip_159_000576_movie_t-1.jpg", "titan_clip_159_000576_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to crossing pedestrian.", "environment_perception": "A narrow urban commercial street with a single undivided lane and smooth pavement shows very light traffic with no vehicles present. Ahead slightly left, a pedestrian wearing a blue shirt walks away in the roadway near a pedestrian crossing and then drifts across the lane, potentially entering the ego vehicle's path. On the left edge, another person with a parasol stands by the curb beside shop signs and remains stationary. Farther ahead along the left sidewalk, a few pedestrians continue away from the camera, staying out of the lane. Shopfront boards line the edges, and no traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and crossing the street, away from the ego-car, on left side at the pedestrian crossing. The driver should yield because the pedestrian has the right of way at the marked crosswalk to avoid collision."}
{"id": "train_00928", "split": "train", "clip_key": "2020-0214-145407_068800_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "068800"}, "frames": ["2020-0214-145407_068800_movie_t-3.jpg", "2020-0214-145407_068800_movie_t-2.jpg", "2020-0214-145407_068800_movie_t-1.jpg", "2020-0214-145407_068800_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a planted median and worn but intact pavement carries heavy, slow-moving traffic. A white sedan ahead in the ego lane slows because a line of vehicles stacks up further ahead, constraining our pace. A black sedan slightly ahead to the left proceeds straight at a similar speed, occupying the adjacent lane and limiting room to change lanes. On the far side of the median, oncoming cars move steadily in the opposite direction, clearly separated from our path.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a collision as the leading vehicle reduces speed due to congestion."}
{"id": "train_00929", "split": "train", "clip_key": "titan_clip_834_000468_movie", "source": {"subset": "titan", "scenario": "clip_834", "frame": "000468"}, "frames": ["titan_clip_834_000468_movie_t-3.jpg", "titan_clip_834_000468_movie_t-2.jpg", "titan_clip_834_000468_movie_t-1.jpg", "titan_clip_834_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way shared street with brick paving runs between tall buildings, with no centerline or median; traffic is light and slow, mostly cyclists and pedestrians. A male pedestrian in a brown coat with black shoes, carrying a black case, walks along the left side ahead in the ego lane, moving away and occupying part of the path. A cyclist approaches in the middle of the roadway ahead, heading toward the ego and potentially meeting at close range. Another cyclist farther ahead near the right edge travels in the same direction as the ego, keeping to the side. Several pedestrians farther ahead walk along and across the lane. A white car sits parked in a recess on the left, and decorative street lamps and an overhead arch line the street.", "hazard_reasoning": "There is a male pedestrian, in a brown coat, black shoes and carrying a black case, walking down the left side of the road, in the ego lane. The pedestrian's position in the travel lane poses a potential collision risk, so the driver should manoeuvre carefully around them."}
{"id": "train_00930", "split": "train", "clip_key": "2020-0205-103411_051952_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "051952"}, "frames": ["2020-0205-103411_051952_movie_t-3.jpg", "2020-0205-103411_051952_movie_t-2.jpg", "2020-0205-103411_051952_movie_t-1.jpg", "2020-0205-103411_051952_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road approaches a large intersection, the pavement smooth and dry, and traffic is moderate as vehicles queue at the signal. A black hatchback directly ahead in the ego lane is stopped because the light is red, holding the ego vehicle in place. In the adjacent same-direction lane to the left, a dark wagon edges forward past the queue. Farther ahead in the left lanes, a white box truck waits near the intersection as part of the lineup. On the far right of the junction, a cyclist rides along the side street and remains outside the ego path. An overhead pedestrian bridge spans the road.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The ego vehicle must stop to avoid a collision and comply with the red signal."}
{"id": "train_00931", "split": "train", "clip_key": "2020-0218-151547_002443_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "002443"}, "frames": ["2020-0218-151547_002443_movie_t-3.jpg", "2020-0218-151547_002443_movie_t-2.jpg", "2020-0218-151547_002443_movie_t-1.jpg", "2020-0218-151547_002443_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "In a dense urban corridor, the ego car travels in the right of two same-direction lanes, bordered by a curb to the left and a concrete median to the right; the pavement is dry and traffic is heavy and slow toward a signalized junction. A silver hatchback directly ahead in the ego lane is stopped because the overhead light is red, holding the ego vehicle at the line. A white van in the parallel left lane lingers slightly behind and creeps forward alongside without impeding the ego car. Beyond the median to the right, a queue of cars inches ahead but remains separated. The traffic lights ahead display red.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light. Drivers should stop to avoid colliding with the halted vehicle at the red light."}
{"id": "train_00932", "split": "train", "clip_key": "titan_clip_1086_000018_movie", "source": {"subset": "titan", "scenario": "clip_1086", "frame": "000018"}, "frames": ["titan_clip_1086_000018_movie_t-3.jpg", "titan_clip_1086_000018_movie_t-2.jpg", "titan_clip_1086_000018_movie_t-1.jpg", "titan_clip_1086_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban side street in Japan with a single narrow two-way lane and no median runs between close buildings; the pavement looks worn but intact, and traffic is light with no moving vehicles. Ahead on the right edge of the lane, a pedestrian in a blue shirt carries an umbrella and walks away from the ego vehicle along the roadway, staying near the curb and potentially constraining the ego lane. No other road users are apparent. A utility pole and several orange cones sit at the right curb, slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, carrying an umbrella, walking on the right side of the road, away from the ego car. The pedestrian could unexpectedly step into the lane, so the driver should manoeuvre carefully to avoid a collision."}
{"id": "train_00933", "split": "train", "clip_key": "titan_clip_1296_000546_movie", "source": {"subset": "titan", "scenario": "clip_1296", "frame": "000546"}, "frames": ["titan_clip_1296_000546_movie_t-3.jpg", "titan_clip_1296_000546_movie_t-2.jpg", "titan_clip_1296_000546_movie_t-1.jpg", "titan_clip_1296_000546_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban two-lane two-way road curves right past construction fencing and industrial buildings, divided by double yellow lines with smooth pavement; traffic is light and the ego lane stays open. A silver van ahead approaches in the oncoming lane near the centerline as it follows the bend, becoming the main opposing presence. A black sedan farther right also travels toward the camera in the oncoming lane, passing by without encroaching. On the left sidewalk, two pedestrians walk behind a guardrail along the fence. The roadway has no marked bike lane.", "hazard_reasoning": "There is a male cyclist on a blue bike, on the left side of the road, in the ego lane, cycling towards the ego-car, because there is no bike lane. The driver should carefully manoeuvre to avoid colliding with the cyclist in the ego lane."}
{"id": "train_00934", "split": "train", "clip_key": "titan_clip_1155_000258_movie", "source": {"subset": "titan", "scenario": "clip_1155", "frame": "000258"}, "frames": ["titan_clip_1155_000258_movie_t-3.jpg", "titan_clip_1155_000258_movie_t-2.jpg", "titan_clip_1155_000258_movie_t-1.jpg", "titan_clip_1155_000258_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban single-carriageway street with narrow lanes and no median comes into view, the pavement smooth and overall traffic light with no moving vehicles close by. A pedestrian wearing a white shirt and black pants pulls a suitcase along the right side ahead, walking away from the ego car and close to the travel line. Farther ahead near the center, another person with luggage proceeds in the same direction, slowing the approach. A silver van is parked along the left curb near the camera, narrowing the usable lane. A large 30 speed marking is painted on the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, pulling a suitcase, and walking, on the right side of the road, away from the ego car. The pedestrian could suddenly step into the travel lane, so the driver should slow down to avoid a collision."}
{"id": "train_00935", "split": "train", "clip_key": "2020-0131-135401_002718_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "002718"}, "frames": ["2020-0131-135401_002718_movie_t-3.jpg", "2020-0131-135401_002718_movie_t-2.jpg", "2020-0131-135401_002718_movie_t-1.jpg", "2020-0131-135401_002718_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with one lane each direction runs between low-rise buildings; the pavement is dry and traffic is light. A white box truck directly ahead in the ego lane slows at the crosswalk, constraining the ego vehicle's pace. Farther ahead, a white van proceeds slowly toward us in the opposing lane while keeping to its side. Along the right edge, a large silver box truck is stopped at the curb beside the crosswalk, narrowing the roadway and partially blocking sightlines to the right.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The truck's reduced speed could require abrupt braking, so slow down to maintain a safe following distance."}
{"id": "train_00936", "split": "train", "clip_key": "2020-0129-144857_010725_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "010725"}, "frames": ["2020-0129-144857_010725_movie_t-3.jpg", "2020-0129-144857_010725_movie_t-2.jpg", "2020-0129-144857_010725_movie_t-1.jpg", "2020-0129-144857_010725_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way road approaches a signalized intersection, the asphalt smooth and traffic moderate. The ego travels in a left-side same-direction lane. A silver hatchback is stopped directly ahead in the ego lane, waiting to turn right, so it blocks the lane. To the right, a gray SUV in the adjacent same-direction lane continues straight through the junction, passing the stopped car and setting the prevailing flow. Along the left edge near the crosswalk, a scooter rider moves ahead beside the queue. In the oncoming lanes to the right of center, several cars travel through the intersection, limiting gaps for the right turn that the hatchback awaits.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, in the ego lane, because it is waiting to turn right. The driver must stop to avoid colliding with the stationary hatchback and comply with the red traffic light."}
{"id": "train_00937", "split": "train", "clip_key": "titan_clip_1175_000450_movie", "source": {"subset": "titan", "scenario": "clip_1175", "frame": "000450"}, "frames": ["titan_clip_1175_000450_movie_t-3.jpg", "titan_clip_1175_000450_movie_t-2.jpg", "titan_clip_1175_000450_movie_t-1.jpg", "titan_clip_1175_000450_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban construction area confines a narrow unmarked lane with worn pavement, lined by white-and-green barriers and orange cones, and the road curves slightly right; there is no motor traffic. Directly ahead in the ego lane, a pedestrian walks toward the vehicle, occupying the path. On the right beside the cones, another pedestrian moves diagonally toward the lane and may step into the ego path. Farther ahead near the right fence, a third pedestrian walks away along the edge without encroaching. A round prohibition sign is mounted on the left, and the worksite barriers limit visibility.", "hazard_reasoning": "There is a pedestrian in front of the ego car, wearing black pants and a white shirt, walking toward the ego car. The pedestrian is crossing the vehicle's path, so the driver should slow down to maintain a safe distance."}
{"id": "train_00938", "split": "train", "clip_key": "2020-0228-102841_028143_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "028143"}, "frames": ["2020-0228-102841_028143_movie_t-3.jpg", "2020-0228-102841_028143_movie_t-2.jpg", "2020-0228-102841_028143_movie_t-1.jpg", "2020-0228-102841_028143_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane each way approaches a zebra crossing at an intersection; the pavement is clean and traffic is light. A pedestrian ahead in the crosswalk moves from right to left across the ego lane, occupying the path and constraining progress. Farther ahead, a woman cyclist in a black coat rides toward the ego vehicle near the middle of the road in the oncoming direction, approaching the intersection and potentially entering the ego path. Another pedestrian walks along the far-right sidewalk and remains clear. Construction cones and barriers line the left sidewalk beneath a footbridge, narrowing the roadside.", "hazard_reasoning": "There is a woman cyclist wearing a black coat and cycling in the middle of the road towards the ego car. You should stop because she is riding directly in your path and may cross unexpectedly."}
{"id": "train_00939", "split": "train", "clip_key": "titan_clip_465_000354_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_465_000354_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_465_000354_movie_t-3_augB1.jpg", "titan_clip_465_000354_movie_t-2_augB1.jpg", "titan_clip_465_000354_movie_t-1_augB1.jpg", "titan_clip_465_000354_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban commercial street with a single narrow lane and block-paved surface lacks a center divider, and bollards line both curbs; there is no motor traffic while pedestrian flow is moderate. Ahead on the right, a pedestrian wearing a white shirt and carrying a backpack walks away along the roadway, remaining in the ego vehicle's path. Farther ahead, several pedestrians move along the right curb near shopfronts and a caf area, edging toward the lane and reducing usable width. On the left, pedestrians continue along the sidewalk beside parked bicycles, staying near the curb and posing little immediate interaction.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, walking on the right side of the road, away from the ego car. The driver should manoeuvre carefully around the pedestrian to maintain safety."}
{"id": "train_00940", "split": "train", "clip_key": "titan_clip_346_000486_movie", "source": {"subset": "titan", "scenario": "clip_346", "frame": "000486"}, "frames": ["titan_clip_346_000486_movie_t-3.jpg", "titan_clip_346_000486_movie_t-2.jpg", "titan_clip_346_000486_movie_t-1.jpg", "titan_clip_346_000486_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A dense urban shopping street appears with a narrow single-lane one-way road paved with interlocking bricks; there is no sidewalk, and motor traffic is absent while pedestrian flow is moderate. Several pedestrians ahead in the middle of the lane walk away from the camera at a slow pace, occupying the path and limiting progress. On the right edge, a man in a blue shirt carrying a backpack walks away from the ego car along the roadway because there is no sidewalk, remaining close to the curb. Another pedestrian on the right walks toward the ego along the edge, briefly narrowing the usable lane. A blue straight-ahead sign is posted at the left corner, and storefront displays with orange cones encroach slightly into the roadway.", "hazard_reasoning": "There is a man wearing a blue shirt, carrying a backpack, and walking on the right side of the road, away from the ego car because there is no sidewalk. He is walking directly in the vehicle's path due to lack of sidewalk, increasing collision risk and requiring the driver to carefully manoeuvre around him."}
{"id": "train_00941", "split": "train", "clip_key": "titan_clip_1149_000438_movie", "source": {"subset": "titan", "scenario": "clip_1149", "frame": "000438"}, "frames": ["titan_clip_1149_000438_movie_t-3.jpg", "titan_clip_1149_000438_movie_t-2.jpg", "titan_clip_1149_000438_movie_t-1.jpg", "titan_clip_1149_000438_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban residential two-way street with a single shared lane and smooth pavement is shown, and traffic is light as the car proceeds on the left. A cyclist ahead in the same lane rides away near the lane center, so the ego vehicle follows at a gentle pace. A pedestrian on the left beside the wall walks forward along the roadway edge, close to the travel path. A parked car protrudes from a right-side driveway, tightening clearance, and no notable traffic signals or posted speeds are visible.", "hazard_reasoning": "No caption provided. The conditions appear clear and no immediate hazards are present, so no warning is necessary."}
{"id": "train_00942", "split": "train", "clip_key": "2020-0204-150838_004593_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "004593"}, "frames": ["2020-0204-150838_004593_movie_t-3.jpg", "2020-0204-150838_004593_movie_t-2.jpg", "2020-0204-150838_004593_movie_t-1.jpg", "2020-0204-150838_004593_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with good pavement and only painted separation runs through a commercial district, and traffic is moderate to heavy with vehicles bunching ahead. A black van directly ahead in the ego lane slows because of congestion, constraining the ego car's pace. In the adjacent left lane, a black taxi also slows behind a white box truck, keeping close spacing and limiting any chance to pass on that side. To the right, oncoming cars and a scooter move steadily in their lanes, separated from the ego's direction by markings. An overhead blue directional sign displays arrows for left and straight movements.", "hazard_reasoning": "There is a black van slowing in front of the ego car in the ego lane, because of traffic congestion. Because the van ahead is decelerating in dense traffic, the driver must slow down to keep a safe following distance and prevent a rear-end collision."}
{"id": "train_00943", "split": "train", "clip_key": "titan_clip_612_000078_movie", "source": {"subset": "titan", "scenario": "clip_612", "frame": "000078"}, "frames": ["titan_clip_612_000078_movie_t-3.jpg", "titan_clip_612_000078_movie_t-2.jpg", "titan_clip_612_000078_movie_t-1.jpg", "titan_clip_612_000078_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single shared lane and block paving has no divider and very light traffic with no moving vehicles as the ego vehicle proceeds straight. On the left foreground, a man wearing a backpack and carrying an umbrella walks away from the ego car along the roadway edge, occupying the lane margin near its path. Farther ahead, a few pedestrians move along the middle of the street within the ego lane, limiting available space. Bicycles are parked against shops on both sides, and a sandwich board and other displays jut from the right, slightly narrowing the passage.", "hazard_reasoning": "There is a man wearing a backpack, carrying an umbrella, and walking on the left side of the road away from the ego car. The pedestrian is close to the vehicle's path and could change direction unpredictably, so the driver should reduce speed under this situation to maintain safety."}
{"id": "train_00944", "split": "train", "clip_key": "2020-0127-132751_104428_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "104428"}, "frames": ["2020-0127-132751_104428_movie_t-3.jpg", "2020-0127-132751_104428_movie_t-2.jpg", "2020-0127-132751_104428_movie_t-1.jpg", "2020-0127-132751_104428_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-lane two-way street with shopfronts and narrow sidewalks; pavement looks dry and intact, and traffic moves slowly. A silver van directly ahead in the left lane is stopped with brake lights lit, constraining the ego car. A short pedestrian carrying a handbag steps from the right edge into the lane ahead and walks left across in front of the ego vehicle, prompting the halt. An oncoming black car travels in the opposite lane to the right and continues past without interacting. Utility poles and storefront signs line the road, and a solid yellow center line divides directions.", "hazard_reasoning": "There is a short pedestrian carrying a handbag crossing to the left side of the road, in front of the ego car. You must stop to avoid a collision with the pedestrian who is entering your path."}
{"id": "train_00945", "split": "train", "clip_key": "titan_clip_531_000132_movie", "source": {"subset": "titan", "scenario": "clip_531", "frame": "000132"}, "frames": ["titan_clip_531_000132_movie_t-3.jpg", "titan_clip_531_000132_movie_t-2.jpg", "titan_clip_531_000132_movie_t-1.jpg", "titan_clip_531_000132_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of the pedestrian crossing", "environment_perception": "An urban residential street with a narrow two-way carriageway and no centerline lies ahead, the ego car approaching a zebra crossing at a small intersection on smooth pavement; traffic is very light with no moving vehicles. At the crosswalk directly ahead, a pedestrian carrying a bag crosses from right to left in front of the ego vehicle, occupying the lane. On the right curb, a person holding an umbrella steps onto the crosswalk to head left across the ego lane as well. Farther up the street, another pedestrian walks away near the left edge without interacting with the vehicle path. A no-entry sign stands at the mouth of the right-side street, and several cars are parked along the curbs.", "hazard_reasoning": "A pedestrian carrying a bag is crossing the street, at the crosswalk, to the right side. The driver should be aware of this pedestrian to avoid a potential collision."}
{"id": "train_00946", "split": "train", "clip_key": "titan_clip_597_000288_movie", "source": {"subset": "titan", "scenario": "clip_597", "frame": "000288"}, "frames": ["titan_clip_597_000288_movie_t-3.jpg", "titan_clip_597_000288_movie_t-2.jpg", "titan_clip_597_000288_movie_t-1.jpg", "titan_clip_597_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban shopping street with a single marked lane and no median has smooth pavement and very light motor traffic. A pedestrian in a black shirt carrying a handbag walks along the left edge away from the ego-vehicle, keeping outward because of a parked bicycle and edging near the travel lane. Two pedestrians ahead near the center of the lane walk toward the camera and effectively occupy the path, limiting forward space. On the right, another man by the storefront walks in the same direction close to the curb. Far ahead, a small car moves away in the lane. Numerous parked bicycles line both sides and constrict the usable width.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a handbag, and walking on the left side of the road, away from the ego-car, because of the parked bicycle. The pedestrian may unexpectedly step onto the road when passing the bicycle, so you should carefully manoeuvre around them."}
{"id": "train_00947", "split": "train", "clip_key": "titan_clip_1295_000594_movie", "source": {"subset": "titan", "scenario": "clip_1295", "frame": "000594"}, "frames": ["titan_clip_1295_000594_movie_t-3.jpg", "titan_clip_1295_000594_movie_t-2.jpg", "titan_clip_1295_000594_movie_t-1.jpg", "titan_clip_1295_000594_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban multi-lane arterial runs under elevated structures, with three same-direction lanes, smooth asphalt, and moderate traffic moving steadily. On the far left ahead, a delivery truck is stopped at the curb with its rear open and partly intruding into the left lane; a man in a blue shirt and brown pants stands beside it unloading the truck, with boxes set on the pavement, so that edge of the lane is constrained. In the adjacent right lane slightly ahead, a white SUV travels straight at a similar pace to the ego-vehicle. Farther ahead, a line of cars continues straight toward the underpass, setting the overall flow.", "hazard_reasoning": "There is a man wearing a blue shirt and brown pants and standing on the left side of the road, because he is unloading a truck. A pedestrian unloading a truck at the roadside may step into traffic unexpectedly, requiring the driver to adjust their path to avoid a collision."}
{"id": "train_00948", "split": "train", "clip_key": "2020-0225-145150_016866_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "016866"}, "frames": ["2020-0225-145150_016866_movie_t-3.jpg", "2020-0225-145150_016866_movie_t-2.jpg", "2020-0225-145150_016866_movie_t-1.jpg", "2020-0225-145150_016866_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction and a guardrail median runs straight on damp pavement, and traffic flows steadily. A gray van ahead in the ego lane continues straight at a steady pace, effectively setting the ego car's speed. Farther ahead, a small white car in the same lane pulls away, while a white car in the adjacent right lane proceeds straight without encroaching on the ego lane. To the right beyond the median, oncoming cars approach in their lanes and remain separated. No unusual hazards are visible.", "hazard_reasoning": "There is a gray van driving in front of the ego car in the ego lane, because of the green traffic light. Follow the vehicle ahead to maintain safe distance and prepare for a potential stop at the intersection."}
{"id": "train_00949", "split": "train", "clip_key": "2020-0129-105040_003311_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "003311"}, "frames": ["2020-0129-105040_003311_movie_t-3.jpg", "2020-0129-105040_003311_movie_t-2.jpg", "2020-0129-105040_003311_movie_t-1.jpg", "2020-0129-105040_003311_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction is separated by double center lines from oncoming lanes, the pavement looks smooth, and overall traffic is moderate. A white van is stopped directly ahead in the ego lane because of red traffic lights, forming the front of a short queue and constraining the ego car's pace. In the adjacent right lane ahead, a car proceeds slowly alongside the queue and continues straight. In the oncoming lanes to the right, a large box truck and a white van approach steadily, well separated by the center lines. Speed markings of 50 are painted on the road.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of red traffic lights. The driver should stop to avoid colliding with the halted vehicle at the red signal."}
{"id": "train_00950", "split": "train", "clip_key": "titan_clip_345_000372_movie", "source": {"subset": "titan", "scenario": "clip_345", "frame": "000372"}, "frames": ["titan_clip_345_000372_movie_t-3.jpg", "titan_clip_345_000372_movie_t-2.jpg", "titan_clip_345_000372_movie_t-1.jpg", "titan_clip_345_000372_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for pedestrian ahead", "environment_perception": "A narrow urban shopping street with block-paved surface has no lane markings or median, and buildings line both sides. Traffic is light with no moving vehicles, and the ego car proceeds slowly along the center of the shared roadway. On the left ahead, a man wearing a blue shirt and black pants with a shoulder bag walks away from the ego car along the curb. Slightly ahead in the center of the lane, another man in business attire walks away in the ego path, constraining the vehicle's speed. Farther ahead at the right edge, a woman stands by a storefront near the curb, waiting close to the path where she may step into the lane.", "hazard_reasoning": "There is a man wearing a blue shirt and black pants, carrying a shoulder bag, walking on the left side of the road away from the ego car. The pedestrian is close to the vehicle's path and may change direction unpredictably, so the driver should slow down to maintain safety."}
{"id": "train_00951", "split": "train", "clip_key": "titan_clip_953_000138_movie", "source": {"subset": "titan", "scenario": "clip_953", "frame": "000138"}, "frames": ["titan_clip_953_000138_movie_t-3.jpg", "titan_clip_953_000138_movie_t-2.jpg", "titan_clip_953_000138_movie_t-1.jpg", "titan_clip_953_000138_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban two-way street with one lane each way, no median, and smooth dry pavement is shown, with light traffic and a mostly clear oncoming lane. A dark sedan ahead in the ego lane moves away steadily, subtly constraining the ego vehicle's pace. Farther ahead on the left, a small green truck is parked partly within the ego lane, narrowing the available path. In the near left foreground, a black van is parked at the curb within the same lane, adding roadside obstruction. A speed-limit sign stands on a pole to the left, and bicycles are parked along the right sidewalk.", "hazard_reasoning": "There is a white truck parked in the ego lane. It blocks the normal driving path, so the driver should carefully manoeuvre around it to avoid a collision."}
{"id": "train_00952", "split": "train", "clip_key": "titan_clip_178_000018_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_178_000018_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_178_000018_movie_t-3_augB1.jpg", "titan_clip_178_000018_movie_t-2_augB1.jpg", "titan_clip_178_000018_movie_t-1_augB1.jpg", "titan_clip_178_000018_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down and watch for pedestrian", "environment_perception": "A narrow urban two-way street runs between mid-rise buildings, with smooth pavement, no median, and light traffic; the ego-vehicle proceeds in the left lane and no oncoming vehicles are close. Several vehicles are parked along the left curb ahead, narrowing the usable lane and partly blocking the pedestrian area. A pedestrian in a white shirt and black pants walks in the middle of the ego lane ahead, moving away from the ego car because the pedestrian lane is obstructed by a parked vehicle, and he may constrain the pace. Another person stands on the right sidewalk by a building entrance, stationary and not entering the road. A shared-lane bicycle marking is visible on the roadway.", "hazard_reasoning": "There's a pedestrian, wearing a white shirt and black pants, walking in the middle of the road in the ego lane, away from the ego car, because of the parked vehicle in the pedestrian lane. The pedestrian's path is obstructed by parked cars, forcing them into the driving lane, so the driver should slow down to avoid a collision."}
{"id": "train_00953", "split": "train", "clip_key": "titan_clip_578_000498_movie", "source": {"subset": "titan", "scenario": "clip_578", "frame": "000498"}, "frames": ["titan_clip_578_000498_movie_t-3.jpg", "titan_clip_578_000498_movie_t-2.jpg", "titan_clip_578_000498_movie_t-1.jpg", "titan_clip_578_000498_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "An urban narrow two-way street with no median and smooth pavement appears lightly trafficked, with no moving vehicles besides the ego, and a roadside work area constricts the lane. Cones line both sides, including a traffic cone on the right side of the road, leaving only a single clear path down the center. Ahead on the left, a utility truck with an elevated boom is stopped partly in the ego lane and remains stationary, constraining the ego vehicle's pace. A worker stands beside the truck at the lane edge within the coned area, close to the ego path. Farther ahead on the right, a bicycle is parked by the sidewalk and stays outside the lane.", "hazard_reasoning": "There is a traffic cone on the right side of the road. It marks a potential obstruction that requires careful manoeuvring to avoid collision."}
{"id": "train_00954", "split": "train", "clip_key": "2020-0226-101332_077019_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "077019"}, "frames": ["2020-0226-101332_077019_movie_t-3.jpg", "2020-0226-101332_077019_movie_t-2.jpg", "2020-0226-101332_077019_movie_t-1.jpg", "2020-0226-101332_077019_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs between mid-rise buildings, separated from oncoming traffic by a fenced median; the pavement is dry and smooth, and traffic moves in a slow, dense flow. A black sedan immediately ahead in the ego lane slows in a queue because of congestion ahead, setting the ego vehicle's pace. Slightly farther ahead to the right, a silver van in the adjacent lane also decelerates with the flow and tracks parallel to the ego path, limiting room to merge. On the left, a black taxi a little ahead holds its lane at low speed, keeping a short gap within the same queue.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a collision with the slowing vehicle."}
{"id": "train_00955", "split": "train", "clip_key": "2020-0205-103411_114696_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "114696"}, "frames": ["2020-0205-103411_114696_movie_t-3.jpg", "2020-0205-103411_114696_movie_t-2.jpg", "2020-0205-103411_114696_movie_t-1.jpg", "2020-0205-103411_114696_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with dry, smooth pavement carries light same-direction traffic, with two through lanes and a right-turn pocket; a wide painted median lies to the right, and no oncoming traffic is visible. A black sedan ahead to the left shifts right into the ego lane, easing its speed as lane arrows and an overhead sign indicate the left lane must turn left. A white van farther ahead continues straight in the ego lane at a steady pace, briefly controlling the headway after the merge. Sparse vehicles proceed in the distance. Overhead signage and ground arrows also show the rightmost lane is designated for right turns.", "hazard_reasoning": "There is a black sedan changing lanes from the left lane into the ego-car lane, because the traffic sign shows that traffic in the left lane must turn left. The sedan's unexpected merge into the ego lane creates a collision risk, so the driver should slow down to maintain a safe distance."}
{"id": "train_00956", "split": "train", "clip_key": "2020-0131-135401_018053_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "018053"}, "frames": ["2020-0131-135401_018053_movie_t-3.jpg", "2020-0131-135401_018053_movie_t-2.jpg", "2020-0131-135401_018053_movie_t-1.jpg", "2020-0131-135401_018053_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial passes between tall office buildings toward a signalized intersection; lanes are clearly marked, pavement is smooth, and traffic is light as vehicles slow near the junction. A black hatchback is stopped directly ahead in the ego lane at a red traffic light, holding the ego vehicle. A white sedan in the adjacent left lane slightly ahead also waits at the signal, remaining in its lane. A cyclist rides forward in the blue bike lane along the left curb toward the intersection, staying clear of the ego lane. The overhead traffic signal ahead shows red for this approach.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of the red traffic light ahead. Stop to avoid colliding with the halted vehicle at the red light."}
{"id": "train_00957", "split": "train", "clip_key": "2020-0131-135401_001288_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "001288"}, "frames": ["2020-0131-135401_001288_movie_t-3.jpg", "2020-0131-135401_001288_movie_t-2.jpg", "2020-0131-135401_001288_movie_t-1.jpg", "2020-0131-135401_001288_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road with a solid yellow centerline and curbside plantings is shown; the pavement appears dry and smooth, and overall traffic is light. A white box truck directly ahead in the ego lane starts to move off slowly, so the ego car follows at a reduced pace. On the left sidewalk, several pedestrians walk in the same direction near the curb, remaining separated from the roadway and not affecting the path. The right edge has a raised curb with shrubs that narrows the carriageway slightly but does not obstruct the lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00958", "split": "train", "clip_key": "titan_clip_996_000330_movie", "source": {"subset": "titan", "scenario": "clip_996", "frame": "000330"}, "frames": ["titan_clip_996_000330_movie_t-3.jpg", "titan_clip_996_000330_movie_t-2.jpg", "titan_clip_996_000330_movie_t-1.jpg", "titan_clip_996_000330_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop and yield to pedestrian", "environment_perception": "A narrow urban side street with block-paved surface leads to a small intersection and crosswalk; it functions as a single local lane with no centerline and traffic is very light. Ahead at the crosswalk, a woman in black trousers and a white blouse with long black hair, black-and-white shoes, and a handbag crosses from left to right across the ego path, constraining the ego vehicle's approach. No other moving vehicles are visible nearby. A red triangular stop sign and a pedestrian crossing sign are posted on the left at the intersection. Two bicycles are parked along the building on the right, and no additional obstacles appear.", "hazard_reasoning": "There is a woman wearing a pair of black trousers, a white blouse top, with long black hair, black and white shoes, carrying a handbag, crossing on the crosswalk. The driver must stop and yield to her to avoid collision."}
{"id": "train_00959", "split": "train", "clip_key": "2020-0206-101736_002813_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "002813"}, "frames": ["2020-0206-101736_002813_movie_t-3.jpg", "2020-0206-101736_002813_movie_t-2.jpg", "2020-0206-101736_002813_movie_t-1.jpg", "2020-0206-101736_002813_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban commercial street has one lane each way and no median; the pavement is smooth and traffic flows slowly. An orange taxi directly ahead in the ego lane moves at low speed, setting the pace. To the left near the curb, a black motorcycle advances and then merges right into the ego lane because a small white truck is parked ahead, momentarily entering our path. In the opposing lane on the right, a silver van approaches steadily without deviating. The parked mini-truck with a handcart and cargo occupies the curbside space, creating a local obstruction.", "hazard_reasoning": "There is a black motorcycle lane changing from the left lane to the ego lane, because of a parked vehicle. The driver should stop immediately to avoid a side collision as the motorcyclist enters the ego lane."}
{"id": "train_00960", "split": "train", "clip_key": "2020-0204-150838_084156_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "084156"}, "frames": ["2020-0204-150838_084156_movie_t-3.jpg", "2020-0204-150838_084156_movie_t-2.jpg", "2020-0204-150838_084156_movie_t-1.jpg", "2020-0204-150838_084156_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A suburban divided road with two same-direction lanes runs between a right-side guardrail and sound barrier and a left-side fence with trees; the asphalt looks dry and smooth, and traffic is heavy and slow. A black hatchback is stopped directly ahead in the ego lane because congestion ahead holds the line, constraining the ego car. In the left lane, a small gray van slightly ahead creeps along with the queue, limiting any chance to pass. Farther ahead, a white box truck and other lorries in both lanes inch forward, setting the pace. A metal guardrail lines a narrow right shoulder.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid collision with the halted vehicle and maintain a safe following distance."}
{"id": "train_00961", "split": "train", "clip_key": "2020-0217-144444_003489_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "003489"}, "frames": ["2020-0217-144444_003489_movie_t-3.jpg", "2020-0217-144444_003489_movie_t-2.jpg", "2020-0217-144444_003489_movie_t-1.jpg", "2020-0217-144444_003489_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with a left-side guardrail and good pavement appears, and traffic is heavy and slow with intermittent stopping. A yellow sedan directly ahead in the ego lane is stopped because congestion builds further up the road, holding the ego vehicle. In the adjacent right lane, a dark van slightly ahead creeps forward alongside, continuing with the slow queue. Farther ahead, a box truck and several cars are lined up in both same-direction lanes, constraining the flow and limiting gaps.", "hazard_reasoning": "There is a yellow sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop immediately to avoid colliding with the halted vehicle."}
{"id": "train_00962", "split": "train", "clip_key": "titan_clip_1074_000546_movie", "source": {"subset": "titan", "scenario": "clip_1074", "frame": "000546"}, "frames": ["titan_clip_1074_000546_movie_t-3.jpg", "titan_clip_1074_000546_movie_t-2.jpg", "titan_clip_1074_000546_movie_t-1.jpg", "titan_clip_1074_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of construction worker ahead", "environment_perception": "An urban two-lane road climbs gently toward a small underpass, divided by a solid orange centerline; the pavement looks smooth and dry, and traffic is light with no same-direction or oncoming vehicles visible. Ahead, a construction worker is standing in the right oncoming lane near the centerline, holding a baton and facing the roadway, his position close to the ego path. Along the right curb, a work flatbed truck loaded with pipes is parked, protruding slightly into the oncoming lane and narrowing the corridor. The approach to the underpass remains clear in the ego lane.", "hazard_reasoning": "A construction worker is standing in the right lane. The worker may move unpredictably or obstruct the path, so the driver should be cautious and adjust speed accordingly to avoid collision."}
{"id": "train_00963", "split": "train", "clip_key": "2020-0131-135401_087239_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "087239"}, "frames": ["2020-0131-135401_087239_movie_t-3.jpg", "2020-0131-135401_087239_movie_t-2.jpg", "2020-0131-135401_087239_movie_t-1.jpg", "2020-0131-135401_087239_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection, with clean pavement and a metal guardrail median; traffic is heavy and forms a stopped queue. A white van directly ahead in the ego lane is stopped because of traffic congestion ahead, holding the ego vehicle in place. To the left, a flatbed truck in the adjacent same-direction lane is also halted with the queue and may move when the lane clears. On the right beyond the guardrail, an oncoming white van proceeds toward the intersection at low speed within its lane and remains separated from the ego path. Overhead traffic signals and poles are visible at the junction.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle due to the congested traffic."}
{"id": "train_00964", "split": "train", "clip_key": "2020-0214-102601_025386_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "025386"}, "frames": ["2020-0214-102601_025386_movie_t-3.jpg", "2020-0214-102601_025386_movie_t-2.jpg", "2020-0214-102601_025386_movie_t-1.jpg", "2020-0214-102601_025386_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to merging sedan", "environment_perception": "A busy urban arterial with smooth pavement carries slow, dense traffic in three same-direction lanes, with a red curbside lane on the left and a low median separating opposing traffic. A green sedan ahead left moves right into the ego lane because the vehicle in front of it slows, tightening the gap and influencing the ego car's pace. A black SUV slightly ahead in the right-adjacent lane proceeds straight at a similar speed alongside, limiting a right merge. Farther ahead, a white coach bus in the center lanes decelerates with the queue, contributing to the congestion. Pedestrians walk behind guardrails on the left sidewalk.", "hazard_reasoning": "There is a green sedan lane changing from the left lane to the ego lane because the vehicle ahead is slowing down. Yielding is necessary because the merging sedan may enter your lane unexpectedly and could lead to a collision if you do not give way."}
{"id": "train_00965", "split": "train", "clip_key": "2020-0207-151349_068240_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "068240"}, "frames": ["2020-0207-151349_068240_movie_t-3.jpg", "2020-0207-151349_068240_movie_t-2.jpg", "2020-0207-151349_068240_movie_t-1.jpg", "2020-0207-151349_068240_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with a central metal barrier and smooth pavement runs between mid-rise buildings, and traffic is light. A black van ahead in the ego lane drives away at a steady pace, effectively setting the ego car's speed. A few oncoming cars travel along the opposite carriageway to the right, remaining separated by the barrier and not affecting the ego's path. Overhead blue direction signs indicate routes toward Omori, Magome, Sangenjaya, and Seijo, and a nearby circular sign shows bicycles prohibited beside the median. No other notable road users or obstacles are visible.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. The driver should be aware that this van may slow or brake unexpectedly, so maintaining a safe following distance is important under this situation."}
{"id": "train_00966", "split": "train", "clip_key": "2020-0213-143552_009674_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_009674_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_009674_movie_t-3_augB1.jpg", "2020-0213-143552_009674_movie_t-2_augB1.jpg", "2020-0213-143552_009674_movie_t-1_augB1.jpg", "2020-0213-143552_009674_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Manoeuvre around the cone carefully.", "environment_perception": "An urban two-way street with one lane per direction runs between mid-rise buildings; the pavement looks smooth and traffic is light to moderate. A dark hatchback ahead in the ego lane proceeds steadily, effectively setting the ego vehicle's pace. To the right, an oncoming silver sedan passes in its lane, maintaining course opposite to the ego vehicle. Farther right near the curb, a white truck in the opposing flow moves slowly with other vehicles. Several orange traffic cones, including one prominently in the right lane near the centerline, and a small sign narrow the oncoming lane and create a temporary obstruction.", "hazard_reasoning": "There is an orange traffic cone in the right lane. The driver should manoeuvre around the cone carefully to avoid collision and maintain a safe lane position."}
{"id": "train_00967", "split": "train", "clip_key": "titan_clip_420_000462_movie", "source": {"subset": "titan", "scenario": "clip_420", "frame": "000462"}, "frames": ["titan_clip_420_000462_movie_t-3.jpg", "titan_clip_420_000462_movie_t-2.jpg", "titan_clip_420_000462_movie_t-1.jpg", "titan_clip_420_000462_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrians", "environment_perception": "An urban residential scene shows a narrow two-way road without a center line or sidewalks; the asphalt is smooth with several manhole covers and strong shadows, and overall traffic is very light. Ahead on the right half of the roadway, four male pedestrians wearing white shirts and black pants walk together toward the ego vehicle while talking, occupying the middle of the road because there is no sidewalk and potentially encroaching on the ego's line. A small car is parked in a driveway to the left and bicycles are lined up by an apartment entrance, with no other moving road users or traffic signals visible.", "hazard_reasoning": "There are four male pedestrians, wearing white shirts and black pants, talking in a group, and walking towards the ego-car, in the middle of the road, because there is no sidewalk. The driver should manoeuvre carefully around the group to avoid collision with the pedestrians walking directly in the vehicle's path."}
{"id": "train_00968", "split": "train", "clip_key": "2020-0129-105040_026183_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "026183"}, "frames": ["2020-0129-105040_026183_movie_t-3.jpg", "2020-0129-105040_026183_movie_t-2.jpg", "2020-0129-105040_026183_movie_t-1.jpg", "2020-0129-105040_026183_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multilane arterial runs under elevated structures, with three same-direction lanes and a barrier separating oncoming traffic; the dry pavement looks clean and traffic is moderate but stopped at a signal. A yellow-and-orange sedan directly ahead in the ego lane is stopped at a red light, holding the queue. In the adjacent right lane, a white van waits slightly ahead, also halted for the light and pacing the ego vehicle. Along the left curb by the railing, two motorcyclists are stationary, remaining out of the ego lane. The overhead signal ahead shows red.", "hazard_reasoning": "There is a yellow-and-orange sedan stopped in the ego lane, because of the red traffic lights. You must stop to avoid colliding with the stationary vehicle and comply with the signal."}
{"id": "train_00969", "split": "train", "clip_key": "2020-0204-150838_005490_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "005490"}, "frames": ["2020-0204-150838_005490_movie_t-3.jpg", "2020-0204-150838_005490_movie_t-2.jpg", "2020-0204-150838_005490_movie_t-1.jpg", "2020-0204-150838_005490_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban signalized intersection on a two-way arterial with multiple lanes and smooth pavement approaches, with light traffic and no physical median. Ahead, a black sedan in the middle of the intersection changes lanes into the ego lane, narrowing the gap and setting our pace. On the right, a silver hatchback runs slightly ahead in the adjacent same-direction lane and continues straight without encroaching. In the opposite lanes, a white minivan proceeds through the intersection toward us, remaining oncoming and separated by the center line.", "hazard_reasoning": "There is a black sedan lane changing, in the middle of the intersection, to the ego lane. The sedan is cutting into your lane mid-intersection, so you should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_00970", "split": "train", "clip_key": "2020-0220-151845_034579_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "034579"}, "frames": ["2020-0220-151845_034579_movie_t-3.jpg", "2020-0220-151845_034579_movie_t-2.jpg", "2020-0220-151845_034579_movie_t-1.jpg", "2020-0220-151845_034579_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs under an elevated structure, with guardrails and smooth pavement; traffic is moderate and briefly slows. Ahead in the ego lane, a red truck carrying a covered load slows because congestion develops ahead and it constrains the ego car's pace. In the right lane slightly ahead, a silver hatchback travels slowly near the curb, reducing space for a lane change. On the near right, a dark sedan draws alongside in the outer lane and continues straight, overtaking the ego vehicle. An overhead blue guide sign indicates Hachioji and Ohara 2 km.", "hazard_reasoning": "There is a red truck slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to adapt to the reduced speed and maintain a safe following distance in the congested traffic."}
{"id": "train_00971", "split": "train", "clip_key": "2020-0205-103411_064126_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "064126"}, "frames": ["2020-0205-103411_064126_movie_t-3.jpg", "2020-0205-103411_064126_movie_t-2.jpg", "2020-0205-103411_064126_movie_t-1.jpg", "2020-0205-103411_064126_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with three same-direction lanes and a planted median on the right has smooth asphalt and heavy, stop-and-go flow at an intersection. A silver hatchback directly ahead in the ego lane is stopped for the red signal, holding the ego car. In the right lane near the median, a box truck farther ahead waits at the light and limits forward visibility and pace. In the left lane, a silver minivan slightly ahead also queues, reducing room to merge. Overhead traffic lights ahead display red.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver must stop to prevent rear-ending the halted vehicle."}
{"id": "train_00972", "split": "train", "clip_key": "2020-0129-105040_040501_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "040501"}, "frames": ["2020-0129-105040_040501_movie_t-3.jpg", "2020-0129-105040_040501_movie_t-2.jpg", "2020-0129-105040_040501_movie_t-1.jpg", "2020-0129-105040_040501_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs under an elevated expressway with smooth pavement and light, steady traffic. A white light truck ahead in the ego lane accelerates away as the road ahead remains open, increasing the gap. A larger dump truck travels farther ahead slightly to the right in the adjacent lane at a steady pace, parallel to the ego vehicle without encroaching. Farther ahead to the right, a yellow work truck continues under the viaduct in its lane and stays distant from the ego path. Overhead blue direction boards span the roadway, and no pedestrians, cyclists, or obstacles are visible.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because the road ahead is clear. The driver should follow the truck at a safe distance to ensure enough reaction time if it brakes suddenly."}
{"id": "train_00973", "split": "train", "clip_key": "titan_clip_817_000426_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_817_000426_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_817_000426_movie_t-3_augB1.jpg", "titan_clip_817_000426_movie_t-2_augB1.jpg", "titan_clip_817_000426_movie_t-1_augB1.jpg", "titan_clip_817_000426_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban neighborhood scene shows a narrow two-way road with no centerline or median; the pavement is smooth and dry, and traffic is light with no moving vehicles visible. Ahead on the left edge of the ego lane, a pedestrian wearing a cap stands in front of a green garbage bin and pauses near the travel path, potentially entering the ego lane. Parked vehicles line the right side, including a van set back in a building's carport, which visually narrows the corridor but stays outside the lane. No traffic signals or posted speeds are conspicuous.", "hazard_reasoning": "There is a male pedestrian wearing a cap, and standing in front of a green garbage bin, on the left side of the road, in the ego lane. The driver should be aware because the pedestrian occupies the driving lane and may step into the vehicle path unexpectedly."}
{"id": "train_00974", "split": "train", "clip_key": "2020-0227-104226_054574_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054574"}, "frames": ["2020-0227-104226_054574_movie_t-3.jpg", "2020-0227-104226_054574_movie_t-2.jpg", "2020-0227-104226_054574_movie_t-1.jpg", "2020-0227-104226_054574_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "An urban two-way street with one lane per direction and a painted centerline has smooth pavement and moderate, steady traffic. The ego vehicle proceeds in the left lane. A silver hatchback ahead in the same lane continues straight at low speed, effectively setting the ego car's pace. A black hatchback drives toward the ego car in the oncoming lane to the right and passes close to the centerline. Farther ahead, several oncoming cars travel straight in their lane, forming a continuous opposing stream. A pedestrian signal on the left shows a green walk indication.", "hazard_reasoning": "There is a black hatchback driving on the oncoming lane, toward the ego car. This vehicle is traveling in the wrong lane and heading directly toward the ego car, posing a collision risk, so the driver should yield to avoid an accident."}
{"id": "train_00975", "split": "train", "clip_key": "2020-0228-102841_051038_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "051038"}, "frames": ["2020-0228-102841_051038_movie_t-3.jpg", "2020-0228-102841_051038_movie_t-2.jpg", "2020-0228-102841_051038_movie_t-1.jpg", "2020-0228-102841_051038_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road without a physical median has dry asphalt and heavy stop-and-go traffic in bright sun. A white van directly ahead in the ego lane is stopped because congestion builds in front, holding the ego vehicle's pace. A large box truck waits level on the right in the adjacent same-direction lane, narrowing lateral clearance and partly blocking the view forward. Farther ahead-right, a small pickup with a covered load sits in its lane within the queue and remains stopped with brake lights on. Strong glare from the upper right reduces contrast across the scene.", "hazard_reasoning": "There is a white van stopped in front of the ego car because of traffic congestion ahead. The driver needs to stop promptly to avoid a collision with the stationary van given the slowed traffic."}
{"id": "train_00976", "split": "train", "clip_key": "2020-0204-103442_094452_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "094452"}, "frames": ["2020-0204-103442_094452_movie_t-3.jpg", "2020-0204-103442_094452_movie_t-2.jpg", "2020-0204-103442_094452_movie_t-1.jpg", "2020-0204-103442_094452_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-end collision", "environment_perception": "An urban multi-lane road without a median approaches an intersection; the pavement is intact and traffic is moderate, queuing at the light. A white van directly ahead in the ego lane is stopped because the overhead signal is red, holding the ego car. A yellow hatchback slightly ahead to the left is also stopped in the adjacent lane, forming a parallel queue. A bicyclist at the left curb by the storefronts waits near the roadway, close but outside the lane. Overhead traffic lights show red for the ego direction, and a narrow lane on the right tapers toward the main roadway ahead.", "hazard_reasoning": "There is a white van stopped in the ego lane because of a red traffic light, in front of the ego car. The driver needs to stop to avoid colliding with the stationary van at the intersection."}
{"id": "train_00977", "split": "train", "clip_key": "titan_clip_654_000120_movie", "source": {"subset": "titan", "scenario": "clip_654", "frame": "000120"}, "frames": ["titan_clip_654_000120_movie_t-3.jpg", "titan_clip_654_000120_movie_t-2.jpg", "titan_clip_654_000120_movie_t-1.jpg", "titan_clip_654_000120_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian on roadside", "environment_perception": "An urban shopping street runs as a narrow two-way road without a median, the pavement is smooth, and traffic is light but slow. Ahead in the ego lane, a silver van moves cautiously and sets the pace. On the right edge ahead, several pedestrians walk along the curb, with a couple edging toward the roadway and potentially entering the ego lane. On the left near the curb, a pedestrian wearing a gray shirt stands by the road and may step out. A white truck is stopped along the left side, narrowing the usable lane. No oncoming vehicles are visible in the scene.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and standing on the left side of the road. This pedestrian could enter the roadway unexpectedly, requiring the driver to remain vigilant and adjust speed as needed."}
{"id": "train_00978", "split": "train", "clip_key": "titan_clip_1272_000582_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1272_000582_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1272_000582_movie_t-3_augB1.jpg", "titan_clip_1272_000582_movie_t-2_augB1.jpg", "titan_clip_1272_000582_movie_t-1_augB1.jpg", "titan_clip_1272_000582_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow two-way urban backstreet without dividers or sidewalks runs straight between buildings; the worn pavement carries very light vehicle traffic while many pedestrians share the lane. Ahead in the ego lane, a pedestrian in a striped shirt and gray pants carrying a white grocery bag walks away from the vehicle along the roadway where no sidewalk exists, potentially constraining its pace. On the left near the camera, two men walk toward the ego vehicle along the edge of the lane and may drift into its path. Farther ahead near the center, a woman walks toward the camera within the lane, converging with the ego path. A car remains stationary at a garage entrance on the right.", "hazard_reasoning": "There is a pedestrian wearing a stripped shirt, gray pants, and carrying a white grocery bag, walking in front of the away from the ego car, because there is no sidewalk. The driver should carefully manoeuvre to avoid the pedestrian walking on the roadway."}
{"id": "train_00979", "split": "train", "clip_key": "2020-0210-155354_007758_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "007758"}, "frames": ["2020-0210-155354_007758_movie_t-3.jpg", "2020-0210-155354_007758_movie_t-2.jpg", "2020-0210-155354_007758_movie_t-1.jpg", "2020-0210-155354_007758_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the white van", "environment_perception": "An urban two-way street with one lane each direction has no median and smooth pavement, and traffic is heavy with slow movement in both directions. Several cars ahead in the ego lane queue and inch forward, constraining pace. A silver minivan in the oncoming lane to the right approaches and passes near the center line while maintaining its lane. Farther ahead at an intersection, a white van drives from the left side to the right side across the middle, momentarily shaping the flow seen ahead. Parked vehicles line the left curb, narrowing the usable lane near the camera.", "hazard_reasoning": "There is a white van driving from the left side to the right side in the middle of the intersection up ahead. Because the van is crossing the intersection ahead, it may enter your path unexpectedly, so you should be aware to anticipate its movement."}
{"id": "train_00980", "split": "train", "clip_key": "titan_clip_657_000138_movie", "source": {"subset": "titan", "scenario": "clip_657", "frame": "000138"}, "frames": ["titan_clip_657_000138_movie_t-3.jpg", "titan_clip_657_000138_movie_t-2.jpg", "titan_clip_657_000138_movie_t-1.jpg", "titan_clip_657_000138_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian crossing ahead", "environment_perception": "A narrow urban side street with no centerline runs between buildings; the pavement is dry and smooth and traffic is light. A large silver box truck is ahead at the right edge of the lane with its brake light on, partially blocking the path and slowing the ego-vehicle. A pedestrian wearing black pants crosses ahead from the right sidewalk to the left, in front of the ego-vehicle and passing by the front of the truck. Farther ahead, another pedestrian walks away along the left side of the roadway without entering the lane. Two orange cones sit on the left sidewalk near a doorway.", "hazard_reasoning": "There is a pedestrian wearing black pants and crossing the street, on the right side to the left side, in front of the ego-car. The driver should yield because the pedestrian is directly entering the vehicle's path, requiring a speed reduction to avoid a collision."}
{"id": "train_00981", "split": "train", "clip_key": "titan_clip_1301_000354_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1301_000354_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1301_000354_movie_t-3_augB1.jpg", "titan_clip_1301_000354_movie_t-2_augB1.jpg", "titan_clip_1301_000354_movie_t-1_augB1.jpg", "titan_clip_1301_000354_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A busy urban commercial street with a single narrow lane paved in stone is lined with shops, trees, and bollards; there is no center divider and vehicle traffic is very light and slow. A white delivery truck is parked along the left edge ahead, occupying part of the lane and restricting the ego vehicle's passage. A pedestrian wearing a cap, blue shirt, and black pants loads the truck at its rear to the left front of the ego car, standing partly in the lane because the vehicle is stopped there and thus constraining the path. Crowds on the right sidewalk walk and gather near the curb by the bollards, but they remain off the roadway.", "hazard_reasoning": "A pedestrian wearing a cap, wearing black pants, wearing a blue shirt, loading a truck, in front of the ego car, to the left side, because of the parked vehicle. The driver should slow down to avoid colliding with the pedestrian who may step into the lane unexpectedly due to limited visibility from the parked truck."}
{"id": "train_00982", "split": "train", "clip_key": "2020-0131-135401_020795_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "020795"}, "frames": ["2020-0131-135401_020795_movie_t-3.jpg", "2020-0131-135401_020795_movie_t-2.jpg", "2020-0131-135401_020795_movie_t-1.jpg", "2020-0131-135401_020795_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the stopped SUV at the red light.", "environment_perception": "An urban two-lane arterial with smooth pavement and a right-side guardrail runs between midrise buildings, and traffic is light to moderate but queued at an intersection. Ahead in the ego lane, a black SUV is stopped for the red traffic lights, holding the lane. In the adjacent left lane, a dark sedan near the ego car creeps forward in parallel as it approaches the same stop. Overhead signals ahead display red, and several vehicles line up farther ahead toward the junction.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, because of the red traffic lights. The driver must stop to avoid a collision with the halted vehicle at the red signal."}
{"id": "train_00983", "split": "train", "clip_key": "2020-0131-135401_028261_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "028261"}, "frames": ["2020-0131-135401_028261_movie_t-3.jpg", "2020-0131-135401_028261_movie_t-2.jpg", "2020-0131-135401_028261_movie_t-1.jpg", "2020-0131-135401_028261_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the merging SUV.", "environment_perception": "An urban two-way arterial with two lanes in our direction and two opposing, divided by a chevron-painted median, runs between tall apartment blocks; the pavement is smooth and traffic is moderate and steady. Ahead in the ego lane, a white SUV changes lanes to the left into the curbside lane, leaving our path. Farther ahead in that left lane, a dark car proceeds at a slightly slower pace, influencing the merge. Across the median to the right, an oncoming white box truck is stopped at the curb while another small truck passes in its lane. Parked vehicles line parts of both curbs, reducing lateral clearance near the left lane.", "hazard_reasoning": "There is a white SUV changing lanes from the ego lane to the left lane. The driver should be aware that this merging maneuver may require braking or steering adjustment to maintain a safe following distance."}
{"id": "train_00984", "split": "train", "clip_key": "titan_clip_1366_000276_movie", "source": {"subset": "titan", "scenario": "clip_1366", "frame": "000276"}, "frames": ["titan_clip_1366_000276_movie_t-3.jpg", "titan_clip_1366_000276_movie_t-2.jpg", "titan_clip_1366_000276_movie_t-1.jpg", "titan_clip_1366_000276_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "A quiet urban residential two-way street with narrow single lanes and no median is shown, the pavement slightly worn and traffic very light with no oncoming vehicles. Ahead in the ego lane along the left curb, a dark van is parked and encroaches on the lane, constraining the path. Farther ahead on the right side, a light-colored car is parked on the shoulder and remains outside the travel line. Bicycles and planters sit along the right sidewalk, and a zebra crossing passes under the camera with no salient signals visible.", "hazard_reasoning": "There's a black van parked on the right side of the road, in the ego-lane, because it's being unloaded. The van partially obstructs the lane and creates a blind spot, so the driver should carefully manoeuvre around it."}
{"id": "train_00985", "split": "train", "clip_key": "2020-0127-132751_016697_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "016697"}, "frames": ["2020-0127-132751_016697_movie_t-3.jpg", "2020-0127-132751_016697_movie_t-2.jpg", "2020-0127-132751_016697_movie_t-1.jpg", "2020-0127-132751_016697_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial runs under an elevated roadway with three same-direction lanes and a planted median on the left; the pavement looks smooth and traffic forms a heavy queue. A white hatchback directly ahead in the ego lane stands still because the signal ahead is red. In the adjacent right lane, a white van slightly ahead also waits, limiting a lane change. Farther ahead in the left lane, a small box truck queues near the intersection. Overhead signals show red, and lane-use signs indicate the left lane turns left while the two right lanes go straight.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The ego-vehicle must stop promptly to avoid colliding with the stopped vehicle and comply with the traffic signal."}
{"id": "train_00986", "split": "train", "clip_key": "2020-0203-114632_060702_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "060702"}, "frames": ["2020-0203-114632_060702_movie_t-3.jpg", "2020-0203-114632_060702_movie_t-2.jpg", "2020-0203-114632_060702_movie_t-1.jpg", "2020-0203-114632_060702_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows the ego-vehicle on a single-lane left-hand road that curves gently left, with smooth dark pavement and clear markings. A low concrete barrier and guardrail divide it from an oncoming red-surfaced lane on the right, and traffic is light. A black car approaches in the oncoming lane to the right and passes by, fully separated from the ego path. A pedestrian walks along the left sidewalk behind a fence, remaining well off the roadway. In the distance near the junction, a few vehicles move across the cross street. Overhead blue direction signs span the road ahead.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_00987", "split": "train", "clip_key": "2020-0226-101332_070210_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "070210"}, "frames": ["2020-0226-101332_070210_movie_t-3.jpg", "2020-0226-101332_070210_movie_t-2.jpg", "2020-0226-101332_070210_movie_t-1.jpg", "2020-0226-101332_070210_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three through lanes and a guardrail median approaches an intersection beneath an elevated roadway; the pavement is smooth and traffic is moderate, forming queues. Ahead in the ego lane, a gray van is stopped at a red traffic light, holding the lane. In the lane to the right, a silver minivan slightly ahead rolls slowly in parallel toward the stop line. Farther ahead, several cars and vans in the adjacent lanes brake and line up under the same signal, keeping short gaps. Overhead signals show red for this approach.", "hazard_reasoning": "There is a gray van stopped because of the red traffic light, in the ego lane. The driver must stop to avoid colliding with the stationary van and to obey the red traffic signal."}
{"id": "train_00988", "split": "train", "clip_key": "2020-0218-103119_056689_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "056689"}, "frames": ["2020-0218-103119_056689_movie_t-3.jpg", "2020-0218-103119_056689_movie_t-2.jpg", "2020-0218-103119_056689_movie_t-1.jpg", "2020-0218-103119_056689_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene on a two-lane one-way road under an elevated expressway shows smooth pavement and slow traffic that gradually begins to move. A white box truck directly ahead in the left ego lane pulls forward as the queue eases, setting the ego car's pace. In the adjacent right lane slightly ahead, another box truck moves ahead in its lane, occupying the space beside the ego vehicle and limiting an easy lane change. A black SUV at the front-right creeps alongside in the right lane, keeping close to the ego position and further constraining maneuvering room. No salient signals are visible.", "hazard_reasoning": "There is a white truck in forward motion in the ego lane, in front of the ego car, because traffic congestion ahead is easing. Following the truck helps adapt to the clearing congestion and maintain a safe following distance."}
{"id": "train_00989", "split": "train", "clip_key": "2020-0225-145150_004284_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "004284"}, "frames": ["2020-0225-145150_004284_movie_t-3.jpg", "2020-0225-145150_004284_movie_t-2.jpg", "2020-0225-145150_004284_movie_t-1.jpg", "2020-0225-145150_004284_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "be aware of slowing bus ahead", "environment_perception": "An urban two-way arterial approaches a signalized intersection with a marked right-turn bay; the asphalt is dry and smooth, and traffic is moderate. Far ahead in the ego lane, a green bus moves away and slows, setting the pace for our approach. Slightly ahead to the right, a silver car in the right-turn lane slows near the crosswalk and remains in the turn bay without entering the through lane. In the opposite direction to the right of center, several oncoming cars pass steadily through the junction. Parked cars line the right curb, and a scooter waits near the corner.", "hazard_reasoning": "There is a green bus slowing in the ego lane, away from the ego car. The bus's deceleration may require the driver to adjust speed to maintain a safe following distance."}
{"id": "train_00990", "split": "train", "clip_key": "titan_clip_1353_000108_movie", "source": {"subset": "titan", "scenario": "clip_1353", "frame": "000108"}, "frames": ["titan_clip_1353_000108_movie_t-3.jpg", "titan_clip_1353_000108_movie_t-2.jpg", "titan_clip_1353_000108_movie_t-1.jpg", "titan_clip_1353_000108_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped van", "environment_perception": "An urban two-way street with one lane per direction and a painted centerline runs between buildings and trees, with metal guardrails along both sides. The dry pavement appears smooth and traffic is light as the road curves gently right. Ahead in the ego lane near the left curb, a gray van is stopped for unloading and blocks the path, limiting forward progress. No oncoming vehicles or pedestrians are visible nearby.", "hazard_reasoning": "There is a gray van that has stopped in the ego lane, on the left side of the road, because it is being unloaded. The stopped van blocks the driving lane and may force a sudden lane change, so you should manoeuvre carefully around it."}
{"id": "train_00991", "split": "train", "clip_key": "titan_clip_12_000408_movie", "source": {"subset": "titan", "scenario": "clip_12", "frame": "000408"}, "frames": ["titan_clip_12_000408_movie_t-3.jpg", "titan_clip_12_000408_movie_t-2.jpg", "titan_clip_12_000408_movie_t-1.jpg", "titan_clip_12_000408_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban narrow one-lane street with a zebra crossing and smooth pavement shows light traffic as the vehicle approaches the crosswalk. Ahead, a pedestrian wearing a white shirt, black pants, and carrying a briefcase crosses from the left sidewalk to the right at the crosswalk, directly across the ego lane and constraining progress. Slightly beyond him, a woman in light blue jeans crosses the same crosswalk from right to left through the ego path, keeping the approach slow. On the near left, a worker in a blue vest pushes a large blue cart toward and onto the crosswalk, potentially entering the lane just ahead. A blue pedestrian crossing sign is posted on the right, and a black sedan is stopped at the right curb near the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a briefcase, crossing the street at the pedestrian crossing, from the left side of the street to the to the right side. Stop to yield to the crossing pedestrian and prevent a potential collision."}
{"id": "train_00992", "split": "train", "clip_key": "titan_clip_1322_000444_movie", "source": {"subset": "titan", "scenario": "clip_1322", "frame": "000444"}, "frames": ["titan_clip_1322_000444_movie_t-3.jpg", "titan_clip_1322_000444_movie_t-2.jpg", "titan_clip_1322_000444_movie_t-1.jpg", "titan_clip_1322_000444_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cyclist", "environment_perception": "A narrow urban side street with a single undivided lane and smooth pavement appears quiet, with no nearby motor traffic. A cyclist rides ahead in the ego lane, moving away from the ego car in the same direction and occupying the path, so the ego vehicle follows at the cyclist's pace. A woman walks along the right sidewalk slightly ahead, continuing forward parallel to traffic near a side junction while staying off the roadway. Convex safety mirrors and local signs are mounted on the right corner at the junction. Bollards and several parked bicycles line the left edge, narrowing the usable margin.", "hazard_reasoning": "The cyclist is riding in away from the ego car, in front of it. The cyclist's position directly ahead increases the risk of a collision if speed or steering are not adjusted to navigate around them safely."}
{"id": "train_00993", "split": "train", "clip_key": "titan_clip_499_000408_movie", "source": {"subset": "titan", "scenario": "clip_499", "frame": "000408"}, "frames": ["titan_clip_499_000408_movie_t-3.jpg", "titan_clip_499_000408_movie_t-2.jpg", "titan_clip_499_000408_movie_t-1.jpg", "titan_clip_499_000408_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the white van.", "environment_perception": "A narrow two-way urban street with cobblestone pavement runs between low- and mid-rise buildings; there is no centerline or median, and traffic is light with clear oncoming space. On the left curb ahead, a white van is parked, narrowing the ego lane as the car approaches. On the right edge close to the camera, a white cargo truck is stopped at the curb with a worker standing on its bed, occupying the shoulder but not extending into the lane. On the left sidewalk nearby, a man walks away along the storefronts.", "hazard_reasoning": "There is a white van parked on the left side of the road. This reduces the available lane width, so you should manoeuvre carefully around it to avoid collision."}
{"id": "train_00994", "split": "train", "clip_key": "titan_clip_911_000240_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_911_000240_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_911_000240_movie_t-3_augB1.jpg", "titan_clip_911_000240_movie_t-2_augB1.jpg", "titan_clip_911_000240_movie_t-1_augB1.jpg", "titan_clip_911_000240_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban commercial street has a single narrow lane with no divider, worn pavement, and very slow flow due to activity in the roadway. A woman on a bicycle crosses right to left directly across the ego lane in front of the vehicle. A white van ahead in the same direction is stopped or inching forward, partly blocking the lane and setting the pace. Several pedestrians on the right edge walk along the carriageway and drift toward the lane, potentially entering the path. Parked bicycles line both curbs, further tightening the available space.", "hazard_reasoning": "There is a lady, wearing a black t-shirt and black pants, cycling, from the right side to the left side of the road. The driver should slow down because the cyclist is crossing into the lane and may require additional space and reaction time."}
{"id": "train_00995", "split": "train", "clip_key": "titan_clip_1230_000084_movie", "source": {"subset": "titan", "scenario": "clip_1230", "frame": "000084"}, "frames": ["titan_clip_1230_000084_movie_t-3.jpg", "titan_clip_1230_000084_movie_t-2.jpg", "titan_clip_1230_000084_movie_t-1.jpg", "titan_clip_1230_000084_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped van", "environment_perception": "An urban commercial street with one lane in each direction and no median is shown, the pavement smooth and dry, and traffic is light as the ego vehicle proceeds in the left lane. Ahead along the left curb, a white van is stopped, occupying part of the travel lane and narrowing the passage. On the right near the foreground in the oncoming lane, a silver van is stopped at the curb and remains outside the ego path. Pedestrians move along both sidewalks, including a group near the left curb by the shops, but none enters the roadway.", "hazard_reasoning": "There is a white van stopped on the left side of the road. This stopped vehicle reduces available road width and requires the driver to alter their path to avoid a potential collision, so careful maneuvering is necessary."}
{"id": "train_00996", "split": "train", "clip_key": "titan_clip_652_000084_movie", "source": {"subset": "titan", "scenario": "clip_652", "frame": "000084"}, "frames": ["titan_clip_652_000084_movie_t-3.jpg", "titan_clip_652_000084_movie_t-2.jpg", "titan_clip_652_000084_movie_t-1.jpg", "titan_clip_652_000084_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban, narrow undivided two-way street climbs gently with smooth pavement and very light traffic, and no oncoming vehicles are visible. Ahead on the left edge of the carriageway, two pedestrians wearing a black dress and a black shirt walk away from the ego vehicle along the curb, occupying the roadside the car will pass. Farther ahead on the right, another pedestrian walks away along the bollard-lined sidewalk and remains off the lane. A red delivery scooter is parked at the right curb near the camera with its rear box close to the lane, slightly narrowing the margin. A single orange cone and a low barrier sit at a left driveway, but the travel lane stays unobstructed.", "hazard_reasoning": "There are two pedestrians wearing a black dress and a black shirt, walking on the left side of the road, away from the ego car. These pedestrians near the roadway could step into the vehicle's path unexpectedly, so the driver should slow down to maintain safety and be prepared for a sudden crossing."}
{"id": "train_00997", "split": "train", "clip_key": "2020-0228-150133_055131_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "055131"}, "frames": ["2020-0228-150133_055131_movie_t-3.jpg", "2020-0228-150133_055131_movie_t-2.jpg", "2020-0228-150133_055131_movie_t-1.jpg", "2020-0228-150133_055131_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement and a painted chevron area runs straight past low-rise buildings, and traffic is moderate with a buildup ahead. A black sedan directly ahead in the ego lane slows as a queue forms upstream, setting the pace for the ego vehicle. A white hatchback slightly ahead to the left travels steadily in the neighboring lane, limiting room to pass. In the right-side lanes, several white vans move forward near a taper, and one begins merging left toward the through lanes. An overhead blue guide sign provides route directions above the roadway.", "hazard_reasoning": "There is a black sedan in the ego-car lane that is slowing down, because there is traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a rear-end collision in the congested traffic."}
{"id": "train_00998", "split": "train", "clip_key": "2020-0220-151845_048054_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "048054"}, "frames": ["2020-0220-151845_048054_movie_t-3.jpg", "2020-0220-151845_048054_movie_t-2.jpg", "2020-0220-151845_048054_movie_t-1.jpg", "2020-0220-151845_048054_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with three same-direction lanes and dark asphalt showing patches; traffic is moderate and slow. Ahead in the ego lane, a pink truck carrying a yellow-tarped load slows, constraining the ego car's pace. To the right, a light blue kei car travels slightly ahead in the adjacent lane at a similar speed, occupying the space beside the ego vehicle. In the left lane ahead, a black sedan slows near a coned work area at the curb and holds near the lane boundary toward the center. Road work signs and cones are visible on the left, and blue overhead direction boards span the roadway.", "hazard_reasoning": "There is a pink truck slowing in front of the ego car, in the ego lane. You should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_00999", "split": "train", "clip_key": "2020-0131-103016_005831_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "005831"}, "frames": ["2020-0131-103016_005831_movie_t-3.jpg", "2020-0131-103016_005831_movie_t-2.jpg", "2020-0131-103016_005831_movie_t-1.jpg", "2020-0131-103016_005831_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane per direction and no median runs beside an elevated expressway; the asphalt looks smooth and traffic is light. A silver hatchback ahead in the ego lane slows beyond the crosswalk as flow compresses farther up the street, constraining the ego vehicle's pace. Two pedestrians wait on the left sidewalk at the corner by a shop near the crosswalk and could step into the ego lane. A small truck is stopped along the left curb ahead, narrowing the margin beside the travel lane. On the right, red delineator posts and a parked motorcycle sit on the shoulder outside the lane.", "hazard_reasoning": "There is a silver hatchback slowing in the ego lane, away from the ego car, because of traffic congestion ahead. The driver should slow down to match traffic flow and maintain a safe following distance to avoid a rear-end collision."}
{"id": "train_01000", "split": "train", "clip_key": "titan_clip_160_000336_movie", "source": {"subset": "titan", "scenario": "clip_160", "frame": "000336"}, "frames": ["titan_clip_160_000336_movie_t-3.jpg", "titan_clip_160_000336_movie_t-2.jpg", "titan_clip_160_000336_movie_t-1.jpg", "titan_clip_160_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial side street with a single narrow lane and no centerline appears, the pavement smooth and traffic light with mostly foot traffic. A pedestrian in a blue shirt carrying a briefcase is in the middle of the road ahead, crossing from left to right across the ego path and constraining the vehicle's pace. Farther ahead, several pedestrians cluster near the end of the block, some walking along the edge of the lane and potentially stepping into the path. No other moving vehicles are visible. Shop signs, bollards, and freestanding boards encroach slightly into the roadway, reducing clearance.", "hazard_reasoning": "There is a pedestrian in the middle of the road, wearing a blue shirt and carrying a briefcase, crossing to the right side. The driver should slow down to safely yield to the crossing pedestrian and avoid a collision."}
{"id": "train_01001", "split": "train", "clip_key": "2020-0228-150133_054160_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "054160"}, "frames": ["2020-0228-150133_054160_movie_t-3.jpg", "2020-0228-150133_054160_movie_t-2.jpg", "2020-0228-150133_054160_movie_t-1.jpg", "2020-0228-150133_054160_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the slowing vehicle ahead", "environment_perception": "An urban arterial with two same-direction lanes passes shops and mid-rise buildings; the pavement is smooth and a low hedge median divides oncoming lanes. Traffic is heavy and slow as vehicles queue toward a signalized intersection ahead. A black sedan directly ahead in the ego lane slows due to congestion, constraining the ego vehicle's pace. In the adjacent left lane, a small silver van and a black car slightly ahead creep forward in the queue, limiting room to merge. Beyond the hedge, oncoming traffic moves along the opposite lanes without interacting. Overhead traffic lights span the junction where vehicles are stacked beneath them.", "hazard_reasoning": "There's a black sedan in the ego lane, slowing down in the ego lane, due to traffic congestion ahead. The slowing black sedan indicates congestion that may require reduced speed and attentive driving to maintain safe following distance under these conditions."}
{"id": "train_01002", "split": "train", "clip_key": "titan_clip_97_000276_movie", "source": {"subset": "titan", "scenario": "clip_97", "frame": "000276"}, "frames": ["titan_clip_97_000276_movie_t-3.jpg", "titan_clip_97_000276_movie_t-2.jpg", "titan_clip_97_000276_movie_t-1.jpg", "titan_clip_97_000276_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shopping district on a narrow two-way street without a centerline has dry pavement and light traffic. The ego approaches a zebra crosswalk at a small intersection while several vehicles are parked along the right curb, narrowing the lane. Ahead to the right, a pedestrian steps onto the crosswalk and moves leftward across the ego path, constraining the pace. On the left sidewalk near the corner, a pedestrian wearing black pants, a white shirt, and a black tie talks on a cell phone and waits to cross. At the near left edge, a cyclist rides across the front of the vehicle along the crosswalk, moving rightward and potentially entering the lane. A yellow pedestrian warning sign is visible on the left, and the parked vans partially block sightlines.", "hazard_reasoning": "There is a male pedestrian on the ride side of the street, wearing black pants, a white shirt and a black tie, talking into a cell phone, and waiting to cross the street. The driver should carefully manoeuvre around the pedestrian as he may step into the road unexpectedly while distracted on his phone."}
{"id": "train_01003", "split": "train", "clip_key": "2020-0226-101332_007250_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "007250"}, "frames": ["2020-0226-101332_007250_movie_t-3.jpg", "2020-0226-101332_007250_movie_t-2.jpg", "2020-0226-101332_007250_movie_t-1.jpg", "2020-0226-101332_007250_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban two-way street with one lane per direction and a solid yellow centerline runs between dense buildings; the pavement is clean and traffic is light as the ego car is stopped. A blue van is stopped directly ahead in the ego lane, constraining the ego vehicle as the overhead traffic signal ahead shows red. In the opposite lane, a black sedan approaches the crosswalk from ahead and slows near the intersection, remaining in oncoming traffic. On the left, a cyclist rides forward along the roadside beside a guardrail, continuing past the stopped vehicles.", "hazard_reasoning": "There is a blue van stopped in the ego lane, in front of the ego car. The driver should stop to avoid a rear-end collision with the stationary vehicle ahead under these conditions."}
{"id": "train_01004", "split": "train", "clip_key": "2020-0129-105040_002850_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-105040_002850_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-105040_002850_movie_t-3_augB1.jpg", "2020-0129-105040_002850_movie_t-2_augB1.jpg", "2020-0129-105040_002850_movie_t-1_augB1.jpg", "2020-0129-105040_002850_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the construction worker", "environment_perception": "An urban arterial with a single lane in each direction is divided by a low curbed median; the pavement is smooth and traffic is light in the ego direction while oncoming flow is moderate. Far ahead in the ego lane, a white box truck proceeds steadily and is the next vehicle ahead. To the right beyond the median, a black taxi and other cars approach in the oncoming lane and continue past without affecting the ego path. On the left, a narrow side bay has a few stopped vehicles near shops but they remain outside the travel lane. No construction worker is visible standing in the left lane.", "hazard_reasoning": "A construction worker is standing in the left lane. The worker blocks the travel lane, increasing the risk of collision, so the driver should be aware to safely navigate around him."}
{"id": "train_01005", "split": "train", "clip_key": "2020-0227-153144_040402_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "040402"}, "frames": ["2020-0227-153144_040402_movie_t-3.jpg", "2020-0227-153144_040402_movie_t-2.jpg", "2020-0227-153144_040402_movie_t-1.jpg", "2020-0227-153144_040402_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with left-hand traffic approaches a signalized intersection; the pavement is dry and intact, and traffic is moderate and queued. A white van directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. A blue car in the adjacent lane to the left also waits near the stop line, stationary alongside the ego car. On the right at the crosswalk, a pedestrian walking a small dog proceeds across in front of the stopped approach. Overhead signals face the approach and remain red through the scene.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid a collision and obey the red signal."}
{"id": "train_01006", "split": "train", "clip_key": "titan_clip_117_000228_movie", "source": {"subset": "titan", "scenario": "clip_117", "frame": "000228"}, "frames": ["titan_clip_117_000228_movie_t-3.jpg", "titan_clip_117_000228_movie_t-2.jpg", "titan_clip_117_000228_movie_t-1.jpg", "titan_clip_117_000228_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked van.", "environment_perception": "A narrow two-way urban street lined with shops and offices has one lane in each direction and no median, with smooth pavement and light traffic. On the right side ahead, a gray van is parked at the curb with its rear door open, creating a roadside obstruction. Ahead near the left edge of the ego lane, a pedestrian walks away along the roadway close to the ego vehicle's path and may constrain pace. Farther ahead, several other pedestrians move along the sidewalks without entering the road.", "hazard_reasoning": "There is a gray van parked on the right side of the road. The parked van may obscure pedestrians or have occupants exiting, so the driver should remain alert to avoid potential conflicts."}
{"id": "train_01007", "split": "train", "clip_key": "2020-0214-102601_061033_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "061033"}, "frames": ["2020-0214-102601_061033_movie_t-3.jpg", "2020-0214-102601_061033_movie_t-2.jpg", "2020-0214-102601_061033_movie_t-1.jpg", "2020-0214-102601_061033_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the blue hatchback immediately.", "environment_perception": "An urban multilane arterial runs under an elevated structure, with three same-direction lanes, a left sound wall, and a right curb; the pavement is dry and traffic is slow and queuing. A hatchback directly ahead in the ego lane is stopped because the signal at the distant intersection shows red, and it blocks the ego car's path. To the ahead-left, a white minivan in the adjacent lane also slows in the queue, pacing the ego vehicle. Farther ahead, a box truck proceeds straight in the middle lane at low speed, adding to the congestion.", "hazard_reasoning": "There is a blue hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The stationary vehicle indicates a halted flow at a red light, requiring you to stop to avoid a collision and comply with traffic signals."}
{"id": "train_01008", "split": "train", "clip_key": "2020-0131-135401_090391_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "090391"}, "frames": ["2020-0131-135401_090391_movie_t-3.jpg", "2020-0131-135401_090391_movie_t-2.jpg", "2020-0131-135401_090391_movie_t-1.jpg", "2020-0131-135401_090391_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement approaches a signalized intersection, bordered by a raised curb and railing on the right and a painted gore for a merging lane; traffic is heavy and slow. A white van directly ahead in the ego lane is stopped because the queue backs up toward the intersection, holding the ego vehicle. To the left, a white boxy car in the adjacent lane creeps forward slightly ahead, edging past the queue. Farther ahead in the right-adjacent lane, a large bus slows within the line of vehicles, contributing to the buildup. Other cars in both adjacent lanes inch toward the junction.", "hazard_reasoning": "There is a white van that has stopped in the ego lane, because of the traffic congestion ahead, in front of the ego car. The driver should stop to avoid a collision with the halted vehicle ahead."}
{"id": "train_01009", "split": "train", "clip_key": "2020-0207-151349_077290_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "077290"}, "frames": ["2020-0207-151349_077290_movie_t-3.jpg", "2020-0207-151349_077290_movie_t-2.jpg", "2020-0207-151349_077290_movie_t-1.jpg", "2020-0207-151349_077290_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial runs under an elevated structure with two lanes in the ego direction, a right-side guardrail dividing another carriageway, smooth pavement, and heavy, slow traffic. A brown truck directly ahead in the ego lane slows because of congestion ahead, constraining the ego car's pace. Slightly ahead to the left, a white van in the adjacent lane creeps forward parallel to the truck, limiting space to change lanes. Farther ahead in that left lane, a larger box truck queues in the traffic stream with brake lights on. Pedestrians line the left sidewalk outside shops behind a low railing and continue walking without entering the roadway. Pillars and the guardrail create a narrow shoulder and reduced lateral clearance.", "hazard_reasoning": "There is a brown truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. Follow the vehicle ahead to maintain a safe distance and avoid sudden braking."}
{"id": "train_01010", "split": "train", "clip_key": "titan_clip_1059_000420_movie", "source": {"subset": "titan", "scenario": "clip_1059", "frame": "000420"}, "frames": ["titan_clip_1059_000420_movie_t-3.jpg", "titan_clip_1059_000420_movie_t-2.jpg", "titan_clip_1059_000420_movie_t-1.jpg", "titan_clip_1059_000420_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street lined with shops has no median and smooth pavement, and traffic remains light and slow. Ahead on the left edge, a cyclist in a yellow T-shirt and cap rides away from the ego vehicle close to the curb, likely to set the pace. Slightly ahead near the center-right of the lane, a pedestrian walks away in the roadway, partially occupying the path and constraining the ego vehicle's speed. Farther ahead in the same direction, a small van moves slowly near the left curb, reducing the available space through the corridor.", "hazard_reasoning": "A cyclist wearing a yellow T-shirt and a cap and cycling on the left side of the road, away from the ego car. Slow down to maintain a safe distance from the cyclist sharing the narrowed lane near the parked truck."}
{"id": "train_01011", "split": "train", "clip_key": "2020-0225-102455_071624_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "071624"}, "frames": ["2020-0225-102455_071624_movie_t-3.jpg", "2020-0225-102455_071624_movie_t-2.jpg", "2020-0225-102455_071624_movie_t-1.jpg", "2020-0225-102455_071624_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes and no median runs through a dense cityscape; the pavement is smooth and traffic is heavy, compressing into a slow queue ahead. A white van directly in front in the ego lane slows because of congestion ahead, holding the ego car's pace. In the right lane slightly ahead, a gray hatchback inches forward alongside, limiting space for a merge. Farther ahead-right, a black taxi creeps with the line of cars, keeping the adjacent lane blocked. A blue overhead sign shows all three lanes continue straight. Several delivery vans stop along the left curb with doors open, narrowing the leftmost lane.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down because the van's reduced speed indicates congestion requiring safe deceleration to maintain distance."}
{"id": "train_01012", "split": "train", "clip_key": "2020-0227-104226_053673_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "053673"}, "frames": ["2020-0227-104226_053673_movie_t-3.jpg", "2020-0227-104226_053673_movie_t-2.jpg", "2020-0227-104226_053673_movie_t-1.jpg", "2020-0227-104226_053673_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-way road with one lane per direction and an orange center line shows smooth pavement and moderate traffic approaching a signalized intersection. A silver hatchback directly ahead in the ego lane is stopped at the stop line because the traffic light is red, holding the ego vehicle in place. An oncoming white van in the opposite lane proceeds straight through the intersection toward the camera, clearing the junction while the ego lane waits. Farther back in that lane, a white box truck approaches the crosswalk behind the van. Parked cars line the left curb beside the ego car, slightly narrowing the lane.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid rear-ending the halted vehicle as traffic remains stopped at the red light."}
{"id": "train_01013", "split": "train", "clip_key": "2020-0213-143552_005520_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "005520"}, "frames": ["2020-0213-143552_005520_movie_t-3.jpg", "2020-0213-143552_005520_movie_t-2.jpg", "2020-0213-143552_005520_movie_t-1.jpg", "2020-0213-143552_005520_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban multi-lane two-way road with no physical median is viewed from a front-facing car; the pavement looks clean and traffic appears moderate with steady movement in both directions. A black truck is parked ahead in the ego lane along the left curb, standing still and obstructing part of the lane. A motorcyclist ahead in the same direction shifts right and accelerates past the parked truck, moving into the space the ego vehicle would use to go around it. Oncoming traffic in the right-side lanes, including a silver van close to the camera, moves past continuously and could limit gaps for passing the obstruction.", "hazard_reasoning": "There is a black truck parked in front of the ego car, in the ego lane. The parked truck blocks the lane ahead, requiring a careful maneuver to avoid collision and maintain safe traffic flow."}
{"id": "train_01014", "split": "train", "clip_key": "titan_clip_1227_000342_movie", "source": {"subset": "titan", "scenario": "clip_1227", "frame": "000342"}, "frames": ["titan_clip_1227_000342_movie_t-3.jpg", "titan_clip_1227_000342_movie_t-2.jpg", "titan_clip_1227_000342_movie_t-1.jpg", "titan_clip_1227_000342_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban back street with a single lane and no median runs between shops; the worn pavement and light flow are constrained by parked vehicles on the right and cones marking a roadside area. Ahead in the same lane, a white box truck stands near the curb, blocking much of the lane and setting the pace. On the left side of the road, a pedestrian wearing khaki pants and a blue shirt carries a bag and walks away from the car along the edge, close enough to possibly enter the lane. Farther left near the curb, two other pedestrians approach the camera and linger at the roadway edge, further constraining space. A large black van is parked tight to the lane on the right, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing khaki pants and a blue shirt, carrying a bag, and walking on the left side of the road away from the ego car. The driver should manoeuvre carefully around the pedestrian to avoid collision as they may unexpectedly cross or step off the curb."}
{"id": "train_01015", "split": "train", "clip_key": "titan_clip_1033_000138_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1033_000138_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1033_000138_movie_t-3_augB1.jpg", "titan_clip_1033_000138_movie_t-2_augB1.jpg", "titan_clip_1033_000138_movie_t-1_augB1.jpg", "titan_clip_1033_000138_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow two-way urban residential street with a painted centerline and damp, patched pavement runs through a roadside work zone, and traffic is light as the ego-vehicle proceeds along the left side. Directly ahead in the ego lane, a pedestrian in a work uniform and hard hat stands in the middle using a sprayer due to construction on the right, temporarily blocking the lane. Slightly farther ahead, another worker stands and walks near a small work truck in the center area, constraining the ego-vehicle's pace. On the right edge, a stopped work truck, orange cones, and hoses and tools encroach into the lane and narrow the passage, while no oncoming vehicles appear in view.", "hazard_reasoning": "There is a pedestrian wearing a work uniform and a hard hat, using a sprayer, and standing in the middle of the road, because of construction work on the right. Drivers should carefully manoeuvre around the worker in the roadway to avoid collision due to their unexpected presence on the road."}
{"id": "train_01016", "split": "train", "clip_key": "titan_clip_916_000156_movie", "source": {"subset": "titan", "scenario": "clip_916", "frame": "000156"}, "frames": ["titan_clip_916_000156_movie_t-3.jpg", "titan_clip_916_000156_movie_t-2.jpg", "titan_clip_916_000156_movie_t-1.jpg", "titan_clip_916_000156_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the crossing pedestrian.", "environment_perception": "In an urban shopping district, the ego vehicle approaches a narrow undivided street paved with bricks; the surface is good and there is no visible motor traffic. A pedestrian in a white T-shirt with a backpack crosses from the right to the left directly in front of the ego car, occupying the lane and dictating a brief slowdown. Farther ahead in the center of the lane, a small group of pedestrians walks away from the ego vehicle at a leisurely pace, remaining in its path and likely to constrain progress. On the left edge near storefronts, another pedestrian steps toward the roadway and may enter the ego lane as the car nears.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and carrying a backpack, crossing the street in front of the ego car, from the right side to the left. The driver should be aware of the crossing pedestrian as they may enter the vehicle's path unexpectedly."}
{"id": "train_01017", "split": "train", "clip_key": "2020-0217-110854_070671_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "070671"}, "frames": ["2020-0217-110854_070671_movie_t-3.jpg", "2020-0217-110854_070671_movie_t-2.jpg", "2020-0217-110854_070671_movie_t-1.jpg", "2020-0217-110854_070671_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with buildings and trees lines the scene; the ego car travels in the left lane on dry pavement, separated from opposing traffic by a wide painted buffer, and traffic is moderate. A white mini-truck in the ego lane ahead proceeds steadily and sets the pace for the ego vehicle. To the right, a silver van approaches in the nearest oncoming lane and continues past in its lane. Farther ahead on the oncoming side, another small truck advances toward the camera, remaining separated by the markings. A pedestrian footbridge spans the roadway above, and no traffic signals or unusual hazards are clearly visible.", "hazard_reasoning": "There is a white mini-truck moving in the ego lane in front of the ego car, because of the green traffic light. The driver should follow the vehicle ahead to maintain safe distance and anticipate any sudden speed changes."}
{"id": "train_01018", "split": "train", "clip_key": "2020-0226-140503_026222_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "026222"}, "frames": ["2020-0226-140503_026222_movie_t-3.jpg", "2020-0226-140503_026222_movie_t-2.jpg", "2020-0226-140503_026222_movie_t-1.jpg", "2020-0226-140503_026222_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the pedestrian at crosswalk", "environment_perception": "An urban intersection on a two-way single-lane road with no median and smooth pavement comes into view, and traffic is light to moderate as vehicles negotiate the junction. A black minivan ahead occupies the middle of the intersection and turns across the ego vehicle's path, momentarily blocking the way. An oncoming white van beyond the junction proceeds straight through in its lane and clears the crossing. On the left sidewalk at the crosswalk ahead, a pedestrian wearing a white dress and holding a handbag waits to cross and may enter the ego lane when the way opens. An overhead traffic signal displays yellow above the intersection.", "hazard_reasoning": "There is a pedestrian wearing a white dress, holding a handbag, and waiting to cross, on the left sidewalk, ahead at the crosswalk. The driver should yield because the pedestrian may step into the roadway from the crosswalk."}
{"id": "train_01019", "split": "train", "clip_key": "titan_clip_483_000522_movie", "source": {"subset": "titan", "scenario": "clip_483", "frame": "000522"}, "frames": ["titan_clip_483_000522_movie_t-3.jpg", "titan_clip_483_000522_movie_t-2.jpg", "titan_clip_483_000522_movie_t-1.jpg", "titan_clip_483_000522_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way carriageway and no median has smooth pavement and light traffic, with a mostly clear ego lane slightly constrained by roadside activity. On the left edge ahead, a pedestrian with a backpack walks toward the vehicle in the roadway because the sidewalk is congested, encroaching on the vehicle's path. At the right curb near midrange, a silver van is stopped in a recessed bay, reducing lateral clearance beside the ego lane. Farther ahead in the opposite lane, a small car approaches steadily while remaining in its lane. A roadside sign on the right shows a speed limit of 40.", "hazard_reasoning": "There is a pedestrian carrying a backpack, walking toward the ego car, because the side walk is occupied, on the left side of the road. The pedestrian may step into the road unexpectedly, so the driver should slow down to avoid a collision."}
{"id": "train_01020", "split": "train", "clip_key": "2020-0127-132751_047528_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "047528"}, "frames": ["2020-0127-132751_047528_movie_t-3.jpg", "2020-0127-132751_047528_movie_t-2.jpg", "2020-0127-132751_047528_movie_t-1.jpg", "2020-0127-132751_047528_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of the cone ahead", "environment_perception": "An urban elevated two-way road with one lane per direction runs between tall noise barriers; the reddish pavement looks smooth and dry, and traffic moves steadily. A white car ahead in the ego lane cruises at a constant speed, loosely setting the pace. On the right, separated by a narrow median of flexible posts, an oncoming red car passes nearest, with a white van following in the same opposing lane. A series of orange-and-white posts lines the divider, and an orange and white traffic cone stands on the right side of our lane near the posts, marking the edge.", "hazard_reasoning": "There is an orange and white traffic cone on the right side of the lane. Drivers should be aware of its presence to maintain safe lane positioning."}
{"id": "train_01021", "split": "train", "clip_key": "2020-0131-135401_025173_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "025173"}, "frames": ["2020-0131-135401_025173_movie_t-3.jpg", "2020-0131-135401_025173_movie_t-2.jpg", "2020-0131-135401_025173_movie_t-1.jpg", "2020-0131-135401_025173_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road approaches a signalized intersection beneath a pedestrian overpass; the pavement is dry and traffic is light to moderate with a short queue in the left-side ego lane. A silver car directly ahead in the ego lane is stopped, holding the ego vehicle at a standstill at the red light. In the adjacent right lane, a white van moves through the junction, passing the queue and veering slightly right. The signal facing the ego lane shows red, and cones and barriers line the left curb and the near corner, narrowing the shoulder without encroaching on the lane.", "hazard_reasoning": "There is a silver Sedan stopped in front of the ego car in the ego lane, due to traffic congestion. The driver needs to stop to avoid colliding with the stationary vehicle ahead in the traffic queue."}
{"id": "train_01022", "split": "train", "clip_key": "2020-0205-152530_040034_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "040034"}, "frames": ["2020-0205-152530_040034_movie_t-3.jpg", "2020-0205-152530_040034_movie_t-2.jpg", "2020-0205-152530_040034_movie_t-1.jpg", "2020-0205-152530_040034_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of the merging vehicle", "environment_perception": "A wide urban arterial with several lanes in each direction has only painted separation, smooth dry pavement, and moderate flow. Ahead slightly right, a black hatchback shifts from the ego lane into the right lane. A light van directly ahead in the ego lane continues steadily with the flow, constraining the ego car's speed. To the right, a queue of cars runs alongside, limiting immediate merging space. Oncoming traffic occupies the far-right side of the carriageway. Parked taxis line the left curb but remain outside the travel lane.", "hazard_reasoning": "There is a black hatchback changing from the ego lane to the right lane. The vehicle may merge into your path unexpectedly, so you should be aware of its movement."}
{"id": "train_01023", "split": "train", "clip_key": "2020-0210-142719_003950_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "003950"}, "frames": ["2020-0210-142719_003950_movie_t-3.jpg", "2020-0210-142719_003950_movie_t-2.jpg", "2020-0210-142719_003950_movie_t-1.jpg", "2020-0210-142719_003950_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with two lanes in the ego direction and no median has smooth pavement and slow, moderate traffic. A black minivan directly ahead in the ego lane is stopped, waiting for pedestrians to cross and preparing to change into the left lane. Two pedestrians cross from right to left in front of it at walking pace, briefly occupying the space the minivan intends to merge into. Farther ahead in the right lane, a white box truck moves slowly in the same direction, adding to the queue. Sidewalks are busy near a bus stop on the right, but the roadway remains clear of obstacles.", "hazard_reasoning": "There is a black minivan waiting for pedestrians to cross before changing to the left lane from the ego lane, in front of the ego car. The minivan's upcoming lane change poses a risk of sudden lateral movement, so the driver should reduce speed and maintain a safe following distance."}
{"id": "train_01024", "split": "train", "clip_key": "2020-0203-114632_009755_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "009755"}, "frames": ["2020-0203-114632_009755_movie_t-3.jpg", "2020-0203-114632_009755_movie_t-2.jpg", "2020-0203-114632_009755_movie_t-1.jpg", "2020-0203-114632_009755_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane in each direction runs past apartments and tall trees; the asphalt is dry with raised center markers, and traffic is light throughout. Far ahead in the same direction, a small white truck proceeds straight in the ego lane at a steady pace. In the opposite direction to the right, several cars and vans travel past in their lanes without changing course. A roadside circular sign on the left displays 30. Parked vehicles line both curbs, including a silver car stopped ahead along the left shoulder that narrows the usable lane.", "hazard_reasoning": "There are no hazards detected as the road is clear and traffic is light. Consequently, the driver can continue driving normally."}
{"id": "train_01025", "split": "train", "clip_key": "2020-0131-135401_016174_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "016174"}, "frames": ["2020-0131-135401_016174_movie_t-3.jpg", "2020-0131-135401_016174_movie_t-2.jpg", "2020-0131-135401_016174_movie_t-1.jpg", "2020-0131-135401_016174_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane intersection on smooth asphalt has painted chevron channelization, and traffic is moderate and flowing under a green signal. A black van ahead in the ego lane drives away from the ego car and proceeds through the junction, setting the pace. From the right side of the intersection, a silver sedan moves leftward across in front of us to the far side, clearing the path as we approach. On the near right, a white car waits at the stop line of a side street, angled to turn left into the same direction and potentially merge after we pass. On the left sidewalk, several pedestrians stand near the corner by the crosswalk without entering the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01026", "split": "train", "clip_key": "titan_clip_336_000870_movie", "source": {"subset": "titan", "scenario": "clip_336", "frame": "000870"}, "frames": ["titan_clip_336_000870_movie_t-3.jpg", "titan_clip_336_000870_movie_t-2.jpg", "titan_clip_336_000870_movie_t-1.jpg", "titan_clip_336_000870_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping alley serves as a very narrow shared street with brick paving, no lane markings or median, and negligible vehicle flow as the ego car moves slowly among pedestrians. On the left edge, a pedestrian in a white T-shirt carrying a handbag walks toward the ego vehicle because there is no sidewalk on that side, and she may step into the travel line. Straight ahead in the center of the lane, a person in dark clothing walks away from the camera, occupying the path and effectively controlling the vehicle's pace. On the right, another pedestrian approaches while hugging the storefronts, remaining close to the curb but within the roadway. An A-frame menu board, vending machines, and a parked bicycle encroach on the edges as minor obstacles.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, carrying a handbag, walking on the left side of the road, towards the ego car, because there is no sidewalk on the left. The pedestrian is walking towards the vehicle on the roadway due to lack of sidewalk, posing a collision risk; the driver should slow down to avoid hitting them."}
{"id": "train_01027", "split": "train", "clip_key": "titan_clip_900_000084_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_900_000084_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_900_000084_movie_t-3_augB1.jpg", "titan_clip_900_000084_movie_t-2_augB1.jpg", "titan_clip_900_000084_movie_t-1_augB1.jpg", "titan_clip_900_000084_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with brick paving and manholes forms a narrow one-lane roadway with no median, and vehicle traffic is light and slow. A pedestrian wearing a black T-shirt, blue pants, and a cap walks away from the ego car in the center of the lane ahead, occupying the path and constraining speed. A white van is stopped along the left edge ahead, further narrowing the space beside the pedestrian. Several people move along the right sidewalk near shopfronts, with a few standing at the curb.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, blue pants and a cap, walking away from the ego car in front of the ego car. The pedestrian could unexpectedly step into the lane ahead, so the driver should slow down to maintain a safe distance."}
{"id": "train_01028", "split": "train", "clip_key": "2020-0205-103411_096137_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "096137"}, "frames": ["2020-0205-103411_096137_movie_t-3.jpg", "2020-0205-103411_096137_movie_t-2.jpg", "2020-0205-103411_096137_movie_t-1.jpg", "2020-0205-103411_096137_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial has two lanes in the ego direction with painted separation from oncoming lanes; the pavement is dry and the flow is moderate, forming a short queue at the intersection. Ahead in the ego lane, a white truck with a ladder on its bed is stopped because the light is red, holding the ego vehicle. In the adjacent left lane, a white sedan and a van are also stopped slightly ahead, keeping that lane blocked. The opposite-direction lanes on the right look clear. The traffic signal facing the ego direction shows red.", "hazard_reasoning": "A white truck is stopped in front of the ego car in the ego lane, because the light is red. Stop because the truck ahead has halted at the red signal, blocking your path and requiring you to avoid a collision."}
{"id": "train_01029", "split": "train", "clip_key": "2020-0129-144857_000618_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "000618"}, "frames": ["2020-0129-144857_000618_movie_t-3.jpg", "2020-0129-144857_000618_movie_t-2.jpg", "2020-0129-144857_000618_movie_t-1.jpg", "2020-0129-144857_000618_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban intersection in a built-up area on a two-way road without a median has smooth pavement and light traffic as the ego vehicle approaches the crosswalk. A silver minivan ahead in the oncoming lane proceeds through the junction toward us and clears before our path. A white and green truck is parked along the left curb near the intersection, narrowing the approach. Several pedestrians wait on the right corner at the zebra crossing. The traffic signal facing the ego direction shows green.", "hazard_reasoning": "There is a white and green truck parked on the left side of the road. This parked truck may obstruct the driver's line of sight to pedestrians and oncoming vehicles at the intersection, so a careful manoeuvre around it is needed."}
{"id": "train_01030", "split": "train", "clip_key": "titan_clip_1064_000324_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1064_000324_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1064_000324_movie_t-3_augB1.jpg", "titan_clip_1064_000324_movie_t-2_augB1.jpg", "titan_clip_1064_000324_movie_t-1_augB1.jpg", "titan_clip_1064_000324_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrians ahead", "environment_perception": "A narrow urban street with a single shared lane, no median, and smooth pavement shows no moving vehicle traffic. On the right edge near the ego path, three pedestrians walk toward the vehicle where there is no sidewalk, partially occupying the lane. Farther ahead in the lane center, several other pedestrians proceed away from the camera, loosely dispersed and constraining the available path. A white van is parked along the right curb beside vending machines, further narrowing the passage, while a parked bicycle and fencing line the left edge.", "hazard_reasoning": "There are three pedestrians walking towards the ego car, on the right side of the road, because there is no sidewalk. The driver should yield because these pedestrians may step into the roadway, posing a collision risk."}
{"id": "train_01031", "split": "train", "clip_key": "2020-0204-150838_076520_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "076520"}, "frames": ["2020-0204-150838_076520_movie_t-3.jpg", "2020-0204-150838_076520_movie_t-2.jpg", "2020-0204-150838_076520_movie_t-1.jpg", "2020-0204-150838_076520_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway with two same-direction lanes runs alongside a concrete barrier on the right, the pavement is smooth, and traffic is heavy and crawling. A black flatbed truck with a tarped load is directly ahead in the ego lane, slowing repeatedly due to congestion ahead and setting the ego vehicle's pace. To the left, a large white box truck creeps forward slightly ahead in the adjacent lane, paralleling the ego car and limiting room to change lanes. Farther ahead in the left lane, a small dark van inches forward within the queue, keeping gaps tight. No salient signs or signals appear.", "hazard_reasoning": "There's a black truck slowing down in front of the ego car in the ego lane due to traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_01032", "split": "train", "clip_key": "2020-0213-143552_022069_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "022069"}, "frames": ["2020-0213-143552_022069_movie_t-3.jpg", "2020-0213-143552_022069_movie_t-2.jpg", "2020-0213-143552_022069_movie_t-1.jpg", "2020-0213-143552_022069_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way street with no median is seen, pavement dry and traffic heavy as vehicles queue at a signalized intersection. Directly ahead in the ego lane, a brown cargo truck is stopped at the crosswalk because of congestion ahead, fully blocking our path. In the adjacent same-direction lane ahead-left, a tall white box truck is also stopped in the queue, further constraining progress and partly obscuring the junction. To the right in the oncoming lane, a small box truck rolls forward through the intersection at low speed but remains in its lane and does not encroach on the ego lane.", "hazard_reasoning": "There is a brown truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop because the halted vehicle indicates a potential collision risk if not slowing down promptly."}
{"id": "train_01033", "split": "train", "clip_key": "titan_clip_1011_000534_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1011_000534_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1011_000534_movie_t-3_augB1.jpg", "titan_clip_1011_000534_movie_t-2_augB1.jpg", "titan_clip_1011_000534_movie_t-1_augB1.jpg", "titan_clip_1011_000534_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban shopping street with a single narrow lane, no median, and smooth asphalt shows very light vehicle traffic but heavy pedestrian flow as the car approaches a gentle left bend by a FamilyMart. A man wearing a striped T-shirt, blue shorts, and a backpack crosses from the right curb to the left directly in the ego lane ahead, blocking the path. Two pedestrians ahead on the left also walk diagonally across toward the left sidewalk in front of the car, further constraining progress. A small group stands at the right corner by the storefront close to the curb, near the lane where they may enter. A red no-entry sign on the right marks a restricted side street.", "hazard_reasoning": "There is a man, wearing a striped t-shirt and blue shorts, and carrying a backpack, crossing the street, from the right side to the left side, in the ego lane. Therefore, the driver should yield to avoid colliding with the pedestrian crossing ahead."}
{"id": "train_01034", "split": "train", "clip_key": "2020-0207-101955_041364_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "041364"}, "frames": ["2020-0207-101955_041364_movie_t-3.jpg", "2020-0207-101955_041364_movie_t-2.jpg", "2020-0207-101955_041364_movie_t-1.jpg", "2020-0207-101955_041364_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs under an elevated expressway, with two lanes in the same direction, a chevron-marked shoulder and guardrail on the right, and smooth pavement; traffic is light as the roadway bends gently left. On the immediate left edge beside the ego vehicle, a green box truck creeps forward along the lane line and begins to merge, potentially narrowing the ego lane. Far ahead in the same lane, a white truck continues steadily through the curve, setting a distant reference for pace. On a parallel side road beyond the right-side fence, a car travels independently without affecting the ego vehicle.", "hazard_reasoning": "There are no visible hazards in the scene; the road is clear and unobstructed, allowing the driver to maintain a moderate speed safely."}
{"id": "train_01035", "split": "train", "clip_key": "2020-0226-140503_028266_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "028266"}, "frames": ["2020-0226-140503_028266_movie_t-3.jpg", "2020-0226-140503_028266_movie_t-2.jpg", "2020-0226-140503_028266_movie_t-1.jpg", "2020-0226-140503_028266_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped van", "environment_perception": "An urban two-way road with one lane per direction and a solid yellow centerline extends ahead; the asphalt appears wet and traffic is light. A blue van is stopped on the left side of the road beside the ego lane, forming a roadside obstruction. A small silver kei van ahead in the ego lane travels straight past this area and constrains the ego vehicle's pace. In the opposite lane, a few cars approach from far ahead, continuing straight as oncoming traffic. A 40 speed marking is painted on the roadway.", "hazard_reasoning": "There is a blue van stopped on the left side of the road. The stopped van partially blocks the lane, so you should carefully manoeuvre around it to avoid collision and maintain safe clearance."}
{"id": "train_01036", "split": "train", "clip_key": "titan_clip_1192_000570_movie", "source": {"subset": "titan", "scenario": "clip_1192", "frame": "000570"}, "frames": ["titan_clip_1192_000570_movie_t-3.jpg", "titan_clip_1192_000570_movie_t-2.jpg", "titan_clip_1192_000570_movie_t-1.jpg", "titan_clip_1192_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban side street with interlocking stone pavement has no center line or median, buildings tight on both sides, and light, slow-moving traffic. Parked vehicles line the curbs, reducing the usable width. A small black van stands ahead near the center-left of the lane, effectively constraining the ego vehicle's pace. On the left side of the road, a pedestrian wearing a white shirt and blue pants walks toward the ego car within the carriageway because a parked vehicle occupies the curb, and the person may edge into the ego path. Additional pedestrians move along the right sidewalk, staying beside storefronts and not entering the roadway. The parked cars and narrow clearance create mild pinch points and limited sight lines.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and blue pants, and walking on the left side of the road, towards the ego car, because of the parked vehicle. The pedestrian may step into the vehicle's path unexpectedly, so the driver should stay alert and slow down to avoid a collision."}
{"id": "train_01037", "split": "train", "clip_key": "titan_clip_315_000246_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_315_000246_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_315_000246_movie_t-3_augB1.jpg", "titan_clip_315_000246_movie_t-2_augB1.jpg", "titan_clip_315_000246_movie_t-1_augB1.jpg", "titan_clip_315_000246_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for crossing pedestrian", "environment_perception": "A dense urban shopping street with a narrow one-lane carriageway paved in block stones has no divider and very light, slow vehicular flow amid many pedestrians. A pedestrian in a black shirt and shorts crosses directly ahead from left to right, occupying the lane and forcing the ego vehicle to wait. On the right edge, two pedestrians walk along the storefronts near the curb, remaining outside the lane as they pass. Far ahead, a small car sits near the center of the street among distant walkers, moving slowly and loosely setting the pace.", "hazard_reasoning": "A pedestrian wearing a black shirt and shorts is crossing in the middle of the road to the right side. The driver must stop to yield to the pedestrian and prevent a collision."}
{"id": "train_01038", "split": "train", "clip_key": "2020-0218-151547_027723_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "027723"}, "frames": ["2020-0218-151547_027723_movie_t-3.jpg", "2020-0218-151547_027723_movie_t-2.jpg", "2020-0218-151547_027723_movie_t-1.jpg", "2020-0218-151547_027723_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "be cautious of unloading pedestrian", "environment_perception": "An urban arterial runs under an elevated roadway with two same-direction lanes, smooth asphalt, and light to moderate traffic moving steadily. A metal barrier lines the right while several service vehicles are stopped along the left curb, narrowing the usable lane. A white car ahead in the ego lane travels at a steady pace and sets the flow. On the left, a man wearing a purple vest and purple pants stands beside a parked box truck and unloads items near the lane edge, which may bring him into the ego path. Farther back on the left, another person works at an open van door, and the stopped van slightly intrudes toward the travel lane as the ego vehicle proceeds. No signals or unusual signs are prominent.", "hazard_reasoning": "There is a man wearing a purple vest and purple pants and standing on the left side of the road, because he is unloading a parked truck. He could unexpectedly step into the lane while unloading, so the driver should be cautious of this unloading pedestrian."}
{"id": "train_01039", "split": "train", "clip_key": "titan_clip_5_000288_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_5_000288_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_5_000288_movie_t-3_augB1.jpg", "titan_clip_5_000288_movie_t-2_augB1.jpg", "titan_clip_5_000288_movie_t-1_augB1.jpg", "titan_clip_5_000288_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street with a single usable lane and block-paved surface is lined with parked vehicles on the left, and traffic moves lightly at low speeds. Ahead in the middle of the lane, a pedestrian in a blue shirt and black pants pushes a blue cart away from the ego vehicle, moving slowly and constraining the path. Farther ahead in the same direction, a white van proceeds down the street cautiously behind the pedestrian. On the right edge, two pedestrians walk along the sidewalk parallel to the lane without stepping into traffic. A red delivery truck and several white vans are stopped along the left for loading, pinching the roadway, while additional bicycles and a scooter are parked on the right.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, and pushing a blue cart away from the ego car, in the middle of the road. The driver should carefully manoeuvre to avoid colliding with the pedestrian pushing a cart directly ahead."}
{"id": "train_01040", "split": "train", "clip_key": "2020-0207-101955_022585_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "022585"}, "frames": ["2020-0207-101955_022585_movie_t-3.jpg", "2020-0207-101955_022585_movie_t-2.jpg", "2020-0207-101955_022585_movie_t-1.jpg", "2020-0207-101955_022585_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road with a bollard-separated side lane on the right runs between midrise buildings; the pavement is dry and traffic is moderate and moving. A small green-tarped truck ahead in the ego lane accelerates away as the signal ahead shows green, increasing the gap. A black van in the lane to the left travels alongside at a similar pace, limiting space to merge left. Farther ahead in the left lane, a blue flatbed truck moves slowly in a short queue, influencing flow in that lane but not the ego lane. Overhead a straight-ahead blue sign accompanies the green traffic light at the junction, while the right-side side lane remains clear behind red posts.", "hazard_reasoning": "There is a green truck driving in the ego lane, away from the ego car, because of a green traffic light. Following the vehicle ahead helps maintain a safe distance and anticipate any upcoming signal changes at the intersection."}
{"id": "train_01041", "split": "train", "clip_key": "2020-0207-101955_078024_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "078024"}, "frames": ["2020-0207-101955_078024_movie_t-3.jpg", "2020-0207-101955_078024_movie_t-2.jpg", "2020-0207-101955_078024_movie_t-1.jpg", "2020-0207-101955_078024_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban four-lane road with two lanes per direction and no physical median approaches a signalized intersection; the pavement is good and traffic is light. A blue truck ahead in the ego left lane accelerates away through the junction on a green light, leading the ego car. Farther ahead a large white box truck in the same direction continues straight beyond the lights and remains distant. In the opposing lanes to the right, a white van comes through the intersection and proceeds straight without affecting the ego path.", "hazard_reasoning": "There is a blue truck Driving away from the ego car, in the ego lane in front of the ego car, because of the green traffic light. The green signal could change soon, so the driver should be aware of the signal change and adjust speed accordingly."}
{"id": "train_01042", "split": "train", "clip_key": "2020-0210-101957_053235_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "053235"}, "frames": ["2020-0210-101957_053235_movie_t-3.jpg", "2020-0210-101957_053235_movie_t-2.jpg", "2020-0210-101957_053235_movie_t-1.jpg", "2020-0210-101957_053235_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial carries two lanes in the ego direction on the left, divided from oncoming traffic on the right by a low hedge median; pavement is dry and traffic is moderate, bunching at a signalized junction. A black sedan directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. To the left, a large box truck with other vehicles waits in the adjacent lane at the same signal, maintaining the queue. On the opposite carriageway to the right, a silver minivan proceeds along the oncoming lane without slowing. Overhead traffic lights facing the ego direction display red.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of a red traffic light. The driver should stop now to avoid a rear-end collision as the vehicle ahead has halted at the red signal."}
{"id": "train_01043", "split": "train", "clip_key": "titan_clip_304_000186_movie", "source": {"subset": "titan", "scenario": "clip_304", "frame": "000186"}, "frames": ["titan_clip_304_000186_movie_t-3.jpg", "titan_clip_304_000186_movie_t-2.jpg", "titan_clip_304_000186_movie_t-1.jpg", "titan_clip_304_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A quiet urban residential street stretches straight ahead on a narrow two-way road with green shoulder lanes, no median, and smooth pavement; traffic is very light with no vehicles ahead or oncoming as the ego proceeds along the left side. A pedestrian wearing a black T-shirt and black pants walks away on the right shoulder near the curb, moving in the same direction and close to the ego lane, so their proximity may influence the vehicle's path. Bicycles are parked along storefronts on the right but remain off the roadway. A speed-limit 30 sign is visible on a pole to the left.", "hazard_reasoning": "A pedestrian wearing a black t-shirt with black pants is walking on the right side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid collision."}
{"id": "train_01044", "split": "train", "clip_key": "2020-0207-151349_089236_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "089236"}, "frames": ["2020-0207-151349_089236_movie_t-3.jpg", "2020-0207-151349_089236_movie_t-2.jpg", "2020-0207-151349_089236_movie_t-1.jpg", "2020-0207-151349_089236_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction runs straight past an elevated structure, separated from oncoming traffic by a low post median; the pavement is dry and traffic is light, paused at a junction. A black motorcycle waits directly ahead in the ego lane because the traffic light is red, holding the ego car at the stop line. A second motorcycle is slightly ahead in the left lane, also stationary at the line alongside the ego lane. A white van farther left is stopped beside them. The overhead signal ahead shows red and strong sun glare faces the camera.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego car, because of a red traffic light. The ego vehicle must stop to avoid colliding with the halted motorcycle."}
{"id": "train_01045", "split": "train", "clip_key": "titan_clip_294_000090_movie", "source": {"subset": "titan", "scenario": "clip_294", "frame": "000090"}, "frames": ["titan_clip_294_000090_movie_t-3.jpg", "titan_clip_294_000090_movie_t-2.jpg", "titan_clip_294_000090_movie_t-1.jpg", "titan_clip_294_000090_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A quiet urban residential street with a single lane each way and smooth pavement is shown, and traffic is light. The ego vehicle rolls forward from a side street across a zebra crossing to enter the left lane. Ahead on the left, a cyclist wearing black rides away close to the curb within the ego lane, so the rider may constrain the ego vehicle's pace. No other moving vehicles are visible. A 30 speed limit sign and a large 30 marking appear on the road, and a convex mirror is mounted on the right corner. Bicycles are parked along the right sidewalk.", "hazard_reasoning": "There is a cyclist wearing a black dress cycling away from the ego car, because there is no cycling lane, on the left side of the road. The cyclist may suddenly veer into the driving lane, so the driver should slow down to maintain a safe distance."}
{"id": "train_01046", "split": "train", "clip_key": "2020-0131-135401_029159_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "029159"}, "frames": ["2020-0131-135401_029159_movie_t-3.jpg", "2020-0131-135401_029159_movie_t-2.jpg", "2020-0131-135401_029159_movie_t-1.jpg", "2020-0131-135401_029159_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban intersection with two-way streets and no median appears, the pavement is smooth and traffic is moderate, slowing near the crosswalk. Directly ahead on the zebra crossing, a woman pushes a stroller from left to right across the ego lane, occupying part of the crossing. From the right, a white sedan turns in the middle of the intersection into the ego lane, easing past and preparing to merge ahead of the ego car. Farther ahead across the junction, oncoming cars move leftward through the crossing without interacting with the ego lane.", "hazard_reasoning": "There is a white sedan turning in the middle of the intersection, to the ego lane. The driver must stop to avoid a collision with the turning vehicle entering the ego-vehicle's lane."}
{"id": "train_01047", "split": "train", "clip_key": "titan_clip_941_000180_movie", "source": {"subset": "titan", "scenario": "clip_941", "frame": "000180"}, "frames": ["titan_clip_941_000180_movie_t-3.jpg", "titan_clip_941_000180_movie_t-2.jpg", "titan_clip_941_000180_movie_t-1.jpg", "titan_clip_941_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with buildings tight to the curbs has no marked centerline and smooth pavement, and traffic is light with no oncoming vehicles visible. On the left edge close to the ego vehicle, a pedestrian in a white shirt carrying a handbag walks away along the curb, staying near the wall but remaining close to the travel lane. A white van is stopped at the right curb beside the ego position, protruding slightly and narrowing the lane. Farther ahead near the center of the road, a small green cart or trolley stands in the path, constraining the available space. The road bends gently right ahead.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and walking on the left side of the road, away from the ego car. The driver should slow down because the pedestrian may step into the roadway unexpectedly, requiring extra reaction time to avoid a collision under this situation."}
{"id": "train_01048", "split": "train", "clip_key": "2020-0131-103016_062660_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "062660"}, "frames": ["2020-0131-103016_062660_movie_t-3.jpg", "2020-0131-103016_062660_movie_t-2.jpg", "2020-0131-103016_062660_movie_t-1.jpg", "2020-0131-103016_062660_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop and yield to the pedestrian", "environment_perception": "An urban two-way street with one lane each way runs between tall buildings, divided by a narrow railed median; the pavement is dry and traffic is moderate as the view approaches a wide intersection. A white box truck directly ahead in the ego lane rolls slowly over the crosswalk and sets the pace. A pedestrian in a black coat carrying a backpack crosses the zebra from the right toward the median ahead and may enter the ego lane. An oncoming silver truck to the right waits at the crosswalk in its lane beyond the median. Overhead signals and route signs are visible, though the signal aspect is not clear.", "hazard_reasoning": "There is a pedestrian carrying backpack, wearing black coat, and crossing the street in a pedestrian crossing, to the left side of the road. The pedestrian may be obscured by the parked truck as they enter the crosswalk, so the driver should stop to avoid a collision."}
{"id": "train_01049", "split": "train", "clip_key": "titan_clip_86_000510_movie", "source": {"subset": "titan", "scenario": "clip_86", "frame": "000510"}, "frames": ["titan_clip_86_000510_movie_t-3.jpg", "titan_clip_86_000510_movie_t-2.jpg", "titan_clip_86_000510_movie_t-1.jpg", "titan_clip_86_000510_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction, no median, and smooth pavement is lined with parked cars that slow the overall flow. A gray van is stopped ahead in the ego lane in front of the ego car, blocking the path. A white car directly ahead in the same lane slows and waits behind the van, further constraining pace. An oncoming silver sedan travels past in the opposite lane on the right, reducing available space. A black SUV and other parked vehicles sit along the left curb near the ego vehicle, narrowing the corridor.", "hazard_reasoning": "There is a gray van stopped in the ego lane, in front of the ego car. The driver should slow down to avoid a collision with this stationary vehicle."}
{"id": "train_01050", "split": "train", "clip_key": "2020-0129-105040_006170_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "006170"}, "frames": ["2020-0129-105040_006170_movie_t-3.jpg", "2020-0129-105040_006170_movie_t-2.jpg", "2020-0129-105040_006170_movie_t-1.jpg", "2020-0129-105040_006170_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with dry, smooth pavement carries moderate traffic that compresses ahead. A white box truck directly ahead in the ego lane slows because of congestion further up, constraining the ego vehicle's pace. In the lane to the right, a cab-over truck slightly ahead continues straight at a steadier speed, overtaking the slower ego lane. Farther right near the curb, another small white truck proceeds slowly in its lane while maintaining separation from the ego path. Overhead directional signs with Japanese text indicate route choices at 300 m, and mild sun glare from the upper left reduces contrast.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01051", "split": "train", "clip_key": "2020-0131-135401_045002_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "045002"}, "frames": ["2020-0131-135401_045002_movie_t-3.jpg", "2020-0131-135401_045002_movie_t-2.jpg", "2020-0131-135401_045002_movie_t-1.jpg", "2020-0131-135401_045002_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane road with a single yellow centerline runs between close-set buildings, with metal railings along both sidewalks; the pavement is smooth and traffic is light, with minimal oncoming flow. A white hatchback directly ahead in the left-hand ego lane is stopped at the intersection because the light is red, constraining the ego vehicle. Overhead signals show red for the main road, and a zebra crossing spans the approach.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver must stop to avoid colliding with the stationary vehicle held by the red signal."}
{"id": "train_01052", "split": "train", "clip_key": "titan_clip_1094_000132_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1094_000132_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1094_000132_movie_t-3_augB1.jpg", "titan_clip_1094_000132_movie_t-2_augB1.jpg", "titan_clip_1094_000132_movie_t-1_augB1.jpg", "titan_clip_1094_000132_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban backstreet with one narrow lane in each direction and no centerline runs between tall buildings; the pavement is slightly worn and traffic is light, limited mainly by parked vehicles and roadside activity. Ahead, a group of pedestrians in a black shirt, a white shirt, and black pants walks away in the middle of the ego lane, occupying the path. Farther ahead on the right edge, a white flatbed truck is stopped with its rear toward the camera, narrowing the roadway. A worker stands near this truck at the curb and moves along the edge, close to the lane. Parked cars line the left side, and cones with a small excavator mark a work area on the right.", "hazard_reasoning": "There is a group of pedestrians, wearing a black shirt, a white shirt, and black pants, walking in the middle of the ego lane, away from the go car. The driver should slow down because these pedestrians are occupying the travel lane and may unexpectedly enter the vehicle's path."}
{"id": "train_01053", "split": "train", "clip_key": "titan_clip_1111_000072_movie", "source": {"subset": "titan", "scenario": "clip_1111", "frame": "000072"}, "frames": ["titan_clip_1111_000072_movie_t-3.jpg", "titan_clip_1111_000072_movie_t-2.jpg", "titan_clip_1111_000072_movie_t-1.jpg", "titan_clip_1111_000072_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban street between tall buildings is paved with brick and marked only by edge lines, creating a single undivided lane; the surface looks smooth and dry, and traffic is very light with no vehicles present. A pedestrian ahead on the right steps into the roadway and walks diagonally left across the ego lane, directly occupying the vehicle's path. Farther ahead near the left storefront, another pedestrian walks along the roadway within the left side of the lane, constraining the usable space ahead. In the distance near the center of the street, a third person proceeds along the roadway, briefly aligned with the ego lane. No traffic signals or other control devices are prominently visible.", "hazard_reasoning": "No hazards detected in the scene. The absence of moving vehicles and obstacles indicates the driver can continue driving without special precautions."}
{"id": "train_01054", "split": "train", "clip_key": "2020-0131-135401_063097_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "063097"}, "frames": ["2020-0131-135401_063097_movie_t-3.jpg", "2020-0131-135401_063097_movie_t-2.jpg", "2020-0131-135401_063097_movie_t-1.jpg", "2020-0131-135401_063097_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction has a dry, smooth surface, and flexible posts create a separated right-side lane; traffic flows at a steady, moderate pace. A white van ahead in the ego lane drives away from the ego car and sets the pace. To its right, a dump truck continues straight in the adjacent lane at a similar speed, partly blocking the view ahead. Along the left edge, a bicyclist rides forward beside the curb, close to the travel lane but remaining outside the ego path. Pedestrians walk on the left sidewalk.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01055", "split": "train", "clip_key": "titan_clip_1073_000306_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1073_000306_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1073_000306_movie_t-3_augB1.jpg", "titan_clip_1073_000306_movie_t-2_augB1.jpg", "titan_clip_1073_000306_movie_t-1_augB1.jpg", "titan_clip_1073_000306_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of distracted pedestrian", "environment_perception": "An urban neighborhood street has one narrow lane in each direction with no median, smooth pavement, and a gentle right curve; traffic is light. The ego vehicle travels in the left lane of this two-way road. On the left edge just ahead, a pedestrian in a black T-shirt stands looking at a phone, pausing because another person is occupying the left shoulder, positioning them near the ego lane. Farther ahead on the right, a cyclist rides slowly toward the ego vehicle along the curb in the oncoming lane at the curve, reducing space. A white van waits at the right curb ahead in the oncoming lane, further narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, looking into a cell phone, and standing on the left side of the road because of another pedestrian standing on the left shoulder. The driver should be cautious because the distracted pedestrian may step into traffic unexpectedly."}
{"id": "train_01056", "split": "train", "clip_key": "2020-0210-155354_010127_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "010127"}, "frames": ["2020-0210-155354_010127_movie_t-3.jpg", "2020-0210-155354_010127_movie_t-2.jpg", "2020-0210-155354_010127_movie_t-1.jpg", "2020-0210-155354_010127_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the oncoming hatchback.", "environment_perception": "An urban two-way street with one lane in each direction has no median and a zebra-crosswalked intersection; the pavement is dry and traffic is moderate. A silver hatchback approaches in the oncoming lane toward the ego car, staying in its lane as it comes through the intersection. Ahead in the ego lane, a small white van proceeds straight at a steady speed, setting the pace for the ego vehicle. Pedestrians cluster on both sidewalks at the crosswalk, and a cyclist on the left shoulder rolls slowly past them near the curb.", "hazard_reasoning": "There is a silver hatchback driving in the oncoming lane, toward the ego car. The oncoming vehicle could collide with the ego car if it continues in the wrong lane, so the driver should yield to avoid a head-on impact."}
{"id": "train_01057", "split": "train", "clip_key": "2020-0212-102546_009251_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "009251"}, "frames": ["2020-0212-102546_009251_movie_t-3.jpg", "2020-0212-102546_009251_movie_t-2.jpg", "2020-0212-102546_009251_movie_t-1.jpg", "2020-0212-102546_009251_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multilane road approaches a signalized intersection, with smooth pavement, painted islands, and flexible bollards marking the right-side divider; overall flow is slow. A white box truck directly ahead in the ego lane slows toward a stop due to congestion ahead, keeping the ego vehicle behind it. In the adjacent left lane, another large truck runs nearly alongside and moves slowly, further constraining progress. The oncoming side is to the right beyond the bollards, and no oncoming vehicles or pedestrians appear near the crossing.", "hazard_reasoning": "There is a white truck in the ego-car lane that is slowing down, because there is traffic congestion ahead. Driver should stop to maintain safe following distance and avoid collision."}
{"id": "train_01058", "split": "train", "clip_key": "2020-0131-135401_051845_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "051845"}, "frames": ["2020-0131-135401_051845_movie_t-3.jpg", "2020-0131-135401_051845_movie_t-2.jpg", "2020-0131-135401_051845_movie_t-1.jpg", "2020-0131-135401_051845_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a solid yellow center line and no median shows smooth pavement and moderate traffic, with the ego car proceeding in the left lane while steady opposing flow moves on the right. Ahead on the left edge of the ego lane, a cyclist wearing blue jeans, a black jacket, and a black backpack rides away from the ego car along the curb, slightly constraining the ego vehicle's pace. Farther ahead in the same direction, a white minivan proceeds toward the next intersection and eases speed with the flow. In the oncoming lane to the right, a dark van approaches among other opposing vehicles but remains separated by the center line. A roadside sign on the left indicates parking restrictions from 8 to 20.", "hazard_reasoning": "There is a cyclist wearing a pair of blue jeans, black jacket, and carrying a black backpack, cycling away from the ego car. The cyclist is close to the vehicle's path and may change course or slow unexpectedly, so the driver should slow down to maintain a safe distance."}
{"id": "train_01059", "split": "train", "clip_key": "titan_clip_1040_000108_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1040_000108_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1040_000108_movie_t-3_augB1.jpg", "titan_clip_1040_000108_movie_t-2_augB1.jpg", "titan_clip_1040_000108_movie_t-1_augB1.jpg", "titan_clip_1040_000108_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow unmarked carriageway curves slightly right; the pavement is dry and smooth and traffic flow is slow with mixed pedestrians and bicycles. There is no center divider, and storefronts and parked bicycles narrow the usable width. A cyclist in a white shirt rides ahead in the middle of the road, moving away from the ego car, as the sidewalk space is obstructed by parked bicycles. Several pedestrians ahead near the shops on both sides walk and cross casually across the path, potentially entering the ego vehicle's line. On the right, another cyclist at the curb begins to merge into the street, potentially affecting the ego car's pace.", "hazard_reasoning": "There is a cyclist wearing a white shirt, cycling in the middle of the road, away from the ego car, because the sidewalk is blocked. The driver should slow down to avoid a collision with the cyclist riding in the travel lane due to the blocked sidewalk."}
{"id": "train_01060", "split": "train", "clip_key": "titan_clip_257_000372_movie", "source": {"subset": "titan", "scenario": "clip_257", "frame": "000372"}, "frames": ["titan_clip_257_000372_movie_t-3.jpg", "titan_clip_257_000372_movie_t-2.jpg", "titan_clip_257_000372_movie_t-1.jpg", "titan_clip_257_000372_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban residential alley is shown, a single unmarked lane without a divider and with clean asphalt, and there is no moving traffic. A pedestrian wearing a white shirt and holding a white bowl stands at the right edge by a doorway, tending to potted plants close to the travel path and potentially encroaching on the lane. No other vehicles or pedestrians appear ahead or oncoming. Parked bicycles line both sides and planters and a small box on the right narrow the passage, and no traffic signals or regulatory signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and holding a white bowl, standing on the right side of the road. The driver should be aware of the pedestrian as they may step into the vehicle's path, requiring caution to avoid a collision."}
{"id": "train_01061", "split": "train", "clip_key": "2020-0210-101957_048370_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "048370"}, "frames": ["2020-0210-101957_048370_movie_t-3.jpg", "2020-0210-101957_048370_movie_t-2.jpg", "2020-0210-101957_048370_movie_t-1.jpg", "2020-0210-101957_048370_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to maintain safe distance", "environment_perception": "An urban multi-lane arterial runs under an elevated roadway, approaching a wide signalized intersection with no physical median and smooth, dry pavement; traffic is light to moderate and stopped for the red light. A black hatchback is directly ahead in the ego lane, standing still because the signal is red, setting the pace. In the adjacent lane to the left, a red van is also stopped a short distance ahead, aligned for the same direction. On the far left, a gray sedan sits slightly behind the ego vehicle, waiting in its lane. On the far right near the curb, a bicyclist moves slowly along the edge toward the intersection without entering the traffic lane. The overhead traffic signal shows red, and the rightmost lane is marked for right turns; cones line the right shoulder.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_01062", "split": "train", "clip_key": "2020-0129-105040_026175_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "026175"}, "frames": ["2020-0129-105040_026175_movie_t-3.jpg", "2020-0129-105040_026175_movie_t-2.jpg", "2020-0129-105040_026175_movie_t-1.jpg", "2020-0129-105040_026175_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light ahead.", "environment_perception": "An urban multi-lane arterial runs beneath elevated structures, the pavement dry and well marked, with heavy traffic queued at a signal. A yellow-and-orange sedan directly ahead in the ego lane is stationary for a red light, holding the ego vehicle at a standstill. To the right, a white van in the adjacent lane is also stopped in line, limiting the view toward the intersection. On the left near the curb, a motorbike inches forward alongside the queue and may slip ahead into the ego lane. Overhead traffic lights show red at the junction, while guardrails and buildings bound the roadway.", "hazard_reasoning": "{There is a yellow-and-orange sedan stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver must stop at the red light ahead to avoid a rear-end collision with the halted sedan.}"}
{"id": "train_01063", "split": "train", "clip_key": "2020-0206-101736_071915_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "071915"}, "frames": ["2020-0206-101736_071915_movie_t-3.jpg", "2020-0206-101736_071915_movie_t-2.jpg", "2020-0206-101736_071915_movie_t-1.jpg", "2020-0206-101736_071915_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way road runs between mid-rise buildings with dry, smooth pavement and painted centerlines; traffic is moderate and briefly queued at a signalized intersection. A silver truck directly ahead in the ego lane is stopped for a red traffic light, holding the lane and keeping the ego car stationary. To the left, a white van in the adjacent same-direction lane creeps forward beside the truck as the queue forms. Farther ahead in that left lane, another work truck waits near the intersection, adding to the lineup. On the opposing side to the right, sparse oncoming traffic passes without interacting.", "hazard_reasoning": "There is a silver truck stopped in front of the ego car, in the ego lane, because of a red traffic light. As the vehicle ahead is stationary at a red light, the driver must stop to avoid a rear-end collision."}
{"id": "train_01064", "split": "train", "clip_key": "titan_clip_1114_000036_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1114_000036_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1114_000036_movie_t-3_augB1.jpg", "titan_clip_1114_000036_movie_t-2_augB1.jpg", "titan_clip_1114_000036_movie_t-1_augB1.jpg", "titan_clip_1114_000036_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial street with a narrow single lane and brick pavement runs between shops, with no median, light vehicle flow, and many pedestrians; the ego car proceeds slowly along the left side. A pedestrian in a gray shirt and black pants walks away from the ego vehicle in the middle of the road ahead, occupying the path and keeping speed low. Farther ahead, a small white kei truck in the same direction creeps near the center and intermittently pauses, further constraining progress. On the left edge just ahead, a woman with a red backpack walks along the roadway and edges toward the lane, which may bring her into the path. Bicycles and other items line the right curb, slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black pants, walking in the middle of the road, away from the ego car. The pedestrian is crossing in front of the vehicle's path, requiring the driver to manoeuvre carefully around them to maintain safety."}
{"id": "train_01065", "split": "train", "clip_key": "titan_clip_343_000276_movie", "source": {"subset": "titan", "scenario": "clip_343", "frame": "000276"}, "frames": ["titan_clip_343_000276_movie_t-3.jpg", "titan_clip_343_000276_movie_t-2.jpg", "titan_clip_343_000276_movie_t-1.jpg", "titan_clip_343_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "A narrow urban back street with paving-stone pavement functions as a single lane without a divider, and traffic is light and slow. A pedestrian wearing all black walks away from the camera along the left edge of the road, parallel to the ego path and close to the lane. On the right, another pedestrian stands by a storefront at the curb, waiting and watching the roadway. Far ahead in the same lane, a small van creeps along and effectively sets the pace for the ego vehicle. Parked cars sit off the roadway in a lot to the left.", "hazard_reasoning": "There is a pedestrian wearing all black, walking along the left side of the road, away from the ego car. The pedestrian could unexpectedly step into the lane, so the driver should be aware of this potential intrusion into the roadway."}
{"id": "train_01066", "split": "train", "clip_key": "2020-0127-132751_069530_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "069530"}, "frames": ["2020-0127-132751_069530_movie_t-3.jpg", "2020-0127-132751_069530_movie_t-2.jpg", "2020-0127-132751_069530_movie_t-1.jpg", "2020-0127-132751_069530_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban bridge approach on a multi-lane arterial shows dry pavement and guardrails, with traffic bunching and slowing toward the truss bridge ahead. A white van directly ahead in the ego lane is stopped due to congestion, holding the ego vehicle. To the left, a box truck slightly ahead in the adjacent lane inches forward in the same direction, pacing the van and limiting gaps. To the right, another medium truck in the next lane also creeps toward the bridge, extending the queue alongside the ego lane. Parked cars sit along the far-right shoulder behind the guardrail.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and prevent a rear-end collision with the halted vehicle."}
{"id": "train_01067", "split": "train", "clip_key": "titan_clip_706_000492_movie", "source": {"subset": "titan", "scenario": "clip_706", "frame": "000492"}, "frames": ["titan_clip_706_000492_movie_t-3.jpg", "titan_clip_706_000492_movie_t-2.jpg", "titan_clip_706_000492_movie_t-1.jpg", "titan_clip_706_000492_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban shopping street with no marked centerline and smooth pavement appears quiet with very light traffic. On the left in the near foreground, two workers stand at the curb handling cardboard boxes on a handcart, the cart sitting at the edge of the lane and close to the ego vehicle's path. A pedestrian wearing all black walks along the left side toward the ego car, moving along the curb and potentially stepping into the lane. Farther ahead a few pedestrians drift along the shop fronts but stay near the sidewalks. Numerous restaurant boards and a green cone line the right edge, slightly narrowing the usable roadway. No moving vehicles are visible ahead or oncoming during the clip.", "hazard_reasoning": "There is a pedestrian wearing all black, walking walking along the left side of the road, toward the ego car. The pedestrian is moving toward the vehicle's path and may step into the lane, so the driver should be aware and ready to slow down."}
{"id": "train_01068", "split": "train", "clip_key": "2020-0220-151845_029848_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "029848"}, "frames": ["2020-0220-151845_029848_movie_t-3.jpg", "2020-0220-151845_029848_movie_t-2.jpg", "2020-0220-151845_029848_movie_t-1.jpg", "2020-0220-151845_029848_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes and guardrails; the dry pavement looks smooth and traffic is moderate but bunching ahead. A red truck is stopped in the ego lane directly ahead because of congestion, constraining the ego car's pace. A black sedan slightly ahead in the right lane proceeds toward a right-hand diverge marked on the pavement and stays outside the ego path. Farther ahead in the left lane, a white van moves slowly with the queue, reinforcing the slowdown. An overhead electronic signboard on a gantry is visible, and the rightmost lane bears exit guidance.", "hazard_reasoning": "There is a red truck stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_01069", "split": "train", "clip_key": "2020-0225-145150_030822_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-145150_030822_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-145150_030822_movie_t-3_augB1.jpg", "2020-0225-145150_030822_movie_t-2_augB1.jpg", "2020-0225-145150_030822_movie_t-1_augB1.jpg", "2020-0225-145150_030822_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road with two lanes per direction and a painted median runs through a commercial district, the asphalt smooth and traffic moderate, bunching near a wide intersection with zebra crossings. A blue truck directly ahead in the ego lane slows and rolls toward the crosswalk because of congestion ahead, constraining the ego vehicle's pace. On the opposite side, a silver microvan and several cars approach in the right-side oncoming lanes, continuing straight and remaining separated by the median. A few pedestrians stand on the sidewalks near the crosswalks, waiting and not entering the roadway.", "hazard_reasoning": "There is a blue truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the congested traffic ahead."}
{"id": "train_01070", "split": "train", "clip_key": "2020-0210-101957_071481_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "071481"}, "frames": ["2020-0210-101957_071481_movie_t-3.jpg", "2020-0210-101957_071481_movie_t-2.jpg", "2020-0210-101957_071481_movie_t-1.jpg", "2020-0210-101957_071481_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene passes through a suburban residential area on a narrow two-way road with edge lines, no median, smooth pavement, and light traffic as the lane curves gently right. A white van ahead in the ego lane slows, constraining the ego vehicle's pace. An oncoming car appears farther ahead near the bend and continues steadily in its lane without encroaching. No notable signals or speed signs are visible, and metal railings line the right side while trees and buildings sit close to the roadway.", "hazard_reasoning": "There is a white van slowing in the ego lane because of traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and avoid sudden braking."}
{"id": "train_01071", "split": "train", "clip_key": "2020-0204-103442_080347_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "080347"}, "frames": ["2020-0204-103442_080347_movie_t-3.jpg", "2020-0204-103442_080347_movie_t-2.jpg", "2020-0204-103442_080347_movie_t-1.jpg", "2020-0204-103442_080347_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A quiet urban two-lane road in Japan runs between houses and small shops, divided by a yellow center line on smooth pavement with light traffic. A dark hatchback ahead in the ego lane moves slowly near a crosswalk, constraining the ego vehicle's pace. A white car approaches in the opposite lane as oncoming traffic and continues straight without encroaching on the ego lane. On the right sidewalk, a bicyclist rides in the same direction behind a guardrail and stays off the roadway. A small overhead signal is present above the crosswalk but no aspect is clearly visible.", "hazard_reasoning": "There is a blue sedan slowing down in the ego lane because of traffic congestion ahead. You should slow down to maintain a safe distance and avoid a rear-end collision in the congested traffic."}
{"id": "train_01072", "split": "train", "clip_key": "2020-0213-143552_076375_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "076375"}, "frames": ["2020-0213-143552_076375_movie_t-3.jpg", "2020-0213-143552_076375_movie_t-2.jpg", "2020-0213-143552_076375_movie_t-1.jpg", "2020-0213-143552_076375_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "be aware of stopped truck", "environment_perception": "Inside a lit urban tunnel, a two-lane one-way roadway has smooth pavement and light to moderate flow, with the ego vehicle in the right lane. A gray truck ahead in the left lane is stopped, blocking that lane. A large dark truck directly ahead in the ego lane continues slowly, constraining the ego vehicle's pace. Farther ahead on the left, another truck lingers near the stopped vehicle with little movement. No signals are visible, only tunnel lighting and narrow shoulders, and no pedestrians or cyclists appear.", "hazard_reasoning": "There is a gray truck stopped in the left lane. The driver should be aware of its location to anticipate any lane adjustments or sudden braking ahead."}
{"id": "train_01073", "split": "train", "clip_key": "2020-0228-150133_061632_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "061632"}, "frames": ["2020-0228-150133_061632_movie_t-3.jpg", "2020-0228-150133_061632_movie_t-2.jpg", "2020-0228-150133_061632_movie_t-1.jpg", "2020-0228-150133_061632_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and maintain safe distance.", "environment_perception": "An urban two-way arterial with two same-direction lanes runs under a pedestrian overpass; the pavement appears smooth and traffic is heavy and slow. A painted median and a roadside guardrail separate opposing lanes on the right. A black sedan is stopped directly ahead in the ego lane because of congestion farther ahead, holding the ego car. To the left, a white van and a truck in the adjacent lane are also queued and inch forward, matching the stoppage. On the right, an oncoming box truck proceeds past in its lane, separated from the ego path. A distant traffic signal is visible above the lines of vehicles.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane, because of traffic congestion ahead. You should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_01074", "split": "train", "clip_key": "2020-0214-145407_036422_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "036422"}, "frames": ["2020-0214-145407_036422_movie_t-3.jpg", "2020-0214-145407_036422_movie_t-2.jpg", "2020-0214-145407_036422_movie_t-1.jpg", "2020-0214-145407_036422_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, three lanes in the same direction with smooth pavement and a curbside barrier on the right; traffic is moderate and bunches slightly ahead. A white box truck directly ahead in the ego lane slows while continuing forward because of congestion ahead, setting the ego vehicle's pace. A white minivan in the left lane cruises slightly ahead and holds its line without affecting the ego path. Several cars farther ahead across the lanes travel as a compact group, reinforcing the slowdown.", "hazard_reasoning": "There's a white truck slowing down in the ego lane, driving away from the ego car, because of traffic congestion ahead. Slow down to maintain a safe following distance and avoid collision."}
{"id": "train_01075", "split": "train", "clip_key": "2020-0131-135401_036177_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "036177"}, "frames": ["2020-0131-135401_036177_movie_t-3.jpg", "2020-0131-135401_036177_movie_t-2.jpg", "2020-0131-135401_036177_movie_t-1.jpg", "2020-0131-135401_036177_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane in each direction approaches a signalized intersection; the dry pavement is in good condition and traffic is light. A white car directly ahead in the ego lane is stopped and waiting at the stop line because the overhead signal is red, constraining our lane. An oncoming car is near the intersection in the opposite lane and does not affect our path. The signal facing us shows red, and a school-zone pedestrian warning sign stands on the left by the crosswalk.", "hazard_reasoning": "There is a white car stopped in the ego lane because of a red traffic light. The driver should stop to avoid rear-ending the halted vehicle and to comply with the traffic signal."}
{"id": "train_01076", "split": "train", "clip_key": "2020-0204-103442_080325_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "080325"}, "frames": ["2020-0204-103442_080325_movie_t-3.jpg", "2020-0204-103442_080325_movie_t-2.jpg", "2020-0204-103442_080325_movie_t-1.jpg", "2020-0204-103442_080325_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential two-lane road with a solid yellow centerline and smooth pavement runs between low buildings, with railings along both sides; traffic is light toward a signalized intersection ahead. A black sedan directly ahead in the ego lane slows as it nears the intersection because of traffic congestion ahead, constraining the ego car's pace. An oncoming white car approaches in the right-side opposite lane and continues straight without interacting. A cyclist on the right rides forward along the sidewalk edge in the same direction, remaining outside the travel lane.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. You should slow down to maintain a safe following distance and adjust to the congestion ahead."}
{"id": "train_01077", "split": "train", "clip_key": "titan_clip_510_000102_movie", "source": {"subset": "titan", "scenario": "clip_510", "frame": "000102"}, "frames": ["titan_clip_510_000102_movie_t-3.jpg", "titan_clip_510_000102_movie_t-2.jpg", "titan_clip_510_000102_movie_t-1.jpg", "titan_clip_510_000102_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the truck carefully", "environment_perception": "An urban two-way street with one lane per direction descends between buildings, the pavement is smooth, and traffic is light with no median. Ahead in the ego lane, a small cargo truck moves slowly near the centerline and sets the pace. On the left side of the road, a white truck is stopped at the curb within a marked buffer and could merge into the ego lane. On the right sidewalk near a building entrance, a pedestrian stands facing traffic and waits while remaining on the curb. No oncoming vehicles are visible, and no active traffic signals stand out.", "hazard_reasoning": "There is a white truck stopped on the left side of the road. The stopped truck reduces available road width, requiring the driver to manoeuvre around it to maintain safe clearance."}
{"id": "train_01078", "split": "train", "clip_key": "2020-0214-102601_079766_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "079766"}, "frames": ["2020-0214-102601_079766_movie_t-3.jpg", "2020-0214-102601_079766_movie_t-2.jpg", "2020-0214-102601_079766_movie_t-1.jpg", "2020-0214-102601_079766_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid centerline runs through a small town; the pavement is intact with a manhole cover, and traffic is light to moderate. A green-painted bicycle strip lines the left edge and there is no physical median. A black SUV directly ahead in the ego lane slows because traffic is congested farther up the road, constraining the ego vehicle's pace. A pedestrian on the left edge walks away along the green strip beside a brick wall, remaining outside the lane but close to the curb. An oncoming van farther ahead advances in its lane without encroaching. Scaffolding stands by the right-side building.", "hazard_reasoning": "There is a black SUV slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down and maintain a safe following distance due to the reduced speed of the leading vehicle."}
{"id": "train_01079", "split": "train", "clip_key": "titan_clip_473_000186_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_473_000186_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_473_000186_movie_t-3_augB1.jpg", "titan_clip_473_000186_movie_t-2_augB1.jpg", "titan_clip_473_000186_movie_t-1_augB1.jpg", "titan_clip_473_000186_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "An urban back street with a narrow single-lane carriageway paved with interlocking bricks appears damp, with buildings tight to the curb and light vehicle traffic moving slowly due to a partial blockage. A group of pedestrians ahead walks toward the ego vehicle in the middle of the lane to get around a parked truck on the right, occupying the path and constraining progress. On the left foreground, a backpacked pedestrian walks along the curb past the ego lane close to the vehicle's path. On the right foreground, another pedestrian passes by near the shopfront in the opposite direction, also close to the lane. A work truck stands on the right with cones and materials, narrowing the roadway and creating a pinch point.", "hazard_reasoning": "There is a group of pedestrians walking in front of and towards the ego car, because of the parked vehicle. Be aware of pedestrians ahead due to limited visibility caused by the parked truck."}
{"id": "train_01080", "split": "train", "clip_key": "titan_clip_904_000060_movie", "source": {"subset": "titan", "scenario": "clip_904", "frame": "000060"}, "frames": ["titan_clip_904_000060_movie_t-3.jpg", "titan_clip_904_000060_movie_t-2.jpg", "titan_clip_904_000060_movie_t-1.jpg", "titan_clip_904_000060_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban neighborhood street has one narrow lane in each direction, no median, smooth pavement, and light traffic. A roadside work zone occupies the left side of the road. On the left shoulder ahead, a pedestrian in a yellow safety vest stands and signals to the ego car, directing passage around the work area. Farther ahead on the right, an oncoming cyclist rides toward the camera along the curb, continuing straight and staying in their lane. A utility truck is stopped on the left with cones and a mounted ladder, partially intruding into the ego lane and narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a yellow vest, standing on the left side of the road, giving signal to the ego car. The pedestrian is directing traffic and may step into the lane, so the driver should carefully maneuver to avoid collision and ensure safety."}
{"id": "train_01081", "split": "train", "clip_key": "2020-0131-135401_003945_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003945"}, "frames": ["2020-0131-135401_003945_movie_t-3.jpg", "2020-0131-135401_003945_movie_t-2.jpg", "2020-0131-135401_003945_movie_t-1.jpg", "2020-0131-135401_003945_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each way runs past apartments; pavement is smooth and traffic is light, with a raised curb protecting a narrow bicycle lane on the left. A white box truck is stopped directly ahead in the ego lane, blocking forward travel and constraining the ego car. Two cyclists ride ahead along the left-side raised bikeway in the same direction, moving steadily and remaining separated by the curb from the traffic lane. A pedestrian walks farther ahead on the same side path, continuing away from the camera. An overhead speed limit sign shows 40, and strong sun glare from the upper right reduces contrast.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane. The truck's unexpected stop ahead poses a collision risk, so the driver should stop to maintain safety."}
{"id": "train_01082", "split": "train", "clip_key": "2020-0220-102630_019446_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_019446_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_019446_movie_t-3_augB1.jpg", "2020-0220-102630_019446_movie_t-2_augB1.jpg", "2020-0220-102630_019446_movie_t-1_augB1.jpg", "2020-0220-102630_019446_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road without a center median runs between mid-rise buildings; the pavement is dry and intact, and same-direction traffic is heavy and slow. A white sedan directly ahead in the ego lane slows and closes the gap to the queue because traffic is congested ahead. To the right, a black kei van creeps forward in the adjacent lane alongside the ego vehicle, limiting room to merge. Farther ahead, a tall box truck remains nearly stopped at the head of the line, constraining overall pace.", "hazard_reasoning": "There's a white sedan slowing down, in front of the ego car, in the ego lane because there's traffic congestion ahead. The sedan's reduced speed due to congestion requires you to decelerate to maintain a safe following distance and prevent a collision."}
{"id": "train_01083", "split": "train", "clip_key": "2020-0213-143552_056933_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "056933"}, "frames": ["2020-0213-143552_056933_movie_t-3.jpg", "2020-0213-143552_056933_movie_t-2.jpg", "2020-0213-143552_056933_movie_t-1.jpg", "2020-0213-143552_056933_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with mid-rise buildings, smooth pavement, and a low shrub median carries light-to-moderate two-way traffic; the ego vehicle proceeds in the left lane. Ahead in the ego lane, a white box truck drives away at a steady pace and effectively sets the ego car's following speed. In the opposite lanes beyond the median, a larger white truck approaches in oncoming traffic with several cars behind it, separated from the ego's path. On the left edge close to the ego, a silver van travels in a side lane parallel to the ego's lane, moving slowly with no immediate merge visible.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. Following this vehicle helps maintain safe distance and allows the driver to anticipate any sudden braking or slowdowns by the truck."}
{"id": "train_01084", "split": "train", "clip_key": "titan_clip_246_000528_movie", "source": {"subset": "titan", "scenario": "clip_246", "frame": "000528"}, "frames": ["titan_clip_246_000528_movie_t-3.jpg", "titan_clip_246_000528_movie_t-2.jpg", "titan_clip_246_000528_movie_t-1.jpg", "titan_clip_246_000528_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban side street with no marked lanes and smooth pavement runs between midrise buildings, and traffic is light with no oncoming vehicles visible. On the right edge ahead, a pedestrian in a yellow shirt and black pants carries a handbag and walks away from the ego vehicle, edging around an A-frame signboard outside a caf and staying close to the curb, which may bring them near the travel line. On the left, a large box truck is stopped for loading with its rear door open, liftgate down, and rolling racks at the curb while a worker stands at the back, narrowing the roadway and constraining the ego vehicle's pace. Caf seating and signage line the right, adding visual clutter close to the lane.", "hazard_reasoning": "There is a pedestrian wearing a yellow shirt and black pants, carrying a handbag, and walking on the left side of the road, away from the ego car, because of the signboard. The driver should carefully manoeuvre around the pedestrian to maintain safe clearance and avoid a collision."}
{"id": "train_01085", "split": "train", "clip_key": "2020-0210-142719_004061_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "004061"}, "frames": ["2020-0210-142719_004061_movie_t-3.jpg", "2020-0210-142719_004061_movie_t-2.jpg", "2020-0210-142719_004061_movie_t-1.jpg", "2020-0210-142719_004061_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban commercial street with two same-direction lanes and no median is seen, the pavement dry and smooth and traffic light to moderate. A black van ahead in the ego lane drifts left across the dashed line and completes a lane change into the left lane, opening space ahead. A bicyclist farther ahead near the right curb rides straight along the curb lane, moving slowly and occupying the edge of the ego path. Several pedestrians stand and walk on the left sidewalk behind a railing, remaining off the roadway. Bicycles are parked along both sides, narrowing the roadside space.", "hazard_reasoning": "There is a black van in front of the ego car, changing lanes from the ego lane into the left lane. The van's lane change encroaches on your path, so you should manoeuvre around it to maintain a safe distance."}
{"id": "train_01086", "split": "train", "clip_key": "titan_clip_1190_000342_movie", "source": {"subset": "titan", "scenario": "clip_1190", "frame": "000342"}, "frames": ["titan_clip_1190_000342_movie_t-3.jpg", "titan_clip_1190_000342_movie_t-2.jpg", "titan_clip_1190_000342_movie_t-1.jpg", "titan_clip_1190_000342_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around her", "environment_perception": "A narrow urban back street with a single shared lane and no centerline runs between shopfronts, the pavement dry and patchy, and traffic is light with no nearby vehicles. Ahead in the ego lane, a woman carrying a handbag moves from the right side toward the left across the middle of the road, walking away from the ego car as restaurant signs and menu boards crowd the right sidewalk. Farther ahead near the center, another pedestrian continues straight in the same direction without affecting the ego path. A small vehicle is visible in the distance along the same route, proceeding slowly. Freestanding signboards and utility poles squeeze the corridor but do not block the lane.", "hazard_reasoning": "There is a woman carrying a handbag, wearing a black-and-green dress, and crossing the middle of the road from the right side to the left side, away from the ego-car because of restaurant signs on the right side. The driver should carefully manoeuvre around her since she is crossing unexpectedly in a narrow street."}
{"id": "train_01087", "split": "train", "clip_key": "titan_clip_920_000306_movie", "source": {"subset": "titan", "scenario": "clip_920", "frame": "000306"}, "frames": ["titan_clip_920_000306_movie_t-3.jpg", "titan_clip_920_000306_movie_t-2.jpg", "titan_clip_920_000306_movie_t-1.jpg", "titan_clip_920_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban side street with smooth pavement and no median extends ahead, effectively a single mixed-traffic lane, and traffic is very light with no moving vehicles visible. Ahead on the right curb a white box truck is parked partly in the roadway, and a pedestrian wearing a red shirt and black pants stands in its open rear doorway, lingering near the travel lane and may enter the ego lane as loading continues. The remainder of the roadway ahead is clear with no oncoming traffic. Roadside signs on the left show parking restrictions and pedestrian-related guidance, and a convex mirror is mounted above them.", "hazard_reasoning": "There is a pedestrian wearing a red shirt and black pants, and standing in the open doorway of a parked truck, on the right side of the road. The pedestrian may step into the road from behind the truck, so you should carefully manoeuvre to avoid a potential collision."}
{"id": "train_01088", "split": "train", "clip_key": "2020-0203-154554_067730_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "067730"}, "frames": ["2020-0203-154554_067730_movie_t-3.jpg", "2020-0203-154554_067730_movie_t-2.jpg", "2020-0203-154554_067730_movie_t-1.jpg", "2020-0203-154554_067730_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two lanes per direction and a painted hatched median is dry and smooth, with heavy same-direction traffic that often halts while oncoming flow is lighter. Directly ahead in the ego lane, a white motorcycle is stopped because of congestion and remains in the ego vehicle's path. In front of it, an orange microcar is also stopped or creeping, leading the queue and constraining the pace. To the left, a white sedan in the adjacent lane inches forward alongside the ego vehicle. On the opposite side, a black car and other oncoming vehicles pass steadily. Low sun ahead creates noticeable glare.", "hazard_reasoning": "There is a white motorcycle stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver must stop to avoid a rear-end collision with the stationary motorcycle in their lane."}
{"id": "train_01089", "split": "train", "clip_key": "2020-0131-135401_005279_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "005279"}, "frames": ["2020-0131-135401_005279_movie_t-3.jpg", "2020-0131-135401_005279_movie_t-2.jpg", "2020-0131-135401_005279_movie_t-1.jpg", "2020-0131-135401_005279_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction runs between low-rise buildings, the asphalt smooth with a painted centerline and light overall traffic. Directly ahead in the ego lane, a white box truck is stopped, blocking the path and constraining the ego vehicle's movement. On the left walkway slightly ahead, two pedestrians walk away along the separated path, remaining off the roadway and not affecting the lane. The visible oncoming lane has no vehicles in view. An overhead sign shows a 40 speed limit. Strong sun glare from the upper right casts long shadows, and a raised curb and right-side guardrail line the road.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The truck blocks visibility ahead and may require the ego driver to stop suddenly to avoid a collision."}
{"id": "train_01090", "split": "train", "clip_key": "2020-0213-143552_066680_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "066680"}, "frames": ["2020-0213-143552_066680_movie_t-3.jpg", "2020-0213-143552_066680_movie_t-2.jpg", "2020-0213-143552_066680_movie_t-1.jpg", "2020-0213-143552_066680_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid rear-ending the stopped truck.", "environment_perception": "An urban two-lane road is divided from oncoming traffic by a hedge and railing, the pavement is dry, and overall flow is slow and congested. A white box truck is stopped directly ahead in the ego lane, holding the queue and blocking the path. To the left, a blue hatchback alongside inches forward in the adjacent lane without moving toward the ego lane. Farther ahead in that left lane, a dark sedan waits in line and creeps, maintaining the slow pace. No salient signals are visible.", "hazard_reasoning": "There is a white truck stopped in front of the ego car. The driver should stop to maintain a safe following distance and avoid a collision with the stopped truck."}
{"id": "train_01091", "split": "train", "clip_key": "2020-0204-150838_011597_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "011597"}, "frames": ["2020-0204-150838_011597_movie_t-3.jpg", "2020-0204-150838_011597_movie_t-2.jpg", "2020-0204-150838_011597_movie_t-1.jpg", "2020-0204-150838_011597_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban multi-lane arterial with smooth, dry pavement carries heavy, stop-and-go traffic toward a signalized intersection. Lanes run in the same direction with buildings tight to the sides, and vehicles queue ahead. A black sedan directly ahead in the ego lane slows with brake lights illuminated due to congestion, constraining the ego car's pace. Farther ahead in the same stream, a white van waits near the intersection, contributing to the backup. In the lane to the right, a white minivan creeps forward parallel to the ego vehicle, remaining in its lane while matching the slow flow. An overhead traffic signal governs the junction ahead, and the approach is fully queued.", "hazard_reasoning": "There is a black sedan slowing in front of the ego car in the ego lane, because of traffic congestion. Stop immediately to avoid collision."}
{"id": "train_01092", "split": "train", "clip_key": "2020-0207-151349_077498_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "077498"}, "frames": ["2020-0207-151349_077498_movie_t-3.jpg", "2020-0207-151349_077498_movie_t-2.jpg", "2020-0207-151349_077498_movie_t-1.jpg", "2020-0207-151349_077498_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs under an elevated expressway, with a right-side guardrail and pillars and dry pavement; traffic is slow-moving. A gray truck directly ahead in the ego lane slows because of congestion ahead, holding the ego vehicle to its pace. In the adjacent left lane, a dark sedan draws alongside and passes forward through the queue. Farther ahead in the left lane, a white van also slows with the line of same-direction vehicles. Overhead directional signs are visible, and pedestrians stand along the left sidewalk behind railings.", "hazard_reasoning": "There is a gray truck slowing down in front of the ego-car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01093", "split": "train", "clip_key": "titan_clip_1055_000072_movie", "source": {"subset": "titan", "scenario": "clip_1055", "frame": "000072"}, "frames": ["titan_clip_1055_000072_movie_t-3.jpg", "titan_clip_1055_000072_movie_t-2.jpg", "titan_clip_1055_000072_movie_t-1.jpg", "titan_clip_1055_000072_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with one lane in each direction and no median runs between mid-rise buildings; the pavement looks smooth and traffic is light. Ahead on the left side of the ego lane, a white sedan angles and reverses to parallel park into a vacant curbside space, away from the ego car, briefly protruding into the travel lane. Farther ahead in the same direction, a few cars continue straight at low speed without affecting the ego vehicle. An oncoming car approaches in its lane. Pedestrians on the right sidewalk walk past a building entrance and linger near the curb but remain on the sidewalk.", "hazard_reasoning": "There is a white sedan parallel parking on the left side of the road, away from the ego car, because there is a vacant parking spot. The sedan could re-enter traffic unexpectedly, so the driver should slow down to avoid collision."}
{"id": "train_01094", "split": "train", "clip_key": "2020-0214-145407_037299_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "037299"}, "frames": ["2020-0214-145407_037299_movie_t-3.jpg", "2020-0214-145407_037299_movie_t-2.jpg", "2020-0214-145407_037299_movie_t-1.jpg", "2020-0214-145407_037299_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban single-lane ramp runs between a construction site on the left and a large roadside structure on the right, with smooth pavement and guardrails; traffic is light but constrained. A white box truck directly ahead in the ego lane slows as traffic congestion builds farther ahead, setting the ego vehicle's pace. A pedestrian walks along the fenced walkway on the left, separated from the road and not affecting movement. Roadside boards on the right show guidance and a height-clearance notice.", "hazard_reasoning": "There is a white truck slowing in the ego-car lane, because of traffic congestion ahead. This slowing truck indicates reduced traffic flow ahead, so you should slow down to maintain a safe following distance."}
{"id": "train_01095", "split": "train", "clip_key": "2020-0131-135401_018054_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "018054"}, "frames": ["2020-0131-135401_018054_movie_t-3.jpg", "2020-0131-135401_018054_movie_t-2.jpg", "2020-0131-135401_018054_movie_t-1.jpg", "2020-0131-135401_018054_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection beneath an elevated expressway; lanes are well marked, pavement is dry, and traffic flow is momentarily stopped at the light. A black van directly ahead in the ego lane is stationary because the overhead signal shows red, holding the ego vehicle at the stop. A cyclist in the blue bike lane along the left edge rides slowly toward the intersection, staying to the side but remaining visible near the ego vehicle's path. A pedestrian walks along the left sidewalk in the same direction with no interaction.", "hazard_reasoning": "A black van is stopped in front of the ego car in the ego lane, because the light is red. The driver must stop to avoid colliding with the halted vehicle at the red signal and ensure safety."}
{"id": "train_01096", "split": "train", "clip_key": "2020-0217-144444_013397_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "013397"}, "frames": ["2020-0217-144444_013397_movie_t-3.jpg", "2020-0217-144444_013397_movie_t-2.jpg", "2020-0217-144444_013397_movie_t-1.jpg", "2020-0217-144444_013397_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to merging hatchback", "environment_perception": "An urban street with two marked lanes runs between tall buildings; the pavement is dry and traffic is light but briefly slows near a curbside work vehicle. Directly ahead, a black hatchback moves from the ego lane to the right lane in front of the ego car because a small flatbed truck ahead on the left is slowing by the curb. Farther ahead left, that truck remains slow or stopped, narrowing the lane and setting the pace. On the right at a driveway, a white van waits to merge into traffic after the hatchback clears. Pedestrians stay on the sidewalks.", "hazard_reasoning": "There is a black hatchback lane changing in front of the ego car, to the right lane, because of the truck slowing ahead on the road. Yield to the merging hatchback to avoid a collision risk."}
{"id": "train_01097", "split": "train", "clip_key": "2020-0228-102841_023344_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "023344"}, "frames": ["2020-0228-102841_023344_movie_t-3.jpg", "2020-0228-102841_023344_movie_t-2.jpg", "2020-0228-102841_023344_movie_t-1.jpg", "2020-0228-102841_023344_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of potential lane changes", "environment_perception": "An urban multi-lane two-way road approaches a signalized intersection with good pavement and light traffic. Ahead in the left lane, a black minivan drives away from the ego car through the junction along the same path. On the right sidewalk at the corner, several pedestrians with bicycles stand near the railing and crosswalk, remaining clear of the roadway. No oncoming vehicles are prominent, and the scene includes overhead traffic lights and roadside railings, with no obstacles in the lane.", "hazard_reasoning": "There is a black minivan driving in the left lane, away from the ego car. The minivan could change lanes unexpectedly and encroach on the ego-vehicle's path, so the driver should stay alert for potential lane changes."}
{"id": "train_01098", "split": "train", "clip_key": "2020-0205-152530_039108_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "039108"}, "frames": ["2020-0205-152530_039108_movie_t-3.jpg", "2020-0205-152530_039108_movie_t-2.jpg", "2020-0205-152530_039108_movie_t-1.jpg", "2020-0205-152530_039108_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane boulevard with smooth pavement is divided by a central barrier, and traffic flows lightly through a signalized intersection under a green light; oncoming lanes run on the far right. A black sedan ahead in the ego lane pulls away through the intersection on the green, effectively leading the ego vehicle. Slightly ahead to the right, a dark boxy van in the adjacent lane continues straight at a steady speed, occupying the space for a possible lane change. Farther ahead and slightly left, a white van also proceeds through the junction, maintaining its lane and spacing. Pedestrians cluster at both corners by the crosswalks, waiting on the sidewalks as vehicles pass.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01099", "split": "train", "clip_key": "titan_clip_1275_000222_movie", "source": {"subset": "titan", "scenario": "clip_1275", "frame": "000222"}, "frames": ["titan_clip_1275_000222_movie_t-3.jpg", "titan_clip_1275_000222_movie_t-2.jpg", "titan_clip_1275_000222_movie_t-1.jpg", "titan_clip_1275_000222_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way side street with closely spaced buildings has smooth dry pavement and very light traffic as the ego vehicle proceeds slowly along a single shared lane. A large box truck is parked on the left, encroaching into the lane and narrowing the roadway. Ahead in the middle of the road, a pedestrian in a white shirt and black pants walks away from the ego vehicle to pass the parked truck, occupying the ego path and constraining its pace. No other moving vehicles or traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking in the middle of the road, away from the ego car, because of a parked vehicle. The driver should manoeuvre carefully around the pedestrian to maintain a safe distance and avoid collision."}
{"id": "train_01100", "split": "train", "clip_key": "2020-0212-102546_002601_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "002601"}, "frames": ["2020-0212-102546_002601_movie_t-3.jpg", "2020-0212-102546_002601_movie_t-2.jpg", "2020-0212-102546_002601_movie_t-1.jpg", "2020-0212-102546_002601_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to the cutting-in black sedan", "environment_perception": "An urban signalized intersection with smooth pavement comes into view, the ego vehicle waiting in the left lane of a two-way road as light traffic moves through. A black sedan from the left cuts in front of the ego car toward the road on the right, turning across the lane and forcing the ego vehicle to pause. Ahead to the right, a white box truck continues through the junction along the cross street, moving away from the camera and occupying the crossing flow. Several pedestrians stand at the near and far corners and walk across the right-side crosswalk, close to the intersection but clear of the ego lane. A no-entry sign faces the narrow side street on the left.", "hazard_reasoning": "There is a black sedan cutting in front of the ego car, toward the road on the right. You should yield because the sedan is merging sharply into your lane and may cause a collision if not given right of way."}
{"id": "train_01101", "split": "train", "clip_key": "2020-0204-103442_023662_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "023662"}, "frames": ["2020-0204-103442_023662_movie_t-3.jpg", "2020-0204-103442_023662_movie_t-2.jpg", "2020-0204-103442_023662_movie_t-1.jpg", "2020-0204-103442_023662_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection lies under an elevated roadway, with multiple same-direction lanes and dry pavement; traffic appears moderate. A white SUV directly ahead in the ego lane is stopped at the intersection for a red light, holding the ego vehicle. A white utility truck slightly ahead to the left in the adjacent lane is also halted by the signal. On the cross street to the right, a bus and several cars move left to right through the junction while our approach waits. The traffic signal facing the ego approach shows red. Buildings and sidewalks frame the scene, and the approach is clear of hazards or obstructions.", "hazard_reasoning": "There is a white sedan stopped in front of the ego-car, in the ego lane, because of a red traffic light ahead. The driver should stop to maintain a safe distance and comply with the traffic signal to avoid collision."}
{"id": "train_01102", "split": "train", "clip_key": "titan_clip_917_000054_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_917_000054_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_917_000054_movie_t-3_augB1.jpg", "titan_clip_917_000054_movie_t-2_augB1.jpg", "titan_clip_917_000054_movie_t-1_augB1.jpg", "titan_clip_917_000054_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian", "environment_perception": "A narrow urban commercial street with a single vehicle lane and smooth pavement shows light traffic with no moving cars. A pedestrian wearing a white T-shirt, black shorts, and a backpack walks away from the ego car along the left side of the lane, occupying the driving path. Two pedestrians ahead near the center also walk away in the lane, reducing available space. On the right ahead, a blue truck is parked with orange cones, narrowing the lane, while two pedestrians move alongside it close to the roadway. No traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, black pants and carrying a backpack, walking on the left side of the road, away from the ego car. The pedestrian could step into the lane unexpectedly, so the driver should remain cautious to avoid a potential collision."}
{"id": "train_01103", "split": "train", "clip_key": "titan_clip_434_000168_movie", "source": {"subset": "titan", "scenario": "clip_434", "frame": "000168"}, "frames": ["titan_clip_434_000168_movie_t-3.jpg", "titan_clip_434_000168_movie_t-2.jpg", "titan_clip_434_000168_movie_t-1.jpg", "titan_clip_434_000168_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial back street with a single narrow lane and no divider runs between buildings; the interlocking-brick pavement looks sound and traffic is light with no moving vehicles as pedestrians share the roadway. On the left edge near the ego path, a man carrying a handbag and an umbrella walks away from the car along the curb, staying close but within the lane's margin. Ahead in the center of the lane, a person in a striped shirt walks away toward the brighter junction, constraining the ego vehicle's pace. Farther ahead, two pedestrians cross from right to left across the lane, briefly occupying the vehicle's path. A white van is parked along the left curb, and bicycles and bins line the right side, narrowing the usable width.", "hazard_reasoning": "There is a man with a handbag and an umbrella, walking on the left side of the road, away from the ego-car. The pedestrian is close to the travel lane and may step into the vehicle's path unexpectedly, so slowing down maintains a safe buffer."}
{"id": "train_01104", "split": "train", "clip_key": "2020-0220-151845_048540_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "048540"}, "frames": ["2020-0220-151845_048540_movie_t-3.jpg", "2020-0220-151845_048540_movie_t-2.jpg", "2020-0220-151845_048540_movie_t-1.jpg", "2020-0220-151845_048540_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated roadway carries multiple same-direction lanes with no oncoming traffic visible; the pavement looks smooth and traffic is heavy and slow. A red truck ahead in the ego lane slows and queues because of congestion, holding the ego vehicle back. A silver kei van slightly ahead in the left lane crawls forward parallel to the ego lane. A black SUV in the adjacent right lane edges forward alongside the ego car, staying parallel. Overhead blue direction signs indicate upcoming routes and an interchange.", "hazard_reasoning": "There is a red truck slowing in the ego lane, away from the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and react to the reduced speed of the truck ahead."}
{"id": "train_01105", "split": "train", "clip_key": "titan_clip_758_000042_movie", "source": {"subset": "titan", "scenario": "clip_758", "frame": "000042"}, "frames": ["titan_clip_758_000042_movie_t-3.jpg", "titan_clip_758_000042_movie_t-2.jpg", "titan_clip_758_000042_movie_t-1.jpg", "titan_clip_758_000042_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with tall buildings comes into view as the ego vehicle proceeds along a narrow single-lane road without a median; the pavement is worn with cracks and traffic is very light with no nearby vehicles. A pedestrian on the left at the wide crosswalk walks toward the roadway ahead and may enter the ego lane. An extended roadside work zone on the right, marked by orange netting, cones, and barriers, narrows the edge of the carriageway, and additional scaffolding and barricades stand on the left near the intersection.", "hazard_reasoning": "No hazards are present, so no warning is required."}
{"id": "train_01106", "split": "train", "clip_key": "2020-0131-103016_064375_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "064375"}, "frames": ["2020-0131-103016_064375_movie_t-3.jpg", "2020-0131-103016_064375_movie_t-2.jpg", "2020-0131-103016_064375_movie_t-1.jpg", "2020-0131-103016_064375_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming truck", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection beneath a pedestrian overpass, with a central median and dry, well-kept pavement; traffic is moderate and moves slowly toward the junction. Several same-direction trucks and cars ahead in the ego lanes proceed straight, their speed setting the pace for the ego vehicle. To the right front, an orange truck oncoming in the lane to the right of the ego car approaches the intersection and continues straight in the opposing flow. In the nearest oncoming lane at the right edge, a silver van advances toward the crosswalk and carries on straight past the ego position.", "hazard_reasoning": "There is an orange truck oncoming in the lane to the right of the ego car. The truck may merge into the ego-vehicle's path at the intersection, so the driver should yield to avoid a collision."}
{"id": "train_01107", "split": "train", "clip_key": "2020-0228-102841_095220_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "095220"}, "frames": ["2020-0228-102841_095220_movie_t-3.jpg", "2020-0228-102841_095220_movie_t-2.jpg", "2020-0228-102841_095220_movie_t-1.jpg", "2020-0228-102841_095220_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way multilane road approaches a signalized intersection; the ego vehicle is in the left lane beside a narrow curb lane, the pavement is dry, and traffic is moderate with our direction queued while oncoming flow continues. A white hatchback directly ahead in the ego lane is stopped at the line because the traffic signal is red. To the right, a large white box truck in the oncoming lanes advances through the junction, passing opposite our queue. A small white kei truck follows in the adjacent oncoming lane, also proceeding straight. Two pedestrians wait on the left sidewalk near the corner.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, because of the red traffic light. The driver should stop to avoid a collision with the halted vehicle at the red light."}
{"id": "train_01108", "split": "train", "clip_key": "2020-0203-154554_049087_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "049087"}, "frames": ["2020-0203-154554_049087_movie_t-3.jpg", "2020-0203-154554_049087_movie_t-2.jpg", "2020-0203-154554_049087_movie_t-1.jpg", "2020-0203-154554_049087_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial runs beneath an elevated expressway, with two lanes in the ego direction and a guardrail separating opposing traffic; the pavement looks dry and traffic is heavy and queued at a signal. A silver sedan directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the adjacent right lane, a dark minivan slightly ahead is also stopped in the queue. Farther ahead-right, a small flatbed truck waits near the intersection and constrains available space. Beyond the guardrail on the left, oncoming cars pass independently. Overhead traffic lights facing the ego direction display solid red.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid colliding with the stationary sedan under the red light."}
{"id": "train_01109", "split": "train", "clip_key": "2020-0210-101957_001226_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "001226"}, "frames": ["2020-0210-101957_001226_movie_t-3.jpg", "2020-0210-101957_001226_movie_t-2.jpg", "2020-0210-101957_001226_movie_t-1.jpg", "2020-0210-101957_001226_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street with one lane each way curves gently right, the pavement is smooth, and traffic is light; the ego vehicle waits in the left lane at a signalized crosswalk under a red light. A black van is stopped ahead on the left side near the curb, partially occupying the ego lane and likely to constrain the path when traffic moves. Several pedestrians walk along both sidewalks behind guardrails and a few stand near the crosswalk without stepping into the road. Farther ahead, a few oncoming cars travel in the opposing right-side lane and continue past the intersection without affecting the ego.", "hazard_reasoning": "There is a black van that has stopped on the left side of the road in front of the ego car. The driver should carefully manoeuvre to avoid colliding with the stationary vehicle."}
{"id": "train_01110", "split": "train", "clip_key": "2020-0212-102546_026012_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "026012"}, "frames": ["2020-0212-102546_026012_movie_t-3.jpg", "2020-0212-102546_026012_movie_t-2.jpg", "2020-0212-102546_026012_movie_t-1.jpg", "2020-0212-102546_026012_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with a shrub median on the right and dry, slightly worn pavement carries heavy same-direction queues, while oncoming traffic is separated by the median and not visible. A brown van directly ahead in the ego lane is stopped because an overhead signal farther ahead shows red, and the queue forms behind it. A large white box truck farther ahead slightly left creeps toward the intersection and sets the overall pace. Several white vans in the adjacent left lane edge forward slowly alongside, with small gaps that may open toward the ego lane. A short merge lane appears on the right beside the median but remains empty.", "hazard_reasoning": "There is a brown van stopped in the ego lane, because of a red traffic light ahead. The stopped van indicates the signal is red, so you must stop to avoid a collision."}
{"id": "train_01111", "split": "train", "clip_key": "2020-0214-102601_086092_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "086092"}, "frames": ["2020-0214-102601_086092_movie_t-3.jpg", "2020-0214-102601_086092_movie_t-2.jpg", "2020-0214-102601_086092_movie_t-1.jpg", "2020-0214-102601_086092_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane two-way street with a solid center line and no median runs through a neighborhood of shops and trees; the pavement is narrow and patched, and traffic is light. A black SUV ahead in the ego lane slows, matching the caption and dictating the ego vehicle's pace. An oncoming white van advances in the opposite lane and passes by at a steady speed, keeping to its side and leaving limited lateral clearance on the narrow roadway. Two cyclists travel along the left sidewalk near the curb, moving in the same direction parallel to the ego lane and remaining close to the travel path.", "hazard_reasoning": "There is a black SUV slowing down in the ego lane. Slow down to maintain a safe following distance and avoid collision."}
{"id": "train_01112", "split": "train", "clip_key": "2020-0225-102455_011112_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "011112"}, "frames": ["2020-0225-102455_011112_movie_t-3.jpg", "2020-0225-102455_011112_movie_t-2.jpg", "2020-0225-102455_011112_movie_t-1.jpg", "2020-0225-102455_011112_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the truck.", "environment_perception": "An urban arterial with two lanes in the ego direction runs past mid-rise buildings; the pavement looks dry and smooth, with a low guardrail median on the right and a red-painted lane along the left. Traffic is light overall. A brown dump truck is stopped directly ahead in the ego lane for a red signal, holding position and constraining the ego vehicle's pace. Beyond the guardrail to the right, oncoming vehicles continue steadily along their side without interacting. No pedestrians, cyclists, or other hazards are visible.", "hazard_reasoning": "There is a brown truck stopping in the ego lane, in front of the ego car, because of the red traffic lights. The brown truck has stopped due to a red light, so the driver should stop behind it to maintain a safe distance."}
{"id": "train_01113", "split": "train", "clip_key": "titan_clip_891_000246_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_891_000246_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_891_000246_movie_t-3_augB1.jpg", "titan_clip_891_000246_movie_t-2_augB1.jpg", "titan_clip_891_000246_movie_t-1_augB1.jpg", "titan_clip_891_000246_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane and no median shows worn but serviceable pavement, parked cars lining the left curb, and slow-moving traffic ahead. A white car in the ego lane proceeds slowly behind other vehicles, setting the pace. Farther ahead, a man in a gray T-shirt and black pants crosses the street from right to left in front of the queued cars, entering the ego vehicle's path. At the left curb close to the camera, a person stands beside a parked silver minivan with its tailgate open, occupying part of the lane and further tightening the corridor. The right edge is bordered by a low wall and white railings along a sidewalk.", "hazard_reasoning": "There is a tall man, wearing a gray t-shirt and black pants, crossing the street, from the right side to the left side. The driver should slow down because the pedestrian is crossing directly ahead and may enter the vehicle's path."}
{"id": "train_01114", "split": "train", "clip_key": "titan_clip_301_000438_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_301_000438_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_301_000438_movie_t-3_augB1.jpg", "titan_clip_301_000438_movie_t-2_augB1.jpg", "titan_clip_301_000438_movie_t-1_augB1.jpg", "titan_clip_301_000438_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way side street with smooth pavement approaches an unsignalized cross street; there is no median, and traffic is light but the left edge is occupied by a work zone that narrows the lane. Ahead slightly left, a man wearing black overalls and an orange reflective jacket stands in the roadway as a construction flagger, signaling and controlling traffic, which constrains the ego vehicle's progress. On the cross street directly ahead, a teal box truck rolls slowly from left to right across the intersection, yielding to the flagger and briefly blocking the ego path. At the left curb before the junction, two more workers stand beside a yellow service truck behind a striped barrier, close to the travel lane and reducing clearance. A silver minivan is parked along the right curb near the corner and remains stationary.", "hazard_reasoning": "There is a man, wearing a black overall and orange reflector jacket, standing on the left side of the road, because of construction work on the left. This worker partially obstructs the lane and requires the driver to manoeuvre carefully to avoid collision."}
{"id": "train_01115", "split": "train", "clip_key": "titan_clip_179_000102_movie", "source": {"subset": "titan", "scenario": "clip_179", "frame": "000102"}, "frames": ["titan_clip_179_000102_movie_t-3.jpg", "titan_clip_179_000102_movie_t-2.jpg", "titan_clip_179_000102_movie_t-1.jpg", "titan_clip_179_000102_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be cautious of pedestrian ahead", "environment_perception": "A narrow urban street with a single marked lane runs between tall buildings, the pavement is smooth, and there is no median; traffic is light with no moving vehicles nearby. Ahead, a pedestrian in a black-and-white shirt stands in the middle of the lane, largely stationary and directly in the ego path, constraining the pace. Farther ahead on the right, another person walks along the sidewalk near building entrances, remaining outside the lane. Parked cars line bays on both sides, narrowing the corridor but not intruding into the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black-and-white shirt and standing in the middle of the road. The driver should be cautious because the pedestrian in the road could step into the vehicle's path."}
{"id": "train_01116", "split": "train", "clip_key": "2020-0210-101957_047113_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "047113"}, "frames": ["2020-0210-101957_047113_movie_t-3.jpg", "2020-0210-101957_047113_movie_t-2.jpg", "2020-0210-101957_047113_movie_t-1.jpg", "2020-0210-101957_047113_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban four-lane arterial with two lanes per direction, divided by double solid white lines, runs straight on dry pavement as traffic is heavy and compresses ahead. A black minivan directly ahead in the ego lane slows because of congestion and sets the pace for the ego car. To the left, a red minivan in the curbside same-direction lane also decelerates alongside, limiting space to merge. On the opposite side, a large silver truck approaches in the nearest oncoming lane by the center lines and continues steadily.", "hazard_reasoning": "There is a black minivan slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The minivan's reduced speed signals upstream congestion, so you should slow down to maintain a safe distance and prevent a collision."}
{"id": "train_01117", "split": "train", "clip_key": "2020-0214-102601_029834_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "029834"}, "frames": ["2020-0214-102601_029834_movie_t-3.jpg", "2020-0214-102601_029834_movie_t-2.jpg", "2020-0214-102601_029834_movie_t-1.jpg", "2020-0214-102601_029834_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to maintain safe distance.", "environment_perception": "An urban three-lane arterial with no median shows dry, well-marked pavement and heavy, stop-and-go traffic. Directly ahead in the ego lane, a white sedan is stopped because congestion blocks the lane. Farther ahead in the same lane, a white box truck also stands still, extending the queue and constraining the ego vehicle's pace. In the adjacent right lane, a dark van creeps forward parallel to the queue, remaining close alongside. At the left curb, a small white van waits near the lane edge and may merge into the traffic stream.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a collision with the halted vehicle."}
{"id": "train_01118", "split": "train", "clip_key": "2020-0204-103442_038488_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "038488"}, "frames": ["2020-0204-103442_038488_movie_t-3.jpg", "2020-0204-103442_038488_movie_t-2.jpg", "2020-0204-103442_038488_movie_t-1.jpg", "2020-0204-103442_038488_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three lanes in the ego's direction runs under an elevated expressway, divided from the opposite carriageway on the right by a guardrail; the pavement looks smooth and traffic is light with steady flow. A white box truck ahead in the ego lane cruises at a modest speed, effectively setting the pace. A small car farther ahead in the adjacent right lane maintains speed within its lane and remains clear of the ego path. Oncoming cars on the separated right-side carriageway pass by behind the barrier without interaction.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01119", "split": "train", "clip_key": "2020-0203-114632_057945_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "057945"}, "frames": ["2020-0203-114632_057945_movie_t-3.jpg", "2020-0203-114632_057945_movie_t-2.jpg", "2020-0203-114632_057945_movie_t-1.jpg", "2020-0203-114632_057945_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield now", "environment_perception": "An urban multi-lane arterial with a planted median separating opposing traffic on the left has dry, well-marked pavement and moderate flow toward an intersection. A green bus on the left side of the intersection turns into the ego lane and begins to merge ahead, potentially entering the ego vehicle's path. A white minivan in the right adjacent lane travels straight at a similar speed, staying alongside and limiting a rightward lane change. A gray van in the far-right lane proceeds straight and slowly passes. A 50 km/h speed-limit sign stands on the left, and overhead blue signs display straight-ahead arrows.", "hazard_reasoning": "There is a green bus turning, on the left side of the intersection, into the ego lane. The green bus is making a left turn into your lane and may cut you off, so you should yield to avoid a collision."}
{"id": "train_01120", "split": "train", "clip_key": "titan_clip_1279_000198_movie", "source": {"subset": "titan", "scenario": "clip_1279", "frame": "000198"}, "frames": ["titan_clip_1279_000198_movie_t-3.jpg", "titan_clip_1279_000198_movie_t-2.jpg", "titan_clip_1279_000198_movie_t-1.jpg", "titan_clip_1279_000198_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with a single mixed-traffic lane and no median runs between mid-rise buildings; the pavement is smooth and vehicle traffic is light while pedestrian activity is steady. On the right side, a man in a blue shirt and gray pants walks away from the ego car along the edge and could drift into the lane. Straight ahead in the ego lane, two pedestrians walk away down the center, constraining the ego vehicle's pace. Farther ahead to the left, another pedestrian steps out from the storefront area toward the roadway and may enter the path. A shop signboard and stacks of boxes encroach from the left, partially narrowing the lane.", "hazard_reasoning": "There is a man wearing a blue shirt and gray pants, and walking away from the ego car, on the right side of the road. Since the pedestrian is near the road edge and visibility is limited by the parked truck, the driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_01121", "split": "train", "clip_key": "2020-0206-101736_088154_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "088154"}, "frames": ["2020-0206-101736_088154_movie_t-3.jpg", "2020-0206-101736_088154_movie_t-2.jpg", "2020-0206-101736_088154_movie_t-1.jpg", "2020-0206-101736_088154_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes and a raised median approaches an intersection; the pavement is dry and traffic is moderate. The overhead signal shows green as the ego car continues. A white truck ahead in the ego lane slows, constraining the ego vehicle's pace. A white van emerges from the left side of the intersection into the same carriageway ahead, accelerating after the turn and may move toward the ego lane. Oncoming traffic flows on the far side of the median without affecting the ego path. A dark minivan is stopped at the right curb near the intersection.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The slowing truck ahead may require the driver to reduce speed promptly to maintain a safe following distance and avoid a collision."}
{"id": "train_01122", "split": "train", "clip_key": "titan_clip_104_000270_movie", "source": {"subset": "titan", "scenario": "clip_104", "frame": "000270"}, "frames": ["titan_clip_104_000270_movie_t-3.jpg", "titan_clip_104_000270_movie_t-2.jpg", "titan_clip_104_000270_movie_t-1.jpg", "titan_clip_104_000270_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around helmeted pedestrian", "environment_perception": "A narrow urban street is channelized into a single forward lane by a construction site along the left behind white hoarding; the pavement looks smooth and traffic is light. Orange cones and tape narrow the roadway near midblock. A helmeted pedestrian worker stands in the middle of the road ahead among the cones because of the construction on the left, guiding passage and constraining the ego vehicle's pace. A silver van is stopped at the right curb just ahead, further tightening the usable lane. Farther ahead on the left, a small work truck waits near the site entrance at low speed.", "hazard_reasoning": "There is a pedestrian wearing a helmet, standing in the middle of the road, because of construction work on the left. The driver should carefully manoeuvre around the pedestrian to avoid a collision due to the narrowed roadway."}
{"id": "train_01123", "split": "train", "clip_key": "titan_clip_1033_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1033_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1033_000198_movie_t-3_augB1.jpg", "titan_clip_1033_000198_movie_t-2_augB1.jpg", "titan_clip_1033_000198_movie_t-1_augB1.jpg", "titan_clip_1033_000198_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian carefully", "environment_perception": "A narrow urban two-way residential street with a single lane each direction has no median; the pavement is wet and patched, and traffic is light with no moving vehicles or oncoming traffic visible. Ahead in the ego lane, a construction worker wearing a helmet, gray shirt, and gray pants stands spraying water from a hose toward the right because of construction work on the left, occupying part of the lane and constraining the approach. Farther ahead near the centerline, another worker walks along the roadway, further narrowing the path. A small flatbed truck is stopped on the right shoulder with equipment, and hoses, cables, a green bucket, and scattered materials cross or border the lane beside an excavation area and a portable toilet on the left.", "hazard_reasoning": "There is a pedestrian wearing a helmet, a gray shirt, and gray pants, standing sprinkling water from a hose, facing the right side because of construction work on the left. The driver should be cautious and manoeuvre carefully because the pedestrian is on the roadway and may step into the vehicular lane unexpectedly."}
{"id": "train_01124", "split": "train", "clip_key": "2020-0214-145407_008276_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "008276"}, "frames": ["2020-0214-145407_008276_movie_t-3.jpg", "2020-0214-145407_008276_movie_t-2.jpg", "2020-0214-145407_008276_movie_t-1.jpg", "2020-0214-145407_008276_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under elevated expressways, with three same-direction lanes and smooth dry pavement; traffic is heavy and moves in stop-and-go queues toward a signalized intersection ahead. A white van directly ahead in the ego lane slows to a crawl because of congestion ahead, setting the ego vehicle's pace. To the left, a silver hatchback slightly ahead in the curb lane inches forward beside the ego lane, remaining parallel as space opens. In the right lane, another white minivan ahead also brakes in the queue, keeping the adjacent lane tightly packed. A traffic signal and overhead guide signs are visible at the intersection under the flyover, and barriers line the left edge of the roadway.", "hazard_reasoning": "There is a white van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision under these conditions."}
{"id": "train_01125", "split": "train", "clip_key": "2020-0213-143552_004407_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "004407"}, "frames": ["2020-0213-143552_004407_movie_t-3.jpg", "2020-0213-143552_004407_movie_t-2.jpg", "2020-0213-143552_004407_movie_t-1.jpg", "2020-0213-143552_004407_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban arterial with two lanes in each direction and only a painted center line is shown, the pavement dry and smooth and traffic light to moderate. On the left curb just ahead, a black box truck is parked with its rear open for unloading, narrowing the usable space in the ego lane. Ahead in the adjacent right lane, a white van continues in the same direction at a steady pace and is the nearest moving vehicle to pass the obstruction. Oncoming cars travel in the right-side lanes toward the camera at intervals, remaining separated by the center line and constraining any wide maneuver around the parked truck. A marked bicycle lane runs along the left edge.", "hazard_reasoning": "There is a black truck parked on the left side of the road because it is being unloaded. The parked truck reduces lane width and may obstruct traffic flow, so drivers should manoeuvre carefully around it."}
{"id": "train_01126", "split": "train", "clip_key": "2020-0131-135401_033713_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "033713"}, "frames": ["2020-0131-135401_033713_movie_t-3.jpg", "2020-0131-135401_033713_movie_t-2.jpg", "2020-0131-135401_033713_movie_t-1.jpg", "2020-0131-135401_033713_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the black van", "environment_perception": "An urban two-lane road with a solid yellow centerline and smooth pavement runs slightly uphill, and traffic is light. A small white car ahead in the ego lane proceeds straight over the zebra crossing, gently setting the pace. An oncoming white van travels toward us in the opposite lane, keeping to its line as it nears the crossing. A black van is parked on the left side of the road by the curb just before the crosswalk, leaving the travel lane clear. No pedestrians are visible, and a pedestrian overpass and some parked bicycles line the right-side sidewalk.", "hazard_reasoning": "There is a black van parked on the left side of the road. A parked vehicle on the left may narrow the drivable area and obscure potential pedestrian movements; the driver should carefully maneuver around it to avoid collision."}
{"id": "train_01127", "split": "train", "clip_key": "2020-0217-144444_008275_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "008275"}, "frames": ["2020-0217-144444_008275_movie_t-3.jpg", "2020-0217-144444_008275_movie_t-2.jpg", "2020-0217-144444_008275_movie_t-1.jpg", "2020-0217-144444_008275_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked truck.", "environment_perception": "An urban multi-lane arterial with opposing directions and no physical median stretches ahead; the pavement is dry and smooth, and traffic is light and flowing. On the left side near the ego lane, a white delivery truck is parked with its rear open, and a worker handles a blue cart beside it, narrowing the left margin of the ego lane. Ahead in the same lane, a small light-blue truck proceeds slowly, constraining the ego vehicle's pace. In the adjacent lane to the right, a dark sedan continues straight at a steady speed without affecting the ego path. Several cars are parked along the right curb but remain outside the travel lanes.", "hazard_reasoning": "There is a white truck parked on the left side of the road. The parked truck partially obstructs the left-side view, so the driver should be aware of it to anticipate any hidden vehicles or pedestrians."}
{"id": "train_01128", "split": "train", "clip_key": "titan_clip_1156_000540_movie", "source": {"subset": "titan", "scenario": "clip_1156", "frame": "000540"}, "frames": ["titan_clip_1156_000540_movie_t-3.jpg", "titan_clip_1156_000540_movie_t-2.jpg", "titan_clip_1156_000540_movie_t-1.jpg", "titan_clip_1156_000540_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of turning vehicle", "environment_perception": "An urban two-way street with multiple lanes and no physical median lies ahead, the pavement smooth and traffic light as the ego vehicle proceeds in the left lane toward an intersection. A small three-wheeled delivery scooter travels ahead in the ego lane at low speed, directly influencing the ego vehicle's pace. In the middle of the intersection farther ahead, a gray hatchback turns left away from the ego car and clears the path. On the right side of the roadway, oncoming cars pass steadily in their lanes with no interaction. A worker in high-visibility clothing stands on the right sidewalk beside orange cones marking a minor curbside work area.", "hazard_reasoning": "There is a gray hatchback turning left in the middle of the intersection, away from the ego car. Because it is turning across the ego-vehicle's path, the driver should be aware of its movement to prevent a collision."}
{"id": "train_01129", "split": "train", "clip_key": "titan_clip_204_000090_movie", "source": {"subset": "titan", "scenario": "clip_204", "frame": "000090"}, "frames": ["titan_clip_204_000090_movie_t-3.jpg", "titan_clip_204_000090_movie_t-2.jpg", "titan_clip_204_000090_movie_t-1.jpg", "titan_clip_204_000090_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban side street meets a narrow two-way road with no median, good pavement, and light traffic; the ego vehicle pauses at a zebra crossing before proceeding. Far ahead in the same direction, a white box truck continues away along the left lane, not constraining the ego. On the near left corner, a pedestrian lingers by the curb and another walks along the building, both remaining on the sidewalk and only briefly approaching the crosswalk. On the right sidewalk just past the corner, a person walks away beside the facade, staying clear of the roadway. A roadside pedestrian-crossing sign is visible, and a large 30 speed marking is painted on the road.", "hazard_reasoning": "No immediate hazards are present; maintain normal driving and stay alert for possible changes."}
{"id": "train_01130", "split": "train", "clip_key": "2020-0127-132751_030613_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "030613"}, "frames": ["2020-0127-132751_030613_movie_t-3.jpg", "2020-0127-132751_030613_movie_t-2.jpg", "2020-0127-132751_030613_movie_t-1.jpg", "2020-0127-132751_030613_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with two lanes in each direction runs straight ahead, separated from opposing traffic by a raised fence-like median; the pavement looks smooth and traffic is light to moderate. A white box truck drives ahead in the ego lane, continuing straight through a green signal and setting the ego car's pace. To the left, another white truck is close alongside in the curb lane near the camera, moving slowly while staying out of the ego lane. Across the median, a few oncoming cars flow steadily in their opposite lanes. Overhead signals remain green for the ego direction, and no obstacles or work zones are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01131", "split": "train", "clip_key": "titan_clip_409_000492_movie", "source": {"subset": "titan", "scenario": "clip_409", "frame": "000492"}, "frames": ["titan_clip_409_000492_movie_t-3.jpg", "titan_clip_409_000492_movie_t-2.jpg", "titan_clip_409_000492_movie_t-1.jpg", "titan_clip_409_000492_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban one-lane street with block paving runs between shops, and traffic is light but slowed by curbside deliveries. Immediately ahead on the right, a silver delivery truck is parked because it is being unloaded, its liftgate down as a worker moves boxes on a cart, partially intruding into the ego lane and limiting progress. Farther ahead on the same side, another truck waits by the curb, further narrowing the passage. A no-parking sign is posted on the left. Bollards and storefront entrances line the left edge, and no other moving vehicles or pedestrians are evident.", "hazard_reasoning": "There is a silver truck parked on the right side of the road, because it is being unloaded. The parked truck with its open rear door and unloading boxes partially blocks the lane, reducing available space and requiring careful maneuvering.\\n"}
{"id": "train_01132", "split": "train", "clip_key": "titan_clip_332_000354_movie", "source": {"subset": "titan", "scenario": "clip_332", "frame": "000354"}, "frames": ["titan_clip_332_000354_movie_t-3.jpg", "titan_clip_332_000354_movie_t-2.jpg", "titan_clip_332_000354_movie_t-1.jpg", "titan_clip_332_000354_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian crossing", "environment_perception": "A dense urban commercial alley with a single narrow shared lane and no median runs between shops; the brick-paved surface has manholes, and vehicular traffic is light while foot traffic is heavy. The ego-vehicle moves slowly along the center as pedestrians occupy the roadway. Ahead in the lane, a small group walks away toward the next block, constraining speed as they remain in the path. On the right edge near the camera, two pedestrians approach along the curb and pass close to the lane. At the next intersection, a pedestrian wearing black walks from the left side to the right, potentially crossing the vehicle's path. A one-way sign and a prohibition sign stand on a pole to the left.", "hazard_reasoning": "There is a pedestrian wearing black clothing, walking to the right side of the intersection, from the left side. The pedestrian is crossing at the intersection, so the driver should yield to avoid a collision."}
{"id": "train_01133", "split": "train", "clip_key": "2020-0214-102601_078420_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "078420"}, "frames": ["2020-0214-102601_078420_movie_t-3.jpg", "2020-0214-102601_078420_movie_t-2.jpg", "2020-0214-102601_078420_movie_t-1.jpg", "2020-0214-102601_078420_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "On a suburban two-way road with a single lane each way and smooth pavement, traffic is light as the car proceeds past houses and low walls. A gray mid-SUV ahead in the ego lane begins shifting right toward the oncoming side to pass, lane changing to the right because of a parked vehicle ahead. A small delivery truck is stopped partly in the ego lane with its rear open, blocking the path and causing the slowdown. No oncoming vehicles are visible in the opposing lane at this moment.", "hazard_reasoning": "A gray mid-suv, in the ego lane, lane changing to the right lane, because of the parked vehicle. Because the mid-SUV is merging due to a parked vehicle on the right, you need to slow down to let it complete its lane change safely."}
{"id": "train_01134", "split": "train", "clip_key": "2020-0207-101955_067848_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "067848"}, "frames": ["2020-0207-101955_067848_movie_t-3.jpg", "2020-0207-101955_067848_movie_t-2.jpg", "2020-0207-101955_067848_movie_t-1.jpg", "2020-0207-101955_067848_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban road with a separated side lane runs straight in clear weather; a metal guardrail divides this lane from a faster carriageway, and the pavement looks smooth. Traffic is light overall, but the ego lane is blocked. A white hatchback directly ahead is stopped in the ego lane because a small truck and a larger blue construction truck are stopped farther ahead in the same lane, halting movement. A blue hatchback ahead left waits in the adjacent lane beside the queue, constraining space to pass. Construction materials and a narrow striped buffer line the right edge next to the guardrail, adding a roadside obstacle.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of a truck stopped ahead. The driver should stop promptly to maintain a safe following distance and avoid a collision."}
{"id": "train_01135", "split": "train", "clip_key": "titan_clip_613_000210_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_613_000210_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_613_000210_movie_t-3_augB1.jpg", "titan_clip_613_000210_movie_t-2_augB1.jpg", "titan_clip_613_000210_movie_t-1_augB1.jpg", "titan_clip_613_000210_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban one-lane side street with a paver surface runs between buildings, with no divider or sidewalks, and traffic is light. A zebra crossing and intersecting street are visible ahead. Ahead in the center of the lane, a pedestrian in a cap, red T-shirt, and blue shorts walks away from the ego car while talking with a nearby group because there is no sidewalk, narrowing the path. The rest of the group lingers at the left edge of the lane and occasionally steps into it, potentially constraining the vehicle's pace. Farther ahead at the crosswalk, a person crosses from right to left and may enter the vehicle's line of travel. A small van stands near the intersection on the left, reducing clearance.", "hazard_reasoning": "There is a pedestrian talking in a group, wearing a cap, wearing a red t-shirt, and wearing blue shorts, walking in the middle of the road, away from the ego car because there is no sidewalk. Because the pedestrian occupies the roadway with no safe walkway, the driver must carefully manoeuvre around them to avoid collision."}
{"id": "train_01136", "split": "train", "clip_key": "2020-0204-150838_019748_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "019748"}, "frames": ["2020-0204-150838_019748_movie_t-3.jpg", "2020-0204-150838_019748_movie_t-2.jpg", "2020-0204-150838_019748_movie_t-1.jpg", "2020-0204-150838_019748_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane boulevard with three lanes in the same direction runs between a park on the left and a landscaped median on the right; the pavement is smooth and traffic flows at a moderate, steady pace. A white van directly ahead in the ego lane drives steadily and sets the ego car's pace. Another white van travels slightly ahead in the left lane, maintaining its lane and distance. A third white van proceeds in the right lane farther ahead without signaling or changing speed, remaining outside the ego path. A Route 301 sign is visible on the right, with no signals or unusual controls evident.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01137", "split": "train", "clip_key": "2020-0214-145407_037560_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "037560"}, "frames": ["2020-0214-145407_037560_movie_t-3.jpg", "2020-0214-145407_037560_movie_t-2.jpg", "2020-0214-145407_037560_movie_t-1.jpg", "2020-0214-145407_037560_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane roadway with same-direction traffic runs between concrete barriers beside an elevated structure; the pavement appears smooth and traffic is light. A white box truck ahead in the ego lane drives away from the camera at a steady pace, effectively setting the ego vehicle's speed. A black minivan in the right lane travels slightly ahead and parallel, maintaining its lane without merging into the ego path. A fenced construction site with cranes lines the left side, narrowing the corridor.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The white truck could reduce speed suddenly or obscure the view ahead, so the driver should maintain a safe following distance under this situation."}
{"id": "train_01138", "split": "train", "clip_key": "2020-0228-102841_070318_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "070318"}, "frames": ["2020-0228-102841_070318_movie_t-3.jpg", "2020-0228-102841_070318_movie_t-2.jpg", "2020-0228-102841_070318_movie_t-1.jpg", "2020-0228-102841_070318_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the traffic cones", "environment_perception": "A narrow undivided urban street runs beneath elevated structures, the smooth pavement bending slightly right toward a construction gate, and traffic is light with no moving vehicles visible. Ahead of the ego vehicle, a group of orange traffic cones lines the left edge and partially blocks the lane, tapering the path toward the right near the work zone. Several pedestrians are ahead near the gate on the left shoulder, walking or waiting close to the roadway and potentially entering the travel path. Another person stands by the crosswalk at the far left curb without stepping out. Blue pedestrian signage, barriers, and scaffolding mark the construction area, while hedges and railings hem in the roadway and no other obstacles appear.", "hazard_reasoning": "There is a group of traffic cones in front of the ego car. The cones indicate nearby roadworks and partially block the lane, so the driver should manoeuvre carefully around them to maintain safe passage."}
{"id": "train_01139", "split": "train", "clip_key": "2020-0227-153144_042859_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "042859"}, "frames": ["2020-0227-153144_042859_movie_t-3.jpg", "2020-0227-153144_042859_movie_t-2.jpg", "2020-0227-153144_042859_movie_t-1.jpg", "2020-0227-153144_042859_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road with smooth asphalt and a painted median runs between mid-rise buildings; traffic is moderate, with steady oncoming flow to the right and slower movement in the ego's direction. A white van directly ahead in the ego lane is slowing due to congestion ahead and it constrains the ego vehicle's pace. On the left near the curb, another small white van sits stopped just ahead of the ego vehicle and may merge back into the lane. In the right-side oncoming lanes, a large truck proceeds past, separated by the median markings. A blue straight-ahead regulatory sign is visible on the left sidewalk, and no obstacles or work zones appear in the travel path.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to reduced traffic speed."}
{"id": "train_01140", "split": "train", "clip_key": "titan_clip_977_000354_movie", "source": {"subset": "titan", "scenario": "clip_977", "frame": "000354"}, "frames": ["titan_clip_977_000354_movie_t-3.jpg", "titan_clip_977_000354_movie_t-2.jpg", "titan_clip_977_000354_movie_t-1.jpg", "titan_clip_977_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "A quiet urban residential intersection with narrow two-way streets and smooth pavement comes into view, and traffic is light. The ego vehicle approaches from a wider street toward a side street with no divider, where convex safety mirrors are mounted on both corners. On the left edge of the crosswalk, a helmeted worker stands next to the intersection and directs traffic, engaging the lane ahead of the ego vehicle. Ahead in the same direction along the narrow street, a cyclist rides away on the left side. Farther ahead on the right, a small white van is stopped at the curb near the corner, slightly narrowing the passage.", "hazard_reasoning": "There is a man wearing black pants, a blue shirt, and a blue helmet, standing next the intersection, because he is directing traffic. The driver should yield because the traffic controller may step into the roadway unexpectedly to manage traffic flow."}
{"id": "train_01141", "split": "train", "clip_key": "2020-0203-114632_004040_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "004040"}, "frames": ["2020-0203-114632_004040_movie_t-3.jpg", "2020-0203-114632_004040_movie_t-2.jpg", "2020-0203-114632_004040_movie_t-1.jpg", "2020-0203-114632_004040_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way road with one lane each way runs past shops and railings; the pavement is in good condition and traffic slows near a zebra crossing. A small flatbed truck is stopped ahead in the ego lane at the crosswalk, narrowing the path and setting the pace. A person ahead in the crosswalk walks from left to right beside the truck, briefly entering the ego lane and constraining passage. A white van approaches in the oncoming lane and continues straight past the crossing. A red traffic cone stands just in front of the ego car near the stop line, with additional cones around the truck. A blue straight-ahead regulatory sign is visible on the right.", "hazard_reasoning": "There is a red traffic cone in front of the ego car. The cone indicates a work zone or obstruction ahead, so the driver should stop to avoid collision or damage under this situation."}
{"id": "train_01142", "split": "train", "clip_key": "titan_clip_1130_000216_movie", "source": {"subset": "titan", "scenario": "clip_1130", "frame": "000216"}, "frames": ["titan_clip_1130_000216_movie_t-3.jpg", "titan_clip_1130_000216_movie_t-2.jpg", "titan_clip_1130_000216_movie_t-1.jpg", "titan_clip_1130_000216_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "The scene shows a narrow urban residential road with a single undivided lane, buildings on the left and a tree-lined fence on the right. The pavement is smooth and traffic moves very slowly as the lane is shared with walkers and a bicycle. A pedestrian in a white T-shirt walks ahead near the right side away from the ego car, edging right because another pedestrian occupies the left side, and he remains in the ego path. A second pedestrian just ahead to the left walks away along the building edge. An oncoming cyclist approaches along the right edge by the bushes, further constricting space.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt and walking on the right side of the road, away from the ego-car, because of another pedestrian. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_01143", "split": "train", "clip_key": "titan_clip_378_000516_movie", "source": {"subset": "titan", "scenario": "clip_378", "frame": "000516"}, "frames": ["titan_clip_378_000516_movie_t-3.jpg", "titan_clip_378_000516_movie_t-2.jpg", "titan_clip_378_000516_movie_t-1.jpg", "titan_clip_378_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street with a single narrow shared lane is paved with interlocking bricks, has no marked sidewalks or dividers, and shows light vehicle flow but moderate pedestrian and bicycle activity. On the right edge near the camera, an oncoming cyclist rides slowly toward the ego vehicle along the storefronts, opposing its path. On the left foreground, a man steps from a doorway and proceeds along the roadway within the lane. Farther ahead, several pedestrians occupy the center and right side, including one in blue overalls walking toward the vehicle along the edge where there is no sidewalk, and they collectively constrain the pace. Shop displays, boards, and parked bicycles protrude into the carriageway, further narrowing the usable space.", "hazard_reasoning": "There is a pedestrian wearing blue overalls and walking toward the ego car, because there is no sidewalk, on the right side of the road. The driver should slow down to maintain a safe distance and avoid colliding with the pedestrian who may step further into the roadway."}
{"id": "train_01144", "split": "train", "clip_key": "2020-0210-101957_053788_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "053788"}, "frames": ["2020-0210-101957_053788_movie_t-3.jpg", "2020-0210-101957_053788_movie_t-2.jpg", "2020-0210-101957_053788_movie_t-1.jpg", "2020-0210-101957_053788_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement carries moderate same-direction flow, with the ego vehicle in a center lane; oncoming lanes are separated by double white lines and a low hedge. Ahead in the ego lane a black hatchback pulls away, accelerating as the distant signal shows green and momentarily setting the pace. To the left, a large white box truck in the adjacent lane rolls slowly beside the ego car, reducing lateral space. Farther left another work truck queues behind it with little movement. Overhead blue direction boards and the green traffic light are visible at the upcoming intersection.", "hazard_reasoning": "There is a black hatchback accelerating in front of the ego car, in the ego lane, because of a green traffic light. The signal has just turned green and vehicles ahead are starting to move, so the ego-vehicle should start moving promptly to maintain safe traffic flow and avoid sudden stops."}
{"id": "train_01145", "split": "train", "clip_key": "titan_clip_899_000456_movie", "source": {"subset": "titan", "scenario": "clip_899", "frame": "000456"}, "frames": ["titan_clip_899_000456_movie_t-3.jpg", "titan_clip_899_000456_movie_t-2.jpg", "titan_clip_899_000456_movie_t-1.jpg", "titan_clip_899_000456_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban shopping street with a marked zebra crossing spans the foreground; the single carriageway has smooth light pavement and no median, and vehicular flow is light. A blue no-parking sign stands on the left storefront line. Ahead, a woman in a brown skirt and black shoes carrying a blue-and-white bag crosses from right to left in the crosswalk directly in front of the ego-vehicle, occupying its lane. From the left, another pedestrian enters the crosswalk and proceeds toward the center, occupying space in the ego lane. On the near right, a wheelchair user rolls forward along the curb beside the crosswalk, remaining near the edge of the lane.", "hazard_reasoning": "There is a female pedestrian, wearing a brown skirt, black shoes and carrying a blue and white bag, crossing the street from right to left in the front of the ego-car, in a marked crosswalk. The driver should stop because the pedestrian is entering directly in front of the vehicle and must be given right of way to avoid collision."}
{"id": "train_01146", "split": "train", "clip_key": "titan_clip_101_000024_movie", "source": {"subset": "titan", "scenario": "clip_101", "frame": "000024"}, "frames": ["titan_clip_101_000024_movie_t-3.jpg", "titan_clip_101_000024_movie_t-2.jpg", "titan_clip_101_000024_movie_t-1.jpg", "titan_clip_101_000024_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van", "environment_perception": "A narrow urban street with brick paving, no median, and light traffic unfolds ahead; the surface is dry and even. The ego vehicle proceeds along the left side as is typical in Japan. On the left curb near the ego vehicle, a silver van is parked, leaving reduced clearance for passing. Far ahead in the same direction, a small box truck continues steadily down the center of the lane, subtly setting the pace. Several pedestrians walk along the sidewalks on both sides, with a couple on the right standing close to the curb near storefronts. Orange cones and parked bicycles line the left edge, further narrowing the usable roadway.", "hazard_reasoning": "There is a silver van parked on the left side of the road. Manoeuvre around the parked van to avoid collision due to reduced roadway width."}
{"id": "train_01147", "split": "train", "clip_key": "titan_clip_627_000396_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_627_000396_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_627_000396_movie_t-3_augB1.jpg", "titan_clip_627_000396_movie_t-2_augB1.jpg", "titan_clip_627_000396_movie_t-1_augB1.jpg", "titan_clip_627_000396_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "An urban commercial side street in Japan appears as a narrow two-way road without a median and with smooth pavement; vehicle traffic is light and no cars are immediately ahead or oncoming. A pair of pedestrians talking cross the middle of the intersection toward the ego vehicle, entering the ego lane and dictating a slow approach. On the right edge of the lane, a man with a backpack walks toward the camera along the roadway, which may bring him into the path. On the left near the curb, a woman with an umbrella steps along the roadway toward the center. Orange barricades ahead on the right mark a small work area.", "hazard_reasoning": "There are two pedestrians talking in a group, crossing the street in the middle of the intersection, moving toward the ego car. The driver should yield to avoid colliding with them at the intersection."}
{"id": "train_01148", "split": "train", "clip_key": "2020-0220-102630_070841_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "070841"}, "frames": ["2020-0220-102630_070841_movie_t-3.jpg", "2020-0220-102630_070841_movie_t-2.jpg", "2020-0220-102630_070841_movie_t-1.jpg", "2020-0220-102630_070841_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with stopped van", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and no visible median shows smooth pavement and heavy, mostly stopped traffic. A white van directly ahead in the ego lane is stopped because congestion blocks the way, controlling the ego car's pace. To the right front, a black MPV in the adjacent lane waits in the queue at a standstill, closely parallel to the ego car and limiting a rightward lane change. On the left, a small silver van alongside creeps forward in its lane and may slip ahead into a gap.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a collision with the stationary van due to congestion."}
{"id": "train_01149", "split": "train", "clip_key": "2020-0228-102841_092982_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "092982"}, "frames": ["2020-0228-102841_092982_movie_t-3.jpg", "2020-0228-102841_092982_movie_t-2.jpg", "2020-0228-102841_092982_movie_t-1.jpg", "2020-0228-102841_092982_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with a single narrow lane per direction runs between close-set buildings, with a left-side guardrail and smooth pavement; traffic is light and slow. A white sedan directly ahead in the ego lane accelerates from a stop and pulls away, setting the ego car's pace. Farther ahead, a white van in the same lane proceeds slowly through the corridor, further limiting speed. The oncoming lane appears clear. A parked motorcycle and other curbside items on the right narrow the usable space.", "hazard_reasoning": "There is a white sedan accelerating from a stop, in front of the ego car, in the ego lane, because of a green traffic light ahead. You should start moving to keep pace with traffic and maintain a safe following distance."}
{"id": "train_01150", "split": "train", "clip_key": "titan_clip_997_000306_movie", "source": {"subset": "titan", "scenario": "clip_997", "frame": "000306"}, "frames": ["titan_clip_997_000306_movie_t-3.jpg", "titan_clip_997_000306_movie_t-2.jpg", "titan_clip_997_000306_movie_t-1.jpg", "titan_clip_997_000306_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the parked van", "environment_perception": "An urban two-way street with a narrow lane each direction passes under a railway overpass; the pavement looks smooth and traffic is light. A silver van is parked along the left curb near the underpass in a designated parking spot, slightly narrowing the usable lane. Ahead in the ego lane, a bicyclist rides away under the bridge and could constrain the vehicle's pace. Farther on, cars approach in the oncoming lane beyond the bridge. Several pedestrians walk on the right sidewalk, one near the curb but staying on the walkway. A 4.1 m height-restriction sign and matching overhead clearance bar are clearly visible at the bridge.", "hazard_reasoning": "There is a silver van parked on the left side of the road, because it is a parking spot. The parked van reduces the available lane width and may force the driver to adjust course, so caution is needed."}
{"id": "train_01151", "split": "train", "clip_key": "titan_clip_1242_000120_movie", "source": {"subset": "titan", "scenario": "clip_1242", "frame": "000120"}, "frames": ["titan_clip_1242_000120_movie_t-3.jpg", "titan_clip_1242_000120_movie_t-2.jpg", "titan_clip_1242_000120_movie_t-1.jpg", "titan_clip_1242_000120_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian ahead", "environment_perception": "A quiet urban street in Japan is shown, a narrow two-way road without a median and with smooth pavement that curves gently left ahead; traffic is light with no vehicles close by. A pedestrian in a white T-shirt walks toward the ego along the right edge beside the green shoulder, close to the travel lane and potentially entering it. Buildings tight to the roadway and the left bend create a partial blind curve that limits the view of oncoming traffic.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt walking on the right side of the road, towards the ego car. The driver should be aware of the pedestrian's movement as they may enter the lane unexpectedly, necessitating speed adjustment."}
{"id": "train_01152", "split": "train", "clip_key": "titan_clip_1113_000462_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1113_000462_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1113_000462_movie_t-3_augB1.jpg", "titan_clip_1113_000462_movie_t-2_augB1.jpg", "titan_clip_1113_000462_movie_t-1_augB1.jpg", "titan_clip_1113_000462_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban shopping street with a single narrow shared lane runs between dense storefronts; the brick pavement is in good condition and there is no divider, with motor traffic effectively absent and movement slow. A pedestrian in a gray T-shirt and black pants walks ahead in the middle of the lane away from the ego vehicle, occupying the path and setting the pace. On the left near the curb, several pedestrians stand and a child with an adult edge toward the lane, potentially stepping out. On the right by the storefronts, a person walks along the edge toward the ego vehicle but keeps to the side. Sandwich boards and shop displays line both curbs, slightly narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a gray t-shirt and black pants, walking in the middle of the road, away from the ego car. The pedestrian is occupying the travel lane and could be struck if the driver does not adjust, so the driver should manoeuvre carefully around the pedestrian."}
{"id": "train_01153", "split": "train", "clip_key": "titan_clip_873_000462_movie", "source": {"subset": "titan", "scenario": "clip_873", "frame": "000462"}, "frames": ["titan_clip_873_000462_movie_t-3.jpg", "titan_clip_873_000462_movie_t-2.jpg", "titan_clip_873_000462_movie_t-1.jpg", "titan_clip_873_000462_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban, narrow two-way street with a single lane each direction and no median appears, the pavement smooth and vehicle traffic light with no moving cars nearby. A pedestrian in a blue shirt and gray pants walks toward the ego in the left side of the lane because a van is parked along the left curb, so the person edges into the ego path. Several other pedestrians queue along the left curb near storefronts, standing close to the roadway and slightly narrowing the lane ahead of the van. Farther ahead, a group of pedestrians crosses the zebra crossing, likely to control the ego car's pace as it approaches. A silver van is parked on the left and partially protrudes into the lane, acting as an obstacle.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and gray pants, walking on the left side of the road, toward the ego car, because of a van parked on the left side of the road. The pedestrian may step into the vehicle's path to avoid the parked van, so the driver should adjust their path accordingly to avoid a collision."}
{"id": "train_01154", "split": "train", "clip_key": "2020-0204-150838_071738_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "071738"}, "frames": ["2020-0204-150838_071738_movie_t-3.jpg", "2020-0204-150838_071738_movie_t-2.jpg", "2020-0204-150838_071738_movie_t-1.jpg", "2020-0204-150838_071738_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway with three same-direction lanes runs beneath elevated ramps, bounded by a concrete barrier on the right; the pavement is dry with visible skid marks and traffic is moderate to heavy with intermittent slowing. A red container truck directly ahead in the ego lane slows because congestion builds up ahead, setting the ego-car's pace. In the adjacent left lane a white box truck runs slightly ahead and also eases off, restricting an immediate lane change. Farther left, several trucks queue at reduced speed in the same direction, reinforcing the slow flow. No salient signals are visible.", "hazard_reasoning": "There is a red truck slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The truck's reduced speed due to congestion requires the driver to slow down to maintain a safe following distance."}
{"id": "train_01155", "split": "train", "clip_key": "titan_clip_883_000252_movie", "source": {"subset": "titan", "scenario": "clip_883", "frame": "000252"}, "frames": ["titan_clip_883_000252_movie_t-3.jpg", "titan_clip_883_000252_movie_t-2.jpg", "titan_clip_883_000252_movie_t-1.jpg", "titan_clip_883_000252_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with no visible centerline or median, smooth pavement, and light traffic; the ego approaches a crosswalk at a small intersection while the roadway ahead shows no moving vehicles. On the right at the corner, two pedestrians wait and one steps from the curb toward the crosswalk ahead, potentially entering the ego lane. Farther ahead on the right sidewalk, another pedestrian walks past storefronts and remains clear of the roadway. A convex safety mirror stands on the right corner of the intersection. Parked vans line the left curb near the intersection, narrowing the approach but staying static.", "hazard_reasoning": "No immediate hazards detected; maintain normal driving as you proceed."}
{"id": "train_01156", "split": "train", "clip_key": "2020-0214-145407_030528_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "030528"}, "frames": ["2020-0214-145407_030528_movie_t-3.jpg", "2020-0214-145407_030528_movie_t-2.jpg", "2020-0214-145407_030528_movie_t-1.jpg", "2020-0214-145407_030528_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, the pavement dry and slightly worn, with heavy stop-and-go same-direction traffic. The ego vehicle proceeds in the middle lane. Directly ahead, a white sedan in the ego lane slows because vehicles in front queue toward a right turn, moving cautiously as the turn area approaches. To the left, a black taxi in the adjacent lane creeps forward alongside amid the congestion. Farther ahead, a small white van and several cars continue queuing, keeping speeds low. On the right shoulder beneath the viaduct, a truck and a parked car remain stationary near the guardrail, reducing available shoulder space.", "hazard_reasoning": "A white sedan slowing down in front of the ego car, in the ego lane, because of vehicles ahead of it, being cautious as they approach a right turn. The driver should slow down to maintain a safe distance and avoid a potential rear-end collision."}
{"id": "train_01157", "split": "train", "clip_key": "titan_clip_1322_000198_movie", "source": {"subset": "titan", "scenario": "clip_1322", "frame": "000198"}, "frames": ["titan_clip_1322_000198_movie_t-3.jpg", "titan_clip_1322_000198_movie_t-2.jpg", "titan_clip_1322_000198_movie_t-1.jpg", "titan_clip_1322_000198_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban backstreet with a single shared lane and no centerline runs between shops, the pavement is smooth, and traffic is light. A white forward arrow on the roadway indicates the travel direction. A cyclist rides ahead near the lane center, continuing away from the ego vehicle and effectively setting the pace on the confined lane. On the right side of the road, a pedestrian wearing a black T-shirt and pants walks toward the ego car along the curb and could step into the lane. A parked handcart and other street fixtures at the right curb slightly encroach into the roadway, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and pants, walking on the right side of the road, towards the ego car. The pedestrian's motion toward the vehicle path requires the driver to slow down to maintain a safe distance and avoid collision."}
{"id": "train_01158", "split": "train", "clip_key": "2020-0213-143552_055929_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "055929"}, "frames": ["2020-0213-143552_055929_movie_t-3.jpg", "2020-0213-143552_055929_movie_t-2.jpg", "2020-0213-143552_055929_movie_t-1.jpg", "2020-0213-143552_055929_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road passes under an elevated expressway, with one lane per direction divided by double yellow lines; the pavement is dry and traffic is moderate and slow near the signal. A large white box truck directly ahead in the ego lane slows and creeps toward the intersection, constraining the ego car because traffic is congested ahead. A small light truck ahead to the left by the curb moves slowly in the same direction and remains clear of the ego lane. On the right, an oncoming white van continues through its lane past the junction without encroaching. The overhead traffic signal facing the scene shows green.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Drivers should slow down to maintain a safe following distance for the congested traffic ahead."}
{"id": "train_01159", "split": "train", "clip_key": "2020-0205-152530_019419_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "019419"}, "frames": ["2020-0205-152530_019419_movie_t-3.jpg", "2020-0205-152530_019419_movie_t-2.jpg", "2020-0205-152530_019419_movie_t-1.jpg", "2020-0205-152530_019419_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the van", "environment_perception": "An urban arterial with two lanes in the ego direction runs straight on dry, well-kept pavement, with oncoming lanes to the right; traffic is light to moderate and steady. A gray van is close ahead in the ego lane, stopped and signalling to turn right. Two cars farther ahead in the ego lane travel toward a signalized intersection at a similar pace, loosely setting the ego vehicle's speed. Additional oncoming cars move along their right-side lanes beyond the centerline without interaction. An overhead traffic signal spans the road ahead, and strong sun glare from the right reduces contrast near the curb.", "hazard_reasoning": "There is a gray van stopped in the ego lane, signalling to turn right. Drivers should manoeuvre around it because it blocks the path and may cut across unexpectedly."}
{"id": "train_01160", "split": "train", "clip_key": "titan_clip_159_000024_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_159_000024_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_159_000024_movie_t-3_augB1.jpg", "titan_clip_159_000024_movie_t-2_augB1.jpg", "titan_clip_159_000024_movie_t-1_augB1.jpg", "titan_clip_159_000024_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way roadway and no median; pavement is smooth and motor traffic is light as the ego vehicle proceeds slowly along the left. A pedestrian with a backpack walks in the middle of the road ahead, moving away from the ego car and effectively constraining its pace. Farther ahead, another pedestrian at the left edge walks in the same direction near the travel path. On the right, a white kei truck is parked beside a construction wall, narrowing the lane and creating a pinch point the ego approaches. No oncoming vehicles or signals are visible.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking in the middle of the road, away from the ego car. The driver should slow down to ensure sufficient time to react and avoid hitting the pedestrian."}
{"id": "train_01161", "split": "train", "clip_key": "titan_clip_525_000156_movie", "source": {"subset": "titan", "scenario": "clip_525", "frame": "000156"}, "frames": ["titan_clip_525_000156_movie_t-3.jpg", "titan_clip_525_000156_movie_t-2.jpg", "titan_clip_525_000156_movie_t-1.jpg", "titan_clip_525_000156_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision", "environment_perception": "A narrow urban two-way street without a centerline runs between buildings, the asphalt looks smooth, and traffic is very light. A pedestrian wearing a white shirt and gray pants crosses ahead from the left to the right in front of the ego car, briefly occupying the lane. Farther ahead, a cyclist travels away near the middle of the road in the ego direction, sharing the lane and likely setting the pace. No signals or medians are visible, and nothing obstructs the roadway edges.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and gray pants crossing in front of the ego car, from the left to right side of the road. The driver should slow down to avoid a collision with the pedestrian crossing ahead."}
{"id": "train_01162", "split": "train", "clip_key": "titan_clip_1142_000222_movie", "source": {"subset": "titan", "scenario": "clip_1142", "frame": "000222"}, "frames": ["titan_clip_1142_000222_movie_t-3.jpg", "titan_clip_1142_000222_movie_t-2.jpg", "titan_clip_1142_000222_movie_t-1.jpg", "titan_clip_1142_000222_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrians.", "environment_perception": "A dense urban commercial street appears with a narrow two-way carriageway, no median, and slightly worn but intact pavement; traffic is light with no moving vehicles near the ego car. Ahead on the left edge, two pedestrians walk away along the roadway because there is no sidewalk; one wears a white T-shirt and black pants and tows a suitcase while the other wears a black shirt and orange skirt, and together they occupy part of the ego lane. On the right edge mid-block, another pedestrian moves toward the camera near storefronts and cones but stays at the curb. Bicycles and shop displays line the left margin, reducing the usable width of the lane.", "hazard_reasoning": "There are two pedestrians, one wearing a white t-shirt and black pants who is towing a suitcase, and the other is wearing a black shirt and orange skirt, walking on the left side of the road away from the ego car because there is no sidewalk. The driver needs to manoeuvre carefully around these pedestrians to prevent a potential collision as they share the roadway."}
{"id": "train_01163", "split": "train", "clip_key": "titan_clip_1077_000534_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1077_000534_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1077_000534_movie_t-3_augB1.jpg", "titan_clip_1077_000534_movie_t-2_augB1.jpg", "titan_clip_1077_000534_movie_t-1_augB1.jpg", "titan_clip_1077_000534_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way road with a single lane each way runs between buildings; smooth pavement and a left-side construction zone with cones narrow the carriageway, and traffic is light with no vehicles ahead or oncoming. Two pedestrians in gray T-shirts walk away from the camera along the right edge where there is no sidewalk, close to the ego lane and potentially entering it. Farther ahead near the center of the lane, another pedestrian walks in the same direction, briefly occupying the travel path and constraining pace. At the near right edge, a person stands by the curb next to an entrance, close to the lane.", "hazard_reasoning": "There are two pedestrians wearing a gray t-shirt, walking on the right side of the road, away from the ego car, because there are no sidewalks. The driver should slow down because pedestrians are walking on the road without a sidewalk, posing a collision risk."}
{"id": "train_01164", "split": "train", "clip_key": "titan_clip_920_000456_movie", "source": {"subset": "titan", "scenario": "clip_920", "frame": "000456"}, "frames": ["titan_clip_920_000456_movie_t-3.jpg", "titan_clip_920_000456_movie_t-2.jpg", "titan_clip_920_000456_movie_t-1.jpg", "titan_clip_920_000456_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban street without a median runs between close buildings; the pavement is dry and smooth, and traffic is light with no opposing vehicles visible. Ahead on the right, a large box truck is stopped at the curb and partly protrudes into the lane, tightening the passage for the ego vehicle. On the left verge, a man in a blue shirt and jeans walks toward the ego vehicle along the roadway edge and may enter the ego path. Next to the truck, a person stands at the rear close to the lane, further reducing clearance.", "hazard_reasoning": "There is a man wearing a blue shirt and jeans, and walking on the left side of the road, towards the ego car. The pedestrian may step into the vehicle's path unexpectedly from the blind spot, so the driver should remain alert."}
{"id": "train_01165", "split": "train", "clip_key": "2020-0207-101955_052777_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "052777"}, "frames": ["2020-0207-101955_052777_movie_t-3.jpg", "2020-0207-101955_052777_movie_t-2.jpg", "2020-0207-101955_052777_movie_t-1.jpg", "2020-0207-101955_052777_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with two lanes in each direction runs between mid-rise buildings; the asphalt is dry and smooth, and same-direction traffic is queued and stopped while oncoming traffic moves lightly. A black sedan directly ahead in the ego lane is stopped at a red signal, holding our lane. To its left, a white sedan in the adjacent lane is also stopped alongside. Farther ahead in that left lane, a white van waits in the line. Overhead blue guide signs indicate routes and show 400 m to destinations, and a landscaped median with a small solar device separates the opposing lanes.", "hazard_reasoning": "There is a black Sedan stopped in front of the ego car because of a red traffic light. The sedan's abrupt stop at the red light poses a collision risk, so the driver must stop immediately."}
{"id": "train_01166", "split": "train", "clip_key": "2020-0205-152530_050840_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-152530_050840_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-152530_050840_movie_t-3_augB1.jpg", "2020-0205-152530_050840_movie_t-2_augB1.jpg", "2020-0205-152530_050840_movie_t-1_augB1.jpg", "2020-0205-152530_050840_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with clean pavement carries moderate same-direction traffic, with clear lane markings and overhead direction signs visible ahead. A small white box truck directly ahead in the ego lane slows, constraining the ego car's pace. A large silver truck runs slightly ahead in the right-adjacent lane at similar speed, limiting any immediate move to the right. Two light vans ahead in the neighboring lanes continue straight and gradually pull away, posing no conflict. A bus stop with several pedestrians stands along the left sidewalk behind a railing. A roadside sign on the left indicates bus-priority times, and additional gantry signs span the roadway further ahead.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's reduced speed creates a risk of collision if the ego-vehicle does not decelerate in time, so the driver should slow down to maintain a safe following distance."}
{"id": "train_01167", "split": "train", "clip_key": "titan_clip_757_000516_movie", "source": {"subset": "titan", "scenario": "clip_757", "frame": "000516"}, "frames": ["titan_clip_757_000516_movie_t-3.jpg", "titan_clip_757_000516_movie_t-2.jpg", "titan_clip_757_000516_movie_t-1.jpg", "titan_clip_757_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban narrow one-lane alley runs between tall buildings with no divider and smooth pavement; traffic is light as the vehicle approaches an intersection at the far end. A man dressed in a white shirt and black pants, wearing a backpack, walks away from the ego vehicle along the left edge, staying near the wall and potentially edging into the lane. Another pedestrian on the near left walks toward the camera while looking at a phone, close to the carriageway and possibly drifting into the path. A small truck waits ahead at the mouth of the alley on the cross street, partly obscuring the exit. A large stop marking is painted on the roadway near the intersection.", "hazard_reasoning": "There is a man dressed in a white shirt and black pants, wearing a backpack and walking on the left side of the roadway from the ego-car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should reduce speed to maintain adequate reaction time."}
{"id": "train_01168", "split": "train", "clip_key": "2020-0203-114632_077303_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "077303"}, "frames": ["2020-0203-114632_077303_movie_t-3.jpg", "2020-0203-114632_077303_movie_t-2.jpg", "2020-0203-114632_077303_movie_t-1.jpg", "2020-0203-114632_077303_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road with a central yellow divider runs past shops, the ego traveling in the left lane on smooth pavement while same-direction traffic is stopped and queued. A gray minivan immediately ahead in the ego lane remains stationary because of congestion, holding the ego vehicle. Farther ahead in the same lane, a large construction truck also waits, extending the queue and limiting movement. Light oncoming vehicles pass in the right-hand lane without obstruction.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, because of traffic congestion ahead. The stopped van indicates slow or halted traffic ahead, so the driver should stop to maintain a safe following distance and avoid a collision."}
{"id": "train_01169", "split": "train", "clip_key": "titan_clip_977_000414_movie", "source": {"subset": "titan", "scenario": "clip_977", "frame": "000414"}, "frames": ["titan_clip_977_000414_movie_t-3.jpg", "titan_clip_977_000414_movie_t-2.jpg", "titan_clip_977_000414_movie_t-1.jpg", "titan_clip_977_000414_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of crossing guard directing traffic", "environment_perception": "An urban residential scene shows the ego car approaching a small unsignalized intersection on a very narrow two-way street with no median; the asphalt is dry and traffic is light. A cyclist ahead in the ego lane rides away through the intersection, keeping near the center and momentarily setting the pace. On the far left corner, a crossing guard wearing a helmet stands and actively directs traffic, monitoring the ego vehicle's approach. Parked bicycles line the left curb near an apartment entrance but stay clear of the roadway. Large convex mirrors on both corners aid visibility into the blind junction.", "hazard_reasoning": "There is a man wearing a helmet and a crossing guard uniform and standing on the far left corner of the intersection, directing traffic. The driver should be aware of the crossing guard directing traffic to anticipate instructions and maintain safe speed."}
{"id": "train_01170", "split": "train", "clip_key": "2020-0127-132751_005323_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "005323"}, "frames": ["2020-0127-132751_005323_movie_t-3.jpg", "2020-0127-132751_005323_movie_t-2.jpg", "2020-0127-132751_005323_movie_t-1.jpg", "2020-0127-132751_005323_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the black truck.", "environment_perception": "An urban multilane road approaches a signalized intersection on smooth dark pavement, with a chevroned buffer on the left and heavy queuing traffic. A black dump truck directly ahead in the ego lane is stopped because of a red traffic light, holding the ego vehicle in place. In the left adjacent lane a gray covered truck slightly ahead waits in the queue. To the right, a black taxi draws alongside and slows to join the line, reducing space for a rightward lane change. Overhead traffic signals show red for the ego direction.", "hazard_reasoning": "There is a black truck stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop promptly to avoid rear-ending the stopped truck at the red signal."}
{"id": "train_01171", "split": "train", "clip_key": "2020-0217-144444_012183_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "012183"}, "frames": ["2020-0217-144444_012183_movie_t-3.jpg", "2020-0217-144444_012183_movie_t-2.jpg", "2020-0217-144444_012183_movie_t-1.jpg", "2020-0217-144444_012183_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban street with tall buildings and shops lines a smooth single-lane roadway that curves right, with a low hedge median on the right and a fenced sidewalk on the left; traffic is light and steady. A dark car ahead in the ego lane travels through the bend at a modest pace, with a couple more vehicles farther ahead in the same direction. Pedestrians walk along the left sidewalk parallel to the road. An orange traffic cone is on the left side of the lane at the curb, slightly narrowing the usable lane width.", "hazard_reasoning": "An orange traffic cone is on the left side of the lane. Drivers should slow down to safely navigate around it and avoid entering the construction area."}
{"id": "train_01172", "split": "train", "clip_key": "2020-0228-150133_061629_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "061629"}, "frames": ["2020-0228-150133_061629_movie_t-3.jpg", "2020-0228-150133_061629_movie_t-2.jpg", "2020-0228-150133_061629_movie_t-1.jpg", "2020-0228-150133_061629_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid rear-ending the stopped vehicle", "environment_perception": "An urban multi-lane two-way road with surface lane markings and smooth dry pavement runs under a pedestrian overpass; traffic in the ego direction is heavy and stop-and-go while the opposite flow is lighter. A black coupe directly ahead in the ego lane is stopped, queuing because of congestion and holding the ego vehicle. In the adjacent left lane, a white van followed by a medium truck waits nearly abreast of the ego and inches forward with the queue, limiting lane changes. In the oncoming lanes to the right, a small truck moves toward us at low speed. A signalized intersection is visible in the distance beyond the queues.", "hazard_reasoning": "There is a black coupe stopped in front of the ego car, because of traffic congestion ahead. The driver should stop promptly to avoid a collision with the stationary vehicle."}
{"id": "train_01173", "split": "train", "clip_key": "2020-0220-151845_018262_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "018262"}, "frames": ["2020-0220-151845_018262_movie_t-3.jpg", "2020-0220-151845_018262_movie_t-2.jpg", "2020-0220-151845_018262_movie_t-1.jpg", "2020-0220-151845_018262_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes runs between tall buildings; the pavement is dry and well-marked, and traffic is moderate with the right lane moving more slowly. Ahead in the center ego lane, a white van drives away from the ego car at a steady pace, remaining in lane and setting the ego vehicle's pace. To the right, a black SUV near the ego vehicle creeps forward, close to vehicles ahead. Farther ahead in the right lane, a box truck leads a short queue moving slowly. Pedestrians and parked bicycles remain behind a roadside railing.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. The vehicle ahead may slow down or brake unexpectedly, so the driver should remain alert and be prepared to adjust speed."}
{"id": "train_01174", "split": "train", "clip_key": "titan_clip_443_000204_movie", "source": {"subset": "titan", "scenario": "clip_443", "frame": "000204"}, "frames": ["titan_clip_443_000204_movie_t-3.jpg", "titan_clip_443_000204_movie_t-2.jpg", "titan_clip_443_000204_movie_t-1.jpg", "titan_clip_443_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban side street with a single narrow brick-paved lane runs between buildings, with no divider and smooth pavement; vehicle traffic is light to nonexistent. Ahead, a woman in a white shirt and black skirt on the left side walks away from the ego vehicle while carrying a handbag, moving along the edge of the roadway. Farther ahead in the center of the lane, two other pedestrians also walk away in the same direction, occupying the lane and constraining the ego path. Several parked white vans line the left curb and intrude slightly into the lane, and a traffic cone on the right sits by steps, narrowing the usable space.", "hazard_reasoning": "There is a woman wearing a white shirt and a black skirt, carrying a handbag, and walking on the left side of the road, away from the ego car. She could step into the driving lane unexpectedly; slowing down provides extra reaction time to avoid a collision."}
{"id": "train_01175", "split": "train", "clip_key": "titan_clip_1356_000096_movie", "source": {"subset": "titan", "scenario": "clip_1356", "frame": "000096"}, "frames": ["titan_clip_1356_000096_movie_t-3.jpg", "titan_clip_1356_000096_movie_t-2.jpg", "titan_clip_1356_000096_movie_t-1.jpg", "titan_clip_1356_000096_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single undivided two-way carriageway and smooth pavement carries light traffic. The ego vehicle proceeds along the left side with bollards on the right and parked bicycles on the left narrowing the lane. Several pedestrians cross ahead near the middle of the block from right to left, briefly occupying the ego path and prompting a slow approach. A cyclist wearing a white shirt and black pants comes toward the ego along the left edge, keeping close to the curb and potentially passing alongside. Two cyclists ride ahead in the same lane away from the ego, loosely centered and constraining speed. A white van waits at a right-side junction, appearing ready to merge into the roadway.", "hazard_reasoning": "There is a cyclist wearing a white shirt and black pants, cycling along the left side of the road, toward the ego car. The cyclist is approaching the vehicle's path and the driver should slow down to maintain a safe distance and prevent a collision."}
{"id": "train_01176", "split": "train", "clip_key": "titan_clip_83_000576_movie", "source": {"subset": "titan", "scenario": "clip_83", "frame": "000576"}, "frames": ["titan_clip_83_000576_movie_t-3.jpg", "titan_clip_83_000576_movie_t-2.jpg", "titan_clip_83_000576_movie_t-1.jpg", "titan_clip_83_000576_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban commercial street with a single narrow one-way lane and smooth pavement has light to moderate flow that slows where the lane is constricted by curbside stops. Ahead on the right, a white box truck has stopped at the curb because it is being unloaded, its rear open with a worker beside it, and it partly intrudes into the travel lane, constraining the ego vehicle. On the left near the ego, a large van is parked close to the lane, further tightening the corridor. Farther ahead in the same direction, several cars move slowly through the narrowed section, setting the pace.", "hazard_reasoning": "There is a white truck that has stopped on the right side of the road, because it is being unloaded. This stopped truck blocks part of the lane and creates a blind spot; the driver should manoeuvre carefully around it to avoid a collision."}
{"id": "train_01177", "split": "train", "clip_key": "2020-0207-101955_040644_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "040644"}, "frames": ["2020-0207-101955_040644_movie_t-3.jpg", "2020-0207-101955_040644_movie_t-2.jpg", "2020-0207-101955_040644_movie_t-1.jpg", "2020-0207-101955_040644_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated divided road with one through lane in the ego direction runs under a canopy, with a concrete median and side barriers; the pavement is dry and smooth, and traffic remains light as the road rises ahead. A white hatchback travels ahead slightly left within the ego lane at a steady pace. Farther up the incline, a small box truck continues in the same lane and likely sets the pace. To the right beyond the raised median, a black SUV and other oncoming cars approach in their lanes with clear separation. No notable signs, signals, or obstacles are visible.", "hazard_reasoning": "No immediate hazards detected; driver can continue maintaining current speed and lane."}
{"id": "train_01178", "split": "train", "clip_key": "2020-0218-103119_030837_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "030837"}, "frames": ["2020-0218-103119_030837_movie_t-3.jpg", "2020-0218-103119_030837_movie_t-2.jpg", "2020-0218-103119_030837_movie_t-1.jpg", "2020-0218-103119_030837_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban four-lane two-way street with no median approaches a signalized intersection marked by a zebra crossing; the pavement is smooth and traffic is moderate. A white box truck ahead in the ego lane continues straight through the junction on a green signal, setting the ego vehicle's pace. An oncoming white van in the right-side lanes proceeds straight past the crosswalk, remaining in its lane and not entering the ego path. Several work vehicles are stopped along the left curb just beyond the intersection with cones and an open rear, slightly narrowing the roadside. A blue straight-ahead sign is visible.", "hazard_reasoning": "There is a white truck driving in front of the ego car in the ego lane, because of the green traffic light. The driver should be aware that the signal may change soon and the truck could slow or stop unexpectedly."}
{"id": "train_01179", "split": "train", "clip_key": "2020-0127-132751_037058_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "037058"}, "frames": ["2020-0127-132751_037058_movie_t-3.jpg", "2020-0127-132751_037058_movie_t-2.jpg", "2020-0127-132751_037058_movie_t-1.jpg", "2020-0127-132751_037058_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-ending the stopped hatchback.", "environment_perception": "An urban divided arterial with two lanes in the ego direction and a post-and-rail median to the right has smooth pavement and heavy, slow traffic. A black hatchback directly ahead in the ego lane is stopped with brake lights on because traffic is queued, holding the ego car. In the adjacent left lane, a white box truck slightly ahead rolls at walking pace in parallel, limiting visibility and room to maneuver. Across the median on the right, oncoming vehicles proceed through their lanes with intermittent gaps.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane in front of the ego car, due to traffic congestion ahead. The driver should stop to avoid rear-ending the halted hatchback."}
{"id": "train_01180", "split": "train", "clip_key": "2020-0225-145150_034100_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "034100"}, "frames": ["2020-0225-145150_034100_movie_t-3.jpg", "2020-0225-145150_034100_movie_t-2.jpg", "2020-0225-145150_034100_movie_t-1.jpg", "2020-0225-145150_034100_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A busy urban arterial with multiple same-direction lanes approaches a signalized intersection; the pavement is smooth and traffic is moderate to heavy with a short queue ahead. A blue pickup truck directly ahead in the ego lane slows because of congestion and constrains the ego vehicle's pace. Farther ahead near the stop line, a large green box truck in the queue remains slow or stopped, contributing to the backup. In the adjacent right lane, a white van and a silver car pass slightly faster but stay in their lane without encroaching.", "hazard_reasoning": "There is a blue pick-up truck slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The slowing indicates congestion ahead; you should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_01181", "split": "train", "clip_key": "2020-0203-154554_067553_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "067553"}, "frames": ["2020-0203-154554_067553_movie_t-3.jpg", "2020-0203-154554_067553_movie_t-2.jpg", "2020-0203-154554_067553_movie_t-1.jpg", "2020-0203-154554_067553_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in each direction and a painted center divide has dry, clean pavement and heavy stop-and-go flow. A white scooter is stopped immediately ahead in the ego lane because congestion blocks the way. Just beyond it, an orange microcar queues in the same lane and remains stationary, constraining the ego vehicle. To the right, in the opposite direction of travel, a stream of oncoming cars passes steadily in its own lanes. Blue overhead guide signs are visible above the road, and the low sun ahead creates mild glare through the roadside trees and buildings.", "hazard_reasoning": "There is a white scooter stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a collision with the halted scooter under heavy congestion."}
{"id": "train_01182", "split": "train", "clip_key": "titan_clip_1293_000258_movie", "source": {"subset": "titan", "scenario": "clip_1293", "frame": "000258"}, "frames": ["titan_clip_1293_000258_movie_t-3.jpg", "titan_clip_1293_000258_movie_t-2.jpg", "titan_clip_1293_000258_movie_t-1.jpg", "titan_clip_1293_000258_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A compact urban street with shops and apartments lines a narrow two-way road without a centerline; the pavement appears smooth and traffic is light. The ego vehicle proceeds along the left side with no median. A pedestrian wearing white pants and carrying an umbrella emerges from the left sidewalk and crosses directly in front of the ego car toward the right curb, briefly occupying its path. A white kei van is stopped at the right curb ahead, protruding slightly into the roadway but not blocking the left side. Farther ahead another small van pauses near the middle, while several bicycles remain parked outside the convenience store on the left.", "hazard_reasoning": "There is a pedestrian wearing white pants and carrying an umbrella, crossing the street from the left side, in front of the ego car. The driver should slow down to avoid a potential collision since the pedestrian may step into the vehicle's path unexpectedly."}
{"id": "train_01183", "split": "train", "clip_key": "2020-0214-145407_010420_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "010420"}, "frames": ["2020-0214-145407_010420_movie_t-3.jpg", "2020-0214-145407_010420_movie_t-2.jpg", "2020-0214-145407_010420_movie_t-1.jpg", "2020-0214-145407_010420_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction has patched pavement and steel plates, with construction barriers along the right curb; traffic is light and slows to a stop at an intersection. A black sedan ahead in the ego lane is stopped for a red light, holding the ego car. A motorbike waits just left of the sedan near the stop line, positioned to start alongside and potentially merge ahead of the ego vehicle. Pedestrians cluster on both sidewalks near the crosswalk but remain off the roadway. The hanging traffic signal shows red, and the roadside work zone narrows the right lane.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid a collision with the stationary sedan and comply with the red signal."}
{"id": "train_01184", "split": "train", "clip_key": "titan_clip_1199_000390_movie", "source": {"subset": "titan", "scenario": "clip_1199", "frame": "000390"}, "frames": ["titan_clip_1199_000390_movie_t-3.jpg", "titan_clip_1199_000390_movie_t-2.jpg", "titan_clip_1199_000390_movie_t-1.jpg", "titan_clip_1199_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban narrow two-way street with one lane each direction has no median and smooth pavement, and traffic is light as the road gently curves right. On the right side close to the ego lane, a man wearing a white shirt and black pants walks away from the ego car along the curb, staying near the vehicle's path. Ahead slightly right, a silver car is stopped at the mouth of a side street, positioned partly in the travel lane and creating a potential pinch point. Bicycles and small items are parked along the left curb but remain outside the roadway.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, and walking away from the ego car, on the right side of the road. Since the pedestrian is close to the roadway and moving in the same direction, they may change direction or step into traffic unexpectedly, so the driver should remain vigilant and adjust speed accordingly."}
{"id": "train_01185", "split": "train", "clip_key": "titan_clip_526_000162_movie", "source": {"subset": "titan", "scenario": "clip_526", "frame": "000162"}, "frames": ["titan_clip_526_000162_movie_t-3.jpg", "titan_clip_526_000162_movie_t-2.jpg", "titan_clip_526_000162_movie_t-1.jpg", "titan_clip_526_000162_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian on left side of intersection", "environment_perception": "An urban residential scene shows a narrow two-way road with no centerline and smooth pavement as the ego-vehicle approaches a small intersection on a gentle left bend; traffic is very light with no moving vehicles. On the left at the intersection, a pedestrian wearing a black shirt stands by the curb and faces the roadway, possibly about to enter the ego lane. On the right, a woman stands at a building entrance near a driveway, remaining stationary close to the edge and potentially interacting with the lane if she steps out. A convex mirror and a blue roadside sign are visible at the corner, and a parked white SUV in a recessed bay plus a parked motorcycle by the curb tighten the right margin.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, standing on the left side of the intersection. The pedestrian may step onto the road unexpectedly, so the driver should yield to avoid a collision."}
{"id": "train_01186", "split": "train", "clip_key": "2020-0218-151547_024417_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "024417"}, "frames": ["2020-0218-151547_024417_movie_t-3.jpg", "2020-0218-151547_024417_movie_t-2.jpg", "2020-0218-151547_024417_movie_t-1.jpg", "2020-0218-151547_024417_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial runs under an elevated expressway with at least two lanes in the ego direction; the pavement is dry and traffic is heavy and largely stopped. A silver sedan directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. To the right, a queue of cars including a black minivan slightly ahead remains stationary or creeps forward, limiting any lane change. A blue overhead guide sign reads Ohara 2 km.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle under these traffic conditions."}
{"id": "train_01187", "split": "train", "clip_key": "titan_clip_157_000438_movie", "source": {"subset": "titan", "scenario": "clip_157", "frame": "000438"}, "frames": ["titan_clip_157_000438_movie_t-3.jpg", "titan_clip_157_000438_movie_t-2.jpg", "titan_clip_157_000438_movie_t-1.jpg", "titan_clip_157_000438_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban two-way street lined with shops has no center divider, dry intact pavement, and light traffic. Directly ahead, a woman in a black skirt and grey top carries a handbag and holds an umbrella while crossing the pedestrian crosswalk from left to right in front of the ego vehicle, occupying its lane. At the left curb by the same crosswalk, two men wait near the edge of the road and may step in after her, making them relevant to the ego path.", "hazard_reasoning": "There is a woman wearing a black skirt, a greyish top, carrying a handbag, under an umbrella, crossing on the pedestrian crosswalk, in front of the ego car. The driver should yield because she is crossing directly ahead, ensuring her safety and avoiding a collision."}
{"id": "train_01188", "split": "train", "clip_key": "2020-0226-101332_062811_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "062811"}, "frames": ["2020-0226-101332_062811_movie_t-3.jpg", "2020-0226-101332_062811_movie_t-2.jpg", "2020-0226-101332_062811_movie_t-1.jpg", "2020-0226-101332_062811_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes and a metal median barrier runs between tall buildings; the pavement is dry and smooth, with moderate flow in the ego direction and heavier, slow oncoming traffic to the right. A gray sedan just ahead to the left moves right, changing from the left lane into the ego lane in front of the ego car, reducing headway. A white van farther ahead in the ego lane continues straight at a steady pace, setting the pace for the ego vehicle. Beyond the barrier, a queue of oncoming cars creeps along and remains separated from the ego path.", "hazard_reasoning": "There is a gray sedan changing lanes, from the left lane to the ego lane, in front of the ego car. Slow down to maintain a safe distance because the merging sedan could cut in abruptly and cause a collision."}
{"id": "train_01189", "split": "train", "clip_key": "2020-0131-135401_087779_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "087779"}, "frames": ["2020-0131-135401_087779_movie_t-3.jpg", "2020-0131-135401_087779_movie_t-2.jpg", "2020-0131-135401_087779_movie_t-1.jpg", "2020-0131-135401_087779_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings, separated by a concrete-and-rail median, with smooth pavement and moderate, steadily moving traffic. A white van directly ahead in the ego lane accelerates and pulls away as traffic ahead moves, keeping the path clear. A flatbed truck slightly ahead to the left continues straight in the adjacent lane at a similar pace, not affecting the ego vehicle's trajectory. Another white minivan travels near the left edge alongside and then eases forward in the curb lane while staying in its lane. Opposite-direction traffic flows smoothly beyond the median.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01190", "split": "train", "clip_key": "titan_clip_406_000090_movie", "source": {"subset": "titan", "scenario": "clip_406", "frame": "000090"}, "frames": ["titan_clip_406_000090_movie_t-3.jpg", "titan_clip_406_000090_movie_t-2.jpg", "titan_clip_406_000090_movie_t-1.jpg", "titan_clip_406_000090_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane and paver blocks runs between shops, lined by bollards; traffic is light and slow. Ahead in the ego lane a white delivery truck is stopped or creeping while a worker handles crates behind it, narrowing the passage and governing the ego vehicle's pace. On the left side of the road, a pedestrian in a white T-shirt walks toward the ego vehicle to pass the parked truck and may enter the ego path. Along the right edge several pedestrians walk near the curb by the bollards, one edging slightly toward the lane but keeping to the side. No traffic signals are visible, and the main constraint is the loading activity and tight clearance.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and walking on the left side of the road, towards the ego car, because of the parked vehicle. The driver should slow down to prevent a collision with the pedestrian stepping into the lane from behind the obstruction."}
{"id": "train_01191", "split": "train", "clip_key": "titan_clip_983_000510_movie", "source": {"subset": "titan", "scenario": "clip_983", "frame": "000510"}, "frames": ["titan_clip_983_000510_movie_t-3.jpg", "titan_clip_983_000510_movie_t-2.jpg", "titan_clip_983_000510_movie_t-1.jpg", "titan_clip_983_000510_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Yield to the cyclist", "environment_perception": "An urban side street with two-way traffic and no median runs ahead, its pavement smooth and the flow light. An oncoming cyclist in a striped shirt and black pants rides toward the camera near the intersection, tracking toward the center and potentially entering the ego lane. A pedestrian on the right edge walks toward the camera close to the travel lane, which could constrain passing space. Farther ahead at the junction, another cyclist moves left to right, briefly occupying the opposing side. Parked scooters and bicycles on the left and a white van on the right narrow the roadway.", "hazard_reasoning": "There is a cyclist wearing a striped shirt and black pants, and cycling, near the intersection, towards the ego-car. The cyclist is moving toward the ego-vehicle at the intersection, so the driver should yield to avoid a collision."}
{"id": "train_01192", "split": "train", "clip_key": "2020-0221-115122_029435_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "029435"}, "frames": ["2020-0221-115122_029435_movie_t-3.jpg", "2020-0221-115122_029435_movie_t-2.jpg", "2020-0221-115122_029435_movie_t-1.jpg", "2020-0221-115122_029435_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs beneath an elevated expressway, with a concrete median on the left and a painted island and solid yellow line on the right; the pavement is dry and traffic is heavy and mostly stopped. A white compact hatchback is directly ahead in the ego lane, stopped because of congestion and holding the ego vehicle. Farther ahead in the same lane, a white box truck and several cars queue under the viaduct, maintaining the jam. In the adjacent right lane, a silver van and a black SUV inch forward alongside, limiting any chance to merge. A separated sidewalk and side street remain behind the left barrier.", "hazard_reasoning": "There is a white compact hatchback stopped in the ego lane, because of traffic congestion ahead, in front of the ego car. You should stop to avoid colliding with the stationary vehicle."}
{"id": "train_01193", "split": "train", "clip_key": "titan_clip_883_000102_movie", "source": {"subset": "titan", "scenario": "clip_883", "frame": "000102"}, "frames": ["titan_clip_883_000102_movie_t-3.jpg", "titan_clip_883_000102_movie_t-2.jpg", "titan_clip_883_000102_movie_t-1.jpg", "titan_clip_883_000102_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban commercial district comes into view as the ego approaches a narrow undivided street across a zebra crosswalk at an unsignalized intersection; the pavement is smooth and traffic is light with no moving vehicles immediately ahead or oncoming. On the left sidewalk near the corner, a pedestrian wearing a pink T-shirt and carrying a backpack walks toward the intersection and may approach the crosswalk in the ego's path. Several vans are parked along the left curb just beyond the crosswalk, and bollards and storefronts slightly narrow the entry.", "hazard_reasoning": "There is a pedestrian wearing a pink t-shirt, carrying a backpack, walking on the left side of the road, towards the intersection. The driver should be aware because the pedestrian may step onto the crosswalk unexpectedly as the vehicle approaches."}
{"id": "train_01194", "split": "train", "clip_key": "titan_clip_725_000156_movie", "source": {"subset": "titan", "scenario": "clip_725", "frame": "000156"}, "frames": ["titan_clip_725_000156_movie_t-3.jpg", "titan_clip_725_000156_movie_t-2.jpg", "titan_clip_725_000156_movie_t-1.jpg", "titan_clip_725_000156_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban residential street with a single narrow lane and no median stretches ahead; the pavement is smooth and traffic is light as the car approaches a small intersection between mid-rise buildings. A pedestrian in a blue shirt and beige shorts is centered ahead, walking away in the middle of the road along the ego path, which may constrain the vehicle's speed. A white van is parked on the left at a recessed entrance, remaining stationary and outside the travel lane. Road markings show a forward arrow and a stop instruction near the upcoming intersection, with no traffic signal visible.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and beige shorts, walking in the middle of the road, away from the ego car. The driver must manoeuvre carefully to maintain a safe distance from the pedestrian walking in the road."}
{"id": "train_01195", "split": "train", "clip_key": "titan_clip_94_000408_movie", "source": {"subset": "titan", "scenario": "clip_94", "frame": "000408"}, "frames": ["titan_clip_94_000408_movie_t-3.jpg", "titan_clip_94_000408_movie_t-2.jpg", "titan_clip_94_000408_movie_t-1.jpg", "titan_clip_94_000408_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with one lane each direction and no median runs between buildings; the pavement is smooth and traffic is light throughout. A silver van ahead in the ego lane slows at a zebra crosswalk, briefly setting the pace. A pedestrian wearing black pants crosses from the right at the marked crosswalk in front of the van and may enter the ego path. Farther beyond the crosswalk, an oncoming vehicle continues straight without influencing the ego lane.", "hazard_reasoning": "There is a pedestrian wearing black pants, crossing at the pedestrian crosswalk to the right side of the road. Driver should stop because the pedestrian is entering the vehicle's path and may step further onto the road."}
{"id": "train_01196", "split": "train", "clip_key": "2020-0228-150133_002591_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "002591"}, "frames": ["2020-0228-150133_002591_movie_t-3.jpg", "2020-0228-150133_002591_movie_t-2.jpg", "2020-0228-150133_002591_movie_t-1.jpg", "2020-0228-150133_002591_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban shopping street with one lane each way and no median is shown, the asphalt dry and smooth, with light traffic and the oncoming lane to the right mostly clear. A white box truck directly ahead in the ego lane drives away from the camera at a steady pace, effectively setting the ego car's speed. Farther ahead in the same lane, a small white van continues in the same direction, maintaining distance behind other traffic. Along the right edge, a cyclist rides slowly beside the curb and railing, close to the travel lane and able to edge into it near side openings. Pedestrians line both sidewalks behind railings, remaining off the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The white truck obstructs the driver's view of the road ahead, which may hide upcoming hazards or changes in traffic flow."}
{"id": "train_01197", "split": "train", "clip_key": "2020-0205-103411_019574_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "019574"}, "frames": ["2020-0205-103411_019574_movie_t-3.jpg", "2020-0205-103411_019574_movie_t-2.jpg", "2020-0205-103411_019574_movie_t-1.jpg", "2020-0205-103411_019574_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "An urban multi-lane road with smooth pavement and a metal fence along the right edge carries moderate traffic toward a signalized intersection. A black van immediately ahead in the ego lane accelerates toward the junction and begins a right turn as a green right-turn arrow is displayed, briefly setting the ego car's pace. To the left ahead, a small white bus continues straight in its lane, keeping a steady speed alongside and limiting lateral clearance. Farther ahead on the right side of the roadway, a white box truck proceeds straight past the intersection and remains outside the ego lane. Overhead traffic lights are visible with the green right-turn indication active; no unusual obstacles appear.", "hazard_reasoning": "There is a black van accelerating in front of the ego car, because of a green right-turn signal. The van's acceleration under the green arrow means it will clear the lane soon, so the driver should start moving promptly to maintain traffic flow and avoid unnecessary delay."}
{"id": "train_01198", "split": "train", "clip_key": "2020-0210-155354_019650_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "019650"}, "frames": ["2020-0210-155354_019650_movie_t-3.jpg", "2020-0210-155354_019650_movie_t-2.jpg", "2020-0210-155354_019650_movie_t-1.jpg", "2020-0210-155354_019650_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each way and a solid yellow center line has dry pavement and slow, moderate traffic. Ahead, a white van in the ego lane slows and shifts left to pass a large delivery truck stopped along the right curb, temporarily constraining the ego car as it follows behind the van. In the opposing lane, a small white minivan approaches straight ahead, limiting how far the van can move toward the center line. To the right, a kei truck is parked at the curb while pedestrians on the right sidewalk stay clear of the roadway.", "hazard_reasoning": "There is a white van lane changing in front of the ego car, toward the left side of the road, because it is driving around a parked truck. The driver should slow down to maintain a safe following distance and react to the van's maneuver."}
{"id": "train_01199", "split": "train", "clip_key": "titan_clip_690_000276_movie", "source": {"subset": "titan", "scenario": "clip_690", "frame": "000276"}, "frames": ["titan_clip_690_000276_movie_t-3.jpg", "titan_clip_690_000276_movie_t-2.jpg", "titan_clip_690_000276_movie_t-1.jpg", "titan_clip_690_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around them", "environment_perception": "An urban commercial street with a single narrow lane, no median, and smooth pavement shows very light motor traffic as the car proceeds slowly. Two pedestrians stand together on the left edge of the road talking, close to the travel path and potentially stepping out. On the right, a worker pushes a blue handcart along the curb and angles toward the lane, which may enter the ego path. Farther ahead, a pedestrian walks away near the center of the lane, constraining the car's pace. A blue one-way sign is posted on the left. A parked bicycle, stacked shop goods, and a blue flat dolly sit along the edges, narrowing the usable roadway.", "hazard_reasoning": "There are two pedestrians talking in a group and standing on the left side of the road. They are close to the driving lane and may step into the path unexpectedly, so the driver should manoeuvre carefully around them to maintain safety."}
{"id": "train_01200", "split": "train", "clip_key": "titan_clip_202_000588_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_202_000588_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_202_000588_movie_t-3_augB1.jpg", "titan_clip_202_000588_movie_t-2_augB1.jpg", "titan_clip_202_000588_movie_t-1_augB1.jpg", "titan_clip_202_000588_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully", "environment_perception": "A narrow urban two-way street with no median and smooth pavement runs between low midrise buildings, and traffic is light as the ego vehicle approaches a crosswalked intersection. Ahead on the left edge, a white delivery van is stopped partly in the ego lane, narrowing the path and constraining the approach. Next to it, a pedestrian in a black shirt walks toward the ego vehicle as he opens the van's door and may step into the lane. A red triangular stop sign is posted at the intersection, with a stop marking before the zebra crossing.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and walking on the left side of the road, toward the ego car, because he is opening a door of a white van. The pedestrian opening the van door may step into the vehicle's path, so the driver should manoeuvre carefully to avoid a collision."}
{"id": "train_01201", "split": "train", "clip_key": "titan_clip_379_000372_movie", "source": {"subset": "titan", "scenario": "clip_379", "frame": "000372"}, "frames": ["titan_clip_379_000372_movie_t-3.jpg", "titan_clip_379_000372_movie_t-2.jpg", "titan_clip_379_000372_movie_t-1.jpg", "titan_clip_379_000372_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban backstreet with interlocking brick pavement has no marked lanes or median, and storefronts and small parking lots line both sides; traffic is light with no moving vehicles visible. Immediately ahead, a man in a checked shirt and white pants crosses from left to right in front of the ego-car, moving through the lane and occupying its path. Farther ahead in the center of the roadway, another pedestrian walks away along the lane, which may constrain the vehicle's pace. On the right curb a cyclist stands with a bicycle near a shop, waiting at the edge and potentially merging later. A no-parking sign is posted on the right, and parked cars are present in the lot on the left.", "hazard_reasoning": "There is a man, wearing a checked shirt and white pants, crossing the street, from the left side to the right side, in front of the ego-car. The driver should slow down because the pedestrian is crossing directly in front of the vehicle and may step into the path unexpectedly."}
{"id": "train_01202", "split": "train", "clip_key": "2020-0203-154554_050493_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "050493"}, "frames": ["2020-0203-154554_050493_movie_t-3.jpg", "2020-0203-154554_050493_movie_t-2.jpg", "2020-0203-154554_050493_movie_t-1.jpg", "2020-0203-154554_050493_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs under an elevated expressway, bordered by a left-side guardrail and smooth dry pavement; traffic is heavy and queued at a signalized junction. A gray sedan is stopped directly ahead in the ego lane because the traffic light is red, holding the ego vehicle in place. Farther ahead in the same lane, a small white truck waits in the queue and limits movement. In the adjacent right lane, a dark van idles slightly ahead, inching forward parallel to the ego without merging. Overhead signals display solid red for the ego direction.", "hazard_reasoning": "There is a gray sedan stopped in the ego lane, because of the red traffic lights. Stop because the vehicle ahead is halted at a red light, reducing the available space and requiring the ego-vehicle to decelerate to avoid a collision."}
{"id": "train_01203", "split": "train", "clip_key": "2020-0210-155354_013587_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "013587"}, "frames": ["2020-0210-155354_013587_movie_t-3.jpg", "2020-0210-155354_013587_movie_t-2.jpg", "2020-0210-155354_013587_movie_t-1.jpg", "2020-0210-155354_013587_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to stopped vehicle", "environment_perception": "An urban street with mid-rise buildings has smooth dry pavement and light traffic; the ego car travels in the left of two same-direction lanes separated by a dashed white line. A gray hatchback directly ahead in the ego lane is stopped for a flashing crosswalk light farther up the road, constraining the ego vehicle's pace. A white flatbed truck is parked along the right curb, partially protruding into the outer lane but outside the ego path. Farther ahead, a few vehicles continue in the right lane in the same direction.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car, in the ego lane, because of the flashing crosswalk light ahead on the road. The flashing crosswalk light indicates potential pedestrians crossing, so you should yield to the stopped vehicle to avoid a collision and protect pedestrians."}
{"id": "train_01204", "split": "train", "clip_key": "titan_clip_1332_000240_movie", "source": {"subset": "titan", "scenario": "clip_1332", "frame": "000240"}, "frames": ["titan_clip_1332_000240_movie_t-3.jpg", "titan_clip_1332_000240_movie_t-2.jpg", "titan_clip_1332_000240_movie_t-1.jpg", "titan_clip_1332_000240_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop to yield to the pedestrian.", "environment_perception": "A narrow urban street under an elevated structure has a single shared lane with no divider, block-paved and dry, and traffic is light with mainly pedestrians and a cyclist. No oncoming vehicles are visible. A man wearing a white shirt and black pants crosses mid-block ahead toward the ego car, stepping into the middle of the lane and potentially entering its path. A cyclist emerges from the right-side path and rides leftward across the zebra crossing, possibly cutting in front of the lane. A covered flatbed truck stands along the left edge near the ego vehicle, reducing space and partially obstructing the view ahead.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, crossing the street in the middle of the road, towards the ego car. The pedestrian is entering the path of travel, so the driver must stop to avoid collision."}
{"id": "train_01205", "split": "train", "clip_key": "2020-0213-143552_019996_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "019996"}, "frames": ["2020-0213-143552_019996_movie_t-3.jpg", "2020-0213-143552_019996_movie_t-2.jpg", "2020-0213-143552_019996_movie_t-1.jpg", "2020-0213-143552_019996_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth dry pavement runs between tall buildings, with red bollards separating a bus-priority lane on the right; traffic flows slowly in a short queue. A white truck directly ahead in the ego lane slows because congestion is visible ahead, and it sets the ego vehicle's pace. Farther ahead in the adjacent left lane, a large white box truck creeps forward, limiting an easy lane change. A silver hatchback to the front-left rolls alongside at low speed without signaling. On the far right, a cyclist on the sidewalk rides parallel to traffic and remains outside the roadway, while overhead signage shows a bus symbol consistent with the separated lane.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane, because there is traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a rear-end collision in the congested traffic."}
{"id": "train_01206", "split": "train", "clip_key": "2020-0212-102546_089887_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "089887"}, "frames": ["2020-0212-102546_089887_movie_t-3.jpg", "2020-0212-102546_089887_movie_t-2.jpg", "2020-0212-102546_089887_movie_t-1.jpg", "2020-0212-102546_089887_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A suburban divided arterial with two lanes in the ego direction runs alongside a tall sound barrier on the left, with a low post-and-rail median to the right separating the opposite carriageway; the pavement is clean and dry and traffic is light in the ego direction. Directly ahead in the ego lane, a white van is stopped in front of the ego car, holding position and constraining the ego's movement. On the far right, cars on the opposite carriageway move steadily as oncoming traffic and remain separated from the ego path. No traffic signals or speed signs are clearly visible, and there are no pedestrians, cyclists, or other obstacles.", "hazard_reasoning": "There is a white van stopped in front of the ego car. The stopped van requires the driver to stop to avoid a collision with the stationary vehicle."}
{"id": "train_01207", "split": "train", "clip_key": "2020-0207-101955_005458_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "005458"}, "frames": ["2020-0207-101955_005458_movie_t-3.jpg", "2020-0207-101955_005458_movie_t-2.jpg", "2020-0207-101955_005458_movie_t-1.jpg", "2020-0207-101955_005458_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane per direction approaches a signalized intersection; pavement appears smooth and traffic is moderate. A white truck with a green tarp is directly ahead in the ego lane and slows before the crosswalk due to congestion ahead, setting the pace. Farther ahead in the same direction, several vehicles queue beyond the intersection. An oncoming white van travels through the intersection in the opposite lane, passing without deviating toward the ego path. To the left, pedestrians wait at the curb by the zebra crossing near the truck. Overhead traffic lights span the junction.", "hazard_reasoning": "There is a white truck with a green tarp, that is slowing down in the ego lane because of traffic congestion ahead. Slow down to maintain a safe distance as congestion may cause sudden stops."}
{"id": "train_01208", "split": "train", "clip_key": "2020-0226-101332_010540_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "010540"}, "frames": ["2020-0226-101332_010540_movie_t-3.jpg", "2020-0226-101332_010540_movie_t-2.jpg", "2020-0226-101332_010540_movie_t-1.jpg", "2020-0226-101332_010540_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to the turning van", "environment_perception": "An urban intersection on a two-way left-hand-traffic road with no median and damp, patchy pavement; overall flow is moderate with short queues at the junction. Ahead, a black van sits in the middle of the intersection turning right into the ego lane, then easing forward as it merges and will set the pace. On the left curb by the crosswalk, a cyclist waits at the corner near the guardrail, watching the junction but remaining outside the lane. In the opposite direction beyond the intersection, several vans and cars form oncoming traffic that advances slowly toward the stop line without entering the ego path. An overhead pedestrian signal shows a red countdown of 49.", "hazard_reasoning": "There is a black van turning, in the middle of the intersection, to the ego lane. The van may cut into your path unexpectedly, so you should yield until it clears the intersection."}
{"id": "train_01209", "split": "train", "clip_key": "2020-0225-145150_045121_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "045121"}, "frames": ["2020-0225-145150_045121_movie_t-3.jpg", "2020-0225-145150_045121_movie_t-2.jpg", "2020-0225-145150_045121_movie_t-1.jpg", "2020-0225-145150_045121_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement runs straight past mid-rise buildings, bordered by a metal fence on the right; traffic is heavy but beginning to inch forward. A blue mini-truck directly ahead in the ego lane starts moving as congestion ahead eases, reopening a small gap and controlling the ego car's pace. Farther ahead in the same lane, a tall white box truck accelerates slightly from the queue, limiting visibility down the road. In the adjacent left lane, a silver delivery truck crawls alongside, narrowing room for lane changes. An overhead traffic signal and gantry are visible ahead with vehicles queued beneath them.", "hazard_reasoning": "There is a blue minivan starting to move in front of the ego car, in the ego lane, because traffic congestion ahead is easing. Follow the vehicle ahead to maintain a safe distance while traffic resumes moving."}
{"id": "train_01210", "split": "train", "clip_key": "titan_clip_851_000360_movie", "source": {"subset": "titan", "scenario": "clip_851", "frame": "000360"}, "frames": ["titan_clip_851_000360_movie_t-3.jpg", "titan_clip_851_000360_movie_t-2.jpg", "titan_clip_851_000360_movie_t-1.jpg", "titan_clip_851_000360_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban shopping-district intersection on a narrow bidirectional street features a marked zebra crossing; the pavement is smooth and vehicular flow is light, with no cars moving through as the ego vehicle is stopped at the line. Ahead, a pedestrian in a blue shirt and black skirt carrying a handbag crosses from right to left within the crosswalk, moving directly across the ego lane. Several other pedestrians ahead also traverse the crosswalk in both directions at walking pace, occupying the lane and controlling the ego vehicle's pace. On the right curb by the storefront, one person stands near the edge facing the crossing, while short flexible posts and bollards guard the corners.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, black skirt, and carrying a handbag, and crossing the street from the right to the left side, in a pedestrian crossing. The driver should slow down to yield to the crossing pedestrian and ensure safety."}
{"id": "train_01211", "split": "train", "clip_key": "titan_clip_1045_000138_movie", "source": {"subset": "titan", "scenario": "clip_1045", "frame": "000138"}, "frames": ["titan_clip_1045_000138_movie_t-3.jpg", "titan_clip_1045_000138_movie_t-2.jpg", "titan_clip_1045_000138_movie_t-1.jpg", "titan_clip_1045_000138_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street with single lanes and no median runs between low-rise buildings; the pavement is smooth and dry, and traffic is light with no moving vehicles. On the left side ahead, a pedestrian wearing a black shirt and carrying a backpack walks away from the ego-car along the curb, staying near the edge. On the right edge ahead, another pedestrian walks toward the camera beside the gutter and could drift near the travel path. Farther ahead near the left sidewalk, a third pedestrian moves away past bollards with little effect on the ego vehicle's path.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a backpack, and walking, on the left side of the road, away from the ego-car. The driver should slow down because the pedestrian may change direction or step into the lane unexpectedly."}
{"id": "train_01212", "split": "train", "clip_key": "2020-0131-103016_002929_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "002929"}, "frames": ["2020-0131-103016_002929_movie_t-3.jpg", "2020-0131-103016_002929_movie_t-2.jpg", "2020-0131-103016_002929_movie_t-1.jpg", "2020-0131-103016_002929_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs beneath an elevated expressway, with two same-direction lanes on smooth pavement and a fenced median separating oncoming traffic; flow is moderate and steady. A white sedan ahead in the ego lane travels at a constant speed under the viaduct, effectively setting our pace. To the right, a black taxi is alongside in the overtaking lane and moves ahead, passing without encroaching into the ego lane. Farther ahead, several cars in both same-direction lanes keep gaps and continue smoothly, posing no immediate conflict. On the far right beyond the fence, opposing vehicles move separately. A roadside circular sign on the left posts a 50 speed limit.", "hazard_reasoning": "No hazards detected in the scene, so the driver can maintain current speed and course."}
{"id": "train_01213", "split": "train", "clip_key": "titan_clip_812_000018_movie", "source": {"subset": "titan", "scenario": "clip_812", "frame": "000018"}, "frames": ["titan_clip_812_000018_movie_t-3.jpg", "titan_clip_812_000018_movie_t-2.jpg", "titan_clip_812_000018_movie_t-1.jpg", "titan_clip_812_000018_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban alley with a single unmarked carriageway runs straight ahead; the asphalt is dry and intact, and traffic is essentially absent. No moving vehicles or pedestrians appear in front of the ego vehicle or in the oncoming path. Parked bicycles line both curbs and a scooter stands on the right near a vending machine, narrowing the passage but leaving room to pass. Shopfront fixtures and small bags or crates sit along the left edge, and no traffic signals or regulatory signs are visible.", "hazard_reasoning": "There are no vehicles, pedestrians, or obstacles in the alleyway, and no traffic controls are present, so the path is clear and no immediate hazards are detected. The driver can maintain speed and proceed safely under these conditions."}
{"id": "train_01214", "split": "train", "clip_key": "titan_clip_910_000342_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_910_000342_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_910_000342_movie_t-3_augB1.jpg", "titan_clip_910_000342_movie_t-2_augB1.jpg", "titan_clip_910_000342_movie_t-1_augB1.jpg", "titan_clip_910_000342_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street with a single narrow shared lane is brick-paved and lacks any divider; vehicle traffic is very light and slow amid many pedestrians. A pedestrian in black pants and a white shirt crosses from the middle of the lane to the left directly ahead of the vehicle, briefly occupying the path. A white minibus further ahead in the same lane creeps away, its pace constrained by people crossing. From the right curb, a pedestrian steps into the roadway and walks along the near edge, which may enter the ego lane. Two more pedestrians near the center-right cross diagonally toward the left a few meters ahead, further filling the lane. Parked bicycles and shop signboards along the left side encroach on the roadway.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, crossing from the middle of the lane to the left side. The pedestrian is moving unpredictably across the lane, so the driver should slow down to avoid a collision."}
{"id": "train_01215", "split": "train", "clip_key": "titan_clip_125_000504_movie", "source": {"subset": "titan", "scenario": "clip_125", "frame": "000504"}, "frames": ["titan_clip_125_000504_movie_t-3.jpg", "titan_clip_125_000504_movie_t-2.jpg", "titan_clip_125_000504_movie_t-1.jpg", "titan_clip_125_000504_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the turning van", "environment_perception": "In a dense urban corridor, the ego vehicle advances on a two-lane road with no median and smooth pavement, and overall traffic is light. It approaches a small unsignalized intersection marked by a zebra crossing. On the right side of the intersection, a white van is stopped, waiting to turn into the ego lane. On the right sidewalk near the crosswalk, several pedestrians, including one pushing a small cart, move along the curb and may step toward the crossing. On the left sidewalk, a pedestrian with an umbrella walks toward the intersection while remaining clear of the roadway.", "hazard_reasoning": "There is a white van stopped on the right side of the intersection, because they are waiting to turn into the ego lane. The van may merge into the ego lane unexpectedly, so the driver should be prepared for possible lane intrusion."}
{"id": "train_01216", "split": "train", "clip_key": "titan_clip_626_000018_movie", "source": {"subset": "titan", "scenario": "clip_626", "frame": "000018"}, "frames": ["titan_clip_626_000018_movie_t-3.jpg", "titan_clip_626_000018_movie_t-2.jpg", "titan_clip_626_000018_movie_t-1.jpg", "titan_clip_626_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware", "environment_perception": "The scene is an urban commercial street with a narrow shared roadway paved with bricks, no marked lanes or divider, and very light vehicle traffic. The surface is dry and buildings press close on both sides. A pedestrian in a white shirt and gray pants walks away along the left edge where there is no sidewalk, close to the ego path and potentially entering it. A small black van ahead in the travel path moves slowly away along the center, setting the pace. Farther ahead, a few pedestrians in the roadway walk along the middle in both directions, reducing the available space. Bicycles are parked along the right curb and one at the left edge, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and gray pants, walking on the left side of the road, away from the ego car, because there is no sidewalk. The pedestrian's location on the roadway poses a collision risk, so the driver should be aware to maintain a safe distance."}
{"id": "train_01217", "split": "train", "clip_key": "2020-0225-102455_005457_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "005457"}, "frames": ["2020-0225-102455_005457_movie_t-3.jpg", "2020-0225-102455_005457_movie_t-2.jpg", "2020-0225-102455_005457_movie_t-1.jpg", "2020-0225-102455_005457_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban signalized intersection with zebra crossings comes into view on a two-way road with no median and dry pavement, and traffic appears moderate with active cross flow. Ahead in the ego lane, a black dump truck drives away from the ego car through the intersection, occupying the ego path. In the intersection, a silver minivan crosses left to right in front of the ego lane, continuing through the crosswalk and influencing when the ego vehicle can proceed. Farther right ahead, a white box truck also travels rightward across the intersection, following the minivan and further occupying the crossing. No clear oncoming traffic is visible.", "hazard_reasoning": "There is a black truck driving in the ego lane, away from the ego car. Since the traffic light ahead is red, the truck may stop suddenly, so the driver should maintain distance and follow the vehicle ahead to avoid collision."}
{"id": "train_01218", "split": "train", "clip_key": "titan_clip_820_000036_movie", "source": {"subset": "titan", "scenario": "clip_820", "frame": "000036"}, "frames": ["titan_clip_820_000036_movie_t-3.jpg", "titan_clip_820_000036_movie_t-2.jpg", "titan_clip_820_000036_movie_t-1.jpg", "titan_clip_820_000036_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "be cautious of cones ahead", "environment_perception": "A narrow urban two-way street with no centerline and smooth pavement shows light traffic as the ego vehicle proceeds straight. Ahead on the left, a pedestrian by the fenced lane steps into the roadway and walks toward the right, potentially entering the ego path. On the right, another person stands at a building entrance beside a row of traffic cones along the curb, remaining stationary near the edge. Farther ahead, a small van is stopped at the left curb, slightly narrowing the usable lane.", "hazard_reasoning": "There are traffic cones on the right side of the road. They indicate a construction area that may narrow the lane and require the driver to adjust position and speed."}
{"id": "train_01219", "split": "train", "clip_key": "titan_clip_1174_000036_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1174_000036_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1174_000036_movie_t-3_augB1.jpg", "titan_clip_1174_000036_movie_t-2_augB1.jpg", "titan_clip_1174_000036_movie_t-1_augB1.jpg", "titan_clip_1174_000036_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow, unmarked lane and no divider stretches ahead; the pavement is mostly smooth with patches, and traffic is very light with no vehicles. Work-zone fencing runs along the left side and green cones along the sides narrow the passage between buildings. A pedestrian in a brown suit walks away from the ego vehicle in the middle of the lane ahead, occupying the travel path and setting the pace. Farther ahead, a few pedestrians drift between the shopfronts and the roadway near the center, intermittently edging into the lane and potentially entering the ego path.", "hazard_reasoning": "There is pedestrian wearing a brown suit, walking away from the ego car, in front of the ego car. The pedestrian could unexpectedly step into the path or slow down further, so the driver should reduce speed to maintain a safe separation."}
{"id": "train_01220", "split": "train", "clip_key": "2020-0226-140503_067878_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "067878"}, "frames": ["2020-0226-140503_067878_movie_t-3.jpg", "2020-0226-140503_067878_movie_t-2.jpg", "2020-0226-140503_067878_movie_t-1.jpg", "2020-0226-140503_067878_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of merging taxi", "environment_perception": "An urban multi-lane arterial meets a wide signalized intersection with a landscaped median; the dry pavement includes a red curbside lane, and traffic is light as the ego car waits at a red light. A green taxi turns left across the front of the ego vehicle from the right side and merges into the same-direction right lane ahead, briefly cutting across the ego path. Farther ahead in the intersection, a white van moves left to right through the cross street and clears without entering the ego lane. On the far right beyond the median, a box truck is stopped near the corner facing the intersection, remaining outside the ego lane.", "hazard_reasoning": "There is a green taxi turning left in front of the ego car, into the right lane. The taxi's lane change could intersect the driver's path unexpectedly, requiring caution to avoid a collision."}
{"id": "train_01221", "split": "train", "clip_key": "titan_clip_11_000354_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_11_000354_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_11_000354_movie_t-3_augB1.jpg", "titan_clip_11_000354_movie_t-2_augB1.jpg", "titan_clip_11_000354_movie_t-1_augB1.jpg", "titan_clip_11_000354_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "A narrow urban side street with a single lane and brick paving runs between tall buildings, with no median and light traffic that moves steadily. A black van is stopped along the right curb, narrowing the lane. On the right beside this van, two pedestrians wearing black shirts and brown pants stand close to the roadway because the vehicle occupies the curb space, placing them near the ego path. Far ahead at the end of the block, several pedestrians cross the street from left to right across the ego vehicle's path. A small handcart or signboard sits near the lane center ahead, and construction cones and scaffolding line the left frontage.", "hazard_reasoning": "There are two pedestrians, wearing black shirts and brown pants, standing on the right side of the road, because of the parked vehicle. Carefully manoeuvre around the pedestrians to avoid collision."}
{"id": "train_01222", "split": "train", "clip_key": "2020-0205-152530_039220_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "039220"}, "frames": ["2020-0205-152530_039220_movie_t-3.jpg", "2020-0205-152530_039220_movie_t-2.jpg", "2020-0205-152530_039220_movie_t-1.jpg", "2020-0205-152530_039220_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with no median and smooth pavement passes under an elevated roadway, and traffic is moderate, bunching into slow-moving queues ahead. In the ego lane a black sedan ahead slows because of congestion, setting the ego vehicle's pace. Slightly farther ahead in the adjacent right lane a small white truck proceeds slowly with the queue, limiting a right-lane change. On the near right a blue minivan by the curb is nearly stationary just beyond the crosswalk and may enter the adjacent lane. Pedestrians stay on the left sidewalk near a bus stop behind a guardrail, away from the roadway.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane, because of traffic congestion ahead. Slow down to adapt to the reduced speed ahead and avoid a rear-end collision in the congested area."}
{"id": "train_01223", "split": "train", "clip_key": "2020-0203-154554_057449_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "057449"}, "frames": ["2020-0203-154554_057449_movie_t-3.jpg", "2020-0203-154554_057449_movie_t-2.jpg", "2020-0203-154554_057449_movie_t-1.jpg", "2020-0203-154554_057449_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A tree-lined urban arterial has two lanes in each direction separated by a painted hatched median, and the pavement appears smooth; traffic is light with sparse oncoming flow. A gray van ahead in the ego lane slows and sets the pace for the ego car, consistent with the caption. A small car farther ahead in the left adjacent lane continues steadily without affecting the ego path. A roadside regulatory sign shows 30 inside a red circle.", "hazard_reasoning": "There is a gray van slowing in front of the ego car because of traffic congestion ahead in the ego lane. Slow down to maintain a safe following distance and avoid collision due to congested traffic."}
{"id": "train_01224", "split": "train", "clip_key": "titan_clip_764_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_764_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_764_000204_movie_t-3_augB1.jpg", "titan_clip_764_000204_movie_t-2_augB1.jpg", "titan_clip_764_000204_movie_t-1_augB1.jpg", "titan_clip_764_000204_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow forward lane and no median has smooth pavement and light traffic, with no motor vehicles visible ahead or oncoming. A pedestrian wearing a backpack stands in the middle of the intersection ahead, directly in the ego vehicle's path and holding position. Slightly left ahead, three pedestrians walk across the roadway toward the right, crossing in front of the ego lane and constraining progress. On the right edge, a man with a wheeled bag stands at the curb near shopfronts close to the roadway. Bicycles are parked along the right side, reducing available shoulder space.", "hazard_reasoning": "There is a pedestrian wearing a backpack and standing in the middle of the intersection. The driver should slow down because the pedestrian could step into the vehicle's path and cause a collision."}
{"id": "train_01225", "split": "train", "clip_key": "titan_clip_327_000672_movie", "source": {"subset": "titan", "scenario": "clip_327", "frame": "000672"}, "frames": ["titan_clip_327_000672_movie_t-3.jpg", "titan_clip_327_000672_movie_t-2.jpg", "titan_clip_327_000672_movie_t-1.jpg", "titan_clip_327_000672_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow single-lane shared roadway and brick paving has no divider and no visible vehicle traffic, and the surface appears dry and in good condition. On the left near ahead, a pedestrian wearing a pink skirt and a backpack walks toward the ego in the roadway rather than the crowded sidewalk, potentially entering the vehicle's path. From the right foreground, another pedestrian with a backpack crosses diagonally in front of the ego toward the left side, briefly occupying the lane and slowing progress. Along the right curb, a worker pulls a large green handcart and occasionally drifts into the lane, creating a moving obstacle.", "hazard_reasoning": "There is a pedestrian wearing a pink skirt and having a backpack walking towards the ego car on the left side of the road because there are other pedestrians on the sidewalk. The pedestrian may enter the vehicle's path unexpectedly, so the driver should slow down to maintain a safe distance and avoid collision."}
{"id": "train_01226", "split": "train", "clip_key": "2020-0203-114632_062375_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "062375"}, "frames": ["2020-0203-114632_062375_movie_t-3.jpg", "2020-0203-114632_062375_movie_t-2.jpg", "2020-0203-114632_062375_movie_t-1.jpg", "2020-0203-114632_062375_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "An urban four-way intersection with two lanes each way and wide zebra crosswalks lies ahead, the pavement smooth and traffic moderate as the ego vehicle approaches in the left lane without a median. To the left ahead at the crosswalk, a pedestrian wearing a black coat crosses the street and may enter the ego lane. In the middle of the junction ahead, a black minivan traverses right to left across the ego path as it clears the intersection. On the far side to the right, several white vans and cars wait along the curb by shops with no immediate effect on the lane. A small cone-marked traffic island sits near the center-right.", "hazard_reasoning": "There is a pedestrian wearing a black coat and crossing the street, to the left side, ahead at the crosswalk. The driver should yield to this pedestrian to prevent a potential collision."}
{"id": "train_01227", "split": "train", "clip_key": "titan_clip_97_000492_movie", "source": {"subset": "titan", "scenario": "clip_97", "frame": "000492"}, "frames": ["titan_clip_97_000492_movie_t-3.jpg", "titan_clip_97_000492_movie_t-2.jpg", "titan_clip_97_000492_movie_t-1.jpg", "titan_clip_97_000492_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down for cyclist ahead", "environment_perception": "An urban two-way street with midrise shops and trees has smooth pavement, no median, and light to moderate, slow-moving traffic. A cyclist wearing a white shirt and black pants rides ahead in the ego lane, moving away at low speed and effectively setting the ego vehicle's pace. Along the right curb, a black minivan is stopped or creeping with its rear close to the travel lane, reducing clearance as the ego passes. In the opposite lane to the left, an oncoming black sedan approaches slowly and continues straight without encroaching. Parked vehicles line both sides, narrowing the corridor but leaving the ego lane passable.", "hazard_reasoning": "There is a cyclist wearing a white shirt and black pants cycling away from the ego car, in the ego lane. The cyclist occupies the ego lane ahead, so the driver should slow down to maintain safe following distance and avoid a collision."}
{"id": "train_01228", "split": "train", "clip_key": "2020-0203-154554_032496_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "032496"}, "frames": ["2020-0203-154554_032496_movie_t-3.jpg", "2020-0203-154554_032496_movie_t-2.jpg", "2020-0203-154554_032496_movie_t-1.jpg", "2020-0203-154554_032496_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the bus merging ahead", "environment_perception": "An urban three-lane road runs beneath an elevated expressway, the pavement smooth and traffic moving at a moderate pace. Ahead, a large white coach bus merges into the ego lane and cuts in front of the ego car, reducing its available gap. A small white van continues straight in the adjacent center lane at a similar speed without encroaching on the ego path. Farther ahead in the right lane, another white minivan proceeds steadily with clear spacing. On the far left beyond a planted divider, a separate side road carries another coach bus that remains isolated from the ego's flow. Overhead gantry direction signs are present.", "hazard_reasoning": "There is a white bus cutting into the ego lane in front of the ego car. You should be aware to adjust your speed or position as the bus merges into your lane to maintain safe following distance."}
{"id": "train_01229", "split": "train", "clip_key": "2020-0228-102841_074112_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "074112"}, "frames": ["2020-0228-102841_074112_movie_t-3.jpg", "2020-0228-102841_074112_movie_t-2.jpg", "2020-0228-102841_074112_movie_t-1.jpg", "2020-0228-102841_074112_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and smooth pavement runs under an elevated roadway; traffic is moderate and begins to pick up near a signalized junction. A white van directly ahead in the ego lane accelerates away through the green light, opening distance to the camera. A large white box truck on the right travels parallel at close range, maintaining its lane and limiting any right merge. Farther ahead in the left lane, a black van proceeds straight in slower-moving traffic, influencing the pace there. The traffic signal visible ahead shows green, and pedestrians stay on the sidewalks by the intersection.", "hazard_reasoning": "There is a white van accelerating in the ego lane, away from the ego car, because of a green traffic light ahead. The van's movement indicates the signal is green and you should begin moving to maintain traffic flow and avoid hesitation at the light."}
{"id": "train_01230", "split": "train", "clip_key": "titan_clip_640_000558_movie", "source": {"subset": "titan", "scenario": "clip_640", "frame": "000558"}, "frames": ["titan_clip_640_000558_movie_t-3.jpg", "titan_clip_640_000558_movie_t-2.jpg", "titan_clip_640_000558_movie_t-1.jpg", "titan_clip_640_000558_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around pedestrian", "environment_perception": "A narrow urban back street with no centerline functions as a single shared lane, bounded by buildings, with intact pavement and very light traffic. A pedestrian in a white shirt carrying a handbag walks toward the ego vehicle along the left edge where a narrow shoulder serves as a sidewalk, staying close to the travel path and potentially constraining the vehicle's pace. No other moving road users are visible ahead or oncoming. A white car and several bicycles sit in a recessed garage opening on the left, and vending machines and a utility pole stand tight to the right edge, reducing lateral clearance.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, walking on the left side of the road, towards the ego car, because there is a sidewalk. The driver should manoeuvre around this pedestrian to avoid conflict and ensure safe passing."}
{"id": "train_01231", "split": "train", "clip_key": "2020-0210-155354_006551_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "006551"}, "frames": ["2020-0210-155354_006551_movie_t-3.jpg", "2020-0210-155354_006551_movie_t-2.jpg", "2020-0210-155354_006551_movie_t-1.jpg", "2020-0210-155354_006551_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "In a dense urban setting, the ego vehicle travels on a two-lane two-way road with no median and sound pavement, approaching a railway underpass; traffic is heavy and slow. Immediately ahead in the ego lane, a white hatchback is stopped because of congestion and holds the ego car. On the right edge near the curb, a blue handcart occupies part of the roadway and moves slowly, creating a minor roadside obstruction as the lane narrows under the bridge. Pedestrians crowd the sidewalks on both sides behind guardrails and continue along the route without entering the lane. A low-clearance sign on the overpass shows 3.7 m.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because of traffic congestion. The driver must stop promptly to maintain a safe distance and avoid a collision due to the halted vehicle ahead in the congested traffic."}
{"id": "train_01232", "split": "train", "clip_key": "titan_clip_392_000084_movie", "source": {"subset": "titan", "scenario": "clip_392", "frame": "000084"}, "frames": ["titan_clip_392_000084_movie_t-3.jpg", "titan_clip_392_000084_movie_t-2.jpg", "titan_clip_392_000084_movie_t-1.jpg", "titan_clip_392_000084_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban backstreet with interlocking-brick pavement has no centerline or median, and parked vehicles along both curbs reduce the usable width; traffic is light and slow. Ahead in the ego lane, a pedestrian in a white shirt and pants walks away from the camera along the middle of the road, occupying the ego path and constraining speed. Farther ahead near the left curb, a small silver kei van stands stopped, partially inside the lane and creating a pinch point. On the right, a white van is parked facing the same direction, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and pants, walking away from the ego car, in the ego lane. Because the pedestrian is occupying the vehicle's lane and may change direction unpredictably, the driver should manoeuvre around them to maintain safety."}
{"id": "train_01233", "split": "train", "clip_key": "2020-0204-150838_071273_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "071273"}, "frames": ["2020-0204-150838_071273_movie_t-3.jpg", "2020-0204-150838_071273_movie_t-2.jpg", "2020-0204-150838_071273_movie_t-1.jpg", "2020-0204-150838_071273_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated expressway with multiple same-direction lanes runs beside a barriered right-side ramp; the pavement is clean and dry and traffic is slow to moderate. A red container truck directly ahead in the ego lane slows and reduces the gap, constraining the ego vehicle's pace. In the lane to the left, a silver van slightly ahead keeps a similar slow speed alongside, limiting an immediate lane change. Farther ahead in the left lanes, several heavy trucks travel in a slow queue that restricts available gaps. On the separated ramp to the right, cars move independently of the mainline. A circular 60 speed limit sign stands by the ramp split.", "hazard_reasoning": "There is a red truck slowing down in front of the ego-car, in the ego lane. Slow down to maintain a safe following distance and prevent a collision."}
{"id": "train_01234", "split": "train", "clip_key": "titan_clip_245_000390_movie", "source": {"subset": "titan", "scenario": "clip_245", "frame": "000390"}, "frames": ["titan_clip_245_000390_movie_t-3.jpg", "titan_clip_245_000390_movie_t-2.jpg", "titan_clip_245_000390_movie_t-1.jpg", "titan_clip_245_000390_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with smooth pavement and no median is seen, the ego car traveling in the left lane amid light to moderate flow. A black minivan ahead in the ego lane moves slowly behind another car, constraining the ego vehicle's pace. On the right edge of the lane, a pedestrian wearing a blue shirt and black pants wheels a cart toward the camera, walking partially in the roadway and likely to encroach on the ego path. No oncoming vehicles are visible. Several vans are stopped along the left curb, one with its rear door open for loading, narrowing the passage.", "hazard_reasoning": "There is a pedestrian, wearing a blue shirt and black pants, and wheeling a cart, walking on the right side of the road, in the ego lane, towards the ego car. The pedestrian may cross or obstruct your path, so you should manoeuvre around them to avoid a collision."}
{"id": "train_01235", "split": "train", "clip_key": "titan_clip_310_000096_movie", "source": {"subset": "titan", "scenario": "clip_310", "frame": "000096"}, "frames": ["titan_clip_310_000096_movie_t-3.jpg", "titan_clip_310_000096_movie_t-2.jpg", "titan_clip_310_000096_movie_t-1.jpg", "titan_clip_310_000096_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban street climbs uphill on a narrow two-way road with no centerline or median; the asphalt is worn and patched, and traffic is light with no vehicles ahead. Construction hoarding lines the left side, with a cone and materials close to the curb that slightly constrict the lane. On the left edge ahead, a pedestrian in a white shirt and skirt walks toward the camera along the roadway and could enter the ego lane. Farther ahead on the left, a small group of pedestrians lingers near a construction entrance at the gutter, close to the path. On the right sidewalk, another person walks uphill away from the ego vehicle and remains clear of the road.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and a skirt walking on the left side of the road, toward the ego car. The driver should manoeuvre around the pedestrian to maintain safety as they may step into the vehicle's path."}
{"id": "train_01236", "split": "train", "clip_key": "2020-0213-143552_056702_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "056702"}, "frames": ["2020-0213-143552_056702_movie_t-3.jpg", "2020-0213-143552_056702_movie_t-2.jpg", "2020-0213-143552_056702_movie_t-1.jpg", "2020-0213-143552_056702_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with red-colored pavement approaches a signalized intersection, and a short raised median divides a right-turn lane on the ego vehicle's right; the surface is smooth and traffic is light to moderate and flowing. A white box truck directly ahead in the ego lane continues straight at a steady pace, setting the ego car's speed as traffic moves smoothly. A silver van slightly ahead to the left in the adjacent same-direction lane also proceeds straight through the junction. In the opposing lanes across the median, a truck approaches and passes the intersection without affecting the ego vehicle.", "hazard_reasoning": "There is a white truck driving forward in front of the ego car in the ego lane, because traffic is smooth. Following the lead vehicle helps anticipate stopping at the red light and maintain safe spacing."}
{"id": "train_01237", "split": "train", "clip_key": "titan_clip_256_000960_movie", "source": {"subset": "titan", "scenario": "clip_256", "frame": "000960"}, "frames": ["titan_clip_256_000960_movie_t-3.jpg", "titan_clip_256_000960_movie_t-2.jpg", "titan_clip_256_000960_movie_t-1.jpg", "titan_clip_256_000960_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban side street with a single narrow lane and no divider runs between buildings; the pavement is smooth and traffic is light. The way ahead is partly shaded and a stopped truck on the right makes the lane tight. A pedestrian ahead on the left walks away from the ego car along the roadway carrying a handbag, occupying the lane edge and reducing passing space. A large box truck stands on the right shoulder just ahead, stationary and intruding into the lane, constraining the path. At the truck's open rear, a person is partially visible with an arm extended toward the roadway near the ego lane.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking on the left side of the road, away from the ego car. The pedestrian close to the roadway could enter the vehicle's path unexpectedly, so the driver should slow down to maintain safety."}
{"id": "train_01238", "split": "train", "clip_key": "2020-0204-103442_061630_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "061630"}, "frames": ["2020-0204-103442_061630_movie_t-3.jpg", "2020-0204-103442_061630_movie_t-2.jpg", "2020-0204-103442_061630_movie_t-1.jpg", "2020-0204-103442_061630_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban arterial with two lanes in the ego direction runs past apartments and shops; the asphalt is dry and in good condition, and traffic is moderate. A pedestrian overpass spans the road ahead and fences line both sidewalks. A black sedan directly ahead in the left ego lane slows because of a queue of vehicles ahead, constraining the ego car's pace. A white minivan in the adjacent right lane continues straight slightly faster and stays in its lane. A pedestrian stands on the left sidewalk by a fence near some bags, remaining away from the roadway.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01239", "split": "train", "clip_key": "2020-0207-101955_078009_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "078009"}, "frames": ["2020-0207-101955_078009_movie_t-3.jpg", "2020-0207-101955_078009_movie_t-2.jpg", "2020-0207-101955_078009_movie_t-1.jpg", "2020-0207-101955_078009_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial bounded by sound barriers stretches ahead, the ego car traveling in the left lane toward a signalized crosswalk and junction on smooth pavement with light traffic. A blue truck directly ahead in the ego lane slows as it approaches the crosswalk, constraining the ego vehicle's pace. Farther ahead in the adjacent right lane, a large white box truck moves steadily toward the intersection and does not affect the ego lane. In the opposite lanes to the right, a small white car advances through the same area, remaining separated from the ego path. Overhead traffic signals are visible above the crossing, though their aspects are not clearly discernible.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, in front of the ego car. The truck's reduction in speed could force the driver to brake abruptly to avoid collision, so slowing down will maintain a safe following distance."}
{"id": "train_01240", "split": "train", "clip_key": "2020-0203-154554_011452_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "011452"}, "frames": ["2020-0203-154554_011452_movie_t-3.jpg", "2020-0203-154554_011452_movie_t-2.jpg", "2020-0203-154554_011452_movie_t-1.jpg", "2020-0203-154554_011452_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging white van", "environment_perception": "An urban arterial with three lanes in the ego direction runs straight on smooth pavement, and traffic is moderate and flowing steadily toward an intersection. A white van ahead moves from the left lane into the ego lane and then pulls away, increasing the gap to the camera. A silver minivan ahead in the right lane continues straight and gradually drives off without affecting the ego path. A cyclist rides along the left curb beside the sidewalk railing, moving in the same direction and staying outside the travel lane. Farther ahead, several same-direction cars proceed through the junction and maintain the pace.", "hazard_reasoning": "There is a white van switching from the left lane to the ego lane and driving away from the ego car. Be aware of the white van merging into your lane so you can adjust speed to avoid a potential collision."}
{"id": "train_01241", "split": "train", "clip_key": "titan_clip_168_000162_movie", "source": {"subset": "titan", "scenario": "clip_168", "frame": "000162"}, "frames": ["titan_clip_168_000162_movie_t-3.jpg", "titan_clip_168_000162_movie_t-2.jpg", "titan_clip_168_000162_movie_t-1.jpg", "titan_clip_168_000162_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop to let the pedestrian cross", "environment_perception": "An urban multi-lane arterial runs through a business district with smooth pavement and no physical median, and traffic flows at a moderate pace in both directions. A pedestrian in a blue T-shirt crosses from the right to the left on the crosswalk directly ahead, moving across the ego lane and becoming the main immediate conflict. A large white van to the right advances in the adjacent same-direction lane and partly obscures the view of the crossing as it passes. Several cars ahead in the same direction continue straight in the middle lanes while oncoming traffic moves steadily on the far side. Overhead direction boards and a no-stopping sign on the left are visible.", "hazard_reasoning": "A pedestrian in a blue t-shirt is crossing the street at the pedestrian crossing from the right to the left side. The driver should stop to allow the pedestrian to safely cross, as they are entering the vehicle's path and could result in a collision if not given right of way."}
{"id": "train_01242", "split": "train", "clip_key": "titan_clip_279_000468_movie", "source": {"subset": "titan", "scenario": "clip_279", "frame": "000468"}, "frames": ["titan_clip_279_000468_movie_t-3.jpg", "titan_clip_279_000468_movie_t-2.jpg", "titan_clip_279_000468_movie_t-1.jpg", "titan_clip_279_000468_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow two-way urban street extends ahead with smooth pavement, and orange cones line the left side to narrow the lane; traffic is light and slow with no vehicles immediately in front. Ahead in the middle of the road, a traffic officer in a reflective vest and cap walks toward the vehicle with a raised hand, directing it to stop to allow pedestrians to cross. On the right by the storefront, several pedestrians cluster at the curb, one stepping forward to cross under the officer's guidance. Farther ahead in the same lane, a person pushes a handcart away along the center of the street, occupying the path. A convex roadside mirror stands on the left.", "hazard_reasoning": "There is a traffic officer wearing a reflective vest and a cap and walking in the middle of the road towards the ego car to allow pedestrians to cross. Drivers should stop because the officer is directing pedestrians across the road and limited visibility around the curve increases collision risk."}
{"id": "train_01243", "split": "train", "clip_key": "2020-0225-102455_011151_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "011151"}, "frames": ["2020-0225-102455_011151_movie_t-3.jpg", "2020-0225-102455_011151_movie_t-2.jpg", "2020-0225-102455_011151_movie_t-1.jpg", "2020-0225-102455_011151_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to maintain safe distance", "environment_perception": "An urban multilane road with a curbside colored lane and a guardrail along the right is seen, the pavement dry and in good condition, and overall traffic is heavy and slow. A gray dump truck is stopped directly ahead in the ego lane due to congestion, holding the ego vehicle at a standstill. In the adjacent same-direction lanes to the right, a queue of cars creeps forward through a gentle right curve, limiting progress. No pedestrians or cyclists are visible, and there are no other apparent hazards or work zones.", "hazard_reasoning": "A gray truck is stopped in front of the ego car in the ego lane, because of traffic congestion. The truck's stopped position creates a rear-end collision risk, so the driver should stop to maintain a safe distance."}
{"id": "train_01244", "split": "train", "clip_key": "2020-0206-101736_040716_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "040716"}, "frames": ["2020-0206-101736_040716_movie_t-3.jpg", "2020-0206-101736_040716_movie_t-2.jpg", "2020-0206-101736_040716_movie_t-1.jpg", "2020-0206-101736_040716_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop promptly to avoid collision with stopped vehicle ahead.", "environment_perception": "An urban multi-lane road between mid-rise buildings has no physical median and smooth pavement; traffic in the ego direction is heavy and mostly stop-and-go while oncoming flow to the right is steady. A white sedan directly ahead in the ego lane is stopped due to congestion and is waiting to turn right, holding the ego vehicle. A queue of cars and small vans farther ahead in the same direction creeps forward and brakes intermittently, further constraining progress. Oncoming vehicles in the right-side lanes, including a silver minivan and a box truck, approach and pass without affecting the ego path.", "hazard_reasoning": "There is a white sedan stopped in the ego lane because of traffic congestion ahead and because it is waiting to turn right. Stop promptly to avoid collision with the stopped vehicle ahead."}
{"id": "train_01245", "split": "train", "clip_key": "titan_clip_1074_000276_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1074_000276_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1074_000276_movie_t-3_augB1.jpg", "titan_clip_1074_000276_movie_t-2_augB1.jpg", "titan_clip_1074_000276_movie_t-1_augB1.jpg", "titan_clip_1074_000276_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian controlling traffic.", "environment_perception": "A narrow urban two-way road with a double yellow centerline runs slightly uphill toward an underpass; the pavement is dry and intact, and traffic is light. Two work trucks stand along the right curb in the oncoming lane, creating a roadside work area that narrows that side. On the right near the centerline, a pedestrian in a yellow vest and helmet stands and directs traffic, controlling the flow and effectively setting the ego vehicle's pace. Another person waits by the trucks off the roadway, and no oncoming vehicles are visible.", "hazard_reasoning": "There is a pedestrian wearing a yellow vest and helmet, standing on the right side of the road, because they are controlling the traffic. They may signal or step into the lane unexpectedly, so the driver must remain alert and adjust speed as needed."}
{"id": "train_01246", "split": "train", "clip_key": "2020-0205-152530_050821_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "050821"}, "frames": ["2020-0205-152530_050821_movie_t-3.jpg", "2020-0205-152530_050821_movie_t-2.jpg", "2020-0205-152530_050821_movie_t-1.jpg", "2020-0205-152530_050821_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with four or more same-direction lanes and extensive painted channelization stretches ahead on smooth asphalt, and traffic flows at a moderate pace. A white light truck directly ahead in the ego lane slows, constraining the ego car's speed. A large box truck runs slightly ahead in the lane to the right and continues straight close to the ego vehicle's flank. Another small white truck proceeds in the lane to the left at a steady speed, remaining parallel to the ego car. Blue overhead guide signs direct toward Toyosu and other destinations and note a junction 180 m ahead.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. This decelerating vehicle reduces the distance available for braking and increases the risk of a rear-end collision, so the driver should slow down to maintain a safe following distance."}
{"id": "train_01247", "split": "train", "clip_key": "2020-0129-105040_098660_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "098660"}, "frames": ["2020-0129-105040_098660_movie_t-3.jpg", "2020-0129-105040_098660_movie_t-2.jpg", "2020-0129-105040_098660_movie_t-1.jpg", "2020-0129-105040_098660_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction runs straight, separated from oncoming traffic by a raised shrub median; the dry pavement is smooth and traffic is light. A black van drives ahead in the ego lane at a steady pace, directly setting the ego car's speed. To the left at the curb, a silver van is stopped near the lane edge. Farther ahead in the right lane, a white van proceeds in the same direction without changing lanes. Several pedestrians walk along the left sidewalk beside shops and leafless trees. Overhead directional signs are visible above the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01248", "split": "train", "clip_key": "titan_clip_699_000534_movie", "source": {"subset": "titan", "scenario": "clip_699", "frame": "000534"}, "frames": ["titan_clip_699_000534_movie_t-3.jpg", "titan_clip_699_000534_movie_t-2.jpg", "titan_clip_699_000534_movie_t-1.jpg", "titan_clip_699_000534_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "In an urban district, the ego vehicle proceeds along a very narrow two-way street with no centerline or median; the pavement looks smooth with a small raised grate, and traffic is light with only pedestrians visible. On the left edge beside a fenced work site, a person in a white shirt and floral shorts carrying a handbag walks away from the camera along the shoulder, close enough that they could step into the ego lane. Ahead on the right, two pedestrians walk away near the curb, one towing a suitcase, narrowing the usable lane and constraining pace. A bold stop marking is painted on the roadway ahead.", "hazard_reasoning": "There is a person wearing a white shirt, floral shorts, with a handbag, walking to the left side of the road away from the ego car. The pedestrian's proximity to the vehicle path could lead to an unexpected crossing, so the driver should slow down to avoid a collision."}
{"id": "train_01249", "split": "train", "clip_key": "titan_clip_119_000318_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_119_000318_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_119_000318_movie_t-3_augB1.jpg", "titan_clip_119_000318_movie_t-2_augB1.jpg", "titan_clip_119_000318_movie_t-1_augB1.jpg", "titan_clip_119_000318_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way carriageway, no median, smooth pavement, and light traffic; the ego vehicle proceeds on the left with parked cars and bicycles along both curbs. Ahead in the same direction, a white van sits near the center-left and creeps forward, limiting the ego car's speed on the narrow lane. Farther ahead in the middle of the road, two pedestrians in white shirts and black pants walk away from the ego car, occupying the travel lane because parked vehicles crowd the edges and there is little sidewalk, so they remain relevant to the ego path. A person stands by shopfronts on the right but stays off the roadway. No signals or unusual signs are apparent.", "hazard_reasoning": "There are two pedestrians, wearing a white shirt and black pants, walking away from the ego car in the middle of the road, because of the parked vehicles and no sidewalk. The driver should slow down to avoid a potential collision with pedestrians walking on the roadway, ensuring safety in this constrained space."}
{"id": "train_01250", "split": "train", "clip_key": "2020-0213-143552_048786_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "048786"}, "frames": ["2020-0213-143552_048786_movie_t-3.jpg", "2020-0213-143552_048786_movie_t-2.jpg", "2020-0213-143552_048786_movie_t-1.jpg", "2020-0213-143552_048786_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs beside a shrub median that divides oncoming traffic; the asphalt appears dry and even, and traffic is light to moderate. A white box truck drives ahead in the ego lane, moving away and limiting the forward view, matching the note that a white truck is driving away from the ego car. A white van travels slightly ahead to the left in the adjacent same-direction lane at a similar pace, loosely parallel to the truck. An overhead blue direction sign is visible above the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The truck ahead may brake suddenly or slow down, so the driver should follow at a safe distance."}
{"id": "train_01251", "split": "train", "clip_key": "2020-0129-105040_043482_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "043482"}, "frames": ["2020-0129-105040_043482_movie_t-3.jpg", "2020-0129-105040_043482_movie_t-2.jpg", "2020-0129-105040_043482_movie_t-1.jpg", "2020-0129-105040_043482_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for red light", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, the pavement dry and smooth, with a guardrail on the right; traffic is heavy and queued at a signal. A silver hatchback directly ahead in the ego lane is stopped for the red light and holds the ego vehicle. In the adjacent left lane, a white van and a large blue truck run alongside and slow to a stop in the same queue, constraining lane changes. Overhead traffic signals show red above the lanes. No oncoming traffic is adjacent, as a separated side road sits to the right behind the barrier.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, because of red traffic lights. The driver should stop now to avoid a collision and comply with the red signal."}
{"id": "train_01252", "split": "train", "clip_key": "titan_clip_1048_000090_movie", "source": {"subset": "titan", "scenario": "clip_1048", "frame": "000090"}, "frames": ["titan_clip_1048_000090_movie_t-3.jpg", "titan_clip_1048_000090_movie_t-2.jpg", "titan_clip_1048_000090_movie_t-1.jpg", "titan_clip_1048_000090_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single shared lane and smooth, slightly wet pavement stretches ahead, and traffic is light. Parked vans line the left while a metal railing with planters borders the right, narrowing the usable roadway. A pedestrian wearing a black shirt walks ahead in the middle of the road away from the ego vehicle, continuing straight and occupying the ego path, which constrains the car's pace. No other moving vehicles are visible nearby. A roadside sign on the right shows a 30 speed limit with a Zone 30 pedestrian symbol.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, walking in the middle of the road, away from the ego car. Since the pedestrian is directly ahead on the road, the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_01253", "split": "train", "clip_key": "2020-0227-153144_009063_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "009063"}, "frames": ["2020-0227-153144_009063_movie_t-3.jpg", "2020-0227-153144_009063_movie_t-2.jpg", "2020-0227-153144_009063_movie_t-1.jpg", "2020-0227-153144_009063_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian in the crosswalk", "environment_perception": "An urban two-way arterial with a raised median and a zebra crosswalk stretches ahead on smooth pavement; traffic is light in the ego direction and moderate on the oncoming side. Several pedestrians cross ahead at the crosswalk from the right to the left across the ego lane, including a person in a black coat who continues through and constrains the ego vehicle. Another pedestrian waits on the median refuge to the right, poised to enter the ego lane next. On the right-side carriageway, oncoming cars roll past the crosswalk at low speed and clear the junction. Overhead traffic signals mark a signalized intersection.", "hazard_reasoning": "There is a pedestrian wearing a black coat and crossing the street, from the right side to the left side, ahead at the crosswalk. The driver should yield to avoid a collision with the pedestrian who has the right of way."}
{"id": "train_01254", "split": "train", "clip_key": "2020-0204-103442_036903_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "036903"}, "frames": ["2020-0204-103442_036903_movie_t-3.jpg", "2020-0204-103442_036903_movie_t-2.jpg", "2020-0204-103442_036903_movie_t-1.jpg", "2020-0204-103442_036903_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated structure carries two same-direction lanes bordered by guardrails; the pavement is dry and smooth, and traffic is moderate with a developing slowdown ahead. A white box truck directly ahead in the ego lane slows due to congestion in front, constraining the ego vehicle's pace. Another white box truck in the adjacent right lane is slightly ahead and also decelerating, limiting an easy lane change. A short line of vehicles is visible farther ahead in both lanes, reinforcing the bottleneck. A red chevron on the left barrier marks a gentle curve.", "hazard_reasoning": "There is a white truck slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. This slowdown signals a buildup of slow or stopped vehicles ahead, so the driver should reduce speed to maintain a safe following distance and avoid a collision."}
{"id": "train_01255", "split": "train", "clip_key": "titan_clip_1372_000162_movie", "source": {"subset": "titan", "scenario": "clip_1372", "frame": "000162"}, "frames": ["titan_clip_1372_000162_movie_t-3.jpg", "titan_clip_1372_000162_movie_t-2.jpg", "titan_clip_1372_000162_movie_t-1.jpg", "titan_clip_1372_000162_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrian near the intersection", "environment_perception": "An urban street with a single narrow lane and no median stretches ahead through dense buildings; the pavement is patched, cones and barricades mark roadside works on the right, and there is no moving traffic in either direction. On the left at the near intersection, a pedestrian wearing a black T-shirt and black pants walks along the curb toward the corner and may enter the ego lane. Farther ahead on the right sidewalk, another pedestrian walks away parallel to the road and remains clear of the lane. Additional pedestrians linger near shops in the mid-distance without stepping into traffic. A No Entry sign faces the left side street, and the work zone slightly narrows the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a black T-shirt and black pants and walking near the intersection, from the left side. The driver should be cautious since the pedestrian may enter the lane unexpectedly near the intersection."}
{"id": "train_01256", "split": "train", "clip_key": "2020-0226-140503_063035_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "063035"}, "frames": ["2020-0226-140503_063035_movie_t-3.jpg", "2020-0226-140503_063035_movie_t-2.jpg", "2020-0226-140503_063035_movie_t-1.jpg", "2020-0226-140503_063035_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "The ego vehicle proceeds along a narrow urban street beside an elevated rail line, with a single marked lane, no median, and wet pavement; traffic is light with no vehicles ahead or oncoming as the road bends gently right toward a small side-street intersection. A pedestrian on the left sidewalk slightly ahead walks along the fence in the same direction and stays near the curb, not entering the roadway. On the right sidewalk ahead, several pedestrians move toward the intersection and parallel the ego path, and their proximity to the corner makes them the main potential interaction as the vehicle passes. No signals are visible; railings, planters, and buildings border the roadway, and the lane is clear of obstacles.", "hazard_reasoning": "No immediate hazards are present; the road is clear and driving conditions are stable, so the driver can maintain course."}
{"id": "train_01257", "split": "train", "clip_key": "2020-0226-101332_058421_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "058421"}, "frames": ["2020-0226-101332_058421_movie_t-3.jpg", "2020-0226-101332_058421_movie_t-2.jpg", "2020-0226-101332_058421_movie_t-1.jpg", "2020-0226-101332_058421_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning van", "environment_perception": "An urban, multi-lane signalized intersection with painted turn bays and no physical median lies ahead; the pavement looks wet and traffic is moderate. Opposite the ego vehicle, a white van in the oncoming left-turn lane makes a left turn into the road on the right, crossing the intersection. To its left, a white box truck in the oncoming through lane continues straight across the junction, occupying the crossing space. On the near right corner, a silver van on the cross street remains stopped at the line while a motor scooter edges forward by the curb, neither entering the ego lane. Overhead traffic signals and blue direction signs with right arrows are clearly visible.", "hazard_reasoning": "There is a white van making a left turn in the oncoming left turn lane, toward the road on the right. This turning van may cut across your lane, so be aware of its movement to prevent a collision."}
{"id": "train_01258", "split": "train", "clip_key": "titan_clip_76_000474_movie", "source": {"subset": "titan", "scenario": "clip_76", "frame": "000474"}, "frames": ["titan_clip_76_000474_movie_t-3.jpg", "titan_clip_76_000474_movie_t-2.jpg", "titan_clip_76_000474_movie_t-1.jpg", "titan_clip_76_000474_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van.", "environment_perception": "An urban narrow two-way street without a marked centerline has smooth asphalt and no median, and traffic is very light as the ego vehicle proceeds along the left side. To the right ahead, a white van is parked at the curb, remaining stationary and slightly intruding into the lane, reducing passing clearance. No other moving vehicles or pedestrians are visible nearby, and no oncoming traffic appears in view. Large stacked boxes and a metal roll cage sit on the left near a building entrance close to the curb, and dry leaves are scattered on the pavement, but the remaining roadway ahead looks clear.", "hazard_reasoning": "There is a white van parked on the right side of the road. The parked van reduces the usable lane width, so the driver should manoeuvre carefully to avoid collision."}
{"id": "train_01259", "split": "train", "clip_key": "2020-0212-102546_036454_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "036454"}, "frames": ["2020-0212-102546_036454_movie_t-3.jpg", "2020-0212-102546_036454_movie_t-2.jpg", "2020-0212-102546_036454_movie_t-1.jpg", "2020-0212-102546_036454_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane road curves right between high-rises, with an elevated expressway along the left. The pavement looks smooth and dry, and traffic is heavy and mostly stopped. A gray box truck directly ahead in the ego lane is stopped because congestion blocks the way, holding the ego vehicle. In the adjacent right lane slightly ahead, a tall white delivery truck inches forward in the queue, discouraging a merge. A silver car to the right alongside creeps forward beside the ego car, remaining close as part of the same slow-moving line.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid collision and maintain safe distance."}
{"id": "train_01260", "split": "train", "clip_key": "2020-0204-103442_001375_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "001375"}, "frames": ["2020-0204-103442_001375_movie_t-3.jpg", "2020-0204-103442_001375_movie_t-2.jpg", "2020-0204-103442_001375_movie_t-1.jpg", "2020-0204-103442_001375_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs between mid-rise buildings, with a smooth red left lane and a darker general-traffic lane to its right; traffic is moderate. A white sedan ahead in the ego lane slows as traffic compresses farther ahead, constraining the ego vehicle's pace. A gray box truck travels ahead in the adjacent right lane at a steady speed, moving slightly faster than the sedan. A smaller car continues farther ahead in the right lane within the flow and remains clear of the ego lane. Pedestrians walk along both sidewalks behind railings. An overhead electronic sign displays Japanese text, and the red lane shows 8-20 time markings indicating a restricted-use period.", "hazard_reasoning": "There is a white sedan slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The sedan's deceleration signals a buildup of vehicles ahead, so the driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01261", "split": "train", "clip_key": "2020-0210-101957_066920_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "066920"}, "frames": ["2020-0210-101957_066920_movie_t-3.jpg", "2020-0210-101957_066920_movie_t-2.jpg", "2020-0210-101957_066920_movie_t-1.jpg", "2020-0210-101957_066920_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban arterial with two lanes in the ego direction runs alongside a curb and shrubs; the pavement is dry and intact, and traffic is heavy with slow queues. A small white truck directly ahead in the ego lane is stopped due to congestion ahead, holding the ego vehicle. To the right, a black sedan slightly ahead in the adjacent lane is also stopped in the line, limiting any lane change. Farther ahead in that lane, a white hatchback inches forward. A blue overhead guide sign indicates a T-junction ahead.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, because of traffic congestion ahead. The vehicle ahead is halted due to slow-moving traffic, so you need to stop promptly to avoid a rear-end collision."}
{"id": "train_01262", "split": "train", "clip_key": "titan_clip_769_000432_movie", "source": {"subset": "titan", "scenario": "clip_769", "frame": "000432"}, "frames": ["titan_clip_769_000432_movie_t-3.jpg", "titan_clip_769_000432_movie_t-2.jpg", "titan_clip_769_000432_movie_t-1.jpg", "titan_clip_769_000432_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the stopped motorcycle.", "environment_perception": "An urban residential scene shows a very narrow two-way road without a centerline, smooth asphalt, and light traffic with no moving vehicles visible. The ego vehicle proceeds along the left side between close-set houses, walls, and vegetation. A black motorcycle is stopped on the left side of the road near a house, parked at the curb and partly in the roadway, narrowing the passage ahead. No oncoming or same-direction vehicles appear, and no notable traffic signals or signs are visible.", "hazard_reasoning": "There is a black motorcycle stopped on the left side of the road. The stopped motorcycle may obstruct your path or require you to change lanes, so be aware of its presence."}
{"id": "train_01263", "split": "train", "clip_key": "2020-0205-103411_000805_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "000805"}, "frames": ["2020-0205-103411_000805_movie_t-3.jpg", "2020-0205-103411_000805_movie_t-2.jpg", "2020-0205-103411_000805_movie_t-1.jpg", "2020-0205-103411_000805_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban street curves right beside construction fencing and guardrails, with dry pavement and a zebra crosswalk ahead; traffic is heavy and momentarily stopped. A black sedan directly ahead in the ego lane is stopped because the car in front of it has halted at the crosswalk, holding the ego vehicle. A red taxi ahead to the right also waits at the crossing, further constraining the lane's movement. Several pedestrians cross from right to left on the zebra crossing while others stand near the curb, and their presence keeps vehicles stationary. A pedestrian crossing sign is visible on a pole, and cones and barriers narrow the roadside.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane, because the car in front of it stopped at the crosswalk. The driver must stop to avoid colliding with the halted vehicle at the crosswalk."}
{"id": "train_01264", "split": "train", "clip_key": "titan_clip_804_000498_movie", "source": {"subset": "titan", "scenario": "clip_804", "frame": "000498"}, "frames": ["titan_clip_804_000498_movie_t-3.jpg", "titan_clip_804_000498_movie_t-2.jpg", "titan_clip_804_000498_movie_t-1.jpg", "titan_clip_804_000498_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane per direction and no median appears under bright sun and tree shade; the dry pavement looks smooth and traffic is light. An orange 30 marking is painted on the roadway. A large box truck is immediately ahead at the left curb, stationary with a person at its rear, occupying much of the ego lane and constraining progress. An oncoming car moves past in the opposing right-side lane, relevant because it travels alongside the obstructing truck. A pedestrian walks along the right sidewalk beside hedges, staying on the footway. No traffic signals or special controls are clearly visible.", "hazard_reasoning": "No immediate hazards are detected as traffic is light, the road conditions are good, and there are no vulnerable road users or signalized intersections requiring caution."}
{"id": "train_01265", "split": "train", "clip_key": "2020-0205-152530_041888_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "041888"}, "frames": ["2020-0205-152530_041888_movie_t-3.jpg", "2020-0205-152530_041888_movie_t-2.jpg", "2020-0205-152530_041888_movie_t-1.jpg", "2020-0205-152530_041888_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three lanes in each direction and smooth pavement carries moderate traffic toward a signalized intersection. A white box truck ahead in the ego lane slows toward the stop line because the traffic light ahead shows red, constraining the ego car's pace. To the right, a black car and other same-direction vehicles in adjacent lanes also decelerate toward the junction and prepare to stop. Oncoming traffic in the lanes to the far right continues through the intersection at a steady rate. Two pedestrians wait on the left sidewalk near the crosswalk without entering the roadway.", "hazard_reasoning": "There is a white truck slowing in front of the ego-car, in the ego lane, because of the red traffic light ahead on the road. The driver should slow down to maintain a safe distance and prepare to stop for the red light."}
{"id": "train_01266", "split": "train", "clip_key": "titan_clip_495_000108_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_495_000108_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_495_000108_movie_t-3_augB1.jpg", "titan_clip_495_000108_movie_t-2_augB1.jpg", "titan_clip_495_000108_movie_t-1_augB1.jpg", "titan_clip_495_000108_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-lane road with a solid centerline and smooth pavement runs between buildings and trees, bordered by metal railings, and traffic is light. Ahead in the ego lane, a pedestrian wearing blue pants and a reflective vest stands in the middle of the road directing traffic, controlling the ego vehicle's approach. Just beyond him, a white truck is stopped near the center of the roadway in the same direction, partially narrowing the path. The oncoming lane stays clear with no vehicles approaching. Overhead signs on a gantry include a posted speed limit of 40 and a red-bordered prohibition sign.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a reflective vest, standing in the middle of the road, directing traffic. The driver should stop because the pedestrian is directing traffic from the center of the road and could step into the vehicle's path, requiring immediate compliance to avoid collision."}
{"id": "train_01267", "split": "train", "clip_key": "2020-0129-105040_092010_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "092010"}, "frames": ["2020-0129-105040_092010_movie_t-3.jpg", "2020-0129-105040_092010_movie_t-2.jpg", "2020-0129-105040_092010_movie_t-1.jpg", "2020-0129-105040_092010_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in each direction runs straight past a landscaped median on smooth asphalt; traffic is moderate and queued at a signal. A white mini truck directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. In the adjacent left lane, a white sedan slightly ahead is also stopped, limiting an easy lane change. On the opposite side of the median, oncoming vehicles, including a red truck, move along independently of the ego path. Overhead traffic lights show a solid red for the ego approach.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of a red traffic light ahead. Stop to maintain a safe following distance and avoid collision."}
{"id": "train_01268", "split": "train", "clip_key": "2020-0220-102630_017936_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "017936"}, "frames": ["2020-0220-102630_017936_movie_t-3.jpg", "2020-0220-102630_017936_movie_t-2.jpg", "2020-0220-102630_017936_movie_t-1.jpg", "2020-0220-102630_017936_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes, no physical median, and dry asphalt carries heavy, stop-and-go traffic. A white sedan is stopped directly ahead in the ego lane because of congestion, holding the ego car at a standstill. To the right, a white van in the adjacent lane is also stopped alongside the ego car as part of the queue. Farther ahead in the same direction, a large box truck sits motionless among the lead vehicles, limiting flow. A 50 km/h speed limit sign is visible on the left.", "hazard_reasoning": "A white sedan is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid a rear-end collision with the halted vehicle in dense traffic."}
{"id": "train_01269", "split": "train", "clip_key": "2020-0203-114632_000588_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "000588"}, "frames": ["2020-0203-114632_000588_movie_t-3.jpg", "2020-0203-114632_000588_movie_t-2.jpg", "2020-0203-114632_000588_movie_t-1.jpg", "2020-0203-114632_000588_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of the crossing pedestrian", "environment_perception": "An urban two-way road with one lane each direction curves left toward a railway underpass; pavement appears smooth and dry, and traffic is light. A small white van far ahead in the ego lane continues under the bridge at a steady pace, loosely setting the flow. On the right sidewalk ahead at the pedestrian crossing, a pedestrian in a gray coat waits at the curb to cross and could enter the ego lane. Several other pedestrians line both sidewalks near the underpass, walking or waiting behind railings without stepping into the street. Orange cones sit along the left curb but do not intrude into the lane.", "hazard_reasoning": "There is a pedestrian wearing a gray coat and waiting to cross, on the right sidewalk, ahead at the pedestrian crossing. The driver should be aware because the pedestrian may step onto the road suddenly at the crosswalk, requiring caution."}
{"id": "train_01270", "split": "train", "clip_key": "2020-0228-102841_091215_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "091215"}, "frames": ["2020-0228-102841_091215_movie_t-3.jpg", "2020-0228-102841_091215_movie_t-2.jpg", "2020-0228-102841_091215_movie_t-1.jpg", "2020-0228-102841_091215_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way road with one lane each direction and no median passes between dense buildings; the pavement is clean and traffic is heavy and mostly stopped. A white sedan directly ahead in the ego lane has come to a halt due to congestion ahead, holding the ego car. Farther ahead in the same lane, a tall white van also waits in the queue, further constraining progress. In the oncoming lane to the right, a black taxi proceeds toward the camera, passing the stopped line at low speed with close spacing.", "hazard_reasoning": "There is a white sedan that has stopped in front of the ego car in the ego lane, due to traffic congestion ahead. The sudden halt indicates buildup of vehicles ahead, requiring the driver to stop to avoid collision and maintain a safe following distance."}
{"id": "train_01271", "split": "train", "clip_key": "2020-0228-102841_036543_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "036543"}, "frames": ["2020-0228-102841_036543_movie_t-3.jpg", "2020-0228-102841_036543_movie_t-2.jpg", "2020-0228-102841_036543_movie_t-1.jpg", "2020-0228-102841_036543_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision", "environment_perception": "A tree-lined urban arterial with at least two same-direction lanes and smooth pavement shows heavy, queued traffic with little movement. A black hatchback directly ahead in the ego lane is stopped because of congestion and blocks the ego vehicle's path. In the adjacent right lane a white SUV is stopped alongside slightly ahead, limiting space to the right of the ego lane. Farther ahead in the same lane a white delivery van remains stationary in the line of cars. An overhead sign shows a 50 speed limit.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane because of traffic congestion ahead. Traffic congestion has caused vehicles to halt abruptly, increasing the risk of a rear-end collision; slowing down will help maintain a safe following distance."}
{"id": "train_01272", "split": "train", "clip_key": "2020-0210-101957_012756_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "012756"}, "frames": ["2020-0210-101957_012756_movie_t-3.jpg", "2020-0210-101957_012756_movie_t-2.jpg", "2020-0210-101957_012756_movie_t-1.jpg", "2020-0210-101957_012756_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban, signalized intersection with multiple lanes and no median lies ahead, the pavement is smooth and traffic is light. A red van ahead in the ego lane drives away through the intersection, remaining in the same direction of travel and setting the immediate pace. To the right, a white minivan proceeds through the junction in the adjacent lane, moving parallel to the red van and not encroaching on the ego lane. Farther left beyond the junction, a small car approaches in the oncoming lane of the opposite direction, remaining well separated by the center line. Several pedestrians cluster on the left-side corner near the crosswalk, waiting on the sidewalk.", "hazard_reasoning": "There is a red van driving in the ego lane, away from the ego car. The van's position suggests it may change lanes or turn right, so following it helps anticipate its movements and maintain a safe distance."}
{"id": "train_01273", "split": "train", "clip_key": "titan_clip_569_000504_movie", "source": {"subset": "titan", "scenario": "clip_569", "frame": "000504"}, "frames": ["titan_clip_569_000504_movie_t-3.jpg", "titan_clip_569_000504_movie_t-2.jpg", "titan_clip_569_000504_movie_t-1.jpg", "titan_clip_569_000504_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on right side", "environment_perception": "An urban shopping street with a narrow shared roadway is paved with bricks and lined by shops, with no divider or lane markings; the surface looks clean and there are no moving vehicles, so the flow is pedestrian-dominated. A woman wearing a pink shirt and black pants, carrying a handbag, stands on the right side of the road near a storefront and could step into the path. From the left foreground, a person wheels a suitcase out from the curb and begins angling into the roadway, potentially crossing ahead. Farther ahead, two pedestrians walk away along the center of the street, occupying the travel space and constraining the vehicle's pace.", "hazard_reasoning": "There is a woman wearing a pink shirt and black pants, carrying a handbag, and standing on the right side of the road. Drivers should be aware of pedestrians standing near the roadway, as they may step into the path unexpectedly, requiring timely adjustments to avoid potential conflicts."}
{"id": "train_01274", "split": "train", "clip_key": "titan_clip_298_000504_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_298_000504_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_298_000504_movie_t-3_augB1.jpg", "titan_clip_298_000504_movie_t-2_augB1.jpg", "titan_clip_298_000504_movie_t-1_augB1.jpg", "titan_clip_298_000504_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban two-way street with one lane each direction and no median stretches ahead, the pavement smooth and traffic light as the ego-vehicle proceeds in the left lane. A cyclist wearing a cap and gray coat pushes her bicycle across from the left to the right directly in front of the ego-vehicle, moving slowly through the ego lane and constraining its pace. The opposing lane nearby shows no oncoming vehicles. Parked cars line the left curb in a small lot but stay outside the travel lane and do not interact.", "hazard_reasoning": "There is a female cyclist, wearing a cap and a gray coat, pushing her bike across the street from the left to the right side, directly in front of the ego-car. The cyclist is crossing directly in front of the vehicle, so the driver should carefully manoeuvre around her to avoid a collision."}
{"id": "train_01275", "split": "train", "clip_key": "titan_clip_952_000558_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_952_000558_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_952_000558_movie_t-3_augB1.jpg", "titan_clip_952_000558_movie_t-2_augB1.jpg", "titan_clip_952_000558_movie_t-1_augB1.jpg", "titan_clip_952_000558_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian ahead.", "environment_perception": "A narrow urban side street with no centerline and intact pavement shows light traffic in this two-way alley. On the right side ahead, a pedestrian in a white shirt and black pants walks toward the ego vehicle along the roadway, moving into the vehicle's path and constraining its pace. A white van is parked under a carport at the right-side lot entrance with its nose close to the lane, leaving limited clearance. A small cross street joins ahead, and a convex mirror on a pole marks the blind junction.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the right side of the road, towards the ego car. The pedestrian could step onto the road unexpectedly, so the driver should yield to avoid a collision."}
{"id": "train_01276", "split": "train", "clip_key": "titan_clip_1379_000438_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1379_000438_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1379_000438_movie_t-3_augB1.jpg", "titan_clip_1379_000438_movie_t-2_augB1.jpg", "titan_clip_1379_000438_movie_t-1_augB1.jpg", "titan_clip_1379_000438_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street runs beneath an elevated structure with no median and wet, patchy pavement; traffic is light and the lane is partially constricted by roadside works. Ahead near the ego lane, a pedestrian in a gray shirt crosses from the left to the right in front of the vehicle, moving into the path and prompting the ego car to slow. On the left, a large cement mixer truck is stopped partly in the lane with workers nearby, narrowing the roadway and constraining the ego's progress. Farther ahead in the same lane, two pedestrians walk away along the center of the street, remaining ahead of the ego vehicle and influencing its pace. Orange cones line the right edge and cluster around the truck, marking the temporary work zone.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, crossing the street in front of the ego car, from the left side to the right side. Because the pedestrian is entering your path, you should slow down to avoid a collision."}
{"id": "train_01277", "split": "train", "clip_key": "titan_clip_859_000300_movie", "source": {"subset": "titan", "scenario": "clip_859", "frame": "000300"}, "frames": ["titan_clip_859_000300_movie_t-3.jpg", "titan_clip_859_000300_movie_t-2.jpg", "titan_clip_859_000300_movie_t-1.jpg", "titan_clip_859_000300_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "be aware of the cyclist ahead", "environment_perception": "An urban residential two-way street with a single narrow lane and no median runs between close buildings; the asphalt is smooth and traffic is light. The road bends slightly right ahead, creating limited sight distance. An oncoming cyclist in a white shirt travels along the right edge toward the ego vehicle, using the roadway because there is no bicycle lane, and may pass close as the carriageway is narrow. A pedestrian is visible farther ahead near the left wall, walking along the edge without stepping into the lane. A round speed-limit sign stands on a pole on the left. Cardboard boxes and bags are stacked along the right curb and a few cones line the left, remaining outside the lane.", "hazard_reasoning": "There is a cyclist wearing a white shirt cycling on the right side of the road toward the ego car because there is no bicycle lane. The cyclist's proximity to the ego-vehicle's lane makes their path unpredictable, so the driver should maintain awareness to avoid potential collision."}
{"id": "train_01278", "split": "train", "clip_key": "2020-0131-135401_016007_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "016007"}, "frames": ["2020-0131-135401_016007_movie_t-3.jpg", "2020-0131-135401_016007_movie_t-2.jpg", "2020-0131-135401_016007_movie_t-1.jpg", "2020-0131-135401_016007_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane road without a physical median approaches a signalized intersection; the pavement is smooth and traffic is moderate, beginning to flow. A black van ahead in the ego lane starts to move because the traffic light ahead is green, setting the ego car's pace. In the adjacent right lane, a motorcyclist accelerates past the ego vehicle toward the intersection, traveling straight beside it. Farther ahead in the right lane, a white car also moves off with the queue, remaining parallel to the ego lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01279", "split": "train", "clip_key": "2020-0220-151845_048971_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "048971"}, "frames": ["2020-0220-151845_048971_movie_t-3.jpg", "2020-0220-151845_048971_movie_t-2.jpg", "2020-0220-151845_048971_movie_t-1.jpg", "2020-0220-151845_048971_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway with three same-direction lanes and dry, well-marked pavement; traffic is heavy and moves in stop-and-go waves. Ahead in the ego lane, a red flatbed truck with a yellow-covered load starts to move forward as the queue loosens, setting the ego car's pace. To the right, a silver kei van in the adjacent lane creeps ahead alongside, keeping its lane and limiting room for a rightward lane change. To the left, several vans queue tightly in the left lane, crawling and blocking that option. Overhead blue direction signs indicate routes toward Hachioji, Takaido, Hakozaki, and Shibuya.", "hazard_reasoning": "There is a red truck starting to move forward in front of the ego car, in the ego lane, because traffic ahead is moving. The driver should start moving promptly to maintain smooth traffic flow and avoid a collision if the truck continues moving."}
{"id": "train_01280", "split": "train", "clip_key": "titan_clip_911_000390_movie", "source": {"subset": "titan", "scenario": "clip_911", "frame": "000390"}, "frames": ["titan_clip_911_000390_movie_t-3.jpg", "titan_clip_911_000390_movie_t-2.jpg", "titan_clip_911_000390_movie_t-1.jpg", "titan_clip_911_000390_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "A narrow urban commercial street has a single shared lane with no median; the pavement is worn but intact, and vehicle flow is light while pedestrian activity is heavy. Ahead on the left, a pedestrian in a blue T-shirt walks toward the ego car, stepping out because a white van is stopped along the curb and occupying part of the lane. Farther ahead in the center, a cyclist approaches oncoming along the middle of the lane and is directly in the ego path. Other pedestrians ahead and to the right walk toward and along the roadway, edging near the lane and constraining the ego's pace. Bicycles and shop displays line both sides, narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a blue T-shirt, walking towards the ego car, because of a white van parked on the left side of the road. The pedestrian may step into the lane to bypass the parked van, so the driver should yield to allow safe crossing."}
{"id": "train_01281", "split": "train", "clip_key": "2020-0228-102841_023016_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "023016"}, "frames": ["2020-0228-102841_023016_movie_t-3.jpg", "2020-0228-102841_023016_movie_t-2.jpg", "2020-0228-102841_023016_movie_t-1.jpg", "2020-0228-102841_023016_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "An urban multi-lane signalized intersection with smooth pavement and moderate flow lies ahead, with several same-direction lanes splitting at the junction and no physical median. A white sedan directly in front of the ego car pulls away and turns right through the intersection under a green light, moving out of the ego lane. A beige hatchback slightly ahead in the adjacent lane to the left continues straight at a slow pace, loosely pacing the ego vehicle. On the right, a small white kei truck edges from the cross street toward the junction and may enter after the turn phase. A red heavy truck waits near the far-right corner.", "hazard_reasoning": "There is a white sedan driving away from the ego car, because of the green traffic light allowing it to turn right, in front of the ego car. Since it is turning right on green and will clear the path, start moving to maintain smooth traffic flow."}
{"id": "train_01282", "split": "train", "clip_key": "2020-0213-143552_004342_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "004342"}, "frames": ["2020-0213-143552_004342_movie_t-3.jpg", "2020-0213-143552_004342_movie_t-2.jpg", "2020-0213-143552_004342_movie_t-1.jpg", "2020-0213-143552_004342_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the parked truck ahead", "environment_perception": "An urban two-way arterial with two or more lanes per direction and a painted left-side bike lane has smooth pavement and no physical median, and traffic moves at a moderate, steady pace. A gray truck is parked ahead along the left curb, occupying the bike lane and narrowing the shoulder as the ego vehicle approaches. In the same direction, a line of white vans in the right lane continues forward steadily a short distance ahead, setting the pace. Farther ahead in the center-right lane, a boxy truck proceeds away while maintaining separation. Oncoming cars travel in the opposite lanes to the left of center markings and pass by without merging.", "hazard_reasoning": "There is gray truck parked on the left side of the road. The parked vehicle could obstruct the driver's path or suddenly pull out, so the driver should be cautious."}
{"id": "train_01283", "split": "train", "clip_key": "2020-0131-103016_085686_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "085686"}, "frames": ["2020-0131-103016_085686_movie_t-3.jpg", "2020-0131-103016_085686_movie_t-2.jpg", "2020-0131-103016_085686_movie_t-1.jpg", "2020-0131-103016_085686_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked truck ahead.", "environment_perception": "In a dense urban corridor, the ego drives on a divided arterial with two lanes in our direction and a barrier-separated oncoming carriageway to the right; the pavement is smooth and traffic is moderate and flowing. A small silver kei car ahead in the ego lane continues straight at a steady speed, setting the pace. A white minibus in the adjacent right lane moves past the ego and proceeds ahead in its lane, possibly merging later. Farther ahead along the left curb of the ego lane, a white truck is parked and intrudes into the lane, creating an obstruction.", "hazard_reasoning": "There is a white truck parked in the ego lane. The driver should be aware of the parked truck to avoid colliding with it."}
{"id": "train_01284", "split": "train", "clip_key": "titan_clip_200_000540_movie", "source": {"subset": "titan", "scenario": "clip_200", "frame": "000540"}, "frames": ["titan_clip_200_000540_movie_t-3.jpg", "titan_clip_200_000540_movie_t-2.jpg", "titan_clip_200_000540_movie_t-1.jpg", "titan_clip_200_000540_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around parked bicycles", "environment_perception": "A narrow urban two-way street with one lane each direction runs between tall buildings; there is no median, the pavement is in good condition, and no motor traffic is present. Ahead left near a restaurant, two pedestrians step out to the curb and walk along the edge close to the ego lane. Ahead right, a pedestrian in a light shirt walks toward the camera along the curb while staying on the sidewalk. Just ahead at the right curb, a person with an umbrella is stationary at the gutter. A no-parking sign on the left and a left-pointing arrow sign on the right wall are visible, and two bicycles are parked on the left side of the road.", "hazard_reasoning": "There are two bicycles, parked on the left side of the road. The driver should manoeuvre carefully around the bicycles to avoid collision."}
{"id": "train_01285", "split": "train", "clip_key": "titan_clip_867_000234_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_867_000234_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_867_000234_movie_t-3_augB1.jpg", "titan_clip_867_000234_movie_t-2_augB1.jpg", "titan_clip_867_000234_movie_t-1_augB1.jpg", "titan_clip_867_000234_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with brick paving and a single shared lane has no visible divider and light vehicle presence; movement is slow as pedestrians dominate. Ahead in the middle, a pedestrian in all black walks leftward toward the ego vehicle while going around a large truck parked on the left, so he may enter the lane. Slightly right of center farther ahead, another pedestrian in a white shirt walks toward the camera along the lane, likely to pass close to the ego path. At the left edge by the truck, a man looking at his phone walks forward toward the near side and could encroach on the path. A box truck is stopped along the left curb, narrowing the roadway and masking sightlines.", "hazard_reasoning": "There is a pedestrian walking in the middle of the road, wearing all black, toward the left side of the road and the ego car, because he is walking around a parked truck. The pedestrian could unexpectedly step into the vehicle's path as he navigates around the obstruction, so the driver should slow down to maintain safety."}
{"id": "train_01286", "split": "train", "clip_key": "2020-0205-152530_026678_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "026678"}, "frames": ["2020-0205-152530_026678_movie_t-3.jpg", "2020-0205-152530_026678_movie_t-2.jpg", "2020-0205-152530_026678_movie_t-1.jpg", "2020-0205-152530_026678_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with three same-direction lanes and smooth pavement; traffic is light to moderate and flows steadily. A gray van directly ahead in the ego lane continues at a constant speed and proceeds straight through a green signal, pacing the ego car. Slightly ahead in the lane to the left, a silver car travels parallel and remains beside the ego vehicle. At the cross street to the right, a few cars are stopped near the corner and stay clear of the ego lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01287", "split": "train", "clip_key": "2020-0220-151845_014417_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "014417"}, "frames": ["2020-0220-151845_014417_movie_t-3.jpg", "2020-0220-151845_014417_movie_t-2.jpg", "2020-0220-151845_014417_movie_t-1.jpg", "2020-0220-151845_014417_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban arterial with smooth pavement and red bus-lane sections has no physical median, and traffic is slow and heavy near an intersection beneath a pedestrian overpass. The ego vehicle travels in the leftmost lane with same-direction lanes to the right. Directly ahead in the ego lane, a black SUV slows because congestion extends forward, limiting the ego car's pace. In the adjacent right lane, a silver van runs slightly ahead and continues straight, restricting an easy lane change. Farther ahead in the right lane, a gray hatchback also slows into the queue, reinforcing the backup. Along the left sidewalk at the crosswalk, a large crowd of pedestrians waits behind the curb without entering the roadway.", "hazard_reasoning": "There is a black SUV slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to match the reduced speed and maintain a safe following distance to avoid a collision."}
{"id": "train_01288", "split": "train", "clip_key": "2020-0203-114632_005195_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005195"}, "frames": ["2020-0203-114632_005195_movie_t-3.jpg", "2020-0203-114632_005195_movie_t-2.jpg", "2020-0203-114632_005195_movie_t-1.jpg", "2020-0203-114632_005195_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming truck.", "environment_perception": "An urban two-way street with narrow lanes and a center line runs through low-rise shops, the pavement is good, and traffic is moderate but briefly constrained by roadside work ahead. In the oncoming lane to the right, a green city bus approaches slowly past the work area, occupying much of its lane. Behind the bus, a white truck drives toward the ego car in the oncoming lane, following the bus’s pace. A construction worker stands in the ego lane beside orange cones, signaling and managing the work zone, which keeps the ego vehicle stopped. A small work truck is parked ahead in the ego lane within the coned area, blocking the path.", "hazard_reasoning": "There is a white truck driving toward the ego car, in the oncoming lane. You should yield to the oncoming truck to avoid a potential head-on collision."}
{"id": "train_01289", "split": "train", "clip_key": "titan_clip_1204_000282_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1204_000282_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1204_000282_movie_t-3_augB1.jpg", "titan_clip_1204_000282_movie_t-2_augB1.jpg", "titan_clip_1204_000282_movie_t-1_augB1.jpg", "titan_clip_1204_000282_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane and no median curves ahead, the pavement smooth; roadworks on the right squeeze the lane with cones and a parked work van, and overall traffic is light. Ahead in the ego lane, a cyclist wearing a backpack and white shirt rides in the middle of the road away from the camera because the construction encroaches from the right, so the cyclist governs the ego vehicle's pace. To the left at the crosswalk, a pedestrian waits on the curb without stepping off. On the right shoulder, a worker stands beside the cones near the van. A pedestrian signal on the left shows red.", "hazard_reasoning": "There is a cyclist wearing a backpack and a white shirt, cycling in the middle of the road, away from the ego car, because of construction work on the right. The cyclist's path overlaps the ego-lane due to the blocked right side, so the driver must slow down to maintain a safe distance and avoid a collision."}
{"id": "train_01290", "split": "train", "clip_key": "2020-0129-105040_100446_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "100446"}, "frames": ["2020-0129-105040_100446_movie_t-3.jpg", "2020-0129-105040_100446_movie_t-2.jpg", "2020-0129-105040_100446_movie_t-1.jpg", "2020-0129-105040_100446_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction runs past shops, separated from oncoming traffic by a hedge median; the pavement is dry and traffic is light to moderate, easing near a work area. A white truck ahead in the ego lane drives away from the camera at steady speed, gently setting the pace. Slightly ahead to the left, another small white truck in the adjacent lane slows near the obstruction, constraining that lane. On the far left, a utility bucket truck is stopped with cones and a warning board, partially blocking the left lane. Overhead blue direction signs are present, and a round 50 speed-limit sign is visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01291", "split": "train", "clip_key": "2020-0203-154554_031862_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "031862"}, "frames": ["2020-0203-154554_031862_movie_t-3.jpg", "2020-0203-154554_031862_movie_t-2.jpg", "2020-0203-154554_031862_movie_t-1.jpg", "2020-0203-154554_031862_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated roadway with two same-direction lanes runs under viaduct structures, bounded by concrete barriers; the dry pavement curves gently right and traffic is light to moderate. A gray flatbed truck directly ahead in the left ego lane slows, limiting the ego car's pace. A white minivan in the adjacent right lane draws alongside then proceeds ahead, remaining in its lane as it passes the slowing truck. A small car farther ahead in the right lane continues away at steady speed.", "hazard_reasoning": "There is a gray truck slowing in the ego lane, in front of the ego car. Since the truck ahead is decelerating sharply, the driver should reduce speed to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01292", "split": "train", "clip_key": "2020-0225-145150_022775_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "022775"}, "frames": ["2020-0225-145150_022775_movie_t-3.jpg", "2020-0225-145150_022775_movie_t-2.jpg", "2020-0225-145150_022775_movie_t-1.jpg", "2020-0225-145150_022775_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three lanes in the ego direction runs straight on dry pavement, separated from oncoming traffic by a bollard median; traffic is moderate and moves smoothly beneath a pedestrian overpass with blue guide signs. A gray van ahead in the ego lane drives steadily away from the ego car, holding its lane and effectively setting the pace. To the left of the van, a motor scooter advances slightly faster, overtaking alongside and briefly limiting space for lane changes. In the opposite direction to the right of the median, several trucks and cars approach in their lanes without interacting with the ego path.", "hazard_reasoning": "There is a gray van driving in the ego lane away from the ego car. The van blocks the driver's view of the road ahead, so the driver should be cautious of unexpected obstacles or slowdowns."}
{"id": "train_01293", "split": "train", "clip_key": "2020-0228-102841_014150_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_014150_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_014150_movie_t-3_augB1.jpg", "2020-0228-102841_014150_movie_t-2_augB1.jpg", "2020-0228-102841_014150_movie_t-1_augB1.jpg", "2020-0228-102841_014150_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian carrying red box", "environment_perception": "An urban two-way street with one narrow lane in each direction and a painted chevron median runs between tall buildings; the asphalt is dry and traffic is light to moderate. A black sedan directly ahead in the ego lane moves at low speed and sets the ego vehicle's pace. On the left side near the curb, a pedestrian in blue overalls carrying a red box walks toward the ego car while loading a covered van parked on the left, bringing them close to the travel lane. Oncoming cars appear farther ahead in the right lane and continue smoothly. Several delivery vans and a small truck are parked along the left, slightly narrowing the ego lane.", "hazard_reasoning": "There is a pedestrian wearing blue overalls and carrying a red box, walking on the left side of the road, toward the ego car, because they are loading a van parked on the left side of the road. The driver should be aware that the pedestrian may step into the lane unexpectedly while loading the van and adjust speed accordingly."}
{"id": "train_01294", "split": "train", "clip_key": "2020-0227-153144_017074_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "017074"}, "frames": ["2020-0227-153144_017074_movie_t-3.jpg", "2020-0227-153144_017074_movie_t-2.jpg", "2020-0227-153144_017074_movie_t-1.jpg", "2020-0227-153144_017074_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial with two through lanes in the ego direction runs alongside a low planter median that separates oncoming traffic; the pavement is smooth and traffic is moderate and moving. A small white kei van travels ahead in the ego lane, accelerating gently from the intersection and setting the pace. A black hatchback ahead to the left moves right from the left lane into the ego lane in front of the ego car, merging into our path and becoming the immediate lead vehicle. A white van in the adjacent right lane proceeds alongside and slightly ahead, continuing straight without entering the ego lane. A 50 km/h speed limit sign is visible on the left. Several cars are stopped along the left curb on the red-colored lane, narrowing that side of the roadway.", "hazard_reasoning": "There is a black hatchback lane changing, in front of the ego car, from the left lane to the ego lane. Follow the vehicle ahead to maintain safe distance during its merge."}
{"id": "train_01295", "split": "train", "clip_key": "2020-0218-103119_024032_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "024032"}, "frames": ["2020-0218-103119_024032_movie_t-3.jpg", "2020-0218-103119_024032_movie_t-2.jpg", "2020-0218-103119_024032_movie_t-1.jpg", "2020-0218-103119_024032_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road runs between mid-rise buildings, with the ego vehicle in the left lane separated from oncoming traffic by flexible orange bollards; the pavement is smooth and traffic is moderate with brief queues. A white truck is stopped directly ahead in the ego lane because of traffic congestion ahead, holding the ego vehicle at a standstill. An oncoming white sedan travels past on the far side of the bollards at a steady speed, continuing straight without merging. A pedestrian walks along the left sidewalk by a storefront, remaining clear of the carriageway. Temporary barricades and work signs line the left sidewalk.", "hazard_reasoning": "There is a white semi truck stopped in front of the ego car because of traffic congestion ahead. The stopped truck indicates a hazard requiring you to stop promptly to avoid a rear-end collision in congested traffic."}
{"id": "train_01296", "split": "train", "clip_key": "titan_clip_723_000156_movie", "source": {"subset": "titan", "scenario": "clip_723", "frame": "000156"}, "frames": ["titan_clip_723_000156_movie_t-3.jpg", "titan_clip_723_000156_movie_t-2.jpg", "titan_clip_723_000156_movie_t-1.jpg", "titan_clip_723_000156_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "be aware of the parked sedan", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs straight under trees, bordered by a planted median on the right; the asphalt is dry and traffic is light. A black sedan is parked on the left side of the road just ahead in a marked bay, remaining stationary beside the ego lane and reducing lateral space. A silver van sits at the far left in the near foreground as the ego passes, staying out of the through lane. Farther ahead, a few same-direction cars proceed steadily, leaving a clear gap. Across the median to the right, oncoming trucks and cars travel the opposite way. Parking signage is posted along the left curb.", "hazard_reasoning": "There is a black sedan parked on the left side of the road. The parked sedan may restrict lane usage or require the driver to maneuver around it, so the driver should be aware of its presence."}
{"id": "train_01297", "split": "train", "clip_key": "titan_clip_818_000240_movie", "source": {"subset": "titan", "scenario": "clip_818", "frame": "000240"}, "frames": ["titan_clip_818_000240_movie_t-3.jpg", "titan_clip_818_000240_movie_t-2.jpg", "titan_clip_818_000240_movie_t-1.jpg", "titan_clip_818_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street runs between low-rise buildings, with no median and smooth pavement bearing a large 30 speed marking; traffic is light with no moving vehicles ahead or oncoming. Ahead on the left, a pedestrian in a white shirt and black pants carrying a backpack walks away along the curb, close to the ego lane but keeping to the roadside. A large van is parked along the left curb near the camera, and several parked bicycles and a vending area sit on the right, slightly narrowing the passage without blocking it. No traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a backpack, walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a collision as the pedestrian may change direction unexpectedly."}
{"id": "train_01298", "split": "train", "clip_key": "titan_clip_842_000396_movie", "source": {"subset": "titan", "scenario": "clip_842", "frame": "000396"}, "frames": ["titan_clip_842_000396_movie_t-3.jpg", "titan_clip_842_000396_movie_t-2.jpg", "titan_clip_842_000396_movie_t-1.jpg", "titan_clip_842_000396_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "be aware of cyclist movement", "environment_perception": "An urban street with mid-rise buildings carries light one-way traffic on two lanes with smooth dry pavement; the rightmost lane is red-painted and marked for a right turn. A cyclist wearing a backpack moves diagonally across in front of the ego car from the left toward the right side of the road, briefly occupying the ego lane and constraining the approach. Several pedestrians are on the left sidewalk near a shop entrance behind a green railing and remain off the roadway. A distant white car ahead in the same direction continues straight without affecting the ego vehicle. A blue guide sign on the left indicates a left turn in 150 m.", "hazard_reasoning": "A cyclist wearing a backpack is crossing in front of the ego car to the right side of the road. The cyclist may change direction unpredictably, so be aware of their movement."}
{"id": "train_01299", "split": "train", "clip_key": "titan_clip_938_000528_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_938_000528_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_938_000528_movie_t-3_augB1.jpg", "titan_clip_938_000528_movie_t-2_augB1.jpg", "titan_clip_938_000528_movie_t-1_augB1.jpg", "titan_clip_938_000528_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "An urban alley-like two-way street with a single narrow lane and no median runs past closed shopfronts; the pavement is worn but intact, and traffic is light with no same-direction vehicles visible. A cyclist approaches from ahead along the opposing lane near the right curb, riding steadily toward the camera and taking much of the available width, constraining the ego vehicle's path. A pedestrian on the near right walks alongside vending machines close to the curb, parallel to traffic and not crossing. Farther ahead on the left edge, another person stands by a storefront near the roadway. No traffic lights or notable signs are in view.", "hazard_reasoning": "There is a pedestrian wearing a plaid shirt, crossing the street in front of the ego car, from the left side to the right side. The pedestrian is entering the vehicle's path and poses a collision risk, so the driver should yield to allow safe passage."}
{"id": "train_01300", "split": "train", "clip_key": "titan_clip_518_000252_movie", "source": {"subset": "titan", "scenario": "clip_518", "frame": "000252"}, "frames": ["titan_clip_518_000252_movie_t-3.jpg", "titan_clip_518_000252_movie_t-2.jpg", "titan_clip_518_000252_movie_t-1.jpg", "titan_clip_518_000252_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist", "environment_perception": "A narrow urban two-way street with shops and apartments has no median and smooth pavement, and traffic is light with no motor vehicles nearby as the road gently bends left ahead. On the right edge close to the ego lane, a woman with a white umbrella walks forward along the curb, reducing lateral clearance. Farther ahead on the right side, a cyclist wearing a black vest rides toward the ego vehicle in the oncoming direction and may edge into the ego lane where the street narrows. Pedestrians along both sidewalks walk or wait near storefronts without entering the roadway, though several stand close to the curbs.", "hazard_reasoning": "There is a cyclist wearing a black vest and cycling on the right side of the road, toward the ego car. The cyclist may cross the vehicle's path unexpectedly, so you should remain cautious and prepared to adjust speed or direction."}
{"id": "train_01301", "split": "train", "clip_key": "titan_clip_689_000324_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_689_000324_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_689_000324_movie_t-3_augB1.jpg", "titan_clip_689_000324_movie_t-2_augB1.jpg", "titan_clip_689_000324_movie_t-1_augB1.jpg", "titan_clip_689_000324_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with an undivided roadway and no centerline runs between shops; the pavement is dry and intact, and vehicular traffic is light with no oncoming cars visible. Ahead in the middle of the road, a pedestrian wearing a black shirt and a backpack walks away from the ego car, occupying the lane and constraining pace. To the right near the storefronts, another pedestrian walks toward the camera along the curb and may step into the lane. Farther ahead near the left edge, a person continues along the side of the roadway without entering the lane. Shop signs and cones protrude into the roadway, narrowing usable space.", "hazard_reasoning": "A pedestrian wearing a black shirt and backpack is walking in the middle of the road, away from the ego car. The pedestrian's position in the travel lane presents a collision hazard, so the driver should slow down to maintain a safe reaction distance."}
{"id": "train_01302", "split": "train", "clip_key": "titan_clip_1181_000018_movie", "source": {"subset": "titan", "scenario": "clip_1181", "frame": "000018"}, "frames": ["titan_clip_1181_000018_movie_t-3.jpg", "titan_clip_1181_000018_movie_t-2.jpg", "titan_clip_1181_000018_movie_t-1.jpg", "titan_clip_1181_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "An urban two-way neighborhood street with a single narrow lane each way, no median, and worn asphalt shows light vehicle activity while the oncoming lane to the right is mostly clear and parked vehicles line the left. A cap-wearing pedestrian stands ahead on the left edge beside a parked white car, lingering at the roadway and potentially stepping into the ego lane. Another pedestrian is in the lane further ahead near the center, walking toward the ego vehicle and briefly obstructing its path. A bicyclist ahead-right rolls slowly along the curb near a driveway and may merge into the travel lane. Parked vans and cars on the left constrict usable lane width.", "hazard_reasoning": "There is a pedestrian wearing a cap, standing on the left side of the road, in front of the ego car. Carefully manoeuvre around the pedestrian to avoid collision."}
{"id": "train_01303", "split": "train", "clip_key": "titan_clip_690_000186_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_690_000186_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_690_000186_movie_t-3_augB1.jpg", "titan_clip_690_000186_movie_t-2_augB1.jpg", "titan_clip_690_000186_movie_t-1_augB1.jpg", "titan_clip_690_000186_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban commercial street with shops lines both sides forms a two-way road without a median, the asphalt appears smooth and vehicular traffic is light. Ahead on the right, a pedestrian in a blue shirt and black pants pushes a trolley toward the ego vehicle along the roadway where there is no sidewalk, moving close to the ego lane. At the right edge in the foreground, another pedestrian walks toward the camera inside the white edge line, reducing available space. On the left by the storefronts, a pedestrian walks along the curb in the same direction as the ego, staying near a parked bicycle. A blue right-pointing arrow sign is posted on the left building facade.", "hazard_reasoning": "There's a pedestrian wearing a blue shirt, black pants, and pushing a trolley, walking on the right side of the road toward the ego car, because there is no sidewalk. Therefore, the driver should manoeuvre carefully around the pedestrian to avoid collision."}
{"id": "train_01304", "split": "train", "clip_key": "titan_clip_1151_000414_movie", "source": {"subset": "titan", "scenario": "clip_1151", "frame": "000414"}, "frames": ["titan_clip_1151_000414_movie_t-3.jpg", "titan_clip_1151_000414_movie_t-2.jpg", "titan_clip_1151_000414_movie_t-1.jpg", "titan_clip_1151_000414_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with block-paved surface curves left, lacking a centerline or median, and traffic is light and slow. A pedestrian in yellow pants carrying an umbrella crosses ahead mid-block from right to left toward the near left side, moving through the vehicle's path. A small flatbed truck farther ahead in the same direction proceeds slowly near the center of the roadway and sets the pace. Another pedestrian with an umbrella stands at the right curb by a storefront, close to the carriageway but stationary. A white van is parked along the left edge near the camera, narrowing the lane.", "hazard_reasoning": "There is a pedestrian wearing yellow pants and carrying an umbrella, crossing in the middle of the road to the left side of the road. The driver should slow down because the pedestrian's unpredictable movement in the travel lane increases collision risk."}
{"id": "train_01305", "split": "train", "clip_key": "2020-0207-151349_088058_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "088058"}, "frames": ["2020-0207-151349_088058_movie_t-3.jpg", "2020-0207-151349_088058_movie_t-2.jpg", "2020-0207-151349_088058_movie_t-1.jpg", "2020-0207-151349_088058_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban multilane arterial approaches a signalized intersection, the pavement clean and dry, with moderate overall traffic and steady oncoming flow beyond the junction. A black motorcycle is stopped directly ahead in the ego lane at the red light, holding the ego vehicle at the stop line. Two bicyclists cross the crosswalk from right to left in front of the stopped traffic, moving through the ego path while the light remains red. Several pedestrians also walk across the crosswalk ahead, finishing their crossing before vehicles can proceed. The traffic signal facing the ego direction shows red.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego car, in the ego lane, because of a red traffic light. The motorcycle's sudden stop at the red light requires you to stop promptly to avoid a rear-end collision."}
{"id": "train_01306", "split": "train", "clip_key": "titan_clip_498_000228_movie", "source": {"subset": "titan", "scenario": "clip_498", "frame": "000228"}, "frames": ["titan_clip_498_000228_movie_t-3.jpg", "titan_clip_498_000228_movie_t-2.jpg", "titan_clip_498_000228_movie_t-1.jpg", "titan_clip_498_000228_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of offloading van.", "environment_perception": "An urban two-way street with cobblestone-like pavement and no median appears, and traffic is light as the ego vehicle proceeds in the left lane over a patched surface. A silver van is parked along the left curb just ahead with its rear open, being offloaded, and it slightly encroaches into the travel lane, reducing clearance. Two pedestrians on the left sidewalk near the van stand and walk by the curb as they attend to the unloading, close to the lane and the ego path. Farther ahead in the same direction, a small dark car travels away at low speed. No oncoming traffic is close. A no-parking sign is posted on the left, and an orange 30 speed marking is painted on the road. Cones line the right sidewalk.", "hazard_reasoning": "There is a silver van, that has been parked, on the left side of the road, because it is being offloaded. Be cautious of the offloading activity as it may cause unexpected pedestrian movement around the vehicle."}
{"id": "train_01307", "split": "train", "clip_key": "2020-0228-102841_092677_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "092677"}, "frames": ["2020-0228-102841_092677_movie_t-3.jpg", "2020-0228-102841_092677_movie_t-2.jpg", "2020-0228-102841_092677_movie_t-1.jpg", "2020-0228-102841_092677_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with one lane each direction runs between closely spaced buildings; the pavement is smooth but confined by a left-side railing, and traffic is heavy and momentarily stopped. A white sedan directly ahead in the ego left-side lane is stopped because of congestion ahead, holding the ego vehicle at a standstill. Farther ahead in the same lane, a white van waits in the queue and further limits forward movement. No oncoming vehicles pass in the opposite lane during the clip. No salient traffic signals or speed signs are visible. A scooter and other small items are parked along the right curb, narrowing the shoulder but remaining outside the travel lanes.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle and anticipate slowing traffic."}
{"id": "train_01308", "split": "train", "clip_key": "2020-0131-135401_062210_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "062210"}, "frames": ["2020-0131-135401_062210_movie_t-3.jpg", "2020-0131-135401_062210_movie_t-2.jpg", "2020-0131-135401_062210_movie_t-1.jpg", "2020-0131-135401_062210_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with two lanes in each direction and a painted double line median stretches ahead, the asphalt smooth and dry with moderate, slightly slowing flow. A white van ahead in the ego lane decelerates due to congestion forming farther up the lane, directly constraining the ego car's pace. To the right, a gray minivan in the adjacent same-direction lane continues forward slightly faster and just ahead, limiting an immediate merge to pass. Farther right across the center lines, oncoming cars move steadily in their lanes and remain separated, posing no immediate interaction. No signals or unusual signs are prominent, and no pedestrians or cyclists appear near the crosswalks or curbs.", "hazard_reasoning": "There's a white van slowing down in front of the ego car, in the ego lane, due to traffic congestion ahead. The driver should slow down to maintain a safe following distance and reduce collision risk."}
{"id": "train_01309", "split": "train", "clip_key": "2020-0203-114632_006332_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "006332"}, "frames": ["2020-0203-114632_006332_movie_t-3.jpg", "2020-0203-114632_006332_movie_t-2.jpg", "2020-0203-114632_006332_movie_t-1.jpg", "2020-0203-114632_006332_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van.", "environment_perception": "A narrow urban two-lane two-way road with a solid double yellow centerline leads to a signalized intersection; the pavement is dry and traffic is light, slowing near the stop line. A gray van ahead in the ego lane is stopped because the traffic light is red, holding the ego vehicle. On the left curb just ahead, a dark van with its rear doors open is parked partly in the lane, reducing clearance beside the ego path. To the right near the intersection, several pedestrians walk and wait along the sidewalk near the crosswalk, ready to cross when the signal changes.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, in the ego lane, because of a red traffic light. Since the van is halted at the red light in the same lane, the driver needs to manoeuvre carefully around it to maintain safe spacing and avoid a collision."}
{"id": "train_01310", "split": "train", "clip_key": "titan_clip_1387_000204_movie", "source": {"subset": "titan", "scenario": "clip_1387", "frame": "000204"}, "frames": ["titan_clip_1387_000204_movie_t-3.jpg", "titan_clip_1387_000204_movie_t-2.jpg", "titan_clip_1387_000204_movie_t-1.jpg", "titan_clip_1387_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with no centerline and worn asphalt shows light traffic; temporary barriers line the right curb and an overpass is visible ahead. A silver station wagon is parked along the left edge, encroaching into the travel space and narrowing the passage. A pedestrian in a gray shirt walks toward the ego vehicle along the left side, moving around the parked car and drifting near the lane, which makes them relevant to the ego path. Another pedestrian on the right side walks toward the camera near the curb inside the coned corridor and remains clear of the lane. A bicycle is parked against the right wall.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and walking on the left side of the road, towards the ego car, because of the parked vehicle. The pedestrian is approaching due to the parked car blocking the sidewalk, so you should carefully manoeuvre around them to avoid collision."}
{"id": "train_01311", "split": "train", "clip_key": "2020-0203-114632_024979_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "024979"}, "frames": ["2020-0203-114632_024979_movie_t-3.jpg", "2020-0203-114632_024979_movie_t-2.jpg", "2020-0203-114632_024979_movie_t-1.jpg", "2020-0203-114632_024979_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane per direction runs under an arched overpass, divided by flexible bollards and smooth, freshly paved asphalt, with light traffic throughout. On the left edge just ahead, a silver box truck is parked at the curb, stationary and narrowing the ego lane as we approach. Far ahead in the same lane near the bridge, a white bus proceeds straight at a modest speed, moving away and lightly setting the pace. The opposite, right-side lane beyond the bollards remains largely clear of oncoming vehicles. The overpass and roadside trees create intermittent shade but no obstruction.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01312", "split": "train", "clip_key": "2020-0205-103411_010656_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-103411_010656_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-103411_010656_movie_t-3_augB1.jpg", "2020-0205-103411_010656_movie_t-2_augB1.jpg", "2020-0205-103411_010656_movie_t-1_augB1.jpg", "2020-0205-103411_010656_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing", "environment_perception": "A two-way urban street with one lane per direction approaches a signalized intersection, the pavement smooth and traffic light overall. A pedestrian in a black coat is ahead in the middle of the road, walking toward the right side as they cross, momentarily occupying the ego vehicle's path. A blue flatbed truck stands at the right corner of the cross street, slightly nosed toward the intersection as if waiting to enter, posing a possible interruption to the ego lane. Farther ahead, a few oncoming cars in the right-side lanes proceed straight through the junction. Overhead signals and prominent zebra crossings are visible, with no median beyond painted center markings and no unusual obstacles.", "hazard_reasoning": "There is a pedestrian wearing a black coat, crossing the street, and walking in the middle of the road, toward the right side. The pedestrian's position in the lane creates a collision risk, so the driver should remain vigilant and ready to adjust speed."}
{"id": "train_01313", "split": "train", "clip_key": "2020-0220-102630_016663_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "016663"}, "frames": ["2020-0220-102630_016663_movie_t-3.jpg", "2020-0220-102630_016663_movie_t-2.jpg", "2020-0220-102630_016663_movie_t-1.jpg", "2020-0220-102630_016663_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth asphalt runs between mid-rise buildings, with a fence along the left curb and no visible median; traffic is heavy and largely stopped. The ego vehicle follows a white sedan directly ahead in the left lane that is stopped because of traffic congestion ahead, holding the lane. To the right, a small flatbed truck is halted in the adjacent same-direction lane beside the ego car, limiting room to merge. Farther ahead across both lanes, several trucks and vans, including a tall box truck in the left lane, queue tightly and inch forward, forming the bottleneck. No oncoming traffic or signals are visible.", "hazard_reasoning": "There is a white sedan stopped in the ego lane because of traffic congestion ahead. The sudden stop requires the driver to brake and stop promptly to maintain a safe following distance and avoid a rear-end collision under these congested conditions."}
{"id": "train_01314", "split": "train", "clip_key": "2020-0131-135401_037967_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "037967"}, "frames": ["2020-0131-135401_037967_movie_t-3.jpg", "2020-0131-135401_037967_movie_t-2.jpg", "2020-0131-135401_037967_movie_t-1.jpg", "2020-0131-135401_037967_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with two lanes in the ego direction and smooth pavement approaches a signalized intersection, with light to moderate traffic queued at the stop line. A white car is stopped directly ahead in the ego lane for the red light, holding the ego vehicle. A red car slightly ahead in the adjacent right lane is also stationary for the same signal, forming a short parallel queue. Several pedestrians move along and pause on the left sidewalk near the crosswalk but do not enter the roadway. The overhead signal shows red for the ego approach, and roadside signs warn of a school route and pedestrian crossing.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe following distance and obey the traffic signal."}
{"id": "train_01315", "split": "train", "clip_key": "titan_clip_609_000252_movie", "source": {"subset": "titan", "scenario": "clip_609", "frame": "000252"}, "frames": ["titan_clip_609_000252_movie_t-3.jpg", "titan_clip_609_000252_movie_t-2.jpg", "titan_clip_609_000252_movie_t-1.jpg", "titan_clip_609_000252_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street with stone-paved surface runs between buildings, with no median and a single lane in each direction; traffic is light and mostly static, with many vehicles parked along the left curb. A pedestrian wearing black pants and a backpack crosses ahead from the left to the right, moving across the ego vehicle's path. A white van is parked close on the left foreground, protruding slightly and narrowing the lane. Farther ahead several blue trucks remain parked along the left side, keeping the usable lane tight but passable. No traffic signals or speed signs are evident, and no moving same-direction or oncoming vehicles appear.", "hazard_reasoning": "There is a pedestrian wearing black pants and a backpack crossing the street in front of the ego car, from the left to the right side of the road. The pedestrian is moving into the vehicle's path and may be obscured by the parked truck, so the driver should slow down to safely yield and avoid a collision."}
{"id": "train_01316", "split": "train", "clip_key": "titan_clip_132_000030_movie", "source": {"subset": "titan", "scenario": "clip_132", "frame": "000030"}, "frames": ["titan_clip_132_000030_movie_t-3.jpg", "titan_clip_132_000030_movie_t-2.jpg", "titan_clip_132_000030_movie_t-1.jpg", "titan_clip_132_000030_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with a narrow two-way carriageway and brick paving shows light traffic; there is no median and the surface looks smooth. Ahead in the center of the lane, a pedestrian in white pants stands holding a handbag directly in front of the ego vehicle, momentarily blocking the path. On the left near the shopfronts, another pedestrian with an umbrella walks forward along the curb, remaining near the edge but close to the travel lane. Far ahead, a black van approaches in the opposite direction near the right side and slows beside a few cones, reducing the available passing space. A parking sign on the right indicates a garage entrance.", "hazard_reasoning": "There is a pedestrian wearing white pants, carrying a handbag, and standing, in the middle of the road, in front of the ego-car. The driver should be prepared to adjust the vehicle's path to avoid a potential collision with this pedestrian."}
{"id": "train_01317", "split": "train", "clip_key": "2020-0210-101957_055846_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "055846"}, "frames": ["2020-0210-101957_055846_movie_t-3.jpg", "2020-0210-101957_055846_movie_t-2.jpg", "2020-0210-101957_055846_movie_t-1.jpg", "2020-0210-101957_055846_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated two-way road with one lane each way curves right between concrete sound barriers; the pavement is dry and smooth and traffic is light. A black sedan directly ahead in the ego lane slows because a vehicle farther ahead in the same lane is slowing, which constrains the ego car's pace. An oncoming white mini-van travels in the opposite lane along the bend and passes by while maintaining its line. The high barriers and the right-hand curve limit forward visibility, with no salient signals or signs visible.", "hazard_reasoning": "There is a black sedan slowing down in front of the ego car because of a slowing vehicle ahead in the ego lane. To avoid a potential rear-end collision, the driver should slow down and maintain a safe distance behind the sedan."}
{"id": "train_01318", "split": "train", "clip_key": "2020-0206-101736_007802_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "007802"}, "frames": ["2020-0206-101736_007802_movie_t-3.jpg", "2020-0206-101736_007802_movie_t-2.jpg", "2020-0206-101736_007802_movie_t-1.jpg", "2020-0206-101736_007802_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way residential street with one narrow lane in each direction runs between apartments, bordered by metal railings, with smooth pavement and light traffic; there is no median, only a colored strip in the center. An oncoming white sedan approaches in the opposing lane at a steady speed and continues straight past, remaining in its lane and not affecting the ego path. A pedestrian ahead on the left sidewalk walks away from the camera beside the railing, staying off the roadway. No salient signals or work zones are visible.", "hazard_reasoning": "There are no potential hazards in this clear, straight road scenario, so no driver warning is necessary."}
{"id": "train_01319", "split": "train", "clip_key": "2020-0127-132751_102509_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "102509"}, "frames": ["2020-0127-132751_102509_movie_t-3.jpg", "2020-0127-132751_102509_movie_t-2.jpg", "2020-0127-132751_102509_movie_t-1.jpg", "2020-0127-132751_102509_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with a solid yellow centerline and intact pavement carries light, steady traffic. Ahead in the ego lane, a gray van slows with brake lights on, constraining the ego vehicle's pace as it approaches a signalized crosswalk. On the right by the crosswalk, a pedestrian stands at the curb and another person with a bicycle lingers on the sidewalk, both close to the potential crossing path. The oncoming lane remains clear, and no parked vehicles or obstacles block the roadway.", "hazard_reasoning": "There is a gray van slowing in the ego lane. You should slow down to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_01320", "split": "train", "clip_key": "2020-0129-105040_020005_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "020005"}, "frames": ["2020-0129-105040_020005_movie_t-3.jpg", "2020-0129-105040_020005_movie_t-2.jpg", "2020-0129-105040_020005_movie_t-1.jpg", "2020-0129-105040_020005_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "A wide multi-lane urban avenue with smooth dry pavement carries moderate same-direction traffic toward a downtown intersection. To the near right front, a white hatchback changes left across the ego lane into the left lane, briefly occupying the ego vehicle's path as it merges ahead. Directly ahead, a small white car proceeds straight in the ego lane at a steady speed, setting the ego car's following distance. Farther ahead, two large trucks in the center lanes roll slowly toward the junction, forming a short queue that influences overall pace.", "hazard_reasoning": "There is a white hatchback lane changing in front of the ego car, from the ego lane to the left lane. The unexpected lane change could lead to a collision if the driver does not adjust speed or follow safely under this situation."}
{"id": "train_01321", "split": "train", "clip_key": "2020-0129-144857_060835_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "060835"}, "frames": ["2020-0129-144857_060835_movie_t-3.jpg", "2020-0129-144857_060835_movie_t-2.jpg", "2020-0129-144857_060835_movie_t-1.jpg", "2020-0129-144857_060835_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated divided road with sound barriers and a narrow raised median climbs gently; pavement is smooth. Traffic is heavy in the left same-direction lanes while the ego vehicle's rightmost lane moves but slows with the grade. A silver sedan ahead in the ego lane slows because of congestion and effectively sets the ego car's pace. To the left, a queue of trucks and vans in adjacent same-direction lanes crawls or stops, forming the bottleneck that compresses flow. On the right, a small oncoming truck travels downhill on the opposite carriageway beyond the median with no interaction.", "hazard_reasoning": "There is a silver sedan slowing in front of the ego car in the ego lane, because of traffic congestion. The sedan's reduced speed indicates a queue ahead, so you should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_01322", "split": "train", "clip_key": "2020-0217-110854_006083_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "006083"}, "frames": ["2020-0217-110854_006083_movie_t-3.jpg", "2020-0217-110854_006083_movie_t-2.jpg", "2020-0217-110854_006083_movie_t-1.jpg", "2020-0217-110854_006083_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street approaches a small intersection with no median, smooth pavement, and light traffic, with the ego vehicle traveling in the left lane. A white sedan directly ahead in the ego lane slows and waits to turn left because a garbage truck in front is turning into the left side street, constraining the lane. The garbage truck ahead left angles into the side street at low speed and temporarily blocks part of the crosswalk. Pedestrians on the left sidewalk near the corner stand by beside a parked bicycle and do not step into the roadway. No oncoming vehicles are close.", "hazard_reasoning": "There is a white sedan slowing and waiting to turn left, in the ego lane, because there is a garbage truck turning ahead. Since the white sedan is decelerating unexpectedly in front of the ego-vehicle, the driver should slow down to maintain a safe distance and avoid a collision under this situation."}
{"id": "train_01323", "split": "train", "clip_key": "titan_clip_1368_000282_movie", "source": {"subset": "titan", "scenario": "clip_1368", "frame": "000282"}, "frames": ["titan_clip_1368_000282_movie_t-3.jpg", "titan_clip_1368_000282_movie_t-2.jpg", "titan_clip_1368_000282_movie_t-1.jpg", "titan_clip_1368_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "An urban neighborhood is shown on a narrow two-way road without a centerline, bordered by buildings on the left and a walled walkway with green guardrails on the right; the pavement is smooth and motor traffic is light to nonexistent. On the left edge ahead, a pedestrian walks away from the ego vehicle in the carriageway because there is no sidewalk, moving within the driving space and likely to constrain speed. Two pedestrians in the left foreground walk toward the ego car along the curb line, reducing lateral clearance. On the right side behind the guardrail, a pedestrian walks toward the camera, largely separated from the lane.", "hazard_reasoning": "There is a pedestrian walking away from the ego car, on the left side of the road, because there is no sidewalk. The pedestrian is forced to walk close to the traffic lane, requiring careful manoeuvring to maintain safe clearance."}
{"id": "train_01324", "split": "train", "clip_key": "titan_clip_1384_000234_movie", "source": {"subset": "titan", "scenario": "clip_1384", "frame": "000234"}, "frames": ["titan_clip_1384_000234_movie_t-3.jpg", "titan_clip_1384_000234_movie_t-2.jpg", "titan_clip_1384_000234_movie_t-1.jpg", "titan_clip_1384_000234_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban side street with tall storefront buildings runs straight ahead along a single narrow lane without a centerline; the asphalt appears slightly wet and traffic is light. Several vans are parked along the left curb, narrowing the passage. On the right edge near the camera, a pedestrian wearing a white shirt and carrying a handbag walks toward the ego car beside the curb and may enter the lane. Ahead near the middle of the road, a cyclist moves away in the same direction at low speed, occupying the path ahead. Bicycles and shopfront tarps on the right add roadside clutter but remain stationary.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and walking, towards the ego car, on the right side of the road. The pedestrian may cross into the vehicle's path unexpectedly, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_01325", "split": "train", "clip_key": "2020-0218-151547_024353_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "024353"}, "frames": ["2020-0218-151547_024353_movie_t-3.jpg", "2020-0218-151547_024353_movie_t-2.jpg", "2020-0218-151547_024353_movie_t-1.jpg", "2020-0218-151547_024353_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial runs beneath an elevated expressway, with two same-direction lanes bordered by guardrails and storefronts; the pavement is dry and intact, and traffic is heavy and stop-and-go. Directly ahead in the ego lane, a silver hatchback is stopped because of congestion and holds the ego vehicle in place. In the adjacent right lane, a black minivan slightly ahead creeps forward in a queue, and the line of cars beside it limits chances to pass. Farther ahead, more vehicles bunch up under the viaduct, advancing only intermittently. An overhead blue guide sign indicates Ohara is 2 km ahead.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, because of traffic congestion ahead. Since the hatchback is stationary due to congestion, the driver needs to stop to avoid a rear-end collision."}
{"id": "train_01326", "split": "train", "clip_key": "2020-0203-154554_033014_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "033014"}, "frames": ["2020-0203-154554_033014_movie_t-3.jpg", "2020-0203-154554_033014_movie_t-2.jpg", "2020-0203-154554_033014_movie_t-1.jpg", "2020-0203-154554_033014_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban three-lane road under an elevated structure has smooth pavement and moderate traffic, with a guardrail along the right edge. A white hatchback ahead-left moves right and cuts into the ego lane as it goes around parked vehicles along the left curb. A large white coach bus farther ahead in the same lane continues at a steady pace and effectively sets the ego vehicle's speed. A dark car in the right lane accelerates forward and overtakes without entering the ego lane. A blue truck stands parked in the left lane near the curb, creating the obstruction that prompts the hatchback's maneuver.", "hazard_reasoning": "A white hatchback is cutting in front of the ego car from the left lane, because it is maneuvering around parked cars. The sudden cut-in requires the driver to adjust speed and distance to avoid a collision by slowing down."}
{"id": "train_01327", "split": "train", "clip_key": "2020-0227-104226_076425_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "076425"}, "frames": ["2020-0227-104226_076425_movie_t-3.jpg", "2020-0227-104226_076425_movie_t-2.jpg", "2020-0227-104226_076425_movie_t-1.jpg", "2020-0227-104226_076425_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with a single narrow lane each direction runs past low-rise shops and homes, the asphalt is clean with green edge lanes and traffic is light. A black van ahead in the ego lane drives away steadily, directly controlling the ego car's pace. On the left sidewalk, a pedestrian in a red jacket walks near the curb toward a zebra crossing, close enough to potentially step into the lane. Scooters are parked by a shopfront on the left but remain off the roadway. A 30 km/h speed limit sign is visible on a pole to the left. Short bollards line the left curb and no other moving vehicles or hazards appear.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. The van's position directly ahead may require the driver to adjust speed or be prepared for any unexpected maneuvers."}
{"id": "train_01328", "split": "train", "clip_key": "2020-0205-103411_094297_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "094297"}, "frames": ["2020-0205-103411_094297_movie_t-3.jpg", "2020-0205-103411_094297_movie_t-2.jpg", "2020-0205-103411_094297_movie_t-1.jpg", "2020-0205-103411_094297_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A busy urban arterial with multiple same-direction lanes and painted dividers has smooth pavement and moderate, steady flow in bright daylight. In the ego lane directly ahead, a small white flatbed truck with a ladder accelerates away as the traffic light ahead is green, briefly setting the pace before opening a gap. In the lane to the left, a queue of cars creeps forward alongside, staying in lane and not merging. In the lane to the right, a motorcycle rides ahead past the ego vehicle while keeping a straight line. Overhead signals are visible and show green for the ego direction.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01329", "split": "train", "clip_key": "2020-0203-114632_068611_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "068611"}, "frames": ["2020-0203-114632_068611_movie_t-3.jpg", "2020-0203-114632_068611_movie_t-2.jpg", "2020-0203-114632_068611_movie_t-1.jpg", "2020-0203-114632_068611_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the stopped vehicle", "environment_perception": "An urban arterial with two lanes in the ego direction passes mid-rise buildings and a curbside railing with parked bicycles; the pavement is smooth and traffic is moderate, queuing at an intersection. A silver van directly ahead in the ego lane is stopped for a red light and holds the ego car. Slightly farther ahead in the adjacent right same-direction lane, a cement mixer truck waits near the intersection. Beyond it in the same lane, a white flatbed truck is also stopped in the queue, limiting the forward view. Overhead traffic lights facing the ego direction display red.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver must stop to avoid colliding with the halted vehicle at the intersection."}
{"id": "train_01330", "split": "train", "clip_key": "2020-0129-144857_088152_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "088152"}, "frames": ["2020-0129-144857_088152_movie_t-3.jpg", "2020-0129-144857_088152_movie_t-2.jpg", "2020-0129-144857_088152_movie_t-1.jpg", "2020-0129-144857_088152_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs alongside a sidewalk and trees, divided from oncoming lanes by a steel guardrail; the pavement looks smooth and traffic is moderate and flowing. A black van drives ahead in the ego lane with clear road in front, effectively setting the ego car's pace. A silver hatchback travels ahead in the left lane at a similar speed and stays in its lane without encroaching. Farther ahead in the same lane a small box truck continues straight, keeping the flow steady. Beyond the guardrail, oncoming trucks pass. Overhead gantry signs show through arrows for both lanes.", "hazard_reasoning": "There is a black van driving in the ego lane, in front of the ego car, because the road ahead is clear. The driver should anticipate that the van may slow or brake unexpectedly and accelerate to maintain a safe following distance."}
{"id": "train_01331", "split": "train", "clip_key": "titan_clip_1038_000312_movie", "source": {"subset": "titan", "scenario": "clip_1038", "frame": "000312"}, "frames": ["titan_clip_1038_000312_movie_t-3.jpg", "titan_clip_1038_000312_movie_t-2.jpg", "titan_clip_1038_000312_movie_t-1.jpg", "titan_clip_1038_000312_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban back street with a narrow two-way carriageway and no median runs straight ahead; the pavement appears smooth and traffic is light. A pedestrian wearing all black is ahead along the left side of the ego lane, walking away from the camera and occupying the margin, which limits space in the lane. A black van in the opposing direction stands near the right curb facing the ego vehicle, narrowing the road width ahead. Another pedestrian at the near left edge walks along the sidewalk and moves out of frame. A line of orange cones borders the left sidewalk beside low brickwork, reducing shoulder space.", "hazard_reasoning": "There is a pedestrian wearing all black, walking along the left side of the road, away from the ego car. The driver should slow down because the pedestrian could unexpectedly enter the lane and visibility is limited by the parked van and cones."}
{"id": "train_01332", "split": "train", "clip_key": "titan_clip_871_000228_movie", "source": {"subset": "titan", "scenario": "clip_871", "frame": "000228"}, "frames": ["titan_clip_871_000228_movie_t-3.jpg", "titan_clip_871_000228_movie_t-2.jpg", "titan_clip_871_000228_movie_t-1.jpg", "titan_clip_871_000228_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban side street without a centerline approaches a small intersection with zebra crossings; the pavement looks smooth and traffic is light with no moving vehicles. A line of traffic cones along the left side indicates a construction site and narrows the roadway. Two pedestrians ahead step from the right across the crosswalk toward the left, occupying the ego path. A man at the left edge in the foreground walks toward the camera along the lane edge, close to the path. Another pedestrian farther ahead proceeds away along the cones, staying outside the lane.", "hazard_reasoning": "There is a traffic cone on the left side of the road indicating a construction site. The cone signals a reduced lane width and nearby works, so the driver should carefully manoeuvre around it to avoid entering the work area."}
{"id": "train_01333", "split": "train", "clip_key": "2020-0220-151845_048532_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "048532"}, "frames": ["2020-0220-151845_048532_movie_t-3.jpg", "2020-0220-151845_048532_movie_t-2.jpg", "2020-0220-151845_048532_movie_t-1.jpg", "2020-0220-151845_048532_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway carries three same-direction lanes with clear dashed lines and dry, slightly worn pavement; traffic is heavy and slow. A red truck directly ahead in the ego lane slows steadily, reducing the gap and setting the ego car's pace. To the left, a small silver van in the adjacent lane moves forward a little faster, potentially overtaking the truck while remaining parallel to the ego path. On the right, a black SUV and several minicars queue almost stationary in the right lane, limiting any lane change to that side. Overhead blue direction signs provide lane guidance for upcoming routes.", "hazard_reasoning": "There is a red truck slowing down in front of the ego car in the ego lane. The red truck's reduced speed ahead could require the driver to decelerate promptly to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01334", "split": "train", "clip_key": "2020-0225-145150_033741_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-145150_033741_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-145150_033741_movie_t-3_augB1.jpg", "2020-0225-145150_033741_movie_t-2_augB1.jpg", "2020-0225-145150_033741_movie_t-1_augB1.jpg", "2020-0225-145150_033741_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane undivided arterial with smooth asphalt carries heavy, slow-moving same-direction traffic under a pedestrian overpass. The ego travels in a middle lane as vehicles inch forward in congestion. Directly ahead in the ego lane, a blue truck slows because of traffic congestion ahead, constraining the ego car's pace. Ahead slightly right, a green box truck creeps forward in the adjacent lane, keeping alongside the queue and limiting forward visibility and passing room. At the far right across a striped gore, a large white box truck approaches from a side lane and begins merging into the main lanes, which may place it near the ego's path. A small truck with a green tarp is stopped along the left curb. A no-stopping sign is posted on the overpass.", "hazard_reasoning": "There is a blue van slowing down in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_01335", "split": "train", "clip_key": "titan_clip_1257_000096_movie", "source": {"subset": "titan", "scenario": "clip_1257", "frame": "000096"}, "frames": ["titan_clip_1257_000096_movie_t-3.jpg", "titan_clip_1257_000096_movie_t-2.jpg", "titan_clip_1257_000096_movie_t-1.jpg", "titan_clip_1257_000096_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban residential two-way street with no centerline runs between close buildings; the narrow pavement looks smooth and traffic is light with only pedestrians and parked cars visible. On the right edge near the ego path, a pedestrian wearing a cap walks toward the vehicle in the roadway because another person occupies the right shoulder, so he may drift slightly into the lane. Just ahead on the right shoulder, a man in a white shirt stands by a vending machine, remaining stationary and compressing the available space. Farther ahead along the right curb, a small group including a child proceeds away from the ego-vehicle, continuing ahead in the same corridor. A yellow car is parked on a left-side driveway, and convex corner mirrors hang on both sides.", "hazard_reasoning": "There is a pedestrian wearing a cap and walking on the right side of the road, towards the ego-car, because of another pedestrian on the right shoulder. Driver should carefully manoeuvre around the pedestrian wearing a cap to maintain safe distance and avoid collision."}
{"id": "train_01336", "split": "train", "clip_key": "2020-0220-102630_029803_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "029803"}, "frames": ["2020-0220-102630_029803_movie_t-3.jpg", "2020-0220-102630_029803_movie_t-2.jpg", "2020-0220-102630_029803_movie_t-1.jpg", "2020-0220-102630_029803_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban street with buildings close by carries two same-direction lanes without a median; the pavement is smooth and traffic is heavy and slow. A black motorcycle is stopped in the ego lane directly ahead because of congestion, holding the ego car's pace. Farther ahead, a white box truck stands still in the stream, creating the bottleneck. In the adjacent right lane, a dark van and a white car edge forward beside the ego vehicle, keeping the lanes tightly packed. Cones and a small work trailer at the left curb narrow the space near the sidewalk.", "hazard_reasoning": "There is a black motorcycle stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver needs to stop to avoid a collision with the halted motorcycle and adapt to the slow-moving traffic."}
{"id": "train_01337", "split": "train", "clip_key": "titan_clip_116_000582_movie", "source": {"subset": "titan", "scenario": "clip_116", "frame": "000582"}, "frames": ["titan_clip_116_000582_movie_t-3.jpg", "titan_clip_116_000582_movie_t-2.jpg", "titan_clip_116_000582_movie_t-1.jpg", "titan_clip_116_000582_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrians crossing ahead", "environment_perception": "A narrow urban street lined with tall buildings has a single undivided lane with smooth pavement and light traffic. Ahead, two pedestrians wearing white shirts and black pants cross from the right to the left in front of the ego car, walking across its path. Farther ahead in the same direction, a white van continues straight along the lane. Caf A-frame signs stand near the left edge of the roadway and a parked van on the near right narrows the passage; no prominent signals or posted speeds are visible.", "hazard_reasoning": "There are two pedestrians, both wearing a white shirt and black pants, crossing the street in front of the ego car, from the right side of the street to the left side. The driver should yield to avoid collision with these pedestrians crossing ahead."}
{"id": "train_01338", "split": "train", "clip_key": "2020-0210-155354_035834_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "035834"}, "frames": ["2020-0210-155354_035834_movie_t-3.jpg", "2020-0210-155354_035834_movie_t-2.jpg", "2020-0210-155354_035834_movie_t-1.jpg", "2020-0210-155354_035834_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three lanes in the same direction, no median visible, has smooth pavement and heavy, slow-moving traffic. Directly ahead in the ego lane, a blue hatchback straddles the lane line and stops mid lane change, constraining the ego vehicle. In the left lane, a white van slightly ahead creeps near the curb, matching the queue and leaving little space for the hatchback to move over. In the adjacent right lane, a black sedan just ahead rolls slowly alongside, blocking the gap the hatchback needs to merge. Large overhead blue destination signs span the roadway.", "hazard_reasoning": "There is a blue hatchback stopped in the middle of changing lanes, in front of the ego car. The hatchback's unexpected halt mid-lane change directly ahead creates a collision risk, so you must stop to avoid an accident."}
{"id": "train_01339", "split": "train", "clip_key": "2020-0213-143552_049237_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "049237"}, "frames": ["2020-0213-143552_049237_movie_t-3.jpg", "2020-0213-143552_049237_movie_t-2.jpg", "2020-0213-143552_049237_movie_t-1.jpg", "2020-0213-143552_049237_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with a raised median fence divides oncoming traffic, the pavement looks smooth, and flow in the ego direction is slow. A large white truck directly ahead in the ego lane slows because of congestion ahead, constraining the ego car's pace. To the left, a silver minivan in the adjacent same-direction lane continues straight and moves slightly ahead, limiting a potential lane change. On the far side of the median, a white van travels toward the camera in the oncoming lane and passes without interaction. A pedestrian overpass spans the roadway, with buildings and some parked bicycles along the left sidewalk.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. Drivers should slow down to maintain a safe distance as the truck decelerates due to congestion ahead."}
{"id": "train_01340", "split": "train", "clip_key": "2020-0131-103016_008906_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "008906"}, "frames": ["2020-0131-103016_008906_movie_t-3.jpg", "2020-0131-103016_008906_movie_t-2.jpg", "2020-0131-103016_008906_movie_t-1.jpg", "2020-0131-103016_008906_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs under an elevated roadway, with smooth dry pavement and heavy traffic queued at an intersection. A silver motorcycle is directly ahead in the ego lane, stationary because the light ahead shows red, and it blocks the ego vehicle's path. A small silver hatchback waits a short distance in front of the motorcycle in the same lane, holding the queue. Vehicles in the adjacent lanes, including a white pickup to the right and a black sedan to the left, line up alongside and restrict lane changes.", "hazard_reasoning": "There is a silver motorcycle stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid rear-ending the motorcycle and obey the red light."}
{"id": "train_01341", "split": "train", "clip_key": "titan_clip_1127_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1127_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1127_000204_movie_t-3_augB1.jpg", "titan_clip_1127_000204_movie_t-2_augB1.jpg", "titan_clip_1127_000204_movie_t-1_augB1.jpg", "titan_clip_1127_000204_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban residential street with a single shared lane and red-painted shoulders runs between apartments on the left and trees with a riverside railing on the right; the pavement is smooth and traffic is light with no vehicles present. Ahead of the ego car, a pedestrian in a red dress crosses from the right side toward the left, directly in front of the lane and likely to enter the ego path. On the near right edge, a man walks along the shoulder in the same direction, close to the travel lane and constraining the ego vehicle's pace. Farther ahead on the left edge, a couple of pedestrians continue along the shoulder with minimal interaction. The road curves gently, and overhanging vegetation narrows sight lines.", "hazard_reasoning": "There is a pedestrian in front of the ego car wearing a red dress, crossing to the left side of the road. The driver should slow down to allow the pedestrian to cross safely and prevent a collision."}
{"id": "train_01342", "split": "train", "clip_key": "2020-0213-143552_077812_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "077812"}, "frames": ["2020-0213-143552_077812_movie_t-3.jpg", "2020-0213-143552_077812_movie_t-2.jpg", "2020-0213-143552_077812_movie_t-1.jpg", "2020-0213-143552_077812_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided expressway or ramp with a single lane in the ego direction runs between tall sound walls and continuous concrete barriers on smooth, dry pavement; traffic is light. A black truck ahead in the ego lane moves forward at a steady pace because the lane is clear, effectively setting the ego vehicle's speed. On a parallel lane separated by barriers to the right, a white car travels in the same direction and continues ahead without interacting with the ego lane. No salient signals or signs appear, and the corridor curves gently under clear daylight.", "hazard_reasoning": "There is a black truck moving forward in front of the ego car in the ego lane, because the lane is clear. Therefore, the driver should be aware of the truck ahead, as it may brake suddenly."}
{"id": "train_01343", "split": "train", "clip_key": "2020-0206-101736_070573_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "070573"}, "frames": ["2020-0206-101736_070573_movie_t-3.jpg", "2020-0206-101736_070573_movie_t-2.jpg", "2020-0206-101736_070573_movie_t-1.jpg", "2020-0206-101736_070573_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two through lanes plus a right-turn lane in the ego direction has smooth pavement and light to moderate, free-flowing traffic. A small dump truck runs ahead in the center through lane and sets the ego vehicle's pace. In the left through lane, a white van travels parallel slightly ahead without changing lanes. On the near right, a white kei truck proceeds in the right-turn-only lane alongside, preparing to continue toward the intersection rather than merging. An overhead gantry displays a posted speed limit of 50 and lane control panels.", "hazard_reasoning": "No caption provided. There are no immediate hazards detected; visibility is good and traffic is light, so the driver can proceed safely by maintaining normal vigilance."}
{"id": "train_01344", "split": "train", "clip_key": "titan_clip_1021_000312_movie", "source": {"subset": "titan", "scenario": "clip_1021", "frame": "000312"}, "frames": ["titan_clip_1021_000312_movie_t-3.jpg", "titan_clip_1021_000312_movie_t-2.jpg", "titan_clip_1021_000312_movie_t-1.jpg", "titan_clip_1021_000312_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian on road", "environment_perception": "In a dense urban neighborhood, the ego vehicle travels on the left along a very narrow two-way street without a centerline and with minimal sidewalk, on dry, slightly worn pavement. Traffic is light with no moving vehicles nearby. Ahead on the left, a pedestrian in black pants and a black sleeveless shirt walks away along the road edge where there is no sidewalk, and may encroach into the ego lane. Parked vehicles crowd both sides, including a large SUV tight to the right curb and a minivan on the left, and a roadside utility pole further narrows the passage.", "hazard_reasoning": "There is a pedestrian wearing black pant and black sleeveless shirt and walking on the left side of the road and away from the ego car, because of lack of sidewalk. The pedestrian is walking on the road due to lack of sidewalk and may step into the lane unexpectedly, so maintain cautious driving."}
{"id": "train_01345", "split": "train", "clip_key": "titan_clip_691_000060_movie", "source": {"subset": "titan", "scenario": "clip_691", "frame": "000060"}, "frames": ["titan_clip_691_000060_movie_t-3.jpg", "titan_clip_691_000060_movie_t-2.jpg", "titan_clip_691_000060_movie_t-1.jpg", "titan_clip_691_000060_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single lane and no median runs between buildings; the pavement is smooth and traffic is light with no moving vehicles visible. Ahead in the middle of the road, a lady wearing a yellow shirt and black pants carries a handbag and walks away from the ego car because vans parked along the left sidewalk block the footpath, placing her in the ego lane and constraining available space. Beside her, a man with a backpack walks in the same direction near the lane center, also occupying the ego path. Several white vans are parked along the left curb, encroaching on the sidewalk and acting as static obstacles. No signals or notable signs are visible, and there is no oncoming traffic.", "hazard_reasoning": "There is a lady, wearing a yellow shirt and black pants, carrying a handbag, walking, in the middle of the road, away from the ego car, because of parked vehicles on the sidewalk. The driver should slow down to avoid potential collision with her as she walks in the roadway."}
{"id": "train_01346", "split": "train", "clip_key": "2020-0220-102630_067834_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "067834"}, "frames": ["2020-0220-102630_067834_movie_t-3.jpg", "2020-0220-102630_067834_movie_t-2.jpg", "2020-0220-102630_067834_movie_t-1.jpg", "2020-0220-102630_067834_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid rear-ending the stopped van.", "environment_perception": "An urban multi-lane arterial with smooth pavement and painted shoulders carries heavy, stop-and-go traffic. A white van is stopped directly ahead in the ego lane because of congestion, holding the ego car. To the right, a black SUV in the adjacent lane inches forward alongside at similar speed, constraining lane changes. On the far left by the curb, a small blue car stays stationary within the hatched edge area and does not enter the lane. Overhead lane-use signs ahead indicate straight-ahead travel.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver needs to stop to avoid a collision with the halted vehicle ahead."}
{"id": "train_01347", "split": "train", "clip_key": "2020-0228-150133_076373_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "076373"}, "frames": ["2020-0228-150133_076373_movie_t-3.jpg", "2020-0228-150133_076373_movie_t-2.jpg", "2020-0228-150133_076373_movie_t-1.jpg", "2020-0228-150133_076373_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial in Japan carries two same-direction lanes separated from oncoming lanes by central paint, and the dry pavement looks smooth while traffic bunches at a signal. Directly ahead in the ego lane, a silver hatchback is stopped for a red light, holding the ego vehicle. A large box truck to the right proceeds slowly in the adjacent lane and then queues near the intersection, partially blocking the right-side view. Pedestrians on the left sidewalk walk away from the camera near buildings without stepping into the roadway.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, because of the red traffic light. The driver must stop to avoid a collision with the stationary vehicle at the red light."}
{"id": "train_01348", "split": "train", "clip_key": "2020-0214-102601_000512_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "000512"}, "frames": ["2020-0214-102601_000512_movie_t-3.jpg", "2020-0214-102601_000512_movie_t-2.jpg", "2020-0214-102601_000512_movie_t-1.jpg", "2020-0214-102601_000512_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane in each direction and a solid yellow centerline is shown; the pavement is smooth and dry and traffic is light. A pedestrian is close ahead, crossing the ego lane from the right curb toward the left at a walking pace, directly occupying the path and constraining the ego vehicle. In the oncoming lane to the right, a black van is stopped at the curb, facing the opposite direction and partly encroaching into the roadway, narrowing space for oncoming traffic but not entering the ego lane. A motorcycle is parked by a storefront on the left.", "hazard_reasoning": "No hazards are detected as there are no moving vehicles, pedestrians, or obstacles in the scene requiring driver action."}
{"id": "train_01349", "split": "train", "clip_key": "2020-0213-143552_016521_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "016521"}, "frames": ["2020-0213-143552_016521_movie_t-3.jpg", "2020-0213-143552_016521_movie_t-2.jpg", "2020-0213-143552_016521_movie_t-1.jpg", "2020-0213-143552_016521_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in each direction runs between mid-rise buildings beneath a pedestrian overpass. The pavement is dry and smooth, and traffic is slow and queued. A white hatchback is stopped directly ahead in the ego lane because of congestion, holding the ego car in place. To the left near the curb, a white van is stopped at the roadside and stays out of the lane. In the right-side oncoming lanes, a black wagon and other vehicles approach steadily, separated only by painted lines and not interacting with the ego vehicle.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle."}
{"id": "train_01350", "split": "train", "clip_key": "titan_clip_349_000762_movie", "source": {"subset": "titan", "scenario": "clip_349", "frame": "000762"}, "frames": ["titan_clip_349_000762_movie_t-3.jpg", "titan_clip_349_000762_movie_t-2.jpg", "titan_clip_349_000762_movie_t-1.jpg", "titan_clip_349_000762_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked minivan", "environment_perception": "An urban commercial street with a single narrow lane and no median is shown; the pavement is smooth and traffic is light with no visible oncoming vehicles. A black minivan is parked on the left with its rear open as it is being unloaded, partly occupying the lane and edged by orange cones, which narrows the passage for the ego vehicle. Just ahead in the same lane, a small roofed delivery scooter stands near the minivan, further constraining the path. A pedestrian on the left sidewalk walks toward the van near the curb, close to the ego vehicle's path.", "hazard_reasoning": "There is a black minivan parked on the left side of the road, because it is being unloaded. The minivan is partially blocking the lane and may require the driver to navigate carefully around it."}
{"id": "train_01351", "split": "train", "clip_key": "titan_clip_790_000024_movie", "source": {"subset": "titan", "scenario": "clip_790", "frame": "000024"}, "frames": ["titan_clip_790_000024_movie_t-3.jpg", "titan_clip_790_000024_movie_t-2.jpg", "titan_clip_790_000024_movie_t-1.jpg", "titan_clip_790_000024_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction curves gently right between close buildings; the pavement is smooth and traffic is light. There is no median and conditions stay steady through the scene. On the right in the opposing lane, a light-blue car approaches across the zebra crossing and continues straight past the ego vehicle while remaining in its lane. Farther ahead in the opposing lane, a dark minivan also approaches along the bend, proceeding straight without constraining the ego vehicle. At the left curb beside a vending machine, a pedestrian stands on the sidewalk near the crosswalk and does not enter the road. An overhead traffic signal shows green.", "hazard_reasoning": "No caption provided. No hazards are present in the scene, so the driver can continue driving normally."}
{"id": "train_01352", "split": "train", "clip_key": "2020-0226-140503_056188_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-140503_056188_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-140503_056188_movie_t-3_augB1.jpg", "2020-0226-140503_056188_movie_t-2_augB1.jpg", "2020-0226-140503_056188_movie_t-1_augB1.jpg", "2020-0226-140503_056188_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way road in Japan with the ego vehicle in the left lane approaches a signalized intersection beside a small median island; the pavement is dry and traffic is moderate and steady. On the left crosswalk ahead, a cyclist wearing black pants and carrying two bags rides from left to right across the ego lane as the signal shows green, passing directly in front of the car. Directly ahead, a white van in the same direction proceeds straight at low speed through the junction, setting the pace. To the right of the median, oncoming cars move through the intersection without encroaching on the ego path. A pedestrian overpass spans the junction above.", "hazard_reasoning": "There's a cyclist wearing black pants and carrying two bags, crossing the road from left to right in front of the ego-car, because of green traffic lights. The driver should stop to yield to the cyclist moving into the vehicle's path and prevent a collision."}
{"id": "train_01353", "split": "train", "clip_key": "titan_clip_936_000540_movie", "source": {"subset": "titan", "scenario": "clip_936", "frame": "000540"}, "frames": ["titan_clip_936_000540_movie_t-3.jpg", "titan_clip_936_000540_movie_t-2.jpg", "titan_clip_936_000540_movie_t-1.jpg", "titan_clip_936_000540_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "be aware of the cyclist ahead", "environment_perception": "A narrow urban two-way street with no center divider and smooth but worn pavement carries light traffic as the ego vehicle proceeds along the left side. A pedestrian with a suitcase steps from the right across the zebra crossing toward the center, likely to enter the ego lane. A black SUV ahead in the ego lane near the left curb is stopped, narrowing the lane and constraining the ego vehicle's pace. A cyclist in a white shirt rides toward the ego car along the right side in the oncoming lane, approaching the center where paths could come close.", "hazard_reasoning": "There is a cyclist wearing a white shirt and cycling toward the ego car, on the right side of the road. The cyclist's approach on the right side may bring them into your path, so you should be aware of their presence to maintain a safe distance."}
{"id": "train_01354", "split": "train", "clip_key": "titan_clip_351_000540_movie", "source": {"subset": "titan", "scenario": "clip_351", "frame": "000540"}, "frames": ["titan_clip_351_000540_movie_t-3.jpg", "titan_clip_351_000540_movie_t-2.jpg", "titan_clip_351_000540_movie_t-1.jpg", "titan_clip_351_000540_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban neighborhood street with mid-rise buildings features a narrow single travel lane without a median; the pavement looks clean and traffic is light. A white truck is parked on the left side of the road with an orange cone, partially narrowing the lane. Ahead in the same direction, a rider on a two-wheeler proceeds away near the lane center and can constrain the ego vehicle's pace. On the right sidewalk close to the curb, a pedestrian walks forward alongside the road while remaining on the walkway. No salient signals appear, and there is no oncoming traffic.", "hazard_reasoning": "There is a white truck parked on the left side of the road. The parked truck narrows the lane and can obscure other road users, so you should carefully manoeuvre around it."}
{"id": "train_01355", "split": "train", "clip_key": "2020-0131-135401_013394_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "013394"}, "frames": ["2020-0131-135401_013394_movie_t-3.jpg", "2020-0131-135401_013394_movie_t-2.jpg", "2020-0131-135401_013394_movie_t-1.jpg", "2020-0131-135401_013394_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane per direction and no median leads to a signalized intersection; the asphalt is smooth and traffic is light. Ahead near the right curb, two motorcycles travel in the same direction past the shops and may merge into the ego lane as the road narrows toward the junction. Far ahead in the oncoming approach, a white van in the middle of the intersection changes lanes toward the left side of the intersection, shifting within its stream without entering the ego path. Pedestrians stand on both sidewalks by the railings near the crosswalk, appearing to wait.", "hazard_reasoning": "There is a white van lane changing, in the middle of the intersection, from the opposite side to the left side of the intersection. Because the van is merging across lanes into your path, you should slow down to avoid a potential collision."}
{"id": "train_01356", "split": "train", "clip_key": "2020-0203-154554_079474_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "079474"}, "frames": ["2020-0203-154554_079474_movie_t-3.jpg", "2020-0203-154554_079474_movie_t-2.jpg", "2020-0203-154554_079474_movie_t-1.jpg", "2020-0203-154554_079474_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with two same-direction lanes and a striped shoulder on the right runs between mid-rise buildings and leafless trees; the pavement is dry and smooth, and traffic ahead grows dense. A white hatchback directly ahead in the ego lane slows because vehicles farther ahead are congested, so it sets the ego car's pace. In the adjacent right lane, a queue of cars creeps forward alongside the ego lane, contributing to the slowdown. A large box truck is stopped on the striped shoulder to the right near the camera, while additional white vehicles line the shoulder farther ahead. No traffic signals or speed signs are clearly visible, and there are no obvious obstacles on the left sidewalk beyond standard guardrails.", "hazard_reasoning": "\"There is a white hatchback slowing in front of the ego car because of traffic congestion ahead in the ego lane.\" The driver should slow down to maintain a safe distance due to the congestion ahead."}
{"id": "train_01357", "split": "train", "clip_key": "2020-0131-135401_081048_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "081048"}, "frames": ["2020-0131-135401_081048_movie_t-3.jpg", "2020-0131-135401_081048_movie_t-2.jpg", "2020-0131-135401_081048_movie_t-1.jpg", "2020-0131-135401_081048_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway in a dense city setting carries two same-direction lanes between concrete barriers; the dry pavement is smooth and traffic is light as the road climbs under an overpass with a right-hand ramp splitting upward. A white hatchback directly ahead in the ego lane cruises steadily, constraining the ego vehicle's pace. Farther ahead in the same lane, a small white box truck continues uphill at similar speed, shaping the flow for following vehicles. The right-side ramp remains clear with no merging traffic.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01358", "split": "train", "clip_key": "2020-0225-145150_022474_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "022474"}, "frames": ["2020-0225-145150_022474_movie_t-3.jpg", "2020-0225-145150_022474_movie_t-2.jpg", "2020-0225-145150_022474_movie_t-1.jpg", "2020-0225-145150_022474_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial runs through mid-rise buildings, with a painted median and smooth dry pavement; traffic is moderate and flows steadily. A gray van drives ahead in the ego lane at a steady pace, effectively setting the ego vehicle's speed. To the left, a dark van is slightly ahead in the adjacent same-direction lane and continues straight while keeping its lane. On the right, a large green van approaches in the nearest oncoming lane and proceeds straight, remaining separated from the ego path by the painted buffer.", "hazard_reasoning": "There is a gray van driving in the ego lane. The van is approaching a red light and may stop suddenly, so the driver should be aware of the upcoming red light to adjust speed accordingly."}
{"id": "train_01359", "split": "train", "clip_key": "titan_clip_1099_000144_movie", "source": {"subset": "titan", "scenario": "clip_1099", "frame": "000144"}, "frames": ["titan_clip_1099_000144_movie_t-3.jpg", "titan_clip_1099_000144_movie_t-2.jpg", "titan_clip_1099_000144_movie_t-1.jpg", "titan_clip_1099_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian ahead", "environment_perception": "An urban shopping street with tiled pavement forms a narrow shared zone with no marked lanes or dividers; storefront signs and menu boards crowd the edges, and pedestrian flow is moderate. On the right side close to the camera, a pedestrian wearing a black suit carries a bag and walks toward the ego path, potentially stepping into the center of travel. Ahead, a cluster of pedestrians moves both toward and away from the camera along the corridor, some drifting laterally and constraining the available gap. At the left edge, a man stands at a restaurant entrance beside display boards that protrude slightly into the walkway, further narrowing space.", "hazard_reasoning": "There is a pedestrian wearing a black suit, carrying a bag, and walking on the right side of the road, towards the ego car. The pedestrian is approaching the vehicle's path, so the driver should yield to avoid a potential collision."}
{"id": "train_01360", "split": "train", "clip_key": "titan_clip_131_000162_movie", "source": {"subset": "titan", "scenario": "clip_131", "frame": "000162"}, "frames": ["titan_clip_131_000162_movie_t-3.jpg", "titan_clip_131_000162_movie_t-2.jpg", "titan_clip_131_000162_movie_t-1.jpg", "titan_clip_131_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian at left curb", "environment_perception": "An urban one-lane street with block-paved surface runs between tall buildings, with no median and light traffic. A small red fire truck ahead in the ego lane moves slowly near mid-block and limits the ego vehicle's speed. On the right near the truck, several pedestrians with umbrellas step off the curb and walk in the roadway, encroaching on the ego lane. A pedestrian wearing a white shirt and black pants stands at the left edge by a line of orange cones, close to the lane. Orange cones line the left side as a barrier along the roadside.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, standing on the left side of the road. The pedestrian may step onto the roadway unexpectedly, so the driver should be cautious of their presence."}
{"id": "train_01361", "split": "train", "clip_key": "titan_clip_621_000486_movie", "source": {"subset": "titan", "scenario": "clip_621", "frame": "000486"}, "frames": ["titan_clip_621_000486_movie_t-3.jpg", "titan_clip_621_000486_movie_t-2.jpg", "titan_clip_621_000486_movie_t-1.jpg", "titan_clip_621_000486_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian", "environment_perception": "An urban shopping street with a narrow single-lane, red-paved roadway curves to the right, bordered by bollards and storefronts; the surface is smooth and motor traffic is absent while pedestrian traffic is heavy. A pedestrian in a striped T-shirt carrying a handbag crosses from the left into the middle of the road toward the right directly across the ego vehicle's path. Another woman in dark clothing steps off the left edge ahead and moves toward the center, slowing as she navigates around the first crosser and affecting the vehicle's pace. Groups of pedestrians gather on the right corner by the shop entrance and begin edging toward the curb, suggesting further crossings.", "hazard_reasoning": "There is a pedestrian wearing a striped t-shirt and black pants, carrying a handbag, and crossing the street in the middle of the road from the left side to the right side. The driver should yield because the pedestrian is occupying the vehicle's path and has the right of way."}
{"id": "train_01362", "split": "train", "clip_key": "2020-0225-102455_074392_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "074392"}, "frames": ["2020-0225-102455_074392_movie_t-3.jpg", "2020-0225-102455_074392_movie_t-2.jpg", "2020-0225-102455_074392_movie_t-1.jpg", "2020-0225-102455_074392_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban commercial street with three same-direction lanes and no median is seen under dry pavement conditions, and traffic is heavy, bunching up at a signalized intersection. A white van is stopped directly ahead in the ego lane because the light is red, blocking the path and dictating the pace. To the left, a white box truck runs alongside at a crawl in its lane, limiting space for a left merge. In the adjacent right lane, a red flatbed truck followed by a black taxi slows to a stop near the line, keeping the ego vehicle boxed in as the queue forms.", "hazard_reasoning": "A white van is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop immediately to maintain safe distance and avoid a collision."}
{"id": "train_01363", "split": "train", "clip_key": "2020-0226-140503_104172_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "104172"}, "frames": ["2020-0226-140503_104172_movie_t-3.jpg", "2020-0226-140503_104172_movie_t-2.jpg", "2020-0226-140503_104172_movie_t-1.jpg", "2020-0226-140503_104172_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban street with narrow lanes, metal guardrails, and close storefronts is shown; the asphalt looks smooth and dark, and overall traffic is light and slow. Directly ahead in the ego lane a silver box truck is stopped, occupying the path and causing the ego car to wait. In the adjacent right lane, a few vehicles farther ahead proceed slowly without interacting with the ego's course. No traffic lights or speed signs are clearly visible. There are no pedestrians, bicycles, or work zones present, and no additional obstacles appear beyond the stopped truck.", "hazard_reasoning": "There is a silver truck stopped in front of the ego car, in the ego lane. Because it is stopped in your lane, you need to stop immediately to avoid a collision."}
{"id": "train_01364", "split": "train", "clip_key": "titan_clip_643_000300_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_643_000300_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_643_000300_movie_t-3_augB1.jpg", "titan_clip_643_000300_movie_t-2_augB1.jpg", "titan_clip_643_000300_movie_t-1_augB1.jpg", "titan_clip_643_000300_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with no median and smooth pavement carries light traffic, with parking bays along the left curb as the ego vehicle proceeds in the left lane. Ahead in the same direction, a white van continues straight and moves away, mildly constraining the ego's pace on the narrow carriageway. A pedestrian wearing a black shirt and black pants walks in the middle of the road ahead, moving away from the ego because a parked vehicle on the left obstructs the curb, and the person remains near the ego lane. Multiple parked cars line the left side, including a white hatchback close ahead, reducing space.", "hazard_reasoning": "A pedestrian wearing a black shirt with black pants is walking in the middle of the road, away from the ego car, because of the parked vehicle on the left. The pedestrian's path crosses the lane of travel, requiring the driver to reduce speed to avoid a potential collision."}
{"id": "train_01365", "split": "train", "clip_key": "2020-0204-150838_071387_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "071387"}, "frames": ["2020-0204-150838_071387_movie_t-3.jpg", "2020-0204-150838_071387_movie_t-2.jpg", "2020-0204-150838_071387_movie_t-1.jpg", "2020-0204-150838_071387_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated expressway with three same-direction lanes and a concrete barrier on the right has smooth pavement and moderate truck traffic moving steadily. A red container truck drives directly ahead in the ego lane and gradually pulls away, setting the pace. Slightly ahead to the left, a white box truck continues in the adjacent lane at a similar speed without encroaching on the ego path. On the far left, a silver cargo truck runs nearby and keeps its lane. No oncoming traffic is present.", "hazard_reasoning": "There is a red truck driving in the ego lane, away from the ego car. The truck ahead limits visibility under the overpass, so maintain a safe following distance by following the vehicle ahead."}
{"id": "train_01366", "split": "train", "clip_key": "titan_clip_143_000174_movie", "source": {"subset": "titan", "scenario": "clip_143", "frame": "000174"}, "frames": ["titan_clip_143_000174_movie_t-3.jpg", "titan_clip_143_000174_movie_t-2.jpg", "titan_clip_143_000174_movie_t-1.jpg", "titan_clip_143_000174_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down to yield to crossing pedestrians", "environment_perception": "An urban intersection with multi-story buildings surrounds a two-way street that has one lane per direction, no median, and smooth pavement; traffic is light. Two pedestrians ahead cross the ego lane left to right on the zebra crosswalk, one carrying a backpack and the other an umbrella, occupying the path and constraining the car's progress. An oncoming blue van beyond the crosswalk continues straight in its lane with ample separation and no direct interaction.", "hazard_reasoning": "There are two pedestrians in front of the ego car, carrying a backpack and an umbrella, crossing the street to the right side via the crosswalk. The driver should slow down to yield to crossing pedestrians and avoid collision."}
{"id": "train_01367", "split": "train", "clip_key": "2020-0129-144857_064695_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "064695"}, "frames": ["2020-0129-144857_064695_movie_t-3.jpg", "2020-0129-144857_064695_movie_t-2.jpg", "2020-0129-144857_064695_movie_t-1.jpg", "2020-0129-144857_064695_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multi-lane roadway curves right beside a close guardrail, with lanes splitting toward an elevated ramp; the pavement is dry and intact, and traffic is heavy and slow. Directly ahead in the ego lane, a white sedan slows because congestion builds ahead, setting the ego car's pace. To the left, a queue of large box trucks creeps forward in the adjacent same-direction lane, running parallel to the ego vehicle and leaving limited lateral clearance. Farther ahead in the same direction, a white bus and additional trucks inch toward the split, reinforcing the bottleneck. The right edge is bounded by the guardrail with a narrow shoulder.", "hazard_reasoning": "There is a white Sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced traffic speed."}
{"id": "train_01368", "split": "train", "clip_key": "2020-0207-151349_078961_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "078961"}, "frames": ["2020-0207-151349_078961_movie_t-3.jpg", "2020-0207-151349_078961_movie_t-2.jpg", "2020-0207-151349_078961_movie_t-1.jpg", "2020-0207-151349_078961_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial runs under an elevated structure with two same-direction lanes, a curb and guardrail on the right, worn but intact asphalt, and heavy stop-and-go traffic. A brown dump truck directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. In the adjacent lane to the left, a white box truck waits slightly ahead and creeps forward with the queue, partly blocking the view toward the junction. A black sedan farther left moves slowly alongside and edges ahead near the ego car, limiting room for a leftward lane change. No other hazards are apparent.", "hazard_reasoning": "There is a brown truck stopped in the ego lane, in front of the ego car, because of a red traffic light. You should stop to avoid a collision with the stationary truck at the signal."}
{"id": "train_01369", "split": "train", "clip_key": "2020-0203-114632_002617_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "002617"}, "frames": ["2020-0203-114632_002617_movie_t-3.jpg", "2020-0203-114632_002617_movie_t-2.jpg", "2020-0203-114632_002617_movie_t-1.jpg", "2020-0203-114632_002617_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the stopped van carefully", "environment_perception": "An urban two-way street with one lane per direction runs between dense shops and railings, the asphalt appears smooth and traffic is moderate. A gray van ahead on the left is stopped in the ego lane at the curb because of an emergency, partly blocking the lane and constraining the ego vehicle to slow. A bicyclist farther ahead near the centerline rides in the same direction as the ego, passing the stopped van and narrowing the available space. Two oncoming vehicles to the right, including a white kei van and a dark SUV, approach in their lane and continue straight past the scene without deviating.", "hazard_reasoning": "There is a gray van stopped on the left side of the road, in the ego lane, because of an emergency. The driver should manoeuvre around the stopped van carefully to avoid collision and maintain safe passage."}
{"id": "train_01370", "split": "train", "clip_key": "titan_clip_731_000486_movie", "source": {"subset": "titan", "scenario": "clip_731", "frame": "000486"}, "frames": ["titan_clip_731_000486_movie_t-3.jpg", "titan_clip_731_000486_movie_t-2.jpg", "titan_clip_731_000486_movie_t-1.jpg", "titan_clip_731_000486_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban commercial street with a single lane in the ego direction has worn pavement and light traffic. On the right, a black van is stopped partly in the lane at the curb, narrowing the passage as the ego vehicle approaches. At a nearby pedestrian crossing ahead, a pedestrian wearing black pants crosses from right to left across the ego lane, briefly occupying the path. A line of orange cones and a small barrier appear ahead near the center, guiding vehicles slightly left.", "hazard_reasoning": "There is a pedestrian wearing black pants and crossing the street at the pedestrian crossing, from the right to the left side of the road. The driver should stop to yield to the crossing pedestrian and avoid a collision."}
{"id": "train_01371", "split": "train", "clip_key": "titan_clip_564_000528_movie", "source": {"subset": "titan", "scenario": "clip_564", "frame": "000528"}, "frames": ["titan_clip_564_000528_movie_t-3.jpg", "titan_clip_564_000528_movie_t-2.jpg", "titan_clip_564_000528_movie_t-1.jpg", "titan_clip_564_000528_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban shopping street with brick paving and no centerline curves gently left, and the ego-vehicle moves slowly with very light vehicular traffic. On the right edge by a storefront, a pedestrian wearing sunglasses and a black T-shirt with a backpack stands beside a shop display that protrudes toward the roadway, close to the ego lane. Ahead near the center of the roadway, another pedestrian walks away from the camera, subtly constraining the ego vehicle's pace. Large display racks along the right narrow the usable road width.", "hazard_reasoning": "There is a pedestrian wearing sunglasses and a black t-shirt, carrying a backpack, and standing on the right side of the road because of a shop display. The driver should manoeuvre around this pedestrian to avoid a collision."}
{"id": "train_01372", "split": "train", "clip_key": "titan_clip_1274_000552_movie", "source": {"subset": "titan", "scenario": "clip_1274", "frame": "000552"}, "frames": ["titan_clip_1274_000552_movie_t-3.jpg", "titan_clip_1274_000552_movie_t-2.jpg", "titan_clip_1274_000552_movie_t-1.jpg", "titan_clip_1274_000552_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with no marked centerline runs between shops, the pavement looks slightly wet, and traffic is light with many parked vehicles. On the left edge ahead, a pedestrian in a white shirt and black pants walks away from the vehicle along the roadway because there is no sidewalk, staying near the curb but close to the ego path. Farther ahead near mid-block, another person crosses from left to right, briefly entering the travel area. On the right, a white van is stopped partly in the lane beside storefronts, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants walking on the left side of the road, away from the ego car, because there is no sidewalk. Slow down to allow sufficient reaction time as the pedestrian walks along the road edge."}
{"id": "train_01373", "split": "train", "clip_key": "titan_clip_1031_000024_movie", "source": {"subset": "titan", "scenario": "clip_1031", "frame": "000024"}, "frames": ["titan_clip_1031_000024_movie_t-3.jpg", "titan_clip_1031_000024_movie_t-2.jpg", "titan_clip_1031_000024_movie_t-1.jpg", "titan_clip_1031_000024_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "An urban residential alley with a single narrow two-way carriageway and no centerline has smooth pavement and very light traffic. The ego lane's left edge is partially blocked by a roadside work zone; a blue dump truck is stopped ahead on the left and there are orange traffic cones on the left side that channel the lane and narrow the path. Bicycles are parked along the right curb just beyond a utility pole, close to the travel lane but stationary. No other vehicles or pedestrians are moving in view. A blue pedestrian sign on a pole to the right is visible.", "hazard_reasoning": "There are orange traffic cones on the left side. These cones indicate a construction zone partially blocking the lane, so the driver should carefully manoeuvre around them to maintain a safe path."}
{"id": "train_01374", "split": "train", "clip_key": "titan_clip_148_000702_movie", "source": {"subset": "titan", "scenario": "clip_148", "frame": "000702"}, "frames": ["titan_clip_148_000702_movie_t-3.jpg", "titan_clip_148_000702_movie_t-2.jpg", "titan_clip_148_000702_movie_t-1.jpg", "titan_clip_148_000702_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban side street with closely spaced buildings, this is a narrow two-way single-lane road without a divider, the asphalt looks smooth and traffic is light. Ahead along the left edge, a pedestrian in black pants and a blue shirt walks away from the car near the curb, moving parallel to the lane and potentially influencing the available space. A box truck stands along the left ahead, partly protruding into the ego lane and constraining speed through the pinch point. In the opposite lane to the right, a small white van approaches and passes the constriction, remaining oncoming but clear of the ego path. Parked vans line both sides and create a narrow corridor, with no salient signals visible.", "hazard_reasoning": "There is a pedestrian wearing black pants and a blue shirt, walking along the left side of the road, away from the ego car. The pedestrian is close to the traffic lane and could unexpectedly step further into the road, so the driver should slow down to maintain safety."}
{"id": "train_01375", "split": "train", "clip_key": "2020-0131-135401_087704_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "087704"}, "frames": ["2020-0131-135401_087704_movie_t-3.jpg", "2020-0131-135401_087704_movie_t-2.jpg", "2020-0131-135401_087704_movie_t-1.jpg", "2020-0131-135401_087704_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction runs straight between mid-rise buildings, divided by a concrete barrier with guardrails; the pavement is dry and intact, and traffic is moderate. A white van ahead in the ego lane drives away, gradually increasing the gap and pacing the flow. A small flatbed truck travels slightly ahead to the left in the adjacent same-direction lane at a similar speed, intermittently aligning with the van and shaping the available space. In the opposite lanes beyond the median, several cars, including a small white van, approach steadily without affecting the ego vehicle.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. The van ahead could brake unexpectedly or obscure the view of hazards, so the driver should maintain a safe following distance."}
{"id": "train_01376", "split": "train", "clip_key": "2020-0204-150838_077317_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "077317"}, "frames": ["2020-0204-150838_077317_movie_t-3.jpg", "2020-0204-150838_077317_movie_t-2.jpg", "2020-0204-150838_077317_movie_t-1.jpg", "2020-0204-150838_077317_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban expressway runs under elevated structures with three same-direction lanes, bounded by metal guardrails and construction fencing; the asphalt is smooth and the road curves gently right as traffic flows at a moderate pace. A white box truck directly ahead in the ego lane slows, constraining the ego car's speed. Slightly farther ahead and to the left, another large truck continues steadily in the adjacent lane, remaining parallel to the ego path. In the right lane just ahead, a white sedan cruises at a similar speed beside the slowing truck, keeping its position without entering the ego lane. No traffic signals are visible, and roadside work structures sit behind barriers.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane. Since the truck is decelerating, you should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_01377", "split": "train", "clip_key": "2020-0203-154554_007561_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "007561"}, "frames": ["2020-0203-154554_007561_movie_t-3.jpg", "2020-0203-154554_007561_movie_t-2.jpg", "2020-0203-154554_007561_movie_t-1.jpg", "2020-0203-154554_007561_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked bus", "environment_perception": "An urban two-way road with a single lane each direction approaches a wide intersection; the pavement is smooth and traffic is light. On the left near the curb, a green city bus is parked in a marked parking space beside the ego lane. Directly ahead in the ego lane, a white hatchback proceeds straight toward the crosswalk at moderate speed, setting the pace. In the opposite lane on the right, oncoming cars move through the intersection and pass by without entering the ego path. Several cars are parked along the right curb near the junction.", "hazard_reasoning": "There's a orange bus parked on the left side of the road, in the ego lane, because there's a parking space on the left side of the road. The driver should manoeuvre carefully around the parked bus to avoid collision and maintain lane discipline."}
{"id": "train_01378", "split": "train", "clip_key": "titan_clip_846_000036_movie", "source": {"subset": "titan", "scenario": "clip_846", "frame": "000036"}, "frames": ["titan_clip_846_000036_movie_t-3.jpg", "titan_clip_846_000036_movie_t-2.jpg", "titan_clip_846_000036_movie_t-1.jpg", "titan_clip_846_000036_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "In a quiet urban residential area, the ego-vehicle proceeds along a narrow two-way road with a double yellow centerline, smooth pavement, and brick sidewalks; traffic is extremely light with no vehicles ahead or oncoming. A white A-frame sign sits on the left sidewalk near the curb but does not encroach into the lane. The roadway shows a large 30 speed marking, and a parking sign is visible on the left.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and standing, on the left side of the road, in front of the ego-car. The driver should slow down because a pedestrian close to the roadway may step into the vehicle's path unexpectedly."}
{"id": "train_01379", "split": "train", "clip_key": "2020-0206-101736_071159_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "071159"}, "frames": ["2020-0206-101736_071159_movie_t-3.jpg", "2020-0206-101736_071159_movie_t-2.jpg", "2020-0206-101736_071159_movie_t-1.jpg", "2020-0206-101736_071159_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "An urban two-way arterial with two lanes in the ego direction and a double solid white center line runs through mid-rise buildings; pavement is dry and smooth with moderate traffic. The ego lane's flow eases slightly. A gray truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. A small flatbed truck farther ahead in the adjacent left lane continues steadily in its lane, occupying the passing lane and limiting an immediate lane change. Oncoming vehicles move in the right-side lanes beyond the double white lines and pass without affecting the ego path. A white car is parked at the left curb near the camera but remains outside the travel lane.", "hazard_reasoning": "There is a gray truck slowing in front of the ego car, in the ego lane. The truck's sudden slowdown can quickly reduce the gap, requiring an immediate stop to avoid a rear-end collision."}
{"id": "train_01380", "split": "train", "clip_key": "2020-0226-101332_068619_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "068619"}, "frames": ["2020-0226-101332_068619_movie_t-3.jpg", "2020-0226-101332_068619_movie_t-2.jpg", "2020-0226-101332_068619_movie_t-1.jpg", "2020-0226-101332_068619_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs straight between tall buildings, with three same-direction lanes and no physical median; the pavement is dry and intact, and traffic is heavy and mostly stationary. A silver van directly ahead in the ego lane is stopped because the traffic light ahead is red, holding the ego vehicle. To the left, a red taxi beside the ego car waits in the adjacent lane, inching forward with the queue and leaving limited lateral clearance. To the right, a silver minivan creeps alongside in the neighboring lane, slightly ahead and close to the ego car. The signal ahead remains red.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. Drivers should stop to maintain a safe distance and obey the red light signal."}
{"id": "train_01381", "split": "train", "clip_key": "2020-0220-151845_048269_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-151845_048269_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-151845_048269_movie_t-3_augB1.jpg", "2020-0220-151845_048269_movie_t-2_augB1.jpg", "2020-0220-151845_048269_movie_t-1_augB1.jpg", "2020-0220-151845_048269_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane road under an elevated expressway has smooth pavement with a central crack and heavy, slow traffic. A small construction area with barricades lines the left shoulder, and blue overhead direction signs span the road. A tarp-covered flatbed truck directly ahead in the ego lane creeps forward and sets the pace. A silver scooter cuts from the left lane into the ego lane near the truck because of congestion ahead, briefly entering the ego path. Cars queuing in the neighboring lanes move slowly alongside, reducing space for lane changes.", "hazard_reasoning": "There's a silver scooter cutting into the ego lane from the left lane, because of traffic congestion ahead. The scooter is merging unexpectedly into your lane due to congestion, so slowing down can help you avoid a collision and adjust to changing traffic flow."}
{"id": "train_01382", "split": "train", "clip_key": "2020-0225-145150_015574_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "015574"}, "frames": ["2020-0225-145150_015574_movie_t-3.jpg", "2020-0225-145150_015574_movie_t-2.jpg", "2020-0225-145150_015574_movie_t-1.jpg", "2020-0225-145150_015574_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban signalized intersection on a multi-lane road with dry pavement and a red-colored left lane shows heavy, stop-and-go traffic. A brown van is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle at a standstill. In the adjacent right same-direction lane a white van slightly ahead also queues forward slowly, remaining parallel to the ego path. On the left at a side street a bicyclist approaches the curb and waits, which may enter the roadway after the queue moves. The traffic light ahead displays an amber through signal with a green left-turn arrow.", "hazard_reasoning": "There is a brown van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver must stop to avoid a rear-end collision with the stationary vehicle ahead."}
{"id": "train_01383", "split": "train", "clip_key": "2020-0207-101955_121883_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "121883"}, "frames": ["2020-0207-101955_121883_movie_t-3.jpg", "2020-0207-101955_121883_movie_t-2.jpg", "2020-0207-101955_121883_movie_t-1.jpg", "2020-0207-101955_121883_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with a curbside lane beside a raised sidewalk; the pavement is dry and traffic is heavy and slow. A white van directly ahead in the ego lane is stopped at the curb, blocking the lane and holding the ego vehicle. In the adjacent lane to the left, a pink sanitation truck slightly ahead crawls forward with the queue and effectively passes the stopped van. Farther ahead in that same left lane, a large box truck inches along and sets the slow pace. Viaduct columns and a narrow shoulder line the right side, leaving little room beside the lane.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane. The driver should stop to avoid a rear-end collision with the halted vehicle."}
{"id": "train_01384", "split": "train", "clip_key": "2020-0228-102841_040937_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "040937"}, "frames": ["2020-0228-102841_040937_movie_t-3.jpg", "2020-0228-102841_040937_movie_t-2.jpg", "2020-0228-102841_040937_movie_t-1.jpg", "2020-0228-102841_040937_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with smooth asphalt and painted lane lines carries heavy, slow same-direction traffic between mid-rise buildings. The ego vehicle queues in the center lane as a white hatchback immediately ahead is stopped for a red signal, holding the lane. A scooter on the far left by the curb edges forward along the queue and may enter ahead of the ego car. White vans in the adjacent left and right lanes are also stopped or creeping beside the ego vehicle, constraining any lane change. An overhead signal shows red.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver must stop to avoid colliding with the halted vehicle at the red signal."}
{"id": "train_01385", "split": "train", "clip_key": "titan_clip_63_000054_movie", "source": {"subset": "titan", "scenario": "clip_63", "frame": "000054"}, "frames": ["titan_clip_63_000054_movie_t-3.jpg", "titan_clip_63_000054_movie_t-2.jpg", "titan_clip_63_000054_movie_t-1.jpg", "titan_clip_63_000054_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "A narrow urban two-way street with smooth pavement and no centerline or median is shown, and traffic is light with no moving vehicles nearby. Ahead on the right, there is construction work: a large trailer truck is parked beside a scaffolded building and lined with orange traffic cones, encroaching slightly into the roadway and constraining the ego path. Far ahead near the left edge, a lone pedestrian walks away along the street, not entering the ego lane.", "hazard_reasoning": "There is construction work on the right side, with a parked trailer truck and traffic cones. Driver should carefully manoeuvre around the partially obstructing truck to avoid collision and maintain lane positioning."}
{"id": "train_01386", "split": "train", "clip_key": "2020-0203-114632_067236_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "067236"}, "frames": ["2020-0203-114632_067236_movie_t-3.jpg", "2020-0203-114632_067236_movie_t-2.jpg", "2020-0203-114632_067236_movie_t-1.jpg", "2020-0203-114632_067236_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction is divided from oncoming lanes by a metal guardrail median; the pavement looks smooth and traffic is light with steady flow. A small flatbed truck runs slightly ahead in the adjacent right lane, continuing straight and slowly pulling away, limiting an immediate move to the right. A white van proceeds ahead in the ego lane at a constant pace, effectively setting the vehicle's speed. Across the median, a few cars approach in the opposite direction without interacting. An overhead traffic signal and roadside signs are visible at the next intersection, and no pedestrians or obstacles stand out.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01387", "split": "train", "clip_key": "2020-0214-145407_004345_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "004345"}, "frames": ["2020-0214-145407_004345_movie_t-3.jpg", "2020-0214-145407_004345_movie_t-2.jpg", "2020-0214-145407_004345_movie_t-1.jpg", "2020-0214-145407_004345_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the black sedan slowing ahead", "environment_perception": "An urban multi-lane two-way road runs under an elevated expressway, the pavement smooth and traffic moderate and flowing steadily. Ahead in the ego lane, a black sedan slows and shifts to the right to change lanes, briefly constraining our pace. Slightly farther ahead, a silver minivan in our lane continues straight at a steady speed. On the right side of the roadway, oncoming cars approach through the intersection but stay in their lanes and do not affect the ego vehicle.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane because it is switching to the right lane. Monitor its movement to avoid sudden braking or evasive action."}
{"id": "train_01388", "split": "train", "clip_key": "2020-0206-101736_058470_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "058470"}, "frames": ["2020-0206-101736_058470_movie_t-3.jpg", "2020-0206-101736_058470_movie_t-2.jpg", "2020-0206-101736_058470_movie_t-1.jpg", "2020-0206-101736_058470_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs beside an elevated structure with a right-side guardrail and dry, worn pavement, and same-direction traffic is heavy and mostly stopped. A cream minivan is stopped directly ahead in the ego lane due to congestion and blocks the path, holding the ego vehicle in place. To the left, a silver van in the adjacent same-direction lane inches forward with the queue alongside the ego car. Farther ahead in that left lane, a truck also waits in the jam and contributes to the slow flow. No oncoming traffic is visible.", "hazard_reasoning": "There is a cream minivan stopped in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should stop to avoid colliding with the stationary minivan due to congestion."}
{"id": "train_01389", "split": "train", "clip_key": "titan_clip_377_000576_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_377_000576_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_377_000576_movie_t-3_augB1.jpg", "titan_clip_377_000576_movie_t-2_augB1.jpg", "titan_clip_377_000576_movie_t-1_augB1.jpg", "titan_clip_377_000576_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the walking pedestrian.", "environment_perception": "An urban shopping street with a single narrow shared lane and block paving runs between storefronts; there is no centerline or divider, and no vehicular traffic is visible. The pavement appears smooth, and movement is slow due to pedestrians. A man in a white T-shirt ahead walks away from the ego vehicle along the middle of the roadway, using the ego lane because other pedestrians occupy the side walkway, so he remains directly in the path. Several people farther ahead on both sides stroll and intermittently cross, keeping to the travelway and potentially entering the ego path. On the right foreground, a man in a white shirt walks toward the camera at the curb, passing close to the lane. Parked bicycles and small cones line the edges.", "hazard_reasoning": "There is a man wearing a white t-shirt walking away from the ego car in the ego lane, because there are other pedestrians in the pedestrian lane. The pedestrian occupies the driving lane and could be struck unless the driver maneuvers carefully around the walking pedestrian."}
{"id": "train_01390", "split": "train", "clip_key": "2020-0131-103016_084230_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "084230"}, "frames": ["2020-0131-103016_084230_movie_t-3.jpg", "2020-0131-103016_084230_movie_t-2.jpg", "2020-0131-103016_084230_movie_t-1.jpg", "2020-0131-103016_084230_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with three same-direction lanes has worn but intact pavement and no visible median, and traffic is heavy with a queue toward an intersection ahead. A white minivan is stopped directly ahead in the ego lane because of congestion at the intersection, setting the pace. To the left, a green city bus in the adjacent lane creeps forward with the line of vehicles, parallel to the ego path and leaving little room to merge. On the right, a white van pulls up alongside while another darker van ahead in that lane remains stopped, boxing in the ego vehicle. An elevated rail station and fenced works line the left shoulder.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car, in the ego lane, because of the traffic congestion ahead at an intersection. The driver must stop to avoid a rear-end collision with the halted vehicle and the slowing traffic."}
{"id": "train_01391", "split": "train", "clip_key": "titan_clip_932_000510_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_932_000510_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_932_000510_movie_t-3_augB1.jpg", "titan_clip_932_000510_movie_t-2_augB1.jpg", "titan_clip_932_000510_movie_t-1_augB1.jpg", "titan_clip_932_000510_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial street with one lane in each direction, no median, and smooth pavement; traffic flow is moderate with steady oncoming vehicles. Parked cars line both curbs, creating a narrow corridor and occasional pinch points. A small blue truck is stopped just ahead along the left curb, protruding into the ego lane and slowing the approach. A man wearing a black T-shirt and black pants walks toward the ego along the left edge, stepping around the parked vehicle and briefly occupying part of the lane, so he may enter the ego path. Multiple cars and vans travel toward the camera in the right-side oncoming lane, passing continuously and limiting room to pull out.", "hazard_reasoning": "There is a man wearing a black T-shirt and black pants and walking on the left side of the street, toward the ego car, because of the parked vehicle. The driver should carefully manoeuvre around him to avoid a potential collision."}
{"id": "train_01392", "split": "train", "clip_key": "titan_clip_300_000906_movie", "source": {"subset": "titan", "scenario": "clip_300", "frame": "000906"}, "frames": ["titan_clip_300_000906_movie_t-3.jpg", "titan_clip_300_000906_movie_t-2.jpg", "titan_clip_300_000906_movie_t-1.jpg", "titan_clip_300_000906_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "A narrow urban two-way street without a median and with smooth pavement shows very light traffic. Ahead on the left curb a white box truck is parked with its rear open unloading, protruding slightly into the ego vehicle's path and narrowing the passage. On the right, a silver van sits parked in a recessed space and remains stationary, posing no conflict. No oncoming vehicles are visible and the lane ahead is otherwise clear. No traffic signals or speed signs are seen. Cones and stacked items on the left sidewalk mark the unloading area and add minor roadside clutter.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is unloading. The parked truck partially blocks the lane and limits visibility, so the driver should navigate around it cautiously in line with the warning suggestion."}
{"id": "train_01393", "split": "train", "clip_key": "titan_clip_249_000558_movie", "source": {"subset": "titan", "scenario": "clip_249", "frame": "000558"}, "frames": ["titan_clip_249_000558_movie_t-3.jpg", "titan_clip_249_000558_movie_t-2.jpg", "titan_clip_249_000558_movie_t-1.jpg", "titan_clip_249_000558_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the stopped truck.", "environment_perception": "An urban narrow two-way street approaches a cross street, the pavement is in good condition and traffic is light, with buildings close to the curb limiting sight lines at the junction. To the left beside the ego-vehicle, a white truck is stopped while two workmen examine it, narrowing the lane and slowing the approach to the stop line. Ahead near the truck's rear, one worker walks in the lane toward the intersection and may step into the ego path. On the right at the near corner, a woman pushing a bicycle moves along the sidewalk toward the crossing and could enter the intersection. A triangular Japanese stop sign on the left marks the junction.", "hazard_reasoning": "There is a white truck stopped in the left lane, beside the ego-car, because there are workmen examining it. The stopped truck and nearby workmen create an obstacle in the travel lane, so the driver should navigate cautiously to avoid collision."}
{"id": "train_01394", "split": "train", "clip_key": "titan_clip_1056_000438_movie", "source": {"subset": "titan", "scenario": "clip_1056", "frame": "000438"}, "frames": ["titan_clip_1056_000438_movie_t-3.jpg", "titan_clip_1056_000438_movie_t-2.jpg", "titan_clip_1056_000438_movie_t-1.jpg", "titan_clip_1056_000438_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban street with one moving lane runs between tall buildings; the pavement is smooth and traffic is light, with several vehicles stopped along the right edge that narrow the lane. Ahead on the right, a pedestrian in a white shirt walks in the roadway toward the ego vehicle because a vehicle blocks the sidewalk, occupying the edge of the ego lane. Beside him at the right curb, a white station wagon is stopped and protrudes into the lane, obstructing the walkway. Farther ahead in the same direction, a gray van proceeds slowly and sets the ego vehicle's pace. A no-parking sign is posted on the left.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the right side of the road towards the ego car, because a vehicle is blocking the sidewalk. The driver should stop to allow the pedestrian to pass safely and avoid collision due to the sidewalk obstruction."}
{"id": "train_01395", "split": "train", "clip_key": "titan_clip_262_000354_movie", "source": {"subset": "titan", "scenario": "clip_262", "frame": "000354"}, "frames": ["titan_clip_262_000354_movie_t-3.jpg", "titan_clip_262_000354_movie_t-2.jpg", "titan_clip_262_000354_movie_t-1.jpg", "titan_clip_262_000354_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street runs between tall buildings, the single lane smooth and dry with light traffic as the ego car creeps forward. Ahead in the same lane, a white van moves away slowly and sets the pace. As noted, on the right sidewalk close to the camera, a pedestrian in a white top walks toward the vehicle while looking at a phone but stays off the roadway. On the left edge near orange cones, a pedestrian walks toward the ego vehicle along the roadway and could step into the lane. Farther left by a convenience store, a person stands beside a motorcycle at the curb without entering traffic. A red triangular stop sign is visible at the next intersection, and parked bicycles and the cones narrow the space on the left.", "hazard_reasoning": "There is a pedestrian wearing white shirt and black suit, walking towards the ego car,on the left side of the road. The pedestrian could enter the vehicle's path unexpectedly, so the driver should slow down to maintain a safe distance."}
{"id": "train_01396", "split": "train", "clip_key": "2020-0227-104226_057585_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "057585"}, "frames": ["2020-0227-104226_057585_movie_t-3.jpg", "2020-0227-104226_057585_movie_t-2.jpg", "2020-0227-104226_057585_movie_t-1.jpg", "2020-0227-104226_057585_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of crossing pedestrian", "environment_perception": "A suburban residential two-lane road with a solid yellow centerline and dry, smooth pavement runs straight ahead; traffic is light and steady. On the far right edge of the opposing side, a cyclist rides away along the curb, remaining outside the ego lane and not constraining its path. An oncoming white car approaches mid-distance in the right lane, keeping to its side of the centerline. On the left side near the next intersection, a pedestrian wearing black pants and a black shirt crosses the street walking away from the ego vehicle, and may step into the ego lane as they clear the near side. No traffic signals are prominent, and several parked vehicles sit behind a fence on the right.", "hazard_reasoning": "There is a pedestrian wearing black pants and a black shirt, crossing the street at the left side of the intersection, walking away from the ego car. The driver should be aware because the pedestrian may step into the driving lane unexpectedly, creating a collision risk."}
{"id": "train_01397", "split": "train", "clip_key": "titan_clip_674_000288_movie", "source": {"subset": "titan", "scenario": "clip_674", "frame": "000288"}, "frames": ["titan_clip_674_000288_movie_t-3.jpg", "titan_clip_674_000288_movie_t-2.jpg", "titan_clip_674_000288_movie_t-1.jpg", "titan_clip_674_000288_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist ahead", "environment_perception": "An urban backstreet with a single narrow two-way lane, no median, and intact asphalt; traffic is light with no moving cars. Ahead on the right, a cyclist wearing a black T-shirt rides toward the ego vehicle along the curb, moving steadily and narrowing the available space in the ego lane. Parked cars are recessed on the right, and a convex safety mirror stands by a driveway, creating a partial blind area but no immediate obstruction.", "hazard_reasoning": "There is a cyclist wearing a black t-shirt, cycling on the right side of the road, towards the ego car. The cyclist could move into the vehicle's path or slow unexpectedly, so the driver should be aware and monitor their position closely."}
{"id": "train_01398", "split": "train", "clip_key": "2020-0228-150133_015932_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "015932"}, "frames": ["2020-0228-150133_015932_movie_t-3.jpg", "2020-0228-150133_015932_movie_t-2.jpg", "2020-0228-150133_015932_movie_t-1.jpg", "2020-0228-150133_015932_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane per direction runs between apartment blocks and a fenced walkway; the pavement is smooth and traffic is halted. A gray van directly ahead in the ego lane is stationary at the crosswalk, stopped because of congestion ahead, and it blocks the ego car's path. A large delivery truck stands along the left curb beside the van, stopped and encroaching slightly, which narrows the available space and further constrains movement. No pedestrians are on the crosswalk and no oncoming vehicles are visible.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, because of traffic congestion ahead. The van's sudden stop could force the driver to brake urgently, so stopping now will help maintain a safe distance."}
{"id": "train_01399", "split": "train", "clip_key": "2020-0129-144857_080999_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "080999"}, "frames": ["2020-0129-144857_080999_movie_t-3.jpg", "2020-0129-144857_080999_movie_t-2.jpg", "2020-0129-144857_080999_movie_t-1.jpg", "2020-0129-144857_080999_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth pavement and a narrow median and guardrail to the right carries heavy traffic queued at a signalized intersection. A white sedan directly ahead in the ego lane is stopped because the traffic light shows red, holding the ego vehicle. To the left, a red bus and several trucks wait in the adjacent same-direction lane, queuing at the same light and limiting forward visibility. Farther ahead to the right, a black SUV in a separated side lane creeps toward the junction without merging. Overhead traffic signals display red.", "hazard_reasoning": "A white sedan is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to avoid a collision with the halted vehicle at the red light."}
{"id": "train_01400", "split": "train", "clip_key": "2020-0205-103411_010627_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-103411_010627_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-103411_010627_movie_t-3_augB1.jpg", "2020-0205-103411_010627_movie_t-2_augB1.jpg", "2020-0205-103411_010627_movie_t-1_augB1.jpg", "2020-0205-103411_010627_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing ahead", "environment_perception": "An urban scene shows a two-way road approaching a signalized intersection, with smooth pavement and light traffic. The ego vehicle travels in the left lane and there is no physical median. A pedestrian wearing a black shirt crosses mid-road ahead from left to right, moving into the ego lane and likely constraining the approach. A black van is ahead to the right at the curb just past the crosswalk area, appearing stopped and potentially merging later. Several oncoming cars in the opposing right-side lane proceed straight through the junction at a steady pace. Overhead traffic lights span the road, and storefronts line both sides with bicycles and scooters parked along the sidewalks.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, crossing the street in the middle of the road, from the left side to the right side. The pedestrian may enter the vehicle's path unexpectedly, so the driver should be aware to prevent a collision."}
{"id": "train_01401", "split": "train", "clip_key": "2020-0207-101955_076871_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "076871"}, "frames": ["2020-0207-101955_076871_movie_t-3.jpg", "2020-0207-101955_076871_movie_t-2.jpg", "2020-0207-101955_076871_movie_t-1.jpg", "2020-0207-101955_076871_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway segment with high sound walls and concrete barriers appears, carrying two same-direction lanes with dry, smooth pavement and light traffic. Directly ahead in the ego lane, a blue flatbed truck slows, as it is constrained by a truck slowing further ahead. Farther ahead in the same lane, a white utility truck with a crane rig reduces speed under a pedestrian overpass, setting the pace for following vehicles. A striped buffer with red flexible posts lines the right side, narrowing the usable roadway but remaining clear.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The driver needs to slow down to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_01402", "split": "train", "clip_key": "2020-0204-103442_016988_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "016988"}, "frames": ["2020-0204-103442_016988_movie_t-3.jpg", "2020-0204-103442_016988_movie_t-2.jpg", "2020-0204-103442_016988_movie_t-1.jpg", "2020-0204-103442_016988_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane same-direction road runs beneath an elevated expressway, with a concrete barrier on the right and a sidewalk and buildings on the left; the pavement is dry and intact, and traffic moves heavily and slowly. A white SUV directly ahead in the ego lane slows because of congestion, setting the ego car's pace. In the adjacent left lane, a red hatchback draws alongside and continues slowly, constraining any leftward lane change. Farther ahead in the left lane, a small white van and a larger bus queue and creep forward, reinforcing the bottleneck. No-stopping signs line the left sidewalk, and overhead green direction boards span the roadway.", "hazard_reasoning": "A white SUV is slowing in front of the ego car in the ego lane, because of traffic congestion. Drivers should slow down to maintain a safe following distance and avoid collisions when the vehicle ahead decelerates."}
{"id": "train_01403", "split": "train", "clip_key": "2020-0221-115122_005458_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "005458"}, "frames": ["2020-0221-115122_005458_movie_t-3.jpg", "2020-0221-115122_005458_movie_t-2.jpg", "2020-0221-115122_005458_movie_t-1.jpg", "2020-0221-115122_005458_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "A dense urban arterial with smooth pavement and no visible median carries heavy, stop-and-go same-direction traffic in at least two lanes, with the ego in the leftmost lane. Directly ahead in the ego lane, a silver sedan is stopped because congestion blocks the way, controlling the ego vehicle's pace. In the adjacent right lane, a white hatchback runs nearly parallel at a crawl without edging toward the ego lane. Farther ahead to the right, a line of vans and trucks also queues nearly stationary, extending the jam. Parked vehicles and bicycles line the left curb while pedestrians remain on the sidewalk.", "hazard_reasoning": "There is a silver sedan stopped in the ego lane, because of the traffic congestion ahead. The driver should stop because the vehicle ahead is stationary and may cause a collision if not slowed in time."}
{"id": "train_01404", "split": "train", "clip_key": "2020-0220-102630_106956_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "106956"}, "frames": ["2020-0220-102630_106956_movie_t-3.jpg", "2020-0220-102630_106956_movie_t-2.jpg", "2020-0220-102630_106956_movie_t-1.jpg", "2020-0220-102630_106956_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane each way passes low-rise buildings; the pavement is dry with a solid yellow centerline and chevroned shoulder, and traffic appears light. A white box truck directly ahead in the ego lane is stopped, waiting at a red light, holding the ego vehicle. An oncoming car continues along the opposite lane farther ahead without interacting. Two pedestrians are on the right sidewalk near storefronts, remaining off the roadway.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of red traffic lights. The truck's stationary position due to the red signal blocks the lane ahead and requires the driver to stop to avoid a rear-end collision."}
{"id": "train_01405", "split": "train", "clip_key": "titan_clip_673_000294_movie", "source": {"subset": "titan", "scenario": "clip_673", "frame": "000294"}, "frames": ["titan_clip_673_000294_movie_t-3.jpg", "titan_clip_673_000294_movie_t-2.jpg", "titan_clip_673_000294_movie_t-1.jpg", "titan_clip_673_000294_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "be aware of cyclist ahead", "environment_perception": "An urban backstreet approaches a very narrow railway level crossing, the lane squeezed between a green fence on the left and buildings on the right; pavement is worn and traffic is light. Ahead in the ego lane, a cyclist in a white T-shirt and blue pants rides away along the fenced corridor, moving straight and effectively setting the ego vehicle's pace. Near the crossing, a pedestrian stands on the left by the gate and another waits on the right shoulder close to the travel path. A white van is stationary by the tracks to the far left beyond the crossing. Crossing signals and gates are visible ahead, and a covered car is parked off the roadway to the right.", "hazard_reasoning": "a cyclist wearing a white t-shirt with blue pant is cycling away from the ego car because of the fences. The cyclist may change course unpredictably due to the constraining fences, so the driver should be aware of the cyclist ahead."}
{"id": "train_01406", "split": "train", "clip_key": "titan_clip_401_000294_movie", "source": {"subset": "titan", "scenario": "clip_401", "frame": "000294"}, "frames": ["titan_clip_401_000294_movie_t-3.jpg", "titan_clip_401_000294_movie_t-2.jpg", "titan_clip_401_000294_movie_t-1.jpg", "titan_clip_401_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with interlocking pavers and no median runs between buildings; pavement appears good and vehicle traffic is light but slow. A silver box truck ahead in the ego lane moves slowly near the center and sets the pace. A pedestrian wearing a white shirt and black pants carries a plastic bag while walking along the left edge away from the ego car, keeping to the curb. Farther ahead, a bicyclist rides away near the centerline, sharing the lane in front of the truck. Parked vehicles line both sides and a side street opens on the left. A roadside convex mirror on the left and a red-bordered blue restriction sign on the right are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a plastic bag, and walking on the left side of the road, away from the ego car. The pedestrian could step into the roadway unexpectedly, so the driver should slow down to avoid a potential collision."}
{"id": "train_01407", "split": "train", "clip_key": "titan_clip_907_000150_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_907_000150_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_907_000150_movie_t-3_augB1.jpg", "titan_clip_907_000150_movie_t-2_augB1.jpg", "titan_clip_907_000150_movie_t-1_augB1.jpg", "titan_clip_907_000150_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian in roadway", "environment_perception": "A dense urban two-lane street is under construction, the pavement dry and the left side partially blocked by a stopped work truck; traffic is very light with no moving vehicles immediately ahead. Ahead in the middle of the road, a pedestrian in black pants, a blue shirt, a white vest, and a white helmet walks away from the ego car, diverted by the construction on the left and occupying the ego path. The flatbed truck sits ahead left with workers around its rear directing activity and narrowing the lane, limiting passage. Another worker on the near left steps from the sidewalk toward the roadway, encroaching on the lane. Orange fencing, cones, and work materials line the right, forming a tight corridor.", "hazard_reasoning": "There is a pedestrian wearing black pants, a blue shirt, a white vest, and a white helmet, walking in the middle of the road, away from the ego car, because of the construction work on the left. The driver should yield to avoid colliding with the pedestrian forced into the travel lane by the construction zone."}
{"id": "train_01408", "split": "train", "clip_key": "2020-0218-151547_014409_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "014409"}, "frames": ["2020-0218-151547_014409_movie_t-3.jpg", "2020-0218-151547_014409_movie_t-2.jpg", "2020-0218-151547_014409_movie_t-1.jpg", "2020-0218-151547_014409_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement approaches a wide signalized intersection, and traffic is moderate with vehicles moving in the same direction. A white hatchback is stopped directly ahead in the ego lane, holding at the junction and setting the ego car's pace. Ahead-left near the curb, a scooter moves slowly straight and could drift toward the ego lane as space opens. To the right, a large bus in the adjacent lane proceeds alongside the ego vehicle, limiting lateral space. Strong backlighting from the low sun creates noticeable glare.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car. The driver should stop to avoid a rear-end collision with the stationary vehicle."}
{"id": "train_01409", "split": "train", "clip_key": "2020-0131-135401_004596_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "004596"}, "frames": ["2020-0131-135401_004596_movie_t-3.jpg", "2020-0131-135401_004596_movie_t-2.jpg", "2020-0131-135401_004596_movie_t-1.jpg", "2020-0131-135401_004596_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single lane each way and smooth pavement runs between buildings; traffic is light but the ego lane is blocked. A white box truck is stopped directly ahead in the ego lane, blocking the ego car's path. On the left edge near the curb, several pedestrians walk toward the camera on the raised sidewalk beside the truck, close to the roadway where the lane narrows. Farther ahead on the left sidewalk, another pedestrian walks away and remains clear of traffic. No oncoming vehicles are visible in the opposing lane. An overhead sign posts a 40 speed limit.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. Since the truck has halted ahead, you need to stop to avoid a rear-end collision."}
{"id": "train_01410", "split": "train", "clip_key": "titan_clip_927_000192_movie", "source": {"subset": "titan", "scenario": "clip_927", "frame": "000192"}, "frames": ["titan_clip_927_000192_movie_t-3.jpg", "titan_clip_927_000192_movie_t-2.jpg", "titan_clip_927_000192_movie_t-1.jpg", "titan_clip_927_000192_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "A dense urban commercial street with trees borders a narrow two-way road without a median; the pavement is smooth and traffic is light, slowing near curbside activity. A dark sedan ahead in the ego lane moves slowly, constrained by a white box truck stopped along the left curb because it is being unloaded, with cones jutting into the lane. On the right, two men work at the open hatch of a parked car close to the curb and stand near the travel lane, potentially stepping out. Also on the right sidewalk, a person holds a bicycle beside the curb and may enter the street. Parked vehicles line both sides, including a small flatbed immediately to the left, which tightens clearance as the ego vehicle passes.", "hazard_reasoning": "There is a white truck stopped on the left side of the road, because it is being unloaded. The stopped truck partially obstructs the lane, requiring the driver to navigate carefully to avoid collision."}
{"id": "train_01411", "split": "train", "clip_key": "2020-0228-102841_092380_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "092380"}, "frames": ["2020-0228-102841_092380_movie_t-3.jpg", "2020-0228-102841_092380_movie_t-2.jpg", "2020-0228-102841_092380_movie_t-1.jpg", "2020-0228-102841_092380_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction runs between close-set buildings, marked by a yellow centerline and a left-side safety rail; the dry pavement is in good condition and same-direction traffic is stopped. A white sedan directly ahead in the ego lane is halted in a queue, constraining the ego vehicle's movement due to congestion. Farther ahead in the same lane, a tall white van is also stationary, reinforcing the backup. No oncoming vehicles are visible in the opposite lane. A motorcycle is parked at the right curb and remains outside the travel lane.", "hazard_reasoning": "There is a white Sedan stopped in front of the ego car in the left lane, because of traffic congestion. The driver should stop to avoid a collision with the halted vehicle ahead."}
{"id": "train_01412", "split": "train", "clip_key": "2020-0226-101332_024216_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "024216"}, "frames": ["2020-0226-101332_024216_movie_t-3.jpg", "2020-0226-101332_024216_movie_t-2.jpg", "2020-0226-101332_024216_movie_t-1.jpg", "2020-0226-101332_024216_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth pavement carries moderate traffic that is queued and stopped at an intersection under a red signal. Ahead in the ego lane, a black tarp-covered truck is stopped at the light, directly blocking the ego vehicle's path. In the lane to the left, a silver van is also stopped alongside and slightly ahead, maintaining the queue and limiting any lane change. On the right edge, road workers stand beside a coned-off work area with small trucks, remaining outside the travel lane. The overhead traffic light shows red, and cones and parked work vehicles narrow the right side near the curb.", "hazard_reasoning": "There is a black truck stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop because the blocked lane ahead requires halting to comply with the red signal and avoid collision."}
{"id": "train_01413", "split": "train", "clip_key": "2020-0214-145407_050537_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "050537"}, "frames": ["2020-0214-145407_050537_movie_t-3.jpg", "2020-0214-145407_050537_movie_t-2.jpg", "2020-0214-145407_050537_movie_t-1.jpg", "2020-0214-145407_050537_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban left-hand-traffic multilane road runs under an elevated expressway toward a signalized intersection; the pavement is dry and traffic is light with vehicles queued at the stop line. A black sedan ahead in the ego lane is stopped because the traffic light at the intersection shows red, holding the ego vehicle. A red taxi slightly ahead in the lane to the left is also stopped at the light, remaining alongside and likely to start with us. Across the intersection on the right, several trucks wait near the curb and in the opposite approach without affecting our path. Overhead signals clearly display red for our approach.", "hazard_reasoning": "There is a black sedan stopped in the ego lane because of the red traffic light ahead at the intersection. The driver should stop to avoid rear-ending the stopped vehicle and comply with the red signal."}
{"id": "train_01414", "split": "train", "clip_key": "titan_clip_1236_000216_movie", "source": {"subset": "titan", "scenario": "clip_1236", "frame": "000216"}, "frames": ["titan_clip_1236_000216_movie_t-3.jpg", "titan_clip_1236_000216_movie_t-2.jpg", "titan_clip_1236_000216_movie_t-1.jpg", "titan_clip_1236_000216_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential scene shows a narrow two-way road without a centerline; the pavement is smooth and traffic is light, with a green bike strip and bollards along the right edge. A pedestrian ahead at the right curb waits to cross in front of the ego car, potentially entering the lane. A white van approaches in the distance on the opposite side, continuing straight and not constraining the ego vehicle yet. Another person remains on the left sidewalk near parked bicycles, staying off the roadway. No traffic signals or legible speed signs are visible, and the lane itself is clear of obstacles.", "hazard_reasoning": "There is a pedestrian wearing black pants and waiting to cross, on the left side of the road, in front of the ego-car. The driver should slow down to anticipate the pedestrian crossing and avoid a potential collision."}
{"id": "train_01415", "split": "train", "clip_key": "titan_clip_216_000042_movie", "source": {"subset": "titan", "scenario": "clip_216", "frame": "000042"}, "frames": ["titan_clip_216_000042_movie_t-3.jpg", "titan_clip_216_000042_movie_t-2.jpg", "titan_clip_216_000042_movie_t-1.jpg", "titan_clip_216_000042_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban side street with a narrow single-lane carriageway and block-paved surface runs between tall buildings, with no center divider visible and light traffic. Parked vehicles line both curbs and pinch the lane. Near the right curb ahead, a pedestrian pushing a stroller walks toward the ego car beside a black SUV and may step into the travel path. Farther ahead in the center-left, a cyclist rides away in the same direction at low speed, likely constraining the pace. Slightly ahead near the right edge, a small mobility scooter moves slowly along the curb in the same direction, reducing passing room. No signals or posted limits are visible.", "hazard_reasoning": "There is a pedestrian pushing a stroller, walking on the right side of the road, towards the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a collision and ensure safety."}
{"id": "train_01416", "split": "train", "clip_key": "2020-0204-103442_040409_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "040409"}, "frames": ["2020-0204-103442_040409_movie_t-3.jpg", "2020-0204-103442_040409_movie_t-2.jpg", "2020-0204-103442_040409_movie_t-1.jpg", "2020-0204-103442_040409_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane road runs beneath an elevated structure with a guardrail on the right; the pavement is dry and traffic is heavy, currently stopped. A white bus directly ahead in the ego lane is stopped and blocks the ego vehicle's path. In the adjacent lane to the left, a box truck is also stopped alongside, preventing an immediate lane change.", "hazard_reasoning": "There is a white bus stopped in front of the ego car. Drivers should stop to avoid colliding with the stationary bus directly ahead."}
{"id": "train_01417", "split": "train", "clip_key": "2020-0220-102630_086114_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "086114"}, "frames": ["2020-0220-102630_086114_movie_t-3.jpg", "2020-0220-102630_086114_movie_t-2.jpg", "2020-0220-102630_086114_movie_t-1.jpg", "2020-0220-102630_086114_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes passes shops, separated from oncoming lanes by a fenced median; the pavement is dry and intact, and traffic in the ego's direction is heavy and slow. Ahead in the ego lane, a white minivan slows because congestion compresses the flow, constraining the ego car's pace. Slightly ahead to the left, a silver box truck in the neighboring lane also creeps forward in the queue, staying roughly alongside the ego path. At the far left, a black sedan proceeds cautiously near the curb, continuing straight without signaling or merging. Overhead gantry signs with Japanese guidance span the roadway.", "hazard_reasoning": "There is a white minivan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. Therefore, slow down to maintain a safe distance due to reduced traffic flow."}
{"id": "train_01418", "split": "train", "clip_key": "titan_clip_1030_000198_movie", "source": {"subset": "titan", "scenario": "clip_1030", "frame": "000198"}, "frames": ["titan_clip_1030_000198_movie_t-3.jpg", "titan_clip_1030_000198_movie_t-2.jpg", "titan_clip_1030_000198_movie_t-1.jpg", "titan_clip_1030_000198_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking on right side", "environment_perception": "An urban shopping street with block-paved surface and no lane markings runs between close storefronts, and traffic is light and slow. On the right edge near the camera's path, a pedestrian wearing a striped shirt walks away along the curb, parallel to traffic and close to the roadway. Ahead near the middle of the street, two pedestrians walk away in the lane, occupying the travel path. A small covered truck is stopped at the right curb further ahead with its rear facing the street, narrowing the passage. A white van ahead in the same direction creeps forward near the center, setting a slow pace.", "hazard_reasoning": "A pedestrian wearing a striped shirt is walking on the right side of the road, away from the ego car. The pedestrian's proximity to the roadway edge could result in unexpected movement into the vehicle's path, so the driver should be aware."}
{"id": "train_01419", "split": "train", "clip_key": "titan_clip_1245_000102_movie", "source": {"subset": "titan", "scenario": "clip_1245", "frame": "000102"}, "frames": ["titan_clip_1245_000102_movie_t-3.jpg", "titan_clip_1245_000102_movie_t-2.jpg", "titan_clip_1245_000102_movie_t-1.jpg", "titan_clip_1245_000102_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around him", "environment_perception": "A narrow urban commercial side street with a single lane and no center divider runs between shopfronts and red-white guardrails; the pavement is dry and smooth, and traffic is light. A white truck is stopped ahead in the ego lane, partially blocking the roadway and controlling the pace. Ahead near the truck, a man in black trousers, a T-shirt, and shoes stands in the ego lane as he unloads the vehicle, occupying the path and potentially entering the vehicle's line of travel. No oncoming vehicles are visible and sidewalks are mostly clear.", "hazard_reasoning": "There is a man wearing a pair of black trousers, a T-shirt, and shoes, standing in the ego lane because he is unloading the white truck. The pedestrian unloading the truck occupies the driving lane and may step into the vehicle's path, so the driver should carefully manoeuvre around him."}
{"id": "train_01420", "split": "train", "clip_key": "titan_clip_431_000180_movie", "source": {"subset": "titan", "scenario": "clip_431", "frame": "000180"}, "frames": ["titan_clip_431_000180_movie_t-3.jpg", "titan_clip_431_000180_movie_t-2.jpg", "titan_clip_431_000180_movie_t-1.jpg", "titan_clip_431_000180_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "An urban two-way street with one lane each direction and a solid yellow centerline runs between mid-rise buildings; the pavement is dry and traffic is moderate. A gray van is parked along the left curb beside the ego lane, narrowing the margin. Ahead in the ego lane, a dark sedan and a light van travel slowly in a short queue, constraining the ego vehicle's speed. In the oncoming lane to the right, a city bus by the curb approaches slowly while staying within its lane. Additional cars are visible farther ahead in both directions, and no distinctive traffic signals or signs are prominent.", "hazard_reasoning": "There is a gray van parked on the left side of the road. The parked van partially obstructs the lane and may require maneuvering to maintain safe clearance."}
{"id": "train_01421", "split": "train", "clip_key": "2020-0207-101955_078833_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "078833"}, "frames": ["2020-0207-101955_078833_movie_t-3.jpg", "2020-0207-101955_078833_movie_t-2.jpg", "2020-0207-101955_078833_movie_t-1.jpg", "2020-0207-101955_078833_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban roadway with two same-direction lanes runs between guardrails, the pavement is smooth, and traffic is light with clear sightlines. A blue flatbed truck is ahead in the ego lane and gradually pulls away because the lane in front of it is clear, modestly setting the ego car's pace. Farther ahead in the right lane, a white box truck travels steadily and remains separate from the ego lane. Overhead blue guide signs are visible in the distance, and no hazards or obstructions appear.", "hazard_reasoning": "There is a blue truck driving away from the ego car, in the ego lane in front of the ego car, because the road ahead is clear. The driver should be aware of this vehicle as it may slow or brake unexpectedly, requiring prompt reaction."}
{"id": "train_01422", "split": "train", "clip_key": "2020-0203-154554_075345_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "075345"}, "frames": ["2020-0203-154554_075345_movie_t-3.jpg", "2020-0203-154554_075345_movie_t-2.jpg", "2020-0203-154554_075345_movie_t-1.jpg", "2020-0203-154554_075345_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each way and a painted center line runs between mid-rise buildings; the pavement is dry and traffic is moderate under strong sun glare. Ahead in the ego lane, an orange hatchback slows and sets the pace for the ego vehicle. To the right, a white compact car approaches in the oncoming lane at a steady speed, remaining separated by the center line. Along the left curb, a white sedan is parked just off the lane. An overhead signal gantry spans the roadway and a 50 speed marking is painted on the pavement, though the signal aspects are obscured by glare.", "hazard_reasoning": "There is an orange hatchback slowing in front of the ego car, in the ego lane. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01423", "split": "train", "clip_key": "titan_clip_1218_000390_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1218_000390_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1218_000390_movie_t-3_augB1.jpg", "titan_clip_1218_000390_movie_t-2_augB1.jpg", "titan_clip_1218_000390_movie_t-1_augB1.jpg", "titan_clip_1218_000390_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street forms a single shared lane with smooth dry pavement and light vehicle traffic as the ego car proceeds slowly. Ahead on the left, a pedestrian in a white shirt walks away in the roadway to get around a parked light truck, which occupies part of the lane and reduces the available space. Farther ahead near the middle of the lane, another pedestrian also walks away in the same direction, remaining in the ego path. On the right edge by storefronts, a woman walks toward the camera along the raised curb close to the roadway. The parked truck creates a pinch point.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the left side of the road, away from the ego car, because of a parked vehicle. The obstructed view caused by the parked truck increases the risk of the pedestrian entering the driving lane unexpectedly, so the driver should slow down to maintain safe stopping distance."}
{"id": "train_01424", "split": "train", "clip_key": "titan_clip_306_000876_movie", "source": {"subset": "titan", "scenario": "clip_306", "frame": "000876"}, "frames": ["titan_clip_306_000876_movie_t-3.jpg", "titan_clip_306_000876_movie_t-2.jpg", "titan_clip_306_000876_movie_t-1.jpg", "titan_clip_306_000876_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian ahead", "environment_perception": "A narrow urban commercial street with a single shared lane is paved with interlocking bricks and has no divider; traffic is light and slow with vehicles standing along both curbs. On the left side near the shops, a pedestrian wearing a white shirt and a cap walks toward the ego vehicle along the edge, close enough to potentially enter the lane. Ahead in the middle of the roadway, another pedestrian walks away in the same direction, occupying the lane and constraining the ego vehicle's pace. On the right, a parked delivery truck with its rear open protrudes into the lane, creating a pinch point beside a white van standing along the left curb and further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and a cap, walking along the left side of the road toward the ego car. Limited visibility due to the parked truck may hide sudden pedestrian movements, so the driver should be aware of the pedestrian ahead."}
{"id": "train_01425", "split": "train", "clip_key": "2020-0226-140503_056133_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "056133"}, "frames": ["2020-0226-140503_056133_movie_t-3.jpg", "2020-0226-140503_056133_movie_t-2.jpg", "2020-0226-140503_056133_movie_t-1.jpg", "2020-0226-140503_056133_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Yield to the cyclist in the crosswalk", "environment_perception": "An urban intersection in a city setting shows a side street feeding into a multi-lane divided arterial with a planted median; the pavement appears damp and traffic flows at a moderate pace to the right. On the left foreground, a cyclist wearing black pants and a backpack rides across the zebra crosswalk away from the ego vehicle, clearing the near corner. Ahead to the right, a small stream of cars and white vans proceeds through the junction in the same direction, occupying the lanes the side street feeds into and setting the available gap. An overhead pedestrian footbridge spans the roadway, with guardrails lining the corner; no salient traffic signals are clearly visible.", "hazard_reasoning": "There's a cyclist, carrying a backpack, wearing black pants, crossing the street in a crosswalk, on the left side of the road, away from the ego car. The driver should yield because the cyclist is crossing in the marked crosswalk ahead and may enter the vehicle's path."}
{"id": "train_01426", "split": "train", "clip_key": "2020-0207-101955_018177_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_018177_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_018177_movie_t-3_augB1.jpg", "2020-0207-101955_018177_movie_t-2_augB1.jpg", "2020-0207-101955_018177_movie_t-1_augB1.jpg", "2020-0207-101955_018177_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban four-lane two-way road runs between mid-rise buildings, divided only by painted center lines; the pavement is worn but intact and traffic is moderate. Ahead in the left-side ego lane, a white mini truck slows, constraining the ego vehicle's pace. To the right, an oncoming white van approaches in the opposite-direction lane and continues straight past. Farther ahead in the oncoming stream, a silver car follows the van toward us. Bags of trash rest on the left sidewalk behind a railing, away from the roadway.", "hazard_reasoning": "There is a white mini truck slowing in the ego lane, in front of the ego car. The truck's reduced speed may require the driver to adjust their speed to maintain a safe following distance, warranting a slowdown."}
{"id": "train_01427", "split": "train", "clip_key": "titan_clip_929_000306_movie", "source": {"subset": "titan", "scenario": "clip_929", "frame": "000306"}, "frames": ["titan_clip_929_000306_movie_t-3.jpg", "titan_clip_929_000306_movie_t-2.jpg", "titan_clip_929_000306_movie_t-1.jpg", "titan_clip_929_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "In a dense urban area, the ego vehicle pauses at a small intersection on a narrow two-lane road with no median and smooth pavement; traffic is light with no moving same-direction or oncoming vehicles. Ahead at the near crosswalk, a man crosses from right to left toward the corner, occupying the ego lane and constraining progress. On the right curb, a small white delivery truck is stopped, and a pedestrian in a black shirt and black pants walks around it away from the ego car near the roadway edge. At the near-left corner, two pedestrians wait at the curb by the crosswalk, close to the ego path. A blue straight-ahead arrow sign stands on the corner.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants, and walking around a truck on the left side of the road, away from the ego car. Under these conditions, the driver should slow down because the pedestrian may step into the roadway from behind the truck, posing a collision risk."}
{"id": "train_01428", "split": "train", "clip_key": "2020-0204-150838_033991_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "033991"}, "frames": ["2020-0204-150838_033991_movie_t-3.jpg", "2020-0204-150838_033991_movie_t-2.jpg", "2020-0204-150838_033991_movie_t-1.jpg", "2020-0204-150838_033991_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A dense urban arterial with three same-direction lanes runs between tall buildings; the pavement is dry and traffic moves in slow stop-and-go waves. A white van directly ahead in the ego lane pulls away from a stop and accelerates, setting the ego vehicle's pace. In the right adjacent lane, another white van slightly ahead continues straight and edges past at a steadier speed. On the left, a black taxi just behind creeps forward alongside without changing lanes. Farther ahead in the left lane, a light-colored minivan proceeds straight while keeping its distance.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01429", "split": "train", "clip_key": "2020-0129-105040_006275_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "006275"}, "frames": ["2020-0129-105040_006275_movie_t-3.jpg", "2020-0129-105040_006275_movie_t-2.jpg", "2020-0129-105040_006275_movie_t-1.jpg", "2020-0129-105040_006275_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with two same-direction lanes and a separated curbside lane behind a white railing has dry pavement and slow, moderate traffic. A white box truck directly ahead in the ego lane slows, holding the ego car's pace. A silver minivan runs alongside to the left of the truck in the adjacent lane, proceeding slowly and limiting an easy merge. To the right beyond the railing, a queue of taxis and cars creeps forward with little interaction to the ego path. An overhead blue guide sign indicates a split toward Koenji to the left and Harajuku to the right in 300 m. Buildings line both sides, with a gas station on the left.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car, in the ego lane. The driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_01430", "split": "train", "clip_key": "titan_clip_722_000534_movie", "source": {"subset": "titan", "scenario": "clip_722", "frame": "000534"}, "frames": ["titan_clip_722_000534_movie_t-3.jpg", "titan_clip_722_000534_movie_t-2.jpg", "titan_clip_722_000534_movie_t-1.jpg", "titan_clip_722_000534_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban narrow street with a single travel lane and no median runs between buildings; the pavement is worn but clear and traffic is light. A pedestrian in a black shirt crosses from the right toward the left directly ahead, moving toward the ego vehicle's path and forcing it to slow. Farther ahead near the left curb, an orange mini van stands or creeps slowly, narrowing the lane but not immediately blocking the way. Another pedestrian is visible farther up on the left side walking away and not interacting with the lane. A 30 speed limit sign is posted ahead above the roadway. Numerous parked bicycles line the left curb, reducing shoulder space.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and walking on the left side of the road, toward the ego car. The pedestrian may step into the lane unexpectedly, so the driver should stop to avoid a collision."}
{"id": "train_01431", "split": "train", "clip_key": "2020-0227-104226_009145_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "009145"}, "frames": ["2020-0227-104226_009145_movie_t-3.jpg", "2020-0227-104226_009145_movie_t-2.jpg", "2020-0227-104226_009145_movie_t-1.jpg", "2020-0227-104226_009145_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with smooth pavement and a low landscaped median separating oncoming traffic on the right; traffic is heavy and slow. Ahead in the ego lane, a silver minivan slows due to congestion ahead and sets the ego car's pace. To the left, a white van moves alongside in the adjacent lane at a similar speed, reducing lateral space. On the left near the curb, a motorcyclist filters forward between vehicles and may slip into the gap ahead of the ego car.", "hazard_reasoning": "There is a silver mini-van slowing down in front of the ego car, in the ego lane, due to traffic congestion ahead. The van's deceleration indicates congestion ahead, so the driver should slow down to maintain a safe following distance and avoid a potential collision."}
{"id": "train_01432", "split": "train", "clip_key": "titan_clip_748_000480_movie", "source": {"subset": "titan", "scenario": "clip_748", "frame": "000480"}, "frames": ["titan_clip_748_000480_movie_t-3.jpg", "titan_clip_748_000480_movie_t-2.jpg", "titan_clip_748_000480_movie_t-1.jpg", "titan_clip_748_000480_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the crane", "environment_perception": "A narrow urban street with smooth asphalt and no median carries light vehicle flow but many pedestrians, while cones and barriers line both sides and a left-side work zone narrows the roadway. On the left shoulder ahead, an orange construction crane truck is parked for the construction, and its barriers encroach on the ego lane, reducing clearance. Ahead in the lane, several pedestrians walk along the center in both directions, occupying the path and constraining the pace. Near the right edge close to the camera, a pair of pedestrians walk toward the vehicle beside the curb and may step into the lane. A blue no-parking sign is posted on the left, and additional cones mark the work area.", "hazard_reasoning": "There is an orange construction crane parked on the left side of the road, because there is construction on the left side of the road. The parked crane and nearby cones encroach on the travel lane, so the driver should manoeuvre carefully to avoid collision."}
{"id": "train_01433", "split": "train", "clip_key": "titan_clip_37_000324_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_37_000324_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_37_000324_movie_t-3_augB1.jpg", "titan_clip_37_000324_movie_t-2_augB1.jpg", "titan_clip_37_000324_movie_t-1_augB1.jpg", "titan_clip_37_000324_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrian", "environment_perception": "A dense urban shopping street with a single narrow undivided lane and brick-pattern pavement, where vehicle flow is light but slow amid many pedestrians. A small white van ahead in the ego lane moves slowly near the center, constraining the ego vehicle's pace. A pedestrian in a white shirt carrying a handbag crosses mid-block from the left to the right in the middle of the road ahead, passing before the van and potentially entering the ego lane. Several other pedestrians walk along both sides and occasionally step close to the roadway edge, keeping the available lane space tight.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and crossing the street in the middle of the road from the left side to the right side. The driver should yield to this pedestrian to avoid a collision as they are entering the vehicle's path at the intersection."}
{"id": "train_01434", "split": "train", "clip_key": "2020-0127-132751_091801_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "091801"}, "frames": ["2020-0127-132751_091801_movie_t-3.jpg", "2020-0127-132751_091801_movie_t-2.jpg", "2020-0127-132751_091801_movie_t-1.jpg", "2020-0127-132751_091801_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with a solid yellow centerline runs between shops and houses; the pavement is dry and traffic is light. A blue pickup truck directly ahead in the ego lane slows, constraining the ego car's pace. An oncoming bus approaches in the right lane at a steady speed and remains in its lane as it passes. Pedestrians on the left sidewalk near a bus stop walk and stand by the rail but stay off the roadway.", "hazard_reasoning": "There is a blue pickup truck slowing in front of the ego car, in the ego lane. The driver should slow down to maintain a safe following distance and avoid a potential collision."}
{"id": "train_01435", "split": "train", "clip_key": "titan_clip_1367_000474_movie", "source": {"subset": "titan", "scenario": "clip_1367", "frame": "000474"}, "frames": ["titan_clip_1367_000474_movie_t-3.jpg", "titan_clip_1367_000474_movie_t-2.jpg", "titan_clip_1367_000474_movie_t-1.jpg", "titan_clip_1367_000474_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "A narrow urban two-way street with a single lane each direction and no median appears, the asphalt is smooth and traffic is light. On the right edge just ahead, a white van is parked in the ego lane with its rear doors open, narrowing the carriageway and constraining the ego vehicle. Farther ahead in the same lane, a small box truck is stopped or crawling near the curb, further limiting progress. A pedestrian walks in the roadway near the rear of this truck, moving leftward and potentially entering the ego path. In the oncoming lane, a small car approaches slowly past the obstruction. No traffic signals or unusual signage are clearly visible.", "hazard_reasoning": "There is a white van parked on the right side of the road, in the ego lane. The parked van partially obstructs the driving lane, requiring the driver to manoeuvre carefully to avoid a collision."}
{"id": "train_01436", "split": "train", "clip_key": "2020-0203-114632_032539_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "032539"}, "frames": ["2020-0203-114632_032539_movie_t-3.jpg", "2020-0203-114632_032539_movie_t-2.jpg", "2020-0203-114632_032539_movie_t-1.jpg", "2020-0203-114632_032539_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban boulevard with three same-direction lanes and a hedge median on the right has smooth pavement and light traffic. A white van ahead in the ego lane drives away steadily, leading the ego vehicle. Along the left curb farther ahead, two taxis and a small red truck are stopped, leaving that lane partially blocked. Pedestrians on the left sidewalk near the crosswalk walk along the railing without stepping into the road. Beyond the median, a bus moves on the opposite carriageway, separated from the ego path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01437", "split": "train", "clip_key": "titan_clip_933_000462_movie", "source": {"subset": "titan", "scenario": "clip_933", "frame": "000462"}, "frames": ["titan_clip_933_000462_movie_t-3.jpg", "titan_clip_933_000462_movie_t-2.jpg", "titan_clip_933_000462_movie_t-1.jpg", "titan_clip_933_000462_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van", "environment_perception": "An urban commercial street in Japan, narrow two-way with no median and smooth pavement, carries light, slow-moving traffic with pedestrians on the sidewalks. A silver van is parked just ahead along the left curb within the ego lane in a marked parking space, narrowing the available lane. An oncoming car approaches mid-distance near the center of the roadway, reducing space as it passes the area of the parked van. A cyclist rides a little ahead along the right edge in the same direction at a steady pace, which may affect passing clearance.", "hazard_reasoning": "There's a silver van, parked on the left side of the road, in the ego lane, because there's a parking space on the left side of the road. The parked van blocks the ego lane, so the driver should manoeuvre around it carefully to avoid collision."}
{"id": "train_01438", "split": "train", "clip_key": "2020-0220-151845_025322_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "025322"}, "frames": ["2020-0220-151845_025322_movie_t-3.jpg", "2020-0220-151845_025322_movie_t-2.jpg", "2020-0220-151845_025322_movie_t-1.jpg", "2020-0220-151845_025322_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multilane road runs under an elevated viaduct, with three same-direction lanes, dry pavement, and heavy stop-and-go traffic. A black van is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle. In the left lane, a small covered mini-truck creeps forward alongside and slightly ahead, preventing an easy move left. To the right, a silver kei car travels slowly beside the ego car while other cars, including a red hatchback farther ahead, queue in that lane, blocking a right lane change. Concrete columns of the viaduct stand along the right side and restrict the view forward.", "hazard_reasoning": "There is a black van stopped in front of the ego car in the ego lane, because of traffic congestion. You should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_01439", "split": "train", "clip_key": "2020-0220-102630_018564_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "018564"}, "frames": ["2020-0220-102630_018564_movie_t-3.jpg", "2020-0220-102630_018564_movie_t-2.jpg", "2020-0220-102630_018564_movie_t-1.jpg", "2020-0220-102630_018564_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth pavement runs between mid-rise buildings, and traffic is heavy and mostly stopped. Directly ahead in the ego lane, a white car is stopped due to congestion ahead, holding the ego vehicle. Slightly ahead to the right, a gray hatchback in the adjacent lane inches forward alongside, limiting lateral space. Farther ahead in the queue, a tall box truck and several white vans remain stationary in the middle lanes, contributing to the jam. A 50 km/h speed-limit sign is visible on the left.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted hatchback, which poses a rear-end collision risk under congestion."}
{"id": "train_01440", "split": "train", "clip_key": "titan_clip_382_000408_movie", "source": {"subset": "titan", "scenario": "clip_382", "frame": "000408"}, "frames": ["titan_clip_382_000408_movie_t-3.jpg", "titan_clip_382_000408_movie_t-2.jpg", "titan_clip_382_000408_movie_t-1.jpg", "titan_clip_382_000408_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban shopping street features a narrow single shared lane paved with interlocking bricks, with no centerline or median and no visible vehicle traffic in either direction. The ego vehicle moves slowly as pedestrians line both sides. On the left edge ahead, a man in a white shirt and black pants carrying a handbag walks away from the ego car along the roadway near the curb. Just beyond him, two pedestrians linger by the left storefronts close to the lane, while another person farther ahead walks in the same direction near the center, occupying the path ahead. No traffic signals are visible. Menu boards, signstands, and a parked bicycle on the right sit close to the roadway, narrowing the passage.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, holding a handbag, and walking on the left side of the road, away from the ego car. The driver should manoeuvre carefully around the pedestrian to avoid collision since he is walking on the roadway."}
{"id": "train_01441", "split": "train", "clip_key": "2020-0129-144857_016317_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "016317"}, "frames": ["2020-0129-144857_016317_movie_t-3.jpg", "2020-0129-144857_016317_movie_t-2.jpg", "2020-0129-144857_016317_movie_t-1.jpg", "2020-0129-144857_016317_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban divided arterial with two lanes in the ego direction curves slightly left, bordered by sidewalks and a raised curb on the right; the pavement is smooth and traffic is slow, with a short queue that inches forward. A black van directly ahead in the ego lane is stopped because of traffic congestion ahead, temporarily blocking the path. Farther ahead in the same lane, a large white bus creeps forward with the queue, effectively setting the pace for following vehicles. In the adjacent left lane, a black SUV moves ahead at low speed alongside the queue, relevant as it may merge into the ego lane.", "hazard_reasoning": "There is a black van stopped in front of the ego car, because of traffic congestion ahead. The driver should stop immediately to avoid a rear-end collision caused by halted vehicles in the congested traffic."}
{"id": "train_01442", "split": "train", "clip_key": "2020-0210-101957_083280_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "083280"}, "frames": ["2020-0210-101957_083280_movie_t-3.jpg", "2020-0210-101957_083280_movie_t-2.jpg", "2020-0210-101957_083280_movie_t-1.jpg", "2020-0210-101957_083280_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban two-way residential road with one lane each direction and a yellow centerline curves right; the patterned pavement is in good condition and traffic is light. Ahead in the ego lane, a cement mixer truck continues forward through the bend, pulling away as traffic ahead moves and effectively setting the ego vehicle's pace. A small side street opens on the right beside closely spaced houses. A convex mirror stands on the left at the junction, and a red scooter is parked off the roadway on the right.", "hazard_reasoning": "There is a yellow truck driving in the ego lane, away from the ego car, because traffic ahead is moving. Following the vehicle ahead helps navigate past the partially obstructing truck safely and maintain a safe following distance."}
{"id": "train_01443", "split": "train", "clip_key": "2020-0205-103411_094206_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "094206"}, "frames": ["2020-0205-103411_094206_movie_t-3.jpg", "2020-0205-103411_094206_movie_t-2.jpg", "2020-0205-103411_094206_movie_t-1.jpg", "2020-0205-103411_094206_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to maintain safe distance behind the truck", "environment_perception": "An urban multi-lane road with smooth pavement runs between mid-rise buildings, with same-direction lanes and no median; traffic is heavy and mostly stopped. Directly ahead in the ego lane, a white light truck carrying a ladder is stopped because congestion queues up in front, holding the ego vehicle. In the adjacent lane to the left, a white van and several cars wait in the line, leaving little room for a lane change. In the lane to the right, a motorcycle proceeds slowly past the queue. Farther ahead, more vehicles are stacked across the lanes, and bright sun glare from the left reduces contrast.", "hazard_reasoning": "There is a white truck stopped in the ego lane because of traffic congestion ahead. Drivers should stop to maintain safe distance behind the truck."}
{"id": "train_01444", "split": "train", "clip_key": "titan_clip_1001_000378_movie", "source": {"subset": "titan", "scenario": "clip_1001", "frame": "000378"}, "frames": ["titan_clip_1001_000378_movie_t-3.jpg", "titan_clip_1001_000378_movie_t-2.jpg", "titan_clip_1001_000378_movie_t-1.jpg", "titan_clip_1001_000378_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian on left side of road", "environment_perception": "A narrow urban commercial street with shops and trees appears effectively single-lane with no median; the pavement is dry and smooth and traffic is light. A white van is stopped along the left curb just ahead, close to the travel way and narrowing the passage. Farther ahead in the same direction, a small box truck continues away at low speed and loosely sets the pace. A pedestrian in a gray shirt and black pants walks on the left side of the road away from the ego car near the curb, staying close to the edge. Short bollards line the right sidewalk, creating fixed obstacles along the roadway edge.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black pants, walking on the left side of the road, away from the ego car. The driver should be cautious because the pedestrian's position on the roadway poses a potential crossing hazard."}
{"id": "train_01445", "split": "train", "clip_key": "2020-0228-102841_101759_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "101759"}, "frames": ["2020-0228-102841_101759_movie_t-3.jpg", "2020-0228-102841_101759_movie_t-2.jpg", "2020-0228-102841_101759_movie_t-1.jpg", "2020-0228-102841_101759_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection beneath an elevated railway bridge, with a narrow raised median and clean, dry pavement; traffic is moderate and moving steadily. A silver van ahead in the ego lane continues straight under the bridge and gradually pulls away from the camera, increasing the gap. Two white vans in adjacent lanes ahead also proceed straight through the intersection, loosely matching the flow without encroaching on the ego lane. A blue delivery truck to the right ahead waits in the curb lane near the median island and remains in place. Several pedestrians stand on the left-side corner near the crosswalk, waiting and staying clear of the roadway. Overhead traffic signals and directional signs are visible above the bridge.", "hazard_reasoning": "There is a silver van driving in front of the ego car, in the ego lane, away from the ego car. The driver should follow the vehicle ahead to maintain safe distance and prepare for any sudden braking."}
{"id": "train_01446", "split": "train", "clip_key": "2020-0226-140503_085811_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-140503_085811_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-140503_085811_movie_t-3_augB1.jpg", "2020-0226-140503_085811_movie_t-2_augB1.jpg", "2020-0226-140503_085811_movie_t-1_augB1.jpg", "2020-0226-140503_085811_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban arterial with multiple lanes in each direction has smooth pavement, painted center lines, and no physical median, and traffic moves slowly toward a large signalized intersection. Oncoming traffic flows in the far-right lanes across the painted divider while same-direction lanes are packed. A white hatchback directly ahead in the ego lane slows and creeps because of congestion ahead. A boxy white van in the adjacent left lane advances at a similar pace beside the ego vehicle, limiting room to merge. Farther ahead-left, a concrete mixer truck inches forward within the queue, adding to the bottleneck. Overhead signals and broad crosswalks define the junction.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and prevent a potential rear-end collision."}
{"id": "train_01447", "split": "train", "clip_key": "2020-0227-153144_037076_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "037076"}, "frames": ["2020-0227-153144_037076_movie_t-3.jpg", "2020-0227-153144_037076_movie_t-2.jpg", "2020-0227-153144_037076_movie_t-1.jpg", "2020-0227-153144_037076_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with multiple lanes and no physical median unfolds ahead, the ego car traveling in the left lane on smooth pavement as moderate traffic bunches toward an intersection. A white van directly in front of the ego vehicle moves slowly and then waits, constrained by a red traffic light. A group of pedestrians ahead crosses from the right side through the crosswalk across the roadway, with one person already mid-road, keeping traffic stopped. Oncoming traffic, including a dark SUV, flows in the opposite lanes to the right and remains separate from the ego lane.", "hazard_reasoning": "There is a white van moving slowly forward in front of the ego car, because of a red traffic light. The driver should yield to the van to prevent a collision as it decelerates for the red signal."}
{"id": "train_01448", "split": "train", "clip_key": "2020-0129-105040_060768_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "060768"}, "frames": ["2020-0129-105040_060768_movie_t-3.jpg", "2020-0129-105040_060768_movie_t-2.jpg", "2020-0129-105040_060768_movie_t-1.jpg", "2020-0129-105040_060768_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre around the cyclist", "environment_perception": "An urban two-way shopping street with a single narrow lane each way and red edge strips runs straight on smooth pavement, with light traffic and a zebra crossing ahead. Ahead on the right, a cyclist travels toward the ego vehicle, swinging toward the center to bypass a parked van, so the rider may momentarily encroach into the ego lane. Just beyond, a silver van stands at the right curb with workers on ladders beside the storefront, narrowing the carriageway and creating a local obstruction. On the left side, several pedestrians walk along the red shoulder near the crosswalk, close to the roadway but staying to the side.", "hazard_reasoning": "There's a cyclist cycling toward the ego-car on the right side of the road because of the parked vehicle. The cyclist may swerve into the lane unexpectedly due to the parked van, so the driver should manoeuvre around them."}
{"id": "train_01449", "split": "train", "clip_key": "2020-0129-105040_018512_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "018512"}, "frames": ["2020-0129-105040_018512_movie_t-3.jpg", "2020-0129-105040_018512_movie_t-2.jpg", "2020-0129-105040_018512_movie_t-1.jpg", "2020-0129-105040_018512_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with three same-direction lanes and a concrete median runs between tall buildings; the pavement is smooth and traffic is heavy and stop-and-go, with a red-painted left lane. A white hatchback directly ahead in the ego lane is stopped because of congestion further ahead, holding the ego vehicle. To the right, a motorcyclist filters forward between lanes, passing close to the ego lane and moving ahead of the queue. In the adjacent right lane, a box truck creeps with brake lights on alongside the ego car, limiting space for a lane change.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car due to traffic congestion ahead. The ego driver should stop to avoid rear-ending the halted vehicle in the congested flow."}
{"id": "train_01450", "split": "train", "clip_key": "2020-0221-115122_023691_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "023691"}, "frames": ["2020-0221-115122_023691_movie_t-3.jpg", "2020-0221-115122_023691_movie_t-2.jpg", "2020-0221-115122_023691_movie_t-1.jpg", "2020-0221-115122_023691_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial beneath an elevated expressway has two same-direction lanes with no median, smooth asphalt, and traffic that becomes heavy with a slow queue forming ahead. A white car directly ahead in the left ego lane slows because congestion develops further up the road, limiting the ego vehicle's pace. A white van in the adjacent right lane travels straight at a similar slow speed slightly ahead of the ego vehicle. Along the left curb, a cyclist rides in the same direction near the shrubs, keeping close to the edge while passing the queued traffic. Farther ahead several vehicles stack under the structure, and no unusual signals or work zones are apparent.", "hazard_reasoning": "There is a white sedan slowing in the ego lane because of the traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01451", "split": "train", "clip_key": "2020-0225-102455_023899_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "023899"}, "frames": ["2020-0225-102455_023899_movie_t-3.jpg", "2020-0225-102455_023899_movie_t-2.jpg", "2020-0225-102455_023899_movie_t-1.jpg", "2020-0225-102455_023899_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "A dense urban commercial street with multiple lanes in each direction approaches a signalized intersection, the pavement smooth and traffic heavy and slow. A gray sedan directly ahead in the ego lane remains stopped at a green light because congestion blocks the intersection, holding the ego vehicle. Along the left curb a FedEx delivery truck is parked with cones and a worker at its rear, narrowing the curb lane. In the adjacent same-direction lane to the left, a black taxi and other cars inch forward beside us, limiting merging options. On the right, oncoming vehicles queue near the crosswalk.", "hazard_reasoning": "There is a gray sedan stopped at a green light at an intersection, in the ego-car lane, because of traffic congestion ahead. You should yield to the stopped sedan to maintain safe following distance and avoid a rear-end collision."}
{"id": "train_01452", "split": "train", "clip_key": "2020-0220-102630_028848_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "028848"}, "frames": ["2020-0220-102630_028848_movie_t-3.jpg", "2020-0220-102630_028848_movie_t-2.jpg", "2020-0220-102630_028848_movie_t-1.jpg", "2020-0220-102630_028848_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes and no median shows dry pavement and heavy, slow-moving traffic. A black motorcycle ahead in the ego lane is stopped because of congestion and holds the lane. Another scooter slightly farther ahead to the left filters forward along the curbside cones at a work area and may edge back into the ego lane. In the adjacent right lane, a white sedan slows behind a stationary box truck farther ahead, contributing to the queue. Road work with cones and workers at the left curb narrows the usable space, while pedestrians keep to the sidewalk.", "hazard_reasoning": "There is a black motorcycle stopped in the ego lane because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary motorcycle and maintain a safe following distance."}
{"id": "train_01453", "split": "train", "clip_key": "2020-0210-101957_014736_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "014736"}, "frames": ["2020-0210-101957_014736_movie_t-3.jpg", "2020-0210-101957_014736_movie_t-2.jpg", "2020-0210-101957_014736_movie_t-1.jpg", "2020-0210-101957_014736_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked truck on left.", "environment_perception": "An urban arterial with two lanes in our direction runs on dry, well-kept pavement, divided from oncoming lanes to the right by a planted median; traffic appears moderate and steady. Ahead in the ego lane, a small white kei truck moves slowly near the curb and edges right, constraining our pace as it negotiates space. A silver car in the adjacent right lane overtakes and continues straight, briefly occupying the gap needed for a lane change. There is a gray truck parked on the left side of the road just ahead, partly on the shoulder, reducing clearance. An overhead blue directional sign indicates route choices 180 m ahead.", "hazard_reasoning": "There is a gray truck parked on the left side of the road. The parked truck may obstruct the left lane or pull out unexpectedly, so the driver should remain alert for potential hazards."}
{"id": "train_01454", "split": "train", "clip_key": "2020-0210-101957_045850_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "045850"}, "frames": ["2020-0210-101957_045850_movie_t-3.jpg", "2020-0210-101957_045850_movie_t-2.jpg", "2020-0210-101957_045850_movie_t-1.jpg", "2020-0210-101957_045850_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Start moving", "environment_perception": "An urban multi-lane arterial with two lanes each way and a painted median appears dry and in good condition, and heavy traffic begins to ease into a slow roll. Directly ahead in the ego lane, a black hatchback starts to move as congestion loosens and sets the pace for the ego vehicle. Ahead-left in the adjacent same-direction lane, a small white box truck creeps forward in parallel, remaining beside the ego car. Farther ahead, a short queue of cars proceeds gradually toward the next signalized junction. In the opposite direction on the right, oncoming traffic including a white truck moves steadily through the corridor.", "hazard_reasoning": "There is a black hatchback starting to drive in front of the ego car in the ego lane, because traffic is easing. Start moving to maintain safe distance as it merges ahead."}
{"id": "train_01455", "split": "train", "clip_key": "2020-0203-154554_053509_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "053509"}, "frames": ["2020-0203-154554_053509_movie_t-3.jpg", "2020-0203-154554_053509_movie_t-2.jpg", "2020-0203-154554_053509_movie_t-1.jpg", "2020-0203-154554_053509_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three lanes in the ego direction and oncoming lanes to the right beyond a metal guardrail; the pavement is dry and smooth, and traffic is light. A white sedan far ahead in the ego lane continues at a steady speed and loosely governs the pace. On the left near the curb, a box truck and a van are stopped in the curbside space, reducing shoulder clearance but remaining out of the travel lane. In adjacent same-direction lanes ahead, a few cars proceed under the viaduct at similar speed without lane changes. To the right beyond the divider, oncoming cars move the other way, well separated from the ego path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01456", "split": "train", "clip_key": "titan_clip_376_000168_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_376_000168_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_376_000168_movie_t-3_augB1.jpg", "titan_clip_376_000168_movie_t-2_augB1.jpg", "titan_clip_376_000168_movie_t-1_augB1.jpg", "titan_clip_376_000168_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "A narrow urban street with brick-pattern pavement and no marked centerline runs between shops and signage, with light traffic and no median. The ego vehicle follows a single lane along the left side typical of Japan. A dark sedan ahead in the same lane moves slowly toward a small junction, constraining the ego's pace. On the right, a pedestrian with a backpack crosses from right to left where no crosswalk is present, potentially entering the ego lane. At the near left curb, another pedestrian steps off the sidewalk and walks diagonally into the roadway close to the ego path. A blue straight-ahead-only sign and a no-parking sign are posted on the left, and several bicycles are parked along the right sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a brown shirt, carrying a backpack, crossing the street from the right side of the road to the left side, because there is no crosswalk. The driver should stop immediately to avoid a collision with the crossing pedestrian."}
{"id": "train_01457", "split": "train", "clip_key": "titan_clip_390_000390_movie", "source": {"subset": "titan", "scenario": "clip_390", "frame": "000390"}, "frames": ["titan_clip_390_000390_movie_t-3.jpg", "titan_clip_390_000390_movie_t-2.jpg", "titan_clip_390_000390_movie_t-1.jpg", "titan_clip_390_000390_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist on your left.", "environment_perception": "A narrow urban shopping street with an unmarked single carriageway and no median is paved with interlocking bricks; traffic is very light and unchanged. Ahead on the left edge, a cyclist wearing a black shirt rides away from the ego vehicle close to the curb, potentially setting the pace by occupying the lane. Farther ahead near the center, several pedestrians walk along and intermittently cross, so they may enter the ego path. On the right, a pedestrian on the sidewalk walks toward the camera while staying clear of the roadway. Construction hoarding and barriers line the right side without intruding into the lane.", "hazard_reasoning": "There is a cyclist wearing a black shirt, cycling on the left side of the road, away from the ego car. The cyclist could move unpredictably into the lane, so the driver should monitor their position and adjust speed or path accordingly."}
{"id": "train_01458", "split": "train", "clip_key": "2020-0213-143552_006427_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "006427"}, "frames": ["2020-0213-143552_006427_movie_t-3.jpg", "2020-0213-143552_006427_movie_t-2.jpg", "2020-0213-143552_006427_movie_t-1.jpg", "2020-0213-143552_006427_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban arterial with two lanes each way and a curbside green bike lane has dry, smooth pavement and light traffic that stays steady. A brown box truck is stopped ahead on the left edge in the ego lane, its tail open as it is being unloaded, blocking part of the ego lane and constraining the ego vehicle's path. A small white truck travels far ahead in the same direction in the inner lane and does not affect the ego path. An oncoming white minivan moves along the right-side lanes in the opposite direction, separated only by lane markings. A pedestrian walks on the left sidewalk near shop displays and remains off the roadway.", "hazard_reasoning": "There is a brown truck parked in the ego lane on the left side of the road, because it is being unloaded. The parked truck blocks the ego lane, so the driver should manoeuvre carefully around it to maintain safe lane position and avoid a collision."}
{"id": "train_01459", "split": "train", "clip_key": "titan_clip_591_000390_movie", "source": {"subset": "titan", "scenario": "clip_591", "frame": "000390"}, "frames": ["titan_clip_591_000390_movie_t-3.jpg", "titan_clip_591_000390_movie_t-2.jpg", "titan_clip_591_000390_movie_t-1.jpg", "titan_clip_591_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian ahead", "environment_perception": "An urban two-way road with two lanes and no median lies ahead, the pavement smooth and traffic light with no same-direction or oncoming cars moving as the view approaches a small intersection beside a scaffolding-wrapped building. Ahead, a bicyclist crosses right to left through the ego lane, briefly blocking the path. On the left edge, a pedestrian wearing a white shirt walks away from the ego car along the curb, close to the lane but staying outside it. A 30 speed limit sign stands on a pole to the right. A small green cart sits in the middle of the roadway, and a van is parked on the right by vending machines.", "hazard_reasoning": "A pedestrian wearing a white shirt and walking on the left side of the road, away from the ego car. The pedestrian may step onto the road unexpectedly and enter the vehicle's path, so the driver should be aware."}
{"id": "train_01460", "split": "train", "clip_key": "titan_clip_901_000252_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_901_000252_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_901_000252_movie_t-3_augB1.jpg", "titan_clip_901_000252_movie_t-2_augB1.jpg", "titan_clip_901_000252_movie_t-1_augB1.jpg", "titan_clip_901_000252_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban commercial street with paving-stone surface has one lane in each direction and no median, and traffic moves slowly with same-direction vehicles queued ahead. Directly ahead, a male pedestrian in black crosses from the left to the right in front of the ego-vehicle where there is no marked crosswalk, briefly occupying the lane. Farther ahead in the same direction, a blue cargo truck is stopped or creeping, constraining the ego car's pace. On the right edge, several pedestrians linger near the curb and edge forward, suggesting they may step into the lane. A large delivery truck is parked along the left side beside the ego car, narrowing the roadway.", "hazard_reasoning": "There is a male pedestrian, wearing black pants and a black shirt, crossing the road from the left side, to the right side of the street, in front of the ego-car, because there is no pedestrian crossing. The pedestrian's unpredictable movement across the driving lane requires the driver to carefully manoeuvre around him to avoid collision."}
{"id": "train_01461", "split": "train", "clip_key": "2020-0226-101332_007807_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "007807"}, "frames": ["2020-0226-101332_007807_movie_t-3.jpg", "2020-0226-101332_007807_movie_t-2.jpg", "2020-0226-101332_007807_movie_t-1.jpg", "2020-0226-101332_007807_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the slowing van", "environment_perception": "An urban two-way street with one lane each way runs between mid-rise buildings; the pavement looks smooth, and traffic is light in the ego direction but heavy opposite. Ahead in the ego lane near the left curb, a blue van slows, constraining the ego vehicle's pace as we follow. To the right, a line of oncoming vehicles, including a white van and a silver car, creeps past within their lane while keeping clear of the center lines. The number 40 is painted on the roadway, indicating the posted speed. A construction hoarding and railings along the left sidewalk narrow the verge but do not intrude into the travel lane.", "hazard_reasoning": "There is a blue van slowing on the left side of the road, in the left lane. The van's deceleration could require the driver to reduce speed to maintain a safe following distance and avoid a potential rear-end collision, so the driver should be cautious."}
{"id": "train_01462", "split": "train", "clip_key": "titan_clip_1229_000054_movie", "source": {"subset": "titan", "scenario": "clip_1229", "frame": "000054"}, "frames": ["titan_clip_1229_000054_movie_t-3.jpg", "titan_clip_1229_000054_movie_t-2.jpg", "titan_clip_1229_000054_movie_t-1.jpg", "titan_clip_1229_000054_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Manoeuvre around the pedestrians", "environment_perception": "An urban two-way street with one narrow lane per direction curves gently uphill to the right, with no median; the asphalt looks worn but intact, and traffic is light with no oncoming vehicles. A white hatchback ahead in the left lane proceeds slowly past construction barriers along the left side, constraining the ego vehicle's pace. On the right side of the road, two pedestrians in white shirts and black pants, one carrying a handbag, walk away from the ego car along the edge and may drift toward the lane. Guardrails border the right sidewalk, and a work zone with orange barricades narrows the left shoulder, adding a roadside obstruction.", "hazard_reasoning": "There are two pedestrians wearing white shirts and black pants, carrying a handbag, and walking on the right side of the road away from the ego car. They could step into the lane unexpectedly, so you should manoeuvre around them to maintain safety."}
{"id": "train_01463", "split": "train", "clip_key": "2020-0205-152530_010854_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "010854"}, "frames": ["2020-0205-152530_010854_movie_t-3.jpg", "2020-0205-152530_010854_movie_t-2.jpg", "2020-0205-152530_010854_movie_t-1.jpg", "2020-0205-152530_010854_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial carries light to moderate same-direction traffic on dry pavement with noticeable sun glare; a rightmost lane is separated by short posts. The ego vehicle proceeds in the center through lane. Directly ahead, a black sedan in the ego lane moves left into the adjacent lane, clearing the ego vehicle's path as it completes the lane change. To the left, a white compact car runs slightly behind in the adjacent lane and holds pace, reducing space for an immediate move left. In the separated right lane, a white van continues straight ahead behind the posts and does not interact with the ego lane.", "hazard_reasoning": "There is a black sedan changing lanes from in front of the ego car to the left lane. Slow down to maintain a safe distance and avoid collision with the merging vehicle."}
{"id": "train_01464", "split": "train", "clip_key": "titan_clip_597_000120_movie", "source": {"subset": "titan", "scenario": "clip_597", "frame": "000120"}, "frames": ["titan_clip_597_000120_movie_t-3.jpg", "titan_clip_597_000120_movie_t-2.jpg", "titan_clip_597_000120_movie_t-1.jpg", "titan_clip_597_000120_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking at road's edge", "environment_perception": "A narrow urban shopping street with a single undivided lane and smooth pavement is shown, and traffic flow is light at low speed. Ahead on the left edge, a pedestrian wearing a black shirt walks away from the ego car along the roadway, close to the curb and near the travel path. Farther ahead in the same lane, a small white vehicle proceeds away, loosely setting the pace. On the right, a couple of pedestrians stand by storefronts and parked bicycles, remaining at the curb but facing the road. A fallen signboard and ramp jut from the left sidewalk into the carriageway, narrowing the clearance.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, walking on the left side of the road, away from the ego car. The pedestrian is close to the roadway and may step into the vehicle's path, so the driver should be alert."}
{"id": "train_01465", "split": "train", "clip_key": "2020-0214-102601_001950_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0214-102601_001950_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0214-102601_001950_movie_t-3_augB1.jpg", "2020-0214-102601_001950_movie_t-2_augB1.jpg", "2020-0214-102601_001950_movie_t-1_augB1.jpg", "2020-0214-102601_001950_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down for cyclist in your lane", "environment_perception": "An urban neighborhood street with a single narrow lane each way is divided by a yellow centerline; the pavement looks smooth with a red textured section, and traffic remains light. Ahead in the ego lane, a cyclist rides near the middle of the road because there is no bike lane, continuing forward and occupying the ego path, which constrains our pace. On the left sidewalk a pedestrian walks toward the upcoming crosswalk but stays on the walkway. Another pedestrian stands near the right corner by the zebra crossing, appearing to wait. A signalized crosswalk spans the junction ahead, and no oncoming vehicles are visible.", "hazard_reasoning": "There is a cyclist cycling in the middle of the road, in the ego lane, because there is no bike lane. The driver should slow down for the cyclist in your lane to avoid collision."}
{"id": "train_01466", "split": "train", "clip_key": "2020-0212-102546_074192_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "074192"}, "frames": ["2020-0212-102546_074192_movie_t-3.jpg", "2020-0212-102546_074192_movie_t-2.jpg", "2020-0212-102546_074192_movie_t-1.jpg", "2020-0212-102546_074192_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane divided arterial with smooth pavement carries light, free-flowing traffic. The ego vehicle follows the left-side carriageway with a landscaped median to the right separating oncoming lanes. A yellow work truck directly ahead in the ego lane accelerates away as the road ahead is clear, gradually increasing the gap. A white passenger car travels slightly ahead in the lane to the left of the truck, continuing straight and not affecting the ego vehicle's path. No opposing vehicles are apparent across the median, and no obstacles or work zones are visible.", "hazard_reasoning": "There is a yellow truck driving away from the ego car, because the road ahead is clear, in front of the ego car. The truck may suddenly brake, so the driver should maintain a safe following distance under this situation."}
{"id": "train_01467", "split": "train", "clip_key": "2020-0227-104226_055570_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "055570"}, "frames": ["2020-0227-104226_055570_movie_t-3.jpg", "2020-0227-104226_055570_movie_t-2.jpg", "2020-0227-104226_055570_movie_t-1.jpg", "2020-0227-104226_055570_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban residential street with one lane in each direction and no median is shown, the ego driving in the left lane on smooth pavement with light traffic. A silver hatchback directly ahead in the ego lane is stopped because another vehicle is turning into the ego lane, holding the ego vehicle's pace. From the left, a light blue car noses out of a driveway and slowly turns to merge into the ego lane ahead of the hatchback. A white truck is parked along the right curb on the oncoming side, but it remains stationary and does not obstruct the lane.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, because of another vehicle turning into the ego lane. The driver should stop immediately to prevent a rear-end collision with the halted hatchback."}
{"id": "train_01468", "split": "train", "clip_key": "2020-0210-101957_014872_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "014872"}, "frames": ["2020-0210-101957_014872_movie_t-3.jpg", "2020-0210-101957_014872_movie_t-2.jpg", "2020-0210-101957_014872_movie_t-1.jpg", "2020-0210-101957_014872_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of motorcycle ahead", "environment_perception": "An urban multi-lane boulevard with a landscaped median and smooth pavement approaches a signalized intersection, and traffic is light to moderate moving steadily. A black motorcycle travels ahead of the ego car in the right lane, continuing straight through the junction and gradually pulling away, matching the note about a black motorcycle in front. A small white flatbed truck is farther ahead slightly left of the ego, proceeding straight toward the intersection and pacing vehicles in its lane. Several cars on the opposite carriageway beyond the median move the other way without interacting with the ego path. Overhead traffic lights span the crosswalk at the junction, with broad zebra markings visible, and no pedestrians or hazards appear.", "hazard_reasoning": "There is a black motorcycle driving in the right lane in front of the ego car. The motorcycle may change speed or direction unpredictably, so the driver should be aware and maintain a safe following distance."}
{"id": "train_01469", "split": "train", "clip_key": "2020-0207-101955_081208_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "081208"}, "frames": ["2020-0207-101955_081208_movie_t-3.jpg", "2020-0207-101955_081208_movie_t-2.jpg", "2020-0207-101955_081208_movie_t-1.jpg", "2020-0207-101955_081208_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with a single lane in our direction runs beside a high concrete wall, with opposing lanes to the right behind a low post-and-rail median; the pavement is dry and traffic is light. A blue truck ahead in the ego lane drives away from us at a steady pace, maintaining a gap and setting our speed. In the nearest oncoming lane to the right, a white box truck approaches on the opposite carriageway, separated by the median and not entering our path. No notable signals or signs are prominent, and no obstacles or work zones are visible.", "hazard_reasoning": "There is a blue truck driving in the ego lane away from the ego car. The large truck blocks the driver's forward view, so the driver should be cautious in case of unexpected events ahead."}
{"id": "train_01470", "split": "train", "clip_key": "2020-0206-101736_027394_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "027394"}, "frames": ["2020-0206-101736_027394_movie_t-3.jpg", "2020-0206-101736_027394_movie_t-2.jpg", "2020-0206-101736_027394_movie_t-1.jpg", "2020-0206-101736_027394_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two same-direction lanes has smooth pavement and heavy, slow-moving traffic queuing toward a signalized intersection ahead. A white sedan directly ahead in the ego lane is stopped or creeping, constraining the ego car's pace. A white SUV just ahead on the left is stopped and angled right from the left lane toward the ego lane, likely to merge because of congestion ahead, and may enter the ego path. Oncoming cars in the opposite lanes to the right move past steadily with no interaction. Traffic signals and an overhead sign gantry are visible above the intersection ahead.", "hazard_reasoning": "There is a white SUV stopped in front of the ego car on the left side and facing from the left lane to the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe following distance and avoid a collision with the halted vehicle."}
{"id": "train_01471", "split": "train", "clip_key": "titan_clip_557_000138_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_557_000138_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_557_000138_movie_t-3_augB1.jpg", "titan_clip_557_000138_movie_t-2_augB1.jpg", "titan_clip_557_000138_movie_t-1_augB1.jpg", "titan_clip_557_000138_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with shops lines a single undivided lane on smooth pavement, and motor traffic is absent. In the middle distance a pedestrian wearing a white shirt and black pants crosses the lane from right to left in the middle of the road, directly in the vehicle's path. Two pedestrians at the left edge in the near foreground walk along the roadway toward the camera and briefly encroach on the lane. Farther ahead another pedestrian walks away near the center of the lane, influencing the vehicle's pace. A parked bicycle with a front basket stands at the right curb near a storefront.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, crossing the street in the middle of the road, from the right side to the left side. Slow down because the pedestrian may step into your path unexpectedly."}
{"id": "train_01472", "split": "train", "clip_key": "2020-0225-102455_082132_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "082132"}, "frames": ["2020-0225-102455_082132_movie_t-3.jpg", "2020-0225-102455_082132_movie_t-2.jpg", "2020-0225-102455_082132_movie_t-1.jpg", "2020-0225-102455_082132_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three lanes in the ego direction runs between rail tracks and mid-rise buildings, the pavement smooth and traffic heavy as vehicles queue at an intersection. A black SUV is directly ahead in the ego lane and stands still for a red traffic light, holding the ego vehicle's pace. In the middle lane a large dump truck slightly ahead waits at the same light and occupies the space beside the ego lane. In the right lane a white van also waits parallel to the ego car behind the truck. Overhead signals ahead display red for the approach.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The black SUV is stopped by the red light, so the driver must stop to avoid a collision."}
{"id": "train_01473", "split": "train", "clip_key": "2020-0228-102841_011509_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "011509"}, "frames": ["2020-0228-102841_011509_movie_t-3.jpg", "2020-0228-102841_011509_movie_t-2.jpg", "2020-0228-102841_011509_movie_t-1.jpg", "2020-0228-102841_011509_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction and a painted separator runs between mid-rise buildings; the asphalt is dry and smooth. Traffic in the ego direction is heavy and mostly stopped, with no oncoming vehicles nearby. A sedan directly ahead in the ego lane is stopped because of congestion and holds the ego vehicle. To the left, a delivery box truck is pulled over with its rear open and stacks of crates visible, standing partly in the lane and narrowing the usable space. Farther ahead in the same direction, a white van and a small truck queue and creep forward. Pedestrians on the right sidewalk pass storefronts and a parking entrance while remaining off the roadway.", "hazard_reasoning": "There is a blue sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a collision due to the unexpected halt of the vehicle ahead."}
{"id": "train_01474", "split": "train", "clip_key": "titan_clip_95_000336_movie", "source": {"subset": "titan", "scenario": "clip_95", "frame": "000336"}, "frames": ["titan_clip_95_000336_movie_t-3.jpg", "titan_clip_95_000336_movie_t-2.jpg", "titan_clip_95_000336_movie_t-1.jpg", "titan_clip_95_000336_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "A narrow urban two-way street with no median and smooth pavement shows light traffic, and the lane is tightened by curbside activity. A pedestrian close to the camera steps from the left sidewalk into the roadway, crossing ahead of the ego path. Farther ahead at the right curb, a red truck is parked and being unloaded, with a person handling crates at the edge of the lane and reducing the available width. In the same direction ahead, a cyclist rides away along the center of the lane and sets the pace past the unloading area. Shops, bicycles, and signs line both sides.", "hazard_reasoning": "There is a red truck parked on the left side of the road, in front of the ego-car, because it is being unloaded. The parked truck reduces visibility and may block the path, requiring the driver to manoeuvre carefully around it to avoid collision and ensure pedestrian safety."}
{"id": "train_01475", "split": "train", "clip_key": "2020-0206-101736_087740_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "087740"}, "frames": ["2020-0206-101736_087740_movie_t-3.jpg", "2020-0206-101736_087740_movie_t-2.jpg", "2020-0206-101736_087740_movie_t-1.jpg", "2020-0206-101736_087740_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with two lanes per direction and a painted median runs through a signalized intersection; the pavement looks smooth and traffic is moderate, with oncoming flow in the right-side lanes. The signals ahead show green and vehicles proceed. Ahead in the ego lane, a white mini-truck accelerates away through the intersection under the green. Slightly farther ahead, a flatbed truck in the same direction continues straight and modestly constrains the lane's pace. In the adjacent right same-direction lane, a silver car travels parallel at a similar speed as it goes straight.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because of a green traffic light. As the light has turned green, the truck is moving away through the intersection, so you should follow the vehicle ahead to maintain proper spacing and clear the intersection safely."}
{"id": "train_01476", "split": "train", "clip_key": "2020-0129-105040_020382_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "020382"}, "frames": ["2020-0129-105040_020382_movie_t-3.jpg", "2020-0129-105040_020382_movie_t-2.jpg", "2020-0129-105040_020382_movie_t-1.jpg", "2020-0129-105040_020382_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to the merging vehicle", "environment_perception": "An urban multi-lane arterial runs through a commercial district, with smooth pavement, a curbside red lane by the left sidewalk, and a concrete median on the right; traffic is moderate and moving steadily. Ahead of the ego-car, a white hatchback moves right from the left lane into the next lane in front of us, completing the lane change and briefly affecting spacing. To the right, a large white coach bus travels parallel near the median at a steady pace, limiting room for vehicles moving into that lane. Farther ahead, a box truck continues in the middle lanes and sets the flow for vehicles behind.", "hazard_reasoning": "There is a white hatchback lane changing, in front of the ego-car, from the left to the right lane. The driver should yield to the merging vehicle to maintain safe distance and avoid collision."}
{"id": "train_01477", "split": "train", "clip_key": "2020-0207-151349_058269_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "058269"}, "frames": ["2020-0207-151349_058269_movie_t-3.jpg", "2020-0207-151349_058269_movie_t-2.jpg", "2020-0207-151349_058269_movie_t-1.jpg", "2020-0207-151349_058269_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way road with no physical median runs between mid-rise buildings; the pavement looks smooth and traffic is heavy and largely stopped. Directly ahead, a silver sedan in the ego lane is stopped because of congestion and constrains the ego car's pace. Farther ahead in the same lane, a yellow box truck with ladders queues at a standstill, contributing to the backup. To the right, oncoming traffic including a white minivan and a dark truck crawls within its lane, remaining separated by the center line. Other vehicles line the adjacent lanes with no visible hazards or work zones.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, because of traffic congestion ahead. You should stop to avoid a rear-end collision with the halted vehicle."}
{"id": "train_01478", "split": "train", "clip_key": "2020-0206-101736_032137_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "032137"}, "frames": ["2020-0206-101736_032137_movie_t-3.jpg", "2020-0206-101736_032137_movie_t-2.jpg", "2020-0206-101736_032137_movie_t-1.jpg", "2020-0206-101736_032137_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in each direction and a planted median is shown; the pavement is smooth and traffic is moderate with a brief slowdown near a crosswalk. A white sedan directly ahead in the ego lane slows because a vehicle in front of it encroaches into the ego lane to pass a parked vehicle, constraining our pace. The encroaching white SUV slightly ahead straddles the lane line, then begins to straighten back into its lane. A van stands at the curb near the crosswalk, occupying part of a lane as a static obstacle. Oncoming traffic moves freely on the far side of the median.", "hazard_reasoning": "There is a white sedan slowing down in the ego lane because the vehicle in front of it is partially occupying the ego lane to avoid another parked vehicle. The driver should slow down to maintain a safe following distance and prepare for potential sudden deceleration by the vehicle ahead."}
{"id": "train_01479", "split": "train", "clip_key": "2020-0217-110854_000489_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "000489"}, "frames": ["2020-0217-110854_000489_movie_t-3.jpg", "2020-0217-110854_000489_movie_t-2.jpg", "2020-0217-110854_000489_movie_t-1.jpg", "2020-0217-110854_000489_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban shopping street with smooth asphalt and no centerline carries light two-way traffic. A silver kei van ahead in the same direction travels slowly near the curb, setting the pace for the ego vehicle. A white sedan approaches from ahead in the oncoming lane and continues straight past. Two pedestrians on the left sidewalk by the blue building walk along the curb and reach the edge, where they could step into the roadway. Parked bicycles and street furniture line the right curb, slightly narrowing the usable road space, and no prominent signals or speed signs are visible.", "hazard_reasoning": "No hazards are detected because the road is clear, visibility is good, and there are no conflicting road users or obstacles requiring driver action."}
{"id": "train_01480", "split": "train", "clip_key": "2020-0226-101332_001957_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "001957"}, "frames": ["2020-0226-101332_001957_movie_t-3.jpg", "2020-0226-101332_001957_movie_t-2.jpg", "2020-0226-101332_001957_movie_t-1.jpg", "2020-0226-101332_001957_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of van changing lanes", "environment_perception": "An urban multi-lane intersection on a two-way road has smooth pavement and moderate traffic. In front of the ego vehicle, a white van changes from the ego lane into the lane to the left, opening space ahead as it merges. Ahead to the right, a small white truck proceeds straight in the adjacent right lane without entering the ego path. On the far left, several pedestrians walk across the zebra crossing toward the near corner, remaining outside the travel lane. A pedestrian signal on the left shows walk, and overhead vehicle signals are visible at the junction.", "hazard_reasoning": "There is a white van in front of the ego car, changing to the left lane from the ego lane. The driver should be aware because the van's unexpected lane change could reduce space and require evasive action."}
{"id": "train_01481", "split": "train", "clip_key": "2020-0131-135401_087405_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "087405"}, "frames": ["2020-0131-135401_087405_movie_t-3.jpg", "2020-0131-135401_087405_movie_t-2.jpg", "2020-0131-135401_087405_movie_t-1.jpg", "2020-0131-135401_087405_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with two same-direction lanes and a metal-railed median has smooth pavement and slow, queuing traffic at a signalized intersection. A white van directly ahead in the ego lane starts to move from a stop and leads the line, setting the ego vehicle's pace. To the left, a small flatbed truck in the adjacent lane edges forward parallel to the ego path as both approach the junction. In the opposite lanes beyond the median, a black kei van comes through the intersection toward the camera, and a larger truck farther ahead continues steadily with oncoming flow. Overhead traffic lights and midrise buildings frame the scene.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01482", "split": "train", "clip_key": "2020-0203-154554_073701_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "073701"}, "frames": ["2020-0203-154554_073701_movie_t-3.jpg", "2020-0203-154554_073701_movie_t-2.jpg", "2020-0203-154554_073701_movie_t-1.jpg", "2020-0203-154554_073701_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction and no median leads into a signalized intersection; the pavement is dry and traffic is moderate, moving slowly in a short queue. A black motorcycle advances along the left side near the ego front and enters the left lane, filtering toward the space between a red hatchback ahead and a light van, which may place it in the ego path. The red hatchback directly ahead in the ego lane creeps toward the junction and sets the pace for the ego vehicle. Oncoming white vans travel through the intersection on the right side of the road without affecting the ego lane. Low sun glare faces the camera.", "hazard_reasoning": "There is a black motorcycle driving in the left lane, toward the space between two vehicles. The motorcycle is merging into your lane ahead, so you should slow down to maintain a safe following distance under this situation."}
{"id": "train_01483", "split": "train", "clip_key": "titan_clip_235_000654_movie", "source": {"subset": "titan", "scenario": "clip_235", "frame": "000654"}, "frames": ["titan_clip_235_000654_movie_t-3.jpg", "titan_clip_235_000654_movie_t-2.jpg", "titan_clip_235_000654_movie_t-1.jpg", "titan_clip_235_000654_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "A narrow urban street with brick paving and no center markings runs between tall buildings, and traffic appears light. A white truck is parked immediately ahead on the left in the ego lane as it is being unloaded, with its liftgate and a hand cart jutting into the roadway and partially blocking the lane, constraining progress. On the right sidewalk, a man walks away along a storefront while another person stands near the entrance close to the curb, neither entering the road. Bicycles are parked by the wall, and posts and a cone line the curb, further narrowing the passage.", "hazard_reasoning": "There is a white truck parked on the left side of the road, in the ego lane, because it being unloaded. The driver should carefully manoeuvre around the parked truck to avoid collision with the obstructing vehicle and any unloading activity."}
{"id": "train_01484", "split": "train", "clip_key": "titan_clip_1085_000252_movie", "source": {"subset": "titan", "scenario": "clip_1085", "frame": "000252"}, "frames": ["titan_clip_1085_000252_movie_t-3.jpg", "titan_clip_1085_000252_movie_t-2.jpg", "titan_clip_1085_000252_movie_t-1.jpg", "titan_clip_1085_000252_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban backstreet with a single narrow two-way lane lacks sidewalks or a median, and the worn asphalt runs between closely spaced buildings; overall traffic is light with no vehicles ahead or oncoming. On the left edge just ahead, a female pedestrian in a black dress carrying a handbag walks away from the ego vehicle along the roadway because there is no sidewalk, occupying part of the ego lane. Farther ahead near the center, another pedestrian with a white umbrella pulling a suitcase also walks away in the travel lane, remaining in the vehicle's path.", "hazard_reasoning": "There is a female pedestrian wearing a black dress, and carrying a handbag, walking away from the ego car, because there is no sidewalk. The driver should carefully manoeuvre to maintain a safe distance and avoid collision with the pedestrian."}
{"id": "train_01485", "split": "train", "clip_key": "2020-0218-103119_022375_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "022375"}, "frames": ["2020-0218-103119_022375_movie_t-3.jpg", "2020-0218-103119_022375_movie_t-2.jpg", "2020-0218-103119_022375_movie_t-1.jpg", "2020-0218-103119_022375_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street lined with mid-rise buildings has smooth pavement and light flow, with two same-direction lanes and no physical median. A white van travels ahead in the ego lane moving away from the camera and lightly sets the pace. An oncoming dark SUV approaches in the right-side lanes and passes by without entering the ego path. A silver sedan is stopped near the left curb just ahead, remaining outside the travel lane. A pedestrian overpass spans the roadway ahead, and a speed-limit sign is visible on the right.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. You should be aware of its movement ahead and maintain sufficient distance in case it slows or changes speed unexpectedly."}
{"id": "train_01486", "split": "train", "clip_key": "2020-0205-103411_002154_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "002154"}, "frames": ["2020-0205-103411_002154_movie_t-3.jpg", "2020-0205-103411_002154_movie_t-2.jpg", "2020-0205-103411_002154_movie_t-1.jpg", "2020-0205-103411_002154_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian at crosswalk ahead", "environment_perception": "An urban side street meets a junction with a zebra crosswalk in the foreground; the narrow, undivided pavement appears worn and motor traffic is light, with construction fencing and rails along the left. Ahead at the crosswalk, a pedestrian in a gray coat with a backpack walks rightward across the ego lane toward the right sidewalk, occupying the path. Farther ahead slightly left, a bicyclist rides away along the center of the lane and continues straight ahead, potentially setting the pace if the car proceeds. On the left edge at the crosswalk, another pedestrian waits near the curb, close to the ego lane. Guardrails and cones narrow the approach near the junction.", "hazard_reasoning": "There is a pedestrian wearing a gray coat, carrying a backpack, and crossing the street at a crosswalk to the right side. The pedestrian is entering the vehicle's path at the crosswalk, so you should yield to avoid collision."}
{"id": "train_01487", "split": "train", "clip_key": "titan_clip_744_000522_movie", "source": {"subset": "titan", "scenario": "clip_744", "frame": "000522"}, "frames": ["titan_clip_744_000522_movie_t-3.jpg", "titan_clip_744_000522_movie_t-2.jpg", "titan_clip_744_000522_movie_t-1.jpg", "titan_clip_744_000522_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban shopping street with a single narrow undivided lane runs ahead; the pavement looks smooth and vehicle traffic is absent while pedestrian activity is moderate. On the right edge near the curb, a pedestrian in a black T-shirt walks toward the ego car along the roadway and may enter the travel path. Ahead in the center of the lane, two pedestrians walk away in the same direction, occupying the lane and constraining the available path. At the left storefront, another person stands close to the curb and begins to step toward the road near the ego lane. Shop displays and stacked crates protrude from the right sidewalk, narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, walking on the right side of the road, towards the ego car. Since the pedestrian is moving toward the vehicle, the driver should be aware of their proximity to avoid a potential collision."}
{"id": "train_01488", "split": "train", "clip_key": "titan_clip_229_000390_movie", "source": {"subset": "titan", "scenario": "clip_229", "frame": "000390"}, "frames": ["titan_clip_229_000390_movie_t-3.jpg", "titan_clip_229_000390_movie_t-2.jpg", "titan_clip_229_000390_movie_t-1.jpg", "titan_clip_229_000390_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked sedan", "environment_perception": "A narrow urban shopping street with a single lane and brick paving runs between tall buildings, with no divider and very light vehicle traffic; movement is slow due to pedestrians. Ahead on the left, a black sedan is parked on the side of the road, narrowing the usable lane. On the right edge near storefronts, several pedestrians walk toward the camera, some edging into the roadway alongside the curb. Farther ahead, a pedestrian proceeds along the middle of the lane away from the ego vehicle and effectively sets the pace. Another person waits at the left curb near bicycles by a tree. Cones and shop signboards line the edges and further constrict the corridor.", "hazard_reasoning": "There is a black sedan parked on the left side of the road. This reduces the available road width, so the driver must manoeuvre carefully to avoid a collision."}
{"id": "train_01489", "split": "train", "clip_key": "2020-0204-103442_040907_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "040907"}, "frames": ["2020-0204-103442_040907_movie_t-3.jpg", "2020-0204-103442_040907_movie_t-2.jpg", "2020-0204-103442_040907_movie_t-1.jpg", "2020-0204-103442_040907_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, the pavement is smooth, and traffic is heavy and momentarily stopped. A white highway bus is stopped directly ahead in the ego lane due to congestion, blocking the lane and holding the ego vehicle. To the left, a box truck in the adjacent lane is halted alongside, narrowing maneuvering room. To the right, a silver car in the next lane is also stopped slightly ahead and stays in its lane.", "hazard_reasoning": "There is a white bus stopped in front of the ego car in the ego lane, because of traffic congestion. The stopped bus due to congestion ahead requires the driver to stop promptly to avoid a rear-end collision."}
{"id": "train_01490", "split": "train", "clip_key": "2020-0228-102841_029898_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "029898"}, "frames": ["2020-0228-102841_029898_movie_t-3.jpg", "2020-0228-102841_029898_movie_t-2.jpg", "2020-0228-102841_029898_movie_t-1.jpg", "2020-0228-102841_029898_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Be aware", "environment_perception": "An urban two-way road with red, patched pavement curves left, marked by double yellow lines and flanked by cones and temporary railings for roadside construction. Traffic is light with no vehicles moving ahead or oncoming. On the left shoulder ahead, a construction worker holding an orange baton stands by the barrier and signals near the narrow work zone, which may constrain the ego vehicle's pace through the bend. A white van is stopped on the right curb beside the camera, static and close to the lane edge but not blocking the path. The curve and adjacent work area create a partially blind approach around the building.", "hazard_reasoning": "There is a construction work holding an orange baton and standing on the left side of the road. As an active work zone could encroach into the driving path, the driver should be aware of workers and barriers close to the lane."}
{"id": "train_01491", "split": "train", "clip_key": "2020-0220-151845_030076_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-151845_030076_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-151845_030076_movie_t-3_augB1.jpg", "2020-0220-151845_030076_movie_t-2_augB1.jpg", "2020-0220-151845_030076_movie_t-1_augB1.jpg", "2020-0220-151845_030076_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, the pavement is smooth, and a right-side barrier separates traffic with overall moderate flow. Directly ahead in the ego lane, a pink flatbed truck covered with a yellow tarp slows and constrains the ego car's pace as vehicles bunch ahead. In the adjacent right lane, a small dark minivan travels slightly ahead in the same direction. Along the left curb, a white van is stopped on the shoulder. Prohibitory roadside signs are posted on the left.", "hazard_reasoning": "There is a pink truck slowing in the ego lane, in front of the ego-car, because of traffic congestion ahead on the road. You need to reduce speed to maintain a safe following distance and avoid a rear-end collision under these slowing conditions."}
{"id": "train_01492", "split": "train", "clip_key": "titan_clip_1130_000564_movie", "source": {"subset": "titan", "scenario": "clip_1130", "frame": "000564"}, "frames": ["titan_clip_1130_000564_movie_t-3.jpg", "titan_clip_1130_000564_movie_t-2.jpg", "titan_clip_1130_000564_movie_t-1.jpg", "titan_clip_1130_000564_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban residential scene shows a very narrow two-way street with no median and smooth pavement; no vehicles are present so traffic is light as the lane gently curves right under roadside trees. A male pedestrian in a white shirt and black pants walks away on the left side in the ego lane, occupying the path and setting a slow pace. Beside him on the far left, a woman with a blue bag also walks away close to the buildings, still within the lane. Farther ahead, several other pedestrians are visible along the center and right edge, some moving away and one approaching, keeping close to the curb but remaining near the travel lane.", "hazard_reasoning": "There is a male pedestrian wearing a white shirt and black pants, who is walking down the left side of the road, away from the ego-car, in the ego lane. The pedestrian is in the vehicle's path and may step further into the lane, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_01493", "split": "train", "clip_key": "2020-0205-152530_010899_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "010899"}, "frames": ["2020-0205-152530_010899_movie_t-3.jpg", "2020-0205-152530_010899_movie_t-2.jpg", "2020-0205-152530_010899_movie_t-1.jpg", "2020-0205-152530_010899_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of merging vehicle.", "environment_perception": "An urban arterial with two main same-direction lanes and a bollard-separated curb lane runs straight under bright sun; the asphalt looks dry and traffic is moderate. Ahead in the left lane, a white hatchback slows because a vehicle in front of it changes lanes into that lane, briefly constraining the ego vehicle's pace. Slightly right ahead, a dark car moves left to merge into the left lane in front of the hatchback and continues forward. Farther ahead, several white vans travel steadily in the center and curb lanes with reasonable gaps. Flexible posts and hashed markings clearly divide the curb lane from the through lanes.", "hazard_reasoning": "There's a white hatchback slowing down, in the left lane, from the left lane, because there's a vehicle in front of it, changing lanes, into its lane. Be aware that the merging vehicle may force sudden braking or lane adjustment."}
{"id": "train_01494", "split": "train", "clip_key": "titan_clip_293_000204_movie", "source": {"subset": "titan", "scenario": "clip_293", "frame": "000204"}, "frames": ["titan_clip_293_000204_movie_t-3.jpg", "titan_clip_293_000204_movie_t-2.jpg", "titan_clip_293_000204_movie_t-1.jpg", "titan_clip_293_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban back street with close-set buildings has a single narrow two-way lane without a centerline; the asphalt looks smooth and traffic is very light. On the left edge ahead, a pedestrian in a white shirt with a bicycle approaches toward the ego car along the lane, potentially encroaching on the ego path. Bicycles are parked along the right curb and a car sits recessed in a left-side garage, slightly tightening the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, holding a bicycle, walking on the left side of the road, towards the ego car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should slow down to avoid a collision."}
{"id": "train_01495", "split": "train", "clip_key": "titan_clip_1225_000360_movie", "source": {"subset": "titan", "scenario": "clip_1225", "frame": "000360"}, "frames": ["titan_clip_1225_000360_movie_t-3.jpg", "titan_clip_1225_000360_movie_t-2.jpg", "titan_clip_1225_000360_movie_t-1.jpg", "titan_clip_1225_000360_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around pedestrian", "environment_perception": "A narrow urban shopping street with a single undivided lane runs between storefronts and bollards, the smooth pavement slightly worn and vehicle traffic light. A pedestrian in black pants carrying an umbrella walks toward the ego vehicle along the right edge of the lane, potentially entering its path. Two pedestrians just ahead on the right sidewalk stroll near the curb and drift slightly toward the roadway, relevant as they could step out. Farther ahead, a small group occupies the center of the lane walking away from the camera, limiting the ego vehicle's pace. Tight bollard lines on both sides reduce lateral clearance.", "hazard_reasoning": "There is a pedestrian wearing black pants, carrying an umbrella, walking on the right side of the road, towards the ego car. The pedestrian may step into the lane unexpectedly, so the driver should carefully manoeuvre around them."}
{"id": "train_01496", "split": "train", "clip_key": "2020-0220-102630_077468_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "077468"}, "frames": ["2020-0220-102630_077468_movie_t-3.jpg", "2020-0220-102630_077468_movie_t-2.jpg", "2020-0220-102630_077468_movie_t-1.jpg", "2020-0220-102630_077468_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction passes under an overpass, bordered by sidewalks and railings; the pavement looks smooth and traffic flows at a moderate, steady pace. A white van ahead in the ego left lane pulls away as traffic ahead moves, opening its gap from the camera car. A small gray hatchback travels slightly ahead in the right lane at a similar speed, remaining in the ego vehicle's forward field. A dark gray car runs alongside to the right of the ego, parallel to the lane line, which prevents an immediate move into the right lane. No traffic signals are visible in the scene.", "hazard_reasoning": "There is a white van driving away from the ego car, in the ego lane, because traffic ahead is moving. The driver should follow the vehicle ahead to maintain a safe distance and anticipate any sudden slowdowns."}
{"id": "train_01497", "split": "train", "clip_key": "titan_clip_1164_000444_movie", "source": {"subset": "titan", "scenario": "clip_1164", "frame": "000444"}, "frames": ["titan_clip_1164_000444_movie_t-3.jpg", "titan_clip_1164_000444_movie_t-2.jpg", "titan_clip_1164_000444_movie_t-1.jpg", "titan_clip_1164_000444_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with one lane each way and no median stretches ahead, the pavement smooth and traffic light. A large box truck is stopped ahead in the ego lane by the left curb as workers unload boxes onto a handcart that juts into the roadway, narrowing the available lane. A pedestrian wearing black pants and a gray shirt walks away along the left side of the road near the truck, parallel to traffic. Farther ahead, a small white car continues away down the street in the same direction. Other pedestrians remain on the sidewalks and parked vehicles line both sides, with no prominent signals visible.", "hazard_reasoning": "There is a pedestrian wearing black pants and a gray shirt, walking on the left side of the road, away from the ego car. The driver should slow down to maintain a safe distance and be prepared if the pedestrian steps into the roadway."}
{"id": "train_01498", "split": "train", "clip_key": "2020-0131-103016_023957_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "023957"}, "frames": ["2020-0131-103016_023957_movie_t-3.jpg", "2020-0131-103016_023957_movie_t-2.jpg", "2020-0131-103016_023957_movie_t-1.jpg", "2020-0131-103016_023957_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road rises gently with smooth pavement and moderate same-direction traffic flowing steadily. A white box truck drives directly ahead in the ego lane at a steady pace, effectively setting the ego car's speed. A larger white box truck in the adjacent right lane runs slightly ahead, continuing straight parallel to the ego vehicle. Pedestrians cluster along the left sidewalk near the crosswalk, standing and walking by the railings without stepping into the road. An overhead traffic signal ahead shows green.", "hazard_reasoning": "There is a white truck driving in front of the ego car in the ego lane. It may brake suddenly at the red light or obstruct your view of traffic signals, so be cautious."}
{"id": "train_01499", "split": "train", "clip_key": "titan_clip_1349_000162_movie", "source": {"subset": "titan", "scenario": "clip_1349", "frame": "000162"}, "frames": ["titan_clip_1349_000162_movie_t-3.jpg", "titan_clip_1349_000162_movie_t-2.jpg", "titan_clip_1349_000162_movie_t-1.jpg", "titan_clip_1349_000162_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "A narrow urban two-way street with no center line and fair asphalt runs between buildings, with a low fence and rows of parked scooters on the left; traffic is light. A silver sedan ahead in the ego lane moves slowly toward a small junction, setting the pace. On the right, a pedestrian wearing a white T-shirt and black pants steps off the curb and crosses from right to left ahead, entering the ego lane. Another pedestrian walks along the right edge by the building without deviating into the roadway. A triangular regulatory sign is visible at the junction ahead.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and black pants, and crossing the street from right to left, on the right side of the road. The pedestrian is entering the lane ahead, so the driver should yield to avoid a potential collision."}
{"id": "train_01500", "split": "train", "clip_key": "titan_clip_820_000072_movie", "source": {"subset": "titan", "scenario": "clip_820", "frame": "000072"}, "frames": ["titan_clip_820_000072_movie_t-3.jpg", "titan_clip_820_000072_movie_t-2.jpg", "titan_clip_820_000072_movie_t-1.jpg", "titan_clip_820_000072_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of cones on the right side", "environment_perception": "A narrow urban two-way street with no median and smooth pavement runs between buildings, and traffic is light with no moving vehicles immediately ahead. On the left ahead, a pedestrian walks toward the camera behind a metal guardrail, separated from the travel lane. On the right sidewalk by the brick building, another person stands using a phone as a row of traffic cones on the right side of the road marks the curb and slightly narrows the lane. Farther ahead on the left, a white car is parked in a bay and remains stationary.", "hazard_reasoning": "There are traffic cones on the right side of the road, indicating a work or obstruction zone close to the driving lane, so the driver should adjust position or speed to safely navigate past them."}
{"id": "train_01501", "split": "train", "clip_key": "2020-0214-102601_027049_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "027049"}, "frames": ["2020-0214-102601_027049_movie_t-3.jpg", "2020-0214-102601_027049_movie_t-2.jpg", "2020-0214-102601_027049_movie_t-1.jpg", "2020-0214-102601_027049_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with three same-direction lanes and a narrow grassy median separating oncoming traffic; the pavement is smooth and traffic flows steadily. A white box truck ahead in the ego lane proceeds straight at a steady pace, setting the ego car's speed. A silver sedan in the lane to the left comes up alongside and gradually passes while holding its lane, posing no immediate conflict. A black minivan in the right adjacent lane continues ahead slightly faster than the truck without drifting. Beyond the median, oncoming traffic moves independently and remains well separated.", "hazard_reasoning": "There is a white truck moving forward in the ego lane in front of the ego car, because of the green traffic light. The green signal means the truck is starting to move, so you should follow it promptly to maintain safe distance and keep traffic flowing smoothly."}
{"id": "train_01502", "split": "train", "clip_key": "titan_clip_746_000252_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_746_000252_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_746_000252_movie_t-3_augB1.jpg", "titan_clip_746_000252_movie_t-2_augB1.jpg", "titan_clip_746_000252_movie_t-1_augB1.jpg", "titan_clip_746_000252_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrians", "environment_perception": "A narrow urban street with buildings tight to the curb has no median and worn but intact pavement, and traffic is light with no moving vehicles ahead. A group of pedestrians wearing white shirts and black pants walks away from the ego vehicle in the middle of the road ahead, occupying the path and constraining the pace. On the right edge, a man walks toward the camera along the curb, partly in the roadway and close to the travel lane. Farther ahead on the right, another person moves with a bicycle near the sidewalk. Several vehicles are parked along the left, including a white sedan at the foreground that narrows the usable lane.", "hazard_reasoning": "There is a group of pedestrians wearing black pants and white shirts and walking away from the ego car in the middle of the road. The driver should yield because the pedestrians are crossing the lane ahead and require right of way to pass safely."}
{"id": "train_01503", "split": "train", "clip_key": "2020-0131-135401_000948_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "000948"}, "frames": ["2020-0131-135401_000948_movie_t-3.jpg", "2020-0131-135401_000948_movie_t-2.jpg", "2020-0131-135401_000948_movie_t-1.jpg", "2020-0131-135401_000948_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane each direction is separated by a solid orange centerline; the pavement is smooth and overall traffic is light but momentarily impeded. A white box truck is stopped directly ahead in the ego lane, in front of the ego car, blocking the path. On the left edge, a bicyclist rides forward in the painted bike lane beside the stopped truck, passing close to the ego vehicle. Two pedestrians walk ahead on the left sidewalk near the truck but remain off the roadway. No salient signals or speed signs are visible, and no immediate oncoming vehicles appear in the opposing lane.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The stopped truck blocks the driving path and could lead to a collision if you fail to stop."}
{"id": "train_01504", "split": "train", "clip_key": "2020-0131-135401_008858_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008858"}, "frames": ["2020-0131-135401_008858_movie_t-3.jpg", "2020-0131-135401_008858_movie_t-2.jpg", "2020-0131-135401_008858_movie_t-1.jpg", "2020-0131-135401_008858_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane each way and no median runs between apartment buildings; the pavement looks smooth, a work zone lines the right side, and traffic is light and slow. Ahead in the ego lane, a white box truck drives away from the ego car at low speed, setting the pace. At the near left corner, two pedestrians wait by the crosswalk at the curb, close enough that they may enter the ego lane. On the right shoulder, a uniformed worker stands beside cones at the roadwork, near parked construction vehicles, close to the travel path as vehicles pass the narrowed oncoming side. No salient signal aspect is visible.", "hazard_reasoning": "There's a white truck driving away from the ego car, in the ego lane. The construction barriers intruding into the right lane reduce visibility, so the driver should follow the vehicle ahead to maintain a safe path."}
{"id": "train_01505", "split": "train", "clip_key": "titan_clip_326_000570_movie", "source": {"subset": "titan", "scenario": "clip_326", "frame": "000570"}, "frames": ["titan_clip_326_000570_movie_t-3.jpg", "titan_clip_326_000570_movie_t-2.jpg", "titan_clip_326_000570_movie_t-1.jpg", "titan_clip_326_000570_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban alleyway with no lane markings opens ahead from a paved plaza onto a narrow asphalt road between tall buildings; the surface is clean and traffic is light, with pedestrian activity dominating. Two pedestrians wearing black pants and carrying backpacks cross in the middle of the ego lane directly ahead, slowing progress. At the near left corner, a man and a woman walk from left to right across the vehicle's path, continuing into the alley. On the right edge by a dark shopfront, two people stand at the curb facing the lane, as another steps along the frontage. A blue pedestrian-zone sign and a convex mirror are mounted on a pole at the entrance, and temporary fencing lines the left side.", "hazard_reasoning": "There's are two pedestrians, wearing black pants and carrying a backpack, are crossing the street, in the middle of the ego lane. The driver should stop to avoid colliding with them as they cross directly in front of the vehicle."}
{"id": "train_01506", "split": "train", "clip_key": "2020-0129-144857_001494_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "001494"}, "frames": ["2020-0129-144857_001494_movie_t-3.jpg", "2020-0129-144857_001494_movie_t-2.jpg", "2020-0129-144857_001494_movie_t-1.jpg", "2020-0129-144857_001494_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane per direction and no median runs between buildings; pavement is smooth and traffic is generally light, with brief slowing ahead. A black van ahead in the ego lane decelerates and comes to a stop, constrained by congestion ahead, so it blocks the ego vehicle's path. One oncoming car approaches in the right-side lane at a steady pace, remaining in its lane and posing no conflict. A pedestrian on the right sidewalk walks along the storefronts without approaching the roadway. Metal railings line both curbs and several parked vehicles sit along the left, narrowing shoulders but not the travel lane.", "hazard_reasoning": "There is a black van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted van due to the congestion."}
{"id": "train_01507", "split": "train", "clip_key": "2020-0131-135401_022675_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "022675"}, "frames": ["2020-0131-135401_022675_movie_t-3.jpg", "2020-0131-135401_022675_movie_t-2.jpg", "2020-0131-135401_022675_movie_t-1.jpg", "2020-0131-135401_022675_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of left lane construction ahead.", "environment_perception": "An urban multi-lane road curves gently right with smooth pavement and light traffic; the lane to the left of the ego is lined with red cones indicating a coned-off construction area. A dark car ahead in the ego lane travels steadily and effectively sets the pace. Several trucks are stopped along the curb to the right, their bodies protruding slightly into the lane and narrowing the passage as the ego vehicle draws alongside. No signals or speed signs are salient in view, and there are no obvious oncoming vehicles.", "hazard_reasoning": "There are red traffic cones in the left side of the road, which indicate that there is construction work ahead in the lane to the left of the ego-car. The cones narrow the left lane, so the driver should be aware to avoid sudden maneuvers."}
{"id": "train_01508", "split": "train", "clip_key": "titan_clip_473_000186_movie", "source": {"subset": "titan", "scenario": "clip_473", "frame": "000186"}, "frames": ["titan_clip_473_000186_movie_t-3.jpg", "titan_clip_473_000186_movie_t-2.jpg", "titan_clip_473_000186_movie_t-1.jpg", "titan_clip_473_000186_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "An urban back street with a narrow single-lane carriageway paved with interlocking bricks appears damp, with buildings tight to the curb and light vehicle traffic moving slowly due to a partial blockage. A group of pedestrians ahead walks toward the ego vehicle in the middle of the lane to get around a parked truck on the right, occupying the path and constraining progress. On the left foreground, a backpacked pedestrian walks along the curb past the ego lane close to the vehicle's path. On the right foreground, another pedestrian passes by near the shopfront in the opposite direction, also close to the lane. A work truck stands on the right with cones and materials, narrowing the roadway and creating a pinch point.", "hazard_reasoning": "There is a group of pedestrians walking in front of and towards the ego car, because of the parked vehicle. Be aware of pedestrians ahead due to limited visibility caused by the parked truck."}
{"id": "train_01509", "split": "train", "clip_key": "2020-0203-154554_064632_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "064632"}, "frames": ["2020-0203-154554_064632_movie_t-3.jpg", "2020-0203-154554_064632_movie_t-2.jpg", "2020-0203-154554_064632_movie_t-1.jpg", "2020-0203-154554_064632_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way road approaches a wide signalized intersection with painted islands and smooth pavement; traffic is light and currently stopped at a red light. A gray van is directly ahead in the ego lane, stopped because the traffic signal is red. A motorcycle waits at the left edge beside the van near the stop line, adjacent to the ego vehicle. A pedestrian crosses from right to left in the marked crosswalk ahead of the queue. The overhead traffic signals show red, and a pedestrian overpass spans the junction.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid rear-ending the stopped van due to the red light."}
{"id": "train_01510", "split": "train", "clip_key": "2020-0220-102630_016387_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "016387"}, "frames": ["2020-0220-102630_016387_movie_t-3.jpg", "2020-0220-102630_016387_movie_t-2.jpg", "2020-0220-102630_016387_movie_t-1.jpg", "2020-0220-102630_016387_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes and no physical median curves gently right; the asphalt looks smooth and traffic is heavy and stop-and-go. A white sedan is stopped directly ahead in the ego lane because congestion blocks the way, holding the ego vehicle. Farther ahead in the same lane, a tall box truck waits in the queue and inches forward, continuing to set the slow pace. In the right lane, a small flatbed truck alongside progresses slowly parallel to the ego vehicle, limiting any chance to merge. A roadside circular sign shows 50.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid rear-ending the halted vehicle."}
{"id": "train_01511", "split": "train", "clip_key": "titan_clip_1271_000186_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1271_000186_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1271_000186_movie_t-3_augB1.jpg", "titan_clip_1271_000186_movie_t-2_augB1.jpg", "titan_clip_1271_000186_movie_t-1_augB1.jpg", "titan_clip_1271_000186_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway and no center divider curves gently right; the pavement looks smooth and vehicular traffic is light. The ego vehicle proceeds as several pedestrians occupy the roadway. Ahead in the lane, a pedestrian in a blue shirt carrying a backpack walks away down the middle of the road, directly in the vehicle's path and constraining its pace. Slightly ahead to the left, two other pedestrians walk in the roadway in the same direction and may step into the path. Farther ahead near the right curb, another person lingers by the planter without entering the lane. Parked bicycles and a small roadside cone line the left edge.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, carrying a backpack, walking in the middle of the road, away from the ego car. The pedestrian's position in the center of the lane poses a high risk of collision, so the driver should slow down to maintain safety."}
{"id": "train_01512", "split": "train", "clip_key": "2020-0212-102546_017414_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0212-102546_017414_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0212-102546_017414_movie_t-3_augB1.jpg", "2020-0212-102546_017414_movie_t-2_augB1.jpg", "2020-0212-102546_017414_movie_t-1_augB1.jpg", "2020-0212-102546_017414_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane in each direction curves gently right; the pavement looks smooth and traffic is moderately heavy and slow-moving. A white SUV-like vehicle directly ahead in the ego lane slows because of congestion further along the road, constraining our speed. A line of oncoming trucks and cars, including a green-tarped small truck, approaches in the opposing lane and passes close to the center line. Pedestrians stand and walk on the left sidewalk behind railings, remaining clear of the roadway.", "hazard_reasoning": "There is a white mid-SUV slowing in the ego lane because of traffic congestion ahead on the road. Slow down to maintain a safe distance and adapt to the congested traffic ahead."}
{"id": "train_01513", "split": "train", "clip_key": "2020-0213-143552_045425_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "045425"}, "frames": ["2020-0213-143552_045425_movie_t-3.jpg", "2020-0213-143552_045425_movie_t-2.jpg", "2020-0213-143552_045425_movie_t-1.jpg", "2020-0213-143552_045425_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the stopped truck.", "environment_perception": "An urban two-lane road with a planted median dividing oncoming traffic and smooth pavement has moderate flow that bunches to a stop at a signalized intersection. A white semi truck directly ahead in the ego lane is stopped at a red light, holding the ego vehicle. A green taxi in the adjacent left lane is also stopped slightly behind and to the left, aligning with the truck and limiting lateral movement. On the right side of the intersection, a cyclist rides across the crosswalk from right to left in front of the stopped queue. Overhead signals show red for the ego direction.", "hazard_reasoning": "There is a white semi truck stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop to avoid a collision with the halted truck at the red light."}
{"id": "train_01514", "split": "train", "clip_key": "titan_clip_546_000306_movie", "source": {"subset": "titan", "scenario": "clip_546", "frame": "000306"}, "frames": ["titan_clip_546_000306_movie_t-3.jpg", "titan_clip_546_000306_movie_t-2.jpg", "titan_clip_546_000306_movie_t-1.jpg", "titan_clip_546_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking toward vehicle", "environment_perception": "An urban shopping street with a very narrow two-way unmarked lane runs between storefronts; the pavement is dry and slightly worn, and traffic is light as the ego vehicle rolls slowly. Ahead slightly left, a small dark car approaches in the oncoming stream at low speed, occupying the center and potentially constraining the ego vehicle's passage. On the right edge mid-range, a pedestrian wearing a brown dress and carrying a handbag walks toward the ego car along the curb because there is no sidewalk, so she may drift into the ego path. Farther ahead near the left edge, another pedestrian walks away close to the buildings with little effect on the lane. A bicycle is parked against the left wall, further narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a brown dress and carrying a handbag, walking on the right side of the road, toward the ego car, because there is no sidewalk. The driver should be aware because the pedestrian is walking in the roadway without a dedicated sidewalk, increasing collision risk."}
{"id": "train_01515", "split": "train", "clip_key": "2020-0228-150133_063724_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "063724"}, "frames": ["2020-0228-150133_063724_movie_t-3.jpg", "2020-0228-150133_063724_movie_t-2.jpg", "2020-0228-150133_063724_movie_t-1.jpg", "2020-0228-150133_063724_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with one lane in each direction runs straight, separated by double white lines acting as a painted median; the pavement looks smooth and traffic is heavy and slow. Directly ahead in the ego lane, a black sedan slows because of traffic congestion ahead, constraining the ego car's pace. Farther ahead in the same lane near an overhead gantry, a box truck creeps in the queue, contributing to the slowdown and forming a moving bottleneck. To the right of the median, oncoming cars, including a white SUV, proceed steadily toward the camera without conflicting with the ego lane.", "hazard_reasoning": "There is a black sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance as the sedan decelerates due to congestion."}
{"id": "train_01516", "split": "train", "clip_key": "2020-0214-102601_007719_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "007719"}, "frames": ["2020-0214-102601_007719_movie_t-3.jpg", "2020-0214-102601_007719_movie_t-2.jpg", "2020-0214-102601_007719_movie_t-1.jpg", "2020-0214-102601_007719_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban intersection on a two-lane road with no median, the pavement looks smooth and traffic is light as the ego vehicle pauses at the near-side zebra crossing. A small car ahead in the same left lane continues straight through the junction and moves away, occupying our path. An oncoming white van in the opposite lane approaches from ahead-right and proceeds through the intersection. A cyclist on the right-side sidewalk rolls toward the corner and may enter the crosswalk near our path. Overhead traffic signals hang above the junction, and several parked vehicles and bicycles line the left curb beside shops.", "hazard_reasoning": "The road is clear with no obstacles or sudden movements detected, so the driver can maintain their speed safely."}
{"id": "train_01517", "split": "train", "clip_key": "2020-0220-151845_057240_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "057240"}, "frames": ["2020-0220-151845_057240_movie_t-3.jpg", "2020-0220-151845_057240_movie_t-2.jpg", "2020-0220-151845_057240_movie_t-1.jpg", "2020-0220-151845_057240_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to keep safe distance", "environment_perception": "An urban divided road runs beneath an elevated expressway, with two lanes in the ego direction separated from opposite traffic by a guardrail; the dry pavement appears smooth and traffic is heavy and slow. A red truck directly ahead in the ego lane slows to a crawl because of congestion ahead, constraining the ego-car's pace. In the adjacent right lane, a line of light vans and cars creeps forward beside the ego vehicle, leaving little room for lane changes. Close to the camera on the far right, a black SUV inches along in the same queue, staying near the lane boundary. Opposite-direction vehicles move separately on the far-left roadway and do not interact.", "hazard_reasoning": "There is a red truck slowing down ahead of the ego-car, in the ego lane, because of traffic congestion ahead. Slow down to maintain a safe following distance and avoid a rear-end collision under congested conditions."}
{"id": "train_01518", "split": "train", "clip_key": "2020-0207-101955_121721_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "121721"}, "frames": ["2020-0207-101955_121721_movie_t-3.jpg", "2020-0207-101955_121721_movie_t-2.jpg", "2020-0207-101955_121721_movie_t-1.jpg", "2020-0207-101955_121721_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated viaduct, with smooth asphalt and a raised curb on the right; traffic is heavy and mostly stop-and-go in the same-direction lanes. A white van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle in place. To the left, a pink dump truck creeps forward beside the ego car and inches ahead, limiting chances to merge. Farther ahead in the left lane, a large box truck remains stationary in the queue, adding to the bottleneck.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle and maintain a safe following distance."}
{"id": "train_01519", "split": "train", "clip_key": "2020-0206-101736_089384_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "089384"}, "frames": ["2020-0206-101736_089384_movie_t-3.jpg", "2020-0206-101736_089384_movie_t-2.jpg", "2020-0206-101736_089384_movie_t-1.jpg", "2020-0206-101736_089384_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with two same-direction lanes runs toward a signalized intersection, bordered by a raised hedge median; the pavement looks smooth and traffic is heavy with vehicles queued. A white flatbed truck directly ahead in the ego lane is stopped because the light is red, so it blocks the ego vehicle's path. To the left, a white box truck and several cars wait in the adjacent lane, holding position alongside and making a lane change impractical. Beyond the median on the right, a dark truck in the oncoming lane also waits near the junction.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of a red traffic light. Since the white truck is stopped by the red light in your lane, you should stop to avoid a collision and comply with the signal."}
{"id": "train_01520", "split": "train", "clip_key": "2020-0228-150133_040586_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "040586"}, "frames": ["2020-0228-150133_040586_movie_t-3.jpg", "2020-0228-150133_040586_movie_t-2.jpg", "2020-0228-150133_040586_movie_t-1.jpg", "2020-0228-150133_040586_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban two-way arterial with two same-direction lanes runs straight on dry, smooth pavement, separated from oncoming traffic by a painted double-line median; overall flow is moderate with brief slowdowns. Directly ahead in the ego lane, a gray sedan slows because of congestion ahead and constrains the ego vehicle's pace. In the adjacent left lane, a white kei car travels slightly ahead at a steady speed, continuing parallel without signaling. To the right beyond the median, a white van approaches in the opposite lane and passes by without interaction. A pedestrian overpass spans the road ahead; no unusual obstacles are visible.", "hazard_reasoning": "There is a gray sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The sedan's slowdown signals congestion ahead, so you should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_01521", "split": "train", "clip_key": "2020-0131-135401_002637_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "002637"}, "frames": ["2020-0131-135401_002637_movie_t-3.jpg", "2020-0131-135401_002637_movie_t-2.jpg", "2020-0131-135401_002637_movie_t-1.jpg", "2020-0131-135401_002637_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with a solid yellow centerline and smooth pavement appears, with light to moderate flow as vehicles approach a signalized intersection. A white box truck directly ahead in the ego lane slows because of traffic congestion ahead, controlling the ego car's pace. A small truck comes toward the camera in the right-hand oncoming lane near the intersection and continues through without encroaching. Two pedestrians on the left sidewalk walk along the curb away from the camera and remain off the roadway.", "hazard_reasoning": "There is a white truck slowing down in front of the ego-car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and anticipate sudden speed reductions."}
{"id": "train_01522", "split": "train", "clip_key": "titan_clip_716_000108_movie", "source": {"subset": "titan", "scenario": "clip_716", "frame": "000108"}, "frames": ["titan_clip_716_000108_movie_t-3.jpg", "titan_clip_716_000108_movie_t-2.jpg", "titan_clip_716_000108_movie_t-1.jpg", "titan_clip_716_000108_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban back street with a single narrow lane and no centerline runs between storefronts; the asphalt is worn but intact, and traffic is light. A cyclist ahead in the middle rides away along the ego vehicle's line at low speed, setting the pace. In the middle of the road slightly farther ahead, a pedestrian in a white shirt and black pants walks toward the ego vehicle, occupying the lane. On the left edge near the cones, another pedestrian stands by a shopfront, remaining near the curb. A blue no-parking sign is posted on the left. Orange cones, parked bicycles, and trash bags along the right narrow the usable roadway.", "hazard_reasoning": "There is a male pedestrian, wearing a white shirt and black pants, walking, in the middle of the road, toward the ego vehicle. The pedestrian's position in the center of the lane creates a risk of collision, so the driver should manoeuvre carefully to avoid hitting him."}
{"id": "train_01523", "split": "train", "clip_key": "titan_clip_446_000546_movie", "source": {"subset": "titan", "scenario": "clip_446", "frame": "000546"}, "frames": ["titan_clip_446_000546_movie_t-3.jpg", "titan_clip_446_000546_movie_t-2.jpg", "titan_clip_446_000546_movie_t-1.jpg", "titan_clip_446_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane and no median stretches ahead; pavement is smooth and traffic is light. Cones and a temporary barrier line the left sidewalk, slightly narrowing the roadway. A small white van travels ahead in the same lane at low speed and constrains the ego vehicle's pace. On the left edge of the ego lane, a pedestrian wearing white pants, a black shirt, and carrying a handbag walks forward in the roadway because other pedestrians are blocking the sidewalk, and the person may encroach further into the path. Additional pedestrians cluster along the left sidewalk near the cones and on the right sidewalk, moving past shops but remaining out of the lane.", "hazard_reasoning": "There's a pedestrian, wearing white pants, a black shirt, and carrying a handbag, walking on the left side of the road, in the ego lane, because there are other pedestrians blocking the sidewalk. The driver should slow down to avoid colliding with the pedestrian in the lane."}
{"id": "train_01524", "split": "train", "clip_key": "2020-0225-102455_015339_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "015339"}, "frames": ["2020-0225-102455_015339_movie_t-3.jpg", "2020-0225-102455_015339_movie_t-2.jpg", "2020-0225-102455_015339_movie_t-1.jpg", "2020-0225-102455_015339_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of the cyclist on the left.", "environment_perception": "An urban two-way road curves left, with the ego vehicle in the left lane; a low guardrail separates directions, the pavement is smooth, and traffic is light to moderate. On the left edge just ahead, a cyclist wearing a helmet and a black shirt rides away from the ego car along the shoulder, paralleling the lane and remaining close to the travel path through the bend. To the right, oncoming traffic consisting of a van and a car approaches in its lane and passes by without encroaching due to the divider. An overhead traffic signal governs the intersection ahead.", "hazard_reasoning": "There is a cyclist wearing a helmet and a black shirt who is cycling on the left side of the road away from the ego car. Since the cyclist is close to the travel lane, the driver should be cautious to allow adequate space and anticipate potential lateral movements."}
{"id": "train_01525", "split": "train", "clip_key": "2020-0206-142535_025775_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "025775"}, "frames": ["2020-0206-142535_025775_movie_t-3.jpg", "2020-0206-142535_025775_movie_t-2.jpg", "2020-0206-142535_025775_movie_t-1.jpg", "2020-0206-142535_025775_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of merging hatchback.", "environment_perception": "An urban multi-lane arterial runs between tall buildings, divided from oncoming lanes by a central median; the pavement is smooth and traffic is moderate. Directly ahead, a black hatchback in the ego lane shifts to the right lane in front of the ego car, creating space ahead. Ahead left, a white minivan in the neighboring lane cruises slightly slower and stays beside the ego vehicle, limiting lateral room. Farther ahead in the middle lanes, a white box truck travels steadily and governs the flow. Overhead traffic signals show green.", "hazard_reasoning": "There is a black hatchback lane-changing to the right lane in front of the ego car. The hatchback's merge into the ego-vehicle's lane may require the driver to adjust speed or trajectory to avoid a collision."}
{"id": "train_01526", "split": "train", "clip_key": "2020-0226-140503_082792_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "082792"}, "frames": ["2020-0226-140503_082792_movie_t-3.jpg", "2020-0226-140503_082792_movie_t-2.jpg", "2020-0226-140503_082792_movie_t-1.jpg", "2020-0226-140503_082792_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A busy urban arterial with several same-direction lanes runs between tall buildings; the pavement is dry and smooth, and traffic is heavy and stop-and-go. Directly ahead in the ego lane, a white hatchback is stopped because congestion stacks up downstream, holding the ego vehicle. To the left, a silver minivan alongside inches forward in its lane, restricting space for a leftward lane change. In the right lane ahead, a red car and other vehicles creep forward in the same queue, limiting options to bypass the blockage. Overhead lane signs show the left lane for left turns and the adjacent lanes for through travel.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, because of traffic congestion ahead. The stopped vehicle creates a risk of collision if you continue moving, so you should stop to maintain a safe distance."}
{"id": "train_01527", "split": "train", "clip_key": "titan_clip_825_000414_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_825_000414_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_825_000414_movie_t-3_augB1.jpg", "titan_clip_825_000414_movie_t-2_augB1.jpg", "titan_clip_825_000414_movie_t-1_augB1.jpg", "titan_clip_825_000414_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban side street with midrise buildings appears as a narrow two-way road without a centerline, bordered by green edge strips and sidewalks; the pavement is smooth and no vehicles pass in either direction, so traffic is light. Cones and barriers along the left curb form a small work zone that slightly narrows the roadway. Ahead in the middle of the road, a pedestrian wearing a white shirt and beige pants walks toward the ego vehicle while drifting toward the left side, potentially entering its path. Farther ahead, two pedestrians in the lane walk away from the camera near the center, occupying the travel space and constraining the approach. On the right edge by the green strip, another pedestrian walks toward the camera but stays out of the lane.", "hazard_reasoning": "A pedestrian wearing a white shirt and beige pants is walking in the middle of the road, toward the left side of the road and the ego car. The driver should slow down to avoid a collision as the pedestrian is encroaching into the vehicle's path."}
{"id": "train_01528", "split": "train", "clip_key": "titan_clip_1369_000324_movie", "source": {"subset": "titan", "scenario": "clip_1369", "frame": "000324"}, "frames": ["titan_clip_1369_000324_movie_t-3.jpg", "titan_clip_1369_000324_movie_t-2.jpg", "titan_clip_1369_000324_movie_t-1.jpg", "titan_clip_1369_000324_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian waiting to cross", "environment_perception": "A narrow urban two-way street with one lane in each direction has dry, slightly patched asphalt and no median, and traffic appears light. Ahead in the left-side ego lane, a cyclist rides away at low speed near the center, likely constraining the vehicle's pace. On the right, an oncoming cyclist approaches along the opposing lane and tracks near the centerline, reducing lateral space as they pass. At the right edge beside a parked white mini-truck, a pedestrian wearing a blue shirt and black pants waits to cross to the left, standing close to the travel lane and potentially entering the ego path. Cones and the parked truck tighten the usable roadway along the right side.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants waiting on the right side of the lane to cross to the left side. The pedestrian may step into the lane unexpectedly, so the driver should be prepared to slow down and remain alert."}
{"id": "train_01529", "split": "train", "clip_key": "2020-0207-151349_077256_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "077256"}, "frames": ["2020-0207-151349_077256_movie_t-3.jpg", "2020-0207-151349_077256_movie_t-2.jpg", "2020-0207-151349_077256_movie_t-1.jpg", "2020-0207-151349_077256_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial runs under an elevated expressway, with two lanes in the ego direction on dry pavement and a guardrail median to the right; traffic is heavy and slow. A brown truck directly ahead in the ego lane slows with brake lights as a queue builds ahead, constraining the ego car's pace. In the adjacent left lane, a white van slightly ahead creeps forward alongside the truck, limiting a potential lane change. Farther ahead in that lane a white box truck also moves slowly, adding to the backup. Opposing traffic beyond the median flows steadily to the right without affecting the ego vehicle.", "hazard_reasoning": "There is a brown truck slowing down in the ego-car lane, because there is traffic congestion ahead. The driver should slow down to keep a safe distance as the truck reduces speed due to congestion ahead."}
{"id": "train_01530", "split": "train", "clip_key": "titan_clip_606_000492_movie", "source": {"subset": "titan", "scenario": "clip_606", "frame": "000492"}, "frames": ["titan_clip_606_000492_movie_t-3.jpg", "titan_clip_606_000492_movie_t-2.jpg", "titan_clip_606_000492_movie_t-1.jpg", "titan_clip_606_000492_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way road and smooth pavement has light, slow-moving traffic. There is no median, and storefront railings line the left edge. Directly ahead, two pedestrians cross from left to right across the ego lane, the man wearing black pants, and they pass in front of the vehicle, constraining its pace. A small white van farther ahead in the same direction rolls slowly through the lane just beyond them, keeping speeds low. A white van is stopped along the right edge near the camera in the oncoming lane.", "hazard_reasoning": "There is a pedestrian wearing black pant on the right side of the road crossing the street from the left side. The driver should slow down because the pedestrian may step into the vehicle's path unexpectedly behind the parked van."}
{"id": "train_01531", "split": "train", "clip_key": "2020-0205-152530_058330_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "058330"}, "frames": ["2020-0205-152530_058330_movie_t-3.jpg", "2020-0205-152530_058330_movie_t-2.jpg", "2020-0205-152530_058330_movie_t-1.jpg", "2020-0205-152530_058330_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated expressway scene shows the ego-car on a single-lane on-ramp bordered by concrete walls and guardrails, approaching a merge with multi-lane traffic to the right; the asphalt is dry and flow is slow near the junction. A gray flatbed truck directly ahead in the ego lane slows and creeps forward because of congestion ahead, setting the ego-car's pace. In the adjacent mainline lanes to the right, several vehicles including a box truck pass steadily, forming a stream the ramp must wait to join. No pedestrians, cyclists, or obstacles appear.", "hazard_reasoning": "There is a gray truck slowing down in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision due to the truck's deceleration."}
{"id": "train_01532", "split": "train", "clip_key": "titan_clip_1015_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1015_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1015_000198_movie_t-3_augB1.jpg", "titan_clip_1015_000198_movie_t-2_augB1.jpg", "titan_clip_1015_000198_movie_t-1_augB1.jpg", "titan_clip_1015_000198_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around pedestrian", "environment_perception": "A dense urban shopping street with a single undivided narrow lane runs between storefronts and bollards on smooth pavement. Vehicle traffic is minimal while pedestrian activity is heavy and spills into the roadway. Ahead near the right edge, a pedestrian wearing a blue T-shirt and carrying a backpack crosses midblock from right to left through the ego lane. Several pedestrians farther ahead occupy the center of the lane and walk away from the camera, constraining forward movement. Others at the left curb cluster by the bollards and step to the edge of the roadway close to the path.", "hazard_reasoning": "There is a pedestrian carrying a backpack and wearing a blue t-shirt, crossing the street in the middle of the road, from the right side to the left side. The driver should manoeuvre around the pedestrian carefully to avoid a collision."}
{"id": "train_01533", "split": "train", "clip_key": "titan_clip_952_000558_movie", "source": {"subset": "titan", "scenario": "clip_952", "frame": "000558"}, "frames": ["titan_clip_952_000558_movie_t-3.jpg", "titan_clip_952_000558_movie_t-2.jpg", "titan_clip_952_000558_movie_t-1.jpg", "titan_clip_952_000558_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian ahead.", "environment_perception": "A narrow urban side street with no centerline and intact pavement shows light traffic in this two-way alley. On the right side ahead, a pedestrian in a white shirt and black pants walks toward the ego vehicle along the roadway, moving into the vehicle's path and constraining its pace. A white van is parked under a carport at the right-side lot entrance with its nose close to the lane, leaving limited clearance. A small cross street joins ahead, and a convex mirror on a pole marks the blind junction.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the right side of the road, towards the ego car. The pedestrian could step onto the road unexpectedly, so the driver should yield to avoid a collision."}
{"id": "train_01534", "split": "train", "clip_key": "2020-0127-132751_039669_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "039669"}, "frames": ["2020-0127-132751_039669_movie_t-3.jpg", "2020-0127-132751_039669_movie_t-2.jpg", "2020-0127-132751_039669_movie_t-1.jpg", "2020-0127-132751_039669_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial curves gently left with two lanes in the ego direction and a narrow curb with red bollards separating the oncoming lanes on the right; the pavement looks damp but smooth and traffic moves at a moderate, steady flow. Two small box trucks ahead in the ego lane and the adjacent lane proceed at similar speed around the curve, effectively setting the ego vehicle's pace. In the separated oncoming lane to the right, a white sedan passes near the foreground and a small truck approaches farther ahead, both confined behind the bollards. Overhead green route signs show E1 and E83 left.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01535", "split": "train", "clip_key": "2020-0204-150838_034703_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_034703_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_034703_movie_t-3_augB1.jpg", "2020-0204-150838_034703_movie_t-2_augB1.jpg", "2020-0204-150838_034703_movie_t-1_augB1.jpg", "2020-0204-150838_034703_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban avenue with multiple lanes in each direction and no physical median stretches ahead; the pavement is dry and intact, and traffic flows slowly in queues. Directly ahead in the ego lane, a white van slows due to congestion ahead, holding the ego vehicle to its pace. In the adjacent lane to the left, a black van proceeds alongside at low speed, limiting room for the ego vehicle to merge. In the opposite lanes to the right, a white mini-van approaches and passes as oncoming traffic, remaining separate from the ego path. A box truck stands at the left curb near a crosswalk, creating a narrow shoulder.", "hazard_reasoning": "There is a white van slowing down in the ego lane because of traffic congestion ahead. The van's reduction in speed indicates the traffic ahead is congested, so you should slow down to maintain a safe following distance."}
{"id": "train_01536", "split": "train", "clip_key": "titan_clip_9_000042_movie", "source": {"subset": "titan", "scenario": "clip_9", "frame": "000042"}, "frames": ["titan_clip_9_000042_movie_t-3.jpg", "titan_clip_9_000042_movie_t-2.jpg", "titan_clip_9_000042_movie_t-1.jpg", "titan_clip_9_000042_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Slow down for crossing pedestrians", "environment_perception": "An urban two-way street with one narrow lane each direction meets a cross street at a zebra crossing; the pavement is good and traffic is light with slow movement near the intersection. Two pedestrians with backpacks, one in red and one in gray, cross directly ahead from the near side on the crosswalk, occupying the ego lane and constraining the car to wait. A white van in the intersection ahead moves from left to right at low speed and lines up to continue along the far-side lane after the pedestrians pass. Several other pedestrians also cross on the far side, keeping the scene busy. A delivery truck is parked at the left curb near the corner with trolleys and signboards beside it, narrowing the approach.", "hazard_reasoning": "There are two pedestrians, carrying backpacks, one wearing a red t-shirt and red pants, the other wearing a gray shirt and gray pants, walking in the middle of the road in front of the ego-car, because there are objects blocking the sidewalk. These pedestrians are walking into the vehicle's path due to the blocked sidewalk, so the driver should slow down to avoid a potential collision."}
{"id": "train_01537", "split": "train", "clip_key": "titan_clip_125_000108_movie", "source": {"subset": "titan", "scenario": "clip_125", "frame": "000108"}, "frames": ["titan_clip_125_000108_movie_t-3.jpg", "titan_clip_125_000108_movie_t-2.jpg", "titan_clip_125_000108_movie_t-1.jpg", "titan_clip_125_000108_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked vehicle", "environment_perception": "An urban downtown street with mid-rise buildings has two same-direction lanes, no median, smooth pavement, and light traffic as the view approaches a small intersection. A black van is parked along the left curb in the ego lane, narrowing the usable space. Ahead near the center, a white box truck slows and turns right at the intersection, briefly occupying the lane and constraining the ego vehicle's pace. On the right sidewalk, two pedestrians linger near a shelter at the corner and continue along the walkway, staying clear of the road.", "hazard_reasoning": "There is a vehicle parked on the left side of the road, in the ego lane. The parked vehicle may obscure hazards ahead and restrict lane usage, so be aware of its position."}
{"id": "train_01538", "split": "train", "clip_key": "titan_clip_437_000222_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_437_000222_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_437_000222_movie_t-3_augB1.jpg", "titan_clip_437_000222_movie_t-2_augB1.jpg", "titan_clip_437_000222_movie_t-1_augB1.jpg", "titan_clip_437_000222_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban alley with a single shared lane and block-pattern pavement appears quiet, with light vehicle traffic; a tarp-covered small truck is parked on the right and protrudes into the lane. Ahead near this truck, two pedestrians-one in a dress and one in black pants-walk in the middle of the lane toward the ego vehicle because the parked vehicle narrows the passage, and they may enter the car's path. A man on the left sidewalk walks toward a doorway and stays off the roadway, while another person stands at the far right edge by foliage. Rows of parked bicycles along the right further constrict space.", "hazard_reasoning": "There are two pedestrians wearing a dress and black pants, walking in the middle of the lane toward the ego car, because of the parked vehicle. The driver should carefully manoeuvre around them to avoid a potential collision."}
{"id": "train_01539", "split": "train", "clip_key": "2020-0129-105040_005057_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "005057"}, "frames": ["2020-0129-105040_005057_movie_t-3.jpg", "2020-0129-105040_005057_movie_t-2.jpg", "2020-0129-105040_005057_movie_t-1.jpg", "2020-0129-105040_005057_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial with smooth pavement runs between tall buildings and is divided by a planted median with railings; traffic is moderate and flows steadily in the left-driving direction. A gray minivan ahead in the ego lane proceeds straight at a similar pace and effectively sets the ego vehicle's headway. Farther ahead in the same direction, a white box truck continues straight, leaving limited gap for the minivan. On the left, a white van travels alongside in the adjacent lane without merging. Across the median to the right, several trucks move steadily as oncoming traffic. Overhead blue directional signs are visible.", "hazard_reasoning": "There is a gray minivan driving in the ego lane. The minivan ahead could brake or slow unexpectedly, so follow the vehicle ahead to maintain a safe distance."}
{"id": "train_01540", "split": "train", "clip_key": "2020-0203-114632_037124_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "037124"}, "frames": ["2020-0203-114632_037124_movie_t-3.jpg", "2020-0203-114632_037124_movie_t-2.jpg", "2020-0203-114632_037124_movie_t-1.jpg", "2020-0203-114632_037124_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane per direction and no median runs beneath elevated structures; the pavement is patched but serviceable, and traffic in the left-side lane is slow and queued. A white van directly ahead in the ego lane is stopped because of traffic congestion and blocks the path. An oncoming silver car in the opposite lane to the right drives straight through the junction, remaining separated by the center line. A pedestrian on the left sidewalk walks along the railing parallel to the ego vehicle, while another pedestrian on the right sidewalk waits near the curb at the intersection without stepping into the road. Overhead traffic signals hang above the junction ahead.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop promptly to maintain a safe distance and avoid colliding with the stationary vehicle ahead."}
{"id": "train_01541", "split": "train", "clip_key": "2020-0212-102546_027074_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "027074"}, "frames": ["2020-0212-102546_027074_movie_t-3.jpg", "2020-0212-102546_027074_movie_t-2.jpg", "2020-0212-102546_027074_movie_t-1.jpg", "2020-0212-102546_027074_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the white van", "environment_perception": "An urban multilane arterial with a planted median separating oncoming traffic shows patched but serviceable pavement and light to moderate flow. Ahead of the ego car, a white van in the same lane moves left into the curbside lane, changing over directly in front and momentarily dictating the ego vehicle's pace. A small van is stopped at the left curb near the ego, narrowing the space in that lane as the maneuver happens. Farther ahead, a dark car in the right lane proceeds straight at a steady speed without interacting. An overhead circular sign posts a 50 speed limit.", "hazard_reasoning": "There is a white van lane changing in front of the ego car, from the ego lane to the left lane. This lane change could reduce your safe following distance; be aware of the white van to adjust speed accordingly."}
{"id": "train_01542", "split": "train", "clip_key": "2020-0226-140503_059478_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "059478"}, "frames": ["2020-0226-140503_059478_movie_t-3.jpg", "2020-0226-140503_059478_movie_t-2.jpg", "2020-0226-140503_059478_movie_t-1.jpg", "2020-0226-140503_059478_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with a single same-direction lane and no median runs straight ahead on dry, slightly worn pavement, and traffic is light. A white van is parked on the left edge of the ego lane, partially occupying the lane and constraining the path. On the right sidewalk, several pedestrians walk forward past shops, remaining behind the line of bollards and not entering the carriageway. At the left curb near the van, a person stands with a bicycle beside the travel lane, stationary and close to the roadway.", "hazard_reasoning": "There is a white van, parked in the ego-car lane, on the left side of the road. The obstructing parked van forces the driver to carefully manoeuvre around it, increasing the risk of collision with oncoming traffic or other road users if not anticipated."}
{"id": "train_01543", "split": "train", "clip_key": "titan_clip_476_000054_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_476_000054_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_476_000054_movie_t-3_augB1.jpg", "titan_clip_476_000054_movie_t-2_augB1.jpg", "titan_clip_476_000054_movie_t-1_augB1.jpg", "titan_clip_476_000054_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead.", "environment_perception": "An urban commercial street with a narrow single lane paved in blocks runs ahead with bollards and curbs but no center divider; traffic is light and slow. A pedestrian in a white shirt and black pants crosses directly in front of the ego vehicle from left to right, occupying the path and forcing a brief wait. A white van is ahead in the same lane, moving slowly away along the center of the lane and constraining the ego vehicle's pace once the crossing clears. A convex safety mirror on the right corner overlooks the junction, and storefronts line both sides with no signals visible.", "hazard_reasoning": "There is a pedestrian in white shirt and black pants, crossing the street in front of the ego car, to the left side. The pedestrian is stepping into the vehicle's path, so the driver must yield to avoid a collision."}
{"id": "train_01544", "split": "train", "clip_key": "2020-0226-140503_102840_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "102840"}, "frames": ["2020-0226-140503_102840_movie_t-3.jpg", "2020-0226-140503_102840_movie_t-2.jpg", "2020-0226-140503_102840_movie_t-1.jpg", "2020-0226-140503_102840_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street has a single lane in the ego direction, divided from oncoming lanes by a low hedge median with railing; the pavement appears smooth and dry and traffic is light to moderate. A white box truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. Several cars travel steadily in the opposite direction to the right beyond the median, remaining separated from the ego path. A pedestrian stands near the left sidewalk by storefronts and continues along the curb without approaching the lane. An overhead blue guide sign spans the roadway ahead.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. Slow down to maintain a safe following distance and avoid collision if the truck brakes suddenly."}
{"id": "train_01545", "split": "train", "clip_key": "2020-0205-103411_064103_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "064103"}, "frames": ["2020-0205-103411_064103_movie_t-3.jpg", "2020-0205-103411_064103_movie_t-2.jpg", "2020-0205-103411_064103_movie_t-1.jpg", "2020-0205-103411_064103_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs between tall buildings with a planted median separating directions; the pavement is smooth and traffic is moderate, compressing near an intersection. A gray sedan directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. In the right adjacent lane, a covered cargo truck queues and creeps forward toward the stop line. Farther right, a small white kei car moves slowly past the truck as it lines up for the intersection. Overhead traffic signals facing the approach display red.", "hazard_reasoning": "There is a gray Sedan stopped in front of the ego car because of a red traffic light. Drivers should stop to avoid colliding with the halted vehicle at the red light."}
{"id": "train_01546", "split": "train", "clip_key": "titan_clip_853_000504_movie", "source": {"subset": "titan", "scenario": "clip_853", "frame": "000504"}, "frames": ["titan_clip_853_000504_movie_t-3.jpg", "titan_clip_853_000504_movie_t-2.jpg", "titan_clip_853_000504_movie_t-1.jpg", "titan_clip_853_000504_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrian crossing ahead", "environment_perception": "An urban commercial alley with a single narrow lane and bollards on both sides has smooth block-paved surface and light vehicle flow, while pedestrian activity is moderate. A pedestrian in a blue shirt and brown pants steps into the marked crossing ahead from the left and walks to the right across the ego path, likely momentarily constraining progress. Two pedestrians wait at the right edge by the convenience store, glancing toward the lane and potentially entering it. A white van travels across the far junction from left to right on the cross street without affecting the lane. Bicycles are parked along the right curb near a tree, slightly narrowing the passage.", "hazard_reasoning": "The pedestrian in a blue shirt and brown pants is crossing the street from the left side to the right side of the road because of the crosswalk. The driver must stop to yield to the pedestrian and prevent a collision."}
{"id": "train_01547", "split": "train", "clip_key": "titan_clip_561_000282_movie", "source": {"subset": "titan", "scenario": "clip_561", "frame": "000282"}, "frames": ["titan_clip_561_000282_movie_t-3.jpg", "titan_clip_561_000282_movie_t-2.jpg", "titan_clip_561_000282_movie_t-1.jpg", "titan_clip_561_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban residential lane with no center divider and smooth pavement is shown, and traffic is light as the ego-car moves slowly through the alley. On the left ahead, a pedestrian wearing a blue dress and carrying a backpack walks away from the ego-vehicle along the edge of the road. Farther ahead near the center-right, a small group of pedestrians walks toward the camera within the lane, occupying space the car will use and moderating its pace. On the right, a black van is parked at the curb, slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a blue dress, carrying a backpack, and walking, on left side of the road, away from the ego-car. The pedestrian may unexpectedly step into the driving lane, requiring the driver to manoeuvre around them to avoid a collision."}
{"id": "train_01548", "split": "train", "clip_key": "titan_clip_758_000084_movie", "source": {"subset": "titan", "scenario": "clip_758", "frame": "000084"}, "frames": ["titan_clip_758_000084_movie_t-3.jpg", "titan_clip_758_000084_movie_t-2.jpg", "titan_clip_758_000084_movie_t-1.jpg", "titan_clip_758_000084_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "An urban street runs between tall buildings with a single narrow lane and a wide zebra crosswalk; the pavement is dry with visible cracks, and traffic is very light with no vehicles immediately ahead. A red traffic cone sits on the left edge of the ego lane just ahead, while more cones and orange mesh fencing line the right shoulder for a work zone that narrows the usable lane. A pedestrian on the left by the crosswalk walks along the sidewalk parallel to the road and does not enter the lane. A few pedestrians farther ahead remain behind the barriers near the construction area.", "hazard_reasoning": "There is a red traffic cone on the left side of the ego lane, in front of the ego car. The cone presents an obstruction in the driving path, so the driver should manoeuvre carefully around it to avoid a collision."}
{"id": "train_01549", "split": "train", "clip_key": "2020-0228-150133_061056_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "061056"}, "frames": ["2020-0228-150133_061056_movie_t-3.jpg", "2020-0228-150133_061056_movie_t-2.jpg", "2020-0228-150133_061056_movie_t-1.jpg", "2020-0228-150133_061056_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with stopped vehicle.", "environment_perception": "An urban arterial with two lanes in each direction and dry, well-kept pavement shows heavy, stop-and-go flow for the ego direction, while oncoming traffic to the right is lighter. A gray sedan is stopped directly ahead in the ego lane because of congestion, holding the ego car. In the adjacent left lane, a white truck and several cars wait or creep forward alongside, limiting any lane change. In the opposite lanes to the right, a box truck and other vehicles pass steadily without interacting. A blue pedestrian footbridge spans the road, and a distant intersection with traffic signals is visible ahead.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the stopped vehicle."}
{"id": "train_01550", "split": "train", "clip_key": "2020-0226-101332_042078_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "042078"}, "frames": ["2020-0226-101332_042078_movie_t-3.jpg", "2020-0226-101332_042078_movie_t-2.jpg", "2020-0226-101332_042078_movie_t-1.jpg", "2020-0226-101332_042078_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs beneath an elevated roadway, with three same-direction lanes and a metal fence separating oncoming traffic; the pavement is smooth and traffic is moderate, queuing at a signalized intersection. A white van directly ahead in the ego lane is stopped as the signal ahead is red, constraining the ego vehicle's pace. To the left, a white car in the adjacent lane slows and queues slightly ahead while staying in lane. In the rightmost lane, a dark sedan ahead moves slowly toward a right turn at the junction without encroaching on the ego lane. Overhead gantry signs and traffic lights govern the intersection.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver needs to stop to prevent a collision with the halted van and comply with the traffic signal."}
{"id": "train_01551", "split": "train", "clip_key": "2020-0217-110854_065768_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "065768"}, "frames": ["2020-0217-110854_065768_movie_t-3.jpg", "2020-0217-110854_065768_movie_t-2.jpg", "2020-0217-110854_065768_movie_t-1.jpg", "2020-0217-110854_065768_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to maintain safe distance", "environment_perception": "An urban tree-lined divided boulevard with two lanes in the ego direction has dry, well-kept pavement and heavy, mostly stopped traffic. A gray hatchback directly ahead in the ego lane is stopped because congestion holds the queue, keeping the ego vehicle halted. In the adjacent left lane, a tarp-covered medium truck slightly ahead also waits, constraining the pace beside the ego car. Farther ahead in the same lane, a small white flatbed truck pauses in line, adding to the backup. Pedestrians remain on the right sidewalk and do not approach the roadway.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car, because of traffic congestion ahead. The ego-vehicle needs to stop promptly to maintain a safe following distance and avoid a potential collision."}
{"id": "train_01552", "split": "train", "clip_key": "2020-0203-114632_022617_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "022617"}, "frames": ["2020-0203-114632_022617_movie_t-3.jpg", "2020-0203-114632_022617_movie_t-2.jpg", "2020-0203-114632_022617_movie_t-1.jpg", "2020-0203-114632_022617_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth dry pavement and a hatched divider on the right is shown, and overall flow is light though the ego lane is momentarily stopped. A white truck is stopped directly ahead in the ego lane, blocking the path and constraining the ego car's movement. A pedestrian stands on the left sidewalk beside a guardrail, waiting and not entering the roadway. To the right, several vehicles are parked off the roadway by a building and do not interact with traffic. No traffic signals are visible, and there are no other notable hazards in view.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane. The stopped truck blocks the lane ahead and obscures potential hazards, so the driver should stop to avoid collisions or hidden obstacles."}
{"id": "train_01553", "split": "train", "clip_key": "2020-0225-145150_007010_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "007010"}, "frames": ["2020-0225-145150_007010_movie_t-3.jpg", "2020-0225-145150_007010_movie_t-2.jpg", "2020-0225-145150_007010_movie_t-1.jpg", "2020-0225-145150_007010_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of the hatchback changing lanes ahead.", "environment_perception": "An urban multi-lane two-way arterial with three lanes in the ego's direction, no physical median, and smooth dry pavement carries moderate traffic toward a signalized intersection. Ahead, a white hatchback in the ego lane moves left into the adjacent left lane directly in front of the ego car, completing the lane change and taking the space ahead. To the right, a small white flatbed truck continues straight in the adjacent right lane at a similar pace, running parallel and slightly ahead. Farther ahead across the junction, same-direction cars proceed steadily while oncoming traffic flows in the opposite lanes. A 50 speed-limit sign is posted overhead, and a white van is parked along the left curb.", "hazard_reasoning": "There is a white hatchback changing lanes from the ego lane, to the left lane, in front of the ego car. This lane change could reduce the safe following gap and bring the vehicle into the ego path unexpectedly, so the driver should be aware of it."}
{"id": "train_01554", "split": "train", "clip_key": "2020-0213-143552_024227_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "024227"}, "frames": ["2020-0213-143552_024227_movie_t-3.jpg", "2020-0213-143552_024227_movie_t-2.jpg", "2020-0213-143552_024227_movie_t-1.jpg", "2020-0213-143552_024227_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the scooter to avoid collision.", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection with no median and smooth pavement; overall flow is moderate, with the ego direction queued while cross-traffic moves. A black scooter is stopped directly ahead in the ego lane at the stop line because the overhead signal facing our approach is red, holding the ego vehicle. Across the junction, several vehicles, including a silver hatchback and a white truck, traverse from right and left across the ego path while their signal is green. Numerous pedestrians wait at the corners beside the zebra crossings on both sides.", "hazard_reasoning": "There is a black scooter stopped in front of the ego car in the ego lane, because of a red traffic light ahead. Driver should stop behind the scooter to avoid collision."}
{"id": "train_01555", "split": "train", "clip_key": "2020-0206-142535_003053_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "003053"}, "frames": ["2020-0206-142535_003053_movie_t-3.jpg", "2020-0206-142535_003053_movie_t-2.jpg", "2020-0206-142535_003053_movie_t-1.jpg", "2020-0206-142535_003053_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for crossing pedestrian.", "environment_perception": "An urban signalized intersection on a one-lane-each-way road has smooth pavement and no median; traffic is light and the ego vehicle waits at the approach. Ahead in the crosswalk, a pedestrian dressed in black and carrying a handbag crosses from right to left, moving steadily through the ego lane under the red light and holding the vehicle. On the left sidewalk, several pedestrians stand near the curb with one beginning to cross farther left but not entering the ego path. The overhead traffic signal for vehicles shows red.", "hazard_reasoning": "A pedestrian wearing all black and a handbag is crossing at the pedestrian crosswalk to the left side of the road, because of the red light. The driver should stop to avoid hitting the pedestrian who has the right of way at the crosswalk."}
{"id": "train_01556", "split": "train", "clip_key": "titan_clip_948_000366_movie", "source": {"subset": "titan", "scenario": "clip_948", "frame": "000366"}, "frames": ["titan_clip_948_000366_movie_t-3.jpg", "titan_clip_948_000366_movie_t-2.jpg", "titan_clip_948_000366_movie_t-1.jpg", "titan_clip_948_000366_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist ahead", "environment_perception": "An urban two-way street leads to a level railway crossing with green-painted panels; the single carriageway is smooth and traffic is light. A cyclist in a white shirt rides ahead in the middle of the road moving away from the ego car, effectively setting the pace as they continue over the tracks. Another cyclist comes from the right near the crossing and proceeds straight ahead across the rails, briefly occupying the ego vehicle's path. A pedestrian further ahead crosses the tracks and continues along the center of the approach, remaining in the lane the car would take. The railway crossing equipment is visible with gates raised and signal lights inactive. A black-and-yellow barricade sits on the near-right shoulder beside the rails.", "hazard_reasoning": "There is a cyclist wearing a white shirt and cycling in the middle of the road, away from the ego car. The cyclist's position may require you to adjust your speed or steering to maintain a safe distance and avoid a collision."}
{"id": "train_01557", "split": "train", "clip_key": "titan_clip_1206_000570_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1206_000570_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1206_000570_movie_t-3_augB1.jpg", "titan_clip_1206_000570_movie_t-2_augB1.jpg", "titan_clip_1206_000570_movie_t-1_augB1.jpg", "titan_clip_1206_000570_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around him", "environment_perception": "An urban street with a single left-hand lane continues ahead, separated by bollards from a broader roadway on the right; the pavement is worn but passable, and overall traffic is light. At the left curb ahead in the ego lane, a white van is stopped while a man wearing a cap and blue shirt stands beside its open door unloading, partially occupying the lane and narrowing the path. On the separated roadway to the right, a few cars and buses travel steadily, not merging into the ego lane. Pedestrians wait and walk along the right-side sidewalk near a bus stop, staying clear of the carriageway. A no-entry sign marks a short lane on the right near the median.", "hazard_reasoning": "There is a tall man wearing a cap and a blue shirt, standing next to a van on the left side of the road, in the ego lane, because he is unloading the van. He is blocking the lane and may step into the vehicle's path, so the driver should carefully manoeuvre around him."}
{"id": "train_01558", "split": "train", "clip_key": "titan_clip_844_000402_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_844_000402_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_844_000402_movie_t-3_augB1.jpg", "titan_clip_844_000402_movie_t-2_augB1.jpg", "titan_clip_844_000402_movie_t-1_augB1.jpg", "titan_clip_844_000402_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A quiet urban residential street climbs uphill on a narrow two-way road with no centerline, bordered by walls and a white guardrail; the pavement is smooth and traffic is light with no vehicles visible. On the near right edge, a pedestrian walks toward the camera with a small dog on a leash along the curb, close to the travel lane and relevant to the ego's path. Far ahead in the lane center, a pedestrian in blue holds an animal and walks toward the right side of the road as they pick it up, briefly occupying the path. No notable signals or posted speeds are visible, and sight lines tighten near the hill crest.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and blue pants, holding an animal, walking in the middle of the road, toward the right side of the road, because they are picking up the animal. The pedestrian's unpredictable movements in the travel lane could lead to sudden obstruction, so the driver must manoeuvre carefully to avoid collision."}
{"id": "train_01559", "split": "train", "clip_key": "titan_clip_747_000030_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_747_000030_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_747_000030_movie_t-3_augB1.jpg", "titan_clip_747_000030_movie_t-2_augB1.jpg", "titan_clip_747_000030_movie_t-1_augB1.jpg", "titan_clip_747_000030_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "The camera travels along a narrow urban two-way street without a center divider, the asphalt patched but clear, and motor traffic is light with no oncoming vehicles visible. Ahead in the middle of the road, a pedestrian in a white shirt carrying a backpack walks away from the ego-car, occupying the travel path and setting the pace. Slightly farther ahead another person walks along the lane near the centerline, continuing in the same direction and keeping to the ego vehicle's path. At the right edge by a storefront, a woman stands close to the roadway while using her phone, positioned where she may step into the lane. Orange cones and clusters of parked bicycles line the curbs, narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, and walking, in the middle of the road, away from the ego-car. The driver should manoeuvre carefully around the pedestrian to maintain safe clearance."}
{"id": "train_01560", "split": "train", "clip_key": "2020-0127-132751_065984_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "065984"}, "frames": ["2020-0127-132751_065984_movie_t-3.jpg", "2020-0127-132751_065984_movie_t-2.jpg", "2020-0127-132751_065984_movie_t-1.jpg", "2020-0127-132751_065984_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped truck.", "environment_perception": "An urban two-lane road with dashed lane markings and a right-side guardrail has dry, well-kept pavement; traffic is moderate but slows in the ego lane. A white box truck is stopped ahead in the ego lane for unloading, blocking the path and making the ego vehicle wait. To the right, several vans and cars continue forward in the adjacent lane, overtaking the blockage and limiting gaps for a lane change. A motorcycle travels ahead near the right guardrail in the same direction, filtering past slower vehicles while staying out of the ego lane. An overhead circular sign shows 50.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because it is being unloaded. The driver should carefully manoeuvre around the stopped truck to avoid collision and maintain smooth traffic flow."}
{"id": "train_01561", "split": "train", "clip_key": "titan_clip_574_000354_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_574_000354_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_574_000354_movie_t-3_augB1.jpg", "titan_clip_574_000354_movie_t-2_augB1.jpg", "titan_clip_574_000354_movie_t-1_augB1.jpg", "titan_clip_574_000354_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban two-way street climbs gently with one narrow lane per direction, no median, and mostly smooth pavement; traffic is light. Ahead in the ego lane near the left curb a white box truck is stopped for loading, partially blocking the lane and setting the pace. Beside its rear, a pedestrian wearing a cap and brown overalls stands in the middle of the road while attending the parked vehicle on the left, occupying the ego path. In the opposing lane a white car approaches downhill, limiting room to pass. A red painted shoulder and guardrail run along the right.", "hazard_reasoning": "There is a pedestrian wearing a cap and brown overalls, standing in the middle of the road, because they are attending a parked vehicle on the left. The driver must carefully manoeuvre around the pedestrian to avoid a potential collision."}
{"id": "train_01562", "split": "train", "clip_key": "2020-0207-101955_024071_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_024071_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_024071_movie_t-3_augB1.jpg", "2020-0207-101955_024071_movie_t-2_augB1.jpg", "2020-0207-101955_024071_movie_t-1_augB1.jpg", "2020-0207-101955_024071_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs between tall buildings with no median visible, the pavement is sound, and traffic is heavy and slow-moving. A green canvas-covered truck directly ahead in the ego lane slows because congestion builds ahead, setting the ego car's pace. To the right, a silver sedan in the adjacent lane edges forward alongside, leaving little room for a lane change. Farther right, a large green truck in the next lane also crawls ahead, adding to the queue of same-direction vehicles. An overhead pedestrian bridge spans the road with circular prohibition signs mounted on it.", "hazard_reasoning": "There is a green truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to slower-moving traffic."}
{"id": "train_01563", "split": "train", "clip_key": "2020-0220-151845_044394_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "044394"}, "frames": ["2020-0220-151845_044394_movie_t-3.jpg", "2020-0220-151845_044394_movie_t-2.jpg", "2020-0220-151845_044394_movie_t-1.jpg", "2020-0220-151845_044394_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial runs under an elevated expressway, with three same-direction lanes and a metal median fence separating oncoming traffic; the pavement appears smooth and traffic is moderate. Ahead in the ego lane, a yellow-and-red flatbed truck with a covered load slows and gradually pulls away from the ego car, affecting its pace. In the left lane slightly ahead, a white van maintains a steady speed alongside without drifting toward the ego lane. To the right, a motorcycle a little ahead travels close to the median fence and continues forward, briefly edging past the truck while staying in its lane. Blue overhead signs give directions toward Hachioji and Chuo.", "hazard_reasoning": "There is a yellow and red truck slowing in front of the ego car, in the ego lane, moving away from the ego car. The truck's reduced speed could require sudden adjustments, so the driver should maintain a safe following distance under this situation."}
{"id": "train_01564", "split": "train", "clip_key": "2020-0220-102630_014651_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "014651"}, "frames": ["2020-0220-102630_014651_movie_t-3.jpg", "2020-0220-102630_014651_movie_t-2.jpg", "2020-0220-102630_014651_movie_t-1.jpg", "2020-0220-102630_014651_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road curves gently right between mid-rise buildings, with smooth asphalt and no visible median. Traffic is heavy and slow, queuing toward an intersection ahead. A white sedan immediately ahead in the ego lane is stopped because congestion blocks the intersection, holding the ego vehicle. Farther ahead in the adjacent lane, a tall box truck is also stopped in the queue, contributing to the blockage. On the right, a small flatbed truck alongside creeps forward in the neighboring lane, staying close to the ego vehicle and limiting lateral space. A 30 speed-limit sign stands on the left roadside.", "hazard_reasoning": "There is a white sedan stopped in the ego lane because of the traffic congestion ahead in the intersection. The driver should stop now to maintain a safe distance and prevent colliding with the stationary vehicles ahead."}
{"id": "train_01565", "split": "train", "clip_key": "titan_clip_1089_000084_movie", "source": {"subset": "titan", "scenario": "clip_1089", "frame": "000084"}, "frames": ["titan_clip_1089_000084_movie_t-3.jpg", "titan_clip_1089_000084_movie_t-2.jpg", "titan_clip_1089_000084_movie_t-1.jpg", "titan_clip_1089_000084_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the parked vehicle.", "environment_perception": "An urban two-lane road with a side street to the left has no median and slightly worn asphalt as the ego vehicle approaches a zebra crossing; traffic is light with no movement in the ego lane. On the left side street near the corner, a small box truck is stopped at the curb, remaining clear of the ego lane. Farther along the same curb, a white van parked on the left side of the road, away from the ego car, stays stationary and does not affect the path. On the left sidewalk beside these vehicles, a pedestrian waits without stepping toward the crosswalk.", "hazard_reasoning": "There is a white hatchback parked on the left side of the road, away from the ego car. The parked vehicle may re-enter traffic unexpectedly or obstruct visibility, requiring the driver to stay alert."}
{"id": "train_01566", "split": "train", "clip_key": "titan_clip_1127_000222_movie", "source": {"subset": "titan", "scenario": "clip_1127", "frame": "000222"}, "frames": ["titan_clip_1127_000222_movie_t-3.jpg", "titan_clip_1127_000222_movie_t-2.jpg", "titan_clip_1127_000222_movie_t-1.jpg", "titan_clip_1127_000222_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead.", "environment_perception": "A narrow urban residential street with no centerline runs between a brick apartment block and a tree-lined canal; the pavement is smooth and traffic is light with no vehicles visible. On the right edge near the ego vehicle, a pedestrian walks away from the camera along the shoulder, close to the travel lane and potentially entering the ego path. Farther ahead in the same lane, two pedestrians walk away near the center-left, occupying the corridor the car would take and narrowing the passage.", "hazard_reasoning": "There is a pedestrian walking away from the ego car, on the right side of the road. The pedestrian may unexpectedly step into the driving lane, so the driver should remain cautious and be prepared to slow down."}
{"id": "train_01567", "split": "train", "clip_key": "2020-0214-145407_038587_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "038587"}, "frames": ["2020-0214-145407_038587_movie_t-3.jpg", "2020-0214-145407_038587_movie_t-2.jpg", "2020-0214-145407_038587_movie_t-1.jpg", "2020-0214-145407_038587_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane same-direction road runs under an elevated structure, bordered by left-edge bollards and a right-side guardrail; the dry pavement curves gently right and overall traffic is light. A white box truck directly ahead in the ego lane accelerates along the curve, opening a gap as it briefly sets the pace. A black sedan in the adjacent right lane travels slightly ahead to the right, maintaining its lane and limiting an immediate right-lane change. An overhead directional sign is visible on the structure ahead, and no unusual obstacles or work zones appear.", "hazard_reasoning": "There is a white truck accelerating in the ego lane. Since the truck is changing its speed ahead, the driver should maintain a safe following distance and be prepared to adapt to its acceleration."}
{"id": "train_01568", "split": "train", "clip_key": "2020-0131-135401_007277_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "007277"}, "frames": ["2020-0131-135401_007277_movie_t-3.jpg", "2020-0131-135401_007277_movie_t-2.jpg", "2020-0131-135401_007277_movie_t-1.jpg", "2020-0131-135401_007277_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban street with no visible median and dry pavement shows light traffic overall, but progress is constrained. A white box truck is stopped directly ahead in the ego lane, holding the ego vehicle in place. On the left near the truck, several pedestrians stand and walk along the curb and could step around the truck into the lane. Multiple small vans are parked along the left curb, narrowing the roadway. No salient signals or speed signs are visible, and bright sun glare enters from the right front.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The stopped truck blocks the lane ahead, requiring the driver to stop promptly to avoid a collision."}
{"id": "train_01569", "split": "train", "clip_key": "titan_clip_684_000282_movie", "source": {"subset": "titan", "scenario": "clip_684", "frame": "000282"}, "frames": ["titan_clip_684_000282_movie_t-3.jpg", "titan_clip_684_000282_movie_t-2.jpg", "titan_clip_684_000282_movie_t-1.jpg", "titan_clip_684_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with a single narrow undivided lane and smooth asphalt passes between shopfronts; vehicle traffic is very light and motion remains slow. On the right side close to the ego vehicle, a pedestrian wearing a pink shirt, white skirt, and carrying a handbag stands at the curb and may step into the lane. Farther ahead near the center, a pedestrian walks away in the lane drifting slightly left, occupying the travel path and constraining speed. On the left side by the sidewalk, another person edges off the curb toward the roadway and could merge into the lane. Ahead, small cones and signboards along the right edge lightly narrow the usable space.", "hazard_reasoning": "There is a pedestrian wearing a pink shirt, white skirt, and carrying a hangbag, standing on the right side of the road. This pedestrian may step into the lane unexpectedly, so you should carefully manoeuvre around them."}
{"id": "train_01570", "split": "train", "clip_key": "2020-0218-103119_053782_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "053782"}, "frames": ["2020-0218-103119_053782_movie_t-3.jpg", "2020-0218-103119_053782_movie_t-2.jpg", "2020-0218-103119_053782_movie_t-1.jpg", "2020-0218-103119_053782_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene under an elevated roadway, the ego car travels on a two-lane same-direction road with a right-side guardrail separating a narrow side lane; the pavement is dry and traffic is heavy and slow. A gray box truck directly ahead in the ego lane slows due to congestion and sets the pace. To the left, a red SUV runs alongside at low speed in the adjacent same-direction lane, limiting room to pass. Farther ahead in that left lane, a small red car queues slowly behind other traffic.", "hazard_reasoning": "There is a gray truck slowing down in the ego lane due to traffic congestion, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid collision as the vehicle ahead decelerates unexpectedly in dense traffic."}
{"id": "train_01571", "split": "train", "clip_key": "2020-0131-135401_000958_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "000958"}, "frames": ["2020-0131-135401_000958_movie_t-3.jpg", "2020-0131-135401_000958_movie_t-2.jpg", "2020-0131-135401_000958_movie_t-1.jpg", "2020-0131-135401_000958_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one lane each direction runs between midrise buildings, the pavement smooth and traffic light. Directly ahead in the ego lane, a white box truck is stopped and blocks the lane, holding the ego vehicle behind. Along the left curb just ahead, a cyclist proceeds slowly in the marked bicycle lane, continuing straight alongside the truck without entering the ego path. Two pedestrians walk on the left sidewalk near the truck and keep to the curb, posing no immediate interaction.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The truck's stopped position poses a collision risk, so the driver should stop immediately to maintain a safe distance."}
{"id": "train_01572", "split": "train", "clip_key": "2020-0218-103119_016564_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "016564"}, "frames": ["2020-0218-103119_016564_movie_t-3.jpg", "2020-0218-103119_016564_movie_t-2.jpg", "2020-0218-103119_016564_movie_t-1.jpg", "2020-0218-103119_016564_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid colliding with the stopped minivan.", "environment_perception": "An urban multi-lane arterial with a central barrier separates opposing flows; the asphalt is dry and smooth, and traffic is moderate with a queue at a signalized intersection. A white minivan directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. To its left, a large box truck in the adjacent same-direction lane is also stopped a little ahead, limiting forward view and progress. Along the curb to the far left, a white car waits in its lane slightly behind the truck. The overhead traffic signal for our approach shows red.", "hazard_reasoning": "There is a white minivan stopped in the ego lane, because of the red traffic light. Drivers need to stop to avoid a collision with the stationary vehicle and comply with the red signal."}
{"id": "train_01573", "split": "train", "clip_key": "2020-0205-103411_055513_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "055513"}, "frames": ["2020-0205-103411_055513_movie_t-3.jpg", "2020-0205-103411_055513_movie_t-2.jpg", "2020-0205-103411_055513_movie_t-1.jpg", "2020-0205-103411_055513_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes and a guardrailed median on the right is seen, the pavement smooth and traffic light to moderate as vehicles queue at an intersection. Ahead in the ego lane, a black van is stopped at a red light, holding the lane and constraining the ego car's pace. In the left adjacent lane, a dark wagon waits slightly ahead, remaining stationary in parallel with no apparent turn. Across the intersection, several cars travel left to right as cross traffic, continuing through the green and not entering the ego path. Overhead signals for the ego direction show red.", "hazard_reasoning": "There is a black van stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid running the red light and colliding with the halted vehicle ahead under this condition."}
{"id": "train_01574", "split": "train", "clip_key": "titan_clip_444_000246_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_444_000246_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_444_000246_movie_t-3_augB1.jpg", "titan_clip_444_000246_movie_t-2_augB1.jpg", "titan_clip_444_000246_movie_t-1_augB1.jpg", "titan_clip_444_000246_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban alley with a single shared lane and interlocking paver surface runs between shops, with wet patches and orange cones; traffic is light and the lane is partly constricted by roadside work on the right. A small construction truck is parked along the right curb ahead and protrudes into the lane, narrowing the passage. Next to it, a man in black trousers and a black shirt wearing a helmet stands in the ego lane spraying the truck with a hose, which blocks part of the lane and constrains the approach. Several pedestrians are present ahead; one woman crosses from right to left near the truck and may enter the ego path while others walk away along the centerline.", "hazard_reasoning": "There is a man wearing black trousers, a black shirt, and a helmet, standing in the ego lane because he spraying a truck with a hose. The driver should manoeuvre carefully around the pedestrian to avoid a collision and maintain safe clearance."}
{"id": "train_01575", "split": "train", "clip_key": "titan_clip_1100_000324_movie", "source": {"subset": "titan", "scenario": "clip_1100", "frame": "000324"}, "frames": ["titan_clip_1100_000324_movie_t-3.jpg", "titan_clip_1100_000324_movie_t-2.jpg", "titan_clip_1100_000324_movie_t-1.jpg", "titan_clip_1100_000324_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban shopping street with a brick-tiled surface functions as a shared roadway without lane markings or a divider, and pedestrian flow is light. On the left, a pedestrian wearing a striped shirt stands by the storefront beside orange cones at the roadway edge, close to the ego path. Near the right edge, a man in a light blue shirt walks toward the camera along the curbside, slightly encroaching into the travel line. Farther ahead in the center, a small group of pedestrians walks away along the middle of the corridor, constraining the pace. Sandwich boards and shop signs protrude from both sides, narrowing clearance.", "hazard_reasoning": "A pedestrian wearing a striped shirt is standing on the left side of the road. The driver should be aware of the pedestrian's position because they may step onto the roadway in front of the vehicle."}
{"id": "train_01576", "split": "train", "clip_key": "2020-0227-104226_054580_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054580"}, "frames": ["2020-0227-104226_054580_movie_t-3.jpg", "2020-0227-104226_054580_movie_t-2.jpg", "2020-0227-104226_054580_movie_t-1.jpg", "2020-0227-104226_054580_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the approaching sedan", "environment_perception": "An urban two-way street with one lane each direction and a yellow center line has smooth pavement and moderate, steady flow as the ego vehicle approaches a signalized intersection. A silver hatchback ahead in the ego lane proceeds straight through with a short gap, setting the pace. On the right front, an oncoming black microvan travels through the junction in its lane, passing close to the center line without encroaching. In the middle of the intersection, a blue sedan drives toward the ego car in the right oncoming lane, continuing straight and narrowing lateral clearance. Pedestrian signals on both sides display the walk symbol.", "hazard_reasoning": "A blue sedan in the middle of the intersection is driving toward the ego car, in the right lane. The sedan may cut into the ego-vehicle's path, risking a collision if no action is taken, so the driver should yield to avoid crash."}
{"id": "train_01577", "split": "train", "clip_key": "2020-0203-114632_083383_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "083383"}, "frames": ["2020-0203-114632_083383_movie_t-3.jpg", "2020-0203-114632_083383_movie_t-2.jpg", "2020-0203-114632_083383_movie_t-1.jpg", "2020-0203-114632_083383_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban road runs under an elevated expressway, with two lanes in the ego direction including a left-turn pocket; the pavement looks smooth and overall traffic is light. A silver hatchback directly ahead in the ego lane is stopped and waiting, holding the ego vehicle because the light is red. The traffic signal facing the ego shows a red aspect at the intersection.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid a rear-end collision and comply with the traffic signal."}
{"id": "train_01578", "split": "train", "clip_key": "2020-0228-150133_076332_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "076332"}, "frames": ["2020-0228-150133_076332_movie_t-3.jpg", "2020-0228-150133_076332_movie_t-2.jpg", "2020-0228-150133_076332_movie_t-1.jpg", "2020-0228-150133_076332_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane road with smooth asphalt carries moderate traffic as the ego car proceeds in the leftmost lane without a physical median. Ahead in the same lane a silver hatchback is stopped, holding the ego car, because of a flashing traffic light at the intersection ahead. To the right, a large box truck in the adjacent lane moves slowly forward along the chevron-marked area, overtaking the stopped queue while remaining in its lane. Farther ahead, additional cars queue toward the junction in both lanes. On the left sidewalk a cyclist rides in the same direction near the curb, staying off the roadway. A roadside round sign indicates no parking along this stretch.", "hazard_reasoning": "There is a silver hatchback stopped in the left lane, in front of the ego-car, because of the flashing traffic light ahead in the intersection. Following the vehicle ahead at a safe distance will help you respond smoothly to the stopped car and flashing signal."}
{"id": "train_01579", "split": "train", "clip_key": "2020-0226-140503_049142_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "049142"}, "frames": ["2020-0226-140503_049142_movie_t-3.jpg", "2020-0226-140503_049142_movie_t-2.jpg", "2020-0226-140503_049142_movie_t-1.jpg", "2020-0226-140503_049142_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multi-lane arterial with smooth red pavement carries heavy stop-and-go traffic toward a signalized intersection. A black sedan is directly ahead in the ego lane and remains stopped in a queue because of congestion, constraining the ego vehicle. To the right, a white SUV slightly ahead in the adjacent lane creeps and then halts with the line, staying in its lane. To the left, a red taxi ahead in the left lane waits in the same queue. The overhead traffic signal shows red, and vehicles across all lanes are stacked up under it.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain a safe distance and avoid colliding with the halted vehicle ahead."}
{"id": "train_01580", "split": "train", "clip_key": "2020-0217-110854_012290_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "012290"}, "frames": ["2020-0217-110854_012290_movie_t-3.jpg", "2020-0217-110854_012290_movie_t-2.jpg", "2020-0217-110854_012290_movie_t-1.jpg", "2020-0217-110854_012290_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three lanes in the ego direction and no median runs past buildings under overcast skies; the pavement is smooth and traffic is light. A white van travels ahead in the ego lane at a steady pace through the green signal, guiding the ego vehicle's speed. To the right, a covered light truck and several cars stand or crawl in the curbside lane, forming a short queue that stays out of the ego lane. Farther ahead in the left lane, another car proceeds gradually, parallel to the ego's path without encroaching. The signalised intersection ahead shows green, and wide zebra crossings span the road.", "hazard_reasoning": "There is a white van driving in front of the ego car, in the ego lane, because of the green traffic light. Following the vehicle ahead helps maintain a safe distance and anticipate any signal changes."}
{"id": "train_01581", "split": "train", "clip_key": "titan_clip_659_000366_movie", "source": {"subset": "titan", "scenario": "clip_659", "frame": "000366"}, "frames": ["titan_clip_659_000366_movie_t-3.jpg", "titan_clip_659_000366_movie_t-2.jpg", "titan_clip_659_000366_movie_t-1.jpg", "titan_clip_659_000366_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the stopped truck ahead", "environment_perception": "A narrow urban two-way street with a single lane each direction has smooth pavement and light traffic, with buildings close on both sides and no median. Ahead in the ego lane, a black box truck is stopped for unloading, occupying the left lane and constraining the ego vehicle's pace. Just before it, a small white three-wheeled delivery scooter is parked partly in the lane along the left curb, narrowing the passage. Farther ahead on the same side another dark truck also remains stationary, while the opposite lane shows no oncoming vehicles. Orange cones and storefront signs sit at the right edge but stay outside the travelway.", "hazard_reasoning": "A black truck is stopped in the left lane because it is being unloaded. The stopped truck blocks the lane and may cause an unexpected obstruction ahead, so the driver should be cautious in this situation."}
{"id": "train_01582", "split": "train", "clip_key": "2020-0227-104226_027027_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "027027"}, "frames": ["2020-0227-104226_027027_movie_t-3.jpg", "2020-0227-104226_027027_movie_t-2.jpg", "2020-0227-104226_027027_movie_t-1.jpg", "2020-0227-104226_027027_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene is an urban two-way road with a single lane each direction, divided by a solid centerline and flanked by guardrails; the pavement is dry and smooth and traffic is moderate with a slow patch ahead. A white box truck travels ahead in the ego lane and slows because congestion forms farther ahead, constraining the ego car's pace. An oncoming black sedan approaches in the opposite lane to the right and passes steadily without encroaching. Farther ahead, a short line of same-direction vehicles, mostly trucks, creeps along and causes the bottleneck.", "hazard_reasoning": "There is a white truck slowing down ahead of the ego-car, in the ego lane, because of traffic congestion ahead. Because the white truck is decelerating due to congestion, the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_01583", "split": "train", "clip_key": "titan_clip_11_000282_movie", "source": {"subset": "titan", "scenario": "clip_11", "frame": "000282"}, "frames": ["titan_clip_11_000282_movie_t-3.jpg", "titan_clip_11_000282_movie_t-2.jpg", "titan_clip_11_000282_movie_t-1.jpg", "titan_clip_11_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with a single travel lane runs between tall buildings on brick-paved roadway, and traffic is light as the ego vehicle proceeds straight. Parked vehicles along the right curb, including a black van, narrow the usable lane. On the left near the curb, a pedestrian in a white shirt walks toward the camera along the edge, close to the ego lane and potentially entering it. On the right side beside a parked vehicle, a pedestrian wearing a black T-shirt and brown pants stands by the roadway, potentially stepping into the ego path. Far ahead in the lane, a person with a small cart moves slowly away near the center, modestly constraining the pace.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and brown pants, standing on the right side of the road, because of their parked vehicle. The driver should carefully manoeuvre to maintain a safe distance and avoid startling the pedestrian."}
{"id": "train_01584", "split": "train", "clip_key": "2020-0210-101957_029286_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "029286"}, "frames": ["2020-0210-101957_029286_movie_t-3.jpg", "2020-0210-101957_029286_movie_t-2.jpg", "2020-0210-101957_029286_movie_t-1.jpg", "2020-0210-101957_029286_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the stopped taxi.", "environment_perception": "An urban two-way road with one lane in each direction runs under an elevated structure; the surface is dry and traffic is light, with vehicles paused at a junction. A black taxi directly ahead in the ego lane is stopped for the red signal, holding the ego vehicle. Two small trucks remain stationary along the left curb beside and slightly ahead, staying out of the path. Light oncoming traffic in the right-hand lane moves through the intersection, separated by the center line.", "hazard_reasoning": "There is a black taxi stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The taxi is halted at the red signal, so you must stop to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01585", "split": "train", "clip_key": "2020-0227-104226_112755_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "112755"}, "frames": ["2020-0227-104226_112755_movie_t-3.jpg", "2020-0227-104226_112755_movie_t-2.jpg", "2020-0227-104226_112755_movie_t-1.jpg", "2020-0227-104226_112755_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under an elevated structure with dry pavement, and traffic is heavy and queued at an intersection. A gray-and-red box truck directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle. To the left, a black van in the adjacent same-direction lane waits alongside in the queue, limiting room to maneuver. To the right, a dark hatchback is halted close to the truck's rear in the neighboring lane, keeping pace with the stop. A pedestrian overpass and signal heads are visible ahead, reinforcing the controlled intersection.", "hazard_reasoning": "There is a gray-and-red truck stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid colliding with the halted vehicle at the intersection."}
{"id": "train_01586", "split": "train", "clip_key": "2020-0228-150133_000165_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "000165"}, "frames": ["2020-0228-150133_000165_movie_t-3.jpg", "2020-0228-150133_000165_movie_t-2.jpg", "2020-0228-150133_000165_movie_t-1.jpg", "2020-0228-150133_000165_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way intersection with a wide zebra crossing and a central planted island lies ahead; pavement is good and traffic is moderate as the road splits left and right. A white van ahead in the right lane is stopped near the split, apparently preparing to turn left and blocking that lane. Two box trucks in the same direction proceed slowly in the middle and left lanes through the junction, setting the pace. Pedestrians cluster along both sides of the crosswalk and on the island, waiting to cross. A no right turn sign is posted on the right sidewalk.", "hazard_reasoning": "There is a white van stopping in the right lane, because it is waiting to turn towards the left. Drivers should follow the vehicle ahead to maintain safe spacing and avoid a rear-end collision under this sudden stop situation."}
{"id": "train_01587", "split": "train", "clip_key": "2020-0206-101736_085945_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "085945"}, "frames": ["2020-0206-101736_085945_movie_t-3.jpg", "2020-0206-101736_085945_movie_t-2.jpg", "2020-0206-101736_085945_movie_t-1.jpg", "2020-0206-101736_085945_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with a low hedge median has a single left-side lane per direction; the pavement is dry and slightly rough, and traffic is light. A white flatbed truck is stopped directly ahead in the ego lane, constraining the ego car's pace. Ahead-left, a white hatchback is stopped at the curb very near the truck, encroaching on the travel space beside it. The opposite-direction roadway beyond the median shows little activity, and no traffic signals are in view.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane. The driver must stop to maintain a safe distance and avoid rear-ending the stopped vehicle."}
{"id": "train_01588", "split": "train", "clip_key": "titan_clip_133_000210_movie", "source": {"subset": "titan", "scenario": "clip_133", "frame": "000210"}, "frames": ["titan_clip_133_000210_movie_t-3.jpg", "titan_clip_133_000210_movie_t-2.jpg", "titan_clip_133_000210_movie_t-1.jpg", "titan_clip_133_000210_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban covered driveway between commercial buildings features a single narrow lane with cobblestone pavement, flanked by sidewalks separated by ropes and cones; traffic is light and slow. A small dark van travels ahead in the ego lane and continues straight at low speed, setting the pace. On the left side just ahead, a pedestrian wearing a black uniform stands at the curb facing the roadway, close enough that they might step into the lane. On the right sidewalk a few pedestrians walk and pause near storefronts, staying clear of the lane but creating a busy edge. No traffic signals or posted speeds are visible, and there is no center divider.", "hazard_reasoning": "There is a pedestrian wearing a black uniform and standing, on the left side of the road, in front of the ego-car. The pedestrian may step into the roadway unexpectedly, so the driver should carefully manoeuvre to maintain a safe distance and avoid collision."}
{"id": "train_01589", "split": "train", "clip_key": "2020-0226-140503_084074_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "084074"}, "frames": ["2020-0226-140503_084074_movie_t-3.jpg", "2020-0226-140503_084074_movie_t-2.jpg", "2020-0226-140503_084074_movie_t-1.jpg", "2020-0226-140503_084074_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs straight on dry pavement, with three same-direction lanes and a median separating oncoming traffic to the right; flow is moderate and begins to roll from a stop. Ahead in the ego lane a white hatchback starts to move off at a green light, leading the ego vehicle. In the lane to the left, a large cement mixer truck creeps forward and may constrain the ego's pace. A white van at the far left advances alongside and then edges ahead in its lane. Overhead traffic signals show green for through movement.", "hazard_reasoning": "There is a white hatchback starting to move in front of the ego car, in the ego lane, because of a green traffic light. The driver should start moving promptly to follow the hatchback and clear the intersection while the light remains green."}
{"id": "train_01590", "split": "train", "clip_key": "titan_clip_97_000564_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_97_000564_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_97_000564_movie_t-3_augB1.jpg", "titan_clip_97_000564_movie_t-2_augB1.jpg", "titan_clip_97_000564_movie_t-1_augB1.jpg", "titan_clip_97_000564_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with two-way traffic and no median appears narrow but smoothly paved, and traffic flow is light. Ahead in the ego lane, a man on a bicycle rides near the center-left, moving straight and occupying the ego path because a black sedan is parked along the left curb with orange cones. An oncoming black SUV passes close along the right side of the roadway, continuing straight past the ego vehicle. Parked vehicles line both curbs, including a white van standing on the right ahead, which narrows the available space.", "hazard_reasoning": "There is a man cycling on a bicycle, on the left side of the ego lane, because there is a black sedan parked on the left of the ego lane. The cyclist is riding within the ego lane and may require more space; slowing down reduces the risk of collision with the cyclist."}
{"id": "train_01591", "split": "train", "clip_key": "2020-0206-101736_087619_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "087619"}, "frames": ["2020-0206-101736_087619_movie_t-3.jpg", "2020-0206-101736_087619_movie_t-2.jpg", "2020-0206-101736_087619_movie_t-1.jpg", "2020-0206-101736_087619_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road with a low hedge median and smooth pavement approaches a signalized intersection, and traffic is moderate as vehicles bunch near the junction. A gray flatbed truck directly ahead in the ego lane slows because of congestion at the intersection, setting the ego vehicle's pace. A white mini-van ahead-left in the adjacent lane proceeds straight at a similar speed and stays in its lane without moving toward the ego path. Several oncoming cars travel through the intersection on the far side of the median, separated from the ego lane and not interacting. Overhead traffic lights and direction signs are visible at the junction.", "hazard_reasoning": "There is a gray truck slowing in the ego lane because of traffic congestion ahead in the intersection. The driver should slow down to maintain a safe following distance as traffic ahead is decelerating."}
{"id": "train_01592", "split": "train", "clip_key": "titan_clip_1390_000066_movie", "source": {"subset": "titan", "scenario": "clip_1390", "frame": "000066"}, "frames": ["titan_clip_1390_000066_movie_t-3.jpg", "titan_clip_1390_000066_movie_t-2.jpg", "titan_clip_1390_000066_movie_t-1.jpg", "titan_clip_1390_000066_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A dense urban shopping street with a single narrow lane and no median runs between storefronts; the asphalt looks worn and patchy, and vehicular flow is very light while pedestrian activity is moderate. On the right edge near the camera, a pedestrian walks toward the ego vehicle along the curb, close to the roadway and may enter the travel lane. Farther ahead in the lane, several pedestrians cross from left to right mid-block, occupying the ego path and constraining speed. Other pedestrians continue along both sidewalks without moving into the lane. Orange safety cones and shop displays on the right create a partial roadside obstruction that narrows the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and white pants, and walking towards the ego car on the right side of the road. The pedestrian's path intersects the vehicle's track, so the driver must manoeuvre carefully to prevent a collision."}
{"id": "train_01593", "split": "train", "clip_key": "2020-0129-144857_050298_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "050298"}, "frames": ["2020-0129-144857_050298_movie_t-3.jpg", "2020-0129-144857_050298_movie_t-2.jpg", "2020-0129-144857_050298_movie_t-1.jpg", "2020-0129-144857_050298_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban divided arterial with a low central barrier runs ahead as the ego car follows a narrow curbside lane with patched pavement that tapers to merge right; traffic is light. A white box truck directly ahead in the ego lane changes to the right lane across the chevroned merge area. On the left sidewalk, a pedestrian stands by the fence and keeps to the walkway without entering the road. Farther ahead in the through lane to the right, a small car continues forward and passes the area without affecting the ego. A bollard and striped gore mark the merge point separating the side lane from the through lane.", "hazard_reasoning": "A white truck in front of the ego car changing to the right lane. The truck's lane change could obscure the road ahead and requires the driver to slow down to maintain safe distance."}
{"id": "train_01594", "split": "train", "clip_key": "2020-0228-150133_070738_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "070738"}, "frames": ["2020-0228-150133_070738_movie_t-3.jpg", "2020-0228-150133_070738_movie_t-2.jpg", "2020-0228-150133_070738_movie_t-1.jpg", "2020-0228-150133_070738_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with good pavement and painted double center lines runs through a commercial area, and traffic is moderate as the ego vehicle approaches a signalized intersection. A dark sedan ahead in the ego lane continues straight through the green light and governs the ego vehicle's pace. Oncoming cars to the right advance straight in their lanes beyond the double lines, passing through the junction without crossing into the ego lane. A cyclist on the right sidewalk pedals slowly parallel to the road near storefronts, remaining outside the travel lanes. Overhead signals show green.", "hazard_reasoning": "No hazards detected; the driver can continue driving normally."}
{"id": "train_01595", "split": "train", "clip_key": "titan_clip_175_000048_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_175_000048_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_175_000048_movie_t-3_augB1.jpg", "titan_clip_175_000048_movie_t-2_augB1.jpg", "titan_clip_175_000048_movie_t-1_augB1.jpg", "titan_clip_175_000048_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious", "environment_perception": "An urban two-way street with a single lane in each direction approaches a cross intersection with a zebra crossing; the ego travels in the left lane, the pavement is smooth, and traffic is light with no signals visible. On the left near the crosswalk, a pedestrian in black pants carrying an umbrella walks toward the ego car and steps into the ego lane, potentially entering its path. At the left foreground, another pedestrian begins crossing ahead from left to right across the ego lane, constraining the approach. In the cross street to the left, a white van waits at the intersection and could enter the ego lane after the crossing. A black sedan is parked along the right curb near the corner.", "hazard_reasoning": "A pedestrian wearing black pants, carrying an umbrella, and walking on the left side of the road, towards the ego car. The pedestrian is moving into the vehicle's path, so you should be cautious to anticipate their crossing."}
{"id": "train_01596", "split": "train", "clip_key": "titan_clip_559_000402_movie", "source": {"subset": "titan", "scenario": "clip_559", "frame": "000402"}, "frames": ["titan_clip_559_000402_movie_t-3.jpg", "titan_clip_559_000402_movie_t-2.jpg", "titan_clip_559_000402_movie_t-1.jpg", "titan_clip_559_000402_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban shopping street with a single narrow shared lane runs between storefronts, the pavement smooth and traffic light. On the left edge close ahead, a man in a grey shirt and green hat pushes a green trolley toward the ego vehicle, moving along the lane side and near the path. Slightly ahead in the center, a pedestrian in dark clothing walks diagonally right to left across the lane, constraining the ego vehicle's pace. Farther ahead, an oncoming cyclist approaches along the middle of the road, occupying the travel space. A parked bicycle, shop signs, and a food stall crowd the curbs, narrowing the corridor.", "hazard_reasoning": "There is a man wearing a grey shirt and a green hat, pushing a green trolley, on the left side of the ego lane, towards the ego car. The pedestrian is encroaching on the vehicle's lane and may obstruct the path, so the driver should carefully manoeuvre around him."}
{"id": "train_01597", "split": "train", "clip_key": "2020-0203-114632_001413_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "001413"}, "frames": ["2020-0203-114632_001413_movie_t-3.jpg", "2020-0203-114632_001413_movie_t-2.jpg", "2020-0203-114632_001413_movie_t-1.jpg", "2020-0203-114632_001413_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop and yield to crossing pedestrians", "environment_perception": "An urban two-lane two-way street with no median and dry, smooth pavement bends slightly left beyond the junction; traffic is light and the ego-vehicle is stopped at a signalized crosswalk. Ahead in the crosswalk, several pedestrians, including people in dark-purple, pink, and red coats, cross from the right and from the left under the red light, blocking the ego's path. Farther ahead in the same direction, a small truck proceeds straight beyond the intersection at low speed. Oncoming cars pass through the junction in the opposite lane. A silver van stands at the curb to the right near the crosswalk. The overhead signal for the ego shows solid red.", "hazard_reasoning": "There are three pedestrians wearing dark-purple, pink, and red coats, and crossing the crosswalk from right to left, because of the red traffic light. The driver should stop and yield to the crossing pedestrians to prevent a collision while the light is red."}
{"id": "train_01598", "split": "train", "clip_key": "2020-0131-135401_080856_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "080856"}, "frames": ["2020-0131-135401_080856_movie_t-3.jpg", "2020-0131-135401_080856_movie_t-2.jpg", "2020-0131-135401_080856_movie_t-1.jpg", "2020-0131-135401_080856_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the white van", "environment_perception": "An urban elevated roadway with three same-direction lanes and guardrails on both sides appears dry and in good condition, with light to moderate traffic flowing smoothly and no oncoming traffic visible due to a divided carriageway. A white van ahead in the left lane continues forward at a steady pace, edging slightly toward the center lane as the road ahead is clear. Farther ahead in the center lane, a small white truck moves steadily and loosely sets the pace for traffic in that lane. Cars in the right lane overtake gradually while keeping distance. Overhead gantries and a crossing elevated road are visible, with no signals in view.", "hazard_reasoning": "There's a white van moving forward on the left lane because the road ahead is clear. The van could merge into the ego lane unexpectedly, so the driver should be cautious of the van's potential cut-in."}
{"id": "train_01599", "split": "train", "clip_key": "2020-0207-101955_015790_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_015790_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_015790_movie_t-3_augB1.jpg", "2020-0207-101955_015790_movie_t-2_augB1.jpg", "2020-0207-101955_015790_movie_t-1_augB1.jpg", "2020-0207-101955_015790_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe following distance.", "environment_perception": "An urban multilane arterial with smooth pavement carries slow, congested same-direction traffic, with painted yellow lane lines and a red-marked side lane protected by railings. Ahead in the ego lane, a blue hatchback slows because of traffic congestion ahead, directly setting the ego car's pace. In the adjacent right lane, a small white flatbed truck travels alongside and also brakes with the queue, limiting opportunities to change lanes. On the far left, a cyclist proceeds forward in the separated red lane behind a guardrail and remains outside the traffic stream.", "hazard_reasoning": "There is a blue hatchback slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a collision in congested traffic."}
{"id": "train_01600", "split": "train", "clip_key": "2020-0226-140503_032542_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "032542"}, "frames": ["2020-0226-140503_032542_movie_t-3.jpg", "2020-0226-140503_032542_movie_t-2.jpg", "2020-0226-140503_032542_movie_t-1.jpg", "2020-0226-140503_032542_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes runs beside a concrete median wall that separates oncoming traffic on a parallel roadway; the pavement looks slightly damp and overall flow is slow near an intersection. A black van is stopped directly ahead in the ego lane, blocking the path and constraining the ego car's pace. A cyclist travels straight in the blue-marked lane along the left curb near the ego lane and may drift into it. Pedestrians on the left sidewalk walk past shops and approach the curb but remain off the roadway. Overhead traffic signals ahead display red.", "hazard_reasoning": "There is a black van stopped in the ego lane, in front of the ego car. The driver must stop to avoid a collision with the stationary vehicle ahead."}
{"id": "train_01601", "split": "train", "clip_key": "2020-0131-135401_066952_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "066952"}, "frames": ["2020-0131-135401_066952_movie_t-3.jpg", "2020-0131-135401_066952_movie_t-2.jpg", "2020-0131-135401_066952_movie_t-1.jpg", "2020-0131-135401_066952_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane roadway crosses a steel truss bridge with guardrails and planters, and the pavement looks smooth with a visible transverse expansion joint; traffic is light to moderate and flows steadily with only same-direction lanes visible. A box truck ahead in the middle lane continues at a steady speed and remains in its lane, loosely pacing vehicles nearby. In the adjacent right lane, a white kei van close to the camera overtakes gradually and moves ahead without entering the ego lane. Farther ahead, another large truck proceeds in the right lane at a similar pace, keeping its distance. No signals or unusual signage are apparent.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01602", "split": "train", "clip_key": "2020-0205-152530_054238_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "054238"}, "frames": ["2020-0205-152530_054238_movie_t-3.jpg", "2020-0205-152530_054238_movie_t-2.jpg", "2020-0205-152530_054238_movie_t-1.jpg", "2020-0205-152530_054238_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for congestion ahead", "environment_perception": "An urban arterial under elevated expressways shows smooth pavement and heavy, slow-moving flow in at least two same-direction lanes. The ego vehicle follows a white sedan directly ahead in its lane that is stopped because congestion forms a queue further forward. In the adjacent right lane slightly ahead, a white minivan rolls slowly with the line of traffic, keeping pace with the ego car. Beside the camera on the far right, a small white flatbed truck sits nearly still in the curb lane, reducing lateral space next to the ego vehicle.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because there is traffic congestion ahead. The driver should stop to avoid approaching a halted vehicle and to safely accommodate the slow-moving traffic."}
{"id": "train_01603", "split": "train", "clip_key": "2020-0227-104226_101768_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "101768"}, "frames": ["2020-0227-104226_101768_movie_t-3.jpg", "2020-0227-104226_101768_movie_t-2.jpg", "2020-0227-104226_101768_movie_t-1.jpg", "2020-0227-104226_101768_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow", "environment_perception": "An urban multi-lane road with three same-direction lanes runs past shops on the left and a guardrail on the right; the dark asphalt looks smooth and traffic is moderate under clear daylight. Ahead in the ego lane, a white box truck with red markings slows and the gap closes, so it governs the ego vehicle's pace. In the adjacent right lane, a white hatchback continues slightly faster and passes without changing lanes. Near the left curb, a small kei-truck is parked at the roadside just off the travel lane and remains stationary. No signals or unusual signs are prominent, and no oncoming traffic is visible.", "hazard_reasoning": "There is a white and red truck slowing in front of the ego car, in the ego lane. The truck is reducing speed ahead, so the driver needs to slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_01604", "split": "train", "clip_key": "2020-0127-132751_056009_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "056009"}, "frames": ["2020-0127-132751_056009_movie_t-3.jpg", "2020-0127-132751_056009_movie_t-2.jpg", "2020-0127-132751_056009_movie_t-1.jpg", "2020-0127-132751_056009_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene unfolds on a narrow single-lane road bordered by buildings on the left and a high sound barrier on the right; the pavement is dry and smooth, and traffic is light with steady flow. Far ahead in the ego lane, a silver sedan slows as the vehicle in front makes a right turn, briefly constraining the pace. Nearer on the left, a silver hatchback noses out from a driveway and waits to merge, positioned close to the travel lane and potentially entering the ego path. A few pedestrians walk along the left sidewalk, continuing parallel to traffic without stepping into the roadway. No salient signals or signs are prominent.", "hazard_reasoning": "There is a silver sedan slowing in the ego lane, in front of the ego car, because the vehicle ahead is making a right turn. The sedan's sudden deceleration due to the turning vehicle ahead could lead to a rear-end collision if the driver does not reduce speed in time, so the driver should slow down."}
{"id": "train_01605", "split": "train", "clip_key": "2020-0213-143552_068679_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "068679"}, "frames": ["2020-0213-143552_068679_movie_t-3.jpg", "2020-0213-143552_068679_movie_t-2.jpg", "2020-0213-143552_068679_movie_t-1.jpg", "2020-0213-143552_068679_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with a single lane in the ego direction is divided from oncoming traffic by a low hedge median; the pavement is dry and traffic is light. A white box truck travels ahead in the ego lane at a steady pace as the lane in front of it is clear. On the right, an oncoming white van moves past on the opposite carriageway behind the median and does not affect the ego path. Overhead blue signs indicate our lane goes straight while a separate lane to the right is for right turns.", "hazard_reasoning": "There is a white truck moving ahead in front of the ego car in the ego lane, because the lane ahead is clear. The driver should remain alert to changes in speed or movement of this truck, as an unexpected slowdown could occur."}
{"id": "train_01606", "split": "train", "clip_key": "titan_clip_86_000018_movie", "source": {"subset": "titan", "scenario": "clip_86", "frame": "000018"}, "frames": ["titan_clip_86_000018_movie_t-3.jpg", "titan_clip_86_000018_movie_t-2.jpg", "titan_clip_86_000018_movie_t-1.jpg", "titan_clip_86_000018_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban commercial street with a single lane each direction and no median stretches ahead; the pavement looks smooth and traffic is light with a few vehicles farther down the opposite lane. At the crosswalk directly ahead, a pedestrian wearing a black suit crosses from the left side to the right side, moving across the ego lane and occupying the path. On the right curb at the same crosswalk, another pedestrian stands and waits, watching the scene but not stepping out. A white minivan is stopped at the left curb just beyond the crosswalk, slightly narrowing the lane on the ego side.", "hazard_reasoning": "There is a pedestrian wearing a black suit and crossing the street in a crosswalk, from the left side to the right side. Since they are in the marked crosswalk and have the right of way, you should stop to yield and avoid a collision."}
{"id": "train_01607", "split": "train", "clip_key": "titan_clip_970_000522_movie", "source": {"subset": "titan", "scenario": "clip_970", "frame": "000522"}, "frames": ["titan_clip_970_000522_movie_t-3.jpg", "titan_clip_970_000522_movie_t-2.jpg", "titan_clip_970_000522_movie_t-1.jpg", "titan_clip_970_000522_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban shopping street appears with buildings tight to a narrow two-way road that lacks a center divider; the asphalt is smooth and traffic is light with no moving vehicles ahead or oncoming. On the left, several pedestrians are very near the lane edge as they walk past storefronts, which constrains the ego vehicle's pace. Farther ahead toward midblock, more pedestrians cross the roadway and may enter the ego lane. Also on the left foreground, a person walks a bicycle along the green shoulder and could drift into the lane. A white car is parked on the right while orange cones and small signs line the curb, slightly narrowing the passage. A blue P parking sign and a no-parking round sign are visible on the right.", "hazard_reasoning": "An orange traffic cone stands near the right curb, indicating possible roadwork or obstruction. The driver should slow down and pass carefully to avoid potential hazards near the curb."}
{"id": "train_01608", "split": "train", "clip_key": "titan_clip_974_000240_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_974_000240_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_974_000240_movie_t-3_augB1.jpg", "titan_clip_974_000240_movie_t-2_augB1.jpg", "titan_clip_974_000240_movie_t-1_augB1.jpg", "titan_clip_974_000240_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way street approaches a level railway crossing with narrow lanes, no median, and smooth pavement; vehicle traffic is light while pedestrian flow is heavy across the tracks. Several pedestrians cross directly ahead from both sides over the rails, walking through the ego lane and constraining any approach to the crossing. Just beyond the tracks, a pedestrian in a white shirt carrying a handbag walks away from the ego in the middle of the road, remaining in the vehicle's path. On the right side near the rails, another pedestrian advances toward the crossing and may enter the lane. A dark minivan sits ahead near the left curb beyond the crossing, partially occluded by buildings. Railway crossing masts with warning lights and gates flank the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, walking in the middle of the road, away from the ego car, because the sidewalk is crowded. The driver should stop to avoid colliding with the pedestrian crossing the road."}
{"id": "train_01609", "split": "train", "clip_key": "2020-0131-135401_007157_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "007157"}, "frames": ["2020-0131-135401_007157_movie_t-3.jpg", "2020-0131-135401_007157_movie_t-2.jpg", "2020-0131-135401_007157_movie_t-1.jpg", "2020-0131-135401_007157_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single lane each direction and no median appears narrow but smoothly paved; traffic is light, though progress halts briefly. A large white box truck is stopped directly ahead in the ego lane, blocking the path and constraining the pace, consistent with the caption. Along the left curb, several white mini-vans are parked and encroach on the lane, leaving little room to pass. Two pedestrians on the left walk near the parked vehicles toward the rear of the truck and may step into the lane around it. No oncoming traffic is visible in the right-side opposing lane. A metal fence lines the right shoulder, and strong sun glare from the front-right throws deep shadows across the roadway.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The driver should stop to avoid colliding with the stationary truck and reduce the risk caused by the blocked sightline."}
{"id": "train_01610", "split": "train", "clip_key": "titan_clip_708_000480_movie", "source": {"subset": "titan", "scenario": "clip_708", "frame": "000480"}, "frames": ["titan_clip_708_000480_movie_t-3.jpg", "titan_clip_708_000480_movie_t-2.jpg", "titan_clip_708_000480_movie_t-1.jpg", "titan_clip_708_000480_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrian walking on the left", "environment_perception": "An urban residential setting appears on a very narrow two-way road without a center line, smooth pavement, and no divider; traffic is light with no other moving vehicles. Ahead on the left edge, a pedestrian wearing a white T-shirt and brown shorts, carrying a backpack and an umbrella, walks away from the ego vehicle along the shoulder close to the travel path. A yellow school-zone warning sign stands on the right. Parked vehicles and bicycles line the left near driveways, and bins and covered items on the right slightly narrow the corridor but do not obstruct the lane.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, brown shorts, carrying a backpack, and carrying an umbrella, walking on the left side of the road, away from the ego car. The pedestrian may move unpredictably toward the driving lane, so the driver should remain aware and be prepared to slow down."}
{"id": "train_01611", "split": "train", "clip_key": "titan_clip_1088_000330_movie", "source": {"subset": "titan", "scenario": "clip_1088", "frame": "000330"}, "frames": ["titan_clip_1088_000330_movie_t-3.jpg", "titan_clip_1088_000330_movie_t-2.jpg", "titan_clip_1088_000330_movie_t-1.jpg", "titan_clip_1088_000330_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow two-way residential street with a single unmarked lane and no sidewalks runs between closely spaced buildings; the pavement is smooth and traffic is light with no moving vehicles. Ahead in the middle of the lane, a man in a gray T-shirt holding a white bag walks toward the ego vehicle because there is no sidewalk, occupying the path and constraining its pace. A black SUV is parked partially out of a driveway on the left and a bicycle stands by the hedge, narrowing the passage on that side. No signals or notable signs are visible.", "hazard_reasoning": "There is a man wearing a gray t-shirt and holding a white bag, walking in the middle of the road towards the ego car, because there is no sidewalk. The driver should carefully manoeuvre around him to avoid a collision."}
{"id": "train_01612", "split": "train", "clip_key": "2020-0131-135401_000621_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "000621"}, "frames": ["2020-0131-135401_000621_movie_t-3.jpg", "2020-0131-135401_000621_movie_t-2.jpg", "2020-0131-135401_000621_movie_t-1.jpg", "2020-0131-135401_000621_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban two-way street with opposing lanes and a solid centerline runs between mid-rise buildings; the pavement is smooth and traffic is light to moderate, with parked cars lining both curbs. A white box truck ahead in the ego lane slows, constraining the ego car's pace. An oncoming white car in the right-hand lane approaches and passes, remaining in its lane and discouraging any overtaking. Several pedestrians on the left sidewalk walk along the curb while others stand near entrances on the right, all remaining off the roadway. No salient signals or posted speeds are visible.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01613", "split": "train", "clip_key": "titan_clip_901_000252_movie", "source": {"subset": "titan", "scenario": "clip_901", "frame": "000252"}, "frames": ["titan_clip_901_000252_movie_t-3.jpg", "titan_clip_901_000252_movie_t-2.jpg", "titan_clip_901_000252_movie_t-1.jpg", "titan_clip_901_000252_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban commercial street with paving-stone surface has one lane in each direction and no median, and traffic moves slowly with same-direction vehicles queued ahead. Directly ahead, a male pedestrian in black crosses from the left to the right in front of the ego-vehicle where there is no marked crosswalk, briefly occupying the lane. Farther ahead in the same direction, a blue cargo truck is stopped or creeping, constraining the ego car's pace. On the right edge, several pedestrians linger near the curb and edge forward, suggesting they may step into the lane. A large delivery truck is parked along the left side beside the ego car, narrowing the roadway.", "hazard_reasoning": "There is a male pedestrian, wearing black pants and a black shirt, crossing the road from the left side, to the right side of the street, in front of the ego-car, because there is no pedestrian crossing. The pedestrian's unpredictable movement across the driving lane requires the driver to carefully manoeuvre around him to avoid collision."}
{"id": "train_01614", "split": "train", "clip_key": "2020-0131-135401_030221_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030221"}, "frames": ["2020-0131-135401_030221_movie_t-3.jpg", "2020-0131-135401_030221_movie_t-2.jpg", "2020-0131-135401_030221_movie_t-1.jpg", "2020-0131-135401_030221_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the truck", "environment_perception": "An urban two-way road with one lane each direction approaches a cross intersection; there is no median, the asphalt looks smooth, and traffic is moderate. Ahead, a white truck in the oncoming right lane drives toward the ego through the intersection, making it the primary opposing vehicle. Behind it, a small white car also approaches in the opposing lane and continues straight past the ego. At the right-side side street, a silver car waits at the mouth to turn onto the main road, poised to merge into the ego lane after a gap. A box truck is stopped along the left curb beyond the crosswalk, narrowing the space after the intersection.", "hazard_reasoning": "There is a white truck driving in the right lane, towards the ego car. The truck may merge into your lane or impede your path, so you should yield to avoid a potential collision."}
{"id": "train_01615", "split": "train", "clip_key": "2020-0228-102841_016944_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "016944"}, "frames": ["2020-0228-102841_016944_movie_t-3.jpg", "2020-0228-102841_016944_movie_t-2.jpg", "2020-0228-102841_016944_movie_t-1.jpg", "2020-0228-102841_016944_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop and yield to crossing pedestrians", "environment_perception": "A busy urban intersection comes into view, with the ego car stopped on smooth pavement at a wide multi-lane junction lacking a median while cross-street traffic is moderate. A group of pedestrians crosses directly ahead from right to left on the zebra crosswalk, moving through the ego lane and holding the vehicle. Several cars and white vans on the far side proceed laterally through the intersection along the cross street, clear of the ego path. A cyclist at the far left waits by the curb beside the crosswalk.", "hazard_reasoning": "There is a group of pedestrians crossing the street at the crosswalk from the right to the left. The driver must stop to allow pedestrians to cross safely and avoid collision."}
{"id": "train_01616", "split": "train", "clip_key": "titan_clip_151_000312_movie", "source": {"subset": "titan", "scenario": "clip_151", "frame": "000312"}, "frames": ["titan_clip_151_000312_movie_t-3.jpg", "titan_clip_151_000312_movie_t-2.jpg", "titan_clip_151_000312_movie_t-1.jpg", "titan_clip_151_000312_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban side street with a narrow two-way carriageway and no median shows smooth pavement and light traffic throughout. A white delivery truck is stopped immediately along the left edge next to the ego vehicle, its body protruding into the ego lane and constraining the passage. Farther ahead on the left, a black van is stopped with its rear hatch open while additional cars are parked along the curb, keeping the left side tight as the ego approaches. No oncoming traffic is visible, and the right side is lined with a continuous guardrail and storefronts with a parked bicycle.", "hazard_reasoning": "No immediate hazards are present in the scene, as there are no moving obstacles or obscured road users, so no driver warning is necessary."}
{"id": "train_01617", "split": "train", "clip_key": "2020-0205-152530_046038_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "046038"}, "frames": ["2020-0205-152530_046038_movie_t-3.jpg", "2020-0205-152530_046038_movie_t-2.jpg", "2020-0205-152530_046038_movie_t-1.jpg", "2020-0205-152530_046038_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road approaches an arched bridge, with smooth pavement and light to moderate same-direction traffic. All visible lanes carry vehicles in the ego direction toward the bridge. A dark sedan ahead slightly left of center proceeds straight at a steady pace in the ego lane. A white van to the right advances in the adjacent lane, traveling parallel without signaling a lane change. Farther ahead, two trucks in the left lanes continue onto the bridge, creating a small platoon of traffic. An overhead signal above the approach shows a green left arrow. The left side is bordered by a riverside promenade with railings, and no hazards or oncoming vehicles appear.", "hazard_reasoning": "No hazards are detected in this clear and open environment; continue driving at a safe speed and stay attentive."}
{"id": "train_01618", "split": "train", "clip_key": "titan_clip_131_000348_movie", "source": {"subset": "titan", "scenario": "clip_131", "frame": "000348"}, "frames": ["titan_clip_131_000348_movie_t-3.jpg", "titan_clip_131_000348_movie_t-2.jpg", "titan_clip_131_000348_movie_t-1.jpg", "titan_clip_131_000348_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck.", "environment_perception": "An urban downtown street with a narrow single through lane and no median runs between tall buildings; the cobblestone pavement is dry and traffic is light with mostly stopped vehicles. A red truck is parked on the left side of the road, partially intruding into the lane and constraining the ego vehicle's path. Ahead on the right, a white box truck stands at the curb, further narrowing the corridor. Several pedestrians keep to the right edge of the roadway, including one pushing a stroller who walks close to the lane. Construction scaffolding and rows of traffic cones line both sides, forming a temporary work zone.", "hazard_reasoning": "There is a red truck, parked, on the left side of the road. This parked fire truck partially blocks the lane and reduces visibility, so the driver should carefully manoeuvre around it."}
{"id": "train_01619", "split": "train", "clip_key": "2020-0129-144857_030144_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "030144"}, "frames": ["2020-0129-144857_030144_movie_t-3.jpg", "2020-0129-144857_030144_movie_t-2.jpg", "2020-0129-144857_030144_movie_t-1.jpg", "2020-0129-144857_030144_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs under an elevated structure with guardrails and red bollards on the right, the pavement looks wet and traffic moves slowly. A black van directly ahead in the ego lane accelerates from low speed, briefly opening a gap before the camera car. Farther ahead in the same lane, a small box truck continues steadily toward a signalized intersection and effectively sets the pace for our lane. To the left, an ambulance van progresses slowly in the adjacent lane, staying parallel and limiting opportunities to merge. A traffic signal is visible ahead governing the flow at the next junction.", "hazard_reasoning": "There is a black van accelerating in front of the ego car, in the ego lane. The wet road surface can cause reduced traction, so sudden speed changes may lead to skidding or loss of control."}
{"id": "train_01620", "split": "train", "clip_key": "2020-0220-151845_049015_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "049015"}, "frames": ["2020-0220-151845_049015_movie_t-3.jpg", "2020-0220-151845_049015_movie_t-2.jpg", "2020-0220-151845_049015_movie_t-1.jpg", "2020-0220-151845_049015_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Start moving", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway with smooth pavement and moderate traffic; the left lane is slow while the center and right move more freely. A red truck with a yellow-covered load is directly ahead in the ego lane and accelerates forward ahead of the ego car. In the adjacent left lane, a white van alongside creeps in the queue, remaining parallel and not entering the ego lane. In the right lane, a silver microvan ahead-right travels at a steady speed and stays in its lane. Overhead blue guide signs point toward destinations including Hachioji and Takao and show an entrance about 200 m ahead.", "hazard_reasoning": "There is a red and yellow truck accelerating in front of the ego car, in the ego lane. The truck's rapid acceleration reduces the gap ahead, so the driver should start moving to maintain a safe distance and avoid sudden maneuvers."}
{"id": "train_01621", "split": "train", "clip_key": "2020-0205-103411_008163_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "008163"}, "frames": ["2020-0205-103411_008163_movie_t-3.jpg", "2020-0205-103411_008163_movie_t-2.jpg", "2020-0205-103411_008163_movie_t-1.jpg", "2020-0205-103411_008163_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the unloading truck", "environment_perception": "An urban multilane two-way street with no physical median runs straight between mid-rise buildings; the pavement is clean and traffic is moderate with steady oncoming flow. Ahead in the leftmost same-direction lane, a white truck is stopped for unloading, occupying the lane and constraining the ego vehicle's path. Slightly farther ahead near the center of the roadway, a small dark van proceeds in the same direction at a steady pace. In the oncoming lanes to the right, a white minivan approaches and passes through the scene without turning. At the left curb close to the ego car, a black sedan is parked, narrowing the margin. No-parking signs are posted on the left side of the street.", "hazard_reasoning": "There is a white truck stopped in the left lane, because it is being unloaded. The stopped truck unloading cargo may obstruct the lane and require you to slow down or change lanes, so you should exercise caution."}
{"id": "train_01622", "split": "train", "clip_key": "2020-0225-102455_017121_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "017121"}, "frames": ["2020-0225-102455_017121_movie_t-3.jpg", "2020-0225-102455_017121_movie_t-2.jpg", "2020-0225-102455_017121_movie_t-1.jpg", "2020-0225-102455_017121_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of truck merging left", "environment_perception": "An urban multi-lane arterial with chevron buffers and no median comes into view, the pavement dry and smooth and overall traffic moderate and steady. A white box truck directly ahead moves left, changing into the left lane in front of the ego car and briefly constraining its pace. To the right, several cars in the adjacent lanes continue straight at a steady speed, some overtaking the ego vehicle. Along the left curb, parked vehicles remain stationary, narrowing space beside the merging truck.", "hazard_reasoning": "There is a white truck changing lanes in front of the ego car, to the left lane. The truck's lane change could affect the ego vehicle's path, so the driver should stay alert and ready to adjust speed."}
{"id": "train_01623", "split": "train", "clip_key": "2020-0217-144444_008244_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "008244"}, "frames": ["2020-0217-144444_008244_movie_t-3.jpg", "2020-0217-144444_008244_movie_t-2.jpg", "2020-0217-144444_008244_movie_t-1.jpg", "2020-0217-144444_008244_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban multi-lane arterial runs straight with smooth pavement, the directions separated by a painted median with diagonal markings, and traffic is light to moderate. A dark sedan ahead in the ego lane continues straight at a steady speed, keeping a consistent gap. Ahead on the left, a gray-and-white truck is parked at the curb near a bus stop, stationary and close to the lane edge, leaving only a narrow shoulder. In the right-side carriageway, oncoming vehicles flow smoothly with wide gaps. Pedestrians wait along the sidewalks by the shops without entering the roadway.", "hazard_reasoning": "There is a gray-and-white truck parked on the left side of the road. The parked vehicle reduces the available lane space, so you should carefully manoeuvre around the parked truck to avoid collision."}
{"id": "train_01624", "split": "train", "clip_key": "titan_clip_71_000078_movie", "source": {"subset": "titan", "scenario": "clip_71", "frame": "000078"}, "frames": ["titan_clip_71_000078_movie_t-3.jpg", "titan_clip_71_000078_movie_t-2.jpg", "titan_clip_71_000078_movie_t-1.jpg", "titan_clip_71_000078_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban side street with one narrow lane in each direction and no median is shown, the pavement is sound and traffic is light. Parked vans and a small pickup line both curbs near an unsignalized intersection, narrowing the approach. Ahead in the ego lane at the zebra crossing, a man in a blue shirt carrying a handbag walks away from the ego-car across the road, briefly occupying the path. Just to his right, two other pedestrians also cross in the same direction and remain ahead of the vehicle's intended path. A painted stop marking is visible before the crosswalk.", "hazard_reasoning": "There is a man carrying a handbag, wearing a blue shirt, and walking at a crosswalk away from the ego-car. The pedestrian is crossing ahead, so the driver must stop to avoid a potential collision at the crosswalk."}
{"id": "train_01625", "split": "train", "clip_key": "2020-0207-101955_092324_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "092324"}, "frames": ["2020-0207-101955_092324_movie_t-3.jpg", "2020-0207-101955_092324_movie_t-2.jpg", "2020-0207-101955_092324_movie_t-1.jpg", "2020-0207-101955_092324_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with smooth pavement and painted lane dividers; traffic is heavy and bunches up near a signalized intersection ahead. A blue sedan directly ahead in the ego lane slows near the intersection because congestion builds in front. To the left, a flatbed truck carrying a small van travels alongside at low speed, staying close to the ego car and limiting a left merge. In the adjacent right lane farther ahead, a large truck also slows toward the queue, pacing the sedan and constraining progress. Overhead traffic lights span the junction as several right-side lanes continue straight.", "hazard_reasoning": "There is a blue sedan slowing near the intersection, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adjust speed for the congested traffic conditions."}
{"id": "train_01626", "split": "train", "clip_key": "titan_clip_1095_000408_movie", "source": {"subset": "titan", "scenario": "clip_1095", "frame": "000408"}, "frames": ["titan_clip_1095_000408_movie_t-3.jpg", "titan_clip_1095_000408_movie_t-2.jpg", "titan_clip_1095_000408_movie_t-1.jpg", "titan_clip_1095_000408_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban two-way street with no median and smooth pavement shows light traffic. Ahead on the right, a white truck is parked at the curb being unloaded, and a worker stands beside its rear close to the roadway, narrowing the usable lane for the ego vehicle. Farther ahead to the right in the opposite direction, a white car approaches slowly in the oncoming lane. Several bicycles and planters cluster along the right sidewalk near the truck, further tightening the roadside space.", "hazard_reasoning": "There is a white truck parked on the right side of the road because it is being unloaded. The parked truck partially blocks the view ahead, creating a blind spot that may conceal pedestrians or other hazards, so the driver should manoeuvre carefully around it."}
{"id": "train_01627", "split": "train", "clip_key": "2020-0225-145150_038911_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "038911"}, "frames": ["2020-0225-145150_038911_movie_t-3.jpg", "2020-0225-145150_038911_movie_t-2.jpg", "2020-0225-145150_038911_movie_t-1.jpg", "2020-0225-145150_038911_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with multiple same-direction lanes and a fenced side lane runs straight between mid-rise buildings; the pavement is dry and smooth and traffic is moderate. A blue truck directly ahead in the ego lane accelerates away, opening the gap. A black minivan travels slightly ahead to the ego's left in the adjacent lane at a steady pace, limiting a left merge. To the right, a white van moves parallel in the separated lane beyond the fence with no immediate interaction. A pedestrian walks along the right sidewalk beside the fence, remaining clear of the roadway.", "hazard_reasoning": "There is a blue truck accelerating in front of the ego car. The driver should accelerate to maintain position and prevent vehicles from cutting into the gap created ahead."}
{"id": "train_01628", "split": "train", "clip_key": "2020-0228-102841_068992_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "068992"}, "frames": ["2020-0228-102841_068992_movie_t-3.jpg", "2020-0228-102841_068992_movie_t-2.jpg", "2020-0228-102841_068992_movie_t-1.jpg", "2020-0228-102841_068992_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street runs between buildings with no median, dry pavement, and railings and cones along the left; traffic is light with several parked vehicles. Two pedestrians carrying backpacks cross directly ahead from the left to the right side, moving through the ego lane and constraining its pace. On the right sidewalk a pedestrian walks along the curb, remaining off the roadway. A white van stands ahead near the left edge while more parked cars line the right, narrowing the available passage.", "hazard_reasoning": "There are two pedestrians carrying backpacks, crossing the street in front of the ego car to the right side. The driver should slow down because the pedestrians are crossing directly in the vehicle's path."}
{"id": "train_01629", "split": "train", "clip_key": "titan_clip_1310_000330_movie", "source": {"subset": "titan", "scenario": "clip_1310", "frame": "000330"}, "frames": ["titan_clip_1310_000330_movie_t-3.jpg", "titan_clip_1310_000330_movie_t-2.jpg", "titan_clip_1310_000330_movie_t-1.jpg", "titan_clip_1310_000330_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "A narrow urban residential two-way street with no centerline and dry pavement carries light traffic as the ego travels along the left. Ahead on the left, a pedestrian in a white shirt and black pants walks toward the vehicle in the roadway because another walker uses the sidewalk to his right, so he occupies part of the ego lane. Just beyond him near the same edge, a person with a bicycle approaches slowly in the road. Farther ahead in the same direction, a small truck stands near the middle of the lane, narrowing the passage and setting the pace. No salient signals are visible.", "hazard_reasoning": "A pedestrian in a white shirt and black pants, walking on the left side of the road, towards the ego car because there's someone walking on the sidewalk, to his right. The pedestrian is crossing into the vehicle's path, so the driver should be aware of their presence to avoid a potential collision."}
{"id": "train_01630", "split": "train", "clip_key": "titan_clip_793_000138_movie", "source": {"subset": "titan", "scenario": "clip_793", "frame": "000138"}, "frames": ["titan_clip_793_000138_movie_t-3.jpg", "titan_clip_793_000138_movie_t-2.jpg", "titan_clip_793_000138_movie_t-1.jpg", "titan_clip_793_000138_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian in road", "environment_perception": "An urban residential street extends ahead, a narrow two-way road with edge lines but no center divider, smooth pavement, and essentially no traffic. The ego vehicle continues straight in the left lane with clear space and no oncoming vehicles nearby. No pedestrians or cyclists are visible in the roadway; although described as a pedestrian in a black T-shirt walking a dog in the middle due to construction on the left, neither the person, dog, nor any construction activity appears in view. No traffic signals or speed signs are seen, and there are no parked vehicles or obstacles encroaching on the lane.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, walking a dog in the middle of the road, away from the ego car, because of construction on the left side. The pedestrian's position in the roadway creates a potential collision risk, so the driver should exercise caution as they approach."}
{"id": "train_01631", "split": "train", "clip_key": "titan_clip_378_000396_movie", "source": {"subset": "titan", "scenario": "clip_378", "frame": "000396"}, "frames": ["titan_clip_378_000396_movie_t-3.jpg", "titan_clip_378_000396_movie_t-2.jpg", "titan_clip_378_000396_movie_t-1.jpg", "titan_clip_378_000396_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow shared lane paved in interlocking bricks has no divider or lane markings, and motor traffic is light while pedestrian activity is heavy; the ego vehicle moves slowly. A cyclist in a white shirt rides on the right side toward the ego car, staying near the curb but approaching head-on and likely to pass close. Several pedestrians ahead occupy the lane, some crossing from right to left between storefronts and others walking along the center, which limits the vehicle's progress. Shop signs, cones, and parked bicycles line both sides and slightly narrow the roadway.", "hazard_reasoning": "There is a cyclist wearing a white shirt and cycling on the right side of the road, toward the ego car. You should slow down since the cyclist is approaching and may move into your path unexpectedly."}
{"id": "train_01632", "split": "train", "clip_key": "titan_clip_1291_000588_movie", "source": {"subset": "titan", "scenario": "clip_1291", "frame": "000588"}, "frames": ["titan_clip_1291_000588_movie_t-3.jpg", "titan_clip_1291_000588_movie_t-2.jpg", "titan_clip_1291_000588_movie_t-1.jpg", "titan_clip_1291_000588_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "An urban two-way street with one lane each way curves gently right between mid-rise buildings; the asphalt looks smooth and dry and traffic is light. On the left edge close ahead, a white van is parked at the curb while a person unloads beside its rear, narrowing the usable lane. Slightly farther ahead in the same direction, a small flatbed truck is stopped near the left curb beyond the van. In the opposing lane to the right of the centerline, a silver van approaches around the bend with another vehicle farther back, occupying the oncoming lane as the ego vehicle nears the roadside stops.", "hazard_reasoning": "There is a white van parked on the left side of the road, because it is being unloaded. The unloading activity may cause sudden obstacles or pedestrian movements into the lane, so the driver should carefully manoeuvre around the van."}
{"id": "train_01633", "split": "train", "clip_key": "titan_clip_516_000126_movie", "source": {"subset": "titan", "scenario": "clip_516", "frame": "000126"}, "frames": ["titan_clip_516_000126_movie_t-3.jpg", "titan_clip_516_000126_movie_t-2.jpg", "titan_clip_516_000126_movie_t-1.jpg", "titan_clip_516_000126_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the vehicle", "environment_perception": "A narrow urban street with a single lane and sidewalks on both sides has smooth pavement and light traffic with no moving vehicles ahead. A black hatchback is parked along the left curb intruding into the ego lane, constraining the path. On the right sidewalk, several pedestrians wait outside a storefront near queue barriers while a uniformed staff member stands by the entrance, all close to the curb but off the roadway. Farther ahead, temporary cones and barricades surround a covered object in the roadway, narrowing the lane. Large road markings indicate a 30 zone speed limit.", "hazard_reasoning": "There is a black hatchback parked in the ego lane, on the left side of the road, because there is no parking spot. This parked hatchback blocks the driving lane, so you should manoeuvre carefully around it to avoid a collision."}
{"id": "train_01634", "split": "train", "clip_key": "titan_clip_1376_000240_movie", "source": {"subset": "titan", "scenario": "clip_1376", "frame": "000240"}, "frames": ["titan_clip_1376_000240_movie_t-3.jpg", "titan_clip_1376_000240_movie_t-2.jpg", "titan_clip_1376_000240_movie_t-1.jpg", "titan_clip_1376_000240_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban intersection with narrow two-lane roads, no median, and smooth pavement; traffic is very light. The ego vehicle approaches a zebra crossing at the mouth of a side street to the right. Two pedestrians on the right step onto the crosswalk and walk across the side street ahead, potentially in the path of right-turning traffic. A man stands on the left sidewalk beside a parked scooter, remaining stationary and not affecting the roadway. A posted 30 speed-limit sign is visible on the corner by a building under scaffolding that stays on the sidewalk.", "hazard_reasoning": "There are no moving vehicles or visible obstacles; proceed carefully and stay alert."}
{"id": "train_01635", "split": "train", "clip_key": "titan_clip_727_000480_movie", "source": {"subset": "titan", "scenario": "clip_727", "frame": "000480"}, "frames": ["titan_clip_727_000480_movie_t-3.jpg", "titan_clip_727_000480_movie_t-2.jpg", "titan_clip_727_000480_movie_t-1.jpg", "titan_clip_727_000480_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of parked sedan ahead", "environment_perception": "An urban two-way street with narrow lanes, smooth pavement, and no median shows light traffic. An oncoming black car passes close along the right side, reducing clearance. Ahead near the intersection, a black sedan is parked on the right side, tightening the approach. Two pedestrians on the left shoulder beside the guardrail, one lingering and one walking away, stay close to the curb and could step into the lane. Bicycles are parked along the right-side building frontage.", "hazard_reasoning": "There is a black sedan parked on the right side of the intersection. The parked vehicle may hide oncoming traffic or pedestrians beyond the intersection, so the driver should be cautious under this situation."}
{"id": "train_01636", "split": "train", "clip_key": "titan_clip_639_000168_movie", "source": {"subset": "titan", "scenario": "clip_639", "frame": "000168"}, "frames": ["titan_clip_639_000168_movie_t-3.jpg", "titan_clip_639_000168_movie_t-2.jpg", "titan_clip_639_000168_movie_t-1.jpg", "titan_clip_639_000168_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban neighborhood street with a single narrow lane and no centerline runs between buildings; a white rail separates the roadway from a bicycle-parking area on the right, the asphalt is smooth, and traffic is light. Ahead near the right edge, a person wearing a black T-shirt and blue pants walks toward the ego vehicle along the roadway, and may enter the ego lane. Farther ahead by the storefront on the left, another pedestrian pauses and then walks away along the curb with minimal impact. A scooter is parked in a marked bay at the left curb and numerous bicycles are parked behind the right-hand rail, adding roadside clutter. No signals or speed signs are visible.", "hazard_reasoning": "There is a lady wearing a black T-shirt with blue pant, walking toward the ego car. The pedestrian is moving into the vehicle's path under a red light, so the driver should slow down to maintain safe distance and prepare to stop."}
{"id": "train_01637", "split": "train", "clip_key": "2020-0214-102601_001513_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "001513"}, "frames": ["2020-0214-102601_001513_movie_t-3.jpg", "2020-0214-102601_001513_movie_t-2.jpg", "2020-0214-102601_001513_movie_t-1.jpg", "2020-0214-102601_001513_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with a single lane in each direction and a centerline runs past low-rise apartments; the ego-vehicle sits in the left lane on smooth pavement and traffic is light with no moving vehicles. Ahead, a driveway across the sidewalk breaks the roadside barrier, but no pedestrians or cyclists approach or cross. A scooter and plants are parked by the storefront, and a vending machine kiosk sits behind the rail on the right, all outside the roadway. No traffic signals or speed signs are visible, and nothing changes materially.", "hazard_reasoning": "There are no visible hazards or risks in this scenario, so no immediate warning is necessary."}
{"id": "train_01638", "split": "train", "clip_key": "2020-0131-103016_025591_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "025591"}, "frames": ["2020-0131-103016_025591_movie_t-3.jpg", "2020-0131-103016_025591_movie_t-2.jpg", "2020-0131-103016_025591_movie_t-1.jpg", "2020-0131-103016_025591_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A suburban two-way road with a raised median to the right and dry, smooth pavement carries light traffic near a signalized intersection. A silver box truck directly ahead in the ego lane is stopped at a red light, holding the ego vehicle at a standstill. An oncoming car moves past on the far side of the median to the right, continuing straight without interaction. Two pedestrians appear near the intersection on the right sidewalk, walking along the curb and not entering the roadway. A blue 40 sign indicates the posted speed limit.", "hazard_reasoning": "There is a silver truck stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid rear-ending the stationary truck at the red light."}
{"id": "train_01639", "split": "train", "clip_key": "titan_clip_37_000174_movie", "source": {"subset": "titan", "scenario": "clip_37", "frame": "000174"}, "frames": ["titan_clip_37_000174_movie_t-3.jpg", "titan_clip_37_000174_movie_t-2.jpg", "titan_clip_37_000174_movie_t-1.jpg", "titan_clip_37_000174_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow lane and block-paved surface, no divider, is lined by storefronts; motor traffic is light but foot traffic is heavy, so movement is slow. A small silver van proceeds ahead in the same lane at low speed, occupying the center and limiting headway. Pedestrians on the left edge walk close to the carriageway and some step into the lane near the ego path. On the right, a pedestrian wearing a cap and carrying a handbag stands at the road edge while looking at a cell phone because an obstacle on their right narrows the sidewalk, positioning them close to the lane.", "hazard_reasoning": "There is a pedestrian wearing a cap, carrying a handbag, looking into a cell phone, and standing on the right side of the road because of the obstacle on their right. The driver should slow down to avoid a potential collision with the pedestrian who may step into the traffic unexpectedly."}
{"id": "train_01640", "split": "train", "clip_key": "2020-0203-154554_002760_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "002760"}, "frames": ["2020-0203-154554_002760_movie_t-3.jpg", "2020-0203-154554_002760_movie_t-2.jpg", "2020-0203-154554_002760_movie_t-1.jpg", "2020-0203-154554_002760_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop before the stopped taxi ahead.", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection; lanes are paint-separated with no physical median, the pavement looks smooth, and traffic is light and mostly stationary at the red light. A black taxi directly ahead in the ego lane is stopped for the red signal, holding the ego vehicle behind. A silver minivan slightly ahead in the adjacent right lane is also stopped at the intersection. Pedestrians gather on the left sidewalk near the crosswalk and rows of parked bicycles, waiting to cross while remaining off the lane. The overhead signal facing the approach shows a steady red.", "hazard_reasoning": "There is a black taxi stopped in front of the ego car in the ego lane, because of a red traffic light ahead. Driver should stop to avoid a rear-end collision with the stopped taxi."}
{"id": "train_01641", "split": "train", "clip_key": "titan_clip_272_000378_movie", "source": {"subset": "titan", "scenario": "clip_272", "frame": "000378"}, "frames": ["titan_clip_272_000378_movie_t-3.jpg", "titan_clip_272_000378_movie_t-2.jpg", "titan_clip_272_000378_movie_t-1.jpg", "titan_clip_272_000378_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "A narrow urban street lined with shops forms a single undivided lane with smooth pavement and a painted 30 speed marking, and traffic is light with no oncoming vehicles visible. A white box truck is stopped ahead toward the right side of the lane because it is being unloaded, partly blocking the ego path and constraining progress. A worker stands on the lowered rear liftgate and moves metal roll cages between the truck and the curb, at times extending into the lane and potentially entering the ego vehicle's path. On the left, pedestrians walk along the storefronts, with one close to the curb edging into the roadway while proceeding forward beside the lane. Additional carts are staged at the right edge, further narrowing the passage.", "hazard_reasoning": "There is a white truck stopped, in front of the ego car, towards the right side of the ego lane, because it is being unloaded. Carefully manoeuvre around the truck to avoid hitting its open rear door and ensure safe passage."}
{"id": "train_01642", "split": "train", "clip_key": "2020-0205-152530_026597_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "026597"}, "frames": ["2020-0205-152530_026597_movie_t-3.jpg", "2020-0205-152530_026597_movie_t-2.jpg", "2020-0205-152530_026597_movie_t-1.jpg", "2020-0205-152530_026597_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, with smooth pavement and moderate traffic moving through a signalized junction. Ahead in the ego lane, a gray van proceeds straight under a green light, setting the pace for the ego vehicle. To its left, a silver sedan slightly ahead continues straight at similar speed. On the right, a black car advances in the adjacent lane, pulling level with the van. Farther right near the curb, a white delivery truck rolls forward slowly beside the intersection. Overhead signals show green for the through lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01643", "split": "train", "clip_key": "2020-0225-102455_042274_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "042274"}, "frames": ["2020-0225-102455_042274_movie_t-3.jpg", "2020-0225-102455_042274_movie_t-2.jpg", "2020-0225-102455_042274_movie_t-1.jpg", "2020-0225-102455_042274_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane one-way street runs between offices and trees, with a guardrail and shrubs on the right; the pavement is smooth and traffic moves slowly. A white box truck is directly ahead in the ego lane, slowing while moving away from the ego car and setting the pace. In the adjacent left lane a black sedan travels parallel just behind the truck, edging forward within its lane. Farther ahead in the left lane another vehicle continues straight beyond the truck without affecting the ego path. Large white pavement markings with Japanese lane-restriction text and the time 7:30-9 are visible in the left lane.", "hazard_reasoning": "There is a white truck slowing in the ego lane, moving away from the ego car. The truck's reduced speed ahead may require the driver to slow down to maintain a safe distance and prevent a collision."}
{"id": "train_01644", "split": "train", "clip_key": "titan_clip_943_000558_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_943_000558_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_943_000558_movie_t-3_augB1.jpg", "titan_clip_943_000558_movie_t-2_augB1.jpg", "titan_clip_943_000558_movie_t-1_augB1.jpg", "titan_clip_943_000558_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way roadway, no center divider, and smooth pavement shows light vehicle traffic while the lane bends slightly right, limiting forward view. Ahead at the intersection, a pedestrian in a black shirt crosses and walks in the middle of the roadway, directly in the vehicle's path and likely to govern its pace. On the left curbside close to the camera, another pedestrian walks toward the vehicle and may edge into the lane. Farther ahead near the bend, a small group of pedestrians crosses from right to left, briefly occupying the travel lane. Storefronts and a parked bicycle tighten the margins.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, crossing the street, and walking in the middle of the intersection. The driver should slow down because the pedestrian is directly in the vehicle's path within the intersection."}
{"id": "train_01645", "split": "train", "clip_key": "titan_clip_63_000144_movie", "source": {"subset": "titan", "scenario": "clip_63", "frame": "000144"}, "frames": ["titan_clip_63_000144_movie_t-3.jpg", "titan_clip_63_000144_movie_t-2.jpg", "titan_clip_63_000144_movie_t-1.jpg", "titan_clip_63_000144_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "An urban side street with buildings tight on both sides forms a narrow two-way road without a centerline; the pavement is smooth and traffic is light as the vehicle proceeds forward. On the right ahead, a large construction truck is parked along the curb and partly occupies the roadway, narrowing the usable lane and constraining the pace. A row of orange traffic cones on the right side of the road, including one near the camera, cordons off the work area. A pedestrian is visible far ahead near the left edge, walking away and not entering the vehicle's path. No oncoming vehicles are present.", "hazard_reasoning": "There is a traffic cone on the right side of the road. It marks a lane obstruction beside the parked truck, so the driver should manoeuvre carefully around it."}
{"id": "train_01646", "split": "train", "clip_key": "titan_clip_217_000594_movie", "source": {"subset": "titan", "scenario": "clip_217", "frame": "000594"}, "frames": ["titan_clip_217_000594_movie_t-3.jpg", "titan_clip_217_000594_movie_t-2.jpg", "titan_clip_217_000594_movie_t-1.jpg", "titan_clip_217_000594_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "An urban shopping street with a single narrow lane and no median is ahead; the surface changes to brick past the zebra crossing and traffic is light. A white van is far ahead in the ego lane moving away slowly, effectively setting the pace on the confined roadway. A pedestrian wearing a white shirt and gray pants walks along the right edge toward the ego car, close to the curb and potentially edging into the lane. Another pedestrian at the near right steps onto the zebra crossing to traverse the ego lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and gray pants, walking along the right side of the road, toward the ego car. The pedestrian may step onto the roadway, so the driver should be cautious to avoid a collision."}
{"id": "train_01647", "split": "train", "clip_key": "2020-0127-132751_060219_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "060219"}, "frames": ["2020-0127-132751_060219_movie_t-3.jpg", "2020-0127-132751_060219_movie_t-2.jpg", "2020-0127-132751_060219_movie_t-1.jpg", "2020-0127-132751_060219_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of black van cutting in", "environment_perception": "An urban arterial with two same-direction lanes and double solid centerlines runs straight on smooth pavement, with moderate, steady traffic. Ahead-left, a black van moves right from the left lane and cuts into the ego lane in front of the ego-car, narrowing the gap as it merges. Directly ahead, a silver hatchback in the ego lane proceeds at a steady pace, constraining the ego-car's speed. Farther ahead, a box truck continues in the same lane, governing the flow for vehicles behind. No prominent signals are visible and no obstacles or work zones appear.", "hazard_reasoning": "There is a black van, cutting in, in front of the ego-car, moving from the left lane to the ego lane. The black van's sudden lane change ahead could force the driver to brake or steer abruptly, so the driver should be aware of its movement."}
{"id": "train_01648", "split": "train", "clip_key": "2020-0206-142535_017775_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "017775"}, "frames": ["2020-0206-142535_017775_movie_t-3.jpg", "2020-0206-142535_017775_movie_t-2.jpg", "2020-0206-142535_017775_movie_t-1.jpg", "2020-0206-142535_017775_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial carries traffic on dry, well-kept pavement; three lanes run in the ego direction, with a metal barrier median on the right separating oncoming flow. Traffic is moderate to heavy with a slow-moving queue ahead. A gray hatchback directly ahead in the ego lane slows because of congestion and constrains the ego car's pace. Farther ahead slightly left, a tall white box truck in the middle lane creeps forward and partly obscures the view of upstream traffic. To the left of the ego, a black SUV travels parallel and slightly ahead in the adjacent lane, limiting room to merge.", "hazard_reasoning": "There is a gray hatchback slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to reduced speeds caused by congestion."}
{"id": "train_01649", "split": "train", "clip_key": "2020-0226-140503_104029_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "104029"}, "frames": ["2020-0226-140503_104029_movie_t-3.jpg", "2020-0226-140503_104029_movie_t-2.jpg", "2020-0226-140503_104029_movie_t-1.jpg", "2020-0226-140503_104029_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane road with one lane each way runs past small shops and apartments; the asphalt is in good condition and traffic is light. A silver box truck is stopped directly ahead in the ego lane, constraining the ego vehicle's movement. No oncoming vehicles are visible nearby in the opposite lane. A white guardrail lines the right side above a narrow shoulder while a curb and storefronts border the left, and there are no salient signals or signs in view.", "hazard_reasoning": "There is a silver truck stopped in front of the ego car in the ego lane. As the truck is stationary in the driving lane, the driver must stop to prevent a rear-end collision."}
{"id": "train_01650", "split": "train", "clip_key": "2020-0129-144857_029696_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "029696"}, "frames": ["2020-0129-144857_029696_movie_t-3.jpg", "2020-0129-144857_029696_movie_t-2.jpg", "2020-0129-144857_029696_movie_t-1.jpg", "2020-0129-144857_029696_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-ending the stopped vehicle.", "environment_perception": "An urban multilane road runs under an elevated structure, with three same-direction lanes and a bollard-separated right edge; the pavement looks dry and traffic is queued at a signal. A black SUV is stopped directly ahead in the ego lane because the light ahead is red. A white box truck in the lane to the left is also stopped beside the SUV, limiting any chance to change lanes. Farther ahead in the same lane, a large truck waits, extending the queue and obscuring the view beyond. The overhead signals show red, and a guardrail lines the right side.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The black SUV's stop indicates a potential collision risk if the driver does not slow down and stop in time."}
{"id": "train_01651", "split": "train", "clip_key": "2020-0228-150133_067244_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "067244"}, "frames": ["2020-0228-150133_067244_movie_t-3.jpg", "2020-0228-150133_067244_movie_t-2.jpg", "2020-0228-150133_067244_movie_t-1.jpg", "2020-0228-150133_067244_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban multi-lane arterial with no physical median approaches a wide signalized intersection; the pavement looks good and traffic is heavy with slow queues. A black sedan directly ahead in the ego lane slows because of congestion and holds the ego vehicle's pace. A small white van just ahead to the left in the adjacent lane also decelerates toward the crosswalk, remaining alongside the ego car. A dark minivan in the right adjacent lane creeps forward beside the ego vehicle within its lane. A motor scooter near the left curb waits at the stop line by the intersection. Opposing traffic queues across the junction in their lanes under overhead signals.", "hazard_reasoning": "There is a black sedan slowing down ahead of the ego-car, in the ego lane, because of traffic congestion ahead. The black sedan's slowdown indicates heavier congestion ahead, so slowing down helps maintain a safe following distance and avoid a collision."}
{"id": "train_01652", "split": "train", "clip_key": "2020-0207-101955_111865_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "111865"}, "frames": ["2020-0207-101955_111865_movie_t-3.jpg", "2020-0207-101955_111865_movie_t-2.jpg", "2020-0207-101955_111865_movie_t-1.jpg", "2020-0207-101955_111865_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with two same-direction lanes and a bollard-separated left margin; the pavement is dry and smooth, and traffic is heavy and slow. A blue sedan directly ahead in the ego lane slows to a crawl in congestion, limiting the ego vehicle's pace. To the right, a white microvan in the adjacent lane creeps forward roughly alongside while staying in its lane. Along the far left beyond the bollards, several large trucks queue at low speed or stand still, forming a continuous barrier that reduces lateral space. Overhead blue direction signs are visible.", "hazard_reasoning": "There is a blue sedan slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should reduce speed to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01653", "split": "train", "clip_key": "2020-0226-140503_085811_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "085811"}, "frames": ["2020-0226-140503_085811_movie_t-3.jpg", "2020-0226-140503_085811_movie_t-2.jpg", "2020-0226-140503_085811_movie_t-1.jpg", "2020-0226-140503_085811_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban arterial with multiple lanes in each direction has smooth pavement, painted center lines, and no physical median, and traffic moves slowly toward a large signalized intersection. Oncoming traffic flows in the far-right lanes across the painted divider while same-direction lanes are packed. A white hatchback directly ahead in the ego lane slows and creeps because of congestion ahead. A boxy white van in the adjacent left lane advances at a similar pace beside the ego vehicle, limiting room to merge. Farther ahead-left, a concrete mixer truck inches forward within the queue, adding to the bottleneck. Overhead signals and broad crosswalks define the junction.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and prevent a potential rear-end collision."}
{"id": "train_01654", "split": "train", "clip_key": "titan_clip_47_000150_movie", "source": {"subset": "titan", "scenario": "clip_47", "frame": "000150"}, "frames": ["titan_clip_47_000150_movie_t-3.jpg", "titan_clip_47_000150_movie_t-2.jpg", "titan_clip_47_000150_movie_t-1.jpg", "titan_clip_47_000150_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrians on the right side", "environment_perception": "A narrow urban commercial street with a single lane and green painted shoulders runs straight ahead; the pavement is smooth, there is no divider, and traffic is light with no moving vehicles. On the right side, two pedestrians wearing gray shirts and black pants walk toward the ego car along the shoulder and may step into the travel lane. On the left edge near a storefront, a man stands close to the lane beside a row of cones, reducing clearance. Farther ahead, another pedestrian walks away near the left edge. Orange cones and shop signs line both sides, slightly constricting the corridor.", "hazard_reasoning": "There are two pedestrians wearing gray shirts and black pants, walking on the right side of the road, towards the ego car. The pedestrians may step into the lane unexpectedly, so the driver should anticipate their movement and remain vigilant."}
{"id": "train_01655", "split": "train", "clip_key": "titan_clip_132_000294_movie", "source": {"subset": "titan", "scenario": "clip_132", "frame": "000294"}, "frames": ["titan_clip_132_000294_movie_t-3.jpg", "titan_clip_132_000294_movie_t-2.jpg", "titan_clip_132_000294_movie_t-1.jpg", "titan_clip_132_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "An urban commercial side street with a single narrow lane and brick pavement runs straight between tall buildings, with light traffic and no median. Ahead, a pedestrian wearing a black vest and brown pants walks in the middle of the road away from the ego vehicle to pass a black minivan stopped at the right curb that encroaches into the lane, so the walker remains in the ego path for several steps. The minivan is stationary and constrains the available space. On the left, a woman under an umbrella walks forward along the sidewalk near the curb. An orange traffic cone stands by the right curb next to the minivan, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a black vest and brown pants, walking in the middle of the road, away from the ego car, because of the parked vehicle. Stop immediately to avoid hitting the pedestrian walking in your lane."}
{"id": "train_01656", "split": "train", "clip_key": "titan_clip_772_000396_movie", "source": {"subset": "titan", "scenario": "clip_772", "frame": "000396"}, "frames": ["titan_clip_772_000396_movie_t-3.jpg", "titan_clip_772_000396_movie_t-2.jpg", "titan_clip_772_000396_movie_t-1.jpg", "titan_clip_772_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street with a narrow two-way roadway has worn pavement, no center divider, and no clear sidewalks, so traffic is slow and mixed with pedestrians. A backpacked pedestrian in a black T-shirt and gray shorts walks in the middle of the road toward the ego vehicle, potentially entering its path because there is no sidewalk. Ahead left near the storefront, another pedestrian steps from the doorway and crosses toward the roadway center, edging into the ego lane. On the right edge, a backpacked man walks toward the camera along the curb, narrowing the available space for the vehicle. No other vehicles or signals are prominent.", "hazard_reasoning": "There is a pedestrian carrying a backpack, wearing a black t-shirt and gray shorts, walking in the middle of the road, towards the ego car, because there is no sidewalk. The driver should slow down because the pedestrian is directly in the vehicle's path and could step unpredictably."}
{"id": "train_01657", "split": "train", "clip_key": "2020-0228-150133_063724_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-150133_063724_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-150133_063724_movie_t-3_augB1.jpg", "2020-0228-150133_063724_movie_t-2_augB1.jpg", "2020-0228-150133_063724_movie_t-1_augB1.jpg", "2020-0228-150133_063724_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with one lane in each direction runs straight, separated by double white lines acting as a painted median; the pavement looks smooth and traffic is heavy and slow. Directly ahead in the ego lane, a black sedan slows because of traffic congestion ahead, constraining the ego car's pace. Farther ahead in the same lane near an overhead gantry, a box truck creeps in the queue, contributing to the slowdown and forming a moving bottleneck. To the right of the median, oncoming cars, including a white SUV, proceed steadily toward the camera without conflicting with the ego lane.", "hazard_reasoning": "There is a black sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance as the sedan decelerates due to congestion."}
{"id": "train_01658", "split": "train", "clip_key": "2020-0226-140503_044005_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "044005"}, "frames": ["2020-0226-140503_044005_movie_t-3.jpg", "2020-0226-140503_044005_movie_t-2.jpg", "2020-0226-140503_044005_movie_t-1.jpg", "2020-0226-140503_044005_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming white van.", "environment_perception": "An urban multi-lane intersection on a two-way road with left-hand traffic comes into view, with no median and dry, well-marked pavement; traffic appears moderate. Ahead in the ego lane, a Coca-Cola box truck proceeds through the intersection and limits the ego vehicle's pace. On the right side of the intersection, a white van drives toward the ego car in the oncoming lane, continuing past the ego's path. Farther to the right, a small van and a scooter advance slowly from the side street behind the first van. A traffic signal visible on the left shows green for the ego's approach.", "hazard_reasoning": "There is a white van on the right side of the intersection driving towards the ego car. The van may enter our path, risking a collision if we proceed without yielding."}
{"id": "train_01659", "split": "train", "clip_key": "2020-0205-103411_008956_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "008956"}, "frames": ["2020-0205-103411_008956_movie_t-3.jpg", "2020-0205-103411_008956_movie_t-2.jpg", "2020-0205-103411_008956_movie_t-1.jpg", "2020-0205-103411_008956_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for crossing pedestrians", "environment_perception": "An urban multi-lane two-way intersection with no median and smooth asphalt is seen from a stopped car; traffic is light and momentarily halted for a red signal. A group of pedestrians crosses the zebra crossing directly ahead from both sides, some walking and some jogging, occupying the ego lane because the light is red, so the ego waits. A white van is paused on the left near the corner by the cross street, stopped at the line and yielding to the pedestrians, with no immediate movement toward the ego lane. The overhead traffic lights facing the ego direction display red.", "hazard_reasoning": "There is a group of pedestrians crossing the street at the pedestrian crossing in front of the ego car, because it is a red light. The driver must stop to allow pedestrians to cross safely at the red light."}
{"id": "train_01660", "split": "train", "clip_key": "titan_clip_538_000576_movie", "source": {"subset": "titan", "scenario": "clip_538", "frame": "000576"}, "frames": ["titan_clip_538_000576_movie_t-3.jpg", "titan_clip_538_000576_movie_t-2.jpg", "titan_clip_538_000576_movie_t-1.jpg", "titan_clip_538_000576_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban side street with a single narrow two-way lane and no centerline runs between close buildings; the dry asphalt appears in fair condition, and traffic is light with no vehicles visible. A pedestrian ahead on the left edge of the lane walks away from the camera along the white edge line, close to the travel path. The remainder of the lane ahead looks clear of other road users. A yellow school-zone warning sign is posted on a pole at the left corner. Metal railings and a curb line the right side, narrowing the usable roadway.", "hazard_reasoning": "There are no visible hazards or vehicles on the road, so the driver can continue without taking additional precautions."}
{"id": "train_01661", "split": "train", "clip_key": "2020-0226-101332_002288_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "002288"}, "frames": ["2020-0226-101332_002288_movie_t-3.jpg", "2020-0226-101332_002288_movie_t-2.jpg", "2020-0226-101332_002288_movie_t-1.jpg", "2020-0226-101332_002288_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped hatchback ahead", "environment_perception": "An urban two-way arterial curves left toward a signalized crosswalk, with no physical median and good pavement; the rightmost same-direction lane tapers, and traffic is moderate. Ahead in the same direction, a dark van continues through the junction and loosely sets the pace. On the ego vehicle's right, a small white kei truck proceeds in the merging lane and may move left into the ego lane near the taper. Farther right, a large box truck advances alongside in the same merging lane, partially blocking the view toward the curb. Oncoming cars travel in the opposing lane to the right and pass through the intersection without interfering with the ego vehicle's path.", "hazard_reasoning": "There is a black hatchback stopped on the left side of the road. This stationary vehicle in your lane could force a sudden lane change or braking, so be aware."}
{"id": "train_01662", "split": "train", "clip_key": "2020-0204-150838_001614_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "001614"}, "frames": ["2020-0204-150838_001614_movie_t-3.jpg", "2020-0204-150838_001614_movie_t-2.jpg", "2020-0204-150838_001614_movie_t-1.jpg", "2020-0204-150838_001614_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with three same-direction lanes has smooth pavement and moderate traffic queuing toward a signalized intersection as the flow slows to a stop under a red light. A black sedan directly ahead in the ego lane is stopped for the red signal, constraining the ego vehicle's pace. In the adjacent right lane, a small black truck slows and comes to a stop slightly ahead, remaining parallel to the ego car. In the far-left lane, a blue refuse truck alongside creeps forward within its lane as the queue forms. Overhead traffic signals show red, and temporary barriers line the right shoulder beside a building work area.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver should stop to avoid a collision with the stationary vehicle ahead."}
{"id": "train_01663", "split": "train", "clip_key": "titan_clip_1140_000072_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1140_000072_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1140_000072_movie_t-3_augB1.jpg", "titan_clip_1140_000072_movie_t-2_augB1.jpg", "titan_clip_1140_000072_movie_t-1_augB1.jpg", "titan_clip_1140_000072_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban residential street without a centerline runs straight ahead, bordered by a high wall on the left and apartment fa?ades on the right; the dry asphalt shows some patching and shadows. Traffic is light, with no vehicles ahead or oncoming. Far ahead in the middle of the roadway, a pedestrian in black pants and a white shirt walks away from the ego vehicle along the lane, potentially occupying the ego path and affecting the vehicle's approach. A few orange posts line the left edge near the wall, and a small white roadside barrier appears on the right, but no other notable obstacles are present.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, walking in the middle of the road, away from the ego car. The driver should carefully manoeuvre around this pedestrian to avoid a collision."}
{"id": "train_01664", "split": "train", "clip_key": "titan_clip_771_000150_movie", "source": {"subset": "titan", "scenario": "clip_771", "frame": "000150"}, "frames": ["titan_clip_771_000150_movie_t-3.jpg", "titan_clip_771_000150_movie_t-2.jpg", "titan_clip_771_000150_movie_t-1.jpg", "titan_clip_771_000150_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "A narrow urban shopping street with a single lane and no divider has smooth pavement and light, slow traffic. A white van is parked on the left in the ego lane in a marked parking space, narrowing the drivable space. Ahead in the lane, a pedestrian walks away near the center of the roadway, keeping the ego vehicle's pace slow. On the right edge by the storefronts, two pedestrians stroll along the curb and drift slightly toward the roadway, so they may enter the ego lane. Farther ahead along the left curb, a dark car stands stopped, adding another roadside obstruction.", "hazard_reasoning": "There is a white van parked on the left side of the street, in the ego lane, in a designated parking spot. The driver should carefully manoeuvre around this van to avoid collision and maintain safe passage on the narrow street."}
{"id": "train_01665", "split": "train", "clip_key": "2020-0205-152530_033454_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "033454"}, "frames": ["2020-0205-152530_033454_movie_t-3.jpg", "2020-0205-152530_033454_movie_t-2.jpg", "2020-0205-152530_033454_movie_t-1.jpg", "2020-0205-152530_033454_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided boulevard with three same-direction lanes and a landscaped median is visible, the pavement smooth and traffic moving at a moderate, steady pace. The ego car travels in the left-side carriageway typical of Japan. A white box truck is directly ahead in the ego lane, proceeding straight and setting the ego vehicle's pace. To the left, a white minivan runs slightly ahead in the adjacent lane, continuing forward alongside without signaling. To the right, a small white van in the next lane moves ahead at a similar speed, remaining parallel to the truck. Across the median, opposing traffic flows continuously in the far carriageway, and overhead gantries display direction boards.", "hazard_reasoning": "There is a white truck driving in the ego lane, because of the green traffic light, in front of the ego car. The driver should remain cautious as the truck's movement and the traffic signal status could change unexpectedly."}
{"id": "train_01666", "split": "train", "clip_key": "titan_clip_124_000342_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_124_000342_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_124_000342_movie_t-3_augB1.jpg", "titan_clip_124_000342_movie_t-2_augB1.jpg", "titan_clip_124_000342_movie_t-1_augB1.jpg", "titan_clip_124_000342_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban downtown scene shows a narrow two-way street approaching a four-way intersection with zebra crosswalks, no visible signal, and light traffic; pavement is clean. A pedestrian wearing a black skirt is directly ahead in the middle of the intersection, crossing toward the left side across the ego vehicle's path, constraining its approach. On the right curb, a person holding an umbrella waits at the crosswalk and could step out into the lane. Across the junction, a small truck moves along the cross street from left to right at low speed, remaining on that street and posing no immediate conflict.", "hazard_reasoning": "There is a pedestrian wearing a black skirt, crossing the street, and walking in the middle of the intersection, to the left side. The driver should slow down to safely yield to the pedestrian and prevent a collision."}
{"id": "train_01667", "split": "train", "clip_key": "titan_clip_322_000330_movie", "source": {"subset": "titan", "scenario": "clip_322", "frame": "000330"}, "frames": ["titan_clip_322_000330_movie_t-3.jpg", "titan_clip_322_000330_movie_t-2.jpg", "titan_clip_322_000330_movie_t-1.jpg", "titan_clip_322_000330_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "An urban alley with a single narrow shared lane paved in brick runs between storefronts; there is no center line or median, and traffic is very light with no moving vehicles. On the left ahead, a pedestrian in a black shirt and white pants walks away from the ego car along the curb, remaining close to the edge but potentially entering the lane. Farther ahead near the end of the lane, a few pedestrians stand by the shops and hover near the roadway, which could affect the ego car's path. A large Japanese stop marking is painted on the pavement ahead. Several bicycles are parked along the right side, with one near the curb narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and white pants, walking on the left side of the road, away from the ego car. The pedestrian's proximity to the drivable path and potential for changing direction unpredictably could lead to a collision, so the driver should be cautious."}
{"id": "train_01668", "split": "train", "clip_key": "2020-0212-102546_053145_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "053145"}, "frames": ["2020-0212-102546_053145_movie_t-3.jpg", "2020-0212-102546_053145_movie_t-2.jpg", "2020-0212-102546_053145_movie_t-1.jpg", "2020-0212-102546_053145_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial with a low planted median and dry, slightly worn pavement runs straight between midrise buildings, with moderate traffic approaching a signalized intersection. A silver van ahead in the ego lane continues straight at a steady speed, constraining the ego vehicle's pace. To the left, a green and white city bus in the adjacent same-direction lane travels parallel toward the junction at similar speed. On the opposite side of the median to the right, a black sedan moves toward the camera as oncoming traffic and passes without conflict. Overhead traffic lights are visible above the intersection ahead.", "hazard_reasoning": "The road is clear with no immediate hazards, so the driver can proceed normally."}
{"id": "train_01669", "split": "train", "clip_key": "titan_clip_205_000210_movie", "source": {"subset": "titan", "scenario": "clip_205", "frame": "000210"}, "frames": ["titan_clip_205_000210_movie_t-3.jpg", "titan_clip_205_000210_movie_t-2.jpg", "titan_clip_205_000210_movie_t-1.jpg", "titan_clip_205_000210_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians pushing luggage", "environment_perception": "An urban shopping street with a single narrow lane and smooth block-pattern pavement runs between storefronts, with bollards edging the sidewalks; there is no visible vehicle traffic and pedestrian flow is heavy, slowing progress. A loose group of pedestrians ahead occupies the ego lane while walking toward the camera at a slow pace, constraining the vehicle's path. On the left edge, two pedestrians push a wheeled suitcase toward the ego vehicle, staying in the roadway because a person stands on the sidewalk, and they continue close to the ego path. Slightly left of center, a person in a wheelchair moves slowly away from the camera along the lane, sharing the space and further limiting passing room. No signals or posted speeds are visible.", "hazard_reasoning": "There are two pedestrians pushing a piece of luggage and walking on the left side of the road, towards the ego car because there is a person standing on the sidewalk. The driver should be aware of these pedestrians pushing luggage as they may change direction unexpectedly."}
{"id": "train_01670", "split": "train", "clip_key": "titan_clip_986_000420_movie", "source": {"subset": "titan", "scenario": "clip_986", "frame": "000420"}, "frames": ["titan_clip_986_000420_movie_t-3.jpg", "titan_clip_986_000420_movie_t-2.jpg", "titan_clip_986_000420_movie_t-1.jpg", "titan_clip_986_000420_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian on the road", "environment_perception": "An urban neighborhood scene shows the ego traveling in the left lane of a narrow two-way road with no median or sidewalks, smooth pavement, and very light traffic. On the right edge ahead, a pedestrian in a blue shirt and black pants walks toward the ego along the roadside because there is no sidewalk, and may encroach on the ego lane. On the left edge farther ahead, another pedestrian walks away along the curb, remaining near the side and less relevant to the ego's path. No moving vehicles are visible; parked bicycles and a silver car recessed in a right-side driveway stay stationary near the roadway, slightly reducing lateral clearance.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, walking on the right side pf the road, toward the ego car, because there is no sidewalk. The driver should be aware because the pedestrian is walking toward the vehicle on the roadway without a sidewalk, posing a collision risk."}
{"id": "train_01671", "split": "train", "clip_key": "titan_clip_344_000174_movie", "source": {"subset": "titan", "scenario": "clip_344", "frame": "000174"}, "frames": ["titan_clip_344_000174_movie_t-3.jpg", "titan_clip_344_000174_movie_t-2.jpg", "titan_clip_344_000174_movie_t-1.jpg", "titan_clip_344_000174_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van", "environment_perception": "On a narrow urban street paved with interlocking bricks and lacking a median, the ego-vehicle proceeds slowly along a single shared lane amid light traffic. A white van is parked on the right side of the road ahead, narrowing the passage for the ego-vehicle. Two pedestrians on the left walk toward the camera along the roadway edge and drift slightly into the lane, potentially entering the ego path. Farther ahead, several pedestrians cross casually near the van, intermittently blocking the lane and constraining pace. No traffic signals are prominent, and no other moving vehicles are close by.", "hazard_reasoning": "There is a white van parked on the right side of the road. The parked van reduces the available road width, so drivers need to carefully manoeuvre around it to avoid collision."}
{"id": "train_01672", "split": "train", "clip_key": "titan_clip_717_000378_movie", "source": {"subset": "titan", "scenario": "clip_717", "frame": "000378"}, "frames": ["titan_clip_717_000378_movie_t-3.jpg", "titan_clip_717_000378_movie_t-2.jpg", "titan_clip_717_000378_movie_t-1.jpg", "titan_clip_717_000378_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian.", "environment_perception": "An urban side street with closely spaced buildings appears, a narrow two-way road without a center line; the pavement is dry and smooth and traffic is light. At the near left corner, a pedestrian in a blue shirt and black skirt carrying a handbag walks away from the ego vehicle toward the right along the curb and briefly steps into the roadway, potentially entering the ego path. Far ahead near the right curb, a white van sits stopped in the lane and constrains the available width. On the left under the brick building, several black cars are parked in recessed bays and remain stationary.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, black skirt, and carrying a handbag, walking at the right side of the road, away from the ego car. Drivers should be cautious because the pedestrian could step into the roadway from the sidewalk as visibility is limited by the garage door, requiring careful maneuvering to avoid a potential collision."}
{"id": "train_01673", "split": "train", "clip_key": "titan_clip_716_000108_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_716_000108_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_716_000108_movie_t-3_augB1.jpg", "titan_clip_716_000108_movie_t-2_augB1.jpg", "titan_clip_716_000108_movie_t-1_augB1.jpg", "titan_clip_716_000108_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban back street with a single narrow lane and no centerline runs between storefronts; the asphalt is worn but intact, and traffic is light. A cyclist ahead in the middle rides away along the ego vehicle's line at low speed, setting the pace. In the middle of the road slightly farther ahead, a pedestrian in a white shirt and black pants walks toward the ego vehicle, occupying the lane. On the left edge near the cones, another pedestrian stands by a shopfront, remaining near the curb. A blue no-parking sign is posted on the left. Orange cones, parked bicycles, and trash bags along the right narrow the usable roadway.", "hazard_reasoning": "There is a male pedestrian, wearing a white shirt and black pants, walking, in the middle of the road, toward the ego vehicle. The pedestrian's position in the center of the lane creates a risk of collision, so the driver should manoeuvre carefully to avoid hitting him."}
{"id": "train_01674", "split": "train", "clip_key": "2020-0131-135401_051844_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "051844"}, "frames": ["2020-0131-135401_051844_movie_t-3.jpg", "2020-0131-135401_051844_movie_t-2.jpg", "2020-0131-135401_051844_movie_t-1.jpg", "2020-0131-135401_051844_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with a solid centerline and smooth pavement runs between mid-rise buildings, and traffic is moderate, moving steadily toward a signalized intersection ahead. On the left near the curb, a cyclist carrying a backpack rides away from the ego vehicle in the same direction, staying close to the shoulder and near the travel lane. Ahead to the right in the same direction, a dark van proceeds straight at a steady pace alongside the ego path. Farther ahead, several cars form a short queue before the crosswalk, setting the pace for upstream vehicles. A roadside sign indicates no parking from 8-0.", "hazard_reasoning": "There is a cyclist carrying a backpack, cycling on the left side of the road, away from the ego car. The driver should slow down to avoid a potential collision if the cyclist shifts toward the vehicle's path."}
{"id": "train_01675", "split": "train", "clip_key": "titan_clip_1354_000474_movie", "source": {"subset": "titan", "scenario": "clip_1354", "frame": "000474"}, "frames": ["titan_clip_1354_000474_movie_t-3.jpg", "titan_clip_1354_000474_movie_t-2.jpg", "titan_clip_1354_000474_movie_t-1.jpg", "titan_clip_1354_000474_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked minivan", "environment_perception": "A narrow urban two-way residential street with no median and smooth pavement runs past buildings, with light traffic and a row of parked vehicles on the right. Near the camera, a person pushing a bicycle proceeds slowly along the left edge ahead, partly in the lane and likely to constrain the ego vehicle's pace. On the right side, a white minivan is parked at the curb, and along with other parked cars it reduces lateral space but remains stationary. Farther ahead on the right sidewalk, a pedestrian walks along the frontage without entering the road. A large 30 marking is painted on the pavement.", "hazard_reasoning": "There is a white minivan parked on the right side of the road. This parked minivan restricts lane space and may obstruct the driver's path, requiring careful manoeuvring to avoid collision."}
{"id": "train_01676", "split": "train", "clip_key": "2020-0210-155354_003427_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "003427"}, "frames": ["2020-0210-155354_003427_movie_t-3.jpg", "2020-0210-155354_003427_movie_t-2.jpg", "2020-0210-155354_003427_movie_t-1.jpg", "2020-0210-155354_003427_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction runs through a busy shopping area, the pavement smooth and traffic moderate. A white hatchback ahead in the left-side ego lane slows, so the ego car follows its pace. An oncoming black minivan travels steadily in the opposing lane toward the camera but remains well within its lane. Several pedestrians cluster at both sides of the near crosswalk, including two on the left curb edging forward, and they may step into the ego lane.", "hazard_reasoning": "There is a white hatchback slowing, in front of the ego-car, in the ego lane. The slowing vehicle ahead may require you to reduce speed to maintain a safe following distance."}
{"id": "train_01677", "split": "train", "clip_key": "2020-0214-145407_036584_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "036584"}, "frames": ["2020-0214-145407_036584_movie_t-3.jpg", "2020-0214-145407_036584_movie_t-2.jpg", "2020-0214-145407_036584_movie_t-1.jpg", "2020-0214-145407_036584_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck's lane change", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with three same-direction lanes, a right-side curb, smooth pavement, and light to moderate flow. A white box truck directly ahead in the ego lane moves right into the next lane, changing lanes in front of the ego car. A taxi slightly ahead to the left continues straight at a steady pace without encroaching. Farther left, a dark car slows near the side street but stays in its lane. Overhead Japanese direction signs span the roadway.", "hazard_reasoning": "There is a white truck, lane changing in front of the ego car, from the ego lane to the right lane, because of a truck slowing ahead. This sudden merge ahead may require the driver to adjust speed or position, so the driver should be aware to maintain a safe following distance."}
{"id": "train_01678", "split": "train", "clip_key": "titan_clip_1074_000312_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1074_000312_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1074_000312_movie_t-3_augB1.jpg", "titan_clip_1074_000312_movie_t-2_augB1.jpg", "titan_clip_1074_000312_movie_t-1_augB1.jpg", "titan_clip_1074_000312_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian controlling traffic ahead", "environment_perception": "A narrow urban two-way road climbs toward an underpass, with one lane each direction divided by a solid center line and smooth pavement; traffic is light. Ahead on the right, a worker wearing a yellow vest stands at the edge of the roadway and steps into the chevron-marked area while controlling traffic for roadside work, making him relevant to the ego vehicle's path. A white flatbed truck is stopped on the oncoming side facing the ego, partly near the center and narrowing the passage. Farther ahead on the right, a second work truck is stationary by the curb with another worker standing beside the wall.", "hazard_reasoning": "There is a pedestrian wearing a yellow vest, standing on the right side of the road, because they are controlling traffic. The pedestrian could step into the vehicle's path or signal unexpected movements, requiring the driver to be vigilant under this situation."}
{"id": "train_01679", "split": "train", "clip_key": "titan_clip_562_000264_movie", "source": {"subset": "titan", "scenario": "clip_562", "frame": "000264"}, "frames": ["titan_clip_562_000264_movie_t-3.jpg", "titan_clip_562_000264_movie_t-2.jpg", "titan_clip_562_000264_movie_t-1.jpg", "titan_clip_562_000264_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street without a marked centerline has smooth pavement and very light traffic, with no vehicles visible. Two pedestrians ahead on the left, one in a white shirt and one in a yellow shirt, walk away from the ego-vehicle along the edge and could constrain its pace on the tight roadway. A pedestrian on the right proceeds forward on a raised sidewalk parallel to the car and stays clear of the lane. Farther ahead a person lingers near a side-street entrance without moving into the road. Shop signs and short bollards along the left curb slightly encroach into the travel space.", "hazard_reasoning": "There are two pedestrians wearing a white and a yellow shirt, walking on the left side of the road, away from the ego car. They are walking on the roadway and could step into the vehicle's path, so the driver should slow down to maintain a safe distance and react in time."}
{"id": "train_01680", "split": "train", "clip_key": "titan_clip_1253_000444_movie", "source": {"subset": "titan", "scenario": "clip_1253", "frame": "000444"}, "frames": ["titan_clip_1253_000444_movie_t-3.jpg", "titan_clip_1253_000444_movie_t-2.jpg", "titan_clip_1253_000444_movie_t-1.jpg", "titan_clip_1253_000444_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban street lined with shops forms a single undivided lane with dry asphalt and light vehicle flow amid heavy pedestrian presence. A white truck is stopped on the left side in the ego lane, occupying part of the lane and forcing a slow, tight pass. A pedestrian near the truck walks toward the camera in the lane from the left, adjusting pace around the truck and potentially constraining the ego vehicle's path. Farther ahead, a cluster of pedestrians along the left edge queues outside storefronts and intermittently steps into the roadway, which may encroach on the lane. On the right, a person crouches at a storefront by the curb, and crates and barrels near the truck reduce clearance.", "hazard_reasoning": "There is a white truck stopped on the left side of the road in the ego lane. Because the stopped truck blocks the driving lane, the driver must navigate around it safely, requiring careful lateral movement aligned with the suggested maneuver."}
{"id": "train_01681", "split": "train", "clip_key": "2020-0227-104226_033838_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "033838"}, "frames": ["2020-0227-104226_033838_movie_t-3.jpg", "2020-0227-104226_033838_movie_t-2.jpg", "2020-0227-104226_033838_movie_t-1.jpg", "2020-0227-104226_033838_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "A narrow urban street with smooth asphalt and no median runs straight toward a signalized intersection, and traffic is moderate. Directly ahead, a white box truck in the ego lane signals and shifts right, changing into the adjacent right lane in front of the ego. To the right of the ego, a small silver hatchback creeps forward near the lane line, narrowing the gap into which the truck merges. Farther ahead in the right lane, another truck proceeds slowly near the crosswalk, contributing to the slow flow.", "hazard_reasoning": "There is a white truck lane changing in front of the ego car, to the right lane. The truck's lane change may reduce the gap or speed, so the driver should follow the vehicle ahead to maintain a safe distance and anticipate its movement."}
{"id": "train_01682", "split": "train", "clip_key": "2020-0220-102630_025426_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "025426"}, "frames": ["2020-0220-102630_025426_movie_t-3.jpg", "2020-0220-102630_025426_movie_t-2.jpg", "2020-0220-102630_025426_movie_t-1.jpg", "2020-0220-102630_025426_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban street with at least two same-direction lanes and no median is shown; the pavement is clean and traffic is heavy and mostly stopped. A white truck directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle stationary. A silver box truck in the right adjacent lane waits slightly ahead with minimal movement, limiting any chance to merge and blocking the view forward. A pedestrian walks along the left sidewalk behind a guardrail, remaining outside the roadway.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion. Drivers should stop to maintain a safe following distance and avoid a rear-end collision in the congested traffic."}
{"id": "train_01683", "split": "train", "clip_key": "2020-0207-151349_083788_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "083788"}, "frames": ["2020-0207-151349_083788_movie_t-3.jpg", "2020-0207-151349_083788_movie_t-2.jpg", "2020-0207-151349_083788_movie_t-1.jpg", "2020-0207-151349_083788_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road runs beneath an elevated expressway, with one lane each way and metal railings forming a narrow median; the pavement is dry and traffic is light. A motorcycle emerges from a left-side intersection near the camera, turning right across the front and merging into the ego lane, briefly affecting the vehicle's path. A small white van ahead in the same lane continues straight at modest speed under the viaduct. On the opposing side to the right, several vans are stationary along the curb facing the ego direction and remain stopped. A blue straight-ahead sign and a no U-turn sign stand on the right at the junction, while overhead traffic signals are present but not visibly lit.", "hazard_reasoning": "No caption provided. The roadway is clear of moving hazards or obstacles, so the driver can continue driving safely."}
{"id": "train_01684", "split": "train", "clip_key": "2020-0220-102630_122978_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "122978"}, "frames": ["2020-0220-102630_122978_movie_t-3.jpg", "2020-0220-102630_122978_movie_t-2.jpg", "2020-0220-102630_122978_movie_t-1.jpg", "2020-0220-102630_122978_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction and a yellow center line has smooth pavement and moderate flow as the car approaches a pedestrian overpass. Ahead in the ego lane a black minivan slows because of congestion farther ahead, constraining the ego car's pace. To the right, a white van and a dark sedan approach steadily in the oncoming lane, remaining clear of the center line. A large truck in the opposing lane passes close along the right edge as it comes toward and then by the camera.", "hazard_reasoning": "There is a black minivan slowing down in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision under congested traffic conditions."}
{"id": "train_01685", "split": "train", "clip_key": "titan_clip_550_000066_movie", "source": {"subset": "titan", "scenario": "clip_550", "frame": "000066"}, "frames": ["titan_clip_550_000066_movie_t-3.jpg", "titan_clip_550_000066_movie_t-2.jpg", "titan_clip_550_000066_movie_t-1.jpg", "titan_clip_550_000066_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the obstruction", "environment_perception": "An urban back street with a single narrow lane and no median runs between storefronts; the pavement is worn but intact and traffic is light. A white delivery truck stands ahead on the left edge of the lane, protruding into the travel path and constraining the ego vehicle's pace. Two pedestrians are ahead near the lane center walking away from the camera, drifting slightly right and may remain in the ego lane as the vehicle approaches. Another person by the truck on the left steps off the curb toward the roadway while handling items, and may move into the lane.", "hazard_reasoning": "There is a white truck stopped on the left side of the road, in the ego lane. It obstructs the lane and reduces visibility, so the driver needs to manoeuvre carefully around it."}
{"id": "train_01686", "split": "train", "clip_key": "titan_clip_716_000096_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_716_000096_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_716_000096_movie_t-3_augB1.jpg", "titan_clip_716_000096_movie_t-2_augB1.jpg", "titan_clip_716_000096_movie_t-1_augB1.jpg", "titan_clip_716_000096_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban backstreet with a narrow two-way single lane, no median, and worn but intact pavement shows light traffic as the car proceeds between shops, railings, and cones. A bicyclist ahead near the center of the lane rides away slowly, remaining in the ego path and setting the pace. A pedestrian wearing a white shirt steps from the right side into the middle of the road and crosses toward the ego vehicle mid-block because there is no crosswalk, briefly intruding into the lane. Another pedestrian stands at the left edge by orange cones, holding position and not entering the roadway. A blue no-parking sign is posted on the left, and parked bicycles and bags of trash line the sides.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, crossing the street in the middle of the road, towards the ego car, because there is no crosswalk. The driver should slow down to yield to the pedestrian crossing unexpectedly and avoid collision."}
{"id": "train_01687", "split": "train", "clip_key": "2020-0204-103442_040226_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "040226"}, "frames": ["2020-0204-103442_040226_movie_t-3.jpg", "2020-0204-103442_040226_movie_t-2.jpg", "2020-0204-103442_040226_movie_t-1.jpg", "2020-0204-103442_040226_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs under an elevated structure with smooth pavement and heavy, stop-and-go traffic. A white highway bus directly ahead in the ego lane is stopped due to congestion ahead, holding the ego vehicle in place. In the left adjacent lane, a large white box truck is halted beside the bus, occupying the lane alongside the ego car. In the right lane, a silver compact car slightly ahead waits near the bus, aligned with the same queue. No traffic signals or speed signs are clearly visible, and there is no median apparent in the scene.", "hazard_reasoning": "There is a white bus stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted bus in the backed-up traffic."}
{"id": "train_01688", "split": "train", "clip_key": "2020-0204-150838_056180_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "056180"}, "frames": ["2020-0204-150838_056180_movie_t-3.jpg", "2020-0204-150838_056180_movie_t-2.jpg", "2020-0204-150838_056180_movie_t-1.jpg", "2020-0204-150838_056180_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway under a complex elevated interchange runs three lanes in one direction with guardrails on both sides; the pavement is smooth and traffic is light and steady. A silver coach bus is directly ahead in the ego lane moving away, effectively setting the pace. A white van travels alongside in the right lane slightly ahead, continuing straight without drifting toward the ego lane. Farther ahead, another bus proceeds in the middle lane. A blue Route 357 sign is visible on the left shoulder.", "hazard_reasoning": "There is a silver bus driving in the ego lane, away from the ego car. Maintain a safe following distance to anticipate any unexpected slowing of the bus."}
{"id": "train_01689", "split": "train", "clip_key": "2020-0220-151845_047203_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "047203"}, "frames": ["2020-0220-151845_047203_movie_t-3.jpg", "2020-0220-151845_047203_movie_t-2.jpg", "2020-0220-151845_047203_movie_t-1.jpg", "2020-0220-151845_047203_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban left-hand-traffic arterial runs under an elevated expressway, with a raised curb divider on the left and a guardrail on the right; the pavement is in good condition and overall flow is moderate but slow in the ego lane. A pink-and-yellow flatbed truck directly ahead in the ego lane drives slowly, constraining the ego car due to congestion ahead. A yellow coach bus in the separated lane to the left overtakes gradually, remaining in its lane behind the curb divider. A few vehicles travel on a parallel roadway to the right at a similar pace without interacting with the ego lane. An overhead electronic sign is visible ahead.", "hazard_reasoning": "There is a pink-and-yellow truck driving slowly in the ego lane, in front of the ego car, because because of traffic congestion ahead. Follow the vehicle ahead to adjust speed accordingly and maintain a safe following distance amidst congestion."}
{"id": "train_01690", "split": "train", "clip_key": "2020-0210-101957_084627_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "084627"}, "frames": ["2020-0210-101957_084627_movie_t-3.jpg", "2020-0210-101957_084627_movie_t-2.jpg", "2020-0210-101957_084627_movie_t-1.jpg", "2020-0210-101957_084627_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "On a suburban two-lane two-way road with left-hand traffic, a solid center line, and mostly smooth asphalt, overall flow is light past low-rise shops and houses. A brown concrete mixer truck directly ahead in the ego lane slows, controlling the ego vehicle's speed. The opposite lane to the right has no nearby oncoming vehicles, and no pedestrians or cyclists approach the roadway. A short raised island with red bollards at a driveway on the left edge narrows the shoulder but does not block the lane.", "hazard_reasoning": "There is a brown concrete mixer truck slowing down in the ego lane. The truck's reduced speed ahead could require the driver to slow down to maintain a safe following distance and avoid abrupt braking."}
{"id": "train_01691", "split": "train", "clip_key": "titan_clip_888_000450_movie", "source": {"subset": "titan", "scenario": "clip_888", "frame": "000450"}, "frames": ["titan_clip_888_000450_movie_t-3.jpg", "titan_clip_888_000450_movie_t-2.jpg", "titan_clip_888_000450_movie_t-1.jpg", "titan_clip_888_000450_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian ahead", "environment_perception": "A dense urban alley with a single narrow undivided roadway has no centerline, smooth dry pavement, and very light traffic with no moving vehicles. A pedestrian wearing a cap and white shirt walks away from the ego vehicle in the middle of the road, remaining in the ego path and constraining its pace. Another pedestrian ahead-left in a dark shirt walks away along the lane near the storefronts, still within the travel path. Several more pedestrians farther ahead move along the center of the street and may drift into the ego lane. Storefront signs, freestanding boards, and a scaffold with a draped sheet on the right encroach into the roadway and narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a cap and white shirt, walking in the middle of the road, away from the ego car. The pedestrian is directly in the vehicle's path, so you should yield to avoid a collision."}
{"id": "train_01692", "split": "train", "clip_key": "titan_clip_901_000330_movie", "source": {"subset": "titan", "scenario": "clip_901", "frame": "000330"}, "frames": ["titan_clip_901_000330_movie_t-3.jpg", "titan_clip_901_000330_movie_t-2.jpg", "titan_clip_901_000330_movie_t-1.jpg", "titan_clip_901_000330_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban commercial street with a single narrow lane and brick-pattern pavement runs between shops; there is no median and vehicle flow is light but slow. A garbage truck ahead in the ego lane moves slowly or stops, constraining the car's pace. A pedestrian wearing a blue dress crosses from the left into the middle of the road and continues to the right, occupying the lane ahead of the car. On the right edge, several pedestrians walk along the curb and drift toward the lane, potentially entering the path. A large delivery truck is stopped on the left and juts into the roadway, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a blue dress, crossing the street, and walking in the middle of the road, from the left side and to the right side. The driver should yield because the pedestrian is directly in the vehicle's path and at risk of collision."}
{"id": "train_01693", "split": "train", "clip_key": "2020-0228-150133_021583_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "021583"}, "frames": ["2020-0228-150133_021583_movie_t-3.jpg", "2020-0228-150133_021583_movie_t-2.jpg", "2020-0228-150133_021583_movie_t-1.jpg", "2020-0228-150133_021583_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way street approaches a level railroad crossing with one lane in each direction, no median, and smooth pavement; traffic is moderate with queues on both sides. A yellow-and-black barrier is lowered in front of the ego car at the crossing, blocking the lane. Beyond the gate, several pedestrians cross left to right over the tracks and through the crosswalk, constraining movement. On the far side, an oncoming silver van waits facing the ego at the stop line behind its gate. To the right curb beyond the gate, a bicyclist stands and waits to proceed and may enter the ego lane once the crossing opens. Railroad crossing signals and equipment are visible.", "hazard_reasoning": "There is a yellow and black traffic barrier in front of the ego car. The lowered barrier blocks the roadway and indicates an active railway crossing, requiring the driver to stop to avoid collision and comply with the crossing signals."}
{"id": "train_01694", "split": "train", "clip_key": "2020-0225-102455_002616_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_002616_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_002616_movie_t-3_augB1.jpg", "2020-0225-102455_002616_movie_t-2_augB1.jpg", "2020-0225-102455_002616_movie_t-1_augB1.jpg", "2020-0225-102455_002616_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Stop and wait behind the cyclist.", "environment_perception": "An urban three-lane arterial with smooth pavement and a central divider carries slow, congested same-direction traffic past mid-rise buildings. A large box truck directly ahead in the ego lane creeps and pauses, controlling the ego vehicle's pace. To the far left edge in front of the ego car, a cyclist is stopped against the curb amid the queue and could reenter the lane as traffic moves. In the adjacent right lane a white van advances past the ego vehicle, overtaking the slower line. Overhead directional signs indicate an upcoming split in lanes.", "hazard_reasoning": "There is a cyclist wearing a brown jacket and riding a red bicycle, stopped in front of the ego car but to the far left of the lane, because of traffic congestion. The driver should stop to avoid colliding with the stationary cyclist."}
{"id": "train_01695", "split": "train", "clip_key": "2020-0204-103442_068925_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "068925"}, "frames": ["2020-0204-103442_068925_movie_t-3.jpg", "2020-0204-103442_068925_movie_t-2.jpg", "2020-0204-103442_068925_movie_t-1.jpg", "2020-0204-103442_068925_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "A quiet urban residential two-way road with one lane in each direction slopes gently downhill, has no median, and shows good pavement; traffic is light but bunches slightly ahead. Ahead in the left-hand ego lane, a black sedan slows due to a short queue of vehicles farther forward, constraining the ego vehicle's pace. No oncoming traffic is visible. The number 40 is painted on the roadway as a speed marking.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane, because there is traffic congestion, in front of the ego car. You should slow down to maintain a safe following distance and adjust to the reduced speed."}
{"id": "train_01696", "split": "train", "clip_key": "2020-0205-152530_012757_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "012757"}, "frames": ["2020-0205-152530_012757_movie_t-3.jpg", "2020-0205-152530_012757_movie_t-2.jpg", "2020-0205-152530_012757_movie_t-1.jpg", "2020-0205-152530_012757_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop.", "environment_perception": "An urban arterial with two lanes in the ego direction runs between high-rise buildings, with a guardrail and sidewalk on the left; the pavement is dry and traffic is heavy with a queue at a signal. A black sedan directly ahead in the ego lane is stopped because the traffic light ahead is red, holding the ego vehicle. In the adjacent right lane, a white kei van eases forward past the ego car at low speed, occupying the lane beside it. Farther ahead, a line of cars in both lanes waits at the intersection, keeping the flow slow. The bright low sun creates glare toward the intersection.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The stopped black sedan indicates vehicles ahead are halted for the red light, so the driver must stop to avoid a collision."}
{"id": "train_01697", "split": "train", "clip_key": "2020-0227-153144_019106_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "019106"}, "frames": ["2020-0227-153144_019106_movie_t-3.jpg", "2020-0227-153144_019106_movie_t-2.jpg", "2020-0227-153144_019106_movie_t-1.jpg", "2020-0227-153144_019106_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two same-direction lanes runs between midrise buildings, separated from oncoming lanes by a guardrailed planted median; the pavement looks smooth and traffic is moderate, bunching at the intersection. A black hatchback directly ahead in the ego lane is stopped for the red signal, holding the ego vehicle. In the adjacent left lane a dark minivan creeps forward alongside in the queue. On the far side beyond the median, a pedestrian crosses the opposing lanes while a cyclist approaches the crosswalk, both distant from the ego path. Overhead traffic lights ahead show red above the through lanes.", "hazard_reasoning": "There is a black hatchback that has stopped in the ego lane because of a red traffic light. The vehicle ahead is halted at the red light, so you should stop to avoid a rear-end collision."}
{"id": "train_01698", "split": "train", "clip_key": "2020-0129-105040_000246_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "000246"}, "frames": ["2020-0129-105040_000246_movie_t-3.jpg", "2020-0129-105040_000246_movie_t-2.jpg", "2020-0129-105040_000246_movie_t-1.jpg", "2020-0129-105040_000246_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road with smooth pavement and no physical median comes into view, and traffic flows slowly near a signalized junction. A black minivan immediately ahead in the ego lane is stopped or creeping, limiting the ego vehicle's pace. To the right, a green and white city bus travels past in the oncoming lanes, continuing straight through the junction without affecting the ego lane. Overhead traffic lights and apartment buildings line the corridor, and no hazards or work zones are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01699", "split": "train", "clip_key": "2020-0210-101957_020022_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "020022"}, "frames": ["2020-0210-101957_020022_movie_t-3.jpg", "2020-0210-101957_020022_movie_t-2.jpg", "2020-0210-101957_020022_movie_t-1.jpg", "2020-0210-101957_020022_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Slow down for traffic congestion", "environment_perception": "An urban multi-lane arterial with good pavement carries heavy, stop-and-go same-direction traffic approaching a busy intersection. Overhead blue directional signs span the roadway as queues build ahead. In the ego lane a black motorcycle stops directly ahead because of congestion at the intersection, blocking the ego vehicle's path. Slightly farther ahead in the same lane a small white van is also halted in the queue, constraining the motorcycle and the ego vehicle. In the right adjacent lane a large silver box truck stands still alongside, limiting opportunities to merge right. In the left adjacent lane a black minivan followed by a red hatchback creeps forward in the queue, pacing the ego vehicle.", "hazard_reasoning": "There is a black motorcycle stopped in the ego lane because of traffic congestion ahead in the intersection. The driver should slow down to avoid colliding with the stationary motorcycle and account for congestion ahead."}
{"id": "train_01700", "split": "train", "clip_key": "2020-0206-142535_045988_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "045988"}, "frames": ["2020-0206-142535_045988_movie_t-3.jpg", "2020-0206-142535_045988_movie_t-2.jpg", "2020-0206-142535_045988_movie_t-1.jpg", "2020-0206-142535_045988_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with stopped vehicle.", "environment_perception": "An urban multi-lane arterial with painted lane lines and dry pavement is shown, with heavy traffic queuing in the left-side same-direction lanes while a rightmost lane looks relatively open. The flow stays slow and mostly stopped. A black hatchback directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle. Farther ahead to the left, a large yellow tour bus stands in the adjacent lane and contributes to the queue. A white marked sedan alongside on the far left creeps forward near the curb and may merge toward the ego lane, limiting room to change lanes.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, because of traffic congestion ahead. The driver should stop promptly to avoid colliding with the halted hatchback amid congestion."}
{"id": "train_01701", "split": "train", "clip_key": "titan_clip_685_000198_movie", "source": {"subset": "titan", "scenario": "clip_685", "frame": "000198"}, "frames": ["titan_clip_685_000198_movie_t-3.jpg", "titan_clip_685_000198_movie_t-2.jpg", "titan_clip_685_000198_movie_t-1.jpg", "titan_clip_685_000198_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shopping street with a narrow two-way road and no median is shown; the asphalt is smooth, the ego vehicle proceeds in the left lane, and the area functions as a shared zone with very light vehicle traffic and many pedestrians. A man wearing a blue shirt and blue shorts with a backpack on the right walks toward the vehicle while looking at his phone, moving partly in the lane and possibly entering its path. Several pedestrians ahead in the center of the roadway stroll and cross between the shops, occupying the lane and constraining the vehicle's pace. On the near right edge, another pedestrian walks along the roadway close to the vehicle's path.", "hazard_reasoning": "There is a man wearing a blue shirt and blue shorts, carrying a backpack, looking into a phone, and walking towards the ego car, on the right side of the road. The pedestrian's inattention and trajectory toward the vehicle create a risk of collision, so the driver should manoeuvre safely to avoid him."}
{"id": "train_01702", "split": "train", "clip_key": "2020-0214-102601_047031_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "047031"}, "frames": ["2020-0214-102601_047031_movie_t-3.jpg", "2020-0214-102601_047031_movie_t-2.jpg", "2020-0214-102601_047031_movie_t-1.jpg", "2020-0214-102601_047031_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane per direction runs under an elevated structure, divided by a solid yellow centerline; the asphalt looks smooth and traffic is light. A white truck ahead in the left ego lane drives away at a steady pace, staying in lane and effectively setting the ego vehicle's speed. Two passenger cars are farther ahead in the same direction near a gentle right bend, continuing straight and maintaining separation. No oncoming traffic is visible in the opposing lane. Guardrails and a high wall line the right, and the overhead structure creates a partially blind right curve that limits forward sight.", "hazard_reasoning": "There is a white truck driving in the left lane, away from the ego car. The truck ahead could brake suddenly or change speed, so maintain a safe following distance."}
{"id": "train_01703", "split": "train", "clip_key": "titan_clip_635_000300_movie", "source": {"subset": "titan", "scenario": "clip_635", "frame": "000300"}, "frames": ["titan_clip_635_000300_movie_t-3.jpg", "titan_clip_635_000300_movie_t-2.jpg", "titan_clip_635_000300_movie_t-1.jpg", "titan_clip_635_000300_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "A narrow urban two-way street with smooth asphalt runs between mid-rise buildings, lacking a median; traffic is light and the ego car follows a small box truck ahead that slows near the left curb. A pedestrian wearing a white T-shirt, black shorts, and carrying a handbag crosses ahead from the left to the right directly across the ego lane, passing in front of the vehicle. On the right side slightly farther ahead, another pedestrian walks along the roadway edge near storefronts beside the truck. An oncoming white van moves slowly on the opposite side, threading through the narrow corridor past the stopped truck.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, wearing black shorts, and carrying a handbag, who is crossing the street in front of the ego car, from the left side of the street to the right side. The pedestrian has entered the vehicle's path and has the right of way, so the driver must yield to prevent a potential collision."}
{"id": "train_01704", "split": "train", "clip_key": "2020-0131-135401_081304_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "081304"}, "frames": ["2020-0131-135401_081304_movie_t-3.jpg", "2020-0131-135401_081304_movie_t-2.jpg", "2020-0131-135401_081304_movie_t-1.jpg", "2020-0131-135401_081304_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated two-way road with a single lane each direction curves gently right, lined by concrete barriers and fencing; the asphalt is dry and traffic is light. A black sedan ahead in the ego lane travels steadily through the bend, setting the pace for the ego vehicle. Farther ahead, a small white car in the same direction continues along the curve and increases the gap. A speed-limit sign showing 40 appears ahead on a roadside structure, and right-pointing chevrons mark the curve.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01705", "split": "train", "clip_key": "titan_clip_573_000312_movie", "source": {"subset": "titan", "scenario": "clip_573", "frame": "000312"}, "frames": ["titan_clip_573_000312_movie_t-3.jpg", "titan_clip_573_000312_movie_t-2.jpg", "titan_clip_573_000312_movie_t-1.jpg", "titan_clip_573_000312_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban narrow two-way street with a single lane each direction and no median curves gently right on smooth pavement, and traffic is light. Ahead in the ego lane, a black truck is stopped at the left side with its rear open for unloading, blocking the path and dictating the ego vehicle's pace. A bicyclist close to the left edge slightly ahead rides in the same direction along the curb, near the parked cars and within the ego lane approaching the obstruction. On the right sidewalk, a person stands next to a scooter by orange cones, staying off the road. Parked vehicles along the left curb further constrict the lane.", "hazard_reasoning": "There is a black truck stopped in the ego lane, because it is being offloaded, on the left side of the road. The stopped vehicle partially blocks the lane and forces the ego-vehicle to navigate around it, increasing the risk of collision, so the driver should carefully maneuver to maintain safe clearance."}
{"id": "train_01706", "split": "train", "clip_key": "titan_clip_1055_000336_movie", "source": {"subset": "titan", "scenario": "clip_1055", "frame": "000336"}, "frames": ["titan_clip_1055_000336_movie_t-3.jpg", "titan_clip_1055_000336_movie_t-2.jpg", "titan_clip_1055_000336_movie_t-1.jpg", "titan_clip_1055_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian pushing a cart.", "environment_perception": "A narrow urban two-way street with left-side driving and no median runs between shops; the pavement is smooth and traffic is light as the ego vehicle proceeds straight past vehicles stopped along the left curb. Ahead slightly left in the middle of the road, a pedestrian wearing black pants pushes a cart and crosses toward the left curb, encroaching on the ego lane and constraining the pace. Far ahead in the same direction, a small car continues straight in the lane, maintaining separation from the ego vehicle. No salient signals or speed signs are visible, and the parked vans on the left narrow the lane near the ego.", "hazard_reasoning": "There is a pedestrian wearing black pants, pushing a cart, and crossing the street, in the middle of the road, to the left side. The driver should yield because the pedestrian is obstructing the lane and poses a collision hazard if not given right of way."}
{"id": "train_01707", "split": "train", "clip_key": "titan_clip_1255_000462_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1255_000462_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1255_000462_movie_t-3_augB1.jpg", "titan_clip_1255_000462_movie_t-2_augB1.jpg", "titan_clip_1255_000462_movie_t-1_augB1.jpg", "titan_clip_1255_000462_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban neighborhood scene shows a narrow two-way road with no center line, smooth pavement, and light traffic. Ahead near the center, an oncoming black car moves up the street in its lane toward the ego vehicle, passing on the right. Along the left edge, a cyclist wearing a pink shirt rides toward the ego car on the curbside, potentially nearing the ego lane. On the right, two pedestrians are by the curb-one standing near a driveway and another walking farther ahead-both remaining on the sidewalk. A van is stopped on the left with its sliding door open, reducing clearance beside the guardrail, and a side-street junction with a parking sign is visible ahead.", "hazard_reasoning": "There is a cyclist wearing a pink shirt and cycling on the left side of the road, towards the ego car. The cyclist's proximity to the vehicle's path requires the driver to slow down to maintain a safe distance and prevent a collision."}
{"id": "train_01708", "split": "train", "clip_key": "2020-0205-152530_044021_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "044021"}, "frames": ["2020-0205-152530_044021_movie_t-3.jpg", "2020-0205-152530_044021_movie_t-2.jpg", "2020-0205-152530_044021_movie_t-1.jpg", "2020-0205-152530_044021_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial with painted lane markings and no physical median stretches ahead, the pavement looks smooth and traffic flows at a moderate pace as the car approaches a large intersection. A white truck drives ahead in the ego lane, moving away from the ego car and effectively setting the pace. To the right ahead, a dark sedan in the adjacent same-direction lane proceeds straight at a similar speed without edging into the ego lane. On the far right, several oncoming vehicles travel through the intersection in their lanes. On the left sidewalk near the crosswalk, a few pedestrians walk and wait at the corner without stepping into the roadway. Overhead blue direction signs mark the intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01709", "split": "train", "clip_key": "2020-0228-150133_017460_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "017460"}, "frames": ["2020-0228-150133_017460_movie_t-3.jpg", "2020-0228-150133_017460_movie_t-2.jpg", "2020-0228-150133_017460_movie_t-1.jpg", "2020-0228-150133_017460_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield promptly", "environment_perception": "An urban two-way road with one lane each direction and a painted centerline runs past shops and apartments; the pavement is dry and traffic is light, though the ego lane is momentarily stopped. A gray van directly ahead in the ego lane is stopped because a bus is halted further ahead on the same side, blocking the lane and constraining the ego vehicle. The bus ahead stands at the curb in the same direction and remains stationary, holding up following vehicles. A pedestrian on the right at the side street walks along the marked crossing toward the near curb, near but not entering the ego lane. A 40 speed-limit sign and a no-parking sign are visible on the left.", "hazard_reasoning": "There is a gray van stopped in front of the ego-car, in the ego lane, because of the bus stopped ahead on the road. The driver should yield to prevent rear-ending the stationary van and bus."}
{"id": "train_01710", "split": "train", "clip_key": "2020-0214-102601_003581_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "003581"}, "frames": ["2020-0214-102601_003581_movie_t-3.jpg", "2020-0214-102601_003581_movie_t-2.jpg", "2020-0214-102601_003581_movie_t-1.jpg", "2020-0214-102601_003581_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "be aware of cyclist ahead", "environment_perception": "An urban residential two-way road with a single lane in each direction curves gently right toward a marked crosswalk; the pavement is smooth and traffic is light. A cyclist wearing black rides ahead near the right edge of the ego lane, moving in the same direction and subtly constraining the ego car's pace. Two pedestrians stand near the curb by the crosswalk on the right sidewalk, close to the travel lane. Another pedestrian walks along the left sidewalk farther ahead. A pedestrian crossing sign is posted overhead and on a roadside pole, and a white van is parked on the right beyond the crossing.", "hazard_reasoning": "There is a cyclist wearing black, cycling in front of the ego car, to the right side. The cyclist's proximity and position ahead on the right mean the driver must adjust speed and monitor lateral space to avoid a potential collision."}
{"id": "train_01711", "split": "train", "clip_key": "2020-0214-145407_013642_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "013642"}, "frames": ["2020-0214-145407_013642_movie_t-3.jpg", "2020-0214-145407_013642_movie_t-2.jpg", "2020-0214-145407_013642_movie_t-1.jpg", "2020-0214-145407_013642_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of lane change ahead", "environment_perception": "An urban arterial with two same-direction lanes runs straight between midrise buildings on a dry, well-kept surface. Traffic is moderate in the ego lane but heavy in the adjacent right lane, which queues beside a narrow divider. A white van ahead moves left in front of the ego car, changing from the ego lane into the left lane while easing its speed to merge. A dark minivan already in the left lane proceeds just ahead, influencing the timing of the merge. Cars in the right lane crawl in a long line and remain in their lane. Parked vehicles sit along the left curb in a side bay.", "hazard_reasoning": "There is a white van lane changing in front of the ego car to the left lane. Its lane change could reduce available space, so you should be aware and prepare to adjust speed or steering."}
{"id": "train_01712", "split": "train", "clip_key": "2020-0131-135401_059080_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "059080"}, "frames": ["2020-0131-135401_059080_movie_t-3.jpg", "2020-0131-135401_059080_movie_t-2.jpg", "2020-0131-135401_059080_movie_t-1.jpg", "2020-0131-135401_059080_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban road with adjacent same-direction lanes passes under a steel railway overpass, the pavement looks worn but intact, and traffic flows at a steady moderate pace. A white van moves ahead in the ego lane directly in front of the car and holds a steady speed, effectively setting the pace. In the right lane, a small white kei truck runs slightly ahead and continues straight alongside without apparent signaling. Farther forward, a larger box truck leads the stream in the distance and eases the flow. A metal guardrail and a row of safety cones line the left edge beneath the bridge.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01713", "split": "train", "clip_key": "titan_clip_541_000978_movie", "source": {"subset": "titan", "scenario": "clip_541", "frame": "000978"}, "frames": ["titan_clip_541_000978_movie_t-3.jpg", "titan_clip_541_000978_movie_t-2.jpg", "titan_clip_541_000978_movie_t-1.jpg", "titan_clip_541_000978_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban side street with a single narrow lane and a marked bike lane on the right runs between buildings; the pavement is smooth and traffic in the ego lane is light with no vehicles immediately ahead, while a fenced parallel road on the left carries heavier flow. On the right beside the curb, a pedestrian wearing black shorts and a black T-shirt walks forward within the narrow bike lane, close to the ego vehicle's path. Farther ahead on the right, a few pedestrians move along the shopfronts on the sidewalk with no clear encroachment. Vehicles on the parallel roadway to the left proceed slowly behind the fence, separated from the ego lane.", "hazard_reasoning": "There is a male pedestrian wearing black shorts and a black t-shirt, who is walking on the right hand side of the road, in a narrow bike lane, to the right of the ego-car. The pedestrian's position in the bike lane adjacent to the road may lead to unexpected movement into the vehicle's path, so the driver should be aware of the pedestrian ahead."}
{"id": "train_01714", "split": "train", "clip_key": "2020-0225-145150_029433_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-145150_029433_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-145150_029433_movie_t-3_augB1.jpg", "2020-0225-145150_029433_movie_t-2_augB1.jpg", "2020-0225-145150_029433_movie_t-1_augB1.jpg", "2020-0225-145150_029433_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multi-lane arterial runs straight between mid-rise buildings, with smooth pavement and a painted gore area on the right as traffic builds to moderate congestion ahead. A blue pickup truck directly ahead in the ego lane slows, matching the queue and constraining the ego car's pace due to traffic congestion. In the adjacent right lane a white van slightly ahead continues forward at a steady speed, potentially moving past the slower lane. Farther ahead in the ego lane a small white car proceeds in the same queue, maintaining a gap behind the truck. On the far side of the roadway, other vehicles travel independently in parallel lanes separated by the marked divider, with no pedestrians or bicyclists visible.", "hazard_reasoning": "There is a blue pickup truck slowing down in front of the ego car in the ego lane due to traffic congestion. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01715", "split": "train", "clip_key": "2020-0205-103411_114655_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "114655"}, "frames": ["2020-0205-103411_114655_movie_t-3.jpg", "2020-0205-103411_114655_movie_t-2.jpg", "2020-0205-103411_114655_movie_t-1.jpg", "2020-0205-103411_114655_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the black hatchback", "environment_perception": "An urban multi-lane arterial with a striped buffer to the right runs straight in light traffic; the asphalt looks rough with several patched spots and the flow remains smooth. A black hatchback just ahead shifts from the left lane into the ego lane in front of the ego-car, then continues ahead and briefly dictates our pace. Farther ahead in the adjacent right lane, a white van travels straight at a steady speed without merging toward our path. An overhead directional sign is visible further along the road near an overpass, with no traffic signals in view.", "hazard_reasoning": "There is a black hatchback changing lanes, from the left lane to the ego lane, in front of the ego-car. This lane change could move into your lane unexpectedly, so you should stay aware of its position."}
{"id": "train_01716", "split": "train", "clip_key": "titan_clip_424_000912_movie", "source": {"subset": "titan", "scenario": "clip_424", "frame": "000912"}, "frames": ["titan_clip_424_000912_movie_t-3.jpg", "titan_clip_424_000912_movie_t-2.jpg", "titan_clip_424_000912_movie_t-1.jpg", "titan_clip_424_000912_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban narrow two-way street with single lanes and no median comes into view; the pavement looks smooth and traffic is light. Ahead on the left edge, a white flatbed truck is parked partly in the ego lane beside a work site, constraining the available width and slowing progress. Beside the truck, a worker in blue walks and pauses near the curb, occasionally stepping around equipment and potentially edging into the travel lane. No vehicles are moving ahead in the same direction, and no oncoming traffic is visible down the street. A 30 speed marking is painted on the road. Cones, temporary fencing, a right-side guardrail, and several parked bicycles create a mild pinch point along the corridor.", "hazard_reasoning": "There is a white truck that is parked in the ego lane, on the left side of the road. This parked truck blocks the travel lane and the driver should carefully manoeuvre around it to avoid a collision and maintain lane safety."}
{"id": "train_01717", "split": "train", "clip_key": "2020-0228-102841_021617_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "021617"}, "frames": ["2020-0228-102841_021617_movie_t-3.jpg", "2020-0228-102841_021617_movie_t-2.jpg", "2020-0228-102841_021617_movie_t-1.jpg", "2020-0228-102841_021617_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped truck ahead.", "environment_perception": "An urban multi-lane arterial with several lanes in each direction and no physical median is shown; the pavement is dry and smooth, and traffic remains light as the ego approaches a wide intersection. On the left edge of the same-direction lanes, a white truck is stopped at the curb and remains stationary, potentially encroaching on the left lane. Far ahead in the center of the ego-side lanes, a white car continues straight at a steady pace, leading the ego vehicle. On the far right, a few oncoming cars move through the opposite lanes with ample separation. Parked vehicles line the left curb, and a broad crosswalk spans the foreground.", "hazard_reasoning": "There is a white truck stopped on the left side of the road. The stationary truck may require you to slow down or change lanes unexpectedly, so the driver should be aware of its presence."}
{"id": "train_01718", "split": "train", "clip_key": "2020-0220-102630_111068_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "111068"}, "frames": ["2020-0220-102630_111068_movie_t-3.jpg", "2020-0220-102630_111068_movie_t-2.jpg", "2020-0220-102630_111068_movie_t-1.jpg", "2020-0220-102630_111068_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane in each direction and no median stretches ahead, the pavement smooth and traffic light. The ego vehicle proceeds in the left lane past small shops and utility poles with no notable change in flow. Two white vans approach in the oncoming right-hand lane at moderate speed, staying in their lane and passing without affecting the ego path. On the near right at the corner, a cyclist moves slowly along the curb by the intersection and may enter the roadway, making them the most relevant nearby user. Farther ahead, a small truck is stopped near the right curb in the opposing lane.", "hazard_reasoning": "No hazards are detected in the scene, and the roadway ahead is clear, so the driver can proceed normally and maintain current speed."}
{"id": "train_01719", "split": "train", "clip_key": "2020-0129-105040_026155_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "026155"}, "frames": ["2020-0129-105040_026155_movie_t-3.jpg", "2020-0129-105040_026155_movie_t-2.jpg", "2020-0129-105040_026155_movie_t-1.jpg", "2020-0129-105040_026155_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for the red traffic light ahead.", "environment_perception": "An urban multi-lane arterial under an elevated structure has smooth pavement and same-direction traffic queued at a signalized intersection. A yellow sedan directly ahead in the ego lane is stopped for a red light, holding the ego vehicle in place. In the adjacent right lane, a white van slightly ahead waits at the red with the queue. Along the left curb, a motor scooter inches forward past the line of cars toward the intersection and may move ahead when the light changes. The overhead traffic signal shows red.", "hazard_reasoning": "There is a yellow sedan stopped in the ego lane because of a red traffic light. The driver must stop to avoid colliding with the halted vehicle at the red light."}
{"id": "train_01720", "split": "train", "clip_key": "2020-0127-132751_088849_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "088849"}, "frames": ["2020-0127-132751_088849_movie_t-3.jpg", "2020-0127-132751_088849_movie_t-2.jpg", "2020-0127-132751_088849_movie_t-1.jpg", "2020-0127-132751_088849_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road approaches a signalized crosswalk with smooth pavement and light to moderate flow. A blue truck ahead in the ego lane slows toward the intersection due to congestion ahead and temporarily controls the ego car's pace. An oncoming car in the right-side lanes moves through the junction and continues past without affecting the ego path. A pedestrian on the left sidewalk stands by the fenced curb near the crosswalk and remains off the roadway. An overhead traffic signal shows a green straight arrow above the ego lane.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Driver should slow down to maintain a safe distance and avoid collision due to the slowing vehicle ahead."}
{"id": "train_01721", "split": "train", "clip_key": "2020-0228-102841_038792_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_038792_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_038792_movie_t-3_augB1.jpg", "2020-0228-102841_038792_movie_t-2_augB1.jpg", "2020-0228-102841_038792_movie_t-1_augB1.jpg", "2020-0228-102841_038792_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial with smooth pavement runs between tall buildings, and same-direction traffic is moderate to heavy, bunching into a slow queue ahead. Ahead in the ego lane, a white hatchback slows because of congestion and directly sets the ego vehicle's pace. To the right, a white SUV in the adjacent lane creeps forward alongside close to the ego car, limiting a right-lane change. Farther ahead in the right lane, a small white truck also rolls slowly with the pack, keeping that lane blocked.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and avoid a collision due to the reduced speed of the vehicle ahead."}
{"id": "train_01722", "split": "train", "clip_key": "titan_clip_1144_000282_movie", "source": {"subset": "titan", "scenario": "clip_1144", "frame": "000282"}, "frames": ["titan_clip_1144_000282_movie_t-3.jpg", "titan_clip_1144_000282_movie_t-2.jpg", "titan_clip_1144_000282_movie_t-1.jpg", "titan_clip_1144_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of the pedestrian", "environment_perception": "A narrow urban back street with a single unmarked two-way lane runs between shopfronts and a metal fence; there is no divider, the asphalt looks worn but dry, and traffic is light with no moving vehicles. Ahead on the right, a pedestrian wearing a hat and carrying a handbag walks toward the ego vehicle along the edge of the road and may encroach on the path due to the tight space. Farther ahead on the right, a line of parked bicycles and orange barriers occupies the roadside and further narrows the passage. The left side has closed storefronts close to the curb, and no other road users appear.", "hazard_reasoning": "There is a pedestrian wearing a hat and a handbag, walking along the right side of the road, toward the ego car. The pedestrian's movement toward the vehicle's path could lead to a potential collision if the driver is not alert."}
{"id": "train_01723", "split": "train", "clip_key": "2020-0214-145407_057230_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "057230"}, "frames": ["2020-0214-145407_057230_movie_t-3.jpg", "2020-0214-145407_057230_movie_t-2.jpg", "2020-0214-145407_057230_movie_t-1.jpg", "2020-0214-145407_057230_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian waiting to cross", "environment_perception": "An urban multi-lane arterial with smooth pavement approaches a signalized intersection, and traffic flows at a moderate pace beneath a pedestrian overpass carrying a large blue directional sign. A white hatchback directly ahead in the ego lane travels straight and sets the pace for the ego vehicle. To the right, a black van advances in the adjacent lane alongside, keeping parallel and limiting an immediate lane change. On the left side of the intersection, a pedestrian wearing black pants and a black shirt waits at the curb to cross, positioned to enter the crosswalk across the ego lane when permitted. Overhead signage indicates Yokohama 27 km, Kawasaki 14 km, and Gotanda 2 km.", "hazard_reasoning": "There is a pedestrian wearing black pants and a black shirt, waiting to cross at the left side of the intersection. The driver should be cautious because the pedestrian may step onto the roadway unexpectedly."}
{"id": "train_01724", "split": "train", "clip_key": "2020-0206-142535_017699_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "017699"}, "frames": ["2020-0206-142535_017699_movie_t-3.jpg", "2020-0206-142535_017699_movie_t-2.jpg", "2020-0206-142535_017699_movie_t-1.jpg", "2020-0206-142535_017699_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down.", "environment_perception": "A dense urban arterial with multi-lane left-hand traffic runs between high-rise buildings on dry, smooth pavement, and the flow is heavy and slow. Ahead in the ego lane, a gray SUV slows because congestion forms in front, directly constraining the ego vehicle's pace. Slightly farther ahead and to the left, a tall box truck creeps in the adjacent lane, moving with the queue and reducing forward gaps. On the left beside the ego, a black crossover travels at a similar slow speed, limiting room to merge. Overhead blue destination signs span the road, and pedestrians move along the fenced sidewalk on the right behind a barrier.", "hazard_reasoning": "A gray SUV slowing down in front of the ego car, because of traffic congestion ahead. This indicates a buildup of vehicles ahead, so the driver should slow down to maintain a safe distance and prevent a collision."}
{"id": "train_01725", "split": "train", "clip_key": "titan_clip_56_000486_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_56_000486_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_56_000486_movie_t-3_augB1.jpg", "titan_clip_56_000486_movie_t-2_augB1.jpg", "titan_clip_56_000486_movie_t-1_augB1.jpg", "titan_clip_56_000486_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian crossing ahead", "environment_perception": "An urban two-way street with no median and smooth pavement is seen, with light traffic and several vehicles parked along the curbs. A blue delivery truck is stopped ahead partly in the ego lane with a cone behind it, narrowing the lane and likely constraining the ego vehicle's pace. In the middle of the road ahead, a pedestrian wearing a white shirt crosses from the left to the right, briefly occupying the travel lane and potentially entering the ego path. On the right sidewalk near the camera, a worker pushes a handcart parallel to the roadway, staying off the lane. The oncoming lane appears clear.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and crossing the street, from the left side to the right side, in the middle of the road. You should yield because the pedestrian is in your path and has right-of-way."}
{"id": "train_01726", "split": "train", "clip_key": "titan_clip_1370_000498_movie", "source": {"subset": "titan", "scenario": "clip_1370", "frame": "000498"}, "frames": ["titan_clip_1370_000498_movie_t-3.jpg", "titan_clip_1370_000498_movie_t-2.jpg", "titan_clip_1370_000498_movie_t-1.jpg", "titan_clip_1370_000498_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with one lane each direction runs between mid-rise buildings; the right edge is coned off for roadworks, squeezing the usable lane on worn asphalt, and overall traffic is light with no vehicles moving ahead. On the left near the curb, a pedestrian in a white top carrying a handbag walks away from the ego car along the roadway edge, close to the travel path. Ahead on the left, two other pedestrians proceed in the same direction, hugging the curb and potentially constraining the car's pace through the pinch point. To the right, several road workers remain within a coned work zone beside a small excavator, outside the lane but reducing lateral clearance. An unsignalized intersection is visible at the block end.", "hazard_reasoning": "There is a pedestrian in a white top carrying a handbag, walking on the left side of the road, away from the ego car. The driver should slow down to maintain a safe distance and be prepared for any unexpected crossing."}
{"id": "train_01727", "split": "train", "clip_key": "2020-0205-152530_005276_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "005276"}, "frames": ["2020-0205-152530_005276_movie_t-3.jpg", "2020-0205-152530_005276_movie_t-2.jpg", "2020-0205-152530_005276_movie_t-1.jpg", "2020-0205-152530_005276_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane two-way street with narrow lanes and a dashed center line comes into view; the pavement looks smooth and traffic is very light with no vehicles ahead or oncoming as the car approaches a small intersection. A pedestrian on the right sidewalk near a storefront walks slowly along the curb toward the corner, potentially approaching the crossing in front of the ego lane. Another pedestrian stands on the left sidewalk beside parked bicycles by the railing, remaining off the roadway. A marked crosswalk spans the near side with no traffic signal visible, and buildings and utility poles line both sides.", "hazard_reasoning": "No visible hazards or obstacles are present; road conditions are clear and speed is controlled, so no warning is necessary."}
{"id": "train_01728", "split": "train", "clip_key": "titan_clip_869_000522_movie", "source": {"subset": "titan", "scenario": "clip_869", "frame": "000522"}, "frames": ["titan_clip_869_000522_movie_t-3.jpg", "titan_clip_869_000522_movie_t-2.jpg", "titan_clip_869_000522_movie_t-1.jpg", "titan_clip_869_000522_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian crossing", "environment_perception": "An urban commercial street forms a small intersection ahead on a two-way road without a centerline; the pavement is smooth and motor traffic is light with no vehicles immediately ahead. Two pedestrians in the near right foreground cross the ego lane from right to left at the intersection, passing directly in front and constraining the approach. On the left side, a pedestrian wearing blue pants walks to the right across the junction and may enter the ego path. Farther ahead, several people move along and across the street near shopfronts, intermittently stepping into the roadway. Bicycles and signs line the curbs but remain outside the lane.", "hazard_reasoning": "There is a pedestrian wearing blue pant on the left side of the intersection walking to the right side. Be aware as the pedestrian could enter the vehicle's path unexpectedly."}
{"id": "train_01729", "split": "train", "clip_key": "2020-0205-103411_094696_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-103411_094696_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-103411_094696_movie_t-3_augB1.jpg", "2020-0205-103411_094696_movie_t-2_augB1.jpg", "2020-0205-103411_094696_movie_t-1_augB1.jpg", "2020-0205-103411_094696_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be cautious of traffic cone", "environment_perception": "An urban multi-lane arterial carries moderate, steady traffic on smooth pavement, with a concrete barrier along the far left. The ego vehicle proceeds in the middle lane. A small flatbed truck is directly ahead in the same lane at a steady pace, constraining speed. A white sedan in the lane to the left moves slightly faster alongside, limiting a leftward lane change. In the right adjacent lane, a white car advances near a taper where an orange traffic cone stands on the right side of the ego lane, reducing lateral clearance and signaling the merge. Other vehicles farther ahead continue straight without abrupt maneuvers.", "hazard_reasoning": "There is an orange traffic cone on the right side of the lane. Drivers should be cautious because the cone may indicate upcoming construction or lane restrictions ahead."}
{"id": "train_01730", "split": "train", "clip_key": "2020-0204-150838_049940_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "049940"}, "frames": ["2020-0204-150838_049940_movie_t-3.jpg", "2020-0204-150838_049940_movie_t-2.jpg", "2020-0204-150838_049940_movie_t-1.jpg", "2020-0204-150838_049940_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway with three same-direction lanes runs between guardrails, with an elevated ramp alongside on the right; the pavement is dry and smooth and overall traffic is light. A white truck directly ahead in the ego lane slows, shortening the gap and temporarily setting the ego vehicle's pace. Farther ahead in the adjacent middle lane, a dark passenger car continues steadily without changing lanes and does not affect the ego path. Another vehicle in the right lane proceeds ahead near the right shoulder. A small gore with a concrete marker appears on the right but no signals or posted speeds are visible.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's reduced speed poses a risk of closing distance rapidly, so the driver should slow down to maintain a safe following distance."}
{"id": "train_01731", "split": "train", "clip_key": "2020-0221-115122_031112_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "031112"}, "frames": ["2020-0221-115122_031112_movie_t-3.jpg", "2020-0221-115122_031112_movie_t-2.jpg", "2020-0221-115122_031112_movie_t-1.jpg", "2020-0221-115122_031112_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to merging vehicle", "environment_perception": "An urban arterial with three same-direction lanes runs beneath an elevated structure; the pavement is dry and intact, and traffic is moderate with steady, slightly slow movement. A white hatchback immediately ahead in the ego lane rolls forward and sets the pace. To the left front, a black sedan changes from the left lane toward the middle of the ego lane, encroaching into the path. On the right ahead, a white van in the adjacent lane travels alongside at a similar speed, limiting room to merge. Farther ahead under the viaduct, another small car in the center lane proceeds steadily, keeping a modest gap.", "hazard_reasoning": "There is a black sedan car changing lanes from the left lane to the mid of ego lane. The sedan is merging into your lane, so you should yield to avoid a side collision."}
{"id": "train_01732", "split": "train", "clip_key": "2020-0131-135401_007993_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "007993"}, "frames": ["2020-0131-135401_007993_movie_t-3.jpg", "2020-0131-135401_007993_movie_t-2.jpg", "2020-0131-135401_007993_movie_t-1.jpg", "2020-0131-135401_007993_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with the stopped truck", "environment_perception": "A narrow urban two-way street with no median and smooth pavement is shown, and overall flow is light but the ego vehicle is halted. A large gray box truck is directly ahead in the ego lane and stopped, blocking the path in front of the ego car. Along the left curb, several small white vans are parked closely, narrowing the available space. In the oncoming lane to the right, a dark SUV stands at the curb near a fence, also stationary. Bright sunlight from the upper right creates glare and deep shadows, and no salient traffic signals or speed signs are visible.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car. The driver should stop to avoid collision with the stationary vehicle ahead."}
{"id": "train_01733", "split": "train", "clip_key": "2020-0228-102841_010526_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_010526_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_010526_movie_t-3_augB1.jpg", "2020-0228-102841_010526_movie_t-2_augB1.jpg", "2020-0228-102841_010526_movie_t-1_augB1.jpg", "2020-0228-102841_010526_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "An urban street with one lane each direction and a hatched center buffer. Pavement is dry and smooth, and traffic is light with vehicles moving steadily. A small pickup directly ahead in the ego lane travels at a steady speed and leads the ego vehicle. Across the center markings, an oncoming car approaches on the right, passing without conflict. On the left edge near the shops, a pedestrian in black pants carrying a backpack walks from the left toward the right and may enter the ego lane. Parked delivery trucks and bicycles line the curbs behind railings.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying a backpack, on the left side of the road walking to the right side. The pedestrian may enter the vehicle's lane unpredictably, so the driver should yield to avoid a collision."}
{"id": "train_01734", "split": "train", "clip_key": "2020-0228-102841_051460_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "051460"}, "frames": ["2020-0228-102841_051460_movie_t-3.jpg", "2020-0228-102841_051460_movie_t-2.jpg", "2020-0228-102841_051460_movie_t-1.jpg", "2020-0228-102841_051460_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban arterial with three same-direction lanes runs straight with a guardrail median on the right separating oncoming traffic; the pavement is dry and traffic is moderate, moving steadily. A small white van ahead in the ego lane proceeds at a steady pace and remains centered, setting the ego vehicle's speed. On the left curb near the camera, a white truck is parked, squeezing the usable width of the left lane as the ego vehicle passes. On the far right, a large white box truck stands stopped at the curb, narrowing the right lane but not encroaching into the ego path. Bright sun glare ahead reduces contrast but the scene remains clear.", "hazard_reasoning": "There is a white truck parked on the left side of the road. This parked truck obstructs part of the lane and blocks sightlines to the intersection, so you should manoeuvre carefully around it to maintain safe passage."}
{"id": "train_01735", "split": "train", "clip_key": "2020-0131-135401_063017_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "063017"}, "frames": ["2020-0131-135401_063017_movie_t-3.jpg", "2020-0131-135401_063017_movie_t-2.jpg", "2020-0131-135401_063017_movie_t-1.jpg", "2020-0131-135401_063017_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes and no median runs between mid-rise buildings; the asphalt is smooth and traffic is moderate, flowing steadily. A small white van ahead in the ego lane drives away at a steady speed, effectively setting the ego car's pace. A dump truck slightly farther ahead in the right lane continues forward without changing lanes, remaining parallel to the ego vehicle's path. A larger white van travels alongside in the right lane near the camera, moving past but not encroaching on the ego lane. Parked vehicles line the left curb behind a guardrail. A traffic signal structure is visible farther ahead over the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01736", "split": "train", "clip_key": "2020-0220-102630_113600_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "113600"}, "frames": ["2020-0220-102630_113600_movie_t-3.jpg", "2020-0220-102630_113600_movie_t-2.jpg", "2020-0220-102630_113600_movie_t-1.jpg", "2020-0220-102630_113600_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane per direction and no median runs between midrise buildings; the asphalt is clean and dry, and traffic moves slowly with a short queue ahead. Directly ahead in the ego lane, a black minivan slows to a stop behind other vehicles, constraining the ego vehicle's pace. Just ahead near the left curb, a delivery motorcycle is stopped in the ego lane because of traffic congestion ahead and remains in the ego path. In the oncoming lane to the right, several cars pass steadily without encroaching. A yellow construction notice stands on the left sidewalk, and a small truck is parked along the right curb.", "hazard_reasoning": "There is a motorcycle stopped in the ego lane because of traffic congestion ahead. The stopped motorbike blocks the travel lane and poses a collision risk, so the driver should stop immediately."}
{"id": "train_01737", "split": "train", "clip_key": "titan_clip_739_000180_movie", "source": {"subset": "titan", "scenario": "clip_739", "frame": "000180"}, "frames": ["titan_clip_739_000180_movie_t-3.jpg", "titan_clip_739_000180_movie_t-2.jpg", "titan_clip_739_000180_movie_t-1.jpg", "titan_clip_739_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with no center line and smooth pavement is shown, and traffic is light with no moving vehicles visible in either direction. On the left edge near the ego path, a pedestrian in a white T-shirt carrying a handbag walks toward the ego vehicle because a large truck is parked along the curb, and the person may step further into the lane. Farther ahead, a small group of pedestrians moves along the roadway near the center, reducing the available space. A box truck stands parked on the left partially blocking the lane, and a parking-garage entrance with bicycles beside it opens on the right.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, carrying a handbag, and walking on the left side of the road, towards the ego car, because of the parked truck. The pedestrian may step into the vehicle's path as the truck blocks the sidewalk, so the driver should carefully manoeuvre around them."}
{"id": "train_01738", "split": "train", "clip_key": "2020-0205-103411_106570_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "106570"}, "frames": ["2020-0205-103411_106570_movie_t-3.jpg", "2020-0205-103411_106570_movie_t-2.jpg", "2020-0205-103411_106570_movie_t-1.jpg", "2020-0205-103411_106570_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two-way traffic runs straight on dry, smooth pavement, marked by painted center lines; traffic is moderate and queues at a signalized intersection. A white van is stopped directly ahead in the ego lane because the traffic light ahead is red, holding the ego vehicle. Cars in the adjacent left lane are also stopped in the queue, limiting overtaking. Oncoming vehicles to the right proceed through the junction in their lanes beyond the center separation.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop to avoid a collision with the vehicle ahead stopped at the red light."}
{"id": "train_01739", "split": "train", "clip_key": "2020-0204-150838_080076_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "080076"}, "frames": ["2020-0204-150838_080076_movie_t-3.jpg", "2020-0204-150838_080076_movie_t-2.jpg", "2020-0204-150838_080076_movie_t-1.jpg", "2020-0204-150838_080076_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A suburban two-lane road with one lane each direction runs alongside a sound barrier on the right and trees with guardrails on the left; the pavement is dry and in good condition, and overall traffic is light with no oncoming vehicles visible. Ahead in the ego lane, a white trailer truck slows while continuing straight, reducing the ego-vehicle's pace on the gentle leftward curve. No other moving road users appear nearby. A few roadside signs line the right shoulder but no clear signals or posted speeds are visible, and there are no obstacles in the lane.", "hazard_reasoning": "There is a white trailer truck slowing down in the ego lane. The truck's speed reduction ahead could require prompt deceleration to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_01740", "split": "train", "clip_key": "titan_clip_866_000312_movie", "source": {"subset": "titan", "scenario": "clip_866", "frame": "000312"}, "frames": ["titan_clip_866_000312_movie_t-3.jpg", "titan_clip_866_000312_movie_t-2.jpg", "titan_clip_866_000312_movie_t-1.jpg", "titan_clip_866_000312_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban neighborhood street comes into view as the ego approaches a small intersection with a zebra crossing, leading onto a narrow two-way road without a median and with clean pavement; traffic is light and the oncoming lane is empty. A cyclist in a white T-shirt and white pants rides ahead along the left edge through the intersection, moving away in the ego lane and potentially setting the pace. Several pedestrians walk on the right sidewalk ahead under umbrellas, continuing parallel to traffic and not entering the road. A person stands near the left curb at the corner by the crosswalk, close to the roadway and potentially stepping out. A no-entry sign is posted at the mouth of the right side street.", "hazard_reasoning": "There is a cyclist wearing a white t-shirt and white pants, cycling at the left side of the intersection, away from the ego car. The cyclist may change direction or speed unpredictably at the intersection, so the driver must carefully manoeuvre around them to ensure safety."}
{"id": "train_01741", "split": "train", "clip_key": "titan_clip_1318_000042_movie", "source": {"subset": "titan", "scenario": "clip_1318", "frame": "000042"}, "frames": ["titan_clip_1318_000042_movie_t-3.jpg", "titan_clip_1318_000042_movie_t-2.jpg", "titan_clip_1318_000042_movie_t-1.jpg", "titan_clip_1318_000042_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van", "environment_perception": "An urban commercial street with a single lane in each direction and no median stretches ahead, the pavement smooth and traffic light with no nearby oncoming cars. A white van is parked along the left side of the road in front of the ego car, sitting partly in the travel lane and narrowing the ego path. Farther ahead a few pedestrians walk along the right sidewalk beside bollards, moving with traffic and staying off the roadway. Another pedestrian lingers on the left sidewalk near a building entrance and safety cones without approaching the curb. Bollards line both curbs, leaving a relatively narrow carriageway.", "hazard_reasoning": "There is a white van parked on the left side of the road in front of ego car. The parked van reduces lane clearance on the narrow street, so the driver should carefully manoeuvre to safely pass."}
{"id": "train_01742", "split": "train", "clip_key": "2020-0213-143552_002761_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "002761"}, "frames": ["2020-0213-143552_002761_movie_t-3.jpg", "2020-0213-143552_002761_movie_t-2.jpg", "2020-0213-143552_002761_movie_t-1.jpg", "2020-0213-143552_002761_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated structure, with two same-direction lanes curving right on smooth pavement and moderate traffic. A dark minivan directly ahead in the ego lane slows slightly and governs the ego car's speed. To the right, a silver car runs alongside then moves ahead in its lane as the roadway bends, remaining a possible merge partner. Farther ahead in the right lane, a motorcycle travels steadily away along the curve. Overhead blue lane signs show rightward arrows guiding traffic, and bright sun glare slightly reduces visibility.", "hazard_reasoning": "There is a blue truck slowing down in front of the ego-car. The truck's deceleration may require you to slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_01743", "split": "train", "clip_key": "titan_clip_316_000714_movie", "source": {"subset": "titan", "scenario": "clip_316", "frame": "000714"}, "frames": ["titan_clip_316_000714_movie_t-3.jpg", "titan_clip_316_000714_movie_t-2.jpg", "titan_clip_316_000714_movie_t-1.jpg", "titan_clip_316_000714_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian's movements", "environment_perception": "A narrow urban street with cobblestone-pattern pavement runs between tall buildings, with no median or marked centerline; traffic is light as the vehicle proceeds gently uphill. A pedestrian on the left side, wearing a blue shirt and gray pants and carrying a handbag, walks away from the car along the edge of the lane, close to the travel path. Another pedestrian farther ahead on the left also walks away near the curb. A white van ahead in the same lane moves away at low speed, constraining the ego vehicle's pace. A parked car sits tight to the left curb near the foreground, narrowing the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, gray pants, and carrying a handbag, walking on the left side of the road, away from the ego car. The pedestrian could step into the driving lane unexpectedly, so the driver should be cautious."}
{"id": "train_01744", "split": "train", "clip_key": "2020-0131-135401_053522_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "053522"}, "frames": ["2020-0131-135401_053522_movie_t-3.jpg", "2020-0131-135401_053522_movie_t-2.jpg", "2020-0131-135401_053522_movie_t-1.jpg", "2020-0131-135401_053522_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Be aware of the motorcycle", "environment_perception": "An urban multi-lane arterial with smooth asphalt runs straight through a wide signalized intersection, with no physical median and steady oncoming flow in the right-side lanes; overall traffic is moderate and moves smoothly. A white minivan ahead slightly right continues straight through the junction at a steady pace in the adjacent lane, loosely setting the flow. A silver motorcycle ahead in the left lane drives away from the ego car, remaining in our path while increasing its gap. A cyclist on the left sidewalk nears the corner and waits by the curb, posing no immediate interaction with traffic.", "hazard_reasoning": "There is a silver motorcycle driving away from the ego car, in the left lane. The motorcycle could merge into the ego-vehicle's lane unexpectedly, so be aware of its movements."}
{"id": "train_01745", "split": "train", "clip_key": "titan_clip_1289_000546_movie", "source": {"subset": "titan", "scenario": "clip_1289", "frame": "000546"}, "frames": ["titan_clip_1289_000546_movie_t-3.jpg", "titan_clip_1289_000546_movie_t-2.jpg", "titan_clip_1289_000546_movie_t-1.jpg", "titan_clip_1289_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban side street without a centerline and with a single narrow travel lane runs between buildings; the pavement is slightly worn with patches and traffic is light. On the right edge ahead, a pedestrian in a black T-shirt walks away from the ego vehicle along the curb because there is no sidewalk, keeping close to the lane. Farther ahead near the center of the roadway, a white truck slows and partially obstructs the corridor, influencing the ego car's speed. On the left, another pedestrian stands by a row of parked scooters behind a railing and remains out of the lane. Parked scooters and railings constrict clearance.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, walking on the right side of the road, away from the ego car, because there is no sidewalk. The pedestrians position on the roadway increases collision risk, so the driver should slow down to maintain a safe distance."}
{"id": "train_01746", "split": "train", "clip_key": "2020-0207-101955_024193_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "024193"}, "frames": ["2020-0207-101955_024193_movie_t-3.jpg", "2020-0207-101955_024193_movie_t-2.jpg", "2020-0207-101955_024193_movie_t-1.jpg", "2020-0207-101955_024193_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial with smooth pavement carries moderate traffic, with no physical median separating directions. The ego vehicle travels in the left-side lanes used for the same direction in Japan, and flow is steady under an overhead green signal. Ahead in the ego lane, a white box truck accelerates away under the green light, increasing the gap. In the opposite direction to the right, a white truck approaches in the nearest oncoming lane and continues straight past. Farther right, an oncoming white car advances along the curbside lane without deviating toward the center. Overhead traffic lights are clearly green.", "hazard_reasoning": "There is a white truck driving ahead of and away from the ego car, because of the green traffic light. Drivers should maintain a safe following distance behind the truck in case the signal changes and the truck slows or stops."}
{"id": "train_01747", "split": "train", "clip_key": "2020-0220-102630_121849_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "121849"}, "frames": ["2020-0220-102630_121849_movie_t-3.jpg", "2020-0220-102630_121849_movie_t-2.jpg", "2020-0220-102630_121849_movie_t-1.jpg", "2020-0220-102630_121849_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban two-way street with one narrow lane per direction and a yellow center line appears, the pavement in good condition and traffic moving slowly with a short queue ahead. A black car directly ahead in the ego lane is stopped because of congestion further up the road, forcing the ego vehicle to wait. A silver sedan in the opposing lane to the right approaches and passes steadily, representing continuous oncoming flow. Farther ahead in the same direction, more vehicles line up and creep or stop, extending the jam and constraining progress.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car because of traffic congestion ahead. The ego-vehicle must stop to avoid a rear-end collision with the halted vehicle due to slow-moving traffic."}
{"id": "train_01748", "split": "train", "clip_key": "titan_clip_92_000030_movie", "source": {"subset": "titan", "scenario": "clip_92", "frame": "000030"}, "frames": ["titan_clip_92_000030_movie_t-3.jpg", "titan_clip_92_000030_movie_t-2.jpg", "titan_clip_92_000030_movie_t-1.jpg", "titan_clip_92_000030_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around parked vehicle", "environment_perception": "An urban backstreet with a single narrow two-way lane and block paving has light traffic and no median, with a few surface patches visible. A red SUV is parked along the left curb just ahead with orange cones, narrowing the usable lane for the ego vehicle. Farther ahead, an oncoming white truck rolls slowly near the center to pass the parked vehicle, briefly occupying part of the ego path and constraining progress until it clears.", "hazard_reasoning": "There is a red SUV parked on the left side of the road. The parked SUV may obstruct the lane, requiring careful manoeuvre to maintain safe distance."}
{"id": "train_01749", "split": "train", "clip_key": "2020-0131-135401_081577_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "081577"}, "frames": ["2020-0131-135401_081577_movie_t-3.jpg", "2020-0131-135401_081577_movie_t-2.jpg", "2020-0131-135401_081577_movie_t-1.jpg", "2020-0131-135401_081577_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated two-way road with one lane each direction runs between midrise buildings, divided by a solid yellow centerline and guarded by concrete barriers; the dry pavement is smooth and traffic flows steadily. A black SUV ahead in the ego lane continues at a steady speed and thus sets the pace. Farther ahead, a white van proceeds in the same lane with a similar speed, maintaining a gap to the SUV. A distant oncoming car in the right lane passes without affecting the ego path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01750", "split": "train", "clip_key": "2020-0213-143552_067708_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "067708"}, "frames": ["2020-0213-143552_067708_movie_t-3.jpg", "2020-0213-143552_067708_movie_t-2.jpg", "2020-0213-143552_067708_movie_t-1.jpg", "2020-0213-143552_067708_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego vehicle's direction runs beside a hedge median that separates oncoming traffic to the right; the pavement looks smooth and traffic is moderate. A white box truck directly ahead in the ego lane slows, reducing the ego car's pace. A silver van alongside in the adjacent left lane proceeds straight at a similar speed, limiting room for the ego vehicle to change lanes. A dark hatchback farther ahead in the left lane continues forward past the truck, occupying the available path beside it.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane. The truck's deceleration could force the driver to brake suddenly to avoid a collision, so the driver should reduce speed promptly to maintain a safe following distance."}
{"id": "train_01751", "split": "train", "clip_key": "titan_clip_899_000186_movie", "source": {"subset": "titan", "scenario": "clip_899", "frame": "000186"}, "frames": ["titan_clip_899_000186_movie_t-3.jpg", "titan_clip_899_000186_movie_t-2.jpg", "titan_clip_899_000186_movie_t-1.jpg", "titan_clip_899_000186_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the wheelchair user.", "environment_perception": "A busy urban intersection appears on a narrow street without a median; the pavement is clean and dry, and vehicular traffic is light as the ego-vehicle waits at the zebra crossing. Ahead in the crosswalk, a pedestrian in a wheelchair crosses toward the right side across the ego lane, keeping the car stopped. Several pedestrians also cross ahead from both the left and right, walking through the ego lane and extending the clearance time. More people cluster on the right-side sidewalk near the corner shop and a few step off to join the flow, continuing to constrain the gap for moving forward.", "hazard_reasoning": "There is a pedestrian in a wheelchair crossing the street to the right side, at the pedestrian crossing. You should yield since the wheelchair user is entering your path at the crosswalk."}
{"id": "train_01752", "split": "train", "clip_key": "titan_clip_1376_000282_movie", "source": {"subset": "titan", "scenario": "clip_1376", "frame": "000282"}, "frames": ["titan_clip_1376_000282_movie_t-3.jpg", "titan_clip_1376_000282_movie_t-2.jpg", "titan_clip_1376_000282_movie_t-1.jpg", "titan_clip_1376_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrians", "environment_perception": "An urban intersection on a narrow two-way road with no median, dry pavement, and very light traffic with no nearby vehicles. Ahead on the right edge near the crosswalk, two pedestrians, one in a white shirt and one in a black shirt, walk toward the ego along the right side of the road and may enter the ego lane at the corner. On the left sidewalk, another pedestrian walks past storefronts and stays out of the roadway. A speed limit 30 sign is posted on a pole at the corner. Scaffolding and cones surround the corner restaurant, constricting the sidewalk but not affecting the lane.", "hazard_reasoning": "There are two pedestrians wearing a white shirt and black shirt, walking toward the ego car, along the right side of the road. The pedestrians are approaching the vehicle's path, so the driver should manoeuvre carefully around them to avoid collision."}
{"id": "train_01753", "split": "train", "clip_key": "2020-0214-102601_001665_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "001665"}, "frames": ["2020-0214-102601_001665_movie_t-3.jpg", "2020-0214-102601_001665_movie_t-2.jpg", "2020-0214-102601_001665_movie_t-1.jpg", "2020-0214-102601_001665_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "The camera faces a narrow two-lane urban street with a solid yellow center line and no median; metal pedestrian rails edge both sides and the asphalt looks dry and smooth. Traffic is extremely light, with no moving vehicles or pedestrians entering the roadway. Directly ahead across the street sit a small shop entrance and a covered vending-machine area beside a short driveway, with a parked motorcycle by the door. No notable traffic signals or signs are visible, and no hazards appear.", "hazard_reasoning": "No hazards detected because the road is clear, there are no moving vehicles, pedestrians, or obstacles requiring driver action."}
{"id": "train_01754", "split": "train", "clip_key": "2020-0131-103016_082265_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "082265"}, "frames": ["2020-0131-103016_082265_movie_t-3.jpg", "2020-0131-103016_082265_movie_t-2.jpg", "2020-0131-103016_082265_movie_t-1.jpg", "2020-0131-103016_082265_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with several same-direction lanes and no median has smooth pavement and slow, stop-and-go flow approaching a signalized intersection. A white van directly ahead in the ego lane decelerates to a near stop because the traffic light ahead shows red, setting the pace for the ego car. In the adjacent right lane, a small green-tarp pickup is slightly ahead and creeps forward with the queue while staying in its lane. Farther ahead to the right, several vans inch toward the stop and form a short line. On the left sidewalk near a station structure, a few pedestrians walk and wait by the fence, remaining clear of the roadway.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of the red traffic lights ahead. The driver should reduce speed to maintain a safe distance and avoid a collision with the braking van."}
{"id": "train_01755", "split": "train", "clip_key": "titan_clip_770_000462_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_770_000462_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_770_000462_movie_t-3_augB1.jpg", "titan_clip_770_000462_movie_t-2_augB1.jpg", "titan_clip_770_000462_movie_t-1_augB1.jpg", "titan_clip_770_000462_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of pedestrian ahead", "environment_perception": "An urban side street with a single narrow undivided lane runs between buildings; the asphalt is worn but intact and traffic is light and slow. Ahead near the center, a pedestrian in gray walks away from the ego vehicle in the middle of the road, occupying the ego lane and constraining its pace. Farther ahead in the same direction, a white van proceeds slowly in a short queue behind other vehicles. On the right foreground, another pedestrian steps from the curb and walks diagonally toward the lane, briefly encroaching on the path. Parked vehicles line the left curb, including a red car near the ego vehicle, reducing clearance.", "hazard_reasoning": "There is a pedestrian wearing gray clothing, walking away from the ego car, in the middle of the road. The pedestrian's position in the travel lane may not be easily noticed, so the driver should be aware of the pedestrian ahead."}
{"id": "train_01756", "split": "train", "clip_key": "titan_clip_1128_000234_movie", "source": {"subset": "titan", "scenario": "clip_1128", "frame": "000234"}, "frames": ["titan_clip_1128_000234_movie_t-3.jpg", "titan_clip_1128_000234_movie_t-2.jpg", "titan_clip_1128_000234_movie_t-1.jpg", "titan_clip_1128_000234_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban residential lane with smooth asphalt runs between a brick building on the left and a tree-lined railing on the right, with no center line and very light vehicle traffic. The scene is pedestrian-dominated. On the right edge, a pedestrian in a blue T-shirt walks toward the ego vehicle along the roadway, potentially stepping into its path on the narrow carriageway. Slightly ahead near the center-right, another pedestrian approaches in the same direction of travel toward the ego car, reducing clearance. On the left edge, a pedestrian walks toward the ego vehicle close to the curb, also occupying part of the lane and constraining speed. A parked bicycle and small barriers sit on the right verge, narrowing the usable space.", "hazard_reasoning": "There is a pedestrian wearing a blue T-shirt and walking on the right side of the road, toward the ego car. The driver should slow down because the pedestrian is moving toward the vehicle's path and may step into the lane unexpectedly."}
{"id": "train_01757", "split": "train", "clip_key": "titan_clip_1379_000438_movie", "source": {"subset": "titan", "scenario": "clip_1379", "frame": "000438"}, "frames": ["titan_clip_1379_000438_movie_t-3.jpg", "titan_clip_1379_000438_movie_t-2.jpg", "titan_clip_1379_000438_movie_t-1.jpg", "titan_clip_1379_000438_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street runs beneath an elevated structure with no median and wet, patchy pavement; traffic is light and the lane is partially constricted by roadside works. Ahead near the ego lane, a pedestrian in a gray shirt crosses from the left to the right in front of the vehicle, moving into the path and prompting the ego car to slow. On the left, a large cement mixer truck is stopped partly in the lane with workers nearby, narrowing the roadway and constraining the ego's progress. Farther ahead in the same lane, two pedestrians walk away along the center of the street, remaining ahead of the ego vehicle and influencing its pace. Orange cones line the right edge and cluster around the truck, marking the temporary work zone.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, crossing the street in front of the ego car, from the left side to the right side. Because the pedestrian is entering your path, you should slow down to avoid a collision."}
{"id": "train_01758", "split": "train", "clip_key": "titan_clip_229_000048_movie", "source": {"subset": "titan", "scenario": "clip_229", "frame": "000048"}, "frames": ["titan_clip_229_000048_movie_t-3.jpg", "titan_clip_229_000048_movie_t-2.jpg", "titan_clip_229_000048_movie_t-1.jpg", "titan_clip_229_000048_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked sedan", "environment_perception": "A dense urban street with tall buildings narrows to a single brick-paved lane without a median, and traffic remains light. A black sedan is parked on the left side of the road, narrowing the usable lane as the ego vehicle draws level. Ahead in the same lane, a dark car moves slowly near midblock and sets the pace. Pedestrians travel on both sidewalks, including a person standing at a right-side entrance and several others by left-side shopfronts, all staying off the roadway. Orange cones line the left curb beside storefronts, further reducing lateral clearance.", "hazard_reasoning": "There is a black sedan parked on the left side of the road. The parked vehicle reduces the available lane width, so the driver should manoeuvre carefully to avoid collision."}
{"id": "train_01759", "split": "train", "clip_key": "2020-0220-151845_048742_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "048742"}, "frames": ["2020-0220-151845_048742_movie_t-3.jpg", "2020-0220-151845_048742_movie_t-2.jpg", "2020-0220-151845_048742_movie_t-1.jpg", "2020-0220-151845_048742_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated structure with smooth dry pavement and heavy, slow traffic; the left lane is narrowed by a cone-lined work area. A red flatbed truck directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle. To the right, a silver kei van moves slowly ahead in the adjacent lane beside the ego car, limiting a rightward lane change. Ahead-left, a white work truck and other vehicles inch along the taper from the work zone and merge toward the center lanes, feeding the queue. Overhead blue direction boards indicate route options about 200 m ahead.", "hazard_reasoning": "There is a red truck that has stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. You should stop to avoid a collision with the halted vehicle."}
{"id": "train_01760", "split": "train", "clip_key": "2020-0217-144444_005447_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "005447"}, "frames": ["2020-0217-144444_005447_movie_t-3.jpg", "2020-0217-144444_005447_movie_t-2.jpg", "2020-0217-144444_005447_movie_t-1.jpg", "2020-0217-144444_005447_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with left-hand traffic runs between mid-rise buildings, the pavement dry and intact, and traffic is heavy and stop-and-go. A yellow sedan directly ahead in the ego lane is stopped because of congestion, holding the ego car at a standstill. In the adjacent right lane, a black minivan a little ahead inches forward with the queue and stays just ahead of the ego vehicle. Alongside on the right, a dark van is nearly level with the ego car and pauses in the jam, limiting lateral room for a lane change. A fenced sidewalk lines the left edge with pedestrians walking behind the rail.", "hazard_reasoning": "There is a yellow sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver must stop to avoid a collision with the halted vehicle."}
{"id": "train_01761", "split": "train", "clip_key": "titan_clip_1228_000594_movie", "source": {"subset": "titan", "scenario": "clip_1228", "frame": "000594"}, "frames": ["titan_clip_1228_000594_movie_t-3.jpg", "titan_clip_1228_000594_movie_t-2.jpg", "titan_clip_1228_000594_movie_t-1.jpg", "titan_clip_1228_000594_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single lane and no median runs between close buildings; the pavement looks worn and traffic is light with no moving vehicles. A man in beige shorts and a black shirt walks ahead in the middle of the lane, moving away from the ego-vehicle and effectively controlling its pace, as another pedestrian on the left edge prompts him to keep to the center. The second pedestrian continues ahead-left along the green shoulder near the curb and remains close to the travel path. A small white car is parked along the left wall near them, slightly narrowing the lane. No salient traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a man dressed in beige shorts and a black shirt, walking in the middle of the road away from the ego-car because of another pedestrian walking on the left side. The driver should slow down to maintain safe distance and avoid colliding with the pedestrian in the roadway."}
{"id": "train_01762", "split": "train", "clip_key": "titan_clip_352_000510_movie", "source": {"subset": "titan", "scenario": "clip_352", "frame": "000510"}, "frames": ["titan_clip_352_000510_movie_t-3.jpg", "titan_clip_352_000510_movie_t-2.jpg", "titan_clip_352_000510_movie_t-1.jpg", "titan_clip_352_000510_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with no centerline and smooth pavement runs between mid-rise buildings, and traffic is light. A pedestrian wearing black pants, a cap, and a backpack steps from the left curb into the ego lane ahead, moving diagonally across and directly occupying the vehicle's path. Far ahead near a slight bend, an oncoming white van approaches at low speed and remains distant. Along the right curb, a person stands next to several parked bicycles by a storefront, stationary and close to the edge. No traffic signals are visible, and the roadway is otherwise clear.", "hazard_reasoning": "There is a pedestrian wearing black pants, a cap, and carrying a backpack, who is moving from the left side of the road, into the ego lane, in front of the ego-car. The driver should slow down because the pedestrian is entering the travel lane and may cross unpredictably."}
{"id": "train_01763", "split": "train", "clip_key": "2020-0127-132751_059815_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "059815"}, "frames": ["2020-0127-132751_059815_movie_t-3.jpg", "2020-0127-132751_059815_movie_t-2.jpg", "2020-0127-132751_059815_movie_t-1.jpg", "2020-0127-132751_059815_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the merging vehicle", "environment_perception": "An urban multi-lane arterial in a built-up area has two same-direction lanes with a double solid center divider and dry, smooth pavement; traffic is moderate and flowing, with light oncoming traffic to the right. Ahead in the left lane, a black minivan moves right to merge into the ego lane to pass a parked vehicle near the curb, briefly entering the ego path. Directly ahead, a white hatchback in the ego lane proceeds at a steady pace and limits the ego vehicle's speed. Farther ahead in the adjacent lane, a box truck travels more slowly, influencing the ongoing merge.", "hazard_reasoning": "There is a black minivan lane changing from the left lane, to the ego lane, because of a parked vehicle. The merging maneuver creates a potential conflict, so the driver should yield to the minivan to maintain safety."}
{"id": "train_01764", "split": "train", "clip_key": "titan_clip_314_000162_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_314_000162_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_314_000162_movie_t-3_augB1.jpg", "titan_clip_314_000162_movie_t-2_augB1.jpg", "titan_clip_314_000162_movie_t-1_augB1.jpg", "titan_clip_314_000162_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down and watch for pedestrian in roadway", "environment_perception": "A narrow urban back street with a single mixed-traffic lane is paved with blocks, lacks a center divider, and shows light vehicular flow with no cars ahead. Several pedestrians are in the roadway ahead moving away from the camera; among them, a tall man in a white shirt and black pants carries a backpack and walks in the middle because there is no clear sidewalk, so the group controls the ego vehicle's pace. A person stands at the left curb near a parking lot entrance and may step into the lane, making them relevant to the path. Another pedestrian on the right walks along the building edge in the same direction and stays near the side. Parking notices and storefront signs are visible, and a single cone sits on the right margin without blocking the lane.", "hazard_reasoning": "There is a tall man, wearing a white shirt and black pants, carrying a backpack, walking in the middle of the road, away from the ego car, because there is no sidewalk. As he walks in the roadway due to lack of sidewalk, the driver should slow down to avoid a collision."}
{"id": "train_01765", "split": "train", "clip_key": "2020-0207-101955_073691_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "073691"}, "frames": ["2020-0207-101955_073691_movie_t-3.jpg", "2020-0207-101955_073691_movie_t-2.jpg", "2020-0207-101955_073691_movie_t-1.jpg", "2020-0207-101955_073691_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban tunnel on a two-lane one-way road shows smooth dry pavement, with a dashed lane line, low posts along the left shoulder, and a concrete wall on the right; traffic is light as the scene moves toward a bright exit. A green truck ahead in the ego lane continues straight and gradually pulls away, constraining the ego vehicle's pace. Strong backlighting at the tunnel mouth reduces contrast and obscures detail beyond the exit.", "hazard_reasoning": "There is a green truck driving in the ego lane, away from the ego car. Maintain a safe distance as the lighting contrast may obscure its movement and reduce reaction time."}
{"id": "train_01766", "split": "train", "clip_key": "titan_clip_882_000588_movie", "source": {"subset": "titan", "scenario": "clip_882", "frame": "000588"}, "frames": ["titan_clip_882_000588_movie_t-3.jpg", "titan_clip_882_000588_movie_t-2.jpg", "titan_clip_882_000588_movie_t-1.jpg", "titan_clip_882_000588_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian walking in road", "environment_perception": "An urban commercial street with no marked centerline and smooth but patched asphalt runs straight ahead, with light same-direction traffic and many curbside deliveries on the left narrowing the roadway. A pedestrian wearing a gray shirt is ahead, starting near the right side and walking through the middle toward the left curb, briefly occupying the vehicle's path. A white box truck stands ahead along the left curb, its rear encroaching into the lane and constraining the available space. Farther ahead, several vans and cars line the left side and a short queue in the same direction creeps forward, setting a slow pace.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and walking in the middle of the road, toward the left side. The pedestrian may step further into the vehicle's path, so the driver should be aware and prepare to slow."}
{"id": "train_01767", "split": "train", "clip_key": "titan_clip_547_000234_movie", "source": {"subset": "titan", "scenario": "clip_547", "frame": "000234"}, "frames": ["titan_clip_547_000234_movie_t-3.jpg", "titan_clip_547_000234_movie_t-2.jpg", "titan_clip_547_000234_movie_t-1.jpg", "titan_clip_547_000234_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the pedestrian.", "environment_perception": "A narrow urban side street with no lane markings or divider runs between close buildings; the pavement is intact and traffic is light with no oncoming vehicles. Ahead near the right edge, a pedestrian wearing a white T-shirt walks toward the ego vehicle along the roadway and may encroach on the vehicle's path. Farther ahead by the left curb, another pedestrian also approaches while keeping to the side, creating only mild conflict. In the distance on the left, a small white van stands stopped at the curb, and bicycles are parked along the wall.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt and walking towards the ego car, in front of the ego car. This pedestrian may step into the vehicle's path, so the driver should yield to avoid a potential collision."}
{"id": "train_01768", "split": "train", "clip_key": "2020-0129-105040_000164_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "000164"}, "frames": ["2020-0129-105040_000164_movie_t-3.jpg", "2020-0129-105040_000164_movie_t-2.jpg", "2020-0129-105040_000164_movie_t-1.jpg", "2020-0129-105040_000164_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road with smooth asphalt passes mid-rise apartments, with dashed lane lines and light traffic and no median visible. A black van ahead in the ego lane drives away from the camera, steadily increasing the gap. A white flatbed truck is parked at the left curb just ahead, its rear corner in view but outside the moving lane. Two pedestrians walk along the far-side sidewalk behind a guardrail, parallel to traffic and well clear of the roadway. A blue parking sign and a small direction sign are visible on the sidewalk, and no traffic signals or unusual obstacles appear.", "hazard_reasoning": "There is a black van, driving in front of and away from the ego car. The van ahead may reduce speed unexpectedly, so the driver should slow down to maintain a safe following distance."}
{"id": "train_01769", "split": "train", "clip_key": "titan_clip_677_000288_movie", "source": {"subset": "titan", "scenario": "clip_677", "frame": "000288"}, "frames": ["titan_clip_677_000288_movie_t-3.jpg", "titan_clip_677_000288_movie_t-2.jpg", "titan_clip_677_000288_movie_t-1.jpg", "titan_clip_677_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban commercial street with tall buildings appears narrow and effectively single lane with no median, the pavement is smooth, and vehicular traffic is light throughout. Ahead in the center of the lane, a group of six pedestrians walks away from the ego vehicle, five wearing backpacks, occupying the road and limiting the vehicle's pace. On the right edge near the curb, a man and a child walk beside the group and stay near a parked silver van without entering the lane. A silver van is stopped at the curb on the right, slightly narrowing the available roadway.", "hazard_reasoning": "There are six male pedestrians walking together in a group, five of whom are wearing backpacks, walking in the middle of the road, away from the ego-car. The driver should carefully manoeuvre around them to avoid a collision, as they occupy the roadway and may not anticipate oncoming traffic."}
{"id": "train_01770", "split": "train", "clip_key": "titan_clip_1246_000096_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1246_000096_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1246_000096_movie_t-3_augB1.jpg", "titan_clip_1246_000096_movie_t-2_augB1.jpg", "titan_clip_1246_000096_movie_t-1_augB1.jpg", "titan_clip_1246_000096_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban two-way street with a painted center line passes storefronts on the left and a walled sidewalk with guardrails on the right; the pavement is dry and smooth, and traffic is light with no moving vehicles. A man wearing brown pants and a black T-shirt walks in the ego lane ahead, moving away near the center and constraining the ego car's pace. A white truck is parked on the right close to the camera, its body jutting slightly into the roadway and narrowing the passage. Farther ahead along the right-hand railing, a few pedestrians proceed in the same direction near the curb and may edge into the lane while passing the barriers.", "hazard_reasoning": "There is a man wearing a pair of brown pants and a black T-shirt, walking in the ego lane, in front of the ego car. Because the pedestrian is directly in the vehicle's path, the driver should carefully manoeuvre around him to avoid a collision."}
{"id": "train_01771", "split": "train", "clip_key": "titan_clip_214_000384_movie", "source": {"subset": "titan", "scenario": "clip_214", "frame": "000384"}, "frames": ["titan_clip_214_000384_movie_t-3.jpg", "titan_clip_214_000384_movie_t-2.jpg", "titan_clip_214_000384_movie_t-1.jpg", "titan_clip_214_000384_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single mixed-traffic lane and no median appears, the pavement smooth and dry. Traffic is light, with only parked cars lining the left curb and no moving vehicles ahead. On the right edge ahead, a pedestrian in a red T-shirt pushes a trolley away from the ego vehicle, staying close to the curb yet near the travel lane and potentially affecting passing. On the left near the curb, another pedestrian in a white shirt walks toward the camera beside the parked cars and may drift toward the lane. Several vehicles are parked along the left, narrowing the usable lane; no traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a red T-shirt, pushing a trolley on the right side of the road, away from the ego car. The pedestrian may step into the lane unpredictably, so the driver should slow down to maintain a safe stopping distance."}
{"id": "train_01772", "split": "train", "clip_key": "2020-0205-152530_041442_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "041442"}, "frames": ["2020-0205-152530_041442_movie_t-3.jpg", "2020-0205-152530_041442_movie_t-2.jpg", "2020-0205-152530_041442_movie_t-1.jpg", "2020-0205-152530_041442_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three lanes in the ego direction has smooth pavement and a low curb median with red bollards separating oncoming traffic on the right, and overall flow is heavy and bunching toward a distant intersection. A gray mid-size SUV directly ahead in the ego lane slows because of congestion ahead, effectively setting the ego vehicle's pace. A white kei van slightly ahead to the left proceeds straight in the adjacent lane at a similar speed without merging. On the far right, oncoming cars advance in a separate queue behind the divider, with no interaction with the ego lane.", "hazard_reasoning": "There is a gray mid-SUV slowing down in the ego-car lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_01773", "split": "train", "clip_key": "2020-0212-102546_027392_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "027392"}, "frames": ["2020-0212-102546_027392_movie_t-3.jpg", "2020-0212-102546_027392_movie_t-2.jpg", "2020-0212-102546_027392_movie_t-1.jpg", "2020-0212-102546_027392_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs under clear skies; the ego car proceeds in the left curb lane on dry, slightly worn pavement amid moderate traffic. A hedge borders the sidewalk and a planted strip sits near the center, with an elevated expressway ahead. A white van directly ahead in the ego lane slows near the curb to turn left, constraining the ego vehicle's pace. To the right, several cars in the middle lane continue straight and overtake, one silver sedan drawing slightly ahead alongside the ego car. Farther ahead in the right lane, a light-colored minivan maintains a steady straight path. Overhead lane-use signs indicate the left lane is left-turn only, the middle lanes go straight, and the right lane permits straight or right, matching the van's maneuver.", "hazard_reasoning": "There is a white van slowing in the ego lane, to turn left, in front of the ego car. The van's deceleration to execute a left turn could lead to a rapid speed difference with the ego-vehicle and increase collision risk, so the driver should slow down."}
{"id": "train_01774", "split": "train", "clip_key": "2020-0228-150133_069634_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "069634"}, "frames": ["2020-0228-150133_069634_movie_t-3.jpg", "2020-0228-150133_069634_movie_t-2.jpg", "2020-0228-150133_069634_movie_t-1.jpg", "2020-0228-150133_069634_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with two same-direction through lanes and a marked right-turn lane, no physical median, and smooth dry pavement approaches a signalized intersection where queued traffic begins to move. A black sedan directly ahead in the ego lane accelerates from the stop line as the light turns green, setting the pace for the ego vehicle. A white kei van in the adjacent left lane starts forward in parallel, remaining alongside and not encroaching on the ego path. A cyclist on the left sidewalk rides slowly toward the intersection, parallel to traffic and outside the roadway. The overhead signal for the ego approach shows green.", "hazard_reasoning": "There is a black sedan accelerating in the ego lane, because the traffic light has just turned green. Because the vehicle ahead is moving, you should follow it promptly to maintain safe spacing and continuous traffic flow."}
{"id": "train_01775", "split": "train", "clip_key": "2020-0206-101736_002813_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-101736_002813_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-101736_002813_movie_t-3_augB1.jpg", "2020-0206-101736_002813_movie_t-2_augB1.jpg", "2020-0206-101736_002813_movie_t-1_augB1.jpg", "2020-0206-101736_002813_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban commercial street has one lane each way and no median; the pavement is smooth and traffic flows slowly. An orange taxi directly ahead in the ego lane moves at low speed, setting the pace. To the left near the curb, a black motorcycle advances and then merges right into the ego lane because a small white truck is parked ahead, momentarily entering our path. In the opposing lane on the right, a silver van approaches steadily without deviating. The parked mini-truck with a handcart and cargo occupies the curbside space, creating a local obstruction.", "hazard_reasoning": "There is a black motorcycle lane changing from the left lane to the ego lane, because of a parked vehicle. The driver should stop immediately to avoid a side collision as the motorcyclist enters the ego lane."}
{"id": "train_01776", "split": "train", "clip_key": "2020-0220-102630_113549_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "113549"}, "frames": ["2020-0220-102630_113549_movie_t-3.jpg", "2020-0220-102630_113549_movie_t-2.jpg", "2020-0220-102630_113549_movie_t-1.jpg", "2020-0220-102630_113549_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with two lanes and no median runs between mid-rise buildings; the pavement looks smooth and traffic is slow. A red scooter is stopped directly ahead near the left edge of the ego lane as congestion holds the lane, constraining the ego vehicle. Just beyond it, a black minivan in the same direction sits nearly stationary in the center of the lane, setting the pace. Oncoming vehicles move in their right-hand lane at low speed, separated by the center line. Several parked trucks line the right curb but remain outside the ego lane.", "hazard_reasoning": "There is a red scooter stopped in front of the ego car in the ego lane, because of traffic congestion. The stopped scooter poses a risk of rear collision if not anticipated, so the driver needs to stop promptly."}
{"id": "train_01777", "split": "train", "clip_key": "titan_clip_426_000234_movie", "source": {"subset": "titan", "scenario": "clip_426", "frame": "000234"}, "frames": ["titan_clip_426_000234_movie_t-3.jpg", "titan_clip_426_000234_movie_t-2.jpg", "titan_clip_426_000234_movie_t-1.jpg", "titan_clip_426_000234_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single narrow lane each direction and no median has smooth asphalt and light traffic. The left shoulder hosts a construction work zone with cones that narrows the lane. Ahead on the left, a construction flagger in a safety vest waves the ego vehicle forward with an orange baton to pass the work area. Just beyond, an excavator loads a truck at the curb and its operation extends toward the ego lane, constraining the passage width. On the right sidewalk, an adult with a child and a stroller waits beside a parked black van, staying off the carriageway.", "hazard_reasoning": "There is a pedestrian wearing a safety vest and waving the ego car ahead with an orange stick, on the left side of the road, because of construction work. The driver should slow down to safely respond to the pedestrian directing traffic amid nearby construction activities."}
{"id": "train_01778", "split": "train", "clip_key": "2020-0203-114632_072462_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "072462"}, "frames": ["2020-0203-114632_072462_movie_t-3.jpg", "2020-0203-114632_072462_movie_t-2.jpg", "2020-0203-114632_072462_movie_t-1.jpg", "2020-0203-114632_072462_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road curves right, with a sound barrier along the left shoulder and a guardrail plus painted gore separating our lane from the main carriageway on the right; the pavement is dry with some patches and traffic is heavy and slow. Directly ahead, a silver van in the ego lane slows because a construction truck further ahead decelerates, and this pair constrains the ego vehicle's pace. Farther ahead in the same lane, the loaded truck continues to brake into congestion. To the right, a gray van and several trucks in the adjacent lane creep past alongside, reducing gaps for merging.", "hazard_reasoning": "There is a silver van slowing in the ego lane because of the truck slowing ahead on the road. You should slow down to maintain a safe following distance and avoid collisions with vehicles braking ahead."}
{"id": "train_01779", "split": "train", "clip_key": "2020-0206-101736_017719_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "017719"}, "frames": ["2020-0206-101736_017719_movie_t-3.jpg", "2020-0206-101736_017719_movie_t-2.jpg", "2020-0206-101736_017719_movie_t-1.jpg", "2020-0206-101736_017719_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane divided arterial with a landscaped median on the right has smooth pavement and moderate, steady traffic flow. A white truck with a green tarp ahead in the ego lane slows, constraining the ego vehicle's pace. A white van in the lane to the left continues straight and gradually overtakes while staying out of the ego lane. A small white car farther left proceeds ahead at a steady speed without changing lanes. Overhead blue direction signs with arrows are visible above the roadway.", "hazard_reasoning": "There is a white truck with a green tarp slowing down in the ego lane. The driver should slow down because the truck's reduced speed ahead increases the risk of a rear-end collision."}
{"id": "train_01780", "split": "train", "clip_key": "2020-0227-104226_025287_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "025287"}, "frames": ["2020-0227-104226_025287_movie_t-3.jpg", "2020-0227-104226_025287_movie_t-2.jpg", "2020-0227-104226_025287_movie_t-1.jpg", "2020-0227-104226_025287_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway corridor under an elevated structure has two same-direction lanes with a solid center line, smooth pavement, and light traffic. Ahead in the ego vehicle's lane, a blue truck continues forward and gradually pulls away because the space in front of it is clear. In the adjacent left lane, a larger white box truck travels at a similar speed, partly alongside the blue truck and the ego vehicle, limiting room to merge. No traffic signals or speed signs are evident, and the flanking wall on the left and guardrail on the right form a narrow channel without other hazards.", "hazard_reasoning": "There is a blue truck driving away from the ego car, because the road ahead is clear, in front of the truck. Follow the vehicle ahead to maintain a safe distance and be prepared to react if the truck brakes suddenly."}
{"id": "train_01781", "split": "train", "clip_key": "titan_clip_862_000528_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_862_000528_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_862_000528_movie_t-3_augB1.jpg", "titan_clip_862_000528_movie_t-2_augB1.jpg", "titan_clip_862_000528_movie_t-1_augB1.jpg", "titan_clip_862_000528_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the parked motorcycle.", "environment_perception": "An urban two-lane two-way street curves gently right, with a single center line, tight building fronts, and smooth asphalt; traffic flow is light. A white microvan ahead in the ego lane moves slowly through the bend and briefly eases off, setting the ego vehicle's pace. An oncoming car advances in the right lane around the same curve, staying behind the center line yet relevant because the roadway is narrow. A black motorcycle is parked on the left side by the storefronts, taking up curbside space and narrowing the pass. Several bicycles are racked along the right sidewalk but remain clear of the roadway.", "hazard_reasoning": "There is a black motorcycle parked on the left side of the road. It may obstruct the lane and require the driver to adjust their path, so the driver should carefully manoeuvre around it."}
{"id": "train_01782", "split": "train", "clip_key": "titan_clip_236_000318_movie", "source": {"subset": "titan", "scenario": "clip_236", "frame": "000318"}, "frames": ["titan_clip_236_000318_movie_t-3.jpg", "titan_clip_236_000318_movie_t-2.jpg", "titan_clip_236_000318_movie_t-1.jpg", "titan_clip_236_000318_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A dense urban street with tall buildings narrows to a single two-way lane with no median; the pavement is smooth and traffic is light. A large 30 speed marking is painted on the roadway. Far ahead on the left side, a man in black pants and a blue shirt cycles toward the ego vehicle along the left edge of the lane, creating oncoming conflict with the ego path. On the near right, a silver minivan is stopped at the curb protruding slightly into the lane, narrowing the available passage. At the near left, a pedestrian holding an umbrella walks along the curb close to the roadway. Rows of parked bicycles line the right side.", "hazard_reasoning": "There is a man wearing black pants and a blue shirt and cycling on the left side of the road, towards ego car. The cyclist is approaching from the left and may cross into the vehicle's path, requiring careful maneuvering to avoid a collision."}
{"id": "train_01783", "split": "train", "clip_key": "2020-0207-101955_112218_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_112218_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_112218_movie_t-3_augB1.jpg", "2020-0207-101955_112218_movie_t-2_augB1.jpg", "2020-0207-101955_112218_movie_t-1_augB1.jpg", "2020-0207-101955_112218_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial runs beneath an elevated expressway, with two same-direction lanes, a concrete barrier on the right, and a coned taper closing the left edge; the pavement is good and traffic is moderate with brief slowdowns. Directly ahead in the ego lane a blue sedan slows because a small truck farther ahead is decelerating near the merge, constraining the lane. In the adjacent right lane a white minivan travels slightly ahead at a steady pace and continues straight without interacting. Farther left a large box truck creeps along the coned area, keeping the shoulder crowded. Overhead directional signs are visible; no signals are in view.", "hazard_reasoning": "There is a blue sedan slowing in the ego lane, because of the truck slowing down ahead. The sedan's deceleration signals a potential sudden braking event ahead, so you should slow down to maintain a safe following distance."}
{"id": "train_01784", "split": "train", "clip_key": "2020-0129-144857_080053_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "080053"}, "frames": ["2020-0129-144857_080053_movie_t-3.jpg", "2020-0129-144857_080053_movie_t-2.jpg", "2020-0129-144857_080053_movie_t-1.jpg", "2020-0129-144857_080053_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban arterial with three same-direction lanes and a segregated right-turn pocket runs on dry pavement, with a fence-lined median separating oncoming traffic to the far right; overall flow is moderate and slows toward a signalized intersection. A white sedan directly ahead in the ego lane is stopped because the traffic light ahead shows red, holding the ego car. A small white dump truck ahead in the left lane proceeds straight at low speed parallel to the ego path without merging. Farther ahead, a short queue of cars across the through lanes creeps toward the intersection. Overhead lane-use signs indicate left-turn, through, and right-turn directions.", "hazard_reasoning": "There is a white sedan stopped in front of the ego-car, in the ego lane, because of the red traffic light ahead at the intersection. Driver should stop for the red light ahead to avoid collision and safely proceed when it turns green."}
{"id": "train_01785", "split": "train", "clip_key": "titan_clip_178_000102_movie", "source": {"subset": "titan", "scenario": "clip_178", "frame": "000102"}, "frames": ["titan_clip_178_000102_movie_t-3.jpg", "titan_clip_178_000102_movie_t-2.jpg", "titan_clip_178_000102_movie_t-1.jpg", "titan_clip_178_000102_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with no median runs between buildings; the asphalt is smooth and traffic is light, but parked vehicles line the right curb and narrow the lane. Ahead in the ego path, a pedestrian in a white shirt walks away in the middle of the road, diverted there by a parked vehicle and occupying the lane. Farther ahead near the center, a small white truck appears stationary, further constricting passage. On the near right, another pedestrian stands at a building entrance close to the curb.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking in the middle of the road, away from the ego car, because of the parked vehicle. The driver should slow down to avoid a potential collision with the pedestrian crossing the lane."}
{"id": "train_01786", "split": "train", "clip_key": "2020-0131-103016_075827_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "075827"}, "frames": ["2020-0131-103016_075827_movie_t-3.jpg", "2020-0131-103016_075827_movie_t-2.jpg", "2020-0131-103016_075827_movie_t-1.jpg", "2020-0131-103016_075827_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial carries same-direction traffic, separated from oncoming lanes by a guardrail and trees to the right; the dry pavement looks smooth and flow is moderate as the view passes beneath a pedestrian overpass. A small box truck directly ahead in the ego lane proceeds steadily and sets the pace. On the right, a white van draws alongside and then edges ahead in the adjacent lane, remaining relevant because it may enter the ego lane. To the left, a black tall van slightly ahead moves more slowly in a short queue near the curb, limiting space for a left merge. No unusual signs, work zones, or obstacles are apparent.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01787", "split": "train", "clip_key": "2020-0213-143552_009908_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009908"}, "frames": ["2020-0213-143552_009908_movie_t-3.jpg", "2020-0213-143552_009908_movie_t-2.jpg", "2020-0213-143552_009908_movie_t-1.jpg", "2020-0213-143552_009908_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way multi-lane road with no physical median stretches ahead, the pavement smooth and dry with light to moderate flow. A black hatchback ahead in the ego lane proceeds straight at a steady pace, loosely setting our speed. Several oncoming cars in the right-side lanes approach and pass without drifting toward the center, posing no immediate conflict. A small white car passes very close on the near right edge traveling toward us before leaving the frame. A circular speed-limit sign is posted on the left sidewalk.", "hazard_reasoning": "No hazards are present in the scene and traffic lights are green, so the driver can proceed without special caution."}
{"id": "train_01788", "split": "train", "clip_key": "2020-0220-102630_121790_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "121790"}, "frames": ["2020-0220-102630_121790_movie_t-3.jpg", "2020-0220-102630_121790_movie_t-2.jpg", "2020-0220-102630_121790_movie_t-1.jpg", "2020-0220-102630_121790_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane per direction and no median runs through low-rise buildings; pavement looks smooth and traffic moves slowly. A black hatchback directly ahead in the left-side ego lane is stopped because of traffic congestion, holding the ego vehicle. An SUV approaches in the oncoming lane to the right at moderate speed, continuing straight and staying in its lane. A white car is near the right curb in the oncoming lane, close to the edge and narrowing that side. A pedestrian stands on the left sidewalk beside the buildings, not entering the roadway.", "hazard_reasoning": "There is a black hatchback stopped in the go lane, because of traffic congestion, in front of the ego car. Driver should stop because the halted vehicle ahead signals congestion and failing to stop may cause a collision."}
{"id": "train_01789", "split": "train", "clip_key": "titan_clip_1259_000240_movie", "source": {"subset": "titan", "scenario": "clip_1259", "frame": "000240"}, "frames": ["titan_clip_1259_000240_movie_t-3.jpg", "titan_clip_1259_000240_movie_t-2.jpg", "titan_clip_1259_000240_movie_t-1.jpg", "titan_clip_1259_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "manoeuvre around pedestrian safely", "environment_perception": "A narrow urban street lined with shops forms a two-way carriageway without a median and with worn asphalt; traffic is light and slow, and the oncoming side remains empty. A white van travels ahead in the same direction near the center of the road, gradually pulling away and loosely setting the pace. On the left side of the road, a pedestrian wearing a white shirt and green pants with a backpack walks away from the ego vehicle along the edge of the lane. Farther ahead, a cyclist rides in the same direction near the right curb, keeping to the side. Orange cones and a small barricade sit on the right sidewalk, but the travel lane is unobstructed.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, green pants, and carrying a backpack, walking on the left side of the road, away from the ego car. The pedestrian could step into the lane unpredictably, so the driver should manoeuvre around them to maintain safety."}
{"id": "train_01790", "split": "train", "clip_key": "2020-0213-143552_037086_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "037086"}, "frames": ["2020-0213-143552_037086_movie_t-3.jpg", "2020-0213-143552_037086_movie_t-2.jpg", "2020-0213-143552_037086_movie_t-1.jpg", "2020-0213-143552_037086_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs under an elevated expressway, with two same-direction lanes on smooth red pavement curving right and a guardrail separating an adjacent roadway; traffic is moderate and bunches slightly. A white box truck is directly ahead in the ego lane and slows because traffic queues form ahead, constraining the ego car's pace. Ahead-left near the curb, a small white van travels slowly in the same direction and helps keep the lane moving cautiously. On the separated roadway to the right, several vehicles proceed steadily without interacting with the ego lane. Overhead blue direction signs, chevron boards for the bend, and a pedestrian overpass are visible.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_01791", "split": "train", "clip_key": "titan_clip_176_000456_movie", "source": {"subset": "titan", "scenario": "clip_176", "frame": "000456"}, "frames": ["titan_clip_176_000456_movie_t-3.jpg", "titan_clip_176_000456_movie_t-2.jpg", "titan_clip_176_000456_movie_t-1.jpg", "titan_clip_176_000456_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single narrow lane in each direction, no median, and smooth asphalt shows light traffic as the ego car approaches a zebra crossing between mid-rise buildings. Ahead in the same left lane, a box truck is stopped at the crossing, constraining the lane and pace. At the crosswalk, three pedestrians wearing white shirts and black pants cross from right to left in front of the ego vehicle, and the car waits. Parked bicycles and curbside objects line the sidewalks, with no other moving traffic close by.", "hazard_reasoning": "There are three pedestrians wearing white shirts and black pants, crossing the street at the pedestrian crossing, from the right side to the left side. Driver should stop to let pedestrians safely cross."}
{"id": "train_01792", "split": "train", "clip_key": "2020-0207-151349_019143_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "019143"}, "frames": ["2020-0207-151349_019143_movie_t-3.jpg", "2020-0207-151349_019143_movie_t-2.jpg", "2020-0207-151349_019143_movie_t-1.jpg", "2020-0207-151349_019143_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs between tall buildings; the pavement is smooth and traffic moves slowly in a bunch near an overhead pedestrian bridge. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. A black SUV slightly ahead in the adjacent right lane creeps forward in parallel with the truck, occupying the space beside the ego vehicle. A large coach bus stands at the far-right curb beyond a low divider, stationary and outside the travel lanes.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. You should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_01793", "split": "train", "clip_key": "titan_clip_797_000330_movie", "source": {"subset": "titan", "scenario": "clip_797", "frame": "000330"}, "frames": ["titan_clip_797_000330_movie_t-3.jpg", "titan_clip_797_000330_movie_t-2.jpg", "titan_clip_797_000330_movie_t-1.jpg", "titan_clip_797_000330_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban two-way street with one narrow lane per direction and no median runs between sidewalks and railings; the pavement is smooth and traffic is light as the ego vehicle approaches a zebra crosswalk. Ahead at the crosswalk, a pedestrian wearing a white shirt crosses from the left to the right, moving through the ego lane and governing the vehicle's approach. Farther up the road in the opposite lane, a white car comes toward the camera at low speed and continues straight, remaining clear of the ego path. Another person walks along the left sidewalk near the greenery without stepping into the road. A blue pedestrian-crossing sign is posted on the left by the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and crossing the street, from the left side to the right side, ahead at the crosswalk. You should yield because the pedestrian is on the crosswalk and has the right of way."}
{"id": "train_01794", "split": "train", "clip_key": "titan_clip_974_000372_movie", "source": {"subset": "titan", "scenario": "clip_974", "frame": "000372"}, "frames": ["titan_clip_974_000372_movie_t-3.jpg", "titan_clip_974_000372_movie_t-2.jpg", "titan_clip_974_000372_movie_t-1.jpg", "titan_clip_974_000372_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way street narrows to a railway level crossing with metal plates and intact pavement, and the ego vehicle waits before the tracks while vehicle traffic is light but pedestrian flow is heavy. Several pedestrians ahead cross both directions over the tracks in the ego lane, steadily walking through the path and preventing forward movement. On the left side, a pedestrian in a white shirt and black pants carries a bag and walks away from the ego car along the edge, remaining outside the lane. To the right of the lane, a small group walks toward the far sidewalk after crossing, clearing the path gradually. Railway crossing masts with gates and warning lights stand on both sides and dominate the scene.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a bag, and walking on the left side of the road, away from the ego car. The pedestrian might step into the vehicle's path unexpectedly, so the driver should manoeuvre carefully around them."}
{"id": "train_01795", "split": "train", "clip_key": "titan_clip_1339_000474_movie", "source": {"subset": "titan", "scenario": "clip_1339", "frame": "000474"}, "frames": ["titan_clip_1339_000474_movie_t-3.jpg", "titan_clip_1339_000474_movie_t-2.jpg", "titan_clip_1339_000474_movie_t-1.jpg", "titan_clip_1339_000474_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "be cautious of cyclist crossing ahead", "environment_perception": "An urban multi-lane road runs straight between office buildings with smooth pavement and light same-direction traffic. On the left side of the intersection, a cyclist rides out across the crosswalk toward the ego vehicle, crossing the street and potentially entering the ego lane. A pedestrian just ahead on the left walks along the curb toward the intersection, edging slightly into the roadway and remaining close to the ego path. Farther ahead to the right, a white van in the curb lane moves slowly while another car travels alongside it, creating mild speed variation but leaving the ego lane ahead mostly clear.", "hazard_reasoning": "There is a female cyclist, crossing the street, on the left side of the intersection, riding towards the ego-car, because there is a crosswalk. The cyclist is entering the vehicle's path and may reach the road ahead, so the driver should be cautious."}
{"id": "train_01796", "split": "train", "clip_key": "2020-0204-150838_057950_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "057950"}, "frames": ["2020-0204-150838_057950_movie_t-3.jpg", "2020-0204-150838_057950_movie_t-2.jpg", "2020-0204-150838_057950_movie_t-1.jpg", "2020-0204-150838_057950_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway ramp with a single lane runs between concrete barriers under elevated structures; the dry pavement is narrow and traffic is slow due to congestion ahead. A gray coach bus directly ahead in the ego lane slows with brake lights on, constraining the ego vehicle's pace because traffic backs up further forward. On a separated roadway to the right, several cars move slowly in the same direction behind the barrier and remain uninvolved. No salient traffic signals or signs are visible.", "hazard_reasoning": "There is a gray bus that is slowing down in the ego-car lane because of traffic congestion ahead. Slow down to maintain a safe following distance and avoid a potential collision."}
{"id": "train_01797", "split": "train", "clip_key": "2020-0220-102630_018532_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "018532"}, "frames": ["2020-0220-102630_018532_movie_t-3.jpg", "2020-0220-102630_018532_movie_t-2.jpg", "2020-0220-102630_018532_movie_t-1.jpg", "2020-0220-102630_018532_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial carries two same-direction lanes with no median, smooth dry pavement, and heavy stop-and-go flow. A white sedan directly ahead in the ego lane is stopped because congestion stretches forward, holding the ego car. Farther ahead in the adjacent right lane, a tall box truck and a queue of vans remain nearly stationary, limiting gaps for lane changes. A small hatchback to the right of the ego vehicle waits alongside, pacing the queue and keeping close to the lane line. A 50 km/h speed-limit sign on the left roadside is visible, but traffic conditions keep speeds near zero.", "hazard_reasoning": "There is a white sedan stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead on the road. The stopped vehicle indicates slow-moving or halted traffic ahead, requiring the driver to stop to avoid collision."}
{"id": "train_01798", "split": "train", "clip_key": "titan_clip_616_000330_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_616_000330_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_616_000330_movie_t-3_augB1.jpg", "titan_clip_616_000330_movie_t-2_augB1.jpg", "titan_clip_616_000330_movie_t-1_augB1.jpg", "titan_clip_616_000330_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial side street forms a single narrow two-way lane with no median and smooth pavement; traffic is light as the ego vehicle rolls slowly ahead. A cyclist wearing a white shirt approaches on the right side of the road, riding toward the ego vehicle near the middle and may intrude into the ego lane. Slightly ahead and a bit right of center, two pedestrians walk along the roadway away from the camera, staying near the travel path and constraining the available space.", "hazard_reasoning": "There is a cyclist wearing a white shirt, cycling on the right side of the road, towards the ego car. The cyclist is approaching the vehicle's path and could impede its movement, so the driver should slow down to maintain a safe distance."}
{"id": "train_01799", "split": "train", "clip_key": "titan_clip_1328_000264_movie", "source": {"subset": "titan", "scenario": "clip_1328", "frame": "000264"}, "frames": ["titan_clip_1328_000264_movie_t-3.jpg", "titan_clip_1328_000264_movie_t-2.jpg", "titan_clip_1328_000264_movie_t-1.jpg", "titan_clip_1328_000264_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction and no median comes into view, the asphalt worn and patched, and overall traffic remains light. A silver hatchback is stopped ahead in the ego lane directly in front of the ego car, holding the ego vehicle's position. Farther ahead along the same-direction lane to the left, a white van sits near the curb and stays stationary, not blocking the path unless the ego turns onto the main road. In the opposite lane, a distant car proceeds away, offering no interaction. A 30 speed-limit sign and a pedestrian crossing sign are posted at the corner. The building and shrub on the near right corner partially obscure sightlines into the intersecting street.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, in front of the ego car. The silver hatchback ahead is stationary in your lane, requiring you to slow down to maintain safety and avoid a collision."}
{"id": "train_01800", "split": "train", "clip_key": "titan_clip_164_000162_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_164_000162_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_164_000162_movie_t-3_augB1.jpg", "titan_clip_164_000162_movie_t-2_augB1.jpg", "titan_clip_164_000162_movie_t-1_augB1.jpg", "titan_clip_164_000162_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow", "environment_perception": "A narrow urban back street with unmarked single-lane pavement runs straight between closely spaced buildings; the surface looks slightly worn and traffic is very light. Ahead in the ego lane, a male pedestrian in a white shirt and black pants walks away from the camera carrying a coat, using the roadway because there is no sidewalk, and he stays in the vehicle's path, constraining the pace. Utility poles, shutters, and potted plants line the edges and reduce lateral clearance, but no traffic signals or other vehicles appear.", "hazard_reasoning": "There is a male pedestrian in a white shirt and black pants, carrying a coat in his hands, walking away from the ego-car, in the ego lane, because there is no sidewalk. The driver should slow down because the pedestrian is walking in the center of the lane and may step into the vehicle's path unexpectedly."}
{"id": "train_01801", "split": "train", "clip_key": "2020-0213-143552_024293_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "024293"}, "frames": ["2020-0213-143552_024293_movie_t-3.jpg", "2020-0213-143552_024293_movie_t-2.jpg", "2020-0213-143552_024293_movie_t-1.jpg", "2020-0213-143552_024293_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane signalized intersection with wide zebra crossings and smooth pavement is ahead; the ego vehicle waits at the stop line in left-side traffic, and flow is moderate. A black motorcycle is stopped directly ahead in the ego lane because the signal facing us shows red. Pedestrians cross the crosswalk ahead from left to right and from the far side toward us, occupying the space in front of the stopped vehicles. Perpendicular traffic moves across the junction from right to left, including a black taxi and a red SUV, passing through on their green and blocking our path. A white van stands at the front left in the adjacent lane, also halted at the light.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego car in the ego lane, because of a red light ahead. You should stop to maintain a safe distance and comply with the red traffic signal."}
{"id": "train_01802", "split": "train", "clip_key": "titan_clip_1127_000072_movie", "source": {"subset": "titan", "scenario": "clip_1127", "frame": "000072"}, "frames": ["titan_clip_1127_000072_movie_t-3.jpg", "titan_clip_1127_000072_movie_t-2.jpg", "titan_clip_1127_000072_movie_t-1.jpg", "titan_clip_1127_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban residential street with no centerline runs beside a tree-lined canal, the pavement smooth and dry, and traffic is light with no other vehicles in view. The ego car proceeds along a very narrow lane bordered by buildings on the left and a guardrail on the right. On the right edge just ahead, a pedestrian in blue pants and a gray shirt walks away from the ego vehicle along the roadway where there is no sidewalk, close to the travel path and may enter the lane. Farther ahead near the middle of the road, another pedestrian walks away in the same direction and could constrain speed. On the left edge ahead, a third pedestrian moves along the curb by the building. A roadside convex mirror and a pedestrian zone sign are visible.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a gray shirt, walking on the right side of the road, away from the ego car, because there is no sidewalk. The driver should carefully maneuver to avoid colliding with the pedestrian on the roadway."}
{"id": "train_01803", "split": "train", "clip_key": "2020-0129-105040_054589_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "054589"}, "frames": ["2020-0129-105040_054589_movie_t-3.jpg", "2020-0129-105040_054589_movie_t-2.jpg", "2020-0129-105040_054589_movie_t-1.jpg", "2020-0129-105040_054589_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban junction with smooth pavement curves right into a separated slip lane beside a signalized approach, and traffic is slow with a short queue. The ego-vehicle is in the right-curving lane divided from the adjacent lane by solid lines and an island with a guardrail. Ahead to the left, a line of same-direction vehicles-two small vans followed by a larger box truck-wait under a red traffic light, moving slowly and occupying the left lane. A refrigerated delivery truck is also stopped farther left at the head of the queue. Farther ahead beyond the barrier, a white car travels on the cross road but remains distant and separated from the ego path. The overhead signal facing the queued approach shows red, while the slip lane to the right is clear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01804", "split": "train", "clip_key": "2020-0127-132751_087112_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "087112"}, "frames": ["2020-0127-132751_087112_movie_t-3.jpg", "2020-0127-132751_087112_movie_t-2.jpg", "2020-0127-132751_087112_movie_t-1.jpg", "2020-0127-132751_087112_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the slowing truck", "environment_perception": "An urban two-way road with a single lane per direction runs past low-rise buildings, divided by a raised median with bollards; the pavement is dry and traffic appears moderate. A blue mini-truck ahead in the ego lane slows while moving away, so it governs the ego vehicle's pace. Farther ahead in the same lane, a light gray truck continues steadily up the slight rise, forming a short queue in front. On the opposite carriageway to the right of the median, a red hatchback approaches and passes in its lane without interacting. The central barrier and hatched area mark the separation near a tapering section.", "hazard_reasoning": "There is a blue truck slowing in the left lane, moving away from the ego car. Because the truck is decelerating, the driver should be aware and ready to adjust speed to maintain a safe following distance."}
{"id": "train_01805", "split": "train", "clip_key": "titan_clip_1237_000066_movie", "source": {"subset": "titan", "scenario": "clip_1237", "frame": "000066"}, "frames": ["titan_clip_1237_000066_movie_t-3.jpg", "titan_clip_1237_000066_movie_t-2.jpg", "titan_clip_1237_000066_movie_t-1.jpg", "titan_clip_1237_000066_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on road", "environment_perception": "An urban two-way street with a single narrow lane each direction and no median runs past shops and apartments; pavement is smooth and traffic is light. Large yellow 20 is painted on the road. Ahead on the left edge in the ego lane, a pedestrian carrying a backpack and wearing a cap walks away from the camera along the carriageway, close to the path and constraining speed. On the right at the curb near the camera, another pedestrian walks toward the camera alongside the roadway but remains off the lane. A white van is parked at the left curb near the foreground and a small box truck stands farther ahead in the same lane, reducing available space.", "hazard_reasoning": "There is a pedestrian carrying a backpack and wearing a cap, walking on the left side of the road. The pedestrian could step into the vehicle's path unexpectedly, so the driver should remain cautious and monitor their movement closely in line with the warning."}
{"id": "train_01806", "split": "train", "clip_key": "titan_clip_556_000132_movie", "source": {"subset": "titan", "scenario": "clip_556", "frame": "000132"}, "frames": ["titan_clip_556_000132_movie_t-3.jpg", "titan_clip_556_000132_movie_t-2.jpg", "titan_clip_556_000132_movie_t-1.jpg", "titan_clip_556_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the trolley", "environment_perception": "An urban back street with a narrow two-way carriageway, no centerline, smooth pavement, and very light traffic. Ahead on the left, a man wearing an orange shirt pushes a trolley away from the ego vehicle along the lane, occupying part of the path and slowing the approach. Farther ahead toward the right side, a bicyclist comes toward the ego vehicle as oncoming traffic, holding a steady line. The right side opens into a small parking lot, and utility poles sit close to the curb, with no other notable obstacles.", "hazard_reasoning": "There is a man wearing black pants and an orange shirt, and pushing a trolley away from the ego car, on the left side of the road. The trolley and pedestrian may move unpredictably into the vehicle's path, so the driver should manoeuvre around it to maintain safety."}
{"id": "train_01807", "split": "train", "clip_key": "2020-0129-105040_068870_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "068870"}, "frames": ["2020-0129-105040_068870_movie_t-3.jpg", "2020-0129-105040_068870_movie_t-2.jpg", "2020-0129-105040_068870_movie_t-1.jpg", "2020-0129-105040_068870_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the cyclist", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid centerline runs between low-rise buildings; the pavement is dry and smooth and traffic is light with no oncoming vehicles during the clip. Ahead on the left edge of the ego lane, a woman in a maroon shirt and white pants rides a bicycle away from the ego car, hugging the curb and potentially constraining the ego vehicle's speed. On the right sidewalk, a pedestrian walks forward behind the roadside railings, remaining clear of the carriageway. An overhead circular sign shows 40, and continuous white railings line both sides of the road.", "hazard_reasoning": "There is a woman wearing a maroon shirt and white pants and cycling on the left side of the road, away from the ego car. The driver should manoeuvre around the cyclist to maintain a safe distance and avoid a potential collision."}
{"id": "train_01808", "split": "train", "clip_key": "2020-0227-104226_085441_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "085441"}, "frames": ["2020-0227-104226_085441_movie_t-3.jpg", "2020-0227-104226_085441_movie_t-2.jpg", "2020-0227-104226_085441_movie_t-1.jpg", "2020-0227-104226_085441_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light due to queued traffic", "environment_perception": "An urban two-way arterial with two lanes per direction runs between noise barriers and mid-rise buildings; pavement is dry and the flow in the ego direction is heavy and slow. A painted and striped median separates oncoming traffic. A red hatchback directly ahead in the ego lane slows to a crawl, constraining the ego vehicle's pace. To the left, a white van in the adjacent same-direction lane also creeps forward, roughly parallel with the ego car and may merge back due to limited space. On the right, a large oncoming truck proceeds steadily in its near-right lane, separated by the median but visually close. Farther ahead, a signal shows red over the ego lane, and traffic bunches toward it, reinforcing the congestion.", "hazard_reasoning": "There is a red traffic light in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with halted traffic at the red light."}
{"id": "train_01809", "split": "train", "clip_key": "2020-0127-132751_082609_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "082609"}, "frames": ["2020-0127-132751_082609_movie_t-3.jpg", "2020-0127-132751_082609_movie_t-2.jpg", "2020-0127-132751_082609_movie_t-1.jpg", "2020-0127-132751_082609_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban four-lane divided road with a raised median and a separated blue bike lane on the left appears dry and in good condition, and traffic flows lightly. A green covered truck ahead in the ego lane slows, constraining the ego car's pace. An oncoming truck near the median on the right proceeds along the opposite carriageway but stays separated by the divider. Parked cars sit in bays along the left side and remain outside the travel lane. No prominent traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a green truck slowing in the ego lane, in front of the ego car. The truck's reduced speed could lead to a rear-end collision if the driver does not adjust their speed now, so the driver should slow down to maintain a safe following distance."}
{"id": "train_01810", "split": "train", "clip_key": "titan_clip_705_000348_movie", "source": {"subset": "titan", "scenario": "clip_705", "frame": "000348"}, "frames": ["titan_clip_705_000348_movie_t-3.jpg", "titan_clip_705_000348_movie_t-2.jpg", "titan_clip_705_000348_movie_t-1.jpg", "titan_clip_705_000348_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the parked truck.", "environment_perception": "An urban side street with a single undivided narrow lane and smooth pavement appears quiet with very light traffic as the ego vehicle moves slowly along the center. A green-and-yellow truck is parked along the left curb and protrudes into the lane, narrowing the passage and constraining the ego vehicle's path. A pedestrian ahead on the left walks away along the building edge near the truck and could step into the lane as the car passes. Cardboard boxes are stacked on the ground beside the truck with some near the roadway, and a restaurant signboard on the right juts out at the curb but remains outside the travel lane.", "hazard_reasoning": "There is a green-and-yellow truck parked on the left side of the road. The parked truck blocks part of the lane and limits visibility of potential hazards ahead, so the driver must manoeuvre carefully around it."}
{"id": "train_01811", "split": "train", "clip_key": "titan_clip_193_000876_movie", "source": {"subset": "titan", "scenario": "clip_193", "frame": "000876"}, "frames": ["titan_clip_193_000876_movie_t-3.jpg", "titan_clip_193_000876_movie_t-2.jpg", "titan_clip_193_000876_movie_t-1.jpg", "titan_clip_193_000876_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to yield to pedestrian", "environment_perception": "An urban two-way street with one lane each direction and no median runs between mid-rise buildings; the asphalt looks smooth and traffic is light. Parked vehicles line both curbs. Ahead, a pedestrian in a gray shirt and blue pants runs from the right side toward the left across the middle of the road, entering the left-hand ego lane and directly affecting its path. Farther ahead, a car approaches in the oncoming lane at a steady pace, remaining in its lane. Near the right curb, another person stands beside a parked van and waits without stepping into the roadway.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and blue pants, running in the middle of the road, from the right side to the left side. The pedestrian's unexpected crossing creates a collision risk, so the driver should slow down to yield to the pedestrian and avoid impact."}
{"id": "train_01812", "split": "train", "clip_key": "2020-0228-102841_081578_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "081578"}, "frames": ["2020-0228-102841_081578_movie_t-3.jpg", "2020-0228-102841_081578_movie_t-2.jpg", "2020-0228-102841_081578_movie_t-1.jpg", "2020-0228-102841_081578_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban multi-lane road with painted medians and chevron zones has smooth pavement and heavy, mostly stationary traffic near an intersection. Directly ahead in the ego lane, a purple motorcycle is stopped, waiting at a red signal and blocking the ego vehicle's path. Slightly farther ahead, a small box truck in the same direction sits stationary in the queue, keeping speeds low. To the right, another motorcycle filters forward between lanes and edges ahead, which may bring it into the ego lane. On the left, a white sedan in the adjacent lane remains stopped alongside.", "hazard_reasoning": "There is a purple motorcycle stopped in the ego lane, because of the red traffic light. The motorcycle is stationary due to a red light directly ahead in your lane, requiring you to stop to prevent a collision and obey the traffic signal."}
{"id": "train_01813", "split": "train", "clip_key": "2020-0217-110854_004210_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "004210"}, "frames": ["2020-0217-110854_004210_movie_t-3.jpg", "2020-0217-110854_004210_movie_t-2.jpg", "2020-0217-110854_004210_movie_t-1.jpg", "2020-0217-110854_004210_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with one narrow lane in each direction and no median stretches ahead, the worn pavement leading through slow, queued traffic. A white sedan directly ahead in the ego lane slows with brake lights because congestion forms in front of it. Farther ahead in the same direction, a white box truck creeps and occasionally stops, creating the queue that constrains the sedan and the ego vehicle. Pedestrians on both sidewalks walk and stand near storefronts close to the curb, and parked bicycles plus roadside scaffolding line the right side.", "hazard_reasoning": "There is a white sedan slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. You should slow down to maintain a safe following distance and avoid a rear-end collision under these conditions."}
{"id": "train_01814", "split": "train", "clip_key": "2020-0207-101955_054216_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "054216"}, "frames": ["2020-0207-101955_054216_movie_t-3.jpg", "2020-0207-101955_054216_movie_t-2.jpg", "2020-0207-101955_054216_movie_t-1.jpg", "2020-0207-101955_054216_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with left-side driving approaches a signalized intersection; the pavement looks good and traffic is heavy with slow movement near the stop line. A black sedan directly ahead in the ego lane slows and inches forward because of slow moving traffic ahead in the same lane, setting the ego car's pace. In the adjacent same-direction lane to the left, a white kei van and other cars also creep forward in the queue alongside the ego vehicle. On the right side of the roadway, an oncoming white van proceeds through the intersection toward the camera without impeding the ego lane. Overhead traffic signals are visible at the junction.", "hazard_reasoning": "There is a black sedan that is slowing down in front of the ego car because of slow moving traffic ahead in the ego lane. The driver should slow down to maintain a safe distance and avoid collision in congested traffic."}
{"id": "train_01815", "split": "train", "clip_key": "2020-0225-145150_038345_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "038345"}, "frames": ["2020-0225-145150_038345_movie_t-3.jpg", "2020-0225-145150_038345_movie_t-2.jpg", "2020-0225-145150_038345_movie_t-1.jpg", "2020-0225-145150_038345_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes and a fenced median has dry, smooth pavement and moderate flow as vehicles approach a signalized intersection. A blue truck directly ahead in the ego lane slows because of traffic congestion ahead, constraining the ego car's pace. In the adjacent left lane, a white sedan runs slightly ahead toward the intersection at a steady speed and could merge back after the junction. On the other side of the median, oncoming vehicles queue near the cross street but remain separated from the ego path. Pedestrians wait on the left sidewalk by storefronts without entering the roadway.", "hazard_reasoning": "There is a blue truck slowing down in front of the ego-car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_01816", "split": "train", "clip_key": "titan_clip_1163_000144_movie", "source": {"subset": "titan", "scenario": "clip_1163", "frame": "000144"}, "frames": ["titan_clip_1163_000144_movie_t-3.jpg", "titan_clip_1163_000144_movie_t-2.jpg", "titan_clip_1163_000144_movie_t-1.jpg", "titan_clip_1163_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with brick paving and no median appears as a single lane with very light traffic; progress slows where a delivery truck is stopped ahead along the right curb with cones narrowing the roadway. A pedestrian in a green T-shirt walks away from the ego vehicle in the middle of the road to bypass the parked truck, occupying the ego path. Two other pedestrians near the right edge pass alongside the truck and walk ahead, close to the travel line and potentially entering the lane. A worker with a handcart waits at the left curb beside parked bicycles, remaining outside the roadway. A 30 km/h speed limit sign is posted on the left building facade.", "hazard_reasoning": "There is a pedestrian wearing a green T-shirt and walking away from the ego car, in the middle of the road, because of the parked vehicle. The driver should slow down to avoid a collision with the pedestrian walking unexpectedly in the roadway due to the parked van."}
{"id": "train_01817", "split": "train", "clip_key": "titan_clip_663_000456_movie", "source": {"subset": "titan", "scenario": "clip_663", "frame": "000456"}, "frames": ["titan_clip_663_000456_movie_t-3.jpg", "titan_clip_663_000456_movie_t-2.jpg", "titan_clip_663_000456_movie_t-1.jpg", "titan_clip_663_000456_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the cyclist carefully", "environment_perception": "An urban scene shows a narrow two-way road without a center line, lined by sidewalks and short bollards; the pavement is smooth and traffic is light. The ego vehicle travels along the left side as opposing movements approach in the limited width. A cyclist wearing all black rides toward the ego car along the right edge beside the bollards, holding a steady line and reducing the available clearance. A black car ahead approaches from the opposite direction near the center, slowing as it positions to pass the cyclist, which constrains the ego vehicle's pace. A silver van is stopped along the left foreground, partially intruding into the lane and creating a pinch point.", "hazard_reasoning": "There is a cyclist wearing all black, cycling along the right side of the road, toward the ego car. Therefore, the driver should manoeuvre around the cyclist carefully to avoid a collision."}
{"id": "train_01818", "split": "train", "clip_key": "2020-0129-105040_071298_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "071298"}, "frames": ["2020-0129-105040_071298_movie_t-3.jpg", "2020-0129-105040_071298_movie_t-2.jpg", "2020-0129-105040_071298_movie_t-1.jpg", "2020-0129-105040_071298_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A suburban two-way residential road with one lane each direction runs parallel to a larger arterial separated by guardrails; pavement looks smooth with colored surface panels across the lane, and traffic is light with no obvious oncoming vehicles. A small white car ahead in the ego lane proceeds at a steady pace along the same path, setting the ego vehicle's pace. Farther ahead, a white van in the ego lane slows in front of the ego car near the buildings, reducing available headway. Nearby traffic on the adjacent arterial remains separate from the ego path and has no direct interaction in this scene.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance because the vehicle ahead is decelerating."}
{"id": "train_01819", "split": "train", "clip_key": "titan_clip_11_000354_movie", "source": {"subset": "titan", "scenario": "clip_11", "frame": "000354"}, "frames": ["titan_clip_11_000354_movie_t-3.jpg", "titan_clip_11_000354_movie_t-2.jpg", "titan_clip_11_000354_movie_t-1.jpg", "titan_clip_11_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "A narrow urban side street with a single lane and brick paving runs between tall buildings, with no median and light traffic that moves steadily. A black van is stopped along the right curb, narrowing the lane. On the right beside this van, two pedestrians wearing black shirts and brown pants stand close to the roadway because the vehicle occupies the curb space, placing them near the ego path. Far ahead at the end of the block, several pedestrians cross the street from left to right across the ego vehicle's path. A small handcart or signboard sits near the lane center ahead, and construction cones and scaffolding line the left frontage.", "hazard_reasoning": "There are two pedestrians, wearing black shirts and brown pants, standing on the right side of the road, because of the parked vehicle. Carefully manoeuvre around the pedestrians to avoid collision."}
{"id": "train_01820", "split": "train", "clip_key": "2020-0203-114632_091463_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "091463"}, "frames": ["2020-0203-114632_091463_movie_t-3.jpg", "2020-0203-114632_091463_movie_t-2.jpg", "2020-0203-114632_091463_movie_t-1.jpg", "2020-0203-114632_091463_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with three same-direction lanes, dashed white lines, smooth pavement, and heavy traffic that begins to move after the signal. A white hatchback directly ahead in the ego lane accelerates as the traffic light ahead turns green, opening space. A large box truck in the right lane creeps forward alongside the ego vehicle. A silver cargo truck in the left lane moves slowly slightly ahead in the queue. Overhead lights control the intersection and show green, and no obstacles or work zones are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01821", "split": "train", "clip_key": "titan_clip_565_000366_movie", "source": {"subset": "titan", "scenario": "clip_565", "frame": "000366"}, "frames": ["titan_clip_565_000366_movie_t-3.jpg", "titan_clip_565_000366_movie_t-2.jpg", "titan_clip_565_000366_movie_t-1.jpg", "titan_clip_565_000366_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "An urban shopping alley with a single narrow unmarked lane and brick paving has no divider and very light vehicle flow as the car rolls slowly past storefronts. A man on the near right steps off the curb and moves left across the lane, entering the ego path and constraining pace. Farther ahead on the right side, two pedestrians, one in a white shirt and the other in a gray dress, walk toward the ego car along the edge, encroaching slightly into the lane. Additional pedestrians are visible ahead in the roadway.", "hazard_reasoning": "There are two pedestrians wearing a white shirt and a gray dress, walking on the right side of the road, towards the ego car. Because they are approaching the vehicle's path, the driver should remain alert and be ready to react to avoid a potential collision."}
{"id": "train_01822", "split": "train", "clip_key": "2020-0220-102630_026157_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "026157"}, "frames": ["2020-0220-102630_026157_movie_t-3.jpg", "2020-0220-102630_026157_movie_t-2.jpg", "2020-0220-102630_026157_movie_t-1.jpg", "2020-0220-102630_026157_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes and a curbside sidewalk is shown; the pavement is smooth and overall traffic is heavy and slow. A large white box truck is stopped directly ahead in the left lane because congestion ahead has brought the lane to a halt, holding the ego car. To the right, a smaller covered cargo truck in the adjacent lane creeps forward beside the stopped truck, keeping lateral clearance tight and moving slightly ahead. Other right-lane vehicles roll forward in the queue.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe following distance and avoid a collision with the halted vehicle."}
{"id": "train_01823", "split": "train", "clip_key": "2020-0203-154554_027329_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "027329"}, "frames": ["2020-0203-154554_027329_movie_t-3.jpg", "2020-0203-154554_027329_movie_t-2.jpg", "2020-0203-154554_027329_movie_t-1.jpg", "2020-0203-154554_027329_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multilane arterial runs between high-rises and beneath an elevated roadway, with three same-direction lanes, dry smooth pavement, and heavy stop-and-go flow. A gray flatbed truck is directly ahead in the ego lane, fully stopped because congestion backs up under the flyover and it blocks the ego vehicle's path. To the right, a white kei van in the adjacent lane inches forward beside the truck, possibly slipping ahead and constraining a rightward lane change. On the left, a black taxi near the ego car slows in the queue and stays close to the lane line, leaving little room to merge left. Traffic remains dense with vehicles stacked ahead in all lanes.", "hazard_reasoning": "There is a gray flatbed truck stopped in the ego lane because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle and to adjust to the congested traffic ahead."}
{"id": "train_01824", "split": "train", "clip_key": "titan_clip_1167_000486_movie", "source": {"subset": "titan", "scenario": "clip_1167", "frame": "000486"}, "frames": ["titan_clip_1167_000486_movie_t-3.jpg", "titan_clip_1167_000486_movie_t-2.jpg", "titan_clip_1167_000486_movie_t-1.jpg", "titan_clip_1167_000486_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping alley with a single shared lane and brick paving runs between storefronts; there is no center divider and vehicular traffic is very light amid heavy pedestrian activity. Ahead in the middle of the lane, a pedestrian carrying a handbag walks away from the ego vehicle because the sidewalk is narrow, slowing the vehicle's approach. To the right, a small group steps off the sidewalk and moves diagonally into the lane toward the left, potentially entering the ego path. Farther ahead near the left curb, a black van stands with its rear open, partially occupying the lane and constricting the available space.", "hazard_reasoning": "There is a pedestrian carrying a handbag, walking in the middle of the road, away from the ego car, because the sidewalk is narrow. The driver should slow down to avoid colliding with the pedestrian obstructing the roadway and ensure safe passage under this situation."}
{"id": "train_01825", "split": "train", "clip_key": "titan_clip_1160_000486_movie", "source": {"subset": "titan", "scenario": "clip_1160", "frame": "000486"}, "frames": ["titan_clip_1160_000486_movie_t-3.jpg", "titan_clip_1160_000486_movie_t-2.jpg", "titan_clip_1160_000486_movie_t-1.jpg", "titan_clip_1160_000486_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban commercial street presents a single usable lane with no median, smooth pavement, and light traffic slowed by curbside loading. On the left, beside a parked silver van with its door open, a man in a striped shirt and blue pants exits and walks toward the ego vehicle, potentially stepping into its path. To the immediate right, a white box truck is stopped at the curb while a worker handles cargo at its open rear, narrowing the lane. Several white vans ahead in the same direction pause or creep near the left curb, constraining the ego vehicle's pace. Parked vehicles on both sides create intermittent pinch points.", "hazard_reasoning": "There is a man wearing a striped shirt and blue pants, and walking towards the ego car, on the left side of the road, because he is exiting a parked vehicle. The pedestrian may enter the travel lane unexpectedly, so the driver should yield to avoid a collision."}
{"id": "train_01826", "split": "train", "clip_key": "2020-0218-103119_039078_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "039078"}, "frames": ["2020-0218-103119_039078_movie_t-3.jpg", "2020-0218-103119_039078_movie_t-2.jpg", "2020-0218-103119_039078_movie_t-1.jpg", "2020-0218-103119_039078_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane street lined with mid-rise buildings runs straight under clear skies; the pavement is dry and smooth. The ego vehicle proceeds in the leftmost through lane, divided from a parallel right lane by a painted chevron buffer, with light flow in the ego lane and heavy, slow traffic to the right. A white box truck ahead in the ego lane pulls away as the road ahead is clear, gradually increasing the gap. Cars in the adjacent right lane queue beside the ego path and creep forward, but they remain contained by the buffer and do not impede the ego vehicle. No-parking signs appear on a pole to the left.", "hazard_reasoning": "There is a white truck driving away from the ego car, in the ego lane, because the road ahead is clear. Maintain a safe following distance in case the truck brakes suddenly to avoid a collision."}
{"id": "train_01827", "split": "train", "clip_key": "titan_clip_1375_000048_movie", "source": {"subset": "titan", "scenario": "clip_1375", "frame": "000048"}, "frames": ["titan_clip_1375_000048_movie_t-3.jpg", "titan_clip_1375_000048_movie_t-2.jpg", "titan_clip_1375_000048_movie_t-1.jpg", "titan_clip_1375_000048_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "A dense urban commercial street has a single marked lane with no median, smooth pavement, and very light vehicle traffic while pedestrian activity is heavy near an upcoming intersection. A pedestrian wearing a black T-shirt and gray skirt, carrying a handbag, walks away from the ego car in the middle of the ego lane, occupying the path and constraining speed. Farther ahead, several pedestrians cross left to right on the zebra crossing, continuing through the lane and keeping the way blocked. On the right edge, two pedestrians, one with an umbrella, stand partly in the roadway near the travel lane and may enter the path. A line of people outside a restaurant crowds the left curb, narrowing space. The zebra crossing is the salient control, with no traffic signals visible.", "hazard_reasoning": "There is a pedestrian, wearing a black t-shirt and gray skirt, and carrying a handbag, walking in the middle of the ego lane, away from the ego car. The driver should carefully manoeuvre around the pedestrian because they are walking in the driving lane and could enter the vehicle's path."}
{"id": "train_01828", "split": "train", "clip_key": "2020-0217-110854_057744_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "057744"}, "frames": ["2020-0217-110854_057744_movie_t-3.jpg", "2020-0217-110854_057744_movie_t-2.jpg", "2020-0217-110854_057744_movie_t-1.jpg", "2020-0217-110854_057744_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane arterial runs under an elevated structure, with a guardrail on the right; the pavement is dry and traffic is slow and queued. Directly ahead in the right lane, a gray van remains stopped at a red traffic light, holding the ego vehicle in place. In the adjacent left lane, a white sedan slightly ahead creeps forward, continuing past the queue without entering the ego lane. Farther ahead, several cars line up in both lanes toward the intersection, keeping speeds low.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, because of a red traffic light. You should stop to avoid rear-ending the van and comply with the red signal."}
{"id": "train_01829", "split": "train", "clip_key": "titan_clip_910_000144_movie", "source": {"subset": "titan", "scenario": "clip_910", "frame": "000144"}, "frames": ["titan_clip_910_000144_movie_t-3.jpg", "titan_clip_910_000144_movie_t-2.jpg", "titan_clip_910_000144_movie_t-1.jpg", "titan_clip_910_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "A dense urban shopping street with a narrow single-lane, brick-paved roadway has no divider and light vehicle flow but many pedestrians. Ahead in the lane, a white van proceeds slowly among people and effectively sets the ego vehicle's pace. On the left edge near the ego car, a man in a black T-shirt with a hand in his pocket and a white grocery bag walks toward the ego car along the roadway margin and may step into its path. To the right by the storefront, a pedestrian steps off the curb and begins crossing toward the center, potentially entering the ego lane. A no-stopping/no-parking sign is posted on the left pole.", "hazard_reasoning": "There is a male pedestrian, wearing a black t-shirt, hand in the pocket and carrying a white grocery bag, walking on the left side of the road, toward the ego car. The driver should be cautious because the pedestrian may unexpectedly step into the vehicle's path."}
{"id": "train_01830", "split": "train", "clip_key": "2020-0212-102546_045057_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "045057"}, "frames": ["2020-0212-102546_045057_movie_t-3.jpg", "2020-0212-102546_045057_movie_t-2.jpg", "2020-0212-102546_045057_movie_t-1.jpg", "2020-0212-102546_045057_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway with dry pavement and a small raised divider shaping a right-side lane; traffic is heavy and largely stationary at a signal. Ahead in the ego lane, a white SUV is stopped for the red light, holding the ego vehicle. Slightly farther ahead in the same queue, a dump truck waits under the viaduct, further constraining movement. In the lane to the left, a silver van is stopped abreast of the ego car, matching the queue. To the right, a dark sedan in the separated lane is also halted beside the ego vehicle. The overhead traffic signal ahead shows red.", "hazard_reasoning": "There is a white Sedan stopped in front of the ego car because of a red traffic light. The driver must stop to avoid colliding with the stationary vehicle and to comply with the traffic signal."}
{"id": "train_01831", "split": "train", "clip_key": "2020-0228-150133_002108_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "002108"}, "frames": ["2020-0228-150133_002108_movie_t-3.jpg", "2020-0228-150133_002108_movie_t-2.jpg", "2020-0228-150133_002108_movie_t-1.jpg", "2020-0228-150133_002108_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "An urban two-way street has a single lane in each direction divided by a narrow raised median; the pavement is dry and the ego-side flow is slow while oncoming traffic is steady. A white box truck directly ahead in the ego lane slows, constraining the pace. Along the left curb just ahead, a small flatbed truck is stopped and a traffic cone lines the left side of the road, narrowing the usable lane. Beyond the median on the right, oncoming traffic including a cyclist near the curb and a white SUV proceeds past, remaining separated from the ego path.", "hazard_reasoning": "There is a traffic cone on the left side of the road. The cone poses an obstruction near the lane edge, so drivers should manoeuvre carefully around it to avoid collision and maintain a safe path."}
{"id": "train_01832", "split": "train", "clip_key": "titan_clip_1008_000036_movie", "source": {"subset": "titan", "scenario": "clip_1008", "frame": "000036"}, "frames": ["titan_clip_1008_000036_movie_t-3.jpg", "titan_clip_1008_000036_movie_t-2.jpg", "titan_clip_1008_000036_movie_t-1.jpg", "titan_clip_1008_000036_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down and watch for pedestrians.", "environment_perception": "An urban commercial street with a narrow undivided carriageway and smooth pavement shows light, slow-moving traffic. A white box truck ahead in the ego lane is stopped near the left side, constraining the ego vehicle's pace and narrowing the passage. On the right side of the road, a pedestrian carrying a handbag walks away from the ego car along the edge of the roadway, remaining near the curb. On the left, a man with a shopping bag moves along the curb toward the near side, close to the travel path but staying off the lane. Bicycles are parked at the right storefront, creating a tight corridor.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking on the right side of the road, away from the ego car. The pedestrian may change direction or step into the vehicle's path from the right side, and the partially obstructing parked truck further reduces reaction space."}
{"id": "train_01833", "split": "train", "clip_key": "2020-0210-155354_022323_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "022323"}, "frames": ["2020-0210-155354_022323_movie_t-3.jpg", "2020-0210-155354_022323_movie_t-2.jpg", "2020-0210-155354_022323_movie_t-1.jpg", "2020-0210-155354_022323_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated arterial with two lanes in the ego direction and metal side rails has smooth pavement and a gentle downhill, with light to moderate traffic flowing steadily. A black kei van directly ahead in the ego lane maintains speed and effectively sets our pace. A dark car slightly ahead in the right lane cruises at a similar speed and stays in its lane, posing no immediate conflict. Farther ahead, a small white van and several cars in both lanes continue downhill and subtly bunch, shaping the overall flow.", "hazard_reasoning": "There are no visible hazards ahead, so the driver can maintain course and speed safely."}
{"id": "train_01834", "split": "train", "clip_key": "titan_clip_566_000396_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_566_000396_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_566_000396_movie_t-3_augB1.jpg", "titan_clip_566_000396_movie_t-2_augB1.jpg", "titan_clip_566_000396_movie_t-1_augB1.jpg", "titan_clip_566_000396_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with brick paving and no marked lanes runs between storefronts; it appears as a single shared lane with very light vehicular flow. A pedestrian wearing a cap and shorts walks in the middle of the road toward the ego vehicle, occupying the travel path. Near the front, a man in a white shirt carrying a bag crosses the lane from right to left, passing directly ahead and potentially constraining the pace. Farther ahead, two pedestrians walk away along the roadway near the right side, remaining in the lane. A red do-not-enter sign faces a side street on the left. A parked bicycle stands at the right edge beside a wall, narrowing the usable width.", "hazard_reasoning": "There is a pedestrian wearing a cap and shorts, walking in the middle of the road toward the ego car. Because the pedestrian is walking on the roadway toward the car, the driver should slow down to avoid a collision."}
{"id": "train_01835", "split": "train", "clip_key": "titan_clip_68_000312_movie", "source": {"subset": "titan", "scenario": "clip_68", "frame": "000312"}, "frames": ["titan_clip_68_000312_movie_t-3.jpg", "titan_clip_68_000312_movie_t-2.jpg", "titan_clip_68_000312_movie_t-1.jpg", "titan_clip_68_000312_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street lined with shops and apartments has a single undivided lane with smooth pavement and very light traffic; no vehicles are moving ahead or approaching. Far ahead on the right edge, a pedestrian in a striped shirt stands beside a blue trolley near the curb and may step into the lane. Rows of parked bicycles occupy much of the left side, and several shop signboards and blue carts on the right protrude into the roadway, narrowing the usable path for the ego-vehicle. No prominent traffic signals or speed signs are visible, and no other moving road users appear.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt, standing with a blue trolley on the right side of the road. The driver should manoeuvre carefully around the pedestrian to avoid a collision and comply with the yield sign."}
{"id": "train_01836", "split": "train", "clip_key": "titan_clip_227_000354_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_227_000354_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_227_000354_movie_t-3_augB1.jpg", "titan_clip_227_000354_movie_t-2_augB1.jpg", "titan_clip_227_000354_movie_t-1_augB1.jpg", "titan_clip_227_000354_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around pedestrian", "environment_perception": "A narrow urban two-way street runs between tall buildings, with worn pavement and light traffic; the right curb is lined with parked vehicles that squeeze the lane. A pedestrian in a white T-shirt carrying a backpack walks ahead on the left side away from the ego car along its path, effectively setting the pace. A large box truck stands on the right near the camera, jutting slightly into the lane and creating a pinch point. Farther ahead, several vans remain parked along the right curb, further narrowing the corridor and limiting sight down the street. No oncoming vehicles or traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, carrying a backpack, walking on the left side of the road, away from the ego car. The pedestrian's proximity to the roadway and obstructed sight-lines due to the white truck could lead to unexpected crossing, so the driver should manoeuvre around the pedestrian to avoid collision."}
{"id": "train_01837", "split": "train", "clip_key": "titan_clip_44_000084_movie", "source": {"subset": "titan", "scenario": "clip_44", "frame": "000084"}, "frames": ["titan_clip_44_000084_movie_t-3.jpg", "titan_clip_44_000084_movie_t-2.jpg", "titan_clip_44_000084_movie_t-1.jpg", "titan_clip_44_000084_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "A dense urban commercial side street with brick paving and a single narrow shared lane, no median, and light traffic unfolds as the vehicle proceeds slowly past storefronts. A pedestrian in a black suit on the left side walks toward the ego car along the roadway and may edge into its lane. Farther ahead, several pedestrians move along and briefly cross from the right, constraining the vehicle's pace. A black van is parked along the left curb close to the camera, narrowing the passage. Orange cones and signage sit by the right curb near a shopfront, and no traffic signals or posted speed signs are clearly visible.", "hazard_reasoning": "There is a pedestrian wearing a black suit and walking toward the ego car, on the left side of the road. The driver should manoeuvre carefully around the pedestrian to avoid a collision."}
{"id": "train_01838", "split": "train", "clip_key": "2020-0127-132751_003604_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "003604"}, "frames": ["2020-0127-132751_003604_movie_t-3.jpg", "2020-0127-132751_003604_movie_t-2.jpg", "2020-0127-132751_003604_movie_t-1.jpg", "2020-0127-132751_003604_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban single-lane road curves right between mid-rise buildings, with a concrete wall on the right and a sidewalk on the left; the pavement is smooth and traffic is light with no vehicle directly ahead. Ahead on the left, construction work narrows the lane as cones and temporary signs funnel traffic around a small work truck, with workers near the taper and one directing vehicles. On the left sidewalk beside the zone, a person with a bicycle and another pedestrian stand by the railing close to the narrowed path but remain outside the lane. On a lower parallel roadway to the right, a car travels away behind a barrier and does not affect the ego lane. The rightward curve and work area limit the forward view.", "hazard_reasoning": "There is construction work on the left side of the road. This reduces the available lane width and introduces obstacles and workers close to traffic, so the driver should carefully manoeuvre to avoid them."}
{"id": "train_01839", "split": "train", "clip_key": "2020-0203-114632_061337_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "061337"}, "frames": ["2020-0203-114632_061337_movie_t-3.jpg", "2020-0203-114632_061337_movie_t-2.jpg", "2020-0203-114632_061337_movie_t-1.jpg", "2020-0203-114632_061337_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian at crosswalk", "environment_perception": "An urban multi-lane two-way arterial approaches a wide signalized intersection with clear zebra crosswalks, a small central island with posts, and smooth pavement; traffic overall is moderate with steadier oncoming flow than same-direction movement. Ahead at the crosswalk, a pedestrian wearing black pants and carrying a handbag crosses left to right across the ego lane, actively occupying the path and constraining progress. In the opposite lanes to the right of the centerline, several cars move straight through the junction as oncoming traffic without turning toward the ego lane. Farther ahead, another person walks across a more distant crosswalk near the median, remaining well ahead of the ego vehicle. Overhead traffic signals and street signs are visible at the intersection.", "hazard_reasoning": "There is a pedestrian wearing black pants, carrying a handbag, and crossing the street, from the left to the right side, ahead at the crosswalk. The driver should yield because the pedestrian has the right of way in the crosswalk and is entering the lane of travel."}
{"id": "train_01840", "split": "train", "clip_key": "titan_clip_1031_000090_movie", "source": {"subset": "titan", "scenario": "clip_1031", "frame": "000090"}, "frames": ["titan_clip_1031_000090_movie_t-3.jpg", "titan_clip_1031_000090_movie_t-2.jpg", "titan_clip_1031_000090_movie_t-1.jpg", "titan_clip_1031_000090_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban residential street with no centerline and smooth pavement extends ahead, and traffic is light with no moving vehicles visible. On the left ahead, a blue construction truck is parked within roadside works, stationary and reducing the available width of the lane. Along that side, several orange traffic cones, including one near the foreground, indicate a construction zone with barriers and materials. On the right curb close by, a couple of bicycles are parked but remain outside the travel lane. A blue pedestrian sign with a supplemental plate showing 7:30-8:30 is mounted on a pole to the right.", "hazard_reasoning": "There is an orange traffic cone, on the left side of the road, indicating a construction zone. Drivers should slow down because the cones and parked truck narrow the roadway and create blind spots."}
{"id": "train_01841", "split": "train", "clip_key": "2020-0228-150133_037648_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "037648"}, "frames": ["2020-0228-150133_037648_movie_t-3.jpg", "2020-0228-150133_037648_movie_t-2.jpg", "2020-0228-150133_037648_movie_t-1.jpg", "2020-0228-150133_037648_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban arterial lined with mid-rise buildings and a fence on the right has dry, well-kept pavement. The ego vehicle travels on a single through lane with moderate traffic that compresses into a slow queue ahead. A gray sedan directly ahead in the ego lane slows because congestion builds in front, constraining the ego car's pace. Farther ahead, several same-direction cars creep toward the next block in close gaps, forming the bottleneck. Overhead blue guide signs are visible, and no unusual hazards appear.", "hazard_reasoning": "There is a gray sedan slowing down in front of the ego-car, because of traffic congestion ahead. Slow down to maintain a safe following distance and avoid a rear-end collision due to reduced traffic speed."}
{"id": "train_01842", "split": "train", "clip_key": "2020-0129-144857_007995_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "007995"}, "frames": ["2020-0129-144857_007995_movie_t-3.jpg", "2020-0129-144857_007995_movie_t-2.jpg", "2020-0129-144857_007995_movie_t-1.jpg", "2020-0129-144857_007995_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection on a two-lane each-direction road with no physical median and smooth pavement; traffic is moderate, with vehicles queued in both same-direction lanes. A silver SUV is stopped directly ahead in the ego lane because the overhead signal shows red, holding the ego vehicle. To the near right, a cyclist rides left across the crosswalk in front of the queue as the light remains red. A pedestrian on the far-right corner also walks left across the crosswalk ahead of the stopped traffic.", "hazard_reasoning": "There is a silver SUV stopped in front of the ego car, because of a red traffic light. The driver should stop promptly to avoid a collision due to the halted vehicle and red signal."}
{"id": "train_01843", "split": "train", "clip_key": "titan_clip_154_000780_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_154_000780_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_154_000780_movie_t-3_augB1.jpg", "titan_clip_154_000780_movie_t-2_augB1.jpg", "titan_clip_154_000780_movie_t-1_augB1.jpg", "titan_clip_154_000780_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single shared lane has no centerline or sidewalks, the asphalt looks smooth, and vehicular traffic is very light as the car moves slowly. Ahead in the lane, a man in a patterned shirt, blue pants, and a cap carrying a backpack walks away from the ego car because there is no sidewalk, occupying the path and setting the pace. Farther ahead near the left edge, another pedestrian walks in the same direction close to doorways and could drift into the lane. On the near left, a person approaches the camera along the edge and passes with tight clearance. Shopfronts line the right side, where stacked boxes and a barrel sit at the curb, narrowing the usable roadway.", "hazard_reasoning": "There is a tall man wearing a patterned shirt, blue pants, and a cap, carrying a backpack, and walking in front of the ego car, away from the ego car, because there is no sidewalk. The pedestrian is walking directly in the travel lane without a sidewalk, so the driver should slow down to avoid a potential collision."}
{"id": "train_01844", "split": "train", "clip_key": "titan_clip_615_000180_movie", "source": {"subset": "titan", "scenario": "clip_615", "frame": "000180"}, "frames": ["titan_clip_615_000180_movie_t-3.jpg", "titan_clip_615_000180_movie_t-2.jpg", "titan_clip_615_000180_movie_t-1.jpg", "titan_clip_615_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban two-way side street with no centerline runs between tall buildings, the pavement dry and slightly worn, and traffic is light with no moving vehicles. The ego car proceeds straight along the left side of the roadway. Ahead on the right, a pedestrian wearing a brown apron walks away along the curb edge, moving in the same direction and close to the travel path. On the left near mid-block, a person lingers by an A-frame sign at the curb, facing the lane near the edge. Another person stands by a storefront recess on the right. Parked bicycles line the left curb, narrowing clearance.", "hazard_reasoning": "There is a pedestrian wearing a brown apron, walking on the right side of the road, away from the ego car. The pedestrian may change direction and enter the vehicle's path, so the driver should be aware."}
{"id": "train_01845", "split": "train", "clip_key": "2020-0228-102841_023032_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "023032"}, "frames": ["2020-0228-102841_023032_movie_t-3.jpg", "2020-0228-102841_023032_movie_t-2.jpg", "2020-0228-102841_023032_movie_t-1.jpg", "2020-0228-102841_023032_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the white sedan turning", "environment_perception": "An urban multi-lane arterial curves right through a wide junction with painted islands and smooth pavement, and traffic is moderate and flowing. A white sedan directly ahead in the ego lane turns right and drives away through the curve, briefly dictating the ego vehicle's pace as it clears the junction. To the right, a red cargo truck in the adjacent lane continues ahead around the bend at a similar speed, holding position alongside the ego car. Farther right, a small white kei truck proceeds slowly in its lane beyond the splitter island, remaining ahead without encroaching. Overhead signal heads are present but their aspects are not visible.", "hazard_reasoning": "There is a white sedan turning right, driving away from the ego car, in the ego lane. Be aware because it may continue to move across your path while completing the turn."}
{"id": "train_01846", "split": "train", "clip_key": "2020-0217-110854_049453_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "049453"}, "frames": ["2020-0217-110854_049453_movie_t-3.jpg", "2020-0217-110854_049453_movie_t-2.jpg", "2020-0217-110854_049453_movie_t-1.jpg", "2020-0217-110854_049453_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated expressway with two same-direction lanes, a right-side guardrail, and smooth pavement; traffic is light with no opposing flow on this carriageway. A white van ahead in the ego lane moves steadily away as the road ahead is clear, creating increasing gap from the ego vehicle. Parked vans and a truck line the left curb just ahead, remaining stationary at the lane edge and narrowing the usable space beside the ego lane. Pedestrians on the right sidewalk behind the railing walk along the fence, separated from the roadway and not affecting the lane.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car, because the road ahead is clear. Following the vehicle ahead helps maintain appropriate spacing and ensures consistent speed and lane positioning under clear traffic conditions."}
{"id": "train_01847", "split": "train", "clip_key": "titan_clip_396_000258_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_396_000258_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_396_000258_movie_t-3_augB1.jpg", "titan_clip_396_000258_movie_t-2_augB1.jpg", "titan_clip_396_000258_movie_t-1_augB1.jpg", "titan_clip_396_000258_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane in the ego direction runs between storefronts, with curbed sidewalks and no median; the pavement is smooth and traffic is light. A large white delivery truck is immediately ahead in the ego lane and moves slowly, constraining the ego car's pace. Farther ahead, another truck continues down the same lane, maintaining a short queue that the ego vehicle follows. A pedestrian wearing a green shirt crosses in front of the ego car from the left side of the lane, briefly entering the path. Several other pedestrians walk along the right sidewalk near shops but remain on the curb.", "hazard_reasoning": "There is a pedestrian wearing a green shirt, crossing in front of the ego car from the left side of the lane. You should slow down to allow the pedestrian to cross safely and avoid a collision."}
{"id": "train_01848", "split": "train", "clip_key": "titan_clip_805_000504_movie", "source": {"subset": "titan", "scenario": "clip_805", "frame": "000504"}, "frames": ["titan_clip_805_000504_movie_t-3.jpg", "titan_clip_805_000504_movie_t-2.jpg", "titan_clip_805_000504_movie_t-1.jpg", "titan_clip_805_000504_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the stopped vehicle", "environment_perception": "An urban commercial street with one narrow lane in each direction and no median lies ahead, the pavement in good condition and traffic light. A blue hatchback is stopped ahead in the ego lane near the intersection, occupying most of the lane and controlling the ego vehicle's approach. An oncoming cyclist rides toward the camera along the right-edge curb in the opposing lane, continuing past the storefronts. A few pedestrians walk on both sidewalks, including one close to the right curb who remains on the sidewalk. A large orange 30 speed marking is painted on the roadway.", "hazard_reasoning": "There is a blue hatchback, stopped near the intersection, in the ego lane. The driver should manoeuvre around it carefully to avoid a collision, as it is blocking the lane ahead."}
{"id": "train_01849", "split": "train", "clip_key": "titan_clip_526_000144_movie", "source": {"subset": "titan", "scenario": "clip_526", "frame": "000144"}, "frames": ["titan_clip_526_000144_movie_t-3.jpg", "titan_clip_526_000144_movie_t-2.jpg", "titan_clip_526_000144_movie_t-1.jpg", "titan_clip_526_000144_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian waiting to cross", "environment_perception": "An urban residential scene shows a narrow two-way local road with no centerline and smooth pavement, approaching a T-junction where the roadway bends slightly left; traffic is light with no moving vehicles. A pedestrian stands at the left corner ahead, waiting to cross the ego lane near the junction. On the right sidewalk beside a building, another pedestrian stands near the curb by parked cars, facing the roadway. Several parked vehicles, including a white SUV in a carport and a scooter by the curb, line the right side and slightly narrow the approach.", "hazard_reasoning": "There is a pedestrian waiting to cross at the left side of the road. This pedestrian could enter the roadway around the curve, reducing your available reaction time and requiring increased vigilance."}
{"id": "train_01850", "split": "train", "clip_key": "2020-0220-151845_055587_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-151845_055587_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-151845_055587_movie_t-3_augB1.jpg", "2020-0220-151845_055587_movie_t-2_augB1.jpg", "2020-0220-151845_055587_movie_t-1_augB1.jpg", "2020-0220-151845_055587_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multilane road runs under an elevated structure, with a concrete wall on the left; the pavement is in good condition and traffic is heavy and slow. A pink truck with a yellow-covered load is directly ahead in the ego lane and slows because of congestion further up, constraining the ego vehicle. To the right, a black sedan travels alongside in the adjacent lane, inching forward and reducing room to change lanes. Farther ahead in the neighboring lanes, several silver vans and cars queue tightly and intermittently stop, sustaining the jam. A blue overhead sign provides route directions.", "hazard_reasoning": "There is a pink and yellow truck slowing down in the ego lane, because of traffic congestion ahead. The slowing truck indicates reduced traffic flow, so the driver should adjust speed to avoid sudden braking or collision."}
{"id": "train_01851", "split": "train", "clip_key": "2020-0212-102546_046585_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "046585"}, "frames": ["2020-0212-102546_046585_movie_t-3.jpg", "2020-0212-102546_046585_movie_t-2.jpg", "2020-0212-102546_046585_movie_t-1.jpg", "2020-0212-102546_046585_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs straight beneath an elevated structure, the pavement dry and smooth with no median visible, and traffic is light to moderate and steady. A white SUV directly ahead in the ego lane slows, reducing the ego car's pace. In the adjacent lane to the left, a white van travels slightly ahead at a steady speed, occupying the space alongside. Farther ahead in the left lanes, a motorcycle continues straight and gradually pulls away. A fenced area along the right edge under the structure narrows the shoulder.", "hazard_reasoning": "There is a white SUV slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe distance as the vehicle ahead is reducing speed."}
{"id": "train_01852", "split": "train", "clip_key": "2020-0212-102546_048727_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "048727"}, "frames": ["2020-0212-102546_048727_movie_t-3.jpg", "2020-0212-102546_048727_movie_t-2.jpg", "2020-0212-102546_048727_movie_t-1.jpg", "2020-0212-102546_048727_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road with smooth asphalt approaches a wide intersection, and traffic is moderate and flowing steadily without a physical median. A gray van ahead in the ego lane drives away from the camera, continuing straight and effectively setting the ego vehicle's pace. In the adjacent right same-direction lane, a white van moves slightly faster, proceeding straight while staying parallel and not encroaching on the ego lane. Farther ahead in the same direction, a bus continues through the junction, remaining well ahead of the immediate traffic. Overhead traffic signals are visible, and a blue regulatory sign indicates straight ahead.", "hazard_reasoning": "There is a gray van driving away from the ego car in the ego lane. A parked truck partially obstructs the right side view, so be aware of hidden hazards."}
{"id": "train_01853", "split": "train", "clip_key": "2020-0127-132751_085137_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "085137"}, "frames": ["2020-0127-132751_085137_movie_t-3.jpg", "2020-0127-132751_085137_movie_t-2.jpg", "2020-0127-132751_085137_movie_t-1.jpg", "2020-0127-132751_085137_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with multiple same-direction lanes and no physical median has dry, well-marked pavement and heavy, slow-moving traffic. Ahead in the ego lane, a black truck with a green tarp slows to a crawl because congestion builds in front, directly setting the ego vehicle's pace. In the left adjacent lane slightly ahead, a large silver box truck rolls slowly in the same queue, leaving little gap for a left merge. In the right lane, a white SUV ahead and a black minicar alongside creep forward nose-to-tail, limiting room to merge right.", "hazard_reasoning": "There is a black truck with a green tarp slowing down in the ego lane because of traffic congestion ahead. The truck's deceleration signals queuing traffic, so the driver should reduce speed to maintain a safe following distance."}
{"id": "train_01854", "split": "train", "clip_key": "2020-0129-105040_061436_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061436"}, "frames": ["2020-0129-105040_061436_movie_t-3.jpg", "2020-0129-105040_061436_movie_t-2.jpg", "2020-0129-105040_061436_movie_t-1.jpg", "2020-0129-105040_061436_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "A narrow urban two-way street with red-painted edge strips and worn but smooth asphalt extends ahead, with no median and light traffic; no vehicles are immediately ahead or oncoming. On the left edge near the ego lane, a pedestrian walks along the curb close to the travel lane and may constrain the vehicle's pace. On the right, an adult with a child stands at the curb by a wall, waiting and not stepping into the roadway. Parked bicycles line the left storefronts, reducing lateral clearance near the curb.", "hazard_reasoning": "There is a pedestrian wearing a black jacket and black pants, walking on the left side of the road, toward the ego car. The pedestrian is moving toward the vehicle's path and could enter unexpectedly, so the driver should remain vigilant and prepared to slow down."}
{"id": "train_01855", "split": "train", "clip_key": "titan_clip_484_000174_movie", "source": {"subset": "titan", "scenario": "clip_484", "frame": "000174"}, "frames": ["titan_clip_484_000174_movie_t-3.jpg", "titan_clip_484_000174_movie_t-2.jpg", "titan_clip_484_000174_movie_t-1.jpg", "titan_clip_484_000174_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist approaching ahead.", "environment_perception": "An urban commercial street with a narrow two-way road, single lane each direction, no median, and smooth pavement; traffic flow is light. Ahead near the centerline, a cyclist wearing a blue shirt rides toward the ego vehicle on the right side of the road, closing in on the ego path and reducing space. On the right edge just beyond, a white van faces the ego direction and waits in the oncoming lane, further narrowing the corridor. From the right sidewalk a man steps into the roadway and walks diagonally toward the center, potentially entering the ego lane. Farther ahead in the ego lane, a scooter moves away at low speed, modestly affecting pace. Parked cars line the left curb and pedestrians stand near shop fronts, adding roadside clutter.", "hazard_reasoning": "A cyclist wearing a blue shirt and cycling on the right side of the road and towards the ego car. Be aware of the cyclist approaching ahead to avoid entering their path."}
{"id": "train_01856", "split": "train", "clip_key": "titan_clip_271_000036_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_271_000036_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_271_000036_movie_t-3_augB1.jpg", "titan_clip_271_000036_movie_t-2_augB1.jpg", "titan_clip_271_000036_movie_t-1_augB1.jpg", "titan_clip_271_000036_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban single-lane street runs between tall buildings with smooth pavement, no median, and very light traffic. Two pedestrians in white shirts and dark pants are ahead in the middle of the lane, walking away from the ego vehicle as they go around a silver car stopped on the left, so they occupy the ego path and constrain its approach. The silver hatchback is parked partly in the lane, creating a pinch point near the curb. A small bicycle is parked by the left sidewalk, and distant pedestrians appear near the far intersection.", "hazard_reasoning": "There are two pedestrians wearing white shirts and black pants, walking in the middle of the road, away from the ego car, because of the parked vehicle. They are forced into the travel lane to avoid the parked car, increasing the risk of collision if approached at normal speed."}
{"id": "train_01857", "split": "train", "clip_key": "titan_clip_954_000324_movie", "source": {"subset": "titan", "scenario": "clip_954", "frame": "000324"}, "frames": ["titan_clip_954_000324_movie_t-3.jpg", "titan_clip_954_000324_movie_t-2.jpg", "titan_clip_954_000324_movie_t-1.jpg", "titan_clip_954_000324_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "An urban two-way street with no centerline runs beside a rail structure; pavement is smooth and traffic is light as the ego car proceeds along the left side. Two pedestrians in white shirts carrying handbags walk ahead along the right edge away from the car because obstacles on the sidewalk force them into the roadway. A dark car is stopped on the left near the ego vehicle with its driver's door open into the lane, encroaching slightly on the path. Farther ahead, a small truck in the same direction moves slowly near the left side under the structure. Bicycles and planters clutter the right sidewalk, creating the obstruction.", "hazard_reasoning": "There are two pedestrians wearing a white shirt, carrying handbags, walking on the right side of the road, away from the car, because of the obstacles on the sidewalk. The driver should be aware of these pedestrians encroaching on the road to prevent potential collision."}
{"id": "train_01858", "split": "train", "clip_key": "2020-0207-151349_039632_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "039632"}, "frames": ["2020-0207-151349_039632_movie_t-3.jpg", "2020-0207-151349_039632_movie_t-2.jpg", "2020-0207-151349_039632_movie_t-1.jpg", "2020-0207-151349_039632_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs beneath an elevated expressway with sound pavement, and same-direction traffic is heavy and mostly stopped. A white sedan directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. In the adjacent right lane, a queue of trucks and vans, including a covered-load truck and a box truck, crawls alongside and maintains the jam. At the left curb just ahead, a small silver van is stopped with its rear door open and a person beside it, remaining at the curb near the lane edge.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_01859", "split": "train", "clip_key": "titan_clip_1359_000372_movie", "source": {"subset": "titan", "scenario": "clip_1359", "frame": "000372"}, "frames": ["titan_clip_1359_000372_movie_t-3.jpg", "titan_clip_1359_000372_movie_t-2.jpg", "titan_clip_1359_000372_movie_t-1.jpg", "titan_clip_1359_000372_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban commercial street with a single open lane in the ego direction curves left past a side street; the pavement is smooth and traffic is light. On the right foreground, a pedestrian in a black T-shirt and pants looks at his phone while crossing within the zebra crossing toward the left, moving into the ego lane and setting the pace. Next to him, three pedestrians also cross from right to left on the same crosswalk, continuing across the ego vehicle's path. Ahead on the left, a small truck stands stopped near the curb by another crosswalk, slightly narrowing space. A 30 speed-limit sign is posted on a pole to the right.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and pants, looking at his phone, and crossing the street inside a pedestrian crossing, to the left side of the road. The pedestrian is distracted and may not notice oncoming traffic, so the driver should yield to allow safe passage."}
{"id": "train_01860", "split": "train", "clip_key": "titan_clip_590_000582_movie", "source": {"subset": "titan", "scenario": "clip_590", "frame": "000582"}, "frames": ["titan_clip_590_000582_movie_t-3.jpg", "titan_clip_590_000582_movie_t-2.jpg", "titan_clip_590_000582_movie_t-1.jpg", "titan_clip_590_000582_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban back street with a narrow two-way lane and no centerline runs between close-set buildings; the pavement is dry and intact, and traffic is light with no moving vehicles visible. A man directly ahead in the ego lane crosses from right to left at walking pace, briefly occupying the path. Farther ahead on the right near a parking area, two pedestrians linger and move slowly along the edge but remain outside the lane. Multiple cars are parked along the right curbside, narrowing the approach. A small side street joins at the near left, and no signals or posted speeds are visible.", "hazard_reasoning": "No immediate hazard is detected in the driving lanes. The parked vehicles do not obstruct vehicle movement but may reduce pedestrian visibility. Drivers should remain attentive and maintain their current speed to ensure safe travel."}
{"id": "train_01861", "split": "train", "clip_key": "2020-0129-144857_001612_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "001612"}, "frames": ["2020-0129-144857_001612_movie_t-3.jpg", "2020-0129-144857_001612_movie_t-2.jpg", "2020-0129-144857_001612_movie_t-1.jpg", "2020-0129-144857_001612_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision with stopped SUV", "environment_perception": "An urban two-way street with one lane in each direction runs between mid-rise buildings and tree-lined sidewalks, bordered by metal railings; the pavement looks dry and intact, and overall flow is light but momentarily queued ahead. A black SUV directly ahead in the ego lane is stopped due to traffic congestion ahead and constrains the ego vehicle's pace. Several oncoming cars travel steadily in the right-side opposing lane and do not affect the ego path. Bright sun glare from the upper left intermittently reduces forward visibility, but no signals or unusual signage are prominent.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, in the ego lane because of traffic congestion ahead. The driver should stop immediately to avoid collision with stopped SUV."}
{"id": "train_01862", "split": "train", "clip_key": "titan_clip_763_000522_movie", "source": {"subset": "titan", "scenario": "clip_763", "frame": "000522"}, "frames": ["titan_clip_763_000522_movie_t-3.jpg", "titan_clip_763_000522_movie_t-2.jpg", "titan_clip_763_000522_movie_t-1.jpg", "titan_clip_763_000522_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A dense urban commercial street with a single narrow undivided lane and smooth pavement runs between shopfronts; vehicular traffic is light while pedestrian activity is heavy. A pedestrian ahead walks along the center of the lane toward the camera and effectively governs the ego vehicle's pace. On the left side of the road, a man wearing black shorts, a T-shirt, open shoes, a shoulder handbag, and holding a phone walks along the edge and drifts slightly toward the lane, so he may enter our path. Near the left curb a woman with an umbrella and a companion step off the sidewalk to cross, potentially cutting across the lane ahead. Along the right storefronts another person with a phone walks close to the curb, and freestanding restaurant signs narrow the right edge of the roadway.", "hazard_reasoning": "There is a man wearing a pair of black shorts, a T-shirt, open shoes, a hanging handbag on his shoulder, holding a phone in his hand, walking on the left side of the road. The driver should carefully manoeuvre around this pedestrian to avoid a collision as he may step into the vehicle's path."}
{"id": "train_01863", "split": "train", "clip_key": "titan_clip_245_000132_movie", "source": {"subset": "titan", "scenario": "clip_245", "frame": "000132"}, "frames": ["titan_clip_245_000132_movie_t-3.jpg", "titan_clip_245_000132_movie_t-2.jpg", "titan_clip_245_000132_movie_t-1.jpg", "titan_clip_245_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "An urban two-way street runs between tall buildings, with one narrow lane per direction, no median, and smooth pavement; traffic is light with a few same-direction cars ahead moving steadily. Ahead on the left side of the roadway, a pedestrian wearing a white shirt and black pants and carrying a handbag walks away from the ego car along the lane, constraining its pace. Farther ahead in the ego lane, a small van followed by a sedan travels slowly toward the next block, keeping spacing tight. On the right sidewalk, a group of pedestrians, some with umbrellas, walks parallel to traffic near the curb and may step into the lane. Parked cars line the left curb, narrowing the usable space.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a handbag, walking on the left side of the road, away from the ego car. Therefore, the driver should be aware of the pedestrian to anticipate any unexpected crossing into the lane."}
{"id": "train_01864", "split": "train", "clip_key": "2020-0226-140503_010531_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "010531"}, "frames": ["2020-0226-140503_010531_movie_t-3.jpg", "2020-0226-140503_010531_movie_t-2.jpg", "2020-0226-140503_010531_movie_t-1.jpg", "2020-0226-140503_010531_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes each way and a planted median, dry pavement, and moderate traffic leads to a signalized intersection. A silver van ahead in the ego lane drives away through the junction as the light is green, opening distance from the ego vehicle. Oncoming cars to the right of the median approach and pass through the intersection in their lanes. A small van on the right cross street waits at its stop line, yielding to the through movement. The signal ahead shows green, and a 50 speed marking is visible on the road.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car, because of the green traffic lights. The wet road surface can reduce tire traction and increase braking distances, so maintaining proper following distance is advised."}
{"id": "train_01865", "split": "train", "clip_key": "titan_clip_239_000282_movie", "source": {"subset": "titan", "scenario": "clip_239", "frame": "000282"}, "frames": ["titan_clip_239_000282_movie_t-3.jpg", "titan_clip_239_000282_movie_t-2.jpg", "titan_clip_239_000282_movie_t-1.jpg", "titan_clip_239_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully", "environment_perception": "A narrow urban side street without a center line runs between tall buildings; the dry pavement is in good condition and traffic is light. On the left edge near the curb, a woman in a black dress carrying an umbrella walks toward the ego car and may step into the lane. Ahead in the middle of the lane, a small three-wheeled delivery vehicle moves slowly away from the camera, limiting space to pass. Farther ahead slightly right, a person pushes a cart along the roadway near stacked boxes, partially occupying the path. Boxes, a hand truck, and a parked bicycle encroach from the sides and further narrow the carriageway.", "hazard_reasoning": "There is a woman wearing a black dress and carrying an umbrella, walking on the left side of the road towards the ego car. This pedestrian may step into the vehicle's path unexpectedly, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_01866", "split": "train", "clip_key": "2020-0225-102455_008905_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "008905"}, "frames": ["2020-0225-102455_008905_movie_t-3.jpg", "2020-0225-102455_008905_movie_t-2.jpg", "2020-0225-102455_008905_movie_t-1.jpg", "2020-0225-102455_008905_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street lined with mid-rise buildings has one lane in each direction, a hatched buffer on the right, dry pavement, and light local traffic. A gray dump truck directly ahead in the ego lane slows, reportedly because of congestion further ahead, and it constrains the ego vehicle's pace. A small white van waits along the left curb ahead, remaining outside the travel lane. A service truck is parked in a recessed spot on the left near a building entrance. The opposite lane shows no close oncoming vehicles, and no salient traffic signals or speed signs are visible.", "hazard_reasoning": "There is a gray truck slowing down in the ego lane, because of traffic congestion ahead. Slow down is recommended because the truck's reduced speed indicates buildup of congestion ahead requiring lower speed to maintain safe distance."}
{"id": "train_01867", "split": "train", "clip_key": "titan_clip_771_000348_movie", "source": {"subset": "titan", "scenario": "clip_771", "frame": "000348"}, "frames": ["titan_clip_771_000348_movie_t-3.jpg", "titan_clip_771_000348_movie_t-2.jpg", "titan_clip_771_000348_movie_t-1.jpg", "titan_clip_771_000348_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial alley with a single narrow lane and no median stretches ahead; the pavement is clean and dry and overall movement is light and slow. Parked vehicles line the left, tightening the corridor. A white van ahead in the same lane stands nearly stopped, constraining the ego vehicle's pace. A black sedan is parked along the left curb just ahead, narrowing the usable lane beside it. On the right edge, a pedestrian wearing black pants and carrying a backpack walks away from the ego car along the roadside near the storefronts. Farther ahead near the center of the lane, another pedestrian walks away within the roadway, occupying part of the ego path.", "hazard_reasoning": "There is a pedestrian carrying a backpack and wearing black pants, walking on the right side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to maintain a safe distance and avoid collision."}
{"id": "train_01868", "split": "train", "clip_key": "2020-0203-154554_050060_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "050060"}, "frames": ["2020-0203-154554_050060_movie_t-3.jpg", "2020-0203-154554_050060_movie_t-2.jpg", "2020-0203-154554_050060_movie_t-1.jpg", "2020-0203-154554_050060_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multilane road runs under an elevated structure with dry, well-marked pavement and a roadside barrier on the left; same-direction traffic queues in multiple lanes, and flow is heavy and stopped at an intersection. A gray hatchback directly ahead in the ego lane is stopped because the signal is red, holding the ego vehicle. To the right, a small white flatbed truck creeps forward in the adjacent lane and angles slightly left near the hatchback, narrowing space ahead. Farther right, a dark van remains queued and stationary in its lane, parallel to the ego vehicle. Overhead traffic lights show solid red for the ego approach.", "hazard_reasoning": "There is a gray hatchback stopped in the ego lane, because of a red traffic light. The driver should stop to avoid a collision with the stopped hatchback."}
{"id": "train_01869", "split": "train", "clip_key": "2020-0226-101332_020435_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "020435"}, "frames": ["2020-0226-101332_020435_movie_t-3.jpg", "2020-0226-101332_020435_movie_t-2.jpg", "2020-0226-101332_020435_movie_t-1.jpg", "2020-0226-101332_020435_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Yield to the crossing cyclist", "environment_perception": "An urban signalized intersection with multiple lanes and no median is ahead, the ego vehicle waiting at a zebra crosswalk on smooth pavement while cross-street flow is moderate. Ahead, several small trucks and a white van move through the junction from left to right, occupying the intersection and constraining the ego vehicle's progress. At the near right, a cyclist wearing a purple coat rides across the crosswalk from right to left in front of the ego vehicle and may enter its lane. Far beyond the junction, cars on the opposite approach line up to cross or turn, creating background traffic without immediate interaction.", "hazard_reasoning": "There is a cycling wearing a purple coat and cycling across a crosswalk from right to left. The cyclist is crossing in the vehicle's path and requires you to yield to avoid a collision."}
{"id": "train_01870", "split": "train", "clip_key": "2020-0220-102630_045485_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "045485"}, "frames": ["2020-0220-102630_045485_movie_t-3.jpg", "2020-0220-102630_045485_movie_t-2.jpg", "2020-0220-102630_045485_movie_t-1.jpg", "2020-0220-102630_045485_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road runs under an elevated structure, with a fence and columns tight along the right edge; the pavement is dry and traffic is heavy and largely stopped. A gray box truck directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle at a standstill. In the adjacent left lane, a smaller tarp-covered truck slightly ahead-left waits in the queue and creeps intermittently, limiting an easy merge. Other vehicles line up farther ahead in both lanes. No salient signals or speed signs are visible, and the right-side barrier and columns leave a narrow margin beside the ego lane.", "hazard_reasoning": "There is a gray truck stopped in the ego lane because of traffic congestion ahead. Stop to avoid colliding with the halted vehicle due to upcoming traffic congestion."}
{"id": "train_01871", "split": "train", "clip_key": "2020-0212-102546_071552_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "071552"}, "frames": ["2020-0212-102546_071552_movie_t-3.jpg", "2020-0212-102546_071552_movie_t-2.jpg", "2020-0212-102546_071552_movie_t-1.jpg", "2020-0212-102546_071552_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-lane road in the ego direction runs alongside a metal fence median that separates oncoming traffic; the pavement is dry and smooth, and traffic in the ego's direction is slowed. A large yellow mixer truck is stopped directly ahead in the ego lane, blocking the path and constraining the ego car's pace. To the left, a white SUV slightly ahead proceeds slowly in the adjacent same-direction lane, limiting an immediate lane change around the stopped truck. On the far side of the median to the right, a few vehicles travel toward the camera without interacting. Overhead gantry signs and an elevated roadway are visible ahead.", "hazard_reasoning": "There is a yellow truck stopped in front of the ego car, in the ego lane. The driver should stop because the vehicle ahead is stationary at a red light, preventing potential rear-end collision."}
{"id": "train_01872", "split": "train", "clip_key": "2020-0213-143552_068734_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "068734"}, "frames": ["2020-0213-143552_068734_movie_t-3.jpg", "2020-0213-143552_068734_movie_t-2.jpg", "2020-0213-143552_068734_movie_t-1.jpg", "2020-0213-143552_068734_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two same-direction lanes tapering to one has a raised hedge median separating oncoming traffic, dry smooth pavement, and light steady flow. A white box truck ahead in the ego lane moves away at a moderate pace and effectively sets the ego vehicle's speed, consistent with the note that a white truck is driving in the ego lane away from the ego car. Oncoming cars on the far right beyond the median pass in the opposite direction without affecting the ego path. The right lane within the ego's carriageway ends at a merge gore, and no vehicles are using it.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The white truck may stop at the red traffic light ahead, so the driver should follow the vehicle ahead to maintain a safe distance."}
{"id": "train_01873", "split": "train", "clip_key": "2020-0207-101955_007220_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "007220"}, "frames": ["2020-0207-101955_007220_movie_t-3.jpg", "2020-0207-101955_007220_movie_t-2.jpg", "2020-0207-101955_007220_movie_t-1.jpg", "2020-0207-101955_007220_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-ending the minivan.", "environment_perception": "An urban divided arterial with a planted median to the right and smooth pavement; traffic is moderate but compresses ahead while oncoming flow beyond the median moves steadily. A black minivan directly ahead in the ego lane is stopped due to congestion, holding the ego vehicle. Farther ahead in the same lane, a white box truck is also stopped, forming the queue that constrains the minivan and our pace. On the left curb, a silver delivery truck remains parked in a service bay and stays out of the travel lane. An overhead blue guide sign provides lane directions for Route 302 toward multiple districts.", "hazard_reasoning": "There is a black minivan stopped in the ego lane, because traffic congestion. The driver should stop to avoid rear-ending the stopped minivan."}
{"id": "train_01874", "split": "train", "clip_key": "2020-0213-143552_032504_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "032504"}, "frames": ["2020-0213-143552_032504_movie_t-3.jpg", "2020-0213-143552_032504_movie_t-2.jpg", "2020-0213-143552_032504_movie_t-1.jpg", "2020-0213-143552_032504_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban street with tall buildings lines a single-lane road without a center divider; the pavement looks smooth and traffic is light as the route bends slightly left toward an elevated overpass. On the left just ahead, a white box truck is stopped at the curb in the ego lane, narrowing the usable lane and requiring passing on its right. Beside this truck, a pedestrian wearing a black vest stands near the rear attending the vehicle, remaining close to the carriageway and may enter the ego lane. Far ahead in the same direction, a couple of small vans proceed toward the overpass at low speed, lightly setting the pace.", "hazard_reasoning": "There is a pedestrian wearing a black vest, standing on the left side of the road, because they are attending a vehicle. The pedestrian may step into the travel lane unexpectedly while attending to the vehicle, requiring cautious maneuvering."}
{"id": "train_01875", "split": "train", "clip_key": "2020-0131-103016_069551_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "069551"}, "frames": ["2020-0131-103016_069551_movie_t-3.jpg", "2020-0131-103016_069551_movie_t-2.jpg", "2020-0131-103016_069551_movie_t-1.jpg", "2020-0131-103016_069551_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three lanes in the ego direction and smooth asphalt runs between mid-rise buildings, bounded by curbside railings, and traffic is light and steady. A small white box truck directly ahead in the ego lane slows, constraining the ego car's pace. A large white semi-trailer slightly ahead to the right continues straight in the adjacent lane, moving alongside and narrowing the space for a lane change. Pedestrians on the sidewalks remain behind the railings and do not approach the roadway.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane. The truck's unexpected deceleration could require the driver to brake abruptly to maintain a safe following distance, so the driver should slow down."}
{"id": "train_01876", "split": "train", "clip_key": "titan_clip_739_000318_movie", "source": {"subset": "titan", "scenario": "clip_739", "frame": "000318"}, "frames": ["titan_clip_739_000318_movie_t-3.jpg", "titan_clip_739_000318_movie_t-2.jpg", "titan_clip_739_000318_movie_t-1.jpg", "titan_clip_739_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with no lane markings and smooth asphalt shows light, slow traffic and no median. A large delivery truck is stopped along the left edge ahead, intruding into the roadway and narrowing the passage. On the left side near this truck, a pedestrian wearing a white T-shirt and carrying a handbag walks toward the ego car along the roadway and may enter the travel path. Farther ahead near the center-right, another pedestrian walks away along the street, sharing the lane and modestly constraining pace. A bicycle is parked by the right curb and an open garage entrance lines the right side.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and carrying a handbag, walking on the left side of the road, toward the ego car. The pedestrian could step into the vehicle's path unexpectedly; the driver should manoeuvre around the pedestrian to avoid collision."}
{"id": "train_01877", "split": "train", "clip_key": "titan_clip_175_000258_movie", "source": {"subset": "titan", "scenario": "clip_175", "frame": "000258"}, "frames": ["titan_clip_175_000258_movie_t-3.jpg", "titan_clip_175_000258_movie_t-2.jpg", "titan_clip_175_000258_movie_t-1.jpg", "titan_clip_175_000258_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the stopped van", "environment_perception": "An urban street approaches a narrow two-way intersection with no median, smooth pavement, and light traffic. A white van is stopped on the left side of the intersection facing toward the ego vehicle, waiting at the crosswalk and potentially entering the ego lane. Ahead in the same lane, a cyclist rides away near the right edge, moving steadily and likely to set the pace after the intersection. Two pedestrians walk away along the right sidewalk beyond the crosswalk, remaining clear of the roadway. A pedestrian crossing sign stands on the left at the intersection.", "hazard_reasoning": "There is a white van stopped on the left side of the intersection, towards the ego car. The stopped van could obstruct the vehicle's path or force sudden maneuvers, so the driver should be cautious."}
{"id": "train_01878", "split": "train", "clip_key": "2020-0204-150838_040404_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "040404"}, "frames": ["2020-0204-150838_040404_movie_t-3.jpg", "2020-0204-150838_040404_movie_t-2.jpg", "2020-0204-150838_040404_movie_t-1.jpg", "2020-0204-150838_040404_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial avenue with several same-direction lanes is separated by solid yellow and white lines; the pavement looks dry and smooth, and traffic is moderate. A white van ahead in the ego lane drives straight and gradually pulls away, effectively setting the ego car's pace. To the left, a silver hatchback runs slightly ahead in the adjacent lane, holding steady and limiting an immediate lane change left. On the right, a large crane truck stands stopped at the curb in the outer lane, creating a roadside obstruction near the ego path. An overhead blue guide sign indicates most lanes continue straight while the rightmost lane is for right turns.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01879", "split": "train", "clip_key": "titan_clip_283_000576_movie", "source": {"subset": "titan", "scenario": "clip_283", "frame": "000576"}, "frames": ["titan_clip_283_000576_movie_t-3.jpg", "titan_clip_283_000576_movie_t-2.jpg", "titan_clip_283_000576_movie_t-1.jpg", "titan_clip_283_000576_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with buildings tight to the curb has no median or centerline and smooth pavement; traffic appears light with no moving vehicles ahead or oncoming. On the right side ahead, a pedestrian wearing a white shirt and black pants walks away from the ego vehicle along the roadside, close to the travel lane and relevant as they remain near the path. Several bicycles and a scooter are parked along the curbs, slightly narrowing the usable edge space. A convex corner mirror mounted on a pole at the intersection improves visibility.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, walking along the right side of the road, away from the ego car. The driver should slow down because the pedestrian's proximity to the roadway poses a risk of sudden crossing."}
{"id": "train_01880", "split": "train", "clip_key": "2020-0203-114632_030397_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "030397"}, "frames": ["2020-0203-114632_030397_movie_t-3.jpg", "2020-0203-114632_030397_movie_t-2.jpg", "2020-0203-114632_030397_movie_t-1.jpg", "2020-0203-114632_030397_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban arterial with three same-direction lanes and painted lane lines only has smooth pavement and heavy, stop-and-go traffic. A white van directly ahead in the ego lane is stopped in a queue, holding the ego vehicle because of congestion. In the adjacent middle lane to the right, a box truck slightly ahead crawls forward alongside, reducing immediate space for a lane change. On the left sidewalk, several pedestrians walk behind a guardrail and remain clear of the roadway. Overhead a blue sign displays lane-use arrows for left turns and through lanes.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. The stopped van ahead creates a collision risk if the driver does not brake in time, so the driver must stop immediately under this situation."}
{"id": "train_01881", "split": "train", "clip_key": "2020-0212-102546_047227_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "047227"}, "frames": ["2020-0212-102546_047227_movie_t-3.jpg", "2020-0212-102546_047227_movie_t-2.jpg", "2020-0212-102546_047227_movie_t-1.jpg", "2020-0212-102546_047227_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban arterial under an elevated expressway carries moderate traffic on two same-direction lanes with a right-side merge; the pavement is dry and intact, and flow eases toward a queue ahead. A white truck far ahead in the ego lane slows in congestion and sets the pace for the ego car. A white SUV slightly ahead in the adjacent right lane proceeds steadily without encroaching on the ego lane. On the near right, a black car waits at the merge, yielding before entering the traffic stream. A parked service truck and barriers on the right shoulder remain outside the travel lane.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The white truck's deceleration indicates queued traffic ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_01882", "split": "train", "clip_key": "titan_clip_4_000180_movie", "source": {"subset": "titan", "scenario": "clip_4", "frame": "000180"}, "frames": ["titan_clip_4_000180_movie_t-3.jpg", "titan_clip_4_000180_movie_t-2.jpg", "titan_clip_4_000180_movie_t-1.jpg", "titan_clip_4_000180_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban shopping street with brick paving and no center divider runs straight between storefronts, the ego car proceeding along a single shared lane in light, slow traffic. Far ahead in the same lane, a white van moves away at low speed, effectively setting the pace. In the center of the roadway ahead, a pedestrian wearing black pants and carrying a bag walks away from the ego vehicle in the middle of the lane, occupying the ego path. Closer to the left, small groups of pedestrians stand and mill near the curb outside shops, some edging toward the lane and potentially stepping out. On the right, another pedestrian walks along the edge by a driveway with cones, keeping close to the storefronts.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying a bag who is walking in the middle of the road, away from the ego car. The pedestrian is walking in the middle of the road ahead; the driver should carefully manoeuvre around them to avoid collision."}
{"id": "train_01883", "split": "train", "clip_key": "2020-0207-101955_007957_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "007957"}, "frames": ["2020-0207-101955_007957_movie_t-3.jpg", "2020-0207-101955_007957_movie_t-2.jpg", "2020-0207-101955_007957_movie_t-1.jpg", "2020-0207-101955_007957_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision ahead", "environment_perception": "An urban multi-lane arterial runs straight between high-rise buildings, with a raised planted median on the right separating oncoming traffic and the pavement in good condition; traffic is heavy and slow. A black car directly ahead in the ego lane is stopped because of congestion further up the road, holding the ego vehicle. To the left, a silver box truck waits in a curbside bay and could merge back into the lane near the intersection. Oncoming vehicles move past behind the median without interacting. An overhead blue guide sign indicates Route 302 toward Kitashinjuku and Iidabashi.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a collision with the stationary vehicle under this situation."}
{"id": "train_01884", "split": "train", "clip_key": "2020-0203-154554_022428_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "022428"}, "frames": ["2020-0203-154554_022428_movie_t-3.jpg", "2020-0203-154554_022428_movie_t-2.jpg", "2020-0203-154554_022428_movie_t-1.jpg", "2020-0203-154554_022428_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban arterial with smooth pavement runs between tall buildings, divided by a low planted median on the right that separates oncoming lanes; traffic is moderate to heavy with a visible queue ahead. A black sedan directly ahead in the ego lane slows with brake lights because congestion forms in front, constraining the ego car's pace. A white hatchback slightly ahead in the left lane proceeds straight at a similar speed and stays in its lane beside the ego vehicle. Farther ahead, several same-direction cars creep toward the queue, while oncoming vehicles across the median, including a bus, move toward the camera without interacting.", "hazard_reasoning": "There's a black sedan in front of the ego-car in the ego lane slowing down, because of traffic congestion ahead. The sedan's braking indicates a buildup of traffic ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_01885", "split": "train", "clip_key": "2020-0212-102546_024986_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "024986"}, "frames": ["2020-0212-102546_024986_movie_t-3.jpg", "2020-0212-102546_024986_movie_t-2.jpg", "2020-0212-102546_024986_movie_t-1.jpg", "2020-0212-102546_024986_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way road approaches a signalized intersection with smooth pavement and a low hedge along the right edge; traffic is moderate to heavy with a short queue forming. Directly ahead in the ego lane, a red hatchback slows to a near stop before the crosswalk because congestion ahead compresses the queue, and it controls the ego vehicle's pace. Farther ahead slightly right, a large box truck also waits at the junction, adding to the backup. On the cross street to the right, several cars proceed through the intersection from right to left, keeping the junction occupied.", "hazard_reasoning": "There is a red hatchback slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adapt to the reduced speed of the vehicle in front due to congestion."}
{"id": "train_01886", "split": "train", "clip_key": "2020-0226-140503_081091_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "081091"}, "frames": ["2020-0226-140503_081091_movie_t-3.jpg", "2020-0226-140503_081091_movie_t-2.jpg", "2020-0226-140503_081091_movie_t-1.jpg", "2020-0226-140503_081091_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision at the red light", "environment_perception": "An urban multi-lane arterial with smooth asphalt carries heavy traffic that queues at an intersection. The ego lane is stopped, and a white hatchback directly ahead is stationary because the overhead signal shows red. In the left adjacent lane, a large box truck is also stopped slightly ahead, limiting the view forward and pacing the queue. To the right, cars in the two adjacent lanes line up and creep intermittently but remain constrained by the red light. Farther ahead the flow stays dense between mid-rise buildings.", "hazard_reasoning": "A white hatchback is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to avoid collision at the red light."}
{"id": "train_01887", "split": "train", "clip_key": "2020-0207-101955_092316_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "092316"}, "frames": ["2020-0207-101955_092316_movie_t-3.jpg", "2020-0207-101955_092316_movie_t-2.jpg", "2020-0207-101955_092316_movie_t-1.jpg", "2020-0207-101955_092316_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multilane arterial runs beneath an elevated expressway, the pavement smooth and lanes clearly marked as traffic moves slowly toward a signalized intersection. A blue sedan is stopped directly ahead in the ego lane for the red light, holding the ego vehicle in place. To the left, a flatbed truck carrying a white minivan travels slightly ahead in the adjacent lane and coasts to a stop at the same line, remaining alongside. In the lane to the right of the sedan, a large dump truck slows as it queues for the intersection beside the ego path. Overhead signals show red.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to avoid colliding with the halted sedan under the red signal."}
{"id": "train_01888", "split": "train", "clip_key": "2020-0228-102841_003747_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "003747"}, "frames": ["2020-0228-102841_003747_movie_t-3.jpg", "2020-0228-102841_003747_movie_t-2.jpg", "2020-0228-102841_003747_movie_t-1.jpg", "2020-0228-102841_003747_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "manoeuvre carefully around the lane barriers", "environment_perception": "A narrow urban street with smooth pavement shows light traffic and no vehicles immediately ahead, and metal lane barriers line the right side of the road. Two pedestrians stand on the left sidewalk near a building entrance at the curb, stationary and close to the edge while remaining off the roadway. Farther ahead on the right, a pedestrian walks along the sidewalk parallel to the lane, staying behind the barrier and not moving toward the road. No salient signals or speed signs are visible, and the lane remains clear of obstacles.", "hazard_reasoning": "There are lane barriers on the right side of the road. The barriers encroach on the usable lane and could force a sudden manoeuvre, so the driver should carefully manoeuvre around them."}
{"id": "train_01889", "split": "train", "clip_key": "titan_clip_267_000744_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_267_000744_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_267_000744_movie_t-3_augB1.jpg", "titan_clip_267_000744_movie_t-2_augB1.jpg", "titan_clip_267_000744_movie_t-1_augB1.jpg", "titan_clip_267_000744_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian on road", "environment_perception": "An urban back street with a single-lane two-way road and no median runs between low-rise buildings; the pavement is smooth and traffic is very light with no oncoming vehicles. Ahead on the left side of the lane, a pedestrian in a white shirt and black pants carrying a suitcase walks away from the ego vehicle, occupying the travel path and constraining speed. Farther ahead near the center, another pedestrian proceeds in the same direction within the lane. Parked bicycles and planters line the right edge, narrowing clearance.", "hazard_reasoning": "There is a male pedestrian wearing a white shirt, black pants and carrying a suitcase, walking on the left side of the road, away from the ego car. The pedestrian is on the road and may change direction or step into the vehicle's path, so the driver should be cautious."}
{"id": "train_01890", "split": "train", "clip_key": "2020-0210-101957_006341_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "006341"}, "frames": ["2020-0210-101957_006341_movie_t-3.jpg", "2020-0210-101957_006341_movie_t-2.jpg", "2020-0210-101957_006341_movie_t-1.jpg", "2020-0210-101957_006341_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light", "environment_perception": "An urban two-way street with one lane each direction and a solid center line runs between shops and apartments; the asphalt looks smooth and traffic is light, bunching at an intersection ahead. A green sedan directly ahead in the ego lane is stopped at the stop line for a red signal, holding the ego vehicle. In the opposing lane to the right, a white van approaches the junction and continues straight, remaining in its lane and not affecting the ego path. The overhead traffic light for the ego direction shows red. Metal railings line both sidewalks and no obstacles encroach on the roadway.", "hazard_reasoning": "There is a green sedan stopped in the ego lane, because of the red traffic lights. You must stop to avoid a collision as the sedan has halted at the red light."}
{"id": "train_01891", "split": "train", "clip_key": "2020-0203-154554_018340_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "018340"}, "frames": ["2020-0203-154554_018340_movie_t-3.jpg", "2020-0203-154554_018340_movie_t-2.jpg", "2020-0203-154554_018340_movie_t-1.jpg", "2020-0203-154554_018340_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway tunnel carries a single left-hand lane curving gently left toward the bright exit; concrete walls and barriers line both sides, and the wet pavement glistens. No vehicles are visible ahead or merging, so traffic is empty. Small red lamps along the tunnel walls are illuminated, with no speed sign apparent. The curve leads out to daylight where city buildings and a guardrail appear beyond the portal.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01892", "split": "train", "clip_key": "titan_clip_361_000054_movie", "source": {"subset": "titan", "scenario": "clip_361", "frame": "000054"}, "frames": ["titan_clip_361_000054_movie_t-3.jpg", "titan_clip_361_000054_movie_t-2.jpg", "titan_clip_361_000054_movie_t-1.jpg", "titan_clip_361_000054_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban commercial street with a narrow single-lane roadway paved in interlocking bricks winds gently right between shops and trees, lined by bollards and without a center divider; traffic is light and no moving vehicles are visible ahead. On the left near the camera, a man in a dark suit walks along the sidewalk close to the curb at the corner, which may bring him toward the lane. Farther ahead on the left, a man in a white shirt walks parallel to the road near the bollards, staying near the edge and potentially entering the path. On the right, several pedestrians walk and stand near the curb by storefronts, their proximity along the edge constraining the ego-vehicle's pace. No notable signals or posted speeds are visible.", "hazard_reasoning": "There is a white truck parked, on the right side of the road, in front of the ego-car. The driver must carefully maneuver around the truck to avoid potential collisions as it reduces the available driving space."}
{"id": "train_01893", "split": "train", "clip_key": "titan_clip_1338_000246_movie", "source": {"subset": "titan", "scenario": "clip_1338", "frame": "000246"}, "frames": ["titan_clip_1338_000246_movie_t-3.jpg", "titan_clip_1338_000246_movie_t-2.jpg", "titan_clip_1338_000246_movie_t-1.jpg", "titan_clip_1338_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with one lane in each direction runs between buildings; the pavement is smooth and traffic is light with no moving vehicles. Ahead at the marked crosswalk, a pedestrian wearing a blue skirt and carrying a backpack crosses from left to right across the ego lane, occupying the path. Farther ahead in the same lane, another pedestrian walks away along the middle of the road. On the right curb beside the crosswalk, a man stands near a machine, remaining on the sidewalk. A parked bicycle rests at the left curb near the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a blue skirt, carrying a backpack, and crossing the street, from the left side to the right side, ahead at the crosswalk. The driver should stop to yield right-of-way to the pedestrian entering the vehicle's path at the marked crossing."}
{"id": "train_01894", "split": "train", "clip_key": "2020-0217-110854_026913_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "026913"}, "frames": ["2020-0217-110854_026913_movie_t-3.jpg", "2020-0217-110854_026913_movie_t-2.jpg", "2020-0217-110854_026913_movie_t-1.jpg", "2020-0217-110854_026913_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of lane changes ahead", "environment_perception": "Inside a lit urban tunnel, the ego car travels on a smooth two-lane same-direction roadway separated from opposing traffic by solid walls, and the flow is light to moderate. A large bus runs ahead in the ego lane at a steady speed and effectively sets the pace. To the left, a white sedan in the adjacent lane draws alongside and passes the ego car, continuing ahead slightly faster as stated. No oncoming traffic, pedestrians, or cyclists are visible, and the tunnel shows narrow shoulders and continuous lighting with no apparent obstructions.", "hazard_reasoning": "There is a white sedan passing the ego-car in the left lane. Be aware of the potential lane change as it may re-enter your path."}
{"id": "train_01895", "split": "train", "clip_key": "2020-0228-102841_082601_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "082601"}, "frames": ["2020-0228-102841_082601_movie_t-3.jpg", "2020-0228-102841_082601_movie_t-2.jpg", "2020-0228-102841_082601_movie_t-1.jpg", "2020-0228-102841_082601_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with three same-direction lanes passes between office buildings; pavement is smooth and traffic is moderate, easing to a slower pace. A small white box truck is directly ahead in the ego lane and slows as traffic ahead compresses, constraining the ego car's speed. In the adjacent left lane a white sedan travels slightly ahead at a similar slow pace, limiting a leftward lane change. Farther ahead in the right lane a white van proceeds steadily with little gap, occupying that option as well. Other vans and trucks continue ahead in the same direction, while a metal fence median separates any oncoming traffic out of view.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because traffic ahead is slowing. The white truck's reduced speed increases the risk of collision if the driver does not reduce speed to maintain a safe following distance."}
{"id": "train_01896", "split": "train", "clip_key": "titan_clip_1170_000138_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1170_000138_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1170_000138_movie_t-3_augB1.jpg", "titan_clip_1170_000138_movie_t-2_augB1.jpg", "titan_clip_1170_000138_movie_t-1_augB1.jpg", "titan_clip_1170_000138_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of pedestrian walking in roadway", "environment_perception": "An urban commercial alley with brick paving and a single narrow shared lane has no median and curves slightly right ahead; vehicle flow is light while foot traffic is dense. Ahead in the middle of the lane, a pedestrian in a blue shirt walks away from the camera amid the busy crowd, occupying the ego path. Farther ahead in the same lane, a cyclist rides away along the center, likely constraining speed. On the right edge by storefronts, several pedestrians walk along the curb and drift near the lane, so their movements may encroach on the path. Large columns and recessed entrances on the left create partial sightlines along the sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking in the middle of the road, away from the ego car, because the street is packed. The driver should be aware because this pedestrian walking in the roadway may change direction and enter the vehicle's path."}
{"id": "train_01897", "split": "train", "clip_key": "2020-0226-140503_034507_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "034507"}, "frames": ["2020-0226-140503_034507_movie_t-3.jpg", "2020-0226-140503_034507_movie_t-2.jpg", "2020-0226-140503_034507_movie_t-1.jpg", "2020-0226-140503_034507_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with van", "environment_perception": "An urban multi-lane arterial with smooth pavement approaches a junction, the ego car traveling in the left of two same-direction lanes beside a white guardrail and under an elevated expressway; traffic is slow. Directly ahead, a black van is stopped in the ego lane with brake lights on, constraining the ego car's movement. Slightly ahead to the right, a silver minivan in the adjacent lane is also stopped near the junction. On the separate roadway beyond the guardrail to the right, a few cars pass through the intersection without affecting the ego lane. Overhead blue direction signs point toward Shutoko and Mejiro, indicating upcoming route choices.", "hazard_reasoning": "There is a black van stopped in the ego lane, in front of the ego car. The van's brake lights indicate it may remain stationary or slow further, requiring you to stop promptly to avoid a collision."}
{"id": "train_01898", "split": "train", "clip_key": "titan_clip_698_000204_movie", "source": {"subset": "titan", "scenario": "clip_698", "frame": "000204"}, "frames": ["titan_clip_698_000204_movie_t-3.jpg", "titan_clip_698_000204_movie_t-2.jpg", "titan_clip_698_000204_movie_t-1.jpg", "titan_clip_698_000204_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with smooth asphalt and no lane markings or median shows light traffic and no moving vehicles. Ahead, a woman pushing a stroller walks in the middle of the road and shifts toward the right side, occupying the travel lane and constraining the ego vehicle's path. Farther ahead near the right curb, another pedestrian continues along the edge without entering the lane. Parked bicycles line the right sidewalk, and sandwich-board signs near storefronts sit close to the curb but remain off the roadway.", "hazard_reasoning": "There is a woman pushing a stroller and walking in the middle of the road, toward the right side. The pedestrian may cross unpredictably into the path of the vehicle, so the driver should slow down to avoid a potential collision."}
{"id": "train_01899", "split": "train", "clip_key": "titan_clip_683_000540_movie", "source": {"subset": "titan", "scenario": "clip_683", "frame": "000540"}, "frames": ["titan_clip_683_000540_movie_t-3.jpg", "titan_clip_683_000540_movie_t-2.jpg", "titan_clip_683_000540_movie_t-1.jpg", "titan_clip_683_000540_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow urban shopping street without a median shows good pavement and very light vehicle traffic. A pedestrian in a blue T-shirt and blue pants carrying a backpack walks in front of the ego vehicle near the left half of the lane, moving toward the left side to get around a parked van and briefly constraining the path. Farther ahead, another pedestrian walks away along the middle of the roadway in the ego lane. On the right edge, a person stands beside a storefront under an awning close to the curb. A white van is parked on the left protruding into the lane, and shop displays crowd the sidewalk.", "hazard_reasoning": "There's a pedestrian carrying a backpack, wearing a blue t-shirt and blue pants, and walking in front of the ego car to the left side because of the parked vehicle. The driver should yield to the pedestrian because they are stepping into the roadway to bypass the obstruction and may enter the lane unexpectedly."}
{"id": "train_01900", "split": "train", "clip_key": "2020-0220-151845_005945_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "005945"}, "frames": ["2020-0220-151845_005945_movie_t-3.jpg", "2020-0220-151845_005945_movie_t-2.jpg", "2020-0220-151845_005945_movie_t-1.jpg", "2020-0220-151845_005945_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist on the left.", "environment_perception": "In a dense urban area, the ego-vehicle follows a single-lane road curving left, separated from a parallel multi-lane roadway on the right by a concrete wall; the asphalt appears newly paved and dry, with light flow in the ego lane and moderate traffic on the adjacent lanes. Ahead on the left edge of the ego lane, a cyclist wearing a backpack and black coat rides away from the ego car at a steady pace, likely determining the immediate pace. To the right beyond the divider, cars and trucks move parallel and remain segregated from the ego path. A signalized intersection with overhead direction signs is visible ahead. Pedestrians walk along the left sidewalk behind a railing and do not enter the road.", "hazard_reasoning": "There is a cyclist wearing a backpack and black coat, cycling on the left side of the road, away from the ego car. The driver should be aware because the cyclist could move unpredictably toward the traffic lane and may not be immediately visible around the curve."}
{"id": "train_01901", "split": "train", "clip_key": "2020-0221-115122_020205_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "020205"}, "frames": ["2020-0221-115122_020205_movie_t-3.jpg", "2020-0221-115122_020205_movie_t-2.jpg", "2020-0221-115122_020205_movie_t-1.jpg", "2020-0221-115122_020205_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the hatchback's lane change.", "environment_perception": "An urban arterial under an elevated expressway carries three same-direction lanes with dry, intact pavement and heavy stop-and-go flow. Ahead, a white hatchback from the left lane changes into the ego lane and merges directly in front, narrowing the gap and prompting slower movement. Farther ahead in the ego lane, a dark taxi sedan waits in the queue, constraining the pace. In the right lane, a dark minivan creeps forward alongside, remaining parallel to the ego vehicle.", "hazard_reasoning": "There is a white hatchback in front of the ego car, changing lanes from the left lane to the ego lane. The hatchback's unexpected lane change could reduce available space ahead, so the driver should stay vigilant and adjust accordingly."}
{"id": "train_01902", "split": "train", "clip_key": "titan_clip_40_000426_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_40_000426_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_40_000426_movie_t-3_augB1.jpg", "titan_clip_40_000426_movie_t-2_augB1.jpg", "titan_clip_40_000426_movie_t-1_augB1.jpg", "titan_clip_40_000426_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way carriageway lacks lane markings, and the brick-patterned pavement appears dry; traffic is light and slow. A pedestrian in a white shirt carrying a backpack walks ahead in the middle of the road, moving away along the ego vehicle's path. A small dark van further ahead proceeds in the same direction at low speed, effectively setting the pace. On the right edge, another pedestrian by a line of parked vans walks near the roadway and may step into the ego lane. Multiple vans are parked along the right, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and carrying a backpack, walking in the middle of the road, away from the ego car. The driver should slow down to maintain a safe distance and prevent a collision with the pedestrian."}
{"id": "train_01903", "split": "train", "clip_key": "2020-0226-101332_008813_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "008813"}, "frames": ["2020-0226-101332_008813_movie_t-3.jpg", "2020-0226-101332_008813_movie_t-2.jpg", "2020-0226-101332_008813_movie_t-1.jpg", "2020-0226-101332_008813_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop and yield to crossing pedestrians", "environment_perception": "An urban two-way street with a single lane per direction and no median is seen at an intersection; the pavement looks damp and traffic is light. Ahead at the crosswalk, a cyclist rides rightward across the intersection, moving through the ego path and briefly dictating the pace. In the opposing lane to the right, a white sedan approaches through the intersection, continuing straight as oncoming traffic and staying outside the ego lane. On the left curb in front of the ego vehicle, several pedestrians wearing face masks wait to cross at the crosswalk, likely to enter once permitted.", "hazard_reasoning": "There are pedestrians wearing face masks and waiting to cross at a crosswalk, from the left side, in front of the ego-car. The driver should stop because pedestrians are about to enter the crossing and have the right-of-way."}
{"id": "train_01904", "split": "train", "clip_key": "titan_clip_1245_000024_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1245_000024_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1245_000024_movie_t-3_augB1.jpg", "titan_clip_1245_000024_movie_t-2_augB1.jpg", "titan_clip_1245_000024_movie_t-1_augB1.jpg", "titan_clip_1245_000024_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban alley with a single unmarked lane runs between storefronts; the pavement is smooth, traffic is light, and metal railings narrow the right edge. A small utility truck is stopped ahead slightly right, partly occupying the lane and creating a choke point. In front of it, a pedestrian wearing black walks toward the ego vehicle in the middle of the road because the parked vehicle forces them off the side, directly affecting the path. Farther ahead by the left storefronts, another person walks away along the edge and remains clear of the lane. No traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing black clothing, walking towards the ego car in the middle of the road, because of the parked vehicle. The pedestrian may enter the ego-vehicle's path due to the sidewalk obstruction, so the driver needs to be aware to avoid a collision."}
{"id": "train_01905", "split": "train", "clip_key": "2020-0227-104226_017863_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "017863"}, "frames": ["2020-0227-104226_017863_movie_t-3.jpg", "2020-0227-104226_017863_movie_t-2.jpg", "2020-0227-104226_017863_movie_t-1.jpg", "2020-0227-104226_017863_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane road runs under an elevated expressway, with smooth pavement and a diverging ramp on the right separated by diagonal hatching; traffic is moderate and moving steadily. A black sedan is directly ahead in the ego lane, continuing straight at a moderate pace as it follows vehicles farther ahead. To the left, a silver taxi travels slightly ahead in the adjacent lane, maintaining speed parallel to the ego vehicle. Farther ahead in the left lane, a small white box truck proceeds slowly, shaping the overall flow. On the right, a large refrigerated truck stands in the striped gore beside the ramp, stationary and close to the carriageway, creating a roadside obstacle. Overhead guide boards and a 3.8 m clearance sign mark the approach to the ramp.", "hazard_reasoning": "No caption available. There are no detectable hazards ahead, so the driver can maintain the current speed safely."}
{"id": "train_01906", "split": "train", "clip_key": "2020-0212-102546_080775_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "080775"}, "frames": ["2020-0212-102546_080775_movie_t-3.jpg", "2020-0212-102546_080775_movie_t-2.jpg", "2020-0212-102546_080775_movie_t-1.jpg", "2020-0212-102546_080775_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided roadway runs in a concrete trench with smooth asphalt and light traffic, moving from a shaded underpass toward open sky beneath an approaching pedestrian overbridge. Two same-direction lanes are visible with a narrow right shoulder and no opposing traffic. A white van directly ahead in the ego lane cruises steadily because the road ahead is clear, mildly constraining the ego car's pace but not braking or changing lanes. No other road users are close, and no salient signals or unusual signs appear.", "hazard_reasoning": "There is a white van driving in front of the ego car, in the ego lane, because the road ahead is clear. The driver should follow the vehicle ahead to maintain safe distance and anticipate its movements."}
{"id": "train_01907", "split": "train", "clip_key": "2020-0218-151547_007926_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "007926"}, "frames": ["2020-0218-151547_007926_movie_t-3.jpg", "2020-0218-151547_007926_movie_t-2.jpg", "2020-0218-151547_007926_movie_t-1.jpg", "2020-0218-151547_007926_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection with smooth pavement and light-to-moderate flow is viewed from a left-side approach. A silver-and-black scooter is stopped immediately ahead in the ego lane, waiting because vehicles are turning through the junction. Two large buses ahead cross from left to right, turning across the ego vehicle's path and temporarily blocking the lane. A black van in the neighboring right same-direction lane moves toward the intersection without directly affecting the ego's path.", "hazard_reasoning": "There is a silver-and-black scooter stopped in front of the ego car in the ego lane, because of vehicles turning on the intersection ahead. You should stop to avoid colliding with the halted scooter blocking your path."}
{"id": "train_01908", "split": "train", "clip_key": "2020-0203-154554_080083_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "080083"}, "frames": ["2020-0203-154554_080083_movie_t-3.jpg", "2020-0203-154554_080083_movie_t-2.jpg", "2020-0203-154554_080083_movie_t-1.jpg", "2020-0203-154554_080083_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the vehicle to avoid a collision.", "environment_perception": "An urban arterial with multiple same-direction lanes and no physical median shows dry, well-marked pavement and heavy, slow traffic. A white sedan directly ahead in the ego lane is stopped because of congestion ahead, keeping the ego vehicle stationary. Farther ahead in the same lane, a white van and other cars wait in the queue and limit movement. To the right, a dark sedan in the adjacent lane inches forward alongside, close to the queue and potentially merging into gaps. Buildings and leafless roadside trees line both sides, and no pedestrians or cyclists are visible.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car in the ego lane, because of traffic congrstion ahead. Stop behind the vehicle to avoid a collision, as the sedan ahead is halted due to congestion."}
{"id": "train_01909", "split": "train", "clip_key": "titan_clip_1374_000276_movie", "source": {"subset": "titan", "scenario": "clip_1374", "frame": "000276"}, "frames": ["titan_clip_1374_000276_movie_t-3.jpg", "titan_clip_1374_000276_movie_t-2.jpg", "titan_clip_1374_000276_movie_t-1.jpg", "titan_clip_1374_000276_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian.", "environment_perception": "A narrow urban two-way street with smooth pavement and no centerline is clear of motor traffic, with no vehicles ahead or oncoming. A pedestrian wearing a white shirt, black pants, and a backpack crosses in front of the ego car from the right curb to the left, constraining the ego's pace. On the left edge, two men walk close to the lane near the ego path, which may bring them into the roadway. On the right side, two pedestrians walk along the curb toward the camera direction, occasionally looking toward the street and potentially stepping out after the crosser. No traffic signals or marked crosswalks are visible, and a row of parked bicycles lines the left side, tightening the margin.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a backpack, crossing the street in front of the ego car, from the right side of the street to the left side. The pedestrian is directly in the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_01910", "split": "train", "clip_key": "2020-0131-135401_040119_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "040119"}, "frames": ["2020-0131-135401_040119_movie_t-3.jpg", "2020-0131-135401_040119_movie_t-2.jpg", "2020-0131-135401_040119_movie_t-1.jpg", "2020-0131-135401_040119_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately for the pedestrian crossing ahead", "environment_perception": "An urban bidirectional street runs between shops, marked by a solid yellow centerline and dry, smooth pavement; traffic is light with a brief slowdown. Ahead in the ego lane, a white hatchback slows to a stop to yield to a pedestrian crossing the road, temporarily setting the pace. A person steps from the right side and walks across the ego lane near the middle of the carriageway, then continues across until the path clears. An oncoming car proceeds in its lane on the right without interaction. A no-parking sign is posted on the left sidewalk.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane because of a pedestrian crossing ahead on the road. The driver should stop immediately for the pedestrian crossing ahead, as the halted hatchback indicates pedestrians entering the roadway."}
{"id": "train_01911", "split": "train", "clip_key": "2020-0127-132751_100477_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "100477"}, "frames": ["2020-0127-132751_100477_movie_t-3.jpg", "2020-0127-132751_100477_movie_t-2.jpg", "2020-0127-132751_100477_movie_t-1.jpg", "2020-0127-132751_100477_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "A suburban two-lane road with a solid yellow centerline runs straight past small shops, the ego vehicle traveling in the left lane on dry but worn pavement with light to moderate flow. A gray van directly ahead in the ego lane slows, constraining the ego's pace due to traffic congestion ahead. Two pedestrians on the left sidewalk near the curb walk toward the camera while remaining on the walkway. A third pedestrian on the right sidewalk walks away from the camera along the curb. No salient traffic signals or unusual signs appear, and the oncoming lane to the right stays clear in view.", "hazard_reasoning": "There is a gray van slowing down in front of the ego car because of traffic congestion ahead. The driver should slow down to maintain a safe following distance due to the van's deceleration in congested traffic."}
{"id": "train_01912", "split": "train", "clip_key": "2020-0225-102455_016245_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "016245"}, "frames": ["2020-0225-102455_016245_movie_t-3.jpg", "2020-0225-102455_016245_movie_t-2.jpg", "2020-0225-102455_016245_movie_t-1.jpg", "2020-0225-102455_016245_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction and a painted median runs straight under rows of trees; the pavement is smooth and traffic is light. The ego vehicle proceeds in the left lane as a white box truck directly ahead in the same lane slows, constraining the ego's pace. In the opposite direction to the right, a white car approaches in its lane and continues through without interacting. Along the far-right curb, a silver van is stopped outside the travel lane. A signalized intersection with a wide zebra crossing lies ahead amid midrise buildings.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The truck's reduced speed ahead increases the risk of a rear-end collision, so the driver should adjust speed to maintain a safe following distance."}
{"id": "train_01913", "split": "train", "clip_key": "2020-0207-101955_015792_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_015792_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_015792_movie_t-3_augB1.jpg", "2020-0207-101955_015792_movie_t-2_augB1.jpg", "2020-0207-101955_015792_movie_t-1_augB1.jpg", "2020-0207-101955_015792_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane road with solid yellow lane dividers and a separated red-painted bicycle lane on the left is visible; the pavement is good and traffic moves slowly in heavy congestion. A blue hatchback directly ahead in the ego lane slows because of congestion, constraining the ego vehicle's pace. To the right, a white flatbed truck travels alongside in the next lane at a similar low speed, limiting any chance to merge. Farther ahead, a queue of vans and a box truck blocks both lanes and maintains the slowdown. Pedestrians and cyclists proceed along the fenced side path on the left, remaining outside the roadway.", "hazard_reasoning": "There is a blue hatchback slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_01914", "split": "train", "clip_key": "titan_clip_237_000078_movie", "source": {"subset": "titan", "scenario": "clip_237", "frame": "000078"}, "frames": ["titan_clip_237_000078_movie_t-3.jpg", "titan_clip_237_000078_movie_t-2.jpg", "titan_clip_237_000078_movie_t-1.jpg", "titan_clip_237_000078_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban side street with shops tightly lining both sides has a two-way carriageway without a centerline or median, smooth pavement, and very light traffic as the car moves ahead. A pedestrian in the mid-distance crosses from the left toward the right storefronts, entering the ego vehicle's path and briefly constraining its pace. Farther ahead a small white van is stopped along the right curb, protruding slightly into the lane and narrowing the passage. Another person stands by the right-hand shop near a signboard at the edge of the roadway, remaining stationary. Bicycles are parked along the left wall, shop displays and crates line the right, and a single orange cone sits by the left curb; no salient signals are visible.", "hazard_reasoning": "No caption available. No potential hazards detected; stationary items on the roadside do not encroach on the driving lane, so no immediate action is required."}
{"id": "train_01915", "split": "train", "clip_key": "titan_clip_1298_000438_movie", "source": {"subset": "titan", "scenario": "clip_1298", "frame": "000438"}, "frames": ["titan_clip_1298_000438_movie_t-3.jpg", "titan_clip_1298_000438_movie_t-2.jpg", "titan_clip_1298_000438_movie_t-1.jpg", "titan_clip_1298_000438_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around construction work.", "environment_perception": "A narrow urban street lined with shops and trees has a single unmarked lane, no median, and dry pavement; overall traffic is light with no moving vehicles ahead or oncoming. On the left there is construction work, with a crane truck and other work vehicles stopped behind orange cones, which narrows the ego vehicle's path. Near the ego on the left, a blue truck is parked partially in the lane, reducing clearance and shifting the open path to the right. On the right sidewalk, a pedestrian near a shop entrance walks along the storefronts while remaining on the sidewalk. Orange cones and cut branches lie along the left curb to delineate the work zone, and no traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is construction work on the left side. The parked vehicles and cones partially obstruct the road and sidewalk, reducing space and visibility, so the driver must manoeuvre carefully around the construction work to avoid obstacles and ensure pedestrian safety."}
{"id": "train_01916", "split": "train", "clip_key": "titan_clip_230_000528_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_230_000528_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_230_000528_movie_t-3_augB1.jpg", "titan_clip_230_000528_movie_t-2_augB1.jpg", "titan_clip_230_000528_movie_t-1_augB1.jpg", "titan_clip_230_000528_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with a single lane and brick pavement runs between tall buildings; there is no median, traffic is light, and the lane is partially obstructed by stopped vehicles on the right. A pedestrian dressed in black with a handbag walks away from the ego vehicle in the middle of the lane because the curbside is blocked, placing them in the ego path. Another pedestrian is at the right edge beside a white van, moving close to the roadway and potentially entering the lane. Farther ahead, a cyclist rides away near the center, which could constrain the pace. A large box truck and the white van are stopped on the right, narrowing the passage and creating a short blind area.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, a black cap, and black pants, carrying a handbag, and walking away from the ego car, in the middle of the road, because of the parked vehicle. This pedestrian is walking in the middle of the road due to the parked vehicle, requiring the driver to carefully manoeuvre to maintain a safe distance."}
{"id": "train_01917", "split": "train", "clip_key": "2020-0203-154554_033886_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "033886"}, "frames": ["2020-0203-154554_033886_movie_t-3.jpg", "2020-0203-154554_033886_movie_t-2.jpg", "2020-0203-154554_033886_movie_t-1.jpg", "2020-0203-154554_033886_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Be aware of the motorcycle merging lanes ahead", "environment_perception": "An urban scene unfolds under an elevated structure on a two-lane one-way road with a left curb and a right guardrail beside construction; the pavement is dry and traffic is slow. A large white coach bus directly ahead in the ego lane rolls at low speed, constraining the ego vehicle's pace. In the adjacent right lane a small white kei truck travels slightly ahead at a similar speed, staying close to the bus and keeping the gap tight. A green motorcycle to the right of the ego car filters between lanes and pulls away, briefly passing near the lane line but moving away from the car. No-parking signs are posted along the left side, and no signals or intersections are visible.", "hazard_reasoning": "There is a green motorcycle driving between lanes, to the right of the ego car and away from the ego car. Be aware of the motorcycle merging lanes ahead."}
{"id": "train_01918", "split": "train", "clip_key": "2020-0225-102455_042117_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "042117"}, "frames": ["2020-0225-102455_042117_movie_t-3.jpg", "2020-0225-102455_042117_movie_t-2.jpg", "2020-0225-102455_042117_movie_t-1.jpg", "2020-0225-102455_042117_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with two same-direction lanes is bordered by a guardrail and hedge on the right and sidewalks with mid-rise buildings on the left; the pavement is smooth with large 50 markings, and traffic is moderate. A white box truck directly ahead in the ego lane gradually slows because of traffic congestion and controls the ego car's pace. A small group of pedestrians walks along the left sidewalk near the curb and remains off the roadway. No oncoming traffic is visible due to the divider, and a blue painted bicycle lane runs along the left edge.", "hazard_reasoning": "A white truck is slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01919", "split": "train", "clip_key": "2020-0129-144857_043496_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "043496"}, "frames": ["2020-0129-144857_043496_movie_t-3.jpg", "2020-0129-144857_043496_movie_t-2.jpg", "2020-0129-144857_043496_movie_t-1.jpg", "2020-0129-144857_043496_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial runs under an elevated expressway, with two lanes in our direction, no physical median, dry pavement, and moderate flow approaching a signalized intersection. A white box truck directly ahead in the ego lane slows toward the crosswalk, constraining our pace. A small white van slightly ahead to the left continues straight in the adjacent lane and pulls away, remaining clear of our path. On the cross street to the right, a dark car waits near the corner without entering our lane. Overhead traffic lights and gantry signs span the intersection.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The white truck ahead is decelerating, so the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_01920", "split": "train", "clip_key": "2020-0127-132751_096736_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "096736"}, "frames": ["2020-0127-132751_096736_movie_t-3.jpg", "2020-0127-132751_096736_movie_t-2.jpg", "2020-0127-132751_096736_movie_t-1.jpg", "2020-0127-132751_096736_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban commercial corridor with two lanes in the ego direction and opposing lanes separated only by paint; the asphalt is dry and intact, and traffic is moderate with a short queue ahead. A silver van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. A tall box truck further ahead in the same lane also waits, forming part of the queue and constraining pace. In the opposing lanes to the right, a dark minivan and a small white van approach steadily within their lane and do not affect the ego path. Overhead traffic signals are visible in the distance but their aspect is not clear.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, because of traffic congestion ahead. The traffic jam has halted vehicles, so the driver must stop to prevent a rear-end collision."}
{"id": "train_01921", "split": "train", "clip_key": "2020-0213-143552_055979_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "055979"}, "frames": ["2020-0213-143552_055979_movie_t-3.jpg", "2020-0213-143552_055979_movie_t-2.jpg", "2020-0213-143552_055979_movie_t-1.jpg", "2020-0213-143552_055979_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction approaches an intersection beneath an elevated expressway, separated from oncoming lanes by painted medians; the pavement is smooth and traffic is moderate. A large white box truck directly ahead in the ego lane slows, constraining the ego car's pace. In the adjacent right same-direction lane, two small vans continue forward at a steady speed and may pass the ego vehicle as they clear the slowing truck. On the right sidewalk near the crosswalk, a pedestrian waits at the curb without stepping into the roadway. Oncoming vehicles travel independently on the far side of the median with no immediate interaction.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The truck's deceleration reduces available stopping distance, so the driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01922", "split": "train", "clip_key": "2020-0205-103411_072809_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "072809"}, "frames": ["2020-0205-103411_072809_movie_t-3.jpg", "2020-0205-103411_072809_movie_t-2.jpg", "2020-0205-103411_072809_movie_t-1.jpg", "2020-0205-103411_072809_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs beneath an elevated expressway with a metal-railed island on the right and smooth pavement; traffic is light and flows steadily. A white truck directly ahead in the ego lane moves forward through a green light, effectively setting the ego vehicle's pace. A car in the adjacent left lane continues straight slightly ahead, remaining in its lane without encroaching. Another vehicle waits near the left-side corner by the intersection, outside the ego path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01923", "split": "train", "clip_key": "titan_clip_504_000150_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_504_000150_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_504_000150_movie_t-3_augB1.jpg", "titan_clip_504_000150_movie_t-2_augB1.jpg", "titan_clip_504_000150_movie_t-1_augB1.jpg", "titan_clip_504_000150_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban road with no centerline runs between buildings on the left and a guardrail with a vine-covered fence on the right, and the worn pavement curves slightly left; traffic is very light with no vehicles present. Ahead on the left, a small group of pedestrians walks toward the ego-vehicle in the roadway, occupying part of the lane and potentially entering its path. No salient signals or posted speeds are visible, and the bend plus the close guardrail create a constrained passage.", "hazard_reasoning": "There is a group of people walking in the middle of the road, toward the ego-car. The driver should slow down because pedestrians are entering the travel lane and may cross unpredictably."}
{"id": "train_01924", "split": "train", "clip_key": "2020-0205-152530_048741_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "048741"}, "frames": ["2020-0205-152530_048741_movie_t-3.jpg", "2020-0205-152530_048741_movie_t-2.jpg", "2020-0205-152530_048741_movie_t-1.jpg", "2020-0205-152530_048741_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs between tall buildings, divided from oncoming traffic by a low planted median; the red-paved surface is smooth and traffic is moderate, beginning to move through the intersection. Ahead in the ego lane, a white minitruck accelerates from a stop as the signal turns green, leading the ego car and setting its pace. To the right, a black hatchback in the adjacent lane advances slightly ahead in the same direction, paralleling the ego vehicle and limiting an immediate lane change. On the left near the crosswalk, several pedestrians wait at the corner without stepping into the road. The overhead traffic light for the ego approach displays green.", "hazard_reasoning": "There is a white minitruck accelerating from a stop in the ego lane, in front of the ego car, because the traffic lights have turned green. The driver should start moving promptly to follow the flow of traffic and avoid a rear-end situation."}
{"id": "train_01925", "split": "train", "clip_key": "2020-0127-132751_103040_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "103040"}, "frames": ["2020-0127-132751_103040_movie_t-3.jpg", "2020-0127-132751_103040_movie_t-2.jpg", "2020-0127-132751_103040_movie_t-1.jpg", "2020-0127-132751_103040_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A suburban two-lane two-way road with a solid yellow centerline and no median stretches ahead; the dry pavement appears smooth and traffic is light. A silver van directly ahead in the left ego lane slows, setting the pace for the ego vehicle. An oncoming car proceeds in the right lane at a moderate distance, remaining separated by the centerline. A pedestrian walks along the right sidewalk parallel to traffic and keeps to the curb. A black car sits parked off the left curb near a driveway, narrowing the shoulder only.", "hazard_reasoning": "There is a silver van slowing in front of the ego car, in the ego lane. Since the van is decelerating, the driver should slow down to maintain a safe following distance and prevent a collision."}
{"id": "train_01926", "split": "train", "clip_key": "2020-0205-152530_048767_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "048767"}, "frames": ["2020-0205-152530_048767_movie_t-3.jpg", "2020-0205-152530_048767_movie_t-2.jpg", "2020-0205-152530_048767_movie_t-1.jpg", "2020-0205-152530_048767_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes on red pavement; a planted median separates oncoming traffic, and the surface looks smooth. Traffic is moderate and begins moving through the intersection as the overhead signals show green. A white delivery van directly ahead in the ego lane accelerates forward, setting the pace for the ego car. A black SUV slightly ahead in the right adjacent lane proceeds straight at a similar speed. Another dark car runs alongside at the near right edge in the right lane without merging. No pedestrians or cyclists enter the roadway, and no hazards are apparent.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01927", "split": "train", "clip_key": "2020-0220-102630_022190_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "022190"}, "frames": ["2020-0220-102630_022190_movie_t-3.jpg", "2020-0220-102630_022190_movie_t-2.jpg", "2020-0220-102630_022190_movie_t-1.jpg", "2020-0220-102630_022190_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging vehicle ahead", "environment_perception": "An urban multilane road with buildings on both sides and a center guardrail divides opposing traffic; the pavement looks smooth and traffic is heavy and slow. A white sedan just ahead in the ego lane is stopped with its right signal on and shifts right to change lanes because of congestion ahead. Farther ahead in the same lane, a large box truck is halted in the queue, constraining the ego vehicle's pace. In the adjacent right lane, a small covered truck creeps alongside, narrowing the gap for the sedan's merge and limiting the ego's options.", "hazard_reasoning": "There is a white sedan stopped and changing lanes from the ego lane to the right lane, because of traffic congestion ahead. The sedan's unexpected lane change may require you to adjust speed or position, so you should be prepared and maintain safe spacing."}
{"id": "train_01928", "split": "train", "clip_key": "2020-0218-103119_005295_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "005295"}, "frames": ["2020-0218-103119_005295_movie_t-3.jpg", "2020-0218-103119_005295_movie_t-2.jpg", "2020-0218-103119_005295_movie_t-1.jpg", "2020-0218-103119_005295_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban neighborhood scene shows the ego vehicle at a narrow two-way street meeting a perpendicular road, with no median and smooth, dry pavement; traffic is light with no moving vehicles visible. A zebra crosswalk spans the lane ahead, and a red-surfaced patch marks the junction area. A tall building tight to the right edge forms a blind corner onto the cross street. Along the left curb, bicycles are parked beside potted plants, remaining off the roadway. Near the corner, a small pile of rubble and a wooden box sit by a pole but do not intrude into the lane. No pedestrians or oncoming traffic appear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can proceed safely without additional caution."}
{"id": "train_01929", "split": "train", "clip_key": "titan_clip_61_000018_movie", "source": {"subset": "titan", "scenario": "clip_61", "frame": "000018"}, "frames": ["titan_clip_61_000018_movie_t-3.jpg", "titan_clip_61_000018_movie_t-2.jpg", "titan_clip_61_000018_movie_t-1.jpg", "titan_clip_61_000018_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian crossing ahead", "environment_perception": "An urban two-way street with no median runs between low-rise buildings; the pavement looks smooth and traffic is light. A pedestrian wearing a white shirt and black pants crosses in front of the ego vehicle from right to left, stepping out from the right sidewalk and moving through the ego lane. A white van stands just ahead along the left curb, its position partly intruding into the lane and narrowing the path. On the right edge, a worker pushes a small delivery cart near the curb, moving slowly parallel to the lane and close to the roadway. A roadside sign on the left shows a 30 speed limit.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, crossing the street in front of the ego car, from the right side to the left side. The driver should yield because the pedestrian is entering the vehicle's path and has the right of way at the crosswalk, requiring a reduction in speed and caution."}
{"id": "train_01930", "split": "train", "clip_key": "2020-0131-135401_079697_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "079697"}, "frames": ["2020-0131-135401_079697_movie_t-3.jpg", "2020-0131-135401_079697_movie_t-2.jpg", "2020-0131-135401_079697_movie_t-1.jpg", "2020-0131-135401_079697_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated divided road with two same-direction lanes climbs gently between high-rise buildings, the pavement smooth and traffic moderate and steady. A white van ahead in the ego lane drives uphill at a constant pace and gradually pulls away, increasing the gap. A yellow hatchback slightly ahead near the left edge of the ego lane holds a steady speed and briefly sets the ego vehicle's following distance. Cars in the adjacent right lane progress uphill in parallel, some moving slightly faster without indicating a merge. Oncoming traffic on the opposite carriageway moves continuously behind the concrete median, remaining fully separated from the ego vehicle's path.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. This van may decelerate or brake suddenly, so the driver should follow the vehicle ahead at a safe distance."}
{"id": "train_01931", "split": "train", "clip_key": "titan_clip_783_000192_movie", "source": {"subset": "titan", "scenario": "clip_783", "frame": "000192"}, "frames": ["titan_clip_783_000192_movie_t-3.jpg", "titan_clip_783_000192_movie_t-2.jpg", "titan_clip_783_000192_movie_t-1.jpg", "titan_clip_783_000192_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban, narrow two-way street with one lane each way has smooth pavement and light vehicle traffic, with a signalized intersection visible ahead. The ego lane is partially blocked on the left by a white van stopped with its rear open and a ramp deployed while people load it, encroaching into the lane. Ahead in the middle of the road, two women wearing white shirts carry handbags and walk away from the ego vehicle, moving there to pass the stopped van, and they occupy the ego path. Several pedestrians cluster near the van at the left edge and occasionally step close to the carriageway as they handle items. On the right, a group stands outside a convenience store by rows of parked bicycles, remaining on the sidewalk.", "hazard_reasoning": "There are two women wearing white shirts, carrying handbags, and walking in the middle of the road away from the ego-car, because of the white van parked on the left side. The driver should slow down to maintain a safe speed and avoid colliding with pedestrians walking in the lane."}
{"id": "train_01932", "split": "train", "clip_key": "2020-0228-102841_073407_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "073407"}, "frames": ["2020-0228-102841_073407_movie_t-3.jpg", "2020-0228-102841_073407_movie_t-2.jpg", "2020-0228-102841_073407_movie_t-1.jpg", "2020-0228-102841_073407_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped van", "environment_perception": "An urban multi-lane arterial through mid-rise buildings has three lanes in the ego direction, a metal barrier along the right separating parallel frontage lanes, smooth pavement, and moderate flow that slows near an intersection beneath an overpass. A white van ahead in the ego lane is stopped for a red light, blocking the lane and setting the pace. In the left lane slightly ahead, a small white hatchback continues straight while easing off toward the same stop without merging. On the separated lanes to the right, a car transporter truck and other vans move slowly parallel to the ego but remain isolated by the barrier.", "hazard_reasoning": "There is a white van stopped in the ego lane because of a red traffic light ahead. The driver needs to be aware of the stopped van to anticipate braking and maintain a safe following distance."}
{"id": "train_01933", "split": "train", "clip_key": "2020-0218-103119_045642_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "045642"}, "frames": ["2020-0218-103119_045642_movie_t-3.jpg", "2020-0218-103119_045642_movie_t-2.jpg", "2020-0218-103119_045642_movie_t-1.jpg", "2020-0218-103119_045642_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single lane in each direction and a double white center line has dry, smooth pavement, and traffic is light but paused at an intersection. A white semi truck is directly ahead in the ego lane, stopped because the overhead signal shows red, which holds the ego vehicle in place. Along the left curb beside the truck, a white hatchback is also stationary alongside, close to the ego path and may merge forward when movement resumes. Slightly ahead on the left, a small yellow flatbed truck waits near the curb facing the same direction, also queued at the light.", "hazard_reasoning": "There is a white semi truck stopped in front of the ego car in the ego lane because, of a red traffic light ahead. You must stop to avoid colliding with the halted vehicle."}
{"id": "train_01934", "split": "train", "clip_key": "titan_clip_560_000120_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_560_000120_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_560_000120_movie_t-3_augB1.jpg", "titan_clip_560_000120_movie_t-2_augB1.jpg", "titan_clip_560_000120_movie_t-1_augB1.jpg", "titan_clip_560_000120_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban shopping street without a centerline stretches ahead, with smooth reddish pavement and several manhole covers; vehicular flow is very light while pedestrians are common. The ego vehicle proceeds along a single shared lane bordered by storefronts and curbside signboards. A pedestrian wearing a black T-shirt and backpack walks toward the ego car in the middle of the lane directly ahead, constraining its path. On the right at the curb, a person stands beside a signboard close to the roadway and may step into the lane. Farther ahead on the left, two pedestrians walk along the edge in the same direction, staying clear of the path.", "hazard_reasoning": "There's a pedestrian wearing a black t-shirt, carrying a backpack, and walking in front of the ego car, toward the ego car. The driver should carefully manoeuvre to avoid a collision and ensure pedestrian safety."}
{"id": "train_01935", "split": "train", "clip_key": "2020-0225-145150_034560_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "034560"}, "frames": ["2020-0225-145150_034560_movie_t-3.jpg", "2020-0225-145150_034560_movie_t-2.jpg", "2020-0225-145150_034560_movie_t-1.jpg", "2020-0225-145150_034560_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with smooth pavement and a zebra crossing is shown, and traffic in the ego's direction is heavy and slow. The ego car follows a small blue truck directly ahead that is stopped because of congestion ahead. In the adjacent left lane a beige hatchback slightly ahead creeps forward parallel to the ego, limiting opportunities to change lanes. Farther ahead in the same direction, a green box truck and a larger container truck queue in the center lanes and move slowly, extending the backup. To the right side of the roadway, a separate stream of vehicles travels with lighter spacing, and a right-turn-only lane marking is visible.", "hazard_reasoning": "There is a blue truck stopped in front of the ego car, because of traffic congestion ahead. The driver needs to slow down to maintain a safe following distance and prevent a rear-end collision in the congested traffic."}
{"id": "train_01936", "split": "train", "clip_key": "2020-0207-151349_019422_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "019422"}, "frames": ["2020-0207-151349_019422_movie_t-3.jpg", "2020-0207-151349_019422_movie_t-2.jpg", "2020-0207-151349_019422_movie_t-1.jpg", "2020-0207-151349_019422_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road between tall buildings has smooth pavement and metal guardrails along the left, with moderate, slow-moving traffic. Bright low sun glare washes the view from the upper left as the road trends slightly right. A white box truck directly ahead in the ego lane slows and the ego car follows, so the truck controls the pace. To the right, a black SUV in the adjacent lane moves forward at a similar speed slightly ahead, limiting space for a lane change. On the far left behind a barrier, a cyclist rides parallel to traffic in a separated lane and remains outside the roadway.", "hazard_reasoning": "There's a white truck slowing in front of the ego car in the ego lane. The truck's deceleration may require sudden braking from the driver, so you should slow down to maintain a safe following distance."}
{"id": "train_01937", "split": "train", "clip_key": "2020-0226-140503_104302_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "104302"}, "frames": ["2020-0226-140503_104302_movie_t-3.jpg", "2020-0226-140503_104302_movie_t-2.jpg", "2020-0226-140503_104302_movie_t-1.jpg", "2020-0226-140503_104302_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban left-hand-traffic street with a single marked lane in the ego direction passes small shops, with a guardrail along the right edge; the pavement is dry and smooth, and overall flow is light. A gray semi truck is directly ahead in the ego lane, starting from a stop and moving slowly, constraining the ego car's pace. Vehicles are visible beyond the right-side guardrail on a separate street and do not interact with the ego lane.", "hazard_reasoning": "There is a gray semi truck stopped in the ego lane and starting to move slowly, in front of the ego car. Since the truck has begun to move slowly, the driver should start moving to maintain traffic flow and avoid falling behind."}
{"id": "train_01938", "split": "train", "clip_key": "2020-0226-101332_076509_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "076509"}, "frames": ["2020-0226-101332_076509_movie_t-3.jpg", "2020-0226-101332_076509_movie_t-2.jpg", "2020-0226-101332_076509_movie_t-1.jpg", "2020-0226-101332_076509_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "In a dense urban corridor with tall buildings, the ego vehicle queues in the middle of a multi-lane same-direction road bordered by a right-side median; the pavement is dry and traffic is heavy with frequent stops near a signalized intersection. A black taxi directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. In the left lane a white van slightly ahead is also stopped in the line, limiting any pass on that side. To the right a black sedan a little ahead remains halted with short gaps as other right-lane cars inch forward, constraining a right merge. A traffic signal and several regulatory signs are visible above the roadway.", "hazard_reasoning": "There is a black taxi stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain safe separation and prevent a collision with the halted vehicle."}
{"id": "train_01939", "split": "train", "clip_key": "titan_clip_1289_000048_movie", "source": {"subset": "titan", "scenario": "clip_1289", "frame": "000048"}, "frames": ["titan_clip_1289_000048_movie_t-3.jpg", "titan_clip_1289_000048_movie_t-2.jpg", "titan_clip_1289_000048_movie_t-1.jpg", "titan_clip_1289_000048_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of crossing pedestrian", "environment_perception": "An urban two-way side street with no centerline descends beyond a zebra crossing; the pavement is smooth and traffic is light. Orange bollards and railings line the entrance to the downhill lane. Ahead left, a pedestrian wearing a white shirt and carrying a backpack crosses rightward on the crosswalk in front of the ego path, constraining the approach. At the left curb by the building, another person stands near the corner, waiting off the lane. Far ahead at the bottom of the slope, a white car waits at the cross street, remaining distant from the ego lane. A 30 speed-limit sign is visible on the right.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, crossing the street at a pedestrian crossing, away from the ego car. The driver should be aware because the pedestrian may enter the vehicle's path unexpectedly."}
{"id": "train_01940", "split": "train", "clip_key": "2020-0207-101955_051135_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "051135"}, "frames": ["2020-0207-101955_051135_movie_t-3.jpg", "2020-0207-101955_051135_movie_t-2.jpg", "2020-0207-101955_051135_movie_t-1.jpg", "2020-0207-101955_051135_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be cautious of the van's lane change", "environment_perception": "An urban divided road with a hedge median and smooth asphalt runs between apartment buildings; there appear to be two lanes in the ego direction and traffic is light and flowing. Ahead, a white van changes lanes from the left lane into the ego lane, merging in front of the ego vehicle. Slightly farther ahead in the same lane, a black sedan continues straight at a steady pace, setting the speed for the vehicles behind. On the opposite side beyond the hedge, a red container truck travels the other way on its own carriageway, remaining separated from the ego path.", "hazard_reasoning": "There is a white van changing lanes in front of the ego car, from the left lane to the ego lane. The van's lane change could cut off the ego-vehicle's path, so the driver should be cautious to avoid a potential collision."}
{"id": "train_01941", "split": "train", "clip_key": "titan_clip_702_000018_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_702_000018_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_702_000018_movie_t-3_augB1.jpg", "titan_clip_702_000018_movie_t-2_augB1.jpg", "titan_clip_702_000018_movie_t-1_augB1.jpg", "titan_clip_702_000018_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban side street with a single narrow lane and no centerline is shown; the asphalt is smooth and traffic is light with no moving vehicles. A white truck is parked along the left curb, jutting into the lane. Ahead in the center of the roadway, a pedestrian wearing a cap and white shirt with a backpack walks away from the ego vehicle in the middle of the road because the parked truck blocks the left side, staying within the ego path. On the right edge near the camera, another pedestrian with a rolling bag moves along the curb and briefly encroaches into the lane close to the ego vehicle. Farther ahead, a person proceeds slowly with a small handcart in the lane.", "hazard_reasoning": "There is a pedestrian carrying a backpack, wearing a cap and a white shirt, and walking in the middle of the road, away from the ego car, because of the parked vehicle on their left. The driver should slow down to avoid collision with the pedestrian entering the roadway."}
{"id": "train_01942", "split": "train", "clip_key": "2020-0204-103442_079319_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "079319"}, "frames": ["2020-0204-103442_079319_movie_t-3.jpg", "2020-0204-103442_079319_movie_t-2.jpg", "2020-0204-103442_079319_movie_t-1.jpg", "2020-0204-103442_079319_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban residential two-lane road with a solid center line and smooth pavement leads to a signalized intersection, and traffic is light with a short queue in the left-hand ego lane. Ahead in the ego lane, a black sedan is stopped for the red traffic light, holding the ego car. Another car waits in front of it at the intersection, keeping the line stationary. On the right sidewalk by the crosswalk, a pedestrian waits near the curb adjacent to the path the ego car will take. The oncoming lane to the right remains clear, and the overhead signal shows red for the ego direction.", "hazard_reasoning": "There is a black sedan stopped in the ego lane in front of the ego car, because of a red traffic light. The driver should stop to obey the signal and maintain a safe following distance under this scenario."}
{"id": "train_01943", "split": "train", "clip_key": "2020-0129-144857_041250_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "041250"}, "frames": ["2020-0129-144857_041250_movie_t-3.jpg", "2020-0129-144857_041250_movie_t-2.jpg", "2020-0129-144857_041250_movie_t-1.jpg", "2020-0129-144857_041250_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road runs under an elevated structure with a right-side guardrail and smooth pavement, and traffic moves slowly toward a signalized intersection ahead. A black van directly ahead in the ego lane proceeds at low speed and sets the ego vehicle's pace. In the adjacent left lane, a white wagon travels alongside near the ego car, limiting space for a lane change. Farther ahead in the left lane, a compact white car continues straight toward the intersection, remaining slightly ahead of the black van. A larger vehicle stands at the far-left curb near buildings, leaving the through lane clear. Overhead traffic signals are visible ahead, though their aspect is not discernible.", "hazard_reasoning": "There is a black van driving in front of the ego car in the ego lane. In this situation, following the vehicle ahead helps maintain a safe distance and allows the driver to react promptly if the van slows down or stops unexpectedly."}
{"id": "train_01944", "split": "train", "clip_key": "2020-0214-145407_046093_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "046093"}, "frames": ["2020-0214-145407_046093_movie_t-3.jpg", "2020-0214-145407_046093_movie_t-2.jpg", "2020-0214-145407_046093_movie_t-1.jpg", "2020-0214-145407_046093_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light", "environment_perception": "An urban multi-lane intersection with good pavement appears, with same-direction traffic stopped and moderate cross-traffic flowing across. Ahead in the ego lane, a black sedan is stopped at the stop line because the signal for this approach shows red, holding the ego vehicle. To the right, a dark car waits parallel in the adjacent lane at the line, also stationary until the light changes. Across the junction, a silver sedan, a motorbike, and a bicyclist move through from left to right in front of the ego path as cross-traffic proceeds during our red signal.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, because of the red traffic light. The driver must stop at the red light to prevent a collision and comply with the traffic signal."}
{"id": "train_01945", "split": "train", "clip_key": "2020-0210-142719_005402_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "005402"}, "frames": ["2020-0210-142719_005402_movie_t-3.jpg", "2020-0210-142719_005402_movie_t-2.jpg", "2020-0210-142719_005402_movie_t-1.jpg", "2020-0210-142719_005402_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane two-way road runs beneath an elevated railway, with a double solid centerline, guardrails by narrow sidewalks, and smooth pavement; traffic is moderate and slows through the underpass. A white sedan ahead in the left ego lane slows with brake lights because congestion builds under the bridge, constraining the ego vehicle's pace. In the oncoming lane a box truck comes toward the camera at low speed between the columns and the centerline, keeping to its side but tightening the corridor. On the left sidewalk a pedestrian stands by the railing near the corner, waiting and remaining off the roadway. No traffic signals are clearly visible.", "hazard_reasoning": "There is a white sedan in the ego-car lane that is slowing down, because there is traffic congestion ahead. Because the sedan is decelerating due to congestion, the driver should slow down to maintain a safe following distance."}
{"id": "train_01946", "split": "train", "clip_key": "2020-0221-115122_016439_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "016439"}, "frames": ["2020-0221-115122_016439_movie_t-3.jpg", "2020-0221-115122_016439_movie_t-2.jpg", "2020-0221-115122_016439_movie_t-1.jpg", "2020-0221-115122_016439_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under an elevated structure, with three same-direction lanes, dry pavement, and heavy stop-and-go flow. Directly ahead in the ego lane, a white van with a roof rack is stopped or inching forward, holding the ego vehicle because of congestion ahead. To the left, a small flatbed truck sits slightly ahead and crawls along its lane, keeping pace with the queue and blocking an easy merge left. On the right, a dark car runs alongside at low speed, occasionally edging forward, so a rightward lane change is also constrained. Pillars and a guardrail line the right side, and no salient signals or unusual signs are visible.", "hazard_reasoning": "There is a silver truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary vehicle ahead in the congested traffic."}
{"id": "train_01947", "split": "train", "clip_key": "2020-0218-151547_027393_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "027393"}, "frames": ["2020-0218-151547_027393_movie_t-3.jpg", "2020-0218-151547_027393_movie_t-2.jpg", "2020-0218-151547_027393_movie_t-1.jpg", "2020-0218-151547_027393_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane road runs under an elevated expressway, with three same-direction lanes, a right-side guardrail, and smooth pavement; traffic is moderate and begins to move from a stop. A silver car directly ahead in the ego lane starts accelerating as the overhead signal shows green, and the ego follows at its pace. A black sedan slightly ahead in the right adjacent lane proceeds in parallel without merging. A motorcycle ahead near the right lane threads forward between lanes toward the intersection, moving into the gap beside the black sedan and ahead of the ego car. A silver van in the left lane rolls forward in a lane marked for left turns, staying clear of the ego path.", "hazard_reasoning": "There is a silver SUV starting to move in the ego lane because of a green traffic light in front of the ego car. The driver should start moving to maintain safe following distance and keep up with the traffic flow."}
{"id": "train_01948", "split": "train", "clip_key": "titan_clip_1260_000294_movie", "source": {"subset": "titan", "scenario": "clip_1260", "frame": "000294"}, "frames": ["titan_clip_1260_000294_movie_t-3.jpg", "titan_clip_1260_000294_movie_t-2.jpg", "titan_clip_1260_000294_movie_t-1.jpg", "titan_clip_1260_000294_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked vehicle ahead", "environment_perception": "An urban two-way street with one narrow lane per direction and no median is shown; the pavement looks dry and smooth and traffic is light. Ahead on the left, a white van is parked at the curb with its driver exiting, and the vehicle protrudes into the ego lane, narrowing the passage. A pedestrian with an umbrella ahead near the center moves from the right side toward the left, crossing in front of the van and entering the ego lane. Two pedestrians on the near right walk along the sidewalk toward the camera close to the curb but do not step into the roadway.", "hazard_reasoning": "There is a white vehicle parked on the left side of the road, because the driver is exiting the vehicle. The driver exiting the parked vehicle may open the door or step into the roadway unexpectedly, posing a risk to the passing ego-vehicle, so the driver should be aware to anticipate potential obstructions."}
{"id": "train_01949", "split": "train", "clip_key": "2020-0129-105040_066976_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "066976"}, "frames": ["2020-0129-105040_066976_movie_t-3.jpg", "2020-0129-105040_066976_movie_t-2.jpg", "2020-0129-105040_066976_movie_t-1.jpg", "2020-0129-105040_066976_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with one lane each way and a solid center line is shown; the pavement is smooth and traffic is light. A gray van ahead in the ego lane slows as it approaches the pedestrian crossing, constraining our speed. Two cyclists ride farther ahead along the right curb in the opposing lane, continuing away from us and staying out of our path. A man stands on the left sidewalk by the crosswalk, waiting and not entering the roadway.", "hazard_reasoning": "The gray van is slowing down in the ego lane. The driver should slow down to maintain a safe following distance and avoid a potential collision."}
{"id": "train_01950", "split": "train", "clip_key": "2020-0225-102455_024557_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_024557_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_024557_movie_t-3_augB1.jpg", "2020-0225-102455_024557_movie_t-2_augB1.jpg", "2020-0225-102455_024557_movie_t-1_augB1.jpg", "2020-0225-102455_024557_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A busy urban two-way arterial with a painted double-line median and smooth pavement carries heavy, slow-moving traffic. In the ego lane ahead, a silver sedan slows because of congestion further up the road, setting the pace. To the right beyond the median, an oncoming truck followed by a van approaches steadily in their lanes without encroaching. Near the left curb ahead, a small kei van creeps along beside queued pedestrians behind guardrails, staying out of the travel lane. A large 50 speed marking is visible in the oncoming lanes, and overhead guide signs appear farther ahead.", "hazard_reasoning": "There is a silver sedan slowing in the ego lane because of traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and avoid a rear-end collision under sudden speed reductions."}
{"id": "train_01951", "split": "train", "clip_key": "2020-0210-155354_004391_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "004391"}, "frames": ["2020-0210-155354_004391_movie_t-3.jpg", "2020-0210-155354_004391_movie_t-2.jpg", "2020-0210-155354_004391_movie_t-1.jpg", "2020-0210-155354_004391_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street runs under a railway overpass, with one lane each direction, no median, and smooth pavement; traffic in the ego direction is slow and queued. A white SUV ahead in the ego lane remains stopped for a red traffic light, holding the ego vehicle. A black van stands at the left curb just ahead beside orange cones, narrowing the lane. An oncoming cyclist travels toward the camera along the right curb in the opposing lane but stays clear of the ego path. Pedestrians gather on both sidewalks near the intersection, waiting at the corners and likely to enter the crossing when the signal changes. Cones and temporary barriers mark roadside work zones on both sides, though the through lane stays open.", "hazard_reasoning": "There is a white SUV stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to maintain a safe following distance and obey the traffic signal."}
{"id": "train_01952", "split": "train", "clip_key": "2020-0207-101955_079154_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "079154"}, "frames": ["2020-0207-101955_079154_movie_t-3.jpg", "2020-0207-101955_079154_movie_t-2.jpg", "2020-0207-101955_079154_movie_t-1.jpg", "2020-0207-101955_079154_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated road with two lanes in the same direction runs between guardrails, the pavement smooth with a visible expansion joint, and overall traffic is light. A blue pickup-style work truck directly ahead in the ego lane slows, constraining the ego car's pace. Farther ahead in the right lane, a white box truck continues steadily and creates no immediate conflict. Roadside warning signs and streetlights line the viaduct, with no traffic signals in view.", "hazard_reasoning": "There is a blue pick-up truck slowing in front of the ego car, in the ego lane. The blue pick-up is decelerating directly ahead, so the driver should slow down to maintain a safe distance."}
{"id": "train_01953", "split": "train", "clip_key": "2020-0227-104226_054112_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054112"}, "frames": ["2020-0227-104226_054112_movie_t-3.jpg", "2020-0227-104226_054112_movie_t-2.jpg", "2020-0227-104226_054112_movie_t-1.jpg", "2020-0227-104226_054112_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane per direction and a solid orange centerline runs past low-rise buildings; pavement looks smooth and traffic is light to moderate near a signalized intersection. A silver van is stopped directly ahead in the ego lane because the traffic light is red, holding the ego vehicle at the crosswalk. Oncoming cars approach from the far side and proceed through the junction in their lane, briefly occupying the intersection. A pedestrian stands on the right sidewalk near the corner by the crosswalk, waiting. A dark SUV is parked tightly along the left curb beside the ego vehicle, narrowing the lane at the stop.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because of a red traffic light. You need to stop to avoid colliding with the stationary van at the red light under this situation."}
{"id": "train_01954", "split": "train", "clip_key": "2020-0213-143552_015108_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "015108"}, "frames": ["2020-0213-143552_015108_movie_t-3.jpg", "2020-0213-143552_015108_movie_t-2.jpg", "2020-0213-143552_015108_movie_t-1.jpg", "2020-0213-143552_015108_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes shows smooth pavement and moderate flow, with a marked bus-only lane on the far left; traffic ahead compresses slightly. A white van directly ahead in the ego lane slows and comes to a stop because of congestion ahead, temporarily blocking our path. To the left, a small flatbed truck continues straight at a low, steady speed beside the van, limiting an immediate merge into that lane. In the right lane, a white compact car travels ahead at a similar speed and maintains its lane, remaining another vehicle to account for before changing lanes.", "hazard_reasoning": "There is a white van stopped in the ego lane because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary van and to respond to the congestion situation."}
{"id": "train_01955", "split": "train", "clip_key": "2020-0204-103442_020875_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "020875"}, "frames": ["2020-0204-103442_020875_movie_t-3.jpg", "2020-0204-103442_020875_movie_t-2.jpg", "2020-0204-103442_020875_movie_t-1.jpg", "2020-0204-103442_020875_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road runs beneath an elevated expressway, with smooth pavement and a concrete barrier on the right; traffic moves slowly. A white SUV directly ahead in the ego lane slowly accelerates and controls the ego car's pace. A silver van slightly ahead to the left proceeds in the adjacent lane at a similar low speed, parallel to the ego vehicle. Blue overhead directional signs are visible for upcoming routes, and a hatched taper marks the roadway near the SUV. No pedestrians or cyclists enter the roadway, and no oncoming traffic is visible due to the barrier and viaduct structure.", "hazard_reasoning": "There is a white SUV slowly accelerating in front of the ego car, in the ego lane. You should start moving to maintain a safe following distance as the lead vehicle increases speed."}
{"id": "train_01956", "split": "train", "clip_key": "2020-0210-142719_002070_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-142719_002070_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-142719_002070_movie_t-3_augB1.jpg", "2020-0210-142719_002070_movie_t-2_augB1.jpg", "2020-0210-142719_002070_movie_t-1_augB1.jpg", "2020-0210-142719_002070_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be cautious of cyclist ahead", "environment_perception": "An urban commercial street with shops lines both sides; it is a two-way road with one lane per direction, no median, and dry, smooth pavement, and traffic is moderate. Ahead in the ego lane, a cyclist wearing a black jacket rides away near the middle of the roadway, occupying the lane and likely constraining the pace. In the oncoming lane to the right, a white minivan approaches at a steady speed and continues through. A dark SUV ahead near the left curb in the same direction moves slowly or waits, narrowing the usable lane as additional curbside vehicles further ahead reduce clearance.", "hazard_reasoning": "There is a cyclist wearing a black jacket, cycling in the middle of the road, away from the ego car. The cyclist's central position could obstruct the vehicle's path, so the driver should be cautious to maintain a safe distance."}
{"id": "train_01957", "split": "train", "clip_key": "2020-0205-152530_028447_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "028447"}, "frames": ["2020-0205-152530_028447_movie_t-3.jpg", "2020-0205-152530_028447_movie_t-2.jpg", "2020-0205-152530_028447_movie_t-1.jpg", "2020-0205-152530_028447_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial runs under an elevated structure with three same-direction lanes, the rightmost marked for right turn; the pavement is smooth and traffic is heavy and queued at a signal. A gray minivan directly ahead in the ego lane is stopped for a red light, holding the ego car in the queue. To the left, a red hatchback creeps forward alongside in the adjacent through lane and may edge ahead of the ego vehicle. Farther ahead in the left lanes, several cars inch toward the intersection, maintaining the queue. The signal ahead shows red, and a curb with railing separates the roadway from the sidewalk.", "hazard_reasoning": "There is a gray minivan stopped in the ego lane, because of the red traffic light, in front of the ego car. The minivan is stopped at the red light ahead, so the driver should stop to avoid a rear-end collision."}
{"id": "train_01958", "split": "train", "clip_key": "2020-0207-151349_077801_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "077801"}, "frames": ["2020-0207-151349_077801_movie_t-3.jpg", "2020-0207-151349_077801_movie_t-2.jpg", "2020-0207-151349_077801_movie_t-1.jpg", "2020-0207-151349_077801_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated structure with a right-side guardrail; the pavement is dry and traffic is moderate and slow-moving. A brown truck ahead in the ego lane slows, constraining the ego car's pace. Slightly ahead in the adjacent left lane, a white van also slows in parallel, limiting an easy lane change. A dark sedan to the left-front edges forward in its lane, passing the truck while remaining close to the ego vehicle.", "hazard_reasoning": "There is a brown truck slowing in the ego lane, in front of the ego car. Slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_01959", "split": "train", "clip_key": "2020-0227-104226_086907_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "086907"}, "frames": ["2020-0227-104226_086907_movie_t-3.jpg", "2020-0227-104226_086907_movie_t-2.jpg", "2020-0227-104226_086907_movie_t-1.jpg", "2020-0227-104226_086907_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban arterial with three same-direction lanes has smooth pavement, solid lane lines and a hatched buffer to the right, and traffic is heavy and mostly stopped. A red SUV is directly ahead in the ego lane and is stopped due to congestion, holding the ego vehicle. Farther ahead in the same path a white box truck waits in the queue and compresses the flow. To the right, a large concrete mixer truck creeps alongside within the buffered lane close to the lane line, limiting lateral space next to the ego. In the left lane several vans and cars crawl forward in the jam without usable gaps.", "hazard_reasoning": "There is a red SUV that has stopped in the ego lane due to traffic congestion ahead, in front of the ego car. The sudden stop of the vehicle ahead requires the driver to Stop immediately to avoid a rear-end collision."}
{"id": "train_01960", "split": "train", "clip_key": "titan_clip_1323_000060_movie", "source": {"subset": "titan", "scenario": "clip_1323", "frame": "000060"}, "frames": ["titan_clip_1323_000060_movie_t-3.jpg", "titan_clip_1323_000060_movie_t-2.jpg", "titan_clip_1323_000060_movie_t-1.jpg", "titan_clip_1323_000060_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban work zone on a narrow two-way road channels the ego vehicle through a single left-hand lane between metal fences and cones, over patched pavement, with light traffic and no visible oncoming flow. Ahead in the same lane, a white box truck creeps near the barriers around a gentle left curve, constraining the pace. On the left edge, a man in a white T-shirt and brown pants carrying a backpack walks along the roadway because there is no sidewalk, staying close to the fence and near the ego path. Another pedestrian is on the right margin by the site wall, moving slowly forward. Chevron barricades and a blue straight-ahead sign mark the construction corridor.", "hazard_reasoning": "There is a man, wearing a white t-shirt and brown pants, carrying a backpack, walking, on the left side of the road, because there is no sidewalk. The driver should slow down because the pedestrian is walking on the roadway and may require evasive action."}
{"id": "train_01961", "split": "train", "clip_key": "2020-0212-102546_073812_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "073812"}, "frames": ["2020-0212-102546_073812_movie_t-3.jpg", "2020-0212-102546_073812_movie_t-2.jpg", "2020-0212-102546_073812_movie_t-1.jpg", "2020-0212-102546_073812_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be cautious of traffic cone", "environment_perception": "An urban divided road with two lanes in the ego direction runs past apartment blocks, separated from oncoming traffic by a low hedge median; the pavement is smooth and traffic is light. A large construction vehicle travels slowly ahead in the ego lane, constraining the pace. In the adjacent left lane farther ahead, a maintenance truck and workers are near the curb, and an orange traffic cone stands in the left lane, narrowing that lane and potentially prompting merges toward the ego lane. On the far side beyond the median, an oncoming white car passes right to left without interacting.", "hazard_reasoning": "There is an orange traffic cone in the left lane. The cone may obstruct the lane and require steering adjustments, so the driver should be cautious."}
{"id": "train_01962", "split": "train", "clip_key": "titan_clip_1296_000480_movie", "source": {"subset": "titan", "scenario": "clip_1296", "frame": "000480"}, "frames": ["titan_clip_1296_000480_movie_t-3.jpg", "titan_clip_1296_000480_movie_t-2.jpg", "titan_clip_1296_000480_movie_t-1.jpg", "titan_clip_1296_000480_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road curves right past a large construction site behind blue fencing, with a solid double yellow centerline and smooth pavement; traffic appears light. A small box truck ahead in the ego lane continues through the bend, modestly setting the pace. Along the oncoming lane to the right, a line of stationary cars is parked at the curb, narrowing that side but remaining outside the ego path. Several pedestrians walk on the left sidewalk beside the construction fence near a crosswalk, separated from the roadway by a guardrail and not approaching the lane. No traffic signals are visible, and there are no obstacles in the ego lane.", "hazard_reasoning": "There is no evident hazard in the scene, as traffic is flowing normally and visibility is clear. Drivers can maintain their current speed and proceed without additional caution."}
{"id": "train_01963", "split": "train", "clip_key": "titan_clip_1042_000048_movie", "source": {"subset": "titan", "scenario": "clip_1042", "frame": "000048"}, "frames": ["titan_clip_1042_000048_movie_t-3.jpg", "titan_clip_1042_000048_movie_t-2.jpg", "titan_clip_1042_000048_movie_t-1.jpg", "titan_clip_1042_000048_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the obstruction", "environment_perception": "An urban two-way street runs between tall buildings with smooth pavement and light traffic, and there is no marked centerline. A white van is parked on the left in the ego lane near a storefront, encroaching into the lane and constraining the ego vehicle's path. A silver sedan is parked along the right curb in the oncoming lane farther ahead, further narrowing the corridor. A small car ahead near mid-block proceeds straight away from the ego vehicle without affecting its path. Boxes stacked by the left shop and a bicycle by a pole sit off the roadway.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane. The parked van partially obstructs the ego lane, requiring the driver to carefully manoeuvre to avoid a collision."}
{"id": "train_01964", "split": "train", "clip_key": "2020-0203-154554_050477_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "050477"}, "frames": ["2020-0203-154554_050477_movie_t-3.jpg", "2020-0203-154554_050477_movie_t-2.jpg", "2020-0203-154554_050477_movie_t-1.jpg", "2020-0203-154554_050477_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane same-direction road runs under an elevated expressway, the pavement dry as traffic queues at an intersection. A gray sedan directly ahead in the ego lane is stopped for the red light and blocks the path. Farther ahead in the same lane, a small box truck waits near the stop line, maintaining the queue. In the adjacent right lane, a dark van and a light truck are also halted slightly ahead, keeping pace with the line and preventing an easy lane change. Overhead traffic signals display red, and a guarded sidewalk with parked service vehicles sits to the left, separated by a railing.", "hazard_reasoning": "There is a gray sedan stopped in the ego lane because of a red traffic light ahead. You must stop to avoid colliding with the stationary vehicle at the red light."}
{"id": "train_01965", "split": "train", "clip_key": "2020-0205-103411_013862_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "013862"}, "frames": ["2020-0205-103411_013862_movie_t-3.jpg", "2020-0205-103411_013862_movie_t-2.jpg", "2020-0205-103411_013862_movie_t-1.jpg", "2020-0205-103411_013862_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Be cautious of cyclist on left side", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection, divided by a central median; the dry pavement is in good condition and traffic is moderate, with queues forming ahead while oncoming flow moves on the far side of the median. Several cars ahead in the ego lane and the adjacent lane slow toward the stop line, setting the ego vehicle's pace. At the left curb by the near crosswalk, a cyclist in a red jacket waits to cross the street and could enter the ego lane when permitted. A small group of pedestrians gathers at the same left corner, waiting to cross in front of the ego path. Overhead signals span the junction.", "hazard_reasoning": "There is a cyclist wearing a red jacket at the left side of the road, waiting to cross the street. The cyclist may enter the roadway unexpectedly, so the driver should be cautious under this situation to avoid a collision."}
{"id": "train_01966", "split": "train", "clip_key": "2020-0131-135401_008606_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008606"}, "frames": ["2020-0131-135401_008606_movie_t-3.jpg", "2020-0131-135401_008606_movie_t-2.jpg", "2020-0131-135401_008606_movie_t-1.jpg", "2020-0131-135401_008606_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction runs between shops and apartments; the surface is smooth but strong sun glare from the upper right washes the scene, and traffic is light with no oncoming vehicles visible. A white box truck ahead in the ego lane drives away steadily, setting the ego car's pace. A silver hatchback is parked tight along the left curb near the camera, slightly narrowing the usable edge as the ego passes. A person walks along the fenced sidewalk on the right, moving parallel to traffic and not approaching the roadway. A blue P parking sign is visible on the left storefront.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01967", "split": "train", "clip_key": "titan_clip_318_000486_movie", "source": {"subset": "titan", "scenario": "clip_318", "frame": "000486"}, "frames": ["titan_clip_318_000486_movie_t-3.jpg", "titan_clip_318_000486_movie_t-2.jpg", "titan_clip_318_000486_movie_t-1.jpg", "titan_clip_318_000486_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre around cyclist", "environment_perception": "A narrow urban two-way street with single lanes and no median runs between shops and a hotel; the pavement is smooth and traffic is light at a slow pace. A silver minivan ahead in the ego lane travels slowly near the centerline, constraining the ego vehicle's speed. A cyclist wearing a black T-shirt and black pants rides toward the ego car along the left side of the road, approaching near the center and potentially encroaching into the ego lane. A pedestrian on the left sidewalk walks along the storefronts near the curb but remains off the roadway. No traffic signals or speed limit signs are clearly visible.", "hazard_reasoning": "There is a cyclist wearing a black t-shirt and black pants riding on the left side of the road, towards the ego car. The cyclist's position and direction risk a potential collision if the driver does not adjust course, so the driver should manoeuvre around the cyclist to maintain safety."}
{"id": "train_01968", "split": "train", "clip_key": "2020-0203-154554_033693_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "033693"}, "frames": ["2020-0203-154554_033693_movie_t-3.jpg", "2020-0203-154554_033693_movie_t-2.jpg", "2020-0203-154554_033693_movie_t-1.jpg", "2020-0203-154554_033693_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane roadway runs under an elevated structure, with smooth asphalt and a right-side guardrail; traffic is moderate and slow. A white coach bus ahead in the ego lane slows because congestion builds further upstream, directly setting the ego vehicle's pace. A small flatbed kei truck travels ahead-right in the adjacent lane at a similar slow speed, holding position beside the bus and offering no clear gap. A compact white car to the left edges forward alongside the ego vehicle, limiting a leftward lane change. A sign on the right shows a 50 speed limit.", "hazard_reasoning": "There is a white bus slowing down in the ego lane because of traffic congestion ahead. The driver should slow down to maintain a safe distance as vehicles ahead are decelerating."}
{"id": "train_01969", "split": "train", "clip_key": "2020-0213-143552_016032_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "016032"}, "frames": ["2020-0213-143552_016032_movie_t-3.jpg", "2020-0213-143552_016032_movie_t-2.jpg", "2020-0213-143552_016032_movie_t-1.jpg", "2020-0213-143552_016032_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban arterial with two lanes per direction and no physical median shows smooth pavement and moderate flow that briefly slows near a signalized intersection. A white vehicle ahead in the ego lane slows because congestion forms beyond the intersection, constraining the ego car's pace. In the opposite direction, a white minivan approaches in its lane and continues straight without encroaching on the center line. On the left curb just past the crosswalk, a small white truck stands parked in the shoulder, reducing clearance at the lane edge. The overhead traffic signal is green as traffic proceeds.", "hazard_reasoning": "There is a white SUV slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe gap and avoid collision due to the slowing vehicle ahead."}
{"id": "train_01970", "split": "train", "clip_key": "titan_clip_1273_000132_movie", "source": {"subset": "titan", "scenario": "clip_1273", "frame": "000132"}, "frames": ["titan_clip_1273_000132_movie_t-3.jpg", "titan_clip_1273_000132_movie_t-2.jpg", "titan_clip_1273_000132_movie_t-1.jpg", "titan_clip_1273_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban back street with a single undivided lane and worn asphalt runs between low buildings, with no centerline or median; traffic is very light with no vehicles in view. On the left side near the curb, a man wearing a black T-shirt and black pants and carrying a backpack walks away from the ego vehicle along the roadway, potentially entering the travel path. At the right edge in the foreground, a pedestrian holding a small bag walks away along the gutter, close to the lane and reducing available space. Farther ahead on the right, another person stands by a storefront using a phone, stationary at the curb and not moving into the lane. A blue parking sign appears ahead, and a few orange cones guard a doorway on the left.", "hazard_reasoning": "There is a man wearing a black t-shirt, black pants, and carrying a backpack, walking at the left side of the road, away from the ego car. The pedestrian is in the vehicle's path and could change direction, so the driver should carefully manoeuvre around the pedestrian."}
{"id": "train_01971", "split": "train", "clip_key": "titan_clip_892_000348_movie", "source": {"subset": "titan", "scenario": "clip_892", "frame": "000348"}, "frames": ["titan_clip_892_000348_movie_t-3.jpg", "titan_clip_892_000348_movie_t-2.jpg", "titan_clip_892_000348_movie_t-1.jpg", "titan_clip_892_000348_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "In an urban setting, the ego vehicle proceeds along a narrow two-way street with one lane each way and no median, curving slightly right; the dry pavement is patchy and traffic is light. A cyclist emerges from the left side street by the convenience store and turns into the ego lane ahead, then rides along the left edge, potentially constraining the ego vehicle's pace. A beige car at that side street noses out from the left but waits at the corner, yielding to through traffic. Farther ahead in the same direction, a motorbike travels away near the center of the lane. A pedestrian wearing a yellow vest stands on the left beside the barricaded construction area. A no-entry sign marks the left side street, and a roadside convex mirror is visible on the right.", "hazard_reasoning": "There is a pedestrian wearing a yellow vest, standing on the left side of the road, because of the construction work on the left. The driver should carefully manoeuvre around the pedestrian to avoid collision and safely navigate the construction zone."}
{"id": "train_01972", "split": "train", "clip_key": "2020-0129-144857_041728_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "041728"}, "frames": ["2020-0129-144857_041728_movie_t-3.jpg", "2020-0129-144857_041728_movie_t-2.jpg", "2020-0129-144857_041728_movie_t-1.jpg", "2020-0129-144857_041728_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated structure with smooth pavement, a right-side guardrail, and heavy, slow-moving same-direction traffic. A black van directly ahead in the ego lane slows and bunches up because of congestion, constraining the ego car's pace. To the left, a white wagon proceeds slowly in the adjacent lane roughly alongside the ego vehicle, keeping pace with the queue. Farther left, a covered truck creeps forward with the flow, remaining in its lane and not affecting the ego path. A 40 speed-limit sign is posted on the right, and construction fencing tightens the right shoulder but does not intrude into the lane.", "hazard_reasoning": "There's a black van slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The van's reduced speed indicates congested traffic that requires you to lower speed to maintain a safe distance."}
{"id": "train_01973", "split": "train", "clip_key": "titan_clip_111_000018_movie", "source": {"subset": "titan", "scenario": "clip_111", "frame": "000018"}, "frames": ["titan_clip_111_000018_movie_t-3.jpg", "titan_clip_111_000018_movie_t-2.jpg", "titan_clip_111_000018_movie_t-1.jpg", "titan_clip_111_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban back street with a narrow single-lane roadway, no median, and smooth pavement runs between buildings toward a small intersection; traffic is light. On the left edge near the ego vehicle, a pedestrian wearing a cap and white T-shirt walks away along the curb, close to the lane and potentially influencing the vehicle's pace. Ahead at the junction, a silver car moves slowly across from right to left on the cross street, passing in front of the alley's exit and momentarily occupying the space. A white van is stopped on the right near the intersection, narrowing the approach and partly blocking the view of cross traffic.", "hazard_reasoning": "There is a pedestrian wearing cap and white t-shirt walking away from the ego car on the left side of the road. The pedestrian is walking along the roadway with no clear separation, increasing collision risk if the vehicle maintains its speed, so the driver should slow down to ensure safety."}
{"id": "train_01974", "split": "train", "clip_key": "titan_clip_250_000054_movie", "source": {"subset": "titan", "scenario": "clip_250", "frame": "000054"}, "frames": ["titan_clip_250_000054_movie_t-3.jpg", "titan_clip_250_000054_movie_t-2.jpg", "titan_clip_250_000054_movie_t-1.jpg", "titan_clip_250_000054_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian pushing stroller", "environment_perception": "A narrow urban street with low-rise buildings forms a single undivided carriageway with smooth pavement and light traffic, and bright sun ahead creates noticeable glare. On the left edge just ahead, a pedestrian wearing a checkered shirt pushes a stroller along the shoulder in the same direction, moving steadily near the lane and constraining the vehicle's approach. Farther ahead near the center of the roadway, another person walks away along the lane, occupying the ego path and further dictating a cautious pace. A red van stands parked at the right curb, locally narrowing the passage, and several bicycles are parked along the left sidewalk close to the curb.", "hazard_reasoning": "There is a pedestrian walking on the left side of the road, wearing a checkered shirt and pushing a stroller. The driver should be cautious because the pedestrian may step into the travel lane unexpectedly, posing a risk of collision."}
{"id": "train_01975", "split": "train", "clip_key": "2020-0220-102630_094484_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "094484"}, "frames": ["2020-0220-102630_094484_movie_t-3.jpg", "2020-0220-102630_094484_movie_t-2.jpg", "2020-0220-102630_094484_movie_t-1.jpg", "2020-0220-102630_094484_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the merging motorcycle", "environment_perception": "An urban multi-lane arterial runs straight beneath a pedestrian footbridge, with a right-side guardrail and hatched shoulder; the pavement is dry and traffic moves at a moderate, steady pace. Ahead, a black motorcycle in the adjacent left lane cuts right into the ego lane and slots in front of the car, momentarily encroaching on its headway. Farther ahead in the same lane, a white van continues straight at a steady speed, loosely setting the pace. In the left lane, a small car travels parallel and maintains its lane.", "hazard_reasoning": "There is a black motorcycle in front of the ego car, cutting into the ego lane from the left lane. The motorcycle's unexpected lane change into your path could cause a collision, so be aware and adjust speed or position accordingly."}
{"id": "train_01976", "split": "train", "clip_key": "titan_clip_804_000228_movie", "source": {"subset": "titan", "scenario": "clip_804", "frame": "000228"}, "frames": ["titan_clip_804_000228_movie_t-3.jpg", "titan_clip_804_000228_movie_t-2.jpg", "titan_clip_804_000228_movie_t-1.jpg", "titan_clip_804_000228_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban street with a single traffic lane and a painted bicycle lane on the left runs straight with no median; the pavement is sound and traffic is light. A white truck is parked ahead along the left curb as it is being unloaded, occupying the bike lane and slightly encroaching into the lane, narrowing the ego vehicle's path. A large black motorcycle with a rider waits near the right edge by the crosswalk, poised to move off and potentially enter the ego lane. A person stands at the rear of the parked truck on the left attending to the unloading, close to the roadway. A 30 zone speed marking is visible on the pavement.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. The parked truck partially obstructs the driving path, so the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_01977", "split": "train", "clip_key": "2020-0225-145150_023564_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "023564"}, "frames": ["2020-0225-145150_023564_movie_t-3.jpg", "2020-0225-145150_023564_movie_t-2.jpg", "2020-0225-145150_023564_movie_t-1.jpg", "2020-0225-145150_023564_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban sunken two-way road with high concrete walls has one lane in each direction divided by double orange lines; the asphalt is dry and smooth and traffic is light, with the oncoming lane empty. Ahead in the ego lane, a van with roof boxes travels steadily and gradually pulls farther away from the camera, effectively setting the ego vehicle's pace.", "hazard_reasoning": "There is a gold van driving in the ego lane, away from the ego car. The van ahead may decelerate suddenly, so you should follow the vehicle ahead to maintain a safe distance and ensure sufficient reaction time."}
{"id": "train_01978", "split": "train", "clip_key": "2020-0226-140503_089670_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "089670"}, "frames": ["2020-0226-140503_089670_movie_t-3.jpg", "2020-0226-140503_089670_movie_t-2.jpg", "2020-0226-140503_089670_movie_t-1.jpg", "2020-0226-140503_089670_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "An urban two-way street with one lane in each direction runs between mid-rise buildings, divided by a single yellow centerline; the pavement is dry and traffic is light. Parked cars line the left curb and white railings edge the sidewalks. Ahead in the ego lane on the left, a white van is parked in the travel lane, blocking part of the ego path. In the opposing lane, a white sedan approaches at a steady city speed, its presence constraining any maneuver around the parked van. A second oncoming light-colored vehicle follows behind the sedan at a short distance, further reducing the available gap.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane. The van occupies the driving lane and may force the driver to steer around it to avoid collision, so careful manoeuvring is required under this situation."}
{"id": "train_01979", "split": "train", "clip_key": "titan_clip_1017_000192_movie", "source": {"subset": "titan", "scenario": "clip_1017", "frame": "000192"}, "frames": ["titan_clip_1017_000192_movie_t-3.jpg", "titan_clip_1017_000192_movie_t-2.jpg", "titan_clip_1017_000192_movie_t-1.jpg", "titan_clip_1017_000192_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "A narrow urban street with tall buildings and no marked centerline runs straight ahead; the pavement is worn and patched, and traffic is light. Ahead on the left, a pedestrian wearing a black T-shirt walks away from the ego vehicle along the roadway edge, occupying part of the lane and potentially constraining progress. Near the middle distance, a silver car approaches slowly from the opposite direction as it threads past the pedestrian, leaving limited space between them and the ego path. On the right sidewalk farther ahead, another person stands near a shopfront, remaining off the carriageway. Planters and some parked vehicles line both sides, creating a tight corridor.", "hazard_reasoning": "There is a pedestrian wearing a black T-shirt and walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_01980", "split": "train", "clip_key": "titan_clip_566_000138_movie", "source": {"subset": "titan", "scenario": "clip_566", "frame": "000138"}, "frames": ["titan_clip_566_000138_movie_t-3.jpg", "titan_clip_566_000138_movie_t-2.jpg", "titan_clip_566_000138_movie_t-1.jpg", "titan_clip_566_000138_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban boutique-lined alley with a single narrow, unmarked lane curves gently left on smooth brick paving, with no median; no other vehicles are present and sight lines are short around the bend. Ahead on the right, a woman in a yellow dress walks toward the ego vehicle in the roadway because there is no sidewalk, potentially occupying the vehicle's path. Near the right edge closer to the camera, two pedestrians, one holding an umbrella, walk toward the ego along the curb and partly in the lane, further constricting the passage. Farther ahead near the left side, another pedestrian walks away along the curve within the carriageway, keeping to the edge. A shop signboard and trash bins protrude at the margins.", "hazard_reasoning": "There is a woman wearing a yellow dress and walking on the right side of the road, toward the ego car, because there is no sidewalk. This places her directly in the vehicle's path, increasing collision risk, so the driver should slow down to avoid hitting her."}
{"id": "train_01981", "split": "train", "clip_key": "2020-0131-135401_088267_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "088267"}, "frames": ["2020-0131-135401_088267_movie_t-3.jpg", "2020-0131-135401_088267_movie_t-2.jpg", "2020-0131-135401_088267_movie_t-1.jpg", "2020-0131-135401_088267_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene unfolds on a two-lane same-direction road bordered by a right-side guardrail; the pavement is dry and traffic is moderate with vehicles bunching slightly ahead. A white van directly ahead in the ego lane speeds up briefly and then continues straight as it nears slower vehicles, effectively setting the ego vehicle's pace, consistent with the note that it is speeding up despite congestion ahead. A gray compact car in the lane to the left runs parallel slightly ahead, maintaining course and limiting a potential lane change. On the far right, a bicyclist rides along a separated path behind the guardrail, moving parallel and not entering the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01982", "split": "train", "clip_key": "2020-0221-115122_023857_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "023857"}, "frames": ["2020-0221-115122_023857_movie_t-3.jpg", "2020-0221-115122_023857_movie_t-2.jpg", "2020-0221-115122_023857_movie_t-1.jpg", "2020-0221-115122_023857_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of cyclist on left", "environment_perception": "An urban street runs beneath an elevated expressway, with two lanes in the same direction, intact dry pavement, and light to moderate traffic flowing smoothly. A white kei car travels ahead in the ego lane at a steady pace, effectively setting the ego vehicle's speed. To the right, a white van in the adjacent lane moves slightly faster and continues parallel without merging. On the far left near the curb, a cyclist wearing a purple coat rides away from the ego car along the edge of the roadway as the vehicle approaches to pass. Overhead blue directional signs and a pedestrian footbridge are visible ahead.", "hazard_reasoning": "There is a cyclist wearing a purple coat, cycling on the left side of the road, away from the ego car. The cyclist might veer into the traffic lane or change direction unexpectedly, so the driver should stay vigilant and adjust speed to maintain a safe distance."}
{"id": "train_01983", "split": "train", "clip_key": "titan_clip_1274_000222_movie", "source": {"subset": "titan", "scenario": "clip_1274", "frame": "000222"}, "frames": ["titan_clip_1274_000222_movie_t-3.jpg", "titan_clip_1274_000222_movie_t-2.jpg", "titan_clip_1274_000222_movie_t-1.jpg", "titan_clip_1274_000222_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "manoeuvre carefully", "environment_perception": "A narrow urban two-way street with no divider runs between low-rise buildings; the pavement is dry and intact, and traffic is light with only parked vehicles along both sides. A pedestrian in a white shirt is on the right side of the road walking toward the ego-vehicle because a parked vehicle occupies the curb, so he keeps to the edge and reduces the available lane width. Farther ahead, another person walks away along the left edge, remaining near the buildings and posing little interaction. A small silver van stands stopped at the right curb near mid-block while other cars are parked along the left, creating a constricted corridor. No signals or speed signs are visible, and there are no moving vehicles besides the ego.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking on the right side of the road, towards the ego-car, because of the parked vehicle. The pedestrian may unexpectedly enter the vehicle's path due to the obstructed sidewalk, so the driver should manoeuvre carefully."}
{"id": "train_01984", "split": "train", "clip_key": "2020-0203-114632_071768_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "071768"}, "frames": ["2020-0203-114632_071768_movie_t-3.jpg", "2020-0203-114632_071768_movie_t-2.jpg", "2020-0203-114632_071768_movie_t-1.jpg", "2020-0203-114632_071768_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated roadway with two same-direction lanes curves gently right, bordered by a sound barrier on the left and a guardrail on the right; the pavement looks worn but clear and traffic is moderate with several trucks ahead. A gray van directly ahead in the left lane accelerates away from the ego car, opening a small gap. A large construction truck slightly ahead in the adjacent right lane continues straight at a steady pace alongside without moving toward the ego lane. Farther ahead in the right lane, a line of trucks travels steadily and appears to set the downstream flow. Chevron signs on the left wall mark the approaching right-hand bend.", "hazard_reasoning": "A gray van accelerating in front of the ego car. The van's sudden acceleration may lead to rapid changes in distance ahead, so the driver should maintain pace and follow the vehicle to ensure a safe following distance."}
{"id": "train_01985", "split": "train", "clip_key": "2020-0214-145407_008384_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "008384"}, "frames": ["2020-0214-145407_008384_movie_t-3.jpg", "2020-0214-145407_008384_movie_t-2.jpg", "2020-0214-145407_008384_movie_t-1.jpg", "2020-0214-145407_008384_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs beneath elevated ramps toward a signalized intersection, with three same-direction lanes and no physical median visible, marked clearly on smooth dry pavement. Traffic is heavy but begins to roll as the light ahead shows green. A white van directly ahead in the ego lane accelerates from a stop as the signal turns green, setting the pace for the ego vehicle. To the left, a silver tall kei van moves forward slowly alongside in its lane, staying close to the ego car and limiting lateral space. To the right, a white wagon proceeds slowly in the adjacent lane slightly offset ahead, keeping position and preventing an easy merge. The green traffic signal over the intersection is clearly visible.", "hazard_reasoning": "There is a white van in the ego-car lane that has started to accelerate, from a stopped position, because the traffic light has turned green. The white van will move forward into the driver's path, so the driver should start moving promptly to maintain safe headway."}
{"id": "train_01986", "split": "train", "clip_key": "2020-0226-140503_056125_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "056125"}, "frames": ["2020-0226-140503_056125_movie_t-3.jpg", "2020-0226-140503_056125_movie_t-2.jpg", "2020-0226-140503_056125_movie_t-1.jpg", "2020-0226-140503_056125_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane intersection with smooth pavement sits beneath an overhead pedestrian footbridge; the ego car approaches from a single lane with no center median, and traffic flow is moderate as vehicles pass laterally through the junction. On the left foreground, a cyclist rides away from the ego car across the zebra crosswalk, crossing ahead of the vehicle. Ahead in the middle distance, several cars and white vans move right to left as cross traffic, briefly occupying the space the ego car would enter. On the far right, a blue truck waits near the curb beside a landscaped island. Standard traffic signals and roadside direction signs are visible at the intersection.", "hazard_reasoning": "There is a cyclist crossing the pedestrian crosswalk, heading away from the ego car. The cyclist may enter the ego-vehicle's path if not given sufficient space, so the driver should slow down to maintain a safe distance."}
{"id": "train_01987", "split": "train", "clip_key": "2020-0204-150838_071071_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "071071"}, "frames": ["2020-0204-150838_071071_movie_t-3.jpg", "2020-0204-150838_071071_movie_t-2.jpg", "2020-0204-150838_071071_movie_t-1.jpg", "2020-0204-150838_071071_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with three same-direction lanes has smooth asphalt, a left guardrail, and a concrete barrier on the right separating parallel lanes; traffic is moderate and flowing. Directly ahead, a red container truck travels in the ego lane at a steady pace, and the ego follows because traffic ahead is moving. In the left lane just ahead, a white box truck cruises alongside, slightly constraining any leftward pass. On the parallel lanes to the right beyond the barrier, several cars and a motorcycle proceed in the same direction and remain segregated from the ego path. Overhead green direction signs with arrows mark through and rightward routes, suggesting an imminent split.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_01988", "split": "train", "clip_key": "2020-0205-103411_087681_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "087681"}, "frames": ["2020-0205-103411_087681_movie_t-3.jpg", "2020-0205-103411_087681_movie_t-2.jpg", "2020-0205-103411_087681_movie_t-1.jpg", "2020-0205-103411_087681_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth asphalt and only painted centerlines carries slow, heavy traffic in clear daylight. The ego car proceeds in the left-side lanes of a two-way road while opposing flow moves on the right. Directly ahead, a white compact hatchback is stopped in the ego lane because of congestion and blocks the path. Farther ahead in the same lane, a large flatbed truck queues and inches forward, further constraining pace. To the left alongside, a silver wagon in the adjacent lane creeps ahead parallel and may merge into the ego lane near the stopped car. In the opposite lanes to the right, a white van travels toward the camera with steady oncoming flow.", "hazard_reasoning": "There is a white compact hatchback stopped in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should stop to maintain a safe distance and avoid collision with the halted vehicle ahead."}
{"id": "train_01989", "split": "train", "clip_key": "2020-0131-135401_003056_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003056"}, "frames": ["2020-0131-135401_003056_movie_t-3.jpg", "2020-0131-135401_003056_movie_t-2.jpg", "2020-0131-135401_003056_movie_t-1.jpg", "2020-0131-135401_003056_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow two-way urban street with left-side traffic and no median runs between mid-rise buildings, the pavement smooth and traffic light. A white box truck ahead in the ego lane pulls away from the camera at a modest pace, effectively setting the ego car's speed. Farther ahead in the same direction, a motorcyclist continues straight and moves away without affecting the ego lane. On the left sidewalk near a side street, two pedestrians walk along the curb and remain on the sidewalk as the scene unfolds. No oncoming vehicles or traffic signals are visible.", "hazard_reasoning": "There is a white truck driving away from the ego car, in the ego lane. The truck may brake suddenly or hide hazards around the curve, so the driver should maintain a safe following distance."}
{"id": "train_01990", "split": "train", "clip_key": "2020-0218-103119_006645_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "006645"}, "frames": ["2020-0218-103119_006645_movie_t-3.jpg", "2020-0218-103119_006645_movie_t-2.jpg", "2020-0218-103119_006645_movie_t-1.jpg", "2020-0218-103119_006645_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "be cautious of green sedan accelerating ahead", "environment_perception": "An urban residential street with a very narrow two-way carriageway and green advisory shoulders shows smooth pavement and light traffic, with no divider. Ahead in the ego lane near the left side, a green sedan accelerates straight. On the right edge, a white light truck remains stopped in a driveway, slightly narrowing the corridor but outside the ego path. Parked vehicles and a parking machine line the left, while buildings and utility poles closely flank the roadway.", "hazard_reasoning": "There is a green sedan accelerating on the left side of the road, in the ego lane. Its rapid acceleration ahead could result in an unexpected lane change or reduced reaction time, so the driver should stay alert."}
{"id": "train_01991", "split": "train", "clip_key": "2020-0207-101955_018009_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_018009_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_018009_movie_t-3_augB1.jpg", "2020-0207-101955_018009_movie_t-2_augB1.jpg", "2020-0207-101955_018009_movie_t-1_augB1.jpg", "2020-0207-101955_018009_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with at least two lanes per direction and a painted divider runs straight on smooth pavement, and traffic appears moderate. A small covered truck directly ahead in the ego lane slows and sets the pace, aligning with the note about a slowing truck. To the right, a white van in the adjacent same-direction lane proceeds slightly ahead at a steady speed without drifting toward the ego lane. On the left shoulder just ahead, two delivery trucks are parked beside the curb-one a large box truck with its rear ramp open-forming a roadside obstruction near the buildings.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane. The ego-vehicle must decelerate to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_01992", "split": "train", "clip_key": "titan_clip_1367_000420_movie", "source": {"subset": "titan", "scenario": "clip_1367", "frame": "000420"}, "frames": ["titan_clip_1367_000420_movie_t-3.jpg", "titan_clip_1367_000420_movie_t-2.jpg", "titan_clip_1367_000420_movie_t-1.jpg", "titan_clip_1367_000420_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "A narrow urban street with a single travel lane and no median runs between close buildings; the pavement is smooth and traffic is light. On the right side ahead, a van stands partially in the ego lane with its rear door open as it is being unloaded, narrowing the passage and posing an immediate obstruction. Farther ahead in the same direction, a white box truck proceeds slowly away, potentially constraining pace once past the parked van. In the distance, a small white car continues straight ahead in the lane. Bicycles are parked along the left sidewalk and street furniture lines the right curb, reducing shoulder space.", "hazard_reasoning": "There is a van parked on the right side of the road, in the ego lane, because it is being unloaded. Because the parked van obstructs the lane, the driver may need to maneuver around it to avoid collision, so they should carefully manoeuvre around the van."}
{"id": "train_01993", "split": "train", "clip_key": "titan_clip_823_000348_movie", "source": {"subset": "titan", "scenario": "clip_823", "frame": "000348"}, "frames": ["titan_clip_823_000348_movie_t-3.jpg", "titan_clip_823_000348_movie_t-2.jpg", "titan_clip_823_000348_movie_t-1.jpg", "titan_clip_823_000348_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street with no centerline runs between buildings; the dry pavement looks smooth and there is no moving vehicular traffic. The ego-vehicle advances in the left-side lane with no cars ahead or oncoming. On the left edge near the ego path, a pedestrian in black pants carrying a white bag walks away along the roadway because a sidewalk obstacle forces them off the curb, and they may briefly occupy the lane. Farther ahead near the middle-left, two pedestrians with umbrellas walk away in the road, constraining the car's pace. Near the left foreground, another person with an umbrella approaches toward the camera along the margin, reducing lateral clearance. Vending machines and a cone crowd the right sidewalk, creating the pinch point.", "hazard_reasoning": "There is a pedestrian wearing black pants, carrying a white bag, and walking on the left side of the road away from the ego-car because of an obstacle on the sidewalk. The pedestrian's position on the roadway increases collision risk, so the driver should slow down to maintain safety."}
{"id": "train_01994", "split": "train", "clip_key": "titan_clip_1258_000072_movie", "source": {"subset": "titan", "scenario": "clip_1258", "frame": "000072"}, "frames": ["titan_clip_1258_000072_movie_t-3.jpg", "titan_clip_1258_000072_movie_t-2.jpg", "titan_clip_1258_000072_movie_t-1.jpg", "titan_clip_1258_000072_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential street with a very narrow two-way carriageway lacks a centerline; the pavement is dry and smooth, and traffic is light with no moving vehicles. The road bends slightly left past a small junction on the right where buildings hug the curb, limiting sight lines. A black van is parked on the right at the mouth of the side street under a carport, stationary near the corner but outside the ego lane. A pedestrian ahead on the left edge walks away along the curb, close to the travel path and possibly affecting the pace. Another person stands farther ahead by a storefront on the left, waiting against the wall without entering the roadway. Twin convex mirrors fixed to a utility pole overlook the intersection.", "hazard_reasoning": "There are no immediate hazards such as oncoming vehicles, debris, or pedestrians crossing in the path. The road conditions are clear with no potential risks detected, so no warning is necessary under these circumstances."}
{"id": "train_01995", "split": "train", "clip_key": "titan_clip_1021_000378_movie", "source": {"subset": "titan", "scenario": "clip_1021", "frame": "000378"}, "frames": ["titan_clip_1021_000378_movie_t-3.jpg", "titan_clip_1021_000378_movie_t-2.jpg", "titan_clip_1021_000378_movie_t-1.jpg", "titan_clip_1021_000378_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "An urban backstreet with close-set buildings appears, a narrow two-way roadway with no centerline; the pavement looks worn with patches and the overall flow is light with no moving traffic. Along the left edge ahead, a pedestrian wearing a red cap and black pants walks toward the ego vehicle by the curb, close to the travel path and may enter the lane. Parked vehicles line the right side, including a black SUV near the camera, constricting the usable width but remaining stationary. A single orange cone stands by the left curb.", "hazard_reasoning": "There is a pedestrian wearing a red cap and black pants, walking along the left side of the road, toward the ego car. The pedestrian is approaching the vehicle's path and may step off the sidewalk unexpectedly, so the driver should be cautious to avoid a collision."}
{"id": "train_01996", "split": "train", "clip_key": "titan_clip_634_000564_movie", "source": {"subset": "titan", "scenario": "clip_634", "frame": "000564"}, "frames": ["titan_clip_634_000564_movie_t-3.jpg", "titan_clip_634_000564_movie_t-2.jpg", "titan_clip_634_000564_movie_t-1.jpg", "titan_clip_634_000564_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban narrow two-way street with no center line runs between buildings, the pavement is smooth, and traffic is very light with no cars nearby. Ahead on the right, a pedestrian in black trousers and a bluish sleeveless top walks along the road edge close to the ego path and may step into the lane. On the left near the intersecting side street, a small group of pedestrians stands and walks by the storefronts at the curb, with some near the edge where they could enter the roadway. Farther ahead near the middle of the lane, a bicyclist rides slowly in the same direction, occupying the path. Bollards line the right sidewalk, and a steep side road branches uphill to the left.", "hazard_reasoning": "There is a pedestrian wearing a pair of black trousers, a bluish sleeveless top, with short black hair, walking on the right side of the road, in front of the ego car. The pedestrian could move unpredictably into the lane, so the driver should be aware to maintain safety."}
{"id": "train_01997", "split": "train", "clip_key": "2020-0203-154554_072791_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "072791"}, "frames": ["2020-0203-154554_072791_movie_t-3.jpg", "2020-0203-154554_072791_movie_t-2.jpg", "2020-0203-154554_072791_movie_t-1.jpg", "2020-0203-154554_072791_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two lanes in the ego direction is dry and well marked, and traffic is moderate with vehicles queued at a signal. A red hatchback directly ahead in the ego lane stops for the red traffic light, holding the ego vehicle. To the left, a dark van in the adjacent same-direction lane also waits at the intersection, slightly ahead of the red car. On the opposite side, an oncoming city bus followed by a white car proceeds through the junction in their lane without stopping. The overhead signal facing the ego direction shows red.", "hazard_reasoning": "There is a red hatchback stopped in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe distance and avoid a collision."}
{"id": "train_01998", "split": "train", "clip_key": "2020-0217-110854_034902_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "034902"}, "frames": ["2020-0217-110854_034902_movie_t-3.jpg", "2020-0217-110854_034902_movie_t-2.jpg", "2020-0217-110854_034902_movie_t-1.jpg", "2020-0217-110854_034902_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to the stopped gray hatchback.", "environment_perception": "A busy urban multi-lane arterial with painted center markings and smooth pavement carries heavy, slow traffic toward a signalized intersection. A gray hatchback directly ahead in the ego lane is stopped, holding the queue because the crosswalk light at the intersection is flashing. A large coach bus to the right creeps forward alongside, running close to the lane line and limiting lateral space. In the adjacent left lane, a line of cars inches ahead at the same stop-and-go pace toward the junction. Overhead wayfinding signs and the crosswalk are visible, and no unusual obstacles or work zones appear.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego-car, in the ego lane, because of the flashing crosswalk light ahead at the intersection. The flashing crosswalk light suggests pedestrians may be crossing, causing the hatchback to stop. You should yield to the stopped vehicle to avoid a rear-end collision and ensure safety."}
{"id": "train_01999", "split": "train", "clip_key": "2020-0226-101332_060632_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "060632"}, "frames": ["2020-0226-101332_060632_movie_t-3.jpg", "2020-0226-101332_060632_movie_t-2.jpg", "2020-0226-101332_060632_movie_t-1.jpg", "2020-0226-101332_060632_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with several same-direction lanes and smooth pavement carries heavy, slow traffic toward a signalized intersection. The ego vehicle is in a middle lane, queued behind a gray van that is stopped because the overhead traffic light is red, holding the ego car. In the right adjacent lane, a white van creeps forward alongside, keeping to its lane and limiting a move to the right. At the crosswalk ahead, several pedestrians are crossing from right to left under the red signal. No unusual hazards or work zones are visible.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, because of a red traffic light. You must stop to avoid colliding with the stopped van and obey the traffic signal."}
{"id": "train_02000", "split": "train", "clip_key": "2020-0217-144444_006103_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "006103"}, "frames": ["2020-0217-144444_006103_movie_t-3.jpg", "2020-0217-144444_006103_movie_t-2.jpg", "2020-0217-144444_006103_movie_t-1.jpg", "2020-0217-144444_006103_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes and smooth pavement leads toward an intersection, and traffic is light to moderate with vehicles moving steadily. A silver sedan ahead in the ego lane proceeds straight and sets our pace. To the right, a black SUV in the adjacent lane advances slightly ahead while maintaining its lane. Farther right, a white van continues toward the junction with steady speed. At the crosswalk ahead, a pedestrian wearing a black shirt and black pants waits on the left to cross to the right and may enter our path. A traffic light hangs over the junction, and large painted arrows indicate through travel.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants, and waiting to cross, from the left to the right side, at the crosswalk ahead at the intersection. Stop to yield to the pedestrian crossing ahead and avoid collision."}
{"id": "train_02001", "split": "train", "clip_key": "2020-0204-150838_062260_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "062260"}, "frames": ["2020-0204-150838_062260_movie_t-3.jpg", "2020-0204-150838_062260_movie_t-2.jpg", "2020-0204-150838_062260_movie_t-1.jpg", "2020-0204-150838_062260_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road with dry, smooth asphalt and a vegetated left shoulder shows heavy, largely stopped traffic. A gray van directly ahead in the ego lane is stationary because of congestion ahead, holding the ego vehicle at a standstill. Farther ahead in the same lane, a tall white box truck also waits without moving, continuing the queue that blocks the path. In the adjacent right lane, a large silver trailer truck is stopped alongside, parallel to the ego vehicle. More trucks line up farther ahead in the right lane. Overhead green directional signs are visible above the roadway.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, because of traffic congestion ahead. You should slow down to maintain a safe following distance and adapt to the slower traffic conditions."}
{"id": "train_02002", "split": "train", "clip_key": "2020-0127-132751_104584_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "104584"}, "frames": ["2020-0127-132751_104584_movie_t-3.jpg", "2020-0127-132751_104584_movie_t-2.jpg", "2020-0127-132751_104584_movie_t-1.jpg", "2020-0127-132751_104584_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A suburban commercial two-way road with one lane in each direction curves gently right, divided by a solid yellow centerline on dry, intact pavement; traffic moves slowly. A silver van directly ahead in the ego lane remains stopped with brake lights on because of traffic congestion, holding the ego vehicle's position. An oncoming dark sedan travels past in the opposite lane at a steady pace, separated by the centerline and not affecting the ego path. A pedestrian stands on the right sidewalk near a roadside sign and guardrail, staying clear of the carriageway. Buildings, driveways, and parked bicycles line both sides.", "hazard_reasoning": "There is a silver van stopped in front of the ego car in the ego lane, because of traffic congestion. You should stop promptly to avoid colliding with the halted vehicle."}
{"id": "train_02003", "split": "train", "clip_key": "titan_clip_726_000468_movie", "source": {"subset": "titan", "scenario": "clip_726", "frame": "000468"}, "frames": ["titan_clip_726_000468_movie_t-3.jpg", "titan_clip_726_000468_movie_t-2.jpg", "titan_clip_726_000468_movie_t-1.jpg", "titan_clip_726_000468_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrian on crosswalk", "environment_perception": "An urban two-way street with one lane in each direction and a short planted median ahead appears wet but in good condition, and traffic is light with no vehicles visible in either direction. Directly ahead, a pedestrian with a backpack crosses the crosswalk from the left to the right across the ego lane, constraining the pace. At the right curb, a man wearing a white shirt and black pants holds a jacket and crosses the street on the crosswalk toward the left, entering the ego lane. Farther along the right sidewalk, another person walks away from the intersection and stays off the roadway.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, holding a jacket, and crossing the street on a crosswalk, from the right side to the left side. In this situation, you must stop to allow the pedestrian to cross safely."}
{"id": "train_02004", "split": "train", "clip_key": "2020-0204-103442_094356_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "094356"}, "frames": ["2020-0204-103442_094356_movie_t-3.jpg", "2020-0204-103442_094356_movie_t-2.jpg", "2020-0204-103442_094356_movie_t-1.jpg", "2020-0204-103442_094356_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes runs past shops, with a painted side bay and rough verge on the right; the pavement is mostly smooth and traffic is moderate, bunching at an intersection. A white van ahead in the ego lane is stopped for a red light, holding the ego vehicle. A yellow hatchback slightly ahead in the adjacent right lane slows and comes to a stop at the same signal. Farther ahead, a dark car in the right lane also queues at the light. Overhead traffic signals show red above the intersection. The right edge includes a disused, debris-strewn bay separated by markings.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The driver must stop to prevent a collision with the stationary van at the red signal."}
{"id": "train_02005", "split": "train", "clip_key": "2020-0228-150133_053656_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "053656"}, "frames": ["2020-0228-150133_053656_movie_t-3.jpg", "2020-0228-150133_053656_movie_t-2.jpg", "2020-0228-150133_053656_movie_t-1.jpg", "2020-0228-150133_053656_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid a collision", "environment_perception": "An urban divided arterial with multiple lanes per direction runs straight on dry pavement, separated by a guardrail median; traffic is heavy with a forming queue ahead. A gray sedan directly ahead in the ego lane slows to a near stop because of congestion and sets the pace. A small silver van slightly ahead in the adjacent left lane creeps forward parallel to the ego vehicle and may merge if a gap opens. Across the median, oncoming vehicles including a white box truck move slowly toward the camera but remain separated. Overhead blue direction signs span the roadway.", "hazard_reasoning": "A gray sedan is slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe distance and prevent a collision."}
{"id": "train_02006", "split": "train", "clip_key": "titan_clip_460_000066_movie", "source": {"subset": "titan", "scenario": "clip_460", "frame": "000066"}, "frames": ["titan_clip_460_000066_movie_t-3.jpg", "titan_clip_460_000066_movie_t-2.jpg", "titan_clip_460_000066_movie_t-1.jpg", "titan_clip_460_000066_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with no median is lined by buildings and a sidewalk; the pavement looks smooth and traffic is light with no oncoming vehicles. On the right side ahead, a pedestrian wearing a blue shirt and brown pants walks toward the ego along the edge of the roadway, potentially edging into the lane. Farther ahead near the center-right, several pedestrians move along the street and intermittently drift toward the travel path, constraining the ego's pace. A black minivan stands parked at the left curb close to the camera, narrowing the usable lane as the ego proceeds. No traffic signals or speed signs are salient, and roadside posts and a tree create a slightly confined corridor.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and brown pants, walking on the right side of the road, toward the ego car. The driver should carefully manoeuvre because the pedestrian is approaching the vehicle's path and could step into its trajectory."}
{"id": "train_02007", "split": "train", "clip_key": "titan_clip_765_000180_movie", "source": {"subset": "titan", "scenario": "clip_765", "frame": "000180"}, "frames": ["titan_clip_765_000180_movie_t-3.jpg", "titan_clip_765_000180_movie_t-2.jpg", "titan_clip_765_000180_movie_t-1.jpg", "titan_clip_765_000180_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the approaching pedestrian", "environment_perception": "An urban one-lane street lined with shops appears one-way with a forward arrow; pavement is smooth and there are no moving vehicles, so traffic is light. Ahead near the center-left, a small work zone with cones and a lift narrows the path. On the right edge, a pedestrian in a white shirt and black pants, carrying a briefcase and a coat, walks toward the ego car close to the lane and could step into it. On the left, a woman holding a phone stands partly in the roadway and edges forward near the curb. Far ahead by the cones, pedestrians cross the lane and another walks along its center, shaping the available path through the constricted area.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a briefcase and a coat, and walking towards the ego car, on the right side of the road. The pedestrian is approaching the vehicle's path and may step onto the road unexpectedly, so the driver should be cautious."}
{"id": "train_02008", "split": "train", "clip_key": "2020-0206-142535_014652_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "014652"}, "frames": ["2020-0206-142535_014652_movie_t-3.jpg", "2020-0206-142535_014652_movie_t-2.jpg", "2020-0206-142535_014652_movie_t-1.jpg", "2020-0206-142535_014652_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane intersection among tall buildings comes into view with smooth pavement and a wide zebra crossing, and cross-traffic is moderate. Ahead in the junction, a black sedan turns across the ego vehicle's path from the right, entering the cross street and briefly occupying the space ahead. On the far side, several white vans and cars travel along the cross street from left to right, setting the flow that currently limits the ego from proceeding. Near the right curb by the corner, a cyclist moves toward the intersection and could enter the crossing. Pedestrians stand on the sidewalks, and an elevated roadway extends in the distance.", "hazard_reasoning": "No hazards detected; conditions are clear and traffic flows smoothly, allowing safe passage."}
{"id": "train_02009", "split": "train", "clip_key": "titan_clip_541_000054_movie", "source": {"subset": "titan", "scenario": "clip_541", "frame": "000054"}, "frames": ["titan_clip_541_000054_movie_t-3.jpg", "titan_clip_541_000054_movie_t-2.jpg", "titan_clip_541_000054_movie_t-1.jpg", "titan_clip_541_000054_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the cherry picker ahead", "environment_perception": "An urban two-way street with a single narrow lane per direction and no median appears, the pavement smooth and traffic light. Ahead in the ego lane, a white cherry picker truck is stopped with its boom extended over the street, and a person stands on its platform, so it blocks the lane and constrains the ego car's progress. On the right sidewalk, a man walks away along the curb but stays on the walkway. On the left sidewalk near cones by the glass-fronted building, another person stands close to the work area around the pole. No other same-direction or oncoming vehicles are visible, and bollards and construction fencing line the edges.", "hazard_reasoning": "There is a white cherry picker in front of the ego car, in the ego lane, because there is a person on its platform. The driver should be cautious because the stopped construction vehicle and raised platform obstruct the lane and pose a collision risk."}
{"id": "train_02010", "split": "train", "clip_key": "titan_clip_416_000054_movie", "source": {"subset": "titan", "scenario": "clip_416", "frame": "000054"}, "frames": ["titan_clip_416_000054_movie_t-3.jpg", "titan_clip_416_000054_movie_t-2.jpg", "titan_clip_416_000054_movie_t-1.jpg", "titan_clip_416_000054_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban back street with stone paving and no lane markings runs straight between buildings, functioning as a narrow shared road with smooth surface and very light traffic. On the left ahead, a pedestrian walks away from the ego vehicle in the roadway because the sidewalk is narrow, keeping close to the wall and potentially influencing the ego car's pace. Farther ahead near the center, two more pedestrians walk in the same direction, one under an umbrella, occupying the travel path and remaining relevant to the ego lane. No vehicles appear, and short bollards and trees on the right edge further constrict the usable width.", "hazard_reasoning": "There is a pedestrian walking on the left side of the road, because of the narrow sidewalk, away from the ego car. The driver should manoeuvre carefully around the pedestrian to maintain safe separation."}
{"id": "train_02011", "split": "train", "clip_key": "titan_clip_1329_000564_movie", "source": {"subset": "titan", "scenario": "clip_1329", "frame": "000564"}, "frames": ["titan_clip_1329_000564_movie_t-3.jpg", "titan_clip_1329_000564_movie_t-2.jpg", "titan_clip_1329_000564_movie_t-1.jpg", "titan_clip_1329_000564_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the cyclist carefully", "environment_perception": "An urban neighborhood street appears narrow and two-way without a centerline, bordered by close-set buildings; the pavement is even and dry, and traffic is light with no oncoming vehicles. Ahead near the center-right, a cyclist wearing a blue top and black pants rides away along the roadway, occupying part of the narrow lane and likely to set the ego car's pace. On the right foreground, a blue truck is stopped at the curb, protruding slightly into the road but remaining on the oncoming side. Along the left curb beside the ego path, two parked bicycles stand close to the travel lane, reducing clearance.", "hazard_reasoning": "There is a cyclist wearing a blue t-shirt and black pants, and standing on the right side of the road ahead of the ego-car. The cyclist may unexpectedly move into the traffic lane, so the driver should manoeuvre around them carefully to avoid collision."}
{"id": "train_02012", "split": "train", "clip_key": "2020-0212-102546_039593_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "039593"}, "frames": ["2020-0212-102546_039593_movie_t-3.jpg", "2020-0212-102546_039593_movie_t-2.jpg", "2020-0212-102546_039593_movie_t-1.jpg", "2020-0212-102546_039593_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial under an elevated expressway approaches a signalized intersection; the dry pavement is smooth, with a narrow curb island on the right, and traffic is queued. A gray van directly ahead in the ego lane remains stopped for the red light, holding the ego car. In the lane to the left, a white SUV stands slightly ahead with its driver door open toward the lane, narrowing space beside the ego vehicle. Farther left, a purple truck is also stopped alongside in the queue and does not advance. The overhead signals ahead display red for the approach.", "hazard_reasoning": "A gray van is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to avoid a rear-end collision with the stationary vehicle at the red light."}
{"id": "train_02013", "split": "train", "clip_key": "2020-0228-102841_082640_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "082640"}, "frames": ["2020-0228-102841_082640_movie_t-3.jpg", "2020-0228-102841_082640_movie_t-2.jpg", "2020-0228-102841_082640_movie_t-1.jpg", "2020-0228-102841_082640_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs between office buildings; the pavement is smooth and traffic is moderate but bunching near a signalized intersection. Ahead-left, a white sedan changes lanes into the ego lane, squeezing into a gap because the flow is congested and it may enter our path. Directly ahead, a beige box truck in the ego lane moves slowly, setting the pace. Slightly ahead to the right, a silver van continues in the right lane at a similar speed, limiting overtaking options. Overhead traffic signals hang before the junction, and a metal barrier lines the right side.", "hazard_reasoning": "There is a white sedan changing lanes from the left lane to the ego lane, because there is traffic congestion, in front of the ego car. You should slow down to allow the vehicle to merge safely and prevent a collision."}
{"id": "train_02014", "split": "train", "clip_key": "2020-0206-101736_036104_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "036104"}, "frames": ["2020-0206-101736_036104_movie_t-3.jpg", "2020-0206-101736_036104_movie_t-2.jpg", "2020-0206-101736_036104_movie_t-1.jpg", "2020-0206-101736_036104_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban arterial with two same-direction lanes and a right-turn lane branches to the right, with no physical median and oncoming traffic on the right; the pavement looks smooth and traffic in the ego direction is heavy and stop-and-go. Directly ahead in the ego lane, a white sedan is stopped because of congestion and holds the ego vehicle. Slightly ahead to the left, a white minivan in the adjacent lane creeps forward in the queue, limiting any lane change. Farther ahead in the same direction near the junction, a box truck waits with the line of vehicles, reinforcing the slowdown. Overhead blue direction signs indicate lanes for going straight and for right turns.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car in the ego lane, because of traffic congestion ahead. You should stop to avoid colliding with the halted vehicle under these conditions."}
{"id": "train_02015", "split": "train", "clip_key": "titan_clip_141_000510_movie", "source": {"subset": "titan", "scenario": "clip_141", "frame": "000510"}, "frames": ["titan_clip_141_000510_movie_t-3.jpg", "titan_clip_141_000510_movie_t-2.jpg", "titan_clip_141_000510_movie_t-1.jpg", "titan_clip_141_000510_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street has one lane in each direction with no median, smooth pavement, and light vehicle flow amid heavy foot traffic as the ego travels on the left. Two pedestrians, one wearing a white shirt and the other a black shirt, cross midblock from left to right ahead, passing through the ego lane. A white box truck ahead in the same lane slows near the intersection, constraining the ego vehicle's pace. A black SUV at the left curb near the camera waits angled toward the lane and may merge after the pedestrians clear. A blue straight-ahead regulatory sign is posted on the left.", "hazard_reasoning": "There are two pedestrians wearing a white and a black shirt, crossing the street in the middle of the road, from the left side to the right side. The driver should slow down to avoid a potential collision with these pedestrians and ensure their safe crossing."}
{"id": "train_02016", "split": "train", "clip_key": "2020-0220-151845_057156_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "057156"}, "frames": ["2020-0220-151845_057156_movie_t-3.jpg", "2020-0220-151845_057156_movie_t-2.jpg", "2020-0220-151845_057156_movie_t-1.jpg", "2020-0220-151845_057156_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided roadway runs under an elevated expressway, with two same-direction lanes bordered by a left guardrail and a right concrete wall; the pavement is smooth and traffic builds from moderate to heavy as a queue forms ahead. A red truck directly ahead in the ego lane slows and then creeps because congestion develops, setting the ego vehicle's pace. In the right lane, a silver minivan draws level and proceeds slowly alongside, limiting room for a right-lane change. A dark car at the near right edge advances past the ego car and continues in the right lane amid the slowing line of vehicles.", "hazard_reasoning": "There is a red truck in the ego-car lane that is slowing down, because there is traffic congestion ahead. The driver should slow down because the red truck ahead is reducing speed due to congestion, increasing the risk of a rear-end collision."}
{"id": "train_02017", "split": "train", "clip_key": "2020-0226-140503_104310_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "104310"}, "frames": ["2020-0226-140503_104310_movie_t-3.jpg", "2020-0226-140503_104310_movie_t-2.jpg", "2020-0226-140503_104310_movie_t-1.jpg", "2020-0226-140503_104310_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road with one lane in each direction runs straight, bordered by a narrow sidewalk on the left and a metal guardrail on the right; the pavement is dry and traffic is light. Directly ahead in the ego lane, a silver box truck accelerates away from the ego car and gradually increases the gap, setting the pace. Farther ahead in the oncoming lane, a dark truck approaches but remains in its lane with clear separation. A pedestrian stands on the left sidewalk near a shop entrance, not entering the roadway.", "hazard_reasoning": "There is a silver truck in the ego lane, accelerating away from the ego car. Because the truck is pulling ahead, the driver should start moving to maintain traffic flow and avoid unnecessary delay."}
{"id": "train_02018", "split": "train", "clip_key": "2020-0131-135401_062186_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "062186"}, "frames": ["2020-0131-135401_062186_movie_t-3.jpg", "2020-0131-135401_062186_movie_t-2.jpg", "2020-0131-135401_062186_movie_t-1.jpg", "2020-0131-135401_062186_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes and painted center lines has dry, smooth pavement and moderate, steady traffic. A small white van directly ahead in the ego lane slows because of congestion ahead, setting the ego car's pace. In the lane to the right, a silver minivan runs slightly ahead and continues straight, limiting space for a rightward merge. Farther right, a black car proceeds forward in parallel without affecting the ego path. A pedestrian crossing and its warning sign appear on the left at a side street, with no pedestrians entering the roadway.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to reduced traffic speed ahead."}
{"id": "train_02019", "split": "train", "clip_key": "2020-0226-140503_068985_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "068985"}, "frames": ["2020-0226-140503_068985_movie_t-3.jpg", "2020-0226-140503_068985_movie_t-2.jpg", "2020-0226-140503_068985_movie_t-1.jpg", "2020-0226-140503_068985_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped van", "environment_perception": "In an urban setting, the ego-vehicle travels on a three-lane arterial with a fenced median separating oncoming lanes to the right; the pavement is dry and traffic flows lightly under elevated structures. Ahead in the center lane, a black car cruises at a steady speed and sets the ego vehicle's pace. On the left shoulder, a silver van is stopped at the curb as noted in the caption and remains stationary. Farther ahead near the underpass, a truck in the same direction moves slowly with a large gap before it. A blue overhead sign gives route directions and notes guidance 250 m ahead.", "hazard_reasoning": "There is a silver van stopped on the left side of the road. The vehicle may partially obstruct the lane ahead, so the driver should be aware of the stopped van to adjust speed or steering accordingly."}
{"id": "train_02020", "split": "train", "clip_key": "titan_clip_1192_000336_movie", "source": {"subset": "titan", "scenario": "clip_1192", "frame": "000336"}, "frames": ["titan_clip_1192_000336_movie_t-3.jpg", "titan_clip_1192_000336_movie_t-2.jpg", "titan_clip_1192_000336_movie_t-1.jpg", "titan_clip_1192_000336_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban side street with brick paving and no lane markings runs between closely spaced buildings, functioning as a single shared lane with very light vehicle traffic. The ego-vehicle moves slowly along the center as pedestrians dominate the scene. On the right edge, a man walks toward the camera along the gutter and passes close to the travel lane, reducing lateral clearance. Ahead on the left, another pedestrian walks in the roadway toward the ego path before keeping to the left, potentially affecting speed. A black car is stopped along the left curb just ahead, its position narrowing the usable lane. No traffic signals or notable signs control the scene, and there are no dividers or medians.", "hazard_reasoning": "No immediate hazards are present; the stop sign is the only traffic control and can be approached normally."}
{"id": "train_02021", "split": "train", "clip_key": "2020-0207-101955_001580_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "001580"}, "frames": ["2020-0207-101955_001580_movie_t-3.jpg", "2020-0207-101955_001580_movie_t-2.jpg", "2020-0207-101955_001580_movie_t-1.jpg", "2020-0207-101955_001580_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban divided road with a shrub median and smooth pavement approaches a signalized intersection; traffic is light, with oncoming lanes beyond the median to the right. A black minivan directly ahead in the ego lane continues forward and then turns right at the intersection, moving away from the ego car and briefly controlling the ego pace. Ahead-left in the same direction, a large white box truck completes a left turn through the junction, clearing the approach. Pedestrians cluster on the right-side sidewalk and near the far crosswalk, waiting to cross without entering the roadway. A no-parking sign and guardrails line the left side.", "hazard_reasoning": "There is a black minivan driving and turning right away from the ego car, in the ego lane. This maneuver indicates the vehicle will merge into your lane ahead, so you should follow the vehicle ahead to maintain a safe distance and avoid collision."}
{"id": "train_02022", "split": "train", "clip_key": "titan_clip_21_000264_movie", "source": {"subset": "titan", "scenario": "clip_21", "frame": "000264"}, "frames": ["titan_clip_21_000264_movie_t-3.jpg", "titan_clip_21_000264_movie_t-2.jpg", "titan_clip_21_000264_movie_t-1.jpg", "titan_clip_21_000264_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of the pedestrian crossing", "environment_perception": "An urban two-way street with one narrow lane each way runs between midrise buildings, the asphalt smooth and dry, and overall traffic light but slowed by curbside stops. The ego vehicle proceeds in the left lane with no median. Ahead, a pedestrian wearing a black shirt and pants crosses from right to left directly in front of the car, entering the ego path. Along the left curb, a silver van is parked and narrows the lane. On the right side, a large box truck stands at the curb with its rear open, leaving a tight passage. Farther ahead, several vans continue straight in the same direction.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and pants, crossing the street from the right side to the left side, in front of the ego car. The pedestrian is entering the vehicle's path, so the driver should be cautious and prepare to slow down."}
{"id": "train_02023", "split": "train", "clip_key": "2020-0227-153144_010075_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "010075"}, "frames": ["2020-0227-153144_010075_movie_t-3.jpg", "2020-0227-153144_010075_movie_t-2.jpg", "2020-0227-153144_010075_movie_t-1.jpg", "2020-0227-153144_010075_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane each way has dry, smooth pavement and a metal railing along the right sidewalk, and traffic is light as the road curves gently right. A black sedan ahead in the ego lane cruises steadily and effectively sets the ego vehicle's pace. An oncoming white truck approaches in the right-side lane and continues straight within its lane, passing without conflict. A dark car is stopped at the left curb near the camera with its nose close to the roadway, which may enter the ego lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can continue at the current speed."}
{"id": "train_02024", "split": "train", "clip_key": "2020-0217-110854_055238_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "055238"}, "frames": ["2020-0217-110854_055238_movie_t-3.jpg", "2020-0217-110854_055238_movie_t-2.jpg", "2020-0217-110854_055238_movie_t-1.jpg", "2020-0217-110854_055238_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road runs under an elevated expressway, with one narrow lane per direction divided by a solid yellow centerline; the pavement is dry and smooth, and the road climbs gently into a right-hand curve. Traffic is light with no oncoming vehicles in view. A white kei van proceeds ahead in the ego lane at a steady pace, effectively setting the ego vehicle's speed. Farther ahead, another car in the same direction continues up the grade toward the bend, remaining well separated. Concrete sidewalls and viaduct columns confine sightlines through the curve, and no salient signals or speed signs are visible.", "hazard_reasoning": "No hazards are detected as the road ahead is clear, traffic flow is steady, and visibility is good, so no immediate warning is necessary."}
{"id": "train_02025", "split": "train", "clip_key": "2020-0206-101736_001865_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "001865"}, "frames": ["2020-0206-101736_001865_movie_t-3.jpg", "2020-0206-101736_001865_movie_t-2.jpg", "2020-0206-101736_001865_movie_t-1.jpg", "2020-0206-101736_001865_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street under an elevated structure has two same-direction lanes and dry pavement, with light traffic queued at a signalized intersection. Ahead in the ego lane a red sedan is stopped at the crosswalk for a red light, holding the ego car. To its left a silver box truck stands in the adjacent lane slightly ahead, limiting visibility and any lane change. Pedestrians in the crosswalk move right to left across the stopped traffic while others wait near the curb. A traffic signal ahead clearly shows red.", "hazard_reasoning": "There is a red sedan, that has stopped in front of the ego car, in the ego lane, because of the red traffic light. You must stop to maintain a safe following distance and obey the red light."}
{"id": "train_02026", "split": "train", "clip_key": "2020-0204-103442_068922_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "068922"}, "frames": ["2020-0204-103442_068922_movie_t-3.jpg", "2020-0204-103442_068922_movie_t-2.jpg", "2020-0204-103442_068922_movie_t-1.jpg", "2020-0204-103442_068922_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A suburban two-way road with one lane each way and a solid center line descends gently, the pavement smooth and marked with a large 40 speed limit; overall flow is moderate. A black sedan ahead in the ego lane slows because of traffic congestion ahead, setting the ego vehicle's pace. The opposite lane is clear nearby and poses no immediate interaction. No pedestrians, cyclists, or obstacles are visible along the narrow sidewalks.", "hazard_reasoning": "There is a black sedan slowing in the ego-car lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance as the vehicle ahead decelerates due to congestion."}
{"id": "train_02027", "split": "train", "clip_key": "2020-0220-102630_048541_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "048541"}, "frames": ["2020-0220-102630_048541_movie_t-3.jpg", "2020-0220-102630_048541_movie_t-2.jpg", "2020-0220-102630_048541_movie_t-1.jpg", "2020-0220-102630_048541_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement and only painted separation from opposing traffic carries moderate, steadily moving flow. A black van ahead in the ego lane continues straight and pulls away under a green traffic signal at the distant intersection. Two trucks in the adjacent right lanes travel straight at a similar pace, forming a moving block that limits rightward merging. A white hatchback near the left curb appears stopped in the side lane beside the ego lane, close to the traffic stream but outside the main flow.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car, because of a green traffic light. This means the van ahead may accelerate, so follow the vehicle ahead to maintain a safe distance."}
{"id": "train_02028", "split": "train", "clip_key": "titan_clip_321_000840_movie", "source": {"subset": "titan", "scenario": "clip_321", "frame": "000840"}, "frames": ["titan_clip_321_000840_movie_t-3.jpg", "titan_clip_321_000840_movie_t-2.jpg", "titan_clip_321_000840_movie_t-1.jpg", "titan_clip_321_000840_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shopping alley serves as a single, very narrow shared street with no marked lanes or divider; the surface is a mix of pavers and patched asphalt, and traffic is light with no vehicles moving. Ahead in the center of the road, a woman in a green blouse and black pants carries a white bag and walks steadily down the middle because there is no sidewalk, occupying the ego vehicle's path. Farther ahead near the storefronts, a few other pedestrians move along the edges and continue away from the camera without entering the lane. Numerous sandwich boards and a blue bin line both sides, encroaching into the roadway and narrowing the passage.", "hazard_reasoning": "There is a female pedestrian, wearing a green blouse, black pants and carrying a white back, who is walking down the middle of the street, because there is no sidewalk. The driver must be cautious and manoeuvre slowly to avoid colliding with the pedestrian in the narrow path, navigating around the debris safely."}
{"id": "train_02029", "split": "train", "clip_key": "2020-0207-151349_033537_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "033537"}, "frames": ["2020-0207-151349_033537_movie_t-3.jpg", "2020-0207-151349_033537_movie_t-2.jpg", "2020-0207-151349_033537_movie_t-1.jpg", "2020-0207-151349_033537_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs beneath an elevated structure with a right-side guardrail; pavement is serviceable, and traffic is heavy and slow, especially in the left lanes. In the ego lane a gray scooter stops directly ahead because congestion blocks the way, constraining the ego vehicle. To the left, a line of cars and a box truck stands nearly still and creeps forward, with some edging toward the ego lane and possibly entering the ego path. Farther ahead more same-direction vehicles bunch up, maintaining the slow flow. Strong sun glare into the camera and the close barrier on the right reduce apparent visibility and lateral space.", "hazard_reasoning": "There is a gray scooter which has stopped in front of the ego car because of traffic congestion ahead. The scooter's sudden stop signals slowing traffic, so the driver should slow down to maintain a safe distance and avoid collision."}
{"id": "train_02030", "split": "train", "clip_key": "2020-0131-103016_023084_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "023084"}, "frames": ["2020-0131-103016_023084_movie_t-3.jpg", "2020-0131-103016_023084_movie_t-2.jpg", "2020-0131-103016_023084_movie_t-1.jpg", "2020-0131-103016_023084_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction runs between office buildings, with a fenced median separating a side roadway; the asphalt is dry and traffic is moderate. A white box truck ahead in the ego lane slows as another vehicle changes lanes in front of it, briefly constraining the ego car's pace. A yellow taxi to the front left continues in the adjacent lane alongside, limiting options to move left. On the separated side road to the right, utility trucks and a small crane are parked but remain outside the travel lane. Pavement arrows show the right lane merges left into the ego lane.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane because of another vehicle changing lane. You should slow down to maintain a safe distance and avoid abrupt braking."}
{"id": "train_02031", "split": "train", "clip_key": "titan_clip_448_000192_movie", "source": {"subset": "titan", "scenario": "clip_448", "frame": "000192"}, "frames": ["titan_clip_448_000192_movie_t-3.jpg", "titan_clip_448_000192_movie_t-2.jpg", "titan_clip_448_000192_movie_t-1.jpg", "titan_clip_448_000192_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with a single narrow lane and no median; the block-paved surface appears in good condition. Traffic is light at low speed through a shared vehicle-pedestrian space. On the left edge near the shopfront, a pedestrian in a black shirt and gray pants walks toward the camera along the curb and may step into the ego lane. A white van stands stopped along the right curb slightly protruding into the lane, narrowing the passage for the ego vehicle. Far ahead in the lane, several pedestrians move along and across the roadway, potentially slowing the approach.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and gray pants, and walking towards the ego car, on the left side of the road. The pedestrian may step onto the roadway unexpectedly, so the driver should manoeuvre around them."}
{"id": "train_02032", "split": "train", "clip_key": "titan_clip_1353_000102_movie", "source": {"subset": "titan", "scenario": "clip_1353", "frame": "000102"}, "frames": ["titan_clip_1353_000102_movie_t-3.jpg", "titan_clip_1353_000102_movie_t-2.jpg", "titan_clip_1353_000102_movie_t-1.jpg", "titan_clip_1353_000102_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "An urban two-way street with one lane per direction curves gently right, lined by trees and guardrails, with smooth pavement and light traffic. A painted centerline separates directions and nothing else changes notably over time. A small silver minivan ahead in the ego lane proceeds steadily and eases off slightly into the bend, setting the ego vehicle's pace. A white van is parked along the left curb for unloading, remaining stationary and narrowing the margin of the ego lane as the car draws alongside. No notable signals or speed signs are prominent.", "hazard_reasoning": "There is a white van parked on the left side of the road, because it is being unloaded. Since unloading may involve people or cargo entering the roadway, the driver should carefully manoeuvre around the parked vehicle."}
{"id": "train_02033", "split": "train", "clip_key": "2020-0227-153144_003440_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "003440"}, "frames": ["2020-0227-153144_003440_movie_t-3.jpg", "2020-0227-153144_003440_movie_t-2.jpg", "2020-0227-153144_003440_movie_t-1.jpg", "2020-0227-153144_003440_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop promptly to avoid a collision.", "environment_perception": "An urban arterial with at least two lanes in the same direction has smooth pavement and heavy, stop-and-go flow, with no visible center median. A silver sedan directly ahead in the ego lane is stopped in a queue because of traffic congestion and blocks the ego vehicle. To the left, a light blue minivan in the adjacent same-direction lane creeps forward beside the sedan as the lines inch ahead. Farther ahead, several white vans and cars remain tightly packed and move intermittently, setting the pace. No oncoming traffic is visible, and no clearly readable traffic signals or speed signs stand out.", "hazard_reasoning": "A silver sedan is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop promptly to avoid a collision with the stationary vehicle under slowing traffic conditions."}
{"id": "train_02034", "split": "train", "clip_key": "titan_clip_1278_000510_movie", "source": {"subset": "titan", "scenario": "clip_1278", "frame": "000510"}, "frames": ["titan_clip_1278_000510_movie_t-3.jpg", "titan_clip_1278_000510_movie_t-2.jpg", "titan_clip_1278_000510_movie_t-1.jpg", "titan_clip_1278_000510_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "A narrow urban street without lane markings or a median runs between buildings, the pavement is smooth, and motor traffic is light while pedestrian activity is heavy. Several pedestrians are ahead in the roadway, some crossing from right to left and others walking in the same direction near the center, so the ego vehicle proceeds slowly behind them. On the near right, a pedestrian in a blue T-shirt and gray pants walks away from the ego car along the edge because there is no sidewalk. A small group stands by shopfronts on the right, with one person stepping toward the lane and possibly entering the ego path. Parked bicycles and carts line the left side, slightly narrowing the available space.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt and gray pants, walking on the right side of the road, away from the ego car, because there is no sidewalk. The driver should carefully manoeuvre around the pedestrian to avoid collision."}
{"id": "train_02035", "split": "train", "clip_key": "2020-0205-103411_010724_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "010724"}, "frames": ["2020-0205-103411_010724_movie_t-3.jpg", "2020-0205-103411_010724_movie_t-2.jpg", "2020-0205-103411_010724_movie_t-1.jpg", "2020-0205-103411_010724_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with multiple lanes in each direction runs straight between mid-rise buildings, with no physical median, smooth asphalt, and light traffic; the ego vehicle travels in the left-side carriageway. A pedestrian ahead near the road center walks rightward across the lanes and may enter the ego path. Several oncoming cars proceed steadily in the far lanes of the opposite side, remaining distant. On the right curb at a bus stop shelter, a few pedestrians wait behind the guardrail without stepping into the roadway. The number 40 is painted on the surface indicating the posted speed, and the near-right lane is marked for a right turn.", "hazard_reasoning": "No immediate hazards are present, and the road ahead is clear; maintain current speed to proceed safely."}
{"id": "train_02036", "split": "train", "clip_key": "titan_clip_212_000036_movie", "source": {"subset": "titan", "scenario": "clip_212", "frame": "000036"}, "frames": ["titan_clip_212_000036_movie_t-3.jpg", "titan_clip_212_000036_movie_t-2.jpg", "titan_clip_212_000036_movie_t-1.jpg", "titan_clip_212_000036_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead.", "environment_perception": "A narrow urban back street with midrise buildings and shopfronts forms a single undivided lane with dry, intact pavement and light traffic. Ahead in the ego lane, a white box delivery truck occupies most of the roadway, so the ego vehicle follows behind it. On the right side, a pedestrian wearing a white shirt and black pants walks away from the ego car along the roadside. A round no-parking sign stands on a pole to the left, and utility poles and storefront items line the edges of the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the right side of the road, away from the ego car. The driver should be cautious because the pedestrian may suddenly move into the travel lane."}
{"id": "train_02037", "split": "train", "clip_key": "titan_clip_1291_000168_movie", "source": {"subset": "titan", "scenario": "clip_1291", "frame": "000168"}, "frames": ["titan_clip_1291_000168_movie_t-3.jpg", "titan_clip_1291_000168_movie_t-2.jpg", "titan_clip_1291_000168_movie_t-1.jpg", "titan_clip_1291_000168_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging van", "environment_perception": "An urban two-way street with one lane each direction and a solid yellow centerline curves gently right; the pavement looks smooth and traffic is light. Ahead near the center of our path, a black van turns into the right lane, angling rightward and slowing as it crosses in front. Farther ahead in the same direction, a white van proceeds straight and pulls away. A pedestrian stands on the left sidewalk by an apartment entrance and does not enter the road.", "hazard_reasoning": "There is a black van turning into the right lane. This merging maneuver may cross into your lane, so maintain awareness to avoid a collision."}
{"id": "train_02038", "split": "train", "clip_key": "2020-0207-151349_075995_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "075995"}, "frames": ["2020-0207-151349_075995_movie_t-3.jpg", "2020-0207-151349_075995_movie_t-2.jpg", "2020-0207-151349_075995_movie_t-1.jpg", "2020-0207-151349_075995_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with same-direction traffic runs under an elevated expressway; the pavement is dry, a guardrail lines the right edge, and traffic is heavy and mostly stopped. A gray dump truck directly ahead in the ego lane is stopped because of congestion ahead, blocking the ego vehicle. In the lane to the left, a white van slightly ahead crawls forward with a dark sedan behind it, limiting easy overtaking. On the left sidewalk, a crowd of pedestrians waits near a building but stays behind the curb.", "hazard_reasoning": "There is a gray truck stopped in the ego lane because of traffic congestion ahead. The truck ahead is halted, so the driver must stop to maintain a safe following distance and prevent a collision."}
{"id": "train_02039", "split": "train", "clip_key": "2020-0127-132751_104395_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "104395"}, "frames": ["2020-0127-132751_104395_movie_t-3.jpg", "2020-0127-132751_104395_movie_t-2.jpg", "2020-0127-132751_104395_movie_t-1.jpg", "2020-0127-132751_104395_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately for the pedestrian", "environment_perception": "An urban two-lane, two-way street with a painted yellow median and dry, slightly worn pavement runs past shops, and traffic is light and slow. A silver van directly ahead in the ego lane shows brake lights and pauses, constraining the ego vehicle. To the right front, a pedestrian carrying a handbag crosses the street toward the left in front of the ego car, stepping through the ego lane and prompting the slowdown. An oncoming dark car travels past in the opposite lane without interaction. No salient signals are visible, and the roadside has a curb and guardrail with no additional hazards.", "hazard_reasoning": "There is a pedestrian carrying a handbag and crossing the street, in front of the ego car and walking towards the left. The driver must stop because the pedestrian is directly in the vehicle's path and could be struck if the vehicle continues moving."}
{"id": "train_02040", "split": "train", "clip_key": "2020-0228-150133_003330_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "003330"}, "frames": ["2020-0228-150133_003330_movie_t-3.jpg", "2020-0228-150133_003330_movie_t-2.jpg", "2020-0228-150133_003330_movie_t-1.jpg", "2020-0228-150133_003330_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with two same-direction lanes and no median has dry pavement and light to moderate flow. A white box truck ahead moves from the left lane into the ego lane as the left lane ends. A woman at the left crosswalk begins crossing toward the right through the ego lane. Several bicyclists travel ahead along the right curb, continuing straight while keeping to the edge.", "hazard_reasoning": "There is a white truck changing lanes, moving from the left lane to the ego-car lane, because the left lane ends. The truck's unexpected merge into your lane could require reducing speed to maintain safe following distance."}
{"id": "train_02041", "split": "train", "clip_key": "titan_clip_445_000426_movie", "source": {"subset": "titan", "scenario": "clip_445", "frame": "000426"}, "frames": ["titan_clip_445_000426_movie_t-3.jpg", "titan_clip_445_000426_movie_t-2.jpg", "titan_clip_445_000426_movie_t-1.jpg", "titan_clip_445_000426_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the important object", "environment_perception": "An urban commercial street with a single narrow lane and block-paved surface rises slightly, with no centerline or median and light traffic; shopfronts line both sides and sun glare reduces contrast ahead. On the left edge near the ego, a pedestrian wearing a white shirt and black pants walks away along the curb, staying in the roadway. Ahead to the right, a white box truck stands stopped at the curb and partly in the lane, with a person standing at its rear, which constrains the available path. Farther ahead near the middle, another pedestrian walks uphill away close to the vehicle path by the truck. Orange cones line the left sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the left side of the road, away from the ego car. The driver should manoeuvre around the important object to maintain a safe distance, as the pedestrian may unexpectedly step into the lane with limited visibility due to the parked truck."}
{"id": "train_02042", "split": "train", "clip_key": "2020-0205-103411_111299_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "111299"}, "frames": ["2020-0205-103411_111299_movie_t-3.jpg", "2020-0205-103411_111299_movie_t-2.jpg", "2020-0205-103411_111299_movie_t-1.jpg", "2020-0205-103411_111299_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for the red light ahead", "environment_perception": "An urban multi-lane arterial with coarse asphalt runs straight toward an intersection, with no median visible and traffic moving slowly and then stopping. Overall flow is heavy near the light. A white van directly ahead in the ego lane is stopped at the intersection as the overhead traffic signal shows red, holding the ego vehicle. In the right adjacent lane, a white hatchback alongside to slightly ahead slows to a stop parallel to the ego and may reaccelerate with the signal. In the left adjacent lane, a black minivan slightly ahead also queues at the red light, limiting any chance to pass. Overhead blue direction signs span the roadway before the intersection.", "hazard_reasoning": "A white van is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to avoid colliding with the stationary vehicle at the red traffic light."}
{"id": "train_02043", "split": "train", "clip_key": "2020-0213-143552_062810_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "062810"}, "frames": ["2020-0213-143552_062810_movie_t-3.jpg", "2020-0213-143552_062810_movie_t-2.jpg", "2020-0213-143552_062810_movie_t-1.jpg", "2020-0213-143552_062810_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs straight, bordered by a low shrub median; the pavement looks dry and traffic flows at a moderate, steady pace. Directly ahead in the ego lane, a black van pulls away from the ego car because the road in front of it is clear. In the adjacent left lane, a blue hatchback slightly ahead continues straight at a similar speed, holding its lane. Farther ahead in that lane, a short line of cars proceeds steadily. Across the median to the right, an oncoming white truck and other vehicles travel the opposite way.", "hazard_reasoning": "There is a black van driving away from the ego car, in the ego lane, because the road ahead is clear, in front of the van. The parked white truck on the right partially blocks the sidewalk, hiding potential pedestrians who might step onto the road, so following the vehicle ahead helps maintain a safe distance and better visibility."}
{"id": "train_02044", "split": "train", "clip_key": "2020-0212-102546_053243_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "053243"}, "frames": ["2020-0212-102546_053243_movie_t-3.jpg", "2020-0212-102546_053243_movie_t-2.jpg", "2020-0212-102546_053243_movie_t-1.jpg", "2020-0212-102546_053243_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a narrow raised median and smooth pavement carries moderate traffic as the view approaches a signalized intersection and zebra crossing. A white van ahead in the ego lane drives away from the camera, moving steadily and setting the pace. To the left of the ego lane, a large green-and-white city bus travels nearly parallel, easing forward beside the ego path. On the right, opposite-direction lanes hold several oncoming cars queued near the median, separated from the ego direction. No pedestrians or obstacles are visible.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. This indicates the traffic light has changed and you should follow the vehicle ahead to pass safely."}
{"id": "train_02045", "split": "train", "clip_key": "2020-0228-102841_006375_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "006375"}, "frames": ["2020-0228-102841_006375_movie_t-3.jpg", "2020-0228-102841_006375_movie_t-2.jpg", "2020-0228-102841_006375_movie_t-1.jpg", "2020-0228-102841_006375_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way boulevard with good pavement runs between mid-rise buildings, with temporary barricades forming a central median; traffic is moderate and begins moving through the junction. Ahead in the ego lane a black van has just started rolling from a stop as the light turns green, and it leads the ego vehicle. In the lane to the right a white car proceeds forward at a similar pace slightly ahead, remaining in its lane. Farther right, beyond the barricades, oncoming vehicles travel steadily in their lanes. A green signal is visible ahead. Roadside parking lines the left curb with several vans, and a work zone with orange barriers narrows the right side near the curb while leaving the ego lane clear.", "hazard_reasoning": "There is a black van stopped and just starting to move in the ego lane because the light turned green. The driver should slow down to maintain a safe following distance and be prepared for the van's unpredictable start."}
{"id": "train_02046", "split": "train", "clip_key": "2020-0207-151349_016588_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "016588"}, "frames": ["2020-0207-151349_016588_movie_t-3.jpg", "2020-0207-151349_016588_movie_t-2.jpg", "2020-0207-151349_016588_movie_t-1.jpg", "2020-0207-151349_016588_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth asphalt and a red-painted curb lane carries moderate, steadily moving traffic toward a signalized intersection. Guardrails line the right edge, and the flow proceeds under green lights. A white van directly ahead in the ego lane continues straight through the green signal and sets the ego car's pace. Farther ahead in the same lane, a box truck moves away through the junction, drawing the platoon forward and partially obscuring the view. In the adjacent right lane, a white SUV travels slightly ahead and maintains its lane while passing the ego vehicle without merging.", "hazard_reasoning": "There is a white van driving in the ego lane, in front of the ego car, because of green traffic lights. The green light could change soon, so maintaining awareness of the van's movement will help anticipate signal changes and maintain a safe following distance."}
{"id": "train_02047", "split": "train", "clip_key": "2020-0225-145150_000462_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "000462"}, "frames": ["2020-0225-145150_000462_movie_t-3.jpg", "2020-0225-145150_000462_movie_t-2.jpg", "2020-0225-145150_000462_movie_t-1.jpg", "2020-0225-145150_000462_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street lined with shops features two narrow lanes divided by double yellow lines, smooth pavement, and light, steady traffic. Ahead in the ego lane, a cyclist in a black shirt and black pants rides near the centerline in the middle of the road because a vehicle is parked along the left curb, so the rider takes the lane and slows the ego's approach. An oncoming white van approaches through the zebra crossing in the opposite lane, continuing straight and preventing an overtake. Pedestrians move along both sidewalks, with a few on the right standing at the curb near the crosswalk. A pedestrian crossing sign is mounted above the crosswalk.", "hazard_reasoning": "There is a cyclist wearing a black shirt and black pants and cycling in the middle of the road because of a parked vehicle. The driver should carefully manoeuvre around the cyclist to avoid collision, as the cyclist has moved into the driving lane by necessity."}
{"id": "train_02048", "split": "train", "clip_key": "titan_clip_533_000144_movie", "source": {"subset": "titan", "scenario": "clip_533", "frame": "000144"}, "frames": ["titan_clip_533_000144_movie_t-3.jpg", "titan_clip_533_000144_movie_t-2.jpg", "titan_clip_533_000144_movie_t-1.jpg", "titan_clip_533_000144_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked SUV", "environment_perception": "A narrow urban street with buildings close to the curb has smooth pavement and no visible centerline, and traffic flow is light. On the left side of the ego lane, a black SUV is parked with its right-side rear door open, narrowing the usable lane and constraining the ego vehicle's path. Far ahead in the same direction, a small blue truck proceeds slowly through the pinch point and continues ahead, setting the pace for following traffic. Pedestrians walk along the sidewalks on both sides without stepping into the roadway.", "hazard_reasoning": "A black SUV is parked on the left side of the lane. The parked SUV obstructs the lane and reduces visibility, so you should manoeuvre carefully around it."}
{"id": "train_02049", "split": "train", "clip_key": "2020-0213-143552_048058_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "048058"}, "frames": ["2020-0213-143552_048058_movie_t-3.jpg", "2020-0213-143552_048058_movie_t-2.jpg", "2020-0213-143552_048058_movie_t-1.jpg", "2020-0213-143552_048058_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between buildings, separated from oncoming traffic by a planted median; the pavement is smooth and traffic is moderate, moving through a signalized junction. A white box truck directly ahead in the ego lane accelerates away because the traffic light ahead is green, setting the ego car's pace. A small white van slightly ahead to the left proceeds through the intersection in the adjacent lane, moving parallel and limiting room for a lane change. On the opposite side of the median, an oncoming white car passes through the junction without interacting. A pedestrian overpass spans the road above.", "hazard_reasoning": "There is a white truck accelerating in front of the ego car, in the ego lane, because of a green traffic light. Since the light may change soon, the driver should accelerate to clear the intersection before it turns yellow."}
{"id": "train_02050", "split": "train", "clip_key": "2020-0228-150133_017573_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "017573"}, "frames": ["2020-0228-150133_017573_movie_t-3.jpg", "2020-0228-150133_017573_movie_t-2.jpg", "2020-0228-150133_017573_movie_t-1.jpg", "2020-0228-150133_017573_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-way road with one lane each direction runs between shops and apartments, separated by a yellow centerline, the pavement dry and intact, and traffic in the ego lane is queued and stopped. A gray van directly ahead in the ego lane is halted for a red traffic signal, constraining the ego car's movement. Farther ahead in the same lane, a large bus or truck also waits at the signal, extending the queue. On the right at a side-street crosswalk, a pedestrian walks along the curb and does not enter the main roadway. A 40 km/h speed limit sign and a no-parking sign are visible on the left.", "hazard_reasoning": "There is a gray van stopped in the ego lane, in front of the ego car, because of red traffic lights. The driver should stop to avoid colliding with the halted van and obey the red signal."}
{"id": "train_02051", "split": "train", "clip_key": "2020-0203-154554_073680_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_073680_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_073680_movie_t-3_augB1.jpg", "2020-0203-154554_073680_movie_t-2_augB1.jpg", "2020-0203-154554_073680_movie_t-1_augB1.jpg", "2020-0203-154554_073680_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with multiple lanes and a hatched divider is seen, the pavement dry and slightly rough as traffic moves slowly toward a junction. A black motorcycle ahead in the ego lane slows directly in front of the camera car, setting the pace. A beige mini-van farther ahead in the same lane also decelerates near the junction, further constraining the ego vehicle. A red hatchback just ahead in the adjacent right lane continues straight at a similar speed, staying parallel without encroaching. Several cars and vans approach in the opposite lanes on the right, flowing steadily through the intersection without interacting. Parked vehicles line the left curb, and low sun ahead creates glare that reduces contrast.", "hazard_reasoning": "There is a black motorcycle slowing in the ego lane, in front of the ego car. The motorcycle's deceleration poses a sudden hazard, so the driver should slow down to maintain a safe following distance."}
{"id": "train_02052", "split": "train", "clip_key": "2020-0220-151845_000149_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "000149"}, "frames": ["2020-0220-151845_000149_movie_t-3.jpg", "2020-0220-151845_000149_movie_t-2.jpg", "2020-0220-151845_000149_movie_t-1.jpg", "2020-0220-151845_000149_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way street lined with mid-rise buildings has dry, smooth pavement and painted lane lines but no physical median; traffic is moderate. Ahead in the ego lane, a silver minivan slows as a bus farther ahead decelerates near the curb, constraining the ego car's speed. On the right side of the roadway, a yellow taxi and a white truck approach as oncoming traffic in their lanes, remaining separated from the ego path by lane markings. Farther right, another van cruises toward the camera in the oncoming curb lane. Pedestrians on the left sidewalk walk along behind a guardrail and stay clear of the road.", "hazard_reasoning": "There is a silver minivan slowing in front of the ego car, in the ego lane, because of a bus slowing ahead. The minivan's abrupt deceleration may require sudden braking, so the driver should slow down to maintain a safe following distance."}
{"id": "train_02053", "split": "train", "clip_key": "2020-0207-101955_122861_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "122861"}, "frames": ["2020-0207-101955_122861_movie_t-3.jpg", "2020-0207-101955_122861_movie_t-2.jpg", "2020-0207-101955_122861_movie_t-1.jpg", "2020-0207-101955_122861_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial runs under an elevated expressway, bounded by a curbside shoulder on the right; the pavement is dry and traffic is heavy and mostly stopped. Directly ahead in the ego lane, a white van is stopped near the curb, blocking the lane and constraining the ego's pace. Ahead to the left, a pink garbage truck in the adjacent lane inches forward with the queue. Farther ahead in the middle lane, a large box truck waits in traffic, holding vehicles behind it. Overpass pillars line the right edge, reducing lateral space but revealing no other hazards.", "hazard_reasoning": "There is a white van stopped in front of the ego car. The driver must stop to avoid rear-ending the stationary vehicle."}
{"id": "train_02054", "split": "train", "clip_key": "titan_clip_1012_000522_movie", "source": {"subset": "titan", "scenario": "clip_1012", "frame": "000522"}, "frames": ["titan_clip_1012_000522_movie_t-3.jpg", "titan_clip_1012_000522_movie_t-2.jpg", "titan_clip_1012_000522_movie_t-1.jpg", "titan_clip_1012_000522_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane and metal railings lines both sides; the pavement is smooth and vehicular traffic is light as the car approaches a small intersection. Ahead in the lane, a pedestrian in dark clothing walks away near the center of the roadway, constraining the vehicle's pace. In the middle of the intersection, a pedestrian carrying a handbag, wearing blue pants and a white T-shirt, crosses from left to right toward the near-right side and could enter the vehicle's path. On the left sidewalk, several pedestrians move toward the corner beside the storefront but remain behind the railings. A yellow pedestrian warning sign is visible, and a blue direction sign stands near right-side construction barriers.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing blue pants and a white t-shirt, and crossing the street, in the middle of the intersection, to the right side. The pedestrian is entering the vehicle's path and may step unpredictably, so slow down to ensure you can stop safely."}
{"id": "train_02055", "split": "train", "clip_key": "titan_clip_170_000138_movie", "source": {"subset": "titan", "scenario": "clip_170", "frame": "000138"}, "frames": ["titan_clip_170_000138_movie_t-3.jpg", "titan_clip_170_000138_movie_t-2.jpg", "titan_clip_170_000138_movie_t-1.jpg", "titan_clip_170_000138_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrians crossing ahead", "environment_perception": "An urban two-way street lined with shops and an elevated structure on the right comes into view as the ego car approaches a zebra crossing; the pavement is dry and intact and traffic is light with no moving vehicles. Ahead, two pedestrians wearing gray shirts cross the road at the crosswalk away from the ego car, moving right to left across the ego path and constraining its approach. At the near-left corner, another pedestrian in dark clothing steps from the curb toward the crosswalk and edges into the lane near the ego's path. No traffic signals are visible, and no other road users or obstacles appear.", "hazard_reasoning": "There are two pedestrians wearing gray shirts, crossing the street at a pedestrian crossing, away from the ego car. The driver should be aware because pedestrians may move unpredictably and enter the vehicle's path."}
{"id": "train_02056", "split": "train", "clip_key": "2020-0228-102841_047594_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "047594"}, "frames": ["2020-0228-102841_047594_movie_t-3.jpg", "2020-0228-102841_047594_movie_t-2.jpg", "2020-0228-102841_047594_movie_t-1.jpg", "2020-0228-102841_047594_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial approaches a signalized intersection; the leftmost lane runs beside a guardrail, the pavement is dry, and traffic is stopped at the red light. A gray van is directly ahead in the ego lane, standing because the signal is red and holding the car's position. In the adjacent middle lane, a motorcyclist waits slightly ahead, stationary and aligned to continue straight. In the right lane, a white van stands a little farther forward, also waiting at the light.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, in the ego lane, because of a red traffic light. The gray van's stop indicates the driver must halt to avoid a rear-end collision and comply with the signal."}
{"id": "train_02057", "split": "train", "clip_key": "titan_clip_571_000324_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_571_000324_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_571_000324_movie_t-3_augB1.jpg", "titan_clip_571_000324_movie_t-2_augB1.jpg", "titan_clip_571_000324_movie_t-1_augB1.jpg", "titan_clip_571_000324_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian crossing the road", "environment_perception": "A narrow urban two-way street with smooth asphalt and no median runs between low-rise buildings, and traffic is light. The ego vehicle moves straight along the left side toward a small intersection. A black car ahead in the same direction slows near mid-block, constraining the ego vehicle's pace. A pedestrian from the right side steps into the roadway and crosses toward the left across the ego lane ahead. A bicyclist on the left sidewalk approaches the corner slowly and may enter the crosswalk near the ego's path. A blue straight-ahead-only sign stands on the left, and a white van is parked along the left curb near the camera.", "hazard_reasoning": "There is a pedestrian on the right side of the road, crossing the street to the left side of the road. The driver should be cautious because the pedestrian may step into the vehicle's path as it approaches the crossing."}
{"id": "train_02058", "split": "train", "clip_key": "titan_clip_466_000480_movie", "source": {"subset": "titan", "scenario": "clip_466", "frame": "000480"}, "frames": ["titan_clip_466_000480_movie_t-3.jpg", "titan_clip_466_000480_movie_t-2.jpg", "titan_clip_466_000480_movie_t-1.jpg", "titan_clip_466_000480_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "be aware of crossing pedestrian", "environment_perception": "An urban shopping street with a narrow single lane, brick-paved and lined by bollards and shopfronts, extends ahead; there is no centerline and no other vehicles, so traffic is light. A pedestrian in a white shirt carrying a handbag waits at the left curb to cross toward the right, close to the lane and may step out. Several pedestrians farther ahead walk along the middle of the lane in the same direction as the ego vehicle, occupying the path and constraining pace. On the left near-midground, a person with a rolling suitcase stands by the curb facing the roadway and may enter the lane. No traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and waiting to cross from the left side to the right side of the street. The driver should be aware of the pedestrian about to cross and prepare to slow down."}
{"id": "train_02059", "split": "train", "clip_key": "titan_clip_908_000174_movie", "source": {"subset": "titan", "scenario": "clip_908", "frame": "000174"}, "frames": ["titan_clip_908_000174_movie_t-3.jpg", "titan_clip_908_000174_movie_t-2.jpg", "titan_clip_908_000174_movie_t-1.jpg", "titan_clip_908_000174_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane street with no median and smooth pavement curves gently right, with orange-fenced roadworks narrowing the right edge; vehicle traffic is light while pedestrian activity is heavy. On the left beside the ego lane, a pedestrian in a blue shirt, black pants, and a white helmet walks away from the camera, directing traffic at the upcoming intersection. Ahead in the ego lane, two pedestrians cross from right to left, moving into the vehicle's path. Farther ahead, a larger group of pedestrians streams through the intersection, slowing the approach. A red no-entry sign faces a side street on the right.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, black pants, and a white helmet, and walking on the left side of the road, away from the ego car, because he is directing traffic in the intersection. He may step into your path unexpectedly while directing traffic, so slow down to avoid a collision."}
{"id": "train_02060", "split": "train", "clip_key": "titan_clip_161_000408_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_161_000408_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_161_000408_movie_t-3_augB1.jpg", "titan_clip_161_000408_movie_t-2_augB1.jpg", "titan_clip_161_000408_movie_t-1_augB1.jpg", "titan_clip_161_000408_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow two-way carriageway, no median, and smooth pavement; traffic is light but the lane is constricted by vehicles stopped along both curbs. Ahead in the middle of the ego lane, a pedestrian in a white shirt and black pants walks away from the ego vehicle, taking the center of the road because a parked truck occupies the left side of the lane. Along the left curb, a large box truck beside the ego car and another truck farther ahead remain stationary, narrowing the usable lane and constraining the ego vehicle's path. On the right shoulder ahead, a small white van is stopped near the sidewalk, further tightening the passage. No signals or speed signs are clearly visible.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, and walking in the middle of the road, away from the ego car, because of the parked vehicle on the left side. The driver should slow down to avoid a potential collision as the pedestrian may step into the vehicle's path unexpectedly."}
{"id": "train_02061", "split": "train", "clip_key": "2020-0129-105040_061398_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061398"}, "frames": ["2020-0129-105040_061398_movie_t-3.jpg", "2020-0129-105040_061398_movie_t-2.jpg", "2020-0129-105040_061398_movie_t-1.jpg", "2020-0129-105040_061398_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban neighborhood street has two narrow opposing lanes divided by double yellow lines with red edge strips; the pavement is dry and traffic is light with no vehicles ahead or oncoming. A man wearing sunglasses with a black jacket and pants walks along the left edge toward the ego car near the storefront, close to the lane and potentially entering the path. On the right, a pedestrian stands at the curb by a parking entrance under trees, close to the roadway. Farther ahead on the right sidewalk, another person walks away along the block. A large 20 is painted on the pavement as a speed marking, and a P parking sign is visible. Bicycles are parked along the left storefront, narrowing the margin.", "hazard_reasoning": "There is a man wearing sunglasses, a black jacket, and black pants and walking on the left side of the road, toward the ego car. The pedestrian is approaching the crossing and may step onto the roadway unexpectedly, so the driver should be cautious to avoid a potential collision."}
{"id": "train_02062", "split": "train", "clip_key": "titan_clip_740_000540_movie", "source": {"subset": "titan", "scenario": "clip_740", "frame": "000540"}, "frames": ["titan_clip_740_000540_movie_t-3.jpg", "titan_clip_740_000540_movie_t-2.jpg", "titan_clip_740_000540_movie_t-1.jpg", "titan_clip_740_000540_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban alley lined with shops forms a single narrow lane with no divider and worn asphalt, and traffic is very light with no cars present. A man in a black T-shirt and gray pants walks ahead along the right side away from the ego car, keeping to the edge. A cyclist ahead slightly right rides away in the lane and occupies the path, constraining the ego vehicle's pace. A pedestrian on the left foreground walks toward the camera along the curb and passes close to the lane. Signboards and a parked bicycle by the right storefront further narrow the usable roadway.", "hazard_reasoning": "There is a man wearing a black T-shirt and gray pants and walking on the right side of the road, away from the ego car. The pedestrian may step off the curb unexpectedly into the lane, so you should slow down to maintain a safe distance and avoid collision."}
{"id": "train_02063", "split": "train", "clip_key": "2020-0220-102630_113576_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "113576"}, "frames": ["2020-0220-102630_113576_movie_t-3.jpg", "2020-0220-102630_113576_movie_t-2.jpg", "2020-0220-102630_113576_movie_t-1.jpg", "2020-0220-102630_113576_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one lane per direction, a painted centerline, and smooth pavement shows light traffic as the ego car proceeds in the left lane past closely spaced buildings. Ahead in the ego lane near the left curb, a red motorcycle is stopped, occupying the lane and potentially blocking the path. Farther ahead in the same lane, a black hatchback moves slowly with a short gap to the motorcycle, constraining the ego vehicle's pace. The oncoming lane to the right is mostly clear. A road-work warning sign stands on the left shoulder, and a white utility truck is parked along the right curb.", "hazard_reasoning": "There is a red motorcycle stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The stopped motorcycle indicates slow or halted traffic ahead, so the driver must stop to avoid a rear-end collision under these circumstances."}
{"id": "train_02064", "split": "train", "clip_key": "2020-0214-145407_028577_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "028577"}, "frames": ["2020-0214-145407_028577_movie_t-3.jpg", "2020-0214-145407_028577_movie_t-2.jpg", "2020-0214-145407_028577_movie_t-1.jpg", "2020-0214-145407_028577_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light", "environment_perception": "An urban multi-lane arterial runs through a high-rise district with smooth pavement and painted lane dividers; traffic is heavy and queued near a signalized intersection. Directly ahead in the ego lane, a silver sedan is stopped for a red traffic light, holding the ego vehicle in line. To the left, a row of SUVs and trucks in the adjacent lane also waits or creeps forward. On the right, a separate right-turn lane carries a few cars that continue past the queue toward the turn without entering the ego path. The overhead signal ahead is red for the through lanes. No pedestrians or cyclists are visible, and there are no obstacles besides the standing traffic.", "hazard_reasoning": "There is a silver sedan stopped in the ego lane, because of a red traffic light. The driver should stop at the red light to avoid colliding with the stationary vehicle and comply with traffic signals."}
{"id": "train_02065", "split": "train", "clip_key": "2020-0127-132751_026811_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "026811"}, "frames": ["2020-0127-132751_026811_movie_t-3.jpg", "2020-0127-132751_026811_movie_t-2.jpg", "2020-0127-132751_026811_movie_t-1.jpg", "2020-0127-132751_026811_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane intersection under an elevated roadway comes into view, with smooth pavement and marked crosswalks as moderate traffic flows and bunches slightly at the junction. A small white car directly ahead in the ego lane rolls forward cautiously toward the intersection, setting the ego vehicle's pace. Ahead-left, a white hatchback turns left in the middle of the intersection on a green signal and moves away from the ego car. To the right front, a box truck proceeds through the junction in a neighboring lane and stays clear of the ego path. A pedestrian on the left sidewalk walks past the corner near the crosswalk, and traffic lights hang over the junction.", "hazard_reasoning": "There is a white hatchback turning left in the middle of the intersection, away from the ego car, because of a green traffic light. This maneuver could encroach on the ego-vehicle's path, so the driver should reduce speed to maintain a safe distance and avoid a potential collision."}
{"id": "train_02066", "split": "train", "clip_key": "2020-0131-135401_011715_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "011715"}, "frames": ["2020-0131-135401_011715_movie_t-3.jpg", "2020-0131-135401_011715_movie_t-2.jpg", "2020-0131-135401_011715_movie_t-1.jpg", "2020-0131-135401_011715_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear collision", "environment_perception": "An urban two-way street with one lane per direction and a solid yellow centerline leads to a signalized intersection; the pavement is dry and traffic is light. A silver dump truck loaded with soil stands directly ahead in the ego lane, stopped at the red signal and holding the ego vehicle. In the oncoming lane to the right, a black sedan and other cars proceed through the junction, moving past the intersection without stopping. A pedestrian on the far right crosses the intersection from right to left ahead of the stopped traffic. A bicycle lane runs along the left curb.", "hazard_reasoning": "There is a silver truck filled with soil, stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid rear-ending the halted vehicle at the red signal."}
{"id": "train_02067", "split": "train", "clip_key": "2020-0210-142719_000165_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "000165"}, "frames": ["2020-0210-142719_000165_movie_t-3.jpg", "2020-0210-142719_000165_movie_t-2.jpg", "2020-0210-142719_000165_movie_t-1.jpg", "2020-0210-142719_000165_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van", "environment_perception": "An urban multi-lane road passes under an overpass with smooth pavement and moderate city traffic approaching a signalized intersection; lanes are not divided by a physical median. On the left, several vehicles stand in the curbside lane, and there is a white van parked in the left lane beside the ego, forcing a merge right into the through lane. Ahead in the through lane, a small white car travels slowly toward the crosswalk, limiting speed. To the right, a beige minivan overtakes and continues ahead in the adjacent lane, briefly competing for space as the ego merges. A traffic signal is visible at the intersection ahead.", "hazard_reasoning": "There is a white van parked in the left lane. Driver should carefully manoeuvre around the obstruction to avoid collision with the parked vehicle blocking the lane."}
{"id": "train_02068", "split": "train", "clip_key": "2020-0213-143552_009549_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009549"}, "frames": ["2020-0213-143552_009549_movie_t-3.jpg", "2020-0213-143552_009549_movie_t-2.jpg", "2020-0213-143552_009549_movie_t-1.jpg", "2020-0213-143552_009549_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around roadwork area", "environment_perception": "An urban two-way street with one lane each direction runs between mid-rise buildings, the ego vehicle traveling in the left lane on smooth pavement with light, slow-moving traffic near roadworks. A dark hatchback ahead in the ego lane proceeds cautiously past cones and narrowing space, setting the pace. Slightly farther ahead and right, a scooter moves left around the work area and may enter the ego lane as it passes the cones. In the oncoming lane, a work truck stands by the construction site with barriers and personnel, shaping traffic on both sides. Cones and a temporary sign mark the center line, and a traffic cone sits on the right side of the lane because of construction on the right side of the road, creating a brief chicane.", "hazard_reasoning": "There is a traffic one on the right side of the lane because of construction on the right side of the road. The cones and barriers narrow the driving lane, so the driver should manoeuvre carefully around the work zone to avoid a collision."}
{"id": "train_02069", "split": "train", "clip_key": "2020-0213-143552_047327_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "047327"}, "frames": ["2020-0213-143552_047327_movie_t-3.jpg", "2020-0213-143552_047327_movie_t-2.jpg", "2020-0213-143552_047327_movie_t-1.jpg", "2020-0213-143552_047327_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with a single lane in the ego direction runs between midrise buildings, divided from the opposite side by a hedge median; the pavement is smooth and overall traffic is light and slow. Ahead, a white box truck in the ego lane shows brake lights and slows due to congestion ahead, constraining the ego vehicle's pace. On the left at a bus stop, two pedestrians wait on the sidewalk and remain clear of the roadway. No other moving vehicles are close by.", "hazard_reasoning": "There's a white truck, with brake lights on, slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a collision due to the reduced speed from congestion."}
{"id": "train_02070", "split": "train", "clip_key": "2020-0212-102546_002235_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "002235"}, "frames": ["2020-0212-102546_002235_movie_t-3.jpg", "2020-0212-102546_002235_movie_t-2.jpg", "2020-0212-102546_002235_movie_t-1.jpg", "2020-0212-102546_002235_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection on a two-way road without a median comes into view; the pavement is smooth and traffic is moderate. Ahead in the ego lane, a white van is stopped at the intersection waiting to make a right turn, so it blocks the ego vehicle until a gap opens. In the oncoming lanes, two cars travel straight through the junction toward the camera, keeping the turner waiting. On the left sidewalk, a cyclist and several pedestrians stand by the crosswalk without entering the road.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because it is waiting to make a right turn. The stopped van poses a risk of collision if the driver does not stop to allow the turn."}
{"id": "train_02071", "split": "train", "clip_key": "2020-0227-153144_013174_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "013174"}, "frames": ["2020-0227-153144_013174_movie_t-3.jpg", "2020-0227-153144_013174_movie_t-2.jpg", "2020-0227-153144_013174_movie_t-1.jpg", "2020-0227-153144_013174_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road with two same-direction lanes runs past mid-rise buildings, with a curb and planter on the left; the pavement is smooth and traffic is queued at a signal. A black van directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the adjacent right lane, a white van slightly ahead also waits at the intersection, constraining progress. On the left sidewalk, a cyclist moves toward the corner near the crosswalk but stays off the roadway.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to avoid colliding with the stationary vehicle at the red light."}
{"id": "train_02072", "split": "train", "clip_key": "titan_clip_726_000288_movie", "source": {"subset": "titan", "scenario": "clip_726", "frame": "000288"}, "frames": ["titan_clip_726_000288_movie_t-3.jpg", "titan_clip_726_000288_movie_t-2.jpg", "titan_clip_726_000288_movie_t-1.jpg", "titan_clip_726_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "An urban intersection on a single-lane two-way road without a median comes into view as the ego-vehicle approaches a zebra crossing; the pavement is smooth and traffic is light. Ahead in the crosswalk, a pedestrian wearing a blue shirt and black pants with a backpack walks from the right side to the left side of the road, occupying the ego path and controlling the pace. Another pedestrian ahead crosses from the left toward the right in the same crosswalk, still in front of the ego lane. On the right-side street, a white van waits at the corner beside the crosswalk, positioned to enter across the ego path after the crossing. An overhead traffic signal is visible at the corner.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, carrying a backpack, and crossing the street in a pedestrian crossing, from the right side, to the left side of the road. The driver should yield because the pedestrian is already on the crosswalk and poses a collision risk if not given priority."}
{"id": "train_02073", "split": "train", "clip_key": "2020-0213-143552_023395_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_023395_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_023395_movie_t-3_augB1.jpg", "2020-0213-143552_023395_movie_t-2_augB1.jpg", "2020-0213-143552_023395_movie_t-1_augB1.jpg", "2020-0213-143552_023395_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban multi-lane arterial with smooth pavement and a painted chevron divider to the right stretches ahead under clear daylight, and traffic flows at a moderate, steady pace. A black motorcycle just ahead on the left veers right and cuts into the ego lane, moving in front and likely constraining the car's pace. A covered box truck sits directly ahead in the ego lane traveling slowly, further limiting progress. A small white car in the lane to the left continues straight alongside without merging. An overhead sign shows straight arrows for the lanes, and a roadside P sign points to parking to the right. Pedestrians remain on the sidewalks behind railings.", "hazard_reasoning": "There is a black motorcycle cutting into the ego lane, from the left lane. The motorcycle's sudden lane change poses a collision risk, so the driver should slow down to maintain a safe following distance under this situation."}
{"id": "train_02074", "split": "train", "clip_key": "titan_clip_18_000174_movie", "source": {"subset": "titan", "scenario": "clip_18", "frame": "000174"}, "frames": ["titan_clip_18_000174_movie_t-3.jpg", "titan_clip_18_000174_movie_t-2.jpg", "titan_clip_18_000174_movie_t-1.jpg", "titan_clip_18_000174_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction approaches a signalized intersection; the pavement is dry and traffic across the junction is moderate, while the light facing the ego direction shows red. Ahead in the ego lane, a green sedan slows and begins a right turn at the intersection, constraining the ego vehicle's pace. A cyclist crosses the zebra crossing from right to left ahead, potentially passing in front of the turning car. Cross traffic, including a small red van, moves left to right through the junction. A 40 speed limit sign is posted on the signal pole.", "hazard_reasoning": "A green Sedan slowing down in the ego lane because it is taking a right turn in an intersection. This deceleration signals a potential rear-end collision risk, so the driver must reduce speed to maintain a safe following distance."}
{"id": "train_02075", "split": "train", "clip_key": "titan_clip_937_000108_movie", "source": {"subset": "titan", "scenario": "clip_937", "frame": "000108"}, "frames": ["titan_clip_937_000108_movie_t-3.jpg", "titan_clip_937_000108_movie_t-2.jpg", "titan_clip_937_000108_movie_t-1.jpg", "titan_clip_937_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential street is shown, a narrow two-way road without a centerline and with smooth asphalt and manhole covers; traffic is light and no vehicles are moving. Ahead on the left curb, a small truck is parked and slightly narrows the usable lane. On the right side, a pedestrian in a white shirt and brown pants stands by their parked vehicle attending to it, staying on the edge away from the ego lane. Several other parked scooters and carts sit along the curbs but do not obstruct the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and brown pants, standing on the right side of the road, away from the ego car, because they are attending their parked vehicle. They may step onto the roadway unexpectedly, so the driver should slow down to maintain a safe distance."}
{"id": "train_02076", "split": "train", "clip_key": "2020-0226-140503_101031_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-140503_101031_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-140503_101031_movie_t-3_augB1.jpg", "2020-0226-140503_101031_movie_t-2_augB1.jpg", "2020-0226-140503_101031_movie_t-1_augB1.jpg", "2020-0226-140503_101031_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way road with wide zebra crossings stretches through mid-rise buildings, the asphalt dry and in good condition, and traffic flows at a moderate pace. A white truck in the ego lane ahead slows through the intersection, constraining the ego car's speed. Farther ahead, a dark sedan continues straight in the adjacent same-direction lane at a steady pace without merging. On the opposite side, oncoming vehicles including a white van proceed through their lanes to the right of the center, remaining separate from the ego path.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's deceleration may force the driver to brake sharply, so slowing down helps maintain a safe following distance."}
{"id": "train_02077", "split": "train", "clip_key": "2020-0214-145407_023526_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "023526"}, "frames": ["2020-0214-145407_023526_movie_t-3.jpg", "2020-0214-145407_023526_movie_t-2.jpg", "2020-0214-145407_023526_movie_t-1.jpg", "2020-0214-145407_023526_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial with a planted median to the right and trees with a guardrail on the left stretches ahead; the pavement is dry and traffic is light. A brown truck directly ahead in the ego lane slows, so the ego vehicle follows at its pace. In the right lane farther ahead, a couple of white cars continue straight at steady speed in their lane. On the far right shoulder, a dark car is stopped beside a cone near the bushes, outside the travel lane. Overhead green direction signs span the roadway.", "hazard_reasoning": "There is a brown truck slowing in the ego lane, in front of the ego car. The truck's reduced speed could lead to a rear-end collision if the driver does not slow down promptly."}
{"id": "train_02078", "split": "train", "clip_key": "2020-0226-101332_061470_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "061470"}, "frames": ["2020-0226-101332_061470_movie_t-3.jpg", "2020-0226-101332_061470_movie_t-2.jpg", "2020-0226-101332_061470_movie_t-1.jpg", "2020-0226-101332_061470_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for stationary vehicle at red light", "environment_perception": "An urban arterial with three same-direction lanes approaches a signalized intersection; the pavement looks dry and traffic is heavy with a standing queue. A silver van directly ahead in the ego lane is stopped for a red light, holding the ego car. To the left, a line of vehicles including a white mini-van alongside and a red taxi farther ahead waits in the adjacent lane. In the right lane, a larger silver minibus slightly ahead also remains stopped with brake lights on. Overhead traffic signals show red.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop because the vehicle ahead is halted at a red light, and failure to decelerate could result in a rear-end collision."}
{"id": "train_02079", "split": "train", "clip_key": "2020-0204-103442_094419_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "094419"}, "frames": ["2020-0204-103442_094419_movie_t-3.jpg", "2020-0204-103442_094419_movie_t-2.jpg", "2020-0204-103442_094419_movie_t-1.jpg", "2020-0204-103442_094419_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the white van.", "environment_perception": "An urban arterial with two lanes in the ego direction and no physical median has dry, intact pavement; traffic is light to moderate and queues at a signal. A white van directly ahead in the ego lane is stopped for a red light, holding the ego car. To its left, a yellow hatchback slightly farther ahead waits in the adjacent lane for the same light. Behind the hatchback, a dark car in the left lane slows to join the queue. Overhead traffic signals show red above the intersection ahead.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of a red traffic light. You must stop to avoid a collision with the stationary vehicle when the light is red."}
{"id": "train_02080", "split": "train", "clip_key": "2020-0227-153144_005223_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "005223"}, "frames": ["2020-0227-153144_005223_movie_t-3.jpg", "2020-0227-153144_005223_movie_t-2.jpg", "2020-0227-153144_005223_movie_t-1.jpg", "2020-0227-153144_005223_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane two-way road has smooth pavement; same-direction traffic is heavy and queued, while oncoming flow to the right moves steadily. A silver sedan directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle. Several cars farther ahead in the same lane are also waiting and inch forward as the queue compresses. Oncoming cars continue straight through the intersection on the right side, not interacting with the ego lane. Overhead signals ahead show red for this approach. Parked vehicles line the left curb along the block.", "hazard_reasoning": "There is a silver sedan that has stopped in the ego lane because of a red traffic light, in front of the ego car. The driver should stop to avoid a rear-end collision with the halted vehicle at the red light."}
{"id": "train_02081", "split": "train", "clip_key": "2020-0217-110854_056660_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "056660"}, "frames": ["2020-0217-110854_056660_movie_t-3.jpg", "2020-0217-110854_056660_movie_t-2.jpg", "2020-0217-110854_056660_movie_t-1.jpg", "2020-0217-110854_056660_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to stopped van", "environment_perception": "An urban arterial runs under an elevated expressway with two same-direction lanes, a right-side guardrail, and smooth pavement. Traffic is heavy and slow, bunching to a stop at times. Directly ahead in the ego lane, a gray van is stopped, holding the ego vehicle because other vehicles are turning at an intersection further ahead. In the adjacent left lane, a boxy van and a white car creep forward side by side with the ego car, maintaining a slow queue. Beyond the guardrail on the right, another roadway carries visible traffic.", "hazard_reasoning": "There is a gray van stopped in front of the ego-car, in the ego lane, because of other vehicles turning ahead at the intersection. The gray van is stopped due to turning traffic at the intersection, so the driver must yield to avoid a rear-end collision."}
{"id": "train_02082", "split": "train", "clip_key": "titan_clip_1318_000456_movie", "source": {"subset": "titan", "scenario": "clip_1318", "frame": "000456"}, "frames": ["titan_clip_1318_000456_movie_t-3.jpg", "titan_clip_1318_000456_movie_t-2.jpg", "titan_clip_1318_000456_movie_t-1.jpg", "titan_clip_1318_000456_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A narrow urban two-way street with one lane each direction runs between shops and apartments, with bollards and narrow sidewalks but no median; the pavement is smooth and traffic is light as the road curves slightly left. On the right side, an oncoming cyclist wearing a blue shirt rides toward the car along the opposing lane near the curb, passing close to the center line. A pedestrian on the right sidewalk walks near the curb parallel to traffic and momentarily edges toward the roadway beside the ego lane. A large 30 marking on the pavement indicates the posted speed, and parked bicycles line both sidewalks.", "hazard_reasoning": "There is a person wearing a blue shirt and cycling, on the right side of the road, towards the ego-car. The cyclist may cross the vehicle's path unexpectedly, so you should carefully manoeuvre around them to avoid a collision."}
{"id": "train_02083", "split": "train", "clip_key": "2020-0228-102841_020430_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "020430"}, "frames": ["2020-0228-102841_020430_movie_t-3.jpg", "2020-0228-102841_020430_movie_t-2.jpg", "2020-0228-102841_020430_movie_t-1.jpg", "2020-0228-102841_020430_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road approaches a wide signalized intersection with no physical median and smooth dry pavement; traffic is light with a short queue at the stop line. Directly ahead in the ego lane, a black motorcycle is stopped because the signal ahead is red, holding the ego car behind. To the left, a white sedan in the adjacent lane rolls forward and stops beside the ego vehicle at the line. Several pedestrians wait on both sidewalks near the crosswalks, remaining clear of the roadway. The overhead traffic signal for the ego approach shows red.", "hazard_reasoning": "There is a black motorcycle stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. You need to stop to avoid rear-ending the stationary motorcycle at the red signal."}
{"id": "train_02084", "split": "train", "clip_key": "titan_clip_752_000438_movie", "source": {"subset": "titan", "scenario": "clip_752", "frame": "000438"}, "frames": ["titan_clip_752_000438_movie_t-3.jpg", "titan_clip_752_000438_movie_t-2.jpg", "titan_clip_752_000438_movie_t-1.jpg", "titan_clip_752_000438_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow street with a single, dividerless lane runs between buildings, with bollards separating sidewalks; pavement is smooth and traffic is very light with no vehicles ahead. A pedestrian in a white shirt and black pants crosses ahead from the left toward the right side of the road, moving through the ego vehicle's path and occupying it briefly. On the right sidewalk near the curb, a woman walks toward the camera beside the bollards, staying outside the lane. Farther ahead near the bright junction, a few pedestrians linger at the sidewalk edges but do not enter the roadway. A parked orange scooter sits on the right by a storefront.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, crossing to the right side of the road. The pedestrian is moving into the vehicle's path ahead, requiring reduced speed to ensure safe passage."}
{"id": "train_02085", "split": "train", "clip_key": "2020-0210-155354_035107_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "035107"}, "frames": ["2020-0210-155354_035107_movie_t-3.jpg", "2020-0210-155354_035107_movie_t-2.jpg", "2020-0210-155354_035107_movie_t-1.jpg", "2020-0210-155354_035107_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy traffic that is queued and largely stationary at a signal. The flow in the ego direction occupies several lanes without a visible median in view. Directly ahead in the ego lane, a black hatchback is stopped for a red light, holding the ego vehicle. In the lane to the left, a white van waits near the curb rail, remaining parallel to the ego path and contributing to the queue. In the lane to the right, a black sedan ahead-right slows and comes to a stop, limiting any right-side progress. Overhead blue direction signs are visible, and the traffic signal ahead shows red.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe distance and comply with the traffic signal."}
{"id": "train_02086", "split": "train", "clip_key": "2020-0227-104226_041800_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "041800"}, "frames": ["2020-0227-104226_041800_movie_t-3.jpg", "2020-0227-104226_041800_movie_t-2.jpg", "2020-0227-104226_041800_movie_t-1.jpg", "2020-0227-104226_041800_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop due to traffic congestion ahead", "environment_perception": "An urban two-way road with one lane each direction and a solid yellow centerline runs between mid-rise buildings; the pavement looks good and traffic is heavy with a slow queue in the left lane. A white hatchback is stopped directly ahead in the ego lane because congestion builds in front, constraining the ego car. Farther ahead in the same lane, a silver van and a small cargo truck creep forward in the queue, keeping speeds low. In the opposing lane to the right, a white truck approaches and passes, showing oncoming traffic moving more freely. Along the left curb near the camera, a small pickup is stopped, narrowing the margin but staying outside the travel path.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Stop due to traffic congestion ahead to avoid a rear-end collision."}
{"id": "train_02087", "split": "train", "clip_key": "2020-0203-114632_005252_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005252"}, "frames": ["2020-0203-114632_005252_movie_t-3.jpg", "2020-0203-114632_005252_movie_t-2.jpg", "2020-0203-114632_005252_movie_t-1.jpg", "2020-0203-114632_005252_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cones.", "environment_perception": "An urban two-way street with one lane in each direction and a central yellow divider passes between mid-rise buildings; the pavement is smooth and traffic is light but briefly constrained by roadworks. Orange traffic cones block the left lane because of construction, and a white work truck is parked ahead inside the coned area. A road worker stands near the center of the road waving a baton and directing vehicles past the closure, narrowing the usable path. In the opposite lane, an oncoming city bus slows near the curb as it approaches the constricted section.", "hazard_reasoning": "There are orange traffic cones blocking the left lane because of construction. The cones restrict the lane and present an obstacle that requires careful manoeuvring to pass safely."}
{"id": "train_02088", "split": "train", "clip_key": "titan_clip_444_000246_movie", "source": {"subset": "titan", "scenario": "clip_444", "frame": "000246"}, "frames": ["titan_clip_444_000246_movie_t-3.jpg", "titan_clip_444_000246_movie_t-2.jpg", "titan_clip_444_000246_movie_t-1.jpg", "titan_clip_444_000246_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban alley with a single shared lane and interlocking paver surface runs between shops, with wet patches and orange cones; traffic is light and the lane is partly constricted by roadside work on the right. A small construction truck is parked along the right curb ahead and protrudes into the lane, narrowing the passage. Next to it, a man in black trousers and a black shirt wearing a helmet stands in the ego lane spraying the truck with a hose, which blocks part of the lane and constrains the approach. Several pedestrians are present ahead; one woman crosses from right to left near the truck and may enter the ego path while others walk away along the centerline.", "hazard_reasoning": "There is a man wearing black trousers, a black shirt, and a helmet, standing in the ego lane because he spraying a truck with a hose. The driver should manoeuvre carefully around the pedestrian to avoid a collision and maintain safe clearance."}
{"id": "train_02089", "split": "train", "clip_key": "2020-0218-103119_005291_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "005291"}, "frames": ["2020-0218-103119_005291_movie_t-3.jpg", "2020-0218-103119_005291_movie_t-2.jpg", "2020-0218-103119_005291_movie_t-1.jpg", "2020-0218-103119_005291_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential street appears with a very narrow two-way carriageway; the ego faces a zebra crossing and a left-curving single lane with smooth pavement and a red textured strip, and traffic is absent. Two convex mirrors on a pole mark a blind side alley while the building on the right sits tight to the corner and limits sightlines. No pedestrians or moving vehicles are present in the roadway. Bicycles are parked along the left storefront. A small pile of rubble and a sign sit at the corner near the pole but remain outside the travel lane.", "hazard_reasoning": "No hazards are present in the scene, so no specific driver warning is necessary."}
{"id": "train_02090", "split": "train", "clip_key": "2020-0217-110854_044918_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "044918"}, "frames": ["2020-0217-110854_044918_movie_t-3.jpg", "2020-0217-110854_044918_movie_t-2.jpg", "2020-0217-110854_044918_movie_t-1.jpg", "2020-0217-110854_044918_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided roadway runs under an elevated expressway with two lanes in the ego direction, guardrails on the right, a planted strip on the left, smooth asphalt, and light, steady traffic. Ahead in the ego lane, a black van pulls away as traffic ahead moves, increasing the gap. A silver car is stopped along the left curb near the camera, outside the travel lane and stationary. Farther ahead in the right lane, another car proceeds steadily without changing lanes.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car, because traffic ahead is moving. The van's movement indicates changing traffic conditions ahead, so following it allows you to anticipate speed changes and avoid sudden braking."}
{"id": "train_02091", "split": "train", "clip_key": "2020-0220-151845_025983_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "025983"}, "frames": ["2020-0220-151845_025983_movie_t-3.jpg", "2020-0220-151845_025983_movie_t-2.jpg", "2020-0220-151845_025983_movie_t-1.jpg", "2020-0220-151845_025983_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under elevated expressway structures, with three same-direction lanes, guardrails on the right, dry pavement, and a generally moderate, steady traffic flow. A black van travels ahead in the ego lane, proceeding through the green signal and setting the ego car's pace. A small white kei pickup is alongside to the left near the ego vehicle, moving more slowly in its lane as the approach to the junction continues. A silver van in the right lane slightly ahead holds a similar speed and stays in its lane without drifting. Overhead traffic lights for this approach show green.", "hazard_reasoning": "There is a black van driving in front of the ego car in the ego lane, because of the green traffic light. Maintain a safe following distance behind the van to respond if it slows or stops unexpectedly."}
{"id": "train_02092", "split": "train", "clip_key": "2020-0213-143552_031586_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "031586"}, "frames": ["2020-0213-143552_031586_movie_t-3.jpg", "2020-0213-143552_031586_movie_t-2.jpg", "2020-0213-143552_031586_movie_t-1.jpg", "2020-0213-143552_031586_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the van carefully.", "environment_perception": "An urban two-way street with one narrow lane per direction runs between midrise buildings, the pavement dry and traffic light. On the ego side near right, a white flatbed truck is parked at the curb, encroaching into the usable lane and constraining the path. Along the left curb ahead, two vans are stopped, including a black van farther up as noted, further narrowing the ego lane. A person stands on the right sidewalk by a storefront and does not step into the road. Faded zebra-crossing markings appear in the foreground, with no other salient signals visible.", "hazard_reasoning": "There is a black van parked on the left side of the road. This parked van restricts the roadway and may force the driver to manoeuvre around it, increasing the risk of conflict with oncoming traffic."}
{"id": "train_02093", "split": "train", "clip_key": "2020-0204-150838_084284_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "084284"}, "frames": ["2020-0204-150838_084284_movie_t-3.jpg", "2020-0204-150838_084284_movie_t-2.jpg", "2020-0204-150838_084284_movie_t-1.jpg", "2020-0204-150838_084284_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban two-lane same-direction road runs alongside a guardrail and elevated structure, with dry, well-marked pavement and heavy, stop-and-go traffic. A dark hatchback directly ahead in the ego lane is stopped, constraining the ego vehicle because congestion blocks the lane. In the adjacent left lane, a red container truck slightly ahead is also stopped, its size limiting forward visibility as the queue builds. Farther ahead, additional cars and trucks in both lanes remain stationary or creep slowly, maintaining the jam. No salient signals or unusual signs are visible.", "hazard_reasoning": "There is a black sedan stopped in front of the ego lane, because of traffic congestion ahead. The driver should stop to avoid collision with the stationary sedan ahead."}
{"id": "train_02094", "split": "train", "clip_key": "titan_clip_893_000354_movie", "source": {"subset": "titan", "scenario": "clip_893", "frame": "000354"}, "frames": ["titan_clip_893_000354_movie_t-3.jpg", "titan_clip_893_000354_movie_t-2.jpg", "titan_clip_893_000354_movie_t-1.jpg", "titan_clip_893_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrians in the lane", "environment_perception": "An urban two-way street with one narrow lane in each direction and no median shows worn but serviceable pavement and light traffic. Parked cars line the left curb and a parking lot entrance sits beside them, while a signal set hangs over an intersection ahead. In the ego lane just ahead, a pair of pedestrians wearing white shirts and carrying handbags walk away from the vehicle within the lane because there is no sidewalk, occupying the left edge and constraining pace. On the right, a small truck is stopped near the camera and another box truck farther ahead stands with its rear doors open at a storefront, narrowing the oncoming lane. No moving vehicles are immediately nearby.", "hazard_reasoning": "There are two pedestrians wearing white shirts, carrying handbags, and walking away from the ego car, in the ego lane, because there is no sidewalk. They are occupying the vehicle's path and may not see approaching traffic, so the driver should yield to avoid collision."}
{"id": "train_02095", "split": "train", "clip_key": "2020-0228-102841_054579_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "054579"}, "frames": ["2020-0228-102841_054579_movie_t-3.jpg", "2020-0228-102841_054579_movie_t-2.jpg", "2020-0228-102841_054579_movie_t-1.jpg", "2020-0228-102841_054579_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the turning truck", "environment_perception": "An urban signalized intersection with left-hand traffic comes into view on a smooth multilane road, and the ego car waits at the stop line; cross traffic is moderate. Ahead in the junction, a small white truck turns across the front of the ego vehicle into the ego lane, becoming the lead vehicle as it completes the maneuver. Slightly right of center, a silver van continues straight across from right to left through the intersection without entering the ego lane. On the right-side crosswalk, a pedestrian walks across in front of the stopped traffic. The traffic signal facing the ego approach shows red.", "hazard_reasoning": "There is a white truck turning in front of the ego-car, to the ego lane, ahead at the intersection. You should yield because the truck is cutting into your lane and could collide if you proceed."}
{"id": "train_02096", "split": "train", "clip_key": "2020-0131-135401_008271_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008271"}, "frames": ["2020-0131-135401_008271_movie_t-3.jpg", "2020-0131-135401_008271_movie_t-2.jpg", "2020-0131-135401_008271_movie_t-1.jpg", "2020-0131-135401_008271_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "A narrow urban two-way street with one lane each direction runs between buildings and a fence; the pavement looks smooth, bright sun causes some glare, and traffic in the ego lane is halted. A large white box truck is directly ahead in the ego lane, stopped because of traffic congestion ahead and blocking the path, so it governs the ego vehicle's pace. On the left, a pedestrian near the curb walks forward beside the vehicles and is close to the travel lane, which may place them in the path. Several small vans are parked along the left shoulder, reducing lateral space.", "hazard_reasoning": "There is a white truck stopped in the ego lane because of traffic congestion ahead on the road. The blocked view and slowed traffic require maintaining a safe distance and being prepared to slow down for the queue ahead."}
{"id": "train_02097", "split": "train", "clip_key": "2020-0226-140503_015810_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-140503_015810_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-140503_015810_movie_t-3_augB1.jpg", "2020-0226-140503_015810_movie_t-2_augB1.jpg", "2020-0226-140503_015810_movie_t-1_augB1.jpg", "2020-0226-140503_015810_movie_t_augB1.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "HIGH", "warning_content": "Be aware of the turning truck", "environment_perception": "An urban two-way street lined with mid-rise buildings has one lane each way divided by double white lines, with dry, slightly worn pavement and light traffic; the left lane is partially narrowed near the curb. A white Sagawa truck ahead along the left curb in the ego lane is turning left, occupying the lane and constraining the ego vehicle's path. An oncoming black car travels toward the camera in the opposite lane, passing the obstruction and influencing when the ego vehicle can pull around it. Parked vehicles along the right shoulder further tighten the roadway.", "hazard_reasoning": "There is a white truck in the left lane, turning left. Be aware of its turn as it may intrude into your lane, requiring you to adjust speed and maintain safe clearance."}
{"id": "train_02098", "split": "train", "clip_key": "2020-0228-102841_061288_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "061288"}, "frames": ["2020-0228-102841_061288_movie_t-3.jpg", "2020-0228-102841_061288_movie_t-2.jpg", "2020-0228-102841_061288_movie_t-1.jpg", "2020-0228-102841_061288_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to the stopped vehicle ahead", "environment_perception": "An urban multi-lane divided arterial with smooth asphalt runs straight past office buildings, separated by a small planted median; traffic is heavy and largely stopped near an intersection. A black mid-size SUV directly ahead in the ego lane is stationary because the traffic signal ahead is red, holding the ego car in queue. To the left, a line of cars and box trucks in the same direction slows to a stop alongside, pacing the ego vehicle. On the right, several vans in adjacent lanes creep forward and then wait at the line without merging. The red signal remains the main cause of the standstill, and no oncoming traffic is present on this carriageway.", "hazard_reasoning": "There is a black mid-SUV stopped in front of the ego-car, in the ego lane, because of the red traffic light ahead on the road. The driver should yield to the stopped vehicle to avoid a rear-end collision."}
{"id": "train_02099", "split": "train", "clip_key": "titan_clip_446_000108_movie", "source": {"subset": "titan", "scenario": "clip_446", "frame": "000108"}, "frames": ["titan_clip_446_000108_movie_t-3.jpg", "titan_clip_446_000108_movie_t-2.jpg", "titan_clip_446_000108_movie_t-1.jpg", "titan_clip_446_000108_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for crossing pedestrian", "environment_perception": "An urban commercial street with a single narrow lane runs between shops and a planted median; the surface is worn but dry, and traffic is light. Ahead, a man wearing a white shirt and black pants with a shoulder bag crosses from the left side to the right, moving through the ego vehicle's lane and prompting a brief slowdown. Far ahead in the same direction, a small white van continues toward an archway at a modest speed. On the right sidewalk, several pedestrians walk along while one lingers near the curb close to the lane edge. Bollards and planters lining both sides create a tight corridor.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, carrying a shoulder bag, and crossing the street, from the left side of the road, to the right side. The driver should slow down because the pedestrian is crossing the road and may enter the vehicle's path unexpectedly."}
{"id": "train_02100", "split": "train", "clip_key": "2020-0207-151349_027666_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "027666"}, "frames": ["2020-0207-151349_027666_movie_t-3.jpg", "2020-0207-151349_027666_movie_t-2.jpg", "2020-0207-151349_027666_movie_t-1.jpg", "2020-0207-151349_027666_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth, dry pavement is shown, with the ego vehicle in the leftmost lane; traffic is heavy but beginning to ease. A white box truck directly ahead in the ego lane pulls away and accelerates as congestion loosens, setting the ego car's pace. In the lane to the right, a silver sedan travels alongside at low speed close to the ego, limiting room for a lane change. Farther ahead in the adjacent lane, another box truck moves slowly in the same direction and helps keep the flow compressed. Bright sun glare from the upper left washes the view and reduces contrast, while a guardrail and sidewalk run along the left side.", "hazard_reasoning": "There is a white truck accelerating in the ego lane in front of the ego car, because traffic congestion has eased. The truck's acceleration and blind spot may cause unpredictable speed changes and limited visibility, so the driver should start moving to maintain a safe following distance."}
{"id": "train_02101", "split": "train", "clip_key": "2020-0204-150838_032542_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "032542"}, "frames": ["2020-0204-150838_032542_movie_t-3.jpg", "2020-0204-150838_032542_movie_t-2.jpg", "2020-0204-150838_032542_movie_t-1.jpg", "2020-0204-150838_032542_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban boulevard with multiple same-direction lanes and smooth pavement shows heavy, slow-moving traffic without a physical median. A white van directly ahead in the ego lane is stopped, holding the ego vehicle at a standstill. To the left, a black taxi alongside creeps forward in the adjacent lane, keeping parallel with the ego car and limiting merge options. Slightly farther ahead in the left lane, a white minivan is also stopped in the queue, aligned with the van in front and adding to the blockage.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car. The van's stationary position directly ahead requires the driver to stop to avoid a rear-end collision."}
{"id": "train_02102", "split": "train", "clip_key": "2020-0214-102601_025413_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "025413"}, "frames": ["2020-0214-102601_025413_movie_t-3.jpg", "2020-0214-102601_025413_movie_t-2.jpg", "2020-0214-102601_025413_movie_t-1.jpg", "2020-0214-102601_025413_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs through a busy commercial district, with three lanes in the same direction, smooth asphalt, and moderate traffic moving at a slow pace. The view stays straight with a pedestrian overpass ahead. A yellow sedan on the left draws near and cuts into the ego lane just ahead, narrowing the gap and becoming the most immediate influence on the ego car. A dark compact car already in the ego lane ahead slows behind a box truck and helps set the pace. To the right, a black SUV in the adjacent lane creeps forward alongside, posing no immediate conflict. Farther ahead, a white coach bus and a truck queue in the flow.", "hazard_reasoning": "There is a yellow sedan cutting into the ego lane from the left lane, in front of the ego car. The yellow sedan's unexpected lane change could collide with the ego vehicle, so slowing down will help maintain a safe distance."}
{"id": "train_02103", "split": "train", "clip_key": "titan_clip_590_000378_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_590_000378_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_590_000378_movie_t-3_augB1.jpg", "titan_clip_590_000378_movie_t-2_augB1.jpg", "titan_clip_590_000378_movie_t-1_augB1.jpg", "titan_clip_590_000378_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately for the crossing pedestrian", "environment_perception": "An urban narrow two-way street with no divider runs between low buildings; the pavement is smooth and traffic is very light. A pedestrian ahead enters from the left and crosses in front of the ego vehicle toward the right, wearing black pants and a white shirt, briefly occupying the lane. Another pedestrian is farther ahead near the right curb by parked vans, moving slowly but staying clear of the roadway. Several vehicles are parked along the right edge, slightly narrowing the passage, and a small side street intersects from the left. A parking sign is visible on the right.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, crossing the street in front of the ego car, from the left side of the street to the right side. The driver should stop to avoid hitting the pedestrian who is entering the lane."}
{"id": "train_02104", "split": "train", "clip_key": "2020-0226-101332_069275_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "069275"}, "frames": ["2020-0226-101332_069275_movie_t-3.jpg", "2020-0226-101332_069275_movie_t-2.jpg", "2020-0226-101332_069275_movie_t-1.jpg", "2020-0226-101332_069275_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A dense urban corridor with three same-direction lanes passes between tall buildings; the pavement is dry and smooth, and traffic flows at a moderate pace. A gray van directly ahead in the ego lane accelerates as the signal ahead shows green, leading the ego vehicle. To the right, a white minivan slightly ahead continues straight at a similar speed in the adjacent lane, limiting a right merge. On the left, a silver hatchback in the neighboring lane runs nearly parallel and edges forward near the ego's front, keeping close spacing. A forward traffic light is green.", "hazard_reasoning": "There is a gray van accelerating in front of the ego car in the ego lane, because of a green traffic light. The van's acceleration signals the start of traffic movement, so you should start moving to maintain safe following distance and keep up with the traffic flow."}
{"id": "train_02105", "split": "train", "clip_key": "titan_clip_884_000294_movie", "source": {"subset": "titan", "scenario": "clip_884", "frame": "000294"}, "frames": ["titan_clip_884_000294_movie_t-3.jpg", "titan_clip_884_000294_movie_t-2.jpg", "titan_clip_884_000294_movie_t-1.jpg", "titan_clip_884_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban back street with a single narrow two-way carriageway and no centerline runs between tall buildings; the pavement is smooth and traffic is light. Ahead on the left near the curb, a small group of pedestrians lingers at the edge and steps slightly into the lane, potentially entering the ego path. Farther ahead, a man in a striped shirt carrying a handbag walks away along the right edge of the road where there is no sidewalk, occupying the lane margin. A small truck is stopped farther ahead on the left side, reducing available width.", "hazard_reasoning": "There is a man wearing a striped shirt, carrying a handbag, and walking on the right side of the road away from the ego car, because there is no sidewalk. The driver should manoeuvre carefully around the pedestrian to avoid a collision since he is walking on the roadway."}
{"id": "train_02106", "split": "train", "clip_key": "2020-0203-114632_072392_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "072392"}, "frames": ["2020-0203-114632_072392_movie_t-3.jpg", "2020-0203-114632_072392_movie_t-2.jpg", "2020-0203-114632_072392_movie_t-1.jpg", "2020-0203-114632_072392_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated divided road with two same-direction lanes curves right beside a sound barrier, with a guardrail separating an adjacent parallel roadway; the pavement is dry and traffic is heavy and slow. A gray van directly ahead in the ego lane slows and gradually pulls away because of congestion in front. To the right, a large work truck in the neighboring lane creeps forward, pacing the flow and limiting overtaking. Farther ahead, a queue of cars and trucks fills both lanes under an overpass, constraining the ego vehicle. On the parallel roadway to the right, additional same-direction vehicles also move slowly.", "hazard_reasoning": "There is a gray van slowing in front of the ego car, moving away from the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adapt to the reduced traffic flow ahead."}
{"id": "train_02107", "split": "train", "clip_key": "2020-0207-151349_004985_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "004985"}, "frames": ["2020-0207-151349_004985_movie_t-3.jpg", "2020-0207-151349_004985_movie_t-2.jpg", "2020-0207-151349_004985_movie_t-1.jpg", "2020-0207-151349_004985_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene shows a two-way road that widens at a broad intersection with clear arrows and smooth pavement, and traffic is moderate. Directly ahead, a silver van merges across into the ego lane in the middle of the intersection and continues ahead, momentarily constraining the ego vehicle's pace. Farther ahead to the right, a black sedan turns toward the uphill lanes and accelerates away, remaining outside the ego path. In the adjacent right lane, a motorcyclist proceeds straight through the junction parallel to the ego vehicle without merging. On the far side of the roadway, oncoming traffic descends in separate lanes, and bicycles are parked along the left curb.", "hazard_reasoning": "There is a silver van lane changing in the ego lane, in the middle of the intersection. The van's unexpected lane change could force you to brake suddenly, so you should slow down to maintain a safe distance."}
{"id": "train_02108", "split": "train", "clip_key": "titan_clip_1255_000084_movie", "source": {"subset": "titan", "scenario": "clip_1255", "frame": "000084"}, "frames": ["titan_clip_1255_000084_movie_t-3.jpg", "titan_clip_1255_000084_movie_t-2.jpg", "titan_clip_1255_000084_movie_t-1.jpg", "titan_clip_1255_000084_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning vehicle", "environment_perception": "An urban neighborhood with narrow two-way streets and no median comes into view as the ego vehicle approaches a skewed, unsignalized intersection while curving right; the pavement is dry and traffic is light. Ahead on the left at a parking-lot exit, a white van is stopped and edging forward, potentially entering the ego lane as the turn begins. Farther ahead on the cross street to the right, a small white car continues away along the same-direction lane and does not constrain the ego's pace. On the left sidewalk by the guardrail, a pedestrian walks toward the lot entrance, remaining out of the roadway. No black sedan is turning in the middle of the intersection; none is visible.", "hazard_reasoning": "There is a black sedan turning in the middle of an intersection. This turning vehicle could cut across your path unexpectedly, so stay alert."}
{"id": "train_02109", "split": "train", "clip_key": "titan_clip_435_000018_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_435_000018_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_435_000018_movie_t-3_augB1.jpg", "titan_clip_435_000018_movie_t-2_augB1.jpg", "titan_clip_435_000018_movie_t-1_augB1.jpg", "titan_clip_435_000018_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban backstreet with a single narrow undivided lane and block-paved surface runs between dense shopfronts; traffic is light and slow. The pavement looks intact but space is limited by curbside parking on the left and clutter near storefronts. A dark delivery truck ahead on the left is stopped for loading, protruding into the lane and constraining the ego car's path. Farther ahead, a pedestrian in a gray jacket walks away along the middle of the road because a parked vehicle narrows the side, and the person may stay in the ego lane. Beyond them, a small car continues ahead in the same direction and pulls away. A no entry sign marks a side alley on the left.", "hazard_reasoning": "There is a pedestrian wearing a gray jacket, walking in the middle of the road, away from the ego car, because of the parked vehicle. The driver should slow down to avoid colliding with the pedestrian who is forced into the traffic lane by the parked truck."}
{"id": "train_02110", "split": "train", "clip_key": "2020-0205-103411_031347_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "031347"}, "frames": ["2020-0205-103411_031347_movie_t-3.jpg", "2020-0205-103411_031347_movie_t-2.jpg", "2020-0205-103411_031347_movie_t-1.jpg", "2020-0205-103411_031347_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down and keep a safe distance.", "environment_perception": "A sunny urban street with two same-direction lanes is bounded by guardrails; the pavement looks smooth and traffic is moderate and slow. Ahead in the ego lane, a blue sedan maneuvers slightly right and eases off to avoid a vehicle stopped on the left, so the ego car follows at its pace. A small white delivery truck is parked at the left curb just ahead, constricting the lane and prompting the rightward shift. In the right lane, a black taxi continues straight alongside, reducing room for a lane change.", "hazard_reasoning": "There is a blue sedan maneuvering in the ego lane, away from the ego car, because of the parked vehicle on the left. The blue sedan's unexpected lane shift may require evasive action, so the driver should slow down to maintain a safe distance."}
{"id": "train_02111", "split": "train", "clip_key": "2020-0212-102546_048690_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "048690"}, "frames": ["2020-0212-102546_048690_movie_t-3.jpg", "2020-0212-102546_048690_movie_t-2.jpg", "2020-0212-102546_048690_movie_t-1.jpg", "2020-0212-102546_048690_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with a single through lane in the ego's direction runs alongside a low planted median separating oncoming lanes; the pavement looks smooth and traffic is moderate, flowing steadily toward a signalized intersection. Ahead in the ego lane, a silver van accelerates away, increasing the gap and ceasing to constrain the ego vehicle. To the right beyond the median, oncoming vehicles, including a white van, approach in their lanes without affecting the ego path. Overhead traffic signals span the junction ahead, and buildings line both sides with no obstacles in the roadway.", "hazard_reasoning": "There is a silver van accelerating in the ego lane, away from the ego car. The van is gaining speed at the green light, so you need to follow the vehicle ahead to maintain safe spacing and traffic flow."}
{"id": "train_02112", "split": "train", "clip_key": "titan_clip_198_000468_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_198_000468_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_198_000468_movie_t-3_augB1.jpg", "titan_clip_198_000468_movie_t-2_augB1.jpg", "titan_clip_198_000468_movie_t-1_augB1.jpg", "titan_clip_198_000468_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrians crossing ahead", "environment_perception": "A narrow urban side street runs between tall buildings with no median and smooth asphalt; traffic is light but briefly impeded. Two pedestrians talk as they cross directly ahead from the right sidewalk to the left, occupying the ego vehicle's path and constraining its pace. A large white box truck is stopped along the left curb just ahead, protruding into the lane and narrowing the available space. On the right sidewalk a person stands beside a bicycle near the curb and remains stationary. No traffic signals or posted speeds are visible, and no oncoming vehicles appear.", "hazard_reasoning": "There are two pedestrians talking in a group, crossing the street in front of the ego car, from the right side of the street to the left side. The driver should be aware of these pedestrians because their path intersects the vehicle's trajectory and may lead to a collision risk if not anticipated."}
{"id": "train_02113", "split": "train", "clip_key": "2020-0213-143552_013675_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "013675"}, "frames": ["2020-0213-143552_013675_movie_t-3.jpg", "2020-0213-143552_013675_movie_t-2.jpg", "2020-0213-143552_013675_movie_t-1.jpg", "2020-0213-143552_013675_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with multiple lanes and no physical median runs between tall buildings; the pavement is dry and traffic is light. A small white truck directly ahead in the ego lane remains stopped at a red traffic signal, holding the ego car in place. In the opposing lanes to the right, a larger truck approaches slowly but stays clear of the ego path. A few pedestrians linger near bicycles along the right sidewalk without stepping into the road. The overhead signal at the intersection ahead shows red.", "hazard_reasoning": "There is a white truck stopped, in the ego lane, in front of the ego car, because of red traffic lights ahead. The driver should stop to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_02114", "split": "train", "clip_key": "2020-0207-101955_085047_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "085047"}, "frames": ["2020-0207-101955_085047_movie_t-3.jpg", "2020-0207-101955_085047_movie_t-2.jpg", "2020-0207-101955_085047_movie_t-1.jpg", "2020-0207-101955_085047_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road passes between high concrete walls, with a single left-hand lane for the ego vehicle, a concrete median on the right, smooth pavement, and light steady traffic on a gentle right curve. A small dark pickup directly ahead in the ego lane proceeds at a steady speed, setting the ego car's pace. Farther ahead, a blue truck in the ego lane drives away from the ego car. Across the median to the right, a few cars travel in the opposite direction without affecting the ego path.", "hazard_reasoning": "There is a blue truck driving in the ego lane, away from the ego car. Driver should be aware of its presence as it may slow or brake ahead unexpectedly, requiring a quick response."}
{"id": "train_02115", "split": "train", "clip_key": "titan_clip_652_000060_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_652_000060_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_652_000060_movie_t-3_augB1.jpg", "titan_clip_652_000060_movie_t-2_augB1.jpg", "titan_clip_652_000060_movie_t-1_augB1.jpg", "titan_clip_652_000060_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban street with a narrow undivided two-way lane slopes gently uphill; the asphalt is smooth with a manhole cover and traffic is light with no vehicles visible. Ahead in the ego lane, two pedestrians dressed in black walk away from the vehicle along the roadway, using it because there is little or no sidewalk and they occupy part of the ego path. To the right in the foreground, a red delivery motorcycle is parked at the curb and protrudes slightly into the lane, narrowing the available space.", "hazard_reasoning": "There are two pedestrians wearing a black outfit, walking in front of the ego car, away from the ego car, because there is no sidewalk. Since pedestrians are walking on the road without a sidewalk, the driver must slow down to avoid collision."}
{"id": "train_02116", "split": "train", "clip_key": "2020-0210-101957_023020_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_023020_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_023020_movie_t-3_augB1.jpg", "2020-0210-101957_023020_movie_t-2_augB1.jpg", "2020-0210-101957_023020_movie_t-1_augB1.jpg", "2020-0210-101957_023020_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be cautious of the motorcycle ahead.", "environment_perception": "An urban multi-lane road with two same-direction lanes and no physical median stretches toward a signalized intersection, the pavement smooth and traffic moderate and steady. A black motorcycle ahead in the ego lane travels straight at a steady pace, directly setting the ego vehicle's speed. Slightly ahead to the right, a white van in the adjacent same-direction lane continues through the intersection at similar speed and could drift back toward the ego lane afterward. To the far right, a black sedan moves toward the camera in the oncoming lanes, remaining separated by lane markings and not conflicting with the ego path. Signal heads are visible above the intersection.", "hazard_reasoning": "There is a black motorcycle driving in front of the ego car in the ego lane. The motorcycle's position directly ahead means it could brake suddenly or change behavior, so the driver should remain cautious."}
{"id": "train_02117", "split": "train", "clip_key": "titan_clip_445_000486_movie", "source": {"subset": "titan", "scenario": "clip_445", "frame": "000486"}, "frames": ["titan_clip_445_000486_movie_t-3.jpg", "titan_clip_445_000486_movie_t-2.jpg", "titan_clip_445_000486_movie_t-1.jpg", "titan_clip_445_000486_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban alley with a single narrow lane climbs gently uphill on brick paving, with no median and light traffic. A white box truck stands on the right side in the same direction, partly intruding into the lane and constraining the approach. On the left near the camera, a pedestrian in a white shirt walks away along the edge, keeping left because construction cones and barriers narrow that side. Beside the truck, another person in a white shirt waits by the curb near the rear without stepping into the lane. Farther ahead at the intersection, a small vehicle moves across on the cross street, and sun glare near the hilltop reduces contrast.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the left side of the road, away from the ego car, because of construction on the left side. Slow down to maintain a safe distance as the pedestrian could enter the vehicle's path near the construction zone."}
{"id": "train_02118", "split": "train", "clip_key": "titan_clip_488_000342_movie", "source": {"subset": "titan", "scenario": "clip_488", "frame": "000342"}, "frames": ["titan_clip_488_000342_movie_t-3.jpg", "titan_clip_488_000342_movie_t-2.jpg", "titan_clip_488_000342_movie_t-1.jpg", "titan_clip_488_000342_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking on road edge", "environment_perception": "This is an urban two-way side street with a single narrow lane in each direction and no divider; the pavement is smooth and traffic is light. On the right ahead, a pedestrian wearing a black jacket and a red and white skirt walks away from the ego along the edge where there is no sidewalk, remaining close to the lane and potentially entering the ego path. On the left near a parking lot entrance, two men stand by orange cones at the curb, close to the travel lane and may step into it. Parked vans and a temporary barrier line the left, while a parked bicycle and a small post on the right further narrow the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a black jacket and a red and white skirt, and walking away from the ego car, on the right side of the road, because there is no sidewalk. The driver should be aware because the pedestrian could step into the lane unexpectedly without a sidewalk."}
{"id": "train_02119", "split": "train", "clip_key": "2020-0207-151349_002147_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "002147"}, "frames": ["2020-0207-151349_002147_movie_t-3.jpg", "2020-0207-151349_002147_movie_t-2.jpg", "2020-0207-151349_002147_movie_t-1.jpg", "2020-0207-151349_002147_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial lined with tall buildings carries traffic on dry pavement, with two lanes in each direction separated by double solid lines and overall moderate flow. A gray sedan ahead in the ego lane slows, constraining the ego vehicle's pace. To its right, a darker car in the adjacent same-direction lane continues forward slightly faster, overtaking. Across the center lines, several oncoming vehicles approach steadily without affecting the ego lane. A blue delivery van is parked along the left curb outside the travel lane.", "hazard_reasoning": "There is a gray sedan slowing down in the front of the ego-car, in the ego lane. The ego-vehicle should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_02120", "split": "train", "clip_key": "2020-0228-102841_025648_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "025648"}, "frames": ["2020-0228-102841_025648_movie_t-3.jpg", "2020-0228-102841_025648_movie_t-2.jpg", "2020-0228-102841_025648_movie_t-1.jpg", "2020-0228-102841_025648_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way street runs between mid-rise buildings, with two lanes in the ego direction and painted markings but no physical median; the pavement is dry and traffic ahead is moderate, bunching into a short queue. A black sedan directly ahead in the ego lane slows due to congestion, constraining the ego vehicle's pace. To the right, a covered truck stands in the curb lane near the sidewalk, limiting the adjacent lane's flow. On the left side of the carriageway, oncoming cars travel in their lanes without interacting with the ego path. An overhead sign shows a 50 speed limit, with traffic signals mounted above the road.", "hazard_reasoning": "A black sedan is slowing in front of the ego car in the ego lane, because of traffic congestion. Therefore, the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_02121", "split": "train", "clip_key": "2020-0127-132751_081513_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "081513"}, "frames": ["2020-0127-132751_081513_movie_t-3.jpg", "2020-0127-132751_081513_movie_t-2.jpg", "2020-0127-132751_081513_movie_t-1.jpg", "2020-0127-132751_081513_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with two lanes per direction and no physical median stretches ahead, the pavement smooth and traffic light to moderate near a signalized intersection. A green canvas-covered truck travels ahead in the ego lane, moving away through the crosswalk and modestly setting the pace. In the opposite direction, a white flatbed truck approaches in the right oncoming lane, proceeding straight and remaining separated by the center line. Farther ahead, several cars continue straight in both same-direction lanes with comfortable gaps. Overhead traffic lights span the junction, though the signal aspect is not clearly visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02122", "split": "train", "clip_key": "2020-0127-132751_034002_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "034002"}, "frames": ["2020-0127-132751_034002_movie_t-3.jpg", "2020-0127-132751_034002_movie_t-2.jpg", "2020-0127-132751_034002_movie_t-1.jpg", "2020-0127-132751_034002_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs on dry, smooth pavement, bounded by a low hedge median on the right; traffic is moderate near the camera but compresses to heavy farther ahead. A black minivan directly ahead in the ego lane slows because congestion forms up the road, constraining the ego car's pace. A white sports car in the adjacent left lane travels slightly ahead and continues straight, passing the slowing queue without merging. Farther ahead, several trucks and cars bunch up and brake in both lanes, creating the bottleneck that drives the slowdowns.", "hazard_reasoning": "There is a black minivan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The minivan's deceleration signals reduced traffic flow, so the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_02123", "split": "train", "clip_key": "titan_clip_298_000192_movie", "source": {"subset": "titan", "scenario": "clip_298", "frame": "000192"}, "frames": ["titan_clip_298_000192_movie_t-3.jpg", "titan_clip_298_000192_movie_t-2.jpg", "titan_clip_298_000192_movie_t-1.jpg", "titan_clip_298_000192_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane street with mid-rise buildings, no median, and smooth pavement; traffic is light as the ego vehicle proceeds in the left lane. A large white van runs alongside very close on the left, moving in the same direction and narrowing lateral space. An oncoming white van approaches ahead in the opposite lane and passes by without encroaching on the ego's path. A cyclist ahead to the right rolls slowly along the curb near storefronts, parallel to traffic and outside the travel lane. A no-entry sign stands at a right-side side street.", "hazard_reasoning": "Since no hazards are detected, the driver can maintain normal speed to continue safely."}
{"id": "train_02124", "split": "train", "clip_key": "titan_clip_537_000126_movie", "source": {"subset": "titan", "scenario": "clip_537", "frame": "000126"}, "frames": ["titan_clip_537_000126_movie_t-3.jpg", "titan_clip_537_000126_movie_t-2.jpg", "titan_clip_537_000126_movie_t-1.jpg", "titan_clip_537_000126_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "A narrow urban street with no centerline and smooth pavement runs between buildings, and traffic is light as the road bends slightly right ahead. A white truck is parked on the right side of the road just before the bend, protruding into the carriageway and narrowing the available space. A pedestrian ahead near the truck walks away along the right edge of the lane, potentially constraining the ego vehicle's approach. Cones and tape mark a small work area along the right sidewalk beside the truck, adding a roadside obstruction.", "hazard_reasoning": "There is a white truck parked on the right side of the road. The parked truck partially obstructs the sidewalk and road edge, reducing visibility and limiting available space, so the driver should carefully manoeuvre around the truck."}
{"id": "train_02125", "split": "train", "clip_key": "titan_clip_1151_000210_movie", "source": {"subset": "titan", "scenario": "clip_1151", "frame": "000210"}, "frames": ["titan_clip_1151_000210_movie_t-3.jpg", "titan_clip_1151_000210_movie_t-2.jpg", "titan_clip_1151_000210_movie_t-1.jpg", "titan_clip_1151_000210_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban shopping street with paver surface and no marked lanes forms a single carriageway that curves left, and traffic is light. Ahead in the lane, a small van proceeds away toward the bend at low speed, setting the pace. On the left, a delivery truck is stopped at the curb with its rear door open as a worker unloads crates, encroaching on the lane and narrowing the passage. On the right edge, a pedestrian in a black T-shirt and cap walks toward the ego along the pedestrian lane beside the shops, close to the roadway. A bicycle is parked against the right wall.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and a cap, walking on the right side of the road towards the ego car, because of the pedestrian lane. The pedestrian is approaching the vehicle within the designated lane, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_02126", "split": "train", "clip_key": "2020-0225-102455_071690_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "071690"}, "frames": ["2020-0225-102455_071690_movie_t-3.jpg", "2020-0225-102455_071690_movie_t-2.jpg", "2020-0225-102455_071690_movie_t-1.jpg", "2020-0225-102455_071690_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to maintain safe distance.", "environment_perception": "A dense urban arterial with three same-direction lanes runs between tall buildings, the pavement dry and traffic moving slowly. A white minivan directly ahead in the ego lane inches forward because congestion builds ahead, setting our pace. To the right, vehicles in the adjacent lane, including a gray hatchback and a black taxi, roll slowly past while holding their lane and staying slightly ahead of the minivan. On the left, several vans and a truck are stopped at the curb, protruding into the left lane and leaving that lane largely unusable near us. An overhead blue sign shows three straight arrows, and an electronic display with red characters is visible farther ahead. A planted strip with trees lines the right side of the roadway.", "hazard_reasoning": "There is a white minivan inching forward in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_02127", "split": "train", "clip_key": "2020-0203-114632_082455_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "082455"}, "frames": ["2020-0203-114632_082455_movie_t-3.jpg", "2020-0203-114632_082455_movie_t-2.jpg", "2020-0203-114632_082455_movie_t-1.jpg", "2020-0203-114632_082455_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban arterial under an elevated expressway has two lanes in the ego direction, with the ego in a left-turn lane; pavement is smooth and traffic is light but slowed near a signalized intersection. A gray minivan is directly ahead in the ego lane, stopped and holding the ego car, consistent with the note about it being stopped in front. Farther ahead in the same lane, a large dump truck is also waiting near the junction, further constraining progress. In the adjacent through lane to the right, a couple of cars continue straight at low speed without merging into the ego lane. Across a curb and rail, sparse oncoming traffic passes to the right with no interaction.", "hazard_reasoning": "There is a gray minivan stopped in front of the ego car. The driver should stop to avoid a rear-end collision with the stationary minivan."}
{"id": "train_02128", "split": "train", "clip_key": "titan_clip_471_000048_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_471_000048_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_471_000048_movie_t-3_augB1.jpg", "titan_clip_471_000048_movie_t-2_augB1.jpg", "titan_clip_471_000048_movie_t-1_augB1.jpg", "titan_clip_471_000048_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "An urban shopping street with a single narrow shared lane and no centerline runs between storefronts; the cobblestone-style pavement looks dry and the traffic flow is light. A man in the middle of the roadway ahead walks toward the ego-vehicle, carrying a handbag and holding his hands near his face, and he occupies the ego lane. Two pedestrians a bit farther ahead slightly left cross diagonally to the right across the lane, potentially entering the ego path. A small white van sits far ahead near the end of the block in the same corridor, appearing mostly stationary and limiting space. Shop signs and small cones line the edges, but no signals or posted speeds are visible.", "hazard_reasoning": "There is a man carrying a handbag, clasping his hands in front of his face, and walking in the middle of the road in front of and toward the ego-car. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_02129", "split": "train", "clip_key": "2020-0207-101955_074053_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "074053"}, "frames": ["2020-0207-101955_074053_movie_t-3.jpg", "2020-0207-101955_074053_movie_t-2.jpg", "2020-0207-101955_074053_movie_t-1.jpg", "2020-0207-101955_074053_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck merging.", "environment_perception": "An urban divided arterial with two same-direction lanes and a concrete median barrier appears, the pavement smooth and traffic light throughout. Ahead in the ego lane, a white and green covered truck changes lanes to the right, moving steadily into the adjacent lane and momentarily setting the ego vehicle's pace as it completes the maneuver. No other close vehicles are visible nearby in the same direction, and no oncoming traffic is seen behind the barrier. A striped gore with posts lines the right side near a diverging lane, while overhead gantries are present without clearly readable signs.", "hazard_reasoning": "There is a white and green truck changing lanes from the ego lane into the right lane. This maneuver could affect your path ahead, so you should be aware of the truck merging."}
{"id": "train_02130", "split": "train", "clip_key": "2020-0212-150403_014972_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "014972"}, "frames": ["2020-0212-150403_014972_movie_t-3.jpg", "2020-0212-150403_014972_movie_t-2.jpg", "2020-0212-150403_014972_movie_t-1.jpg", "2020-0212-150403_014972_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way road with smooth pavement runs between mid-rise buildings; there is no physical median, and traffic is heavy only in the ego lane while oncoming flow is light to moderate. Directly ahead, a white SUV in the ego lane is stopped with brake lights because of congestion ahead, holding the ego vehicle. Farther ahead in the same lane, a dark SUV also remains stopped, extending the short queue. To the right, oncoming cars move past at a steady pace without interacting with the ego's path. A box truck sits in a loading bay along the left curb, stationary and outside the travel lane.", "hazard_reasoning": "There is a white SUV stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle and adapt safely to the slowdown."}
{"id": "train_02131", "split": "train", "clip_key": "titan_clip_301_000438_movie", "source": {"subset": "titan", "scenario": "clip_301", "frame": "000438"}, "frames": ["titan_clip_301_000438_movie_t-3.jpg", "titan_clip_301_000438_movie_t-2.jpg", "titan_clip_301_000438_movie_t-1.jpg", "titan_clip_301_000438_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way side street with smooth pavement approaches an unsignalized cross street; there is no median, and traffic is light but the left edge is occupied by a work zone that narrows the lane. Ahead slightly left, a man wearing black overalls and an orange reflective jacket stands in the roadway as a construction flagger, signaling and controlling traffic, which constrains the ego vehicle's progress. On the cross street directly ahead, a teal box truck rolls slowly from left to right across the intersection, yielding to the flagger and briefly blocking the ego path. At the left curb before the junction, two more workers stand beside a yellow service truck behind a striped barrier, close to the travel lane and reducing clearance. A silver minivan is parked along the right curb near the corner and remains stationary.", "hazard_reasoning": "There is a man, wearing a black overall and orange reflector jacket, standing on the left side of the road, because of construction work on the left. This worker partially obstructs the lane and requires the driver to manoeuvre carefully to avoid collision."}
{"id": "train_02132", "split": "train", "clip_key": "titan_clip_1118_000318_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1118_000318_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1118_000318_movie_t-3_augB1.jpg", "titan_clip_1118_000318_movie_t-2_augB1.jpg", "titan_clip_1118_000318_movie_t-1_augB1.jpg", "titan_clip_1118_000318_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single lane in the ego direction, no median, and smooth pavement shows light traffic as the car continues straight. A small white van ahead in the ego lane slows near the left curb and briefly stops, constraining the ego vehicle's pace. Farther ahead, a pedestrian wearing black pants and a white coat carries shopping bags and crosses mid-block from the left, moving toward the ego lane and becoming the main potential conflict. Another light van farther up proceeds away in the same direction and keeps clear. Parked vehicles line the left, with planters and a cone along the right sidewalk.", "hazard_reasoning": "A pedestrian wearing black pants and a white coat, carrying shopping bags, and crossing the street in the middle of the road, to the left side. The pedestrian is moving unpredictably into the vehicle's path, so the driver should slow down to avoid a collision."}
{"id": "train_02133", "split": "train", "clip_key": "titan_clip_668_000408_movie", "source": {"subset": "titan", "scenario": "clip_668", "frame": "000408"}, "frames": ["titan_clip_668_000408_movie_t-3.jpg", "titan_clip_668_000408_movie_t-2.jpg", "titan_clip_668_000408_movie_t-1.jpg", "titan_clip_668_000408_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of the scooter merging right", "environment_perception": "A narrow urban shopping street with smooth pavement and no marked centerline forms a two-way single carriageway with light traffic and no median. Ahead in the center, a white scooter travels forward in front of the ego car and trends toward the right side, with no other lane available. On the right side, a cluster of pedestrians stands close to the curb outside shops, some walking along the sidewalk while watching the roadway. On the left sidewalk, several pedestrians walk parallel to traffic near the edge but remain off the roadway. No clearly readable traffic signals or posted speeds are prominent.", "hazard_reasoning": "There is a white scooter moving forward in front of the ego car, towards the right side ego car, because there is no other lane. The scooter may shift further into your lane, so you should be aware of its movement."}
{"id": "train_02134", "split": "train", "clip_key": "titan_clip_1283_000420_movie", "source": {"subset": "titan", "scenario": "clip_1283", "frame": "000420"}, "frames": ["titan_clip_1283_000420_movie_t-3.jpg", "titan_clip_1283_000420_movie_t-2.jpg", "titan_clip_1283_000420_movie_t-1.jpg", "titan_clip_1283_000420_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with no center line runs under a rail viaduct, the worn pavement and storefronts close to the curb suggesting a shared roadway with light vehicle traffic but many pedestrians. Ahead on the right, a pedestrian wearing a cap walks away with a child in a white T-shirt along the curb, moving in the same direction as the ego car and potentially edging into the travel path. Farther ahead near the center, two other pedestrians proceed away in the lane, guiding the ego vehicle to slow and track centrally. At the corner on the right, a small truck stands stopped by the curb, narrowing the passage near a zebra crossing on the side street.", "hazard_reasoning": "There is a pedestrian wearing a cap, walking on the right side of the road with a child in a white t-shirt, away from the ego car. The driver should slow down because the pedestrians are walking on the roadway and may change direction unexpectedly."}
{"id": "train_02135", "split": "train", "clip_key": "titan_clip_1182_000510_movie", "source": {"subset": "titan", "scenario": "clip_1182", "frame": "000510"}, "frames": ["titan_clip_1182_000510_movie_t-3.jpg", "titan_clip_1182_000510_movie_t-2.jpg", "titan_clip_1182_000510_movie_t-1.jpg", "titan_clip_1182_000510_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban backstreet with no median and worn asphalt shows light vehicle flow but heavy pedestrian activity, and the lane feels constrained by roadside shops. In the middle ahead, a pedestrian wearing a white T-shirt walks toward the ego car along the center of the road, directly in the ego path and likely to slow its approach. Slightly left ahead, two people cross diagonally to the right at walking pace, continuing across the ego lane and constraining space. On the right ahead near the curb, a woman stands close to the roadway beside a building entrance and could step into the path. A red-and-white scooter is parked along the right edge and bicycles with cones line the left, further narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt and walking in the middle of the road, toward the ego car. The pedestrian's path crosses the vehicle's trajectory, so the driver must carefully manoeuvre to avoid a collision."}
{"id": "train_02136", "split": "train", "clip_key": "2020-0203-114632_028460_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "028460"}, "frames": ["2020-0203-114632_028460_movie_t-3.jpg", "2020-0203-114632_028460_movie_t-2.jpg", "2020-0203-114632_028460_movie_t-1.jpg", "2020-0203-114632_028460_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes curves gently right; the leftmost is marked for buses, a short line of red bollards forms a divider, the pavement is dry and smooth, and traffic is light to moderate. A white sedan ahead in the center lane travels at a steady pace near the bollards and constrains the ego vehicle's pace. Farther ahead, a blue bus in the same direction continues straight and slows slightly as it approaches the divided section. On the right curb, a red delivery truck and a small white truck are parked in a service bay near a side street, creating a stationary line at the curb. Overhead blue direction signs are visible.", "hazard_reasoning": "No caption provided. No immediate hazards are detected, so the driver can continue at a moderate speed."}
{"id": "train_02137", "split": "train", "clip_key": "titan_clip_575_000450_movie", "source": {"subset": "titan", "scenario": "clip_575", "frame": "000450"}, "frames": ["titan_clip_575_000450_movie_t-3.jpg", "titan_clip_575_000450_movie_t-2.jpg", "titan_clip_575_000450_movie_t-1.jpg", "titan_clip_575_000450_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist", "environment_perception": "An urban two-way street with no median approaches a small intersection marked by a zebra crossing; the pavement looks smooth and traffic is light. A cyclist from the right crosses the crosswalk leftward directly in front of the ego vehicle, pedaling steadily and occupying the ego lane. Farther ahead near the intersection, a cyclist wearing a black shirt rides toward the ego along the middle of the narrow roadway, reducing clearance for the ego's approach. A 30 km/h speed-limit sign is posted on the right.", "hazard_reasoning": "There is a cyclist wearing a black shirt, cycling near the intersection, towards the ego car. The cyclist may enter the vehicle's lane as you approach, so you should yield to avoid a collision under this situation."}
{"id": "train_02138", "split": "train", "clip_key": "2020-0220-151845_013404_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "013404"}, "frames": ["2020-0220-151845_013404_movie_t-3.jpg", "2020-0220-151845_013404_movie_t-2.jpg", "2020-0220-151845_013404_movie_t-1.jpg", "2020-0220-151845_013404_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs through a dense commercial district with smooth pavement and a red curbside lane beside a fenced, busy sidewalk; traffic is heavy and slow. Ahead in the ego lane, a black SUV is stopped with brake lights on because congestion blocks the lane and it constrains the ego vehicle's pace. To the right, a light delivery truck in the adjacent lane creeps forward alongside, edging past the SUV and narrowing lateral space. On the far left, a compact car in the outer lane lingers slightly behind without changing position. No salient traffic signals are visible.", "hazard_reasoning": "There is a black SUV stopped in the ego lane because of traffic congestion ahead. The driver should stop to avoid a rear-end collision and safely accommodate the congested traffic conditions."}
{"id": "train_02139", "split": "train", "clip_key": "2020-0227-104226_045648_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "045648"}, "frames": ["2020-0227-104226_045648_movie_t-3.jpg", "2020-0227-104226_045648_movie_t-2.jpg", "2020-0227-104226_045648_movie_t-1.jpg", "2020-0227-104226_045648_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane in each direction and a painted centerline runs between low-rise buildings; the pavement looks smooth and traffic is light. A white hatchback ahead in the ego lane slows, constraining the ego vehicle's pace. Farther ahead in the same direction, a dark box truck continues straight, forming a moving queue. On the left, two pedestrians stand on the sidewalk behind railings near a side street, remaining outside the roadway. A small work area with red netting occupies the left shoulder without encroaching into the lane.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car, in the ego lane. The reduced speed of the hatchback may require the driver to slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_02140", "split": "train", "clip_key": "titan_clip_490_000528_movie", "source": {"subset": "titan", "scenario": "clip_490", "frame": "000528"}, "frames": ["titan_clip_490_000528_movie_t-3.jpg", "titan_clip_490_000528_movie_t-2.jpg", "titan_clip_490_000528_movie_t-1.jpg", "titan_clip_490_000528_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing", "environment_perception": "An urban two-way street with a solid center line and smooth pavement runs between mid-rise buildings, and traffic appears light to moderate with steady oncoming flow. A white work truck is stopped partly in the ego lane ahead with orange cones, narrowing the path and forming a small work zone. On the left beside the truck, a pedestrian wearing a cap, blue shirt, and black pants waits to cross toward the right because the parked vehicle blocks the curb area and may enter the ego lane. In the opposite lane, several cars approach, including a nearer dark sedan continuing straight and limiting room for passing.", "hazard_reasoning": "There is a pedestrian wearing a cap, wearing a blue shirt, wearing black pants, waiting to cross, on the left side of the road, to the right side, because of the parked vehicle. The pedestrian may step into the lane unexpectedly from behind the parked truck, so you should be aware and proceed cautiously."}
{"id": "train_02141", "split": "train", "clip_key": "titan_clip_667_000546_movie", "source": {"subset": "titan", "scenario": "clip_667", "frame": "000546"}, "frames": ["titan_clip_667_000546_movie_t-3.jpg", "titan_clip_667_000546_movie_t-2.jpg", "titan_clip_667_000546_movie_t-1.jpg", "titan_clip_667_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial side street with a single narrow two-way carriageway has smooth pavement and light vehicular flow, with no oncoming cars visible. On the right ahead, a pedestrian in a black shirt carrying an umbrella walks away from the ego car along the curb, remaining within the roadway and potentially near the ego path. Farther ahead near the centerline, several pedestrians move in the same direction, occupying part of the lane and setting a slow pace. A scooter is stationary at the right curb by a storefront, reducing clearance on that side. On the left, a silver car is parked partially into the lane near a shop entrance, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying an umbrella, walking on the right side of the road, away from the ego car. Slowing down gives more time to react if the pedestrian changes direction or crosses unexpectedly."}
{"id": "train_02142", "split": "train", "clip_key": "2020-0225-145150_001763_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "001763"}, "frames": ["2020-0225-145150_001763_movie_t-3.jpg", "2020-0225-145150_001763_movie_t-2.jpg", "2020-0225-145150_001763_movie_t-1.jpg", "2020-0225-145150_001763_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban two-way road with one lane each direction has no median, smooth pavement, and light overall traffic as the ego approaches a signalized intersection. A pedestrian wearing a purple jacket and a backpack waits on the left sidewalk just behind the crosswalk ahead, poised to cross and potentially enter the ego lane. A white van is stopped at the left curb just beyond the intersection, narrowing the same-direction side of the roadway. Oncoming cars travel straight in the right lane farther ahead with no immediate interaction. Overhead traffic signals hang above the junction, and roadside work barriers line the right curb beyond the intersection.", "hazard_reasoning": "There is a pedestrian wearing a purple jacket, carrying a backpack, and waiting to cross, behind the crosswalk ahead, on the left sidewalk. The pedestrian may enter the crosswalk when signaled, so you should yield to avoid a potential collision under this situation."}
{"id": "train_02143", "split": "train", "clip_key": "2020-0207-101955_074010_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "074010"}, "frames": ["2020-0207-101955_074010_movie_t-3.jpg", "2020-0207-101955_074010_movie_t-2.jpg", "2020-0207-101955_074010_movie_t-1.jpg", "2020-0207-101955_074010_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck's lane change", "environment_perception": "An urban divided roadway with two same-direction lanes runs between sound barriers, with a concrete divider on the left and a striped gore with flexible posts on the right; pavement appears smooth and traffic is light. The road curves gently right ahead. A green truck directly ahead in the ego lane signals and moves to the right lane, briefly slowing as it crosses and affecting the ego car's following distance. A white bus farther ahead in the right lane continues straight at a steady pace, creating space for the truck's merge. No oncoming traffic is visible due to the median, and no pedestrians, cyclists, or obstacles appear.", "hazard_reasoning": "There is a green truck in front of the ego car, changing to the right lane. The truck's lane change could affect the ego vehicle's trajectory and requires the driver to adjust to maintain safe distance."}
{"id": "train_02144", "split": "train", "clip_key": "2020-0220-102630_042112_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "042112"}, "frames": ["2020-0220-102630_042112_movie_t-3.jpg", "2020-0220-102630_042112_movie_t-2.jpg", "2020-0220-102630_042112_movie_t-1.jpg", "2020-0220-102630_042112_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial under an elevated roadway carries two-way traffic with multiple same-direction lanes on the left and oncoming lanes on the right, separated by painted medians; the pavement is smooth and traffic is moderate and beginning to move at a large intersection ahead. A white box truck directly ahead in the ego lane starts to roll forward as the queue moves, controlling the ego vehicle's pace. To the left, a small truck with a green-tarped bed advances in the adjacent same-direction lane, keeping alongside. At the far-right corner, several pedestrians wait by the crosswalk on the sidewalk, outside the ego path.", "hazard_reasoning": "There is a white truck starting to move in the ego lane, away from the ego car, because traffic ahead is moving. The driver should start moving in order to follow the flow and avoid abrupt acceleration or potential collision."}
{"id": "train_02145", "split": "train", "clip_key": "2020-0131-135401_005053_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "005053"}, "frames": ["2020-0131-135401_005053_movie_t-3.jpg", "2020-0131-135401_005053_movie_t-2.jpg", "2020-0131-135401_005053_movie_t-1.jpg", "2020-0131-135401_005053_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-lane road with a solid centerline and smooth pavement appears narrow, and traffic is slow and briefly queued. A 40 speed limit sign hangs overhead. A white box truck directly ahead in the ego lane is stopped because of congestion ahead, blocking the path and determining the ego vehicle's pace. An oncoming black minicar to the right stops beside the truck in its lane, keeping limited clearance between opposing traffic. Several pedestrians on the left sidewalk walk forward along the street, staying off the roadway.", "hazard_reasoning": "There is a white truck stopped in the ego lane because of traffic congestion ahead. The driver should stop to avoid colliding with the halted truck and maintain safety given the slowdown ahead."}
{"id": "train_02146", "split": "train", "clip_key": "titan_clip_984_000450_movie", "source": {"subset": "titan", "scenario": "clip_984", "frame": "000450"}, "frames": ["titan_clip_984_000450_movie_t-3.jpg", "titan_clip_984_000450_movie_t-2.jpg", "titan_clip_984_000450_movie_t-1.jpg", "titan_clip_984_000450_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way carriageway and no median appears, the pavement is smooth, and traffic is light with clear sightlines ahead. An oncoming cyclist in a pink T-shirt rides on the right side toward the ego along the curb at a steady pace, becoming relevant because the lane is tight and the rider travels near the center line. Several bicycles are parked along the left curb outside shops, reducing the usable edge but remaining stationary.", "hazard_reasoning": "There is a cyclist wearing a pink T-shirt and cycling on the right side of the road, toward the ego car. Driver should slow down to maintain a safe distance as the cyclist moves toward the vehicle's path."}
{"id": "train_02147", "split": "train", "clip_key": "titan_clip_922_000102_movie", "source": {"subset": "titan", "scenario": "clip_922", "frame": "000102"}, "frames": ["titan_clip_922_000102_movie_t-3.jpg", "titan_clip_922_000102_movie_t-2.jpg", "titan_clip_922_000102_movie_t-1.jpg", "titan_clip_922_000102_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow undivided urban street with smooth pavement runs between close buildings; traffic is light and no opposing vehicles are visible. A pedestrian in a white shirt and black pants walks ahead along the left side away from the ego vehicle, close to the travel path. Several vehicles are parked along the left curb, including a white van protruding slightly into the lane and narrowing clearance near the pedestrian. No signals or posted speeds are apparent, and no other moving road users stand out.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the left side of the road, away from the ego car. The pedestrian could veer into the lane and obstruct the vehicle's path, so the driver should manoeuvre around them to maintain a safe distance."}
{"id": "train_02148", "split": "train", "clip_key": "2020-0210-155354_001085_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "001085"}, "frames": ["2020-0210-155354_001085_movie_t-3.jpg", "2020-0210-155354_001085_movie_t-2.jpg", "2020-0210-155354_001085_movie_t-1.jpg", "2020-0210-155354_001085_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the stopped white van", "environment_perception": "An urban commercial street in Japan shows a two-way road with one lane in each direction, no median, smooth pavement, and slow to moderate flow near a zebra crossing. A white car directly ahead in the ego lane rolls slowly toward the crosswalk, setting the pace. To the right, an oncoming taxi continues straight in its lane past the crossing. A white van is stopped along the left curb just beyond the crosswalk, occupying the roadside but not intruding into the lane. Pedestrians line both sidewalks near the crossing, several waiting at the curb and possibly about to step out.", "hazard_reasoning": "There is a white van stopped at the left side of the road. This stationary vehicle may encroach on the lane and pose a collision risk, so the driver should manoeuvre around it."}
{"id": "train_02149", "split": "train", "clip_key": "2020-0203-114632_093724_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "093724"}, "frames": ["2020-0203-114632_093724_movie_t-3.jpg", "2020-0203-114632_093724_movie_t-2.jpg", "2020-0203-114632_093724_movie_t-1.jpg", "2020-0203-114632_093724_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided two-way road runs under an elevated structure, with a single left-hand lane for the ego direction, a raised planted median to the left, smooth pavement, and light traffic. A white van ahead in the ego lane continues forward and opens the gap as the road ahead is clear. No other moving vehicles, pedestrians, or cyclists are visible near the ego path. A narrow shoulder and fence line the right edge beside support columns.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02150", "split": "train", "clip_key": "2020-0228-150133_076893_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "076893"}, "frames": ["2020-0228-150133_076893_movie_t-3.jpg", "2020-0228-150133_076893_movie_t-2.jpg", "2020-0228-150133_076893_movie_t-1.jpg", "2020-0228-150133_076893_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes and a painted buffer runs past apartment buildings; the asphalt looks smooth and traffic is heavy and slow. The ego travels in the left lane while oncoming traffic is visible on the far side of the roadway to the right. Directly ahead, a silver hatchback is stopped in the ego lane because of congestion, holding the ego vehicle. To the right, a large box truck in the adjacent lane creeps forward beside and slightly ahead of the ego, constraining any lane change and partly blocking the view ahead. Farther ahead, a queue of vehicles continues around a gentle right curve at low speed. A no-stopping sign stands on the left sidewalk.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane in front of the ego car, because of traffic congestion. This stationary vehicle in congested traffic poses a rear-end collision risk, so you should stop to maintain a safe distance."}
{"id": "train_02151", "split": "train", "clip_key": "2020-0127-132751_037523_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "037523"}, "frames": ["2020-0127-132751_037523_movie_t-3.jpg", "2020-0127-132751_037523_movie_t-2.jpg", "2020-0127-132751_037523_movie_t-1.jpg", "2020-0127-132751_037523_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the black hatchback", "environment_perception": "An urban multi-lane arterial with fresh pavement and a bollard-lined median on the right carries moderate traffic toward a signalized intersection. A black hatchback directly ahead in the ego lane drives toward the crosswalk and slows with the forming queue, setting the ego vehicle's pace. A white box truck slightly ahead in the lane to the left continues straight and also decelerates near the stop line, traveling parallel to the ego path. Oncoming cars on the right side move through their lanes past the intersection, separated by the median and not interacting with the ego lane. A pedestrian waits on the far-side sidewalk near the corner.", "hazard_reasoning": "There is a black hatchback driving in the ego lane. The black hatchback could change lanes or slow unexpectedly, so maintain awareness to avoid a potential cut-in or sudden deceleration."}
{"id": "train_02152", "split": "train", "clip_key": "2020-0220-102630_055341_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "055341"}, "frames": ["2020-0220-102630_055341_movie_t-3.jpg", "2020-0220-102630_055341_movie_t-2.jpg", "2020-0220-102630_055341_movie_t-1.jpg", "2020-0220-102630_055341_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with three lanes in the same direction and a guardrail at the right; the pavement is smooth and traffic is heavy, slowing toward a junction. A yellow van ahead in the ego lane slows because of congestion ahead and constrains the ego car's pace. A silver sedan in the lane to the right of the van creeps forward alongside, moving in parallel with limited space between vehicles. A silver hatchback beside the ego on the far right lane advances slowly near a painted merge area. Directional signs ahead indicate straight or right movements.", "hazard_reasoning": "There is a yellow van slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance as vehicles ahead are reducing speed due to congestion."}
{"id": "train_02153", "split": "train", "clip_key": "titan_clip_1115_000102_movie", "source": {"subset": "titan", "scenario": "clip_1115", "frame": "000102"}, "frames": ["titan_clip_1115_000102_movie_t-3.jpg", "titan_clip_1115_000102_movie_t-2.jpg", "titan_clip_1115_000102_movie_t-1.jpg", "titan_clip_1115_000102_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A dense urban commercial street with a single narrow lane and brick paving runs between tall buildings; there is no median and traffic is light. A white flatbed truck ahead near the left curb stands partially in the lane with cargo on its bed, constraining the ego vehicle's pace. Two pedestrians are in front of the ego car on the right side of the lane, walking away along the curb and close to the travel path. Green traffic cones line the left edge and further narrow the lane as shopfronts and signs pass close on the right.", "hazard_reasoning": "There are two pedestrians in front of the ego car to the right side of the lane, wearing white pants and a cap, walking away from the ego car. The pedestrians are close to the lane edge and could enter the vehicle's path, so the driver should carefully manoeuvre to avoid them."}
{"id": "train_02154", "split": "train", "clip_key": "titan_clip_865_000402_movie", "source": {"subset": "titan", "scenario": "clip_865", "frame": "000402"}, "frames": ["titan_clip_865_000402_movie_t-3.jpg", "titan_clip_865_000402_movie_t-2.jpg", "titan_clip_865_000402_movie_t-1.jpg", "titan_clip_865_000402_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "A narrow urban side street with shopfronts lines both sides, forming a two-way road without a centerline on smooth asphalt and light traffic. On the right edge ahead, two pedestrians wearing white and brown shirts, each carrying a handbag, walk toward the camera along the roadway edge and could drift into the travel lane. Slightly ahead near the center left, another pedestrian walks away within the lane, reducing the available space in the ego path. No oncoming vehicles are present. Storefront signs and parked bicycles sit close to the curbs, subtly narrowing the corridor but not blocking the lane, and no traffic signals are evident.", "hazard_reasoning": "There are two pedestrians wearing a white and a brown shirt, carrying handbags, walking on the right side of the road, towards the ego car. They could step into the roadway unexpectedly as they approach, so the driver should monitor their movement."}
{"id": "train_02155", "split": "train", "clip_key": "2020-0129-144857_059696_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "059696"}, "frames": ["2020-0129-144857_059696_movie_t-3.jpg", "2020-0129-144857_059696_movie_t-2.jpg", "2020-0129-144857_059696_movie_t-1.jpg", "2020-0129-144857_059696_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with one lane in each direction runs between mid-rise buildings, with a metal guardrail median on the right and smooth pavement; traffic is moderate and moves steadily. A white box truck travels ahead in the ego lane at a steady pace and briefly slows near other trucks farther ahead, constraining the ego vehicle's speed. On the opposite side of the median, oncoming cars, including a white van, pass toward the camera without interacting with the ego lane. Several vehicles are stopped along the left curbside lane but remain outside the through lane. No traffic signals or unusual signs are prominently visible, and no pedestrians or cyclists appear.", "hazard_reasoning": "No immediate hazards are apparent, and the roadway is clear. Driver can maintain normal driving behavior without additional caution."}
{"id": "train_02156", "split": "train", "clip_key": "2020-0227-153144_037931_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "037931"}, "frames": ["2020-0227-153144_037931_movie_t-3.jpg", "2020-0227-153144_037931_movie_t-2.jpg", "2020-0227-153144_037931_movie_t-1.jpg", "2020-0227-153144_037931_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth asphalt and roadside guardrails is seen, with traffic in the ego direction queued at an intersection. A white van is directly ahead in the ego lane and remains stopped for the red signal, holding the ego vehicle in place. Slightly ahead to the right, a light-colored van is also stationary in the adjacent lane in the same queue, parallel to the ego path. To the left, a black taxi and a box truck wait in the neighboring lane, limiting lateral room. Farther right, a few cars proceed slowly toward the junction while the opposite side of the roadway is not visible.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because the light is red. The white van has stopped due to the red light, so the driver must stop to avoid a rear-end collision."}
{"id": "train_02157", "split": "train", "clip_key": "titan_clip_350_000360_movie", "source": {"subset": "titan", "scenario": "clip_350", "frame": "000360"}, "frames": ["titan_clip_350_000360_movie_t-3.jpg", "titan_clip_350_000360_movie_t-2.jpg", "titan_clip_350_000360_movie_t-1.jpg", "titan_clip_350_000360_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban street with no centerline runs between mid-rise buildings; the pavement is smooth and traffic is light, though the open curbside space is partly occupied. Ahead on the left, a white box truck is parked with its rear open as it is being unloaded, encroaching into the lane and narrowing the passage. On the right, a silver car stands at the curb while two pedestrians linger beside it near the edge of the roadway, close to the ego path. Cones and a handcart sit around the truck, adding minor obstacles in the same area. A blue no-parking sign is posted on the left.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. This parked truck narrows the roadway and may obstruct oncoming traffic or pedestrians, so the driver should manoeuvre cautiously around it."}
{"id": "train_02158", "split": "train", "clip_key": "2020-0220-102630_047766_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "047766"}, "frames": ["2020-0220-102630_047766_movie_t-3.jpg", "2020-0220-102630_047766_movie_t-2.jpg", "2020-0220-102630_047766_movie_t-1.jpg", "2020-0220-102630_047766_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with two same-direction lanes runs beside a raised planted median on the left and a curb-separated service lane on the right; the pavement looks smooth and traffic flows slowly in moderate density. A white box truck directly ahead in the ego lane is slowing, constraining the ego car's pace. A white hatchback runs alongside in the left lane near the truck, moving slowly and temporarily blocking an easy move to the left. A white van travels slowly in the service lane on the right and remains separated by the curb, so it does not affect the ego lane. A roadside sign ahead shows a straight-ahead arrow with a no U-turn restriction.", "hazard_reasoning": "A white truck is slowing in front of the ego car in the ego lane. Since the truck is decelerating unexpectedly, the driver needs to reduce speed to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_02159", "split": "train", "clip_key": "2020-0204-150838_034658_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "034658"}, "frames": ["2020-0204-150838_034658_movie_t-3.jpg", "2020-0204-150838_034658_movie_t-2.jpg", "2020-0204-150838_034658_movie_t-1.jpg", "2020-0204-150838_034658_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with painted dividers and no physical median runs through a dense cityscape; the pavement is dry and smooth, and traffic is moderate with intermittent queueing. A white van directly ahead in the ego lane slows and rolls forward because congestion develops ahead, setting the ego car's pace. A black minivan to the left moves up and merges ahead, reducing the available gap. A box truck is stopped at the left curb in a side lane and remains out of the ego path. On the right side, cars approach in the oncoming lanes separated by paint.", "hazard_reasoning": "There is a white van slowing in front of the ego car, in the ego lane, because there is traffic congestion ahead. You should slow down to maintain a safe following distance and adapt to the reduced traffic flow."}
{"id": "train_02160", "split": "train", "clip_key": "titan_clip_501_000444_movie", "source": {"subset": "titan", "scenario": "clip_501", "frame": "000444"}, "frames": ["titan_clip_501_000444_movie_t-3.jpg", "titan_clip_501_000444_movie_t-2.jpg", "titan_clip_501_000444_movie_t-1.jpg", "titan_clip_501_000444_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban side street with interlocking brick pavement runs straight ahead, lacking a center divider, and traffic is light with no oncoming vehicles visible. A man in a white shirt and black pants crosses from the left curb to the right directly in front of the ego car, occupying the lane and setting the pace. On the right, a pedestrian holding an umbrella stands at the curb near a pole, watching the crossing. Farther ahead, a box truck is stopped in the same lane with a person walking near its rear, which constrains the available space. A silver car is parked along the left edge.", "hazard_reasoning": "There is a man, wearing a white shirt and black pants, crossing the street, from the left side to the right side, in front of the ego-car. The driver should slow down because the pedestrian may remain in the vehicle's path and could be struck if the vehicle continues at its current speed."}
{"id": "train_02161", "split": "train", "clip_key": "2020-0227-104226_058946_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "058946"}, "frames": ["2020-0227-104226_058946_movie_t-3.jpg", "2020-0227-104226_058946_movie_t-2.jpg", "2020-0227-104226_058946_movie_t-1.jpg", "2020-0227-104226_058946_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A suburban two-way street with left-side travel has one lane per direction, a solid yellow centerline, and dry, well-kept pavement; overall flow is light but bunches near an intersection ahead. A blue sedan directly ahead in the ego lane is stopped, holding the ego car because of traffic congestion ahead. Farther up the same lane, more vehicles queue near the junction, reinforcing the stoppage. A few parked cars sit off the left curb but remain outside the lane and do not impede movement. An overhead traffic signal is visible at the intersection, and roadside signs on the left include a posted 30 speed limit and a no-entry sign for a side street.", "hazard_reasoning": "There is a blue sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision under this situation."}
{"id": "train_02162", "split": "train", "clip_key": "titan_clip_1106_000534_movie", "source": {"subset": "titan", "scenario": "clip_1106", "frame": "000534"}, "frames": ["titan_clip_1106_000534_movie_t-3.jpg", "titan_clip_1106_000534_movie_t-2.jpg", "titan_clip_1106_000534_movie_t-1.jpg", "titan_clip_1106_000534_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian", "environment_perception": "An urban two-way street with one narrow lane each direction has smooth pavement, a red traffic-calming strip, and a small bollard median; traffic is light. A white van ahead in the ego lane moves away slowly along the left side, setting the pace. On the right near a corner, a pedestrian in a white shirt and black pants walks leftward across the mouth of the side street and may enter the travel lane. Another pedestrian in business attire passes close along the right sidewalk toward the camera without stepping into the road. A do-not-enter sign marks the right-side street, and the central bollards guide traffic to keep left.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, and walking on the right side of the road, to the left side. They could step into the lane unexpectedly, so the driver must be cautious of the pedestrian."}
{"id": "train_02163", "split": "train", "clip_key": "2020-0204-103442_041198_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "041198"}, "frames": ["2020-0204-103442_041198_movie_t-3.jpg", "2020-0204-103442_041198_movie_t-2.jpg", "2020-0204-103442_041198_movie_t-1.jpg", "2020-0204-103442_041198_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the bus.", "environment_perception": "An urban multi-lane arterial runs under an elevated roadway, with three same-direction lanes and smooth asphalt; traffic is heavy and largely stationary. A white highway bus directly ahead in the ego lane is stopped amid congestion, blocking the ego vehicle's path. To the left, a white box truck in the neighboring lane is also stopped beside the ego, preventing an easy merge. On the right, a silver minivan next to the bus is halted in the adjacent lane alongside the ego vehicle. No salient signals or posted speeds are visible.", "hazard_reasoning": "There is a white bus stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead. You should stop to avoid colliding with the stationary bus due to the congestion ahead."}
{"id": "train_02164", "split": "train", "clip_key": "2020-0227-104226_023729_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "023729"}, "frames": ["2020-0227-104226_023729_movie_t-3.jpg", "2020-0227-104226_023729_movie_t-2.jpg", "2020-0227-104226_023729_movie_t-1.jpg", "2020-0227-104226_023729_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial under an elevated structure has at least two same-direction lanes, a right-side guardrail, and smooth asphalt, and traffic moves at a moderate, steady pace. A white van ahead in the ego lane drives away from the ego car because the road ahead is clear. To the left, a city bus proceeds in the adjacent lane at similar speed, staying in its lane and not affecting the ego path. Farther ahead slightly left, a small boxy car and a motorcycle continue with the flow in the next lane. An overhead blue guide sign shows Route 20 with distances Kofu 123 km, Hachioji 35 km, and Ohara 1 km.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car, because the road ahead is clear. Following the vehicle ahead helps navigate the blind spot created by the overpass and ensures safe progression under limited visibility."}
{"id": "train_02165", "split": "train", "clip_key": "2020-0205-103411_058959_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "058959"}, "frames": ["2020-0205-103411_058959_movie_t-3.jpg", "2020-0205-103411_058959_movie_t-2.jpg", "2020-0205-103411_058959_movie_t-1.jpg", "2020-0205-103411_058959_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with no physical median runs between tall buildings, the pavement is clean and well marked, and traffic is heavy with mostly stop-and-go flow. A white delivery truck is stopped ahead in the ego lane due to congestion, holding the ego vehicle. To the right, a queue of passenger cars in the adjacent lanes creeps forward and packs tightly, making lane changes difficult. On the left sidewalk, pedestrians walk behind a railing and keep moving away from the roadway without interacting with traffic. Cones and scaffolding line the left curb, but they remain off the travel lane.", "hazard_reasoning": "There is a white truck stopped in the ego lane in front of the ego car, because of traffic congestion. The driver should stop to avoid a collision with the halted truck ahead."}
{"id": "train_02166", "split": "train", "clip_key": "titan_clip_1177_000240_movie", "source": {"subset": "titan", "scenario": "clip_1177", "frame": "000240"}, "frames": ["titan_clip_1177_000240_movie_t-3.jpg", "titan_clip_1177_000240_movie_t-2.jpg", "titan_clip_1177_000240_movie_t-1.jpg", "titan_clip_1177_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban back street in Japan is shown, a narrow two-way road with edge lines but no centerline, smooth pavement, and no vehicles, so traffic is light as the road bends gently right between close buildings and shrubs. Ahead on the right side of the road, a tall man wearing a striped shirt and white pants walks away along the curb, close to the travel lane and potentially entering the ego path. At the FamilyMart on the left, a person stands at the entrance by the curb, lingering at the edge of the roadway. Farther ahead near the bend, a small group of pedestrians walks in the middle of the road, and with no oncoming traffic visible they are the main elements constraining the vehicle's pace.", "hazard_reasoning": "There is a tall man, wearing a striped shirt and white pants, walking, on the right side of the road. The driver should carefully manoeuvre to maintain a safe distance from the pedestrian walking close to the roadway."}
{"id": "train_02167", "split": "train", "clip_key": "2020-0220-102630_085348_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "085348"}, "frames": ["2020-0220-102630_085348_movie_t-3.jpg", "2020-0220-102630_085348_movie_t-2.jpg", "2020-0220-102630_085348_movie_t-1.jpg", "2020-0220-102630_085348_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-end collision.", "environment_perception": "An urban divided arterial with two same-direction lanes runs straight on smooth pavement, bordered on the right by a metal fence that separates opposing traffic; overall flow is heavy and slow. A white van directly ahead in the ego lane is stopped because of congestion ahead, constraining the ego vehicle's pace. In the adjacent left lane, a black hatchback alongside creeps forward near the ego car, reducing room to change lanes. Farther ahead in that left lane, a small box truck inches along in the same queue and sets the pace for vehicles behind it. Chevron markings and a taper sit along the right edge beside the barrier.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision with the halted vehicle."}
{"id": "train_02168", "split": "train", "clip_key": "2020-0210-101957_086083_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "086083"}, "frames": ["2020-0210-101957_086083_movie_t-3.jpg", "2020-0210-101957_086083_movie_t-2.jpg", "2020-0210-101957_086083_movie_t-1.jpg", "2020-0210-101957_086083_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each way curves gently right on red, well-kept pavement, with light overall traffic and no close oncoming vehicles. A yellow truck directly ahead in the ego lane slows and sets the pace. A cyclist on the near left waits beside the small refuge island at the zebra crossing at the edge of the ego lane. Another cyclist farther ahead travels along the left shoulder in the same direction. A narrow median with bollards borders the crosswalk area, and visibility is open.", "hazard_reasoning": "There is a yellow truck slowing in front of the ego car, in the ego lane. The truck's deceleration and obstructed view may require the driver to slow down to maintain a safe distance and avoid collision."}
{"id": "train_02169", "split": "train", "clip_key": "titan_clip_759_000546_movie", "source": {"subset": "titan", "scenario": "clip_759", "frame": "000546"}, "frames": ["titan_clip_759_000546_movie_t-3.jpg", "titan_clip_759_000546_movie_t-2.jpg", "titan_clip_759_000546_movie_t-1.jpg", "titan_clip_759_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with one narrow lane each way and a dashed centerline is shown; the worn pavement has patches and vehicle flow is light while foot traffic is heavy. A pedestrian in a white shirt stands at the right edge by a shopfront close to the lane. Ahead, a large group of pedestrians walks across and along the roadway in front of the ego vehicle, occupying the lane. On the left, a black car is stopped at the curb with its front partly in the lane, reducing the available width. Orange cones line the right-hand storefronts, narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and standing on the right side of the road. The driver should carefully manoeuvre around the pedestrian to avoid a potential collision under these conditions."}
{"id": "train_02170", "split": "train", "clip_key": "2020-0204-150838_034255_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "034255"}, "frames": ["2020-0204-150838_034255_movie_t-3.jpg", "2020-0204-150838_034255_movie_t-2.jpg", "2020-0204-150838_034255_movie_t-1.jpg", "2020-0204-150838_034255_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane intersection with worn zebra markings comes into view, with no median and moderate two-way traffic; the pavement looks dry and the flow is steady. A white van ahead cuts in from the left lane into the ego lane directly in front and continues through the intersection, becoming the vehicle the ego car must follow. To the right, another white van travels parallel in the adjacent lane, moving straight and keeping close enough to limit room on that side. Farther right, a black car proceeds through the junction in its lane without affecting the ego path. Several pedestrians wait on the sidewalks near the crosswalks, remaining clear of the roadway.", "hazard_reasoning": "There is a white van cutting in from the left lane to the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a possible collision."}
{"id": "train_02171", "split": "train", "clip_key": "2020-0203-154554_079853_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "079853"}, "frames": ["2020-0203-154554_079853_movie_t-3.jpg", "2020-0203-154554_079853_movie_t-2.jpg", "2020-0203-154554_079853_movie_t-1.jpg", "2020-0203-154554_079853_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "A tree-lined urban arterial with two lanes in the ego direction and a chevron-marked center buffer has dry, intact pavement, and traffic flows in heavy stop-and-go. A white sedan directly ahead in the ego lane is stopped because congestion stacks up ahead, holding the ego car. In the adjacent left lane, a black sedan alongside creeps forward at similar speed, remaining parallel and occasionally inching past in the queue. Farther ahead, several vans and cars queue across both lanes and move intermittently, setting the pace for the stream. Low sun ahead produces glare, reducing contrast of distant vehicles and signs.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary vehicle in the lane."}
{"id": "train_02172", "split": "train", "clip_key": "titan_clip_911_000240_movie", "source": {"subset": "titan", "scenario": "clip_911", "frame": "000240"}, "frames": ["titan_clip_911_000240_movie_t-3.jpg", "titan_clip_911_000240_movie_t-2.jpg", "titan_clip_911_000240_movie_t-1.jpg", "titan_clip_911_000240_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban commercial street has a single narrow lane with no divider, worn pavement, and very slow flow due to activity in the roadway. A woman on a bicycle crosses right to left directly across the ego lane in front of the vehicle. A white van ahead in the same direction is stopped or inching forward, partly blocking the lane and setting the pace. Several pedestrians on the right edge walk along the carriageway and drift toward the lane, potentially entering the path. Parked bicycles line both curbs, further tightening the available space.", "hazard_reasoning": "There is a lady, wearing a black t-shirt and black pants, cycling, from the right side to the left side of the road. The driver should slow down because the cyclist is crossing into the lane and may require additional space and reaction time."}
{"id": "train_02173", "split": "train", "clip_key": "2020-0207-151349_008452_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_008452_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_008452_movie_t-3_augB1.jpg", "2020-0207-151349_008452_movie_t-2_augB1.jpg", "2020-0207-151349_008452_movie_t-1_augB1.jpg", "2020-0207-151349_008452_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist", "environment_perception": "A narrow two-way suburban road curves right past an entrance lined with bollards; the pavement is dry and smooth, and traffic is very light with no motor vehicles in view. A painted median gore separates the curve from the entrance area. Ahead, a cyclist in a brown coat carrying a backpack rides from the left edge across the lane toward the entrance, crossing the ego vehicle's path and constraining its approach. Slightly farther ahead, a second cyclist also moves rightward across in front and clears the lane by the bollards. A blue pedestrian crossing sign stands on the right, and bright sun glare washes the upper right of the scene.", "hazard_reasoning": "There is a cyclist in a brown coat, carrying a backpack, cycling on the left side of the road, away from the ego car. Yielding is necessary to allow the cyclist to pass safely and prevent a collision."}
{"id": "train_02174", "split": "train", "clip_key": "titan_clip_113_000318_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_113_000318_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_113_000318_movie_t-3_augB1.jpg", "titan_clip_113_000318_movie_t-2_augB1.jpg", "titan_clip_113_000318_movie_t-1_augB1.jpg", "titan_clip_113_000318_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street without a centerline runs between close-set buildings, the ego vehicle proceeding along the left side on smooth pavement with very light traffic. Ahead, a pedestrian in a beige shirt walks in the middle of the roadway away from the ego vehicle, occupying the ego path and effectively setting the pace. On the right, another pedestrian moves along the sidewalk near shop signs and keeps to the curb with no immediate interaction. No traffic signals or vehicles are visible, and shopfront displays and bags along the curbsides slightly constrict the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a beige shirt, walking in the middle of the road, away from the ego car. The pedestrian's position in the roadway increases collision risk, so the driver should slow down."}
{"id": "train_02175", "split": "train", "clip_key": "2020-0226-101332_078446_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "078446"}, "frames": ["2020-0226-101332_078446_movie_t-3.jpg", "2020-0226-101332_078446_movie_t-2.jpg", "2020-0226-101332_078446_movie_t-1.jpg", "2020-0226-101332_078446_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial with red pavement and channelized markings runs between guardrails and construction fencing, and traffic is heavy and slow before beginning to creep forward. A black van directly ahead in the ego lane accelerates as the flow starts moving, setting the pace for the ego vehicle. In the right adjacent lane a black taxi is slightly ahead and moves slowly alongside, staying within its lane. In the left lane a white wagon ahead creeps forward and remains in lane. Cranes and a work zone line the right side and pedestrians stand behind barriers on the left, while overhead signs and a pedestrian bridge appear ahead.", "hazard_reasoning": "There is a black van accelerating in the ego lane because traffic has started moving forward. Since the traffic light has likely turned green, the driver should start moving promptly to maintain traffic flow and avoid impeding other vehicles."}
{"id": "train_02176", "split": "train", "clip_key": "2020-0204-103442_055302_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "055302"}, "frames": ["2020-0204-103442_055302_movie_t-3.jpg", "2020-0204-103442_055302_movie_t-2.jpg", "2020-0204-103442_055302_movie_t-1.jpg", "2020-0204-103442_055302_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes and a narrow curbside lane runs on smooth pavement without a physical median, and traffic is moderate with brief slowdowns ahead. Ahead in the ego lane, a black sedan slows because vehicles queue farther up, constraining the ego car's pace. In the right adjacent lane, another black sedan travels slightly ahead at a steady speed while keeping its lane. On the far right, oncoming cars pass in their lanes and stay separated from the ego path. A round sign shows a 50 speed limit. Tree-lined sidewalks with guardrails border the roadway and no hazards are visible.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. You should slow down to match the reduced speed and maintain a safe following distance."}
{"id": "train_02177", "split": "train", "clip_key": "titan_clip_330_000948_movie", "source": {"subset": "titan", "scenario": "clip_330", "frame": "000948"}, "frames": ["titan_clip_330_000948_movie_t-3.jpg", "titan_clip_330_000948_movie_t-2.jpg", "titan_clip_330_000948_movie_t-1.jpg", "titan_clip_330_000948_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow shared lane is paved with block stones, lacks markings or a median, and carries light, slow traffic. A pedestrian in a striped T-shirt and black pants is ahead of the ego vehicle, crossing the lane from the right side to the left across the vehicle's path. Farther ahead, a motor scooter travels straight away along the center of the lane, effectively leading the ego vehicle. Additional pedestrians walk along both curbs near the storefronts on the left and right, moving in both directions close to the lane edge and reducing clearance. A corner convex mirror stands on the left at a storefront entrance.", "hazard_reasoning": "There is a pedestrian wearing striped t-shirt and black pants, in front of the ego car, crossing the street to the left side. The driver should slow down to safely yield to the crossing pedestrian."}
{"id": "train_02178", "split": "train", "clip_key": "titan_clip_558_000336_movie", "source": {"subset": "titan", "scenario": "clip_558", "frame": "000336"}, "frames": ["titan_clip_558_000336_movie_t-3.jpg", "titan_clip_558_000336_movie_t-2.jpg", "titan_clip_558_000336_movie_t-1.jpg", "titan_clip_558_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single shared lane and no divider runs between storefronts; the pavement is smooth and traffic is light. A bicyclist ahead in the center rides away from the camera and effectively sets the pace in the ego path. On the left, a pedestrian wearing a gray shirt and carrying a purse walks toward the ego vehicle in the roadway because another pedestrian is on the left shoulder, and this person may edge further into the lane. On the right edge, another pedestrian ahead walks in the same direction close to the curb, narrowing the usable space for passing. Storefront signs, cones, and stacked items protrude near the curbs and slightly constrict the lane.", "hazard_reasoning": "There is a pedestrian carrying a purse, wearing a gray shirt, and walking on the left side of the road, towards the ego car, because of another pedestrian on the left shoulder. The pedestrian is entering the vehicle's path unexpectedly, increasing collision risk; the driver should slow down to maintain safety."}
{"id": "train_02179", "split": "train", "clip_key": "titan_clip_619_000426_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_619_000426_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_619_000426_movie_t-3_augB1.jpg", "titan_clip_619_000426_movie_t-2_augB1.jpg", "titan_clip_619_000426_movie_t-1_augB1.jpg", "titan_clip_619_000426_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow urban street with a single lane, no centerline, and smooth pavement runs between close storefronts; traffic is very light with no moving vehicles. A pedestrian carrying a suitcase is directly ahead in the lane, walking and then stopping in front of the ego car because there is effectively no sidewalk, so he controls the car's pace. Another pedestrian farther ahead along the right edge walks toward the camera beside the shops and could drift into the lane. The edges are cluttered with parked bicycles, planters, and a line of orange cones on the left that further squeezes the roadway.", "hazard_reasoning": "A pedestrian carrying a suitcase is walking and stopping in the middle of the road, in front of the ego car, because there is no sidewalk. The driver should yield to this pedestrian to avoid collision."}
{"id": "train_02180", "split": "train", "clip_key": "titan_clip_393_000060_movie", "source": {"subset": "titan", "scenario": "clip_393", "frame": "000060"}, "frames": ["titan_clip_393_000060_movie_t-3.jpg", "titan_clip_393_000060_movie_t-2.jpg", "titan_clip_393_000060_movie_t-1.jpg", "titan_clip_393_000060_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban side street with a single narrow lane and interlocking brick pavement runs between buildings; there is no median or centerline and traffic is light. The surface is smooth and dry as the vehicle proceeds straight. Ahead on the left, a black van is parked at the curb while being unloaded, narrowing the lane and constraining the path past it. A pedestrian in the mid-foreground walks from the left diagonally into the roadway and may enter the ego lane. On the right, another pedestrian steps off the sidewalk and continues along the edge toward the camera, reducing clearance. Farther ahead, several pedestrians walk along both sides near storefronts.", "hazard_reasoning": "There is a black van parked on the left side of the road, because it is being unloaded. The driver should manoeuvre carefully around the unloading van to avoid collision."}
{"id": "train_02181", "split": "train", "clip_key": "titan_clip_159_000366_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_159_000366_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_159_000366_movie_t-3_augB1.jpg", "titan_clip_159_000366_movie_t-2_augB1.jpg", "titan_clip_159_000366_movie_t-1_augB1.jpg", "titan_clip_159_000366_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with no clear lane markings and smooth pavement shows very light motor traffic as pedestrians use the roadway. Ahead in the middle of the road, a woman in a blue T-shirt and jeans walks away from the ego vehicle, occupying the travel path and constraining its pace. Slightly ahead to the left, a backpacked person with a sun umbrella walks along the roadway and could drift into the ego lane. On the right edge near the curb, a man with a backpack walks forward beside shopfronts and remains close to the lane. No vehicles are visible in the same direction or oncoming, and dense storefront signs and poles line both sides, narrowing the corridor.", "hazard_reasoning": "There is a woman wearing a blue T-shirt and jeans and waking in the middle of the road, away from the ego car. The driver should slow down to anticipate her crossing ahead and avoid a collision."}
{"id": "train_02182", "split": "train", "clip_key": "2020-0127-132751_056824_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "056824"}, "frames": ["2020-0127-132751_056824_movie_t-3.jpg", "2020-0127-132751_056824_movie_t-2.jpg", "2020-0127-132751_056824_movie_t-1.jpg", "2020-0127-132751_056824_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the turning hatchback", "environment_perception": "An urban, multi-lane two-way street approaches a signalized intersection; the pavement is dry and smooth, traffic is moderate, and a short bollard island forms a divider on the right. To the left front, a white hatchback turns left into the near-side left lane, merging ahead of the ego vehicle. Directly ahead, a silver sedan proceeds slowly in the same lane and constrains the ego vehicle's pace. Farther ahead to the right, a red SUV turns right into a side street and moves out of the through lane. Oncoming vehicles travel in the opposite lanes to the right.", "hazard_reasoning": "There is a white hatchback turning left into the left lane. It may merge into your lane unexpectedly, so be aware."}
{"id": "train_02183", "split": "train", "clip_key": "2020-0129-144857_059216_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "059216"}, "frames": ["2020-0129-144857_059216_movie_t-3.jpg", "2020-0129-144857_059216_movie_t-2.jpg", "2020-0129-144857_059216_movie_t-1.jpg", "2020-0129-144857_059216_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way overpass with one lane per direction runs between high-rise buildings, divided by a low concrete median; the pavement is dry and intact with a transverse rumble strip near the camera, and traffic is moderate with a steadier oncoming stream. A white truck ahead in the ego lane drives away downhill, and the ego car follows at a distance as it sets the pace. In the opposite lane to the right, a silver minivan approaches steadily, followed by several cars that continue straight and remain separated by the median. Noise barriers line both sides, and no pedestrians or cyclists appear.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The driver should be aware of the truck ahead in case it slows down or changes speed unexpectedly."}
{"id": "train_02184", "split": "train", "clip_key": "2020-0131-135401_009462_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "009462"}, "frames": ["2020-0131-135401_009462_movie_t-3.jpg", "2020-0131-135401_009462_movie_t-2.jpg", "2020-0131-135401_009462_movie_t-1.jpg", "2020-0131-135401_009462_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "The scene is an urban, narrow two-way street with one lane each way divided by a solid yellow line; the pavement is dry and traffic is light. A white box truck directly ahead in the ego lane remains stopped at the red signal, holding the ego vehicle's pace. A pedestrian on the left sidewalk walks forward parallel to the road, staying clear of the carriageway. An oncoming white car approaches near the intersection in the opposite lane at low speed and proceeds without conflict.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to avoid a collision with the halted vehicle and comply with the red signal."}
{"id": "train_02185", "split": "train", "clip_key": "titan_clip_487_000330_movie", "source": {"subset": "titan", "scenario": "clip_487", "frame": "000330"}, "frames": ["titan_clip_487_000330_movie_t-3.jpg", "titan_clip_487_000330_movie_t-2.jpg", "titan_clip_487_000330_movie_t-1.jpg", "titan_clip_487_000330_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "'Slow down for pedestrians ahead'", "environment_perception": "A narrow urban street with no centerline is bordered by buildings on the left and a long construction wall on the right; the pavement looks smooth and there are no vehicles, so traffic is light. Near the right edge, two pedestrians walk toward the ego car along the wall, staying close to the travel lane and narrowing space. Ahead on the left edge, a pedestrian wearing a white T-shirt and a backpack walks away from the ego car, with a couple of others further ahead doing the same. A large 20 speed marking is painted on the roadway, and the construction frontage and bins by the left curb further constrict the corridor.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt, carrying a backpack, and walking, on the left side of the road, away from the ego-car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should slow down to maintain safety."}
{"id": "train_02186", "split": "train", "clip_key": "2020-0205-103411_121206_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "121206"}, "frames": ["2020-0205-103411_121206_movie_t-3.jpg", "2020-0205-103411_121206_movie_t-2.jpg", "2020-0205-103411_121206_movie_t-1.jpg", "2020-0205-103411_121206_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes and a right-side taper runs between mid-rise buildings, the pavement smooth and traffic moderate as vehicles head toward an overpass. A white van ahead in the ego lane drives away from the ego car, maintaining a steady gap and guiding the flow. To the right, a dark van in the adjacent lane proceeds at similar speed, remaining parallel without merging. Farther ahead near the overpass, another white van continues straight in the same stream. Parked cars line the right curb and narrow the usable space on that side, and strong sun glare along with the approaching overpass slightly limits distant visibility.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02187", "split": "train", "clip_key": "2020-0131-135401_034543_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "034543"}, "frames": ["2020-0131-135401_034543_movie_t-3.jpg", "2020-0131-135401_034543_movie_t-2.jpg", "2020-0131-135401_034543_movie_t-1.jpg", "2020-0131-135401_034543_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the white sedan.", "environment_perception": "An urban intersection on a narrow two-lane road with one lane each way appears, the pavement is clean and smooth, and traffic is light. A white car ahead in the ego lane remains stopped at the line just as the overhead signal turns green, momentarily holding the ego vehicle. On the right at the zebra crossing, a cyclist rides slowly across toward the ego side and may enter the ego lane. In the oncoming lane beyond the intersection, a small white truck proceeds slowly through the junction without affecting the ego path.", "hazard_reasoning": "There is a white sedan stopped in front of the ego-car, in the ego lane, because of the traffic light having just changed from red to green. Driver should stop because the vehicle ahead remains stationary despite the green light, reducing safe following distance and increasing collision risk."}
{"id": "train_02188", "split": "train", "clip_key": "2020-0207-101955_074762_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "074762"}, "frames": ["2020-0207-101955_074762_movie_t-3.jpg", "2020-0207-101955_074762_movie_t-2.jpg", "2020-0207-101955_074762_movie_t-1.jpg", "2020-0207-101955_074762_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban corridor with one lane per direction runs between tall noise walls, bordered by temporary concrete barriers; the pavement is smooth and traffic in the ego lane is slow. A blue flatbed truck directly ahead in the ego lane slows as it follows a truck further ahead, so it constrains the ego car's pace. The white box truck farther ahead in the same lane also slows, creating the queue behind it. In the opposite direction to the right, a blue truck and a white van approach steadily behind the barrier and remain separated from the ego lane.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The blue truck's sudden deceleration could force the driver to brake abruptly to avoid a collision."}
{"id": "train_02189", "split": "train", "clip_key": "titan_clip_387_000234_movie", "source": {"subset": "titan", "scenario": "clip_387", "frame": "000234"}, "frames": ["titan_clip_387_000234_movie_t-3.jpg", "titan_clip_387_000234_movie_t-2.jpg", "titan_clip_387_000234_movie_t-1.jpg", "titan_clip_387_000234_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban shopping street with brick paving and very narrow sidewalks has no centerline or median, operating as a single shared low-speed lane with light traffic. A white van ahead in the same direction moves away slowly along the middle, setting the pace. On the left edge, a pedestrian carrying a backpack walks away from the ego vehicle along the roadway because the sidewalk is narrow, potentially edging into the travel path. Two more pedestrians ahead near the center walk away and drift slightly right, reducing available space. A cyclist farther ahead approaches from the opposite direction near the middle of the street, narrowing the passing gap. Parked cars line the left, further constricting the corridor.", "hazard_reasoning": "There is a pedestrian carrying a backpack, walking on the left side of the road, away from the ego car, because of the narrow sidewalk. This pedestrian could step into the lane unexpectedly due to limited sidewalk space, so the driver should be aware of their presence."}
{"id": "train_02190", "split": "train", "clip_key": "2020-0205-152530_054802_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "054802"}, "frames": ["2020-0205-152530_054802_movie_t-3.jpg", "2020-0205-152530_054802_movie_t-2.jpg", "2020-0205-152530_054802_movie_t-1.jpg", "2020-0205-152530_054802_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial under an elevated roadway has two same-direction lanes with a curb and railing on the left; the pavement is smooth and traffic is slow but begins to ease. A white sedan directly ahead in the ego lane accelerates as space opens, pulling away and influencing the ego car's pace. In the adjacent right lane, a white van slightly ahead continues slowly in its lane, remaining parallel without encroaching. Farther ahead, a large box truck in the right lane moves sluggishly and had been part of the queue that constrained flow, but gaps are opening beyond it. Buildings and bare trees line the roadside, and no unusual signage or hazards are visible.", "hazard_reasoning": "There is a white sedan accelerating in the ego lane, in front of the ego car, because of traffic clearing ahead. The driver should start moving to keep pace with the clearing traffic and avoid holding up following vehicles."}
{"id": "train_02191", "split": "train", "clip_key": "titan_clip_659_000570_movie", "source": {"subset": "titan", "scenario": "clip_659", "frame": "000570"}, "frames": ["titan_clip_659_000570_movie_t-3.jpg", "titan_clip_659_000570_movie_t-2.jpg", "titan_clip_659_000570_movie_t-1.jpg", "titan_clip_659_000570_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped blue truck", "environment_perception": "A narrow urban undivided street with smooth pavement leads toward a small intersection ahead, and overall traffic is light. A blue truck is stopped on the left in the ego lane while being unloaded, with a worker at its open rear and a cart of boxes protruding into the roadway, narrowing the path and slowing the approach. Several pedestrians are ahead near the intersection, some crossing leftward across the ego vehicle's path, so their movement governs the vehicle's pace. A man stands on the right at a building driveway, waiting at the curb and potentially stepping toward the street. No other vehicles are moving in the same or oncoming direction.", "hazard_reasoning": "There is a blue truck stopped on the left side of the road, in the ego lane, because it is being unloaded. You should be aware of the stopped truck as it may obstruct your path and require you to adjust your position."}
{"id": "train_02192", "split": "train", "clip_key": "2020-0212-102546_073651_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "073651"}, "frames": ["2020-0212-102546_073651_movie_t-3.jpg", "2020-0212-102546_073651_movie_t-2.jpg", "2020-0212-102546_073651_movie_t-1.jpg", "2020-0212-102546_073651_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way road with one lane per direction is divided by a narrow raised median with shrubs and a fence, the pavement is dry and smooth, and traffic is light beside mid-rise apartments. Ahead in the ego lane, a yellow construction vehicle drives slowly and occupies the center of the lane, constraining the ego vehicle's pace. On the opposite carriageway to the right beyond the divider, a large white box truck and a black van approach in their lane without affecting the ego path.", "hazard_reasoning": "There is a yellow construction vehicle driving in the ego lane. The driver should follow the vehicle ahead to maintain a safe distance and avoid potential hazards around the obscured curve."}
{"id": "train_02193", "split": "train", "clip_key": "2020-0220-102630_028364_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "028364"}, "frames": ["2020-0220-102630_028364_movie_t-3.jpg", "2020-0220-102630_028364_movie_t-2.jpg", "2020-0220-102630_028364_movie_t-1.jpg", "2020-0220-102630_028364_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead.", "environment_perception": "An urban two-lane road with both lanes heading the same direction and no median is shown; the pavement is dry and traffic moves slowly in moderate flow. Ahead, a black scooter in the ego lane shifts right in front of the ego vehicle because roadworks narrow the left-side lane. Farther ahead, a large box truck occupies the right lane and travels slowly, constraining the pace of vehicles behind. A white car just to the right of the ego car continues straight in the right lane alongside the merge. Cones, barriers, and workers along the left curb define a construction area intruding into the ego lane.", "hazard_reasoning": "There is a black scooter changing lanes in front of the ego car, from the ego lane to the right lane, because of construction work in the ego lane. The scooter's unexpected maneuver reduces the available space ahead, so following the vehicle ahead at a safe distance provides time to react and avoid collision."}
{"id": "train_02194", "split": "train", "clip_key": "2020-0204-150838_058567_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "058567"}, "frames": ["2020-0204-150838_058567_movie_t-3.jpg", "2020-0204-150838_058567_movie_t-2.jpg", "2020-0204-150838_058567_movie_t-1.jpg", "2020-0204-150838_058567_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban single-lane expressway ramp runs under elevated structures, bounded by concrete barriers with smooth pavement, and overall traffic is heavy and slow. A gray coach bus directly ahead in the ego lane slows and brakes because of congestion ahead, controlling the ego car's pace. To the right, beyond a barrier, a queue of trucks and cars in a parallel lane crawls forward in the same direction without interacting with the ego lane. No pedestrians, cyclists, or oncoming traffic appear, and the narrow barriers create a constrained corridor but no additional obstacles.", "hazard_reasoning": "There is a gray bus slowing down in front of the ego car in the ego lane because of traffic congestion ahead. The bus is decelerating due to congestion ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_02195", "split": "train", "clip_key": "2020-0205-103411_094989_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "094989"}, "frames": ["2020-0205-103411_094989_movie_t-3.jpg", "2020-0205-103411_094989_movie_t-2.jpg", "2020-0205-103411_094989_movie_t-1.jpg", "2020-0205-103411_094989_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three lanes in the ego direction runs straight, with a shrub median on the right separating oncoming traffic; the pavement looks smooth and traffic is moderate and flowing. A white truck ahead in the ego lane steadily pulls away while continuing straight, creating a widening gap. A white van in the lane to the left draws level and then moves slightly ahead, remaining in its lane and relevant as it travels alongside the ego car. Farther ahead, several cars occupy the left lanes at similar speed, forming a moving queue that influences the overall pace. No prominent signals or hazards are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02196", "split": "train", "clip_key": "2020-0207-101955_116725_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "116725"}, "frames": ["2020-0207-101955_116725_movie_t-3.jpg", "2020-0207-101955_116725_movie_t-2.jpg", "2020-0207-101955_116725_movie_t-1.jpg", "2020-0207-101955_116725_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane road runs under an elevated expressway, with a chevron-marked shoulder separated by flexible bollards; the pavement is dry and smooth, and traffic is slow with heavy queues in the adjacent lanes. A blue sedan directly ahead in the ego lane slows because congestion develops up the road, constraining the ego car's pace. To the right, a long line of cars and trucks, including a silver box truck alongside, creeps forward or sits nearly stopped and may merge left into the ego lane. No unusual traffic signals or signs are salient, and no obstacles other than lane posts are present.", "hazard_reasoning": "There is a blue sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. You should slow down to maintain a safe following distance and adapt to the reduced speed of the vehicle ahead."}
{"id": "train_02197", "split": "train", "clip_key": "titan_clip_1277_000252_movie", "source": {"subset": "titan", "scenario": "clip_1277", "frame": "000252"}, "frames": ["titan_clip_1277_000252_movie_t-3.jpg", "titan_clip_1277_000252_movie_t-2.jpg", "titan_clip_1277_000252_movie_t-1.jpg", "titan_clip_1277_000252_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street lined with buildings has smooth pavement, no centerline, and light traffic that remains steady. On the left edge near the curb, a pedestrian wearing a white shirt and black pants with a backpack walks toward the ego vehicle along the roadside and may step into the travel path. Farther ahead near mid-block, another pedestrian moves from left to right across the roadway, briefly occupying the lane ahead. A small white car is visible far ahead in the center of the street traveling away in the same direction and remains distant.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a backpack, walking on the left side of the road, towards the ego car. The driver should manoeuvre carefully to avoid colliding with the pedestrian entering the travel lane."}
{"id": "train_02198", "split": "train", "clip_key": "titan_clip_493_000324_movie", "source": {"subset": "titan", "scenario": "clip_493", "frame": "000324"}, "frames": ["titan_clip_493_000324_movie_t-3.jpg", "titan_clip_493_000324_movie_t-2.jpg", "titan_clip_493_000324_movie_t-1.jpg", "titan_clip_493_000324_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "be aware of pedestrian walking ahead.", "environment_perception": "A quiet urban residential street is shown on a narrow two-way carriageway without a center line; the asphalt looks smooth and there are no vehicles, so traffic is light. Ahead on the left sidewalk, a pedestrian in light clothing walks away along the railings, rather than approaching on the right. Farther ahead near a marked pedestrian crossing, another person is by the curb and could step toward the lane. Bollards separate the walkway from the road, and there are no parked vehicles or obvious obstacles.", "hazard_reasoning": "There is a pedestrian wearing a white dress, walking toward the ego car, on the right side of the road. The driver should be aware because the pedestrian may step into the lane ahead."}
{"id": "train_02199", "split": "train", "clip_key": "2020-0220-102630_009522_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "009522"}, "frames": ["2020-0220-102630_009522_movie_t-3.jpg", "2020-0220-102630_009522_movie_t-2.jpg", "2020-0220-102630_009522_movie_t-1.jpg", "2020-0220-102630_009522_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection on a two-way road with smooth asphalt and no median, traffic flowing at a moderate pace among tall buildings. A silver sedan directly ahead in the ego lane is stopped at the intersection, waiting to turn right, which holds the ego car in place. An oncoming white sedan moves through the junction from the right-front, proceeding straight across the ego path and preventing the right-turning car from moving. Several pedestrians gather and walk along the sidewalks at the corners near the crosswalks, remaining clear of the roadway. Overhead traffic signals and street signage are visible above the center of the intersection.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, in the ego lane, because it is waiting to turn right. The driver must stop to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_02200", "split": "train", "clip_key": "2020-0212-102546_048367_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "048367"}, "frames": ["2020-0212-102546_048367_movie_t-3.jpg", "2020-0212-102546_048367_movie_t-2.jpg", "2020-0212-102546_048367_movie_t-1.jpg", "2020-0212-102546_048367_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs between mid-rise buildings, divided from oncoming lanes by a raised median; the pavement is smooth and traffic is light to moderate. Ahead in the ego lane, a gray van pulls away as the road stays clear, increasing the gap. Farther ahead in the left lane, a white bus continues straight beneath a pedestrian overpass and does not affect the ego lane. To the right beyond the median, an oncoming black sedan approaches in its lane without conflict. Overhead blue directional signs span the roadway.", "hazard_reasoning": "There is a gray van driving away from the ego car, in the ego lane, because the road ahead is clear, in front of the ego car. The van could brake unexpectedly, so the driver should follow the vehicle ahead and maintain a safe distance."}
{"id": "train_02201", "split": "train", "clip_key": "2020-0228-102841_047759_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "047759"}, "frames": ["2020-0228-102841_047759_movie_t-3.jpg", "2020-0228-102841_047759_movie_t-2.jpg", "2020-0228-102841_047759_movie_t-1.jpg", "2020-0228-102841_047759_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement runs past a fenced sidewalk on the left, and traffic is moderate, bunching near an intersection. A van directly ahead in the ego lane is stopped because the traffic signal ahead shows red, holding the ego vehicle. A motor scooter slightly ahead in the adjacent right lane slows to a stop in the queue, remaining near the lane line close to the ego lane. Farther ahead in that lane, a box truck also waits at the signal. Another small van to the right creeps forward beside the ego vehicle.", "hazard_reasoning": "There is a gray van stopped in the ego lane because of a red traffic light up ahead. Therefore, the driver should stop to avoid rear-ending the van."}
{"id": "train_02202", "split": "train", "clip_key": "titan_clip_211_000348_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_211_000348_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_211_000348_movie_t-3_augB1.jpg", "titan_clip_211_000348_movie_t-2_augB1.jpg", "titan_clip_211_000348_movie_t-1_augB1.jpg", "titan_clip_211_000348_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately.", "environment_perception": "The scene is an urban side street with a single narrow lane and no median; the dry pavement looks good and traffic is light, with delivery stops constraining flow. A white box truck is stopped ahead in the ego lane near the left curb, partially blocking the path and slowing progress. A pedestrian wearing a white shirt crosses in front of the ego car from left to right, moving from the left sidewalk across the lane near the truck and briefly occupying the ego path. Another person stands on the right sidewalk by a utility pole at the curb, remaining stationary. No traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, crossing the street in front of the ego car, from the left side to the right side. The driver should stop to avoid colliding with the pedestrian crossing ahead."}
{"id": "train_02203", "split": "train", "clip_key": "titan_clip_169_000750_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_169_000750_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_169_000750_movie_t-3_augB1.jpg", "titan_clip_169_000750_movie_t-2_augB1.jpg", "titan_clip_169_000750_movie_t-1_augB1.jpg", "titan_clip_169_000750_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene is an urban side street beneath a rail viaduct, a narrow two-way road without a median and with sound pavement; traffic is light and mostly pedestrian. Directly ahead, a tall man in a black suit crosses from the left sidewalk toward the right, walking across the ego lane and temporarily blocking the vehicle's path. On the left at the near crosswalk, another pedestrian waits by vending machines and faces the roadway, close enough to step into the lane. Farther ahead left, a person near a dark sedan steps off the curb and starts to cross diagonally, adding another conflict point. A single traffic cone and the viaduct wall line the right edge, tightening the available space.", "hazard_reasoning": "There is a tall man, wearing a black suit, crossing the street, from the left side to the right side of the road. The driver should slow down to avoid a potential collision with the pedestrian entering the vehicle's path."}
{"id": "train_02204", "split": "train", "clip_key": "titan_clip_298_000504_movie", "source": {"subset": "titan", "scenario": "clip_298", "frame": "000504"}, "frames": ["titan_clip_298_000504_movie_t-3.jpg", "titan_clip_298_000504_movie_t-2.jpg", "titan_clip_298_000504_movie_t-1.jpg", "titan_clip_298_000504_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban two-way street with one lane each direction and no median stretches ahead, the pavement smooth and traffic light as the ego-vehicle proceeds in the left lane. A cyclist wearing a cap and gray coat pushes her bicycle across from the left to the right directly in front of the ego-vehicle, moving slowly through the ego lane and constraining its pace. The opposing lane nearby shows no oncoming vehicles. Parked cars line the left curb in a small lot but stay outside the travel lane and do not interact.", "hazard_reasoning": "There is a female cyclist, wearing a cap and a gray coat, pushing her bike across the street from the left to the right side, directly in front of the ego-car. The cyclist is crossing directly in front of the vehicle, so the driver should carefully manoeuvre around her to avoid a collision."}
{"id": "train_02205", "split": "train", "clip_key": "2020-0204-150838_033786_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "033786"}, "frames": ["2020-0204-150838_033786_movie_t-3.jpg", "2020-0204-150838_033786_movie_t-2.jpg", "2020-0204-150838_033786_movie_t-1.jpg", "2020-0204-150838_033786_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban arterial lined with high-rise buildings carries heavy, slow traffic on dry pavement with clear centerline markings. A white van stopped in the ego lane directly ahead holds the ego car at a standstill. To the left, a black taxi in the adjacent lane inches forward alongside, constraining any lane change. To the right, another white van in the neighboring lane rolls slowly parallel and slightly ahead, leaving little merging space. A roadside direction sign on the left points toward Chuo Ward, but no traffic signals are prominent in view.", "hazard_reasoning": "There is a white van stopped n the ego lane, in front of the ego car. The driver should stop to avoid a collision with the halted van ahead."}
{"id": "train_02206", "split": "train", "clip_key": "2020-0210-101957_054123_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "054123"}, "frames": ["2020-0210-101957_054123_movie_t-3.jpg", "2020-0210-101957_054123_movie_t-2.jpg", "2020-0210-101957_054123_movie_t-1.jpg", "2020-0210-101957_054123_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction and double white center lines runs beneath a pedestrian overpass; the pavement looks smooth and traffic is moderate with a brief slowdown ahead. The ego car travels in the left lane, where a black hatchback directly ahead slows because of congestion farther up and constrains the ego vehicle's pace. On the right, oncoming traffic including a blue car passes steadily in its near lane, separated by the painted median. Overhead blue guide signs show route directions and distances around 300 m ahead.", "hazard_reasoning": "There is a black hatchback slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance given the congested traffic."}
{"id": "train_02207", "split": "train", "clip_key": "2020-0212-102546_067433_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "067433"}, "frames": ["2020-0212-102546_067433_movie_t-3.jpg", "2020-0212-102546_067433_movie_t-2.jpg", "2020-0212-102546_067433_movie_t-1.jpg", "2020-0212-102546_067433_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided boulevard with two same-direction lanes and a raised planted median has smooth pavement and slow, queuing traffic. Ahead in the ego lane, a gray sedan is stopped because of congestion, holding the ego vehicle's pace. Just beyond it, a small silver car in the same lane creeps forward in the queue and may soon enter the space ahead of the sedan. Farther ahead in the same lane, a loaded construction truck moves slowly, setting the pace for the line of vehicles. An overhead gantry sign spans the road, and the median separates opposing traffic from interacting with the scene.", "hazard_reasoning": "There is a gray sedan stopped in the ego lane, because of traffic congestion ahead. This indicates that traffic has come to a halt unexpectedly, so you must stop promptly to avoid a rear-end collision."}
{"id": "train_02208", "split": "train", "clip_key": "2020-0227-153144_025366_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "025366"}, "frames": ["2020-0227-153144_025366_movie_t-3.jpg", "2020-0227-153144_025366_movie_t-2.jpg", "2020-0227-153144_025366_movie_t-1.jpg", "2020-0227-153144_025366_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the van's lane change", "environment_perception": "An urban divided arterial with three lanes in the ego direction and a landscaped median is shown, the pavement dry and smooth as the road gently curves right with light to moderate traffic. A white van directly ahead in the ego lane changes left into the adjacent lane, moving out of the ego path. A large box truck ahead to the far left continues straight near the curb and occupies the lane the van merges into. Farther ahead, another small white van in the right lane proceeds straight at a steady pace without interacting with the ego vehicle. Oncoming lanes run separately beyond the median and no salient signals appear.", "hazard_reasoning": "There is a white van in front of the ego car, changing to the left lane from the ego lane. Be aware of the van's merging movement, as it may cut into your lane unexpectedly."}
{"id": "train_02209", "split": "train", "clip_key": "titan_clip_567_000546_movie", "source": {"subset": "titan", "scenario": "clip_567", "frame": "000546"}, "frames": ["titan_clip_567_000546_movie_t-3.jpg", "titan_clip_567_000546_movie_t-2.jpg", "titan_clip_567_000546_movie_t-1.jpg", "titan_clip_567_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians walking on the road", "environment_perception": "An urban shopping street with a single narrow brick-paved lane and no center line is flanked by storefronts; vehicle flow is light while foot traffic is moderate. On the left ahead, a pedestrian in a white T-shirt walks away from the ego car along the edge of the lane, setting the pace for the approach. On the right near the storefronts, a small group of pedestrians stands at the roadway edge, reducing clearance beside the vehicle's path. Farther ahead, several pedestrians proceed in the same direction along the middle of the lane, keeping the passage slow and careful. A parked bicycle and shop displays on the right further narrow the route, and a green school-route sign is posted on a pole.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, walking on the left side of the road, away from the ego car. The driver should be aware of pedestrians walking on the road since they may cross unexpectedly."}
{"id": "train_02210", "split": "train", "clip_key": "2020-0204-150838_015102_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "015102"}, "frames": ["2020-0204-150838_015102_movie_t-3.jpg", "2020-0204-150838_015102_movie_t-2.jpg", "2020-0204-150838_015102_movie_t-1.jpg", "2020-0204-150838_015102_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of black sedan's lane change", "environment_perception": "An urban divided arterial with three lanes in the ego direction and a planted median has dry, smooth pavement and moderate, steady traffic. Directly ahead in the center lane, a black sedan moves to the left lane, momentarily in front of the ego car before clearing its path. In the adjacent right lane, a white SUV travels alongside at a similar speed and maintains its lane. Farther ahead in the left lane, a white van proceeds with the flow. Oncoming traffic is visible beyond the median moving independently, and overhead directional signs span the roadway.", "hazard_reasoning": "There is a black sedan in front of the ego car, changing to the left lane. Because its lane change may cut into our path, the driver should be aware to avoid a potential collision."}
{"id": "train_02211", "split": "train", "clip_key": "titan_clip_230_000528_movie", "source": {"subset": "titan", "scenario": "clip_230", "frame": "000528"}, "frames": ["titan_clip_230_000528_movie_t-3.jpg", "titan_clip_230_000528_movie_t-2.jpg", "titan_clip_230_000528_movie_t-1.jpg", "titan_clip_230_000528_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with a single lane and brick pavement runs between tall buildings; there is no median, traffic is light, and the lane is partially obstructed by stopped vehicles on the right. A pedestrian dressed in black with a handbag walks away from the ego vehicle in the middle of the lane because the curbside is blocked, placing them in the ego path. Another pedestrian is at the right edge beside a white van, moving close to the roadway and potentially entering the lane. Farther ahead, a cyclist rides away near the center, which could constrain the pace. A large box truck and the white van are stopped on the right, narrowing the passage and creating a short blind area.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, a black cap, and black pants, carrying a handbag, and walking away from the ego car, in the middle of the road, because of the parked vehicle. This pedestrian is walking in the middle of the road due to the parked vehicle, requiring the driver to carefully manoeuvre to maintain a safe distance."}
{"id": "train_02212", "split": "train", "clip_key": "2020-0131-103016_043806_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "043806"}, "frames": ["2020-0131-103016_043806_movie_t-3.jpg", "2020-0131-103016_043806_movie_t-2.jpg", "2020-0131-103016_043806_movie_t-1.jpg", "2020-0131-103016_043806_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane signalized intersection on a two-way arterial with a central median and smooth pavement; traffic is light with wide gaps. Ahead near the center, a white van from the right side of the intersection turns into the ego lane in front of the car, merging into our path. Ahead left, a scooter rides through the intersection in the near lane, continuing straight and staying ahead of the ego vehicle. Far beyond the junction, a few cars travel in the same direction down the boulevard, while sparse oncoming traffic moves on the opposite side of the median.", "hazard_reasoning": "There is a white van turning into the ego lane, in front of the ego car, from the right side of the intersection. The white van is merging into your path, so you should follow the vehicle ahead to maintain a safe distance."}
{"id": "train_02213", "split": "train", "clip_key": "titan_clip_384_000330_movie", "source": {"subset": "titan", "scenario": "clip_384", "frame": "000330"}, "frames": ["titan_clip_384_000330_movie_t-3.jpg", "titan_clip_384_000330_movie_t-2.jpg", "titan_clip_384_000330_movie_t-1.jpg", "titan_clip_384_000330_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van.", "environment_perception": "An urban commercial street with a single marked lane in the ego direction has no median and worn pavement, and traffic is light with no oncoming flow visible. A black van is parked along the left curb just ahead, partially intruding into the lane and narrowing the passage. On the right sidewalk ahead, several pedestrians walk and pause near the curb by planters, potentially stepping toward the roadway as the car passes. On the left, two pedestrians stand outside a shop beside the parked van, and their position near the vehicle may bring them briefly into the lane. No other moving vehicles are immediately ahead.", "hazard_reasoning": "There is a black van parked on the left side of the road. The parked van may partially block the driving lane, requiring careful maneuvering to avoid collision."}
{"id": "train_02214", "split": "train", "clip_key": "2020-0214-102601_050969_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "050969"}, "frames": ["2020-0214-102601_050969_movie_t-3.jpg", "2020-0214-102601_050969_movie_t-2.jpg", "2020-0214-102601_050969_movie_t-1.jpg", "2020-0214-102601_050969_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial runs beneath an elevated expressway; the ego car is in the rightmost lane beside a guardrail on dry, well-kept pavement, and traffic is heavy and stop and go. A blue hatchback directly ahead in the ego lane slows and inches forward because of congestion, controlling the ego vehicle's pace. In the adjacent lane to the left, a tarp-covered light truck slightly ahead crawls with the queue and stays parallel to the ego lane. Farther left, several white cars line up and move slowly, extending the jam ahead. A roadside 40 speed limit sign is visible on the left, and no pedestrians, cyclists, or other hazards appear.", "hazard_reasoning": "There is a blue hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down because the hatchback's unexpected deceleration due to congestion reduces safe following distance."}
{"id": "train_02215", "split": "train", "clip_key": "titan_clip_648_000174_movie", "source": {"subset": "titan", "scenario": "clip_648", "frame": "000174"}, "frames": ["titan_clip_648_000174_movie_t-3.jpg", "titan_clip_648_000174_movie_t-2.jpg", "titan_clip_648_000174_movie_t-1.jpg", "titan_clip_648_000174_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential two-way street with no centerline stretches ahead, bordered by close-set buildings and narrow sidewalks; the asphalt is smooth and traffic is light with no vehicles present. On the right side ahead, a pedestrian wearing a blue uniform and cap carrying a handbag walks away along the edge of the roadway, partly in the ego lane and potentially constraining the vehicle's path. Just beyond him on the right, another person proceeds forward on the sidewalk, parallel to the ego path and staying outside the lane. Farther ahead on the left sidewalk, a pedestrian holding an umbrella walks away, remaining separate from the travelway.", "hazard_reasoning": "There is a pedestrian wearing a blue uniform and cap, carrying a handbag, walking on the right side of the road, away from the ego car. The pedestrian could step into the roadway unexpectedly, so the driver should slow down to maintain safety."}
{"id": "train_02216", "split": "train", "clip_key": "2020-0207-151349_008471_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "008471"}, "frames": ["2020-0207-151349_008471_movie_t-3.jpg", "2020-0207-151349_008471_movie_t-2.jpg", "2020-0207-151349_008471_movie_t-1.jpg", "2020-0207-151349_008471_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each direction curves right with painted channelization and no median; the asphalt is dry, sun glare is strong, and traffic is light with no oncoming vehicles visible. Ahead on the left edge, a cyclist wearing a brown jacket and a backpack rides away from the ego vehicle along the curb. Slightly ahead in front of the lane, another cyclist in dark clothing pedals rightward across the mouth of a side road and may enter the ego path. A children-crossing warning sign stands on the right verge, and short bollards line the roadside.", "hazard_reasoning": "There is a cyclist wearing a brown jacket, carrying a backpack, and cycling on the left side of the road, away from the ego car. The cyclist may continue along the lane and could enter the vehicle's path, so slowing down reduces the risk of a collision."}
{"id": "train_02217", "split": "train", "clip_key": "2020-0207-151349_064817_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "064817"}, "frames": ["2020-0207-151349_064817_movie_t-3.jpg", "2020-0207-151349_064817_movie_t-2.jpg", "2020-0207-151349_064817_movie_t-1.jpg", "2020-0207-151349_064817_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated two-way road with one lane per direction runs between high sound barriers, divided by a yellow centerline with low raised separators; pavement is smooth and traffic is light. Ahead in the ego lane, a white van moves forward in front of the ego car and gradually pulls away, effectively setting the ego vehicle's pace. To the right, in the oncoming lane, a black sedan approaches near the centerline and then passes by, remaining in its lane as opposing traffic. A few distant vehicles appear beyond the ramp but do not affect the scene.", "hazard_reasoning": "There is a white van moving forward in the ego lane in front of the ego car. The white van ahead may brake suddenly or obscure the road, so the driver should maintain a safe following distance."}
{"id": "train_02218", "split": "train", "clip_key": "2020-0204-103442_039318_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "039318"}, "frames": ["2020-0204-103442_039318_movie_t-3.jpg", "2020-0204-103442_039318_movie_t-2.jpg", "2020-0204-103442_039318_movie_t-1.jpg", "2020-0204-103442_039318_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of adjacent hatchback merging", "environment_perception": "An urban arterial runs under an elevated expressway with three same-direction lanes and a right-side guardrail; the pavement appears smooth and traffic moves at a moderate, steady pace. A white box truck ahead in the ego lane continues straight at a constant speed, setting the ego vehicle's following distance. A white hatchback drives alongside the ego car in the right lane, moving parallel and limiting space for a rightward lane change. Farther ahead, several cars in adjacent lanes proceed under the viaduct without abrupt maneuvers.", "hazard_reasoning": "There is a white hatchback driving alongside the ego car, in the right lane. The vehicle adjacent could merge unexpectedly into your lane, so be aware to avoid a potential side collision."}
{"id": "train_02219", "split": "train", "clip_key": "2020-0207-151349_022118_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "022118"}, "frames": ["2020-0207-151349_022118_movie_t-3.jpg", "2020-0207-151349_022118_movie_t-2.jpg", "2020-0207-151349_022118_movie_t-1.jpg", "2020-0207-151349_022118_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road between tall buildings appears under strong sun glare, the pavement is smooth, a barrier lines the right edge, and traffic is heavy and slow with only same-direction lanes visible. Directly ahead in the ego lane, a gray box truck is stopped because of congestion ahead, holding the ego car. Slightly farther ahead in the right lane, a small covered-bed truck moves forward slowly, limiting a rightward merge. Alongside on the right, a white SUV creeps past the ego vehicle, further constraining space.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car because of traffic congestion ahead. The driver should stop to avoid collision and maintain a safe following distance."}
{"id": "train_02220", "split": "train", "clip_key": "titan_clip_374_000582_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_374_000582_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_374_000582_movie_t-3_augB1.jpg", "titan_clip_374_000582_movie_t-2_augB1.jpg", "titan_clip_374_000582_movie_t-1_augB1.jpg", "titan_clip_374_000582_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "be aware of cyclist", "environment_perception": "An urban commercial street without a median has two travel lanes and a curbside shoulder, the pavement is smooth, and traffic flow is moderate with vehicles ahead easing toward a distant junction. On the right edge near the curb, a cyclist wearing white pants rides toward the ego vehicle to pass a silver van that is stopped along the curb, briefly encroaching into the ego lane. Ahead in the same direction, a small truck and several cars proceed slowly, constraining the ego car's pace. The stopped van narrows the lane on the right and forms the obstruction that the cyclist avoids.", "hazard_reasoning": "There is a cyclist wearing white pants and cycling on the right side of the road towards the ego car, because of the parked vehicle. The cyclist may move further into the travel lane due to the parked vehicle obstructing their path, so the driver should be aware of their position."}
{"id": "train_02221", "split": "train", "clip_key": "2020-0227-104226_077248_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "077248"}, "frames": ["2020-0227-104226_077248_movie_t-3.jpg", "2020-0227-104226_077248_movie_t-2.jpg", "2020-0227-104226_077248_movie_t-1.jpg", "2020-0227-104226_077248_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban residential two-way road with no centerline runs between walls and railings; the pavement looks smooth and traffic is light. Ahead, a black van approaches in the opposing direction near the middle of the roadway, slowing and edging to the right, which may constrain the ego car's passage. No other moving road users are visible. A round 30 speed-limit sign and a no-parking sign appear on a pole to the left. The corridor is tight with metal pedestrian barriers on the right and a few bags at the left curb, but the travel lane remains clear.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. The partially obscured parked red car on the right may re-enter traffic or obstruct the path, so the driver should be cautious."}
{"id": "train_02222", "split": "train", "clip_key": "2020-0207-101955_078423_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "078423"}, "frames": ["2020-0207-101955_078423_movie_t-3.jpg", "2020-0207-101955_078423_movie_t-2.jpg", "2020-0207-101955_078423_movie_t-1.jpg", "2020-0207-101955_078423_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated roadway with one through lane and a striped merge area on the right is visible; guardrails and sound barriers line the sides, the pavement looks smooth, and overall traffic is light. A blue work truck directly ahead in the ego lane slows, because a truck farther ahead is also slowing and constrains its pace. That white truck remains farther up the same lane and decelerates on a gentle right curve, setting the speed for vehicles behind. No oncoming traffic, pedestrians, or other obstacles are visible.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The driver should slow down to maintain a safe distance and avoid a potential rear-end collision."}
{"id": "train_02223", "split": "train", "clip_key": "2020-0204-150838_034441_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "034441"}, "frames": ["2020-0204-150838_034441_movie_t-3.jpg", "2020-0204-150838_034441_movie_t-2.jpg", "2020-0204-150838_034441_movie_t-1.jpg", "2020-0204-150838_034441_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with opposing flows and no physical median appears clean and level, and traffic is moderate to heavy and slow near a signalized intersection with zebra crossings. A white van directly ahead in the ego lane slows with brake lights on because of congestion ahead, pacing the ego vehicle. A black van slightly ahead in the lane to the left also moves slowly, reducing opportunities to change lanes. On the right side of the roadway, an oncoming silver van proceeds through the intersection in its lane and passes by without conflict. Overhead traffic signals and roadside signs are visible but their aspects are not clearly readable.", "hazard_reasoning": "There is a white van slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed in the congested traffic."}
{"id": "train_02224", "split": "train", "clip_key": "titan_clip_1107_000498_movie", "source": {"subset": "titan", "scenario": "clip_1107", "frame": "000498"}, "frames": ["titan_clip_1107_000498_movie_t-3.jpg", "titan_clip_1107_000498_movie_t-2.jpg", "titan_clip_1107_000498_movie_t-1.jpg", "titan_clip_1107_000498_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked truck ahead.", "environment_perception": "A narrow urban two-way street with one lane each direction runs between mid-rise buildings; pavement is smooth and traffic is light. The ego vehicle continues in the left lane toward a small intersection with a zebra crossing. Ahead on the left curb, a white box truck is parked for unloading, encroaching slightly into the ego lane and constraining the approach. Beside its rear, a worker stands and moves briefly, close to the travel path and relevant to clearance. A dark sedan is stationary along the left curb in the near foreground, while no oncoming vehicles are close and none follow closely in the same direction. No traffic signals are visible.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. Since the truck blocks part of the lane and reduces sightlines, drivers need to be aware for potential obstacles or sudden movements."}
{"id": "train_02225", "split": "train", "clip_key": "2020-0129-105040_100495_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "100495"}, "frames": ["2020-0129-105040_100495_movie_t-3.jpg", "2020-0129-105040_100495_movie_t-2.jpg", "2020-0129-105040_100495_movie_t-1.jpg", "2020-0129-105040_100495_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes runs alongside shops and a shrub median, the dry pavement in good condition and overall flow moderate but slowing near overhead guide signs. A white mini-truck directly ahead in the ego lane slows and bunches up behind traffic, constraining the ego car's pace as congestion forms. Farther ahead in the same lane, another white mini-truck creeps forward in the queue, reinforcing the slowdown. On the left curb, a utility truck stands within cones and remains stationary, occupying the left lane and narrowing the available roadway. Across the median, light oncoming traffic proceeds steadily, and a roadside no-parking sign is visible.", "hazard_reasoning": "There is a white mini-truck slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The truck's reduced speed due to congestion ahead means you should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_02226", "split": "train", "clip_key": "2020-0225-145150_014531_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "014531"}, "frames": ["2020-0225-145150_014531_movie_t-3.jpg", "2020-0225-145150_014531_movie_t-2.jpg", "2020-0225-145150_014531_movie_t-1.jpg", "2020-0225-145150_014531_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane street with smooth pavement and no physical median is seen, and traffic is heavy with vehicles queued at a signalized intersection. The ego car follows a gray van directly ahead in the ego lane; the van is stopped at the red light and holds the lane. To the right, a white van in the adjacent lane waits slightly ahead in the queue, remaining parallel to the ego vehicle. Farther ahead, more cars line up toward the junction, keeping the flow stationary. An overhead traffic signal shows red.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid a collision with the stopped vehicle ahead."}
{"id": "train_02227", "split": "train", "clip_key": "titan_clip_824_000054_movie", "source": {"subset": "titan", "scenario": "clip_824", "frame": "000054"}, "frames": ["titan_clip_824_000054_movie_t-3.jpg", "titan_clip_824_000054_movie_t-2.jpg", "titan_clip_824_000054_movie_t-1.jpg", "titan_clip_824_000054_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way street with no centerline and green-edged shoulders has smooth pavement and light traffic; the ego vehicle proceeds along the left side while parked cars narrow the lane. Ahead in the middle of the road, a woman in a green dress carrying a handbag walks away from the ego vehicle, having moved around a gray hatchback parked on the left, and she occupies the ego path. To the right ahead, another woman with an umbrella walks away near a white car with its rear hatch open, keeping close to the edge but possibly stepping into the lane. On the near left, a man with shopping bags walks along the shoulder in the same direction, close to the travel line.", "hazard_reasoning": "There is a woman carrying a handbag, wearing a green dress, and walking in the middle of the road away from the ego-car because of the gray hatchback car parked on the left side. The driver should manoeuvre carefully around the pedestrian to avoid collision."}
{"id": "train_02228", "split": "train", "clip_key": "2020-0220-102630_044593_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "044593"}, "frames": ["2020-0220-102630_044593_movie_t-3.jpg", "2020-0220-102630_044593_movie_t-2.jpg", "2020-0220-102630_044593_movie_t-1.jpg", "2020-0220-102630_044593_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road runs beneath an elevated structure, with the right edge bounded by a fence and columns; the pavement looks smooth and traffic is heavy and slow. Directly ahead in the ego lane, a white box truck is stopped because of congestion, blocking the path. In the adjacent left lane, a small green-tarp truck draws level and inches forward in the queue, limiting the ego vehicle's ability to merge around the blockage. The shoulder is narrow against the fence and column, creating tight clearance on the right and a confined feel.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle."}
{"id": "train_02229", "split": "train", "clip_key": "2020-0225-145150_018741_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "018741"}, "frames": ["2020-0225-145150_018741_movie_t-3.jpg", "2020-0225-145150_018741_movie_t-2.jpg", "2020-0225-145150_018741_movie_t-1.jpg", "2020-0225-145150_018741_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes each way runs between mid-rise buildings; the pavement looks damp but intact and traffic flows at a moderate, steady pace. A silver van travels ahead in the ego lane at a constant speed, continuing toward the signalized intersection and effectively setting the ego vehicle's pace as traffic moves through. In the left same-direction lane, a dark wagon runs slightly behind and then alongside, constraining any immediate lane change. Oncoming lanes to the right of the median carry several trucks moving toward the camera, separated by guardrails. Overhead traffic signals are visible at the junction ahead.", "hazard_reasoning": "A silver van is driving in front of the ego car in the ego lane, because of the green traffic light. Maintaining a safe following distance allows you to react if the light changes or the van stops unexpectedly."}
{"id": "train_02230", "split": "train", "clip_key": "2020-0204-150838_003797_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "003797"}, "frames": ["2020-0204-150838_003797_movie_t-3.jpg", "2020-0204-150838_003797_movie_t-2.jpg", "2020-0204-150838_003797_movie_t-1.jpg", "2020-0204-150838_003797_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth pavement approaches a junction, and same-direction traffic is heavy and largely stopped. A black minivan directly ahead, slightly to the right in the ego lane, is stationary because congestion blocks the lane. A scooter rider ahead near the center of the lane filters between vehicles and then pauses with a foot down, occupying the ego vehicle's path and constraining progress. To the left, a black taxi in the adjacent lane stands still alongside the ego car, limiting room to maneuver. Farther ahead, a large box truck sits in the queue and blocks forward visibility.", "hazard_reasoning": "There is a black minivan stopped on the right side in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop because the congested traffic ahead has halted vehicles, posing a collision risk if the ego-vehicle continues moving."}
{"id": "train_02231", "split": "train", "clip_key": "2020-0214-102601_029313_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "029313"}, "frames": ["2020-0214-102601_029313_movie_t-3.jpg", "2020-0214-102601_029313_movie_t-2.jpg", "2020-0214-102601_029313_movie_t-1.jpg", "2020-0214-102601_029313_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs between tall buildings with no median, the pavement is dry and intact, and traffic is heavy with stop-and-go flow. The white sedan directly ahead in the ego lane is stopped because of congestion and blocks the ego vehicle's path. Farther ahead in the same lane, a white box truck also stands still, reinforcing the queue and keeping speeds low. In the right adjacent lane, a dark van inches forward beside the sedan, narrowing space and preventing an easy lane change. At the left curb, a small white van waits near the lane edge without moving, remaining close to the ego lane but outside its path.", "hazard_reasoning": "There is a white Sedan stopped in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should stop to avoid a collision with the halted vehicle and adapt to the congested traffic ahead."}
{"id": "train_02232", "split": "train", "clip_key": "2020-0226-140503_104843_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-140503_104843_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-140503_104843_movie_t-3_augB1.jpg", "2020-0226-140503_104843_movie_t-2_augB1.jpg", "2020-0226-140503_104843_movie_t-1_augB1.jpg", "2020-0226-140503_104843_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way intersection with no median and smooth pavement carries moderate traffic as vehicles slow near the junction. A white box truck directly ahead in the ego lane slows before the intersection, constraining the ego car's pace. Ahead left, a white hatchback in the adjacent same-direction lane also slows near the crosswalk, remaining parallel to the ego path. On the right side, oncoming vehicles including a white van and a small car proceed through their lanes toward the camera without encroaching. Several pedestrians wait on the left sidewalk near the corner shops.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's reduced speed may require the driver to slow down to maintain a safe following distance."}
{"id": "train_02233", "split": "train", "clip_key": "titan_clip_618_000066_movie", "source": {"subset": "titan", "scenario": "clip_618", "frame": "000066"}, "frames": ["titan_clip_618_000066_movie_t-3.jpg", "titan_clip_618_000066_movie_t-2.jpg", "titan_clip_618_000066_movie_t-1.jpg", "titan_clip_618_000066_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "An urban alley-like street with a single narrow lane and no divider runs between buildings; the asphalt is smooth and dry, and traffic is light with no moving vehicles. A pedestrian ahead walks away from the camera near the center of the lane. On the right edge by the storefronts, a row of traffic cones on the right side of the road is set out with an A-frame warning sign, while numerous parked bicycles line both curbs and constrict the roadway. No traffic signals are visible, and no other moving road users interact with the lane.", "hazard_reasoning": "There is a traffic cone on the right side of the road. The cone indicates a potential obstruction requiring careful navigation to avoid contact."}
{"id": "train_02234", "split": "train", "clip_key": "2020-0212-102546_013832_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "013832"}, "frames": ["2020-0212-102546_013832_movie_t-3.jpg", "2020-0212-102546_013832_movie_t-2.jpg", "2020-0212-102546_013832_movie_t-1.jpg", "2020-0212-102546_013832_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene on a two-lane same-direction road with left-side traffic, no median, smooth asphalt, and slow flow approaching a signalized intersection. A gray van directly ahead in the ego lane pulls forward gradually, keeping the ego car slow. In the adjacent left lane slightly ahead, a white box truck moves slowly toward the junction, narrowing the lateral gap and partly screening the view. On the right edge, a pedestrian walks along a building driveway by the curb, parallel to traffic and outside the lane.", "hazard_reasoning": "There is a gray van pulling forward, in front of the ego-car, in the ego lane. The van's forward motion may be unpredictable, so the driver should be aware to maintain a safe following distance."}
{"id": "train_02235", "split": "train", "clip_key": "2020-0217-144444_011392_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "011392"}, "frames": ["2020-0217-144444_011392_movie_t-3.jpg", "2020-0217-144444_011392_movie_t-2.jpg", "2020-0217-144444_011392_movie_t-1.jpg", "2020-0217-144444_011392_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street scene shows a narrow two-way road with no median and dry, smooth pavement, and traffic appears light as the ego vehicle proceeds straight. A cyclist rides ahead in the same direction at a modest pace, occupying the ego lane and potentially limiting speed. On the right, a pedestrian walks along the sidewalk close to the curb beside a glass-walled building, remaining parallel to traffic. Another pedestrian is near the front-right sidewalk and continues past the camera without stepping into the road. Parked cars line the left curb, including a green car near the camera, narrowing the usable lane; no salient signals or signs are visible.", "hazard_reasoning": "No hazards were detected in the scene as there are no moving vehicles obstructing the path, no unexpected obstacles on the roadway, and stable driving conditions under daylight. Drivers can proceed normally without additional caution."}
{"id": "train_02236", "split": "train", "clip_key": "2020-0131-135401_009531_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "009531"}, "frames": ["2020-0131-135401_009531_movie_t-3.jpg", "2020-0131-135401_009531_movie_t-2.jpg", "2020-0131-135401_009531_movie_t-1.jpg", "2020-0131-135401_009531_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "A narrow urban two-way street with one lane each direction and a solid yellow centerline runs between close buildings; the pavement appears smooth and overall traffic is light, though the ego lane is momentarily halted. A white box truck directly ahead in the ego lane is stopped at a red traffic light, holding the ego vehicle. An oncoming black minivan approaches in the opposite lane at low speed and continues straight without encroaching. A pedestrian on the left sidewalk walks away from the camera along the building edge, remaining off the roadway. Small signal heads are visible at the downstream intersection.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, because of a red traffic light. The driver should stop immediately to avoid collision with the halted vehicle and comply with the red signal."}
{"id": "train_02237", "split": "train", "clip_key": "titan_clip_619_000534_movie", "source": {"subset": "titan", "scenario": "clip_619", "frame": "000534"}, "frames": ["titan_clip_619_000534_movie_t-3.jpg", "titan_clip_619_000534_movie_t-2.jpg", "titan_clip_619_000534_movie_t-1.jpg", "titan_clip_619_000534_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian on road.", "environment_perception": "A narrow urban street with a single shared lane, no median, and smooth pavement, shows very light traffic with no moving vehicles. On the right side of the road, a pedestrian in a black shirt carrying a bag walks toward the ego vehicle in the roadway because there is no sidewalk, and his path approaches the travel lane. Along the left edge, another pedestrian pulls a rolling suitcase away from the camera near the curb, remaining close to the ego path. Parked bicycles on the right and orange cones on the left slightly narrow the lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and carrying a bag, walking on the right side of the road, toward the ego car, because there is no sidewalk. The pedestrian is in the vehicle's path without a sidewalk, so the driver should be cautious to avoid collision."}
{"id": "train_02238", "split": "train", "clip_key": "2020-0207-151349_034166_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "034166"}, "frames": ["2020-0207-151349_034166_movie_t-3.jpg", "2020-0207-151349_034166_movie_t-2.jpg", "2020-0207-151349_034166_movie_t-1.jpg", "2020-0207-151349_034166_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road runs under an elevated expressway, with a concrete wall on the right; the pavement is smooth and traffic is slow near a junction. A black motorcycle directly ahead in the ego lane is stopped at a red light, holding the lane. Slightly farther ahead in the same lane, a small silver kei truck waits stationary, further constraining progress. In the adjacent right lane, a large coach bus with a taxi close behind moves forward slowly under the flyover.", "hazard_reasoning": "There is a black motorcycle stopped in the ego lane, because of the red traffic light. The motorcycle's halt directly ahead creates a collision risk, so you must stop to avoid running into it."}
{"id": "train_02239", "split": "train", "clip_key": "2020-0213-143552_022451_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "022451"}, "frames": ["2020-0213-143552_022451_movie_t-3.jpg", "2020-0213-143552_022451_movie_t-2.jpg", "2020-0213-143552_022451_movie_t-1.jpg", "2020-0213-143552_022451_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-way arterial with two lanes each direction has smooth pavement and no physical median, and traffic is heavy with a queue at a signalized intersection. A gray covered truck is stopped directly ahead in the ego lane because of congestion beyond the crosswalk, holding the ego vehicle. In the adjacent same-direction lane to the left, a large white box truck is also stopped at the line, limiting space to merge. Oncoming traffic includes a silver van arriving from the right side of the frame that continues straight through the junction while remaining in its lane. Overhead traffic lights and directional signs are visible above the intersection.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The stopped truck indicates a risk of collision if the driver continues moving without noticing, so the driver must stop to maintain a safe distance."}
{"id": "train_02240", "split": "train", "clip_key": "2020-0205-103411_051967_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "051967"}, "frames": ["2020-0205-103411_051967_movie_t-3.jpg", "2020-0205-103411_051967_movie_t-2.jpg", "2020-0205-103411_051967_movie_t-1.jpg", "2020-0205-103411_051967_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial with smooth pavement and light-to-moderate flow leads to a signalized intersection, where traffic momentarily queues. A black mid-size SUV directly ahead in the ego lane is stopped near the intersection because the traffic light ahead shows red, determining the ego vehicle's pace. In the adjacent lane to the left, a dark station wagon is also halted and waits for the light. To the right across the center of the roadway, an oncoming silver mini-truck continues through the intersection in its lane without conflicting. An overhead pedestrian bridge and the visible red signal frame the junction.", "hazard_reasoning": "There is a black mid-SUV stopped near the intersection, in the ego lane, because of the red traffic light. The red light requires the driver to stop to avoid a collision with the halted vehicle."}
{"id": "train_02241", "split": "train", "clip_key": "2020-0220-102630_120683_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "120683"}, "frames": ["2020-0220-102630_120683_movie_t-3.jpg", "2020-0220-102630_120683_movie_t-2.jpg", "2020-0220-102630_120683_movie_t-1.jpg", "2020-0220-102630_120683_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with a single lane in each direction and a solid yellow centerline runs past low-rise buildings; the pavement looks smooth and traffic is moderate with a slight slowdown ahead. A white scooter with a cargo box is directly ahead in the ego lane and slows because traffic bunches up in front, so it governs the ego car's pace. Farther ahead in the same lane, a black car moves slowly, creating the queue that triggers the scooter's deceleration. In the oncoming lane, a white van approaches and passes steadily, remaining separated by the centerline.", "hazard_reasoning": "There is a white scooter slowing down ahead of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance as the scooter's deceleration indicates congestion ahead."}
{"id": "train_02242", "split": "train", "clip_key": "titan_clip_1341_000036_movie", "source": {"subset": "titan", "scenario": "clip_1341", "frame": "000036"}, "frames": ["titan_clip_1341_000036_movie_t-3.jpg", "titan_clip_1341_000036_movie_t-2.jpg", "titan_clip_1341_000036_movie_t-1.jpg", "titan_clip_1341_000036_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian controlling traffic", "environment_perception": "An urban one-way street with two lanes runs between tall buildings; the wet pavement and overcast light accompany generally light traffic and no median. A black sedan is stopped at the left curb near the ego-vehicle, encroaching slightly into the left lane and narrowing the path. Farther ahead on the left, a pedestrian wearing a blue shirt and white helmet stands at the curb directing traffic for nearby roadwork, which may constrain the ego vehicle's pace. Ahead in the right lane, several work trucks are parked by the curb and cones mark an active work zone that squeezes the roadway. No prominent signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and white helmet, standing on the left side of the road, because they are controlling the traffic. The driver should be aware of the pedestrian controlling traffic as they might influence traffic flow and require caution."}
{"id": "train_02243", "split": "train", "clip_key": "2020-0220-102630_027987_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_027987_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_027987_movie_t-3_augB1.jpg", "2020-0220-102630_027987_movie_t-2_augB1.jpg", "2020-0220-102630_027987_movie_t-1_augB1.jpg", "2020-0220-102630_027987_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with two same-direction lanes runs between mid-rise buildings; the pavement looks smooth and traffic is moderate. Ahead in the ego lane, a gray box truck begins shifting right to change lanes in front of the ego car, constraining the ego vehicle's pace. In the right lane, a white car travels alongside near the truck, reducing the available gap for the merge. Oncoming traffic includes a white van approaching beyond the center line but remaining separated. The left lane shows a dedicated-use marking on the pavement.", "hazard_reasoning": "There is a gray truck lane changing in front of the ego car, from the ego lane to the right lane. The truck's lane change could encroach on the driver's path unexpectedly, so the driver should slow down to maintain a safe distance under this situation."}
{"id": "train_02244", "split": "train", "clip_key": "2020-0214-102601_001810_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "001810"}, "frames": ["2020-0214-102601_001810_movie_t-3.jpg", "2020-0214-102601_001810_movie_t-2.jpg", "2020-0214-102601_001810_movie_t-1.jpg", "2020-0214-102601_001810_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with a solid yellow centerline curves gently ahead; the asphalt is smooth and traffic is light with no vehicles immediately nearby. Guardrails edge a narrow sidewalk on the right beside a storefront and vending machines, and a curb cut with tactile paving leads to a recessed driveway. A pedestrian stands on the right sidewalk near a fence, stationary and facing the street, but remains off the carriageway and is unlikely to enter the ego lane. A scooter is parked in the driveway ahead-left off the road, not obstructing the lane. No traffic signals or speed signs are visible.", "hazard_reasoning": "Even though no active hazards are present, a scooter parked near the shop entrance could obstruct the path or require extra clearance when turning, so drivers should remain alert to avoid collisions."}
{"id": "train_02245", "split": "train", "clip_key": "titan_clip_1300_000138_movie", "source": {"subset": "titan", "scenario": "clip_1300", "frame": "000138"}, "frames": ["titan_clip_1300_000138_movie_t-3.jpg", "titan_clip_1300_000138_movie_t-2.jpg", "titan_clip_1300_000138_movie_t-1.jpg", "titan_clip_1300_000138_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the stopped truck", "environment_perception": "A dense urban commercial street has a single narrow lane with stone paving, no median, and light moving traffic while parked work vehicles line the left and bollards with trees border the right. On the left near the ego-vehicle, a white truck is stopped at the curb, and together with other parked trucks it narrows the lane and constrains the ego path. Far ahead in the same direction, a small white car moves away slowly and loosely sets the pace. On the right sidewalk, pedestrians walk along the shops behind the bollards without entering the roadway. No salient signals are visible and there are no oncoming vehicles.", "hazard_reasoning": "There is a white truck stopped on the left side of the road. The parked truck blocks visibility and may limit maneuvering, so drivers should be cautious to avoid collisions or hidden hazards behind it."}
{"id": "train_02246", "split": "train", "clip_key": "2020-0129-105040_052641_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "052641"}, "frames": ["2020-0129-105040_052641_movie_t-3.jpg", "2020-0129-105040_052641_movie_t-2.jpg", "2020-0129-105040_052641_movie_t-1.jpg", "2020-0129-105040_052641_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway ramp with a single lane curves right between tall noise barriers and a right-side guardrail; the pavement is dry and in good condition, and traffic is light with no oncoming flow due to the divided roadway. A white minibus ahead in the ego lane near the bend proceeds steadily, remaining in lane and slightly ahead of the camera vehicle. A separate parallel carriageway on the right shows no nearby vehicles affecting the ego path. Streetlights line the route and the high barriers limit sight through the curve.", "hazard_reasoning": "No hazards detected; the driver can maintain current speed and lane since the road is clear and unobstructed."}
{"id": "train_02247", "split": "train", "clip_key": "2020-0212-102546_012137_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "012137"}, "frames": ["2020-0212-102546_012137_movie_t-3.jpg", "2020-0212-102546_012137_movie_t-2.jpg", "2020-0212-102546_012137_movie_t-1.jpg", "2020-0212-102546_012137_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection appears with multiple lanes and a separated right-turn pocket marked by flexible posts; the pavement is smooth and traffic is light. A white box truck directly ahead in the ego right-turn lane is stopped, waiting for a red right-turn signal, which holds the ego vehicle. A smaller white truck in the adjacent through lane to the left continues straight across the junction and pulls away, not affecting the intended right turn. A couple of pedestrians are visible on the far-right sidewalk by the crosswalk but remain off the roadway.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of a red traffic light controlling the right turn. The driver should stop to avoid a collision and comply with the red signal since the truck blocks the view of the intersection."}
{"id": "train_02248", "split": "train", "clip_key": "2020-0207-101955_117116_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "117116"}, "frames": ["2020-0207-101955_117116_movie_t-3.jpg", "2020-0207-101955_117116_movie_t-2.jpg", "2020-0207-101955_117116_movie_t-1.jpg", "2020-0207-101955_117116_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop due to halted traffic ahead.", "environment_perception": "An urban multilane road runs beneath an elevated expressway, with at least two same-direction lanes and a curbside sidewalk on the left; the pavement is smooth and traffic is heavy and mostly stop-and-go. A blue sedan directly ahead in the ego lane is stopped because of congestion and constrains the ego car's pace. In the adjacent right lane, a white van and a white hatchback inch forward beside the ego vehicle, limiting space to merge. Farther ahead in that lane, a large white box truck waits in the queue, contributing to the slow flow.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Drivers should stop to avoid colliding with the stationary vehicle ahead."}
{"id": "train_02249", "split": "train", "clip_key": "2020-0203-114632_006317_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "006317"}, "frames": ["2020-0203-114632_006317_movie_t-3.jpg", "2020-0203-114632_006317_movie_t-2.jpg", "2020-0203-114632_006317_movie_t-1.jpg", "2020-0203-114632_006317_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction curves gently right, divided by double yellow lines on smooth pavement and carrying light traffic. A white van is stopped in the ego lane ahead, blocking the path. Just before it, a dark delivery van is parked in the left bus-stop bay with its rear doors open. On the near right, a bicyclist rides along the curb in the same direction, keeping to the edge. A blue straight-ahead sign and a time-limited no-parking sign are posted on the left.", "hazard_reasoning": "There is a white van that has stopped in the ego lane, in front of the ego car. The driver should stop to avoid colliding with the stopped van and prevent a rear-end collision."}
{"id": "train_02250", "split": "train", "clip_key": "2020-0217-110854_001983_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "001983"}, "frames": ["2020-0217-110854_001983_movie_t-3.jpg", "2020-0217-110854_001983_movie_t-2.jpg", "2020-0217-110854_001983_movie_t-1.jpg", "2020-0217-110854_001983_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban commercial street has two same-direction lanes, no median, and dark wet asphalt; traffic remains heavy and slow throughout. A red delivery motorcycle directly ahead in the ego lane comes to a stop because of the congestion, holding the ego vehicle. Just beyond it, a small silver car in the same lane creeps and then stops behind a white truck farther ahead, continuing the bottleneck. In the adjacent left lane, several vans and cars queue closely and inch forward parallel to the ego lane. Parked bicycles and shopfronts line the right sidewalk but stay clear of the roadway.", "hazard_reasoning": "There is a red motorcycle stopping in the ego lane because of traffic congestion ahead. The driver should stop to avoid colliding with the halted motorcycle and queued vehicles."}
{"id": "train_02251", "split": "train", "clip_key": "2020-0129-105040_045397_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "045397"}, "frames": ["2020-0129-105040_045397_movie_t-3.jpg", "2020-0129-105040_045397_movie_t-2.jpg", "2020-0129-105040_045397_movie_t-1.jpg", "2020-0129-105040_045397_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road runs under an elevated structure with dry, smooth asphalt and a guardrail on the right separating oncoming traffic; flow is moderate in multiple same-direction lanes. A silver van ahead in the ego lane accelerates away, opening the gap to the camera car. To the left, a large tanker truck travels nearly alongside in the adjacent lane at a similar speed, limiting lateral space and any immediate chance to merge left. Farther ahead left, a white hatchback in that lane slows with the queue and holds its position, further constraining a leftward lane change. Oncoming vans pass beyond the right-side barrier and remain fully separated.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02252", "split": "train", "clip_key": "2020-0206-142535_014419_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "014419"}, "frames": ["2020-0206-142535_014419_movie_t-3.jpg", "2020-0206-142535_014419_movie_t-2.jpg", "2020-0206-142535_014419_movie_t-1.jpg", "2020-0206-142535_014419_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning vehicle.", "environment_perception": "A wide urban signalized intersection with smooth pavement is ahead, and the ego vehicle waits in the left lane of a two-way road amid moderate cross-traffic. A black sedan in the middle of the junction turns right across the ego's path into the oncoming lanes to the ego's right, briefly occupying the intersection and constraining the ego. A silver SUV slightly farther ahead also moves left to right through the junction, completing a right turn and clearing. Several pedestrians stand at the far corners near the crosswalks, waiting at the curb and not stepping into the road. Traffic signals are not clearly visible.", "hazard_reasoning": "There is a black sedan in the middle of the intersection, in front of the ego-car, making a right hand turn into the oncoming traffic lane to the right of the ego-car. Driver should be aware because the sedan's turn may encroach into the ego-vehicle's path and risk a collision."}
{"id": "train_02253", "split": "train", "clip_key": "2020-0214-102601_024751_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "024751"}, "frames": ["2020-0214-102601_024751_movie_t-3.jpg", "2020-0214-102601_024751_movie_t-2.jpg", "2020-0214-102601_024751_movie_t-1.jpg", "2020-0214-102601_024751_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement and a red-painted left lane carries heavy, slow traffic that starts to roll forward. A green sedan directly ahead in the ego lane accelerates away as the traffic signal visible to the right shows green, creating growing space in front of the ego car. Farther ahead in the same lane, a tall white box truck moves slowly and effectively sets the pace for vehicles behind it. In the adjacent right lane, a black sedan runs parallel slightly ahead and may merge into the ego lane if a gap opens. On the far left, a dark van proceeds in the red-painted lane beside the ego vehicle without encroaching on its path.", "hazard_reasoning": "There is a green sedan in the ego lane, accelerating away from the ego car, because of a green traffic light ahead. Since the traffic light is green, the driver should start moving promptly to follow traffic flow and avoid delaying vehicles behind."}
{"id": "train_02254", "split": "train", "clip_key": "2020-0203-154554_020299_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "020299"}, "frames": ["2020-0203-154554_020299_movie_t-3.jpg", "2020-0203-154554_020299_movie_t-2.jpg", "2020-0203-154554_020299_movie_t-1.jpg", "2020-0203-154554_020299_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with dry pavement carries heavy, stop-and-go traffic, with a low curb separating a side lane on the right. Directly ahead in the ego lane a black sedan is stopped because of congestion, holding the ego car. To the left, a white minivan queues slowly in the adjacent lane alongside, constraining lateral movement. Farther ahead in the same lane a small white van also waits in the line, reinforcing the backup. Overhead direction signs indicate Route 20 toward Hatsudai 2 km and a bus terminal left in 140 m.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop because the leading vehicle is halted and continuing forward could cause a rear-end collision."}
{"id": "train_02255", "split": "train", "clip_key": "titan_clip_619_000426_movie", "source": {"subset": "titan", "scenario": "clip_619", "frame": "000426"}, "frames": ["titan_clip_619_000426_movie_t-3.jpg", "titan_clip_619_000426_movie_t-2.jpg", "titan_clip_619_000426_movie_t-1.jpg", "titan_clip_619_000426_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow urban street with a single lane, no centerline, and smooth pavement runs between close storefronts; traffic is very light with no moving vehicles. A pedestrian carrying a suitcase is directly ahead in the lane, walking and then stopping in front of the ego car because there is effectively no sidewalk, so he controls the car's pace. Another pedestrian farther ahead along the right edge walks toward the camera beside the shops and could drift into the lane. The edges are cluttered with parked bicycles, planters, and a line of orange cones on the left that further squeezes the roadway.", "hazard_reasoning": "A pedestrian carrying a suitcase is walking and stopping in the middle of the road, in front of the ego car, because there is no sidewalk. The driver should yield to this pedestrian to avoid collision."}
{"id": "train_02256", "split": "train", "clip_key": "2020-0203-114632_073617_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "073617"}, "frames": ["2020-0203-114632_073617_movie_t-3.jpg", "2020-0203-114632_073617_movie_t-2.jpg", "2020-0203-114632_073617_movie_t-1.jpg", "2020-0203-114632_073617_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs past shops, the pavement smooth and dry. Traffic is moderate to heavy and bunching toward a signalized intersection ahead. A silver van directly ahead in the ego lane slows because of the congestion and controls the ego car's pace. Farther ahead in the middle lane, a large construction truck crawls in the queue, contributing to the slowdown. To the right, a gray van travels parallel slightly ahead in its lane, reducing room for a rightward lane change. Overhead blue guide signs span the roadway, and a traffic signal is visible down the road. A white coach bus stands parked off the left curb outside the travel lane.", "hazard_reasoning": "There is a silver van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to adjust for the reduced speed ahead and maintain a safe following distance under congested conditions."}
{"id": "train_02257", "split": "train", "clip_key": "2020-0210-101957_006232_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "006232"}, "frames": ["2020-0210-101957_006232_movie_t-3.jpg", "2020-0210-101957_006232_movie_t-2.jpg", "2020-0210-101957_006232_movie_t-1.jpg", "2020-0210-101957_006232_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with taxi.", "environment_perception": "An urban two-way street with a single lane each direction and a solid center line runs between low-rise buildings; the pavement is smooth and traffic ahead is heavy with a short queue, while oncoming flow is light. A green taxi is stopped directly ahead in the ego lane, halted by congestion and holding the ego vehicle at a standstill. Farther ahead in the same direction, several cars line up near an intersection, moving slowly and limiting progress. In the opposite lane, a white van approaches and continues past, remaining in its lane without encroaching.", "hazard_reasoning": "There is a green taxi stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver needs to stop to avoid a collision with the halted vehicle due to the sudden traffic buildup."}
{"id": "train_02258", "split": "train", "clip_key": "2020-0218-103119_056458_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "056458"}, "frames": ["2020-0218-103119_056458_movie_t-3.jpg", "2020-0218-103119_056458_movie_t-2.jpg", "2020-0218-103119_056458_movie_t-1.jpg", "2020-0218-103119_056458_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs beneath an elevated roadway, with two or more same-direction lanes and a barrier separating traffic on the far right. The pavement looks dry and intact, and overall flow is heavy and slow. A large white box truck directly ahead in the ego lane slows because congestion forms ahead, constraining the ego car's pace. Another white box truck in the lane to the right is slightly ahead and inches forward in its lane at a similar speed. A black SUV to the right of the ego vehicle holds position alongside at low speed without edging toward the ego lane. No signals or unusual hazards are visible.", "hazard_reasoning": "There is a white truck slowing in the ego lane front of the ego car, because of traffic congestion. The truck's reduced speed due to congestion increases the risk of a rear-end collision, so the driver should slow down to maintain a safe distance."}
{"id": "train_02259", "split": "train", "clip_key": "titan_clip_270_000618_movie", "source": {"subset": "titan", "scenario": "clip_270", "frame": "000618"}, "frames": ["titan_clip_270_000618_movie_t-3.jpg", "titan_clip_270_000618_movie_t-2.jpg", "titan_clip_270_000618_movie_t-1.jpg", "titan_clip_270_000618_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street in a dense city block has no centerline, smooth dry pavement, and light vehicular traffic. Near the intersection ahead, two pedestrians in blue shirts, one wearing a cap, walk away along the left edge because there is no sidewalk, staying close to the ego lane and constraining speed. Several other pedestrians are in the roadway and crossing from right to left, moving slowly across the ego path. A white car noses out from a garage on the left and waits to merge into the street, potentially entering the ego lane. A convex mirror stands at the corner of the unsignalized cross street, and bicycles are parked along the right, narrowing the passage.", "hazard_reasoning": "There are two pedestrians, both wearing blue shirts and one wearing a cap, walking along the left side of the road, away from the ego car, because there is no sidewalk. The driver should slow down to ensure a safe distance as pedestrians may enter the travel lane unexpectedly."}
{"id": "train_02260", "split": "train", "clip_key": "titan_clip_1265_000198_movie", "source": {"subset": "titan", "scenario": "clip_1265", "frame": "000198"}, "frames": ["titan_clip_1265_000198_movie_t-3.jpg", "titan_clip_1265_000198_movie_t-2.jpg", "titan_clip_1265_000198_movie_t-1.jpg", "titan_clip_1265_000198_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A narrow urban two-way street with no centerline runs between close-set buildings; the pavement is smooth and traffic is light. Ahead in the ego lane, a cyclist wearing a brown shirt and cap tows a green cart, rides down the middle of the road, and shifts toward the right side, directly affecting the ego vehicle's path. Slightly farther ahead on the right, three pedestrians walk away along the edge of the roadway, at times close to the lane, reducing passing space. Parked bicycles on the left and a trash collection cage on the right constrict the corridor near a gentle right bend, limiting visibility.", "hazard_reasoning": "There is a cyclist wearing a brown shirt and cap, pulling a green cart behind his bike, riding down the middle of the road in the ego lane, and moving towards the right side of the road. The driver must carefully manoeuvre around this cyclist because he occupies the lane and is shifting position, posing a collision risk if not avoided."}
{"id": "train_02261", "split": "train", "clip_key": "2020-0131-103016_003054_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "003054"}, "frames": ["2020-0131-103016_003054_movie_t-3.jpg", "2020-0131-103016_003054_movie_t-2.jpg", "2020-0131-103016_003054_movie_t-1.jpg", "2020-0131-103016_003054_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the white sedan lane changing ahead", "environment_perception": "An urban arterial runs under an elevated expressway, with two same-direction lanes and a metal barrier separating oncoming traffic; the pavement appears smooth and traffic is moderate and steady. A white sedan ahead to the right signals and moves from the right lane into the ego lane in front of the ego car, briefly tightening the gap. A black taxi close at the front right continues straight in the adjacent lane, holding position without merging. Farther ahead, several cars in both lanes proceed at a similar pace, shaping a steady flow. Pedestrians walk on the left sidewalk behind a guardrail, well outside the roadway.", "hazard_reasoning": "There is a white sedan lane changing in front of the ego car, from the right lane to the ego lane. Because the sedan is merging into the ego lane, the driver should be alert to its movement to maintain safe following distance."}
{"id": "train_02262", "split": "train", "clip_key": "2020-0207-151349_002703_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "002703"}, "frames": ["2020-0207-151349_002703_movie_t-3.jpg", "2020-0207-151349_002703_movie_t-2.jpg", "2020-0207-151349_002703_movie_t-1.jpg", "2020-0207-151349_002703_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban arterial with two lanes in the ego direction runs straight, divided from oncoming lanes on the right by a raised median; the pavement looks smooth and traffic moves at a moderate, steady pace. A silver van directly ahead in the ego left lane proceeds straight at a modest speed and sets the pace. Farther ahead, a small white car in the same lane continues straight with steady spacing. On the opposite carriageway, a truck approaches beyond the median without affecting the ego path. Parked vans line the left curb near the camera, narrowing the edge of the lane, and overhead direction signs are visible in the distance.", "hazard_reasoning": "There is a cyclist standing in the left lane, because of parked cars. The cyclist obstructs the driving path and requires a careful manoeuvre to avoid a collision."}
{"id": "train_02263", "split": "train", "clip_key": "titan_clip_1225_000282_movie", "source": {"subset": "titan", "scenario": "clip_1225", "frame": "000282"}, "frames": ["titan_clip_1225_000282_movie_t-3.jpg", "titan_clip_1225_000282_movie_t-2.jpg", "titan_clip_1225_000282_movie_t-1.jpg", "titan_clip_1225_000282_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow single-lane carriageway is lined by bollards and shopfronts; the pavement looks wet and smooth, and vehicular traffic is light to absent as the ego car proceeds slowly. Pedestrians dominate the scene ahead. In the middle of the road slightly ahead, a woman carrying an umbrella and wearing a gray top walks toward the ego vehicle, moving away from two other people along the right edge, which makes her take the center and could impede the ego vehicle's path. On the right near the bollards, the pair continues along the curb in the same direction as the ego car, close to the roadway and edging outward. Farther ahead, several pedestrians walk along and across the street, narrowing the available lane but keeping a steady pace. No signals or speed signs are prominent.", "hazard_reasoning": "There is a woman carrying an umbrella, wearing a gray shirt, and walking in the middle of the road towards the ego car because of two other people on the side of the road. The driver should slow down to safely navigate around the pedestrian crossing the road ahead."}
{"id": "train_02264", "split": "train", "clip_key": "2020-0212-102546_056510_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "056510"}, "frames": ["2020-0212-102546_056510_movie_t-3.jpg", "2020-0212-102546_056510_movie_t-2.jpg", "2020-0212-102546_056510_movie_t-1.jpg", "2020-0212-102546_056510_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes each way runs between mid-rise buildings, separated by a low planted median and smooth pavement; traffic is light to moderate and flows steadily. On the left-side carriageway, a white van ahead in the ego lane proceeds straight and governs the pace, while another white van slightly farther ahead to the left travels parallel in the adjacent lane. Across the median, a few oncoming vehicles, including a white van, approach in their lanes without affecting the ego path. A large box truck stands stationary at the right edge beside the median in the same-direction carriageway. An overhead blue sign provides lane guidance.", "hazard_reasoning": "The road is clear and well-maintained, so the driver can continue at moderate speed."}
{"id": "train_02265", "split": "train", "clip_key": "2020-0207-101955_076836_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "076836"}, "frames": ["2020-0207-101955_076836_movie_t-3.jpg", "2020-0207-101955_076836_movie_t-2.jpg", "2020-0207-101955_076836_movie_t-1.jpg", "2020-0207-101955_076836_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway with two same-direction lanes runs between concrete barriers and tall noise walls, the pavement is smooth and traffic is light. The ego vehicle follows a blue flatbed truck directly ahead in the left lane; it slows because a truck farther ahead in the same lane is also slowing near the overpass, which constrains the ego car's pace. The lead truck continues at reduced speed, keeping the gap tight between vehicles. To the right, a side lane is separated by diagonal hatch markings and flexible posts, and no vehicles use it during the clip. An overhead pedestrian bridge and continuous barriers frame the scene.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The driver should slow down because the truck's reduced speed and limited visibility of the road ahead increase the risk of a sudden brake."}
{"id": "train_02266", "split": "train", "clip_key": "titan_clip_668_000408_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_668_000408_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_668_000408_movie_t-3_augB1.jpg", "titan_clip_668_000408_movie_t-2_augB1.jpg", "titan_clip_668_000408_movie_t-1_augB1.jpg", "titan_clip_668_000408_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of the scooter merging right", "environment_perception": "A narrow urban shopping street with smooth pavement and no marked centerline forms a two-way single carriageway with light traffic and no median. Ahead in the center, a white scooter moves forward and drifts slightly toward the right side of the ego car, occupying the middle of the road. On the right side, a cluster of pedestrians stands close to the curb outside shops, some walking along the sidewalk while watching the roadway. On the left sidewalk, several pedestrians walk parallel to traffic near the edge but remain off the roadway. No clearly readable traffic signals or posted speeds are prominent.", "hazard_reasoning": "There is a white scooter moving forward in front of the ego car, towards the right side ego car, because there is no other lane. The scooter may shift further into your lane, so you should be aware of its movement."}
{"id": "train_02267", "split": "train", "clip_key": "titan_clip_283_000246_movie", "source": {"subset": "titan", "scenario": "clip_283", "frame": "000246"}, "frames": ["titan_clip_283_000246_movie_t-3.jpg", "titan_clip_283_000246_movie_t-2.jpg", "titan_clip_283_000246_movie_t-1.jpg", "titan_clip_283_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian.", "environment_perception": "An urban two-way street with one lane each direction, no median, and smooth asphalt appears, with light traffic as the ego-vehicle proceeds in the left lane toward a small intersection with zebra crossings. Far ahead in the same direction, a dark hatchback travels away at a steady pace and does not constrain the ego vehicle. At the intersection ahead, a pedestrian in black shorts runs from the right side toward the left across the crosswalk and may enter the ego lane. On the right sidewalk near the crosswalk, another person under an umbrella walks parallel to the road. A man on the left sidewalk stands by the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing black shorts and running from the right side of the intersection to the left. The pedestrian is crossing unpredictably, so the driver should yield to avoid a collision."}
{"id": "train_02268", "split": "train", "clip_key": "titan_clip_765_000492_movie", "source": {"subset": "titan", "scenario": "clip_765", "frame": "000492"}, "frames": ["titan_clip_765_000492_movie_t-3.jpg", "titan_clip_765_000492_movie_t-2.jpg", "titan_clip_765_000492_movie_t-1.jpg", "titan_clip_765_000492_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban back street with smooth pavement and no median, the ego vehicle proceeds along a narrow left-side lane toward a crosswalk and a small coned work area; traffic is light with no moving vehicles nearby. On the left ahead, a woman wearing a white T-shirt and blue shorts carries a handbag and walks away from the ego car along the curb toward the crossing, staying close to the lane edge as the ego approaches. Ahead near the center of the road, a road worker in an orange vest stands beside cones and a boom-lift truck, narrowing the passage and constraining the space the ego can use. A small pickup is parked at the right corner, and the cone line and lift truck partially block the far side of the lane.", "hazard_reasoning": "There is a woman wearing a white t-shirt and blue shorts, carrying a handbag, and walking on the left side of the road, away from the ego car. She may step into the vehicle's path unexpectedly near the work zone, so the driver should manoeuvre around her carefully."}
{"id": "train_02269", "split": "train", "clip_key": "titan_clip_628_000570_movie", "source": {"subset": "titan", "scenario": "clip_628", "frame": "000570"}, "frames": ["titan_clip_628_000570_movie_t-3.jpg", "titan_clip_628_000570_movie_t-2.jpg", "titan_clip_628_000570_movie_t-1.jpg", "titan_clip_628_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban commercial two-way street with no median and smooth asphalt runs ahead, the lane narrow with manhole covers and no moving vehicles in either direction, so traffic is light. On the left edge near the ego path, a pedestrian in a gray shirt and black pants carrying a handbag walks toward the car along the roadway margin, potentially entering the lane. Ahead on the right by a storefront, a small group of pedestrians stands and chats, a couple of them stepping slightly into the carriageway and constricting space. Farther left near a gate, another person lingers at the curb without moving into the road. A 30 speed limit sign is visible on a pole to the right.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black pants, carrying a handbag, walking on the left side of the road, towards the ego car. The driver should be aware of the pedestrian ahead to avoid a potential collision."}
{"id": "train_02270", "split": "train", "clip_key": "2020-0220-102630_027081_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "027081"}, "frames": ["2020-0220-102630_027081_movie_t-3.jpg", "2020-0220-102630_027081_movie_t-2.jpg", "2020-0220-102630_027081_movie_t-1.jpg", "2020-0220-102630_027081_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban street with two same-direction lanes runs between mid-rise buildings, the pavement dry and smooth and traffic light to moderate. A large white box truck is stopped directly ahead in the ego lane, as stated, blocking the lane and holding the ego car's position. In the adjacent right lane, a covered medium truck creeps forward alongside and slightly ahead, limiting space to merge around the obstruction. Farther right, other vehicles continue in the same direction beyond the trucks. A curbside railing tight to the left sidewalk leaves no usable shoulder beside the ego lane.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The driver must stop immediately to avoid a rear-end collision with the halted vehicle ahead."}
{"id": "train_02271", "split": "train", "clip_key": "2020-0207-101955_018145_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_018145_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_018145_movie_t-3_augB1.jpg", "2020-0207-101955_018145_movie_t-2_augB1.jpg", "2020-0207-101955_018145_movie_t-1_augB1.jpg", "2020-0207-101955_018145_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction runs straight, divided by double white center lines; the pavement is dry and traffic is moderate. A small brown covered truck is directly ahead in the ego lane and slows, so the ego car follows its reduced pace. In the adjacent right same-direction lane no vehicle is immediately alongside, leaving it open. In the oncoming lanes to the right, a white van followed by a larger truck approaches at a steady pace within their lanes and does not interact. Bags of trash sit on the left curb by the railing but remain clear of the roadway.", "hazard_reasoning": "There is a brown truck slowing down in front of the ego car. The truck's reduced speed may force the driver to brake suddenly; therefore, slow down promptly to maintain a safe distance."}
{"id": "train_02272", "split": "train", "clip_key": "2020-0129-144857_068497_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "068497"}, "frames": ["2020-0129-144857_068497_movie_t-3.jpg", "2020-0129-144857_068497_movie_t-2.jpg", "2020-0129-144857_068497_movie_t-1.jpg", "2020-0129-144857_068497_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with dry pavement is divided from oncoming traffic by a metal guardrail median; traffic in the ego's direction is heavy and largely stopped for a signal while oncoming vehicles flow steadily. A white sedan directly ahead in the ego lane is stopped, queuing because the traffic light ahead is red and holding the ego vehicle in place. To the left, a dark car in the adjacent lane creeps forward and then brakes, remaining alongside as it waits for the same light. Farther ahead in the left lane, a large work truck sits in the queue, contributing to the slow pace. Overhead lane-direction signs and the red signal are visible.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The stopped vehicle indicates a red light ahead, requiring the driver to stop to avoid a collision and obey traffic signals."}
{"id": "train_02273", "split": "train", "clip_key": "2020-0131-103016_071050_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "071050"}, "frames": ["2020-0131-103016_071050_movie_t-3.jpg", "2020-0131-103016_071050_movie_t-2.jpg", "2020-0131-103016_071050_movie_t-1.jpg", "2020-0131-103016_071050_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs between tall buildings with two travel lanes in the ego direction and a green-painted median separating oncoming lanes to the right; the pavement is dry and traffic moves at a slow, moderately dense pace. A white box truck directly ahead in the ego lane slows because of congestion further up the road, controlling the ego vehicle's speed. A small dark truck with a green-covered bed proceeds in the adjacent right lane slightly ahead at a similar pace, remaining alongside and limiting an immediate lane change. Parked vans along the left curb occupy the curbside space and narrow the left edge of the roadway.", "hazard_reasoning": "There is a white truck slowing in the ego lane because of traffic congestion ahead on the road. Maintain a safe following distance and prepare for reduced speeds."}
{"id": "train_02274", "split": "train", "clip_key": "titan_clip_1118_000240_movie", "source": {"subset": "titan", "scenario": "clip_1118", "frame": "000240"}, "frames": ["titan_clip_1118_000240_movie_t-3.jpg", "titan_clip_1118_000240_movie_t-2.jpg", "titan_clip_1118_000240_movie_t-1.jpg", "titan_clip_1118_000240_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "An urban two-way street with one lane each direction and no median runs between mid-rise buildings; the pavement is smooth and traffic is light. A woman in a white dress carrying a handbag crosses from right to left ahead of the ego vehicle, entering the ego lane and briefly occupying its path. A silver van is stopped at the left edge near the camera with its side door open, and a person on a hand cart beside it protrudes slightly into the lane, narrowing the passage. An oncoming car advances in the right lane. A large 40 marking on the road surface indicates the posted speed.", "hazard_reasoning": "There is a woman wearing a white dress, carrying a handbag, and crossing the street from right to left, in front of the ego car. The pedestrian is crossing directly in front of the vehicle, so the driver should yield to avoid a collision."}
{"id": "train_02275", "split": "train", "clip_key": "titan_clip_130_000504_movie", "source": {"subset": "titan", "scenario": "clip_130", "frame": "000504"}, "frames": ["titan_clip_130_000504_movie_t-3.jpg", "titan_clip_130_000504_movie_t-2.jpg", "titan_clip_130_000504_movie_t-1.jpg", "titan_clip_130_000504_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian carefully", "environment_perception": "A narrow urban street with brick-pattern pavement runs between tall buildings, and traffic is light with the lane partially blocked on the right by a parked box truck. Ahead in the ego lane, a pedestrian wearing a striped T-shirt and white pants walks toward the car around the parked vehicle, entering the travel space because the truck narrows the way. Another pedestrian just beyond the truck moves away along the right edge, hugging the vehicle and reducing the available clearance. On the left, a pedestrian continues along the sidewalk parallel to the car and remains outside the lane. The parked truck forms a tight pinch point in the roadway.", "hazard_reasoning": "There is a pedestrian wearing a striped T-shirt and white pants, and walking in front of the ego car, towards the ego car, because of the parked vehicle. The driver should manoeuvre around the pedestrian carefully because the parked truck forces the pedestrian into the driving lane."}
{"id": "train_02276", "split": "train", "clip_key": "titan_clip_1134_000180_movie", "source": {"subset": "titan", "scenario": "clip_1134", "frame": "000180"}, "frames": ["titan_clip_1134_000180_movie_t-3.jpg", "titan_clip_1134_000180_movie_t-2.jpg", "titan_clip_1134_000180_movie_t-1.jpg", "titan_clip_1134_000180_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A quiet urban residential lane with a single narrow carriageway has no centerline or divider, flanked by concrete walls and dense trees; the pavement is smooth and there are no other vehicles, so traffic is light. The road bends gently to the right ahead, making the space feel tight. Two pedestrians in white T-shirts are ahead in the middle of the lane walking away from the ego vehicle at a relaxed pace, occupying the path and effectively controlling the car's approach speed. No notable signs or signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt and walking in the middle of the road, away from the ego car. The driver should slow down to avoid a potential collision with the pedestrian straying into the vehicle's path."}
{"id": "train_02277", "split": "train", "clip_key": "titan_clip_344_000498_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_344_000498_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_344_000498_movie_t-3_augB1.jpg", "titan_clip_344_000498_movie_t-2_augB1.jpg", "titan_clip_344_000498_movie_t-1_augB1.jpg", "titan_clip_344_000498_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with block-paved surface and no median runs straight ahead, carrying light vehicle flow amid many pedestrians. A dark van ahead near the center-right stops by the curb, narrowing the available lane. Ahead of it, a pedestrian walks in the middle of the road away from the ego car because a parked vehicle occupies the roadside. Another pedestrian at the right edge near the camera walks along the carriageway toward the camera, close to the curb. A scooter and other items are parked on the left outside shops, slightly constricting space. A no-parking sign is visible on the left.", "hazard_reasoning": "There is a man, wearing a blue shirt and black pants, walking in the middle of the road, away from the ego car, because of the parked vehicle. The driver should slow down because the pedestrian is walking in the middle of the road to avoid the parked vehicle, increasing the risk of collision."}
{"id": "train_02278", "split": "train", "clip_key": "titan_clip_896_000288_movie", "source": {"subset": "titan", "scenario": "clip_896", "frame": "000288"}, "frames": ["titan_clip_896_000288_movie_t-3.jpg", "titan_clip_896_000288_movie_t-2.jpg", "titan_clip_896_000288_movie_t-1.jpg", "titan_clip_896_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping district with a narrow two-way road and no median is shown; the pavement looks smooth and vehicle traffic is light as the ego car approaches a small intersection. Ahead in the ego path, a pedestrian in a black T-shirt and black pants crosses from the left side of the intersection to the right, directly across the lane and constraining the pace. Additional pedestrians cross in front of the car and some wait on the right corner near the curb, with a few stepping off the sidewalk. A white van in the same direction proceeds away up the street at low speed ahead. A no-entry sign is posted at the left side street.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and black pants, and crossing the street from the left side of the intersection to the right side. You should slow down to yield to the crossing pedestrian and prevent a potential collision."}
{"id": "train_02279", "split": "train", "clip_key": "titan_clip_435_000210_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_435_000210_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_435_000210_movie_t-3_augB1.jpg", "titan_clip_435_000210_movie_t-2_augB1.jpg", "titan_clip_435_000210_movie_t-1_augB1.jpg", "titan_clip_435_000210_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around parked truck", "environment_perception": "A narrow urban commercial street with a single shared lane and block-paved surface has no divider or lane markings, and traffic is light with only pedestrians and a stopped truck. Ahead on the left, a large box truck is parked partly in the lane, narrowing the passage. A pedestrian wearing black walks toward the ego along the left side to get around the parked truck, moving into the travel space. Another person stands on the roadway at the truck's rear beside the lane where the ego must pass. Farther ahead, two pedestrians continue along the middle of the street away from the ego, remaining ahead.", "hazard_reasoning": "There is a pedestrian wearing black pants and shirt, walking on the left side of the road, towards the ego car, because of the parked vehicle. The pedestrian may step into the lane to bypass the parked truck, so the driver should manoeuvre carefully around the obstacle."}
{"id": "train_02280", "split": "train", "clip_key": "2020-0228-102841_020259_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "020259"}, "frames": ["2020-0228-102841_020259_movie_t-3.jpg", "2020-0228-102841_020259_movie_t-2.jpg", "2020-0228-102841_020259_movie_t-1.jpg", "2020-0228-102841_020259_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop behind the motorcycle to obey the red light.", "environment_perception": "A wide urban arterial approaches a signalized intersection with multiple lanes and clean pavement, with a small refuge island on the right; same-direction traffic is stopped. A black motorcycle is directly ahead in the ego lane, standing at the stop line because the light is red and thus holding the ego vehicle. A marked police car is alongside to the left near the line, waiting for the signal and positioned to proceed straight. Several pedestrians are on the corners and a few cross the zebra crossings ahead, occupying the crosswalk during the red phase. The overhead signal facing the ego approach shows red.", "hazard_reasoning": "A black motorcycle is stopped in front of the ego car in the ego lane, because the light is red. The motorcycle ahead is stopped at a red light, requiring the driver to stop to avoid a collision and obey traffic signals."}
{"id": "train_02281", "split": "train", "clip_key": "2020-0226-101332_057368_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "057368"}, "frames": ["2020-0226-101332_057368_movie_t-3.jpg", "2020-0226-101332_057368_movie_t-2.jpg", "2020-0226-101332_057368_movie_t-1.jpg", "2020-0226-101332_057368_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to merging vehicle", "environment_perception": "An urban multi-lane arterial approaches a large signalized intersection with painted channelization and no physical median; the pavement is dry and in good condition, and traffic is moderate. A black taxi-like minivan near the right front turns right across the junction in front of the ego vehicle, briefly constraining its approach. A gray sedan in the oncoming right lane drives toward the ego car. Several light vans and cars ahead in the ego direction move straight through the intersection in a steady queue that sets the pace. Overhead blue lane-use boards indicate left-turn, straight-ahead, and right-turn lanes.", "hazard_reasoning": "There is a gray sedan driving in the right lane, towards the ego car. The approaching sedan may change lanes unexpectedly towards the ego vehicle, requiring you to yield to avoid a collision."}
{"id": "train_02282", "split": "train", "clip_key": "2020-0220-151845_009451_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "009451"}, "frames": ["2020-0220-151845_009451_movie_t-3.jpg", "2020-0220-151845_009451_movie_t-2.jpg", "2020-0220-151845_009451_movie_t-1.jpg", "2020-0220-151845_009451_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial between tall buildings has smooth pavement and several same-direction lanes; traffic is heavy and queued at an intersection. There is a black hatchback stopped in front of the ego car in the ego lane because of a red traffic light ahead, keeping the ego vehicle stationary. A large flatbed truck carrying stacked metal pipes occupies the lane to the right, slightly ahead and also waiting, which limits the ego vehicle's right-side clearance. On the left, two cars advance slowly in their lane toward the queue without changing lanes. Overhead signals show red for the ego direction.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver must stop to avoid a rear-end collision and obey the traffic signal."}
{"id": "train_02283", "split": "train", "clip_key": "2020-0228-150133_039078_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "039078"}, "frames": ["2020-0228-150133_039078_movie_t-3.jpg", "2020-0228-150133_039078_movie_t-2.jpg", "2020-0228-150133_039078_movie_t-1.jpg", "2020-0228-150133_039078_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian in left lane", "environment_perception": "An urban two-way arterial with two lanes per direction is straight and smoothly paved, divided by double white lines; the ego vehicle travels in the left lane amid moderate flow. A black sedan directly ahead in the ego lane moves steadily and sets the pace. In the left curb lane, a large car-carrier truck is parked, and a pedestrian wearing purple pants and a cap stands in the lane beside it checking the truck, narrowing that lane. In the opposite direction, a white box truck approaches in the nearest oncoming lane and continues straight past. Parked vehicles line the left side.", "hazard_reasoning": "There is a pedestrian wearing purple pants and a cap, standing in the left lane, because they are doing a check on the parked truck in the left lane. Driver should be cautious since the pedestrian occupies the lane and may step into the vehicle's path unexpectedly."}
{"id": "train_02284", "split": "train", "clip_key": "2020-0131-103016_076972_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "076972"}, "frames": ["2020-0131-103016_076972_movie_t-3.jpg", "2020-0131-103016_076972_movie_t-2.jpg", "2020-0131-103016_076972_movie_t-1.jpg", "2020-0131-103016_076972_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with three same-direction lanes and a central median runs through a dense streetscape; pavement is dry and intact, and traffic is halted by a signal. A white minivan is stopped ahead in the ego lane at the stop line because the signal shows red, constraining the ego vehicle. To the left, a medium box truck waits in the adjacent lane at the same light, slightly ahead of the minivan. To the right, a silver van stands in the right lane, also waiting near the crosswalk and potentially merging after the light changes. On the far right, a pedestrian steps into the zebra crossing and moves leftward across the lanes under the red. Overhead blue direction boards indicate Kawasaki and Route 15.", "hazard_reasoning": "There is a white minivan stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver must prepare to stop to avoid a collision with the halted vehicle ahead under this situation."}
{"id": "train_02285", "split": "train", "clip_key": "titan_clip_497_000594_movie", "source": {"subset": "titan", "scenario": "clip_497", "frame": "000594"}, "frames": ["titan_clip_497_000594_movie_t-3.jpg", "titan_clip_497_000594_movie_t-2.jpg", "titan_clip_497_000594_movie_t-1.jpg", "titan_clip_497_000594_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way street with a single lane in each direction runs slightly uphill and curves right; the asphalt is smooth and traffic is light with the oncoming lane clear. On the left ahead, a worker pushes a cart of boxes and helps unload a van, standing at the edge of the ego lane and encroaching into the path. Immediately ahead, a small white van is stopped at the left curb with its rear hatch open, occupying part of the lane and narrowing the passage. Farther ahead in the same direction, a larger box truck stands stationary near the left curb, further constricting the lane. Parked cars line the right-side driveways.", "hazard_reasoning": "There is a pedestrian pushing a cart and standing on the left side of the road, because he is helping a person unload a van. The driver should manoeuvre carefully around the pedestrian to avoid a collision as they may move into the lane unexpectedly."}
{"id": "train_02286", "split": "train", "clip_key": "2020-0227-104226_082104_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "082104"}, "frames": ["2020-0227-104226_082104_movie_t-3.jpg", "2020-0227-104226_082104_movie_t-2.jpg", "2020-0227-104226_082104_movie_t-1.jpg", "2020-0227-104226_082104_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs between mid-rise buildings with smooth pavement and heavy, slow same-direction traffic. The ego vehicle travels in the left lane beside a hatched buffer. A red SUV directly ahead in the ego lane slows because of congestion ahead, so the ego car follows at reduced speed. A white box truck is level with the ego vehicle on the left, creeping forward close to the lane line and tightening lateral space. Several large trucks queue in the lanes to the right, inching forward and constraining flow while blocking a clear view further ahead.", "hazard_reasoning": "There is a red SUV slowing down in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision with the slowing vehicle and maintain a safe following distance."}
{"id": "train_02287", "split": "train", "clip_key": "titan_clip_435_000210_movie", "source": {"subset": "titan", "scenario": "clip_435", "frame": "000210"}, "frames": ["titan_clip_435_000210_movie_t-3.jpg", "titan_clip_435_000210_movie_t-2.jpg", "titan_clip_435_000210_movie_t-1.jpg", "titan_clip_435_000210_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around parked truck", "environment_perception": "A narrow urban commercial street with a single shared lane and block-paved surface has no divider or lane markings, and traffic is light with only pedestrians and a stopped truck. Ahead on the left, a large box truck is parked partly in the lane, narrowing the passage. A pedestrian wearing black walks toward the ego along the left side to get around the parked truck, moving into the travel space. Another person stands on the roadway at the truck's rear beside the lane where the ego must pass. Farther ahead, two pedestrians continue along the middle of the street away from the ego, remaining ahead.", "hazard_reasoning": "There is a pedestrian wearing black pants and shirt, walking on the left side of the road, towards the ego car, because of the parked vehicle. The pedestrian may step into the lane to bypass the parked truck, so the driver should manoeuvre carefully around the obstacle."}
{"id": "train_02288", "split": "train", "clip_key": "2020-0207-151349_029408_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "029408"}, "frames": ["2020-0207-151349_029408_movie_t-3.jpg", "2020-0207-151349_029408_movie_t-2.jpg", "2020-0207-151349_029408_movie_t-1.jpg", "2020-0207-151349_029408_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road with dry pavement and a curbside guardrail runs between tall buildings; traffic is heavy and slows under strong sun glare ahead. A white truck directly ahead in the ego lane slows because of congestion in front, constraining the ego vehicle's pace. To the right, a line of cars crawls beside and slightly ahead of the ego vehicle and may merge left into the ego lane. Ahead left, a small car in the adjacent lane proceeds at a similar speed just beyond the truck, holding its lane.", "hazard_reasoning": "A white truck slowing down in the ego lane because of traffic congestion ahead. You should slow down to maintain a safe distance and avoid rear-end collision in the congested traffic."}
{"id": "train_02289", "split": "train", "clip_key": "2020-0203-114632_081601_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "081601"}, "frames": ["2020-0203-114632_081601_movie_t-3.jpg", "2020-0203-114632_081601_movie_t-2.jpg", "2020-0203-114632_081601_movie_t-1.jpg", "2020-0203-114632_081601_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane two-way road runs under an elevated structure, with a dashed centerline, smooth pavement, and light overall flow. A white van ahead in the ego lane slows gradually due to congestion forming farther ahead, and it sets the ego vehicle's pace. The opposing lane shows no immediate oncoming traffic. To the right, a continuous fence borders a parking area with stationary cars beneath the structure, leaving no shoulder, while buildings and utility poles line the left sidewalk. No traffic signals or speed signs are clearly visible.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Drivers should slow down to maintain a safe following distance and avoid collision due to the van's deceleration in congested traffic."}
{"id": "train_02290", "split": "train", "clip_key": "2020-0203-114632_041763_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "041763"}, "frames": ["2020-0203-114632_041763_movie_t-3.jpg", "2020-0203-114632_041763_movie_t-2.jpg", "2020-0203-114632_041763_movie_t-1.jpg", "2020-0203-114632_041763_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with no physical median and chevron hatching has dry, smooth pavement and moderate traffic moving steadily. A silver van ahead in the ego lane pulls away as the flow in front picks up, increasing the gap. To the right, a beige city bus in the adjacent same-direction lane continues at a steady pace farther ahead, limiting merge space. A dark sedan in the right lane advances past and overtakes the van. An overhead gantry shows lane-use arrows for through and right-turn movements.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02291", "split": "train", "clip_key": "2020-0210-155354_001765_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "001765"}, "frames": ["2020-0210-155354_001765_movie_t-3.jpg", "2020-0210-155354_001765_movie_t-2.jpg", "2020-0210-155354_001765_movie_t-1.jpg", "2020-0210-155354_001765_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to maintain safe distance", "environment_perception": "An urban commercial street has one lane in each direction with a dashed centerline, dry pavement, and slow, congested traffic. Ahead in the ego lane a white hatchback is stopped because traffic is backed up, holding the ego vehicle stationary. In the opposing lane to the right, a black minivan approaches slowly past the crosswalk and continues forward without merging. Pedestrians line both sidewalks near the crosswalk, some edging toward the curb but staying off the road, so they may enter when traffic pauses. A decorated van stands at the right curb on the oncoming side, contributing to the narrow feel.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop immediately to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_02292", "split": "train", "clip_key": "titan_clip_1237_000132_movie", "source": {"subset": "titan", "scenario": "clip_1237", "frame": "000132"}, "frames": ["titan_clip_1237_000132_movie_t-3.jpg", "titan_clip_1237_000132_movie_t-2.jpg", "titan_clip_1237_000132_movie_t-1.jpg", "titan_clip_1237_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway, no median, and smooth asphalt shows light traffic as the road continues straight with a gentle bend. A pedestrian wearing a white cap and backpack walks away from the ego vehicle along the left edge, close to the travel lane. Far ahead in the same direction, a small white box truck proceeds along the lane through a constricted stretch with parked vehicles, modestly setting the pace. On the right side farther ahead, another person stands at the curb beside a building without stepping into the roadway. Orange pavement markings are visible, and no traffic signals or stop signs appear.", "hazard_reasoning": "There is a pedestrian wearing a white cap and carrying a backpack and walking on the left side of the road, away from the ego car. The pedestrian could step into the roadway unexpectedly, so the driver should be cautious of their movement."}
{"id": "train_02293", "split": "train", "clip_key": "2020-0220-151845_043424_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "043424"}, "frames": ["2020-0220-151845_043424_movie_t-3.jpg", "2020-0220-151845_043424_movie_t-2.jpg", "2020-0220-151845_043424_movie_t-1.jpg", "2020-0220-151845_043424_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, the asphalt worn and bordered by a metal guardrail on the right, with heavy, mostly stopped traffic. A red flatbed truck with a yellow-covered load is directly ahead in the ego lane and remains stopped because of congestion, holding the ego vehicle in place. To the right, a white van in the adjacent lane edges forward near the striped shoulder and may merge left into the stream. To the left, a black SUV slightly ahead creeps in its lane, limiting any lateral movement. Blue overhead direction signs are visible ahead, and no signal aspect is seen.", "hazard_reasoning": "There is a red truck stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to prevent colliding with the halted truck ahead."}
{"id": "train_02294", "split": "train", "clip_key": "2020-0227-104226_109861_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "109861"}, "frames": ["2020-0227-104226_109861_movie_t-3.jpg", "2020-0227-104226_109861_movie_t-2.jpg", "2020-0227-104226_109861_movie_t-1.jpg", "2020-0227-104226_109861_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows a smooth three-lane divided road with a low shrub median on the right, and traffic moves at a moderate, steady pace. A white box truck travels ahead in the ego lane, driving away while holding lane position and effectively setting the ego car's speed. To the left, a white hatchback runs alongside slightly behind the truck in the adjacent same-direction lane, continuing straight and keeping pace close to the ego vehicle. On the right, a silver hatchback in the neighboring lane holds a similar speed near the truck's rear quarter, maintaining a small lateral gap beside the ego path. No signals or unusual obstacles are visible.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. A traffic cone near the curb indicates potential roadside hazards, so follow the vehicle ahead to maintain a safe path and react to any obstructions."}
{"id": "train_02295", "split": "train", "clip_key": "2020-0206-101736_060742_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "060742"}, "frames": ["2020-0206-101736_060742_movie_t-3.jpg", "2020-0206-101736_060742_movie_t-2.jpg", "2020-0206-101736_060742_movie_t-1.jpg", "2020-0206-101736_060742_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with a central guardrail median and smooth pavement appears under clear skies, and traffic is heavy and slow. Directly ahead in the ego lane, a beige hatchback is stopped because of congestion ahead, holding the ego vehicle in place. Ahead-left, a white cargo truck piled with large bags creeps forward in the adjacent lane, limiting visibility and pacing the queue. Farther ahead, several cars continue queuing in the same direction while oncoming traffic to the right moves past behind the median.", "hazard_reasoning": "There is a beige SUV stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary vehicle and maintain a safe following distance."}
{"id": "train_02296", "split": "train", "clip_key": "2020-0210-101957_001723_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "001723"}, "frames": ["2020-0210-101957_001723_movie_t-3.jpg", "2020-0210-101957_001723_movie_t-2.jpg", "2020-0210-101957_001723_movie_t-1.jpg", "2020-0210-101957_001723_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban commercial street has a two-lane two-way layout with a painted centerline, smooth pavement, and light traffic as the road bends gently right. Ahead on the left curb, a white truck is parked and unloading, narrowing the ego lane. Farther ahead in the left lane, a small flatbed truck moves slowly away from the camera, setting the pace. In the oncoming lane to the right, a white van approaches at a normal speed and remains separated by the centerline. Metal railings keep pedestrians on the sidewalks.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is unloading. The parked truck unloading at the roadside may obstruct the lane and pose a collision risk, so the driver should manoeuvre around it carefully."}
{"id": "train_02297", "split": "train", "clip_key": "titan_clip_399_000312_movie", "source": {"subset": "titan", "scenario": "clip_399", "frame": "000312"}, "frames": ["titan_clip_399_000312_movie_t-3.jpg", "titan_clip_399_000312_movie_t-2.jpg", "titan_clip_399_000312_movie_t-1.jpg", "titan_clip_399_000312_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian movement.", "environment_perception": "An urban commercial street forms a single narrow shared roadway paved with interlocking blocks, with no lane markings or divider; vehicular traffic is light and the car proceeds slowly. On the left near the camera, a pedestrian in a gray T-shirt and black pants carrying a handbag walks away from the car along the left edge, close to the travel path. Ahead on the right, a person with an umbrella lingers near the curb and steps slightly toward the lane, narrowing the available gap. Several other pedestrians farther ahead move along both sides of the street, influencing the car's pace through the corridor. Orange cones and storefront displays line the left side and further constrict the roadway.", "hazard_reasoning": "There is a pedestrian wearing a gray t-shirt, black pants, and carrying a handbag, walking at the left side of the road, away from the ego car. The driver should be aware because the pedestrian could change direction or step into the path unexpectedly."}
{"id": "train_02298", "split": "train", "clip_key": "titan_clip_404_000336_movie", "source": {"subset": "titan", "scenario": "clip_404", "frame": "000336"}, "frames": ["titan_clip_404_000336_movie_t-3.jpg", "titan_clip_404_000336_movie_t-2.jpg", "titan_clip_404_000336_movie_t-1.jpg", "titan_clip_404_000336_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "In an urban area, the ego-vehicle waits at the mouth of a narrow side street where a zebra crossing meets a larger road; the pavement is smooth and overall traffic appears light. Ahead in the crosswalk, a cyclist wearing a blue shirt and blue pants rides toward the camera from the right side of the road, moving into the vehicle's path. Several pedestrians cross left to right in front of the vehicle, including one carrying an umbrella, and they continue through the crosswalk, blocking the exit. A pedestrian-crossing sign and a no-parking sign stand on the left corner.", "hazard_reasoning": "A cyclist wearing blue pants and a blue shirt and cycling on the right side of the road, towards the ego car. The cyclist is approaching the vehicle's path and may cross in front of the ego vehicle, so the driver should slow down to avoid a collision."}
{"id": "train_02299", "split": "train", "clip_key": "2020-0213-143552_052183_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "052183"}, "frames": ["2020-0213-143552_052183_movie_t-3.jpg", "2020-0213-143552_052183_movie_t-2.jpg", "2020-0213-143552_052183_movie_t-1.jpg", "2020-0213-143552_052183_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes to the left of a raised median runs straight, the dry pavement in good condition and traffic light. Ahead in the ego lane, a white box truck drives away from the camera, maintaining its lane and setting the pace as it gradually opens a gap. To the right beyond the median, a white bus travels toward the ego vehicle in the opposite carriageway and continues steadily with no interaction due to the divider. No signals stand out and no hazards are visible.", "hazard_reasoning": "There is a white truck driving away from the ego car, in the ego lane. The driver should follow the vehicle ahead at a safe distance to allow for adequate reaction time if it slows or stops."}
{"id": "train_02300", "split": "train", "clip_key": "titan_clip_241_000330_movie", "source": {"subset": "titan", "scenario": "clip_241", "frame": "000330"}, "frames": ["titan_clip_241_000330_movie_t-3.jpg", "titan_clip_241_000330_movie_t-2.jpg", "titan_clip_241_000330_movie_t-1.jpg", "titan_clip_241_000330_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A dense urban shopping street forms a single narrow lane with brick paving, no median, and light traffic. Ahead in the ego lane, a pedestrian wearing a white shirt and black pants and carrying a handbag walks away from the vehicle along the center of the lane, constraining the pace. To the right, a black sedan is stopped at the curb with its rear open while pedestrians near the shopfront walk along the edge and momentarily step into the roadway. Far ahead, a small car proceeds in the same direction down the street. On the left, a man stands by a bicycle and several cones line the curb, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a handbag, walking in front of the ego car, moving away from the ego car. The pedestrian is directly ahead in the vehicle's path and may change pace or direction unexpectedly, so the driver should carefully manoeuvre around them."}
{"id": "train_02301", "split": "train", "clip_key": "2020-0213-143552_068483_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "068483"}, "frames": ["2020-0213-143552_068483_movie_t-3.jpg", "2020-0213-143552_068483_movie_t-2.jpg", "2020-0213-143552_068483_movie_t-1.jpg", "2020-0213-143552_068483_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with two same-direction lanes runs alongside mid-rise buildings, the dry asphalt in good condition and overall traffic light to moderate; a raised hedge median separates oncoming traffic to the right. The ego vehicle follows a white box truck directly ahead in the ego lane as it slows a short distance away, constraining the ego car's pace. In the adjacent left lane, a white hatchback slightly ahead proceeds straight at a similar speed without merging. No other nearby vehicles interact with the ego path, and no salient traffic signals or signs are visible.", "hazard_reasoning": "There is a white truck slowing in the ego lane, away from the ego car. The truck's deceleration reduces the distance to the ego-vehicle, so you should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_02302", "split": "train", "clip_key": "2020-0228-102841_051810_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "051810"}, "frames": ["2020-0228-102841_051810_movie_t-3.jpg", "2020-0228-102841_051810_movie_t-2.jpg", "2020-0228-102841_051810_movie_t-1.jpg", "2020-0228-102841_051810_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes and no median runs between tall buildings; the pavement is smooth and marked, and traffic is light but halted at a signalized intersection. A light-colored van directly ahead in the ego lane is stopped because the traffic light ahead shows red, holding the ego vehicle in place. A large box truck in the right lane is also stopped slightly ahead, narrowing space and limiting right-side visibility. On a small side ramp to the left, a car waits to merge into the main road. The red signal is visible above the lanes.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because a red traffic light ahead. The driver should stop to maintain safe distance and comply with the red signal."}
{"id": "train_02303", "split": "train", "clip_key": "2020-0127-132751_103279_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "103279"}, "frames": ["2020-0127-132751_103279_movie_t-3.jpg", "2020-0127-132751_103279_movie_t-2.jpg", "2020-0127-132751_103279_movie_t-1.jpg", "2020-0127-132751_103279_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban two-way road with one lane each direction and a solid yellow centerline has dry, smooth pavement and light traffic. A gray van ahead in the ego lane drives away from the ego car at a steady pace, setting the following distance. Two oncoming trucks approach in the opposing lane and continue straight without encroaching. A pedestrian stands on the right sidewalk near the curb and remains on the sidewalk. No salient signals or speed signs are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02304", "split": "train", "clip_key": "titan_clip_583_000246_movie", "source": {"subset": "titan", "scenario": "clip_583", "frame": "000246"}, "frames": ["titan_clip_583_000246_movie_t-3.jpg", "titan_clip_583_000246_movie_t-2.jpg", "titan_clip_583_000246_movie_t-1.jpg", "titan_clip_583_000246_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of unloading truck ahead", "environment_perception": "A narrow two-way urban street with no median and smooth pavement comes into view, and traffic is light as the vehicle approaches a small intersection. A silver car in the oncoming lane ahead moves toward the camera and slows at the cross street, keeping to its lane as it proceeds. On the left edge of the ego lane, a white truck is parked to unload, its rear door open and a worker handling boxes at the tailgate, narrowing the available space and placing a person close to the travel lane. No traffic signals are visible at the junction.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is unloading. The unloading process may cause pedestrians or workers to step into the roadway unexpectedly, so the driver should be aware of potential intrusions."}
{"id": "train_02305", "split": "train", "clip_key": "2020-0220-102630_100061_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "100061"}, "frames": ["2020-0220-102630_100061_movie_t-3.jpg", "2020-0220-102630_100061_movie_t-2.jpg", "2020-0220-102630_100061_movie_t-1.jpg", "2020-0220-102630_100061_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes runs beside a high concrete barrier on the right; the pavement is dry and smooth, and traffic is light to moderate. Ahead in the ego lane, a small truck covered with a green tarp drives away from the camera at a steady pace, which the ego vehicle follows. In the adjacent left lane near the curb, a city bus slows by a stop while remaining in its lane and does not impede the ego car. A pedestrian overpass spans the road, and a no U-turn sign is visible on the right.", "hazard_reasoning": "There is a white truck with a green tarp driving in the ego lane away from the ego car. The driver should be cautious because the truck ahead could slow down unexpectedly, requiring greater following distance."}
{"id": "train_02306", "split": "train", "clip_key": "2020-0131-103016_035957_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "035957"}, "frames": ["2020-0131-103016_035957_movie_t-3.jpg", "2020-0131-103016_035957_movie_t-2.jpg", "2020-0131-103016_035957_movie_t-1.jpg", "2020-0131-103016_035957_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth asphalt approaches a signalized intersection, divided by curbside islands and medians; traffic is moderate and presently halted in our direction. A white sedan directly ahead in the ego lane is stopped at the line because the light is red, holding the ego car. A black taxi in the adjacent lane on the left is also stationary beside the ego vehicle, waiting for the signal. Several cars on the cross street move from right to left through the junction under their green, passing across the ego lane's path. No obstacles or work zones are visible.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of a red traffic light. Stop to maintain a safe distance and avoid collision with the stopped sedan at the red signal."}
{"id": "train_02307", "split": "train", "clip_key": "2020-0217-110854_035105_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "035105"}, "frames": ["2020-0217-110854_035105_movie_t-3.jpg", "2020-0217-110854_035105_movie_t-2.jpg", "2020-0217-110854_035105_movie_t-1.jpg", "2020-0217-110854_035105_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the hatchback immediately", "environment_perception": "An urban multi-lane arterial with a central divider carries heavy same-direction traffic on dry, smooth pavement, and vehicles queue at an intersection. A silver hatchback directly ahead in the ego lane remains stopped at the crosswalk because the signal is red, holding the ego vehicle. In the adjacent right lane a large white coach bus is stopped slightly ahead, parallel to the ego car, and it partly occludes the view into the intersection. To the left, a silver van with other cars forms a slow queue beside the ego vehicle, leaving little space for lateral movement. Overhead traffic lights show red above the lanes, while tall buildings line both sides of the street.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to maintain a safe distance and avoid a collision with the halted vehicle ahead."}
{"id": "train_02308", "split": "train", "clip_key": "2020-0131-135401_030223_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030223"}, "frames": ["2020-0131-135401_030223_movie_t-3.jpg", "2020-0131-135401_030223_movie_t-2.jpg", "2020-0131-135401_030223_movie_t-1.jpg", "2020-0131-135401_030223_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming truck.", "environment_perception": "An urban two-way street leads into a signalized intersection with no median and slightly worn asphalt; traffic is moderate as the ego vehicle approaches. The signal ahead shows green. Ahead at the junction, a white truck comes from the right side of the intersection toward the ego, moving through the intersection and potentially entering the ego lane. Behind it, a small white car also approaches in the oncoming lane, continuing straight and setting the available gap. At the right curb of the intersection, a silver hatchback waits to pull out from the side street, positioned to merge once opposing traffic clears.", "hazard_reasoning": "There is a white truck driving at the right side of the intersection, toward the ego car. The truck's path may conflict with the ego-vehicle if you proceed without yielding, risking a collision."}
{"id": "train_02309", "split": "train", "clip_key": "titan_clip_499_000462_movie", "source": {"subset": "titan", "scenario": "clip_499", "frame": "000462"}, "frames": ["titan_clip_499_000462_movie_t-3.jpg", "titan_clip_499_000462_movie_t-2.jpg", "titan_clip_499_000462_movie_t-1.jpg", "titan_clip_499_000462_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around parked minivan", "environment_perception": "An urban two-way street with a narrow single lane each way and cobblestone pavement runs between low-rise buildings; there is no divider and traffic is light with no oncoming vehicles passing. A white minivan is parked on the left side of the road ahead, narrowing the usable space in the ego lane. A white truck is stopped at the right curb very close to the camera, its nose projecting slightly toward the roadway and further constricting the passage. Pedestrians walk along both sidewalks-a man on the left moving away and two people on the right-while staying on the pavements.", "hazard_reasoning": "The white minivan is parked on the left side of the road. Its presence reduces the available lane width and may obstruct the ego-vehicle's path, increasing the risk of collision. You should carefully manoeuvre around the parked minivan to maintain safe clearance."}
{"id": "train_02310", "split": "train", "clip_key": "2020-0203-154554_028502_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "028502"}, "frames": ["2020-0203-154554_028502_movie_t-3.jpg", "2020-0203-154554_028502_movie_t-2.jpg", "2020-0203-154554_028502_movie_t-1.jpg", "2020-0203-154554_028502_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial runs between tall buildings with dry, well-marked pavement and heavy, slow traffic. A gray semi-truck directly ahead in the ego lane is stopped, blocking the path and dictating the halt. To the right, a white microvan alongside in the adjacent lane inches forward, limiting any chance to merge right. In the left lane ahead, a white van and a small work truck queue tightly and creep with the jam, matching the semi's standstill. Traffic signals are visible farther ahead beneath an elevated roadway, and vehicles in all lanes appear to be waiting at the approach.", "hazard_reasoning": "There is a gray semi-truck stopped in front of the ego car, in the ego lane. The stopped semi-truck ahead requires the driver to stop to avoid a rear-end collision and maintain safe following distance."}
{"id": "train_02311", "split": "train", "clip_key": "titan_clip_1229_000594_movie", "source": {"subset": "titan", "scenario": "clip_1229", "frame": "000594"}, "frames": ["titan_clip_1229_000594_movie_t-3.jpg", "titan_clip_1229_000594_movie_t-2.jpg", "titan_clip_1229_000594_movie_t-1.jpg", "titan_clip_1229_000594_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban narrow two-way street with no median and worn but passable pavement leads toward a cross street with a zebra crossing; traffic is light. Ahead on the left edge, a small group of pedestrians walks toward the vehicle in the roadway, encroaching on the ego lane; one in a white shirt keeps to the left margin where there is no sidewalk. Farther ahead at the intersection, a white car moves right to left along the cross street and clears the junction before the ego arrives. On the right beside a restaurant, two people stand near the curb by the entrance. Orange posts and railings line the right shoulder.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the left side of the road because there is no sidewalk. The driver needs to carefully manoeuvre around the pedestrian to prevent a collision."}
{"id": "train_02312", "split": "train", "clip_key": "2020-0131-135401_003393_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003393"}, "frames": ["2020-0131-135401_003393_movie_t-3.jpg", "2020-0131-135401_003393_movie_t-2.jpg", "2020-0131-135401_003393_movie_t-1.jpg", "2020-0131-135401_003393_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction and a solid yellow centerline runs between buildings and a fence, the pavement smooth with bright shadows as the road bends slightly right; traffic is light. A gray box truck ahead in the ego lane slows, constraining the ego vehicle's pace. On the left sidewalk, a pedestrian walks away along the building frontage and stays off the roadway. The opposing lane to the right shows no oncoming vehicles. A circular roadside sign posts 40, and guardrails and a narrow curb island tighten the lane edges.", "hazard_reasoning": "There is a gray truck slowing down in the ego lane. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_02313", "split": "train", "clip_key": "titan_clip_248_000198_movie", "source": {"subset": "titan", "scenario": "clip_248", "frame": "000198"}, "frames": ["titan_clip_248_000198_movie_t-3.jpg", "titan_clip_248_000198_movie_t-2.jpg", "titan_clip_248_000198_movie_t-1.jpg", "titan_clip_248_000198_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "A narrow urban side street with no centerline runs between mid-rise buildings; the pavement is smooth and traffic is light with no moving vehicles or oncoming traffic. On the near right, a pedestrian in dark clothing walks toward the camera along the roadway edge, momentarily edging into the lane and influencing the approach. Farther ahead on the right, a pedestrian wearing a white shirt and black pants pushes a cart away from the ego car along the curb, moving in the same direction and remaining near the lane edge. A silver van is parked on the left partly jutting into the carriageway beside several parked bicycles, locally narrowing the path.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, pushing a cart, and walking away from the ego car on the right side of the road. The pedestrian could step into the lane while pushing the cart, so the driver should manoeuvre carefully around them to maintain safe distance."}
{"id": "train_02314", "split": "train", "clip_key": "2020-0207-101955_030186_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "030186"}, "frames": ["2020-0207-101955_030186_movie_t-3.jpg", "2020-0207-101955_030186_movie_t-2.jpg", "2020-0207-101955_030186_movie_t-1.jpg", "2020-0207-101955_030186_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "be aware of open door", "environment_perception": "An urban intersection with smooth pavement and a small planted median appears ahead, and traffic is light as the ego vehicle proceeds along a two-way street in the left lane. On the left curb near the corner, a white taxi is stopped with a door open for a passenger, partially occupying the edge of the ego lane and slowing the approach. Immediately to the right, a blue-and-white van is pulled over at the curb and remains stationary, narrowing the available space. Two pedestrians stand at the left corner beside the taxi, waiting at the curb and close to the open door. In the oncoming lane ahead-right, a white car travels through the junction without entering the ego lane.", "hazard_reasoning": "There is a white taxi stopped on the left side of the road, because it is opening a door for a passenger. The stopped taxi is opening a door, which may obstruct traffic or cause sudden pedestrian movements, so the driver should be aware of the open door."}
{"id": "train_02315", "split": "train", "clip_key": "titan_clip_1112_000144_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1112_000144_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1112_000144_movie_t-3_augB1.jpg", "titan_clip_1112_000144_movie_t-2_augB1.jpg", "titan_clip_1112_000144_movie_t-1_augB1.jpg", "titan_clip_1112_000144_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with a single narrow lane and block paving extends ahead, flanked by buildings and shallow sidewalks; there are no vehicles and overall flow is pedestrian-dominated. Orange cones line the right curb and the pavement appears in good condition. Two pedestrians walk down the middle ahead, one female with a red purse slightly left of the ego path and a male to the right, both continuing forward in the ego lane and likely to constrain the vehicle's pace. Several other pedestrians stand or stroll along both sides and some drift toward the lane farther ahead, creating intermittent crossing movements. A zebra crossing lies in the foreground at the entry to this shared street.", "hazard_reasoning": "There are two pedestrians walking down the middle of the road, one female with a red purse, on the left side of the ego-car, and a male, on the right side of the ego-car, because there is no sidewalk. The driver should navigate carefully as pedestrians occupying the road center increase collision risk."}
{"id": "train_02316", "split": "train", "clip_key": "titan_clip_1373_000180_movie", "source": {"subset": "titan", "scenario": "clip_1373", "frame": "000180"}, "frames": ["titan_clip_1373_000180_movie_t-3.jpg", "titan_clip_1373_000180_movie_t-2.jpg", "titan_clip_1373_000180_movie_t-1.jpg", "titan_clip_1373_000180_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "In an urban setting, the ego vehicle approaches a narrow two-way local road with a single lane each way, no divider, smooth pavement, and very light traffic. Ahead to the right, a pedestrian in a black skirt carrying a handbag crosses from right to left, moving away from the camera in the middle of the road and occupying the ego lane. On the left foreground, another pedestrian steps off the curb and walks rightward across the path in front of the vehicle. A blue pedestrian crossing sign and a roadside convex mirror mark the junction.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing a black skirt, and crossing in the middle of the road, from the right side to the left side, away from the ego car. The driver should carefully manoeuvre around the crossing pedestrian to avoid a collision."}
{"id": "train_02317", "split": "train", "clip_key": "2020-0203-114632_059655_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "059655"}, "frames": ["2020-0203-114632_059655_movie_t-3.jpg", "2020-0203-114632_059655_movie_t-2.jpg", "2020-0203-114632_059655_movie_t-1.jpg", "2020-0203-114632_059655_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban four-lane road with a flexible-post median and a wide zebra crossing stretches ahead; the asphalt looks smooth and dry, and traffic is light as the car approaches a signalized intersection. Ahead in the same direction, a few small vans continue through the junction at a steady pace without constraining the ego vehicle. On the right in the oncoming curb lane, a large truck stands stopped by the sidewalk, remaining outside the travel lane. On the left sidewalk near a shopfront, two pedestrians linger beside a small parked truck, staying off the crosswalk. A speed-limit 50 sign and an overhead direction board are visible at the approach.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02318", "split": "train", "clip_key": "2020-0204-150838_034278_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "034278"}, "frames": ["2020-0204-150838_034278_movie_t-3.jpg", "2020-0204-150838_034278_movie_t-2.jpg", "2020-0204-150838_034278_movie_t-1.jpg", "2020-0204-150838_034278_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection with no median and dry, worn pavement appears, and overall traffic moves slowly in queues near the junction. A white microvan directly ahead in the ego lane slows and creeps forward because congestion builds through the intersection, constraining the ego vehicle's pace. To the right, another white van in the adjacent same-direction lane advances slowly alongside, keeping pace with the queue. Farther ahead-left, a smaller white van moves slowly within the same queue. Several pedestrians stand at the edges of the crosswalks on both sides, waiting on the sidewalks and not entering the roadway.", "hazard_reasoning": "A white van slowing down in front of the ego car because of the traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a collision."}
{"id": "train_02319", "split": "train", "clip_key": "2020-0206-142535_046005_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "046005"}, "frames": ["2020-0206-142535_046005_movie_t-3.jpg", "2020-0206-142535_046005_movie_t-2.jpg", "2020-0206-142535_046005_movie_t-1.jpg", "2020-0206-142535_046005_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with lanes in both directions and no physical median shows smooth pavement and heavy, stop-and-go flow in the ego's direction. A gray hatchback stopped ahead in the ego lane remains stationary because of congestion, holding the ego vehicle. To the left, a white taxi creeps forward alongside in the adjacent same-direction lane, limiting any chance to merge. Farther ahead in that lane, a yellow tour bus waits in the queue and contributes to the slowdown. On the right, light oncoming traffic moves past in the opposite-direction lanes beyond the double white lines without interacting. An overhead blue sign displaying 8-20 is visible above the roadway.", "hazard_reasoning": "There is a gray hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver must stop immediately to avoid colliding with the halted vehicle."}
{"id": "train_02320", "split": "train", "clip_key": "2020-0213-143552_007522_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "007522"}, "frames": ["2020-0213-143552_007522_movie_t-3.jpg", "2020-0213-143552_007522_movie_t-2.jpg", "2020-0213-143552_007522_movie_t-1.jpg", "2020-0213-143552_007522_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement runs straight beneath a pedestrian footbridge, divided only by painted lines, and traffic is light in both directions. The ego vehicle proceeds in the left lane. Ahead in the same lane near the curb, a small white truck stands partly in the lane, reducing the available space for the ego vehicle. Behind it at the curb, a white hatchback is parked. To the right, an oncoming red car travels toward the camera in its lane, separated by the center markings. A cyclist rides along the left sidewalk parallel to traffic. Strong purple glare on the left side of the view partially obscures the scene, though the roadway itself remains clear.", "hazard_reasoning": "No hazards are detected in the scene; traffic is flowing steadily, lane markings are clear, and there are no pedestrians or obstacles, so the driver can maintain current speed safely."}
{"id": "train_02321", "split": "train", "clip_key": "2020-0204-150838_052130_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "052130"}, "frames": ["2020-0204-150838_052130_movie_t-3.jpg", "2020-0204-150838_052130_movie_t-2.jpg", "2020-0204-150838_052130_movie_t-1.jpg", "2020-0204-150838_052130_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road approaches a signalized intersection beneath an elevated roadway, with marked, smooth pavement and light to moderate same-direction traffic and no median. A gray box truck ahead in the ego lane drives away at low speed, setting the ego car's pace as it continues toward the junction. In the adjacent left lane, a small white van slightly ahead proceeds straight at a similar speed, remaining parallel to the ego lane. Farther ahead in the same left lane, another white van continues through the intersection and creates additional spacing. The traffic signal ahead shows green arrows for permitted turning movements, and vehicles advance through the intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02322", "split": "train", "clip_key": "titan_clip_1201_000174_movie", "source": {"subset": "titan", "scenario": "clip_1201", "frame": "000174"}, "frames": ["titan_clip_1201_000174_movie_t-3.jpg", "titan_clip_1201_000174_movie_t-2.jpg", "titan_clip_1201_000174_movie_t-1.jpg", "titan_clip_1201_000174_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian ahead", "environment_perception": "An urban neighborhood street is very narrow with a single carriageway, no median or sidewalks, and smooth pavement; no vehicles are present so traffic is light. Ahead slightly left, a pedestrian in a white shirt walks away along the left edge because there is no sidewalk, occupying the ego path and constraining speed. On the left by a fence and storefront, two people stand close to the curb near the lane, drawing attention as the car approaches. A 24-hour parking sign is visible on the right beside shops, and utility poles and planters sit close to the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking on the left side of the road away from the ego car, because there is no sidewalk. The pedestrian is forced onto the roadway and may cross unexpectedly, so the driver should yield."}
{"id": "train_02323", "split": "train", "clip_key": "2020-0220-102630_001354_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "001354"}, "frames": ["2020-0220-102630_001354_movie_t-3.jpg", "2020-0220-102630_001354_movie_t-2.jpg", "2020-0220-102630_001354_movie_t-1.jpg", "2020-0220-102630_001354_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes, a right-side guardrail, and smooth pavement; traffic is moderate and generally flowing. A white car in the ego lane ahead accelerates and opens a gap as it proceeds straight through the junction on a green light. A silver minivan in the lane to the left travels slightly ahead at a steady pace, remaining parallel to the ego path and limiting a leftward merge. Pedestrians walk along the sidewalk on the right behind the railing, staying clear of the roadway. Overhead traffic signals show green and gantry signs mark upcoming directions.", "hazard_reasoning": "There is a white sedan accelerating away from the ego car, in the ego lane in front of the ego car, because of the green traffic light. The light has turned green and vehicles are beginning to move, so the driver should start moving to maintain traffic flow and avoid delaying other road users."}
{"id": "train_02324", "split": "train", "clip_key": "titan_clip_629_000078_movie", "source": {"subset": "titan", "scenario": "clip_629", "frame": "000078"}, "frames": ["titan_clip_629_000078_movie_t-3.jpg", "titan_clip_629_000078_movie_t-2.jpg", "titan_clip_629_000078_movie_t-1.jpg", "titan_clip_629_000078_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street with shopfronts and trees has smooth pavement, no centerline, and a thin painted edge on the right; there is no moving motor traffic and overall flow is light. On the left side of the road close ahead, a pedestrian carrying a handbag looks at her phone while walking toward the ego vehicle along the carriageway, and may step into the vehicle's line. Farther ahead near the middle, a cyclist rides away in the lane, occupying the path ahead. A few other pedestrians in the distance keep to the right edge and walk away without entering the roadway.", "hazard_reasoning": "There is a pedestrian carrying a handbag, looking into her phone, and walking on the left side of the road, toward the ego car. The pedestrian's distraction and proximity to the roadway could lead her to step into the lane unexpectedly, so the driver should manoeuvre carefully to maintain a safe distance."}
{"id": "train_02325", "split": "train", "clip_key": "2020-0131-103016_085747_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "085747"}, "frames": ["2020-0131-103016_085747_movie_t-3.jpg", "2020-0131-103016_085747_movie_t-2.jpg", "2020-0131-103016_085747_movie_t-1.jpg", "2020-0131-103016_085747_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes and metal railings on both sides has dry, intact pavement and moderate, steadily moving traffic. A white van drives ahead in the right lane, continuing straight at a steady pace in front of the ego car. A small white hatchback remains ahead in the ego lane, moving straight and setting the ego vehicle's pace. A motorcyclist rides along the left sidewalk behind a railing, parallel to traffic and not entering the roadway. An overhead pedestrian bridge spans the road, and a small piece of white debris lies in the right lane ahead.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02326", "split": "train", "clip_key": "2020-0227-104226_030081_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "030081"}, "frames": ["2020-0227-104226_030081_movie_t-3.jpg", "2020-0227-104226_030081_movie_t-2.jpg", "2020-0227-104226_030081_movie_t-1.jpg", "2020-0227-104226_030081_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane in each direction runs straight with a double yellow centerline and dry, well-kept pavement; traffic is light and the ego vehicle travels in the left lane. A white box truck is directly ahead in the ego lane and pulls away, driving off smoothly because the road ahead is clear. On the left, another box truck stands stationary at a loading bay by the curb, parallel to the roadway and not intruding into the lane. A pedestrian walks along the left sidewalk near the loading area, remaining outside the roadway. The oncoming lane shows no nearby vehicles.", "hazard_reasoning": "There is a white truck driving away from the ego car, in the ego lane, because the road ahead is clear, in front of the ego car. The driver should be cautious as the truck may brake suddenly or obstruct the view of the road ahead, requiring a prompt response."}
{"id": "train_02327", "split": "train", "clip_key": "titan_clip_242_000864_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_242_000864_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_242_000864_movie_t-3_augB1.jpg", "titan_clip_242_000864_movie_t-2_augB1.jpg", "titan_clip_242_000864_movie_t-1_augB1.jpg", "titan_clip_242_000864_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "A narrow urban side street with no centerline and smooth pavement runs between buildings toward a small intersection, and vehicular traffic is absent while overall movement is slow due to pedestrians. On the left edge ahead, a group of three pedestrians walks away along the lane close to the curb, narrowing the usable path. Farther ahead near the center, a pedestrian in a white T-shirt and denim shorts walks away from the car within the lane, constraining the pace. At the junction ahead, another pedestrian crosses from right to left on the cross street and could enter the vehicle's path as it reaches the intersection. A blue one-way sign pointing straight is posted before the junction, and several parked bicycles line the right side, slightly encroaching on the roadway.", "hazard_reasoning": "There is a pedestrian wearing denim shorts and a white t-shirt and walking on the left side of the road, away from the ego car. The pedestrian could step into the roadway unexpectedly, so the driver should carefully manoeuvre around the pedestrian."}
{"id": "train_02328", "split": "train", "clip_key": "2020-0207-151349_055422_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_055422_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_055422_movie_t-3_augB1.jpg", "2020-0207-151349_055422_movie_t-2_augB1.jpg", "2020-0207-151349_055422_movie_t-1_augB1.jpg", "2020-0207-151349_055422_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban street with two lanes in the ego direction and no median runs between mid-rise buildings; the asphalt is worn but dry and traffic moves slowly. A gray sedan directly ahead in the ego lane slows because of congestion ahead, setting the ego-car's pace. In the adjacent right lane, a large box truck ahead also creeps forward in the queue, keeping the flow heavy. A black van slightly ahead to the right travels slowly near the curb in the right lane, reducing lateral space. A signalized intersection is visible in the distance.", "hazard_reasoning": "There's a gray sedan slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow to maintain a safe following distance and avoid collision under this situation."}
{"id": "train_02329", "split": "train", "clip_key": "2020-0210-101957_025014_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "025014"}, "frames": ["2020-0210-101957_025014_movie_t-3.jpg", "2020-0210-101957_025014_movie_t-2.jpg", "2020-0210-101957_025014_movie_t-1.jpg", "2020-0210-101957_025014_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "be aware of the motorcycle ahead", "environment_perception": "An urban multilane arterial with two same-direction lanes runs straight with a painted orange median and diagonal hatching; the pavement looks smooth and traffic is moderate. A motorcycle of undetermined color rides ahead in the ego lane, moving away at a steady pace and effectively setting the ego car's speed. In the adjacent right same-direction lane slightly ahead, a black van cruises forward and gradually passes, reducing immediate room for a lane change. In the opposing carriageway to the far right, a white sedan approaches as oncoming traffic separated by the median. A pedestrian footbridge spans the road ahead, with sidewalks, railings, and trimmed roadside trees on both sides.", "hazard_reasoning": "There is a motorcycle of undetermined color, driving in the ego lane away from the ego car. The motorcycle may change lanes or alter speed unexpectedly, so the driver should remain vigilant."}
{"id": "train_02330", "split": "train", "clip_key": "2020-0207-101955_073565_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "073565"}, "frames": ["2020-0207-101955_073565_movie_t-3.jpg", "2020-0207-101955_073565_movie_t-2.jpg", "2020-0207-101955_073565_movie_t-1.jpg", "2020-0207-101955_073565_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "The scene is inside a highway tunnel on a two-lane same-direction carriageway with dry, smooth pavement and wall-mounted lights; traffic is light. A gray cargo truck travels ahead in the ego lane, moving away steadily and effectively setting the ego car's pace. The adjacent right lane appears clear with no vehicles alongside. Daylight is visible at the tunnel's exit ahead, and no signage or hazards stand out.", "hazard_reasoning": "There is a gray truck driving in the ego lane, away from the ego car. The tunnel environment may limit visibility, so following the vehicle ahead provides guidance and helps maintain a safe path."}
{"id": "train_02331", "split": "train", "clip_key": "2020-0221-115122_021929_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "021929"}, "frames": ["2020-0221-115122_021929_movie_t-3.jpg", "2020-0221-115122_021929_movie_t-2.jpg", "2020-0221-115122_021929_movie_t-1.jpg", "2020-0221-115122_021929_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multilane road runs under an elevated structure, pavement smooth, with traffic queued and slow near a signalized junction. Two lanes carry traffic in the ego direction, with a curb and plantings on the left separating a side path. A white hatchback directly ahead in the ego lane is stopped because the traffic light ahead shows red, holding the ego vehicle in the queue. In the adjacent right lane, a blue hatchback slightly ahead is also stopped, remaining parallel with the ego vehicle and limiting lateral options. Farther ahead, several cars and a box truck wait in line. A cyclist on the left-side path rides forward past the queue. The overhead signal displays red.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. Driver should stop immediately to maintain a safe following distance and avoid colliding with the stationary vehicle."}
{"id": "train_02332", "split": "train", "clip_key": "2020-0220-151845_048944_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "048944"}, "frames": ["2020-0220-151845_048944_movie_t-3.jpg", "2020-0220-151845_048944_movie_t-2.jpg", "2020-0220-151845_048944_movie_t-1.jpg", "2020-0220-151845_048944_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road under an elevated structure has smooth pavement and heavy, stop-and-go traffic in the same direction. A pink flatbed truck directly ahead in the ego lane is stopped by congestion and holds the ego vehicle. In the left adjacent lane, a black van waits in the queue beside the ego car. In the right lane, a silver microvan creeps forward alongside, close to the ego car. Overhead blue guide signs indicate routes toward Hachioji and Takao and announce an expressway entrance in 200 m. A small coned work area with workers is visible along the left roadside.", "hazard_reasoning": "There is a pink truck stopped in front of the ego car, because of traffic congestion ahead. The stopped vehicle signals a slowdown in traffic flow, so the driver should stop to avoid collisions with halted traffic."}
{"id": "train_02333", "split": "train", "clip_key": "titan_clip_1386_000270_movie", "source": {"subset": "titan", "scenario": "clip_1386", "frame": "000270"}, "frames": ["titan_clip_1386_000270_movie_t-3.jpg", "titan_clip_1386_000270_movie_t-2.jpg", "titan_clip_1386_000270_movie_t-1.jpg", "titan_clip_1386_000270_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban backstreet with a narrow undivided carriageway and patched asphalt shows light traffic throughout. The ego-vehicle proceeds along the left side between close buildings. A black minivan ahead in the same direction creeps forward and briefly pauses, constraining the pace. On the right edge, a man walks beside fencing where green traffic cones line the roadway, and he remains close to the curb with limited clearance to the lane. The work zone continues along the right with exposed ground beside the pavement, posing a roadside hazard. No traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a traffic cone on the right side of the road, indicating a construction site. Drivers should slow down to safely navigate the area and avoid hitting cones or workers."}
{"id": "train_02334", "split": "train", "clip_key": "2020-0210-155354_005534_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "005534"}, "frames": ["2020-0210-155354_005534_movie_t-3.jpg", "2020-0210-155354_005534_movie_t-2.jpg", "2020-0210-155354_005534_movie_t-1.jpg", "2020-0210-155354_005534_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one lane each way approaches a railway overpass; the pavement is dry and intact, and traffic is heavy with slow stop-and-go flow. A white SUV directly ahead in the ego lane is stopped because congestion stacks up under the bridge. Farther ahead in the same direction, a bus waits in the queue and sets the pace. Oncoming vehicles use the opposite lane to the right without impeding the ego lane. Pedestrians crowd the sidewalks on both sides behind railings, walking past shopfronts but staying off the road. A low-clearance warning sign on the overpass indicates a height limit for tall vehicles.", "hazard_reasoning": "There is a white SUV stopped in front of the ego-car, because of the traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a collision in slow-moving traffic."}
{"id": "train_02335", "split": "train", "clip_key": "titan_clip_1355_000228_movie", "source": {"subset": "titan", "scenario": "clip_1355", "frame": "000228"}, "frames": ["titan_clip_1355_000228_movie_t-3.jpg", "titan_clip_1355_000228_movie_t-2.jpg", "titan_clip_1355_000228_movie_t-1.jpg", "titan_clip_1355_000228_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way street with one narrow lane in each direction, no median, and patched asphalt shows light traffic. A dark car ahead in the ego lane travels away at low speed and sets the pace. On the left, a pedestrian wearing black pants and a black jacket and carrying a handbag walks away along the curb near the lane edge, and may enter the ego path. Farther ahead on the right, a small white truck stands stopped at the curb in the oncoming lane, narrowing that side but not blocking the ego lane. Bicycles, cones, and boards clutter the left storefront area.", "hazard_reasoning": "There is a pedestrian wearing black pants, a black jacket, and carrying a handbag, walking at the left side of the road, away from the ego car. The pedestrian could step into the driving lane unexpectedly, so the driver should manoeuvre carefully around the pedestrian to maintain safety."}
{"id": "train_02336", "split": "train", "clip_key": "titan_clip_297_000564_movie", "source": {"subset": "titan", "scenario": "clip_297", "frame": "000564"}, "frames": ["titan_clip_297_000564_movie_t-3.jpg", "titan_clip_297_000564_movie_t-2.jpg", "titan_clip_297_000564_movie_t-1.jpg", "titan_clip_297_000564_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian", "environment_perception": "An urban residential two-way street with no median and smooth pavement stretches ahead, and traffic is light. Buildings line both sides, and several vehicles are parked along the left curb, locally narrowing the carriageway. On the right edge near the camera, a pedestrian carrying a bag walks away from the ego vehicle along the narrow shoulder, remaining close to the curb and near the ego lane. Far ahead in the same direction, a white van continues up the street past the parked cars, modestly constraining the pace. A car protruding from a left-side driveway further tightens the available space.", "hazard_reasoning": "There is a pedestrian wearing a pink shirt, carrying a bag, walking on the right side of the road, away from the ego car. The pedestrian could step off the curb or into the lane unexpectedly, so the driver should remain vigilant and be ready to react."}
{"id": "train_02337", "split": "train", "clip_key": "titan_clip_400_000102_movie", "source": {"subset": "titan", "scenario": "clip_400", "frame": "000102"}, "frames": ["titan_clip_400_000102_movie_t-3.jpg", "titan_clip_400_000102_movie_t-2.jpg", "titan_clip_400_000102_movie_t-1.jpg", "titan_clip_400_000102_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian with cart", "environment_perception": "A narrow urban shopping street with block-paved surface forms a single shared two-way lane without a divider, and traffic is light. A small delivery truck stands ahead near the center of the lane, restricting the available passage. On the right side, a pedestrian wearing a blue shirt and black pants pushes a blue cart toward the camera along the roadway edge, approaching the vehicle's path. Along the left storefronts, two pedestrians linger close to the curb while attending to shop displays, further narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, and pushing a blue cart towards the ego car, on the right side of the road. The driver should carefully manoeuvre around the pedestrian and their cart to avoid a collision and ensure safe passage."}
{"id": "train_02338", "split": "train", "clip_key": "2020-0131-103016_047272_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "047272"}, "frames": ["2020-0131-103016_047272_movie_t-3.jpg", "2020-0131-103016_047272_movie_t-2.jpg", "2020-0131-103016_047272_movie_t-1.jpg", "2020-0131-103016_047272_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial runs through a tight construction corridor, with temporary barriers on both sides, rough patched pavement, and traffic moving at a slow to moderate pace. A black van ahead in the ego lane slows because congestion builds further up the road, constraining the ego car's speed. To the right, a white hatchback in the adjacent same-direction lane travels slightly faster in parallel, then matches the slow flow. Farther ahead in that right lane, a light-colored sedan also eases off as it closes on the forming queue. Construction machinery and materials sit behind the barriers, narrowing the usable lanes but not blocking them.", "hazard_reasoning": "There is a black van slowing in front of the ego car in the ego lane because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid colliding with the slowing vehicle."}
{"id": "train_02339", "split": "train", "clip_key": "titan_clip_1159_000222_movie", "source": {"subset": "titan", "scenario": "clip_1159", "frame": "000222"}, "frames": ["titan_clip_1159_000222_movie_t-3.jpg", "titan_clip_1159_000222_movie_t-2.jpg", "titan_clip_1159_000222_movie_t-1.jpg", "titan_clip_1159_000222_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked truck", "environment_perception": "An urban two-way street with single narrow lanes and no median stretches ahead, the pavement smooth and traffic very light as the ego-vehicle moves straight. On the right curb ahead, a stationary work truck is parked, as noted, and it slightly narrows the opposing lane but does not intrude into the ego path. A line of cones and small barriers appears further ahead near the storefronts, indicating minor roadside activity without affecting flow. No traffic signals or speed signs are clearly visible.", "hazard_reasoning": "There is a red truck parked on the right side of the road. The parked truck partially blocks the driving lane and may force a lane change or speed reduction, so the driver should be aware to adjust accordingly."}
{"id": "train_02340", "split": "train", "clip_key": "2020-0228-102841_070508_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "070508"}, "frames": ["2020-0228-102841_070508_movie_t-3.jpg", "2020-0228-102841_070508_movie_t-2.jpg", "2020-0228-102841_070508_movie_t-1.jpg", "2020-0228-102841_070508_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban side street with a single narrow lane and no centerline passes between a rail-side fence and a construction site; the pavement is dry and traffic is light with no vehicles visible. Ahead slightly left, a pedestrian in a pink jacket walks away from the camera along the marked crosswalk across the ego lane, briefly occupying the path. On the left edge near the railing, two people with bicycles stand or walk slowly along the sidewalk, remaining out of the lane. Far ahead by the construction gate, a person waits beside cones near the curb without moving into traffic. A 30 speed-limit sign and a pedestrian crossing sign are posted on the left, and the work zone barriers narrow the roadway ahead.", "hazard_reasoning": "There is a pedestrian wearing a pink jacket and walking in a pedestrian crosswalk, away from the ego car. The pedestrian is in the vehicle's potential path and the driver must stop to yield right of way and avoid a collision."}
{"id": "train_02341", "split": "train", "clip_key": "2020-0225-145150_007090_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "007090"}, "frames": ["2020-0225-145150_007090_movie_t-3.jpg", "2020-0225-145150_007090_movie_t-2.jpg", "2020-0225-145150_007090_movie_t-1.jpg", "2020-0225-145150_007090_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with multiple lanes in each direction, no physical median, and slightly worn asphalt carries moderate, steadily moving traffic as the ego vehicle approaches a signalized intersection with broad crosswalks. A gold van ahead in the ego lane travels straight and pulls away from the ego car, setting the pace. A white hatchback ahead left continues straight in the adjacent lane with stable spacing and no sign of merging. A small flatbed truck ahead right proceeds in the right lane parallel to the ego vehicle without encroaching.", "hazard_reasoning": "There is a gold van driving in the ego lane, away from the ego car. Following this vehicle ensures you maintain proper lane positioning and a safe distance as traffic moves."}
{"id": "train_02342", "split": "train", "clip_key": "titan_clip_11_000066_movie", "source": {"subset": "titan", "scenario": "clip_11", "frame": "000066"}, "frames": ["titan_clip_11_000066_movie_t-3.jpg", "titan_clip_11_000066_movie_t-2.jpg", "titan_clip_11_000066_movie_t-1.jpg", "titan_clip_11_000066_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with a single narrow one-way lane paved with bricks runs between tall shopfronts; there is no median and the surface is smooth, with light traffic throughout. A black van ahead in the ego lane moves slowly down the center of the street, modestly setting the pace. A pedestrian wearing a black shirt stands at the left edge of the roadway ahead in front of the ego-car near the curb, pausing beside the travel lane and briefly narrowing the available space. Orange cones and shop signs line the right sidewalk near the curb but do not intrude into the lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and standing on the left side of the road, in front of the ego-car, because of the parked vehicle. The driver needs to carefully manoeuvre around this pedestrian to avoid a collision under these conditions."}
{"id": "train_02343", "split": "train", "clip_key": "2020-0226-101332_065369_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "065369"}, "frames": ["2020-0226-101332_065369_movie_t-3.jpg", "2020-0226-101332_065369_movie_t-2.jpg", "2020-0226-101332_065369_movie_t-1.jpg", "2020-0226-101332_065369_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial with no median visible is filmed in wet conditions, and traffic is heavy and mostly stopped as vehicles queue at a signalized intersection. Directly ahead in the ego lane, a gray van is stopped as the overhead light shows yellow, preventing the ego car from advancing. To the left, a white wagon sits slightly behind in the neighboring lane and inches forward with the queue without cutting in. To the right, another gray van in the adjacent lane is also halted or creeping, staying close alongside. The overhead traffic signal displays yellow above the intersection.", "hazard_reasoning": "There is a gray van stopped in front of the ego car because of a yellow traffic light. You should stop promptly to avoid a collision with the halted vehicle and comply with the traffic signal."}
{"id": "train_02344", "split": "train", "clip_key": "2020-0131-135401_044976_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "044976"}, "frames": ["2020-0131-135401_044976_movie_t-3.jpg", "2020-0131-135401_044976_movie_t-2.jpg", "2020-0131-135401_044976_movie_t-1.jpg", "2020-0131-135401_044976_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the SUV to avoid collision", "environment_perception": "An urban two-lane street with a solid centerline runs between close-set buildings, with metal railings protecting the sidewalks; the pavement looks smooth and traffic is light, with little oncoming flow. A white mid-SUV directly ahead in the ego lane is stopped at the intersection and holds the ego car, because the traffic light ahead is red. The overhead and side-mounted signals display red over a cross street just beyond a marked crosswalk. No other notable road users or hazards appear.", "hazard_reasoning": "There is a white mid-SUV stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop to avoid rear-ending the halted vehicle at the red light."}
{"id": "train_02345", "split": "train", "clip_key": "2020-0127-132751_036426_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "036426"}, "frames": ["2020-0127-132751_036426_movie_t-3.jpg", "2020-0127-132751_036426_movie_t-2.jpg", "2020-0127-132751_036426_movie_t-1.jpg", "2020-0127-132751_036426_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement and a barrier-separated side lane on the right unfolds ahead; traffic is moderate and gradually bunching in the distance. A black sedan directly ahead in the ego lane slows because of traffic congestion ahead, setting the pace. In the adjacent lane to the right, a dark SUV runs slightly ahead at a steady speed but remains in its lane without merging into the ego path. Farther ahead several cars queue in the same direction. An overhead blue guide sign shows destinations 300 m ahead, and a pedestrian overpass spans the road.", "hazard_reasoning": "There is a black sedan slowing in the ego lane because of traffic congestion ahead. Because the black sedan is slowing due to congestion ahead, the driver should reduce speed to maintain a safe distance and avoid a collision."}
{"id": "train_02346", "split": "train", "clip_key": "2020-0203-154554_080201_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_080201_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_080201_movie_t-3_augB1.jpg", "2020-0203-154554_080201_movie_t-2_augB1.jpg", "2020-0203-154554_080201_movie_t-1_augB1.jpg", "2020-0203-154554_080201_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road lined with trees and mid-rise buildings extends ahead under low sun. The ego travels in a single left lane on dry, well-marked pavement, divided from oncoming traffic by a painted chevron buffer, and overall flow is heavy and slow. A white sedan ahead in the ego lane slows because of traffic congestion ahead and sets the pace. Farther ahead in the same lane, a white van creeps in the queue. On the right, an oncoming white hatchback continues straight in its lane beyond the painted buffer with no interaction. Along the left curb, a black sedan sits stopped near the ego path. Bright glare toward the horizon reduces visibility slightly.", "hazard_reasoning": "There is a white sedan slowing in the ego lane, away from the ego car, because of traffic congestion ahead. Slow down to match the reduced speed and maintain safe distance in the congested traffic."}
{"id": "train_02347", "split": "train", "clip_key": "2020-0206-101736_081252_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "081252"}, "frames": ["2020-0206-101736_081252_movie_t-3.jpg", "2020-0206-101736_081252_movie_t-2.jpg", "2020-0206-101736_081252_movie_t-1.jpg", "2020-0206-101736_081252_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban road with two same-direction lanes runs straight beside a green noise barrier on the right; the pavement is smooth and traffic flows at a moderate, steady pace. A gray flatbed truck drives ahead in the ego lane, moving away from the ego car and guiding the path forward. In the adjacent left lane, a blue truck continues ahead at a similar pace, parallel to the ego vehicle. From a side street on the left, a white crane truck edges into the roadway, crossing the near lane and potentially merging into the flow ahead.", "hazard_reasoning": "There is a gray truck driving in the ego lane, away from the ego car. Because the barrier limits forward visibility and the truck occupies your lane, maintain awareness of its position to anticipate any speed changes."}
{"id": "train_02348", "split": "train", "clip_key": "2020-0214-145407_069402_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "069402"}, "frames": ["2020-0214-145407_069402_movie_t-3.jpg", "2020-0214-145407_069402_movie_t-2.jpg", "2020-0214-145407_069402_movie_t-1.jpg", "2020-0214-145407_069402_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban arterial with two lanes in the ego direction runs between mid-rise buildings, divided from oncoming lanes by a hedge median; the pavement looks smooth and traffic is heavy with slow, stop-and-go movement. A white sedan directly ahead in the ego lane slows because of congestion and limits the ego car's pace. A red hatchback slightly ahead to the left moves slowly in the adjacent lane, keeping roughly even with the ego vehicle. Several vans and a bus farther ahead in both lanes queue and creep forward, forming the bottleneck. Blue overhead direction signs are visible ahead.", "hazard_reasoning": "A white sedan is slowing in front of the ego car in the ego lane, because of traffic congestion. Slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_02349", "split": "train", "clip_key": "titan_clip_771_000096_movie", "source": {"subset": "titan", "scenario": "clip_771", "frame": "000096"}, "frames": ["titan_clip_771_000096_movie_t-3.jpg", "titan_clip_771_000096_movie_t-2.jpg", "titan_clip_771_000096_movie_t-1.jpg", "titan_clip_771_000096_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with no lane markings or median has smooth pavement and light vehicle flow but frequent pedestrian activity. Ahead in the center of the roadway, a pedestrian wearing black pants walks away from the ego car, occupying the travel path and constraining the pace. Farther ahead along the right edge, two pedestrians also walk away near the storefronts, close to the lane and potentially stepping into it. A white van is stopped on the left near the ego vehicle, encroaching into the roadway and tightening the passage, with additional parked vehicles lining the left side and further narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing black pants and walking in the middle of the road, away from the ego car. This pedestrian is in the vehicle's path and could unexpectedly change direction, so the driver should slow down to ensure safety."}
{"id": "train_02350", "split": "train", "clip_key": "2020-0129-105040_102149_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "102149"}, "frames": ["2020-0129-105040_102149_movie_t-3.jpg", "2020-0129-105040_102149_movie_t-2.jpg", "2020-0129-105040_102149_movie_t-1.jpg", "2020-0129-105040_102149_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial with no physical median and smooth pavement carries moderate traffic as the ego vehicle approaches a signalized intersection. A white pickup directly ahead in the ego lane slows because a truck farther ahead is also slowing, constraining the ego vehicle's pace. A large box truck in the neighboring lane ahead also decelerates toward the junction while holding its lane. Overhead traffic lights span the intersection as vehicles bunch near the crosswalk.", "hazard_reasoning": "There is a white pickup truck slowing in the ego lane because of the truck slowing ahead on the road. You should follow the vehicle ahead to maintain safe distance and avoid a rear-end collision."}
{"id": "train_02351", "split": "train", "clip_key": "2020-0213-143552_042780_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "042780"}, "frames": ["2020-0213-143552_042780_movie_t-3.jpg", "2020-0213-143552_042780_movie_t-2.jpg", "2020-0213-143552_042780_movie_t-1.jpg", "2020-0213-143552_042780_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane one-way road runs under an elevated expressway, the pavement dry and smooth with moderate flow. A white box truck directly ahead in the ego lane slows because of congestion ahead and effectively sets the ego vehicle's pace. A scooter slightly ahead to the left proceeds straight through the junction alongside the truck in the adjacent lane. A white van in the far-left lane near the ego vehicle moves slowly parallel without merging. The overhead traffic light shows green.", "hazard_reasoning": "There's a white truck slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adjust to the slower-moving traffic."}
{"id": "train_02352", "split": "train", "clip_key": "2020-0206-101736_009870_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "009870"}, "frames": ["2020-0206-101736_009870_movie_t-3.jpg", "2020-0206-101736_009870_movie_t-2.jpg", "2020-0206-101736_009870_movie_t-1.jpg", "2020-0206-101736_009870_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street with a single lane in each direction and no median runs past shops and railings; the pavement looks smooth and traffic is light. Ahead in the ego lane, a blue truck slows and pulls to the left curb to stop directly in front of the ego vehicle, constraining its pace as it occupies much of the narrow lane. The roadside railings and parked bicycles tighten the available space alongside the truck, leaving little shoulder room.", "hazard_reasoning": "There is a blue bus slowing down in the ego lane, because it is stopping on the left side of the ego lane, in front of the ego car. You should carefully manoeuvre around the bus to maintain safe following distance and avoid collision."}
{"id": "train_02353", "split": "train", "clip_key": "2020-0131-135401_066056_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "066056"}, "frames": ["2020-0131-135401_066056_movie_t-3.jpg", "2020-0131-135401_066056_movie_t-2.jpg", "2020-0131-135401_066056_movie_t-1.jpg", "2020-0131-135401_066056_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane per direction runs beside an elevated structure; the pavement is clean and a solid yellow center line divides flows, with moderate traffic beginning to move. A white van directly ahead in the ego lane pulls forward as the light ahead turns green, setting the pace. An oncoming white van to the right proceeds straight in its lane and passes without conflict. A short line of same-direction cars farther ahead under the flyover accelerates slowly away from the intersection, keeping speeds modest. Temporary barricades line the left shoulder next to the sidewalk but remain outside the lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02354", "split": "train", "clip_key": "titan_clip_178_000078_movie", "source": {"subset": "titan", "scenario": "clip_178", "frame": "000078"}, "frames": ["titan_clip_178_000078_movie_t-3.jpg", "titan_clip_178_000078_movie_t-2.jpg", "titan_clip_178_000078_movie_t-1.jpg", "titan_clip_178_000078_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with no centerline runs between buildings, the ego car keeping to the left on smooth pavement; traffic is light. In the middle of the road ahead, a pedestrian in black pants and a white shirt walks away from the ego car along the travel path, occupying the lane and constraining pace. Farther ahead on the left, a white van is stopped at the curb and protrudes slightly into the roadway, narrowing the passage. A second person stands at a building entrance on the right near the camera, remaining on the sidewalk.", "hazard_reasoning": "There is a pedestrian in the middle of the road, wearing black pants and a white shirt, walking away from the ego car. The pedestrian is crossing ahead in the travel lane and may step into your path, so slow down to maintain safety."}
{"id": "train_02355", "split": "train", "clip_key": "titan_clip_1047_000030_movie", "source": {"subset": "titan", "scenario": "clip_1047", "frame": "000030"}, "frames": ["titan_clip_1047_000030_movie_t-3.jpg", "titan_clip_1047_000030_movie_t-2.jpg", "titan_clip_1047_000030_movie_t-1.jpg", "titan_clip_1047_000030_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban backstreet with a narrow two-way carriageway lacks a centerline, the asphalt is dry and smooth, and traffic is light with the scene largely clear ahead. The road bends gently to the right between closely spaced buildings and narrow sidewalks. A small vehicle is far ahead in the same direction and continues away without influencing the ego vehicle's pace, and no oncoming traffic is visible. A blue sign with a left arrow stands on the left corner near the bend. Close building fronts at the intersection limit sight lines around the turn.", "hazard_reasoning": "No hazards detected in the scene; the road is clear and safe for travel."}
{"id": "train_02356", "split": "train", "clip_key": "2020-0218-103119_024370_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "024370"}, "frames": ["2020-0218-103119_024370_movie_t-3.jpg", "2020-0218-103119_024370_movie_t-2.jpg", "2020-0218-103119_024370_movie_t-1.jpg", "2020-0218-103119_024370_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with two lanes in the ego direction runs between tall buildings, with orange flexible posts forming a median to the right that separates oncoming traffic; the pavement is clean and traffic is light. A white box truck is stopped directly ahead in the ego lane, blocking the path and holding the ego car's pace, matching the note that a white truck is stopped in front in the ego lane. A pedestrian walks on the left sidewalk beside a small barricaded work area, remaining off the carriageway.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The stopped truck blocks your lane, so you must stop to avoid a collision."}
{"id": "train_02357", "split": "train", "clip_key": "2020-0207-101955_018127_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "018127"}, "frames": ["2020-0207-101955_018127_movie_t-3.jpg", "2020-0207-101955_018127_movie_t-2.jpg", "2020-0207-101955_018127_movie_t-1.jpg", "2020-0207-101955_018127_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban street with two same-direction lanes shows dry, slightly worn pavement and moderate, slowing traffic. A dark tarp-covered mini-truck ahead in the ego lane slows, matching a truck braking further ahead, which constrains the ego vehicle's pace. To the right, a large crane truck is stopped along the lane line and partly intrudes into the adjacent lane, reducing usable width and discouraging a lane change. Farther ahead in the right lane, a white van moves slowly past the obstruction, contributing to the gradual flow.", "hazard_reasoning": "There is a black truck slowing in the ego lane, away from the ego car, because of the truck slowing ahead. The slowing truck may require sudden braking, so the driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_02358", "split": "train", "clip_key": "titan_clip_584_000360_movie", "source": {"subset": "titan", "scenario": "clip_584", "frame": "000360"}, "frames": ["titan_clip_584_000360_movie_t-3.jpg", "titan_clip_584_000360_movie_t-2.jpg", "titan_clip_584_000360_movie_t-1.jpg", "titan_clip_584_000360_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one narrow lane each direction has smooth asphalt, no median, and light traffic. Ahead, a pedestrian wearing black pants and carrying a backpack is in the middle of the road, crossing from right to left across the ego vehicle's path. On the right in the oncoming lane, a black taxi is pulled over and stationary by the curb, slightly constricting the opposing side. Farther ahead near the left curb, a scooter moves in the same direction at low speed, potentially affecting the approach to the crossing. Parked vehicles line the edges, and no prominent signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying a backpack, who is in the middle of the road, crossing the street, from the right side of the road to the left. The vehicle should manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_02359", "split": "train", "clip_key": "2020-0203-154554_039051_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "039051"}, "frames": ["2020-0203-154554_039051_movie_t-3.jpg", "2020-0203-154554_039051_movie_t-2.jpg", "2020-0203-154554_039051_movie_t-1.jpg", "2020-0203-154554_039051_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene under an elevated structure shows a two-lane same-direction road with a concrete divider on the left and smooth pavement; traffic moves slowly but steadily. A white box truck is directly ahead in the ego lane and continues away, setting the pace. Slightly ahead to the right, a small white kei truck travels in the adjacent lane at similar speed near diagonal merge markings, so it may edge toward the ego lane. On the far right, a silver van stands stopped in a marked bay beside the lane, presenting a roadside obstruction. Tall columns from the viaduct intermittently narrow the sight lines along the route.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02360", "split": "train", "clip_key": "2020-0220-102630_019446_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "019446"}, "frames": ["2020-0220-102630_019446_movie_t-3.jpg", "2020-0220-102630_019446_movie_t-2.jpg", "2020-0220-102630_019446_movie_t-1.jpg", "2020-0220-102630_019446_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road without a center median runs between mid-rise buildings; the pavement is dry and intact, and same-direction traffic is heavy and slow. A white sedan directly ahead in the ego lane slows and closes the gap to the queue because traffic is congested ahead. To the right, a black kei van creeps forward in the adjacent lane alongside the ego vehicle, limiting room to merge. Farther ahead, a tall box truck remains nearly stopped at the head of the line, constraining overall pace.", "hazard_reasoning": "There's a white sedan slowing down, in front of the ego car, in the ego lane because there's traffic congestion ahead. The sedan's reduced speed due to congestion requires you to decelerate to maintain a safe following distance and prevent a collision."}
{"id": "train_02361", "split": "train", "clip_key": "2020-0129-105040_061950_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061950"}, "frames": ["2020-0129-105040_061950_movie_t-3.jpg", "2020-0129-105040_061950_movie_t-2.jpg", "2020-0129-105040_061950_movie_t-1.jpg", "2020-0129-105040_061950_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian ahead.", "environment_perception": "A narrow urban two-way street with one lane each way and no median runs past shops and homes; the pavement is smooth and the left edge is red painted, with light opposing traffic. Ahead, an oncoming silver car approaches near the center and slows through a tight space that reduces clearance for the ego vehicle. On the right edge just ahead, a small white truck stands at the curb and protrudes slightly into the oncoming lane, contributing to the pinch point. On the left edge by the fence, a pedestrian wearing a brown coat and carrying a handbag walks toward the ego car along the painted strip close to the lane.", "hazard_reasoning": "There is a pedestrian wearing a brown coat and carrying a handbag, walking on the left side of the road, toward the ego car. The pedestrian may step into the vehicle's path, so the driver should be cautious and ready to respond."}
{"id": "train_02362", "split": "train", "clip_key": "2020-0226-140503_011602_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "011602"}, "frames": ["2020-0226-140503_011602_movie_t-3.jpg", "2020-0226-140503_011602_movie_t-2.jpg", "2020-0226-140503_011602_movie_t-1.jpg", "2020-0226-140503_011602_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane road with two same-direction lanes and no physical median appears, the asphalt is in good condition and traffic is slow to moderate. A green van is stopped directly ahead in the ego lane, holding the ego vehicle. In the adjacent right lane ahead, a black SUV creeps forward through the intersection, moving slightly faster and passing the stopped van. A dark sedan runs alongside on the right, continuing straight in the adjacent lane and limiting any opportunity to change lanes. Buildings closely flank the roadway and there are no visible obstructions or work zones beyond the queued vehicles.", "hazard_reasoning": "There is a green van stopped in front of the ego car, in the ego lane. The van's sudden stop requires the driver to stop immediately to avoid a rear-end collision."}
{"id": "train_02363", "split": "train", "clip_key": "2020-0129-144857_026912_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "026912"}, "frames": ["2020-0129-144857_026912_movie_t-3.jpg", "2020-0129-144857_026912_movie_t-2.jpg", "2020-0129-144857_026912_movie_t-1.jpg", "2020-0129-144857_026912_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the merging van.", "environment_perception": "An urban multilane arterial runs under an elevated structure with curbs and a fence at the right edge; the pavement is smooth and traffic is light. Ahead and slightly to the left, a black van merges from the left lane into the ego lane and continues forward, briefly reducing the headway. Farther ahead, a dark car in the same direction travels steadily under the viaduct without changing lanes. In the distance, a box truck proceeds along the through lanes. Overhead lane-use signs show the left lane for left turns, the two center lanes for through travel, and the rightmost lane for right turns.", "hazard_reasoning": "There is a black van in front of the ego car, changing lanes from the left lane to the ego lane. The van's lane change could force the ego vehicle to adjust speed to avoid collision, so the driver should be cautious."}
{"id": "train_02364", "split": "train", "clip_key": "titan_clip_1387_000114_movie", "source": {"subset": "titan", "scenario": "clip_1387", "frame": "000114"}, "frames": ["titan_clip_1387_000114_movie_t-3.jpg", "titan_clip_1387_000114_movie_t-2.jpg", "titan_clip_1387_000114_movie_t-1.jpg", "titan_clip_1387_000114_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban side street with damp pavement approaches a small intersection, and traffic is light. Ahead, a silver SUV is stopped along the left side of the intersection, partially encroaching into the ego lane and remaining stationary. On the right at the corner, a woman walks from the sidewalk and starts crossing the mouth of the side street toward the left, potentially entering the ego vehicle's path. Two construction workers stand on the left curb beside the SUV, stationary and close to the roadway. Cones and a temporary sign mark a small work area along the right edge by the intersection, leaving a confined passage.", "hazard_reasoning": "There is a silver SUV stopped on the left side of the intersection. You should carefully manoeuvre to avoid a collision with the stationary vehicle."}
{"id": "train_02365", "split": "train", "clip_key": "titan_clip_1166_000270_movie", "source": {"subset": "titan", "scenario": "clip_1166", "frame": "000270"}, "frames": ["titan_clip_1166_000270_movie_t-3.jpg", "titan_clip_1166_000270_movie_t-2.jpg", "titan_clip_1166_000270_movie_t-1.jpg", "titan_clip_1166_000270_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A busy urban commercial street with trees appears as a two-way road with one lane per direction separated by a painted center line; the pavement is worn but intact and traffic flows slowly. Ahead in the ego lane, a silver SUV slows in front of the car and sets the pace. In the opposing lane to the right, an oncoming black sedan approaches steadily, maintaining its line and limiting available lateral room. Along the left curb, several white vans are stopped with a worker standing beside one, and more parked vehicles line both sides, slightly narrowing the corridor while remaining stationary.", "hazard_reasoning": "There is a silver SUV slowing in the ego lane, in front of the ego car. The SUV's deceleration requires you to reduce speed to maintain a safe following distance."}
{"id": "train_02366", "split": "train", "clip_key": "2020-0204-103442_022552_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "022552"}, "frames": ["2020-0204-103442_022552_movie_t-3.jpg", "2020-0204-103442_022552_movie_t-2.jpg", "2020-0204-103442_022552_movie_t-1.jpg", "2020-0204-103442_022552_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane intersection beneath an elevated roadway comes into view, with dry pavement and moderate traffic that is halted on the ego approach at a red signal. A white hatchback directly ahead in the ego lane is stopped at the stop line because the light is red, holding the ego vehicle's position. In the adjacent lane to the left, a white utility truck waits slightly ahead, also stationary at the light and parallel to the ego car. On the cross street to the right, a green box truck and other vehicles travel straight through the intersection, crossing ahead while our direction remains stopped. The overhead traffic signal for the ego lane shows red, and broad zebra crossings span the junction.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The ego-vehicle needs to stop to avoid colliding with the halted vehicle and comply with the red signal."}
{"id": "train_02367", "split": "train", "clip_key": "2020-0228-150133_004892_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "004892"}, "frames": ["2020-0228-150133_004892_movie_t-3.jpg", "2020-0228-150133_004892_movie_t-2.jpg", "2020-0228-150133_004892_movie_t-1.jpg", "2020-0228-150133_004892_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane in each direction has dry pavement, a left-side guardrail, and steady moderate flow. A white box truck directly ahead in the ego lane proceeds straight at a moderate pace, effectively setting the speed as traffic moves through a green light. In the opposite lane to the right, a small van approaches from ahead and passes by without drifting toward the ego path. Farther right, a larger oncoming truck travels close to the curb, narrowing its lane but staying clear of the center. Bicycle markings and sidewalk railings line the left edge.", "hazard_reasoning": "There is a white truck driving in the ego lane, in front of the ego car, because of green traffic lights. The truck will likely react first to any change in the signal, so following it closely helps you maintain safe spacing and respond promptly to any sudden stops."}
{"id": "train_02368", "split": "train", "clip_key": "titan_clip_225_000078_movie", "source": {"subset": "titan", "scenario": "clip_225", "frame": "000078"}, "frames": ["titan_clip_225_000078_movie_t-3.jpg", "titan_clip_225_000078_movie_t-2.jpg", "titan_clip_225_000078_movie_t-1.jpg", "titan_clip_225_000078_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around parked bike carts", "environment_perception": "An urban street with tall buildings and trees presents a single narrow lane with no median; the asphalt looks smooth with a manhole cover, and traffic is light as the scene approaches a small intersection with a zebra crossing. A cyclist ahead near the lane center pedals toward the crosswalk at low speed, occupying the ego path. Farther ahead, a small box truck in the same direction waits by the intersection and constrains the pace. A pedestrian from the left steps onto the crosswalk and begins to traverse, which may put them in the ego lane. There are green bike carts parked on the right side of the road in the ego lane, narrowing the available space, and additional bicycles and a white station wagon stand along the curbs.", "hazard_reasoning": "There are green bike carts parked on the right side of the road, in the ego lane. These parked carts obstruct the ego lane and the driver should manoeuvre around them to avoid a collision."}
{"id": "train_02369", "split": "train", "clip_key": "2020-0218-103119_048211_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "048211"}, "frames": ["2020-0218-103119_048211_movie_t-3.jpg", "2020-0218-103119_048211_movie_t-2.jpg", "2020-0218-103119_048211_movie_t-1.jpg", "2020-0218-103119_048211_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road with good pavement approaches a signalized intersection, with a painted median separating oncoming traffic; overall flow is moderate and slowing. A white box truck directly ahead in the ego lane slows to a stop for a red traffic light, constraining the ego car. To the right, a light-colored minivan in the adjacent same-direction lane moves ahead toward the intersection and passes the truck. To the left, a red hatchback alongside creeps forward in its lane, remaining parallel and not merging. The overhead signal facing the ego direction shows red, and vehicles on the far right travel in the oncoming lanes beyond the painted divider.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of a red traffic light ahead. Driver should stop to maintain safe distance as the truck ahead slows at the red light."}
{"id": "train_02370", "split": "train", "clip_key": "2020-0204-150838_073286_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "073286"}, "frames": ["2020-0204-150838_073286_movie_t-3.jpg", "2020-0204-150838_073286_movie_t-2.jpg", "2020-0204-150838_073286_movie_t-1.jpg", "2020-0204-150838_073286_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with two same-direction lanes and concrete side walls rises gently toward a crest; the pavement is dry and smooth, and traffic is light with the adjacent lane mostly clear. A large truck ahead in the ego lane continues straight uphill at a steady pace, effectively setting the ego vehicle's speed. Farther ahead in the same lane, a small car proceeds straight and slowly opens its gap from the truck. No signals, speed signs, or merge points are clearly visible, and no pedestrians or cyclists appear.", "hazard_reasoning": "No hazards detected; the road is clear and conditions are stable, so no immediate warning is required."}
{"id": "train_02371", "split": "train", "clip_key": "2020-0228-102841_002727_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "002727"}, "frames": ["2020-0228-102841_002727_movie_t-3.jpg", "2020-0228-102841_002727_movie_t-2.jpg", "2020-0228-102841_002727_movie_t-1.jpg", "2020-0228-102841_002727_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with a single shared lane and no median is visible; the pavement is worn but clear and traffic is light as the car approaches a low railway underpass signed 2.8 m. An oncoming cyclist wearing a face mask rides in the middle of the lane toward the ego vehicle, directly occupying its path. On the right edge beside a coned construction frontage, a pedestrian walks toward the camera along the curb, close to the travel way. Farther ahead near the underpass, another pedestrian walks away near the lane center, in line with the ego vehicle's path. Parked bicycles and shopfront clutter line both sides, tightening the roadway.", "hazard_reasoning": "There is a cyclist wearing a face mask, cycling in the middle of the lane, toward the ego car. The cyclist's position in the travel lane poses a collision risk at current speed, so the driver should slow down to maintain a safe following distance."}
{"id": "train_02372", "split": "train", "clip_key": "titan_clip_430_000054_movie", "source": {"subset": "titan", "scenario": "clip_430", "frame": "000054"}, "frames": ["titan_clip_430_000054_movie_t-3.jpg", "titan_clip_430_000054_movie_t-2.jpg", "titan_clip_430_000054_movie_t-1.jpg", "titan_clip_430_000054_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban two-way street with buildings close to the curb, smooth pavement, and light traffic is seen as the ego vehicle proceeds in the left lane; no oncoming vehicles are visible. On the left ahead, a pedestrian wearing a white jacket stands at the roadside waiting to cross and may step into the ego lane. Immediately ahead along the left curb, a blue flatbed truck is stopped with cargo, encroaching on the lane and constraining the ego vehicle's path. Farther ahead on the right, a white minivan is stationary at the curb or a driveway mouth, angled toward the street and potentially preparing to pull out.", "hazard_reasoning": "There is a pedestrian wearing a white jacket and standing on the left side of the road, because she is waiting to cross the street. Because she is waiting to cross, she could step into the lane unexpectedly, so the driver should be aware of her presence ahead."}
{"id": "train_02373", "split": "train", "clip_key": "titan_clip_1018_000468_movie", "source": {"subset": "titan", "scenario": "clip_1018", "frame": "000468"}, "frames": ["titan_clip_1018_000468_movie_t-3.jpg", "titan_clip_1018_000468_movie_t-2.jpg", "titan_clip_1018_000468_movie_t-1.jpg", "titan_clip_1018_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with one lane in each direction and no median is shown, the pavement smooth and traffic light as the vehicle proceeds straight. On the left edge ahead, a pedestrian in a black dress carrying a handbag walks away along the roadway because traffic cones block the sidewalk, moving close to the ego lane and constraining pace. No same-direction vehicle is immediately ahead. On the right, two trucks stand parked facing the camera along the curb on the oncoming side, narrowing that lane and reducing clearance near the center.", "hazard_reasoning": "There is a pedestrian wearing a black dress, carrying a handbag, and walking on the left side of the road, away from the ego car, because of traffic cones on the sidewalk. Slowing down will help you respond if the pedestrian unexpectedly enters the roadway due to the sidewalk obstruction."}
{"id": "train_02374", "split": "train", "clip_key": "2020-0226-101332_054252_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "054252"}, "frames": ["2020-0226-101332_054252_movie_t-3.jpg", "2020-0226-101332_054252_movie_t-2.jpg", "2020-0226-101332_054252_movie_t-1.jpg", "2020-0226-101332_054252_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to the turning vehicle", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection, with three through lanes and a separate right-turn lane, smooth pavement, and moderate, steady flow. The signals ahead display green for through traffic. A dark van directly ahead in the ego lane proceeds straight toward the junction and sets the ego car's pace. A white sedan slightly left ahead advances straight in its adjacent lane, remaining parallel without encroaching. In the middle of the intersection ahead, a black hatchback turns left across the front of the ego car, briefly occupying the potential ego path before clearing.", "hazard_reasoning": "There is a black hatchback turning left, in the middle of the intersection, in front of the ego-car. The turning vehicle may cross the ego-vehicle's path, requiring the driver to yield to avoid a collision under this situation."}
{"id": "train_02375", "split": "train", "clip_key": "titan_clip_1148_000534_movie", "source": {"subset": "titan", "scenario": "clip_1148", "frame": "000534"}, "frames": ["titan_clip_1148_000534_movie_t-3.jpg", "titan_clip_1148_000534_movie_t-2.jpg", "titan_clip_1148_000534_movie_t-1.jpg", "titan_clip_1148_000534_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking near the road", "environment_perception": "A narrow urban residential two-way road with edge lines but no center divider runs between close-set buildings, and the pavement looks smooth. Traffic is light with no vehicles ahead or oncoming. On the right side near the edge line, a pedestrian carrying an umbrella walks toward the ego car along the roadway, close to the travel lane and potentially entering its path. A roadside utility pole and fence tighten clearance on the right, and no notable signage is visible.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and walking on the right side of the road, towards the ego car. The driver should be aware that the pedestrian may step onto the road unexpectedly, especially while holding an umbrella that could limit visibility."}
{"id": "train_02376", "split": "train", "clip_key": "2020-0213-143552_054970_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "054970"}, "frames": ["2020-0213-143552_054970_movie_t-3.jpg", "2020-0213-143552_054970_movie_t-2.jpg", "2020-0213-143552_054970_movie_t-1.jpg", "2020-0213-143552_054970_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with a solid center line and smooth pavement approaches a signalized intersection, with guardrails and a curb median; traffic is light. A white box truck directly ahead in the ego lane is stopped because the overhead signal is red, holding the ego vehicle. A small white cab-over truck waits in a narrow lane along the left curb beside the ego lane, also stopped at the light and not entering the ego path. Beyond the median to the right near the junction, a few vehicles move laterally under the elevated structure as cross traffic.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of a red traffic light. You should stop to maintain a safe distance and avoid a rear-end collision with the halted vehicle."}
{"id": "train_02377", "split": "train", "clip_key": "titan_clip_896_000552_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_896_000552_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_896_000552_movie_t-3_augB1.jpg", "titan_clip_896_000552_movie_t-2_augB1.jpg", "titan_clip_896_000552_movie_t-1_augB1.jpg", "titan_clip_896_000552_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "An urban shopping street with a narrow two-way undivided roadway curves slightly ahead; the pavement is smooth and traffic is light. A pedestrian wearing a black T-shirt and black pants crosses in front of the ego vehicle from left to right, moving briskly through the lane and directly blocking its path. An oncoming white van waits near the middle of the street ahead, inching forward amid foot traffic and further limiting space. Several other pedestrians cluster on both sidewalks to the left and right, some edging toward the curb as if preparing to cross and potentially entering the ego lane. Bollards line the right sidewalk and there is no marked crosswalk at this point, so people cross mid-block.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and black pants, crossing the street in front of the ego car, from the left side to the right side. The driver should yield because the pedestrian is directly in the vehicle's path and has the right of way."}
{"id": "train_02378", "split": "train", "clip_key": "2020-0220-151845_021685_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "021685"}, "frames": ["2020-0220-151845_021685_movie_t-3.jpg", "2020-0220-151845_021685_movie_t-2.jpg", "2020-0220-151845_021685_movie_t-1.jpg", "2020-0220-151845_021685_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A dense urban divided arterial with three same-direction lanes runs between high-rise buildings, separated from oncoming traffic by a low hedge median; the pavement is smooth and traffic is heavy with stop-and-go flow. A gray hatchback directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle in place. To the left, a queue of cars and vans alongside the ego lane is stopped or creeping forward, limiting any opportunity to merge. Farther ahead in the same lane, a large bus sits in the jam, contributing to the blockage.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car because of traffic congestion ahead. The driver should stop to avoid a collision with the stationary vehicle."}
{"id": "train_02379", "split": "train", "clip_key": "2020-0228-102841_080322_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "080322"}, "frames": ["2020-0228-102841_080322_movie_t-3.jpg", "2020-0228-102841_080322_movie_t-2.jpg", "2020-0228-102841_080322_movie_t-1.jpg", "2020-0228-102841_080322_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with three same-direction lanes and a right-side guardrail runs between tall buildings; the pavement is smooth and traffic is heavy with slow-moving queues ahead. Ahead in the ego lane, a black motorcycle slows because of the congestion and it directly constrains the ego-vehicle's pace. To the right, a red sports car in the adjacent lane is stopped near the curbside fence just ahead. On the left, a line of white trucks in the neighboring lane creeps forward toward the jam, limiting opportunities to merge.", "hazard_reasoning": "The black motorcycle is slowing in front of the ego car in the ego lane because of the traffic congestion ahead. The driver should slow down to match the reduced speed and maintain a safe following distance."}
{"id": "train_02380", "split": "train", "clip_key": "2020-0210-101957_039303_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "039303"}, "frames": ["2020-0210-101957_039303_movie_t-3.jpg", "2020-0210-101957_039303_movie_t-2.jpg", "2020-0210-101957_039303_movie_t-1.jpg", "2020-0210-101957_039303_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with the stopped vehicle.", "environment_perception": "An urban two-way arterial with dry, well-marked pavement and no physical median approaches a signalized intersection; traffic is light and currently stopped. The ego direction has two through lanes plus a right-turn lane. A black hatchback directly ahead in the ego lane is stopped at the stop line for the red signal, holding the ego vehicle. A light-blue small truck waits slightly ahead in the left adjacent lane, also stopped for the light and parallel to the ego path. On the far side, a few oncoming vehicles queue beyond the crosswalk in their lanes. The overhead traffic lights facing the ego show red.", "hazard_reasoning": "A black hatchback is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop promptly to maintain a safe distance and avoid colliding with the halted vehicle."}
{"id": "train_02381", "split": "train", "clip_key": "2020-0226-140503_086497_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "086497"}, "frames": ["2020-0226-140503_086497_movie_t-3.jpg", "2020-0226-140503_086497_movie_t-2.jpg", "2020-0226-140503_086497_movie_t-1.jpg", "2020-0226-140503_086497_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A dense urban arterial with multiple lanes in each direction approaches a wide signalized intersection on smooth pavement, and traffic is heavy but creeping. The signal ahead shows green for the ego direction. A white hatchback directly ahead in the ego lane is stopped at the intersection waiting to turn right, holding the ego car. Oncoming cars in the opposite lanes proceed straight through the junction, limiting gaps for that right turn and prolonging the stop. In the adjacent left lane a large truck and a black van ahead continue forward through the intersection, showing that the through lanes keep moving while the ego lane is constrained by the turning vehicle.", "hazard_reasoning": "There is a white hatchback that has stopped in front of the ego car, in the ego lane, because it is waiting to turn right. The driver should stop promptly to avoid a rear-end collision with the stationary vehicle ahead."}
{"id": "train_02382", "split": "train", "clip_key": "titan_clip_719_000264_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_719_000264_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_719_000264_movie_t-3_augB1.jpg", "titan_clip_719_000264_movie_t-2_augB1.jpg", "titan_clip_719_000264_movie_t-1_augB1.jpg", "titan_clip_719_000264_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban back street with a single narrow two-way lane runs between low shops, with no center divider and smooth pavement; traffic is light and there are no moving vehicles nearby. Ahead in the lane, a pedestrian carrying an umbrella and a handbag crosses mid-block from the right to the left, entering the ego path and prompting a brief slowdown. Farther ahead along the left edge, another pedestrian walks away in the same direction close to the curb and may drift into the lane. Utility poles and storefront steps stand close to the roadway, reducing lateral clearance.", "hazard_reasoning": "A pedestrian carrying an umbrella and a handbag crosses the street in the middle of the road, from the right to the left side of the road in a narrow lane. You should stop to avoid a collision with the crossing pedestrian."}
{"id": "train_02383", "split": "train", "clip_key": "titan_clip_1152_000348_movie", "source": {"subset": "titan", "scenario": "clip_1152", "frame": "000348"}, "frames": ["titan_clip_1152_000348_movie_t-3.jpg", "titan_clip_1152_000348_movie_t-2.jpg", "titan_clip_1152_000348_movie_t-1.jpg", "titan_clip_1152_000348_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban back street with a single narrow undivided lane is paved with interlocking bricks, and traffic is light with no moving vehicles ahead. A white box truck is stopped on the right with its rear doors open as it is being unloaded, encroaching into the lane and constricting the passage. A worker beside the truck handles boxes at the edge of the roadway and stands in the travel path. Farther ahead, a pedestrian walks along the middle of the street away from the camera. Bicycles, orange cones, and stacks of boxes line the right edge, further narrowing the way.", "hazard_reasoning": "There is a white truck parked on the right side of the road, because it is being unloaded. The parked truck narrows the roadway, so drivers must manoeuvre carefully around it to maintain safe clearance."}
{"id": "train_02384", "split": "train", "clip_key": "2020-0129-105040_060354_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "060354"}, "frames": ["2020-0129-105040_060354_movie_t-3.jpg", "2020-0129-105040_060354_movie_t-2.jpg", "2020-0129-105040_060354_movie_t-1.jpg", "2020-0129-105040_060354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with buildings tight to the curb runs in both directions with no median; the asphalt is smooth with red shoulder strips, and traffic is light. A white car proceeds far ahead in the ego lane at a steady pace without constraining movement. A pedestrian wearing a black dress walks along the left side away from the ego car, staying near the curb and parallel to the lane. No oncoming vehicles are visible. Parked bicycles and scooters line both sides, and orange cones with roadside materials cluster at the right curb, slightly narrowing the available space.", "hazard_reasoning": "There is a pedestrian wearing a black dress and walking on the left side of the road, away from the ego-car. The pedestrian could change direction or step into the lane unexpectedly, so the driver should reduce speed in this situation."}
{"id": "train_02385", "split": "train", "clip_key": "2020-0210-155354_010525_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "010525"}, "frames": ["2020-0210-155354_010525_movie_t-3.jpg", "2020-0210-155354_010525_movie_t-2.jpg", "2020-0210-155354_010525_movie_t-1.jpg", "2020-0210-155354_010525_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban commercial intersection appears on a two-way road with one lane per direction separated by metal railings; the pavement is dry and traffic is moderate. In the middle of the junction, a silver hatchback turns right into the side street on the ego vehicle's right, briefly crossing and then clearing the ego lane. At the near left, a dark compact car from the opposing approach edges forward toward the stop line, facing the ego lane but waiting. Farther ahead in the ego lane, a large truck proceeds straight away from the camera, setting the pace for our direction. Pedestrians stand at the right corner by the crosswalk, and the pedestrian signal shows a walk icon.", "hazard_reasoning": "There is a silver hatchback turning into the right lane, in the middle of the intersection. Because it is merging across the ego-vehicle's path, you should yield to avoid a potential collision."}
{"id": "train_02386", "split": "train", "clip_key": "2020-0213-143552_088333_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "088333"}, "frames": ["2020-0213-143552_088333_movie_t-3.jpg", "2020-0213-143552_088333_movie_t-2.jpg", "2020-0213-143552_088333_movie_t-1.jpg", "2020-0213-143552_088333_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway approach runs under an elevated viaduct with a sound barrier on the right, dry pavement, and heavy slow-moving same-direction traffic in multiple lanes. A white dump truck directly ahead in the ego lane accelerates slightly and pulls away as traffic ahead clears, opening a small gap. To the left, a large box truck creeps forward alongside and remains close, limiting the ego vehicle's lateral space and view. Farther ahead in the left lane, another tall truck inches along and intermittently stops, contributing to the queue. A narrow shoulder hugs the right wall with scattered roadside debris, and there is no visible oncoming traffic or relevant signage.", "hazard_reasoning": "There is a white truck driving away from the ego car, in the ego lane, because traffic ahead is clearing. As the traffic queue dissolves and the leading vehicle accelerates, you should start moving to match the flow and avoid being caught off guard by moving traffic."}
{"id": "train_02387", "split": "train", "clip_key": "2020-0225-102455_009419_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_009419_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_009419_movie_t-3_augB1.jpg", "2020-0225-102455_009419_movie_t-2_augB1.jpg", "2020-0225-102455_009419_movie_t-1_augB1.jpg", "2020-0225-102455_009419_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban two-way street with one lane per direction and a double white painted median passes between mid-rise buildings; the pavement is dry and smooth, and traffic is moderate with brief slowdowns. A gray dump truck directly ahead in the ego lane slows because of congestion ahead and sets the ego car's pace. To the right, an oncoming white van proceeds straight in its opposite lane, remaining separated by the median. Along the left curb farther ahead, a silver car and a darker taxi wait at the roadside, narrowing edge space but staying outside the travel lane. A large 50 marking on the roadway indicates the posted speed for this section.", "hazard_reasoning": "There's a gray truck slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance due to reduced speeds and potential sudden stops in the congested traffic ahead."}
{"id": "train_02388", "split": "train", "clip_key": "titan_clip_863_000108_movie", "source": {"subset": "titan", "scenario": "clip_863", "frame": "000108"}, "frames": ["titan_clip_863_000108_movie_t-3.jpg", "titan_clip_863_000108_movie_t-2.jpg", "titan_clip_863_000108_movie_t-1.jpg", "titan_clip_863_000108_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the parked motorcycle", "environment_perception": "An urban commercial street with a narrow two-way roadway and no median curves gently right; the pavement looks smooth and traffic is light with no close oncoming vehicles. Ahead in the same-direction lane, a small silver van proceeds slowly toward the bend, setting the ego vehicle's pace. Farther ahead near the centerline, a pedestrian steps from the right side and begins crossing leftward, potentially entering the ego lane before the bend. On the left roadside by the shops, there is a black motorcycle parked with its top box open and a person crouching beside it, reducing the clearance along the curb.", "hazard_reasoning": "There is a black motorcycle parked on the left side of the road. The parked motorcycle narrows the available lane space and may obstruct the path, so the driver should manoeuvre carefully around it."}
{"id": "train_02389", "split": "train", "clip_key": "titan_clip_1179_000150_movie", "source": {"subset": "titan", "scenario": "clip_1179", "frame": "000150"}, "frames": ["titan_clip_1179_000150_movie_t-3.jpg", "titan_clip_1179_000150_movie_t-2.jpg", "titan_clip_1179_000150_movie_t-1.jpg", "titan_clip_1179_000150_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "A narrow two-way urban street with shops lines the scene, the pavement dry and smooth, and overall traffic light. Ahead in the ego lane along the left curb, a silver truck is parked for unloading, occupying the lane, and a worker stands at its rear near the storefront. From ahead-right, a black taxi approaches in the opposing lane and continues past the truck, limiting any chance for the ego vehicle to go around. A pedestrian walks on the left sidewalk by the shop entrance, remaining clear of the roadway. An orange cone sits near the curb, and the truck creates a localized bottleneck.", "hazard_reasoning": "There is a silver truck parked on the left side of the road, in the ego lane because it is being unloaded. This parked truck reduces the available lane width and partially blocks the driver's view, so the driver should manoeuvre carefully around it to avoid collision."}
{"id": "train_02390", "split": "train", "clip_key": "2020-0226-140503_036336_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "036336"}, "frames": ["2020-0226-140503_036336_movie_t-3.jpg", "2020-0226-140503_036336_movie_t-2.jpg", "2020-0226-140503_036336_movie_t-1.jpg", "2020-0226-140503_036336_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with one lane in the ego direction is divided from several oncoming lanes by a narrow guardrail median; the pavement is dry and traffic is light ahead but moderate oncoming. A black van ahead in the ego lane drives away from the ego car, gradually opening the gap along our path. To the right, a stream of oncoming cars and a silver box truck proceeds past behind the median and does not affect the ego lane. On the left sidewalk, a pedestrian walks parallel to the road near the crosswalk without approaching the carriageway. A 50 marking is visible on the roadway.", "hazard_reasoning": "There is a black van driving away from the ego car in the ego lane. Because the van is directly ahead in your lane, it may brake unexpectedly, so you should maintain a safe following distance and be prepared to react, which aligns with the instruction to follow the vehicle ahead."}
{"id": "train_02391", "split": "train", "clip_key": "titan_clip_1165_000570_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1165_000570_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1165_000570_movie_t-3_augB1.jpg", "titan_clip_1165_000570_movie_t-2_augB1.jpg", "titan_clip_1165_000570_movie_t-1_augB1.jpg", "titan_clip_1165_000570_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with no median runs between rows of parked vehicles on both curbs; the pavement looks smooth and moving traffic is light. The ego vehicle travels along the left side. Ahead, a pedestrian in a white shirt and skirt walks across to the right side of the road in front of the car, entering the ego path. Farther ahead in the same direction, a white car moves slowly down the center, modestly constraining the pace. Numerous parked vans and cars line both sides, tightening the lane and limiting sight lines near the crossing.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and a skirt, walking across to the right side of the road in front of the ego car. The pedestrian's movement into the vehicle's path requires the driver to reduce speed to avoid a possible collision, aligning with the need to slow down."}
{"id": "train_02392", "split": "train", "clip_key": "titan_clip_112_000432_movie", "source": {"subset": "titan", "scenario": "clip_112", "frame": "000432"}, "frames": ["titan_clip_112_000432_movie_t-3.jpg", "titan_clip_112_000432_movie_t-2.jpg", "titan_clip_112_000432_movie_t-1.jpg", "titan_clip_112_000432_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with brick paving and no centerline runs between tall buildings, the surface smooth and dry and traffic light. Ahead in the ego lane, a pedestrian in a white shirt walks in the middle of the road away from the camera to get around a parked van on the left, occupying the ego path. On the right edge near the curb, another pedestrian walks toward the camera while staying out of the lane. To the left beside the vending machines, a man walks away along the lane edge close to the van. A silver van parked on the left and several motorcycles parked on the right further narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking in the middle of the road, away from the ego car, because of the parked vehicle on the left. The driver should slow down to avoid a potential collision as the pedestrian is in the vehicle's path."}
{"id": "train_02393", "split": "train", "clip_key": "titan_clip_173_000102_movie", "source": {"subset": "titan", "scenario": "clip_173", "frame": "000102"}, "frames": ["titan_clip_173_000102_movie_t-3.jpg", "titan_clip_173_000102_movie_t-2.jpg", "titan_clip_173_000102_movie_t-1.jpg", "titan_clip_173_000102_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked truck", "environment_perception": "A narrow urban street with tall buildings and smooth pavement carries a single same-direction lane with a curbside parking bay on the left, and traffic is light. On the left foreground, a white van is parked in the bay near the ego lane. Farther ahead on the left, a white box truck is parked at the curb for unloading, and it slightly narrows the usable lane. Ahead in the same lane, a small car continues straight at low speed and loosely sets the pace.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. The parked truck may obstruct the lane and requires the driver to proceed with caution."}
{"id": "train_02394", "split": "train", "clip_key": "titan_clip_1157_000108_movie", "source": {"subset": "titan", "scenario": "clip_1157", "frame": "000108"}, "frames": ["titan_clip_1157_000108_movie_t-3.jpg", "titan_clip_1157_000108_movie_t-2.jpg", "titan_clip_1157_000108_movie_t-1.jpg", "titan_clip_1157_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one lane each direction and no median runs between midrise buildings; the asphalt looks smooth and slightly damp, and traffic is light as a curbside work zone narrows the left lane. Ahead on the left side of the road, a pedestrian in a blue shirt and hat faces the ego vehicle and signals while directing traffic, standing near the path where the car would pass. Farther ahead at the left curb, a construction truck is stopped beside barricades and signage, occupying part of the ego lane and limiting the available width. In the opposite lane, a white car approaches through the open gap past the work area, influencing when the ego vehicle can proceed. Cones and temporary barriers line the work zone.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and hat, standing on the left side of the road, facing the ego car, because they are directing traffic. As the pedestrian is actively directing vehicles in the construction zone, the driver should manoeuvre carefully to avoid any collision."}
{"id": "train_02395", "split": "train", "clip_key": "2020-0227-153144_045081_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "045081"}, "frames": ["2020-0227-153144_045081_movie_t-3.jpg", "2020-0227-153144_045081_movie_t-2.jpg", "2020-0227-153144_045081_movie_t-1.jpg", "2020-0227-153144_045081_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way street with no physical median and smooth pavement is seen, with same-direction traffic paused at an intersection. Flow is moderate but temporarily halted by the signal. A white van directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. A red hatchback in the adjacent left lane is also stopped slightly forward, waiting for the same light. Several pedestrians cross the zebra crossing from right to left in front of the stopped vehicles, and an oncoming stream on the right proceeds beyond the intersection. The overhead traffic light shows red.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The driver must stop to avoid rear-ending the van and to comply with the traffic signal under this scenario."}
{"id": "train_02396", "split": "train", "clip_key": "titan_clip_1025_000276_movie", "source": {"subset": "titan", "scenario": "clip_1025", "frame": "000276"}, "frames": ["titan_clip_1025_000276_movie_t-3.jpg", "titan_clip_1025_000276_movie_t-2.jpg", "titan_clip_1025_000276_movie_t-1.jpg", "titan_clip_1025_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban backstreet with a narrow two-way road lacking a centerline runs between buildings; the pavement is smooth and there is no vehicular traffic, so overall flow is light as the ego vehicle proceeds along the left side. Ahead on the right, a pedestrian carrying an umbrella and handbag walks away along the edge of the roadway, occupying part of the lane and constraining the ego's pace. Slightly farther ahead, another person with an umbrella also walks away on the right side in the same direction. No signals or notable signs are visible, and there are no parked vehicles or obstacles in the lane.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and handbag, walking on the right side of the road, away from the ego car. The driver should manoeuvre carefully around this pedestrian to maintain safe clearance and prevent a possible collision."}
{"id": "train_02397", "split": "train", "clip_key": "2020-0204-150838_056441_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "056441"}, "frames": ["2020-0204-150838_056441_movie_t-3.jpg", "2020-0204-150838_056441_movie_t-2.jpg", "2020-0204-150838_056441_movie_t-1.jpg", "2020-0204-150838_056441_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An elevated urban expressway in a dense urban setting curves right beneath stacked flyovers, with three same-direction lanes, concrete barriers on both sides, smooth pavement, and light to moderate flow. Ahead in the ego lane, a gray coach bus slows, constraining the ego vehicle's pace. Farther ahead in the adjacent right lane, a small white van continues steadily without indicating a merge. No salient traffic signals or signs are visible.", "hazard_reasoning": "There is a gray bus, slowing, in front of the ego car, in the ego lane. The bus is decelerating directly ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_02398", "split": "train", "clip_key": "2020-0131-135401_009464_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "009464"}, "frames": ["2020-0131-135401_009464_movie_t-3.jpg", "2020-0131-135401_009464_movie_t-2.jpg", "2020-0131-135401_009464_movie_t-1.jpg", "2020-0131-135401_009464_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the truck", "environment_perception": "A narrow urban two-way street with a single lane each way and a solid orange centerline runs between close buildings, the pavement is smooth, and traffic is light and momentarily halted at a signalized intersection. A white box truck directly ahead in the ego lane is stopped for a red light, holding the ego vehicle behind. A white minivan on the cross street to the right moves through the intersection from right to left. A pedestrian on the left sidewalk walks along the curb and stays off the roadway. The traffic signal ahead is red.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, because of a red traffic light. The truck is halted by a red signal, so the driver must stop to avoid rear-ending it."}
{"id": "train_02399", "split": "train", "clip_key": "titan_clip_1392_000402_movie", "source": {"subset": "titan", "scenario": "clip_1392", "frame": "000402"}, "frames": ["titan_clip_1392_000402_movie_t-3.jpg", "titan_clip_1392_000402_movie_t-2.jpg", "titan_clip_1392_000402_movie_t-1.jpg", "titan_clip_1392_000402_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban side street with a single lane and smooth asphalt runs between tall buildings, and traffic is very light with no moving vehicles seen. A black sedan is parked along the right curb in a marked bay just ahead, narrowing the usable lane. On the left sidewalk close to the camera, a woman walks toward the intersection while remaining on the pavement. Ahead on the right sidewalk, a man walks past the building frontage without approaching the lane. A blue one-way arrow sign at the corner indicates the roadway continues to the right, and metal railings guard the curb.", "hazard_reasoning": "There is a black sedan parked on the left side of the lane. This parked vehicle reduces the available lane width and may obstruct the vehicle's path, so the driver should manoeuvre carefully around it."}
{"id": "train_02400", "split": "train", "clip_key": "titan_clip_332_000360_movie", "source": {"subset": "titan", "scenario": "clip_332", "frame": "000360"}, "frames": ["titan_clip_332_000360_movie_t-3.jpg", "titan_clip_332_000360_movie_t-2.jpg", "titan_clip_332_000360_movie_t-1.jpg", "titan_clip_332_000360_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for crossing pedestrians", "environment_perception": "An urban shopping street with a narrow single-lane shared roadway is paved with interlocking bricks, lacks a divider, and shows very light vehicle flow amid heavy foot traffic as the ego vehicle creeps forward. Ahead in the lane, two pedestrians wearing a black shirt and a blue shirt cross from the left to the right, moving into the vehicle's path and constraining its pace. Slightly farther ahead, a person in white walks diagonally across toward the right, continuing to pass in front of the car. On the right edge near the storefronts, a pedestrian approaches toward the camera along the curb, staying at the side as the vehicle passes. A blue directional sign and a red circular prohibition sign are visible on a pole at the left.", "hazard_reasoning": "There are two pedestrians wearing a black shirt and blue shirt, crossing from the left to the right side of the road. The driver must stop to avoid a collision with the crossing pedestrians."}
{"id": "train_02401", "split": "train", "clip_key": "titan_clip_689_000408_movie", "source": {"subset": "titan", "scenario": "clip_689", "frame": "000408"}, "frames": ["titan_clip_689_000408_movie_t-3.jpg", "titan_clip_689_000408_movie_t-2.jpg", "titan_clip_689_000408_movie_t-1.jpg", "titan_clip_689_000408_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way roadway has no median and dry pavement, and vehicular traffic is very light. The ego vehicle proceeds slowly along the left side as pedestrians occupy the street. Ahead in the middle of the lane, a pedestrian carrying a backpack and wearing black pants walks away from the car, occupying the center of the road and directly in the ego path. Along the right edge near storefronts, a woman walks forward beside menu boards, close to the travel lane. On the left, another person steps from a shop area toward the curb, moving toward the lane. Farther ahead, a small group of pedestrians continues along the street, with a few crossing the corridor. Restaurant signboards and parked bicycles narrow the margins, and no signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian carrying a backpack, wearing black pants, walking in the middle of the road, away from the ego car. The pedestrian's position in the center of the roadway poses a collision risk, so the driver should slow down to maintain safety."}
{"id": "train_02402", "split": "train", "clip_key": "titan_clip_91_000054_movie", "source": {"subset": "titan", "scenario": "clip_91", "frame": "000054"}, "frames": ["titan_clip_91_000054_movie_t-3.jpg", "titan_clip_91_000054_movie_t-2.jpg", "titan_clip_91_000054_movie_t-1.jpg", "titan_clip_91_000054_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban commercial side street with a single narrow shared lane and brick paving is shown, with no median and light traffic. The flow is slow, and the lane is partially constrained by curbside fixtures. On the right edge near storefronts, a pedestrian wearing blue pants and carrying a handbag walks toward the ego vehicle along the roadway, approaching its path and reducing clearance. Ahead on the left, a white van is stopped or parked at the curb, slightly protruding into the lane and creating a pinch point. Farther ahead on the left, two pedestrians stand near the curb by shops and move sporadically, potentially entering the travel space. No traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing blue pants and carrying a handbag walking on the right side of the road toward the ego-vehicle. The driver should manoeuvre carefully around the pedestrian to maintain safe clearance and avoid collision."}
{"id": "train_02403", "split": "train", "clip_key": "2020-0205-152530_057885_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "057885"}, "frames": ["2020-0205-152530_057885_movie_t-3.jpg", "2020-0205-152530_057885_movie_t-2.jpg", "2020-0205-152530_057885_movie_t-1.jpg", "2020-0205-152530_057885_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road beneath complex elevated expressways climbs gently, with a right-side barrier separating a rising ramp and smooth pavement; traffic is light. A black truck ahead in the ego lane drives away from the ego car, keeping a clear gap and leading the lane. Two large trucks are stopped in a pull-off area on the left shoulder, remaining stationary beside the travel lane. Farther ahead, another flatbed continues straight in the same direction with ample distance. No traffic signals or notable signs are clearly visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02404", "split": "train", "clip_key": "2020-0129-105040_060764_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-105040_060764_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-105040_060764_movie_t-3_augB1.jpg", "2020-0129-105040_060764_movie_t-2_augB1.jpg", "2020-0129-105040_060764_movie_t-1_augB1.jpg", "2020-0129-105040_060764_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban shopping street with one lane each way and red-painted shoulders shows smooth pavement and light flow as the ego vehicle approaches a zebra crossing. A cyclist in a white shirt and black pants rides toward the ego car along the right side in the oncoming lane, tracking near the center and likely to pass close to the ego vehicle. Ahead on the right, a small van stands at the curb beside a person on a ladder, narrowing the opposing lane and constraining space for the cyclist and any oncoming traffic. Several pedestrians walk along both sidewalks near storefronts, moving parallel to traffic and not stepping into the road.", "hazard_reasoning": "There is a cyclist wearing a white shirt and black pants, cycling on the right side of the road, towards the ego car. The cyclist's path converges with the vehicle's lane, so the driver should carefully manoeuvre to avoid a collision while maintaining control."}
{"id": "train_02405", "split": "train", "clip_key": "2020-0203-154554_023916_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "023916"}, "frames": ["2020-0203-154554_023916_movie_t-3.jpg", "2020-0203-154554_023916_movie_t-2.jpg", "2020-0203-154554_023916_movie_t-1.jpg", "2020-0203-154554_023916_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial has three lanes in the ego direction with a low hedge median on the right; the pavement looks good and traffic is heavy, bunching at an intersection. Directly ahead in the ego lane, a black sedan is stopped, held by a red traffic light, and blocks the ego vehicle. In the left adjacent lane, a white wagon slightly ahead is also stopped in the queue, limiting lateral movement. Farther ahead, a white bus waits at the intersection in the same direction, setting the front of the line. Beyond the hedge to the right, oncoming cars pass through the junction, clearly separated from the ego path.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe distance and comply with the signal to avoid a rear-end collision."}
{"id": "train_02406", "split": "train", "clip_key": "2020-0210-142719_004949_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "004949"}, "frames": ["2020-0210-142719_004949_movie_t-3.jpg", "2020-0210-142719_004949_movie_t-2.jpg", "2020-0210-142719_004949_movie_t-1.jpg", "2020-0210-142719_004949_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the slowing motorcycle ahead", "environment_perception": "An urban two-way intersection with narrow lanes and no median comes into view; the pavement is smooth and overall traffic is light. On the cross street to the right, a white hatchback proceeds away along the near curb, posing little constraint to the ego vehicle. At the near-right corner, two cyclists wait stationary by the guardrail next to the crosswalk, and they may roll into the crossing as the vehicle moves through. Several pedestrians cluster on the near-left sidewalk at the crosswalk, some edging toward the curb.", "hazard_reasoning": "There is a black motorcycle oncoming in the right traffic lane, slowing as it approaches the intersection where the ego-car is making a right-hand turn. The driver should be aware of the slowing motorcycle ahead to avoid cutting it off and risking a collision."}
{"id": "train_02407", "split": "train", "clip_key": "2020-0205-103411_109878_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "109878"}, "frames": ["2020-0205-103411_109878_movie_t-3.jpg", "2020-0205-103411_109878_movie_t-2.jpg", "2020-0205-103411_109878_movie_t-1.jpg", "2020-0205-103411_109878_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three lanes in each direction and no median barrier runs straight on smooth asphalt, with moderate, steady traffic. Ahead in the ego lane, a white van slows to a stop, constraining the ego car's pace. In the lane to the left, a white hatchback travels slightly ahead and continues straight without interacting. On the opposite side to the right, an oncoming small truck proceeds in its lane and remains separated. Overhead blue guide signs and a pedestrian overpass span the roadway.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to avoid rear-ending the stationary van at the red light."}
{"id": "train_02408", "split": "train", "clip_key": "titan_clip_591_000354_movie", "source": {"subset": "titan", "scenario": "clip_591", "frame": "000354"}, "frames": ["titan_clip_591_000354_movie_t-3.jpg", "titan_clip_591_000354_movie_t-2.jpg", "titan_clip_591_000354_movie_t-1.jpg", "titan_clip_591_000354_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with no median and smooth pavement approaches a small intersection where the main line bends right; traffic is light with no moving motor vehicles ahead or oncoming. A cyclist in a green shirt pulling a green cart is ahead, moving from the left shoulder into the middle of the road and crossing toward the right, briefly occupying the ego lane. Two pedestrians are ahead on the left, walking away and partly in the lane, with one edging toward the center near the cyclist and constraining pace. A white van stands at the curb on the right. A building on the right is under construction with cones and barriers along the curbside.", "hazard_reasoning": "There is a cyclist wearing a green shirt, pulling a green cart, cycling in the middle of the road, from the left side to the right side. The cyclist is moving across your lane and may enter your path, so you should slow down to maintain a safe distance."}
{"id": "train_02409", "split": "train", "clip_key": "2020-0217-110854_022249_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "022249"}, "frames": ["2020-0217-110854_022249_movie_t-3.jpg", "2020-0217-110854_022249_movie_t-2.jpg", "2020-0217-110854_022249_movie_t-1.jpg", "2020-0217-110854_022249_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with painted lane dividers runs between tall buildings; the pavement appears dry and traffic is queued at an intersection. An orange-and-white bus is stopped directly ahead in the ego lane, constraining the ego vehicle's movement. In the adjacent right lane, an orange sports car edges forward and passes the stopped bus, continuing without entering the ego lane. To the left, a silver van in the neighboring lane waits alongside at low speed, matching the queue. Overhead traffic lights show red, and a roadside sign on the right indicates no stopping.", "hazard_reasoning": "There is an orange bus stopped in the ego lane, in front of the ego car. The bus is blocking your path and you must stop immediately to avoid a rear-end collision."}
{"id": "train_02410", "split": "train", "clip_key": "titan_clip_790_000354_movie", "source": {"subset": "titan", "scenario": "clip_790", "frame": "000354"}, "frames": ["titan_clip_790_000354_movie_t-3.jpg", "titan_clip_790_000354_movie_t-2.jpg", "titan_clip_790_000354_movie_t-1.jpg", "titan_clip_790_000354_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of nearby pedestrian", "environment_perception": "An urban two-way street with one lane in each direction curves gently right, with smooth pavement, no median, and sidewalks separated by bollards; traffic is light with no vehicles visible. On the left sidewalk near the camera, a pedestrian wearing all black stands close to the curb by the roadway and could enter the ego lane. Farther ahead on the right sidewalk near the bend, two pedestrians walk away along the shops and stay clear of the road. The rightward curve between buildings creates a partial blind bend but no obstacles appear in the lane.", "hazard_reasoning": "There is a pedestrian wearing all black, standing on the left sidewalk but close to the road. The pedestrian stands close to the roadway and could enter the lane unexpectedly; be aware of nearby pedestrian."}
{"id": "train_02411", "split": "train", "clip_key": "2020-0205-103411_110370_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "110370"}, "frames": ["2020-0205-103411_110370_movie_t-3.jpg", "2020-0205-103411_110370_movie_t-2.jpg", "2020-0205-103411_110370_movie_t-1.jpg", "2020-0205-103411_110370_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with no visible median and dry asphalt appears, and traffic is heavy and queued at a signalized intersection. A white van directly ahead in the ego lane is stopped for a red light and blocks the ego car's path. To the left, a black minivan slightly ahead slows within its lane as the queue forms, constraining lateral options. In the right lane, another white van waits a little farther forward at the same stop. Overhead signal heads show red beneath a pedestrian overpass, and a large direction sign spans the roadway.", "hazard_reasoning": "There is a white van stopped in front of the ego-car, in the ego lane, because of a red traffic light ahead. The driver should stop immediately to comply with the red signal and avoid colliding with the halted vehicle ahead."}
{"id": "train_02412", "split": "train", "clip_key": "titan_clip_128_000612_movie", "source": {"subset": "titan", "scenario": "clip_128", "frame": "000612"}, "frames": ["titan_clip_128_000612_movie_t-3.jpg", "titan_clip_128_000612_movie_t-2.jpg", "titan_clip_128_000612_movie_t-1.jpg", "titan_clip_128_000612_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield for crossing pedestrian ahead", "environment_perception": "An urban commercial street with two-way traffic and no median, the ego vehicle proceeds in the left lane toward a zebra crosswalk; pavement is smooth and traffic is light. Ahead to the left, a pedestrian wearing a black shirt and backpack crosses at the crosswalk toward the right, moving across the ego lane. On the near-right sidewalk by the shop entrance, several pedestrians stand under umbrellas at the corner, waiting at the crosswalk without entering the roadway. A brown sedan is stopped at the right curb by the crosswalk with its nose near the lane, reducing clearance. Beyond the crosswalk, several cars are parked along the left curb.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a backpack, and crossing the street, to the left side, ahead at the crosswalk. The driver should yield because the pedestrian is crossing ahead at the crosswalk, and failing to do so could result in a collision."}
{"id": "train_02413", "split": "train", "clip_key": "2020-0225-102455_016856_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "016856"}, "frames": ["2020-0225-102455_016856_movie_t-3.jpg", "2020-0225-102455_016856_movie_t-2.jpg", "2020-0225-102455_016856_movie_t-1.jpg", "2020-0225-102455_016856_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction runs between midrise buildings, divided by double solid white lines on dry, smooth pavement, and traffic is light to moderate. Ahead in the ego lane a white box truck slows, constraining the ego vehicle's pace. Farther ahead near the pedestrian overpass another larger truck continues in the same direction, keeping the flow slow. In the opposite lane an oncoming sedan approaches steadily and passes the trucks without deviating. At the right curb on the opposite side a dark car sits near the lane edge but remains stationary. A large 50 marking on the roadway indicates the posted speed along this stretch.", "hazard_reasoning": "There is a white truck slowing in the ego lane. The ego-vehicle may close in too quickly on the decelerating truck, so maintain a safe following distance aligning with the warning to slow down."}
{"id": "train_02414", "split": "train", "clip_key": "2020-0227-153144_018907_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "018907"}, "frames": ["2020-0227-153144_018907_movie_t-3.jpg", "2020-0227-153144_018907_movie_t-2.jpg", "2020-0227-153144_018907_movie_t-1.jpg", "2020-0227-153144_018907_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes runs between mid-rise buildings, divided from oncoming traffic by a grass strip with railings; the pavement is smooth and traffic is heavy, queuing at an intersection. Directly ahead in the ego lane a black sedan stands still at a red light, holding the ego car. In the adjacent left lane a black minivan slightly ahead slows to a stop alongside, limiting room to merge. Along the right edge near the median a motorcyclist filters forward beside the queue toward the junction. A traffic signal ahead shows red.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of a red traffic light. The driver should slow down to match the stopped vehicle's speed and maintain a safe following distance."}
{"id": "train_02415", "split": "train", "clip_key": "2020-0207-151349_025528_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "025528"}, "frames": ["2020-0207-151349_025528_movie_t-3.jpg", "2020-0207-151349_025528_movie_t-2.jpg", "2020-0207-151349_025528_movie_t-1.jpg", "2020-0207-151349_025528_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multilane arterial with smooth pavement runs between tall office buildings; the ego-vehicle travels in the leftmost same-direction lane with heavy traffic that is currently stopped. A white box truck is immediately ahead in the ego lane and stands still, blocking the path and setting the pace. To the right, a silver sedan in the adjacent lane is stopped alongside the truck, with another box truck further ahead in that lane also stationary, limiting any chance to pass. On the left sidewalk, pedestrians move behind a metal fence and remain separated from the roadway. Bright sun glare ahead reduces contrast, and no signals or speed signs are clearly visible.", "hazard_reasoning": "There is a white truck stopped in front of the ego car. The driver should stop immediately to avoid a rear-end collision caused by the truck's sudden halt and blind spot."}
{"id": "train_02416", "split": "train", "clip_key": "2020-0204-150838_056259_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "056259"}, "frames": ["2020-0204-150838_056259_movie_t-3.jpg", "2020-0204-150838_056259_movie_t-2.jpg", "2020-0204-150838_056259_movie_t-1.jpg", "2020-0204-150838_056259_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow", "environment_perception": "An elevated urban expressway with three same-direction lanes curves gently right beneath multi-level ramps; guardrails line dry pavement and traffic is light. A gray coach bus is directly ahead in the ego left lane and slows, constraining the ego vehicle's pace. To its right, a small white utility truck in the middle lane continues straight and gradually pulls ahead of the bus without merging. No traffic signals are visible on this expressway, and no obstacles or work zones appear.", "hazard_reasoning": "There is a gray bus slowing in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should slow down to maintain a safe distance as the bus decelerates for the red light."}
{"id": "train_02417", "split": "train", "clip_key": "2020-0207-101955_075985_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "075985"}, "frames": ["2020-0207-101955_075985_movie_t-3.jpg", "2020-0207-101955_075985_movie_t-2.jpg", "2020-0207-101955_075985_movie_t-1.jpg", "2020-0207-101955_075985_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban expressway segment runs in a trench with tall sound walls, narrowed to a single lane by temporary plastic barriers; the pavement is dry and intact, and traffic is momentarily halted. Directly ahead in the ego lane a blue flatbed truck with a crane is stopped because of traffic congestion ahead, blocking the path and dictating the ego vehicle's pace. No other vehicles are visible in this confined channel and there is no opposing traffic, with barriers closely flanking the lane.", "hazard_reasoning": "There is a blue truck stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. You must stop to avoid colliding with the halted truck."}
{"id": "train_02418", "split": "train", "clip_key": "titan_clip_979_000384_movie", "source": {"subset": "titan", "scenario": "clip_979", "frame": "000384"}, "frames": ["titan_clip_979_000384_movie_t-3.jpg", "titan_clip_979_000384_movie_t-2.jpg", "titan_clip_979_000384_movie_t-1.jpg", "titan_clip_979_000384_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban shopping street with a narrow undivided carriageway and no centerline shows dry pavement and very light vehicular traffic. A pair of pedestrians walk ahead near the middle of the lane in the ego path, moving away and limiting the pace. On the right edge, a pedestrian wearing a blue shirt and black shorts carrying a grocery bag walks toward the ego vehicle along the curb and may step into the lane. On the left side, another pedestrian moves along the curb near parked bicycles, close to the roadway but not entering. Storefronts line both sides and several bicycles are parked at the left, with no moving vehicles visible.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black shorts, carrying a grocery bag, and walking on the right side of the road, towards the ego car. The pedestrian may cross or veer into the lane, so the driver should manoeuvre to maintain a safe distance and avoid a collision."}
{"id": "train_02419", "split": "train", "clip_key": "2020-0210-155354_045076_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "045076"}, "frames": ["2020-0210-155354_045076_movie_t-3.jpg", "2020-0210-155354_045076_movie_t-2.jpg", "2020-0210-155354_045076_movie_t-1.jpg", "2020-0210-155354_045076_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction and a double solid center line appears smooth, and traffic is light to moderate. The ego vehicle proceeds in the right-side lane for its direction as a white sedan ahead is lane changing from the ego lane to the left lane, momentarily setting the pace while it moves over. Farther ahead in the left lane, another car continues straight at a steady speed without affecting the ego path. In the opposing lanes to the right, a white van and other oncoming vehicles pass steadily, well separated by the center lines. A roadside construction area with cement trucks sits on the far right behind barriers.", "hazard_reasoning": "There is a white sedan lane changing from the ego lane to the left lane. The merging vehicle may cut into the ego lane unexpectedly, so the driver should slow down to maintain a safe distance."}
{"id": "train_02420", "split": "train", "clip_key": "titan_clip_1054_000036_movie", "source": {"subset": "titan", "scenario": "clip_1054", "frame": "000036"}, "frames": ["titan_clip_1054_000036_movie_t-3.jpg", "titan_clip_1054_000036_movie_t-2.jpg", "titan_clip_1054_000036_movie_t-1.jpg", "titan_clip_1054_000036_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with a single lane each direction and smooth pavement extends between mid-rise buildings, with light traffic and no median visible. A white SUV is parked along the left side near the camera, protruding slightly into the left lane where there is no marked parking space. Far ahead in the same-direction lane, a small white car travels straight at low speed, loosely setting the pace for the ego vehicle. No oncoming vehicles are close in the opposite lane. A no-entry sign is posted at the right-side side street near a T-intersection.", "hazard_reasoning": "There is a white SUV parked in the lane that is left to the ego lane, because there is no parking spot. Following the vehicle ahead will guide you around the obstruction and maintain safe spacing."}
{"id": "train_02421", "split": "train", "clip_key": "2020-0203-154554_073672_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "073672"}, "frames": ["2020-0203-154554_073672_movie_t-3.jpg", "2020-0203-154554_073672_movie_t-2.jpg", "2020-0203-154554_073672_movie_t-1.jpg", "2020-0203-154554_073672_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction and a painted hatched median runs straight toward a signalized intersection; the pavement is dry and traffic is moderate, easing near the junction. A red kei car ahead in the ego lane proceeds slowly toward the intersection, constraining the ego vehicle's pace. A black motorcycle on the left side cuts in from the left lane toward the ego lane and may merge into the ego path. In the opposite direction, several white vans and cars approach on the right-side lane, continuing straight with steady flow.", "hazard_reasoning": "There is a black motorcycle cutting in from the left lane and toward the ego lane. The driver should slow down because the motorcycle's merge reduces space in the ego lane and increases collision risk if speed is maintained."}
{"id": "train_02422", "split": "train", "clip_key": "2020-0204-150838_052690_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "052690"}, "frames": ["2020-0204-150838_052690_movie_t-3.jpg", "2020-0204-150838_052690_movie_t-2.jpg", "2020-0204-150838_052690_movie_t-1.jpg", "2020-0204-150838_052690_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban single-lane connector runs under an elevated expressway, bordered by a left guardrail and a fenced area on the right, with dry, smooth pavement and light traffic and no opposing lane visible. A silver truck drives ahead in the ego lane, moving away at a steady pace and effectively setting the ego car's speed. The roadway bends gently to the right beneath the concrete supports, which limit distant visibility, and no other vehicles or pedestrians appear.", "hazard_reasoning": "There is a silver truck driving in the ego lane away from the ego car. Because the truck and the rightward curve limit the driver's sight of the road ahead, the driver should be aware of potential hidden hazards."}
{"id": "train_02423", "split": "train", "clip_key": "2020-0205-152530_001305_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "001305"}, "frames": ["2020-0205-152530_001305_movie_t-3.jpg", "2020-0205-152530_001305_movie_t-2.jpg", "2020-0205-152530_001305_movie_t-1.jpg", "2020-0205-152530_001305_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the slowing truck.", "environment_perception": "An urban two-way street with one lane per direction and no median appears, the pavement dry and smooth and traffic light as the car approaches a signalized intersection. A white box truck ahead in the left ego lane slows, constraining our pace. At the left corner a dark sedan from a side street edges forward toward the main road and waits near our lane, potentially merging into it. Several pedestrians stand at the curbs on both sides near the crosswalk, pausing at the edge and relevant to the approach. An overhead traffic signal hangs above the junction, and the oncoming lane to the right remains mostly clear down the block.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The truck's reduced speed may force the driver to brake or adjust speed to maintain a safe following distance under this situation, so the driver should heed the warning."}
{"id": "train_02424", "split": "train", "clip_key": "titan_clip_467_000408_movie", "source": {"subset": "titan", "scenario": "clip_467", "frame": "000408"}, "frames": ["titan_clip_467_000408_movie_t-3.jpg", "titan_clip_467_000408_movie_t-2.jpg", "titan_clip_467_000408_movie_t-1.jpg", "titan_clip_467_000408_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "A narrow urban shopping street with brick pavement and bollards lines both curbs, functioning as a low-speed, two-way shared lane with light vehicular traffic but many pedestrians. A tall pedestrian in dark pants carrying a backpack crosses from the left directly in front of the ego-car at an unmarked location without a crosswalk, momentarily blocking the lane. Farther ahead, a pair of pedestrians stand near the lane center and drift rightward, occupying part of the travel path. Additional pedestrians walk along both sides close to storefronts and bollards but mostly remain on the margins. No traffic signals or speed signs are apparent in the scene.", "hazard_reasoning": "There's a tall, male pedestrian wearing black pants and carrying a backpack, crossing the street from left to right in front of the ego-car because there is no crosswalk. The driver should stop to yield to the pedestrian crossing unsafely without a crosswalk to prevent a potential collision."}
{"id": "train_02425", "split": "train", "clip_key": "2020-0225-102455_074167_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_074167_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_074167_movie_t-3_augB1.jpg", "2020-0225-102455_074167_movie_t-2_augB1.jpg", "2020-0225-102455_074167_movie_t-1_augB1.jpg", "2020-0225-102455_074167_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with dry, well-marked pavement carries heavy, stop-and-go traffic as the ego-car travels beneath a pedestrian overpass. A white van directly ahead in the ego lane slows because of congestion and constrains the ego-car's pace. In the right lane slightly ahead, a flatbed truck with a covered load crawls forward parallel to the van, tightening space to the right. On the left, a large white box truck alongside the ego-car edges ahead in the adjacent lane, limiting any leftward maneuver. A roadside no-parking sign is visible among downtown buildings while the queue creeps forward.", "hazard_reasoning": "There is a white van slowing down ahead of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_02426", "split": "train", "clip_key": "2020-0220-102630_023551_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_023551_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_023551_movie_t-3_augB1.jpg", "2020-0220-102630_023551_movie_t-2_augB1.jpg", "2020-0220-102630_023551_movie_t-1_augB1.jpg", "2020-0220-102630_023551_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban multi-lane street with left-side driving passes between mid-rise buildings; the dry pavement looks intact and traffic is heavy and slow-moving. A gray box truck directly ahead in the ego lane slows to a crawl due to congestion ahead, setting the pace for the ego car. In the adjacent right lane, a white box truck slightly ahead creeps forward in parallel, leaving little room for a lane change. On the immediate right beside the ego, a small tarpaulin-covered truck moves slowly and close, further tightening lateral space. A sidewalk with a metal railing and parked bicycles lines the left edge.", "hazard_reasoning": "There is a gray truck slowing down in front of the ego car, due to traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid collisions."}
{"id": "train_02427", "split": "train", "clip_key": "2020-0206-101736_009746_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "009746"}, "frames": ["2020-0206-101736_009746_movie_t-3.jpg", "2020-0206-101736_009746_movie_t-2.jpg", "2020-0206-101736_009746_movie_t-1.jpg", "2020-0206-101736_009746_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane two-way street with no median and smooth pavement; traffic is light but the ego lane is impeded ahead. A blue truck ahead in the ego lane slows to a near stop with its rear open, constraining the ego car's pace. An oncoming silver van in the right-side opposite lane passes the truck toward the camera, temporarily preventing any maneuver around it. On the left sidewalk, a person stands beside parked bicycles behind a railing and stays off the roadway.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, in front of the ego car. You should slow down because the slow-moving truck ahead limits visibility and reduces your reaction time."}
{"id": "train_02428", "split": "train", "clip_key": "titan_clip_764_000204_movie", "source": {"subset": "titan", "scenario": "clip_764", "frame": "000204"}, "frames": ["titan_clip_764_000204_movie_t-3.jpg", "titan_clip_764_000204_movie_t-2.jpg", "titan_clip_764_000204_movie_t-1.jpg", "titan_clip_764_000204_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow forward lane and no median has smooth pavement and light traffic, with no motor vehicles visible ahead or oncoming. A pedestrian wearing a backpack stands in the middle of the intersection ahead, directly in the ego vehicle's path and holding position. Slightly left ahead, three pedestrians walk across the roadway toward the right, crossing in front of the ego lane and constraining progress. On the right edge, a man with a wheeled bag stands at the curb near shopfronts close to the roadway. Bicycles are parked along the right side, reducing available shoulder space.", "hazard_reasoning": "There is a pedestrian wearing a backpack and standing in the middle of the intersection. The driver should slow down because the pedestrian could step into the vehicle's path and cause a collision."}
{"id": "train_02429", "split": "train", "clip_key": "titan_clip_1102_000372_movie", "source": {"subset": "titan", "scenario": "clip_1102", "frame": "000372"}, "frames": ["titan_clip_1102_000372_movie_t-3.jpg", "titan_clip_1102_000372_movie_t-2.jpg", "titan_clip_1102_000372_movie_t-1.jpg", "titan_clip_1102_000372_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian", "environment_perception": "An urban shopping street forms a narrow shared roadway with brick paving, no centerline, and storefronts on both sides; there is no motor traffic and overall movement is light. On the left near the camera, a pedestrian walks toward the ego vehicle along the edge and approaches the path. Farther ahead near the centerline of the lane, another pedestrian proceeds away in the same path, subtly constraining the ego's pace. On the right edge, a person stands by the shops beside parked bicycles, close to the travel way. Numerous bicycles are lined up along both sides, with one front wheel protruding into the right foreground, slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian walking toward the ego car, on the left side of the road. The driver should be aware since the pedestrian may step into the lane unexpectedly and require prompt response."}
{"id": "train_02430", "split": "train", "clip_key": "2020-0129-105040_060850_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "060850"}, "frames": ["2020-0129-105040_060850_movie_t-3.jpg", "2020-0129-105040_060850_movie_t-2.jpg", "2020-0129-105040_060850_movie_t-1.jpg", "2020-0129-105040_060850_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way neighborhood street with a single narrow lane and red edge shoulders appears well maintained, and overall traffic is light as the ego vehicle proceeds in the left lane. Ahead near the center-right, an oncoming cyclist rides steadily toward the camera, likely to pass close to the ego vehicle's path. On the right curb, a small white truck is parked facing the ego, encroaching on the oncoming side and narrowing the roadway. At the right storefront a person stands on a ladder just off the carriageway, stationary but close to traffic. Bicycles and scooters line the left-side shops, further tightening the corridor.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02431", "split": "train", "clip_key": "2020-0129-105040_041373_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "041373"}, "frames": ["2020-0129-105040_041373_movie_t-3.jpg", "2020-0129-105040_041373_movie_t-2.jpg", "2020-0129-105040_041373_movie_t-1.jpg", "2020-0129-105040_041373_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one narrow lane each direction runs under an elevated expressway, bordered by concrete barriers; the pavement is wet but intact, and traffic is light, with the ego vehicle traveling in the left lane. A white truck ahead in the ego lane moves away at a steady pace along a gentle right curve, effectively setting the ego vehicle's following speed. No oncoming vehicles, signals, or speed signs are clearly visible. Large support columns and high side walls constrain visibility around the curve but reveal no additional hazards.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02432", "split": "train", "clip_key": "2020-0207-151349_073401_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "073401"}, "frames": ["2020-0207-151349_073401_movie_t-3.jpg", "2020-0207-151349_073401_movie_t-2.jpg", "2020-0207-151349_073401_movie_t-1.jpg", "2020-0207-151349_073401_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban two-lane one-way road runs beneath an elevated expressway, with a guardrail on the right and a hashed shoulder on the left; the pavement is dry and traffic is light to moderate. A black van drives ahead in the ego lane, and the ego-car moves to the right lane to pass it. Cars already in the right lane slightly ahead continue at a steady pace, leaving a gap that permits the merge. An overhead guide sign shows Atsugi 42 km and Seta 4 km.", "hazard_reasoning": "There is a black van driving in front of the ego-car, in the ego-car lane, and the ego-car changes lanes to move to the right lane. The driver should manoeuvre carefully around the van to avoid collision while changing lanes."}
{"id": "train_02433", "split": "train", "clip_key": "2020-0218-103119_040409_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "040409"}, "frames": ["2020-0218-103119_040409_movie_t-3.jpg", "2020-0218-103119_040409_movie_t-2.jpg", "2020-0218-103119_040409_movie_t-1.jpg", "2020-0218-103119_040409_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane in each direction runs between mid-rise buildings, separated by double white lines; the pavement is smooth and traffic is light. A white box truck directly ahead in the ego lane moves forward with clear space in front, effectively setting the ego vehicle's pace. An oncoming sedan in the right-side lane approaches and passes by in the opposite direction without encroaching on the center.", "hazard_reasoning": "There is a white truck in forward motion in the ego lane, because the road ahead is clear, in front of the ego car. The truck may decelerate unexpectedly, so you should follow the vehicle ahead at a safe distance to avoid collision."}
{"id": "train_02434", "split": "train", "clip_key": "2020-0127-132751_033579_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "033579"}, "frames": ["2020-0127-132751_033579_movie_t-3.jpg", "2020-0127-132751_033579_movie_t-2.jpg", "2020-0127-132751_033579_movie_t-1.jpg", "2020-0127-132751_033579_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road with buildings on both sides and a hedge along the curb appears, the pavement dry and intact, and traffic moving slowly in a queue. Directly ahead in the ego lane, a black van is stopped due to congestion and blocks the ego vehicle's path. In the adjacent left lane, a silver sports car alongside edges forward to pass the queue and stays close to the ego vehicle. Farther ahead in that left lane, a small flatbed truck rolls slowly with little gap, setting the pace for vehicles beside the ego lane.", "hazard_reasoning": "There is a black van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid colliding with the stationary vehicle ahead under congested conditions."}
{"id": "train_02435", "split": "train", "clip_key": "titan_clip_467_000492_movie", "source": {"subset": "titan", "scenario": "clip_467", "frame": "000492"}, "frames": ["titan_clip_467_000492_movie_t-3.jpg", "titan_clip_467_000492_movie_t-2.jpg", "titan_clip_467_000492_movie_t-1.jpg", "titan_clip_467_000492_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow lane on brick paving is lined by bollards and storefronts; the surface looks good and traffic is very light with no other vehicles visible. Ahead, a pedestrian pushing a piece of luggage crosses from the left side to the right, moving through the ego vehicle's path and briefly constraining progress. Near the right curb by a shop entrance, two pedestrians stand partly in the roadway and shuffle along the edge, narrowing the usable lane. On the left sidewalk, another person waits near the curb but remains off the road. Large forward and right-turn arrows are painted on the pavement.", "hazard_reasoning": "There is a pedestrian pushing a piece of luggage and crossing the street from the left side to the right side of the road. The crossing pedestrian with luggage may move unpredictably, requiring the driver to slow down to avoid a collision."}
{"id": "train_02436", "split": "train", "clip_key": "2020-0226-140503_080022_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "080022"}, "frames": ["2020-0226-140503_080022_movie_t-3.jpg", "2020-0226-140503_080022_movie_t-2.jpg", "2020-0226-140503_080022_movie_t-1.jpg", "2020-0226-140503_080022_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane arterial in a dense city setting has painted lane divisions, no physical median, smooth pavement, and heavy stop-and-go flow toward a signalized intersection ahead. A white compact car directly ahead in the ego lane is stopped because congestion blocks the lane, holding the ego vehicle. In the adjacent right lane slightly ahead, a line of cars including a white SUV crawls forward in the same direction, limiting any chance to advance. Along the right curb beside the travel lanes, a small truck stands still close to traffic. Overhead signals are visible above the intersection, and no other unusual hazards appear beyond the congestion.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle."}
{"id": "train_02437", "split": "train", "clip_key": "2020-0129-105040_068706_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "068706"}, "frames": ["2020-0129-105040_068706_movie_t-3.jpg", "2020-0129-105040_068706_movie_t-2.jpg", "2020-0129-105040_068706_movie_t-1.jpg", "2020-0129-105040_068706_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential two-way road with one narrow lane per direction and no median stretches ahead, bordered by low white guardrails; the asphalt looks dry and smooth, and traffic is light. A cyclist carrying a backpack rides ahead in the ego lane along the left edge, moving away at a steady pace within a section marked with bicycle symbols, and is the main road user influencing the ego car's pace. No other moving vehicles or pedestrians are visible, and there is no oncoming traffic in the right-side lane. Bicycle-related pavement markings and a roadside sign are visible, with no signals or posted speeds.", "hazard_reasoning": "There is a cyclist carrying a backpack and cycling, on the left side of the road, away from the ego-car. The cyclist is approaching the ego-vehicle's path, so the driver should slow down to maintain a safe distance and avoid collision."}
{"id": "train_02438", "split": "train", "clip_key": "2020-0220-102630_019207_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "019207"}, "frames": ["2020-0220-102630_019207_movie_t-3.jpg", "2020-0220-102630_019207_movie_t-2.jpg", "2020-0220-102630_019207_movie_t-1.jpg", "2020-0220-102630_019207_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane street lined with mid-rise buildings extends ahead, with two lanes in the ego direction and no visible median; the pavement is dry and intact, and traffic is heavy in slow stop-and-go queues. Directly ahead in the ego lane, a white sedan is stopped because congestion blocks the way, holding the ego vehicle. Farther ahead in the same lane, a tall white box truck waits in the line of traffic, forming a bottleneck that constrains overall pace. To the right, a black microvan in the adjacent lane creeps forward parallel to the ego vehicle, maintaining the queue and limiting opportunities to advance. Pedestrians remain on the left sidewalk, walking past storefronts without approaching the roadway.", "hazard_reasoning": "There is a white sedan stopping in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver needs to stop promptly to maintain a safe following distance and avoid rear-ending the stopped vehicle amid queueing traffic."}
{"id": "train_02439", "split": "train", "clip_key": "2020-0227-153144_003492_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "003492"}, "frames": ["2020-0227-153144_003492_movie_t-3.jpg", "2020-0227-153144_003492_movie_t-2.jpg", "2020-0227-153144_003492_movie_t-1.jpg", "2020-0227-153144_003492_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid rear-end collision.", "environment_perception": "An urban multilane arterial runs between mid-rise buildings with two lanes in the ego direction and painted centerlines separating oncoming traffic; the pavement is dry and smooth, and traffic is heavy and slow. A gray sedan directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle. To the left, a taxi in the adjacent same-direction lane creeps forward beside the queue, limiting space to change lanes. On the right side of the roadway, an oncoming white hatchback advances in its lane and passes the stopped line without deviating. Farther ahead, several vans and cars queue near a green traffic signal, creating the downstream bottleneck.", "hazard_reasoning": "A gray sedan is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid a rear-end collision with the stationary vehicle ahead."}
{"id": "train_02440", "split": "train", "clip_key": "2020-0131-135401_073542_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "073542"}, "frames": ["2020-0131-135401_073542_movie_t-3.jpg", "2020-0131-135401_073542_movie_t-2.jpg", "2020-0131-135401_073542_movie_t-1.jpg", "2020-0131-135401_073542_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision ahead", "environment_perception": "An urban multi-lane arterial lined with tall buildings has smooth pavement and no physical median, with heavy, mostly stopped traffic; the ego vehicle is in the leftmost of several same-direction lanes. A black hatchback is stopped directly ahead in the ego lane due to congestion, holding the ego vehicle. A large white box truck sits slightly ahead to the left in the adjacent lane, barely creeping and partly blocking the forward view. A silver van in the lane to the right edges forward alongside the ego with tight spacing. An overhead gantry sign shows lane guidance with straight-through arrows and a right-turn option.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, because of traffic congestion ahead. Drivers should stop to avoid a collision with the halted vehicle in front."}
{"id": "train_02441", "split": "train", "clip_key": "titan_clip_396_000366_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_396_000366_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_396_000366_movie_t-3_augB1.jpg", "titan_clip_396_000366_movie_t-2_augB1.jpg", "titan_clip_396_000366_movie_t-1_augB1.jpg", "titan_clip_396_000366_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single lane in the ego direction has no median and slightly worn asphalt, and traffic moves lightly at low speed. A white box truck ahead in the same lane proceeds slowly, constraining the ego vehicle's pace. Ahead slightly right, a pedestrian wearing a green shirt is crossing in the middle of the roadway toward the right side and may enter the ego lane. On the left foreground, a parked delivery truck protrudes into the lane while traffic cones along the curbs narrow the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a green shirt and crossing the street, in the middle of the road, to the right side. The pedestrian's presence on the roadway ahead poses a collision risk, so the driver should slow down to allow them to cross safely."}
{"id": "train_02442", "split": "train", "clip_key": "2020-0129-144857_008435_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "008435"}, "frames": ["2020-0129-144857_008435_movie_t-3.jpg", "2020-0129-144857_008435_movie_t-2.jpg", "2020-0129-144857_008435_movie_t-1.jpg", "2020-0129-144857_008435_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection on a two-way road has smooth pavement and moderate traffic, with movement pausing at a red signal. Ahead in the ego lane a gray hatchback is stopped at the stop line for the red light, holding the ego vehicle. A pedestrian crosses the near crosswalk from left to right in front of the stopped traffic. In the oncoming lanes to the right, a black boxy car proceeds through the junction toward our left, clearing the intersection. Overhead signals show red for our direction.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid a collision and comply with the traffic signal."}
{"id": "train_02443", "split": "train", "clip_key": "2020-0225-145150_044896_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "044896"}, "frames": ["2020-0225-145150_044896_movie_t-3.jpg", "2020-0225-145150_044896_movie_t-2.jpg", "2020-0225-145150_044896_movie_t-1.jpg", "2020-0225-145150_044896_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid rear-ending the truck.", "environment_perception": "An urban arterial with at least two same-direction lanes runs past mid-rise buildings and a fenced sidewalk; the pavement is dry, there is no physical median visible, and traffic is heavy, slowing to a stop. Directly ahead in the ego lane, a blue-and-gray small truck is stopped with its brake lights lit due to congestion, holding the ego vehicle. In the adjacent left lane ahead, a large white box truck is also stationary in the queue, blocking an easy lane change. Slightly left between them, a black SUV inches forward in a tight gap, further constraining progress.", "hazard_reasoning": "There is a blue and gray truck stopped, with brake lights on, in the ego lane, because of traffic congestion ahead. Drivers should stop to maintain a safe following distance and avoid a collision with the halted truck."}
{"id": "train_02444", "split": "train", "clip_key": "2020-0205-103411_047196_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "047196"}, "frames": ["2020-0205-103411_047196_movie_t-3.jpg", "2020-0205-103411_047196_movie_t-2.jpg", "2020-0205-103411_047196_movie_t-1.jpg", "2020-0205-103411_047196_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of hatchback changing lanes", "environment_perception": "An urban multi-lane arterial with no physical median and smooth pavement carries moderate flow, with oncoming traffic on the right side. Approaching a signalized intersection, a black hatchback directly ahead shifts left into the adjacent lane, edging over and briefly constraining the ego car's pace. To the left front, a silver sedan continues straight in the left lane beside the hatchback, limiting space for that lane change. In the right lane ahead, a white sedan advances steadily at similar speed and remains outside the ego path. Overhead traffic signals mark the junction ahead, and construction barriers line the left sidewalk but stay off the roadway.", "hazard_reasoning": "There is a black hatchback in front of the ego car, changing to the left lane. The vehicle may merge into the driver's path unexpectedly, so the driver should be aware of its lane change to maintain a safe following distance."}
{"id": "train_02445", "split": "train", "clip_key": "2020-0204-103442_089801_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-103442_089801_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-103442_089801_movie_t-3_augB1.jpg", "2020-0204-103442_089801_movie_t-2_augB1.jpg", "2020-0204-103442_089801_movie_t-1_augB1.jpg", "2020-0204-103442_089801_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of the cyclist", "environment_perception": "An urban two-lane bridge carries light two-way traffic; the ego travels in the left lane, divided from oncoming traffic by a yellow centerline with flexible posts on worn pavement. A black SUV ahead in the ego lane proceeds steadily and constrains the ego car's pace. A cyclist rides along the far-left edge near the guardrail, not in a marked bike lane, and may encroach into the ego lane. In the opposing lane a white van approaches, followed by another car, continuing straight past the ego vehicle. Chevron boards, barriers, and a tall crane indicate roadside construction along the route.", "hazard_reasoning": "There is a cyclist riding on the left side of the road, to the left of the ego-car, because there is a bike lane. The cyclist could drift into the vehicle lane unexpectedly, so be aware of the cyclist."}
{"id": "train_02446", "split": "train", "clip_key": "titan_clip_112_000300_movie", "source": {"subset": "titan", "scenario": "clip_112", "frame": "000300"}, "frames": ["titan_clip_112_000300_movie_t-3.jpg", "titan_clip_112_000300_movie_t-2.jpg", "titan_clip_112_000300_movie_t-1.jpg", "titan_clip_112_000300_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "A narrow urban side street with brick paving runs between tall buildings, with no median and a smooth surface; traffic is light and slow. A white box truck and a small van stand along the left curb ahead, narrowing the available lane and shaping the ego vehicle's path. On the right side, two pedestrians wearing skirts walk away from the ego car along the curb, staying close to the roadway and potentially entering the travel lane. Farther ahead a few more pedestrians move near storefronts on both sides but remain off the lane.", "hazard_reasoning": "There are two pedestrians wearing skirts, walking along the right side of the road, away from the ego car. The pedestrians are close to the roadway and could step into the vehicle's path, so the driver should remain vigilant to avoid a sudden encounter."}
{"id": "train_02447", "split": "train", "clip_key": "2020-0129-144857_024101_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "024101"}, "frames": ["2020-0129-144857_024101_movie_t-3.jpg", "2020-0129-144857_024101_movie_t-2.jpg", "2020-0129-144857_024101_movie_t-1.jpg", "2020-0129-144857_024101_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial runs under an elevated structure, with two same-direction lanes and a concrete median on the right; the pavement is worn but intact, and traffic is queued and slow. A black sedan is directly ahead in the ego lane, stopped for a red light and holding the ego vehicle. To the left, a small white truck and a silver van move slowly alongside in the adjacent lane as part of the same queue. Farther ahead in the ego lane, a tall white box truck also waits, further constraining movement. The oncoming lanes beyond the median are mostly clear with only a few distant vehicles.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop promptly to maintain safe distance and avoid a rear-end collision."}
{"id": "train_02448", "split": "train", "clip_key": "titan_clip_23_000456_movie", "source": {"subset": "titan", "scenario": "clip_23", "frame": "000456"}, "frames": ["titan_clip_23_000456_movie_t-3.jpg", "titan_clip_23_000456_movie_t-2.jpg", "titan_clip_23_000456_movie_t-1.jpg", "titan_clip_23_000456_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "A dense urban side street with brick paving has no center divider and a very narrow single lane between tall buildings; traffic moves lightly at low speed. A black van is parked on the right side of the road, tightening the usable lane and creating a roadside obstruction. Another black van ahead in the ego lane proceeds slowly through the gap, setting the pace for the ego vehicle. Pedestrians line the left sidewalk, including one close to the curb under an umbrella, and more appear farther ahead near the roadway, so they may step into the lane. Green cones and poles edge the left side and channel walking space.", "hazard_reasoning": "There is a black van that is parked on the right side of the road. The driver should manoeuvre carefully around it to avoid a collision."}
{"id": "train_02449", "split": "train", "clip_key": "2020-0131-135401_073700_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "073700"}, "frames": ["2020-0131-135401_073700_movie_t-3.jpg", "2020-0131-135401_073700_movie_t-2.jpg", "2020-0131-135401_073700_movie_t-1.jpg", "2020-0131-135401_073700_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs between mid-rise buildings; the asphalt is dry and smooth, and traffic is heavy and mostly stopped. Directly ahead in the ego lane, a black hatchback is stopped because congestion blocks the way, holding the ego vehicle. In the lane ahead-left, a tall white box truck remains nearly stationary and limits forward visibility. Along the right side, a silver van creeps ahead in the adjacent lane, staying close alongside. An overhead blue sign shows lane directions with straight-ahead arrows and a right-turn option.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the halted vehicle."}
{"id": "train_02450", "split": "train", "clip_key": "titan_clip_78_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_78_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_78_000198_movie_t-3_augB1.jpg", "titan_clip_78_000198_movie_t-2_augB1.jpg", "titan_clip_78_000198_movie_t-1_augB1.jpg", "titan_clip_78_000198_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for crossing pedestrian ahead.", "environment_perception": "An urban two-lane, two-way street with no median and smooth pavement carries light traffic. A 30 km/h sign and a large 30 road marking are visible, and a long construction wall runs along the right sidewalk while bicycles are parked at the left curb. A white hatchback immediately ahead in the left-side ego lane continues straight and effectively sets the pace. Farther ahead in the same lane, a small white car also proceeds forward toward the distance. In the opposite lane on the right, a dark van approaches steadily while staying within its lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, crossing the street in the middle of the road, from the right side to the left side. The driver should slow down because the pedestrian could step into the vehicle's path unexpectedly."}
{"id": "train_02451", "split": "train", "clip_key": "2020-0131-103016_043827_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "043827"}, "frames": ["2020-0131-103016_043827_movie_t-3.jpg", "2020-0131-103016_043827_movie_t-2.jpg", "2020-0131-103016_043827_movie_t-1.jpg", "2020-0131-103016_043827_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A dense urban downtown scene shows a wide multi-lane arterial meeting a large intersection; the pavement is smooth and traffic is light. A motor scooter ahead slightly left travels straight through the junction in the same direction as the ego vehicle, occupying the near-left portion of the approach. A white minivan in the center of the intersection moves right to left as cross traffic, passing across the ego's path. Several pedestrians walk along the right-side sidewalk without stepping into the crossing. Two light trucks are stopped along the right curb near the corner, while a few distant cars continue ahead beyond the intersection.", "hazard_reasoning": "The intersection is controlled and clear with no obstacles; no immediate hazard is present, so no warning is necessary."}
{"id": "train_02452", "split": "train", "clip_key": "2020-0227-104226_015873_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "015873"}, "frames": ["2020-0227-104226_015873_movie_t-3.jpg", "2020-0227-104226_015873_movie_t-2.jpg", "2020-0227-104226_015873_movie_t-1.jpg", "2020-0227-104226_015873_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with smooth asphalt and a right-side guardrail, and traffic is heavy and slow. A white box truck ahead in the ego lane drives away from the camera at low speed, directly setting the ego vehicle's pace. In the lane to the left, a white minivan slightly ahead creeps forward beside the truck, restricting any chance for a lane change. A black sedan passes on the far left and draws level before moving ahead without entering the ego lane. Beyond the right-hand barrier, a separate roadway carries oncoming cars toward the camera, isolated from the ego path.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego-car. The truck is nearing the red traffic light and may stop, so follow the vehicle ahead to adjust speed and maintain safety."}
{"id": "train_02453", "split": "train", "clip_key": "2020-0225-145150_000246_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "000246"}, "frames": ["2020-0225-145150_000246_movie_t-3.jpg", "2020-0225-145150_000246_movie_t-2.jpg", "2020-0225-145150_000246_movie_t-1.jpg", "2020-0225-145150_000246_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "be aware of the motorcycle ahead", "environment_perception": "An urban two-way street with a single lane per direction runs past shops and sidewalks, with a fresh zebra crossing and no median; pavement looks dry and traffic is light to moderate. A white van ahead slightly left turns left into a side street just past the crosswalk, momentarily occupying and then clearing the ego lane. A black motorcycle moves forward in front of the ego car in the ego lane as traffic flows, effectively setting the pace. Several pedestrians on the right sidewalk walk near the corner and pause by the curb at the crosswalk, so they may step into the roadway. An overhead signal and a bus stop sign are visible at the intersection.", "hazard_reasoning": "There is a black motorcycle moving forward in front of the ego car in the ego lane, because traffic is flowing. Stay alert as the motorcycle may slow or brake suddenly, requiring prompt reaction aligned with the warning content."}
{"id": "train_02454", "split": "train", "clip_key": "2020-0226-101332_047016_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "047016"}, "frames": ["2020-0226-101332_047016_movie_t-3.jpg", "2020-0226-101332_047016_movie_t-2.jpg", "2020-0226-101332_047016_movie_t-1.jpg", "2020-0226-101332_047016_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to the stopped vehicle ahead", "environment_perception": "An urban multilane arterial approaches a signalized intersection, with smooth pavement and light to moderate, slow-moving traffic; lanes split rightward behind low barriers. A green sedan is stopped directly ahead in the ego lane because the light ahead is red, holding the ego vehicle at the queue. In the adjacent lane to the left, a large green city bus waits near the stop line and limits the view across the junction. To the right, a white car follows the curved right-turn lane toward the intersection, remaining separate from the ego's path. The mast-mounted traffic signal is visible above the roadway, and roadside barriers mark a work area at the corner.", "hazard_reasoning": "There is a green sedan stopped in front of the ego-car, in the ego lane, because of the red traffic light ahead at the intersection. The driver should yield to the stopped vehicle to avoid a rear-end collision."}
{"id": "train_02455", "split": "train", "clip_key": "titan_clip_1213_000258_movie", "source": {"subset": "titan", "scenario": "clip_1213", "frame": "000258"}, "frames": ["titan_clip_1213_000258_movie_t-3.jpg", "titan_clip_1213_000258_movie_t-2.jpg", "titan_clip_1213_000258_movie_t-1.jpg", "titan_clip_1213_000258_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrian walking on road", "environment_perception": "A narrow urban side street without a centerline runs between close buildings, the asphalt looks worn but clear, and traffic is very light with no vehicles visible. On the left edge near the camera, a pedestrian wearing a backpack, a blue T-shirt, and black shorts walks toward the ego vehicle along the curb, potentially edging into the travel path because there is no sidewalk. On the right by a storefront mid-distance, another pedestrian steps off the curb and then walks along the side away from the ego vehicle, staying outside the lane. Far ahead near the middle of the road, a third pedestrian proceeds away from the camera, not affecting the ego vehicle's pace. No traffic signals or signs control this block.", "hazard_reasoning": "There is a pedestrian wearing a backpack, a blue T-shirt, and black shorts, and walking on the left side of the road, towards the ego car. The pedestrian is walking towards the vehicle's path and may enter the lane unexpectedly, so the driver should be cautious to prevent a collision."}
{"id": "train_02456", "split": "train", "clip_key": "2020-0205-152530_050943_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "050943"}, "frames": ["2020-0205-152530_050943_movie_t-3.jpg", "2020-0205-152530_050943_movie_t-2.jpg", "2020-0205-152530_050943_movie_t-1.jpg", "2020-0205-152530_050943_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes and a planted median stretches ahead on smooth pavement with a red approach zone; traffic is moderate and generally flowing. Directly ahead in the ego lane, a grey light truck slows, constraining the ego vehicle's pace. To the immediate right, a large silver box truck runs alongside near the lane line as the lanes converge, so it may edge into the ego lane. Farther ahead in the right lane, a white van proceeds straight at a similar speed and remains ahead. Overhead blue direction boards and distant traffic signals span the roadway.", "hazard_reasoning": "There is a grey truck slowing down in the ego lane. The truck's decreased speed ahead could necessitate a reduction in speed to maintain a safe following distance."}
{"id": "train_02457", "split": "train", "clip_key": "2020-0129-105040_002841_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-105040_002841_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-105040_002841_movie_t-3_augB1.jpg", "2020-0129-105040_002841_movie_t-2_augB1.jpg", "2020-0129-105040_002841_movie_t-1_augB1.jpg", "2020-0129-105040_002841_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a narrow raised median and smooth pavement runs between mid-rise buildings; the ego side has a single through lane and traffic is moderate and steady. A light truck ahead in the ego lane proceeds straight at a constant pace, setting the flow. To the right beyond the median, an oncoming kei truck and several cars approach and pass in their lanes without impacting the ego path. On the left edge near the curb, a pedestrian stands beside a parked vehicle protruding into the roadway, and may enter the ego lane because of this obstruction. Several other vehicles are parked along the curbs, slightly narrowing the usable space.", "hazard_reasoning": "There is a pedestrian standing on the left side of the road because of the parked vehicle ahead on the road. The parked car narrows the roadside space and may force the pedestrian into traffic, so you should slow down to maintain control and avoid collision."}
{"id": "train_02458", "split": "train", "clip_key": "2020-0205-103411_092757_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "092757"}, "frames": ["2020-0205-103411_092757_movie_t-3.jpg", "2020-0205-103411_092757_movie_t-2.jpg", "2020-0205-103411_092757_movie_t-1.jpg", "2020-0205-103411_092757_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way arterial with a broad intersection ahead and dry, slightly worn pavement shows light traffic. The ego travels in the leftmost lane. A black truck ahead in the ego lane slows toward the junction, constraining the ego vehicle's pace. Several pedestrians wait near the left-side corner behind a guardrail and remain off the crosswalk. The opposite-direction lanes look mostly clear with only distant vehicles. A narrow curb island with posts lines the right edge near the intersection, and strong sun glare from the upper left washes part of the scene.", "hazard_reasoning": "There is a black truck slowing in front of the ego car, in the ego lane. Slow down to maintain a safe distance and avoid a collision."}
{"id": "train_02459", "split": "train", "clip_key": "2020-0217-110854_044850_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "044850"}, "frames": ["2020-0217-110854_044850_movie_t-3.jpg", "2020-0217-110854_044850_movie_t-2.jpg", "2020-0217-110854_044850_movie_t-1.jpg", "2020-0217-110854_044850_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be aware of stopped vehicle on the left", "environment_perception": "An urban expressway runs under elevated structures with two same-direction lanes, a right-side guardrail and sound wall, smooth pavement, and light, steady traffic. A black boxy minivan ahead in the ego lane travels at a moderate pace and effectively sets the speed. In the lane to the left of the ego-car, a white van is stopped, occupying that lane as described. Along the far left shoulder, a flatbed truck loaded with goods is parked just beyond a pedestrian overpass. A couple of other light vans remain lined along the left edge and appear stationary, while the right lane ahead stays clear.", "hazard_reasoning": "There is a white sedan stopped in the lane to the left of the ego-car. The stationary vehicle could force sudden lane changes or speed reductions, so the driver should stay alert to avoid collision."}
{"id": "train_02460", "split": "train", "clip_key": "2020-0214-102601_005542_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "005542"}, "frames": ["2020-0214-102601_005542_movie_t-3.jpg", "2020-0214-102601_005542_movie_t-2.jpg", "2020-0214-102601_005542_movie_t-1.jpg", "2020-0214-102601_005542_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban road curves right beside a raised shrub median that separates oncoming lanes; the pavement is dry and smooth, and traffic appears light. Ahead in the ego lane, a silver sedan is stopped, yielding to traffic and temporarily blocking the path. No other nearby vehicles or pedestrians are apparent, and no salient traffic signals or speed signs are clearly visible.", "hazard_reasoning": "There is a silver sedan stopped in the ego lane, because it is yielding to traffic. The driver should slow down to avoid colliding with the stopped vehicle ahead."}
{"id": "train_02461", "split": "train", "clip_key": "2020-0228-150133_024131_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "024131"}, "frames": ["2020-0228-150133_024131_movie_t-3.jpg", "2020-0228-150133_024131_movie_t-2.jpg", "2020-0228-150133_024131_movie_t-1.jpg", "2020-0228-150133_024131_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection appears on a wide two-way road, the ego vehicle stopped in the left lane on dry, smooth pavement with light traffic waiting at the line. Ahead at the zebra crossing, a pedestrian in a black coat carrying a handbag walks from the near side toward the right side of the road while the light is red, passing directly across the ego lane and holding the vehicle. Another pedestrian crosses ahead from left to right through the same crosswalk, continuing steadily across the path. A third pedestrian near the far side moves rightward across the lanes, clearing the intersection. On the far corner, a cyclist rolls slowly along the sidewalk beside the crosswalk without entering the roadway. The traffic signal facing the ego direction shows red.", "hazard_reasoning": "There is a pedestrian wearing a black coat and handbag, crossing at the pedestrian crosswalk to the right side of the road, because of the red light. You should stop to yield to the pedestrian crossing under a red light and avoid a collision."}
{"id": "train_02462", "split": "train", "clip_key": "titan_clip_1313_000390_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1313_000390_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1313_000390_movie_t-3_augB1.jpg", "titan_clip_1313_000390_movie_t-2_augB1.jpg", "titan_clip_1313_000390_movie_t-1_augB1.jpg", "titan_clip_1313_000390_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single lane and no median curves gently right between close buildings; pavement is smooth and traffic is light. A white van ahead in the ego lane proceeds slowly toward the bend, setting the pace. On the right side, two men wearing white shirts walk in a small group away from the ego vehicle because a parked car occupies the curb, keeping close to the roadway and near the ego path. Additional pedestrians accompany them but remain at the edge. A dark car is parked on the right, narrowing the lane and creating a mild squeeze point.", "hazard_reasoning": "There are two men wearing white shirts and walking in a group, on the right side of the road, away from the ego car, because of the parked vehicle. These pedestrians may step into the roadway to bypass the parked vehicle, requiring the driver to slow down to ensure safety."}
{"id": "train_02463", "split": "train", "clip_key": "titan_clip_66_000186_movie", "source": {"subset": "titan", "scenario": "clip_66", "frame": "000186"}, "frames": ["titan_clip_66_000186_movie_t-3.jpg", "titan_clip_66_000186_movie_t-2.jpg", "titan_clip_66_000186_movie_t-1.jpg", "titan_clip_66_000186_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around van", "environment_perception": "A narrow urban two-way street with no center line and intact but worn asphalt shows light traffic as the ego vehicle proceeds along the left side. Ahead on the right curb, a white van is parked for unloading, jutting slightly into the travel lane and narrowing space in the ego lane. Farther ahead in the same direction, a small truck continues away along the center of the road, subtly setting the pace. No traffic signals or posted speeds are visible, and there are no oncoming vehicles or pedestrians.", "hazard_reasoning": "There is a white van parked on the left side of the road in the ego lane, because it is being unloaded. This parked van obstructs the lane and forces the driver to alter their path, so a careful maneuver is needed to avoid collision."}
{"id": "train_02464", "split": "train", "clip_key": "2020-0206-142535_009764_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "009764"}, "frames": ["2020-0206-142535_009764_movie_t-3.jpg", "2020-0206-142535_009764_movie_t-2.jpg", "2020-0206-142535_009764_movie_t-1.jpg", "2020-0206-142535_009764_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with smooth asphalt and no physical median is shown, and traffic is moderate but queued at a signalized intersection. A white truck directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the lane to the left, a black taxi is also stopped slightly ahead alongside, limiting any immediate lane change. Farther ahead in that left lane, a white box truck waits in the queue. The traffic signal ahead on the right shows red.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The ego-vehicle must also stop to avoid collision with the halted truck and comply with the red signal."}
{"id": "train_02465", "split": "train", "clip_key": "2020-0203-154554_050964_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "050964"}, "frames": ["2020-0203-154554_050964_movie_t-3.jpg", "2020-0203-154554_050964_movie_t-2.jpg", "2020-0203-154554_050964_movie_t-1.jpg", "2020-0203-154554_050964_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban arterial under an elevated roadway carries two same-direction lanes beside a leftside service lane behind a metal guardrail; the pavement is dry and traffic is queued at the intersection. A silver sedan directly ahead in the ego lane is stopped for a red traffic signal, holding the ego vehicle. Farther ahead in the same lane, a white box truck waits in the line, constraining the pace. In the right lane, a dark van slightly ahead is also stopped alongside, matching the queue. Ahead right, a small utility truck angles left and creeps toward the lane line, suggesting it may enter the ego lane when space appears. Overhead traffic lights clearly display red.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, because of a red traffic light. Stop at the red light to avoid a collision with the halted sedan."}
{"id": "train_02466", "split": "train", "clip_key": "titan_clip_14_000474_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_14_000474_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_14_000474_movie_t-3_augB1.jpg", "titan_clip_14_000474_movie_t-2_augB1.jpg", "titan_clip_14_000474_movie_t-1_augB1.jpg", "titan_clip_14_000474_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street has a single narrow shared lane paved with bricks, no divider, and a smooth surface; motor traffic is light and the car proceeds slowly amid pedestrians. Near the right front, a pedestrian wearing a blue T-shirt and black pants stands in the middle of the road facing left, occupying the ego lane. Farther ahead in the center, another person stands still, and several pedestrians ahead walk along or cross between the shopfronts, loosely dispersed in the lane. On the right, a recessed driveway or parking-garage entrance opens onto the roadway, while a bicycle is parked by a storefront on the left. No traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt and black pants, standing in the middle of the road. The driver should slow down to maintain a safe distance and avoid a collision with the pedestrian."}
{"id": "train_02467", "split": "train", "clip_key": "2020-0203-154554_037984_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "037984"}, "frames": ["2020-0203-154554_037984_movie_t-3.jpg", "2020-0203-154554_037984_movie_t-2.jpg", "2020-0203-154554_037984_movie_t-1.jpg", "2020-0203-154554_037984_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In an urban setting, the ego vehicle drives beneath an elevated roadway on a three-lane same-direction arterial with a guardrail divider to the right and smooth pavement; traffic is light to moderate and flows steadily. A white van ahead in the left lane travels away from the ego car, holding its lane and effectively setting the pace. Farther ahead in the middle lane, a large box truck proceeds steadily in the same direction, occupying space the ego vehicle might use to pass. To the right of the truck, a dark minivan moves slightly ahead in the right lane, limiting immediate opportunities to change lanes. Bicycles line the left curb behind a railing.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02468", "split": "train", "clip_key": "titan_clip_621_000084_movie", "source": {"subset": "titan", "scenario": "clip_621", "frame": "000084"}, "frames": ["titan_clip_621_000084_movie_t-3.jpg", "titan_clip_621_000084_movie_t-2.jpg", "titan_clip_621_000084_movie_t-1.jpg", "titan_clip_621_000084_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian ahead", "environment_perception": "An urban commercial street with a single narrow lane is bounded by railings and a zebra crossing in the foreground. The pavement looks sound and motor traffic is light with no vehicles ahead. A pedestrian wearing a beige shirt and beige pants is in the middle of the lane ahead walking toward the ego vehicle, directly occupying its path and constraining progress. Another pedestrian near the left rail ahead moves toward the lane edge and could enter the path. A person on the right sidewalk walks parallel to the road and remains clear of the lane. Bicycles are parked along the left behind a fence, and no other hazards are visible.", "hazard_reasoning": "There is a pedestrian wearing a beige shirt and beige pants, and walking towards the ego car, in the middle of the road. The pedestrian is entering the roadway ahead and may cross the vehicle's path, requiring the driver to yield to avoid a collision."}
{"id": "train_02469", "split": "train", "clip_key": "titan_clip_837_000288_movie", "source": {"subset": "titan", "scenario": "clip_837", "frame": "000288"}, "frames": ["titan_clip_837_000288_movie_t-3.jpg", "titan_clip_837_000288_movie_t-2.jpg", "titan_clip_837_000288_movie_t-1.jpg", "titan_clip_837_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow single-lane carriageway has no divider and block-paved surface in good condition; traffic is light and slow. Ahead, a pedestrian wearing a cap and a striped shirt crosses midblock from right to left in the middle of the road, moving across the ego path. Farther ahead, a small van in the same direction proceeds slowly along the center of the street, loosely setting the pace. On the near right, a white station wagon is stopped at the curb with its rear protruding, narrowing the available lane. Bicycles are parked along storefronts and there are no visible traffic signals.", "hazard_reasoning": "There is a pedestrian wearing a cap and a striped shirt, crossing the street in the middle of the road, from the right side to the left side. The pedestrian may enter the vehicle's path unexpectedly, so the driver should slow down to ensure safe passage."}
{"id": "train_02470", "split": "train", "clip_key": "2020-0206-142535_007634_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "007634"}, "frames": ["2020-0206-142535_007634_movie_t-3.jpg", "2020-0206-142535_007634_movie_t-2.jpg", "2020-0206-142535_007634_movie_t-1.jpg", "2020-0206-142535_007634_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the truck", "environment_perception": "An urban two-way street with a single narrow lane each direction and a painted centerline runs between low-rise buildings and trees; the pavement is slightly worn with manholes, and traffic in the ego direction is stopped. Ahead in the ego lane a white light truck is stationary, halted by congestion, with a larger box truck stopped just beyond it, forming a short queue that blocks the lane. From the left, a person on a mobility scooter rolls onto the zebra crossing at a side street and may continue across the ego lane in front of the stopped vehicles. Farther ahead in the opposite lane, a white van approaches slowly as oncoming traffic beyond the trucks.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop behind the truck to avoid a rear-end collision given the obscured road ahead."}
{"id": "train_02471", "split": "train", "clip_key": "titan_clip_1136_000384_movie", "source": {"subset": "titan", "scenario": "clip_1136", "frame": "000384"}, "frames": ["titan_clip_1136_000384_movie_t-3.jpg", "titan_clip_1136_000384_movie_t-2.jpg", "titan_clip_1136_000384_movie_t-1.jpg", "titan_clip_1136_000384_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked vehicle", "environment_perception": "A narrow urban commercial two-way street is shown, with the ego vehicle proceeding in the left lane on smooth pavement and light vehicular flow. Ahead on the right side, a black sedan is parked at the curb, protruding into the roadway and narrowing the available space. Several pedestrians ahead near the centerline walk from the left side toward the right, crossing the street and occupying part of the ego lane, which constrains the pace. Another pedestrian stands close to the left edge beside the ego lane while walking slowly along the curb. No oncoming vehicles are visible, and no active traffic signals appear in view.", "hazard_reasoning": "There is a black sedan parked on the right side of the road; the driver needs to manoeuvre carefully to avoid a collision with the parked vehicle."}
{"id": "train_02472", "split": "train", "clip_key": "titan_clip_745_000042_movie", "source": {"subset": "titan", "scenario": "clip_745", "frame": "000042"}, "frames": ["titan_clip_745_000042_movie_t-3.jpg", "titan_clip_745_000042_movie_t-2.jpg", "titan_clip_745_000042_movie_t-1.jpg", "titan_clip_745_000042_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrians", "environment_perception": "An urban shopping street appears with a narrow single-lane roadway and no divider; the asphalt is dry and there is no motor traffic, but pedestrian activity in the lane is heavy. A group of pedestrians in white shirts occupies the middle ahead, some walking toward and others away from the ego-vehicle, and they directly block its path. On the right edge beside storefronts, a man walks toward the ego-vehicle along the curb and drifts slightly into the lane, so he may enter the ego lane. Near the left edge by a restaurant, another pedestrian steps toward the center while gesturing. A blue circular sign on the left indicates straight ahead only.", "hazard_reasoning": "There is a group of pedestrians wearing white shirts, and walking towards and away from the ego car, in the middle of the road. The driver should yield to pedestrians crossing ahead to avoid collisions."}
{"id": "train_02473", "split": "train", "clip_key": "2020-0220-102630_046699_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "046699"}, "frames": ["2020-0220-102630_046699_movie_t-3.jpg", "2020-0220-102630_046699_movie_t-2.jpg", "2020-0220-102630_046699_movie_t-1.jpg", "2020-0220-102630_046699_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial runs straight with smooth asphalt, a guardrail and elevated structure along the right, and traffic moves at a moderate, steady pace. A white box truck is directly ahead in the ego lane, driving away at a similar speed and effectively setting the ego car's following distance. In the lane to the left, a black van ahead continues straight and gradually draws past the truck while staying in its lane. Farther left, a small flatbed truck proceeds ahead near the buildings without affecting the ego path. Overhead direction signs span the roadway, and the right-side guardrail and wall create a confined shoulder but no obstacles.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. Maintain a safe distance and stay alert as the truck ahead may brake suddenly."}
{"id": "train_02474", "split": "train", "clip_key": "2020-0207-151349_092422_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "092422"}, "frames": ["2020-0207-151349_092422_movie_t-3.jpg", "2020-0207-151349_092422_movie_t-2.jpg", "2020-0207-151349_092422_movie_t-1.jpg", "2020-0207-151349_092422_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with metal railings flanking the lanes runs through dense buildings; the pavement is dry with strong sun glare from the right, and traffic is heavy and slow. A white truck with a green tarp is stopped directly ahead in the ego lane, holding the queue. A large dump truck in the adjacent right lane creeps forward beside the ego vehicle and then edges slightly ahead, continuing in the same direction and limiting lateral space. A white van stands at the left edge beside the lane near the ego car, further narrowing the corridor. Overhead gantries are visible farther ahead, and no traffic signal aspect is clearly seen.", "hazard_reasoning": "There is a white truck with a green tarp, stopped in front of the ego car, because of the red traffic light. The ego-vehicle must stop to avoid a rear-end collision with the stopped truck."}
{"id": "train_02475", "split": "train", "clip_key": "2020-0205-152530_033459_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "033459"}, "frames": ["2020-0205-152530_033459_movie_t-3.jpg", "2020-0205-152530_033459_movie_t-2.jpg", "2020-0205-152530_033459_movie_t-1.jpg", "2020-0205-152530_033459_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement and a planted divider on the right carries steady, moderate same-direction traffic. A white box truck directly ahead in the ego lane moves away, accelerating because the road in front of it is clear. To the left, a white minivan runs alongside slightly ahead at a similar pace, constraining a left lane change. In the adjacent right lane, a small white van continues forward a short distance ahead without drifting toward the ego lane. Overhead gantries span the roadway, with no signal aspects clearly visible.", "hazard_reasoning": "There is a white truck driving away from the ego car, in the ego lane, because road ahead is clear, in front of the white truck. Following the vehicle ahead ensures a safe distance to react if it brakes suddenly."}
{"id": "train_02476", "split": "train", "clip_key": "2020-0127-132751_003631_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "003631"}, "frames": ["2020-0127-132751_003631_movie_t-3.jpg", "2020-0127-132751_003631_movie_t-2.jpg", "2020-0127-132751_003631_movie_t-1.jpg", "2020-0127-132751_003631_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban single-lane road curves right between tall buildings, bounded by a concrete wall on the right and a curb on the left; the pavement is dry and smooth, and traffic is light with no vehicle directly ahead. On the left ahead, several construction workers stand and move within a coned-off area at the edge of the lane, narrowing the path and becoming relevant as the ego-vehicle approaches. A small work truck is stopped inside the closure on the left, stationary but close to the travel lane. On a lower parallel roadway to the right, a few vehicles pass separately behind the wall. Temporary arrow boards and signs direct traffic to move to the right lane through the work zone.", "hazard_reasoning": "There is construction work on the left side of the road with signs indicating to move to the right lane. Drivers should follow the vehicle ahead to merge smoothly into the right lane and avoid the construction zone."}
{"id": "train_02477", "split": "train", "clip_key": "titan_clip_975_000024_movie", "source": {"subset": "titan", "scenario": "clip_975", "frame": "000024"}, "frames": ["titan_clip_975_000024_movie_t-3.jpg", "titan_clip_975_000024_movie_t-2.jpg", "titan_clip_975_000024_movie_t-1.jpg", "titan_clip_975_000024_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban neighborhood street appears as a single narrow two-way lane with no centerline, smooth asphalt, and very light traffic; white guardrails border a pedestrian strip on the right while shops line the left. Ahead on the left, two pedestrians wearing brown and black pants walk toward the ego vehicle along the lane edge and may encroach on its path. Farther ahead near the left storefront, another person stands by the entrance and moves slowly along the curb with minimal impact on the lane. Boxes and goods stacked outside the shop narrow the left margin, and several bicycles are parked off the roadway to the right.", "hazard_reasoning": "There are two pedestrians wearing brown and black pants, walking on the left side of the road, towards the ego car. The driver should carefully manoeuvre around the pedestrians to avoid a collision."}
{"id": "train_02478", "split": "train", "clip_key": "2020-0205-152530_044026_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-152530_044026_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-152530_044026_movie_t-3_augB1.jpg", "2020-0205-152530_044026_movie_t-2_augB1.jpg", "2020-0205-152530_044026_movie_t-1_augB1.jpg", "2020-0205-152530_044026_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban bidirectional arterial with multiple same-direction lanes and no physical median runs between mid-rise buildings; the pavement appears smooth and traffic is moderate, bunching near a signalized intersection ahead. The white box truck ahead in the ego lane slows in a short queue because of congestion ahead, setting the ego vehicle's pace. A dark car in the adjacent right lane travels parallel at a similar speed while keeping its lane, not moving toward the ego path. Pedestrians near the left-side crosswalk walk along the curb and wait at the corner without stepping into the road. Overhead blue guide signs hang above the lanes approaching the junction.", "hazard_reasoning": "There is a white truck slowing down ahead of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and respond to the congested traffic conditions."}
{"id": "train_02479", "split": "train", "clip_key": "2020-0204-150838_068999_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "068999"}, "frames": ["2020-0204-150838_068999_movie_t-3.jpg", "2020-0204-150838_068999_movie_t-2.jpg", "2020-0204-150838_068999_movie_t-1.jpg", "2020-0204-150838_068999_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of lane change", "environment_perception": "An elevated urban expressway with two same-direction lanes and concrete side barriers runs smoothly, the pavement is clean, and traffic is light and steady. A silver box truck ahead in the ego lane shifts left across the dashed line into the adjacent left lane, executing a lane change in front of the ego car and then continuing ahead there, briefly affecting the ego vehicle's pace. A few distant vehicles travel in the left lane without interaction. No salient traffic signs or signals are visible, and no pedestrians or cyclists appear.", "hazard_reasoning": "There is a silver truck lane changing in front of the ego car, from the ego lane to the left lane. The driver should be aware of this maneuver to anticipate the truck's trajectory and maintain a safe following distance."}
{"id": "train_02480", "split": "train", "clip_key": "2020-0214-102601_002902_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "002902"}, "frames": ["2020-0214-102601_002902_movie_t-3.jpg", "2020-0214-102601_002902_movie_t-2.jpg", "2020-0214-102601_002902_movie_t-1.jpg", "2020-0214-102601_002902_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of the pedestrian ahead", "environment_perception": "An urban two-way road with one lane per direction and no median approaches a signalized intersection on a slight curve; the dry pavement looks intact and traffic is light with no vehicle immediately ahead in the ego lane. On the left near the corner, a silver sedan pauses at a gas station exit facing the roadway, potentially merging into the ego lane after the light. On the right side of the intersection, a pedestrian wearing a purple coat and black pants waits by the crosswalk for the pedestrian light to allow crossing, and may step into the near-side crossing. Another pedestrian stands on the left sidewalk near the corner, watching traffic but remaining on the curb. Overhead traffic signals and multiple signs are present.", "hazard_reasoning": "There is a pedestrian wearing a purple coat and black pants and waiting to cross on the right side of the intersection, because they are waiting for a pedestrian crossing light. You should be cautious because the pedestrian may step into the road when the light changes, requiring you to slow down."}
{"id": "train_02481", "split": "train", "clip_key": "2020-0213-143552_047920_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "047920"}, "frames": ["2020-0213-143552_047920_movie_t-3.jpg", "2020-0213-143552_047920_movie_t-2.jpg", "2020-0213-143552_047920_movie_t-1.jpg", "2020-0213-143552_047920_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with the stopped truck", "environment_perception": "An urban two-way road with a single left-hand lane for the ego direction and a narrow planted median appears well paved, with overall light traffic near an intersection. A pedestrian overpass spans the roadway. A white box truck directly ahead in the ego lane is stopped under the overpass, blocking the lane and holding the ego car. In the opposite direction to the right of the median, a red car proceeds straight through the junction and continues past without affecting the ego path.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The driver should stop to avoid a rear-end collision with the stationary truck ahead."}
{"id": "train_02482", "split": "train", "clip_key": "2020-0207-101955_039818_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_039818_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_039818_movie_t-3_augB1.jpg", "2020-0207-101955_039818_movie_t-2_augB1.jpg", "2020-0207-101955_039818_movie_t-1_augB1.jpg", "2020-0207-101955_039818_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of merging motorcycle", "environment_perception": "An urban arterial with two lanes in the same direction runs under an elevated roadway; the pavement is dry and smooth and traffic is light. Ahead, a black motorcycle moves from the right lane into the ego lane directly in front of the car and continues ahead, briefly constraining the ego vehicle's pace. Farther ahead, a small truck stays in the right lane and climbs the ramp at a slower speed. A round 50 speed limit sign is posted on the pedestrian overpass, and overhead guide boards indicate the ramp. Fences line the right side and buildings the left, with no median or obstructions in the lane.", "hazard_reasoning": "There is a black motorcycle lane changing in front of the ego car, from the right lane to the ego lane. It may merge abruptly into your path, requiring you to stay alert to avoid a collision."}
{"id": "train_02483", "split": "train", "clip_key": "2020-0214-145407_014775_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0214-145407_014775_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0214-145407_014775_movie_t-3_augB1.jpg", "2020-0214-145407_014775_movie_t-2_augB1.jpg", "2020-0214-145407_014775_movie_t-1_augB1.jpg", "2020-0214-145407_014775_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial in Japan runs straight with three same-direction lanes and a curbside sidewalk, no center median visible; pavement is dry and smooth, and traffic flows at moderate speed. A white box truck slows directly ahead in the ego lane, constraining the ego car's pace. Another box truck travels slightly ahead in the lane to the right, keeping its lane and moving steadily parallel to the ego vehicle. A small white car in the far-right lane proceeds ahead at a similar speed and continues straight, not merging.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. You should slow down because the truck ahead is reducing speed, posing a risk of collision if you maintain your current speed."}
{"id": "train_02484", "split": "train", "clip_key": "2020-0129-105040_047150_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "047150"}, "frames": ["2020-0129-105040_047150_movie_t-3.jpg", "2020-0129-105040_047150_movie_t-2.jpg", "2020-0129-105040_047150_movie_t-1.jpg", "2020-0129-105040_047150_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs beneath an elevated roadway, with a guardrail median on the right separating oncoming lanes; the pavement is smooth and traffic is light to moderate with steady flow. A white box truck travels ahead in the ego lane at a constant pace, effectively setting the ego vehicle's speed. In the lane to the left ahead, a white van proceeds cautiously while passing activity at the curb. Beyond the guardrail on the right, oncoming cars move steadily in the opposite direction without interacting with the ego's path. Parked vehicles line the left curb, including one car with its rear hatch open, slightly narrowing the usable space along that edge.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02485", "split": "train", "clip_key": "2020-0129-144857_009574_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "009574"}, "frames": ["2020-0129-144857_009574_movie_t-3.jpg", "2020-0129-144857_009574_movie_t-2.jpg", "2020-0129-144857_009574_movie_t-1.jpg", "2020-0129-144857_009574_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road approaches a signalized intersection with good pavement and a painted median; traffic is moderate and briefly queued. A silver van directly ahead in the ego lane is stopped at the line because the overhead signal shows red, holding the ego vehicle. A dark gray hatchback in the adjacent left lane waits beside the ego car at the light. An oncoming white minivan to the right enters the intersection and turns right into a side street, remaining clear of the ego lane.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver must stop to avoid a collision with the stationary vehicle ahead at the red light."}
{"id": "train_02486", "split": "train", "clip_key": "2020-0210-101957_023106_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "023106"}, "frames": ["2020-0210-101957_023106_movie_t-3.jpg", "2020-0210-101957_023106_movie_t-2.jpg", "2020-0210-101957_023106_movie_t-1.jpg", "2020-0210-101957_023106_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck.", "environment_perception": "An urban two-way arterial with multiple lanes and no physical median has smooth pavement and moderate traffic flow. Ahead in the ego lane, a white van moves toward the zebra crossing and slows for the signalized intersection, effectively setting the ego vehicle's pace. A white truck is parked along the left curb within the ego lane near the intersection, partially blocking the lane and narrowing the available space. On the right, an oncoming flatbed truck travels toward the camera in the inner opposing lane near the centerline, adding opposing flow beside the narrowed section. A traffic signal is suspended over the intersection ahead.", "hazard_reasoning": "There is a white trucked parked on the left side of the road, in the ego lane. This parked truck blocks the driving lane and forces the driver to adjust their path, so the driver must manoeuvre carefully around it."}
{"id": "train_02487", "split": "train", "clip_key": "2020-0220-102630_102436_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "102436"}, "frames": ["2020-0220-102630_102436_movie_t-3.jpg", "2020-0220-102630_102436_movie_t-2.jpg", "2020-0220-102630_102436_movie_t-1.jpg", "2020-0220-102630_102436_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial with three same-direction lanes and no median appears dry and well marked, with moderate traffic flowing toward a signalized intersection. A white truck directly ahead in the ego lane accelerates and pulls away through the green light at the junction. A white van in the left lane travels slightly ahead alongside, continuing straight without entering the ego lane. Farther ahead, oncoming vehicles in the right-side lanes pass through the intersection during the same phase. The overhead traffic signal facing the ego direction shows green.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego-car, because of the green traffic light in the intersection ahead. Following the vehicle ahead helps maintain a safe distance and ensures you can react promptly if the light changes."}
{"id": "train_02488", "split": "train", "clip_key": "2020-0207-151349_010974_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "010974"}, "frames": ["2020-0207-151349_010974_movie_t-3.jpg", "2020-0207-151349_010974_movie_t-2.jpg", "2020-0207-151349_010974_movie_t-1.jpg", "2020-0207-151349_010974_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street approaches a wide intersection on a single-lane approach with low railings and planters, dry pavement, and light vehicle traffic. A cyclist in a red jacket rides ahead near the left edge of the lane, moving away from the ego car toward the crosswalk and constraining its pace. Several pedestrians wait on the right side of the crosswalk and start to step out, potentially entering the ego vehicle's path. Another cyclist further ahead crosses the junction from right to left in front of the ego lane. Blue circular signs indicate a mandatory left turn at the intersection.", "hazard_reasoning": "There is a pedestrian wearing a red jacket and cycling on the left side of the road, away from the ego car. The cyclist may suddenly merge into your lane, so slowing down allows you to react safely."}
{"id": "train_02489", "split": "train", "clip_key": "2020-0131-103016_074860_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "074860"}, "frames": ["2020-0131-103016_074860_movie_t-3.jpg", "2020-0131-103016_074860_movie_t-2.jpg", "2020-0131-103016_074860_movie_t-1.jpg", "2020-0131-103016_074860_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A dense urban arterial with three same-direction lanes has dry, well-kept pavement and heavy stop-and-go traffic between tall buildings. A white minivan directly ahead in the ego lane is stopped because traffic is backed up, holding the ego vehicle at a standstill. Farther ahead in the same lane, a tall box truck is also stationary, forming part of the queue that blocks the view forward. To the left, a black taxi in the adjacent lane waits in line parallel to the ego car with minimal spacing. On the right, a silver van and a white box truck queue beside the ego vehicle at very low speed. An overhead blue sign shows multiple straight arrows indicating that the lanes continue ahead.", "hazard_reasoning": "There is a white minivan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. Since the minivan has halted unexpectedly due to congestion, the driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_02490", "split": "train", "clip_key": "titan_clip_770_000462_movie", "source": {"subset": "titan", "scenario": "clip_770", "frame": "000462"}, "frames": ["titan_clip_770_000462_movie_t-3.jpg", "titan_clip_770_000462_movie_t-2.jpg", "titan_clip_770_000462_movie_t-1.jpg", "titan_clip_770_000462_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of pedestrian ahead", "environment_perception": "An urban side street with a single narrow undivided lane runs between buildings; the asphalt is worn but intact and traffic is light and slow. Ahead near the center, a pedestrian in gray walks away from the ego vehicle in the middle of the road, occupying the ego lane and constraining its pace. Farther ahead in the same direction, a white van proceeds slowly in a short queue behind other vehicles. On the right foreground, another pedestrian steps from the curb and walks diagonally toward the lane, briefly encroaching on the path. Parked vehicles line the left curb, including a red car near the ego vehicle, reducing clearance.", "hazard_reasoning": "There is a pedestrian wearing gray clothing, walking away from the ego car, in the middle of the road. The pedestrian's position in the travel lane may not be easily noticed, so the driver should be aware of the pedestrian ahead."}
{"id": "train_02491", "split": "train", "clip_key": "2020-0203-154554_038337_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "038337"}, "frames": ["2020-0203-154554_038337_movie_t-3.jpg", "2020-0203-154554_038337_movie_t-2.jpg", "2020-0203-154554_038337_movie_t-1.jpg", "2020-0203-154554_038337_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated two-lane one-way road runs between tall buildings under a viaduct, with concrete barriers on both sides and smooth pavement; traffic is light to moderate and flows steadily with no oncoming lanes. A large box truck ahead in the left lane, directly in the ego vehicle's path, cruises steadily and sets the ego vehicle's pace. A small white kei van in the adjacent right lane draws alongside then moves ahead, overtaking the left-lane flow without merging. Farther ahead in the right lane another van proceeds at a similar pace, remaining clear of the ego lane. Close barriers and viaduct columns narrow the corridor.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02492", "split": "train", "clip_key": "titan_clip_741_000492_movie", "source": {"subset": "titan", "scenario": "clip_741", "frame": "000492"}, "frames": ["titan_clip_741_000492_movie_t-3.jpg", "titan_clip_741_000492_movie_t-2.jpg", "titan_clip_741_000492_movie_t-1.jpg", "titan_clip_741_000492_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene is an urban intersection on a narrow two-way local road with no median and smooth pavement, and overall traffic is light and slow. Several pedestrians cross ahead from left to right across the ego vehicle's path, walking steadily and briefly blocking forward movement. On the right edge near the corner, a pedestrian wearing a gray suit jacket and gray pants walks toward the ego car along the right side, approaching the vehicle's path. Far ahead in the same direction, a small car proceeds away along the lane without constraining the ego vehicle.", "hazard_reasoning": "A pedestrian wearing a gray suit jacket and gray pants is walking along the right side of the road, toward the ego car. The pedestrian's movement toward the vehicle requires reducing speed to prevent a potential collision."}
{"id": "train_02493", "split": "train", "clip_key": "2020-0214-145407_037937_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "037937"}, "frames": ["2020-0214-145407_037937_movie_t-3.jpg", "2020-0214-145407_037937_movie_t-2.jpg", "2020-0214-145407_037937_movie_t-1.jpg", "2020-0214-145407_037937_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with a single lane in the ego direction runs alongside an elevated expressway; the pavement is smooth and overall traffic is light. A white box truck ahead in the ego lane slows, constraining the ego car's pace. To the right, a black sports car is parked on the shoulder and remains stationary near the lane edge, reducing lateral clearance as the ego vehicle passes. On the left shoulder, a uniformed traffic officer stands beside temporary barricades, monitoring traffic but staying out of the lane. An overhead directional sign is visible ahead.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane. The driver should slow down to maintain a safe following distance given the truck's reduced speed."}
{"id": "train_02494", "split": "train", "clip_key": "2020-0131-135401_072509_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "072509"}, "frames": ["2020-0131-135401_072509_movie_t-3.jpg", "2020-0131-135401_072509_movie_t-2.jpg", "2020-0131-135401_072509_movie_t-1.jpg", "2020-0131-135401_072509_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial carries heavy but moving traffic on smooth dry pavement, with three lanes in the ego direction and no physical median visible. Directly ahead in the ego lane, a black car slows because congestion forms farther up the road, constraining the ego vehicle's pace. To the left, a black van travels nearly alongside and keeps its lane, limiting space for a leftward merge. On the right, a dark minivan runs slightly ahead in the adjacent lane and continues with the flow. Farther forward in the right lane, a blue box truck closes on the queue and brakes, contributing to the slowdown. An overhead gantry sign spans the roadway.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should follow the vehicle ahead to maintain a safe distance and adapt to slower traffic flow."}
{"id": "train_02495", "split": "train", "clip_key": "titan_clip_745_000462_movie", "source": {"subset": "titan", "scenario": "clip_745", "frame": "000462"}, "frames": ["titan_clip_745_000462_movie_t-3.jpg", "titan_clip_745_000462_movie_t-2.jpg", "titan_clip_745_000462_movie_t-1.jpg", "titan_clip_745_000462_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street lined with shops and utility poles has no median, the pavement is dry and smooth, and traffic is light with no moving vehicles visible. Ahead in the ego lane, a man in a black T-shirt and black pants carrying a shoulder bag walks away from the car along the center, directly occupying the vehicle's path. Farther ahead, another pedestrian continues away near the middle of the road and may remain in the ego lane. On the right edge by a storefront, several pedestrians stand close to the curb and edge forward, so they may step into the lane. A white van is parked along the left curb just ahead, reducing clearance. A yellow pedestrian caution sign is posted on the right.", "hazard_reasoning": "There is a big man wearing a black T-shirt and black pants, carrying a shoulder bag, and walking in front of the ego car, away from the ego car. You should carefully manoeuvre around the pedestrian to maintain safe clearance and avoid collision."}
{"id": "train_02496", "split": "train", "clip_key": "titan_clip_1311_000540_movie", "source": {"subset": "titan", "scenario": "clip_1311", "frame": "000540"}, "frames": ["titan_clip_1311_000540_movie_t-3.jpg", "titan_clip_1311_000540_movie_t-2.jpg", "titan_clip_1311_000540_movie_t-1.jpg", "titan_clip_1311_000540_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban residential street with a single two-way lane and no median runs straight ahead on smooth pavement, and there are no other vehicles so traffic is light. A pedestrian wearing black walks ahead along the left edge away from the ego vehicle, staying near the travel lane and reducing lateral clearance. On the right, orange cones and tape beside a building and a red vending machine narrow the shoulder but do not block the lane. A yellow school-route warning sign is mounted on a pole at the left.", "hazard_reasoning": "There is a pedestrian wearing a black dress and black shirt and walking on the left side of the road away from the ego car. You need to carefully manoeuvre around the pedestrian to avoid collision."}
{"id": "train_02497", "split": "train", "clip_key": "2020-0228-102841_083456_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "083456"}, "frames": ["2020-0228-102841_083456_movie_t-3.jpg", "2020-0228-102841_083456_movie_t-2.jpg", "2020-0228-102841_083456_movie_t-1.jpg", "2020-0228-102841_083456_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between tall buildings, with guardrails along the sidewalks and smooth dry pavement; traffic is moderate and slows near a pedestrian overpass. A white box truck directly ahead in the ego lane slows because of traffic congestion ahead, constraining the ego car's pace. A white van slightly ahead in the left lane proceeds with the same slow flow without changing lanes. A dark sedan farther ahead in the right lane brakes with the queue and remains in its lane. A pedestrian footbridge spans the road and kerbside fencing lines the sidewalks, with no unusual obstacles visible.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a potential collision due to the slowed traffic."}
{"id": "train_02498", "split": "train", "clip_key": "2020-0131-135401_023937_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "023937"}, "frames": ["2020-0131-135401_023937_movie_t-3.jpg", "2020-0131-135401_023937_movie_t-2.jpg", "2020-0131-135401_023937_movie_t-1.jpg", "2020-0131-135401_023937_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road passes beneath a pedestrian overpass, with two same-direction lanes and cones narrowing the left shoulder; pavement is dry and traffic is moderate. A silver hatchback is stopped directly ahead in the ego lane, waiting to turn left at the junction and blocking the lane. In the adjacent right lane, a white box truck continues straight through the intersection, allowing traffic to bypass the stopped car. Farther ahead, several vehicles move across from right to left through the intersection, which the hatchback yields to before turning. Road work cones line both sides and reduce space at the curb.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car in the ego lane, because it is waiting to turn left. The driver should stop to avoid rear-ending the halted vehicle at the red light."}
{"id": "train_02499", "split": "train", "clip_key": "2020-0204-150838_068834_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "068834"}, "frames": ["2020-0204-150838_068834_movie_t-3.jpg", "2020-0204-150838_068834_movie_t-2.jpg", "2020-0204-150838_068834_movie_t-1.jpg", "2020-0204-150838_068834_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck changing lanes", "environment_perception": "An elevated urban expressway with two same-direction lanes and concrete barriers on both sides has dry, smooth pavement and light to moderate flow. A silver box truck directly ahead moves left, changing from the ego lane into the left lane in front of the ego vehicle and briefly narrowing the headway. A white flatbed truck travels in the left lane alongside and slightly behind the ego vehicle at similar speed, affecting the available gap for that lane change. Farther ahead in the left lane, another truck continues straight and helps set the cruising pace. No signals or unusual signage are salient, and no obstacles are visible.", "hazard_reasoning": "There is a silver truck lane changing in front of the ego car, from the ego lane to the left lane. The truck is merging ahead of the ego vehicle, which may require the driver to anticipate the lane change and adjust speed or position accordingly."}
{"id": "train_02500", "split": "train", "clip_key": "titan_clip_1082_000288_movie", "source": {"subset": "titan", "scenario": "clip_1082", "frame": "000288"}, "frames": ["titan_clip_1082_000288_movie_t-3.jpg", "titan_clip_1082_000288_movie_t-2.jpg", "titan_clip_1082_000288_movie_t-1.jpg", "titan_clip_1082_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian on road", "environment_perception": "An urban commercial street with a narrow carriageway lacking a centerline curves gently to the right; the asphalt looks smooth and traffic is light with no moving vehicles. Ahead slightly left, a woman wearing a cream blouse and short black dress walks diagonally across toward the right and may enter the ego lane. On the near left edge, another pedestrian walks along the roadway toward the camera close to the curb, constraining space. A white box truck is stopped at the left side ahead, narrowing the usable lane and obscuring the view beyond. Farther ahead a person moves away along the right curb. Rows of parked bicycles line the left, forming a continuous roadside obstacle.", "hazard_reasoning": "There is a lady wearing a cream blouse with a short black dress walking on the left side of the road. Since she is walking on the roadway rather than the sidewalk, the driver should be aware of her presence to avoid a collision."}
{"id": "train_02501", "split": "train", "clip_key": "titan_clip_733_000588_movie", "source": {"subset": "titan", "scenario": "clip_733", "frame": "000588"}, "frames": ["titan_clip_733_000588_movie_t-3.jpg", "titan_clip_733_000588_movie_t-2.jpg", "titan_clip_733_000588_movie_t-1.jpg", "titan_clip_733_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential street, narrow two-way with no centerline, is flanked by buildings and planters; the pavement looks smooth and traffic is light with no vehicles ahead or oncoming. A pedestrian wearing a cap and shorts runs toward the ego car along the right side of the lane in front of it because there is no sidewalk, occupying the edge of the ego lane and potentially entering its path. A child pedestrian warning sign is visible on the left. A parked bicycle and potted plants line the right verge without intruding into the lane.", "hazard_reasoning": "There is a pedestrian wearing a cap and shorts, running in front of and toward the ego car, on the right side of the lane, because there is no sidewalk. Since the child is running toward the vehicle on the roadway without a sidewalk, the driver should slow down to avoid a collision."}
{"id": "train_02502", "split": "train", "clip_key": "titan_clip_111_000588_movie", "source": {"subset": "titan", "scenario": "clip_111", "frame": "000588"}, "frames": ["titan_clip_111_000588_movie_t-3.jpg", "titan_clip_111_000588_movie_t-2.jpg", "titan_clip_111_000588_movie_t-1.jpg", "titan_clip_111_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on road lane", "environment_perception": "An urban neighborhood street with a single narrow lane runs alongside a building wrapped in green construction sheeting; there is no divider and the asphalt looks smooth, with no vehicular traffic visible. Ahead on the right, a pedestrian in a white shirt and black shorts walks away within the lane toward the adjacent sidewalk, briefly occupying the ego vehicle's path. Construction barriers and poles line the right curb near a recessed garage opening, and no other notable road users or signals appear.", "hazard_reasoning": "There is a male pedestrian, wearing a white shirt and black shorts, walking on the right side of the road, away from the ego-car, in the ego lane, because he is moving towards a sidewalk. The pedestrian is walking in the vehicle's lane and may step into its path, so the driver should remain alert."}
{"id": "train_02503", "split": "train", "clip_key": "titan_clip_1305_000078_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1305_000078_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1305_000078_movie_t-3_augB1.jpg", "titan_clip_1305_000078_movie_t-2_augB1.jpg", "titan_clip_1305_000078_movie_t-1_augB1.jpg", "titan_clip_1305_000078_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow undivided lane and smooth pavement is shown, with light, slow traffic and no moving vehicles visible. Ahead in the center of the lane, a pedestrian in a white shirt and gray pants pulls a suitcase and walks away from the ego vehicle in the middle of the road, occupying the path and controlling the pace. On the right edge, a black minivan stands stopped along the curb beside shops, narrowing the usable lane near the pedestrian. Farther ahead, several other pedestrians walk along and across the roadway near storefronts on both sides, close to the ego lane.", "hazard_reasoning": "There is a pedestrian wearing gray pant and white shirt, pulling a suitcase, and walking away from the ego car in the middle of the road. The pedestrian is positioned in the travel lane and may continue walking unpredictably, so the driver should slow down to ensure enough reaction time."}
{"id": "train_02504", "split": "train", "clip_key": "2020-0220-102630_035048_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "035048"}, "frames": ["2020-0220-102630_035048_movie_t-3.jpg", "2020-0220-102630_035048_movie_t-2.jpg", "2020-0220-102630_035048_movie_t-1.jpg", "2020-0220-102630_035048_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop; taxi is stopped ahead.", "environment_perception": "An urban multi-lane street approaches a signalized intersection, with two same-direction lanes and no median; the pavement looks smooth and traffic is moderate. A yellow taxi directly ahead in the ego lane is stopped at first, then begins to roll as the light has just turned green, briefly controlling the ego-car's pace. A large box truck in the adjacent right lane runs slightly ahead and creeps forward through the junction while staying in its lane beside the ego vehicle. Pedestrians on the left sidewalk stand near the corner. The overhead signal shows green, and roadside signs prohibit stopping or parking.", "hazard_reasoning": "There is a yellow taxi that has stopped in front of the ego-car, in the ego lane, because of a traffic light that has just changed to green. The taxi's stationary position in the ego lane creates a collision risk, so the driver should stop immediately."}
{"id": "train_02505", "split": "train", "clip_key": "2020-0220-151845_052432_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "052432"}, "frames": ["2020-0220-151845_052432_movie_t-3.jpg", "2020-0220-151845_052432_movie_t-2.jpg", "2020-0220-151845_052432_movie_t-1.jpg", "2020-0220-151845_052432_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated two-lane road runs beneath an expressway, bounded by concrete barriers; the dry pavement looks smooth and traffic is light. The ego vehicle proceeds in the left lane on a gentle right curve. A red truck directly ahead in the ego lane slows, limiting the ego car's pace. In the adjacent right lane, a small silver van is slightly ahead and continues forward, gradually pulling away without affecting the ego lane. On a parallel elevated roadway to the right, a larger truck travels independently, separated by barriers and not interacting. A blue guidance sign with lane arrows is visible on the left.", "hazard_reasoning": "There is a red truck slowing in the ego lane, in front of the ego car. You should slow down to maintain safe distance and avoid a rear-end collision."}
{"id": "train_02506", "split": "train", "clip_key": "2020-0207-151349_009865_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "009865"}, "frames": ["2020-0207-151349_009865_movie_t-3.jpg", "2020-0207-151349_009865_movie_t-2.jpg", "2020-0207-151349_009865_movie_t-1.jpg", "2020-0207-151349_009865_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of the cyclist ahead", "environment_perception": "An urban two-way street with one lane in each direction runs between apartments and a park, the pavement smooth and traffic light throughout. A cyclist rides ahead in the ego lane, moving away near the left curb, so the car continues behind at the cyclist's pace. On the right sidewalk, several pedestrians walk along the block near the crosswalk and remain off the roadway. No other moving vehicles are visible, and there is no opposing traffic in view. Parked bicycles line the right curb while bollards protect the left sidewalk, leaving the lane clear.", "hazard_reasoning": "There is a cyclist cycling in front of, and away from, the ego car. The cyclist's unpredictable movement requires caution to maintain a safe distance and avoid collision."}
{"id": "train_02507", "split": "train", "clip_key": "2020-0227-104226_033356_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-104226_033356_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-104226_033356_movie_t-3_augB1.jpg", "2020-0227-104226_033356_movie_t-2_augB1.jpg", "2020-0227-104226_033356_movie_t-1_augB1.jpg", "2020-0227-104226_033356_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way arterial with two lanes in the ego direction and an orange painted centerline passes shops and utility poles; the pavement is dry and traffic appears moderate. Ahead, a white box truck in the ego lane moves left and changes into the adjacent left lane directly in front of the ego car, momentarily constraining the ego's pace. To the right of the centerline, a white van approaches as oncoming traffic, continuing straight and remaining separated from the ego lane. On a separated side lane to the far left, several buses travel the opposite way behind a railing and do not interact.", "hazard_reasoning": "There is a white truck lane changing in front of the ego car, from the ego lane to the left lane. The truck's maneuver may reduce the available space in the current lane, so the driver should follow the vehicle ahead to maintain a safe distance and avoid a sudden collision."}
{"id": "train_02508", "split": "train", "clip_key": "2020-0207-151349_087439_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "087439"}, "frames": ["2020-0207-151349_087439_movie_t-3.jpg", "2020-0207-151349_087439_movie_t-2.jpg", "2020-0207-151349_087439_movie_t-1.jpg", "2020-0207-151349_087439_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene unfolds under an elevated expressway on a smooth, multi-lane arterial with guardrails along both sides; traffic is light. Pedestrian overpasses and viaduct pillars span the road as the ego vehicle proceeds in the left-side lane, and no oncoming lanes are visible. A white work truck is on the far right beyond a barrier in a side lane, stationary as the ego vehicle passes, and it does not enter the ego lane. Merge arrows on the pavement ahead indicate an entry from the right.", "hazard_reasoning": "No caption provided and no hazards are visible in the scene, so no warning is necessary."}
{"id": "train_02509", "split": "train", "clip_key": "2020-0228-102841_073204_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "073204"}, "frames": ["2020-0228-102841_073204_movie_t-3.jpg", "2020-0228-102841_073204_movie_t-2.jpg", "2020-0228-102841_073204_movie_t-1.jpg", "2020-0228-102841_073204_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to the turning van", "environment_perception": "An urban signalized intersection on a two-way road without a median has smooth pavement and moderate traffic moving slowly near the junction. Ahead in the ego lane, a white van turns left mid-intersection, crossing our path and constraining progress. On the far side, a white box truck is stopped by the right curb just beyond the crosswalk, narrowing the corner. At the near-left corner, several pedestrians stand outside a shop, waiting to cross. Overhead traffic signals are visible.", "hazard_reasoning": "There is a white van turning left in the ego lane, in the middle of the intersection. The driver should yield to the turning van because it is crossing the ego lane and may cause a collision if not given right of way."}
{"id": "train_02510", "split": "train", "clip_key": "2020-0220-102630_098656_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "098656"}, "frames": ["2020-0220-102630_098656_movie_t-3.jpg", "2020-0220-102630_098656_movie_t-2.jpg", "2020-0220-102630_098656_movie_t-1.jpg", "2020-0220-102630_098656_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement runs straight under an overhead gantry, with a metal fence median on the right separating opposing traffic, and traffic moves at a steady, moderate pace. A small white truck with a tarpaulin-covered load is ahead in the ego lane driving away, increasing the gap slightly. To the left, a city bus in the adjacent lane travels a bit faster and overtakes without merging. On a separated roadway to the right, a large tanker truck passes behind the fence and does not interact. An overhead blue sign indicates Route 4 destinations: Soka 4 km, Kasukabe 18 km, and Utsunomiya 94 km.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The truck's movement indicates that traffic ahead is starting to flow; you should start moving promptly to maintain safe following distance and avoid disruptions to traffic."}
{"id": "train_02511", "split": "train", "clip_key": "titan_clip_955_000480_movie", "source": {"subset": "titan", "scenario": "clip_955", "frame": "000480"}, "frames": ["titan_clip_955_000480_movie_t-3.jpg", "titan_clip_955_000480_movie_t-2.jpg", "titan_clip_955_000480_movie_t-1.jpg", "titan_clip_955_000480_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban shopping street with a single undivided lane and worn but serviceable pavement extends ahead, and traffic is very light with no moving vehicles visible. Numerous parked bicycles and storefront displays line both sides, narrowing the usable roadway. On the right side ahead, a pedestrian wearing black pants and carrying a backpack walks away from the ego-car along the curb, moving in the same direction and staying close to the travel lane, which effectively sets a cautious pace for the vehicle. No traffic signals or speed signs are clearly visible in the scene.", "hazard_reasoning": "There is a pedestrian wearing black pants, carrying a backpack, and walking away from the ego-car on the right side of the road. The pedestrian may step into the lane unexpectedly, so the driver should manoeuvre carefully to maintain a safe distance and avoid a collision."}
{"id": "train_02512", "split": "train", "clip_key": "2020-0205-103411_028360_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "028360"}, "frames": ["2020-0205-103411_028360_movie_t-3.jpg", "2020-0205-103411_028360_movie_t-2.jpg", "2020-0205-103411_028360_movie_t-1.jpg", "2020-0205-103411_028360_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a wide painted splitter on the left has smooth pavement and light, steady traffic. Ahead in the ego lane a blue sedan slows directly in front of the ego car, briefly constraining pace. Slightly to the right a white van in the adjacent lane continues straight at a steady speed, remaining just ahead. Farther right a white car follows the right-curving lane and proceeds through the junction without affecting the ego path. A pedestrian footbridge spans the road ahead, and a signal post stands on the right though its aspect is not discernible.", "hazard_reasoning": "There is a blue sedan slowing in the ego lane, in front of the ego car. Drivers should slow down because the vehicle ahead is decelerating, increasing the risk of a rear-end collision if speed is not reduced."}
{"id": "train_02513", "split": "train", "clip_key": "2020-0204-150838_034703_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "034703"}, "frames": ["2020-0204-150838_034703_movie_t-3.jpg", "2020-0204-150838_034703_movie_t-2.jpg", "2020-0204-150838_034703_movie_t-1.jpg", "2020-0204-150838_034703_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban avenue with multiple lanes in each direction and no physical median stretches ahead; the pavement is dry and intact, and traffic flows slowly in queues. Directly ahead in the ego lane, a white van slows due to congestion ahead, holding the ego vehicle to its pace. In the adjacent lane to the left, a black van proceeds alongside at low speed, limiting room for the ego vehicle to merge. In the opposite lanes to the right, a white mini-van approaches and passes as oncoming traffic, remaining separate from the ego path. A box truck stands at the left curb near a crosswalk, creating a narrow shoulder.", "hazard_reasoning": "There is a white van slowing down in the ego lane because of traffic congestion ahead. The van's reduction in speed indicates the traffic ahead is congested, so you should slow down to maintain a safe following distance."}
{"id": "train_02514", "split": "train", "clip_key": "titan_clip_83_000588_movie", "source": {"subset": "titan", "scenario": "clip_83", "frame": "000588"}, "frames": ["titan_clip_83_000588_movie_t-3.jpg", "titan_clip_83_000588_movie_t-2.jpg", "titan_clip_83_000588_movie_t-1.jpg", "titan_clip_83_000588_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban commercial street with trees lines a narrow two-way road without a median, the pavement smooth and traffic moving slowly amid curbside parking. On the right ahead, a white box truck is stopped at the curb with its rear open and a worker beside it unloading, occupying part of the lane and narrowing the passage. On the left, a white van near the camera and a black microvan ahead remain parked, keeping the ego vehicle near the center of the road. Farther ahead in the opposing lane, several cars approach in a line, limiting room to pass the obstruction.", "hazard_reasoning": "There is a white truck parked on the right side of the road, in the ego lane, because it is being unloaded. This obstruction reduces the available driving lane and may hide pedestrians or obstacles, so the driver should manoeuvre carefully around it to avoid collisions."}
{"id": "train_02515", "split": "train", "clip_key": "2020-0220-102630_042905_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "042905"}, "frames": ["2020-0220-102630_042905_movie_t-3.jpg", "2020-0220-102630_042905_movie_t-2.jpg", "2020-0220-102630_042905_movie_t-1.jpg", "2020-0220-102630_042905_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs under an elevated structure with smooth pavement and light traffic flowing away from the intersection. There is no visible median, just lane markings, and the scene remains consistent as the view advances. A white box truck ahead in the ego lane drives away from the camera, effectively setting the pace as it continues straight. To its left, a dark van ahead proceeds in its lane at a similar speed without merging. On the left sidewalk, several pedestrians walk near the crosswalk and linger at the curb, potentially preparing to cross. A couple of cars are parked along the right curb under the viaduct, and the support pillars create partial sightlines to the right.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The truck obstructs the view ahead, so the driver should be aware of potential hidden obstacles beyond it."}
{"id": "train_02516", "split": "train", "clip_key": "titan_clip_162_000546_movie", "source": {"subset": "titan", "scenario": "clip_162", "frame": "000546"}, "frames": ["titan_clip_162_000546_movie_t-3.jpg", "titan_clip_162_000546_movie_t-2.jpg", "titan_clip_162_000546_movie_t-1.jpg", "titan_clip_162_000546_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "The vehicle approaches a small urban intersection on a two-way road with one narrow lane per direction, no median, smooth asphalt, and light traffic. No same-direction or oncoming cars are ahead as the cross street runs right to left. A cyclist in the left foreground rides across the zebra crossing from left to right directly ahead of the ego lane, occupying the path. A woman with an umbrella near the center-right walks leftward across the same crosswalk ahead, also within the ego vehicle's path. On the far right at the corner, a dark van stands at the curb beside a convenience store near the crosswalk. Signal equipment is present, but its aspect is not discernible.", "hazard_reasoning": "No immediate hazards are present so the driver can continue safely."}
{"id": "train_02517", "split": "train", "clip_key": "titan_clip_172_000090_movie", "source": {"subset": "titan", "scenario": "clip_172", "frame": "000090"}, "frames": ["titan_clip_172_000090_movie_t-3.jpg", "titan_clip_172_000090_movie_t-2.jpg", "titan_clip_172_000090_movie_t-1.jpg", "titan_clip_172_000090_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban alley with a single shared lane and no divider runs between shopfronts; the asphalt is smooth and dry, and motor traffic is absent while pedestrian activity is light. Far ahead in the lane, a small group of pedestrians walks away along the center, occupying the path and setting the pace. Near the right curb beside a restaurant, a person bends over and edges into the roadway while handling items, briefly narrowing the passage. A red triangular stop sign is visible farther ahead, with stop markings on the pavement. Storefront signs and blue bins protrude from the right side, creating roadside obstacles.", "hazard_reasoning": "There is a fenced enclosure on the left side of the road. This enclosure reduces the available clearance on that side, so the driver should carefully manoeuvre to avoid collision."}
{"id": "train_02518", "split": "train", "clip_key": "2020-0207-101955_070553_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "070553"}, "frames": ["2020-0207-101955_070553_movie_t-3.jpg", "2020-0207-101955_070553_movie_t-2.jpg", "2020-0207-101955_070553_movie_t-1.jpg", "2020-0207-101955_070553_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the hatchback", "environment_perception": "An urban divided arterial with two same-direction lanes and a planted median is shown; the pavement looks smooth and traffic is moderate with a short queue at an intersection. A white hatchback directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle. Ahead-left, a white box truck in the adjacent lane is also stationary for the same light and partially obscures the view of the junction. Farther ahead, several trucks line up beyond the vehicles in front, keeping the flow slow. Overhead traffic signals display red, and a fenced median with shrubs separates a side roadway on the right.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane because of a red traffic light ahead. The stopped hatchback at the red light requires the driver to stop behind it to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_02519", "split": "train", "clip_key": "2020-0205-152530_041950_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "041950"}, "frames": ["2020-0205-152530_041950_movie_t-3.jpg", "2020-0205-152530_041950_movie_t-2.jpg", "2020-0205-152530_041950_movie_t-1.jpg", "2020-0205-152530_041950_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided boulevard with three same-direction lanes runs straight on smooth pavement, with a landscaped median separating oncoming lanes and light, steady traffic. Ahead in the ego lane, a white box truck slows briefly with no congestion visible ahead, momentarily setting our pace. In the adjacent right lane, a dark hatchback moves slightly faster and pulls ahead without edging into our lane. At the right curb, a black minivan stands stopped near the curb lane and may merge into traffic.", "hazard_reasoning": "There is a white truck slowing in the ego lane due to no traffic congestion ahead, in front of the ego car. The truck's unexpected deceleration could require the driver to reduce speed to maintain a safe following distance."}
{"id": "train_02520", "split": "train", "clip_key": "2020-0214-145407_005655_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "005655"}, "frames": ["2020-0214-145407_005655_movie_t-3.jpg", "2020-0214-145407_005655_movie_t-2.jpg", "2020-0214-145407_005655_movie_t-1.jpg", "2020-0214-145407_005655_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane intersection with three same-direction lanes and no median is shown; the pavement is smooth and traffic is moderate, moving under a green light. A silver van directly ahead in the ego lane pulls away through the intersection as the light stays green. A white van ahead in the lane to the right continues straight at a similar pace without encroaching on the ego lane. A dark minivan ahead to the left creeps forward in its lane, remaining parallel. No obstacles or work zones are visible.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car, because of the green traffic lights. Following the vehicle ahead helps maintain safe headway and navigate the intersection smoothly."}
{"id": "train_02521", "split": "train", "clip_key": "2020-0207-151349_009907_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "009907"}, "frames": ["2020-0207-151349_009907_movie_t-3.jpg", "2020-0207-151349_009907_movie_t-2.jpg", "2020-0207-151349_009907_movie_t-1.jpg", "2020-0207-151349_009907_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction runs between mid-rise buildings and a tree-lined wall, with no median and smooth asphalt; traffic appears light. A motorbike ahead in the ego lane continues straight at a steady pace, occupying the path and setting the speed. Several pedestrians on the right sidewalk near a building walk along and stand close to the curb by the crosswalk, adjacent to the roadway. No oncoming vehicles are visible. A zebra crosswalk spans the foreground. Parked cars line the right side, and bollards protect the left sidewalk.", "hazard_reasoning": "No hazards are present; the road is clear and no immediate action is required, so the driver can maintain normal driving."}
{"id": "train_02522", "split": "train", "clip_key": "titan_clip_1363_000348_movie", "source": {"subset": "titan", "scenario": "clip_1363", "frame": "000348"}, "frames": ["titan_clip_1363_000348_movie_t-3.jpg", "titan_clip_1363_000348_movie_t-2.jpg", "titan_clip_1363_000348_movie_t-1.jpg", "titan_clip_1363_000348_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban scene with mid-rise buildings lines a narrow two-way road without a median; the pavement is smooth with manhole covers, and traffic is light as the approach leads to an unsignalized zebra crossing and a side street on the right. A small white van ahead in the same direction continues away through the crossing, slightly setting the pace. On the left sidewalk, a pedestrian carrying a handbag stands close to the curb by the crosswalk and faces the ego vehicle, where she could enter the ego lane. On the right sidewalk near a building entrance, another pedestrian walks parallel to the road past the crosswalk without stepping into the street.", "hazard_reasoning": "There is a pedestrian wearing white pants and a black shirt, carrying a handbag, and walking toward the ego car, on the left side of the road. The driver should stop because the pedestrian may enter the lane and risk collision if the vehicle continues moving."}
{"id": "train_02523", "split": "train", "clip_key": "2020-0204-103442_040548_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "040548"}, "frames": ["2020-0204-103442_040548_movie_t-3.jpg", "2020-0204-103442_040548_movie_t-2.jpg", "2020-0204-103442_040548_movie_t-1.jpg", "2020-0204-103442_040548_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid colliding with bus.", "environment_perception": "An urban multi-lane road runs under an elevated structure with smooth asphalt and dashed lane markings; traffic is heavy and largely stopped in the same direction, with a guardrail on the right separating the carriageway. A white highway bus is directly ahead in the ego lane and stands still, blocking the path as stated. To the left, a large box truck in the adjacent lane is alongside and stationary, preventing an easy merge. To the right, a small gray car in the next lane is slightly ahead and either stopped or creeping, also limiting room to change lanes. No signals or speed signs are clearly visible.", "hazard_reasoning": "There is a white bus stopped in the ego lane in front of the ego car. The driver should stop to avoid colliding with the stationary bus in the lane."}
{"id": "train_02524", "split": "train", "clip_key": "titan_clip_427_000330_movie", "source": {"subset": "titan", "scenario": "clip_427", "frame": "000330"}, "frames": ["titan_clip_427_000330_movie_t-3.jpg", "titan_clip_427_000330_movie_t-2.jpg", "titan_clip_427_000330_movie_t-1.jpg", "titan_clip_427_000330_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian at crosswalk", "environment_perception": "An urban two-way street with one narrow lane per direction and no median has smooth pavement and light traffic as the ego vehicle approaches a marked crosswalk by apartment buildings. Ahead at the crosswalk, a man in green pants moves from the right to the left across the lane, occupying the zebra and constraining the ego vehicle's pace. On the right sidewalk at the crosswalk, a man in a black suit carrying a briefcase approaches the curb and may enter the lane. Far ahead in the same direction, a white car continues along the road with ample distance from the ego vehicle. A pedestrian-crossing sign stands on the right, drawing attention to the crossing.", "hazard_reasoning": "There is a man wearing a black suit, carrying a briefcase, and approaching the crosswalk from the sidewalk on the right side of the road, because he is hurrying to cross the road. The pedestrian may step onto the road suddenly, so the driver should yield to allow safe crossing."}
{"id": "train_02525", "split": "train", "clip_key": "2020-0225-145150_026618_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-145150_026618_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-145150_026618_movie_t-3_augB1.jpg", "2020-0225-145150_026618_movie_t-2_augB1.jpg", "2020-0225-145150_026618_movie_t-1_augB1.jpg", "2020-0225-145150_026618_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road carries light to moderate traffic on dry pavement, with a wide hatched median to the right separating oncoming lanes. A blue truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. A scooter travels ahead in the left curb lane, gradually pulling away while remaining in its lane. In the adjacent right lane, another blue truck moves slightly faster and could merge ahead after the median taper. No-parking signs are posted along the left sidewalk, and a white box truck is parked at the far right curb.", "hazard_reasoning": "There is a blue truck slowing in front of the ego car, in the ego lane. The driver should reduce speed now to maintain a safe following distance and avoid a rear-end collision under sudden braking."}
{"id": "train_02526", "split": "train", "clip_key": "titan_clip_633_000234_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_633_000234_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_633_000234_movie_t-3_augB1.jpg", "titan_clip_633_000234_movie_t-2_augB1.jpg", "titan_clip_633_000234_movie_t-1_augB1.jpg", "titan_clip_633_000234_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban residential street with a single undivided lane runs between low buildings and greenery; the pavement is smooth and there is no visible vehicular traffic, so flow is light. Two pedestrians ahead walk in the middle of the road away from the camera, staying in the ego lane and potentially limiting progress. On the right, several pedestrians move along the sidewalk behind bollards, walking parallel to traffic and not stepping into the carriageway. On the left, a pedestrian walks away along the curb on the sidewalk, remaining clear of the lane.", "hazard_reasoning": "There are two pedestrians walking in the middle of the road, away from the ego car. The driver should slow down to maintain control and be prepared to stop if they move into the vehicle's path."}
{"id": "train_02527", "split": "train", "clip_key": "titan_clip_210_000402_movie", "source": {"subset": "titan", "scenario": "clip_210", "frame": "000402"}, "frames": ["titan_clip_210_000402_movie_t-3.jpg", "titan_clip_210_000402_movie_t-2.jpg", "titan_clip_210_000402_movie_t-1.jpg", "titan_clip_210_000402_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian.", "environment_perception": "A narrow urban street with closely spaced buildings lacks a centerline, serving as a single mixed-traffic lane on smooth pavement with light, steady flow. A white van is parked along the left curb and slightly intrudes into the lane, narrowing the passage for the ego vehicle. On the right side ahead, a pedestrian in a white shirt and black pants walks toward the ego car along the edge of the roadway, and may step into the travel path. Far ahead, a small car continues away in the same lane at a steady pace, not constraining the ego vehicle.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the right side of the road, towards the ego car. The pedestrian may step into the vehicle's path, so the driver should be aware and prepared to respond."}
{"id": "train_02528", "split": "train", "clip_key": "2020-0203-114632_008454_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "008454"}, "frames": ["2020-0203-114632_008454_movie_t-3.jpg", "2020-0203-114632_008454_movie_t-2.jpg", "2020-0203-114632_008454_movie_t-1.jpg", "2020-0203-114632_008454_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way intersection with a single lane per direction and no median is seen, with dry, slightly worn pavement and light traffic; the signal ahead shows green. A white van directly ahead in the ego lane begins to accelerate through the intersection on the green, controlling the ego vehicle's pace. On the right, a pedestrian stands at the edge of the crosswalk and does not enter the lane. A single orange cone sits on the right shoulder near the corner without affecting traffic.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02529", "split": "train", "clip_key": "titan_clip_1379_000258_movie", "source": {"subset": "titan", "scenario": "clip_1379", "frame": "000258"}, "frames": ["titan_clip_1379_000258_movie_t-3.jpg", "titan_clip_1379_000258_movie_t-2.jpg", "titan_clip_1379_000258_movie_t-1.jpg", "titan_clip_1379_000258_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street with no median runs under elevated structures; the wet pavement is intact and traffic is light with no moving vehicles nearby. A brown cement mixer is parked on the left ahead in front of the ego-vehicle because of the construction zone, encroaching into the travel lane and restricting passage. A large green construction vehicle is also parked along the left curb beside the ego-vehicle, taped off with orange cones and further narrowing the lane. A pedestrian stands on the right sidewalk near the crosswalk, waiting alongside the roadway without stepping into the street. Cones and sheeting clearly mark the work zone.", "hazard_reasoning": "There is a brown cement mixer parked on the left side of the road, in front of the ego-car, because of the construction zone. You should carefully manoeuvre around the parked cement mixer because it obstructs the left lane and reduces space for safe passage."}
{"id": "train_02530", "split": "train", "clip_key": "2020-0213-143552_004815_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "004815"}, "frames": ["2020-0213-143552_004815_movie_t-3.jpg", "2020-0213-143552_004815_movie_t-2.jpg", "2020-0213-143552_004815_movie_t-1.jpg", "2020-0213-143552_004815_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked truck ahead", "environment_perception": "An urban two-way road with multiple lanes per direction and no median is shown; the pavement looks smooth and same-direction flow is light to moderate. Ahead in the left curb lane, a truck is parked in front of the ego vehicle, blocking the ego lane. To the right, several vans and cars travel forward in the adjacent lane, which may constrain merging around the obstruction. Oncoming lanes are lightly occupied farther left. A pedestrian on the left sidewalk near a shop walks along the curb and does not enter the roadway. A green-painted bicycle lane runs along the left curb.", "hazard_reasoning": "There is a truck parked in front of the ego car, in the ego lane. You should be cautious because the parked truck may block your path ahead, requiring early action to avoid collision."}
{"id": "train_02531", "split": "train", "clip_key": "2020-0210-155354_018562_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "018562"}, "frames": ["2020-0210-155354_018562_movie_t-3.jpg", "2020-0210-155354_018562_movie_t-2.jpg", "2020-0210-155354_018562_movie_t-1.jpg", "2020-0210-155354_018562_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane each way runs between mid-rise buildings, marked by a solid yellow centerline and smooth pavement; traffic is light and the oncoming lane is mostly clear as the road rises gently toward a signalized intersection. A white van ahead in the ego lane pulls away through the intersection, accelerating under a green light and momentarily setting the ego vehicle's pace. On the right near the far corner, a pedestrian walks by the crosswalk at the curb, close to but not entering the roadway, so they pose minimal interaction. On the left sidewalk, another pedestrian moves past storefronts behind a fence, remaining separate from traffic. A parked car at the left curb near the crosswalk slightly narrows the edge of the lane.", "hazard_reasoning": "There is a white van driving away from the ego car, in the ego lane in front of the ego car, because the light is green. Follow the vehicle ahead to maintain a safe distance and be prepared for pedestrians crossing."}
{"id": "train_02532", "split": "train", "clip_key": "titan_clip_607_000570_movie", "source": {"subset": "titan", "scenario": "clip_607", "frame": "000570"}, "frames": ["titan_clip_607_000570_movie_t-3.jpg", "titan_clip_607_000570_movie_t-2.jpg", "titan_clip_607_000570_movie_t-1.jpg", "titan_clip_607_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban residential two-way road without a centerline stretches ahead on dry, slightly worn asphalt, and traffic is light. On the right edge near the ego path, a pedestrian in a green shirt holds a hand cart and stands by the roadway, reducing the available width as the vehicle approaches. Farther ahead the street appears clear of moving vehicles. A no-parking sign is posted on the left side of the road. Parked scooters and curbside bins line both sides near the camera, adding to the confined feel of the lane.", "hazard_reasoning": "There is a pedestrian wearing a green shirt, holding a cart, standing on the right side of the road. The driver should carefully manoeuvre around the pedestrian because they may step into the lane while pushing the cart."}
{"id": "train_02533", "split": "train", "clip_key": "2020-0204-103442_027693_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "027693"}, "frames": ["2020-0204-103442_027693_movie_t-3.jpg", "2020-0204-103442_027693_movie_t-2.jpg", "2020-0204-103442_027693_movie_t-1.jpg", "2020-0204-103442_027693_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban arterial beneath an elevated roadway has smooth pavement and at least two same-direction lanes, with heavy stop-and-go flow and no oncoming traffic visible. A silver hatchback directly ahead in the ego lane is stopped because of traffic congestion ahead, holding the ego vehicle. To the right, a large white bus with red stripes creeps forward in the adjacent lane alongside, limiting room to change lanes. Farther ahead, queues of cars fill both lanes under the viaduct and inch forward with short gaps.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with this stationary vehicle."}
{"id": "train_02534", "split": "train", "clip_key": "titan_clip_1013_000168_movie", "source": {"subset": "titan", "scenario": "clip_1013", "frame": "000168"}, "frames": ["titan_clip_1013_000168_movie_t-3.jpg", "titan_clip_1013_000168_movie_t-2.jpg", "titan_clip_1013_000168_movie_t-1.jpg", "titan_clip_1013_000168_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "The scene is an urban back street rising gently between buildings, a single narrow lane with metal guardrails, intact pavement, and light vehicular flow but many pedestrians. On the left, a pedestrian in a blue shirt and black pants walks away along the lane edge, close to the travel path and may enter the ego lane. Ahead in the center of the lane, a person in a white top walks away within the roadway, directly in the ego path and limiting space. Farther ahead near the end of the block, several pedestrians cross from right to left at the top of the incline and could block the lane. A yellow parking sign with rates stands on the right, and a small work area with cones and sheeting narrows the right edge.", "hazard_reasoning": "A pedestrian wearing a blue shirt and black pants is walking along the left side of the lane, away from the ego car. The pedestrian is close to the traffic lane, so you should carefully manoeuvre around them to avoid a collision."}
{"id": "train_02535", "split": "train", "clip_key": "2020-0220-151845_048023_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "048023"}, "frames": ["2020-0220-151845_048023_movie_t-3.jpg", "2020-0220-151845_048023_movie_t-2.jpg", "2020-0220-151845_048023_movie_t-1.jpg", "2020-0220-151845_048023_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road under an elevated expressway carries three same-direction lanes on dry, well-marked pavement, with traffic moderate and compressing into slow flow. Ahead in the ego lane a red flatbed truck with a tarped load slows because of congestion ahead, constraining the ego car's pace. To the right, a silver boxy minivan travels alongside then inches ahead in the adjacent lane, limiting a rightward lane change. In the far-right lane a black SUV moves past slowly and remains close by, further restricting lateral space. Overhead gantry signs indicate Takaido 5 km as the stream creeps forward.", "hazard_reasoning": "There is a red truck slowing down in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed caused by the traffic congestion."}
{"id": "train_02536", "split": "train", "clip_key": "2020-0226-101332_011640_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "011640"}, "frames": ["2020-0226-101332_011640_movie_t-3.jpg", "2020-0226-101332_011640_movie_t-2.jpg", "2020-0226-101332_011640_movie_t-1.jpg", "2020-0226-101332_011640_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows the ego vehicle proceeding in the left lane of a narrow two-way road with a single yellow centerline and no median; the pavement is wet and traffic is light with no vehicles ahead. The road rises slightly and bends right past a large brick building, with guardrails and narrow sidewalks on both sides and a zebra crossing immediately in front. A pedestrian stands on the right sidewalk near the crosswalk, looking toward the road and waiting, while another person walks farther ahead along the building entrance away from traffic. A no-entry sign faces the side street on the right, and overhead signal heads appear unlit.", "hazard_reasoning": "Since there are no vehicles, obstacles, or crossing pedestrians in the roadway, there are no immediate hazards and normal driving conditions apply."}
{"id": "train_02537", "split": "train", "clip_key": "2020-0204-150838_065792_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "065792"}, "frames": ["2020-0204-150838_065792_movie_t-3.jpg", "2020-0204-150838_065792_movie_t-2.jpg", "2020-0204-150838_065792_movie_t-1.jpg", "2020-0204-150838_065792_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial under elevated expressway ramps approaches a wide signalized intersection with multiple lanes, no raised median, smooth pavement, and light traffic. A dark dump truck is directly ahead in the ego lane moving slowly toward the junction, constraining the pace. Two small white trucks are stopped along the left curb near the intersection, remaining outside the travel lane. A vehicle passes on the elevated roadway to the right without interacting, and traffic lights are visible above the far side of the junction.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02538", "split": "train", "clip_key": "2020-0228-150133_007230_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "007230"}, "frames": ["2020-0228-150133_007230_movie_t-3.jpg", "2020-0228-150133_007230_movie_t-2.jpg", "2020-0228-150133_007230_movie_t-1.jpg", "2020-0228-150133_007230_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane in each direction and no median runs between midrise buildings, curving gently right; the pavement looks smooth and traffic is light. A white box truck ahead in the ego lane drives away from the ego car and sets the pace. A passenger car approaches in the oncoming lane to the right, continuing straight within its lane. Cyclists ride along the left sidewalk behind a guardrail, moving parallel to traffic without entering the roadway.", "hazard_reasoning": "There is a white truck driving away from the ego car, in front of the ego car. Follow the vehicle ahead to maintain safe distance in case it brakes unexpectedly."}
{"id": "train_02539", "split": "train", "clip_key": "titan_clip_277_000546_movie", "source": {"subset": "titan", "scenario": "clip_277", "frame": "000546"}, "frames": ["titan_clip_277_000546_movie_t-3.jpg", "titan_clip_277_000546_movie_t-2.jpg", "titan_clip_277_000546_movie_t-1.jpg", "titan_clip_277_000546_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the obstruction", "environment_perception": "A narrow urban street with one lane each way runs between mid-rise buildings, with no median and a damp patch on the worn pavement; traffic is light as the ego vehicle moves slowly past roadside work. Ahead in the ego lane along the left curb, a silver van is parked and partially intrudes into the lane, constraining the path. Near the foreground on the left, a white flatbed truck is stopped at a work zone with cones and red barricades that narrow the lane. On the right sidewalk by a parking-garage entrance, a pedestrian lingers near the curb but remains off the roadway. A distant overhead signal is visible at the next intersection, though its aspect is unclear.", "hazard_reasoning": "There is a silver van parked on the right side of the road, in the ego lane, because of an emergency. The stopped van in the ego lane creates an obstruction that the driver must manoeuvre around carefully to avoid a collision."}
{"id": "train_02540", "split": "train", "clip_key": "titan_clip_395_000570_movie", "source": {"subset": "titan", "scenario": "clip_395", "frame": "000570"}, "frames": ["titan_clip_395_000570_movie_t-3.jpg", "titan_clip_395_000570_movie_t-2.jpg", "titan_clip_395_000570_movie_t-1.jpg", "titan_clip_395_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian walking on road", "environment_perception": "A narrow urban shopping street with a single shared lane paved in stone blocks has no divider and shows no motor traffic, only light pedestrian movement; the surface appears slightly damp. On the left near the curb, a pedestrian carrying a backpack walks away from the ego vehicle along the road edge, close to its line of travel and likely to constrain pace. On the right, a pedestrian walks toward the camera along the sidewalk near the curb while staying beside the lane. Farther ahead at the marked crosswalk, several people step across the street, occupying the path the vehicle would take. Orange cones and parked bicycles line the left storefront, further narrowing the usable roadway.", "hazard_reasoning": "A pedestrian carrying a backpack is walking on the left side of the road, away from the ego car. The pedestrian may unexpectedly step into the lane, requiring the driver to remain vigilant and cautious."}
{"id": "train_02541", "split": "train", "clip_key": "2020-0214-102601_083014_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "083014"}, "frames": ["2020-0214-102601_083014_movie_t-3.jpg", "2020-0214-102601_083014_movie_t-2.jpg", "2020-0214-102601_083014_movie_t-1.jpg", "2020-0214-102601_083014_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single lane each way and a solid yellow centerline runs between low-rise buildings; the pavement is dry and intact, and traffic is moderate with a brief slowdown ahead. A black hatchback directly ahead in the ego lane slows, as the truck in front is reducing speed and constraining the pace. The box truck farther ahead in the same lane proceeds slowly, forming a short queue that the ego vehicle follows. An oncoming black sedan approaches in the right-side lane near the centerline but continues past without deviating. A man on the right sidewalk walks along the curb, remaining outside the roadway.", "hazard_reasoning": "There is a black hatchback that is slowing down in the ego lane, due to the truck slowing down ahead. The hatchback's sudden deceleration may require the driver to brake unexpectedly, so the driver should reduce speed to maintain a safe following distance."}
{"id": "train_02542", "split": "train", "clip_key": "2020-0207-151349_034139_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "034139"}, "frames": ["2020-0207-151349_034139_movie_t-3.jpg", "2020-0207-151349_034139_movie_t-2.jpg", "2020-0207-151349_034139_movie_t-1.jpg", "2020-0207-151349_034139_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under an elevated expressway; the ego car travels in the left curb lane beside a sidewalk, with two same-direction lanes to the right on smooth pavement and moderate, slow traffic. Directly ahead in the ego lane, a black motorcycle is stopped, waiting at a red light and holding the ego car. Slightly ahead to the right, a small silver mini-truck idles in the adjacent lane, remaining alongside and limiting an immediate merge. Farther ahead in the right lanes, a white coach bus moves slowly with a black taxi behind it, setting the pace of the general flow. A white van stands at the left curb near the camera.", "hazard_reasoning": "There is a black motorcycle stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver needs to stop to avoid colliding with the motorcycle and comply with the traffic signal."}
{"id": "train_02543", "split": "train", "clip_key": "2020-0129-105040_058012_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "058012"}, "frames": ["2020-0129-105040_058012_movie_t-3.jpg", "2020-0129-105040_058012_movie_t-2.jpg", "2020-0129-105040_058012_movie_t-1.jpg", "2020-0129-105040_058012_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the approaching black van.", "environment_perception": "An urban residential two-way street with a single narrow lane each direction and no median stretches ahead; the asphalt is mostly smooth with small speed cushions and chevrons, and traffic is light. A cyclist ahead along the left-side corridor behind green bollards rides in the same direction near the ego lane and may reenter the roadway where the posts end. A black van approaches in the right lane as oncoming traffic toward the ego car, reducing available width as it closes in. A pedestrian walks along the left sidewalk by the fence. A triangular school-zone warning sign is visible above the road ahead.", "hazard_reasoning": "A black van is driving in the right lane toward the ego car. The van in the opposing lane may encroach into your lane around the curve, reducing reaction time and increasing collision risk, so the driver should remain alert and monitor the van's position."}
{"id": "train_02544", "split": "train", "clip_key": "2020-0227-104226_033356_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "033356"}, "frames": ["2020-0227-104226_033356_movie_t-3.jpg", "2020-0227-104226_033356_movie_t-2.jpg", "2020-0227-104226_033356_movie_t-1.jpg", "2020-0227-104226_033356_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way arterial with two lanes in the ego direction and an orange painted centerline passes shops and utility poles; the pavement is dry and traffic appears moderate. Ahead, a white box truck in the ego lane moves left and changes into the adjacent left lane directly in front of the ego car, momentarily constraining the ego's pace. To the right of the centerline, a white van approaches as oncoming traffic, continuing straight and remaining separated from the ego lane. On a separated side lane to the far left, several buses travel the opposite way behind a railing and do not interact.", "hazard_reasoning": "There is a white truck lane changing in front of the ego car, from the ego lane to the left lane. The truck's maneuver may reduce the available space in the current lane, so the driver should follow the vehicle ahead to maintain a safe distance and avoid a sudden collision."}
{"id": "train_02545", "split": "train", "clip_key": "titan_clip_1037_000360_movie", "source": {"subset": "titan", "scenario": "clip_1037", "frame": "000360"}, "frames": ["titan_clip_1037_000360_movie_t-3.jpg", "titan_clip_1037_000360_movie_t-2.jpg", "titan_clip_1037_000360_movie_t-1.jpg", "titan_clip_1037_000360_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with one narrow lane in each direction has smooth pavement and no median, and traffic is light with several vehicles parked along the curbs. Ahead in the ego lane, a group of pedestrians wearing black pants crosses from left to right midblock, moving directly through the vehicle's path and slowing the flow. A bicyclist rides ahead near the center of the lane, continuing away at a moderate pace and occupying the ego path. A white minivan just ahead in the same lane moves slowly near the crossing pedestrians. A small truck is parked along the left curb, narrowing the approach. No oncoming vehicles or traffic signals are salient in the scene.", "hazard_reasoning": "There is a group of pedestrians, wearing black pants, and crossing the street in the ego lane, from the left side of the road. The pedestrians are entering the vehicle's path, so you should slow down to avoid a potential collision."}
{"id": "train_02546", "split": "train", "clip_key": "2020-0207-151349_008452_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "008452"}, "frames": ["2020-0207-151349_008452_movie_t-3.jpg", "2020-0207-151349_008452_movie_t-2.jpg", "2020-0207-151349_008452_movie_t-1.jpg", "2020-0207-151349_008452_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist", "environment_perception": "A narrow two-way suburban road curves right past an entrance lined with bollards; the pavement is dry and smooth, and traffic is very light with no motor vehicles in view. A painted median gore separates the curve from the entrance area. Ahead, a cyclist in a brown coat carrying a backpack rides from the left edge across the lane toward the entrance, crossing the ego vehicle's path and constraining its approach. Slightly farther ahead, a second cyclist also moves rightward across in front and clears the lane by the bollards. A blue pedestrian crossing sign stands on the right, and bright sun glare washes the upper right of the scene.", "hazard_reasoning": "There is a cyclist in a brown coat, carrying a backpack, cycling on the left side of the road, away from the ego car. Yielding is necessary to allow the cyclist to pass safely and prevent a collision."}
{"id": "train_02547", "split": "train", "clip_key": "2020-0227-104226_001028_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "001028"}, "frames": ["2020-0227-104226_001028_movie_t-3.jpg", "2020-0227-104226_001028_movie_t-2.jpg", "2020-0227-104226_001028_movie_t-1.jpg", "2020-0227-104226_001028_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the stopped SUV", "environment_perception": "An urban divided arterial with multiple same-direction lanes to the left of a raised median has smooth pavement and heavy, slow traffic, while the oncoming lanes to the right flow more freely. A white SUV directly ahead in the ego lane is stopped, held by a red traffic light and congestion further ahead, blocking the ego vehicle's path. In the adjacent lane to the left, a white van queues alongside and inches forward, limiting room to change lanes. Pedestrians are visible on the right sidewalk behind railings, walking parallel to the road without interacting with traffic.", "hazard_reasoning": "There is a white SUV stopped in the ego lane, because of red traffic lights and traffic congestion ahead. You should stop to avoid colliding with this stationary vehicle at the red light."}
{"id": "train_02548", "split": "train", "clip_key": "titan_clip_923_000048_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_923_000048_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_923_000048_movie_t-3_augB1.jpg", "titan_clip_923_000048_movie_t-2_augB1.jpg", "titan_clip_923_000048_movie_t-1_augB1.jpg", "titan_clip_923_000048_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street without a marked centerline runs between buildings, the pavement smooth, with light traffic and some constriction from roadside construction. Directly ahead, a pedestrian in a green T-shirt carrying an umbrella crosses midblock toward the right side, moving through the ego-vehicle's lane and constraining its path. Farther ahead in the same direction, a small silver minivan travels slowly near the center of the roadway. On the left, a white van is stopped beside scaffolding with a person standing next to its rear, narrowing the passage. People cluster on the right by a building entrance with cones and a ramp, and no oncoming vehicles are visible.", "hazard_reasoning": "A pedestrian with a green t-shirt and an umbrella is crossing in the middle of the road to the right side. The driver should slow down to avoid colliding with the crossing pedestrian."}
{"id": "train_02549", "split": "train", "clip_key": "2020-0203-114632_008485_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "008485"}, "frames": ["2020-0203-114632_008485_movie_t-3.jpg", "2020-0203-114632_008485_movie_t-2.jpg", "2020-0203-114632_008485_movie_t-1.jpg", "2020-0203-114632_008485_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential intersection on a narrow two-way road with one lane each direction and no median, the pavement dry and smooth and traffic light. The white van directly ahead in the ego lane accelerates through the junction on a green signal, setting the ego car's pace. A pedestrian to the right moves along the corner beside the zebra crossing and remains clear of the ego lane. No oncoming vehicles appear. An orange cone stands on the right shoulder near the intersection.", "hazard_reasoning": "There is a white van accelerating in front of the ego car, in the ego lane, because of a green traffic light. The driver should start moving promptly to proceed through the green light while traffic is clear."}
{"id": "train_02550", "split": "train", "clip_key": "2020-0220-151845_054697_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "054697"}, "frames": ["2020-0220-151845_054697_movie_t-3.jpg", "2020-0220-151845_054697_movie_t-2.jpg", "2020-0220-151845_054697_movie_t-1.jpg", "2020-0220-151845_054697_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs under an elevated structure, with a concrete barrier tight on the left; the pavement is dry and traffic is slow-moving. A red flatbed truck with a yellow-covered load is directly ahead in the ego lane and slows, constraining the ego vehicle's pace. In the adjacent right lane, a black SUV slightly ahead creeps forward beside the truck, limiting an easy lane change. Farther ahead in the right lane, several small vans queue and advance intermittently, keeping the flow congested. The left barrier and viaduct columns hem in the roadway and reduce sight lines.", "hazard_reasoning": "There is a red truck slowing in front of the ego car, in the ego lane. The truck's deceleration ahead reduces available stopping distance, so the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_02551", "split": "train", "clip_key": "2020-0226-140503_062775_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "062775"}, "frames": ["2020-0226-140503_062775_movie_t-3.jpg", "2020-0226-140503_062775_movie_t-2.jpg", "2020-0226-140503_062775_movie_t-1.jpg", "2020-0226-140503_062775_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban downhill two-way road with one lane per direction, the ego traveling in the left lane, curves gently right between a railway on the left and tall office buildings on the right. The asphalt is dry and somewhat worn, and traffic is very light with no vehicles visible ahead or oncoming. A single pedestrian on the left sidewalk near the guardrail walks away from the camera, remaining behind the barrier. No salient traffic signals or posted speeds are visible. Low shrubs and guardrails border the road, and the right-hand curve and grade slightly limit the forward sightline.", "hazard_reasoning": "No other road users or obstacles are present, and no immediate hazards are detected due to the clear roadway and absent traffic."}
{"id": "train_02552", "split": "train", "clip_key": "titan_clip_1003_000258_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1003_000258_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1003_000258_movie_t-3_augB1.jpg", "titan_clip_1003_000258_movie_t-2_augB1.jpg", "titan_clip_1003_000258_movie_t-1_augB1.jpg", "titan_clip_1003_000258_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial side street with paver bricks forms a single narrow lane without a center divider, bordered by cones along both curbs; traffic is light and steady. A pedestrian wearing a striped shirt crosses in the middle of the lane toward the right side of the road, briefly occupying the ego path. Slightly farther ahead, a black sedan in the same direction slows near the right curb by a building entrance, reducing the available space. Several other pedestrians walk along the sidewalks ahead, keeping to the sides. A round roadside sign on the left shows 30, and an entrance to a parking area is visible on the right.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt, crossing the street, and walking in the middle of the road, toward the right side of the road. The pedestrian's position in the center of the lane increases the risk of collision if the vehicle maintains speed, so the driver should slow down to allow safe passage."}
{"id": "train_02553", "split": "train", "clip_key": "titan_clip_599_000090_movie", "source": {"subset": "titan", "scenario": "clip_599", "frame": "000090"}, "frames": ["titan_clip_599_000090_movie_t-3.jpg", "titan_clip_599_000090_movie_t-2.jpg", "titan_clip_599_000090_movie_t-1.jpg", "titan_clip_599_000090_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban back street with a single narrow undivided lane runs between shops; the pavement looks smooth and traffic is light. On the left side near the ego path, a pedestrian in black pants carrying a handbag walks toward the camera, using the roadway because bicycles occupy the left shoulder. Ahead a second pedestrian with a backpack approaches near the center-left and may briefly enter the ego lane. Farther ahead, a white van in the same lane stands nearly stopped, limiting the passage. Bicycles are parked along both curbs and a row of them bunches on the right, further narrowing the corridor.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing black pants, and walking on the left side of the road, towards the ego car, because of bicycles on the left shoulder. The pedestrian has moved into the vehicle path to avoid the bicycles, posing a collision risk; the driver should carefully manoeuvre around the pedestrian."}
{"id": "train_02554", "split": "train", "clip_key": "2020-0131-135401_030301_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030301"}, "frames": ["2020-0131-135401_030301_movie_t-3.jpg", "2020-0131-135401_030301_movie_t-2.jpg", "2020-0131-135401_030301_movie_t-1.jpg", "2020-0131-135401_030301_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the black sedan approaching in the intersection", "environment_perception": "An urban two-way road with one lane each direction runs through midrise buildings, with no median and smooth pavement; traffic is moderate as vehicles filter through a signalized intersection. In the middle of the intersection, an oncoming black sedan in its right lane drives toward the ego car, passing through ahead. A white flatbed truck sits close on the right edge beside the ego lane, nearly aligned with traffic and creeping forward, which may enter the lane. Farther ahead in the ego lane beyond the crosswalk, a white box truck proceeds slowly, setting the pace for same-direction traffic. The traffic lights facing the ego direction show green.", "hazard_reasoning": "A black sedan in the middle of the intersection is driving in the right lane, toward the ego car. It may enter your path unexpectedly, so you should yield to avoid a collision."}
{"id": "train_02555", "split": "train", "clip_key": "2020-0218-103119_021858_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "021858"}, "frames": ["2020-0218-103119_021858_movie_t-3.jpg", "2020-0218-103119_021858_movie_t-2.jpg", "2020-0218-103119_021858_movie_t-1.jpg", "2020-0218-103119_021858_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane street with good pavement runs between tall buildings, with flexible posts forming a narrow side lane on the right; traffic is slow and compressed. A white van directly ahead in the ego lane is stopped because congestion blocks movement further up the road. To its left, a silver sedan creeps forward in the adjacent same-direction lane, passing the van and limiting any immediate lane change by the ego vehicle. Farther ahead in that left lane, a box truck waits in the queue, contributing to the bottleneck. A blue straight-only sign is visible above the roadway.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of traffic congestion ahead. Stop to maintain a safe distance from the halted vehicle and avoid a rear-end collision."}
{"id": "train_02556", "split": "train", "clip_key": "2020-0228-102841_033935_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "033935"}, "frames": ["2020-0228-102841_033935_movie_t-3.jpg", "2020-0228-102841_033935_movie_t-2.jpg", "2020-0228-102841_033935_movie_t-1.jpg", "2020-0228-102841_033935_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with two marked lanes in the same direction, smooth asphalt, and light moving traffic is shown; bollards edge a narrow right-side shoulder and no median or oncoming lanes are visible. Along the left curb ahead, a row of taxis and sedans is parked, occupying most of the left lane and narrowing the usable roadway. Farther ahead in the right lane, a dark sedan continues ahead with ample gap, loosely setting the pace for the ego vehicle. On the right shoulder near the camera, a white van and a couple of cars stand behind the bollards and remain outside the travel lane. A parking-restriction sign is posted on the left, and a pedestrian overpass spans the road in the distance.", "hazard_reasoning": "No hazards are present in the scene, so the driver can continue safely at the current speed."}
{"id": "train_02557", "split": "train", "clip_key": "titan_clip_514_000372_movie", "source": {"subset": "titan", "scenario": "clip_514", "frame": "000372"}, "frames": ["titan_clip_514_000372_movie_t-3.jpg", "titan_clip_514_000372_movie_t-2.jpg", "titan_clip_514_000372_movie_t-1.jpg", "titan_clip_514_000372_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "A narrow urban commercial street with a single shared lane and no center line runs ahead; the cobblestone-like pavement is patchy and traffic is very light. In the middle of the road ahead, a lady in a white T-shirt carrying a handbag walks away from the ego vehicle along the lane, occupying the path and constraining the pace. On the left near a shopfront, a pedestrian stands close to the curb and may step into the lane. Farther ahead near the buildings, another pedestrian crosses from right to left across the ego path. Parked bicycles and a scooter line the right curb, slightly narrowing the usable lane.", "hazard_reasoning": "There is a lady wearing a white t-shirt, carrying a handbag and walking away from the ego car in the middle of the road. The driver must yield because the pedestrian is crossing the vehicle's path and has limited visibility due to the shutter obstruction.\\n"}
{"id": "train_02558", "split": "train", "clip_key": "2020-0210-155354_001711_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "001711"}, "frames": ["2020-0210-155354_001711_movie_t-3.jpg", "2020-0210-155354_001711_movie_t-2.jpg", "2020-0210-155354_001711_movie_t-1.jpg", "2020-0210-155354_001711_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban commercial street with one lane in each direction and no median is lined by guardrails, and the pavement looks smooth; traffic is heavy and largely stopped near a signalized intersection. A white hatchback directly ahead in the ego lane is stopped because of congestion and holds the ego vehicle's pace. An oncoming van to the right proceeds past in the opposite lane toward the intersection without deviating. Farther ahead, more same-direction cars queue and creep toward the light. Pedestrians stand along both sidewalks near the crosswalk, staying behind the railings and not entering the roadway. A traffic signal hangs above the intersection ahead.", "hazard_reasoning": "A white hatchback is stopped in front of the ego car in the ego lane because of traffic congestion. You should stop to maintain a safe distance and avoid a collision with the halted vehicle ahead."}
{"id": "train_02559", "split": "train", "clip_key": "titan_clip_334_000420_movie", "source": {"subset": "titan", "scenario": "clip_334", "frame": "000420"}, "frames": ["titan_clip_334_000420_movie_t-3.jpg", "titan_clip_334_000420_movie_t-2.jpg", "titan_clip_334_000420_movie_t-1.jpg", "titan_clip_334_000420_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van", "environment_perception": "An urban commercial street with a single narrow lane in the ego direction runs between storefronts and a raised curb island; the pavement looks slightly worn and traffic is light. A white van is parked on the left side of the road just ahead, standing at the curb and narrowing the usable lane for the ego vehicle. A dark car farther ahead near the middle of the lane proceeds slowly in the same direction, constraining the ego's pace. Several pedestrians on the right sidewalk walk and pause near the curb, while others farther ahead cross between shopfronts and the plaza but stay off the roadway. No notable traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a white van parked on the left side of the road. The stationary vehicle reduces available lane width and may force the driver to adjust position to avoid collision, so the driver should carefully manoeuvre around it."}
{"id": "train_02560", "split": "train", "clip_key": "titan_clip_839_000480_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_839_000480_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_839_000480_movie_t-3_augB1.jpg", "titan_clip_839_000480_movie_t-2_augB1.jpg", "titan_clip_839_000480_movie_t-1_augB1.jpg", "titan_clip_839_000480_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one narrow lane per direction and double yellow centerlines runs past shops and railings, the pavement smooth and traffic light. A man in a green reflective jacket, black boots, and a helmet stands in the middle of the road ahead, signaling to direct vehicles and constraining the ego car's pace. An oncoming blue truck passes close by in the opposite lane under his guidance. A small white car ahead in the ego lane waits near the center of the road, held by the directed flow.", "hazard_reasoning": "There's a man wearing a green reflector jacket, black boots and a helmet, standing in the middle of the road, in front of the ego car, because he's directing the vehicular traffic. The driver should carefully manoeuvre around the pedestrian directing traffic to avoid a collision."}
{"id": "train_02561", "split": "train", "clip_key": "2020-0127-132751_100520_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "100520"}, "frames": ["2020-0127-132751_100520_movie_t-3.jpg", "2020-0127-132751_100520_movie_t-2.jpg", "2020-0127-132751_100520_movie_t-1.jpg", "2020-0127-132751_100520_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with a solid yellow median passes shops, the dry pavement slightly worn, and overall traffic light with steady oncoming flow. A silver van directly ahead in the ego lane is slowing down, constraining the ego car's pace. Two oncoming cars travel in the opposite lane to the right and continue past within their lane. Pedestrians on both sidewalks, one on the left walking away and one on the right near a driveway, move along the curb and remain off the roadway.", "hazard_reasoning": "A silver van is slowing down in front of the ego car in the ego lane. The van's deceleration requires you to reduce speed to maintain a safe distance and avoid a collision, so slow down."}
{"id": "train_02562", "split": "train", "clip_key": "titan_clip_667_000414_movie", "source": {"subset": "titan", "scenario": "clip_667", "frame": "000414"}, "frames": ["titan_clip_667_000414_movie_t-3.jpg", "titan_clip_667_000414_movie_t-2.jpg", "titan_clip_667_000414_movie_t-1.jpg", "titan_clip_667_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on road", "environment_perception": "A narrow urban back street with shops and low-rise apartments lines a two-way road without a center line; the pavement is smooth and vehicular traffic is very light, with no oncoming cars visible. On the right edge close to the ego lane, two pedestrians walk away along the shoulder and occasionally encroach toward the roadway, making them immediately relevant. Near the center ahead, a child walks toward the camera down the middle, drifting slightly left and potentially entering the ego path. Farther ahead, a small crowd moves along and across the street in both directions, collectively constraining the vehicle's progress.", "hazard_reasoning": "There is a pedestrian wearing a black dress, carrying a handbag, and walking on the right side of the road, towards the ego car. The driver should be aware because the pedestrian may step into the travel path unexpectedly, requiring early speed adjustment."}
{"id": "train_02563", "split": "train", "clip_key": "titan_clip_374_000192_movie", "source": {"subset": "titan", "scenario": "clip_374", "frame": "000192"}, "frames": ["titan_clip_374_000192_movie_t-3.jpg", "titan_clip_374_000192_movie_t-2.jpg", "titan_clip_374_000192_movie_t-1.jpg", "titan_clip_374_000192_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrian waiting to cross", "environment_perception": "An urban commercial street with two lanes in the same direction, no median, and smooth asphalt carries light to moderate flow as the view passes shops and a scaffolded frontage marked by cones on the right. Ahead in the ego lane a black sedan moves steadily and briefly slows, setting the pace, while a small van proceeds in the right lane slightly farther ahead. On the left curb a pedestrian wearing a white shirt and black pants and pulling a suitcase waits to cross from left to right near the bus stop, potentially stepping into the ego lane. At the near right edge a cyclist emerges from the sidewalk area and rides along the curb toward the roadway by the cones, which may bring them into the right lane.", "hazard_reasoning": "a pedestrian wearing a white shirt with a black pant and carrying a suitcase, is waiting to cross the street from the left to the right side. The driver should be cautious because the pedestrian may step into the roadway unexpectedly."}
{"id": "train_02564", "split": "train", "clip_key": "2020-0228-102841_000822_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "000822"}, "frames": ["2020-0228-102841_000822_movie_t-3.jpg", "2020-0228-102841_000822_movie_t-2.jpg", "2020-0228-102841_000822_movie_t-1.jpg", "2020-0228-102841_000822_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban backstreet is shown, a very narrow single-lane alley without a centerline, bordered by close buildings; the pavement is dry and worn, and there is no traffic. The lane ends at a building directly ahead and bends to the right, forming a tight, partially blind corner. Along the right side, a construction-covered wall with scaffolding lines the road, and several metal carts and equipment are parked on the verge, slightly encroaching into the lane. Strong sun glare washes the upper scene, and no pedestrians, cyclists, or other vehicles are visible.", "hazard_reasoning": "The construction fencing partially obstructs the view of the building, creating a blind spot that may conceal approaching road users and requires driver attention."}
{"id": "train_02565", "split": "train", "clip_key": "titan_clip_870_000324_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_870_000324_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_870_000324_movie_t-3_augB1.jpg", "titan_clip_870_000324_movie_t-2_augB1.jpg", "titan_clip_870_000324_movie_t-1_augB1.jpg", "titan_clip_870_000324_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "The ego vehicle travels on a narrow urban side street with a single mixed-traffic lane and no centerline, smooth pavement, and very light vehicle traffic. A pedestrian in a gray shirt and black pants walks toward the ego vehicle in the middle of the lane, detouring around a group of pedestrians standing along the right storefronts, and he occupies the ego path. The group on the right lingers near parked bicycles and slightly protrudes into the roadway, reducing the usable width. Several other pedestrians ahead move away along the center and the left margin, and their presence moderates the ego vehicle's pace. Bollards line the left edge and a small barrier is visible in the distance, adding visual narrowing but no immediate obstruction.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black pants, walking in the middle of the road, toward the ego car, because of a group of pedestrians standing on the right side of the road. The pedestrian is entering the vehicle's path, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_02566", "split": "train", "clip_key": "titan_clip_1222_000060_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1222_000060_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1222_000060_movie_t-3_augB1.jpg", "titan_clip_1222_000060_movie_t-2_augB1.jpg", "titan_clip_1222_000060_movie_t-1_augB1.jpg", "titan_clip_1222_000060_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrians", "environment_perception": "An urban commercial street with a narrow two-way carriageway and no median is shown; the pavement is worn but dry, and traffic is light with no oncoming vehicles visible. Ahead in the ego lane, a group of pedestrians wearing white shirts walks away along the center of the road, occupying the lane and limiting the car's pace. At the left front, a white sedan is stopped near the curb with its nose protruding into the roadway, which may enter the lane and affect the ego vehicle's path. The road gently bends left between shopfronts and trees, and no salient traffic signals are visible.", "hazard_reasoning": "There is a group of pedestrians wearing white shirts and walking in front of the ego car. The driver should yield because these pedestrians are crossing the path of travel and may not stop."}
{"id": "train_02567", "split": "train", "clip_key": "2020-0207-151349_053578_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "053578"}, "frames": ["2020-0207-151349_053578_movie_t-3.jpg", "2020-0207-151349_053578_movie_t-2.jpg", "2020-0207-151349_053578_movie_t-1.jpg", "2020-0207-151349_053578_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the slowing vehicle", "environment_perception": "An urban arterial with three lanes in the ego direction has smooth asphalt and no median, with moderate traffic overall and a queue in the rightmost lane marked off by red bollards; oncoming lanes run along the far left. A white hatchback ahead in the left lane slows while moving away from the ego car. In the center lane directly ahead, several vans and cars roll slowly toward a signalized intersection under a pedestrian overpass, setting the ego vehicle's pace. To the right, a flatbed truck and other vehicles are lined up and mostly stopped in the segregated lane, remaining separated from the through lanes. Oncoming traffic moves steadily in the opposite direction.", "hazard_reasoning": "There is a white hatchback slowing in the left lane, moving away from the ego car. Since the hatchback is reducing speed ahead, you should be aware to adjust your speed and maintain a safe following distance."}
{"id": "train_02568", "split": "train", "clip_key": "2020-0213-143552_012491_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "012491"}, "frames": ["2020-0213-143552_012491_movie_t-3.jpg", "2020-0213-143552_012491_movie_t-2.jpg", "2020-0213-143552_012491_movie_t-1.jpg", "2020-0213-143552_012491_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to white van merging ahead", "environment_perception": "An urban two-way road with one lane each direction curves right into a signalized intersection; the pavement is smooth and traffic is light, with no physical median. At the intersection, a white van comes from the left side and moves across to merge into the ego lane, taking position directly in front of the ego car. A second passenger car follows from the same left approach but stays behind the van and does not enter the ego car's path. Overhead traffic signals are present on the far side of the junction, and bold hatched markings guide the turn through the intersection.", "hazard_reasoning": "There is a white van driving on the left side of the intersection and moving from the left side of the intersection to in front of the ego car. The van is merging directly into the ego vehicle's lane, so the driver should yield to avoid a potential collision."}
{"id": "train_02569", "split": "train", "clip_key": "2020-0203-114632_066344_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "066344"}, "frames": ["2020-0203-114632_066344_movie_t-3.jpg", "2020-0203-114632_066344_movie_t-2.jpg", "2020-0203-114632_066344_movie_t-1.jpg", "2020-0203-114632_066344_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of merging truck", "environment_perception": "An urban bridge in a built-up area carries a two-way arterial with two same-direction lanes on the ego side, a double orange median, smooth pavement, and light to moderate flow as the road curves gently right. A white truck ahead in the ego lane moves right into the adjacent lane, briefly affecting our headway while it crosses. A dark car ahead-right continues steadily in that right lane, remaining parallel and not merging. Oncoming vehicles travel in the opposite lanes beyond the median and pass without interaction. A yellow merge warning sign stands on the left railing.", "hazard_reasoning": "There is a white truck in front of the ego car, changing to the right lane. The truck's lane change may encroach on your path, so you should be aware to maintain safe distance and avoid a collision."}
{"id": "train_02570", "split": "train", "clip_key": "2020-0214-145407_059468_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "059468"}, "frames": ["2020-0214-145407_059468_movie_t-3.jpg", "2020-0214-145407_059468_movie_t-2.jpg", "2020-0214-145407_059468_movie_t-1.jpg", "2020-0214-145407_059468_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped van on the left.", "environment_perception": "An urban divided arterial with three lanes in the ego direction runs between tall buildings, with a planted median on the right and smooth pavement; traffic is light to moderate and flows steadily. A white hatchback directly ahead in the ego lane proceeds at a steady speed and sets the pace. On the left side ahead, a silver van is stopped at the curb, and left-lane traffic passes it. A white box truck travels alongside in the far-left lane and continues forward without entering the ego lane.", "hazard_reasoning": "There is a silver van stopped at the left side of the road. The stopped van may partially block the lane, so the driver should be aware and maintain a safe lane position."}
{"id": "train_02571", "split": "train", "clip_key": "titan_clip_134_000198_movie", "source": {"subset": "titan", "scenario": "clip_134", "frame": "000198"}, "frames": ["titan_clip_134_000198_movie_t-3.jpg", "titan_clip_134_000198_movie_t-2.jpg", "titan_clip_134_000198_movie_t-1.jpg", "titan_clip_134_000198_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial street with a narrow two-way road has no median and textured paving, and traffic is light and slow near an unsignalized zebra crossing. A silver hatchback ahead in the ego lane eases toward the crosswalk and sets the ego car's pace. A pedestrian wearing a white shirt, black pants, and a cap holds a sign in the left lane just before the crosswalk and walks away from the ego vehicle, remaining in the ego path. Several other pedestrians wait near the curbs by the crosswalk and one walks along the right sidewalk, but none enter the roadway. A small white van stands at the right curb beyond the crosswalk, narrowing space near the corner, and a yield sign is posted on the left.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and a cap, holding a sign, standing in the left lane, and walking away from the ego car. The pedestrian is crossing in the lane near the parked van, creating a collision risk if the driver does not adjust their path."}
{"id": "train_02572", "split": "train", "clip_key": "2020-0226-140503_069401_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "069401"}, "frames": ["2020-0226-140503_069401_movie_t-3.jpg", "2020-0226-140503_069401_movie_t-2.jpg", "2020-0226-140503_069401_movie_t-1.jpg", "2020-0226-140503_069401_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban multi-lane arterial with a metal median rail to the right and damp but intact pavement carries moderate traffic; oncoming flow moves on the far side of the barrier. Ahead near a crosswalk, a gray van to the left drifts right and changes into the ego lane in front, merging into the space ahead of the ego car. Farther ahead in the same lane, a black hatchback proceeds straight at a steady pace. On the left sidewalk by the crosswalk, two pedestrians wait at the curb. Overhead traffic lights and signs span the intersection ahead.", "hazard_reasoning": "There is a gray van changing lanes in front of the ego car, from the left lane to the ego lane. The driver should slow down to maintain safe distance as the van merges in front, reducing available space."}
{"id": "train_02573", "split": "train", "clip_key": "2020-0210-101957_041501_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "041501"}, "frames": ["2020-0210-101957_041501_movie_t-3.jpg", "2020-0210-101957_041501_movie_t-2.jpg", "2020-0210-101957_041501_movie_t-1.jpg", "2020-0210-101957_041501_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with multiple lanes in each direction runs straight; the ego vehicle proceeds in the left lane on smooth pavement, with light same-direction flow and a low hedge median separating steadier oncoming traffic. Far ahead in the ego lane, a small car continues away at similar speed, serving as a distant lead without affecting pace. To the right beyond the median, a line of white vans and a green box truck approach in the oncoming lanes, moving slowly in mild congestion and remaining segregated from the ego path. An overhead round sign posts a 50 speed limit.", "hazard_reasoning": "No hazards are visible in the scene; the road is clear and driving conditions are normal, so the driver can maintain course safely."}
{"id": "train_02574", "split": "train", "clip_key": "2020-0228-102841_073736_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "073736"}, "frames": ["2020-0228-102841_073736_movie_t-3.jpg", "2020-0228-102841_073736_movie_t-2.jpg", "2020-0228-102841_073736_movie_t-1.jpg", "2020-0228-102841_073736_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement runs beneath an elevated roadway, and traffic is moderate to heavy as vehicles queue toward an intersection. The white van directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle. A large box truck in the right adjacent lane draws level and creeps forward, limiting space to merge right. To the left, a black SUV and other cars in the neighboring lane move slowly toward the stop line. Pedestrians are visible on the left sidewalk near the junction.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The stopped van indicates the ego-vehicle must halt promptly to avoid a collision at the intersection, so the driver should stop immediately under this situation."}
{"id": "train_02575", "split": "train", "clip_key": "titan_clip_337_000342_movie", "source": {"subset": "titan", "scenario": "clip_337", "frame": "000342"}, "frames": ["titan_clip_337_000342_movie_t-3.jpg", "titan_clip_337_000342_movie_t-2.jpg", "titan_clip_337_000342_movie_t-1.jpg", "titan_clip_337_000342_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the stopped van.", "environment_perception": "An urban commercial street with a single narrow shared lane and block paving shows slow, light motor traffic but many pedestrians; there is no divider and storefronts line both sides. On the left side of the ego lane, a white van is stopped, partly intruding into the lane and narrowing the passage. A bicyclist is alongside at the left foreground traveling toward the camera along the curb, passing close to the ego vehicle and reducing clearance near the stopped van. Several pedestrians ahead walk along and across the roadway, some drifting near the ego path. Farther ahead, a small white utility vehicle proceeds slowly in the lane. A no-parking sign is visible on the left.", "hazard_reasoning": "There is a white van stopped on the left side of the ego lane. The van blocks part of the driving lane, so the driver should adjust their path to avoid a collision by steering around it carefully."}
{"id": "train_02576", "split": "train", "clip_key": "2020-0210-101957_032869_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "032869"}, "frames": ["2020-0210-101957_032869_movie_t-3.jpg", "2020-0210-101957_032869_movie_t-2.jpg", "2020-0210-101957_032869_movie_t-1.jpg", "2020-0210-101957_032869_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way multi-lane road with no physical median and smooth pavement approaches a signalized intersection; traffic is moderate and flows steadily. A white truck directly ahead in the ego lane slows as it nears the junction, constraining the ego car's pace. To the right ahead, a black SUV in the adjacent same-direction lane continues straight and gradually pulls ahead without encroaching. Farther ahead in the middle same-direction lane, a light-colored sedan proceeds through the intersection at a steady speed, remaining clear of the ego lane. The overhead traffic signal facing the ego direction shows green.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's reduction in speed may require sudden braking, so the driver should slow down to maintain a safe following distance."}
{"id": "train_02577", "split": "train", "clip_key": "titan_clip_852_000456_movie", "source": {"subset": "titan", "scenario": "clip_852", "frame": "000456"}, "frames": ["titan_clip_852_000456_movie_t-3.jpg", "titan_clip_852_000456_movie_t-2.jpg", "titan_clip_852_000456_movie_t-1.jpg", "titan_clip_852_000456_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street appears with a narrow single-lane shared roadway paved in bricks and lined by bollards; there is no centerline or median and no other vehicles, so traffic is light. A pedestrian ahead in the ego path crosses from the left to the right side of the street at walking pace, briefly occupying the lane. Another pedestrian on the left edge near the bollards walks toward the camera along the curb without stepping into the lane. Farther ahead on the right sidewalk, a couple of pedestrians walk away beside shopfronts, remaining off the carriageway. The corridor is tight with closely spaced bollards but otherwise clear.", "hazard_reasoning": "There is a pedestrian in front of the ego car, crossing the street from the left to right side. The pedestrian is stepping into the vehicle's path, so the driver should slow down to yield and ensure the pedestrian's safety."}
{"id": "train_02578", "split": "train", "clip_key": "2020-0207-151349_061871_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "061871"}, "frames": ["2020-0207-151349_061871_movie_t-3.jpg", "2020-0207-151349_061871_movie_t-2.jpg", "2020-0207-151349_061871_movie_t-1.jpg", "2020-0207-151349_061871_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction has smooth pavement and roadside mid-rise buildings, and traffic is heavy with a slow-moving queue. Ahead in the ego lane, a white sedan is stopped because of congestion further up the road, directly blocking the ego vehicle's path. Just to the right, a small truck carrying construction equipment travels slowly in the adjacent lane alongside, restricting any immediate move to the right. Farther ahead, a large box truck in the same direction creeps with the queue, contributing to the overall slowdown. Posts and barriers line the roadway, and no traffic signals are clearly visible.", "hazard_reasoning": "There is a white sedan that has stopped in the ego lane because of the traffic congestion ahead on the road. The driver must stop to avoid a rear-end collision due to sudden traffic buildup."}
{"id": "train_02579", "split": "train", "clip_key": "titan_clip_247_000060_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_247_000060_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_247_000060_movie_t-3_augB1.jpg", "titan_clip_247_000060_movie_t-2_augB1.jpg", "titan_clip_247_000060_movie_t-1_augB1.jpg", "titan_clip_247_000060_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single marked lane and no median runs between shopfronts, the pavement smooth and traffic light. Ahead near the center distance, a pedestrian in a black shirt and black pants crosses mid-block from left to right toward the sidewalk, potentially entering the ego vehicle's path. A red car stands stopped along the left curb ahead, narrowing the usable lane and prompting cautious spacing as the ego approaches. A few other pedestrians are visible farther ahead near the cross street but remain on the sidewalks.", "hazard_reasoning": "There is a pedestrian in black shirt and black pants, crossing the street in the middle of the road to the right side. The driver should slow down to maintain a safe distance and avoid a potential collision with the crossing pedestrian."}
{"id": "train_02580", "split": "train", "clip_key": "2020-0227-104226_038567_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "038567"}, "frames": ["2020-0227-104226_038567_movie_t-3.jpg", "2020-0227-104226_038567_movie_t-2.jpg", "2020-0227-104226_038567_movie_t-1.jpg", "2020-0227-104226_038567_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop, traffic congested ahead", "environment_perception": "An urban two-way street has one lane per direction with a solid center line, dry pavement, and light opposing flow but a slow queue in the ego lane. A silver van directly ahead in the ego lane is stopped, queuing because of congestion and holding the ego car. Farther ahead in the same lane, a canvas-covered light truck creeps forward, keeping the line slow. In the oncoming lane to the right, a dark van approaches and passes steadily without conflict. A fenced sidewalk and a marked bicycle lane run along the left, and no pedestrians or obstacles enter the roadway.", "hazard_reasoning": "There is a silver van stopped in the ego lane in front of the ego car, because of traffic congestion. The driver should prepare to stop due to slowed traffic ahead to avoid a collision."}
{"id": "train_02581", "split": "train", "clip_key": "titan_clip_504_000276_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_504_000276_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_504_000276_movie_t-3_augB1.jpg", "titan_clip_504_000276_movie_t-2_augB1.jpg", "titan_clip_504_000276_movie_t-1_augB1.jpg", "titan_clip_504_000276_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrians", "environment_perception": "A narrow urban backstreet with a single two-way lane lacks lane markings and sidewalks, with a metal guardrail and fenced lot on the right and worn pavement with scattered litter and a manhole; traffic is otherwise light with no vehicles. Ahead in the ego lane, a group of four pedestrians, two wearing white T-shirts and two in black pants, walks together in the middle of the road toward the ego vehicle while talking, because there is no sidewalk, so they occupy the travel way and constrain the car's pace. No notable traffic signals or posted speeds are visible, and the route is lined closely by building fronts.", "hazard_reasoning": "There are four pedestrians, two males, and two females, two wearing white t-shirts, two wearing black pants, talking together in a group, and walking in the middle of the road towards the ego-car, because there is no sidewalk. The group in the road poses a collision risk, so the driver should manoeuvre carefully around them."}
{"id": "train_02582", "split": "train", "clip_key": "2020-0129-105040_045344_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "045344"}, "frames": ["2020-0129-105040_045344_movie_t-3.jpg", "2020-0129-105040_045344_movie_t-2.jpg", "2020-0129-105040_045344_movie_t-1.jpg", "2020-0129-105040_045344_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated expressway with two lanes in the ego direction, a guardrail on the right, and dry pavement; traffic is heavy and slow. A silver small car directly ahead in the ego lane inches forward and sets the pace, rather than accelerating. To the left, a blue heavy truck keeps alongside at low speed beside the ego vehicle, reducing lateral space. Ahead-left, a white van in the adjacent lane creeps with the queue and remains slightly ahead, limiting easy merging. Farther ahead the stream of vehicles compresses near an intersection beneath the viaduct.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02583", "split": "train", "clip_key": "titan_clip_939_000030_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_939_000030_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_939_000030_movie_t-3_augB1.jpg", "titan_clip_939_000030_movie_t-2_augB1.jpg", "titan_clip_939_000030_movie_t-1_augB1.jpg", "titan_clip_939_000030_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of crossing pedestrian", "environment_perception": "A narrow urban street with a single unmarked lane runs between storefronts, the pavement slightly worn and dry, and traffic is very light with no vehicles visible. Ahead in the middle of the road, a pedestrian wearing black pants crosses from the left to the right, moving across the ego lane and briefly occupying the path. Another pedestrian walks along the right sidewalk ahead, continuing forward and staying clear of the roadway. A third person stands near the left curb farther ahead by a shop entrance close to the lane edge. A small red plastic tray lies at the right curb near the camera but does not protrude into the lane.", "hazard_reasoning": "There is a pedestrian wearing black pants and crossing the street in the middle of the road, from the left side to the right side. The pedestrian's movement across lanes poses a collision risk, so the driver should be prepared to adjust speed or direction in response."}
{"id": "train_02584", "split": "train", "clip_key": "titan_clip_241_000396_movie", "source": {"subset": "titan", "scenario": "clip_241", "frame": "000396"}, "frames": ["titan_clip_241_000396_movie_t-3.jpg", "titan_clip_241_000396_movie_t-2.jpg", "titan_clip_241_000396_movie_t-1.jpg", "titan_clip_241_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial street with a narrow single-lane carriageway on brick paving, no median, has light, slow-moving traffic. A pedestrian in a white shirt carrying a handbag walks ahead slightly right in the roadway away from the ego-vehicle, occupying the lane and constraining the approach. A dark sedan ahead on the right proceeds slowly along the lane near the storefronts and the pedestrian, further limiting the ego-car's pace. A small van is stopped at the right curb near the sedan, narrowing the passage and creating a pinch point. Bicycles are parked along the left curb while other pedestrians stay on the sidewalks.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and walking, on the right side of the road, away from the ego-car. To avoid a potential collision, the driver should manoeuvre around the pedestrian carefully."}
{"id": "train_02585", "split": "train", "clip_key": "titan_clip_1186_000348_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1186_000348_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1186_000348_movie_t-3_augB1.jpg", "titan_clip_1186_000348_movie_t-2_augB1.jpg", "titan_clip_1186_000348_movie_t-1_augB1.jpg", "titan_clip_1186_000348_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban multi-lane road with tall buildings and smooth pavement runs straight, and traffic flows at a moderate, steady pace in the same direction. A large truck is stopped along the left curb, slightly narrowing the near lane. Ahead in the center of the path, a motorcycle travels forward from near-midrange, keeping pace with traffic and shaping the ego vehicle's following distance. Farther ahead in the same lane, a white SUV proceeds steadily, forming the main vehicle the ego follows. In the adjacent right lane, a black hatchback continues forward slightly faster. On the far left, a man with gray hair in a black shirt and gray pants stands beside the parked truck close to the travel lane.", "hazard_reasoning": "There is a man with gray hair, wearing a black shirt and gray pants, standing on the left side of the road, because he is standing beside a parked truck. The pedestrian's position behind the truck limits visibility and could lead him to step into traffic unexpectedly, so the driver should manoeuvre around him."}
{"id": "train_02586", "split": "train", "clip_key": "titan_clip_1213_000132_movie", "source": {"subset": "titan", "scenario": "clip_1213", "frame": "000132"}, "frames": ["titan_clip_1213_000132_movie_t-3.jpg", "titan_clip_1213_000132_movie_t-2.jpg", "titan_clip_1213_000132_movie_t-1.jpg", "titan_clip_1213_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with no centerline runs straight between buildings; the dry, slightly worn asphalt and the absence of moving vehicles make traffic light. On the right side ahead, a pedestrian wearing a white shirt and black pants walks away along the road edge, close to the curb and potentially edging into the travel path. Farther ahead near the middle of the lane, another pedestrian moves away in the same direction and could constrain the ego vehicle's pace. A bicycle is parked at the right curb, and a black SUV sits in a recessed driveway on the left, both static and narrowing the roadside.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking along the right side of the road, away from the ego car. The pedestrian could step into the lane unexpectedly, so you should slow down to maintain a safe distance."}
{"id": "train_02587", "split": "train", "clip_key": "titan_clip_260_000504_movie", "source": {"subset": "titan", "scenario": "clip_260", "frame": "000504"}, "frames": ["titan_clip_260_000504_movie_t-3.jpg", "titan_clip_260_000504_movie_t-2.jpg", "titan_clip_260_000504_movie_t-1.jpg", "titan_clip_260_000504_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian on road", "environment_perception": "A narrow urban residential street runs straight with a single undivided lane and smooth pavement, and traffic is very light with no moving vehicles in view. A pedestrian carrying a backpack walks away from the ego vehicle along the left side ahead, moving steadily in the lane and potentially occupying the ego path. Bicycles and small scooters are parked tightly along both curbs, reducing shoulder space but remaining stationary. No signals or salient signs are visible in the scene.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking on the left side of the road away from the ego car. This person could step into the lane unexpectedly, so the driver should yield to ensure the pedestrian's safety."}
{"id": "train_02588", "split": "train", "clip_key": "2020-0204-150838_030087_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_030087_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_030087_movie_t-3_augB1.jpg", "2020-0204-150838_030087_movie_t-2_augB1.jpg", "2020-0204-150838_030087_movie_t-1_augB1.jpg", "2020-0204-150838_030087_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "A dense urban arterial with multiple same-direction lanes and smooth pavement runs beneath an elevated roadway, and traffic is heavy and slow as vehicles queue toward a large intersection. Directly ahead in the ego lane, a white van slows and then creeps forward because of congestion, constraining the ego car's pace. In the lane to the left, a black van idles alongside in the queue, keeping close spacing that discourages lane changes. Ahead-right, a covered flatbed truck rolls slowly in the right lane parallel to the ego vehicle without encroaching. Large zebra crosswalk markings span the intersection area.", "hazard_reasoning": "There is a white van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. Therefore, the driver must stop to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_02589", "split": "train", "clip_key": "2020-0225-102455_001922_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "001922"}, "frames": ["2020-0225-102455_001922_movie_t-3.jpg", "2020-0225-102455_001922_movie_t-2.jpg", "2020-0225-102455_001922_movie_t-1.jpg", "2020-0225-102455_001922_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way road with a painted median runs between mid-rise buildings; the pavement is smooth and traffic is moderate with brief slowing near a side street. A white van ahead in the ego lane slows because a black SUV in the adjacent left curb lane turns left into a side street, momentarily constraining the ego vehicle's pace. An oncoming gray car in the right-side lanes approaches beyond the median and continues past without interaction. A small white microvan is stopped near the left curb ahead. A 50 speed limit sign stands on a pole to the left.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because there is a SUV turning left in the left lane. The van's reduced speed could force the driver to brake abruptly to maintain a safe following distance."}
{"id": "train_02590", "split": "train", "clip_key": "2020-0127-132751_024940_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "024940"}, "frames": ["2020-0127-132751_024940_movie_t-3.jpg", "2020-0127-132751_024940_movie_t-2.jpg", "2020-0127-132751_024940_movie_t-1.jpg", "2020-0127-132751_024940_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane same-direction road runs beneath an elevated expressway, with smooth red pavement and a painted divider; traffic is moderate and queues near an intersection. Ahead in the ego lane, a white hatchback is stopped for the red traffic light, holding the ego vehicle. In the adjacent right lane ahead-right, a dark hatchback and several cars creep forward in a slow queue toward the intersection while staying in their lane and not merging. On the left sidewalk, a pedestrian walks toward the camera along the curb without approaching the roadway.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid a collision since the vehicle ahead is stationary at the red signal."}
{"id": "train_02591", "split": "train", "clip_key": "2020-0131-135401_078946_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "078946"}, "frames": ["2020-0131-135401_078946_movie_t-3.jpg", "2020-0131-135401_078946_movie_t-2.jpg", "2020-0131-135401_078946_movie_t-1.jpg", "2020-0131-135401_078946_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a planted median and smooth pavement approaches a wide signalized intersection, and traffic is light to moderate under clear daylight. Several cars travel across ahead from right to left on the cross street, occupying the junction and controlling the ego vehicle's progress. On the opposite carriageway to the right, oncoming vehicles continue straight through the intersection, remaining separated by the median and not interacting. A dark car is paused at the near left edge by the crosswalk, partially in view but outside the ego lane. Overhead traffic lights and blue directional guide signs span the road, and a prohibitory turn sign stands on the median.", "hazard_reasoning": "There are no immediate hazards as traffic is controlled by red signals and no road users are crossing. Maintain normal driving and remain alert for signal changes."}
{"id": "train_02592", "split": "train", "clip_key": "2020-0204-150838_060855_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_060855_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_060855_movie_t-3_augB1.jpg", "2020-0204-150838_060855_movie_t-2_augB1.jpg", "2020-0204-150838_060855_movie_t-1_augB1.jpg", "2020-0204-150838_060855_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield to merging bus", "environment_perception": "An urban two-lane road with smooth pavement curves left beside warehouse buildings and a guarded sidewalk, and traffic appears light to moderate with only same-direction vehicles visible. In the right lane just ahead, a large white box truck slows, constrained by a white coach bus farther ahead that is merging into the right lane. The bus moves in from the left side of the roadway and occupies the lane ahead, potentially entering the ego vehicle's path and setting the pace. No signals or unusual signs are prominent, and no oncoming traffic or obstacles appear.", "hazard_reasoning": "There is a white truck slowing in the right lane because of the bus merging ahead on the road. You should Yield to the merging bus to avoid abrupt braking and maintain safe traffic flow."}
{"id": "train_02593", "split": "train", "clip_key": "2020-0220-102630_109132_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "109132"}, "frames": ["2020-0220-102630_109132_movie_t-3.jpg", "2020-0220-102630_109132_movie_t-2.jpg", "2020-0220-102630_109132_movie_t-1.jpg", "2020-0220-102630_109132_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban Japanese street is shown, a two-lane undivided road with dry, well-kept pavement and light traffic. Directly ahead in the same left lane, a gray box truck pulls away and speeds up in response to traffic conditions ahead, setting the pace and partially blocking the view forward. In the opposite right lane, a few oncoming cars pass steadily without conflict. Parked vehicles sit along the right-side curb inside a parking area but do not intrude into the roadway.", "hazard_reasoning": "A gray truck is speeding up in front of the ego-vehicle due to traffic conditions ahead. Follow the vehicle ahead to adapt speed safely and avoid potential abrupt changes in traffic flow."}
{"id": "train_02594", "split": "train", "clip_key": "2020-0207-151349_085008_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "085008"}, "frames": ["2020-0207-151349_085008_movie_t-3.jpg", "2020-0207-151349_085008_movie_t-2.jpg", "2020-0207-151349_085008_movie_t-1.jpg", "2020-0207-151349_085008_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for crossing pedestrian", "environment_perception": "An urban two-way arterial runs beneath an elevated expressway, with a barriered median and dry pavement; traffic is light as the ego car approaches a crosswalked intersection from the leftmost same-direction lane. A small blue hatchback ahead moves from the left across the intersection, turning right and traversing the near crosswalk in front of the ego lane, briefly blocking its path. A woman in a purple coat and blue pants crosses the near crosswalk from left to right ahead of the vehicle, so the ego must wait. Several other pedestrians walk on both sidewalks and linger near the corners without entering the lane. A no-U-turn sign is posted on the right.", "hazard_reasoning": "There is a lady, wearing a purple coat and blue pants, and crossing the street from the left side to the right side. Driver should stop for the pedestrian to cross safely."}
{"id": "train_02595", "split": "train", "clip_key": "2020-0210-101957_078840_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "078840"}, "frames": ["2020-0210-101957_078840_movie_t-3.jpg", "2020-0210-101957_078840_movie_t-2.jpg", "2020-0210-101957_078840_movie_t-1.jpg", "2020-0210-101957_078840_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In a suburban setting, the ego car moves along a narrow two-lane road with a solid center line, guardrails, and dry, intact pavement; traffic is light and the oncoming lane remains clear. Directly ahead in the ego lane, a large truck begins to accelerate from a slow roll, constraining the ego vehicle's pace. A small side street opens from the left near the truck but no vehicles join. The road curves gently to the right past houses, and no signals or notable signs are visible.", "hazard_reasoning": "There is a white truck beginning to accelerate in front of the ego car in the ego lane. The green light indicates the vehicle ahead is resuming movement, so you should also start moving to maintain safe following distance and traffic flow under this situation."}
{"id": "train_02596", "split": "train", "clip_key": "2020-0203-114632_078096_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "078096"}, "frames": ["2020-0203-114632_078096_movie_t-3.jpg", "2020-0203-114632_078096_movie_t-2.jpg", "2020-0203-114632_078096_movie_t-1.jpg", "2020-0203-114632_078096_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban commercial street with a single lane each way and a wide painted chevron median stretches ahead; the asphalt is dry and smooth and traffic is light to moderate. A gray van ahead in the ego lane drives steadily away from the camera, effectively setting the pace. To the right, an oncoming dark van approaches in its lane beyond the chevron markings and passes without conflict. Farther ahead, a small group of oncoming cars continues near an intersection. Overhead traffic signals are visible at the upcoming junction, and railings and trees line the left sidewalk.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02597", "split": "train", "clip_key": "titan_clip_76_000372_movie", "source": {"subset": "titan", "scenario": "clip_76", "frame": "000372"}, "frames": ["titan_clip_76_000372_movie_t-3.jpg", "titan_clip_76_000372_movie_t-2.jpg", "titan_clip_76_000372_movie_t-1.jpg", "titan_clip_76_000372_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with no centerline runs between close buildings; the pavement is smooth with some leaves near the curb, and traffic is light. Ahead on the right edge, a white van is stopped partly within the lane, narrowing the available width for the ego vehicle. On the left side of the road a pedestrian pushes a trolley toward the ego car, walking along the edge and potentially moving into the ego lane. Farther ahead on the left, stacked cardboard boxes and metal racks sit by the building frontage close to the roadway but remain stationary.", "hazard_reasoning": "There is a pedestrian pushing a trolley, walking on the left side of the road, towards the ego car. The driver should manoeuvre carefully around the pedestrian because they are approaching the vehicle's path."}
{"id": "train_02598", "split": "train", "clip_key": "titan_clip_1218_000096_movie", "source": {"subset": "titan", "scenario": "clip_1218", "frame": "000096"}, "frames": ["titan_clip_1218_000096_movie_t-3.jpg", "titan_clip_1218_000096_movie_t-2.jpg", "titan_clip_1218_000096_movie_t-1.jpg", "titan_clip_1218_000096_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single left-hand travel lane and no median runs between storefronts; the pavement looks smooth and traffic proceeds slowly with no oncoming vehicles in view. A small white light truck ahead in the ego lane creeps forward in the center, constraining the ego vehicle's pace. A pedestrian wearing a white shirt steps from the right sidewalk into the middle of the road and walks leftward across ahead of the ego vehicle, occupying its path. A white minivan stands along the left edge near the ego, encroaching slightly and reducing clearance.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, crossing the street in the middle of the road, from the right side to the left side. The driver's view ahead is partially blocked by a parked truck, so reducing speed is necessary to safely react to unexpected pedestrian movements."}
{"id": "train_02599", "split": "train", "clip_key": "titan_clip_128_000120_movie", "source": {"subset": "titan", "scenario": "clip_128", "frame": "000120"}, "frames": ["titan_clip_128_000120_movie_t-3.jpg", "titan_clip_128_000120_movie_t-2.jpg", "titan_clip_128_000120_movie_t-1.jpg", "titan_clip_128_000120_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street with no median runs between midrise buildings; the pavement is smooth and traffic is light, with the ego vehicle traveling in the left lane. Ahead in the same lane a white van slows and turns left into a side street, briefly blocking the path. At the crosswalk just beyond, two pedestrians from the right step into the crossing and move leftward across the ego lane. A dark van is stopped along the left curb near the crosswalk, narrowing the usable lane. Sidewalks are lined with shops, trees, and parked bicycles, and no traffic signals are visible.", "hazard_reasoning": "There is a white van turning left in the ego lane, in front of the ego car. The van's turn could slow or block the ego-vehicle's path, so the driver should slow down to maintain a safe following distance."}
{"id": "train_02600", "split": "train", "clip_key": "2020-0204-150838_034864_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "034864"}, "frames": ["2020-0204-150838_034864_movie_t-3.jpg", "2020-0204-150838_034864_movie_t-2.jpg", "2020-0204-150838_034864_movie_t-1.jpg", "2020-0204-150838_034864_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way avenue with no median leads into a wide signalized intersection; the pavement is dry and traffic is moderate. Vehicles travel on the left side of the roadway. A white van directly ahead in the ego lane accelerates away through the intersection under a green light, setting the pace for the ego vehicle. A large city bus in the adjacent right lane proceeds forward alongside, limiting any rightward merge. A black van slightly ahead to the left angles left across the intersection as it turns, moving away from the ego lane. The overhead signal facing the ego direction shows green.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02601", "split": "train", "clip_key": "2020-0131-135401_031090_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "031090"}, "frames": ["2020-0131-135401_031090_movie_t-3.jpg", "2020-0131-135401_031090_movie_t-2.jpg", "2020-0131-135401_031090_movie_t-1.jpg", "2020-0131-135401_031090_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked hatchback.", "environment_perception": "An urban two-way street with one narrow lane in each direction has smooth pavement and curbside parking on both sides, and traffic moves at a moderate pace as the ego vehicle continues straight. A white minivan ahead in the ego lane travels slowly and sets the pace. A yellow hatchback is parked along the left curb just ahead, matching the caption and further narrowing the usable lane. At the right curb, a motorcyclist with a scooter beside him waits to pull out and may merge into the ego lane. A no-parking sign is visible on the left sidewalk.", "hazard_reasoning": "There is a yellow hatchback parked on the left side of the road. This parked vehicle reduces the available lane width and may obscure oncoming traffic, so the driver should carefully manoeuvre around it to maintain safety."}
{"id": "train_02602", "split": "train", "clip_key": "titan_clip_160_000030_movie", "source": {"subset": "titan", "scenario": "clip_160", "frame": "000030"}, "frames": ["titan_clip_160_000030_movie_t-3.jpg", "titan_clip_160_000030_movie_t-2.jpg", "titan_clip_160_000030_movie_t-1.jpg", "titan_clip_160_000030_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban commercial street with no median and smooth pavement runs straight between shopfronts, and there is no visible motor traffic. A pedestrian in a black shirt carrying a backpack walks away from the ego-vehicle along the left edge, close to the lane and potentially entering the path. Other pedestrians appear farther ahead near storefronts on both sides, moving along the edges and not entering the lane. Numerous signboards and displays jut from the shops, slightly narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a backpack, and walking, on the left side of the road, away from the ego-car. The pedestrian may change direction or step onto the road unexpectedly, so the driver should carefully manoeuvre to maintain safe clearance."}
{"id": "train_02603", "split": "train", "clip_key": "2020-0213-143552_028968_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "028968"}, "frames": ["2020-0213-143552_028968_movie_t-3.jpg", "2020-0213-143552_028968_movie_t-2.jpg", "2020-0213-143552_028968_movie_t-1.jpg", "2020-0213-143552_028968_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian carefully.", "environment_perception": "An urban side street in Japan appears, a narrow single-lane road without a centerline beside tiled buildings, with dry pavement and no moving traffic. The ego-vehicle travels slowly toward a right corner where the building blocks sightlines, creating a blind junction. Ahead on the left edge, a pedestrian wearing a brown coat walks away along the curb in the same direction as the ego car and stays near the storefronts, potentially close to the ego lane as the space narrows. Several parked bicycles and rectangular planters line the left curb, reducing clearance near the pedestrian.", "hazard_reasoning": "There is a pedestrian wearing a brown coat and walking, on the right side of the road, away from the ego-car. The pedestrian is close to the roadway and may step into your path unexpectedly, so you should manoeuvre around them carefully."}
{"id": "train_02604", "split": "train", "clip_key": "2020-0218-151547_024976_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "024976"}, "frames": ["2020-0218-151547_024976_movie_t-3.jpg", "2020-0218-151547_024976_movie_t-2.jpg", "2020-0218-151547_024976_movie_t-1.jpg", "2020-0218-151547_024976_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Start moving", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, the pavement smooth and traffic heavy but creeping before beginning to loosen. The ego vehicle follows a gray sedan directly ahead in the left lane; it pauses and then starts to pull away as congestion ahead clears, setting the ego car's pace. To the right, a silver minivan slightly ahead advances slowly in the adjacent same-direction lane, remaining parallel without changing lanes. A darker minivan along the near right edge inches forward beside the ego vehicle in its lane. Pedestrians walk on the left sidewalk behind a guardrail, remaining clear of the roadway.", "hazard_reasoning": "There is a gray sedan stopped and starting to drive away from the ego car, in the ego lane because of traffic congestion ahead is clearing. Because the sedan will resume motion in front of the ego-vehicle, the driver should start moving to maintain safe spacing and traffic flow."}
{"id": "train_02605", "split": "train", "clip_key": "2020-0129-105040_052672_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "052672"}, "frames": ["2020-0129-105040_052672_movie_t-3.jpg", "2020-0129-105040_052672_movie_t-2.jpg", "2020-0129-105040_052672_movie_t-1.jpg", "2020-0129-105040_052672_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway with two same-direction lanes curves gently right between tall sound barriers, the pavement smooth and dry, and traffic remains light. A white van ahead in the right lane drives away from the ego vehicle, continuing smoothly because the road ahead is clear and not affecting the left lane. No other moving vehicles are nearby. Continuous guardrails line the edges and an overpass structure appears ahead, with the high barriers and the right-hand curve limiting sight distance.", "hazard_reasoning": "There is a white van driving in the right lane, away from the ego car, because the road ahead is clear. Follow the vehicle ahead to maintain a safe distance in case it brakes suddenly."}
{"id": "train_02606", "split": "train", "clip_key": "titan_clip_1385_000240_movie", "source": {"subset": "titan", "scenario": "clip_1385", "frame": "000240"}, "frames": ["titan_clip_1385_000240_movie_t-3.jpg", "titan_clip_1385_000240_movie_t-2.jpg", "titan_clip_1385_000240_movie_t-1.jpg", "titan_clip_1385_000240_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban commercial side street with a single narrow lane and no centerline runs past dense storefronts; the asphalt is worn but clear and there is no visible motor traffic ahead. A pedestrian in a white T-shirt and brown shorts carrying a handbag crosses from the left into the middle of the road ahead as they head toward a shop, occupying the ego path. Another pedestrian stands at the curb by the right-side storefront near the lane edge, stationary and close to the vehicle's path. A third person walks along the left edge of the roadway parallel to traffic without crossing.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and brown shorts, carrying a handbag, and crossing the street from the left side, in the middle of the road, because they are moving towards a shop. You should yield to allow the pedestrian to cross safely before proceeding."}
{"id": "train_02607", "split": "train", "clip_key": "2020-0204-150838_011991_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "011991"}, "frames": ["2020-0204-150838_011991_movie_t-3.jpg", "2020-0204-150838_011991_movie_t-2.jpg", "2020-0204-150838_011991_movie_t-1.jpg", "2020-0204-150838_011991_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement runs between tall office buildings, and traffic is heavy and queued at an intersection under a red signal; a curb with shrubs lines the left edge. Directly ahead in the ego lane a black sedan is stopped because the traffic light is red, holding the ego car in place. To the right, a white minivan slightly ahead waits in its lane without moving. Farther ahead, a white van and several cars form a stationary queue across the lanes, constraining progress. The overhead signal facing the ego direction shows red.", "hazard_reasoning": "There is a black sedan stopping in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop immediately to maintain safe distance and avoid a rear-end collision at the stopped vehicle."}
{"id": "train_02608", "split": "train", "clip_key": "titan_clip_952_000234_movie", "source": {"subset": "titan", "scenario": "clip_952", "frame": "000234"}, "frames": ["titan_clip_952_000234_movie_t-3.jpg", "titan_clip_952_000234_movie_t-2.jpg", "titan_clip_952_000234_movie_t-1.jpg", "titan_clip_952_000234_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van.", "environment_perception": "A narrow urban alley with a single two-way lane and no divider runs between buildings; the asphalt is dry and traffic is light, though parked vehicles make the corridor tight. A gray van is parked on the right just ahead of the ego car, constricting the lane as the vehicle approaches. Another gray van stands along the left curb near the camera with a loading ramp partly extending toward the roadway, further narrowing the path. Far ahead in the center of the street, a white van is stationary facing the ego direction, limiting the remaining space for opposing flow. A person crouches at the left edge beside a cone and the ramp close to the lane.", "hazard_reasoning": "There is a gray van parked on the right side of the road, in front of the ego car. This van reduces the available roadway and may obscure other road users, so be aware of its presence to avoid potential conflict."}
{"id": "train_02609", "split": "train", "clip_key": "titan_clip_42_000378_movie", "source": {"subset": "titan", "scenario": "clip_42", "frame": "000378"}, "frames": ["titan_clip_42_000378_movie_t-3.jpg", "titan_clip_42_000378_movie_t-2.jpg", "titan_clip_42_000378_movie_t-1.jpg", "titan_clip_42_000378_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street forms a single narrow shared lane with no centerline or divider, paved with interlocking bricks in good condition; motor traffic is light and slow. Several pedestrians ahead in the lane walk along and across the path, constraining the ego vehicle's progress. On the right side, a pedestrian in a white shirt and black pants pulls a piece of luggage and walks toward the ego car along the edge of the lane. On the left near the foreground, a man in an orange shirt walks toward the camera and drifts slightly into the travel path. Storefront displays, cones, and a parked bicycle against the right wall narrow the corridor but remain at the edges.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, pulling a piece of luggage, and walking on the right side of the road, towards the ego car. The pedestrian is approaching the vehicle's path, so slowing down will allow enough reaction time and help avoid a collision."}
{"id": "train_02610", "split": "train", "clip_key": "2020-0207-101955_046721_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "046721"}, "frames": ["2020-0207-101955_046721_movie_t-3.jpg", "2020-0207-101955_046721_movie_t-2.jpg", "2020-0207-101955_046721_movie_t-1.jpg", "2020-0207-101955_046721_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction and no physical median runs through a wide intersection; the dry pavement looks smooth and traffic is moderate and moving. Ahead in the same-direction left lane, a black sedan in front of the ego car slows because a light-colored car farther ahead is changing left into the ego lane, briefly constraining the ego vehicle's pace. To the right near the curb in the adjacent same-direction lane, a silver hatchback edges forward and may merge toward the ego lane after the crossing. In the opposing lanes to the right side of the roadway, oncoming vehicles, including a truck, continue straight without interacting.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because a vehicle ahead is lane changing into the ego lane. You should slow down to accommodate the abrupt speed reduction caused by the merging vehicle."}
{"id": "train_02611", "split": "train", "clip_key": "2020-0131-135401_019259_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "019259"}, "frames": ["2020-0131-135401_019259_movie_t-3.jpg", "2020-0131-135401_019259_movie_t-2.jpg", "2020-0131-135401_019259_movie_t-1.jpg", "2020-0131-135401_019259_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road approaches a junction under an elevated structure; the pavement is dry and traffic is heavy with a slow queue in the right lane. A black SUV ahead in the ego car's left lane slows because of congestion ahead, setting the ego vehicle's pace. To the right, a large dump truck alongside in the adjacent lane is nearly stopped beside a row of flexible posts. Farther ahead along the right lane, multiple cars creep forward in a line, contributing to the bottleneck. Overhead signs indicate straight ahead and a posted speed of 50.", "hazard_reasoning": "There is a black SUV slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. Drivers should slow down to maintain a safe distance and avoid abrupt braking due to the congestion."}
{"id": "train_02612", "split": "train", "clip_key": "titan_clip_966_000468_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_966_000468_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_966_000468_movie_t-3_augB1.jpg", "titan_clip_966_000468_movie_t-2_augB1.jpg", "titan_clip_966_000468_movie_t-1_augB1.jpg", "titan_clip_966_000468_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban divided roadway with two same-direction lanes is separated from the opposite carriageway by a planted median and railing; the pavement looks smooth and traffic stays light to moderate. A white minivan ahead in the right lane continues straight at a steady pace. On the left edge ahead, a small flatbed truck is parked partly intruding into the left lane, and a pedestrian in black pants walks away from the ego along the road beside it because the parked vehicle blocks the curbside space. Construction equipment and materials line the left sidewalk, further narrowing the approach near the parked truck.", "hazard_reasoning": "There is a pedestrian wearing black pants and walking on the left side of the road, away from the ego-car, because of the parked vehicle. Because the pedestrian is near the roadway and partially obscured by the parked truck, the driver should manoeuvre carefully to avoid a potential collision."}
{"id": "train_02613", "split": "train", "clip_key": "2020-0213-143552_032353_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_032353_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_032353_movie_t-3_augB1.jpg", "2020-0213-143552_032353_movie_t-2_augB1.jpg", "2020-0213-143552_032353_movie_t-1_augB1.jpg", "2020-0213-143552_032353_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban two-way street with one lane each direction and no median shows smooth pavement and light traffic as the ego vehicle proceeds in the left lane toward a zebra crossing. Ahead in the same lane, a small delivery truck is stopped near the center of the road, and two people stand together beside it in the roadway, constraining the ego vehicle's path. At the near left curb, a pedestrian stands by a parked white car and remains stationary off the lane. A pedestrian crossing sign on the left highlights the crosswalk, while parked vehicles along both curbs narrow the usable roadway.", "hazard_reasoning": "There are two people standing together in the middle of the road, because they are standing beside a parked truck. These pedestrians are partially hidden by the parked truck and may step into the lane unexpectedly, so the driver should carefully manoeuvre around the parked truck to avoid a collision."}
{"id": "train_02614", "split": "train", "clip_key": "2020-0203-154554_038897_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "038897"}, "frames": ["2020-0203-154554_038897_movie_t-3.jpg", "2020-0203-154554_038897_movie_t-2.jpg", "2020-0203-154554_038897_movie_t-1.jpg", "2020-0203-154554_038897_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene under an elevated roadway shows two same-direction lanes separated by a yellow line, with a concrete wall on the left; the pavement is dry and traffic is slow and congested. Directly ahead in the ego lane a white box truck slows due to congestion, constraining the ego vehicle's pace. In the adjacent right lane slightly ahead, a silver van moves forward slowly alongside. Farther ahead in that right lane, two small vans creep toward the same queue, maintaining short gaps.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane, due to traffic congestion. The driver should reduce speed to maintain a safe following distance and avoid a rear-end collision under these slowing conditions."}
{"id": "train_02615", "split": "train", "clip_key": "2020-0214-102601_078410_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "078410"}, "frames": ["2020-0214-102601_078410_movie_t-3.jpg", "2020-0214-102601_078410_movie_t-2.jpg", "2020-0214-102601_078410_movie_t-1.jpg", "2020-0214-102601_078410_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban residential two-way road with a single lane in each direction runs ahead, divided by a yellow centerline on smooth pavement, and traffic is light. A black SUV ahead in the ego lane moves slowly, setting the pace as it approaches a roadside obstruction. On the left curb farther ahead, a silver van is parked with its rear open as it is being loaded, narrowing the usable lane and prompting following vehicles to proceed cautiously. No oncoming traffic is visible in the opposing lane.", "hazard_reasoning": "There is a silver van parked on the left side of the road, because it is being loaded. You should carefully manoeuvre to avoid colliding with the obstruction."}
{"id": "train_02616", "split": "train", "clip_key": "titan_clip_178_000102_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_178_000102_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_178_000102_movie_t-3_augB1.jpg", "titan_clip_178_000102_movie_t-2_augB1.jpg", "titan_clip_178_000102_movie_t-1_augB1.jpg", "titan_clip_178_000102_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with no median runs between buildings; the asphalt is smooth and traffic is light, but parked vehicles line the right curb and narrow the lane. Ahead in the ego path, a pedestrian in a white shirt walks away in the middle of the road, diverted there by a parked vehicle and occupying the lane. Farther ahead near the center, a small white truck appears stationary, further constricting passage. On the near right, another pedestrian stands at a building entrance close to the curb.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking in the middle of the road, away from the ego car, because of the parked vehicle. The driver should slow down to avoid a potential collision with the pedestrian crossing the lane."}
{"id": "train_02617", "split": "train", "clip_key": "2020-0131-135401_074118_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "074118"}, "frames": ["2020-0131-135401_074118_movie_t-3.jpg", "2020-0131-135401_074118_movie_t-2.jpg", "2020-0131-135401_074118_movie_t-1.jpg", "2020-0131-135401_074118_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision", "environment_perception": "Urban multi-lane arterial in a dense cityscape, pavement dry and intact, with heavy stop-and-go traffic that is currently stopped. A black hatchback directly ahead in the ego lane is stopped because of congestion and blocks the path. A large white box truck ahead-left sits stationary in the adjacent lane, constraining lateral space and forward view. A gray van alongside on the right creeps forward in its lane near the ego car, posing a possible merge conflict. An overhead gantry sign shows lane-direction arrows for through lanes and a right-turn lane.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, because of traffic congestion ahead. You should stop to avoid collision and maintain distance."}
{"id": "train_02618", "split": "train", "clip_key": "2020-0129-105040_020032_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "020032"}, "frames": ["2020-0129-105040_020032_movie_t-3.jpg", "2020-0129-105040_020032_movie_t-2.jpg", "2020-0129-105040_020032_movie_t-1.jpg", "2020-0129-105040_020032_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the lane-changing SUV", "environment_perception": "An urban multi-lane arterial with smooth pavement carries moderate same-direction traffic, with no physical median visible. A white SUV ahead-right changes from the ego lane to the lane on the left directly in front of the ego car, moving diagonally left. A small white hatchback farther ahead in the left-adjacent lane continues straight at a steady pace parallel to the ego path. A box truck and a bus farther ahead in the left lanes also proceed straight, forming a slower cluster that shapes the flow.", "hazard_reasoning": "There is a white SUV changing lanes from the ego lane to the left lane, in front of the ego car. The SUV's merge into the ego lane ahead may require the driver to adjust speed or take evasive action to maintain safe spacing."}
{"id": "train_02619", "split": "train", "clip_key": "2020-0203-154554_063339_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "063339"}, "frames": ["2020-0203-154554_063339_movie_t-3.jpg", "2020-0203-154554_063339_movie_t-2.jpg", "2020-0203-154554_063339_movie_t-1.jpg", "2020-0203-154554_063339_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A tree-lined urban arterial with one lane in each direction is divided by a wide painted chevron median; the pavement looks smooth and traffic is light. A pedestrian footbridge spans the road ahead. A small minivan ahead in the ego lane on the left proceeds straight at a steady pace, lightly setting the ego vehicle's speed. Two cars approach in the oncoming lane to the right, continuing straight within their lane and not encroaching on the ego path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02620", "split": "train", "clip_key": "titan_clip_1130_000468_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1130_000468_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1130_000468_movie_t-3_augB1.jpg", "titan_clip_1130_000468_movie_t-2_augB1.jpg", "titan_clip_1130_000468_movie_t-1_augB1.jpg", "titan_clip_1130_000468_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance", "environment_perception": "A narrow urban residential two-way street with smooth pavement runs between buildings on the left and a tree-lined fence on the right, with no median. Traffic is light and no vehicles are visible as the ego vehicle proceeds along the left side. A pedestrian in a white T-shirt and black pants walks ahead on the left side away from the ego car, occupying part of the travel path. Beside him, a person in a white top and teal pants also walks away along the left edge within the lane. Farther ahead, another pedestrian near the centerline continues in the same direction, further narrowing the usable space.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and black pants, walking on the left side of the road, away from the ego car. The driver should slow down to maintain a safe distance from the pedestrian and avoid a potential collision."}
{"id": "train_02621", "split": "train", "clip_key": "2020-0210-155354_046190_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "046190"}, "frames": ["2020-0210-155354_046190_movie_t-3.jpg", "2020-0210-155354_046190_movie_t-2.jpg", "2020-0210-155354_046190_movie_t-1.jpg", "2020-0210-155354_046190_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and a curbside fence runs straight under overhead guide signs, and traffic is heavy with a queue toward a signalized intersection. A silver van directly ahead in the ego lane is stopped at the red light, holding the ego vehicle. To the right, a black sedan alongside slows and joins the queue in its lane, posing no immediate merge. Farther ahead in the right lane, a white van is also stopped in line. The overhead traffic signal shows red, and lane-use signs indicate a left-turn lane at the left and through lanes ahead. A sidewalk with railings lines the left edge.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car, because of the red traffic lights. The driver needs to stop to avoid colliding with the halted vehicle ahead at the intersection."}
{"id": "train_02622", "split": "train", "clip_key": "2020-0203-114632_071951_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "071951"}, "frames": ["2020-0203-114632_071951_movie_t-3.jpg", "2020-0203-114632_071951_movie_t-2.jpg", "2020-0203-114632_071951_movie_t-1.jpg", "2020-0203-114632_071951_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban elevated two-lane road curves right, bounded by a high sound barrier on the left and a guardrail on the right; pavement is smooth and traffic is slow near a merge area marked by a gore. A silver van directly ahead in the ego lane slows because of congestion ahead and it constrains the ego car's speed as the lane tapers. To its right, a large white box truck in the adjacent lane also decelerates, leading a short queue that the ego lane must join. Farther ahead, a concrete mixer creeps forward in the right lane, adding to the bottleneck. Chevron alignment signs on the left highlight the rightward curve and approaching merge.", "hazard_reasoning": "There is a silver van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Driver should slow down to maintain a safe distance because the van is reducing speed due to congestion."}
{"id": "train_02623", "split": "train", "clip_key": "2020-0129-105040_074626_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "074626"}, "frames": ["2020-0129-105040_074626_movie_t-3.jpg", "2020-0129-105040_074626_movie_t-2.jpg", "2020-0129-105040_074626_movie_t-1.jpg", "2020-0129-105040_074626_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban residential two-way street with one lane each direction stretches ahead under clear skies; a solid yellow centerline divides intact pavement and traffic is light. A white van ahead in the left ego lane drives away from the camera at a steady pace, setting the gap to the next vehicle. Several cars are parked along the left curb ahead, close to the ego lane but stationary. On the right side, a black car is stopped at the curb in the oncoming lane near the camera and does not encroach on the ego path. No traffic signals or speed signs are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02624", "split": "train", "clip_key": "titan_clip_1278_000186_movie", "source": {"subset": "titan", "scenario": "clip_1278", "frame": "000186"}, "frames": ["titan_clip_1278_000186_movie_t-3.jpg", "titan_clip_1278_000186_movie_t-2.jpg", "titan_clip_1278_000186_movie_t-1.jpg", "titan_clip_1278_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street lined with midrise buildings has no marked lanes, the pavement looks smooth, and vehicular traffic is very light while pedestrian flow is moderate. Ahead in the roadway, several pedestrians walk away along the center and left, occupying the travel space and slowing the approach. On the right edge, a tall man in a blue shirt and gray pants walks away from the ego car along the curb, remaining within the lane. Near the middle ahead, a bicyclist rides away in the same direction toward the group, holding the center and constraining the path. A silver station wagon is parked along the left curb, narrowing the usable lane. No salient traffic signals are visible.", "hazard_reasoning": "There is a tall man wearing a blue shirt and gray pants and walking on the right side of the road, away from the ego car. The pedestrian may unexpectedly step further into the roadway, creating a collision risk if approached at current speed, so the driver should slow down to maintain a safe distance and reaction time."}
{"id": "train_02625", "split": "train", "clip_key": "2020-0203-114632_071951_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_071951_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_071951_movie_t-3_augB1.jpg", "2020-0203-114632_071951_movie_t-2_augB1.jpg", "2020-0203-114632_071951_movie_t-1_augB1.jpg", "2020-0203-114632_071951_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban elevated two-lane road curves right, bounded by a high sound barrier on the left and a guardrail on the right; pavement is smooth and traffic is slow near a merge area marked by a gore. A silver van directly ahead in the ego lane slows because of congestion ahead and it constrains the ego car's speed as the lane tapers. To its right, a large white box truck in the adjacent lane also decelerates, leading a short queue that the ego lane must join. Farther ahead, a concrete mixer creeps forward in the right lane, adding to the bottleneck. Chevron alignment signs on the left highlight the rightward curve and approaching merge.", "hazard_reasoning": "There is a silver van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Driver should slow down to maintain a safe distance because the van is reducing speed due to congestion."}
{"id": "train_02626", "split": "train", "clip_key": "titan_clip_435_000018_movie", "source": {"subset": "titan", "scenario": "clip_435", "frame": "000018"}, "frames": ["titan_clip_435_000018_movie_t-3.jpg", "titan_clip_435_000018_movie_t-2.jpg", "titan_clip_435_000018_movie_t-1.jpg", "titan_clip_435_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban backstreet with a single narrow undivided lane and block-paved surface runs between dense shopfronts; traffic is light and slow. The pavement looks intact but space is limited by curbside parking on the left and clutter near storefronts. A dark delivery truck ahead on the left is stopped for loading, protruding into the lane and constraining the ego car's path. Farther ahead, a pedestrian in a gray jacket walks away along the middle of the road because a parked vehicle narrows the side, and the person may stay in the ego lane. Beyond them, a small car continues ahead in the same direction and pulls away. A no entry sign marks a side alley on the left.", "hazard_reasoning": "There is a pedestrian wearing a gray jacket, walking in the middle of the road, away from the ego car, because of the parked vehicle. The driver should slow down to avoid colliding with the pedestrian who is forced into the traffic lane by the parked truck."}
{"id": "train_02627", "split": "train", "clip_key": "titan_clip_1140_000210_movie", "source": {"subset": "titan", "scenario": "clip_1140", "frame": "000210"}, "frames": ["titan_clip_1140_000210_movie_t-3.jpg", "titan_clip_1140_000210_movie_t-2.jpg", "titan_clip_1140_000210_movie_t-1.jpg", "titan_clip_1140_000210_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "be aware of cyclist", "environment_perception": "An urban residential street with a narrow two-way carriageway and no centerline extends ahead, the asphalt slightly worn and traffic light. An oncoming cyclist in a black T-shirt rides along the right edge toward the ego vehicle because there is no bicycle lane, approaching near the middle of the road and relevant to the ego path. A pedestrian ahead at the crosswalk moves leftward across the street, directly in the ego lane and constraining pace. A small white car sits parked at the curb on the right near buildings, narrowing lateral space at the approach.", "hazard_reasoning": "There is a cyclist wearing a black T-shirt and cycling on the right side of the road, towards the ego car, because of the lack of a bicycle lane. The lack of a dedicated bicycle lane brings the cyclist into the vehicle's path, so the driver should be aware of the cyclist to avoid a potential collision."}
{"id": "train_02628", "split": "train", "clip_key": "titan_clip_1214_000414_movie", "source": {"subset": "titan", "scenario": "clip_1214", "frame": "000414"}, "frames": ["titan_clip_1214_000414_movie_t-3.jpg", "titan_clip_1214_000414_movie_t-2.jpg", "titan_clip_1214_000414_movie_t-1.jpg", "titan_clip_1214_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way back street with buildings tight to the curb has no median or sidewalk and slightly worn pavement, and traffic is light. An oncoming black van approaches along the right side of the roadway, moving slowly and passing close, which temporarily constrains space for the ego car. On the left edge near the ego path, a pedestrian wearing white pants and a black jacket, carrying a handbag, walks toward the ego vehicle along the curb because there is no sidewalk, and she may step slightly into the lane. Farther ahead near a side junction, a couple of pedestrians linger by the right curb without entering the roadway. A painted stop marking is visible ahead on the pavement.", "hazard_reasoning": "There is a female pedestrian wearing white pants, a black jacket and carrying a handbag, who is walking on the left side of the road, towards the ego-car, because there is no sidewalk. The driver needs to manoeuvre carefully around the pedestrian due to the absence of a sidewalk."}
{"id": "train_02629", "split": "train", "clip_key": "2020-0217-110854_013532_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "013532"}, "frames": ["2020-0217-110854_013532_movie_t-3.jpg", "2020-0217-110854_013532_movie_t-2.jpg", "2020-0217-110854_013532_movie_t-1.jpg", "2020-0217-110854_013532_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes and smooth pavement runs between high-rise buildings, with a fenced sidewalk on the left and no center median visible; traffic is queued at the intersection. A gray van directly ahead in the ego lane is stopped for the red light, holding the ego car. In the adjacent right lane, a small white van slightly ahead waits as well, aligned alongside the ego vehicle. Farther ahead in that right lane, another white van is stationary near the stop line. The signal ahead shows red, and roadside signs on the left indicate no stopping or parking.", "hazard_reasoning": "There is a gray van stopped in the ego lane because of a red traffic light, in front of the ego car. The driver should stop to avoid colliding with the halted vehicle at the red light."}
{"id": "train_02630", "split": "train", "clip_key": "2020-0217-110854_020758_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "020758"}, "frames": ["2020-0217-110854_020758_movie_t-3.jpg", "2020-0217-110854_020758_movie_t-2.jpg", "2020-0217-110854_020758_movie_t-1.jpg", "2020-0217-110854_020758_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between tall buildings, divided from oncoming traffic by a raised median fence; pavement is smooth and overall flow is slow and dense near a signalized intersection ahead. A black motorcycle directly ahead in the ego lane slows because of congestion and thus sets the ego vehicle's pace. A white mini-van immediately in front of it in the same lane also decelerates toward the crosswalk, reinforcing the slowdown. A dark van in the right lane creeps forward alongside, limiting opportunities to change lanes.", "hazard_reasoning": "There is a black motorcycle slowing in the ego-car lane, because of traffic congestion ahead. The motorcycle's reduced speed increases the risk of rear-end collision, so the driver should slow down to maintain a safe following distance."}
{"id": "train_02631", "split": "train", "clip_key": "titan_clip_1204_000282_movie", "source": {"subset": "titan", "scenario": "clip_1204", "frame": "000282"}, "frames": ["titan_clip_1204_000282_movie_t-3.jpg", "titan_clip_1204_000282_movie_t-2.jpg", "titan_clip_1204_000282_movie_t-1.jpg", "titan_clip_1204_000282_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane and no median curves ahead, the pavement smooth; roadworks on the right squeeze the lane with cones and a parked work van, and overall traffic is light. Ahead in the ego lane, a cyclist wearing a backpack and white shirt rides in the middle of the road away from the camera because the construction encroaches from the right, so the cyclist governs the ego vehicle's pace. To the left at the crosswalk, a pedestrian waits on the curb without stepping off. On the right shoulder, a worker stands beside the cones near the van. A pedestrian signal on the left shows red.", "hazard_reasoning": "There is a cyclist wearing a backpack and a white shirt, cycling in the middle of the road, away from the ego car, because of construction work on the right. The cyclist's path overlaps the ego-lane due to the blocked right side, so the driver must slow down to maintain a safe distance and avoid a collision."}
{"id": "train_02632", "split": "train", "clip_key": "2020-0207-151349_077833_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "077833"}, "frames": ["2020-0207-151349_077833_movie_t-3.jpg", "2020-0207-151349_077833_movie_t-2.jpg", "2020-0207-151349_077833_movie_t-1.jpg", "2020-0207-151349_077833_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated roadway with a guardrail on the right and a merge taper; the pavement looks smooth and traffic is moderate and slow-moving. Ahead in the ego lane, a gray truck slows, as noted, and it sets the pace for the ego vehicle. In the lane to the left slightly ahead, a white van creeps forward in parallel and could obstruct any attempt to pass or merge. Alongside on the near left, a dark sedan moves close to the ego car, further restricting lateral maneuvering. A cluster of pedestrians stands on the left sidewalk near an intersection, while the right edge remains constrained by the guardrail and taper.", "hazard_reasoning": "There's a gray truck slowing in front of the ego car, in the ego lane. The truck's reduced speed ahead may require the driver to reduce speed to maintain a safe following distance under this situation."}
{"id": "train_02633", "split": "train", "clip_key": "titan_clip_1007_000372_movie", "source": {"subset": "titan", "scenario": "clip_1007", "frame": "000372"}, "frames": ["titan_clip_1007_000372_movie_t-3.jpg", "titan_clip_1007_000372_movie_t-2.jpg", "titan_clip_1007_000372_movie_t-1.jpg", "titan_clip_1007_000372_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban commercial street with a single narrow shared lane and brick pavers extends ahead, with no divider and virtually no motor traffic. On the left ahead, a pedestrian in a white shirt walks away from the ego car along the lane edge and may drift into the ego path. Farther ahead near the lane center, another white-shirted pedestrian also walks away within the travel way, effectively constraining the ego vehicle's pace. On the right edge, a backpacked pedestrian walks away beside orange cones and stays clear of the lane. Cones, bollards, and a storefront display create minor roadside clutter on the right but leave the roadway unobstructed.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the left side of the road, away from the ego car. The pedestrian may change direction or step into the vehicle path, so the driver should slow down to maintain a safe distance."}
{"id": "train_02634", "split": "train", "clip_key": "titan_clip_132_000030_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_132_000030_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_132_000030_movie_t-3_augB1.jpg", "titan_clip_132_000030_movie_t-2_augB1.jpg", "titan_clip_132_000030_movie_t-1_augB1.jpg", "titan_clip_132_000030_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with a narrow two-way carriageway and brick paving shows light traffic; there is no median and the surface looks smooth. Ahead in the center of the lane, a pedestrian in white pants stands holding a handbag directly in front of the ego vehicle, momentarily blocking the path. On the left near the shopfronts, another pedestrian with an umbrella walks forward along the curb, remaining near the edge but close to the travel lane. Far ahead, a black van approaches in the opposite direction near the right side and slows beside a few cones, reducing the available passing space. A parking sign on the right indicates a garage entrance.", "hazard_reasoning": "There is a pedestrian wearing white pants, carrying a handbag, and standing, in the middle of the road, in front of the ego-car. The driver should be prepared to adjust the vehicle's path to avoid a potential collision with this pedestrian."}
{"id": "train_02635", "split": "train", "clip_key": "titan_clip_1224_000072_movie", "source": {"subset": "titan", "scenario": "clip_1224", "frame": "000072"}, "frames": ["titan_clip_1224_000072_movie_t-3.jpg", "titan_clip_1224_000072_movie_t-2.jpg", "titan_clip_1224_000072_movie_t-1.jpg", "titan_clip_1224_000072_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with a single one-way lane and no median has smooth pavement and very light traffic, and conditions remain steady through the block. A white box truck far ahead in the ego lane slows near the left curb, narrowing the usable lane and potentially constraining pace. Pedestrians on the left sidewalk outside shops walk and wait near the curb but remain off the roadway. More pedestrians stand farther ahead by storefronts on the left, moving intermittently without entering the lane. A zebra crossing and a side street sit on the right with no signal in view, and blue carts and other fixtures line the right curb near the corner.", "hazard_reasoning": "The scene poses no immediate hazards, so no driver action is necessary."}
{"id": "train_02636", "split": "train", "clip_key": "2020-0228-102841_026958_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "026958"}, "frames": ["2020-0228-102841_026958_movie_t-3.jpg", "2020-0228-102841_026958_movie_t-2.jpg", "2020-0228-102841_026958_movie_t-1.jpg", "2020-0228-102841_026958_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging van", "environment_perception": "An urban arterial with two lanes in each direction is divided by double solid lines, the pavement is dry and smooth, and traffic is moderate with steady movement. Ahead to the left, a black van in the left lane begins changing right into the ego lane, moving across our path. Just ahead along the left edge, a small flatbed truck travels slowly in the curb lane, and vehicles in that lane queue behind it. Oncoming traffic, including a gray sports car in the near right lane, approaches on the opposite side of the median and passes without interacting. An overhead gantry displays a 50 speed limit.", "hazard_reasoning": "There is a black van in the left lane, changing to the ego lane. The van's merging movement into your path could reduce clearance and requires caution to avoid a collision."}
{"id": "train_02637", "split": "train", "clip_key": "2020-0129-105040_061660_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061660"}, "frames": ["2020-0129-105040_061660_movie_t-3.jpg", "2020-0129-105040_061660_movie_t-2.jpg", "2020-0129-105040_061660_movie_t-1.jpg", "2020-0129-105040_061660_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "A narrow urban residential two-way road with red edge lanes and no median runs straight ahead; the asphalt looks worn but serviceable and traffic is very light. On the left edge close to the ego lane, a pedestrian wearing a brown coat and brown pants, carrying a backpack and a handbag, walks away from the camera along the curb, remaining near the travel path. Farther ahead on the left, a white van is stopped at the curb, slightly protruding into the lane and narrowing the passage. A 20 km/h speed limit sign and a no parking sign stand on the left. Bicycles are parked by storefronts and utility poles line the roadside.", "hazard_reasoning": "There is a pedestrian wearing a brown coat, brown pants, carrying a backpack and a handbag, and walking away from the ego car on the left side of the road. The driver should carefully manoeuvre around the pedestrian to maintain safe distance and prevent a potential collision if they step onto the road."}
{"id": "train_02638", "split": "train", "clip_key": "2020-0131-135401_040306_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "040306"}, "frames": ["2020-0131-135401_040306_movie_t-3.jpg", "2020-0131-135401_040306_movie_t-2.jpg", "2020-0131-135401_040306_movie_t-1.jpg", "2020-0131-135401_040306_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane in each direction runs between low-rise shops, with no physical median and smooth pavement; traffic is moderate and moving slowly. A white hatchback directly ahead in the left ego lane slows because a small truck farther ahead is also slowing, which sets the pace for the ego car. An oncoming white van approaches in the opposite lane and continues straight without drifting toward the center. Several pedestrians walk along the sidewalks on both sides near storefronts, staying on the curb. A few parked vehicles and bicycles line the curbs, but none encroach into the travel lanes.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The white hatchback's reduced speed suggests the need to slow down to maintain a safe following distance and avoid collision."}
{"id": "train_02639", "split": "train", "clip_key": "titan_clip_408_000582_movie", "source": {"subset": "titan", "scenario": "clip_408", "frame": "000582"}, "frames": ["titan_clip_408_000582_movie_t-3.jpg", "titan_clip_408_000582_movie_t-2.jpg", "titan_clip_408_000582_movie_t-1.jpg", "titan_clip_408_000582_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the truck carefully", "environment_perception": "A narrow urban commercial street with stone paving and no median runs between shopfronts, and traffic is light but the lane ahead is constricted. A gray and white truck is stopped ahead on the right in the ego lane because it is being unloaded, its rear curtain open, and the ego vehicle slows as a worker stands at the back in the roadway, narrowing the usable path. Several pedestrians walk along the left sidewalk by the shops and a few pause near the curb farther ahead, remaining adjacent to the lane but not crossing. Bollards line the left edge, further limiting passing space around the truck.", "hazard_reasoning": "There is a gray and white truck parked on the right side of the road, in the ego lane, because it is being unloaded. The parked truck obstructs the lane and reduces visibility, so the driver should manoeuvre around it carefully to avoid a collision."}
{"id": "train_02640", "split": "train", "clip_key": "titan_clip_415_000282_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_415_000282_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_415_000282_movie_t-3_augB1.jpg", "titan_clip_415_000282_movie_t-2_augB1.jpg", "titan_clip_415_000282_movie_t-1_augB1.jpg", "titan_clip_415_000282_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "A narrow urban back street with a single shared lane and no centerline runs between shopfronts; the stone-paved surface looks smooth and traffic is very light with no vehicles. Ahead, a pedestrian in a white T-shirt walks in the middle of the road toward the ego-vehicle, directly in its path and constraining its approach. A couple of other pedestrians stay by the storefronts at the sides and do not enter the roadway. No traffic signals or posted speeds are visible, and planters and steps line the right edge but remain outside the travel way.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and walking in the middle of the road, towards the ego car. They are directly in the vehicle's path and may continue forward, so you should be aware to avoid a potential collision."}
{"id": "train_02641", "split": "train", "clip_key": "titan_clip_565_000162_movie", "source": {"subset": "titan", "scenario": "clip_565", "frame": "000162"}, "frames": ["titan_clip_565_000162_movie_t-3.jpg", "titan_clip_565_000162_movie_t-2.jpg", "titan_clip_565_000162_movie_t-1.jpg", "titan_clip_565_000162_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision with pedestrian.", "environment_perception": "An urban shopping alley with a single narrow shared lane and no divider runs between storefronts; the block-paved surface is even, and vehicular traffic is absent while foot traffic is moderate. A pedestrian in the middle of the lane ahead walks toward the camera, wearing green pants and carrying a handbag, directly occupying the ego vehicle's path. On the right edge near and slightly ahead, two other pedestrians approach toward the ego position, drifting into the lane and constraining the available space. Farther ahead near the left curb, another person walks away along the edge without affecting the path.", "hazard_reasoning": "A pedestrian wearing a a handbag and green pants is walking in the middle of the lane toward the ego car. The pedestrian's position directly in the vehicle's path creates a collision risk, so the driver should slow down to maintain safety."}
{"id": "train_02642", "split": "train", "clip_key": "2020-0213-143552_025045_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "025045"}, "frames": ["2020-0213-143552_025045_movie_t-3.jpg", "2020-0213-143552_025045_movie_t-2.jpg", "2020-0213-143552_025045_movie_t-1.jpg", "2020-0213-143552_025045_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop behind the motorcycle.", "environment_perception": "In a dense urban area, the ego car is stopped at a wide multi-lane signalized intersection with smooth pavement and no median, while overall traffic is moderate with steady cross flow. A black motorcycle is stopped directly ahead in the ego lane because the light is red, and it limits the ego's movement. Multiple cars on the cross street travel left-to-right and right-to-left through the junction, some turning, as they hold the green phase. A white minivan stands just to the left in an adjacent same-direction lane, also waiting at the red. Pedestrians gather on the left-side corner behind the curb. The overhead signal for the ego approach displays red.", "hazard_reasoning": "A black motorcycle is stopped in front of the ego car in the ego lane, because the light is red. Since the motorcycle ahead is halted due to the red light, you must stop to avoid a rear-end collision."}
{"id": "train_02643", "split": "train", "clip_key": "2020-0217-110854_067470_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "067470"}, "frames": ["2020-0217-110854_067470_movie_t-3.jpg", "2020-0217-110854_067470_movie_t-2.jpg", "2020-0217-110854_067470_movie_t-1.jpg", "2020-0217-110854_067470_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the lane-changing vehicle.", "environment_perception": "An urban multi-lane arterial with two through lanes in the ego direction and a right-turn pocket forming on the right runs beneath roadside trees; the pavement is dry and smooth, and traffic is moderate and moving steadily toward a signalized intersection ahead. A covered box truck immediately ahead in the left lane cruises at a steady pace and governs the ego car's speed. To the right of the ego car, a gray sedan signals and shifts rightward into the newly marked right-hand turn lane, diverging from the through flow. Farther ahead in the center lane, a small light truck proceeds toward the intersection with a modest gap in front, not affecting the ego path. On the far side of the roadway, oncoming traffic moves steadily in its lanes beyond the center markings. Overhead traffic lights and guide signs are visible at the upcoming junction.", "hazard_reasoning": "There's a gray sedan changing lanes, from the lane on the right of the ego-car, to a right-hand turn lane. Because the sedan is merging into the turn lane adjacent to the ego vehicle, it could reduce buffer space and force sudden braking; the driver should be aware to maintain a safe margin."}
{"id": "train_02644", "split": "train", "clip_key": "2020-0131-135401_039459_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "039459"}, "frames": ["2020-0131-135401_039459_movie_t-3.jpg", "2020-0131-135401_039459_movie_t-2.jpg", "2020-0131-135401_039459_movie_t-1.jpg", "2020-0131-135401_039459_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane in each direction curves gently right, lined by guardrails and mid-rise buildings; the pavement is dry and slightly worn, and traffic is light. A white box truck travels ahead in the ego lane at a distance, maintaining speed and loosely setting the pace. An oncoming car proceeds in the right-side lane and passes without conflict. A blue overhead guide sign is visible ahead, and no traffic signals appear. No pedestrians, cyclists, or obstacles encroach on the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02645", "split": "train", "clip_key": "titan_clip_776_000564_movie", "source": {"subset": "titan", "scenario": "clip_776", "frame": "000564"}, "frames": ["titan_clip_776_000564_movie_t-3.jpg", "titan_clip_776_000564_movie_t-2.jpg", "titan_clip_776_000564_movie_t-1.jpg", "titan_clip_776_000564_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with a single marked lane and no median runs between close buildings; pavement looks smooth and traffic is light, with scaffolding and parked bicycles along the right. Ahead on the left, a pedestrian carrying a handbag walks away from the ego car along the lane edge, potentially remaining within the vehicle's path. On the right, another pedestrian steps from the sidewalk and moves diagonally toward the center of the roadway, creating a possible need to slow. Farther ahead, a small truck sits stationary in the lane, restricting the available space forward.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking on the left side of the road, away from the ego car. Because the pedestrian might unexpectedly change direction and the parked truck and cones limit visibility, you need to slow down to maintain safe reaction time."}
{"id": "train_02646", "split": "train", "clip_key": "2020-0225-145150_000738_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "000738"}, "frames": ["2020-0225-145150_000738_movie_t-3.jpg", "2020-0225-145150_000738_movie_t-2.jpg", "2020-0225-145150_000738_movie_t-1.jpg", "2020-0225-145150_000738_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid yellow centerline curves gently right; the pavement is dry and traffic is moderate but slows ahead. In the ego lane ahead, a red motorcycle comes to a stop and waits because traffic is congested, blocking the ego vehicle's path. On the left edge ahead, a cyclist rides slowly straight within the ego lane, occupying space the ego car might otherwise use to pass. In the opposite lane, a large cement mixer truck approaches from ahead and continues past in its lane, reducing lateral clearance through the bend.", "hazard_reasoning": "There is a red motorcycle that has stopped in front of the ego car because of the traffic congestion ahead. The driver should slow down and keep a safe distance from the stopped vehicle to avoid a collision under these conditions."}
{"id": "train_02647", "split": "train", "clip_key": "2020-0212-150403_009201_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "009201"}, "frames": ["2020-0212-150403_009201_movie_t-3.jpg", "2020-0212-150403_009201_movie_t-2.jpg", "2020-0212-150403_009201_movie_t-1.jpg", "2020-0212-150403_009201_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with multiple lanes runs between mid-rise buildings, separated by a low landscaped median with a white rail; the pavement is smooth and traffic in the ego direction is queued. A black SUV is stopped directly ahead in the ego lane with its brake lights on, holding the ego vehicle. To the left by the curb, a black van stands nearly alongside and slightly ahead, also stationary and narrowing escape space. In the adjacent lane ahead-left, a large box truck is stopped, adding to the blockage. Beyond the median to the right, several oncoming vehicles travel steadily with light flow.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, in front of the ego car. The stopped SUV ahead poses a risk of collision, so the driver should stop promptly."}
{"id": "train_02648", "split": "train", "clip_key": "2020-0205-152530_051768_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "051768"}, "frames": ["2020-0205-152530_051768_movie_t-3.jpg", "2020-0205-152530_051768_movie_t-2.jpg", "2020-0205-152530_051768_movie_t-1.jpg", "2020-0205-152530_051768_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with several same-direction lanes and painted yellow lane lines runs on dry, smooth pavement, and traffic flows at a moderate, steady pace toward a signalized intersection ahead. A white truck drives directly ahead in the ego lane and gradually pulls away, effectively setting the ego vehicle's pace. To the left, a silver hatchback travels slightly ahead in its lane and continues straight alongside without drifting. In the adjacent right lane, a white van proceeds forward at similar speed, remaining parallel to the ego path. Signals and overhead equipment are visible at the junction, but no aspect is clearly discernible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02649", "split": "train", "clip_key": "titan_clip_383_000198_movie", "source": {"subset": "titan", "scenario": "clip_383", "frame": "000198"}, "frames": ["titan_clip_383_000198_movie_t-3.jpg", "titan_clip_383_000198_movie_t-2.jpg", "titan_clip_383_000198_movie_t-1.jpg", "titan_clip_383_000198_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on left side", "environment_perception": "A narrow urban shopping street with interlocking pavers serves as a shared roadway with no lane markings or median; storefront displays and parked items narrow the path, and traffic is light with only pedestrians visible. Ahead on the left, a pedestrian wearing a white shirt and carrying a handbag walks away from the ego car along the travel path, likely to influence the vehicle's pace. On the near right edge, a pedestrian in light top and dark pants moves rightward beside the curb, close to the lane. Farther ahead in the center, another pedestrian walks away along the middle of the street, remaining in the ego vehicle's line. Bicycles and shop racks line the right side, reducing clearance.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, walking on the left side of the road, away from the ego car. The driver should be cautious because the pedestrian could change direction or step into the vehicle's path unexpectedly."}
{"id": "train_02650", "split": "train", "clip_key": "2020-0226-140503_017022_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "017022"}, "frames": ["2020-0226-140503_017022_movie_t-3.jpg", "2020-0226-140503_017022_movie_t-2.jpg", "2020-0226-140503_017022_movie_t-1.jpg", "2020-0226-140503_017022_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to the white SUV crossing ahead", "environment_perception": "An urban four-way intersection with zebra crosswalks and no median lies ahead; the pavement appears in good condition and traffic is light. A small covered truck moves left to right through the middle of the intersection ahead, crossing in front of the ego vehicle and constraining its progress. Beside the ego on the right, a silver car in the adjacent same-direction lane is stationary at the junction. On the right sidewalk, a person holding an umbrella stands at the corner next to a guardrail without entering the roadway. Overhead traffic signals and roadside signs are visible at the junction.", "hazard_reasoning": "There is a white SUV crossing the intersection from the left to the right lane beside the ego car, in the middle of the intersection ahead. The driver should yield because the SUV is moving across lanes and may enter the ego-vehicle's path, posing a collision risk."}
{"id": "train_02651", "split": "train", "clip_key": "titan_clip_426_000144_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_426_000144_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_426_000144_movie_t-3_augB1.jpg", "titan_clip_426_000144_movie_t-2_augB1.jpg", "titan_clip_426_000144_movie_t-1_augB1.jpg", "titan_clip_426_000144_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one narrow lane each direction and smooth asphalt carries light traffic as the scene enters a roadside construction zone. The ego vehicle proceeds straight while the left side is partially blocked by cones and a work truck. A pedestrian wearing a helmet and yellow vest stands on the left near the centerline, gesturing to guide traffic around the site and thus controlling the ego vehicle's pace. An excavator works beside the truck on the left, its raised arm moving over the work area and narrowing the usable lane. On the right sidewalk near the crosswalk, a woman with a stroller and another pedestrian wait at the curb behind a railing, close to the roadway but not entering the lane. A black van is parked in a recessed bay on the right, and no oncoming vehicles are visible.", "hazard_reasoning": "There is a pedestrian wearing a helmet and yellow vest, standing on the left side of the road, because they are guiding the traffic. The driver should carefully manoeuvre around the pedestrian to avoid conflicts and maintain safety."}
{"id": "train_02652", "split": "train", "clip_key": "titan_clip_362_000336_movie", "source": {"subset": "titan", "scenario": "clip_362", "frame": "000336"}, "frames": ["titan_clip_362_000336_movie_t-3.jpg", "titan_clip_362_000336_movie_t-2.jpg", "titan_clip_362_000336_movie_t-1.jpg", "titan_clip_362_000336_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "A narrow urban residential street with no centerline and smooth pavement shows light traffic and no oncoming vehicles. On the near left in the ego lane, a white truck is parked, narrowing the roadway and prompting the ego vehicle to edge right to pass. On the right curb close to the camera, a man in business attire walks toward the ego vehicle along the sidewalk, remaining near but outside the lane. Farther ahead on the right, several pedestrians walk away along the sidewalk and do not enter the roadway. A convex corner mirror is ahead, and a large 20 speed marking is painted on the pavement.", "hazard_reasoning": "There is a white truck parked on the left side of the street, in the ego lane. The parked truck narrows the driving lane and obstructs visibility, requiring careful manoeuvring to pass safely."}
{"id": "train_02653", "split": "train", "clip_key": "2020-0131-135401_001160_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "001160"}, "frames": ["2020-0131-135401_001160_movie_t-3.jpg", "2020-0131-135401_001160_movie_t-2.jpg", "2020-0131-135401_001160_movie_t-1.jpg", "2020-0131-135401_001160_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane each direction runs between midrise buildings; pavement is dry and smooth, and overall traffic is light with no oncoming vehicles visible. Directly ahead in the ego lane, a white box truck is stopped, blocking the lane and holding the ego car. On the left, several pedestrians on the sidewalk walk forward near the curb beside the truck's rear, remaining off the roadway but close to the travel lane. The right side shows a curbside planting strip and posts bordering the opposing lane, and no additional vehicles approach or pass.", "hazard_reasoning": "There is a white truck stopped in front of the ego car. The stationary truck poses a collision risk if the driver does not stop in time, so the driver must halt to maintain a safe distance."}
{"id": "train_02654", "split": "train", "clip_key": "titan_clip_264_000408_movie", "source": {"subset": "titan", "scenario": "clip_264", "frame": "000408"}, "frames": ["titan_clip_264_000408_movie_t-3.jpg", "titan_clip_264_000408_movie_t-2.jpg", "titan_clip_264_000408_movie_t-1.jpg", "titan_clip_264_000408_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist ahead.", "environment_perception": "A narrow urban two-way street without a centerline runs between low-rise buildings, with a green guardrail along the right; the pavement is smooth and traffic is light. Ahead on the left edge of the ego lane, an oncoming cyclist wearing a white sweater and black dress rides toward the car and may encroach on its path. On the near left, a pedestrian in a hat walks along the curb close to the roadway, reducing lateral space as the cyclist and car approach each other. A large slow marking is painted on the pavement, and no signals are visible.", "hazard_reasoning": "There is a cyclist wearing a white sweater and a black dress, riding on the left side of the road, towards the ego car. The cyclist is close to the vehicle's path and may swerve into the lane, so the driver should be aware of the cyclist to avoid a potential collision."}
{"id": "train_02655", "split": "train", "clip_key": "2020-0127-132751_081484_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "081484"}, "frames": ["2020-0127-132751_081484_movie_t-3.jpg", "2020-0127-132751_081484_movie_t-2.jpg", "2020-0127-132751_081484_movie_t-1.jpg", "2020-0127-132751_081484_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three lanes in each direction and no physical median is shown; the pavement looks smooth and traffic is moderate as the car approaches a signalized intersection. A black truck with a green tarp drives ahead in the ego lane, moving away and setting the pace. Oncoming traffic includes a white van proceeding straight through the junction in its lane without conflict. In the same direction, a dark car travels in the far-right lane near the curb, advancing toward the intersection while remaining parallel to the ego vehicle.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02656", "split": "train", "clip_key": "2020-0129-105040_047020_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "047020"}, "frames": ["2020-0129-105040_047020_movie_t-3.jpg", "2020-0129-105040_047020_movie_t-2.jpg", "2020-0129-105040_047020_movie_t-1.jpg", "2020-0129-105040_047020_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial under an elevated roadway curves gently right with three same-direction lanes, a right-side guardrail, and dry, well-maintained pavement; traffic is light to moderate and flows smoothly. A white sedan runs alongside in the lane to the left of the ego vehicle, maintaining a similar speed and remaining relevant if either car changes lanes. Farther ahead in the center and left lanes, two white vans and a box truck continue at a steady pace, influencing overall flow while leaving the ego lane mostly open. An overhead pedestrian bridge labeled Shimotakaido and the supporting columns of the structure pass above, casting shadows across the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02657", "split": "train", "clip_key": "2020-0226-101332_012088_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "012088"}, "frames": ["2020-0226-101332_012088_movie_t-3.jpg", "2020-0226-101332_012088_movie_t-2.jpg", "2020-0226-101332_012088_movie_t-1.jpg", "2020-0226-101332_012088_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with narrow sidewalks and railings runs under a skybridge; the pavement shows patches and the traffic flow is light. In the ego lane ahead at the intersection, a brown chocolate van slows and turns left in front of the ego car, briefly constraining the pace. An oncoming white truck approaches in the right-side lane and continues straight through the same junction without interacting with the ego lane. A pedestrian stands at the left curb by the zebra crossing, while a few others walk along the right sidewalk near the buildings.", "hazard_reasoning": "There is a brown chocolate van, turning left in the ego lane, at the intersection, in front of the ego car. The van's unexpected left turn in your lane could cause a collision, so you should slow down to maintain a safe distance and react accordingly.\\n"}
{"id": "train_02658", "split": "train", "clip_key": "2020-0131-135401_027711_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "027711"}, "frames": ["2020-0131-135401_027711_movie_t-3.jpg", "2020-0131-135401_027711_movie_t-2.jpg", "2020-0131-135401_027711_movie_t-1.jpg", "2020-0131-135401_027711_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with no median and smooth pavement marked 40 carries moderate traffic that bunches into a queue ahead. A white hatchback directly ahead in the ego lane slows because congestion builds further up, constraining the ego car's pace. A gray sedan to the right runs parallel in the adjacent lane and continues straight, limiting an immediate merge. A large white box truck is stopped at the left curb beside other parked cars near the camera, narrowing the usable lane. Farther ahead several buses and trucks proceed in the same direction within the queue, and construction hoarding lines the right side behind the curb.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to match the reduced speed and maintain a safe following distance behind the white hatchback to prevent a collision."}
{"id": "train_02659", "split": "train", "clip_key": "2020-0228-102841_000053_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "000053"}, "frames": ["2020-0228-102841_000053_movie_t-3.jpg", "2020-0228-102841_000053_movie_t-2.jpg", "2020-0228-102841_000053_movie_t-1.jpg", "2020-0228-102841_000053_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential scene shows the vehicle moving slowly through a narrow concrete underpass or driveway with no marked lanes or divider, emerging into daylight onto a small side street; the pavement is smooth and traffic is absent. No vehicles or pedestrians are visible ahead or to either side, so nothing appears to constrain the ego vehicle's path. A small circular regulatory sign stands near the exit on the left, and the underpass walls and adjacent building create a restricted, partly blind view of any cross traffic.", "hazard_reasoning": "No caption provided. The scene presents no immediate hazards as the road is clear and well-maintained."}
{"id": "train_02660", "split": "train", "clip_key": "2020-0214-145407_031503_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "031503"}, "frames": ["2020-0214-145407_031503_movie_t-3.jpg", "2020-0214-145407_031503_movie_t-2.jpg", "2020-0214-145407_031503_movie_t-1.jpg", "2020-0214-145407_031503_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs beneath an elevated roadway, with a painted gore separating a right-side branch, smooth pavement, and heavy slow-moving traffic. Directly ahead in the ego lane, a black sedan slows and creeps because congestion forms further ahead, constraining the ego vehicle's pace. Slightly ahead to the left, a boxy black minivan in the adjacent lane moves slowly alongside and stays close to the ego lane near the taper, potentially edging over if a gap appears. To the right, a white SUV in the lane beside the gore advances cautiously and looks set to merge left after the separation ends, which may enter the ego lane. Directional signs hang overhead; no unusual obstacles are visible.", "hazard_reasoning": "There is a black sedan slowing in the ego lane because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and reduce the risk of rear-ending the vehicle ahead."}
{"id": "train_02661", "split": "train", "clip_key": "2020-0218-103119_017409_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "017409"}, "frames": ["2020-0218-103119_017409_movie_t-3.jpg", "2020-0218-103119_017409_movie_t-2.jpg", "2020-0218-103119_017409_movie_t-1.jpg", "2020-0218-103119_017409_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain a safe following distance.", "environment_perception": "An urban multi-lane arterial with no physical median runs between tall buildings, the pavement looks good, and traffic is moderate but bunches near an upcoming intersection. A white van ahead in the ego lane slows because a short queue forms ahead, and it sets the pace for the ego vehicle. In the adjacent left lane, a large box truck also rolls slowly near the crosswalk, potentially limiting lateral movement. Farther ahead, several cars in the right lanes proceed more steadily while oncoming traffic flows on the far side of the center lines, and an overhead blue lane-use sign indicates through lanes with a merge ahead.", "hazard_reasoning": "There is a white van slowing down in the ego lane, because of traffic congestion ahead. The van's reduced speed indicates congestion ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_02662", "split": "train", "clip_key": "2020-0214-145407_040811_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0214-145407_040811_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0214-145407_040811_movie_t-3_augB1.jpg", "2020-0214-145407_040811_movie_t-2_augB1.jpg", "2020-0214-145407_040811_movie_t-1_augB1.jpg", "2020-0214-145407_040811_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane arterial runs beneath an elevated expressway, the pavement worn but dry, and traffic moves slowly in a compact flow. A white van directly ahead in the ego lane slows because traffic congestion builds in front, setting the ego vehicle's pace. A silver sedan in the adjacent right lane proceeds slowly a little ahead, keeping pace with the queue and contributing to the slowdown. Farther ahead, multiple vehicles in both lanes continue under the viaduct at reduced speed, forming a steady line. A bollard- and rail-protected side area lines the right edge, and an overhead directional sign with lane arrows is visible ahead.", "hazard_reasoning": "There is a white van slowing down in the ego lane, because of traffic congestion ahead. Driver should slow down in response to the van's deceleration to maintain a safe following distance and reduce collision risk."}
{"id": "train_02663", "split": "train", "clip_key": "2020-0129-105040_043937_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "043937"}, "frames": ["2020-0129-105040_043937_movie_t-3.jpg", "2020-0129-105040_043937_movie_t-2.jpg", "2020-0129-105040_043937_movie_t-1.jpg", "2020-0129-105040_043937_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with a right-side guardrail and dry, smooth pavement; traffic is heavy and largely stopped. Ahead in the ego lane, a silver SUV is stationary for a red signal, holding the ego vehicle. In the adjacent same-direction lane to the left, a large blue truck creeps forward in the queue, reducing space beside the ego car. Farther ahead in the left lane, a white van also waits with brake lights on, moving slightly as gaps appear. A traffic light visible above the road shows red, keeping the line halted, and no other obstacles are present in the ego lane.", "hazard_reasoning": "There is a silver SUV stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop at the red light to prevent a rear-end collision with the halted vehicle."}
{"id": "train_02664", "split": "train", "clip_key": "2020-0220-151845_063617_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "063617"}, "frames": ["2020-0220-151845_063617_movie_t-3.jpg", "2020-0220-151845_063617_movie_t-2.jpg", "2020-0220-151845_063617_movie_t-1.jpg", "2020-0220-151845_063617_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down for red light ahead", "environment_perception": "An urban arterial runs under an elevated expressway, with two same-direction lanes bordered by guardrails and a barrier separating a parallel opposite-direction roadway; the pavement looks smooth and traffic is moderate. Ahead in the ego lane, a red truck with a yellow tarp slows as the approach to a red traffic light up the road constrains the ego vehicle's pace. In the adjacent right lane slightly farther ahead, a dark car continues straight at similar speed and stays in its lane. On the far left beyond the chevrons and rail, oncoming cars travel along the separated parallel road without interacting. A red signal governs the upcoming intersection.", "hazard_reasoning": "There is a red truck with a yellow tarp slowing down in the ego lane because of a red traffic light up ahead. The driver should slow down to maintain a safe following distance as the truck decelerates for the red light, reducing the risk of a rear-end collision."}
{"id": "train_02665", "split": "train", "clip_key": "2020-0129-144857_047978_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "047978"}, "frames": ["2020-0129-144857_047978_movie_t-3.jpg", "2020-0129-144857_047978_movie_t-2.jpg", "2020-0129-144857_047978_movie_t-1.jpg", "2020-0129-144857_047978_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under elevated structures with a guardrail median; the pavement is dry and traffic is heavy in a queue at a signal. A silver box truck directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. To the left in the adjacent same-direction lane, a dark minivan and a small flatbed truck wait in line, limiting space to merge around the truck. Beyond the median on the right, oncoming cars and a white van pass steadily without interacting with the ego lane. A traffic signal ahead shows red, and the queue creeps only slightly.", "hazard_reasoning": "There is a silver truck stopped in the ego lane. You should stop promptly to avoid rear-ending the stationary truck ahead."}
{"id": "train_02666", "split": "train", "clip_key": "2020-0207-101955_078391_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "078391"}, "frames": ["2020-0207-101955_078391_movie_t-3.jpg", "2020-0207-101955_078391_movie_t-2.jpg", "2020-0207-101955_078391_movie_t-1.jpg", "2020-0207-101955_078391_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated divided road curves gently right with one through lane and a tapering merge lane on the right, bounded by guardrails and a noise barrier; the pavement is smooth and traffic is light with no oncoming traffic visible. Directly ahead in the ego lane, a blue utility truck accelerates and pulls away, setting the ego vehicle's pace. The right-side merge area is empty as its hashed gore ends, and no other moving vehicles are nearby.", "hazard_reasoning": "There is a blue truck accelerating in front of the ego car, in the ego lane. The truck's sudden acceleration creates a speed differential that may require the driver to adjust speed and maintain a safe following distance, so the driver should follow the vehicle ahead to stay safe."}
{"id": "train_02667", "split": "train", "clip_key": "titan_clip_172_000366_movie", "source": {"subset": "titan", "scenario": "clip_172", "frame": "000366"}, "frames": ["titan_clip_172_000366_movie_t-3.jpg", "titan_clip_172_000366_movie_t-2.jpg", "titan_clip_172_000366_movie_t-1.jpg", "titan_clip_172_000366_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban street with a single shared lane runs between close storefronts; there is no median and the pavement is smooth, with light activity and no moving vehicles. Two pedestrians wearing white shirts and black pants walk toward the ego car along the left side of the lane, partly in the travel path and constraining its pace. On the right, a man crouches over equipment beside a parked bicycle and shop displays at the curb, remaining stationary but narrowing the passage. A red stop sign and a blue straight-ahead one-way sign are visible on the right ahead. The sides are cluttered with bicycles, signage, and a mesh-covered wall, forming a tight corridor.", "hazard_reasoning": "Two pedestrians wearing a white shirt and black pants are walking along the left side of the lane, toward the ego car. You should stop because they are approaching your path and may cross in front of you."}
{"id": "train_02668", "split": "train", "clip_key": "2020-0226-101332_077557_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "077557"}, "frames": ["2020-0226-101332_077557_movie_t-3.jpg", "2020-0226-101332_077557_movie_t-2.jpg", "2020-0226-101332_077557_movie_t-1.jpg", "2020-0226-101332_077557_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of lane changes", "environment_perception": "An urban multi-lane arterial with smooth pavement carries moderate traffic; three lanes run in the ego direction, and a guardrail median on the right separates oncoming traffic moving the other way. Ahead in the ego lane, a black sedan changes to the left lane, creating a gap in front. Farther ahead in the same lane, a small boxy van continues straight with the queue and effectively sets the pace. To the immediate right, a dark sedan runs alongside in the adjacent lane and gradually passes without merging. Along the left curb, a maroon car is stopped near the hedge, narrowing the available shoulder.", "hazard_reasoning": "There is a black sedan in front of the ego car, changing to the left lane. This lane change may bring it into the ego-vehicle's path unexpectedly, so the driver should be cautious and monitor its movement to maintain a safe distance."}
{"id": "train_02669", "split": "train", "clip_key": "titan_clip_263_000324_movie", "source": {"subset": "titan", "scenario": "clip_263", "frame": "000324"}, "frames": ["titan_clip_263_000324_movie_t-3.jpg", "titan_clip_263_000324_movie_t-2.jpg", "titan_clip_263_000324_movie_t-1.jpg", "titan_clip_263_000324_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban side street with brick-paved surface meets a narrow two-way road at a T-junction, the pavement is in good condition and traffic on the cross street appears light. Ahead, a woman in a light top and long skirt walks from the right across the ego vehicle's path toward the left, slowing the approach. On the right curb, a man in a white shirt and black pants crosses from the right side to the left side of the road, and he may enter the ego lane. On the cross street beyond them, a white van proceeds left to right past the junction, briefly controlling the available gap. A convex mirror and a no-entry sign stand at the corner, with several parked vehicles near a parking lot entrance.", "hazard_reasoning": "There is a man in a white shirt and black pants. crossing the street on the right side of the road to the left side. The pedestrian is crossing directly into your path, so you should slow down to avoid a collision."}
{"id": "train_02670", "split": "train", "clip_key": "2020-0204-150838_079109_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "079109"}, "frames": ["2020-0204-150838_079109_movie_t-3.jpg", "2020-0204-150838_079109_movie_t-2.jpg", "2020-0204-150838_079109_movie_t-1.jpg", "2020-0204-150838_079109_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "A suburban expressway segment runs under an elevated viaduct with two same-direction lanes, a solid right shoulder, and smooth pavement; traffic flows at a moderate, steady pace. A white box truck travels ahead in the ego lane and effectively sets the pace. In the left lane slightly ahead, a large tanker truck proceeds parallel at similar speed, limiting any move to the left. Farther ahead near the center of the scene, a small car is visible beyond the box truck but does not affect the ego vehicle. Construction fencing and barriers line the right shoulder, tightening the margin but leaving the lane clear.", "hazard_reasoning": "There is a black motorcycle cutting into the ego lane, from the left lane. The driver should yield to the merging motorcycle to prevent a collision under this scenario."}
{"id": "train_02671", "split": "train", "clip_key": "2020-0225-145150_037036_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "037036"}, "frames": ["2020-0225-145150_037036_movie_t-3.jpg", "2020-0225-145150_037036_movie_t-2.jpg", "2020-0225-145150_037036_movie_t-1.jpg", "2020-0225-145150_037036_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial between mid-rise buildings carries two same-direction lanes bordered by a right-side fence and painted chevron islands; the pavement is dry and intact. Traffic is heavy and mostly stopped. Immediately ahead in the ego lane, a blue truck is stopped because of congestion, holding the ego car. In the adjacent left lane a white van a short distance ahead creeps forward with the queue, constraining overall pace. At the left edge within a hatched shoulder, a white sedan remains stationary beside the line of vehicles.", "hazard_reasoning": "There is a blue truck stopped in front of the ego car, because of traffic congestion ahead. Stop to avoid a collision with the halted vehicle as traffic ahead is congested."}
{"id": "train_02672", "split": "train", "clip_key": "titan_clip_549_000270_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_549_000270_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_549_000270_movie_t-3_augB1.jpg", "titan_clip_549_000270_movie_t-2_augB1.jpg", "titan_clip_549_000270_movie_t-1_augB1.jpg", "titan_clip_549_000270_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban backstreet with a single narrow lane and no median runs between shops; the asphalt is slightly worn and traffic is light, mostly pedestrians, with no vehicles moving nearby. Two pedestrians walk together in the middle of the lane ahead, moving away from the ego vehicle and effectively setting its pace. On the right edge near storefronts, a man stands at the curb by large bins, stationary and close to the roadway but not stepping out. Farther ahead on the right sidewalk, another pedestrian walks in the same direction, remaining on the curb and not affecting the lane. An open loading bay on the left with cones and curbside furniture on the right further constrict the lane.", "hazard_reasoning": "Two pedestrians walking together in the middle of the road and away from the ego car. The driver should slow down because pedestrians are crossing ahead in the lane, posing a collision risk."}
{"id": "train_02673", "split": "train", "clip_key": "2020-0210-155354_000569_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "000569"}, "frames": ["2020-0210-155354_000569_movie_t-3.jpg", "2020-0210-155354_000569_movie_t-2.jpg", "2020-0210-155354_000569_movie_t-1.jpg", "2020-0210-155354_000569_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban commercial street with two same-direction lanes and no median has smooth pavement and slow, queued traffic at an intersection. A white SUV directly ahead in the ego lane is stopped at the intersection for a red light, holding the ego car. In the adjacent right lane, several vehicles including a black taxi idle or inch forward beside the queue, matching the stop. Pedestrians step from the right sidewalk and cross the crosswalk ahead, moving left across both lanes and occupying the space in front of the stopped vehicles. An overhead traffic signal shows red above the approach.", "hazard_reasoning": "A white SUV is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to prevent colliding with the halted SUV at the red light."}
{"id": "train_02674", "split": "train", "clip_key": "titan_clip_1073_000306_movie", "source": {"subset": "titan", "scenario": "clip_1073", "frame": "000306"}, "frames": ["titan_clip_1073_000306_movie_t-3.jpg", "titan_clip_1073_000306_movie_t-2.jpg", "titan_clip_1073_000306_movie_t-1.jpg", "titan_clip_1073_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of distracted pedestrian", "environment_perception": "An urban neighborhood street has one narrow lane in each direction with no median, smooth pavement, and a gentle right curve; traffic is light. The ego vehicle travels in the left lane of this two-way road. On the left edge just ahead, a pedestrian in a black T-shirt stands looking at a phone, pausing because another person is occupying the left shoulder, positioning them near the ego lane. Farther ahead on the right, a cyclist rides slowly toward the ego vehicle along the curb in the oncoming lane at the curve, reducing space. A white van waits at the right curb ahead in the oncoming lane, further narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, looking into a cell phone, and standing on the left side of the road because of another pedestrian standing on the left shoulder. The driver should be cautious because the distracted pedestrian may step into traffic unexpectedly."}
{"id": "train_02675", "split": "train", "clip_key": "2020-0214-145407_022272_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "022272"}, "frames": ["2020-0214-145407_022272_movie_t-3.jpg", "2020-0214-145407_022272_movie_t-2.jpg", "2020-0214-145407_022272_movie_t-1.jpg", "2020-0214-145407_022272_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane roadway with a planted verge and guardrail on the left runs straight on dry, smooth pavement, and traffic stays light throughout. A brown semi-truck directly ahead in the ego lane slows, so the ego car follows at a reduced pace. A black mini MPV in the adjacent right lane ahead continues forward steadily and remains outside the ego path. No oncoming traffic, pedestrians, or cyclists are visible, and the roadway ahead looks unobstructed. Overhead gantry structures and a small roadside circular sign are present, but no specific signal aspect or posted speed is clearly readable.", "hazard_reasoning": "There is a brown semi-truck slowing in front of the ego car. The reduced speed of the truck could require the driver to brake suddenly, so the driver should slow down to maintain a safe following distance."}
{"id": "train_02676", "split": "train", "clip_key": "titan_clip_308_000624_movie", "source": {"subset": "titan", "scenario": "clip_308", "frame": "000624"}, "frames": ["titan_clip_308_000624_movie_t-3.jpg", "titan_clip_308_000624_movie_t-2.jpg", "titan_clip_308_000624_movie_t-1.jpg", "titan_clip_308_000624_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban low-speed street with interlocking brick pavement runs between buildings, effectively a single narrow lane with no median, and traffic is light as the vehicle approaches a T-intersection. A woman in a black dress carrying an umbrella walks ahead along the right edge away from the camera, close to the travel path and potentially entering the lane. A small covered truck is stopped on the left partly in the lane with its rear open, narrowing the roadway. A man in a white shirt walks ahead near the truck toward the intersection in the center-left, influencing the vehicle's pace. A Japanese triangular stop sign is visible at the far junction. Several parked scooters and storefront planters line the sides but stay clear of the lane.", "hazard_reasoning": "There is a woman wearing a black dress, carrying an umbrella, and walking on the right side of the road, away from the ego car. The driver should slow down because the pedestrian near the obstruction may step into the lane unexpectedly, requiring extra reaction time."}
{"id": "train_02677", "split": "train", "clip_key": "2020-0225-145150_023482_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "023482"}, "frames": ["2020-0225-145150_023482_movie_t-3.jpg", "2020-0225-145150_023482_movie_t-2.jpg", "2020-0225-145150_023482_movie_t-1.jpg", "2020-0225-145150_023482_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban underpass with high concrete walls contains a two-way road; the ego car proceeds in the left-side lane, separated from oncoming lanes by a solid orange centerline and dashed markings. The pavement is dry and smooth, and overall traffic is light with no oncoming vehicles visible. A gray van directly ahead in the ego lane slows and continues straight, constraining the ego vehicle's pace.", "hazard_reasoning": "There is a gray van slowing down in front of the ego car in the ego lane. The van's deceleration could require you to reduce speed to maintain a safe following distance, so you should slow down."}
{"id": "train_02678", "split": "train", "clip_key": "2020-0217-110854_026188_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "026188"}, "frames": ["2020-0217-110854_026188_movie_t-3.jpg", "2020-0217-110854_026188_movie_t-2.jpg", "2020-0217-110854_026188_movie_t-1.jpg", "2020-0217-110854_026188_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "At night the scene runs through a covered urban expressway or tunnel with two same-direction lanes, smooth dry pavement, and light traffic. The ego vehicle proceeds in the rightmost lane beside a wall. Ahead, a white bus in the ego lane slows with brake lights illuminated, constraining the ego car's pace. The adjacent left lane appears clear, and no oncoming traffic is visible in this one-way segment. No notable signals or signs appear, and there are no obstacles.", "hazard_reasoning": "A white bus is slowing in front of the ego car in the ego lane. Because the bus is decelerating, you should slow down to maintain a safe distance and avoid collision."}
{"id": "train_02679", "split": "train", "clip_key": "titan_clip_1195_000336_movie", "source": {"subset": "titan", "scenario": "clip_1195", "frame": "000336"}, "frames": ["titan_clip_1195_000336_movie_t-3.jpg", "titan_clip_1195_000336_movie_t-2.jpg", "titan_clip_1195_000336_movie_t-1.jpg", "titan_clip_1195_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian ahead", "environment_perception": "A narrow urban shopping street with a single shared lane and no divider stretches ahead; the stone-paved surface looks intact, and vehicle traffic is light with no oncoming cars visible. In the middle of the road, a woman wearing a white T-shirt and a pink skirt walks toward the ego vehicle, occupying the travel lane. On the right edge beside storefronts, a worker pushes a green handcart slowly, the cart protruding into the lane and narrowing the available space. Farther ahead, several pedestrians move along the center of the street while others stand near shop entrances on both sides, close to the curb line. A convex safety mirror is mounted on the left corner.", "hazard_reasoning": "There is a woman wearing a white t-shirt and a pink skirt, and walking towards the ego car, in the middle of the road. The driver should yield to her because she is walking directly into the vehicle's path and may not be able to clear the way in time."}
{"id": "train_02680", "split": "train", "clip_key": "titan_clip_1388_000474_movie", "source": {"subset": "titan", "scenario": "clip_1388", "frame": "000474"}, "frames": ["titan_clip_1388_000474_movie_t-3.jpg", "titan_clip_1388_000474_movie_t-2.jpg", "titan_clip_1388_000474_movie_t-1.jpg", "titan_clip_1388_000474_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cones", "environment_perception": "An urban two-way local street with no median and worn pavement narrows between construction fences as it approaches a T-junction under an elevated structure; traffic is light with no oncoming vehicles visible. Red and blue traffic cones stand along the left edge in the ego lane due to construction on the left, slightly encroaching on the drivable space. A worker in a reflective vest steps from the right edge and walks across the ego lane near the stop line, briefly occupying the path. Ahead at the junction, a white van on the cross street moves rightward, passing through before the ego can proceed. On the left verge, a bicyclist rides slowly forward beside the cones and could merge into the narrowed lane. A Japanese stop sign and large stop marking indicate the ego must stop at the intersection.", "hazard_reasoning": "There are red and blue traffic cones on the left side of the street, in the ego lane, because of construction work on the left side of the road. The driver should manoeuvre carefully to avoid the cones and maintain safe passage."}
{"id": "train_02681", "split": "train", "clip_key": "titan_clip_274_000438_movie", "source": {"subset": "titan", "scenario": "clip_274", "frame": "000438"}, "frames": ["titan_clip_274_000438_movie_t-3.jpg", "titan_clip_274_000438_movie_t-2.jpg", "titan_clip_274_000438_movie_t-1.jpg", "titan_clip_274_000438_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked minivan", "environment_perception": "An urban back street with a narrow two-way carriageway and no centerline runs between close buildings; the dry pavement looks smooth and traffic is light with no moving vehicles ahead. Ahead on the left curb, a small delivery van is stopped with its rear open as it is being unloaded, slightly narrowing the ego path. A person stands at the back of this vehicle at the edge of the lane handling items. On the right, a dark minivan is parked under a raised structure and stays clear of the roadway. No notable traffic signals or signs are visible.", "hazard_reasoning": "There is a gray minivan parked on the left side of the road, because it is being unloaded. It narrows the available lane space, so you should manoeuvre carefully around it to avoid collision."}
{"id": "train_02682", "split": "train", "clip_key": "2020-0210-101957_029291_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "029291"}, "frames": ["2020-0210-101957_029291_movie_t-3.jpg", "2020-0210-101957_029291_movie_t-2.jpg", "2020-0210-101957_029291_movie_t-1.jpg", "2020-0210-101957_029291_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane each direction runs under an elevated expressway, with smooth pavement and a painted orange centerline; traffic is moderate and slows to a standstill near a signalized intersection ahead. A black minivan directly ahead in the ego lane is stopped because congestion blocks the way forward, constraining the ego vehicle. Two trucks wait along the left roadside just ahead, remaining stationary and outside the ego lane. Overhead traffic lights and turn-restriction signs are visible at the junction.", "hazard_reasoning": "There is a black minivan stopped in the ego lane in front of the ego car, because of traffic congestion ahead. The stopped vehicle indicates a traffic queue, so the driver should stop to avoid a rear-end collision."}
{"id": "train_02683", "split": "train", "clip_key": "2020-0227-104226_033751_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "033751"}, "frames": ["2020-0227-104226_033751_movie_t-3.jpg", "2020-0227-104226_033751_movie_t-2.jpg", "2020-0227-104226_033751_movie_t-1.jpg", "2020-0227-104226_033751_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction, no median, and smooth pavement shows moderate traffic that bunches up ahead. A white box truck directly ahead in the ego lane slows into a short queue, reducing the ego vehicle's pace in congestion. A white SUV approaches in the oncoming lane to the right and continues straight past without interaction. Farther ahead, additional oncoming trucks move toward the camera while several same-direction vehicles in front of the box truck roll slowly, sustaining the backup.", "hazard_reasoning": "There is a white truck slowing down in the ego lane because there is traffic congestion in front of the ego car. Slow down to maintain a safe distance and avoid collision."}
{"id": "train_02684", "split": "train", "clip_key": "2020-0226-140503_032977_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "032977"}, "frames": ["2020-0226-140503_032977_movie_t-3.jpg", "2020-0226-140503_032977_movie_t-2.jpg", "2020-0226-140503_032977_movie_t-1.jpg", "2020-0226-140503_032977_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of cyclist entering your lane", "environment_perception": "An urban street with mid- and high-rise buildings has two lanes in the ego vehicle's direction and a narrow raised island with guardrails on the right as it approaches a signalized intersection; the pavement is dry and worn and traffic flows at a slow to moderate pace. A black van directly ahead in the ego lane continues straight and eases near the zebra crossing, controlling the ego car's speed. In the adjacent right lane, a small truck travels parallel toward the junction beside the guardrail. On the left edge, a cyclist wearing a blue coat rides away along the curbside strip, staying at the side of the road and moving away from the ego vehicle. The overhead signal shows green.", "hazard_reasoning": "There is a cyclist wearing a blue coat, cycling at the left side of the road, away from the ego car. The cyclist could veer into the ego vehicle's path due to proximity, so the driver should be cautious."}
{"id": "train_02685", "split": "train", "clip_key": "2020-0212-102546_012489_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "012489"}, "frames": ["2020-0212-102546_012489_movie_t-3.jpg", "2020-0212-102546_012489_movie_t-2.jpg", "2020-0212-102546_012489_movie_t-1.jpg", "2020-0212-102546_012489_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban signalized intersection on a multi-lane two-way road has smooth pavement and light traffic; a short divider with flexible bollards separates a right-turn channel. A large white box truck directly ahead in the ego lane accelerates away from the ego car, opening a gap as both move through the junction. A small white kei truck on the cross street to the right approaches in the oncoming direction and continues in its lane without entering the ego path. Overhead signal heads are visible at the junction, and crosswalks are clearly marked.", "hazard_reasoning": "There is a white truck in the ego lane, accelerating away from the ego car. Once the light turns green and the path is clear, the driver should start moving promptly."}
{"id": "train_02686", "split": "train", "clip_key": "2020-0206-142535_013007_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "013007"}, "frames": ["2020-0206-142535_013007_movie_t-3.jpg", "2020-0206-142535_013007_movie_t-2.jpg", "2020-0206-142535_013007_movie_t-1.jpg", "2020-0206-142535_013007_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "A dense urban, signalized multi-lane intersection with smooth pavement lies ahead, and overall traffic is moderate, with same-direction vehicles halted at the stop line while cross-street flow continues. Directly in front of the ego vehicle, a stream of pedestrians crosses the zebra crossing from left to right, including one wearing black pants and carrying a backpack, and they occupy the ego lane, preventing movement. Cars on the cross street pass through the junction from right to left, while a few vehicles wait beyond the crossing.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying a backpack, crossing the street at the pedestrian crosswalk, from the left side of the street to the right. The driver should stop immediately to yield to the pedestrian and prevent a collision."}
{"id": "train_02687", "split": "train", "clip_key": "2020-0127-132751_082750_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "082750"}, "frames": ["2020-0127-132751_082750_movie_t-3.jpg", "2020-0127-132751_082750_movie_t-2.jpg", "2020-0127-132751_082750_movie_t-1.jpg", "2020-0127-132751_082750_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in each direction runs between mid-rise buildings, separated by a low concrete median; the asphalt looks dry and smooth, and traffic is light. Ahead in the ego lane, a green truck drives away at a steady pace, subtly constraining the ego car. On the opposite side to the right, a few oncoming cars proceed in their lanes behind the median. A pedestrian walks along the right sidewalk near storefronts, remaining clear of the roadway. Blue-painted bicycle lanes line the curbs, and there are no obstacles or work zones visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02688", "split": "train", "clip_key": "titan_clip_939_000522_movie", "source": {"subset": "titan", "scenario": "clip_939", "frame": "000522"}, "frames": ["titan_clip_939_000522_movie_t-3.jpg", "titan_clip_939_000522_movie_t-2.jpg", "titan_clip_939_000522_movie_t-1.jpg", "titan_clip_939_000522_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead.", "environment_perception": "A narrow urban commercial street with a single undivided carriageway and smooth pavement shows light traffic with no nearby vehicles. On the left side of the road in the ego lane, a male pedestrian in a white shirt and black pants stands near the curb within the path ahead. Farther ahead, another pedestrian crosses the lane from right to left while a few others walk along the sidewalks, briefly using the roadway. A person at a storefront on the right edge holds a sign and remains off the lane. Numerous shop signboards and displays sit close to the curbs, narrowing the usable space though the lane stays passable.", "hazard_reasoning": "There is a male pedestrian wearing a white shirt and black pants, standing on the left side of the road, in the ego lane. He could enter the vehicle's path unexpectedly, so the driver should be cautious and ready to slow down."}
{"id": "train_02689", "split": "train", "clip_key": "2020-0220-102630_048767_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "048767"}, "frames": ["2020-0220-102630_048767_movie_t-3.jpg", "2020-0220-102630_048767_movie_t-2.jpg", "2020-0220-102630_048767_movie_t-1.jpg", "2020-0220-102630_048767_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three lanes in the ego direction has smooth pavement and clear markings, and traffic moves at a steady moderate pace. Ahead in the ego lane, a black van drives away gradually, setting the pace for the ego vehicle. Slightly ahead to the right, a white box truck continues straight in the adjacent lane at a similar speed, limiting a rightward lane change. On the opposite carriageway to the right beyond the median, oncoming cars pass steadily, separated from the ego by the divider and not interacting.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. The driver should be cautious because the van ahead may slow or brake unexpectedly."}
{"id": "train_02690", "split": "train", "clip_key": "2020-0214-102601_032170_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "032170"}, "frames": ["2020-0214-102601_032170_movie_t-3.jpg", "2020-0214-102601_032170_movie_t-2.jpg", "2020-0214-102601_032170_movie_t-1.jpg", "2020-0214-102601_032170_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs under an elevated expressway with clear, dry pavement; traffic is heavy and largely stopped. A white sedan ahead in the ego lane is stopped because of congestion, directly blocking the ego vehicle. In the left lane, a silver van just ahead remains halted in the queue, limiting any move to the left. To the right, a white hatchback alongside is stationary in its lane, leaving little space for a lane change. Farther ahead, buses and trucks cluster under the flyover, forming the visible backup.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, because of traffic congestion ahead. The stopped sedan indicates a sudden reduction in speed that requires the driver to stop to avoid a collision."}
{"id": "train_02691", "split": "train", "clip_key": "2020-0220-102630_120090_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "120090"}, "frames": ["2020-0220-102630_120090_movie_t-3.jpg", "2020-0220-102630_120090_movie_t-2.jpg", "2020-0220-102630_120090_movie_t-1.jpg", "2020-0220-102630_120090_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane per direction and a solid yellow centerline runs through a residential area; the pavement is smooth and overall traffic is light but paused ahead. A white scooter is stopped in the ego lane directly in front, occupying the path. Farther ahead in the same lane, a black minivan waits behind a small utility vehicle, keeping the queue from moving. The oncoming lane to the right remains clear, and no salient traffic signals or unusual signage are visible.", "hazard_reasoning": "There is a white scooter stopped in the ego lane because of a red traffic light ahead. The driver should stop to maintain a safe following distance and comply with the red signal."}
{"id": "train_02692", "split": "train", "clip_key": "2020-0131-103016_021673_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "021673"}, "frames": ["2020-0131-103016_021673_movie_t-3.jpg", "2020-0131-103016_021673_movie_t-2.jpg", "2020-0131-103016_021673_movie_t-1.jpg", "2020-0131-103016_021673_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with a gentle uphill grade runs between mid-rise buildings; the ego vehicle travels in a single left-hand lane on dry, fairly smooth asphalt, separated from opposite traffic by a metal fence median, and overall traffic is light. A white box truck ahead in the ego lane continues uphill and pulls farther away because the lane ahead is clear. Several oncoming cars move along the right-side carriageway beyond the fence without affecting the ego path. A large truck is stopped at the left curb near the camera. A pedestrian overpass spans the road ahead.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because the road ahead is clear. Follow the vehicle ahead to maintain a safe distance and prepare for potential stops at the red light."}
{"id": "train_02693", "split": "train", "clip_key": "2020-0131-135401_039711_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "039711"}, "frames": ["2020-0131-135401_039711_movie_t-3.jpg", "2020-0131-135401_039711_movie_t-2.jpg", "2020-0131-135401_039711_movie_t-1.jpg", "2020-0131-135401_039711_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each direction curves gently downhill, divided by a solid yellow centerline; the pavement looks smooth and traffic is light. A white sedan ahead in the ego lane slows because a car further ahead is turning left, so the sedan constrains the ego vehicle's pace. In the opposing lane to the right, a white van approaches and passes steadily. At the left edge near a crosswalk, a blue hatchback noses out from a driveway and waits to merge, close to the curb where it may enter the roadway. An overhead blue direction sign spans the road as buildings line both sides and a guardrail borders the right.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car in the ego lane because of a car ahead turning left. The driver should slow down to maintain a safe following distance and prepare for potential sudden stops."}
{"id": "train_02694", "split": "train", "clip_key": "2020-0226-140503_081443_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "081443"}, "frames": ["2020-0226-140503_081443_movie_t-3.jpg", "2020-0226-140503_081443_movie_t-2.jpg", "2020-0226-140503_081443_movie_t-1.jpg", "2020-0226-140503_081443_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with traffic ahead.", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between tall buildings, divided from oncoming lanes by a narrow fenced median; the pavement is dry and intact, and traffic in the ego's direction is heavy and mostly stopped. Ahead in the ego lane, a white compact hatchback is stopped because of congestion and holds the ego car. In the lane to the left, a large box truck rolls slowly then halts slightly ahead, limiting forward visibility and blocking a lane change. Alongside on the far left, a white minivan inches forward next to the ego vehicle, further constraining space. Oncoming traffic beyond the median moves more steadily.", "hazard_reasoning": "There is a white compact hatchback stopped in the ego lane in front of the ego car, because of traffic congestion ahead. The driver needs to stop promptly to maintain a safe distance and prevent a rear-end collision in this congested traffic."}
{"id": "train_02695", "split": "train", "clip_key": "titan_clip_1285_000150_movie", "source": {"subset": "titan", "scenario": "clip_1285", "frame": "000150"}, "frames": ["titan_clip_1285_000150_movie_t-3.jpg", "titan_clip_1285_000150_movie_t-2.jpg", "titan_clip_1285_000150_movie_t-1.jpg", "titan_clip_1285_000150_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban two-way residential street with one lane per direction and no median runs between close buildings; the asphalt looks worn but intact, and traffic is light. A gray box truck drives ahead in the ego lane moving away from the camera and controls the ego car's pace. Two pedestrians are on the left sidewalk behind a low guardrail, walking along the curb and staying out of the lane. Several parked cars line the right side, narrowing the usable roadway. No oncoming vehicles or traffic signals are visible, and the scene remains steady without notable changes.", "hazard_reasoning": "There is a gray truck driving in the ego lane away from the ego car. The truck ahead may change speed or brake unexpectedly, so the driver should be aware and maintain a safe distance under this situation."}
{"id": "train_02696", "split": "train", "clip_key": "2020-0205-103411_077526_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-103411_077526_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-103411_077526_movie_t-3_augB1.jpg", "2020-0205-103411_077526_movie_t-2_augB1.jpg", "2020-0205-103411_077526_movie_t-1_augB1.jpg", "2020-0205-103411_077526_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth asphalt and no physical median unfolds ahead, with three lanes in the ego direction and light to moderate flow that eases toward a distant junction. Ahead in the ego lane, a green tarped truck travels near and gradually slows as it approaches building traffic further ahead, constraining the ego vehicle's pace. Slightly ahead to the left, a white box truck in the adjacent lane continues at a similar speed, partially blocking forward visibility and limiting room to pass.", "hazard_reasoning": "There is a green truck slowing in the ego lane because of traffic congestion ahead on the road. The slowing truck indicates reduced speeds and possible queueing ahead, so you should slow down to maintain a safe following distance and avoid sudden braking."}
{"id": "train_02697", "split": "train", "clip_key": "2020-0205-103411_058210_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "058210"}, "frames": ["2020-0205-103411_058210_movie_t-3.jpg", "2020-0205-103411_058210_movie_t-2.jpg", "2020-0205-103411_058210_movie_t-1.jpg", "2020-0205-103411_058210_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial passes between tall buildings, with three lanes in the same direction and a raised shrub-lined median on the right separating opposite traffic; the dry pavement looks smooth and traffic is light and steady. A gray truck drives ahead in the ego lane, pulling away and effectively setting the pace. A white box truck travels slightly ahead in the lane to the left, maintaining a parallel course. Along the far left curb several delivery trucks are parked, leaving the leftmost lane clear. Overhead gantry structures span the road, and no signals or unusual controls are apparent.", "hazard_reasoning": "There is a gray truck driving in the ego lane away from the ego car. The truck ahead may slow down or brake unexpectedly, so the driver should stay alert and maintain a safe following distance."}
{"id": "train_02698", "split": "train", "clip_key": "2020-0131-135401_002167_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "002167"}, "frames": ["2020-0131-135401_002167_movie_t-3.jpg", "2020-0131-135401_002167_movie_t-2.jpg", "2020-0131-135401_002167_movie_t-1.jpg", "2020-0131-135401_002167_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with one lane in each direction runs between close buildings; the pavement is smooth and a solid yellow centerline divides the directions, with overall light flow. A white semi-truck is stopped directly ahead in the ego lane, blocking the path and holding the ego vehicle. The oncoming lane to the right shows no vehicles near the camera, and there is no evident gap around the truck within the lane. A parked bicycle sits on the right sidewalk and shopfronts line the left, but no pedestrians enter the roadway. No traffic signals or other salient controls are visible in this short view.", "hazard_reasoning": "There is a white semi-truck stopped in front of the ego car. The truck's brake lights indicate it may remain stationary, so the driver must stop to avoid a collision."}
{"id": "train_02699", "split": "train", "clip_key": "titan_clip_543_000162_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_543_000162_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_543_000162_movie_t-3_augB1.jpg", "titan_clip_543_000162_movie_t-2_augB1.jpg", "titan_clip_543_000162_movie_t-1_augB1.jpg", "titan_clip_543_000162_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian pushing trolley", "environment_perception": "A narrow urban street with mid-rise buildings and smooth pavement lacks a centerline and carries light traffic, with only the ego vehicle moving. Parked cars and small signboards line the right shoulder, slightly narrowing the usable lane. Far ahead in the middle of the roadway, a pedestrian in a blue T-shirt pushes a trolley slowly toward the right side without a pedestrian crosswalk, occupying the ego path and temporarily constraining its progress. No traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt, pushing a trolley in the middle of the road towards the right side of the road, because there is no pedestrian crosswalk. The pedestrian's unpredictable movement across lanes poses a collision risk, so the driver should be aware and adjust speed or course accordingly."}
{"id": "train_02700", "split": "train", "clip_key": "2020-0131-135401_039714_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "039714"}, "frames": ["2020-0131-135401_039714_movie_t-3.jpg", "2020-0131-135401_039714_movie_t-2.jpg", "2020-0131-135401_039714_movie_t-1.jpg", "2020-0131-135401_039714_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban downhill two-way road with a solid yellow centerline runs between mid-rise buildings, the pavement smooth and dry, with moderate flow that compresses ahead. A white hatchback directly ahead in the ego lane slows because of congestion further down the hill, constraining the ego car's pace. A light blue car waits at the left side street at a zebra crossing, angled toward the main road and poised to merge into the ego lane. An oncoming white van travels uphill in the right lane, continuing straight within its lane. An overhead blue direction sign spans the road in the distance, and a guardrail lines the right edge.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision due to the reduced speeds in the congested traffic."}
{"id": "train_02701", "split": "train", "clip_key": "titan_clip_413_000354_movie", "source": {"subset": "titan", "scenario": "clip_413", "frame": "000354"}, "frames": ["titan_clip_413_000354_movie_t-3.jpg", "titan_clip_413_000354_movie_t-2.jpg", "titan_clip_413_000354_movie_t-1.jpg", "titan_clip_413_000354_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction, no median, and smooth pavement curves gently right with light traffic. Ahead of the ego vehicle, a pedestrian holding an umbrella steps from the right sidewalk and crosses midblock toward the left, moving toward the ego lane and potentially constraining speed. Farther ahead along the oncoming-side curb, several motorcycles are stopped and riders cluster near them, narrowing that edge but remaining outside the ego lane. Additional pedestrians walk along the right sidewalk near storefronts and pause at the curb without entering the roadway.", "hazard_reasoning": "A pedestrian carrying an umbrella is crossing in the middle to the road to the left side. The driver should slow down to avoid hitting the pedestrian and allow safe passage."}
{"id": "train_02702", "split": "train", "clip_key": "2020-0203-154554_027358_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "027358"}, "frames": ["2020-0203-154554_027358_movie_t-3.jpg", "2020-0203-154554_027358_movie_t-2.jpg", "2020-0203-154554_027358_movie_t-1.jpg", "2020-0203-154554_027358_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between tall buildings under an elevated roadway; the pavement is dry and smooth, and traffic is heavy with a mostly stationary queue. A gray flatbed truck has stopped directly ahead in the ego lane because of congestion, holding the ego vehicle at a standstill. In the left lane slightly ahead, a black taxi idles with brake lights on, creeping forward and limiting any leftward merge. In the right lane ahead and alongside, a white van also waits in line, moving slowly and keeping pace with the queue. A signalized intersection is visible ahead.", "hazard_reasoning": "There's a gray truck that has stopped in front of the ego car in the ego lane, because of traffic congestion. Stop immediately to avoid colliding with the halted truck and ensure you can react safely under the obstructed view."}
{"id": "train_02703", "split": "train", "clip_key": "titan_clip_1227_000294_movie", "source": {"subset": "titan", "scenario": "clip_1227", "frame": "000294"}, "frames": ["titan_clip_1227_000294_movie_t-3.jpg", "titan_clip_1227_000294_movie_t-2.jpg", "titan_clip_1227_000294_movie_t-1.jpg", "titan_clip_1227_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban back street with a single uphill lane and no median has worn pavement and light flow, but the lane is partly blocked by a box truck ahead. A white box truck directly ahead in the ego lane is stopped or creeping near the center, constraining the ego vehicle's path. On the left side, a pedestrian in a black shirt carrying a handbag walks away from the ego car along the curb, close to the edge and able to enter the lane. Farther ahead on the left, two pedestrians linger near the curb and edge slightly toward the roadway, making them relevant to the ego path. Parked vans and scooters line the right side with traffic cones, narrowing the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a handbag, walking on the left side of the road, away from the ego car. The pedestrian may suddenly cross into the driving lane, so the driver should be prepared to reduce speed and maintain vigilance."}
{"id": "train_02704", "split": "train", "clip_key": "titan_clip_145_000456_movie", "source": {"subset": "titan", "scenario": "clip_145", "frame": "000456"}, "frames": ["titan_clip_145_000456_movie_t-3.jpg", "titan_clip_145_000456_movie_t-2.jpg", "titan_clip_145_000456_movie_t-1.jpg", "titan_clip_145_000456_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban, undivided two-way street with a single lane per direction is shown, the pavement is in good condition, and traffic is light as the car approaches a small intersection with a zebra crosswalk. A pedestrian wearing a handbag and a black skirt crosses from the left across the crosswalk immediately ahead toward the right side of the road, moving through the ego lane and constraining the pace. A blue pedestrian crossing sign stands on a pole at the left of the crosswalk. Several vehicles are parked along the left curb, including a black car near the camera and vans farther ahead, narrowing the view but not moving.", "hazard_reasoning": "A pedestrian wearing a handbag and black skirt is crossing at the pedestrian crosswalk to the right side of the road. The driver should stop because the pedestrian is entering the roadway and has the right of way."}
{"id": "train_02705", "split": "train", "clip_key": "2020-0207-101955_042248_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "042248"}, "frames": ["2020-0207-101955_042248_movie_t-3.jpg", "2020-0207-101955_042248_movie_t-2.jpg", "2020-0207-101955_042248_movie_t-1.jpg", "2020-0207-101955_042248_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated expressway, with two same-direction lanes separated from oncoming traffic by a low planted median; the dry pavement looks smooth and traffic remains light throughout. A black sedan ahead in the ego lane travels straight under the structure and gradually pulls away, setting the immediate pace. Farther ahead, a small light-colored car in the same direction continues straight with a larger gap. On the right, two medium trucks are stationary in a curbside bay at a tapering merge area, remaining outside the travel lane as the ego vehicle proceeds past them.", "hazard_reasoning": "There are no imminent hazards visible, so the driver can maintain normal speed and lane position."}
{"id": "train_02706", "split": "train", "clip_key": "titan_clip_1053_000192_movie", "source": {"subset": "titan", "scenario": "clip_1053", "frame": "000192"}, "frames": ["titan_clip_1053_000192_movie_t-3.jpg", "titan_clip_1053_000192_movie_t-2.jpg", "titan_clip_1053_000192_movie_t-1.jpg", "titan_clip_1053_000192_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian pushing trolley crossing", "environment_perception": "A narrow urban two-way street with single lanes and no median runs between mid-rise buildings; the asphalt looks smooth and overall traffic is light and slow. To the left along the curb, a large silver box truck is stopped or creeping, narrowing the usable lane. Ahead in the same direction, a black van proceeds steadily and loosely sets the pace. A pedestrian wearing a white T-shirt and black pants pushes a trolley across the roadway from the left to the right, passing in front of the truck and crossing the ego lane. A parking garage entrance with Times P signage opens on the right, and several vehicles are parked along both curbs.", "hazard_reasoning": "A pedestrian wearing a white t-shirt with black pants is pushing a trolley crossing the street, from the left to the right side of the road. The pedestrian and trolley may move unpredictably into the vehicle's path, so the driver should be aware and adjust speed to avoid a potential collision."}
{"id": "train_02707", "split": "train", "clip_key": "2020-0131-135401_023246_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "023246"}, "frames": ["2020-0131-135401_023246_movie_t-3.jpg", "2020-0131-135401_023246_movie_t-2.jpg", "2020-0131-135401_023246_movie_t-1.jpg", "2020-0131-135401_023246_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs straight with smooth pavement and a coned work zone narrowing the right side; traffic is light and generally moving. A black van ahead in the ego lane pulls away with the flow, creating increasing space as traffic ahead moves. To the right front, a construction lorry sits slow or briefly stopped beside cones, partly occupying the adjacent lane and encouraging vehicles to keep left. On the far right shoulder, several road workers kneel and handle materials within the coned area, close to the live lane but outside the ego path. Additional cars continue ahead in the same direction at moderate speed, with no evident oncoming traffic or median changes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02708", "split": "train", "clip_key": "titan_clip_980_000552_movie", "source": {"subset": "titan", "scenario": "clip_980", "frame": "000552"}, "frames": ["titan_clip_980_000552_movie_t-3.jpg", "titan_clip_980_000552_movie_t-2.jpg", "titan_clip_980_000552_movie_t-1.jpg", "titan_clip_980_000552_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with two-way traffic and no median, narrow and slightly worn pavement, carries light flow. The ego travels on the left side of the road. On the right near the curb, a cyclist in a black shirt rides toward the ego because the sidewalk by the shops is blocked, passing close to the vehicle's path. In the center ahead, another oncoming cyclist approaches down the middle, reducing available space. Farther ahead along the left edge, a cyclist moving in the same direction rides away and slightly constrains pace. Storefront displays and carts narrow the right-side sidewalk and edge of the lane.", "hazard_reasoning": "There is a cyclist wearing a black shirt, cycling on the right side of the road, towards the ego car, because the sidewalk is blocked. Because the sidewalk is blocked, the cyclist has moved into the roadway, increasing collision risk, so the driver should slow down."}
{"id": "train_02709", "split": "train", "clip_key": "2020-0210-101957_009131_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "009131"}, "frames": ["2020-0210-101957_009131_movie_t-3.jpg", "2020-0210-101957_009131_movie_t-2.jpg", "2020-0210-101957_009131_movie_t-1.jpg", "2020-0210-101957_009131_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane two-way street with a solid center line runs between mid-rise buildings; the pavement looks smooth and traffic is moderate but bunching ahead. Ahead in the ego lane, a green sedan slows because congestion ahead, directly constraining the ego car's pace. Farther ahead in the same lane, a large bus decelerates near the curb, forming the queue the sedan follows. In the opposing lane to the right, a black minivan approaches and passes at normal speed, remaining within its lane.", "hazard_reasoning": "There is a green sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. You should reduce speed to maintain a safe following distance and avoid a collision."}
{"id": "train_02710", "split": "train", "clip_key": "2020-0203-114632_090887_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "090887"}, "frames": ["2020-0203-114632_090887_movie_t-3.jpg", "2020-0203-114632_090887_movie_t-2.jpg", "2020-0203-114632_090887_movie_t-1.jpg", "2020-0203-114632_090887_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for red light ahead", "environment_perception": "An urban multilane arterial runs beneath an elevated structure, the pavement appears dry and smooth, and traffic in the same direction is heavy and stopped at a signal. A white minivan directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle. A large box truck in the right adjacent lane stands slightly ahead and stationary, limiting right-side visibility. To the left, a blue refuse truck waits in its lane alongside, contributing to the queue. The signal heads ahead display red.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car in the ego lane because of a red traffic light. The driver should stop to avoid colliding with the halted vehicle ahead at the intersection."}
{"id": "train_02711", "split": "train", "clip_key": "titan_clip_7_000342_movie", "source": {"subset": "titan", "scenario": "clip_7", "frame": "000342"}, "frames": ["titan_clip_7_000342_movie_t-3.jpg", "titan_clip_7_000342_movie_t-2.jpg", "titan_clip_7_000342_movie_t-1.jpg", "titan_clip_7_000342_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single lane in each direction has smooth pavement and light traffic, with no median and a small intersection ahead. On the near left at the zebra crossing, a man in a white shirt talks on the phone while walking across the roadway, moving into and across the ego lane where he may enter the path. Far ahead in the same direction, a white car proceeds slowly near the intersection, loosely setting the pace. On the right sidewalk near the junction, two pedestrians stand by a crosswalk but remain off the road. A pedestrian crossing sign is posted on the corner building, and a traffic signal is suspended over the intersection.", "hazard_reasoning": "There is a pedestrian talking on the phone and crossing the street at a pedestrian crossing, away from the ego car. The pedestrian may step unpredictably while distracted, so the driver should stop to yield and prevent a collision."}
{"id": "train_02712", "split": "train", "clip_key": "2020-0227-153144_028782_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "028782"}, "frames": ["2020-0227-153144_028782_movie_t-3.jpg", "2020-0227-153144_028782_movie_t-2.jpg", "2020-0227-153144_028782_movie_t-1.jpg", "2020-0227-153144_028782_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection with a raised curb median on the right is seen under strong low sun; the pavement is dry and traffic is light. Directly ahead, a white van in the ego lane is stopped at a red light, holding the lane. In front of that van, a cyclist crosses left to right through the crosswalk at low speed, passing close to the stopped vehicle. On the far left, a pedestrian steps onto the crosswalk and walks rightward across the junction ahead of the queue. The glare from the sun reduces contrast and overall visibility.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane because of a red traffic light. The driver should stop to avoid rear-ending the vehicle and obey the traffic signal."}
{"id": "train_02713", "split": "train", "clip_key": "2020-0228-102841_004248_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "004248"}, "frames": ["2020-0228-102841_004248_movie_t-3.jpg", "2020-0228-102841_004248_movie_t-2.jpg", "2020-0228-102841_004248_movie_t-1.jpg", "2020-0228-102841_004248_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for crossing pedestrian", "environment_perception": "An urban street passes through a construction zone that narrows to a single temporary lane bordered by barriers and cones, with patched pavement; traffic is light and slow. A white work truck ahead in the ego lane rolls cautiously toward the choke point, constraining the ego vehicle's pace. Farther ahead in the same direction, a small car is stopped near the intersection beyond the work area. On the right, an oncoming car moves slowly past the site behind separate barriers and does not enter the ego lane. Stacked materials, scaffolding, and equipment encroach on the right shoulder, but no pedestrians are visible.", "hazard_reasoning": "There is a pedestrian wearing a black coat, crossing the street at the pedestrian crossing, from the left side to the right side. The driver should stop to allow the pedestrian to cross safely and avoid a collision."}
{"id": "train_02714", "split": "train", "clip_key": "2020-0225-102455_086210_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "086210"}, "frames": ["2020-0225-102455_086210_movie_t-3.jpg", "2020-0225-102455_086210_movie_t-2.jpg", "2020-0225-102455_086210_movie_t-1.jpg", "2020-0225-102455_086210_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes and no median runs between mid-rise buildings; the asphalt is dry and in good condition. Traffic is heavy and slow with a queue forming ahead. A white hatchback directly ahead in the ego left lane slows and stops because of congestion, constraining the ego car. In the adjacent right lane, a large dump truck is stopped alongside in the queue, close to the ego path and limiting the right-side view. Farther ahead on the lane divider, a motorcyclist filters forward between lanes past the stopped vehicles and may enter the ego lane.", "hazard_reasoning": "There is a white hatchback stopping in the ego lane, in front of the ego car, because of traffic congestion ahead. The sudden halt of the hatchback amid slowing traffic increases the risk of a rear-end collision, so you should stop to maintain a safe following distance."}
{"id": "train_02715", "split": "train", "clip_key": "titan_clip_436_000078_movie", "source": {"subset": "titan", "scenario": "clip_436", "frame": "000078"}, "frames": ["titan_clip_436_000078_movie_t-3.jpg", "titan_clip_436_000078_movie_t-2.jpg", "titan_clip_436_000078_movie_t-1.jpg", "titan_clip_436_000078_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban shopping street with block-paved surface is undivided and shows light traffic with good pavement. A white truck is stopped just ahead along the left edge in the ego lane with its hazard lights flashing, occupying the path and prompting a slow approach. A pedestrian walks ahead in the middle of the lane near the truck, moving away from the camera and potentially constraining the vehicle's pace. Another pedestrian on the right side walks along the curb and stays clear of the lane. A no-parking signboard stands on the right sidewalk.", "hazard_reasoning": "There is a white truck flashing its hazard lights, parked on the left side of the road, in the ego lane. The parked truck blocks the driving lane and creates a blind spot, so the driver should carefully manoeuvre around it."}
{"id": "train_02716", "split": "train", "clip_key": "2020-0214-145407_039773_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "039773"}, "frames": ["2020-0214-145407_039773_movie_t-3.jpg", "2020-0214-145407_039773_movie_t-2.jpg", "2020-0214-145407_039773_movie_t-1.jpg", "2020-0214-145407_039773_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs under an elevated expressway, with same-direction traffic only and a curbside sidewalk; the red asphalt appears dry and smooth, and flow is heavy and slow. A black van directly ahead in the ego lane slows in stop-and-go traffic because of congestion ahead, constraining the ego car's pace. To the right, a line of cars in the adjacent lane creeps forward beside the ego vehicle, leaving little room to merge. Farther ahead, a small box truck and several cars queue and inch forward in the same direction.", "hazard_reasoning": "There is a black van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Slow down to maintain a safe following distance and avoid collision with the slowing van."}
{"id": "train_02717", "split": "train", "clip_key": "titan_clip_1317_000234_movie", "source": {"subset": "titan", "scenario": "clip_1317", "frame": "000234"}, "frames": ["titan_clip_1317_000234_movie_t-3.jpg", "titan_clip_1317_000234_movie_t-2.jpg", "titan_clip_1317_000234_movie_t-1.jpg", "titan_clip_1317_000234_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street without a centerline runs between close shopfronts, the pavement dry and slightly worn, with very light traffic and no moving vehicles ahead. A pedestrian in a pink shirt and brown pants carrying a black handbag walks ahead along the right edge in the ego lane, moving away from the car because there is no sidewalk and potentially constraining the path. On the left foreground, another pedestrian nears the carriageway beside parked bicycles and cafe chairs, drifting partly into the lane and possibly encroaching. Farther ahead near the junction, a person on the left side walks along the curb in the same direction but remains outside the lane. Parked bicycles, stacked boxes, and street furniture narrow the usable space along the left edge.", "hazard_reasoning": "There is a pedestrian wearing a pink shirt, brown pants and carrying a black handbag, walking up the right side of the street in the ego lane, away from the ego-car, because there is no sidewalk. The driver should manoeuvre carefully around the pedestrian to avoid a potential collision in the absence of a sidewalk."}
{"id": "train_02718", "split": "train", "clip_key": "titan_clip_314_000588_movie", "source": {"subset": "titan", "scenario": "clip_314", "frame": "000588"}, "frames": ["titan_clip_314_000588_movie_t-3.jpg", "titan_clip_314_000588_movie_t-2.jpg", "titan_clip_314_000588_movie_t-1.jpg", "titan_clip_314_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian carefully", "environment_perception": "An urban commercial alley with a single narrow shared lane and block-pattern pavement has no divider or markings, and vehicle traffic is light amid many pedestrians. On the right side, a pedestrian wearing a black shirt and blue pants walks toward the ego vehicle along the roadway and may drift into the lane. Ahead in the middle of the lane, another pedestrian walks away from the camera, occupying the path and effectively setting the pace. Farther ahead near the center, a small white van is stopped or creeping, reducing the available space. Shopfront signs and displays line both sides but remain off the travel path.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and blue pants, walking on the right side of the road, towards the ego car. The driver should manoeuvre around the pedestrian carefully to avoid a potential collision."}
{"id": "train_02719", "split": "train", "clip_key": "titan_clip_477_000072_movie", "source": {"subset": "titan", "scenario": "clip_477", "frame": "000072"}, "frames": ["titan_clip_477_000072_movie_t-3.jpg", "titan_clip_477_000072_movie_t-2.jpg", "titan_clip_477_000072_movie_t-1.jpg", "titan_clip_477_000072_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the stopped vehicle", "environment_perception": "A narrow urban commercial street with a single undivided lane and block-paved surface is shown, with no median and light traffic. A black van is stopped ahead on the right side in the ego lane, partly blocking the lane and constraining the through path. Two pedestrians stand on the left sidewalk outside a shop near the bollards, close to the curb but remaining off the roadway. Additional pedestrians walk farther ahead along both sidewalks. Short bollards line the left edge and buildings closely flank the roadway, leaving limited lateral space as the street gently bends ahead.", "hazard_reasoning": "There is a black van stopped on the right side of the road, in the ego lane. The van obstructs the driving lane, so the driver should carefully manoeuvre around it to avoid a collision and maintain safe passage."}
{"id": "train_02720", "split": "train", "clip_key": "2020-0228-102841_051782_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "051782"}, "frames": ["2020-0228-102841_051782_movie_t-3.jpg", "2020-0228-102841_051782_movie_t-2.jpg", "2020-0228-102841_051782_movie_t-1.jpg", "2020-0228-102841_051782_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban street with two same direction lanes and no median runs between mid-rise buildings; the red-tinted pavement is smooth and traffic is briefly queued at an intersection. A white van directly ahead in the ego lane is stopped because the traffic light is red, holding the ego vehicle. To the right, a large box truck in the adjacent lane waits slightly ahead, matching the stop and limiting forward visibility. A pedestrian walks along the left sidewalk behind a railing, remaining off the roadway.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of the red traffic light. You should stop to avoid colliding with the halted van at the red signal."}
{"id": "train_02721", "split": "train", "clip_key": "2020-0214-145407_039967_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "039967"}, "frames": ["2020-0214-145407_039967_movie_t-3.jpg", "2020-0214-145407_039967_movie_t-2.jpg", "2020-0214-145407_039967_movie_t-1.jpg", "2020-0214-145407_039967_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway curves gently left with two same-direction lanes and red asphalt in good condition; traffic is heavy and moves slowly into a queue. Directly ahead in the ego lane, a black van slows because of congestion and controls the ego vehicle's pace. To the right, a gray sedan in the adjacent lane edges forward and overtakes, staying in its lane but close to the ego's path. On the left sidewalk, pedestrians walk behind a guardrail and do not approach the road. Large bridge pillars along the right create intermittent sightline occlusions as the vehicles pass.", "hazard_reasoning": "There is a black van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a collision due to the reduced speed of the van."}
{"id": "train_02722", "split": "train", "clip_key": "titan_clip_997_000294_movie", "source": {"subset": "titan", "scenario": "clip_997", "frame": "000294"}, "frames": ["titan_clip_997_000294_movie_t-3.jpg", "titan_clip_997_000294_movie_t-2.jpg", "titan_clip_997_000294_movie_t-1.jpg", "titan_clip_997_000294_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street passes under a low railway overpass, the pavement smooth and the carriageway narrow, with light traffic. The ego car proceeds in the left lane without a median as the bridge walls create a pinch point. A gray minivan is parked on the left side just ahead, protruding slightly into the ego lane and narrowing the passage. A man on the right sidewalk walks toward the camera near the curb but stays on the footway, while another pedestrian farther ahead moves away along the left sidewalk, not entering the lane. A small vehicle continues down the street in the same direction in the distance. A clearance sign on the bridge shows 4.1 m.", "hazard_reasoning": "There is a gray minivan parked on the left side of the road in front of ego-car. Because the parked vehicle may obstruct part of the lane and reduce available road width, the driver should slow down to safely navigate past it."}
{"id": "train_02723", "split": "train", "clip_key": "2020-0207-151349_086541_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "086541"}, "frames": ["2020-0207-151349_086541_movie_t-3.jpg", "2020-0207-151349_086541_movie_t-2.jpg", "2020-0207-151349_086541_movie_t-1.jpg", "2020-0207-151349_086541_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In an urban corridor beneath an elevated expressway, the ego-vehicle proceeds on a two-lane same-direction road with a dashed white lane line and a metal guardrail close on the right; the pavement is dry and traffic stays light. A motorcycle rides ahead in the ego lane at a steady speed near the lane center, effectively setting the ego vehicle's pace. Several pedestrians walk and wait on the left sidewalk by shops and a bus stop behind railings, remaining clear of the carriageway. No prominent traffic signals or posted speeds are visible.", "hazard_reasoning": "No hazards detected in the scene. The road is clear, traffic-free, and weather conditions are stable, so no immediate action is required."}
{"id": "train_02724", "split": "train", "clip_key": "titan_clip_1215_000360_movie", "source": {"subset": "titan", "scenario": "clip_1215", "frame": "000360"}, "frames": ["titan_clip_1215_000360_movie_t-3.jpg", "titan_clip_1215_000360_movie_t-2.jpg", "titan_clip_1215_000360_movie_t-1.jpg", "titan_clip_1215_000360_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street without a centerline runs between shops and offices, the pavement worn but intact and motor traffic light. A bicyclist ahead near the middle rides away from the camera, likely setting the ego vehicle's pace. On the right edge by the storefronts, a pedestrian wearing a white shirt and carrying a blue bag walks toward the ego vehicle along the roadway and may step into the lane. Two pedestrians ahead on the left walk away close to the curb, staying near but not blocking the travel path. A freestanding shop sign at the right curb protrudes slightly into the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a blue bag, walking on the right side of the road, towards the ego car. The pedestrian is approaching the vehicle's path and may cross in front, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_02725", "split": "train", "clip_key": "2020-0129-144857_039676_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "039676"}, "frames": ["2020-0129-144857_039676_movie_t-3.jpg", "2020-0129-144857_039676_movie_t-2.jpg", "2020-0129-144857_039676_movie_t-1.jpg", "2020-0129-144857_039676_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs under an elevated structure, with the ego vehicle in the rightmost lane beside a guardrail; the pavement is dry and traffic is heavy and largely stopped at a signal. A black minivan immediately ahead in the ego lane remains stationary because the traffic light ahead is red, holding the ego vehicle. Farther ahead in the same lane, a large box truck also sits stopped, reinforcing the queue. In the adjacent lanes to the left, a white hatchback in front and a small white van alongside are likewise waiting, inching forward with the line.", "hazard_reasoning": "There is a black minivan stopped in the ego lane, because of the red traffic lights ahead. You must stop to avoid colliding with the halted vehicle at the red signal."}
{"id": "train_02726", "split": "train", "clip_key": "titan_clip_901_000426_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_901_000426_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_901_000426_movie_t-3_augB1.jpg", "titan_clip_901_000426_movie_t-2_augB1.jpg", "titan_clip_901_000426_movie_t-1_augB1.jpg", "titan_clip_901_000426_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for the pedestrian crossing ahead", "environment_perception": "An urban shopping street with a single narrow unmarked lane on brick pavers and no median; traffic is very slow amid dense foot activity and a vehicle stopped along the left edge. In the middle of the lane ahead, a pedestrian in a blue dress with a backpack looks at a phone while crossing from left to right, directly across the ego path. Farther ahead, an oncoming light-blue truck approaches in the center of the road and slows, reducing the available space. Along the right edge near the curb, another pedestrian walks toward the camera close to the lane as they pass a crowd at a storefront. A large delivery truck is stopped along the left side, protruding into the lane and further narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a blue dress, carrying a backpack, and looking into their phone, who is in the middle of the road, crossing the street from the left side to the right side. The driver should stop for the pedestrian crossing ahead to avoid a collision with the distracted pedestrian."}
{"id": "train_02727", "split": "train", "clip_key": "2020-0129-105040_055626_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "055626"}, "frames": ["2020-0129-105040_055626_movie_t-3.jpg", "2020-0129-105040_055626_movie_t-2.jpg", "2020-0129-105040_055626_movie_t-1.jpg", "2020-0129-105040_055626_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light", "environment_perception": "An urban divided arterial runs under an elevated expressway, with two same-direction lanes, guardrails, smooth pavement, and moderate traffic moving steadily. A white minivan ahead in the ego lane is stopped for a red traffic light, so the ego car waits behind it. A white SUV in the right lane draws alongside and continues past, unaffected by the stop. Farther ahead in the right lane, a small white van proceeds away at low speed. Overhead signal heads show red for the ego's approach, and some fenced construction materials sit on the left shoulder without encroaching onto the roadway.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car because of a red traffic light. The driver should stop at the red light to avoid colliding with the stationary vehicle ahead."}
{"id": "train_02728", "split": "train", "clip_key": "2020-0207-101955_005553_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "005553"}, "frames": ["2020-0207-101955_005553_movie_t-3.jpg", "2020-0207-101955_005553_movie_t-2.jpg", "2020-0207-101955_005553_movie_t-1.jpg", "2020-0207-101955_005553_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way arterial with smooth dry pavement and red-painted curb lane is shown, separated by double white center lines; traffic is moderate and generally steady. A green canvas-covered truck is directly ahead in the ego lane and slows, so the ego car follows its pace. To the right beyond the center lines, an oncoming light truck approaches and passes straight through without conflict. In the left curb lane ahead, a dark van sits slow or stopped near the bus-lane area and may merge into the through lane.", "hazard_reasoning": "There is a green truck slowing in the ego lane, in front of the ego car. The leading truck's reduced speed can force sudden braking, so the driver should slow down to maintain a safe following distance."}
{"id": "train_02729", "split": "train", "clip_key": "2020-0204-150838_071289_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "071289"}, "frames": ["2020-0204-150838_071289_movie_t-3.jpg", "2020-0204-150838_071289_movie_t-2.jpg", "2020-0204-150838_071289_movie_t-1.jpg", "2020-0204-150838_071289_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An elevated urban expressway with three same-direction lanes and a concrete side barrier is visible, the pavement showing a long fresh asphalt strip; traffic is moderate to heavy and slow. A red container truck directly ahead in the ego lane slows because of congestion, constraining the ego vehicle's pace. To the left, a large heavy truck travels alongside while decelerating, limiting an easy move into that lane. Farther ahead across the middle lanes, a couple of box trucks continue braking, tightening the queue that the red truck follows. A roadside circular sign on the right posts 60.", "hazard_reasoning": "There is red truck slowing in the ego lane because of traffic congestion ahead on the road. You should slow down to maintain a safe following distance and avoid collision due to the reduced speed of the red truck in congestion."}
{"id": "train_02730", "split": "train", "clip_key": "2020-0220-151845_054787_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "054787"}, "frames": ["2020-0220-151845_054787_movie_t-3.jpg", "2020-0220-151845_054787_movie_t-2.jpg", "2020-0220-151845_054787_movie_t-1.jpg", "2020-0220-151845_054787_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs under an elevated expressway, bounded by a concrete barrier on the left, with smooth pavement and heavy, slow-moving traffic. A yellow-tarped red flatbed truck is directly ahead in the ego lane, slowing and creeping because of congestion ahead, and it controls the ego car's speed. To the right, a silver microvan in the adjacent lane advances slowly alongside the truck and may merge into the ego lane in the tight queue. Farther right, a teal minicar and other cars line up in the same direction, inching forward and maintaining the jam. Blue directional signs are visible ahead.", "hazard_reasoning": "There is a yellow and red truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance as the lead vehicle decelerates due to congestion."}
{"id": "train_02731", "split": "train", "clip_key": "titan_clip_680_000390_movie", "source": {"subset": "titan", "scenario": "clip_680", "frame": "000390"}, "frames": ["titan_clip_680_000390_movie_t-3.jpg", "titan_clip_680_000390_movie_t-2.jpg", "titan_clip_680_000390_movie_t-1.jpg", "titan_clip_680_000390_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way roadway and smooth pavement shows light vehicle traffic but heavy pedestrian activity. A pedestrian in all black pushing a blue cart crosses directly ahead at the zebra crossing toward the left side of the road, entering the ego vehicle's path. In the right foreground, two more pedestrians continue across the crosswalk toward the left, still partly in front of the ego lane. Farther ahead, a utility lift truck stands near the middle of the street with its boom raised, narrowing the passage. A clearly marked zebra crossing is visible.", "hazard_reasoning": "There is a pedestrian in front of the ego car, wearing all black and pushing a blue cart, crossing to the left side of the road. The pedestrian is moving directly into the vehicle's path and may not be clearly seen until close, so slowing down reduces the risk of collision and allows time to react."}
{"id": "train_02732", "split": "train", "clip_key": "2020-0131-103016_016252_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "016252"}, "frames": ["2020-0131-103016_016252_movie_t-3.jpg", "2020-0131-103016_016252_movie_t-2.jpg", "2020-0131-103016_016252_movie_t-1.jpg", "2020-0131-103016_016252_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "In a dense urban area, the ego car approaches a wide multi-lane intersection on smooth asphalt with three same-direction lanes and no median; traffic is heavy and bunches up at the light. A white van directly ahead in the ego lane is stopped for the red signal, holding the ego vehicle. To the left, a green taxi slightly ahead in the adjacent lane is stopped alongside, maintaining its lane. On the right, a red sedan in the right-turn-only lane creeps toward the stop line and waits to turn, remaining clear of the ego lane. Overhead signals display red for the approach and lane arrows mark the right lane as turn-only.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to maintain a safe distance and avoid colliding with the halted vehicle."}
{"id": "train_02733", "split": "train", "clip_key": "2020-0129-105040_084027_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "084027"}, "frames": ["2020-0129-105040_084027_movie_t-3.jpg", "2020-0129-105040_084027_movie_t-2.jpg", "2020-0129-105040_084027_movie_t-1.jpg", "2020-0129-105040_084027_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "be aware of cones", "environment_perception": "An urban backstreet with a single narrow two-way carriageway has dry, intact pavement and light traffic. Traffic cones line the right side of the lane, narrowing the path as the road runs straight past a fenced sports ground. A cyclist travels ahead near the right fence at low speed, staying close to the cones and reducing passing space for the ego vehicle. Far ahead in the opposing lane, an oncoming car approaches but remains on its side. A person lingers by the left storefront near some parked bicycles without entering the roadway. A round speed-limit sign is posted on a pole along the left frontage.", "hazard_reasoning": "There are traffic cones along the right side of the lane. Drivers should be aware that these cones indicate a temporary divider or work area, requiring them to adjust their position and speed to navigate safely."}
{"id": "train_02734", "split": "train", "clip_key": "2020-0127-132751_082717_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "082717"}, "frames": ["2020-0127-132751_082717_movie_t-3.jpg", "2020-0127-132751_082717_movie_t-2.jpg", "2020-0127-132751_082717_movie_t-1.jpg", "2020-0127-132751_082717_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with two lanes in the ego direction runs straight past mid-rise buildings, with a raised median and smooth dry pavement, and overall traffic is light. A green tarp-covered truck directly ahead in the ego lane slows for a red traffic light and thus constrains the ego car's pace. The oncoming carriageway to the right of the median appears mostly clear. A blue painted bicycle lane and some parked cars line the left side, and no obstacles are present in the roadway.", "hazard_reasoning": "There is a green truck slowing in front of the ego car, in the ego lane, because of a red traffic light. The driver should slow down to maintain a safe distance and avoid a collision due to the truck's sudden deceleration under the red signal."}
{"id": "train_02735", "split": "train", "clip_key": "2020-0207-151349_028381_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "028381"}, "frames": ["2020-0207-151349_028381_movie_t-3.jpg", "2020-0207-151349_028381_movie_t-2.jpg", "2020-0207-151349_028381_movie_t-1.jpg", "2020-0207-151349_028381_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three same-direction lanes runs between high-rise buildings, with a planted median and smooth pavement; traffic is light to moderate and flows steadily despite strong sun glare ahead. A white box truck travels straight ahead in the ego lane a short distance in front, moving through the junction under a green signal and effectively setting the ego car's pace. In the right adjacent lane, a white SUV slightly ahead continues straight at similar speed without encroaching. Farther ahead across the lanes, several cars proceed through the intersection with ample spacing.", "hazard_reasoning": "There is a white truck moving forward in the ego lane in front of the ego car, because of the green traffic light. The driver should be cautious of the truck ahead as it may obscure the view or change speed unexpectedly."}
{"id": "train_02736", "split": "train", "clip_key": "2020-0127-132751_104371_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "104371"}, "frames": ["2020-0127-132751_104371_movie_t-3.jpg", "2020-0127-132751_104371_movie_t-2.jpg", "2020-0127-132751_104371_movie_t-1.jpg", "2020-0127-132751_104371_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane in each direction runs ahead, marked by a solid yellow centerline; the pavement is dry and in fair condition, and overall traffic is light but briefly slows. The ego car follows a silver microvan in the left-hand lane that brakes and stops, constraining the ego vehicle's pace. A woman wearing a beige jacket and black pants steps off the right curb and jaywalks left across the ego lane in front of the ego car while holding a tote bag, prompting the stop. The oncoming lane to the right stays mostly clear. Storefronts and driveways line both sides, with a guardrail and parked bicycles on the right.", "hazard_reasoning": "There is a woman wearing a beige jacket and black pants, holding a tote bag, and jaywalking in front of the ego car, from the right side to the left side. The driver should stop immediately to avoid colliding with her."}
{"id": "train_02737", "split": "train", "clip_key": "2020-0226-101332_034895_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "034895"}, "frames": ["2020-0226-101332_034895_movie_t-3.jpg", "2020-0226-101332_034895_movie_t-2.jpg", "2020-0226-101332_034895_movie_t-1.jpg", "2020-0226-101332_034895_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane one-way road with red pavement curves right beneath an elevated expressway, bounded by guardrails and cones; the surface looks smooth and traffic is light to moderate. A white van ahead in the right lane continues through the bend at a steady pace, staying within its lane and setting the pace for the ego vehicle. Farther ahead in the left lane, a small kei truck proceeds through the same curve and remains relevant as it occupies the ego lane. Chevron boards line the right edge, a bicycle sharrow is painted in the left lane, and an overhead traffic signal and a speed-limit sign are visible near the upcoming junction.", "hazard_reasoning": "No immediate hazards are present in this clear urban driving environment, so no warning is necessary."}
{"id": "train_02738", "split": "train", "clip_key": "2020-0225-102455_008999_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "008999"}, "frames": ["2020-0225-102455_008999_movie_t-3.jpg", "2020-0225-102455_008999_movie_t-2.jpg", "2020-0225-102455_008999_movie_t-1.jpg", "2020-0225-102455_008999_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with no median and smooth pavement shows moderate, slow-moving traffic. The ego vehicle proceeds in the left-hand lane with oncoming traffic to the right. Directly ahead, a gray dump truck in the ego lane slows to a crawl because of congestion ahead, constraining the ego vehicle's pace. To the left of the truck, a dark sedan slightly behind travels parallel in the adjacent same-direction lane at similar speed, limiting an immediate merge left. In the oncoming lane to the right, a silver sedan approaches steadily, remaining separated and not interacting with the ego lane.", "hazard_reasoning": "There is a gray truck slowing down in the ego lane because of traffic congestion ahead. The driver should reduce speed to maintain a safe following distance and avoid a rear-end collision with the slowing vehicle."}
{"id": "train_02739", "split": "train", "clip_key": "2020-0203-154554_027247_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "027247"}, "frames": ["2020-0203-154554_027247_movie_t-3.jpg", "2020-0203-154554_027247_movie_t-2.jpg", "2020-0203-154554_027247_movie_t-1.jpg", "2020-0203-154554_027247_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement and no median carries heavy, slow traffic toward a junction beneath an elevated roadway. A white semi-truck with a flatbed trailer is directly ahead in the ego lane and slows because of congestion ahead, constraining the ego car's pace. To the left, a black minivan alongside in the adjacent lane creeps forward in parallel, limiting space for a lane change. Ahead to the right, a small white van in the rightmost lane inches forward and could turn at the junction, keeping close to the ego lane. The rightmost lane shows right-turn-only markings that explain the queuing on that side.", "hazard_reasoning": "There is a white semi-truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid potential collisions in congested traffic."}
{"id": "train_02740", "split": "train", "clip_key": "2020-0221-115122_019637_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "019637"}, "frames": ["2020-0221-115122_019637_movie_t-3.jpg", "2020-0221-115122_019637_movie_t-2.jpg", "2020-0221-115122_019637_movie_t-1.jpg", "2020-0221-115122_019637_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield to merging vehicle", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway with a guardrail on the right; pavement looks smooth and traffic is heavy and slow in queues. Slightly ahead on the left, a white sedan changes from the left lane into the ego-vehicle's lane, merging into a small gap and constraining the ego car's pace. Directly ahead, a dark taxi in the ego lane creeps forward in stop-and-go, setting the speed of the line. In the right lane, a light blue hatchback travels alongside and then edges ahead, reducing space for lane changes.", "hazard_reasoning": "There's a white sedan changing lanes from the left lane to the ego-car lane. The merging sedan may collide with the ego-vehicle if the driver does not yield promptly."}
{"id": "train_02741", "split": "train", "clip_key": "titan_clip_1059_000456_movie", "source": {"subset": "titan", "scenario": "clip_1059", "frame": "000456"}, "frames": ["titan_clip_1059_000456_movie_t-3.jpg", "titan_clip_1059_000456_movie_t-2.jpg", "titan_clip_1059_000456_movie_t-1.jpg", "titan_clip_1059_000456_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single two-way lane and no median has worn but intact pavement and light, slow motor traffic. Ahead on the left edge, a cyclist wearing a yellow shirt rides away from the ego vehicle along the curb, occupying the ego lane and constraining speed. On the right by the storefront, a person with a handcart stands close to the roadway with the cart slightly in the lane, narrowing the passage. Farther ahead near the center, another pedestrian walks away within the travel lane in the same direction as the ego vehicle, further reducing available space.", "hazard_reasoning": "There is a cyclist wearing a yellow shirt, cycling on the left side of the road, away from the ego car. The cyclist's proximity to the driving lane means the driver should slow down to maintain a safe distance and be prepared for unpredictable movements."}
{"id": "train_02742", "split": "train", "clip_key": "titan_clip_533_000498_movie", "source": {"subset": "titan", "scenario": "clip_533", "frame": "000498"}, "frames": ["titan_clip_533_000498_movie_t-3.jpg", "titan_clip_533_000498_movie_t-2.jpg", "titan_clip_533_000498_movie_t-1.jpg", "titan_clip_533_000498_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban two-way street with no centerline runs between mid-rise buildings, the concrete surface slightly worn; traffic is light and the ego vehicle moves slowly. On the left just ahead, a blue truck is parked for unloading and workers stand on and around it, leaving part of the ego lane blocked. Directly in front of it another small flatbed truck remains stopped with a man on the bed handling cargo, further narrowing the passage. On the right by the storefronts, several pedestrians walk along the curb and one steps toward the roadway near the trucks, potentially entering the ego path while we pass. The road bends gently right past the trucks, reducing forward visibility.", "hazard_reasoning": "There is a blue truck parked on the left side of the road because it is being unloaded. The parked truck obstructs the curbside view, so the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_02743", "split": "train", "clip_key": "titan_clip_163_000252_movie", "source": {"subset": "titan", "scenario": "clip_163", "frame": "000252"}, "frames": ["titan_clip_163_000252_movie_t-3.jpg", "titan_clip_163_000252_movie_t-2.jpg", "titan_clip_163_000252_movie_t-1.jpg", "titan_clip_163_000252_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked truck ahead", "environment_perception": "A narrow urban two-way street with no median and smooth pavement, the ego vehicle proceeds in the left lane with light traffic and no visible oncoming cars. The lane is partially constrained by parked vehicles. Ahead on the left, a white box truck is parked for unloading, narrowing the ego lane and slowing the approach. Just before it, a white sedan is stopped along the left curb within a marked bay, adding to the pinch point. On the right sidewalk, a pedestrian stands near a building driveway, stationary and close to the curb where he could enter the roadway.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. The parked truck may force vehicles to change trajectory or slow unexpectedly, so drivers should be aware of this potential obstruction."}
{"id": "train_02744", "split": "train", "clip_key": "titan_clip_900_000084_movie", "source": {"subset": "titan", "scenario": "clip_900", "frame": "000084"}, "frames": ["titan_clip_900_000084_movie_t-3.jpg", "titan_clip_900_000084_movie_t-2.jpg", "titan_clip_900_000084_movie_t-1.jpg", "titan_clip_900_000084_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with brick paving and manholes forms a narrow one-lane roadway with no median, and vehicle traffic is light and slow. A pedestrian wearing a black T-shirt, blue pants, and a cap walks away from the ego car in the center of the lane ahead, occupying the path and constraining speed. A white van is stopped along the left edge ahead, further narrowing the space beside the pedestrian. Several people move along the right sidewalk near shopfronts, with a few standing at the curb.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, blue pants and a cap, walking away from the ego car in front of the ego car. The pedestrian could unexpectedly step into the lane ahead, so the driver should slow down to maintain a safe distance."}
{"id": "train_02745", "split": "train", "clip_key": "2020-0203-114632_061764_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "061764"}, "frames": ["2020-0203-114632_061764_movie_t-3.jpg", "2020-0203-114632_061764_movie_t-2.jpg", "2020-0203-114632_061764_movie_t-1.jpg", "2020-0203-114632_061764_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban signalized intersection with multiple lanes and wide zebra crosswalks is ahead, the pavement smooth and traffic moderate with some vehicles queued on the far side. The ego vehicle is stopped at the near crosswalk. A pedestrian in a red jacket with a red backpack, holding a phone, crosses from right to left directly in front in the marked crosswalk, occupying the ego path and controlling the pace. Farther left, two other pedestrians proceed across the perpendicular crosswalk without entering the ego lane. At the near left corner, a small white delivery truck waits by the curb at the line. Overhead traffic signals govern the junction.", "hazard_reasoning": "There is a male pedestrian wearing a red jacket, a red backpack and holding a cell phone, who is crossing the street from right to left in a marked crosswalk in front of the ego-car. The driver must stop to yield to the pedestrian crossing in the crosswalk to avoid a collision."}
{"id": "train_02746", "split": "train", "clip_key": "titan_clip_801_000306_movie", "source": {"subset": "titan", "scenario": "clip_801", "frame": "000306"}, "frames": ["titan_clip_801_000306_movie_t-3.jpg", "titan_clip_801_000306_movie_t-2.jpg", "titan_clip_801_000306_movie_t-1.jpg", "titan_clip_801_000306_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrian.", "environment_perception": "A narrow urban two-way street with shops lines both sides, the pavement looks smooth, and traffic is light; the ego vehicle proceeds along the left side with no marked centerline. A pedestrian in a white T-shirt and gray pants crosses ahead from the right toward the left directly in front of the ego car, constraining its pace. Another pedestrian farther ahead near the left edge walks away along the roadway in the same lane. No moving vehicles approach or lead, while a parked car at the left curb and rows of parked bicycles and shop signboards on the right slightly narrow the passage.", "hazard_reasoning": "There's a pedestrian wearing a white t-shirt, wearing gray pants, crossing the street, in front of the ego car, to the left side. The driver should yield because the pedestrian is entering the vehicle's path and may cross unexpectedly."}
{"id": "train_02747", "split": "train", "clip_key": "2020-0218-103119_002846_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002846"}, "frames": ["2020-0218-103119_002846_movie_t-3.jpg", "2020-0218-103119_002846_movie_t-2.jpg", "2020-0218-103119_002846_movie_t-1.jpg", "2020-0218-103119_002846_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the silver van", "environment_perception": "An urban multilane road with a painted median and smooth pavement runs between mid-rise buildings, and traffic is light and flowing. The ego vehicle continues in the left lane while a silver van ahead in the same lane travels steadily, lightly setting the pace. To the right, another silver van in the right lane drives toward the ego car across the intersection and may enter the ego lane. Farther ahead, oncoming cars continue straight in their lanes through the junction. Overhead traffic signals are present at the intersection, with no unusual controls or hazards visible.", "hazard_reasoning": "There is a silver van driving in the right lane toward the ego car because of a green traffic light. The driver should be aware that the van is approaching the intersection on a green signal and may cross your path, requiring attention."}
{"id": "train_02748", "split": "train", "clip_key": "2020-0212-102546_054775_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "054775"}, "frames": ["2020-0212-102546_054775_movie_t-3.jpg", "2020-0212-102546_054775_movie_t-2.jpg", "2020-0212-102546_054775_movie_t-1.jpg", "2020-0212-102546_054775_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the vehicle ahead", "environment_perception": "An urban street with two lanes in the same direction has smooth pavement and no median, and traffic moves slowly in a short queue. A silver van stopped directly ahead in the ego lane waits because of congestion and controls the ego vehicle's pace. In the adjacent right lane slightly farther ahead, a small white van creeps forward with the line of traffic and remains parallel to the ego path. Farther ahead, several cars in both lanes form a dense line. A yield sign stands on a side street to the left.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. Stop to avoid rear-ending the halted vehicle and account for congestion."}
{"id": "train_02749", "split": "train", "clip_key": "2020-0205-103411_000341_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "000341"}, "frames": ["2020-0205-103411_000341_movie_t-3.jpg", "2020-0205-103411_000341_movie_t-2.jpg", "2020-0205-103411_000341_movie_t-1.jpg", "2020-0205-103411_000341_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with good pavement curves right beside a construction site, with two same-direction lanes and no median; traffic is heavy and moving slowly. A black sedan directly ahead in the ego lane is stopped due to queuing traffic, holding the ego vehicle. To its right, a red taxi in the adjacent lane edges forward near the zebra crossing and narrows the gap around the curve. Pedestrians walk along the left sidewalk behind guardrails, with a few near the crosswalk who may step into the roadway. A blue pedestrian crossing sign and orange cones mark the work area at the fence.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego car lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid colliding with the halted vehicle."}
{"id": "train_02750", "split": "train", "clip_key": "2020-0217-110854_066005_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "066005"}, "frames": ["2020-0217-110854_066005_movie_t-3.jpg", "2020-0217-110854_066005_movie_t-2.jpg", "2020-0217-110854_066005_movie_t-1.jpg", "2020-0217-110854_066005_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction and no physical median has smooth pavement and moderate traffic that thickens near a signalized intersection ahead. A gray hatchback directly ahead in the ego lane slows because traffic is bunching ahead, so it governs the ego vehicle's speed. In the adjacent left same-direction lane, a tarp-covered truck slightly ahead rolls slowly, keeping position and limiting an easy overtake. Farther ahead, several vans and cars queue in both same-direction lanes as they approach the junction, continuing the compression. On the opposite side of the road, oncoming cars travel steadily in their lanes.", "hazard_reasoning": "There is a gray hatchback slowing down in the ego lane, because of traffic congestion ahead. Driver should slow down to maintain a safe following distance due to the congested traffic ahead."}
{"id": "train_02751", "split": "train", "clip_key": "titan_clip_670_000264_movie", "source": {"subset": "titan", "scenario": "clip_670", "frame": "000264"}, "frames": ["titan_clip_670_000264_movie_t-3.jpg", "titan_clip_670_000264_movie_t-2.jpg", "titan_clip_670_000264_movie_t-1.jpg", "titan_clip_670_000264_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway and no median has smooth pavement and light traffic as the ego-vehicle proceeds in the left lane toward a zebra crossing. A cyclist ahead slightly left rides in the ego lane and then angles toward the left curb near the crossing, temporarily setting the pace. A pedestrian on the left sidewalk by construction fencing stands close to the curb beside the crosswalk and may enter the lane. Another pedestrian on the right sidewalk walks away along the buildings. A blue triangular crossing sign hangs above the road, and no oncoming vehicles are visible.", "hazard_reasoning": "No potential hazards are visible as the road is clear of vehicles and obstacles. The traffic control signs are normal and both pedestrian and cyclist are at a distance, so the driver can proceed without additional caution."}
{"id": "train_02752", "split": "train", "clip_key": "titan_clip_68_000084_movie", "source": {"subset": "titan", "scenario": "clip_68", "frame": "000084"}, "frames": ["titan_clip_68_000084_movie_t-3.jpg", "titan_clip_68_000084_movie_t-2.jpg", "titan_clip_68_000084_movie_t-1.jpg", "titan_clip_68_000084_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around parked vehicle", "environment_perception": "A narrow urban street with smooth pavement and building fronts lines both sides, marked by edge lines and no center divider; traffic is light and steady. Ahead, a silver hatchback is parked on the left side of the road, narrowing the usable lane for the ego vehicle. On the right edge near the camera, a man walks along the roadway toward the ego vehicle, keeping close to the lane and potentially affecting its path. Bicycles are parked along the right sidewalk, and no signals or notable signs are visible.", "hazard_reasoning": "There is a silver hatchback parked on the left side of the road. It narrows the lane and requires the driver to manoeuvre carefully around it to avoid collision."}
{"id": "train_02753", "split": "train", "clip_key": "2020-0127-132751_104545_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "104545"}, "frames": ["2020-0127-132751_104545_movie_t-3.jpg", "2020-0127-132751_104545_movie_t-2.jpg", "2020-0127-132751_104545_movie_t-1.jpg", "2020-0127-132751_104545_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban commercial street with one lane per direction and a solid yellow centerline runs ahead on dry, slightly worn asphalt; overall flow is light but the ego lane is momentarily blocked. A gray van directly ahead in the ego lane is stopped with brake lights illuminated, holding the ego car as stated. A dark sedan approaches in the opposite lane and continues past, preventing any immediate move around the van. A pedestrian on the right sidewalk near a guardrail waits by a shop entrance without stepping into the road. Storefront driveways line both sides, and no traffic signals are visible.", "hazard_reasoning": "There is a gray van stopped in the ego lane, in front of the ego car. The driver should stop to avoid colliding with the halted van ahead."}
{"id": "train_02754", "split": "train", "clip_key": "2020-0129-144857_065983_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "065983"}, "frames": ["2020-0129-144857_065983_movie_t-3.jpg", "2020-0129-144857_065983_movie_t-2.jpg", "2020-0129-144857_065983_movie_t-1.jpg", "2020-0129-144857_065983_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban two-lane roadway carries heavy stop-and-go traffic on dry pavement, with a guardrail to the right and a wall to the left; movement remains mostly halted. A white sedan directly ahead in the ego lane is stopped, holding the ego vehicle in place. In the adjacent left lane, a blue flatbed truck creeps forward alongside, limiting any opportunity to change lanes. On a separated ramp to the right, a white van moves slowly upward, remaining outside the ego path. Farther ahead, a queue of trucks and vans packs the lanes, forming a bottleneck that sustains the jam.", "hazard_reasoning": "There is a white sedan stopped in the ego lane. The sedan's unexpected stop requires you to halt to prevent a rear-end collision."}
{"id": "train_02755", "split": "train", "clip_key": "2020-0204-150838_074459_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "074459"}, "frames": ["2020-0204-150838_074459_movie_t-3.jpg", "2020-0204-150838_074459_movie_t-2.jpg", "2020-0204-150838_074459_movie_t-1.jpg", "2020-0204-150838_074459_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with two same-direction lanes runs straight between a tall sound wall on the left and a concrete barrier on the right, with dry, smooth pavement and light traffic. A black truck with a green tarp drives ahead in the ego lane, steadily moving away and loosely setting the ego vehicle's pace. The adjacent right lane stays empty, and no merging or oncoming traffic appears.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02756", "split": "train", "clip_key": "titan_clip_1087_000510_movie", "source": {"subset": "titan", "scenario": "clip_1087", "frame": "000510"}, "frames": ["titan_clip_1087_000510_movie_t-3.jpg", "titan_clip_1087_000510_movie_t-2.jpg", "titan_clip_1087_000510_movie_t-1.jpg", "titan_clip_1087_000510_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian walking toward you", "environment_perception": "An urban side street meets another narrow street at a small intersection; the single unmarked two-way lane has no divider, the pavement is dry, and traffic is light with no moving vehicles. On the right corner a woman wearing a white shirt and gray pants walks toward the ego car from the sidewalk, approaching the curb and potentially entering the lane. No other active road users are visible. Parked bicycles sit under the building on the right, and close buildings at the corners create a partial blind right-side view.", "hazard_reasoning": "There is a woman wearing a white shirt and gray pants, and walking towards the ego car, on the right side of the intersection. She is entering the roadway at the intersection and may step into the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_02757", "split": "train", "clip_key": "2020-0127-132751_082859_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "082859"}, "frames": ["2020-0127-132751_082859_movie_t-3.jpg", "2020-0127-132751_082859_movie_t-2.jpg", "2020-0127-132751_082859_movie_t-1.jpg", "2020-0127-132751_082859_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes each way and a raised concrete median has smooth pavement and light, steady traffic. A black truck covered by a green tarp travels ahead in the ego lane, moving away at a steady pace and loosely setting the ego vehicle's following distance. A few oncoming cars proceed toward us on the opposite carriageway beyond the median, with no interaction. No pedestrians, cyclists, or parked vehicles are evident, and no hazards stand out.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02758", "split": "train", "clip_key": "titan_clip_202_000588_movie", "source": {"subset": "titan", "scenario": "clip_202", "frame": "000588"}, "frames": ["titan_clip_202_000588_movie_t-3.jpg", "titan_clip_202_000588_movie_t-2.jpg", "titan_clip_202_000588_movie_t-1.jpg", "titan_clip_202_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully", "environment_perception": "A narrow urban two-way street with no median and smooth pavement runs between low midrise buildings, and traffic is light as the ego vehicle approaches a crosswalked intersection. Ahead on the left edge, a white delivery van is stopped partly in the ego lane, narrowing the path and constraining the approach. Next to it, a pedestrian in a black shirt walks toward the ego vehicle as he opens the van's door and may step into the lane. A red triangular stop sign is posted at the intersection, with a stop marking before the zebra crossing.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and walking on the left side of the road, toward the ego car, because he is opening a door of a white van. The pedestrian opening the van door may step into the vehicle's path, so the driver should manoeuvre carefully to avoid a collision."}
{"id": "train_02759", "split": "train", "clip_key": "2020-0218-103119_055864_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "055864"}, "frames": ["2020-0218-103119_055864_movie_t-3.jpg", "2020-0218-103119_055864_movie_t-2.jpg", "2020-0218-103119_055864_movie_t-1.jpg", "2020-0218-103119_055864_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road with dry, smooth pavement runs under an elevated structure on the right, and traffic moves slowly. A silver box truck directly ahead in the ego lane accelerates, briefly opening a gap while still setting the ego vehicle's pace. Another box truck travels in the adjacent right lane alongside and then slightly ahead, remaining within its lane and close to the ego vehicle. No oncoming traffic or signals are visible, and there are no obstacles beyond the tight space created by the two trucks.", "hazard_reasoning": "There is a silver truck accelerating in front of the ego car, in the ego lane. The accelerating truck and its size reduce forward visibility, so the driver should start moving to maintain safe distance and awareness."}
{"id": "train_02760", "split": "train", "clip_key": "2020-0212-150403_016215_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "016215"}, "frames": ["2020-0212-150403_016215_movie_t-3.jpg", "2020-0212-150403_016215_movie_t-2.jpg", "2020-0212-150403_016215_movie_t-1.jpg", "2020-0212-150403_016215_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction and a painted median runs between mid-rise buildings, the pavement is smooth and traffic is light. A white hatchback directly ahead in the ego lane slows, constraining the ego car's pace as described. A small car farther ahead in the adjacent right same-direction lane continues straight at steady speed without merging. Oncoming cars in the opposite lanes proceed steadily beyond the median and remain separated from the ego lane. Metal railings line the sidewalks, and no pedestrians or cyclists appear near the roadway.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car, in the ego lane. Slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_02761", "split": "train", "clip_key": "titan_clip_379_000246_movie", "source": {"subset": "titan", "scenario": "clip_379", "frame": "000246"}, "frames": ["titan_clip_379_000246_movie_t-3.jpg", "titan_clip_379_000246_movie_t-2.jpg", "titan_clip_379_000246_movie_t-1.jpg", "titan_clip_379_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "An urban side street with interlocking brick pavement and no centerline runs straight ahead, effectively a single narrow lane with light traffic and several parked vehicles along the sides. The ego vehicle moves slowly. A pedestrian in a blue T-shirt and black shorts carrying a backpack crosses directly ahead from left to right in front of the car, so the ego yields. On the left edge by a parking entrance, another person walks near the curb without entering the roadway. A white sports car is parked at the left driveway, narrowing the passage. A convex mirror on the left and a no-parking sign on the right are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt and black shorts, carrying a backpack, and crossing the street in front of the ego car, from the left to the right side. The driver should yield to the pedestrian to avoid a collision as they are entering the vehicle's path."}
{"id": "train_02762", "split": "train", "clip_key": "2020-0217-110854_035036_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "035036"}, "frames": ["2020-0217-110854_035036_movie_t-3.jpg", "2020-0217-110854_035036_movie_t-2.jpg", "2020-0217-110854_035036_movie_t-1.jpg", "2020-0217-110854_035036_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy, stop-and-go traffic; three same-direction lanes are visible and there is no clear median. Immediately ahead, a gray hatchback is stopped in the ego lane because of congestion ahead, directly setting the pace for the ego vehicle. On the right, a large white coach bus in the adjacent lane creeps forward beside the ego car, staying close to the lane line and limiting lateral space. On the left, a queue of cars in the outer lane inches toward the next junction, making merging difficult. An overhead sign points to a left turn at the upcoming intersection.", "hazard_reasoning": "There is a gray hatchback stopped in the ego lane because of traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle in the lane."}
{"id": "train_02763", "split": "train", "clip_key": "titan_clip_354_000384_movie", "source": {"subset": "titan", "scenario": "clip_354", "frame": "000384"}, "frames": ["titan_clip_354_000384_movie_t-3.jpg", "titan_clip_354_000384_movie_t-2.jpg", "titan_clip_354_000384_movie_t-1.jpg", "titan_clip_354_000384_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for the pedestrian crossing", "environment_perception": "An urban shopping street with a narrow single-lane roadway paved in interlocking bricks, no divider or centerline, and very light vehicle traffic; the view is from an alley entrance between dense storefronts. A pedestrian wearing a black tunic crosses from the left directly in front of the vehicle toward the right, occupying the travel path. Ahead-left, another pedestrian walks away along the shopfront, keeping to the side and not affecting the lane. At the right edge by a convenience store, a man stands near the curb with a phone, waiting beside the path. An orange traffic cone and shop displays line the left edge, slightly narrowing the approach.", "hazard_reasoning": "A pedestrian wearing a black tunic is crossing from the left side of the road to the right. Therefore, the driver must stop because the pedestrian is actively crossing ahead and could enter the vehicle's path unexpectedly."}
{"id": "train_02764", "split": "train", "clip_key": "2020-0131-135401_086783_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "086783"}, "frames": ["2020-0131-135401_086783_movie_t-3.jpg", "2020-0131-135401_086783_movie_t-2.jpg", "2020-0131-135401_086783_movie_t-1.jpg", "2020-0131-135401_086783_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction and a metal median barrier has smooth pavement and slow, bunched traffic. A white van ahead in the ego lane slows due to congestion ahead, constraining the ego car's pace. To the left, a silver van travels slowly in the adjacent lane, keeping parallel and limiting any lane change gap. Farther ahead in the left lane, a box truck moves slowly and contributes to the queue forming in front. Oncoming traffic flows to the right beyond the median without interacting.", "hazard_reasoning": "There is a white van slowing down in the ego lane because of traffic congestion ahead. The van's deceleration indicates queued traffic, so the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_02765", "split": "train", "clip_key": "titan_clip_699_000336_movie", "source": {"subset": "titan", "scenario": "clip_699", "frame": "000336"}, "frames": ["titan_clip_699_000336_movie_t-3.jpg", "titan_clip_699_000336_movie_t-2.jpg", "titan_clip_699_000336_movie_t-1.jpg", "titan_clip_699_000336_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban back street with a single very narrow one-way lane and no divider runs between storefronts; the asphalt looks sound and there is no vehicular traffic, while pedestrian flow is heavy. Ahead on the left, a tall man in a white T-shirt and green shorts carrying a handbag walks along the edge of the lane because the road is narrow, partially occupying the travel path. Farther ahead in the center, a woman dressed in dark clothing walks away within the lane, directly limiting the ego-vehicle's speed. On the right, three pedestrians including a child walk toward the camera along the curb within the roadway, leaving limited clearance as they pass. A temporary construction wall lines the left side, further constricting the passage.", "hazard_reasoning": "There is a tall man wearing a white t-shirt and green shorts carrying a handbag walking on the left side of the road because the road is narrow. The pedestrian's position encroaches onto the travel lane, posing a collision risk if the driver continues at speed, thus requiring a reduction in speed."}
{"id": "train_02766", "split": "train", "clip_key": "titan_clip_1157_000108_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1157_000108_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1157_000108_movie_t-3_augB1.jpg", "titan_clip_1157_000108_movie_t-2_augB1.jpg", "titan_clip_1157_000108_movie_t-1_augB1.jpg", "titan_clip_1157_000108_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one lane each direction and no median runs between midrise buildings; the asphalt looks smooth and slightly damp, and traffic is light as a curbside work zone narrows the left lane. Ahead on the left side of the road, a pedestrian in a blue shirt and hat faces the ego vehicle and signals while directing traffic, standing near the path where the car would pass. Farther ahead at the left curb, a construction truck is stopped beside barricades and signage, occupying part of the ego lane and limiting the available width. In the opposite lane, a white car approaches through the open gap past the work area, influencing when the ego vehicle can proceed. Cones and temporary barriers line the work zone.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and hat, standing on the left side of the road, facing the ego car, because they are directing traffic. As the pedestrian is actively directing vehicles in the construction zone, the driver should manoeuvre carefully to avoid any collision."}
{"id": "train_02767", "split": "train", "clip_key": "titan_clip_1032_000108_movie", "source": {"subset": "titan", "scenario": "clip_1032", "frame": "000108"}, "frames": ["titan_clip_1032_000108_movie_t-3.jpg", "titan_clip_1032_000108_movie_t-2.jpg", "titan_clip_1032_000108_movie_t-1.jpg", "titan_clip_1032_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian on road", "environment_perception": "An urban residential street in Japan appears as a narrow two-way road with no centerline, bordered by green railings and small sidewalks; the asphalt is smooth and dry, and traffic is light with no vehicles visible. On the left side near the ego lane, a pedestrian in a beige T-shirt walks toward the camera in the roadway because a parked bicycle blocks the sidewalk, potentially edging into the ego path. Farther ahead along the same left edge, another pedestrian moves away from the camera beside the fence and remains out of the lane. A green school-zone crossing sign and a convex mirror stand on the right. The parked bicycle and constrained left margin create a minor roadside hazard.", "hazard_reasoning": "There is a pedestrian wearing a beige T-shirt and walking on the left side of the road, towards the ego car, because of the parked bicycle blocking the sidewalk. The pedestrian may move into the vehicle's path to bypass the obstruction, so drivers should be aware of her presence near the roadway."}
{"id": "train_02768", "split": "train", "clip_key": "titan_clip_118_000348_movie", "source": {"subset": "titan", "scenario": "clip_118", "frame": "000348"}, "frames": ["titan_clip_118_000348_movie_t-3.jpg", "titan_clip_118_000348_movie_t-2.jpg", "titan_clip_118_000348_movie_t-1.jpg", "titan_clip_118_000348_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around parked truck", "environment_perception": "An urban narrow two-way street runs between tall buildings, with no median and smooth pavement, and traffic remains light as the ego vehicle continues in the left lane. On the right, a pink truck is parked at the curb near midblock, stationary and occupying part of the right-side lane, which may constrain any oncoming traffic but does not block the ego path. No other moving vehicles or pedestrians are close. Bicycles are parked along both sidewalks, tightening the available roadside space.", "hazard_reasoning": "There is a pink truck parked on the right side of the road. The driver should manoeuvre carefully around the parked truck to avoid collision and maintain a safe lane position."}
{"id": "train_02769", "split": "train", "clip_key": "2020-0213-143552_029254_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_029254_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_029254_movie_t-3_augB1.jpg", "2020-0213-143552_029254_movie_t-2_augB1.jpg", "2020-0213-143552_029254_movie_t-1_augB1.jpg", "2020-0213-143552_029254_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrians crossing ahead", "environment_perception": "A narrow urban alley runs between tall buildings, effectively a single lane with no divider, dry pavement, and very light, slow traffic. Space is tight due to parked vehicles and roadside cones. Ahead in the center of the road, a group of pedestrians wearing black, white, and purple shirts walks toward the ego-vehicle, occupying the lane and controlling the pace. A small boxy van is parked along the left curb near them with its nose slightly in the lane, further narrowing the passage. On the right edge ahead, a person stands with a bicycle beside a storefront, stationary but close to the travel path and limiting clearance. Bright orange cones and a roped area line the left side, creating an additional obstacle along the curb.", "hazard_reasoning": "There is a group of pedestrians wearing black, white, and purple shirts and walking towards the ego car, in the middle of the road. The pedestrians are crossing directly ahead, so the driver should yield to them to avoid an accident."}
{"id": "train_02770", "split": "train", "clip_key": "2020-0203-114632_089506_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "089506"}, "frames": ["2020-0203-114632_089506_movie_t-3.jpg", "2020-0203-114632_089506_movie_t-2.jpg", "2020-0203-114632_089506_movie_t-1.jpg", "2020-0203-114632_089506_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated structure with smooth pavement and no median; traffic in the same direction is stopped at an intersection for a red signal. A white hatchback directly ahead in the ego lane is stopped for the red light, holding the ego vehicle at the line. To the right, a large silver box truck in the adjacent lane is also stopped slightly ahead, running parallel and bordering the ego lane. To the left, a dark sedan in the left lane waits at the light in line with the hatchback. The overhead traffic signal shows red.", "hazard_reasoning": "There is a white hatchback that has stopped in the ego lane because of a red traffic light, in front of the ego car. The driver should stop to maintain a safe distance and avoid rear-ending the halted vehicle."}
{"id": "train_02771", "split": "train", "clip_key": "2020-0205-103411_108291_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "108291"}, "frames": ["2020-0205-103411_108291_movie_t-3.jpg", "2020-0205-103411_108291_movie_t-2.jpg", "2020-0205-103411_108291_movie_t-1.jpg", "2020-0205-103411_108291_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial in a left-hand-traffic setting leads to a signalized intersection, with smooth asphalt and painted medians separating directions; traffic is light to moderate. A white van directly ahead in the ego lane accelerates under the green light, pulling away and briefly setting the ego vehicle's pace. To the left, a red car and a dark minivan move slowly in the adjacent lane alongside the ego car and could merge near the junction. On the far right, oncoming cars continue through the intersection on the opposite carriageway. Overhead signals facing the ego direction are green, and the scene is bright with low sun glare but free of obstacles.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02772", "split": "train", "clip_key": "titan_clip_571_000324_movie", "source": {"subset": "titan", "scenario": "clip_571", "frame": "000324"}, "frames": ["titan_clip_571_000324_movie_t-3.jpg", "titan_clip_571_000324_movie_t-2.jpg", "titan_clip_571_000324_movie_t-1.jpg", "titan_clip_571_000324_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian crossing the road", "environment_perception": "A narrow urban two-way street with smooth asphalt and no median runs between low-rise buildings, and traffic is light. The ego vehicle moves straight along the left side toward a small intersection. A black car ahead in the same direction slows near mid-block, constraining the ego vehicle's pace. A pedestrian from the right side steps into the roadway and crosses toward the left across the ego lane ahead. A bicyclist on the left sidewalk approaches the corner slowly and may enter the crosswalk near the ego's path. A blue straight-ahead-only sign stands on the left, and a white van is parked along the left curb near the camera.", "hazard_reasoning": "There is a pedestrian on the right side of the road, crossing the street to the left side of the road. The driver should be cautious because the pedestrian may step into the vehicle's path as it approaches the crossing."}
{"id": "train_02773", "split": "train", "clip_key": "2020-0131-103016_016216_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "016216"}, "frames": ["2020-0131-103016_016216_movie_t-3.jpg", "2020-0131-103016_016216_movie_t-2.jpg", "2020-0131-103016_016216_movie_t-1.jpg", "2020-0131-103016_016216_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with three same-direction lanes and smooth pavement approaches a signalized intersection, and traffic is moderate with a short queue at the light. A white van waits directly ahead in the ego lane, stopped because the signal is red, holding the ego vehicle in place. In the lane to the left, a taxi and a small truck are queued just ahead, remaining stationary as they wait for the light and matching the ego car's halt. On the right, a dark sedan advances in the right-turn lane and slows near the stop line alongside the ego car without entering our lane. Overhead signals for our approach show red.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid rear-ending the halted van at the red light."}
{"id": "train_02774", "split": "train", "clip_key": "2020-0207-101955_060197_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "060197"}, "frames": ["2020-0207-101955_060197_movie_t-3.jpg", "2020-0207-101955_060197_movie_t-2.jpg", "2020-0207-101955_060197_movie_t-1.jpg", "2020-0207-101955_060197_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road with dry, well-marked pavement runs straight between mid-rise buildings, and a metal-railed divider lines the right edge; traffic is heavy and largely stopped. Immediately ahead in the ego lane, a white hatchback is stationary because of congestion and holds the ego vehicle. To the left, a blue truck and a white van wait side by side in the adjacent same-direction lane, also queued and limiting lane changes. Farther ahead in the ego lane, a tall green box truck remains stopped, contributing to the backup. Overhead lane-direction signs show straight arrows for the lanes ahead.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of traffic congestion ahead. The driver should stop promptly to avoid a collision with the halted vehicle in the congestion."}
{"id": "train_02775", "split": "train", "clip_key": "titan_clip_1374_000276_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1374_000276_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1374_000276_movie_t-3_augB1.jpg", "titan_clip_1374_000276_movie_t-2_augB1.jpg", "titan_clip_1374_000276_movie_t-1_augB1.jpg", "titan_clip_1374_000276_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian.", "environment_perception": "A narrow urban two-way street with smooth pavement and no centerline is clear of motor traffic, with no vehicles ahead or oncoming. A pedestrian wearing a white shirt, black pants, and a backpack crosses in front of the ego car from the right curb to the left, constraining the ego's pace. On the left edge, two men walk close to the lane near the ego path, which may bring them into the roadway. On the right side, two pedestrians walk along the curb toward the camera direction, occasionally looking toward the street and potentially stepping out after the crosser. No traffic signals or marked crosswalks are visible, and a row of parked bicycles lines the left side, tightening the margin.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a backpack, crossing the street in front of the ego car, from the right side of the street to the left side. The pedestrian is directly in the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_02776", "split": "train", "clip_key": "titan_clip_308_000606_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_308_000606_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_308_000606_movie_t-3_augB1.jpg", "titan_clip_308_000606_movie_t-2_augB1.jpg", "titan_clip_308_000606_movie_t-1_augB1.jpg", "titan_clip_308_000606_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "A narrow urban one-lane side street with interlocking brick pavement runs between buildings, with no divider and light traffic as the car approaches a small junction. A triangular yield sign is visible ahead. Ahead in the middle of the road, a pedestrian in a black dress carrying an umbrella and a handbag walks away from the ego vehicle, occupying the lane and constraining pace. Slightly farther ahead on the left, a man walks away beside a parked kei truck and may enter the travel path. Near the junction, two pedestrians move across from left to right. A kei truck and scooters park along the left, and potted plants crowd the right storefront, narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a black dress, carrying an umbrella and a handbag, and walking away from the ego car, in the middle of the road. This pedestrian in the middle of the lane may step into the path of the vehicle, so the driver should yield to avoid collision."}
{"id": "train_02777", "split": "train", "clip_key": "titan_clip_1077_000438_movie", "source": {"subset": "titan", "scenario": "clip_1077", "frame": "000438"}, "frames": ["titan_clip_1077_000438_movie_t-3.jpg", "titan_clip_1077_000438_movie_t-2.jpg", "titan_clip_1077_000438_movie_t-1.jpg", "titan_clip_1077_000438_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the cone", "environment_perception": "An urban uphill narrow two-way road without a center line runs past buildings; the asphalt is smooth with a few patches, and vehicle traffic is light while pedestrians share the lane. Several pedestrians ahead in the ego lane walk uphill in the same direction near the center of the roadway, slowing the approach because they occupy the path. On the right edge, a pedestrian near a storefront steps slightly into the roadway as they move toward the camera, potentially entering the ego lane. On the left, a crouching worker stays beside a construction area while a line of orange traffic cones, including one close to the ego vehicle, marks the edge and narrows the usable lane. A red A-frame sign stands at the right curb.", "hazard_reasoning": "There is a traffic cone on the left side of the road. The cone marks a work zone intrusion into the driving lane, so the driver must adjust their path to avoid striking it and maintain safe clearance."}
{"id": "train_02778", "split": "train", "clip_key": "2020-0127-132751_103174_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "103174"}, "frames": ["2020-0127-132751_103174_movie_t-3.jpg", "2020-0127-132751_103174_movie_t-2.jpg", "2020-0127-132751_103174_movie_t-1.jpg", "2020-0127-132751_103174_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban two-way road with one lane each direction and a solid yellow divider runs ahead, the pavement smooth and traffic light. A gray van ahead in the ego lane drives away from the ego car at a steady pace, effectively setting the ego vehicle's following speed. A pedestrian on the right sidewalk walks in the same direction, remaining clear of the carriageway. Several cars are parked off the left side in a small lot behind posts, stationary and not encroaching onto the lane. No oncoming vehicles appear during the clip.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02779", "split": "train", "clip_key": "titan_clip_623_000582_movie", "source": {"subset": "titan", "scenario": "clip_623", "frame": "000582"}, "frames": ["titan_clip_623_000582_movie_t-3.jpg", "titan_clip_623_000582_movie_t-2.jpg", "titan_clip_623_000582_movie_t-1.jpg", "titan_clip_623_000582_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down to give pedestrian more space.", "environment_perception": "An urban back street with stone block pavement and no marked centerline runs straight between buildings, with light traffic and several parked vehicles narrowing the single usable lane. The surface appears dry and intact, and there are no dividers or signals visible. A man in a blue shirt and black pants walks toward the ego along the left edge while pushing a rolling suitcase, moving around a parked vehicle and momentarily encroaching into the travel path. A white hatchback is parked on the right at the curb, its position tightening the gap ahead and constraining the ego vehicle's pace. A delivery truck stands on the left with its bed loaded with crates, further reducing clearance and leaving some cargo stacked near the roadway.", "hazard_reasoning": "There is a man wearing a blue shirt and black pants, pushing a piece of luggage, and walking on the left side of the road, toward the ego car, because of the parked vehicle. The pedestrian is stepping into the travel lane due to the obstruction, increasing collision risk, so the driver should slow down to maintain safety."}
{"id": "train_02780", "split": "train", "clip_key": "2020-0225-102455_074167_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "074167"}, "frames": ["2020-0225-102455_074167_movie_t-3.jpg", "2020-0225-102455_074167_movie_t-2.jpg", "2020-0225-102455_074167_movie_t-1.jpg", "2020-0225-102455_074167_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with dry, well-marked pavement carries heavy, stop-and-go traffic as the ego-car travels beneath a pedestrian overpass. A white van directly ahead in the ego lane slows because of congestion and constrains the ego-car's pace. In the right lane slightly ahead, a flatbed truck with a covered load crawls forward parallel to the van, tightening space to the right. On the left, a large white box truck alongside the ego-car edges ahead in the adjacent lane, limiting any leftward maneuver. A roadside no-parking sign is visible among downtown buildings while the queue creeps forward.", "hazard_reasoning": "There is a white van slowing down ahead of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_02781", "split": "train", "clip_key": "2020-0221-115122_011882_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0221-115122_011882_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0221-115122_011882_movie_t-3_augB1.jpg", "2020-0221-115122_011882_movie_t-2_augB1.jpg", "2020-0221-115122_011882_movie_t-1_augB1.jpg", "2020-0221-115122_011882_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs under an elevated structure with concrete walls on both sides; the pavement is dry and traffic is heavy and slow-moving. Ahead in the ego lane, a gray van slows with brake lights on as it follows a queue of vehicles, matching the congestion developing in front. To the right, a large white coach bus travels in the adjacent lane slightly ahead of the ego vehicle, creeping forward and keeping close to the orange lane line, which tightens lateral space but remains in its lane. Distant cars continue slowly under the flyover, and no unusual signs or hazards are visible beyond standard overhead direction boards.", "hazard_reasoning": "A gray van slowing down in the ego lane because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_02782", "split": "train", "clip_key": "titan_clip_1043_000138_movie", "source": {"subset": "titan", "scenario": "clip_1043", "frame": "000138"}, "frames": ["titan_clip_1043_000138_movie_t-3.jpg", "titan_clip_1043_000138_movie_t-2.jpg", "titan_clip_1043_000138_movie_t-1.jpg", "titan_clip_1043_000138_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban intersection where a narrow side street meets a multi-lane arterial divided by a tree-lined median; the asphalt looks smooth and traffic on the main road is moderate. A large group of pedestrians crosses directly ahead from right to left on the zebra crossing, occupying the ego lane and preventing entry to the arterial. Additional pedestrians wait near the opposite corner and along the sidewalk, ready to cross in the same direction. Cars on the arterial to the right pass straight through the junction from left to right beyond the crosswalk, not entering the ego path. An overhead signal facing the ego approach shows red during this scene.", "hazard_reasoning": "No caption provided; no hazards are present, so the driver can proceed safely under normal conditions."}
{"id": "train_02783", "split": "train", "clip_key": "titan_clip_1346_000408_movie", "source": {"subset": "titan", "scenario": "clip_1346", "frame": "000408"}, "frames": ["titan_clip_1346_000408_movie_t-3.jpg", "titan_clip_1346_000408_movie_t-2.jpg", "titan_clip_1346_000408_movie_t-1.jpg", "titan_clip_1346_000408_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked black truck ahead", "environment_perception": "An urban arterial with three lanes in the ego direction runs between midrise buildings, divided from oncoming traffic by a fenced median; the asphalt looks smooth and traffic is light. Ahead on the left lane, a black truck is stopped for unloading, occupying the curb lane and blocking it. In the center and right lanes farther ahead, several cars continue straight at a steady pace away from the camera, maintaining free flow. On the opposite side of the median, a few vehicles travel the other way without interaction. A pedestrian stands on the left sidewalk near the truck and remains off the roadway.", "hazard_reasoning": "There is a black truck parked in the left lane, because it is being unloaded. The parked truck may obstruct traffic flow or require the driver to change lanes, so the driver should be aware of its presence and potential effects on the path ahead."}
{"id": "train_02784", "split": "train", "clip_key": "titan_clip_1008_000144_movie", "source": {"subset": "titan", "scenario": "clip_1008", "frame": "000144"}, "frames": ["titan_clip_1008_000144_movie_t-3.jpg", "titan_clip_1008_000144_movie_t-2.jpg", "titan_clip_1008_000144_movie_t-1.jpg", "titan_clip_1008_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for pedestrians", "environment_perception": "In an urban commercial district, the camera travels on a narrow street without a centerline; the pavement looks smooth and traffic is light but slow. Ahead on the right side of the road, a pedestrian wearing a black skirt with white dots and carrying a handbag walks away from the ego vehicle along the edge of the travel way, remaining close to the vehicle's path. A white box truck is stopped on the left partly in the lane, reducing clearance. Farther ahead, a black car proceeds in the same direction beyond the truck. Storefront bollards line the right sidewalk, and no traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a black skirt with white dots, carrying a handbag, walking on the right side of the road, away from the ego car. Slow down to allow for any unexpected crossing near the intersection."}
{"id": "train_02785", "split": "train", "clip_key": "2020-0226-140503_083648_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "083648"}, "frames": ["2020-0226-140503_083648_movie_t-3.jpg", "2020-0226-140503_083648_movie_t-2.jpg", "2020-0226-140503_083648_movie_t-1.jpg", "2020-0226-140503_083648_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with multiple lanes in each direction runs between mid-rise buildings, the pavement smooth and the flow generally stop-and-go. Traffic is heavy, with a long queue stretching toward a distant signal. A white hatchback directly ahead in the ego lane is stopped because of congestion and holds the ego vehicle at a standstill. In the adjacent right lane, a gray sedan slightly ahead creeps forward alongside the queue. Farther ahead in the same direction, several vans and cars remain bunched and advance slowly, extending the line of stopped vehicles. On the far right, opposite-direction traffic moves in its own lanes with no interaction with the ego lane.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the halted vehicle."}
{"id": "train_02786", "split": "train", "clip_key": "2020-0210-101957_009179_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_009179_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_009179_movie_t-3_augB1.jpg", "2020-0210-101957_009179_movie_t-2_augB1.jpg", "2020-0210-101957_009179_movie_t-1_augB1.jpg", "2020-0210-101957_009179_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with double solid center lines curves slightly left between mid-rise buildings; pavement is fair and traffic appears moderate. A green sedan ahead in the ego lane slows because a bus is stopped at a bus stop just ahead, narrowing the lane. The white bus remains close to the left curb and partially blocks the ego lane, forcing following traffic to queue. An oncoming white flatbed truck approaches in its lane near the center line, constraining space and preventing the vehicles ahead from moving around the bus.", "hazard_reasoning": "There is a green sedan slowing in the ego lane, in front of the ego car, because a bus is stopped at a bus stop ahead. The green sedan's deceleration increases the risk of a rear-end collision, so the driver should slow down to maintain a safe following distance."}
{"id": "train_02787", "split": "train", "clip_key": "2020-0203-154554_004482_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "004482"}, "frames": ["2020-0203-154554_004482_movie_t-3.jpg", "2020-0203-154554_004482_movie_t-2.jpg", "2020-0203-154554_004482_movie_t-1.jpg", "2020-0203-154554_004482_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for crossing pedestrian", "environment_perception": "A wide urban two-way intersection with multiple lanes and zebra crosswalks comes into view; the pavement is dry and slightly worn, and vehicle traffic is light as the ego car waits at the stop line. Directly ahead in the ego lane, several pedestrians cross from the right toward the left on the crosswalk, blocking the path, including a pedestrian in a red jacket moving right to left. A few more pedestrians traverse from the left toward the central refuge island, still ahead of the vehicle and keeping it stationary. Signal masts and pedestrian lights are visible at the corners.", "hazard_reasoning": "There is a pedestrian wearing a red jacket, crossing the street at a pedestrian crossing, from the right side to the left side. The driver should stop because the pedestrian is actively crossing the roadway and poses a collision risk if not halted."}
{"id": "train_02788", "split": "train", "clip_key": "titan_clip_37_000150_movie", "source": {"subset": "titan", "scenario": "clip_37", "frame": "000150"}, "frames": ["titan_clip_37_000150_movie_t-3.jpg", "titan_clip_37_000150_movie_t-2.jpg", "titan_clip_37_000150_movie_t-1.jpg", "titan_clip_37_000150_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban shopping street with a single narrow two-way carriageway has no median or centerline and a brick-pattern surface; vehicle flow is light and slow amid heavy foot traffic. The ego car proceeds along the left side between close storefronts that confine the roadway. A silver van approaches ahead near the center of the road, rolling slowly toward the camera and constraining the ego vehicle on the narrow lane. On the left side a pedestrian in a suit walks toward the ego car along the curb and may edge into the lane. On the right foreground a man by the curb looks at a phone and drifts toward the roadway, presenting a near-side conflict with the ego path.", "hazard_reasoning": "There is a pedestrian wearing a suit and walking on the left side of the road, towards the ego car. The pedestrian could step into the vehicle's path, so the driver should be aware to prevent a potential collision.\\n"}
{"id": "train_02789", "split": "train", "clip_key": "2020-0220-102630_100044_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "100044"}, "frames": ["2020-0220-102630_100044_movie_t-3.jpg", "2020-0220-102630_100044_movie_t-2.jpg", "2020-0220-102630_100044_movie_t-1.jpg", "2020-0220-102630_100044_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down for traffic congestion ahead", "environment_perception": "An urban arterial with two lanes in the ego direction runs alongside a high concrete barrier, the pavement is dry, and traffic is moderate. Ahead in the ego lane, a small truck with a covered bed moves slowly and effectively sets the ego vehicle's pace. In the left lane slightly ahead, a white bus proceeds straight at a similar speed without encroaching on the ego lane. A pedestrian overpass spans the road, and a roadside sign posts a 50 speed limit.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The truck's reduced speed due to congestion means the driver should slow down to maintain a safe following distance and avoid collision."}
{"id": "train_02790", "split": "train", "clip_key": "2020-0204-103442_008939_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "008939"}, "frames": ["2020-0204-103442_008939_movie_t-3.jpg", "2020-0204-103442_008939_movie_t-2.jpg", "2020-0204-103442_008939_movie_t-1.jpg", "2020-0204-103442_008939_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban multi-lane divided arterial runs through tall buildings, with three same-direction lanes and a grass median with railings on the right; the pavement looks smooth and traffic is heavy ahead with slow movement. A black SUV directly ahead in the ego lane is stopped due to congestion, holding the ego-car's pace. A white utility pickup in the left lane travels slowly alongside and then slightly ahead while maintaining its lane. In the right lane by the median, a line of vans and trucks creeps forward, showing queues across lanes that contribute to the slowdown. No oncoming traffic is visible beyond the median.", "hazard_reasoning": "There is a black SUV stopped in front of the ego-car, because of traffic congestion ahead. Drivers should stop to avoid a rear-end collision under this situation."}
{"id": "train_02791", "split": "train", "clip_key": "2020-0228-150133_032539_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "032539"}, "frames": ["2020-0228-150133_032539_movie_t-3.jpg", "2020-0228-150133_032539_movie_t-2.jpg", "2020-0228-150133_032539_movie_t-1.jpg", "2020-0228-150133_032539_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs straight between mid-rise buildings, with two same-direction lanes and opposing traffic across double white lines; the pavement looks smooth and traffic is moderate but bunching ahead. A white wagon directly ahead in the ego lane rolls forward then slows, constrained by a short queue. Ahead to the left, a white hatchback slows in the adjacent lane as congestion builds, matching the noted risk. Farther ahead in the left lane, a small van proceeds at reduced speed behind other cars, limiting overtaking options. Oncoming vehicles move steadily on the far side of the divider, and a blank overhead gantry sign spans the roadway.", "hazard_reasoning": "There is a white hatchback slowing down in the ego lane, because of the traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_02792", "split": "train", "clip_key": "2020-0212-102546_017414_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "017414"}, "frames": ["2020-0212-102546_017414_movie_t-3.jpg", "2020-0212-102546_017414_movie_t-2.jpg", "2020-0212-102546_017414_movie_t-1.jpg", "2020-0212-102546_017414_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane in each direction curves gently right; the pavement looks smooth and traffic is moderately heavy and slow-moving. A white SUV-like vehicle directly ahead in the ego lane slows because of congestion further along the road, constraining our speed. A line of oncoming trucks and cars, including a green-tarped small truck, approaches in the opposing lane and passes close to the center line. Pedestrians stand and walk on the left sidewalk behind railings, remaining clear of the roadway.", "hazard_reasoning": "There is a white mid-SUV slowing in the ego lane because of traffic congestion ahead on the road. Slow down to maintain a safe distance and adapt to the congested traffic ahead."}
{"id": "train_02793", "split": "train", "clip_key": "titan_clip_87_000378_movie", "source": {"subset": "titan", "scenario": "clip_87", "frame": "000378"}, "frames": ["titan_clip_87_000378_movie_t-3.jpg", "titan_clip_87_000378_movie_t-2.jpg", "titan_clip_87_000378_movie_t-1.jpg", "titan_clip_87_000378_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban commercial street has one narrow lane in each direction with no median; the asphalt is smooth with several manhole covers, and traffic is light. A white van ahead in the ego lane travels slowly away. A pedestrian in a pink T-shirt crosses from the left on the marked crosswalk toward the ego vehicle, entering the ego lane. On the left corner, a person with a handcart moves along the sidewalk and stops at the curb by the crosswalk. Parked vehicles line the right side near storefronts.", "hazard_reasoning": "There is a pedestrian wearing a pink T-shirt, crossing the street in a pedestrian crossing, and walking towards the ego car. The pedestrian is entering the vehicle's path and could cause a collision if not given space, so the driver should slow down."}
{"id": "train_02794", "split": "train", "clip_key": "titan_clip_655_000480_movie", "source": {"subset": "titan", "scenario": "clip_655", "frame": "000480"}, "frames": ["titan_clip_655_000480_movie_t-3.jpg", "titan_clip_655_000480_movie_t-2.jpg", "titan_clip_655_000480_movie_t-1.jpg", "titan_clip_655_000480_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow", "environment_perception": "An urban shopping street with a narrow two-way carriageway lacking a centerline and flanked by green shoulders is shown; the pavement is smooth and vehicle traffic is light while pedestrian activity is dense. An oncoming silver van approaches ahead near the middle of the road, reducing the available space for opposing flow. On the left edge near the ego path, a group of pedestrians wearing white shirts and black pants and carrying handbags walks toward the camera along the roadway, edging into the lane. On the right side by the storefronts, several pedestrians walk and pause on the curb and steps, with a few stepping toward the carriageway and potentially entering the left-side lane. No salient signals are visible.", "hazard_reasoning": "There is a group of pedestrians, wearing white shirts and black pants, and carrying handbags, walking on the left side of a narrow lane, towards the ego car. Slow down because they might step into the roadway and require additional stopping distance."}
{"id": "train_02795", "split": "train", "clip_key": "2020-0217-110854_071916_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "071916"}, "frames": ["2020-0217-110854_071916_movie_t-3.jpg", "2020-0217-110854_071916_movie_t-2.jpg", "2020-0217-110854_071916_movie_t-1.jpg", "2020-0217-110854_071916_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane in each direction and no median extends ahead on smooth pavement, and traffic is slow as the ego vehicle waits in the left lane while the oncoming lane to the right stays clear. A white pickup truck stopped directly ahead in the ego lane blocks the path and controls the pace. Along the left curb beside the ego vehicle, a white van stands still slightly ahead. Farther ahead-left, another small white van is also stopped at the curb near the pickup. No prominent signals or speed signs are visible, and no other moving vehicles or pedestrians appear.", "hazard_reasoning": "There is a white pickup truck stopped in the ego lane. The driver must stop because the stopped vehicle directly ahead poses a risk of rear-end collision if not noticed promptly."}
{"id": "train_02796", "split": "train", "clip_key": "2020-0129-105040_045373_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "045373"}, "frames": ["2020-0129-105040_045373_movie_t-3.jpg", "2020-0129-105040_045373_movie_t-2.jpg", "2020-0129-105040_045373_movie_t-1.jpg", "2020-0129-105040_045373_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with dry asphalt and a guardrail separating a side carriageway to the right; traffic is heavy and slow. A silver boxy minivan directly ahead in the ego lane creeps forward and occasionally brakes, controlling the ego vehicle's pace. To the left, a large blue mixer truck travels alongside in the adjacent lane at similar speed, limiting lateral space. Farther ahead in the left lane, a white compact car merges into the queue and slows with it. Overhead traffic signals hang in the distance, and several trucks proceed on the separated roadway to the right.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02797", "split": "train", "clip_key": "titan_clip_957_000102_movie", "source": {"subset": "titan", "scenario": "clip_957", "frame": "000102"}, "frames": ["titan_clip_957_000102_movie_t-3.jpg", "titan_clip_957_000102_movie_t-2.jpg", "titan_clip_957_000102_movie_t-1.jpg", "titan_clip_957_000102_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the stopped truck", "environment_perception": "An urban two-way street with no median and smooth pavement carries light traffic between tall buildings. Ahead in the ego lane, a white truck is stopped in front of the car, blocking the path and constraining the pace. Several vehicles are parked along the left curb near and farther ahead, slightly narrowing the usable lane near the truck. A pedestrian stands on the left sidewalk and remains off the road. A 30 km/h speed limit sign is visible on the left.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The stopped truck blocks the lane ahead and may require the driver to slow down or change lanes, so the driver should be cautious."}
{"id": "train_02798", "split": "train", "clip_key": "2020-0131-103016_080792_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "080792"}, "frames": ["2020-0131-103016_080792_movie_t-3.jpg", "2020-0131-103016_080792_movie_t-2.jpg", "2020-0131-103016_080792_movie_t-1.jpg", "2020-0131-103016_080792_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three lanes in the ego direction runs past shops and a bus stop, the pavement dry and smooth with moderate, steady traffic. A white van ahead in the ego lane moves away gradually as the vehicles farther ahead advance, maintaining a gap to the flow. In the right adjacent lane, a large box truck is slightly ahead and continues straight at a similar pace, partly blocking the right view. Farther ahead, several cars in both through lanes proceed straight and collectively set the speed. No salient signals or hazards appear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02799", "split": "train", "clip_key": "2020-0207-151349_015660_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "015660"}, "frames": ["2020-0207-151349_015660_movie_t-3.jpg", "2020-0207-151349_015660_movie_t-2.jpg", "2020-0207-151349_015660_movie_t-1.jpg", "2020-0207-151349_015660_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth pavement passes office buildings, and traffic is heavy and mostly stopped in a queue. A white minivan directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle in place. To the right front, a tall box truck in the adjacent lane is also stopped alongside the van as the line of vehicles waits. To the left, another cargo truck in the neighboring lane remains stationary beside the ego car, creating a tight corridor. A low hedge borders the right edge and bright sun glare from ahead-left reduces visibility.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Therefore, the driver should stop to maintain a safe distance and avoid a collision."}
{"id": "train_02800", "split": "train", "clip_key": "2020-0228-150133_019536_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "019536"}, "frames": ["2020-0228-150133_019536_movie_t-3.jpg", "2020-0228-150133_019536_movie_t-2.jpg", "2020-0228-150133_019536_movie_t-1.jpg", "2020-0228-150133_019536_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one narrow lane each way is marked by a solid yellow centerline; the pavement is dry and traffic in the ego direction is slow and queued. The ego travels in the left-side lane past shops and a guardrail as the road bends slightly right, and no oncoming vehicles are visible. A gray van directly ahead in the ego lane slows to a crawl because of congestion in front, keeping the ego car stuck behind it. Farther ahead in the same lane, a large bus creeps or stands, forming the head of the queue and setting the pace.", "hazard_reasoning": "There is a gray van slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should slow down to maintain a safe following distance under these conditions."}
{"id": "train_02801", "split": "train", "clip_key": "titan_clip_156_000204_movie", "source": {"subset": "titan", "scenario": "clip_156", "frame": "000204"}, "frames": ["titan_clip_156_000204_movie_t-3.jpg", "titan_clip_156_000204_movie_t-2.jpg", "titan_clip_156_000204_movie_t-1.jpg", "titan_clip_156_000204_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street runs under an elevated rail with no median and worn pavement, and traffic remains light. Ahead in the ego lane, a white box truck moves slowly near the left curb under the bridge, constraining the ego vehicle's pace. From the near left, a pedestrian looking at a phone steps into the roadway and walks across toward the right through the ego lane. A side street branches to the right past a marked crossing. A red triangular stop sign is mounted on the left-side pillar.", "hazard_reasoning": "There is a pedestrian looking into the phone, wearing a white dress and carrying a handbag, about to cross the road from the left to the right side. The distracted pedestrian may step into the lane unexpectedly, so you should slow down to maintain control and avoid a potential collision."}
{"id": "train_02802", "split": "train", "clip_key": "titan_clip_1050_000192_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1050_000192_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1050_000192_movie_t-3_augB1.jpg", "titan_clip_1050_000192_movie_t-2_augB1.jpg", "titan_clip_1050_000192_movie_t-1_augB1.jpg", "titan_clip_1050_000192_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with one lane each direction has smooth pavement and light, slow traffic as a white van is stopped at the left curb ahead, narrowing the ego lane. A woman in green pants and a pink shirt carrying a handbag walks toward the ego vehicle in the ego lane to pass the parked vehicle, briefly occupying the path. Several pedestrians by the left storefront near the van edge off the sidewalk and gather at its rear, potentially entering the lane and constraining the ego car's pace. A distant car approaches in the opposite lane as oncoming traffic but remains clear. Parking signs line the street, and the stopped van creates a pinch point.", "hazard_reasoning": "There is a female pedestrian, wearing green pants and a pink shirt, carrying a handbag, walking towards the ego car, in the ego lane, because of a parked vehicle. The pedestrian is entering the driving lane to bypass the parked vehicle, so the driver should adjust course to avoid a collision."}
{"id": "train_02803", "split": "train", "clip_key": "2020-0218-103119_051138_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "051138"}, "frames": ["2020-0218-103119_051138_movie_t-3.jpg", "2020-0218-103119_051138_movie_t-2.jpg", "2020-0218-103119_051138_movie_t-1.jpg", "2020-0218-103119_051138_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In a dense urban setting, the ego vehicle approaches a wide signalized intersection on a multi-lane road with clear markings and smooth pavement; traffic is moderate and begins to move. A white box truck directly ahead in the ego lane accelerates under the green signal, leading the ego car through and setting its pace. In the adjacent right lane, a gray sedan turns right into the cross street, moving away from the ego path. On the far side, several pedestrians wait at the crosswalk near the corner as vehicles proceed on the green.", "hazard_reasoning": "There is a white truck accelerating in the ego lane, in front of the ego car, because of a green traffic light. The truck's acceleration indicates that the signal has just changed to green and the driver needs to start moving promptly to maintain smooth traffic flow and avoid blocking the intersection."}
{"id": "train_02804", "split": "train", "clip_key": "2020-0205-103411_044734_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "044734"}, "frames": ["2020-0205-103411_044734_movie_t-3.jpg", "2020-0205-103411_044734_movie_t-2.jpg", "2020-0205-103411_044734_movie_t-1.jpg", "2020-0205-103411_044734_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under stacked elevated expressways, with a fenced median on the right dividing opposite flows and smooth pavement; traffic is moderate and queued at a signalized intersection. A black hatchback directly ahead in the ego lane is stopped at the stop line because the light is red, holding the ego vehicle. Slightly ahead to the left, a white box van in the adjacent lane is also stationary for the same light, limiting lateral options. To the right beyond the fence, oncoming cars line up at the junction and wait, posing no immediate conflict. Overhead signals show red for the ego approach with lane arrows visible.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to avoid a rear-end collision with the stopped hatchback."}
{"id": "train_02805", "split": "train", "clip_key": "titan_clip_326_000078_movie", "source": {"subset": "titan", "scenario": "clip_326", "frame": "000078"}, "frames": ["titan_clip_326_000078_movie_t-3.jpg", "titan_clip_326_000078_movie_t-2.jpg", "titan_clip_326_000078_movie_t-1.jpg", "titan_clip_326_000078_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for crossing pedestrians", "environment_perception": "A narrow urban side street with no centerline extends between tall buildings, joining from a cobblestone forecourt onto smooth asphalt; traffic is light with only pedestrians present. Two pedestrians on the left, both in white shirts and carrying handbags, walk toward the ego vehicle along the edge and may encroach into the lane. Ahead near the center-left, another man in a white shirt approaches within the roadway, directly constraining the vehicle's approach. Farther ahead on the right, a small group walks toward the camera along the curb, partially occupying the lane and narrowing the passage. A blue one-way sign and a convex mirror on a pole at the left corner are visible, with tight building corners limiting sightlines.", "hazard_reasoning": "There are two pedestrians wearing a white shirt and handbag, walking along the left side of the road, toward the ego car. The driver should slow down to allow the pedestrians to cross safely and avoid a potential collision."}
{"id": "train_02806", "split": "train", "clip_key": "titan_clip_879_000060_movie", "source": {"subset": "titan", "scenario": "clip_879", "frame": "000060"}, "frames": ["titan_clip_879_000060_movie_t-3.jpg", "titan_clip_879_000060_movie_t-2.jpg", "titan_clip_879_000060_movie_t-1.jpg", "titan_clip_879_000060_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision", "environment_perception": "A narrow urban two-way street with edge lines but no centerline appears clean and smooth, and traffic is light as the ego vehicle proceeds straight. Ahead in the middle of the road, a pedestrian in a white shirt holds a bicycle and stands in the travel way, directly in the ego path. Slightly farther ahead, a small white van traveling in the same direction moves away slowly, setting the pace. On the right side, another white van and a scooter are parked at the curb, narrowing the usable roadway near the sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, holding a bicycle, and standing in the middle of the road. The driver should slow down to avoid collision since the pedestrian is blocking the lane."}
{"id": "train_02807", "split": "train", "clip_key": "titan_clip_271_000354_movie", "source": {"subset": "titan", "scenario": "clip_271", "frame": "000354"}, "frames": ["titan_clip_271_000354_movie_t-3.jpg", "titan_clip_271_000354_movie_t-2.jpg", "titan_clip_271_000354_movie_t-1.jpg", "titan_clip_271_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian carefully", "environment_perception": "An urban one-lane side street with smooth pavement runs between buildings and opens onto a brighter cross street; traffic is light with no vehicles in view. A group of pedestrians crosses the mouth of the side street ahead in both directions, occupying the exit and constraining the ego vehicle from entering the cross street. On the left ahead, a pedestrian in a white shirt and black pants walks away along the left edge of the lane where there is no sidewalk, remaining within the roadway and slowing the approach. On the near left, another man walks toward the camera close to the lane edge, passing alongside the ego vehicle's path. A yield sign stands on the left at the intersection.", "hazard_reasoning": "The pedestrian in a white shirt and black pants is walking on the left side of the road, away from the ego car, because there is no sidewalk. Drivers must manoeuvre around the pedestrian carefully to avoid collision given the lack of a dedicated walkway."}
{"id": "train_02808", "split": "train", "clip_key": "titan_clip_570_000222_movie", "source": {"subset": "titan", "scenario": "clip_570", "frame": "000222"}, "frames": ["titan_clip_570_000222_movie_t-3.jpg", "titan_clip_570_000222_movie_t-2.jpg", "titan_clip_570_000222_movie_t-1.jpg", "titan_clip_570_000222_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban two-way street with one narrow lane in each direction and no divider runs between low buildings; the pavement looks smooth and traffic is light. A white car ahead in the ego lane moves away steadily and lightly governs the ego vehicle's pace. A white van is parked on the right side near mid distance, close to the curb and stationary, narrowing the space on that side but not entering the ego path. Farther ahead an oncoming truck proceeds in the opposite lane with ample separation. No signals or unusual signs are apparent, and there are no other obstacles in the roadway.", "hazard_reasoning": "There is a white van parked on the right side of the road. The parked vehicle reduces the available road width and may require the driver to adjust their path to avoid a collision, so the driver should manoeuvre around the obstacle."}
{"id": "train_02809", "split": "train", "clip_key": "2020-0227-104226_043242_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "043242"}, "frames": ["2020-0227-104226_043242_movie_t-3.jpg", "2020-0227-104226_043242_movie_t-2.jpg", "2020-0227-104226_043242_movie_t-1.jpg", "2020-0227-104226_043242_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes on the left side of a painted yellow center line runs straight on dry, well-kept asphalt, and traffic is moderate before easing to a stop near the junction. A white hatchback ahead in the ego lane is stopped at a red signal, constraining the ego car. A small kei van slightly ahead to the left proceeds straight in the adjacent curb lane without impeding the ego path. Oncoming cars travel steadily in the opposite lanes to the right, separated by the center line. Buildings and metal railings line both sides, and no obstacles or work zones are visible.", "hazard_reasoning": "A white hatchback is stopped in front of the ego car in the ego lane, because the light is red. The driver needs to stop to avoid a collision with the halted vehicle ahead and comply with the red signal."}
{"id": "train_02810", "split": "train", "clip_key": "2020-0207-151349_029408_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_029408_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_029408_movie_t-3_augB1.jpg", "2020-0207-151349_029408_movie_t-2_augB1.jpg", "2020-0207-151349_029408_movie_t-1_augB1.jpg", "2020-0207-151349_029408_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road with dry pavement and a curbside guardrail runs between tall buildings; traffic is heavy and slows under strong sun glare ahead. A white truck directly ahead in the ego lane slows because of congestion in front, constraining the ego vehicle's pace. To the right, a line of cars crawls beside and slightly ahead of the ego vehicle and may merge left into the ego lane. Ahead left, a small car in the adjacent lane proceeds at a similar speed just beyond the truck, holding its lane.", "hazard_reasoning": "A white truck slowing down in the ego lane because of traffic congestion ahead. You should slow down to maintain a safe distance and avoid rear-end collision in the congested traffic."}
{"id": "train_02811", "split": "train", "clip_key": "2020-0220-102630_037136_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "037136"}, "frames": ["2020-0220-102630_037136_movie_t-3.jpg", "2020-0220-102630_037136_movie_t-2.jpg", "2020-0220-102630_037136_movie_t-1.jpg", "2020-0220-102630_037136_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and maintain safe following distance", "environment_perception": "An urban multi-lane arterial with painted center markings and smooth dry pavement approaches a signalized intersection, and traffic is heavy with queues forming and stopping in place. A black minivan directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle at a standstill. To the left, a black taxi slightly ahead in the adjacent lane waits in the same queue, limiting room for a lane change. Ahead-left, a small truck with a covered load sits stopped in its lane near the intersection, part of the same blockage. Traffic lights are visible over the junction but the aspect is not clear.", "hazard_reasoning": "There is a black minivan stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop and maintain safe following distance to avoid a rear-end collision in the congested traffic."}
{"id": "train_02812", "split": "train", "clip_key": "2020-0218-103119_022629_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "022629"}, "frames": ["2020-0218-103119_022629_movie_t-3.jpg", "2020-0218-103119_022629_movie_t-2.jpg", "2020-0218-103119_022629_movie_t-1.jpg", "2020-0218-103119_022629_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane in each direction runs between mid-rise buildings, separated by a painted median with posts; the pavement is smooth and traffic is light with steady flow. A white van ahead in the ego lane travels straight at a constant speed, lightly constraining the ego vehicle's pace. Farther ahead, a white box truck in the same lane drives away from the camera, continuing straight and remaining in the ego path. In the opposite lanes to the right of the median, a maroon van approaches and passes while staying in its lane without affecting the ego course.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. Slow down to maintain a safe following distance and avoid collision if it brakes suddenly."}
{"id": "train_02813", "split": "train", "clip_key": "2020-0131-135401_067060_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "067060"}, "frames": ["2020-0131-135401_067060_movie_t-3.jpg", "2020-0131-135401_067060_movie_t-2.jpg", "2020-0131-135401_067060_movie_t-1.jpg", "2020-0131-135401_067060_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban truss bridge carries three same-direction lanes with side railings and smooth pavement marked by large painted warnings; there is no physical median, and traffic flows at a steady moderate pace. Ahead in the ego lane, a blue truck continues straight at a constant speed and effectively sets our pace. To the right, a white van in the curbside lane travels slightly slower but holds its line without encroaching on the ego lane. Farther ahead in the right lane, a larger box truck proceeds straight and partially blocks the view beyond. No signals or hazards are evident.", "hazard_reasoning": "There are no immediate hazards detected, so the driver can maintain current speed and lane position."}
{"id": "train_02814", "split": "train", "clip_key": "titan_clip_685_000222_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_685_000222_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_685_000222_movie_t-3_augB1.jpg", "titan_clip_685_000222_movie_t-2_augB1.jpg", "titan_clip_685_000222_movie_t-1_augB1.jpg", "titan_clip_685_000222_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of pedestrian on right side", "environment_perception": "An urban commercial street with a narrow two-way carriageway has smooth pavement and no median, and vehicle traffic is light while pedestrian activity is heavy. The ego vehicle proceeds along the left side as several people occupy the roadway ahead. On the right, a pedestrian in a blue T-shirt walks toward the ego vehicle and diagonally into the lane, encroaching on the path. At the left edge near the foreground, another pedestrian moves from the sidewalk into the street toward the center, close to the ego lane. Farther ahead in the middle of the road, a small group of pedestrians walks along and across the lane, setting the pace. Advertising boards line the right sidewalk but remain clear of the travelway.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt and walking on the right side of the road, towards the ego vehicle. The driver should be aware because the pedestrian may step into the lane unexpectedly."}
{"id": "train_02815", "split": "train", "clip_key": "2020-0205-152530_047334_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "047334"}, "frames": ["2020-0205-152530_047334_movie_t-3.jpg", "2020-0205-152530_047334_movie_t-2.jpg", "2020-0205-152530_047334_movie_t-1.jpg", "2020-0205-152530_047334_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the white truck", "environment_perception": "An urban multi-lane arterial with red-painted pavement runs between tall buildings, separated from opposing traffic by a planted median on the right; the surface is smooth and traffic is heavy with a queue at the junction. A white box truck is directly ahead in the ego lane, stopped for a red light and holding the ego car. In the adjacent right lane a black hatchback waits slightly ahead in the queue, creeping forward and remaining alongside the ego path. Farther ahead in the next lane a dark SUV is also stopped in line, adding to the congestion. Overhead signals facing the ego direction display red.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe following distance and comply with the traffic signal."}
{"id": "train_02816", "split": "train", "clip_key": "2020-0218-103119_016067_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "016067"}, "frames": ["2020-0218-103119_016067_movie_t-3.jpg", "2020-0218-103119_016067_movie_t-2.jpg", "2020-0218-103119_016067_movie_t-1.jpg", "2020-0218-103119_016067_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two same-direction lanes and two oncoming lanes has smooth pavement and traffic paused at a signalized intersection. Ahead in the ego lane, a white hatchback is stopped for a red light, holding the ego car. In the adjacent left lane a large box truck also waits near the curb alongside the ego vehicle. On the right side, oncoming vehicles proceed through the intersection in their lanes. A cyclist rides along the sidewalk to the right near the junction, separated from the roadway by a railing. Overhead signals show red for the ego approach.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of a red traffic light. The driver should stop promptly to maintain a safe distance and comply with the red signal, preventing a collision."}
{"id": "train_02817", "split": "train", "clip_key": "titan_clip_1183_000234_movie", "source": {"subset": "titan", "scenario": "clip_1183", "frame": "000234"}, "frames": ["titan_clip_1183_000234_movie_t-3.jpg", "titan_clip_1183_000234_movie_t-2.jpg", "titan_clip_1183_000234_movie_t-1.jpg", "titan_clip_1183_000234_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian distracted by phone", "environment_perception": "An urban narrow one-lane street with worn asphalt runs between buildings and a convenience store, with light, slow-moving traffic and no divider. The ego vehicle proceeds straight at low speed. On the right edge, a pedestrian looks at a phone while pulling a suitcase and walks toward the ego vehicle along the curb, potentially stepping into the lane. A small group of pedestrians waits on the right sidewalk near a gate, some shifting toward the roadway and narrowing clearance. Far ahead near the center, a white van is stopped or inching forward, constraining flow. A 30 speed-limit sign is posted on a pole.", "hazard_reasoning": "There is a pedestrian looking into a phone, pulling a suitcase, and walking, on the right side of the road, towards the ego-car. The pedestrian's attention is diverted by the phone, increasing the risk they may step into the roadway unexpectedly, so the driver should be aware and reduce speed."}
{"id": "train_02818", "split": "train", "clip_key": "2020-0226-101332_044260_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "044260"}, "frames": ["2020-0226-101332_044260_movie_t-3.jpg", "2020-0226-101332_044260_movie_t-2.jpg", "2020-0226-101332_044260_movie_t-1.jpg", "2020-0226-101332_044260_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs beneath an elevated structure with three same-direction lanes, no physical median, and fresh dark asphalt; traffic is moderate and moving steadily. A white van directly ahead in the ego lane proceeds under a green straight arrow and sets the ego vehicle's pace. To the right, a large green dump truck travels alongside in the adjacent lane at similar speed, reducing right-side clearance. On the left, a white sedan draws level with the ego car and continues straight a little ahead. Farther left, a silver box truck ahead holds its lane and moves steadily with the flow. Overhead Japanese direction signs and lane signals are visible at the intersection.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane, because of the green traffic arrow. To maintain a safe following distance and comply with the directional signal, you should follow the vehicle ahead."}
{"id": "train_02819", "split": "train", "clip_key": "2020-0129-105040_094141_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "094141"}, "frames": ["2020-0129-105040_094141_movie_t-3.jpg", "2020-0129-105040_094141_movie_t-2.jpg", "2020-0129-105040_094141_movie_t-1.jpg", "2020-0129-105040_094141_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial carries three same-direction lanes with painted channelization and smooth dry pavement, and traffic moves at a moderate pace toward a signalized intersection. The white pickup truck ahead in the ego lane accelerates away from the ego car, opening a larger gap. A black sedan slightly ahead in the left adjacent lane continues straight at a steady speed, tracking alongside without drifting toward the ego lane. A white van in the right lane proceeds forward toward the junction at a similar pace, remaining parallel to the ego vehicle. Overhead traffic lights ahead show green and vehicles continue through the intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02820", "split": "train", "clip_key": "2020-0226-140503_031124_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "031124"}, "frames": ["2020-0226-140503_031124_movie_t-3.jpg", "2020-0226-140503_031124_movie_t-2.jpg", "2020-0226-140503_031124_movie_t-1.jpg", "2020-0226-140503_031124_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each way passes shops under wet conditions, and traffic is heavy and slow with a short queue forming in the ego lane. A white hatchback directly ahead in the ego lane is stopped because of congestion and blocks the path. Farther ahead in the same lane, a dark van creeps forward and stops with brake lights on, maintaining the backup. A white minivan approaches in the oncoming lane at low speed and continues straight without encroaching. Parked cars line the left curb, including a silver sedan near the camera, narrowing the usable corridor.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver must stop to avoid rear-ending the stationary vehicle due to congestion."}
{"id": "train_02821", "split": "train", "clip_key": "2020-0127-132751_059770_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "059770"}, "frames": ["2020-0127-132751_059770_movie_t-3.jpg", "2020-0127-132751_059770_movie_t-2.jpg", "2020-0127-132751_059770_movie_t-1.jpg", "2020-0127-132751_059770_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the merging van", "environment_perception": "An urban multilane arterial with two same-direction lanes to the left of a painted double centerline shows dry, smooth pavement and light to moderate, steadily moving traffic. A silver hatchback directly ahead in the ego lane continues straight at a steady pace, loosely setting the ego vehicle's speed. On the left, a black van in the curbside lane starts merging right into the ego lane because a white van is parked ahead in that left lane, so it encroaches toward the ego vehicle's path. Additional parked vehicles line the left curb and narrow the usable lane space.", "hazard_reasoning": "There is a black van in the left lane, cutting into the ego-car lane, because of another vehicle parked in the left lane, ahead of the black van. The merging van may abruptly enter your path, so you should be prepared to adjust speed."}
{"id": "train_02822", "split": "train", "clip_key": "2020-0203-114632_060698_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "060698"}, "frames": ["2020-0203-114632_060698_movie_t-3.jpg", "2020-0203-114632_060698_movie_t-2.jpg", "2020-0203-114632_060698_movie_t-1.jpg", "2020-0203-114632_060698_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows a single-lane road with fresh dark pavement curving right, separated by a low concrete barrier from a parallel multi-lane arterial on the right; overall traffic is light. A pedestrian on the left sidewalk near the buildings walks along the railing and stays clear of the roadway. On the adjacent arterial to the right, a black car proceeds ahead along the red-paved lane, remaining separated by the barrier and not affecting the ego path. Farther ahead on the main road beyond the merge, a small truck travels forward. Blue overhead guide signs are visible above the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02823", "split": "train", "clip_key": "titan_clip_950_000150_movie", "source": {"subset": "titan", "scenario": "clip_950", "frame": "000150"}, "frames": ["titan_clip_950_000150_movie_t-3.jpg", "titan_clip_950_000150_movie_t-2.jpg", "titan_clip_950_000150_movie_t-1.jpg", "titan_clip_950_000150_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban two-way street with one narrow lane per direction, no median, and smooth pavement appears quiet with light traffic as the ego vehicle proceeds in the left lane past apartments and roadside trees. A white truck is stopped ahead along the left side of the road with an orange cone near it, occupying part of the ego lane and narrowing the path. A white van sits very close at the near left edge, protruding slightly from the curb but remaining stationary. No oncoming vehicles are close, and no traffic signals or speed signs are prominent.", "hazard_reasoning": "There is a white truck stopped on the left side of the road. This stopped truck partially obstructs the travel lane and reduces available width, so the driver should manoeuvre carefully around it to avoid collision."}
{"id": "train_02824", "split": "train", "clip_key": "2020-0217-110854_046883_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "046883"}, "frames": ["2020-0217-110854_046883_movie_t-3.jpg", "2020-0217-110854_046883_movie_t-2.jpg", "2020-0217-110854_046883_movie_t-1.jpg", "2020-0217-110854_046883_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs beneath an elevated expressway, with three same-direction lanes bordered by hedges and guardrails; the pavement is dry and smooth, and traffic stays light with steady flow. A black van ahead in the ego lane drives away from the ego car at a steady pace, remaining centered and effectively setting the ego vehicle's speed. No nearby vehicles are present in the adjacent lanes. Overhead lane signs show straight-ahead arrows for the lanes, and the road ahead appears clear of obstacles.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. The driver should remain cautious because the van ahead may require speed adjustment or lane change planning."}
{"id": "train_02825", "split": "train", "clip_key": "titan_clip_98_000120_movie", "source": {"subset": "titan", "scenario": "clip_98", "frame": "000120"}, "frames": ["titan_clip_98_000120_movie_t-3.jpg", "titan_clip_98_000120_movie_t-2.jpg", "titan_clip_98_000120_movie_t-1.jpg", "titan_clip_98_000120_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the traffic cone", "environment_perception": "A dense urban two-way street with one narrow lane in each direction runs between tall buildings; the pavement looks smooth and traffic is light. A cyclist rides straight ahead in the ego lane toward the intersection, constraining the pace. A black minivan ahead is stopped at the right curb with its rear slightly intruding into the ego lane. Several pedestrians cross the crosswalk ahead from both sides, with others waiting at the corners. A traffic cone stands on the left side of the ego lane.", "hazard_reasoning": "There is a traffic cone on the left side of the lane. The cone may obstruct the driving path or indicate nearby work, so the driver should manoeuvre carefully around it."}
{"id": "train_02826", "split": "train", "clip_key": "2020-0214-145407_069231_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "069231"}, "frames": ["2020-0214-145407_069231_movie_t-3.jpg", "2020-0214-145407_069231_movie_t-2.jpg", "2020-0214-145407_069231_movie_t-1.jpg", "2020-0214-145407_069231_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a low planted median and dry, intact pavement stretches ahead toward a signalized intersection; traffic is heavy and slow-moving. A white sedan directly ahead in the ego lane slows into the queue because of congestion, setting the ego vehicle's pace. Slightly ahead to the left, a red hatchback in the adjacent same-direction lane rolls forward slowly toward the intersection, staying in lane alongside the queue. At the left edge near the ego car, a black sedan in the curb lane inches ahead toward the stop line, remaining parallel to the ego lane. On the far side of the median, a steady stream of oncoming vans and cars moves through the opposite carriageway.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. Slow down to maintain a safe following distance due to the reduced speed of the vehicle ahead."}
{"id": "train_02827", "split": "train", "clip_key": "2020-0210-101957_009166_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "009166"}, "frames": ["2020-0210-101957_009166_movie_t-3.jpg", "2020-0210-101957_009166_movie_t-2.jpg", "2020-0210-101957_009166_movie_t-1.jpg", "2020-0210-101957_009166_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane street with a double solid centerline and no median runs between close buildings; the pavement looks sound and traffic is moderate with steady opposing flow. Ahead in the ego lane, a green sedan slows because a vehicle further ahead limits space in the lane. Farther ahead in the same direction near the left curb, a large white truck sits partly in the lane, creating a bottleneck that constrains the sedan and the ego vehicle. In the opposing lane to the right, a white mini-van and a light truck approach, keeping to their lane and limiting gaps.", "hazard_reasoning": "There is a green sedan slowing in the ego lane, in front of the ego car, because of another vehicle ahead. The ego vehicle should slow down to maintain a safe following distance and prevent a collision."}
{"id": "train_02828", "split": "train", "clip_key": "titan_clip_1006_000180_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1006_000180_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1006_000180_movie_t-3_augB1.jpg", "titan_clip_1006_000180_movie_t-2_augB1.jpg", "titan_clip_1006_000180_movie_t-1_augB1.jpg", "titan_clip_1006_000180_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban, brick-paved single-lane street with no median runs between tall buildings; traffic is light and the ego vehicle proceeds slowly toward a cross street. A pedestrian carrying a handbag walks in the middle of the lane ahead, moving away from the ego car and occupying the ego path because a white van is stopped along the left curb. The white van ahead stays parked at the curb, narrowing the lane and slowing the ego vehicle's approach. On the right, several pedestrians stand by a storefront and near the far crosswalk, staying on the sidewalk and not entering the lane. Orange cones and a temporary barrier line the left side.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking in the middle of the road, away from the ego car, because of the parked vehicle. The driver should slow down to avoid collision with the pedestrian forced onto the roadway by the parked van."}
{"id": "train_02829", "split": "train", "clip_key": "titan_clip_1256_000144_movie", "source": {"subset": "titan", "scenario": "clip_1256", "frame": "000144"}, "frames": ["titan_clip_1256_000144_movie_t-3.jpg", "titan_clip_1256_000144_movie_t-2.jpg", "titan_clip_1256_000144_movie_t-1.jpg", "titan_clip_1256_000144_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian crossing ahead", "environment_perception": "An urban residential street with one narrow lane per direction and no median comes into view, pavement smooth and traffic light as the ego approaches an unsignalized intersection with a zebra crossing. On the right at the crosswalk, a dark SUV noses out from the side street and starts turning left into the ego lane, likely to merge ahead and constrain the approach. The oncoming lane appears clear while several parked vehicles line both curbs farther along, slightly narrowing the corridor. A blue pedestrian/school crossing sign stands on the left near the corner.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants and crossing the street from the right. The pedestrian is stepping into the road ahead and may enter the vehicle's path, so the driver should be aware of the crossing pedestrian."}
{"id": "train_02830", "split": "train", "clip_key": "titan_clip_688_000534_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_688_000534_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_688_000534_movie_t-3_augB1.jpg", "titan_clip_688_000534_movie_t-2_augB1.jpg", "titan_clip_688_000534_movie_t-1_augB1.jpg", "titan_clip_688_000534_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way carriageway, no median, and smooth asphalt shows very light vehicular flow as shopfronts and parked vehicles constrict the edges. A pedestrian ahead in the middle of the lane walks toward the ego vehicle, briefly occupying the travel path. On the right, a man carrying a backpack and wearing a gray shirt walks toward the ego car because shop displays and a parked car obstruct the shoulder, so he continues in the roadway. Another person stands by a merchandise rack on the right, remaining at the curb and not entering the lane. Bicycles line the left side and a white car is stopped on the right, further narrowing clearance.", "hazard_reasoning": "There is a man carrying a backpack, wearing a gray shirt, and walking on the right side of the road towards the ego car because of obstacles on the right shoulder. The pedestrian is encroaching into the lane, so the driver should slow down to avoid a potential collision."}
{"id": "train_02831", "split": "train", "clip_key": "2020-0131-135401_073492_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "073492"}, "frames": ["2020-0131-135401_073492_movie_t-3.jpg", "2020-0131-135401_073492_movie_t-2.jpg", "2020-0131-135401_073492_movie_t-1.jpg", "2020-0131-135401_073492_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy, stop-and-go traffic in the same direction. Vehicles queue across at least three lanes with no median visible. A black hatchback directly ahead in the ego lane is stopped because of congestion and holds the ego vehicle. To the left, a large white box truck is stopped slightly ahead in the adjacent lane, towering beside the ego car and constraining any move left. On the right, a silver van sits slightly ahead in the neighboring lane and creeps forward, keeping a tight gap that limits a rightward merge. An overhead gantry sign shows straight-through arrows for the left lanes and a right-turn arrow for the far-right lane.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, because of traffic congestion ahead. Stop to avoid a collision with the halted vehicle caused by congestion."}
{"id": "train_02832", "split": "train", "clip_key": "2020-0129-105040_006170_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-105040_006170_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-105040_006170_movie_t-3_augB1.jpg", "2020-0129-105040_006170_movie_t-2_augB1.jpg", "2020-0129-105040_006170_movie_t-1_augB1.jpg", "2020-0129-105040_006170_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with dry, smooth pavement carries moderate traffic that compresses ahead. A white box truck directly ahead in the ego lane slows because of congestion further up, constraining the ego vehicle's pace. In the lane to the right, a cab-over truck slightly ahead continues straight at a steadier speed, overtaking the slower ego lane. Farther right near the curb, another small white truck proceeds slowly in its lane while maintaining separation from the ego path. Overhead directional signs with Japanese text indicate route choices at 300 m, and mild sun glare from the upper left reduces contrast.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_02833", "split": "train", "clip_key": "titan_clip_292_000324_movie", "source": {"subset": "titan", "scenario": "clip_292", "frame": "000324"}, "frames": ["titan_clip_292_000324_movie_t-3.jpg", "titan_clip_292_000324_movie_t-2.jpg", "titan_clip_292_000324_movie_t-1.jpg", "titan_clip_292_000324_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on the roadway", "environment_perception": "An urban commercial side street with no centerline appears narrow and well paved, functioning as a two-way road with light traffic and no moving vehicles. A pedestrian wearing black pants and a spotted shirt walks toward the ego vehicle along the left edge because there is no sidewalk, sharing the travel space and approaching the ego lane. Far ahead, a couple of pedestrians stay near the left curb and continue along the street, posing little immediate impact. Parked bicycles line the right curb and a row of orange cones borders the left storefront, reducing usable width but remaining static.", "hazard_reasoning": "There is a pedestrian wearing black pants and a spotted shirt, walking along the left side of the road, toward from the ego car, because there is no sidewalk. The driver should be aware of this pedestrian on the roadway to avoid a potential collision."}
{"id": "train_02834", "split": "train", "clip_key": "2020-0131-135401_077954_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "077954"}, "frames": ["2020-0131-135401_077954_movie_t-3.jpg", "2020-0131-135401_077954_movie_t-2.jpg", "2020-0131-135401_077954_movie_t-1.jpg", "2020-0131-135401_077954_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection opens ahead on smooth, dry pavement, with a multi-lane cross street divided by a landscaped median and moderate traffic. Several pedestrians walk across the zebra crossing directly in front of the ego vehicle from both sides, occupying its path and holding it at the stop line. A yellow hatchback turns in the middle of the intersection ahead, briefly lingering as it completes the maneuver and potentially crossing the ego lane.", "hazard_reasoning": "There is a yellow hatchback turning in the middle of the intersection in front of the ego-car. The vehicle is cutting across the ego-vehicle's path, so the driver must stop to avoid a collision."}
{"id": "train_02835", "split": "train", "clip_key": "2020-0129-105040_097015_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "097015"}, "frames": ["2020-0129-105040_097015_movie_t-3.jpg", "2020-0129-105040_097015_movie_t-2.jpg", "2020-0129-105040_097015_movie_t-1.jpg", "2020-0129-105040_097015_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided boulevard with two same-direction lanes and a raised fenced median appears dry and in good condition, with light, steadily moving traffic; oncoming lanes run on the far right beyond the median. A white pickup truck ahead in the ego lane accelerates and gradually pulls away as traffic moves, increasing the gap. A dark sedan ahead in the adjacent right lane continues straight at a similar pace without encroaching on the ego lane. Sparse oncoming cars pass on the opposite side of the median and remain separated. No salient signals or work zones are visible, and sidewalks with trees and railings line both sides.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02836", "split": "train", "clip_key": "titan_clip_596_000030_movie", "source": {"subset": "titan", "scenario": "clip_596", "frame": "000030"}, "frames": ["titan_clip_596_000030_movie_t-3.jpg", "titan_clip_596_000030_movie_t-2.jpg", "titan_clip_596_000030_movie_t-1.jpg", "titan_clip_596_000030_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian carefully", "environment_perception": "A narrow urban shopping street with a single lane and no divider appears, the pavement smooth and dry and traffic light with no vehicles. Ahead on the right side, a pedestrian wearing black pants and a white shirt walks toward the ego vehicle along the curb and slightly in the lane, approaching its path. Near the left storefront by the road, another person stands on a step and stays stationary, not entering the roadway. Bicycles line the right curb, and a black shop sign protrudes into the lane, reducing the usable width.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, walking on the right side of the road, toward the ego car. The pedestrian's trajectory intersects the vehicle's path, so the driver must manoeuvre around them to avoid a collision."}
{"id": "train_02837", "split": "train", "clip_key": "2020-0131-135401_066704_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "066704"}, "frames": ["2020-0131-135401_066704_movie_t-3.jpg", "2020-0131-135401_066704_movie_t-2.jpg", "2020-0131-135401_066704_movie_t-1.jpg", "2020-0131-135401_066704_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of merging van from right lane.", "environment_perception": "An urban arterial with three same-direction lanes and smooth dry pavement carries light to moderate flow toward a signalized intersection, with an elevated expressway running alongside on the right. Ahead in the ego lane, a gray van signals and shifts right into the adjacent lane through a gap in traffic, clearing the lane in front of the ego-vehicle. Farther ahead to the right, a black car continues straight and sets the pace as vehicles approach the intersection. On the far right, a white truck travels parallel slightly ahead, maintaining its lane without affecting the ego path.", "hazard_reasoning": "There is a gray van changing lanes, from the ego-lane to the right lane, because there was a break in traffic that allowed the van to change lanes. The driver should be aware of this merging maneuver to avoid a collision if the van cuts in unexpectedly."}
{"id": "train_02838", "split": "train", "clip_key": "titan_clip_500_000726_movie", "source": {"subset": "titan", "scenario": "clip_500", "frame": "000726"}, "frames": ["titan_clip_500_000726_movie_t-3.jpg", "titan_clip_500_000726_movie_t-2.jpg", "titan_clip_500_000726_movie_t-1.jpg", "titan_clip_500_000726_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the traffic cone", "environment_perception": "An urban narrow two-way street with uneven patched pavement lacks clear lane markings, and traffic is light as the ego vehicle creeps forward. A silver van is stopped on the right curbside ahead, and traffic cones on the right side of the road stand beside it, narrowing the available space. A white delivery truck occupies the left foreground while another flatbed waits farther ahead on the left, together tightening the corridor in the ego lane. A person stands near the forward left truck close to the roadway, remaining near the ego vehicle's path.", "hazard_reasoning": "There is a traffic cone on the right side of the road. The cone indicates a road obstruction that could affect the vehicle's path, so the driver should plan to maneuver carefully around it."}
{"id": "train_02839", "split": "train", "clip_key": "2020-0218-103119_041129_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "041129"}, "frames": ["2020-0218-103119_041129_movie_t-3.jpg", "2020-0218-103119_041129_movie_t-2.jpg", "2020-0218-103119_041129_movie_t-1.jpg", "2020-0218-103119_041129_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction runs between mid-rise buildings, divided by double center lines on smooth pavement; traffic is generally light but the ego lane slows. A large white truck directly ahead in the ego lane slows progressively because congestion forms up the road, constraining the ego car's pace. A silver hatchback slightly ahead at the left curb edges forward from a side space toward the lane and may enter the ego path. Oncoming traffic is sparse and keeps to the right, not affecting the ego vehicle.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_02840", "split": "train", "clip_key": "2020-0228-102841_001528_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "001528"}, "frames": ["2020-0228-102841_001528_movie_t-3.jpg", "2020-0228-102841_001528_movie_t-2.jpg", "2020-0228-102841_001528_movie_t-1.jpg", "2020-0228-102841_001528_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrian on right side", "environment_perception": "A narrow urban two-way street with no centerline and serviceable pavement is shown, and traffic is light as the ego vehicle advances slowly. A black microvan ahead near the middle of the road approaches as oncoming traffic, constraining the available space. On the right edge, a man wearing brown pants and a hoodie walks away from the ego car along the building line, remaining close to the side. Closer to the camera on the same side, another pedestrian walks toward the ego vehicle along the curb and may edge into the lane. Bicycles are parked along the left storefronts, slightly encroaching into the roadway.", "hazard_reasoning": "There is a man wearing brown pants and a hoodie walking on the right side of the road, away from the ego car. The driver should be cautious because the pedestrian may step onto the road unexpectedly."}
{"id": "train_02841", "split": "train", "clip_key": "titan_clip_747_000030_movie", "source": {"subset": "titan", "scenario": "clip_747", "frame": "000030"}, "frames": ["titan_clip_747_000030_movie_t-3.jpg", "titan_clip_747_000030_movie_t-2.jpg", "titan_clip_747_000030_movie_t-1.jpg", "titan_clip_747_000030_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "The camera travels along a narrow urban two-way street without a center divider, the asphalt patched but clear, and motor traffic is light with no oncoming vehicles visible. Ahead in the middle of the road, a pedestrian in a white shirt carrying a backpack walks away from the ego-car, occupying the travel path and setting the pace. Slightly farther ahead another person walks along the lane near the centerline, continuing in the same direction and keeping to the ego vehicle's path. At the right edge by a storefront, a woman stands close to the roadway while using her phone, positioned where she may step into the lane. Orange cones and clusters of parked bicycles line the curbs, narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, and walking, in the middle of the road, away from the ego-car. The driver should manoeuvre carefully around the pedestrian to maintain safe clearance."}
{"id": "train_02842", "split": "train", "clip_key": "titan_clip_232_000882_movie", "source": {"subset": "titan", "scenario": "clip_232", "frame": "000882"}, "frames": ["titan_clip_232_000882_movie_t-3.jpg", "titan_clip_232_000882_movie_t-2.jpg", "titan_clip_232_000882_movie_t-1.jpg", "titan_clip_232_000882_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrian crossing", "environment_perception": "A narrow urban commercial street with brick-like paving and no center line runs between tall buildings, and the ego vehicle proceeds along the left side with light, slow traffic. A pedestrian ahead on the left walks away along the curb near the ego path, potentially edging toward the roadway. On the right, two pedestrians, one holding an umbrella, walk toward the camera close to the curb, remaining near the travel lane and relevant due to proximity. A white van stands along the right curb beside the ego vehicle, narrowing the lane and limiting clearance.", "hazard_reasoning": "There is a female pedestrian wearing beige pants, crossing the street in a marked crosswalk, from right to left, in front of the ego-car. The driver must stop because the pedestrian is directly in the vehicle's path in the crosswalk, posing a collision risk."}
{"id": "train_02843", "split": "train", "clip_key": "2020-0228-102841_036199_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "036199"}, "frames": ["2020-0228-102841_036199_movie_t-3.jpg", "2020-0228-102841_036199_movie_t-2.jpg", "2020-0228-102841_036199_movie_t-1.jpg", "2020-0228-102841_036199_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "A tree-lined urban arterial with multiple same-direction lanes and a curbside sidewalk with guardrail has smooth pavement and heavy traffic queued at a signal. A black hatchback directly ahead in the ego lane is stopped in the queue because the traffic signal ahead shows red, holding the ego vehicle. In the adjacent right lane, a white SUV waits slightly ahead, forming a parallel line beside the ego path. Farther ahead, a white van in the center lanes remains stationary with the queue, further constraining movement. The signal displays red, and a circular 50 speed-limit sign is posted on the roadside.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, because of the red traffic light. The driver should stop immediately to avoid colliding with the halted vehicle at the intersection."}
{"id": "train_02844", "split": "train", "clip_key": "2020-0207-101955_086932_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "086932"}, "frames": ["2020-0207-101955_086932_movie_t-3.jpg", "2020-0207-101955_086932_movie_t-2.jpg", "2020-0207-101955_086932_movie_t-1.jpg", "2020-0207-101955_086932_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban expressway with several same-direction lanes runs between sound barriers and elevated supports, the pavement smooth while traffic remains heavy and slow. A small blue flatbed truck directly ahead in the ego lane creeps forward, constraining the ego vehicle's pace. Farther ahead in the same lane, a blue truck fitted with a crane is stopped and flashing hazard lights because of congestion, forming a queue in front of it. In the lane to the left, a large silver flatbed moves slowly alongside, limiting chances for the ego vehicle to merge.", "hazard_reasoning": "There is a blue truck with a crane stopped and displaying hazard lights in the ego lane because of traffic congestion ahead. Drivers should stop because the stopped truck with hazard lights indicates an obstruction ahead requiring immediate braking to avoid collision."}
{"id": "train_02845", "split": "train", "clip_key": "titan_clip_995_000498_movie", "source": {"subset": "titan", "scenario": "clip_995", "frame": "000498"}, "frames": ["titan_clip_995_000498_movie_t-3.jpg", "titan_clip_995_000498_movie_t-2.jpg", "titan_clip_995_000498_movie_t-1.jpg", "titan_clip_995_000498_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban back street with a single narrow lane and no centerline runs straight between mid-rise buildings, with a brick-paved surface and light traffic. Ahead in the middle of the lane, a pedestrian carrying a handbag walks away from the ego car, occupying the path and setting the pace. From the left crosswalk at the junction, a bicyclist rides out across the vehicle's front and proceeds into the street, likely to merge ahead. On the left curb just past the corner, two pedestrians linger and stroll along the edge by parked bicycles but stay out of the lane. A marked crosswalk is present at the corner and a do-not-enter sign faces the side street.", "hazard_reasoning": "There is a pedestrian carrying a handbag in the middle of the road, walking away from the ego car. The pedestrian is crossing ahead and may not be fully visible to the driver, so slowing down is necessary to avoid a collision and ensure safety."}
{"id": "train_02846", "split": "train", "clip_key": "2020-0214-145407_063478_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "063478"}, "frames": ["2020-0214-145407_063478_movie_t-3.jpg", "2020-0214-145407_063478_movie_t-2.jpg", "2020-0214-145407_063478_movie_t-1.jpg", "2020-0214-145407_063478_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial with three same-direction lanes and no median runs between midrise buildings; the pavement is dry and smooth, and traffic is heavy and slow. A white van directly ahead in the ego lane slows because congestion builds in front, constraining the ego car. A large box truck ahead in the right lane creeps forward near the van's right rear, limiting visibility and reducing options to merge right. Alongside on the immediate right, a dark minibus draws level and continues slowly, keeping close to the ego vehicle and narrowing lateral space. Overhead blue direction signs span the roadway.", "hazard_reasoning": "There is a white van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The van's reduced speed indicates slowing traffic, so the driver should follow the vehicle ahead to maintain safe spacing and adapt to further speed changes under congested conditions."}
{"id": "train_02847", "split": "train", "clip_key": "2020-0207-101955_078264_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_078264_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_078264_movie_t-3_augB1.jpg", "2020-0207-101955_078264_movie_t-2_augB1.jpg", "2020-0207-101955_078264_movie_t-1_augB1.jpg", "2020-0207-101955_078264_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes and a short merge taper on the right runs between guardrails and a sound barrier, with smooth pavement and light-to-moderate flow. A blue flatbed truck is directly ahead in the ego lane and slows because of traffic congestion, limiting the ego vehicle's speed. A white truck travels in the adjacent right lane slightly faster and passes by, remaining separate from the ego path. A speed limit 50 sign and a no-parking sign stand on the left side of the road.", "hazard_reasoning": "There is a blue truck slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and adjust to the reduced traffic flow."}
{"id": "train_02848", "split": "train", "clip_key": "titan_clip_506_000150_movie", "source": {"subset": "titan", "scenario": "clip_506", "frame": "000150"}, "frames": ["titan_clip_506_000150_movie_t-3.jpg", "titan_clip_506_000150_movie_t-2.jpg", "titan_clip_506_000150_movie_t-1.jpg", "titan_clip_506_000150_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrians ahead.", "environment_perception": "A narrow urban side street with an unmarked single lane runs between mid-rise buildings; the asphalt is dry with a few patches and there is no moving vehicular traffic. Ahead in the lane, two pedestrians, one in a black T-shirt and one in a blue T-shirt, walk away from the car in the middle of the roadway and occupy the ego path, constraining its pace. On the right, several pedestrians stand and walk along the sidewalk behind guardrails without stepping into the lane. Farther ahead near the left edge, another person walks along the curb, remaining clear of the vehicle's path.", "hazard_reasoning": "There are two pedestrians wearing black and blue t-shirts walking in front of, and away from, the ego car. They are walking directly ahead and could step into your path, so be aware of pedestrians ahead."}
{"id": "train_02849", "split": "train", "clip_key": "2020-0221-115122_024988_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "024988"}, "frames": ["2020-0221-115122_024988_movie_t-3.jpg", "2020-0221-115122_024988_movie_t-2.jpg", "2020-0221-115122_024988_movie_t-1.jpg", "2020-0221-115122_024988_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with two same-direction lanes, no physical median, dry pavement, and heavy stop-and-go flow. Directly ahead in the ego lane, a white hatchback is stopped because congestion blocks the road ahead, holding the ego car. In the adjacent right lane, a queue of vans and cars creeps forward nose to tail, matching the stoppage and limiting any chance to pass. Ahead to the left along the curb, a small white delivery truck proceeds slowly in a parallel lane, remaining alongside the queue. Pedestrians walk on the left sidewalk, well clear of the carriageway.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to match traffic flow and avoid a rear-end collision."}
{"id": "train_02850", "split": "train", "clip_key": "2020-0218-103119_008455_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "008455"}, "frames": ["2020-0218-103119_008455_movie_t-3.jpg", "2020-0218-103119_008455_movie_t-2.jpg", "2020-0218-103119_008455_movie_t-1.jpg", "2020-0218-103119_008455_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians", "environment_perception": "An urban residential street with a narrow two-way roadway lacks a center line and has green edge lanes; the pavement is smooth and traffic is light with no oncoming vehicles visible. A white box truck ahead in the ego lane moves slowly, setting the pace. A small van is stopped along the left curb, slightly constricting the lane beside it. Two pedestrians wearing face masks walk along the right side near the curb, moving ahead in the same direction and close to the travel lane. A yellow school-children crossing warning sign stands on the left.", "hazard_reasoning": "There are two pedestrians wearing face masks and walking on the right side of the road. The driver should be aware of these pedestrians as they could step into the roadway unexpectedly under normal walking behavior, so caution is needed."}
{"id": "train_02851", "split": "train", "clip_key": "2020-0204-150838_057873_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "057873"}, "frames": ["2020-0204-150838_057873_movie_t-3.jpg", "2020-0204-150838_057873_movie_t-2.jpg", "2020-0204-150838_057873_movie_t-1.jpg", "2020-0204-150838_057873_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway ramp with a single left-hand lane runs between concrete barriers, the pavement dry and smooth; traffic in this lane is light while parallel lanes on the right carry steady flow. A gray coach bus directly ahead in the ego lane slows as it continues forward, constraining the ego vehicle's pace, matching the note about a gray bus slowing in front. To the right, cars on a separate elevated roadway move steadily and remain divided by the barrier, so they do not interact with the ego lane. No traffic lights or notable signs are visible, and there are no pedestrians or cyclists.", "hazard_reasoning": "There is a gray bus slowing down in front of the ego car as it moves in the ego lane. You need to slow down to maintain a safe distance and avoid a possible rear-end collision."}
{"id": "train_02852", "split": "train", "clip_key": "2020-0210-155354_022813_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "022813"}, "frames": ["2020-0210-155354_022813_movie_t-3.jpg", "2020-0210-155354_022813_movie_t-2.jpg", "2020-0210-155354_022813_movie_t-1.jpg", "2020-0210-155354_022813_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and smooth pavement shows slow, heavy flow as a queue builds ahead. A black van directly ahead in the ego lane slows because of traffic congestion ahead, constraining the ego car's pace. In the adjacent right lane, a white flatbed truck loaded with pipes moves slowly slightly ahead, keeping with the jam and limiting a right-lane overtake. Farther right, a silver van and other cars queue closely and inch forward in the same direction. Along the left curb, a small white truck is stopped outside the travel lane and does not affect the path. An overhead blue guide sign is visible, with no signals controlling this segment.", "hazard_reasoning": "There is a black van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should follow this van to maintain a safe distance and adapt to the slower traffic."}
{"id": "train_02853", "split": "train", "clip_key": "2020-0214-102601_073547_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "073547"}, "frames": ["2020-0214-102601_073547_movie_t-3.jpg", "2020-0214-102601_073547_movie_t-2.jpg", "2020-0214-102601_073547_movie_t-1.jpg", "2020-0214-102601_073547_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow suburban two-way residential street with metal railings and smooth pavement runs ahead, and traffic is light but momentarily slow. A black SUV directly ahead in the ego lane slows, constraining the ego car's pace because of traffic congestion ahead. An oncoming white SUV approaches in the opposing lane at low speed and threads past the black SUV with limited clearance. Two pedestrians walk along the left sidewalk near a small park, staying off the roadway. A small truck is stopped near the left curb farther ahead by the houses, adding to the tight feel of the corridor.", "hazard_reasoning": "There is a black SUV slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of the vehicle ahead."}
{"id": "train_02854", "split": "train", "clip_key": "titan_clip_780_000342_movie", "source": {"subset": "titan", "scenario": "clip_780", "frame": "000342"}, "frames": ["titan_clip_780_000342_movie_t-3.jpg", "titan_clip_780_000342_movie_t-2.jpg", "titan_clip_780_000342_movie_t-1.jpg", "titan_clip_780_000342_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around it", "environment_perception": "An urban narrow one-lane street with smooth pavement curves left between buildings, with no median and light same-direction traffic. On the right just ahead, a gray truck is parked in the ego lane because it is being unloaded, blocking much of the lane and constraining the ego vehicle's pace. A motorcycle stands immediately behind this truck at the curb, stationary and protruding slightly into the lane, further reducing usable width. Farther ahead in the same lane, a small box truck moves slowly past the obstruction, shaping the path through the bend. On the left near storefronts, a few pedestrians linger and walk along the curbside, close enough that they could step into the lane.", "hazard_reasoning": "There is a gray truck parked on the right side of the road, in the ego lane, because it's being unloaded. The driver should manoeuvre around it to avoid collision and maintain safe passage."}
{"id": "train_02855", "split": "train", "clip_key": "2020-0225-145150_035554_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "035554"}, "frames": ["2020-0225-145150_035554_movie_t-3.jpg", "2020-0225-145150_035554_movie_t-2.jpg", "2020-0225-145150_035554_movie_t-1.jpg", "2020-0225-145150_035554_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with two lanes per direction runs between mid-rise buildings; the pavement is dry and intact, and traffic is slow to moderate with a short queue ahead. A blue light truck directly ahead in the ego lane slows because of congestion further up the road, constraining the ego car's pace. In the lane to the left, a light-green hatchback slightly ahead also eases off and travels parallel, limiting room to change lanes. On the far right beyond double solid white center lines, an oncoming black van proceeds in the opposite lanes without interacting.", "hazard_reasoning": "There's a blue truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The blue truck's reduced speed indicates congestion ahead, so you should slow down to maintain safe distance and avoid collision."}
{"id": "train_02856", "split": "train", "clip_key": "2020-0203-114632_065028_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "065028"}, "frames": ["2020-0203-114632_065028_movie_t-3.jpg", "2020-0203-114632_065028_movie_t-2.jpg", "2020-0203-114632_065028_movie_t-1.jpg", "2020-0203-114632_065028_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs straight with lanes in both directions, separated by a narrow raised median; the asphalt is smooth and dry, and traffic is very light with only a few distant vehicles, with oncoming lanes to the right of the median. The signal facing the ego approach at the wide zebra-crossing intersection shows green. A pedestrian stands on the left corner by the railings near the crosswalk, waiting at the curb and potentially entering when the phase changes. Another person walks along the right sidewalk near the storefronts, remaining clear of the roadway. Far ahead beyond the junction, a few cars proceed in the same direction and some oncoming vehicles are visible, none constraining the ego's pace. A small refuge island with a bollard marks the centerline.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02857", "split": "train", "clip_key": "2020-0214-145407_001544_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "001544"}, "frames": ["2020-0214-145407_001544_movie_t-3.jpg", "2020-0214-145407_001544_movie_t-2.jpg", "2020-0214-145407_001544_movie_t-1.jpg", "2020-0214-145407_001544_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian crossing.", "environment_perception": "An urban multi-lane intersection under an elevated expressway is ahead, with wide zebra crossings and intact pavement; traffic is light to moderate with short queues on the far and right approaches. The ego-vehicle waits in the left lane at the stop line. A pedestrian in black pants and white shoes pushes a stroller from right to left across the front crosswalk, taking priority while the signal holds traffic. Slightly farther left, another pedestrian continues across the same crosswalk, also clearing the ego path. On the right side of the junction, several cars are queued at their stop line and remain stationary, posing no immediate interaction. The overhead signal for the ego approach shows red.", "hazard_reasoning": "There is a female pedestrian in black pants and white shoes, pushing a stroller, crossing the street from right to left in front of the ego-car, because of the red traffic light. The pedestrian is entering the crosswalk legally, so the driver must yield to avoid a collision."}
{"id": "train_02858", "split": "train", "clip_key": "titan_clip_260_000126_movie", "source": {"subset": "titan", "scenario": "clip_260", "frame": "000126"}, "frames": ["titan_clip_260_000126_movie_t-3.jpg", "titan_clip_260_000126_movie_t-2.jpg", "titan_clip_260_000126_movie_t-1.jpg", "titan_clip_260_000126_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban four-way intersection with zebra crossings comes into view on a two-lane two-way road without a median, the pavement smooth and traffic light. The ego vehicle approaches the stop line. Ahead, a pedestrian wearing a white shirt and carrying a backpack crosses the ego path from right to left on the marked crosswalk, occupying the lane and requiring the ego to yield. On the left cross street, a white van waits at its crosswalk before entering the intersection, posing no immediate obstruction. On the right approach, a car is stopped near the corner, holding position as cross traffic passes. No unusual hazards or work zones are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, crossing the street at a pedestrian crossing, from the right side to the left side, because it is a designated crosswalk. You should slow down to allow the pedestrian to cross safely and prevent a collision."}
{"id": "train_02859", "split": "train", "clip_key": "2020-0206-101736_071785_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "071785"}, "frames": ["2020-0206-101736_071785_movie_t-3.jpg", "2020-0206-101736_071785_movie_t-2.jpg", "2020-0206-101736_071785_movie_t-1.jpg", "2020-0206-101736_071785_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban arterial with two lanes in the ego's direction runs between mid-rise buildings, separated from oncoming lanes at the right by painted center lines; the dry pavement looks smooth and traffic in the ego's direction is heavy and slow. A blue flatbed truck is stopped directly ahead in the ego lane because a queue blocks the way, holding the ego vehicle. A small white van sits just to the left of the ego path in the adjacent lane, edging forward beside the queue and limiting any chance to pass. Farther ahead in the same line another work truck is also halted, reinforcing the backup. Oncoming cars to the right move steadily past but stay separated by the markings and do not interact.", "hazard_reasoning": "There is a blue truck stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the halted vehicle."}
{"id": "train_02860", "split": "train", "clip_key": "2020-0131-135401_050869_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-135401_050869_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-135401_050869_movie_t-3_augB1.jpg", "2020-0131-135401_050869_movie_t-2_augB1.jpg", "2020-0131-135401_050869_movie_t-1_augB1.jpg", "2020-0131-135401_050869_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with smooth asphalt and painted lane dividers carries moderate traffic that bunches near an upcoming junction. A black motorcycle ahead in the ego lane slows because of congestion ahead, constraining the ego vehicle's pace. Just beyond it, a white hatchback in the same lane also eases off as the queue builds. In the adjacent right lane, a silver van travels forward slightly faster, remaining parallel without merging into the ego path. An overhead blue direction sign points toward Minowa and Ueno. Buildings line both sides and pedestrians stay on the sidewalks.", "hazard_reasoning": "There is a black motorcycle slowing down in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and prevent a collision."}
{"id": "train_02861", "split": "train", "clip_key": "titan_clip_901_000330_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_901_000330_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_901_000330_movie_t-3_augB1.jpg", "titan_clip_901_000330_movie_t-2_augB1.jpg", "titan_clip_901_000330_movie_t-1_augB1.jpg", "titan_clip_901_000330_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban commercial street with a single narrow lane and brick-pattern pavement runs between shops; there is no median and vehicle flow is light but slow. A garbage truck ahead in the ego lane moves slowly or stops, constraining the car's pace. A pedestrian wearing a blue dress crosses from the left into the middle of the road and continues to the right, occupying the lane ahead of the car. On the right edge, several pedestrians walk along the curb and drift toward the lane, potentially entering the path. A large delivery truck is stopped on the left and juts into the roadway, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a blue dress, crossing the street, and walking in the middle of the road, from the left side and to the right side. The driver should yield because the pedestrian is directly in the vehicle's path and at risk of collision."}
{"id": "train_02862", "split": "train", "clip_key": "titan_clip_43_000054_movie", "source": {"subset": "titan", "scenario": "clip_43", "frame": "000054"}, "frames": ["titan_clip_43_000054_movie_t-3.jpg", "titan_clip_43_000054_movie_t-2.jpg", "titan_clip_43_000054_movie_t-1.jpg", "titan_clip_43_000054_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for pedestrian walking at roadside.", "environment_perception": "A narrow urban street with a single undivided lane runs between tall shopfronts, the block-paved surface in fair condition and traffic light and slow. A silver sedan ahead in the same direction proceeds cautiously near the center and edges left, effectively setting the ego vehicle's pace. A small white truck sits parked along the left curb, protruding slightly into the lane and narrowing the passage. On the right, a pedestrian in a white shirt and jeans walks away from the ego car along the curb.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and jeans, walking along the right side of the road, away from the ego car. Since the pedestrian is close to the roadway, slowing down reduces collision risk if they step into the street."}
{"id": "train_02863", "split": "train", "clip_key": "2020-0129-144857_032697_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "032697"}, "frames": ["2020-0129-144857_032697_movie_t-3.jpg", "2020-0129-144857_032697_movie_t-2.jpg", "2020-0129-144857_032697_movie_t-1.jpg", "2020-0129-144857_032697_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane same-direction road runs under an elevated structure, with a right-side guardrail and smooth pavement; traffic is heavy and queuing with little movement. A black van directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle. Farther ahead in the same lane, a white box truck also waits, extending the queue and limiting forward visibility. No pedestrians or cross traffic are apparent.", "hazard_reasoning": "There is a black van stopped in front of the ego car in the ego lane, because of traffic congestion. Since the van is halted ahead in the same lane, the driver should stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_02864", "split": "train", "clip_key": "2020-0131-103016_074845_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "074845"}, "frames": ["2020-0131-103016_074845_movie_t-3.jpg", "2020-0131-103016_074845_movie_t-2.jpg", "2020-0131-103016_074845_movie_t-1.jpg", "2020-0131-103016_074845_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to maintain safe distance from minivan.", "environment_perception": "An urban multi-lane arterial with three or more same-direction lanes has smooth asphalt and no visible median, and traffic is heavy and slow-moving. A white minivan directly ahead in the ego lane rolls and brakes repeatedly because of congestion, setting the ego vehicle's pace. Multiple box trucks ahead across the middle and right lanes creep forward and block the view farther ahead, reinforcing the queue. A black taxi in the lane to the left travels alongside at a similar slow speed with minimal spacing. A silver van in the far-right lane also crawls forward parallel to the ego lane. An overhead blue guide sign shows several through arrows for upcoming lanes.", "hazard_reasoning": "There is a white minivan in the ego lane, slowing in front of the ego car, because of traffic congestion ahead. Stop to maintain a safe following distance because the minivan is decelerating due to congestion."}
{"id": "train_02865", "split": "train", "clip_key": "2020-0220-102630_039463_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "039463"}, "frames": ["2020-0220-102630_039463_movie_t-3.jpg", "2020-0220-102630_039463_movie_t-2.jpg", "2020-0220-102630_039463_movie_t-1.jpg", "2020-0220-102630_039463_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the van.", "environment_perception": "In an urban commercial district, the ego car follows a two-lane same-direction road curving right toward a signalized intersection, with no divider and clean pavement; traffic is moderate and queued at the light. A black van directly ahead in the ego lane is stopped for the red signal, holding the ego vehicle as described. In the adjacent left lane slightly ahead, a small truck covered by a green tarp slows to a stop at the line, limiting lateral options. On the far left, a black sedan taxi edges forward beside the truck as traffic queues. At the crosswalk ahead to the right, several pedestrians move across the intersection under the red, occupying the crosswalk across the ego lane. The overhead traffic signal shows red.", "hazard_reasoning": "There is a black van stopped in the ego lane, because of the red traffic light, in front of the ego car. Since the black van is halted at the red light, you must stop to maintain a safe distance and avoid a collision."}
{"id": "train_02866", "split": "train", "clip_key": "2020-0210-155354_014468_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "014468"}, "frames": ["2020-0210-155354_014468_movie_t-3.jpg", "2020-0210-155354_014468_movie_t-2.jpg", "2020-0210-155354_014468_movie_t-1.jpg", "2020-0210-155354_014468_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban divided road with smooth pavement descends between mid-rise buildings, with a single through lane in the ego vehicle's direction and light overall flow aside from a short queue near a signalized intersection ahead. A red SUV directly ahead in the ego lane is stopped and occasionally creeping, queuing because of congestion ahead and constraining the ego car. Farther ahead, several same-direction vehicles wait near the junction, sustaining the queue. Overhead traffic lights are visible at the intersection in the distance.", "hazard_reasoning": "There is a red SUV stopped in front of the ego car, because of traffic congestion ahead. Driver should stop immediately to avoid a collision with the halted vehicle."}
{"id": "train_02867", "split": "train", "clip_key": "titan_clip_634_000252_movie", "source": {"subset": "titan", "scenario": "clip_634", "frame": "000252"}, "frames": ["titan_clip_634_000252_movie_t-3.jpg", "titan_clip_634_000252_movie_t-2.jpg", "titan_clip_634_000252_movie_t-1.jpg", "titan_clip_634_000252_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way road without a centerline curves gently right between concrete buildings; the asphalt appears smooth and traffic is very light. At a small side street on the left ahead, two pedestrians wearing face masks and purple dresses walk toward the roadway and approach the ego lane, so they may enter the path. Farther ahead on the right, a pedestrian on the sidewalk continues along the curb and stays clear of traffic. Bollards line the right edge and several bicycles are parked in an alcove on the left, not obstructing the lane.", "hazard_reasoning": "There are two pedestrians wearing a face mask and a purple dress, walking toward the ego lane from the road intersecting on the left. They may step into the vehicle's path unexpectedly, so the driver should slow down to avoid a collision."}
{"id": "train_02868", "split": "train", "clip_key": "titan_clip_743_000108_movie", "source": {"subset": "titan", "scenario": "clip_743", "frame": "000108"}, "frames": ["titan_clip_743_000108_movie_t-3.jpg", "titan_clip_743_000108_movie_t-2.jpg", "titan_clip_743_000108_movie_t-1.jpg", "titan_clip_743_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on the right side", "environment_perception": "An urban commercial street is shown, a narrow two-way road without a center line and clean pavement marked with a 30 zone; vehicle traffic is absent while pedestrian activity is moderate. On the right edge near the ego vehicle, a pedestrian in a blue shirt walks away along the roadway because the sidewalk is narrow, keeping close to the curb and likely to slow the ego vehicle. Farther ahead in the center of the lane, another pedestrian walks diagonally across, momentarily occupying the ego path. Additional pedestrians appear farther ahead along both sides near shopfronts, some moving close to the carriageway. Parked bicycles, trash bins, and rows of cones line the curbs and slightly reduce the usable width.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking on the right side of the road, away from the ego car, because the sidewalk is narrow. The driver should be aware as the pedestrian may step further into the lane, posing a collision risk."}
{"id": "train_02869", "split": "train", "clip_key": "titan_clip_570_000510_movie", "source": {"subset": "titan", "scenario": "clip_570", "frame": "000510"}, "frames": ["titan_clip_570_000510_movie_t-3.jpg", "titan_clip_570_000510_movie_t-2.jpg", "titan_clip_570_000510_movie_t-1.jpg", "titan_clip_570_000510_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with a single lane in each direction has no median, smooth dry pavement, and light traffic, with several cars parked along the left curb. The ego vehicle proceeds straight at a steady pace. A small white van ahead in the same direction travels slowly away and effectively sets the pace. On the left edge, a white car is stopped at the curb and a pedestrian wearing blue pants and a checkered shirt gets out beside it, the open door close to the travel lane and possibly entering the path. On the right sidewalk, another pedestrian walks along the fence parallel to traffic and remains clear of the roadway.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a checkered shirt getting out of his vehicle on the left side of the road. The pedestrian could step into the lane unexpectedly, so the driver should carefully manoeuvre around him to avoid a collision."}
{"id": "train_02870", "split": "train", "clip_key": "2020-0225-145150_000455_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "000455"}, "frames": ["2020-0225-145150_000455_movie_t-3.jpg", "2020-0225-145150_000455_movie_t-2.jpg", "2020-0225-145150_000455_movie_t-1.jpg", "2020-0225-145150_000455_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a double yellow centerline runs between shops; the pavement looks smooth and traffic is light to moderate with steady flow. A small white car ahead in the left lane travels straight away from the ego vehicle, setting the pace. In the oncoming lane, several cars approach near the centerline but stay in their lane. Pedestrians on both sidewalks walk and wait near the crosswalks without stepping into the roadway. A red car is parked at the right curb near a storefront.", "hazard_reasoning": "There is a cyclist wearing a black pants and cycling, on the left side of the road, away from the ego car. Slow down to maintain a safe distance and reduce collision risk if the cyclist moves unpredictably."}
{"id": "train_02871", "split": "train", "clip_key": "2020-0221-115122_028662_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "028662"}, "frames": ["2020-0221-115122_028662_movie_t-3.jpg", "2020-0221-115122_028662_movie_t-2.jpg", "2020-0221-115122_028662_movie_t-1.jpg", "2020-0221-115122_028662_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop.", "environment_perception": "An urban arterial beneath an elevated expressway carries two lanes in the ego direction, with a concrete barrier on the left separating opposing traffic; the dry pavement and heavy congestion keep vehicles mostly stopped. A white hatchback directly ahead in the ego lane is stopped because a queue blocks the lane, holding the ego vehicle. Farther ahead in the same lane, a white van and a larger truck wait under the structure, extending the line of halted traffic. In the adjacent right lane, a black minivan creeps forward alongside without merging, moving only slightly faster than the ego lane.", "hazard_reasoning": "There is a white hatchback that has stopped in front of the ego car because of traffic congestion ahead. The driver should stop promptly to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_02872", "split": "train", "clip_key": "titan_clip_280_000264_movie", "source": {"subset": "titan", "scenario": "clip_280", "frame": "000264"}, "frames": ["titan_clip_280_000264_movie_t-3.jpg", "titan_clip_280_000264_movie_t-2.jpg", "titan_clip_280_000264_movie_t-1.jpg", "titan_clip_280_000264_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "On a narrow urban shopping street with no centerline or median, the pavement looks smooth and traffic is light. Ahead on the left, a man wearing a white shirt and black pants walks away from the ego car along the edge beside a row of orange cones. Just beyond him on the left, a small truck is stopped partly in the lane, narrowing the available space. At the right edge near storefronts, a woman walks toward the camera close to the curb without stepping into the lane. Bicycles and shop displays line the right side, and the cones mark a constrained shoulder.", "hazard_reasoning": "There is a man wearing a white shirt and black pants and walking on the left side of the road, away from the ego car. The pedestrian could unexpectedly enter the travel lane, requiring the driver to manoeuvre carefully."}
{"id": "train_02873", "split": "train", "clip_key": "2020-0225-145150_033741_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "033741"}, "frames": ["2020-0225-145150_033741_movie_t-3.jpg", "2020-0225-145150_033741_movie_t-2.jpg", "2020-0225-145150_033741_movie_t-1.jpg", "2020-0225-145150_033741_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane undivided arterial with smooth asphalt carries heavy, slow-moving same-direction traffic under a pedestrian overpass. The ego travels in a middle lane as vehicles inch forward in congestion. Directly ahead in the ego lane, a blue truck slows because of traffic congestion ahead, constraining the ego car's pace. Ahead slightly right, a green box truck creeps forward in the adjacent lane, keeping alongside the queue and limiting forward visibility and passing room. At the far right across a striped gore, a large white box truck approaches from a side lane and begins merging into the main lanes, which may place it near the ego's path. A small truck with a green tarp is stopped along the left curb. A no-stopping sign is posted on the overpass.", "hazard_reasoning": "There is a blue van slowing down in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_02874", "split": "train", "clip_key": "titan_clip_1238_000066_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1238_000066_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1238_000066_movie_t-3_augB1.jpg", "titan_clip_1238_000066_movie_t-2_augB1.jpg", "titan_clip_1238_000066_movie_t-1_augB1.jpg", "titan_clip_1238_000066_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing", "environment_perception": "A narrow urban shopping street with smooth, undivided pavement curves gently to the right, and traffic is light with no vehicles immediately ahead or oncoming. A pedestrian in a black T-shirt crosses mid-block from the left to the right across the ego lane, moving steadily through the vehicle's path. On the right sidewalk ahead, a few pedestrians walk along the storefronts in the same direction, remaining on the sidewalk and not entering the road. Near the left curb by a shop entrance, another person stands at the edge but stays off the roadway. Buildings and trees at the bend create a partial blind curve that limits forward visibility.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, crossing the street in the middle of the road, from the left side to the right side. The pedestrian is crossing away from a marked crosswalk and may enter the vehicle's path unexpectedly, so the driver should be cautious."}
{"id": "train_02875", "split": "train", "clip_key": "2020-0212-102546_007514_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "007514"}, "frames": ["2020-0212-102546_007514_movie_t-3.jpg", "2020-0212-102546_007514_movie_t-2.jpg", "2020-0212-102546_007514_movie_t-1.jpg", "2020-0212-102546_007514_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the truck", "environment_perception": "An urban multi-lane road in a city curves gently left with good pavement and a short bollard-lined divider separating a right-side lane; traffic is slow and queuing, with no oncoming traffic visible. A white box truck directly ahead in the ego lane is stopped because of traffic congestion, fully blocking the ego vehicle's path. Another box truck farther ahead slightly left rolls forward slowly in the adjacent lane as part of the same queue. A passenger car to the left also creeps ahead in its lane without encroaching on the ego lane.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion. Driver should stop behind the truck to avoid a collision with the halted vehicle."}
{"id": "train_02876", "split": "train", "clip_key": "2020-0210-155354_004307_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-155354_004307_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-155354_004307_movie_t-3_augB1.jpg", "2020-0210-155354_004307_movie_t-2_augB1.jpg", "2020-0210-155354_004307_movie_t-1_augB1.jpg", "2020-0210-155354_004307_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the traffic cone.", "environment_perception": "An urban commercial street with a narrow two-way carriageway approaches a railway underpass; the pavement is dry and traffic moves slowly in a short queue. A white SUV directly ahead in the ego lane creeps and pauses, constraining the pace toward the bridge. On the left edge beside the ego lane, a red traffic cone blocks part of the lane and a black van is stopped at the curb, together narrowing the passage. On the right side, a cyclist rides forward near the curb in the same direction, traveling alongside the queue and close to the ego lane. Pedestrians line both sidewalks near shopfronts. A no-parking sign and underpass height markings are visible.", "hazard_reasoning": "There's a red traffic cone blocking the lane on the left of the ego-car. The cone indicates a lane obstruction and the driver should be cautious to avoid lane deviation or sudden maneuvers."}
{"id": "train_02877", "split": "train", "clip_key": "2020-0204-150838_060855_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "060855"}, "frames": ["2020-0204-150838_060855_movie_t-3.jpg", "2020-0204-150838_060855_movie_t-2.jpg", "2020-0204-150838_060855_movie_t-1.jpg", "2020-0204-150838_060855_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield to merging bus", "environment_perception": "An urban two-lane road with smooth pavement curves left beside warehouse buildings and a guarded sidewalk, and traffic appears light to moderate with only same-direction vehicles visible. In the right lane just ahead, a large white box truck slows, constrained by a white coach bus farther ahead that is merging into the right lane. The bus moves in from the left side of the roadway and occupies the lane ahead, potentially entering the ego vehicle's path and setting the pace. No signals or unusual signs are prominent, and no oncoming traffic or obstacles appear.", "hazard_reasoning": "There is a white truck slowing in the right lane because of the bus merging ahead on the road. You should Yield to the merging bus to avoid abrupt braking and maintain safe traffic flow."}
{"id": "train_02878", "split": "train", "clip_key": "2020-0207-101955_106331_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "106331"}, "frames": ["2020-0207-101955_106331_movie_t-3.jpg", "2020-0207-101955_106331_movie_t-2.jpg", "2020-0207-101955_106331_movie_t-1.jpg", "2020-0207-101955_106331_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway carries three same-direction lanes with a right-side guardrail; the dry pavement is in good condition and traffic is heavy, compressing into a slow queue ahead. Directly ahead in the ego lane, a blue sedan slows because of congestion, setting the ego car's pace. Farther ahead in the same path, a white box truck leads a line of vehicles that are moving slowly. In the adjacent right lane, a white van proceeds at a similar slow speed alongside the ego vehicle.", "hazard_reasoning": "There's a blue sedan slowing in front of the ego car, because of traffic congestion ahead. Drivers should slow down to maintain a safe following distance and adapt to reduced speeds."}
{"id": "train_02879", "split": "train", "clip_key": "titan_clip_1043_000300_movie", "source": {"subset": "titan", "scenario": "clip_1043", "frame": "000300"}, "frames": ["titan_clip_1043_000300_movie_t-3.jpg", "titan_clip_1043_000300_movie_t-2.jpg", "titan_clip_1043_000300_movie_t-1.jpg", "titan_clip_1043_000300_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrians", "environment_perception": "A narrow urban side street with a single unmarked lane runs between tall buildings; the pavement is dark but intact, and traffic is light with no moving vehicles. On the left ahead, three pedestrians wearing blue shirts stand by the curb beside a row of orange cones, close to the travel path and potentially entering the lane. A dark van is stopped at the left edge just beyond them, further narrowing the lane and constraining available passing space. On the right, a wide building driveway opens into a parking garage, with no vehicle emerging.", "hazard_reasoning": "There are three pedestrians wearing blue shirts and standing on the left side of the road. The parked van and cones create a blind spot, so you should carefully manoeuvre around the pedestrians to avoid potential conflicts."}
{"id": "train_02880", "split": "train", "clip_key": "titan_clip_433_000210_movie", "source": {"subset": "titan", "scenario": "clip_433", "frame": "000210"}, "frames": ["titan_clip_433_000210_movie_t-3.jpg", "titan_clip_433_000210_movie_t-2.jpg", "titan_clip_433_000210_movie_t-1.jpg", "titan_clip_433_000210_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully", "environment_perception": "An urban two-way alley with block-paved surface and no centerline runs between shops on the left and a long construction wall on the right; pavement is good and traffic is light at walking pace. Ahead in the ego lane by the left curb, a white van is stopped or creeping, narrowing the passage and constraining speed. An oncoming cyclist in a gray T-shirt with a backpack rides toward the ego along the right side of the road where there is no bicycle lane, tracking near the center and likely to pass close by the van. Several pedestrians move along both edges, and one near the van steps from left to right, creating possible incursions into the travel path.", "hazard_reasoning": "There is a cyclist wearing a gray t-shirt and carrying a backpack, cycling on the right side of the road, toward the ego car, because there is no bicycle lane. The cyclist shares the vehicle lane and limits the driver's available reaction space, so the driver should manoeuvre carefully to avoid a potential sideswipe."}
{"id": "train_02881", "split": "train", "clip_key": "2020-0207-151349_030671_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "030671"}, "frames": ["2020-0207-151349_030671_movie_t-3.jpg", "2020-0207-151349_030671_movie_t-2.jpg", "2020-0207-151349_030671_movie_t-1.jpg", "2020-0207-151349_030671_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane road beneath an elevated expressway has dry pavement, no central divider visible, and heavy, mostly stationary same-direction traffic. A gray box truck directly ahead in the ego lane is stopped with its brake lights on because of congestion, holding the ego car. A yellow taxi in the adjacent right lane is also stopped level with the truck, limiting any chance to merge right. A white SUV slightly ahead to the left proceeds slowly along a narrow curbside lane toward a side street while remaining outside the ego lane.", "hazard_reasoning": "There is a gray truck stopped in front of the ego-car, with its break lights on, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision due to the congestion."}
{"id": "train_02882", "split": "train", "clip_key": "titan_clip_15_000258_movie", "source": {"subset": "titan", "scenario": "clip_15", "frame": "000258"}, "frames": ["titan_clip_15_000258_movie_t-3.jpg", "titan_clip_15_000258_movie_t-2.jpg", "titan_clip_15_000258_movie_t-1.jpg", "titan_clip_15_000258_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully", "environment_perception": "An urban shopping street with a single narrow shared lane has brick paving in good condition and no divider, with very light vehicle flow and many pedestrians. On the left close ahead, a pedestrian wearing a cap and backpack walks away from the ego vehicle along the lane edge and remains in its path. Farther ahead in the same lane, several pedestrians move both toward and away from the ego vehicle at walking pace, constraining progress. By the right curb, a person stands near a storefront and edges toward the roadway, possibly entering the lane. Bicycles parked along the left wall narrow clearance.", "hazard_reasoning": "There is a pedestrian wearing a cap and backpack, walking away from the ego car on the left side of the road. The pedestrian could step onto the crossing unexpectedly, so the driver should manoeuvre carefully to maintain a safe distance and avoid potential collision."}
{"id": "train_02883", "split": "train", "clip_key": "2020-0129-144857_064783_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "064783"}, "frames": ["2020-0129-144857_064783_movie_t-3.jpg", "2020-0129-144857_064783_movie_t-2.jpg", "2020-0129-144857_064783_movie_t-1.jpg", "2020-0129-144857_064783_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane divided road with a guardrail median on the right shows smooth pavement, and traffic in the ego direction is heavy and slow. A silver sedan directly ahead in the ego lane slows due to congestion ahead and constrains the ego car's pace. To the left, several large trucks in adjacent lanes creep forward in a queue near the dashed taper, keeping close to the ego lane and limiting lateral space. Farther ahead, a white truck and other cars bunch up in the same lane. On the separated carriageway to the right, oncoming cars curve past without interaction.", "hazard_reasoning": "There is a silver sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The sedan's deceleration signals that the flow of vehicles is restricted ahead, so the driver should reduce speed to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_02884", "split": "train", "clip_key": "titan_clip_831_000054_movie", "source": {"subset": "titan", "scenario": "clip_831", "frame": "000054"}, "frames": ["titan_clip_831_000054_movie_t-3.jpg", "titan_clip_831_000054_movie_t-2.jpg", "titan_clip_831_000054_movie_t-1.jpg", "titan_clip_831_000054_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around parked truck", "environment_perception": "An urban shopping street with a narrow two-way carriageway has no centerline; the block-paved surface looks sound and traffic is light, slowing near storefronts. On the left in the ego lane, a gray truck is parked for unloading with its rear open, prompting the ego vehicle to favor the right side to pass. A person beside the truck walks around the rear within the lane while handling goods, narrowing the gap and constraining the ego's pace. Farther ahead, a small white van in the same direction proceeds slowly near the center of the street, shaping the flow through the pinch point. Additional pedestrians move along the right sidewalk near shop displays close to the curb but remain outside the lane.", "hazard_reasoning": "There is a gray truck parked on the left side of the road, in the ego lane, because it is being unloaded. The driver should manoeuvre around the parked truck to maintain a safe path and avoid a collision."}
{"id": "train_02885", "split": "train", "clip_key": "2020-0129-144857_064468_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "064468"}, "frames": ["2020-0129-144857_064468_movie_t-3.jpg", "2020-0129-144857_064468_movie_t-2.jpg", "2020-0129-144857_064468_movie_t-1.jpg", "2020-0129-144857_064468_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban elevated two-lane road with metal guardrails on both sides carries slow-moving traffic; the asphalt is dry and somewhat worn, and flow becomes heavy as vehicles compress ahead. In the ego vehicle's right lane, a white sedan in front slows because congestion builds further up the bridge, constraining the ego car's pace. In the adjacent left lane, a line of large trucks creeps forward, one truck alongside the ego vehicle and others queued ahead, all continuing straight and moving slowly beside the ego lane. No oncoming traffic appears on this divided structure, and no traffic signals are visible.", "hazard_reasoning": "There is a white sedan slowing down in the right lane in front of the ego-car because of traffic congestion ahead. The deceleration indicates dense traffic ahead and the driver should slow down to maintain a safe following distance."}
{"id": "train_02886", "split": "train", "clip_key": "titan_clip_1201_000474_movie", "source": {"subset": "titan", "scenario": "clip_1201", "frame": "000474"}, "frames": ["titan_clip_1201_000474_movie_t-3.jpg", "titan_clip_1201_000474_movie_t-2.jpg", "titan_clip_1201_000474_movie_t-1.jpg", "titan_clip_1201_000474_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "A narrow urban two-way street without a centerline runs between small shops, the pavement dry and in good condition, and traffic is very light with no moving vehicles besides the ego car. On the left edge ahead, a pedestrian wearing a white shirt and black pants walks away from the ego vehicle along the roadway, close to the curb and near the travel path. A motorcycle is parked on the left beside vending machines with two orange cones, slightly narrowing the roadside space.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and walking away from the ego car, on the left side of the road. The pedestrian could step into the lane unexpectedly, so you should yield to avoid a potential collision."}
{"id": "train_02887", "split": "train", "clip_key": "2020-0214-145407_060348_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "060348"}, "frames": ["2020-0214-145407_060348_movie_t-3.jpg", "2020-0214-145407_060348_movie_t-2.jpg", "2020-0214-145407_060348_movie_t-1.jpg", "2020-0214-145407_060348_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial approaches an elevated rail overpass, with smooth dry pavement and a painted gore plus a low shrub median separating a right-turn lane; traffic is moderate and flows steadily. A small white van directly ahead in the ego lane continues straight at a steady pace, effectively setting the ego vehicle's speed. To the right, a silver sedan in the right-turn-only lane slows beside the striped median, preparing to turn and remaining out of the ego lane. On the far left, a stream of cars follows a left-curving lane past a green traffic signal and moves away from the ego path.", "hazard_reasoning": "No hazards are present in the caption. Driver can maintain speed and lane position as no adjustments are needed."}
{"id": "train_02888", "split": "train", "clip_key": "2020-0131-135401_016581_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "016581"}, "frames": ["2020-0131-135401_016581_movie_t-3.jpg", "2020-0131-135401_016581_movie_t-2.jpg", "2020-0131-135401_016581_movie_t-1.jpg", "2020-0131-135401_016581_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the same direction runs straight with a concrete median on the right and generally smooth pavement, and traffic is light with steady flow. A black van ahead in the ego lane continues straight through a green signal, modestly setting the ego vehicle's pace. A pedestrian walks along the left sidewalk parallel to traffic and stays clear of the roadway. A white car remains parked at the left curb outside the travel lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02889", "split": "train", "clip_key": "2020-0203-154554_049468_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "049468"}, "frames": ["2020-0203-154554_049468_movie_t-3.jpg", "2020-0203-154554_049468_movie_t-2.jpg", "2020-0203-154554_049468_movie_t-1.jpg", "2020-0203-154554_049468_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with a guardrail along the left and dry pavement; traffic is heavy and queued at an intersection. Directly ahead in the ego lane, a gray sedan is stopped for the red light and holds the ego vehicle. Slightly farther ahead to the right, a small white pickup slows and stops in the adjacent lane as the queue forms, constraining any forward progress. Alongside on the right, a black van edges forward and then stops next to the ego car, limiting room for lane changes. Overhead traffic signals clearly display red.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego car, because of a red traffic light. The driver should stop immediately to avoid a rear-end collision at the red signal."}
{"id": "train_02890", "split": "train", "clip_key": "titan_clip_627_000462_movie", "source": {"subset": "titan", "scenario": "clip_627", "frame": "000462"}, "frames": ["titan_clip_627_000462_movie_t-3.jpg", "titan_clip_627_000462_movie_t-2.jpg", "titan_clip_627_000462_movie_t-1.jpg", "titan_clip_627_000462_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian entering road", "environment_perception": "A narrow urban two-way street with smooth pavement and no center divider runs uphill through a shopping area, with no moving vehicles and moderate foot traffic. On the right side, a woman carrying a handbag walks toward the ego vehicle along the green-painted shoulder at the lane edge and may encroach on its path. Farther ahead near an orange construction barrier, several pedestrians cross and linger in the roadway, occupying space in the ego lane. On the left shoulder close by, a pedestrian holding an umbrella walks toward the ego vehicle while staying near the edge.", "hazard_reasoning": "A woman carrying a handbag, walking on the right side of the road, towards the ego car. The driver should be aware of her potential to enter the roadway and adjust speed to maintain safety."}
{"id": "train_02891", "split": "train", "clip_key": "2020-0203-154554_079338_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "079338"}, "frames": ["2020-0203-154554_079338_movie_t-3.jpg", "2020-0203-154554_079338_movie_t-2.jpg", "2020-0203-154554_079338_movie_t-1.jpg", "2020-0203-154554_079338_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-lane road without a median runs between tree-lined buildings, the pavement looks smooth, and traffic is moderate. Ahead in the ego lane, a large truck moves slowly over a zebra crossing and effectively sets the pace. To the right at the curb near the crosswalk, a black mini-van and a white van are stopped in the parking lane, narrowing the edge but remaining outside the travel lane; contrary to the caption, no white sedan is stopped in the ego lane. In the opposing lane, several cars approach steadily while keeping to their side. Additional vehicles are parked along the right curb, reducing lateral clearance.", "hazard_reasoning": "There is a white sedan stopped in the ego lane. The driver should slow down to avoid a collision with the stationary vehicle ahead, especially with limited visibility due to parked cars."}
{"id": "train_02892", "split": "train", "clip_key": "2020-0207-101955_121932_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "121932"}, "frames": ["2020-0207-101955_121932_movie_t-3.jpg", "2020-0207-101955_121932_movie_t-2.jpg", "2020-0207-101955_121932_movie_t-1.jpg", "2020-0207-101955_121932_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under an elevated viaduct, with three same-direction lanes and clean pavement; traffic is heavy and mostly stopped. A white van directly ahead in the ego lane is stopped because a queue forms in front, holding the ego car in place. In the lane to the left, a pink garbage truck just ahead crawls with the jam, constraining any chance to merge. Farther ahead, a tall box truck in the middle lane remains stopped, contributing to the blockage and limiting forward visibility. A curb and sidewalk line the right edge beside the viaduct.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should stop to avoid a collision with the stationary vehicle."}
{"id": "train_02893", "split": "train", "clip_key": "titan_clip_318_000486_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_318_000486_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_318_000486_movie_t-3_augB1.jpg", "titan_clip_318_000486_movie_t-2_augB1.jpg", "titan_clip_318_000486_movie_t-1_augB1.jpg", "titan_clip_318_000486_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre around cyclist", "environment_perception": "A narrow urban two-way street with single lanes and no median runs between shops and a hotel; the pavement is smooth and traffic is light at a slow pace. A silver minivan ahead in the ego lane travels slowly near the centerline, constraining the ego vehicle's speed. A cyclist wearing a black T-shirt and black pants rides toward the ego car along the left side of the road, approaching near the center and potentially encroaching into the ego lane. A pedestrian on the left sidewalk walks along the storefronts near the curb but remains off the roadway. No traffic signals or speed limit signs are clearly visible.", "hazard_reasoning": "There is a cyclist wearing a black t-shirt and black pants riding on the left side of the road, towards the ego car. The cyclist's position and direction risk a potential collision if the driver does not adjust course, so the driver should manoeuvre around the cyclist to maintain safety."}
{"id": "train_02894", "split": "train", "clip_key": "titan_clip_1342_000354_movie", "source": {"subset": "titan", "scenario": "clip_1342", "frame": "000354"}, "frames": ["titan_clip_1342_000354_movie_t-3.jpg", "titan_clip_1342_000354_movie_t-2.jpg", "titan_clip_1342_000354_movie_t-1.jpg", "titan_clip_1342_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one lane each way has wet pavement and light traffic; the right side is narrowed by a coned-off roadside work zone with parked construction trucks. Ahead in the ego lane, a beige box truck is stopped along the left edge and partially blocks the path, creating a pinch point. Near this truck, a man wearing a towel around his neck pushes a small wheeled cart toward the ego vehicle along the left side of the road because the parked truck is in his way, and he may edge into the ego lane. Farther ahead in the oncoming lane, a car approaches but remains separated by the roadway center.", "hazard_reasoning": "There is a man wearing a towel around his neck, pushing a wheeled cart, and walking on the left side of the road, towards the ego car, because there is a parked truck in the way. The truck forces the pedestrian into the travel lane, so the driver should manoeuvre carefully around them."}
{"id": "train_02895", "split": "train", "clip_key": "titan_clip_522_000528_movie", "source": {"subset": "titan", "scenario": "clip_522", "frame": "000528"}, "frames": ["titan_clip_522_000528_movie_t-3.jpg", "titan_clip_522_000528_movie_t-2.jpg", "titan_clip_522_000528_movie_t-1.jpg", "titan_clip_522_000528_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban commercial street with no centerline functions as a single two-way lane; the dry pavement is slightly worn and traffic is light. Ahead at the left curb, a white truck is parked for loading, with workers handling boxes at its open bed, and the vehicle protrudes into the lane, constraining the ego vehicle's path. On the opposite side, an oncoming cyclist moves slowly along the right edge toward the camera, narrowing the available gap opposite the truck. A woman with an umbrella walks along the left sidewalk near the loading area, while a man on the right sidewalk continues ahead past shopfronts; neither enters the roadway. Several bicycles are parked by the right curb, adding visual clutter but not obstructing the lane.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being loaded. Drivers should carefully manoeuvre around the parked truck to avoid collision and ensure safe passage through the narrow street."}
{"id": "train_02896", "split": "train", "clip_key": "2020-0225-102455_043732_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "043732"}, "frames": ["2020-0225-102455_043732_movie_t-3.jpg", "2020-0225-102455_043732_movie_t-2.jpg", "2020-0225-102455_043732_movie_t-1.jpg", "2020-0225-102455_043732_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban single-lane left-hand roadway runs beside a guardrail that separates oncoming traffic; the pavement is dry and traffic is moderate. Ahead on the left, a black van moves right from the curbside area into the ego lane as it maneuvers around a parked vehicle, briefly encroaching on the ego path. A box truck directly ahead in the ego lane continues at a steady pace and constrains the ego vehicle's speed. To the right beyond the barrier, oncoming cars flow past without interaction. A roadside sign on the left posts 50 km/h.", "hazard_reasoning": "A black van in the left lane is cutting in to the ego lane, because it is maneuvering around a parked vehicle. The driver should slow down to maintain a safe distance and avoid collision with the merging van."}
{"id": "train_02897", "split": "train", "clip_key": "titan_clip_1057_000138_movie", "source": {"subset": "titan", "scenario": "clip_1057", "frame": "000138"}, "frames": ["titan_clip_1057_000138_movie_t-3.jpg", "titan_clip_1057_000138_movie_t-2.jpg", "titan_clip_1057_000138_movie_t-1.jpg", "titan_clip_1057_000138_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van", "environment_perception": "An urban street with a single narrow lane in the ego direction and no median runs between tall office buildings; the pavement is smooth and traffic is light. A white van is parked on the left side of the road, protruding slightly into the lane and narrowing the passage. Two pedestrians are on the right at a building entrance, walking away along the curb and briefly stepping at the edge of the roadway close to the ego path. Farther ahead, a dark car moves in the same direction and modestly sets the pace. Short bollards line the left sidewalk, and no other hazards are visible.", "hazard_reasoning": "There is a white van parked on the left side of the road. The parked van may obstruct the lane and reduce visibility, so the driver should manoeuvre around it safely."}
{"id": "train_02898", "split": "train", "clip_key": "2020-0131-135401_063018_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "063018"}, "frames": ["2020-0131-135401_063018_movie_t-3.jpg", "2020-0131-135401_063018_movie_t-2.jpg", "2020-0131-135401_063018_movie_t-1.jpg", "2020-0131-135401_063018_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road has two lanes in the ego direction with opposing traffic on the far right, no median, and smooth asphalt; traffic flows steadily at a moderate pace. A white van ahead in the ego lane continues straight at a stable speed, setting the ego car's pace. Farther ahead in the adjacent right lane, a dump truck proceeds straight without merging into the ego lane. A silver van to the right of the ego car travels parallel in the next lane, remaining alongside and not affecting the path. Parked vehicles line the left curb behind a guardrail, narrowing the shoulder but not the travel lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02899", "split": "train", "clip_key": "2020-0129-144857_017839_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "017839"}, "frames": ["2020-0129-144857_017839_movie_t-3.jpg", "2020-0129-144857_017839_movie_t-2.jpg", "2020-0129-144857_017839_movie_t-1.jpg", "2020-0129-144857_017839_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to merging vehicle", "environment_perception": "An urban multi-lane arterial with smooth dark pavement runs past mid-rise buildings, bordered by sidewalks and a hedge along the right; no median is visible and traffic moves at a moderate pace in the same direction. Ahead-left, a black sedan drifts right, changing from the left lane into the ego lane, likely to occupy the space in front of the ego vehicle. Directly ahead, a black van continues straight at steady speed and effectively sets the ego vehicle's pace. Other cars proceed farther ahead and in the left lane with regular gaps, not immediately affecting the ego path.", "hazard_reasoning": "There is a black sedan lane changing from the left lane to the ego lane. Because the sedan is merging into your lane, you need to yield to prevent a collision."}
{"id": "train_02900", "split": "train", "clip_key": "titan_clip_825_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_825_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_825_000198_movie_t-3_augB1.jpg", "titan_clip_825_000198_movie_t-2_augB1.jpg", "titan_clip_825_000198_movie_t-1_augB1.jpg", "titan_clip_825_000198_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban back street with a narrow two-way roadway lacks a center divider, shows smooth pavement, and has green edge lanes; no moving vehicles are visible and foot traffic is light. In the middle ahead, a man wearing a white shirt and beige pants, holding a black object, walks toward the ego vehicle and passes a woman moving the opposite way near the right side, briefly occupying the travel path. On the left by the FamilyMart frontage, two pedestrians walk away from the ego car along the curb. Farther ahead near mid-block, several people stand and cross the street between buildings in the ego vehicle's direction of travel. Traffic cones and planters line the right curb beside storefronts.", "hazard_reasoning": "A man wearing a white shirt and beige pants, holding a black object in one hand, is walking in the middle of the street toward the ego-car and passing a woman walking in the opposite direction. The driver should slow down because the pedestrian in the roadway may move unpredictably and pose a collision risk."}
{"id": "train_02901", "split": "train", "clip_key": "titan_clip_305_000786_movie", "source": {"subset": "titan", "scenario": "clip_305", "frame": "000786"}, "frames": ["titan_clip_305_000786_movie_t-3.jpg", "titan_clip_305_000786_movie_t-2.jpg", "titan_clip_305_000786_movie_t-1.jpg", "titan_clip_305_000786_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of cones on the left", "environment_perception": "A narrow urban side street with block-paved surface forms a single shared lane with no divider, and traffic is light. Cones and signs line both curbs, and pavement appears dry and intact. A white van is stopped along the right edge with its rear door open, protruding slightly into the lane and narrowing the passage ahead of the ego vehicle. Several pedestrians are ahead in the roadway near the center, walking slowly away and potentially occupying the ego path. On the left side, a red cone indicating no stopping stands with accompanying no-parking signage, and similar prohibitions appear intermittently along the street. No oncoming vehicles are visible.", "hazard_reasoning": "There is a red cone indicating no stopping, on the left side of the road. The cone signals a restricted area ahead, so the driver should be aware and avoid that section to maintain safe clearance."}
{"id": "train_02902", "split": "train", "clip_key": "titan_clip_1333_000354_movie", "source": {"subset": "titan", "scenario": "clip_1333", "frame": "000354"}, "frames": ["titan_clip_1333_000354_movie_t-3.jpg", "titan_clip_1333_000354_movie_t-2.jpg", "titan_clip_1333_000354_movie_t-1.jpg", "titan_clip_1333_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shopping street with a single narrow shared lane runs under an elevated rail on the right; the interlocking-brick pavement is smooth, there is no divider, and motor traffic is light while pedestrian activity is moderate. On the left near the ego vehicle, a man in a white shirt walks in the roadway toward the car because the sidewalk is blocked, so he may enter the ego path. Ahead along the right edge, several patrons queue at a takeout window and occasionally shuffle forward, protruding into the lane and narrowing usable space. Farther ahead at the cross street, a pedestrian crosses from right to left in front of the ego's path. Bicycles and shop signboards line the left, adding roadside obstacles.", "hazard_reasoning": "There is a man wearing a white shirt, walking on the left side of the road, towards the ego car, because the sidewalk is blocked. The driver should carefully manoeuvre around him to avoid a collision."}
{"id": "train_02903", "split": "train", "clip_key": "2020-0203-114632_034478_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "034478"}, "frames": ["2020-0203-114632_034478_movie_t-3.jpg", "2020-0203-114632_034478_movie_t-2.jpg", "2020-0203-114632_034478_movie_t-1.jpg", "2020-0203-114632_034478_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with stopped van", "environment_perception": "An urban commercial street runs through a two-way road with one lane in each direction separated by painted double white lines; the pavement is dry and traffic is light. A white van directly ahead in the ego lane is stopped, holding the ego car at a standstill. An oncoming city bus moves slowly in the right-side lane by the curb and does not enter the ego path. Pedestrians walk along both sidewalks behind railings and stay clear of the roadway. A speed-limit 50 sign and a no-parking sign are visible on the left, and an overhead blue guide sign indicates upcoming routes.", "hazard_reasoning": "There is a white van stopped in front of the ego car. Stop to avoid collision with the stopped van."}
{"id": "train_02904", "split": "train", "clip_key": "2020-0226-140503_059279_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "059279"}, "frames": ["2020-0226-140503_059279_movie_t-3.jpg", "2020-0226-140503_059279_movie_t-2.jpg", "2020-0226-140503_059279_movie_t-1.jpg", "2020-0226-140503_059279_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "An urban commercial street with a single narrow lane bounded by white edge lines has dry pavement and light, slow traffic. Ahead in the ego lane, a white van and another car are stopped near the end of the block, constraining the ego vehicle's pace. On the right side, a pedestrian carrying a backpack walks away from the ego car along the curbside by the bollards, staying out of the lane. On the left near the curb, another pedestrian stands close to the roadway and could step toward the lane. Several other pedestrians move along both sidewalks but remain separated from traffic. A large 20 marking is painted on the road surface.", "hazard_reasoning": "There is a pedestrian carrying a backpack, walking on the right side of the road, away from the ego car. The pedestrian may step onto the roadway unexpectedly, so drivers should be cautious to maintain safe distance and speed."}
{"id": "train_02905", "split": "train", "clip_key": "2020-0206-101736_033852_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "033852"}, "frames": ["2020-0206-101736_033852_movie_t-3.jpg", "2020-0206-101736_033852_movie_t-2.jpg", "2020-0206-101736_033852_movie_t-1.jpg", "2020-0206-101736_033852_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban arterial with two lanes in our direction runs alongside a metal fence median separating oncoming lanes to the right; the pavement looks smooth and traffic is light as vehicles queue at a signalized intersection. Ahead in the ego lane, a white sedan is stopped for the red traffic light, holding the ego vehicle's position. To the left, a silver minivan slightly ahead waits in the adjacent same-direction lane at the same light. Across the median, a few pedestrians walk through the crosswalk on the oncoming side. Overhead signals facing our direction display solid red.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, because of the red traffic lights. You should stop to avoid colliding with it and obey the traffic signal."}
{"id": "train_02906", "split": "train", "clip_key": "2020-0203-114632_018718_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "018718"}, "frames": ["2020-0203-114632_018718_movie_t-3.jpg", "2020-0203-114632_018718_movie_t-2.jpg", "2020-0203-114632_018718_movie_t-1.jpg", "2020-0203-114632_018718_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban signalized intersection on a two-way road has one lane in each direction and a red-painted bicycle lane. Pavement is clean and dry, and the ego approach is stopped while cross-street flow is moderate. A cyclist waits directly ahead in the ego lane at the stop line because the light is red, holding the ego vehicle's position. Multiple cyclists on the cross street ride across the zebra from right to left, moving through their green and crossing the ego path. Several pedestrians stream across the crosswalk from both sides while the ego approach remains stopped.", "hazard_reasoning": "A cyclist is stopped in front of the ego car in the ego lane, because of a red traffic light. Stop the vehicle to avoid colliding with the cyclist who is halted directly ahead."}
{"id": "train_02907", "split": "train", "clip_key": "titan_clip_351_000078_movie", "source": {"subset": "titan", "scenario": "clip_351", "frame": "000078"}, "frames": ["titan_clip_351_000078_movie_t-3.jpg", "titan_clip_351_000078_movie_t-2.jpg", "titan_clip_351_000078_movie_t-1.jpg", "titan_clip_351_000078_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "A narrow urban two-way street with one lane each direction and no median runs between mid-rise buildings; the pavement is smooth and traffic is light, but the lane is constricted by roadside activity. A large box truck is stopped on the left with its rear door open and goods and cones on the roadway, being unloaded and partially blocking the ego lane, so it constrains the ego vehicle's pace. A worker near the open truck moves around the cones and may step toward the lane as unloading continues. A silver van sits parked to the right in a building driveway, remaining stationary and outside the travel way. Far ahead, an oncoming car proceeds in its lane, relevant because the road is narrowed.", "hazard_reasoning": "There is a silver truck parked on the right side of the road, because it is being unloaded. The parked truck unloading on the right side of the road may block part of your path and obstruct visibility, so you should manoeuvre carefully around it to maintain safe clearance."}
{"id": "train_02908", "split": "train", "clip_key": "titan_clip_856_000072_movie", "source": {"subset": "titan", "scenario": "clip_856", "frame": "000072"}, "frames": ["titan_clip_856_000072_movie_t-3.jpg", "titan_clip_856_000072_movie_t-2.jpg", "titan_clip_856_000072_movie_t-1.jpg", "titan_clip_856_000072_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street has a single narrow shared lane with block-paved surface and a zebra crosswalk in the foreground; there is no median, and no motor vehicles are visible, so vehicle flow is light while pedestrian activity is heavy. On the right at the crosswalk, a group wearing black pants and black T-shirts walks away from the ego vehicle in the roadway, jaywalking near the crosswalk and occupying part of the lane. Ahead along the left edge, two pedestrians walk away in the same direction near the lane boundary, close to the ego path. Farther ahead in the center, several other pedestrians walk and cross casually, keeping the lane crowded. A roadside sign prohibits parking, and shops line both sides.", "hazard_reasoning": "There are a group of pedestrians wearing black pants and black t-shirts, and walking on the right side of the road, away from the ego car, because they are jaywalking near a pedestrian crosswalk. The driver should slow down because jaywalking pedestrians may unexpectedly enter the vehicle's path."}
{"id": "train_02909", "split": "train", "clip_key": "2020-0127-132751_069215_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "069215"}, "frames": ["2020-0127-132751_069215_movie_t-3.jpg", "2020-0127-132751_069215_movie_t-2.jpg", "2020-0127-132751_069215_movie_t-1.jpg", "2020-0127-132751_069215_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction curves gently right, bordered by a right-side guardrail and mid-rise buildings; the pavement is smooth and traffic is light but grows denser ahead. A white van directly ahead in the ego lane slows because of traffic congestion ahead, constraining the ego vehicle's pace. Farther ahead, several cars in the same direction bunch into a slow queue along the curve. Overhead lane-use signs indicate the left lane proceeds straight while the right lane turns or exits right. No obstacles or work zones are visible, and visibility remains clear under overcast skies.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to match the reduced speed and maintain a safe following distance."}
{"id": "train_02910", "split": "train", "clip_key": "2020-0205-103411_085425_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "085425"}, "frames": ["2020-0205-103411_085425_movie_t-3.jpg", "2020-0205-103411_085425_movie_t-2.jpg", "2020-0205-103411_085425_movie_t-1.jpg", "2020-0205-103411_085425_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial is shown with three same-direction lanes and opposing lanes to the right, no physical median, and smooth pavement; traffic is moderate to heavy as a queue forms at a signalized intersection ahead. A white sedan directly ahead in the ego lane slows because of congestion, constraining the ego car's pace. In the adjacent lanes, a white minivan and a dump truck slightly to the right also decelerate toward the line of vehicles, remaining ahead of the ego vehicle. On the far right, oncoming cars proceed through their lanes, separated only by markings, and pass the intersection without interacting with the ego lane. An overhead guide sign and a pedestrian overpass span the road as the vehicles approach the light.", "hazard_reasoning": "There is a white sedan slowing down ahead of the ego-car, in the ego lane, because of traffic congestion ahead. You should slow down to adjust speed and maintain a safe distance due to the congestion."}
{"id": "train_02911", "split": "train", "clip_key": "titan_clip_691_000060_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_691_000060_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_691_000060_movie_t-3_augB1.jpg", "titan_clip_691_000060_movie_t-2_augB1.jpg", "titan_clip_691_000060_movie_t-1_augB1.jpg", "titan_clip_691_000060_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single lane and no median runs between buildings; the pavement is smooth and traffic is light with no moving vehicles visible. Ahead in the middle of the road, a lady wearing a yellow shirt and black pants carries a handbag and walks away from the ego car because vans parked along the left sidewalk block the footpath, placing her in the ego lane and constraining available space. Beside her, a man with a backpack walks in the same direction near the lane center, also occupying the ego path. Several white vans are parked along the left curb, encroaching on the sidewalk and acting as static obstacles. No signals or notable signs are visible, and there is no oncoming traffic.", "hazard_reasoning": "There is a lady, wearing a yellow shirt and black pants, carrying a handbag, walking, in the middle of the road, away from the ego car, because of parked vehicles on the sidewalk. The driver should slow down to avoid potential collision with her as she walks in the roadway."}
{"id": "train_02912", "split": "train", "clip_key": "titan_clip_1184_000024_movie", "source": {"subset": "titan", "scenario": "clip_1184", "frame": "000024"}, "frames": ["titan_clip_1184_000024_movie_t-3.jpg", "titan_clip_1184_000024_movie_t-2.jpg", "titan_clip_1184_000024_movie_t-1.jpg", "titan_clip_1184_000024_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way road without a centerline runs between buildings, the pavement smooth and dry, with light, slow traffic and no oncoming vehicles visible. On the left near the ego, a pedestrian in light clothing stands partly in the lane and steps diagonally from the curb, so they may enter the ego path. Farther ahead along the middle of the lane, another pedestrian walks away from the camera, constraining the available space. On the right shoulder by a row of cones, a pedestrian in a blue shirt stands close to the travel lane beside a vehicle they are attending. Ahead in the same direction, a small white truck waits near the left curb, further narrowing the passage. Cones line the right-hand fence as a work-zone barrier, and several bicycles are parked along the left sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, standing on the right side of the road, because they are attending their parked vehicle. They may step into the traffic lane unexpectedly, so the driver should carefully maneuver around the pedestrian to avoid a collision."}
{"id": "train_02913", "split": "train", "clip_key": "titan_clip_451_000108_movie", "source": {"subset": "titan", "scenario": "clip_451", "frame": "000108"}, "frames": ["titan_clip_451_000108_movie_t-3.jpg", "titan_clip_451_000108_movie_t-2.jpg", "titan_clip_451_000108_movie_t-1.jpg", "titan_clip_451_000108_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around parked van.", "environment_perception": "An urban two-way street with no median and smooth pavement runs between midrise buildings, and traffic is light. A black van is parked along the left edge in the ego lane ahead, stationary and partially blocking the lane. Farther ahead, two motorcycles travel in the same direction toward the distance along the center of the roadway, continuing steadily without constraining the ego vehicle. On the right sidewalk outside a storefront, a pedestrian stands near the curb and walks slowly along the frontage close to the roadway. A 30 km/h speed limit sign is posted on the left.", "hazard_reasoning": "There's a black van parked on the left side of the road, in the ego lane. The driver should carefully manoeuvre around the stationary van to avoid collision or interference with traffic flow."}
{"id": "train_02914", "split": "train", "clip_key": "2020-0205-103411_019930_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "019930"}, "frames": ["2020-0205-103411_019930_movie_t-3.jpg", "2020-0205-103411_019930_movie_t-2.jpg", "2020-0205-103411_019930_movie_t-1.jpg", "2020-0205-103411_019930_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection with zebra crossings and a low fence divider along the right edge; pavement is clean and traffic is moderate. Ahead in the ego lane, a black van slows and makes a right turn at the intersection, matching the right-turn arrow painted in this lane. To the right, a silver small car in the adjacent same-direction lane moves forward toward the junction alongside but does not merge. From the left side of the intersection, a blue bus travels left-to-right on the cross street, passing in front of the ego lane. Other cars proceed through the junction on both streets without abrupt maneuvers.", "hazard_reasoning": "There is a black van turning right at the intersection, in the ego-car's lane, because of the right turn symbol. The van's maneuver may slow you or require a quick response, so follow the vehicle ahead to maintain a safe distance."}
{"id": "train_02915", "split": "train", "clip_key": "titan_clip_1359_000216_movie", "source": {"subset": "titan", "scenario": "clip_1359", "frame": "000216"}, "frames": ["titan_clip_1359_000216_movie_t-3.jpg", "titan_clip_1359_000216_movie_t-2.jpg", "titan_clip_1359_000216_movie_t-1.jpg", "titan_clip_1359_000216_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrians", "environment_perception": "An urban commercial street with a single narrow lane curves left between buildings; there is no median and the pavement is smooth, with light traffic. A group of pedestrians wearing black and white shirts walks from the right sidewalk onto the crosswalk toward the ego vehicle, entering the ego lane. A white van ahead in the same lane moves slowly around the bend, constraining the pace. A man on the left beside a row of parked bicycles walks along the sidewalk and stays clear of the roadway. A speed-limit 40 sign stands on the right, and bollards and parked bicycles line the edges without obstructing the lane.", "hazard_reasoning": "There is a group of pedestrians wearing black and white shirts, and walking on the crosswalk, towards the ego car. These pedestrians are entering the vehicle's path at the crosswalk, so the driver should yield to prevent a collision."}
{"id": "train_02916", "split": "train", "clip_key": "titan_clip_1139_000204_movie", "source": {"subset": "titan", "scenario": "clip_1139", "frame": "000204"}, "frames": ["titan_clip_1139_000204_movie_t-3.jpg", "titan_clip_1139_000204_movie_t-2.jpg", "titan_clip_1139_000204_movie_t-1.jpg", "titan_clip_1139_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with no median and smooth pavement runs between apartment and shop buildings, and traffic is light. A small box truck ahead in the same direction is stopped near the left edge, constraining the ego vehicle's pace. A man in a white T-shirt and black pants walks toward the ego along the left side of the road, close to the travel lane and possibly entering the path. On the right, a woman stands near the curb by a shop, watching the roadway but remaining off the carriageway. A parked van protrudes from the left shoulder near the camera, further narrowing the approach.", "hazard_reasoning": "There is a man wearing a white T-shirt and black pants and walking on the left side of the road, toward the ego car. The pedestrian is walking toward the ego vehicle on the road, so the driver should manoeuvre carefully to avoid hitting him."}
{"id": "train_02917", "split": "train", "clip_key": "titan_clip_830_000102_movie", "source": {"subset": "titan", "scenario": "clip_830", "frame": "000102"}, "frames": ["titan_clip_830_000102_movie_t-3.jpg", "titan_clip_830_000102_movie_t-2.jpg", "titan_clip_830_000102_movie_t-1.jpg", "titan_clip_830_000102_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist on right lane", "environment_perception": "An urban two-way street with brick paving and no median runs through a shopping district, and traffic is light. The ego vehicle travels in the left-side lane, and the surface is mostly smooth with a few patched sections. On the right side ahead, a cyclist wearing a striped shirt and blue pants rides toward the ego car in the oncoming direction near the crosswalk, reducing clearance as they pass. Farther ahead in the same direction, a small box truck proceeds away along the center of the lane beyond the intersection. A person at the far crosswalk on the right pauses near the curb and may step into the roadway. A circular speed-limit sign is posted on the left. Parked bicycles and shop signs line the right curb but remain outside the travel lane.", "hazard_reasoning": "There is a cyclist wearing a striped shirt and blue pants, cycling on the right side of the road, towards the ego car. The cyclist's position and trajectory suggest they may soon enter the vehicle's path, so the driver should be aware."}
{"id": "train_02918", "split": "train", "clip_key": "2020-0226-101332_002413_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "002413"}, "frames": ["2020-0226-101332_002413_movie_t-3.jpg", "2020-0226-101332_002413_movie_t-2.jpg", "2020-0226-101332_002413_movie_t-1.jpg", "2020-0226-101332_002413_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way road with one lane in each direction climbs gently uphill, the pavement damp and intact, with light to moderate flow and no median beyond a painted center line; a hatched shoulder borders the left curb. No black van is parked in the left lane; the left side shows only a marked buffer away from the travel lane. A small dark car ahead in the ego lane proceeds uphill at a steady pace, loosely setting the ego vehicle's following distance. On the right, a white minibus approaches in the oncoming lane and continues straight while staying well within its lane. Farther ahead, a box truck in the opposing lane follows the bus toward the camera as additional cars move in both directions without interference.", "hazard_reasoning": "There is a black van parked in the left lane, away from the ego car, because there is a parking spot. The parked van occupies the travel lane and may force sudden lane adjustments; following the vehicle ahead helps maintain safe lane positioning and avoid collision."}
{"id": "train_02919", "split": "train", "clip_key": "2020-0214-102601_083631_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "083631"}, "frames": ["2020-0214-102601_083631_movie_t-3.jpg", "2020-0214-102601_083631_movie_t-2.jpg", "2020-0214-102601_083631_movie_t-1.jpg", "2020-0214-102601_083631_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban two-lane two-way street with a single yellow centerline and dry pavement is shown, with light traffic temporarily queued at a signalized intersection ahead. A black SUV directly ahead in the ego lane is stopped with its brake lights on at the red light, holding the ego vehicle in place. Farther ahead, a large box truck in the same lane remains stationary at the junction, setting the pace for the queue. The opposite lane appears clear with no oncoming vehicles passing at this moment.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, in front of the ego car, because of red traffic lights. The driver should stop immediately to avoid a collision with the halted SUV."}
{"id": "train_02920", "split": "train", "clip_key": "titan_clip_1168_000192_movie", "source": {"subset": "titan", "scenario": "clip_1168", "frame": "000192"}, "frames": ["titan_clip_1168_000192_movie_t-3.jpg", "titan_clip_1168_000192_movie_t-2.jpg", "titan_clip_1168_000192_movie_t-1.jpg", "titan_clip_1168_000192_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down and watch for the pedestrian", "environment_perception": "An urban shopping street with a single narrow lane and brick paving, no divider, shows light vehicle traffic as the ego car moves slowly. On the right side of the lane, a pedestrian wearing blue pants and carrying a handbag walks away from the ego vehicle along the edge of the roadway. Ahead in the lane, several pedestrians walk away and drift across the path, slowing the ego vehicle. A white van is parked on the left with its rear hatch open and black parts on the ground, protruding into the lane and narrowing the available space.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a handbag, walking on the right side of the lane, away from the ego car. Therefore, the pedestrian may unexpectedly step into the lane, so the driver should slow down and remain vigilant to avoid a collision."}
{"id": "train_02921", "split": "train", "clip_key": "titan_clip_843_000378_movie", "source": {"subset": "titan", "scenario": "clip_843", "frame": "000378"}, "frames": ["titan_clip_843_000378_movie_t-3.jpg", "titan_clip_843_000378_movie_t-2.jpg", "titan_clip_843_000378_movie_t-1.jpg", "titan_clip_843_000378_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban side street with smooth pavement leads to a small intersection marked by a zebra crosswalk; traffic is light. Two pedestrians, both wearing flowered shirts and one carrying a handbag, cross from right to left immediately in front of the ego vehicle within the crosswalk and occupy its path. Farther ahead, a few other pedestrians move across the side street near the building corner but stay outside the ego lane. A white van and a small car stand along the right curb ahead near the trees, narrowing roadside space. Buildings closely flank the road, creating a slightly constrained view at the corner.", "hazard_reasoning": "There are two pedestrians, both wearing flowered shirts and one carrying a handbag, crossing the street from right to left in front of the ego car, in a marked crosswalk. The driver should stop to yield to the pedestrians and avoid a collision."}
{"id": "train_02922", "split": "train", "clip_key": "2020-0228-102841_004407_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "004407"}, "frames": ["2020-0228-102841_004407_movie_t-3.jpg", "2020-0228-102841_004407_movie_t-2.jpg", "2020-0228-102841_004407_movie_t-1.jpg", "2020-0228-102841_004407_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around barriers", "environment_perception": "An urban intersection beside an elevated railway comes into view, with a single-lane approach and rough patched pavement; cross-street flow is moderate. The ego vehicle slows to a stop at barriers where construction work blocks the way ahead. A black sedan crosses from left to right on the cross street, occupying the path across the closed junction and dictating the wait. A white van moves along the same cross street beyond the barricades. A construction truck is parked on the right inside the fenced work zone with equipment and materials piled nearby. A pedestrian walks near the left-hand railing but stays outside the ego lane. A blue sign ahead directs traffic to turn left around the work site, reinforced by cones and temporary fencing.", "hazard_reasoning": "There is construction work in front of the ego car. The construction barriers and cones obstruct part of the roadway, so the driver should carefully maneuver around them to avoid collisions."}
{"id": "train_02923", "split": "train", "clip_key": "titan_clip_219_000738_movie", "source": {"subset": "titan", "scenario": "clip_219", "frame": "000738"}, "frames": ["titan_clip_219_000738_movie_t-3.jpg", "titan_clip_219_000738_movie_t-2.jpg", "titan_clip_219_000738_movie_t-1.jpg", "titan_clip_219_000738_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow one-lane urban street between tall buildings has brick-like pavement, no median, and light same-direction traffic moving away ahead. In front of the ego car at a marked crosswalk, two children carrying backpacks walk away from the ego vehicle along the lane, occupying its path and setting the pace. Far ahead in the same lane, a small white van proceeds straight and gradually pulls away without affecting the ego vehicle. A bicycle is parked on the left sidewalk and does not intrude into the roadway.", "hazard_reasoning": "There are two children carrying backpacks and walking in front of the ego car, away from the ego car. The driver should slow down because children walking close to the vehicle may unexpectedly change direction or step into the lane."}
{"id": "train_02924", "split": "train", "clip_key": "titan_clip_489_000204_movie", "source": {"subset": "titan", "scenario": "clip_489", "frame": "000204"}, "frames": ["titan_clip_489_000204_movie_t-3.jpg", "titan_clip_489_000204_movie_t-2.jpg", "titan_clip_489_000204_movie_t-1.jpg", "titan_clip_489_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the construction worker", "environment_perception": "An urban two-way street with one narrow lane per direction and no median runs between buildings; the pavement is smooth and traffic is light as the vehicle continues in the left lane. On the right ahead, a small work truck is stopped along the curb and slightly encroaches into the lane, narrowing the passage. Beside it on the right, a person wearing a green reflector jacket and a helmet stands due to construction work there, remaining near the truck and facing the roadway. On the left sidewalk, a pedestrian moves away behind a green railing and stays clear of the lane. Bicycles line the left railing and no other moving vehicles are close.", "hazard_reasoning": "The person wearing a green reflector jacket and a helmet is standing on the right side of the road because of construction work on the right. The driver should carefully manoeuvre around the construction worker to maintain safe distance and avoid collision."}
{"id": "train_02925", "split": "train", "clip_key": "2020-0203-114632_077271_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "077271"}, "frames": ["2020-0203-114632_077271_movie_t-3.jpg", "2020-0203-114632_077271_movie_t-2.jpg", "2020-0203-114632_077271_movie_t-1.jpg", "2020-0203-114632_077271_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "On an urban commercial street in Japan, the ego car travels in the left lane of a two-lane two-way road with a solid center line and smooth pavement; overall flow is slow due to a queue ahead. A gray van directly ahead in the ego lane is stopped because of traffic congestion ahead, holding the ego vehicle. Farther ahead in the same lane, a large construction truck is also stationary in the line, limiting forward visibility and progress. Oncoming cars pass intermittently in the opposite lane without affecting the ego vehicle.", "hazard_reasoning": "There is a gray van stopped in front of the ego car because of traffic congestion ahead. Driver should stop to maintain a safe distance from the stopped van caused by traffic congestion."}
{"id": "train_02926", "split": "train", "clip_key": "2020-0207-101955_006124_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "006124"}, "frames": ["2020-0207-101955_006124_movie_t-3.jpg", "2020-0207-101955_006124_movie_t-2.jpg", "2020-0207-101955_006124_movie_t-1.jpg", "2020-0207-101955_006124_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings, with a planted median and fence on the right separating opposing traffic; the pavement is dry and traffic is moderate. A white truck with a green tarp drives ahead in the ego lane, moving away at a steady speed and effectively setting the pace. To its left, a white minivan in the adjacent lane continues straight slightly ahead of the ego vehicle without changing lanes. Farther ahead in the left lane, a dark car proceeds in the same direction. An overhead blue guide sign is visible, and a large yellow 50 marking on the roadway indicates a 50 speed limit. A yellow box truck is stopped at the curb on the far left.", "hazard_reasoning": "There is a white truck with a green tarp driving in the ego lane away from the ego car. The truck occupies your lane and may change lanes or slow unexpectedly, requiring you to stay alert and maintain a safe following distance."}
{"id": "train_02927", "split": "train", "clip_key": "2020-0218-151547_020506_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "020506"}, "frames": ["2020-0218-151547_020506_movie_t-3.jpg", "2020-0218-151547_020506_movie_t-2.jpg", "2020-0218-151547_020506_movie_t-1.jpg", "2020-0218-151547_020506_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of merging SUV", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with a guardrail on the right and a planted divider and fence on the left; the pavement is dry and smooth, and traffic flows at a moderate pace. A small flatbed truck directly ahead in the ego lane continues steadily and currently sets the pace. To its left, a black SUV in the left lane starts moving right into the ego lane, merging ahead of the truck and reducing the available gap. On the far left, beyond the divider, several buses and a white van travel parallel on a separate side lane and remain isolated from the ego path. Farther ahead, scattered same-direction cars proceed beneath overhead signs.", "hazard_reasoning": "There is a black SUV in the left lane, lane changing from the left lane into the ego lane. The driver should be aware of its merging maneuver to avoid a potential collision."}
{"id": "train_02928", "split": "train", "clip_key": "2020-0225-145150_041102_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "041102"}, "frames": ["2020-0225-145150_041102_movie_t-3.jpg", "2020-0225-145150_041102_movie_t-2.jpg", "2020-0225-145150_041102_movie_t-1.jpg", "2020-0225-145150_041102_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban street with mid-rise buildings has two lanes in the ego direction and no median, the pavement is dry, and traffic moves slowly near an intersection. A small blue truck is stopped directly ahead in the ego lane, holding the ego car at the line. In the lane to the left, a large white box truck slightly ahead rolls forward through the junction at low speed, setting the pace for that lane. Alongside on the left rear quarter, a silver van creeps forward in the adjacent lane, limiting any immediate lane change by the ego vehicle. A curb and metal fence line the right edge of the roadway.", "hazard_reasoning": "There is a blue truck stopped in front of the ego car, in the ego lane. The driver must stop to avoid colliding with the stationary vehicle ahead."}
{"id": "train_02929", "split": "train", "clip_key": "2020-0131-135401_014957_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "014957"}, "frames": ["2020-0131-135401_014957_movie_t-3.jpg", "2020-0131-135401_014957_movie_t-2.jpg", "2020-0131-135401_014957_movie_t-1.jpg", "2020-0131-135401_014957_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane per direction and no median leads to a signalized intersection; the pavement is smooth and traffic is light as vehicles slow toward the junction. Ahead in the ego lane, a black hatchback is stopped for the red light, holding the ego vehicle at the line. To the right in the oncoming lane, a few cars pass through the intersection and continue by, not affecting the ego path. At the right curb, a small pickup is parked in a side lane, remaining outside the travel lane, and a three-wheeled scooter stands on the left sidewalk. The signal for the ego approach shows red.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid rear-ending the stopped vehicle."}
{"id": "train_02930", "split": "train", "clip_key": "2020-0129-105040_102020_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "102020"}, "frames": ["2020-0129-105040_102020_movie_t-3.jpg", "2020-0129-105040_102020_movie_t-2.jpg", "2020-0129-105040_102020_movie_t-1.jpg", "2020-0129-105040_102020_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane divided road has three lanes in the ego direction with a fenced median on the right and smooth pavement, and traffic is moderate bunching toward an intersection. A small white truck directly ahead in the ego lane moves away but slows toward the junction, setting the ego vehicle's pace. In the left lane slightly ahead, a gray minivan proceeds straight at a similar speed while remaining in its lane near the ego path. On the near left edge, a motorcyclist accelerates forward alongside and then ahead within the left lane, creating a close lateral presence. The traffic signal ahead shows red with a short queue under it.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02931", "split": "train", "clip_key": "2020-0220-102630_018005_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "018005"}, "frames": ["2020-0220-102630_018005_movie_t-3.jpg", "2020-0220-102630_018005_movie_t-2.jpg", "2020-0220-102630_018005_movie_t-1.jpg", "2020-0220-102630_018005_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with no median and dry pavement carries heavy, mostly stop-and-go traffic. Buildings line both sides and only same-direction flow is visible. A white sedan directly ahead in the ego lane is stopped because congestion ahead blocks the lane, holding the ego vehicle in place. To the right, a queue of vans and cars in the adjacent same-direction lane inches forward alongside, occupying the space next to the ego car. Farther ahead, a tall box truck in the flow is also stationary, further compressing traffic and obscuring the view. A 50 km/h speed limit sign stands on the left.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, because of traffic congestion ahead. The driver must stop to avoid rear-ending the halted vehicle in heavy traffic."}
{"id": "train_02932", "split": "train", "clip_key": "titan_clip_1220_000210_movie", "source": {"subset": "titan", "scenario": "clip_1220", "frame": "000210"}, "frames": ["titan_clip_1220_000210_movie_t-3.jpg", "titan_clip_1220_000210_movie_t-2.jpg", "titan_clip_1220_000210_movie_t-1.jpg", "titan_clip_1220_000210_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "A narrow urban back street with a single left-hand lane runs between tall buildings, with smooth pavement and light traffic. A gray-and-blue delivery truck is parked on the left side with its rear open, jutting into the lane and narrowing the path for the ego vehicle. Far ahead in the same direction, a small white van continues away under the archway, mildly setting the pace. Cars sit in recessed parking bays on the right, and a bicycle is parked against the left wall, further tightening the roadside space. No prominent signals or posted speeds are visible, and there are no notable changes in traffic flow during the scene.", "hazard_reasoning": "There is a gray-and-blue truck parked on the left side of the road. You should maneuver around the obstruction carefully to avoid collision in the narrow lane with limited visibility."}
{"id": "train_02933", "split": "train", "clip_key": "titan_clip_530_000540_movie", "source": {"subset": "titan", "scenario": "clip_530", "frame": "000540"}, "frames": ["titan_clip_530_000540_movie_t-3.jpg", "titan_clip_530_000540_movie_t-2.jpg", "titan_clip_530_000540_movie_t-1.jpg", "titan_clip_530_000540_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian", "environment_perception": "A narrow urban two-way street with smooth asphalt and green edge lanes runs straight between buildings, lacking a center divider; traffic is light with no moving vehicles visible. Ahead on the right, a pedestrian in a striped T-shirt walks away along the edge of the roadway, remaining near the curb but possibly stepping into the lane. At the near right, another man stands beside a parked black SUV, stationary and close to the carriageway where he could move into view. Parked vehicles on the right and a motorbike on the left slightly narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a striped T-shirt and walking on the right side of the road, away from the ego car. The pedestrian's proximity to the roadway means they could unexpectedly enter the lane, so the driver should be aware of the pedestrian and ready to react."}
{"id": "train_02934", "split": "train", "clip_key": "2020-0129-105040_042111_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "042111"}, "frames": ["2020-0129-105040_042111_movie_t-3.jpg", "2020-0129-105040_042111_movie_t-2.jpg", "2020-0129-105040_042111_movie_t-1.jpg", "2020-0129-105040_042111_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway runs through a covered sound-barrier section with two same-direction lanes, metal railings along both sides, and dry pavement; traffic flows moderately but slows near a visible queue ahead. A white truck in the ego lane directly ahead decelerates because of the congestion and governs the ego car's speed. Far ahead, a cluster of cars in both lanes creeps under the next span, forming the backup that causes the slowdown. A few vehicles in the adjacent right lane move slightly faster before braking as they reach the queue. Overhead gantries and closely spaced columns limit forward visibility, with no other hazards apparent.", "hazard_reasoning": "There is a white truck slowing in the ego lane, because of the traffic congestion ahead, in front of the ego car. The driver should slow down to maintain a safe distance and avoid a potential rear-end collision under this scenario."}
{"id": "train_02935", "split": "train", "clip_key": "2020-0220-151845_054922_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "054922"}, "frames": ["2020-0220-151845_054922_movie_t-3.jpg", "2020-0220-151845_054922_movie_t-2.jpg", "2020-0220-151845_054922_movie_t-1.jpg", "2020-0220-151845_054922_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial runs under an elevated viaduct, with two same-direction lanes and a concrete barrier on the left; the pavement is dry and traffic is heavy and slow. Directly ahead, a red flatbed truck in the ego lane slows because congestion forms ahead, constraining the ego vehicle's pace. To the right, a queue of cars including a black sedan travels slowly in the adjacent lane alongside the ego vehicle. At the far right edge near the camera, a light van creeps forward in the outer lane beside the queue. An overhead destination sign with distances is visible ahead.", "hazard_reasoning": "There is a red truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a potential rear-end collision due to the slowing traffic."}
{"id": "train_02936", "split": "train", "clip_key": "2020-0214-145407_008705_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "008705"}, "frames": ["2020-0214-145407_008705_movie_t-3.jpg", "2020-0214-145407_008705_movie_t-2.jpg", "2020-0214-145407_008705_movie_t-1.jpg", "2020-0214-145407_008705_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with left-hand traffic passes under a pedestrian overpass, the pavement smooth and dry, and overall flow moderate but bunching near a junction where lanes split. A white minivan directly ahead in the ego lane slows because congestion forms further forward, constraining our pace. A smaller silver minivan slightly ahead to the left proceeds at similar low speed in its lane without merging. On the far right, a white car in a right-turn lane creeps forward near the curb and stays out of the ego path.", "hazard_reasoning": "There is a white minivan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should reduce speed to maintain a safe following distance and avoid a rear-end collision under these congested conditions."}
{"id": "train_02937", "split": "train", "clip_key": "2020-0203-114632_034065_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "034065"}, "frames": ["2020-0203-114632_034065_movie_t-3.jpg", "2020-0203-114632_034065_movie_t-2.jpg", "2020-0203-114632_034065_movie_t-1.jpg", "2020-0203-114632_034065_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street runs between tall shops, with one lane in each direction divided by double white lines; the pavement is dry and traffic is moderate. A white van is stopped directly ahead in the ego lane, holding the ego vehicle. An oncoming city bus moves slowly past in the opposing right lane. Pedestrians crowd the left sidewalk and a person walking a bicycle lingers near the curb behind a guardrail. A 50 km/h speed-limit sign stands on the left, and an overhead blue direction board is visible ahead.", "hazard_reasoning": "There is a white van stopped in front of the ego car. The white van is blocking the lane ahead, so the driver must stop immediately to maintain a safe distance and prevent a collision."}
{"id": "train_02938", "split": "train", "clip_key": "2020-0127-132751_017017_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "017017"}, "frames": ["2020-0127-132751_017017_movie_t-3.jpg", "2020-0127-132751_017017_movie_t-2.jpg", "2020-0127-132751_017017_movie_t-1.jpg", "2020-0127-132751_017017_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road runs under an elevated expressway, with a dedicated left-turn lane and two through lanes on smooth asphalt. Traffic is heavy and slow in the through lanes with queues stretching ahead. A white hatchback directly ahead in the ego lane is stopped because of the congestion, holding the ego car. To the right, a large white van in the adjacent through lane waits nearly parallel to the ego vehicle, limiting any lane change to the right. Ahead-left, a white van in the left-turn lane creeps toward the turn and remains outside the ego path. Overhead lane-control signs show a left-turn arrow for the left lane and straight arrows for the center and right lanes.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of the traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle and maintain a safe following distance under these congested conditions."}
{"id": "train_02939", "split": "train", "clip_key": "2020-0214-102601_001346_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "001346"}, "frames": ["2020-0214-102601_001346_movie_t-3.jpg", "2020-0214-102601_001346_movie_t-2.jpg", "2020-0214-102601_001346_movie_t-1.jpg", "2020-0214-102601_001346_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential street is seen from a stopped vehicle on a two-way, two-lane road marked by a yellow center line, with smooth asphalt and no visible traffic throughout. Low white guardrails line the sidewalk, and a narrow driveway to a small shop sits opposite, flanked by vending machines and potted plants. No vehicles are ahead in the ego lane and no oncoming traffic appears, and there are no pedestrians or cyclists. No traffic signals or posted speed signs are visible, and no obstacles encroach on the roadway.", "hazard_reasoning": "No immediate hazards are present; maintain normal driving behavior."}
{"id": "train_02940", "split": "train", "clip_key": "titan_clip_894_000168_movie", "source": {"subset": "titan", "scenario": "clip_894", "frame": "000168"}, "frames": ["titan_clip_894_000168_movie_t-3.jpg", "titan_clip_894_000168_movie_t-2.jpg", "titan_clip_894_000168_movie_t-1.jpg", "titan_clip_894_000168_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of pedestrians hidden by the van", "environment_perception": "A narrow urban commercial street with an undivided carriageway and worn pavement shows light traffic while curbside stopping constricts the lane. On the left, a white van is parked at the curb among other delivery vehicles, reducing the available width for the ego vehicle. Far ahead near the centerline, a small truck approaches in the opposite direction through the gap between parked vehicles. On the right sidewalk, several pedestrians walk past storefronts close to the curb while remaining on the sidewalk.", "hazard_reasoning": "There is a white van parked on the left side of the road. This van can block the view of pedestrians stepping onto the roadway, creating a hidden hazard that requires caution."}
{"id": "train_02941", "split": "train", "clip_key": "2020-0214-145407_067437_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "067437"}, "frames": ["2020-0214-145407_067437_movie_t-3.jpg", "2020-0214-145407_067437_movie_t-2.jpg", "2020-0214-145407_067437_movie_t-1.jpg", "2020-0214-145407_067437_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light ahead", "environment_perception": "An urban multi-lane arterial runs straight between tall buildings, with two same-direction lanes and a low hedge median on the right; the pavement is dry and traffic is heavy and slow. Ahead in the ego lane, a white hatchback is stopped for the red traffic light, holding the ego vehicle. Farther ahead in the same lane, a small white van stands in the queue at the signal, maintaining the blockage. In the adjacent left lane, a white sedan beside the ego car creeps forward at walking pace, parallel to the queue. The traffic signal ahead shows red.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because of a red traffic light. The driver should stop to comply with the signal and avoid colliding with the halted vehicle."}
{"id": "train_02942", "split": "train", "clip_key": "2020-0220-102630_027125_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "027125"}, "frames": ["2020-0220-102630_027125_movie_t-3.jpg", "2020-0220-102630_027125_movie_t-2.jpg", "2020-0220-102630_027125_movie_t-1.jpg", "2020-0220-102630_027125_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes and no median shows dry, smooth pavement and slow, stop-and-go traffic. Directly ahead, a white box truck in the ego lane remains stopped due to congestion ahead, holding the ego vehicle. To the right, a smaller covered truck in the adjacent lane creeps forward and passes alongside, occupying the space that would otherwise allow a lane change. A narrow sidewalk with a metal guardrail lines the left edge near storefronts.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of the traffic congestion ahead. The driver should stop now to maintain a safe following distance and avoid a collision with the halted truck."}
{"id": "train_02943", "split": "train", "clip_key": "2020-0220-102630_000897_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "000897"}, "frames": ["2020-0220-102630_000897_movie_t-3.jpg", "2020-0220-102630_000897_movie_t-2.jpg", "2020-0220-102630_000897_movie_t-1.jpg", "2020-0220-102630_000897_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped van ahead", "environment_perception": "An urban arterial with at least two lanes in the ego direction has smooth pavement and no median; traffic flows lightly in the left lane while the right lane is queued. A large box truck immediately to the right is stopped in the right lane and sits alongside the ego vehicle as we pass. Farther ahead, a white van in the right lane is stopped due to congestion ahead, remaining stationary beside the moving left lane. A smaller truck at the near right edge also waits in the same queue, stationary next to the ego path. A posted 50 speed limit sign is visible ahead on roadside gantry hardware.", "hazard_reasoning": "A white van is stopped in the right lane, because of traffic congestion ahead. This stationary vehicle may require sudden braking or lane changes by following drivers, so maintaining awareness and reducing speed is advisable."}
{"id": "train_02944", "split": "train", "clip_key": "titan_clip_903_000396_movie", "source": {"subset": "titan", "scenario": "clip_903", "frame": "000396"}, "frames": ["titan_clip_903_000396_movie_t-3.jpg", "titan_clip_903_000396_movie_t-2.jpg", "titan_clip_903_000396_movie_t-1.jpg", "titan_clip_903_000396_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Yield to cyclist approaching on the right", "environment_perception": "In a quiet urban residential area, the ego vehicle proceeds on a narrow two-way road with no centerline, approaching a small intersection where the street bends left around a building; the pavement is smooth and traffic is light. On the right at the intersection, a cyclist wearing a white T-shirt rides out from the side street toward the ego car, moving into the ego vehicle's path. Just behind him, another cyclist with a front basket approaches from the same side street and slows near the corner. A 20 speed limit sign is posted on the building's corner. The building forms a partial blind corner on the right as the road curves.", "hazard_reasoning": "There is a cyclist wearing a white T-shirt, on the right side of an intersection, cycling towards the ego car. The cyclist is approaching from the right at the intersection and may enter the vehicle's path unexpectedly, so the driver should yield to avoid a collision."}
{"id": "train_02945", "split": "train", "clip_key": "titan_clip_114_000102_movie", "source": {"subset": "titan", "scenario": "clip_114", "frame": "000102"}, "frames": ["titan_clip_114_000102_movie_t-3.jpg", "titan_clip_114_000102_movie_t-2.jpg", "titan_clip_114_000102_movie_t-1.jpg", "titan_clip_114_000102_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van carefully", "environment_perception": "A narrow urban street with brick-pattern pavement and no median runs between tall buildings, functioning as a two-way road with light traffic. Ahead on the left, a white van is parked at the curb, narrowing the usable lane and briefly constraining the ego vehicle's path. Farther ahead in the same direction, a small white car continues along the lane at a modest speed, loosely setting the pace. On the right sidewalk by storefronts, a couple of pedestrians walk and stand near planters without stepping into the roadway. No salient signals or posted speed signs are visible.", "hazard_reasoning": "There is a white van parked on the left side of the road. The parked van narrows the driving lane and may obstruct the driver's path, so the driver should manoeuvre around it carefully."}
{"id": "train_02946", "split": "train", "clip_key": "2020-0206-142535_005127_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "005127"}, "frames": ["2020-0206-142535_005127_movie_t-3.jpg", "2020-0206-142535_005127_movie_t-2.jpg", "2020-0206-142535_005127_movie_t-1.jpg", "2020-0206-142535_005127_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of pylons ahead", "environment_perception": "An urban two-way street with a single narrow lane in each direction and no median stretches ahead; the pavement is clean and traffic is light. The ego vehicle continues in the left lane toward a signalized intersection, and pylons on the left side of the lane with temporary barriers narrow the edge. An oncoming white truck is visible far ahead in the opposing lane, moving straight toward the intersection while remaining in its lane. A dark car sits parked off the roadway in a recessed space on the right. Overhead traffic lights and a straight-ahead blue sign are visible at the intersection, and guardrails line both sidewalks.", "hazard_reasoning": "Pylons are on the left side of the lane. They may indicate upcoming construction or lane narrowing, so the driver should be aware to avoid colliding with them."}
{"id": "train_02947", "split": "train", "clip_key": "2020-0207-101955_080055_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "080055"}, "frames": ["2020-0207-101955_080055_movie_t-3.jpg", "2020-0207-101955_080055_movie_t-2.jpg", "2020-0207-101955_080055_movie_t-1.jpg", "2020-0207-101955_080055_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with smooth pavement runs alongside a sound barrier, with short posts separating carriageways; traffic is light but momentarily halted. A blue flatbed truck directly ahead in the ego lane is stopped and holds the ego vehicle, consistent with congestion ahead on the road. No other nearby road users are interacting with the ego vehicle. A round 50 speed-limit sign and a no-stopping sign are visible on the left.", "hazard_reasoning": "There is a blue truck stopped in the ego lane because of traffic congestion ahead on the road. Drivers must stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_02948", "split": "train", "clip_key": "titan_clip_701_000282_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_701_000282_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_701_000282_movie_t-3_augB1.jpg", "titan_clip_701_000282_movie_t-2_augB1.jpg", "titan_clip_701_000282_movie_t-1_augB1.jpg", "titan_clip_701_000282_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian ahead", "environment_perception": "A narrow urban commercial street without a centerline curves gently left, forming a single mixed-traffic lane on smooth pavement with light vehicle flow but many pedestrians. In the middle ahead, a pedestrian in a white T-shirt carrying a handbag walks along the lane near the ego vehicle's path, directly occupying the travel line. On the left edge by the storefronts, another pedestrian approaches while keeping close to the curb alongside the lane. Farther ahead, a person crosses from the right toward the center and may enter the ego lane. A small white truck is stopped along the left side, narrowing the available roadway.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, carrying a handbag, walking in the middle of the road, towards the ego car. The driver should slow down to avoid a potential collision with the pedestrian entering the roadway."}
{"id": "train_02949", "split": "train", "clip_key": "titan_clip_1078_000162_movie", "source": {"subset": "titan", "scenario": "clip_1078", "frame": "000162"}, "frames": ["titan_clip_1078_000162_movie_t-3.jpg", "titan_clip_1078_000162_movie_t-2.jpg", "titan_clip_1078_000162_movie_t-1.jpg", "titan_clip_1078_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrians", "environment_perception": "An urban back street with no centerline narrows beside a construction site on the left, marked by cones and materials, and the worn pavement shows patches; traffic is very light with no vehicles ahead or oncoming. Two pedestrians in gray shirts walk away from the ego vehicle along the right edge because the sidewalk is narrow, staying close to the white edge line and potentially occupying the ego lane. Another pedestrian farther ahead walks in the middle of the roadway in the same direction, briefly aligning with the ego path. The work zone and roadside obstacles constrict the usable lane on the left.", "hazard_reasoning": "There are two pedestrians wearing gray shirts, walking on the right side of the road, away from the ego car, because the sidewalk is narrow. The driver should manoeuvre carefully to avoid them due to their proximity to the roadway and limited sidewalk space."}
{"id": "train_02950", "split": "train", "clip_key": "2020-0210-101957_009844_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "009844"}, "frames": ["2020-0210-101957_009844_movie_t-3.jpg", "2020-0210-101957_009844_movie_t-2.jpg", "2020-0210-101957_009844_movie_t-1.jpg", "2020-0210-101957_009844_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to the turning vehicle", "environment_perception": "An urban two-lane two-way street with a solid centerline approaches a small intersection and zebra crossing, the pavement clean and traffic light. Several pedestrians ahead cross the marked crosswalk from right to left across the ego lane, including one pushing a cart. To the right side of the intersection, a white sedan is turning left, edging through the crosswalk and may enter the ego lane as it completes the turn. On the cross street further ahead, another white car travels leftward past the junction without interaction.", "hazard_reasoning": "There is a white sedan turning left on the right side of the intersection ahead of the ego-car. The sedan's left turn could cross the ego-vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_02951", "split": "train", "clip_key": "2020-0203-154554_040930_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "040930"}, "frames": ["2020-0203-154554_040930_movie_t-3.jpg", "2020-0203-154554_040930_movie_t-2.jpg", "2020-0203-154554_040930_movie_t-1.jpg", "2020-0203-154554_040930_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down.", "environment_perception": "An urban expressway segment runs under an elevated structure with a single through lane bordered by guardrails and sound barriers; the pavement looks smooth and dry. Traffic in the ego lane is slow, while an adjacent, physically separated roadway on the left is heavily congested. A gray box truck directly ahead in the ego lane decelerates because traffic is backing up ahead, constraining the ego vehicle's speed. Farther ahead near the right edge of the lane, a small car also moves slowly in the same direction, contributing to the queue. On the left, a line of cars creeps forward beside the divider, remaining separate from the ego path. No signals or unusual signage are prominent.", "hazard_reasoning": "There is a gray truck in the ego-car lane that is slowing down, because there is traffic congestion ahead. The slowing gray truck indicates upcoming congestion, so the driver should reduce speed to maintain safe following distance."}
{"id": "train_02952", "split": "train", "clip_key": "2020-0213-143552_067910_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "067910"}, "frames": ["2020-0213-143552_067910_movie_t-3.jpg", "2020-0213-143552_067910_movie_t-2.jpg", "2020-0213-143552_067910_movie_t-1.jpg", "2020-0213-143552_067910_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban commercial corridor with one lane in each direction is divided by a low planted median; the pavement is smooth and traffic is light. A white box truck is stopped directly ahead in the ego lane, blocking the path and constraining the ego vehicle's pace. On the left, a small white van waits at a dealership exit beside the lane and may merge into the ego lane. Parked vehicles line the left-side frontage but remain outside the travel lane.", "hazard_reasoning": "There is white truck has stopped in front of the ego car in the ego lane. The truck has halted unexpectedly, so the driver should stop to avoid a collision."}
{"id": "train_02953", "split": "train", "clip_key": "titan_clip_817_000426_movie", "source": {"subset": "titan", "scenario": "clip_817", "frame": "000426"}, "frames": ["titan_clip_817_000426_movie_t-3.jpg", "titan_clip_817_000426_movie_t-2.jpg", "titan_clip_817_000426_movie_t-1.jpg", "titan_clip_817_000426_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban neighborhood scene shows a narrow two-way road with no centerline or median; the pavement is smooth and dry, and traffic is light with no moving vehicles visible. Ahead on the left edge of the ego lane, a pedestrian wearing a cap stands in front of a green garbage bin and pauses near the travel path, potentially entering the ego lane. Parked vehicles line the right side, including a van set back in a building's carport, which visually narrows the corridor but stays outside the lane. No traffic signals or posted speeds are conspicuous.", "hazard_reasoning": "There is a male pedestrian wearing a cap, and standing in front of a green garbage bin, on the left side of the road, in the ego lane. The driver should be aware because the pedestrian occupies the driving lane and may step into the vehicle path unexpectedly."}
{"id": "train_02954", "split": "train", "clip_key": "titan_clip_1288_000216_movie", "source": {"subset": "titan", "scenario": "clip_1288", "frame": "000216"}, "frames": ["titan_clip_1288_000216_movie_t-3.jpg", "titan_clip_1288_000216_movie_t-2.jpg", "titan_clip_1288_000216_movie_t-1.jpg", "titan_clip_1288_000216_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the white van", "environment_perception": "An urban two-way street climbs uphill between mid-rise buildings, with no median and textured pavement in good condition; traffic is light. Ahead, a red truck in the oncoming lane approaches slowly near the center, potentially affecting the ego vehicle's passage. On the right side, a white van is parked at the curb, narrowing the oncoming side of the road. On the left sidewalk, a pedestrian walks uphill beside the buildings and remains off the roadway. A 30 speed limit and a no-parking sign are posted on the left.", "hazard_reasoning": "There is a white van parked on the right side of the road. This parked vehicle reduces available road width, requiring cautious maneuvering to avoid collision."}
{"id": "train_02955", "split": "train", "clip_key": "titan_clip_935_000498_movie", "source": {"subset": "titan", "scenario": "clip_935", "frame": "000498"}, "frames": ["titan_clip_935_000498_movie_t-3.jpg", "titan_clip_935_000498_movie_t-2.jpg", "titan_clip_935_000498_movie_t-1.jpg", "titan_clip_935_000498_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with buildings tight to the curb and no center line is shown; the pavement is dry and intact and traffic is light. A white minivan in the oncoming lane at the right edge is stopped or crawling, narrowing the available width for the ego vehicle to pass. A cyclist ahead in the same direction pedals away near the center of the lane, likely to constrain the ego vehicle's pace. Two pedestrians on the left, one in white and one in stripes, walk away along the curb beside the ego lane but remain outside the roadway. No salient signals or signs are visible.", "hazard_reasoning": "There are two pedestrians wearing a white and striped shirt, walking on the left side of the road, away from the ego car. The driver should slow down because the pedestrians may step onto the roadway unexpectedly."}
{"id": "train_02956", "split": "train", "clip_key": "titan_clip_941_000258_movie", "source": {"subset": "titan", "scenario": "clip_941", "frame": "000258"}, "frames": ["titan_clip_941_000258_movie_t-3.jpg", "titan_clip_941_000258_movie_t-2.jpg", "titan_clip_941_000258_movie_t-1.jpg", "titan_clip_941_000258_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban side street with no centerline and smooth pavement curves gently right between buildings, and traffic is light with no vehicles visible. On the left close to the camera, a pedestrian wearing a white shirt and black pants, carrying a handbag, walks away along the curb, staying near the ego lane and potentially affecting the passing space. Ahead near the center-right, a person stands and inches forward beside a teal handcart in the roadway, which could edge into the lane. Farther ahead near the bend under a building, a couple of pedestrians linger and one crosses the street, briefly occupying the anticipated path. Orange cones line the right edge by a doorway, and the buildings create limited sight around the upcoming right curve.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a handbag, walking away from the ego car, on the left side of the road. The pedestrian may unexpectedly enter the vehicle's path, so the driver should carefully manoeuvre around them."}
{"id": "train_02957", "split": "train", "clip_key": "titan_clip_1256_000126_movie", "source": {"subset": "titan", "scenario": "clip_1256", "frame": "000126"}, "frames": ["titan_clip_1256_000126_movie_t-3.jpg", "titan_clip_1256_000126_movie_t-2.jpg", "titan_clip_1256_000126_movie_t-1.jpg", "titan_clip_1256_000126_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "An urban neighborhood scene shows the ego-vehicle approaching a narrow two-way street with a zebra crossing at an unsignalized intersection; the dry pavement looks worn and traffic is light. Ahead on the right, a dark SUV sits at the mouth of a side street, angled toward the roadway and waiting near the crosswalk, narrowing the space at the corner. At the same corner, a pedestrian in a white shirt, gray pants, and a backpack crosses from right to left on the crosswalk in front of the ego path. Farther ahead, a small white vehicle continues along the same road. A pedestrian crossing sign is visible on the left.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, gray pants, and carrying a backpack, at the right side of the intersection, crossing the street from the right side of the road to the left side. The driver should yield because the pedestrian is already entering the crosswalk and has right-of-way."}
{"id": "train_02958", "split": "train", "clip_key": "2020-0210-101957_014827_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "014827"}, "frames": ["2020-0210-101957_014827_movie_t-3.jpg", "2020-0210-101957_014827_movie_t-2.jpg", "2020-0210-101957_014827_movie_t-1.jpg", "2020-0210-101957_014827_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road approaches a signalized intersection, the pavement looks smooth and traffic is light to moderate. Ahead in the ego lane, a white truck pulls away from the camera at the green light, increasing the gap. To the right, a motor scooter in the adjacent lane accelerates and continues straight through the junction, running parallel to the ego vehicle. Oncoming cars pass through the intersection on the far side and remain in their own lane. Several construction trucks are parked along the left shoulder near the curb, narrowing the margin but remaining stationary.", "hazard_reasoning": "The white truck is driving away from the ego car in the ego lane because of green traffic light. Following it ensures you maintain a safe distance and match its speed through the green signal phase."}
{"id": "train_02959", "split": "train", "clip_key": "titan_clip_596_000090_movie", "source": {"subset": "titan", "scenario": "clip_596", "frame": "000090"}, "frames": ["titan_clip_596_000090_movie_t-3.jpg", "titan_clip_596_000090_movie_t-2.jpg", "titan_clip_596_000090_movie_t-1.jpg", "titan_clip_596_000090_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully to avoid pedestrian", "environment_perception": "A narrow urban shopping street with a single mixed-traffic lane and no median has slightly worn asphalt and light traffic, with most activity from pedestrians and storefronts. A pedestrian in a white shirt and black pants walks toward the camera along the left side of the road because parked bicycles line the right, and he may enter the ego vehicle's path. A man stands at the left curb by a shop entrance looking at his phone, lingering near the travel way. Farther ahead near the center-right, another pedestrian proceeds slowly away from the camera, reducing the available space. Parked bicycles and signboards along the right edge encroach into the lane and visually narrow it.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and walking on the left side of the road, toward the ego car, because of the parked bicycles. This pedestrian may enter the driving lane to avoid the parked bicycles, so the driver should carefully manoeuvre to prevent a collision."}
{"id": "train_02960", "split": "train", "clip_key": "2020-0205-103411_035114_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "035114"}, "frames": ["2020-0205-103411_035114_movie_t-3.jpg", "2020-0205-103411_035114_movie_t-2.jpg", "2020-0205-103411_035114_movie_t-1.jpg", "2020-0205-103411_035114_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban two-lane road curves gently right, bordered by a wall with trees on the left and a guardrail on the right, with dry, well-marked pavement and light traffic. A silver van ahead in the ego lane slows on the curve, constraining the ego car's pace. In the adjacent right lane slightly farther ahead, a dark car proceeds steadily without signaling or changing lanes. Overhead directional boards are visible ahead, and no traffic signals or unusual road markings stand out. No pedestrians or cyclists appear, and no obstacles are present.", "hazard_reasoning": "There is a silver van slowing in front of the ego car, in the ego lane. Driver should slow down because the van ahead is reducing speed unexpectedly, requiring increased following distance."}
{"id": "train_02961", "split": "train", "clip_key": "2020-0225-102455_071695_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "071695"}, "frames": ["2020-0225-102455_071695_movie_t-3.jpg", "2020-0225-102455_071695_movie_t-2.jpg", "2020-0225-102455_071695_movie_t-1.jpg", "2020-0225-102455_071695_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with clear dashed white lines and dry pavement carries heavy, slow same-direction traffic between tall buildings. Directly ahead in the ego lane, a white van is stopped because of congestion ahead and temporarily holds the ego car. In the adjacent right lane, a gray hatchback travels alongside at very low speed, limiting any opportunity to merge. Farther ahead in that right lane, a black taxi slows with brake lights as the queue stretches forward, indicating the jam across lanes. Along the left curb lane, several delivery trucks and vans are stopped for loading with workers nearby, forming a stationary line that narrows usable space.", "hazard_reasoning": "A white van is has stopped in the ego lane in front of the ego car, because of the traffic congestion ahead. You should stop to avoid a rear-end collision with the halted van."}
{"id": "train_02962", "split": "train", "clip_key": "titan_clip_1040_000444_movie", "source": {"subset": "titan", "scenario": "clip_1040", "frame": "000444"}, "frames": ["titan_clip_1040_000444_movie_t-3.jpg", "titan_clip_1040_000444_movie_t-2.jpg", "titan_clip_1040_000444_movie_t-1.jpg", "titan_clip_1040_000444_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban shopping street appears, a narrow two-way road without a centerline; the pavement is smooth and traffic is light, consisting mainly of bicycles and a few pedestrians. Two cyclists ride ahead in the ego lane at low speed near the center of the roadway, effectively setting the pace. Another cyclist approaches from ahead in the oncoming direction, continuing straight past the shops. On the right edge, a pedestrian with long dark hair, a backpack, and black capris walks away from the ego car along the roadway where there is no sidewalk, staying close to the curbside but within the carriageway and potentially encroaching into the lane. Numerous parked bicycles and shop displays line both sides, narrowing the usable lane.", "hazard_reasoning": "There is a pedestrian with long dark hair, carrying a backpack, and wearing black capris who is walking on the right side of the road, away from the ego car, because there is no sidewalk. The pedestrian is forced onto the roadway, posing a collision risk if sufficient space is not given."}
{"id": "train_02963", "split": "train", "clip_key": "2020-0228-102841_087217_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "087217"}, "frames": ["2020-0228-102841_087217_movie_t-3.jpg", "2020-0228-102841_087217_movie_t-2.jpg", "2020-0228-102841_087217_movie_t-1.jpg", "2020-0228-102841_087217_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of lane changes ahead", "environment_perception": "An urban three-lane arterial with smooth asphalt and a metal fence median to the right carries light, steady traffic as the road bends gently right between tall buildings; the fence separates opposing traffic on the far side. Ahead of the ego vehicle, a white sedan from the ego lane moves right into the adjacent lane in front of us. Farther ahead in the center lane, a small white car continues straight at a similar pace and sets the cruising gap. In the right lane near the median, a small box truck proceeds ahead. An overhead blue direction sign is visible above the roadway.", "hazard_reasoning": "There is a white sedan lane changing in front of the ego car, from the ego lane, to the right lane. The white sedan is merging into your lane, so be cautious of its movement to maintain safe distance."}
{"id": "train_02964", "split": "train", "clip_key": "2020-0207-101955_009656_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "009656"}, "frames": ["2020-0207-101955_009656_movie_t-3.jpg", "2020-0207-101955_009656_movie_t-2.jpg", "2020-0207-101955_009656_movie_t-1.jpg", "2020-0207-101955_009656_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction and a low planted median runs between mid-rise buildings; the pavement is smooth and traffic is moderate, moving steadily through a signalized intersection. A small box truck ahead in the ego lane accelerates straight and pulls away, leading the lane through the crossing. A black hatchback slightly ahead in the adjacent lane travels parallel at a similar pace without merging. Oncoming cars and white vans move steadily on the far side of the median, well separated from the ego path. A few pedestrians stand on the left sidewalk near the crosswalk but remain off the roadway.", "hazard_reasoning": "There is a white-and-green moving van driving away from the ego car, in the ego lane, because of green traffic lights. The traffic signal may change and the lead vehicle's speed could vary, so the driver needs to follow closely and be prepared for any sudden stops."}
{"id": "train_02965", "split": "train", "clip_key": "2020-0226-101332_043616_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "043616"}, "frames": ["2020-0226-101332_043616_movie_t-3.jpg", "2020-0226-101332_043616_movie_t-2.jpg", "2020-0226-101332_043616_movie_t-1.jpg", "2020-0226-101332_043616_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement runs under an elevated roadway, divided from oncoming lanes at the right by a metal barrier; traffic is heavy and largely stopped near an intersection. A white minivan directly ahead in the ego lane is stopped because of congestion, blocking the path. In the adjacent left lane, a red car followed by a white wagon inches forward in the queue, limiting any chance to merge left. A black van sits slightly rear-left alongside the ego vehicle, moving slowly and further constraining a lane change. A traffic light ahead shows red, and overhead direction signs span the roadway.", "hazard_reasoning": "There is a white minivan stopping in the ego lane in front of the ego car, because of traffic congestion. The driver should slow down to avoid rear-ending the vehicle and keep a safe following distance."}
{"id": "train_02966", "split": "train", "clip_key": "2020-0221-115122_019637_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0221-115122_019637_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0221-115122_019637_movie_t-3_augB1.jpg", "2020-0221-115122_019637_movie_t-2_augB1.jpg", "2020-0221-115122_019637_movie_t-1_augB1.jpg", "2020-0221-115122_019637_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield to merging vehicle", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway with a guardrail on the right; pavement looks smooth and traffic is heavy and slow in queues. Slightly ahead on the left, a white sedan changes from the left lane into the ego-vehicle's lane, merging into a small gap and constraining the ego car's pace. Directly ahead, a dark taxi in the ego lane creeps forward in stop-and-go, setting the speed of the line. In the right lane, a light blue hatchback travels alongside and then edges ahead, reducing space for lane changes.", "hazard_reasoning": "There's a white sedan changing lanes from the left lane to the ego-car lane. The merging sedan may collide with the ego-vehicle if the driver does not yield promptly."}
{"id": "train_02967", "split": "train", "clip_key": "2020-0207-101955_107076_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "107076"}, "frames": ["2020-0207-101955_107076_movie_t-3.jpg", "2020-0207-101955_107076_movie_t-2.jpg", "2020-0207-101955_107076_movie_t-1.jpg", "2020-0207-101955_107076_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane roadway runs under an elevated expressway with dry pavement and heavy, stop-and-go same-direction traffic. A blue sedan is stopped directly ahead in the ego lane because of congestion extending forward, holding the ego vehicle. A large box truck in the adjacent left lane inches along beside the ego, constraining lateral space. In the right lane, a queue including a white van and a red hatchback crawls ahead-right, remaining parallel to the blue car as the jam persists.", "hazard_reasoning": "There is a blue sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The halted vehicle poses a high risk of rear-end collision if the driver does not stop promptly."}
{"id": "train_02968", "split": "train", "clip_key": "2020-0217-144444_011257_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "011257"}, "frames": ["2020-0217-144444_011257_movie_t-3.jpg", "2020-0217-144444_011257_movie_t-2.jpg", "2020-0217-144444_011257_movie_t-1.jpg", "2020-0217-144444_011257_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the merging yellow sedan.", "environment_perception": "A narrow urban two-lane road with no median runs between offices and trees; the pavement looks smooth with a few manholes, and traffic is light. Ahead in the ego lane, a yellow sedan begins changing into the left lane, influencing the ego vehicle's pace as it shifts over. On the right sidewalk, two pedestrians walk parallel to the road and remain off the carriageway. Orange cones line the left shoulder near hedges.", "hazard_reasoning": "There is a yellow sedan lane changing to the left lane from the ego lane. You should be aware because this merge could cut off the ego-vehicle's path unexpectedly and require sudden deceleration."}
{"id": "train_02969", "split": "train", "clip_key": "2020-0214-102601_030375_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "030375"}, "frames": ["2020-0214-102601_030375_movie_t-3.jpg", "2020-0214-102601_030375_movie_t-2.jpg", "2020-0214-102601_030375_movie_t-1.jpg", "2020-0214-102601_030375_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain a safe distance.", "environment_perception": "An urban arterial with three lanes in the ego direction runs between high-rises on smooth pavement, and overall flow is slow with congestion ahead. A silver sedan directly ahead in the ego lane slows because of the queue, constraining the ego car's pace. A motorcycle just to the right of that sedan filters forward between lanes and edges ahead, potentially moving across the ego path. A black minivan in the right adjacent lane travels slightly ahead at low speed near the motorcycle, narrowing space for a lane change.", "hazard_reasoning": "There is a silver sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Slow down to maintain a safe following distance due to the reduced speed of the vehicle ahead under congestion."}
{"id": "train_02970", "split": "train", "clip_key": "2020-0204-103442_096508_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "096508"}, "frames": ["2020-0204-103442_096508_movie_t-3.jpg", "2020-0204-103442_096508_movie_t-2.jpg", "2020-0204-103442_096508_movie_t-1.jpg", "2020-0204-103442_096508_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows a three-lane approach to a junction on dry red pavement with a guardrail along the right, and traffic appears light. A white van drives directly ahead in the ego lane at a steady pace, effectively setting the ego car's speed. Farther ahead in the same lane, a small white car continues toward the junction and further constrains the van. Alongside on the left, a silver van travels parallel near the ego vehicle in the adjacent lane without changing lanes. An overhead blue sign indicates lane directions for left, straight, and right.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_02971", "split": "train", "clip_key": "titan_clip_620_000306_movie", "source": {"subset": "titan", "scenario": "clip_620", "frame": "000306"}, "frames": ["titan_clip_620_000306_movie_t-3.jpg", "titan_clip_620_000306_movie_t-2.jpg", "titan_clip_620_000306_movie_t-1.jpg", "titan_clip_620_000306_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "be aware of the traffic cone", "environment_perception": "In an urban residential area, the ego-vehicle proceeds on a narrow two-way road with no median and smooth pavement, curving gently left, and traffic is light with the oncoming lane clear. A small white truck stands ahead along the left curb, encroaching slightly into the ego lane and narrowing the passage. Farther ahead on the same side, another light truck remains parked. A row of green traffic cones lines the left edge of the roadway, and white guardrails run along the right side. No pedestrians or cyclists are visible, and no salient signals or posted speeds affect the scene.", "hazard_reasoning": "There is a traffic cone on the right side of the road. The cone marks a temporary road divider that may affect lane alignment, so the driver should be cautious and maintain correct lane position."}
{"id": "train_02972", "split": "train", "clip_key": "2020-0226-140503_063255_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "063255"}, "frames": ["2020-0226-140503_063255_movie_t-3.jpg", "2020-0226-140503_063255_movie_t-2.jpg", "2020-0226-140503_063255_movie_t-1.jpg", "2020-0226-140503_063255_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street runs alongside a railway viaduct, curving gently right with no median; the damp pavement suggests recent rain and traffic is light. A gray hatchback is turning in the middle of the intersection ahead of the ego car, near a small junction and close to the center line. A pedestrian with a transparent umbrella walks along the left sidewalk beside the railing, remaining off the carriageway. Another pedestrian is on the right sidewalk near shopfronts and does not step into the road. No signals or unusual signage are prominent.", "hazard_reasoning": "There is a gray hatchback turning in the middle of the intersection in front of the ego car. The unexpected turn may create a lane conflict and reduce the time to react. The driver should slow down to maintain a safe distance and be prepared for sudden maneuvers."}
{"id": "train_02973", "split": "train", "clip_key": "2020-0207-151349_019096_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "019096"}, "frames": ["2020-0207-151349_019096_movie_t-3.jpg", "2020-0207-151349_019096_movie_t-2.jpg", "2020-0207-151349_019096_movie_t-1.jpg", "2020-0207-151349_019096_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs between commercial buildings with a barrier along the right edge; the dry pavement is smooth and traffic is moderate and slow-moving. A white box truck drives directly ahead in the ego lane and gradually pulls away, matching the caption, and it sets the immediate pace. In the adjacent right lane a dark van ahead slows in a short queue of cars, continuing straight alongside the ego vehicle. On the left, a white van slightly ahead proceeds in its lane and moves past the ego car without merging. Farther ahead, several cars across the lanes bunch up toward heavier congestion, limiting overall speed.", "hazard_reasoning": "There is a white truck driving in front of and away from the ego car, in the ego lane. The driver should follow the vehicle ahead to maintain a safe following distance and be prepared if the truck brakes suddenly."}
{"id": "train_02974", "split": "train", "clip_key": "2020-0129-144857_020437_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "020437"}, "frames": ["2020-0129-144857_020437_movie_t-3.jpg", "2020-0129-144857_020437_movie_t-2.jpg", "2020-0129-144857_020437_movie_t-1.jpg", "2020-0129-144857_020437_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two same-direction lanes, smooth asphalt, and a metal guardrail along the right curb carries heavy stop-and-go traffic as vehicles queue at a signal. A black sedan directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. Slightly farther ahead in the adjacent left lane, a tall white box truck also waits, partly obscuring the view of the intersection and contributing to the queue. To the left of the ego vehicle, a silver hatchback creeps forward in the next lane, parallel to the ego path and limiting merge options. Overhead green direction boards span the roadway.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, because of the red traffic light. The driver should stop to avoid rear-ending the halted vehicle ahead."}
{"id": "train_02975", "split": "train", "clip_key": "titan_clip_881_000126_movie", "source": {"subset": "titan", "scenario": "clip_881", "frame": "000126"}, "frames": ["titan_clip_881_000126_movie_t-3.jpg", "titan_clip_881_000126_movie_t-2.jpg", "titan_clip_881_000126_movie_t-1.jpg", "titan_clip_881_000126_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial street with a narrow two-way roadway and no median stretches ahead; the pavement is smooth and traffic is light. A white box truck ahead in the ego lane sits nearly stopped near the center for loading, constraining the ego vehicle's path. A pedestrian in a pink shirt pushing a dolly walks along the left edge of the road away from the ego car, moving past the truck close to the curb. Farther ahead another vehicle in the same direction proceeds slowly down the street beyond the truck. On the right, pedestrians stay on the sidewalk by the storefronts and bicycles are parked along the curb.", "hazard_reasoning": "There is a pedestrian wearing a pink shirt and pushing a dolly, walking along the left side of the road, away from the ego car. The parked truck partially obstructs your view, and the pedestrian could step into the lane unexpectedly, so you should manoeuvre carefully around the pedestrian."}
{"id": "train_02976", "split": "train", "clip_key": "2020-0131-135401_084758_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "084758"}, "frames": ["2020-0131-135401_084758_movie_t-3.jpg", "2020-0131-135401_084758_movie_t-2.jpg", "2020-0131-135401_084758_movie_t-1.jpg", "2020-0131-135401_084758_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two same-direction lanes and a central barrier appears well paved, and traffic is heavy and slow. A white van directly ahead in the ego lane is stopped because of congestion and sets the pace. An orange box truck alongside in the left adjacent lane creeps forward near the ego car, remaining parallel to it. Farther ahead in the left lane, a small van edges through the queue, staying within its lane and not crossing the median. On the opposite side of the barrier, oncoming cars move steadily with no interaction. Overhead traffic signals are visible at the junction ahead, and no unusual obstacles or work zones appear.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of the traffic congestion ahead. The stopped van indicates slowing traffic ahead and requires the driver to stop to avoid a rear-end collision under this situation."}
{"id": "train_02977", "split": "train", "clip_key": "titan_clip_423_000414_movie", "source": {"subset": "titan", "scenario": "clip_423", "frame": "000414"}, "frames": ["titan_clip_423_000414_movie_t-3.jpg", "titan_clip_423_000414_movie_t-2.jpg", "titan_clip_423_000414_movie_t-1.jpg", "titan_clip_423_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street with one lane each direction has smooth pavement and no median, and traffic is light but momentarily impeded. Ahead to the right in the oncoming lane, a white box truck faces the camera and is stopped near the centerline, narrowing the roadway and influencing the ego vehicle's path. On the right side near this truck, a pedestrian wearing a blue shirt and a white helmet stands partly in the roadway and gestures with a flag, guiding the traffic and effectively controlling the ego vehicle's pace. A narrow sidewalk with bollards lines the left, and no salient signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and white helmet, standing on the right side of the road, because they are guiding the traffic. The driver should carefully manoeuvre around the pedestrian to avoid a collision while they direct vehicles."}
{"id": "train_02978", "split": "train", "clip_key": "titan_clip_227_000354_movie", "source": {"subset": "titan", "scenario": "clip_227", "frame": "000354"}, "frames": ["titan_clip_227_000354_movie_t-3.jpg", "titan_clip_227_000354_movie_t-2.jpg", "titan_clip_227_000354_movie_t-1.jpg", "titan_clip_227_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around pedestrian", "environment_perception": "A narrow urban two-way street runs between tall buildings, with worn pavement and light traffic; the right curb is lined with parked vehicles that squeeze the lane. A pedestrian in a white T-shirt carrying a backpack walks ahead on the left side away from the ego car along its path, effectively setting the pace. A large box truck stands on the right near the camera, jutting slightly into the lane and creating a pinch point. Farther ahead, several vans remain parked along the right curb, further narrowing the corridor and limiting sight down the street. No oncoming vehicles or traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, carrying a backpack, walking on the left side of the road, away from the ego car. The pedestrian's proximity to the roadway and obstructed sight-lines due to the white truck could lead to unexpected crossing, so the driver should manoeuvre around the pedestrian to avoid collision."}
{"id": "train_02979", "split": "train", "clip_key": "titan_clip_459_000030_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_459_000030_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_459_000030_movie_t-3_augB1.jpg", "titan_clip_459_000030_movie_t-2_augB1.jpg", "titan_clip_459_000030_movie_t-1_augB1.jpg", "titan_clip_459_000030_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian ahead", "environment_perception": "A narrow urban shopping street with a single unmarked lane and no median runs between storefronts; the pavement is smooth and traffic is light. Ahead in the ego lane near the left curb, a white van stands nearly stationary, narrowing the passage and constraining the ego vehicle's pace. In front of it, a pedestrian wearing a white T-shirt, blue pants, and a cap, carrying a handbag, walks toward the ego vehicle in the lane because the parked van blocks their path, making them relevant to the ego vehicle's course. Another pedestrian on the left sidewalk moves along the road but remains off the lane and poses no immediate interaction. Sidewalk signs and parked bicycles line the edges, slightly reducing roadside clearance.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, blue pants, wearing a cap, carrying a handbag walking toward the ego car, because of the parked vehicle, in front of the ego car. The parked van blocks the pedestrian's path, causing them to step into the lane unexpectedly, so you should slow down to avoid a collision."}
{"id": "train_02980", "split": "train", "clip_key": "titan_clip_345_000462_movie", "source": {"subset": "titan", "scenario": "clip_345", "frame": "000462"}, "frames": ["titan_clip_345_000462_movie_t-3.jpg", "titan_clip_345_000462_movie_t-2.jpg", "titan_clip_345_000462_movie_t-1.jpg", "titan_clip_345_000462_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian on the left.", "environment_perception": "An urban commercial street with a single narrow shared lane runs between close storefronts on brick paving, with no centerline or median and very light vehicular traffic. A man wearing a blue shirt and black pants carries a bag while walking along the left side away from the ego vehicle, keeping near the shopfronts. A man in a white shirt ahead walks straight down the middle away from the camera and may constrain the ego vehicle's pace. On the right, a pedestrian steps off the sidewalk and moves diagonally toward the center, potentially entering the path. Farther ahead, several people walk in both directions along the lane. A round red-edged sign on the left indicates no motor vehicles.", "hazard_reasoning": "There is a man wearing a blue shirt and black pants, carrying a bag, and walking on the left side of the road, away from the ego car. The driver should be cautious because this pedestrian might step into the vehicle's path unexpectedly."}
{"id": "train_02981", "split": "train", "clip_key": "2020-0227-104226_105857_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "105857"}, "frames": ["2020-0227-104226_105857_movie_t-3.jpg", "2020-0227-104226_105857_movie_t-2.jpg", "2020-0227-104226_105857_movie_t-1.jpg", "2020-0227-104226_105857_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction runs under an overhead structure, bordered by guardrails and smooth pavement, and traffic appears moderate with steady flow. A white box truck ahead in the ego lane drives away from the camera at a constant pace and effectively governs the ego car's speed. In the right adjacent lane, a white SUV travels slightly ahead and continues straight without merging. Along the left curb near the ego position, a small red hatchback is stopped in the shoulder and remains stationary. No traffic signals or other salient controls are visible.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The truck could brake suddenly or change speed unexpectedly, so the driver should maintain a safe distance by following the vehicle ahead."}
{"id": "train_02982", "split": "train", "clip_key": "titan_clip_102_000390_movie", "source": {"subset": "titan", "scenario": "clip_102", "frame": "000390"}, "frames": ["titan_clip_102_000390_movie_t-3.jpg", "titan_clip_102_000390_movie_t-2.jpg", "titan_clip_102_000390_movie_t-1.jpg", "titan_clip_102_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with brick paving forms a single shared low-speed lane without a divider; traffic is light as the ego vehicle rolls forward between close storefronts and roadside cones. Ahead in the lane, a small white van travels away at low speed, constraining the ego car's pace. Closer ahead, a pedestrian wearing a white shirt walks in the middle of the road away from the ego vehicle while other pedestrians occupy the sidewalks, directly in the ego path. Additional pedestrians move along both sides near the shopfronts but remain at the edges. No traffic signals or speed signs are evident, and the pavement appears smooth.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking in the middle of the road, away from the ego car, because other pedestrians are taking up the sidewalk. The driver should slow down to avoid a collision as the pedestrian is unsafely occupying the travel lane."}
{"id": "train_02983", "split": "train", "clip_key": "titan_clip_973_000558_movie", "source": {"subset": "titan", "scenario": "clip_973", "frame": "000558"}, "frames": ["titan_clip_973_000558_movie_t-3.jpg", "titan_clip_973_000558_movie_t-2.jpg", "titan_clip_973_000558_movie_t-1.jpg", "titan_clip_973_000558_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban single-lane road with no median runs beneath a green railway overpass beside a brick wall and storefronts; the worn pavement is dry and traffic is light with no other vehicles visible. On the left, a man wearing a gray vest, black shorts, and a cap walks away from the ego car along the guardrail at the lane edge, close enough to influence the vehicle's pace. On the right, a man in business attire walks away near the curb by the shopfront within the roadway, reducing usable width. Farther ahead under the bridge, several pedestrians occupy both sides of the road and continue along the lane, keeping the path narrow. The overpass forms a shadowed underpass that limits the view beyond.", "hazard_reasoning": "There is a man wearing a gray vest, black shorts, and a cap, and walking on the left side of the road, away from the ego car. The driver should manoeuvre carefully around the pedestrian since he is walking close to the vehicle's path."}
{"id": "train_02984", "split": "train", "clip_key": "2020-0127-132751_001804_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "001804"}, "frames": ["2020-0127-132751_001804_movie_t-3.jpg", "2020-0127-132751_001804_movie_t-2.jpg", "2020-0127-132751_001804_movie_t-1.jpg", "2020-0127-132751_001804_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of the cyclist in the lane.", "environment_perception": "An urban multi-lane two-way street with no median and worn, patchy pavement comes into view, and the ego-vehicle advances toward a signalized intersection amid light traffic. To the left of the ego lane, a cyclist in a black jacket and helmet rides straight in the adjacent lane because there is no bike lane, moving parallel close enough to matter for any leftward merge. Ahead in the opposite direction, a white car approaches through the intersection in the right-side oncoming lanes and continues in its lane. Farther right, a black taxi proceeds toward the camera along the curbside oncoming lane past the junction. A small white truck is parked at the right curb near the corner.", "hazard_reasoning": "There is a cyclist in a black jacket and black helmet, cycling in the lane to the left of the ego-car, because there is no bike lane. Since the cyclist occupies the main traffic lane without a bike lane, you should maintain awareness to avoid potential conflict."}
{"id": "train_02985", "split": "train", "clip_key": "2020-0129-144857_004148_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "004148"}, "frames": ["2020-0129-144857_004148_movie_t-3.jpg", "2020-0129-144857_004148_movie_t-2.jpg", "2020-0129-144857_004148_movie_t-1.jpg", "2020-0129-144857_004148_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street curves gently right with one lane each direction, a curbside bicycle lane, and smooth pavement; traffic is moderate. Ahead in the ego lane, a black van slows because of congestion ahead and it constrains the ego vehicle's pace. In the oncoming lane to the right, a white box truck approaches steadily while maintaining its line. Along the left curb, several vans and small trucks remain parked or waiting, narrowing the margin beside the ego lane. A no right turn sign is posted on the left sidewalk.", "hazard_reasoning": "There is a black van slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. Slow down to avoid rear-end collision due to slowing traffic."}
{"id": "train_02986", "split": "train", "clip_key": "titan_clip_61_000564_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_61_000564_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_61_000564_movie_t-3_augB1.jpg", "titan_clip_61_000564_movie_t-2_augB1.jpg", "titan_clip_61_000564_movie_t-1_augB1.jpg", "titan_clip_61_000564_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrians crossing ahead", "environment_perception": "An urban scene on a narrow two-way street with no median and smooth pavement, lined by close buildings; traffic is light with several vehicles parked along the left, and no oncoming vehicles are visible. A black sedan is parked on the left curb just ahead in the ego lane, narrowing the passage and shaping the path around it. Farther ahead, a small box truck in the same direction stands near the curb and appears stopped, constraining the pace. In the middle distance, a group of pedestrians wearing white shirts crosses the street mid-block from right to left, moving toward the ego lane.", "hazard_reasoning": "There are a group of pedestrians wearing white shirts, crossing the street in the middle of the road, and walking from the right side to the left side. Drivers should be cautious because these pedestrians could step into the vehicle's path unexpectedly."}
{"id": "train_02987", "split": "train", "clip_key": "titan_clip_632_000234_movie", "source": {"subset": "titan", "scenario": "clip_632", "frame": "000234"}, "frames": ["titan_clip_632_000234_movie_t-3.jpg", "titan_clip_632_000234_movie_t-2.jpg", "titan_clip_632_000234_movie_t-1.jpg", "titan_clip_632_000234_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Yield to cyclist", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway, no divider, and smooth asphalt appears lightly trafficked as the ego vehicle proceeds gently uphill past a T-junction on the left. Ahead near the center-right, a cyclist rides away in the same direction along the green edge lane and may constrain the ego car's pace. Multiple pedestrians walk ahead on both sides, some close to the roadway and occasionally edging toward the lane, making them relevant to the ego path. A convex safety mirror stands on the right corner; no traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and cycling towards the ego car, on the right side of the road. The cyclist is approaching the vehicle's path and may enter its lane, so the driver should yield to avoid collision."}
{"id": "train_02988", "split": "train", "clip_key": "2020-0226-101332_073229_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "073229"}, "frames": ["2020-0226-101332_073229_movie_t-3.jpg", "2020-0226-101332_073229_movie_t-2.jpg", "2020-0226-101332_073229_movie_t-1.jpg", "2020-0226-101332_073229_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a raised median divides directions; the pavement is smooth and traffic is moderate, moving steadily through a signalized intersection. The silver van ahead in the ego lane drives away through the junction, leading the ego vehicle's pace. A white delivery scooter in the left curb lane just ahead proceeds straight at a slower speed, remaining beside the ego path. A motorcyclist slightly to the right accelerates ahead in the adjacent lane, passing nearby cars. Overhead traffic lights show green, and oncoming traffic flows normally beyond the median.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car. The van ahead could brake unexpectedly, so you should follow the vehicle ahead to maintain a safe distance and avoid collision."}
{"id": "train_02989", "split": "train", "clip_key": "2020-0214-145407_008250_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "008250"}, "frames": ["2020-0214-145407_008250_movie_t-3.jpg", "2020-0214-145407_008250_movie_t-2.jpg", "2020-0214-145407_008250_movie_t-1.jpg", "2020-0214-145407_008250_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs under elevated expressways, with three same-direction lanes, smooth pavement, and heavy stop-and-go flow. A white van directly ahead in the ego lane slows because of congestion ahead, constraining the ego vehicle's speed. To the left, a silver hatchback slightly ahead in the adjacent lane creeps forward parallel to the ego vehicle without indicating any lane change. In the right lane, a white minivan followed closely by a light-colored SUV rolls slowly beside the ego lane, reducing gaps and limiting lane-change options. A pedestrian overpass and guardrails line the scene.", "hazard_reasoning": "There is a white van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a collision with the slowing traffic ahead."}
{"id": "train_02990", "split": "train", "clip_key": "2020-0220-102630_032923_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "032923"}, "frames": ["2020-0220-102630_032923_movie_t-3.jpg", "2020-0220-102630_032923_movie_t-2.jpg", "2020-0220-102630_032923_movie_t-1.jpg", "2020-0220-102630_032923_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection on a two-way road with no median and smooth pavement is ahead, with moderate cross-street flow while the ego vehicle waits. The overhead signal facing the ego lane shows red. Two pedestrians wearing gray jackets cross the zebra crossing from the left to the right in front of the car, progressing steadily across the ego lane because the signal favors them. A scooter rider travels across the crosswalk from right to left directly ahead, continuing through the intersection. Several vans and a box truck move along the cross street from right to left beyond the crossing.", "hazard_reasoning": "There are two pedestrians wearing gray jackets, crossing the street at a pedestrian crossing, from the left side to the right side, because of the red traffic light. Since the pedestrians are crossing under a red light at the crosswalk, the driver must stop to allow them to pass safely."}
{"id": "train_02991", "split": "train", "clip_key": "2020-0206-142535_023314_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "023314"}, "frames": ["2020-0206-142535_023314_movie_t-3.jpg", "2020-0206-142535_023314_movie_t-2.jpg", "2020-0206-142535_023314_movie_t-1.jpg", "2020-0206-142535_023314_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red traffic light.", "environment_perception": "An urban multilane arterial with a raised planted median and smooth pavement is shown, and traffic is heavy with vehicles queued at a signalized intersection. A silver hatchback is stopped directly ahead in the ego lane because the signal ahead shows red, holding the ego car. Farther ahead in the same lane, a tall white box truck also waits near the stop line, limiting the view and pace. In the adjacent lane on the left, a white SUV beside the ego car and a small van ahead of it are stopped in the same direction. The red traffic light for the ego approach remains visible as the queue waits.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver must stop to avoid colliding with the halted vehicle at the red light."}
{"id": "train_02992", "split": "train", "clip_key": "2020-0220-102630_102292_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "102292"}, "frames": ["2020-0220-102630_102292_movie_t-3.jpg", "2020-0220-102630_102292_movie_t-2.jpg", "2020-0220-102630_102292_movie_t-1.jpg", "2020-0220-102630_102292_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two lanes in the ego direction and no median runs between mid-rise buildings; the pavement is dry and traffic is moderate, forming a short queue at a signalized intersection. A white truck with a black tarp is directly ahead in the ego lane and is stopped for the red light, holding the ego car. To its left, a white van in the adjacent same-direction lane slows and stops near the crosswalk alongside the truck. Farther ahead across the junction, oncoming vehicles wait beyond the zebra crossing.", "hazard_reasoning": "There is a white truck with a black tarp stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should halt to avoid colliding with the stationary truck and comply with the traffic signal."}
{"id": "train_02993", "split": "train", "clip_key": "2020-0225-145150_007141_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "007141"}, "frames": ["2020-0225-145150_007141_movie_t-3.jpg", "2020-0225-145150_007141_movie_t-2.jpg", "2020-0225-145150_007141_movie_t-1.jpg", "2020-0225-145150_007141_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three lanes in each direction and no physical median stretches ahead on dry, smooth pavement, with light to moderate traffic. A gold van ahead in the ego lane moves away from the camera and continues straight, effectively setting the pace as it pulls farther ahead. Along the left curb just beyond the intersection, a white van and a small shuttle-type vehicle are stopped in the curb lane, narrowing space but staying out of the travel lane. In the right adjacent lane, a white minivan travels slightly ahead at a similar speed, remaining a close parallel neighbor. An overhead traffic signal spans the intersection ahead, though its aspect is not clearly visible.", "hazard_reasoning": "There is a gold van driving in the ego lane, away from the ego car. The vehicle ahead may change speed suddenly, so the driver should follow the vehicle ahead to maintain a safe distance."}
{"id": "train_02994", "split": "train", "clip_key": "titan_clip_1053_000192_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1053_000192_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1053_000192_movie_t-3_augB1.jpg", "titan_clip_1053_000192_movie_t-2_augB1.jpg", "titan_clip_1053_000192_movie_t-1_augB1.jpg", "titan_clip_1053_000192_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian pushing trolley crossing", "environment_perception": "A narrow urban two-way street with single lanes and no median runs between mid-rise buildings; the asphalt looks smooth and overall traffic is light and slow. To the left along the curb, a large silver box truck is stopped or creeping, narrowing the usable lane. Ahead in the same direction, a black van proceeds steadily and loosely sets the pace. A pedestrian wearing a white T-shirt and black pants pushes a trolley across the roadway from the left to the right, passing in front of the truck and crossing the ego lane. A parking garage entrance with Times P signage opens on the right, and several vehicles are parked along both curbs.", "hazard_reasoning": "A pedestrian wearing a white t-shirt with black pants is pushing a trolley crossing the street, from the left to the right side of the road. The pedestrian and trolley may move unpredictably into the vehicle's path, so the driver should be aware and adjust speed to avoid a potential collision."}
{"id": "train_02995", "split": "train", "clip_key": "titan_clip_47_000036_movie", "source": {"subset": "titan", "scenario": "clip_47", "frame": "000036"}, "frames": ["titan_clip_47_000036_movie_t-3.jpg", "titan_clip_47_000036_movie_t-2.jpg", "titan_clip_47_000036_movie_t-1.jpg", "titan_clip_47_000036_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of the pedestrian ahead", "environment_perception": "A narrow urban two-way street with a single lane, green edge strips, no median, and smooth pavement runs between close storefronts; traffic is light with no vehicles nearby. Ahead on the left, a pedestrian walks toward the ego vehicle along the roadway because there is no sidewalk, keeping to the edge but potentially encroaching into the lane. Orange cones line the left curb and further reduce the usable space.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, walking on the left side of the road, toward the ego car, because there is no sidewalk. The pedestrian may step into the travel lane unexpectedly, so the driver should be cautious to avoid a collision."}
{"id": "train_02996", "split": "train", "clip_key": "2020-0129-144857_006738_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "006738"}, "frames": ["2020-0129-144857_006738_movie_t-3.jpg", "2020-0129-144857_006738_movie_t-2.jpg", "2020-0129-144857_006738_movie_t-1.jpg", "2020-0129-144857_006738_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane per direction and no median runs between mid-rise buildings; the pavement is clean and dry and traffic is moderate with a short queue ahead. A black van directly ahead in the ego lane slows and creeps because of traffic congestion ahead, constraining the ego vehicle's pace. An oncoming white car approaches in the opposing lane to the right and passes steadily without drifting toward the center. On the right sidewalk, several cyclists and pedestrians move along and pause near storefronts behind a guardrail. A small blue truck is parked at the right curb on the opposing side, occupying the shoulder.", "hazard_reasoning": "A black van slowing down in the ego lane because of traffic congestion ahead. The black van's reduced speed indicates congestion ahead, so the driver should slow down to maintain a safe following distance and avoid collision."}
{"id": "train_02997", "split": "train", "clip_key": "2020-0206-101736_012013_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "012013"}, "frames": ["2020-0206-101736_012013_movie_t-3.jpg", "2020-0206-101736_012013_movie_t-2.jpg", "2020-0206-101736_012013_movie_t-1.jpg", "2020-0206-101736_012013_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist.", "environment_perception": "A narrow two-way urban street with one lane each way curves right between close buildings; the asphalt is slightly patched and traffic is light. On the right side ahead, a cyclist wearing a red sweater rides toward the ego-vehicle along the curb, an oncoming road user who may edge into the travel line as the bend tightens. Ahead near the left curb, a white van sits angled out from a space and pauses as if waiting to merge, slightly narrowing the lane. A red painted section with a white diamond marks a slow zone before the curve.", "hazard_reasoning": "There is a cyclist wearing a red sweater, cycling on the right side of the road, towards the ego car. The cyclist may enter the vehicle's path, so the driver should be aware of the cyclist to prevent a collision."}
{"id": "train_02998", "split": "train", "clip_key": "2020-0206-142535_044752_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "044752"}, "frames": ["2020-0206-142535_044752_movie_t-3.jpg", "2020-0206-142535_044752_movie_t-2.jpg", "2020-0206-142535_044752_movie_t-1.jpg", "2020-0206-142535_044752_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop due to congestion ahead.", "environment_perception": "An urban multi-lane arterial with at least two lanes in each direction and no physical median runs between mid-rise buildings; the pavement is clean and dry, and traffic is heavy and slow near an upcoming junction. A silver hatchback is stopped directly ahead in the ego lane because of congestion ahead, holding the ego vehicle at a standstill. Farther ahead in the same stream, a white van inches forward with the queue, constraining progress. In an adjacent same-direction lane, several cars roll slowly alongside the line, while oncoming traffic on the far side moves more freely.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe following distance and avoid a collision under these conditions."}
{"id": "train_02999", "split": "train", "clip_key": "2020-0226-101332_044481_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "044481"}, "frames": ["2020-0226-101332_044481_movie_t-3.jpg", "2020-0226-101332_044481_movie_t-2.jpg", "2020-0226-101332_044481_movie_t-1.jpg", "2020-0226-101332_044481_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A dense urban arterial passes under an overhead structure and opens into a wide signalized intersection; the pavement is dry and smooth, and traffic is moderate with steady flow in both directions. A white van moves forward directly ahead in the ego lane through the junction, setting the pace. In the adjacent right-side lanes, a large dump truck proceeds toward the intersection alongside the ego vehicle, partly obscuring the rightward view but staying in its lane. In the opposing lanes to the right, a box truck and several cars approach and slow at their stop line, remaining separated from the ego path. A small barriered island divides lanes near the center ahead.", "hazard_reasoning": "There is a white van moving forward in front of the ego car in the ego lane. You should follow the vehicle ahead to maintain a safe distance in case the van suddenly brakes."}
{"id": "train_03000", "split": "train", "clip_key": "titan_clip_1074_000546_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1074_000546_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1074_000546_movie_t-3_augB1.jpg", "titan_clip_1074_000546_movie_t-2_augB1.jpg", "titan_clip_1074_000546_movie_t-1_augB1.jpg", "titan_clip_1074_000546_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of construction worker ahead", "environment_perception": "An urban two-lane road climbs gently toward a small underpass, divided by a solid orange centerline; the pavement looks smooth and dry, and traffic is light with no same-direction or oncoming vehicles visible. Ahead, a construction worker is standing in the right oncoming lane near the centerline, holding a baton and facing the roadway, his position close to the ego path. Along the right curb, a work flatbed truck loaded with pipes is parked, protruding slightly into the oncoming lane and narrowing the corridor. The approach to the underpass remains clear in the ego lane.", "hazard_reasoning": "A construction worker is standing in the right lane. The worker may move unpredictably or obstruct the path, so the driver should be cautious and adjust speed accordingly to avoid collision."}
{"id": "train_03001", "split": "train", "clip_key": "titan_clip_96_000576_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_96_000576_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_96_000576_movie_t-3_augB1.jpg", "titan_clip_96_000576_movie_t-2_augB1.jpg", "titan_clip_96_000576_movie_t-1_augB1.jpg", "titan_clip_96_000576_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of crossing pedestrians", "environment_perception": "An urban two-way street with one narrow lane each direction has smooth pavement and no median; traffic is light to moderate and slows at a zebra crossing between tall buildings. A small white van ahead in the ego lane moves slowly toward the next block, constraining the pace. From the opposing lane at the right edge, an oncoming white van creeps past the crosswalk, reducing clearance as it approaches. On the right side of the road, a man wearing a black shirt and gray pants with a backpack walks away from the ego car along the crosswalk area near the curb, remaining close to the roadway. Parked vehicles line both curbs and tighten the usable width.", "hazard_reasoning": "A man wearing a black shirt and gray pants, carrying a backpack, and walking on the right side of the road, away from the ego car. The pedestrian could step into the ego-vehicle's path as it nears the intersection, so the driver should remain alert to their movement aligned with the warning content."}
{"id": "train_03002", "split": "train", "clip_key": "titan_clip_127_000042_movie", "source": {"subset": "titan", "scenario": "clip_127", "frame": "000042"}, "frames": ["titan_clip_127_000042_movie_t-3.jpg", "titan_clip_127_000042_movie_t-2.jpg", "titan_clip_127_000042_movie_t-1.jpg", "titan_clip_127_000042_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the stopped vehicle", "environment_perception": "An urban two-way street with mid-rise buildings, one lane per direction and no median, has smooth pavement and light traffic as the ego vehicle proceeds in the left lane toward an intersection. A black hatchback is stopped ahead in the ego lane near the intersection, constraining the ego's approach and waiting before moving. A small white truck approaches in the oncoming lane and continues through without deviating. A person on the right sidewalk walks near the curb but remains off the roadway. A silver van stands at the left curb partly intruding into the lane, locally narrowing the usable space.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, near the intersection. The stopped vehicle ahead may obstruct traffic flow and require early attention, so be cautious and adjust speed accordingly."}
{"id": "train_03003", "split": "train", "clip_key": "2020-0213-143552_040079_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "040079"}, "frames": ["2020-0213-143552_040079_movie_t-3.jpg", "2020-0213-143552_040079_movie_t-2.jpg", "2020-0213-143552_040079_movie_t-1.jpg", "2020-0213-143552_040079_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow", "environment_perception": "In an urban corridor beneath an elevated structure, the ego vehicle travels on a multi-lane road with a straight-through lane and a dedicated right-turn lane; the pavement is smooth and traffic is moderate. A large white box truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. A silver sedan to the right moves forward in the right-turn-only lane alongside the ego vehicle and does not enter the ego lane. On the left sidewalk, several pedestrians stand and walk near the curb by a side street, remaining off the roadway. Lane arrows indicate the center lane continues straight while the right lane is for turning right.", "hazard_reasoning": "There is a white truck slowing in the ego lane. Because the truck is reducing speed, it may require the ego vehicle to brake suddenly, so the driver should slow down to maintain a safe following distance."}
{"id": "train_03004", "split": "train", "clip_key": "2020-0220-151845_018298_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "018298"}, "frames": ["2020-0220-151845_018298_movie_t-3.jpg", "2020-0220-151845_018298_movie_t-2.jpg", "2020-0220-151845_018298_movie_t-1.jpg", "2020-0220-151845_018298_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes and smooth pavement carries moderate, steady traffic past tall buildings. Directly ahead in the ego lane, a white van cruises straight through the intersection on a green light, setting our pace. Slightly ahead to the right, a silver box truck continues in the adjacent lane at a similar speed while keeping parallel to the ego vehicle. On the left ahead, pedestrians cluster along the sidewalk behind railings near the shops, remaining off the roadway. A signal over the intersection shows green.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane, because of the green traffic light. The driver should follow the vehicle ahead to maintain a safe following distance and adapt to any signal changes."}
{"id": "train_03005", "split": "train", "clip_key": "titan_clip_1071_000318_movie", "source": {"subset": "titan", "scenario": "clip_1071", "frame": "000318"}, "frames": ["titan_clip_1071_000318_movie_t-3.jpg", "titan_clip_1071_000318_movie_t-2.jpg", "titan_clip_1071_000318_movie_t-1.jpg", "titan_clip_1071_000318_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "be cautious of cyclist ahead", "environment_perception": "An urban residential scene on a very narrow two-way road without a center line; the pavement is smooth and the lane bends slightly right with light traffic. A cyclist in a white T-shirt approaches ahead in the middle of the road, riding toward the ego vehicle and occupying the opposing path, which constrains passing space. Orange cones line the red-painted verge on the left near a building, narrowing the edge, while metal railings and overhanging trees on the right confine the corridor. No signals or speed signs are visible.", "hazard_reasoning": "There is a cyclist, wearing a white t-shirt, cycling in the middle of the road towards the ego car. The cyclist's position in the lane poses a collision risk if the driver does not adjust speed or path, so the driver should be alerted to their presence and proceed cautiously."}
{"id": "train_03006", "split": "train", "clip_key": "2020-0131-135401_010197_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "010197"}, "frames": ["2020-0131-135401_010197_movie_t-3.jpg", "2020-0131-135401_010197_movie_t-2.jpg", "2020-0131-135401_010197_movie_t-1.jpg", "2020-0131-135401_010197_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction runs between close buildings, divided by a solid orange centerline; the pavement looks smooth and traffic is light. A gray box truck directly ahead in the ego left lane is stopped for a red traffic signal at the intersection, holding the ego vehicle. A pedestrian stands on the left sidewalk near the truck's rear, remaining on the curb and not affecting the lane. The oncoming lane to the right is clear, and the signal head ahead shows red.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of a red traffic light. The ego-vehicle should stop to avoid colliding with the stationary truck at the red light."}
{"id": "train_03007", "split": "train", "clip_key": "titan_clip_110_000348_movie", "source": {"subset": "titan", "scenario": "clip_110", "frame": "000348"}, "frames": ["titan_clip_110_000348_movie_t-3.jpg", "titan_clip_110_000348_movie_t-2.jpg", "titan_clip_110_000348_movie_t-1.jpg", "titan_clip_110_000348_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Be cautious of cyclist ahead", "environment_perception": "An urban commercial street with a single narrow lane and no median runs past storefronts; the pavement is smooth and traffic is light and slow near a zebra crossing. On the left at the near curb, a cyclist wearing black pants leans against his bicycle and remains stationary by the sidewalk. On the right curb at the crosswalk, two pedestrians wait, one edging forward and potentially entering the ego vehicle's path. Farther ahead in the same lane, two workers push handcarts slowly along the roadway, constraining pace. Pedestrian crossing signs are visible, and several parked vans on the left narrow the usable lane.", "hazard_reasoning": "There is a cyclist wearing black pants and leaning against his bicycle, on the left side of the road. The driver should be cautious because the cyclist might merge into the lane unexpectedly, requiring timely speed adjustment to avoid a collision."}
{"id": "train_03008", "split": "train", "clip_key": "2020-0226-101332_027496_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "027496"}, "frames": ["2020-0226-101332_027496_movie_t-3.jpg", "2020-0226-101332_027496_movie_t-2.jpg", "2020-0226-101332_027496_movie_t-1.jpg", "2020-0226-101332_027496_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way road leads to a signalized intersection with smooth pavement and light traffic. The ego vehicle follows a gray truck directly ahead in the ego lane that is stopped at the junction, waiting to turn right and temporarily blocking the ego lane. In the adjacent right same-direction lane, a small van ahead to the right moves straight through the intersection, passing the halted queue. On the left corner, a pedestrian waits by the crosswalk and remains on the sidewalk.", "hazard_reasoning": "A gray truck is stopped in front of the ego car in the ego lane, because it is waiting to turn right. Since the truck is stationary to execute a right turn, the driver must stop to maintain a safe distance and avoid collision."}
{"id": "train_03009", "split": "train", "clip_key": "titan_clip_931_000048_movie", "source": {"subset": "titan", "scenario": "clip_931", "frame": "000048"}, "frames": ["titan_clip_931_000048_movie_t-3.jpg", "titan_clip_931_000048_movie_t-2.jpg", "titan_clip_931_000048_movie_t-1.jpg", "titan_clip_931_000048_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A tree-lined urban two-way street with one lane each direction and no median has smooth pavement and light, steady traffic. Ahead in the ego lane, a silver hatchback slows, constrained by a line of parked vehicles that narrows the available space and may enter the ego car's path. Farther ahead in the opposite lane, a sedan approaches toward the camera at a steady pace but remains in its lane. Along the right side of the roadway, a large box truck and several vans are stopped at the curb, creating a pinch point that influences the flow. No salient signals or posted speed signs are visible.", "hazard_reasoning": "There is a silver hatchback slowing in the ego lane, in front of the ego car, because of the parked vehicle on the left. The driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_03010", "split": "train", "clip_key": "titan_clip_275_000204_movie", "source": {"subset": "titan", "scenario": "clip_275", "frame": "000204"}, "frames": ["titan_clip_275_000204_movie_t-3.jpg", "titan_clip_275_000204_movie_t-2.jpg", "titan_clip_275_000204_movie_t-1.jpg", "titan_clip_275_000204_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian stepping into road", "environment_perception": "A narrow urban side street runs straight ahead between close buildings, a single lane without a centerline and with mostly smooth pavement; traffic is light with no moving vehicles visible. On the left, a man in a black shirt and beige pants steps off the curb from the construction area into the road and moves toward the lane, and may enter the ego lane. On the right by a shuttered storefront, parked bicycles and assorted items intrude slightly into the roadway, while orange cones and fencing line the left-side work zone.", "hazard_reasoning": "There is a man wearing a black shirt and beige pants, and stepping off of the curb into the road, on the left side of the road. The pedestrian may enter the vehicle's path unexpectedly, so the driver should exercise caution and be prepared to adjust speed."}
{"id": "train_03011", "split": "train", "clip_key": "2020-0129-105040_061438_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061438"}, "frames": ["2020-0129-105040_061438_movie_t-3.jpg", "2020-0129-105040_061438_movie_t-2.jpg", "2020-0129-105040_061438_movie_t-1.jpg", "2020-0129-105040_061438_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian", "environment_perception": "A narrow urban two-way street with red-painted shoulders and no centerline stretches ahead, the pavement smooth and partly shaded, and traffic is light with no moving vehicles nearby. On the left edge near the curb, a pedestrian in a dark jacket walks toward the ego vehicle along the red shoulder and could edge into the travel lane as the roadway narrows. On the right side by a utility pole, another pedestrian stands at the curb with bags, waiting and watching the road but remaining outside the lane. Bicycles are densely parked along the left storefronts and poles line both sides, tightening the usable width and creating minor roadside obstacles. No traffic signals or notable signs affect movement in view.", "hazard_reasoning": "There is a pedestrian wearing a black jacket, walking on the left side of the road, towards the ego car. The driver should be cautious as the pedestrian may step into the lane unexpectedly."}
{"id": "train_03012", "split": "train", "clip_key": "titan_clip_549_000444_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_549_000444_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_549_000444_movie_t-3_augB1.jpg", "titan_clip_549_000444_movie_t-2_augB1.jpg", "titan_clip_549_000444_movie_t-1_augB1.jpg", "titan_clip_549_000444_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "A narrow urban one-lane street lined with shops has smooth pavement and no median; vehicle traffic is light while pedestrian activity is heavy. Ahead in the center of the lane, a backpacked pedestrian walks away from the ego in the middle of the road, effectively occupying the path as the sidewalks appear congested. Near the right edge, two pedestrians walk toward the ego partly in the carriageway, reducing clearance along the usable lane. Farther ahead, a small group of pedestrians continues in the same direction along the road, remaining in front of the ego's intended path. An open parking-garage entrance and nearby signboards on the left further tighten the corridor.", "hazard_reasoning": "There is a lady, wearing a white t-shirt and a brown skirt, carrying a backpack, walking in the middle of the road, away from the ego car, because the sidewalk is congested. The driver should manoeuvre carefully around the pedestrian to avoid a collision and ensure safety."}
{"id": "train_03013", "split": "train", "clip_key": "2020-0226-101332_061383_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "061383"}, "frames": ["2020-0226-101332_061383_movie_t-3.jpg", "2020-0226-101332_061383_movie_t-2.jpg", "2020-0226-101332_061383_movie_t-1.jpg", "2020-0226-101332_061383_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes and metal railings along the right runs between midrise buildings; the asphalt is smooth and traffic is heavy, queuing at an intersection. A gray van directly ahead in the ego lane remains stopped for a red light, holding the ego car. To the immediate left, a small white van is alongside and halted in its lane, limiting a left merge. On the right, a white minibus slightly ahead in the next lane slows to a stop, closing the right-side gap.", "hazard_reasoning": "There is a gray van stopped in the ego lane, in front of the ego car, because of a red traffic light. You must stop to avoid colliding with the stationary van and comply with the red signal."}
{"id": "train_03014", "split": "train", "clip_key": "titan_clip_55_000318_movie", "source": {"subset": "titan", "scenario": "clip_55", "frame": "000318"}, "frames": ["titan_clip_55_000318_movie_t-3.jpg", "titan_clip_55_000318_movie_t-2.jpg", "titan_clip_55_000318_movie_t-1.jpg", "titan_clip_55_000318_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid hitting the stopped bus", "environment_perception": "An urban two-way street with a single lane per direction and no median runs between shops; the asphalt and zebra crossing are clear, and traffic is light but briefly halted. Ahead in the ego lane, a green bus is stopped at the intersection for a stop sign, blocking the path and controlling the ego vehicle's pace. On the left sidewalk by the crosswalk, a pedestrian waits near the curb and may step out once vehicles move. On the right side near the intersection, a white truck and several vans are parked, narrowing sightlines to potential oncoming traffic but remaining stationary.", "hazard_reasoning": "There is a green bus stopped in front of the ego-car, in the ego lane, because of the stop sign ahead at the intersection. The driver should stop to maintain a safe distance and avoid rear-ending the stopped bus."}
{"id": "train_03015", "split": "train", "clip_key": "titan_clip_1239_000126_movie", "source": {"subset": "titan", "scenario": "clip_1239", "frame": "000126"}, "frames": ["titan_clip_1239_000126_movie_t-3.jpg", "titan_clip_1239_000126_movie_t-2.jpg", "titan_clip_1239_000126_movie_t-1.jpg", "titan_clip_1239_000126_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "An urban residential street ascends on a narrow two-way road with a single lane in each direction, no median, and smooth pavement; traffic is very light with no moving vehicles visible. The ego-vehicle continues in the left lane with clear space ahead and no oncoming traffic. A white van is parked to the right inside a parking bay and does not intrude into the roadway. Short flexible posts line the left edge farther ahead to guide separation of directions. There is an orange and white traffic cone on the left side of the road near the curb. Parking signs are visible on the right, and no signals appear.", "hazard_reasoning": "There is an orange and white traffic cone on the left side of the road. This cone partially obstructs your driving path and could cause a collision if not avoided, so you should manoeuvre carefully around it."}
{"id": "train_03016", "split": "train", "clip_key": "2020-0131-135401_012681_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "012681"}, "frames": ["2020-0131-135401_012681_movie_t-3.jpg", "2020-0131-135401_012681_movie_t-2.jpg", "2020-0131-135401_012681_movie_t-1.jpg", "2020-0131-135401_012681_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each way and a yellow centerline runs between mid-rise buildings; the pavement looks smooth and traffic is moderate with steady oncoming cars. Ahead in the ego lane, a small white box truck proceeds slowly, constraining the ego vehicle's pace. A cyclist wearing a brown jacket rides ahead along the left side of the road, moving away from the ego car to pass a parked vehicle on the left and edging toward the travel lane. A pedestrian waits on the left curb at the zebra crossing, facing the roadway. Parked vehicles line both sides near the intersection, slightly narrowing the usable lane.", "hazard_reasoning": "There is a cyclist wearing a brown jacket, cycling on the left side of the road, away from the ego car, because of the parked vehicle on the left. With parked vehicles forcing the cyclist closer to the driving lane, the driver should slow down to maintain a safe distance and avoid collision."}
{"id": "train_03017", "split": "train", "clip_key": "titan_clip_186_000144_movie", "source": {"subset": "titan", "scenario": "clip_186", "frame": "000144"}, "frames": ["titan_clip_186_000144_movie_t-3.jpg", "titan_clip_186_000144_movie_t-2.jpg", "titan_clip_186_000144_movie_t-1.jpg", "titan_clip_186_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with no median and coarse asphalt runs between tall buildings, with light traffic in the ego direction. Ahead in the same lane, a white van is stopped near the center of the roadway, limiting the ego vehicle's progression. On the right side of the road, a pedestrian wearing a white shirt and black pants walks away from the ego car along the curbside. Parked cars, including a silver hatchback on the left in a marked bay, further narrow the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the right side of the road, away from the ego car. Because the sidewalk is partially obstructed by greenery, the pedestrian could unexpectedly step into the lane, so the driver should manoeuvre around the pedestrian to maintain safety."}
{"id": "train_03018", "split": "train", "clip_key": "2020-0129-144857_080975_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "080975"}, "frames": ["2020-0129-144857_080975_movie_t-3.jpg", "2020-0129-144857_080975_movie_t-2.jpg", "2020-0129-144857_080975_movie_t-1.jpg", "2020-0129-144857_080975_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with two lanes in the ego direction and a channelized right-turn lane on the right runs on smooth asphalt, with heavy stop-and-go flow. A white sedan is stopped directly ahead in the ego lane because congestion stacks up, holding the ego vehicle. To the right, a flatbed truck and a red bus wait in the adjacent lane, edging forward with the queue and partly blocking the view toward the junction. Farther ahead in that lane, a dark hatchback slows behind traffic without changing lanes. Overhead signals indicate a signalized intersection ahead, and a guardrail lines the right edge beside the turn lane.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The sedan's sudden stop indicates traffic ahead has stalled, so you must stop now to avoid a collision with the stationary vehicle."}
{"id": "train_03019", "split": "train", "clip_key": "2020-0210-101957_039881_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "039881"}, "frames": ["2020-0210-101957_039881_movie_t-3.jpg", "2020-0210-101957_039881_movie_t-2.jpg", "2020-0210-101957_039881_movie_t-1.jpg", "2020-0210-101957_039881_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs straight on good pavement; traffic our way is light while the opposite side carries moderate flow behind a guardrail median. A blue pickup truck drives alongside on the immediate left in the curbside lane, keeping pace with the ego vehicle and narrowing lateral clearance. Far ahead in the same lane, a small truck proceeds steadily and loosely sets the pace as the road stays clear. On the opposite carriageway to the right, a bus and several cars approach behind the barrier and do not influence the ego path. A roadside sign shows 50 km/h.", "hazard_reasoning": "There is a blue pickup truck driving alongside the ego car, in the left lane. Its close proximity may lead to an unexpected lane change or restrict the ego vehicle's maneuvering space, so the driver should be cautious of its potential movements."}
{"id": "train_03020", "split": "train", "clip_key": "titan_clip_1010_000078_movie", "source": {"subset": "titan", "scenario": "clip_1010", "frame": "000078"}, "frames": ["titan_clip_1010_000078_movie_t-3.jpg", "titan_clip_1010_000078_movie_t-2.jpg", "titan_clip_1010_000078_movie_t-1.jpg", "titan_clip_1010_000078_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shopping street with a narrow single lane and no divider appears on wet pavement, with very light vehicle traffic but heavy pedestrian flow. Bollards and storefronts line both sides as foot traffic increases ahead. Several pedestrians walk and cross in the lane in front of the ego car, occupying the roadway and setting the pace. On the right edge near the curb, a pedestrian wearing black pants and carrying a yellow bag walks toward the ego car and edges toward the lane, approaching its path. Farther ahead in the center, a person in dark clothing moves from right to left across the road in front of the ego line. Parked bicycles and small bits of litter sit along the edges of the street.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying a yellow bag, walking on the right side of the road, toward the ego car. The driver should carefully maneuver around the pedestrian to avoid a potential collision."}
{"id": "train_03021", "split": "train", "clip_key": "2020-0220-102630_000011_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "000011"}, "frames": ["2020-0220-102630_000011_movie_t-3.jpg", "2020-0220-102630_000011_movie_t-2.jpg", "2020-0220-102630_000011_movie_t-1.jpg", "2020-0220-102630_000011_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road beneath an elevated structure has smooth pavement and heavy, stop-and-go traffic. A black sedan immediately ahead in the ego lane is stopped because of congestion, keeping the ego car stationary. Farther ahead in the queue, a white box truck waits in the same direction, contributing to the backup. To the left, several taxis and cars line up in adjacent same-direction lanes, while to the right a white SUV idles beside the ego vehicle without merging.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane, because of traffic congestion. You should stop to maintain a safe following distance and avoid a collision."}
{"id": "train_03022", "split": "train", "clip_key": "2020-0226-101332_028718_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "028718"}, "frames": ["2020-0226-101332_028718_movie_t-3.jpg", "2020-0226-101332_028718_movie_t-2.jpg", "2020-0226-101332_028718_movie_t-1.jpg", "2020-0226-101332_028718_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban Japanese street with one lane in each direction and no median has smooth pavement and light traffic as the ego car approaches a signalized intersection. A gray truck directly ahead in the ego lane turns left into the cross street, momentarily determining the ego vehicle's pace. The oncoming lane is clear nearby. A pedestrian stands on the left sidewalk beside a fenced area, and another person with a bicycle moves along the right sidewalk behind the guardrail near a building entrance. Overhead traffic lights hang at the junction, and roadside parking and guidance signs are visible on the left.", "hazard_reasoning": "There is a gray truck turning, in front of the ego car, to the left side of the intersection. The truck's left turn crosses your travel path, requiring you to yield to avoid a collision."}
{"id": "train_03023", "split": "train", "clip_key": "2020-0226-140503_105148_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "105148"}, "frames": ["2020-0226-140503_105148_movie_t-3.jpg", "2020-0226-140503_105148_movie_t-2.jpg", "2020-0226-140503_105148_movie_t-1.jpg", "2020-0226-140503_105148_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes runs alongside low buildings and trees, separated from oncoming traffic by a narrow planted median; the pavement appears smooth and traffic is moderate and steady. A gray box truck ahead in the ego lane drives away from the camera at a steady pace, effectively leading the lane. Another similar truck travels slightly ahead in the left adjacent lane, continuing straight alongside. Oncoming cars and a larger truck flow smoothly on the opposite side of the median. A speed-limit sign is visible overhead.", "hazard_reasoning": "There is a gray truck driving in the ego lane away from the ego car. The gray truck ahead could brake suddenly or change speed, so be aware to maintain a safe following distance."}
{"id": "train_03024", "split": "train", "clip_key": "2020-0203-114632_089787_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "089787"}, "frames": ["2020-0203-114632_089787_movie_t-3.jpg", "2020-0203-114632_089787_movie_t-2.jpg", "2020-0203-114632_089787_movie_t-1.jpg", "2020-0203-114632_089787_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs under an elevated viaduct, with three same-direction lanes, clear markings, and smooth pavement; traffic is moderate and moves steadily through a signalized junction. A white mini-van directly ahead in the ego lane accelerates as the light ahead shows green, increasing the gap in our lane. To the right, a large cargo truck travels alongside in the adjacent lane at a similar pace, restricting space on that side. To the left, a dark sedan slightly ahead continues straight in its lane at steady speed, remaining just ahead of the ego vehicle.", "hazard_reasoning": "There is a white mini-van accelerating in the ego lane, because of the green traffic light. The driver should start moving to maintain traffic flow under the green signal."}
{"id": "train_03025", "split": "train", "clip_key": "2020-0204-150838_064022_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "064022"}, "frames": ["2020-0204-150838_064022_movie_t-3.jpg", "2020-0204-150838_064022_movie_t-2.jpg", "2020-0204-150838_064022_movie_t-1.jpg", "2020-0204-150838_064022_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban dual-carriageway with two same-direction lanes is bordered by guardrails, with a viaduct running along the right; the pavement is smooth and traffic is light to moderate, flowing steadily. A black dump truck ahead in the left lane travels away from the ego vehicle. Another dump truck is directly ahead in the ego lane at medium distance, continuing straight at a similar speed and effectively determining the ego car's pace. Along the far left edge, the front of a large truck runs alongside in the adjacent lane, slightly ahead of the ego vehicle. No traffic signals or unusual signage are visible, and there are no obstacles in the roadway.", "hazard_reasoning": "There is a black truck driving in the left lane away from the ego car. The truck ahead partially obstructs the view of the road, reducing visibility and potentially hiding hazards, so the driver should maintain extra caution under this situation."}
{"id": "train_03026", "split": "train", "clip_key": "2020-0204-103442_089801_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "089801"}, "frames": ["2020-0204-103442_089801_movie_t-3.jpg", "2020-0204-103442_089801_movie_t-2.jpg", "2020-0204-103442_089801_movie_t-1.jpg", "2020-0204-103442_089801_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of the cyclist", "environment_perception": "An urban two-lane bridge carries light two-way traffic; the ego travels in the left lane, divided from oncoming traffic by a yellow centerline with flexible posts on worn pavement. A black SUV ahead in the ego lane proceeds steadily and constrains the ego car's pace. A cyclist rides along the far-left edge near the guardrail, not in a marked bike lane, and may encroach into the ego lane. In the opposing lane a white van approaches, followed by another car, continuing straight past the ego vehicle. Chevron boards, barriers, and a tall crane indicate roadside construction along the route.", "hazard_reasoning": "There is a cyclist riding on the left side of the road, to the left of the ego-car, because there is a bike lane. The cyclist could drift into the vehicle lane unexpectedly, so be aware of the cyclist."}
{"id": "train_03027", "split": "train", "clip_key": "2020-0218-103119_048152_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "048152"}, "frames": ["2020-0218-103119_048152_movie_t-3.jpg", "2020-0218-103119_048152_movie_t-2.jpg", "2020-0218-103119_048152_movie_t-1.jpg", "2020-0218-103119_048152_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with two same-direction lanes is divided from oncoming traffic by a narrow median; the pavement is dry and smooth, and traffic is moderate, bunching at the intersection. A white box truck directly ahead in the ego lane slows and stops for the red traffic light, setting the pace. To its left, a red sedan in the adjacent same-direction lane decelerates alongside and comes nearly to a stop beside the truck. In the oncoming lanes to the right, a beige van creeps toward the junction behind the median and remains separate from the ego's path. Overhead signals ahead display red.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane, because of red traffic lights. The truck's reduction in speed and its size limit forward visibility and increase the risk of collision, so the driver should slow down."}
{"id": "train_03028", "split": "train", "clip_key": "2020-0205-103411_109253_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "109253"}, "frames": ["2020-0205-103411_109253_movie_t-3.jpg", "2020-0205-103411_109253_movie_t-2.jpg", "2020-0205-103411_109253_movie_t-1.jpg", "2020-0205-103411_109253_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs straight beneath a pedestrian footbridge; the asphalt is dry and smooth, and traffic is moderate with a brief slowdown ahead. A white kei van directly ahead in the ego lane slows as a queue forms farther forward, constraining the ego car's pace. To the left, a dark van in the curb lane continues steadily alongside and slightly ahead without changing lanes. On the right, several vehicles, including a white van, travel toward us in the oncoming lanes, clearly separated by painted markings. No obstacles or work zones are visible.", "hazard_reasoning": "There's a white van slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance due to the slowing traffic."}
{"id": "train_03029", "split": "train", "clip_key": "titan_clip_269_000264_movie", "source": {"subset": "titan", "scenario": "clip_269", "frame": "000264"}, "frames": ["titan_clip_269_000264_movie_t-3.jpg", "titan_clip_269_000264_movie_t-2.jpg", "titan_clip_269_000264_movie_t-1.jpg", "titan_clip_269_000264_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked van", "environment_perception": "A narrow two-way urban residential street with no median and smooth dry pavement shows light traffic. A white van is parked along the left curb ahead, occupying part of the lane and constraining the ego vehicle's path. A white car sits at the near left edge with its front protruding slightly into the roadway, close to the ego lane. Bags of trash pile against the right-side building and a parked bicycle stands by the doorway, both off the carriageway.", "hazard_reasoning": "There is a white van parked on the left side of the road. The parked van reduces the usable lane width and may obstruct traffic flow, so the driver should be aware to avoid a collision."}
{"id": "train_03030", "split": "train", "clip_key": "2020-0218-103119_039005_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "039005"}, "frames": ["2020-0218-103119_039005_movie_t-3.jpg", "2020-0218-103119_039005_movie_t-2.jpg", "2020-0218-103119_039005_movie_t-1.jpg", "2020-0218-103119_039005_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road between mid-rise buildings has smooth pavement; traffic is light in the left through lane while the two right lanes move slowly in a short queue. Ahead in the ego lane, a white box truck drives away from the ego car, accelerating because the space in front of it is clear. In the adjacent right lanes, several cars advance slowly toward a junction, forming a rolling queue that stays within its lanes and does not enter the ego path.", "hazard_reasoning": "There is a white truck driving away from the ego car, in the ego lane, because the road ahead is clear, in front of the truck. Following the vehicle ahead helps maintain a safe distance to respond if it brakes suddenly."}
{"id": "train_03031", "split": "train", "clip_key": "2020-0203-114632_090768_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "090768"}, "frames": ["2020-0203-114632_090768_movie_t-3.jpg", "2020-0203-114632_090768_movie_t-2.jpg", "2020-0203-114632_090768_movie_t-1.jpg", "2020-0203-114632_090768_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light ahead", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with three same-direction lanes, no median visible, smooth pavement, and heavy traffic queued at a signal. A white hatchback directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. A large box truck in the lane to the right waits alongside, close to the ego and constraining lateral space. In the far left lane ahead, a blue refuse truck and a small van are also stopped in the queue. The traffic signal ahead shows red.", "hazard_reasoning": "There is yellow mid-SUV stopped in the ego lane because of a red light ahead. You should stop to avoid colliding with the stationary SUV at the red light."}
{"id": "train_03032", "split": "train", "clip_key": "2020-0227-104226_006352_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "006352"}, "frames": ["2020-0227-104226_006352_movie_t-3.jpg", "2020-0227-104226_006352_movie_t-2.jpg", "2020-0227-104226_006352_movie_t-1.jpg", "2020-0227-104226_006352_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A dense urban arterial with multiple same-direction lanes and a raised median on the right has smooth pavement and heavy traffic queuing at an intersection. A white minivan directly ahead in the ego lane is stopped at a red light, holding the ego car in place. To the right, a small white box truck waits in the curb lane by the crosswalk, limiting room to merge. A large crowd of pedestrians streams across the wide crosswalk in front of the stopped traffic during the red phase. Additional cars stand in a queue in the lane to the left. An overhead signal shows red for vehicles.", "hazard_reasoning": "There is a white minivan stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver must stop to avoid colliding with the halted vehicle ahead."}
{"id": "train_03033", "split": "train", "clip_key": "2020-0129-144857_041591_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "041591"}, "frames": ["2020-0129-144857_041591_movie_t-3.jpg", "2020-0129-144857_041591_movie_t-2.jpg", "2020-0129-144857_041591_movie_t-1.jpg", "2020-0129-144857_041591_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial runs under an elevated structure, with two same-direction lanes and a right-side guardrail; the pavement is dry and smooth, and traffic is slow-moving and dense. A black minivan directly ahead in the ego lane slows because the truck farther ahead is slowing, so it constrains the ego vehicle's pace. A box truck further ahead in the same lane decelerates toward the queue. In the left adjacent lane, a white sedan and a small white van slightly ahead creep forward, limiting room to merge. A fenced construction area lines the right edge.", "hazard_reasoning": "There is a black minivan slowing in the ego lane, because of the truck ahead slowing. The minivan's deceleration indicates a sudden slowdown ahead, so reduce speed to maintain a safe distance."}
{"id": "train_03034", "split": "train", "clip_key": "titan_clip_317_000150_movie", "source": {"subset": "titan", "scenario": "clip_317", "frame": "000150"}, "frames": ["titan_clip_317_000150_movie_t-3.jpg", "titan_clip_317_000150_movie_t-2.jpg", "titan_clip_317_000150_movie_t-1.jpg", "titan_clip_317_000150_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van on your left.", "environment_perception": "An urban commercial street with a single narrow lane and curbs on both sides is seen, with smooth pavement and light, slow-moving traffic. A white van is parked along the left curb ahead being unloaded, narrowing the lane. A small black delivery truck proceeds ahead in the ego lane at low speed, setting the pace. A white sedan sits near the left edge close to the ego and slightly encroaches into the travel lane, reducing its available width. Several pedestrians walk on the right sidewalk near storefronts and by the crosswalk ahead, while remaining off the roadway.", "hazard_reasoning": "There is a white van parked on the left side of the road, because it is being unloaded. Its presence could obstruct part of the lane and cause pedestrians or workers to step into traffic, so the driver should anticipate potential obstructions and changes ahead."}
{"id": "train_03035", "split": "train", "clip_key": "titan_clip_9_000570_movie", "source": {"subset": "titan", "scenario": "clip_9", "frame": "000570"}, "frames": ["titan_clip_9_000570_movie_t-3.jpg", "titan_clip_9_000570_movie_t-2.jpg", "titan_clip_9_000570_movie_t-1.jpg", "titan_clip_9_000570_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban intersection with tall buildings leads into a narrow side street ahead; the ego vehicle approaches a single-lane roadway with no divider and smooth pavement, with light vehicular flow but heavy pedestrian activity. In the middle of the crosswalk ahead, a pedestrian wearing a white T-shirt and black pants crosses from the right to the left across the ego lane. On the left foreground, two pedestrians step off the curb and begin crossing toward the right, further occupying the lane. Farther ahead beyond the crosswalk, a white delivery truck sits near the center of the narrow street, limiting the available path. A pedestrian crossing sign stands on the right corner.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and black pants, in the middle of the road, crossing the street, from the right sight of the street to the left side. The pedestrian's unexpected presence on the roadway and limited sightlines due to the parked truck increase collision risk, so the driver should stop immediately to ensure safety."}
{"id": "train_03036", "split": "train", "clip_key": "2020-0210-101957_020756_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "020756"}, "frames": ["2020-0210-101957_020756_movie_t-3.jpg", "2020-0210-101957_020756_movie_t-2.jpg", "2020-0210-101957_020756_movie_t-1.jpg", "2020-0210-101957_020756_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial with two lanes in the ego direction, dashed lane markings, and smooth pavement carries moderate traffic as mid-rise buildings line both sides and a distant signalized intersection comes into view. Ahead in the ego lane, a black motorcycle travels straight and gradually pulls away from the ego car because the road ahead is clear. In the adjacent right lane, a white SUV slightly ahead continues straight at a steady pace without drifting. Farther ahead in the right lane, a white box truck proceeds toward the intersection and sets the pace for vehicles in that lane. No obstacles or oncoming vehicles are visible along the stretch.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane, away from the ego car, because the road ahead is clear. The motorcycle could brake suddenly or slow down unexpectedly, so the driver should maintain a safe following distance under this situation."}
{"id": "train_03037", "split": "train", "clip_key": "titan_clip_869_000102_movie", "source": {"subset": "titan", "scenario": "clip_869", "frame": "000102"}, "frames": ["titan_clip_869_000102_movie_t-3.jpg", "titan_clip_869_000102_movie_t-2.jpg", "titan_clip_869_000102_movie_t-1.jpg", "titan_clip_869_000102_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban commercial street with shops lines a narrow single-lane road without a median, the pavement is smooth, and vehicle flow is light amid heavy foot traffic. Ahead, a pedestrian with a backpack steps from the right-side storefront and walks diagonally toward the ego car, potentially entering its path. On the left, a small group of pedestrians stands near a restaurant and edges toward the roadway, reducing clearance. Close to the camera, a white van is stopped along the left curb and slightly protrudes into the lane, further narrowing space. Orange safety cones and a convenience-store entrance occupy the right edge, with no traffic signals visible.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking toward the ego car, on the left side of the road. The pedestrian's path brings them into the vehicle's lane, so the driver should manoeuvre carefully to avoid a collision."}
{"id": "train_03038", "split": "train", "clip_key": "titan_clip_331_000156_movie", "source": {"subset": "titan", "scenario": "clip_331", "frame": "000156"}, "frames": ["titan_clip_331_000156_movie_t-3.jpg", "titan_clip_331_000156_movie_t-2.jpg", "titan_clip_331_000156_movie_t-1.jpg", "titan_clip_331_000156_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow shared lane and block-paved surface appears clean and dry, with only pedestrian traffic at a light to moderate flow and no visible vehicles. On the right side near the storefronts, a man wearing a black shirt and black pants walks toward the ego vehicle along the edge of the carriageway and may drift into its path. Along the left frontage very close to the camera, a man using a cane approaches beside the windows and could step into the lane. Ahead in the center, two pedestrians walk away in the middle of the lane, occupying the path and limiting progress. Menu boards and signs along the right wall slightly narrow the usable corridor.", "hazard_reasoning": "There is a man wearing a black shirt and black pants and walking on the right side of the road, toward the ego car. The pedestrian is approaching the vehicle's path, so the driver should slow down to avoid a potential collision."}
{"id": "train_03039", "split": "train", "clip_key": "titan_clip_315_000120_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_315_000120_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_315_000120_movie_t-3_augB1.jpg", "titan_clip_315_000120_movie_t-2_augB1.jpg", "titan_clip_315_000120_movie_t-1_augB1.jpg", "titan_clip_315_000120_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian.", "environment_perception": "A dense urban shopping street with no lane markings and block-paved surface forms a very narrow single-lane passage between storefronts, with no divider and no visible vehicular traffic. A pedestrian wearing a white shirt and black pants crosses directly in front of the ego-vehicle toward the left side, walking across the path and occupying the ego lane. Farther ahead on the right, another pedestrian in light clothing moves slowly along the storefront edge without entering the lane. A few more pedestrians appear in the distance along the center of the street, walking away and not interacting with the vehicle. Store displays and signboards protrude at the edges, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, crossing to the left side of the road, in front of the ego car. You should yield because the pedestrian is crossing directly ahead and may enter your path."}
{"id": "train_03040", "split": "train", "clip_key": "2020-0220-151845_011749_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "011749"}, "frames": ["2020-0220-151845_011749_movie_t-3.jpg", "2020-0220-151845_011749_movie_t-2.jpg", "2020-0220-151845_011749_movie_t-1.jpg", "2020-0220-151845_011749_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a raised median and smooth pavement carries heavy, slow traffic; a red bus lane on the left tapers toward the through lanes. A black van ahead in the ego lane slows because of congestion ahead, directly constraining the ego car's pace. Slightly ahead to the left, a white van creeps along where the red lane merges and edges right, potentially entering the ego lane. Ahead to the right, a yellow car moves left across lane markings toward the center, reducing the available gap near the ego vehicle's path. Overhead directional signs span the roadway while oncoming lanes are separated by the median.", "hazard_reasoning": "There is a black van slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed traffic."}
{"id": "train_03041", "split": "train", "clip_key": "2020-0213-143552_089901_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "089901"}, "frames": ["2020-0213-143552_089901_movie_t-3.jpg", "2020-0213-143552_089901_movie_t-2.jpg", "2020-0213-143552_089901_movie_t-1.jpg", "2020-0213-143552_089901_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, bordered by a concrete barrier on the right; the pavement is dry and smooth, and traffic is light to moderate with steady flow. A white truck ahead in the ego lane drives away at a steady speed, gradually increasing its gap. In the lane to the left, a large white box truck runs slightly ahead and maintains a similar pace, remaining parallel and relevant to the ego vehicle. Farther left, another truck continues straight well ahead without affecting the ego path. Overhead directional signs in Japanese appear ahead while closely spaced bridge pillars line the right edge.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. Following this vehicle at a safe distance helps maintain visibility and reaction time in case of sudden speed changes."}
{"id": "train_03042", "split": "train", "clip_key": "2020-0129-144857_043670_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "043670"}, "frames": ["2020-0129-144857_043670_movie_t-3.jpg", "2020-0129-144857_043670_movie_t-2.jpg", "2020-0129-144857_043670_movie_t-1.jpg", "2020-0129-144857_043670_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs under an elevated expressway, with two same-direction lanes and a right-side gore area beside a metal guardrail; the pavement is smooth and traffic moves slowly in pockets of congestion. A white box truck is directly ahead in the ego lane and slows because of traffic buildup, constraining the ego car's pace. In the left adjacent lane, a white hatchback draws level and continues straight, limiting the ego vehicle's ability to change lanes. Farther ahead in that left lane, another small white car proceeds with the slow flow. No salient traffic signals or signs are clearly visible, and structures and pillars line the right edge.", "hazard_reasoning": "There is a white truck slowing down in the ego lane in front of the ego car, because of traffic congestion. The driver should slow down to maintain a safe following distance and adapt to the reduced traffic flow ahead."}
{"id": "train_03043", "split": "train", "clip_key": "2020-0207-101955_017254_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "017254"}, "frames": ["2020-0207-101955_017254_movie_t-3.jpg", "2020-0207-101955_017254_movie_t-2.jpg", "2020-0207-101955_017254_movie_t-1.jpg", "2020-0207-101955_017254_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with multiple lanes in each direction approaches a large signalized intersection; there is no median, the pavement is in good condition with colored surfacing near the crosswalk, and traffic is heavy with vehicles queued. Directly ahead in the ego lane, a small brown-covered truck slows to a near stop because of congestion ahead, constraining the ego car's pace. To the right, a red SUV pulls slightly ahead and brakes in its lane as it lines up to continue straight. Farther right, a white van also queues near the stop line, remaining in its lane. Pedestrians wait on the left sidewalk near the crosswalk. Overhead traffic signals are visible above the junction.", "hazard_reasoning": "There is a brown truck slowing down in front of the ego-car, because of traffic congestion ahead. The truck's reduced speed due to congestion demands you slow down to maintain a safe following distance."}
{"id": "train_03044", "split": "train", "clip_key": "titan_clip_768_000126_movie", "source": {"subset": "titan", "scenario": "clip_768", "frame": "000126"}, "frames": ["titan_clip_768_000126_movie_t-3.jpg", "titan_clip_768_000126_movie_t-2.jpg", "titan_clip_768_000126_movie_t-1.jpg", "titan_clip_768_000126_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the parked van", "environment_perception": "An urban residential scene unfolds on a very narrow two-way road with no centerline, smooth pavement, and buildings tight to the curb; traffic is light with no moving vehicles visible. A black van is parked ahead along the left side facing the ego lane, stationary and slightly encroaching into the roadway, narrowing the space for the ego vehicle to pass. No other road users appear, and no signals or posted speed signs are visible. The corridor remains straight between walls and hedges.", "hazard_reasoning": "There is a black van parked on the left side of the road, facing the ego lane. The parked van may obstruct visibility and intrude into the lane, so the driver should exercise caution."}
{"id": "train_03045", "split": "train", "clip_key": "titan_clip_36_000324_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_36_000324_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_36_000324_movie_t-3_augB1.jpg", "titan_clip_36_000324_movie_t-2_augB1.jpg", "titan_clip_36_000324_movie_t-1_augB1.jpg", "titan_clip_36_000324_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "A narrow urban shared-lane street lined with mid-rise buildings has a block-paved surface and no center divider; vehicle traffic is light and slow. A small silver van ahead in the ego lane rolls forward at low speed, setting the pace as it passes through pedestrians. A pedestrian in a black T-shirt at the right edge steps off the sidewalk and crosses toward the left side of the road, potentially entering the ego vehicle's path. Another pedestrian in a blue shirt is already near the middle of the lane walking leftward across in front of the van. A man with a backpack on the left nears the curb and starts to cross toward the right, adding to the immediate crossing activity. A no-parking sign stands on the right.", "hazard_reasoning": "There is a pedestrian wearing a black T-shirt in the middle of the road, crossing to the left ride of the road. Under this situation, the driver should yield to the pedestrian to avoid a potential collision by giving them right of way."}
{"id": "train_03046", "split": "train", "clip_key": "titan_clip_1283_000306_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1283_000306_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1283_000306_movie_t-3_augB1.jpg", "titan_clip_1283_000306_movie_t-2_augB1.jpg", "titan_clip_1283_000306_movie_t-1_augB1.jpg", "titan_clip_1283_000306_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with shopfronts and an elevated structure ahead has smooth pavement and no divider; traffic is light with no oncoming vehicles visible. Ahead in the ego lane, a pedestrian wearing a brown shirt walks away from the car along the center of the lane, directly in the vehicle's path. Alongside him, a child crosses from the right to the left ahead, also moving away and staying in front of the car. On the right edge, a stopped delivery truck protrudes into the lane, narrowing the road where the pedestrians pass.", "hazard_reasoning": "There is a pedestrian wearing a brown shirt and walking in front of and away from the ego car. The pedestrian may step into the roadway unexpectedly from the sidewalk, so the driver should slow down to ensure sufficient reaction time."}
{"id": "train_03047", "split": "train", "clip_key": "2020-0204-103442_065754_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "065754"}, "frames": ["2020-0204-103442_065754_movie_t-3.jpg", "2020-0204-103442_065754_movie_t-2.jpg", "2020-0204-103442_065754_movie_t-1.jpg", "2020-0204-103442_065754_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane in each direction and no median stretches ahead on smooth pavement with light traffic. A black taxi directly ahead in the ego lane accelerates away, opening a small gap as the ego car follows. An oncoming white van approaches in its lane toward the distance, maintaining course without affecting the ego path. Pedestrians, including a bicyclist walking a bike on the left sidewalk and a person pushing a cart on the right sidewalk, move along behind guardrails and remain clear of the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03048", "split": "train", "clip_key": "2020-0203-114632_047892_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "047892"}, "frames": ["2020-0203-114632_047892_movie_t-3.jpg", "2020-0203-114632_047892_movie_t-2.jpg", "2020-0203-114632_047892_movie_t-1.jpg", "2020-0203-114632_047892_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street runs under an elevated structure, with a metal guardrail separating oncoming lanes to the right; the pavement is smooth and traffic is light and steady. A silver van ahead in the ego lane drives away from the camera, continuing straight and effectively setting the ego vehicle's pace. A motorbike ahead-left travels in the same direction near the lane center and could drift into the ego lane as it proceeds. On the far right beyond the guardrail, two cars approach as oncoming traffic but remain physically separated. A pedestrian on the left sidewalk walks along the curb without stepping into the road.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03049", "split": "train", "clip_key": "2020-0220-102630_113598_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "113598"}, "frames": ["2020-0220-102630_113598_movie_t-3.jpg", "2020-0220-102630_113598_movie_t-2.jpg", "2020-0220-102630_113598_movie_t-1.jpg", "2020-0220-102630_113598_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction and a painted centerline appears smooth, and traffic is light to moderate. A red delivery scooter is stopped on the left edge of the ego lane just ahead, creating a brief obstruction. A black hatchback directly ahead in the ego lane drifts right and slows to pass the scooter, constraining the ego car's pace. An oncoming white truck proceeds straight in the opposite lane, reducing available space for overtaking. A yellow roadside construction sign stands on the left, with no active work visible.", "hazard_reasoning": "There is a red scooter stopped in the ego lane in front of the ego car. The driver should stop to avoid a rear-end collision with the stationary scooter."}
{"id": "train_03050", "split": "train", "clip_key": "2020-0225-145150_016056_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "016056"}, "frames": ["2020-0225-145150_016056_movie_t-3.jpg", "2020-0225-145150_016056_movie_t-2.jpg", "2020-0225-145150_016056_movie_t-1.jpg", "2020-0225-145150_016056_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial approaches a signalized intersection with two same-direction lanes and no median; the pavement is dry and well marked, and traffic is queued. A gray van directly ahead in the ego lane is stopped because the overhead light is red, holding the ego-vehicle in place. A white van alongside in the adjacent right lane slows to a stop beside the ego-vehicle, limiting room to change lanes. Farther ahead in the right lane, another dark car waits near the intersection as part of the queue. The overhead signal facing the ego shows solid red, and no pedestrians or cyclists are visible.", "hazard_reasoning": "There is a gray van stopped in the ego lane because of a red traffic light ahead. The vehicle ahead is halted at a red light, so the driver must stop to maintain a safe distance and comply with the traffic signal."}
{"id": "train_03051", "split": "train", "clip_key": "titan_clip_380_000120_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_380_000120_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_380_000120_movie_t-3_augB1.jpg", "titan_clip_380_000120_movie_t-2_augB1.jpg", "titan_clip_380_000120_movie_t-1_augB1.jpg", "titan_clip_380_000120_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian in lane", "environment_perception": "An urban side street with a single narrow two-way lane paved with interlocking bricks has no center divider and storefronts close to the curb. Traffic is light and slow, shaped mainly by pedestrians in the roadway. Ahead in the ego lane, a male pedestrian in a white shirt carrying a bag walks away from the car along the center, constraining the ego vehicle's pace. Farther ahead by the left curb, a white van is stopped while two people stand beside it, slightly narrowing the lane. At the right edge near the shops, another pedestrian lingers at the curb and steps toward the lane, potentially entering the ego path. A no-parking sign is posted on a pole to the left.", "hazard_reasoning": "There is a male pedestrian, wearing a white shirt, and carrying a bag, walking in front of, and away from the ego-car, in the ego lane. The pedestrian is moving directly ahead in the vehicle's lane, so the driver should be cautious and be prepared to slow down to avoid a collision."}
{"id": "train_03052", "split": "train", "clip_key": "titan_clip_132_000294_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_132_000294_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_132_000294_movie_t-3_augB1.jpg", "titan_clip_132_000294_movie_t-2_augB1.jpg", "titan_clip_132_000294_movie_t-1_augB1.jpg", "titan_clip_132_000294_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "An urban commercial side street with a single narrow lane and brick pavement runs straight between tall buildings, with light traffic and no median. Ahead, a pedestrian wearing a black vest and brown pants walks in the middle of the road away from the ego vehicle to pass a black minivan stopped at the right curb that encroaches into the lane, so the walker remains in the ego path for several steps. The minivan is stationary and constrains the available space. On the left, a woman under an umbrella walks forward along the sidewalk near the curb. An orange traffic cone stands by the right curb next to the minivan, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a black vest and brown pants, walking in the middle of the road, away from the ego car, because of the parked vehicle. Stop immediately to avoid hitting the pedestrian walking in your lane."}
{"id": "train_03053", "split": "train", "clip_key": "titan_clip_444_000396_movie", "source": {"subset": "titan", "scenario": "clip_444", "frame": "000396"}, "frames": ["titan_clip_444_000396_movie_t-3.jpg", "titan_clip_444_000396_movie_t-2.jpg", "titan_clip_444_000396_movie_t-1.jpg", "titan_clip_444_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban back street with a single narrow lane and no center line runs between shops; the block-paved surface is mostly dry but wet along the right, and traffic is light. On the right side just ahead, a worker wearing a helmet stands with a hose and cleans the street, close to the travel path. Far ahead in the same lane, a small box truck is stopped, constraining the pace of following vehicles. Along the left edge, a pedestrian walks away from the camera within the roadway but keeps to the side. A large work truck is parked on the right with orange cones, narrowing the usable lane and leaving wet patches.", "hazard_reasoning": "A pedestrian wearing a helmet and standing on the right side of the road, because he is cleaning the street. The pedestrian may step into the travel lane near the parked truck, so the driver should be cautious."}
{"id": "train_03054", "split": "train", "clip_key": "titan_clip_38_000408_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_38_000408_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_38_000408_movie_t-3_augB1.jpg", "titan_clip_38_000408_movie_t-2_augB1.jpg", "titan_clip_38_000408_movie_t-1_augB1.jpg", "titan_clip_38_000408_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist", "environment_perception": "A narrow urban commercial street with a shared single lane and smooth pavement runs under a decorative arch, and traffic flow is light and slow. A cyclist in a black shirt pulling a cart rides in the middle of the road ahead, moving away from the ego car and occupying the lane, which constrains the ego's pace. Pedestrians gather along both sidewalks near the foreground crosswalk and continue walking parallel to the road without stepping into the lane. Farther ahead, a small van proceeds slowly along the same corridor. A roadside sign on the right indicates no parking.", "hazard_reasoning": "There is a cyclist wearing a black shirt, pulling a cart, cycling in the middle of the road, away from the ego car. The cyclist occupies the center of the lane and could hinder safe passage, so the driver should yield to maintain a safe distance."}
{"id": "train_03055", "split": "train", "clip_key": "titan_clip_1002_000396_movie", "source": {"subset": "titan", "scenario": "clip_1002", "frame": "000396"}, "frames": ["titan_clip_1002_000396_movie_t-3.jpg", "titan_clip_1002_000396_movie_t-2.jpg", "titan_clip_1002_000396_movie_t-1.jpg", "titan_clip_1002_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian movements", "environment_perception": "A narrow urban street with one lane and no median runs between tall buildings; the pavement is smooth and traffic is light, though curbside loading narrows the way. A large Sagawa truck is stopped along the left edge, its body intruding slightly into the ego lane and reducing clearance. Farther ahead in the lane, a delivery worker pushes a hand cart away from the camera at walking pace, occupying the path and constraining speed. On the right sidewalk, a pedestrian in a blue shirt stands near the curb by a parking entrance, waiting and facing the roadway, so they could step out. A blue P parking sign is visible, and parked scooters, bollards, and cones line the right, forming a tight corridor.", "hazard_reasoning": "There is a pedestrian wearing a green shirt and standing on the left side of the road, because it is getting into a truck. The pedestrian may step unexpectedly into the lane as they enter the vehicle, so the driver should be cautious and anticipate potential movement."}
{"id": "train_03056", "split": "train", "clip_key": "titan_clip_108_000192_movie", "source": {"subset": "titan", "scenario": "clip_108", "frame": "000192"}, "frames": ["titan_clip_108_000192_movie_t-3.jpg", "titan_clip_108_000192_movie_t-2.jpg", "titan_clip_108_000192_movie_t-1.jpg", "titan_clip_108_000192_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around parked truck", "environment_perception": "An urban downtown street with a single narrow lane in the ego direction has smooth pavement and light traffic. The left side is partially blocked by traffic cones because a large flatbed truck is parked along the curb, so the usable lane shifts slightly right. Farther ahead, several pedestrians cross the roadway at the marked crosswalk in front of the intersection, briefly occupying the path. On the right sidewalk, another pedestrian stands near the curb and walks along the storefronts close to the roadway. A red triangular stop sign is posted at the intersection ahead.", "hazard_reasoning": "There are traffic cones in the left lane because of a parked vehicle. These cones mark a partial lane obstruction by the parked truck, so the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_03057", "split": "train", "clip_key": "titan_clip_119_000318_movie", "source": {"subset": "titan", "scenario": "clip_119", "frame": "000318"}, "frames": ["titan_clip_119_000318_movie_t-3.jpg", "titan_clip_119_000318_movie_t-2.jpg", "titan_clip_119_000318_movie_t-1.jpg", "titan_clip_119_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way carriageway, no median, smooth pavement, and light traffic; the ego vehicle proceeds on the left with parked cars and bicycles along both curbs. Ahead in the same direction, a white van sits near the center-left and creeps forward, limiting the ego car's speed on the narrow lane. Farther ahead in the middle of the road, two pedestrians in white shirts and black pants walk away from the ego car, occupying the travel lane because parked vehicles crowd the edges and there is little sidewalk, so they remain relevant to the ego path. A person stands by shopfronts on the right but stays off the roadway. No signals or unusual signs are apparent.", "hazard_reasoning": "There are two pedestrians, wearing a white shirt and black pants, walking away from the ego car in the middle of the road, because of the parked vehicles and no sidewalk. The driver should slow down to avoid a potential collision with pedestrians walking on the roadway, ensuring safety in this constrained space."}
{"id": "train_03058", "split": "train", "clip_key": "2020-0131-103016_005114_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "005114"}, "frames": ["2020-0131-103016_005114_movie_t-3.jpg", "2020-0131-103016_005114_movie_t-2.jpg", "2020-0131-103016_005114_movie_t-1.jpg", "2020-0131-103016_005114_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under and alongside an elevated expressway with two same-direction lanes separated by dashed white lines; the pavement is dry and smooth and traffic is light with steady flow. A white car ahead in the left lane proceeds at a constant speed, setting the ego vehicle's pace. Slightly farther ahead, a second car continues in the right lane at similar speed, remaining in its lane and posing no immediate conflict. A more distant vehicle travels away near the middle of the roadway with a large gap. A circular 40 speed-limit sign is visible and the number 40 is also marked on the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03059", "split": "train", "clip_key": "titan_clip_1192_000366_movie", "source": {"subset": "titan", "scenario": "clip_1192", "frame": "000366"}, "frames": ["titan_clip_1192_000366_movie_t-3.jpg", "titan_clip_1192_000366_movie_t-2.jpg", "titan_clip_1192_000366_movie_t-1.jpg", "titan_clip_1192_000366_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "A narrow urban backstreet with a single shared lane and block-paved surface runs between buildings, with no divider and very light vehicle traffic; several cars are parked along the left. Ahead on the left side of the road, a pedestrian wearing a white shirt and carrying a binder walks toward the ego-vehicle along the lane and may step into its path. Along the right edge, another white-shirted pedestrian walks toward the ego close to the curb and near the travel lane. Farther ahead, a few pedestrians continue along the street. A No Parking sign is visible on a right-side building entrance, and shop steps and signs protrude near the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a binder, and walking on the left side of the road towards the ego-car. The pedestrian may step into the lane unexpectedly, so the driver should slow down to maintain a safe distance."}
{"id": "train_03060", "split": "train", "clip_key": "2020-0218-151547_028691_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "028691"}, "frames": ["2020-0218-151547_028691_movie_t-3.jpg", "2020-0218-151547_028691_movie_t-2.jpg", "2020-0218-151547_028691_movie_t-1.jpg", "2020-0218-151547_028691_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped vehicle", "environment_perception": "An urban multi-lane road runs beneath an elevated expressway, with a barrier on the right and a curbside rail on the left; the dry pavement appears smooth and traffic is light to moderate. A white hatchback is stopped ahead in the ego lane, directly blocking the path and constraining the ego car. Farther ahead, a small white van proceeds in the adjacent right lane at a steady pace, continuing straight without affecting the ego lane. A bright car on the far right travels ahead in the outer lane and pulls away.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car. The driver should carefully manoeuvre to avoid collision with the stationary vehicle ahead."}
{"id": "train_03061", "split": "train", "clip_key": "2020-0203-114632_075606_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "075606"}, "frames": ["2020-0203-114632_075606_movie_t-3.jpg", "2020-0203-114632_075606_movie_t-2.jpg", "2020-0203-114632_075606_movie_t-1.jpg", "2020-0203-114632_075606_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection with clear lane markings and smooth pavement, and traffic is moderate and slows near the junction. Ahead in the ego lane, a white minivan turns left through the intersection, shaping the ego vehicle's pace and path. To the right, a white van in the adjacent lane continues straight, traveling parallel without encroaching on the turn. Farther ahead in the through lanes, a construction truck moves slowly, contributing to the overall cautious flow. Traffic lights are present but their aspect is not clearly visible.", "hazard_reasoning": "There is a white minivan turning left in the ego lane. You should follow the vehicle ahead to maintain safe distance and avoid being cut off as it completes the turn."}
{"id": "train_03062", "split": "train", "clip_key": "2020-0226-101332_044463_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "044463"}, "frames": ["2020-0226-101332_044463_movie_t-3.jpg", "2020-0226-101332_044463_movie_t-2.jpg", "2020-0226-101332_044463_movie_t-1.jpg", "2020-0226-101332_044463_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial passes under an overpass and approaches a wide signalized intersection; pavement looks dry and traffic is moderate but flowing smoothly. A small white van ahead in the ego lane continues straight at a steady pace under a green light, setting the ego-vehicle's speed. In the adjacent right lane, a large yellow dump truck moves ahead through the junction slightly faster while holding its lane, not encroaching on the ego path. Farther left, several cars in parallel lanes also proceed straight with stable gaps, remaining parallel to the ego vehicle. The traffic signal ahead is green, allowing the platoon to clear the intersection.", "hazard_reasoning": "There is a white van driving in the ego lane, in front of the ego lane, because of a green traffic light. The driver should follow the vehicle ahead to maintain safe movement through the intersection and avoid abrupt stops or hesitation."}
{"id": "train_03063", "split": "train", "clip_key": "titan_clip_683_000540_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_683_000540_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_683_000540_movie_t-3_augB1.jpg", "titan_clip_683_000540_movie_t-2_augB1.jpg", "titan_clip_683_000540_movie_t-1_augB1.jpg", "titan_clip_683_000540_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow urban shopping street without a median shows good pavement and very light vehicle traffic. A pedestrian in a blue T-shirt and blue pants carrying a backpack walks in front of the ego vehicle near the left half of the lane, moving toward the left side to get around a parked van and briefly constraining the path. Farther ahead, another pedestrian walks away along the middle of the roadway in the ego lane. On the right edge, a person stands beside a storefront under an awning close to the curb. A white van is parked on the left protruding into the lane, and shop displays crowd the sidewalk.", "hazard_reasoning": "There's a pedestrian carrying a backpack, wearing a blue t-shirt and blue pants, and walking in front of the ego car to the left side because of the parked vehicle. The driver should yield to the pedestrian because they are stepping into the roadway to bypass the obstruction and may enter the lane unexpectedly."}
{"id": "train_03064", "split": "train", "clip_key": "titan_clip_1006_000180_movie", "source": {"subset": "titan", "scenario": "clip_1006", "frame": "000180"}, "frames": ["titan_clip_1006_000180_movie_t-3.jpg", "titan_clip_1006_000180_movie_t-2.jpg", "titan_clip_1006_000180_movie_t-1.jpg", "titan_clip_1006_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban, brick-paved single-lane street with no median runs between tall buildings; traffic is light and the ego vehicle proceeds slowly toward a cross street. A pedestrian carrying a handbag walks in the middle of the lane ahead, moving away from the ego car and occupying the ego path because a white van is stopped along the left curb. The white van ahead stays parked at the curb, narrowing the lane and slowing the ego vehicle's approach. On the right, several pedestrians stand by a storefront and near the far crosswalk, staying on the sidewalk and not entering the lane. Orange cones and a temporary barrier line the left side.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking in the middle of the road, away from the ego car, because of the parked vehicle. The driver should slow down to avoid collision with the pedestrian forced onto the roadway by the parked van."}
{"id": "train_03065", "split": "train", "clip_key": "2020-0228-150133_078900_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "078900"}, "frames": ["2020-0228-150133_078900_movie_t-3.jpg", "2020-0228-150133_078900_movie_t-2.jpg", "2020-0228-150133_078900_movie_t-1.jpg", "2020-0228-150133_078900_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs beside an elevated expressway, with red-tinted, dry pavement and a barrier separating a right-side slip road; traffic is moderate and currently halted at a signal. A silver hatchback directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. To the left, a dark minivan in the adjacent same-direction lane is also stopped in the queue. Farther ahead to the right, another small car waits near the junction as the lanes approach the intersection.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, because of red traffic lights. The driver should stop to avoid colliding with the halted vehicle under red traffic signals."}
{"id": "train_03066", "split": "train", "clip_key": "2020-0213-143552_045594_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "045594"}, "frames": ["2020-0213-143552_045594_movie_t-3.jpg", "2020-0213-143552_045594_movie_t-2.jpg", "2020-0213-143552_045594_movie_t-1.jpg", "2020-0213-143552_045594_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban divided road with two same-direction lanes runs between mid-rise apartments, the pavement smooth and traffic halted at an intersection. Ahead in the ego lane, a white semi-truck is stopped at the red signal, blocking the ego-vehicle's path. In the adjacent left lane, a green taxi waits slightly behind the truck, also stationary for the light. A pedestrian on the right crosses leftward in the marked crosswalk in front of the stopped vehicles. On the far left side of the intersection, a person with a bicycle moves across, remaining outside the ego lane. Overhead traffic lights show solid red for through traffic, and a planted median to the right separates opposing directions.", "hazard_reasoning": "There is a white semi-truck stopped in the ego lane because of a red traffic light. The stopped truck ahead signals that you must halt to avoid a rear-end collision and obey the traffic control device."}
{"id": "train_03067", "split": "train", "clip_key": "2020-0213-143552_091154_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "091154"}, "frames": ["2020-0213-143552_091154_movie_t-3.jpg", "2020-0213-143552_091154_movie_t-2.jpg", "2020-0213-143552_091154_movie_t-1.jpg", "2020-0213-143552_091154_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway runs inside a covered tunnel on a two-lane one-way carriageway curving left, bordered by concrete walls and a right-side guardrail; the pavement is dry and traffic is light and flowing. Ahead in the ego lane, a white truck steadily pulls away as traffic remains smooth, so it does not constrain the ego car. Farther ahead in the right lane, a white passenger car continues straight at a similar speed and stays in its lane, posing no immediate interaction. A few more vehicles are visible farther through the left bend, all moving steadily and collectively setting the cruising pace while the tunnel walls and curve limit long-range visibility.", "hazard_reasoning": "There is a white truck driving away from the ego car, in front of the ego car in the ego lane, because traffic is smooth. However, the red traffic lights ahead indicate the traffic will stop, so the driver should be aware of the upcoming stop to avoid a collision."}
{"id": "train_03068", "split": "train", "clip_key": "titan_clip_990_000570_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_990_000570_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_990_000570_movie_t-3_augB1.jpg", "titan_clip_990_000570_movie_t-2_augB1.jpg", "titan_clip_990_000570_movie_t-1_augB1.jpg", "titan_clip_990_000570_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian", "environment_perception": "A narrow urban two-way street with no median runs between mid-rise buildings, the asphalt looks smooth and traffic is light. A pedestrian with a backpack in a black T-shirt is ahead to the left, walking away from the camera while crossing toward the right and moving through the ego vehicle's path, likely to constrain its pace. Another person stands on the left sidewalk farther ahead, lingering near the curb but staying off the roadway. Planter islands and greenery jut from the right curb, slightly narrowing the carriageway in the mid-distance.", "hazard_reasoning": "There is a pedestrian carrying a backpack and wearing a black t-shirt, walking on the left side of the road, away from the ego car. The driver should be cautious because the pedestrian may change direction or step into the lane unexpectedly."}
{"id": "train_03069", "split": "train", "clip_key": "2020-0203-114632_005514_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005514"}, "frames": ["2020-0203-114632_005514_movie_t-3.jpg", "2020-0203-114632_005514_movie_t-2.jpg", "2020-0203-114632_005514_movie_t-1.jpg", "2020-0203-114632_005514_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "An urban two-way street with one lane per direction curves gently right, divided by a solid double yellow centerline on sound asphalt, and traffic is light to moderate near the bend. Ahead in the ego lane, a motorcyclist rides away at low speed, slightly constraining our pace. Farther ahead in the same lane, a small white van proceeds steadily through the curve. On the right in the oncoming lane, a bus stands at a stop by the curb and remains stationary. Along the left edge of our lane, orange traffic cones and rope cordon off space for parked construction vehicles, and the cones indicate a parked construction vehicle that narrows the usable lane.", "hazard_reasoning": "There is an orange traffic cone, on the left side of the road, indicating a parked construction vehicle. The cones and truck partially block the lane, requiring the driver to carefully manoeuvre to avoid collision."}
{"id": "train_03070", "split": "train", "clip_key": "titan_clip_366_000210_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_366_000210_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_366_000210_movie_t-3_augB1.jpg", "titan_clip_366_000210_movie_t-2_augB1.jpg", "titan_clip_366_000210_movie_t-1_augB1.jpg", "titan_clip_366_000210_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "be aware of the stopped cyclist ahead", "environment_perception": "A narrow urban back street with a single unmarked lane runs between buildings; the asphalt is smooth and traffic is light. The ego-vehicle proceeds straight with railings and parked bicycles along the left and a storefront curb on the right. A cyclist on the left ahead rides toward the ego, wearing a black T-shirt, shorts, and a backpack, and may pass close in the center of the lane. On the right edge just ahead, a person stands beside a handcart stacked with boxes while looking at a phone, narrowing the usable lane. Farther ahead, a pedestrian walks along the right sidewalk without entering the roadway.", "hazard_reasoning": "There is a cyclist stopped on the left side of the road, wearing a black T-shirt, a pair of shorts, with a back-pack. The cyclist's presence in the lane poses a potential obstacle, so the driver should be aware to anticipate any movement or lane adjustments."}
{"id": "train_03071", "split": "train", "clip_key": "2020-0131-135401_009072_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "009072"}, "frames": ["2020-0131-135401_009072_movie_t-3.jpg", "2020-0131-135401_009072_movie_t-2.jpg", "2020-0131-135401_009072_movie_t-1.jpg", "2020-0131-135401_009072_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid centerline passes through dense buildings; the pavement is smooth and traffic appears light. A white box truck is stopped directly ahead in the ego lane, blocking the path and constraining the ego vehicle's movement. Far ahead at the intersection, two pedestrians cross from right to left, occupying the area beyond the truck. A car is parked at the right curb near the camera and a bicycle is parked farther right, both stationary and outside the ego lane. A traffic signal hangs over the upcoming intersection.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The stopped truck blocks the path ahead, requiring the driver to stop to avoid a collision."}
{"id": "train_03072", "split": "train", "clip_key": "titan_clip_489_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_489_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_489_000204_movie_t-3_augB1.jpg", "titan_clip_489_000204_movie_t-2_augB1.jpg", "titan_clip_489_000204_movie_t-1_augB1.jpg", "titan_clip_489_000204_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the construction worker", "environment_perception": "An urban two-way street with one narrow lane per direction and no median runs between buildings; the pavement is smooth and traffic is light as the vehicle continues in the left lane. On the right ahead, a small work truck is stopped along the curb and slightly encroaches into the lane, narrowing the passage. Beside it on the right, a person wearing a green reflector jacket and a helmet stands due to construction work there, remaining near the truck and facing the roadway. On the left sidewalk, a pedestrian moves away behind a green railing and stays clear of the lane. Bicycles line the left railing and no other moving vehicles are close.", "hazard_reasoning": "The person wearing a green reflector jacket and a helmet is standing on the right side of the road because of construction work on the right. The driver should carefully manoeuvre around the construction worker to maintain safe distance and avoid collision."}
{"id": "train_03073", "split": "train", "clip_key": "titan_clip_1378_000276_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1378_000276_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1378_000276_movie_t-3_augB1.jpg", "titan_clip_1378_000276_movie_t-2_augB1.jpg", "titan_clip_1378_000276_movie_t-1_augB1.jpg", "titan_clip_1378_000276_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction runs between low-rise buildings and trees; the asphalt is mostly smooth with some patched sections, and traffic is light. Ahead in the right half of the roadway, a pedestrian in a black T-shirt and brown pants carrying a handbag walks in the middle of the road away from the ego car, edging toward the right side and potentially entering the ego path. Far ahead in the oncoming lane, a car approaches steadily while keeping to its side. Several other pedestrians proceed along the sidewalks on both sides without stepping into the road.", "hazard_reasoning": "The pedestrian in a black t-shirt and brown pants, with a handbag, is walking in the middle of the road to the right side away from the ego car. The driver should slow down because a pedestrian walking on the roadway poses a collision risk and requires speed reduction for safety."}
{"id": "train_03074", "split": "train", "clip_key": "titan_clip_628_000090_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_628_000090_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_628_000090_movie_t-3_augB1.jpg", "titan_clip_628_000090_movie_t-2_augB1.jpg", "titan_clip_628_000090_movie_t-1_augB1.jpg", "titan_clip_628_000090_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with smooth asphalt and no center divider appears lightly trafficked by vehicles, with pedestrians dominating the scene. Two pedestrians carrying handbags walk ahead in the middle of the roadway away from the ego-vehicle, occupying the travel path and setting the pace. On the right edge near the camera, a man walks toward the ego along the curb with part of his stride in the lane, close to the vehicle's path. Farther ahead near the shops, several pedestrians on both sides move along the shoulders and a few begin to cross the street, reducing available space in the lane. No other moving vehicles are visible.", "hazard_reasoning": "There are two pedestrians carrying handbags, walking in the middle of the road away from the ego car. They pose a collision risk as they occupy the driving lane unpredictably, so the driver should slow down to maintain safety."}
{"id": "train_03075", "split": "train", "clip_key": "2020-0228-102841_101709_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "101709"}, "frames": ["2020-0228-102841_101709_movie_t-3.jpg", "2020-0228-102841_101709_movie_t-2.jpg", "2020-0228-102841_101709_movie_t-1.jpg", "2020-0228-102841_101709_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection beneath an elevated railway, with three same-direction lanes and a planted median on the right; the pavement is dry and smooth, and traffic flows at a moderate, steady pace. A white van ahead in the ego lane moves forward through the junction under the green light, leading the ego vehicle and setting its pace. In the adjacent right lane, several cars and vans continue straight under the overpass without merging toward the ego path. On the left corner, pedestrians wait at the crosswalk, paused while vehicles have the green. The signal ahead shows green for through movement.", "hazard_reasoning": "There is a white van moving forward in front of the ego car, in the ego lane, because of a green traffic light. The van ahead may brake suddenly at the intersection, so follow it to anticipate its movements."}
{"id": "train_03076", "split": "train", "clip_key": "2020-0226-140503_088834_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "088834"}, "frames": ["2020-0226-140503_088834_movie_t-3.jpg", "2020-0226-140503_088834_movie_t-2.jpg", "2020-0226-140503_088834_movie_t-1.jpg", "2020-0226-140503_088834_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street has one narrow lane per direction divided by a solid yellow line; the pavement looks dry and traffic is light to moderate. Ahead in the ego lane, a white hatchback slows because a vehicle farther ahead is turning at an intersection, briefly setting our pace. Several oncoming cars advance in the opposite lane at a steady speed without affecting our path. Pedestrians gather at the right-side zebra crossing and others walk along the left sidewalk near the curb, remaining outside the roadway. A small truck is stopped at the curb on the right beyond the crosswalk. A blue pedestrian crossing sign and a no-parking sign are visible near the crosswalk.", "hazard_reasoning": "There is a white hatchback that is slowing down in the ego lane because a vehicle ahead of it is turning. Slow down to maintain safe distance as the vehicle ahead is turning and decelerating."}
{"id": "train_03077", "split": "train", "clip_key": "2020-0213-143552_028840_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "028840"}, "frames": ["2020-0213-143552_028840_movie_t-3.jpg", "2020-0213-143552_028840_movie_t-2.jpg", "2020-0213-143552_028840_movie_t-1.jpg", "2020-0213-143552_028840_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van ahead", "environment_perception": "An urban two-way street with one narrow lane per direction has smooth pavement and light traffic. The gray van parked in front of the ego car sits ahead at the left curb in the ego lane near a crosswalk, occupying part of the lane. On the opposite side, an oncoming cyclist rides along the right edge toward the camera, keeping to the curb and approaching opposite the parked van, which reduces the gap for passing. Farther ahead on the right, a black van is parked at the curb in the oncoming lane. Bollards and red-painted edge lanes line the sidewalks.", "hazard_reasoning": "There is a gray van parked in front of the ego car. The stationary van may obstruct your lane ahead and could require you to slow down or merge, so be aware of its presence."}
{"id": "train_03078", "split": "train", "clip_key": "2020-0131-135401_052402_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "052402"}, "frames": ["2020-0131-135401_052402_movie_t-3.jpg", "2020-0131-135401_052402_movie_t-2.jpg", "2020-0131-135401_052402_movie_t-1.jpg", "2020-0131-135401_052402_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-ending the stopped sedan.", "environment_perception": "An urban multi-lane boulevard with three same-direction lanes and smooth pavement carries light to moderate, steadily moving traffic, with oncoming lanes to the right beyond a painted median. A low flatbed truck runs just ahead in the left adjacent lane alongside the ego vehicle, constraining space for a left lane change. Several cars and vans travel ahead in the ego and center lanes at similar speed, forming a loose queue that sets the pace. Opposing vehicles in the right-side lanes pass steadily but remain separated from the ego path. Overhead gantry signs show a posted speed of 50.", "hazard_reasoning": "There is a silver sedan stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to prevent rear-ending the halted vehicle at the red light."}
{"id": "train_03079", "split": "train", "clip_key": "titan_clip_1330_000204_movie", "source": {"subset": "titan", "scenario": "clip_1330", "frame": "000204"}, "frames": ["titan_clip_1330_000204_movie_t-3.jpg", "titan_clip_1330_000204_movie_t-2.jpg", "titan_clip_1330_000204_movie_t-1.jpg", "titan_clip_1330_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban commercial side street under an elevated structure has a single shared lane with block paving and no median; motor traffic is light while pedestrians are present, and a small delivery truck is stopped ahead, partly occupying the lane. Shopfront signs and displays crowd the left shoulder. On the left edge near the ego-vehicle's path, a pedestrian in a black dress carrying a backpack walks toward the ego-vehicle because other pedestrians and obstacles on the shoulder push her into the lane. Beside her, a man in a white shirt walks toward the ego-vehicle in the travel lane and constrains the pace. Farther ahead near the truck, another pedestrian on the right walks away along the curb. Boxes and carts around the truck further reduce clearance.", "hazard_reasoning": "There is a pedestrian wearing a black dress, carrying a backpack, and walking on the left side of the road towards the ego-car because of another pedestrian and obstacles on the left shoulder. The pedestrian may step into the vehicle path unexpectedly due to limited space, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_03080", "split": "train", "clip_key": "2020-0220-151845_028625_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "028625"}, "frames": ["2020-0220-151845_028625_movie_t-3.jpg", "2020-0220-151845_028625_movie_t-2.jpg", "2020-0220-151845_028625_movie_t-1.jpg", "2020-0220-151845_028625_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs under an elevated expressway with three lanes carrying traffic in the same direction; the pavement is dry and smooth, and flow is heavy with slow stop-and-go movement. A white hatchback directly ahead in the ego lane slows to a crawl because congestion builds in front, dictating the ego vehicle's pace. A silver minivan slightly ahead to the right brakes in the adjacent lane and edges along the queue, potentially merging into the ego lane when gaps appear. A white sedan ahead-left proceeds in the left lane before easing off near the same backup, influencing speeds in that lane.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. This slowdown indicates congestion ahead that may require you to reduce speed to maintain a safe following distance."}
{"id": "train_03081", "split": "train", "clip_key": "2020-0207-101955_007845_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "007845"}, "frames": ["2020-0207-101955_007845_movie_t-3.jpg", "2020-0207-101955_007845_movie_t-2.jpg", "2020-0207-101955_007845_movie_t-1.jpg", "2020-0207-101955_007845_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid hitting stopped vehicles.", "environment_perception": "An urban multi-lane arterial with a raised planted median on the right and a curbside service bay on the left shows worn but intact pavement and heavy stop-and-go flow. A black van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle in place. Farther ahead a white box truck queues in the same direction, continuing the slowdown. On the left, a silver delivery truck stands in the curb bay, waiting and not entering the lane. Several pedestrians walk along the left sidewalk near a shelter, remaining off the road. Overhead blue direction signs mark Route 305 toward Kitashinjuku left and Route 302 toward Iidabashi right.", "hazard_reasoning": "There is a black van stopped in the ego lane because of traffic congestion ahead on the road. Stop to avoid hitting stopped vehicles."}
{"id": "train_03082", "split": "train", "clip_key": "titan_clip_352_000264_movie", "source": {"subset": "titan", "scenario": "clip_352", "frame": "000264"}, "frames": ["titan_clip_352_000264_movie_t-3.jpg", "titan_clip_352_000264_movie_t-2.jpg", "titan_clip_352_000264_movie_t-1.jpg", "titan_clip_352_000264_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of the cyclist crossing", "environment_perception": "A narrow urban two-way street with no centerline runs between apartments and shops, bordered by metal railings; the pavement is smooth and traffic is light. A cyclist wearing a blue shirt crosses ahead from the left curb to the right across the ego vehicle's path, temporarily blocking the way. Another cyclist stands with a bicycle at the right curb just beyond the crossing point, waiting near the edge and possibly entering the lane next. Farther ahead, a white van approaches in the oncoming lane, moving slowly toward the camera without interfering with the crossing. The roadside railings and posts constrain the usable roadway.", "hazard_reasoning": "There is a cyclist wearing a blue shirt, crossing the street, in front of the ego car, from the left side of the road to the right side. Because the cyclist is moving across the vehicle's path directly ahead, the driver should be aware to avoid a potential collision."}
{"id": "train_03083", "split": "train", "clip_key": "2020-0127-132751_097673_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "097673"}, "frames": ["2020-0127-132751_097673_movie_t-3.jpg", "2020-0127-132751_097673_movie_t-2.jpg", "2020-0127-132751_097673_movie_t-1.jpg", "2020-0127-132751_097673_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with the ego car in the left curb lane runs alongside buildings, with a wide painted gore and posts separating it from adjacent right lanes in the same direction; the pavement is smooth and traffic is light and steady. Ahead in the ego lane, a silver van drives away as flow moves, gradually increasing the gap from the ego vehicle. Farther to the right, a few cars continue parallel in their lanes without merging toward the ego path. On the left sidewalk, a pedestrian walks past trees, remaining clear of the roadway. An overhead circular sign posts 40, with additional Japanese direction signs above the lanes.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car, because traffic is moving ahead. This vehicle may brake unexpectedly, so maintain a safe following distance in line with the warning to follow the vehicle ahead."}
{"id": "train_03084", "split": "train", "clip_key": "2020-0129-144857_044388_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "044388"}, "frames": ["2020-0129-144857_044388_movie_t-3.jpg", "2020-0129-144857_044388_movie_t-2.jpg", "2020-0129-144857_044388_movie_t-1.jpg", "2020-0129-144857_044388_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial runs beneath elevated expressway ramps, with three or more same-direction lanes and a raised median on the right; the dry pavement looks worn but serviceable, and traffic is heavy and slowing toward an intersection. A white box truck directly ahead in the ego lane slows for a red signal and sets the pace for the ego vehicle. To the left, a queue of cars and a bus creep forward in the adjacent lane, remaining parallel to the ego lane. A large blue truck at the far left edge rolls slowly near the curb without merging. Overhead blue direction signs and the red traffic light are clearly visible.", "hazard_reasoning": "There is a white truck slowing in the ego lane because of a red traffic light, in front of the ego car. Driver should slow down to maintain a safe distance and avoid a collision with the stopping vehicle."}
{"id": "train_03085", "split": "train", "clip_key": "titan_clip_1033_000198_movie", "source": {"subset": "titan", "scenario": "clip_1033", "frame": "000198"}, "frames": ["titan_clip_1033_000198_movie_t-3.jpg", "titan_clip_1033_000198_movie_t-2.jpg", "titan_clip_1033_000198_movie_t-1.jpg", "titan_clip_1033_000198_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian carefully", "environment_perception": "A narrow urban two-way residential street with a single lane each direction has no median; the pavement is wet and patched, and traffic is light with no moving vehicles or oncoming traffic visible. Ahead in the ego lane, a construction worker wearing a helmet, gray shirt, and gray pants stands spraying water from a hose toward the right because of construction work on the left, occupying part of the lane and constraining the approach. Farther ahead near the centerline, another worker walks along the roadway, further narrowing the path. A small flatbed truck is stopped on the right shoulder with equipment, and hoses, cables, a green bucket, and scattered materials cross or border the lane beside an excavation area and a portable toilet on the left.", "hazard_reasoning": "There is a pedestrian wearing a helmet, a gray shirt, and gray pants, standing sprinkling water from a hose, facing the right side because of construction work on the left. The driver should be cautious and manoeuvre carefully because the pedestrian is on the roadway and may step into the vehicular lane unexpectedly."}
{"id": "train_03086", "split": "train", "clip_key": "titan_clip_1337_000462_movie", "source": {"subset": "titan", "scenario": "clip_1337", "frame": "000462"}, "frames": ["titan_clip_1337_000462_movie_t-3.jpg", "titan_clip_1337_000462_movie_t-2.jpg", "titan_clip_1337_000462_movie_t-1.jpg", "titan_clip_1337_000462_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the bicycle carefully", "environment_perception": "A narrow urban side street with one lane and no median runs between tall buildings; the pavement looks smooth and traffic is light. On the right edge near the camera, three pedestrians walk toward the ego in the roadway, encroaching into the lane and constraining the passing space. Ahead near the intersection, a man steps from the left side and crosses toward the right, potentially entering the ego's path. Along the left side by a convenience store, a black bicycle is parked close to the ego lane, with other bicycles lined up nearby, which narrows the usable width.", "hazard_reasoning": "There is a black bicycle parked on the left side of the road in the ego lane; it obstructs the driving path and may force sudden avoidance. The driver should manoeuvre around the bicycle carefully to maintain safe lane positioning."}
{"id": "train_03087", "split": "train", "clip_key": "titan_clip_236_000168_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_236_000168_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_236_000168_movie_t-3_augB1.jpg", "titan_clip_236_000168_movie_t-2_augB1.jpg", "titan_clip_236_000168_movie_t-1_augB1.jpg", "titan_clip_236_000168_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street runs between tall buildings, forming a single unmarked two-way lane with smooth pavement and light traffic. Parked vehicles, cones, and a bicycle line the curbs, especially on the right, slightly narrowing the passage. Ahead on the right curb, a silver minivan stands partially in the roadway, reducing available space for the ego vehicle. From the right side near this van, a pedestrian wearing blue pants and a cap walks toward the middle of the road and may enter the ego lane. On the left sidewalk slightly ahead, another pedestrian holding an umbrella walks along the curb without stepping into the lane. No signals or speed limit signs are clearly visible, and no oncoming traffic appears.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a cap, walking toward the middle of the road from the right side. The pedestrian is stepping into the roadway unexpectedly, so the driver should slow down to maintain a safe distance and prevent a collision."}
{"id": "train_03088", "split": "train", "clip_key": "2020-0203-114632_055195_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "055195"}, "frames": ["2020-0203-114632_055195_movie_t-3.jpg", "2020-0203-114632_055195_movie_t-2.jpg", "2020-0203-114632_055195_movie_t-1.jpg", "2020-0203-114632_055195_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial curves right with smooth pavement, red painted sections, and embedded rail tracks; traffic is moderate and queued at a signal. A silver hatchback directly ahead in the ego lane is stopped for the red light, holding the ego car. A large white box truck waits slightly ahead to the left in the adjacent same-direction lane, pacing the queue and partly blocking sight to the junction. Across a guardrailed median to the far right, oncoming cars and a truck travel along their approach. Overhead traffic lights facing the ego approach show red.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to maintain safe distance and avoid a rear-end collision."}
{"id": "train_03089", "split": "train", "clip_key": "2020-0203-114632_046872_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "046872"}, "frames": ["2020-0203-114632_046872_movie_t-3.jpg", "2020-0203-114632_046872_movie_t-2.jpg", "2020-0203-114632_046872_movie_t-1.jpg", "2020-0203-114632_046872_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road approaches a signalized intersection with clear markings, a chevron buffer, and smooth pavement; traffic is moderate and bunches up as the light remains red. A silver van ahead in the ego lane drives away from the ego car and then slows toward the stop line, setting the ego vehicle's pace. To its right, a white box truck in the adjacent lane decelerates in parallel and stays in lane. Pedestrians wait on the left sidewalk near the corner without stepping into the road. Overhead signals facing the ego direction display red.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car. Following the vehicle ahead helps maintain a safe distance and anticipate sudden stops or changes in traffic flow."}
{"id": "train_03090", "split": "train", "clip_key": "2020-0226-101332_018130_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "018130"}, "frames": ["2020-0226-101332_018130_movie_t-3.jpg", "2020-0226-101332_018130_movie_t-2.jpg", "2020-0226-101332_018130_movie_t-1.jpg", "2020-0226-101332_018130_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes and no median runs between mid-rise buildings; the damp pavement under overcast skies carries moderate, steady traffic. Ahead in the ego lane, a black SUV slows in front of the ego car and constrains its pace. On the right, a white coupe alongside accelerates slightly and continues ahead, likely overtaking. Farther ahead in the right lane, a white utility truck cruises with the flow and could affect any lane change.", "hazard_reasoning": "There is a black SUV slowing in the ego lane, in front of the ego car. The black SUV's deceleration could require the driver to adjust speed promptly to maintain a safe following distance, so the driver should slow down."}
{"id": "train_03091", "split": "train", "clip_key": "2020-0205-103411_076565_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "076565"}, "frames": ["2020-0205-103411_076565_movie_t-3.jpg", "2020-0205-103411_076565_movie_t-2.jpg", "2020-0205-103411_076565_movie_t-1.jpg", "2020-0205-103411_076565_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban arterial with three same-direction lanes, clear arrows, and smooth pavement stretches toward a signalized intersection; traffic is moderate and bunches near the crosswalk. A gray truck ahead in the ego lane slows toward the crosswalk, constraining the ego car's pace. A white van slightly ahead in the left lane continues straight through the junction at steady speed, remaining in its lane. A dark SUV in the right lane travels parallel just ahead without changing lanes. The overhead signal shows green, and sun glare from the upper left reduces contrast.", "hazard_reasoning": "There is a gray truck slowing in the ego lane, in front of the ego car. The slowing truck may require the driver to reduce speed to maintain a safe following distance."}
{"id": "train_03092", "split": "train", "clip_key": "2020-0205-103411_105949_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "105949"}, "frames": ["2020-0205-103411_105949_movie_t-3.jpg", "2020-0205-103411_105949_movie_t-2.jpg", "2020-0205-103411_105949_movie_t-1.jpg", "2020-0205-103411_105949_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of white van merging ahead", "environment_perception": "An urban multi-lane arterial with smooth asphalt shows a right-side taper marked by chevrons and guardrails, and traffic is light to moderate with steady flow. Ahead slightly to the right, a white van changes left into the ego lane in front of the ego car as the adjacent lane ends, becoming the vehicle that governs the ego car's pace. Farther ahead, a few cars in the same direction proceed steadily with clear gaps. Overhead gantry signs span the roadway, and the chevron zone with posts highlights the active merge area.", "hazard_reasoning": "There is a white van lane changing in front of the ego car, from the right lane to the ego lane. The white van's lane change could bring it unexpectedly into the path of the ego vehicle, requiring increased attention to avoid a potential collision."}
{"id": "train_03093", "split": "train", "clip_key": "2020-0131-135401_005704_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "005704"}, "frames": ["2020-0131-135401_005704_movie_t-3.jpg", "2020-0131-135401_005704_movie_t-2.jpg", "2020-0131-135401_005704_movie_t-1.jpg", "2020-0131-135401_005704_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision", "environment_perception": "An urban two-way street with one narrow lane in each direction, no median, and smooth dry asphalt; traffic is light, and the oncoming lane to the right is empty. A white box truck is directly ahead in the ego lane and remains stopped, blocking the path and constraining progress. A pedestrian on the left sidewalk walks away along the building frontage and stays off the roadway. An overhead circular sign shows 40. Strong sunlight from the upper right causes noticeable glare and reduced contrast.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The driver should stop to avoid a collision with the stationary truck blocking the lane."}
{"id": "train_03094", "split": "train", "clip_key": "titan_clip_1092_000066_movie", "source": {"subset": "titan", "scenario": "clip_1092", "frame": "000066"}, "frames": ["titan_clip_1092_000066_movie_t-3.jpg", "titan_clip_1092_000066_movie_t-2.jpg", "titan_clip_1092_000066_movie_t-1.jpg", "titan_clip_1092_000066_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single lane each way and no median approaches a zebra crossing and a small roadworks area; the pavement looks clean and traffic is light but slows near the work zone. A pedestrian traffic controller holding orange flags walks in from the right across the crosswalk while directing vehicles, briefly occupying the ego lane. A black van ahead in the ego lane slows and waits before the crossing due to the controller and narrowing caused by the works. Another worker stands farther ahead at the right shoulder by cones, guiding vehicles through. A temporary orange STOP position sign stands on the left, with cones and barricades marking the closure.", "hazard_reasoning": "There is a pedestrian holding flags and walking on the right side of the road, because he is directing traffic. The driver should slow down to safely obey the pedestrian's signals and avoid endangering him."}
{"id": "train_03095", "split": "train", "clip_key": "2020-0210-101957_059205_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "059205"}, "frames": ["2020-0210-101957_059205_movie_t-3.jpg", "2020-0210-101957_059205_movie_t-2.jpg", "2020-0210-101957_059205_movie_t-1.jpg", "2020-0210-101957_059205_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision", "environment_perception": "An urban two-lane one-way road runs between apartment buildings on the left and a right-side sound wall, with smooth pavement, no median, and light traffic. A green truck directly ahead in the ego lane slows, constraining the ego car's pace. Slightly farther ahead in the adjacent left lane, a white car proceeds straight at a steadier speed and gradually pulls away without affecting the ego vehicle. The number 50 painted on the roadway is visible as a speed indication. No oncoming traffic or unusual obstacles appear.", "hazard_reasoning": "There is a green truck slowing in the ego lane, in front of the ego car. The truck's deceleration could lead to a sudden speed reduction for the ego-vehicle, so the driver should reduce speed to maintain safety."}
{"id": "train_03096", "split": "train", "clip_key": "2020-0220-151845_059999_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "059999"}, "frames": ["2020-0220-151845_059999_movie_t-3.jpg", "2020-0220-151845_059999_movie_t-2.jpg", "2020-0220-151845_059999_movie_t-1.jpg", "2020-0220-151845_059999_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "A covered urban expressway with dry pavement carries same-direction traffic in multiple lanes, enclosed by barriers, and flow is moderate with periodic slowdowns. In the left lane ahead, a yellow truck with a tarped load slows and sets the ego vehicle's pace. To its right, a silver minivan in the adjacent lane travels alongside at a similar speed, limiting space to merge. Farther ahead in the right lanes, several cars continue in a compact queue that keeps the overall flow slow.", "hazard_reasoning": "There is a yellow truck slowing down in the ego lane. The truck's reduced speed and obstructed sight-line create a risk of sudden deceleration, so the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_03097", "split": "train", "clip_key": "2020-0220-102630_109118_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "109118"}, "frames": ["2020-0220-102630_109118_movie_t-3.jpg", "2020-0220-102630_109118_movie_t-2.jpg", "2020-0220-102630_109118_movie_t-1.jpg", "2020-0220-102630_109118_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban bidirectional road with a painted centerline and no physical median has smooth, dry pavement and light traffic, with the ego vehicle traveling in the left lane. Low-rise buildings, utility poles, and sidewalks line both sides. A silver box truck directly ahead in the ego lane accelerates away, briefly dictating the ego car's pace before opening a larger gap. A pedestrian on the right sidewalk walks forward near a parking entrance but remains off the roadway. No salient signals or speed limit signs are visible.", "hazard_reasoning": "There is a silver truck accelerating in the ego lane in front of the ego car. The truck's rapid acceleration may increase the gap unexpectedly, requiring you to adjust speed and start moving to maintain a safe following distance."}
{"id": "train_03098", "split": "train", "clip_key": "titan_clip_964_000552_movie", "source": {"subset": "titan", "scenario": "clip_964", "frame": "000552"}, "frames": ["titan_clip_964_000552_movie_t-3.jpg", "titan_clip_964_000552_movie_t-2.jpg", "titan_clip_964_000552_movie_t-1.jpg", "titan_clip_964_000552_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian movements ahead", "environment_perception": "An urban commercial street with a narrow two-way carriageway has smooth pavement, no median or centerline, and very light vehicle traffic with no oncoming cars nearby. On the left ahead, a pedestrian in a white shirt and black pants walks away along the roadside, remaining clear of the ego lane. In the near left foreground, another pedestrian in a white shirt steps off the sidewalk and crosses rightward in front of the ego vehicle, briefly occupying the lane and constraining its path. On the right corner, a person stands at the curb by a storefront, waiting near the edge of the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt with black pants walking on the left side of the road, away from the ego car. The pedestrian could step off the curb or change direction unexpectedly, so the driver should be aware to avoid potential conflict."}
{"id": "train_03099", "split": "train", "clip_key": "2020-0205-103411_063906_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "063906"}, "frames": ["2020-0205-103411_063906_movie_t-3.jpg", "2020-0205-103411_063906_movie_t-2.jpg", "2020-0205-103411_063906_movie_t-1.jpg", "2020-0205-103411_063906_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with three same-direction lanes and a planted median on the right has smooth pavement and moderate traffic bunching at a signalized intersection. A silver hatchback directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the right lane near the median, a dark box truck is already queued at the intersection and remains stationary, partly obscuring the view of the cross street. In the left lane ahead, a white van is stopped alongside the hatchback, matching its standstill and limiting room to merge. Overhead signals show red, and an overhead sign posts 50.", "hazard_reasoning": "A silver hatchback is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to avoid a collision since the vehicle ahead is halted at a red light."}
{"id": "train_03100", "split": "train", "clip_key": "2020-0214-102601_065338_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "065338"}, "frames": ["2020-0214-102601_065338_movie_t-3.jpg", "2020-0214-102601_065338_movie_t-2.jpg", "2020-0214-102601_065338_movie_t-1.jpg", "2020-0214-102601_065338_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A suburban, tree-lined road with two lanes in the ego direction has smooth pavement and moderate traffic that compresses into a slower queue ahead. A blue car in the ego lane directly ahead decelerates behind the queue and sets the ego vehicle's pace. In the adjacent left lane, a white van slightly ahead moves at a similar speed amid several cars, limiting chances to change lanes. Farther ahead in the left lane, another small car follows the van as the pack closes up, while a curb with bushes lines the right edge.", "hazard_reasoning": "There is a blue SUV slowing in the ego lane, away from the ego car, because of traffic congestion ahead. This slowdown indicates a buildup of traffic ahead, so you should reduce speed to maintain a safe following distance."}
{"id": "train_03101", "split": "train", "clip_key": "2020-0228-150133_010341_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "010341"}, "frames": ["2020-0228-150133_010341_movie_t-3.jpg", "2020-0228-150133_010341_movie_t-2.jpg", "2020-0228-150133_010341_movie_t-1.jpg", "2020-0228-150133_010341_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single lane in each direction is divided by a solid yellow centerline; the asphalt is dry and traffic is queued at an intersection. A white box truck directly ahead in the ego lane is stopped for a red traffic signal, blocking the lane and setting the pace. A dark minivan waits along the left curb beside the ego vehicle, edging forward parallel to the lane without entering the path. Several pedestrians stand on the right sidewalk near the crosswalk, waiting as the light holds red.", "hazard_reasoning": "There is a white truck stopped in the ego lane, because of a red traffic light. You should stop to prevent a collision with the halted truck and maintain a safe following distance."}
{"id": "train_03102", "split": "train", "clip_key": "2020-0129-144857_042597_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "042597"}, "frames": ["2020-0129-144857_042597_movie_t-3.jpg", "2020-0129-144857_042597_movie_t-2.jpg", "2020-0129-144857_042597_movie_t-1.jpg", "2020-0129-144857_042597_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under an elevated structure, with the ego car in the rightmost lane bounded by a guardrail; pavement is dry and traffic is heavy and stop-and-go. A black van is stopped directly ahead in the ego lane because of congestion, keeping the ego vehicle halted. Farther ahead in the same lane, a large box truck is also stopped, extending the queue. In the adjacent lane to the left, a white car creeps forward past the line at low speed without moving toward the ego lane. On the farther left, a scooter advances slowly along the traffic, which could place it ahead when lanes converge. A yellow merge?aution sign on the right warns of an upcoming lane merge.", "hazard_reasoning": "There is a black van stopped in front of the ego car in the ego lane, because of traffic congestion. Stopping promptly prevents a collision with the stationary van ahead."}
{"id": "train_03103", "split": "train", "clip_key": "2020-0213-143552_029713_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "029713"}, "frames": ["2020-0213-143552_029713_movie_t-3.jpg", "2020-0213-143552_029713_movie_t-2.jpg", "2020-0213-143552_029713_movie_t-1.jpg", "2020-0213-143552_029713_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian approaching your vehicle", "environment_perception": "A narrow urban alley with no lane markings comes into view; the asphalt is dry and intact, and there is essentially no other traffic as the ego car moves slowly. A man wearing a black coat, carrying two bags, walks toward the ego vehicle along the left side beneath a building's overhang, coming close to the vehicle's path and constraining its pace. Parked bicycles and a folded gate sit near the curb by the building entrance, slightly narrowing the available space.", "hazard_reasoning": "There is a man wearing a black coat, carrying two bags, and walking towards the ego car, beneath a building's overhang. The pedestrian's movement towards the vehicle under limited sidewalk visibility requires caution to prevent a collision."}
{"id": "train_03104", "split": "train", "clip_key": "titan_clip_197_000318_movie", "source": {"subset": "titan", "scenario": "clip_197", "frame": "000318"}, "frames": ["titan_clip_197_000318_movie_t-3.jpg", "titan_clip_197_000318_movie_t-2.jpg", "titan_clip_197_000318_movie_t-1.jpg", "titan_clip_197_000318_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A dense urban canyon forms a narrow two-way road with one lane each way, no median, and smooth pavement; traffic is light as the vehicle approaches a zebra crossing. A small white car ahead in the left ego lane proceeds slowly, constraining the pace. A pedestrian in a black T-shirt and brown skirt, carrying a handbag, waits at the right curb by the crosswalk to move from right to left. Another person with an umbrella walks along the right sidewalk near the crossing and stays out of the roadway. The zebra crossing is clearly marked, with bollards lining the right edge.", "hazard_reasoning": "The pedestrian in a black t-shirt and brown skirt, with a handbag, is waiting to cross from the right side to the left side of the road at the crosswalk. The driver should stop to allow the pedestrian to cross safely."}
{"id": "train_03105", "split": "train", "clip_key": "titan_clip_1344_000168_movie", "source": {"subset": "titan", "scenario": "clip_1344", "frame": "000168"}, "frames": ["titan_clip_1344_000168_movie_t-3.jpg", "titan_clip_1344_000168_movie_t-2.jpg", "titan_clip_1344_000168_movie_t-1.jpg", "titan_clip_1344_000168_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with one narrow lane each way and no median runs under trees; pavement is smooth and traffic is light but slow-moving. Ahead in the ego lane a pedestrian wearing a white shirt and black pants is in the middle of the road, crossing from left to right directly across the ego path. A white van and a box truck ahead in the same direction slow near the crossing, constraining the ego vehicle's pace. Numerous vans are parked along the right curb, narrowing the usable lane.", "hazard_reasoning": "A pedestrian wearing a white shirt with black pants is in the middle of the road, crossing the street in front of the ego car, to the right side. The driver should slow down to ensure sufficient time to react and avoid collision with the crossing pedestrian."}
{"id": "train_03106", "split": "train", "clip_key": "titan_clip_108_000966_movie", "source": {"subset": "titan", "scenario": "clip_108", "frame": "000966"}, "frames": ["titan_clip_108_000966_movie_t-3.jpg", "titan_clip_108_000966_movie_t-2.jpg", "titan_clip_108_000966_movie_t-1.jpg", "titan_clip_108_000966_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban intersection lined with high-rise buildings is shown, with a single-lane approach, no median, and smooth pavement; traffic flow is light as the ego vehicle slows near a crosswalk. A cyclist wearing a backpack rides ahead of the ego and moves away through the intersection, passing across the vehicle's path and continuing away from view. A pedestrian in a light shirt crosses directly in front from left to right at close range, keeping the ego paused. On the right, several pedestrians wait at the curb by the crosswalk and face the roadway, potentially entering the lane. A motorcycle is parked along the right edge near bollards, slightly narrowing the available space.", "hazard_reasoning": "A cyclist wearing a backpack is cycling in front of and away from the ego car. The driver should slow down to maintain a safe distance and be prepared for any sudden maneuver by the cyclist."}
{"id": "train_03107", "split": "train", "clip_key": "titan_clip_1101_000330_movie", "source": {"subset": "titan", "scenario": "clip_1101", "frame": "000330"}, "frames": ["titan_clip_1101_000330_movie_t-3.jpg", "titan_clip_1101_000330_movie_t-2.jpg", "titan_clip_1101_000330_movie_t-1.jpg", "titan_clip_1101_000330_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow shared lane and tiled pavement runs straight between storefronts; there is no divider and no motor traffic, while pedestrian flow is moderate. On the left side near the ego vehicle, a pedestrian wearing black and carrying a handbag walks away along the edge. Two pedestrians ahead in the center move away in the ego path at a steady pace, occupying the lane and effectively constraining progress. Farther ahead, another person continues ahead toward the right side, opening a small gap in the middle. Numerous shop signboards and a few parked bicycles jut from both sides, narrowing the corridor but leaving a clear passage.", "hazard_reasoning": "There is a pedestrian wearing black clothing and carrying a handbag, walking on the left side of the road, away from the ego car. The pedestrian is close to the driving path and may change direction unexpectedly, so the driver should slow down to maintain a safe distance."}
{"id": "train_03108", "split": "train", "clip_key": "2020-0204-103442_032597_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "032597"}, "frames": ["2020-0204-103442_032597_movie_t-3.jpg", "2020-0204-103442_032597_movie_t-2.jpg", "2020-0204-103442_032597_movie_t-1.jpg", "2020-0204-103442_032597_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs beneath an elevated expressway, with smooth pavement and steady moderate same-direction traffic; a guardrail lines the right edge and there is no visible oncoming stream. Ahead in the ego lane, a white box truck drives away from the ego car and holds a consistent pace. In the rightmost lane just ahead near the curb, a compact silver van moves slowly beside the truck, limiting space on the right. In the left adjacent lane, a silver sedan advances and gradually passes the ego lane. Farther ahead in the right lane, another small white van continues under the structure without changing lanes.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The obstructing vehicle may hide hazards ahead, so you should follow the vehicle ahead to maintain visibility and react safely."}
{"id": "train_03109", "split": "train", "clip_key": "2020-0129-105040_080514_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "080514"}, "frames": ["2020-0129-105040_080514_movie_t-3.jpg", "2020-0129-105040_080514_movie_t-2.jpg", "2020-0129-105040_080514_movie_t-1.jpg", "2020-0129-105040_080514_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential street with a narrow two-way carriageway curves gently right ahead, with no median and smooth pavement; traffic is light with no same-direction or oncoming vehicles visible. A man stands on the left sidewalk at the corner beside the zebra crosswalk in the foreground, waiting near the curb and positioned to step into the ego lane. No other road users appear. A marked crosswalk spans the road, and tall walls and hedges on the right create a partial blind bend beyond the intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03110", "split": "train", "clip_key": "titan_clip_461_000174_movie", "source": {"subset": "titan", "scenario": "clip_461", "frame": "000174"}, "frames": ["titan_clip_461_000174_movie_t-3.jpg", "titan_clip_461_000174_movie_t-2.jpg", "titan_clip_461_000174_movie_t-1.jpg", "titan_clip_461_000174_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the stopped truck.", "environment_perception": "A narrow urban two-way street with mid-rise buildings and smooth pavement stretches ahead, with no median and light traffic; no oncoming vehicles are visible. Ahead on the right, a white truck is stopped at the curb in front of the ego car, stationary and occupying part of the roadway as the ego approaches. No other moving vehicles or pedestrians appear nearby. Orange traffic cones line the right sidewalk along shuttered storefronts.", "hazard_reasoning": "There is a white truck stopped on the right side of the road, in front of the ego car. The stopped truck could obstruct the travel lane and require a controlled maneuver to avoid collision, so the driver should manoeuvre carefully around it."}
{"id": "train_03111", "split": "train", "clip_key": "2020-0204-150838_032545_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "032545"}, "frames": ["2020-0204-150838_032545_movie_t-3.jpg", "2020-0204-150838_032545_movie_t-2.jpg", "2020-0204-150838_032545_movie_t-1.jpg", "2020-0204-150838_032545_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane boulevard with good pavement is heavily congested, with the ego vehicle queued near the centerline that separates oncoming lanes to the right. A white van directly ahead in the ego lane is stopped because of traffic congestion, blocking the path and determining the pace. To the front left, a white MPV in the adjacent same-direction lane inches forward parallel to the queue, staying close to the ego vehicle. Alongside on the far left, a black taxi creeps forward in its lane, level with the ego car and limiting lateral space. On the opposite side of the yellow centerlines, sparse oncoming traffic is visible farther right but does not interact.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. The van's stopped state in congested traffic poses a risk of collision if the driver does not stop in time."}
{"id": "train_03112", "split": "train", "clip_key": "2020-0227-104226_013728_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "013728"}, "frames": ["2020-0227-104226_013728_movie_t-3.jpg", "2020-0227-104226_013728_movie_t-2.jpg", "2020-0227-104226_013728_movie_t-1.jpg", "2020-0227-104226_013728_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban multilane arterial runs under an elevated structure, with clean pavement and heavy, slow-moving traffic. The ego vehicle is in the rightmost lane beside a guardrail and viaduct pillars, which narrow the shoulder. A white box truck is stopped directly ahead in the ego lane, holding the ego vehicle in place. To the left, a white minivan in the adjacent lane edges forward alongside and slightly ahead, limiting any chance to merge around the truck. Farther ahead in that lane, a dark car queues behind other traffic at a crawl.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The stopped truck is obstructing the lane ahead and poses a collision risk, so the driver should stop immediately to avoid a crash."}
{"id": "train_03113", "split": "train", "clip_key": "2020-0131-135401_001165_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "001165"}, "frames": ["2020-0131-135401_001165_movie_t-3.jpg", "2020-0131-135401_001165_movie_t-2.jpg", "2020-0131-135401_001165_movie_t-1.jpg", "2020-0131-135401_001165_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road with one lane each way runs between mid-rise buildings, divided by a solid yellow centerline on smooth pavement, and traffic is effectively stopped. A white box truck directly ahead in the ego lane is stopped because of congestion ahead and blocks the ego vehicle's path. Several pedestrians on the left sidewalk walk forward near the curb without entering the roadway. The oncoming lane beside the centerline is clear near the ego vehicle, and the right edge of the road is lined by a curb with plantings.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary vehicle ahead due to congestion."}
{"id": "train_03114", "split": "train", "clip_key": "2020-0226-140503_100836_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-140503_100836_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-140503_100836_movie_t-3_augB1.jpg", "2020-0226-140503_100836_movie_t-2_augB1.jpg", "2020-0226-140503_100836_movie_t-1_augB1.jpg", "2020-0226-140503_100836_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs straight with two same-direction lanes on the left and oncoming lanes to the right, divided by a painted median; the dry pavement looks smooth and traffic is moderate. Ahead in the ego lane a gray truck slows, briefly constraining the pace. Slightly farther ahead and left of center, a motor scooter travels straight in the same direction at a steady speed, affecting following distance. To the right, a white sedan and several other vehicles approach in the oncoming lanes, remaining separated from the ego lane. Farther ahead, orange cones form a work area near the median that narrows space through the center.", "hazard_reasoning": "There is a gray truck slowing down in the ego lane. The truck's reduced speed ahead could require sudden braking if not anticipated, so you should slow down now to maintain a safe following distance."}
{"id": "train_03115", "split": "train", "clip_key": "2020-0205-103411_056954_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "056954"}, "frames": ["2020-0205-103411_056954_movie_t-3.jpg", "2020-0205-103411_056954_movie_t-2.jpg", "2020-0205-103411_056954_movie_t-1.jpg", "2020-0205-103411_056954_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with three lanes in the ego direction, where the ego travels in the left lane; a planted median separates oncoming traffic to the right, the pavement is smooth, and flow is moderate. A white box truck just ahead to the left moves right and merges into the ego lane in front, using the available gap. Farther ahead in the center lane, a dark hatchback continues straight at similar speed and loosely sets the pace without entering the ego lane. At the left curb near the crosswalk, a black sedan remains stationary and outside the travel path. Overhead traffic signals mark an upcoming signalized intersection.", "hazard_reasoning": "There is a white truck lane changing in front of the ego car, from the left lane to the ego lane, because there is space in the ego lane. The truck's sudden lane change reduces the buffer distance to the ego vehicle, so the driver should slow down to maintain a safe following distance."}
{"id": "train_03116", "split": "train", "clip_key": "titan_clip_761_000486_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_761_000486_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_761_000486_movie_t-3_augB1.jpg", "titan_clip_761_000486_movie_t-2_augB1.jpg", "titan_clip_761_000486_movie_t-1_augB1.jpg", "titan_clip_761_000486_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban commercial street with two-way traffic and smooth pavement has no median, and vehicle flow is slow as the ego car moves through a crowded shopping area. Ahead in the ego lane, a cluster of pedestrians crosses from left to right near an intersection, constraining the ego vehicle's pace. On the right edge near the camera, a pedestrian wearing a white shirt and blue pants walks toward the ego car along the lane line and may step into the path. On the left, a stopped delivery truck with two people standing beside it encroaches on the lane and narrows the passage. A white SUV is parked along the right curb, further squeezing the roadway.", "hazard_reasoning": "A pedestrian wearing a white shirt and blue pants is walking on the right side of the road, toward the ego car. The pedestrian may step into the vehicle's path, so the driver should slow down to maintain a safe distance."}
{"id": "train_03117", "split": "train", "clip_key": "titan_clip_505_000144_movie", "source": {"subset": "titan", "scenario": "clip_505", "frame": "000144"}, "frames": ["titan_clip_505_000144_movie_t-3.jpg", "titan_clip_505_000144_movie_t-2.jpg", "titan_clip_505_000144_movie_t-1.jpg", "titan_clip_505_000144_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for crossing pedestrians", "environment_perception": "An urban commercial street with a two-lane roadway lacks a median, the pavement is slightly worn, and overall traffic is light. Two pedestrians wearing high heels move from the right to the left across the zebra crosswalk ahead, passing directly in front of the ego vehicle. A white flatbed truck stands ahead near the curb by the crosswalk, effectively occupying much of the ego lane and limiting forward space. Another work vehicle is stopped further ahead in the same direction. A blue pedestrian-crossing sign is visible at the corner.", "hazard_reasoning": "There are two pedestrians wearing high heels and crossing from the right side to the left side at the crosswalk. The driver should stop because pedestrians have right of way and their slow pace in heels increases collision risk."}
{"id": "train_03118", "split": "train", "clip_key": "2020-0205-103411_087331_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "087331"}, "frames": ["2020-0205-103411_087331_movie_t-3.jpg", "2020-0205-103411_087331_movie_t-2.jpg", "2020-0205-103411_087331_movie_t-1.jpg", "2020-0205-103411_087331_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A busy urban multilane arterial runs straight on smooth pavement, with oncoming lanes to the right separated by a painted median and island; traffic in the ego direction is heavy and queued. Directly ahead in the ego lane, a white hatchback is stopped for a red light at the intersection, holding the ego car in place. Farther ahead in the same lane, a large truck also waits at the light, constraining progress. To the left, a white sedan and a silver minivan are stopped alongside in the adjacent lane, matching the queue. Oncoming vehicles on the right move steadily past the median without interacting with the ego lane.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car because of a red traffic light. The driver must stop to maintain a safe distance and obey the signal."}
{"id": "train_03119", "split": "train", "clip_key": "titan_clip_967_000510_movie", "source": {"subset": "titan", "scenario": "clip_967", "frame": "000510"}, "frames": ["titan_clip_967_000510_movie_t-3.jpg", "titan_clip_967_000510_movie_t-2.jpg", "titan_clip_967_000510_movie_t-1.jpg", "titan_clip_967_000510_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the oncoming van", "environment_perception": "An urban neighborhood scene unfolds on a very narrow two-way street without a centerline, smooth pavement, and light traffic. The ego vehicle proceeds along the left half. Ahead, a black van approaches oncoming partly in the ego lane because the roadway is tight, easing through the constricted section and briefly limiting the ego vehicle's space. On the near left, a pedestrian walks along the curb in the same direction, staying close to the edge and near the ego path as the vehicles pass. A small van is stopped on the left and several bicycles are parked by the shopfront on the right, further narrowing the usable corridor.", "hazard_reasoning": "There is a black van driving towards the ego car, in the ego lane, because the lane is narrow. This oncoming van is encroaching into your lane on a narrow road, increasing collision risk, so you should carefully manoeuvre around it."}
{"id": "train_03120", "split": "train", "clip_key": "2020-0220-151845_031522_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "031522"}, "frames": ["2020-0220-151845_031522_movie_t-3.jpg", "2020-0220-151845_031522_movie_t-2.jpg", "2020-0220-151845_031522_movie_t-1.jpg", "2020-0220-151845_031522_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes and side guardrails; the pavement is dry and smooth, and traffic flows at a moderate pace. A white van drives directly ahead in the ego lane at a steady speed, effectively setting the ego vehicle's pace. To the right, a green taxi travels alongside slightly ahead in the adjacent lane, continuing straight and limiting immediate lane-change options. Ahead-right, a white car in the next lane proceeds at similar speed a short distance beyond the van, remaining in its lane. Farther ahead in the left lane, several vans queue more tightly and move slowly, contributing to congestion. An overhead gantry displays a 50 speed limit along with directional signs.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane. The leading van may brake suddenly, so maintaining a safe following distance is essential to avoid a collision."}
{"id": "train_03121", "split": "train", "clip_key": "2020-0206-101736_053661_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "053661"}, "frames": ["2020-0206-101736_053661_movie_t-3.jpg", "2020-0206-101736_053661_movie_t-2.jpg", "2020-0206-101736_053661_movie_t-1.jpg", "2020-0206-101736_053661_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes and a right-side guardrail dividing oncoming traffic approaches a signalized intersection; the pavement looks good and traffic is heavy in a stop-and-go queue. A white van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego car. A dark minivan slightly ahead to the left is also stopped in the adjacent lane, pacing the line and limiting any lane change. Oncoming vehicles move separately beyond the barrier without interacting. The overhead traffic lights ahead show red, maintaining the backlog.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver needs to stop to prevent a rear-end collision with the halted van caused by congestion."}
{"id": "train_03122", "split": "train", "clip_key": "2020-0226-101332_024876_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "024876"}, "frames": ["2020-0226-101332_024876_movie_t-3.jpg", "2020-0226-101332_024876_movie_t-2.jpg", "2020-0226-101332_024876_movie_t-1.jpg", "2020-0226-101332_024876_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with smooth pavement runs between mid-rise buildings, with three same-direction lanes and no physical median; traffic is queued at an intersection. A gray truck with a black tarp is stopped directly ahead in the ego lane because the overhead signal ahead shows red, holding the ego vehicle. In the adjacent left lane, a silver van and a dark sedan wait alongside in the queue, constraining a leftward lane change. On the right near the crosswalk, a construction worker stands by orange cones beside a small white truck, marking a roadside work area that narrows the curb lane.", "hazard_reasoning": "There is a gray truck with a black tarp stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop to maintain a safe distance and obey the traffic signal."}
{"id": "train_03123", "split": "train", "clip_key": "2020-0220-102630_094383_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "094383"}, "frames": ["2020-0220-102630_094383_movie_t-3.jpg", "2020-0220-102630_094383_movie_t-2.jpg", "2020-0220-102630_094383_movie_t-1.jpg", "2020-0220-102630_094383_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of merging motorcyclist.", "environment_perception": "An urban divided arterial with three same-direction lanes stretches ahead, with a landscaped median on the left and a guardrail on the right; the dry pavement looks smooth and traffic is moderate and steady. A black motorcycle ahead to the left moves right to change from the left lane into the ego lane, potentially merging in front. A light-colored sedan directly ahead in the ego lane continues at a steady pace, constraining the ego vehicle's speed. A large blue truck in the right adjacent lane holds its lane and proceeds straight alongside. An overhead direction sign indicates through movement, and a pedestrian overpass spans the roadway ahead.", "hazard_reasoning": "There is a black motorcycle lane changing from the left lane to the ego lane. Since the motorcycle is merging into the ego lane, the driver must be aware to avoid a potential side collision."}
{"id": "train_03124", "split": "train", "clip_key": "titan_clip_1118_000060_movie", "source": {"subset": "titan", "scenario": "clip_1118", "frame": "000060"}, "frames": ["titan_clip_1118_000060_movie_t-3.jpg", "titan_clip_1118_000060_movie_t-2.jpg", "titan_clip_1118_000060_movie_t-1.jpg", "titan_clip_1118_000060_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van.", "environment_perception": "An urban side street with a smooth surface and a painted centerline forms a two-way road, the ego vehicle proceeding in the left lane with very light traffic. A gray van stands curbside ahead on the left for loading, narrowing the available space in the ego lane. A lone pedestrian walks on the left sidewalk near a shop entrance ahead, parallel to traffic and remaining off the roadway. A small handcart sits at the near-left curb, stationary and partly in the shoulder. A blue pedestrian crossing sign is on the right, and large orange 30 markings indicate a 30 speed zone.", "hazard_reasoning": "There is a gray van parked on the left side of the road, because it is being loaded. The van reduces lane width and poses a collision risk, so the driver should carefully manoeuvre around it to maintain safe passage."}
{"id": "train_03125", "split": "train", "clip_key": "titan_clip_1117_000258_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1117_000258_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1117_000258_movie_t-3_augB1.jpg", "titan_clip_1117_000258_movie_t-2_augB1.jpg", "titan_clip_1117_000258_movie_t-1_augB1.jpg", "titan_clip_1117_000258_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The ego-vehicle travels on a narrow urban commercial street with a single undivided lane and smooth asphalt; traffic is light. Ahead, a white delivery truck is parked along the left curb and protrudes into the lane, constraining the ego's path. In front of it, a man wearing a cap unloads boxes onto a handcart and stands at the lane edge on the left in front of the ego-car because of the parked truck. Several pedestrians walk along the right sidewalk near restaurants while keeping clear of the lane. Crates and a dolly sit on the roadway beside the truck, further narrowing the passage, and short bollards line the right side.", "hazard_reasoning": "There is a man wearing a cap, unloading a handcart, and standing on the left side of the road, in front of the ego-car, because of the parked truck. The worker may step into traffic unexpectedly due to limited sidewalk space, so the driver should slow down."}
{"id": "train_03126", "split": "train", "clip_key": "2020-0218-103119_013129_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "013129"}, "frames": ["2020-0218-103119_013129_movie_t-3.jpg", "2020-0218-103119_013129_movie_t-2.jpg", "2020-0218-103119_013129_movie_t-1.jpg", "2020-0218-103119_013129_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the white van", "environment_perception": "An urban arterial with two lanes in our direction and a wide painted median has smooth pavement and light traffic. A white van ahead moves over from the left lane into the ego lane, cutting in front and reducing the following gap. Farther ahead in the next lane to the right, a dark minivan continues straight at a steady pace parallel to the ego vehicle. Across the median on the far right, a white van approaches in the opposite lanes, well separated from the ego path. An overhead circular sign shows 50, indicating the speed limit.", "hazard_reasoning": "A white van is cutting in front of the ego car from the left lane. This sudden lane change may reduce the safe gap, so the driver should be aware to maintain control and distance."}
{"id": "train_03127", "split": "train", "clip_key": "titan_clip_353_000318_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_353_000318_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_353_000318_movie_t-3_augB1.jpg", "titan_clip_353_000318_movie_t-2_augB1.jpg", "titan_clip_353_000318_movie_t-1_augB1.jpg", "titan_clip_353_000318_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of pedestrian", "environment_perception": "A narrow urban side street with brick paving runs between buildings, functioning as a two-way road without a centerline and carrying light, slow traffic on a smooth surface. A pedestrian wearing black pants comes from the right sidewalk and walks toward the intersection ahead, crossing into the roadway and may enter the ego lane. Another pedestrian on the left by a parking area moves along the curb past a parked white coupe, remaining off the lane. Far ahead in the same direction, a small white car proceeds away along the street, loosely setting the pace. A convex safety mirror at a left driveway and a no-parking sign on the right are visible, with bicycles parked along the right.", "hazard_reasoning": "There is a pedestrian wearing black pants walking from the right side towards the intersection. The pedestrian may step into the vehicle's path unexpectedly, so the driver should be aware of the pedestrian's movement."}
{"id": "train_03128", "split": "train", "clip_key": "2020-0227-104226_019154_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "019154"}, "frames": ["2020-0227-104226_019154_movie_t-3.jpg", "2020-0227-104226_019154_movie_t-2.jpg", "2020-0227-104226_019154_movie_t-1.jpg", "2020-0227-104226_019154_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under an elevated structure, with the ego in the rightmost lane beside a curb and guardrail on dry pavement as heavy traffic bunches up. A white van is stopped directly ahead in the ego lane because there is traffic congestion ahead, blocking the path and holding the ego vehicle. In the adjacent left lane, a light-blue hatchback and other cars inch forward in a queue, limiting chances to merge. More vehicles are lined up farther ahead beneath the viaduct, and a distant intersection with overhead signs is visible.", "hazard_reasoning": "There is a white van stopped in the ego lane because there is traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle."}
{"id": "train_03129", "split": "train", "clip_key": "titan_clip_1075_000564_movie", "source": {"subset": "titan", "scenario": "clip_1075", "frame": "000564"}, "frames": ["titan_clip_1075_000564_movie_t-3.jpg", "titan_clip_1075_000564_movie_t-2.jpg", "titan_clip_1075_000564_movie_t-1.jpg", "titan_clip_1075_000564_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A quiet urban residential two-way street with one narrow lane per direction climbs gently uphill, the pavement smooth and dry and traffic very light. A cyclist ahead in the ego lane slightly left of center approaches in the opposite direction at low speed, potentially encroaching on the ego vehicle's path. A person stands on the right sidewalk beside a wall-covered building, remaining stationary and uninvolved. Another person waits near the left curb by a utility pole on the sidewalk, posing no immediate interaction.", "hazard_reasoning": "No caption provided. There are no moving road users or obstacles requiring driver intervention; the road ahead is clear, so the driver may continue safely."}
{"id": "train_03130", "split": "train", "clip_key": "2020-0210-142719_004244_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "004244"}, "frames": ["2020-0210-142719_004244_movie_t-3.jpg", "2020-0210-142719_004244_movie_t-2.jpg", "2020-0210-142719_004244_movie_t-1.jpg", "2020-0210-142719_004244_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban commercial street with one lane in each direction, no median, and smooth pavement shows light, steady flow. Far ahead at the main intersection, a white hatchback stops in the ego lane in the middle of the junction, waiting to turn right and temporarily blocking our path. Slightly closer, a white van stands at the left curb ahead within the ego lane, protruding a little into the travel line and narrowing the usable width. On the right side in the oncoming direction, a large box truck is parked in a striped shoulder, stationary and outside our path. An overhead traffic signal and directional boards are visible above the intersection.", "hazard_reasoning": "There is a white hatchback stopping in the ego lane, at the middle of the intersection, because they are waiting to turn right. You should slow down to avoid colliding with the stationary hatchback blocking your path."}
{"id": "train_03131", "split": "train", "clip_key": "titan_clip_906_000492_movie", "source": {"subset": "titan", "scenario": "clip_906", "frame": "000492"}, "frames": ["titan_clip_906_000492_movie_t-3.jpg", "titan_clip_906_000492_movie_t-2.jpg", "titan_clip_906_000492_movie_t-1.jpg", "titan_clip_906_000492_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision with cyclist", "environment_perception": "An urban residential setting shows a narrow two-way road with edge lines but no center divider, smooth asphalt, and light traffic as the road curves gently right beside high walls that limit sight. A cyclist in a checkered shirt rides steadily toward the ego along the right side in the oncoming lane. Farther ahead near the bend, a white van travels in the oncoming lane. A white car is parked along the left shoulder close to the ego, reducing the usable width of the travel lane.", "hazard_reasoning": "There is a cyclist wearing a checkered shirt and cycling on the right side of the road, towards the ego car. You should slow down to avoid a potential collision with the cyclist."}
{"id": "train_03132", "split": "train", "clip_key": "2020-0220-102630_000432_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "000432"}, "frames": ["2020-0220-102630_000432_movie_t-3.jpg", "2020-0220-102630_000432_movie_t-2.jpg", "2020-0220-102630_000432_movie_t-1.jpg", "2020-0220-102630_000432_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial with smooth pavement approaches a wide signalized intersection beneath a pedestrian overpass; there is no central median and traffic is moderate and steady. A black sedan ahead shifts from the left lane into the ego lane and continues straight, moving into our path and likely setting the pace. To the right, a white SUV slightly ahead stays in the right lane and proceeds straight parallel to us without merging. Farther right, another white car continues in the outer lane and accelerates with the flow, posing no immediate interaction. Posts and railings line the right edge near the junction.", "hazard_reasoning": "There is a black sedan lane changing from the left lane to the ego lane. The black sedan is merging into your lane, reducing available space and increasing collision risk, so you should slow down to maintain a safe distance."}
{"id": "train_03133", "split": "train", "clip_key": "2020-0228-102841_009071_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "009071"}, "frames": ["2020-0228-102841_009071_movie_t-3.jpg", "2020-0228-102841_009071_movie_t-2.jpg", "2020-0228-102841_009071_movie_t-1.jpg", "2020-0228-102841_009071_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street approaches a signalized intersection, the asphalt dry and smooth, with moderate traffic that begins to flow more freely. A white van directly ahead in the ego lane accelerates away, driving off as the queue in front of it eases and creating a widening gap to the ego car. Oncoming vehicles beyond the intersection proceed in their opposite lanes without affecting the ego path. Cars on the cross street move laterally through the junction but stay clear of the ego lane. Overhead signals mark the junction, and flexible orange bollards line the right edge.", "hazard_reasoning": "There is a white van driving away from the ego car, because traffic congestion ahead is easing, in front of the van. The driver should follow the vehicle ahead to adapt to the easing traffic and maintain a safe following distance under the red light condition."}
{"id": "train_03134", "split": "train", "clip_key": "titan_clip_861_000168_movie", "source": {"subset": "titan", "scenario": "clip_861", "frame": "000168"}, "frames": ["titan_clip_861_000168_movie_t-3.jpg", "titan_clip_861_000168_movie_t-2.jpg", "titan_clip_861_000168_movie_t-1.jpg", "titan_clip_861_000168_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around cyclist", "environment_perception": "An urban two-way street with one lane per direction approaches a small Y-intersection that splits around a narrow central building; the pavement looks smooth and traffic is light. Ahead at the right edge in the ego lane, a cyclist with black hair wearing a white T-shirt pedals away along the right side through the junction, occupying the ego lane and may constrain the ego car's approach. No other moving vehicles appear either ahead or oncoming. A circular 30 speed-limit sign is posted on the right near a bus stop shelter.", "hazard_reasoning": "There is a cyclist with black hair, wearing a white t-shirt, who is cycling down the right side of the road, in the ego-lane, away from the ego-car. The driver should carefully manoeuvre around the cyclist to maintain a safe distance."}
{"id": "train_03135", "split": "train", "clip_key": "2020-0217-144444_004109_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "004109"}, "frames": ["2020-0217-144444_004109_movie_t-3.jpg", "2020-0217-144444_004109_movie_t-2.jpg", "2020-0217-144444_004109_movie_t-1.jpg", "2020-0217-144444_004109_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial carries three same-direction lanes beside a sidewalk and guardrail, with dry, smooth pavement and heavy, slow traffic queuing toward an intersection. A green sedan directly ahead in the ego lane is stopped for the red light and holds the ego vehicle. To the right, a black van in the adjacent lane is also stopped in the queue, remaining parallel to the sedan without edging into the ego lane. Farther ahead in the middle lane, a small truck creeps forward with the line of vehicles, shaping the overall pace. An overhead signboard spans the road, and no obstacles or work zones are visible.", "hazard_reasoning": "There is a green sedan stopped in the ego lane because of the red traffic light ahead on the road. The ego-vehicle should stop to avoid a collision with the halted vehicle ahead and comply with the traffic signal."}
{"id": "train_03136", "split": "train", "clip_key": "titan_clip_851_000222_movie", "source": {"subset": "titan", "scenario": "clip_851", "frame": "000222"}, "frames": ["titan_clip_851_000222_movie_t-3.jpg", "titan_clip_851_000222_movie_t-2.jpg", "titan_clip_851_000222_movie_t-1.jpg", "titan_clip_851_000222_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial intersection on a narrow two-way street is ahead, with smooth pavement, no median, and light vehicle flow but heavy pedestrian activity at a zebra crossing. Several pedestrians cross directly ahead across the ego lane in both directions, occupying the lane and blocking forward movement. A person in a gray T-shirt from the left side of the intersection walks toward the ego car and into the crosswalk, remaining in its path. On the right side, two pedestrians step off the curb and proceed leftward across the crosswalk, likely to enter the lane next. Farther ahead along the side street, more pedestrians continue crossing but are farther from the ego path.", "hazard_reasoning": "There is a gray T-shirt walking on the left side of the intersection, toward the ego car. The pedestrian may step into the vehicle's path from the left, so the driver should carefully manoeuvre around the pedestrian to avoid collision."}
{"id": "train_03137", "split": "train", "clip_key": "2020-0220-102630_027138_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "027138"}, "frames": ["2020-0220-102630_027138_movie_t-3.jpg", "2020-0220-102630_027138_movie_t-2.jpg", "2020-0220-102630_027138_movie_t-1.jpg", "2020-0220-102630_027138_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with stopped truck.", "environment_perception": "An urban multi-lane street with buildings tight to the curb has intact pavement and slow, congested flow in the same-direction lanes. A large white box truck directly ahead in the left ego lane is stopped because of traffic congestion ahead, blocking the lane and forcing the ego car to wait. A smaller covered truck in the adjacent right lane stands or creeps forward beside the ego vehicle, limiting room to merge around the blockage. Farther ahead in the right lane more vehicles queue, reinforcing the slow pace.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, because of traffic congestion ahead. The stopped truck indicates traffic congestion ahead and requires the driver to stop to avoid a rear-end collision."}
{"id": "train_03138", "split": "train", "clip_key": "titan_clip_1061_000546_movie", "source": {"subset": "titan", "scenario": "clip_1061", "frame": "000546"}, "frames": ["titan_clip_1061_000546_movie_t-3.jpg", "titan_clip_1061_000546_movie_t-2.jpg", "titan_clip_1061_000546_movie_t-1.jpg", "titan_clip_1061_000546_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A narrow urban side street without a centerline runs between close buildings; the pavement looks intact and traffic is light. A cyclist wearing a cap and yellow shirt rides ahead along the left side of the ego lane, to the left of and moving away from the ego vehicle, and constrains its pace. Farther ahead a small red truck in the same lane proceeds away toward a junction and slows near the corner. A pedestrian stands by the right curb near the truck, remaining on the sidewalk. A large stop marking is painted on the roadway with a red triangular stop sign above, and a parked three-wheeled scooter along the right edge narrows the usable lane.", "hazard_reasoning": "There is a cyclist, wearing a cap and a yellow shirt, riding in the ego lane, on the left hand side of the street, to the left of and away from the ego-car. The cyclist's proximity in the same lane creates a collision risk, so the driver should manoeuvre carefully to maintain a safe distance."}
{"id": "train_03139", "split": "train", "clip_key": "2020-0227-153144_023461_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "023461"}, "frames": ["2020-0227-153144_023461_movie_t-3.jpg", "2020-0227-153144_023461_movie_t-2.jpg", "2020-0227-153144_023461_movie_t-1.jpg", "2020-0227-153144_023461_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban boulevard with two lanes in the ego direction is divided from oncoming lanes by a fenced median; the asphalt is dry and traffic is light under strong sun glare. Ahead in the left lane, a small box truck slows and stops near the curb, partly occupying the lane and constraining the ego vehicle's pace. To the right at the pedestrian crosswalk, a pedestrian pushes a bicycle while crossing to the far side during a red light. In the opposite carriageway to the right of the median, a white van approaches and continues past as oncoming traffic.", "hazard_reasoning": "There is a pedestrian pushing a bicycle, crossing at the pedestrian crosswalk to the right side of the road, because of the red light. The driver must slow down to maintain a safe distance and avoid colliding with the crossing pedestrian."}
{"id": "train_03140", "split": "train", "clip_key": "2020-0210-101957_045850_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_045850_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_045850_movie_t-3_augB1.jpg", "2020-0210-101957_045850_movie_t-2_augB1.jpg", "2020-0210-101957_045850_movie_t-1_augB1.jpg", "2020-0210-101957_045850_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Start moving", "environment_perception": "An urban multi-lane arterial with two lanes each way and a painted median appears dry and in good condition, and heavy traffic begins to ease into a slow roll. Directly ahead in the ego lane, a black hatchback starts to move forward in front of the ego vehicle as congestion loosens. Ahead-left in the adjacent same-direction lane, a small white box truck creeps forward in parallel, remaining beside the ego car. Farther ahead, a short queue of cars proceeds gradually toward the next signalized junction. In the opposite direction on the right, oncoming traffic including a white truck moves steadily through the corridor.", "hazard_reasoning": "There is a black hatchback starting to drive in front of the ego car in the ego lane, because traffic is easing. Start moving to maintain safe distance as it merges ahead."}
{"id": "train_03141", "split": "train", "clip_key": "2020-0227-153144_019100_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "019100"}, "frames": ["2020-0227-153144_019100_movie_t-3.jpg", "2020-0227-153144_019100_movie_t-2.jpg", "2020-0227-153144_019100_movie_t-1.jpg", "2020-0227-153144_019100_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at red traffic light ahead", "environment_perception": "An urban multi-lane arterial with smooth pavement runs between tall buildings, with a fenced median on the right separating oncoming lanes; traffic is heavy and queuing at an intersection. A black hatchback directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. Vehicles in the adjacent left same-direction lane are also lined up and creeping forward. At the crosswalk ahead to the right, several pedestrians and a cyclist move across the roadway, occupying the intersection area. The signal facing the ego approach shows red while oncoming traffic beyond the median flows past without interacting.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car in the ego lane, because of the red traffic light. The driver should stop to avoid rear-ending the stationary hatchback at the red light."}
{"id": "train_03142", "split": "train", "clip_key": "2020-0129-144857_068131_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "068131"}, "frames": ["2020-0129-144857_068131_movie_t-3.jpg", "2020-0129-144857_068131_movie_t-2.jpg", "2020-0129-144857_068131_movie_t-1.jpg", "2020-0129-144857_068131_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three lanes in the ego direction is lined by a metal guardrail on the right; the pavement is dry and traffic is heavy and stop-and-go near a signalized intersection. A white hatchback directly ahead in the ego lane remains stopped because of congestion ahead, holding the ego vehicle. In the adjacent center lane to the left, a blue dump truck waits in the queue, limiting the view of the intersection. In the far-left lane, a black coupe alongside creeps forward and then stops with the traffic. Overhead gantry signs indicate through movements for the left and center lanes and a right-turn-only movement for the rightmost lane.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle."}
{"id": "train_03143", "split": "train", "clip_key": "2020-0207-151349_070889_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "070889"}, "frames": ["2020-0207-151349_070889_movie_t-3.jpg", "2020-0207-151349_070889_movie_t-2.jpg", "2020-0207-151349_070889_movie_t-1.jpg", "2020-0207-151349_070889_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial runs under an overpass with a concrete barrier on the right and dry pavement; traffic in this direction is queued at a signal. A black van directly ahead in the ego lane is stopped for the red light, holding the ego car. A white minibus slightly ahead to the left is also stopped at the light in an adjacent lane. On the lower parallel roadway beyond the barrier to the right, vehicles continue past without interacting. The signal ahead is clearly red.", "hazard_reasoning": "A black van is stopped in front of the ego car in the ego lane, because the light is red. You should stop to avoid a collision and obey the traffic signal."}
{"id": "train_03144", "split": "train", "clip_key": "2020-0226-140503_024791_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "024791"}, "frames": ["2020-0226-140503_024791_movie_t-3.jpg", "2020-0226-140503_024791_movie_t-2.jpg", "2020-0226-140503_024791_movie_t-1.jpg", "2020-0226-140503_024791_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Start moving", "environment_perception": "An urban two-way street with a solid yellow centerline and smooth dry pavement carries slow, moderate traffic. The ego vehicle travels in the left lane while buildings and hedges line both sides. A black sedan directly ahead in the ego lane slows to a stop, then rolls forward because a pedestrian crossing lies ahead, so it governs the ego car's pace. Farther ahead, a silver car followed by a white van also creeps straight with the queue, maintaining the slowdown. On the far right near the curb, a cyclist moves along the edge and remains outside the ego path. An overhead sign indicates straight ahead.", "hazard_reasoning": "There is a black sedan stopping and driving in front of the ego car because of a pedestrian crossing up ahead. Once the pedestrian has crossed, the driver should start moving to maintain traffic flow."}
{"id": "train_03145", "split": "train", "clip_key": "2020-0204-103442_017119_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "017119"}, "frames": ["2020-0204-103442_017119_movie_t-3.jpg", "2020-0204-103442_017119_movie_t-2.jpg", "2020-0204-103442_017119_movie_t-1.jpg", "2020-0204-103442_017119_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial runs under an elevated expressway with two same-direction lanes and a concrete barrier on the right; the dry pavement is in good condition and traffic is heavy and slow. A white SUV directly ahead in the ego lane creeps forward, constrained by congestion in front and setting the ego car's pace. A large coach bus ahead in the left lane moves slowly with the queue, effectively blocking view and passing options. A small silver van alongside in the left lane also inches ahead close to the bus and does not merge. Overhead blue directional signs are visible at the junction ahead.", "hazard_reasoning": "There is a white SUV driving slowly in front of the ego car, because of traffic congestion ahead. Follow the vehicle ahead to match its reduced speed and avoid sudden braking."}
{"id": "train_03146", "split": "train", "clip_key": "2020-0210-101957_024712_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "024712"}, "frames": ["2020-0210-101957_024712_movie_t-3.jpg", "2020-0210-101957_024712_movie_t-2.jpg", "2020-0210-101957_024712_movie_t-1.jpg", "2020-0210-101957_024712_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way road with one lane in each direction has a hatched median and smooth pavement, and traffic is light as the vehicle approaches a signalized intersection. Ahead in the ego lane, a dark two-wheeler rides away toward the junction, occupying the lane and setting the ego car's pace. To the right, a black van in the oncoming lane approaches through the intersection and passes by without deviating. Farther right, another oncoming vehicle continues straight in its lane. An overhead traffic signal is present at the intersection, though its aspect is not clearly visible.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane, away from the ego car, because of a green traffic light. The green signal may change soon, so you should follow the vehicle ahead to maintain a safe distance and avoid running a red light."}
{"id": "train_03147", "split": "train", "clip_key": "titan_clip_82_000786_movie", "source": {"subset": "titan", "scenario": "clip_82", "frame": "000786"}, "frames": ["titan_clip_82_000786_movie_t-3.jpg", "titan_clip_82_000786_movie_t-2.jpg", "titan_clip_82_000786_movie_t-1.jpg", "titan_clip_82_000786_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of pedestrian crossing ahead", "environment_perception": "An urban intersection on a narrow city street has smooth pavement and no visible center divider, and traffic is light with no vehicles ahead or oncoming. Ahead, a pedestrian wearing a black suit crosses the zebra crosswalk from right to left directly in front of the ego vehicle, controlling its pace as it yields. On the right sidewalk at the corner, another person stands beside the crosswalk and remains stationary, not entering the roadway. A third pedestrian walks along the left sidewalk near a building entrance, parallel to the road and clear of the lane.", "hazard_reasoning": "There is a pedestrian wearing a black suit and pants crossing on a crosswalk from the right side to the left side. Be cautious because the crossing pedestrian may enter the vehicle's path unexpectedly and require immediate response."}
{"id": "train_03148", "split": "train", "clip_key": "2020-0129-144857_011543_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "011543"}, "frames": ["2020-0129-144857_011543_movie_t-3.jpg", "2020-0129-144857_011543_movie_t-2.jpg", "2020-0129-144857_011543_movie_t-1.jpg", "2020-0129-144857_011543_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way arterial approaches a wide signalized intersection, with two same-direction lanes and a guardrail median on the right; the asphalt looks smooth and traffic is moderate. A silver hatchback directly ahead in the ego lane slows and begins a right turn across the junction, constraining the ego vehicle's pace. In the opposite lanes ahead, a white microvan proceeds through the intersection from right to left in front of the turning hatchback. A bus is visible farther ahead beyond the junction in the same corridor moving away. A pedestrian stands on the near-right sidewalk by the crosswalk and remains off the roadway.", "hazard_reasoning": "There is a silver hatchback in front of the ego car in the ego lane, turning right. The hatchback's turn may cause it to slow or deviate from its lane unexpectedly, so maintain position and follow it safely."}
{"id": "train_03149", "split": "train", "clip_key": "2020-0228-150133_007716_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "007716"}, "frames": ["2020-0228-150133_007716_movie_t-3.jpg", "2020-0228-150133_007716_movie_t-2.jpg", "2020-0228-150133_007716_movie_t-1.jpg", "2020-0228-150133_007716_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane road with a solid center line and smooth pavement; traffic is light as vehicles wait at an intersection. A white box truck directly ahead in the ego lane is stopped at a red traffic light, holding the ego car. On the cross street to the left, a white bus moves through the intersection from left to right while our approach remains halted. Several pedestrians on the right sidewalk walk and wait near the crosswalk but stay out of the roadway. The overhead signal facing the ego shows red, and bicycles are parked behind railings along the left curb.", "hazard_reasoning": "There is a white truck that has stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver needs to stop to maintain a safe distance and avoid rear-ending the halted vehicle."}
{"id": "train_03150", "split": "train", "clip_key": "2020-0129-144857_045906_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "045906"}, "frames": ["2020-0129-144857_045906_movie_t-3.jpg", "2020-0129-144857_045906_movie_t-2.jpg", "2020-0129-144857_045906_movie_t-1.jpg", "2020-0129-144857_045906_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs beneath elevated expressways, with good pavement and a guardrail separating a side lane on the right; traffic is heavy and queued at an intersection. A gray box truck is stopped directly ahead in the ego lane because the overhead traffic signal shows red, holding the ego car in place. In the adjacent lane to the left, a line of cars inches forward toward the stop line, keeping pace with the queue. On the right beyond the guardrail, a white minivan and other vehicles proceed slowly along a parallel lane without merging into the ego path.", "hazard_reasoning": "There is a gray truck stopped in front of the ego-car, in the ego lane, because of a red traffic light ahead. The stopped truck blocks the lane due to the red light, requiring the driver to halt to avoid collision."}
{"id": "train_03151", "split": "train", "clip_key": "2020-0218-151547_001546_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "001546"}, "frames": ["2020-0218-151547_001546_movie_t-3.jpg", "2020-0218-151547_001546_movie_t-2.jpg", "2020-0218-151547_001546_movie_t-1.jpg", "2020-0218-151547_001546_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with a single left-side through lane approaches a signalized intersection, bounded by a concrete median on the right and a sidewalk on the left; the pavement looks smooth and traffic is heavy and queued. A silver hatchback directly ahead in the ego lane is stopped for the red light and blocks the ego vehicle's progress. A small white delivery scooter just ahead along the left curb edges forward past the queue and may merge back in front. Across the median to the right, oncoming lanes carry dense, slow traffic through the junction. Overhead traffic lights show red for the ego direction, with signs indicating straight and right movements.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, because of the red traffic lights. The driver should stop to avoid colliding with the halted vehicle and obey the traffic signal."}
{"id": "train_03152", "split": "train", "clip_key": "2020-0226-140503_011241_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "011241"}, "frames": ["2020-0226-140503_011241_movie_t-3.jpg", "2020-0226-140503_011241_movie_t-2.jpg", "2020-0226-140503_011241_movie_t-1.jpg", "2020-0226-140503_011241_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban street with mid-rise buildings, two same-direction lanes, no median divider, and smooth pavement carries moderate traffic that bunches at a signal. Ahead in the ego lane, a green van is stopped for a red light, constraining the ego car's pace. In the adjacent right lane near the ego vehicle, a silver minivan is also stopped alongside at the queue, remaining parallel to the ego path. Farther ahead in the right lane, a dark SUV waits behind other cars, continuing the line with no immediate conflict. The overhead signal shows red for the approach. A parked yellow delivery truck and a bus stop on the left edge reduce shoulder space.", "hazard_reasoning": "There is a green van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid a collision with the halted vehicle ahead at the red light."}
{"id": "train_03153", "split": "train", "clip_key": "2020-0129-105040_101987_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "101987"}, "frames": ["2020-0129-105040_101987_movie_t-3.jpg", "2020-0129-105040_101987_movie_t-2.jpg", "2020-0129-105040_101987_movie_t-1.jpg", "2020-0129-105040_101987_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs toward a signalized intersection, with a fenced median on the right; the dry pavement and dense platoons make traffic flow slow to stop-and-go. A small white truck directly ahead in the ego lane slows repeatedly because of congestion ahead, constraining the ego car's pace. Slightly ahead to the left, a dark minivan continues straight at a similar slow speed, occupying the adjacent lane and limiting leftward maneuvering. To the right near the median, a car?arrier truck proceeds alongside at low speed, narrowing space for right-side lane changes. On the far left edge, a motorcycle moves forward near the curb past queued vehicles, traveling close to the ego lane. Overhead signals and a gantry are visible ahead.", "hazard_reasoning": "There is a white truck slowing in the ego-car lane because of traffic congestion ahead. The driver should slow down to maintain a safe following distance due to the congestion."}
{"id": "train_03154", "split": "train", "clip_key": "titan_clip_1_000054_movie", "source": {"subset": "titan", "scenario": "clip_1", "frame": "000054"}, "frames": ["titan_clip_1_000054_movie_t-3.jpg", "titan_clip_1_000054_movie_t-2.jpg", "titan_clip_1_000054_movie_t-1.jpg", "titan_clip_1_000054_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the stopped truck", "environment_perception": "A narrow urban street lined with shops has no center divider, dry pavement, and light traffic as the road curves slightly right ahead. A white box truck is stopped ahead on the left in the ego lane, occupying most of the lane and constraining progress. Along the left edge near this truck, a pedestrian in a blue shirt walks away from the camera beside the curb, close to the roadway. Farther ahead beyond the obstruction, a dark truck continues forward in the same direction and moves away. Boxes and displays along the right storefront spill near the roadway, reducing the usable width.", "hazard_reasoning": "There is a white truck stopped on the left side of the road, in the ego-lane. You should manoeuvre carefully because it blocks your lane and reduces visibility into the adjacent lane."}
{"id": "train_03155", "split": "train", "clip_key": "titan_clip_456_000462_movie", "source": {"subset": "titan", "scenario": "clip_456", "frame": "000462"}, "frames": ["titan_clip_456_000462_movie_t-3.jpg", "titan_clip_456_000462_movie_t-2.jpg", "titan_clip_456_000462_movie_t-1.jpg", "titan_clip_456_000462_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cones ahead", "environment_perception": "An urban scene shows a narrow two-way street with one lane each direction, smooth pavement, and light traffic as the ego vehicle heads uphill. Orange traffic cones line the right side of the ego lane, creating a temporary narrow corridor. A white truck approaches ahead in the oncoming lane past the cones, moving slowly and staying within its lane while limiting lateral space. A pedestrian stands on the left sidewalk beside parked bicycles and remains clear of the road. A temporary roadside sign with an upward arrow stands at the left curb.", "hazard_reasoning": "There are orange traffic cones along the right side of the lane. These cones narrow the lane and create potential obstructions, so the driver should be aware to maintain proper lane positioning."}
{"id": "train_03156", "split": "train", "clip_key": "titan_clip_401_000522_movie", "source": {"subset": "titan", "scenario": "clip_401", "frame": "000522"}, "frames": ["titan_clip_401_000522_movie_t-3.jpg", "titan_clip_401_000522_movie_t-2.jpg", "titan_clip_401_000522_movie_t-1.jpg", "titan_clip_401_000522_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way street with no median and interlocking brick pavement runs between close buildings, and traffic is light. On the left ahead, a pedestrian wearing a white shirt and carrying a white bag walks away from the ego vehicle along the curb, and could step near the travel path. On the right close to the ego lane, another pedestrian emerges in front of a parked box truck and walks toward the ego vehicle, briefly narrowing space. Far ahead in the opposite direction, a small truck approaches in the oncoming lane at low speed. A large box truck is stopped on the right and a white van is parked along the left edge, further constricting the narrow roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a white bag, and walking, on the left side of the road, away from the ego-car. The pedestrian may step into the lane from the left, so the driver needs to manoeuvre carefully around them to avoid a collision."}
{"id": "train_03157", "split": "train", "clip_key": "2020-0227-104226_040881_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "040881"}, "frames": ["2020-0227-104226_040881_movie_t-3.jpg", "2020-0227-104226_040881_movie_t-2.jpg", "2020-0227-104226_040881_movie_t-1.jpg", "2020-0227-104226_040881_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane in each direction and a solid yellow centerline has smooth pavement and light to moderate flow. A black microvan immediately ahead in the ego lane moves slowly, constrained by a white hatchback stopped farther ahead in the same lane because of congestion. An oncoming dark minivan advances in the right lane toward the camera's direction and continues straight without deviating.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane because of traffic congestion ahead, in front of the ego car. The driver should stop to maintain a safe following distance and avoid a rear-end collision under these conditions."}
{"id": "train_03158", "split": "train", "clip_key": "titan_clip_689_000408_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_689_000408_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_689_000408_movie_t-3_augB1.jpg", "titan_clip_689_000408_movie_t-2_augB1.jpg", "titan_clip_689_000408_movie_t-1_augB1.jpg", "titan_clip_689_000408_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way roadway has no median and dry pavement, and vehicular traffic is very light. The ego vehicle proceeds slowly along the left side as pedestrians occupy the street. Ahead in the middle of the lane, a pedestrian carrying a backpack and wearing black pants walks away from the car, occupying the center of the road and directly in the ego path. Along the right edge near storefronts, a woman walks forward beside menu boards, close to the travel lane. On the left, another person steps from a shop area toward the curb, moving toward the lane. Farther ahead, a small group of pedestrians continues along the street, with a few crossing the corridor. Restaurant signboards and parked bicycles narrow the margins, and no signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian carrying a backpack, wearing black pants, walking in the middle of the road, away from the ego car. The pedestrian's position in the center of the roadway poses a collision risk, so the driver should slow down to maintain safety."}
{"id": "train_03159", "split": "train", "clip_key": "2020-0210-101957_019288_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "019288"}, "frames": ["2020-0210-101957_019288_movie_t-3.jpg", "2020-0210-101957_019288_movie_t-2.jpg", "2020-0210-101957_019288_movie_t-1.jpg", "2020-0210-101957_019288_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with three same-direction lanes has smooth asphalt and heavy traffic halted near an intersection. A black motorcycle directly ahead in the ego lane waits at a red signal, holding the ego car. To the right, a large silver box truck stands in the adjacent lane slightly ahead, limiting right-side visibility and progress. To the left, a queue of cars including a black minivan stops alongside in the neighboring lane, matching the halt. Farther ahead in the ego lane a white van waits in line beyond the motorcycle. Overhead blue direction signs for Route 8 and local destinations hang above the road.", "hazard_reasoning": "A black motorcycle is stopped in front of the ego car in the ego lane, because the light is red. You should stop because the motorcycle is halted at the red light directly ahead and failing to stop could result in a rear-end collision."}
{"id": "train_03160", "split": "train", "clip_key": "2020-0213-143552_053249_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "053249"}, "frames": ["2020-0213-143552_053249_movie_t-3.jpg", "2020-0213-143552_053249_movie_t-2.jpg", "2020-0213-143552_053249_movie_t-1.jpg", "2020-0213-143552_053249_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided two-way road with a narrow raised median and dry pavement approaches a signalized intersection, and traffic is light and steady. A white box truck ahead in the ego lane continues straight through the green light, gently limiting the ego car's speed. Beyond the median to the right, a white car in the oncoming lane is stopped at the intersection, waiting at the line without entering the ego path. A motorcycle near the oncoming side of the crosswalk slows and stays to the edge, also outside the ego lane. The overhead signal facing the ego vehicle is green.", "hazard_reasoning": "There is a white truck driving in front of the ego car in the ego lane, because of the green traffic light. The driver should be aware of the truck as it may slow down or brake unexpectedly."}
{"id": "train_03161", "split": "train", "clip_key": "2020-0218-103119_040461_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "040461"}, "frames": ["2020-0218-103119_040461_movie_t-3.jpg", "2020-0218-103119_040461_movie_t-2.jpg", "2020-0218-103119_040461_movie_t-1.jpg", "2020-0218-103119_040461_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck braking ahead", "environment_perception": "An urban two-way street with one lane in each direction and double white center lines passes between mid-rise buildings; the pavement looks smooth and traffic is light. A white box truck directly ahead in the ego lane brakes, causing the ego vehicle to slow behind it. An oncoming black van travels past in the right-side lane, continuing straight without affecting the ego path. No traffic signals are visible in the scene.", "hazard_reasoning": "There is a white truck breaking in the ego lane, in front of the ego car. The truck's sudden braking could force the ego vehicle to decelerate quickly, risking a collision if the driver is not prepared."}
{"id": "train_03162", "split": "train", "clip_key": "2020-0213-143552_009687_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009687"}, "frames": ["2020-0213-143552_009687_movie_t-3.jpg", "2020-0213-143552_009687_movie_t-2.jpg", "2020-0213-143552_009687_movie_t-1.jpg", "2020-0213-143552_009687_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the sedan changing lanes ahead", "environment_perception": "An urban two-way road with left-hand traffic has two same-direction lanes and no median; pavement is smooth and flow is light to moderate, with orange cones and a standing sign narrowing the ego lane. Ahead, a black sedan changes from the ego lane into the right lane. To the right front, a silver hatchback travels straight in the right lane at a steady pace. On the opposite side, an oncoming white truck approaches in its lane. Several parked vans line the curb further ahead but stay outside the travel lanes.", "hazard_reasoning": "There is a black sedan in front of the ego-car, that is changing lanes from the ego lane, to the right lane. The sedan's merging could enter your path, so be aware and maintain a safe following distance."}
{"id": "train_03163", "split": "train", "clip_key": "2020-0131-135401_003652_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003652"}, "frames": ["2020-0131-135401_003652_movie_t-3.jpg", "2020-0131-135401_003652_movie_t-2.jpg", "2020-0131-135401_003652_movie_t-1.jpg", "2020-0131-135401_003652_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "A narrow urban two-way street with a solid centerline runs between apartment buildings and a fenced sidewalk; pavement looks smooth and traffic is light with no oncoming vehicles. A white box truck is stopped directly ahead in the left ego lane, blocking the path and holding the ego vehicle. On the left sidewalk near the truck's rear, a person with a bicycle moves slowly along the curb. Farther ahead on the left, another pedestrian walks by the buildings. An overhead speed-limit sign shows 40, and strong sun glare from the right casts long shadows across the roadway.", "hazard_reasoning": "There is a white truck stopped in front of the ego car. The stationary truck ahead blocks the lane, so the driver must stop to avoid a rear-end collision."}
{"id": "train_03164", "split": "train", "clip_key": "2020-0225-145150_028254_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "028254"}, "frames": ["2020-0225-145150_028254_movie_t-3.jpg", "2020-0225-145150_028254_movie_t-2.jpg", "2020-0225-145150_028254_movie_t-1.jpg", "2020-0225-145150_028254_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with two lanes in each direction runs straight with a painted median and smooth pavement, and light traffic flows steadily. A blue truck ahead in the ego lane pulls away from the camera, moving ahead because the space in front of it is clear. Farther ahead, a white van in the same direction continues straight at a similar pace, not affecting the ego lane. On the far right, occasional oncoming cars travel beyond the median with no interaction. To the left, pedestrians walk along the fenced sidewalk while a small white van is stopped at the curb, both remaining outside the roadway.", "hazard_reasoning": "There is a blue truck driving in the ego lane, away from the ego car, because the traffic ahead is clear. You should follow the vehicle ahead to maintain a safe distance and reduce the risk of sudden braking collisions."}
{"id": "train_03165", "split": "train", "clip_key": "titan_clip_586_000342_movie", "source": {"subset": "titan", "scenario": "clip_586", "frame": "000342"}, "frames": ["titan_clip_586_000342_movie_t-3.jpg", "titan_clip_586_000342_movie_t-2.jpg", "titan_clip_586_000342_movie_t-1.jpg", "titan_clip_586_000342_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one narrow lane per direction and no median appears dry and smooth, and traffic is light with several vehicles standing by the curb. Ahead in the ego lane, a black taxi is stopped in the roadway, slowing the ego vehicle. From the left side near this taxi, a woman in a gray jacket and blue shorts carrying a handbag walks across the ego path toward the right sidewalk, passing in front of the taxi and occupying the lane briefly. Parked cars, including a white minivan, line the left curb and further narrow the available space. The oncoming lane to the right is clear of moving traffic.", "hazard_reasoning": "There is a tall woman wearing a gray jacket and blue shorts, carrying a handbag, and walking from the left side to the right side because she has just got out of a taxi. The driver must stop to avoid colliding with this crossing pedestrian under the green signal."}
{"id": "train_03166", "split": "train", "clip_key": "2020-0131-135401_004982_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "004982"}, "frames": ["2020-0131-135401_004982_movie_t-3.jpg", "2020-0131-135401_004982_movie_t-2.jpg", "2020-0131-135401_004982_movie_t-1.jpg", "2020-0131-135401_004982_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-way road with smooth pavement and a narrow raised curb island on the left appears lightly trafficked. A white box truck is stopped directly ahead in the ego lane, blocking the path. To the right, an oncoming sedan near the truck's front slows in the opposing lane where space is tight. On the left sidewalk, three pedestrians walk away from the camera along the building line and stay off the roadway. An overhead sign shows 40 as the posted speed. Bright sun glare from the upper right and the roadside curb island add visual and spatial constraints.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The driver should stop because the stopped truck blocks the lane ahead and continuing may lead to a collision."}
{"id": "train_03167", "split": "train", "clip_key": "2020-0207-151349_090162_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "090162"}, "frames": ["2020-0207-151349_090162_movie_t-3.jpg", "2020-0207-151349_090162_movie_t-2.jpg", "2020-0207-151349_090162_movie_t-1.jpg", "2020-0207-151349_090162_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of the white van.", "environment_perception": "An urban divided arterial with three same-direction lanes and a hedge median runs straight on dry, smooth pavement; traffic is light and the low sun ahead creates glare while flow stays steady. Ahead left, a white van moves right into the ego lane, cutting in front because the left lane is obstructed by a parked car near the curb. Farther ahead, a small van continues in the center lane at a steady speed and becomes the lead vehicle. Other cars proceed in the right lane without interacting with the ego path.", "hazard_reasoning": "There is a white van cutting in front of the ego car from the left lane, because of the parked vehicle. The white van's unexpected merge increases collision risk, so the driver should be cautious."}
{"id": "train_03168", "split": "train", "clip_key": "titan_clip_912_000252_movie", "source": {"subset": "titan", "scenario": "clip_912", "frame": "000252"}, "frames": ["titan_clip_912_000252_movie_t-3.jpg", "titan_clip_912_000252_movie_t-2.jpg", "titan_clip_912_000252_movie_t-1.jpg", "titan_clip_912_000252_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban shopping street with a single narrow two-way lane and no median is shown; the pavement looks smooth and motor traffic is light with no vehicles immediately ahead or oncoming. On the right edge, a pedestrian in a white shirt carrying a handbag walks toward the camera along the curb and may step into the lane. Farther ahead near the center of the roadway, a man walks toward the ego vehicle in the travel path, constraining its pace. By the right-side storefront, an adult with a stroller and a small child wait at the edge and may enter the lane. Orange cones and shop displays line the right curb, slightly narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and is carrying a handbag walking toward the ego car, on the right side of the road. The driver should carefully manoeuvre around the pedestrian who is approaching the vehicle to prevent a potential collision."}
{"id": "train_03169", "split": "train", "clip_key": "2020-0226-140503_079509_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "079509"}, "frames": ["2020-0226-140503_079509_movie_t-3.jpg", "2020-0226-140503_079509_movie_t-2.jpg", "2020-0226-140503_079509_movie_t-1.jpg", "2020-0226-140503_079509_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy, stop-and-go traffic in both directions as the ego car queues in the left lane. Immediately ahead, a white hatchback is stopped in the ego lane because of congestion, holding the ego vehicle. Slightly forward to the right, a silver sedan in the adjacent same-direction lane creeps ahead parallel to the queue, keeping close beside the hatchback. On the right side of the roadway, an oncoming white cargo truck rolls past slowly in the opposite lane. Farther ahead, long lines of vehicles stretch down the street with intermittent halts, confirming the jam.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of traffic congestion ahead. Stop to avoid collision with the halted vehicle."}
{"id": "train_03170", "split": "train", "clip_key": "titan_clip_259_000204_movie", "source": {"subset": "titan", "scenario": "clip_259", "frame": "000204"}, "frames": ["titan_clip_259_000204_movie_t-3.jpg", "titan_clip_259_000204_movie_t-2.jpg", "titan_clip_259_000204_movie_t-1.jpg", "titan_clip_259_000204_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban arterial with two lanes in each direction and no median approaches a wide signalized intersection; the pavement is smooth and traffic is light with a few oncoming cars beyond the junction. A small white car ahead in the ego lane proceeds straight through the intersection, setting a steady pace. At the near-left corner, a pedestrian wearing a cap holds a bicycle and waits at the zebra crossing because the crosswalk sign keeps them from crossing. On the near-right corner, a person with an umbrella stands at the curb waiting to cross while remaining clear of the ego lane.", "hazard_reasoning": "There is a pedestrian wearing a cap, holding a bicycle, and waiting to cross at a pedestrian crossing because of the crosswalk sign. The pedestrian may step into the roadway when allowed, so the driver should yield to prevent a potential collision."}
{"id": "train_03171", "split": "train", "clip_key": "titan_clip_512_000426_movie", "source": {"subset": "titan", "scenario": "clip_512", "frame": "000426"}, "frames": ["titan_clip_512_000426_movie_t-3.jpg", "titan_clip_512_000426_movie_t-2.jpg", "titan_clip_512_000426_movie_t-1.jpg", "titan_clip_512_000426_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the van carefully", "environment_perception": "A narrow two-way urban street with no median and smooth pavement is shown, and traffic is light. Ahead, a white van is parked on the left side of the road, narrowing the available lane for the ego vehicle. At the near left corner, a woman with a parasol stands at the curb and faces the roadway, which means she may step into the ego path. On the right sidewalk, several adults with strollers and a person holding a bicycle wait by the curb and remain off the roadway. No salient signals or speed signs are visible, and there is no oncoming traffic.", "hazard_reasoning": "A white van, parked on the left side of the road. It creates a blind spot on the curve ahead, so the driver should manoeuvre around the van carefully to maintain visibility and avoid collisions."}
{"id": "train_03172", "split": "train", "clip_key": "2020-0203-154554_036732_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "036732"}, "frames": ["2020-0203-154554_036732_movie_t-3.jpg", "2020-0203-154554_036732_movie_t-2.jpg", "2020-0203-154554_036732_movie_t-1.jpg", "2020-0203-154554_036732_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street under an elevated expressway has two same-direction lanes with no median; the pavement is dry and traffic moves slowly. In the ego lane ahead, a gray SUV slows because of congestion further up the road, setting the ego car's pace. In the adjacent right lane, a queue of vehicles including a large box truck and a white SUV is stopped or creeping beside the ego car, narrowing lateral space. On the left sidewalk, several pedestrians walk past storefronts behind a guardrail and stay off the roadway.", "hazard_reasoning": "There is a gray SUV slowing in front of the ego car, in the ego lane, because of the traffic congestion ahead. The driver should reduce speed to maintain a safe following distance and avoid a rear-end collision under slowing traffic conditions."}
{"id": "train_03173", "split": "train", "clip_key": "2020-0226-101332_048595_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "048595"}, "frames": ["2020-0226-101332_048595_movie_t-3.jpg", "2020-0226-101332_048595_movie_t-2.jpg", "2020-0226-101332_048595_movie_t-1.jpg", "2020-0226-101332_048595_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of lane change ahead", "environment_perception": "An urban divided arterial with two same-direction lanes runs past shops, with a metal guardrail median to the right separating busy oncoming traffic; the dry pavement is smooth and traffic is moderate toward a signalized intersection ahead. A green taxi ahead in the ego lane changes left into the curb lane, momentarily shaping the ego vehicle's pace as it merges. A red station wagon travels in the left lane beside the ego vehicle, continuing straight at a steady speed and paralleling the ego path. On the far side of the median, several vans and cars approach in the opposite direction, moving freely and remaining separated. Overhead gantry signals for the upcoming intersection are visible.", "hazard_reasoning": "There is a green taxi changing lanes from the ego lane to the left lane. The taxi's unexpected lateral movement could conflict with the ego vehicle's path, so be aware of lane changes to adjust speed or position accordingly."}
{"id": "train_03174", "split": "train", "clip_key": "titan_clip_138_000450_movie", "source": {"subset": "titan", "scenario": "clip_138", "frame": "000450"}, "frames": ["titan_clip_138_000450_movie_t-3.jpg", "titan_clip_138_000450_movie_t-2.jpg", "titan_clip_138_000450_movie_t-1.jpg", "titan_clip_138_000450_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrian", "environment_perception": "A narrow urban street between office buildings runs straight with a single lane and no median; the pavement is smooth and traffic is light. On the right side ahead, a pedestrian wearing black pants walks toward the ego car along the curb and may step into the lane. Just ahead on the right, a large box truck is stopped at the curb near a building entrance, narrowing the usable lane and affecting the ego vehicle's clearance. Along the left curb beside the ego vehicle, a dark sedan remains parked, further constricting space as the car proceeds. Strong sun glare from the front slightly washes out the scene.", "hazard_reasoning": "There is a pedestrian wearing black pants and walking on the right side of the road, towards the ego car. The pedestrian could step into the lane unexpectedly, so the driver should be cautious of their approach."}
{"id": "train_03175", "split": "train", "clip_key": "2020-0204-103442_080301_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "080301"}, "frames": ["2020-0204-103442_080301_movie_t-3.jpg", "2020-0204-103442_080301_movie_t-2.jpg", "2020-0204-103442_080301_movie_t-1.jpg", "2020-0204-103442_080301_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane two-way street with a solid yellow centerline and side guardrails runs straight ahead; the pavement looks smooth and traffic is light. A black sedan ahead in the ego lane slows down, so the ego vehicle follows its pace. An oncoming white car approaches in the opposite lane at a steady speed and remains well separated. A pedestrian walks along the right sidewalk behind the railing and does not interact with traffic. An overhead traffic signal is visible farther ahead above the roadway, marking a signalized intersection. No obstacles or work zones appear in the lane.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane. You should slow down because the black sedan ahead is decelerating and may brake sharply."}
{"id": "train_03176", "split": "train", "clip_key": "titan_clip_368_000024_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_368_000024_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_368_000024_movie_t-3_augB1.jpg", "titan_clip_368_000024_movie_t-2_augB1.jpg", "titan_clip_368_000024_movie_t-1_augB1.jpg", "titan_clip_368_000024_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street with no centerline runs between low-rise buildings, the pavement is smooth, and traffic is light as the ego vehicle proceeds straight along the left side. Ahead on the right, a pedestrian in a black T-shirt and black pants walks in the middle of the roadway, occupying the center-right and reducing available space. Farther ahead on the right curb, a white delivery truck stands stopped, further narrowing the oncoming side of the road. A second pedestrian moves along the left sidewalk near a building, remaining off the carriageway.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and black pants, and walking in the middle of the road, to the right side. The driver should slow down because the pedestrian walking in the roadway may cross the vehicle's path and pose a collision risk."}
{"id": "train_03177", "split": "train", "clip_key": "2020-0205-152530_063444_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "063444"}, "frames": ["2020-0205-152530_063444_movie_t-3.jpg", "2020-0205-152530_063444_movie_t-2.jpg", "2020-0205-152530_063444_movie_t-1.jpg", "2020-0205-152530_063444_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "On an urban expressway under elevated viaducts, the ego car follows a two-lane same-direction roadway with a short right-side merge area, smooth pavement, and moderate, slow-moving traffic. A large white box truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. To the left, a small white pickup travels alongside and inches ahead, limiting room to change lanes. Farther ahead in the left lane, a blue container truck proceeds slowly and queues behind traffic, contributing to the sluggish flow.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_03178", "split": "train", "clip_key": "2020-0228-150133_060818_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "060818"}, "frames": ["2020-0228-150133_060818_movie_t-3.jpg", "2020-0228-150133_060818_movie_t-2.jpg", "2020-0228-150133_060818_movie_t-1.jpg", "2020-0228-150133_060818_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial in Japan has two same-direction lanes on the left and oncoming lanes to the right, with smooth asphalt and heavy traffic queued near an intersection under a pedestrian overpass. A gray sedan directly ahead in the ego lane is stopped for a red light, holding the ego car. To the left, a white box truck alongside in the adjacent same-direction lane is also stationary, constraining lane changes. Slightly farther ahead in that left lane, a white van waits in the line, moving only minimally with the queue. Far ahead the traffic signal faces the scene and shows red, keeping vehicles in both same-direction lanes stopped.", "hazard_reasoning": "There is a gray sedan stopped in the ego lane, in front of the ego car, because of a red traffic light. You must stop to avoid a rear-end collision."}
{"id": "train_03179", "split": "train", "clip_key": "titan_clip_1216_000492_movie", "source": {"subset": "titan", "scenario": "clip_1216", "frame": "000492"}, "frames": ["titan_clip_1216_000492_movie_t-3.jpg", "titan_clip_1216_000492_movie_t-2.jpg", "titan_clip_1216_000492_movie_t-1.jpg", "titan_clip_1216_000492_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian on the lane.", "environment_perception": "A narrow urban street with a single undivided lane runs between close-set buildings; the pavement is smooth and vehicular traffic is absent. On the left edge near the ego path, a pedestrian wearing a backpack and a white shirt walks away from the ego car along the lane, narrowing room to pass. Ahead in the center, several men proceed away and drift across the lane, occupying the ego lane and reducing available space. On the right by the curb, a woman in a white top walks toward the camera along the edge, close to the travel path. A bicycle is parked at the right curb beside a shopfront, further tightening the corridor.", "hazard_reasoning": "There is a pedestrian wearing a backpack and a white shirt, walking along the left side of the lane, away from the ego car. The pedestrian's proximity to the traffic lane increases the risk of sudden crossing, so the driver should be aware to anticipate any unexpected movement."}
{"id": "train_03180", "split": "train", "clip_key": "2020-0218-103119_006227_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "006227"}, "frames": ["2020-0218-103119_006227_movie_t-3.jpg", "2020-0218-103119_006227_movie_t-2.jpg", "2020-0218-103119_006227_movie_t-1.jpg", "2020-0218-103119_006227_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the stopped sedan", "environment_perception": "A narrow urban residential street with two-way traffic and no centerline runs ahead, bordered by green edge strips on smooth pavement, and traffic is light and slow. A dark hatchback ahead in the ego lane continues straight at low speed, effectively setting the pace. Farther ahead in the opposite lane, a small white van approaches steadily as oncoming traffic while remaining clear of the ego path. A green sedan is stopped along the left side of the road near the curb, stationary and close to the travel lane. Parked motorcycles and a few cones line the edges but stay outside the roadway.", "hazard_reasoning": "There is a green sedan stopped on the left side of the road. The stopped sedan reduces available road width, requiring careful manoeuvre around it to maintain safe passage and avoid collision."}
{"id": "train_03181", "split": "train", "clip_key": "titan_clip_1361_000504_movie", "source": {"subset": "titan", "scenario": "clip_1361", "frame": "000504"}, "frames": ["titan_clip_1361_000504_movie_t-3.jpg", "titan_clip_1361_000504_movie_t-2.jpg", "titan_clip_1361_000504_movie_t-1.jpg", "titan_clip_1361_000504_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Watch for pedestrians ahead.", "environment_perception": "A narrow urban two-way street without a centerline curves slightly right; the pavement is dry and intact, and traffic is light with no oncoming vehicles visible. Ahead on the left edge, a pedestrian in a white shirt and black pants walks away from the ego vehicle along the roadway, close to the travel line and potentially constraining its pace. Two other pedestrians stand on the left sidewalk near the curb just ahead, positioned close to the lane and may step into it. On the right, a small white van is stopped for loading with a handcart of boxes beside it, narrowing the available lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and walking on the left side of the road away from the ego car. The pedestrian may step into the roadway unexpectedly, so the driver should watch for pedestrians ahead."}
{"id": "train_03182", "split": "train", "clip_key": "titan_clip_913_000228_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_913_000228_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_913_000228_movie_t-3_augB1.jpg", "titan_clip_913_000228_movie_t-2_augB1.jpg", "titan_clip_913_000228_movie_t-1_augB1.jpg", "titan_clip_913_000228_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way road and no median is shown, the pavement smooth and dry and vehicular flow light. Directly ahead, a male pedestrian in a red shirt and black pants crosses from left to right in front of the ego vehicle, occupying the lane and constraining its pace. Slightly farther ahead, two more pedestrians also cross from the left toward the right sidewalk within the ego path. Along the left curb, a white truck is stopped with people nearby, narrowing the roadway near the crossing area.", "hazard_reasoning": "There is a male pedestrian, wearing a red shirt and black pants, crossing the street, in front of the ego car, from the left to right side. The driver should slow down to allow the pedestrian to cross safely and avoid a collision."}
{"id": "train_03183", "split": "train", "clip_key": "2020-0206-142535_005949_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "005949"}, "frames": ["2020-0206-142535_005949_movie_t-3.jpg", "2020-0206-142535_005949_movie_t-2.jpg", "2020-0206-142535_005949_movie_t-1.jpg", "2020-0206-142535_005949_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "HIGH", "warning_content": "Yield to oncoming bus", "environment_perception": "A narrow urban two-way street with no median has smooth pavement and light traffic as the ego vehicle proceeds in the left lane between close buildings. Ahead to the right, a pink bus approaches in the oncoming lane but straddles the center line and enters the ego lane to pass a black van stopped at the curb, moving toward the ego car and briefly blocking the path. A small white flatbed truck is directly ahead in the ego lane continuing straight at low speed, setting the pace and reducing room for the opposing bus to reenter its lane. The black van remains stationary on the far right edge of the opposing lane, causing the bus's deviation. Cones and temporary barriers line the left curb, narrowing usable width.", "hazard_reasoning": "There is a pink bus driving over the lane marker and in the opposing lane, toward the ego car, because it is driving around a parked vehicle. The bus's movement into the opposing lane creates a risk of collision, so the driver should yield to allow safe clearance."}
{"id": "train_03184", "split": "train", "clip_key": "titan_clip_516_000192_movie", "source": {"subset": "titan", "scenario": "clip_516", "frame": "000192"}, "frames": ["titan_clip_516_000192_movie_t-3.jpg", "titan_clip_516_000192_movie_t-2.jpg", "titan_clip_516_000192_movie_t-1.jpg", "titan_clip_516_000192_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "A narrow urban one-lane street runs between mid-rise buildings with smooth dry asphalt, no divider, and very light moving traffic. A black SUV is parked along the left curb ahead, protruding into the travel lane and reducing clearance. Several pedestrians on the right sidewalk near the camera stand close to the curb while remaining off the roadway. Farther ahead, the ego lane is partially blocked on the right by a small construction setup with orange barriers, narrowing the passage.", "hazard_reasoning": "There is a white pickup truck parked in the ego lane, on the right side of the road, because of construction. Drivers should carefully manoeuvre around the obstructing vehicle to avoid collision with the truck and nearby barriers."}
{"id": "train_03185", "split": "train", "clip_key": "2020-0228-150133_034284_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "034284"}, "frames": ["2020-0228-150133_034284_movie_t-3.jpg", "2020-0228-150133_034284_movie_t-2.jpg", "2020-0228-150133_034284_movie_t-1.jpg", "2020-0228-150133_034284_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with two lanes per direction and a painted buffer median runs through mid-rise buildings; the pavement is smooth and traffic is moderate. A white hatchback directly ahead in the ego lane is stopped for a red traffic light, so the ego car queues behind it. Several cars are stationary along the left curb in the same direction, occupying the curbside lane. In the opposite direction to the right, a white van approaches and continues past in its oncoming lane, separated by road markings.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of the red traffic light. The driver should stop promptly to avoid colliding with the halted vehicle ahead."}
{"id": "train_03186", "split": "train", "clip_key": "2020-0227-104226_085143_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-104226_085143_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-104226_085143_movie_t-3_augB1.jpg", "2020-0227-104226_085143_movie_t-2_augB1.jpg", "2020-0227-104226_085143_movie_t-1_augB1.jpg", "2020-0227-104226_085143_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes is divided from oncoming traffic on the right by a striped painted median; the pavement is dry and traffic is heavy and slow in a short queue. A red SUV directly ahead in the ego lane slows because vehicles are bunched up, and it governs the ego car's pace. To the left, a red sedan slightly ahead creeps forward in the adjacent lane, remaining parallel to the SUV. On the right, an oncoming silver truck advances in its lane beyond the median and passes without conflict. Farther ahead, more vehicles, including a white box truck, are queued in the same direction.", "hazard_reasoning": "There is a red SUV slowing down in front of the ego car, because of traffic congestion ahead. Therefore, the driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_03187", "split": "train", "clip_key": "2020-0129-105040_011318_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "011318"}, "frames": ["2020-0129-105040_011318_movie_t-3.jpg", "2020-0129-105040_011318_movie_t-2.jpg", "2020-0129-105040_011318_movie_t-1.jpg", "2020-0129-105040_011318_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane junction surrounds a large circular median with fencing, and the damp pavement reflects light; traffic appears light to moderate with vehicles moving steadily around the island. A small white van ahead in the ego lane slows while curving right around the island, effectively setting the ego car's pace, consistent with the note that it is slowing down in front. To the right, a white box truck inches forward at its entry to the circle and looks ready to merge, which could place it in the ego vehicle's path. On the left, a dark car waits at the cross street by the shops.", "hazard_reasoning": "There is a white van slowing down in front of the ego-car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a potential collision due to congestion."}
{"id": "train_03188", "split": "train", "clip_key": "titan_clip_173_000486_movie", "source": {"subset": "titan", "scenario": "clip_173", "frame": "000486"}, "frames": ["titan_clip_173_000486_movie_t-3.jpg", "titan_clip_173_000486_movie_t-2.jpg", "titan_clip_173_000486_movie_t-1.jpg", "titan_clip_173_000486_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian unloading truck", "environment_perception": "An urban scene shows a narrow single-lane road with smooth pavement approaching a crosswalked intersection; traffic is light but slows due to an obstruction ahead. A large box truck is stopped in the ego lane with its rear open, occupying most of the path and constraining progress. A pedestrian wearing black pants and carrying a backpack stands in the middle of the road beside the truck while unloading it, directly within the ego lane. A white car is parked along the left curb just behind the truck, further narrowing the available space. Additional pedestrians are visible on the sidewalks near the intersection.", "hazard_reasoning": "There is a pedestrian wearing black pants, carrying a backpack and standing in the middle of the road because he is unloading a truck. The pedestrian unloading the truck may move unpredictably into the vehicle's path, so the driver should carefully manoeuvre around him."}
{"id": "train_03189", "split": "train", "clip_key": "titan_clip_1249_000300_movie", "source": {"subset": "titan", "scenario": "clip_1249", "frame": "000300"}, "frames": ["titan_clip_1249_000300_movie_t-3.jpg", "titan_clip_1249_000300_movie_t-2.jpg", "titan_clip_1249_000300_movie_t-1.jpg", "titan_clip_1249_000300_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of pedestrian crossing", "environment_perception": "An urban T-junction with a single lane each way and no median appears; the asphalt is dry and smooth, and vehicular flow is light with no moving cars near the ego vehicle. Two pedestrians with backpacks cross ahead from the left at the zebra crossing, walking away from the ego car and occupying the ego lane, which constrains the approach. On the far side and at the corner to the right, several other pedestrians stand on the sidewalk near the curb without stepping into the street. No traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a backpack and crossing the street, in a pedestrian crossing, and walking away from the ego car. The pedestrian may continue crossing unpredictably, so the driver should remain cautious to avoid a collision."}
{"id": "train_03190", "split": "train", "clip_key": "2020-0131-135401_054898_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "054898"}, "frames": ["2020-0131-135401_054898_movie_t-3.jpg", "2020-0131-135401_054898_movie_t-2.jpg", "2020-0131-135401_054898_movie_t-1.jpg", "2020-0131-135401_054898_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs under a pedestrian overpass, separated from oncoming traffic by a central divider; pavement is smooth and traffic is heavy and queued at an intersection. A silver sedan is stopped directly ahead in the ego lane because of a red traffic light, holding the ego vehicle. To the right, a white minivan in the adjacent lane creeps forward with the queue, staying roughly alongside. Ahead-left, a small white van waits in its lane behind other vehicles. On the far right, a silver car is stopped alongside near red lane-separating posts. Overhead direction boards and the red signal are visible above the stop line.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop to avoid colliding with the halted vehicle and comply with the traffic signal."}
{"id": "train_03191", "split": "train", "clip_key": "2020-0204-150838_001114_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "001114"}, "frames": ["2020-0204-150838_001114_movie_t-3.jpg", "2020-0204-150838_001114_movie_t-2.jpg", "2020-0204-150838_001114_movie_t-1.jpg", "2020-0204-150838_001114_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs between mid-rise buildings with smooth pavement and moderate, steadily moving traffic; only same-direction lanes are visible and no oncoming flow appears in the frame. Immediately ahead, a white hatchback just to the left moves over and cuts into the ego lane, prompted by a slow blue truck in its lane, and it merges in front of the ego car. Farther ahead in the left-adjacent lane, the blue refuse truck slows and bunches vehicles behind it, explaining the hatchback's maneuver. Other cars farther ahead continue straight with regular gaps and no turns. Large trucks stand along the right curb, reducing shoulder space but not blocking the through lanes.", "hazard_reasoning": "There's a white hatchback in front of the ego car, cutting in to the ego lane from the left lane, because of a truck slowing down ahead. You should slow down to maintain a safe distance and anticipate its sudden merge."}
{"id": "train_03192", "split": "train", "clip_key": "2020-0226-140503_099096_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "099096"}, "frames": ["2020-0226-140503_099096_movie_t-3.jpg", "2020-0226-140503_099096_movie_t-2.jpg", "2020-0226-140503_099096_movie_t-1.jpg", "2020-0226-140503_099096_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop for crossing pedestrian", "environment_perception": "An urban multi-lane signalized intersection with no median comes into view on wet pavement, and overall flow is moderate as the ego vehicle waits while cross traffic moves through. Ahead at the zebra crosswalk, a pedestrian wearing brown pants and a gray jacket and carrying an umbrella crosses from the right side to the left, directly across the ego lane and determining the pause. In the middle distance, a small kei flatbed travels left to right across the intersection on the cross street, continuing with the prevailing cross flow. On the near right, a white hatchback alongside the ego waits at the stop line without advancing. Overhead traffic signals are visible but the aspect is not clear in the rain.", "hazard_reasoning": "There is a pedestrian wearing brown pants, a gray jacket, and carrying an umbrella, crossing the street at the pedestrian crosswalk, from the right side of the street to the left side. The pedestrian is moving into the vehicle's path, so the driver should stop to avoid collision and yield the right-of-way."}
{"id": "train_03193", "split": "train", "clip_key": "2020-0127-132751_104404_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "104404"}, "frames": ["2020-0127-132751_104404_movie_t-3.jpg", "2020-0127-132751_104404_movie_t-2.jpg", "2020-0127-132751_104404_movie_t-1.jpg", "2020-0127-132751_104404_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "On an urban commercial street, the ego car moves in the left lane of a two-way road divided by a solid yellow center line; the pavement looks intact and traffic is light to moderate with some oncoming vehicles. A small silver van directly ahead in the ego lane slows with brake lights on, constraining the ego vehicle. A pedestrian wearing a face mask and carrying a handbag crosses from the right toward the left sidewalk immediately in front of the ego car, moving through the vehicle's path. An oncoming black car proceeds straight in the opposite lane to the right without interacting. A narrow curb and shop driveways line the left side.", "hazard_reasoning": "There's a pedestrian carrying a handbag and wearing a face mask, crossing to the left side of the road, directly in front of the ego car. The pedestrian is entering the vehicle's path at the marked crossing, so the driver must stop immediately to avoid collision."}
{"id": "train_03194", "split": "train", "clip_key": "2020-0204-103442_053755_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "053755"}, "frames": ["2020-0204-103442_053755_movie_t-3.jpg", "2020-0204-103442_053755_movie_t-2.jpg", "2020-0204-103442_053755_movie_t-1.jpg", "2020-0204-103442_053755_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down and keep a safe distance", "environment_perception": "An urban multi-lane arterial with two lanes in the ego direction runs beneath a pedestrian footbridge; the pavement is smooth and traffic is moderate to heavy with a short queue forming ahead. A black sedan directly ahead in the ego lane slows because congestion builds in front, constraining the ego car's pace. A large truck travels alongside in the adjacent right lane, moving slightly faster as it passes close to the ego vehicle. On the left sidewalk, two pedestrians walk along behind a guardrail and remain outside the roadway.", "hazard_reasoning": "There is a black sedan in front of the ego car that is slowing because of traffic congestion ahead in the ego lane. Slow down to maintain a safe following distance and avoid sudden stops in congested traffic."}
{"id": "train_03195", "split": "train", "clip_key": "titan_clip_991_000108_movie", "source": {"subset": "titan", "scenario": "clip_991", "frame": "000108"}, "frames": ["titan_clip_991_000108_movie_t-3.jpg", "titan_clip_991_000108_movie_t-2.jpg", "titan_clip_991_000108_movie_t-1.jpg", "titan_clip_991_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead.", "environment_perception": "A narrow urban two-way street with a single lane each direction and no median runs between buildings; the pavement looks smooth and traffic is light with no moving vehicles visible. On the right ahead, two pedestrians, one in a blue shirt and the other in a cardigan, walk toward the ego vehicle along the roadway edge, close to its path. On the left by storefronts, several pedestrians stand at the curb near the lane as the car approaches. Parked vehicles on the right, including a white van and a black sedan, remain stationary and constrict the available width. No oncoming traffic or traffic signals are visible.", "hazard_reasoning": "Two pedestrians wearing a blue shirt and cardigan are walking on the right side of the road, toward the ego car. The driver should be aware because these pedestrians might step into the vehicle's path unexpectedly."}
{"id": "train_03196", "split": "train", "clip_key": "titan_clip_1187_000474_movie", "source": {"subset": "titan", "scenario": "clip_1187", "frame": "000474"}, "frames": ["titan_clip_1187_000474_movie_t-3.jpg", "titan_clip_1187_000474_movie_t-2.jpg", "titan_clip_1187_000474_movie_t-1.jpg", "titan_clip_1187_000474_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian to maintain safe distance", "environment_perception": "An urban commercial street with paving stones runs straight ahead, functioning as a single narrow shared lane without a center line or median; pavement is intact and flow is light with only pedestrians. A pedestrian in a blue dress carrying a backpack walks along the right side away from the ego vehicle, keeping to the edge. Another pedestrian ahead near the center walks away in the ego path, slightly constraining the approach. A third person on the left side continues forward along the curb and does not enter the lane. Freestanding signboards and storefront steps line both sides and marginally narrow the passage, and no traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue dress, carrying a backpack, walking on the right side of the road, away from the ego car. The driver should carefully manoeuvre to maintain a safe distance and avoid startling the pedestrian."}
{"id": "train_03197", "split": "train", "clip_key": "2020-0127-132751_043599_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "043599"}, "frames": ["2020-0127-132751_043599_movie_t-3.jpg", "2020-0127-132751_043599_movie_t-2.jpg", "2020-0127-132751_043599_movie_t-1.jpg", "2020-0127-132751_043599_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban four-lane divided road with a raised median and smooth pavement shows heavy same-direction congestion while the oncoming side is light. A silver hatchback directly ahead in the ego lane is stopped, queuing at a red traffic light ahead and holding the ego car. Farther ahead in the same lane, a blue truck is also stopped, reinforcing the standstill. To the left, a white van and a turquoise truck in the adjacent lane are likewise halted beside the ego vehicle, limiting any lane change. A cyclist moves along the right sidewalk and remains outside the roadway.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to avoid colliding with the halted hatchback at the red light."}
{"id": "train_03198", "split": "train", "clip_key": "2020-0129-144857_040296_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "040296"}, "frames": ["2020-0129-144857_040296_movie_t-3.jpg", "2020-0129-144857_040296_movie_t-2.jpg", "2020-0129-144857_040296_movie_t-1.jpg", "2020-0129-144857_040296_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane same-direction road runs under an elevated structure with a right-side guardrail; the pavement is dry and traffic is heavy and mostly stopped. A black hatchback is directly ahead in the ego lane, stopped because of congestion and holding the ego vehicle. Farther ahead in the same lane, a box truck sits in the queue and constrains flow. In the adjacent left lane, a white car and a white kei van creep forward parallel to the queue without entering the ego lane. No signals are clearly visible.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle due to sudden traffic congestion."}
{"id": "train_03199", "split": "train", "clip_key": "2020-0227-104226_029249_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "029249"}, "frames": ["2020-0227-104226_029249_movie_t-3.jpg", "2020-0227-104226_029249_movie_t-2.jpg", "2020-0227-104226_029249_movie_t-1.jpg", "2020-0227-104226_029249_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with a single lane in each direction curves left toward a signalized intersection, with no median and clean pavement; overall traffic is light and steady. A white box truck drives ahead in the ego lane, moving away from the ego car and setting the pace. To the right at the cross street, a white minivan waits near the stop line as if preparing to enter after the truck passes, so it may merge into the ego lane. Several oncoming cars proceed through the intersection in their own lane and continue away without affecting the ego vehicle. Overhead traffic signals and roadside shop signs are visible at the junction.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. Maintain a safe following distance as the vehicle ahead may slow or stop unexpectedly."}
{"id": "train_03200", "split": "train", "clip_key": "2020-0131-135401_016577_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "016577"}, "frames": ["2020-0131-135401_016577_movie_t-3.jpg", "2020-0131-135401_016577_movie_t-2.jpg", "2020-0131-135401_016577_movie_t-1.jpg", "2020-0131-135401_016577_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction runs straight, separated from oncoming traffic by a concrete median on the right; the pavement is dry and overall flow is light. A black van ahead in the ego lane pulls away and continues straight under a green traffic light, opening its gap from the ego vehicle. A pedestrian walks along the left sidewalk parallel to the road without approaching the carriageway. A few parked cars line the left curb, narrowing the shoulder but remaining outside the lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03201", "split": "train", "clip_key": "2020-0221-115122_010835_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "010835"}, "frames": ["2020-0221-115122_010835_movie_t-3.jpg", "2020-0221-115122_010835_movie_t-2.jpg", "2020-0221-115122_010835_movie_t-1.jpg", "2020-0221-115122_010835_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes and a right-side guardrail; the asphalt looks smooth while traffic is heavy and largely stopped. A silver van directly ahead in the ego lane is stopped because of congestion up the road, blocking the path and setting the pace. To the left, a white hatchback just ahead creeps forward parallel to the ego lane near the lane line, keeping close and limiting room for a lane change. On the right, a white sedan alongside rolls slowly in its lane near the guardrail, further enclosing the ego vehicle within the queue. No signals or speed signs are visible.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver needs to stop to avoid colliding with the stationary van in their lane."}
{"id": "train_03202", "split": "train", "clip_key": "titan_clip_468_000540_movie", "source": {"subset": "titan", "scenario": "clip_468", "frame": "000540"}, "frames": ["titan_clip_468_000540_movie_t-3.jpg", "titan_clip_468_000540_movie_t-2.jpg", "titan_clip_468_000540_movie_t-1.jpg", "titan_clip_468_000540_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with a single narrow lane and no centerline runs between shops, with bollards bordering narrow sidewalks. The brick-paved surface is clean and dry, and traffic is light with no moving vehicles. Ahead on the right, a pedestrian in a blue shirt carrying a backpack walks away from the ego vehicle along the curb. Farther ahead near the middle of the lane, a couple of pedestrians proceed in the same direction within the roadway, likely to set the vehicle's pace. Near a storefront on the right, a person stands next to a bicycle at the curb, close to the travel path.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, carrying a backpack, walking on the right side of the road, away from the ego car. Since the pedestrian is close to the roadway edge, the driver should carefully manoeuvre around them to keep a safe distance."}
{"id": "train_03203", "split": "train", "clip_key": "titan_clip_301_000372_movie", "source": {"subset": "titan", "scenario": "clip_301", "frame": "000372"}, "frames": ["titan_clip_301_000372_movie_t-3.jpg", "titan_clip_301_000372_movie_t-2.jpg", "titan_clip_301_000372_movie_t-1.jpg", "titan_clip_301_000372_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single narrow lane each direction is dry and in good condition, and traffic is light but temporarily controlled by a work zone near a small intersection. Directly ahead, a pedestrian traffic controller wearing a cap and reflective vest and holding an orange baton stands before the ego vehicle, signaling a stop because of construction and blocking the lane. On the left edge of the ego lane, a large yellow maintenance truck with cones and a barricade is stationary, with two workers beside it, partially closing the lane. Across the intersection ahead, a teal box truck on the cross street waits under the controller's direction and may proceed before the ego car. A silver minivan is parked along the right curb, further narrowing the approach.", "hazard_reasoning": "There is a pedestrian wearing a cap, black pants, a reflective vest, and holding an orange baton, standing in front of the ego car, because he is directing traffic because of construction work. The pedestrian is directing traffic directly in front of the vehicle, so you must slow down to avoid a collision and obey their instructions."}
{"id": "train_03204", "split": "train", "clip_key": "2020-0227-104226_025726_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "025726"}, "frames": ["2020-0227-104226_025726_movie_t-3.jpg", "2020-0227-104226_025726_movie_t-2.jpg", "2020-0227-104226_025726_movie_t-1.jpg", "2020-0227-104226_025726_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, with bollards forming a median on the left and a guardrail on the right; the pavement is smooth and traffic is light. Ahead in the right lane, a blue garbage truck drives away from the ego car and continues straight, gradually opening the gap. Farther ahead near the lane center, a dark car proceeds steadily in the same direction and loosely paces the flow. An overhead electronic road sign spans the roadway, and the expressway columns cast shifting shadows across the lanes without creating obstacles.", "hazard_reasoning": "There is a blue garbage truck driving in the right lane, away from the ego car. The driver should be aware of the truck ahead as it may brake or change lanes unexpectedly."}
{"id": "train_03205", "split": "train", "clip_key": "titan_clip_672_000330_movie", "source": {"subset": "titan", "scenario": "clip_672", "frame": "000330"}, "frames": ["titan_clip_672_000330_movie_t-3.jpg", "titan_clip_672_000330_movie_t-2.jpg", "titan_clip_672_000330_movie_t-1.jpg", "titan_clip_672_000330_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be cautious of cones ahead", "environment_perception": "An urban two-way street with the ego vehicle in the left lane runs through a work zone; the pavement is smooth and traffic is light with no vehicles immediately ahead. Temporary fencing lines both sides, and a group of traffic cones on the left because of construction narrows the approach near the intersection. Two pedestrians on the right walk left across the zebra crossing directly in front of the ego lane, occupying the path and setting the pace. No oncoming traffic is visible through the junction, and the lane remains open despite the roadside construction barriers.", "hazard_reasoning": "There is a group of traffic cones on the left side of the road because of construction. These cones indicate a work zone that may narrow the roadway or require a change in path, so the driver should be cautious."}
{"id": "train_03206", "split": "train", "clip_key": "titan_clip_287_000438_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_287_000438_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_287_000438_movie_t-3_augB1.jpg", "titan_clip_287_000438_movie_t-2_augB1.jpg", "titan_clip_287_000438_movie_t-1_augB1.jpg", "titan_clip_287_000438_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban two-way street without a centerline runs between shops; the pavement looks smooth and motor traffic is light. On the right side of the lane, a pedestrian in gray pants and a white shirt walks toward the ego-vehicle within the ego lane, narrowing space ahead. Farther ahead near the center, two pedestrians continue away along the lane, constraining the vehicle's pace. At the right curb, a person with a bicycle waits beside the roadway and may enter the lane. A stopped white van on the right and the nose of a blue truck on the left further constrict the entry to the street.", "hazard_reasoning": "There is a male pedestrian wearing gray pants and a white shirt, walking on the right side of the road, towards the ego-car, in the ego lane. The pedestrian is approaching in the ego lane, requiring a careful manoeuvre to avoid collision."}
{"id": "train_03207", "split": "train", "clip_key": "2020-0127-132751_093759_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "093759"}, "frames": ["2020-0127-132751_093759_movie_t-3.jpg", "2020-0127-132751_093759_movie_t-2.jpg", "2020-0127-132751_093759_movie_t-1.jpg", "2020-0127-132751_093759_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban two-way road with a single lane each way curves gently right, bordered by a curbside sidewalk on the left and buildings on the right; the pavement is dry and there is no median, with moderate oncoming flow. Ahead in the right lane, a black bus drives toward the ego vehicle as it follows the curve, staying in its lane and passing opposite the ego path. Other oncoming traffic, including a white van and a scooter, approaches in the same right lane and continues straight, constraining the available space at the centerline. On the left sidewalk, several pedestrians walk beside a fenced construction area but remain off the roadway.", "hazard_reasoning": "There's a black bus driving toward the ego car, in the right lane. The driver should slow down to maintain a safe distance and prepare for a potential emergency stop under this oncoming-vehicle scenario."}
{"id": "train_03208", "split": "train", "clip_key": "titan_clip_690_000270_movie", "source": {"subset": "titan", "scenario": "clip_690", "frame": "000270"}, "frames": ["titan_clip_690_000270_movie_t-3.jpg", "titan_clip_690_000270_movie_t-2.jpg", "titan_clip_690_000270_movie_t-1.jpg", "titan_clip_690_000270_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the cart", "environment_perception": "An urban commercial street with a single narrow one-way lane has smooth pavement and no motor traffic, while pedestrian activity is moderate. On the left edge just ahead, a pedestrian in white shorts carrying a handbag stands near the travel lane in front of the ego-car, close to the path. Ahead to the right, a worker pulls a blue handcart along the roadway toward the center, moving across the lane and constraining the available space. At the right storefront, two people stand at the curb facing the road, narrowing the passage. A blue straight-ahead arrow sign indicates one-way travel, and bicycles and shop displays line the curbs.", "hazard_reasoning": "There is a pedestrian wearing white shorts, carrying a handbag, and standing, on the left side of the road, in front of the ego-car. Because the cart obstructs the view and the pedestrian stands directly ahead, the driver should manoeuvre around the cart to safely avoid a collision."}
{"id": "train_03209", "split": "train", "clip_key": "titan_clip_134_000666_movie", "source": {"subset": "titan", "scenario": "clip_134", "frame": "000666"}, "frames": ["titan_clip_134_000666_movie_t-3.jpg", "titan_clip_134_000666_movie_t-2.jpg", "titan_clip_134_000666_movie_t-1.jpg", "titan_clip_134_000666_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "be aware of crossing pedestrian", "environment_perception": "An urban commercial street with narrow unmarked lanes meets a cross street at a small intersection; the pavement is smooth and traffic is light. A black minivan crosses ahead from left to right through the intersection, briefly blocking the ego vehicle's path. Across the street, a pedestrian in a white shirt carrying a briefcase walks from right to left on the far crosswalk, continuing across the ego vehicle's intended path. Several other pedestrians stand on the right sidewalk near the storefront without entering the road. A no-entry sign is posted on the side street to the left.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a briefcase, and crossing a crosswalk from right to left, across the street from the ego car. The pedestrian is in the vehicle's path, so the driver should be aware of the crossing pedestrian to prevent an accident."}
{"id": "train_03210", "split": "train", "clip_key": "2020-0129-144857_021673_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "021673"}, "frames": ["2020-0129-144857_021673_movie_t-3.jpg", "2020-0129-144857_021673_movie_t-2.jpg", "2020-0129-144857_021673_movie_t-1.jpg", "2020-0129-144857_021673_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial runs under an elevated expressway with two same-direction lanes and dry, well-kept pavement; traffic is light to moderate and generally moving. A black sedan ahead in the ego lane slows, constrained because a vehicle in the adjacent lane is changing into the ego lane. A silver hatchback slightly ahead to the left drifts right to merge in front of the sedan, easing its speed as it enters the ego path. Farther ahead the overhead traffic signals show green.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because a vehicle ahead is lane changing into the ego lane. The driver should slow down to maintain a safe following distance and anticipate potential speed changes from the merging vehicle."}
{"id": "train_03211", "split": "train", "clip_key": "titan_clip_1189_000486_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1189_000486_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1189_000486_movie_t-3_augB1.jpg", "titan_clip_1189_000486_movie_t-2_augB1.jpg", "titan_clip_1189_000486_movie_t-1_augB1.jpg", "titan_clip_1189_000486_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist.", "environment_perception": "An urban narrow two-way street lined with shops and a hotel, with no median and smooth pavement, carries light traffic as the road bends slightly right. A silver van ahead in the same direction moves slowly near the center, constraining the ego car's pace. A cyclist wearing a black sleeveless shirt and black shorts with a backpack rides toward the ego car along the left side, passing beside the van and approaching the ego lane. A pedestrian on the left sidewalk walks along the storefronts and stays on the curb.", "hazard_reasoning": "A cyclist wearing a black sleeveless shirt and black shorts, carrying a backpack, and cycling on the left side of the road, toward the ego car. The driver should yield because the cyclist's path may intersect with the vehicle's lane, posing a collision risk."}
{"id": "train_03212", "split": "train", "clip_key": "2020-0214-102601_033828_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "033828"}, "frames": ["2020-0214-102601_033828_movie_t-3.jpg", "2020-0214-102601_033828_movie_t-2.jpg", "2020-0214-102601_033828_movie_t-1.jpg", "2020-0214-102601_033828_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes on smooth asphalt and heavy stop-and-go flow throughout. A white sedan directly ahead in the ego lane is stopped because congestion blocks the lane, holding the ego vehicle. In the left lane, a silver van slightly ahead creeps forward alongside at walking pace, remaining in its lane. In the right lane, a white hatchback just ahead inches forward while a queue of trucks, buses, and vans stacks up farther ahead in the right and center lanes. Bicycles are parked along the left sidewalk, and no unusual obstacles or traffic signals are prominent.", "hazard_reasoning": "There's a white sedan that has stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The stopped sedan signals reduced traffic speed, so the driver should stop to avoid a rear-end collision."}
{"id": "train_03213", "split": "train", "clip_key": "titan_clip_1303_000540_movie", "source": {"subset": "titan", "scenario": "clip_1303", "frame": "000540"}, "frames": ["titan_clip_1303_000540_movie_t-3.jpg", "titan_clip_1303_000540_movie_t-2.jpg", "titan_clip_1303_000540_movie_t-1.jpg", "titan_clip_1303_000540_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the blue truck", "environment_perception": "An urban commercial street with a single narrow lane paved in stone curves to the right, divided from the sidewalk by short bollards; traffic is light and slow. On the left, a blue flatbed truck is parked for unloading with its tailgate down and cargo visible, narrowing the usable lane. Ahead, two white delivery trucks occupy the path: one moves slowly toward the right curb while another stands at the right edge, limiting space for the ego vehicle to pass. Pedestrians on the left walk past storefronts, and a person stands at the blue truck's rear near the roadway.", "hazard_reasoning": "There is a blue truck parked on the left side of the road, because it is being unloaded. The stationary truck unloading on the roadside may obstruct your path and reduce available lane width, so you should carefully manoeuvre around it to maintain safe clearance."}
{"id": "train_03214", "split": "train", "clip_key": "2020-0203-114632_073154_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "073154"}, "frames": ["2020-0203-114632_073154_movie_t-3.jpg", "2020-0203-114632_073154_movie_t-2.jpg", "2020-0203-114632_073154_movie_t-1.jpg", "2020-0203-114632_073154_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban arterial with two lanes in the ego direction is divided from oncoming traffic by a solid orange centerline, and the pavement appears smooth with moderate flow. Barricades and cones line the left curb near a sidewalk work area, and a pedestrian footbridge spans the road. A white van directly ahead in the ego lane slows, constraining the ego car's pace. In the adjacent right lane, two large construction trucks proceed slowly in a short platoon, limiting overtaking opportunities. Farther ahead in that lane, a white box truck moves steadily behind them. Oncoming cars pass in their own lanes beyond the centerline.", "hazard_reasoning": "There is a white van slowing down in front of the ego car. The van's sudden deceleration could require the driver to brake quickly to avoid a collision, so the driver should slow down to maintain a safe following distance."}
{"id": "train_03215", "split": "train", "clip_key": "2020-0210-101957_022039_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "022039"}, "frames": ["2020-0210-101957_022039_movie_t-3.jpg", "2020-0210-101957_022039_movie_t-2.jpg", "2020-0210-101957_022039_movie_t-1.jpg", "2020-0210-101957_022039_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road in left-hand traffic curves gently left with painted channelization and smooth pavement, and traffic flows lightly to moderately. A small gray van travels directly ahead in the ego lane at a steady pace, occupying the path and setting the ego vehicle's speed. Farther ahead in the left lane, two white box trucks continue toward a signalized intersection, moving steadily without entering the ego lane. On the right, cars are present at an ENEOS gas station forecourt, with one near the exit beside a side lane that runs along the ego lane. Traffic signals are visible ahead above the junction, and fuel price signage stands at the station.", "hazard_reasoning": "There is a gray van driving in the ego lane, because of the green traffic light, in front of the ego car. The driver should follow the vehicle ahead to maintain a safe distance and ensure proper response to any signal changes."}
{"id": "train_03216", "split": "train", "clip_key": "2020-0131-135401_079742_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "079742"}, "frames": ["2020-0131-135401_079742_movie_t-3.jpg", "2020-0131-135401_079742_movie_t-2.jpg", "2020-0131-135401_079742_movie_t-1.jpg", "2020-0131-135401_079742_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction climbs gently between high-rise buildings; pavement looks smooth and traffic is moderate. A white van drives ahead in the ego lane, moving away from the ego car and slightly pulling ahead. In the adjacent left lane, a yellow hatchback runs alongside near the ego vehicle without changing lanes. Farther ahead in the left lane, a small white car continues uphill in its lane. On the opposite side of a concrete median, several vans and cars form steady oncoming traffic. Streetlights and concrete barriers line the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03217", "split": "train", "clip_key": "titan_clip_567_000168_movie", "source": {"subset": "titan", "scenario": "clip_567", "frame": "000168"}, "frames": ["titan_clip_567_000168_movie_t-3.jpg", "titan_clip_567_000168_movie_t-2.jpg", "titan_clip_567_000168_movie_t-1.jpg", "titan_clip_567_000168_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian in lane", "environment_perception": "An urban shopping street with a narrow single shared lane is paved with brick blocks, lacks a divider, and appears dry; there is no vehicular traffic while pedestrian flow is heavy. A group of pedestrians ahead occupies the lane, some strolling toward the camera and others away, constraining the ego-vehicle's progress. A pedestrian wearing a cap, white shirt, and blue pants stands on the left edge in the ego lane by the storefront queue and may step into the path. Farther ahead, a person in a red top walks mid-lane toward the right, further narrowing the passage. No traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a cap, white shirt, and blue pants, standing on the left side of the road, in the ego lane. The pedestrian occupies the vehicle's lane and may step into the path, so the driver should be aware to avoid a collision."}
{"id": "train_03218", "split": "train", "clip_key": "2020-0217-110854_034831_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "034831"}, "frames": ["2020-0217-110854_034831_movie_t-3.jpg", "2020-0217-110854_034831_movie_t-2.jpg", "2020-0217-110854_034831_movie_t-1.jpg", "2020-0217-110854_034831_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial climbs gently on smooth pavement, and traffic is heavy with queues approaching a signalized intersection. A silver car directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. Two large coaches in the lane to the right wait alongside at low speed, narrowing right-side space and matching the queue. Cars in the lanes to the left line up and creep toward the junction, keeping pace with the jam. An overhead traffic signal ahead shows red above the intersection.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, because of a red traffic light. Since the vehicle ahead is stopped at a red signal, the driver should stop to maintain a safe following distance and avoid a collision."}
{"id": "train_03219", "split": "train", "clip_key": "2020-0131-135401_075017_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "075017"}, "frames": ["2020-0131-135401_075017_movie_t-3.jpg", "2020-0131-135401_075017_movie_t-2.jpg", "2020-0131-135401_075017_movie_t-1.jpg", "2020-0131-135401_075017_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between mid-rise buildings; the pavement is dry and smooth, and traffic moves slowly in dense conditions. A black hatchback directly ahead in the ego lane slows because of congestion forming up the road, setting the ego vehicle's pace. A tall white box truck travels just ahead in the left lane at a similar slow speed, limiting leftward passing space. A large concrete mixer truck occupies the right lane slightly ahead and to the right, advancing slowly and tightening the gap on that side. Overhead blue direction signs are visible in the distance.", "hazard_reasoning": "There is a black hatchback slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. Follow the vehicle ahead at a safe distance to avoid collisions due to sudden slowdowns."}
{"id": "train_03220", "split": "train", "clip_key": "2020-0220-151845_013426_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "013426"}, "frames": ["2020-0220-151845_013426_movie_t-3.jpg", "2020-0220-151845_013426_movie_t-2.jpg", "2020-0220-151845_013426_movie_t-1.jpg", "2020-0220-151845_013426_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane road runs between large commercial buildings, with smooth pavement and a red-surfaced curbside lane on the left separated from a busy sidewalk by a guardrail. Traffic is heavy and slow, remaining in a queue. Directly ahead in the ego lane, a black van is stopped because congestion blocks the way, holding the ego car in place. In the adjacent right lane, a white box truck creeps forward beside the van, passing slowly and limiting visibility to the right. Ahead in the left lane, a silver minivan proceeds slowly with the same queue. Pedestrians walk along the left sidewalk behind the railing, and no salient traffic signals or speed signs are visible.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver must stop to avoid a rear-end collision with the halted van."}
{"id": "train_03221", "split": "train", "clip_key": "titan_clip_881_000252_movie", "source": {"subset": "titan", "scenario": "clip_881", "frame": "000252"}, "frames": ["titan_clip_881_000252_movie_t-3.jpg", "titan_clip_881_000252_movie_t-2.jpg", "titan_clip_881_000252_movie_t-1.jpg", "titan_clip_881_000252_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "A narrow urban street with shops and trees has a single travel lane, no median, smooth pavement, and light traffic. A white delivery truck is parked on the left curb close ahead, partially occupying the lane and constricting the ego vehicle's path. A person walks near the rear of this truck along the left edge and may step into the lane as the vehicle approaches. Farther ahead, a small white van in the same direction moves away at a modest pace, influencing the ego vehicle's speed. Bicycles are parked along the right curb near a side street but remain outside the lane.", "hazard_reasoning": "There is a white truck parked on left side of the road because there is no parking spot. The parked truck partially blocks the lane and reduces visibility, so the driver should carefully manoeuvre around it."}
{"id": "train_03222", "split": "train", "clip_key": "titan_clip_262_000336_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_262_000336_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_262_000336_movie_t-3_augB1.jpg", "titan_clip_262_000336_movie_t-2_augB1.jpg", "titan_clip_262_000336_movie_t-1_augB1.jpg", "titan_clip_262_000336_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of pedestrian ahead", "environment_perception": "A narrow urban two-way street with one lane each direction runs between tall buildings; the asphalt is clean and traffic is light. Orange cones line the left edge and squeeze the usable lane. On the left ahead, a pedestrian in a black suit walks toward the ego vehicle along the roadway because the bicycle lane is blocked by cones and a parked motorcycle, and he encroaches on the ego lane. Beside him at the curb, a motorcyclist stands by the parked bike next to several bicycles, remaining stationary and narrowing the passage. On the right near the storefronts, a pedestrian walks along the sidewalk and keeps off the carriageway. A triangular stop sign is visible at the intersection ahead.", "hazard_reasoning": "There is a pedestrian wearing a black suit and walking towards the ego car, on the left side of the road, because there are traffic cones and a parked motorcycle in the bicycle lane. The driver should be aware that the pedestrian may step into the lane due to the obstructed bike lane."}
{"id": "train_03223", "split": "train", "clip_key": "titan_clip_653_000132_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_653_000132_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_653_000132_movie_t-3_augB1.jpg", "titan_clip_653_000132_movie_t-2_augB1.jpg", "titan_clip_653_000132_movie_t-1_augB1.jpg", "titan_clip_653_000132_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the parked motorcycle", "environment_perception": "An urban neighborhood street ascends gently with a single narrow lane and no centerline, smooth pavement, and very light traffic with no moving vehicles visible. A black and white motorcycle is parked along the left curb ahead in the ego lane, partially narrowing the usable lane. On the right sidewalk near the camera, two pedestrians walk toward the camera beside the buildings, remaining on the sidewalk. Farther ahead on the right, another pedestrian walks uphill beside a line of bollards, staying behind the curb. No traffic signals or signs are salient.", "hazard_reasoning": "There is a black and white motorcycle parked on the left side of the road, in the ego lane. The parked motorcycle obstructs the ego lane and requires careful manoeuvring to avoid collision aligned with the suggested warning."}
{"id": "train_03224", "split": "train", "clip_key": "titan_clip_27_000282_movie", "source": {"subset": "titan", "scenario": "clip_27", "frame": "000282"}, "frames": ["titan_clip_27_000282_movie_t-3.jpg", "titan_clip_27_000282_movie_t-2.jpg", "titan_clip_27_000282_movie_t-1.jpg", "titan_clip_27_000282_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way carriageway has brick paving and no median; traffic is light but speeds are low as the road is shared with pedestrians. A small white van ahead in the same direction rolls slowly near the center of the lane, setting the pace for the ego vehicle. A pedestrian in all black is in the middle of the road ahead and crosses to the right side, occupying the travel lane and affecting the van and ego vehicle. Pedestrians line both sidewalks; one on the right walks forward with an umbrella close to the curb, while several on the left approach the roadway near storefronts.", "hazard_reasoning": "There is a pedestrian in the middle of the road, wearing all black, crossing to the right side. The driver should slow down to avoid a collision and allow the pedestrian to cross safely."}
{"id": "train_03225", "split": "train", "clip_key": "2020-0203-154554_034181_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "034181"}, "frames": ["2020-0203-154554_034181_movie_t-3.jpg", "2020-0203-154554_034181_movie_t-2.jpg", "2020-0203-154554_034181_movie_t-1.jpg", "2020-0203-154554_034181_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban road runs beneath an elevated viaduct with two same-direction lanes and no median visible. The pavement is dry and traffic is heavy and slow. A large white limousine bus directly ahead in the ego lane slows, constraining the ego car because of congestion ahead. In the right lane beside it, a line of vehicles including a small truck and a black hatchback creeps forward, keeping pace with the bus and limiting overtaking. On the left sidewalk, a pedestrian walks along the hedge, remaining outside the roadway. A fenced work area lines the right side under the viaduct.", "hazard_reasoning": "There's a white bus slowing in front of the ego car, because of traffic congestion ahead. Therefore, slow down to maintain a safe following distance and reduce the risk of collision."}
{"id": "train_03226", "split": "train", "clip_key": "2020-0131-135401_000267_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "000267"}, "frames": ["2020-0131-135401_000267_movie_t-3.jpg", "2020-0131-135401_000267_movie_t-2.jpg", "2020-0131-135401_000267_movie_t-1.jpg", "2020-0131-135401_000267_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane per direction and no median appears dry and smooth, and traffic is light as storefronts line both sides. A white box truck ahead in the ego lane drives away from the camera at a steady pace, subtly setting the ego car's following distance. A small truck approaches in the oncoming lane to the right and continues straight without encroaching. A parked scooter on the left sidewalk and a bicycle at the right curb stay clear of the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The red traffic light ahead requires reducing speed and preparing to stop; following the truck can help you respond safely to the signal."}
{"id": "train_03227", "split": "train", "clip_key": "2020-0210-155354_035874_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "035874"}, "frames": ["2020-0210-155354_035874_movie_t-3.jpg", "2020-0210-155354_035874_movie_t-2.jpg", "2020-0210-155354_035874_movie_t-1.jpg", "2020-0210-155354_035874_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three lanes in the ego direction has smooth pavement and heavy, stop-and-go flow. Immediately ahead, a black hatchback in the ego lane creeps then brakes, setting the pace. Slightly farther ahead, a black sedan is changing lanes from the ego lane to the left lane as a gap opens there, edging across in front of the ego vehicle. In the far-left lane near the curb, a white van also advances slowly alongside. Overhead blue destination signs hang above the road.", "hazard_reasoning": "There is a black sedan that is changing lanes, from the ego-lane to the left lane, because there is space in the left lane for the sedan to move over. The sedan's unexpected lane change could intersect with your path, so you should stop to avoid a collision."}
{"id": "train_03228", "split": "train", "clip_key": "2020-0203-154554_037971_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "037971"}, "frames": ["2020-0203-154554_037971_movie_t-3.jpg", "2020-0203-154554_037971_movie_t-2.jpg", "2020-0203-154554_037971_movie_t-1.jpg", "2020-0203-154554_037971_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs beneath an elevated expressway, with three same-direction lanes and a metal barrier on the right; the pavement is dry and traffic flows at a moderate pace. A white box truck drives ahead in the ego lane moving away, effectively setting the ego vehicle's speed. A small silver kei van travels slightly ahead in the left lane near the curb, continuing straight. A white minivan proceeds in the right lane alongside the truck, keeping pace without lane changes. No traffic signals are visible, and no oncoming traffic appears due to the central barrier.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03229", "split": "train", "clip_key": "titan_clip_205_000750_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_205_000750_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_205_000750_movie_t-3_augB1.jpg", "titan_clip_205_000750_movie_t-2_augB1.jpg", "titan_clip_205_000750_movie_t-1_augB1.jpg", "titan_clip_205_000750_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shopping street with a single narrow shared lane and block-paved surface, no divider or lane markings, carries light vehicle traffic but heavy pedestrian activity. A white van ahead in the ego lane proceeds slowly near the center, setting the ego vehicle's pace. Ahead in the middle of the roadway, a pedestrian wearing black pants and a gray shirt walks away from the car on a street without a clear sidewalk, remaining in the vehicle path. On the right edge, several pedestrians move along storefronts and at times drift toward the lane, so they may enter the ego path. No traffic signals or other controls are evident in this segment.", "hazard_reasoning": "There is a pedestrian wearing black pants and a gray shirt, walking in the middle of the road, away from the ego car, because there is no sidewalk. The driver should carefully manoeuvre to avoid collision with the pedestrian in the roadway."}
{"id": "train_03230", "split": "train", "clip_key": "2020-0226-101332_037084_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "037084"}, "frames": ["2020-0226-101332_037084_movie_t-3.jpg", "2020-0226-101332_037084_movie_t-2.jpg", "2020-0226-101332_037084_movie_t-1.jpg", "2020-0226-101332_037084_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three lanes in the ego direction runs past large commercial buildings, separated from the opposite carriageway by a low vegetated median on the right; the asphalt looks dry and smooth and traffic moves at a moderate pace. A white van ahead in the center of the ego lane continues straight at a steady speed, setting the pace. To the left, a white sedan and a dark sedan travel in the curbside lane at similar speed, remaining parallel to the ego path. On the opposite side of the median to the right, oncoming traffic including a bus proceeds the other way without interacting with the ego lane.", "hazard_reasoning": "No hazards are detected on the road, so the driver can maintain normal speed."}
{"id": "train_03231", "split": "train", "clip_key": "titan_clip_1242_000528_movie", "source": {"subset": "titan", "scenario": "clip_1242", "frame": "000528"}, "frames": ["titan_clip_1242_000528_movie_t-3.jpg", "titan_clip_1242_000528_movie_t-2.jpg", "titan_clip_1242_000528_movie_t-1.jpg", "titan_clip_1242_000528_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential street appears as a narrow two-way road with no median, smooth pavement, and a gentle right bend; traffic is light with no other vehicles present. On the left edge near the ego path, a pedestrian in black pants and a white shirt carrying a handbag walks toward the vehicle, close to the lane. Farther ahead near the bend, another pedestrian walks along the left side away from the camera. At the right curb in the foreground, a person stands partly in view beside a driveway and stays off the roadway. Orange cones and a tarped building line the edges, slightly narrowing the passage.", "hazard_reasoning": "There is a woman wearing black pants and a white shirt, carrying a handbag, and walking on the left side of the road, towards the ego car. The pedestrian is entering the vehicle's path, so the driver should slow down to ensure safe passage."}
{"id": "train_03232", "split": "train", "clip_key": "titan_clip_1234_000264_movie", "source": {"subset": "titan", "scenario": "clip_1234", "frame": "000264"}, "frames": ["titan_clip_1234_000264_movie_t-3.jpg", "titan_clip_1234_000264_movie_t-2.jpg", "titan_clip_1234_000264_movie_t-1.jpg", "titan_clip_1234_000264_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the stopped vehicle loading items", "environment_perception": "A narrow urban back street with a single uphill lane and no divider runs between buildings; the pavement is dry and intact, and traffic is light but constricted by loading activity. On the right beside the ego lane, a silver van is stopped with its rear hatch open while a person loads or unloads items, occupying part of the lane and slowing the approach. Ahead near the center of the lane, two pedestrians walk uphill away from the camera and remain in the vehicle's path. Farther ahead, a white delivery truck waits near the left side, further tightening the available width. No salient signals are visible.", "hazard_reasoning": "There is a silver vehicle stopped towards the right side of the ego car lane, because it is a narrow lane and the vehicle is being loaded or unloaded. This reduces available lane width and poses a collision risk, so the driver should be cautious of the stopped vehicle loading items."}
{"id": "train_03233", "split": "train", "clip_key": "titan_clip_1266_000564_movie", "source": {"subset": "titan", "scenario": "clip_1266", "frame": "000564"}, "frames": ["titan_clip_1266_000564_movie_t-3.jpg", "titan_clip_1266_000564_movie_t-2.jpg", "titan_clip_1266_000564_movie_t-1.jpg", "titan_clip_1266_000564_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A narrow urban two-way residential street with no centerline runs between close buildings as the ego vehicle proceeds on the left toward a gentle left bend; the pavement is dry and traffic is light. Ahead on the right edge, a woman wearing a black hat, a pink jacket, and white pants cycles toward the ego car as an oncoming road user, keeping near the curb and narrowing available space near the bend. A 20 speed-limit sign and a no-parking sign stand on a pole to the left. A parked bicycle rests against the right-side building, and utility poles line the street.", "hazard_reasoning": "There is a woman wearing a black hat, a pink jacket, and white pants, and cycling toward the ego car, on the right side of the road. The cyclist is approaching in the right lane and may require the driver to carefully manoeuvre around her to avoid a potential collision."}
{"id": "train_03234", "split": "train", "clip_key": "titan_clip_1207_000228_movie", "source": {"subset": "titan", "scenario": "clip_1207", "frame": "000228"}, "frames": ["titan_clip_1207_000228_movie_t-3.jpg", "titan_clip_1207_000228_movie_t-2.jpg", "titan_clip_1207_000228_movie_t-1.jpg", "titan_clip_1207_000228_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "be aware of the cyclist ahead", "environment_perception": "An urban two-lane road with a low median island ahead curves gently right; the pavement is dry and traffic is light. A cyclist wearing a black T-shirt rides away on the right edge of the roadway, moving in the same direction as the ego vehicle. Two buses are stopped at a bus stop further ahead on the right and could reenter the right lane. A pedestrian walks along the left sidewalk near the building, remaining off the carriageway. A blue directional sign points right.", "hazard_reasoning": "There is a cyclist wearing a black t-shirt, cycling on the right side of the road, away from the ego car. Be aware of the cyclist ahead in case they change direction or speed."}
{"id": "train_03235", "split": "train", "clip_key": "titan_clip_908_000354_movie", "source": {"subset": "titan", "scenario": "clip_908", "frame": "000354"}, "frames": ["titan_clip_908_000354_movie_t-3.jpg", "titan_clip_908_000354_movie_t-2.jpg", "titan_clip_908_000354_movie_t-1.jpg", "titan_clip_908_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrians", "environment_perception": "In a dense urban commercial area, the ego vehicle proceeds along a narrow two-lane road with no median and worn asphalt; vehicular traffic is light while pedestrian activity is heavy. On the left edge of the ego lane, two pedestrians in gray uniforms walk away from the vehicle because bicycles crowd the sidewalk, so they occupy part of the roadway and may constrain the pace. A pedestrian from the left curb steps into the street close to the ego path and begins crossing toward the right, potentially entering the lane. Farther ahead at an intersection, a large group of people moves across the roadway, filling the path in the distance. Several cars are parked along the left curb and rows of bicycles line the sidewalk, narrowing the usable lane.", "hazard_reasoning": "There are two pedestrians wearing gray uniforms and walking on the left side of the road away from the ego car, because there are bicycles parked on the sidewalk. Driver should be aware of pedestrians who may step into the roadway unexpectedly."}
{"id": "train_03236", "split": "train", "clip_key": "2020-0204-150838_034828_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "034828"}, "frames": ["2020-0204-150838_034828_movie_t-3.jpg", "2020-0204-150838_034828_movie_t-2.jpg", "2020-0204-150838_034828_movie_t-1.jpg", "2020-0204-150838_034828_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane boulevard with left-hand traffic, no physical median, and smooth pavement is shown with moderate flow as the ego-vehicle nears a signalized intersection. A white van directly ahead in the ego lane accelerates forward as the signal turns green, briefly setting the ego car's pace. A dark van slightly ahead to the left proceeds straight in the adjacent same-direction lane, moving alongside. In the opposite lanes, a city bus and a white sedan approach the intersection and continue through without entering the ego lane. Pedestrians wait on the sidewalks near the crosswalks. The overhead traffic light facing the ego direction is green.", "hazard_reasoning": "There is a white van that is accelerating forward in front of the ego-car, in the ego-car lane, because the traffic light has turned green. Following the vehicle ahead maintains safe distance and smooth traffic flow."}
{"id": "train_03237", "split": "train", "clip_key": "2020-0226-140503_097236_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "097236"}, "frames": ["2020-0226-140503_097236_movie_t-3.jpg", "2020-0226-140503_097236_movie_t-2.jpg", "2020-0226-140503_097236_movie_t-1.jpg", "2020-0226-140503_097236_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with a single marked lane in the ego direction runs straight between mid-rise buildings, with a fenced sidewalk on the right and cones lining the left curb; the pavement looks smooth and traffic is light. Ahead in the ego lane, a white hatchback slows and the ego car follows at its pace. On the right beyond the fence, a small box truck is stopped by the curb and has no effect on the lane. A no-parking sign is visible on the left, and the roadside cones narrow the usable space near the curb.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car, in the ego lane. You should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_03238", "split": "train", "clip_key": "2020-0220-102630_113213_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "113213"}, "frames": ["2020-0220-102630_113213_movie_t-3.jpg", "2020-0220-102630_113213_movie_t-2.jpg", "2020-0220-102630_113213_movie_t-1.jpg", "2020-0220-102630_113213_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of white sedan pulling out", "environment_perception": "An urban two-lane two-way street with a solid centerline curves gently left between mid-rise buildings; the pavement looks smooth and traffic is light. A dark car travels ahead in the ego lane at a steady pace, continuing straight and setting the vehicle's speed. To the left at a side road, a white sedan pulls out and then stops at the edge, waiting to merge and potentially entering the ego lane. On the right near the curb, a bicyclist moves forward in the same direction, keeping close to the edge but within the ego vehicle's vicinity.", "hazard_reasoning": "There is a white sedan pulling out and stopping on a side road to the left. The vehicle may merge onto the main road and obstruct traffic, so the driver should be aware of its movement."}
{"id": "train_03239", "split": "train", "clip_key": "2020-0217-110854_013877_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "013877"}, "frames": ["2020-0217-110854_013877_movie_t-3.jpg", "2020-0217-110854_013877_movie_t-2.jpg", "2020-0217-110854_013877_movie_t-1.jpg", "2020-0217-110854_013877_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth pavement runs between office buildings; the ego travels in the left lane as traffic is heavy and stop-and-go under a red signal. A silver van is stopped immediately ahead in the ego lane because of congestion, blocking progress. In the adjacent right lane, a small white van just ahead creeps forward and continues straight, not yielding space to the ego. Farther ahead in the right lane, another white van queues and moves slowly with the platoon. Overhead traffic lights show red, and roadside signs on the left indicate no parking or stopping.", "hazard_reasoning": "There is a silver van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain a safe following distance and avoid collision."}
{"id": "train_03240", "split": "train", "clip_key": "2020-0129-144857_058347_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "058347"}, "frames": ["2020-0129-144857_058347_movie_t-3.jpg", "2020-0129-144857_058347_movie_t-2.jpg", "2020-0129-144857_058347_movie_t-1.jpg", "2020-0129-144857_058347_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated roadway with noise barriers runs through high-rise buildings, carrying two same-direction lanes with a narrow right lane divided by orange flexible posts; the pavement is smooth and traffic is light. Ahead in the ego lane a white box truck drives away uphill, matching the caption, and gradually opens a gap while setting the pace. Directly in front of the ego a dark sedan in the same lane accelerates slightly while following the truck, constraining the ego's pace. No oncoming traffic, signals, or signs are visible, and there are no pedestrians or parked vehicles.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. This large vehicle partially obstructs the view ahead, so the driver should be cautious of limited visibility."}
{"id": "train_03241", "split": "train", "clip_key": "2020-0131-135401_084534_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "084534"}, "frames": ["2020-0131-135401_084534_movie_t-3.jpg", "2020-0131-135401_084534_movie_t-2.jpg", "2020-0131-135401_084534_movie_t-1.jpg", "2020-0131-135401_084534_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction on the left side of a divided roadway is separated from oncoming lanes to the right by a raised fence median; the pavement is smooth and traffic is moderate but bunching. A white van directly ahead in the ego lane is stopped because of congestion ahead, fully constraining the ego vehicle's movement. A white sedan in the adjacent left lane pulls alongside and slows, limiting room to pass the van. In the opposite direction beyond the median, a dark SUV and a truck proceed steadily with no interaction.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted van in slowed traffic."}
{"id": "train_03242", "split": "train", "clip_key": "titan_clip_535_000102_movie", "source": {"subset": "titan", "scenario": "clip_535", "frame": "000102"}, "frames": ["titan_clip_535_000102_movie_t-3.jpg", "titan_clip_535_000102_movie_t-2.jpg", "titan_clip_535_000102_movie_t-1.jpg", "titan_clip_535_000102_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "An urban neighborhood street with a single narrow two-way carriageway lacks center markings, is bordered by buildings and railings, and has smooth asphalt; traffic is light with no moving vehicles in view. On the right, stacks of traffic cones sit along the curb, slightly narrowing the edge of the roadway. A white van is parked in a recessed garage on the right, stationary and not encroaching on the lane. Far ahead the road rises gently and bends left between shops, with no pedestrians or oncoming traffic entering the ego path.", "hazard_reasoning": "There are stacks of traffic cones on the right side of the road. These cones signal potential road construction or lane obstruction, so the driver should carefully manoeuvre around them to maintain safety and avoid collision."}
{"id": "train_03243", "split": "train", "clip_key": "2020-0131-103016_044232_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "044232"}, "frames": ["2020-0131-103016_044232_movie_t-3.jpg", "2020-0131-103016_044232_movie_t-2.jpg", "2020-0131-103016_044232_movie_t-1.jpg", "2020-0131-103016_044232_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "A wide urban boulevard with multiple lanes in each direction runs between tall buildings, divided by a planted median; the pavement looks smooth and traffic is moderate, becoming denser toward the intersection ahead. A small white truck directly ahead in the ego lane slows because congestion is forming ahead, constraining the ego vehicle's pace. A dark sedan slightly ahead in the adjacent lane to the left continues straight at a similar speed, holding a parallel position that limits an immediate lane change. Farther ahead in the lane to the right, a white van travels steadily while maintaining a gap as same-direction cars fill the approach. On the opposite side of the median, oncoming traffic flows continuously but remains separated.", "hazard_reasoning": "There is a white truck slowing in the ego lane, because of traffic congestion ahead. The truck's reduced speed signals congestion, so the driver should follow the vehicle ahead to maintain a safe distance."}
{"id": "train_03244", "split": "train", "clip_key": "2020-0205-103411_064127_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "064127"}, "frames": ["2020-0205-103411_064127_movie_t-3.jpg", "2020-0205-103411_064127_movie_t-2.jpg", "2020-0205-103411_064127_movie_t-1.jpg", "2020-0205-103411_064127_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with three lanes in the ego direction and a planted median has smooth, dry pavement. Traffic is heavy and slow, queuing toward the intersection. A gray hatchback directly ahead in the ego lane is stopped because the overhead signal shows red, constraining the ego vehicle's pace. In the right lane, a dark box truck slightly ahead slows to a stop near the intersection, remaining alongside and limiting a rightward lane change. In the left lane, a silver microvan a little ahead also queues, holding position and blocking a left merge. Oncoming traffic stays separated beyond the median.", "hazard_reasoning": "There is a gray hatchback stopped in the ego lane because of a red traffic light ahead. You should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_03245", "split": "train", "clip_key": "2020-0205-103411_018589_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "018589"}, "frames": ["2020-0205-103411_018589_movie_t-3.jpg", "2020-0205-103411_018589_movie_t-2.jpg", "2020-0205-103411_018589_movie_t-1.jpg", "2020-0205-103411_018589_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban three-lane arterial runs straight toward a signalized intersection, with a metal fence median separating oncoming traffic; the pavement is smooth and traffic is light. A black van directly ahead in the ego lane is stopped at the red signal, holding the ego vehicle. Across the median to the right, an oncoming white car approaches the intersection but remains separated from the ego path. On the far-right sidewalk near the crosswalk, several pedestrians wait at the corner.", "hazard_reasoning": "There is a black van stopped in the ego lane because of a red traffic light ahead. The driver should stop immediately to avoid a collision and comply with the traffic signal."}
{"id": "train_03246", "split": "train", "clip_key": "titan_clip_576_000258_movie", "source": {"subset": "titan", "scenario": "clip_576", "frame": "000258"}, "frames": ["titan_clip_576_000258_movie_t-3.jpg", "titan_clip_576_000258_movie_t-2.jpg", "titan_clip_576_000258_movie_t-1.jpg", "titan_clip_576_000258_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully", "environment_perception": "An urban two-way street with one lane in each direction runs past shops and apartments, with smooth dry pavement and light traffic flow. A cyclist in a black shirt rides ahead along the right edge near the curb, moving in the same direction beside the storefronts and potentially edging toward the ego lane while being overtaken. A small white van travels ahead in the ego lane at a modest pace, so the ego-car follows behind it. Farther ahead, an oncoming car approaches in the opposite lane, maintaining separation. Banners and utility poles line the right sidewalk but do not obstruct the roadway.", "hazard_reasoning": "There is a cyclist wearing a black shirt and cycling, in front of the ego-car, to the right side of the road. The cyclist's proximity and potential unpredictable movements require the driver to manoeuvre carefully to maintain a safe distance."}
{"id": "train_03247", "split": "train", "clip_key": "titan_clip_1145_000564_movie", "source": {"subset": "titan", "scenario": "clip_1145", "frame": "000564"}, "frames": ["titan_clip_1145_000564_movie_t-3.jpg", "titan_clip_1145_000564_movie_t-2.jpg", "titan_clip_1145_000564_movie_t-1.jpg", "titan_clip_1145_000564_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban two-way street with no median passes between low-rise shops, the narrow asphalt looks worn and traffic is light with no moving vehicles. A pedestrian wearing black pants and a backpack walks away from the ego car along the left side of the road near the curb. Farther ahead in the same lane, another pedestrian walks away along the center of the roadway, directly in the ego path and constraining pace. On the right sidewalk near a gated entrance, a man walks toward the camera while staying off the carriageway. A bicycle is parked by the left-side convenience store with stacks of boxes beside it.", "hazard_reasoning": "There is a pedestrian wearing black pants and a backpack, walking away from the ego car on the left side of the road. The pedestrian is near the vehicle's path and could enter the lane, so the driver should manoeuvre carefully around them."}
{"id": "train_03248", "split": "train", "clip_key": "titan_clip_454_000210_movie", "source": {"subset": "titan", "scenario": "clip_454", "frame": "000210"}, "frames": ["titan_clip_454_000210_movie_t-3.jpg", "titan_clip_454_000210_movie_t-2.jpg", "titan_clip_454_000210_movie_t-1.jpg", "titan_clip_454_000210_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of the pedestrian's movement", "environment_perception": "A narrow urban two-way road runs between a stone retaining wall and a multi-story parking structure, with clean pavement and light traffic. Orange cones and a small barrier narrow the edges of the carriageway. A white van ahead in the ego lane moves slowly near the center, constraining the ego vehicle's pace. Ahead on the right edge, a pedestrian wearing a white shirt and black pants walks backward from the shoulder into the ego lane, potentially entering the ego path.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking backwards in front of the ego car, into the ego lane. The pedestrian's backward movement into the ego lane increases the risk of collision, so the driver should be aware of the pedestrian's movement."}
{"id": "train_03249", "split": "train", "clip_key": "2020-0226-140503_088458_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-140503_088458_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-140503_088458_movie_t-3_augB1.jpg", "2020-0226-140503_088458_movie_t-2_augB1.jpg", "2020-0226-140503_088458_movie_t-1_augB1.jpg", "2020-0226-140503_088458_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with one lane each direction and a solid yellow centerline runs between mid-rise buildings; the pavement is dry and traffic is heavy, especially opposite the ego vehicle. Ahead in the ego lane, a white sedan slows to a crawl because of congestion further up, so it governs the ego car's pace. To the right, a queue of oncoming vehicles, including a large white box truck and a van, remains nearly stopped near the centerline, reducing lateral clearance. A silver van stays by the left curb near the camera without entering the lane.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and be prepared for further reduced speeds."}
{"id": "train_03250", "split": "train", "clip_key": "2020-0213-143552_083729_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "083729"}, "frames": ["2020-0213-143552_083729_movie_t-3.jpg", "2020-0213-143552_083729_movie_t-2.jpg", "2020-0213-143552_083729_movie_t-1.jpg", "2020-0213-143552_083729_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes runs beneath an elevated expressway, the pavement dry and partly red-painted with straight arrows, and traffic flows lightly through a green signal. A silver hatchback directly ahead in the center lane proceeds straight from the light, gradually accelerating and setting our following distance. A blue van in the left lane travels parallel slightly ahead, continuing straight without signaling and not affecting the ego path. Farther ahead, a small white box truck in the center-right lane moves steadily under the viaduct, modestly constraining the pace of vehicles behind.", "hazard_reasoning": "As there are no visible hazards and the road is clear, the driver can maintain steady driving."}
{"id": "train_03251", "split": "train", "clip_key": "2020-0205-152530_016084_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "016084"}, "frames": ["2020-0205-152530_016084_movie_t-3.jpg", "2020-0205-152530_016084_movie_t-2.jpg", "2020-0205-152530_016084_movie_t-1.jpg", "2020-0205-152530_016084_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop and yield to the crossing pedestrian.", "environment_perception": "An urban multilane intersection with smooth pavement and a painted island marked by flexible posts lies ahead, and traffic is light as the ego vehicle faces a red signal. In the near crosswalk ahead, a pedestrian wearing black pants and a white face mask walks from right to left across the ego lane, constraining when the vehicle can move. On the right sidewalk, two cyclists travel toward the junction, remaining on the sidewalk and not entering the roadway. A dark car at the far right on the cross street is stationary near the curb and poses no immediate interaction.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white face mask, crossing the street from the right side to the left, in the crosswalk. The driver must stop to yield to the pedestrian and avoid a collision in the intersection."}
{"id": "train_03252", "split": "train", "clip_key": "2020-0205-103411_035310_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "035310"}, "frames": ["2020-0205-103411_035310_movie_t-3.jpg", "2020-0205-103411_035310_movie_t-2.jpg", "2020-0205-103411_035310_movie_t-1.jpg", "2020-0205-103411_035310_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene shows a dry two-lane road curving gently right, with buildings on the left and a guardrail and mesh fence on the right; traffic is moderate and bunching ahead. A white van directly ahead in the ego lane slows as it approaches the congestion, constraining the ego vehicle's pace. A small delivery scooter travels ahead to the left near the curb, moving slowly in the left lane and continuing straight. Farther ahead, several cars proceed through the curve and add to the queue. Taper markings beside the right barrier narrow the roadway as it bends right.", "hazard_reasoning": "There is a white van slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The van's reduced speed indicates congestion ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_03253", "split": "train", "clip_key": "2020-0205-103411_103426_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "103426"}, "frames": ["2020-0205-103411_103426_movie_t-3.jpg", "2020-0205-103411_103426_movie_t-2.jpg", "2020-0205-103411_103426_movie_t-1.jpg", "2020-0205-103411_103426_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban bridge scene shows a two-lane same-direction carriageway separated from oncoming lanes on the right by flexible posts and guardrails; the pavement is smooth and traffic is light. Ahead left, a white box truck drives in the left lane, away from the ego car, continuing straight without affecting the ego lane. Directly ahead, a small white van in the ego lane proceeds at a steady speed and sets the pace. Farther ahead, another car travels in the left lane in the same direction. On the right, sparse oncoming vehicles pass behind the divider.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03254", "split": "train", "clip_key": "titan_clip_187_000552_movie", "source": {"subset": "titan", "scenario": "clip_187", "frame": "000552"}, "frames": ["titan_clip_187_000552_movie_t-3.jpg", "titan_clip_187_000552_movie_t-2.jpg", "titan_clip_187_000552_movie_t-1.jpg", "titan_clip_187_000552_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the white van", "environment_perception": "A narrow urban street with no center divider runs between dense buildings, the pavement looks smooth and traffic is light. A white van is parked ahead along the left curb, narrowing the usable lane for the ego vehicle. A pedestrian in dark clothing is in the roadway near the van, walking rightward across the ego path and potentially entering the lane fully. A scooter rider by the right curb slightly ahead moves slowly along the edge and may merge into the lane. A pedestrian crossing sign is visible on the left, and a 30 marking is painted on the pavement.", "hazard_reasoning": "There is a white van parked on the left side of the road. This parked vehicle narrows the roadway and may obstruct the driver's view of oncoming traffic or pedestrians, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_03255", "split": "train", "clip_key": "2020-0217-110854_070283_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-110854_070283_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-110854_070283_movie_t-3_augB1.jpg", "2020-0217-110854_070283_movie_t-2_augB1.jpg", "2020-0217-110854_070283_movie_t-1_augB1.jpg", "2020-0217-110854_070283_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with multiple lanes and a painted hatch buffer has light to moderate flow on dry pavement, with the ego vehicle traveling in the left lane and oncoming traffic using the right-side lanes. A white lorry truck directly ahead in the ego lane slows because there is traffic congestion ahead, which sets the ego vehicle's pace. To the right, a white sedan slightly ahead continues straight in the adjacent same-direction lane at a steady speed. Farther ahead, several cars approach in the opposite direction beyond the buffer. Parked yellow vans line the left curb outside the travel lane.", "hazard_reasoning": "A white lorry truck is slowing down in the ego lane, because there is traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision due to the congested traffic ahead."}
{"id": "train_03256", "split": "train", "clip_key": "titan_clip_1372_000024_movie", "source": {"subset": "titan", "scenario": "clip_1372", "frame": "000024"}, "frames": ["titan_clip_1372_000024_movie_t-3.jpg", "titan_clip_1372_000024_movie_t-2.jpg", "titan_clip_1372_000024_movie_t-1.jpg", "titan_clip_1372_000024_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around cone carefully", "environment_perception": "An urban narrow street appears to run as a single lane through a work zone, with dry pavement and very light vehicle traffic. On the right near the ego lane, a pedestrian walks toward the camera along the curb and edges close to the roadway, relevant to passing clearance. Farther ahead on the right, another pedestrian continues away along the sidewalk beside the construction barriers and remains near potential entry points to the lane. A small work vehicle is stopped ahead on the right by the barricades, narrowing the available path. Multiple orange traffic cones guide the lane through the area, including an orange cone on the right side.", "hazard_reasoning": "There is an orange traffic cone on the right side. The traffic cone indicates an obstruction due to ongoing construction; the driver should manoeuvre around it to avoid a collision."}
{"id": "train_03257", "split": "train", "clip_key": "2020-0226-140503_062218_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "062218"}, "frames": ["2020-0226-140503_062218_movie_t-3.jpg", "2020-0226-140503_062218_movie_t-2.jpg", "2020-0226-140503_062218_movie_t-1.jpg", "2020-0226-140503_062218_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single lane in the ego direction and no median runs between tall buildings; the pavement looks dry and traffic is light, moving slowly. Ahead in the ego lane, a white hatchback slows and sets the pace for the ego vehicle. Slightly left of center ahead, a scooter creeps forward in the same direction and may merge back toward the lane in front of the ego car. Numerous pedestrians stand at the curbs on both sides ahead, waiting and edging near the roadway, so they could step into the path. A 20 km/h speed-limit sign is visible on the left.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, in front of the ego car. The vehicle's deceleration ahead poses a collision risk if the driver does not reduce speed promptly, so slowing down is necessary."}
{"id": "train_03258", "split": "train", "clip_key": "titan_clip_888_000516_movie", "source": {"subset": "titan", "scenario": "clip_888", "frame": "000516"}, "frames": ["titan_clip_888_000516_movie_t-3.jpg", "titan_clip_888_000516_movie_t-2.jpg", "titan_clip_888_000516_movie_t-1.jpg", "titan_clip_888_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban backstreet with a single narrow lane and no center line runs between shopfronts; the pavement is smooth and slightly cluttered at the edges, and motor traffic is light. A pedestrian in a white shirt carrying a backpack walks in the middle of the road ahead, moving away from the ego vehicle because shop displays and scaffolding on the right block the margin, so the pedestrian remains in our path and dictates a slow approach. Another pedestrian ahead to the left walks in the same direction near the storefronts and could edge into the lane. Farther ahead, a person continues along the lane, also aligned with our path. Numerous signboards encroach from the right, forming obstacles.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, and walking in the middle of the road, away from the ego-car, because of obstacles on the right side. The driver should yield because the pedestrian occupies the lane and may cross unpredictably."}
{"id": "train_03259", "split": "train", "clip_key": "2020-0228-102841_051949_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "051949"}, "frames": ["2020-0228-102841_051949_movie_t-3.jpg", "2020-0228-102841_051949_movie_t-2.jpg", "2020-0228-102841_051949_movie_t-1.jpg", "2020-0228-102841_051949_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-end collision.", "environment_perception": "An urban multi-lane arterial with a curb and guardrail on the left and red-tinted smooth pavement carries heavy, mostly stopped traffic. A silver van directly ahead in the ego lane remains stopped because of congestion, holding the ego vehicle. To the right, a large box truck in the adjacent same-direction lane is also stopped slightly ahead, narrowing space and obscuring the view forward. At the left curb near a side street, a white van sits parked and stays out of the lane. A no-parking sign and a parking sign are visible on the left sidewalk.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because of traffic congestion. The driver should stop to avoid colliding with the halted vehicle ahead."}
{"id": "train_03260", "split": "train", "clip_key": "2020-0203-114632_074543_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "074543"}, "frames": ["2020-0203-114632_074543_movie_t-3.jpg", "2020-0203-114632_074543_movie_t-2.jpg", "2020-0203-114632_074543_movie_t-1.jpg", "2020-0203-114632_074543_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes and smooth pavement carries heavy, stop-and-go traffic toward an overhead signalized intersection, with no physical median visible. A white van immediately ahead in the ego lane slows and creeps because of congestion ahead, setting the ego car's pace. To the right, a silver kei van in the adjacent lane advances slowly alongside, remaining parallel without merging. Farther ahead, a line of trucks and cars in the middle and right lanes queues tightly, creating a bottleneck that constrains overall flow.", "hazard_reasoning": "There is a white van slowing in front of the ego car in the ego lane, because of traffic congestion ahead. Driver should slow down to maintain a safe following distance and adapt to the reduced traffic speed."}
{"id": "train_03261", "split": "train", "clip_key": "2020-0225-145150_030582_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "030582"}, "frames": ["2020-0225-145150_030582_movie_t-3.jpg", "2020-0225-145150_030582_movie_t-2.jpg", "2020-0225-145150_030582_movie_t-1.jpg", "2020-0225-145150_030582_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction has smooth asphalt and a wide painted central median; the ego vehicle proceeds in the left lane amid light traffic. A blue mini-truck directly ahead in the ego lane accelerates forward, briefly setting the pace as it pulls away. A few oncoming cars travel steadily in the far lanes beyond the median and have no effect on the ego path.", "hazard_reasoning": "There's a blue truck accelerating forward in the ego-car lane. The driver should follow the vehicle ahead to maintain pace at the green signal and ensure smooth traffic flow under this clear road condition."}
{"id": "train_03262", "split": "train", "clip_key": "titan_clip_482_000354_movie", "source": {"subset": "titan", "scenario": "clip_482", "frame": "000354"}, "frames": ["titan_clip_482_000354_movie_t-3.jpg", "titan_clip_482_000354_movie_t-2.jpg", "titan_clip_482_000354_movie_t-1.jpg", "titan_clip_482_000354_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban neighborhood street with a single narrow lane and no median curves gently right, paved with stone blocks and dry; traffic is very light with no moving vehicles visible. Construction fencing and orange cones line the left edge, slightly narrowing the usable lane. Two pedestrians in white clothing on the right sidewalk near a lamp post walk toward the camera while staying on the sidewalk, so they do not affect the lane. Several cars are parked along the right curb ahead, stationary and close to the travel path, reducing clearance for the ego vehicle.", "hazard_reasoning": "No caption provided. The roadway is unobstructed and free of hazards, so no warning is necessary."}
{"id": "train_03263", "split": "train", "clip_key": "titan_clip_1117_000252_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1117_000252_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1117_000252_movie_t-3_augB1.jpg", "titan_clip_1117_000252_movie_t-2_augB1.jpg", "titan_clip_1117_000252_movie_t-1_augB1.jpg", "titan_clip_1117_000252_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban commercial street with a single undivided lane and smooth pavement is shown; motor traffic is light while pedestrian activity is steady. Bollards line the right edge and storefronts crowd both sides. A delivery box truck is stopped ahead along the left side partly in the lane, with cartons on the roadway, reducing the available width and constraining the ego vehicle's pace. A pedestrian wearing a cap stands on the left by the truck, loading a handcart as he unloads, and he edges toward the lane where he may enter the ego path. Several pedestrians walk farther ahead near the center and along the right side, moving slowly and creating a narrow corridor for passage. No salient signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a cap, loading a cart, and standing on the left side of the road, because he is unloading a truck. The pedestrian's position in the lane and potential movement into traffic create a collision risk, so the driver should carefully manoeuvre around the pedestrian to maintain safety."}
{"id": "train_03264", "split": "train", "clip_key": "titan_clip_843_000354_movie", "source": {"subset": "titan", "scenario": "clip_843", "frame": "000354"}, "frames": ["titan_clip_843_000354_movie_t-3.jpg", "titan_clip_843_000354_movie_t-2.jpg", "titan_clip_843_000354_movie_t-1.jpg", "titan_clip_843_000354_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban two-way street with one lane each way and no median has smooth asphalt and light traffic; no vehicles are moving, and a white van is stopped on the right shoulder beyond the crosswalk. Directly ahead at the zebra crossing, a pedestrian crosses toward the left in front of the ego vehicle, occupying the ego lane. Another person from the left continues rightward across the same crosswalk ahead, further holding the approach. A woman stands at the right edge of the crosswalk near the ego lane, waiting beside the path. No oncoming traffic is visible.", "hazard_reasoning": "There is a pedestrian crossing the street to the left side, in front of the ego car. Under this situation, the driver should yield to avoid collision with the crossing pedestrian."}
{"id": "train_03265", "split": "train", "clip_key": "2020-0207-101955_037835_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "037835"}, "frames": ["2020-0207-101955_037835_movie_t-3.jpg", "2020-0207-101955_037835_movie_t-2.jpg", "2020-0207-101955_037835_movie_t-1.jpg", "2020-0207-101955_037835_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Be aware of cyclist crossing ahead", "environment_perception": "A wide urban intersection beneath an elevated expressway is visible, with smooth pavement and light cross traffic. The ego vehicle is stopped at the line while the signal ahead shows red. Two pedestrians walk across the near zebra crosswalk from right to left directly in front, determining the ego vehicle's wait. A small white kei truck travels ahead across the junction from left to right and clears the area. A cyclist wearing a black shirt comes from the left side toward the crosswalk to cross to the right, approaching the ego lane and potentially entering its path.", "hazard_reasoning": "There is a cyclist wearing a black shirt coming from the left side of the intersection toward the crosswalk in order to cross to the right side. The cyclist will soon enter the vehicle's path; driver should be aware to prevent collision."}
{"id": "train_03266", "split": "train", "clip_key": "titan_clip_107_000654_movie", "source": {"subset": "titan", "scenario": "clip_107", "frame": "000654"}, "frames": ["titan_clip_107_000654_movie_t-3.jpg", "titan_clip_107_000654_movie_t-2.jpg", "titan_clip_107_000654_movie_t-1.jpg", "titan_clip_107_000654_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street with tall buildings has a single travel lane and curbside parking on both sides; the pavement looks smooth and overall traffic is light at low speed. On the right immediately ahead, a white sedan is parked, narrowing the usable lane. Along that edge, a man in a white shirt and black pants walks away from the ego vehicle beside a black minivan he is unloading, staying close to the roadway and reducing clearance. Farther ahead, a few same-direction vehicles proceed slowly down the corridor.", "hazard_reasoning": "There's a man wearing white shirt and black pants, walking on the right side of the road, away from the ego-car, because he is unloading a parked vehicle. The pedestrian could step into the lane unexpectedly while unloading, so the driver must manoeuvre around him carefully."}
{"id": "train_03267", "split": "train", "clip_key": "2020-0131-135401_074059_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "074059"}, "frames": ["2020-0131-135401_074059_movie_t-3.jpg", "2020-0131-135401_074059_movie_t-2.jpg", "2020-0131-135401_074059_movie_t-1.jpg", "2020-0131-135401_074059_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with several same-direction lanes runs between mid-rise buildings; the pavement is dry and traffic is heavy with stop-and-go flow. A black hatchback directly ahead is stopped in the ego lane because of congestion ahead, holding the ego vehicle. A large white box truck ahead-left is also stopped in its lane, adding to the queue and limiting forward visibility. A silver van to the right creeps forward alongside and edges toward the lane line, and may merge into the ego lane. An overhead blue sign provides lane guidance with straight and right-turn arrows.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, because of traffic congestion ahead. The driver must stop to avoid a collision with the halted vehicle and adapt to the slowing traffic."}
{"id": "train_03268", "split": "train", "clip_key": "titan_clip_225_000342_movie", "source": {"subset": "titan", "scenario": "clip_225", "frame": "000342"}, "frames": ["titan_clip_225_000342_movie_t-3.jpg", "titan_clip_225_000342_movie_t-2.jpg", "titan_clip_225_000342_movie_t-1.jpg", "titan_clip_225_000342_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for the crossing pedestrian.", "environment_perception": "An urban downtown intersection on a two-way street with one narrow lane each direction is visible; the asphalt is smooth with several manhole covers, and traffic is light. A pedestrian carrying an umbrella and handbag, wearing a black shirt and black pants, crosses the crosswalk in the ego lane from left to right, directly across the vehicle's path, and the ego car yields. Farther ahead in the same direction beyond the intersection, a white box truck is stopped near the center of the lane beside roadside barriers, restricting the available space to proceed. On both sidewalks, a few pedestrians wait near the curbs, including one on the right with a cart, but they stay on the sidewalk. Cones and workers line the right edge beyond the truck, suggesting a small work area, and a convex corner mirror is mounted on the right.", "hazard_reasoning": "A pedestrian, carrying an umbrella and handbag, wearing a black shirt and black pants, is crossing the street at the crosswalk in the ego lane towards the right side of the road. The driver should stop because the pedestrian is entering the vehicle's path and the parked truck reduces visibility of further road users."}
{"id": "train_03269", "split": "train", "clip_key": "titan_clip_116_000582_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_116_000582_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_116_000582_movie_t-3_augB1.jpg", "titan_clip_116_000582_movie_t-2_augB1.jpg", "titan_clip_116_000582_movie_t-1_augB1.jpg", "titan_clip_116_000582_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrians crossing ahead", "environment_perception": "A narrow urban street lined with tall buildings has a single undivided lane with smooth pavement and light traffic. Ahead, two pedestrians wearing white shirts and black pants cross from the right to the left in front of the ego car, walking across its path. Farther ahead in the same direction, a white van continues straight along the lane. Caf A-frame signs stand near the left edge of the roadway and a parked van on the near right narrows the passage; no prominent signals or posted speeds are visible.", "hazard_reasoning": "There are two pedestrians, both wearing a white shirt and black pants, crossing the street in front of the ego car, from the right side of the street to the left side. The driver should yield to avoid collision with these pedestrians crossing ahead."}
{"id": "train_03270", "split": "train", "clip_key": "2020-0228-102841_080322_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_080322_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_080322_movie_t-3_augB1.jpg", "2020-0228-102841_080322_movie_t-2_augB1.jpg", "2020-0228-102841_080322_movie_t-1_augB1.jpg", "2020-0228-102841_080322_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with three same-direction lanes and a right-side guardrail runs between tall buildings; the pavement is smooth and traffic is heavy with slow-moving queues ahead. Ahead in the ego lane, a black motorcycle slows because of the congestion and it directly constrains the ego-vehicle's pace. To the right, a red sports car in the adjacent lane is stopped near the curbside fence just ahead. On the left, a line of white trucks in the neighboring lane creeps forward toward the jam, limiting opportunities to merge.", "hazard_reasoning": "The black motorcycle is slowing in front of the ego car in the ego lane because of the traffic congestion ahead. The driver should slow down to match the reduced speed and maintain a safe following distance."}
{"id": "train_03271", "split": "train", "clip_key": "titan_clip_882_000108_movie", "source": {"subset": "titan", "scenario": "clip_882", "frame": "000108"}, "frames": ["titan_clip_882_000108_movie_t-3.jpg", "titan_clip_882_000108_movie_t-2.jpg", "titan_clip_882_000108_movie_t-1.jpg", "titan_clip_882_000108_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of cones blocking ego lane", "environment_perception": "A narrow urban side street with mid-rise buildings runs straight on dry pavement, with no marked centerline and light traffic throughout. Red traffic cones line the left edge of the ego lane indicating that vehicles are not to park in those spaces. A white box truck ahead along the left curb in the ego lane is stopped for loading, narrowing the path and constraining the ego vehicle's pace. Farther ahead, another small truck is also stopped in the same lane near the trees, further tightening the corridor. On the right, pedestrians move along the sidewalk beside a scaffolded frontage while a uniformed attendant stands at the curb, and they remain out of the roadway.", "hazard_reasoning": "There are red traffic cones on the left hand side of the street, in the ego lane, indicating that vehicles are not to park in those spaces. The cones block part of the lane, reducing the available driving path and requiring the driver to adjust position to avoid collision."}
{"id": "train_03272", "split": "train", "clip_key": "2020-0226-101332_051235_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "051235"}, "frames": ["2020-0226-101332_051235_movie_t-3.jpg", "2020-0226-101332_051235_movie_t-2.jpg", "2020-0226-101332_051235_movie_t-1.jpg", "2020-0226-101332_051235_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian on crosswalk", "environment_perception": "A dense urban multi-lane intersection with wide zebra crossings is viewed from a front-facing camera as the ego vehicle waits in the left lane at the stop line on smooth, slightly damp pavement; overall traffic is moderate with cross-street flow continuing. A pedestrian in a dark coat crosses the near crosswalk from right to left directly ahead, momentarily occupying the ego lane. Several cars, including a black sedan, proceed left to right across the junction ahead, constraining the ego. A city bus and a truck with a red container remain stopped near the left corner by the curb. Overhead traffic signals govern the intersection among tall office buildings.", "hazard_reasoning": "There is a woman wearing a white coat and crossing a crosswalk from right to left, because of the red traffic light. The driver should yield to avoid a collision with the pedestrian."}
{"id": "train_03273", "split": "train", "clip_key": "2020-0203-114632_072467_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "072467"}, "frames": ["2020-0203-114632_072467_movie_t-3.jpg", "2020-0203-114632_072467_movie_t-2.jpg", "2020-0203-114632_072467_movie_t-1.jpg", "2020-0203-114632_072467_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban dual?arriageway with two same-direction lanes curves right between a left sound wall and a median barrier; the pavement is smooth and traffic is heavy and slow. A white mini?an directly ahead in the left ego lane slows because a slow moving construction truck is just ahead in the same lane, constraining the ego's pace. The truck continues crawling along the curve and a short queue builds behind it. In the adjacent right lane, a silver van passes the queue near the median and continues ahead without merging. Farther ahead in that lane, another small van travels steadily with the slightly faster stream.", "hazard_reasoning": "There is a white van slowing down in front of the ego car because of a slow moving truck ahead in the ego lane. Drivers should slow down to maintain safe distance and avoid collision with the slower vehicle ahead."}
{"id": "train_03274", "split": "train", "clip_key": "2020-0225-145150_029433_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "029433"}, "frames": ["2020-0225-145150_029433_movie_t-3.jpg", "2020-0225-145150_029433_movie_t-2.jpg", "2020-0225-145150_029433_movie_t-1.jpg", "2020-0225-145150_029433_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multi-lane arterial runs straight between mid-rise buildings, with smooth pavement and a painted gore area on the right as traffic builds to moderate congestion ahead. A blue pickup truck directly ahead in the ego lane slows, matching the queue and constraining the ego car's pace due to traffic congestion. In the adjacent right lane a white van slightly ahead continues forward at a steady speed, potentially moving past the slower lane. Farther ahead in the ego lane a small white car proceeds in the same queue, maintaining a gap behind the truck. On the far side of the roadway, other vehicles travel independently in parallel lanes separated by the marked divider, with no pedestrians or bicyclists visible.", "hazard_reasoning": "There is a blue pickup truck slowing down in front of the ego car in the ego lane due to traffic congestion. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_03275", "split": "train", "clip_key": "2020-0207-151349_064232_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "064232"}, "frames": ["2020-0207-151349_064232_movie_t-3.jpg", "2020-0207-151349_064232_movie_t-2.jpg", "2020-0207-151349_064232_movie_t-1.jpg", "2020-0207-151349_064232_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road runs through a narrow underpass with one lane each direction divided by a solid orange centerline; the pavement looks smooth and traffic is light. A black minivan ahead in the ego lane continues straight through the underpass, moving away and modestly setting our pace. Ahead in the oncoming lane, a white medium truck approaches and passes under the bridge while holding its line. Farther ahead in the same opposing lane, a white car also approaches behind the truck. The low bridge and close concrete walls create a shaded, constricted corridor without visible signals.", "hazard_reasoning": "No hazards are detected as the roadway ahead is clear and normal driving conditions are maintained."}
{"id": "train_03276", "split": "train", "clip_key": "2020-0228-102841_078357_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "078357"}, "frames": ["2020-0228-102841_078357_movie_t-3.jpg", "2020-0228-102841_078357_movie_t-2.jpg", "2020-0228-102841_078357_movie_t-1.jpg", "2020-0228-102841_078357_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs straight between high-rise buildings on dry, well-marked pavement, with moderate traffic queuing at an intersection. A white van is stopped directly ahead in the ego lane for a red traffic light, constraining the ego vehicle. A motorcyclist slightly ahead in the lane to the right waits near the stop line, remaining in his lane. Cars in the right lanes, including a black taxi and a gray minivan, roll slowly in parallel toward the queue. Overhead signals show red and a blue sign on the right indicates straight-ahead only.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe distance and obey the red signal."}
{"id": "train_03277", "split": "train", "clip_key": "titan_clip_101_000078_movie", "source": {"subset": "titan", "scenario": "clip_101", "frame": "000078"}, "frames": ["titan_clip_101_000078_movie_t-3.jpg", "titan_clip_101_000078_movie_t-2.jpg", "titan_clip_101_000078_movie_t-1.jpg", "titan_clip_101_000078_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrian on the road", "environment_perception": "A narrow urban two-way street with one lane each direction runs between tall buildings, with a brick-like surface, no median, and light traffic moving slowly. The ego vehicle proceeds in the left lane as cones and storefronts line the curbs. A silver van ahead in the ego lane travels slowly near the left curb, constraining the ego car's pace. There is a pedestrian wearing a black shirt and cap walking along the left side toward the ego car close to the roadway edge, potentially nearing the lane. Farther ahead, an oncoming box truck advances in the right lane toward the camera but stays in its lane. Parked bicycles and scattered traffic cones along the left side reduce available shoulder space.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and cap, walking along the left side of the road, toward the ego car. This pedestrian could step into the vehicle's path unexpectedly, so the driver should be cautious."}
{"id": "train_03278", "split": "train", "clip_key": "2020-0131-103016_080274_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "080274"}, "frames": ["2020-0131-103016_080274_movie_t-3.jpg", "2020-0131-103016_080274_movie_t-2.jpg", "2020-0131-103016_080274_movie_t-1.jpg", "2020-0131-103016_080274_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the white van to avoid collision.", "environment_perception": "An urban multi-lane road with smooth pavement passes commercial buildings; traffic is heavy and mostly stopped. Directly ahead in the ego lane, a white van is stopped due to congestion and blocks the path. To the right, a large box truck in the adjacent same-direction lane stands nearly level with the van, restricting visibility and lane changes. Farther ahead, a queue of trucks and cars fills the lanes, keeping movement stalled.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of traffic congestion ahead. The van's sudden stop poses a collision risk, so the driver should stop behind it to avoid impact."}
{"id": "train_03279", "split": "train", "clip_key": "titan_clip_311_000174_movie", "source": {"subset": "titan", "scenario": "clip_311", "frame": "000174"}, "frames": ["titan_clip_311_000174_movie_t-3.jpg", "titan_clip_311_000174_movie_t-2.jpg", "titan_clip_311_000174_movie_t-1.jpg", "titan_clip_311_000174_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the gray truck", "environment_perception": "A narrow urban two-way street with no median and patched pavement carries light traffic. Ahead in the left-side ego lane, a gray truck is parked beside roadside construction marked by cones and barriers, blocking part of the lane and constraining the path. On the right, a man stands at the curb near a driveway, waiting and looking toward the roadway as if preparing to cross into the ego lane. Farther ahead, another pedestrian walks along the left sidewalk without affecting the lane. A white car is parked on the right at a driveway, and construction materials on the left further narrow the roadway.", "hazard_reasoning": "There is a gray truck parked on the left side of the road, in the ego lane, because there is construction work on the left. The parked vehicle obstructs the travel lane and may force the driver into an unexpected manoeuvre, increasing collision risk if not navigated carefully."}
{"id": "train_03280", "split": "train", "clip_key": "2020-0212-102546_044887_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "044887"}, "frames": ["2020-0212-102546_044887_movie_t-3.jpg", "2020-0212-102546_044887_movie_t-2.jpg", "2020-0212-102546_044887_movie_t-1.jpg", "2020-0212-102546_044887_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under an elevated structure with a small right-side median; the pavement is dry and traffic is heavy and stopped at a signal. A white SUV directly ahead in the ego lane remains stationary because the traffic light ahead shows red, holding the ego vehicle. Farther ahead in the same lane, a dump truck also waits at the light, further blocking the path. To the left, a silver van and a black taxi in adjacent lanes are stopped alongside, limiting options to change lanes. On the right edge, a blue service truck is standing partly in the curbside lane near the median, creating a roadside obstruction.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to maintain safe distance and avoid a rear-end collision at the red signal."}
{"id": "train_03281", "split": "train", "clip_key": "2020-0217-110854_002896_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "002896"}, "frames": ["2020-0217-110854_002896_movie_t-3.jpg", "2020-0217-110854_002896_movie_t-2.jpg", "2020-0217-110854_002896_movie_t-1.jpg", "2020-0217-110854_002896_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban commercial street has one narrow lane in each direction with no median; the wet asphalt and curbside stopping create a tight corridor, and traffic is heavy with vehicles halted in a queue. Immediately ahead in the ego lane, a red delivery scooter is stopped because congestion blocks the lane. Just beyond it, a silver sedan in the same direction waits without moving, constraining the ego car's pace. Farther ahead, a white truck in the same direction stands still at the head of the queue. A van stopped at the left curb has its rear open and slightly protrudes into the lane, while pedestrians walk along the right sidewalk beneath a pedestrian-crossing sign.", "hazard_reasoning": "There is a red scooter stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver must stop to avoid a collision with the stationary scooter and safely accommodate the traffic slowdown."}
{"id": "train_03282", "split": "train", "clip_key": "titan_clip_1342_000354_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1342_000354_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1342_000354_movie_t-3_augB1.jpg", "titan_clip_1342_000354_movie_t-2_augB1.jpg", "titan_clip_1342_000354_movie_t-1_augB1.jpg", "titan_clip_1342_000354_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one lane each way has wet pavement and light traffic; the right side is narrowed by a coned-off roadside work zone with parked construction trucks. Ahead in the ego lane, a beige box truck is stopped along the left edge and partially blocks the path, creating a pinch point. Near this truck, a man wearing a towel around his neck pushes a small wheeled cart toward the ego vehicle along the left side of the road because the parked truck is in his way, and he may edge into the ego lane. Farther ahead in the oncoming lane, a car approaches but remains separated by the roadway center.", "hazard_reasoning": "There is a man wearing a towel around his neck, pushing a wheeled cart, and walking on the left side of the road, towards the ego car, because there is a parked truck in the way. The truck forces the pedestrian into the travel lane, so the driver should manoeuvre carefully around them."}
{"id": "train_03283", "split": "train", "clip_key": "2020-0210-155354_030030_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "030030"}, "frames": ["2020-0210-155354_030030_movie_t-3.jpg", "2020-0210-155354_030030_movie_t-2.jpg", "2020-0210-155354_030030_movie_t-1.jpg", "2020-0210-155354_030030_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of parked vehicle ahead", "environment_perception": "An urban arterial with one lane in the ego direction runs on smooth asphalt, divided from oncoming multi-lane traffic by a green metal barrier; traffic flows at a moderate, steady pace. A white hatchback is parked on the left side near the curb, as noted, standing still and slightly narrowing the shoulder. Farther ahead in the ego lane, a white box truck travels away at a steady speed and defines the following distance. To the right beyond the barrier, several cars approach in the oncoming lanes and pass without interaction. An overhead pedestrian footbridge spans the road ahead.", "hazard_reasoning": "There is a white hatchback parked on the left side of the road. The parked vehicle may obstruct the lane edge and require extra space, so the driver should remain vigilant to avoid collision."}
{"id": "train_03284", "split": "train", "clip_key": "2020-0127-132751_097698_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "097698"}, "frames": ["2020-0127-132751_097698_movie_t-3.jpg", "2020-0127-132751_097698_movie_t-2.jpg", "2020-0127-132751_097698_movie_t-1.jpg", "2020-0127-132751_097698_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road has one lane per direction with a hatched buffer and small posts separating opposing flows; the pavement is dry and traffic is light. A white van ahead in the ego lane travels at a steady pace since the space in front of it is open. A distant box truck further ahead in the same direction continues straight but remains far enough not to affect the ego car. An oncoming sedan in the right-side lane moves toward the camera beyond the buffer. On the left sidewalk, two cyclists ride parallel to the road, staying on the path without entering the lane. Overhead blue direction signs are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03285", "split": "train", "clip_key": "titan_clip_778_000420_movie", "source": {"subset": "titan", "scenario": "clip_778", "frame": "000420"}, "frames": ["titan_clip_778_000420_movie_t-3.jpg", "titan_clip_778_000420_movie_t-2.jpg", "titan_clip_778_000420_movie_t-1.jpg", "titan_clip_778_000420_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian on the left side", "environment_perception": "A narrow urban two-way street with no median meets a small intersection; the pavement is smooth and traffic is light. A large 30 marking is visible on the road ahead. At the left edge close to the bumper, a cyclist rides past the camera toward the near side, briefly occupying the edge of the ego lane. Ahead at the right corner, a pedestrian crosses the street from right to left in front of the intersection and may enter the ego vehicle's path. On the left, a pedestrian in a white shirt walks away along the roadside, remaining near the curb.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the left side of the road, away from the ego car. This pedestrian could unexpectedly enter the vehicle's path, so the driver should be aware of their movement ahead."}
{"id": "train_03286", "split": "train", "clip_key": "2020-0228-150133_041394_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "041394"}, "frames": ["2020-0228-150133_041394_movie_t-3.jpg", "2020-0228-150133_041394_movie_t-2.jpg", "2020-0228-150133_041394_movie_t-1.jpg", "2020-0228-150133_041394_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement and a painted curbside buffer runs straight between mid-rise buildings, and traffic appears light to moderate with steady flow. A gray sedan ahead in the ego lane slows due to queuing vehicles farther ahead, constraining the ego vehicle's pace. In the adjacent lane to the left, a white van proceeds straight at a similar speed without changing lanes. At the curbside to the right by a gas station, a white car is stopped at the driveway and may merge into traffic. Overhead directional signs are present but no active signal is visible.", "hazard_reasoning": "There is a gray sedan slowing in ego-lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance due to the congested traffic ahead."}
{"id": "train_03287", "split": "train", "clip_key": "titan_clip_353_000564_movie", "source": {"subset": "titan", "scenario": "clip_353", "frame": "000564"}, "frames": ["titan_clip_353_000564_movie_t-3.jpg", "titan_clip_353_000564_movie_t-2.jpg", "titan_clip_353_000564_movie_t-1.jpg", "titan_clip_353_000564_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking on left side", "environment_perception": "A narrow urban side street with shops lines a two-way carriageway paved in block-pattern bricks, without a centerline or median, and traffic is light. On the left near the ego lane, a pedestrian in a gray shirt walks away along the curb, close to the roadway and influencing the vehicle's pace. Far ahead along the street, a small white car proceeds down the corridor without affecting the ego path. Another pedestrian stands on the right sidewalk by storefronts, waiting near the curb but not entering the road. A white car is parked at a left-side garage entrance that reduces clearance, and several bicycles are parked along the right curb.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, walking on the left side of the road, away from the ego car. The pedestrian could step into the lane unexpectedly, so the driver should be aware and anticipate their movements."}
{"id": "train_03288", "split": "train", "clip_key": "titan_clip_762_000366_movie", "source": {"subset": "titan", "scenario": "clip_762", "frame": "000366"}, "frames": ["titan_clip_762_000366_movie_t-3.jpg", "titan_clip_762_000366_movie_t-2.jpg", "titan_clip_762_000366_movie_t-1.jpg", "titan_clip_762_000366_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street with a single narrow mixed-traffic lane and no divider has smooth pavement and extremely slow flow dominated by pedestrians. The ego vehicle moves slowly as the corridor is shared. Several pedestrians ahead occupy the middle of the lane, walking toward and across the path and constraining pace. A pedestrian carrying a purse walks away along the right side, keeping just left of a row of orange traffic cones on the right shoulder, and may edge into the lane. A man with a child moves diagonally from the left toward the center ahead, further filling the path. Traffic cones, shop displays, and parked bicycles along the left curb narrow the roadway.", "hazard_reasoning": "There is a pedestrian carrying a purse, walking on the right side of the road away from the ego-car because of traffic cones on the right shoulder. The cones push the pedestrian toward the travel lane, so the driver must slow down to maintain safe clearance."}
{"id": "train_03289", "split": "train", "clip_key": "2020-0218-103119_009548_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "009548"}, "frames": ["2020-0218-103119_009548_movie_t-3.jpg", "2020-0218-103119_009548_movie_t-2.jpg", "2020-0218-103119_009548_movie_t-1.jpg", "2020-0218-103119_009548_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban scene shows a narrow two-way road with no median and smooth pavement, approaching a signalized intersection; traffic is light. A white box truck directly ahead in the ego lane is stopped at the line for a red traffic light, temporarily holding the ego vehicle's pace. On the left edge by a pole, a person stands with a bicycle waiting at the corner and appears poised to cross once the signal changes. On the right side near the truck's front, a cyclist rides slowly along the sidewalk toward the intersection and may enter the crossing when permitted. The traffic signal ahead is red.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of a red traffic light. You should stop to avoid a collision and obey the traffic signal."}
{"id": "train_03290", "split": "train", "clip_key": "titan_clip_662_000180_movie", "source": {"subset": "titan", "scenario": "clip_662", "frame": "000180"}, "frames": ["titan_clip_662_000180_movie_t-3.jpg", "titan_clip_662_000180_movie_t-2.jpg", "titan_clip_662_000180_movie_t-1.jpg", "titan_clip_662_000180_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "An urban narrow two-way road without lane markings runs between buildings, the pavement is smooth, and vehicle flow is light with heavy pedestrian presence. A white car ahead in the same direction rolls slowly near the center of the lane, constraining the ego vehicle's pace. On the left edge just in front of the ego car, a pedestrian wearing a white dress stands at the curb and may step into the lane. Farther ahead on the left, several pedestrians walk along the roadside in the same direction close to the carriageway, potentially encroaching on the travel path. No signals or speed signs are prominent, and there is no visible oncoming traffic.", "hazard_reasoning": "There is a pedestrian wearing a white dress and standing, on the left side of the road, in front of the ego-car. The pedestrian's position near the travel path requires the driver to manoeuvre carefully to avoid a potential collision."}
{"id": "train_03291", "split": "train", "clip_key": "titan_clip_393_000144_movie", "source": {"subset": "titan", "scenario": "clip_393", "frame": "000144"}, "frames": ["titan_clip_393_000144_movie_t-3.jpg", "titan_clip_393_000144_movie_t-2.jpg", "titan_clip_393_000144_movie_t-1.jpg", "titan_clip_393_000144_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with brick paving and no centerline runs between close buildings; traffic is light and the surface looks well kept. The flow stays slow with no oncoming vehicles visible. A black van ahead in the ego lane slows near the left side, setting the pace for the ego vehicle. Ahead at mid-distance, a pedestrian wearing a black T-shirt and shorts crosses from the left toward the right across the lane and may enter the ego path. Closer to the ego vehicle, another pedestrian steps from the left curb and continues rightward across the lane directly ahead, further constraining speed.", "hazard_reasoning": "There is a pedestrian in front of the ego car, wearing a black t-shirt and shorts, crossing to the right side of the road. The driver should slow down to let the pedestrian cross safely."}
{"id": "train_03292", "split": "train", "clip_key": "titan_clip_809_000510_movie", "source": {"subset": "titan", "scenario": "clip_809", "frame": "000510"}, "frames": ["titan_clip_809_000510_movie_t-3.jpg", "titan_clip_809_000510_movie_t-2.jpg", "titan_clip_809_000510_movie_t-1.jpg", "titan_clip_809_000510_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian waiting to cross", "environment_perception": "An urban two-way street with one lane each direction and no median stretches ahead, the pavement smooth and traffic light with a few same-direction vehicles proceeding steadily. A white minivan far ahead continues straight in the ego lane and modestly sets the pace. A large silver van stands at the left curb near the ego vehicle, narrowing the lane edge. On the right sidewalk at the crosswalk in front of the ego car, a pedestrian wearing a black dress waits to cross and may enter the ego lane.", "hazard_reasoning": "There is a pedestrian wearing a black dress and waiting to cross, at the crosswalk, on the right sidewalk in front of the ego-car. Since this pedestrian is about to enter the crosswalk from close range, the driver should yield to avoid a collision and ensure pedestrian safety."}
{"id": "train_03293", "split": "train", "clip_key": "2020-0206-101736_045117_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "045117"}, "frames": ["2020-0206-101736_045117_movie_t-3.jpg", "2020-0206-101736_045117_movie_t-2.jpg", "2020-0206-101736_045117_movie_t-1.jpg", "2020-0206-101736_045117_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs between midrise buildings, with red bollards separating a right-side lane; the pavement is dry and traffic is heavy and largely stopped beneath a pedestrian overpass. A white van directly ahead in the ego lane is stopped because of congestion extending forward, blocking the ego car's path. In the adjacent right lane beyond the bollards, a silver microvan slightly ahead creeps forward parallel to the ego vehicle, close laterally but kept apart by the divider. Ahead-left, a small truck in the neighboring lane queues slowly as well, limiting any opportunity for the ego vehicle to change lanes.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_03294", "split": "train", "clip_key": "titan_clip_1223_000240_movie", "source": {"subset": "titan", "scenario": "clip_1223", "frame": "000240"}, "frames": ["titan_clip_1223_000240_movie_t-3.jpg", "titan_clip_1223_000240_movie_t-2.jpg", "titan_clip_1223_000240_movie_t-1.jpg", "titan_clip_1223_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "A narrow urban two-way street lined with shops has one lane each way, no divider, and worn asphalt; traffic is light and slow. On the right, a group of pedestrians in white shirts walks away from the ego vehicle along the roadway edge, close to its path and may affect the lane. Ahead on the left, a silver van is stopped at the curb, protruding into the lane and reducing clearance. Farther ahead in the same direction, a white van proceeds up the street and effectively sets the pace for following traffic. An oncoming vehicle approaches in the opposite lane but remains separated. Bicycles and a delivery scooter are parked along the right curb, adding roadside obstacles.", "hazard_reasoning": "There is a group of pedestrians wearing white shirts and walking away from the ego car, on the right side of the road. The driver should carefully manoeuvre around the pedestrians to avoid a collision."}
{"id": "train_03295", "split": "train", "clip_key": "2020-0127-132751_101814_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "101814"}, "frames": ["2020-0127-132751_101814_movie_t-3.jpg", "2020-0127-132751_101814_movie_t-2.jpg", "2020-0127-132751_101814_movie_t-1.jpg", "2020-0127-132751_101814_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with a two-lane, two-way layout and a solid yellow center line has worn but serviceable pavement and light traffic. A silver van ahead in the ego lane proceeds steadily because the lane remains clear, setting the ego vehicle's pace. A few oncoming cars pass in the opposite lane farther ahead without affecting the ego path. On the right sidewalk, a person with a bicycle lingers near the curb but stays off the road. A couple of pedestrians on the left sidewalk move past storefronts without approaching the lane.", "hazard_reasoning": "There is a silver van moving forward in front of the ego car in the ego lane, because the lane is clear. Follow the vehicle ahead to maintain a safe distance and be prepared in case it slows or stops suddenly."}
{"id": "train_03296", "split": "train", "clip_key": "2020-0207-151349_083869_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "083869"}, "frames": ["2020-0207-151349_083869_movie_t-3.jpg", "2020-0207-151349_083869_movie_t-2.jpg", "2020-0207-151349_083869_movie_t-1.jpg", "2020-0207-151349_083869_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban roadway runs beneath an elevated expressway, with a single lane in the ego direction on the left separated from oncoming traffic by a metal guardrail; the pavement is smooth and traffic is light. A motorcyclist ahead in the ego lane travels steadily away near the center of the lane and briefly constrains the ego vehicle's pace. To the right, oncoming traffic including a white box truck and a passenger car moves slowly behind the guardrail and does not encroach on the ego lane. The viaduct's columns create alternating shade and partially occlude the view farther ahead.", "hazard_reasoning": "No hazards detected; conditions allow normal driving without immediate threats."}
{"id": "train_03297", "split": "train", "clip_key": "2020-0131-103016_052254_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "052254"}, "frames": ["2020-0131-103016_052254_movie_t-3.jpg", "2020-0131-103016_052254_movie_t-2.jpg", "2020-0131-103016_052254_movie_t-1.jpg", "2020-0131-103016_052254_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban scene shows a multi-lane road curving right with smooth pavement and traffic momentarily queued at a signalized junction. A white truck ahead in the ego lane is stopped because the traffic light is red, holding the ego vehicle in place. A black minivan slightly ahead to the left slows and waits in the adjacent lane at the same light, pacing the ego vehicle. On the right, a black taxi in a side lane pauses at a merge, positioned to enter ahead of the ego lane once traffic moves. The overhead signal remains red as the scene unfolds.", "hazard_reasoning": "There is a white truck stopped in the ego lane because of a red traffic light. The truck's stop at the red signal indicates the need to stop to prevent a rear-end collision and comply with traffic rules."}
{"id": "train_03298", "split": "train", "clip_key": "titan_clip_511_000462_movie", "source": {"subset": "titan", "scenario": "clip_511", "frame": "000462"}, "frames": ["titan_clip_511_000462_movie_t-3.jpg", "titan_clip_511_000462_movie_t-2.jpg", "titan_clip_511_000462_movie_t-1.jpg", "titan_clip_511_000462_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck bed", "environment_perception": "A narrow urban street with mid-rise buildings and no centerline or median has smooth asphalt and very light traffic as the car proceeds straight. Ahead on the left in the ego lane, a silver box truck is parked for unloading with its rear door open, partly blocking the lane. A worker stands at the tailgate behind the truck, handling items at the edge of the lane and constraining the ego vehicle's path. No other moving vehicles are visible, there are no salient traffic signals, and bicycles and small items line the right-hand sidewalk.", "hazard_reasoning": "There is a silver truck parked on the left side of the road, in the ego lane, because it is being unloaded. This parked truck obstructs the ego lane and limits manoeuvring space, so the driver should manoeuvre carefully around the truck bed."}
{"id": "train_03299", "split": "train", "clip_key": "2020-0226-140503_005498_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "005498"}, "frames": ["2020-0226-140503_005498_movie_t-3.jpg", "2020-0226-140503_005498_movie_t-2.jpg", "2020-0226-140503_005498_movie_t-1.jpg", "2020-0226-140503_005498_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection with wet pavement is seen, and the ego vehicle waits at a zebra crossing while cross-street traffic flows steadily. Several pedestrians traverse the crosswalk directly ahead from left to right and right to left with umbrellas, occupying the ego lane and constraining progress. A man on the right, wearing black pants and a backpack, talks on his phone and crosses from the right side to the left across the crosswalk in front of the vehicle, moving into the ego path. On the far side of the junction, a white van and a white SUV pass across from left to right through the intersection without stopping. No unusual signage stands out, and no other hazards are visible beyond the wet surface.", "hazard_reasoning": "There is a man talking on the phone, wearing black pants, carrying a backpack, and crossing the street on a crosswalk from the right side to the left side of the road. The pedestrian is distracted by his phone and entering the driving path, so the driver should stop to avoid a collision."}
{"id": "train_03300", "split": "train", "clip_key": "titan_clip_617_000468_movie", "source": {"subset": "titan", "scenario": "clip_617", "frame": "000468"}, "frames": ["titan_clip_617_000468_movie_t-3.jpg", "titan_clip_617_000468_movie_t-2.jpg", "titan_clip_617_000468_movie_t-1.jpg", "titan_clip_617_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban side street with a single lane and no median runs between shops; the dry pavement is smooth and vehicle traffic is very light while pedestrians share the roadway. On the left near the ego, a pedestrian in a black shirt and shorts walks toward the vehicle along the edge because there is no sidewalk and may encroach into the lane. At the right foreground, two pedestrians stand and drift along the curb beside parked bicycles, close to the travel path and liable to edge out. Farther ahead near the center, another person walks along the roadway, occupying part of the lane. Parked bicycles line both sides, narrowing clearance.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and shorts walking toward the ego car on the left side of the road, because there is no sidewalk. The driver should carefully manoeuvre around the pedestrian to avoid a potential collision."}
{"id": "train_03301", "split": "train", "clip_key": "2020-0228-150133_071749_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "071749"}, "frames": ["2020-0228-150133_071749_movie_t-3.jpg", "2020-0228-150133_071749_movie_t-2.jpg", "2020-0228-150133_071749_movie_t-1.jpg", "2020-0228-150133_071749_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down to avoid collision", "environment_perception": "An urban arterial with two lanes in the ego direction runs on dry, slightly worn pavement, separated from oncoming traffic by a guardrail median; flow is moderate for the ego side while the opposite side is heavy and slow. Ahead in the ego lane, a silver hatchback moves left across the lane line to the left lane in front of the ego car, completing a lane change. In the left lane slightly ahead, a dark minivan slows to accommodate the merging hatchback, momentarily shaping the ego vehicle's pace. To the right beyond the barrier, a large truck and a queue of oncoming vehicles approach, confined to their side with no interaction.", "hazard_reasoning": "There is a silver hatchback lane changing in front of the ego car, from the ego lane to the left lane. It is advisable to slow down to maintain a safe distance and avoid collision as the hatchback merges."}
{"id": "train_03302", "split": "train", "clip_key": "2020-0203-154554_065378_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "065378"}, "frames": ["2020-0203-154554_065378_movie_t-3.jpg", "2020-0203-154554_065378_movie_t-2.jpg", "2020-0203-154554_065378_movie_t-1.jpg", "2020-0203-154554_065378_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way road with mid-rise buildings and curbside railings has one lane per direction separated by a painted hatched median; the pavement appears smooth and traffic is moderate with a steady oncoming stream. Ahead in the ego lane, a silver hatchback slows, constraining the ego vehicle's pace. Slightly ahead and to the left within the same lane, a motorcyclist rides straight at a modest speed, remaining relevant to the following gap behind the hatchback. In the opposing lane to the right, a white van approaches with several cars behind it, continuing straight and staying within its lane.", "hazard_reasoning": "There is a silver hatchback slowing in the ego lane. The vehicle ahead is reducing speed unexpectedly, so you should follow the vehicle ahead to maintain a safe distance and adapt your speed under this situation."}
{"id": "train_03303", "split": "train", "clip_key": "2020-0131-103016_016623_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-103016_016623_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-103016_016623_movie_t-3_augB1.jpg", "2020-0131-103016_016623_movie_t-2_augB1.jpg", "2020-0131-103016_016623_movie_t-1_augB1.jpg", "2020-0131-103016_016623_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban multilane road with three same-direction lanes runs between midrise buildings; the pavement is good and traffic is heavy and slow. A gray van directly ahead in the ego lane is stopped, waiting for a safe gap to merge into the adjacent right lane, holding up the ego vehicle. In the right lane, a white van draws alongside and continues forward, blocking the gap the gray van seeks into the adjacent right lane. To the left, a sedan and a small truck ahead crawl in their lane, keeping the overall pace sluggish. Overhead signals are present but their aspect is unclear.", "hazard_reasoning": "There is a gray van stopped in front of the ego car because it is waiting for a safe moment to merge into the right lane. The van's sudden stop and planned merge could force you to brake abruptly, so you should stop to maintain a safe following distance."}
{"id": "train_03304", "split": "train", "clip_key": "titan_clip_1044_000588_movie", "source": {"subset": "titan", "scenario": "clip_1044", "frame": "000588"}, "frames": ["titan_clip_1044_000588_movie_t-3.jpg", "titan_clip_1044_000588_movie_t-2.jpg", "titan_clip_1044_000588_movie_t-1.jpg", "titan_clip_1044_000588_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction runs between mid-rise buildings; there is no median, the pavement looks slightly worn, and traffic is light as the ego approaches a signalized intersection showing green. A man wearing blue pants and a white T-shirt rides a bicycle toward the ego on the opposing right side near the center of the road, continuing straight and passing close to the ego's path. A pedestrian on the right sidewalk walks along the curb without stepping into the roadway. Parked vehicles line the left curb, with a white van ahead left narrowing the usable lane.", "hazard_reasoning": "A man wearing blue pants and a white T-shirt and cycling on the right side of the road, toward the ego car. The cyclist is moving towards the vehicle, requiring reduced speed to maintain a safe distance."}
{"id": "train_03305", "split": "train", "clip_key": "titan_clip_1386_000360_movie", "source": {"subset": "titan", "scenario": "clip_1386", "frame": "000360"}, "frames": ["titan_clip_1386_000360_movie_t-3.jpg", "titan_clip_1386_000360_movie_t-2.jpg", "titan_clip_1386_000360_movie_t-1.jpg", "titan_clip_1386_000360_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around parked van", "environment_perception": "A narrow urban back street with worn asphalt and no center divider runs straight ahead, and traffic is light. A black van is parked along the left curb ahead, occupying part of the travel lane and narrowing the passage. A pedestrian on the right walks toward the camera along the roadway edge, close to the ego lane and potentially entering the path while the vehicle passes the van. No moving vehicles are visible ahead or oncoming. Cones and tape with a blue bin line the right side, creating a minor roadside obstruction.", "hazard_reasoning": "There is a black van parked on the left side of the road. The parked van reduces available lane width and could obstruct passing vehicles, so you should manoeuvre carefully around it."}
{"id": "train_03306", "split": "train", "clip_key": "titan_clip_1314_000204_movie", "source": {"subset": "titan", "scenario": "clip_1314", "frame": "000204"}, "frames": ["titan_clip_1314_000204_movie_t-3.jpg", "titan_clip_1314_000204_movie_t-2.jpg", "titan_clip_1314_000204_movie_t-1.jpg", "titan_clip_1314_000204_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban scene shows the ego-vehicle on a narrow two-way street with no median and smooth pavement, and traffic is light as the road curves slightly left toward an intersection with a zebra crossing. A cyclist wearing a white T-shirt is ahead in the middle of the road, pedaling leftward across the lane toward the far-left side and away from the ego car, briefly occupying the path and constraining the approach. A red triangular stop sign is visible at the far intersection. Storefronts, bollards, and a roadside utility box line the right edge, narrowing the shoulder but leaving the lane clear.", "hazard_reasoning": "There is a cyclist wearing a white t-shirt in the middle of the road, crossing to the left side, away from the ego car. The cyclist may change direction unexpectedly and is in your path, so you should slow down to maintain control and avoid a potential collision."}
{"id": "train_03307", "split": "train", "clip_key": "2020-0226-101332_043100_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "043100"}, "frames": ["2020-0226-101332_043100_movie_t-3.jpg", "2020-0226-101332_043100_movie_t-2.jpg", "2020-0226-101332_043100_movie_t-1.jpg", "2020-0226-101332_043100_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multi-lane arterial with smooth asphalt runs under an elevated structure, separated from opposite traffic by a fence median; vehicles queue at a signalized intersection and the flow is heavy. A white van directly ahead in the ego lane is stopped with brake lights on because the traffic light ahead is red, holding the ego car. On the left adjacent lane, a black microvan waits slightly behind alongside. Farther ahead left, a line of cars including a red taxi stands tightly packed and inches forward, constraining progress. The overhead signal facing our approach shows red while green directional guide signs hang above; oncoming traffic remains behind the divider.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of red traffic light. The driver should stop immediately to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_03308", "split": "train", "clip_key": "2020-0221-115122_000769_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "000769"}, "frames": ["2020-0221-115122_000769_movie_t-3.jpg", "2020-0221-115122_000769_movie_t-2.jpg", "2020-0221-115122_000769_movie_t-1.jpg", "2020-0221-115122_000769_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial in a dense commercial district has smooth pavement and heavy, stop-and-go flow in the same direction. Directly ahead in the ego lane, a silver sedan stands still because the traffic light ahead is red, holding the queue and keeping the ego vehicle stopped. In the adjacent right lanes, several vans and cars creep forward in parallel while remaining in their lanes. Farther ahead, more vehicles bunch near the intersection beneath an overhead pedestrian bridge. Pedestrians on the left sidewalk move behind a railing, remaining clear of the roadway.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The sedan ahead is halted at a red light, so the driver must stop to maintain a safe following distance."}
{"id": "train_03309", "split": "train", "clip_key": "2020-0207-101955_014274_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "014274"}, "frames": ["2020-0207-101955_014274_movie_t-3.jpg", "2020-0207-101955_014274_movie_t-2.jpg", "2020-0207-101955_014274_movie_t-1.jpg", "2020-0207-101955_014274_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multilane arterial with two same-direction lanes and a narrow raised median on the left shows good pavement and moderate traffic queuing toward a signalized intersection. A blue hatchback directly ahead in the ego lane is stopped, held by cross-traffic moving through the intersection, and it blocks the ego car's progress. A motorcyclist travels up the left edge beside the median, filtering past the queue and potentially entering the ego lane near the junction. In the adjacent right lane, a black sedan creeps forward alongside the ego vehicle toward the intersection, constraining any lane change. Farther ahead the queue includes a tarp-covered truck, contributing to the slowdown.", "hazard_reasoning": "There is a blue hatchback stopped in front of the ego-car, in the ego lane, because of other vehicles crossing ahead at the intersection. Follow the vehicle ahead to maintain safe distance and avoid collision with the stopped hatchback."}
{"id": "train_03310", "split": "train", "clip_key": "titan_clip_1062_000534_movie", "source": {"subset": "titan", "scenario": "clip_1062", "frame": "000534"}, "frames": ["titan_clip_1062_000534_movie_t-3.jpg", "titan_clip_1062_000534_movie_t-2.jpg", "titan_clip_1062_000534_movie_t-1.jpg", "titan_clip_1062_000534_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian on left side", "environment_perception": "A narrow urban shopping street with a single shared lane and no median runs between storefronts; the pavement is good and there is no motor traffic. On the left edge ahead, a pedestrian walks away from the ego vehicle along the curb, staying near the boundary of the ego lane. Near the left foreground, another pedestrian approaches toward the camera along the edge, walking close to the ego vehicle's path. Farther ahead in the center, two pedestrians proceed slowly down the middle of the lane, occupying the path and effectively setting the pace. A blue pedestrian sign is posted on the left, and several shop boards and signs protrude into the roadway on the right.", "hazard_reasoning": "There is a pedestrian walking on the left side of the road away from the ego car. The pedestrian is on the roadway and may re-enter the vehicle path, so the driver should be aware to avoid potential conflict."}
{"id": "train_03311", "split": "train", "clip_key": "2020-0206-101736_007562_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "007562"}, "frames": ["2020-0206-101736_007562_movie_t-3.jpg", "2020-0206-101736_007562_movie_t-2.jpg", "2020-0206-101736_007562_movie_t-1.jpg", "2020-0206-101736_007562_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each way and no median runs between apartment blocks; the pavement is smooth and traffic is light. The ego vehicle proceeds in the left lane toward a zebra crosswalk at an intersection. A red sedan ahead in the ego lane slows and turns left into the side street at the intersection in front of the ego car, briefly setting the ego car's pace. An oncoming black minivan approaches in the opposite lane and continues straight past the crosswalk, staying clear of the ego lane. A pedestrian on the left sidewalk near the corner walks alongside the guardrail by the crosswalk. Overhead signal heads hang above the intersection.", "hazard_reasoning": "There is a red sedan turning into the left side of the intersection, in front of the ego car. The turning vehicle may enter the ego path unexpectedly, so the driver should slow down to avoid a collision."}
{"id": "train_03312", "split": "train", "clip_key": "2020-0204-150838_066397_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "066397"}, "frames": ["2020-0204-150838_066397_movie_t-3.jpg", "2020-0204-150838_066397_movie_t-2.jpg", "2020-0204-150838_066397_movie_t-1.jpg", "2020-0204-150838_066397_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck changing lanes.", "environment_perception": "An urban divided roadway with two same-direction lanes curves gently right, edged by a guardrail and an elevated viaduct; the pavement appears smooth and traffic is light. A gray flatbed truck ahead in the ego lane drifts left across the dashed line to merge into the adjacent left lane, briefly constraining our pace as it changes lanes. A white van slightly ahead in the left lane continues straight at a steady speed, passing the truck's position as the merge completes. No signals or speed signs are salient, and no obstacles or work zones are visible.", "hazard_reasoning": "There is a gray truck changing lanes in the ego lane, from the ego lane to the left lane. The truck's lane change could encroach on the ego-vehicle's path, so the driver should be aware."}
{"id": "train_03313", "split": "train", "clip_key": "2020-0131-103016_013099_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "013099"}, "frames": ["2020-0131-103016_013099_movie_t-3.jpg", "2020-0131-103016_013099_movie_t-2.jpg", "2020-0131-103016_013099_movie_t-1.jpg", "2020-0131-103016_013099_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Be aware of the motorcycle ahead", "environment_perception": "An urban two-way road with two same-direction lanes on the left and oncoming lanes to the right runs between tall buildings; the asphalt looks smooth with only painted separation and traffic is moderate. A black motorcycle ahead in the ego lane rides away from the ego car, continuing straight in the center of the lane and setting the immediate pace. A white box truck slightly farther ahead in the adjacent left lane proceeds straight at a similar speed while remaining in its lane. Oncoming cars in the right lanes travel toward the camera past the painted center, forming a steady opposing stream. Overhead signs indicate straight-ahead guidance and a no-parking restriction from 8 to 20.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane away from the ego car. Since the motorcycle is traveling directly ahead in the same lane, the driver should be aware of its presence to anticipate any sudden speed changes or maneuvers."}
{"id": "train_03314", "split": "train", "clip_key": "2020-0203-154554_000028_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "000028"}, "frames": ["2020-0203-154554_000028_movie_t-3.jpg", "2020-0203-154554_000028_movie_t-2.jpg", "2020-0203-154554_000028_movie_t-1.jpg", "2020-0203-154554_000028_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop promptly to avoid collision", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection, with the ego vehicle in the left lane; the pavement is dry and traffic is moderate and bunching near the junction. A black sedan directly ahead in the ego lane is stopped because of congestion ahead, holding the ego car. To the right, a red taxi in the adjacent same-direction lane creeps forward toward the intersection and may pass the ego vehicle. Farther ahead, a small van in the middle lanes moves slowly with the queue and does not encroach on the ego lane. Pedestrians line the left sidewalk near a bicycle rack, some waiting near the corner but staying off the roadway. The overhead traffic signal ahead shows red.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop promptly to avoid colliding with the halted vehicle under these congested conditions."}
{"id": "train_03315", "split": "train", "clip_key": "2020-0213-143552_024364_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "024364"}, "frames": ["2020-0213-143552_024364_movie_t-3.jpg", "2020-0213-143552_024364_movie_t-2.jpg", "2020-0213-143552_024364_movie_t-1.jpg", "2020-0213-143552_024364_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection with good pavement and wide zebra crossings comes into view, and overall traffic is moderate with steady cross-flow. A black motorcycle stopped directly ahead in the ego lane waits at the stop line because the signal facing the ego approach is red, holding the ego vehicle. Through the intersection, several vehicles including a white van and a maroon SUV proceed left to right across the ego path, maintaining the cross-traffic flow. Farther ahead to the right, a white box truck also moves across the junction in the same cross-stream. On the far-right crosswalk, a dense group of pedestrians is crossing, filling the span across the side street.", "hazard_reasoning": "There is a black Motorcycle stopped in front of the ego car, in the ego lane, because of red traffic lights ahead. You must stop at the red signal to avoid entering the intersection unsafely."}
{"id": "train_03316", "split": "train", "clip_key": "2020-0210-101957_017614_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "017614"}, "frames": ["2020-0210-101957_017614_movie_t-3.jpg", "2020-0210-101957_017614_movie_t-2.jpg", "2020-0210-101957_017614_movie_t-1.jpg", "2020-0210-101957_017614_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban single-lane left-hand roadway runs beside a raised structure with a metal barrier on the right; the asphalt is dry and smooth, and traffic is light. A white semi-truck ahead in the ego lane moves forward steadily because the road ahead is clear, effectively setting the ego vehicle's pace. Farther ahead another vehicle continues in the same direction but stays distant and is not constraining. No oncoming traffic or pedestrians are visible, and there are no apparent obstacles.", "hazard_reasoning": "There's a white semi-truck, in the ego lane, moving forward, in front of the ego-car, because the road ahead is clear. The truck may decelerate unexpectedly, so maintain sufficient following distance by following safely."}
{"id": "train_03317", "split": "train", "clip_key": "2020-0213-143552_044708_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "044708"}, "frames": ["2020-0213-143552_044708_movie_t-3.jpg", "2020-0213-143552_044708_movie_t-2.jpg", "2020-0213-143552_044708_movie_t-1.jpg", "2020-0213-143552_044708_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes each way and a low shrub median has smooth dry pavement and light, steady traffic. A white box truck ahead in the ego lane proceeds straight through the intersection under a green signal, setting the ego car's pace. A scooter ahead near the left curb travels in the same direction just beyond the crosswalk, continuing straight along the edge of the lane. On the opposite side of the median, an oncoming white SUV and another car pass to the right, clearly separated from the ego path.", "hazard_reasoning": "A white truck is driving in front of the ego car in the ego lane, because of the green traffic light. The driver should be aware of the truck ahead in case it slows or stops due to a signal change."}
{"id": "train_03318", "split": "train", "clip_key": "2020-0220-102630_020015_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "020015"}, "frames": ["2020-0220-102630_020015_movie_t-3.jpg", "2020-0220-102630_020015_movie_t-2.jpg", "2020-0220-102630_020015_movie_t-1.jpg", "2020-0220-102630_020015_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes and a low planted median runs between mid-rise buildings; the asphalt is smooth and traffic is heavy and slow. A white sedan directly ahead in the ego lane slows due to congestion ahead, constraining the ego car's pace. Farther ahead in the same lane, a tall box truck inches forward, forming a queue that sets the flow. In the right lane, a blue hatchback slightly ahead advances and brakes with the jam, staying parallel to the ego vehicle and limiting lateral movement.", "hazard_reasoning": "There is a white sedan slowing down in front of the ego car, due to traffic congestion ahead. The white sedan's reduced speed indicates traffic is slowing ahead, so you should slow down to maintain a safe distance."}
{"id": "train_03319", "split": "train", "clip_key": "titan_clip_1356_000096_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1356_000096_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1356_000096_movie_t-3_augB1.jpg", "titan_clip_1356_000096_movie_t-2_augB1.jpg", "titan_clip_1356_000096_movie_t-1_augB1.jpg", "titan_clip_1356_000096_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single undivided two-way carriageway and smooth pavement carries light traffic. The ego vehicle proceeds along the left side with bollards on the right and parked bicycles on the left narrowing the lane. Several pedestrians cross ahead near the middle of the block from right to left, briefly occupying the ego path and prompting a slow approach. A cyclist wearing a white shirt and black pants comes toward the ego along the left edge, keeping close to the curb and potentially passing alongside. Two cyclists ride ahead in the same lane away from the ego, loosely centered and constraining speed. A white van waits at a right-side junction, appearing ready to merge into the roadway.", "hazard_reasoning": "There is a cyclist wearing a white shirt and black pants, cycling along the left side of the road, toward the ego car. The cyclist is approaching the vehicle's path and the driver should slow down to maintain a safe distance and prevent a collision."}
{"id": "train_03320", "split": "train", "clip_key": "2020-0228-102841_034649_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "034649"}, "frames": ["2020-0228-102841_034649_movie_t-3.jpg", "2020-0228-102841_034649_movie_t-2.jpg", "2020-0228-102841_034649_movie_t-1.jpg", "2020-0228-102841_034649_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road with smooth pavement runs between guardrails and tree-lined sidewalks; the ego travels in the left of three same-direction lanes, and traffic is heavy, queuing toward an intersection ahead. A gray SUV is stopped directly ahead in the ego lane because congestion blocks the lane, holding the ego vehicle. In the adjacent right lane, a white minivan advances slowly past the queue, keeping parallel to the ego path. Farther ahead, a long line of cars in all lanes creeps forward under overhead gantries, determining the overall pace. A prohibitory road sign stands on the right side.", "hazard_reasoning": "There is a gray SUV stopped in the ego lane, because of traffic congestion ahead. The stationary gray SUV blocks the driving lane due to congestion, so the driver must stop immediately to avoid a rear-end collision."}
{"id": "train_03321", "split": "train", "clip_key": "2020-0204-150838_019556_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "019556"}, "frames": ["2020-0204-150838_019556_movie_t-3.jpg", "2020-0204-150838_019556_movie_t-2.jpg", "2020-0204-150838_019556_movie_t-1.jpg", "2020-0204-150838_019556_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided boulevard with two lanes in the ego direction and a wide raised median to the right has smooth pavement and moderate flow that bunches slightly mid-scene. A white van directly ahead in the ego lane slows as another vehicle changes lanes further up, constraining our pace. A second white van runs slightly ahead in the adjacent left lane, maintaining its lane and a similar speed without affecting us. Several motorcyclists farther ahead ride between lanes and filter forward, briefly entering the ego lane as gaps open. On the far side of the median, oncoming traffic moves separately and does not interact.", "hazard_reasoning": "There is a white van slowing in the ego lane because of another vehicle lane changing ahead on the road. You should slow down to maintain a safe distance and anticipate the merging vehicle."}
{"id": "train_03322", "split": "train", "clip_key": "titan_clip_262_000408_movie", "source": {"subset": "titan", "scenario": "clip_262", "frame": "000408"}, "frames": ["titan_clip_262_000408_movie_t-3.jpg", "titan_clip_262_000408_movie_t-2.jpg", "titan_clip_262_000408_movie_t-1.jpg", "titan_clip_262_000408_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with smooth asphalt and no median runs through a dense commercial area, and traffic is light as the ego car approaches a small intersection. On the left edge near a convenience store, a man in a black suit carrying a handbag walks toward the ego car along the road because there is no sidewalk, occupying part of the lane and approaching the path. Beside him, a helmeted person stands by a parked motorcycle behind orange cones at the curb, close to the travel lane. Far ahead near the intersection, a small white van moves slowly across on the cross street without entering the ego lane. A red triangular stop sign is posted for this approach, and the parked bikes and cones narrow the left margin.", "hazard_reasoning": "There is a man carrying a handbag, wearing a black suit, walking on the left side of the road towards the ego car, because there is no sidewalk. The pedestrian is at risk of entering the vehicle's path, so the driver should slow down to maintain safety."}
{"id": "train_03323", "split": "train", "clip_key": "2020-0129-144857_068868_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "068868"}, "frames": ["2020-0129-144857_068868_movie_t-3.jpg", "2020-0129-144857_068868_movie_t-2.jpg", "2020-0129-144857_068868_movie_t-1.jpg", "2020-0129-144857_068868_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes runs past shops and a gas station; the pavement is dry and a metal guardrail median on the right separates opposite traffic as overall flow is heavy and stop-and-go. A white sedan directly ahead in the ego lane is stopped because congestion extends forward, holding the ego vehicle. In the adjacent left lane, a dark coupe creeps forward beside the ego car and may merge into the ego lane. Farther ahead in the left lanes, several large trucks queue and move slowly, further constraining pace. Overhead gantry signs indicate straight-through travel for all three lanes.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of traffic congestion ahead. The white sedan's sudden stop due to congestion requires the driver to stop promptly to maintain a safe following distance and avoid a collision."}
{"id": "train_03324", "split": "train", "clip_key": "2020-0203-114632_090489_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "090489"}, "frames": ["2020-0203-114632_090489_movie_t-3.jpg", "2020-0203-114632_090489_movie_t-2.jpg", "2020-0203-114632_090489_movie_t-1.jpg", "2020-0203-114632_090489_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial under an elevated structure has three same-direction lanes with smooth pavement and moderate traffic slowing toward an intersection. A white hatchback directly ahead in the ego lane is stopped at a red traffic light, so the ego car queues behind it. To the left, a blue refuse truck in the adjacent lane creeps forward alongside while staying in its lane, narrowing lateral space. On the right, a large box truck travels slowly parallel toward the signal in its lane without encroaching.", "hazard_reasoning": "There is a white hatchback that has stopped in front of the ego car in the ego lane, because of a red traffic light. The driver should stop to avoid a rear-end collision with the halted vehicle ahead under the red light."}
{"id": "train_03325", "split": "train", "clip_key": "2020-0131-135401_000953_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "000953"}, "frames": ["2020-0131-135401_000953_movie_t-3.jpg", "2020-0131-135401_000953_movie_t-2.jpg", "2020-0131-135401_000953_movie_t-1.jpg", "2020-0131-135401_000953_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with one lane per direction and a solid yellow centerline runs between buildings; the pavement is clean and traffic is light. A gray box truck is stopped directly ahead in the ego lane, blocking the path and constraining the ego vehicle's movement. On the left edge just beyond the truck, two pedestrians walk away along the curbside strip, remaining out of the lane but close to the truck's front. The opposing lane ahead appears clear, and there are no visible traffic signals or posted speed signs.", "hazard_reasoning": "There is a gray truck stopped in the ego-car lane. A stopped truck ahead can cause sudden braking to avoid collision, so the driver should stop."}
{"id": "train_03326", "split": "train", "clip_key": "2020-0217-144444_017846_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "017846"}, "frames": ["2020-0217-144444_017846_movie_t-3.jpg", "2020-0217-144444_017846_movie_t-2.jpg", "2020-0217-144444_017846_movie_t-1.jpg", "2020-0217-144444_017846_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane road under an elevated expressway approaches a signalized intersection with wide zebra crossings; the asphalt is smooth and traffic is moderate. A silver van directly ahead in the ego lane slows toward the stop line, setting the pace. To the right, a white hatchback slightly ahead continues straight and then accelerates away, remaining in its lane. In the left lane, a small van runs alongside at similar speed, keeping position next to the ego vehicle. On the left sidewalk near the crosswalk, a pedestrian walks toward the corner and waits by the curb. Overhead direction signs indicate straight movement for the lanes.", "hazard_reasoning": "There are no identifiable hazards in this scenario, and road conditions remain safe and clear, allowing the driver to continue without adjustments."}
{"id": "train_03327", "split": "train", "clip_key": "titan_clip_559_000408_movie", "source": {"subset": "titan", "scenario": "clip_559", "frame": "000408"}, "frames": ["titan_clip_559_000408_movie_t-3.jpg", "titan_clip_559_000408_movie_t-2.jpg", "titan_clip_559_000408_movie_t-1.jpg", "titan_clip_559_000408_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "A narrow urban side street with a single shared lane and no centerline is lined with shops; the pavement is smooth and traffic is light at walking pace. A pedestrian ahead near the center-left walks away in the lane, constraining the ego vehicle's pace. On the left edge, a pedestrian wearing a cap pushes a green trolley toward the ego vehicle because the sidewalk is blocked by storefront signs, and may edge into the lane. Far ahead, a cyclist approaches along the street in line with the center, moving steadily toward the ego vehicle. To the right, a person stands at a convenience store doorway close to the curb, near the travel path. Parked bicycles, signboards, and a food stall narrow the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a cap, pushing a green trolley on the left side of the road, towards the ego car, because the sidewalk is blocked. The driver should carefully manoeuvre around the pedestrian to prevent collision while maintaining safe distance."}
{"id": "train_03328", "split": "train", "clip_key": "2020-0225-102455_001761_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "001761"}, "frames": ["2020-0225-102455_001761_movie_t-3.jpg", "2020-0225-102455_001761_movie_t-2.jpg", "2020-0225-102455_001761_movie_t-1.jpg", "2020-0225-102455_001761_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban two-way arterial with two same-direction lanes and oncoming lanes separated by a painted median and hatched buffer, smooth pavement, and moderate traffic flow. A white van directly ahead in the ego lane slows, constraining the ego car's pace. In the adjacent right lane, a dark SUV farther ahead continues at a steady speed and pulls away. In the opposite lanes to the right, a white sedan approaches as oncoming traffic but stays separated by the median. No signals or unusual obstacles are clearly visible.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car. The white van's reduced speed could require sudden deceleration to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_03329", "split": "train", "clip_key": "titan_clip_869_000102_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_869_000102_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_869_000102_movie_t-3_augB1.jpg", "titan_clip_869_000102_movie_t-2_augB1.jpg", "titan_clip_869_000102_movie_t-1_augB1.jpg", "titan_clip_869_000102_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban commercial street with shops lines a narrow single-lane road without a median, the pavement is smooth, and vehicle flow is light amid heavy foot traffic. Ahead, a pedestrian with a backpack steps from the right-side storefront and walks diagonally toward the ego car, potentially entering its path. On the left, a small group of pedestrians stands near a restaurant and edges toward the roadway, reducing clearance. Close to the camera, a white van is stopped along the left curb and slightly protrudes into the lane, further narrowing space. Orange safety cones and a convenience-store entrance occupy the right edge, with no traffic signals visible.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking toward the ego car, on the left side of the road. The pedestrian's path brings them into the vehicle's lane, so the driver should manoeuvre carefully to avoid a collision."}
{"id": "train_03330", "split": "train", "clip_key": "2020-0225-102455_086802_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "086802"}, "frames": ["2020-0225-102455_086802_movie_t-3.jpg", "2020-0225-102455_086802_movie_t-2.jpg", "2020-0225-102455_086802_movie_t-1.jpg", "2020-0225-102455_086802_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down and maintain distance", "environment_perception": "An urban arterial with two same-direction lanes and painted dividers has smooth pavement and slow, congested traffic. Ahead in the ego lane, a white hatchback slows because of traffic congestion ahead, constraining the ego car's pace. To the right, a white box truck runs alongside in the adjacent lane at low speed, limiting any lane change. Farther ahead in the same direction, a bus and a dump truck queue and creep forward, contributing to the backup. Pedestrians walk along the left sidewalk beside storefronts but do not approach the roadway.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down and maintain a safe distance to adapt to the reduced speed and prevent a collision."}
{"id": "train_03331", "split": "train", "clip_key": "titan_clip_109_000666_movie", "source": {"subset": "titan", "scenario": "clip_109", "frame": "000666"}, "frames": ["titan_clip_109_000666_movie_t-3.jpg", "titan_clip_109_000666_movie_t-2.jpg", "titan_clip_109_000666_movie_t-1.jpg", "titan_clip_109_000666_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single travel lane and no median shows smooth pavement and light traffic that slows near a pull-over, with parked vehicles lining both sides and tightening the lane. Ahead on the right, a black SUV is stopped partly in the lane by the curb, constraining the ego vehicle's pace. Beside it, a pedestrian wearing a black coat and black pants stands on the right edge of the roadway close to the lane and may step out. Farther along the right sidewalk, a man in a white shirt walks away from the camera without approaching the road. No salient signals or speed signs are visible, and the main constraint is the narrowed passage around the stopped car.", "hazard_reasoning": "A pedestrian, wearing a black coat and black pants, is standing on the right side of the road. The driver should slow down because the pedestrian may step into the roadway unexpectedly at the red light."}
{"id": "train_03332", "split": "train", "clip_key": "titan_clip_256_000684_movie", "source": {"subset": "titan", "scenario": "clip_256", "frame": "000684"}, "frames": ["titan_clip_256_000684_movie_t-3.jpg", "titan_clip_256_000684_movie_t-2.jpg", "titan_clip_256_000684_movie_t-1.jpg", "titan_clip_256_000684_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for pedestrian ahead", "environment_perception": "A narrow urban side street with curbs and no centerline runs through low-rise shops and offices; the pavement is clean with utility covers, and traffic is light. Ahead in the ego lane, a box truck is stopped with its rear doors open while workers unload equipment, partly occupying the lane and constraining the ego vehicle's path. A tall pedestrian wearing a white shirt walks ahead on the left side of the road away from the ego car, keeping close to the curb but moving within the roadway and possibly edging into the ego lane. Another worker near the truck walks around the rear while pushing a dolly toward the center of the lane, briefly blocking the path, and cones sit near the truck as an additional obstacle.", "hazard_reasoning": "There is a tall pedestrian wearing a white shirt, walking on the left side of the road, away from the ego car. The pedestrian could step into the lane unexpectedly, so slowing down allows more time to react safely."}
{"id": "train_03333", "split": "train", "clip_key": "titan_clip_837_000438_movie", "source": {"subset": "titan", "scenario": "clip_837", "frame": "000438"}, "frames": ["titan_clip_837_000438_movie_t-3.jpg", "titan_clip_837_000438_movie_t-2.jpg", "titan_clip_837_000438_movie_t-1.jpg", "titan_clip_837_000438_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with tiled pavement forms a narrow shared roadway without marked lanes or a median, and traffic is light and slow. Ahead in the same path, a small box truck continues away near the center of the street, setting the pace. On the right side near the ego car, a pedestrian wearing a black shirt and carrying a red box walks toward the vehicle in the roadway because the sidewalk is blocked, potentially entering the ego path. On the left front, another pedestrian steps off the curb and moves diagonally toward the center, crossing ahead. Parked motorcycles and a traffic cone line the right edge, slightly narrowing space, and a blue pedestrian crossing sign plus a no-parking sign are visible.", "hazard_reasoning": "There is a male pedestrian wearing a black shirt and carrying a red box, walking on the right side of the street, towards the ego-car, because the sidewalk is blocked. Carefully manoeuvre around him because the blocked sidewalk forces him onto the roadway and he may step unpredictably into your path."}
{"id": "train_03334", "split": "train", "clip_key": "2020-0127-132751_028177_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "028177"}, "frames": ["2020-0127-132751_028177_movie_t-3.jpg", "2020-0127-132751_028177_movie_t-2.jpg", "2020-0127-132751_028177_movie_t-1.jpg", "2020-0127-132751_028177_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In a dense urban area, the ego vehicle travels on a multi-lane arterial with two same-direction lanes on the left, separated from oncoming traffic by a raised median; the pavement is dry and well marked, and traffic flows at a moderate pace. A white hatchback directly ahead in the ego lane continues steadily and sets the ego vehicle's pace. Farther ahead, a white box truck in the same lane moves away toward the next intersection. To the right beyond the median, a large tanker truck and several cars approach in the oncoming lanes without affecting the ego path. Overhead gantry signs indicate the left lane is for a left turn while the adjacent lanes go straight.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03335", "split": "train", "clip_key": "2020-0206-142535_024877_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "024877"}, "frames": ["2020-0206-142535_024877_movie_t-3.jpg", "2020-0206-142535_024877_movie_t-2.jpg", "2020-0206-142535_024877_movie_t-1.jpg", "2020-0206-142535_024877_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs beneath an overpass, with three same-direction lanes and short posts separating oncoming traffic to the right; the pavement is dry and traffic is heavy and slow near a signalized intersection. A black mid-size SUV directly ahead in the ego lane slows to a crawl because of congestion, constraining the ego vehicle's pace. A large dump truck sits slightly ahead in the lane to the left, creeping forward in parallel and keeping tight gaps. A white kei van in the adjacent right lane inches ahead alongside while remaining in its lane amid the queue. A roadside sign on the right prohibits U-turns with a time restriction of 8-20.", "hazard_reasoning": "There is a black mid-SUV slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The slowing vehicle signals queued traffic, so the driver should reduce speed to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_03336", "split": "train", "clip_key": "titan_clip_684_000414_movie", "source": {"subset": "titan", "scenario": "clip_684", "frame": "000414"}, "frames": ["titan_clip_684_000414_movie_t-3.jpg", "titan_clip_684_000414_movie_t-2.jpg", "titan_clip_684_000414_movie_t-1.jpg", "titan_clip_684_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street appears, a narrow two-way road with no center divider and smooth pavement; vehicular traffic is very light and pedestrians occupy the carriageway. A group of pedestrians ahead in the ego lane walk along and cross casually, directly in the vehicle's path and setting its pace. A pedestrian wearing a pink shirt and white skirt stands on the right edge of the road where there is no sidewalk, close to the travel lane and reducing passing clearance. Another pedestrian near the center crosses from right to left a short distance ahead. Parked bicycles and shop signboards line the right curb, encroaching into the edge of the lane.", "hazard_reasoning": "There is a pedestrian wearing a pink shirt and white skirt, standing on the right side of the road, because there is no sidewalk. The driver should slow down to maintain a safe distance and prevent a collision."}
{"id": "train_03337", "split": "train", "clip_key": "titan_clip_502_000438_movie", "source": {"subset": "titan", "scenario": "clip_502", "frame": "000438"}, "frames": ["titan_clip_502_000438_movie_t-3.jpg", "titan_clip_502_000438_movie_t-2.jpg", "titan_clip_502_000438_movie_t-1.jpg", "titan_clip_502_000438_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with a single narrow lane and block-paved surface runs between buildings; there is no centerline and traffic is light and slow. A man wearing black trousers, a white shirt, and black shoes, carrying a handbag, walks along the right side of the ego lane toward the camera, close enough that he may step into the vehicle's path. A white minivan is parked on the right edge partly protruding into the lane, narrowing the corridor. Far ahead, a small box truck in the same lane moves slowly away, setting the pace.", "hazard_reasoning": "There is a man wearing a pair of black trousers, a white shirt, and black shoes, carrying a handbag, walking on the right side of the ego lane. The pedestrian is walking close to the vehicle's path and could step into the lane unexpectedly, so the driver should carefully manoeuvre around him."}
{"id": "train_03338", "split": "train", "clip_key": "titan_clip_702_000144_movie", "source": {"subset": "titan", "scenario": "clip_702", "frame": "000144"}, "frames": ["titan_clip_702_000144_movie_t-3.jpg", "titan_clip_702_000144_movie_t-2.jpg", "titan_clip_702_000144_movie_t-1.jpg", "titan_clip_702_000144_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with a single mixed-traffic lane and smooth asphalt shows light activity. Directly ahead, a man in a white shirt and green pants carrying a shoulder bag walks away in the middle of the ego lane in front of the car, constraining its pace. Farther ahead, a small blue cart continues away in the same lane and remains in the path of travel. On the right, another pedestrian with a backpack walks along the curb in the same direction near the lane edge. A loaded flatbed truck is parked on the left, protruding slightly into the lane and narrowing the passage, while shop signs and parked bicycles line the right side and reduce lateral clearance.", "hazard_reasoning": "There is a man wearing a white shirt and green pants, carrying a shoulder bag, and walking in front of the ego car, away from the ego car. The pedestrian is entering the vehicle's path in limited visibility due to the parked truck, so the driver should slow down to avoid a collision."}
{"id": "train_03339", "split": "train", "clip_key": "2020-0221-115122_016466_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "016466"}, "frames": ["2020-0221-115122_016466_movie_t-3.jpg", "2020-0221-115122_016466_movie_t-2.jpg", "2020-0221-115122_016466_movie_t-1.jpg", "2020-0221-115122_016466_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban three-lane road runs under an elevated structure, the pavement is in good condition, and traffic is heavy with stop-and-go movement. A white van directly ahead in the ego lane is stopped because congestion blocks the way, holding the ego vehicle. To the left, a small flatbed truck in the adjacent lane crawls forward past us, limiting a left merge. To the right, a dark car travels parallel in the neighboring lane at low speed, also constraining any lane change.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and prevent a collision with the halted van."}
{"id": "train_03340", "split": "train", "clip_key": "titan_clip_785_000492_movie", "source": {"subset": "titan", "scenario": "clip_785", "frame": "000492"}, "frames": ["titan_clip_785_000492_movie_t-3.jpg", "titan_clip_785_000492_movie_t-2.jpg", "titan_clip_785_000492_movie_t-1.jpg", "titan_clip_785_000492_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian on roadside", "environment_perception": "In an urban underpass, the ego-vehicle proceeds along a narrow single-lane road with concrete walls and slightly worn pavement, curving gently left; traffic is light with no other vehicles visible. On the right edge near the wall, a pedestrian wearing blue pants and a blue shirt sits on the curb inside the tunnel, stationary very close to the travel lane and adjacent to the ego path. Ahead near the brighter exit, a slim post stands near the lane center, narrowing the passage. No traffic signals or readable signs are visible, and there are no parked vehicles or oncoming traffic in view.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a blue shirt, sitting down on the right side of the road. Drivers should be cautious because the seated pedestrian close to the roadway might unexpectedly move into the path."}
{"id": "train_03341", "split": "train", "clip_key": "titan_clip_1290_000294_movie", "source": {"subset": "titan", "scenario": "clip_1290", "frame": "000294"}, "frames": ["titan_clip_1290_000294_movie_t-3.jpg", "titan_clip_1290_000294_movie_t-2.jpg", "titan_clip_1290_000294_movie_t-1.jpg", "titan_clip_1290_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with two lanes in the ego direction runs straight past mid-rise buildings, with a landscaped median on the right; the pavement is dry and smooth and traffic is light. A white box truck ahead in the ego lane travels steadily and sets the pace. Farther ahead in the right lane, a small white car continues away without interacting. On the left edge ahead, a pedestrian wearing black pants walks away from the ego car along the roadway because a parked vehicle occupies the curb area, keeping close to the left side. Trees line both sides of the street.", "hazard_reasoning": "There is a pedestrian wearing black pants and walking on the left side of the road, away from the ego-car, because of the parked vehicle. The pedestrian may step into the lane unexpectedly due to the blocked sidewalk, so the driver should slow down to maintain control and avoid a collision."}
{"id": "train_03342", "split": "train", "clip_key": "titan_clip_801_000288_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_801_000288_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_801_000288_movie_t-3_augB1.jpg", "titan_clip_801_000288_movie_t-2_augB1.jpg", "titan_clip_801_000288_movie_t-1_augB1.jpg", "titan_clip_801_000288_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban commercial street with a single two-way carriageway, no median, and smooth pavement shows light traffic. A pedestrian in a white shirt and gray pants is in the middle of the road ahead, crossing from the right to the left where there is no crosswalk, briefly occupying the ego lane. Farther ahead in the same lane, another person walks away along the center of the roadway, constraining the pace. A gray car stands at the left edge near the camera, protruding slightly into the lane and narrowing the passage. Shop signboards and parked bicycles line the right side and jut toward the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and gray pants, in the middle of the road, crossing the street, from the right side of the street to the left side, because there is no pedestrian crosswalk. The driver should manoeuvre carefully around this pedestrian to avoid a collision due to the lack of a marked crossing."}
{"id": "train_03343", "split": "train", "clip_key": "2020-0205-103411_112464_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "112464"}, "frames": ["2020-0205-103411_112464_movie_t-3.jpg", "2020-0205-103411_112464_movie_t-2.jpg", "2020-0205-103411_112464_movie_t-1.jpg", "2020-0205-103411_112464_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes and dry, slightly worn asphalt carries moderate traffic. A white van ahead in the ego lane drives away from the camera and continues straight, setting the ego vehicle's pace. A dark van slightly ahead to the left travels parallel in its lane and maintains course without merging. Farther ahead in the right lane, a large white box truck proceeds straight near the curb, keeping to its lane. An overhead signal beneath a pedestrian footbridge shows green straight arrows for this approach, so vehicles continue through.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. Since this vehicle is directly ahead in your lane, remain aware of its behavior to anticipate any sudden slowdowns."}
{"id": "train_03344", "split": "train", "clip_key": "2020-0221-115122_022215_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "022215"}, "frames": ["2020-0221-115122_022215_movie_t-3.jpg", "2020-0221-115122_022215_movie_t-2.jpg", "2020-0221-115122_022215_movie_t-1.jpg", "2020-0221-115122_022215_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban surface street runs under an elevated expressway with two same-direction lanes; the pavement is dry and intact, and traffic is heavy and stop-and-go. A white hatchback directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle. To the right, a line of cars including a light blue hatchback waits beside the ego car, creeping forward intermittently and limiting space to merge. Farther ahead, a white sedan and a box truck in the right lane inch forward, contributing to the backup. Overhead blue direction signs are visible, and the roadway is bounded by a planted curb on the left and guardrail and fencing on the right.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. Driver should stop now to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_03345", "split": "train", "clip_key": "2020-0220-102630_028942_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "028942"}, "frames": ["2020-0220-102630_028942_movie_t-3.jpg", "2020-0220-102630_028942_movie_t-2.jpg", "2020-0220-102630_028942_movie_t-1.jpg", "2020-0220-102630_028942_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the scooter", "environment_perception": "An urban street with two same-direction lanes has smooth pavement but slow, heavy flow where roadwork narrows the left lane ahead. A black scooter is stopped directly ahead in the ego lane because construction blocks the lane. Another scooter farther ahead near the center line edges forward to merge right around the obstruction, potentially entering the ego path. A white car in the adjacent right lane creeps past the scooters, reducing gaps for merging from the blocked lane. A large box truck queues ahead in the right lane while a work truck and orange cones occupy the left side, creating the choke point. Several workers and pedestrians stand near the work area on the left sidewalk, adding visual clutter close to the roadway.", "hazard_reasoning": "There is a black scooter stopped in the ego lane because it is blocked due to on-going construction, in front of the ego car. The driver should carefully manoeuvre around the scooter to avoid collision due to the lane obstruction."}
{"id": "train_03346", "split": "train", "clip_key": "2020-0129-144857_016005_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "016005"}, "frames": ["2020-0129-144857_016005_movie_t-3.jpg", "2020-0129-144857_016005_movie_t-2.jpg", "2020-0129-144857_016005_movie_t-1.jpg", "2020-0129-144857_016005_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with smooth asphalt and a low curb median on the right; all visible lanes flow in the same direction and traffic is heavy and slow. A black van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. Farther ahead in the same lane, a large white bus queues and creeps forward, reinforcing the slowdown. In the adjacent left lane, a small flatbed truck advances slowly past the van, constraining any lane change. No pedestrians or cyclists are visible, and the roadway itself is clear aside from the queuing vehicles.", "hazard_reasoning": "There is a black van stopped in front of the ego car, because of traffic congestion ahead. The driver should stop immediately to prevent a collision with the halted vehicle in the congested traffic."}
{"id": "train_03347", "split": "train", "clip_key": "titan_clip_122_000240_movie", "source": {"subset": "titan", "scenario": "clip_122", "frame": "000240"}, "frames": ["titan_clip_122_000240_movie_t-3.jpg", "titan_clip_122_000240_movie_t-2.jpg", "titan_clip_122_000240_movie_t-1.jpg", "titan_clip_122_000240_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision.", "environment_perception": "An urban commercial street with a single narrow two-way lane has no median and slightly worn asphalt, and traffic is light as the ego car moves slowly. A white kei car stands ahead at the left curb, partially intruding into the lane and constraining the ego vehicle's path. A cyclist carrying a backpack rides toward the ego along the right side of the road, approaching as oncoming traffic that may pass close by. Pedestrians line both sidewalks, and one person near the left side steps briefly into the roadway ahead, creating a minor hazard before moving away.", "hazard_reasoning": "There is a cyclist carrying a backpack, cycling toward the ego car on the right side of the road. The cyclist approaches the vehicle's path, so the driver should slow down to maintain safety."}
{"id": "train_03348", "split": "train", "clip_key": "2020-0205-103411_011807_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "011807"}, "frames": ["2020-0205-103411_011807_movie_t-3.jpg", "2020-0205-103411_011807_movie_t-2.jpg", "2020-0205-103411_011807_movie_t-1.jpg", "2020-0205-103411_011807_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two lanes in the ego direction approaches a signalized intersection; the pavement looks smooth and traffic is light to moderate, queuing at the stop line. Directly ahead in the ego lane, a black sedan is stopped at the red light, holding the ego vehicle. Slightly ahead to the left by the curb, a gray van waits in the left lane and stays in place without encroaching on the ego lane. On the cross street, a white van travels right to left through the junction while the ego waits. At the near right crosswalk, a cyclist rides leftward across the path under the cross traffic's green.", "hazard_reasoning": "There is a black Sedan stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver should stop to avoid collision and comply with the traffic signal."}
{"id": "train_03349", "split": "train", "clip_key": "2020-0127-132751_104380_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0127-132751_104380_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0127-132751_104380_movie_t-3_augB1.jpg", "2020-0127-132751_104380_movie_t-2_augB1.jpg", "2020-0127-132751_104380_movie_t-1_augB1.jpg", "2020-0127-132751_104380_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-lane two-way road with a solid center line runs past shops; the pavement is dry and traffic moves slowly. A silver microvan directly ahead in the ego lane shows brake lights and creeps forward, holding the ego vehicle's pace. On the right edge, a pedestrian wearing a face mask and carrying a handbag steps off the curb and crosses leftward in the middle of traffic directly in front of the ego car toward the left side, momentarily entering the ego path.", "hazard_reasoning": "There is a pedestrian wearing a handbag and face mask, crossing the street in the middle of traffic directly in front of the ego car, to the left side of the road. The driver must stop immediately to yield to the crossing pedestrian and prevent a collision."}
{"id": "train_03350", "split": "train", "clip_key": "titan_clip_689_000282_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_689_000282_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_689_000282_movie_t-3_augB1.jpg", "titan_clip_689_000282_movie_t-2_augB1.jpg", "titan_clip_689_000282_movie_t-1_augB1.jpg", "titan_clip_689_000282_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow urban shopping street with smooth pavement and no center divider runs straight between storefronts, and no vehicles are visible ahead or oncoming. A pedestrian wearing a black shirt and black pants walks away from the camera in the middle of the roadway, occupying the travel lane and constraining the ego vehicle's path. On the right near a restaurant sign, another pedestrian moves along the curb at close range, near the lane and may step into it. Farther ahead by the left storefronts, a pedestrian proceeds along the edge parallel to traffic without entering the lane. Cones, crates, and advertising boards line both curbs but remain outside the travel way.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants, walking in the middle of the road, away from the ego car. Because they occupy the travel lane, the driver must yield to avoid a potential collision."}
{"id": "train_03351", "split": "train", "clip_key": "titan_clip_1195_000174_movie", "source": {"subset": "titan", "scenario": "clip_1195", "frame": "000174"}, "frames": ["titan_clip_1195_000174_movie_t-3.jpg", "titan_clip_1195_000174_movie_t-2.jpg", "titan_clip_1195_000174_movie_t-1.jpg", "titan_clip_1195_000174_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow shared lane paved with blocks, lacking lane markings or crosswalks; the surface is dry and traffic is light with only pedestrians ahead. A pedestrian in a white shirt carrying a backpack crosses from the left to the right directly in front of the car midblock because there is no crosswalk. Slightly farther ahead, a pair of pedestrians move from the left storefront toward the center and continue across, constraining the ego vehicle's pace. On the right edge just ahead, a worker pushes a green handcart from the curb toward the lane and may merge into the path.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, crossing the street from the left side to the right side, in front of the car, because there is no crosswalk. The driver should slow down to prevent a potential collision with the pedestrian crossing unexpectedly."}
{"id": "train_03352", "split": "train", "clip_key": "2020-0207-151349_043007_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "043007"}, "frames": ["2020-0207-151349_043007_movie_t-3.jpg", "2020-0207-151349_043007_movie_t-2.jpg", "2020-0207-151349_043007_movie_t-1.jpg", "2020-0207-151349_043007_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs under an elevated expressway with two same-direction lanes bounded by concrete barriers; the pavement looks smooth and traffic is slow and congested throughout. A white sedan directly ahead in the ego lane slows to a crawl because of congestion, keeping the ego car's pace low. In the adjacent right lane, a black van slightly ahead moves slowly alongside, matching the queue. Farther ahead, several cars including a small truck remain lined up under the viaduct, sustaining the backup. Large support columns along the right edge and the barriered roadway limit sight distance.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and adapt to the reduced traffic speed."}
{"id": "train_03353", "split": "train", "clip_key": "titan_clip_819_000060_movie", "source": {"subset": "titan", "scenario": "clip_819", "frame": "000060"}, "frames": ["titan_clip_819_000060_movie_t-3.jpg", "titan_clip_819_000060_movie_t-2.jpg", "titan_clip_819_000060_movie_t-1.jpg", "titan_clip_819_000060_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street without a centerline runs between close-set buildings; the dry asphalt looks smooth and traffic is light. A pedestrian ahead on the left walks in the roadway along the curb, moving away from the ego vehicle and constraining its pace in the left-side lane. On the right side farther ahead, a cyclist rides toward the ego car as oncoming traffic, keeping near the curb in the tight space. A no-parking sign on a roadside pole is clearly visible.", "hazard_reasoning": "There is a cyclist on the right side of the road, cycling toward the ego car. The cyclist is approaching the vehicle, so the driver should slow down to maintain a safe distance."}
{"id": "train_03354", "split": "train", "clip_key": "2020-0205-152530_006478_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "006478"}, "frames": ["2020-0205-152530_006478_movie_t-3.jpg", "2020-0205-152530_006478_movie_t-2.jpg", "2020-0205-152530_006478_movie_t-1.jpg", "2020-0205-152530_006478_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van.", "environment_perception": "An urban two-lane two-way street with a single yellow centerline runs between mid-rise buildings; the pavement is smooth and traffic is light with no vehicle immediately ahead. Despite the note about a silver van parked on the right in the ego lane, the lane ahead appears clear with no stopped vehicle. Several pedestrians on the right sidewalk walk along the curb near building entrances without entering the roadway. A couple of oncoming cars are visible far ahead in the right-hand lane, proceeding toward the camera and remaining separated by the centerline. A bus stop zone is marked on the roadway with a matching bus stop sign on the left.", "hazard_reasoning": "There is a silver van parked on the right side of the road, in the ego lane. The silver van is obstructing your lane, requiring you to manoeuvre carefully to avoid collision."}
{"id": "train_03355", "split": "train", "clip_key": "2020-0131-103016_030634_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "030634"}, "frames": ["2020-0131-103016_030634_movie_t-3.jpg", "2020-0131-103016_030634_movie_t-2.jpg", "2020-0131-103016_030634_movie_t-1.jpg", "2020-0131-103016_030634_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane intersection with smooth asphalt and no median lies ahead, with light traffic; the ego vehicle approaches a broad zebra crossing under a green signal. Several same-direction cars in the left and center lanes beyond the junction continue straight and gradually pull away. A motorcyclist rides straight along the right curb lane just beyond the crosswalk. A white van is stopped near the right curb by the glass-fronted building. White roadside barriers line the left shoulder.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03356", "split": "train", "clip_key": "2020-0228-102841_092864_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "092864"}, "frames": ["2020-0228-102841_092864_movie_t-3.jpg", "2020-0228-102841_092864_movie_t-2.jpg", "2020-0228-102841_092864_movie_t-1.jpg", "2020-0228-102841_092864_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with one lane each way and no median runs between closely spaced buildings; the asphalt is smooth with a few manhole covers, and traffic in the ego lane is queued while oncoming flow is light. A white sedan directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle at a standstill. Farther ahead in the same direction, a tall white van is also halted in the line, indicating continued blockage up the road. No moving oncoming vehicles are visible. A motorcycle is parked at the right curb while railings line the left sidewalk.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain a safe distance and avoid collision with the stationary vehicle ahead."}
{"id": "train_03357", "split": "train", "clip_key": "titan_clip_262_000336_movie", "source": {"subset": "titan", "scenario": "clip_262", "frame": "000336"}, "frames": ["titan_clip_262_000336_movie_t-3.jpg", "titan_clip_262_000336_movie_t-2.jpg", "titan_clip_262_000336_movie_t-1.jpg", "titan_clip_262_000336_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of pedestrian ahead", "environment_perception": "A narrow urban two-way street with one lane each direction runs between tall buildings; the asphalt is clean and traffic is light. Orange cones line the left edge and squeeze the usable lane. On the left ahead, a pedestrian in a black suit walks toward the ego vehicle along the roadway because the bicycle lane is blocked by cones and a parked motorcycle, and he encroaches on the ego lane. Beside him at the curb, a motorcyclist stands by the parked bike next to several bicycles, remaining stationary and narrowing the passage. On the right near the storefronts, a pedestrian walks along the sidewalk and keeps off the carriageway. A triangular stop sign is visible at the intersection ahead.", "hazard_reasoning": "There is a pedestrian wearing a black suit and walking towards the ego car, on the left side of the road, because there are traffic cones and a parked motorcycle in the bicycle lane. The driver should be aware that the pedestrian may step into the lane due to the obstructed bike lane."}
{"id": "train_03358", "split": "train", "clip_key": "2020-0227-104226_054601_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054601"}, "frames": ["2020-0227-104226_054601_movie_t-3.jpg", "2020-0227-104226_054601_movie_t-2.jpg", "2020-0227-104226_054601_movie_t-1.jpg", "2020-0227-104226_054601_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the black SUV", "environment_perception": "An urban two-way street with one lane each way has smooth pavement and no median, and traffic is moderate as the ego car approaches a zebra crossing beneath overhead signals. A black SUV in the right lane drives toward the ego vehicle near the centerline, continuing straight and passing opposite our path. A silver minivan ahead in the ego lane just beyond the crosswalk moves slowly along the left edge, briefly constraining our pace. Farther ahead, another car follows the SUV in the opposing lane while keeping its line. A pedestrian signal on the left displays the walk symbol.", "hazard_reasoning": "There is a black SUV driving in the right lane, towards the ego car. Yielding is necessary to avoid a potential collision with the approaching vehicle."}
{"id": "train_03359", "split": "train", "clip_key": "titan_clip_800_000066_movie", "source": {"subset": "titan", "scenario": "clip_800", "frame": "000066"}, "frames": ["titan_clip_800_000066_movie_t-3.jpg", "titan_clip_800_000066_movie_t-2.jpg", "titan_clip_800_000066_movie_t-1.jpg", "titan_clip_800_000066_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban two-way street without a centerline runs between low-rise buildings, the asphalt is smooth, and vehicle traffic is light while movement is slow due to pedestrians. Ahead on the left, a pedestrian wearing black pants and a black T-shirt walks away along the roadway edge, close to the ego lane and constraining pace. Slightly farther ahead near the center-left, another man walks in the lane away from the car, edging toward the center and remaining in the path. On the right edge near the camera, a pedestrian approaches from ahead along the curb, keeping to the side while passing by. A small white van stands ahead near the left curb and another car is parked on the right, narrowing the available space.", "hazard_reasoning": "There is a pedestrian wearing black pants and a black t-shirt and walking away from the ego car on the left side of the road. The driver should manoeuvre around the pedestrian to maintain a safe distance and avoid a collision."}
{"id": "train_03360", "split": "train", "clip_key": "2020-0206-101736_066876_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "066876"}, "frames": ["2020-0206-101736_066876_movie_t-3.jpg", "2020-0206-101736_066876_movie_t-2.jpg", "2020-0206-101736_066876_movie_t-1.jpg", "2020-0206-101736_066876_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban multilane arterial carries two lanes in the ego's direction, divided from opposing traffic by a raised median with railings, and the pavement appears dry and smooth. Traffic is moderate and bunches near a signalized intersection ahead. A white van directly ahead in the ego lane slows to a stop because congestion forms at the intersection, constraining the ego vehicle's pace. Another small van just ahead to the left proceeds in the adjacent lane slightly faster, running parallel and limiting room to maneuver. Oncoming cars move on the far side of the median to the right, continuing steadily and remaining separated from the ego path. Overhead traffic lights are visible at the junction.", "hazard_reasoning": "There's a white van that has stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop to avoid rear-ending the halted van and respond safely to the congested traffic."}
{"id": "train_03361", "split": "train", "clip_key": "2020-0205-103411_077526_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "077526"}, "frames": ["2020-0205-103411_077526_movie_t-3.jpg", "2020-0205-103411_077526_movie_t-2.jpg", "2020-0205-103411_077526_movie_t-1.jpg", "2020-0205-103411_077526_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth asphalt and no physical median unfolds ahead, with three lanes in the ego direction and light to moderate flow that eases toward a distant junction. Ahead in the ego lane, a green tarped truck travels near and gradually slows as it approaches building traffic further ahead, constraining the ego vehicle's pace. Slightly ahead to the left, a white box truck in the adjacent lane continues at a similar speed, partially blocking forward visibility and limiting room to pass.", "hazard_reasoning": "There is a green truck slowing in the ego lane because of traffic congestion ahead on the road. The slowing truck indicates reduced speeds and possible queueing ahead, so you should slow down to maintain a safe following distance and avoid sudden braking."}
{"id": "train_03362", "split": "train", "clip_key": "2020-0226-101332_074821_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "074821"}, "frames": ["2020-0226-101332_074821_movie_t-3.jpg", "2020-0226-101332_074821_movie_t-2.jpg", "2020-0226-101332_074821_movie_t-1.jpg", "2020-0226-101332_074821_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs between tall buildings, the pavement is in good condition, and traffic is heavy and queued at an intersection. A black taxi directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. To the left, a silver van in the adjacent lane waits slightly ahead at the same light, limiting a lane change. To the right, a white minivan in the next lane creeps forward alongside. The overhead traffic signal shows red, and a blue straight-ahead sign is visible.", "hazard_reasoning": "There is a black taxi stopped in front of the ego car, because of a red traffic light. The vehicle is halted at the red signal, so the driver should stop to avoid a rear-end collision and comply with the traffic control."}
{"id": "train_03363", "split": "train", "clip_key": "2020-0227-104226_052858_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "052858"}, "frames": ["2020-0227-104226_052858_movie_t-3.jpg", "2020-0227-104226_052858_movie_t-2.jpg", "2020-0227-104226_052858_movie_t-1.jpg", "2020-0227-104226_052858_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction and a solid yellow median runs past shops and apartments; the pavement is smooth and traffic is light to moderate. Ahead in the ego lane, a silver van drives away from the ego car at a steady speed, effectively setting the pace. In the opposing lane on the right, a black minivan approaches and passes straight ahead, remaining separated by the median and not affecting the ego path. A white van is parked at the left curb near the camera. Large 40 speed markings are painted on the roadway.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car. The van is approaching a red light and may stop suddenly, so you should follow it to maintain a safe distance."}
{"id": "train_03364", "split": "train", "clip_key": "2020-0127-132751_016449_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "016449"}, "frames": ["2020-0127-132751_016449_movie_t-3.jpg", "2020-0127-132751_016449_movie_t-2.jpg", "2020-0127-132751_016449_movie_t-1.jpg", "2020-0127-132751_016449_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop promptly", "environment_perception": "An urban multi-lane arterial runs under an elevated roadway, with three lanes in the same direction, a curb and hedge at the left edge, and smooth pavement; traffic is heavy and mostly stopped in queues at a signal. Directly ahead in the ego lane, a white hatchback is stationary at a red light, holding the ego vehicle. In the adjacent right lane slightly ahead, a white van is also stopped alongside, limiting opportunities to move right. Farther ahead across the lanes, several cars wait in long lines toward the intersection. Overhead lane-use signs show the left lane for a left turn while the center and right lanes go straight, and the signal visible ahead displays red.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of a red traffic light. The driver should stop promptly to avoid rear-ending the vehicle ahead and obey the traffic signal."}
{"id": "train_03365", "split": "train", "clip_key": "2020-0228-150133_008984_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "008984"}, "frames": ["2020-0228-150133_008984_movie_t-3.jpg", "2020-0228-150133_008984_movie_t-2.jpg", "2020-0228-150133_008984_movie_t-1.jpg", "2020-0228-150133_008984_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane per direction and a solid center line runs between buildings; pavement looks smooth and traffic is paused near an intersection. Directly ahead, a white truck is stopped in the ego lane in front of the car, blocking the path. Along the left curb just ahead, a dark van is stopped in the same direction, reducing space to maneuver. On the right sidewalk near the junction, several pedestrians and a bicyclist wait by the crosswalk, while the oncoming side to the right appears clear. An overhead traffic signal ahead shows red.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The truck's halted position and illuminated brake lights indicate it is not moving, so the driver must stop to avoid a rear-end collision."}
{"id": "train_03366", "split": "train", "clip_key": "2020-0213-143552_032504_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_032504_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_032504_movie_t-3_augB1.jpg", "2020-0213-143552_032504_movie_t-2_augB1.jpg", "2020-0213-143552_032504_movie_t-1_augB1.jpg", "2020-0213-143552_032504_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban street with tall buildings lines a single-lane road without a center divider; the pavement looks smooth and traffic is light as the route bends slightly left toward an elevated overpass. On the left just ahead, a white box truck is stopped at the curb in the ego lane, narrowing the usable lane and requiring passing on its right. Beside this truck, a pedestrian wearing a black vest stands near the rear attending the vehicle, remaining close to the carriageway and may enter the ego lane. Far ahead in the same direction, a couple of small vans proceed toward the overpass at low speed, lightly setting the pace.", "hazard_reasoning": "There is a pedestrian wearing a black vest, standing on the left side of the road, because they are attending a vehicle. The pedestrian may step into the travel lane unexpectedly while attending to the vehicle, requiring cautious maneuvering."}
{"id": "train_03367", "split": "train", "clip_key": "titan_clip_21_000030_movie", "source": {"subset": "titan", "scenario": "clip_21", "frame": "000030"}, "frames": ["titan_clip_21_000030_movie_t-3.jpg", "titan_clip_21_000030_movie_t-2.jpg", "titan_clip_21_000030_movie_t-1.jpg", "titan_clip_21_000030_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked truck", "environment_perception": "An urban two-way street with one narrow lane each direction runs between mid-rise buildings, the pavement is smooth, and traffic is light. On the right, a silver box truck is parked with its rear open as workers unload goods, partially blocking that side and narrowing the usable roadway. Ahead on the left curb, a silver van stands stopped in the ego lane, reducing clearance for passing and influencing the approach speed. Near the truck, two people walk in the roadway and drift across ahead, so they are directly relevant to the ego vehicle's path. Bicycles are parked along the left sidewalk, adding roadside clutter but remaining stationary.", "hazard_reasoning": "There is a silver truck parked on the right side of the road, because it is being unloaded. The parked truck narrows your intended path and may force you to slow down or change lanes, so you should be aware of its position."}
{"id": "train_03368", "split": "train", "clip_key": "2020-0203-154554_039107_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "039107"}, "frames": ["2020-0203-154554_039107_movie_t-3.jpg", "2020-0203-154554_039107_movie_t-2.jpg", "2020-0203-154554_039107_movie_t-1.jpg", "2020-0203-154554_039107_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated structure, with concrete barriers on both sides, good pavement, and slow-moving traffic in the same direction. A white box truck ahead in the ego lane slows because of congestion further up the road, setting the ego vehicle's pace. A small white van in the adjacent right lane travels slowly alongside the truck while maintaining its lane. Another white minivan is stopped on the right shoulder within the diagonal-striped buffer near a pillar, narrowing space for right-lane vehicles. Overhead directional signs and roadside restrictions are visible but do not change the flow.", "hazard_reasoning": "There is a white truck slowing in the ego lane because of traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and adjust speed due to the congested traffic ahead."}
{"id": "train_03369", "split": "train", "clip_key": "titan_clip_480_000030_movie", "source": {"subset": "titan", "scenario": "clip_480", "frame": "000030"}, "frames": ["titan_clip_480_000030_movie_t-3.jpg", "titan_clip_480_000030_movie_t-2.jpg", "titan_clip_480_000030_movie_t-1.jpg", "titan_clip_480_000030_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian ahead", "environment_perception": "A dense urban shopping street with a narrow single-lane roadway of block paving runs straight between storefronts, bounded by bollards; pavement looks even and vehicular traffic is very light. On the right side of the road, a pedestrian in a white shirt and black pants walks away from the ego vehicle in the carriageway, using the road because the sidewalk is busy, and remains within the ego path. Farther ahead near the middle of the lane, two other pedestrians walk away in the same direction and continue along the travel path, which constrains the ego vehicle's pace. Restaurant signs, cones, and menu boards project from the right frontage and slightly narrow the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and walking on the right side of the road, away from the ego car, because of a busy sidewalk. The pedestrian may step into the roadway unpredictably due to sidewalk congestion, so slow down for safety."}
{"id": "train_03370", "split": "train", "clip_key": "titan_clip_245_000390_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_245_000390_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_245_000390_movie_t-3_augB1.jpg", "titan_clip_245_000390_movie_t-2_augB1.jpg", "titan_clip_245_000390_movie_t-1_augB1.jpg", "titan_clip_245_000390_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with smooth pavement and no median is seen, the ego car traveling in the left lane amid light to moderate flow. A black minivan ahead in the ego lane moves slowly behind another car, constraining the ego vehicle's pace. On the right edge of the lane, a pedestrian wearing a blue shirt and black pants wheels a cart toward the camera, walking partially in the roadway and likely to encroach on the ego path. No oncoming vehicles are visible. Several vans are stopped along the left curb, one with its rear door open for loading, narrowing the passage.", "hazard_reasoning": "There is a pedestrian, wearing a blue shirt and black pants, and wheeling a cart, walking on the right side of the road, in the ego lane, towards the ego car. The pedestrian may cross or obstruct your path, so you should manoeuvre around them to avoid a collision."}
{"id": "train_03371", "split": "train", "clip_key": "2020-0212-150403_018789_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "018789"}, "frames": ["2020-0212-150403_018789_movie_t-3.jpg", "2020-0212-150403_018789_movie_t-2.jpg", "2020-0212-150403_018789_movie_t-1.jpg", "2020-0212-150403_018789_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with the stopped SUV.", "environment_perception": "An urban multilane road with no median runs between midrise buildings, the pavement smooth and dry, and traffic is moderate but momentarily stopped. A large black SUV directly ahead in the ego lane is stationary with brake lights on because of congestion ahead, blocking the ego vehicle's path. In the adjacent right lane a dark car slightly ahead also waits in the queue, limiting any immediate lane change. At the left curb a dark van stands, and a pedestrian beside it on the sidewalk walks forward near the roadway but remains clear of the lane. Overhead Japanese directional signs are visible.", "hazard_reasoning": "There is a black SUV stopped in the ego lane because of traffic congestion ahead, in front of the ego car. The driver should stop to avoid colliding with the halted SUV ahead."}
{"id": "train_03372", "split": "train", "clip_key": "2020-0203-154554_073680_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "073680"}, "frames": ["2020-0203-154554_073680_movie_t-3.jpg", "2020-0203-154554_073680_movie_t-2.jpg", "2020-0203-154554_073680_movie_t-1.jpg", "2020-0203-154554_073680_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with multiple lanes and a hatched divider is seen, the pavement dry and slightly rough as traffic moves slowly toward a junction. A black motorcycle ahead in the ego lane slows directly in front of the camera car, setting the pace. A beige mini-van farther ahead in the same lane also decelerates near the junction, further constraining the ego vehicle. A red hatchback just ahead in the adjacent right lane continues straight at a similar speed, staying parallel without encroaching. Several cars and vans approach in the opposite lanes on the right, flowing steadily through the intersection without interacting. Parked vehicles line the left curb, and low sun ahead creates glare that reduces contrast.", "hazard_reasoning": "There is a black motorcycle slowing in the ego lane, in front of the ego car. The motorcycle's deceleration poses a sudden hazard, so the driver should slow down to maintain a safe following distance."}
{"id": "train_03373", "split": "train", "clip_key": "2020-0228-102841_094983_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "094983"}, "frames": ["2020-0228-102841_094983_movie_t-3.jpg", "2020-0228-102841_094983_movie_t-2.jpg", "2020-0228-102841_094983_movie_t-1.jpg", "2020-0228-102841_094983_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection comes into view on a two-way road with smooth pavement and no median; traffic is moderate and the ego lane is queued at the light. A white sedan is stopped directly ahead in the ego lane because the overhead signal shows red, holding the ego vehicle in place. On the right-side oncoming lanes, a white box truck waits near its stop line at the intersection, close to the crosswalk but not entering the ego path. Cross traffic includes a small hatchback moving right to left through the junction on its green, and several pedestrians walk across the marked crosswalk ahead.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop because the sedan is halted at the red light, blocking forward progress and requiring a full stop to avoid a collision."}
{"id": "train_03374", "split": "train", "clip_key": "titan_clip_1326_000288_movie", "source": {"subset": "titan", "scenario": "clip_1326", "frame": "000288"}, "frames": ["titan_clip_1326_000288_movie_t-3.jpg", "titan_clip_1326_000288_movie_t-2.jpg", "titan_clip_1326_000288_movie_t-1.jpg", "titan_clip_1326_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single two-way lane, no median, and dry pavement approaches an unsignalized intersection; traffic is light. Ahead, a pedestrian in a blue shirt pulls a trolley from the right curb across the lane toward the left, moving slowly in front of the ego car and temporarily occupying the path. Farther ahead on the intersecting street, a white van moves slowly across the opening without entering the ego lane. A convex mirror and a prominent \"止まれ\" (stop) marking are visible at the intersection. Shop banners and a parked bicycle line the left edge but do not intrude into the roadway.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, pulling a trolley, crossing the street in front of the ego car, from the right side to the left side. You should slow down to yield to the pedestrian and ensure you can stop safely if they continue crossing."}
{"id": "train_03375", "split": "train", "clip_key": "titan_clip_119_000126_movie", "source": {"subset": "titan", "scenario": "clip_119", "frame": "000126"}, "frames": ["titan_clip_119_000126_movie_t-3.jpg", "titan_clip_119_000126_movie_t-2.jpg", "titan_clip_119_000126_movie_t-1.jpg", "titan_clip_119_000126_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian pushing cart ahead", "environment_perception": "A narrow urban street between mid-rise buildings has a single lane in the ego direction, no median, and smooth pavement; traffic is light and no oncoming vehicles are visible. Ahead on the left side within the ego lane, a pedestrian wearing a cap, black T-shirt, and beige pants pushes a cart and walks away from the car, occupying part of the lane and constraining the available path. Farther ahead, a white van proceeds in the same direction down the center of the lane and continues away. On the right, pedestrians move along the storefront sidewalk and remain off the roadway. Parked bicycles line both curbs, narrowing the margins.", "hazard_reasoning": "A pedestrian, wearing a cap, black t-shirt, and beige pants, is pushing a cart and walking on the left side of the road in the ego lane, away from the ego car. The driver should be aware of this pedestrian moving in their lane, as they may alter their path or slow unexpectedly."}
{"id": "train_03376", "split": "train", "clip_key": "titan_clip_392_000300_movie", "source": {"subset": "titan", "scenario": "clip_392", "frame": "000300"}, "frames": ["titan_clip_392_000300_movie_t-3.jpg", "titan_clip_392_000300_movie_t-2.jpg", "titan_clip_392_000300_movie_t-1.jpg", "titan_clip_392_000300_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "A narrow urban street with block paving and no center line runs between tall buildings, functioning as a single shared lane; traffic is light and the pavement is in good condition. A gray van is parked along the left curb just ahead, reducing the usable width of the lane. A pedestrian at the van's right front door opens it, placing the person and door in the roadway and potentially into the ego lane. Farther ahead, several pedestrians walk along the middle and right side of the street, moving away and constraining passing space. No moving vehicles appear. An open garage entrance with a cone is visible on the right edge.", "hazard_reasoning": "There is a gray van parked on the left side of the street because there is a pedestrian opening its right front door. The driver should manoeuvre carefully around the van to avoid colliding with the opening door or the pedestrian."}
{"id": "train_03377", "split": "train", "clip_key": "2020-0210-155354_020274_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "020274"}, "frames": ["2020-0210-155354_020274_movie_t-3.jpg", "2020-0210-155354_020274_movie_t-2.jpg", "2020-0210-155354_020274_movie_t-1.jpg", "2020-0210-155354_020274_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with two lanes in the ego direction and no median runs between mid-rise buildings; the pavement is smooth and traffic is moderate. A white van ahead in the ego lane moves right into the adjacent lane as a clear gap opens in front. Another white van slightly farther ahead stays in the right lane and continues straight, setting the pace in that lane. A scooter travels forward along the far right by the curb near a work zone with orange netting and may merge into the right lane. A straight-ahead regulatory sign is visible on the left.", "hazard_reasoning": "There is a white van in front of the ego car, changing lanes from the ego lane to the right lane, because of a clear road ahead. The lane change could require you to slow down to maintain a safe following distance and avoid a potential collision."}
{"id": "train_03378", "split": "train", "clip_key": "2020-0205-103411_044828_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "044828"}, "frames": ["2020-0205-103411_044828_movie_t-3.jpg", "2020-0205-103411_044828_movie_t-2.jpg", "2020-0205-103411_044828_movie_t-1.jpg", "2020-0205-103411_044828_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs beneath stacked elevated expressways, divided from oncoming lanes by a metal fence median; the pavement is dry and traffic is heavy with queues at a signalized intersection. A black sedan directly ahead in the ego lane is stopped for a red traffic light, holding the ego car in place. To the left, a black van and other cars are lined up and stationary in their lane, matching the same red phase and constraining overall flow. On the right beyond the median, a red-and-white taxi and several oncoming vehicles move slowly through the junction without affecting the ego path. Overhead signals show red for this approach.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of a red traffic light. You should stop to maintain a safe following distance and obey the red signal."}
{"id": "train_03379", "split": "train", "clip_key": "2020-0131-103016_020930_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "020930"}, "frames": ["2020-0131-103016_020930_movie_t-3.jpg", "2020-0131-103016_020930_movie_t-2.jpg", "2020-0131-103016_020930_movie_t-1.jpg", "2020-0131-103016_020930_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of pedestrian crossing", "environment_perception": "An urban multi-lane intersection with smooth asphalt and clear zebra crossings lies ahead; lanes are defined by painted islands and traffic is light. On the left-side crosswalk, a woman carrying a handbag walks toward the ego vehicle, moving across the lane where she may enter the path near the corner. Two other pedestrians stand at the left corner on the sidewalk, waiting and not stepping into the crossing. Several oncoming vehicles line up beyond the intersection along the right side of the road without interacting with the ego lane. Overhead signals control the junction, and a posted 50 sign is visible ahead.", "hazard_reasoning": "There is a woman carrying a handbag, crossing the street on the left side of the intersection, towards the ego. The driver should be cautious because the pedestrian may enter the vehicle's path unexpectedly, requiring prompt speed adjustment."}
{"id": "train_03380", "split": "train", "clip_key": "titan_clip_485_000120_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_485_000120_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_485_000120_movie_t-3_augB1.jpg", "titan_clip_485_000120_movie_t-2_augB1.jpg", "titan_clip_485_000120_movie_t-1_augB1.jpg", "titan_clip_485_000120_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single left-side lane and no divider runs between buildings and a construction wall; the pavement is dry and traffic is light. A pedestrian in a black T-shirt and pants walks away from the ego vehicle in the middle of the lane because the sidewalk is crowded with other pedestrians, directly occupying the ego path. A dark sedan stands at the right curb partly intruding into the lane, further narrowing the passage around the pedestrian. Other pedestrians move along the left sidewalk near the building, remaining off the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and pants, walking in the middle of the road, away from the ego car, because the sidewalk is taken up by other pedestrians. The driver should slow down to avoid colliding with the pedestrian in the roadway."}
{"id": "train_03381", "split": "train", "clip_key": "2020-0205-103411_121140_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "121140"}, "frames": ["2020-0205-103411_121140_movie_t-3.jpg", "2020-0205-103411_121140_movie_t-2.jpg", "2020-0205-103411_121140_movie_t-1.jpg", "2020-0205-103411_121140_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with a single left-side through lane and a separated service lane runs straight on dry, well-kept pavement, and traffic is moving at a moderate pace. The right edge is partitioned by chevrons and a low curb that isolate the service lane. A dark hatchback directly ahead in the ego lane travels steadily, setting the pace. Farther ahead in the same lane, a white van pulls away under a green traffic light and opens the gap. In the service lane to the right, a white box truck and a dark minivan remain stopped by the curb among other parked vehicles. The overhead signal ahead shows green.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03382", "split": "train", "clip_key": "titan_clip_392_000084_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_392_000084_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_392_000084_movie_t-3_augB1.jpg", "titan_clip_392_000084_movie_t-2_augB1.jpg", "titan_clip_392_000084_movie_t-1_augB1.jpg", "titan_clip_392_000084_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban backstreet with interlocking-brick pavement has no centerline or median, and parked vehicles along both curbs reduce the usable width; traffic is light and slow. Ahead in the ego lane, a pedestrian in a white shirt and pants walks away from the camera along the middle of the road, occupying the ego path and constraining speed. Farther ahead near the left curb, a small silver kei van stands stopped, partially inside the lane and creating a pinch point. On the right, a white van is parked facing the same direction, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and pants, walking away from the ego car, in the ego lane. Because the pedestrian is occupying the vehicle's lane and may change direction unpredictably, the driver should manoeuvre around them to maintain safety."}
{"id": "train_03383", "split": "train", "clip_key": "2020-0131-135401_080049_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "080049"}, "frames": ["2020-0131-135401_080049_movie_t-3.jpg", "2020-0131-135401_080049_movie_t-2.jpg", "2020-0131-135401_080049_movie_t-1.jpg", "2020-0131-135401_080049_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with three same-direction lanes and concrete side barriers has smooth pavement and light, steady traffic. A white van travels ahead in the ego lane, moving away and holding a straight course, so it modestly sets the pace while leaving a widening gap. A black hatchback slightly ahead to the left continues straight in the adjacent lane at similar speed, remaining parallel and not entering the ego lane. A diamond-shaped roadside warning sign is visible on the left, and overhead gantries approach in the distance.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03384", "split": "train", "clip_key": "2020-0227-104226_087058_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-104226_087058_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-104226_087058_movie_t-3_augB1.jpg", "2020-0227-104226_087058_movie_t-2_augB1.jpg", "2020-0227-104226_087058_movie_t-1_augB1.jpg", "2020-0227-104226_087058_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial carries two-way traffic, with two same-direction lanes for the ego separated from oncoming lanes by a painted chevron median; pavement is dry and traffic is heavy and slow. The ego travels in the right lane. A red car directly ahead in the ego lane slows and creeps because of traffic congestion ahead, constraining the ego's pace. Farther ahead, a white box truck in the adjacent left same-direction lane also moves slowly as part of the queue. To the right across the median, a large oncoming truck approaches in its near lane with another car nearby, both clearly separated from the ego's path. No salient signals or hazards are visible.", "hazard_reasoning": "There is a red car, slowing, in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of the vehicle ahead."}
{"id": "train_03385", "split": "train", "clip_key": "2020-0226-101332_023707_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "023707"}, "frames": ["2020-0226-101332_023707_movie_t-3.jpg", "2020-0226-101332_023707_movie_t-2.jpg", "2020-0226-101332_023707_movie_t-1.jpg", "2020-0226-101332_023707_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multilane arterial with smooth pavement carries moderate traffic toward a signalized intersection, with three same-direction lanes marked and no median visible. A white truck directly ahead in the ego lane slows and queues for the red light, constraining the ego car. To the left, a white van in the adjacent lane creeps forward alongside toward the stop line. On the right, utility trucks stand within a coned work area while a worker waits by the crosswalk, remaining outside the travel lanes. The overhead signal facing the approach shows red.", "hazard_reasoning": "There's a white truck slowing in front of the ego car in the ego lane, because of red traffic lights. The truck's deceleration reduces your available stopping distance, so you must stop to avoid a collision and comply with the signal."}
{"id": "train_03386", "split": "train", "clip_key": "titan_clip_836_000216_movie", "source": {"subset": "titan", "scenario": "clip_836", "frame": "000216"}, "frames": ["titan_clip_836_000216_movie_t-3.jpg", "titan_clip_836_000216_movie_t-2.jpg", "titan_clip_836_000216_movie_t-1.jpg", "titan_clip_836_000216_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban commercial street with brick-pattern paving lacks lane markings or a median, functioning as a shared low-speed space with light motor traffic and many pedestrians. Two pedestrians ahead slightly left in the ego lane walk away from the vehicle, one wearing a white shirt with a camera bag and the other in a flowered skirt holding an umbrella and a handbag, weaving around others and remaining in the path. Another pedestrian farther left also walks away toward the intersection by the storefronts. On the right, a stationary blue truck is parked at the curb while a worker handles a handcart beside its open bed, staying at the roadside. Orange cones mark the frontage near the building ahead.", "hazard_reasoning": "There are two pedestrians, one male wearing a white shirt and carrying a camera bag, and one female wearing a flowered skirt, carrying a handbag, and holding an umbrella, walking on the left side of the road, in the ego lane, away from the ego-car, because they are maneuvering around other pedestrians. Drivers should carefully manoeuvre to avoid colliding with pedestrians walking in the driving lane."}
{"id": "train_03387", "split": "train", "clip_key": "2020-0227-104226_103221_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "103221"}, "frames": ["2020-0227-104226_103221_movie_t-3.jpg", "2020-0227-104226_103221_movie_t-2.jpg", "2020-0227-104226_103221_movie_t-1.jpg", "2020-0227-104226_103221_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial lined with mid-rise buildings has smooth dry pavement and heavy stop-and-go flow. A white box truck is stopped directly ahead in the ego lane, blocking the ego car's path and fixing the pace. To the right, cars in the same-direction adjacent lane inch forward beside the truck, leaving little room to merge. To the left, a small white hatchback in the neighboring lane remains nearly level with the ego vehicle and creeps along with the queue. A pedestrian overpass spans the road ahead.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. Stop to avoid a rear-end collision with the stationary truck ahead."}
{"id": "train_03388", "split": "train", "clip_key": "2020-0228-102841_082221_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "082221"}, "frames": ["2020-0228-102841_082221_movie_t-3.jpg", "2020-0228-102841_082221_movie_t-2.jpg", "2020-0228-102841_082221_movie_t-1.jpg", "2020-0228-102841_082221_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "be aware of the motorcycle", "environment_perception": "An urban multilane arterial runs under an elevated roadway, with clean pavement and no physical median; traffic is moderate and flows steadily, with several trucks occupying the left lanes. Ahead in the ego lane a black motorcycle drives away from the ego car, following a small box truck and effectively setting the pace. To the left a white sedan travels slightly faster in the adjacent lane and edges forward near the truck, remaining relevant as it could move over. On the right a black van in the neighboring lane progresses alongside the ego vehicle, holding a parallel position as the lanes continue toward a junction.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane away from the ego car. The motorcycle may change speed or brake abruptly, so the driver should be aware of its movements to maintain a safe following distance."}
{"id": "train_03389", "split": "train", "clip_key": "2020-0220-102630_028316_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "028316"}, "frames": ["2020-0220-102630_028316_movie_t-3.jpg", "2020-0220-102630_028316_movie_t-2.jpg", "2020-0220-102630_028316_movie_t-1.jpg", "2020-0220-102630_028316_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-lane one-way street with dry asphalt and no median shows moderate traffic that slows near roadside construction cones along the left edge. A scooter ahead in the ego lane shifts right to the adjacent lane because of construction work on the left side of the road. A large box truck farther ahead proceeds slowly near the cones, bottlenecking the lane and setting the pace. A white sedan in the right lane runs alongside and continues straight, limiting room for merging. On the left sidewalk, two pedestrians stand near the curb outside the roadway.", "hazard_reasoning": "There is a black scooter in front of the ego car, changing lanes from the ego lane to the right lane, because of construction work on the left side of the road. The driver should follow the vehicle ahead to anticipate its lane change caused by the obstruction and maintain a safe distance."}
{"id": "train_03390", "split": "train", "clip_key": "titan_clip_1113_000420_movie", "source": {"subset": "titan", "scenario": "clip_1113", "frame": "000420"}, "frames": ["titan_clip_1113_000420_movie_t-3.jpg", "titan_clip_1113_000420_movie_t-2.jpg", "titan_clip_1113_000420_movie_t-1.jpg", "titan_clip_1113_000420_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban shopping street with a single narrow brick-paved carriageway and no median or centerline is shown; vehicular flow is minimal while pedestrian activity is heavy, and the pavement appears in good condition. A pedestrian in a gray shirt and black pants walks ahead in the middle of the road, moving away from the ego vehicle and occupying its path. On the left near the travel way, a man in a white shirt walks toward the camera while looking at his phone, edging into the lane. Farther ahead and along both sides, small groups walk by the edges and cross the roadway, constraining the vehicle's pace.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black pants, walking in the middle of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a collision under this situation."}
{"id": "train_03391", "split": "train", "clip_key": "titan_clip_399_000048_movie", "source": {"subset": "titan", "scenario": "clip_399", "frame": "000048"}, "frames": ["titan_clip_399_000048_movie_t-3.jpg", "titan_clip_399_000048_movie_t-2.jpg", "titan_clip_399_000048_movie_t-1.jpg", "titan_clip_399_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shopping street forms a narrow single-lane shared roadway without a centerline, paved with interlocking blocks in good condition, and overall motor traffic is very light. Orange cones and shop signboards line the edges and encroach slightly into the lane. On the right side ahead, a man in a black shirt pushes a wheeled cart toward the ego car along the edge of the road, potentially entering the ego path. Near the left curb close to the camera, another pedestrian steps into the lane while handling a cone, momentarily constraining the ego vehicle's pace. Far ahead near the center of this two-way alley, a small car approaches slowly in the opposite direction, indicating limited passing space.", "hazard_reasoning": "There is a man wearing a black shirt, pushing a wheeled cart, and walking on the right side of the road, toward the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a collision as he could enter the vehicle's path."}
{"id": "train_03392", "split": "train", "clip_key": "2020-0204-103442_016199_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "016199"}, "frames": ["2020-0204-103442_016199_movie_t-3.jpg", "2020-0204-103442_016199_movie_t-2.jpg", "2020-0204-103442_016199_movie_t-1.jpg", "2020-0204-103442_016199_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes curves gently left beneath an elevated expressway; the pavement is dry and smooth, with a right-side guardrail and lane arrows for straight and right turns. Traffic is moderate, forming a short queue at a signal ahead. A silver hatchback directly ahead in the ego lane slows to a stop for the red light, holding the ego vehicle. To the right, a black SUV in the right-turn lane brakes and waits near the intersection. Farther ahead, several cars line up under the overpass in the through lanes and inch forward toward the stop line. The traffic signal ahead shows red.", "hazard_reasoning": "There is a sliver hatchback stopping in front of the ego car, in the ego lane, because of a red traffic light. The hatchback is halted at the red light directly ahead, so you must stop to avoid a rear-end collision."}
{"id": "train_03393", "split": "train", "clip_key": "2020-0207-151349_093099_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "093099"}, "frames": ["2020-0207-151349_093099_movie_t-3.jpg", "2020-0207-151349_093099_movie_t-2.jpg", "2020-0207-151349_093099_movie_t-1.jpg", "2020-0207-151349_093099_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with a median fence separating opposing traffic and dry, worn pavement is seen in heavy, slow-moving flow under strong sun glare. A white mini-truck with a green tarp is stopped directly ahead in the ego lane, waiting at a red traffic light and holding the ego vehicle. In the adjacent right lane slightly ahead, a large dump truck is also stopped in the queue, limiting any immediate lane change to the right. On the far right, a silver minivan waits alongside the dump truck at a similar pace. Overhead gantry signs appear ahead, and the low sun to the right causes noticeable glare but no other hazards are visible.", "hazard_reasoning": "There is a white truck with a green tarp stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop to avoid colliding with the stationary truck at the red light."}
{"id": "train_03394", "split": "train", "clip_key": "titan_clip_1337_000354_movie", "source": {"subset": "titan", "scenario": "clip_1337", "frame": "000354"}, "frames": ["titan_clip_1337_000354_movie_t-3.jpg", "titan_clip_1337_000354_movie_t-2.jpg", "titan_clip_1337_000354_movie_t-1.jpg", "titan_clip_1337_000354_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of crossing pedestrian", "environment_perception": "An urban narrow two-way street with a single lane each way has smooth pavement and no median; traffic is light with no vehicles ahead in the ego lane or oncoming. Far ahead near the intersection, a pedestrian in a blue shirt crosses the street from left to right and may enter the ego path. On the right edge close ahead, two pedestrians walk toward the camera along the curb, partly in the roadway and reducing clearance for the ego vehicle. A small group stands further ahead on the right by a building entrance, lingering near the lane and potentially stepping out. Parked bicycles line the left curb by a shop, and an A-frame signboard and other items encroach from the left, narrowing the passage near the ego vehicle. No traffic signal is visible at the junction.", "hazard_reasoning": "A pedestrian in a blue shirt, crossing the street near the intersection, from the left side to the right side of the street. This pedestrian may enter your path unexpectedly, so be cautious of crossing pedestrian."}
{"id": "train_03395", "split": "train", "clip_key": "titan_clip_424_000162_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_424_000162_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_424_000162_movie_t-3_augB1.jpg", "titan_clip_424_000162_movie_t-2_augB1.jpg", "titan_clip_424_000162_movie_t-1_augB1.jpg", "titan_clip_424_000162_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way neighborhood street with smooth asphalt and no center line runs between buildings, with light traffic and no median. The ego-vehicle proceeds in the left lane. A pedestrian in a black dress carrying an umbrella crosses from the left ahead where no crosswalk is marked, passing in front of the ego car in the ego lane. A small white kei truck farther ahead in the same direction continues along the street at low speed but remains well ahead. On the right edge near the curb, a scooter with a rider stands stopped, angled toward the roadway and forming a roadside obstruction. Construction sheeting and barriers line the left side, narrowing sight lines.", "hazard_reasoning": "There is a pedestrian wearing a black dress, carrying an umbrella, and crossing the street from the left side, because there is no pedestrian crossing, in front of the ego car. The driver should slow down because the pedestrian is crossing without a designated crosswalk and may enter the vehicle's path unexpectedly."}
{"id": "train_03396", "split": "train", "clip_key": "titan_clip_646_000408_movie", "source": {"subset": "titan", "scenario": "clip_646", "frame": "000408"}, "frames": ["titan_clip_646_000408_movie_t-3.jpg", "titan_clip_646_000408_movie_t-2.jpg", "titan_clip_646_000408_movie_t-1.jpg", "titan_clip_646_000408_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with shops lines the scene, with smooth pavement, no center divider, and light vehicular traffic; no cars are ahead or oncoming as the road leads to a small intersection with a zebra crossing. On the right foreground at the curb, a pedestrian using a phone stands partly in the lane, posing a potential entry into the ego path. Farther ahead along the left edge, a woman carrying an umbrella walks away within the green shoulder, keeping close to the travel lane and potentially constraining speed. Near the left shopfront, another pedestrian with a backpack walks along the edge in the same direction as the ego vehicle, close enough that he may drift into the lane.", "hazard_reasoning": "There are two pedestrians wearing a white skirt and pink dress walking along the right side of the lane, away from the ego car. The driver should slow down to anticipate potential pedestrian crossing from the sidewalk."}
{"id": "train_03397", "split": "train", "clip_key": "2020-0127-132751_067427_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "067427"}, "frames": ["2020-0127-132751_067427_movie_t-3.jpg", "2020-0127-132751_067427_movie_t-2.jpg", "2020-0127-132751_067427_movie_t-1.jpg", "2020-0127-132751_067427_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with smooth asphalt runs past shops and apartments, separated by a metal guardrail median; the ego travels in a single through lane and overall flow is slow near a signalized junction. A white van is stopped directly ahead in the ego lane, queuing in congestion and constraining the ego vehicle. Oncoming cars move along the far side of the median at a steady pace without interacting with the ego path. Pedestrians walk on both sidewalks and stay clear of the roadway. A traffic signal is visible above the intersection ahead, with red-painted pavement marking the approach.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain a safe following distance and avoid colliding with the halted vehicle."}
{"id": "train_03398", "split": "train", "clip_key": "titan_clip_330_000066_movie", "source": {"subset": "titan", "scenario": "clip_330", "frame": "000066"}, "frames": ["titan_clip_330_000066_movie_t-3.jpg", "titan_clip_330_000066_movie_t-2.jpg", "titan_clip_330_000066_movie_t-1.jpg", "titan_clip_330_000066_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "An urban commercial street with a single narrow shared lane and brick pavement runs between dense shopfronts; there is no divider and vehicle traffic is light while pedestrian activity is heavy. The surface appears even and dry, and the scene stays slow-paced with frequent crossings. A pedestrian in a white T-shirt carrying a handbag crosses immediately in front of the ego car from right to left, entering the vehicle's path. Another person in dark clothing crosses slightly farther ahead from left to right at the same point, occupying the lane momentarily. Several pedestrians walk ahead along the center of the lane in the same direction as the ego vehicle, reducing clearance and constraining progress. Bollards and curb edges line both sides, further narrowing the approach.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, carrying a handbag, crossing the street in front of the ego car, from the right side to the left side. The driver should yield to the crossing pedestrian to avoid a potential collision."}
{"id": "train_03399", "split": "train", "clip_key": "titan_clip_743_000288_movie", "source": {"subset": "titan", "scenario": "clip_743", "frame": "000288"}, "frames": ["titan_clip_743_000288_movie_t-3.jpg", "titan_clip_743_000288_movie_t-2.jpg", "titan_clip_743_000288_movie_t-1.jpg", "titan_clip_743_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban commercial street with a narrow two-way carriageway and no centerline extends ahead; the pavement is smooth and traffic is light as the ego vehicle proceeds straight. On the left near the curb, a pedestrian in a white shirt and black pants stands by a storefront, close to the roadway and within reach of the ego lane. Far ahead in the lane, a cyclist travels in the same direction near the center of the street, keeping a steady pace along the ego path. Additional pedestrians walk along both sidewalks. Orange cones line the right curb, marking a small roadside work area.", "hazard_reasoning": "The pedestrian in white shirt and black pant is standing in the left side of the road. The driver should carefully manoeuvre to avoid a potential collision with the pedestrian partly on the roadway."}
{"id": "train_03400", "split": "train", "clip_key": "2020-0210-155354_034832_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "034832"}, "frames": ["2020-0210-155354_034832_movie_t-3.jpg", "2020-0210-155354_034832_movie_t-2.jpg", "2020-0210-155354_034832_movie_t-1.jpg", "2020-0210-155354_034832_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging vehicle", "environment_perception": "An urban arterial with at least three same-direction lanes shows dry, smooth pavement and heavy, slow-moving traffic. Directly ahead, a black hatchback begins moving from the ego lane into the left lane, straddling the line as it merges and briefly constraining the ego car's pace. In the left lane slightly ahead, a white van slows in the queue, reducing the gap the hatchback is aiming for. Ahead in the right lane, a dark sedan progresses at a similar slow speed, effectively pacing the ego vehicle. Overhead blue directional signs indicate route guidance to nearby districts.", "hazard_reasoning": "There is a black hatchback in front of the ego car, changing to the left lane from the ego lane. As it merges, the driver should be cautious because the vehicle may cut in unexpectedly and require speed or steering adjustments."}
{"id": "train_03401", "split": "train", "clip_key": "2020-0227-153144_016543_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-153144_016543_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-153144_016543_movie_t-3_augB1.jpg", "2020-0227-153144_016543_movie_t-2_augB1.jpg", "2020-0227-153144_016543_movie_t-1_augB1.jpg", "2020-0227-153144_016543_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way arterial with wide painted hatchings and no physical median has smooth pavement and a moderate-to-heavy flow that compresses ahead. A white SUV directly ahead in the ego lane slows in response to the queue, constraining the ego vehicle's pace. In the adjacent same-direction lane to the right, a dark van also brakes with the congestion, traveling roughly alongside. On the far right, oncoming cars, including taxis, move toward the camera in their lanes beyond the hatched divider without encroaching. A black sedan sits stopped in a marked bay at the left curb while pedestrians stand along the sidewalks.", "hazard_reasoning": "There is a white SUV slowing down in front of the ego car in the ego lane, because of traffic congestion ahead. Slow down to maintain a safe following distance and adjust to the reduced speed of the vehicle ahead."}
{"id": "train_03402", "split": "train", "clip_key": "2020-0131-103016_073480_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "073480"}, "frames": ["2020-0131-103016_073480_movie_t-3.jpg", "2020-0131-103016_073480_movie_t-2.jpg", "2020-0131-103016_073480_movie_t-1.jpg", "2020-0131-103016_073480_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three same-direction lanes runs through a business district, the pavement smooth and dry, and traffic moving at a moderate, steady pace toward an overpass. A silver kei van directly ahead in the center lane travels steadily and effectively sets the ego car's pace. In the left lane a small box truck slightly ahead continues straight alongside without signaling or changing speed. In the right lane a larger white box truck ahead drives away from the ego car as the flow in front moves forward, opening its gap. Pedestrians stay on the sidewalk behind guardrails, and no unusual signs, work zones, or hazards are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03403", "split": "train", "clip_key": "titan_clip_1311_000090_movie", "source": {"subset": "titan", "scenario": "clip_1311", "frame": "000090"}, "frames": ["titan_clip_1311_000090_movie_t-3.jpg", "titan_clip_1311_000090_movie_t-2.jpg", "titan_clip_1311_000090_movie_t-1.jpg", "titan_clip_1311_000090_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow two-way urban residential street with a single lane each way and no median is shown; the pavement is smooth and traffic is very light with no vehicles moving ahead or oncoming. The ego vehicle proceeds along the left side. A pedestrian in a black shirt and gray skirt walks away from the ego car along the left edge of the roadway, staying near the curb and ahead of the vehicle, potentially near the travel lane. No other active road users appear. Parked bicycles and a scooter line both curbs, slightly constricting the available lane beside closely spaced houses.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and a gray skirt, walking on the left side of the road, away from the ego car. The pedestrian may step into the roadway unexpectedly, so the driver should manoeuvre carefully around them."}
{"id": "train_03404", "split": "train", "clip_key": "2020-0213-143552_084734_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "084734"}, "frames": ["2020-0213-143552_084734_movie_t-3.jpg", "2020-0213-143552_084734_movie_t-2.jpg", "2020-0213-143552_084734_movie_t-1.jpg", "2020-0213-143552_084734_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway stretches ahead with multiple same-direction lanes, a solid median to the left, and guardrails on both sides; the pavement is smooth and traffic is light with steady flow. A white box truck travels ahead in the ego lane at a constant speed and remains the primary vehicle influencing the view. Slightly farther ahead to the left, a white passenger car proceeds in the passing lane and gradually pulls away. Farther ahead to the right, a larger truck continues in the outer lane without drifting. No salient traffic signals, merges, or obstacles are visible.", "hazard_reasoning": "There are no visible obstacles, pedestrians, cyclists, or changes in traffic flow, indicating a clear and hazard-free driving environment. The driver can continue at the current speed while remaining attentive to any future changes."}
{"id": "train_03405", "split": "train", "clip_key": "titan_clip_1231_000588_movie", "source": {"subset": "titan", "scenario": "clip_1231", "frame": "000588"}, "frames": ["titan_clip_1231_000588_movie_t-3.jpg", "titan_clip_1231_000588_movie_t-2.jpg", "titan_clip_1231_000588_movie_t-1.jpg", "titan_clip_1231_000588_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "be aware of cyclist ahead", "environment_perception": "A narrow urban two-way street with no median climbs gently uphill, its worn pavement flanked by green edge strips and closely packed shopfronts; traffic is light and slow. Ahead on the right, a cyclist in a black T-shirt rides toward the ego vehicle along the curb, keeping to that side as pedestrians occupy the sidewalk and may push him toward the lane. Several pedestrians on both sides walk close to or within the green strip, some edging into the roadway and reducing clearance. Farther up the street, another cyclist travels away in the ego direction near the center, modestly constraining the pace. No traffic signals or posted speeds are clearly visible.", "hazard_reasoning": "There is a cyclist wearing a black t-shirt, cycling on the right side of the road, towards the ego car, because there are pedestrians on the sidewalk. The cyclist's proximity and direction could require timely driver attention to avoid a collision, so the driver should be aware of the cyclist's path."}
{"id": "train_03406", "split": "train", "clip_key": "2020-0228-150133_048032_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "048032"}, "frames": ["2020-0228-150133_048032_movie_t-3.jpg", "2020-0228-150133_048032_movie_t-2.jpg", "2020-0228-150133_048032_movie_t-1.jpg", "2020-0228-150133_048032_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth asphalt runs between mid-rise buildings, with two same-direction lanes on the left and oncoming lanes to the right beyond a striped painted median; traffic is heavy and mostly stop-and-go. A black sedan immediately ahead in the ego lane is stopped because congestion blocks the way, holding the ego vehicle at a standstill. To the left, a white compact car in the adjacent same-direction lane creeps forward alongside, edging past the queue and limiting space for lane changes. On the opposite side, a dark van approaches in the oncoming lane, separated by the median and not affecting the ego path. Overhead signals hang at the next intersection, their aspect not clearly visible.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The stopped vehicle poses a collision risk if the driver does not stop in time, so the driver must apply brakes and stop to maintain a safe distance."}
{"id": "train_03407", "split": "train", "clip_key": "2020-0220-102630_045449_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "045449"}, "frames": ["2020-0220-102630_045449_movie_t-3.jpg", "2020-0220-102630_045449_movie_t-2.jpg", "2020-0220-102630_045449_movie_t-1.jpg", "2020-0220-102630_045449_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs under an elevated structure with close columns and a fence on the right; the pavement looks fair and traffic is slow and mostly stopped. A silver box truck is stopped directly ahead in the ego lane, blocking the path and setting the pace. In the adjacent left lane, a green-tarp small truck sits alongside or creeps forward, limiting an easy merge around the blockage. Farther ahead in the left lane, another small truck edges forward with the queue. The tight clearance beside the columns and fence on the right narrows the ego lane.", "hazard_reasoning": "There is a silver truck stopped in the ego lane, in front of the ego car. The stopped vehicle blocks the lane and requires the driver to stop to avoid a collision."}
{"id": "train_03408", "split": "train", "clip_key": "titan_clip_808_000558_movie", "source": {"subset": "titan", "scenario": "clip_808", "frame": "000558"}, "frames": ["titan_clip_808_000558_movie_t-3.jpg", "titan_clip_808_000558_movie_t-2.jpg", "titan_clip_808_000558_movie_t-1.jpg", "titan_clip_808_000558_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban commercial street with a narrow two-way carriageway, single lane each direction, no median, and worn asphalt; vehicular traffic is light while pedestrian activity is high. Ahead at the zebra crossing, a pedestrian in a black shirt carrying a handbag crosses from the left toward the right across the ego lane. At the left curb by the crosswalk, several pedestrians wait and face the roadway, and they may step out after the crosser. On the right sidewalk, more pedestrians walk along the shops toward the corner without approaching the lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a handbag, and crossing the street, to the left side, ahead at the crosswalk. The driver should yield because she is entering the roadway at the crosswalk, creating a potential collision hazard."}
{"id": "train_03409", "split": "train", "clip_key": "2020-0218-103119_056876_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "056876"}, "frames": ["2020-0218-103119_056876_movie_t-3.jpg", "2020-0218-103119_056876_movie_t-2.jpg", "2020-0218-103119_056876_movie_t-1.jpg", "2020-0218-103119_056876_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street runs beneath an elevated expressway with two same-direction lanes; the pavement is good and traffic is slow and heavy. A white box truck directly ahead in the ego lane slows to a crawl and stops intermittently because congestion builds in front, fixing the ego car's pace. Farther ahead in the adjacent right lane, another large truck moves slowly and edges left toward the lane line, reducing available space beside the ego lane. A black SUV alongside on the right creeps forward past the ego vehicle, limiting opportunities to merge right. Buildings and hedges line the left curb, and the right lane appears partially queued.", "hazard_reasoning": "There is a white truck slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The slowing indicates buildup of traffic and reduced visibility, so the driver should slow down to maintain a safe distance under these conditions."}
{"id": "train_03410", "split": "train", "clip_key": "2020-0203-114632_078447_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "078447"}, "frames": ["2020-0203-114632_078447_movie_t-3.jpg", "2020-0203-114632_078447_movie_t-2.jpg", "2020-0203-114632_078447_movie_t-1.jpg", "2020-0203-114632_078447_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban two-way road with one lane per direction and a painted centerline extends ahead on smooth pavement, with light to moderate flow. A small white kei car travels ahead in the ego lane at a steady speed, setting the pace. A dark sedan approaches in the opposing lane to the right and continues straight past. A van is parked on the left side of the road near the curb, as noted, forming a roadside obstruction. Overhead traffic lights mark a crosswalk at the intersection ahead.", "hazard_reasoning": "There is a purple van parked on the left side of the road. The parked vehicle narrows the drivable space and may force the driver to adjust speed and position to avoid a collision, so the driver should follow the warning to manoeuvre safely."}
{"id": "train_03411", "split": "train", "clip_key": "titan_clip_1027_000342_movie", "source": {"subset": "titan", "scenario": "clip_1027", "frame": "000342"}, "frames": ["titan_clip_1027_000342_movie_t-3.jpg", "titan_clip_1027_000342_movie_t-2.jpg", "titan_clip_1027_000342_movie_t-1.jpg", "titan_clip_1027_000342_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around parked van.", "environment_perception": "A narrow two-way urban street with one lane each direction runs between low-rise shops and apartments, the pavement patched and slightly uneven, and traffic is light. Near the left front of the ego lane, a person pushes a bright green handcart across from left to right, moving slowly and briefly blocking the path. A white van is parked on the left side of the road, reducing the usable width beside it and requiring attention as the ego passes. Farther ahead, another white van travels toward the camera in the oncoming lane, continuing straight and remaining in its lane. Scooters and storefront planters line the right curb as static obstacles.", "hazard_reasoning": "There is a white van parked on the left side of the road. Driver should carefully manoeuvre around the parked van to maintain safe clearance and avoid collision."}
{"id": "train_03412", "split": "train", "clip_key": "2020-0213-143552_010993_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "010993"}, "frames": ["2020-0213-143552_010993_movie_t-3.jpg", "2020-0213-143552_010993_movie_t-2.jpg", "2020-0213-143552_010993_movie_t-1.jpg", "2020-0213-143552_010993_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around parked van", "environment_perception": "An urban two-way road with one lane each direction and no median runs between midrise buildings; the red asphalt looks smooth and traffic is moderate with steady oncoming flow. Ahead on the left curb, a white van is parked partly in the ego lane because there is no parking lane, narrowing the path. Just beyond it, a small light truck in the ego lane moves slowly as it threads past the obstruction, constraining the ego vehicle's pace. In the opposite lane to the right, a silver car followed by a white van approaches straight through the narrowing.", "hazard_reasoning": "There is a white van parked on the left side of the road in the ego-lane, because there is no parking lane. This parked vehicle occupies the driving lane, so the driver should manoeuvre carefully around it to avoid a collision."}
{"id": "train_03413", "split": "train", "clip_key": "2020-0210-155354_047275_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "047275"}, "frames": ["2020-0210-155354_047275_movie_t-3.jpg", "2020-0210-155354_047275_movie_t-2.jpg", "2020-0210-155354_047275_movie_t-1.jpg", "2020-0210-155354_047275_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multilane arterial with smooth pavement and curbside railings carries heavy, slow traffic toward an intersection beneath overhead signs; all visible lanes run in the same direction. A gray kei van directly ahead in the ego lane is stopped or inching in the queue, constraining the ego vehicle. In the adjacent right lane, a black sedan slightly ahead creeps forward alongside. Farther ahead in the center lane, a white van slows with the pack and maintains a gap. Overhead gantry signs indicate lane directions for through and right movements.", "hazard_reasoning": "There is a gray van stopped in the ego lane, away from the ego car. The stopped van directly ahead creates a risk of collision, so the driver should stop immediately to avoid a rear-end crash."}
{"id": "train_03414", "split": "train", "clip_key": "2020-0127-132751_090018_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "090018"}, "frames": ["2020-0127-132751_090018_movie_t-3.jpg", "2020-0127-132751_090018_movie_t-2.jpg", "2020-0127-132751_090018_movie_t-1.jpg", "2020-0127-132751_090018_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane undivided road with a dashed center line and dry, intact pavement runs alongside a hedge and a fence, and the ego direction is briefly stopped while oncoming flow is light. A blue truck directly ahead in the ego lane is stationary because congestion ahead halts it, blocking the ego car's path. An oncoming black minivan travels steadily in the opposite lane to the right and continues past without encroaching. A pedestrian farther ahead on the right sidewalk walks away along the fence and remains off the roadway.", "hazard_reasoning": "There is a blue truck stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to prevent a rear-end collision with the halted truck."}
{"id": "train_03415", "split": "train", "clip_key": "2020-0217-110854_068029_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "068029"}, "frames": ["2020-0217-110854_068029_movie_t-3.jpg", "2020-0217-110854_068029_movie_t-2.jpg", "2020-0217-110854_068029_movie_t-1.jpg", "2020-0217-110854_068029_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with a single left-side lane for the ego vehicle runs beneath a pedestrian overpass; the pavement appears damp but sound, and traffic flows at a moderate pace. A white truck ahead in the ego lane drives away from the ego car, moving steadily and setting the pace. To the right, an oncoming white SUV approaches in its lane and passes under the overpass without crossing the chevron-marked buffer between directions. Farther right, another oncoming car follows in the same stream at a similar speed, remaining separate from the ego path. Bicycles line the left sidewalk behind a guardrail, and no signals are visible.", "hazard_reasoning": "There is a white truck in the ego lane, driving away from the ego car. The driver should follow the vehicle ahead and maintain a safe distance in case it suddenly slows down."}
{"id": "train_03416", "split": "train", "clip_key": "2020-0225-145150_030822_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "030822"}, "frames": ["2020-0225-145150_030822_movie_t-3.jpg", "2020-0225-145150_030822_movie_t-2.jpg", "2020-0225-145150_030822_movie_t-1.jpg", "2020-0225-145150_030822_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road with two lanes per direction and a painted median runs through a commercial district, the asphalt smooth and traffic moderate, bunching near a wide intersection with zebra crossings. A blue truck directly ahead in the ego lane slows and rolls toward the crosswalk because of congestion ahead, constraining the ego vehicle's pace. On the opposite side, a silver microvan and several cars approach in the right-side oncoming lanes, continuing straight and remaining separated by the median. A few pedestrians stand on the sidewalks near the crosswalks, waiting and not entering the roadway.", "hazard_reasoning": "There is a blue truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the congested traffic ahead."}
{"id": "train_03417", "split": "train", "clip_key": "titan_clip_87_000516_movie", "source": {"subset": "titan", "scenario": "clip_87", "frame": "000516"}, "frames": ["titan_clip_87_000516_movie_t-3.jpg", "titan_clip_87_000516_movie_t-2.jpg", "titan_clip_87_000516_movie_t-1.jpg", "titan_clip_87_000516_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane street without a median runs between tall buildings, the pavement smooth and traffic light near a small unsignalized intersection. A pedestrian on the left foreground walks across the crosswalk directly in front of the ego vehicle from left to right, closely occupying the ego lane and limiting progress. Another person on the right pushes a blue hand cart with boxes across from right to left, entering the ego lane and further blocking the path. Farther ahead in the same-direction left lane, a white van slows near the intersection, likely responding to the crossing activity. No traffic signal is visible, and oncoming traffic in the right lane appears sparse.", "hazard_reasoning": "The dark sedan is parked along the curb near the intersection, which may obstruct the lane or have doors opened into traffic. The driver should be alert for any sudden obstructions or pedestrians stepping into the road."}
{"id": "train_03418", "split": "train", "clip_key": "2020-0228-102841_018064_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "018064"}, "frames": ["2020-0228-102841_018064_movie_t-3.jpg", "2020-0228-102841_018064_movie_t-2.jpg", "2020-0228-102841_018064_movie_t-1.jpg", "2020-0228-102841_018064_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of lane-changing vehicle", "environment_perception": "An urban multi-lane arterial with left-hand traffic carries the car toward a wide signalized intersection, the pavement smooth and the lanes divided only by paint; traffic is moderate and moving steadily. Ahead in the ego lane, a black hatchback changes right into the adjacent lane in front of the ego car. Farther ahead in the right lane, a white van proceeds straight through the junction at a similar pace. Near the left edge close to the camera, a white sedan advances in the outer left lane and pulls slightly ahead while remaining outside the ego path. Overhead traffic lights show green for the approach.", "hazard_reasoning": "There is a black hatchback changing lane from the ego lane to the right lane, in front of the ego car. The hatchback's merge into your lane may force you to adjust speed or steer to maintain a safe distance and avoid a collision."}
{"id": "train_03419", "split": "train", "clip_key": "2020-0204-103442_040744_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "040744"}, "frames": ["2020-0204-103442_040744_movie_t-3.jpg", "2020-0204-103442_040744_movie_t-2.jpg", "2020-0204-103442_040744_movie_t-1.jpg", "2020-0204-103442_040744_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban road runs under an elevated structure with two lanes in the same direction and a guardrail on the right; the pavement is dry and traffic is heavy and slow. A white highway bus is immediately ahead in the ego lane, stopped in front of the ego car and holding the ego vehicle. In the left adjacent lane, a large box truck runs alongside and is stopped or barely moving beside the bus, narrowing gaps. On the right, the nose of a white passenger car sits slightly ahead in the neighboring lane and inches forward next to the bus's rear, limiting the ego vehicle's chance to change lanes. No traffic signals are visible.", "hazard_reasoning": "There is a white bus stopped in the ego lane, in front of the ego car. Drivers should stop to avoid a rear-end collision with the stationary bus ahead."}
{"id": "train_03420", "split": "train", "clip_key": "2020-0204-150838_009980_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_009980_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_009980_movie_t-3_augB1.jpg", "2020-0204-150838_009980_movie_t-2_augB1.jpg", "2020-0204-150838_009980_movie_t-1_augB1.jpg", "2020-0204-150838_009980_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with two lanes in the ego direction and oncoming lanes to the right runs past a sidewalk on the left; the pavement is smooth and dry, and traffic is heavy, bunching near an upcoming junction. Ahead in the ego lane, a black sedan slows with brake lights because of congestion, constraining the ego vehicle's pace. To the right, a silver van in the adjacent same-direction lane creeps forward alongside, limiting chances to merge. Farther ahead, multiple cars and vans queue across both lanes, some stopping as the line compresses. A 40 speed limit sign is visible on the left.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision in the congested traffic."}
{"id": "train_03421", "split": "train", "clip_key": "2020-0203-154554_029139_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_029139_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_029139_movie_t-3_augB1.jpg", "2020-0203-154554_029139_movie_t-2_augB1.jpg", "2020-0203-154554_029139_movie_t-1_augB1.jpg", "2020-0203-154554_029139_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs between tall buildings and under an elevated roadway, with smooth dry pavement and heavy, slow-moving traffic. A white semi-truck with a low-bed trailer is directly ahead in the ego lane, slowing due to congestion ahead and constraining the ego vehicle's pace. To the left, a white kei van travels alongside at low speed slightly ahead, maintaining its lane. On the right, another white van moves forward in the adjacent lane and gradually passes the ego vehicle and the truck.", "hazard_reasoning": "A white semi-truck slowing down in front of the ego car, in the ego lane, due to traffic congestion ahead. The truck's reduced speed indicates a queue ahead, so the driver should slow down to maintain a safe following distance and avoid sudden braking."}
{"id": "train_03422", "split": "train", "clip_key": "2020-0217-110854_027901_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "027901"}, "frames": ["2020-0217-110854_027901_movie_t-3.jpg", "2020-0217-110854_027901_movie_t-2.jpg", "2020-0217-110854_027901_movie_t-1.jpg", "2020-0217-110854_027901_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane roadway curves right between a concrete wall on the left and a guardrail on the right, with smooth pavement and light-to-moderate, gradually accelerating traffic. An orange and white airport limousine bus is directly ahead in the ego lane and accelerates away, opening distance from the camera car. A black minivan runs slightly ahead in the adjacent left lane at a steady speed and remains in its lane without merging. Chevron boards on both sides mark the right-hand curve, and no pedestrians or cyclists are visible.", "hazard_reasoning": "There is an orange and white bus accelerating in the ego lane, away from the ego car. Its acceleration may create a gap that other vehicles could merge into, potentially cutting in ahead of you, so maintain awareness and follow the vehicle ahead to stay safely positioned."}
{"id": "train_03423", "split": "train", "clip_key": "2020-0204-150838_073288_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "073288"}, "frames": ["2020-0204-150838_073288_movie_t-3.jpg", "2020-0204-150838_073288_movie_t-2.jpg", "2020-0204-150838_073288_movie_t-1.jpg", "2020-0204-150838_073288_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with two same-direction lanes runs slightly uphill, bounded by concrete side walls and lined with tall lampposts; the asphalt looks smooth and traffic is light. A tall truck is ahead in the ego lane moving steadily near the crest, effectively setting the ego vehicle's pace. Farther ahead in the right lane, a small car proceeds in the same direction and gradually pulls away without affecting the ego path. No signals or posted speed signs are visible, and there are no pedestrians, bicycles, or work zones; the view remains clear under an overcast sky.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03424", "split": "train", "clip_key": "titan_clip_907_000318_movie", "source": {"subset": "titan", "scenario": "clip_907", "frame": "000318"}, "frames": ["titan_clip_907_000318_movie_t-3.jpg", "titan_clip_907_000318_movie_t-2.jpg", "titan_clip_907_000318_movie_t-1.jpg", "titan_clip_907_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on left side.", "environment_perception": "An urban street with midrise buildings is under construction, with orange netting and green barriers on the right that narrow the carriageway to a single usable lane on worn, puddled pavement. Traffic is light with no moving vehicles ahead or oncoming. Ahead in the center of the lane, several pedestrians walk away from the camera within the travel path, limiting speed. On the left beside a parked work truck, a person in a blue shirt stands attending the vehicle and may step into the lane. A construction worker carrying a baton walks along the left edge near the truck, partially intruding into the lane.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, standing on the left side of the road, because they are attending their vehicle. The driver should be aware of this pedestrian as they may step or move unpredictably into the travel lane."}
{"id": "train_03425", "split": "train", "clip_key": "titan_clip_191_000306_movie", "source": {"subset": "titan", "scenario": "clip_191", "frame": "000306"}, "frames": ["titan_clip_191_000306_movie_t-3.jpg", "titan_clip_191_000306_movie_t-2.jpg", "titan_clip_191_000306_movie_t-1.jpg", "titan_clip_191_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban back street with no center line runs between tall buildings, the single narrow roadway in good condition and traffic light. Parked cars and bicycles line the right edge, leaving a tight passage. Ahead on the right a pedestrian in a brown shirt and blue jeans, carrying a camera case, walks in the ego lane after maneuvering around a parked car, occupying the path and slowing the approach. Farther ahead a white van in the same direction waits near the middle of the lane, potentially constraining space as the road narrows. No signals or signs are prominent.", "hazard_reasoning": "There is a male pedestrian, wearing a brown shirt, blue jeans, running shoes and carrying a camera case, who is walking in the ego lane on the right hand side, as has had to maneuver around a parked car. The driver should carefully manoeuvre around the pedestrian in the lane to avoid a potential collision."}
{"id": "train_03426", "split": "train", "clip_key": "titan_clip_1009_000582_movie", "source": {"subset": "titan", "scenario": "clip_1009", "frame": "000582"}, "frames": ["titan_clip_1009_000582_movie_t-3.jpg", "titan_clip_1009_000582_movie_t-2.jpg", "titan_clip_1009_000582_movie_t-1.jpg", "titan_clip_1009_000582_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial street with a narrow unmarked carriageway, no median, and smooth pavement shows light traffic as the car approaches a zebra crossing at an intersection. On the left ahead, a woman in a striped T-shirt and white pants carrying a handbag and an umbrella walks away from the ego vehicle along the curb, near the roadway edge. On the right, a man by a building entrance walks toward the intersection beside the roadway and could step toward the lane at a driveway. Far ahead at the cross street, a yellow car passes leftward through the intersection across the ego vehicle's path.", "hazard_reasoning": "There is a woman in a striped t-shirt and white pants, carrying a handbag and an umbrella and walking on the left side of the road, away from the ego car. The pedestrian could unpredictably enter the vehicle's path, so the driver should manoeuvre carefully around the pedestrian."}
{"id": "train_03427", "split": "train", "clip_key": "2020-0207-101955_000697_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "000697"}, "frames": ["2020-0207-101955_000697_movie_t-3.jpg", "2020-0207-101955_000697_movie_t-2.jpg", "2020-0207-101955_000697_movie_t-1.jpg", "2020-0207-101955_000697_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to the vehicle stopped ahead", "environment_perception": "In a dense urban area, the ego vehicle waits at a signalized intersection on a multi-lane two-way road with a low guardrail and shrubs dividing oncoming traffic to the right; the pavement is dry and traffic is heavy and stationary. A black hatchback directly ahead in the ego lane is stopped as the intersection's signal flashes red, holding the ego car. In the lane to the left, a white box truck waits nearly parallel to the hatchback, limiting room to maneuver. On the right at the crosswalk, a large group of pedestrians stands behind the curb, poised to cross when the signal changes.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego-car, in the ego lane, because of the flashing red traffic light ahead at the intersection. The driver must yield to the stopped vehicle to avoid a collision as traffic ahead is halted by the red light."}
{"id": "train_03428", "split": "train", "clip_key": "2020-0220-102630_078560_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "078560"}, "frames": ["2020-0220-102630_078560_movie_t-3.jpg", "2020-0220-102630_078560_movie_t-2.jpg", "2020-0220-102630_078560_movie_t-1.jpg", "2020-0220-102630_078560_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down and maintain a safe distance.", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings, separated from oncoming lanes by a metal median barrier. The pavement is dry and smooth, and traffic is moderate to heavy with a slow-moving queue ahead. A white van directly ahead in the ego lane slows because of traffic congestion, constraining the ego vehicle's speed. In the adjacent right lane, a beige van slightly ahead continues at a steadier pace and overtakes, narrowing the gap and discouraging a rightward lane change. Farther ahead, multiple cars bunch near the distant intersection, edging forward and creating the downstream bottleneck.", "hazard_reasoning": "A white van is slowing in front of the ego car in the ego lane, because of traffic congestion. Slow down to maintain a safe distance due to the congestion."}
{"id": "train_03429", "split": "train", "clip_key": "2020-0207-101955_012953_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "012953"}, "frames": ["2020-0207-101955_012953_movie_t-3.jpg", "2020-0207-101955_012953_movie_t-2.jpg", "2020-0207-101955_012953_movie_t-1.jpg", "2020-0207-101955_012953_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with two same-direction lanes is divided from oncoming lanes by a low median of raised markers; the pavement is smooth and traffic flows at a moderate, steady pace. A small green canvas-top truck is ahead in the ego lane and continues pulling away under a green light, loosely setting the pace. A large silver box truck travels in the adjacent right same-direction lane and edges forward without merging. Across the median, several cars approach in the oncoming lanes and pass by without interacting with the ego vehicle.", "hazard_reasoning": "There is a green truck driving in the ego lane, away from the ego car, because there is a green traffic light. To maintain safe spacing and ensure proper response if the signal changes, the driver should follow the vehicle ahead."}
{"id": "train_03430", "split": "train", "clip_key": "2020-0131-135401_063135_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "063135"}, "frames": ["2020-0131-135401_063135_movie_t-3.jpg", "2020-0131-135401_063135_movie_t-2.jpg", "2020-0131-135401_063135_movie_t-1.jpg", "2020-0131-135401_063135_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes and good pavement runs between mid-rise buildings, with light to moderate traffic flowing toward a signalized intersection. A white van ahead in the ego lane drives away toward the junction, setting the pace for the ego vehicle. Slightly to the right, a dump truck in the adjacent lane continues straight and gradually pulls ahead, staying parallel without merging. Farther right, a white car proceeds in the outer lane toward the intersection, remaining separate from the ego path. Overhead traffic lights span the cross street, flexible posts create a short divider on the right, and a guardrail lines the left sidewalk.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03431", "split": "train", "clip_key": "2020-0210-155354_001387_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-155354_001387_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-155354_001387_movie_t-3_augB1.jpg", "2020-0210-155354_001387_movie_t-2_augB1.jpg", "2020-0210-155354_001387_movie_t-1_augB1.jpg", "2020-0210-155354_001387_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cart.", "environment_perception": "An urban commercial street with one lane in each direction and a dashed center line has smooth pavement, metal railings along both sidewalks, and moderate two-way flow. A white sedan ahead in the ego lane travels steadily and then eases speed, effectively setting our pace. An oncoming black minivan approaches in the right opposing lane and passes without deviation. On the left curbside, a pedestrian pushing a cart stands beside a small parked vehicle while unloading, close to the travel lane and potentially moving into it.", "hazard_reasoning": "There is a pedestrian pushing a cart and standing on the left side of the road, because he is unloading a parked vehicle. The pedestrian's proximity to moving traffic while handling the cart increases collision risk, so drivers should carefully manoeuvre around the cart to avoid an accident."}
{"id": "train_03432", "split": "train", "clip_key": "titan_clip_1037_000360_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1037_000360_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1037_000360_movie_t-3_augB1.jpg", "titan_clip_1037_000360_movie_t-2_augB1.jpg", "titan_clip_1037_000360_movie_t-1_augB1.jpg", "titan_clip_1037_000360_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with one narrow lane in each direction has smooth pavement and no median, and traffic is light with several vehicles parked along the curbs. Ahead in the ego lane, a group of pedestrians wearing black pants crosses from left to right midblock, moving directly through the vehicle's path and slowing the flow. A bicyclist rides ahead near the center of the lane, continuing away at a moderate pace and occupying the ego path. A white minivan just ahead in the same lane moves slowly near the crossing pedestrians. A small truck is parked along the left curb, narrowing the approach. No oncoming vehicles or traffic signals are salient in the scene.", "hazard_reasoning": "There is a group of pedestrians, wearing black pants, and crossing the street in the ego lane, from the left side of the road. The pedestrians are entering the vehicle's path, so you should slow down to avoid a potential collision."}
{"id": "train_03433", "split": "train", "clip_key": "2020-0226-140503_030730_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "030730"}, "frames": ["2020-0226-140503_030730_movie_t-3.jpg", "2020-0226-140503_030730_movie_t-2.jpg", "2020-0226-140503_030730_movie_t-1.jpg", "2020-0226-140503_030730_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane per direction and a painted gore on the right appears dry and in good condition, with traffic building into a slow queue ahead. A white SUV directly ahead in the ego lane slows because congestion forms farther up the road, controlling the ego vehicle's pace. A silver van slightly ahead to the left hugs the curb and moves slowly in the same direction, close to the SUV and leaving limited buffer in the lane. Oncoming cars travel steadily in the right lane toward the camera, including a white kei car near the gore, keeping opposing traffic continuous and close to the center line.", "hazard_reasoning": "The white SUV is slowing in front of the ego car in the ego lane because of traffic congestion ahead. The driver should slow down to maintain a safe following distance given the reduced speed of the vehicle ahead."}
{"id": "train_03434", "split": "train", "clip_key": "titan_clip_818_000138_movie", "source": {"subset": "titan", "scenario": "clip_818", "frame": "000138"}, "frames": ["titan_clip_818_000138_movie_t-3.jpg", "titan_clip_818_000138_movie_t-2.jpg", "titan_clip_818_000138_movie_t-1.jpg", "titan_clip_818_000138_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the bicycle", "environment_perception": "An urban backstreet with a single narrow carriageway and no centerline runs between buildings; the pavement is smooth with a large 30 marking, and traffic is light with no oncoming vehicles. A pedestrian ahead near the left edge walks away along the curb, reducing the available space in the ego lane. A gray van stands at the left curb just ahead, partly jutting into the lane and further narrowing the passage. On the right side, an orange bicycle is parked among other bikes by the sidewalk, remaining outside the travel lane. No traffic signals are visible.", "hazard_reasoning": "There is an orange bicycle parked on the right side of the road. The parked bicycle reduces the drivable space on the narrow street, so the driver should manoeuvre carefully around it to avoid contact."}
{"id": "train_03435", "split": "train", "clip_key": "2020-0131-135401_076667_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "076667"}, "frames": ["2020-0131-135401_076667_movie_t-3.jpg", "2020-0131-135401_076667_movie_t-2.jpg", "2020-0131-135401_076667_movie_t-1.jpg", "2020-0131-135401_076667_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with multiple lanes runs between mid-rise buildings, separated from oncoming traffic by a shrub median. The pavement is dry and intact, and traffic moves at a steady moderate pace. A white van ahead in the ego lane pulls away as the flow opens, matching the sense that traffic ahead is moving. A black hatchback slightly to the left in the adjacent lane continues straight at a similar speed, loosely pacing the ego vehicle and limiting an easy move left. Overhead traffic signals and guide signs are visible at a signalized intersection further down the road.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03436", "split": "train", "clip_key": "2020-0205-152530_046797_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "046797"}, "frames": ["2020-0205-152530_046797_movie_t-3.jpg", "2020-0205-152530_046797_movie_t-2.jpg", "2020-0205-152530_046797_movie_t-1.jpg", "2020-0205-152530_046797_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban multilane divided road with left-hand traffic runs between tall buildings, the carriageways split by a low hedge median; the pavement is smooth and traffic is moderate toward a signalized intersection ahead. A small white truck directly ahead in the ego lane slows to a stop, constraining the ego vehicle's pace. In the lane to the right, a black hatchback continues forward at a steady speed and moves past the slowing truck, offering a clearer adjacent flow. On the far right beyond the median, a white bus waits on a parallel side lane and remains separated from the main carriageway. Overhead blue guide signs indicate upcoming destinations.", "hazard_reasoning": "There is a white truck slowing to a stop in front of the ego car, in the ego lane. The driver should stop to avoid a rear-end collision with the decelerating truck."}
{"id": "train_03437", "split": "train", "clip_key": "2020-0228-150133_057504_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "057504"}, "frames": ["2020-0228-150133_057504_movie_t-3.jpg", "2020-0228-150133_057504_movie_t-2.jpg", "2020-0228-150133_057504_movie_t-1.jpg", "2020-0228-150133_057504_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy queued traffic at a signal that begins to clear; there is no center median visible, and a white guardrail lines the curbside. In the ego left lane, a gray sedan immediately ahead starts to move off as the light turns green, setting the pace for the ego vehicle. In the adjacent lane to the right, a white kei car alongside creeps forward in the same direction while remaining in its lane. Farther ahead in the right lane, a large bus proceeds through the intersection, keeping the overall flow slow as the queue unwinds. Overhead signals show green as vehicles gradually accelerate.", "hazard_reasoning": "There is a gray sedan starting to drive in the ego lane in front of the ego car, because the light has turned green. The vehicle ahead is initiating movement due to the green light, so you should start moving to maintain safe distance and merge smoothly into traffic."}
{"id": "train_03438", "split": "train", "clip_key": "2020-0220-151845_023822_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "023822"}, "frames": ["2020-0220-151845_023822_movie_t-3.jpg", "2020-0220-151845_023822_movie_t-2.jpg", "2020-0220-151845_023822_movie_t-1.jpg", "2020-0220-151845_023822_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear collision with the van", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway with dry, well-marked pavement and heavy stop-and-go traffic in the same direction. A black van is stopped directly ahead in the ego lane, blocking the path and setting the pace. To the left ahead, a small light truck with a covered bed queues in its lane at low speed, further reflecting the congestion. On the right, a light blue kei car slightly ahead of the ego vehicle creeps forward in the adjacent lane and remains alongside, while other right-lane cars, including a red hatchback farther ahead, are also slowed. No traffic signals or speed signs are clearly visible in the scene.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane. The driver should stop to avoid colliding with the stationary van."}
{"id": "train_03439", "split": "train", "clip_key": "2020-0228-102841_099920_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "099920"}, "frames": ["2020-0228-102841_099920_movie_t-3.jpg", "2020-0228-102841_099920_movie_t-2.jpg", "2020-0228-102841_099920_movie_t-1.jpg", "2020-0228-102841_099920_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the merging SUV", "environment_perception": "An urban three-lane arterial with a raised shrub median and smooth dry pavement shows light, steady traffic. Ahead in the middle lane, a black SUV changes left into the curb lane, moving away from the ego lane. A white kei van proceeds straight in the left lane a short distance ahead without affecting the ego vehicle. Oncoming traffic in the opposite carriageway, including a white van, moves past beyond the median. A cyclist rides along the left sidewalk behind a guardrail, remaining separated from the roadway.", "hazard_reasoning": "There is a black SUV changing lanes from the middle lane, to the left lane. This merging maneuver may reduce available space unexpectedly, so the driver should be alert for its intrusion."}
{"id": "train_03440", "split": "train", "clip_key": "2020-0210-101957_084604_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "084604"}, "frames": ["2020-0210-101957_084604_movie_t-3.jpg", "2020-0210-101957_084604_movie_t-2.jpg", "2020-0210-101957_084604_movie_t-1.jpg", "2020-0210-101957_084604_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane two-way street with no median and dry, well-kept asphalt carries light traffic as the ego car proceeds in the left lane past shops and side streets. A brown construction truck directly ahead in the ego lane slows and leads the pace of the ego vehicle. The oncoming lane is clear in the immediate view, with no vehicles close enough to affect the scene. A blue pedestrian crossing sign stands on the left near a zebra crossing, and short orange bollards line the left edge by a shop entrance.", "hazard_reasoning": "There is a brown truck slowing in front of the ego car, in the ego lane. The truck's reduced speed may force the driver to brake suddenly to maintain a safe following distance, so slowing down is necessary."}
{"id": "train_03441", "split": "train", "clip_key": "titan_clip_999_000210_movie", "source": {"subset": "titan", "scenario": "clip_999", "frame": "000210"}, "frames": ["titan_clip_999_000210_movie_t-3.jpg", "titan_clip_999_000210_movie_t-2.jpg", "titan_clip_999_000210_movie_t-1.jpg", "titan_clip_999_000210_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked truck carefully", "environment_perception": "An urban, narrow two-way street with buildings tight to the curb has a single lane in each direction and no median; the pavement is dry and intact, and traffic is light. A white truck is parked on the right side of the road just ahead, narrowing the lane. A cyclist rides ahead near the center, moving away toward the truck and reducing clearance in the ego path. Farther ahead, a white van approaches as oncoming traffic along the opposite side. Several scooters and bicycles are parked along the right curb, adding roadside clutter.", "hazard_reasoning": "There is a white truck parked on the right side of the road. The truck partially blocks the travel lane, reducing available space and limiting visibility, so the driver should manoeuvre around it carefully."}
{"id": "train_03442", "split": "train", "clip_key": "titan_clip_905_000186_movie", "source": {"subset": "titan", "scenario": "clip_905", "frame": "000186"}, "frames": ["titan_clip_905_000186_movie_t-3.jpg", "titan_clip_905_000186_movie_t-2.jpg", "titan_clip_905_000186_movie_t-1.jpg", "titan_clip_905_000186_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban residential two-way street with narrow lanes and no median runs straight toward a railway level crossing; the pavement is smooth and traffic is light. A small white van ahead in the ego lane travels away toward the crossing. A cyclist wearing a cap rides along the left edge ahead, moving away from the ego-vehicle on the left side of the road and staying near the curb with limited clearance. The crossing's gates are raised and the signal masts are visible ahead, while stacked materials on the right narrow the shoulder.", "hazard_reasoning": "There is a cyclist wearing a cap and cycling, on the left side of the road, away from the ego-car. The driver should carefully manoeuvre around the cyclist to avoid potential collision and ensure safe passage."}
{"id": "train_03443", "split": "train", "clip_key": "2020-0203-114632_082396_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "082396"}, "frames": ["2020-0203-114632_082396_movie_t-3.jpg", "2020-0203-114632_082396_movie_t-2.jpg", "2020-0203-114632_082396_movie_t-1.jpg", "2020-0203-114632_082396_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for the red light ahead", "environment_perception": "An urban road under an elevated expressway approaches a signalized intersection, with a single lane in the ego direction, smooth pavement, and light traffic paused for the red. A gray hatchback directly ahead in the ego lane is stopped at the line because the light shows red, holding the ego vehicle. A white van waits on the left side street near the corner, positioned to turn into the main road and potentially enter ahead when the signal changes. The overhead signal facing the ego is clearly red.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car, in the ego lane, because of a red light. The driver must stop to comply with the red signal and avoid a rear-end collision."}
{"id": "train_03444", "split": "train", "clip_key": "2020-0204-150838_033235_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "033235"}, "frames": ["2020-0204-150838_033235_movie_t-3.jpg", "2020-0204-150838_033235_movie_t-2.jpg", "2020-0204-150838_033235_movie_t-1.jpg", "2020-0204-150838_033235_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "A dense urban commercial corridor with tall buildings lines a multi-lane two-way arterial marked by painted centerlines and no physical median; the dry pavement hosts heavy, stop-and-go traffic. A white van directly ahead in the ego lane is stopped with brake lights on because of congestion, holding the ego vehicle in place. To the left, a black taxi in the adjacent same-direction lane inches forward alongside, matching the crawl and remaining parallel to the ego lane. On the right, another white van in the neighboring same-direction lane creeps past the ego car, creating close lateral traffic as the queue compresses.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid colliding with the halted vehicle ahead, ensuring a safe following distance under congested conditions."}
{"id": "train_03445", "split": "train", "clip_key": "titan_clip_1034_000444_movie", "source": {"subset": "titan", "scenario": "clip_1034", "frame": "000444"}, "frames": ["titan_clip_1034_000444_movie_t-3.jpg", "titan_clip_1034_000444_movie_t-2.jpg", "titan_clip_1034_000444_movie_t-1.jpg", "titan_clip_1034_000444_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban commercial alley with block paving forms a narrow undivided roadway that curves gently ahead; traffic is light and slow-moving. A white van ahead in the same direction proceeds straight away toward the bend, loosely setting the pace. On the left edge, a pedestrian in black pants and a cap walks away from the ego car along the storefronts, staying near the roadway edge and potentially edging into the lane. Several other pedestrians are in the carriageway: one near the center-left walks toward the ego vehicle, while others step out from the right side and move diagonally toward the middle, so they may enter the ego lane.", "hazard_reasoning": "There is a pedestrian wearing black pants and a cap, walking along the left side of the road, away from the ego car. The driver should slow down to anticipate any sudden crossing or change in walking direction."}
{"id": "train_03446", "split": "train", "clip_key": "titan_clip_1352_000552_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1352_000552_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1352_000552_movie_t-3_augB1.jpg", "titan_clip_1352_000552_movie_t-2_augB1.jpg", "titan_clip_1352_000552_movie_t-1_augB1.jpg", "titan_clip_1352_000552_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to cyclist crossing ahead.", "environment_perception": "An urban residential scene shows a narrow two-way road without a centerline, climbing slightly and bending right, bordered by guardrails; the wet pavement points to recent rain and traffic is light. Ahead on the left near a small side street, a cyclist wearing a black shirt rides across the roadway away from the ego-car toward the side street, briefly entering the ego lane. Farther ahead at the left corner by the wall, another cyclist is stopped with a foot down beside the curb, not moving into the lane. No traffic signals or speed signs are visible, and the rightward curve and walls create a partial blind approach.", "hazard_reasoning": "There is a cyclist wearing a black shirt and crossing the street, on the left side of the intersection, away from the ego-car. Because the cyclist is crossing ahead on the left side, the driver should yield to avoid a collision."}
{"id": "train_03447", "split": "train", "clip_key": "titan_clip_1051_000060_movie", "source": {"subset": "titan", "scenario": "clip_1051", "frame": "000060"}, "frames": ["titan_clip_1051_000060_movie_t-3.jpg", "titan_clip_1051_000060_movie_t-2.jpg", "titan_clip_1051_000060_movie_t-1.jpg", "titan_clip_1051_000060_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian ahead", "environment_perception": "A narrow two-way urban street with no median runs between buildings, the asphalt dry and slightly worn, and overall traffic is light. On the right, a pedestrian wearing a yellow T-shirt walks along the road edge toward the sidewalk, close to the ego lane. Ahead near the left curb, a white van stands stopped, narrowing the path in the ego vehicle's direction. Farther ahead, several pedestrians cross the street, which may constrain the car's pace. A bicycle with a basket is parked at the right curb and more parked cars line the left side.", "hazard_reasoning": "A pedestrian wearing a yellow t-shirt is walking on the right side of the road, toward the sidewalk. The pedestrian could enter the vehicle's path unexpectedly, so the driver should maintain awareness and react accordingly."}
{"id": "train_03448", "split": "train", "clip_key": "2020-0214-145407_013375_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "013375"}, "frames": ["2020-0214-145407_013375_movie_t-3.jpg", "2020-0214-145407_013375_movie_t-2.jpg", "2020-0214-145407_013375_movie_t-1.jpg", "2020-0214-145407_013375_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection; the rightmost lane splits as a dedicated right-turn lane, the pavement is smooth, and traffic flows at a moderate pace. In the ego right-turn lane, a white van ahead slows to make the turn, temporarily dictating the ego car's pace. A silver minivan slightly ahead in the adjacent through lane continues straight at steady speed, remaining outside the ego path. Farther left, a larger boxy bus or truck moves straight with its lane's flow. Overhead signals display a green right-turn arrow, and pedestrians gather on the sidewalks near the corner without entering the roadway.", "hazard_reasoning": "There is a white van slowing down in the ego lane in front of the ego car, because it is turning right. You should slow down to maintain a safe following distance and avoid a rear-end collision as the van decelerates for its turn."}
{"id": "train_03449", "split": "train", "clip_key": "titan_clip_1233_000324_movie", "source": {"subset": "titan", "scenario": "clip_1233", "frame": "000324"}, "frames": ["titan_clip_1233_000324_movie_t-3.jpg", "titan_clip_1233_000324_movie_t-2.jpg", "titan_clip_1233_000324_movie_t-1.jpg", "titan_clip_1233_000324_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban back street with a single narrow lane climbs slightly uphill, with no center divider, rough patched asphalt, and green edge bands; traffic is light and vehicle movement is minimal. On the right side mid-distance, a man in a black T-shirt and brown pants walks toward the ego car along the edge and may step into the lane, limiting speed. Just left of him, another pedestrian also approaches toward the ego path and drifts slightly toward the center, reducing clearance. Farther ahead near the left edge, two pedestrians walk away uphill and stay by the curb. A white van is pulled into a right-side driveway, storefronts and bollards narrow the corridor, and no notable signals or speed signs are visible.", "hazard_reasoning": "There is a man wearing a black t-shirt and brown pants and walking on the right side of the road, toward the ego car. He may step into the roadway unexpectedly, so the driver should slow down to maintain safety."}
{"id": "train_03450", "split": "train", "clip_key": "titan_clip_844_000402_movie", "source": {"subset": "titan", "scenario": "clip_844", "frame": "000402"}, "frames": ["titan_clip_844_000402_movie_t-3.jpg", "titan_clip_844_000402_movie_t-2.jpg", "titan_clip_844_000402_movie_t-1.jpg", "titan_clip_844_000402_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A quiet urban residential street climbs uphill on a narrow two-way road with no centerline, bordered by walls and a white guardrail; the pavement is smooth and traffic is light with no vehicles visible. On the near right edge, a pedestrian walks toward the camera with a small dog on a leash along the curb, close to the travel lane and relevant to the ego's path. Far ahead in the lane center, a pedestrian in blue holds an animal and walks toward the right side of the road as they pick it up, briefly occupying the path. No notable signals or posted speeds are visible, and sight lines tighten near the hill crest.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and blue pants, holding an animal, walking in the middle of the road, toward the right side of the road, because they are picking up the animal. The pedestrian's unpredictable movements in the travel lane could lead to sudden obstruction, so the driver must manoeuvre carefully to avoid collision."}
{"id": "train_03451", "split": "train", "clip_key": "titan_clip_161_000438_movie", "source": {"subset": "titan", "scenario": "clip_161", "frame": "000438"}, "frames": ["titan_clip_161_000438_movie_t-3.jpg", "titan_clip_161_000438_movie_t-2.jpg", "titan_clip_161_000438_movie_t-1.jpg", "titan_clip_161_000438_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way street with one lane each direction has no median and smooth pavement; traffic is light with several vehicles parked along both curbs. On the left side of the ego lane, multiple delivery trucks are stopped at the curb, narrowing the lane. A pedestrian in a white shirt and black pants walks away from the ego vehicle along the left edge of the roadway beside the parked trucks, potentially stepping toward the travel lane. A box truck far ahead in the ego lane continues forward, and the ego follows its line through the narrowed gap. On the right, in the oncoming lane, a white mini-van is stopped near the curb, reducing space for opposing traffic but not entering the ego path.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and a black pants, walking on the left side of the road, away from the ego car. The driver should manoeuvre carefully around the pedestrian to avoid a potential collision in this confined space."}
{"id": "train_03452", "split": "train", "clip_key": "titan_clip_1132_000414_movie", "source": {"subset": "titan", "scenario": "clip_1132", "frame": "000414"}, "frames": ["titan_clip_1132_000414_movie_t-3.jpg", "titan_clip_1132_000414_movie_t-2.jpg", "titan_clip_1132_000414_movie_t-1.jpg", "titan_clip_1132_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban, alley-like one-lane road runs between a storefront building on the left and a high brick wall on the right; the asphalt is smooth, there is no divider, and motor traffic is absent so the space functions as a shared path. On the left edge ahead, a cluster of pedestrians stands and drifts into the lane, narrowing the available path and constraining the approach. Ahead near the center-left, a pedestrian in a black T-shirt walks a small dog toward the ego vehicle because the sidewalk is narrow, and they may step into the travel line. In the near left foreground, another person moves from the sidewalk toward the lane, about to pass in front of the ego path.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, walking a dog on the left side of the road, towards the ego car, because the sidewalk is narrow. The driver should stop to avoid colliding with the pedestrian who may step into the vehicle's path due to the narrow sidewalk and limited visibility around the curve."}
{"id": "train_03453", "split": "train", "clip_key": "2020-0218-103119_056555_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "056555"}, "frames": ["2020-0218-103119_056555_movie_t-3.jpg", "2020-0218-103119_056555_movie_t-2.jpg", "2020-0218-103119_056555_movie_t-1.jpg", "2020-0218-103119_056555_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs beneath an elevated expressway, with two same-direction lanes, a left curbside sidewalk, and dry, intact pavement; traffic is heavy and slow. A white box truck directly ahead in the ego lane slows in congestion, effectively setting the ego vehicle's pace. Another large truck is slightly ahead in the adjacent right lane, rolling slowly parallel to the ego path and limiting opportunities to pass. A black passenger car runs close alongside on the right, creeping forward and constraining lateral space. A guardrail borders the right edge while mid-rise buildings line the left, and no unusual hazards or signals are prominent.", "hazard_reasoning": "A white truck slowing down in the ego lane because of the traffic congestion ahead. Slow down to maintain a safe distance and avoid sudden braking when encountering the slowed traffic."}
{"id": "train_03454", "split": "train", "clip_key": "2020-0129-105040_058457_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "058457"}, "frames": ["2020-0129-105040_058457_movie_t-3.jpg", "2020-0129-105040_058457_movie_t-2.jpg", "2020-0129-105040_058457_movie_t-1.jpg", "2020-0129-105040_058457_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked vehicle", "environment_perception": "An urban residential street slopes gently downhill between apartment buildings, a very narrow two-way road with no median and smooth pavement; traffic is light with no moving vehicles visible. Two pedestrians are on the left sidewalk near the vending machines ahead, standing and walking slowly behind bollards so they do not enter the lane. No same-direction vehicle is ahead and no oncoming traffic appears in the opposite side. A dark car is parked on a raised lot to the right beyond a fence, and the roadway narrows between the buildings farther ahead.", "hazard_reasoning": "There is a black compact hatchback parked on the left side of the road in front of the ego car. It reduces the drivable space, so the driver should carefully manoeuvre around the parked vehicle to avoid collision."}
{"id": "train_03455", "split": "train", "clip_key": "2020-0131-103016_013033_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "013033"}, "frames": ["2020-0131-103016_013033_movie_t-3.jpg", "2020-0131-103016_013033_movie_t-2.jpg", "2020-0131-103016_013033_movie_t-1.jpg", "2020-0131-103016_013033_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of slowing vehicles ahead.", "environment_perception": "An urban multi-lane two-way street without a median runs between tall buildings, the pavement patched and uneven, and traffic is light to moderate. Ahead in the left lane, a black SUV slows because a white box truck further ahead is slowing, constraining the ego vehicle's pace. A small truck in the adjacent same-direction lane moves steadily past the queue. Oncoming vehicles, including a silver car and a light van, travel in the right-side lanes without interacting. Parked delivery trucks line the left curb near the camera, locally narrowing the lane.", "hazard_reasoning": "There is a black SUV slowing in the left lane, because of a truck slowing ahead. Be aware of this deceleration to maintain safe following distance and avoid sudden braking."}
{"id": "train_03456", "split": "train", "clip_key": "titan_clip_89_000102_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_89_000102_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_89_000102_movie_t-3_augB1.jpg", "titan_clip_89_000102_movie_t-2_augB1.jpg", "titan_clip_89_000102_movie_t-1_augB1.jpg", "titan_clip_89_000102_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of pedestrian ahead", "environment_perception": "An urban intersection with a two-lane road and no median comes into view, the pavement smooth and traffic light. A pedestrian wearing a white shirt and black pants walks along the left edge of the ego lane toward the camera, close to the curb and potentially encroaching on the lane. Farther ahead near the center crosswalk, another person walks across from left to right, moving into the path the ego vehicle would take if proceeding straight. On the right side of the intersection, a white minivan is stopped by the curb on the cross street and remains stationary without entering the lane. Blue pedestrian-crossing signs are visible near the corners, emphasizing the active crosswalks.", "hazard_reasoning": "A pedestrian wearing a white shirt and black pants is walking along the left side of the lane, toward the ego car. The driver should be aware of the pedestrian ahead to reduce speed and prevent an incident."}
{"id": "train_03457", "split": "train", "clip_key": "titan_clip_122_000174_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_122_000174_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_122_000174_movie_t-3_augB1.jpg", "titan_clip_122_000174_movie_t-2_augB1.jpg", "titan_clip_122_000174_movie_t-1_augB1.jpg", "titan_clip_122_000174_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian.", "environment_perception": "A narrow two-way urban street lined with midrise shops has no median or centerline, and the asphalt looks smooth; vehicle traffic is light while pedestrian activity is dense. A white microvan ahead in the ego lane rolls slowly near the center, setting the pace, and no oncoming vehicles are close. A pedestrian wearing a brown shirt steps from the right sidewalk and crosses mid-block toward the left in the middle of the road, entering the path ahead. Several other pedestrians walk along the right sidewalk close to the curb, with one pausing near the edge and possibly entering the lane. Scaffolding and cones on the left occupy the sidewalk but do not narrow the carriageway.", "hazard_reasoning": "There is a pedestrian wearing a brown shirt, crossing the street in the middle of the road, from the right side to the left side. The pedestrian is crossing mid-block, so the driver must yield to avoid a collision."}
{"id": "train_03458", "split": "train", "clip_key": "titan_clip_51_000216_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_51_000216_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_51_000216_movie_t-3_augB1.jpg", "titan_clip_51_000216_movie_t-2_augB1.jpg", "titan_clip_51_000216_movie_t-1_augB1.jpg", "titan_clip_51_000216_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the worker", "environment_perception": "An urban residential street with a narrow two-way carriageway and no median runs between close buildings; the pavement looks smooth and traffic is light, but the lane narrows at a roadside work zone ahead. A construction worker holding an orange baton stands ahead slightly left in the ego lane, directing traffic passing through and indicating that vehicles may need to stop or proceed slowly. A large construction truck with a crane is stopped just ahead, occupying much of the left side and constraining the ego vehicle's path. Another worker stands by bicycles on the far left, attending the site without entering the lane. A white van is parked along the right curb, further reducing clearance.", "hazard_reasoning": "There is a construction worker holding an orange baton and standing on the left side of the road, because he is controlling traffic passing through. The worker and the partial lane obstruction require the driver to manoeuvre carefully to avoid collision and maintain safety."}
{"id": "train_03459", "split": "train", "clip_key": "titan_clip_1006_000546_movie", "source": {"subset": "titan", "scenario": "clip_1006", "frame": "000546"}, "frames": ["titan_clip_1006_000546_movie_t-3.jpg", "titan_clip_1006_000546_movie_t-2.jpg", "titan_clip_1006_000546_movie_t-1.jpg", "titan_clip_1006_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with a single lane and brick pavement runs between a glass building and a construction wall; there is no median and traffic is light as the car approaches a crosswalk at an unsignalized intersection. A pedestrian in a white dress carrying a handbag walks ahead along the left edge away from the vehicle, keeping clear because a white van is parked on the left and partly intrudes into the lane. Two pedestrians on the right edge walk toward the camera beside the construction hoarding, close to but outside the vehicle's path. A small white truck is stopped across the far intersection, and cones line the work zone on the right, tightening the available lane.", "hazard_reasoning": "There's a pedestrian carrying a handbag, wearing a white dress, walking on the left side of the road, away from the ego car because of the parked vehicle. The pedestrian is close to the travel lane and may unexpectedly step into the vehicle's path, so the driver should slow down to maintain safety."}
{"id": "train_03460", "split": "train", "clip_key": "2020-0207-101955_012415_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "012415"}, "frames": ["2020-0207-101955_012415_movie_t-3.jpg", "2020-0207-101955_012415_movie_t-2.jpg", "2020-0207-101955_012415_movie_t-1.jpg", "2020-0207-101955_012415_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth asphalt and no median carries moderate two-way traffic toward a signalized intersection with zebra crossings. On the far right side of the roadway, oncoming vehicles flow in their own lanes. Directly ahead in the ego lane, a white truck drives away from the ego car at a steady pace, leading the lane and setting the pace. In the adjacent right lane, a dark van moves slightly ahead and continues straight, blocking an immediate right merge. At the left corner beside the crosswalk, several pedestrians wait at the curb, remaining clear of the road. Overhead traffic signals govern the junction, though their aspects are not clearly visible.", "hazard_reasoning": "There is a white truck driving in front of, and away from the ego car, in the ego lane. The truck ahead may brake suddenly, so you should follow the vehicle ahead to maintain a safe distance and be prepared to stop."}
{"id": "train_03461", "split": "train", "clip_key": "2020-0210-101957_066194_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "066194"}, "frames": ["2020-0210-101957_066194_movie_t-3.jpg", "2020-0210-101957_066194_movie_t-2.jpg", "2020-0210-101957_066194_movie_t-1.jpg", "2020-0210-101957_066194_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the same direction runs between apartments and hedges; the pavement is sound and traffic is heavy, forming a slow queue. Ahead in the ego lane, a white truck is stopped because of congestion and blocks the ego vehicle. In the adjacent right lane slightly ahead, a white hatchback waits in the line, matching the slow pace and contributing to the queue. To the immediate right of the ego, a dark-colored sedan creeps forward alongside, limiting room for a lane change. An overhead blue direction sign is visible above the lanes, and no unusual obstacles or work zones appear.", "hazard_reasoning": "There is a white truck stopped in the ego lane because of traffic congestion ahead. The driver must stop to avoid colliding with the halted truck in their lane."}
{"id": "train_03462", "split": "train", "clip_key": "titan_clip_1224_000030_movie", "source": {"subset": "titan", "scenario": "clip_1224", "frame": "000030"}, "frames": ["titan_clip_1224_000030_movie_t-3.jpg", "titan_clip_1224_000030_movie_t-2.jpg", "titan_clip_1224_000030_movie_t-1.jpg", "titan_clip_1224_000030_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with smooth pavement and no median unfolds ahead, and traffic is light with no notable changes. A small white truck stands stopped ahead near the left curb in the ego lane, partially narrowing the lane and setting the pace. A green bicycle is parked at the left curb just in front of the ego car. Several pedestrians on the left sidewalk walk past storefronts near the curb but stay off the roadway. No oncoming vehicles are close, and the right corner shows a side street with bollards while the main roadway remains clear.", "hazard_reasoning": "There is a green bicycle parked on the left side of the road in front of the ego car. A parked bicycle on the roadway's side may reduce lateral clearance and require the driver to adjust speed to pass safely, so the driver should slow down to avoid a potential collision."}
{"id": "train_03463", "split": "train", "clip_key": "titan_clip_637_000120_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_637_000120_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_637_000120_movie_t-3_augB1.jpg", "titan_clip_637_000120_movie_t-2_augB1.jpg", "titan_clip_637_000120_movie_t-1_augB1.jpg", "titan_clip_637_000120_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban neighborhood street is a narrow two-way road with no median and smooth asphalt dotted with manhole covers; traffic is light with no moving vehicles nearby. A pedestrian in a striped shirt with a backpack walks toward the ego-vehicle along the right edge, moving off the shoulder because another person is on the right side, so he edges into the lane and may affect the ego path. Another pedestrian stands on the right shoulder near a parking-lot entrance, constricting space along the curb. On the left foreground, a man waits at the curb by a side street close to the travel way. Parked cars and signboards line the right, and buildings create a gentle right bend ahead.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt, carrying a backpack, and walking on the right side of the road, towards the ego-car, because of another pedestrian on the right shoulder. The pedestrian may step into the lane unexpectedly, so the driver should manoeuvre carefully around the pedestrian."}
{"id": "train_03464", "split": "train", "clip_key": "2020-0131-103016_011734_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "011734"}, "frames": ["2020-0131-103016_011734_movie_t-3.jpg", "2020-0131-103016_011734_movie_t-2.jpg", "2020-0131-103016_011734_movie_t-1.jpg", "2020-0131-103016_011734_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "be aware of the motorcycle ahead", "environment_perception": "An urban divided arterial with three lanes in the ego direction and a planted median on the left shows smooth pavement and moderate, slow-moving traffic. A black motorcycle rides directly ahead in the ego lane and continues straight at a steady pace, effectively setting the ego car's speed. Ahead left, a scooter travels in the adjacent lane near the curb and moves forward close to the lane line, where it may edge toward the ego lane. To the right, a white sedan runs parallel slightly ahead in its lane and holds its line without merging. Farther ahead, a large box truck amid mixed cars in the middle lanes rolls slowly and contributes to the general crawl.", "hazard_reasoning": "There is a black motorcycle driving in front of the ego car in the ego lane. The motorcycle could brake or maneuver suddenly, so the driver should be aware to maintain a safe following distance."}
{"id": "train_03465", "split": "train", "clip_key": "2020-0207-101955_118912_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "118912"}, "frames": ["2020-0207-101955_118912_movie_t-3.jpg", "2020-0207-101955_118912_movie_t-2.jpg", "2020-0207-101955_118912_movie_t-1.jpg", "2020-0207-101955_118912_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial runs under an elevated expressway, the pavement smooth, with heavy slow traffic in the same direction. A blue sedan directly ahead in the ego lane is stopped because of congestion, keeping the ego car halted. To the left, a black minivan slightly ahead in the adjacent lane creeps forward in the queue, limiting an immediate lane change. In the right lane, a white van alongside inches forward parallel to the ego, further boxing it in. Farther ahead, a large white box truck waits and partly blocks the view.", "hazard_reasoning": "There is a blue sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. You should stop to avoid colliding with the stationary vehicle due to the traffic slowdown."}
{"id": "train_03466", "split": "train", "clip_key": "titan_clip_370_000294_movie", "source": {"subset": "titan", "scenario": "clip_370", "frame": "000294"}, "frames": ["titan_clip_370_000294_movie_t-3.jpg", "titan_clip_370_000294_movie_t-2.jpg", "titan_clip_370_000294_movie_t-1.jpg", "titan_clip_370_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential scene unfolds on a narrow two-way road with no centerline and smooth asphalt, and traffic is light with no moving vehicles nearby. A silver van is parked along the left curb just ahead, protruding into the ego lane and constraining the passage. A pedestrian wearing a black T-shirt and brown pants walks on the left side toward the ego car to get around the parked van and edges into the roadway, which may enter the ego lane. No oncoming vehicles are visible along the straight segment ahead. A large \"止まれ\" (stop) marking is painted on the pavement before a small side junction, and an orange cone stands at the near right curb.", "hazard_reasoning": "There's a pedestrian wearing a black t-shirt and brown pants walking on the left side of the road toward the ego car because of the parked vehicle. The pedestrian may step into the roadway unexpectedly, so the driver should slow down to avoid a collision."}
{"id": "train_03467", "split": "train", "clip_key": "titan_clip_692_000462_movie", "source": {"subset": "titan", "scenario": "clip_692", "frame": "000462"}, "frames": ["titan_clip_692_000462_movie_t-3.jpg", "titan_clip_692_000462_movie_t-2.jpg", "titan_clip_692_000462_movie_t-1.jpg", "titan_clip_692_000462_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the merging hatchback", "environment_perception": "An urban multi-lane two-way street with no median and smooth pavement is shown, with moderate traffic approaching a wide intersection. The ego vehicle proceeds in the leftmost lane for its direction. Ahead, a white hatchback changes from the middle lane into the ego lane in front of the camera, easing left and slowing slightly, which may set the ego car's pace. On the near left curb, a white van is stopped with its sliding door open and a person standing beside it, encroaching on the lane and forming a roadside hazard. In the neighboring lanes ahead, a beige car and several other vehicles move slowly or turn at the intersection, remaining outside the ego path. Pedestrians are visible along the sidewalks.", "hazard_reasoning": "There is a white hatchback changing into the ego lane, in front of the ego car. The driver should yield because the vehicle is merging into the same lane, posing a potential collision risk if not given space."}
{"id": "train_03468", "split": "train", "clip_key": "2020-0220-151845_031285_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "031285"}, "frames": ["2020-0220-151845_031285_movie_t-3.jpg", "2020-0220-151845_031285_movie_t-2.jpg", "2020-0220-151845_031285_movie_t-1.jpg", "2020-0220-151845_031285_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial runs under an elevated structure with three same-direction lanes and smooth dry pavement; traffic is moderate and briefly bunches as vehicles maneuver around obstructions. Ahead-left, a white van merges right into the ego lane to bypass two stationary trucks in the left lane, moving into our path. Directly ahead in the ego lane, a flatbed truck with a covered load continues straight at a steady pace, constraining our speed. To the right, a black hatchback in the adjacent lane travels parallel slightly ahead, limiting space for a rightward lane change. The parked trucks on the left remain a localized hazard.", "hazard_reasoning": "There's a white van changing lanes from the left lane to the ego lane because of stationary vehicles in its lane. The driver should slow down to maintain space and allow the van to merge safely."}
{"id": "train_03469", "split": "train", "clip_key": "2020-0131-135401_000615_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-135401_000615_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-135401_000615_movie_t-3_augB1.jpg", "2020-0131-135401_000615_movie_t-2_augB1.jpg", "2020-0131-135401_000615_movie_t-1_augB1.jpg", "2020-0131-135401_000615_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each way runs straight between mid-rise buildings, divided by a yellow center line; the pavement is dry and intact, and traffic appears light to moderate. A white box truck ahead in the ego lane moves slowly and then further slows, constrained by congestion farther ahead. In the opposite lane, a white minivan approaches from ahead at a steady pace while staying within its lane. Pedestrians walk along the left sidewalk near the curb without stepping into the roadway, and several vehicles are parked along the curbs.", "hazard_reasoning": "There is a white truck slowing in the ego lane, away from the ego car, because of traffic congestion ahead. The ego-vehicle should reduce speed to maintain a safe following distance and adapt to the slowing traffic."}
{"id": "train_03470", "split": "train", "clip_key": "2020-0129-144857_064455_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "064455"}, "frames": ["2020-0129-144857_064455_movie_t-3.jpg", "2020-0129-144857_064455_movie_t-2.jpg", "2020-0129-144857_064455_movie_t-1.jpg", "2020-0129-144857_064455_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An elevated urban roadway with two same-direction lanes and metal guardrails runs straight on dry, well-marked pavement, and traffic is heavy with a slow-moving queue ahead. The ego car proceeds in the right lane. Directly ahead in the ego lane, a white sedan slows and creeps because congestion forms further forward, constraining the ego vehicle's pace. In the adjacent left lane, several large trucks, including a box truck just ahead-left, crawl in a line parallel to the ego lane with little change in position. Farther ahead, more trucks continue the queue in the left lane, and no signals or cross traffic are visible.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, because of traffic congestion ahead in the ego lane. The driver should slow down to maintain a safe following distance and adapt to the reduced traffic speed."}
{"id": "train_03471", "split": "train", "clip_key": "titan_clip_1001_000582_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1001_000582_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1001_000582_movie_t-3_augB1.jpg", "titan_clip_1001_000582_movie_t-2_augB1.jpg", "titan_clip_1001_000582_movie_t-1_augB1.jpg", "titan_clip_1001_000582_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban street with one narrow lane and no median has smooth, damp pavement and light traffic. A box truck is stopped ahead along the left edge of the ego lane, partly blocking the path and constraining the approach. A pedestrian wearing a black T-shirt and black pants comes from the left beside the truck and walks toward the right around the parked vehicle, potentially entering the ego lane. Far ahead, a few same-direction cars continue away without interaction. Bollards line the right sidewalk and landscaping borders the left, with no salient signals visible.", "hazard_reasoning": "There's a pedestrian wearing a black t-shirt, wearing black pants, walking on the left side of the road, towards the right, because of the parked vehicle. The pedestrian may step into the lane unexpectedly due to the truck obstruction, so the driver must adjust path to avoid collision."}
{"id": "train_03472", "split": "train", "clip_key": "titan_clip_1336_000102_movie", "source": {"subset": "titan", "scenario": "clip_1336", "frame": "000102"}, "frames": ["titan_clip_1336_000102_movie_t-3.jpg", "titan_clip_1336_000102_movie_t-2.jpg", "titan_clip_1336_000102_movie_t-1.jpg", "titan_clip_1336_000102_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street lined with shops has smooth pavement, no median, and very light vehicle traffic, with pedestrians dominating the scene. A pedestrian in a white shirt on the left side walks away from the ego car along the storefront edge. On the right, a man in a light shirt walks toward the camera partly in the roadway, which may place him in the ego path. Farther ahead near the center of the lane, another pedestrian moves away and reduces the available space. A small three-wheeled scooter is parked on the left, and shop signs, plants, and displays protrude from the right, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a potential collision as they share the roadway."}
{"id": "train_03473", "split": "train", "clip_key": "2020-0127-132751_101026_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "101026"}, "frames": ["2020-0127-132751_101026_movie_t-3.jpg", "2020-0127-132751_101026_movie_t-2.jpg", "2020-0127-132751_101026_movie_t-1.jpg", "2020-0127-132751_101026_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-ending the stationary vehicle", "environment_perception": "A suburban commercial two-lane road with a solid yellow centerline and narrow shoulders shows worn but intact pavement and light traffic. The ego vehicle slows and waits behind a silver van stopped directly ahead in the ego lane, blocking the path. An oncoming motorcycle approaches along the opposite lane near the centerline and passes by while the ego remains behind the van. On the right sidewalk, a pedestrian stands near storefronts and stays off the roadway.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane. Driver should stop because the vehicle ahead is stationary in their lane, posing a collision risk."}
{"id": "train_03474", "split": "train", "clip_key": "2020-0205-103411_105380_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "105380"}, "frames": ["2020-0205-103411_105380_movie_t-3.jpg", "2020-0205-103411_105380_movie_t-2.jpg", "2020-0205-103411_105380_movie_t-1.jpg", "2020-0205-103411_105380_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial in Japan carries two through lanes in the same direction with a marked merge lane on the right; the pavement is dry and traffic is light. A white box truck directly ahead in the ego lane slows and constrains the ego vehicle's pace. Farther ahead in the same lane, a small van proceeds steadily, likely the reason for the truck's reduced speed. In the right lane, another small truck continues away without impeding the ego path. On the sidewalk to the right, a bicyclist rides parallel to the road behind a guardrail. An overhead gantry sign spans the roadway, with no clear signal aspect visible.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's deceleration reduces the gap and may force sudden braking, so the driver should slow down to maintain a safe following distance."}
{"id": "train_03475", "split": "train", "clip_key": "titan_clip_1139_000144_movie", "source": {"subset": "titan", "scenario": "clip_1139", "frame": "000144"}, "frames": ["titan_clip_1139_000144_movie_t-3.jpg", "titan_clip_1139_000144_movie_t-2.jpg", "titan_clip_1139_000144_movie_t-1.jpg", "titan_clip_1139_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one narrow shared lane and no median runs between apartments and shops; the pavement is clean and traffic is light. A small van ahead in the ego lane rolls slowly away down the center, setting the pace. On the left edge, a pedestrian in a white T-shirt walks toward the ego car along the roadway and may enter the lane near the curb. At the curb on the right, other pedestrians linger by storefronts and continue along the side without entering the roadway. A large truck is parked partly in the left gutter and a car is parked on the right, together narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, walking on the left side of the road, towards the ego car. The driver should carefully manoeuvre around the pedestrian to avoid collision and ensure pedestrian safety."}
{"id": "train_03476", "split": "train", "clip_key": "2020-0129-144857_058952_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "058952"}, "frames": ["2020-0129-144857_058952_movie_t-3.jpg", "2020-0129-144857_058952_movie_t-2.jpg", "2020-0129-144857_058952_movie_t-1.jpg", "2020-0129-144857_058952_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban bridge segment carries two lanes in the ego direction, separated from oncoming lanes by a low curb median; the pavement looks smooth and traffic is light. A white truck ahead in the ego lane drives away at a steady pace, effectively setting the flow. A dark car closer ahead in the same lane continues behind the truck and maintains its gap without changing lanes. On the right, a silver sedan and other oncoming vehicles proceed in their lanes beyond the median and pass without interaction. Large 50 markings painted on the road indicate the posted speed. No pedestrians, cyclists, or obstacles are visible, and visibility remains clear throughout.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03477", "split": "train", "clip_key": "2020-0214-102601_008507_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "008507"}, "frames": ["2020-0214-102601_008507_movie_t-3.jpg", "2020-0214-102601_008507_movie_t-2.jpg", "2020-0214-102601_008507_movie_t-1.jpg", "2020-0214-102601_008507_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around cones", "environment_perception": "An urban two-way road with one lane per direction and no median stretches ahead, the pavement smooth and traffic light with steady flow. A silver hatchback ahead in the ego lane continues straight and sets the pace. Along the left edge close to the ego vehicle, a gray minivan is parked with its driver door open while a person crouches by the wheel, and several red traffic cones line the left side of the ego lane, narrowing the usable lane. In the opposite lane, a white car approaches steadily as several vehicles travel further ahead. On the right, a cyclist and a pedestrian move along the fenced sidewalk without entering the roadway.", "hazard_reasoning": "There are red traffic cones on the left side of the road in the ego lane. These cones may indicate lane restrictions or maintenance activities, so the driver should carefully manoeuvre around them to avoid collision."}
{"id": "train_03478", "split": "train", "clip_key": "2020-0203-114632_093362_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "093362"}, "frames": ["2020-0203-114632_093362_movie_t-3.jpg", "2020-0203-114632_093362_movie_t-2.jpg", "2020-0203-114632_093362_movie_t-1.jpg", "2020-0203-114632_093362_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated structure with two same-direction lanes and a separated ramp on the right; the pavement is smooth and traffic flows lightly and steadily. A white van ahead in the ego lane travels straight at a steady speed and sets the ego car's pace. A dark sedan slightly ahead in the adjacent right lane proceeds straight, roughly parallel to the ego vehicle. Farther ahead, a large white truck continues along the corridor in the same direction. Overhead blue guide signs point toward Angyo and Hatogaya, and a blue bus symbol marks a bus-only ramp on the right with its own signal.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03479", "split": "train", "clip_key": "2020-0129-105040_026169_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "026169"}, "frames": ["2020-0129-105040_026169_movie_t-3.jpg", "2020-0129-105040_026169_movie_t-2.jpg", "2020-0129-105040_026169_movie_t-1.jpg", "2020-0129-105040_026169_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs under an elevated structure, with two lanes in the ego direction bordered by guardrails and hedges; the pavement looks wet but intact and traffic is moderate, queuing at an intersection. A yellow sedan with an orange stripe is stopped directly ahead in the ego lane at the red light, holding the ego vehicle. To the right, a white van slightly ahead waits in the adjacent lane within the same queue, pacing the ego car. Several motorcycles are lined up near the stop line, and one on the left filters forward between the curb and the queued cars, passing alongside the ego lane. The signal ahead shows red.", "hazard_reasoning": "There is a yellow sedan with an orange stripe stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid collision and comply with the red light signal."}
{"id": "train_03480", "split": "train", "clip_key": "titan_clip_668_000546_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_668_000546_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_668_000546_movie_t-3_augB1.jpg", "titan_clip_668_000546_movie_t-2_augB1.jpg", "titan_clip_668_000546_movie_t-1_augB1.jpg", "titan_clip_668_000546_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for crossing pedestrians", "environment_perception": "An urban commercial street with a narrow two-way single-lane road has smooth pavement, no median, and light, slow traffic. The ego vehicle proceeds in the left lane past closely spaced storefronts. Ahead to the right, an oncoming white scooter approaches near the center of the roadway and continues straight, passing close to the ego vehicle. Along the right edge, a bicycle with a passenger rides toward the ego vehicle in the opposing lane. Along the left edge near the ego lane, three pedestrians-one in a black dress, one in a blue dress, and one carrying a handbag-walk both away from and toward the ego car, close to the travel lane and possibly entering it.", "hazard_reasoning": "There are three pedestrians wearing a black dress, blue dress, and a handbag walking along the left side of the lane, both away and toward the ego car. As they move unpredictably near the vehicle's path, the driver should stop to ensure pedestrian safety."}
{"id": "train_03481", "split": "train", "clip_key": "titan_clip_463_000156_movie", "source": {"subset": "titan", "scenario": "clip_463", "frame": "000156"}, "frames": ["titan_clip_463_000156_movie_t-3.jpg", "titan_clip_463_000156_movie_t-2.jpg", "titan_clip_463_000156_movie_t-1.jpg", "titan_clip_463_000156_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with a single lane in each direction has smooth pavement and light traffic, with no oncoming vehicles visible. A small box truck proceeds ahead in the ego lane at low speed, slightly constraining the pace. On the left side of the road in front of the ego-car, a pedestrian wearing a cap is loading a handcart at the curb and may edge toward the lane. A white van is parked along the right curb farther ahead, narrowing the available space. Green school-zone lettering is painted on the roadway, and bags of refuse with a few cones sit by the right sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a cap an loading a handcart, on the left side of the road, in front of the ego-car. The driver should carefully manoeuvre to avoid a potential collision with the slow-moving pedestrian and cart."}
{"id": "train_03482", "split": "train", "clip_key": "titan_clip_465_000354_movie", "source": {"subset": "titan", "scenario": "clip_465", "frame": "000354"}, "frames": ["titan_clip_465_000354_movie_t-3.jpg", "titan_clip_465_000354_movie_t-2.jpg", "titan_clip_465_000354_movie_t-1.jpg", "titan_clip_465_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban commercial street with a single narrow lane and block-paved surface lacks a center divider, and bollards line both curbs; there is no motor traffic while pedestrian flow is moderate. Ahead on the right, a pedestrian wearing a white shirt and carrying a backpack walks away along the roadway, remaining in the ego vehicle's path. Farther ahead, several pedestrians move along the right curb near shopfronts and a caf area, edging toward the lane and reducing usable width. On the left, pedestrians continue along the sidewalk beside parked bicycles, staying near the curb and posing little immediate interaction.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, walking on the right side of the road, away from the ego car. The driver should manoeuvre carefully around the pedestrian to maintain safety."}
{"id": "train_03483", "split": "train", "clip_key": "2020-0217-110854_044503_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "044503"}, "frames": ["2020-0217-110854_044503_movie_t-3.jpg", "2020-0217-110854_044503_movie_t-2.jpg", "2020-0217-110854_044503_movie_t-1.jpg", "2020-0217-110854_044503_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs under an elevated expressway with three lanes in the ego direction, a guardrail median on the right, and dry pavement; traffic is light to moderate and generally steady. A black van directly ahead in the ego lane moves away at a modest pace, effectively setting the ego vehicle's speed. Farther ahead in the adjacent right lane, a small van proceeds straight and gradually pulls away, remaining in its lane without affecting the ego path. On the far left, a small flatbed truck stands stopped on the shoulder beside the left lane, creating a roadside presence but not encroaching on traffic. An overhead signal gantry is visible ahead, though the signal aspect is not clear.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. The van could decelerate unexpectedly, so the driver should slow down to maintain a safe following distance."}
{"id": "train_03484", "split": "train", "clip_key": "titan_clip_891_000222_movie", "source": {"subset": "titan", "scenario": "clip_891", "frame": "000222"}, "frames": ["titan_clip_891_000222_movie_t-3.jpg", "titan_clip_891_000222_movie_t-2.jpg", "titan_clip_891_000222_movie_t-1.jpg", "titan_clip_891_000222_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian crossing ahead", "environment_perception": "An urban narrow two-way street with one lane each direction and no median is shown; the pavement looks smooth, and traffic is light to moderate, moving slowly past curbside parking. Several cars ahead in the ego lane, including a white sedan, roll forward in a short queue and set the pace for the ego vehicle. A pedestrian wearing a gray shirt crosses mid-block ahead from the right side to the left, moving through the middle of the road and into the ego lane. Parked cars line the left curb, one with its rear hatch open, narrowing the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, crossing the street in the middle of the road, from the right side to the left side. The pedestrian is crossing mid-block without a designated crosswalk, so the driver should slow down and be cautious to prevent a collision."}
{"id": "train_03485", "split": "train", "clip_key": "2020-0214-145407_037611_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "037611"}, "frames": ["2020-0214-145407_037611_movie_t-3.jpg", "2020-0214-145407_037611_movie_t-2.jpg", "2020-0214-145407_037611_movie_t-1.jpg", "2020-0214-145407_037611_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane one-way road runs beside an elevated structure, bounded by concrete barriers and fencing; the pavement is dry and smooth, and traffic flows lightly. A white box truck directly ahead in the ego lane drives away steadily, opening a gap and guiding the pace. In the adjacent right lane, a dark van slightly ahead continues straight at a similar speed without drifting toward the ego lane. No oncoming traffic appears and no signals or posted speeds are visible. Construction-style fencing lines the left side, and a ramp and wall on the right create a confined corridor without obstructing the lanes.", "hazard_reasoning": "There is a white truck driving away from the ego car in the ego lane. The truck ahead may brake or change speed unexpectedly, requiring you to remain vigilant and maintain a safe following distance."}
{"id": "train_03486", "split": "train", "clip_key": "2020-0206-101736_069885_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "069885"}, "frames": ["2020-0206-101736_069885_movie_t-3.jpg", "2020-0206-101736_069885_movie_t-2.jpg", "2020-0206-101736_069885_movie_t-1.jpg", "2020-0206-101736_069885_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings; a metal barrier separates oncoming traffic, the pavement is smooth, and traffic flows moderately. Overhead signage shows a 50 speed limit. A white truck ahead in the ego lane drives away from the camera at steady speed, leading the lane and setting the pace. To its left, a small white van in the adjacent same-direction lane travels parallel slightly ahead, continuing straight. Beyond the barrier to the right, several oncoming cars approach in their lanes with no interaction.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The truck ahead could brake suddenly or slow down, so the driver should stay alert and be prepared to react."}
{"id": "train_03487", "split": "train", "clip_key": "titan_clip_102_000390_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_102_000390_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_102_000390_movie_t-3_augB1.jpg", "titan_clip_102_000390_movie_t-2_augB1.jpg", "titan_clip_102_000390_movie_t-1_augB1.jpg", "titan_clip_102_000390_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with brick paving forms a single shared low-speed lane without a divider; traffic is light as the ego vehicle rolls forward between close storefronts and roadside cones. Ahead in the lane, a small white van travels away at low speed, constraining the ego car's pace. Closer ahead, a pedestrian wearing a white shirt walks in the middle of the road away from the ego vehicle while other pedestrians occupy the sidewalks, directly in the ego path. Additional pedestrians move along both sides near the shopfronts but remain at the edges. No traffic signals or speed signs are evident, and the pavement appears smooth.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking in the middle of the road, away from the ego car, because other pedestrians are taking up the sidewalk. The driver should slow down to avoid a collision as the pedestrian is unsafely occupying the travel lane."}
{"id": "train_03488", "split": "train", "clip_key": "titan_clip_946_000114_movie", "source": {"subset": "titan", "scenario": "clip_946", "frame": "000114"}, "frames": ["titan_clip_946_000114_movie_t-3.jpg", "titan_clip_946_000114_movie_t-2.jpg", "titan_clip_946_000114_movie_t-1.jpg", "titan_clip_946_000114_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow bidirectional urban street with buildings close to the curb has smooth asphalt, no median, and light traffic, with no vehicles immediately ahead or approaching. On the left edge near a vending machine, a pedestrian in a gray shirt and black shorts walks away from the ego vehicle along the curb, remaining outside the travel lane. Farther ahead on the left, a small white truck is stopped at the curb, narrowing the roadway but not moving. A parked car is tucked into a garage on the right, and no other road users appear.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black shorts, walking on the left side of the road, away from the ego car. The driver should be aware of this pedestrian in case they change direction or step into the vehicle's path."}
{"id": "train_03489", "split": "train", "clip_key": "2020-0203-114632_028766_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "028766"}, "frames": ["2020-0203-114632_028766_movie_t-3.jpg", "2020-0203-114632_028766_movie_t-2.jpg", "2020-0203-114632_028766_movie_t-1.jpg", "2020-0203-114632_028766_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of the merging van", "environment_perception": "An urban arterial with two lanes in each direction runs between tall buildings, separated from oncoming lanes by orange flexible posts; the pavement is clean and traffic is light to moderate. Ahead in the ego lane, a black van changes to the left lane, moving toward the curb and briefly constraining the ego vehicle's path. Farther ahead, a white car in the same direction continues toward a signalized intersection and slows slightly. A dark gray SUV is parked along the left curb within a marked bay, narrowing the space where the van merges. Oncoming traffic to the right flows steadily in its own lanes, divided by the posts, and overhead blue destination signs are visible before the intersection.", "hazard_reasoning": "There is a black van in front of the ego car, changing to the left lane. Its lane change may pose a collision risk if not anticipated, so the driver should be cautious of the merging van."}
{"id": "train_03490", "split": "train", "clip_key": "titan_clip_1068_000498_movie", "source": {"subset": "titan", "scenario": "clip_1068", "frame": "000498"}, "frames": ["titan_clip_1068_000498_movie_t-3.jpg", "titan_clip_1068_000498_movie_t-2.jpg", "titan_clip_1068_000498_movie_t-1.jpg", "titan_clip_1068_000498_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the pedestrian", "environment_perception": "A narrow urban two-way residential road with no centerline and smooth pavement rises gently between buildings; the ego vehicle keeps left with no other vehicles present, so traffic is very light. On the right edge of the roadway ahead, a man in shorts and sandals walks toward the ego vehicle, using the road because the adjacent sidewalk is full and he may drift into the travel path. Several other pedestrians move along the right sidewalk in both directions behind a white railing, remaining separated from the lane. An orange safety cone stands on the left shoulder but does not obstruct the roadway.", "hazard_reasoning": "There is a man wearing shorts and sandals and walking on the right side of the road, toward the ego car, because the sidewalk is full. The driver should yield to avoid a potential collision if the pedestrian steps onto the roadway."}
{"id": "train_03491", "split": "train", "clip_key": "titan_clip_807_000180_movie", "source": {"subset": "titan", "scenario": "clip_807", "frame": "000180"}, "frames": ["titan_clip_807_000180_movie_t-3.jpg", "titan_clip_807_000180_movie_t-2.jpg", "titan_clip_807_000180_movie_t-1.jpg", "titan_clip_807_000180_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian crossing ahead.", "environment_perception": "In a dense urban area, the ego-vehicle proceeds on a two-way street with one lane each direction and no median, the pavement smooth, and traffic slow as it approaches a gentle left bend toward a signalized intersection. A large 7-Eleven truck is stopped slightly ahead along the left curb, its body protruding into the ego lane and narrowing the passage. On the right, a CALPIS delivery truck is stopped at the curb while a worker with a hand cart stands at its rear near the lane edge, creating a potential obstacle. Farther ahead at the crosswalk, a pedestrian in a white shirt crosses from the left, with other pedestrians waiting nearby and influencing the pace. The traffic light ahead shows red.", "hazard_reasoning": "There is a pedestrian in a white shirt, crossing the street from the left side. The driver should be aware because the pedestrian may move unpredictably into the road."}
{"id": "train_03492", "split": "train", "clip_key": "2020-0207-101955_021242_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "021242"}, "frames": ["2020-0207-101955_021242_movie_t-3.jpg", "2020-0207-101955_021242_movie_t-2.jpg", "2020-0207-101955_021242_movie_t-1.jpg", "2020-0207-101955_021242_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes and a narrow bollard-separated side lane has smooth pavement, and traffic is heavy but stationary at an intersection. In the ego lane a small green covered truck directly ahead is stopped for the red light, holding the ego car. In the left adjacent lane a blue cargo truck farther ahead also waits, keeping that queue still. On the right, an orange kei car in the side lane stops near the bollards without merging. Overhead signals show red and blue straight-ahead arrows indicate through movement only.", "hazard_reasoning": "There is a green truck stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver must stop to avoid collision with the stationary truck and comply with the red signal."}
{"id": "train_03493", "split": "train", "clip_key": "2020-0226-140503_082761_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "082761"}, "frames": ["2020-0226-140503_082761_movie_t-3.jpg", "2020-0226-140503_082761_movie_t-2.jpg", "2020-0226-140503_082761_movie_t-1.jpg", "2020-0226-140503_082761_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and maintain safe distance", "environment_perception": "An urban multi-lane arterial with smooth dry pavement carries heavy, slow traffic in long queues toward a signalized intersection. Immediately ahead in the ego lane, a white hatchback is stopped because of congestion and holds the ego vehicle's pace. To the left, a silver van just ahead inches forward with the line in the neighboring lane, limiting any lane change. On the right, a dark SUV farther ahead creeps along in the adjacent lane, remaining parallel to the queue. Overhead lane signs show through and left-turn directions, and traffic lights hang above the junction down the road.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of traffic congestion ahead. The driver should stop and maintain a safe distance to avoid a collision with the halted vehicle."}
{"id": "train_03494", "split": "train", "clip_key": "2020-0204-150838_084142_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "084142"}, "frames": ["2020-0204-150838_084142_movie_t-3.jpg", "2020-0204-150838_084142_movie_t-2.jpg", "2020-0204-150838_084142_movie_t-1.jpg", "2020-0204-150838_084142_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth pavement runs between a fence on the left and a guardrail and sound barrier on the right, and traffic is heavy and mostly stopped. A black hatchback directly ahead in the ego lane is stopped because of congestion ahead, holding our lane. In the adjacent lane to the left, a silver minivan slightly ahead creeps forward in the queue, limiting an immediate merge. Farther ahead, a white box truck and other vehicles line up across the lanes and inch along, forming the visible tail of the jam. No salient signals or unusual hazards are visible.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a potential rear-end collision with the stopped vehicle ahead."}
{"id": "train_03495", "split": "train", "clip_key": "2020-0207-101955_005553_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_005553_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_005553_movie_t-3_augB1.jpg", "2020-0207-101955_005553_movie_t-2_augB1.jpg", "2020-0207-101955_005553_movie_t-1_augB1.jpg", "2020-0207-101955_005553_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way arterial with smooth dry pavement and red-painted curb lane is shown, separated by double white center lines; traffic is moderate and generally steady. A green canvas-covered truck is directly ahead in the ego lane and slows, so the ego car follows its pace. To the right beyond the center lines, an oncoming light truck approaches and passes straight through without conflict. In the left curb lane ahead, a dark van sits slow or stopped near the bus-lane area and may merge into the through lane.", "hazard_reasoning": "There is a green truck slowing in the ego lane, in front of the ego car. The leading truck's reduced speed can force sudden braking, so the driver should slow down to maintain a safe following distance."}
{"id": "train_03496", "split": "train", "clip_key": "titan_clip_1177_000522_movie", "source": {"subset": "titan", "scenario": "clip_1177", "frame": "000522"}, "frames": ["titan_clip_1177_000522_movie_t-3.jpg", "titan_clip_1177_000522_movie_t-2.jpg", "titan_clip_1177_000522_movie_t-1.jpg", "titan_clip_1177_000522_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban narrow two-way street curves gently left with no median and smooth pavement, and traffic is light with no moving vehicles ahead. On the right edge near the ego vehicle, a pedestrian wearing white pants and a checkered shirt walks away along the curb, close to the travel lane and potentially constraining the pace. Farther ahead to the right, another pedestrian steps left across the side street by the building, remaining outside the ego lane. A distant person ahead near the left side walks away along the roadside. A convex safety mirror is mounted on a pole to the left, and orange traffic cones line the right curb, slightly narrowing the shoulder area.", "hazard_reasoning": "There is a pedestrian wearing white pants and a checkered shirt walking on the right side of the road, away from the ego car. Because they may step into the vehicle's path, the driver should carefully manoeuvre around them to avoid collision."}
{"id": "train_03497", "split": "train", "clip_key": "titan_clip_100_000180_movie", "source": {"subset": "titan", "scenario": "clip_100", "frame": "000180"}, "frames": ["titan_clip_100_000180_movie_t-3.jpg", "titan_clip_100_000180_movie_t-2.jpg", "titan_clip_100_000180_movie_t-1.jpg", "titan_clip_100_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single lane in the ego direction and no median runs between close storefronts; the brick paving appears smooth and traffic is light. Ahead on the right edge, a woman wearing a pink shirt pushes a handcart of flowers away from the ego car along the curb, occupying part of the lane and constricting space. A small truck with a blue tarp is stopped on the left near the camera, its rear jutting slightly into the roadway and further narrowing the corridor. Farther ahead in the same direction, a white van proceeds at low speed, influencing the ego vehicle's pace.", "hazard_reasoning": "There is a woman wearing a pink shirt, pushing flowers on a handcart, and walking on the right side of the road away from the ego-car. The driver should slow down because the pedestrian near the carriage could change direction or enter the travel lane unexpectedly."}
{"id": "train_03498", "split": "train", "clip_key": "2020-0213-143552_016470_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "016470"}, "frames": ["2020-0213-143552_016470_movie_t-3.jpg", "2020-0213-143552_016470_movie_t-2.jpg", "2020-0213-143552_016470_movie_t-1.jpg", "2020-0213-143552_016470_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A busy urban arterial with two lanes in the ego direction and opposing lanes to the right runs between mid-rise buildings; the pavement is smooth and traffic is heavy and slow beneath a pedestrian overpass. A white minivan directly ahead in the ego lane is stopped because congestion blocks the way, holding the ego car. Slightly ahead to the left, a dark sedan in the adjacent same-direction lane waits in the queue, limiting gaps to merge. On the right, a white car approaches as oncoming traffic and passes steadily in its lane without encroaching. Parked vehicles line the left curb near storefronts.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car in the ego lane, because of traffic congestion ahead. You should stop to avoid colliding with the stopped vehicle ahead."}
{"id": "train_03499", "split": "train", "clip_key": "titan_clip_137_000282_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_137_000282_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_137_000282_movie_t-3_augB1.jpg", "titan_clip_137_000282_movie_t-2_augB1.jpg", "titan_clip_137_000282_movie_t-1_augB1.jpg", "titan_clip_137_000282_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian with the cart.", "environment_perception": "An urban two-way street with one lane each way, no median, and smooth pavement shows light traffic as the ego approaches a cross-street without visible signals. A silver microvan ahead in the ego lane rolls slowly toward the junction. A pedestrian wearing a striped shirt and black pants pushes a blue cart away from the ego in the middle of the road ahead, occupying the lane and constraining the van's pace. The oncoming lane near the intersection is clear, while other pedestrians stay on the sidewalks by the crosswalks.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt and black pants, and pushing a blue cart away from the ego car, in the middle of the road. The pedestrian is in the roadway and may cross unpredictably, so the driver should yield to allow them to pass safely."}
{"id": "train_03500", "split": "train", "clip_key": "2020-0203-114632_071897_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "071897"}, "frames": ["2020-0203-114632_071897_movie_t-3.jpg", "2020-0203-114632_071897_movie_t-2.jpg", "2020-0203-114632_071897_movie_t-1.jpg", "2020-0203-114632_071897_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated two-lane road curves left beside a concrete sound wall, with worn but serviceable pavement and heavy, slow same-direction traffic. A gray van directly ahead in the ego lane slows because of congestion further up, dictating the ego vehicle's pace. To the right, a large white semi-trailer creeps forward in the adjacent lane alongside the ego car, making a lane change difficult. Farther ahead near the bend, more vehicles queue tightly, including a dark truck partly visible ahead of the van, maintaining the bottleneck. The high wall and the leftward curve reduce sight lines, reinforcing the slow, cautious flow.", "hazard_reasoning": "There is a gray van slowing in front of the ego-car, in the ego-lane, because of the traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and anticipate potential stopping due to congestion."}
{"id": "train_03501", "split": "train", "clip_key": "2020-0131-103016_012535_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "012535"}, "frames": ["2020-0131-103016_012535_movie_t-3.jpg", "2020-0131-103016_012535_movie_t-2.jpg", "2020-0131-103016_012535_movie_t-1.jpg", "2020-0131-103016_012535_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road with no physical median and dry, smooth pavement carries moderate traffic through a signalized intersection. Ahead in the ego lane, a black van proceeds through the junction under a green light and sets the ego car's pace. Slightly left and just ahead, a motorcyclist rides across the crosswalk and merges forward in the ego lane, potentially influencing the gap to the van. Oncoming vehicles, including a white van in the right-side lanes, pass through the intersection without conflict. Pedestrians on the left sidewalk wait at the curb near the crosswalk. Cones and barriers line the right shoulder, marking a small roadside work area outside the travel lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03502", "split": "train", "clip_key": "titan_clip_927_000252_movie", "source": {"subset": "titan", "scenario": "clip_927", "frame": "000252"}, "frames": ["titan_clip_927_000252_movie_t-3.jpg", "titan_clip_927_000252_movie_t-2.jpg", "titan_clip_927_000252_movie_t-1.jpg", "titan_clip_927_000252_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked truck ahead.", "environment_perception": "An urban commercial street with one lane in each direction and no median runs between shopfronts and trees; pavement is smooth and traffic is light but slowed by loading activity. Ahead on the left in the ego lane, a truck is stationary and being unloaded with a lift and dolly, occupying part of the lane and constraining the ego vehicle's pace. On the right curb near the camera, two people work at the open hatch of a blue car and stand close to the roadway, creating a possible encroachment into the travel lane. A small gray truck is parked at the left curb near the ego vehicle, further narrowing the passage as it moves past. Farther ahead, an oncoming car continues in its right-side lane, visible beyond the loading area.", "hazard_reasoning": "There is a gray semi truck parked on the left side of the road in the ego lane, because it is being unloaded. The parked truck blocks part of the ego lane, so the driver should be aware and prepared for potential obstruction."}
{"id": "train_03503", "split": "train", "clip_key": "titan_clip_1178_000462_movie", "source": {"subset": "titan", "scenario": "clip_1178", "frame": "000462"}, "frames": ["titan_clip_1178_000462_movie_t-3.jpg", "titan_clip_1178_000462_movie_t-2.jpg", "titan_clip_1178_000462_movie_t-1.jpg", "titan_clip_1178_000462_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian crossing in front.", "environment_perception": "An urban commercial street with a single lane each way meets a signalized crosswalk at an intersection; the pavement is smooth and traffic is light. To the left front, a pedestrian crosses the marked crosswalk directly in front of the ego-car. Two more pedestrians ahead on the right also cross right-to-left at the same crosswalk, continuing across the ego lane and constraining progress. A white truck stands ahead on the right edge by the corner, partly encroaching near the crossing and waiting, which narrows the approach and limits visibility. Overhead traffic signals and a pedestrian signal are visible.", "hazard_reasoning": "There is a pedestrian crossing the street at the pedestrian crossing, to the left side, in front of the ego-car. The pedestrian is stepping into the vehicle's path at the crosswalk, so the driver needs to yield to avoid a collision."}
{"id": "train_03504", "split": "train", "clip_key": "2020-0205-103411_076636_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "076636"}, "frames": ["2020-0205-103411_076636_movie_t-3.jpg", "2020-0205-103411_076636_movie_t-2.jpg", "2020-0205-103411_076636_movie_t-1.jpg", "2020-0205-103411_076636_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way avenue with multiple lanes and no physical median runs between tall buildings; the pavement is good and traffic is moderate as the ego approaches a wide signalized intersection. Ahead in the ego lane, a black box truck travels away from us, setting our pace. To its left, a small white car continues straight in the adjacent same-direction lane, pulling slightly ahead and staying out of our path. On the right side in the opposing lanes, a large truck approaches through the intersection and passes ahead, clearly oncoming and separate from our lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03505", "split": "train", "clip_key": "2020-0206-101736_028112_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-101736_028112_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-101736_028112_movie_t-3_augB1.jpg", "2020-0206-101736_028112_movie_t-2_augB1.jpg", "2020-0206-101736_028112_movie_t-1_augB1.jpg", "2020-0206-101736_028112_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield to merging vehicle", "environment_perception": "An urban arterial with two lanes in the ego direction and no physical median shows clean pavement and slow, queuing traffic. A white SUV sits front-left, partly over the lane line, stopped while cutting into the ego lane from the left because of congestion ahead. A white sedan directly ahead in the ego lane creeps and pauses, constraining the ego vehicle's pace. More cars queue farther ahead in both same-direction lanes, moving gradually toward the next block. No salient signals are visible, and no pedestrians or obstacles enter the roadway.", "hazard_reasoning": "There is a white SUV stopped while cutting in to the ego lane, from the left lane, because of traffic congestion ahead. The unexpected merge of the stopped vehicle into your lane increases collision risk and requires yielding to maintain safety."}
{"id": "train_03506", "split": "train", "clip_key": "titan_clip_376_000438_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_376_000438_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_376_000438_movie_t-3_augB1.jpg", "titan_clip_376_000438_movie_t-2_augB1.jpg", "titan_clip_376_000438_movie_t-1_augB1.jpg", "titan_clip_376_000438_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrian", "environment_perception": "A narrow urban commercial side street with brick paving and no center divider is shown, with light traffic as the ego vehicle proceeds straight on a two-way road. A black car ahead in the same direction rolls slowly down the lane, setting the pace. A pedestrian carrying a briefcase runs from the right side of the road to the left, crossing directly across the ego path. Ahead-left, another pedestrian steps from the left curb and walks diagonally toward the center, close to the ego lane. Bicycles are parked along the left edge and storefronts line both sides.", "hazard_reasoning": "A pedestrian carrying a briefcase is running from the right side of the road to the left side. Driver should yield because the pedestrian may enter the vehicle's path unexpectedly, increasing collision risk."}
{"id": "train_03507", "split": "train", "clip_key": "2020-0203-154554_005011_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "005011"}, "frames": ["2020-0203-154554_005011_movie_t-3.jpg", "2020-0203-154554_005011_movie_t-2.jpg", "2020-0203-154554_005011_movie_t-1.jpg", "2020-0203-154554_005011_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision with motorcycle.", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and smooth pavement approaches a broad intersection, and traffic is moderate, slowing to a stop near the junction. A white van ahead in the same direction slows and queues at the stop line, setting the pace. A motorcycle of undetermined color is stopped in the ego lane because congestion builds ahead, standing directly in the path. Numerous pedestrians stream across the distant crosswalk from both sides, keeping vehicles halted. Sparse opposing traffic beyond the intersection moves freely.", "hazard_reasoning": "There is a motorcycle of undetermined color stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid collision with the halted motorcycle."}
{"id": "train_03508", "split": "train", "clip_key": "titan_clip_1177_000270_movie", "source": {"subset": "titan", "scenario": "clip_1177", "frame": "000270"}, "frames": ["titan_clip_1177_000270_movie_t-3.jpg", "titan_clip_1177_000270_movie_t-2.jpg", "titan_clip_1177_000270_movie_t-1.jpg", "titan_clip_1177_000270_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around pedestrian carefully", "environment_perception": "An urban neighborhood street with a narrow single carriageway lacking a centerline runs ahead between storefronts and trees; the pavement is smooth and traffic is light with no vehicles visible as the road bends gently right. On the right side of the road, a pedestrian wearing a checked shirt and white pants walks away from the ego car along the edge, close to the travel lane. At the convenience store entrance on the left, another person stands near the curb, stationary and watching the street near the lane. Far ahead, a pedestrian moves across the roadway toward the right side, momentarily occupying the path the ego vehicle will take.", "hazard_reasoning": "A pedestrian wearing a checked shirt and white pants is walking on the right side of the road, away from the ego car. Therefore, the driver should manoeuvre around the pedestrian carefully to maintain safe clearance."}
{"id": "train_03509", "split": "train", "clip_key": "2020-0218-103119_051199_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "051199"}, "frames": ["2020-0218-103119_051199_movie_t-3.jpg", "2020-0218-103119_051199_movie_t-2.jpg", "2020-0218-103119_051199_movie_t-1.jpg", "2020-0218-103119_051199_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road approaches a signalized intersection, the pavement dry and smooth, with moderate traffic that begins to roll forward. Ahead in the ego lane, a gray box truck accelerates as traffic starts moving, setting the pace for the ego vehicle. To the left, a white van in the adjacent lane moves off in parallel, holding its lane through the junction. In the lane to the right, a gray sedan slightly ahead also accelerates straight, remaining clear of the ego path. Overhead traffic lights govern the junction, and several pedestrians stand at the far-right corner near the crosswalk.", "hazard_reasoning": "There is a gray truck accelerating in the ego lane, because traffic has started moving forward. You should start moving to keep pace with traffic and avoid being delayed or causing congestion."}
{"id": "train_03510", "split": "train", "clip_key": "2020-0220-102630_026085_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "026085"}, "frames": ["2020-0220-102630_026085_movie_t-3.jpg", "2020-0220-102630_026085_movie_t-2.jpg", "2020-0220-102630_026085_movie_t-1.jpg", "2020-0220-102630_026085_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane street with a curbside sidewalk runs between mid-rise buildings; the pavement looks smooth and traffic is slow and mostly stopped. A large white box truck is stopped directly ahead in the leftmost lane, blocking the ego lane, so the ego car waits behind it. In the lane to the right, a smaller covered-bed truck sits slightly ahead with its brake lights on, occupying the space that would allow a merge and keeping the ego vehicle in place. Farther ahead in that right lane, a passenger car continues away. No salient signals are visible.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The stopped vehicle ahead requires you to stop promptly to avoid a rear-end collision and maintain a safe following distance."}
{"id": "train_03511", "split": "train", "clip_key": "2020-0207-101955_122753_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "122753"}, "frames": ["2020-0207-101955_122753_movie_t-3.jpg", "2020-0207-101955_122753_movie_t-2.jpg", "2020-0207-101955_122753_movie_t-1.jpg", "2020-0207-101955_122753_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop promptly", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with a narrow curbside shoulder and smooth pavement; traffic is heavy and largely stopped. A white van is immediately ahead in the ego lane, stopped due to queuing traffic and blocking the path. In the adjacent lane to the left, a pink refuse truck ahead is also stopped, limiting any chance to merge. Farther ahead in that same left lane, a tall box truck waits in the queue, contributing to the slowdown. Other cars line up further left in the same direction, inching forward with minimal gaps. No oncoming traffic is visible, and no signals or posted speeds appear.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. You should stop to maintain a safe following distance and avoid a collision."}
{"id": "train_03512", "split": "train", "clip_key": "titan_clip_1082_000030_movie", "source": {"subset": "titan", "scenario": "clip_1082", "frame": "000030"}, "frames": ["titan_clip_1082_000030_movie_t-3.jpg", "titan_clip_1082_000030_movie_t-2.jpg", "titan_clip_1082_000030_movie_t-1.jpg", "titan_clip_1082_000030_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "An urban commercial street with one lane each way and no median approaches a signalized intersection; pavement is smooth and traffic stays light. A white van ahead in the ego lane travels away toward the junction at low speed, setting the pace. A woman wearing a white shirt and a black skirt walks along the left side of the road away from the ego car, keeping to the curb. From the right, a silver car comes along the cross street toward the intersection and slows where it would cross the ego vehicle's path. Numerous parked bicycles line the left, and a scooter is parked by the right-corner building.", "hazard_reasoning": "There is a woman wearing a white shirt and a black skirt walking on the left side of the road, away from the ego car. The pedestrian could enter the roadway unexpectedly when the light changes, so the driver should remain alert."}
{"id": "train_03513", "split": "train", "clip_key": "2020-0227-153144_025267_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "025267"}, "frames": ["2020-0227-153144_025267_movie_t-3.jpg", "2020-0227-153144_025267_movie_t-2.jpg", "2020-0227-153144_025267_movie_t-1.jpg", "2020-0227-153144_025267_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of the van changing lanes", "environment_perception": "An urban multi-lane arterial runs between tall buildings with smooth pavement and a planted median separating oncoming traffic; flow is light to moderate and steady. A white van directly ahead in the ego lane changes to the right lane in front of the ego car, briefly constraining the pace. Farther ahead, another white van continues straight in the right lane after the merge. A white sedan ahead to the left holds its lane at a similar speed without affecting the ego vehicle.", "hazard_reasoning": "There is a white van lane changing in front of the ego car, from the ego lane to the right lane. The van's sudden lane change could intersect the ego vehicle's path, so the driver should be aware of its movement to adjust speed or trajectory accordingly."}
{"id": "train_03514", "split": "train", "clip_key": "2020-0205-103411_005516_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "005516"}, "frames": ["2020-0205-103411_005516_movie_t-3.jpg", "2020-0205-103411_005516_movie_t-2.jpg", "2020-0205-103411_005516_movie_t-1.jpg", "2020-0205-103411_005516_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban commercial setting shows a signalized multi-leg intersection with broad zebra crossings; the ego vehicle sits in the left lane of a two-way road with no median, smooth pavement, and light motor traffic. On the right side of the intersection, two pedestrians wearing black jackets and pants cross toward the ego vehicle along the near crosswalk, entering the ego vehicle's path. Slightly ahead to the right, another pedestrian walks diagonally left across the intersection, also traversing the lane ahead. At the near right corner, a person remains on the curb, looking toward the roadway without stepping out.", "hazard_reasoning": "There are two pedestrians wearing black jackets and black pants, crossing the street at the right side of the intersection, towards the ego car. The driver should yield to allow the pedestrians to cross safely and avoid a collision."}
{"id": "train_03515", "split": "train", "clip_key": "2020-0129-105040_002803_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "002803"}, "frames": ["2020-0129-105040_002803_movie_t-3.jpg", "2020-0129-105040_002803_movie_t-2.jpg", "2020-0129-105040_002803_movie_t-1.jpg", "2020-0129-105040_002803_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban arterial with two-way traffic and a narrow raised median runs straight ahead; the ego car travels in the left-side lane on smooth, dry asphalt, with light same-direction flow and moderate oncoming movement. A pedestrian in a cap and reflective vest stands on the left sidewalk by the fence near the crosswalk, waiting at the curb and potentially entering the ego lane. A silver hatchback is stopped along the left curb just beyond the crosswalk, remaining stationary and potentially merging or masking pedestrians. Two small vans approach in the opposing lanes to the right, continuing past at steady speed and not conflicting due to the divider. No signals are in view.", "hazard_reasoning": "There is a pedestrian wearing a cap and a reflective vest, standing at the left side of the road. The driver should be aware of the pedestrian because they might enter the lane without warning."}
{"id": "train_03516", "split": "train", "clip_key": "2020-0218-103119_041098_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0218-103119_041098_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0218-103119_041098_movie_t-3_augB1.jpg", "2020-0218-103119_041098_movie_t-2_augB1.jpg", "2020-0218-103119_041098_movie_t-1_augB1.jpg", "2020-0218-103119_041098_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop immediately to avoid collision with the truck", "environment_perception": "An urban two-way road with one lane each direction and double center lines has smooth dry pavement and light-to-moderate flow that briefly slows. A white box truck directly ahead in the ego lane is stopping, holding the lane and constraining the ego car. A silver wagon alongside the truck on the left advances in the same direction, passing slowly along the curbside space. On the right, a white SUV approaches as oncoming traffic in its lane, continuing straight past the scene.", "hazard_reasoning": "The white truck is stopping in front of the ego car, in the ego lane. The driver should stop immediately to avoid a collision since the truck ahead is halting and the forward view is blocked."}
{"id": "train_03517", "split": "train", "clip_key": "2020-0207-151349_092946_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "092946"}, "frames": ["2020-0207-151349_092946_movie_t-3.jpg", "2020-0207-151349_092946_movie_t-2.jpg", "2020-0207-151349_092946_movie_t-1.jpg", "2020-0207-151349_092946_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multi-lane road with metal railings on both sides has dry pavement and heavy, stop-and-go traffic under strong sun glare. A white mini-truck directly ahead in the ego lane is stopped at a red light, holding the ego vehicle. In the adjacent right lane a large dump truck slightly ahead slows with the queue, remaining alongside and constraining any lane change. A silver passenger van at the far right edge moves slowly in the same direction beside the queue. Overhead gantry signs are visible ahead, and no pedestrians or oncoming traffic appear.", "hazard_reasoning": "There is a white mini-truck stopped in the ego lane in front of the ego car, because of a red traffic light. The driver should stop immediately to avoid a rear-end collision with the halted vehicle."}
{"id": "train_03518", "split": "train", "clip_key": "2020-0129-105040_018997_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "018997"}, "frames": ["2020-0129-105040_018997_movie_t-3.jpg", "2020-0129-105040_018997_movie_t-2.jpg", "2020-0129-105040_018997_movie_t-1.jpg", "2020-0129-105040_018997_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban elevated arterial with three same-direction lanes and side guardrails stretches ahead; the pavement is smooth and a red-painted lane runs along the left. Traffic is heavy and largely stopped. A white hatchback directly ahead in the ego lane stands still because of congestion ahead, holding the ego vehicle. To the right, a tall box truck in the adjacent lane is stopped, limiting the forward view and matching the slow pace. On the far right, a white car alongside edges forward in its lane, remaining parallel and close to the ego car without merging.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_03519", "split": "train", "clip_key": "titan_clip_36_000324_movie", "source": {"subset": "titan", "scenario": "clip_36", "frame": "000324"}, "frames": ["titan_clip_36_000324_movie_t-3.jpg", "titan_clip_36_000324_movie_t-2.jpg", "titan_clip_36_000324_movie_t-1.jpg", "titan_clip_36_000324_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "A narrow urban shared-lane street lined with mid-rise buildings has a block-paved surface and no center divider; vehicle traffic is light and slow. A small silver van ahead in the ego lane rolls forward at low speed, setting the pace as it passes through pedestrians. A pedestrian in a black T-shirt at the right edge steps off the sidewalk and crosses toward the left side of the road, potentially entering the ego vehicle's path. Another pedestrian in a blue shirt is already near the middle of the lane walking leftward across in front of the van. A man with a backpack on the left nears the curb and starts to cross toward the right, adding to the immediate crossing activity. A no-parking sign stands on the right.", "hazard_reasoning": "There is a pedestrian wearing a black T-shirt in the middle of the road, crossing to the left ride of the road. Under this situation, the driver should yield to the pedestrian to avoid a potential collision by giving them right of way."}
{"id": "train_03520", "split": "train", "clip_key": "titan_clip_1183_000324_movie", "source": {"subset": "titan", "scenario": "clip_1183", "frame": "000324"}, "frames": ["titan_clip_1183_000324_movie_t-3.jpg", "titan_clip_1183_000324_movie_t-2.jpg", "titan_clip_1183_000324_movie_t-1.jpg", "titan_clip_1183_000324_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with no median runs between shops and offices; the asphalt looks worn and traffic is light. The ego vehicle continues in the left lane as the margins are cluttered by storefront items. Ahead on the left edge, a woman wearing black trousers and a white top walks within the ego lane where there is little or no sidewalk, so she could affect the vehicle's path. On the near right, a pedestrian with luggage stands by the curb and slightly in the roadway, presenting a close-by obstruction. Farther ahead near the center of the street, a white van appears stopped. Stacked crates and a hand cart further narrow the roadway.", "hazard_reasoning": "A woman wearing a pair of black trousers and a white top, walking on the left side of the ego lane, because there is no sidewalk. The pedestrian's presence in the driving lane poses a collision risk, so the driver should carefully manoeuvre around her to maintain safety."}
{"id": "train_03521", "split": "train", "clip_key": "2020-0210-155354_025613_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-155354_025613_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-155354_025613_movie_t-3_augB1.jpg", "2020-0210-155354_025613_movie_t-2_augB1.jpg", "2020-0210-155354_025613_movie_t-1_augB1.jpg", "2020-0210-155354_025613_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "An urban scene shows the ego vehicle on smooth asphalt along a two-lane same-direction road without a median and with moderate traffic. A black mini MPV directly ahead in the left lane continues steadily and limits the ego car's pace. To the right, a yellow dump truck runs slightly ahead with its left indicator blinking and begins moving left to cut in front of the ego car because of the traffic flow, so it may enter the ego lane. Farther ahead, several vehicles queue in the distance and keep overall speeds modest. A side street with a crosswalk appears on the left but does not affect the lane.", "hazard_reasoning": "There is a yellow truck signaling to cut-in in front of the ego-car from the right lane to the left lane because of the traffic flow. Yield to the merging truck to avoid a collision as it performs its lane change."}
{"id": "train_03522", "split": "train", "clip_key": "titan_clip_730_000564_movie", "source": {"subset": "titan", "scenario": "clip_730", "frame": "000564"}, "frames": ["titan_clip_730_000564_movie_t-3.jpg", "titan_clip_730_000564_movie_t-2.jpg", "titan_clip_730_000564_movie_t-1.jpg", "titan_clip_730_000564_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of the pedestrian", "environment_perception": "An urban back street with a single narrow two-way lane runs between dense shops; pavement is smooth and traffic is light with no cars seen. The ego vehicle proceeds along the center-left of the lane as roadside displays and parked bicycles line the edges. On the right side near the curb, a man in a black outfit pushes a green trolley toward the ego vehicle, moving partly in the roadway and potentially entering the travel path. Ahead slightly left, an oncoming cyclist rides toward the camera along the lane, occupying space that limits passing room. Farther ahead near mid-block, a small group of pedestrians walks across the lane from left to right, continuing into the ego vehicle's path.", "hazard_reasoning": "There is a man wearing a black shirt and black pants, and pushing a green trolley towards the ego car, on the right side of the road. The driver should be aware because the pedestrian may move into the vehicle's path unexpectedly."}
{"id": "train_03523", "split": "train", "clip_key": "titan_clip_145_000420_movie", "source": {"subset": "titan", "scenario": "clip_145", "frame": "000420"}, "frames": ["titan_clip_145_000420_movie_t-3.jpg", "titan_clip_145_000420_movie_t-2.jpg", "titan_clip_145_000420_movie_t-1.jpg", "titan_clip_145_000420_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian crossing ahead.", "environment_perception": "A narrow urban commercial side street without a center line stretches ahead under clear daylight; the pavement is smooth and traffic is light, with several vehicles and bicycles along the curbs. Ahead, a woman wearing a black dress and carrying a handbag crosses the zebra crosswalk from left to right across the ego lane, occupying the path and constraining progress. A black sedan is parked on the left at the crosswalk, close to the lane, reducing space near the entry. Storefronts and trees line the sidewalks, and additional parked vehicles sit farther ahead on the left.", "hazard_reasoning": "There is a woman wearing a black dress, carrying a handbag, and crossing a crosswalk from left to right. The driver should yield because the pedestrian is in the crosswalk and may continue into the vehicle's path."}
{"id": "train_03524", "split": "train", "clip_key": "2020-0129-105040_026220_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-105040_026220_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-105040_026220_movie_t-3_augB1.jpg", "2020-0129-105040_026220_movie_t-2_augB1.jpg", "2020-0129-105040_026220_movie_t-1_augB1.jpg", "2020-0129-105040_026220_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the motorcycle merging ahead", "environment_perception": "An urban multi-lane arterial under an elevated structure has dry, well?arked pavement and traffic queues at a signalized intersection with slow flow. A yellow taxi directly ahead in the ego lane waits at the light, constraining the ego vehicle's pace. A black motorcycle from the left edge cuts into the ego car's lane just ahead, merging into the gap at low speed. A pedestrian farther ahead to the right crosses the roadway at the intersection between stationary vehicles. The traffic signal ahead shows red.", "hazard_reasoning": "There is a black motorcycle cutting into the ego car lane in front of the ego car. The motorcycle's sudden lane intrusion could force abrupt steering or braking and increase collision risk, so the driver should be aware of its movement."}
{"id": "train_03525", "split": "train", "clip_key": "2020-0127-132751_013736_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "013736"}, "frames": ["2020-0127-132751_013736_movie_t-3.jpg", "2020-0127-132751_013736_movie_t-2.jpg", "2020-0127-132751_013736_movie_t-1.jpg", "2020-0127-132751_013736_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway approaches an underpass with three lanes in the ego direction and a single oncoming lane to the right, no physical median, and slightly worn pavement; traffic is moderate to heavy and compresses near the tunnel. A black sedan ahead in the ego lane slows because of congestion ahead, reducing the ego car's pace. A large blue-and-white coach bus slightly farther ahead in the middle lane also decelerates as it nears the underpass, pacing traffic beside the ego lane. On the far left, a short queue led by a white van creeps near the curb. In the oncoming lane to the right, a silver mini-truck proceeds past without interaction.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to match the reduced speed of the sedan and maintain a safe following distance in the congested traffic."}
{"id": "train_03526", "split": "train", "clip_key": "2020-0131-103016_011734_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-103016_011734_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-103016_011734_movie_t-3_augB1.jpg", "2020-0131-103016_011734_movie_t-2_augB1.jpg", "2020-0131-103016_011734_movie_t-1_augB1.jpg", "2020-0131-103016_011734_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "be aware of the motorcycle ahead", "environment_perception": "An urban divided arterial with three lanes in the ego direction and a planted median on the left shows smooth pavement and moderate, slow-moving traffic. A black motorcycle rides directly ahead in the ego lane and continues straight at a steady pace, effectively setting the ego car's speed. Ahead left, a scooter travels in the adjacent lane near the curb and moves forward close to the lane line, where it may edge toward the ego lane. To the right, a white sedan runs parallel slightly ahead in its lane and holds its line without merging. Farther ahead, a large box truck amid mixed cars in the middle lanes rolls slowly and contributes to the general crawl.", "hazard_reasoning": "There is a black motorcycle driving in front of the ego car in the ego lane. The motorcycle could brake or maneuver suddenly, so the driver should be aware to maintain a safe following distance."}
{"id": "train_03527", "split": "train", "clip_key": "titan_clip_397_000444_movie", "source": {"subset": "titan", "scenario": "clip_397", "frame": "000444"}, "frames": ["titan_clip_397_000444_movie_t-3.jpg", "titan_clip_397_000444_movie_t-2.jpg", "titan_clip_397_000444_movie_t-1.jpg", "titan_clip_397_000444_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian.", "environment_perception": "A narrow urban commercial street has a single through lane with no median and worn but intact asphalt, and traffic is light and slow-moving. A pedestrian wearing a white shirt crosses from left to right directly in front of the ego car, stepping into the lane and briefly blocking its path. A white car ahead in the same lane rolls slowly up the street, constrained by the pedestrian's crossing. A white work truck stands along the left curb beside construction cones, protruding slightly and narrowing the lane near the ego vehicle.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and crossing the street in front of the ego car. The pedestrian is entering the vehicle's path, so you should yield to avoid a collision."}
{"id": "train_03528", "split": "train", "clip_key": "titan_clip_1335_000450_movie", "source": {"subset": "titan", "scenario": "clip_1335", "frame": "000450"}, "frames": ["titan_clip_1335_000450_movie_t-3.jpg", "titan_clip_1335_000450_movie_t-2.jpg", "titan_clip_1335_000450_movie_t-1.jpg", "titan_clip_1335_000450_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "A narrow urban commercial street with a single mixed-traffic lane has smooth pavement and no median, and motor traffic is absent so flow is light. Two pedestrians in white shirts walk toward the ego vehicle along the right edge because potted plants and shop displays occupy the sidewalk, and they may drift into the ego path. A lone pedestrian farther ahead near the center-right of the lane walks away in the same direction as the ego vehicle, mildly constraining its pace. Several other pedestrians farther ahead linger or move along storefronts on both sides, staying near the edges without entering the lane. Potted plants and signboards line the right side and encroach on space, narrowing the usable roadway.", "hazard_reasoning": "There are two pedestrians wearing white shirts and walking on the right side of the road towards the ego car, because there are potted plants on the sidewalk. They may step into the driving lane to avoid the plants, posing a collision risk, so the driver should be aware of pedestrians ahead."}
{"id": "train_03529", "split": "train", "clip_key": "2020-0217-110854_058467_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "058467"}, "frames": ["2020-0217-110854_058467_movie_t-3.jpg", "2020-0217-110854_058467_movie_t-2.jpg", "2020-0217-110854_058467_movie_t-1.jpg", "2020-0217-110854_058467_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban three-lane road runs beneath an elevated roadway; the asphalt is dry and traffic is heavy and slow. A silver van directly ahead in the ego lane is stopped with brake lights on, blocking the ego vehicle's path. To the left, a white sedan in the adjacent lane creeps forward and passes the stopped van. Farther ahead in the center lane, a white coupe moves slowly with the queue. A metal guardrail borders the right edge beside close support columns, leaving only a narrow shoulder.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego car lane. The stopped van blocks the path and may cause a rear-end collision if not anticipated, so the driver should stop immediately to avoid collision."}
{"id": "train_03530", "split": "train", "clip_key": "2020-0131-103016_012405_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "012405"}, "frames": ["2020-0131-103016_012405_movie_t-3.jpg", "2020-0131-103016_012405_movie_t-2.jpg", "2020-0131-103016_012405_movie_t-1.jpg", "2020-0131-103016_012405_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban corridor with mid-rise buildings funnels traffic through a work zone; temporary barriers line the right side and steel plates patch the uneven surface, while flow is light to moderate. A black van drives ahead in the ego lane and pulls away from the camera, guiding the pace along the narrowed path. A white van is parked at the left curb beside scaffolding, close to the lane but stationary. Inside the coned-off area on the right, an excavator sits idle without encroaching on traffic. A distant traffic signal shows green, and the lane ahead of the ego vehicle remains clear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03531", "split": "train", "clip_key": "titan_clip_1148_000570_movie", "source": {"subset": "titan", "scenario": "clip_1148", "frame": "000570"}, "frames": ["titan_clip_1148_000570_movie_t-3.jpg", "titan_clip_1148_000570_movie_t-2.jpg", "titan_clip_1148_000570_movie_t-1.jpg", "titan_clip_1148_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian on the road.", "environment_perception": "An urban residential scene shows a very narrow two-way road with edge lines but no sidewalks, tightly bordered by buildings and fences; the dry pavement looks intact and traffic is light with no nearby moving vehicles. On the right edge ahead, a pedestrian wearing a yellow T-shirt and carrying an umbrella and handbag walks toward the ego car along the road because there is no sidewalk, partially occupying the lane and constraining the ego's pace.", "hazard_reasoning": "There is a pedestrian wearing a yellow t-shirt, carrying an umbrella, and carrying a handbag, walking on the right side of the road towards the ego car, because there is no sidewalk. Drivers should be aware because the pedestrian is walking towards the vehicle without a sidewalk, posing a collision risk."}
{"id": "train_03532", "split": "train", "clip_key": "2020-0129-105040_099186_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "099186"}, "frames": ["2020-0129-105040_099186_movie_t-3.jpg", "2020-0129-105040_099186_movie_t-2.jpg", "2020-0129-105040_099186_movie_t-1.jpg", "2020-0129-105040_099186_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial carries two lanes in the ego direction with opposing lanes on the right, no physical median, and dry, smooth pavement; traffic is moderate with vehicles queuing at a signalized intersection ahead. A large box truck just ahead in the right lane slows to a stop at the crosswalk, partly obscuring the view of the junction. Farther ahead in the ego lane, a small white pickup decelerates toward the stop line, setting the ego vehicle's pace. A silver car in the right lane beside the pickup lines up to continue straight through the intersection. Overhead traffic lights and signage span the roadway, and a parked red car at the left curb near the camera reduces shoulder space.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03533", "split": "train", "clip_key": "2020-0226-101332_023359_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-101332_023359_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-101332_023359_movie_t-3_augB1.jpg", "2020-0226-101332_023359_movie_t-2_augB1.jpg", "2020-0226-101332_023359_movie_t-1_augB1.jpg", "2020-0226-101332_023359_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs between mid-rise buildings, with a painted gore acting as a median; the pavement is dry and traffic is moderate and moving smoothly. Despite the caption, no black pickup truck is visible slowing in the ego lane, and there is no congestion. A white SUV ahead in the ego lane travels at a steady pace, following the line of cars farther ahead that sets the pace. A small green truck to the right moves in the adjacent lane at a similar speed and may edge left near the gore, potentially entering the ego lane. Another green truck is stopped along the right curb, so passing traffic keeps left as it goes by.", "hazard_reasoning": "There is a black pickup truck slowing in the ego lane, because there is traffic congestion. Slow down to adjust to the congested traffic and maintain a safe following distance."}
{"id": "train_03534", "split": "train", "clip_key": "titan_clip_1080_000120_movie", "source": {"subset": "titan", "scenario": "clip_1080", "frame": "000120"}, "frames": ["titan_clip_1080_000120_movie_t-3.jpg", "titan_clip_1080_000120_movie_t-2.jpg", "titan_clip_1080_000120_movie_t-1.jpg", "titan_clip_1080_000120_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow two-way urban residential street with edge lines and no median stretches straight ahead, pavement smooth and traffic very light with no moving vehicles in either direction. A pedestrian wearing a yellow shirt walks ahead on the right side of the road away from the ego vehicle, staying near the curb but within the roadway and thus relevant to the ego lane. Parked cars sit in a recessed garage and along the left side, remaining stationary and not obstructing the path. Buildings line the left while a fenced wall with green railings borders the right, and no salient traffic signals or speed signs are visible.", "hazard_reasoning": "A pedestrian wearing a yellow shirt is walking on the right side of the road, away from the ego car. The driver should be aware of the pedestrian as they might step into the vehicle's path unexpectedly."}
{"id": "train_03535", "split": "train", "clip_key": "2020-0228-102841_012358_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "012358"}, "frames": ["2020-0228-102841_012358_movie_t-3.jpg", "2020-0228-102841_012358_movie_t-2.jpg", "2020-0228-102841_012358_movie_t-1.jpg", "2020-0228-102841_012358_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban commercial street with multiple same-direction lanes and no median has dry pavement and heavy congestion, keeping traffic largely stopped. A black sedan directly ahead in the ego lane is stationary because the queue extends forward, holding the ego car. On the left, a large delivery truck stands at the curb with its rear door open and crates visible, occupying much of the adjacent lane and narrowing the passage. To the right, a silver cargo truck beside the ego vehicle inches forward in its lane and could edge toward the ego path as gaps shift. No signals are clearly visible.", "hazard_reasoning": "There is a black sedan stopped in the ego lane in front of the ego car due to traffic congestion ahead. The driver should follow the vehicle ahead to maintain safe distance and avoid collision."}
{"id": "train_03536", "split": "train", "clip_key": "2020-0212-150403_019305_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "019305"}, "frames": ["2020-0212-150403_019305_movie_t-3.jpg", "2020-0212-150403_019305_movie_t-2.jpg", "2020-0212-150403_019305_movie_t-1.jpg", "2020-0212-150403_019305_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with no physical median and smooth pavement shows moderate flow that bunches slightly ahead. A black SUV directly in front in the ego lane slows because of a short queue of vehicles ahead, constraining the ego car's pace. To the right, a silver sedan and other oncoming cars travel toward the camera in their lane, passing close to the center line but staying clear of the ego lane. On the far right, a cyclist moves along the sidewalk behind a guardrail without interacting with traffic.", "hazard_reasoning": "There's a black SUV slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adapt to the reduced traffic flow."}
{"id": "train_03537", "split": "train", "clip_key": "titan_clip_1175_000198_movie", "source": {"subset": "titan", "scenario": "clip_1175", "frame": "000198"}, "frames": ["titan_clip_1175_000198_movie_t-3.jpg", "titan_clip_1175_000198_movie_t-2.jpg", "titan_clip_1175_000198_movie_t-1.jpg", "titan_clip_1175_000198_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead.", "environment_perception": "A narrow urban side street with no marked lanes runs between buildings, bordered by construction fencing and cones; the pavement is worn and traffic is light with no moving vehicles. A pedestrian in a white shirt and black pants approaches from ahead toward the ego car along the center of the roadway, potentially entering its path. Two other pedestrians farther ahead keep to the left-side coned corridor and walk away, creating minimal interaction. On the near right, a white truck is stopped at the curb with its body protruding into the roadway, narrowing the usable space. Temporary barriers and cones define a constrained passage through an active work zone.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking toward the ego car. The pedestrian is approaching the vehicle's path at a crosswalk, so the driver should yield to allow safe crossing."}
{"id": "train_03538", "split": "train", "clip_key": "titan_clip_64_000048_movie", "source": {"subset": "titan", "scenario": "clip_64", "frame": "000048"}, "frames": ["titan_clip_64_000048_movie_t-3.jpg", "titan_clip_64_000048_movie_t-2.jpg", "titan_clip_64_000048_movie_t-1.jpg", "titan_clip_64_000048_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "A narrow urban two-way street with no centerline runs between tall buildings; the asphalt is smooth and traffic is light as the car proceeds straight along the left side. On the right side ahead, two pedestrians in blue shirts walk toward the car along the curb, close to the roadway. An oncoming cyclist rides down the middle toward the car, passing close because of the limited width. Far ahead in the same direction, a small box truck moves slowly, constraining the available space and pace. Bicycles are parked along both curbs but remain outside the travel lane.", "hazard_reasoning": "There are two pedestrians wearing blue shirts, walking on the right side of the road, towards the ego car. The driver should carefully manoeuvre around these pedestrians to avoid a potential collision as they move closer to the vehicle's path."}
{"id": "train_03539", "split": "train", "clip_key": "2020-0220-102630_028942_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_028942_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_028942_movie_t-3_augB1.jpg", "2020-0220-102630_028942_movie_t-2_augB1.jpg", "2020-0220-102630_028942_movie_t-1_augB1.jpg", "2020-0220-102630_028942_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the scooter", "environment_perception": "An urban street with two same-direction lanes has smooth pavement but slow, heavy flow where roadwork narrows the left lane ahead. A black scooter is stopped directly ahead in the ego lane because construction blocks the lane, holding the ego car. Another scooter farther ahead near the center line edges forward to merge right around the obstruction, potentially entering the ego path. A white car in the adjacent right lane creeps past the scooters, reducing gaps for merging from the blocked lane. A large box truck queues ahead in the right lane while a work truck and orange cones occupy the left side, creating the choke point. Several workers and pedestrians stand near the work area on the left sidewalk, adding visual clutter close to the roadway.", "hazard_reasoning": "There is a black scooter stopped in the ego lane because it is blocked due to on-going construction, in front of the ego car. The driver should carefully manoeuvre around the scooter to avoid collision due to the lane obstruction."}
{"id": "train_03540", "split": "train", "clip_key": "titan_clip_662_000288_movie", "source": {"subset": "titan", "scenario": "clip_662", "frame": "000288"}, "frames": ["titan_clip_662_000288_movie_t-3.jpg", "titan_clip_662_000288_movie_t-2.jpg", "titan_clip_662_000288_movie_t-1.jpg", "titan_clip_662_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of pedestrians", "environment_perception": "An urban narrow two-way street without center lines runs between close buildings, the pavement smooth and traffic light. A white car ahead in the oncoming direction moves toward us near the middle of the road, constraining our pace on the narrow roadway. On the left, a group of pedestrians stands close together at the vending machine outside a small shop, gathered there and staying off the lane. On the right, two pedestrians wait by the curb beside a glass-fronted building, lingering near our path and potentially stepping out. No signals or notable signs are prominent, and there are no parked vehicles intruding into the carriageway.", "hazard_reasoning": "There are multiple pedestrians in a group, standing on the left side of the road, away from the ego car, because of the vending machine on the left side. They might step onto the roadway unexpectedly near the vending machine, so the driver should be cautious."}
{"id": "train_03541", "split": "train", "clip_key": "2020-0213-143552_034417_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "034417"}, "frames": ["2020-0213-143552_034417_movie_t-3.jpg", "2020-0213-143552_034417_movie_t-2.jpg", "2020-0213-143552_034417_movie_t-1.jpg", "2020-0213-143552_034417_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial under an elevated expressway runs ahead with three same-direction lanes and a diverging right-side lane; pavement is dry and traffic is slow near a junction. A large white box truck is stopped in the ego lane ahead for the red traffic light, directly blocking the path. A small black car just ahead in the lane to the left creeps forward in the queue beside the truck, close to the ego vehicle. A white van in the adjacent right lane approaches the junction at low speed, moving past the stopped line and running alongside the ego lane. Parked cars line the left curb, and bridge pillars and guardrails border the roadway.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of the red traffic lights ahead. The driver needs to stop to avoid colliding with the halted truck blocking the lane."}
{"id": "train_03542", "split": "train", "clip_key": "2020-0214-145407_047184_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "047184"}, "frames": ["2020-0214-145407_047184_movie_t-3.jpg", "2020-0214-145407_047184_movie_t-2.jpg", "2020-0214-145407_047184_movie_t-1.jpg", "2020-0214-145407_047184_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection with good pavement and painted markings is ahead, with moderate flow on the cross street while the ego direction waits. The ego car is stopped at the line in left-side traffic. A black sedan directly ahead in the ego lane stands still at the stop line because the traffic signal shows red, holding the ego vehicle. A dark car waits in the adjacent right lane alongside the ego, also stationary. Several pedestrians are on the left sidewalk near the crosswalk, waiting and not entering the road. Vehicles on the cross street move across from left to right in front of the intersection while the ego approach remains red.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid a collision and obey the traffic signal."}
{"id": "train_03543", "split": "train", "clip_key": "2020-0213-143552_067896_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "067896"}, "frames": ["2020-0213-143552_067896_movie_t-3.jpg", "2020-0213-143552_067896_movie_t-2.jpg", "2020-0213-143552_067896_movie_t-1.jpg", "2020-0213-143552_067896_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs beside a low planted median on the right that separates oncoming traffic; the pavement is smooth and traffic is moderate, easing to a slower pace. A white box truck directly ahead in the ego lane slows, constraining the ego car's speed. A small white van travels slightly ahead in the left lane, maintaining speed without encroaching on the ego lane. Parked cars line the left-side dealerships but remain outside the roadway.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision when the truck decelerates further."}
{"id": "train_03544", "split": "train", "clip_key": "2020-0127-132751_078742_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0127-132751_078742_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0127-132751_078742_movie_t-3_augB1.jpg", "2020-0127-132751_078742_movie_t-2_augB1.jpg", "2020-0127-132751_078742_movie_t-1_augB1.jpg", "2020-0127-132751_078742_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban four-lane road with a narrow raised median and smooth dry asphalt extends toward an intersection, and traffic is light with steady flow. Ahead near the left edge of the ego lane, a woman with a child crosses from the left to the right in the middle of the roadway, moving across the ego vehicle's path. In the oncoming lanes to the right, a white bus approaches at a constant speed while remaining in its lane. Far ahead in the same direction, a small car continues away in the left lane with ample gap. An overhead pedestrian footbridge and suspended traffic signals appear before the junction in the distance.", "hazard_reasoning": "There is a woman and a child crossing the street in the middle of the road, from the left to the right side of the road. The driver must stop to avoid a collision with the crossing pedestrians."}
{"id": "train_03545", "split": "train", "clip_key": "titan_clip_668_000546_movie", "source": {"subset": "titan", "scenario": "clip_668", "frame": "000546"}, "frames": ["titan_clip_668_000546_movie_t-3.jpg", "titan_clip_668_000546_movie_t-2.jpg", "titan_clip_668_000546_movie_t-1.jpg", "titan_clip_668_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for crossing pedestrians", "environment_perception": "An urban commercial street with a narrow two-way single-lane road has smooth pavement, no median, and light, slow traffic. The ego vehicle proceeds in the left lane past closely spaced storefronts. Ahead to the right, an oncoming white scooter approaches near the center of the roadway and continues straight, passing close to the ego vehicle. Along the right edge, a bicycle with a passenger rides toward the ego vehicle in the opposing lane. Along the left edge near the ego lane, three pedestrians-one in a black dress, one in a blue dress, and one carrying a handbag-walk both away from and toward the ego car, close to the travel lane and possibly entering it.", "hazard_reasoning": "There are three pedestrians wearing a black dress, blue dress, and a handbag walking along the left side of the lane, both away and toward the ego car. As they move unpredictably near the vehicle's path, the driver should stop to ensure pedestrian safety."}
{"id": "train_03546", "split": "train", "clip_key": "2020-0220-102630_121970_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "121970"}, "frames": ["2020-0220-102630_121970_movie_t-3.jpg", "2020-0220-102630_121970_movie_t-2.jpg", "2020-0220-102630_121970_movie_t-1.jpg", "2020-0220-102630_121970_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid rear-end collision", "environment_perception": "A suburban two-way street with one lane each way and a solid yellow centerline has dry pavement and heavy flow ahead while oncoming traffic remains steady. A black minivan directly ahead in the ego lane is stopped because of traffic congestion farther up, holding the ego vehicle. An oncoming black SUV in the right lane rolls past at low speed near the centerline as it threads by the queue. Another oncoming van follows the SUV, also moving slowly through the constricted space. Buildings and utility poles line both sides of the road.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision due to the halted vehicle."}
{"id": "train_03547", "split": "train", "clip_key": "titan_clip_201_000324_movie", "source": {"subset": "titan", "scenario": "clip_201", "frame": "000324"}, "frames": ["titan_clip_201_000324_movie_t-3.jpg", "titan_clip_201_000324_movie_t-2.jpg", "titan_clip_201_000324_movie_t-1.jpg", "titan_clip_201_000324_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "be aware of the pedestrian", "environment_perception": "The scene is an urban commercial street with a single narrow lane for the ego vehicle, bollards lining both sides and close shopfronts; the pavement looks smooth and traffic is very light with no vehicles ahead. A pedestrian ahead on the right at the intersection, wearing a white shirt and carrying a handbag, walks away from the ego car along the curb and may come near the lane edge. Another pedestrian on the left close to the camera walks along the storefront toward the camera, remaining on the sidewalk. A third person farther right proceeds in the same direction without entering the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, walking on the right side of the intersection, away from the ego car. The driver should be aware that the pedestrian walking near the intersection might enter the roadway unexpectedly, especially as the road curves to the right and visibility is reduced."}
{"id": "train_03548", "split": "train", "clip_key": "2020-0127-132751_018437_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "018437"}, "frames": ["2020-0127-132751_018437_movie_t-3.jpg", "2020-0127-132751_018437_movie_t-2.jpg", "2020-0127-132751_018437_movie_t-1.jpg", "2020-0127-132751_018437_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated structure, with lanes in the same direction and no median visible; the pavement is dry and well marked, and traffic flows slowly in a dense queue. Ahead in the ego lane, a white hatchback slows because of congestion and sets the pace for the ego vehicle. In the adjacent right lane slightly ahead, a line of cars including a black sedan and a white van creeps forward parallel to the ego lane, limiting openings to change lanes. On the left sidewalk, a few pedestrians linger near storefronts and railings while staying off the roadway.", "hazard_reasoning": "There's a white hatchback slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should reduce speed to maintain a safe following distance as traffic congestion may necessitate further deceleration."}
{"id": "train_03549", "split": "train", "clip_key": "titan_clip_923_000048_movie", "source": {"subset": "titan", "scenario": "clip_923", "frame": "000048"}, "frames": ["titan_clip_923_000048_movie_t-3.jpg", "titan_clip_923_000048_movie_t-2.jpg", "titan_clip_923_000048_movie_t-1.jpg", "titan_clip_923_000048_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street without a marked centerline runs between buildings, the pavement smooth, with light traffic and some constriction from roadside construction. Directly ahead, a pedestrian in a green T-shirt carrying an umbrella crosses midblock toward the right side, moving through the ego-vehicle's lane and constraining its path. Farther ahead in the same direction, a small silver minivan travels slowly near the center of the roadway. On the left, a white van is stopped beside scaffolding with a person standing next to its rear, narrowing the passage. People cluster on the right by a building entrance with cones and a ramp, and no oncoming vehicles are visible.", "hazard_reasoning": "A pedestrian with a green t-shirt and an umbrella is crossing in the middle of the road to the right side. The driver should slow down to avoid colliding with the crossing pedestrian."}
{"id": "train_03550", "split": "train", "clip_key": "2020-0228-150133_018744_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "018744"}, "frames": ["2020-0228-150133_018744_movie_t-3.jpg", "2020-0228-150133_018744_movie_t-2.jpg", "2020-0228-150133_018744_movie_t-1.jpg", "2020-0228-150133_018744_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with one narrow lane per direction and no median passes shops and apartments; the pavement is dry and traffic in the ego lane is stopped while the opposing lane looks open. Immediately ahead, a silver van is stopped in the ego lane, halted by congestion ahead and blocking the ego car's path. Farther ahead in the same lane, a large truck also waits in the queue, reinforcing the stoppage and controlling the pace. No oncoming vehicles or pedestrians are visible near the side street on the right. A 40 km/h speed-limit sign and a parking-restriction sign stand on the left sidewalk.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane., because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_03551", "split": "train", "clip_key": "2020-0228-150133_004044_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "004044"}, "frames": ["2020-0228-150133_004044_movie_t-3.jpg", "2020-0228-150133_004044_movie_t-2.jpg", "2020-0228-150133_004044_movie_t-1.jpg", "2020-0228-150133_004044_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with a single lane in each direction and no median runs between midrise buildings; the asphalt appears dry and intact, and overall flow is light but slows near the camera. A white box truck is stopped directly ahead in the ego lane, blocking the path as described and causing the ego vehicle to wait. Along the curb to the right, another white truck stands parked facing the same direction, occupying the shoulder and limiting clearance beside the blockage. In the opposing lane to the right, a smaller truck approaches at low speed, occupying the oncoming lane and reducing any gap for passing.", "hazard_reasoning": "There is a white truck stopped, in the ego lane, in front of the ego-car. Follow the vehicle ahead to maintain a safe distance and avoid a collision."}
{"id": "train_03552", "split": "train", "clip_key": "2020-0203-114632_093769_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "093769"}, "frames": ["2020-0203-114632_093769_movie_t-3.jpg", "2020-0203-114632_093769_movie_t-2.jpg", "2020-0203-114632_093769_movie_t-1.jpg", "2020-0203-114632_093769_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane same-direction road runs under an elevated structure, with a curb and fence tight on the right and hedges on the left; the pavement looks smooth and traffic is light. Ahead in the ego lane, a white van travels steadily in the right lane, maintaining its course and effectively setting the ego vehicle's pace. No other moving vehicles are apparent nearby and no oncoming flow is visible. Close concrete pillars and guard fencing line the right edge, leaving only a narrow shoulder.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03553", "split": "train", "clip_key": "2020-0203-154554_031650_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_031650_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_031650_movie_t-3_augB1.jpg", "2020-0203-154554_031650_movie_t-2_augB1.jpg", "2020-0203-154554_031650_movie_t-1_augB1.jpg", "2020-0203-154554_031650_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road under elevated structures has one lane each direction, a yellow centerline, a concrete wall on the left, and a right-side guardrail; the pavement looks smooth and traffic is moderate with a steady oncoming stream. A gray semi truck ahead in the ego lane slows because of traffic congestion ahead, constraining the ego car's pace. In the oncoming lane to the right, a silver van approaches and continues straight past at a steady speed. Farther ahead in the same oncoming lane, a small white truck follows the van and proceeds straight. No salient signals or signs are visible.", "hazard_reasoning": "There is a gray semi truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Slow down to maintain a safe following distance and prevent a collision."}
{"id": "train_03554", "split": "train", "clip_key": "2020-0203-114632_066342_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "066342"}, "frames": ["2020-0203-114632_066342_movie_t-3.jpg", "2020-0203-114632_066342_movie_t-2.jpg", "2020-0203-114632_066342_movie_t-1.jpg", "2020-0203-114632_066342_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of truck merging right", "environment_perception": "An urban elevated bridge carries a multi-lane two-way road with double orange centerlines and smooth pavement, and traffic remains light and moving steadily. A white truck ahead of the ego vehicle shifts right to change into the adjacent lane. On the far side of the divider, several oncoming vehicles, including a blue truck, continue toward the camera at a steady pace without affecting the ego path. A yellow diamond merge-warning sign stands on the left, and large white caution markings are painted on the roadway.", "hazard_reasoning": "There is a white truck in front of the ego car, changing to the right lane. The driver should be aware because the truck's lane change could encroach on the ego-vehicle's path and require prompt adjustment."}
{"id": "train_03555", "split": "train", "clip_key": "2020-0218-103119_053373_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "053373"}, "frames": ["2020-0218-103119_053373_movie_t-3.jpg", "2020-0218-103119_053373_movie_t-2.jpg", "2020-0218-103119_053373_movie_t-1.jpg", "2020-0218-103119_053373_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway as the ego car approaches a signalized intersection with a painted island and smooth pavement; traffic is moderate and slows near the junction, with a short queue on the far side. A white box truck directly ahead in the ego lane slows because congestion builds beyond the intersection, and it controls the ego vehicle's pace. A red car ahead-left in the adjacent lane moves slowly in parallel toward the junction and remains in its lane without merging. A small flatbed truck in the right-turn lane to the right decelerates near the island as it prepares to turn, staying clear of the ego path. Overhead traffic lights are visible at the intersection.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a rear-end collision as traffic ahead is congested."}
{"id": "train_03556", "split": "train", "clip_key": "2020-0207-101955_005753_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "005753"}, "frames": ["2020-0207-101955_005753_movie_t-3.jpg", "2020-0207-101955_005753_movie_t-2.jpg", "2020-0207-101955_005753_movie_t-1.jpg", "2020-0207-101955_005753_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban left-hand-traffic arterial with two lanes in each direction runs between mid-rise buildings; the pavement looks dry and smooth, and overall traffic is moderate and steady. A white mini truck directly ahead in the ego lane accelerates away, briefly setting the ego car's pace. To its left, a white van in the curb lane travels slightly slower, while a scooter filters forward through the gap between the van and the truck and continues ahead where it could slip into the ego lane. On the right side of the roadway, an oncoming black sedan proceeds in its opposite-direction lane across the center lines and passes without interaction.", "hazard_reasoning": "There is a white mini truck accelerating in front of the ego car, in the ego lane. The driver should follow the vehicle ahead to react promptly to the upcoming signal change at the intersection."}
{"id": "train_03557", "split": "train", "clip_key": "2020-0207-151349_080181_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "080181"}, "frames": ["2020-0207-151349_080181_movie_t-3.jpg", "2020-0207-151349_080181_movie_t-2.jpg", "2020-0207-151349_080181_movie_t-1.jpg", "2020-0207-151349_080181_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated structure with two same-direction lanes and a right-side guardrail; the pavement is smooth and traffic is moderate, beginning to move after stopping at a signal. A brown truck directly ahead in the ego lane begins to roll forward as the light turns green, setting the ego vehicle's pace. In the adjacent left lane, a gray sedan alongside accelerates straight past the ego car, limiting a lane change. Farther ahead in the left lane, a white box van also pulls away from the intersection and continues straight. Pedestrians crowd the left sidewalk near the intersection, staying behind the curb, and the overhead traffic light shows green.", "hazard_reasoning": "There is a brown truck beginning to move forward in front of the ego car in the ego lane, because the traffic light has turned green. You should start moving promptly to follow the truck and maintain traffic flow."}
{"id": "train_03558", "split": "train", "clip_key": "2020-0214-102601_025998_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0214-102601_025998_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0214-102601_025998_movie_t-3_augB1.jpg", "2020-0214-102601_025998_movie_t-2_augB1.jpg", "2020-0214-102601_025998_movie_t-1_augB1.jpg", "2020-0214-102601_025998_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban arterial with four or more same-direction lanes and smooth pavement carries heavy, slow-moving traffic without a physical median. The ego car proceeds in a central lane. A green sedan directly ahead in the ego lane slows because a small box truck farther ahead in the same lane is also slowing, and this combination constrains the ego vehicle's pace. A large white coach bus runs slightly ahead in the lane to the right, creeping forward parallel to the ego car and limiting any move to the right. Farther ahead-left, a blue van continues steadily within its lane amid the queue and does not encroach on the ego path.", "hazard_reasoning": "There is a green sedan slowing in front of the ego car, because of a truck slowing ahead in the ego lane. The ego vehicle should slow down to maintain a safe distance and adapt to the reduced speed ahead."}
{"id": "train_03559", "split": "train", "clip_key": "titan_clip_485_000234_movie", "source": {"subset": "titan", "scenario": "clip_485", "frame": "000234"}, "frames": ["titan_clip_485_000234_movie_t-3.jpg", "titan_clip_485_000234_movie_t-2.jpg", "titan_clip_485_000234_movie_t-1.jpg", "titan_clip_485_000234_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian walking on sidewalk", "environment_perception": "An urban side street in Japan appears narrow and two-way with no median; the asphalt is smooth and the flow is light, with only stationary vehicles ahead. On the left edge near the ego lane, a person wearing a black T-shirt and black pants walks away from the ego car along the curb, close to the roadway. A small group of pedestrians waits by a building entrance on the left, lingering near the curb and doorway. A black sedan is stopped on the right shoulder just ahead, and another car stands farther ahead on the right, both narrowing the usable lane but remaining stationary. A long construction wall lines the right, creating a constrained corridor.", "hazard_reasoning": "There is a person wearing a black T-shirt with black pant, walking away from the ego car on the left side of the ego car. The pedestrian could unexpectedly step onto the road, so the driver should remain alert and be prepared to adjust speed or direction."}
{"id": "train_03560", "split": "train", "clip_key": "2020-0127-132751_068268_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "068268"}, "frames": ["2020-0127-132751_068268_movie_t-3.jpg", "2020-0127-132751_068268_movie_t-2.jpg", "2020-0127-132751_068268_movie_t-1.jpg", "2020-0127-132751_068268_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with multiple marked lanes and red-painted center sections appears well paved, and traffic flows smoothly. A white van directly ahead in the ego lane is merging in front of the ego car as the way in front of it remains open. Slightly ahead to the right, a dark minivan travels in the adjacent same-direction lane and continues away without affecting the ego vehicle's path. On the far right, two oncoming cars approach in their lanes, remaining separated from the ego lane by the central markings. A signalized intersection is visible ahead, with standard overhead traffic lights and roadside railings.", "hazard_reasoning": "There is a white van diving in front of the ego car in the ego lane, because the road ahead is clear. The van's sudden merge may require the driver to adjust speed and maintain a safe following distance."}
{"id": "train_03561", "split": "train", "clip_key": "2020-0226-140503_040246_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "040246"}, "frames": ["2020-0226-140503_040246_movie_t-3.jpg", "2020-0226-140503_040246_movie_t-2.jpg", "2020-0226-140503_040246_movie_t-1.jpg", "2020-0226-140503_040246_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the same direction has smooth wet pavement and a curbside line of cones on the left; traffic is heavy and slow with queues ahead. A gray van directly ahead in the ego lane is stopped, waiting to turn left, blocking the lane and holding the ego vehicle. In the adjacent right lane, a stream of cars moves slowly forward, overtaking the ego and leaving little space to merge. Farther ahead under an elevated structure, more same direction vehicles queue and creep. The cones narrow the left margin but do not intrude into the lane.", "hazard_reasoning": "There is a gray van stopped in the ego lane because it is waiting to turn left. Because the van blocks the lane, the driver should stop to avoid a rear-end collision."}
{"id": "train_03562", "split": "train", "clip_key": "titan_clip_742_000876_movie", "source": {"subset": "titan", "scenario": "clip_742", "frame": "000876"}, "frames": ["titan_clip_742_000876_movie_t-3.jpg", "titan_clip_742_000876_movie_t-2.jpg", "titan_clip_742_000876_movie_t-1.jpg", "titan_clip_742_000876_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban two-way street with no median runs between mid-rise buildings, the pavement dry and intact, and traffic is light with no oncoming vehicles visible. A white truck is parked on the left in the ego lane, partially blocking it, and another utility truck is stopped just ahead on the same side, further narrowing the available space. A road worker stands in the ego lane beside the nearest truck and moves slowly while carrying equipment, directly occupying the ego path. A pedestrian farther ahead walks along the right sidewalk away from the camera, remaining out of the roadway. No salient signals or signs are visible, and the parked trucks and worker form a small roadside work zone that constrains progress.", "hazard_reasoning": "There is a white truck parked on the left side of the road, in the ego lane. It blocks the driving lane and limits the driver's path, so the driver should manoeuvre carefully around the truck to avoid collision."}
{"id": "train_03563", "split": "train", "clip_key": "titan_clip_582_000030_movie", "source": {"subset": "titan", "scenario": "clip_582", "frame": "000030"}, "frames": ["titan_clip_582_000030_movie_t-3.jpg", "titan_clip_582_000030_movie_t-2.jpg", "titan_clip_582_000030_movie_t-1.jpg", "titan_clip_582_000030_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked car.", "environment_perception": "An urban narrow two-way street with close-set buildings, the ego vehicle traveling in the left lane on smooth pavement and light traffic. A white hatchback is parked on the right side of the road along the curb, remaining stationary and slightly narrowing the oncoming side. A small white truck is farther ahead near the center of the lane, continuing straight in the same direction at low speed and staying in front of the ego vehicle. No pedestrians or signals are prominent, and no lane dividers beyond edge lines are visible. Curbside items such as barrels and parked bicycles sit close to the roadway but do not extend into the lane.", "hazard_reasoning": "There is a white hatchback parked on the right side of the road. This parked vehicle reduces available lane width and obscures part of the roadway, so the driver should manoeuvre carefully around it to avoid collision."}
{"id": "train_03564", "split": "train", "clip_key": "2020-0205-103411_082884_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "082884"}, "frames": ["2020-0205-103411_082884_movie_t-3.jpg", "2020-0205-103411_082884_movie_t-2.jpg", "2020-0205-103411_082884_movie_t-1.jpg", "2020-0205-103411_082884_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban arterial with two lanes in the ego direction and oncoming lanes to the right is separated by double yellow lines on smooth, dry pavement, and traffic is halted at an intersection. The signal ahead shows red. A white minivan is stopped directly in front in the ego lane because of the red traffic light ahead, holding the ego vehicle in place. In the adjacent left lane, a white high-roof van waits slightly ahead at the same light, limiting room to maneuver. A pedestrian on the right crosses leftward on the marked crosswalk in front of the queued vehicles.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car in the ego lane, because of the red traffic light ahead. The minivan's stop indicates the traffic light is red and the driver must stop to avoid a collision and obey the signal."}
{"id": "train_03565", "split": "train", "clip_key": "titan_clip_824_000054_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_824_000054_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_824_000054_movie_t-3_augB1.jpg", "titan_clip_824_000054_movie_t-2_augB1.jpg", "titan_clip_824_000054_movie_t-1_augB1.jpg", "titan_clip_824_000054_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way street with no centerline and green-edged shoulders has smooth pavement and light traffic; the ego vehicle proceeds along the left side while parked cars narrow the lane. Ahead in the middle of the road, a woman in a green dress carrying a handbag walks away from the ego vehicle, having moved around a gray hatchback parked on the left, and she occupies the ego path. To the right ahead, another woman with an umbrella walks away near a white car with its rear hatch open, keeping close to the edge but possibly stepping into the lane. On the near left, a man with shopping bags walks along the shoulder in the same direction, close to the travel line.", "hazard_reasoning": "There is a woman carrying a handbag, wearing a green dress, and walking in the middle of the road away from the ego-car because of the gray hatchback car parked on the left side. The driver should manoeuvre carefully around the pedestrian to avoid collision."}
{"id": "train_03566", "split": "train", "clip_key": "2020-0204-103442_033576_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "033576"}, "frames": ["2020-0204-103442_033576_movie_t-3.jpg", "2020-0204-103442_033576_movie_t-2.jpg", "2020-0204-103442_033576_movie_t-1.jpg", "2020-0204-103442_033576_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway corridor with high walls and guardrails on both sides carries a single lane under elevated structures; the pavement looks smooth and traffic is light. A white box truck ahead in the ego lane cruises steadily and gradually pulls away from the camera, partially blocking forward view and matching the note about a white truck driving away. Farther ahead, a small white van continues in the same lane at a similar pace, setting the flow for vehicles behind. No oncoming traffic or pedestrians appear, and no salient signals or speed signs are visible. The lane bends gently right between close barriers, limiting escape space.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The truck can obscure upcoming hazards and may slow or brake unexpectedly, so you should follow at a safe distance."}
{"id": "train_03567", "split": "train", "clip_key": "2020-0218-103119_050426_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "050426"}, "frames": ["2020-0218-103119_050426_movie_t-3.jpg", "2020-0218-103119_050426_movie_t-2.jpg", "2020-0218-103119_050426_movie_t-1.jpg", "2020-0218-103119_050426_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision and obey the red light", "environment_perception": "In a dense urban setting, the ego vehicle waits at a signalized multi-lane intersection on smooth asphalt; traffic is moderate and stopped in the ego direction for a red light. A white truck is stopped directly ahead in the ego lane because the signal is red, constraining the ego car's movement. To the right, a gray car in a right-turn lane waits slightly ahead to turn right and remains outside the ego lane. Cross traffic, including a truck, moves through the junction from right to left while our approach remains halted.", "hazard_reasoning": "A white truck is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to avoid collision with the stopped truck and comply with the red light signal."}
{"id": "train_03568", "split": "train", "clip_key": "2020-0129-144857_069581_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "069581"}, "frames": ["2020-0129-144857_069581_movie_t-3.jpg", "2020-0129-144857_069581_movie_t-2.jpg", "2020-0129-144857_069581_movie_t-1.jpg", "2020-0129-144857_069581_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with dry pavement and a metal guardrail along the right edge carries heavy, mostly stopped traffic. A white sedan directly ahead in the ego lane is stopped because congestion blocks the lanes in front, holding the ego vehicle. To the left, a dark coupe in the adjacent lane creeps forward alongside without changing lanes. Farther ahead in the left lanes, a flatbed truck and a cement mixer move slowly with the queue, keeping the flow sluggish. On the right beyond the guardrail, a silver sedan travels in a separated parallel lane at low speed. Overhead direction signs show middle lanes continuing straight and rightmost lanes designated for right turns.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of traffic congestion ahead. Stop to avoid colliding with halted traffic and maintain safe distance under heavy congestion."}
{"id": "train_03569", "split": "train", "clip_key": "2020-0207-151349_043587_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "043587"}, "frames": ["2020-0207-151349_043587_movie_t-3.jpg", "2020-0207-151349_043587_movie_t-2.jpg", "2020-0207-151349_043587_movie_t-1.jpg", "2020-0207-151349_043587_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multilane road runs beneath an elevated expressway, the pavement is smooth, a solid yellow line separates lanes, and a narrow left-side lane is divided by bollards and a curb; traffic is heavy and slow. A white sedan directly ahead in the ego lane is stopped because of congestion and blocks the ego vehicle's path. Farther ahead in the same lane, more cars queue under the viaduct and remain near-stationary, sustaining the jam. In the adjacent right lane, a white minivan slightly ahead creeps forward beside the ego vehicle, continuing past the queue and limiting any opportunity to change lanes. On the far left, a small truck sits in the separated side lane without interacting.", "hazard_reasoning": "There's a white sedan that has stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary vehicle ahead due to congestion."}
{"id": "train_03570", "split": "train", "clip_key": "2020-0129-105040_046901_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "046901"}, "frames": ["2020-0129-105040_046901_movie_t-3.jpg", "2020-0129-105040_046901_movie_t-2.jpg", "2020-0129-105040_046901_movie_t-1.jpg", "2020-0129-105040_046901_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs under an elevated expressway, curving gently right with multiple same-direction lanes, a right-side guardrail median, and dry, well-kept pavement; traffic is light. A white van proceeds ahead in the ego lane through the curve, effectively setting the ego vehicle's pace. A white taxi to the far left moves slightly faster, running briefly alongside before continuing ahead without merging. A pedestrian footbridge spans the road ahead, and large support columns and the guardrail line the right edge, with no notable signals or hazards visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03571", "split": "train", "clip_key": "2020-0127-132751_059752_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "059752"}, "frames": ["2020-0127-132751_059752_movie_t-3.jpg", "2020-0127-132751_059752_movie_t-2.jpg", "2020-0127-132751_059752_movie_t-1.jpg", "2020-0127-132751_059752_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with two same-direction lanes and a painted center line runs straight on dry, well-kept pavement, and traffic moves at a slow to moderate pace. Ahead in the ego lane, a silver sedan slows because a large box truck farther ahead is reducing speed, and this pair sets the pace for the lane. The box truck remains several car lengths beyond the sedan and continues rolling slowly, keeping the gap compressed. Along the left curb, a black boxy minicar is stopped at the edge of the lane, creating a roadside obstruction but not entering traffic. Oncoming lanes are to the right with distant vehicles and no immediate interaction.", "hazard_reasoning": "There is a silver sedan slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The sedan's sudden deceleration suggests the driver needs to reduce speed to maintain a safe following distance."}
{"id": "train_03572", "split": "train", "clip_key": "2020-0127-132751_060691_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "060691"}, "frames": ["2020-0127-132751_060691_movie_t-3.jpg", "2020-0127-132751_060691_movie_t-2.jpg", "2020-0127-132751_060691_movie_t-1.jpg", "2020-0127-132751_060691_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with painted double white centerlines and smooth pavement shows moderate traffic bunching near an intersection. A white sedan directly ahead in the ego lane is stopped for a red light, blocking the ego vehicle's path. Farther ahead in the same lane, a box truck also waits at the light, acting as the lead vehicle for the queue. To the left in an adjacent same-direction lane, a black minivan slows to a stop alongside, remaining parallel and potentially affecting merging space. Farther left, a small white van in the outer lane creeps forward and then halts with the queue. The opposing lanes across the centerlines appear clear nearby while the signal ahead governs the stop.", "hazard_reasoning": "There is a white sedan stopped in the ego lane in front of the ego car, because of a red traffic light. The driver should stop to avoid a rear-end collision with the halted sedan."}
{"id": "train_03573", "split": "train", "clip_key": "titan_clip_316_000126_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_316_000126_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_316_000126_movie_t-3_augB1.jpg", "titan_clip_316_000126_movie_t-2_augB1.jpg", "titan_clip_316_000126_movie_t-1_augB1.jpg", "titan_clip_316_000126_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian in the road", "environment_perception": "A narrow urban street with block paving and no center divider runs between tall storefronts and a parking entrance, and traffic is light with slow movement. Ahead in the ego lane, a white car creeps forward and briefly pauses, setting the pace for the ego vehicle. Farther ahead, a pedestrian in a black dress walks away from the camera in the middle of the roadway, occupying the ego path and influencing the white car's speed. Along the right edge near a parking sign and orange cones, another pedestrian walks in the same direction close to the curb without entering the lane. Cones, a parked bicycle, and a ramp at the parking entrance narrow the usable roadway but no signals or unusual signs are prominent.", "hazard_reasoning": "There is a pedestrian wearing a black dress, walking in the middle of the road, away from the ego car, because of the parked vehicle. The pedestrian's position in the roadway increases collision risk, requiring the driver to yield to avoid an accident."}
{"id": "train_03574", "split": "train", "clip_key": "titan_clip_185_000378_movie", "source": {"subset": "titan", "scenario": "clip_185", "frame": "000378"}, "frames": ["titan_clip_185_000378_movie_t-3.jpg", "titan_clip_185_000378_movie_t-2.jpg", "titan_clip_185_000378_movie_t-1.jpg", "titan_clip_185_000378_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction has smooth pavement and no median, and traffic is light and slows near a zebra crosswalk. The ego vehicle approaches as a box truck is stopped just ahead along the left curb with its rear by the crosswalk, blocking part of the ego lane and constraining progress. On the right side, a pedestrian wearing a blue shirt and backpack crosses leftward on the crosswalk, entering the ego lane. Another pedestrian steps from the left sidewalk and continues to the right across the front of the truck, remaining in the crosswalk. A blue pedestrian crossing sign is visible on the right.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and backpack, crossing at the pedestrian crosswalk, to the right side of the road. The driver must stop to yield right-of-way and prevent a collision with the crossing pedestrian."}
{"id": "train_03575", "split": "train", "clip_key": "2020-0131-103016_042515_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "042515"}, "frames": ["2020-0131-103016_042515_movie_t-3.jpg", "2020-0131-103016_042515_movie_t-2.jpg", "2020-0131-103016_042515_movie_t-1.jpg", "2020-0131-103016_042515_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane intersection with wide zebra crossings and smooth pavement comes into view, with light traffic moving mainly across the junction. The ego car is stopped at the stop line in the left lane as cross traffic flows through. A pedestrian wearing a black jacket and gray pants walks across the near crosswalk from left to right in front of the car, doing so while the ego faces a red light. A black wagon in the center of the intersection travels right to left across the ego's path, indicating the cross street has the green. Distant vehicles continue ahead on their respective streets without affecting the ego.", "hazard_reasoning": "A pedestrian wearing a black jacket and gray pants is crossing at the pedestrian crosswalk to the right side of the road, because of the red light. The pedestrian is entering the vehicle's path against the red signal, requiring you to stop immediately to avoid a collision."}
{"id": "train_03576", "split": "train", "clip_key": "2020-0214-145407_030302_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "030302"}, "frames": ["2020-0214-145407_030302_movie_t-3.jpg", "2020-0214-145407_030302_movie_t-2.jpg", "2020-0214-145407_030302_movie_t-1.jpg", "2020-0214-145407_030302_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated expressway ramp with two same-direction lanes runs between concrete barriers and guardrails; the pavement looks dry and the overall flow is heavy and slow. A silver sedan directly ahead in the ego lane slows because congestion builds on the ramp, constraining the ego car's pace. A black minivan slightly ahead in the lane to the left also crawls and stays close to the vehicle in front, leaving little headway. A white car alongside on the left moves forward past the ego vehicle, briefly reducing lateral space. On a parallel ramp to the right, cars and a truck proceed but are separated by a barrier.", "hazard_reasoning": "There is a silver sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a collision in the congested conditions."}
{"id": "train_03577", "split": "train", "clip_key": "titan_clip_214_000558_movie", "source": {"subset": "titan", "scenario": "clip_214", "frame": "000558"}, "frames": ["titan_clip_214_000558_movie_t-3.jpg", "titan_clip_214_000558_movie_t-2.jpg", "titan_clip_214_000558_movie_t-1.jpg", "titan_clip_214_000558_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street has one lane in each direction, no median, and smooth pavement. Traffic is light as the ego vehicle proceeds in the left lane past a line of parked vans along the left curb that narrows the roadway. Far ahead in the same lane, a white car continues straight at low speed, modestly setting the pace. On the right side, a man wearing a red T-shirt and black pants pushes a cart away from the ego car along the curb beside an open garage, remaining outside the lane but close to it. No prominent traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a man wearing a red t-shirt and black pants and pushing a cart, on the right side of the road, away from the ego car. The pedestrian pushing a cart could veer into the lane unexpectedly, so the driver should slow down to maintain a safe distance and avoid collision."}
{"id": "train_03578", "split": "train", "clip_key": "titan_clip_1144_000330_movie", "source": {"subset": "titan", "scenario": "clip_1144", "frame": "000330"}, "frames": ["titan_clip_1144_000330_movie_t-3.jpg", "titan_clip_1144_000330_movie_t-2.jpg", "titan_clip_1144_000330_movie_t-1.jpg", "titan_clip_1144_000330_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on road", "environment_perception": "A narrow urban alley with a single shared lane runs between close buildings; there is no median or sidewalk and the dry pavement is slightly worn, with light traffic and no moving vehicles. On the right side ahead, a woman wearing a hat and carrying a handbag walks toward the ego vehicle in the roadway because there is no sidewalk, occupying part of the lane and potentially constraining the approach. Along the same edge, several parked bicycles and railings beside a construction wall further narrow the passage. No traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a female pedestrian, carrying a handbag and wearing a hat, walking on the right side of the road, toward the ego car, because there is no sidewalk. The pedestrian is forced into the vehicle's path due to lack of a sidewalk, increasing collision risk and requiring the driver to be aware."}
{"id": "train_03579", "split": "train", "clip_key": "titan_clip_1011_000426_movie", "source": {"subset": "titan", "scenario": "clip_1011", "frame": "000426"}, "frames": ["titan_clip_1011_000426_movie_t-3.jpg", "titan_clip_1011_000426_movie_t-2.jpg", "titan_clip_1011_000426_movie_t-1.jpg", "titan_clip_1011_000426_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around pedestrians", "environment_perception": "An urban intersection outside a convenience store is ahead on a narrow undivided roadway with dry pavement; vehicle traffic is light while pedestrian activity is heavy. Two male pedestrians in black shirts cross right to left on the crosswalk directly in front of the ego-vehicle, occupying its lane and blocking its progress. More pedestrians from both sides enter the crossing ahead and continue walking across the vehicle's path, extending the pause. A black van is stopped at the right curb beyond the crosswalk, narrowing the corner and partly obscuring movement from the side street. A no-entry sign is posted on the right-side street near the corner.", "hazard_reasoning": "There are two male pedestrians in black shirts, crossing the street in a pedestrian crossing, in front of the ego-car. The pedestrians are directly ahead of the ego-vehicle and may enter its path, so the driver should manoeuvre carefully around them."}
{"id": "train_03580", "split": "train", "clip_key": "titan_clip_1287_000576_movie", "source": {"subset": "titan", "scenario": "clip_1287", "frame": "000576"}, "frames": ["titan_clip_1287_000576_movie_t-3.jpg", "titan_clip_1287_000576_movie_t-2.jpg", "titan_clip_1287_000576_movie_t-1.jpg", "titan_clip_1287_000576_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked sedan", "environment_perception": "A narrow urban street curves left between close buildings, with a single forward lane, no visible median, and dry, slightly worn pavement; traffic is light. A yellow sedan is parked on the left side of the road ahead, partly intruding into the lane and narrowing the path. On the right near the camera, two pedestrians walk along the sidewalk, one close to the curb and near the road edge. Far ahead in the same direction, a red bus proceeds around the left bend and continues away. No traffic signals or posted speeds are clearly visible, and there are no other obstacles besides the parked car.", "hazard_reasoning": "There is a yellow sedan parked on the left side of the road. This parked vehicle partially blocks the left lane, requiring the driver to adjust their path to avoid a collision by manoeuvring around it."}
{"id": "train_03581", "split": "train", "clip_key": "titan_clip_1372_000078_movie", "source": {"subset": "titan", "scenario": "clip_1372", "frame": "000078"}, "frames": ["titan_clip_1372_000078_movie_t-3.jpg", "titan_clip_1372_000078_movie_t-2.jpg", "titan_clip_1372_000078_movie_t-1.jpg", "titan_clip_1372_000078_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "A narrow single-lane urban street runs between mid-rise buildings; the pavement is dry and intact, and vehicular traffic is light. A red traffic cone stands on the right side of the ego lane directly ahead, and additional cones and barriers line the right curb, narrowing the usable lane. On the right foreground, a man walks toward the camera partly in the roadway, reducing clearance beside the cones. Near the center ahead, another pedestrian crosses from the left toward the coned area and may enter the ego vehicle's path. Farther ahead on the right, a person walks away along the curb within the coned section and does not affect the lane.", "hazard_reasoning": "There is a red traffic cone on the right side of the ego lane, in front of the ego car. This cone marks a construction zone encroaching into the driving lane, so the driver should carefully manoeuvre around it to maintain safety."}
{"id": "train_03582", "split": "train", "clip_key": "titan_clip_994_000576_movie", "source": {"subset": "titan", "scenario": "clip_994", "frame": "000576"}, "frames": ["titan_clip_994_000576_movie_t-3.jpg", "titan_clip_994_000576_movie_t-2.jpg", "titan_clip_994_000576_movie_t-1.jpg", "titan_clip_994_000576_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down and watch for crossing pedestrians", "environment_perception": "An urban commercial side street with brick paving and no marked lanes or median is lined with shops, and traffic is light with mostly pedestrian movement as the view approaches a small intersection ahead. A pedestrian on the right, wearing black pants and carrying a bag, walks away from the ego vehicle along the curb and remains near the edge of the lane. Another pedestrian ahead in the center walks away within the ego vehicle's path and could constrain its pace. On the left, a pedestrian approaches from the storefront area and drifts toward the roadway, possibly entering the path. No vehicles are immediately ahead or oncoming, and the pavement appears in good condition.", "hazard_reasoning": "There is a pedestrian wearing black pants, carrying a bag, walking on the right side of the road, away from the ego car. The pedestrian may step into the vehicle's path unexpectedly, so you should slow down and watch for crossing pedestrians."}
{"id": "train_03583", "split": "train", "clip_key": "titan_clip_714_000552_movie", "source": {"subset": "titan", "scenario": "clip_714", "frame": "000552"}, "frames": ["titan_clip_714_000552_movie_t-3.jpg", "titan_clip_714_000552_movie_t-2.jpg", "titan_clip_714_000552_movie_t-1.jpg", "titan_clip_714_000552_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban neighborhood street with a single narrow carriageway and green roadside railings runs straight; the pavement is smooth and traffic is light with no vehicles immediately ahead. On the left ahead, a pedestrian carrying a black bag on his back walks away near the curb close to the travel lane. Near the left foreground, another person stands by the curb facing the road but remains outside the lane. On the right, two pedestrians move and pause behind the railing, proceeding in the same direction and staying separated from traffic. A small parked car and some items along the left edge slightly reduce lateral space.", "hazard_reasoning": "There is a pedestrian carrying a black bag on his back, wearing a blue t-shirt and green pants, walking on the left side of the road, away from the ego car. The pedestrian could unexpectedly step into the roadway, so the driver should be aware of their presence."}
{"id": "train_03584", "split": "train", "clip_key": "titan_clip_103_000516_movie", "source": {"subset": "titan", "scenario": "clip_103", "frame": "000516"}, "frames": ["titan_clip_103_000516_movie_t-3.jpg", "titan_clip_103_000516_movie_t-2.jpg", "titan_clip_103_000516_movie_t-1.jpg", "titan_clip_103_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with brick paving has no median and functions as a single lane with light, slow traffic, while many pedestrians walk near the storefronts. A white van ahead in the ego lane moves slowly down the center, pacing the ego vehicle. A teal taxi is stopped at the left curb and juts slightly into the lane, reducing clearance. On the left side of the road, a pedestrian wearing a white shirt and black pants walks away from the ego car along the lane edge and may step into the path.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants walking on the left side of the road away from the ego car. The pedestrian may step into the roadway unexpectedly, so the driver should slow down to maintain safety."}
{"id": "train_03585", "split": "train", "clip_key": "2020-0228-102841_001157_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "001157"}, "frames": ["2020-0228-102841_001157_movie_t-3.jpg", "2020-0228-102841_001157_movie_t-2.jpg", "2020-0228-102841_001157_movie_t-1.jpg", "2020-0228-102841_001157_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban backstreet with a very narrow two-way road lacks a center line; the dry pavement is slightly worn and traffic is light. A pedestrian ahead, wearing brown trousers, a black top, and black shoes, walks away in the middle of the ego lane, occupying the path and constraining the ego vehicle's pace. Farther ahead, a small dark van is stopped in the lane near the end of the alley, further limiting passage in the same direction. An unsignalized side street opens on the right, while bollards along the left curb and close storefronts make the corridor tight.", "hazard_reasoning": "There is a pedestrian wearing a pair of brown trousers, a black top, black shoes, walking in the ego lane. The pedestrian is walking directly in the vehicle's lane, requiring a careful manoeuvre to avoid collision under this situation."}
{"id": "train_03586", "split": "train", "clip_key": "2020-0220-151845_048269_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "048269"}, "frames": ["2020-0220-151845_048269_movie_t-3.jpg", "2020-0220-151845_048269_movie_t-2.jpg", "2020-0220-151845_048269_movie_t-1.jpg", "2020-0220-151845_048269_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane road under an elevated expressway has smooth pavement with a central crack and heavy, slow traffic. A small construction area with barricades lines the left shoulder, and blue overhead direction signs span the road. A tarp-covered flatbed truck directly ahead in the ego lane creeps forward and sets the pace. A silver scooter cuts from the left lane into the ego lane near the truck because of congestion ahead, briefly entering the ego path. Cars queuing in the neighboring lanes move slowly alongside, reducing space for lane changes.", "hazard_reasoning": "There's a silver scooter cutting into the ego lane from the left lane, because of traffic congestion ahead. The scooter is merging unexpectedly into your lane due to congestion, so slowing down can help you avoid a collision and adjust to changing traffic flow."}
{"id": "train_03587", "split": "train", "clip_key": "2020-0228-102841_050781_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "050781"}, "frames": ["2020-0228-102841_050781_movie_t-3.jpg", "2020-0228-102841_050781_movie_t-2.jpg", "2020-0228-102841_050781_movie_t-1.jpg", "2020-0228-102841_050781_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane street with mid-rise buildings and dry pavement has no physical median, and traffic in the same direction is heavy and mostly stopped. A white van is stopped directly ahead in the ego lane because of traffic congestion, holding the ego vehicle. A large box truck is alongside on the right in the adjacent lane, halted with the queue and partly blocking the view forward. Ahead-right, a small pickup with a covered load creeps along in the neighboring lane, running parallel to the ego car and preventing an immediate move to the right. Parked or standing cars line the left curb in marked bays, narrowing the usable space.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid rear-ending the stationary vehicle."}
{"id": "train_03588", "split": "train", "clip_key": "titan_clip_609_000540_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_609_000540_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_609_000540_movie_t-3_augB1.jpg", "titan_clip_609_000540_movie_t-2_augB1.jpg", "titan_clip_609_000540_movie_t-1_augB1.jpg", "titan_clip_609_000540_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "A narrow urban one-lane street with textured paving leads into a small plaza; the surface looks good and vehicular flow is light but slowed by pedestrians and a stopped van. On the left edge ahead, a silver van is parked partly in the lane, narrowing the passage and constraining the ego car's path. In front of this van, a pedestrian carrying a handbag and a milk jug walks toward the ego vehicle along the left side because the parked vehicle blocks the sidewalk, and he may step into the ego lane. From the right, another pedestrian with a backpack steps off the sidewalk and crosses ahead toward the left, briefly occupying the vehicle's path. A blue right-turn-only sign and a no-parking sign are posted on the left near the corner.", "hazard_reasoning": "There is a pedestrian carrying a handbag and a milk jug, and walking on the left side of the road, towards the ego-car, because of the parked vehicle. The pedestrian may step into the lane unexpectedly due to limited sidewalk space, so the driver should yield to avoid a collision."}
{"id": "train_03589", "split": "train", "clip_key": "2020-0131-135401_004998_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "004998"}, "frames": ["2020-0131-135401_004998_movie_t-3.jpg", "2020-0131-135401_004998_movie_t-2.jpg", "2020-0131-135401_004998_movie_t-1.jpg", "2020-0131-135401_004998_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow two-way urban street with one lane each way and no physical median has smooth pavement and generally light traffic but is momentarily stalled. Directly ahead, a white box truck is stopped in the ego lane, blocking the path. To the right, an oncoming taxi in its lane waits beside the truck, leaving little space between vehicles. On the left sidewalk, several pedestrians walk along near the curb without entering the roadway. An overhead circular sign shows 40, indicating the posted speed limit.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The stopped truck blocks your path, so you should stop to avoid a rear-end collision."}
{"id": "train_03590", "split": "train", "clip_key": "2020-0127-132751_103301_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "103301"}, "frames": ["2020-0127-132751_103301_movie_t-3.jpg", "2020-0127-132751_103301_movie_t-2.jpg", "2020-0127-132751_103301_movie_t-1.jpg", "2020-0127-132751_103301_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban two-lane two-way road with a single solid yellow centerline has dry, intact pavement and light, steady traffic. A gray van drives ahead in the ego lane away from the camera, continuing straight and setting the pace. In the opposite lane to the right, a white box truck approaches and continues straight within its lane, creating no conflict with the ego path. A pedestrian on the right sidewalk walks along the curb, remaining clear of the roadway. No signals or obstacles affect travel.", "hazard_reasoning": "There is a gray van driving in the ego lane away from the ego car. The slight curve ahead restricts your view of the road beyond the van, so you should follow at a safe distance to avoid unexpected braking."}
{"id": "train_03591", "split": "train", "clip_key": "2020-0204-150838_004593_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_004593_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_004593_movie_t-3_augB1.jpg", "2020-0204-150838_004593_movie_t-2_augB1.jpg", "2020-0204-150838_004593_movie_t-1_augB1.jpg", "2020-0204-150838_004593_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with good pavement and only painted separation runs through a commercial district, and traffic is moderate to heavy with vehicles bunching ahead. A black van directly ahead in the ego lane slows because of congestion, constraining the ego car's pace. In the adjacent left lane, a black taxi also slows behind a white box truck, keeping close spacing and limiting any chance to pass on that side. To the right, oncoming cars and a scooter move steadily in their lanes, separated from the ego's direction by markings. An overhead blue directional sign displays arrows for left and straight movements.", "hazard_reasoning": "There is a black van slowing in front of the ego car in the ego lane, because of traffic congestion. Because the van ahead is decelerating in dense traffic, the driver must slow down to keep a safe following distance and prevent a rear-end collision."}
{"id": "train_03592", "split": "train", "clip_key": "2020-0129-105040_042129_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "042129"}, "frames": ["2020-0129-105040_042129_movie_t-3.jpg", "2020-0129-105040_042129_movie_t-2.jpg", "2020-0129-105040_042129_movie_t-1.jpg", "2020-0129-105040_042129_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway runs through a covered viaduct with three same-direction lanes, solid side barriers, smooth pavement, and a gentle right curve; traffic is light to moderate but thickens farther ahead. A black-and-white truck directly ahead in the ego lane slows as the flow compresses, consistent with congestion developing in the distance and constraining the ego car's pace. In the adjacent right lane a white van continues steadily without signaling or merging, creating no immediate conflict. Farther ahead several vehicles cluster across lanes and brake, forming a short queue that limits speed.", "hazard_reasoning": "There is a black and white truck slowing down ahead of the ego-car, because of traffic congestion ahead. The slowed truck indicates congestion that may require the driver to reduce speed to maintain a safe following distance."}
{"id": "train_03593", "split": "train", "clip_key": "2020-0203-114632_052728_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "052728"}, "frames": ["2020-0203-114632_052728_movie_t-3.jpg", "2020-0203-114632_052728_movie_t-2.jpg", "2020-0203-114632_052728_movie_t-1.jpg", "2020-0203-114632_052728_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction curves gently right toward a signalized intersection, the pavement is smooth, and traffic is light. No same-direction vehicle is immediately ahead, leaving the ego lane clear. On the right, a white car stands at the curb near the buildings, stationary and outside the travel lane. On the left, a white van is parked by a driveway at the sidewalk. Overhead blue guide signs and signal masts mark the junction ahead across the raised grassy median.", "hazard_reasoning": "No hazards detected; the road is clear and free of obstacles or road users, so the driver can maintain speed safely."}
{"id": "train_03594", "split": "train", "clip_key": "titan_clip_806_000510_movie", "source": {"subset": "titan", "scenario": "clip_806", "frame": "000510"}, "frames": ["titan_clip_806_000510_movie_t-3.jpg", "titan_clip_806_000510_movie_t-2.jpg", "titan_clip_806_000510_movie_t-1.jpg", "titan_clip_806_000510_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban two-way street with one narrow lane per direction runs between tall buildings; the pavement is dry and smooth, and traffic is light with occasional oncoming cars. A delivery truck is parked ahead against the left curb, partly encroaching into the ego lane and narrowing the path. A pedestrian ahead on the left walks in the roadway just behind the truck and along its rear, close to the ego vehicle's path. An oncoming dark car travels past on the right in the opposite lane, reducing the available gap for the ego vehicle to pass the parked truck.", "hazard_reasoning": "There is a brown truck that is parked on the left side of the road. This parked vehicle blocks sight lines for oncoming traffic or pedestrians, so you should carefully manoeuvre around it to maintain visibility and avoid collisions."}
{"id": "train_03595", "split": "train", "clip_key": "2020-0131-135401_004854_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "004854"}, "frames": ["2020-0131-135401_004854_movie_t-3.jpg", "2020-0131-135401_004854_movie_t-2.jpg", "2020-0131-135401_004854_movie_t-1.jpg", "2020-0131-135401_004854_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with one narrow lane each direction, no median, and smooth pavement is seen in bright sun; traffic is light and no oncoming vehicles are visible. A white box truck directly ahead in the ego lane is stopped, blocking the path and constraining the ego car. Several pedestrians walk along the left sidewalk near and ahead, continuing past building entrances and staying off the roadway. An overhead sign displays a 40 speed limit. Strong glare from the right and a raised curb along the left edge of the lane create a tight corridor beside the stopped truck.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane. The stopped truck blocks the travel path and requires the driver to stop to avoid a rear-end collision."}
{"id": "train_03596", "split": "train", "clip_key": "titan_clip_64_000078_movie", "source": {"subset": "titan", "scenario": "clip_64", "frame": "000078"}, "frames": ["titan_clip_64_000078_movie_t-3.jpg", "titan_clip_64_000078_movie_t-2.jpg", "titan_clip_64_000078_movie_t-1.jpg", "titan_clip_64_000078_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrians", "environment_perception": "An urban narrow two-way street with no center line runs between buildings, the pavement is smooth, and traffic is very light with no oncoming vehicles. Two pedestrians on the right edge walk toward the camera along the curb beside a guardrail, close to the travel path. A man farther ahead on the left sidewalk walks away from the ego vehicle and stays clear of the lane. A box truck stands ahead near the left side of the roadway, narrowing the passage. Bicycles line the curbs and storefronts, but no signals or signs are prominent.", "hazard_reasoning": "There are two pedestrians walking on the right side of the road, toward the ego car. These pedestrians could step into the vehicle's path unexpectedly, so the driver should manoeuvre carefully around them to maintain a safe distance."}
{"id": "train_03597", "split": "train", "clip_key": "titan_clip_844_000186_movie", "source": {"subset": "titan", "scenario": "clip_844", "frame": "000186"}, "frames": ["titan_clip_844_000186_movie_t-3.jpg", "titan_clip_844_000186_movie_t-2.jpg", "titan_clip_844_000186_movie_t-1.jpg", "titan_clip_844_000186_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban residential street with left-side travel narrows to a single two-way lane and rises gently uphill; the asphalt is patched but clear, and traffic is light with no vehicles ahead or oncoming. Ahead, a pedestrian in a white shirt walking a dog crosses from right to left directly in front of the ego vehicle, moving steadily across the ego lane and occupying its path. No traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking a dog, crossing the street from right to left, on front of the ego-car. The pedestrian is entering the lane ahead, so the driver should slow down to ensure safe passage and avoid a collision."}
{"id": "train_03598", "split": "train", "clip_key": "titan_clip_1124_000066_movie", "source": {"subset": "titan", "scenario": "clip_1124", "frame": "000066"}, "frames": ["titan_clip_1124_000066_movie_t-3.jpg", "titan_clip_1124_000066_movie_t-2.jpg", "titan_clip_1124_000066_movie_t-1.jpg", "titan_clip_1124_000066_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped truck ahead", "environment_perception": "An urban residential two-way street with no centerline, a red bicycle lane along the right edge, and slightly worn pavement shows light traffic and steady flow. Ahead on the right, a red truck is stopped at the curb, narrowing the available space for the ego vehicle's path. Closer on the right, a white car remains parked under a building entrance and does not intrude into the lane. Bicycles are lined along the left guardrail, tightening the shoulder without movement. A large 30 marking on the roadway and bike lane arrows are clearly visible.", "hazard_reasoning": "There is a red truck stopped on the right side of the road. The stopped truck could obstruct traffic flow and may require you to adjust speed or position."}
{"id": "train_03599", "split": "train", "clip_key": "titan_clip_421_000084_movie", "source": {"subset": "titan", "scenario": "clip_421", "frame": "000084"}, "frames": ["titan_clip_421_000084_movie_t-3.jpg", "titan_clip_421_000084_movie_t-2.jpg", "titan_clip_421_000084_movie_t-1.jpg", "titan_clip_421_000084_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down and watch for crossing pedestrian", "environment_perception": "A narrow urban side street without lane markings runs between tall buildings, the dry pavement in good condition and traffic light. A large delivery truck is stopped on the right with its rear open, and a worker at the tailgate handles cargo, partially narrowing the travel space. Far ahead another box truck proceeds away along the center of the roadway, setting the pace for the ego vehicle. On the left side, a woman in a yellow shirt and blue pants walks away from the ego vehicle along the curb and may step toward the lane near the parked trucks. No traffic signals or posted speeds are visible.", "hazard_reasoning": "A woman wearing a yellow shirt and blue pants and walking on the left side of the road, away from the ego car. Slow down because she may step into your lane from the blind spot created by the truck."}
{"id": "train_03600", "split": "train", "clip_key": "2020-0212-102546_048590_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "048590"}, "frames": ["2020-0212-102546_048590_movie_t-3.jpg", "2020-0212-102546_048590_movie_t-2.jpg", "2020-0212-102546_048590_movie_t-1.jpg", "2020-0212-102546_048590_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction runs between mid-rise buildings, the pavement dry and smooth, and traffic light. A white van ahead in the ego lane drives away from the ego car at a steady pace, maintaining its line. Farther ahead in the same lane, a yellow bus moves steadily near the next junction, pacing the flow. A hedge median lines the right, separating opposite-direction traffic, and side streets open on the left.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. The driver should slow down because the white van ahead may brake suddenly."}
{"id": "train_03601", "split": "train", "clip_key": "2020-0131-135401_044453_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "044453"}, "frames": ["2020-0131-135401_044453_movie_t-3.jpg", "2020-0131-135401_044453_movie_t-2.jpg", "2020-0131-135401_044453_movie_t-1.jpg", "2020-0131-135401_044453_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane each direction runs between low-rise buildings, with no median and smooth pavement; traffic is light. A white van ahead in the ego left lane proceeds straight through the zebra crossing and continues along the street, setting the ego vehicle's pace. At the left curb by the crosswalk, a cyclist with a bicycle waits to cross and could enter the ego lane after the van passes. On the right corner, a pedestrian stands near the curb watching the road and remains a potential crosser. No oncoming vehicles are close, and the marked crosswalk is clearly visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03602", "split": "train", "clip_key": "2020-0220-102630_122034_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "122034"}, "frames": ["2020-0220-102630_122034_movie_t-3.jpg", "2020-0220-102630_122034_movie_t-2.jpg", "2020-0220-102630_122034_movie_t-1.jpg", "2020-0220-102630_122034_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban two-way street with one lane per direction is divided by a solid yellow centerline; the pavement is dry and the overall flow is heavy and slow. A black hatchback directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. Oncoming cars stream past in the right lane at low speed, occupying the opposing lane next to the ego vehicle. A pedestrian stands on the left sidewalk near the curb beside the ego lane, waiting along the roadside without stepping into the street.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, because of traffic congestion ahead. The unexpected stop increases the risk of a rear-end collision, so the driver must stop promptly."}
{"id": "train_03603", "split": "train", "clip_key": "2020-0129-144857_001527_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "001527"}, "frames": ["2020-0129-144857_001527_movie_t-3.jpg", "2020-0129-144857_001527_movie_t-2.jpg", "2020-0129-144857_001527_movie_t-1.jpg", "2020-0129-144857_001527_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane in each direction runs straight between buildings, with green railings along both sidewalks and a smooth dry surface; traffic is light. A black SUV is stopped ahead in the ego lane directly in front of the ego vehicle, constraining its pace. Farther ahead, a white passenger car travels toward the camera in the oncoming lane, keeping to its lane and occupying the opposite side, which limits space to pass the stopped vehicle. On the right sidewalk a pedestrian near a storefront walks along the curb, remaining on the sidewalk but close to the roadway. No traffic signals or speed signs are clearly visible, and no other hazards appear.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, in front of the ego car. The stationary vehicle poses a rear-end collision risk if the driver does not brake in time, so the driver should stop under this situation."}
{"id": "train_03604", "split": "train", "clip_key": "2020-0228-150133_061659_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "061659"}, "frames": ["2020-0228-150133_061659_movie_t-3.jpg", "2020-0228-150133_061659_movie_t-2.jpg", "2020-0228-150133_061659_movie_t-1.jpg", "2020-0228-150133_061659_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two-way traffic and no physical median runs under a pedestrian overpass; the pavement is dry and in good condition. Traffic in the ego's direction is heavy and largely stopped, while oncoming flow on the right moves steadily. A black sedan is stopped directly ahead in the ego lane because of congestion, blocking the ego vehicle's path. To the left, a white minivan slightly ahead waits in the adjacent same-direction lane within the queue, limiting room to merge. On the far right side of the roadway, an oncoming box truck travels past in its lane and continues through. A distant traffic signal is visible down the road.", "hazard_reasoning": "There is a black sedan stopped in the ego lane because of traffic congestion ahead on the road. The sedan's stop indicates slowing traffic ahead, so you should stop to maintain a safe distance and avoid a collision."}
{"id": "train_03605", "split": "train", "clip_key": "titan_clip_292_000192_movie", "source": {"subset": "titan", "scenario": "clip_292", "frame": "000192"}, "frames": ["titan_clip_292_000192_movie_t-3.jpg", "titan_clip_292_000192_movie_t-2.jpg", "titan_clip_292_000192_movie_t-1.jpg", "titan_clip_292_000192_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "A narrow urban two-way street with no centerline and smooth asphalt runs between shopfronts under clear skies, and traffic is light with no same-direction or oncoming vehicles nearby. Orange cones line the left curb while a row of parked bicycles occupies the right curb, narrowing the lane. Ahead on the left edge of the roadway, a woman wearing a black skirt walks toward the ego vehicle because the parked bicycles leave little sidewalk space, and she occupies part of the ego lane, constraining the vehicle's approach.", "hazard_reasoning": "A woman wearing a black skirt and walking on the left side of the road, towards the ego car, because of parked bicycles. The driver should be aware of the pedestrian to avoid a possible collision."}
{"id": "train_03606", "split": "train", "clip_key": "titan_clip_781_000450_movie", "source": {"subset": "titan", "scenario": "clip_781", "frame": "000450"}, "frames": ["titan_clip_781_000450_movie_t-3.jpg", "titan_clip_781_000450_movie_t-2.jpg", "titan_clip_781_000450_movie_t-1.jpg", "titan_clip_781_000450_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A dense urban shopping street has a narrow single-lane roadway without a centerline; the pavement looks sound and there is no visible vehicle traffic while pedestrian flow is busy. Temporary barricades line the left edge and freestanding shop signs on the right further narrow the usable lane. A pedestrian in white ahead in the lane center walks away from the camera, occupying the ego vehicle's path and constraining its pace. On the right side, a pedestrian wearing a brown dress walks toward the ego car near the curb and may edge into the lane. Beside her, another pedestrian in dark clothing also approaches along the right edge, adding to the limited clearance.", "hazard_reasoning": "There is a pedestrian wearing a brown dress and walking on the right side of the road, toward the ego car. This pedestrian is moving toward the vehicle's path in a narrow street, so the driver should manoeuvre carefully to avoid collision."}
{"id": "train_03607", "split": "train", "clip_key": "2020-0204-103442_035912_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "035912"}, "frames": ["2020-0204-103442_035912_movie_t-3.jpg", "2020-0204-103442_035912_movie_t-2.jpg", "2020-0204-103442_035912_movie_t-1.jpg", "2020-0204-103442_035912_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated structure, with guardrails and columns on the left and dashed dividers; the surface is dry and traffic moves slowly in heavy congestion. Directly ahead in the ego lane, a white box truck slows and stop-and-goes because of the queue, constraining the ego car's pace. In the adjacent right lane, a silver hatchback alongside edges forward at low speed in the same direction. Farther ahead in the right lane, a dark car also creeps with the traffic. Blue directional signs hang overhead, and left-side chevron boards mark a gentle left bend.", "hazard_reasoning": "A white truck is slowing in front of the ego car in the ego lane, because of traffic congestion. Drivers should slow down to maintain a safe following distance and avoid rear-end collisions."}
{"id": "train_03608", "split": "train", "clip_key": "2020-0220-151845_032356_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "032356"}, "frames": ["2020-0220-151845_032356_movie_t-3.jpg", "2020-0220-151845_032356_movie_t-2.jpg", "2020-0220-151845_032356_movie_t-1.jpg", "2020-0220-151845_032356_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban arterial runs under an elevated expressway with two same-direction lanes and smooth pavement, and traffic is heavy and mostly stationary. Directly ahead in the ego lane, a loaded red flatbed truck has stopped because congestion blocks the way, holding the ego vehicle's progress. In the right adjacent lane, a silver van and several small trucks are also stopped or creeping, so the lane beside the ego vehicle is effectively blocked. On the far left beside a curb-separated path, a cyclist rides forward parallel to traffic without interacting with the lane.", "hazard_reasoning": "There is a loaded red truck that has stopped in the ego lane, because of the traffic congestion ahead. The stopped truck blocks the lane and requires the driver to stop to avoid a collision."}
{"id": "train_03609", "split": "train", "clip_key": "titan_clip_703_000300_movie", "source": {"subset": "titan", "scenario": "clip_703", "frame": "000300"}, "frames": ["titan_clip_703_000300_movie_t-3.jpg", "titan_clip_703_000300_movie_t-2.jpg", "titan_clip_703_000300_movie_t-1.jpg", "titan_clip_703_000300_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the construction zone", "environment_perception": "A narrow urban street with a single lane runs between shops on the right and a building wrapped for renovation on the left; the pavement is smooth and traffic is very light with no moving vehicles. Orange cones and sheeting create a left-side work zone that narrows the lane. On the left near the cones, a pedestrian wearing a helmet and blue shirt walks toward the ego vehicle because of the construction, close to the roadway and potentially edging into the lane. Farther ahead near the centerline, another pedestrian continues away along the street. A small car is parked at the right curb ahead, further tightening the passage.", "hazard_reasoning": "There is a pedestrian wearing a helmet and blue shirt, walking on the left side of the road, towards the ego car, because of construction work on the left. You should manoeuvre carefully around the construction zone to avoid colliding with the pedestrian moving towards your path."}
{"id": "train_03610", "split": "train", "clip_key": "2020-0213-143552_006321_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "006321"}, "frames": ["2020-0213-143552_006321_movie_t-3.jpg", "2020-0213-143552_006321_movie_t-2.jpg", "2020-0213-143552_006321_movie_t-1.jpg", "2020-0213-143552_006321_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped truck ahead", "environment_perception": "An urban two-way arterial with two lanes in each direction and no physical median stretches ahead; the pavement is dry and traffic is light. A gray truck is stopped ahead in the ego lane near the left curb, occupying the lane and limiting the ego vehicle's progress. Oncoming vehicles, including a white truck and a silver car, move steadily in the right-side lanes without conflicting with the ego path. A pedestrian walks along the left sidewalk by storefronts, remaining off the road.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, in the ego lane. Driver should be aware of the stopped truck to avoid collision."}
{"id": "train_03611", "split": "train", "clip_key": "titan_clip_959_000096_movie", "source": {"subset": "titan", "scenario": "clip_959", "frame": "000096"}, "frames": ["titan_clip_959_000096_movie_t-3.jpg", "titan_clip_959_000096_movie_t-2.jpg", "titan_clip_959_000096_movie_t-1.jpg", "titan_clip_959_000096_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one lane each direction and no median approaches a signalized intersection; the asphalt looks worn and traffic is light. A white van ahead in the ego lane proceeds straight, loosely setting the pace. Farther ahead by the left curb, a dark truck is stopped near a construction site fence, narrowing the usable lane and partly blocking sightlines. On the near right corner of the intersection, a person wearing black pants pushes a trolley along the sidewalk and edges toward the crosswalk, with brief potential to enter the ego lane. A blue wheeled bin stands in the left side of the ego lane near the crosswalk as a small stationary obstacle.", "hazard_reasoning": "There is a person wearing black pants and pushing a trolley, on the left side of the intersection. This pedestrian could step into the vehicle's path unexpectedly, so the driver should carefully manoeuvre around them to maintain safety."}
{"id": "train_03612", "split": "train", "clip_key": "2020-0131-135401_055615_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "055615"}, "frames": ["2020-0131-135401_055615_movie_t-3.jpg", "2020-0131-135401_055615_movie_t-2.jpg", "2020-0131-135401_055615_movie_t-1.jpg", "2020-0131-135401_055615_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth asphalt carries heavy stop-and-go traffic, and plastic bollards line the right edge while a pedestrian overpass spans the road. A silver car is stopped in front of the ego car in the ego lane because there is traffic congestion ahead, holding the ego vehicle at a standstill. To the left, a queue of vans and cars in the adjacent same-direction lane is also stopped or creeping, matching the jam. Ahead-right, a white minivan in the next lane slows within the queue and remains alongside the ego path. Near the front-right corner, another silver sedan inches forward in the rightmost lane by the bollards. Overhead blue direction signs provide lane guidance with right-turn arrows for the right lanes.", "hazard_reasoning": "A silver car is stopped in front of the ego car in the ego lane because there is traffic congestion ahead. The driver should stop to avoid a potential rear-end collision due to the sudden traffic buildup."}
{"id": "train_03613", "split": "train", "clip_key": "titan_clip_1076_000570_movie", "source": {"subset": "titan", "scenario": "clip_1076", "frame": "000570"}, "frames": ["titan_clip_1076_000570_movie_t-3.jpg", "titan_clip_1076_000570_movie_t-2.jpg", "titan_clip_1076_000570_movie_t-1.jpg", "titan_clip_1076_000570_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the traffic cone", "environment_perception": "A narrow urban street slopes gently uphill with a single forward lane and no median, bordered closely by buildings; pavement looks clean and traffic is light with no vehicles. A small group of pedestrians is ahead in the lane, walking away in the ego path and effectively setting the pace. At the right edge near the camera, a pedestrian walks along the curb toward the front of the vehicle and is close to the travel lane, so the path may be encroached. Orange traffic cones line the left side of the road, including an orange traffic cone beside a cordoned work area and some bagged debris.", "hazard_reasoning": "There is an orange traffic cone on the left side of the road. The cone narrows the drivable space and signals ongoing construction, so the driver should adjust their path to avoid hitting it."}
{"id": "train_03614", "split": "train", "clip_key": "2020-0129-105040_031623_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "031623"}, "frames": ["2020-0129-105040_031623_movie_t-3.jpg", "2020-0129-105040_031623_movie_t-2.jpg", "2020-0129-105040_031623_movie_t-1.jpg", "2020-0129-105040_031623_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road runs beneath an elevated expressway, with one lane each direction and no median; the asphalt is dry and lightly worn, and overall traffic is light. Ahead at the zebra crossing, a pedestrian wearing red pants crosses from right to left across the ego lane, directly in the vehicle's path and constraining the approach. Just beyond the crosswalk on the left, a small flatbed truck waits near the junction at the curb, leaving the through lane mostly clear. At the near right curb, a white van is stopped beside the crosswalk entrance, partially blocking the sightline to the curb area.", "hazard_reasoning": "There is a pedestrian wearing red pants, crossing the street at a pedestrian crossing, from the right side to the left side. You must stop to avoid hitting the pedestrian who is entering your path under a red light."}
{"id": "train_03615", "split": "train", "clip_key": "2020-0213-143552_065812_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "065812"}, "frames": ["2020-0213-143552_065812_movie_t-3.jpg", "2020-0213-143552_065812_movie_t-2.jpg", "2020-0213-143552_065812_movie_t-1.jpg", "2020-0213-143552_065812_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided roadway with two lanes in the ego direction runs past mid-rise buildings, bordered on the right by a shrub median; the dry pavement is smooth and traffic is moderate, then easing as vehicles approach an intersection. A white box truck directly ahead in the ego lane slows for a red traffic light and sets the pace. A light-colored sedan ahead to the left continues in the curb lane at a similar speed, potentially passing the truck but remaining in its lane. A blue hatchback is stopped along the left curb near the ego vehicle, slightly intruding toward the lane and narrowing the margin. Vehicles on the far side of the median move in the opposite direction and remain separated.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car, because of a red traffic light. The truck's deceleration for the red signal requires the driver to slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_03616", "split": "train", "clip_key": "titan_clip_250_000468_movie", "source": {"subset": "titan", "scenario": "clip_250", "frame": "000468"}, "frames": ["titan_clip_250_000468_movie_t-3.jpg", "titan_clip_250_000468_movie_t-2.jpg", "titan_clip_250_000468_movie_t-1.jpg", "titan_clip_250_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban back street with a single undivided lane shows smooth asphalt and strong sun glare ahead, with light traffic and scooters parked along the right curb narrowing the way. A pedestrian in a black T-shirt and pants with white shoes walks ahead along the left edge where there is no sidewalk, close to the ego lane and reducing available space. Two other pedestrians just ahead on the left push a stroller in the same direction, remaining near the lane boundary and further constricting the path. A cyclist approaches from ahead near the center-right, moving toward the camera and about to pass in the limited gap. A roadside sign on the left indicates a parking or stopping restriction.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, black pants, and white shoes, walking on the left side of the road towards the ego car because there is no sidewalk. The driver should manoeuvre carefully around the pedestrian to avoid a collision."}
{"id": "train_03617", "split": "train", "clip_key": "2020-0212-102546_000736_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "000736"}, "frames": ["2020-0212-102546_000736_movie_t-3.jpg", "2020-0212-102546_000736_movie_t-2.jpg", "2020-0212-102546_000736_movie_t-1.jpg", "2020-0212-102546_000736_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead.", "environment_perception": "An urban multi-lane intersection with smooth asphalt and no median comes into view, and traffic is moderate. The ego vehicle approaches in the left lane. A black sedan in front of the ego car is turning left through the junction, leading the same maneuver and setting the pace. A white van ahead to the right proceeds straight across to the far side, passing near where the ego vehicle will finish its turn but not merging. A cyclist rides across the central crosswalk from right to left in front of the ego's intended path, potentially entering the lane during the turn. Overhead traffic signals control the intersection.", "hazard_reasoning": "A black sedan in front of the ego car is turning left. The sedan's left turn requires the driver to follow the vehicle ahead at a safe distance to anticipate its reduced speed and avoid collision."}
{"id": "train_03618", "split": "train", "clip_key": "2020-0213-143552_077516_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "077516"}, "frames": ["2020-0213-143552_077516_movie_t-3.jpg", "2020-0213-143552_077516_movie_t-2.jpg", "2020-0213-143552_077516_movie_t-1.jpg", "2020-0213-143552_077516_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes runs between sound barriers, the pavement dry and smooth, and traffic is light. A black truck ahead in the ego lane drives away at a steady pace, lightly setting the ego car's speed. To the right, a white minivan travels alongside in a green-painted merge lane bounded by flexible posts and may enter the ego lane. Farther ahead in the right lane, a small truck continues away without affecting the ego vehicle. A white rectangular roadside sign with Japanese text stands on the left, and a signal head is mounted high on the left.", "hazard_reasoning": "There is a black truck driving in the ego lane, away from the ego car. The cones on the right mark a potential work area, so following the vehicle ahead helps maintain a safe path and avoid the restricted zone."}
{"id": "train_03619", "split": "train", "clip_key": "2020-0205-103411_008565_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-103411_008565_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-103411_008565_movie_t-3_augB1.jpg", "2020-0205-103411_008565_movie_t-2_augB1.jpg", "2020-0205-103411_008565_movie_t-1_augB1.jpg", "2020-0205-103411_008565_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the construction sign", "environment_perception": "An urban two-way road curves left between tall buildings; the pavement is smooth, the oncoming lane is red-paved and separated by a white hatched buffer, and traffic is light to moderate. On the left edge close to the ego lane, a pedestrian walks out from beside a parked SUV and continues along the lane line near the ego path. Ahead in the ego lane, a small flatbed truck slows at a roadside work area, constraining the pace, and a red arrow construction sign on the left directs vehicles past it. Oncoming flow includes a white mini-truck approaching in the red lane and another truck parked near the right curb, while additional parked vehicles on the left narrow the usable lane.", "hazard_reasoning": "There is a red arrow construction sign on the left side of the road. The sign indicates upcoming road works that may affect lane usage, so the driver should be cautious."}
{"id": "train_03620", "split": "train", "clip_key": "2020-0131-103016_021277_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "021277"}, "frames": ["2020-0131-103016_021277_movie_t-3.jpg", "2020-0131-103016_021277_movie_t-2.jpg", "2020-0131-103016_021277_movie_t-1.jpg", "2020-0131-103016_021277_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane signalized intersection lies ahead with smooth pavement and a painted channelizing island, and traffic is moderate with steady cross flow. Several cars move right-to-left across the junction while the near-side lanes remain stopped at the line. A white box truck sits just ahead to the left in a neighboring lane, stationary at the stop line. A dark minivan is alongside on the right, slightly ahead in its lane, also stopped. Pedestrians wait on the left sidewalk near the corner without entering the crosswalk. Overhead traffic signals and roadside signs are visible above the far side.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03621", "split": "train", "clip_key": "2020-0207-101955_088035_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_088035_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_088035_movie_t-3_augB1.jpg", "2020-0207-101955_088035_movie_t-2_augB1.jpg", "2020-0207-101955_088035_movie_t-1_augB1.jpg", "2020-0207-101955_088035_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of truck changing lanes", "environment_perception": "An urban multilane road runs under an elevated expressway, with three straight-through lanes and smooth pavement; traffic is moderate and moving slowly toward a signalized junction. A blue flatbed truck directly ahead in the ego lane moves left into the adjacent lane, creating space in front of the ego vehicle. A tall white box truck slightly ahead to the right continues straight at low speed and constrains the forward pace while obscuring part of the view ahead. On the far left, a long flatbed carrying construction machinery rolls forward slowly near the ego's side, remaining parallel.", "hazard_reasoning": "There is a blue truck changing lanes from the ego lane to the left lane. This maneuver may bring the truck into the driver's path, so maintain awareness to avoid a potential collision."}
{"id": "train_03622", "split": "train", "clip_key": "2020-0131-135401_003262_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003262"}, "frames": ["2020-0131-135401_003262_movie_t-3.jpg", "2020-0131-135401_003262_movie_t-2.jpg", "2020-0131-135401_003262_movie_t-1.jpg", "2020-0131-135401_003262_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In an urban residential area, the car proceeds along a narrow two-lane road with a yellow centerline, intact pavement, and light, steady traffic. A white box truck ahead in the ego lane drives away from the ego car, maintaining the lead and gently pulling ahead. On the right side just ahead, a cyclist rides in the same direction beside the fence, keeping to the edge but nearing the travel lane where the road narrows. A pedestrian stands by a utility pole on the right sidewalk, stationary and clear of the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The truck obstructs the driver's view of the road ahead, so maintaining a safe following distance is advised."}
{"id": "train_03623", "split": "train", "clip_key": "titan_clip_154_000840_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_154_000840_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_154_000840_movie_t-3_augB1.jpg", "titan_clip_154_000840_movie_t-2_augB1.jpg", "titan_clip_154_000840_movie_t-1_augB1.jpg", "titan_clip_154_000840_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "A narrow urban alley with a single shared lane and no median is lined by shops and construction walls; the pavement is smooth and there is no vehicular traffic. A pedestrian carrying a backpack stands directly ahead in the ego vehicle's path, facing away and temporarily blocking the lane. Farther ahead in the same lane, another pedestrian walks away along the center, limiting the space available if the ego moves forward. Stacked boxes and wine bottles outside the right storefront protrude slightly toward the roadway, adding a minor roadside obstacle. No traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian carrying a backpack, and standing in front of the ego car. The pedestrian is positioned directly ahead, so the driver should stop to avoid a collision."}
{"id": "train_03624", "split": "train", "clip_key": "2020-0214-102601_046510_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "046510"}, "frames": ["2020-0214-102601_046510_movie_t-3.jpg", "2020-0214-102601_046510_movie_t-2.jpg", "2020-0214-102601_046510_movie_t-1.jpg", "2020-0214-102601_046510_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with three lanes in the ego direction separated from oncoming lanes by a central median; the asphalt appears dry and smooth and traffic is moderate and steady. A small white truck travels ahead in the ego lane at similar speed, effectively setting the pace. A white van is alongside in the left adjacent lane very close to the camera, proceeding straight and remaining parallel without merging. In a narrow side lane beyond the guardrail to the right, several cars move in the same direction a little quicker but remain segregated from the ego lane. Blue directional signs hang from the structure ahead, and no unusual obstacles or work zones are visible.", "hazard_reasoning": "There is no immediate hazard detected. The driving environment is clear, and the driver can continue normal driving safely."}
{"id": "train_03625", "split": "train", "clip_key": "2020-0221-115122_022183_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "022183"}, "frames": ["2020-0221-115122_022183_movie_t-3.jpg", "2020-0221-115122_022183_movie_t-2.jpg", "2020-0221-115122_022183_movie_t-1.jpg", "2020-0221-115122_022183_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and maintain a safe distance.", "environment_perception": "An urban multilane road runs beneath an elevated expressway, with smooth pavement and heavy stop-and-go flow in the same direction. Traffic remains queued throughout the clip. A white hatchback directly ahead in the ego lane is stopped because congestion ahead blocks the lane, holding the ego vehicle. In the adjacent right lane, a light blue hatchback alongside is also stopped in the queue and inches forward in parallel with little space to merge. Farther ahead-right, a white sedan followed by a box truck lines up in the same jam and creeps forward, contributing to the blockage. Overhead blue direction signs and right-turn arrows marking the rightmost lane are visible.", "hazard_reasoning": "There is a white minivan stopped in the ego lane because of traffic congestion ahead. The minivan's sudden stop indicates dense traffic, so the driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_03626", "split": "train", "clip_key": "2020-0204-103442_012009_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "012009"}, "frames": ["2020-0204-103442_012009_movie_t-3.jpg", "2020-0204-103442_012009_movie_t-2.jpg", "2020-0204-103442_012009_movie_t-1.jpg", "2020-0204-103442_012009_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to the merging vehicle", "environment_perception": "An urban divided boulevard with multiple same-direction lanes and a planted median has smooth pavement and moderate, steady traffic. Ahead in the ego lane, a black mid-SUV straddles the lane line as it moves in from the lane to its left, evidently changing over to get around a slower vehicle and briefly constraining our pace. To the right, a silver kei van travels parallel slightly ahead in the adjacent lane, keeping a steady course that prevents an easy rightward lane change. Along the left edge ahead, a motor scooter proceeds slowly near the curb in the leftmost lane, posing a minor possibility of edging toward our path.", "hazard_reasoning": "There is a black mid-SUV lane changing from the left lane to the ego lane because of another vehicle ahead on the road. Yield to the merging vehicle to maintain safe spacing."}
{"id": "train_03627", "split": "train", "clip_key": "titan_clip_622_000078_movie", "source": {"subset": "titan", "scenario": "clip_622", "frame": "000078"}, "frames": ["titan_clip_622_000078_movie_t-3.jpg", "titan_clip_622_000078_movie_t-2.jpg", "titan_clip_622_000078_movie_t-1.jpg", "titan_clip_622_000078_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial backstreet with stone paving forms a narrow two-way roadway without a marked center line, and traffic is light as the ego-vehicle rolls forward. Ahead on the right, a gray van is stopped at the curb, protruding into the lane and constraining the available width. On the left side of the road, a pedestrian wearing a cap pulls a suitcase and walks away from the ego-vehicle along the edge, staying close to the travel path. At the right curb near a storefront, a rider sits on a scooter and waits at the roadside, positioned where it may enter the lane. Bicycles and shop signs line the sidewalks but remain out of the roadway.", "hazard_reasoning": "There is a pedestrian wearing a cap, pulling a suitcase, and walking on the left side of the road, away from the ego-car. This pedestrian might step into the driving path unexpectedly, so the driver should carefully manoeuvre around them."}
{"id": "train_03628", "split": "train", "clip_key": "2020-0131-103016_017870_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "017870"}, "frames": ["2020-0131-103016_017870_movie_t-3.jpg", "2020-0131-103016_017870_movie_t-2.jpg", "2020-0131-103016_017870_movie_t-1.jpg", "2020-0131-103016_017870_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes and smooth pavement runs through a dense city block, with traffic queued and stationary at a signalized intersection. A white hatchback is directly ahead in the ego lane, stopped for the red light and holding the ego vehicle in place. In the right lane a silver sedan idles slightly ahead, waiting to proceed straight when the signal changes. In the left lane a white van is also stopped a short distance ahead, maintaining the queue. Overhead lights facing the approach display red, and sidewalks with railings line the left side without notable obstacles.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of the red traffic lights. The driver should stop to avoid colliding with the halted vehicle at the red light."}
{"id": "train_03629", "split": "train", "clip_key": "2020-0127-132751_087319_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "087319"}, "frames": ["2020-0127-132751_087319_movie_t-3.jpg", "2020-0127-132751_087319_movie_t-2.jpg", "2020-0127-132751_087319_movie_t-1.jpg", "2020-0127-132751_087319_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban bidirectional road with a single lane each way curves gently right, bordered by buildings on the left and a guardrailed sidewalk on the right; the pavement looks dry and traffic is moderate. A blue mini-truck ahead in the ego lane travels steadily and sets the pace. Farther ahead, a green truck in the ego lane drives away from the ego car, maintaining separation. In the oncoming lane, a white van approaches and passes by without affecting the ego path. No notable signals or hazards are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03630", "split": "train", "clip_key": "2020-0220-102630_020783_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "020783"}, "frames": ["2020-0220-102630_020783_movie_t-3.jpg", "2020-0220-102630_020783_movie_t-2.jpg", "2020-0220-102630_020783_movie_t-1.jpg", "2020-0220-102630_020783_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with left-side driving shows two same-direction lanes and a curbside shoulder; the pavement is dry and traffic is heavy and slow. A white sedan ahead in the ego lane slows because of congestion forming up the road, directly constraining the ego car's pace. In the adjacent right lane, a small covered pickup travels slowly just ahead and roughly alongside, limiting any immediate lane change. Farther ahead a line of cars, including a tall box truck, crawls away across both lanes and sustains the bottleneck.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and prevent a rear-end collision in this congested traffic scenario."}
{"id": "train_03631", "split": "train", "clip_key": "titan_clip_13_000498_movie", "source": {"subset": "titan", "scenario": "clip_13", "frame": "000498"}, "frames": ["titan_clip_13_000498_movie_t-3.jpg", "titan_clip_13_000498_movie_t-2.jpg", "titan_clip_13_000498_movie_t-1.jpg", "titan_clip_13_000498_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban narrow one-lane street with paver bricks and no center divider runs between tall buildings; traffic is light and the lane is constricted by parked vehicles on the right. Two white box trucks are stopped on the right, the nearer angled outward and protruding into the roadway, narrowing the passage and partly obscuring the sidewalk. On the left by the storefronts, a pedestrian in a white shirt waits to cross to the right side and may enter the lane. Farther ahead, a few pedestrians walk away along the left edge without stepping into traffic.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, on the left side of the road, waiting to cross to the right side. Slow down because the pedestrian may step into your path unexpectedly."}
{"id": "train_03632", "split": "train", "clip_key": "2020-0226-140503_052228_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-140503_052228_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-140503_052228_movie_t-3_augB1.jpg", "2020-0226-140503_052228_movie_t-2_augB1.jpg", "2020-0226-140503_052228_movie_t-1_augB1.jpg", "2020-0226-140503_052228_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the motorcycle ahead", "environment_perception": "An urban multilane arterial passes between mid-rise buildings; the pavement is dry and smooth, and traffic flows at a moderate pace. A black motorcycle rides ahead in the ego lane at short distance, moving steadily and directly setting the ego car's pace. To the right, a black sedan in the adjacent lane advances slightly faster, remaining parallel without encroaching. Farther right, a gray car continues in the outer lane among other vehicles and stays ahead without affecting the ego. A blue curbside lane on the left is separated from the travel lane by a painted buffer.", "hazard_reasoning": "There is a black motorcycle driving in front of the ego car in the ego lane. The driver should be cautious because the motorcycle may brake suddenly or change position unexpectedly, requiring timely reaction."}
{"id": "train_03633", "split": "train", "clip_key": "2020-0203-114632_059669_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "059669"}, "frames": ["2020-0203-114632_059669_movie_t-3.jpg", "2020-0203-114632_059669_movie_t-2.jpg", "2020-0203-114632_059669_movie_t-1.jpg", "2020-0203-114632_059669_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way street with two lanes per direction and a low post-lined median stretches ahead, the fresh dark pavement marked by a wide zebra crossing; traffic is light. A traffic signal hangs over the crosswalk and a 50 km/h speed-limit sign stands on the left. Far ahead in the ego lane, a white box truck proceeds straight, modestly pacing the lane. Across the median to the right, an oncoming silver car advances along its curbside lane without affecting our path. Further right in the oncoming lanes, a motorcycle and another truck continue straight past roadside trees. On the left shoulder outside the travel lanes, a parked truck with a uniformed worker stands beside a storefront, posing no obstruction.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03634", "split": "train", "clip_key": "2020-0218-151547_016211_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "016211"}, "frames": ["2020-0218-151547_016211_movie_t-3.jpg", "2020-0218-151547_016211_movie_t-2.jpg", "2020-0218-151547_016211_movie_t-1.jpg", "2020-0218-151547_016211_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban scene shows the ego car on a three-lane same-direction arterial under elevated structures, with smooth pavement and heavy traffic halted at a red light. Ahead in the ego lane, a silver hatchback is stopped because the traffic light is red, holding the ego vehicle. In the lane to the left, a green box truck slightly ahead is stationary at the light and occupies the adjacent lane. In the right lane, a red hatchback a little ahead also waits at the light alongside the ego car.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid a collision with the stationary vehicle at the red light."}
{"id": "train_03635", "split": "train", "clip_key": "titan_clip_761_000126_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_761_000126_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_761_000126_movie_t-3_augB1.jpg", "titan_clip_761_000126_movie_t-2_augB1.jpg", "titan_clip_761_000126_movie_t-1_augB1.jpg", "titan_clip_761_000126_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian walking on road", "environment_perception": "A dense urban commercial street with two same-direction lanes and smooth pavement is shown, with slow-moving traffic amid many pedestrians. Delivery trucks are stopped along both curbs, narrowing the roadway. Ahead in the ego lane, a red scooter proceeds cautiously past the rear of a stopped box truck, constraining the ego vehicle's pace. On the left side near the center line, a pedestrian wearing a white shirt and carrying a handbag walks away from the ego car along the roadway because there is no sidewalk, keeping to the edge. In the right lane ahead, a white car creeps forward and pauses as pedestrians cross in front of it, further slowing the stream.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, walking on the left side of the road, away from the ego car, because there is no sidewalk. The pedestrian is walking on the roadway without a sidewalk, requiring the driver to yield to avoid a potential collision."}
{"id": "train_03636", "split": "train", "clip_key": "2020-0131-135401_013322_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "013322"}, "frames": ["2020-0131-135401_013322_movie_t-3.jpg", "2020-0131-135401_013322_movie_t-2.jpg", "2020-0131-135401_013322_movie_t-1.jpg", "2020-0131-135401_013322_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction runs between mid- and high-rise buildings, separated by a solid yellow centerline; the dry pavement looks smooth and traffic is light. A white van approaches in the oncoming lane ahead and, in the middle of the intersection, shifts left to the left-side lane on its side of the road, remaining clear of the ego lane. Farther ahead, a signalized intersection spans the corridor. No pedestrians, cyclists, or obstacles are visible along the curbs.", "hazard_reasoning": "There is a white van lane changing in the middle of the intersection, from the opposite side of the intersection to the left side. The van may cut into your lane unexpectedly at the intersection, so you should slow down to maintain control and avoid a collision."}
{"id": "train_03637", "split": "train", "clip_key": "2020-0228-150133_021630_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "021630"}, "frames": ["2020-0228-150133_021630_movie_t-3.jpg", "2020-0228-150133_021630_movie_t-2.jpg", "2020-0228-150133_021630_movie_t-1.jpg", "2020-0228-150133_021630_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street approaches a railway level crossing with smooth, dry pavement, and the ego vehicle waits in the left lane as traffic flow is halted. A boom barrier is lowered directly in front of the ego car and the railway warning lights operate, stopping vehicles in both directions. Across the tracks ahead, oncoming vehicles including a silver van stand in a short queue facing the ego lane because the crossing is closed. To the right near the gate, a bicyclist waits beside the roadway, stationary at the barrier. On the left approach, a pedestrian with a bicycle stands by the lowered gate, also waiting.", "hazard_reasoning": "There is a boom barrier lowered in front of the ego car. You should stop immediately to avoid entering the crossing while the barrier is down and prevent collision with the tram."}
{"id": "train_03638", "split": "train", "clip_key": "2020-0131-135401_011433_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "011433"}, "frames": ["2020-0131-135401_011433_movie_t-3.jpg", "2020-0131-135401_011433_movie_t-2.jpg", "2020-0131-135401_011433_movie_t-1.jpg", "2020-0131-135401_011433_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs between mid-rise buildings, with a single solid centerline and smooth pavement; traffic appears light. Ahead in the ego lane, a white truck slows and stops for a red traffic signal, so the ego vehicle queues behind it. On the right, an oncoming green taxi proceeds slowly in its lane and passes without conflict. Pedestrians walk along the left sidewalk near trimmed hedges but remain clear of the roadway. Overhead signs include a posted speed limit of 40, and the traffic lights hang above the intersection ahead.", "hazard_reasoning": "There is a white truck stopped in the ego lane because of a red traffic light. The driver should slow down to avoid colliding with the stopped truck and comply with the traffic signal."}
{"id": "train_03639", "split": "train", "clip_key": "2020-0203-154554_070174_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_070174_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_070174_movie_t-3_augB1.jpg", "2020-0203-154554_070174_movie_t-2_augB1.jpg", "2020-0203-154554_070174_movie_t-1_augB1.jpg", "2020-0203-154554_070174_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane in each direction is divided by a painted chevron median; the asphalt is dry and traffic is moderate. Ahead in the ego lane, a red hatchback travels steadily while a gray motorcycle overtakes it within the same lane, moving up the center and briefly occupying space directly ahead of the ego car. To the right beyond the chevron markings, a large red truck approaches in the oncoming lane and continues past without encroaching. Farther ahead near the left curb in the same direction, a small white van proceeds without affecting the ego lane. A blue straight-ahead sign is posted on the left roadside.", "hazard_reasoning": "There is a gray motorcycle overtaking a red vehicle in front of the ego car, in the ego lane. This overtaking maneuver in your lane may lead to a collision, so you should slow down to maintain a safe distance."}
{"id": "train_03640", "split": "train", "clip_key": "2020-0228-150133_011447_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "011447"}, "frames": ["2020-0228-150133_011447_movie_t-3.jpg", "2020-0228-150133_011447_movie_t-2.jpg", "2020-0228-150133_011447_movie_t-1.jpg", "2020-0228-150133_011447_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of truck merging left", "environment_perception": "An urban two-way street with mid-rise buildings and shops comes into view, marked by a solid yellow centerline and dry, smooth pavement, with moderate traffic as the ego approaches a signalized intersection. A white box truck ahead in the ego lane is changing to the left lane toward the curbside, briefly constraining the ego vehicle's pace as it moves over. An oncoming white truck advances in the opposite lane to the right of the centerline and continues straight without encroaching. A small truck on the far side proceeds in its own direction near the curb. Several pedestrians walk or wait along both sidewalks, including one on the right with a dog, but they remain off the roadway. Overhead traffic signals are visible ahead.", "hazard_reasoning": "There is a white truck in front of the ego car changing to the left lane. The truck's lane change could cross the ego-vehicle's path and require a sudden maneuver, so the driver should be aware and prepared."}
{"id": "train_03641", "split": "train", "clip_key": "titan_clip_1135_000336_movie", "source": {"subset": "titan", "scenario": "clip_1135", "frame": "000336"}, "frames": ["titan_clip_1135_000336_movie_t-3.jpg", "titan_clip_1135_000336_movie_t-2.jpg", "titan_clip_1135_000336_movie_t-1.jpg", "titan_clip_1135_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban commercial street features a narrow two-way road without a median, bordered by shops; the pavement is smooth and vehicle traffic is light while pedestrian activity is high. On the left curb near the camera, a tall pedestrian in a striped shirt over a white T-shirt walks toward the ego car and may enter the ego lane. Farther ahead near the center, two pedestrians move leftward across the ego lane, constraining the approach. On the near right edge, a white car is stopped partly in the travel lane, narrowing the passage. In the distance, an oncoming car advances in the opposite lane on the right and remains far.", "hazard_reasoning": "There is a tall man wearing a striped shirt, and a white t-shirt walking on the left side of the road, toward the ego car. Because the pedestrian is approaching the vehicle's path from the road edge, the driver should slow down to avoid a potential collision."}
{"id": "train_03642", "split": "train", "clip_key": "2020-0204-150838_065890_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "065890"}, "frames": ["2020-0204-150838_065890_movie_t-3.jpg", "2020-0204-150838_065890_movie_t-2.jpg", "2020-0204-150838_065890_movie_t-1.jpg", "2020-0204-150838_065890_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban connector under elevated expressways forms a two-lane one-way road with a right-side guardrail and a narrow left shoulder; the pavement looks smooth and traffic is light as the roadway curves gently right. A black dump truck ahead in the ego lane continues straight and slowly pulls away, effectively setting the ego car's pace. A white car farther ahead in the adjacent left lane travels in the same direction and also increases its gap without affecting the ego path. No signals or unusual signs are prominent, and there are no oncoming vehicles.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03643", "split": "train", "clip_key": "titan_clip_388_000402_movie", "source": {"subset": "titan", "scenario": "clip_388", "frame": "000402"}, "frames": ["titan_clip_388_000402_movie_t-3.jpg", "titan_clip_388_000402_movie_t-2.jpg", "titan_clip_388_000402_movie_t-1.jpg", "titan_clip_388_000402_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian.", "environment_perception": "An urban shopping street with a single narrow shared lane and no median, paved with interlocking blocks; storefronts and signs line both sides. Traffic is light and the ego vehicle proceeds straight at low speed. A small white mini-truck is ahead in the same lane moving slowly, setting the pace. On the right side by the shops, a pedestrian wearing a black shirt pushes a trolley toward the ego vehicle and edges into the lane, potentially entering the path. A scooter and other small carts are stopped along the left curb, reducing clearance.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, pushing a trolley on the right side of the road, towards the ego car. The pedestrian may step or sway into the travel lane and obstruct the vehicle's path, so the driver should carefully manoeuvre around them."}
{"id": "train_03644", "split": "train", "clip_key": "2020-0226-140503_080088_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "080088"}, "frames": ["2020-0226-140503_080088_movie_t-3.jpg", "2020-0226-140503_080088_movie_t-2.jpg", "2020-0226-140503_080088_movie_t-1.jpg", "2020-0226-140503_080088_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop due to traffic congestion ahead", "environment_perception": "An urban multi-lane two-way road runs between mid-rise buildings; the pavement looks damp and traffic in the ego's direction is heavy with a long queue toward a distant signalized intersection. A white hatchback directly ahead in the ego lane is stopped because of traffic congestion, keeping the ego vehicle stationary. Ahead-left in the adjacent lane, a white box truck also inches forward in the queue and constrains any lane change. On the far right of the roadway, several oncoming vans travel past the jam in their lanes at a steady pace. Overhead signals and city signage are visible ahead above the street, and there is no physical median between directions.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane because of traffic congestion. The driver should stop to avoid colliding with the halted vehicle in the congested traffic."}
{"id": "train_03645", "split": "train", "clip_key": "titan_clip_617_000108_movie", "source": {"subset": "titan", "scenario": "clip_617", "frame": "000108"}, "frames": ["titan_clip_617_000108_movie_t-3.jpg", "titan_clip_617_000108_movie_t-2.jpg", "titan_clip_617_000108_movie_t-1.jpg", "titan_clip_617_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban side street with a single narrow lane and no median runs between shopfronts; pavement is smooth, and traffic is light with no motor vehicles moving. A pedestrian carrying a handbag walks toward the camera in the ego lane because there is no sidewalk, and she may occupy the vehicle's path. A cyclist ahead near the lane center travels away at low speed, likely constraining the pace. Another pedestrian stands at the right edge by a shuttered storefront and looks toward the road, close enough to step into the lane. Parked bicycles line the right curb and orange cones sit at a left-side entrance, narrowing usable space.", "hazard_reasoning": "There is a pedestrian carrying a handbag walking towards the ego car, in the ego lane, because there is no sidewalk. The driver should manoeuvre carefully around the pedestrian to avoid a collision under these conditions."}
{"id": "train_03646", "split": "train", "clip_key": "titan_clip_679_000096_movie", "source": {"subset": "titan", "scenario": "clip_679", "frame": "000096"}, "frames": ["titan_clip_679_000096_movie_t-3.jpg", "titan_clip_679_000096_movie_t-2.jpg", "titan_clip_679_000096_movie_t-1.jpg", "titan_clip_679_000096_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single vehicle lane and no median runs between buildings; the asphalt is smooth and overall traffic is light with no moving cars. Ahead, a pedestrian wearing a white shirt and black pants walks in the middle of the road, moving away from the ego car and drifting toward the right, occupying the travel lane and constraining the approach. On the right edge near the foreground, another pedestrian walks toward the camera partly in the roadway, further reducing available width. Farther ahead by the left curb, a pedestrian proceeds along the edge without entering the lane. Parked bicycles and orange cones line the left sidewalk, slightly narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking in the middle of the road, toward the right side and away from the ego car. The pedestrian's position in the roadway is unpredictable and could lead to a collision if not approached cautiously, so the driver should reduce speed as recommended."}
{"id": "train_03647", "split": "train", "clip_key": "2020-0207-101955_121917_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "121917"}, "frames": ["2020-0207-101955_121917_movie_t-3.jpg", "2020-0207-101955_121917_movie_t-2.jpg", "2020-0207-101955_121917_movie_t-1.jpg", "2020-0207-101955_121917_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision ahead", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway with a right-side curb; the pavement is dry and traffic is heavy and largely stopped. A white van directly ahead in the ego lane is stationary because of congestion ahead, holding the ego car at a stop. In the adjacent lane to the left, a pink refuse truck just ahead remains queued with brake lights on, advancing only slightly. Farther ahead in the middle lane, a tall box truck waits in the line of traffic and blocks forward view. The right shoulder is narrow beside the curb and viaduct columns, with no oncoming traffic visible.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Driver should stop immediately to avoid collision with the stopped van ahead."}
{"id": "train_03648", "split": "train", "clip_key": "titan_clip_359_000552_movie", "source": {"subset": "titan", "scenario": "clip_359", "frame": "000552"}, "frames": ["titan_clip_359_000552_movie_t-3.jpg", "titan_clip_359_000552_movie_t-2.jpg", "titan_clip_359_000552_movie_t-1.jpg", "titan_clip_359_000552_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban shopping street with a single narrow shared lane paved with block stones has no divider, and traffic is light and slow. A black hatchback ahead in the ego lane rolls steadily down the center, gently constraining the ego vehicle's pace. Pedestrians along both curbs browse storefronts; one at the right edge walks close to the lane near the ego path. A red traffic cone stands on the right within the ego lane beside a row of parked bicycles, guiding vehicles away from them, and additional cones and signboards line both sides, further narrowing the roadway.", "hazard_reasoning": "There is a red traffic cone on the right side of the road, in the ego lane, to prevent vehicles from colliding with the parked bikes behind it. The cone blocks part of the driving lane and the driver must navigate around it to avoid hitting the parked bicycles."}
{"id": "train_03649", "split": "train", "clip_key": "titan_clip_29_000432_movie", "source": {"subset": "titan", "scenario": "clip_29", "frame": "000432"}, "frames": ["titan_clip_29_000432_movie_t-3.jpg", "titan_clip_29_000432_movie_t-2.jpg", "titan_clip_29_000432_movie_t-1.jpg", "titan_clip_29_000432_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane each direction climbs gently uphill between buildings, with patched asphalt and no median; traffic remains light. A white van is far ahead in the oncoming lane descending toward the camera, keeping to its side and not affecting the ego lane. A pedestrian on the right sidewalk near the foreground walks in the same direction as the ego vehicle while staying on the walkway. Another pedestrian farther ahead on the right side moves along the building line, also remaining off the roadway. A posted 30 speed-limit sign is visible on the left, and construction scaffolding and cones line the kerbs, slightly narrowing the verge without obstructing the lane.", "hazard_reasoning": "No hazards are present in the caption, and all traffic participants are stationary or distant. Driving conditions appear normal, so no warning is required."}
{"id": "train_03650", "split": "train", "clip_key": "titan_clip_1271_000216_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1271_000216_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1271_000216_movie_t-3_augB1.jpg", "titan_clip_1271_000216_movie_t-2_augB1.jpg", "titan_clip_1271_000216_movie_t-1_augB1.jpg", "titan_clip_1271_000216_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban neighborhood street without a center divider is ahead, the asphalt smooth and dry and vehicular traffic light with no oncoming cars visible. Ahead in the ego lane, three pedestrians wearing black pants and backpacks walk together in the middle of the road away from the car, occupying the lane and constraining its pace. On the right, a pedestrian stands near the edge by planters and shops, staying out of the lane. Parked bicycles line the left side, and a freestanding caf sign and raised planters on the right further narrow the usable roadway.", "hazard_reasoning": "There are three pedestrians talking in a group, wearing black pants and backpacks, walking in the middle of the road away from the ego car. They occupy the driving lane and may change direction without warning, so the driver should slow down to avoid a potential collision."}
{"id": "train_03651", "split": "train", "clip_key": "titan_clip_1218_000516_movie", "source": {"subset": "titan", "scenario": "clip_1218", "frame": "000516"}, "frames": ["titan_clip_1218_000516_movie_t-3.jpg", "titan_clip_1218_000516_movie_t-2.jpg", "titan_clip_1218_000516_movie_t-1.jpg", "titan_clip_1218_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for pedestrian in travel lane", "environment_perception": "A narrow urban shopping street with a single shared lane and no marked centerline runs between buildings; pavement looks smooth and traffic is light but space is tight. Ahead in the ego lane, a pedestrian in a blue shirt and blue pants carrying handbags walks away from the car within the roadway because there is no sidewalk, remaining in the vehicle's path. Slightly right of center, a cyclist rides away in the same lane, potentially constraining speed. Near the left edge farther ahead, another pedestrian in a white shirt also walks away within the lane. A 30 speed-limit sign is visible ahead. A small flatbed truck is stopped along the left side, intruding into the lane and narrowing the passage.", "hazard_reasoning": "There's a pedestrian wearing a blue shirt and blue pants, carrying handbags, walking in the ego lane, away from the ego car, because the lane is narrow and there is no sidewalk. The driver should stop for the pedestrian who is forced into the travel lane to avoid a collision."}
{"id": "train_03652", "split": "train", "clip_key": "2020-0220-151845_052817_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "052817"}, "frames": ["2020-0220-151845_052817_movie_t-3.jpg", "2020-0220-151845_052817_movie_t-2.jpg", "2020-0220-151845_052817_movie_t-1.jpg", "2020-0220-151845_052817_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain a safe distance", "environment_perception": "An urban elevated two-lane road runs under a flyover, bounded by concrete barriers, with dry pavement and slow, moderate traffic. A large flatbed truck carrying a yellow-tarped load travels ahead in the left ego lane and slows with a short queue forming ahead, constraining the ego vehicle's pace. To the right, a black SUV runs alongside and then edges forward in the adjacent lane, limiting any lane change. Farther ahead in that right lane, a small white van continues straight in the same slow stream.", "hazard_reasoning": "There's a pink semi-truck slowing down in the ego lane because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_03653", "split": "train", "clip_key": "2020-0220-102630_074860_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "074860"}, "frames": ["2020-0220-102630_074860_movie_t-3.jpg", "2020-0220-102630_074860_movie_t-2.jpg", "2020-0220-102630_074860_movie_t-1.jpg", "2020-0220-102630_074860_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated two-way road with a single lane in each direction, divided by a solid yellow centerline and lined by side barriers, has smooth pavement and generally light flow. A white van ahead in the ego lane slows due to traffic congestion and thus constrains the ego vehicle's pace. In the opposite lane, a distant oncoming car continues straight without affecting the ego path.", "hazard_reasoning": "A white van is slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and adapt to the congested traffic ahead."}
{"id": "train_03654", "split": "train", "clip_key": "2020-0131-103016_013702_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "013702"}, "frames": ["2020-0131-103016_013702_movie_t-3.jpg", "2020-0131-103016_013702_movie_t-2.jpg", "2020-0131-103016_013702_movie_t-1.jpg", "2020-0131-103016_013702_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way street with smooth pavement curves gently right, separated from oncoming lanes by a wide hatched painted median; traffic appears light and flows steadily toward a signalized intersection ahead. A white box truck ahead in the ego lane near the left curb proceeds slowly straight, potentially constraining the ego vehicle's pace as the road bends. A dark passenger car farther ahead to the right in the adjacent lane continues straight at a similar speed, remaining alongside but not encroaching into the ego lane. Several oncoming cars in the far-right lanes travel through the intersection, remaining separated by the painted divider. A circular speed-limit sign is posted on the left side of the street.", "hazard_reasoning": "No hazards detected; the clear road and diffuse lighting indicate safe driving conditions, so no immediate warning is needed."}
{"id": "train_03655", "split": "train", "clip_key": "titan_clip_554_000318_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_554_000318_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_554_000318_movie_t-3_augB1.jpg", "titan_clip_554_000318_movie_t-2_augB1.jpg", "titan_clip_554_000318_movie_t-1_augB1.jpg", "titan_clip_554_000318_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban street with smooth pavement curves right, forming a single left-hand lane without a median, and traffic is light. A black van ahead in the ego lane proceeds toward the rightward bend and slows slightly, setting the pace. A pedestrian wearing a black cap and a red T-shirt crosses from the left side to the right in front of the ego car, briefly entering the lane and becoming the primary conflict. Two other pedestrians walk along the left sidewalk behind a low fence and remain off the roadway. No salient signals are visible, and sun glare appears ahead.", "hazard_reasoning": "There is a pedestrian wearing a black cap with a red t-shirt crossing the street from the left side to the right side in front of the ego car. The driver must stop to avoid a collision with the pedestrian crossing directly ahead."}
{"id": "train_03656", "split": "train", "clip_key": "2020-0226-101332_044881_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "044881"}, "frames": ["2020-0226-101332_044881_movie_t-3.jpg", "2020-0226-101332_044881_movie_t-2.jpg", "2020-0226-101332_044881_movie_t-1.jpg", "2020-0226-101332_044881_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection amid high-rise buildings; the pavement looks smooth and traffic is moderate. A white van ahead in the ego lane drives straight through the junction under a green light, leading the ego car and setting its pace. Cars in the adjacent right lane travel parallel through the intersection and remain in their lane without merging. On the cross street, several vehicles wait behind the zebra crossing, yielding to the ego direction under their red signal.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane, because of the green traffic light. The white van may proceed when the signal changes, so following it helps maintain safe speed and spacing."}
{"id": "train_03657", "split": "train", "clip_key": "2020-0225-145150_023505_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "023505"}, "frames": ["2020-0225-145150_023505_movie_t-3.jpg", "2020-0225-145150_023505_movie_t-2.jpg", "2020-0225-145150_023505_movie_t-1.jpg", "2020-0225-145150_023505_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban depressed roadway with high concrete walls runs straight, appearing as a two-lane two-way road with a solid orange centerline and hatched buffer; the pavement is smooth and traffic is light with no oncoming vehicles visible. Ahead in the ego lane, a silver minivan with roof cargo boxes slows slightly, so the ego vehicle follows at a reduced pace. No other road users or salient traffic signals appear, and there are no obstacles along the clear lanes.", "hazard_reasoning": "There is a gray hatchback slowing down in the ego lane. You should slow down to maintain a safe following distance as the vehicle ahead is decelerating."}
{"id": "train_03658", "split": "train", "clip_key": "titan_clip_699_000144_movie", "source": {"subset": "titan", "scenario": "clip_699", "frame": "000144"}, "frames": ["titan_clip_699_000144_movie_t-3.jpg", "titan_clip_699_000144_movie_t-2.jpg", "titan_clip_699_000144_movie_t-1.jpg", "titan_clip_699_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with shops and apartments has no center line and smooth pavement, and there are no other vehicles, so movement is slow and shaped by pedestrians. Ahead in the middle of the road, a pedestrian wearing a white shirt and shorts walks away from the ego car, occupying the vehicle's path. On the left edge near the building, a man in dark clothes walks toward the ego vehicle along the roadway margin, close to the lane. On the right by a storefront, another pedestrian walks toward the ego vehicle along the brick verge at the edge of the lane. Farther ahead, a small group of people stand and move near the roadway, narrowing the passage, and potted plants and shop displays encroach slightly into the edges.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and shorts who is walking in the middle of the road, away from the ego car. This pedestrian poses a collision risk in the center of the lane, so the driver should slow down to maintain safety and avoid hitting them."}
{"id": "train_03659", "split": "train", "clip_key": "2020-0204-103442_035619_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "035619"}, "frames": ["2020-0204-103442_035619_movie_t-3.jpg", "2020-0204-103442_035619_movie_t-2.jpg", "2020-0204-103442_035619_movie_t-1.jpg", "2020-0204-103442_035619_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway runs through a covered tunnel-like section with two same-direction lanes, guardrails on both sides, and smooth pavement; traffic is moderate and gradually slowing. Directly ahead in the ego lane, a white box truck decelerates because traffic bunches farther ahead, so it constrains the ego car's pace. In the adjacent right lane, a silver hatchback draws alongside and continues forward slightly faster, overtaking. Farther ahead in the right lane, a darker truck proceeds at a steady speed behind more vehicles, reinforcing the slowdown. No signals or speed signs are clearly visible, and there is no oncoming traffic on this divided facility.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. Slow down to avoid collision as the truck decelerates due to congestion."}
{"id": "train_03660", "split": "train", "clip_key": "2020-0212-102546_027540_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "027540"}, "frames": ["2020-0212-102546_027540_movie_t-3.jpg", "2020-0212-102546_027540_movie_t-2.jpg", "2020-0212-102546_027540_movie_t-1.jpg", "2020-0212-102546_027540_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the white van turning left", "environment_perception": "An urban arterial runs under an elevated expressway with a planted median; the ego vehicle travels in the leftmost lane on smooth pavement amid moderate same-direction traffic. A white van directly ahead in the ego lane slows and turns left at the junction on a green signal, briefly constraining the ego's pace. A silver sedan in the adjacent right lane continues straight and overtakes. Farther right, a line of cars moves steadily through the intersection. A guardrail and sidewalk line the left edge, and no obstacles appear in the lane.", "hazard_reasoning": "There is a white van turning left in front of the ego car in the ego lane because of green traffic lights. Since the van is crossing your path, you should be aware to adjust your speed accordingly."}
{"id": "train_03661", "split": "train", "clip_key": "titan_clip_1004_000246_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1004_000246_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1004_000246_movie_t-3_augB1.jpg", "titan_clip_1004_000246_movie_t-2_augB1.jpg", "titan_clip_1004_000246_movie_t-1_augB1.jpg", "titan_clip_1004_000246_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "A dense urban shopping street has a narrow undivided single lane on brick paving, bordered by storefronts; vehicle traffic is light and speeds are slow. Ahead on the right, a woman in a black dress, talking on a phone, walks toward the vehicle in the ego lane as she maneuvers around a white van parked at the right curb, briefly occupying the path. The white van remains stopped by the storefront and slightly protrudes into the lane, constricting clearance. Another pedestrian further ahead near the lane center walks toward the ego car and influences its pace. Other pedestrians keep to the sidewalks.", "hazard_reasoning": "There is a female pedestrian in a black dress, talking on a cell phone, who is walking on the right side of the road, towards the ego-car, in the ego lane, because she is maneuvering around a parked van. The driver should carefully manoeuvre around the pedestrian to avoid a collision as she may step further into the lane while bypassing the parked van."}
{"id": "train_03662", "split": "train", "clip_key": "titan_clip_701_000282_movie", "source": {"subset": "titan", "scenario": "clip_701", "frame": "000282"}, "frames": ["titan_clip_701_000282_movie_t-3.jpg", "titan_clip_701_000282_movie_t-2.jpg", "titan_clip_701_000282_movie_t-1.jpg", "titan_clip_701_000282_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian ahead", "environment_perception": "A narrow urban commercial street without a centerline curves gently left, forming a single mixed-traffic lane on smooth pavement with light vehicle flow but many pedestrians. In the middle ahead, a pedestrian in a white T-shirt carrying a handbag walks along the lane near the ego vehicle's path, directly occupying the travel line. On the left edge by the storefronts, another pedestrian approaches while keeping close to the curb alongside the lane. Farther ahead, a person crosses from the right toward the center and may enter the ego lane. A small white truck is stopped along the left side, narrowing the available roadway.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, carrying a handbag, walking in the middle of the road, towards the ego car. The driver should slow down to avoid a potential collision with the pedestrian entering the roadway."}
{"id": "train_03663", "split": "train", "clip_key": "2020-0131-103016_007954_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "007954"}, "frames": ["2020-0131-103016_007954_movie_t-3.jpg", "2020-0131-103016_007954_movie_t-2.jpg", "2020-0131-103016_007954_movie_t-1.jpg", "2020-0131-103016_007954_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes runs under elevated structures, bounded by a right-side guardrail on smooth pavement; traffic is moderate and bunches into a short queue at the intersection. A black scooter is stopped in the ego lane directly ahead because the traffic light is red, holding the ego vehicle. A white van farther ahead in the right lane is also halted in the same queue and will proceed straight. A dark sedan slightly left of center ahead slows to a stop at the line, forming the front of the adjacent lane. An overhead signal facing the approach shows red.", "hazard_reasoning": "There is a black scooter stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver should stop to avoid a collision with the halted scooter at the red light."}
{"id": "train_03664", "split": "train", "clip_key": "titan_clip_1246_000540_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1246_000540_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1246_000540_movie_t-3_augB1.jpg", "titan_clip_1246_000540_movie_t-2_augB1.jpg", "titan_clip_1246_000540_movie_t-1_augB1.jpg", "titan_clip_1246_000540_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single vehicle lane runs between buildings, bordered by red-white guardrails; the pavement looks slightly worn and traffic is light with no cars present. Ahead, a pedestrian wearing blue pants and a white shirt walks toward the ego car in the middle of the lane, directly occupying the path and constraining progress. Farther ahead, a few people move along the right edge inside the railings and remain out of the lane. Parked bicycles and storefront clutter line both sides, narrowing lateral clearance but not blocking the roadway.", "hazard_reasoning": "There is a pedestrian wearing blue pants and white shirt, walking toward the ego car in the middle of the lane. The pedestrian is entering the vehicle's path and may collide if the vehicle maintains speed, so the driver should slow down."}
{"id": "train_03665", "split": "train", "clip_key": "2020-0217-110854_023940_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "023940"}, "frames": ["2020-0217-110854_023940_movie_t-3.jpg", "2020-0217-110854_023940_movie_t-2.jpg", "2020-0217-110854_023940_movie_t-1.jpg", "2020-0217-110854_023940_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and an orange centerline approaches a signalized intersection, and traffic is slow and stopped. The ego car proceeds in the left lane of its direction. An orange airport limousine bus is directly ahead in the ego lane, stopped for a red traffic light and blocking the path. A silver van in the lane to the left is also stopped alongside, limiting room to maneuver. A pedestrian stands on the right sidewalk near the crosswalk, waiting as the signal holds. The overhead signal shows red for the ego direction.", "hazard_reasoning": "There is an orange bus stopped in the ego lane, in front of the ego car, because of the red traffic lights. The driver should stop to maintain a safe following distance and comply with the red light signal."}
{"id": "train_03666", "split": "train", "clip_key": "titan_clip_921_000204_movie", "source": {"subset": "titan", "scenario": "clip_921", "frame": "000204"}, "frames": ["titan_clip_921_000204_movie_t-3.jpg", "titan_clip_921_000204_movie_t-2.jpg", "titan_clip_921_000204_movie_t-1.jpg", "titan_clip_921_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban backstreet with buildings tight to the curb forms a narrow two-way road without a marked centerline; the asphalt looks dry and intact and traffic is light. An oncoming silver van approaches on the right side at low speed, constraining space for the ego vehicle. A pedestrian wearing a long white shirt walks ahead on the left side away from the ego along the curb, as noted. Another pedestrian on the right foreground walks toward the camera beside the curb and is close to the travel lane. Parked vehicles and a garage entrance on the left further narrow the corridor, but no salient signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a long white shirt, walking on the left side of the road, away from the ego car, The driver should slow down because the pedestrian may unexpectedly enter the roadway given the narrow street and blind curve."}
{"id": "train_03667", "split": "train", "clip_key": "2020-0228-102841_050727_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "050727"}, "frames": ["2020-0228-102841_050727_movie_t-3.jpg", "2020-0228-102841_050727_movie_t-2.jpg", "2020-0228-102841_050727_movie_t-1.jpg", "2020-0228-102841_050727_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane city street with dry, well-marked pavement shows heavy, mostly stopped same-direction traffic and no visible median. A white van directly ahead in the ego lane is stopped because of congestion ahead and blocks the path. To the right, a large box truck in the adjacent lane stands alongside at close range, restricting lateral space. To the left, a white passenger car just ahead near the curb is also stopped in the queue, keeping the pace halted.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane because of the traffic congestion ahead. You should stop to avoid colliding with the stationary vehicle."}
{"id": "train_03668", "split": "train", "clip_key": "2020-0221-115122_025609_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "025609"}, "frames": ["2020-0221-115122_025609_movie_t-3.jpg", "2020-0221-115122_025609_movie_t-2.jpg", "2020-0221-115122_025609_movie_t-1.jpg", "2020-0221-115122_025609_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial under an elevated expressway has three same-direction lanes with smooth, dry pavement, and traffic moves at a moderate, steady pace. In the ego lane, a white car directly ahead accelerates and pulls away, opening a gap in front. Ahead-left, a small white box truck continues in the left lane near the curb at a slightly slower pace but remains in its lane and outside the ego path. To the right, a black minivan in the adjacent lane travels nearly alongside and slightly ahead, limiting space for a rightward lane change.", "hazard_reasoning": "There is a white SUV accelerating in the ego lane. The lead vehicle's sudden speed increase requires you to start moving to maintain safe following distance and traffic flow."}
{"id": "train_03669", "split": "train", "clip_key": "2020-0131-103016_054107_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "054107"}, "frames": ["2020-0131-103016_054107_movie_t-3.jpg", "2020-0131-103016_054107_movie_t-2.jpg", "2020-0131-103016_054107_movie_t-1.jpg", "2020-0131-103016_054107_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with three same-direction lanes curves gently right on smooth, dry pavement, and traffic flows at a moderate, steady pace. Ahead slightly left, a black hatchback moves from the left lane into the ego lane, merging in front and briefly constraining our lane. Farther ahead in the adjacent right lane, a small white flatbed truck continues straight at a similar speed without changing lanes. Across the raised median on the right, oncoming traffic moves steadily along the opposite carriageway. At the left curb near the camera, a white kei van and a delivery scooter are stopped by the sidewalk, remaining outside the travel lanes.", "hazard_reasoning": "There is a black hatchback lane changing from the left lane to the ego lane. You should slow down to maintain a safe distance and avoid a collision as the vehicle merges into your lane."}
{"id": "train_03670", "split": "train", "clip_key": "2020-0228-102841_041498_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "041498"}, "frames": ["2020-0228-102841_041498_movie_t-3.jpg", "2020-0228-102841_041498_movie_t-2.jpg", "2020-0228-102841_041498_movie_t-1.jpg", "2020-0228-102841_041498_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between tall buildings; the dry pavement looks smooth and traffic is heavy in stop-and-go flow. A white minivan directly ahead in the ego lane is stopped because congestion continues up the road, so the ego car waits behind it. In the right lane, a silver van edges forward past the ego vehicle and continues straight within its lane. Farther ahead in that lane, another white van slows with the queue, remaining clear of the ego path. On the left, a yellow taxi travels alongside slightly behind and keeps its lane without merging. Overhead traffic signals are visible at an intersection ahead.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a collision due to the halted vehicle ahead."}
{"id": "train_03671", "split": "train", "clip_key": "2020-0217-110854_004047_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-110854_004047_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-110854_004047_movie_t-3_augB1.jpg", "2020-0217-110854_004047_movie_t-2_augB1.jpg", "2020-0217-110854_004047_movie_t-1_augB1.jpg", "2020-0217-110854_004047_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow lane and no median runs straight ahead; the asphalt is dry and traffic is heavy and slow. Several vans are stopped along the left curb, narrowing the lane. A white sedan directly ahead in the ego lane slows because a truck further ahead also slows, and this sequence governs the ego car's pace. Farther up, the truck in the same lane creeps toward a stop, creating a short queue. On the right sidewalk, a pedestrian carrying a bag walks near the curb while a bicyclist waits with a bicycle, both close to the roadway and potentially edging toward the lane. Overhead blue guide signs provide directions to nearby districts.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of truck slowing ahead. You should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_03672", "split": "train", "clip_key": "2020-0227-104226_022822_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "022822"}, "frames": ["2020-0227-104226_022822_movie_t-3.jpg", "2020-0227-104226_022822_movie_t-2.jpg", "2020-0227-104226_022822_movie_t-1.jpg", "2020-0227-104226_022822_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road runs under an elevated viaduct, with two same-direction lanes and a guardrail median on the right separating oncoming traffic; the pavement looks smooth and traffic moves at a moderate, steady pace up a slight rise. A white van ahead in the ego lane drives away from the ego car and continues uphill, setting the immediate lead. A blue hatchback slightly ahead to the left travels parallel in the adjacent lane at similar speed and stays in its lane. To the right beyond the barrier, several cars including a dark SUV approach in the opposite direction, well separated from the ego vehicle. No signals or signs are prominent, and no obstacles appear.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. The white van is directly ahead in your lane and could slow or brake suddenly, so the driver should be aware of its movements."}
{"id": "train_03673", "split": "train", "clip_key": "titan_clip_1035_000450_movie", "source": {"subset": "titan", "scenario": "clip_1035", "frame": "000450"}, "frames": ["titan_clip_1035_000450_movie_t-3.jpg", "titan_clip_1035_000450_movie_t-2.jpg", "titan_clip_1035_000450_movie_t-1.jpg", "titan_clip_1035_000450_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian walking ahead", "environment_perception": "An urban commercial street with block-paved surface and no marked lanes leads to a cross street ahead; traffic is light and the way is narrowed by trucks stopped at both curbs. A pedestrian in a blue shirt walks along the right edge toward the ego vehicle, potentially entering its path. A small box truck moves across ahead from left to right on the cross street, briefly blocking the exit. Another truck waits on the right near the intersection with its nose angled outward, occupying part of the travel space. Parked trucks on both sides create a tight corridor and limit sightlines into the intersection.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and walking on the right side of the road, toward the ego car. The pedestrian's path could intersect with the vehicle's trajectory, so the driver should be prepared to react."}
{"id": "train_03674", "split": "train", "clip_key": "2020-0207-151349_052527_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "052527"}, "frames": ["2020-0207-151349_052527_movie_t-3.jpg", "2020-0207-151349_052527_movie_t-2.jpg", "2020-0207-151349_052527_movie_t-1.jpg", "2020-0207-151349_052527_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial beneath an elevated expressway has multiple same-direction lanes with clear painted dividers; the pavement is dry and traffic is heavy and mostly stop-and-go. A white hatchback directly ahead in the ego lane remains stopped because of congestion, holding the vehicle behind. To the right, a large coach bus in the adjacent lane inches forward beside the ego vehicle, reducing lateral space. Farther ahead in the right lanes, several vans and cars queue tightly and creep forward, keeping the flow slow. Bicycles are parked along the left sidewalk behind a guardrail, and no obstacles appear in the lane.", "hazard_reasoning": "A white hatchback is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid rear-end collision with the halted vehicle."}
{"id": "train_03675", "split": "train", "clip_key": "2020-0210-101957_086061_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_086061_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_086061_movie_t-3_augB1.jpg", "2020-0210-101957_086061_movie_t-2_augB1.jpg", "2020-0210-101957_086061_movie_t-1_augB1.jpg", "2020-0210-101957_086061_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Be aware of slowing concrete mixer truck", "environment_perception": "An urban two-way road with one lane each direction and a center yellow line curves gently right; the pavement is sound with a red-textured section and a zebra crossing flanked by narrow curb islands and bollards, and traffic is light to moderate. Ahead in the ego lane, a brown concrete mixer truck slows, setting the pace for the ego vehicle. On the left, cyclists ride along the separated path beside the curb near the crosswalk, remaining outside the traffic lane but close to the ego path. Oncoming cars travel steadily in the right lane through the bend without encroaching on the ego lane.", "hazard_reasoning": "There is a brown concrete mixer truck slowing down in front of the ego car. The ego-vehicle may need to decelerate quickly to maintain safe distance, so the driver should be aware of the slowing truck."}
{"id": "train_03676", "split": "train", "clip_key": "titan_clip_583_000108_movie", "source": {"subset": "titan", "scenario": "clip_583", "frame": "000108"}, "frames": ["titan_clip_583_000108_movie_t-3.jpg", "titan_clip_583_000108_movie_t-2.jpg", "titan_clip_583_000108_movie_t-1.jpg", "titan_clip_583_000108_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban two-way street with one narrow lane per direction, no divider, and smooth pavement; traffic is light but briefly impeded. A gray truck is stopped on the left side ahead for loading or unloading, occupying part of the ego lane and constraining the ego vehicle's path. A worker stands at the truck's rear on the roadway handling goods and moves near the lane, so his position remains relevant to the ego path. An oncoming silver car approaches in the opposite lane near the truck, limiting space for the ego vehicle to go around. Parked vehicles along both curbs further narrow the passage.", "hazard_reasoning": "There's a gray truck stopped, on the left side of the road, because of loading or unloading. The stopped truck partially obstructs the sidewalk and may require you to carefully manoeuvre around it to maintain safe passage."}
{"id": "train_03677", "split": "train", "clip_key": "2020-0212-102546_033602_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "033602"}, "frames": ["2020-0212-102546_033602_movie_t-3.jpg", "2020-0212-102546_033602_movie_t-2.jpg", "2020-0212-102546_033602_movie_t-1.jpg", "2020-0212-102546_033602_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane arterial runs under an elevated expressway, the pavement is smooth, and traffic is moderate and steady, with a curb on the left and a guardrail on the right. Ahead in the ego lane, a white box truck drives away while following traffic further ahead, effectively setting the ego vehicle's pace. In the adjacent right lane, a larger white cargo truck proceeds straight at a similar speed slightly farther ahead, staying in its lane. Along the left curb, a silver car and other parked vehicles remain stationary in a side bay, close to but outside the travel lane. An overhead sign shows a 60 speed limit.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because of traffic moving ahead. Follow the vehicle ahead to maintain safe distance as traffic slows."}
{"id": "train_03678", "split": "train", "clip_key": "titan_clip_43_000210_movie", "source": {"subset": "titan", "scenario": "clip_43", "frame": "000210"}, "frames": ["titan_clip_43_000210_movie_t-3.jpg", "titan_clip_43_000210_movie_t-2.jpg", "titan_clip_43_000210_movie_t-1.jpg", "titan_clip_43_000210_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down.", "environment_perception": "An urban commercial street with a narrow two-way carriageway lacks a centerline and median, the cobblestone pavement looks intact, and overall traffic is light and slow. A gray sedan ahead in the ego lane creeps along near the left curb, constraining the ego vehicle's pace. On the right side, there is a pedestrian wearing a white shirt and blue pants, carrying a handbag, walking away from the ego car along the road edge close to the vehicle path, so the person may enter the lane. A small group of pedestrians stands and walks by storefronts on the right near the curb. Freestanding signboards and awnings tighten side clearances.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, blue pants, carrying a handbag, and walking away from the ego car on the right side of the road. The driver should slow down because the pedestrian may step into the lane unexpectedly."}
{"id": "train_03679", "split": "train", "clip_key": "titan_clip_1162_000270_movie", "source": {"subset": "titan", "scenario": "clip_1162", "frame": "000270"}, "frames": ["titan_clip_1162_000270_movie_t-3.jpg", "titan_clip_1162_000270_movie_t-2.jpg", "titan_clip_1162_000270_movie_t-1.jpg", "titan_clip_1162_000270_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van.", "environment_perception": "An urban commercial side street appears narrow, straight, and brick-paved, with no centerline or median and light traffic. Cones line the left curb, slightly reducing the usable width. A silver van is parked on the left side ahead, occupying part of the lane and forming a pinch point the ego vehicle approaches. A pedestrian on the right ahead walks diagonally into the roadway and continues leftward near the van, moving through the ego path. Farther ahead, a small white car in the same direction proceeds away along the middle of the street, loosely setting the pace. No prominent signals or posted speeds are visible, and the pavement remains dry and smooth throughout.", "hazard_reasoning": "There is a silver van parked on the left side of the road. The parked van reduces the available lane width, requiring you to carefully manoeuvre around it to avoid collision."}
{"id": "train_03680", "split": "train", "clip_key": "titan_clip_1251_000288_movie", "source": {"subset": "titan", "scenario": "clip_1251", "frame": "000288"}, "frames": ["titan_clip_1251_000288_movie_t-3.jpg", "titan_clip_1251_000288_movie_t-2.jpg", "titan_clip_1251_000288_movie_t-1.jpg", "titan_clip_1251_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrians", "environment_perception": "A narrow urban shopping street with a single undivided lane runs between storefronts; the asphalt looks smooth and motor traffic is light with no oncoming vehicles visible. Two pedestrians on the right ahead, one holding an umbrella and the other with a backpack, walk away along the lane edge and may constrain the ego car's pace. Farther ahead on the left, a person walks a dog along the curb, also moving away within the lane. A parked three-wheeled delivery scooter on the right and a stopped truck along the left narrow the available roadway.", "hazard_reasoning": "There are two pedestrians carrying an umbrella and backpack, walking on the right side of the road, away from the ego car. They are close to the roadway and may unexpectedly step into the lane, so the driver should carefully manoeuvre around them."}
{"id": "train_03681", "split": "train", "clip_key": "titan_clip_176_000384_movie", "source": {"subset": "titan", "scenario": "clip_176", "frame": "000384"}, "frames": ["titan_clip_176_000384_movie_t-3.jpg", "titan_clip_176_000384_movie_t-2.jpg", "titan_clip_176_000384_movie_t-1.jpg", "titan_clip_176_000384_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with two narrow lanes and no median comes into view, the pavement is clean and traffic is light as the car approaches a marked crosswalk at an intersection. A group of men wearing white shirts crosses from right to left across the crosswalk directly ahead, occupying the ego lane and requiring a pause. A white box truck in the same lane just beyond the crosswalk is stopped, limiting forward visibility. Farther ahead, a small white van continues away in the same direction with no oncoming vehicles visible.", "hazard_reasoning": "There is a group of men wearing white shirts and crossing the street on a crosswalk, from the right side to the left side. The driver should stop because pedestrians are actively crossing the road and have the right of way to avoid a collision."}
{"id": "train_03682", "split": "train", "clip_key": "2020-0221-115122_015867_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "015867"}, "frames": ["2020-0221-115122_015867_movie_t-3.jpg", "2020-0221-115122_015867_movie_t-2.jpg", "2020-0221-115122_015867_movie_t-1.jpg", "2020-0221-115122_015867_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban arterial runs under an elevated structure with three same-direction lanes, including a curb-separated side lane on the left; the pavement is smooth and traffic is heavy and slow. A white van directly ahead in the ego lane slows because of congestion further ahead, controlling the ego car's pace. In the right lane, a taxi travels alongside and then edges forward while remaining in its lane. In the separated left lane, a line of small vans and cars creeps forward parallel to the ego lane, kept apart by the low median so they do not merge here. Overhead columns and a pedestrian overpass pass by, with no salient signals visible.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Therefore, the driver should stop immediately to avoid a rear-end collision with the slow-moving van."}
{"id": "train_03683", "split": "train", "clip_key": "2020-0205-103411_001966_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "001966"}, "frames": ["2020-0205-103411_001966_movie_t-3.jpg", "2020-0205-103411_001966_movie_t-2.jpg", "2020-0205-103411_001966_movie_t-1.jpg", "2020-0205-103411_001966_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for the pedestrian crossing ahead", "environment_perception": "An urban street approaches a zebra crossing at a small junction, with a single left-hand lane, no median, and dry pavement; traffic is light. Directly ahead, a pedestrian crosses from left to right on the crosswalk carrying a handbag, moving through the ego path and constraining the vehicle to wait. On the left sidewalk, another person nears the crossing and pauses at the curb beside the lane. Farther ahead to the right, a dark car proceeds through the junction and continues away without interacting. Construction fencing and cones line the left, and a low planted island borders the right.", "hazard_reasoning": "There is a pedestrian wearing a black jacket, carrying a handbag, crossing the street at a pedestrian crossing from the left side to the right side. The driver should stop to allow the pedestrian to cross safely and avoid a collision under this situation."}
{"id": "train_03684", "split": "train", "clip_key": "2020-0131-135401_038606_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "038606"}, "frames": ["2020-0131-135401_038606_movie_t-3.jpg", "2020-0131-135401_038606_movie_t-2.jpg", "2020-0131-135401_038606_movie_t-1.jpg", "2020-0131-135401_038606_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way road with a solid yellow centerline and smooth pavement carries light same-direction flow and steady oncoming traffic. Ahead, a white hatchback in the left lane moves right into the ego lane to pass a parked vehicle along the left curb, merging directly in front of the ego car and briefly constraining its pace. To the right, a line of oncoming cars approaches in the opposing lane, maintaining position as they pass. Farther ahead, another small car continues straight in the ego lane at moderate speed. An overhead circular sign shows 40, and metal railings line both sides of the street, with the parked vehicle on the left forming a temporary roadside obstruction.", "hazard_reasoning": "There is a white hatchback lane changing in front of the ego car, from the left lane to the ego lane, because of the parked vehicle on the left. Therefore, the driver should follow the vehicle ahead to maintain a safe distance and anticipate its movements."}
{"id": "train_03685", "split": "train", "clip_key": "2020-0220-102630_069760_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "069760"}, "frames": ["2020-0220-102630_069760_movie_t-3.jpg", "2020-0220-102630_069760_movie_t-2.jpg", "2020-0220-102630_069760_movie_t-1.jpg", "2020-0220-102630_069760_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs between mid-rise buildings, separated from oncoming traffic by a hedge median, and the pavement appears smooth; traffic is moderate and mostly steady. A white van directly ahead in the ego lane slows, constraining the ego car's pace because a truck is moving into this lane ahead. Farther ahead, a large box truck from the neighboring lane merges into the ego lane, prompting the slowdown. On the right, a black SUV in the right lane overtakes and continues straight without conflict.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of a truck lane changing into the ego lane ahead. Slow down to maintain a safe following distance because the truck's merge is causing unexpected deceleration of the van."}
{"id": "train_03686", "split": "train", "clip_key": "titan_clip_984_000492_movie", "source": {"subset": "titan", "scenario": "clip_984", "frame": "000492"}, "frames": ["titan_clip_984_000492_movie_t-3.jpg", "titan_clip_984_000492_movie_t-2.jpg", "titan_clip_984_000492_movie_t-1.jpg", "titan_clip_984_000492_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban two-way street with storefronts lines both sides, the ego car moving along the left lane on worn asphalt with no median and light traffic. An oncoming cyclist wearing a white shirt and carrying a bag rides toward the ego car along the right side of the road, keeping near the curb but approaching the center where the space narrows. A pedestrian at the left storefront steps to the curb and hesitates at the edge of the travel lane, close to the ego vehicle's path. Several bicycles are parked along the left curb near the shops, narrowing the usable lane and constraining the ego vehicle's course. No signals are visible in the scene.", "hazard_reasoning": "There is a cyclist wearing a white shirt, carrying a bag, cycling on the right side of the road, towards the ego car. The driver should carefully manoeuvre to maintain a safe distance and prevent collision with the cyclist."}
{"id": "train_03687", "split": "train", "clip_key": "titan_clip_51_000216_movie", "source": {"subset": "titan", "scenario": "clip_51", "frame": "000216"}, "frames": ["titan_clip_51_000216_movie_t-3.jpg", "titan_clip_51_000216_movie_t-2.jpg", "titan_clip_51_000216_movie_t-1.jpg", "titan_clip_51_000216_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the worker", "environment_perception": "An urban residential street with a narrow two-way carriageway and no median runs between close buildings; the pavement looks smooth and traffic is light, but the lane narrows at a roadside work zone ahead. A construction worker holding an orange baton stands ahead slightly left in the ego lane, directing traffic passing through and indicating that vehicles may need to stop or proceed slowly. A large construction truck with a crane is stopped just ahead, occupying much of the left side and constraining the ego vehicle's path. Another worker stands by bicycles on the far left, attending the site without entering the lane. A white van is parked along the right curb, further reducing clearance.", "hazard_reasoning": "There is a construction worker holding an orange baton and standing on the left side of the road, because he is controlling traffic passing through. The worker and the partial lane obstruction require the driver to manoeuvre carefully to avoid collision and maintain safety."}
{"id": "train_03688", "split": "train", "clip_key": "titan_clip_244_000426_movie", "source": {"subset": "titan", "scenario": "clip_244", "frame": "000426"}, "frames": ["titan_clip_244_000426_movie_t-3.jpg", "titan_clip_244_000426_movie_t-2.jpg", "titan_clip_244_000426_movie_t-1.jpg", "titan_clip_244_000426_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian near road", "environment_perception": "A narrow urban two-way street with no centerline runs between tall buildings and a scaffolded facade on the right; the pavement is smooth and traffic is light as the ego vehicle proceeds along the left side. A box truck ahead along the left curb is stopped partly in the ego lane, constraining the approach. A person wearing a blue shirt and gray pants stands on the left beside that truck looking at a phone, close to the roadway near the ego path. A larger flatbed truck is parked on the near left in the same direction, further narrowing usable space. A pedestrian on the right sidewalk walks away under an umbrella and remains off the carriageway.", "hazard_reasoning": "There is a person wearing a blue shirt with gray pants standing on the left side of the ego car looking at his phone. This distracted pedestrian could step into the road unexpectedly, so the driver should be aware."}
{"id": "train_03689", "split": "train", "clip_key": "titan_clip_16_000378_movie", "source": {"subset": "titan", "scenario": "clip_16", "frame": "000378"}, "frames": ["titan_clip_16_000378_movie_t-3.jpg", "titan_clip_16_000378_movie_t-2.jpg", "titan_clip_16_000378_movie_t-1.jpg", "titan_clip_16_000378_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped white van", "environment_perception": "An urban commercial street with a single left-hand traffic lane and no median passes shops; the pavement is smooth and traffic is light. A white van is stopped ahead on the left side within the ego lane, partly blocking the path and setting the pace. A bicyclist on the right sidewalk rides slowly forward near the curb, moving parallel to the ego vehicle and may enter the lane. A pedestrian exits a restaurant on the right and walks along the sidewalk close to the curb, briefly approaching the roadway but staying on the sidewalk. Scaffolding and cones line the left frontage, narrowing the roadside without encroaching on the lane.", "hazard_reasoning": "There is a white van stopped on the left side of the road, in the ego lane. The stopped van blocks the travel lane, so the driver should carefully manoeuvre around it to avoid a collision."}
{"id": "train_03690", "split": "train", "clip_key": "2020-0207-151349_074397_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "074397"}, "frames": ["2020-0207-151349_074397_movie_t-3.jpg", "2020-0207-151349_074397_movie_t-2.jpg", "2020-0207-151349_074397_movie_t-1.jpg", "2020-0207-151349_074397_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated expressway with two lanes in the ego direction; the rightmost lane is edged by a guardrail, the pavement worn, and traffic flows moderately. A brown truck directly ahead in the ego lane pulls away as the signal ahead is green, guiding the ego vehicle's pace. A white hatchback slightly ahead in the lane to the left continues straight at similar speed, limiting an immediate lane change. Pedestrians move along the left sidewalk behind railings without entering the roadway.", "hazard_reasoning": "There is a brown truck driving away from the ego car, in the ego lane, because of the green traffic light, in front of the ego car. The driver should be aware of the leading truck since its speed or signal may change soon, requiring prompt response."}
{"id": "train_03691", "split": "train", "clip_key": "2020-0213-143552_037286_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "037286"}, "frames": ["2020-0213-143552_037286_movie_t-3.jpg", "2020-0213-143552_037286_movie_t-2.jpg", "2020-0213-143552_037286_movie_t-1.jpg", "2020-0213-143552_037286_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane road runs under an elevated expressway, with smooth asphalt and a marked side bay on the right; traffic flows light to moderate in the same direction. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. A silver cargo truck is close in the left adjacent lane and proceeds forward slightly faster, passing the ego vehicle. Farther ahead near the left curb, a small utility truck is stopped and may merge into the travel lane. An overhead circular speed-limit sign shows 50.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The driver should follow the vehicle ahead to maintain a safe distance and adjust speed to avoid collision."}
{"id": "train_03692", "split": "train", "clip_key": "2020-0127-132751_094091_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "094091"}, "frames": ["2020-0127-132751_094091_movie_t-3.jpg", "2020-0127-132751_094091_movie_t-2.jpg", "2020-0127-132751_094091_movie_t-1.jpg", "2020-0127-132751_094091_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane per direction runs between a construction site on the left and apartment buildings on the right; the asphalt looks worn but dry and traffic is light to moderate. A gray van ahead in the ego lane drives away at a steady speed, setting the ego car's following distance. Two oncoming cars in the right lane approach and pass straight through without deviating toward the ego path. A circular 40 sign is posted overhead indicating the speed limit as the scene moves past a wide zebra crossing and roadside guardrails.", "hazard_reasoning": "There is a gray van driving away from the ego car in the ego lane. The van could slow or brake unexpectedly, so the driver should be cautious of its movements."}
{"id": "train_03693", "split": "train", "clip_key": "titan_clip_345_000582_movie", "source": {"subset": "titan", "scenario": "clip_345", "frame": "000582"}, "frames": ["titan_clip_345_000582_movie_t-3.jpg", "titan_clip_345_000582_movie_t-2.jpg", "titan_clip_345_000582_movie_t-1.jpg", "titan_clip_345_000582_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "A narrow urban shopping street with a single shared lane paved in interlocking bricks has no marked centerline and no visible motor traffic; the ego vehicle proceeds slowly amid moderate pedestrian flow. On the left edge ahead, a man in a blue shirt and black pants walks away from the ego car along the curb and may drift into the travel path, so he sets the pace. Farther ahead in the center of the lane, a small group of pedestrians walks in both directions, occupying the roadway and further constraining progress. At the right margin near shopfronts, a woman stands and then ambles forward along the edge without entering the lane.", "hazard_reasoning": "A man in a blue shirt and black pants, walking on the left side of the road, away from the ego car. Since he is close to the roadway and his direction may change, the driver should be aware to avoid a potential collision."}
{"id": "train_03694", "split": "train", "clip_key": "titan_clip_891_000246_movie", "source": {"subset": "titan", "scenario": "clip_891", "frame": "000246"}, "frames": ["titan_clip_891_000246_movie_t-3.jpg", "titan_clip_891_000246_movie_t-2.jpg", "titan_clip_891_000246_movie_t-1.jpg", "titan_clip_891_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane and no median shows worn but serviceable pavement, parked cars lining the left curb, and slow-moving traffic ahead. A white car in the ego lane proceeds slowly behind other vehicles, setting the pace. Farther ahead, a man in a gray T-shirt and black pants crosses the street from right to left in front of the queued cars, entering the ego vehicle's path. At the left curb close to the camera, a person stands beside a parked silver minivan with its tailgate open, occupying part of the lane and further tightening the corridor. The right edge is bordered by a low wall and white railings along a sidewalk.", "hazard_reasoning": "There is a tall man, wearing a gray t-shirt and black pants, crossing the street, from the right side to the left side. The driver should slow down because the pedestrian is crossing directly ahead and may enter the vehicle's path."}
{"id": "train_03695", "split": "train", "clip_key": "titan_clip_878_000138_movie", "source": {"subset": "titan", "scenario": "clip_878", "frame": "000138"}, "frames": ["titan_clip_878_000138_movie_t-3.jpg", "titan_clip_878_000138_movie_t-2.jpg", "titan_clip_878_000138_movie_t-1.jpg", "titan_clip_878_000138_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows the ego-vehicle traveling uphill on a narrow two-way street with a solid centerline, buildings tight to both sides, railings along the sidewalks, and smooth pavement; traffic is light and the oncoming side appears clear. A white convertible edges into view alongside at the near left and continues ahead in the same direction without affecting the ego lane. Two pedestrians walk uphill on the left sidewalk behind the railing, remaining well clear of the roadway. No traffic signals or speed signs are evident. The roadway rises to a crest ahead, slightly limiting the distant view but revealing no obstacles or parked vehicles.", "hazard_reasoning": "No hazards detected in the driving path, as the road is clear, parked vehicles are static, and pedestrian activity remains off the roadway."}
{"id": "train_03696", "split": "train", "clip_key": "titan_clip_214_000570_movie", "source": {"subset": "titan", "scenario": "clip_214", "frame": "000570"}, "frames": ["titan_clip_214_000570_movie_t-3.jpg", "titan_clip_214_000570_movie_t-2.jpg", "titan_clip_214_000570_movie_t-1.jpg", "titan_clip_214_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single travel lane, no median, and smooth pavement runs between tall buildings; traffic is light as the ego vehicle proceeds slowly past curbside parking. Ahead on the right, a pedestrian wearing black pants pushes a cart in the roadway away from the ego vehicle since the cart cannot fit on the sidewalk, moving along the curb and partially occupying the ego lane, which constrains the vehicle's pace. No traffic signals are visible. Parked cars line the left curb, including a white van near the ego, narrowing the available path.", "hazard_reasoning": "There is a pedestrian wearing black pants on the right side of the road pushing a cart away from the ego car because the cart can not fit on the sidewalk. The pedestrian and cart are encroaching on the vehicular lane, so you should slow down to maintain a safe distance."}
{"id": "train_03697", "split": "train", "clip_key": "titan_clip_1363_000306_movie", "source": {"subset": "titan", "scenario": "clip_1363", "frame": "000306"}, "frames": ["titan_clip_1363_000306_movie_t-3.jpg", "titan_clip_1363_000306_movie_t-2.jpg", "titan_clip_1363_000306_movie_t-1.jpg", "titan_clip_1363_000306_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban two-way street with one lane in each direction and no median runs between midrise buildings; the asphalt is smooth, and traffic is light as the ego vehicle proceeds in the left lane. A small white truck travels ahead in the ego lane moving straight, modestly setting the pace. A pedestrian wearing a black shirt crosses ahead from the left toward the right near the middle of the road, moving across the ego lane. Another pedestrian waits at the left curb by the vending machines, standing close to the roadway without stepping out. A 30 speed-limit sign is posted on a pole to the left.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, crossing the street in the middle of the road, from the left side to the right side. The driver should yield to this pedestrian to avoid a collision."}
{"id": "train_03698", "split": "train", "clip_key": "titan_clip_396_000516_movie", "source": {"subset": "titan", "scenario": "clip_396", "frame": "000516"}, "frames": ["titan_clip_396_000516_movie_t-3.jpg", "titan_clip_396_000516_movie_t-2.jpg", "titan_clip_396_000516_movie_t-1.jpg", "titan_clip_396_000516_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped truck", "environment_perception": "An urban commercial street with a single narrow lane and sidewalks on both sides shows smooth pavement and light same-direction traffic with no oncoming vehicles visible. Ahead, a white box truck is stopped slightly left in the ego lane, blocking the path and constraining the vehicle to slow. On the right side mid-block, a pedestrian stands near the curb outside a shop, watching the roadway while remaining on the sidewalk. On the left sidewalk closer to the camera, another pedestrian walks parallel to traffic without approaching the lane. Orange cones and small signs line the left curb but stay off the roadway.", "hazard_reasoning": "There is a white truck stopped on the left side of the road, in the ego lane. The stopped truck obstructs the driving lane and limits visibility, so the driver should carefully manoeuvre around it."}
{"id": "train_03699", "split": "train", "clip_key": "titan_clip_769_000498_movie", "source": {"subset": "titan", "scenario": "clip_769", "frame": "000498"}, "frames": ["titan_clip_769_000498_movie_t-3.jpg", "titan_clip_769_000498_movie_t-2.jpg", "titan_clip_769_000498_movie_t-1.jpg", "titan_clip_769_000498_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the motorcycle", "environment_perception": "An urban residential street is shown, a very narrow two-way road without a centerline, with smooth pavement and light traffic and no visible oncoming vehicles. Ahead on the left edge of the ego lane, a black motorcycle is stopped and a person stands beside it, partly occupying the lane. No other moving road users are visible nearby. Tall walls, hedges, and closely spaced utility poles line both sides, narrowing the corridor.", "hazard_reasoning": "There is a black motorcycle stopped on the left side of the road, in the ego lane. Because the motorcycle occupies the travel lane, the driver should manoeuvre carefully around it to avoid a collision."}
{"id": "train_03700", "split": "train", "clip_key": "2020-0203-114632_002149_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "002149"}, "frames": ["2020-0203-114632_002149_movie_t-3.jpg", "2020-0203-114632_002149_movie_t-2.jpg", "2020-0203-114632_002149_movie_t-1.jpg", "2020-0203-114632_002149_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the white hatchback", "environment_perception": "An urban commercial street with two lanes and a painted center line rises gently ahead; railings and narrow sidewalks border smooth pavement, and traffic is moderate with a steady oncoming stream. Ahead in the ego lane on the left, a white hatchback is parked against the curb, partially blocking the lane and narrowing the path. In the opposite lane to the right, a white sedan approaches downhill at low speed, constraining any move around the obstruction. Farther ahead on the right, a white box truck stands at the curb with a small group of pedestrians nearby but it remains outside the ego lane. Bicycles line the right railing and no traffic signals are clearly visible.", "hazard_reasoning": "There is a white hatchback parked on the left side of the road, in the ego lane. The parked vehicle occupies the lane ahead, so the driver should carefully manoeuvre around it to maintain safe clearance."}
{"id": "train_03701", "split": "train", "clip_key": "2020-0221-115122_016353_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "016353"}, "frames": ["2020-0221-115122_016353_movie_t-3.jpg", "2020-0221-115122_016353_movie_t-2.jpg", "2020-0221-115122_016353_movie_t-1.jpg", "2020-0221-115122_016353_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs beneath an elevated roadway; pavement is dry and traffic is heavy with stop-and-go flow. A white van directly ahead in the left ego lane is stopped due to congestion ahead and holds the ego car at a standstill. To the right, a black SUV in the adjacent lane inches forward in the same queue, limiting any chance to merge around the blockage. Farther ahead, another white van in the right lane slows with brake lights in the jam, indicating the backup extends beyond view. The road threads between large support pillars that compress sight lines, while a hashed shoulder on the left remains clear.", "hazard_reasoning": "A white van is stopped in front of the ego car in the ego lane, due to traffic congestion ahead. The driver should stop to avoid colliding with the stationary van under congested conditions, reducing the risk of a rear-end collision."}
{"id": "train_03702", "split": "train", "clip_key": "2020-0203-154554_042375_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "042375"}, "frames": ["2020-0203-154554_042375_movie_t-3.jpg", "2020-0203-154554_042375_movie_t-2.jpg", "2020-0203-154554_042375_movie_t-1.jpg", "2020-0203-154554_042375_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three lanes in the ego direction and a fence-separated opposite carriageway on the right; the pavement is smooth and traffic is light to moderate and steady. Ahead in the left lane, a gray box truck drives away from the ego car, keeping its lane and modestly setting the pace. Farther ahead in the middle lanes, a few cars continue straight at similar speed without lane changes, leaving a comfortable gap to the ego vehicle. On the separated roadway to the right, oncoming trucks and cars move past steadily without interaction. Overhead blue guide signs for Route 20 indicate straight-ahead travel to Kofu 123 km, Hachioji 35 km, and Takao 5 km.", "hazard_reasoning": "There is a gray truck driving in the left lane, away from the ego car. The driver should be cautious because the truck may change lanes or adjust speed unexpectedly, requiring prompt reaction."}
{"id": "train_03703", "split": "train", "clip_key": "2020-0207-101955_107314_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "107314"}, "frames": ["2020-0207-101955_107314_movie_t-3.jpg", "2020-0207-101955_107314_movie_t-2.jpg", "2020-0207-101955_107314_movie_t-1.jpg", "2020-0207-101955_107314_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, the pavement smooth; a curb lines the left edge, no opposing lanes are visible, and traffic is heavy and largely stopped. The ego vehicle follows a blue sedan directly ahead in the ego lane, stopped because of congestion ahead. Slightly ahead to the left, a small truck with a green-tarped bed creeps in the adjacent lane and could edge toward the ego lane as gaps appear. Farther ahead, a tall box truck in the central lanes rolls slowly with brake lights on, contributing to the queue and shortening sight distance. To the right, a red hatchback and other cars crawl alongside at the same stop-and-go pace. No salient signals or speed signs are visible.", "hazard_reasoning": "There is a blue sedan stopped in the ego lane because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle in the slow-moving queue."}
{"id": "train_03704", "split": "train", "clip_key": "titan_clip_486_000072_movie", "source": {"subset": "titan", "scenario": "clip_486", "frame": "000072"}, "frames": ["titan_clip_486_000072_movie_t-3.jpg", "titan_clip_486_000072_movie_t-2.jpg", "titan_clip_486_000072_movie_t-1.jpg", "titan_clip_486_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "An urban narrow two-way side street with no median runs straight between storefronts on the left and a long construction wall on the right; the pavement is mostly smooth and traffic is light. A pedestrian wearing a white shirt and black pants walks toward the ego along the left edge of the road, close to the lane and potentially entering the path. Ahead on the right, a white delivery truck stands stopped near the curb, partly intruding into the carriageway and constricting the passage. The view shows no active signals or posted speeds, and aside from shop signs on the sidewalk there are no other obstacles in the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants and walking on the left side of the road towards the ego car. The pedestrian is approaching the vehicle's path and could step into the lane unexpectedly, so the driver should be prepared and be aware of pedestrians ahead."}
{"id": "train_03705", "split": "train", "clip_key": "2020-0225-102455_059193_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "059193"}, "frames": ["2020-0225-102455_059193_movie_t-3.jpg", "2020-0225-102455_059193_movie_t-2.jpg", "2020-0225-102455_059193_movie_t-1.jpg", "2020-0225-102455_059193_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three same-direction lanes and a planted central median has smooth pavement and light, steady flow. A white van drives ahead in the ego lane at a constant pace, setting the ego vehicle's following distance. A dark sedan runs slightly farther ahead in the right adjacent lane by the median, continuing straight at a similar speed without affecting the ego lane. Oncoming vehicles move on the opposite side of the median, separated from the ego's path. A pedestrian overpass spans the road ahead.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane. You should follow the vehicle ahead at a safe distance, as it may slow or change lanes unexpectedly."}
{"id": "train_03706", "split": "train", "clip_key": "2020-0205-152530_040042_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "040042"}, "frames": ["2020-0205-152530_040042_movie_t-3.jpg", "2020-0205-152530_040042_movie_t-2.jpg", "2020-0205-152530_040042_movie_t-1.jpg", "2020-0205-152530_040042_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the merging black sedan", "environment_perception": "An urban commercial street with multiple same-direction lanes, painted lane markings and no median has smooth pavement and moderate, steady traffic. Directly ahead, a black sedan changes from the ego lane to the right lane in front of the ego vehicle, briefly narrowing the gap. Ahead in the right lane, a black hatchback continues straight at a similar speed, occupying the space the sedan moves into. Farther ahead in the center lanes, a white van proceeds straight with the flow, setting the pace for vehicles behind.", "hazard_reasoning": "There's a black sedan that's lane changing from the ego lane to the right lane, in front of the ego-car. The sedan's merge ahead of the ego-vehicle may require the driver to adjust speed or steering to maintain a safe distance."}
{"id": "train_03707", "split": "train", "clip_key": "2020-0228-102841_029395_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "029395"}, "frames": ["2020-0228-102841_029395_movie_t-3.jpg", "2020-0228-102841_029395_movie_t-2.jpg", "2020-0228-102841_029395_movie_t-1.jpg", "2020-0228-102841_029395_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist", "environment_perception": "An urban scene shows the ego car at the end of a narrow two-way street meeting a broad multi-lane two-way arterial without a median, with dry, smooth pavement and very light traffic. Ahead in the ego lane, a cyclist wearing a long coat rides away from the camera across the intersection, briefly occupying the intended path. On the left corner, a pedestrian stands beside a small work zone marked with red construction signs and cones, remaining on the sidewalk. Another pedestrian walks along the far right sidewalk on the arterial and keeps clear of the roadway. An overhead traffic signal spans the intersection.", "hazard_reasoning": "There is a cyclist wearing a long coat, cycling in front of and away from the ego car. The cyclist may continue into the vehicle's path unpredictably, so the driver should be ready to adjust speed and steering."}
{"id": "train_03708", "split": "train", "clip_key": "2020-0218-103119_045539_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "045539"}, "frames": ["2020-0218-103119_045539_movie_t-3.jpg", "2020-0218-103119_045539_movie_t-2.jpg", "2020-0218-103119_045539_movie_t-1.jpg", "2020-0218-103119_045539_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane street with buildings close on both sides has dry, smooth pavement and no visible median, and traffic is heavy and stop-and-go. A large white box truck directly ahead in the ego lane is stopped because traffic is queued ahead, blocking our lane and holding us stationary. To its left, a white compact car creeps forward in the adjacent lane, edging past the truck and potentially entering our path when a gap appears. Farther ahead left, a flatbed with a yellow-covered load moves slowly in the same direction, contributing to the queue. Two pedestrians walk along the right sidewalk behind railings without interacting with traffic.", "hazard_reasoning": "There is a white truck stopped in the ego lane, because of traffic congestion ahead. You should stop to maintain a safe distance and avoid a rear-end collision under these conditions."}
{"id": "train_03709", "split": "train", "clip_key": "2020-0226-101332_031235_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "031235"}, "frames": ["2020-0226-101332_031235_movie_t-3.jpg", "2020-0226-101332_031235_movie_t-2.jpg", "2020-0226-101332_031235_movie_t-1.jpg", "2020-0226-101332_031235_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "be aware of slowing sedan", "environment_perception": "An urban multi-lane intersection on a two-way arterial comes into view with dry, well-marked pavement, a painted gore forming a right-turn bay, and moderate to heavy queued traffic near the stop line. Oncoming traffic is visible across the junction while same-direction vehicles bunch ahead. Beside the ego car in the adjacent lane, a red sedan slows with the congestion ahead, pacing the ego and potentially entering its path. Ahead to the left, a white van waits at the line behind a bus, both stationary and limiting the view toward the crosswalk. To the right, several cars follow the curved right-turn lane through the intersection, remaining out of the ego lane.", "hazard_reasoning": "There is a red sedan slowing in the lane, beside the ego-car, because of traffic congestion ahead. The red sedan's unexpected deceleration due to congestion may require you to reduce speed and maintain a safe following distance."}
{"id": "train_03710", "split": "train", "clip_key": "2020-0214-145407_037356_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "037356"}, "frames": ["2020-0214-145407_037356_movie_t-3.jpg", "2020-0214-145407_037356_movie_t-2.jpg", "2020-0214-145407_037356_movie_t-1.jpg", "2020-0214-145407_037356_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban single-lane elevated road runs beside a building and curves gently left; the pavement is smooth and traffic is light. A white box truck ahead in the ego lane slows with brake lights, directly constraining the ego vehicle's pace along the curve. No other moving vehicles are visible nearby. A yellow school zone sign appears on the left fence. Guardrails and the adjacent structure create a narrow corridor and a mild blind curve.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's reduction in speed ahead may require the driver to reduce speed to maintain a safe following distance and avoid collision."}
{"id": "train_03711", "split": "train", "clip_key": "2020-0225-102455_054828_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "054828"}, "frames": ["2020-0225-102455_054828_movie_t-3.jpg", "2020-0225-102455_054828_movie_t-2.jpg", "2020-0225-102455_054828_movie_t-1.jpg", "2020-0225-102455_054828_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with one lane in each direction curves gently right, with a steel guardrail dividing the oncoming side; the pavement appears damp and traffic is moderate. A black boxy car directly ahead in the ego lane moves slowly, constraining the ego vehicle's pace. Farther ahead, several same-direction cars continue around the bend in a short queue, maintaining low speed. On the right, a silver minibus in the separated opposite lane approaches and passes oncoming without affecting the ego path. The roadway shows a 30 speed marking. A wrapped construction site runs along the right beyond the guardrail, but no obstacles extend into the travel lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain a moderate speed and proceed normally."}
{"id": "train_03712", "split": "train", "clip_key": "2020-0213-143552_061541_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "061541"}, "frames": ["2020-0213-143552_061541_movie_t-3.jpg", "2020-0213-143552_061541_movie_t-2.jpg", "2020-0213-143552_061541_movie_t-1.jpg", "2020-0213-143552_061541_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with two lanes in the same direction passes low-rise buildings and a curb island on the right; the pavement is dry and smooth, and traffic is light to moderate with movement restarting. A white box truck directly ahead in the ego lane begins to accelerate and pull away as the traffic in front moves, increasing the gap. In the lane to the left, a dark van rolls forward at low speed alongside, remaining parallel to the truck without encroaching on the ego lane. No oncoming traffic is visible beyond the divider, and no pedestrians or cyclists appear near the roadway.", "hazard_reasoning": "There is a white truck in front of the ego car, starting to move away from the ego car, because the traffic ahead has moved. The driver should start moving to follow the traffic flow and maintain safe progression."}
{"id": "train_03713", "split": "train", "clip_key": "2020-0228-150133_005564_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "005564"}, "frames": ["2020-0228-150133_005564_movie_t-3.jpg", "2020-0228-150133_005564_movie_t-2.jpg", "2020-0228-150133_005564_movie_t-1.jpg", "2020-0228-150133_005564_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane in each direction curves left through a shopping street, with guardrails and narrow sidewalks; the pavement is dry and traffic is light to moderate. A white box truck ahead in the ego lane travels away at a steady pace, leading the ego vehicle. Farther ahead an oncoming vehicle proceeds in its own lane through the bend without deviating. Two pedestrians move along the left sidewalk behind the railing, parallel to the road and outside the carriageway. No salient traffic signals or speed signs are clearly visible.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The truck ahead may brake or slow unexpectedly, so maintain a safe following distance."}
{"id": "train_03714", "split": "train", "clip_key": "titan_clip_1344_000168_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1344_000168_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1344_000168_movie_t-3_augB1.jpg", "titan_clip_1344_000168_movie_t-2_augB1.jpg", "titan_clip_1344_000168_movie_t-1_augB1.jpg", "titan_clip_1344_000168_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with one narrow lane each way and no median runs under trees; pavement is smooth and traffic is light but slow-moving. Ahead in the ego lane a pedestrian wearing a white shirt and black pants is in the middle of the road, crossing from left to right directly across the ego path. A white van and a box truck ahead in the same direction slow near the crossing, constraining the ego vehicle's pace. Numerous vans are parked along the right curb, narrowing the usable lane.", "hazard_reasoning": "A pedestrian wearing a white shirt with black pants is in the middle of the road, crossing the street in front of the ego car, to the right side. The driver should slow down to ensure sufficient time to react and avoid collision with the crossing pedestrian."}
{"id": "train_03715", "split": "train", "clip_key": "titan_clip_873_000492_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_873_000492_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_873_000492_movie_t-3_augB1.jpg", "titan_clip_873_000492_movie_t-2_augB1.jpg", "titan_clip_873_000492_movie_t-1_augB1.jpg", "titan_clip_873_000492_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban street with a single narrow lane in the ego direction has smooth pavement and light vehicle traffic as the car approaches a zebra crossing. On the left near the ego, a pedestrian in a blue T-shirt walks in the roadway toward the car to pass a parked vehicle and may edge into the ego lane. Farther ahead at the crosswalk, a group of pedestrians moves rightward across the ego path, constraining the approach. On the right, several pedestrians continue along the fenced sidewalk without entering the lane. A silver van is parked along the left curb, partly intruding into the lane.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt and walking on the left side of the road, towards the ego car, because of a parked vehicle. The driver should manoeuvre carefully to maintain a safe distance and avoid hitting the pedestrian."}
{"id": "train_03716", "split": "train", "clip_key": "2020-0228-102841_064316_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "064316"}, "frames": ["2020-0228-102841_064316_movie_t-3.jpg", "2020-0228-102841_064316_movie_t-2.jpg", "2020-0228-102841_064316_movie_t-1.jpg", "2020-0228-102841_064316_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban two-way street with no center divider runs between buildings and trees; the dry pavement appears smooth and traffic is light, leading toward a signalized intersection ahead. A white van drives away from the ego-car in the ego lane near the intersection, continuing straight and occupying the path ahead. Two pedestrians on the right sidewalk move along the hedge by a driveway, remaining off the roadway. No oncoming vehicles are visible in the opposite lane. Parked cars sit in recessed bays on the right, and roadside planters slightly constrict the margin without encroaching into the lane.", "hazard_reasoning": "There is a white van driving near the intersection, away from the ego-car, in the ego lane. The van may brake or slow unexpectedly as it approaches the intersection, so the driver should follow the vehicle ahead to maintain a safe distance and avoid collision."}
{"id": "train_03717", "split": "train", "clip_key": "2020-0131-135401_005019_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "005019"}, "frames": ["2020-0131-135401_005019_movie_t-3.jpg", "2020-0131-135401_005019_movie_t-2.jpg", "2020-0131-135401_005019_movie_t-1.jpg", "2020-0131-135401_005019_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid colliding with the stopped truck.", "environment_perception": "An urban two-lane road with a centerline passes apartments on the left and a fenced walkway on the right; the pavement is smooth and traffic in the ego lane is slow. A large white box truck directly ahead in the left lane is stopped, blocking the ego vehicle's path and determining the pace. On the left sidewalk, several pedestrians ahead walk away from the camera, staying on the curb and not entering the lane. On the right edge, a cyclist moves ahead near the guardrail, parallel to traffic and outside the ego lane but approaching the truck's rear. An overhead round sign shows 40. Bright sun from the upper right creates glare and lowers contrast.", "hazard_reasoning": "There is a white truck stopped in front of the ego car. Because the truck is fully stopped and the view ahead is obstructed, the driver must stop promptly to maintain a safe distance and avoid a collision."}
{"id": "train_03718", "split": "train", "clip_key": "titan_clip_1196_000336_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1196_000336_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1196_000336_movie_t-3_augB1.jpg", "titan_clip_1196_000336_movie_t-2_augB1.jpg", "titan_clip_1196_000336_movie_t-1_augB1.jpg", "titan_clip_1196_000336_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow single shared lane and block-paved surface runs between shopfronts; there is no divider and no other vehicles visible, so traffic is light but movement is slow due to pedestrians. Ahead in the middle of the road, a pedestrian dragging a suitcase is walking away from the ego car, occupying the center of the lane and constraining the vehicle's pace. Slightly right of center, two pedestrians also walk away in the same direction close to the travel path, reducing clearance. More pedestrians line both sides near the storefronts and walk along the edges, some edging toward the roadway and may enter the ego lane.", "hazard_reasoning": "A pedestrian dragging a suitcase is walking in the middle of the road, away from the ego car. The pedestrian's position obstructs the vehicle's path and requires slowing down to avoid a collision."}
{"id": "train_03719", "split": "train", "clip_key": "2020-0131-135401_001175_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "001175"}, "frames": ["2020-0131-135401_001175_movie_t-3.jpg", "2020-0131-135401_001175_movie_t-2.jpg", "2020-0131-135401_001175_movie_t-1.jpg", "2020-0131-135401_001175_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane in each direction and a solid centerline runs between mid-rise buildings; the pavement is dry and smooth and overall flow is slow. A white box truck directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle stationary. On the left, several pedestrians walk along the sidewalk near the curb, parallel to traffic and not entering the road. The right edge has a narrow planted strip and dashed side markings, and no oncoming vehicles are immediately visible.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain safe distance and prevent a collision with the slow-moving traffic ahead."}
{"id": "train_03720", "split": "train", "clip_key": "2020-0203-114632_030195_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "030195"}, "frames": ["2020-0203-114632_030195_movie_t-3.jpg", "2020-0203-114632_030195_movie_t-2.jpg", "2020-0203-114632_030195_movie_t-1.jpg", "2020-0203-114632_030195_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop, avoid collision with the van.", "environment_perception": "An urban arterial with one lane each way and a painted median is dry and smooth, and traffic is light. A white van directly ahead in the ego lane is stopped, occupying our path and constraining the pace. A small silver car in the oncoming lane to the right approaches and passes within its lane without affecting us. Pedestrians on both sidewalks move along the shops and linger near the curb but do not enter the road. A blue overhead direction sign indicates through movement for lanes ahead, with no traffic signals or posted speeds clearly visible.", "hazard_reasoning": "There is a white van stopped in the ego lane. The driver should stop to avoid colliding with the stationary vehicle blocking the path under this situation."}
{"id": "train_03721", "split": "train", "clip_key": "titan_clip_1038_000510_movie", "source": {"subset": "titan", "scenario": "clip_1038", "frame": "000510"}, "frames": ["titan_clip_1038_000510_movie_t-3.jpg", "titan_clip_1038_000510_movie_t-2.jpg", "titan_clip_1038_000510_movie_t-1.jpg", "titan_clip_1038_000510_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully", "environment_perception": "A narrow urban two-way street with no median and smooth pavement appears quiet with light traffic. A black van is parked on the right beside storefronts, jutting partly into the roadway and narrowing the space for the ego vehicle. A man ahead on the left edge walks away from the camera along the shoulder close to the travel lane. No moving vehicles are seen ahead in the same direction or oncoming. Cones, a motorcycle, and several bicycles are stationary along the left side, adding roadside clutter but not blocking the lane.", "hazard_reasoning": "There is a black van parked on the right side of the road. This vehicle occupies part of the travel lane and reduces available space and visibility, so the driver should manoeuvre carefully around it to avoid a collision."}
{"id": "train_03722", "split": "train", "clip_key": "titan_clip_318_000048_movie", "source": {"subset": "titan", "scenario": "clip_318", "frame": "000048"}, "frames": ["titan_clip_318_000048_movie_t-3.jpg", "titan_clip_318_000048_movie_t-2.jpg", "titan_clip_318_000048_movie_t-1.jpg", "titan_clip_318_000048_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the van merging ahead", "environment_perception": "An urban commercial street with one lane each way and no median appears narrow but smoothly paved, and traffic in the ego direction moves slowly in a short queue. A black van just ahead to the left cuts into the ego lane from the left side, merging because of congestion ahead and then setting the ego vehicle's pace. A white sedan farther ahead in the same lane creeps and briefly stops with the queue, keeping a small gap to the vehicle in front. Two pedestrians on the right sidewalk walk parallel to traffic near the curb without stepping into the road. Stone bollards and a parked bicycle line the right edge, slightly narrowing the usable margin.", "hazard_reasoning": "Black van ahead cutting-in from the left lane, due to traffic congestion ahead. The van may merge abruptly into your lane, so stay alert to avoid a collision."}
{"id": "train_03723", "split": "train", "clip_key": "2020-0206-101736_072668_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "072668"}, "frames": ["2020-0206-101736_072668_movie_t-3.jpg", "2020-0206-101736_072668_movie_t-2.jpg", "2020-0206-101736_072668_movie_t-1.jpg", "2020-0206-101736_072668_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with two same-direction lanes and a painted median runs past midrise buildings; the pavement is smooth and traffic is light to moderate with steady flow. Ahead in the ego lane, a gray truck accelerates and pulls away, briefly determining our speed. In the lane to the left, a white van slightly ahead continues straight at a constant pace, remaining parallel without merging. On the opposite side of the median, a few oncoming cars pass steadily to the right with no effect on the ego path.", "hazard_reasoning": "There is a gray truck accelerating in the ego lane. The truck's increasing speed may create a speed differential that could require you to adjust your driving; stay alert."}
{"id": "train_03724", "split": "train", "clip_key": "2020-0214-102601_047843_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "047843"}, "frames": ["2020-0214-102601_047843_movie_t-3.jpg", "2020-0214-102601_047843_movie_t-2.jpg", "2020-0214-102601_047843_movie_t-1.jpg", "2020-0214-102601_047843_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban roadway beneath an elevated expressway curves gently right, with a single lane for the ego vehicle bordered by a right-side guardrail and a raised median on the left; the pavement looks smooth and traffic moves at a moderate pace. A silver minivan ahead in the ego lane cruises and briefly eases speed, effectively setting the ego vehicle's pace. Farther ahead in the same lane, a blue truck proceeds steadily under the overpass, constraining the minivan and keeping the flow slow. On a parallel roadway to the right beyond the guardrail, several cars travel along independently without interacting with the ego lane. Overhead guide signs indicate directions toward expressway routes including the Chuo Expressway.", "hazard_reasoning": "No hazards present; the road is clear and traffic is steady, so the driver can maintain speed."}
{"id": "train_03725", "split": "train", "clip_key": "2020-0207-101955_027560_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "027560"}, "frames": ["2020-0207-101955_027560_movie_t-3.jpg", "2020-0207-101955_027560_movie_t-2.jpg", "2020-0207-101955_027560_movie_t-1.jpg", "2020-0207-101955_027560_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A busy urban two-way street with two lanes in the ego direction is separated from oncoming traffic by double white lines; the pavement is dry and smooth, and traffic is moderate but bunching ahead. A green covered truck directly ahead in the ego lane slows because congestion builds in front, setting the ego car's pace. A scooter slightly ahead near the left curb proceeds cautiously in the same direction and may edge into the ego lane. In the oncoming lanes to the right, a silver sedan followed by a white van approaches steadily, staying within their side and posing no immediate conflict.", "hazard_reasoning": "There is a green truck slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance due to the reduced speed of the truck and congestion ahead."}
{"id": "train_03726", "split": "train", "clip_key": "titan_clip_872_000186_movie", "source": {"subset": "titan", "scenario": "clip_872", "frame": "000186"}, "frames": ["titan_clip_872_000186_movie_t-3.jpg", "titan_clip_872_000186_movie_t-2.jpg", "titan_clip_872_000186_movie_t-1.jpg", "titan_clip_872_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street with no centerline runs between shops and offices; the pavement looks smooth and traffic is light with no moving vehicles near the ego car. Ahead on the left edge, a woman in a white shirt walks away from the camera in the roadway to get past a parked vehicle, briefly occupying part of the ego lane. On the right, a silver compact SUV is parked partly in the lane at the curb, narrowing the available space. Nearby on the right sidewalk, a man pushes a bicycle along the curb beside the parked car, staying close to the traffic.", "hazard_reasoning": "There is a woman wearing a white shirt and walking on the left side of the road, away from the ego-car, because of the parked vehicle. The driver should slow down because the pedestrian may step into the travel lane unexpectedly when maneuvering around the parked SUV."}
{"id": "train_03727", "split": "train", "clip_key": "2020-0205-103411_032164_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "032164"}, "frames": ["2020-0205-103411_032164_movie_t-3.jpg", "2020-0205-103411_032164_movie_t-2.jpg", "2020-0205-103411_032164_movie_t-1.jpg", "2020-0205-103411_032164_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth asphalt approaches a signalized intersection, with a dedicated right-turn lane and a red-paved bus lane on the right; traffic is heavy and compresses into a queue. A black van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. Another black van in the lane to the left is also stopped alongside, restricting space for a lane change. Farther ahead, a bus continues slowly in the right bus lane toward the junction, moving with the queue. No hazards or roadworks are evident.", "hazard_reasoning": "There is a black van stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead. You should stop to avoid a rear-end collision with the halted vehicle."}
{"id": "train_03728", "split": "train", "clip_key": "2020-0220-102630_017967_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "017967"}, "frames": ["2020-0220-102630_017967_movie_t-3.jpg", "2020-0220-102630_017967_movie_t-2.jpg", "2020-0220-102630_017967_movie_t-1.jpg", "2020-0220-102630_017967_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane arterial with two lanes in the ego direction runs between mid-rise buildings; the asphalt is smooth and traffic is heavy and largely stopped. A white sedan is stopped directly ahead in the ego lane because of congestion and it blocks the ego car's path. Farther ahead in the same lane a tall box truck remains stationary, anchoring the queue. In the adjacent right lane, a line of vans and cars, including a white delivery van alongside, is also halted, leaving no merging opportunity. A 50 km/h speed limit sign is visible on the left.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Therefore, the driver should stop to maintain a safe following distance and avoid a collision."}
{"id": "train_03729", "split": "train", "clip_key": "titan_clip_1357_000216_movie", "source": {"subset": "titan", "scenario": "clip_1357", "frame": "000216"}, "frames": ["titan_clip_1357_000216_movie_t-3.jpg", "titan_clip_1357_000216_movie_t-2.jpg", "titan_clip_1357_000216_movie_t-1.jpg", "titan_clip_1357_000216_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of crossing pedestrian", "environment_perception": "A narrow urban commercial street with a single undivided lane curves gently right between close buildings; sidewalks are raised and lined with bollards, the pavement is smooth, and traffic is very light with no vehicles in view. At the left curb near the ego path, a pedestrian carrying a handbag waits to cross to the right, potentially stepping into the lane as the bend approaches. On the right sidewalk ahead, a couple of pedestrians walk along the storefronts, remaining on the sidewalk and not constraining the vehicle's pace. Farther ahead near the bend on the left, small groups linger by shop fronts close to the curb and may edge toward the roadway. Sightlines shorten around the right-hand curve due to the buildings.", "hazard_reasoning": "A pedestrian carrying a handbag is waiting to cross the road from the left side to the right side. The pedestrian may step into the vehicle's path, so the driver should be aware to avoid a potential collision."}
{"id": "train_03730", "split": "train", "clip_key": "2020-0217-110854_024701_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "024701"}, "frames": ["2020-0217-110854_024701_movie_t-3.jpg", "2020-0217-110854_024701_movie_t-2.jpg", "2020-0217-110854_024701_movie_t-1.jpg", "2020-0217-110854_024701_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth asphalt and solid orange lane lines approaches a signalized intersection, and traffic is heavy and slow. Directly ahead in the ego lane a white-and-orange airport limousine bus is stopped because of congestion ahead, holding the ego vehicle. A silver van is alongside to the left in an adjacent same-direction lane, creeping forward past the bus and remaining close to the ego vehicle. Another white vehicle is visible to the bus's right in the next lane, also advancing slowly parallel to the queue. Overhead traffic lights and city signage mark the junction ahead.", "hazard_reasoning": "There is a white-and-orange bus stopped in the ego lane, because of traffic congestion ahead. The bus is stationary due to queued traffic, so you should stop to maintain a safe distance and avoid collision."}
{"id": "train_03731", "split": "train", "clip_key": "titan_clip_656_000360_movie", "source": {"subset": "titan", "scenario": "clip_656", "frame": "000360"}, "frames": ["titan_clip_656_000360_movie_t-3.jpg", "titan_clip_656_000360_movie_t-2.jpg", "titan_clip_656_000360_movie_t-1.jpg", "titan_clip_656_000360_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "A narrow urban street without a center line runs between office buildings; the pavement is smooth and traffic is light with no oncoming vehicles visible. Ahead slightly to the right, a gray truck is stopped with its rear open as it is being unloaded, partially blocking the carriageway and constraining the ego vehicle's pace. A pedestrian ahead crosses right to left in front of the truck, moving into the ego lane and occupying the path. At the truck's rear, another worker stands by the tailgate handling cargo close to the roadway.", "hazard_reasoning": "There is a gray truck parked on the right side of the road, because it is being unloaded. The open rear and surrounding cones create a partial obstruction in the lane, so the driver must navigate carefully to avoid a collision."}
{"id": "train_03732", "split": "train", "clip_key": "2020-0214-102601_049795_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "049795"}, "frames": ["2020-0214-102601_049795_movie_t-3.jpg", "2020-0214-102601_049795_movie_t-2.jpg", "2020-0214-102601_049795_movie_t-1.jpg", "2020-0214-102601_049795_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided roadway runs under an elevated expressway, with two lanes in the ego direction and a parallel same-direction roadway to the right behind a steel barrier; pavement is clean and traffic is light to moderate. The ego vehicle follows a black car directly ahead that continues at a steady speed through a gentle left bend, setting the pace. On the adjacent right-side roadway, several cars and a white van travel forward separated by the barrier and do not interact with the ego lane. Blue directional signs ahead indicate upcoming destinations, and chevrons mark a lane split or merge area.", "hazard_reasoning": "No caption available. There are no visible hazards or risk factors in this scenario, so the driver can maintain current speed and lane position safely."}
{"id": "train_03733", "split": "train", "clip_key": "2020-0226-140503_083328_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "083328"}, "frames": ["2020-0226-140503_083328_movie_t-3.jpg", "2020-0226-140503_083328_movie_t-2.jpg", "2020-0226-140503_083328_movie_t-1.jpg", "2020-0226-140503_083328_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane boulevard with traffic in both directions has smooth, dry pavement and heavy flow that is largely stopped in the ego's direction. Directly ahead in the ego lane, a white hatchback is stopped because of congestion ahead, holding the ego vehicle. In the adjacent left lane just ahead, a small flatbed truck is also stopped in the queue, limiting room to change lanes. Farther forward in the right lane, a silver van creeps ahead beside the queue. Oncoming vehicles continue along the far side of the roadway, and overhead gantries display lane guidance for straight and left movements.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane because of traffic congestion ahead. Drivers should stop to maintain safe following distance and avoid colliding with the halted vehicle."}
{"id": "train_03734", "split": "train", "clip_key": "titan_clip_1225_000426_movie", "source": {"subset": "titan", "scenario": "clip_1225", "frame": "000426"}, "frames": ["titan_clip_1225_000426_movie_t-3.jpg", "titan_clip_1225_000426_movie_t-2.jpg", "titan_clip_1225_000426_movie_t-1.jpg", "titan_clip_1225_000426_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "An urban shopping street with a narrow single-lane shared roadway runs between storefronts, lined by bollards and slightly damp from light rain; vehicular traffic is minimal while pedestrian activity is moderate. On the right edge near the bollards, a pedestrian wearing black pants and carrying an umbrella walks toward the ego car and could drift into the lane. Farther ahead in the lane, several pedestrians move away toward the bend, occupying the center and constraining the vehicle's pace. Near the right storefront, another person lingers close to the curb, walking slowly along the edge without entering the lane.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying an umbrella, walking on the right side of the road, toward the ego car. The pedestrian may step into the roadway unexpectedly, so the driver should be cautious to avoid a collision."}
{"id": "train_03735", "split": "train", "clip_key": "2020-0212-102546_073168_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "073168"}, "frames": ["2020-0212-102546_073168_movie_t-3.jpg", "2020-0212-102546_073168_movie_t-2.jpg", "2020-0212-102546_073168_movie_t-1.jpg", "2020-0212-102546_073168_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection, the pavement dry and in good condition, with heavy, slow-moving traffic. A yellow cement mixer is directly ahead in the ego lane and slows as congestion builds ahead, setting the ego vehicle's pace. To the right, a black minivan and a box truck in the adjacent lanes creep forward parallel to the ego path, limiting space for a lane change. On the left sidewalk, a pedestrian waits near the crosswalk without stepping into the roadway.", "hazard_reasoning": "There is a yellow cement mixer slowing in the ego lane because of traffic congestion ahead on the road. The reduced speed of the mixer signals congestion ahead, so the driver should slow down to maintain safe spacing and avoid a collision."}
{"id": "train_03736", "split": "train", "clip_key": "titan_clip_1368_000276_movie", "source": {"subset": "titan", "scenario": "clip_1368", "frame": "000276"}, "frames": ["titan_clip_1368_000276_movie_t-3.jpg", "titan_clip_1368_000276_movie_t-2.jpg", "titan_clip_1368_000276_movie_t-1.jpg", "titan_clip_1368_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian", "environment_perception": "An urban two-way local street with single narrow lanes and no median stretches ahead, bordered by offices on the left and a walled sidewalk with railings on the right; the pavement is smooth and traffic is light with no vehicles visible. On the left sidewalk near the ego vehicle, two pedestrians walk toward the camera along the curb, remaining off the roadway and posing little interaction. Farther ahead on the left side of the road, a pedestrian in a white shirt and gray pants carries a briefcase and walks away from the ego car along the edge, potentially approaching the travel path at a driveway gap. On the right sidewalk ahead, another person walks in the same direction as the ego vehicle, separated by the railings.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and gray pants, carrying a briefcase, and walking away from the ego car, on the left side of the road. Therefore, the driver should be aware of the pedestrian to anticipate any potential crossing movement."}
{"id": "train_03737", "split": "train", "clip_key": "titan_clip_380_000120_movie", "source": {"subset": "titan", "scenario": "clip_380", "frame": "000120"}, "frames": ["titan_clip_380_000120_movie_t-3.jpg", "titan_clip_380_000120_movie_t-2.jpg", "titan_clip_380_000120_movie_t-1.jpg", "titan_clip_380_000120_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian in lane", "environment_perception": "An urban side street with a single narrow two-way lane paved with interlocking bricks has no center divider and storefronts close to the curb. Traffic is light and slow, shaped mainly by pedestrians in the roadway. Ahead in the ego lane, a male pedestrian in a white shirt carrying a bag walks away from the car along the center, constraining the ego vehicle's pace. Farther ahead by the left curb, a white van is stopped while two people stand beside it, slightly narrowing the lane. At the right edge near the shops, another pedestrian lingers at the curb and steps toward the lane, potentially entering the ego path. A no-parking sign is posted on a pole to the left.", "hazard_reasoning": "There is a male pedestrian, wearing a white shirt, and carrying a bag, walking in front of, and away from the ego-car, in the ego lane. The pedestrian is moving directly ahead in the vehicle's lane, so the driver should be cautious and be prepared to slow down to avoid a collision."}
{"id": "train_03738", "split": "train", "clip_key": "titan_clip_554_000318_movie", "source": {"subset": "titan", "scenario": "clip_554", "frame": "000318"}, "frames": ["titan_clip_554_000318_movie_t-3.jpg", "titan_clip_554_000318_movie_t-2.jpg", "titan_clip_554_000318_movie_t-1.jpg", "titan_clip_554_000318_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban street with smooth pavement curves right, forming a single left-hand lane without a median, and traffic is light. A black van ahead in the ego lane proceeds toward the rightward bend and slows slightly, setting the pace. A pedestrian wearing a black cap and a red T-shirt crosses from the left side to the right in front of the ego car, briefly entering the lane and becoming the primary conflict. Two other pedestrians walk along the left sidewalk behind a low fence and remain off the roadway. No salient signals are visible, and sun glare appears ahead.", "hazard_reasoning": "There is a pedestrian wearing a black cap with a red t-shirt crossing the street from the left side to the right side in front of the ego car. The driver must stop to avoid a collision with the pedestrian crossing directly ahead."}
{"id": "train_03739", "split": "train", "clip_key": "2020-0129-105040_000267_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "000267"}, "frames": ["2020-0129-105040_000267_movie_t-3.jpg", "2020-0129-105040_000267_movie_t-2.jpg", "2020-0129-105040_000267_movie_t-1.jpg", "2020-0129-105040_000267_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and smooth asphalt carries light traffic. The ego vehicle proceeds in the left lane as shadows cross the pavement. Ahead to the right, a large green-and-white truck occupies the curb lane near the sidewalk without encroaching on the ego lane. Across the road on the far-side sidewalk, two pedestrians walk leftward and another walks rightward behind a guard fence, not attempting to cross. A dark car appears at the left edge in the adjacent lane and continues ahead without affecting the ego path. Overhead traffic signals are visible, and a blue P parking sign stands on the far side.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03740", "split": "train", "clip_key": "2020-0204-150838_076343_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "076343"}, "frames": ["2020-0204-150838_076343_movie_t-3.jpg", "2020-0204-150838_076343_movie_t-2.jpg", "2020-0204-150838_076343_movie_t-1.jpg", "2020-0204-150838_076343_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway with two same-direction lanes is bordered by concrete barriers and a right-side guardrail, the pavement is smooth and traffic is moderate. A green tarp-covered truck directly ahead in the ego lane slows, constraining the ego car's pace. A white box truck travels ahead in the left lane at a similar speed, occupying the adjacent lane and limiting room to pass. A black minivan is alongside in the left lane, overtaking the ego vehicle. Red barricades line the right shoulder, and a blue sign on the right indicates a route split 250 m ahead.", "hazard_reasoning": "There is a green truck slowing in the ego lane, in front of the ego car. Slow down to maintain a safe following distance from the decelerating truck."}
{"id": "train_03741", "split": "train", "clip_key": "titan_clip_1114_000036_movie", "source": {"subset": "titan", "scenario": "clip_1114", "frame": "000036"}, "frames": ["titan_clip_1114_000036_movie_t-3.jpg", "titan_clip_1114_000036_movie_t-2.jpg", "titan_clip_1114_000036_movie_t-1.jpg", "titan_clip_1114_000036_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial street with a narrow single lane and brick pavement runs between shops, with no median, light vehicle flow, and many pedestrians; the ego car proceeds slowly along the left side. A pedestrian in a gray shirt and black pants walks away from the ego vehicle in the middle of the road ahead, occupying the path and keeping speed low. Farther ahead, a small white kei truck in the same direction creeps near the center and intermittently pauses, further constraining progress. On the left edge just ahead, a woman with a red backpack walks along the roadway and edges toward the lane, which may bring her into the path. Bicycles and other items line the right curb, slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black pants, walking in the middle of the road, away from the ego car. The pedestrian is crossing in front of the vehicle's path, requiring the driver to manoeuvre carefully around them to maintain safety."}
{"id": "train_03742", "split": "train", "clip_key": "2020-0210-101957_007876_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "007876"}, "frames": ["2020-0210-101957_007876_movie_t-3.jpg", "2020-0210-101957_007876_movie_t-2.jpg", "2020-0210-101957_007876_movie_t-1.jpg", "2020-0210-101957_007876_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each direction runs straight, divided by a solid yellow centerline; the pavement is dry and traffic is moderate, slowing near a bus stop. Ahead in the ego lane, a green sedan slows because a bus is merging into the lane, constraining the ego car's pace. At the left curb a white bus pulls out from a stop toward the ego lane, gradually edging in as vehicles yield. In the oncoming lane to the right, several cars pass steadily, limiting any chance to go around. A no-U-turn sign is posted on the left sidewalk near the storefronts.", "hazard_reasoning": "There is a green sedan slowing down in front of the ego car in the ego lane because a bus is merging into the lane. Drivers should slow down to maintain a safe distance as the bus merges and avoid a potential collision."}
{"id": "train_03743", "split": "train", "clip_key": "2020-0220-151845_040156_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "040156"}, "frames": ["2020-0220-151845_040156_movie_t-3.jpg", "2020-0220-151845_040156_movie_t-2.jpg", "2020-0220-151845_040156_movie_t-1.jpg", "2020-0220-151845_040156_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated roadway with two same-direction lanes runs under an expressway, bounded by concrete walls; the pavement is smooth and traffic is moderate, slowing slightly. A pink truck directly ahead in the ego lane slows because congestion forms ahead, and it dictates the ego car's speed. A black sedan in the right lane draws up alongside and then continues forward, effectively overtaking without merging. Farther ahead, several vehicles in both lanes bunch under the viaduct and move slowly. The concrete barriers and frequent support columns reduce lateral clearance and partially obscure the view ahead.", "hazard_reasoning": "There's a pink truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The truck's speed reduction due to congestion indicates a potential slowdown in traffic, so the driver should slow down to maintain a safe following distance."}
{"id": "train_03744", "split": "train", "clip_key": "2020-0226-140503_101815_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "101815"}, "frames": ["2020-0226-140503_101815_movie_t-3.jpg", "2020-0226-140503_101815_movie_t-2.jpg", "2020-0226-140503_101815_movie_t-1.jpg", "2020-0226-140503_101815_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the slowing van ahead.", "environment_perception": "An urban multi-lane arterial with painted lane arrows and no physical median stretches toward a signalized intersection on smooth dry pavement, with moderate traffic. A box truck proceeds ahead in the center lane toward the junction, pacing the ego vehicle. On the far left ahead, a white van slows in the left lane to turn into a side street, as it prepares to move onto a different road. From the right, a white car enters the intersection toward our roadway and looks set to merge into the same direction. On the left sidewalk near the crosswalk, a cyclist waits by the railing without entering the roadway.", "hazard_reasoning": "There is a white van slowing on the left side of the road, in the left lane, because they are turning onto a different road. The driver should be aware of the van's deceleration and potential lane change to prepare for reduced speed or adjust their path accordingly."}
{"id": "train_03745", "split": "train", "clip_key": "2020-0127-132751_044929_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "044929"}, "frames": ["2020-0127-132751_044929_movie_t-3.jpg", "2020-0127-132751_044929_movie_t-2.jpg", "2020-0127-132751_044929_movie_t-1.jpg", "2020-0127-132751_044929_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of the van's possible lane change.", "environment_perception": "An urban arterial with two lanes in the ego direction runs beside a metal median rail that separates oncoming traffic; the pavement is smooth and traffic is moderate, moving steadily. On the left of the ego vehicle, a white van in the left lane travels alongside and slightly ahead, limiting space to merge left. Ahead in the right lane, a white sedan proceeds at a steady speed, loosely pacing the ego vehicle. Farther ahead near the lane line between the two same-direction lanes, a motorcyclist accelerates forward and may enter the ego lane.", "hazard_reasoning": "There is a white van driving alongside the ego car, in the left lane. The van may change lanes or obstruct your path, so stay alert for sudden movements."}
{"id": "train_03746", "split": "train", "clip_key": "2020-0227-104226_020760_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "020760"}, "frames": ["2020-0227-104226_020760_movie_t-3.jpg", "2020-0227-104226_020760_movie_t-2.jpg", "2020-0227-104226_020760_movie_t-1.jpg", "2020-0227-104226_020760_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban scene under an elevated roadway shows a two-lane same-direction road with a right-side guardrail and left-side storefronts; pavement is smooth and traffic is heavy with stop-and-go movement. A white van directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle with its brake lamps lit. A dark minivan slightly ahead in the left lane inches forward beside the queue, limiting any merge opportunity. Farther ahead, a small white car in the same lane creeps forward behind the van, maintaining the jam.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The van's stop indicates impending stationary traffic at the red signal, so the driver must stop to avoid collision and obey traffic rules."}
{"id": "train_03747", "split": "train", "clip_key": "titan_clip_385_000204_movie", "source": {"subset": "titan", "scenario": "clip_385", "frame": "000204"}, "frames": ["titan_clip_385_000204_movie_t-3.jpg", "titan_clip_385_000204_movie_t-2.jpg", "titan_clip_385_000204_movie_t-1.jpg", "titan_clip_385_000204_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way lane curves right, with no median, smooth pavement, and light traffic. Ahead on the left curb a black sedan is stopped, slightly encroaching into the travel lane and narrowing the path. At the zebra crossing in front, pedestrians from the left step into the roadway and walk right across the ego lane, directly occupying the vehicle's path. Farther ahead near the bend, an oncoming white van approaches in the opposite lane, creating potential conflict space with the narrowed section.", "hazard_reasoning": "There is a black sedan stopped on the left side of the road. The vehicle's unexpected stop could require evasive maneuvers, so the driver should slow down to maintain control and avoid collision."}
{"id": "train_03748", "split": "train", "clip_key": "titan_clip_1243_000036_movie", "source": {"subset": "titan", "scenario": "clip_1243", "frame": "000036"}, "frames": ["titan_clip_1243_000036_movie_t-3.jpg", "titan_clip_1243_000036_movie_t-2.jpg", "titan_clip_1243_000036_movie_t-1.jpg", "titan_clip_1243_000036_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian crossing ahead", "environment_perception": "An urban residential intersection features narrow two-way streets with zebra crossings, no center line or median, smooth pavement, and light traffic. A pedestrian wearing a black shirt and carrying an umbrella steps from the right-hand crosswalk and walks toward the ego vehicle, which may constrain its pace. On the left corner, a person with a bicycle waits at the curb near the crosswalk and may move into the intersection. Far ahead in the same direction, a small white van proceeds away along the street without affecting the ego vehicle. A temporary construction sign stands on the right shoulder by the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying an umbrella, crossing the street on the right side of the intersection, towards the ego car. The pedestrian may enter the vehicle's path unexpectedly, so the driver should be aware and prepare to yield."}
{"id": "train_03749", "split": "train", "clip_key": "2020-0205-152530_060471_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "060471"}, "frames": ["2020-0205-152530_060471_movie_t-3.jpg", "2020-0205-152530_060471_movie_t-2.jpg", "2020-0205-152530_060471_movie_t-1.jpg", "2020-0205-152530_060471_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of truck lane change", "environment_perception": "An urban multilane road runs under an elevated expressway with two same-direction lanes and a separated right lane marked by flexible posts; the pavement is smooth and traffic is light and steady. A gray truck travels ahead near the ego lane and is moving rightward into the separated right lane, while a white van proceeds slightly ahead in the adjacent separated lane and continues straight. At a warehouse entrance on the left, several small trucks are stopped inside the driveway, with one facing out but waiting behind the railing and not entering the roadway. Blue directional signs are visible ahead and no active signals appear.", "hazard_reasoning": "There is a gray truck in the right lane, changing lanes from the ego lane to the right lane. Because the truck is merging into your lane, you should remain vigilant to its movement and prepare to adjust speed accordingly."}
{"id": "train_03750", "split": "train", "clip_key": "titan_clip_795_000180_movie", "source": {"subset": "titan", "scenario": "clip_795", "frame": "000180"}, "frames": ["titan_clip_795_000180_movie_t-3.jpg", "titan_clip_795_000180_movie_t-2.jpg", "titan_clip_795_000180_movie_t-1.jpg", "titan_clip_795_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban residential street with a very narrow two-way carriageway lacks a centerline, the asphalt looks intact, and traffic is light with no moving vehicles. Far ahead on the left at the intersection, a man wearing a reflective uniform and helmet stands by the curb as the ego vehicle approaches, positioned close to the path through the junction. No other road users appear in the ego lane or oncoming side. A large ??? slow marking is painted on the pavement, and no traffic signals are visible at the junction. Buildings and fences confine the roadway, and a covered parked motorcycle sits along the left edge without encroaching into the lane.", "hazard_reasoning": "There is a man wearing a reflective uniform and a helmet and standing on the left side of the intersection. Be aware of the pedestrian as they may step into the vehicle's path unexpectedly."}
{"id": "train_03751", "split": "train", "clip_key": "titan_clip_390_000408_movie", "source": {"subset": "titan", "scenario": "clip_390", "frame": "000408"}, "frames": ["titan_clip_390_000408_movie_t-3.jpg", "titan_clip_390_000408_movie_t-2.jpg", "titan_clip_390_000408_movie_t-1.jpg", "titan_clip_390_000408_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist", "environment_perception": "A narrow urban shopping street with a single shared lane has no centerline or median, and the dry brick pavement looks well kept; traffic is light and slow. Ahead on the left, a cyclist wearing a white shirt and black pants rides away from the ego vehicle along the lane and effectively sets the pace. On the right edge, a pedestrian walks toward the camera along the walkway, staying clear of the roadway. Farther ahead, several pedestrians move along the sidewalks and drift near the center of the street, potentially entering the vehicle's path.", "hazard_reasoning": "There is a cyclist wearing a white shirt and black pants, and cycling on the left side of the road away from the ego car. The cyclist's position close to the lane edge could lead to unexpected movements; the driver should be aware to anticipate possible deviations."}
{"id": "train_03752", "split": "train", "clip_key": "2020-0226-140503_015633_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "015633"}, "frames": ["2020-0226-140503_015633_movie_t-3.jpg", "2020-0226-140503_015633_movie_t-2.jpg", "2020-0226-140503_015633_movie_t-1.jpg", "2020-0226-140503_015633_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban street with mid-rise apartments lines a two-way road with one lane per direction separated by double white lines; the wet pavement looks clean and traffic is light. A white box truck ahead in the ego lane slows near the left curb in front of the ego car, constraining the ego vehicle's pace. Several cars approach in the opposite lane to the right at steady speed, limiting any chance to pass the truck. On the left sidewalk, a pedestrian near a building entrance moves slowly beside the truck but stays off the roadway. No traffic signals are visible and no unusual obstacles appear.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The slowing truck ahead reduces your available reaction time; slow down to maintain a safe following distance."}
{"id": "train_03753", "split": "train", "clip_key": "2020-0131-103016_039869_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "039869"}, "frames": ["2020-0131-103016_039869_movie_t-3.jpg", "2020-0131-103016_039869_movie_t-2.jpg", "2020-0131-103016_039869_movie_t-1.jpg", "2020-0131-103016_039869_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the black SUV cutting in", "environment_perception": "An urban multi-lane signalized intersection with smooth asphalt and no median is shown, and traffic is light. Ahead and slightly right, a black SUV drives through the junction into the left-hand lane of the street the ego-car is turning onto while making a right turn, occupying the space just ahead and setting the entry gap. On the far left approach, a small white van moves straight across from left to right and clears the area without entering the ego lane. Far across to the left, a white sedan waits near the curb and remains stationary.", "hazard_reasoning": "There is a black SUV driving through the intersection, into the left hand-lane, ahead of the ego-car, which is making a right hand turn at the intersection. This unexpected cut-in by the SUV could intersect with the ego-vehicle's turning path, requiring the driver to be aware."}
{"id": "train_03754", "split": "train", "clip_key": "2020-0204-150838_034441_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_034441_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_034441_movie_t-3_augB1.jpg", "2020-0204-150838_034441_movie_t-2_augB1.jpg", "2020-0204-150838_034441_movie_t-1_augB1.jpg", "2020-0204-150838_034441_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with opposing flows and no physical median appears clean and level, and traffic is moderate to heavy and slow near a signalized intersection with zebra crossings. A white van directly ahead in the ego lane slows with brake lights on because of congestion ahead, pacing the ego vehicle. A black van slightly ahead in the lane to the left also moves slowly, reducing opportunities to change lanes. On the right side of the roadway, an oncoming silver van proceeds through the intersection in its lane and passes by without conflict. Overhead traffic signals and roadside signs are visible but their aspects are not clearly readable.", "hazard_reasoning": "There is a white van slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed in the congested traffic."}
{"id": "train_03755", "split": "train", "clip_key": "2020-0204-150838_034897_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "034897"}, "frames": ["2020-0204-150838_034897_movie_t-3.jpg", "2020-0204-150838_034897_movie_t-2.jpg", "2020-0204-150838_034897_movie_t-1.jpg", "2020-0204-150838_034897_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial approaches a signalized intersection with smooth pavement, clear markings, and no physical median; traffic is moderate and moves steadily through the junction. A white van directly ahead in the ego lane proceeds through the intersection on a green light and sets the ego vehicle's pace. In the lane to the left, a dark van continues straight slightly ahead, traveling parallel without changing lanes. On the right side of the roadway, several cars travel toward the camera as oncoming traffic, separated by painted center markings. Pedestrians are visible on both sidewalks near the corners but remain off the crosswalks.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane, because of the green traffic light. Following the vehicle ahead helps maintain safe distance and respond quickly if the light changes."}
{"id": "train_03756", "split": "train", "clip_key": "titan_clip_575_000090_movie", "source": {"subset": "titan", "scenario": "clip_575", "frame": "000090"}, "frames": ["titan_clip_575_000090_movie_t-3.jpg", "titan_clip_575_000090_movie_t-2.jpg", "titan_clip_575_000090_movie_t-1.jpg", "titan_clip_575_000090_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane in each direction approaches a small intersection marked by wide zebra crosswalks, with smooth pavement and light traffic. A white van ahead in the ego lane continues away toward the next block, loosely governing the ego vehicle's pace. On the right, a group of pedestrians walks along the sidewalk at the corner beside the crosswalk, remaining on the footpath but close to the curb. No oncoming vehicles are near in the opposite lane. An overhead signal structure is visible at the intersection, though the signal aspect is not discernible.", "hazard_reasoning": "No hazards are detected; the ego-lane is clear, the traffic signal is green, and there are no obstacles or vehicles posing a risk."}
{"id": "train_03757", "split": "train", "clip_key": "2020-0207-101955_089059_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "089059"}, "frames": ["2020-0207-101955_089059_movie_t-3.jpg", "2020-0207-101955_089059_movie_t-2.jpg", "2020-0207-101955_089059_movie_t-1.jpg", "2020-0207-101955_089059_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with three same-direction lanes runs across a bridge, bounded by guardrails and an adjacent viaduct on the right; pavement is smooth and traffic is light with steady flow. A white box truck ahead in the ego lane cruises straight at a constant pace, occupying the lane the ego vehicle follows. A motorcycle is farther ahead in the left lane, continuing straight and staying clear of the ego path. A dark car travels in the right lane farther ahead, maintaining its lane and spacing. A circular roadside sign on a pole to the right shows a 50 speed limit.", "hazard_reasoning": "No caption available; no potential hazards identified, so no immediate warning is required."}
{"id": "train_03758", "split": "train", "clip_key": "titan_clip_274_000252_movie", "source": {"subset": "titan", "scenario": "clip_274", "frame": "000252"}, "frames": ["titan_clip_274_000252_movie_t-3.jpg", "titan_clip_274_000252_movie_t-2.jpg", "titan_clip_274_000252_movie_t-1.jpg", "titan_clip_274_000252_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van", "environment_perception": "A narrow urban neighborhood street with closely spaced buildings forms a two-way road without a centerline or median, the pavement is smooth, and traffic is very light. The camera car proceeds along the left side past curbside utilities and storefronts. Ahead on the left, a white van is parked at the curb while being loaded, projecting slightly into the travel way and constraining the ego vehicle's available width. No moving same-direction or oncoming vehicles are visible. A blue circular no-parking sign stands on the left. Parked bicycles and cars in bays on the right remain off the roadway.", "hazard_reasoning": "There is a white van parked on the left side of the road, because it is being loaded. The van and loading activity may encroach into the lane and pose a collision risk, so the driver should maneuver carefully around it."}
{"id": "train_03759", "split": "train", "clip_key": "2020-0214-145407_026428_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "026428"}, "frames": ["2020-0214-145407_026428_movie_t-3.jpg", "2020-0214-145407_026428_movie_t-2.jpg", "2020-0214-145407_026428_movie_t-1.jpg", "2020-0214-145407_026428_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs through a high-rise district, with two same-direction lanes and a grassy median on the right separating oncoming traffic; the pavement is smooth and the flow is heavy and largely stopped. Directly ahead in the ego lane, a white minivan is stopped and keeps waiting because congestion blocks the road ahead. In the adjacent left lane, a black taxi beside the ego car and a yellow truck farther forward remain queued with little movement, constraining overall pace. Farther ahead left, several box trucks inch forward within the jam without merging toward the ego lane.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_03760", "split": "train", "clip_key": "2020-0131-103016_058527_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "058527"}, "frames": ["2020-0131-103016_058527_movie_t-3.jpg", "2020-0131-103016_058527_movie_t-2.jpg", "2020-0131-103016_058527_movie_t-1.jpg", "2020-0131-103016_058527_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the slowing vehicle ahead", "environment_perception": "An urban arterial with two same-direction lanes and metal railings along the left sidewalk has smooth pavement and heavy, slow traffic. A black SUV directly ahead in the ego lane slows with the queue, limiting the ego car's pace because of traffic ahead. To the right, a white van runs alongside in the adjacent lane and creeps forward at a similar speed, staying close to the ego vehicle. Farther ahead in the right lane, a dark minivan inches along, preventing easy overtaking. A signalized intersection is visible in the distance, and the line of vehicles appears to extend toward it.", "hazard_reasoning": "There is a black SUV, slowing in the ego lane, in front of the ego-car, because of the traffic ahead. The black SUV's reduced speed signals congested traffic ahead, so the driver should yield to maintain safe following distance."}
{"id": "train_03761", "split": "train", "clip_key": "2020-0228-102841_069008_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "069008"}, "frames": ["2020-0228-102841_069008_movie_t-3.jpg", "2020-0228-102841_069008_movie_t-2.jpg", "2020-0228-102841_069008_movie_t-1.jpg", "2020-0228-102841_069008_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision", "environment_perception": "An urban scene on a narrow two-way local street without a centerline shows dry pavement and light traffic, with buildings tight to the roadway and railings; parked vehicles line both sides and cones narrow the left edge. Two men with backpacks cross ahead from right to left midblock where there is no crosswalk, moving through the ego lane and forcing a yield. A pedestrian waits on the right sidewalk near the curb by a convenience store, close to the crossing path and potentially stepping out. A white van stands ahead along the left verge while other parked cars further restrict the lane.", "hazard_reasoning": "There are two men carrying backpacks, crossing the road in front of the ego car, because there's no crosswalk. The driver should slow down to avoid a collision with pedestrians crossing unexpectedly."}
{"id": "train_03762", "split": "train", "clip_key": "2020-0131-135401_016535_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "016535"}, "frames": ["2020-0131-135401_016535_movie_t-3.jpg", "2020-0131-135401_016535_movie_t-2.jpg", "2020-0131-135401_016535_movie_t-1.jpg", "2020-0131-135401_016535_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with one same-direction lane runs past mid-rise buildings, bordered by a concrete barrier on the right and a blue-painted curb lane on the left; the pavement is dry and traffic is light. A black van ahead in the ego lane accelerates away through a green signal, increasing the gap. A small truck is stopped at the left curb near a crosswalk, possibly waiting to merge but remaining outside the lane. Other vehicles along the left curb appear parked and static.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car, because of a green traffic light. The green signal indicates vehicles ahead are moving through the intersection; following the van helps maintain safe distance and avoids abrupt stopping under changing lights."}
{"id": "train_03763", "split": "train", "clip_key": "2020-0131-135401_008899_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-135401_008899_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-135401_008899_movie_t-3_augB1.jpg", "2020-0131-135401_008899_movie_t-2_augB1.jpg", "2020-0131-135401_008899_movie_t-1_augB1.jpg", "2020-0131-135401_008899_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with narrow lanes runs between midrise buildings, with temporary work?one barriers and machinery narrowing the right side; pavement looks intact and traffic is moderate and slow. A white box truck ahead in the ego lane decelerates as it approaches a short queue, constraining the ego vehicle's pace as described. A small car approaches in the oncoming lane past the work area, continuing steadily without encroaching into the ego lane. Several pedestrians walk along the left sidewalk near the curb, moving parallel to traffic and remaining clear of the roadway. The roadside construction zone on the right includes a parked dump truck and cones that squeeze the lane and add visual clutter.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid collision in the congested traffic ahead."}
{"id": "train_03764", "split": "train", "clip_key": "2020-0228-150133_057361_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "057361"}, "frames": ["2020-0228-150133_057361_movie_t-3.jpg", "2020-0228-150133_057361_movie_t-2.jpg", "2020-0228-150133_057361_movie_t-1.jpg", "2020-0228-150133_057361_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth asphalt and curbside guardrails carries heavy, stopped traffic near a signalized intersection. The ego vehicle queues in a through lane. A gray sedan immediately ahead in the ego lane is stopped because of congestion ahead, holding our position. In the adjacent left lane, a white kei car inches forward alongside and slightly ahead, and may enter our lane. Farther ahead in the center lane, a city bus waits with the queue, constraining overall flow. Overhead traffic lights show red, and vehicles remain stationary.", "hazard_reasoning": "There is a gray sedan stopped in the ego lane, because of traffic congestion ahead. You should stop to avoid a collision with the halted vehicle and maintain a safe following distance."}
{"id": "train_03765", "split": "train", "clip_key": "2020-0210-155354_035983_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "035983"}, "frames": ["2020-0210-155354_035983_movie_t-3.jpg", "2020-0210-155354_035983_movie_t-2.jpg", "2020-0210-155354_035983_movie_t-1.jpg", "2020-0210-155354_035983_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the hatchback at the red light.", "environment_perception": "An urban multilane arterial with three same-direction lanes carries heavy, slow traffic on smooth asphalt, with buildings close by and overhead destination signs as vehicles queue toward a signalized intersection. A black hatchback directly ahead in the ego lane remains stopped for the red light, blocking the ego car's path. A delivery scooter just ahead between the center and right lanes filters forward and may merge into the ego lane as space opens. In the left-adjacent lane, a white van slightly ahead is also stopped in the queue, matching the pace and limiting lane changes. No unusual obstacles or work zones are visible.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver must stop to avoid a collision with the halted vehicle at the red light."}
{"id": "train_03766", "split": "train", "clip_key": "2020-0205-152530_062177_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "062177"}, "frames": ["2020-0205-152530_062177_movie_t-3.jpg", "2020-0205-152530_062177_movie_t-2.jpg", "2020-0205-152530_062177_movie_t-1.jpg", "2020-0205-152530_062177_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two same-direction lanes runs between a high-rise area and a wooded embankment, bordered by guardrails and streetlights; the pavement is dry and smooth, and traffic moves at a steady moderate pace with no oncoming lanes visible. In the left lane ahead, a silver hatchback cruises behind a large box truck, keeping close and leaving little room to merge. The box truck in that left lane holds a constant speed and effectively slows that lane. Farther ahead in the right lane, another box truck proceeds straight in our path and governs the ego-vehicle's pace. A blue pedestrian-crossing warning sign stands on the left verge, and an overhead gantry appears in the distance.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03767", "split": "train", "clip_key": "titan_clip_1193_000594_movie", "source": {"subset": "titan", "scenario": "clip_1193", "frame": "000594"}, "frames": ["titan_clip_1193_000594_movie_t-3.jpg", "titan_clip_1193_000594_movie_t-2.jpg", "titan_clip_1193_000594_movie_t-1.jpg", "titan_clip_1193_000594_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "A narrow urban back street runs between tall buildings, effectively a single lane with no divider and smooth pavement; traffic is very light with no moving vehicles. On the right edge near the ego vehicle, a man walks toward it along the curb and edges slightly into the lane, making him relevant to the ego path. Farther ahead near the center-left, another pedestrian walks away down the lane and may constrain the vehicle's pace. Red traffic cones are on the left side in front of the ego car, lining a low curb and narrowing the roadway; additional green cones and a parked bicycle sit on the right, with more cones and a small barrier visible farther ahead.", "hazard_reasoning": "There is a red traffic cone on the left side of the road, in front of the ego car. The driver should manoeuvre carefully around it because the cone partially obstructs the travel lane and could cause a collision if struck."}
{"id": "train_03768", "split": "train", "clip_key": "2020-0213-143552_077947_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "077947"}, "frames": ["2020-0213-143552_077947_movie_t-3.jpg", "2020-0213-143552_077947_movie_t-2.jpg", "2020-0213-143552_077947_movie_t-1.jpg", "2020-0213-143552_077947_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway-style corridor with high sound walls and concrete barriers confines a single left-hand lane, the pavement smooth as the road curves gently right and passes beneath an overpass; traffic is light. A black truck ahead in the ego lane drives away from the camera and effectively sets the pace. In the separated carriageway to the right, a white van and another car travel in the same direction slightly ahead, remaining isolated by the barrier and not affecting the ego vehicle. No traffic signals or unusual signage are apparent, and no hazards or pedestrians appear.", "hazard_reasoning": "There is a black truck driving in the ego lane, away from the ego car. The vehicle ahead may brake suddenly or change speed, so you should follow the vehicle ahead at a safe distance to avoid collision."}
{"id": "train_03769", "split": "train", "clip_key": "2020-0127-132751_082557_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "082557"}, "frames": ["2020-0127-132751_082557_movie_t-3.jpg", "2020-0127-132751_082557_movie_t-2.jpg", "2020-0127-132751_082557_movie_t-1.jpg", "2020-0127-132751_082557_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes runs on smooth asphalt, separated by a low concrete median, and traffic appears moderate and steady. A green canvas-covered truck is directly ahead in the ego lane and slows because the vehicle in front of it slows, constraining the ego car's pace. A large silver box truck travels alongside in the left curb lane, continuing straight and limiting room to merge left. Oncoming vehicles, including a white minivan, pass on the far side of the median and stay separated from the ego lane.", "hazard_reasoning": "There is a green truck slowing down in front of the ego car, in the ego lane, because the vehicle ahead is slowing down. The driver should reduce speed to maintain a safe following distance and avoid a collision."}
{"id": "train_03770", "split": "train", "clip_key": "titan_clip_339_000504_movie", "source": {"subset": "titan", "scenario": "clip_339", "frame": "000504"}, "frames": ["titan_clip_339_000504_movie_t-3.jpg", "titan_clip_339_000504_movie_t-2.jpg", "titan_clip_339_000504_movie_t-1.jpg", "titan_clip_339_000504_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the stopped van", "environment_perception": "A narrow urban commercial street with block-paved surface and no marked lanes or median is shown, with light traffic and slow travel as the car proceeds straight between close storefronts. Ahead on the right side of the ego lane, a black van is stopped along the left curb, encroaching into the roadway and narrowing the available space for the ego vehicle to pass. Near this van at a left-side shop entrance, a person stands still at the threshold close to the curb, adjacent to the ego path. Farther ahead on the right sidewalk, a pedestrian walks away from the camera, remaining on the footway and not affecting the lane.", "hazard_reasoning": "There is a black van stopped on the left side of the road. The driver should manoeuvre carefully around the stopped van to avoid colliding with it or forcing an abrupt lane change."}
{"id": "train_03771", "split": "train", "clip_key": "2020-0131-135401_010750_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "010750"}, "frames": ["2020-0131-135401_010750_movie_t-3.jpg", "2020-0131-135401_010750_movie_t-2.jpg", "2020-0131-135401_010750_movie_t-1.jpg", "2020-0131-135401_010750_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid yellow centerline runs between closely spaced buildings; the asphalt is smooth and traffic is slow near an upcoming intersection. A white box truck directly ahead in the ego lane slows because of congestion further ahead, constraining the ego vehicle's speed. An oncoming black minivan is stopped at the right curb near the centerline, facing the ego vehicle but remaining in its lane. A small set of traffic signals is visible at the junction ahead, and a no-parking sign stands on the left.", "hazard_reasoning": "There is a white truck slowing down in front of the ego-car, because of traffic congestion ahead. Slow down to adapt to reduced speed and maintain a safe following distance."}
{"id": "train_03772", "split": "train", "clip_key": "2020-0207-101955_079578_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "079578"}, "frames": ["2020-0207-101955_079578_movie_t-3.jpg", "2020-0207-101955_079578_movie_t-2.jpg", "2020-0207-101955_079578_movie_t-1.jpg", "2020-0207-101955_079578_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An elevated urban road with two lanes in the same direction, bounded by guardrails, has clean pavement and light traffic. A blue flatbed truck directly ahead in the ego lane slows, constrained by a white box truck farther ahead that is also slowing, which in turn limits the ego car's pace. An overhead blue guide sign shows upcoming route options about 250 m ahead. No pedestrians or cyclists appear, and there are no parked vehicles or work zones visible.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The leading truck is decelerating unexpectedly, so the driver must slow down to maintain a safe following distance."}
{"id": "train_03773", "split": "train", "clip_key": "titan_clip_972_000186_movie", "source": {"subset": "titan", "scenario": "clip_972", "frame": "000186"}, "frames": ["titan_clip_972_000186_movie_t-3.jpg", "titan_clip_972_000186_movie_t-2.jpg", "titan_clip_972_000186_movie_t-1.jpg", "titan_clip_972_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban scene shows a narrow two-way road approaching a railroad level crossing with no median; the patched asphalt and a green edge strip on the right are visible, and there is no motor traffic. Ahead, a group of pedestrians moves across and along the tracks in the ego path, constraining any approach to the crossing. On the right side near the curb, a pedestrian wearing a blue skirt, gray shirt, and a backpack walks away from the ego car along the edge and stays clear of the lane. At the near-right corner, another man steps diagonally from the edge toward the center and may enter the ego lane as he crosses. Railroad crossing equipment, including crossbuck signs and signal lights, stands at the tracks ahead.", "hazard_reasoning": "There is a pedestrian wearing a blue skirt, gray shirt, and carrying a backpack, walking at the right side of the road, away from the ego car. The driver should manoeuvre carefully around the pedestrian to maintain a safe distance and avoid collision."}
{"id": "train_03774", "split": "train", "clip_key": "2020-0214-102601_082413_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "082413"}, "frames": ["2020-0214-102601_082413_movie_t-3.jpg", "2020-0214-102601_082413_movie_t-2.jpg", "2020-0214-102601_082413_movie_t-1.jpg", "2020-0214-102601_082413_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban two-lane road with a solid yellow centerline and a patch of fresh asphalt stretches ahead; the surface is clean and traffic is light and steady, with the oncoming lane to the right mostly clear. A black SUV proceeds ahead in the ego lane at low speed, setting the pace. A cyclist wearing a maroon coat rides along the left edge ahead, moving away from the camera in the same direction and reducing room for the lead car and the ego vehicle. On the right sidewalk several pedestrians walk near a driveway, one edging toward the curb but staying off the roadway. Green mesh barriers and curb work on the left narrow the shoulder and mark a small work zone.", "hazard_reasoning": "There is a cyclist wearing a maroon coat, cycling on the left side of the road, away from the ego car. Manoeuvring carefully around the cyclist is important to maintain a safe separation and avoid collision."}
{"id": "train_03775", "split": "train", "clip_key": "titan_clip_979_000030_movie", "source": {"subset": "titan", "scenario": "clip_979", "frame": "000030"}, "frames": ["titan_clip_979_000030_movie_t-3.jpg", "titan_clip_979_000030_movie_t-2.jpg", "titan_clip_979_000030_movie_t-1.jpg", "titan_clip_979_000030_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrians on the roadway", "environment_perception": "An urban neighborhood street with narrow two-way traffic and no median is paved with textured blocks and appears clear of cars while foot traffic is active. The ego vehicle proceeds in the left half of the roadway as storefronts line both sides and bicycles are parked along the right curb. On the right edge near the ego path, a pedestrian wearing a gray shirt and white pants walks toward the ego car in the roadway, using it because the sidewalk is congested and potentially encroaching into the lane. Farther ahead in the center of the lane, another pedestrian walks away along the street, constraining the pace. Additional pedestrians cluster on the right sidewalk while parked bikes and scooters narrow the margin.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and white pants, walking on the right side of the road, towards the ego car, because of the congested sidewalk. The sidewalk congestion is forcing the pedestrian into the vehicle's path, so the driver should be aware of this potential conflict and adjust speed."}
{"id": "train_03776", "split": "train", "clip_key": "titan_clip_944_000432_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_944_000432_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_944_000432_movie_t-3_augB1.jpg", "titan_clip_944_000432_movie_t-2_augB1.jpg", "titan_clip_944_000432_movie_t-1_augB1.jpg", "titan_clip_944_000432_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow street with storefronts and bollards has smooth pavement and light motor traffic, but movement is constrained by a stopped delivery truck along the left side with its rear doors open. The truck stands partly in the lane as a worker handles boxes on a dolly at the rear, narrowing the usable roadway and slowing the ego vehicle's approach. In the middle of the road ahead, a pedestrian wearing black pants and carrying a handbag walks away from the ego car, occupying the lane and further constraining the path. Farther ahead near the center-right, a cyclist rides away at a steady pace, likely determining how quickly the ego vehicle can proceed past the obstruction. Bollards and shopfront signage limit lateral clearance.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying a handbag and walking away from the ego car in the middle of the road. The driver should slow down because the pedestrian is on the roadway and may step into the vehicle's path unexpectedly."}
{"id": "train_03777", "split": "train", "clip_key": "2020-0226-101332_059792_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "059792"}, "frames": ["2020-0226-101332_059792_movie_t-3.jpg", "2020-0226-101332_059792_movie_t-2.jpg", "2020-0226-101332_059792_movie_t-1.jpg", "2020-0226-101332_059792_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with a guardrail median and smooth pavement carries moderate traffic that bunches at a signalized intersection ahead. A gray van is directly ahead in the ego lane and remains stopped because the traffic light ahead is red, blocking the ego vehicle's path. To the left, a white microvan runs alongside at low speed in the neighboring lane, keeping close and limiting lateral space. Ahead-left, a red taxi queues in its lane and advances slightly with the line, remaining parallel to the ego vehicle. The opposing carriageway is separated by the guardrail on the right, and the red signal is clearly visible above the intersection.", "hazard_reasoning": "There is a gray van stopped in the ego lane because of a red traffic light ahead. You must stop to avoid a collision with the halted vehicle at the signal."}
{"id": "train_03778", "split": "train", "clip_key": "2020-0227-153144_017175_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "017175"}, "frames": ["2020-0227-153144_017175_movie_t-3.jpg", "2020-0227-153144_017175_movie_t-2.jpg", "2020-0227-153144_017175_movie_t-1.jpg", "2020-0227-153144_017175_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings, the pavement smooth and dry; traffic is moderate on our side and heavier in the opposite direction to the right behind a metal-railed median. Ahead, a black hatchback moves from the left lane into the ego lane and settles in front, reducing the available gap. A silver delivery van slightly ahead to the left continues straight in its lane at a similar pace, parallel to the ego path. Farther ahead a dark compact car proceeds in the ego lane, setting the flow as vehicles space out. No salient signals or hazards are visible.", "hazard_reasoning": "There is a black hatchback lane changing in front of the ego car, from the left lane to the ego lane. The vehicle's merging maneuver could reduce the available space, so the driver should slow down to maintain a safe gap and avoid sideswiping."}
{"id": "train_03779", "split": "train", "clip_key": "titan_clip_329_000498_movie", "source": {"subset": "titan", "scenario": "clip_329", "frame": "000498"}, "frames": ["titan_clip_329_000498_movie_t-3.jpg", "titan_clip_329_000498_movie_t-2.jpg", "titan_clip_329_000498_movie_t-1.jpg", "titan_clip_329_000498_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of the pedestrian", "environment_perception": "A narrow urban street climbs gently between tall buildings; the block-paved surface looks damp, there is no divider, and traffic is light. A man in a white shirt and black pants carrying a handbag walks away from the ego vehicle along the right edge of the road, close to its path. Far ahead in the same direction, a small dark car continues uphill away from the ego vehicle, loosely setting the pace. Another pedestrian stands farther up near the left storefront by the curb. Orange cones line the right curb and a bicycle is parked by a shop on the left, slightly narrowing the margins.", "hazard_reasoning": "There is a man wearing a white shirt with black pants, carrying a handbag, walking away from the ego car on the right side of the road. The driver should be aware of this pedestrian near traffic cones as he may step into the roadway unexpectedly."}
{"id": "train_03780", "split": "train", "clip_key": "2020-0131-135401_005211_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "005211"}, "frames": ["2020-0131-135401_005211_movie_t-3.jpg", "2020-0131-135401_005211_movie_t-2.jpg", "2020-0131-135401_005211_movie_t-1.jpg", "2020-0131-135401_005211_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with narrow lanes and smooth pavement runs between buildings, and traffic is light and steady. A white box truck immediately ahead in the ego lane is stopped, holding the ego car in place and blocking the path. Two pedestrians on the left sidewalk ahead walk along the curb and remain off the roadway. No oncoming vehicles are visible. An overhead circular sign shows 40, and strong sun glare from the right casts long shadows across the road.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane. The driver should stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_03781", "split": "train", "clip_key": "titan_clip_630_000306_movie", "source": {"subset": "titan", "scenario": "clip_630", "frame": "000306"}, "frames": ["titan_clip_630_000306_movie_t-3.jpg", "titan_clip_630_000306_movie_t-2.jpg", "titan_clip_630_000306_movie_t-1.jpg", "titan_clip_630_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around them", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway, no median or centerline, and smooth pavement; traffic is light with no moving vehicles visible. On the right edge just ahead, two women walk away from the ego car along the curb, keeping to the roadside but close enough that they may drift into the lane. Near the left storefront, another pedestrian stands at the curb and takes a step toward the roadway, which may bring her into the ego path. No signals are apparent. A couple of bicycles are parked along the right building, slightly narrowing the shoulder.", "hazard_reasoning": "There are two women walking together on the right side of the road, away from the ego car. The driver should carefully manoeuvre around them because they may step into the roadway unexpectedly."}
{"id": "train_03782", "split": "train", "clip_key": "titan_clip_1046_000312_movie", "source": {"subset": "titan", "scenario": "clip_1046", "frame": "000312"}, "frames": ["titan_clip_1046_000312_movie_t-3.jpg", "titan_clip_1046_000312_movie_t-2.jpg", "titan_clip_1046_000312_movie_t-1.jpg", "titan_clip_1046_000312_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street with no median and worn pavement runs straight ahead; temporary barriers narrow the left edge and overall traffic is light. A white car ahead in the ego lane continues straight at moderate speed, setting the pace. A silver car is stopped along the left curb near the barricades and slightly protrudes into the lane. An orange traffic cone on the left marks the construction zone and similar barricades extend along the block, while another cone stands at the right curb by a railing.", "hazard_reasoning": "There is an orange traffic cone on the left side of the road, indicating a construction zone. This cone indicates a construction zone that may reduce lane width or involve workers or equipment ahead, so the driver should slow down to navigate safely."}
{"id": "train_03783", "split": "train", "clip_key": "titan_clip_688_000354_movie", "source": {"subset": "titan", "scenario": "clip_688", "frame": "000354"}, "frames": ["titan_clip_688_000354_movie_t-3.jpg", "titan_clip_688_000354_movie_t-2.jpg", "titan_clip_688_000354_movie_t-1.jpg", "titan_clip_688_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "An urban shopping street with a narrow two-way carriageway lacks a centerline; the pavement is smooth and traffic is very light with no moving vehicles. Ahead in the middle of the road, a pedestrian wearing a black shirt and black pants walks away from the ego vehicle along the lane, occupying the path and constraining the approach. Slightly ahead on the right, another pedestrian steps off the curb and begins crossing toward the center, which may enter the ego lane. Orange cones line the right curb and a row of parked bicycles stands by the left storefronts, narrowing space near the edges.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants, walking in the middle of the road, away from the ego car. The driver should be aware of the pedestrian's presence to avoid a potential collision."}
{"id": "train_03784", "split": "train", "clip_key": "2020-0226-140503_020155_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "020155"}, "frames": ["2020-0226-140503_020155_movie_t-3.jpg", "2020-0226-140503_020155_movie_t-2.jpg", "2020-0226-140503_020155_movie_t-1.jpg", "2020-0226-140503_020155_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban two-way street with a single lane in each direction approaches a signalized intersection; the asphalt is wet and traffic is light. A white box truck is parked along the left curb just before the crosswalk, narrowing the ego lane. On the right at the crosswalk, a pedestrian with an umbrella waits near the edge and may enter the ego lane. Far ahead beyond the intersection, an oncoming white car travels in its lane on the right side of the center line without affecting the ego path. The overhead signal facing the ego vehicle shows green.", "hazard_reasoning": "There is a white truck parked on the left side of the road. The parked truck reduces visibility of oncoming vehicles and pedestrians at the intersection, requiring careful manoeuvring to navigate around it."}
{"id": "train_03785", "split": "train", "clip_key": "2020-0204-103442_053755_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-103442_053755_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-103442_053755_movie_t-3_augB1.jpg", "2020-0204-103442_053755_movie_t-2_augB1.jpg", "2020-0204-103442_053755_movie_t-1_augB1.jpg", "2020-0204-103442_053755_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down and keep a safe distance", "environment_perception": "An urban multi-lane arterial with two lanes in the ego direction runs beneath a pedestrian footbridge; the pavement is smooth and traffic is moderate to heavy with a short queue forming ahead. A black sedan directly ahead in the ego lane slows because congestion builds in front, constraining the ego car's pace. A large truck travels alongside in the adjacent right lane, moving slightly faster as it passes close to the ego vehicle. On the left sidewalk, two pedestrians walk along behind a guardrail and remain outside the roadway.", "hazard_reasoning": "There is a black sedan in front of the ego car that is slowing because of traffic congestion ahead in the ego lane. Slow down to maintain a safe following distance and avoid sudden stops in congested traffic."}
{"id": "train_03786", "split": "train", "clip_key": "2020-0129-105040_060079_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "060079"}, "frames": ["2020-0129-105040_060079_movie_t-3.jpg", "2020-0129-105040_060079_movie_t-2.jpg", "2020-0129-105040_060079_movie_t-1.jpg", "2020-0129-105040_060079_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian crossing", "environment_perception": "A narrow urban two-way street with one lane each direction passes small shops, the pavement dry and smooth, and traffic light. At the zebra crossing ahead, a pedestrian in a red coat pushing a small cart crosses from the left toward the right, entering the ego lane and constraining the approach. Another red?oated pedestrian waits at the left curb beside the crosswalk close to the roadway and may step out. Far ahead, a white car travels in the oncoming lane through the slight bend without affecting the ego path. Bicycles and traffic cones line the right sidewalk near a building entrance but stay off the roadway.", "hazard_reasoning": "There is a pedestrian wearing a red coat and pushing a cart, crossing the street at a pedestrian crossing, to the right side. The pedestrian is entering the lane at the marked crosswalk and may be slower due to the cart, so the driver must yield to ensure safe passage."}
{"id": "train_03787", "split": "train", "clip_key": "2020-0217-110854_032331_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "032331"}, "frames": ["2020-0217-110854_032331_movie_t-3.jpg", "2020-0217-110854_032331_movie_t-2.jpg", "2020-0217-110854_032331_movie_t-1.jpg", "2020-0217-110854_032331_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban boulevard with smooth asphalt and barriered sidewalks carries several same-direction lanes, and traffic is heavy and slow. A red hatchback ahead in the ego lane slows because of congestion ahead, setting the ego vehicle's pace. A white minivan slightly ahead in the left-adjacent lane creeps forward alongside, limiting any lane change. Farther ahead, a bus and several trucks queue across the lanes and inch away, creating the backup that causes the slowdown.", "hazard_reasoning": "There is a red hatchback slowing, in the ego lane, because of traffic congestion ahead. This slowing indicates dense traffic ahead and the driver should reduce speed to maintain a safe following distance."}
{"id": "train_03788", "split": "train", "clip_key": "titan_clip_58_000390_movie", "source": {"subset": "titan", "scenario": "clip_58", "frame": "000390"}, "frames": ["titan_clip_58_000390_movie_t-3.jpg", "titan_clip_58_000390_movie_t-2.jpg", "titan_clip_58_000390_movie_t-1.jpg", "titan_clip_58_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian carefully", "environment_perception": "A narrow urban two-way side street with no centerline runs between close-set buildings; the pavement is clean and vehicle traffic is light while pedestrian activity is high. On the right side near the camera, a man walks toward the ego car along the lane and may enter the ego path. In the middle ahead, a pedestrian with a child walks away in the roadway, occupying the lane and constraining pace. Farther ahead near an intersection, several pedestrians cross from left to right and could continue into the vehicle's line. A red triangular stop sign stands on the left at the junction ahead.", "hazard_reasoning": "There is a man walking on the right side of the road toward the ego car. The pedestrian walking toward the car may step into its path, so the driver needs to manoeuvre around the pedestrian."}
{"id": "train_03789", "split": "train", "clip_key": "2020-0204-150838_039276_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "039276"}, "frames": ["2020-0204-150838_039276_movie_t-3.jpg", "2020-0204-150838_039276_movie_t-2.jpg", "2020-0204-150838_039276_movie_t-1.jpg", "2020-0204-150838_039276_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with dry, smooth pavement carries slow traffic toward a signalized intersection. The white van directly ahead in the ego lane is stopped for the red light, holding the ego car at a standstill. A small white van in the lane to the left creeps forward toward the stop line while staying in lane, poised to proceed. A tarp-covered truck ahead in the right lane waits beside a row of cones along the curb without encroaching on the ego lane. Overhead signals display red for our approach, and a blue sign shows lane-use arrows. Cones narrow the right shoulder but no other hazards are visible.", "hazard_reasoning": "A white van stopping in the ego lane because of a red traffic light. The driver should stop to avoid colliding with the halted vehicle at the red light."}
{"id": "train_03790", "split": "train", "clip_key": "2020-0129-105040_069818_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "069818"}, "frames": ["2020-0129-105040_069818_movie_t-3.jpg", "2020-0129-105040_069818_movie_t-2.jpg", "2020-0129-105040_069818_movie_t-1.jpg", "2020-0129-105040_069818_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cyclist", "environment_perception": "An urban two-way street with one lane each direction runs between close buildings, marked by a solid yellow centerline, bike sharrows, and fresh zebra crossings; pavement is smooth and traffic light. A cyclist in a light brown top rides ahead along the left edge of the ego lane, moving away from the car and staying near the curb, which could constrain speed where the lane narrows. An oncoming white van approaches in the opposite lane and continues straight without encroaching. A pedestrian waits on the left sidewalk near a staircase by the crosswalk and does not enter the roadway. No-parking and no-stopping signs are posted on the left, and guardrails closely border both sidewalks.", "hazard_reasoning": "There is a cyclist wearing a light brown top, cycling on the left side of the road, away from the ego car. The cyclist could merge into your lane or cross your path unexpectedly, so you should manoeuvre carefully around them."}
{"id": "train_03791", "split": "train", "clip_key": "2020-0129-144857_078795_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "078795"}, "frames": ["2020-0129-144857_078795_movie_t-3.jpg", "2020-0129-144857_078795_movie_t-2.jpg", "2020-0129-144857_078795_movie_t-1.jpg", "2020-0129-144857_078795_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and paint-only separation from oncoming lanes on the right has smooth pavement marked 50, and traffic flows at a moderate, steady pace. A white van directly ahead in the ego lane accelerates away toward the next junction under a green light, keeping our path clear. To its left, a blue city bus ahead proceeds straight at a steady speed in the left lane without merging. On the right side, several oncoming cars, including a nearby black SUV, approach in their lanes and remain separated. The 50 speed marking is prominent and overhead signal hardware is visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03792", "split": "train", "clip_key": "titan_clip_35_000486_movie", "source": {"subset": "titan", "scenario": "clip_35", "frame": "000486"}, "frames": ["titan_clip_35_000486_movie_t-3.jpg", "titan_clip_35_000486_movie_t-2.jpg", "titan_clip_35_000486_movie_t-1.jpg", "titan_clip_35_000486_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist on left side", "environment_perception": "A dense urban commercial street features a single narrow two-way lane with cobblestone-like pavement, no divider, and slow motor flow amid heavy foot traffic. A small silver van ahead in the ego lane rolls slowly down the center and effectively sets the pace. Numerous pedestrians walk along both sides and a few step into the roadway near the van from the right, momentarily occupying the path and prompting caution. On the left side of the road, a cyclist wearing a white shirt and gray pants with a backpack rides toward the ego vehicle along the curb and may edge into the lane. A uniformed worker stands by storefronts on the right. No salient signals are visible.", "hazard_reasoning": "There is a cyclist, wearing a white shirt and gray pants, and carrying a backpack, cycling on the left side of the road, towards the ego car. The cyclist may move into the vehicle's lane, so the driver should be aware and ready to react."}
{"id": "train_03793", "split": "train", "clip_key": "2020-0131-135401_019259_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-135401_019259_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-135401_019259_movie_t-3_augB1.jpg", "2020-0131-135401_019259_movie_t-2_augB1.jpg", "2020-0131-135401_019259_movie_t-1_augB1.jpg", "2020-0131-135401_019259_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road approaches a junction under an elevated structure; the pavement is dry and traffic is heavy with a slow queue in the right lane. A black SUV ahead in the ego car's left lane slows because of congestion ahead, setting the ego vehicle's pace. To the right, a large dump truck alongside in the adjacent lane is nearly stopped beside a row of flexible posts. Farther ahead along the right lane, multiple cars creep forward in a line, contributing to the bottleneck. Overhead signs indicate straight ahead and a posted speed of 50.", "hazard_reasoning": "There is a black SUV slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. Drivers should slow down to maintain a safe distance and avoid abrupt braking due to the congestion."}
{"id": "train_03794", "split": "train", "clip_key": "titan_clip_163_000978_movie", "source": {"subset": "titan", "scenario": "clip_163", "frame": "000978"}, "frames": ["titan_clip_163_000978_movie_t-3.jpg", "titan_clip_163_000978_movie_t-2.jpg", "titan_clip_163_000978_movie_t-1.jpg", "titan_clip_163_000978_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for pedestrian crossing ahead", "environment_perception": "An urban scene on a narrow two-way local street with no marked centerline shows clean pavement and light traffic, with no oncoming vehicles visible. Ahead at a small junction, a pedestrian wearing a cap and blue shirt pushes a trolley across from right to left directly in front of the ego vehicle, moving to the left side of the road and temporarily controlling the vehicle's pace. At the left corner, a scooter waits stationary near the curb without entering the lane. Parked cars and mopeds line the right curb, narrowing the corridor but leaving the path ahead otherwise clear.", "hazard_reasoning": "There is a pedestrian wearing a cap and blue shirt, pushing a trolley, crossing to the left side of the road in front of the ego car. The pedestrian is entering the travel lane, so the driver should slow down to avoid a potential collision."}
{"id": "train_03795", "split": "train", "clip_key": "2020-0205-103411_087246_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "087246"}, "frames": ["2020-0205-103411_087246_movie_t-3.jpg", "2020-0205-103411_087246_movie_t-2.jpg", "2020-0205-103411_087246_movie_t-1.jpg", "2020-0205-103411_087246_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with lanes in both directions and a painted median appears in good condition, and traffic is heavy and queuing near a signalized intersection. A white hatchback directly ahead in the ego lane is stopped for a red traffic light, holding the ego car at a standstill. In the adjacent lane to the right, a dark dump truck and several cars are also lined up and slowly inch forward, shaping the overall pace. On the far side of the intersection, a small group of cyclists crosses from right to left, remaining outside the ego path while the queue waits. A few oncoming vehicles travel on the opposite carriageway to the right of the median without affecting the ego lane.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The ego-vehicle must stop to avoid colliding with the stationary hatchback and obey the red light signal."}
{"id": "train_03796", "split": "train", "clip_key": "2020-0213-143552_087101_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "087101"}, "frames": ["2020-0213-143552_087101_movie_t-3.jpg", "2020-0213-143552_087101_movie_t-2.jpg", "2020-0213-143552_087101_movie_t-1.jpg", "2020-0213-143552_087101_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road runs alongside an elevated structure, with two same-direction lanes and no median; the dry pavement looks smooth and traffic is slow and queued. A flatbed truck directly ahead in the ego lane is stopped, matching the warning about a yellow truck, and it blocks the lane. Another small flatbed in the left lane just ahead creeps forward, constraining any merge. A white passenger car at the near left advances in the adjacent lane beside the ego vehicle. The right edge hugs a wall and fence with no shoulder.", "hazard_reasoning": "There is a yellow truck stopped in front of the ego car. The stopped truck obstructs the lane and requires the driver to stop to avoid a collision."}
{"id": "train_03797", "split": "train", "clip_key": "titan_clip_946_000498_movie", "source": {"subset": "titan", "scenario": "clip_946", "frame": "000498"}, "frames": ["titan_clip_946_000498_movie_t-3.jpg", "titan_clip_946_000498_movie_t-2.jpg", "titan_clip_946_000498_movie_t-1.jpg", "titan_clip_946_000498_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist ahead.", "environment_perception": "An urban residential two-way road with a single narrow carriageway and white edge lines runs between close buildings; the pavement is smooth and traffic is light, with no median. Ahead, a person in a blue shirt cycles on the right side toward the ego car, approaching from far distance and tracking near the center, so they may enter the ego lane. No same-direction vehicles are visible and there is little oncoming motor traffic. No conspicuous traffic signals or speed signs appear. Parked bicycles and a scooter line the left curb beside doorways, slightly constricting the usable width but remaining stationary.", "hazard_reasoning": "There is a person wearing a blue shirt and cycling on the right side of the road, toward the ego car. Because the cyclist is approaching in the same lane, the driver should be prepared to adjust speed or path to avoid a potential collision."}
{"id": "train_03798", "split": "train", "clip_key": "titan_clip_1168_000096_movie", "source": {"subset": "titan", "scenario": "clip_1168", "frame": "000096"}, "frames": ["titan_clip_1168_000096_movie_t-3.jpg", "titan_clip_1168_000096_movie_t-2.jpg", "titan_clip_1168_000096_movie_t-1.jpg", "titan_clip_1168_000096_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "A narrow urban shopping street with brick paving and a single shared lane runs between dense storefronts; the surface looks good and vehicle traffic is light while pedestrian flow is moderate. The ego-vehicle moves slowly through the constricted corridor. Ahead in the lane, several pedestrians walk away and some drift across the center, constraining the ego's pace. On the left curb, a white van is parked with its rear door open and being offloaded, with bundles on the roadway that narrow the usable lane. On the right edge, a man stands beside a storefront close to the travel line and may step into the lane.", "hazard_reasoning": "A white van is parked on the left side of the road because it is being offloaded. The van partially blocks the lane, requiring the driver to navigate around it safely."}
{"id": "train_03799", "split": "train", "clip_key": "2020-0205-103411_054757_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "054757"}, "frames": ["2020-0205-103411_054757_movie_t-3.jpg", "2020-0205-103411_054757_movie_t-2.jpg", "2020-0205-103411_054757_movie_t-1.jpg", "2020-0205-103411_054757_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection with smooth pavement and moderate traffic forming a short queue. A black minivan directly ahead in the ego lane is stopped at the red light, holding the ego vehicle in place. To the left, a dark station wagon in the adjacent lane is also stopped beside the ego car without affecting the ego path. Farther ahead to the right, a small white van waits in the right-turn lane at the intersection, remaining outside the ego lane. Overhead signals display red and lane arrows show a right-turn-only lane on the far right.", "hazard_reasoning": "There is a black minivan stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to avoid a rear-end collision and comply with the traffic signal."}
{"id": "train_03800", "split": "train", "clip_key": "titan_clip_1223_000024_movie", "source": {"subset": "titan", "scenario": "clip_1223", "frame": "000024"}, "frames": ["titan_clip_1223_000024_movie_t-3.jpg", "titan_clip_1223_000024_movie_t-2.jpg", "titan_clip_1223_000024_movie_t-1.jpg", "titan_clip_1223_000024_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single undivided lane and worn asphalt runs between dense buildings, and overall traffic is light and slow due to heavy roadside parking. Ahead, a group of six pedestrians walks in the middle of the road away from the ego car, occupying the travel path and setting the pace. Immediately left of the ego vehicle, a parked white van with its rear door open protrudes into the lane, reducing passing space. Farther ahead, several cars are stopped along both curbs, especially on the left, narrowing the channel and keeping the ego vehicle centered. No signals or notable signs affect movement, and no oncoming vehicles appear.", "hazard_reasoning": "A group of six pedestrians is walking in the middle of the road, away from the ego car. Slow down to reduce speed and avoid a potential collision with them in your path."}
{"id": "train_03801", "split": "train", "clip_key": "2020-0129-105040_074270_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "074270"}, "frames": ["2020-0129-105040_074270_movie_t-3.jpg", "2020-0129-105040_074270_movie_t-2.jpg", "2020-0129-105040_074270_movie_t-1.jpg", "2020-0129-105040_074270_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential two-way street with one narrow lane per direction runs straight ahead, marked by a center yellow line and no median; the asphalt is dry and intact, and traffic is light. Ahead in the oncoming lane, a small silver van approaches at modest speed, keeping to its side as it nears the ego vehicle on the tight roadway. Parked cars fill bays along the left curb, and bicycles and stored items line the right edge by buildings, slightly narrowing the corridor. No pedestrians are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03802", "split": "train", "clip_key": "2020-0204-150838_029628_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "029628"}, "frames": ["2020-0204-150838_029628_movie_t-3.jpg", "2020-0204-150838_029628_movie_t-2.jpg", "2020-0204-150838_029628_movie_t-1.jpg", "2020-0204-150838_029628_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs beneath a steel railway overpass, with dry pavement and slow, moderate traffic approaching a signalized intersection. The ego lane continues straight with no median visible between same-direction lanes. A white kei van directly ahead in the ego lane slows, constraining the ego car's pace. To the right, another white van in the adjacent same-direction lane proceeds slowly in parallel, remaining in its lane. Farther ahead to the left, a red taxi queues near the curb lane as vehicles taper toward the underpass, not affecting the ego lane.", "hazard_reasoning": "There is a white van slowing down in front of the ego car, in the ego lane. The van is decelerating due to the red signal ahead, so the ego driver should reduce speed to maintain a safe following distance aligned with the warning content."}
{"id": "train_03803", "split": "train", "clip_key": "titan_clip_192_000420_movie", "source": {"subset": "titan", "scenario": "clip_192", "frame": "000420"}, "frames": ["titan_clip_192_000420_movie_t-3.jpg", "titan_clip_192_000420_movie_t-2.jpg", "titan_clip_192_000420_movie_t-1.jpg", "titan_clip_192_000420_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid pedestrian collision.", "environment_perception": "An urban back street with a very narrow unmarked two-way lane has smooth pavement and light traffic with no other moving vehicles. On the right, a pedestrian in a white shirt carrying a backpack stands by the curb close to the travel path and may step into the lane. Slightly ahead right, another pedestrian in dark clothing walks off the sidewalk toward the roadway, reducing clearance. At a near-right doorway, a man emerges and proceeds along the edge, remaining close to the vehicle's side. A motorcycle is parked on the left protruding slightly into the lane, adding a roadside obstacle.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, standing on the right side of the road. Stop because the pedestrian may step into the roadway unexpectedly from the right side."}
{"id": "train_03804", "split": "train", "clip_key": "titan_clip_907_000150_movie", "source": {"subset": "titan", "scenario": "clip_907", "frame": "000150"}, "frames": ["titan_clip_907_000150_movie_t-3.jpg", "titan_clip_907_000150_movie_t-2.jpg", "titan_clip_907_000150_movie_t-1.jpg", "titan_clip_907_000150_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian in roadway", "environment_perception": "A dense urban two-lane street is under construction, the pavement dry and the left side partially blocked by a stopped work truck; traffic is very light with no moving vehicles immediately ahead. Ahead in the middle of the road, a pedestrian in black pants, a blue shirt, a white vest, and a white helmet walks away from the ego car, diverted by the construction on the left and occupying the ego path. The flatbed truck sits ahead left with workers around its rear directing activity and narrowing the lane, limiting passage. Another worker on the near left steps from the sidewalk toward the roadway, encroaching on the lane. Orange fencing, cones, and work materials line the right, forming a tight corridor.", "hazard_reasoning": "There is a pedestrian wearing black pants, a blue shirt, a white vest, and a white helmet, walking in the middle of the road, away from the ego car, because of the construction work on the left. The driver should yield to avoid colliding with the pedestrian forced into the travel lane by the construction zone."}
{"id": "train_03805", "split": "train", "clip_key": "titan_clip_801_000444_movie", "source": {"subset": "titan", "scenario": "clip_801", "frame": "000444"}, "frames": ["titan_clip_801_000444_movie_t-3.jpg", "titan_clip_801_000444_movie_t-2.jpg", "titan_clip_801_000444_movie_t-1.jpg", "titan_clip_801_000444_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban side street with buildings tight to the curb lacks a centerline and divider, the pavement is smooth, and traffic is light with no moving vehicles visible. Ahead, a pedestrian with long dark hair in a white shirt crosses from right to left mid-block in front of the car where there is no crosswalk, moving directly through the ego path. Slightly farther ahead near the center of the lane, another person walks away along the roadway at a slow pace, remaining in the ego lane and limiting progress. Pedestrians on the left sidewalk linger by storefronts but stay off the road. A round speed-limit sign reading 30 is posted on a pole at the left. Parked bicycles and signboards line the right edge, tightening clearance.", "hazard_reasoning": "There is a pedestrian with long dark hair, wearing a white shirt, crossing the street in front of the ego car, from the right side of the street to the left side, because there is no crosswalk. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_03806", "split": "train", "clip_key": "titan_clip_56_000486_movie", "source": {"subset": "titan", "scenario": "clip_56", "frame": "000486"}, "frames": ["titan_clip_56_000486_movie_t-3.jpg", "titan_clip_56_000486_movie_t-2.jpg", "titan_clip_56_000486_movie_t-1.jpg", "titan_clip_56_000486_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian crossing ahead", "environment_perception": "An urban two-way street with no median and smooth pavement is seen, with light traffic and several vehicles parked along the curbs. A blue delivery truck is stopped ahead partly in the ego lane with a cone behind it, narrowing the lane and likely constraining the ego vehicle's pace. In the middle of the road ahead, a pedestrian wearing a white shirt crosses from the left to the right, briefly occupying the travel lane and potentially entering the ego path. On the right sidewalk near the camera, a worker pushes a handcart parallel to the roadway, staying off the lane. The oncoming lane appears clear.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and crossing the street, from the left side to the right side, in the middle of the road. You should yield because the pedestrian is in your path and has right-of-way."}
{"id": "train_03807", "split": "train", "clip_key": "titan_clip_1214_000192_movie", "source": {"subset": "titan", "scenario": "clip_1214", "frame": "000192"}, "frames": ["titan_clip_1214_000192_movie_t-3.jpg", "titan_clip_1214_000192_movie_t-2.jpg", "titan_clip_1214_000192_movie_t-1.jpg", "titan_clip_1214_000192_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "An urban neighborhood with a very narrow two-way side street lacks a center line or divider; pavement looks smooth and traffic is light. A black van ahead to the right drives in the middle of the roadway toward the ego car, occupying the shared lane and constraining space for the ego to proceed. Two pedestrians on the right edge beside the buildings walk and pause near the van close to the travel way, placing them near the ego vehicle's path. A blue pedestrian-zone sign with a 7:30-8:30 time restriction stands at the corner, and large school-zone style markings are painted on the road. A building corner creates a partially blind right turn.", "hazard_reasoning": "There is a black van driving in the middle of the road, toward the ego car. Because the van is centered and approaching directly, reaction time is reduced, so the driver should carefully manoeuvre to avoid collision."}
{"id": "train_03808", "split": "train", "clip_key": "2020-0226-101332_072568_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "072568"}, "frames": ["2020-0226-101332_072568_movie_t-3.jpg", "2020-0226-101332_072568_movie_t-2.jpg", "2020-0226-101332_072568_movie_t-1.jpg", "2020-0226-101332_072568_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped black SUV ahead", "environment_perception": "An urban multi-lane arterial runs through dense buildings with smooth pavement and moderate, steady same-direction traffic; a striped gore on the right marks a merging area. Ahead left, a black SUV is stopped in the left lane and protrudes slightly into the ego lane, creating a partial blockage the ego may need to pass. In the adjacent right lane, a silver van just ahead continues straight at similar speed, staying close alongside and limiting lateral room. Farther ahead in the ego lane, a light van cruises steadily, loosely setting the pace. A large box truck is parked at the left curb with its ramp down, narrowing the left lane.", "hazard_reasoning": "There is a black SUV stopped in the left lane, partially in the ego lane. The stopped SUV obstructs your path and could force sudden maneuvers if not anticipated, so be aware of its presence and plan to adjust speed or change lanes."}
{"id": "train_03809", "split": "train", "clip_key": "titan_clip_738_000516_movie", "source": {"subset": "titan", "scenario": "clip_738", "frame": "000516"}, "frames": ["titan_clip_738_000516_movie_t-3.jpg", "titan_clip_738_000516_movie_t-2.jpg", "titan_clip_738_000516_movie_t-1.jpg", "titan_clip_738_000516_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial side street with a single narrow lane and no divider has worn pavement and light, slow traffic near an intersection. A white sedan ahead in the same lane rolls forward cautiously, its pace constrained by pedestrians and a blue truck farther ahead. Farther up, the blue truck lingers near the intersection and narrows the available space, further slowing vehicles in the same direction. On the left side near the intersection, a man walks toward the ego vehicle, stepping inward because another pedestrian blocks his path. Shopfront displays and railings encroach on the curb, leaving a tight corridor for vehicles and people.", "hazard_reasoning": "There is a man walking on the left side of the intersection, toward the ego car, because there is another pedestrian in the way. The pedestrian could step into the vehicle's path unexpectedly, so the driver should carefully manoeuvre to avoid collision."}
{"id": "train_03810", "split": "train", "clip_key": "titan_clip_722_000450_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_722_000450_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_722_000450_movie_t-3_augB1.jpg", "titan_clip_722_000450_movie_t-2_augB1.jpg", "titan_clip_722_000450_movie_t-1_augB1.jpg", "titan_clip_722_000450_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane in each direction, no median, and patched but serviceable asphalt carries light traffic as the ego vehicle proceeds in the left lane. A pedestrian in a black T-shirt and black pants runs from the left sidewalk to the right directly in front of the ego car, crossing the ego lane and creating a close conflict. Far ahead in the same direction, a small orange mini-truck moves slowly near the lane center, modestly constraining the ego vehicle's pace. Several pedestrians stand along the left curb beside parked bicycles outside shops, close to the roadway but remaining on the sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and black pants, and running across the street from the left to the right, in front of the ego car. The driver should slow down because the pedestrian is unpredictably crossing the lane directly ahead, increasing collision risk without reducing speed."}
{"id": "train_03811", "split": "train", "clip_key": "2020-0127-132751_088854_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "088854"}, "frames": ["2020-0127-132751_088854_movie_t-3.jpg", "2020-0127-132751_088854_movie_t-2.jpg", "2020-0127-132751_088854_movie_t-1.jpg", "2020-0127-132751_088854_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with painted lane markings and roadside guardrails stretches ahead; the pavement is dry and traffic is light near a signalized crosswalk. A blue truck directly ahead in the ego lane slows toward the intersection, constraining the ego vehicle's pace. On the left, a pedestrian walks along the sidewalk by the railings near the crosswalk, remaining off the roadway. Farther ahead to the right, a small car proceeds straight in a right lane through the intersection without affecting the ego path. An overhead traffic light shows a green straight arrow.", "hazard_reasoning": "There is a blue truck slowing in front of the ego car, in the ego lane. The truck's deceleration could force the ego-vehicle to brake abruptly, so the driver should reduce speed to maintain a safe following distance aligned with the warning to slow down."}
{"id": "train_03812", "split": "train", "clip_key": "2020-0210-101957_010663_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "010663"}, "frames": ["2020-0210-101957_010663_movie_t-3.jpg", "2020-0210-101957_010663_movie_t-2.jpg", "2020-0210-101957_010663_movie_t-1.jpg", "2020-0210-101957_010663_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with a single lane each direction meets a cross street at a signalized intersection; the pavement is smooth and traffic is light. The ego vehicle approaches the stop line in the left lane as buildings and utility poles line both sides, with no median. A pedestrian steps onto the near crosswalk from the right and walks left across the ego lane, directly occupying the path and determining the pace. Far ahead beyond the intersection, a small car continues straight in the same direction in the left lane and gradually departs without affecting the ego vehicle. Overhead traffic lights hang above the intersection, but their aspects are not clearly visible. Bicycles are parked along the left sidewalk and no other moving hazards appear.", "hazard_reasoning": "All clear; maintain normal vigilance as no hazards are present."}
{"id": "train_03813", "split": "train", "clip_key": "2020-0227-104226_101579_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "101579"}, "frames": ["2020-0227-104226_101579_movie_t-3.jpg", "2020-0227-104226_101579_movie_t-2.jpg", "2020-0227-104226_101579_movie_t-1.jpg", "2020-0227-104226_101579_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with multiple lanes runs under clear daylight; a guardrail median separates oncoming traffic to the right, and the smooth pavement carries a moderate, steady flow. Ahead in the ego lane, a gray box truck drives away from the ego car and continues straight, setting the pace and partially blocking the view. In the adjacent right lane a small white van travels slightly farther ahead in the same direction, holding its lane. A white car is close on the far right beside the ego vehicle, overtaking without entering the ego lane.", "hazard_reasoning": "There is a gray truck driving in the ego lane away from the ego car. The truck ahead may brake suddenly or block your view of the road, so you should be aware of its movements."}
{"id": "train_03814", "split": "train", "clip_key": "titan_clip_1263_000030_movie", "source": {"subset": "titan", "scenario": "clip_1263", "frame": "000030"}, "frames": ["titan_clip_1263_000030_movie_t-3.jpg", "titan_clip_1263_000030_movie_t-2.jpg", "titan_clip_1263_000030_movie_t-1.jpg", "titan_clip_1263_000030_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential street with closely spaced buildings forms a narrow two-way road without a center line or median, the pavement smooth and dry, and traffic remains absent through the clip. The ego-vehicle proceeds along the left side of the carriageway. On the right, a white minibus is parked in a recessed bay and stays stationary, not encroaching on the lane. Farther ahead on the right, a silver minivan is also parked and remains still. No vehicles travel ahead or as oncoming traffic, and no pedestrians are present. A raised speed hump is visible in the roadway ahead.", "hazard_reasoning": "No caption available. Since there are no moving road users or obstacles in the scene, the driver can proceed without special caution by maintaining normal driving."}
{"id": "train_03815", "split": "train", "clip_key": "titan_clip_909_000234_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_909_000234_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_909_000234_movie_t-3_augB1.jpg", "titan_clip_909_000234_movie_t-2_augB1.jpg", "titan_clip_909_000234_movie_t-1_augB1.jpg", "titan_clip_909_000234_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane in each direction lacks a median and has worn but serviceable pavement; vehicular flow is light while pedestrian activity is dense. Two pedestrians ahead in the middle of the ego lane walk away from the camera carrying handbags, moving there because a parked vehicle blocks the side and they remain in the path of travel. Additional pedestrians stand and stroll along both sidewalks, some near the curb on the right and edging toward the roadway, so they are close to the ego path. A small work truck is parked on the left with workers and orange cones, and more cones line the right edge, temporarily narrowing the corridor.", "hazard_reasoning": "There are two pedestrians carrying handbags, walking in the middle of the road, away from the ego car, because of the parked vehicle. The driver should slow down to avoid a collision with these pedestrians obstructing the lane."}
{"id": "train_03816", "split": "train", "clip_key": "2020-0131-135401_079883_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "079883"}, "frames": ["2020-0131-135401_079883_movie_t-3.jpg", "2020-0131-135401_079883_movie_t-2.jpg", "2020-0131-135401_079883_movie_t-1.jpg", "2020-0131-135401_079883_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided roadway with two lanes in the ego direction rises between tall buildings, with a concrete median on the right and noise barriers on the left; the pavement is smooth and traffic is light and steady. A white van directly ahead in the ego lane continues straight and gradually pulls away, effectively setting the ego vehicle's pace. A darker car farther ahead in the left lane travels slightly faster while keeping its lane, posing no immediate interaction. On the adjacent carriageway to the right beyond the median, several vehicles move the opposite way and remain separated.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. The driver should follow the vehicle ahead to maintain a safe distance in case it brakes suddenly."}
{"id": "train_03817", "split": "train", "clip_key": "titan_clip_366_000210_movie", "source": {"subset": "titan", "scenario": "clip_366", "frame": "000210"}, "frames": ["titan_clip_366_000210_movie_t-3.jpg", "titan_clip_366_000210_movie_t-2.jpg", "titan_clip_366_000210_movie_t-1.jpg", "titan_clip_366_000210_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "be aware of the stopped cyclist ahead", "environment_perception": "A narrow urban back street with a single unmarked lane runs between buildings; the asphalt is smooth and traffic is light. The ego-vehicle proceeds straight with railings and parked bicycles along the left and a storefront curb on the right. A cyclist on the left ahead rides toward the ego, wearing a black T-shirt, shorts, and a backpack, and may pass close in the center of the lane. On the right edge just ahead, a person stands beside a handcart stacked with boxes while looking at a phone, narrowing the usable lane. Farther ahead, a pedestrian walks along the right sidewalk without entering the roadway.", "hazard_reasoning": "There is a cyclist stopped on the left side of the road, wearing a black T-shirt, a pair of shorts, with a back-pack. The cyclist's presence in the lane poses a potential obstacle, so the driver should be aware to anticipate any movement or lane adjustments."}
{"id": "train_03818", "split": "train", "clip_key": "titan_clip_8_000054_movie", "source": {"subset": "titan", "scenario": "clip_8", "frame": "000054"}, "frames": ["titan_clip_8_000054_movie_t-3.jpg", "titan_clip_8_000054_movie_t-2.jpg", "titan_clip_8_000054_movie_t-1.jpg", "titan_clip_8_000054_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around them", "environment_perception": "A narrow two-way urban street with paver bricks and no centerline runs between tall buildings; the surface is clean and vehicular flow is light. Ahead on the right, two pedestrians, one in a blue shirt and one in a white shirt, walk toward the ego car along the curb and could edge into the lane. Farther ahead near the center of the path, another white-shirted pedestrian walks away from the camera, potentially constraining the vehicle's pace. A dark SUV is parked along the right curb ahead, reducing usable width. Bicycles are parked along the left edge near storefronts, further narrowing the corridor.", "hazard_reasoning": "There are two pedestrians wearing a blue shirt and a white shirt, walking on the right side of the road, towards the ego car. They are moving towards the vehicle's path, so the driver should manoeuvre carefully around them to avoid collision."}
{"id": "train_03819", "split": "train", "clip_key": "titan_clip_239_000492_movie", "source": {"subset": "titan", "scenario": "clip_239", "frame": "000492"}, "frames": ["titan_clip_239_000492_movie_t-3.jpg", "titan_clip_239_000492_movie_t-2.jpg", "titan_clip_239_000492_movie_t-1.jpg", "titan_clip_239_000492_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban side street with a single unmarked lane runs between tall buildings; the pavement is clean and dry and traffic is very light with no oncoming vehicles. Ahead in the middle of the road, a pedestrian wearing a black T-shirt and black pants pushes a handcart away from the ego car, occupying the lane and setting the pace. Slightly ahead to the right, another pedestrian in a white shirt walks toward the ego vehicle near the curb, reducing available space. A black van stands on the right with its rear hatch open, partially blocking the roadway and further narrowing the path.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, black pants, pushing a cart, and walking away from the ego car in the middle of the road. The pedestrian's presence in the roadway limits available space and increases collision risk, so the driver should carefully manoeuvre around them to maintain safety."}
{"id": "train_03820", "split": "train", "clip_key": "titan_clip_1307_000498_movie", "source": {"subset": "titan", "scenario": "clip_1307", "frame": "000498"}, "frames": ["titan_clip_1307_000498_movie_t-3.jpg", "titan_clip_1307_000498_movie_t-2.jpg", "titan_clip_1307_000498_movie_t-1.jpg", "titan_clip_1307_000498_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single undivided lane runs straight ahead on smooth pavement, with light vehicle traffic and many pedestrians; a small delivery truck is far ahead in the same lane. On the left edge near the ego path, three pedestrians-one in a white T-shirt and black pants carrying a backpack, another in a black T-shirt and pink shorts, and a third in a yellow T-shirt and green skirt carrying a backpack-stand together. In the center ahead, multiple pedestrians walk slowly along the lane, effectively occupying it and constraining the pace. On the right edge by the storefronts, an adult and a child walk toward the camera close to the roadway while keeping to the side.", "hazard_reasoning": "There are three people, one wearing a white t-shirt and black pants, and carrying a backpack, another wearing a black t-shirt and pink shorts, and a third person wearing a yellow t-shirt and green skirt, and carrying a backpack, standing on the left side of the road together. The driver should slow down to anticipate that these pedestrians may step into the roadway unexpectedly, reducing collision risk aligned with the warning to slow down."}
{"id": "train_03821", "split": "train", "clip_key": "titan_clip_945_000042_movie", "source": {"subset": "titan", "scenario": "clip_945", "frame": "000042"}, "frames": ["titan_clip_945_000042_movie_t-3.jpg", "titan_clip_945_000042_movie_t-2.jpg", "titan_clip_945_000042_movie_t-1.jpg", "titan_clip_945_000042_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban neighborhood street with a single narrow two-way carriageway lacking a centerline has smooth pavement and very light traffic as the road bends left between close buildings. A bicyclist rides ahead near the right edge in the same direction at low speed toward the bend, occupying much of the usable lane and likely constraining the ego-vehicle's pace. No oncoming traffic is visible. A small delivery scooter or cart is parked on the left by the curb, forming a minor roadside obstacle. A white directional arrow is painted on the roadway, and no signals or posted limits are visible.", "hazard_reasoning": "There are no visible hazards; maintain awareness as you proceed."}
{"id": "train_03822", "split": "train", "clip_key": "2020-0218-103119_035439_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "035439"}, "frames": ["2020-0218-103119_035439_movie_t-3.jpg", "2020-0218-103119_035439_movie_t-2.jpg", "2020-0218-103119_035439_movie_t-1.jpg", "2020-0218-103119_035439_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way road with smooth pavement and a narrow painted divider passes between mid-rise buildings, and traffic flows slowly. A white box truck directly ahead in the ego lane slows and nearly stops because of congestion ahead, constraining the ego vehicle's pace. Slightly ahead to the left, a green city bus is stopped near the curb in the same direction, adding to the queue. The opposing lane on the right appears clear of immediate oncoming vehicles.", "hazard_reasoning": "There's a white truck slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The truck's deceleration indicates a buildup of slow-moving traffic ahead, so the driver must stop to maintain a safe distance."}
{"id": "train_03823", "split": "train", "clip_key": "titan_clip_374_000582_movie", "source": {"subset": "titan", "scenario": "clip_374", "frame": "000582"}, "frames": ["titan_clip_374_000582_movie_t-3.jpg", "titan_clip_374_000582_movie_t-2.jpg", "titan_clip_374_000582_movie_t-1.jpg", "titan_clip_374_000582_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "be aware of cyclist", "environment_perception": "An urban commercial street without a median has two travel lanes and a curbside shoulder, the pavement is smooth, and traffic flow is moderate with vehicles ahead easing toward a distant junction. On the right edge near the curb, a cyclist wearing white pants rides toward the ego vehicle to pass a silver van that is stopped along the curb, briefly encroaching into the ego lane. Ahead in the same direction, a small truck and several cars proceed slowly, constraining the ego car's pace. The stopped van narrows the lane on the right and forms the obstruction that the cyclist avoids.", "hazard_reasoning": "There is a cyclist wearing white pants and cycling on the right side of the road towards the ego car, because of the parked vehicle. The cyclist may move further into the travel lane due to the parked vehicle obstructing their path, so the driver should be aware of their position."}
{"id": "train_03824", "split": "train", "clip_key": "titan_clip_70_000108_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_70_000108_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_70_000108_movie_t-3_augB1.jpg", "titan_clip_70_000108_movie_t-2_augB1.jpg", "titan_clip_70_000108_movie_t-1_augB1.jpg", "titan_clip_70_000108_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow urban street with smooth asphalt runs between close-set buildings and a fenced walkway on the right; there is no centerline and traffic is light. A pedestrian wearing a gray shirt and white pants, carrying handbags, walks away from the ego vehicle near the middle of the road because a vehicle is parked on the left, and he may occupy the ego lane briefly. To his left, another pedestrian with a backpack walks ahead along the curb, keeping to the edge and not crossing. Ahead on the left, a white FedEx delivery truck is stopped partly in the lane, narrowing the roadway and prompting pedestrians to move around it. Green railings line the right side.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, white pants, and carrying handbags, walking in the middle of the road, away from the ego car, because of a parked vehicle on the left. The driver should yield because the pedestrian is forced into the travel lane and may cross unexpectedly."}
{"id": "train_03825", "split": "train", "clip_key": "2020-0207-101955_122749_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "122749"}, "frames": ["2020-0207-101955_122749_movie_t-3.jpg", "2020-0207-101955_122749_movie_t-2.jpg", "2020-0207-101955_122749_movie_t-1.jpg", "2020-0207-101955_122749_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial runs under an elevated expressway with two same-direction lanes and a raised curb on the right; the pavement looks smooth and traffic is heavy and slow. Directly ahead in the ego lane, a white van is stopped as congestion backs up, blocking the path. Ahead to the left, a garbage truck in the adjacent lane queues with brake lights on and inches forward, remaining alongside the ego vehicle. Farther ahead in that lane, a large box truck also waits in the jam and constrains overall flow.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The stopped van reveals congested traffic ahead, so the driver must stop to maintain a safe distance."}
{"id": "train_03826", "split": "train", "clip_key": "2020-0225-145150_035228_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "035228"}, "frames": ["2020-0225-145150_035228_movie_t-3.jpg", "2020-0225-145150_035228_movie_t-2.jpg", "2020-0225-145150_035228_movie_t-1.jpg", "2020-0225-145150_035228_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two lanes in the ego direction is separated from oncoming traffic by double solid lines; the pavement looks smooth and traffic is heavy and slow. A small blue truck is directly ahead in the ego lane and sits stopped because of congestion ahead, holding our lane. To the left, a light green hatchback in the curb lane creeps forward near the sidewalk and continues parallel to us amid the queue. In the nearest oncoming lane to the right, a white van approaches steadily beyond the center lines and passes by without interacting.", "hazard_reasoning": "There is a blue truck stopped in the ego lane because of the traffic congestion ahead. The driver should stop to avoid colliding with the stationary truck under these conditions."}
{"id": "train_03827", "split": "train", "clip_key": "2020-0221-115122_028579_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "028579"}, "frames": ["2020-0221-115122_028579_movie_t-3.jpg", "2020-0221-115122_028579_movie_t-2.jpg", "2020-0221-115122_028579_movie_t-1.jpg", "2020-0221-115122_028579_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down.", "environment_perception": "An urban arterial under an elevated expressway has two lanes in the ego direction, a concrete divider on the left, smooth pavement, and heavy slow-moving traffic. A white hatchback directly ahead in the ego lane slows because of congestion and governs the ego car's speed. In the adjacent right lane ahead, a line of vehicles including a black SUV and a small truck crawls and intermittently stops, constraining overall flow. A white van at the near right curb is stopped and slightly angled toward the lane, and it may enter the ego lane. Several cars stand along the right edge, narrowing the usable roadway.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car in the ego lane, because of traffic congestion. You should slow down to maintain a safe following distance due to the congestion ahead."}
{"id": "train_03828", "split": "train", "clip_key": "2020-0204-150838_068717_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "068717"}, "frames": ["2020-0204-150838_068717_movie_t-3.jpg", "2020-0204-150838_068717_movie_t-2.jpg", "2020-0204-150838_068717_movie_t-1.jpg", "2020-0204-150838_068717_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An elevated urban expressway with two same-direction lanes and concrete barriers on both sides has smooth pavement and light to moderate flow that slows slightly ahead. A gray box truck directly ahead in the rightmost ego lane slows because traffic further ahead in the same lane is moving slowly, constraining the ego car's pace. In the adjacent left lane, a small flatbed truck travels slightly faster and begins to pass without signaling or changing lanes toward the ego vehicle. A small piece of debris lies near the right barrier on the shoulder.", "hazard_reasoning": "There is a gray truck slowing down in front of the ego car because of slow moving traffic ahead in the ego lane. The truck's deceleration indicates upcoming congestion, and the driver must slow down to maintain a safe following distance."}
{"id": "train_03829", "split": "train", "clip_key": "2020-0220-151845_047422_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "047422"}, "frames": ["2020-0220-151845_047422_movie_t-3.jpg", "2020-0220-151845_047422_movie_t-2.jpg", "2020-0220-151845_047422_movie_t-1.jpg", "2020-0220-151845_047422_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial under an elevated expressway has two same-direction lanes with a bollard-separated lane on the far left and a guardrail on the right; the pavement is clean and traffic is moderate and moving. Ahead in the ego lane, a tarp-covered flatbed truck accelerates as space opens, effectively setting the ego vehicle's pace because traffic ahead is clear. In the adjacent right lane, a silver hatchback runs slightly ahead at steady speed, limiting any immediate rightward merge. On the segregated far-left lane, a large yellow coach moves slowly alongside but remains separated by posts, so it does not interact with the ego lane. An overhead electronic information board is visible, and no oncoming traffic appears.", "hazard_reasoning": "There is a red truck accelerating ahead of the ego-car, in the ego lane, because traffic ahead is clear. The accelerating red truck may slow or brake suddenly, so the driver needs to maintain a safe following distance and be ready to react."}
{"id": "train_03830", "split": "train", "clip_key": "titan_clip_169_000336_movie", "source": {"subset": "titan", "scenario": "clip_169", "frame": "000336"}, "frames": ["titan_clip_169_000336_movie_t-3.jpg", "titan_clip_169_000336_movie_t-2.jpg", "titan_clip_169_000336_movie_t-1.jpg", "titan_clip_169_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Manoeuvre around pedestrian carefully", "environment_perception": "An urban scene under an elevated railway on a narrow two-way street without a center line; the pavement is smooth and dry, and vehicle traffic is light with no oncoming cars visible. A man in black pants and a black coat carrying a briefcase crosses from the left in a marked crosswalk near the ego lane, directly affecting the vehicle's path. Slightly ahead, a woman with an umbrella crosses left to right in the same crosswalk and continues through the ego lane, constraining speed. Farther ahead near the center, two pedestrians move across and then along the right edge, briefly occupying the area the car is approaching. A white van stands at the left curb near the intersection, narrowing available space.", "hazard_reasoning": "The pedestrian in black pants, a black coat, carrying a briefcase, is crossing the street in a marked crosswalk, to the left of the ego-car. The driver should manoeuvre around the pedestrian carefully to avoid a collision since the pedestrian is entering the vehicle's path."}
{"id": "train_03831", "split": "train", "clip_key": "2020-0205-103411_006026_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "006026"}, "frames": ["2020-0205-103411_006026_movie_t-3.jpg", "2020-0205-103411_006026_movie_t-2.jpg", "2020-0205-103411_006026_movie_t-1.jpg", "2020-0205-103411_006026_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian crossing ahead", "environment_perception": "An urban multi-lane intersection with no median is ahead; pavement looks smooth and overall traffic is light as the ego vehicle waits at the stop line on the left-side lane. From the right, two cyclists ride leftward across the marked crosswalk in front of the ego car, potentially entering its path. On the left sidewalk, a man wearing a brown coat and black pants and carrying a black bag walks toward the same crosswalk, likely to cross ahead. Near the left corner, another pedestrian approaches the curb and slows at the crosswalk, close to the ego lane.", "hazard_reasoning": "There is a man wearing a brown coat and black pants, and carrying a black bag, who is walking on a sidewalk to the left of the ego-car, and moving towards the crosswalk in front of the ego-car. The driver should yield because the pedestrian is entering the crosswalk ahead and may step into the vehicle's path."}
{"id": "train_03832", "split": "train", "clip_key": "2020-0226-101332_069199_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "069199"}, "frames": ["2020-0226-101332_069199_movie_t-3.jpg", "2020-0226-101332_069199_movie_t-2.jpg", "2020-0226-101332_069199_movie_t-1.jpg", "2020-0226-101332_069199_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban streetscape with tall buildings lines a smooth multi-lane arterial, and traffic is dense but beginning to flow. The signal ahead shows green. A silver van directly ahead in the ego lane starts moving forward under the green light and sets the pace for the ego vehicle. A red taxi alongside in the left lane travels parallel at low speed, remaining in its lane. Vehicles in the right lane, including a silver van ahead and a white minivan alongside, move slowly with the queue and stay in their lane.", "hazard_reasoning": "There is a silver van starting to move in the ego lane, because of the green traffic light. The driver should start moving promptly to follow traffic flow and avoid unexpected stopping."}
{"id": "train_03833", "split": "train", "clip_key": "titan_clip_1199_000372_movie", "source": {"subset": "titan", "scenario": "clip_1199", "frame": "000372"}, "frames": ["titan_clip_1199_000372_movie_t-3.jpg", "titan_clip_1199_000372_movie_t-2.jpg", "titan_clip_1199_000372_movie_t-1.jpg", "titan_clip_1199_000372_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban narrow two-way street with no median and worn but intact pavement runs between close buildings, and traffic is light with no oncoming flow. A small silver car ahead in the ego lane moves slowly near the left curb and briefly pauses, constraining the ego vehicle's pace. On the right edge nearby, a pedestrian wearing gray pants and carrying a bag walks away along the roadside. Farther ahead on the left sidewalk, another person stands near the curb without stepping into the lane. Parked bicycles and posts crowd the left shoulder, narrowing the usable roadway, and a small side street branches off to the right.", "hazard_reasoning": "There is a pedestrian wearing gray pants and carrying a bag, walking along the right side of the road, away from the ego car. The driver should stay alert since the pedestrian may step off the curb into traffic."}
{"id": "train_03834", "split": "train", "clip_key": "2020-0226-101332_038253_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "038253"}, "frames": ["2020-0226-101332_038253_movie_t-3.jpg", "2020-0226-101332_038253_movie_t-2.jpg", "2020-0226-101332_038253_movie_t-1.jpg", "2020-0226-101332_038253_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately behind the black sedan.", "environment_perception": "An urban multi-lane arterial runs between tall buildings with smooth pavement and a metal fence median separating opposite traffic; flow is heavy as vehicles queue at a signal. The ego vehicle travels in a center lane. A black sedan directly ahead in the ego lane is stopped for the red light and holds the ego car. In the adjacent left lane, a white van and several cars queue alongside, creeping slightly and limiting any lane change. Farther ahead in the same lane, a white van also waits in the line. An overhead traffic signal ahead shows red for this approach.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop immediately to maintain a safe following distance and avoid rear-ending the halted vehicle."}
{"id": "train_03835", "split": "train", "clip_key": "2020-0129-144857_058408_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "058408"}, "frames": ["2020-0129-144857_058408_movie_t-3.jpg", "2020-0129-144857_058408_movie_t-2.jpg", "2020-0129-144857_058408_movie_t-1.jpg", "2020-0129-144857_058408_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway in the city curves gently right, with smooth pavement and high barriers on both sides; two same-direction lanes run ahead, the right lane separated by flexible bollards and a curb. Traffic is light and flows steadily. A white box truck ahead in the ego lane pulls away as traffic ahead is moving, increasing the gap without constraining the ego vehicle. In the adjacent right lane, a darker truck continues forward at similar speed behind another vehicle, remaining separated by the posts and not merging. No signals or unusual signs are visible, and there are no pedestrians or parked obstacles.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03836", "split": "train", "clip_key": "2020-0129-105040_005395_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "005395"}, "frames": ["2020-0129-105040_005395_movie_t-3.jpg", "2020-0129-105040_005395_movie_t-2.jpg", "2020-0129-105040_005395_movie_t-1.jpg", "2020-0129-105040_005395_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane arterial runs between tall buildings, the pavement smooth and dry, with light to moderate same-direction flow. A gray truck drives ahead in the ego lane, moving away from the camera and effectively setting the pace. A white sedan farther ahead slightly to the left continues straight in its lane without changing speed. Along the right edge, a metal fence borders the roadway and several trucks are stopped beyond it at the curb, separated from traffic and not interacting with the ego lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03837", "split": "train", "clip_key": "2020-0204-103442_003066_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "003066"}, "frames": ["2020-0204-103442_003066_movie_t-3.jpg", "2020-0204-103442_003066_movie_t-2.jpg", "2020-0204-103442_003066_movie_t-1.jpg", "2020-0204-103442_003066_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban scene shows a smooth single-lane connector curving right beside a multi-lane arterial, divided by a concrete wall; traffic is light in the ego lane and heavy on the parallel roadway. Ahead in the ego lane, a white van slows as another vehicle merges into the lane farther ahead, constraining the ego vehicle's pace. To the right, cars on the adjacent roadway move slowly in the same direction but remain separated by the barrier. On the left sidewalk near the curve, several pedestrians stand and walk along the railing without approaching the road. Overhead directional signs span the junction area.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of a vehicle cutting into the ego lane ahead. You should slow down to maintain a safe following distance when vehicles merge into your lane unexpectedly."}
{"id": "train_03838", "split": "train", "clip_key": "2020-0204-150838_039489_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "039489"}, "frames": ["2020-0204-150838_039489_movie_t-3.jpg", "2020-0204-150838_039489_movie_t-2.jpg", "2020-0204-150838_039489_movie_t-1.jpg", "2020-0204-150838_039489_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and a cone-separated median has moderate traffic that is momentarily queued at a signalized intersection. A white van directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle. A silver hatchback in the lane to the left is also stopped slightly ahead, queueing alongside and limiting lateral space. On the far side of the cones, opposing traffic approaches the intersection in its right-side lanes but remains separated from the ego path. The overhead signal facing the ego direction shows red, and construction cones line the right edge of the lane.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The white van is halted at a red light, so the driver must stop to avoid a collision with the vehicle ahead."}
{"id": "train_03839", "split": "train", "clip_key": "2020-0217-110854_035162_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "035162"}, "frames": ["2020-0217-110854_035162_movie_t-3.jpg", "2020-0217-110854_035162_movie_t-2.jpg", "2020-0217-110854_035162_movie_t-1.jpg", "2020-0217-110854_035162_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs through dense city blocks; the pavement is smooth and traffic is heavy with vehicles queued at a signal. The ego-vehicle occupies the leftmost of several same-direction lanes and is halted with the line. A gray hatchback directly ahead is stopped for a red traffic light and controls the ego car's pace. A large coach bus to the right in the adjacent lane also waits in the queue, keeping close alongside. On the left, a silver van in the neighboring lane inches forward parallel to the ego car. An overhead traffic signal at the intersection shows red above the crosswalk.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego car, because of a red traffic light. The driver should stop immediately to avoid rear-ending the halted vehicle at the intersection."}
{"id": "train_03840", "split": "train", "clip_key": "titan_clip_361_000546_movie", "source": {"subset": "titan", "scenario": "clip_361", "frame": "000546"}, "frames": ["titan_clip_361_000546_movie_t-3.jpg", "titan_clip_361_000546_movie_t-2.jpg", "titan_clip_361_000546_movie_t-1.jpg", "titan_clip_361_000546_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked bicycle", "environment_perception": "An urban commercial street with a single narrow lane and cobblestone pavement runs between rows of shops; there is no visible median, bollards line both sides, and motor traffic is light with no vehicles ahead. Two pedestrians on the right edge near the ego path walk along the bollards, one looking at a phone, so their proximity to the carriageway could constrain the vehicle's pace. Farther ahead on the right, another pedestrian continues away from the camera along the narrow margin but remains outside the lane. A bicycle is parked on the left side of the road beside the bollards, slightly narrowing the clearance. No traffic signals or speed signs are prominent, and the scene remains steady without major changes.", "hazard_reasoning": "There is a bicycle parked on the left side of the road. The parked bicycle could reduce available road width and pose a collision risk, so the driver should be aware of its position."}
{"id": "train_03841", "split": "train", "clip_key": "2020-0213-143552_012398_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "012398"}, "frames": ["2020-0213-143552_012398_movie_t-3.jpg", "2020-0213-143552_012398_movie_t-2.jpg", "2020-0213-143552_012398_movie_t-1.jpg", "2020-0213-143552_012398_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road curves right past apartments and a high stone retaining wall, with no median and smooth pavement; traffic is light and steady. Ahead in the ego lane, a small white truck drives away along the rightward bend, keeping ahead of the ego vehicle. Farther ahead, a white minivan in the same direction continues through the curve, modestly pacing the truck. At a side street on the left, a dark car waits at the corner and may merge into the ego lane. A no-parking sign stands on a roadside pole, and the wall creates a limited view on the inside of the curve.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because of the green traffic lights. Follow the vehicle ahead to maintain safe spacing and anticipate any upcoming signal change."}
{"id": "train_03842", "split": "train", "clip_key": "2020-0228-150133_078093_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "078093"}, "frames": ["2020-0228-150133_078093_movie_t-3.jpg", "2020-0228-150133_078093_movie_t-2.jpg", "2020-0228-150133_078093_movie_t-1.jpg", "2020-0228-150133_078093_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban arterial runs beneath an elevated structure on the right, with two same-direction lanes, a marked shoulder, no median, and dry, smooth pavement; traffic is light. Ahead in the ego lane, a small black kei car travels slowly, constraining the ego vehicle's pace. Farther ahead in the same lane, a silver sedan is stopped at a red traffic light, forming the head of a short queue. In the adjacent right lane, a white car proceeds steadily away from the camera and does not impede the ego lane.", "hazard_reasoning": "There is a silver sedan stopped in the ego lane, because of the red traffic light. The driver should stop immediately to avoid colliding with the silver sedan stopped at the red light."}
{"id": "train_03843", "split": "train", "clip_key": "titan_clip_1170_000138_movie", "source": {"subset": "titan", "scenario": "clip_1170", "frame": "000138"}, "frames": ["titan_clip_1170_000138_movie_t-3.jpg", "titan_clip_1170_000138_movie_t-2.jpg", "titan_clip_1170_000138_movie_t-1.jpg", "titan_clip_1170_000138_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of pedestrian walking in roadway", "environment_perception": "An urban commercial alley with brick paving and a single narrow shared lane has no median and curves slightly right ahead; vehicle flow is light while foot traffic is dense. Ahead in the middle of the lane, a pedestrian in a blue shirt walks away from the camera amid the busy crowd, occupying the ego path. Farther ahead in the same lane, a cyclist rides away along the center, likely constraining speed. On the right edge by storefronts, several pedestrians walk along the curb and drift near the lane, so their movements may encroach on the path. Large columns and recessed entrances on the left create partial sightlines along the sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking in the middle of the road, away from the ego car, because the street is packed. The driver should be aware because this pedestrian walking in the roadway may change direction and enter the vehicle's path."}
{"id": "train_03844", "split": "train", "clip_key": "titan_clip_1006_000498_movie", "source": {"subset": "titan", "scenario": "clip_1006", "frame": "000498"}, "frames": ["titan_clip_1006_000498_movie_t-3.jpg", "titan_clip_1006_000498_movie_t-2.jpg", "titan_clip_1006_000498_movie_t-1.jpg", "titan_clip_1006_000498_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban side street with brick paving and no visible lane markings runs between tall buildings toward a zebra crosswalk; the surface appears good and motor traffic is light. On the right edge near the ego vehicle, a pedestrian in a black shirt walks toward the camera along the roadway, having stepped off the sidewalk because another pedestrian occupies it, and he approaches the vehicle's line of travel. Ahead in the lane, a woman in a light dress walks away from the ego vehicle near the center of the road, constraining the approach speed. At the upcoming crosswalk, several pedestrians move across from left to right and could occupy the ego lane. A white van is stopped at the left curb with its body encroaching slightly into the lane, and construction hoarding with cones on the right narrows the sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and walking on the right side of the road, towards the ego car, because of a pedestrian walking on the sidewalk. The driver should be aware of the pedestrian ahead as they may step into the vehicle's path unexpectedly."}
{"id": "train_03845", "split": "train", "clip_key": "2020-0213-143552_056006_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "056006"}, "frames": ["2020-0213-143552_056006_movie_t-3.jpg", "2020-0213-143552_056006_movie_t-2.jpg", "2020-0213-143552_056006_movie_t-1.jpg", "2020-0213-143552_056006_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated structure with smooth pavement, two same-direction lanes, and narrow yellow channelization plus a small raised median on the right; traffic is moderate and flows steadily toward a signalized junction ahead. A gray box truck directly ahead in the ego lane drives away from the camera at a steady pace, effectively setting the ego vehicle's speed. To the right, a white van in the adjacent lane proceeds straight slightly ahead, remaining separated by the median and not entering the ego lane. Farther right ahead, a dark minivan in the same adjacent lane continues forward in parallel without affecting the ego path.", "hazard_reasoning": "There is a gray truck driving in the ego lane away from the ego car. You should be aware of the truck ahead to anticipate any sudden slowdowns."}
{"id": "train_03846", "split": "train", "clip_key": "titan_clip_457_000498_movie", "source": {"subset": "titan", "scenario": "clip_457", "frame": "000498"}, "frames": ["titan_clip_457_000498_movie_t-3.jpg", "titan_clip_457_000498_movie_t-2.jpg", "titan_clip_457_000498_movie_t-1.jpg", "titan_clip_457_000498_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van ahead", "environment_perception": "An urban side street with tall buildings and no centerline runs straight on smooth asphalt, and traffic is light with no moving vehicles. The ego-vehicle advances in a single shared lane while a large Pepsi delivery truck stands on the near right, stopped and protruding into the roadway, narrowing the passage. Farther ahead, a white van is parked on the right side of the street and further constricts the corridor. A pedestrian ahead on the right walks away along the curb past the vans and stays near the travel path. Small signs and cones line the left sidewalk but do not intrude into the lane.", "hazard_reasoning": "There is a white van parked on the right side of the street. The parked vehicle reduces available road space and may require cautious passing, so the driver should be aware."}
{"id": "train_03847", "split": "train", "clip_key": "titan_clip_1271_000216_movie", "source": {"subset": "titan", "scenario": "clip_1271", "frame": "000216"}, "frames": ["titan_clip_1271_000216_movie_t-3.jpg", "titan_clip_1271_000216_movie_t-2.jpg", "titan_clip_1271_000216_movie_t-1.jpg", "titan_clip_1271_000216_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban neighborhood street without a center divider is ahead, the asphalt smooth and dry and vehicular traffic light with no oncoming cars visible. Ahead in the ego lane, three pedestrians wearing black pants and backpacks walk together in the middle of the road away from the car, occupying the lane and constraining its pace. On the right, a pedestrian stands near the edge by planters and shops, staying out of the lane. Parked bicycles line the left side, and a freestanding caf sign and raised planters on the right further narrow the usable roadway.", "hazard_reasoning": "There are three pedestrians talking in a group, wearing black pants and backpacks, walking in the middle of the road away from the ego car. They occupy the driving lane and may change direction without warning, so the driver should slow down to avoid a potential collision."}
{"id": "train_03848", "split": "train", "clip_key": "titan_clip_124_000342_movie", "source": {"subset": "titan", "scenario": "clip_124", "frame": "000342"}, "frames": ["titan_clip_124_000342_movie_t-3.jpg", "titan_clip_124_000342_movie_t-2.jpg", "titan_clip_124_000342_movie_t-1.jpg", "titan_clip_124_000342_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban downtown scene shows a narrow two-way street approaching a four-way intersection with zebra crosswalks, no visible signal, and light traffic; pavement is clean. A pedestrian wearing a black skirt is directly ahead in the middle of the intersection, crossing toward the left side across the ego vehicle's path, constraining its approach. On the right curb, a person holding an umbrella waits at the crosswalk and could step out into the lane. Across the junction, a small truck moves along the cross street from left to right at low speed, remaining on that street and posing no immediate conflict.", "hazard_reasoning": "There is a pedestrian wearing a black skirt, crossing the street, and walking in the middle of the intersection, to the left side. The driver should slow down to safely yield to the pedestrian and prevent a collision."}
{"id": "train_03849", "split": "train", "clip_key": "titan_clip_342_000840_movie", "source": {"subset": "titan", "scenario": "clip_342", "frame": "000840"}, "frames": ["titan_clip_342_000840_movie_t-3.jpg", "titan_clip_342_000840_movie_t-2.jpg", "titan_clip_342_000840_movie_t-1.jpg", "titan_clip_342_000840_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "A narrow urban shopping street with cobblestone paving serves as a single unmarked lane with no median, and traffic is light and slow. On the left edge, pedestrians move along the storefronts; a pedestrian wearing black pants and a white shirt walks away from the ego car on the left side, close to the travel path and reducing clearance. Ahead in the center, a white van approaches as oncoming traffic at low speed, negotiating the constricted space. On the right, a tarpaulin-covered truck is stopped at the curb facing the same direction as the ego vehicle, its rear protruding into the lane and creating a bottleneck.", "hazard_reasoning": "A pedestrian wearing black pants and a white shirt is walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian due to the limited visibility caused by the parked truck and the pedestrian's proximity to the vehicle's path."}
{"id": "train_03850", "split": "train", "clip_key": "2020-0204-150838_056177_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "056177"}, "frames": ["2020-0204-150838_056177_movie_t-3.jpg", "2020-0204-150838_056177_movie_t-2.jpg", "2020-0204-150838_056177_movie_t-1.jpg", "2020-0204-150838_056177_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided roadway runs beneath elevated expressway ramps, with two same-direction lanes and guardrails on both sides; the pavement is smooth and traffic is light. A silver coach bus travels ahead in the ego lane moving away from the camera, setting the immediate pace. To the right, a white van in the adjacent lane runs alongside slightly ahead without indicating any merge toward the ego lane. Farther ahead in the right lane, a truck proceeds at a distance with no interaction. A blue Route 357 sign on the left points straight ahead.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03851", "split": "train", "clip_key": "titan_clip_317_000282_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_317_000282_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_317_000282_movie_t-3_augB1.jpg", "titan_clip_317_000282_movie_t-2_augB1.jpg", "titan_clip_317_000282_movie_t-1_augB1.jpg", "titan_clip_317_000282_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with no marked centerline and smooth pavement is shown, with light traffic as the ego car proceeds along a single lane past storefronts. Ahead on the left edge a white van is stopped with its rear hatch open; a person carrying a handbag stands beside it, touching the open door while unloading, and the van partly intrudes into the ego lane. Farther ahead in the same direction a dark car moves slowly beyond a zebra crossing. Pedestrians are present on both sidewalks; one near the right curb walks toward the crosswalk while others linger by shops on the left. A zebra crossing spans the road under a decorative arch, and the open van and nearby person form the main roadside obstruction.", "hazard_reasoning": "There is a person carrying a handbag, touching an open van door, and standing on the left side of the road because they are unloading the van. The driver should slow down because the pedestrian unloading the van may step into the lane unexpectedly under this situation, creating a collision risk."}
{"id": "train_03852", "split": "train", "clip_key": "2020-0210-101957_056647_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "056647"}, "frames": ["2020-0210-101957_056647_movie_t-3.jpg", "2020-0210-101957_056647_movie_t-2.jpg", "2020-0210-101957_056647_movie_t-1.jpg", "2020-0210-101957_056647_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction runs past mid-rise buildings, bordered by guardrails; the asphalt looks smooth and traffic moves at a moderate, steady flow. A white truck ahead in the ego lane drives away from the ego car at a steady pace and constrains the ego vehicle's pace. To its right, a black car slightly ahead in the adjacent lane continues straight under the footbridge, remaining in its lane. Farther ahead, several same-direction vehicles travel in both lanes toward the overpass with even spacing. A pedestrian overpass spans the roadway ahead, and no signals or hazards are apparent.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The truck may brake unexpectedly or change speed, so the driver should be aware of its movements."}
{"id": "train_03853", "split": "train", "clip_key": "titan_clip_791_000048_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_791_000048_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_791_000048_movie_t-3_augB1.jpg", "titan_clip_791_000048_movie_t-2_augB1.jpg", "titan_clip_791_000048_movie_t-1_augB1.jpg", "titan_clip_791_000048_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian waving", "environment_perception": "An urban two-way street with one lane each direction has smooth pavement, no median, and light traffic. On the left edge ahead, a helmeted pedestrian waves an orange baton and walks backward, signaling the ego vehicle to proceed while directing traffic close to the lane. Ahead to the right in the oncoming lane, a small white truck and another light vehicle wait near the curb, narrowing the available width and influencing the ego car's pace. Metal guardrails line both sides, creating a confined corridor.", "hazard_reasoning": "There is a pedestrian wearing a helmet, waving the ego car forward with an orange baton, and walking backward, on the left side of the road. Their gesturing and backward movement are unpredictable, so be aware of their actions."}
{"id": "train_03854", "split": "train", "clip_key": "2020-0207-101955_111070_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "111070"}, "frames": ["2020-0207-101955_111070_movie_t-3.jpg", "2020-0207-101955_111070_movie_t-2.jpg", "2020-0207-101955_111070_movie_t-1.jpg", "2020-0207-101955_111070_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated roadway and a pedestrian bridge, with three same-direction lanes on dry, well-kept pavement and heavy stop-and-go flow. A blue sedan directly ahead in the ego lane slows as a large box truck from the left begins merging into the ego lane just in front of it, constraining the ego vehicle's pace. The white box truck ahead-left shifts rightward across the lane line to enter the lane, reducing the available gap. To the right, a small flatbed truck creeps alongside in the adjacent lane amid a queue of cars, leaving little lateral space.", "hazard_reasoning": "There is a blue sedan slowing in the ego lane, in front of the ego car, because a truck is lane changing into the ego lane. The blue sedan is decelerating due to a merging truck, increasing the risk of a collision if speed is not reduced promptly."}
{"id": "train_03855", "split": "train", "clip_key": "titan_clip_1180_000252_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1180_000252_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1180_000252_movie_t-3_augB1.jpg", "titan_clip_1180_000252_movie_t-2_augB1.jpg", "titan_clip_1180_000252_movie_t-1_augB1.jpg", "titan_clip_1180_000252_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way, two-lane road with no median and smooth pavement is shown, and traffic is light. Ahead in the left-hand ego lane, a cyclist in a white shirt with a green bag rides in the middle of the road, moving away from the ego because a small truck is stopped along the left curb, and the bicycle temporarily constrains the pace. The small box truck remains stationary near the crosswalk, narrowing the lane. An oncoming white car approaches in the opposite lane and passes without deviating. The traffic signal ahead shows green for through movement.", "hazard_reasoning": "There is a cyclist wearing a white shirt, carrying a green bag, cycling in the middle of the road, away from the ego car, because of the parked vehicle. The cyclist is riding in the travel lane to avoid the parked vehicle and may cross into your path, so slow down to avoid a collision."}
{"id": "train_03856", "split": "train", "clip_key": "2020-0221-115122_005916_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "005916"}, "frames": ["2020-0221-115122_005916_movie_t-3.jpg", "2020-0221-115122_005916_movie_t-2.jpg", "2020-0221-115122_005916_movie_t-1.jpg", "2020-0221-115122_005916_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial lined with tall buildings carries heavy stop-and-go traffic on a dry, well-paved surface, with same-direction queues filling several lanes and no median visible. Traffic remains stalled. Directly ahead in the ego lane a silver sedan is stopped because congestion blocks the road, and it constrains the ego vehicle's movement. To the right, a white hatchback creeps forward slightly ahead in the adjacent lane, staying parallel to the ego and limiting any lane change. Farther ahead and to the right, a line of vans inches forward within their lane toward an intersection, contributing to the jam that holds the lead car.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver needs to stop to avoid colliding with the halted vehicle ahead."}
{"id": "train_03857", "split": "train", "clip_key": "titan_clip_645_000390_movie", "source": {"subset": "titan", "scenario": "clip_645", "frame": "000390"}, "frames": ["titan_clip_645_000390_movie_t-3.jpg", "titan_clip_645_000390_movie_t-2.jpg", "titan_clip_645_000390_movie_t-1.jpg", "titan_clip_645_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian", "environment_perception": "An urban two-way street with a single narrow lane per direction and no median, smooth pavement, and light traffic passes between shopfronts; a green shoulder lines the left edge. An oncoming yellow hatchback approaches in its lane to the right and continues straight past the ego vehicle, tightening lateral clearance. On the left edge of the road, a pedestrian walks away from the ego car because there is no sidewalk, staying near the painted shoulder and potentially near the travel lane. Farther ahead on the left, a woman holding an umbrella walks along the curb in the same direction, remaining close to the edge and relevant as she could step toward the lane.", "hazard_reasoning": "There is a pedestrian walking on the left side of the road away from the ego car because there is no sidewalk. The pedestrian may unexpectedly enter the driving lane, so the driver should be aware."}
{"id": "train_03858", "split": "train", "clip_key": "2020-0205-103411_112890_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "112890"}, "frames": ["2020-0205-103411_112890_movie_t-3.jpg", "2020-0205-103411_112890_movie_t-2.jpg", "2020-0205-103411_112890_movie_t-1.jpg", "2020-0205-103411_112890_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes each way and no median stretches ahead, the asphalt slightly worn, and traffic flows moderately under clear skies as the signal ahead shows green. A white van travels directly ahead in the ego lane and continues through the intersection on the green, setting the ego car's pace. To its left, a dark kei car in the adjacent same-direction lane rolls forward at a similar speed. On the right side, an oncoming box truck approaches in its lane near the centerline and proceeds past without encroaching.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane, because of the green traffic light. The van's movement indicates the signal has changed and may change again, so the driver should follow the vehicle ahead to maintain safe distance and anticipate its speed."}
{"id": "train_03859", "split": "train", "clip_key": "2020-0227-153144_042113_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "042113"}, "frames": ["2020-0227-153144_042113_movie_t-3.jpg", "2020-0227-153144_042113_movie_t-2.jpg", "2020-0227-153144_042113_movie_t-1.jpg", "2020-0227-153144_042113_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction, no median, and smooth pavement carries moderate, steady traffic through an intersection, with oncoming vehicles flowing in the opposite lanes to the right. The white van directly ahead in the ego lane accelerates away, opening a small gap. To its right, a small work truck remains stopped at the crosswalk in the adjacent same-direction lane, occupying much of that lane and limiting movement there. Farther ahead on the left, a motorcycle moves along the curbside lane and continues straight through the intersection, possibly merging in front of the van.", "hazard_reasoning": "There's a white van accelerating ahead of the ego-car, in the ego-car lane. The driver should follow the vehicle ahead to maintain safe distance in case of sudden braking."}
{"id": "train_03860", "split": "train", "clip_key": "2020-0226-101332_072836_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "072836"}, "frames": ["2020-0226-101332_072836_movie_t-3.jpg", "2020-0226-101332_072836_movie_t-2.jpg", "2020-0226-101332_072836_movie_t-1.jpg", "2020-0226-101332_072836_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for the halted van at red light", "environment_perception": "An urban arterial with three same-direction lanes runs between tall buildings, the pavement smooth and traffic moderate. A small truck ahead in the ego lane proceeds toward the next intersection and sets the pace. A silver van is in the right adjacent lane near the camera and continues forward, not stopped in front of the ego vehicle. Farther ahead, another van and several cars in the middle and left lanes move steadily with modest gaps. Parked service vehicles line the left curb but stay clear of the travel lanes. Distant traffic signals hang over the road, though their aspects are not clearly visible.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should prepare to stop to avoid colliding with the stationary van at the red light, as sudden braking may be required."}
{"id": "train_03861", "split": "train", "clip_key": "titan_clip_1066_000252_movie", "source": {"subset": "titan", "scenario": "clip_1066", "frame": "000252"}, "frames": ["titan_clip_1066_000252_movie_t-3.jpg", "titan_clip_1066_000252_movie_t-2.jpg", "titan_clip_1066_000252_movie_t-1.jpg", "titan_clip_1066_000252_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban back street with no centerline climbs gently and bends slightly left between close-set buildings; a metal railing protects a raised sidewalk on the right, and the pavement looks smooth. Traffic is light with no vehicles visible in the same direction or oncoming. Two pedestrians ahead on the right walk away along the sidewalk behind the railing, remaining outside the travel lane and not affecting the car's pace. The bend and close walls limit forward sight near the small opening between buildings at the end.", "hazard_reasoning": "No immediate hazards are present; the driver can maintain the current speed and stay alert."}
{"id": "train_03862", "split": "train", "clip_key": "titan_clip_715_000060_movie", "source": {"subset": "titan", "scenario": "clip_715", "frame": "000060"}, "frames": ["titan_clip_715_000060_movie_t-3.jpg", "titan_clip_715_000060_movie_t-2.jpg", "titan_clip_715_000060_movie_t-1.jpg", "titan_clip_715_000060_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with no marked lanes or median, bordered by shops, has intact asphalt and very light vehicular traffic but heavy pedestrian activity as the ego car approaches an unsignalized intersection. A small group of pedestrians ahead in the middle of the road walks toward the ego vehicle and constrains its pace; among them, a pedestrian in a brown shirt is centered and moving directly toward the car. Another pedestrian steps in from the left edge and continues across the ego path. Farther ahead, more pedestrians walk along and across near the right-side storefronts, some drifting outward into the lane. A convex safety mirror and a line of roadside cones are visible at the corner.", "hazard_reasoning": "There is a pedestrian wearing a brown shirt, walking in the middle of the road, towards the ego car. The driver should slow down because a person is directly ahead and may continue crossing into the vehicle's path."}
{"id": "train_03863", "split": "train", "clip_key": "2020-0214-145407_068246_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "068246"}, "frames": ["2020-0214-145407_068246_movie_t-3.jpg", "2020-0214-145407_068246_movie_t-2.jpg", "2020-0214-145407_068246_movie_t-1.jpg", "2020-0214-145407_068246_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a shrub median divides directions; the ego travels in the right of two same-direction lanes on smooth pavement amid heavy, stop-and-go traffic. A white sedan directly ahead in the ego lane starts rolling as the queue moves, controlling the ego vehicle's pace. Farther ahead in the same lane, a small white van and a taller van creep toward the junction, keeping the queue compressed. To the left, a white coupe advances parallel near the ego, narrowing lateral space but remaining in its lane. On the opposite side beyond the median, oncoming vehicles move steadily. A signalized intersection is visible up the road.", "hazard_reasoning": "There is a white sedan starting to move in front of the ego car, in the ego lane, because traffic ahead is moving. The sedan was previously stopped and is now accelerating, so the driver should also start moving to maintain safe distance and traffic flow."}
{"id": "train_03864", "split": "train", "clip_key": "2020-0218-103119_000482_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "000482"}, "frames": ["2020-0218-103119_000482_movie_t-3.jpg", "2020-0218-103119_000482_movie_t-2.jpg", "2020-0218-103119_000482_movie_t-1.jpg", "2020-0218-103119_000482_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road with no physical median; the dry pavement leads to a signalized intersection ahead and traffic is light. A white van ahead in the ego lane drives away from the camera, keeping straight and setting the immediate pace. A rider on a small mobility scooter ahead-left proceeds straight near the lane line, moving slowly and possibly edging toward the ego lane. On the right at the crosswalk, several pedestrians and cyclists wait near the curb and may enter the crossing. Strong sun glare from the upper left slightly washes out the view approaching the junction.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. You should follow the vehicle ahead because it will stop at the red light and maintaining its pace ensures you brake in time at the intersection."}
{"id": "train_03865", "split": "train", "clip_key": "2020-0129-144857_021640_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "021640"}, "frames": ["2020-0129-144857_021640_movie_t-3.jpg", "2020-0129-144857_021640_movie_t-2.jpg", "2020-0129-144857_021640_movie_t-1.jpg", "2020-0129-144857_021640_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-lane one-way road runs under an elevated structure, the asphalt dry and intact, with moderate same-direction flow. The ego car travels in the left of the two lanes. A black sedan ahead in the ego lane slows as a small white hatchback from the adjacent left lane cuts into the ego lane in front of it, briefly compressing the ego vehicle's pace. A white minivan stands stopped at the curb on the right near a side street and remains outside the travel lane. A chevron sign on a small right-side island marks the junction while overhead gantries appear farther ahead.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because a vehicle ahead is cutting into the ego lane. Slow down to maintain safe distance behind the sedan."}
{"id": "train_03866", "split": "train", "clip_key": "titan_clip_1270_000534_movie", "source": {"subset": "titan", "scenario": "clip_1270", "frame": "000534"}, "frames": ["titan_clip_1270_000534_movie_t-3.jpg", "titan_clip_1270_000534_movie_t-2.jpg", "titan_clip_1270_000534_movie_t-1.jpg", "titan_clip_1270_000534_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian ahead", "environment_perception": "A narrow urban two-way street with a single shared lane runs between buildings; the asphalt is smooth and traffic is light. A pedestrian wearing a white shirt walks toward the ego vehicle along the left edge of the road, close to the travel path and potentially entering the lane. Another pedestrian farther ahead continues on the left side moving away and staying clear of traffic. A small car is visible ahead in the same lane moving away in the distance. A white van stands parked on the right by a building, and bicycles are parked outside shops on the left, slightly narrowing the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the left side of the road, towards the ego car. The pedestrian could enter the vehicle's path unexpectedly, so the driver should be aware of their proximity."}
{"id": "train_03867", "split": "train", "clip_key": "2020-0207-151349_028463_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "028463"}, "frames": ["2020-0207-151349_028463_movie_t-3.jpg", "2020-0207-151349_028463_movie_t-2.jpg", "2020-0207-151349_028463_movie_t-1.jpg", "2020-0207-151349_028463_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane boulevard with a planted median and good pavement runs through tall buildings, and traffic flows at a moderate, steady pace under strong sun glare. A white box truck ahead in the ego lane pulls away as traffic ahead moves, increasing the gap to the ego car. A white hatchback slightly ahead in the right adjacent lane travels straight at a similar speed alongside the ego lane, affecting spacing on the right. Farther ahead in the middle lanes, a large bus proceeds with the flow through the junction, contributing to the moving queue. An overhead traffic signal controls the intersection ahead, and the median separates oncoming traffic on the far side.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because traffic ahead is moving. The driver should follow the vehicle ahead to maintain a safe distance and avoid potential collisions if it slows unexpectedly."}
{"id": "train_03868", "split": "train", "clip_key": "titan_clip_540_000282_movie", "source": {"subset": "titan", "scenario": "clip_540", "frame": "000282"}, "frames": ["titan_clip_540_000282_movie_t-3.jpg", "titan_clip_540_000282_movie_t-2.jpg", "titan_clip_540_000282_movie_t-1.jpg", "titan_clip_540_000282_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the stopped truck", "environment_perception": "A narrow urban street with a single lane and no center divider runs between storefronts, the pavement smooth and traffic light. A white truck is stopped along the left side ahead in front of the ego-car, partly occupying the lane and constraining the approach. Two pedestrians on the right edge near the camera walk toward the ego vehicle along the curb, close to the roadway and potentially encroaching on the lane. Another pedestrian farther ahead on the right walks away past the truck, staying near the side. Parked scooters and bicycles and small cones and bollards line the left storefront area, further narrowing the passage.", "hazard_reasoning": "There is a white truck stopped, on the left side of the road, in front of the ego-car. The driver should maneuver around the stopped truck to avoid collision and maintain safe travel."}
{"id": "train_03869", "split": "train", "clip_key": "titan_clip_512_000018_movie", "source": {"subset": "titan", "scenario": "clip_512", "frame": "000018"}, "frames": ["titan_clip_512_000018_movie_t-3.jpg", "titan_clip_512_000018_movie_t-2.jpg", "titan_clip_512_000018_movie_t-1.jpg", "titan_clip_512_000018_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene on a narrow two-way street with smooth pavement and no median; traffic is light. The ego vehicle proceeds along the left side. Far ahead in the same direction, a white van travels straight and gradually recedes, the only moving vehicle. No oncoming traffic appears. A parked bicycle and metal guardrails line the right sidewalk but stay clear of the lane. No signals or legible speed signs are visible, and no pedestrians enter the roadway.", "hazard_reasoning": "Since there are no immediate hazards detected, maintain normal driving behavior and remain attentive to road users."}
{"id": "train_03870", "split": "train", "clip_key": "titan_clip_149_000402_movie", "source": {"subset": "titan", "scenario": "clip_149", "frame": "000402"}, "frames": ["titan_clip_149_000402_movie_t-3.jpg", "titan_clip_149_000402_movie_t-2.jpg", "titan_clip_149_000402_movie_t-1.jpg", "titan_clip_149_000402_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrians in crosswalk", "environment_perception": "An urban street by office buildings, the ego approaches a narrow two-way road without a median; the pavement is smooth and traffic is light with no moving vehicles. At the zebra crossing directly ahead, two pedestrians in brown shirts and black pants come from the right and walk left across the lane at a steady pace, occupying the vehicle's path so the ego yields. No other notable traffic or control signals are visible.", "hazard_reasoning": "There are two pedestrians wearing brown shirts and black pants, crossing the street at the pedestrian crossing, from the right side to the left side. The driver should stop to yield to these pedestrians and ensure their safe passage across the crosswalk."}
{"id": "train_03871", "split": "train", "clip_key": "2020-0207-151349_019349_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "019349"}, "frames": ["2020-0207-151349_019349_movie_t-3.jpg", "2020-0207-151349_019349_movie_t-2.jpg", "2020-0207-151349_019349_movie_t-1.jpg", "2020-0207-151349_019349_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes shows smooth pavement, a concrete median on the right, and a fenced sidewalk on the left; traffic is moderate with brief slowdowns. A white box truck is directly ahead in the ego lane and slows, constraining the ego car's pace. In the adjacent right lane, a dark SUV runs slightly ahead and continues straight, limiting an immediate lane change. Farther ahead in the right lane, several cars proceed in the same direction with tight gaps. On the far left, a cyclist rides forward behind the guardrail parallel to traffic and remains separated. Strong sunlight from the upper left causes glare across parts of the scene.", "hazard_reasoning": "There is a white truck slowing in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_03872", "split": "train", "clip_key": "2020-0225-145150_020596_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "020596"}, "frames": ["2020-0225-145150_020596_movie_t-3.jpg", "2020-0225-145150_020596_movie_t-2.jpg", "2020-0225-145150_020596_movie_t-1.jpg", "2020-0225-145150_020596_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down for congestion ahead", "environment_perception": "An urban multi-lane arterial with two same-direction lanes and a painted chevron zone to the right runs through a commercial district; the pavement is dry and smooth, and traffic is moderate with bunching near an overhead gantry. A gray van directly ahead in the ego lane slows as the queue forms, constraining the ego car's pace because of congestion ahead. A white van in the adjacent right lane travels slightly ahead at a steady speed without signaling a merge. Farther right by the curb outside shops, a dark car is stopped near a driveway and remains out of the lane. An overhead electronic sign spans the road, and a no-U-turn sign stands on the left verge.", "hazard_reasoning": "There is a gray van slowing down in front of the ego-car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the congested traffic ahead."}
{"id": "train_03873", "split": "train", "clip_key": "2020-0210-101957_066293_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "066293"}, "frames": ["2020-0210-101957_066293_movie_t-3.jpg", "2020-0210-101957_066293_movie_t-2.jpg", "2020-0210-101957_066293_movie_t-1.jpg", "2020-0210-101957_066293_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-lane road with both lanes in the same direction runs between apartments and trees; the pavement is clean and traffic is slow in a short queue. A small white van is directly ahead in the ego lane and remains stopped, blocking the lane and keeping the ego car halted. In the right lane, a white car farther ahead edges forward while a dark car alongside queues beside the ego vehicle. An overhead blue guide sign indicates a T-intersection ahead with a right turn.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car. The driver should stop to avoid rear-ending the stopped van."}
{"id": "train_03874", "split": "train", "clip_key": "2020-0203-154554_008669_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "008669"}, "frames": ["2020-0203-154554_008669_movie_t-3.jpg", "2020-0203-154554_008669_movie_t-2.jpg", "2020-0203-154554_008669_movie_t-1.jpg", "2020-0203-154554_008669_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to merging minivan", "environment_perception": "An urban multi-lane arterial leads into a wide signalized intersection with clear crosswalks and hatched dividers; pavement looks good and traffic is moderate with steady opposing flow on the right side. A black van ahead in the ego lane rolls into the intersection, limiting the ego car's approach speed. A gray minivan is in the middle of the intersection angling into the rightmost lane toward the ego vehicle and may enter the ego lane. Two pedestrians wait at the right curb beside the crosswalk, remaining on the sidewalk.", "hazard_reasoning": "There is a gray minivan driving in the middle of the intersection into the right lane, towards the ego-car. The minivan's unexpected merge into the ego-vehicle's path creates a collision risk, so the driver should yield to avoid impact."}
{"id": "train_03875", "split": "train", "clip_key": "titan_clip_1009_000114_movie", "source": {"subset": "titan", "scenario": "clip_1009", "frame": "000114"}, "frames": ["titan_clip_1009_000114_movie_t-3.jpg", "titan_clip_1009_000114_movie_t-2.jpg", "titan_clip_1009_000114_movie_t-1.jpg", "titan_clip_1009_000114_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield for the pedestrian on the right.", "environment_perception": "A narrow urban side street with a single unmarked lane runs between shops, the pavement smooth and traffic very light with one vehicle far ahead. A man in a white shirt and black pants walks away from the ego car along the right side of the road, close to the lane. Another pedestrian ahead near the center of the lane walks away, constraining the ego vehicle's pace. On the left, several pedestrians linger by storefront signboards and one steps from the curb toward the lane, potentially entering the path. A small white van appears stopped in the distance in the same lane. A blue pedestrian sign is posted on the left, while bollards, bicycles, and advertising boards narrow the roadway.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, and walking away from the ego car, on the right side of the road. The pedestrian walking near and potentially into the lane may step into the vehicle's path unexpectedly, so the driver should yield."}
{"id": "train_03876", "split": "train", "clip_key": "2020-0220-151845_005655_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "005655"}, "frames": ["2020-0220-151845_005655_movie_t-3.jpg", "2020-0220-151845_005655_movie_t-2.jpg", "2020-0220-151845_005655_movie_t-1.jpg", "2020-0220-151845_005655_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist", "environment_perception": "An urban side street with a single narrow carriageway curves right beside a large building, with no center line and smooth asphalt; traffic is light with no vehicle ahead in the ego lane. White guardrails and construction hoarding line both sides, channeling the road into a blind right-hand bend. No pedestrians or cyclists are visible, and there is no oncoming traffic within view. A roadside sign stands near the bend, and a gated opening lies on the left.", "hazard_reasoning": "There is a cyclist carrying a backpack and cycling on the left side of the road, away from the ego car. Be aware of the cyclist as they may move closer or change direction unexpectedly."}
{"id": "train_03877", "split": "train", "clip_key": "titan_clip_689_000324_movie", "source": {"subset": "titan", "scenario": "clip_689", "frame": "000324"}, "frames": ["titan_clip_689_000324_movie_t-3.jpg", "titan_clip_689_000324_movie_t-2.jpg", "titan_clip_689_000324_movie_t-1.jpg", "titan_clip_689_000324_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with an undivided roadway and no centerline runs between shops; the pavement is dry and intact, and vehicular traffic is light with no oncoming cars visible. Ahead in the middle of the road, a pedestrian wearing a black shirt and a backpack walks away from the ego car, occupying the lane and constraining pace. To the right near the storefronts, another pedestrian walks toward the camera along the curb and may step into the lane. Farther ahead near the left edge, a person continues along the side of the roadway without entering the lane. Shop signs and cones protrude into the roadway, narrowing usable space.", "hazard_reasoning": "A pedestrian wearing a black shirt and backpack is walking in the middle of the road, away from the ego car. The pedestrian's position in the travel lane presents a collision hazard, so the driver should slow down to maintain a safe reaction distance."}
{"id": "train_03878", "split": "train", "clip_key": "2020-0213-143552_082652_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "082652"}, "frames": ["2020-0213-143552_082652_movie_t-3.jpg", "2020-0213-143552_082652_movie_t-2.jpg", "2020-0213-143552_082652_movie_t-1.jpg", "2020-0213-143552_082652_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway segment runs under an overpass with tall sound barriers, a single through lane in the ego direction and a narrow side lane on the right separated by bollards; pavement is smooth and traffic is light. Ahead to the right in the segregated side lane, a blue truck faces the camera and waits behind the bollards, close to but outside the ego path. No vehicles are immediately ahead in the ego lane, and no oncoming traffic is visible. The divider posts and tight walls create a constrained corridor while the road curves gently left into daylight.", "hazard_reasoning": "There is a blue truck driving in the ego lane away from the ego car. The truck obscures the slight curve ahead, so the driver should be aware of the obscured road to anticipate any hazards."}
{"id": "train_03879", "split": "train", "clip_key": "titan_clip_1301_000522_movie", "source": {"subset": "titan", "scenario": "clip_1301", "frame": "000522"}, "frames": ["titan_clip_1301_000522_movie_t-3.jpg", "titan_clip_1301_000522_movie_t-2.jpg", "titan_clip_1301_000522_movie_t-1.jpg", "titan_clip_1301_000522_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street with a single narrow shared lane on stone pavement has no median and very light moving traffic while delivery trucks remain stopped. Clearance is tight but the path ahead is otherwise open. On the left beside the ego path, a worker in a blue shirt and blue pants stands at a Coca-Cola delivery truck handling metal tanks, occupying part of the lane and reducing space to pass. Farther ahead in the same direction, another box truck is stopped in the lane and constrains progress. On the right edge, a cluster of pedestrians with umbrellas linger near the curb and face the roadway, potentially stepping into the path. Short bollards line the right curb and channel vehicles through the narrow gap.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and blue pants, and standing on the left side of the road because he is handling metal tanks inside a delivery truck. The pedestrian's close proximity to moving traffic and the unloading activity increase collision risk, so the driver should slow down under this situation."}
{"id": "train_03880", "split": "train", "clip_key": "2020-0203-154554_068584_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "068584"}, "frames": ["2020-0203-154554_068584_movie_t-3.jpg", "2020-0203-154554_068584_movie_t-2.jpg", "2020-0203-154554_068584_movie_t-1.jpg", "2020-0203-154554_068584_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Slow down and keep a safe distance.", "environment_perception": "An urban multi-lane two-way street with no physical median and dry pavement is lined by mid-rise buildings and trees, and traffic is moderate as the car approaches a signalized intersection. In the ego lane ahead, a motorcyclist in a black jacket and helmet rides straight at moderate speed, briefly setting the pace for the ego vehicle. Slightly farther ahead in the same lane, another scooter continues straight among several cars, maintaining its lane and gap. On the left near the curb, a bicyclist waits by the sidewalk at the crossing and stays out of the roadway. In the opposite lanes to the right, oncoming cars travel toward the ego vehicle.", "hazard_reasoning": "There is a cyclist wearing a black jacket and helmet, cycling in a motorbike, in the ego lane. Slow down and keep a safe distance because the cyclist is vulnerable and may change position unexpectedly."}
{"id": "train_03881", "split": "train", "clip_key": "titan_clip_906_000378_movie", "source": {"subset": "titan", "scenario": "clip_906", "frame": "000378"}, "frames": ["titan_clip_906_000378_movie_t-3.jpg", "titan_clip_906_000378_movie_t-2.jpg", "titan_clip_906_000378_movie_t-1.jpg", "titan_clip_906_000378_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban residential two-way road with edge lines and no center divider curves left ahead; the pavement looks slightly worn and traffic is light. A small white van travels ahead in the ego lane near the bend, moving slowly and effectively setting the pace. A cyclist wearing a checkered shirt and shorts approaches along the right side toward the ego car, keeping to the edge but reducing passing space as he nears the van. A white car is parked along the left shoulder beside a vending machine, further constricting the lane near the ego vehicle. High walls and closely spaced houses create a confined corridor with limited sight through the upcoming curve.", "hazard_reasoning": "There is a cyclist wearing a checkered shirt and shorts, cycling along the right side of the road, toward the ego car. The driver should slow down because the cyclist is traveling ahead in your lane and may change speed or path unexpectedly around the upcoming curve."}
{"id": "train_03882", "split": "train", "clip_key": "2020-0228-102841_001471_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "001471"}, "frames": ["2020-0228-102841_001471_movie_t-3.jpg", "2020-0228-102841_001471_movie_t-2.jpg", "2020-0228-102841_001471_movie_t-1.jpg", "2020-0228-102841_001471_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban backstreet with a single shared two-way lane and no center line runs straight ahead between dense shopfronts; the pavement is intact with utility covers, and traffic is light. Ahead on the right edge, a pedestrian wearing a dark-purple coat and beige pants walks away from the ego car along the curb and stays close to the travel path. Beside him, another pedestrian slightly left of the curb drifts toward the lane before continuing forward, briefly constraining the ego's pace. Far ahead an oncoming black van moves toward the camera near the middle of the street, reducing the passing space on this tight road. Bicycles are parked along the left wall, lightly encroaching on the roadway.", "hazard_reasoning": "There is a pedestrian wearing a dark-purple coat and beige pants, and walking away from the ego car, in front of the ego car. The driver should be aware of the pedestrian ahead to react timely and prevent a potential collision."}
{"id": "train_03883", "split": "train", "clip_key": "titan_clip_1_000648_movie", "source": {"subset": "titan", "scenario": "clip_1", "frame": "000648"}, "frames": ["titan_clip_1_000648_movie_t-3.jpg", "titan_clip_1_000648_movie_t-2.jpg", "titan_clip_1_000648_movie_t-1.jpg", "titan_clip_1_000648_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A dense urban shopping street with a single narrow two-way lane and no median appears, the pavement slightly worn and traffic light and slow. A small black vehicle ahead in the ego lane rolls away at low speed and effectively sets the pace. On the left edge of the roadway, a pedestrian walks toward the ego around a parked silver van, forced into the lane by the obstruction. On the right, another pedestrian moves along the sidewalk close to the curb but outside the lane. Parked vehicles and shop signboards crowd both sides, narrowing the corridor.", "hazard_reasoning": "There is a tall pedestrian wearing a purple shirt and walking on the left side of the road, towards the ego car, because of the parked vehicle. The pedestrian is forced closer to the travel lane and may step into the vehicle's path unexpectedly, requiring driver awareness."}
{"id": "train_03884", "split": "train", "clip_key": "titan_clip_1259_000354_movie", "source": {"subset": "titan", "scenario": "clip_1259", "frame": "000354"}, "frames": ["titan_clip_1259_000354_movie_t-3.jpg", "titan_clip_1259_000354_movie_t-2.jpg", "titan_clip_1259_000354_movie_t-1.jpg", "titan_clip_1259_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban commercial street in Japan runs ahead, two-way with no median and worn pavement, and traffic is light with no oncoming vehicles visible. On the left side ahead, a pedestrian wearing a white shirt and carrying a backpack walks away from the ego-vehicle along the edge of the lane, close enough that they may enter the path. Farther ahead to the right, a cyclist rides in the same direction near the curb at a moderate pace and could merge toward the travel lane. A white van ahead in the ego lane is stopped or creeping near the center, narrowing the passage and setting the pace.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, and walking, on the left side of the road, away from the ego-car. You should carefully manoeuvre around the pedestrian because the parked van limits visibility and they may step into the road unexpectedly."}
{"id": "train_03885", "split": "train", "clip_key": "2020-0210-155354_035027_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "035027"}, "frames": ["2020-0210-155354_035027_movie_t-3.jpg", "2020-0210-155354_035027_movie_t-2.jpg", "2020-0210-155354_035027_movie_t-1.jpg", "2020-0210-155354_035027_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes and a sidewalk barrier unfolds ahead, the pavement smooth and traffic heavy and queued at an intersection under a red signal. Ahead in the ego lane, a purple sedan is stopped while angled left across the lane marking, partially merging toward the left lane. Slightly ahead in the left lane, a white van waits in the queue, leaving limited gap for the sedan to merge. To the right, a black sedan in the adjacent lane is also stopped in line, matching the standstill. Overhead directional signs in Japanese are visible above the lanes.", "hazard_reasoning": "There is a purple sedan stopped while changing lanes from the ego lane to the left lane, because of the red traffic light. The driver should anticipate the merging stopped vehicle at the red light and stop to avoid collision."}
{"id": "train_03886", "split": "train", "clip_key": "2020-0228-102841_061598_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "061598"}, "frames": ["2020-0228-102841_061598_movie_t-3.jpg", "2020-0228-102841_061598_movie_t-2.jpg", "2020-0228-102841_061598_movie_t-1.jpg", "2020-0228-102841_061598_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes appears under clear skies, the pavement dry and smooth, and traffic heavy in stop-and-go flow. A black mid-size SUV immediately ahead in the ego lane is stopped because of congestion, directly blocking the ego vehicle's path. To the left, a black sedan inches forward in the adjacent lane alongside the ego vehicle as the queue compresses. Farther ahead, several trucks and cars line up across the lanes and remain nearly stationary, sustaining the jam. On the far right, multiple white vans are parked along the curb outside the through lanes.", "hazard_reasoning": "There is a black mid-SUV stopped the ego lane, because of traffic congestion ahead, in front of the car. The driver should stop to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_03887", "split": "train", "clip_key": "titan_clip_393_000144_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_393_000144_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_393_000144_movie_t-3_augB1.jpg", "titan_clip_393_000144_movie_t-2_augB1.jpg", "titan_clip_393_000144_movie_t-1_augB1.jpg", "titan_clip_393_000144_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with brick paving and no centerline runs between close buildings; traffic is light and the surface looks well kept. The flow stays slow with no oncoming vehicles visible. A black van ahead in the ego lane slows near the left side, setting the pace for the ego vehicle. Ahead at mid-distance, a pedestrian wearing a black T-shirt and shorts crosses from the left toward the right across the lane and may enter the ego path. Closer to the ego vehicle, another pedestrian steps from the left curb and continues rightward across the lane directly ahead, further constraining speed.", "hazard_reasoning": "There is a pedestrian in front of the ego car, wearing a black t-shirt and shorts, crossing to the right side of the road. The driver should slow down to let the pedestrian cross safely."}
{"id": "train_03888", "split": "train", "clip_key": "titan_clip_735_000222_movie", "source": {"subset": "titan", "scenario": "clip_735", "frame": "000222"}, "frames": ["titan_clip_735_000222_movie_t-3.jpg", "titan_clip_735_000222_movie_t-2.jpg", "titan_clip_735_000222_movie_t-1.jpg", "titan_clip_735_000222_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban residential two-way street with no centerline stretches ahead, the pavement smooth and bordered by close buildings; traffic is light with no oncoming or same-direction vehicles visible. A bright blue car is parked at the right curb near the camera with its nose close to the lane, while a white van and other parked vehicles line the left curb farther ahead and a bicycle rests by the right wall. No pedestrian is visible on the right side of the road, and no notable traffic signs or signals appear.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, standing on the right side of the road. Since the pedestrian may step into the roadway unexpectedly, the driver should remain alert and maintain a safe distance."}
{"id": "train_03889", "split": "train", "clip_key": "2020-0127-132751_033905_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "033905"}, "frames": ["2020-0127-132751_033905_movie_t-3.jpg", "2020-0127-132751_033905_movie_t-2.jpg", "2020-0127-132751_033905_movie_t-1.jpg", "2020-0127-132751_033905_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road with a shrub-lined right curb and smooth pavement carries moderate, slow-moving traffic. Directly ahead in the ego lane a black SUV accelerates and pulls away, briefly opening a gap in front of the camera. In the adjacent left lane a silver convertible runs alongside and then edges forward while staying in its lane. Farther ahead in the left lane a small flatbed truck moves slowly, creating a short queue that limits that lane's flow.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03890", "split": "train", "clip_key": "2020-0213-143552_018087_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "018087"}, "frames": ["2020-0213-143552_018087_movie_t-3.jpg", "2020-0213-143552_018087_movie_t-2.jpg", "2020-0213-143552_018087_movie_t-1.jpg", "2020-0213-143552_018087_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with a signalized intersection and a single lane each way has smooth pavement and light traffic beginning to flow. A white truck directly ahead in the ego lane starts moving as the overhead signal shows green, setting the pace as it pulls through the junction. In the oncoming lane to the right, a black car proceeds through the intersection in its lane without encroaching on the ego path. Buildings line both sides, and there is no median or visible obstacle.", "hazard_reasoning": "There is a white truck starting to drive in front of the ego car in the ego lane because the lights have turned green. The driver should start moving promptly to keep pace with traffic flow and maintain a safe distance under the green light."}
{"id": "train_03891", "split": "train", "clip_key": "titan_clip_649_000432_movie", "source": {"subset": "titan", "scenario": "clip_649", "frame": "000432"}, "frames": ["titan_clip_649_000432_movie_t-3.jpg", "titan_clip_649_000432_movie_t-2.jpg", "titan_clip_649_000432_movie_t-1.jpg", "titan_clip_649_000432_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van", "environment_perception": "A narrow two-way urban residential street with no center line and smooth pavement runs straight, and traffic is light. On the left curb near the ego, a white van is parked; a man steps out from its side and moves toward the roadway, and he may enter the ego lane. Far ahead in the same direction, another small van proceeds away along the lane. Buildings closely flank the road, with a stone wall and shrubbery on the right that keep sight lines tight.", "hazard_reasoning": "There is a white van parked on the left side of the road. Because the parked van obstructs the view, the driver should manoeuvre around it to avoid a potential collision."}
{"id": "train_03892", "split": "train", "clip_key": "titan_clip_1308_000354_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1308_000354_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1308_000354_movie_t-3_augB1.jpg", "titan_clip_1308_000354_movie_t-2_augB1.jpg", "titan_clip_1308_000354_movie_t-1_augB1.jpg", "titan_clip_1308_000354_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrians ahead", "environment_perception": "A narrow two-way urban shopping street has good pavement and no median, and overall traffic is light and slow-moving. Two pedestrians ahead in the middle of the road walk away from the ego car carrying handbags, occupying the path and setting a slow pace. Another pedestrian ahead-right pulls a suitcase while walking in the lane and remains in the ego vehicle's path. A small white van further ahead in the same direction slows behind the pedestrians, constraining traffic. Parked delivery trucks line both curbs and narrow the passage.", "hazard_reasoning": "There are two pedestrians carrying a handbag and walking in the middle of the road, away from the ego car. The driver should yield to pedestrians as they are crossing within the vehicle's path and may not move aside."}
{"id": "train_03893", "split": "train", "clip_key": "2020-0226-101332_018162_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "018162"}, "frames": ["2020-0226-101332_018162_movie_t-3.jpg", "2020-0226-101332_018162_movie_t-2.jpg", "2020-0226-101332_018162_movie_t-1.jpg", "2020-0226-101332_018162_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road with a painted hatched area and smooth dry pavement stretches ahead, with light to moderate traffic as the scene approaches a busier junction. Overhead blue direction signs are visible. A black van in the ego lane ahead slows, constraining the ego vehicle's pace. To the right, a white coupe proceeds forward in the adjacent right lane across the hatched area and remains clear of the ego path. On the left sidewalk, a cyclist rides parallel to traffic near the rail. A blue utility truck is stopped at the far right curb ahead.", "hazard_reasoning": "There is a black van slowing in the ego lane, in front of the ego car. The van's reduced speed could force a sudden deceleration, so the driver should slow down to maintain a safe following distance."}
{"id": "train_03894", "split": "train", "clip_key": "2020-0129-105040_070401_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "070401"}, "frames": ["2020-0129-105040_070401_movie_t-3.jpg", "2020-0129-105040_070401_movie_t-2.jpg", "2020-0129-105040_070401_movie_t-1.jpg", "2020-0129-105040_070401_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Yield to the cyclist ahead", "environment_perception": "An urban two-lane road with a solid yellow centerline and smooth pavement carries light traffic as the ego car proceeds in the left lane. Ahead in the ego lane near the left curb, a cyclist in a white outfit rides away from the camera, occupying part of the path and constraining speed. Farther ahead, a white mini-van in the same lane moves steadily in the same direction, further controlling the pace. At the near left edge, another cyclist approaches toward us along the curb and may encroach into the ego lane while passing. On the right side, a silver van stands at the curb in the oncoming lane.", "hazard_reasoning": "There is a pedestrian wearing a white dress and cycling away from the ego car, in front of the ego car. The driver should yield because the cyclist is directly ahead and may change speed or direction unexpectedly."}
{"id": "train_03895", "split": "train", "clip_key": "titan_clip_247_000060_movie", "source": {"subset": "titan", "scenario": "clip_247", "frame": "000060"}, "frames": ["titan_clip_247_000060_movie_t-3.jpg", "titan_clip_247_000060_movie_t-2.jpg", "titan_clip_247_000060_movie_t-1.jpg", "titan_clip_247_000060_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single marked lane and no median runs between shopfronts, the pavement smooth and traffic light. Ahead near the center distance, a pedestrian in a black shirt and black pants crosses mid-block from left to right toward the sidewalk, potentially entering the ego vehicle's path. A red car stands stopped along the left curb ahead, narrowing the usable lane and prompting cautious spacing as the ego approaches. A few other pedestrians are visible farther ahead near the cross street but remain on the sidewalks.", "hazard_reasoning": "There is a pedestrian in black shirt and black pants, crossing the street in the middle of the road to the right side. The driver should slow down to maintain a safe distance and avoid a potential collision with the crossing pedestrian."}
{"id": "train_03896", "split": "train", "clip_key": "2020-0203-114632_092625_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "092625"}, "frames": ["2020-0203-114632_092625_movie_t-3.jpg", "2020-0203-114632_092625_movie_t-2.jpg", "2020-0203-114632_092625_movie_t-1.jpg", "2020-0203-114632_092625_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway carries two lanes in the ego direction, separated from oncoming traffic by a narrow planted median; the pavement is dry and traffic is light. A white hatchback ahead of the ego car changes to the left lane, moving gradually out of the ego lane as it aligns alongside the bushes. Several oncoming cars proceed along the far-left opposite carriageway beyond the median with no interaction. A few parked vehicles sit along the left roadside near shops but remain outside the travel lanes.", "hazard_reasoning": "A white hatchback in front of the ego car is changing to the left lane. This maneuver reduces the gap ahead and may force a sudden reaction, so slow down to maintain a safe following distance."}
{"id": "train_03897", "split": "train", "clip_key": "2020-0218-103119_057404_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "057404"}, "frames": ["2020-0218-103119_057404_movie_t-3.jpg", "2020-0218-103119_057404_movie_t-2.jpg", "2020-0218-103119_057404_movie_t-1.jpg", "2020-0218-103119_057404_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to allow safe lane change.", "environment_perception": "An urban two-lane road runs under an elevated structure with smooth pavement and light, steady traffic. Ahead in the left ego lane, a white box truck signals and begins changing to the right lane in front of the ego car, momentarily slowing and constraining the ego vehicle's pace. In the adjacent right lane, a small white bus continues straight slightly ahead, paralleling the merge and limiting the available gap. On the left sidewalk, a cyclist rides toward the camera behind a low barrier, remaining separated from the roadway.", "hazard_reasoning": "There is a white truck lane changing from the ego lane to the right lane, in front of the ego car. The truck's lane change could intersect the ego-vehicle's path unexpectedly, so the driver should slow down to maintain a safe distance and allow the truck to complete its merge."}
{"id": "train_03898", "split": "train", "clip_key": "2020-0131-103016_003208_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "003208"}, "frames": ["2020-0131-103016_003208_movie_t-3.jpg", "2020-0131-103016_003208_movie_t-2.jpg", "2020-0131-103016_003208_movie_t-1.jpg", "2020-0131-103016_003208_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with smooth asphalt, guardrails on both sides, and moderate, steady same-direction traffic. A white sedan in the right lane ahead moves left into the ego lane and merges in front of the ego car, consistent with the caption. A dark hatchback directly ahead in the ego lane travels steadily and sets the pace. Farther ahead, a small white van in the center continues with the flow among several cars. Large 50 markings painted on the roadway indicate the posted speed.", "hazard_reasoning": "There is a white sedan lane changing in front of the ego car, from the right lane to the ego lane. The sedan's maneuver reduces the gap ahead and may force sudden braking, so the driver should slow down to maintain a safe distance."}
{"id": "train_03899", "split": "train", "clip_key": "2020-0226-140503_081773_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "081773"}, "frames": ["2020-0226-140503_081773_movie_t-3.jpg", "2020-0226-140503_081773_movie_t-2.jpg", "2020-0226-140503_081773_movie_t-1.jpg", "2020-0226-140503_081773_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth dry pavement carries heavy, mostly stopped traffic in the ego vehicle's direction amid midrise buildings. A white hatchback is directly ahead in the ego lane and remains stopped because of congestion, holding the ego car in place. In the lane to the left, a large box truck just ahead creeps forward with the queue and limits the left-side view. Alongside on the far left, a white minivan inches ahead in parallel while keeping to its lane. On the curbside right, a yellow road service vehicle is parked off the roadway, posing no immediate obstruction.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of traffic congestion ahead. The halted vehicle indicates dense traffic and potential sudden stops, so the driver should stop to avoid a collision."}
{"id": "train_03900", "split": "train", "clip_key": "titan_clip_1358_000240_movie", "source": {"subset": "titan", "scenario": "clip_1358", "frame": "000240"}, "frames": ["titan_clip_1358_000240_movie_t-3.jpg", "titan_clip_1358_000240_movie_t-2.jpg", "titan_clip_1358_000240_movie_t-1.jpg", "titan_clip_1358_000240_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for crossing pedestrian ahead.", "environment_perception": "A narrow urban shopping street with a single vehicle lane is bordered by bollards and storefronts; the pavement is smooth and traffic is very light. Ahead, a woman carrying an umbrella and wearing a pink shirt crosses from the right sidewalk to the left directly in front of the ego car, temporarily occupying the ego lane. A small group of pedestrians stands at the left curb near the camera, lingering at the edge and potentially near the lane but not stepping out. Additional pedestrians walk along the right sidewalk. Bicycles are parked along the left curb, tightening the roadside space.", "hazard_reasoning": "There is a woman carrying an umbrella, wearing a pink shirt, and crossing from the right side to the left side of the street, in front of the ego car. The driver should stop for crossing pedestrian ahead to avoid a collision."}
{"id": "train_03901", "split": "train", "clip_key": "2020-0207-101955_030235_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "030235"}, "frames": ["2020-0207-101955_030235_movie_t-3.jpg", "2020-0207-101955_030235_movie_t-2.jpg", "2020-0207-101955_030235_movie_t-1.jpg", "2020-0207-101955_030235_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the stopped sedan on the left.", "environment_perception": "A wide urban, signalized intersection comes into view on smooth pavement, with multi-lane two-way traffic and zebra crossings; overall flow is light and steady. On the side street to the right ahead, a white sedan is stopped at the left side of the road next to the curb and remains stationary without obstructing the ego lane. At the near-right corner by the station entrance, a group of pedestrians waits beside the crosswalk, standing on the sidewalk. Other vehicles are sparse in the distance, and no unusual obstacles or work zones appear.", "hazard_reasoning": "There is a white sedan stopped at the left side of the road. The stopped sedan on the left may block your path or re-enter traffic unexpectedly, so be cautious to avoid sudden braking or swerving."}
{"id": "train_03902", "split": "train", "clip_key": "titan_clip_51_000066_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_51_000066_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_51_000066_movie_t-3_augB1.jpg", "titan_clip_51_000066_movie_t-2_augB1.jpg", "titan_clip_51_000066_movie_t-1_augB1.jpg", "titan_clip_51_000066_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid hitting the worker.", "environment_perception": "An urban two-way street with narrow lanes, no median, and sound pavement runs between low-rise buildings; traffic is light but briefly impeded by construction ahead. In the left ego lane, a utility truck with a boom is stopped near midblock, partly occupying the lane and forming a work zone that constrains the ego vehicle's approach. Ahead near the truck, a construction worker in a green suit stands in the middle of the road and signals instructions to drivers, guiding passage around the obstruction. Along the left curb, additional crew and equipment remain stationary beside the site. The oncoming lane to the right is clear, and no signals or posted speeds are visible.", "hazard_reasoning": "The construction worker in a green suit is standing in the middle of the road because he is giving drivers some instructions. The driver should slow down to safely navigate around the worker instructing traffic."}
{"id": "train_03903", "split": "train", "clip_key": "titan_clip_428_000138_movie", "source": {"subset": "titan", "scenario": "clip_428", "frame": "000138"}, "frames": ["titan_clip_428_000138_movie_t-3.jpg", "titan_clip_428_000138_movie_t-2.jpg", "titan_clip_428_000138_movie_t-1.jpg", "titan_clip_428_000138_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban neighborhood street with one lane in each direction runs between mid-rise buildings, with no median and smooth pavement; traffic is light. Ahead at the zebra crossing, a pedestrian carrying an umbrella crosses from the right sidewalk to the left across the ego lane. A gold taxi in the oncoming lane passes close on the right edge of the frame, traveling toward the camera and then clearing by. Farther ahead, a white service truck approaches in the oncoming lane near the center of the road. A pedestrian crossing sign and a school-zone warning sign stand by the crosswalk.", "hazard_reasoning": "There is a pedestrian carrying an umbrella, crossing the street, and walking from the right side of the road to the left side. The driver must slow down to yield to the pedestrian and prevent a collision."}
{"id": "train_03904", "split": "train", "clip_key": "2020-0204-103442_068655_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "068655"}, "frames": ["2020-0204-103442_068655_movie_t-3.jpg", "2020-0204-103442_068655_movie_t-2.jpg", "2020-0204-103442_068655_movie_t-1.jpg", "2020-0204-103442_068655_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A suburban two-lane two-way road with a solid yellow centerline and dry, slightly worn pavement runs through a residential area, and overall traffic is light with no notable changes. A black sedan ahead in the ego lane is slowing, so it sets the pace for the ego vehicle. The oncoming lane to the right appears clear while several white vans and other cars are parked along the right shoulder and in a parking lot to the left, remaining stationary and outside the travel lanes. A circular 30 sign stands on the left verge near commercial parking signs, and a low guardrail lines a narrow curb island on the left edge of the lane.", "hazard_reasoning": "There is a black sedan slowing in front of the ego car, in the ego lane. Because the sedan is reducing speed in the same lane, the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_03905", "split": "train", "clip_key": "titan_clip_1243_000570_movie", "source": {"subset": "titan", "scenario": "clip_1243", "frame": "000570"}, "frames": ["titan_clip_1243_000570_movie_t-3.jpg", "titan_clip_1243_000570_movie_t-2.jpg", "titan_clip_1243_000570_movie_t-1.jpg", "titan_clip_1243_000570_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "A narrow urban two-way residential street with one lane each way and no median appears, the pavement is smooth and traffic is light. Ahead on the left edge, a white van is parked with its rear doors open because it is being unloaded, partially encroaching into the ego lane and constraining the approach. A person stands at the van's open rear beside a step ladder, moving items in and out of the cargo area close to the travel lane, creating a roadside obstruction. No other vehicles or signals are prominent, and the rest of the road ahead looks clear.", "hazard_reasoning": "There is a white van parked on the left side of the road, because it is being unloaded. Because the van is being unloaded and a pedestrian is nearby, the driver should carefully manoeuvre around the van and pedestrian to avoid collision."}
{"id": "train_03906", "split": "train", "clip_key": "2020-0210-101957_025648_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "025648"}, "frames": ["2020-0210-101957_025648_movie_t-3.jpg", "2020-0210-101957_025648_movie_t-2.jpg", "2020-0210-101957_025648_movie_t-1.jpg", "2020-0210-101957_025648_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes and a fenced median dividing oncoming traffic appears dry and in good condition, and the overall flow is moderate. A black van travels ahead in the ego lane and gradually pulls away, setting the pace. In the adjacent left lane, a white minivan ahead proceeds steadily at a similar speed, remaining parallel to the ego vehicle's path. Along the far-left curb, a motorbike moves forward slowly near the lane line and may drift into the traffic lane, so its position remains relevant to the ego lane. Overhead traffic signals ahead show green. Oncoming vehicles move separately on the opposite carriageway beyond the fence, and no obstacles or work zones are visible.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car. You should follow the vehicle ahead to maintain a safe distance and be prepared for any sudden braking."}
{"id": "train_03907", "split": "train", "clip_key": "2020-0205-103411_051575_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "051575"}, "frames": ["2020-0205-103411_051575_movie_t-3.jpg", "2020-0205-103411_051575_movie_t-2.jpg", "2020-0205-103411_051575_movie_t-1.jpg", "2020-0205-103411_051575_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multilane arterial approaches a wide signalized intersection, with smooth pavement and a small raised curb island on the right; traffic is moderate and slows to a halt. A black van directly ahead in the ego lane is stopped at a red light, constraining the ego vehicle. A dark station wagon in the lane to the left edges forward and comes to a stop alongside. Farther ahead in a left lane, a white box truck also queues and stops at the intersection. The overhead signal is red, and a pedestrian overpass spans the roadway above.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid colliding with the stopped vehicle and comply with the traffic signal."}
{"id": "train_03908", "split": "train", "clip_key": "titan_clip_1109_000144_movie", "source": {"subset": "titan", "scenario": "clip_1109", "frame": "000144"}, "frames": ["titan_clip_1109_000144_movie_t-3.jpg", "titan_clip_1109_000144_movie_t-2.jpg", "titan_clip_1109_000144_movie_t-1.jpg", "titan_clip_1109_000144_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for crossing pedestrian", "environment_perception": "A narrow urban side street with smooth asphalt and no centerline runs between mid-rise buildings, with curbside parking and light traffic. A pedestrian in a blue shirt crosses left to right directly ahead of the ego vehicle, traversing the travel lane and occupying its path. Two pedestrians on the right sidewalk walk near a cafe entrance, moving parallel to traffic and staying near the curb. A small white car far ahead in the same direction proceeds straight without visible change in speed. Parked vans on the left and bicycles racked on the right narrow the lane and partially block sightlines at the edges.", "hazard_reasoning": "There is a pedestrian in blue shirt, crossing the street in front of the ego car, from the left side to the right side. The driver should slow down because the pedestrian is entering the vehicle's path and could step into its lane unexpectedly."}
{"id": "train_03909", "split": "train", "clip_key": "2020-0228-102841_002523_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "002523"}, "frames": ["2020-0228-102841_002523_movie_t-3.jpg", "2020-0228-102841_002523_movie_t-2.jpg", "2020-0228-102841_002523_movie_t-1.jpg", "2020-0228-102841_002523_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian approaching intersection", "environment_perception": "A narrow urban shopping street carries a single shared two-way lane with no centerline or divider; pavement looks intact and traffic is light with no moving vehicles. A pedestrian in a black jacket and black pants is on the right at the upcoming intersection, walking toward the ego car along the curb and nearing the lane. A person ahead in the center of the lane walks away in the same direction as the ego vehicle, occupying the path and constraining pace. On the left, several pedestrians stand at the curb outside shops, some edging into the roadway and reducing clearance. Scaffolding, vending machines, and parked bicycles line the right side, further narrowing the approach to the intersection.", "hazard_reasoning": "There is a pedestrian wearing a black jacket and black pants, walking at the right side of the intersection, toward the ego car. The pedestrian is moving into the vehicle's path and may cross ahead, so the driver should be aware and prepare to slow down."}
{"id": "train_03910", "split": "train", "clip_key": "2020-0221-115122_031251_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "031251"}, "frames": ["2020-0221-115122_031251_movie_t-3.jpg", "2020-0221-115122_031251_movie_t-2.jpg", "2020-0221-115122_031251_movie_t-1.jpg", "2020-0221-115122_031251_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be cautious of merging vehicle ahead.", "environment_perception": "An urban multi-lane arterial runs under an elevated roadway, with a right-side guardrail and smooth dry pavement; traffic is heavy and slow in the same direction. Directly ahead, a black sedan moves over from the left lane into the ego lane and settles in front, constraining the ego car's pace. Farther ahead, a white compact car continues in the ego lane at low speed amid the queue. Vehicles in the adjacent left lanes creep forward parallel to the ego vehicle without merging. No notable signals appear, and there are no other obstacles visible.", "hazard_reasoning": "There is a black sedan in front of the ego car, cutting in to the ego lane from the left lane. This cut-in reduces space and may force sudden braking or steering, so the driver should remain cautious of merging vehicles ahead."}
{"id": "train_03911", "split": "train", "clip_key": "titan_clip_1301_000522_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1301_000522_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1301_000522_movie_t-3_augB1.jpg", "titan_clip_1301_000522_movie_t-2_augB1.jpg", "titan_clip_1301_000522_movie_t-1_augB1.jpg", "titan_clip_1301_000522_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street with a single narrow shared lane on stone pavement has no median and very light moving traffic while delivery trucks remain stopped. Clearance is tight but the path ahead is otherwise open. On the left beside the ego path, a worker in a blue shirt and blue pants stands at a Coca-Cola delivery truck handling metal tanks, occupying part of the lane and reducing space to pass. Farther ahead in the same direction, another box truck is stopped in the lane and constrains progress. On the right edge, a cluster of pedestrians with umbrellas linger near the curb and face the roadway, potentially stepping into the path. Short bollards line the right curb and channel vehicles through the narrow gap.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and blue pants, and standing on the left side of the road because he is handling metal tanks inside a delivery truck. The pedestrian's close proximity to moving traffic and the unloading activity increase collision risk, so the driver should slow down under this situation."}
{"id": "train_03912", "split": "train", "clip_key": "titan_clip_635_000234_movie", "source": {"subset": "titan", "scenario": "clip_635", "frame": "000234"}, "frames": ["titan_clip_635_000234_movie_t-3.jpg", "titan_clip_635_000234_movie_t-2.jpg", "titan_clip_635_000234_movie_t-1.jpg", "titan_clip_635_000234_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane each direction and no median runs between buildings; pavement looks smooth and traffic is light but slowed. A small box truck ahead in the ego lane moves slowly and then pauses, setting the pace. At the left curb near the truck, a person wearing a white T-shirt waits to cross into the ego lane. On the right side ahead, another pedestrian walks along the edge of the opposite lane toward the truck. A distant oncoming vehicle proceeds in its lane with no immediate interaction.", "hazard_reasoning": "There is a man wearing a white t-shirt, waiting to cross in the ego lane from the left side. Because the pedestrian is about to step onto the road ahead, the driver should slow down to prepare to stop and avoid collision."}
{"id": "train_03913", "split": "train", "clip_key": "2020-0205-103411_108564_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "108564"}, "frames": ["2020-0205-103411_108564_movie_t-3.jpg", "2020-0205-103411_108564_movie_t-2.jpg", "2020-0205-103411_108564_movie_t-1.jpg", "2020-0205-103411_108564_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction runs straight on smooth asphalt, divided by a low curb median. Traffic is light and flows freely throughout. A white van ahead in the ego lane moves steadily straight, maintaining a gap and effectively setting the ego car's pace amid the lack of congestion. To the right of the median, several oncoming vehicles, including minivans and a larger truck, pass by in their lanes without interacting with the ego path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03914", "split": "train", "clip_key": "2020-0204-150838_046368_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "046368"}, "frames": ["2020-0204-150838_046368_movie_t-3.jpg", "2020-0204-150838_046368_movie_t-2.jpg", "2020-0204-150838_046368_movie_t-1.jpg", "2020-0204-150838_046368_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Be aware of slowing truck ahead", "environment_perception": "An urban multi-lane arterial runs between tall buildings; the dark, worn pavement carries slow, heavy traffic. Ahead in the left lane, a large box truck slows in front of the ego-car as queues build, effectively setting the pace. Slightly to the right ahead, a silver hatchback moves into the right-turn lane and brakes beside the ego lane. On the far left near the curb, a light blue minivan creeps forward just ahead in the adjacent lane. Overhead gantry signs show straight arrows for the middle lanes and a right-turn arrow for the rightmost lane, and a few cones line the right curb by a fenced green strip.", "hazard_reasoning": "There is a large gray truck slowing in the left lane ahead of the ego-car, because of traffic congestion ahead. The truck's reduced speed could lead to sudden braking if unanticipated, so the driver should be aware of the slowing truck ahead and adjust speed accordingly."}
{"id": "train_03915", "split": "train", "clip_key": "2020-0127-132751_104404_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0127-132751_104404_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0127-132751_104404_movie_t-3_augB1.jpg", "2020-0127-132751_104404_movie_t-2_augB1.jpg", "2020-0127-132751_104404_movie_t-1_augB1.jpg", "2020-0127-132751_104404_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "On an urban commercial street, the ego car moves in the left lane of a two-way road divided by a solid yellow center line; the pavement looks intact and traffic is light to moderate with some oncoming vehicles. A small silver van directly ahead in the ego lane slows with brake lights on, constraining the ego vehicle. A pedestrian wearing a face mask and carrying a handbag crosses from the right toward the left sidewalk immediately in front of the ego car, moving through the vehicle's path. An oncoming black car proceeds straight in the opposite lane to the right without interacting. A narrow curb and shop driveways line the left side.", "hazard_reasoning": "There's a pedestrian carrying a handbag and wearing a face mask, crossing to the left side of the road, directly in front of the ego car. The pedestrian is entering the vehicle's path at the marked crossing, so the driver must stop immediately to avoid collision."}
{"id": "train_03916", "split": "train", "clip_key": "titan_clip_368_000528_movie", "source": {"subset": "titan", "scenario": "clip_368", "frame": "000528"}, "frames": ["titan_clip_368_000528_movie_t-3.jpg", "titan_clip_368_000528_movie_t-2.jpg", "titan_clip_368_000528_movie_t-1.jpg", "titan_clip_368_000528_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to crossing pedestrian", "environment_perception": "An urban two-way side street with no median meets a cross street at an unsignalized intersection; the pavement is smooth and traffic appears light. The ego vehicle slows as it nears the junction. On the right side of the intersection, a pedestrian wearing a blue shirt and pink skirt pushes a stroller and walks across the ego path in the middle of the junction, constraining the ego's pace. Along the right curb of the cross street, a white box truck and a black sedan stand near the corner, narrowing space and partially blocking the view into the cross street.", "hazard_reasoning": "There is a pedestrian pushing a stroller, wearing a blue shirt and a pink skirt, crossing the street in the middle of an intersection, to the right side. This pedestrian has right-of-way and the driver should yield to prevent a collision."}
{"id": "train_03917", "split": "train", "clip_key": "titan_clip_685_000072_movie", "source": {"subset": "titan", "scenario": "clip_685", "frame": "000072"}, "frames": ["titan_clip_685_000072_movie_t-3.jpg", "titan_clip_685_000072_movie_t-2.jpg", "titan_clip_685_000072_movie_t-1.jpg", "titan_clip_685_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian.", "environment_perception": "An urban shopping street with a single narrow lane, no median, and smooth pavement shows light traffic, with the roadway shared by pedestrians and cyclists. At the left front, a pedestrian steps off the sidewalk and walks diagonally away across the lane, occupying the ego vehicle's path. Farther ahead on the left edge, a man in a white shirt and gray pants walks away along the curb, potentially edging into the lane. Near the center ahead, a cyclist approaches along the middle of the roadway, reducing available space. A triangular pavement marking with Japanese text is visible.", "hazard_reasoning": "There is a man wearing a white shirt and gray pants, and walking away from the ego car, on the left side of the road. The driver should be aware of this pedestrian as they may unexpectedly move into the vehicle's path."}
{"id": "train_03918", "split": "train", "clip_key": "2020-0217-110854_067094_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "067094"}, "frames": ["2020-0217-110854_067094_movie_t-3.jpg", "2020-0217-110854_067094_movie_t-2.jpg", "2020-0217-110854_067094_movie_t-1.jpg", "2020-0217-110854_067094_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "be cautious of truck cutting in ahead", "environment_perception": "An urban two-way boulevard lined with buildings and leafless trees has two same-direction lanes on the left side and oncoming lanes on the right, separated by painted medians; the pavement looks smooth and traffic is moderate. Ahead left, a white mini truck cuts into the ego lane from the left lane, moving inward and reducing the available gap in front of the ego vehicle. Directly ahead, a beige hatchback in the ego lane proceeds straight at a steady pace and becomes the immediate lead vehicle. On the near left, a large tarp-covered truck travels slightly ahead near the curb, partly blocking the left-side view while remaining alongside. Oncoming vehicles move in the far-right lanes without interacting. A broad hatched area marks a separation to the right of the ego lane.", "hazard_reasoning": "There is a white truck cutting in to the ego lane from the left lane. The truck's lane change may force the driver to brake or swerve unexpectedly, so the driver should stay alert to maintain safe following distance under this situation."}
{"id": "train_03919", "split": "train", "clip_key": "2020-0214-145407_014775_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "014775"}, "frames": ["2020-0214-145407_014775_movie_t-3.jpg", "2020-0214-145407_014775_movie_t-2.jpg", "2020-0214-145407_014775_movie_t-1.jpg", "2020-0214-145407_014775_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial in Japan runs straight with three same-direction lanes and a curbside sidewalk, no center median visible; pavement is dry and smooth, and traffic flows at moderate speed. A white box truck slows directly ahead in the ego lane, constraining the ego car's pace. Another box truck travels slightly ahead in the lane to the right, keeping its lane and moving steadily parallel to the ego vehicle. A small white car in the far-right lane proceeds ahead at a similar speed and continues straight, not merging.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. You should slow down because the truck ahead is reducing speed, posing a risk of collision if you maintain your current speed."}
{"id": "train_03920", "split": "train", "clip_key": "titan_clip_820_000180_movie", "source": {"subset": "titan", "scenario": "clip_820", "frame": "000180"}, "frames": ["titan_clip_820_000180_movie_t-3.jpg", "titan_clip_820_000180_movie_t-2.jpg", "titan_clip_820_000180_movie_t-1.jpg", "titan_clip_820_000180_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban back street with a narrow two-way carriageway lacks a centerline; the asphalt is smooth and dry, and traffic is light with no moving vehicles ahead or oncoming. On the right at a building entrance, a pedestrian stands at the curb looking at a phone very close to the lane, which may bring him into the ego path. Farther ahead near the left edge, two pedestrians walk away along the roadside without entering the lane. At the left parking-lot entrance, a silver van and a white car remain stationary beside the lane near the exit. A row of orange traffic cones lines the right side of the road, narrowing the margin beside the building.", "hazard_reasoning": "There is a traffic cone on the right side of the road. Drivers should carefully manoeuvre around the cones to avoid entering the restricted area and prevent collisions with the temporary barrier."}
{"id": "train_03921", "split": "train", "clip_key": "2020-0226-140503_056789_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "056789"}, "frames": ["2020-0226-140503_056789_movie_t-3.jpg", "2020-0226-140503_056789_movie_t-2.jpg", "2020-0226-140503_056789_movie_t-1.jpg", "2020-0226-140503_056789_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban hillside street with a single narrow uphill lane in each direction lacks a median and bends gently right; the asphalt looks damp and traffic is light. A dark SUV ahead in the ego lane climbs slowly near the center of the road, modestly constraining the ego vehicle. Two pedestrians on the right sidewalk beside the buildings walk uphill near the curb but stay off the carriageway. No oncoming vehicles are visible in the scene. A large 30 marking on the pavement indicates a 30 speed zone, and the right edge is lined by a dashed buffer.", "hazard_reasoning": "No hazards are present in the scene, so no driver warning is needed."}
{"id": "train_03922", "split": "train", "clip_key": "2020-0207-101955_109121_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "109121"}, "frames": ["2020-0207-101955_109121_movie_t-3.jpg", "2020-0207-101955_109121_movie_t-2.jpg", "2020-0207-101955_109121_movie_t-1.jpg", "2020-0207-101955_109121_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs under an elevated expressway with a marked crosswalk and dry pavement; traffic is moderate and moves slowly. A blue sedan directly ahead in the ego lane slows, constraining the ego car's pace. A white minivan slightly ahead in the adjacent right lane proceeds parallel at a similar speed and could merge left in front near the crosswalk. A small flatbed truck with a green cover is to the left near the crosswalk, moving slowly alongside and limiting space for lane changes. Large bridge pillars on the right create partial sightline obstructions to the curb area.", "hazard_reasoning": "There is a blue sedan slowing in the ego lane, in front of the ego car. The driver should slow down because the vehicle ahead is reducing speed and may require extra stopping distance to avoid a collision under these shadowed roadway conditions."}
{"id": "train_03923", "split": "train", "clip_key": "titan_clip_1302_000096_movie", "source": {"subset": "titan", "scenario": "clip_1302", "frame": "000096"}, "frames": ["titan_clip_1302_000096_movie_t-3.jpg", "titan_clip_1302_000096_movie_t-2.jpg", "titan_clip_1302_000096_movie_t-1.jpg", "titan_clip_1302_000096_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrians on the right", "environment_perception": "A narrow urban commercial street with block paving leads to a small intersection, with no median and light, slow traffic. A box truck stands ahead slightly left in the lane, stopped for loading at the curb and constraining the usable width. Near the ego vehicle on the left edge, another white truck is stopped at the corner and protrudes into the roadway, further narrowing the approach. On the right side of the intersection, a group of pedestrians stands talking by the curb, several close to the edge and potentially entering the lane as the vehicle approaches.", "hazard_reasoning": "There is a group of pedestrians talking in a group and standing on the right side of the intersection. The driver should be aware because pedestrians standing close to the roadway might step into the lane unexpectedly."}
{"id": "train_03924", "split": "train", "clip_key": "2020-0129-105040_061632_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061632"}, "frames": ["2020-0129-105040_061632_movie_t-3.jpg", "2020-0129-105040_061632_movie_t-2.jpg", "2020-0129-105040_061632_movie_t-1.jpg", "2020-0129-105040_061632_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with no median and red edge strips stretches ahead on dry, smooth pavement, and traffic is light. On the left near the ego vehicle, a pedestrian carrying a handbag and wearing a black dress and shirt walks away along the shoulder close to the travel lane. Farther ahead on the left, a white mini-truck is stationary partly in the ego lane, narrowing the passage. A red bicycle is parked at the curb beside the pedestrian. A round 20 speed-limit sign with a no-parking sign below is posted on the left.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing a black dress and a black shirt, and walking away from the ego car on the left side of the road. The driver should carefully manoeuvre around them to maintain a safe distance and prevent a side-swipe if the pedestrian steps off the sidewalk."}
{"id": "train_03925", "split": "train", "clip_key": "2020-0220-102630_104862_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "104862"}, "frames": ["2020-0220-102630_104862_movie_t-3.jpg", "2020-0220-102630_104862_movie_t-2.jpg", "2020-0220-102630_104862_movie_t-1.jpg", "2020-0220-102630_104862_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane per direction and a solid yellow centerline runs past shops and a curb; the dry pavement looks serviceable and traffic is light to moderate. A silver truck ahead in the ego lane drives away from the camera, staying near the center and effectively setting the ego vehicle's pace. In the opposing lane, a white SUV approaches and passes, clearly separated by the center line. On the left sidewalk, a pedestrian walks forward near storefront columns but remains off the roadway. A 40 km/h speed-limit sign stands on the left, and an overhead board marks 300 m to the next junction.", "hazard_reasoning": "There is a silver truck driving in the ego lane away from the ego car. The truck is approaching a red light and may stop suddenly, so maintain safe distance and be prepared to decelerate."}
{"id": "train_03926", "split": "train", "clip_key": "2020-0129-144857_026910_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "026910"}, "frames": ["2020-0129-144857_026910_movie_t-3.jpg", "2020-0129-144857_026910_movie_t-2.jpg", "2020-0129-144857_026910_movie_t-1.jpg", "2020-0129-144857_026910_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging van", "environment_perception": "An urban three-lane arterial runs beneath an elevated structure, with a curb and fence on the right; the asphalt is smooth and dry, and traffic flows lightly. Ahead, a black van merges from the left lane into the ego lane and continues straight, briefly reducing the headway. Farther ahead in the ego lane, a dark car travels steadily and sets the pace. In the left lane, a white box truck proceeds slightly ahead, remaining parallel and outside the ego path. Overhead lane-use signs indicate straight for the center lanes and a right-turn-only lane on the right.", "hazard_reasoning": "There is a black van lane changing from the left lane, in the ego lane. The van's sudden merge may cut off the ego-vehicle's path, so the driver should monitor its movement and be ready to react."}
{"id": "train_03927", "split": "train", "clip_key": "titan_clip_1132_000198_movie", "source": {"subset": "titan", "scenario": "clip_1132", "frame": "000198"}, "frames": ["titan_clip_1132_000198_movie_t-3.jpg", "titan_clip_1132_000198_movie_t-2.jpg", "titan_clip_1132_000198_movie_t-1.jpg", "titan_clip_1132_000198_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban single-lane road with no centerline runs between buildings and a riverside fence; the pavement is smooth and vehicle traffic is light, with pedestrians using the lane. A pedestrian in a white T-shirt and blue pants walks away along the left edge ahead of the ego car, remaining in the lane. Two pedestrians directly ahead in the center also walk away, constraining the ego vehicle's speed. Farther ahead another pedestrian moves from the center toward the right verge, briefly occupying the ego path. A no-entry sign is posted at a small left-side entrance.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and blue pants, and walking on the left side of the road, away from the ego car. The pedestrian may unexpectedly step into the lane, so the driver should yield to ensure safety."}
{"id": "train_03928", "split": "train", "clip_key": "2020-0213-143552_009654_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009654"}, "frames": ["2020-0213-143552_009654_movie_t-3.jpg", "2020-0213-143552_009654_movie_t-2.jpg", "2020-0213-143552_009654_movie_t-1.jpg", "2020-0213-143552_009654_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the traffic cone", "environment_perception": "An urban two-way road with one lane each direction has dry pavement and light traffic. A short work zone narrows the roadway; an orange traffic cone stands on the right side of the ego lane and more cones and barricades extend ahead along the center and right shoulder. A dark sedan ahead in the ego lane moves steadily through the gap, setting the ego vehicle's pace. In the opposite lane a small white truck approaches past the cones, relevant because the narrowed space reduces lateral clearance. A pedestrian on the right sidewalk walks away from the camera near the work area but remains off the roadway.", "hazard_reasoning": "There is an orange traffic cone on the right side of the ego car's lane. The cone partially obstructs the lane, so the driver should manoeuvre around it to avoid collision and maintain safe passage."}
{"id": "train_03929", "split": "train", "clip_key": "2020-0205-152530_029481_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "029481"}, "frames": ["2020-0205-152530_029481_movie_t-3.jpg", "2020-0205-152530_029481_movie_t-2.jpg", "2020-0205-152530_029481_movie_t-1.jpg", "2020-0205-152530_029481_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs beneath an elevated structure, the asphalt smooth and dry, with moderate, slow-moving same-direction traffic. A gray minivan directly ahead in the ego lane starts to move and creeps forward, controlling the ego vehicle's pace. A red hatchback in the lane to the left advances slightly faster beside the ego vehicle, limiting a leftward lane change. Farther ahead a white car proceeds in the through lanes with the flow. A right-turn-only lane lies to the ego's right, marked by arrows and bordered by a curb and railing, and it appears clear.", "hazard_reasoning": "There is a gray minivan starting to move in front of the ego car, in the ego lane. The minivan's movement indicates it is accelerating from a stop, so the driver should start moving to maintain safe traffic flow and avoid unnecessary delay."}
{"id": "train_03930", "split": "train", "clip_key": "2020-0131-103016_068118_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "068118"}, "frames": ["2020-0131-103016_068118_movie_t-3.jpg", "2020-0131-103016_068118_movie_t-2.jpg", "2020-0131-103016_068118_movie_t-1.jpg", "2020-0131-103016_068118_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes and no physical median runs between tall office buildings; the pavement is smooth and dry and traffic is light to moderate with steady flow. Two pedestrians in dark clothing step from the right corner and cross the zebra crosswalk toward the left, moving into the path ahead and likely to affect the ego vehicle's progress. Several same-direction cars farther ahead continue straight in the center lanes, setting a steady pace. Oncoming traffic to the right moves past the intersection in its lanes and remains separate from the ego path. A dark minivan is stopped in a left-side parking bay near the crosswalk. A no-turn sign stands on the right.", "hazard_reasoning": "There are two pedestrians dressed in all black, crossing at the pedestrian crosswalk to the left side of the road, because of the red light. Because they are in the crosswalk, the driver must stop to yield and avoid a collision."}
{"id": "train_03931", "split": "train", "clip_key": "2020-0127-132751_098901_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "098901"}, "frames": ["2020-0127-132751_098901_movie_t-3.jpg", "2020-0127-132751_098901_movie_t-2.jpg", "2020-0127-132751_098901_movie_t-1.jpg", "2020-0127-132751_098901_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street has one lane in each direction divided by a solid yellow centerline; the pavement is dry and slightly worn, and traffic is light. A silver van ahead in the ego lane moves away from the ego car at a steady speed, modestly setting the pace. A white passenger van approaches in the oncoming lane to the right of the centerline and continues straight. Farther ahead, a dark box truck follows in the same oncoming stream, approaching steadily.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03932", "split": "train", "clip_key": "2020-0213-143552_078630_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "078630"}, "frames": ["2020-0213-143552_078630_movie_t-3.jpg", "2020-0213-143552_078630_movie_t-2.jpg", "2020-0213-143552_078630_movie_t-1.jpg", "2020-0213-143552_078630_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "The scene shows a suburban elevated arterial with two same-direction lanes, steel guardrails, and smooth dry pavement; traffic is light and flows steadily. A blue truck ahead in the left ego lane drives away at a constant pace and effectively sets the ego car's speed. Farther ahead in the right lane, a passenger car proceeds straight and gradually pulls ahead without interacting with the ego lane. Blue overhead direction signs are visible in the distance, and no signals appear. A small island with bollards lines the left edge near a parallel ramp, leaving a narrow shoulder but no obstruction in the lane.", "hazard_reasoning": "There is a blue truck driving in the ego lane, away from the ego car. You should follow this vehicle to maintain a safe following distance and consistent lane position."}
{"id": "train_03933", "split": "train", "clip_key": "2020-0205-103411_106699_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "106699"}, "frames": ["2020-0205-103411_106699_movie_t-3.jpg", "2020-0205-103411_106699_movie_t-2.jpg", "2020-0205-103411_106699_movie_t-1.jpg", "2020-0205-103411_106699_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-way arterial with a double yellow median and smooth asphalt approaches a signalized intersection, and same-direction traffic in the left-side lanes is queued while oncoming flow is light. A white van directly ahead in the ego lane is stopped because of congestion, blocking the path. In the adjacent right lane, a dark van slightly ahead is also stopped in the queue, limiting any chance to pass. On the far right near the sidewalk at the intersection, a cyclist rides along the curb and stays outside the ego lane. The traffic signal ahead shows yellow.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. The white van ahead is stationary due to congestion, so the driver should stop to avoid a collision under these conditions."}
{"id": "train_03934", "split": "train", "clip_key": "titan_clip_259_000168_movie", "source": {"subset": "titan", "scenario": "clip_259", "frame": "000168"}, "frames": ["titan_clip_259_000168_movie_t-3.jpg", "titan_clip_259_000168_movie_t-2.jpg", "titan_clip_259_000168_movie_t-1.jpg", "titan_clip_259_000168_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street lined with mid-rise buildings has smooth red-paved lanes and light traffic, with the ego vehicle in one of two same-direction lanes approaching an intersection. A painted divider separates these lanes from a single oncoming lane on the right. Ahead at the intersection, a cyclist comes from the right and rides across toward the center, potentially entering the ego vehicle's path. On the right curb by the crosswalk, a pedestrian with an umbrella waits and watches the roadway, possibly stepping out after the cyclist. Farther ahead in the ego lane, a white car travels straight through the junction and pulls away, not affecting the ego vehicle's pace.", "hazard_reasoning": "A pedestrian stands near the corner by the crosswalk and may step into the roadway as soon as the light changes. The driver should stop at the red light to avoid colliding with waiting vehicles or crossing pedestrians."}
{"id": "train_03935", "split": "train", "clip_key": "2020-0217-144444_011601_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "011601"}, "frames": ["2020-0217-144444_011601_movie_t-3.jpg", "2020-0217-144444_011601_movie_t-2.jpg", "2020-0217-144444_011601_movie_t-1.jpg", "2020-0217-144444_011601_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban street with trees and tall buildings features a smooth two-lane road with no median; the ego-vehicle drives in the left lane and overall traffic is light. A pedestrian wearing a cap and brown coat, carrying a book, crosses from right to left directly in front of the ego-car, entering the ego lane and temporarily occupying its path. A dark hatchback ahead in the same lane rolls forward slowly near the crossing point. Numerous cars are parked along the left curb and in bays on the right, slightly narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a cap, a brown coat and carrying a book, crossing the road from right to left, in front of the ego-car. The driver should carefully manoeuvre around the pedestrian to avoid a potential collision."}
{"id": "train_03936", "split": "train", "clip_key": "titan_clip_39_000516_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_39_000516_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_39_000516_movie_t-3_augB1.jpg", "titan_clip_39_000516_movie_t-2_augB1.jpg", "titan_clip_39_000516_movie_t-1_augB1.jpg", "titan_clip_39_000516_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around her", "environment_perception": "An urban commercial street with a single narrow shared lane and no divider, paved with bricks and in good condition, shows very light vehicle presence but many pedestrians. Ahead in the center of the lane, a woman in a white coat and black skirt walks away from the ego vehicle, occupying the travel path and constraining its pace. On the right edge near the storefronts, a man walks away along the curb within the lane and may drift toward the center as he passes signs and a parked bicycle. Farther ahead, another pedestrian crosses the lane from right to left near the shops, briefly entering the ego path. Bicycles are parked along the right sidewalk and street furniture further narrows the roadway.", "hazard_reasoning": "There is a lady, wearing a white coat and a black skirt, walking in the middle of the road, away from the ego car, because the sidewalk is congested. The driver should carefully manoeuvre to avoid collision with the pedestrian walking in the roadway due to sidewalk congestion."}
{"id": "train_03937", "split": "train", "clip_key": "titan_clip_963_000234_movie", "source": {"subset": "titan", "scenario": "clip_963", "frame": "000234"}, "frames": ["titan_clip_963_000234_movie_t-3.jpg", "titan_clip_963_000234_movie_t-2.jpg", "titan_clip_963_000234_movie_t-1.jpg", "titan_clip_963_000234_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist with no bike lane.", "environment_perception": "A narrow urban street with low-rise buildings has a single undivided two-way carriageway with no centerline and smooth asphalt, and traffic is light with no oncoming vehicles. A cyclist in a blue T-shirt rides ahead along the right side, moving away from the ego vehicle and keeping to the edge because there is no bicycle lane. Farther ahead, two pedestrians with pushcarts proceed slowly in the roadway in the same direction, occupying the path ahead. Another pedestrian walks on the right sidewalk by the yellow building. Bollards line the right edge near the sidewalk, and parked objects such as vending machines sit back on the left, leaving a clear but narrow travel lane.", "hazard_reasoning": "There is a cyclist wearing a blue t-shirt, cycling on the right side of the road, away from the ego car, because there is no bicycle lane. Drivers should be aware that the cyclist has no dedicated lane and may swerve into the vehicle's path."}
{"id": "train_03938", "split": "train", "clip_key": "2020-0206-101736_009849_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "009849"}, "frames": ["2020-0206-101736_009849_movie_t-3.jpg", "2020-0206-101736_009849_movie_t-2.jpg", "2020-0206-101736_009849_movie_t-1.jpg", "2020-0206-101736_009849_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with one lane each direction has smooth dry pavement and light traffic. A blue refuse truck ahead in the left ego lane near the curb slows behind traffic, which in turn slows the ego vehicle. A cyclist rides on the right-side sidewalk in the same direction behind a protective railing, continuing steadily without entering the roadway. No oncoming vehicles are visible as the scene progresses, and storefronts and parked scooters remain off the lane.", "hazard_reasoning": "A blue truck, slowing down in the ego lane because of the truck ahead slowing. You should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_03939", "split": "train", "clip_key": "titan_clip_1094_000132_movie", "source": {"subset": "titan", "scenario": "clip_1094", "frame": "000132"}, "frames": ["titan_clip_1094_000132_movie_t-3.jpg", "titan_clip_1094_000132_movie_t-2.jpg", "titan_clip_1094_000132_movie_t-1.jpg", "titan_clip_1094_000132_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban backstreet with one narrow lane in each direction and no centerline runs between tall buildings; the pavement is slightly worn and traffic is light, limited mainly by parked vehicles and roadside activity. Ahead, a group of pedestrians in a black shirt, a white shirt, and black pants walks away in the middle of the ego lane, occupying the path. Farther ahead on the right edge, a white flatbed truck is stopped with its rear toward the camera, narrowing the roadway. A worker stands near this truck at the curb and moves along the edge, close to the lane. Parked cars line the left side, and cones with a small excavator mark a work area on the right.", "hazard_reasoning": "There is a group of pedestrians, wearing a black shirt, a white shirt, and black pants, walking in the middle of the ego lane, away from the go car. The driver should slow down because these pedestrians are occupying the travel lane and may unexpectedly enter the vehicle's path."}
{"id": "train_03940", "split": "train", "clip_key": "titan_clip_705_000144_movie", "source": {"subset": "titan", "scenario": "clip_705", "frame": "000144"}, "frames": ["titan_clip_705_000144_movie_t-3.jpg", "titan_clip_705_000144_movie_t-2.jpg", "titan_clip_705_000144_movie_t-1.jpg", "titan_clip_705_000144_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban side street with a single narrow lane and no median runs straight between shops; the pavement looks smooth and traffic is very light as the view advances slowly. A yellow and green truck is parked on the left ahead, partly occupying the travel lane and limiting the available width for the ego vehicle to pass. No other moving vehicles are visible in the same direction or oncoming. Bicycles are densely parked along the left curb with a few cones, while storefront signs and vending machines line the right edge, creating a tight corridor without active obstructions.", "hazard_reasoning": "There is a yellow and green truck parked on the left side of the road. The parked truck partially obstructs the roadway and reduces visibility of oncoming traffic and pedestrians, so the driver should carefully manoeuvre around the obstruction."}
{"id": "train_03941", "split": "train", "clip_key": "titan_clip_1252_000258_movie", "source": {"subset": "titan", "scenario": "clip_1252", "frame": "000258"}, "frames": ["titan_clip_1252_000258_movie_t-3.jpg", "titan_clip_1252_000258_movie_t-2.jpg", "titan_clip_1252_000258_movie_t-1.jpg", "titan_clip_1252_000258_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the woman", "environment_perception": "A narrow urban two-way street with no median runs between shopfronts, the asphalt patched and worn, and there is very light vehicle traffic. Parked scooters on the left and many bicycles on the right crowd the curbs, slightly narrowing the roadway. Ahead along the left curb, a woman wearing jeans, a white T-shirt, and a sling bag walks in the roadway margin and may edge into the ego lane. In the center farther ahead, a pedestrian with a white umbrella crosses diagonally right to left, occupying the travel path and constraining pace. Very near on the right, another pedestrian stands at the curb looking at a phone, close enough to step into the lane.", "hazard_reasoning": "There is a woman wearing jeans, a white T-shirt, and a sling bag, and walking on the left side of the road. She is walking near the roadway and may unexpectedly enter the vehicle's path, so you should carefully manoeuvre around her."}
{"id": "train_03942", "split": "train", "clip_key": "2020-0227-153144_005250_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "005250"}, "frames": ["2020-0227-153144_005250_movie_t-3.jpg", "2020-0227-153144_005250_movie_t-2.jpg", "2020-0227-153144_005250_movie_t-1.jpg", "2020-0227-153144_005250_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at red light", "environment_perception": "An urban arterial with two lanes in each direction is divided by a central barrier, the pavement is smooth, and traffic is moderate with a short queue at a signalized intersection. A silver sedan is stopped directly ahead in the ego lane because the traffic light ahead is red, holding the ego vehicle. In the adjacent right lane a small van ahead waits in the same queue and proceeds no further than the sedan. Oncoming vehicles pass steadily in the right-side lanes beyond the median without affecting the ego path. The overhead signal for the ego direction shows red, and parked cars line the left curb.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop at the red light to avoid rear-ending the stopped vehicle."}
{"id": "train_03943", "split": "train", "clip_key": "2020-0220-151845_005668_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "005668"}, "frames": ["2020-0220-151845_005668_movie_t-3.jpg", "2020-0220-151845_005668_movie_t-2.jpg", "2020-0220-151845_005668_movie_t-1.jpg", "2020-0220-151845_005668_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street curves to the right beside a multi-story building, with smooth pavement and white guardrails on both sides; no vehicles or pedestrians are present, so traffic is empty. The carriageway looks narrow and two-way but no center line is visible, and the rightward bend limits forward visibility. A fenced construction site with large notice boards lines the left sidewalk. A round sign on a red pole stands by the fence, and a blue no-parking sign is posted near the corner.", "hazard_reasoning": "No immediate hazards detected; the driver can maintain current speed and lane."}
{"id": "train_03944", "split": "train", "clip_key": "2020-0204-103442_056099_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "056099"}, "frames": ["2020-0204-103442_056099_movie_t-3.jpg", "2020-0204-103442_056099_movie_t-2.jpg", "2020-0204-103442_056099_movie_t-1.jpg", "2020-0204-103442_056099_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop for congestion ahead.", "environment_perception": "An urban two-way street with one lane each direction and no median is lined with trees and apartments; the dry pavement is narrow, and traffic is heavy in both directions. A black sedan directly ahead in the ego lane slows to a near stop because of congestion up the road, constraining the ego car's pace. In the oncoming lane to the right, a white wagon and a queue of cars roll forward slowly toward the camera. On the left sidewalk, a person with a bicycle moves slowly beside the railing next to the curb.", "hazard_reasoning": "There's a black sedan slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The sedan's deceleration due to congestion may require the driver to adjust speed or prepare to stop to maintain a safe following distance."}
{"id": "train_03945", "split": "train", "clip_key": "titan_clip_238_000108_movie", "source": {"subset": "titan", "scenario": "clip_238", "frame": "000108"}, "frames": ["titan_clip_238_000108_movie_t-3.jpg", "titan_clip_238_000108_movie_t-2.jpg", "titan_clip_238_000108_movie_t-1.jpg", "titan_clip_238_000108_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban commercial street with one travel lane and smooth pavement runs between tall buildings, and traffic is light. At the foreground crosswalk, a pedestrian from the right walks left across the ego lane, occupying the path as he proceeds over the stripes. On the right curb just beyond the crosswalk, there is a silver truck parked with its rear doors open, and a worker stands at the back handling cargo, the vehicle partially narrowing the lane. Farther ahead the roadway remains clear of moving vehicles, and no traffic signals are evident at this intersection.", "hazard_reasoning": "There is a silver truck parked on the right side of the road. Drivers should carefully manoeuvre around the obstruction to avoid collision and ensure continued safe passage."}
{"id": "train_03946", "split": "train", "clip_key": "2020-0220-102630_098625_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "098625"}, "frames": ["2020-0220-102630_098625_movie_t-3.jpg", "2020-0220-102630_098625_movie_t-2.jpg", "2020-0220-102630_098625_movie_t-1.jpg", "2020-0220-102630_098625_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs beside a fenced median separating oncoming lanes to the right; the pavement is dry and intact, and traffic moves slowly with intermittent stops. Directly ahead in the ego lane, a small white tarp-covered truck is stopped, constraining the ego car because of vehicle congestion ahead. Along the left curb just ahead, a red-and-white bus waits at a stop and may merge back into the curb lane. On the separated roadway to the right, an oncoming red truck passes behind the fence with no interaction. An overhead blue guide sign points to Soka 4 km, Kasukabe 18 km, and Utsunomiya 94 km.", "hazard_reasoning": "There is a white truck stopped in the ego-car lane, because of vehicle congestion ahead. The driver should stop to avoid colliding with the stationary truck caused by the traffic backup."}
{"id": "train_03947", "split": "train", "clip_key": "titan_clip_812_000210_movie", "source": {"subset": "titan", "scenario": "clip_812", "frame": "000210"}, "frames": ["titan_clip_812_000210_movie_t-3.jpg", "titan_clip_812_000210_movie_t-2.jpg", "titan_clip_812_000210_movie_t-1.jpg", "titan_clip_812_000210_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban back street with a single lane and worn asphalt opens onto a small intersection, and there is no moving vehicle traffic. At the mouth of the alley, a pedestrian wearing a cap and green uniform walks from left to right across the intersection in front of the ego car, crossing the intended path and temporarily blocking the exit. Another person stands on the far sidewalk near a storefront without stepping into the road. Parked bicycles along the left wall and freestanding signboards on the right edge constrict the approach to the intersection.", "hazard_reasoning": "There is a pedestrian wearing a cap and a green uniform, and walking from the left side to the right side of the intersection in front of the ego-car. The pedestrian is crossing despite the red hand signal, so the driver should stop to yield and avoid a collision."}
{"id": "train_03948", "split": "train", "clip_key": "titan_clip_195_000252_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_195_000252_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_195_000252_movie_t-3_augB1.jpg", "titan_clip_195_000252_movie_t-2_augB1.jpg", "titan_clip_195_000252_movie_t-1_augB1.jpg", "titan_clip_195_000252_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban two-way street with no center divider runs between tall buildings; the pavement is smooth and traffic is light. In the ego lane ahead, a pedestrian wearing a white shirt and black pants crosses from the right to the left directly in front of the car, briefly occupying the path. Farther ahead in the same direction, a small group of scooters moves slowly along the lane, constraining the pace. Near the left edge close to the camera, a white van is stopped at the curb encroaching slightly into the lane, reducing clearance.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, crossing the street in front of the ego car, from the right side to the left side. The driver should yield because the pedestrian is in the vehicle's path and could be struck if the vehicle moves forward without slowing."}
{"id": "train_03949", "split": "train", "clip_key": "2020-0131-135401_081300_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "081300"}, "frames": ["2020-0131-135401_081300_movie_t-3.jpg", "2020-0131-135401_081300_movie_t-2.jpg", "2020-0131-135401_081300_movie_t-1.jpg", "2020-0131-135401_081300_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated roadway with a single lane in the ego direction curves gently left, flanked by concrete barriers and a noise fence; the pavement looks smooth and traffic is light with steady flow. A black car directly ahead in the ego lane follows the curve at a moderate pace, setting the ego vehicle's speed. Farther ahead, a few same-direction vehicles are spaced out along the bend. No oncoming traffic, pedestrians, or merges are visible on this viaduct. A 50 speed limit sign stands on the right side in the distance, and chevron boards line the right barrier to guide vehicles through the curve.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03950", "split": "train", "clip_key": "titan_clip_773_000276_movie", "source": {"subset": "titan", "scenario": "clip_773", "frame": "000276"}, "frames": ["titan_clip_773_000276_movie_t-3.jpg", "titan_clip_773_000276_movie_t-2.jpg", "titan_clip_773_000276_movie_t-1.jpg", "titan_clip_773_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow urban two-way street with no center line and smooth pavement runs between mid-rise buildings, with light traffic and no sidewalks; parked scooters and bicycles along both curbs locally narrow the lane. Ahead on the right edge, a tall pedestrian with short black hair in a white T-shirt and black pants walks away from the ego vehicle because there is no sidewalk, occupying part of the roadway and reducing passing space. Closer on the right, another pedestrian in a white shirt carrying bags walks toward the ego along the edge and may step slightly into the lane. No salient signals or speed signs are visible.", "hazard_reasoning": "There is a tall pedestrian with short black hair, wearing a white t-shirt and black pants, walking on the right side of the road, away from the ego car, because there is no sidewalk. The pedestrian is walking in the vehicle's path without a sidewalk, so the driver must yield to avoid a collision."}
{"id": "train_03951", "split": "train", "clip_key": "2020-0131-135401_001132_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "001132"}, "frames": ["2020-0131-135401_001132_movie_t-3.jpg", "2020-0131-135401_001132_movie_t-2.jpg", "2020-0131-135401_001132_movie_t-1.jpg", "2020-0131-135401_001132_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid center line runs between mid-rise buildings; the dry pavement looks well maintained and traffic is light. A white truck is directly ahead in the ego lane and is stopped, blocking the path and constraining the ego vehicle. On the left, several pedestrians walk along the curbside sidewalk near the truck and continue forward beside the roadway, remaining close to the travel lane and thus relevant to the maneuver around the truck. The opposing lane to the right is open in view with no immediate vehicles approaching.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane. The driver should stop to avoid colliding with the halted vehicle and to safely assess the road ahead that is obscured by the truck."}
{"id": "train_03952", "split": "train", "clip_key": "2020-0210-101957_013807_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "013807"}, "frames": ["2020-0210-101957_013807_movie_t-3.jpg", "2020-0210-101957_013807_movie_t-2.jpg", "2020-0210-101957_013807_movie_t-1.jpg", "2020-0210-101957_013807_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided overpass with two lanes in each direction rises gently, with metal guardrails and a fence median; the pavement is smooth and same-direction traffic is light while oncoming flow is steady. Ahead in the ego direction, a white truck in the left lane drives away up the grade, remaining centered and distant. To the right across the barrier, a small white van approaches in the oncoming left lane and continues past without interaction. Farther along the opposite carriageway, a gray car follows the van at a steady pace. No notable signals or signage stand out, and there are no parked vehicles, work zones, or obstacles in the roadway.", "hazard_reasoning": "There is a white truck driving in the left lane, away from the ego car. Because the truck may merge or slow unexpectedly, the driver should follow it to maintain a safe distance and anticipate its movements."}
{"id": "train_03953", "split": "train", "clip_key": "titan_clip_939_000030_movie", "source": {"subset": "titan", "scenario": "clip_939", "frame": "000030"}, "frames": ["titan_clip_939_000030_movie_t-3.jpg", "titan_clip_939_000030_movie_t-2.jpg", "titan_clip_939_000030_movie_t-1.jpg", "titan_clip_939_000030_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of crossing pedestrian", "environment_perception": "A narrow urban street with a single unmarked lane runs between storefronts, the pavement slightly worn and dry, and traffic is very light with no vehicles visible. Ahead in the middle of the road, a pedestrian wearing black pants crosses from the left to the right, moving across the ego lane and briefly occupying the path. Another pedestrian walks along the right sidewalk ahead, continuing forward and staying clear of the roadway. A third person stands near the left curb farther ahead by a shop entrance close to the lane edge. A small red plastic tray lies at the right curb near the camera but does not protrude into the lane.", "hazard_reasoning": "There is a pedestrian wearing black pants and crossing the street in the middle of the road, from the left side to the right side. The pedestrian's movement across lanes poses a collision risk, so the driver should be prepared to adjust speed or direction in response."}
{"id": "train_03954", "split": "train", "clip_key": "2020-0220-102630_032418_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "032418"}, "frames": ["2020-0220-102630_032418_movie_t-3.jpg", "2020-0220-102630_032418_movie_t-2.jpg", "2020-0220-102630_032418_movie_t-1.jpg", "2020-0220-102630_032418_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way road with red-painted lane sections and no physical median comes into view, the pavement is dry and traffic is moderate near a signalized intersection. Ahead in the ego lane, a black motorcycle slows near the intersection because a dark truck ahead is slowing, constraining the ego vehicle. The dark boxy truck or van immediately ahead continues decelerating toward the junction while holding its lane. To the right, an oncoming white sedan proceeds through the junction clear of the ego path. A posted 25 speed limit sign stands on the left and traffic signals hang over the road.", "hazard_reasoning": "There is a black motorcycle slowing near the intersection, in the ego lane, because of the truck slowing ahead on the road. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_03955", "split": "train", "clip_key": "2020-0225-145150_045183_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "045183"}, "frames": ["2020-0225-145150_045183_movie_t-3.jpg", "2020-0225-145150_045183_movie_t-2.jpg", "2020-0225-145150_045183_movie_t-1.jpg", "2020-0225-145150_045183_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes runs past midrise buildings and a fenced sidewalk on the right; the pavement is dry and traffic is heavy, moving slowly in queues. A blue mini truck directly ahead in the ego lane slows because of congestion ahead and constrains the ego vehicle's speed. In the adjacent left lane, a silver box truck slightly ahead creeps forward with the queue, limiting opportunities to merge. Farther ahead, a large white truck and several cars fill both lanes and continue slowly, setting the overall pace.", "hazard_reasoning": "There's a blue truck slowing down, in front of the ego car, in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a collision due to the truck's reduced speed."}
{"id": "train_03956", "split": "train", "clip_key": "2020-0129-144857_005702_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "005702"}, "frames": ["2020-0129-144857_005702_movie_t-3.jpg", "2020-0129-144857_005702_movie_t-2.jpg", "2020-0129-144857_005702_movie_t-1.jpg", "2020-0129-144857_005702_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield now due to stopped vehicle ahead", "environment_perception": "An urban two-way street with one lane in each direction runs between mid-rise buildings, with no median and smooth dry pavement; traffic is light as the ego-vehicle nears a signalized intersection. A black SUV stops directly ahead in the ego lane because the traffic light is flashing, holding the ego car behind it. An oncoming black sedan proceeds through the intersection in its own lane and passes by to the right. A pedestrian waits at the left curb near the intersection and may step into the roadway when the signal changes.", "hazard_reasoning": "There is a black SUV stopped in front of the ego-car, in the ego lane, because of the flashing traffic light. You should yield now to avoid a rear-end collision."}
{"id": "train_03957", "split": "train", "clip_key": "titan_clip_1151_000558_movie", "source": {"subset": "titan", "scenario": "clip_1151", "frame": "000558"}, "frames": ["titan_clip_1151_000558_movie_t-3.jpg", "titan_clip_1151_000558_movie_t-2.jpg", "titan_clip_1151_000558_movie_t-1.jpg", "titan_clip_1151_000558_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "An urban shopping street with a single narrow lane curves gently right on smooth block paving, with no median and very light vehicle traffic. Ahead on the left, a small blue truck is parked partly in the lane, narrowing the passage near the bend. In the foreground, a pedestrian with an umbrella crosses left to right across the ego path at walking pace, constraining progress. On the right by the storefront, another pedestrian walks along the curb parallel to the lane and remains near the edge. A no-entry sign is posted at a side street on the left.", "hazard_reasoning": "There is a blue truck parked on the left side of the road. Its position partially blocks the driver's view, so the driver should manoeuvre around the parked truck to maintain a clear path and avoid collisions."}
{"id": "train_03958", "split": "train", "clip_key": "2020-0207-101955_018177_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "018177"}, "frames": ["2020-0207-101955_018177_movie_t-3.jpg", "2020-0207-101955_018177_movie_t-2.jpg", "2020-0207-101955_018177_movie_t-1.jpg", "2020-0207-101955_018177_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban four-lane two-way road runs between mid-rise buildings, divided only by painted center lines; the pavement is worn but intact and traffic is moderate. Ahead in the left-side ego lane, a white mini truck slows, constraining the ego vehicle's pace. To the right, an oncoming white van approaches in the opposite-direction lane and continues straight past. Farther ahead in the oncoming stream, a silver car follows the van toward us. Bags of trash rest on the left sidewalk behind a railing, away from the roadway.", "hazard_reasoning": "There is a white mini truck slowing in the ego lane, in front of the ego car. The truck's reduced speed may require the driver to adjust their speed to maintain a safe following distance, warranting a slowdown."}
{"id": "train_03959", "split": "train", "clip_key": "2020-0203-154554_068561_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "068561"}, "frames": ["2020-0203-154554_068561_movie_t-3.jpg", "2020-0203-154554_068561_movie_t-2.jpg", "2020-0203-154554_068561_movie_t-1.jpg", "2020-0203-154554_068561_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the motorcycle ahead", "environment_perception": "An urban two-way arterial with two lanes each direction and no median; the pavement is smooth and traffic is light to moderate as the scene approaches a signalized intersection. Oncoming cars move steadily in their right-side lanes, while the ego vehicle travels in the leftmost lane for its direction. A motorcycle ahead in the ego lane rides straight at a steady pace through the crosswalk area, directly in our path and setting the pace amid light traffic. A silver car in the adjacent right lane slightly ahead continues straight, paralleling us and limiting an immediate lane change. At the left crosswalk, a bicyclist rolls forward into the crossing, which may bring them near the ego lane.", "hazard_reasoning": "There is a motorcycle driving in the ego lane due to no traffic congestion, in front of the ego car. This places the motorcycle directly ahead in your lane, so you should be aware of its movements to maintain a safe following distance and avoid sudden maneuvers."}
{"id": "train_03960", "split": "train", "clip_key": "2020-0203-114632_041068_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "041068"}, "frames": ["2020-0203-114632_041068_movie_t-3.jpg", "2020-0203-114632_041068_movie_t-2.jpg", "2020-0203-114632_041068_movie_t-1.jpg", "2020-0203-114632_041068_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with two lanes in the ego direction and a painted diagonal median appears smooth, and traffic is moderate with a short queue at an intersection. A blue van directly ahead in the ego lane is stopped at a red traffic light, constraining the ego's pace. Slightly ahead to the right, a white car in the adjacent same-direction lane is also stopped for the red and remains aligned with the queue. On the far side of the median, an oncoming black SUV travels past toward the camera, separated from the ego's path. The overhead signal ahead shows red above the intersection.", "hazard_reasoning": "There is a blue van stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to avoid a collision with the halted van and comply with the red signal."}
{"id": "train_03961", "split": "train", "clip_key": "2020-0210-155354_029162_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "029162"}, "frames": ["2020-0210-155354_029162_movie_t-3.jpg", "2020-0210-155354_029162_movie_t-2.jpg", "2020-0210-155354_029162_movie_t-1.jpg", "2020-0210-155354_029162_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be aware of broken down vehicle", "environment_perception": "An urban divided arterial with two same-direction lanes has dry, well-kept pavement and generally light flow, briefly constrained on the right. Ahead in the right lane, a black sedan is stopped with a breakdown triangle placed behind it, blocking that lane. In the left lane, a silver minivan directly ahead continues past the obstruction and effectively sets the ego vehicle's pace. At the near right edge, the front of a white car sits beside the right lane near the hazard, close enough that it may encroach. An overhead blue guide sign for Route 317 indicates Toyotama to the left and Shimochiai to the right as the roadway branches ahead.", "hazard_reasoning": "A black sedan is stopped in the right lane because of a breakdown sign behind. The disabled vehicle ahead requires the driver to stay alert and adjust speed to avoid sudden braking or collision, so be aware of its presence."}
{"id": "train_03962", "split": "train", "clip_key": "2020-0131-135401_023975_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "023975"}, "frames": ["2020-0131-135401_023975_movie_t-3.jpg", "2020-0131-135401_023975_movie_t-2.jpg", "2020-0131-135401_023975_movie_t-1.jpg", "2020-0131-135401_023975_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane road approaches a signalized intersection beneath a pedestrian overpass; the pavement is dry and clean, and traffic is moderate with a short queue. A silver hatchback directly ahead in the ego lane is stopped for the red signal, holding the ego car. In the adjacent right lane, a light truck ahead rolls forward through the junction as its lane keeps moving. The overhead traffic light facing the approach shows red, and a no-right-turn sign stands on the far-right corner. Construction cones and signs line both curbs, narrowing the edges but leaving the travel lanes clear.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid colliding with the halted vehicle and comply with the traffic signal."}
{"id": "train_03963", "split": "train", "clip_key": "2020-0212-102546_041577_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "041577"}, "frames": ["2020-0212-102546_041577_movie_t-3.jpg", "2020-0212-102546_041577_movie_t-2.jpg", "2020-0212-102546_041577_movie_t-1.jpg", "2020-0212-102546_041577_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multilane road runs under an elevated structure with a right-side guardrail and smooth, dry pavement; traffic is moderate and slow-moving. A gray van directly ahead in the ego lane slows with brake lights because of traffic congestion, constraining the ego car's pace. A small white van ahead to the left proceeds slowly in the adjacent lane at a similar speed, remaining parallel to the ego vehicle. Farther ahead, several vehicles queue under the viaduct in both lanes, keeping the flow sluggish.", "hazard_reasoning": "There is a gray van slowing in front of the ego car, in the ego lane, because of traffic congestion. The driver should follow the vehicle ahead to maintain a safe distance and adapt to slowing traffic."}
{"id": "train_03964", "split": "train", "clip_key": "2020-0131-135401_001802_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "001802"}, "frames": ["2020-0131-135401_001802_movie_t-3.jpg", "2020-0131-135401_001802_movie_t-2.jpg", "2020-0131-135401_001802_movie_t-1.jpg", "2020-0131-135401_001802_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane each way and a painted centerline is in good condition, and traffic is light with no oncoming vehicles visible. A white box truck directly ahead in the ego lane is stopped, consistent with the note that a white truck is stopped in front of the ego car, and it blocks the lane and controls the ego vehicle's pace. Several pedestrians on the right sidewalk walk past storefronts near a crosswalk but remain off the roadway.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The driver should stop because the halted truck blocks the lane ahead and poses a collision risk if not heeded."}
{"id": "train_03965", "split": "train", "clip_key": "titan_clip_776_000480_movie", "source": {"subset": "titan", "scenario": "clip_776", "frame": "000480"}, "frames": ["titan_clip_776_000480_movie_t-3.jpg", "titan_clip_776_000480_movie_t-2.jpg", "titan_clip_776_000480_movie_t-1.jpg", "titan_clip_776_000480_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian", "environment_perception": "A narrow urban two-way road with no marked centerline runs between shops and apartments, the pavement is smooth and traffic is light. Ahead in the ego lane, a pedestrian in dark clothing walks away near the middle of the road, constraining speed. On the right side, a pedestrian carrying a bag walks toward the ego vehicle along the roadway where there is no sidewalk. Farther ahead near the center, a cyclist approaches from the opposite direction at low speed. Parked bicycles and a scooter line both curbs, narrowing the usable space.", "hazard_reasoning": "A pedestrian carrying a bag is walking on the right side of the road, toward the ego car because there is no sidewalk. The pedestrian may unexpectedly step into the lane due to lack of sidewalk, so the driver should be cautious."}
{"id": "train_03966", "split": "train", "clip_key": "2020-0206-101736_017032_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "017032"}, "frames": ["2020-0206-101736_017032_movie_t-3.jpg", "2020-0206-101736_017032_movie_t-2.jpg", "2020-0206-101736_017032_movie_t-1.jpg", "2020-0206-101736_017032_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with two lanes in the ego direction runs straight on smooth pavement, divided from opposing traffic by a raised planted median with rail; overall flow is moderate with light oncoming vehicles. Ahead in the ego lane, a white truck slows down, constraining the ego car's pace. In the adjacent left lane, a black minivan travels slightly ahead and continues past the truck. At the left curb, a blue car and another small van stand near bags of trash. A signalized intersection is visible ahead.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car, in the ego lane. The slowing truck can cause the ego vehicle to brake suddenly, increasing the risk of a rear-end collision and requiring the driver to adjust speed promptly."}
{"id": "train_03967", "split": "train", "clip_key": "titan_clip_572_000096_movie", "source": {"subset": "titan", "scenario": "clip_572", "frame": "000096"}, "frames": ["titan_clip_572_000096_movie_t-3.jpg", "titan_clip_572_000096_movie_t-2.jpg", "titan_clip_572_000096_movie_t-1.jpg", "titan_clip_572_000096_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street with one lane in each direction, no median, and smooth pavement is shown, with light traffic as the ego vehicle proceeds in the left lane. A white truck is parked on the left side of the road ahead near the curb, narrowing the usable width in the ego lane. No other same-direction vehicles are immediately ahead, and there is no visible oncoming traffic in the near field. Buildings and storefronts line both sides, and no traffic signals or posted speed signs are evident.", "hazard_reasoning": "There is a white truck parked on the left side of the road. This parked truck encroaches into the travel lane and may force the driver to adjust their path, so the driver should carefully manoeuvre to avoid collision."}
{"id": "train_03968", "split": "train", "clip_key": "2020-0228-102841_078130_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "078130"}, "frames": ["2020-0228-102841_078130_movie_t-3.jpg", "2020-0228-102841_078130_movie_t-2.jpg", "2020-0228-102841_078130_movie_t-1.jpg", "2020-0228-102841_078130_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth pavement runs between tall office buildings, and traffic is moderate as vehicles queue at a signalized intersection. The ego vehicle travels in the left lane of the same-direction flow. A white van directly ahead in the ego lane is stopped for a red traffic light, holding the ego car. A motorcycle waits slightly ahead in the adjacent right lane near the stop line, aligned to go straight and not moving toward the ego lane. To the right, several cars, including a small van and a black car, are halted alongside in their lanes, forming the same queue.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to avoid colliding with the stationary vehicle ahead due to the red light."}
{"id": "train_03969", "split": "train", "clip_key": "titan_clip_546_000060_movie", "source": {"subset": "titan", "scenario": "clip_546", "frame": "000060"}, "frames": ["titan_clip_546_000060_movie_t-3.jpg", "titan_clip_546_000060_movie_t-2.jpg", "titan_clip_546_000060_movie_t-1.jpg", "titan_clip_546_000060_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian approaching.", "environment_perception": "An urban commercial corner comes into view on a narrow two-way street that curves right, with smooth asphalt, no median, and light traffic with no vehicles present. On the right edge near a tree planter, a pedestrian wearing a black dress walks toward the ego vehicle along the roadway margin and may step into the ego lane. Ahead by the glass-walled building corner, another pedestrian on the sidewalk moves toward the curb near the junction and could approach the carriageway. A zebra crosswalk is marked across the side street with no signal visible. The glass storefront corner, bollards, and planter create a partial blind turn to the right.", "hazard_reasoning": "There is a pedestrian wearing a black dress, walking on the right side of the road, towards the ego car. The pedestrian may step into the crosswalk ahead, so the driver should remain alert and prepared to slow down."}
{"id": "train_03970", "split": "train", "clip_key": "2020-0207-101955_121847_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "121847"}, "frames": ["2020-0207-101955_121847_movie_t-3.jpg", "2020-0207-101955_121847_movie_t-2.jpg", "2020-0207-101955_121847_movie_t-1.jpg", "2020-0207-101955_121847_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes, good pavement, and heavy stop-and-go flow. A white van is stopped directly ahead in the ego lane near the right curb, halted by congestion ahead and holding the ego car. In the adjacent lane to the left, a garbage truck ahead creeps forward with brake lights cycling, its slow movement paralleling the queue and potentially blocking lane changes. Farther ahead in the center lane, a large box truck remains stopped in the line of traffic, contributing to the bottleneck. A narrow curb and sidewalk line the right side without a usable shoulder.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop promptly to maintain a safe distance and avoid collision in the congested traffic."}
{"id": "train_03971", "split": "train", "clip_key": "titan_clip_467_000408_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_467_000408_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_467_000408_movie_t-3_augB1.jpg", "titan_clip_467_000408_movie_t-2_augB1.jpg", "titan_clip_467_000408_movie_t-1_augB1.jpg", "titan_clip_467_000408_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "A narrow urban shopping street with brick pavement and bollards lines both curbs, functioning as a low-speed, two-way shared lane with light vehicular traffic but many pedestrians. A tall pedestrian in dark pants carrying a backpack crosses from the left directly in front of the ego-car at an unmarked location without a crosswalk, momentarily blocking the lane. Farther ahead, a pair of pedestrians stand near the lane center and drift rightward, occupying part of the travel path. Additional pedestrians walk along both sides close to storefronts and bollards but mostly remain on the margins. No traffic signals or speed signs are apparent in the scene.", "hazard_reasoning": "There's a tall, male pedestrian wearing black pants and carrying a backpack, crossing the street from left to right in front of the ego-car because there is no crosswalk. The driver should stop to yield to the pedestrian crossing unsafely without a crosswalk to prevent a potential collision."}
{"id": "train_03972", "split": "train", "clip_key": "2020-0131-103016_022502_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "022502"}, "frames": ["2020-0131-103016_022502_movie_t-3.jpg", "2020-0131-103016_022502_movie_t-2.jpg", "2020-0131-103016_022502_movie_t-1.jpg", "2020-0131-103016_022502_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked truck.", "environment_perception": "An urban divided road with one travel lane in the ego direction runs between office buildings, separated from opposite traffic by a metal fence; pavement is dry and traffic is light. A box truck ahead in the ego lane proceeds straight at a steady pace, effectively setting the ego vehicle's speed. On the left side, two vehicles are stopped near the curb, including a white truck parked on the left, so the usable lane stays centered. On the opposite carriageway to the right, a small white van moves away from the ego path and does not affect the flow.", "hazard_reasoning": "There is a white truck parked in the left lane. It blocks part of the left lane and may force a lane change, so the driver should be aware and prepare to adjust position."}
{"id": "train_03973", "split": "train", "clip_key": "titan_clip_330_000858_movie", "source": {"subset": "titan", "scenario": "clip_330", "frame": "000858"}, "frames": ["titan_clip_330_000858_movie_t-3.jpg", "titan_clip_330_000858_movie_t-2.jpg", "titan_clip_330_000858_movie_t-1.jpg", "titan_clip_330_000858_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "The scene is an urban shopping street with a single narrow undivided lane paved with blocks, and traffic is light and slow. A motor scooter travels ahead in the center of the lane moving away from the ego-vehicle and sets the pace. From the left, a pedestrian with a large backpack walks across the lane midblock toward the right side, briefly occupying the ego path. On the right edge, a pedestrian carrying a backpack and red handbag stands at the curb and may step into the lane. Other pedestrians stay along the sides. A convex traffic mirror is mounted on the left corner.", "hazard_reasoning": "There is a pedestrian carrying a backpack and red handbag, standing on the right side of the road. The driver should manoeuvre carefully around the pedestrian to maintain safe clearance given the limited sight lines."}
{"id": "train_03974", "split": "train", "clip_key": "2020-0127-132751_056167_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "056167"}, "frames": ["2020-0127-132751_056167_movie_t-3.jpg", "2020-0127-132751_056167_movie_t-2.jpg", "2020-0127-132751_056167_movie_t-1.jpg", "2020-0127-132751_056167_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes runs alongside and beneath an elevated structure; the pavement is dry and smooth and traffic is light to moderate with brief slowing. A white sedan ahead in the ego lane is stopped, waiting to turn right, and it blocks the lane so the ego vehicle queues behind. In the adjacent right lane, a dark hatchback continues straight past the stopped car and pulls ahead. Farther ahead, another small car proceeds in the same direction without affecting the ego path. An overhead blue direction sign lists destinations including Gotanda, Magome, and Maruko Bridge, and pedestrians walk along the left sidewalk behind railings.", "hazard_reasoning": "A white sedan is stopped in front of the ego car in the ego lane, because it is waiting to turn right. The ego-vehicle may collide if it maintains its speed, so the driver should slow down to maintain a safe following distance."}
{"id": "train_03975", "split": "train", "clip_key": "2020-0218-103119_038652_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "038652"}, "frames": ["2020-0218-103119_038652_movie_t-3.jpg", "2020-0218-103119_038652_movie_t-2.jpg", "2020-0218-103119_038652_movie_t-1.jpg", "2020-0218-103119_038652_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban two-way road runs between mid-rise buildings, with one lane per direction, no physical median, smooth asphalt, and a steady oncoming flow. Directly ahead in the ego lane, a white box truck is stopped in front of the ego car, blocking the path and holding the ego vehicle stationary. To the right, several oncoming cars progress in their lane at low to moderate speed, passing opposite the ego and occupying the adjacent space. A narrow bicycle lane and guardrail line the left curb, with no cyclists visible.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The driver should stop immediately to avoid rear-ending the halted truck."}
{"id": "train_03976", "split": "train", "clip_key": "titan_clip_978_000528_movie", "source": {"subset": "titan", "scenario": "clip_978", "frame": "000528"}, "frames": ["titan_clip_978_000528_movie_t-3.jpg", "titan_clip_978_000528_movie_t-2.jpg", "titan_clip_978_000528_movie_t-1.jpg", "titan_clip_978_000528_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cyclist", "environment_perception": "An urban residential scene shows a narrow two-way road without a centerline, bordered by close-set houses and curbs; the pavement looks smooth and traffic is very light. The ego vehicle proceeds along the left side on a straight segment. An oncoming cyclist wearing a white shirt rides ahead along the right edge toward the ego car, approaching steadily and constraining space in the narrow lane. No other moving road users are visible, and there are no evident obstacles or work zones.", "hazard_reasoning": "There is a cyclist wearing a white shirt and cycling on the right side of the road, toward the ego car. The cyclist is approaching the vehicle's path, so you should manoeuvre carefully around them to maintain safe clearance."}
{"id": "train_03977", "split": "train", "clip_key": "2020-0210-155354_035959_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "035959"}, "frames": ["2020-0210-155354_035959_movie_t-3.jpg", "2020-0210-155354_035959_movie_t-2.jpg", "2020-0210-155354_035959_movie_t-1.jpg", "2020-0210-155354_035959_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with the stationary vehicle ahead.", "environment_perception": "An urban arterial with three same-direction lanes runs through dense midrise buildings; the asphalt is smooth and traffic is heavy in stop-and-go flow. A black hatchback is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle. To the right, a delivery scooter with a yellow box creeps forward between the lanes and passes close to the ego car as it filters ahead. In the left lane, a white van slightly ahead inches forward with the queue, remaining parallel to the ego vehicle. Overhead blue direction signs are visible above the roadway.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car in the ego lane, because of traffic congestion. Stop to avoid collision with the stationary vehicle ahead."}
{"id": "train_03978", "split": "train", "clip_key": "2020-0213-143552_025042_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "025042"}, "frames": ["2020-0213-143552_025042_movie_t-3.jpg", "2020-0213-143552_025042_movie_t-2.jpg", "2020-0213-143552_025042_movie_t-1.jpg", "2020-0213-143552_025042_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban, signalized multi-lane intersection with smooth pavement and broad zebra crosswalks lies ahead, and traffic is moderate as the cross street keeps moving while the ego approach waits. A black motorcycle directly ahead in the ego lane is stopped at the stop line because the light is red, holding the ego-car behind. Several vehicles on the cross street, including a silver minivan and multiple sedans, pass left and right through the junction, keeping the path blocked. A white van to the near left in the adjacent same-direction lane is also stationary beside the ego. Groups of pedestrians stand on the near-left corner and on the far sidewalks, waiting to cross. The overhead signal facing the ego shows red.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego-car, in the ego lane, because of a red traffic light ahead. The driver should stop to avoid colliding with the stationary motorcycle at the red light."}
{"id": "train_03979", "split": "train", "clip_key": "2020-0131-135401_017591_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "017591"}, "frames": ["2020-0131-135401_017591_movie_t-3.jpg", "2020-0131-135401_017591_movie_t-2.jpg", "2020-0131-135401_017591_movie_t-1.jpg", "2020-0131-135401_017591_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the van to avoid a collision.", "environment_perception": "An urban multilane road with smooth pavement runs beneath elevated structures, with three same-direction lanes and a blue-marked curbside cycle lane, separated from other carriageways by railings; traffic is light and briefly stationary at a signalized intersection. A black van is stopped directly ahead in the ego lane at a red light, holding the ego vehicle. A silver hatchback ahead to the left waits in the adjacent lane, slightly angled as if preparing to turn left, and does not encroach on the ego path. On the far right of the junction, a car on the cross street moves through the intersection and clears the area. The traffic signal ahead shows red.", "hazard_reasoning": "There is a black van stopped in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe following distance and obey the signal to avoid a collision."}
{"id": "train_03980", "split": "train", "clip_key": "titan_clip_934_000510_movie", "source": {"subset": "titan", "scenario": "clip_934", "frame": "000510"}, "frames": ["titan_clip_934_000510_movie_t-3.jpg", "titan_clip_934_000510_movie_t-2.jpg", "titan_clip_934_000510_movie_t-1.jpg", "titan_clip_934_000510_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban street with no center divider and worn but dry pavement shows light same-direction traffic as parked vehicles on both sides narrow the usable lane. Ahead in the ego lane, a white van pulls away through a green traffic light, steadily increasing the gap from the ego car. At the right curb, a box truck is stopped with its tail lift deployed, and a worker stands on the lift at the edge of the lane, reducing the passage width. On the left sidewalk, pedestrians walk along the curb and pause near shop fronts while remaining off the roadway. A white sedan is parked in a marked bay on the left, further constricting the lane.", "hazard_reasoning": "There is a white van driving away from the ego car, in the ego lane in front of the ego car, because of the green traffic light. Due to the partially obstructing parked truck, the driver should maintain safe distance by following the vehicle ahead to stay within the cleared path."}
{"id": "train_03981", "split": "train", "clip_key": "2020-0218-103119_008272_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "008272"}, "frames": ["2020-0218-103119_008272_movie_t-3.jpg", "2020-0218-103119_008272_movie_t-2.jpg", "2020-0218-103119_008272_movie_t-1.jpg", "2020-0218-103119_008272_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "A dense urban residential street with mid-rise buildings has a very narrow two-way carriageway, no median, green edge lanes, smooth pavement, and light traffic. A white box truck directly ahead in the ego lane slows, constraining the ego car's speed. On the left edge just ahead, a pedestrian walks away along the curb near the truck, close to the travel path and relevant to the ego lane. Farther beyond the truck, a white van is visible in the opposing lane facing the ego direction. A bicycle is parked against the right wall.", "hazard_reasoning": "There is a white RV slowing in front of the ego car, in the ego lane. Slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_03982", "split": "train", "clip_key": "2020-0226-101332_012098_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "012098"}, "frames": ["2020-0226-101332_012098_movie_t-3.jpg", "2020-0226-101332_012098_movie_t-2.jpg", "2020-0226-101332_012098_movie_t-1.jpg", "2020-0226-101332_012098_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the merging van.", "environment_perception": "An urban two-way street with one narrow lane in each direction runs between mid-rise buildings, with no median and patched pavement; traffic is light. A small red van ahead in the ego lane has just cut in and continues straight at modest speed, occupying the ego vehicle's path and constraining pace. In the oncoming lane, a white truck approaches and proceeds straight past while staying in its lane. Several pedestrians on both sidewalks walk along near the curb and remain clear of the roadway. An overhead pedestrian walkway spans the road, and cones and railings line the curbs.", "hazard_reasoning": "There is a red van that has cut-in into the ego lane, in front of the ego car. The red van's sudden lane change into your lane can require immediate speed or steering adjustment, so you should be cautious to avoid a collision."}
{"id": "train_03983", "split": "train", "clip_key": "2020-0214-102601_026304_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "026304"}, "frames": ["2020-0214-102601_026304_movie_t-3.jpg", "2020-0214-102601_026304_movie_t-2.jpg", "2020-0214-102601_026304_movie_t-1.jpg", "2020-0214-102601_026304_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "In a dense urban corridor, the ego-vehicle travels on a wide multi-lane arterial with smooth pavement and slow, congested same-direction traffic approaching a signalized intersection. A white box truck directly ahead in the ego lane slows because of traffic congestion ahead, setting the ego vehicle's pace. Slightly ahead to the right, a dark green sedan also decelerates in its lane as it nears the queue. Farther ahead in the central lanes, a large coach brakes into the line of vehicles near the junction. On the far right, a motorcyclist edges forward along the lane beside the slow traffic. Several delivery vans and a large truck are stopped at the left curb near the crosswalk, reducing available shoulder space. Overhead traffic lights and city signs are visible at the intersection.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because of traffic congestion ahead. The white truck's deceleration signals congested traffic ahead, requiring the driver to reduce speed to maintain a safe following distance."}
{"id": "train_03984", "split": "train", "clip_key": "2020-0207-151349_042625_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "042625"}, "frames": ["2020-0207-151349_042625_movie_t-3.jpg", "2020-0207-151349_042625_movie_t-2.jpg", "2020-0207-151349_042625_movie_t-1.jpg", "2020-0207-151349_042625_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of slowing traffic ahead", "environment_perception": "An urban elevated two-lane road with concrete side barriers and smooth pavement runs beneath an overhead structure; the ego vehicle travels in the left lane and traffic is heavy with stop-and-go movement. Ahead in the ego lane, a silver hatchback inches forward in short bursts because congestion ahead keeps it nearly stopped, effectively setting the ego vehicle's pace. In the adjacent right lane slightly ahead, a large box truck creeps at a similar speed, remaining parallel to the hatchback. More vehicles queue farther ahead in both lanes. Bright sun glare from the front left and alternating shadows from the structure lower scene contrast.", "hazard_reasoning": "There is a silver hatchback inching forward in the ego lane, because of traffic congestion ahead. The driver should be aware of the slowing traffic to avoid potential sudden stops due to congestion."}
{"id": "train_03985", "split": "train", "clip_key": "titan_clip_120_000276_movie", "source": {"subset": "titan", "scenario": "clip_120", "frame": "000276"}, "frames": ["titan_clip_120_000276_movie_t-3.jpg", "titan_clip_120_000276_movie_t-2.jpg", "titan_clip_120_000276_movie_t-1.jpg", "titan_clip_120_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking on left side.", "environment_perception": "A narrow urban street with no center divider runs between buildings, the smooth pavement marked by edge lines and a slight right bend; traffic is very light with no moving vehicles ahead or oncoming. Ahead on the left, a pedestrian wearing a blue shirt and black pants walks away along the road edge, remaining near the wall but within the carriageway and therefore relevant to the ego lane. Farther ahead near the center, another pedestrian also walks away in the lane, briefly occupying the travel path and potentially constraining pace. Parked bicycles sit along the right outside a shop, clear of the roadway.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, and walking on the left side of the road, away from the ego car. The driver should be aware of this pedestrian since they could unexpectedly step into the lane."}
{"id": "train_03986", "split": "train", "clip_key": "titan_clip_779_000024_movie", "source": {"subset": "titan", "scenario": "clip_779", "frame": "000024"}, "frames": ["titan_clip_779_000024_movie_t-3.jpg", "titan_clip_779_000024_movie_t-2.jpg", "titan_clip_779_000024_movie_t-1.jpg", "titan_clip_779_000024_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban residential two-way street with no center divider runs straight between close buildings, the asphalt smooth and narrow, and traffic is light with no vehicles ahead or oncoming. A side street branches from the right near the foreground, marked on the pavement. On the left edge ahead, a pedestrian wearing a black T-shirt and white pants with a backpack walks toward the ego vehicle along the curb, close to the travel lane and relevant to the ego path. Farther ahead on the left, two other pedestrians proceed in the same direction as the car, keeping to the building line and not affecting its lane. Planters and utility poles line the right side, reducing the shoulder space.", "hazard_reasoning": "There's a pedestrian wearing a black t-shirt and white pants, carrying a backpack, and walking on the left side of the road toward the ego car. The driver should be aware of the pedestrian ahead because they are moving into the vehicle's path and may step into the lane unexpectedly."}
{"id": "train_03987", "split": "train", "clip_key": "2020-0228-102841_000910_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_000910_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_000910_movie_t-3_augB1.jpg", "2020-0228-102841_000910_movie_t-2_augB1.jpg", "2020-0228-102841_000910_movie_t-1_augB1.jpg", "2020-0228-102841_000910_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian in roadway", "environment_perception": "An urban side street is shown, with a very narrow two-way road lacking a centerline; the asphalt looks smooth and traffic is light. Buildings and shutters sit close to the curb, tightening sight lines as the road bends gently right. Ahead in the middle of the roadway, a pedestrian wearing brown pants walks away from the ego car, occupying the ego path and effectively controlling the vehicle's pace. No other moving vehicles are visible nearby in either direction, and there are no salient traffic signals or posted speeds in view. A utility pole and storefronts line the left edge, and no parked vehicles or debris extend into the lane.", "hazard_reasoning": "There's a pedestrian wearing brown pants walking in the middle of the road, away from the ego car. The pedestrian's position in the roadway is unpredictable and poses a collision risk, so the driver should be cautious to avoid an accident."}
{"id": "train_03988", "split": "train", "clip_key": "titan_clip_296_000552_movie", "source": {"subset": "titan", "scenario": "clip_296", "frame": "000552"}, "frames": ["titan_clip_296_000552_movie_t-3.jpg", "titan_clip_296_000552_movie_t-2.jpg", "titan_clip_296_000552_movie_t-1.jpg", "titan_clip_296_000552_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban residential street with no median runs between closely spaced buildings; the asphalt is smooth and traffic is light with no moving vehicles visible. A dark van stands ahead along the left curb, protruding slightly into the ego lane and constraining the available width as the car proceeds straight. Several bicycles are parked along storefronts on the left, and an open garage and recessed driveways line the right. No traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking in the ego lane, on the left side of the road, away from the ego car. Driver should carefully manoeuvre around the pedestrian to avoid a collision given their position in the ego lane."}
{"id": "train_03989", "split": "train", "clip_key": "2020-0205-103411_119693_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "119693"}, "frames": ["2020-0205-103411_119693_movie_t-3.jpg", "2020-0205-103411_119693_movie_t-2.jpg", "2020-0205-103411_119693_movie_t-1.jpg", "2020-0205-103411_119693_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane arterial carries two lanes in the ego direction, bordered by a left-side guardrail on smooth pavement; traffic is moderate and presently queued. An overhead traffic light near a pedestrian footbridge shows red. A black hatchback directly ahead in the ego lane is stopped, holding the ego car because of the red light. In the adjacent right lane, a large cement mixer truck waits slightly ahead, aligned with the ego vehicle. Farther ahead left, a white car in the neighboring lane also waits at the light.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The stopped hatchback indicates a red light requiring the ego vehicle to stop to avoid a collision."}
{"id": "train_03990", "split": "train", "clip_key": "2020-0227-153144_006039_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "006039"}, "frames": ["2020-0227-153144_006039_movie_t-3.jpg", "2020-0227-153144_006039_movie_t-2.jpg", "2020-0227-153144_006039_movie_t-1.jpg", "2020-0227-153144_006039_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial with smooth pavement and painted dividers runs between mid-rise buildings, and traffic moves at a slow, moderately heavy pace toward a signalized intersection. A gray sedan directly ahead in the ego lane slows in queue because of congestion ahead. A black van slightly ahead to the left in the adjacent same-direction lane also decelerates, pacing the flow beside the ego vehicle. On the far right, a cyclist moves slowly along the curb beyond double white lines near the crosswalk, remaining outside the ego lane. The traffic light ahead shows green.", "hazard_reasoning": "There is a gray sedan slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The slowing sedan indicates reduced traffic flow and following it at a safe distance will help avoid a collision."}
{"id": "train_03991", "split": "train", "clip_key": "2020-0213-143552_034395_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "034395"}, "frames": ["2020-0213-143552_034395_movie_t-3.jpg", "2020-0213-143552_034395_movie_t-2.jpg", "2020-0213-143552_034395_movie_t-1.jpg", "2020-0213-143552_034395_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with dry, smooth pavement, a curb on the left and a guardrail on the right; traffic is moderate and occasionally bunches. A white box truck ahead in the ego lane slows due to congestion ahead, constraining the ego vehicle's pace. Slightly to the right, a smaller white truck continues in the adjacent lane at a steady speed, limiting an immediate right-lane change. In the left lane a dark van just ahead moves forward past several parked cars near the curb, narrowing space at the edge. Pedestrians walk along the left sidewalk behind a railing. An overhead sign provides lane guidance with straight and right-turn arrows.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to adjust to reduced traffic flow and maintain a safe following distance."}
{"id": "train_03992", "split": "train", "clip_key": "2020-0226-101332_058684_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "058684"}, "frames": ["2020-0226-101332_058684_movie_t-3.jpg", "2020-0226-101332_058684_movie_t-2.jpg", "2020-0226-101332_058684_movie_t-1.jpg", "2020-0226-101332_058684_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A dense urban arterial with three same-direction lanes runs alongside a hedge median, the pavement smooth and dry, with moderate traffic that slows in the left lanes while the right lane flows better. In the lane to the left of the ego vehicle, a gray truck ahead is stopped in a short queue because of congestion ahead, holding vehicles beside the ego car. Farther left near the curb, a white van and several cars creep forward in the line, sustaining the slowdown. In the ego lane, a few cars ahead move steadily with larger gaps, keeping the path relatively clear. Overhead blue direction signs and a pedestrian overpass span the roadway.", "hazard_reasoning": "There is a gray truck that has stopped in the lane to the left of the ego-car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid sudden braking due to the stopped vehicle."}
{"id": "train_03993", "split": "train", "clip_key": "2020-0203-154554_026519_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "026519"}, "frames": ["2020-0203-154554_026519_movie_t-3.jpg", "2020-0203-154554_026519_movie_t-2.jpg", "2020-0203-154554_026519_movie_t-1.jpg", "2020-0203-154554_026519_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial runs between tall buildings, divided from the opposite carriageway by a low hedge median; the asphalt looks smooth and traffic flows at a moderate, steady pace. A white van ahead in the ego lane moves forward at a constant speed and effectively sets the ego vehicle's pace. On the left, a dark car comes up alongside from slightly behind in the left lane, limiting any immediate move left. Farther ahead in the left lane, a white sedan proceeds straight at a similar speed without changing lanes, while another small van continues ahead in the right lane with clear spacing. Blue directional signs mounted on a pedestrian overpass span the roadway.", "hazard_reasoning": "There is a white van in forward motion in the ego lane in front of the ego car. The van ahead could brake suddenly or change speed without warning, requiring the driver to maintain a safe following distance and be prepared to react promptly."}
{"id": "train_03994", "split": "train", "clip_key": "2020-0220-151845_063137_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "063137"}, "frames": ["2020-0220-151845_063137_movie_t-3.jpg", "2020-0220-151845_063137_movie_t-2.jpg", "2020-0220-151845_063137_movie_t-1.jpg", "2020-0220-151845_063137_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban road runs under an elevated structure with two same-direction lanes bordered by guardrails; the dry pavement looks sound and traffic is light and steady. A pink and yellow truck directly ahead in the ego lane is slowing, constraining the ego vehicle's pace. To the right, a small black car slightly ahead in the adjacent lane continues straight and gradually pulls ahead, overtaking the slowing truck without entering the ego lane. Farther ahead, a few vehicles move away with ample gaps.", "hazard_reasoning": "The pink and yellow truck is slowing in front of the ego car, in the ego lane. The truck's deceleration could require the driver to reduce speed to maintain a safe following distance, so a timely speed adjustment is needed."}
{"id": "train_03995", "split": "train", "clip_key": "2020-0205-103411_048007_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "048007"}, "frames": ["2020-0205-103411_048007_movie_t-3.jpg", "2020-0205-103411_048007_movie_t-2.jpg", "2020-0205-103411_048007_movie_t-1.jpg", "2020-0205-103411_048007_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban boulevard with multiple same-direction lanes is divided by a center fence, the pavement dry and smooth, and traffic light to moderate. Ahead of the ego vehicle, a black sedan from the left lane shifts right into the ego lane, occupying the space in front as it merges. Farther ahead, a person crosses the zebra crossing from left to right across the ego lane. On the right curb, several white vans and a truck stand stopped, narrowing the outer lane. Beyond the median, oncoming cars and trucks move steadily in the opposite direction.", "hazard_reasoning": "There is a black sedan changing lanes to the ego lane from the left lane. The sedan is merging into your lane unexpectedly, so you should slow down to maintain a safe following distance."}
{"id": "train_03996", "split": "train", "clip_key": "2020-0127-132751_098143_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "098143"}, "frames": ["2020-0127-132751_098143_movie_t-3.jpg", "2020-0127-132751_098143_movie_t-2.jpg", "2020-0127-132751_098143_movie_t-1.jpg", "2020-0127-132751_098143_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane per direction is separated by a painted hatched median with cones; the pavement is dry and traffic is light and steady. A silver van ahead in the ego lane continues at a moderate pace toward a junction under a green traffic light, subtly setting the ego vehicle's speed. In the opposing lane to the right, a white van approaches past the median, remaining well separated from the ego path. Pedestrians walk along the left sidewalk near a bus stop, moving parallel to traffic and staying off the carriageway. Overhead signals before the intersection display green.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_03997", "split": "train", "clip_key": "titan_clip_525_000450_movie", "source": {"subset": "titan", "scenario": "clip_525", "frame": "000450"}, "frames": ["titan_clip_525_000450_movie_t-3.jpg", "titan_clip_525_000450_movie_t-2.jpg", "titan_clip_525_000450_movie_t-1.jpg", "titan_clip_525_000450_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking towards vehicle", "environment_perception": "An urban neighborhood street with shops lines both sides; it is a narrow two-way road with one lane per direction, no median, smooth pavement, and light traffic. A scooter ahead in the ego lane moves away toward a nearby intersection, slightly constraining the ego vehicle's pace. Two pedestrians emerge from the right and cross ahead from right to left, occupying the ego lane as they proceed. On the right side near the curb, a woman carrying an umbrella and wearing a black skirt walks toward the ego car, close enough that she may step into the lane. Tight curbs and storefront fixtures border the roadway, leaving limited clearance.", "hazard_reasoning": "There is a woman carrying an umbrella, wearing a black skirt, and walking towards the ego car, on the right side of the road. You should be aware of her presence and be prepared to slow down to avoid a collision."}
{"id": "train_03998", "split": "train", "clip_key": "2020-0220-102630_026387_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "026387"}, "frames": ["2020-0220-102630_026387_movie_t-3.jpg", "2020-0220-102630_026387_movie_t-2.jpg", "2020-0220-102630_026387_movie_t-1.jpg", "2020-0220-102630_026387_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban street with two same-direction lanes and no median is shown, the pavement smooth and traffic heavy and momentarily stopped. Directly ahead in the ego lane, a white box truck is stopped because congestion blocks the flow, holding the ego vehicle in place. In the adjacent right lane, a tarpaulin-covered truck sits slightly ahead and is also stopped in the same direction, running alongside and obscuring the right-side view. Buildings line both sides and a sidewalk with a metal guardrail borders the left edge of the lane, and no other road users or controls visibly affect the scene.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion. The stopped truck indicates slowed or halted traffic ahead, so the driver should stop immediately to maintain a safe following distance."}
{"id": "train_03999", "split": "train", "clip_key": "titan_clip_917_000054_movie", "source": {"subset": "titan", "scenario": "clip_917", "frame": "000054"}, "frames": ["titan_clip_917_000054_movie_t-3.jpg", "titan_clip_917_000054_movie_t-2.jpg", "titan_clip_917_000054_movie_t-1.jpg", "titan_clip_917_000054_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian", "environment_perception": "A narrow urban commercial street with a single vehicle lane and smooth pavement shows light traffic with no moving cars. A pedestrian wearing a white T-shirt, black shorts, and a backpack walks away from the ego car along the left side of the lane, occupying the driving path. Two pedestrians ahead near the center also walk away in the lane, reducing available space. On the right ahead, a blue truck is parked with orange cones, narrowing the lane, while two pedestrians move alongside it close to the roadway. No traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, black pants and carrying a backpack, walking on the left side of the road, away from the ego car. The pedestrian could step into the lane unexpectedly, so the driver should remain cautious to avoid a potential collision."}
{"id": "train_04000", "split": "train", "clip_key": "2020-0203-154554_054600_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "054600"}, "frames": ["2020-0203-154554_054600_movie_t-3.jpg", "2020-0203-154554_054600_movie_t-2.jpg", "2020-0203-154554_054600_movie_t-1.jpg", "2020-0203-154554_054600_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of the white van", "environment_perception": "An urban arterial under an elevated expressway carries three same-direction lanes with a guardrail median separating oncoming traffic to the right; the pavement is smooth and traffic is light to moderate with steady flow. Ahead of the ego vehicle, a white van changes from the ego lane into the left lane, crossing in front while keeping pace. Farther ahead in the center lanes, a small white microvan continues straight at a steady speed and loosely sets the flow. On the far left near the curb, a box truck stands stationary, partially occupying the lane and narrowing space. Overhead blue guide signs for destinations are visible above the roadway.", "hazard_reasoning": "There is a white van lane changing in front of the ego car, from the ego lane to the left lane. The white van is merging into the left lane ahead of the ego-vehicle, which could reduce available space and require the driver to adjust speed or steering to maintain a safe distance."}
{"id": "train_04001", "split": "train", "clip_key": "2020-0227-104226_002370_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "002370"}, "frames": ["2020-0227-104226_002370_movie_t-3.jpg", "2020-0227-104226_002370_movie_t-2.jpg", "2020-0227-104226_002370_movie_t-1.jpg", "2020-0227-104226_002370_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid rear-ending the SUV.", "environment_perception": "An urban multi-lane arterial runs between large commercial buildings, with smooth pavement and a low median separating a right-side bus lane; traffic is heavy and slow. A silver SUV directly ahead in the ego lane comes to a stop because congestion stacks up ahead, holding the ego vehicle. Ahead-right, a city bus in the separated lane slows near a stop and then creeps forward with the queue, pacing the ego vehicle. To the right, a white van proceeds in the bus lane and overtakes, moving slightly faster than the ego's lane. A pedestrian overpass spans the road and railings confine crowds on the left sidewalk.", "hazard_reasoning": "There is a silver SUV stopping in the ego lane, in front of the ego car, because of traffic congestion ahead. The abrupt stop of the SUV creates a risk of a rear-end collision if the driver does not react promptly."}
{"id": "train_04002", "split": "train", "clip_key": "titan_clip_942_000018_movie", "source": {"subset": "titan", "scenario": "clip_942", "frame": "000018"}, "frames": ["titan_clip_942_000018_movie_t-3.jpg", "titan_clip_942_000018_movie_t-2.jpg", "titan_clip_942_000018_movie_t-1.jpg", "titan_clip_942_000018_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the stopped truck", "environment_perception": "A narrow urban two-way road without a median has smooth pavement and light traffic as the ego vehicle proceeds along the left side. On the right shoulder near the camera, a white box truck is stopped, occupying part of the lane and reducing clearance. Farther ahead, an oncoming white truck advances slowly near the road center to pass the stopped vehicle, potentially entering the ego lane. At the left edge close to the ego, a pedestrian stands by the curb beside the storefronts, close to the roadway but not stepping out.", "hazard_reasoning": "There is a white truck stopped on the right side of the road. This stopped vehicle partially obstructs the lane and creates a blind spot, so the driver should manoeuvre carefully to avoid collision."}
{"id": "train_04003", "split": "train", "clip_key": "titan_clip_834_000222_movie", "source": {"subset": "titan", "scenario": "clip_834", "frame": "000222"}, "frames": ["titan_clip_834_000222_movie_t-3.jpg", "titan_clip_834_000222_movie_t-2.jpg", "titan_clip_834_000222_movie_t-1.jpg", "titan_clip_834_000222_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist ahead", "environment_perception": "A narrow urban street with block paving and a single shared lane runs between shops; the surface is good and traffic is light and slow. Ahead, a person in a blue-and-white shirt cycles in the middle of the lane away from the ego vehicle, effectively setting the pace. On the right edge, a pedestrian walks toward the camera along the curb while staying out of the lane. On the left, another pedestrian walks ahead near the building line, remaining clear of the vehicle's path.", "hazard_reasoning": "There is a pedestrian wearing a blue-and-white-shirt, cycling in the middle of the road, away from the ego car. The driver should be aware because the cyclist may move unpredictably into the lane ahead."}
{"id": "train_04004", "split": "train", "clip_key": "titan_clip_1228_000588_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1228_000588_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1228_000588_movie_t-3_augB1.jpg", "titan_clip_1228_000588_movie_t-2_augB1.jpg", "titan_clip_1228_000588_movie_t-1_augB1.jpg", "titan_clip_1228_000588_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way side street without a centerline runs between close buildings; the pavement looks worn and traffic is very light. The ego vehicle proceeds along the left edge. Ahead in the middle of the road, a pedestrian wearing a black shirt and shorts walks away from the ego car, occupying the path and constraining speed. Slightly farther ahead by the left curb, another pedestrian walks in the same direction along the edge and may drift into the lane. A white car is parked partly out from a bay on the left, further narrowing the passage and reducing clearance.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and shorts, walking in the middle of the road, away from the ego car. The driver should slow down because a person on the roadway may step unpredictably, increasing collision risk."}
{"id": "train_04005", "split": "train", "clip_key": "titan_clip_930_000270_movie", "source": {"subset": "titan", "scenario": "clip_930", "frame": "000270"}, "frames": ["titan_clip_930_000270_movie_t-3.jpg", "titan_clip_930_000270_movie_t-2.jpg", "titan_clip_930_000270_movie_t-1.jpg", "titan_clip_930_000270_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "An urban multi-lane arterial with smooth dry pavement and a metal guardrail median separates directions; traffic is light and steady. A small black van directly ahead in the ego lane continues straight at a constant speed and sets the pace. Farther ahead, a few cars in the adjacent right lanes also travel straight without lane changes and pose no immediate interaction. To the right beyond the median, sparse oncoming traffic flows in the opposite direction and remains separated. On the left sidewalk, two pedestrians walk along storefronts near the curb and stay out of the roadway. Blue overhead direction signs and lane arrows indicating a right-turn option are visible.", "hazard_reasoning": "There is a gray van parked on the left side of the road, that is being unloaded. The van's unloading activity and parked position could require manoeuvring to avoid collision."}
{"id": "train_04006", "split": "train", "clip_key": "titan_clip_1147_000168_movie", "source": {"subset": "titan", "scenario": "clip_1147", "frame": "000168"}, "frames": ["titan_clip_1147_000168_movie_t-3.jpg", "titan_clip_1147_000168_movie_t-2.jpg", "titan_clip_1147_000168_movie_t-1.jpg", "titan_clip_1147_000168_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street curves gently right with no median and worn asphalt, and traffic is light. A white box truck ahead in the ego lane moves slowly toward the bend, setting the pace. A pedestrian wearing shorts and a face mask is in the middle of the road ahead, crossing toward the right curb and briefly occupying the ego path. A large service truck is stopped along the left edge near the camera, encroaching slightly into the lane. A white car is parked at the right curb near the corner, and construction fencing lines the right side, tightening the passage and limiting the view around the bend.", "hazard_reasoning": "There is a pedestrian wearing shorts and a face mask in the middle of the road, crossing to the right side of the road. The driver should slow down to ensure the pedestrian can cross safely and avoid a collision."}
{"id": "train_04007", "split": "train", "clip_key": "2020-0227-153144_031969_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-153144_031969_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-153144_031969_movie_t-3_augB1.jpg", "2020-0227-153144_031969_movie_t-2_augB1.jpg", "2020-0227-153144_031969_movie_t-1_augB1.jpg", "2020-0227-153144_031969_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with dry pavement carries heavy, stop-and-go traffic throughout. A white minivan directly ahead in the ego lane slows and creeps forward in the queue, constraining the ego car's pace because of traffic congestion. A small tarp-covered light truck is alongside in the right adjacent lane, moving slowly in parallel and remaining close to the ego vehicle. Farther ahead in the right lane, another white van inches forward with the queue and limits the view down the road. Pedestrians walk along the left sidewalk and remain off the roadway.", "hazard_reasoning": "There is a white minivan slowing down in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to match the reduced speed ahead and maintain a safe following distance."}
{"id": "train_04008", "split": "train", "clip_key": "titan_clip_643_000414_movie", "source": {"subset": "titan", "scenario": "clip_643", "frame": "000414"}, "frames": ["titan_clip_643_000414_movie_t-3.jpg", "titan_clip_643_000414_movie_t-2.jpg", "titan_clip_643_000414_movie_t-1.jpg", "titan_clip_643_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian", "environment_perception": "An urban two-way street with one lane each direction and no median appears, bordered by buildings; the pavement is smooth and traffic is light. A white van is stopped ahead along the left curb, protruding into the ego lane and constraining the path. A pedestrian wearing a black T-shirt and black pants walks beside the van toward its door to enter, moving in the roadway close to the ego lane and forming a near-side obstruction. An oncoming car travels toward the camera in the right lane farther ahead, proceeding steadily in its own lane. Bicycles are parked on the left sidewalk and no salient signals or signs are evident.", "hazard_reasoning": "a pedestrian wearing a black t-shirt with black pant is walking on the left side of the road close to the ego lane because he's entering the parked vehicle. The pedestrian's proximity to the traffic lane may lead him to step into your path, so be aware of pedestrian."}
{"id": "train_04009", "split": "train", "clip_key": "2020-0129-105040_069753_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "069753"}, "frames": ["2020-0129-105040_069753_movie_t-3.jpg", "2020-0129-105040_069753_movie_t-2.jpg", "2020-0129-105040_069753_movie_t-1.jpg", "2020-0129-105040_069753_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of merging van ahead", "environment_perception": "An urban residential two-lane road with a solid center line approaches a small signalized intersection with a zebra crosswalk; the pavement is dry and traffic is light. Ahead at the junction, a white van makes a right turn from the opposite side and pulls into the ego lane, merging ahead and determining the pace. In the oncoming lane, another van nears the crosswalk at low speed and proceeds straight past the intersection, remaining clear of the ego path. On the right side street, a small white van waits at the stop line to enter the main road. Overhead traffic signals and roadside railings frame the scene.", "hazard_reasoning": "There is a white van making a right hand turn at an intersection in front of the ego-car, and pulling into the ego lane ahead of the ego-car. This merging maneuver may bring the van directly into your lane, so you should be aware and ready to adjust your speed."}
{"id": "train_04010", "split": "train", "clip_key": "titan_clip_678_000234_movie", "source": {"subset": "titan", "scenario": "clip_678", "frame": "000234"}, "frames": ["titan_clip_678_000234_movie_t-3.jpg", "titan_clip_678_000234_movie_t-2.jpg", "titan_clip_678_000234_movie_t-1.jpg", "titan_clip_678_000234_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cyclist", "environment_perception": "An urban two-way street with one lane per direction and no physical median runs between mid-rise buildings; the pavement is dry and smooth and traffic is moderate. A silver wagon directly ahead in the ego lane continues through the crosswalk area at a steady pace, setting the speed for the ego vehicle. Farther ahead in the same lane, a small dark van proceeds in the flow. Several cars travel in the oncoming lanes to the right of the center line, passing without encroaching. A cyclist wearing a red T-shirt and carrying a bag rides along the left side of the road away from the ego car, remaining near the curb. An overhead traffic signal controls the intersection ahead.", "hazard_reasoning": "A cyclist wearing a red t-shirt and carrying a bag, is cycling on the left side of the road, away from the ego car. The cyclist may change position or slow unexpectedly, requiring the driver to manoeuvre carefully around them to avoid a collision."}
{"id": "train_04011", "split": "train", "clip_key": "2020-0226-140503_072837_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "072837"}, "frames": ["2020-0226-140503_072837_movie_t-3.jpg", "2020-0226-140503_072837_movie_t-2.jpg", "2020-0226-140503_072837_movie_t-1.jpg", "2020-0226-140503_072837_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way road runs through a corridor of mid-rise buildings, approaching a signalized intersection; the pavement appears damp and traffic is moderate with same-direction cars queued while oncoming vehicles pass through. A black sedan ahead in the ego lane is stopped for the red signal, holding the ego vehicle. To the right, a large flatbed truck in the adjacent lane waits slightly ahead at the stop line, limiting right-side visibility. To the left, a white kei van in the curbside lane is also stopped near the crosswalk alongside the ego car. The traffic light ahead shows red for the ego direction.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of the red traffic light. The driver should stop to prevent a collision with the halted vehicle at the red light."}
{"id": "train_04012", "split": "train", "clip_key": "2020-0213-143552_068345_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "068345"}, "frames": ["2020-0213-143552_068345_movie_t-3.jpg", "2020-0213-143552_068345_movie_t-2.jpg", "2020-0213-143552_068345_movie_t-1.jpg", "2020-0213-143552_068345_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the truck to avoid collision.", "environment_perception": "An urban two-lane roadway with a low hedge median on the right and smooth pavement shows light to moderate flow as the ego car slows. A white semi truck is stopped directly ahead in the ego lane along the right side of the road, blocking the path and holding the ego vehicle. A small flatbed truck ahead to the left proceeds in the adjacent lane, passing the obstruction and occupying the space beside the ego's lane. Near a dealership entrance on the left, another vehicle waits at the side street without entering. No salient signals or posted speeds are visible.", "hazard_reasoning": "There is a white semi truck stopped on the right side of the road, in the ego lane. The stopped truck creates a blind spot ahead, so the driver should stop to maintain a safe following distance and avoid a collision."}
{"id": "train_04013", "split": "train", "clip_key": "titan_clip_826_000438_movie", "source": {"subset": "titan", "scenario": "clip_826", "frame": "000438"}, "frames": ["titan_clip_826_000438_movie_t-3.jpg", "titan_clip_826_000438_movie_t-2.jpg", "titan_clip_826_000438_movie_t-1.jpg", "titan_clip_826_000438_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian waiting to cross", "environment_perception": "A dense urban commercial street appears, with a two-lane two-way road marked by a dashed centerline and no median; the asphalt looks worn, and traffic is moderate but slows near curbside loading and cones. A white box truck ahead in the ego lane progresses slowly along the left side, constraining the ego vehicle's pace. An oncoming green mini truck continues in its right-hand lane past roadside cones as the carriageway narrows. A pedestrian wearing a red shirt and pushing a trolley waits on the left edge of the road to cross close to the ego path. Parked and loading trucks line the left shoulder, and the cones on the right create a minor bottleneck.", "hazard_reasoning": "There is a pedestrian wearing a red shirt and pushing a trolley, waiting on the left side of the road to cross. The pedestrian may step into the roadway unexpectedly while handling the trolley, so the driver should be aware of their intention."}
{"id": "train_04014", "split": "train", "clip_key": "titan_clip_1380_000114_movie", "source": {"subset": "titan", "scenario": "clip_1380", "frame": "000114"}, "frames": ["titan_clip_1380_000114_movie_t-3.jpg", "titan_clip_1380_000114_movie_t-2.jpg", "titan_clip_1380_000114_movie_t-1.jpg", "titan_clip_1380_000114_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking on road", "environment_perception": "An urban commercial street with a narrow undivided roadway shows patched asphalt and a temporary work zone on the left that squeezes the lane; traffic is light. A small white van ahead in the ego lane moves slowly away near the center of the road, effectively setting the pace. A pedestrian in a blue shirt walks along the right edge toward the ego car because there is no sidewalk, staying close to the shopfronts and potentially edging into the lane. Another pedestrian ahead near the centerline also walks toward the camera from the left side of the street, occupying part of the travel lane and narrowing the passage beside the van. Construction cones and barriers line the left shoulder.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking on the right side of the road, toward the ego car, because there is no sidewalk. The pedestrian is on the roadway and may step directly into the vehicle's path, so you should be aware to avoid a collision."}
{"id": "train_04015", "split": "train", "clip_key": "2020-0226-101332_066369_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "066369"}, "frames": ["2020-0226-101332_066369_movie_t-3.jpg", "2020-0226-101332_066369_movie_t-2.jpg", "2020-0226-101332_066369_movie_t-1.jpg", "2020-0226-101332_066369_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes, divided from oncoming lanes by a planted median with a guardrail, has dry smooth pavement and moderate flow as the vehicle approaches a signalized intersection. A white van directly ahead in the center lane proceeds straight toward the junction and sets the pace. Two motorcycles slightly ahead in the left adjacent lane accelerate through the intersection while continuing straight, moving past the ego vehicle. A large truck in the right lane near the crosswalk waits by the curb and occupies that lane. Oncoming traffic moves separately beyond the median.", "hazard_reasoning": "The road is clear with no immediate hazards detected, so the driver can maintain normal speed."}
{"id": "train_04016", "split": "train", "clip_key": "2020-0129-144857_031847_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "031847"}, "frames": ["2020-0129-144857_031847_movie_t-3.jpg", "2020-0129-144857_031847_movie_t-2.jpg", "2020-0129-144857_031847_movie_t-1.jpg", "2020-0129-144857_031847_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs under an elevated structure with two lanes in the ego direction, a right-side barrier beside a separated ramp, smooth dry pavement, and traffic that slows ahead. A black van directly ahead in the ego lane is slowing due to congestion in front, constraining the ego vehicle's pace. Farther ahead, a small white truck and another light van continue slowly in the same lane within the queue. On the left sidewalk, two cyclists ride forward and a pedestrian walks, remaining separated from the roadway. No traffic signals are visible.", "hazard_reasoning": "There is a black van slowing down in the ego lane, because there is traffic congestion, in front of the ego car. Driver should slow down to maintain a safe following distance and avoid collision with the slowing van."}
{"id": "train_04017", "split": "train", "clip_key": "2020-0218-103119_006720_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0218-103119_006720_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0218-103119_006720_movie_t-3_augB1.jpg", "2020-0218-103119_006720_movie_t-2_augB1.jpg", "2020-0218-103119_006720_movie_t-1_augB1.jpg", "2020-0218-103119_006720_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban residential street appears very narrow with one lane each way, no median, and clean pavement; traffic is light. The ego travels in the left lane as a green sedan ahead in the same direction slows and angles toward the center to drive around a parked vehicle in the ego lane, which dictates the ego car's pace. The opposite lane looks clear of oncoming traffic. A white truck is parked tight to the right curb, and bicycles and other parked items line the left side, further narrowing the corridor.", "hazard_reasoning": "There is a green sedan driving around a parked vehicle, in the ego lane. The sedan's maneuver may indicate an unexpected lane change, so the driver should follow the vehicle ahead to maintain a safe distance."}
{"id": "train_04018", "split": "train", "clip_key": "2020-0129-144857_050281_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "050281"}, "frames": ["2020-0129-144857_050281_movie_t-3.jpg", "2020-0129-144857_050281_movie_t-2.jpg", "2020-0129-144857_050281_movie_t-1.jpg", "2020-0129-144857_050281_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of truck changing lanes.", "environment_perception": "An urban arterial with a left-side service lane merges into the main roadway to the right, delineated by flexible bollards and a painted gore; the pavement in the service lane is patched and uneven, and traffic is light. Ahead in the ego lane, a white box truck changes to the right lane, moving steadily into the adjacent through lane. A pedestrian on the left sidewalk walks behind a fence, remaining clear of the roadway. The channelized merge and posts narrow space near the merge point but no other hazards are visible.", "hazard_reasoning": "There is a white truck changing lanes from the ego lane to the right lane. Since it may merge into the ego-vehicle's path, the driver should be aware to maintain safe distance and prevent collision."}
{"id": "train_04019", "split": "train", "clip_key": "titan_clip_361_000108_movie", "source": {"subset": "titan", "scenario": "clip_361", "frame": "000108"}, "frames": ["titan_clip_361_000108_movie_t-3.jpg", "titan_clip_361_000108_movie_t-2.jpg", "titan_clip_361_000108_movie_t-1.jpg", "titan_clip_361_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian walking on roadside", "environment_perception": "The ego-vehicle proceeds slowly along a narrow urban shopping street with a single undivided lane paved with brick and lined by bollards separating it from sidewalks; there are no other vehicles and traffic is light. On the right side ahead, a woman in a black skirt carrying a handbag walks away from the ego vehicle along the curb, remaining on the sidewalk and not entering the lane. Several other pedestrians ahead on both sidewalks walk or pause near shopfronts; a man on the left stands by the bollards near the curb, but none step into the roadway or constrain the vehicle's pace. No signals or speed signs are clearly visible, and the closely spaced bollards and tight corridor define the path.", "hazard_reasoning": "There is a woman wearing a black skirt, carrying a handbag, walking on the right side of the road, away from the ego car. The pedestrian's proximity to the roadway could lead to sudden movements into the lane, so the driver should be aware and prepared to adjust speed or direction."}
{"id": "train_04020", "split": "train", "clip_key": "titan_clip_676_000564_movie", "source": {"subset": "titan", "scenario": "clip_676", "frame": "000564"}, "frames": ["titan_clip_676_000564_movie_t-3.jpg", "titan_clip_676_000564_movie_t-2.jpg", "titan_clip_676_000564_movie_t-1.jpg", "titan_clip_676_000564_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street runs between tall buildings with smooth pavement and light flow, and construction cones narrow the approaches to the upcoming intersection. A large white box truck ahead on the left in the same direction moves slowly along the curb, constraining the ego vehicle's line. A woman walks near the left edge toward the intersection close to the roadway, remaining a potential conflict at the corner. At the intersection, a black truck turns right across the ego vehicle into the side street, briefly blocking the path. An oncoming small truck proceeds through the intersection in the opposing lane, keeping to its side and limiting room to maneuver. A no-entry sign is posted above the far street.", "hazard_reasoning": "There is a black truck turning into the right side of the intersection, in front of the ego car. The driver should slow down to provide safe clearance and avoid a potential collision with the merging truck."}
{"id": "train_04021", "split": "train", "clip_key": "titan_clip_865_000114_movie", "source": {"subset": "titan", "scenario": "clip_865", "frame": "000114"}, "frames": ["titan_clip_865_000114_movie_t-3.jpg", "titan_clip_865_000114_movie_t-2.jpg", "titan_clip_865_000114_movie_t-1.jpg", "titan_clip_865_000114_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian movement", "environment_perception": "An urban neighborhood scene unfolds on a very narrow two-way street without a centerline, bordered by small shops; the pavement is smooth and traffic is light with no moving vehicles nearby. On the left ahead, a pedestrian carrying a bag walks away from the ego car along the curb, close to the travel lane and potentially stepping into it around obstacles. Farther ahead near the middle of the street, another pedestrian proceeds in the same direction along the lane, which could constrain the ego vehicle's pace. The oncoming side remains clear. Parked bicycles and storefront items line the right curb close to the white line, slightly narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian carrying a bag and walking away from the ego car on the left side of the road. The pedestrian could unexpectedly step off the sidewalk into the vehicle's path, so the driver should be cautious of their movement."}
{"id": "train_04022", "split": "train", "clip_key": "2020-0210-101957_082491_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "082491"}, "frames": ["2020-0210-101957_082491_movie_t-3.jpg", "2020-0210-101957_082491_movie_t-2.jpg", "2020-0210-101957_082491_movie_t-1.jpg", "2020-0210-101957_082491_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "On a narrow urban two-way road with red textured pavement and a double yellow centerline, the ego-car follows a right-hand curve; the surface looks good and traffic is light. A white cement mixer truck ahead in the ego lane slows through the bend, limiting the ego vehicle's pace. No other moving vehicles are near, and no oncoming traffic is visible. Convex mirrors and green railings line the left side, with buildings close to the roadway forming a partially blind curve. Several roadside regulatory signs appear at the bend, but no traffic signals are present.", "hazard_reasoning": "There is a white cement mixer slowing in front of the ego-car, in the ego lane, because of pedestrians waiting to cross ahead at the crosswalk. The driver should reduce speed to maintain a safe following distance and allow the pedestrians to cross safely."}
{"id": "train_04023", "split": "train", "clip_key": "2020-0227-153144_016485_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "016485"}, "frames": ["2020-0227-153144_016485_movie_t-3.jpg", "2020-0227-153144_016485_movie_t-2.jpg", "2020-0227-153144_016485_movie_t-1.jpg", "2020-0227-153144_016485_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with three same-direction lanes and a low planted median on the right separating oncoming traffic shows smooth pavement and moderate, steady flow. A black sedan directly ahead changes to the left lane, edging across the lane line and opening space in the ego lane. Farther ahead in the same lane, a dark van continues straight at a steady pace and becomes the primary vehicle setting the ego car's speed. On the left beside the travel lane, a small silver car remains parked in a marked bay, keeping the adjacent curbside margin tight.", "hazard_reasoning": "There is a black sedan in front of the ego car, changing to the left lane. This lane change could cut into the ego-vehicle's path, so the driver should slow down to maintain a safe distance under this situation."}
{"id": "train_04024", "split": "train", "clip_key": "titan_clip_542_000210_movie", "source": {"subset": "titan", "scenario": "clip_542", "frame": "000210"}, "frames": ["titan_clip_542_000210_movie_t-3.jpg", "titan_clip_542_000210_movie_t-2.jpg", "titan_clip_542_000210_movie_t-1.jpg", "titan_clip_542_000210_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "An urban residential two-way street with a single narrow lane and no median runs ahead, the pavement is smooth and traffic is light; a painted 20 on the roadway indicates a 20 speed zone. A three-wheeled delivery scooter travels ahead in the ego lane at low speed, setting the pace. A white van is parked on the left side for unloading, occupying part of the lane and forming a roadside obstruction. A pedestrian walks ahead along the right edge near a small building, close to the carriageway and could step into the lane. No signals are visible, and there is ample on-street railing and fencing on the left.", "hazard_reasoning": "There is a white van parked on the left side of the road because it is being unloaded. The driver should carefully manoeuvre around the van because it may obstruct the lane while unloading."}
{"id": "train_04025", "split": "train", "clip_key": "2020-0131-103016_007906_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "007906"}, "frames": ["2020-0131-103016_007906_movie_t-3.jpg", "2020-0131-103016_007906_movie_t-2.jpg", "2020-0131-103016_007906_movie_t-1.jpg", "2020-0131-103016_007906_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial under elevated expressways carries three same-direction lanes with a concrete barrier on the right and mostly smooth pavement; traffic is moderate and progresses toward a signalized junction. A white motorcycle ahead in the ego lane rolls forward then stops for the red light, becoming the lead vehicle and constraining the ego vehicle's pace. A black sedan slightly ahead to the left continues straight in its lane at a steady speed without encroaching. A silver hatchback near the left curb drifts slowly along the outer lane as the road passes beneath pedestrian footbridges.", "hazard_reasoning": "There is a white motorcycle stopped in the ego lane because of the red traffic lights. The driver should stop to avoid rear-ending the motorcycle and comply with the red signal."}
{"id": "train_04026", "split": "train", "clip_key": "titan_clip_782_000168_movie", "source": {"subset": "titan", "scenario": "clip_782", "frame": "000168"}, "frames": ["titan_clip_782_000168_movie_t-3.jpg", "titan_clip_782_000168_movie_t-2.jpg", "titan_clip_782_000168_movie_t-1.jpg", "titan_clip_782_000168_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A dense urban shopping street with a single narrow one-way lane has no divider and fairly worn but serviceable pavement, and there are no moving vehicles so traffic is light. Sidewalks are busy, with some pedestrians using the roadway. Ahead on the left, a pedestrian with a backpack walks away from the ego vehicle along the edge of the lane because the sidewalk is crowded, and their path could encroach on the ego line. Farther ahead near the center, a small group crosses the lane slowly, limiting approach speed. On the right near storefronts, parked bicycles, a cargo trike, and advertising boards jut into the roadway, narrowing the passage, while a cone on the left marks the curb.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking on the left side of the road, away from the ego car, because the sidewalk is full of people. The pedestrian may unexpectedly step into the lane, requiring careful manoeuvring to avoid a collision."}
{"id": "train_04027", "split": "train", "clip_key": "2020-0218-103119_045185_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "045185"}, "frames": ["2020-0218-103119_045185_movie_t-3.jpg", "2020-0218-103119_045185_movie_t-2.jpg", "2020-0218-103119_045185_movie_t-1.jpg", "2020-0218-103119_045185_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with at least two same-direction lanes runs between mid-rise buildings; double white center lines to the right separate oncoming traffic, the pavement is dry, and flow is light but currently queued at an intersection. A gray box truck is directly ahead in the ego lane, stationary for the traffic signal and holding the ego vehicle. In the adjacent left lane, a white hatchback waits slightly behind and alongside, creeping forward and limiting an easy lane change. Farther ahead in that left lane, a flatbed truck with a yellow-covered load also waits at the line, forming the front of the queue. An overhead signal at the junction shows red.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of a red traffic light. The driver should stop to comply with the red signal and maintain a safe following distance behind the halted vehicle."}
{"id": "train_04028", "split": "train", "clip_key": "2020-0210-155354_017952_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "017952"}, "frames": ["2020-0210-155354_017952_movie_t-3.jpg", "2020-0210-155354_017952_movie_t-2.jpg", "2020-0210-155354_017952_movie_t-1.jpg", "2020-0210-155354_017952_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of motorcycle ahead", "environment_perception": "An urban two-lane two-way street leads to a signalized intersection, with smooth pavement and light traffic as the ego car proceeds in the left lane. A black motorcycle rides ahead in the ego lane and continues straight through the intersection, modestly accelerating and setting the ego vehicle's pace. A scooter approaches in the oncoming lane near the center of the intersection and proceeds past without entering the ego lane. A pedestrian stands on the right corner by the crosswalk, stationary and not stepping into the road. Bicycles are parked along the left sidewalk and buildings closely line both sides, but no obstacles encroach on the carriageway.", "hazard_reasoning": "There is a black motorcycle driving in front of the ego car in the ego lane. The motorcycle may slow unexpectedly, so the driver should stay alert and be prepared to adjust speed to maintain a safe following distance."}
{"id": "train_04029", "split": "train", "clip_key": "titan_clip_159_000366_movie", "source": {"subset": "titan", "scenario": "clip_159", "frame": "000366"}, "frames": ["titan_clip_159_000366_movie_t-3.jpg", "titan_clip_159_000366_movie_t-2.jpg", "titan_clip_159_000366_movie_t-1.jpg", "titan_clip_159_000366_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with no clear lane markings and smooth pavement shows very light motor traffic as pedestrians use the roadway. Ahead in the middle of the road, a woman in a blue T-shirt and jeans walks away from the ego vehicle, occupying the travel path and constraining its pace. Slightly ahead to the left, a backpacked person with a sun umbrella walks along the roadway and could drift into the ego lane. On the right edge near the curb, a man with a backpack walks forward beside shopfronts and remains close to the lane. No vehicles are visible in the same direction or oncoming, and dense storefront signs and poles line both sides, narrowing the corridor.", "hazard_reasoning": "There is a woman wearing a blue T-shirt and jeans and waking in the middle of the road, away from the ego car. The driver should slow down to anticipate her crossing ahead and avoid a collision."}
{"id": "train_04030", "split": "train", "clip_key": "2020-0214-145407_024369_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "024369"}, "frames": ["2020-0214-145407_024369_movie_t-3.jpg", "2020-0214-145407_024369_movie_t-2.jpg", "2020-0214-145407_024369_movie_t-1.jpg", "2020-0214-145407_024369_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road curves gently right, bordered by trees and hedges with smooth, patterned pavement and light traffic flow. A gray truck ahead in the ego lane slows, reportedly for a red traffic light, and it constrains the ego vehicle's pace. A small car farther ahead in the adjacent right lane continues at a steady speed and remains clear of the ego lane. Overhead gantries with direction boards span the roadway as the approach to the intersection nears.", "hazard_reasoning": "There is a gray truck slowing down in the ego lane, because of a red traffic light. The driver should slow down to maintain a safe distance and avoid a potential collision as the truck brakes ahead."}
{"id": "train_04031", "split": "train", "clip_key": "2020-0217-110854_067094_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-110854_067094_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-110854_067094_movie_t-3_augB1.jpg", "2020-0217-110854_067094_movie_t-2_augB1.jpg", "2020-0217-110854_067094_movie_t-1_augB1.jpg", "2020-0217-110854_067094_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "be cautious of truck cutting in ahead", "environment_perception": "An urban two-way boulevard lined with buildings and leafless trees has two same-direction lanes on the left side and oncoming lanes on the right, separated by painted medians; the pavement looks smooth and traffic is moderate. Ahead left, a white mini truck cuts into the ego lane from the left lane, moving inward and reducing the available gap in front of the ego vehicle. Directly ahead, a beige hatchback in the ego lane proceeds straight at a steady pace and becomes the immediate lead vehicle. On the near left, a large tarp-covered truck travels slightly ahead near the curb, partly blocking the left-side view while remaining alongside. Oncoming vehicles move in the far-right lanes without interacting. A broad hatched area marks a separation to the right of the ego lane.", "hazard_reasoning": "There is a white truck cutting in to the ego lane from the left lane. The truck's lane change may force the driver to brake or swerve unexpectedly, so the driver should stay alert to maintain safe following distance under this situation."}
{"id": "train_04032", "split": "train", "clip_key": "2020-0213-143552_045109_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "045109"}, "frames": ["2020-0213-143552_045109_movie_t-3.jpg", "2020-0213-143552_045109_movie_t-2.jpg", "2020-0213-143552_045109_movie_t-1.jpg", "2020-0213-143552_045109_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a raised median and smooth pavement carries moderate two-way traffic, with the ego vehicle traveling in the left-side carriageway while oncoming flow runs to the right of the median. Ahead in the ego lane, a white box truck slows as the traffic signal up the road turns yellow, constraining the ego car's pace approaching the intersection. To the right of the median, an oncoming white van advances toward the camera at a steady speed and remains separated from the ego path by the divider. An overhead gantry and the signalized intersection come into view as vehicles prepare to stop.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of a yellow traffic light ahead. The driver should slow down to maintain a safe following distance and avoid a potential collision as the light changes."}
{"id": "train_04033", "split": "train", "clip_key": "2020-0210-155354_000031_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "000031"}, "frames": ["2020-0210-155354_000031_movie_t-3.jpg", "2020-0210-155354_000031_movie_t-2.jpg", "2020-0210-155354_000031_movie_t-1.jpg", "2020-0210-155354_000031_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban commercial street with a narrow two-way road and smooth pavement approaches a signalized intersection, and traffic is moderate with a short queue forming. A white car directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. Farther ahead near the centerline, a small white van in the same direction slows and waits at the junction. An oncoming black minivan passes to the right in the opposing lane, continuing through. The overhead signal shows red for through traffic while a right-turn arrow is green, and no obstacles or work zones are visible.", "hazard_reasoning": "There is a white Sedan stopped in front of the ego car because of a red traffic light. The ego driver should stop to avoid colliding with the halted vehicle due to the red signal."}
{"id": "train_04034", "split": "train", "clip_key": "2020-0203-114632_088901_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "088901"}, "frames": ["2020-0203-114632_088901_movie_t-3.jpg", "2020-0203-114632_088901_movie_t-2.jpg", "2020-0203-114632_088901_movie_t-1.jpg", "2020-0203-114632_088901_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection beneath an elevated expressway, the pavement smooth and traffic briefly halted. A white hatchback directly ahead in the ego lane remains stopped because the overhead signal for this approach is red, holding the ego vehicle. To the left, a black sedan in the adjacent lane waits slightly ahead in the queue. To the right, a large truck beside the ego vehicle is also stationary at the stop line.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to avoid rear-ending the stopped vehicle at the red traffic light."}
{"id": "train_04035", "split": "train", "clip_key": "2020-0203-154554_039823_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "039823"}, "frames": ["2020-0203-154554_039823_movie_t-3.jpg", "2020-0203-154554_039823_movie_t-2.jpg", "2020-0203-154554_039823_movie_t-1.jpg", "2020-0203-154554_039823_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane road beneath an elevated expressway has a right-side barrier and smooth pavement, and traffic is moderate with steady flow. A white box truck ahead in the ego lane drives away at a steady speed, setting the ego vehicle's pace. A small flatbed truck in the lane to the right runs slightly ahead and keeps parallel, close to the lane line. Several cars travel ahead in the left lane and continue straight. A cyclist moves slowly along the left curb near a stopped van but stays outside the travel lanes. Guardrails on the right and parked vehicles on the left narrow the margins, and no salient signals are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04036", "split": "train", "clip_key": "2020-0210-155354_026557_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "026557"}, "frames": ["2020-0210-155354_026557_movie_t-3.jpg", "2020-0210-155354_026557_movie_t-2.jpg", "2020-0210-155354_026557_movie_t-1.jpg", "2020-0210-155354_026557_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided road with two lanes in the ego direction runs past mid-rise buildings; the pavement is dry and smooth, and traffic is moderate and slow. To the right, a silver van is changing left from the right lane into the ego lane directly ahead, merging into the gap. Ahead in the ego lane, a black microvan rolls slowly and sets the pace. Farther ahead in the adjacent right lane, a large dump truck proceeds sluggishly, contributing to the slow flow.", "hazard_reasoning": "There is a silver van lane changing in front of the ego car, from the right lane to the ego lane. This maneuver reduces the buffer space and increases collision risk, so the driver should slow down to maintain a safe distance."}
{"id": "train_04037", "split": "train", "clip_key": "titan_clip_1226_000594_movie", "source": {"subset": "titan", "scenario": "clip_1226", "frame": "000594"}, "frames": ["titan_clip_1226_000594_movie_t-3.jpg", "titan_clip_1226_000594_movie_t-2.jpg", "titan_clip_1226_000594_movie_t-1.jpg", "titan_clip_1226_000594_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban shopping street with brick paving forms a single narrow lane bounded by metal railings, and the ego-vehicle proceeds straight with light traffic and a smooth surface; no vehicles are immediately ahead. Two pedestrians on the right walk away from the camera along the sidewalk behind the railing, moving parallel to the ego path and not entering the lane. A scooter is parked on the left behind the railing near a storefront, remaining outside the roadway. The block ends at a small intersection ahead with no salient signals visible.", "hazard_reasoning": "As there are no road users or obstacles ahead and traffic controls are operating normally, no immediate hazards are present."}
{"id": "train_04038", "split": "train", "clip_key": "titan_clip_1260_000570_movie", "source": {"subset": "titan", "scenario": "clip_1260", "frame": "000570"}, "frames": ["titan_clip_1260_000570_movie_t-3.jpg", "titan_clip_1260_000570_movie_t-2.jpg", "titan_clip_1260_000570_movie_t-1.jpg", "titan_clip_1260_000570_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van in your lane", "environment_perception": "A narrow urban two-way street with no marked centerline runs between mid-rise buildings; the ego vehicle travels on the left, the pavement looks smooth and dry, and traffic is light. Ahead near the camera, a pedestrian holding a white umbrella steps from the right sidewalk and crosses left across the ego lane, occupying the vehicle's path. At the left foreground, a white van is stopped at a parking entrance with its nose protruding toward the roadway, close to the ego lane. Slightly behind the first pedestrian, another person with an umbrella waits at the right curb without entering the road.", "hazard_reasoning": "There is a gray van parked in the ego lane, on the right side of the road. The parked van blocks the driving lane and could force an unexpected steering maneuver, so the driver should be aware of it and adjust in advance."}
{"id": "train_04039", "split": "train", "clip_key": "2020-0131-135401_090427_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "090427"}, "frames": ["2020-0131-135401_090427_movie_t-3.jpg", "2020-0131-135401_090427_movie_t-2.jpg", "2020-0131-135401_090427_movie_t-1.jpg", "2020-0131-135401_090427_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three lanes in the same direction runs between mid-rise buildings, with smooth asphalt, curbs and guardrails; traffic is heavy and compresses to a stop near an intersection ahead. Directly ahead in the ego lane, a white van is stopped because of traffic congestion ahead, blocking the ego vehicle's path. Farther ahead in the same lane, a large bus queues near the front of the jam and keeps the line stationary. In the adjacent right lane, a small white car slightly ahead rolls slowly near a painted gore and stays in its lane without merging.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary vehicle ahead and maintain a safe following distance."}
{"id": "train_04040", "split": "train", "clip_key": "2020-0217-144444_011917_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "011917"}, "frames": ["2020-0217-144444_011917_movie_t-3.jpg", "2020-0217-144444_011917_movie_t-2.jpg", "2020-0217-144444_011917_movie_t-1.jpg", "2020-0217-144444_011917_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane per direction curves gently right between trees and high-rises; the pavement is smooth and traffic is very light with no vehicles ahead or oncoming. A zebra crossing spans the road just ahead. On the right sidewalk, several pedestrians walk beside the railing near the upcoming crosswalk, moving in the same direction as the ego vehicle and close to where the crossing meets the lane. On the left, two pedestrians stand by the grassy park area behind a curb and fence, away from the roadway. Farther ahead on the right, another pedestrian walks steadily along the sidewalk toward the crossing area. A round 30 sign posts a 30 speed limit, and a pedestrian crossing sign precedes the crosswalk.", "hazard_reasoning": "There are no moving vehicles, cyclists, or obstacles affecting the travel lane, and all pedestrians remain off the roadway, so no immediate warning or evasive action is required."}
{"id": "train_04041", "split": "train", "clip_key": "2020-0227-104226_077561_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "077561"}, "frames": ["2020-0227-104226_077561_movie_t-3.jpg", "2020-0227-104226_077561_movie_t-2.jpg", "2020-0227-104226_077561_movie_t-1.jpg", "2020-0227-104226_077561_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential scene shows a narrow undivided two-way road with smooth pavement and light traffic as the ego car proceeds on the left side. A black van ahead in the ego lane drives straight away from the ego vehicle, gradually increasing the gap and guiding the immediate flow. A silver car is parked along the left curb near a house entrance, stationary and slightly narrowing the lane edge. A convex roadside mirror on a pole to the right is visible.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. Maintain safe following distance and stay alert as it may brake or slow unexpectedly."}
{"id": "train_04042", "split": "train", "clip_key": "2020-0220-102630_029758_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "029758"}, "frames": ["2020-0220-102630_029758_movie_t-3.jpg", "2020-0220-102630_029758_movie_t-2.jpg", "2020-0220-102630_029758_movie_t-1.jpg", "2020-0220-102630_029758_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to stopped van ahead", "environment_perception": "An urban street with two lanes in the ego vehicle's direction has dry pavement and no median, and traffic is heavy and slow. Ahead in the ego lane, a large white box truck is stopped or crawling, constraining the pace and blocking the view forward. Between lanes just ahead, two motor scooters filter through the queue as they accelerate past the truck and could reenter the ego lane. To the right of the ego vehicle, a black van is stopped in the lane that would be the destination for a rightward lane change because of congestion ahead, obstructing that option. Orange cones and a small cart narrow the roadway near the truck, adding to the bottleneck.", "hazard_reasoning": "There is a black van stopped in the destination lane of the ego car changing lanes to the right, because of traffic congestion ahead. The driver should yield because the stopped van in the intended lane poses a collision risk if the lane change continues without slowing down."}
{"id": "train_04043", "split": "train", "clip_key": "2020-0227-153144_024283_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "024283"}, "frames": ["2020-0227-153144_024283_movie_t-3.jpg", "2020-0227-153144_024283_movie_t-2.jpg", "2020-0227-153144_024283_movie_t-1.jpg", "2020-0227-153144_024283_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban divided arterial with two same-direction lanes and a planted median stretches ahead on dry, slightly cracked pavement, and traffic is light. A cyclist wearing a helmet emerges from the right side street and rides across the front of the ego vehicle along the crosswalk, potentially entering the ego lane. An oncoming white car proceeds straight through the intersection on the far side of the median without affecting the ego path. A pedestrian stands on the left sidewalk near the corner by a construction fence, waiting at the side street.", "hazard_reasoning": "There is a cyclist wearing a helmet and cycling in front of the ego car, from the right side of the road. The cyclist is crossing into the ego vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_04044", "split": "train", "clip_key": "2020-0129-144857_009484_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "009484"}, "frames": ["2020-0129-144857_009484_movie_t-3.jpg", "2020-0129-144857_009484_movie_t-2.jpg", "2020-0129-144857_009484_movie_t-1.jpg", "2020-0129-144857_009484_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road without a median approaches a signalized intersection; the pavement is smooth and dry, and traffic is moderate with a short queue. A silver hatchback directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. To the right, a large box truck in the adjacent lane stands slightly ahead at the line, restricting right-side visibility while staying in its lane. Perpendicular cross-traffic of several cars moves through the intersection from right to left under their green, occupying the crossing. Overhead signals for the ego approach show red.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to avoid a rear-end collision with the halted hatchback at the red light."}
{"id": "train_04045", "split": "train", "clip_key": "titan_clip_443_000498_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_443_000498_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_443_000498_movie_t-3_augB1.jpg", "titan_clip_443_000498_movie_t-2_augB1.jpg", "titan_clip_443_000498_movie_t-1_augB1.jpg", "titan_clip_443_000498_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the umbrella-carrying pedestrian ahead", "environment_perception": "An urban commercial street with a narrow shared roadway paved in bricks has no divider or lane markings, and traffic is limited to light pedestrian movement. Ahead in the middle of the road, a pedestrian carrying an umbrella walks away from the ego vehicle along its path, likely setting the pace. On the right foreground, another pedestrian moves toward the camera along the curb and briefly edges into the roadway before passing by. Along the left edge, a pedestrian walks away near storefronts and stays close to the side, presenting little interference. No traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian carrying an umbrella, walking away from the ego car, in the middle of the road. The driver should be aware of the umbrella-carrying pedestrian ahead to avoid sudden braking or collision."}
{"id": "train_04046", "split": "train", "clip_key": "titan_clip_991_000522_movie", "source": {"subset": "titan", "scenario": "clip_991", "frame": "000522"}, "frames": ["titan_clip_991_000522_movie_t-3.jpg", "titan_clip_991_000522_movie_t-2.jpg", "titan_clip_991_000522_movie_t-1.jpg", "titan_clip_991_000522_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision with pedestrian.", "environment_perception": "An urban two-way street with shops lines a narrow single-lane-each-direction roadway without a median; the pavement is worn with patches and traffic is light at low speed. A small white van ahead in the same direction travels slowly near the center, setting the pace. Ahead on the right, a pedestrian wearing a white shirt and black pants stands in the ego lane on the right side of the road, directly in the vehicle's path. At the near right edge, another pedestrian walks toward the camera while edging into the lane. Parked scooters and bicycles along both curbs further narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, standing in the ego lane on the right side of the road. You should slow down because the pedestrian is in your travel lane and may move unpredictably into your path."}
{"id": "train_04047", "split": "train", "clip_key": "titan_clip_77_000330_movie", "source": {"subset": "titan", "scenario": "clip_77", "frame": "000330"}, "frames": ["titan_clip_77_000330_movie_t-3.jpg", "titan_clip_77_000330_movie_t-2.jpg", "titan_clip_77_000330_movie_t-1.jpg", "titan_clip_77_000330_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the stopped vehicle.", "environment_perception": "A narrow urban two-way residential street with no centerline and smooth pavement extends straight between closely spaced buildings, and traffic is light with no oncoming vehicles. Far ahead in the same direction, a small three-wheeled delivery scooter moves slowly along the center and continues straight, modestly setting the pace. On the right curb, stacked household appliances and parked bicycles encroach on the edge of the lane, forming a mild roadside obstacle.", "hazard_reasoning": "There is a white SUV stopped on the right side of the road, because it is being unloaded. The stopped SUV reduces the available road space and may force the vehicle to shift lanes, so the driver should carefully manoeuvre around the obstruction."}
{"id": "train_04048", "split": "train", "clip_key": "2020-0127-132751_089681_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "089681"}, "frames": ["2020-0127-132751_089681_movie_t-3.jpg", "2020-0127-132751_089681_movie_t-2.jpg", "2020-0127-132751_089681_movie_t-1.jpg", "2020-0127-132751_089681_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with left-side driving has one lane each way, divided by a narrow raised yellow centerline; the pavement is dry and smooth and overall traffic is light. A blue flatbed truck directly ahead in the ego lane slows and creeps forward because of traffic congestion ahead, constraining the ego car's pace. On the right sidewalk ahead, a pedestrian walks along the fence in the same direction and stays clear of the roadway. No oncoming vehicles or traffic signals are prominent.", "hazard_reasoning": "There is a blue truck slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe distance and adjust to reduced speeds caused by congestion."}
{"id": "train_04049", "split": "train", "clip_key": "2020-0210-101957_032639_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "032639"}, "frames": ["2020-0210-101957_032639_movie_t-3.jpg", "2020-0210-101957_032639_movie_t-2.jpg", "2020-0210-101957_032639_movie_t-1.jpg", "2020-0210-101957_032639_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multi-lane two-way road runs between mid-rise buildings, divided by double white lines on smooth pavement, with moderate traffic that bunches up ahead. A white truck directly ahead in the ego lane slows as traffic compresses, constraining our pace. A black SUV to the right moves slightly ahead in the adjacent same-direction lane, occupying the space beside us and limiting immediate overtaking room. Oncoming cars in the opposite lanes travel steadily beyond the median lines and stay separated from our path. A no-parking sign is posted on the left sidewalk.", "hazard_reasoning": "There is a white truck slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead on the road. The driver should slow down because the truck's reduced speed due to congestion can increase the risk of rear-end collisions and requires maintaining a safe following distance."}
{"id": "train_04050", "split": "train", "clip_key": "titan_clip_54_000354_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_54_000354_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_54_000354_movie_t-3_augB1.jpg", "titan_clip_54_000354_movie_t-2_augB1.jpg", "titan_clip_54_000354_movie_t-1_augB1.jpg", "titan_clip_54_000354_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with no centerline runs between buildings; pavement is smooth and traffic is light but slowed by a roadside work zone. The ego vehicle proceeds along the left side while cones and pipes intrude from the left, narrowing the lane. A small gray van ahead in the ego path approaches a zebra crossing and slows, constrained by the narrowed roadway. A pedestrian wearing a cap and a reflective jacket stands on the right edge of the road, partly in the ego lane because of construction on the left, reducing the available width. Additional pedestrians remain on the left sidewalk beside the barriers near the work area and appear stationary. An orange roadwork warning sign is posted on the right facade, and no oncoming traffic or median is visible.", "hazard_reasoning": "There's a pedestrian, wearing a cap and a reflective jacket, standing on the right side of the road, in the ego lane, because of construction work on the left. The driver should slow down because the pedestrian is occupying the driving lane and may step into the path unexpectedly."}
{"id": "train_04051", "split": "train", "clip_key": "2020-0206-142535_028685_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "028685"}, "frames": ["2020-0206-142535_028685_movie_t-3.jpg", "2020-0206-142535_028685_movie_t-2.jpg", "2020-0206-142535_028685_movie_t-1.jpg", "2020-0206-142535_028685_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial has a fenced concrete median and smooth dry pavement, with moderate same-direction flow while oncoming traffic moves steadily on the far side of the divider. A white van ahead in the center lane continues straight at a similar speed to the ego vehicle and sets the pace. A silver mini MPV slightly ahead in the left lane proceeds straight and gradually pulls away, remaining outside the ego path. Farther ahead near the left curb, a blue tanker truck moves slowly, prompting left-lane vehicles to pass and leaving the center lane carrying most of the flow. The rightmost lane beside the median appears clear with no immediate obstacles.", "hazard_reasoning": "No hazards are present so the driver can maintain normal speed."}
{"id": "train_04052", "split": "train", "clip_key": "2020-0207-151349_077524_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "077524"}, "frames": ["2020-0207-151349_077524_movie_t-3.jpg", "2020-0207-151349_077524_movie_t-2.jpg", "2020-0207-151349_077524_movie_t-1.jpg", "2020-0207-151349_077524_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs under an elevated expressway with a guardrail on the right; the pavement is dry and traffic is slow and congested. A brown truck directly ahead in the ego lane slows because of the heavy queue ahead and sets the ego vehicle's pace. To the left, a dark sedan in the adjacent lane creeps forward and gradually edges past while staying close alongside the ego lane. Farther ahead in that left lane, a white van proceeds slowly behind other vehicles, contributing to the jam. Pedestrians line the left sidewalk but remain behind the railings and do not enter the roadway.", "hazard_reasoning": "There is a brown truck slowing down in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to adapt to the reduced speed and maintain a safe following distance under these conditions."}
{"id": "train_04053", "split": "train", "clip_key": "2020-0226-101332_042537_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "042537"}, "frames": ["2020-0226-101332_042537_movie_t-3.jpg", "2020-0226-101332_042537_movie_t-2.jpg", "2020-0226-101332_042537_movie_t-1.jpg", "2020-0226-101332_042537_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "A dense urban arterial with smooth pavement has three same-direction lanes and a guardrailed median separating oncoming traffic to the right; vehicles queue under an elevated roadway and traffic is moderate and paused at a junction. A white van directly ahead in the ego lane is stopped for the red traffic light, holding the ego vehicle. In the left lane a red-and-white car just ahead slows in the same queue without merging. In the right lane a taxi farther ahead also waits, aligned with a right-turn-only lane. Overhead signals show red, and green directional signboards hang from the overpass.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of a red traffic light. Stop immediately to avoid a rear-end collision with the stationary vehicle at the red light."}
{"id": "train_04054", "split": "train", "clip_key": "2020-0213-143552_065174_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "065174"}, "frames": ["2020-0213-143552_065174_movie_t-3.jpg", "2020-0213-143552_065174_movie_t-2.jpg", "2020-0213-143552_065174_movie_t-1.jpg", "2020-0213-143552_065174_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes runs between mid-rise buildings, divided from oncoming lanes by a hedge median; the pavement is smooth and traffic moves at a moderate, steady pace. A white box truck ahead in the ego lane accelerates and drives away through a green light, continuing straight and loosely setting the pace. A black hatchback slightly ahead to the left cruises in the curbside lane at a similar speed without merging toward the ego. A light-colored car farther ahead in the left lane also proceeds straight, maintaining its gap. The signal ahead shows green, and the opposite carriageway beyond the median carries unobstructive oncoming flow.", "hazard_reasoning": "There's a white truck, driving away from the ego car, in the ego lane, because of green traffic lights. The green signal means the truck will continue moving, so the driver should follow to maintain a safe distance."}
{"id": "train_04055", "split": "train", "clip_key": "2020-0207-151349_019211_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "019211"}, "frames": ["2020-0207-151349_019211_movie_t-3.jpg", "2020-0207-151349_019211_movie_t-2.jpg", "2020-0207-151349_019211_movie_t-1.jpg", "2020-0207-151349_019211_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between large buildings, separated from a pedestrian sidewalk by guardrails; pavement looks smooth and traffic is moderate and slow. A white box truck directly ahead in the ego lane slows and constrains the ego vehicle's pace. In the lane to the left, a white van slightly ahead moves at a similar slow speed beside the truck, limiting a left-side pass. To the right, a coach bus and several cars, including a black SUV just ahead, proceed slowly in their lane, keeping gaps tight and limiting rightward merging options.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The slowing truck may cause the ego vehicle to brake suddenly, increasing collision risk, so the driver should slow down."}
{"id": "train_04056", "split": "train", "clip_key": "titan_clip_34_000222_movie", "source": {"subset": "titan", "scenario": "clip_34", "frame": "000222"}, "frames": ["titan_clip_34_000222_movie_t-3.jpg", "titan_clip_34_000222_movie_t-2.jpg", "titan_clip_34_000222_movie_t-1.jpg", "titan_clip_34_000222_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow unmarked single lane on stone pavement has no divider and light, slow-moving traffic. A silver hatchback directly ahead in the ego lane slows, constraining the ego car's pace. Farther ahead, a black kei van in the same direction rolls away at low speed, keeping the flow sluggish. On the right edge, a man walks along the curb toward the camera, close to the lane and potentially entering the ego path. Curbside signboards and shop displays encroach on the roadway and reduce clearance.", "hazard_reasoning": "There is a silver hatchback slowing in front of the ego car, in the ego lane. The slowing vehicle ahead reduces following distance and increases collision risk, so the driver should slow down to maintain a safe distance."}
{"id": "train_04057", "split": "train", "clip_key": "2020-0127-132751_104433_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0127-132751_104433_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0127-132751_104433_movie_t-3_augB1.jpg", "2020-0127-132751_104433_movie_t-2_augB1.jpg", "2020-0127-132751_104433_movie_t-1_augB1.jpg", "2020-0127-132751_104433_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of crossing pedestrian ahead", "environment_perception": "An urban two-lane road with no median and narrow shoulders runs past shops; the pavement is dry and slightly worn, and traffic is light but momentarily slow. A silver microvan directly ahead in the ego lane stops with brake lights on, constraining the ego vehicle. A pedestrian in a brown coat carrying a handbag crosses from the right curb to the left directly in front of the ego car, prompting the stop. A dark car moves in the opposite lane on the right, continuing past without conflict.", "hazard_reasoning": "There is a female pedestrian, wearing a brown coat and carrying a handbag, crossing the road from the right side, to the left side, in front of the ego-car. The pedestrian's movement in front of the vehicle poses a potential collision risk, so the driver should be aware and prepare to adjust speed and avoid impact."}
{"id": "train_04058", "split": "train", "clip_key": "titan_clip_65_000030_movie", "source": {"subset": "titan", "scenario": "clip_65", "frame": "000030"}, "frames": ["titan_clip_65_000030_movie_t-3.jpg", "titan_clip_65_000030_movie_t-2.jpg", "titan_clip_65_000030_movie_t-1.jpg", "titan_clip_65_000030_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "A narrow urban two-way street without a median runs between close buildings, the pavement is smooth and traffic is light. A pedestrian in a white shirt and white pants walks away from the ego vehicle in the middle of the roadway ahead because there is no sidewalk, occupying the ego path and controlling the pace. Farther ahead, a small white truck is visible near the end of the block. A white car is parked along the right edge, narrowing the available lane beside the ego path. Potted plants and storefront items line the right curb, further reducing usable width.", "hazard_reasoning": "There is a pedestrian wearing white pants and a white shirt, and walking away from the ego car, in the middle of the road, because there is no sidewalk. The pedestrian may continue walking into the lane, so the driver should yield to avoid a collision."}
{"id": "train_04059", "split": "train", "clip_key": "2020-0206-142535_044771_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "044771"}, "frames": ["2020-0206-142535_044771_movie_t-3.jpg", "2020-0206-142535_044771_movie_t-2.jpg", "2020-0206-142535_044771_movie_t-1.jpg", "2020-0206-142535_044771_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with the stopped hatchback", "environment_perception": "A busy urban arterial with multiple same-direction lanes and no visible median runs between mid-rise buildings; the asphalt is dry and smooth, and traffic quickly compresses into a queue ahead. Directly ahead in the leftmost ego lane, a gray hatchback is stopped because of congestion and holds the ego car. In the adjacent right lane, a white van queues at low speed alongside, limiting room to merge. Farther ahead, several cars in all lanes remain stationary in the same backup. Pedestrians stand along the left sidewalk near shops without moving toward the road. An overhead blue sign displays a time restriction of 8-20.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car in the ego lane because of traffic congestion. Stop to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_04060", "split": "train", "clip_key": "2020-0206-101736_001597_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "001597"}, "frames": ["2020-0206-101736_001597_movie_t-3.jpg", "2020-0206-101736_001597_movie_t-2.jpg", "2020-0206-101736_001597_movie_t-1.jpg", "2020-0206-101736_001597_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-lane two-way street approaches a rail overpass, the pavement dry and slightly worn, with no median. Traffic is light as the ego vehicle proceeds in the left lane while parked vehicles line both curbs. Ahead near the overpass, a pedestrian in a black coat wearing a white mask crosses from left to right in front of the ego car, prompting the ego to slow. A white box truck ahead in the same lane moves slowly under the bridge and limits the pace. Oncoming vehicles travel in the right lane beyond the center line and pass steadily with clear separation. Cones and a scooter stopped at the left curb further narrow the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a black coat and a white mask, crossing the street in front of the ego-car, from the left side to the right side. The driver should carefully manoeuvre around the pedestrian to prevent an accident."}
{"id": "train_04061", "split": "train", "clip_key": "2020-0214-102601_074731_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "074731"}, "frames": ["2020-0214-102601_074731_movie_t-3.jpg", "2020-0214-102601_074731_movie_t-2.jpg", "2020-0214-102601_074731_movie_t-1.jpg", "2020-0214-102601_074731_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A suburban two-way residential street with one narrow lane per direction and no median stretches ahead; the pavement looks fair and overall flow is light to moderate but slows near a downstream bottleneck. A black car directly ahead in the ego lane slows and edges forward because a short queue forms farther up, constraining the ego vehicle's pace. Two more same-direction cars are visible ahead in the queue, moving slowly within the ego path. An oncoming car approaches in the opposite lane at low speed and passes without conflict. Fences and hedges line the road, and there are no salient signals or signs.", "hazard_reasoning": "There is a black sedan slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and accommodate the reduced speed of traffic."}
{"id": "train_04062", "split": "train", "clip_key": "titan_clip_356_000018_movie", "source": {"subset": "titan", "scenario": "clip_356", "frame": "000018"}, "frames": ["titan_clip_356_000018_movie_t-3.jpg", "titan_clip_356_000018_movie_t-2.jpg", "titan_clip_356_000018_movie_t-1.jpg", "titan_clip_356_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian.", "environment_perception": "An urban commercial street with a single narrow lane and curbside bollards unfolds ahead; the asphalt looks slightly worn and traffic is light with no oncoming vehicles visible. A small white car remains ahead in the ego lane, moving away at low speed and setting the pace. On the right edge of the roadway there is a pedestrian carrying a backpack and walking away from the ego car along the curb, close to the lane but continuing straight. Additional pedestrians on both sidewalks walk parallel to traffic and keep to the walkways. No salient signals or signs appear in view.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking on the right side of the road, away from the ego car. The pedestrian could unexpectedly step into the travel lane, so the driver should stay alert and be prepared to slow down."}
{"id": "train_04063", "split": "train", "clip_key": "2020-0203-154554_027247_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_027247_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_027247_movie_t-3_augB1.jpg", "2020-0203-154554_027247_movie_t-2_augB1.jpg", "2020-0203-154554_027247_movie_t-1_augB1.jpg", "2020-0203-154554_027247_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement and no median carries heavy, slow traffic toward a junction beneath an elevated roadway. A white semi-truck with a flatbed trailer is directly ahead in the ego lane and slows because of congestion ahead, constraining the ego car's pace. To the left, a black minivan alongside in the adjacent lane creeps forward in parallel, limiting space for a lane change. Ahead to the right, a small white van in the rightmost lane inches forward and could turn at the junction, keeping close to the ego lane. The rightmost lane shows right-turn-only markings that explain the queuing on that side.", "hazard_reasoning": "There is a white semi-truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid potential collisions in congested traffic."}
{"id": "train_04064", "split": "train", "clip_key": "2020-0210-155354_047052_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "047052"}, "frames": ["2020-0210-155354_047052_movie_t-3.jpg", "2020-0210-155354_047052_movie_t-2.jpg", "2020-0210-155354_047052_movie_t-1.jpg", "2020-0210-155354_047052_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road carries heavy, slow traffic on dry pavement, with a sidewalk and guardrail on the left and overhead direction signs; vehicles queue near an intersection. A gray van directly ahead in the ego lane is stopped at the signal, holding the ego vehicle. To the right, a black sedan in the adjacent lane eases forward past the ego car and continues straight with the queue, not merging. Farther ahead in the right lane, a white van also creeps forward in line. An overhead traffic signal is visible above the roadway as the lineup waits.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, because of a red traffic light. The van ahead is halted at a red light, so the driver must stop to avoid a rear-end collision."}
{"id": "train_04065", "split": "train", "clip_key": "2020-0227-153144_008533_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "008533"}, "frames": ["2020-0227-153144_008533_movie_t-3.jpg", "2020-0227-153144_008533_movie_t-2.jpg", "2020-0227-153144_008533_movie_t-1.jpg", "2020-0227-153144_008533_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with a raised median and smooth pavement is seen at a signalized crosswalk; traffic is light and the overhead signal for the ego direction shows red, so the car is stopped. Ahead at the crosswalk, a cyclist wearing a backpack and face mask rides from the left curb across to the right side of the road, passing in front of the ego lane and holding the car. Another cyclist waits at the left corner beside the crosswalk, close to the ego path. On the opposite side of the median to the right, oncoming cars move through the intersection, remaining separated from the ego lane.", "hazard_reasoning": "A cyclist wearing a backpack and face mask is crossing to the right side of the road via the crosswalk. You should stop to yield to the cyclist and avoid a collision in the crosswalk."}
{"id": "train_04066", "split": "train", "clip_key": "2020-0217-110854_023929_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "023929"}, "frames": ["2020-0217-110854_023929_movie_t-3.jpg", "2020-0217-110854_023929_movie_t-2.jpg", "2020-0217-110854_023929_movie_t-1.jpg", "2020-0217-110854_023929_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop before the bus.", "environment_perception": "An urban multi-lane road among mid-rise buildings has smooth pavement and painted dividers, and traffic is queued at an intersection. An orange Airport Limousine bus is directly ahead in the ego lane and remains stopped at a red light, holding the ego vehicle. A silver van in the adjacent lane to the left is also stopped alongside in the same direction. On the far right, a pedestrian stands near the crosswalk at the curb without entering the roadway. Overhead traffic signals facing the ego direction display red.", "hazard_reasoning": "There is an orange bus stopped in front of the ego car, in the ego lane, because of a red traffic light. Because the bus is stopped at the red signal, the driver must stop to prevent a collision."}
{"id": "train_04067", "split": "train", "clip_key": "2020-0228-150133_011570_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-150133_011570_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-150133_011570_movie_t-3_augB1.jpg", "2020-0228-150133_011570_movie_t-2_augB1.jpg", "2020-0228-150133_011570_movie_t-1_augB1.jpg", "2020-0228-150133_011570_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid orange centerline runs between mid-rise buildings; the asphalt is dry and traffic is moderate. A white box truck is directly ahead in the ego lane and slows, constraining the ego car's pace. In the opposing lane to the right, an oncoming taxi passes close by, followed farther ahead by a van and a city bus, all proceeding straight and keeping to their lane. On the left sidewalk, two pedestrians, one pushing a bicycle, move along behind a railing and remain outside the roadway.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. You should slow down to keep a safe distance and prevent a collision when the truck decelerates."}
{"id": "train_04068", "split": "train", "clip_key": "2020-0207-151349_074061_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "074061"}, "frames": ["2020-0207-151349_074061_movie_t-3.jpg", "2020-0207-151349_074061_movie_t-2.jpg", "2020-0207-151349_074061_movie_t-1.jpg", "2020-0207-151349_074061_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated expressway with two same-direction lanes and a right-side guardrail; the pavement is clean and traffic is heavy but beginning to ease into motion. A gray dump truck directly ahead in the ego lane accelerates as the queue starts moving, setting the ego car's pace. To the left, a white hatchback draws alongside and edges forward in the adjacent lane, limiting space beside the ego vehicle. Farther ahead in that lane, a silver sedan continues slowly with the flow, keeping parallel traffic dense. Blue direction signs hang ahead and a pillar shows 466. Large columns and the guardrail line the right edge, tightening the corridor.", "hazard_reasoning": "There is a gray truck accelerating in the ego lane, because traffic has started moving forward. The driver should start moving to keep up with traffic and avoid impeding following vehicles."}
{"id": "train_04069", "split": "train", "clip_key": "titan_clip_418_000588_movie", "source": {"subset": "titan", "scenario": "clip_418", "frame": "000588"}, "frames": ["titan_clip_418_000588_movie_t-3.jpg", "titan_clip_418_000588_movie_t-2.jpg", "titan_clip_418_000588_movie_t-1.jpg", "titan_clip_418_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban alley-like shared street with brick paving forms a single narrow lane without a centerline or median between buildings; the surface looks even and there is no other vehicular traffic, so flow is light. On the left side near the storefronts, a man wearing a white shirt and black pants walks toward the ego car, alongside another similarly dressed man, staying close to the edge but near the travel path. Farther ahead near the center of the lane, several pedestrians move away from the camera and slightly rightward, occupying the path and constraining speed. A bicycle is parked along the tree-lined right verge, and no salient signals or posted speeds are visible.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, walking on the left side of the road, towards the ego car. The pedestrian's movement towards the vehicle path requires the driver to manoeuvre around him safely to avoid a collision."}
{"id": "train_04070", "split": "train", "clip_key": "titan_clip_1308_000432_movie", "source": {"subset": "titan", "scenario": "clip_1308", "frame": "000432"}, "frames": ["titan_clip_1308_000432_movie_t-3.jpg", "titan_clip_1308_000432_movie_t-2.jpg", "titan_clip_1308_000432_movie_t-1.jpg", "titan_clip_1308_000432_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on road", "environment_perception": "A narrow urban shopping street with a single shared lane and no divider has smooth pavement and very slow, pedestrian-heavy traffic. Ahead in the lane, two people walk away near the center, so the ego vehicle proceeds cautiously behind them. On the right side of the road, a man wearing a white shirt and gray pants pulls a suitcase and walks away from the ego car along the edge, narrowing the available space. Farther ahead, a white van in the same direction moves slowly near the left curb while another van stands on the right, creating a tight corridor with limited room to pass.", "hazard_reasoning": "There is a man wearing a white shirt and gray pants, pulling a suitcase, and walking on the right side of the road, away from the ego car. This pedestrian may unexpectedly step into the lane, so the driver should remain aware to prevent a collision."}
{"id": "train_04071", "split": "train", "clip_key": "2020-0129-144857_032618_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "032618"}, "frames": ["2020-0129-144857_032618_movie_t-3.jpg", "2020-0129-144857_032618_movie_t-2.jpg", "2020-0129-144857_032618_movie_t-1.jpg", "2020-0129-144857_032618_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban corridor runs under elevated structures with two same-direction lanes and a right-side guardrail; the pavement is dry and in good condition, and traffic is heavy with stop-and-go flow. A black van directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle at a standstill. Farther ahead in the same lane, a large box truck is also stopped, creating a short queue that constrains movement. In the left adjacent lane, a motor scooter ahead and to the left continues riding forward, passing the stationary queue without affecting the ego path.", "hazard_reasoning": "There is a black van stopped in front of the ego car in the ego lane, because of traffic congestion. Because the van is halted directly ahead in the same lane due to congestion, the driver must stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_04072", "split": "train", "clip_key": "titan_clip_243_000102_movie", "source": {"subset": "titan", "scenario": "clip_243", "frame": "000102"}, "frames": ["titan_clip_243_000102_movie_t-3.jpg", "titan_clip_243_000102_movie_t-2.jpg", "titan_clip_243_000102_movie_t-1.jpg", "titan_clip_243_000102_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "An urban two-way street without a marked centerline runs between tall buildings; the dry pavement is in good condition and traffic is light. The ego vehicle proceeds along the left side with no divider. A white van is parked on the left side of the road just ahead at the curb, protruding slightly into the travel path and narrowing the lane. Far ahead an oncoming car continues straight in the opposite direction. A trash bin stands by the right curb mid-block, outside the roadway.", "hazard_reasoning": "There is a white van parked on the left side of the road. The parked van narrows the passage, so the driver should manoeuvre carefully around it to avoid a collision."}
{"id": "train_04073", "split": "train", "clip_key": "titan_clip_585_000456_movie", "source": {"subset": "titan", "scenario": "clip_585", "frame": "000456"}, "frames": ["titan_clip_585_000456_movie_t-3.jpg", "titan_clip_585_000456_movie_t-2.jpg", "titan_clip_585_000456_movie_t-1.jpg", "titan_clip_585_000456_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban neighborhood street carries light two-way traffic on a narrow roadway without a median, with dry, slightly cracked pavement. A blue truck is stopped on the left side of the road next to the ego lane, taking up part of the carriageway and constraining the approach. A bicyclist to the right near the sidewalk at a side-street mouth rolls slowly and may merge ahead into the ego lane. A pedestrian on the near right walks along the curb by the junction entrance, close to but outside the lane. A no-entry sign marks the right-hand side street.", "hazard_reasoning": "There is a blue truck stopped on the left side of the road. It partially blocks the left lane and reduces visibility, so the driver should carefully manoeuvre to safely pass."}
{"id": "train_04074", "split": "train", "clip_key": "titan_clip_647_000342_movie", "source": {"subset": "titan", "scenario": "clip_647", "frame": "000342"}, "frames": ["titan_clip_647_000342_movie_t-3.jpg", "titan_clip_647_000342_movie_t-2.jpg", "titan_clip_647_000342_movie_t-1.jpg", "titan_clip_647_000342_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban neighborhood street appears narrow and two-way with no median, smooth pavement, and light traffic, and the view remains steady. On the left ahead, a pedestrian in a blue shirt walks away along the curb in the same direction, close to the travel lane and relevant as the vehicle approaches. Farther ahead on the left, a small scooter stands at the curb with its rear protruding slightly into the roadway, narrowing the passage. No other moving vehicles or oncoming traffic are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking on the left side of the road, away from the ego car. The pedestrian may enter the roadway unexpectedly, so the driver should manoeuvre carefully around the pedestrian to maintain safe clearance."}
{"id": "train_04075", "split": "train", "clip_key": "titan_clip_168_000594_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_168_000594_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_168_000594_movie_t-3_augB1.jpg", "titan_clip_168_000594_movie_t-2_augB1.jpg", "titan_clip_168_000594_movie_t-1_augB1.jpg", "titan_clip_168_000594_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road in Japan has two same-direction lanes with no median, smooth pavement, and slow, heavy flow among closely spaced vehicles. A group of pedestrians ahead crosses from the left to the right in front of the ego vehicle, including a tall man wearing a blue shirt and gray pants, and they occupy the ego lane. To the right, a silver van in the adjacent lane is stopped or creeping as it yields to the pedestrians, momentarily alongside the crossing. Farther ahead, a red car and a bus in the ego lane move slowly in a queue, constraining the pace. Blue overhead guide signs are visible above the roadway.", "hazard_reasoning": "There is a tall man, wearing a blue shirt and gray pants, crossing the street, from the left side to the right side. You should slow down to yield to the crossing pedestrian and avoid a collision."}
{"id": "train_04076", "split": "train", "clip_key": "2020-0127-132751_102613_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "102613"}, "frames": ["2020-0127-132751_102613_movie_t-3.jpg", "2020-0127-132751_102613_movie_t-2.jpg", "2020-0127-132751_102613_movie_t-1.jpg", "2020-0127-132751_102613_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban two-way road with one lane each direction and a solid yellow centerline shows slightly worn pavement and light traffic as the view approaches a signalized crosswalk. A silver van ahead in the ego lane drives away toward the crosswalk and effectively sets the ego vehicle's pace. An oncoming white car travels straight in the opposite lane beyond the crosswalk without encroaching on the ego path. Several pedestrians on the right sidewalk near the intersection walk and pause by the curb at the zebra crossing, making them relevant because of their proximity to the roadway. Overhead traffic lights span the intersection, and storefronts and curbs line both sides.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04077", "split": "train", "clip_key": "2020-0227-153144_034126_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "034126"}, "frames": ["2020-0227-153144_034126_movie_t-3.jpg", "2020-0227-153144_034126_movie_t-2.jpg", "2020-0227-153144_034126_movie_t-1.jpg", "2020-0227-153144_034126_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with good pavement carries heavy same-direction traffic toward a signalized intersection, where vehicles queue and the flow is stopped. A white minivan directly ahead in the ego lane is stopped for the red signal, constraining the ego vehicle. To the right, a line of dark vans in the adjacent lane waits and occasionally inches forward parallel to the ego. On the left, a white car alongside creeps ahead within its lane close to the ego's front-left, maintaining the queue. The overhead signal ahead shows red.", "hazard_reasoning": "There is a white minivan stopped in the ego lane, because of the red traffic light. Driver must stop to avoid rear-ending the stationary minivan and comply with the red signal."}
{"id": "train_04078", "split": "train", "clip_key": "titan_clip_863_000354_movie", "source": {"subset": "titan", "scenario": "clip_863", "frame": "000354"}, "frames": ["titan_clip_863_000354_movie_t-3.jpg", "titan_clip_863_000354_movie_t-2.jpg", "titan_clip_863_000354_movie_t-1.jpg", "titan_clip_863_000354_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane each way, no median, and smooth asphalt appears, with light traffic as the ego vehicle proceeds in the left lane along a gentle curve. A silver van is stopped ahead along the left curb in the ego lane, partially blocking the path and constraining the approach. On the right by storefronts, a person in a white shirt stands with a bicycle at the curb facing the road rather than riding toward the ego vehicle. Farther ahead, a distant cyclist travels away near the centerline and does not affect the lane. Orange barricades mark a work zone up the road that locally narrows the carriageway.", "hazard_reasoning": "There is a cyclist wearing a white shirt, carrying a child, cycling on the right side of the road, towards the ego car. The cyclist carrying a child may make unpredictable movements near the lane, so the driver should slow down to maintain a safe distance."}
{"id": "train_04079", "split": "train", "clip_key": "2020-0225-102455_012806_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "012806"}, "frames": ["2020-0225-102455_012806_movie_t-3.jpg", "2020-0225-102455_012806_movie_t-2.jpg", "2020-0225-102455_012806_movie_t-1.jpg", "2020-0225-102455_012806_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban road with one through lane in the ego direction plus a red-painted left-turn lane runs beneath a pedestrian overpass; a curb-and-post divider separates oncoming traffic to the right, the pavement is dry, and flow is moderate. A black dump truck directly ahead in the ego lane accelerates away on the green light, effectively setting the ego vehicle's pace as it proceeds straight. To the right, a white van approaches in the opposite-direction lane behind the divider and stays isolated from the ego path. No pedestrians are in the roadway, and roadside railings and parked bicycles line the left.", "hazard_reasoning": "There is a black truck driving in the ego lane, away from the ego car, because of a green traffic light. The truck may slow down if the light turns yellow soon, so following the vehicle ahead helps you anticipate any braking."}
{"id": "train_04080", "split": "train", "clip_key": "titan_clip_381_000216_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_381_000216_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_381_000216_movie_t-3_augB1.jpg", "titan_clip_381_000216_movie_t-2_augB1.jpg", "titan_clip_381_000216_movie_t-1_augB1.jpg", "titan_clip_381_000216_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban commercial street with interlocking brick pavement carries slow mixed traffic in a narrow bidirectional lane without a divider, and the surface appears smooth. On the left at close range, a white van cuts out from the curb into the ego vehicle's lane and moves toward the ego car, squeezing the available space. Farther ahead in the center, a cyclist rides away along the lane at low speed. Near the left curb, several pedestrians mill around a dark van and step into the roadway. Parked vehicles on the left and shopfronts with cones on the right create a tight corridor.", "hazard_reasoning": "There is a white van on the left side of the road, cutting into the ego car lane, moving toward the ego car. Since the white van is encroaching into the ego lane, the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_04081", "split": "train", "clip_key": "2020-0129-105040_046871_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "046871"}, "frames": ["2020-0129-105040_046871_movie_t-3.jpg", "2020-0129-105040_046871_movie_t-2.jpg", "2020-0129-105040_046871_movie_t-1.jpg", "2020-0129-105040_046871_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated roadway, with two lanes in the ego direction, a tree-lined median on the left, smooth pavement, and light traffic. A small white van proceeds ahead slightly left of the ego path, continuing straight and loosely setting the pace. Farther ahead to the right, another white car travels straight beneath the flyover without affecting the ego vehicle. Very close on the left, a white car moves parallel in the adjacent lane, remaining alongside and relevant for lateral clearance. A pedestrian footbridge spans the road ahead and a guardrail borders the right edge.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04082", "split": "train", "clip_key": "2020-0210-101957_019836_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "019836"}, "frames": ["2020-0210-101957_019836_movie_t-3.jpg", "2020-0210-101957_019836_movie_t-2.jpg", "2020-0210-101957_019836_movie_t-1.jpg", "2020-0210-101957_019836_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial carries same-direction traffic on dry pavement with heavy congestion and frequent stops. Vehicles queue tightly and the flow remains largely stalled. Directly ahead in the ego lane, a black motorcycle is stopped because of the jam, holding the ego vehicle at a standstill. Farther ahead in the same lane, a white boxy van waits in the line, determining the motorcycle's stop and constraining the ego car's progress. In the adjacent right lane, a large silver box truck sits slightly ahead, inching with the queue and limiting forward visibility. Overhead blue directional signs in Japanese are visible above the roadway.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop immediately to avoid a collision with the stationary motorcycle ahead in the congested traffic."}
{"id": "train_04083", "split": "train", "clip_key": "2020-0225-102455_005672_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "005672"}, "frames": ["2020-0225-102455_005672_movie_t-3.jpg", "2020-0225-102455_005672_movie_t-2.jpg", "2020-0225-102455_005672_movie_t-1.jpg", "2020-0225-102455_005672_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way road with one lane each direction runs between mid-rise buildings, divided by double solid lines; the pavement looks smooth and traffic is moderate. Ahead in the ego lane, a gray dump truck slows, constraining the vehicle's pace. In the opposite direction to the right, a small car approaches and continues straight past, separated by the median. On the left curb a dark van is parked near the lane and may reenter traffic.", "hazard_reasoning": "There is a gray truck slowing in front of the ego car, in the ego lane. You should follow the vehicle ahead to maintain a safe gap and adapt to its speed changes."}
{"id": "train_04084", "split": "train", "clip_key": "2020-0203-114632_046842_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "046842"}, "frames": ["2020-0203-114632_046842_movie_t-3.jpg", "2020-0203-114632_046842_movie_t-2.jpg", "2020-0203-114632_046842_movie_t-1.jpg", "2020-0203-114632_046842_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs straight toward a signalized intersection; lanes are divided by a chevroned painted buffer, the pavement is dry, and traffic flows at a moderate pace. A silver van ahead in the ego lane proceeds steadily through the junction under a green traffic arrow, effectively setting the ego car's pace. To its right, a white box truck in the adjacent lane continues ahead slightly faster while holding its lane. Farther right, oncoming cars travel in their own lanes beyond the central buffer without interacting with the ego's path. Overhead signals show green arrows permitting through movement, and pedestrians wait on the sidewalks near the corners.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04085", "split": "train", "clip_key": "titan_clip_150_000180_movie", "source": {"subset": "titan", "scenario": "clip_150", "frame": "000180"}, "frames": ["titan_clip_150_000180_movie_t-3.jpg", "titan_clip_150_000180_movie_t-2.jpg", "titan_clip_150_000180_movie_t-1.jpg", "titan_clip_150_000180_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully", "environment_perception": "An urban two-way street with one lane in each direction and no median approaches a signalized intersection on smooth asphalt, and traffic is light. A black van is parked ahead in the ego lane near the intersection, narrowing the approach and partially blocking the path. Several pedestrians on the left enter the crosswalk and move across the ego lane ahead, temporarily occupying the path. A few oncoming cars proceed through the intersection in the opposite lane to the right.", "hazard_reasoning": "There is a black van parked in the ego lane. You need to manoeuvre carefully around it to prevent a collision and maintain safe passage."}
{"id": "train_04086", "split": "train", "clip_key": "2020-0207-101955_081769_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "081769"}, "frames": ["2020-0207-101955_081769_movie_t-3.jpg", "2020-0207-101955_081769_movie_t-2.jpg", "2020-0207-101955_081769_movie_t-1.jpg", "2020-0207-101955_081769_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A suburban divided arterial with two lanes in the ego direction runs alongside a noise barrier on the left and a low rail median on the right; the pavement is smooth and traffic is slow to stopped. Directly ahead in the ego lane, a blue flatbed truck is stopped due to congestion, blocking the path and dictating the ego vehicle's pace. Farther ahead in the same lane, a white box truck also remains stationary, reinforcing the queue. The adjacent right lane shows no nearby vehicles at this moment, while light oncoming traffic moves on the opposite carriageway beyond the median.", "hazard_reasoning": "There is a blue truck stopped in the ego lane, because of traffic congestion. You should stop to maintain a safe distance from the halted truck and avoid a rear-end collision."}
{"id": "train_04087", "split": "train", "clip_key": "2020-0228-150133_023770_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "023770"}, "frames": ["2020-0228-150133_023770_movie_t-3.jpg", "2020-0228-150133_023770_movie_t-2.jpg", "2020-0228-150133_023770_movie_t-1.jpg", "2020-0228-150133_023770_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban intersection on a narrow two-way road with one lane each way has smooth pavement and heavy flow near the junction. Ahead in the ego lane, a black mid-size SUV is stopped on the crosswalk, queuing because of traffic congestion up ahead and holding our position. Oncoming to the right, a blue-and-silver box truck waits near the centerline at the intersection, edging forward and narrowing space. On the cross street ahead, several vehicles, including white vans, move left to right through the junction, keeping the gap closed and contributing to the queue. No other obstacles are visible beyond the tight spacing at the crosswalk.", "hazard_reasoning": "There is a black mid-suv stopped in the ego lane because of traffic congestion up ahead. You should stop to avoid rear-ending the halted vehicle and navigate the congested traffic safely."}
{"id": "train_04088", "split": "train", "clip_key": "titan_clip_1160_000486_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1160_000486_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1160_000486_movie_t-3_augB1.jpg", "titan_clip_1160_000486_movie_t-2_augB1.jpg", "titan_clip_1160_000486_movie_t-1_augB1.jpg", "titan_clip_1160_000486_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban commercial street presents a single usable lane with no median, smooth pavement, and light traffic slowed by curbside loading. On the left, beside a parked silver van with its door open, a man in a striped shirt and blue pants exits and walks toward the ego vehicle, potentially stepping into its path. To the immediate right, a white box truck is stopped at the curb while a worker handles cargo at its open rear, narrowing the lane. Several white vans ahead in the same direction pause or creep near the left curb, constraining the ego vehicle's pace. Parked vehicles on both sides create intermittent pinch points.", "hazard_reasoning": "There is a man wearing a striped shirt and blue pants, and walking towards the ego car, on the left side of the road, because he is exiting a parked vehicle. The pedestrian may enter the travel lane unexpectedly, so the driver should yield to avoid a collision."}
{"id": "train_04089", "split": "train", "clip_key": "2020-0129-144857_059146_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "059146"}, "frames": ["2020-0129-144857_059146_movie_t-3.jpg", "2020-0129-144857_059146_movie_t-2.jpg", "2020-0129-144857_059146_movie_t-1.jpg", "2020-0129-144857_059146_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road crosses a bridge with one lane per direction, a solid orange center line with a narrow central strip, guardrails on both sides, smooth pavement, and light to moderate traffic as the grade descends ahead. A white box truck is ahead in the ego lane driving away from the camera, continuing straight and loosely setting the pace. In the opposite lane to the right, a small black van and a larger white truck approach and pass steadily as oncoming traffic. Farther ahead beyond the white truck, several cars move along near the base of the bridge. A pedestrian stands on the left sidewalk behind the barrier and remains clear of the road.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The truck ahead may slow down unexpectedly, so the driver should maintain caution and a safe following distance."}
{"id": "train_04090", "split": "train", "clip_key": "titan_clip_177_000150_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_177_000150_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_177_000150_movie_t-3_augB1.jpg", "titan_clip_177_000150_movie_t-2_augB1.jpg", "titan_clip_177_000150_movie_t-1_augB1.jpg", "titan_clip_177_000150_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist crossing the street", "environment_perception": "An urban commercial street with tall buildings forms a two-lane two-way road without a median and with smooth pavement; traffic is light to moderate and briefly slows near a crosswalk. A white kei car directly ahead in the left ego lane cruises and then decelerates. A cyclist wearing a cap and a white shirt crosses from left to right in the middle of the road ahead, briefly entering the ego path and prompting the lead car to check speed. On the left by the convenience store, several pedestrians approach the crosswalk and wait at the curb, close enough that they could enter after the cyclist. Farther ahead, a box truck in the same direction proceeds slowly, tempering the overall pace.", "hazard_reasoning": "There is a cyclist wearing a cap and a white shirt, and crossing the street from left to right, in the middle of the road. The driver must yield because the cyclist is actively crossing the roadway and poses a collision risk."}
{"id": "train_04091", "split": "train", "clip_key": "2020-0207-151349_005794_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "005794"}, "frames": ["2020-0207-151349_005794_movie_t-3.jpg", "2020-0207-151349_005794_movie_t-2.jpg", "2020-0207-151349_005794_movie_t-1.jpg", "2020-0207-151349_005794_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban narrow two-way street with a single lane in each direction climbs uphill between buildings and metal railings; the pavement is dry and smooth, and traffic is light. Strong sun glare from ahead washes out detail near the crest. A small boxy van travels ahead in the ego lane, steadily ascending and setting a slow pace for the ego vehicle. The opposite lane remains empty in view with no oncoming traffic. No traffic signals or notable signs are visible, and there are no pedestrians, bicycles, or parked vehicles encroaching on the roadway.", "hazard_reasoning": "No immediate hazards detected; maintain awareness due to limited visibility around the curve ahead."}
{"id": "train_04092", "split": "train", "clip_key": "2020-0129-144857_002993_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "002993"}, "frames": ["2020-0129-144857_002993_movie_t-3.jpg", "2020-0129-144857_002993_movie_t-2.jpg", "2020-0129-144857_002993_movie_t-1.jpg", "2020-0129-144857_002993_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single lane in each direction and no median, the asphalt dry and slightly worn as the car approaches a cross street, with moderate traffic. A black SUV ahead in the ego lane slows due to congestion ahead, constraining our pace. Oncoming traffic to the right, led by a silver sedan near the centerline, passes by while continuing straight. A white van and several cars queue farther along in the oncoming lane and creep forward. A white minivan is stopped at the left curb by the crosswalk.", "hazard_reasoning": "There is a black SUV slowing in the ego lane because of traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and avoid collision with the decelerating vehicle ahead."}
{"id": "train_04093", "split": "train", "clip_key": "2020-0214-145407_013594_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "013594"}, "frames": ["2020-0214-145407_013594_movie_t-3.jpg", "2020-0214-145407_013594_movie_t-2.jpg", "2020-0214-145407_013594_movie_t-1.jpg", "2020-0214-145407_013594_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban signalized intersection on a multi-lane road has smooth pavement and light-to-moderate flow as the ego vehicle approaches the zebra crossing. A white van ahead in the ego lane drives away as the road ahead is clear, widening the gap in front. Slightly left ahead, a dark minivan remains stopped at the crosswalk, constraining the ego's approach. Farther right ahead, another black van continues straight through the junction without slowing. On the left sidewalk, several pedestrians and a person with a bicycle wait at the curb and do not enter the crosswalk. The pedestrian signal shows red with a countdown, keeping people from crossing.", "hazard_reasoning": "There is a white van driving away from the ego car, because the road ahead is clear, in front of the ego car. The driver should follow the vehicle ahead at a safe distance in case it brakes suddenly."}
{"id": "train_04094", "split": "train", "clip_key": "2020-0220-151845_036332_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "036332"}, "frames": ["2020-0220-151845_036332_movie_t-3.jpg", "2020-0220-151845_036332_movie_t-2.jpg", "2020-0220-151845_036332_movie_t-1.jpg", "2020-0220-151845_036332_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with guardrails and smooth pavement; traffic is moderate and all lanes visible carry the same direction of travel. A red truck ahead in the ego lane slows, constraining the ego car's pace. A white minivan in the adjacent right lane travels straight slightly ahead at steady speed, remaining in its lane and not impeding the ego vehicle. A dark car on the far right draws level and proceeds forward in its lane, effectively passing the ego car without merging. Bicycles are parked along the left sidewalk, separated by a railing.", "hazard_reasoning": "There is a red truck slowing in the ego lane in front of the ego car. The slowing truck may cause the driver to reduce speed unexpectedly, increasing the risk of a rear-end collision, so the driver should slow down."}
{"id": "train_04095", "split": "train", "clip_key": "2020-0203-114632_081586_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "081586"}, "frames": ["2020-0203-114632_081586_movie_t-3.jpg", "2020-0203-114632_081586_movie_t-2.jpg", "2020-0203-114632_081586_movie_t-1.jpg", "2020-0203-114632_081586_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street runs under an elevated structure with a fenced parking area on the right and planters along the left curb; the pavement is smooth and traffic is light. Ahead in the ego lane, a gray van drives away at a steady speed, gradually increasing the gap and informally setting the pace. Parked vehicles remain behind the fences and along driveways, and no other road users interact with the ego vehicle.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04096", "split": "train", "clip_key": "2020-0203-114632_049559_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "049559"}, "frames": ["2020-0203-114632_049559_movie_t-3.jpg", "2020-0203-114632_049559_movie_t-2.jpg", "2020-0203-114632_049559_movie_t-1.jpg", "2020-0203-114632_049559_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Yield to the cyclist", "environment_perception": "An urban two-way road with one lane per direction and no median runs between buildings; the asphalt looks smooth and traffic is light. Ahead at a zebra crossing, a cyclist in a black jacket rides right to left on the pedestrian crossing, entering the ego lane and briefly constraining its path. In the opposite lane, a silver van and a larger truck approach from ahead, continuing straight as oncoming traffic and remaining in their lane. A 50 speed-limit sign is visible on the left roadside.", "hazard_reasoning": "There is a cyclist wearing a black jacket and cycling in the pedestrian crossing, to the left side of the road. The driver should yield to the cyclist as they are crossing the roadway on the crosswalk."}
{"id": "train_04097", "split": "train", "clip_key": "2020-0228-102841_002379_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_002379_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_002379_movie_t-3_augB1.jpg", "2020-0228-102841_002379_movie_t-2_augB1.jpg", "2020-0228-102841_002379_movie_t-1_augB1.jpg", "2020-0228-102841_002379_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop to avoid hitting pedestrian", "environment_perception": "An urban alley-like shopping street forms a very narrow two-way road with no centerline or sidewalks, smooth pavement, and light vehicle traffic amid many pedestrians. In the center ahead, a pedestrian in black walks away from the ego car along the lane, doing so because a bicycle is parked in the pedestrian space on the left. On the right edge near the camera, two pedestrians walk toward the vehicle along the curb, partly in the roadway and constricting the available width. On the left beside a shop, another person stands at the curb next to stacked goods and a parked bicycle that protrude into the walking area. Far ahead beneath a rail bridge, an oncoming car approaches slowly in the opposite direction but remains distant.", "hazard_reasoning": "There's a pedestrian wearing black pants and a black jacket walking in front of and away from the ego car, away from the ego car, because of a bicycle parked in the pedestrian lane. The pedestrian is entering the driving lane unexpectedly due to the obstructed sidewalk, so the driver must stop to avoid hitting them."}
{"id": "train_04098", "split": "train", "clip_key": "2020-0207-101955_018024_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "018024"}, "frames": ["2020-0207-101955_018024_movie_t-3.jpg", "2020-0207-101955_018024_movie_t-2.jpg", "2020-0207-101955_018024_movie_t-1.jpg", "2020-0207-101955_018024_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "A divided urban arterial with multiple lanes in each direction runs through a dense cityscape; pavement is in good condition and traffic is moderate, bunching toward a signalized junction ahead. A brown and white truck directly ahead in the ego lane slows as vehicles queue, constraining the ego car. A silver car farther ahead in the left same-direction lane proceeds slowly near the curb. Oncoming traffic, including a white van in the right-side lanes, moves past without conflict. A large box truck is parked at the left curb with its loading ramp down, encroaching into the left lane and narrowing the roadway.", "hazard_reasoning": "A brown and white truck slowing down in the ego lane because of traffic congestion ahead. This indicates congested traffic ahead and the driver should slow down to maintain a safe following distance."}
{"id": "train_04099", "split": "train", "clip_key": "2020-0210-142719_001465_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "001465"}, "frames": ["2020-0210-142719_001465_movie_t-3.jpg", "2020-0210-142719_001465_movie_t-2.jpg", "2020-0210-142719_001465_movie_t-1.jpg", "2020-0210-142719_001465_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked vehicle", "environment_perception": "An urban shopping street with one lane in each direction and a dashed centerline stretches ahead on smooth pavement, with moderate, slow-moving traffic and metal railings along both sidewalks. A silver sedan is parked on the left side of the road ahead, slightly protruding into the ego lane and requiring a mild drift right to pass. A bicyclist rides just ahead near the center-left, moving slowly around the parked car and potentially entering the ego path, which constrains the ego vehicle's pace. An oncoming blue hatchback approaches in the right-side lane, staying in its lane but narrowing the available gap. A 40 km/h speed limit sign is visible on the left.", "hazard_reasoning": "There is a silver sedan parked on the left side of the road. Driver should manoeuvre carefully around the parked vehicle to maintain safe clearance."}
{"id": "train_04100", "split": "train", "clip_key": "2020-0228-102841_078151_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "078151"}, "frames": ["2020-0228-102841_078151_movie_t-3.jpg", "2020-0228-102841_078151_movie_t-2.jpg", "2020-0228-102841_078151_movie_t-1.jpg", "2020-0228-102841_078151_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with smooth pavement and no median approaches a signalized intersection, and same-direction traffic is moderate with a short queue. A white van is stopped directly ahead in the ego lane because the traffic signal is red, holding the ego vehicle. Slightly ahead to the right, a motorcyclist waits near the lane line at the stop line, close to the ego lane. In the lane to the left front, a white sedan queues in parallel and inches forward, limiting room to change lanes. To the right, a dark minivan also waits in its lane with the queue.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver needs to stop promptly to avoid a rear-end collision with the halted vehicle ahead."}
{"id": "train_04101", "split": "train", "clip_key": "2020-0203-114632_031250_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "031250"}, "frames": ["2020-0203-114632_031250_movie_t-3.jpg", "2020-0203-114632_031250_movie_t-2.jpg", "2020-0203-114632_031250_movie_t-1.jpg", "2020-0203-114632_031250_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In a dense urban corridor, the ego vehicle proceeds on a well-paved multi-lane road with same-direction traffic and no physical median, where flow is heavy and slow. A white van drives ahead in the ego lane at low speed, directly constraining the ego car's pace. In the adjacent right lane, a larger white van slightly ahead creeps forward beside the ego vehicle, reducing space for any lane change. Farther right, a city bus moves along the curb lane with a short queue behind it, occupying the area near the sidewalk. No-stopping signs are posted on the left side of the street.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04102", "split": "train", "clip_key": "2020-0214-102601_026606_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "026606"}, "frames": ["2020-0214-102601_026606_movie_t-3.jpg", "2020-0214-102601_026606_movie_t-2.jpg", "2020-0214-102601_026606_movie_t-1.jpg", "2020-0214-102601_026606_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road with smooth asphalt runs between mid-rise buildings, with a metal barrier and separated carriageway on the right; traffic is moderate and moving steadily. A white box truck directly ahead in the ego lane accelerates and pulls away, setting the pace and blocking forward visibility. A dark van slightly ahead in the lane to the left continues straight at a similar speed, staying in its lane and not entering the ego path. Traffic on the roadway beyond the right-side barrier proceeds along the parallel stream and remains separated.", "hazard_reasoning": "There is a white truck accelerating in front of the ego car, in the ego lane. The driver should follow the vehicle ahead safely by matching its speed increase and keeping a safe distance."}
{"id": "train_04103", "split": "train", "clip_key": "2020-0207-101955_110918_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "110918"}, "frames": ["2020-0207-101955_110918_movie_t-3.jpg", "2020-0207-101955_110918_movie_t-2.jpg", "2020-0207-101955_110918_movie_t-1.jpg", "2020-0207-101955_110918_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane road under an elevated structure carries same-direction traffic on smooth asphalt, with heavy stop-and-go flow. Directly ahead in the ego lane, a blue sedan slows as a silver minivan in the lane to the right edges left and merges into the ego lane. A large box truck ahead in the left lane creeps forward beside the sedan, narrowing the available gap in front. On the right, a flatbed truck runs alongside the ego car at low speed, keeping pace and boxing in the lane. Overhead Japanese direction signs hang from the structure, with no active traffic signals clearly visible.", "hazard_reasoning": "There is a blue sedan slowing in the ego lane, in front of the ego car, because of a vehicle lane changing into the ego lane ahead. The driver should slow down to maintain a safe following distance and avoid a collision with the merging vehicle."}
{"id": "train_04104", "split": "train", "clip_key": "2020-0220-151845_057095_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "057095"}, "frames": ["2020-0220-151845_057095_movie_t-3.jpg", "2020-0220-151845_057095_movie_t-2.jpg", "2020-0220-151845_057095_movie_t-1.jpg", "2020-0220-151845_057095_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided roadway runs under elevated structures with two same-direction lanes, a concrete wall on the right and a guardrail on the left; the dry pavement is smooth and traffic is moderate but compressing into a slowdown ahead. Directly ahead in the ego lane, a flatbed truck carrying a yellow-covered load decelerates as traffic bunches under the overpass, so it governs the ego vehicle's pace. In the adjacent right lane slightly ahead, a light-blue minivan advances then brakes to match the queue, occupying the space that would allow a lane change. Farther ahead in the right lane, a small silver van continues into the same congestion, keeping a short gap to vehicles ahead. No unusual signs or hazards are prominent.", "hazard_reasoning": "There is a pink truck slowing down in the ego lane, because of traffic congestion ahead. The pink truck is reducing speed due to downstream congestion, so the driver should slow down to maintain a safe following distance and prevent a collision."}
{"id": "train_04105", "split": "train", "clip_key": "titan_clip_388_000516_movie", "source": {"subset": "titan", "scenario": "clip_388", "frame": "000516"}, "frames": ["titan_clip_388_000516_movie_t-3.jpg", "titan_clip_388_000516_movie_t-2.jpg", "titan_clip_388_000516_movie_t-1.jpg", "titan_clip_388_000516_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around parked white truck", "environment_perception": "A narrow urban shopping street with a single shared lane and no divider stretches ahead, paved with interlocking bricks and carrying very light, slow traffic. Ahead on the left side of the road, a white truck is parked partly in the ego lane, reducing the available width and constraining the ego vehicle's path. On the right edge near the ego, a person pushing a blue handcart moves toward the camera along the curb and may encroach on the lane. Farther ahead near the center, another pedestrian walks away in the roadway, influencing the pace. A small delivery scooter stands parked on the left, and storefront displays and signs narrow the passage.", "hazard_reasoning": "There is a white truck parked in the ego lane, on the left side of the road, because there is no parking spot. The parked truck blocks the lane, requiring the driver to manoeuvre around it to avoid a collision."}
{"id": "train_04106", "split": "train", "clip_key": "titan_clip_84_000102_movie", "source": {"subset": "titan", "scenario": "clip_84", "frame": "000102"}, "frames": ["titan_clip_84_000102_movie_t-3.jpg", "titan_clip_84_000102_movie_t-2.jpg", "titan_clip_84_000102_movie_t-1.jpg", "titan_clip_84_000102_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked vehicle.", "environment_perception": "An urban two-way street with one narrow lane each direction and no physical median; the pavement is smooth and traffic is moderate, moving slowly because the left curb is lined with parked vehicles. Ahead in the ego lane, a black wagon proceeds slowly past obstacles, effectively setting the ego car's pace. A green sedan is parked ahead on the left in front of the ego-car, tight to the curb but encroaching slightly into the lane, further narrowing the passage. A white motorcycle with its rider stands just before the sedan at the left edge, stationary and protruding into the lane. On the right, an oncoming white box truck travels past in its lane, passing close due to the constricted roadway.", "hazard_reasoning": "There is a green sedan parked on the left side of the road in front of the ego-car. The driver should carefully manoeuvre around the parked vehicle because it reduces available lane width and poses a collision risk."}
{"id": "train_04107", "split": "train", "clip_key": "2020-0220-151845_060724_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "060724"}, "frames": ["2020-0220-151845_060724_movie_t-3.jpg", "2020-0220-151845_060724_movie_t-2.jpg", "2020-0220-151845_060724_movie_t-1.jpg", "2020-0220-151845_060724_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway runs through a covered section with sound-barrier walls, two same-direction lanes and smooth pavement, and traffic is heavy and slow. A red truck with a tarped load is directly ahead in the ego lane, slowing to a crawl because congestion stretches forward, so it sets the ego vehicle's pace. To the right, a dense line of kei vans and cars creeps alongside, some edging toward the lane line and potentially merging into the ego lane. A small car sits close on the right foreground, partly in the lane, adding to the crowding. No signals are visible in this tunnel-like segment.", "hazard_reasoning": "There is a red truck slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed caused by congestion."}
{"id": "train_04108", "split": "train", "clip_key": "2020-0217-110854_070691_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "070691"}, "frames": ["2020-0217-110854_070691_movie_t-3.jpg", "2020-0217-110854_070691_movie_t-2.jpg", "2020-0217-110854_070691_movie_t-1.jpg", "2020-0217-110854_070691_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban road with two same-direction lanes passes under a pedestrian overpass; the pavement is dry and intact and traffic is light. A gray mini-truck ahead in the ego lane drives away from the camera at a steady pace, effectively setting the ego vehicle's speed. To its right, a white cab-over truck in the adjacent lane proceeds forward near a right-side taper and may merge left into the ego lane. Farther ahead, a few passenger cars continue straight with generous gaps. Guardrails line both sides, and several parked vehicles sit along the right curb.", "hazard_reasoning": "There is a gray truck driving in the ego lane away from the ego car. The truck may soon stop at the visible stop sign ahead, so the driver should be prepared to slow down and maintain safe spacing."}
{"id": "train_04109", "split": "train", "clip_key": "2020-0131-135401_006422_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "006422"}, "frames": ["2020-0131-135401_006422_movie_t-3.jpg", "2020-0131-135401_006422_movie_t-2.jpg", "2020-0131-135401_006422_movie_t-1.jpg", "2020-0131-135401_006422_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with no median runs past mid-rise buildings, the pavement smooth and traffic light amid strong sun glare from the right. A white box truck ahead in the ego lane slows and sets the pace. A small white van is stopped at the left curb by a storefront, remaining outside the travel lane. No prominent signals are visible, and metal railings line the right sidewalk.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The slowing truck ahead could require the driver to reduce speed to maintain a safe distance and avoid a collision."}
{"id": "train_04110", "split": "train", "clip_key": "2020-0227-104226_024795_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "024795"}, "frames": ["2020-0227-104226_024795_movie_t-3.jpg", "2020-0227-104226_024795_movie_t-2.jpg", "2020-0227-104226_024795_movie_t-1.jpg", "2020-0227-104226_024795_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban corridor under an elevated structure carries two same-direction lanes with guardrails and a right-side sound barrier; the pavement is dry and traffic is slow. Directly ahead in the ego lane, a blue truck slows and constrains the ego vehicle's pace. Slightly ahead to the left, a large construction truck proceeds at low speed in the adjacent lane, limiting opportunities to pass. On a separated roadway further left, a red bus moves independently and does not interact with the ego lane. No traffic signals are visible, and there are no pedestrians or cyclists in the scene.", "hazard_reasoning": "There is a blue truck slowing down in the ego lane. This deceleration ahead could force the driver to brake abruptly to maintain a safe following distance, so the driver should reduce speed early to avoid a collision."}
{"id": "train_04111", "split": "train", "clip_key": "2020-0225-145150_044379_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "044379"}, "frames": ["2020-0225-145150_044379_movie_t-3.jpg", "2020-0225-145150_044379_movie_t-2.jpg", "2020-0225-145150_044379_movie_t-1.jpg", "2020-0225-145150_044379_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes runs straight past midrise buildings; the pavement is dry and smooth, and traffic is heavy with a stop-and-go pace. A blue van directly ahead in the ego right lane slows to a stop because congestion forms in front of it, blocking the ego vehicle's path. Farther ahead in the inner lane, a large white box truck creeps forward, contributing to the backup and setting the pace for vehicles in that lane. A black SUV alongside to the left inches forward next to the ego car, reducing gaps for a lane change. A metal fence lines the right shoulder.", "hazard_reasoning": "There is a blue van slowing down to a stop in the ego lane, because of traffic congestion ahead. The driver should stop to avoid rear-ending the van due to the congestion."}
{"id": "train_04112", "split": "train", "clip_key": "2020-0131-135401_000615_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "000615"}, "frames": ["2020-0131-135401_000615_movie_t-3.jpg", "2020-0131-135401_000615_movie_t-2.jpg", "2020-0131-135401_000615_movie_t-1.jpg", "2020-0131-135401_000615_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each way runs straight between mid-rise buildings, divided by a yellow center line; the pavement is dry and intact, and traffic appears light to moderate. A white box truck ahead in the ego lane moves slowly and then further slows, constrained by congestion farther ahead. In the opposite lane, a white minivan approaches from ahead at a steady pace while staying within its lane. Pedestrians walk along the left sidewalk near the curb without stepping into the roadway, and several vehicles are parked along the curbs.", "hazard_reasoning": "There is a white truck slowing in the ego lane, away from the ego car, because of traffic congestion ahead. The ego-vehicle should reduce speed to maintain a safe following distance and adapt to the slowing traffic."}
{"id": "train_04113", "split": "train", "clip_key": "2020-0129-144857_039508_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "039508"}, "frames": ["2020-0129-144857_039508_movie_t-3.jpg", "2020-0129-144857_039508_movie_t-2.jpg", "2020-0129-144857_039508_movie_t-1.jpg", "2020-0129-144857_039508_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs under an elevated structure, bordered by a right-side guardrail and fence, with dry pavement and heavy, slow traffic. A black van directly ahead in the ego lane is stopped at a red light, holding the ego car. Farther ahead in the same lane, a box truck waits with brake lights on, extending the queue. In the adjacent left lane, a white hatchback and a small van are halted alongside or creeping, staying parallel to the ego car and limiting merging options. No oncoming traffic is visible in this scene.", "hazard_reasoning": "There is a black van stopped in the ego lane, in front of the ego car, because of red traffic lights. The driver needs to stop to avoid a collision with the halted van due to the red light."}
{"id": "train_04114", "split": "train", "clip_key": "2020-0131-103016_028516_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "028516"}, "frames": ["2020-0131-103016_028516_movie_t-3.jpg", "2020-0131-103016_028516_movie_t-2.jpg", "2020-0131-103016_028516_movie_t-1.jpg", "2020-0131-103016_028516_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs between office buildings and a tree-lined park, with smooth pavement, fenced sidewalks, and light, steady traffic. A white box truck ahead in the center ego lane continues straight and pulls away as the road ahead is clear, widening the gap. A small van travels slightly farther ahead in the left lane at a similar speed and remains in its lane without encroaching on the ego path. The rightmost lane is empty near the ego vehicle. Lane arrows indicate the left lane for left turns, the center for through traffic, and the right lane for right turns.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04115", "split": "train", "clip_key": "2020-0228-102841_087721_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "087721"}, "frames": ["2020-0228-102841_087721_movie_t-3.jpg", "2020-0228-102841_087721_movie_t-2.jpg", "2020-0228-102841_087721_movie_t-1.jpg", "2020-0228-102841_087721_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multilane arterial approaches a wide signalized intersection, with three same-direction lanes and a raised curb island on the right; the pavement is smooth and traffic is light and currently halted at a red light. A white sedan directly ahead in the ego lane is stopped at the stop line because the signal ahead is red, holding the ego vehicle. A silver sedan in the lane to the left stands still alongside, keeping pace with the queue and limiting any lateral movement. A large truck farther left in the outer lane is also stationary at the intersection with its nose slightly ahead of the ego car, partially obscuring the left view. Overhead traffic signals facing the ego direction display solid red.", "hazard_reasoning": "There is a white sedan stopped in the ego lane because of a red light up ahead. The driver should stop immediately to avoid rear-ending the vehicle and comply with the red signal."}
{"id": "train_04116", "split": "train", "clip_key": "titan_clip_436_000396_movie", "source": {"subset": "titan", "scenario": "clip_436", "frame": "000396"}, "frames": ["titan_clip_436_000396_movie_t-3.jpg", "titan_clip_436_000396_movie_t-2.jpg", "titan_clip_436_000396_movie_t-1.jpg", "titan_clip_436_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban commercial street with shopfronts lines both sides; the narrow, stone-paved roadway has no centerline or median, and traffic is light with a single stopped vehicle. A flatbed delivery truck stands along the left edge with crates on its bed, protruding into the roadway and narrowing the available lane ahead. On the right side a pedestrian wearing a blue shirt and black pants, carrying a black coat, walks toward the camera near the curb and angles toward the roadway, potentially entering the ego vehicle's path. Farther ahead, another pedestrian in the lane walks away from the camera between the truck and the center, which constrains the available path. No signals or speed signs are prominent.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, black pants, and carrying a black coat, walking on the right side of the road toward the ego car. The driver should manoeuvre carefully around this pedestrian to avoid a collision as they approach the vehicle."}
{"id": "train_04117", "split": "train", "clip_key": "2020-0214-102601_050946_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "050946"}, "frames": ["2020-0214-102601_050946_movie_t-3.jpg", "2020-0214-102601_050946_movie_t-2.jpg", "2020-0214-102601_050946_movie_t-1.jpg", "2020-0214-102601_050946_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial under an elevated roadway carries two same-direction lanes with a metal median barrier on the right and dry, intact pavement, and oncoming traffic moves on the far side of the barrier to the right. Traffic is heavy and slow, forming a persistent queue ahead. A blue hatchback directly ahead in the ego lane slows and pulls away slightly because of congestion ahead, effectively setting our pace. To the left, a tarpaulin-covered small truck creeps forward in the adjacent lane alongside and just ahead, reducing opportunities to merge. Farther ahead, a line of cars in both lanes inches toward a larger truck, keeping the queue dense. A blue route 41 sign is visible overhead.", "hazard_reasoning": "There is a blue hatchback in the ego lane, slowing down away from the ego car, because of traffic congestion ahead. The driver should follow the vehicle ahead to adapt speed and maintain a safe following distance in congested traffic."}
{"id": "train_04118", "split": "train", "clip_key": "titan_clip_651_000246_movie", "source": {"subset": "titan", "scenario": "clip_651", "frame": "000246"}, "frames": ["titan_clip_651_000246_movie_t-3.jpg", "titan_clip_651_000246_movie_t-2.jpg", "titan_clip_651_000246_movie_t-1.jpg", "titan_clip_651_000246_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban back street with a single narrow two-way carriageway and no median runs between buildings; the pavement is smooth and traffic is light with no vehicles. On the left, a pedestrian in a black suit walks away from the ego vehicle along the curb, close to the lane edge and potentially entering the path. On the right close by, another pedestrian walks toward the ego vehicle along the green shoulder, creating a near-side passing interaction. Farther ahead on the right, a worker pushes a green cart in the same direction, occupying part of the roadway and reducing the usable width for the ego vehicle.", "hazard_reasoning": "There is a pedestrian wearing a black suit and walking away from the ego car, on the left side of the road. The pedestrian's proximity to the roadway could require extra caution, so the driver should slow down to maintain a safe buffer."}
{"id": "train_04119", "split": "train", "clip_key": "titan_clip_803_000570_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_803_000570_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_803_000570_movie_t-3_augB1.jpg", "titan_clip_803_000570_movie_t-2_augB1.jpg", "titan_clip_803_000570_movie_t-1_augB1.jpg", "titan_clip_803_000570_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre around the parked motorcycle carefully.", "environment_perception": "An urban two-way street with a single central line and worn pavement runs between close buildings under hazy glare, and traffic flow is light. An oncoming cyclist near the left edge approaches toward the camera along the opposing side and passes close to the ego vehicle's path. Another cyclist ahead near the centerline rides away in the same direction at low speed, setting the pace for the ego vehicle. A brown motorcycle is parked on the right side just ahead, as noted, and it, along with another scooter nearby, narrows the usable lane.", "hazard_reasoning": "There is a brown motorcycle parked on the right side of the road in front of the ego-car. The parked motorcycle narrows the driving lane and may force the driver to deviate from their path, requiring careful manoeuvring to avoid collision."}
{"id": "train_04120", "split": "train", "clip_key": "titan_clip_201_000036_movie", "source": {"subset": "titan", "scenario": "clip_201", "frame": "000036"}, "frames": ["titan_clip_201_000036_movie_t-3.jpg", "titan_clip_201_000036_movie_t-2.jpg", "titan_clip_201_000036_movie_t-1.jpg", "titan_clip_201_000036_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban commercial street with a single narrow travel lane runs between storefronts, with no divider and intact pavement; traffic is very light with no vehicles ahead. On the right, a pedestrian wearing a white shirt and black pants walks toward the ego vehicle along the edge by the bollards and may enter the lane. On the left, a pedestrian waits at the curb outside a shop beside A-frame signs that protrude into the roadway, potentially encroaching on the vehicle's path. Farther ahead near the center-right, another pedestrian walks along the curb away from the camera without entering the lane. Numerous A-frame boards and closely spaced bollards line both sides and locally narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and walking towards the ego car, on the right side of the road. The pedestrian may enter the roadway unexpectedly, so the driver should stay alert and be prepared to slow down."}
{"id": "train_04121", "split": "train", "clip_key": "titan_clip_643_000414_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_643_000414_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_643_000414_movie_t-3_augB1.jpg", "titan_clip_643_000414_movie_t-2_augB1.jpg", "titan_clip_643_000414_movie_t-1_augB1.jpg", "titan_clip_643_000414_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian", "environment_perception": "An urban two-way street with one lane each direction and no median appears, bordered by buildings; the pavement is smooth and traffic is light. A white van is stopped ahead along the left curb, protruding into the ego lane and constraining the path. A pedestrian wearing a black T-shirt and black pants walks beside the van toward its door to enter, moving in the roadway close to the ego lane and forming a near-side obstruction. An oncoming car travels toward the camera in the right lane farther ahead, proceeding steadily in its own lane. Bicycles are parked on the left sidewalk and no salient signals or signs are evident.", "hazard_reasoning": "a pedestrian wearing a black t-shirt with black pant is walking on the left side of the road close to the ego lane because he's entering the parked vehicle. The pedestrian's proximity to the traffic lane may lead him to step into your path, so be aware of pedestrian."}
{"id": "train_04122", "split": "train", "clip_key": "titan_clip_1258_000414_movie", "source": {"subset": "titan", "scenario": "clip_1258", "frame": "000414"}, "frames": ["titan_clip_1258_000414_movie_t-3.jpg", "titan_clip_1258_000414_movie_t-2.jpg", "titan_clip_1258_000414_movie_t-1.jpg", "titan_clip_1258_000414_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "An urban residential street with closely spaced buildings forms a narrow two-way roadway without a centerline; the ego-vehicle continues straight along the left side on smooth pavement, and traffic is light with no other vehicles nearby. Ahead on the right curb, a man with a backpack in beige pants stands using a vending machine, stationary near the edge of the road as the car approaches. No notable traffic signals or signs are visible, and the street is otherwise clear of obstacles.", "hazard_reasoning": "There is a man carrying a backpack, wearing beige pants, and standing on the right side of the road, because he is using a vending machine. He could step into the traffic lane unexpectedly while focused on the machine, so drivers need to be cautious and prepared to yield."}
{"id": "train_04123", "split": "train", "clip_key": "2020-0213-143552_065246_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "065246"}, "frames": ["2020-0213-143552_065246_movie_t-3.jpg", "2020-0213-143552_065246_movie_t-2.jpg", "2020-0213-143552_065246_movie_t-1.jpg", "2020-0213-143552_065246_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes runs on smooth, dry pavement, separated from oncoming traffic by a raised shrub median; traffic flows at a moderate, steady pace. A white box truck ahead in the ego lane proceeds steadily through the intersection as the signal shows green, effectively setting the ego vehicle's speed. Slightly ahead and left in the same lane, a dark hatchback cruises near the curb behind the truck, maintaining its position and limiting how quickly the ego car can advance. In the adjacent right lane, a small white car moves past at a slightly higher speed without signaling a merge, remaining non-conflicting.", "hazard_reasoning": "There is a white truck driving in the ego lane, in front of the ego car, because the traffic light is green. Be aware that the truck ahead could slow unexpectedly at the intersection, so maintain a safe distance."}
{"id": "train_04124", "split": "train", "clip_key": "2020-0228-150133_004528_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "004528"}, "frames": ["2020-0228-150133_004528_movie_t-3.jpg", "2020-0228-150133_004528_movie_t-2.jpg", "2020-0228-150133_004528_movie_t-1.jpg", "2020-0228-150133_004528_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction and a marked bicycle lane along the left curb runs between buildings and a walled sidewalk; the pavement is dry and intact, and traffic is light but momentarily halted. A white box truck is stopped directly ahead in the ego lane, holding the ego vehicle. In the opposing lane to the right, a small white truck stands near the curb slightly ahead, leaving the center clear and not entering the ego path. Another light truck sits farther ahead on that side. Metal railings border the bicycle lane on the left.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. Because the stopped truck blocks the view of the red traffic light and intersection ahead, the driver should stop promptly to avoid running the red signal."}
{"id": "train_04125", "split": "train", "clip_key": "titan_clip_382_000234_movie", "source": {"subset": "titan", "scenario": "clip_382", "frame": "000234"}, "frames": ["titan_clip_382_000234_movie_t-3.jpg", "titan_clip_382_000234_movie_t-2.jpg", "titan_clip_382_000234_movie_t-1.jpg", "titan_clip_382_000234_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "The camera moves along a narrow urban commercial street with interlocking pavers, no marked lanes or median, and storefronts on both sides; there is no vehicular traffic and pedestrian flow is moderate. A man wearing black pants and a white shirt, carrying a handbag, walks along the left side away from the vehicle, keeping near the edge yet occupying the roadway ahead. Two men on the right side walk toward the vehicle beside the shopfronts, holding bags and staying close to the curb, parallel to the path. A woman on the left sidewalk walks toward the vehicle near the curb. Restaurant signs, menus, and a few bicycles line the edges, slightly narrowing the passage.", "hazard_reasoning": "A man wearing black pants and a white shirt, carrying a handbag, and walking on the left side of the road, away from the ego car. He is close to the vehicle's path and may change direction unexpectedly, so the driver should manoeuvre carefully around the pedestrian."}
{"id": "train_04126", "split": "train", "clip_key": "2020-0129-144857_006559_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "006559"}, "frames": ["2020-0129-144857_006559_movie_t-3.jpg", "2020-0129-144857_006559_movie_t-2.jpg", "2020-0129-144857_006559_movie_t-1.jpg", "2020-0129-144857_006559_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the minivan", "environment_perception": "An urban two-way street with one lane in each direction and no median runs between mid-rise buildings; the pavement is dry and in good condition, and traffic is light to moderate. Ahead in the left lane, a black minivan slows in front of the ego car because of congestion ahead, constraining the ego vehicle's pace. In the opposite lane, a silver minibus approaches and continues straight past without deviating toward the centerline. Farther ahead in our lane, a cyclist rides near the centerline in the same direction, potentially affecting following gaps once traffic resumes. An overhead sign indicates straight and right movements 50 m ahead.", "hazard_reasoning": "There is a black minivan slowing in the left lane, in front of the ego car, because of traffic congestion ahead. You should manoeuvre carefully around the slowing minivan to maintain a safe following distance and avoid a potential collision."}
{"id": "train_04127", "split": "train", "clip_key": "titan_clip_1067_000198_movie", "source": {"subset": "titan", "scenario": "clip_1067", "frame": "000198"}, "frames": ["titan_clip_1067_000198_movie_t-3.jpg", "titan_clip_1067_000198_movie_t-2.jpg", "titan_clip_1067_000198_movie_t-1.jpg", "titan_clip_1067_000198_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the pedestrian.", "environment_perception": "An urban backstreet with a single narrow lane and no center line runs between close buildings; the asphalt looks smooth and traffic is light with no other moving vehicles in either direction. Ahead on the left side of the road, a pedestrian walks toward the ego car along the gutter and may edge into the travel space. Parked scooters and bicycles cluster along the left curb near storefronts, locally narrowing the passage. Low planters and railings line the raised walkway on the right, creating a constricted feel but no obstruction. No traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian on the left side of the road, walking toward the ego car. The pedestrian is entering the vehicle's path, so the driver should yield to prevent a collision."}
{"id": "train_04128", "split": "train", "clip_key": "2020-0212-102546_022329_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "022329"}, "frames": ["2020-0212-102546_022329_movie_t-3.jpg", "2020-0212-102546_022329_movie_t-2.jpg", "2020-0212-102546_022329_movie_t-1.jpg", "2020-0212-102546_022329_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two same-direction lanes runs between mid-rise buildings, separated from oncoming traffic by a low hedged median; the pavement is dry and traffic is heavy with stop-and-go queuing. Directly ahead in the ego lane, a red hatchback is stopped because of congestion, holding the ego vehicle stationary. In the adjacent left lane, a white microvan creeps forward alongside and then inches past, moving slightly faster than the ego's lane. Farther ahead in the same lane, a large box truck waits in the queue near the intersection, keeping the line compressed.", "hazard_reasoning": "There is a red hatchback stopped in front of the ego car, because of traffic congestion ahead. The stopped vehicle signals congestion, requiring the driver to stop to prevent a collision."}
{"id": "train_04129", "split": "train", "clip_key": "titan_clip_519_000456_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_519_000456_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_519_000456_movie_t-3_augB1.jpg", "titan_clip_519_000456_movie_t-2_augB1.jpg", "titan_clip_519_000456_movie_t-1_augB1.jpg", "titan_clip_519_000456_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of crossing pedestrian", "environment_perception": "An urban neighborhood street with shops and apartments, a narrow two-way lane without a median and smooth pavement, has light traffic as the ego vehicle approaches a small intersection. Ahead in the center of the lane, a pedestrian in a white shirt and white pants crosses mid-road from left to right directly in front of the car, constraining the ego's pace. A red triangular stop sign stands at the left corner for the upcoming intersection. A small van is parked along the right curb and several bicycles are lined up on the left, slightly narrowing the approach.", "hazard_reasoning": "a pedestrian wearing a white shirt with white pant is crossing the street, in the middle of the road moving from the left to the right side of the road because of the clear road. The pedestrian is entering the vehicle's path and may not notice the oncoming car, so the driver should be aware to prevent a potential collision."}
{"id": "train_04130", "split": "train", "clip_key": "2020-0228-102841_025703_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "025703"}, "frames": ["2020-0228-102841_025703_movie_t-3.jpg", "2020-0228-102841_025703_movie_t-2.jpg", "2020-0228-102841_025703_movie_t-1.jpg", "2020-0228-102841_025703_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction and a painted median separating oncoming traffic runs between midrise buildings; the pavement is smooth and traffic is moderate but slows ahead. A black sedan directly in the ego lane slows as it approaches a short queue of vehicles, constraining the ego car's pace because of congestion ahead. In the adjacent right lane, a motorcycle moves forward and gradually passes while continuing straight without merging. Farther ahead, several cars remain bunched near the next block, maintaining the slowdown across the same-direction lanes. An overhead gantry shows a 50 speed limit.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane, because of traffic congestion ahead. The driver should reduce speed to maintain a safe following distance and avoid collision with slowing traffic ahead."}
{"id": "train_04131", "split": "train", "clip_key": "2020-0220-151845_030905_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "030905"}, "frames": ["2020-0220-151845_030905_movie_t-3.jpg", "2020-0220-151845_030905_movie_t-2.jpg", "2020-0220-151845_030905_movie_t-1.jpg", "2020-0220-151845_030905_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban three-lane arterial runs under an elevated roadway on dry asphalt with heavy, stop-and-go flow. A red flatbed truck directly ahead in the ego lane is stopped because congestion queues up ahead, blocking the ego car's path. A gray van in the lane to the right stands alongside at the same level, preventing an easy merge to the right. On the left, a small van waits slightly ahead in its lane as the queue extends forward, and a cyclist by the left curb pauses next to the vehicles and may edge along the line. The queue continues beneath the structure toward an intersection, and no other hazards are visible.", "hazard_reasoning": "There is a red truck stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The red truck is stopped in your lane due to congestion ahead, so you should stop to avoid a rear-end collision."}
{"id": "train_04132", "split": "train", "clip_key": "2020-0212-150403_004886_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "004886"}, "frames": ["2020-0212-150403_004886_movie_t-3.jpg", "2020-0212-150403_004886_movie_t-2.jpg", "2020-0212-150403_004886_movie_t-1.jpg", "2020-0212-150403_004886_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of yellow hatchback merging", "environment_perception": "An urban divided boulevard with two lanes in the ego's direction runs past tall buildings, bordered by a low hedge median on the right; the pavement is dry and traffic is light to moderate with smooth flow. Directly ahead, a yellow hatchback moves left from the ego lane into the adjacent left lane in front of the ego car. In that left lane, a dark SUV slightly ahead continues straight at steady speed, remaining ahead of the hatchback. Farther ahead, several vehicles travel in both lanes with clear gaps. Across the median, a few oncoming cars pass along the opposite carriageway.", "hazard_reasoning": "There is a yellow hatchback changing lanes in front of the ego car, to the left lane. The hatchback's maneuver may reduce spacing and require quick reaction to maintain safety."}
{"id": "train_04133", "split": "train", "clip_key": "2020-0226-140503_046139_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "046139"}, "frames": ["2020-0226-140503_046139_movie_t-3.jpg", "2020-0226-140503_046139_movie_t-2.jpg", "2020-0226-140503_046139_movie_t-1.jpg", "2020-0226-140503_046139_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with wet pavement carries heavy stop-and-go traffic; the ego car moves in the left-side lanes separated from oncoming traffic by a grass strip with railing. A black and white sedan with a roof light bar is stopped directly ahead in the ego lane because congestion blocks the way, keeping the ego vehicle stationary. To the left, a large box truck in the adjacent same-direction lane is also stopped alongside, narrowing space. Slightly ahead in the next lane, a white passenger car edges forward amid the queue and may enter the ego lane. To the right beyond the median, oncoming vehicles including a white van proceed slowly in the opposite lanes. Blue directional signs are visible ahead.", "hazard_reasoning": "There is a black and white sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. You should stop to avoid colliding with the stationary vehicle ahead under these conditions, as the wet road may increase stopping distance."}
{"id": "train_04134", "split": "train", "clip_key": "2020-0212-102546_045739_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "045739"}, "frames": ["2020-0212-102546_045739_movie_t-3.jpg", "2020-0212-102546_045739_movie_t-2.jpg", "2020-0212-102546_045739_movie_t-1.jpg", "2020-0212-102546_045739_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under an elevated expressway, with clean pavement and a narrow raised median around the pillars; traffic is heavy and queued at a signal. A white mid-size SUV directly ahead in the ego lane is stopped for a red light, holding the ego vehicle in place. In the adjacent lanes to the left, a black taxi and a silver van wait alongside in the same direction, forming a stationary queue that confines the ego lane. Farther ahead in the ego lane, a large dump truck sits near the front of the line, preceding the SUV. On the far right beyond the divider, a small car moves in the opposite direction without interacting with the queue. The traffic signal ahead shows red.", "hazard_reasoning": "There is a white mid-SUV stopped in front of the ego car, because of a red traffic light. Stop to avoid a collision with the stopped mid-SUV at the red light."}
{"id": "train_04135", "split": "train", "clip_key": "titan_clip_29_000276_movie", "source": {"subset": "titan", "scenario": "clip_29", "frame": "000276"}, "frames": ["titan_clip_29_000276_movie_t-3.jpg", "titan_clip_29_000276_movie_t-2.jpg", "titan_clip_29_000276_movie_t-1.jpg", "titan_clip_29_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban two-lane two-way street with no median and smooth pavement runs between midrise buildings, and traffic is light. A pedestrian carrying a handbag, wearing a black shirt and black pants, walks ahead on the left edge of the ego lane away from the car, staying close to the curb. An oncoming bicyclist rides toward the camera in the opposite lane near the centerline, continuing straight and slightly reducing clearance. Parked cars and a line of cones along the left curb near a driveway further narrow the ego lane, and no salient signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing a black shirt and black pants, and walking on the left side of the road away from the ego car. The pedestrian could unexpectedly step into the travel lane, so the driver should manoeuvre carefully around the pedestrian."}
{"id": "train_04136", "split": "train", "clip_key": "2020-0220-102630_109665_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "109665"}, "frames": ["2020-0220-102630_109665_movie_t-3.jpg", "2020-0220-102630_109665_movie_t-2.jpg", "2020-0220-102630_109665_movie_t-1.jpg", "2020-0220-102630_109665_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs between buildings, divided from oncoming traffic by a narrow raised median; the asphalt appears worn and traffic is light. A silver cargo truck travels ahead in the ego lane, moving away from the camera and effectively setting the ego vehicle's pace. In the opposite lanes to the right, a white van approaches steadily and continues straight without interacting. A person stands on the right sidewalk near shops, remaining off the roadway. An overhead blue directional sign spans the intersection ahead.", "hazard_reasoning": "There is a silver truck driving in the ego lane away from the ego car. The driver should be aware of the truck's potential to brake suddenly or change speed, impacting following distance."}
{"id": "train_04137", "split": "train", "clip_key": "2020-0217-110854_061776_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "061776"}, "frames": ["2020-0217-110854_061776_movie_t-3.jpg", "2020-0217-110854_061776_movie_t-2.jpg", "2020-0217-110854_061776_movie_t-1.jpg", "2020-0217-110854_061776_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway with a guardrail along the right edge, the pavement dry and traffic moderate. Ahead in the ego lane, a white coupe slows as another vehicle further up changes lanes into its path, briefly constraining the ego vehicle's pace. In the left adjacent lane, a dark van runs slightly ahead and continues straight without drifting toward the ego lane. Farther ahead in the middle lanes, a small white truck and several cars proceed at similar speed, shaping the flow. No signals are prominent and no unusual obstacles appear.", "hazard_reasoning": "There is a white coupe slowing in the ego lane because of another vehicle changing lanes ahead on the road. The coupe's deceleration indicates that the merging vehicle may cut in sharply, so the driver should slow down to maintain a safe distance and avoid a potential collision."}
{"id": "train_04138", "split": "train", "clip_key": "titan_clip_423_000066_movie", "source": {"subset": "titan", "scenario": "clip_423", "frame": "000066"}, "frames": ["titan_clip_423_000066_movie_t-3.jpg", "titan_clip_423_000066_movie_t-2.jpg", "titan_clip_423_000066_movie_t-1.jpg", "titan_clip_423_000066_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the unloaded truck.", "environment_perception": "An urban commercial street with a single marked lane runs between buildings, with a coned work zone along the left and bollard-lined sidewalk on the right; the pavement looks smooth and overall traffic is light but slowed by a blockage ahead. Ahead in the ego lane, a white truck faces toward the ego vehicle and is stopped for unloading, blocking the path. Along the left edge, two dump trucks are stationary inside the coned area, narrowing the usable lane but not moving. A pedestrian on the right sidewalk walks past storefronts and remains clear of the carriageway.", "hazard_reasoning": "There is a white truck stopped in the ego lane, towards the ego car, because it is being unloaded. The driver should manoeuvre around the unloaded truck to avoid collision while maintaining proper lane position."}
{"id": "train_04139", "split": "train", "clip_key": "2020-0226-140503_103029_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "103029"}, "frames": ["2020-0226-140503_103029_movie_t-3.jpg", "2020-0226-140503_103029_movie_t-2.jpg", "2020-0226-140503_103029_movie_t-1.jpg", "2020-0226-140503_103029_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction is divided by a low white rail and hedges; the pavement is dry and slightly worn, and traffic moves slowly. Ahead in the ego lane, a white truck slows, constraining the ego vehicle's pace. At the left curb, a red fire truck is stopped and partly intrudes into the lane, narrowing the passage. A scooter just ahead on the left passes the fire truck and rides toward the gap behind the truck, and may enter the ego lane. Oncoming cars travel to the right beyond the divider.", "hazard_reasoning": "There is a white truck slowing in the ego lane. It indicates the vehicle ahead is reducing speed, so the driver should slow down to maintain a safe following distance."}
{"id": "train_04140", "split": "train", "clip_key": "titan_clip_1232_000318_movie", "source": {"subset": "titan", "scenario": "clip_1232", "frame": "000318"}, "frames": ["titan_clip_1232_000318_movie_t-3.jpg", "titan_clip_1232_000318_movie_t-2.jpg", "titan_clip_1232_000318_movie_t-1.jpg", "titan_clip_1232_000318_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrian", "environment_perception": "A dense urban commercial street narrows to a two-way carriageway with green-painted edges, no median, and fair pavement; traffic is light as the ego car proceeds in the left lane. A pedestrian in a white shirt carrying a backpack crosses from left to right directly ahead, using the roadway because there is no sidewalk and briefly occupying the ego path. Another pedestrian walks along the right edge by storefronts in the same direction, close to the lane. Far ahead a small white vehicle continues uphill in the same direction without affecting flow. Shop signs and displays line both curbs and slightly constrict the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, and crossing the street from left to right, in front of the ego car, because there is no sidewalk. The driver should yield because the pedestrian is stepping directly into the vehicle's path without a designated crossing area, creating a collision risk."}
{"id": "train_04141", "split": "train", "clip_key": "titan_clip_1298_000378_movie", "source": {"subset": "titan", "scenario": "clip_1298", "frame": "000378"}, "frames": ["titan_clip_1298_000378_movie_t-3.jpg", "titan_clip_1298_000378_movie_t-2.jpg", "titan_clip_1298_000378_movie_t-1.jpg", "titan_clip_1298_000378_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cones.", "environment_perception": "An urban shopping street with a single forward lane and no median appears, the asphalt slightly worn and traffic light with no moving vehicles ahead. Along the left edge, road work is underway: several blue service trucks are parked and a crane is set up, and traffic cones block off the left side of the road, narrowing the usable lane. A pedestrian stands by a right-side storefront on the sidewalk and does not approach the carriageway. A bicycle is parked against the hedge on the right and remains clear of traffic. No prominent signals or speed signs are visible, and the work zone is the main constraint.", "hazard_reasoning": "There are traffic cones blocking off the left side of the road. The cones and crane arm partially obstruct the lane, so drivers should carefully manoeuvre around them to avoid collision."}
{"id": "train_04142", "split": "train", "clip_key": "2020-0225-102455_052937_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "052937"}, "frames": ["2020-0225-102455_052937_movie_t-3.jpg", "2020-0225-102455_052937_movie_t-2.jpg", "2020-0225-102455_052937_movie_t-1.jpg", "2020-0225-102455_052937_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban arterial passes under an elevated expressway with two same-direction lanes for the ego vehicle and a guardrail on the right separating a slower parallel roadway; the pavement is dry and traffic is moderate here but heavier on the adjacent road. A black hatchback slightly ahead in the left lane moves right into the ego lane to bypass the slow-moving vehicles ahead, briefly narrowing the space in front of the ego car. A white van directly ahead in the ego lane continues at a steady pace and effectively sets the speed. Farther ahead in the left lane, a red delivery truck rolls slowly amid queued cars. Parked vehicles line the left curb, and the right-side guardrail limits any merging from that side.", "hazard_reasoning": "There's a black hatchback, changing lane from the left lane to the ego lane, because of traffic congestion ahead. You should slow down to maintain safe distance and avoid collision when it merges."}
{"id": "train_04143", "split": "train", "clip_key": "titan_clip_10_000216_movie", "source": {"subset": "titan", "scenario": "clip_10", "frame": "000216"}, "frames": ["titan_clip_10_000216_movie_t-3.jpg", "titan_clip_10_000216_movie_t-2.jpg", "titan_clip_10_000216_movie_t-1.jpg", "titan_clip_10_000216_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian crossing ahead.", "environment_perception": "An urban shopping street with a single narrow lane and brick paving stretches ahead between tall buildings; traffic is light and the surface looks intact. A box truck is stopped ahead along the left curb, partly intruding into the lane and narrowing the passage. At the foreground crosswalk, a pedestrian carrying a backpack, wearing a white shirt and blue pants, steps from the right curb and crosses into the ego lane, directly in the vehicle's path. At the same time, two pedestrians from the left continue across toward the right, further occupying the lane. Farther ahead, people walk on both sidewalks without entering the roadway. A blue pedestrian crossing sign on the right highlights the crossing, and no traffic signals are visible.", "hazard_reasoning": "There is a pedestrian carrying a backpack, wearing a white shirt and blue pants, and crossing the street from the right side of the road, into the ego car lane. The driver must yield because the pedestrian is entering the vehicle's path and could be struck if no action is taken."}
{"id": "train_04144", "split": "train", "clip_key": "titan_clip_1222_000192_movie", "source": {"subset": "titan", "scenario": "clip_1222", "frame": "000192"}, "frames": ["titan_clip_1222_000192_movie_t-3.jpg", "titan_clip_1222_000192_movie_t-2.jpg", "titan_clip_1222_000192_movie_t-1.jpg", "titan_clip_1222_000192_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban commercial street with very limited or no sidewalks appears to be two-way without a marked median; the pavement is smooth with utility covers, and traffic is light with no vehicles ahead or oncoming. Ahead in the vehicle's lane, a group of pedestrians wearing white shirts and black pants stands and walks in the middle of the road because there is no sidewalk, occupying the lane and constraining the vehicle's pace. Farther ahead near a zebra crossing, a single pedestrian crosses left to right and may enter the vehicle's path.", "hazard_reasoning": "There is a group of pedestrians wearing black pants and white shirts, and standing in the middle of the road because there is no sidewalk. The driver should carefully manoeuvre to avoid colliding with them as they occupy the roadway."}
{"id": "train_04145", "split": "train", "clip_key": "2020-0207-151349_042442_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "042442"}, "frames": ["2020-0207-151349_042442_movie_t-3.jpg", "2020-0207-151349_042442_movie_t-2.jpg", "2020-0207-151349_042442_movie_t-1.jpg", "2020-0207-151349_042442_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An elevated urban road with a single same-direction lane is enclosed by concrete barriers and shaded by an overhead viaduct; the pavement is smooth and dry, and traffic is otherwise light. Ahead in the ego lane a silver sedan remains stopped because of congestion ahead, constraining the ego vehicle as it closes the gap. No other road users, signals, or hazards are apparent.", "hazard_reasoning": "There is a silver sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop promptly to avoid a collision with the halted vehicle ahead."}
{"id": "train_04146", "split": "train", "clip_key": "2020-0226-140503_012533_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "012533"}, "frames": ["2020-0226-140503_012533_movie_t-3.jpg", "2020-0226-140503_012533_movie_t-2.jpg", "2020-0226-140503_012533_movie_t-1.jpg", "2020-0226-140503_012533_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane per direction curves gently right, divided by double yellow lines on dry pavement, and traffic flow is light. A green van ahead in the ego lane drives away at a steady pace, effectively setting the ego car's speed. Farther ahead in the same lane, a small orange box truck continues smoothly, maintaining distance behind the van and remaining relevant as part of the traffic stream. On the right side of the oncoming lane, a white van is stopped at the curb and stays out of the travel lane. Buildings line both sides, with a guardrail and narrow sidewalk on the left, and no moving oncoming vehicles are visible during the scene.", "hazard_reasoning": "There is a green van driving in the ego lane away from the ego car. The van could slow or stop unexpectedly and partially blocks the view ahead, so the driver should be aware of its movements."}
{"id": "train_04147", "split": "train", "clip_key": "titan_clip_693_000288_movie", "source": {"subset": "titan", "scenario": "clip_693", "frame": "000288"}, "frames": ["titan_clip_693_000288_movie_t-3.jpg", "titan_clip_693_000288_movie_t-2.jpg", "titan_clip_693_000288_movie_t-1.jpg", "titan_clip_693_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around pedestrians carefully", "environment_perception": "A narrow urban two-way street with no center line and smooth asphalt runs between shops and offices, and traffic is very light as the ego vehicle proceeds straight. On the left near the curb ahead, two pedestrians-one wearing a black shirt and carrying a handbag and the other in a brown dress-stand close to the roadway and may step into the ego lane. Farther ahead along the same side, a small group of pedestrians walks beside the buildings, remaining out of the travel path. Orange cones and a roped barrier guard a right-side driveway entrance, and several parked motorcycles line the left storefront, slightly narrowing the margin.", "hazard_reasoning": "There are two pedestrians, one wearing a black shirt and carrying a handbag, and the other wearing a brown dress, standing on the left side of the road. They may step into the lane unexpectedly, so the driver should manoeuvre around them carefully."}
{"id": "train_04148", "split": "train", "clip_key": "titan_clip_160_000126_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_160_000126_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_160_000126_movie_t-3_augB1.jpg", "titan_clip_160_000126_movie_t-2_augB1.jpg", "titan_clip_160_000126_movie_t-1_augB1.jpg", "titan_clip_160_000126_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single undivided lane runs between shopfronts, the pavement smooth and the flow light with no visible vehicles. The ego car proceeds slowly as a pedestrian in a blue shirt carrying a handbag walks ahead from the left side toward the right and away from the vehicle, briefly occupying the lane and crossing its path. Another pedestrian ahead along the left edge walks in the same direction near storefronts, keeping partly in the lane and potentially constraining the ego vehicle's pace. Farther ahead, several pedestrians move about near the bright junction area, some stepping across the roadway in the distance and may enter the path. Numerous signboards and parked bicycles line both sides, narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing a blue shirt, and walking from the left side of the road, to the right side, and away from the ego car. The pedestrian is crossing the path of the ego-vehicle, so the driver should slow down to safely yield and avoid a collision."}
{"id": "train_04149", "split": "train", "clip_key": "titan_clip_1066_000126_movie", "source": {"subset": "titan", "scenario": "clip_1066", "frame": "000126"}, "frames": ["titan_clip_1066_000126_movie_t-3.jpg", "titan_clip_1066_000126_movie_t-2.jpg", "titan_clip_1066_000126_movie_t-1.jpg", "titan_clip_1066_000126_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban backstreet with a single narrow lane and no centerline rises gently and curves left between close buildings; the pavement is smooth and dry and there are no vehicles, so traffic is light. A man on the right sidewalk, close to the ego vehicle, walks toward the camera behind a white guardrail, remaining separated from the lane. Farther ahead on the same right sidewalk, several pedestrians move uphill behind the railing and stay off the roadway. The curve ahead forms a partial blind bend that limits view of any approaching traffic.", "hazard_reasoning": "No visible hazards are present and the road ahead is clear, so the driver can proceed safely."}
{"id": "train_04150", "split": "train", "clip_key": "titan_clip_100_000546_movie", "source": {"subset": "titan", "scenario": "clip_100", "frame": "000546"}, "frames": ["titan_clip_100_000546_movie_t-3.jpg", "titan_clip_100_000546_movie_t-2.jpg", "titan_clip_100_000546_movie_t-1.jpg", "titan_clip_100_000546_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the van.", "environment_perception": "A narrow urban street with a single undivided lane runs between shopfronts on brick paving, and traffic is light and slow. A gray van is stopped ahead in the ego lane, blocking the path and holding the ego vehicle. Farther ahead, a small white car continues away in the same direction beyond the van. On the right edge, a person pushes a flower cart along the curb, moving forward close to the lane and near the ego path. Parked delivery scooters and several cones along the left curb further constrict the roadway.", "hazard_reasoning": "There is a gray van stopped in the ego lane. The stopped van ahead creates an obstacle in your path, so you should carefully manoeuvre around it to avoid a collision."}
{"id": "train_04151", "split": "train", "clip_key": "2020-0226-140503_015810_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "015810"}, "frames": ["2020-0226-140503_015810_movie_t-3.jpg", "2020-0226-140503_015810_movie_t-2.jpg", "2020-0226-140503_015810_movie_t-1.jpg", "2020-0226-140503_015810_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "HIGH", "warning_content": "Be aware of the turning truck", "environment_perception": "An urban two-way street lined with mid-rise buildings has one lane each way divided by double white lines, with dry, slightly worn pavement and light traffic; the left lane is partially narrowed near the curb. A white Sagawa truck ahead in the left lane is turning left, occupying the lane and constraining the ego vehicle's path. An oncoming black car travels toward the camera in the opposite lane, passing the obstruction and influencing when the ego vehicle can pull around it. Parked vehicles along the right shoulder further tighten the roadway.", "hazard_reasoning": "There is a white truck in the left lane, turning left. Be aware of its turn as it may intrude into your lane, requiring you to adjust speed and maintain safe clearance."}
{"id": "train_04152", "split": "train", "clip_key": "2020-0203-114632_028751_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "028751"}, "frames": ["2020-0203-114632_028751_movie_t-3.jpg", "2020-0203-114632_028751_movie_t-2.jpg", "2020-0203-114632_028751_movie_t-1.jpg", "2020-0203-114632_028751_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of merging van ahead", "environment_perception": "An urban multi-lane arterial with smooth pavement carries moderate flow; the ego car travels in the left curbside bus-only lane, with flexible posts forming a narrow divider to the right. A black van ahead in the ego lane changes left into the adjacent lane in front of the ego car, temporarily narrowing the gap. A gray crossover already in that left lane continues straight just beside and ahead, shaping the van's merge space. Farther ahead a white sedan proceeds steadily in the through lane and becomes the new lead vehicle after the merge. Oncoming cars move in the lanes to the right without affecting the ego path.", "hazard_reasoning": "There is a black van changing lanes from the ego lane to the left lane, in front of the ego car. Be aware that the merging van may cut you off and require sudden braking."}
{"id": "train_04153", "split": "train", "clip_key": "2020-0206-142535_005891_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-142535_005891_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-142535_005891_movie_t-3_augB1.jpg", "2020-0206-142535_005891_movie_t-2_augB1.jpg", "2020-0206-142535_005891_movie_t-1_augB1.jpg", "2020-0206-142535_005891_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of bus cutting in", "environment_perception": "An urban two-way street with one narrow lane each way has smooth pavement and light traffic; no median is present and the view stays consistent. A small white box truck proceeds ahead in the ego lane at low speed, limiting the ego vehicle's pace. Oncoming in the right lane, a pink bus moves toward the center to pass a black van stopped at the curb, cutting into the ego lane as it maneuvers around the parked car. The black van is stationary along the oncoming curb close to the ego path, occupying that lane and causing the bus's incursion. Temporary barriers and cones line the left edge near the ego vehicle, slightly narrowing the lane.", "hazard_reasoning": "A pink bus in the right lane is cutting in to the ego lane, because it is maneuvering around a parked car. The bus's unexpected lane change may encroach on your path, requiring you to be cautious."}
{"id": "train_04154", "split": "train", "clip_key": "2020-0220-151845_033350_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "033350"}, "frames": ["2020-0220-151845_033350_movie_t-3.jpg", "2020-0220-151845_033350_movie_t-2.jpg", "2020-0220-151845_033350_movie_t-1.jpg", "2020-0220-151845_033350_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs under an elevated structure with two same-direction lanes and a curbside lane, no physical median, smooth pavement, and slow to moderate flow. A red truck ahead in the ego lane accelerates from low speed and briefly opens a gap, directly influencing the ego car's pace. To the right, a small flatbed truck in the adjacent lane creeps forward alongside and looks poised to merge left into the ego lane. Farther right, a white van near the curb remains nearly stationary, restricting space in that lane. On the left, a cyclist on the sidewalk by a crosswalk rides toward the corner and could enter from the side street.", "hazard_reasoning": "There is a red truck accelerating in the ego lane, in front of the ego car. Its acceleration can quickly change the following gap and obscure hazards ahead, so the driver should start moving to maintain a safe distance."}
{"id": "train_04155", "split": "train", "clip_key": "titan_clip_277_000594_movie", "source": {"subset": "titan", "scenario": "clip_277", "frame": "000594"}, "frames": ["titan_clip_277_000594_movie_t-3.jpg", "titan_clip_277_000594_movie_t-2.jpg", "titan_clip_277_000594_movie_t-1.jpg", "titan_clip_277_000594_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of construction work ahead", "environment_perception": "An urban two-way street with one narrow lane per direction and no median runs between tall buildings; the asphalt looks patchy with wet areas and traffic is light but slows near a work zone. On the left, construction work partly occupies the ego lane as a stopped dump truck with cones and barricades narrows the passage. Ahead in the same lane, a white van slows beside the work truck, queueing to pass and setting the pace. On the right side of the roadway, an oncoming car approaches and continues through the gap in its lane, further tightening the passing space. On the right sidewalk, a couple of pedestrians stand near a parking entrance without stepping into the road. Far ahead, a traffic signal shows red.", "hazard_reasoning": "There is construction work on the left side of the lane. The driver should be aware of the work zone and maintain safe distance to avoid colliding with cones or the parked truck."}
{"id": "train_04156", "split": "train", "clip_key": "2020-0212-102546_068424_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "068424"}, "frames": ["2020-0212-102546_068424_movie_t-3.jpg", "2020-0212-102546_068424_movie_t-2.jpg", "2020-0212-102546_068424_movie_t-1.jpg", "2020-0212-102546_068424_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with one lane in the ego direction, bordered by a raised hedge median on the right, has dry, well-marked pavement; traffic is moderate and bunching near a signalized intersection ahead. A gold sedan directly ahead in the ego lane comes to a stop because a short queue forms farther ahead, constraining the ego vehicle's pace. Another compact car farther ahead in the same lane slows within the queue behind a larger truck, keeping a short gap. Oncoming cars travel steadily on the far side of the median to the ego's right without interacting. Traffic signals are visible above the distant intersection.", "hazard_reasoning": "There is a gold sedan stopping in the ego lane, in front of the ego car, because of traffic congestion ahead. The ego-vehicle should stop to avoid a collision with the halted sedan."}
{"id": "train_04157", "split": "train", "clip_key": "2020-0203-114632_024171_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "024171"}, "frames": ["2020-0203-114632_024171_movie_t-3.jpg", "2020-0203-114632_024171_movie_t-2.jpg", "2020-0203-114632_024171_movie_t-1.jpg", "2020-0203-114632_024171_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial in Toshima City runs straight with same-direction lanes separated from oncoming traffic by a painted median; the pavement is smooth and traffic is moderate as the scene approaches a zebra?rosswalk intersection. A white box truck ahead in the ego lane slows toward the crosswalk, constraining the ego vehicle's pace. To the right, a white van in the right-turn lane also slows near the intersection, remaining alongside but outside the ego path. Several pedestrians stand on the sidewalks at the corners near the crosswalk without stepping into the road. Oncoming cars beyond the median flow steadily in the opposite direction. An overhead sign identifies Toshima City.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The driver should slow down because the truck's reduced speed may require extra stopping distance to avoid a rear-end collision."}
{"id": "train_04158", "split": "train", "clip_key": "2020-0131-135401_087585_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "087585"}, "frames": ["2020-0131-135401_087585_movie_t-3.jpg", "2020-0131-135401_087585_movie_t-2.jpg", "2020-0131-135401_087585_movie_t-1.jpg", "2020-0131-135401_087585_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs straight between mid-rise buildings, separated from oncoming lanes by a concrete-and-rail median; the pavement is dry and traffic is slow. A white van ahead in the ego lane slows because of traffic congestion ahead, holding the ego car to a reduced pace. In the adjacent left lane, a small flatbed truck slightly farther ahead also creeps along, matching the slowdown and limiting chances to pass. Beyond the median on the right, an oncoming silver car and other vehicles move past steadily, remaining segregated from the ego lane.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. This slowdown indicates a queue of vehicles and the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_04159", "split": "train", "clip_key": "2020-0226-101332_010931_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "010931"}, "frames": ["2020-0226-101332_010931_movie_t-3.jpg", "2020-0226-101332_010931_movie_t-2.jpg", "2020-0226-101332_010931_movie_t-1.jpg", "2020-0226-101332_010931_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the black sedan", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid yellow center line runs between shops and offices, the pavement dry and smooth, with light traffic as the ego continues in the left lane. A black sedan in the right lane approaches toward the ego car on the oncoming side, requiring ordinary passing clearance. Ahead on the right curb of the oncoming lane, a cyclist rides toward the camera close to the guardrail, remaining near the edge. On the left sidewalk, several pedestrians walk past a shelter behind railings and do not enter the roadway.", "hazard_reasoning": "There is a black sedan driving in the right lane, towards the ego car. The driver should be aware of this approaching sedan as it could change lanes or turn unexpectedly into your path, posing a collision risk."}
{"id": "train_04160", "split": "train", "clip_key": "titan_clip_708_000468_movie", "source": {"subset": "titan", "scenario": "clip_708", "frame": "000468"}, "frames": ["titan_clip_708_000468_movie_t-3.jpg", "titan_clip_708_000468_movie_t-2.jpg", "titan_clip_708_000468_movie_t-1.jpg", "titan_clip_708_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on road.", "environment_perception": "A narrow urban residential street with no centerline runs between closely spaced buildings, the pavement smooth and the traffic flow very light throughout. Parked cars and bicycles along the edges slightly narrow the passage. Ahead on the left side of the roadway, a man wearing a white T-shirt and brown shorts, carrying a backpack and an umbrella, walks away from the ego vehicle along the margin and stays close to the travel path. No other moving vehicles or pedestrians are evident in either direction. A yellow children crossing warning sign stands on the right, and a large green school-zone marking appears on the pavement.", "hazard_reasoning": "There is a man wearing a white t-shirt and brown shorts, carrying a backpack and an umbrella and walking on the left side of the road, away from the ego car. The pedestrian's position on the street could lead to an unexpected crossing or drift into the travel lane, so drivers should remain vigilant and ready to react."}
{"id": "train_04161", "split": "train", "clip_key": "2020-0203-154554_069907_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "069907"}, "frames": ["2020-0203-154554_069907_movie_t-3.jpg", "2020-0203-154554_069907_movie_t-2.jpg", "2020-0203-154554_069907_movie_t-1.jpg", "2020-0203-154554_069907_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two same-direction lanes is divided from opposing traffic by a wide hatched painted median; the pavement is dry and traffic is heavy and slow. A silver motorcycle is stopped directly ahead in the ego lane because congestion ahead has halted traffic, holding the ego car. In front of it, a red hatchback in the same lane remains stopped in the queue, setting the pace. To the left near the curb, a white mini-van crawls forward beside the ego lane and may merge into the ego path as gaps open. On the right beyond the painted buffer, several oncoming white vans move steadily in the opposite lanes.", "hazard_reasoning": "There is a silver motorcycle stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted motorcycle and slow traffic."}
{"id": "train_04162", "split": "train", "clip_key": "titan_clip_538_000516_movie", "source": {"subset": "titan", "scenario": "clip_538", "frame": "000516"}, "frames": ["titan_clip_538_000516_movie_t-3.jpg", "titan_clip_538_000516_movie_t-2.jpg", "titan_clip_538_000516_movie_t-1.jpg", "titan_clip_538_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian walking ahead", "environment_perception": "An urban back street is narrow and two-way with no marked centerline, bordered by green railings on the left and a tall wall on the right; the dry asphalt looks intact, and traffic is light with no same-direction or oncoming vehicles. Ahead on the left, a pedestrian wearing a white shirt and carrying a bag walks away within the railed shoulder, moving parallel to the ego car and staying outside the travel lane. No other road users or traffic controls are salient, and visibility down the straight corridor is clear.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a bag, walking on the left side of the road, away from the ego car. The pedestrian might step onto the road, so the driver should be aware of their presence."}
{"id": "train_04163", "split": "train", "clip_key": "titan_clip_534_000528_movie", "source": {"subset": "titan", "scenario": "clip_534", "frame": "000528"}, "frames": ["titan_clip_534_000528_movie_t-3.jpg", "titan_clip_534_000528_movie_t-2.jpg", "titan_clip_534_000528_movie_t-1.jpg", "titan_clip_534_000528_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of open door and pedestrian.", "environment_perception": "An urban street with two lanes in the same direction curves gently right, with wide hatched islands and smooth asphalt; traffic is light. On the near left, a white flatbed truck is parked in the left lane with its door open as a pedestrian gets into it, partially blocking the lane and narrowing the available space. Farther ahead near the center, a white mixer truck moves slowly along the curve, constraining the pace of vehicles behind. No oncoming traffic or traffic signals are visible, and buildings and trees line both sides without other obstacles.", "hazard_reasoning": "There is a white truck with an open door, parked in the left lane, because a pedestrian is getting into it. The open door and pedestrian boarding the truck create a potential obstruction and risk of sudden pedestrian movement, so the driver should be aware."}
{"id": "train_04164", "split": "train", "clip_key": "2020-0217-110854_023948_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "023948"}, "frames": ["2020-0217-110854_023948_movie_t-3.jpg", "2020-0217-110854_023948_movie_t-2.jpg", "2020-0217-110854_023948_movie_t-1.jpg", "2020-0217-110854_023948_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light", "environment_perception": "An urban arterial with multiple lanes and painted orange dividers runs between tall buildings, the pavement smooth; traffic is paused at an intersection under a red signal. Directly ahead in the ego lane, an orange airport limousine bus is stopped at the red light, holding the ego vehicle behind. To the left, a silver van in the adjacent lane is also stopped slightly ahead, limiting any chance to pass. On the right, a pedestrian by the crosswalk walks along the curb without entering the roadway. The overhead traffic lights remain red through the scene.", "hazard_reasoning": "There is a an orange bus stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid collision with the bus and comply with the red signal."}
{"id": "train_04165", "split": "train", "clip_key": "2020-0214-102601_026371_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0214-102601_026371_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0214-102601_026371_movie_t-3_augB1.jpg", "2020-0214-102601_026371_movie_t-2_augB1.jpg", "2020-0214-102601_026371_movie_t-1_augB1.jpg", "2020-0214-102601_026371_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban boulevard with multiple lanes in each direction and no physical median stretches ahead on smooth pavement, and traffic is heavy and slow with oncoming flow in the right-side lanes. Far ahead in the ego lane, a white box truck slows because of traffic congestion ahead, setting the pace for the lane. Just ahead to the right, a large coach bus in the adjacent lane creeps forward, keeping speeds low alongside the ego vehicle. Ahead to the left, a black sedan in the neighboring lane moves slowly in parallel, limiting room for a lane change. A roadside sign shows 40 km/h.", "hazard_reasoning": "There is a white truck slowing in the ego lane, away from the ego car, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a collision under heavy traffic conditions."}
{"id": "train_04166", "split": "train", "clip_key": "2020-0227-104226_012792_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "012792"}, "frames": ["2020-0227-104226_012792_movie_t-3.jpg", "2020-0227-104226_012792_movie_t-2.jpg", "2020-0227-104226_012792_movie_t-1.jpg", "2020-0227-104226_012792_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A dense urban boulevard with multiple same-direction lanes and a planted median approaches a wide signalized intersection; the pavement is smooth and traffic is light to moderate with steady flow. A silver hatchback ahead in the ego lane continues straight toward the crosswalk at modest speed, effectively setting our approach gap. In the adjacent right lane a white minivan moves toward the junction and eases off near the stop line, slightly constraining our progress. On the opposite side of the median, a gray van and several other oncoming vehicles travel toward us in their lanes without interacting with our path. A black taxi stands at the left curb in the foreground near the lane edge. Overhead traffic lights and a gantry sign with Japanese text span the road.", "hazard_reasoning": "The roadway is free of hazards such as pedestrians, debris, or sudden congestion, so the driver can continue without additional caution."}
{"id": "train_04167", "split": "train", "clip_key": "titan_clip_78_000198_movie", "source": {"subset": "titan", "scenario": "clip_78", "frame": "000198"}, "frames": ["titan_clip_78_000198_movie_t-3.jpg", "titan_clip_78_000198_movie_t-2.jpg", "titan_clip_78_000198_movie_t-1.jpg", "titan_clip_78_000198_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for crossing pedestrian ahead.", "environment_perception": "An urban two-lane, two-way street with no median and smooth pavement carries light traffic. A 30 km/h sign and a large 30 road marking are visible, and a long construction wall runs along the right sidewalk while bicycles are parked at the left curb. A white hatchback immediately ahead in the left-side ego lane continues straight and effectively sets the pace. Farther ahead in the same lane, a small white car also proceeds forward toward the distance. In the opposite lane on the right, a dark van approaches steadily while staying within its lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, crossing the street in the middle of the road, from the right side to the left side. The driver should slow down because the pedestrian could step into the vehicle's path unexpectedly."}
{"id": "train_04168", "split": "train", "clip_key": "2020-0210-101957_024180_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "024180"}, "frames": ["2020-0210-101957_024180_movie_t-3.jpg", "2020-0210-101957_024180_movie_t-2.jpg", "2020-0210-101957_024180_movie_t-1.jpg", "2020-0210-101957_024180_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two lanes in the ego direction runs between hedges and mid-rise buildings, the pavement smooth and traffic heavy in slow stop-and-go flow. A black motorcycle is stopped directly ahead in the ego lane because congestion blocks the way, holding the ego vehicle at a standstill. Farther ahead in the same lane, a light-colored van also waits in the queue, reinforcing the blockage. In the adjacent right lane, a silver flatbed truck creeps forward beside the ego vehicle, and a black taxi just right of the ego lane edges ahead slowly, reducing openings for a lane change. No unusual signs or hazards are apparent.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego car in the ego lane because of traffic congestion ahead. The driver should stop to avoid colliding with the halted motorcycle due to the congestion."}
{"id": "train_04169", "split": "train", "clip_key": "2020-0214-145407_008516_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "008516"}, "frames": ["2020-0214-145407_008516_movie_t-3.jpg", "2020-0214-145407_008516_movie_t-2.jpg", "2020-0214-145407_008516_movie_t-1.jpg", "2020-0214-145407_008516_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under elevated ramps, with three same-direction lanes and a right-side barrier; the pavement is dry and traffic flows at a steady moderate pace. Ahead in the ego lane, a white minivan drives away from the ego car, gradually increasing the gap and setting the ego vehicle's pace. In the right adjacent lane slightly ahead, a small boxy van continues straight at similar speed, occupying the space to the right of the ego vehicle. Very near on the right, a silver sedan travels alongside and then edges ahead in its lane, close to the ego car's front quarter.", "hazard_reasoning": "There is a white minivan driving away from the ego car, in the ego lane. By following the vehicle ahead, the driver can better anticipate any changes in speed or direction."}
{"id": "train_04170", "split": "train", "clip_key": "titan_clip_1100_000588_movie", "source": {"subset": "titan", "scenario": "clip_1100", "frame": "000588"}, "frames": ["titan_clip_1100_000588_movie_t-3.jpg", "titan_clip_1100_000588_movie_t-2.jpg", "titan_clip_1100_000588_movie_t-1.jpg", "titan_clip_1100_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban shopping street with a narrow two-way road and no median meets an intersection with a zebra crossing; the pavement is clean and vehicle traffic is light while pedestrian activity is heavy. Several pedestrians ahead traverse the crosswalk left to right and right to left directly across the ego lane, constraining progress. On the right side, a pedestrian wearing a pink shirt and shorts walks toward the ego car along the curb and approaches the crosswalk, likely to enter the lane. Farther ahead beyond the crossing, a small group continues straight along the street, moving away from the camera.", "hazard_reasoning": "There is a pedestrian wearing a pink shirt and shorts, walking along the right side of the road, toward the ego car. The driver should be aware because the pedestrian may enter the vehicle's path unexpectedly, requiring speed adjustment to avoid a collision."}
{"id": "train_04171", "split": "train", "clip_key": "titan_clip_847_000126_movie", "source": {"subset": "titan", "scenario": "clip_847", "frame": "000126"}, "frames": ["titan_clip_847_000126_movie_t-3.jpg", "titan_clip_847_000126_movie_t-2.jpg", "titan_clip_847_000126_movie_t-1.jpg", "titan_clip_847_000126_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "A narrow urban street climbs uphill, an unmarked two-way road with smooth pavement and light traffic. On the left edge near the camera, a pedestrian in a black shirt and white hat walks toward the car along the roadway because there is no sidewalk, edging close to the travel line. Farther ahead on the right, another pedestrian walks uphill near the buildings and stays out of the lane. Near the crest, an oncoming light truck moves downhill in its path, reducing usable width on the narrow carriageway. Orange bollards and tight curbs confine the lane, with no salient signals or signs visible.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and a white hat, and walking towards the ego car, on the left side of the road, because there is no sidewalk. The driver should be aware because the pedestrian might continue into the lane and cause a collision."}
{"id": "train_04172", "split": "train", "clip_key": "2020-0226-101332_035616_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-101332_035616_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-101332_035616_movie_t-3_augB1.jpg", "2020-0226-101332_035616_movie_t-2_augB1.jpg", "2020-0226-101332_035616_movie_t-1_augB1.jpg", "2020-0226-101332_035616_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-lane road runs under an elevated expressway, with a guardrail separating a parallel side lane on the right; the pavement is dry and traffic is heavy and slow. A black sedan directly ahead in the ego lane slows as a red sedan from the left lane moves over in front of it. A white van farther ahead in the same lane is stopped in the queue and keeps the line crawling. A large green truck in the far-left lane creeps forward alongside.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane, because a red sedan is lane changing in front of it. This lane change forces sudden deceleration of the following vehicle, increasing the risk of a rear-end collision without prompt action."}
{"id": "train_04173", "split": "train", "clip_key": "titan_clip_163_000078_movie", "source": {"subset": "titan", "scenario": "clip_163", "frame": "000078"}, "frames": ["titan_clip_163_000078_movie_t-3.jpg", "titan_clip_163_000078_movie_t-2.jpg", "titan_clip_163_000078_movie_t-1.jpg", "titan_clip_163_000078_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the parked vehicle", "environment_perception": "A narrow urban two-way street runs between tall buildings with smooth pavement and no median, and traffic is light as the ego vehicle continues straight. On the left of the ego, an oncoming black van approaches and passes closely, reducing lateral space. Ahead along the left curb, a white sedan is parked on the left side of the road, narrowing the lane the ego will pass. Farther ahead in the same direction, a small box truck occupies the lane and constrains the available path. A pedestrian stands on the right sidewalk near a pole, remaining clear of the roadway.", "hazard_reasoning": "There is a white sedan parked on the left side of the road. This parked vehicle could limit visibility of approaching traffic or pedestrians, so you should be cautious to avoid potential conflicts."}
{"id": "train_04174", "split": "train", "clip_key": "2020-0227-104226_077074_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "077074"}, "frames": ["2020-0227-104226_077074_movie_t-3.jpg", "2020-0227-104226_077074_movie_t-2.jpg", "2020-0227-104226_077074_movie_t-1.jpg", "2020-0227-104226_077074_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban two-way street with no median and smooth pavement comes into view, and traffic is light as the ego car approaches a signalized intersection. A black van directly ahead in the ego lane accelerates away from the intersection, increasing the gap and setting the ego car's pace. On the right at the corner, a cyclist moves slowly along the side street toward the main road and may enter the ego lane after the van passes. At the left-side corner by the blue building, a scooter is stopped facing the intersection, waiting to turn and not yet affecting the ego car. A parked white van along the left curb and utility poles close to the roadway narrow the scene but remain clear of the lane.", "hazard_reasoning": "There is a black van accelerating in front of the ego car. Because the van is accelerating despite the red light, it may proceed unpredictably; follow the vehicle ahead to stay aware of its movements."}
{"id": "train_04175", "split": "train", "clip_key": "2020-0131-135401_065021_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "065021"}, "frames": ["2020-0131-135401_065021_movie_t-3.jpg", "2020-0131-135401_065021_movie_t-2.jpg", "2020-0131-135401_065021_movie_t-1.jpg", "2020-0131-135401_065021_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban street runs beneath an elevated structure with good pavement; two same-direction lanes are separated by a solid yellow line, and traffic is heavy and mostly stopped. A white minivan directly ahead in the left ego lane is stopped and blocks the path, keeping the ego car queued. In the adjacent right lane ahead, a dark gray van creeps forward in the jam, slightly ahead of the minivan and limiting gaps to merge. Another silver van is alongside on the right, inching forward parallel to the ego and closing side space. White barricades line the left curb, narrowing the shoulder.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car. The stopped minivan blocks the lane and requires the driver to stop immediately to prevent a rear-end collision."}
{"id": "train_04176", "split": "train", "clip_key": "2020-0204-150838_033755_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "033755"}, "frames": ["2020-0204-150838_033755_movie_t-3.jpg", "2020-0204-150838_033755_movie_t-2.jpg", "2020-0204-150838_033755_movie_t-1.jpg", "2020-0204-150838_033755_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial between tall buildings has dry, smooth pavement and very heavy stop-and-go traffic. Directly ahead in the ego lane, a white van is stopped because congestion blocks the way forward. To the left, a black taxi alongside inches ahead in its lane, constraining any lateral movement. To the right, another white van in the adjacent lane creeps forward parallel to the ego vehicle, staying close. A blue straight-ahead direction sign hangs above the roadway.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of traffic congestion ahead. Stop is necessary to avoid a collision with the van and manage the slow-moving traffic safely."}
{"id": "train_04177", "split": "train", "clip_key": "2020-0226-140503_062180_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "062180"}, "frames": ["2020-0226-140503_062180_movie_t-3.jpg", "2020-0226-140503_062180_movie_t-2.jpg", "2020-0226-140503_062180_movie_t-1.jpg", "2020-0226-140503_062180_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Be aware of the motorcycle ahead.", "environment_perception": "An urban street with a single left-side traffic lane and no median runs between shops and offices; the stone-textured pavement is dry and traffic is light. Ahead, a white car in the ego lane slows at a zebra crossing, setting the pace. Farther ahead, a black motorcycle drives in the ego lane away from the ego car in the same direction. Pedestrians line both sidewalks near the crosswalk, some moving toward the curb and potentially entering the lane. A circular 20 speed limit sign is posted on the left.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane away from the ego car. Because the motorcycle is directly ahead in the same lane, it may slow down or maneuver unexpectedly, so the driver should maintain alertness and safe following distance."}
{"id": "train_04178", "split": "train", "clip_key": "titan_clip_1211_000024_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1211_000024_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1211_000024_movie_t-3_augB1.jpg", "titan_clip_1211_000024_movie_t-2_augB1.jpg", "titan_clip_1211_000024_movie_t-1_augB1.jpg", "titan_clip_1211_000024_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban commercial street with a single narrow shared lane and no median runs between tall buildings; the paver surface is clean and dry, and traffic is light. Two pedestrians ahead in the center of the lane walk away from the ego vehicle, one wearing a black dress and the other a yellow shirt with black pants, occupying the ego path. A white delivery mini-truck is stopped at the right curb, its rear protruding slightly into the lane and narrowing the passage. Additional pedestrians appear farther ahead near storefronts along both sides but stay to the edges. Orange cones line the right side near the curb.", "hazard_reasoning": "There are two pedestrians wearing a black dress, a yellow shirt, and black pants, and walking in front of the ego car, away from the ego car. These pedestrians are walking in front of the vehicle and may step further into its path, so the driver should manoeuvre carefully around them to avoid collision."}
{"id": "train_04179", "split": "train", "clip_key": "2020-0226-140503_014291_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "014291"}, "frames": ["2020-0226-140503_014291_movie_t-3.jpg", "2020-0226-140503_014291_movie_t-2.jpg", "2020-0226-140503_014291_movie_t-1.jpg", "2020-0226-140503_014291_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one lane each direction approaches a signalized intersection, the pavement dry and smooth and traffic light to moderate. A black minivan ahead in the ego lane rolls straight through the intersection at low speed, slightly left of center and setting the pace. On the left side of the intersection, a yellow taxi turns right across the crossroads into the oncoming traffic lane, briefly crossing ahead of the ego vehicle. Two cyclists travel along the left curb in the same direction near the crosswalk, continuing straight and remaining close to the ego lane. A pedestrian signal on the right displays red.", "hazard_reasoning": "There is a yellow taxi in front of the ego-car, on the left side of the intersection, that is making a right hand turn, into the oncoming traffic lane. The taxi's unexpected turn into the oncoming lane poses a collision risk, so the driver should stop immediately to avoid impact."}
{"id": "train_04180", "split": "train", "clip_key": "2020-0226-140503_027656_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "027656"}, "frames": ["2020-0226-140503_027656_movie_t-3.jpg", "2020-0226-140503_027656_movie_t-2.jpg", "2020-0226-140503_027656_movie_t-1.jpg", "2020-0226-140503_027656_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban intersection in a dense city setting features a two-way, one-lane-per-direction road with no median; the pavement is dry and traffic is moderate. Ahead, an oncoming white van in its left lane approaches the intersection signaling to turn left, potentially crossing the ego vehicle's path. At the left corner, several pedestrians wait at the curb near the crosswalk, close to the roadway. Beside them, a bicyclist slows and waits at the edge of the sidewalk, positioned to enter the crosswalk but yielding. Overhead traffic signals control the junction.", "hazard_reasoning": "There is a white van coming from the opposite side of the intersection in the left lane, signaling to turn left. You should slow down because the turning van may cross your path, requiring you to reduce speed to avoid a collision."}
{"id": "train_04181", "split": "train", "clip_key": "titan_clip_1070_000114_movie", "source": {"subset": "titan", "scenario": "clip_1070", "frame": "000114"}, "frames": ["titan_clip_1070_000114_movie_t-3.jpg", "titan_clip_1070_000114_movie_t-2.jpg", "titan_clip_1070_000114_movie_t-1.jpg", "titan_clip_1070_000114_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrians ahead", "environment_perception": "An urban residential scene shows a narrow two-way road with no median and smooth, dry pavement; traffic is very light with no moving vehicles. On the right edge ahead, two pedestrians, one wearing a white shirt and the other a gray shirt, walk toward the ego vehicle along the curb, close to the travel lane and potentially encroaching on it. No traffic signals are visible. A silver minivan is parked along the left curb near the ego, and trees with a hedge on the right further narrow the passage.", "hazard_reasoning": "There are two pedestrians wearing a white and a gray shirt, walking on the right side of the road, towards the ego vehicle. Driver should be cautious as they may step into the lane, risking a collision."}
{"id": "train_04182", "split": "train", "clip_key": "2020-0131-135401_021556_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "021556"}, "frames": ["2020-0131-135401_021556_movie_t-3.jpg", "2020-0131-135401_021556_movie_t-2.jpg", "2020-0131-135401_021556_movie_t-1.jpg", "2020-0131-135401_021556_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the merging truck.", "environment_perception": "An urban multilane road with a narrow left-bending slip lane runs beside a white guardrail and curb; pavement is smooth and traffic is light. Same-direction lanes continue on the right beyond the guardrail. A silver box truck ahead from the left lane merges into the ego lane and fills the path, constraining the ego vehicle's pace. A white truck in the adjacent lanes to the right proceeds straight with no sign of merging. A pedestrian walks ahead on the right behind the guardrail, remaining off the roadway. Yellow chevron boards with red arrows point left, highlighting the upcoming bend.", "hazard_reasoning": "There is a silver truck cutting in front of the ego car, from the left lane to the ego lane. The truck's sudden lane change reduces available space and requires the driver to adjust speed or steering, so the driver should yield to avoid a collision."}
{"id": "train_04183", "split": "train", "clip_key": "2020-0207-101955_118854_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_118854_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_118854_movie_t-3_augB1.jpg", "2020-0207-101955_118854_movie_t-2_augB1.jpg", "2020-0207-101955_118854_movie_t-1_augB1.jpg", "2020-0207-101955_118854_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane road runs beneath an elevated expressway, the pavement dry and smooth, and traffic grows heavy as a queue forms ahead. Directly ahead in the ego lane, a blue sedan slows because of congestion ahead, constraining the ego vehicle's pace. In the right adjacent lane, a white van and a white wagon wait in a slow queue, limiting room to merge. Farther ahead under the overpass, a large box truck with several cars bunches up and intermittently stops, creating the bottleneck for the lanes.", "hazard_reasoning": "There is a blue sedan slowing down in the ego lane, because of traffic congestion ahead. Drivers should slow down to maintain a safe following distance and adapt to the slowing traffic."}
{"id": "train_04184", "split": "train", "clip_key": "2020-0131-135401_069966_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-135401_069966_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-135401_069966_movie_t-3_augB1.jpg", "2020-0131-135401_069966_movie_t-2_augB1.jpg", "2020-0131-135401_069966_movie_t-1_augB1.jpg", "2020-0131-135401_069966_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction and opposing lanes to the right runs between mid-rise buildings; there is no physical median, the asphalt looks smooth, and traffic is heavy and slow. A black mid-size SUV directly ahead in the ego lane slows because congestion forms ahead, constraining the ego vehicle's pace. In the adjacent lane to the right, a box truck slightly farther ahead rolls slowly in the same queue, limiting forward visibility. A dark minivan is alongside on the right of the ego, edging a little ahead in its lane while continuing straight without signaling. Opposing traffic moves steadily beyond the center lines.", "hazard_reasoning": "There's a black mid-SUV slowing down in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision due to the sudden slowdown and traffic buildup."}
{"id": "train_04185", "split": "train", "clip_key": "2020-0228-102841_030549_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "030549"}, "frames": ["2020-0228-102841_030549_movie_t-3.jpg", "2020-0228-102841_030549_movie_t-2.jpg", "2020-0228-102841_030549_movie_t-1.jpg", "2020-0228-102841_030549_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene on a straight single-lane road with a sidewalk on the left and a guardrail on the right; the asphalt is clean and dry, and traffic is very light with no vehicles ahead or oncoming. A pedestrian on the left sidewalk walks away from the ego vehicle, remaining behind bollards and fencing and not entering the roadway. A large 40 speed limit marking appears on the pavement, and a matching circular 40 sign stands further ahead. Buildings line the left side and a red-painted strip borders the right, with no obstacles in the lane.", "hazard_reasoning": "No hazards detected as the road is clear of obstacles or moving hazards. Under current conditions, the driving environment is safe and requires no immediate warning."}
{"id": "train_04186", "split": "train", "clip_key": "2020-0131-135401_010525_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "010525"}, "frames": ["2020-0131-135401_010525_movie_t-3.jpg", "2020-0131-135401_010525_movie_t-2.jpg", "2020-0131-135401_010525_movie_t-1.jpg", "2020-0131-135401_010525_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with one lane each direction and a solid orange center line runs between close buildings, the pavement appears smooth and traffic is light. Directly ahead in the ego lane, a large white box truck is stopped, blocking the path and setting the ego car's pace. In the oncoming lane to the right, a small silver truck approaches slowly and proceeds past the stopped vehicle, keeping to its lane and preventing any immediate chance to overtake. Farther ahead near the right curb, a pedestrian walks along the sidewalk toward the intersection while staying off the roadway.", "hazard_reasoning": "There is a white truck stopped in front of the ego car. The halted truck blocks the lane ahead and the driver should stop to maintain a safe distance and avoid a collision."}
{"id": "train_04187", "split": "train", "clip_key": "titan_clip_610_000324_movie", "source": {"subset": "titan", "scenario": "clip_610", "frame": "000324"}, "frames": ["titan_clip_610_000324_movie_t-3.jpg", "titan_clip_610_000324_movie_t-2.jpg", "titan_clip_610_000324_movie_t-1.jpg", "titan_clip_610_000324_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian crossing", "environment_perception": "A narrow urban commercial street with brick paving and no marked lanes runs between shopfronts, with no divider and light traffic. The ego-vehicle proceeds straight at low speed along the center of the roadway. Ahead, a pedestrian in a white T-shirt crosses the street from left to right directly across the ego path, moving steadily and momentarily controlling the ego car's pace. Farther ahead near the right edge another pedestrian walks along the storefront and stays clear of the lane. Cones and a sidewalk sign sit by the left curb as minor roadside obstacles.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, crossing the street in front of the ego car, from the left side to the right side. The pedestrian is directly in the vehicle's path, so the driver should be aware and reduce speed to avoid a potential collision."}
{"id": "train_04188", "split": "train", "clip_key": "2020-0129-105040_038441_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "038441"}, "frames": ["2020-0129-105040_038441_movie_t-3.jpg", "2020-0129-105040_038441_movie_t-2.jpg", "2020-0129-105040_038441_movie_t-1.jpg", "2020-0129-105040_038441_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, with three same-direction lanes and a right-side guardrail; the pavement looks dry and smooth, and traffic remains light to moderate with steady flow. A white kei van ahead in the ego lane proceeds at a modest speed and effectively sets the ego vehicle's pace. In the lane to the right, a dark minivan cruises slightly faster and continues straight without merging. Farther ahead in the center lanes, a motorcycle accelerates away from the group and does not affect the ego vehicle. Blue overhead direction signs hang from the viaduct, and sidewalks with railings line the left side.", "hazard_reasoning": "No potential hazards are detected; the driver can continue driving safely under clear conditions."}
{"id": "train_04189", "split": "train", "clip_key": "2020-0205-103411_113732_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "113732"}, "frames": ["2020-0205-103411_113732_movie_t-3.jpg", "2020-0205-103411_113732_movie_t-2.jpg", "2020-0205-103411_113732_movie_t-1.jpg", "2020-0205-103411_113732_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane divided road runs through a commercial district, with a narrow median separating directions; the left-side carriageway has rough resurfaced pavement, visible patches and a pothole, plus cones and guardrails, and traffic is moderate. A small white kei-van ahead in the ego lane continues straight at a steady pace, effectively setting the ego vehicle's speed. On the opposite side of the median to the right, a silver sedan and a larger truck approach in the nearest oncoming lane and pass by. A white van at the far right edge remains stopped by the roadside near shops. No active traffic signals are evident.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04190", "split": "train", "clip_key": "2020-0204-150838_047455_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "047455"}, "frames": ["2020-0204-150838_047455_movie_t-3.jpg", "2020-0204-150838_047455_movie_t-2.jpg", "2020-0204-150838_047455_movie_t-1.jpg", "2020-0204-150838_047455_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with a right-side guardrail divider has intact, slightly wet pavement and heavy same-direction traffic queuing toward an intersection. A gray sedan directly ahead in the ego lane is stopped because the traffic light visible ahead is red, holding the ego vehicle in place. In the adjacent left lanes, a white box truck and several vans are also stopped or inching forward in the same queue, limiting opportunities to merge. Farther ahead in the ego lane, a large truck waits near the front of the line, effectively setting the pace once movement resumes. An overhead signal shows red, and a pedestrian overpass spans the road.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego-car, in the ego lane, because of a red traffic light ahead. The driver should stop to avoid a collision with the stationary vehicle at the red light."}
{"id": "train_04191", "split": "train", "clip_key": "2020-0204-103442_062141_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "062141"}, "frames": ["2020-0204-103442_062141_movie_t-3.jpg", "2020-0204-103442_062141_movie_t-2.jpg", "2020-0204-103442_062141_movie_t-1.jpg", "2020-0204-103442_062141_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban multi-lane arterial with two same-direction lanes and no median approaches a signalized intersection; the pavement looks dry and worn and traffic is moderate with steady oncoming flow. Ahead in the ego lane, a black sedan slows to make a left turn at the intersection, causing the ego-car to queue briefly. In the adjacent right lane slightly ahead, a white van proceeds straight through the junction, limiting any chance for the ego-car to pass. In the oncoming lanes, a van with a roof light bar and several cars travel through the intersection toward the camera but remain in their lanes. On the left sidewalk near the corner, a cyclist moves slowly along the crosswalk area and stays out of the roadway.", "hazard_reasoning": "There is a black sedan slowing down in front of the ego-car, in the ego lane, because it is making a left hand turn at the intersection. The driver should slow down to maintain a safe distance and avoid a potential rear-end collision given the sedan's deceleration."}
{"id": "train_04192", "split": "train", "clip_key": "titan_clip_89_000102_movie", "source": {"subset": "titan", "scenario": "clip_89", "frame": "000102"}, "frames": ["titan_clip_89_000102_movie_t-3.jpg", "titan_clip_89_000102_movie_t-2.jpg", "titan_clip_89_000102_movie_t-1.jpg", "titan_clip_89_000102_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of pedestrian ahead", "environment_perception": "An urban intersection with a two-lane road and no median comes into view, the pavement smooth and traffic light. A pedestrian wearing a white shirt and black pants walks along the left edge of the ego lane toward the camera, close to the curb and potentially encroaching on the lane. Farther ahead near the center crosswalk, another person walks across from left to right, moving into the path the ego vehicle would take if proceeding straight. On the right side of the intersection, a white minivan is stopped by the curb on the cross street and remains stationary without entering the lane. Blue pedestrian-crossing signs are visible near the corners, emphasizing the active crosswalks.", "hazard_reasoning": "A pedestrian wearing a white shirt and black pants is walking along the left side of the lane, toward the ego car. The driver should be aware of the pedestrian ahead to reduce speed and prevent an incident."}
{"id": "train_04193", "split": "train", "clip_key": "titan_clip_998_000204_movie", "source": {"subset": "titan", "scenario": "clip_998", "frame": "000204"}, "frames": ["titan_clip_998_000204_movie_t-3.jpg", "titan_clip_998_000204_movie_t-2.jpg", "titan_clip_998_000204_movie_t-1.jpg", "titan_clip_998_000204_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban street lined with mid-rise buildings has a narrow undivided roadway with smooth pavement and light traffic, and the ego vehicle proceeds straight. A cyclist rides along the right edge beside the ego near the curb, moving in the same direction in close proximity. A small white car ahead in the ego lane travels steadily away and sets the pace. A silver van is parked on the left side of the road, slightly narrowing the usable lane.", "hazard_reasoning": "There is a silver van parked on the left side of the road. The van narrows the lane and may obstruct the driving path, so the driver should carefully manoeuvre to safely pass."}
{"id": "train_04194", "split": "train", "clip_key": "2020-0129-144857_033250_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "033250"}, "frames": ["2020-0129-144857_033250_movie_t-3.jpg", "2020-0129-144857_033250_movie_t-2.jpg", "2020-0129-144857_033250_movie_t-1.jpg", "2020-0129-144857_033250_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban scene under an elevated structure shows the ego car in the right of two same-direction lanes bordered by a right-side guardrail on dry, smooth pavement, with slow, stop-and-go flow. A black van directly ahead in the ego lane slows and brakes because of congestion ahead. Farther ahead in the same lane, a white box truck crawls and is the foremost visible vehicle in the queue, constraining the pace. In the left adjacent lane, a large truck travels alongside and then edges forward, reducing available gaps and limiting any immediate lane change by the ego vehicle. No salient signals or unusual signage are visible.", "hazard_reasoning": "There is a black van slowing in front of the ego car, in the ego lane, due to traffic congestion ahead. The vehicle ahead is reducing speed because of congestion, so the driver should slow down to maintain a safe following distance."}
{"id": "train_04195", "split": "train", "clip_key": "2020-0129-105040_058004_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "058004"}, "frames": ["2020-0129-105040_058004_movie_t-3.jpg", "2020-0129-105040_058004_movie_t-2.jpg", "2020-0129-105040_058004_movie_t-1.jpg", "2020-0129-105040_058004_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the SUV", "environment_perception": "A narrow urban two-way street with one lane in each direction stretches ahead, bordered by a fence and buildings; the pavement has wet patches and two small speed humps, and green bollards create a separated shoulder on the left, with traffic light. Ahead on the left, a person moves away within the bollard-protected shoulder alongside the fence, remaining outside the travel lane. A blue SUV is approaching in the right lane from ahead. A triangular school-zone warning sign stands farther ahead.", "hazard_reasoning": "There is a blue SUV driving in the right lane towards the ego car. The approaching vehicle could encroach into the ego vehicle's lane or require evasive action, so the driver should manoeuvre carefully to avoid collision."}
{"id": "train_04196", "split": "train", "clip_key": "titan_clip_408_000210_movie", "source": {"subset": "titan", "scenario": "clip_408", "frame": "000210"}, "frames": ["titan_clip_408_000210_movie_t-3.jpg", "titan_clip_408_000210_movie_t-2.jpg", "titan_clip_408_000210_movie_t-1.jpg", "titan_clip_408_000210_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "A narrow urban shopping street with no marked center line and dry block paving runs between storefronts; traffic is light but the lane is constricted by stopped delivery vehicles. A white truck is stopped on the right in the ego lane to unload, its rear doors open as a worker stands on the liftgate with boxes and a blue handcart encroaching into the roadway, directly blocking the ego path. Farther ahead another truck is also stopped on the right in the same direction, further narrowing the usable lane and constraining progress. Pedestrians walk along both sidewalks near the shop fronts, remaining at the edges and not entering the roadway.", "hazard_reasoning": "There is a white truck stopped in the ego lane, because it is being unloaded, on the right side of the road. The stopped truck reduces the available lane width and visibility, so the driver should carefully manoeuvre around it to avoid collision or endangering pedestrians."}
{"id": "train_04197", "split": "train", "clip_key": "2020-0213-143552_004419_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "004419"}, "frames": ["2020-0213-143552_004419_movie_t-3.jpg", "2020-0213-143552_004419_movie_t-2.jpg", "2020-0213-143552_004419_movie_t-1.jpg", "2020-0213-143552_004419_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around it carefully", "environment_perception": "An urban multi-lane arterial has two lanes in each direction with no physical median; the pavement is dry and smooth, and traffic is light to moderate moving steadily. Ahead in the left curb lane, a black box truck is stopped with its rear door open as it is being unloaded, blocking the ego lane. In the adjacent right same-direction lane, several cars and vans travel past the truck at a steady pace, occupying the lane needed to pass. On the far side, oncoming vehicles flow toward the camera in their lanes without interruption. A painted bicycle lane runs along the left edge near storefronts.", "hazard_reasoning": "There is a black truck stopped on the left side of the road, in the ego lane in front of the ego car, because it is being unloaded. You need to manoeuvre around it carefully to avoid collision and maintain a safe path."}
{"id": "train_04198", "split": "train", "clip_key": "titan_clip_970_000558_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_970_000558_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_970_000558_movie_t-3_augB1.jpg", "titan_clip_970_000558_movie_t-2_augB1.jpg", "titan_clip_970_000558_movie_t-1_augB1.jpg", "titan_clip_970_000558_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway and green edge lanes runs between shops; the pavement is smooth and traffic is very light with no oncoming vehicles visible. Ahead in the center of the lane, a pedestrian in a white shirt and black pants walks away from the ego down the middle of the road, occupying the path. Near the left curb just ahead, a person with a bicycle waits by a storefront, close to the lane and may enter it. Farther ahead near the next block, several pedestrians gather near the road edges without entering the lane. On the right, orange cones and a sign mark a parking entrance, slightly narrowing the shoulder.", "hazard_reasoning": "There is a pedestrian in a white shirt and black pants, walking down the middle of the road away from the ego-car. The driver should carefully manoeuvre around the pedestrian to avoid a potential collision."}
{"id": "train_04199", "split": "train", "clip_key": "titan_clip_1268_000270_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1268_000270_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1268_000270_movie_t-3_augB1.jpg", "titan_clip_1268_000270_movie_t-2_augB1.jpg", "titan_clip_1268_000270_movie_t-1_augB1.jpg", "titan_clip_1268_000270_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist ahead", "environment_perception": "A narrow urban side street with closely spaced buildings forms an undivided two-way road with smooth pavement and light traffic, and no oncoming vehicles appear. A cyclist dressed in all black rides ahead near the center of the lane, moving away from the camera and constraining the ego vehicle's pace. Farther ahead on the right, a pedestrian walks away along the edge of the roadway near a driveway. A white box truck is parked on the right near cones and a signboard, narrowing the usable lane, while a car sits parked off the roadway on the left.", "hazard_reasoning": "There is a cyclist dressed in all black, cycling in the middle of the lane, away from the ego car. The cyclist's central position reduces available space and may require driver awareness to prevent a collision, so be aware of the cyclist ahead."}
{"id": "train_04200", "split": "train", "clip_key": "2020-0203-114632_022582_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "022582"}, "frames": ["2020-0203-114632_022582_movie_t-3.jpg", "2020-0203-114632_022582_movie_t-2.jpg", "2020-0203-114632_022582_movie_t-1.jpg", "2020-0203-114632_022582_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes and no physical median is shown, the pavement dry and in good condition, and traffic stays light throughout. A white semi-truck immediately ahead in the ego lane remains stopped, blocking the path and holding the ego vehicle in place.", "hazard_reasoning": "There is a white semi-truck stopped in front of the ego car, in the ego lane. The driver must stop to avoid colliding with the stationary truck ahead."}
{"id": "train_04201", "split": "train", "clip_key": "2020-0203-154554_054502_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "054502"}, "frames": ["2020-0203-154554_054502_movie_t-3.jpg", "2020-0203-154554_054502_movie_t-2.jpg", "2020-0203-154554_054502_movie_t-1.jpg", "2020-0203-154554_054502_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane same-direction road runs under an elevated expressway, with guardrails on the right and buildings and trees on the left; the pavement is dry and smooth and traffic is light. A white van ahead in the leftmost ego lane drives away at a steady pace, gradually widening the gap. Another white van slightly farther ahead in the center lane continues straight at similar speed and does not merge toward the ego lane. Bicycles are parked behind the left-side railing and do not intrude into the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04202", "split": "train", "clip_key": "titan_clip_1364_000270_movie", "source": {"subset": "titan", "scenario": "clip_1364", "frame": "000270"}, "frames": ["titan_clip_1364_000270_movie_t-3.jpg", "titan_clip_1364_000270_movie_t-2.jpg", "titan_clip_1364_000270_movie_t-1.jpg", "titan_clip_1364_000270_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential two-way road with one narrow lane each way and an orange centerline runs straight on smooth pavement; traffic is very light with no vehicles immediately nearby. No road users are in the ego lane or crossing ahead, so the path remains clear through the visible stretch. A 30 km/h speed limit sign and a prohibitory sign stand on the left beneath a convex safety mirror, and a small side street with a zebra crossing branches from the right. Utility poles, fences, and low bollards line the sidewalks, and there are no obstacles on the roadway.", "hazard_reasoning": "No hazards are detected; the driver can continue driving safely."}
{"id": "train_04203", "split": "train", "clip_key": "2020-0203-114632_000385_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "000385"}, "frames": ["2020-0203-114632_000385_movie_t-3.jpg", "2020-0203-114632_000385_movie_t-2.jpg", "2020-0203-114632_000385_movie_t-1.jpg", "2020-0203-114632_000385_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down to watch for merging vehicle", "environment_perception": "An urban signalized intersection on a two-way road with one lane per direction is approached, with cones forming a central divider; the pavement looks smooth and traffic is light. The signal ahead shows green for the ego vehicle. On the right front, a white microvan turns right from the side street and proceeds toward us in the opposing lane. Behind it, a light-blue taxi makes the same right turn into the opposing lane and continues forward. On the left side of the intersection, a black sedan waits to make a left turn into the ego lane, preparing to change direction and potentially entering our path. Pedestrians gather on the far sidewalks by the crosswalk but none step into the road.", "hazard_reasoning": "There is a black sedan on the left side of the intersection, waiting to make a left turn into the ego lane, because a change of direction is needed. Slow down to watch for its merging maneuver to avoid a collision."}
{"id": "train_04204", "split": "train", "clip_key": "2020-0220-102630_015562_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "015562"}, "frames": ["2020-0220-102630_015562_movie_t-3.jpg", "2020-0220-102630_015562_movie_t-2.jpg", "2020-0220-102630_015562_movie_t-1.jpg", "2020-0220-102630_015562_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban multi-lane road with no visible median curves gently right, the pavement dry and smooth as heavy traffic queues toward an intersection. A white sedan directly ahead in the ego lane is stopped for a red light, holding the ego vehicle in place. Alongside on the right, a light truck in the adjacent lane inches forward parallel to the ego, limiting lateral space. Farther ahead, several large box trucks wait across the lanes, obscuring the view of the junction and dictating a slow pace for the line.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid running the red light and colliding with the halted vehicle ahead."}
{"id": "train_04205", "split": "train", "clip_key": "2020-0131-135401_040708_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "040708"}, "frames": ["2020-0131-135401_040708_movie_t-3.jpg", "2020-0131-135401_040708_movie_t-2.jpg", "2020-0131-135401_040708_movie_t-1.jpg", "2020-0131-135401_040708_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-end collision.", "environment_perception": "An urban two-way street with two lanes in the ego direction, the rightmost marked for a right turn, runs between dense storefronts with no median and smooth pavement; traffic is heavy with a short queue at a signalized intersection ahead. A white hatchback stops directly ahead in the ego lane because of congestion, constraining the ego car's pace. A red mini truck just ahead to the right is also stopped in the adjacent right-turn lane, waiting at the queue and not entering the ego lane. A pedestrian on the left sidewalk walks past the crosswalk and remains off the roadway.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid rear-end collision under these congested conditions."}
{"id": "train_04206", "split": "train", "clip_key": "titan_clip_631_000174_movie", "source": {"subset": "titan", "scenario": "clip_631", "frame": "000174"}, "frames": ["titan_clip_631_000174_movie_t-3.jpg", "titan_clip_631_000174_movie_t-2.jpg", "titan_clip_631_000174_movie_t-1.jpg", "titan_clip_631_000174_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking ahead", "environment_perception": "An urban residential street appears with a narrow two-way carriageway and no centerline, bordered by buildings on the left and a fence on the right; a green-edged shoulder runs along the right and the pavement looks smooth. Traffic is very light with no vehicles visible. Ahead on the right, a pedestrian in a white shirt and blue pants walks toward the ego vehicle along the shoulder, approaching the travel lane. Farther ahead near the center, a small group of pedestrians walks along the street, staying to the sides and not entering the ego lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and blue pants, walking on the right side of the road, toward the ego car. The pedestrian may step into the driving lane unexpectedly, so the driver should be vigilant and reduce speed."}
{"id": "train_04207", "split": "train", "clip_key": "2020-0131-103016_074930_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "074930"}, "frames": ["2020-0131-103016_074930_movie_t-3.jpg", "2020-0131-103016_074930_movie_t-2.jpg", "2020-0131-103016_074930_movie_t-1.jpg", "2020-0131-103016_074930_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with at least three same-direction lanes runs between tall buildings; the pavement is dry and intact, and traffic is heavy in stop-and-go flow. Directly ahead in the ego lane, a white vehicle is stopped because congestion blocks the road, keeping the ego car halted. Slightly farther ahead to the right, a tall box truck is also stopped and obscures forward sightlines. On the left, a black taxi alongside inches ahead in parallel within its lane, constraining lateral space. In the right lane, a white delivery truck stands still beside the ego vehicle, further tightening the corridor. An overhead blue sign indicates multiple through lanes.", "hazard_reasoning": "There is a white mid-suv stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Stopping is necessary to prevent a collision with the halted vehicle in slow-moving traffic."}
{"id": "train_04208", "split": "train", "clip_key": "2020-0228-102841_051127_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "051127"}, "frames": ["2020-0228-102841_051127_movie_t-3.jpg", "2020-0228-102841_051127_movie_t-2.jpg", "2020-0228-102841_051127_movie_t-1.jpg", "2020-0228-102841_051127_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid colliding with the van ahead.", "environment_perception": "An urban multi-lane street with marked parking bays on both sides and dry, slightly worn pavement has heavy, slow traffic that remains mostly stopped. A white van is stopped immediately ahead in the ego lane because of congestion, holding the ego vehicle. In the adjacent right lane, a large box truck alongside creeps forward, leaving limited lateral space. Farther ahead in the right lane, a small pickup with a tarped load inches along with the queue. Parked cars line the left curb close to the ego vehicle, narrowing the corridor, and no salient signals or speed signs are visible.", "hazard_reasoning": "A white van is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid colliding with the stationary van ahead."}
{"id": "train_04209", "split": "train", "clip_key": "2020-0205-103411_055788_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "055788"}, "frames": ["2020-0205-103411_055788_movie_t-3.jpg", "2020-0205-103411_055788_movie_t-2.jpg", "2020-0205-103411_055788_movie_t-1.jpg", "2020-0205-103411_055788_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection on smooth pavement, with a guardrail median on the right; traffic is moderate and currently halted. A black van directly ahead in the ego lane is stopped for the red signal, holding the ego car in place. In the adjacent left lane, a dark station wagon is also stopped slightly behind the van, waiting at the light. The right-turn-only lane near the median appears clear, and some cross-street vehicles are visible beyond the intersection. The overhead traffic light facing the ego direction shows red.", "hazard_reasoning": "There is a black van stopped in front of the ego car because of a red traffic light. The driver should stop to avoid a collision with the halted van and comply with the traffic signal."}
{"id": "train_04210", "split": "train", "clip_key": "2020-0220-151845_054001_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "054001"}, "frames": ["2020-0220-151845_054001_movie_t-3.jpg", "2020-0220-151845_054001_movie_t-2.jpg", "2020-0220-151845_054001_movie_t-1.jpg", "2020-0220-151845_054001_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain a safe distance", "environment_perception": "An urban expressway segment with two same-direction lanes runs under an elevated structure, bounded by concrete side walls; the pavement is smooth and traffic is moderate with no oncoming flow. Directly ahead in the ego lane a red flatbed truck covered by a yellow tarp slows, and the ego car follows at its pace. In the adjacent right lane a white hatchback draws level and then continues ahead slightly faster, passing the truck. Farther ahead in the right lane a white van proceeds steadily in the same direction without affecting the ego lane.", "hazard_reasoning": "There is a red truck slowing in the ego lane, in front of the ego car. The truck's deceleration ahead requires the driver to slow down to maintain a safe distance and avoid a potential rear-end collision."}
{"id": "train_04211", "split": "train", "clip_key": "2020-0220-102630_102311_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "102311"}, "frames": ["2020-0220-102630_102311_movie_t-3.jpg", "2020-0220-102630_102311_movie_t-2.jpg", "2020-0220-102630_102311_movie_t-1.jpg", "2020-0220-102630_102311_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the stopped truck", "environment_perception": "An urban multilane arterial with two same-direction lanes approaches a signalized intersection, separated from oncoming traffic by a low curb median; the pavement is dry and the flow is moderate, bunching at the light. A white truck directly ahead in the ego lane is stopped at the crosswalk because the signal is red, holding the ego vehicle. In the adjacent left lane, a white van slows and stops slightly behind the truck while remaining in its lane. Farther ahead across the junction, oncoming vehicles pass through the intersection without affecting the ego path. Overhead traffic lights show red for our approach.", "hazard_reasoning": "There is a white truck stopped in the ego lane, because of a red traffic light. The driver should stop to avoid colliding with the halted vehicle."}
{"id": "train_04212", "split": "train", "clip_key": "2020-0217-110854_004193_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "004193"}, "frames": ["2020-0217-110854_004193_movie_t-3.jpg", "2020-0217-110854_004193_movie_t-2.jpg", "2020-0217-110854_004193_movie_t-1.jpg", "2020-0217-110854_004193_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with a single motor-vehicle lane, no visible median, and damp patched pavement carries slow traffic. Ahead in the ego lane, a white sedan slows because a white box truck farther up the street is also slowing and constraining the pace. The white box truck continues creeping forward, setting the flow for following vehicles. Pedestrians move along both sidewalks, including a person walking a bicycle on the right, but they stay off the roadway.", "hazard_reasoning": "There is a white sedan slowing down in the ego lane because of truck slowing ahead. The driver should slow down to maintain a safe following distance and avoid a potential collision due to sudden braking."}
{"id": "train_04213", "split": "train", "clip_key": "titan_clip_1233_000396_movie", "source": {"subset": "titan", "scenario": "clip_1233", "frame": "000396"}, "frames": ["titan_clip_1233_000396_movie_t-3.jpg", "titan_clip_1233_000396_movie_t-2.jpg", "titan_clip_1233_000396_movie_t-1.jpg", "titan_clip_1233_000396_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrians walking toward vehicle", "environment_perception": "A narrow urban commercial street with no centerline rises gently, the pavement is cracked, and traffic is light. On the near right edge, two pedestrians, one in a black shirt and one in a white shirt, walk toward the ego car along the green-marked margin, close to the lane. Farther ahead near the middle of the road, two other pedestrians continue up the street in the ego path, influencing the approach speed. A white van is parked partly out from a right-side driveway with cones, narrowing the passage.", "hazard_reasoning": "There are two pedestrians wearing a black shirt and a white shirt, walking on the left side of the road, toward the ego car. The driver should be aware of their approach to prevent unexpected crossing into the vehicle's path."}
{"id": "train_04214", "split": "train", "clip_key": "2020-0205-103411_063687_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "063687"}, "frames": ["2020-0205-103411_063687_movie_t-3.jpg", "2020-0205-103411_063687_movie_t-2.jpg", "2020-0205-103411_063687_movie_t-1.jpg", "2020-0205-103411_063687_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with three lanes in the ego direction separated from oncoming traffic by a low planted median; the pavement is smooth and overall flow is moderate but slows toward a signalized junction ahead. A silver hatchback directly ahead in the ego lane is stopped because of congestion, constraining the ego car's pace. In the adjacent right lane, a dark box truck ahead continues straight at low speed, moving past the queue while remaining in its lane. Ahead to the left, a small white van also slows with the traffic and holds its lane.", "hazard_reasoning": "A silver hatchback is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to prevent a collision with the halted vehicle ahead due to congestion."}
{"id": "train_04215", "split": "train", "clip_key": "2020-0131-135401_074389_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "074389"}, "frames": ["2020-0131-135401_074389_movie_t-3.jpg", "2020-0131-135401_074389_movie_t-2.jpg", "2020-0131-135401_074389_movie_t-1.jpg", "2020-0131-135401_074389_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth asphalt carries heavy, stop-and-go traffic, and vehicles begin to roll after a brief stop. A black hatchback directly ahead in the ego lane accelerates from the stop and leads the ego vehicle at low speed, setting the pace. A large white box truck slightly ahead to the left creeps forward in its lane, narrowing space and limiting the view ahead. A silver van to the right edges forward beside the ego vehicle, keeping close and potentially drifting toward the ego lane during the restart. An overhead lane-direction sign with arrows for through and turning movements is visible above the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04216", "split": "train", "clip_key": "titan_clip_617_000108_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_617_000108_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_617_000108_movie_t-3_augB1.jpg", "titan_clip_617_000108_movie_t-2_augB1.jpg", "titan_clip_617_000108_movie_t-1_augB1.jpg", "titan_clip_617_000108_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban side street with a single narrow lane and no median runs between shopfronts; pavement is smooth, and traffic is light with no motor vehicles moving. A pedestrian carrying a handbag walks toward the camera in the ego lane because there is no sidewalk, and she may occupy the vehicle's path. A cyclist ahead near the lane center travels away at low speed, likely constraining the pace. Another pedestrian stands at the right edge by a shuttered storefront and looks toward the road, close enough to step into the lane. Parked bicycles line the right curb and orange cones sit at a left-side entrance, narrowing usable space.", "hazard_reasoning": "There is a pedestrian carrying a handbag walking towards the ego car, in the ego lane, because there is no sidewalk. The driver should manoeuvre carefully around the pedestrian to avoid a collision under these conditions."}
{"id": "train_04217", "split": "train", "clip_key": "2020-0210-155354_041854_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "041854"}, "frames": ["2020-0210-155354_041854_movie_t-3.jpg", "2020-0210-155354_041854_movie_t-2.jpg", "2020-0210-155354_041854_movie_t-1.jpg", "2020-0210-155354_041854_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three lanes in each direction and no physical median approaches a wide intersection; the pavement is dry and smooth, and traffic is light. Ahead in the ego lane a small light-gray microvan slows toward the crosswalk, constraining the ego vehicle's pace. Slightly left in the adjacent lane, a motor scooter travels straight at a similar speed, remaining parallel to the ego path. On the right sidewalk, a couple of pedestrians wait near the corner without entering the roadway. Sparse oncoming vehicles are visible far ahead in the opposite lanes.", "hazard_reasoning": "There is a gray SUV slowing in the ego lane. The SUV's reduced speed ahead may require the driver to slow down to maintain a safe following distance."}
{"id": "train_04218", "split": "train", "clip_key": "titan_clip_39_000030_movie", "source": {"subset": "titan", "scenario": "clip_39", "frame": "000030"}, "frames": ["titan_clip_39_000030_movie_t-3.jpg", "titan_clip_39_000030_movie_t-2.jpg", "titan_clip_39_000030_movie_t-1.jpg", "titan_clip_39_000030_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for the pedestrian.", "environment_perception": "A narrow urban shopping street with a single shared lane and no median runs between tall buildings; the block-pattern pavement appears clean and dry, and no other moving vehicles are visible, so traffic is light. On the left side, a pedestrian in a black hooded sweater carrying a handbag walks away from the ego car along the curb, staying near the edge. Ahead in the center of the lane, several pedestrians proceed away down the street, occupying the lane and constraining the ego vehicle's pace. On the right near the curb, a man in a white shirt walks toward the camera beside storefronts, close to the travel lane and relevant to the path. Parked bicycles and shop displays line both curbs.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing a black hooded sweater, and walking on the left side of the road, away from the ego car. This pedestrian may step into the lane unexpectedly, so the driver should slow down to maintain safety."}
{"id": "train_04219", "split": "train", "clip_key": "titan_clip_887_000444_movie", "source": {"subset": "titan", "scenario": "clip_887", "frame": "000444"}, "frames": ["titan_clip_887_000444_movie_t-3.jpg", "titan_clip_887_000444_movie_t-2.jpg", "titan_clip_887_000444_movie_t-1.jpg", "titan_clip_887_000444_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a two-way two-lane layout has no median and smooth pavement; parked vehicles line both curbs and overall traffic appears light. A pedestrian on the right steps into the roadway and walks diagonally toward the left, entering the ego vehicle's path. On the left curb a black minivan is parked, and together with other parked cars it narrows the ego lane. Farther ahead on the right, a covered truck stands beside a line of orange cones, partially occupying space near the centerline and tightening the available corridor.", "hazard_reasoning": "There is a black minivan parked on the left side of the road. The parked minivan reduces lane width and visibility, so you should slow down to navigate safely near it."}
{"id": "train_04220", "split": "train", "clip_key": "titan_clip_124_000588_movie", "source": {"subset": "titan", "scenario": "clip_124", "frame": "000588"}, "frames": ["titan_clip_124_000588_movie_t-3.jpg", "titan_clip_124_000588_movie_t-2.jpg", "titan_clip_124_000588_movie_t-1.jpg", "titan_clip_124_000588_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A dense urban street with tall buildings borders a narrow two-way road, one lane each direction, without a median; the pavement is smooth and traffic is light with no vehicles ahead or oncoming. At a crosswalk directly ahead, a group of pedestrians walks left to right across the ego lane, occupying the path and dictating the pace. On the right curb, a man in a hat waits at the edge of the crosswalk and could enter after the group. Farther right, a woman holding a white umbrella begins to step off the curb toward the crosswalk and may enter the lane next.", "hazard_reasoning": "No hazards detected and the path is clear, so no warning is necessary."}
{"id": "train_04221", "split": "train", "clip_key": "titan_clip_225_000216_movie", "source": {"subset": "titan", "scenario": "clip_225", "frame": "000216"}, "frames": ["titan_clip_225_000216_movie_t-3.jpg", "titan_clip_225_000216_movie_t-2.jpg", "titan_clip_225_000216_movie_t-1.jpg", "titan_clip_225_000216_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane in each direction and no median approaches a small intersection; the pavement looks smooth and motor traffic is light. A pedestrian wearing a black T-shirt, carrying a handbag and an umbrella, crosses in front of the ego car from left to right, moving through the ego lane. Another pedestrian waits at the left edge of the crosswalk near the ego path and may enter. Far ahead in the same direction beyond the junction, a white box truck is stationary in the lane without immediate impact on the ego vehicle. Green cargo trikes and several bicycles are parked along both curbs near the intersection, narrowing the entry but staying outside the travel lane.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, carrying a handbag and umbrella, crossing the street in front of the ego car, from the left side to the right side. The pedestrian is crossing directly in front of the vehicle, so the driver should slow down to avoid a collision."}
{"id": "train_04222", "split": "train", "clip_key": "2020-0226-140503_085403_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "085403"}, "frames": ["2020-0226-140503_085403_movie_t-3.jpg", "2020-0226-140503_085403_movie_t-2.jpg", "2020-0226-140503_085403_movie_t-1.jpg", "2020-0226-140503_085403_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with painted dividers and no physical median has dry pavement and heavy traffic queued at a signalized intersection. A white hatchback directly ahead in the ego lane is stopped at the red light and holds the ego vehicle. A large cement mixer truck runs parallel on the left in the adjacent same-direction lane, also stopped and close to the ego car. Vehicles on the cross street move through the junction from right to left, including a dark van passing in front, which keeps the queue waiting while our signal stays red. A few pedestrians stand on the sidewalks near the corners.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver needs to stop to avoid a rear-end collision and obey the red signal."}
{"id": "train_04223", "split": "train", "clip_key": "2020-0207-101955_097118_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "097118"}, "frames": ["2020-0207-101955_097118_movie_t-3.jpg", "2020-0207-101955_097118_movie_t-2.jpg", "2020-0207-101955_097118_movie_t-1.jpg", "2020-0207-101955_097118_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway tunnel with two lanes in the same direction climbs and bends slightly left toward a bright exit; tiled walls, a right-side guardrail, and dry, smooth pavement are visible, and traffic is light. A dark hatchback ahead in the ego lane continues steadily toward the portal, setting the pace with a comfortable gap. Farther ahead, another car in the adjacent lane also heads toward the daylight and stays clear of the ego path. No oncoming traffic, merges, or work zones appear, and no signals or speed signs are clearly visible as tunnel lights transition to strong glare at the exit.", "hazard_reasoning": "The red traffic lights overhead require the driver to prepare to stop to comply with the signal and avoid running the red light."}
{"id": "train_04224", "split": "train", "clip_key": "titan_clip_15_000288_movie", "source": {"subset": "titan", "scenario": "clip_15", "frame": "000288"}, "frames": ["titan_clip_15_000288_movie_t-3.jpg", "titan_clip_15_000288_movie_t-2.jpg", "titan_clip_15_000288_movie_t-1.jpg", "titan_clip_15_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban commercial street with a single narrow lane on brick pavers has no median and very light, slow traffic amid pedestrians. Pavement looks intact and the flow remains cautious through the shared space. On the left side near the curb, a pedestrian wearing a striped shirt walks away from the ego car, keeping to the edge but close to the travel path. Ahead near the center of the lane, two pedestrians also walk away in the roadway, occupying the lane and constraining the vehicle's pace. Farther ahead in the same lane, a black van moves slowly past them, further limiting progress. A parked bicycle stands at the left curb.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt and walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre to maintain safe clearance in case the pedestrian moves unpredictably."}
{"id": "train_04225", "split": "train", "clip_key": "titan_clip_237_000036_movie", "source": {"subset": "titan", "scenario": "clip_237", "frame": "000036"}, "frames": ["titan_clip_237_000036_movie_t-3.jpg", "titan_clip_237_000036_movie_t-2.jpg", "titan_clip_237_000036_movie_t-1.jpg", "titan_clip_237_000036_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban side street with a narrow two-way carriageway and no median runs between tall buildings; the pavement is smooth and traffic is very light as the ego-vehicle proceeds straight. On the left edge nearby, a pedestrian in a white shirt walks toward the ego-car along the curb and may enter the ego lane. Far ahead near the middle of the road, another pedestrian crosses from right to left, temporarily occupying the path. No moving vehicles are visible in the same direction or oncoming. The right shoulder is lined with storefront displays and stacked crates, and several parked bicycles and a cone on the left reduce roadside clearance but stay outside the travel lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking, on the left side of the road, towards the ego-car. The pedestrian is approaching the vehicle's path, so the driver should slow down to avoid a potential collision."}
{"id": "train_04226", "split": "train", "clip_key": "2020-0203-114632_059679_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "059679"}, "frames": ["2020-0203-114632_059679_movie_t-3.jpg", "2020-0203-114632_059679_movie_t-2.jpg", "2020-0203-114632_059679_movie_t-1.jpg", "2020-0203-114632_059679_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction and two opposing lanes is divided by a painted median with flexible posts; the pavement is smooth and dry, and traffic is light and flowing. A white van ahead in the adjacent right lane proceeds straight at moderate speed and may influence a right merge. A motorcyclist farther ahead on the right continues straight in the same direction, keeping to the lane near the median. Oncoming vehicles, including a silver minivan, approach in their lanes on the far side of the posts without conflicting with the ego path. Pedestrians stand on the left sidewalk near a building entrance and do not enter the crosswalk. A 50 km/h speed-limit sign and overhead traffic signals are visible at the intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04227", "split": "train", "clip_key": "titan_clip_819_000180_movie", "source": {"subset": "titan", "scenario": "clip_819", "frame": "000180"}, "frames": ["titan_clip_819_000180_movie_t-3.jpg", "titan_clip_819_000180_movie_t-2.jpg", "titan_clip_819_000180_movie_t-1.jpg", "titan_clip_819_000180_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of the cyclist ahead", "environment_perception": "An urban two-way neighborhood street with a single narrow lane each direction has smooth asphalt with a drainage grate mid-lane and a few damp patches; traffic is very light and there are no cars. Ahead on the right, a cyclist wearing a white shirt rides toward the ego vehicle along the oncoming side, keeping near the curb while closing distance and likely to pass close to the center line. On the left edge near the camera, a pedestrian with a backpack and umbrella walks away in the same direction beside the lane, close to the travel path. A small side street opens from the left with no signals visible.", "hazard_reasoning": "There is a cyclist wearing a white shirt and cycling on the right side of the road towards the ego car. The cyclist may veer into the driving path, so stay alert."}
{"id": "train_04228", "split": "train", "clip_key": "titan_clip_883_000474_movie", "source": {"subset": "titan", "scenario": "clip_883", "frame": "000474"}, "frames": ["titan_clip_883_000474_movie_t-3.jpg", "titan_clip_883_000474_movie_t-2.jpg", "titan_clip_883_000474_movie_t-1.jpg", "titan_clip_883_000474_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban shopping street with a marked crosswalk and no median lies ahead, the asphalt looks clean and traffic is very light. A man crosses the crosswalk from right to left directly in front of the ego vehicle, so the vehicle yields. Farther ahead along the left curb, a delivery truck is parked and being loaded at its rear, occupying part of the lane and narrowing the passage. Several pedestrians stand on the left sidewalk near the storefronts and the truck, and a worker remains at the tailgate, none stepping into the lane. A roadside convex mirror and a caution sign are visible at the corner.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it being loaded. It partially obstructs the driver's view of the road ahead, so the driver should manoeuvre carefully around it."}
{"id": "train_04229", "split": "train", "clip_key": "2020-0220-102630_020084_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "020084"}, "frames": ["2020-0220-102630_020084_movie_t-3.jpg", "2020-0220-102630_020084_movie_t-2.jpg", "2020-0220-102630_020084_movie_t-1.jpg", "2020-0220-102630_020084_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes to the left of a low hedge median has smooth pavement and heavy, slow-moving traffic. Flow remains stop-and-go, with oncoming lanes on the right also dense. A white sedan directly ahead in the ego lane slows because of congestion and sets the ego car's pace. In the adjacent right lane, a blue hatchback slightly ahead creeps forward beside the ego vehicle, limiting immediate lane-change space. Farther ahead, a box truck and several delivery vans queue tightly, forming the visible bottleneck.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and reduce collision risk in congested traffic."}
{"id": "train_04230", "split": "train", "clip_key": "2020-0226-101332_064057_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "064057"}, "frames": ["2020-0226-101332_064057_movie_t-3.jpg", "2020-0226-101332_064057_movie_t-2.jpg", "2020-0226-101332_064057_movie_t-1.jpg", "2020-0226-101332_064057_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the gray van.", "environment_perception": "An urban two-way road with two same-direction lanes is shown, the wet pavement marked by a center yellow line and a right-side guardrail separating oncoming lanes; traffic is halted at the intersection. A gray van directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle. To the left, a white wagon in the adjacent lane slows and comes to a stop alongside. Slightly farther ahead in that lane, a dark car is already stationary near the line. The overhead signal facing this approach shows red.", "hazard_reasoning": "There is a gray van stoped in front of the ego car, in the ego lane, because of a red traffic light ahead. The van's sudden halt at the red signal presents a collision risk if the driver does not also stop promptly."}
{"id": "train_04231", "split": "train", "clip_key": "2020-0207-151349_081527_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "081527"}, "frames": ["2020-0207-151349_081527_movie_t-3.jpg", "2020-0207-151349_081527_movie_t-2.jpg", "2020-0207-151349_081527_movie_t-1.jpg", "2020-0207-151349_081527_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, bordered by a right-side guardrail; the pavement is dry with strong sun glare, and traffic is moderate and steady. A white box truck ahead in the ego lane drives away from the camera, maintaining speed and setting the pace while partly blocking the view. In the adjacent lane to the left, a black minivan slightly ahead travels straight at a similar speed alongside. Farther left near the curb, a green delivery van moves slowly by the buildings and stays outside the ego lane. Blue overhead direction signs are visible above the roadway.", "hazard_reasoning": "There is a white truck driving away from the ego car, in the ego lane. Because the truck is blocking your lane and limiting visibility, you should follow the vehicle ahead to maintain a safe and consistent path."}
{"id": "train_04232", "split": "train", "clip_key": "2020-0207-101955_039818_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "039818"}, "frames": ["2020-0207-101955_039818_movie_t-3.jpg", "2020-0207-101955_039818_movie_t-2.jpg", "2020-0207-101955_039818_movie_t-1.jpg", "2020-0207-101955_039818_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of merging motorcycle", "environment_perception": "An urban arterial with two lanes in the same direction runs under an elevated roadway; the pavement is dry and smooth and traffic is light. Ahead, a black motorcycle moves from the right lane into the ego lane directly in front of the car and continues ahead, briefly constraining the ego vehicle's pace. Farther ahead, a small truck stays in the right lane and climbs the ramp at a slower speed. A round 50 speed limit sign is posted on the pedestrian overpass, and overhead guide boards indicate the ramp. Fences line the right side and buildings the left, with no median or obstructions in the lane.", "hazard_reasoning": "There is a black motorcycle lane changing in front of the ego car, from the right lane to the ego lane. It may merge abruptly into your path, requiring you to stay alert to avoid a collision."}
{"id": "train_04233", "split": "train", "clip_key": "2020-0129-144857_059704_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "059704"}, "frames": ["2020-0129-144857_059704_movie_t-3.jpg", "2020-0129-144857_059704_movie_t-2.jpg", "2020-0129-144857_059704_movie_t-1.jpg", "2020-0129-144857_059704_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with two same-direction lanes is divided from oncoming traffic by a metal guardrail median; the asphalt looks smooth and traffic in the ego direction is light. A white box truck ahead in the left lane is stopped near the curb, occupying that lane and potentially affecting any lane change from the ego lane. Farther ahead in the ego lane, a passenger car continues at a steady pace and sets the flow. A silver van sits stationary on the far right beyond the median, parked and outside the ego path.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane. The driver should slow down to avoid colliding with the stationary van ahead."}
{"id": "train_04234", "split": "train", "clip_key": "titan_clip_1312_000036_movie", "source": {"subset": "titan", "scenario": "clip_1312", "frame": "000036"}, "frames": ["titan_clip_1312_000036_movie_t-3.jpg", "titan_clip_1312_000036_movie_t-2.jpg", "titan_clip_1312_000036_movie_t-1.jpg", "titan_clip_1312_000036_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban back street with shops forms a two-way road without a median or centerline; the pavement looks smooth and traffic is very light with no moving vehicles. On the left just ahead, a cyclist wearing a striped shirt stands with a bicycle by a utility pole, positioned partly in the ego lane and possibly entering the path. Far ahead near the middle of the roadway, a lone pedestrian walks away along the lane, which could constrain speed on approach. The oncoming side stays clear. Parked bicycles and rows of potted plants line both curbs, slightly encroaching on the usable lane.", "hazard_reasoning": "There is a cyclist wearing a striped shirt, standing on the left side of the road, in the ego lane. The cyclist blocks the vehicle's path and could lead to a collision, so the driver must carefully manoeuvre around them."}
{"id": "train_04235", "split": "train", "clip_key": "titan_clip_1138_000060_movie", "source": {"subset": "titan", "scenario": "clip_1138", "frame": "000060"}, "frames": ["titan_clip_1138_000060_movie_t-3.jpg", "titan_clip_1138_000060_movie_t-2.jpg", "titan_clip_1138_000060_movie_t-1.jpg", "titan_clip_1138_000060_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to crossing pedestrian", "environment_perception": "An urban side street with a single narrow lane runs between storefronts and parked vehicles; the pavement is smooth and traffic is very light with no moving cars ahead or oncoming. A silver van stands along the left curb partly intruding into the travel lane, narrowing clearance. On the left edge ahead, a pedestrian in a blue shirt walks toward the ego car close to the roadway, potentially entering the lane. Slightly farther ahead on the same side, another pedestrian pulls a suitcase while walking away along the lane edge, shaping the ego vehicle's path. Several pedestrians on the right sidewalk walk along the shops and remain clear of the road.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking toward the ego car, on the left side of the road. The pedestrian is entering the roadway and may cross in front of you, so you should yield to avoid collision."}
{"id": "train_04236", "split": "train", "clip_key": "2020-0228-102841_035909_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "035909"}, "frames": ["2020-0228-102841_035909_movie_t-3.jpg", "2020-0228-102841_035909_movie_t-2.jpg", "2020-0228-102841_035909_movie_t-1.jpg", "2020-0228-102841_035909_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A tree-lined urban divided road with two lanes in the ego direction has dry, well-kept pavement and moderate traffic that bunches up near an intersection. Ahead in the ego lane, a black mid-size SUV is stopped because the overhead traffic light is red, holding the ego vehicle. In the adjacent right lane, several cars are already stopped in a queue toward the intersection, limiting any lane change. Near the right foreground, a white crossover waits at the back of that line. No pedestrians or cyclists appear, and no work zones or other obstacles are visible.", "hazard_reasoning": "There is a black mid-SUV that has stopped in front of the ego car in the ego lane, because of red traffic lights. The driver should stop to avoid colliding with the halted vehicle at the red signal."}
{"id": "train_04237", "split": "train", "clip_key": "titan_clip_1164_000444_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1164_000444_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1164_000444_movie_t-3_augB1.jpg", "titan_clip_1164_000444_movie_t-2_augB1.jpg", "titan_clip_1164_000444_movie_t-1_augB1.jpg", "titan_clip_1164_000444_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with one lane each way and no median stretches ahead, the pavement smooth and traffic light. A large box truck is stopped ahead in the ego lane by the left curb as workers unload boxes onto a handcart that juts into the roadway, narrowing the available lane. A pedestrian wearing black pants and a gray shirt walks away along the left side of the road near the truck, parallel to traffic. Farther ahead, a small white car continues away down the street in the same direction. Other pedestrians remain on the sidewalks and parked vehicles line both sides, with no prominent signals visible.", "hazard_reasoning": "There is a pedestrian wearing black pants and a gray shirt, walking on the left side of the road, away from the ego car. The driver should slow down to maintain a safe distance and be prepared if the pedestrian steps into the roadway."}
{"id": "train_04238", "split": "train", "clip_key": "2020-0228-150133_064405_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "064405"}, "frames": ["2020-0228-150133_064405_movie_t-3.jpg", "2020-0228-150133_064405_movie_t-2.jpg", "2020-0228-150133_064405_movie_t-1.jpg", "2020-0228-150133_064405_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes per direction, divided by double solid white lines, runs straight on smooth pavement; traffic is moderate and compresses toward an elevated structure ahead while oncoming cars stream steadily on the far side. A black sedan directly ahead in the ego lane slows as congestion builds farther ahead, restricting the ego vehicle's pace. To the left, a light green kei car in the curb lane holds a steady speed alongside and continues straight without changing lanes. Farther ahead in the curb lane, a white box truck proceeds slowly behind other vehicles, adding to the queue.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced traffic speed."}
{"id": "train_04239", "split": "train", "clip_key": "2020-0131-103016_052334_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "052334"}, "frames": ["2020-0131-103016_052334_movie_t-3.jpg", "2020-0131-103016_052334_movie_t-2.jpg", "2020-0131-103016_052334_movie_t-1.jpg", "2020-0131-103016_052334_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with multiple lanes and a solid yellow divider has dry pavement and moderate traffic queued at a signal. A white truck directly ahead in the ego lane is stopped at the red light, holding the ego vehicle. To the right, a black van slightly ahead is stopped in its lane near the guardrail, waiting for the signal and not merging. On the left, a white car pulls up alongside in the adjacent lane, inching forward toward the intersection but constrained by the same red. The overhead traffic light shows red, and no pedestrians or cyclists are visible.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid colliding with the halted truck and to comply with the traffic signal."}
{"id": "train_04240", "split": "train", "clip_key": "2020-0217-110854_070651_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "070651"}, "frames": ["2020-0217-110854_070651_movie_t-3.jpg", "2020-0217-110854_070651_movie_t-2.jpg", "2020-0217-110854_070651_movie_t-1.jpg", "2020-0217-110854_070651_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction passes under a pedestrian footbridge; the asphalt looks dry and patchy, and traffic is light to moderate. A white truck ahead in the ego lane travels away from the camera at a steady pace. To its right, a silver minivan in the adjacent lane proceeds forward without changing lanes. A dark wagon is stopped at the far right curb near a building entrance, remaining outside the travel lanes. Across the guardrail median on the right, opposing traffic flows steadily with no interaction.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The parked truck on the right partially blocks the driver's view, so you should be aware of hidden hazards when passing."}
{"id": "train_04241", "split": "train", "clip_key": "2020-0227-104226_043199_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "043199"}, "frames": ["2020-0227-104226_043199_movie_t-3.jpg", "2020-0227-104226_043199_movie_t-2.jpg", "2020-0227-104226_043199_movie_t-1.jpg", "2020-0227-104226_043199_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction runs straight on smooth pavement, divided by a solid yellow centerline, and traffic is moderate. Ahead in the ego lane, a white hatchback slows because a small truck farther ahead in the same lane is also slowing. Farther ahead, the small truck continues decelerating and dictates the pace of following vehicles, including the hatchback and the ego car. Across the centerline to the right, oncoming vans and cars move steadily in their own lanes without affecting the ego path. Sidewalks with guardrails and midrise buildings line the street, and no salient signals or hazards appear.", "hazard_reasoning": "There is a white hatchback in front of the ego car which is slowing because of a truck slowing ahead in the ego lane. Slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_04242", "split": "train", "clip_key": "2020-0226-101332_003405_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "003405"}, "frames": ["2020-0226-101332_003405_movie_t-3.jpg", "2020-0226-101332_003405_movie_t-2.jpg", "2020-0226-101332_003405_movie_t-1.jpg", "2020-0226-101332_003405_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction curves gently right, bordered by guardrails and sidewalks; the pavement is dry and traffic is light. A gray van ahead in the ego lane drives away from the ego car, keeping a steady course and widening the gap. Farther ahead in the same direction, a small box truck continues steadily, loosely setting the pace. Pedestrians on the right sidewalk walk along the fence without approaching the roadway. An overhead sign shows a 40 speed limit, and the right-hand lane splits off to the right beyond the curve.", "hazard_reasoning": "There is a gray van driving in the ego lane away from the ego car. The van could slow down or change speed unexpectedly, so the driver should be aware of its movements."}
{"id": "train_04243", "split": "train", "clip_key": "titan_clip_1020_000330_movie", "source": {"subset": "titan", "scenario": "clip_1020", "frame": "000330"}, "frames": ["titan_clip_1020_000330_movie_t-3.jpg", "titan_clip_1020_000330_movie_t-2.jpg", "titan_clip_1020_000330_movie_t-1.jpg", "titan_clip_1020_000330_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking left side", "environment_perception": "An urban street beside a station approaches a narrow underpass, with a single lane in each direction and no median; the pavement looks smooth and traffic is light with no vehicles moving nearby. At the zebra crossing ahead, a pedestrian with a backpack walks rightward across the ego lane, directly in front of the vehicle and setting its pace. On the left side of the road, a pedestrian wearing a white coat walks away from the ego-car along the curb near the station entrance, remaining outside the lane. Storefronts line the right side, and the roadway narrows under the railway bridge ahead.", "hazard_reasoning": "There is a pedestrian wearing a white coat and walking on the left side of the road, away from the ego-car. The driver should be aware of pedestrians near the roadway as they may unexpectedly cross ahead."}
{"id": "train_04244", "split": "train", "clip_key": "titan_clip_130_000498_movie", "source": {"subset": "titan", "scenario": "clip_130", "frame": "000498"}, "frames": ["titan_clip_130_000498_movie_t-3.jpg", "titan_clip_130_000498_movie_t-2.jpg", "titan_clip_130_000498_movie_t-1.jpg", "titan_clip_130_000498_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street with a single vehicle lane and brick paving runs between tall buildings; there is no median and traffic is light, with the roadway locally narrowed by a parked box truck on the right. In the middle of the lane ahead, a pedestrian wearing white pants and a backpack walks toward the ego car to pass around the parked truck, moving directly along the vehicle's path. Slightly farther ahead, a person holding an umbrella walks away along the center of the lane, constraining the available pace. On the left, a man on the sidewalk heads toward the curb near a storefront and is close to the roadway, which could put him in the lane. The parked truck on the right occupies part of the lane and blocks sightlines to the adjacent sidewalk.", "hazard_reasoning": "There is a pedestrian wearing white pants and a backpack, walking in the middle of the road, toward the ego car, because he is walking around a parked truck. The driver should manoeuvre carefully to avoid a collision with this pedestrian who is emerging from behind the obstruction."}
{"id": "train_04245", "split": "train", "clip_key": "titan_clip_1082_000036_movie", "source": {"subset": "titan", "scenario": "clip_1082", "frame": "000036"}, "frames": ["titan_clip_1082_000036_movie_t-3.jpg", "titan_clip_1082_000036_movie_t-2.jpg", "titan_clip_1082_000036_movie_t-1.jpg", "titan_clip_1082_000036_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on the left side.", "environment_perception": "An urban commercial street with one lane each way and no median appears, the pavement smooth and traffic light while the oncoming side stays mostly clear. A white van ahead in the ego lane moves away toward the bend between buildings and slows slightly, setting the pace. On the left edge of the roadway, a pedestrian wearing black pants and carrying a handbag walks away from the ego car along the curb, close to the travel lane and potentially entering it. Farther ahead on the same side, two more pedestrians proceed in the same direction near the curb, remaining in the roadway and narrowing lateral space. At the right corner, a scooter rider waits beside the building near the curb, positioned to merge into the street.", "hazard_reasoning": "There is a pedestrian wearing black pants and a handbag walking on the left side of the road, away from the ego car. The pedestrian may enter the roadway soon, so the driver should remain aware to avoid potential conflict."}
{"id": "train_04246", "split": "train", "clip_key": "2020-0218-103119_034128_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "034128"}, "frames": ["2020-0218-103119_034128_movie_t-3.jpg", "2020-0218-103119_034128_movie_t-2.jpg", "2020-0218-103119_034128_movie_t-1.jpg", "2020-0218-103119_034128_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way multilane road without a median runs between mid-rise buildings, the pavement is dry and smooth, and traffic is moderate as the scene approaches a signalized intersection. A white truck ahead in the ego lane drives away toward the junction and effectively sets the ego vehicle's pace. A blue truck approaches in the nearest opposing lane to the right as oncoming traffic, continuing straight through the intersection. On the left curb a large work vehicle is parked with a worker standing beside it close to the travel lane. Overhead traffic lights for the ego direction show green.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. It is positioned directly ahead and could obscure the intersection when you proceed, so you should be aware of its movement and maintain a safe following distance."}
{"id": "train_04247", "split": "train", "clip_key": "2020-0210-155354_015301_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "015301"}, "frames": ["2020-0210-155354_015301_movie_t-3.jpg", "2020-0210-155354_015301_movie_t-2.jpg", "2020-0210-155354_015301_movie_t-1.jpg", "2020-0210-155354_015301_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane in each direction passes between mid-rise buildings; the pavement is dry and smooth, and traffic is moderate near a signalized intersection. A red mid-size SUV directly ahead in the ego lane accelerates away under a green light, opening its gap as it proceeds through the junction. An oncoming city bus to the right remains in its lane and continues straight past without affecting the ego path. Farther ahead, a small white car in the opposing flow approaches the intersection and slows among cross traffic. Overhead signals facing the camera show green for through movement.", "hazard_reasoning": "There is a red mid-suv accelerating in front of the ego car, away from the ego car, because of a green traffic light. The driver should start moving to keep pace with traffic flow and avoid unexpected delays."}
{"id": "train_04248", "split": "train", "clip_key": "titan_clip_502_000252_movie", "source": {"subset": "titan", "scenario": "clip_502", "frame": "000252"}, "frames": ["titan_clip_502_000252_movie_t-3.jpg", "titan_clip_502_000252_movie_t-2.jpg", "titan_clip_502_000252_movie_t-1.jpg", "titan_clip_502_000252_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with block-paved surface forms a single shared lane without a centerline, and traffic is light and slow. A small white delivery truck ahead in the lane moves away near the middle, setting the pace. On the right, a pedestrian wearing a blue shirt and gray pants and carrying a white grocery bag walks toward the ego vehicle, stepping into the lane to pass a parked white minivan and potentially encroaching on the path. Another pedestrian keeps to the left edge walking toward the camera along storefronts, remaining outside the lane. Farther ahead a few pedestrians continue along the right side. The parked white minivan on the right narrows the roadway.", "hazard_reasoning": "There is a male pedestrian wearing a blue shirt, gray pants, and carrying a white grocery bag, walking toward the ego car, on the right side of the road, because of the parked vehicle. The pedestrian's path brings him into the vehicle's travel lane, so the driver should slow down to avoid a potential collision."}
{"id": "train_04249", "split": "train", "clip_key": "titan_clip_74_000366_movie", "source": {"subset": "titan", "scenario": "clip_74", "frame": "000366"}, "frames": ["titan_clip_74_000366_movie_t-3.jpg", "titan_clip_74_000366_movie_t-2.jpg", "titan_clip_74_000366_movie_t-1.jpg", "titan_clip_74_000366_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of cyclist ahead", "environment_perception": "An urban narrow two-way street lined with tall buildings has smooth but tight pavement and no centerline, and traffic is light. On the left at very close range, a person carrying a tall panel steps out from a garage toward the roadside, briefly encroaching near the ego lane. Far ahead near the middle of the street, several pedestrians walk along and could move into the ego path, affecting pace. On the right side of the road, a cyclist in a pink shirt rides toward the ego vehicle, approaching as oncoming traffic and traveling close along the curb. A small car is parked along the left curb.", "hazard_reasoning": "There is a cyclist wearing a pink shirt and cycling on the right side of the road and towards the ego car. The cyclist's position and direction could require the driver to adjust speed or change lane to avoid a potential collision, so caution is needed."}
{"id": "train_04250", "split": "train", "clip_key": "2020-0129-144857_074883_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "074883"}, "frames": ["2020-0129-144857_074883_movie_t-3.jpg", "2020-0129-144857_074883_movie_t-2.jpg", "2020-0129-144857_074883_movie_t-1.jpg", "2020-0129-144857_074883_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two lanes in the ego direction runs beside a right-side guardrail median, the asphalt dry and in good condition as heavy, stop-and-go traffic develops. A white hatchback directly ahead in the ego lane is stopped because of congestion ahead, holding the ego car. In the adjacent left lane, a line of cars creeps forward and intermittently halts alongside, preventing easy merging. Farther ahead in the same queue, a white box truck and a blue truck move slowly and close gaps, reinforcing the slowdown. The opposite carriageway lies beyond the guardrail while shops and utility poles line the roadside under clear daylight.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. You should stop to maintain a safe distance and avoid a rear-end collision due to the slowed traffic."}
{"id": "train_04251", "split": "train", "clip_key": "2020-0203-154554_080124_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "080124"}, "frames": ["2020-0203-154554_080124_movie_t-3.jpg", "2020-0203-154554_080124_movie_t-2.jpg", "2020-0203-154554_080124_movie_t-1.jpg", "2020-0203-154554_080124_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with a painted centerline and dry pavement shows heavy, slow traffic under bright low sun and leafless roadside trees. A white sedan is stopped directly ahead in the ego lane because traffic is queued, holding the ego vehicle. A black sedan along the left curb ahead also remains stopped in the same direction as part of the line. Farther ahead, several vans and cars in the lane creep forward, continuing the congestion. A marked side lane with diagonal chevrons on the right tapers in, and no vehicles are merging from it.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of traffic congestion ahead. Therefore, the driver should stop to avoid a collision with the stationary vehicle in traffic congestion."}
{"id": "train_04252", "split": "train", "clip_key": "2020-0129-144857_016234_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "016234"}, "frames": ["2020-0129-144857_016234_movie_t-3.jpg", "2020-0129-144857_016234_movie_t-2.jpg", "2020-0129-144857_016234_movie_t-1.jpg", "2020-0129-144857_016234_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multi-lane arterial runs between high-rise buildings with smooth pavement and heavy, slow traffic. A black van directly ahead in the ego lane is stopped because of congestion, blocking the ego vehicle's path. Farther ahead in the same lane, a white coach bus inches forward, keeping the queue tight and limiting progress. In the adjacent left lane, a black SUV moves ahead slowly parallel to the ego lane as traffic creeps. A light-colored sedan farther left also advances slowly in the same direction within the queue.", "hazard_reasoning": "There is a black van stopped in front of the ego car, because of traffic congestion ahead. Driver should stop due to congestion ahead to avoid collision."}
{"id": "train_04253", "split": "train", "clip_key": "2020-0218-103119_055607_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "055607"}, "frames": ["2020-0218-103119_055607_movie_t-3.jpg", "2020-0218-103119_055607_movie_t-2.jpg", "2020-0218-103119_055607_movie_t-1.jpg", "2020-0218-103119_055607_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road runs beneath an elevated structure, the surface clean and dry, with near-standstill traffic. A silver truck is stopped directly ahead in the ego lane, fully blocking the path. To the right, another box truck waits slightly ahead in the adjacent lane beside the stopped vehicle, occupying the space next to the ego lane. No pedestrians, bicycles, or oncoming traffic are visible, and no salient signals or signs appear.", "hazard_reasoning": "There is a silver truck stopped in the ego lane. The driver must stop to avoid colliding with the stationary truck blocking the path ahead."}
{"id": "train_04254", "split": "train", "clip_key": "2020-0207-101955_074603_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "074603"}, "frames": ["2020-0207-101955_074603_movie_t-3.jpg", "2020-0207-101955_074603_movie_t-2.jpg", "2020-0207-101955_074603_movie_t-1.jpg", "2020-0207-101955_074603_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "The scene is an urban work-zone corridor with one narrow lane bounded by tall sound walls and continuous plastic barriers; the pavement is smooth and overall traffic is light, beginning to flow again. A blue flatbed truck is directly ahead in the ego lane and pulls away slowly as traffic ahead starts moving, controlling the ego vehicle's pace and gradually opening the gap. Farther ahead to the right, a white truck proceeds on an adjacent roadway beyond the barrier with no interaction. No signals or unusual signs are prominent, and the lane is clear of obstacles.", "hazard_reasoning": "There is a blue truck slowing away from the ego car in the ego lane because traffic ahead is starting to move. The driver should start moving promptly to follow the resuming traffic flow safely."}
{"id": "train_04255", "split": "train", "clip_key": "2020-0227-104226_097482_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "097482"}, "frames": ["2020-0227-104226_097482_movie_t-3.jpg", "2020-0227-104226_097482_movie_t-2.jpg", "2020-0227-104226_097482_movie_t-1.jpg", "2020-0227-104226_097482_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial arterial with two lanes in the ego direction shows smooth pavement and heavy, slow-moving traffic in bright daylight. Directly ahead in the ego lane, a red SUV slows to a crawl because of congestion, holding the ego vehicle's pace. In the adjacent right lane, a white van slightly ahead creeps forward in the same queue and remains parallel to the ego path. Farther ahead, a box truck in the right lane is nearly stopped, reinforcing the backup. Sidewalks with railings and storefronts line the road, and no oncoming traffic is visible.", "hazard_reasoning": "There is a red SUV slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to match the reduced traffic speed and maintain a safe following distance."}
{"id": "train_04256", "split": "train", "clip_key": "2020-0207-101955_018065_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_018065_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_018065_movie_t-3_augB1.jpg", "2020-0207-101955_018065_movie_t-2_augB1.jpg", "2020-0207-101955_018065_movie_t-1_augB1.jpg", "2020-0207-101955_018065_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial through midrise buildings has two same-direction lanes on the left of double center lines; the dry pavement looks worn and traffic is moderate. A white covered light truck directly ahead in the ego lane slows, so the ego vehicle follows its reduced pace. In the oncoming lanes to the right, a large flatbed truck approaches steadily, remaining across the center lines. A few roadside objects and bags sit behind guardrails along the left sidewalk, and no prominent signals or speed signs are visible.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car, in the ego lane. The truck's reduced speed may require you to slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_04257", "split": "train", "clip_key": "2020-0204-150838_079541_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "079541"}, "frames": ["2020-0204-150838_079541_movie_t-3.jpg", "2020-0204-150838_079541_movie_t-2.jpg", "2020-0204-150838_079541_movie_t-1.jpg", "2020-0204-150838_079541_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway ramp with a single lane and guardrails runs under an elevated structure, the pavement smooth and traffic light as the road curves gently left. A white box truck ahead in the same lane drives steadily away from the ego car, setting the pace. Farther ahead in the lane, a motorcyclist rides straight along the curve and remains in the ego path at a greater distance. On the left beyond the barrier, several pedestrians walk along a separated sidewalk and pose no interaction. No oncoming traffic or traffic signals are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04258", "split": "train", "clip_key": "2020-0217-110854_014838_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "014838"}, "frames": ["2020-0217-110854_014838_movie_t-3.jpg", "2020-0217-110854_014838_movie_t-2.jpg", "2020-0217-110854_014838_movie_t-1.jpg", "2020-0217-110854_014838_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with a fenced sidewalk and mid-rise buildings has dry, well-kept pavement and heavy same-direction traffic queued at an intersection. The gray van directly ahead in the left ego lane is stopped with brake lights because the traffic light ahead shows red, holding the ego vehicle in place. In the adjacent right lane, a small white van slightly ahead creeps forward alongside the queue, limiting opportunities to merge. Farther ahead in the right lane, another white minivan waits in line near the junction. Overhead signals display red, and roadside prohibition signs on the left indicate parking and stopping restrictions.", "hazard_reasoning": "There is a gray van stopped in the ego lane, because of the red traffic lights. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_04259", "split": "train", "clip_key": "titan_clip_266_000576_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_266_000576_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_266_000576_movie_t-3_augB1.jpg", "titan_clip_266_000576_movie_t-2_augB1.jpg", "titan_clip_266_000576_movie_t-1_augB1.jpg", "titan_clip_266_000576_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban back street with a narrow two-way roadway and no centerline has dry, slightly worn pavement and very light traffic as the ego car proceeds on the left. Ahead in the middle of the road, a pedestrian wearing black pants, a white shirt, and a backpack walks away from the vehicle, occupying the travel path and constraining the pace. On the right curb, several vans are stopped with rear doors open while people stand and load beside them, narrowing the usable lane. No oncoming vehicles are visible. Orange cones, a scooter, and parked bicycles line the edges as minor roadside obstacles.", "hazard_reasoning": "There is a pedestrian wearing black pants, a white shirt, and carrying a backpack, walking in the middle of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a collision and maintain safe distancing."}
{"id": "train_04260", "split": "train", "clip_key": "2020-0205-152530_018905_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "018905"}, "frames": ["2020-0205-152530_018905_movie_t-3.jpg", "2020-0205-152530_018905_movie_t-2.jpg", "2020-0205-152530_018905_movie_t-1.jpg", "2020-0205-152530_018905_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of merging van", "environment_perception": "An urban divided boulevard with two same-direction lanes runs straight on dry pavement, with a treed median on the right separating oncoming traffic; overall flow is light. Ahead-left, a gray van merges right into the ego lane, cutting in to maneuver around a white van that is parked at the left curb and blocks the left lane. Farther ahead in the ego lane, a small silver car travels steadily. Oncoming cars move beyond the median to the right. An overhead blue sign shows 300 m.", "hazard_reasoning": "There is a gray van cutting into the ego lane from the left lane, because it is maneuvering around a vehicle parked on the left side of the road. Driver should be aware of the merging van to anticipate its path and avoid a collision."}
{"id": "train_04261", "split": "train", "clip_key": "titan_clip_608_000162_movie", "source": {"subset": "titan", "scenario": "clip_608", "frame": "000162"}, "frames": ["titan_clip_608_000162_movie_t-3.jpg", "titan_clip_608_000162_movie_t-2.jpg", "titan_clip_608_000162_movie_t-1.jpg", "titan_clip_608_000162_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial street with stone-paved surface and no marked centerline runs ahead, the single undivided lane carrying light traffic. On the left side of the road, a pedestrian wearing a white shirt and black pants walks toward the ego along the sidewalk by the shopfronts, close to the curb. Ahead near the right edge, a cyclist rides away in the ego lane near the gutter, occupying the path. Farther ahead on the right, a white van is stopped at the curb with another truck beyond it, narrowing the roadway. A no-parking sign is posted on the left.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking toward the ego on the left side of the road. The driver should manoeuvre carefully around the pedestrian to avoid a potential collision."}
{"id": "train_04262", "split": "train", "clip_key": "titan_clip_762_000288_movie", "source": {"subset": "titan", "scenario": "clip_762", "frame": "000288"}, "frames": ["titan_clip_762_000288_movie_t-3.jpg", "titan_clip_762_000288_movie_t-2.jpg", "titan_clip_762_000288_movie_t-1.jpg", "titan_clip_762_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial alley with a single narrow lane and no divider has smooth pavement, light vehicle flow, and heavy pedestrian activity. The ego-vehicle moves slowly past storefronts as cones line the right edge and several bicycles are parked along the left shoulder. On the left, a pedestrian in a white-and-gray shirt carrying a handbag walks toward the ego-car along the lane because a parked bicycle blocks the shoulder, and may enter the vehicle's path. Ahead near the center, a person holding an umbrella walks toward the ego-vehicle in the middle of the lane, directly constraining the pace. Farther ahead, groups of pedestrians cross the lane between the shops, intermittently occupying the path.", "hazard_reasoning": "There is a pedestrian wearing a white-and-gray shirt, carrying a handbag, and walking on the left side of the road, towards the ego-car, because of a parked bicycle on the left shoulder. The driver should manoeuvre carefully because the pedestrian is forced closer to the driving lane to avoid the parked bicycle, creating a collision risk."}
{"id": "train_04263", "split": "train", "clip_key": "2020-0207-101955_107312_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "107312"}, "frames": ["2020-0207-101955_107312_movie_t-3.jpg", "2020-0207-101955_107312_movie_t-2.jpg", "2020-0207-101955_107312_movie_t-1.jpg", "2020-0207-101955_107312_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with several same-direction lanes on smooth asphalt; traffic is heavy and mostly stop-and-go. Directly ahead in the ego lane, a blue sedan is stopped in a queue, halted by a red traffic light at the intersection, and it constrains the ego vehicle's movement. In the lane to the left, a small green-covered flatbed truck waits slightly ahead and inches forward with the jam, staying adjacent to the ego path. Farther ahead, tall box trucks sit in the middle lanes and contribute to the backup. On the right, a red hatchback and a white van creep forward alongside at the same slow pace.", "hazard_reasoning": "There is a blue sedan stopped in the ego lane because of red traffic light ahead at the intersection. You must stop behind the sedan to avoid a collision at the red light."}
{"id": "train_04264", "split": "train", "clip_key": "2020-0210-155354_024552_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "024552"}, "frames": ["2020-0210-155354_024552_movie_t-3.jpg", "2020-0210-155354_024552_movie_t-2.jpg", "2020-0210-155354_024552_movie_t-1.jpg", "2020-0210-155354_024552_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with two lanes per direction and a low planted median runs past mid-rise buildings; the pavement is clear and traffic is moderate but bunches near the signalized crosswalk. A black minivan directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle at the approach. Oncoming traffic to the right, including a small truck and several white cars, continues straight through their lanes without interacting with the ego lane. The overhead signal facing the ego direction shows green above the intersection.", "hazard_reasoning": "There is a black minivan stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid colliding with the halted vehicle."}
{"id": "train_04265", "split": "train", "clip_key": "titan_clip_606_000186_movie", "source": {"subset": "titan", "scenario": "clip_606", "frame": "000186"}, "frames": ["titan_clip_606_000186_movie_t-3.jpg", "titan_clip_606_000186_movie_t-2.jpg", "titan_clip_606_000186_movie_t-1.jpg", "titan_clip_606_000186_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "In a dense urban shopping area, the ego-vehicle proceeds along a narrow two-way road without a centerline, with smooth pavement and light same-direction traffic moving slowly while the oncoming side stays mostly open. Ahead to the left, a pedestrian wearing a white shirt and carrying a handbag crosses toward the right where no marked crosswalk is present, potentially entering the ego lane. Immediately in front, a white van in the ego lane rolls slowly and then pauses near the crosser, constraining the ego vehicle's pace. Farther ahead along the left curb, additional white vans are stopped and narrow the passage. On the right, a person stands by a storefront near the curb but remains off the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and carrying a handbag, at the left side of the road, crossing the street from the left side of the road to the right side, because there is no pedestrian crosswalk. The pedestrian may enter the vehicle's path unexpectedly, so the driver should slow down to avoid collision."}
{"id": "train_04266", "split": "train", "clip_key": "2020-0205-152530_017858_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "017858"}, "frames": ["2020-0205-152530_017858_movie_t-3.jpg", "2020-0205-152530_017858_movie_t-2.jpg", "2020-0205-152530_017858_movie_t-1.jpg", "2020-0205-152530_017858_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection with smooth asphalt and painted channelization lies ahead as the road curves left, and overall traffic is light. The overhead signal for the ego approach shows red. A group of pedestrians ahead crosses from right to left in the marked crosswalk in front of the ego-car, one of them waving, occupying the lane while the light holds them priority. A few cars on the cross street to the left wait at their stop line and remain stationary, not entering the ego path. A lone pedestrian on the right sidewalk continues along the curb without stepping into the roadway. Flexible red-and-white bollards mark the channelized island near the corner.", "hazard_reasoning": "There is a group of pedestrians, one of them waving, crossing the street from right to left in a crosswalk in front of the ego-car, because of the red traffic light. The driver should stop to yield to pedestrians who have the right of way at the crosswalk."}
{"id": "train_04267", "split": "train", "clip_key": "2020-0203-154554_008902_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "008902"}, "frames": ["2020-0203-154554_008902_movie_t-3.jpg", "2020-0203-154554_008902_movie_t-2.jpg", "2020-0203-154554_008902_movie_t-1.jpg", "2020-0203-154554_008902_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrians at crosswalk", "environment_perception": "An urban multi-lane intersection with dry pavement and no median lies ahead as the ego-vehicle approaches on a left-hand roadway; traffic is moderate in both directions under an overhead signal. On the right at the near crosswalk, two pedestrians look at a cell phone and wait to cross at the curb, close to the ego lane. Ahead near the center, an oncoming motorcycle rides through the intersection toward the ego-vehicle in its lane. Farther ahead beyond the junction, several same-direction cars form a slow-moving line that sets the pace.", "hazard_reasoning": "There are two pedestrians looking into a cell phone and waiting to cross, at the crosswalk, on the right side of the street. The driver should yield because distracted pedestrians may step into the roadway unexpectedly."}
{"id": "train_04268", "split": "train", "clip_key": "2020-0206-101736_054658_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "054658"}, "frames": ["2020-0206-101736_054658_movie_t-3.jpg", "2020-0206-101736_054658_movie_t-2.jpg", "2020-0206-101736_054658_movie_t-1.jpg", "2020-0206-101736_054658_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial with smooth pavement and a guardrail dividing directions carries heavy, slow traffic near a signalized intersection ahead. The ego car proceeds in the left lane, where the flow is mostly stopped. Immediately ahead in the ego lane, a white minivan is stationary with brake lights on because of congestion, holding the ego car in place. To the left, a silver van in the neighboring lane creeps forward through the queue but stays in its lane and does not merge. On the opposite carriageway to the right, several cars move toward the camera behind the barrier and remain separated. Overhead traffic lights and signs span the junction ahead.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid a collision with the halted vehicle ahead."}
{"id": "train_04269", "split": "train", "clip_key": "2020-0213-143552_038139_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "038139"}, "frames": ["2020-0213-143552_038139_movie_t-3.jpg", "2020-0213-143552_038139_movie_t-2.jpg", "2020-0213-143552_038139_movie_t-1.jpg", "2020-0213-143552_038139_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban scene unfolds under an elevated roadway on a smooth two-lane same-direction road with a curbed tree median on the left and a fence to the right; overall traffic is light but movement in the ego lane is halted. A white box truck directly ahead in the ego lane is stopped, constraining the ego vehicle's progress. A white van is stationary at the left curb slightly ahead, parked outside the travel lane and not impeding traffic. A pedestrian walks along the left sidewalk near the trees, remaining behind the curb and not interacting with the roadway.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane. The truck blocks the lane ahead, creating a risk of collision if the driver does not stop promptly."}
{"id": "train_04270", "split": "train", "clip_key": "titan_clip_378_000018_movie", "source": {"subset": "titan", "scenario": "clip_378", "frame": "000018"}, "frames": ["titan_clip_378_000018_movie_t-3.jpg", "titan_clip_378_000018_movie_t-2.jpg", "titan_clip_378_000018_movie_t-1.jpg", "titan_clip_378_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with paving-stone surface and no marked lanes or median appears as a narrow shared space, with light vehicle presence and heavy pedestrian activity; the pavement is good and movement is slow. On the right side ahead, a pedestrian wearing white pants and a white shirt walks toward the ego car along the roadway because there is no sidewalk, and he may drift into the travel path. Farther ahead through the center and left, multiple pedestrians walk and occasionally cross between storefronts, constraining the available space and governing the pace. At the near right edge, another person lingers beside a shop entrance at the curb, close to the lane but not moving. Parked bicycles, shop signs, cones, and a bollard line the edges and slightly narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing white pants and a white shirt, walking on the right side of the road toward the ego car because there is no sidewalk. The driver should carefully manoeuvre around the pedestrian to avoid a collision due to the lack of a sidewalk."}
{"id": "train_04271", "split": "train", "clip_key": "2020-0131-135401_065958_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "065958"}, "frames": ["2020-0131-135401_065958_movie_t-3.jpg", "2020-0131-135401_065958_movie_t-2.jpg", "2020-0131-135401_065958_movie_t-1.jpg", "2020-0131-135401_065958_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs beneath an elevated structure, with at least two lanes in the ego direction marked by clear lane lines; the pavement is smooth and traffic is heavy but beginning to inch forward. A white van directly ahead in the ego lane starts to roll and gradually accelerates as the queue opens, setting the ego vehicle's pace. A silver minivan slightly ahead in the adjacent right lane moves slowly in parallel, maintaining its lane beside the ego. Another white van close to the near right also creeps forward in the same direction. Temporary barricades line the left curb, narrowing the shoulder.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04272", "split": "train", "clip_key": "2020-0218-151547_000013_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "000013"}, "frames": ["2020-0218-151547_000013_movie_t-3.jpg", "2020-0218-151547_000013_movie_t-2.jpg", "2020-0218-151547_000013_movie_t-1.jpg", "2020-0218-151547_000013_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban arterial with three same-direction lanes runs straight between tall buildings; the pavement is clean and traffic is heavy but halted at a signalized intersection. A silver hatchback is stopped directly ahead in the ego lane at the crosswalk, holding the ego vehicle. To the left, a dark sedan is stopped slightly ahead in the adjacent lane, occupying that lane and limiting any lane change. To the right, a silver wagon is stopped at the crosswalk in the outer lane as part of the queue. Pedestrians cluster on the left sidewalk near the crossing, waiting to cross.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car. The driver needs to stop to prevent a collision with the stationary vehicle ahead."}
{"id": "train_04273", "split": "train", "clip_key": "titan_clip_450_000372_movie", "source": {"subset": "titan", "scenario": "clip_450", "frame": "000372"}, "frames": ["titan_clip_450_000372_movie_t-3.jpg", "titan_clip_450_000372_movie_t-2.jpg", "titan_clip_450_000372_movie_t-1.jpg", "titan_clip_450_000372_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the handcart", "environment_perception": "An urban side-street intersection on a narrow two-way road without a median shows smooth pavement and light traffic. Ahead at the right corner, a man in a blue shirt and black pants pushes a handcart stacked with cardboard boxes from the left, crossing in front of the ego vehicle to get around a white mini-van parked on the roadside and briefly occupying the ego lane. The mini-van remains stopped at the curb near the intersection, narrowing the path. No other moving vehicles or oncoming traffic are visible, and a flat piece of cardboard lies on the roadway ahead.", "hazard_reasoning": "There is a man in a blue shirt and black pants, walking from the left side of the street and pushing a handcart of cardboard boxes in front of the ego-car because of the parked van on the roadside. The driver should carefully manoeuvre around the handcart to avoid a collision."}
{"id": "train_04274", "split": "train", "clip_key": "2020-0203-154554_001395_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "001395"}, "frames": ["2020-0203-154554_001395_movie_t-3.jpg", "2020-0203-154554_001395_movie_t-2.jpg", "2020-0203-154554_001395_movie_t-1.jpg", "2020-0203-154554_001395_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection with smooth pavement and no median lies ahead, and traffic in our direction is halted while cross-street flow is moderate. A black sedan taxi waits directly ahead in the ego lane at the stop line because the light is red, holding the ego vehicle. A large group of pedestrians crosses the crosswalk in front of the sedan from right to left, continuing to occupy the ego path. Several vehicles on the cross street, including a white van, proceed through the junction from right to left without entering our lane. The overhead signal facing our approach shows red.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of a red traffic light. The driver needs to stop to avoid colliding with the halted vehicle at the red light."}
{"id": "train_04275", "split": "train", "clip_key": "2020-0127-132751_038248_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "038248"}, "frames": ["2020-0127-132751_038248_movie_t-3.jpg", "2020-0127-132751_038248_movie_t-2.jpg", "2020-0127-132751_038248_movie_t-1.jpg", "2020-0127-132751_038248_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban depressed roadway with two same-direction lanes runs between high green retaining walls, the pavement smooth and dry, and traffic is light as the road approaches an underpass. The ego vehicle follows a black SUV directly ahead in the left lane moving steadily toward the bridge, constraining the pace. Farther ahead in the same lane, a white car continues at similar speed. To the right, a small flatbed truck travels in a segregated side lane parallel to the ego lane, where the markings indicate the lane converges near the underpass and the truck may enter ahead. Overhead green guide signs are visible above the carriageway, and a striped buffer separates the side lane from the main lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04276", "split": "train", "clip_key": "2020-0207-151349_019202_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "019202"}, "frames": ["2020-0207-151349_019202_movie_t-3.jpg", "2020-0207-151349_019202_movie_t-2.jpg", "2020-0207-151349_019202_movie_t-1.jpg", "2020-0207-151349_019202_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between large buildings, the pavement smooth and dry, and traffic heavy and slow with no oncoming traffic visible. Ahead in the ego lane, a silver truck slows because of congestion ahead and effectively sets the ego vehicle's pace. In the adjacent left lane slightly ahead, a white van creeps forward parallel to the ego vehicle and could hinder a leftward lane change. In the right lane ahead, a large coach bus and several cars queue near the curb and move slowly, keeping that lane backed up. Sun glare from the left and a pedestrian overpass span the roadway, while pedestrians remain behind railings on the sidewalk.", "hazard_reasoning": "There is a silver truck slowing in the ego lane, because of traffic congestion ahead. The driver should slow down to avoid approaching too quickly and maintain a safe following distance."}
{"id": "train_04277", "split": "train", "clip_key": "2020-0220-102630_106948_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "106948"}, "frames": ["2020-0220-102630_106948_movie_t-3.jpg", "2020-0220-102630_106948_movie_t-2.jpg", "2020-0220-102630_106948_movie_t-1.jpg", "2020-0220-102630_106948_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban two-lane road with a solid center line and a hatched divider on the right is shown, the pavement is smooth, and traffic is light with little change. A silver box truck is directly ahead in the ego lane and is stopped, holding the ego vehicle in place. On the right sidewalk, a couple of pedestrians walk and wait near a side street but remain off the roadway. A bicyclist on the right sidewalk moves slowly parallel to the traffic. The oncoming lane to the right of the center line has no vehicles passing, and no traffic signal is clearly visible.", "hazard_reasoning": "A silver truck is stopped in front of the ego car in the ego lane, because the light is red. The driver must stop immediately to comply with the red signal and avoid a collision with the stationary truck."}
{"id": "train_04278", "split": "train", "clip_key": "titan_clip_153_000516_movie", "source": {"subset": "titan", "scenario": "clip_153", "frame": "000516"}, "frames": ["titan_clip_153_000516_movie_t-3.jpg", "titan_clip_153_000516_movie_t-2.jpg", "titan_clip_153_000516_movie_t-1.jpg", "titan_clip_153_000516_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban side street with a single narrow lane and no median runs between tall buildings; the stone-paved surface is intact and traffic is light. Ahead on the left, a white truck is parked for loading with workers at its open rear and cones around it, and it intrudes into the lane, constraining the ego vehicle's path. On the right near the curb, a pedestrian stands by a storefront close to the roadway, near the ego's line of travel. In the near left foreground, a small trolley or cart sits partly in the roadway at the curb, forming a fixed obstacle to pass. Bicycles are parked along the right curb.", "hazard_reasoning": "There is a white truck parked on the left side of the road because it is being loaded. The parked truck blocks the driver's line of sight and may conceal pedestrians or cyclists, so the driver needs to navigate around it carefully."}
{"id": "train_04279", "split": "train", "clip_key": "2020-0210-101957_066939_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "066939"}, "frames": ["2020-0210-101957_066939_movie_t-3.jpg", "2020-0210-101957_066939_movie_t-2.jpg", "2020-0210-101957_066939_movie_t-1.jpg", "2020-0210-101957_066939_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban road with two same-direction lanes and a left curb lined by shrubs shows clean pavement and heavy, stop-and-go flow. A small white truck directly ahead in the ego lane is stopped, holding the ego vehicle because of congestion. In the adjacent right lane, a dark sedan waits alongside, constraining any lane change. Farther ahead in the right lane, a white car queues slowly without entering the ego lane. An overhead blue guide sign indicates a left turn at an upcoming T-junction.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion. The white truck is stopped due to congestion in your lane, so you should stop to avoid a rear-end collision."}
{"id": "train_04280", "split": "train", "clip_key": "2020-0210-142719_002070_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "002070"}, "frames": ["2020-0210-142719_002070_movie_t-3.jpg", "2020-0210-142719_002070_movie_t-2.jpg", "2020-0210-142719_002070_movie_t-1.jpg", "2020-0210-142719_002070_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be cautious of cyclist ahead", "environment_perception": "An urban commercial street with shops lines both sides; it is a two-way road with one lane per direction, no median, and dry, smooth pavement, and traffic is moderate. Ahead in the ego lane, a cyclist wearing a black jacket rides away near the middle of the roadway, occupying the lane and likely constraining the pace. In the oncoming lane to the right, a white minivan approaches at a steady speed and continues through. A dark SUV ahead near the left curb in the same direction moves slowly or waits, narrowing the usable lane as additional curbside vehicles further ahead reduce clearance.", "hazard_reasoning": "There is a cyclist wearing a black jacket, cycling in the middle of the road, away from the ego car. The cyclist's central position could obstruct the vehicle's path, so the driver should be cautious to maintain a safe distance."}
{"id": "train_04281", "split": "train", "clip_key": "2020-0131-135401_003851_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003851"}, "frames": ["2020-0131-135401_003851_movie_t-3.jpg", "2020-0131-135401_003851_movie_t-2.jpg", "2020-0131-135401_003851_movie_t-1.jpg", "2020-0131-135401_003851_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "A narrow two-way urban street with a single centerline and dry pavement runs between apartment buildings; traffic appears light. Ahead in the ego lane, a white box truck is stopped, fully blocking the lane and constraining the ego vehicle's path. On the left ahead, a cyclist moves away in a curb-separated side lane, remaining outside the main lane and not influencing the blockage. A person walks farther ahead on the left sidewalk, well clear of traffic. An overhead circular sign shows 40, and bright sun from the right creates some glare.", "hazard_reasoning": "There is a white truck stopped in the ego lane. You must stop immediately to avoid colliding with the halted truck blocking your path."}
{"id": "train_04282", "split": "train", "clip_key": "2020-0213-143552_085840_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "085840"}, "frames": ["2020-0213-143552_085840_movie_t-3.jpg", "2020-0213-143552_085840_movie_t-2.jpg", "2020-0213-143552_085840_movie_t-1.jpg", "2020-0213-143552_085840_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided highway with four same-direction lanes and a right-side exit runs beneath an elevated structure; the pavement is dry and smooth, and traffic is light. Overhead blue signs indicate straight for Kumagaya and Saitama and a right exit for Kawaguchi, and a 40 speed-limit sign is visible. A white truck ahead in the ego lane drives away at a steady pace, setting the following distance. A darker truck farther ahead in the adjacent left lane continues straight without affecting the ego path. A small car beyond the trucks proceeds in the center lanes and remains well ahead. No pedestrians or cyclists appear, and there are no obstacles or work zones.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. Following the vehicle ahead helps anticipate any sudden braking by the truck."}
{"id": "train_04283", "split": "train", "clip_key": "2020-0213-143552_034430_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "034430"}, "frames": ["2020-0213-143552_034430_movie_t-3.jpg", "2020-0213-143552_034430_movie_t-2.jpg", "2020-0213-143552_034430_movie_t-1.jpg", "2020-0213-143552_034430_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban four-lane one-way road runs under an elevated structure, the pavement dry and traffic moderate. A white box truck directly ahead in the ego lane slows and sets the pace for the ego car. In the lane to the left, a black hatchback slightly ahead moves slowly parallel to the ego vehicle. In the right adjacent lane farther ahead, a small white van continues straight at a similar speed without entering the ego lane. An overhead sign indicates lane use 70 m ahead with two lanes continuing straight and two lanes turning right. Parked cars line the left curb, reducing space near the edge.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. You should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_04284", "split": "train", "clip_key": "titan_clip_1255_000462_movie", "source": {"subset": "titan", "scenario": "clip_1255", "frame": "000462"}, "frames": ["titan_clip_1255_000462_movie_t-3.jpg", "titan_clip_1255_000462_movie_t-2.jpg", "titan_clip_1255_000462_movie_t-1.jpg", "titan_clip_1255_000462_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban neighborhood scene shows a narrow two-way road with no center line, smooth pavement, and light traffic. Ahead near the center, an oncoming black car moves up the street in its lane toward the ego vehicle, passing on the right. Along the left edge, a cyclist wearing a pink shirt rides toward the ego car on the curbside, potentially nearing the ego lane. On the right, two pedestrians are by the curb-one standing near a driveway and another walking farther ahead-both remaining on the sidewalk. A van is stopped on the left with its sliding door open, reducing clearance beside the guardrail, and a side-street junction with a parking sign is visible ahead.", "hazard_reasoning": "There is a cyclist wearing a pink shirt and cycling on the left side of the road, towards the ego car. The cyclist's proximity to the vehicle's path requires the driver to slow down to maintain a safe distance and prevent a collision."}
{"id": "train_04285", "split": "train", "clip_key": "titan_clip_1213_000162_movie", "source": {"subset": "titan", "scenario": "clip_1213", "frame": "000162"}, "frames": ["titan_clip_1213_000162_movie_t-3.jpg", "titan_clip_1213_000162_movie_t-2.jpg", "titan_clip_1213_000162_movie_t-1.jpg", "titan_clip_1213_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "A quiet urban side street with closely spaced buildings forms a narrow two-way roadway with no centerline and worn but intact asphalt; traffic is light with no moving vehicles. A pedestrian in a gray shirt walks toward the ego vehicle along the left edge of the roadway, close to the travel path and potentially entering the ego lane. Farther ahead near the center of the lane, another pedestrian walks away from the camera, occupying the roadway and setting the pace for any vehicle behind. Parked items line the edges, including a car tucked into a recess on the left and a bicycle near a storefront, narrowing the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, walking on the left side of the road, towards the ego car. The driver should be aware of this pedestrian moving toward the vehicle to avoid a potential collision."}
{"id": "train_04286", "split": "train", "clip_key": "2020-0203-114632_005191_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005191"}, "frames": ["2020-0203-114632_005191_movie_t-3.jpg", "2020-0203-114632_005191_movie_t-2.jpg", "2020-0203-114632_005191_movie_t-1.jpg", "2020-0203-114632_005191_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-lane two-way street with a solid center line and good pavement narrows at a work area, so traffic flows slowly in alternating directions. Ahead in the middle of the road, a pedestrian wearing a helmet and yellow vest stands and guides traffic with a baton, controlling the ego vehicle's movement. In the oncoming lane to the right, a city bus approaches at low speed toward the bottleneck under the controller's direction. Farther back in the opposite lane, a small truck follows the bus and creeps toward the same pinch point. A work pickup with orange cones is stopped along the left edge of the ego lane just ahead, partially blocking the lane and creating the constraint.", "hazard_reasoning": "There is a pedestrian wearing a helmet and yellow vest, standing in the middle of the road, because they are guiding the traffic. The driver must stop because the pedestrian is directing vehicles from the center of the road, creating an obstruction that requires yielding to ensure safety."}
{"id": "train_04287", "split": "train", "clip_key": "2020-0203-154554_070174_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "070174"}, "frames": ["2020-0203-154554_070174_movie_t-3.jpg", "2020-0203-154554_070174_movie_t-2.jpg", "2020-0203-154554_070174_movie_t-1.jpg", "2020-0203-154554_070174_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane in each direction is divided by a painted chevron median; the asphalt is dry and traffic is moderate. Ahead in the ego lane, a red hatchback travels steadily while a gray motorcycle overtakes it within the same lane, moving up the center and briefly occupying space directly ahead of the ego car. To the right beyond the chevron markings, a large red truck approaches in the oncoming lane and continues past without encroaching. Farther ahead near the left curb in the same direction, a small white van proceeds without affecting the ego lane. A blue straight-ahead sign is posted on the left roadside.", "hazard_reasoning": "There is a gray motorcycle overtaking a red vehicle in front of the ego car, in the ego lane. This overtaking maneuver in your lane may lead to a collision, so you should slow down to maintain a safe distance."}
{"id": "train_04288", "split": "train", "clip_key": "2020-0214-102601_050764_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "050764"}, "frames": ["2020-0214-102601_050764_movie_t-3.jpg", "2020-0214-102601_050764_movie_t-2.jpg", "2020-0214-102601_050764_movie_t-1.jpg", "2020-0214-102601_050764_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop promptly to avoid collision.", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with dry pavement and a right-side guardrail; traffic is heavy and mostly stopped. Directly ahead in the ego lane, a blue hatchback is stationary because congestion blocks the way, holding the ego vehicle. In the lane to the left, a small tarpaulin-covered flatbed truck creeps forward beside the ego path, remaining in its lane. Farther ahead in the center lanes, several white SUVs and a larger truck queue and inch forward, sustaining the jam. An overhead 40 speed-limit sign is visible, though the flow is well below it.", "hazard_reasoning": "There is a blue hatchback stopped in the ego lane because of traffic congestion ahead. Drivers should stop promptly to maintain a safe distance and avoid rear-end collisions."}
{"id": "train_04289", "split": "train", "clip_key": "titan_clip_1358_000240_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1358_000240_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1358_000240_movie_t-3_augB1.jpg", "titan_clip_1358_000240_movie_t-2_augB1.jpg", "titan_clip_1358_000240_movie_t-1_augB1.jpg", "titan_clip_1358_000240_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for crossing pedestrian ahead.", "environment_perception": "A narrow urban shopping street with a single vehicle lane is bordered by bollards and storefronts; the pavement is smooth and traffic is very light. Ahead, a woman carrying an umbrella and wearing a pink shirt crosses from the right sidewalk to the left directly in front of the ego car, temporarily occupying the ego lane. A small group of pedestrians stands at the left curb near the camera, lingering at the edge and potentially near the lane but not stepping out. Additional pedestrians walk along the right sidewalk. Bicycles are parked along the left curb, tightening the roadside space.", "hazard_reasoning": "There is a woman carrying an umbrella, wearing a pink shirt, and crossing from the right side to the left side of the street, in front of the ego car. The driver should stop for crossing pedestrian ahead to avoid a collision."}
{"id": "train_04290", "split": "train", "clip_key": "titan_clip_426_000144_movie", "source": {"subset": "titan", "scenario": "clip_426", "frame": "000144"}, "frames": ["titan_clip_426_000144_movie_t-3.jpg", "titan_clip_426_000144_movie_t-2.jpg", "titan_clip_426_000144_movie_t-1.jpg", "titan_clip_426_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one narrow lane each direction and smooth asphalt carries light traffic as the scene enters a roadside construction zone. The ego vehicle proceeds straight while the left side is partially blocked by cones and a work truck. A pedestrian wearing a helmet and yellow vest stands on the left near the centerline, gesturing to guide traffic around the site and thus controlling the ego vehicle's pace. An excavator works beside the truck on the left, its raised arm moving over the work area and narrowing the usable lane. On the right sidewalk near the crosswalk, a woman with a stroller and another pedestrian wait at the curb behind a railing, close to the roadway but not entering the lane. A black van is parked in a recessed bay on the right, and no oncoming vehicles are visible.", "hazard_reasoning": "There is a pedestrian wearing a helmet and yellow vest, standing on the left side of the road, because they are guiding the traffic. The driver should carefully manoeuvre around the pedestrian to avoid conflicts and maintain safety."}
{"id": "train_04291", "split": "train", "clip_key": "2020-0129-144857_085396_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "085396"}, "frames": ["2020-0129-144857_085396_movie_t-3.jpg", "2020-0129-144857_085396_movie_t-2.jpg", "2020-0129-144857_085396_movie_t-1.jpg", "2020-0129-144857_085396_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes shows smooth pavement and moderate, steady flow, separated from oncoming traffic by a guardrail median on the right. A white van ahead in the ego lane drives away at a steady speed and effectively sets the ego car's pace. A worn dump truck slightly ahead to the left continues in the adjacent left lane at a slower speed, staying near the ego's forward path and reducing lateral clearance. Oncoming cars move steadily on the opposite carriageway beyond the barrier. Overhead directional signs are visible above the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04292", "split": "train", "clip_key": "2020-0205-103411_103302_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "103302"}, "frames": ["2020-0205-103411_103302_movie_t-3.jpg", "2020-0205-103411_103302_movie_t-2.jpg", "2020-0205-103411_103302_movie_t-1.jpg", "2020-0205-103411_103302_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with at least two lanes each way runs straight on smooth asphalt, with the oncoming carriageway separated on the right by bollards; traffic is light and steady. A white box truck ahead in the left lane, away from the ego car, continues straight and slowly opens the gap. In the opposing lanes to the right, a dark flatbed truck approaches along the separated roadway without affecting the ego path. Far ahead in the center-right of the ego carriageway, a small car proceeds at a constant speed in its lane. Overhead gantry signs span the road as the route approaches a bridge.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04293", "split": "train", "clip_key": "2020-0205-103411_025374_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "025374"}, "frames": ["2020-0205-103411_025374_movie_t-3.jpg", "2020-0205-103411_025374_movie_t-2.jpg", "2020-0205-103411_025374_movie_t-1.jpg", "2020-0205-103411_025374_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction runs smoothly, separated from oncoming traffic to the right by a metal guardrail; the pavement is good, same-direction flow is light, and opposing flow is heavy. A black van ahead in the left lane drives away from the ego car at a steady pace, remaining in its lane. A dark car farther ahead in the ego lane continues straight, modestly constraining the ego vehicle's speed. A white hatchback near the left edge runs alongside in the adjacent lane without encroaching on the ego lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04294", "split": "train", "clip_key": "titan_clip_810_000228_movie", "source": {"subset": "titan", "scenario": "clip_810", "frame": "000228"}, "frames": ["titan_clip_810_000228_movie_t-3.jpg", "titan_clip_810_000228_movie_t-2.jpg", "titan_clip_810_000228_movie_t-1.jpg", "titan_clip_810_000228_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A quiet urban residential street with a very narrow two-way carriageway, smooth pavement, no centerline, and edge lines beside walls and hedges; traffic remains light. Ahead toward the center, a cyclist wearing a cap rides toward the ego vehicle along the right side, approaching in the shared lane and potentially encroaching on the ego path. No other moving vehicles or pedestrians are visible. A slanted pole juts from the right wall into the shoulder while utility poles line both sides.", "hazard_reasoning": "There is a cyclist wearing a cap, cycling on the right side of the road, toward the ego car. The driver should carefully manoeuvre around the cyclist to avoid a collision as the cyclist is directly ahead in the travel lane."}
{"id": "train_04295", "split": "train", "clip_key": "2020-0226-101332_042535_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "042535"}, "frames": ["2020-0226-101332_042535_movie_t-3.jpg", "2020-0226-101332_042535_movie_t-2.jpg", "2020-0226-101332_042535_movie_t-1.jpg", "2020-0226-101332_042535_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban three-lane arterial runs beneath an elevated roadway, with a metal fence median separating oncoming traffic; pavement is smooth and freshly marked, and traffic queues at an intersection. A white van directly ahead in the ego lane is stopped with brake lights on because the signal ahead is red, holding the ego vehicle. In the left-adjacent lane a white wagon slightly forward also waits in line, matching the stop without affecting the ego path. Farther ahead in the left lane another vehicle moves slowly toward the junction. The traffic signal over the junction shows red, and the rightmost lane is marked for a right turn only. Pedestrians are visible on the far sidewalks beyond the median.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to prevent a rear-end collision with the halted vehicle ahead."}
{"id": "train_04296", "split": "train", "clip_key": "2020-0228-150133_046452_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "046452"}, "frames": ["2020-0228-150133_046452_movie_t-3.jpg", "2020-0228-150133_046452_movie_t-2.jpg", "2020-0228-150133_046452_movie_t-1.jpg", "2020-0228-150133_046452_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and maintain a safe following distance", "environment_perception": "An urban arterial with two same-direction lanes runs between tall buildings, with oncoming lanes separated by a low post-and-rail median; the dry pavement carries heavy, stop-and-go traffic. Directly ahead in the ego lane, a dark gray sedan is stopped because congestion blocks the road and it controls the ego vehicle's pace. In the adjacent left lane, a black sedan slightly ahead creeps with the queue, limiting chances to merge. Beyond the median on the right, a red car-carrier truck and other vehicles approach slowly in the oncoming lanes but remain separated. Overhead blue direction signs indicate lane guidance further along the road.", "hazard_reasoning": "There is a blue sedan stopped in the ego lane because of traffic congestion ahead. The driver should stop and maintain a safe following distance to avoid a rear-end collision in slow-moving traffic."}
{"id": "train_04297", "split": "train", "clip_key": "2020-0131-135401_018506_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "018506"}, "frames": ["2020-0131-135401_018506_movie_t-3.jpg", "2020-0131-135401_018506_movie_t-2.jpg", "2020-0131-135401_018506_movie_t-1.jpg", "2020-0131-135401_018506_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with smooth pavement, painted islands, and guardrails; traffic is light as the scene approaches a signalized junction. A black van is stopped directly ahead in the ego lane, holding the ego vehicle at a standstill. Slightly ahead in the adjacent left lane, a silver car also waits near the intersection and may proceed independently of the ego lane. On the left sidewalk, a pedestrian walks along the fence by a side street but stays clear of the roadway. Overhead traffic signals and direction boards span the lanes at the junction.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane. The van is stationary directly ahead, requiring you to stop to avoid a rear-end collision."}
{"id": "train_04298", "split": "train", "clip_key": "2020-0207-101955_046710_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "046710"}, "frames": ["2020-0207-101955_046710_movie_t-3.jpg", "2020-0207-101955_046710_movie_t-2.jpg", "2020-0207-101955_046710_movie_t-1.jpg", "2020-0207-101955_046710_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a raised median and smooth pavement leads toward a wide intersection, and traffic is moderate and generally flowing. A black sedan directly ahead in the ego lane slows as a beige car in front of it changes from an adjacent lane into the ego lane, briefly constraining the ego car's pace. In the oncoming lanes to the right of the median, a white car approaches the intersection slowly and remains separated from the ego path. A person stands on the left sidewalk near the shops without stepping into the road.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because a vehicle ahead is lane changing into the ego lane. Slow down to maintain a safe following distance and accommodate the lane-changing vehicle."}
{"id": "train_04299", "split": "train", "clip_key": "titan_clip_1098_000042_movie", "source": {"subset": "titan", "scenario": "clip_1098", "frame": "000042"}, "frames": ["titan_clip_1098_000042_movie_t-3.jpg", "titan_clip_1098_000042_movie_t-2.jpg", "titan_clip_1098_000042_movie_t-1.jpg", "titan_clip_1098_000042_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial side street with a single narrow carriageway and no divider has smooth pavement and very light moving traffic, with many parked vehicles along both curbs. On the left foreground, a pedestrian walks past the shopfronts and briefly steps into the edge of the road near the ego path, which constrains the vehicle's pace. Ahead on the right, a small truck stands at the curb beside a blue building, narrowing the usable lane as the ego approaches. Farther ahead on the left, a silver car is stopped in a curbside space with its nose close to the travel lane, reducing clearance. Parked bicycles line the right curb and several scooters cluster near the corner, but none are moving.", "hazard_reasoning": "The caption is empty, indicating no visible hazards in the scene. The driver can maintain normal driving but should remain vigilant in case conditions change."}
{"id": "train_04300", "split": "train", "clip_key": "2020-0213-143552_067496_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "067496"}, "frames": ["2020-0213-143552_067496_movie_t-3.jpg", "2020-0213-143552_067496_movie_t-2.jpg", "2020-0213-143552_067496_movie_t-1.jpg", "2020-0213-143552_067496_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with a single lane in each direction runs past mid-rise buildings, with a painted divider and a fenced side lane on the right; the pavement is dry and traffic is light, easing toward a signalized intersection ahead. A white box truck ahead in the ego lane slows, constraining the ego car's pace. Along the left curb slightly ahead, a blue hatchback is stopped and intrudes toward the lane, reducing clearance beside the truck. On the right beyond the fence, a cyclist travels along the side lane parallel to traffic and remains separated from the ego path. A traffic signal is visible at the intersection ahead.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's reduced speed could lead to a rear-end collision if the driver does not slow down promptly."}
{"id": "train_04301", "split": "train", "clip_key": "2020-0127-132751_096483_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "096483"}, "frames": ["2020-0127-132751_096483_movie_t-3.jpg", "2020-0127-132751_096483_movie_t-2.jpg", "2020-0127-132751_096483_movie_t-1.jpg", "2020-0127-132751_096483_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane per direction and no median has smooth pavement and moderate flow, and the ego approach forms a short queue at a signalized intersection. A silver van directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. Farther ahead in the same lane, a tall box truck is also stationary at the light, keeping the path blocked. In the opposing lane to the right, a white van approaches and passes steadily as oncoming traffic, remaining separated from the ego path. The traffic signal ahead shows red.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car, because of red traffic lights. The driver should stop to avoid colliding with the stationary van and comply with the red signal."}
{"id": "train_04302", "split": "train", "clip_key": "2020-0203-114632_055182_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "055182"}, "frames": ["2020-0203-114632_055182_movie_t-3.jpg", "2020-0203-114632_055182_movie_t-2.jpg", "2020-0203-114632_055182_movie_t-1.jpg", "2020-0203-114632_055182_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial curves right with painted islands and red pavement sections; the surface is clean and traffic is moderate, with same-direction vehicles queued. A silver hatchback directly ahead in the ego lane is stopped for the red signal, holding the ego car. A large white box truck in the adjacent left lane pulls up alongside and stops slightly forward, limiting lateral space and view. Oncoming vehicles in the right-side lanes continue through the junction. Overhead traffic lights display red for this approach, blue direction signs are visible ahead, and tram rails embedded in the lane are evident.", "hazard_reasoning": "A silver hatchback is stopped in front of the ego car in the ego lane, because the light is red. Driver should stop to avoid colliding with the stationary vehicle at the red light, as it indicates a full stop requirement."}
{"id": "train_04303", "split": "train", "clip_key": "2020-0207-151349_082783_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "082783"}, "frames": ["2020-0207-151349_082783_movie_t-3.jpg", "2020-0207-151349_082783_movie_t-2.jpg", "2020-0207-151349_082783_movie_t-1.jpg", "2020-0207-151349_082783_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop immediately to yield to pedestrian", "environment_perception": "An urban two-way road runs under an elevated expressway, with the ego vehicle stopped in the left lane at a signalized crosswalk on smooth pavement and overall light traffic. The overhead signal is red and a straight-ahead-only sign is visible at the junction. A pedestrian with a backpack crosses from the left to the right on the zebra crosswalk directly ahead, moving through the ego lane because the light is red. On the right, a cyclist approaches along the sidewalk and slows near the corner by the crosswalk, which may bring them into the crossing area. Several small vans stand along the right curb near the intersection, narrowing the shoulder and sight lines.", "hazard_reasoning": "There is a pedestrian wearing black pants and a backpack, crossing at the pedestrian crosswalk to the right side of the road, because of the red light. The pedestrian may enter the vehicle's path unexpectedly, so you should stop immediately to avoid a collision."}
{"id": "train_04304", "split": "train", "clip_key": "2020-0220-102630_027075_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "027075"}, "frames": ["2020-0220-102630_027075_movie_t-3.jpg", "2020-0220-102630_027075_movie_t-2.jpg", "2020-0220-102630_027075_movie_t-1.jpg", "2020-0220-102630_027075_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes and no median shows smooth pavement and slow, congested flow. A large white box truck is stopped directly ahead in the ego lane, blocking the path because of traffic congestion ahead. In the adjacent right lane, a tarp-covered truck moves slowly forward alongside and slightly ahead, limiting any chance to merge. Buildings and a sidewalk with a metal guardrail line the left side, with no salient signals visible.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid rear-ending the halted truck."}
{"id": "train_04305", "split": "train", "clip_key": "2020-0213-143552_066469_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "066469"}, "frames": ["2020-0213-143552_066469_movie_t-3.jpg", "2020-0213-143552_066469_movie_t-2.jpg", "2020-0213-143552_066469_movie_t-1.jpg", "2020-0213-143552_066469_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with a hedged divider and merge chevrons is dry and in good condition, and traffic moves very slowly in a packed queue. A white box truck is stopped directly ahead in the ego lane because of congestion, blocking the path. To the left, a blue hatchback in the adjacent same-direction lane creeps forward beside the truck, limiting room for the ego vehicle to merge. Farther ahead left, a dark sedan inches along with the queue and constrains available gaps. On the far right beyond the hedge, a separate side carriageway carries a white truck away from the scene and does not affect the ego lane.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion. Driver should stop to avoid a rear-end collision with the halted truck ahead under congested conditions."}
{"id": "train_04306", "split": "train", "clip_key": "titan_clip_1304_000066_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1304_000066_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1304_000066_movie_t-3_augB1.jpg", "titan_clip_1304_000066_movie_t-2_augB1.jpg", "titan_clip_1304_000066_movie_t-1_augB1.jpg", "titan_clip_1304_000066_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping district with a narrow shared roadway and cobbled pavement appears well maintained, with light vehicle movement but heavy pedestrian flow through a small intersection. Ahead in the center of the lane, a pedestrian pushing a suitcase walks away from the ego vehicle along the middle of the road, occupying the path and likely constraining pace. To the left-front, a man and child with rolling luggage cross from left toward the center, potentially entering the ego lane. At the right edge near bollards, a woman stands close to the curb facing the street and may step into the path. The lane bends slightly right between storefronts, and no traffic signals are visible.", "hazard_reasoning": "There is a pedestrian pushing a suitcase and walking in the middle of the road, away from the ego car. The driver should slow down to avoid colliding with the pedestrian who may change direction unexpectedly."}
{"id": "train_04307", "split": "train", "clip_key": "titan_clip_1238_000336_movie", "source": {"subset": "titan", "scenario": "clip_1238", "frame": "000336"}, "frames": ["titan_clip_1238_000336_movie_t-3.jpg", "titan_clip_1238_000336_movie_t-2.jpg", "titan_clip_1238_000336_movie_t-1.jpg", "titan_clip_1238_000336_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street lined with shops and trees appears, with a single shared lane marked by edge lines and no center divider; the pavement is dry and intact and traffic is light. At the left edge close to the ego path, a pedestrian wearing a black shirt uses a walker and walks toward the ego vehicle along the roadway, narrowing the lane. Farther ahead near the centerline, a bicyclist approaches from the opposite direction at low speed and may pass close to the pedestrian. Slightly farther ahead in the lane, a person pushes a stroller away from the ego vehicle, occupying space in the same direction of travel. Heaped trash bags sit along the right curbside, creating a minor roadside obstacle.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and using a walker, walking at the left side of the road, toward the ego car. The pedestrian may step into the lane unexpectedly as you approach, so you should carefully manoeuvre around them."}
{"id": "train_04308", "split": "train", "clip_key": "2020-0226-101332_024287_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "024287"}, "frames": ["2020-0226-101332_024287_movie_t-3.jpg", "2020-0226-101332_024287_movie_t-2.jpg", "2020-0226-101332_024287_movie_t-1.jpg", "2020-0226-101332_024287_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road runs between mid-rise buildings with smooth dry pavement and painted lane markings; traffic is moderate and queues at an intersection. A gray tarp-covered truck directly ahead in the ego lane is stopped because the overhead signal is red, holding the ego vehicle. In the adjacent lane to the left, a white van and a dark sedan ahead are also stopped with brake lights on, maintaining the line of queued same-direction traffic. On the right side, a coned-off roadside work area with several small trucks and cones narrows the roadway edge near the intersection.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of a red traffic light. The ego-vehicle must stop to maintain a safe distance and obey the red signal."}
{"id": "train_04309", "split": "train", "clip_key": "2020-0212-150403_021970_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "021970"}, "frames": ["2020-0212-150403_021970_movie_t-3.jpg", "2020-0212-150403_021970_movie_t-2.jpg", "2020-0212-150403_021970_movie_t-1.jpg", "2020-0212-150403_021970_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes and no median has smooth pavement and moderate flow that eases near a signalized intersection. A black SUV directly ahead in the ego lane slows because of congestion ahead, constraining the ego-car's pace. To the right, a silver minivan travels alongside in the adjacent lane and continues straight, limiting an immediate lane change. Farther ahead along the right curb, a cyclist rides in the same direction toward the intersection and may edge toward the roadway. The traffic light ahead is green.", "hazard_reasoning": "There's a black SUV slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and adapt to the reduced speed caused by the congestion."}
{"id": "train_04310", "split": "train", "clip_key": "titan_clip_354_000384_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_354_000384_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_354_000384_movie_t-3_augB1.jpg", "titan_clip_354_000384_movie_t-2_augB1.jpg", "titan_clip_354_000384_movie_t-1_augB1.jpg", "titan_clip_354_000384_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for the pedestrian crossing", "environment_perception": "An urban shopping street with a narrow single-lane roadway paved in interlocking bricks, no divider or centerline, and very light vehicle traffic; the view is from an alley entrance between dense storefronts. A pedestrian wearing a black tunic crosses from the left directly in front of the vehicle toward the right, occupying the travel path. Ahead-left, another pedestrian walks away along the shopfront, keeping to the side and not affecting the lane. At the right edge by a convenience store, a man stands near the curb with a phone, waiting beside the path. An orange traffic cone and shop displays line the left edge, slightly narrowing the approach.", "hazard_reasoning": "A pedestrian wearing a black tunic is crossing from the left side of the road to the right. Therefore, the driver must stop because the pedestrian is actively crossing ahead and could enter the vehicle's path unexpectedly."}
{"id": "train_04311", "split": "train", "clip_key": "2020-0127-132751_001793_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "001793"}, "frames": ["2020-0127-132751_001793_movie_t-3.jpg", "2020-0127-132751_001793_movie_t-2.jpg", "2020-0127-132751_001793_movie_t-1.jpg", "2020-0127-132751_001793_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist in adjacent lane.", "environment_perception": "A dense urban two-way arterial meets a wide cross street at a signalized intersection; the pavement is dry and smooth, and overall traffic is light. To the left of the ego vehicle, a cyclist travels straight along the left lane near the curb, riding ahead through the junction and possibly entering the ego path. An oncoming white car approaches in the right-side lanes and proceeds straight past the center of the intersection, remaining separated by lane markings. Pedestrians wait on both sidewalks near the crosswalks. A small truck and a van stand at the far-right curb just beyond the intersection, partially occupying the curbside space.", "hazard_reasoning": "There is a cyclist traveling along the left lane, to the left of the ego car. The cyclist's proximity in the adjacent lane poses a collision risk if the driver drifts or changes lanes, so the driver should anticipate and monitor the cyclist's movements to avoid conflict."}
{"id": "train_04312", "split": "train", "clip_key": "titan_clip_614_000024_movie", "source": {"subset": "titan", "scenario": "clip_614", "frame": "000024"}, "frames": ["titan_clip_614_000024_movie_t-3.jpg", "titan_clip_614_000024_movie_t-2.jpg", "titan_clip_614_000024_movie_t-1.jpg", "titan_clip_614_000024_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban back street with a single narrow lane and no divider runs between tall buildings; the pavement is worn but clear and traffic is light throughout. A silver car ahead in the ego lane proceeds slowly down the center, mildly setting the pace. A pedestrian in brown stands on the left sidewalk beside temporary barriers and stays near the curb rather than in the middle of the road, remaining close to the travel lane. No signals or posted speeds are prominent. Parked scooters on the left and bicycles in a recessed garage on the right, along with orange cones, line the edges without encroaching on the roadway.", "hazard_reasoning": "There is a pedestrian wearing a brown dress and standing in the middle of the road. The pedestrian's position ahead poses a collision risk, so the driver should slow down to proceed safely."}
{"id": "train_04313", "split": "train", "clip_key": "2020-0220-151845_037665_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-151845_037665_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-151845_037665_movie_t-3_augB1.jpg", "2020-0220-151845_037665_movie_t-2_augB1.jpg", "2020-0220-151845_037665_movie_t-1_augB1.jpg", "2020-0220-151845_037665_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial runs under an elevated expressway with smooth pavement and a striped buffer on the left; traffic is moderate and slows slightly ahead. A flatbed truck carrying a covered load travels in the ego lane ahead and decelerates as vehicles bunch under the viaduct, matching the note that congestion ahead causes it to slow. To the right, a white SUV in the adjacent lane is slightly ahead and eases off as well, limiting an easy pass. Further right, a beige sedan with brake lights on moves slowly near the barrier, pacing the flow. Pedestrians remain on the left sidewalk behind railings. The viaduct pillars create intermittent sightline occlusions farther ahead.", "hazard_reasoning": "There is a red truck slowing down in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance as the truck ahead reduces speed due to the congestion."}
{"id": "train_04314", "split": "train", "clip_key": "titan_clip_154_000840_movie", "source": {"subset": "titan", "scenario": "clip_154", "frame": "000840"}, "frames": ["titan_clip_154_000840_movie_t-3.jpg", "titan_clip_154_000840_movie_t-2.jpg", "titan_clip_154_000840_movie_t-1.jpg", "titan_clip_154_000840_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "A narrow urban alley with a single shared lane and no median is lined by shops and construction walls; the pavement is smooth and there is no vehicular traffic. A pedestrian carrying a backpack stands directly ahead in the ego vehicle's path, facing away and temporarily blocking the lane. Farther ahead in the same lane, another pedestrian walks away along the center, limiting the space available if the ego moves forward. Stacked boxes and wine bottles outside the right storefront protrude slightly toward the roadway, adding a minor roadside obstacle. No traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian carrying a backpack, and standing in front of the ego car. The pedestrian is positioned directly ahead, so the driver should stop to avoid a collision."}
{"id": "train_04315", "split": "train", "clip_key": "2020-0226-101332_057701_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "057701"}, "frames": ["2020-0226-101332_057701_movie_t-3.jpg", "2020-0226-101332_057701_movie_t-2.jpg", "2020-0226-101332_057701_movie_t-1.jpg", "2020-0226-101332_057701_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield now to avoid collision", "environment_perception": "An urban multi-lane intersection with smooth pavement and no median is ahead, and traffic is moderate in both directions. Ahead in the ego approach, a small silver minivan slightly left of center proceeds into the junction at low speed, setting the pace. In the opposing flow, a black SUV in the right oncoming lane drives through the intersection toward the ego car, approaching along the path opposite the ego's lane. On the near right, a small tarp-covered pickup is stopped at the curb, protruding slightly into the ego lane. Overhead lane-use signs indicate designated left-turn, straight, and right-turn lanes.", "hazard_reasoning": "A black SUV is driving through the intersection, toward the ego car, in the right lane. The SUV is entering the ego-vehicle's path at an uncontrolled intersection, so yielding is necessary to prevent a collision."}
{"id": "train_04316", "split": "train", "clip_key": "2020-0205-152530_058367_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "058367"}, "frames": ["2020-0205-152530_058367_movie_t-3.jpg", "2020-0205-152530_058367_movie_t-2.jpg", "2020-0205-152530_058367_movie_t-1.jpg", "2020-0205-152530_058367_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An elevated urban expressway in a dense setting curves right with smooth pavement and concrete barriers, and traffic is moderate but slowing near a merge. Directly ahead, a black flatbed truck in the ego lane slows because traffic is congested in front and it constrains the ego vehicle's speed. To the right, several trucks in the adjacent lanes move slowly along the curve, occupying the space the ego lane is merging into. Farther ahead, a short queue of vehicles continues under the flyover, keeping the overall flow sluggish.", "hazard_reasoning": "There is a black truck slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The slowing truck ahead indicates congested traffic, so the driver should reduce speed to maintain a safe following distance."}
{"id": "train_04317", "split": "train", "clip_key": "2020-0131-103016_008427_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "008427"}, "frames": ["2020-0131-103016_008427_movie_t-3.jpg", "2020-0131-103016_008427_movie_t-2.jpg", "2020-0131-103016_008427_movie_t-1.jpg", "2020-0131-103016_008427_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop to avoid colliding with the stopped motorcycle.", "environment_perception": "An urban multi-lane arterial beneath an elevated viaduct has dry, well-marked asphalt and heavy same-direction traffic queued at an intersection, with no visible median. A silver motorcycle is directly ahead in the ego lane, stopped at a red traffic signal and holding the ego car. In the same lane just beyond, a silver hatchback remains stationary and sets the pace of the queue. In the right adjacent lanes, a small silver pickup and a white van wait alongside the ego vehicle, limiting room to merge. The overhead signal shows red and guide signs hang from the structure ahead.", "hazard_reasoning": "A silver motorcycle stopped in front of the ego car, because of a red traffic light. The driver needs to stop to avoid colliding with the halted motorcycle ahead."}
{"id": "train_04318", "split": "train", "clip_key": "2020-0227-153144_017034_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "017034"}, "frames": ["2020-0227-153144_017034_movie_t-3.jpg", "2020-0227-153144_017034_movie_t-2.jpg", "2020-0227-153144_017034_movie_t-1.jpg", "2020-0227-153144_017034_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A busy urban arterial with multiple lanes and a central median runs through tall buildings; the pavement looks smooth and traffic is moderate, moving through a green signal. A gray minivan ahead in the ego lane accelerates away as traffic clears, opening the gap to the ego car. In the left curb lane just ahead, a green taxi continues straight at a similar pace, loosely framing the ego vehicle's path. On the far right, an oncoming white box truck waits at the crosswalk, positioned to turn right into a side street and not entering the ego lane. Several pedestrians gather on the left sidewalk near the corner without stepping into the roadway.", "hazard_reasoning": "There's a gray minivan driving away from the ego car in the left lane, because traffic has cleared ahead. The minivan may change speed or merge unexpectedly into the lane, requiring the driver to monitor its movement and maintain a safe distance."}
{"id": "train_04319", "split": "train", "clip_key": "titan_clip_626_000180_movie", "source": {"subset": "titan", "scenario": "clip_626", "frame": "000180"}, "frames": ["titan_clip_626_000180_movie_t-3.jpg", "titan_clip_626_000180_movie_t-2.jpg", "titan_clip_626_000180_movie_t-1.jpg", "titan_clip_626_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with brick pavement has no marked lanes or divider, and traffic is light as the ego vehicle moves straight at low speed. Ahead slightly to the right, a small black van proceeds slowly near the center of the roadway, setting the pace on the tight carriageway. On the left by the curb, a pedestrian wearing black pants walks away from the ego car along the roadside and could edge into the path. Storefronts line both sides; a bicycle is parked at the right curb and shop displays narrow the margin but remain clear. A blue no-parking sign stands on a pole to the left.", "hazard_reasoning": "There is a pedestrian wearing black pant walking away from the ego car on the left side of the road. The pedestrian is close to the roadway and could step into the lane unexpectedly, so you should slow down to maintain a safe distance."}
{"id": "train_04320", "split": "train", "clip_key": "2020-0204-103442_035844_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "035844"}, "frames": ["2020-0204-103442_035844_movie_t-3.jpg", "2020-0204-103442_035844_movie_t-2.jpg", "2020-0204-103442_035844_movie_t-1.jpg", "2020-0204-103442_035844_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban road under an elevated structure carries two same-direction lanes with a left guardrail and chevron boards; the pavement looks sound and overall flow is slow and congested. A white box truck directly ahead in the ego lane slows to a crawl because of the queue, constraining the ego car's pace. Ahead right, a blue hatchback proceeds slowly in the adjacent lane, continuing parallel to the ego vehicle. Near the front-right, a silver kei car creeps forward in the right lane along dashed merge markings and may enter the ego lane. A blue overhead direction sign is visible.", "hazard_reasoning": "There is a white truck slowing in the ego lane in front of the ego car, because of traffic congestion. The driver should slow down to adapt to the reduced speed and maintain a safe following distance."}
{"id": "train_04321", "split": "train", "clip_key": "titan_clip_420_000192_movie", "source": {"subset": "titan", "scenario": "clip_420", "frame": "000192"}, "frames": ["titan_clip_420_000192_movie_t-3.jpg", "titan_clip_420_000192_movie_t-2.jpg", "titan_clip_420_000192_movie_t-1.jpg", "titan_clip_420_000192_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In an urban residential area, the ego vehicle proceeds on a narrow two-way road with dashed edge lines, no median, and smooth pavement, and traffic is light as the road bends slightly left between buildings. On the near right, a pedestrian walks toward the camera along the curb very close to the ego lane. Ahead near the center, a small black car waits at the mouth of a side street, positioned to join the roadway and relevant to the ego path. Farther ahead on the right, two pedestrians cross the side street toward an apartment entrance without entering the lane. A white mini truck is parked off the left shoulder and a red car stands on the right, tightening the corridor and partly occluding sight around the bend.", "hazard_reasoning": "The road is clear with only slight obstructions from parked vehicles, so no immediate warning is necessary."}
{"id": "train_04322", "split": "train", "clip_key": "2020-0127-132751_090002_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "090002"}, "frames": ["2020-0127-132751_090002_movie_t-3.jpg", "2020-0127-132751_090002_movie_t-2.jpg", "2020-0127-132751_090002_movie_t-1.jpg", "2020-0127-132751_090002_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with a single lane each direction and no median runs beside a hedge on the left and a fenced rail line on the right; the pavement shows dark worn patches and the ego lane slows into a queue. A blue truck directly ahead in the ego lane is stopped, waiting because congestion blocks the way and it constrains the ego car's pace. An oncoming black car travels toward the camera in the opposite lane, keeping to its side and not affecting the ego path. Farther ahead, more same-direction vehicles line up, sustaining the jam.", "hazard_reasoning": "There is a blue truck stopped in front of the ego car because of traffic congestion ahead. The driver should stop to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_04323", "split": "train", "clip_key": "2020-0206-101736_082075_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "082075"}, "frames": ["2020-0206-101736_082075_movie_t-3.jpg", "2020-0206-101736_082075_movie_t-2.jpg", "2020-0206-101736_082075_movie_t-1.jpg", "2020-0206-101736_082075_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban divided arterial with smooth pavement runs past shops on the left and an elevated structure on the right, separated from oncoming lanes by a fenced median; traffic is light. A white truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. Farther ahead in the same lane, a darker truck continues at a steady speed and the white truck follows it. An overhead circular sign displays 50 as the posted speed. Guardrails line the center and sidewalks, and no pedestrians, cyclists, or merging vehicles encroach on the lane.", "hazard_reasoning": "There is a white truck slowing in the ego lane. The truck's reduced speed ahead requires you to slow down to maintain safe distance and prevent a rear-end collision."}
{"id": "train_04324", "split": "train", "clip_key": "titan_clip_442_000162_movie", "source": {"subset": "titan", "scenario": "clip_442", "frame": "000162"}, "frames": ["titan_clip_442_000162_movie_t-3.jpg", "titan_clip_442_000162_movie_t-2.jpg", "titan_clip_442_000162_movie_t-1.jpg", "titan_clip_442_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the pedestrian on the right side", "environment_perception": "An urban narrow two-way street with block-paved surface and no median appears, with light vehicle flow as the ego car proceeds straight. On the right side, a pedestrian wearing a blue shirt walks away from the ego car along the curb. Ahead near the center of the lane, a man in a white shirt walks toward the ego vehicle, constraining the available space. At the left curb, two pedestrians, one holding an umbrella, step from the sidewalk toward the roadway and edge into the lane. A small flatbed truck stands on the right ahead and a black van is parked at the left curb, together narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking on the right side of the road, away from the ego car. The pedestrian may step into traffic unexpectedly, so the driver should yield to allow safe passage."}
{"id": "train_04325", "split": "train", "clip_key": "2020-0203-154554_058291_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "058291"}, "frames": ["2020-0203-154554_058291_movie_t-3.jpg", "2020-0203-154554_058291_movie_t-2.jpg", "2020-0203-154554_058291_movie_t-1.jpg", "2020-0203-154554_058291_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with two lanes in the ego direction and a painted diagonal median runs under leafless street trees; the pavement is dry and traffic in the ego direction is slow and queued. Ahead in the ego lane, a silver van is stopped because of congestion, holding the ego vehicle. To the left in the adjacent curb lane, a beige minivan creeps forward past the queue, moving slightly ahead of the van in front and narrowing the immediate gap beside the ego lane. To the right beyond the hatched median, oncoming cars including a white sedan proceed smoothly toward the camera without interacting with the ego path.", "hazard_reasoning": "There is a silver van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid a rear-end collision with the halted vehicle in the congested traffic."}
{"id": "train_04326", "split": "train", "clip_key": "titan_clip_1321_000588_movie", "source": {"subset": "titan", "scenario": "clip_1321", "frame": "000588"}, "frames": ["titan_clip_1321_000588_movie_t-3.jpg", "titan_clip_1321_000588_movie_t-2.jpg", "titan_clip_1321_000588_movie_t-1.jpg", "titan_clip_1321_000588_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban street with bollard-lined sidewalks and no lane markings stretches ahead on smooth pavement, and traffic is light with no moving vehicles visible. Ahead to the right, a gray van is parked at the curb with its rear hatch open as it is being unloaded, protruding slightly into the roadway and narrowing the ego vehicle's path. On the left foreground, two pedestrians walk toward the camera along the curb, drifting close to the travel lane and potentially entering the ego lane. Farther ahead on the left, another pedestrian moves slowly beside the bollards near the sidewalk edge. Additional parked vehicles line the right side, further constricting the corridor.", "hazard_reasoning": "There is a gray van parked on the right side of the road, because it is being unloaded. It reduces available lane space and may obstruct the path, so the driver should carefully manoeuvre around it."}
{"id": "train_04327", "split": "train", "clip_key": "2020-0131-135401_062610_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "062610"}, "frames": ["2020-0131-135401_062610_movie_t-3.jpg", "2020-0131-135401_062610_movie_t-2.jpg", "2020-0131-135401_062610_movie_t-1.jpg", "2020-0131-135401_062610_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs between tall buildings with a curb on the left and smooth pavement; traffic is heavy and slows near an intersection. A white van directly ahead in the ego lane slows markedly because another vehicle turns left at the intersection within the same lane, constraining the ego car's pace. In the adjacent right lane, a dark van and several cars creep forward alongside, forming a queue that blocks an easy merge. Farther ahead in that lane a small truck also rolls slowly but stays outside the ego path. An overhead sign indicates no U-turns as the queue approaches the junction.", "hazard_reasoning": "There is a white van slowing down in front of the ego car because another vehicle is making a left turn at the intersection in the ego lane. You should slow down to maintain a safe following distance and avoid colliding with the decelerating vehicle."}
{"id": "train_04328", "split": "train", "clip_key": "2020-0207-101955_035639_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "035639"}, "frames": ["2020-0207-101955_035639_movie_t-3.jpg", "2020-0207-101955_035639_movie_t-2.jpg", "2020-0207-101955_035639_movie_t-1.jpg", "2020-0207-101955_035639_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield for the crossing pedestrian", "environment_perception": "An urban intersection under an elevated roadway comes into view, with smooth pavement, painted channelization, and light traffic moving through at a distance. The ego vehicle approaches on a multilane approach without a physical median toward a wide zebra crossing at the junction. Ahead at the crosswalk, a pedestrian wearing a coat and carrying a handbag crosses from right to left, entering the ego path and constraining progress. A few vehicles travel through the far side of the intersection on the cross street. Traffic signals hang beneath the overpass controlling the junction.", "hazard_reasoning": "There is a pedestrian wearing a coat, carrying a handbag, and crossing the street, to the left side, ahead at the pedestrian crossing. The driver should yield because the pedestrian is actively crossing and may step into the vehicle's path."}
{"id": "train_04329", "split": "train", "clip_key": "titan_clip_807_000432_movie", "source": {"subset": "titan", "scenario": "clip_807", "frame": "000432"}, "frames": ["titan_clip_807_000432_movie_t-3.jpg", "titan_clip_807_000432_movie_t-2.jpg", "titan_clip_807_000432_movie_t-1.jpg", "titan_clip_807_000432_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban street curves right on a two-way two-lane road with a faded center line and damp pavement, and traffic moves slowly due to roadside stopping. Ahead on the left, a white truck is parked with a door open as a passenger gets out, narrowing the ego lane and constraining the pace. In front of the truck, a pedestrian crosses from left to right across the ego lane, walking steadily and potentially entering the ego vehicle's path. Along the right curb ahead, a black sedan stands stopped with its doors open while occupants disembark, partly protruding into the opposing lane and drawing attention. No signals are prominent, and buildings and streetlights line the scene.", "hazard_reasoning": "There is a white truck parked on the left side of the road because a passenger is getting out. A passenger exiting could step into the road or block the lane, requiring the driver to carefully manoeuvre around the parked vehicle."}
{"id": "train_04330", "split": "train", "clip_key": "2020-0213-143552_077628_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "077628"}, "frames": ["2020-0213-143552_077628_movie_t-3.jpg", "2020-0213-143552_077628_movie_t-2.jpg", "2020-0213-143552_077628_movie_t-1.jpg", "2020-0213-143552_077628_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided ramp with two same-direction lanes narrows through a work zone bordered by concrete barriers and bollards; the pavement is dry and traffic is light. A black truck ahead in the ego lane slows as it threads the constricted lane, effectively setting the ego car's pace. To the right, a silver van travels slightly ahead in the parallel channel and continues forward where the lanes converge, potentially merging ahead of the ego vehicle. Farther ahead right, a motorcycle proceeds steadily in the same separated lane and remains clear of the ego path. A tall yellow warning sign on the left and work-zone barrels mark the taper.", "hazard_reasoning": "There is a black truck slowing in the ego-car lane, because it's proceeding through a narrow traffic lane. The truck's reduction in speed in the constrained lane can catch you off guard, so you should reduce speed to maintain a safe following distance."}
{"id": "train_04331", "split": "train", "clip_key": "2020-0214-102601_003174_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "003174"}, "frames": ["2020-0214-102601_003174_movie_t-3.jpg", "2020-0214-102601_003174_movie_t-2.jpg", "2020-0214-102601_003174_movie_t-1.jpg", "2020-0214-102601_003174_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential street curves gently left, with one narrow traffic lane and a red-marked side lane bordered by railings and low walls; the pavement looks smooth, there is no median, and traffic is light with no vehicles visible in either direction. A pedestrian on the left edge ahead walks away from the camera along the fenced sidewalk, remaining outside the carriageway and not influencing the ego vehicle's path. Tall walls and trees on the right reduce sightlines around the left bend, creating a mildly blind approach.", "hazard_reasoning": "The road surface is unobstructed and visibility is good, with pedestrians confined to the sidewalk. There are no moving vehicles or obstacles requiring driver action, so no adjustment in speed or direction is necessary."}
{"id": "train_04332", "split": "train", "clip_key": "titan_clip_1163_000378_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1163_000378_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1163_000378_movie_t-3_augB1.jpg", "titan_clip_1163_000378_movie_t-2_augB1.jpg", "titan_clip_1163_000378_movie_t-1_augB1.jpg", "titan_clip_1163_000378_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian in roadway", "environment_perception": "A narrow urban single-lane street with brick pavement runs between shops, and traffic is very light while a parked delivery truck partly blocks the left side. Ahead in the middle of the road, a pedestrian wearing a green shirt and blue pants walks away from the ego vehicle, using the center because the parked vehicle occupies the side and remaining in the ego path. To the left, the delivery truck is stopped with its rear open and a worker beside it, narrowing the roadway and constraining the ego car's progress. Another pedestrian near the truck walks ahead along the lane edge close to the ego path. A portable No Parking sign stands on the right sidewalk, and traffic cones and small crates lie near the truck in the roadway as minor obstacles.", "hazard_reasoning": "There is a pedestrian wearing a green shirt and blue pants, walking in the middle of the road, away from the ego car, because of the parked vehicle. The pedestrian is in the traffic lane and may be obscured by the parked truck, so the driver should yield to avoid collision."}
{"id": "train_04333", "split": "train", "clip_key": "2020-0228-102841_048691_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "048691"}, "frames": ["2020-0228-102841_048691_movie_t-3.jpg", "2020-0228-102841_048691_movie_t-2.jpg", "2020-0228-102841_048691_movie_t-1.jpg", "2020-0228-102841_048691_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban covered roadway with high sound barriers forms a smooth one-way ramp that curves gently right, and the pavement is clean with light traffic. A white van ahead in the ego lane accelerates away as the road ahead remains clear. No other vehicles are nearby in the same direction and there is no opposing traffic within this walled section. The exit toward bright daylight approaches beyond the curve, with narrow shoulders and deep shadows along the walls.", "hazard_reasoning": "There is a white van driving away from the ego car in the ego lane because the road ahead is clear. However, strong sunlight and lens flare under the glass walkway reduce forward visibility, making it harder to judge distances. Drivers should follow the vehicle ahead to maintain safe positioning under these conditions."}
{"id": "train_04334", "split": "train", "clip_key": "2020-0131-103016_052318_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "052318"}, "frames": ["2020-0131-103016_052318_movie_t-3.jpg", "2020-0131-103016_052318_movie_t-2.jpg", "2020-0131-103016_052318_movie_t-1.jpg", "2020-0131-103016_052318_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection approaches on a multi-lane road with a solid yellow divider and smooth pavement, and traffic is queued at the stop line. Ahead, a white truck is stopped in the ego lane because the light is red, holding the ego vehicle. To the right, a black minivan slightly ahead in the parallel lane also stops at the intersection, lining up beside the truck. On the far left near the curb, a cyclist waits by the crosswalk without entering the roadway. The overhead traffic signal shows a red aspect.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to avoid colliding with the stationary truck at the red light."}
{"id": "train_04335", "split": "train", "clip_key": "titan_clip_309_000342_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_309_000342_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_309_000342_movie_t-3_augB1.jpg", "titan_clip_309_000342_movie_t-2_augB1.jpg", "titan_clip_309_000342_movie_t-1_augB1.jpg", "titan_clip_309_000342_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with shops lines both sides, and the ego vehicle proceeds along a single narrow lane with no median; the pavement looks smooth and traffic is light. A small car ahead in the same direction slows near the center of the lane, briefly constraining the ego vehicle's pace. A man in a gray T-shirt and brown shorts pushes a cart in the middle of the road toward the ego car, moving around a parked vehicle and encroaching on the lane. Another pedestrian waits at the right curb by storefronts. Numerous parked cars and signboards further narrow the roadway.", "hazard_reasoning": "There is a man wearing a gray t-shirt and brown shorts and pushing a cart in the middle of the road, toward the ego car, because of the parked vehicle. The driver should slow down to safely navigate around the pedestrian pushing the cart and avoid a collision."}
{"id": "train_04336", "split": "train", "clip_key": "2020-0207-151349_058702_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "058702"}, "frames": ["2020-0207-151349_058702_movie_t-3.jpg", "2020-0207-151349_058702_movie_t-2.jpg", "2020-0207-151349_058702_movie_t-1.jpg", "2020-0207-151349_058702_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban undivided multi-lane road runs through a dense city corridor, the pavement dry and smooth, with heavy, slow-moving traffic ahead in the same direction. A white sedan directly ahead in the ego lane slows in stop-and-go flow, constraining the ego car's pace because of congestion further up the road. To the right, a white van in the adjacent same-direction lane inches forward alongside, limiting room for a lane change. On the far left curb, a cyclist with a large backpack rides in the same direction near the ego lane and could drift toward the travel lane as vehicles pass.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The sedan's deceleration due to congestion requires the driver to slow down and maintain a safe distance."}
{"id": "train_04337", "split": "train", "clip_key": "2020-0207-151349_018716_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "018716"}, "frames": ["2020-0207-151349_018716_movie_t-3.jpg", "2020-0207-151349_018716_movie_t-2.jpg", "2020-0207-151349_018716_movie_t-1.jpg", "2020-0207-151349_018716_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial has smooth pavement, a low median separating lane groups, and a red bus lane on the left; traffic is moderate as vehicles approach a signalized junction ahead. A white box truck drives ahead in the ego lane, moving away steadily and setting the ego car's pace. In the right-side lanes, several cars, including a white SUV and a black minivan, travel alongside and slow near the intersection while remaining separated by the narrow divider. In the red lane on the left, a city bus stops by the curb as pedestrians wait behind the railing, clear of the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The green traffic light ahead may change soon, so you should follow the vehicle ahead to maintain a safe distance and adapt to the signal change."}
{"id": "train_04338", "split": "train", "clip_key": "titan_clip_781_000852_movie", "source": {"subset": "titan", "scenario": "clip_781", "frame": "000852"}, "frames": ["titan_clip_781_000852_movie_t-3.jpg", "titan_clip_781_000852_movie_t-2.jpg", "titan_clip_781_000852_movie_t-1.jpg", "titan_clip_781_000852_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban commercial street features a single narrow mixed-traffic lane with worn pavement and no median, and overall vehicular flow is light with only parked vehicles. Cones and a parked van constrict the right edge, creating a temporary work area. A pedestrian in a patterned shirt carrying a handbag walks toward the ego vehicle along the right side of the lane because the parked vehicle blocks the edge, putting them near the ego path. At the open rear of the van on the right, a worker unloads boxes and stands close to the lane, further narrowing the passage. Far ahead near a cross street, a cluster of pedestrians moves laterally across the roadway, occupying much of the visible path.", "hazard_reasoning": "There is a pedestrian wearing a patterned shirt and a handbag, walking along the right side of the lane, toward the ego car, because of the parked vehicle. The driver should slow down because the pedestrian may unexpectedly step into the lane due to the obstructed sidewalk."}
{"id": "train_04339", "split": "train", "clip_key": "2020-0226-140503_060668_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "060668"}, "frames": ["2020-0226-140503_060668_movie_t-3.jpg", "2020-0226-140503_060668_movie_t-2.jpg", "2020-0226-140503_060668_movie_t-1.jpg", "2020-0226-140503_060668_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban street with wet pavement and sidewalk railings appears as a two-lane road without a median, and traffic is stopped at a light. A white hatchback directly ahead in the ego lane is stopped because pedestrians are crossing at the marked crosswalk. Several pedestrians ahead and to the right cross the road under umbrellas, occupying the ego vehicle's path and keeping traffic halted. More pedestrians wait along the left sidewalk near the curb by the crossing but do not step into the lane. An overhead signal shows red, and a posted speed limit of 20 is visible on the left.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego-car, in the ego lane, because of pedestrians crossing ahead at the crosswalk. Since the hatchback has stopped for pedestrians at the crosswalk, the driver must yield to ensure pedestrian safety."}
{"id": "train_04340", "split": "train", "clip_key": "2020-0221-115122_009289_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "009289"}, "frames": ["2020-0221-115122_009289_movie_t-3.jpg", "2020-0221-115122_009289_movie_t-2.jpg", "2020-0221-115122_009289_movie_t-1.jpg", "2020-0221-115122_009289_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided roadway with multiple same-direction lanes runs under an elevated expressway, the pavement looks good, and traffic is heavy and stop-and-go. A white van directly ahead in the ego lane is stopped because of traffic congestion, constraining the ego car. To the left, a gray hatchback slightly ahead in the adjacent lane creeps forward with the queue and stays in its lane. Alongside on the right, a white sedan inches ahead in the right lane near the guardrail, running parallel to the ego vehicle.", "hazard_reasoning": "A white van is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop promptly to avoid a rear-end collision due to the unexpected halt of the van."}
{"id": "train_04341", "split": "train", "clip_key": "2020-0131-103016_025510_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "025510"}, "frames": ["2020-0131-103016_025510_movie_t-3.jpg", "2020-0131-103016_025510_movie_t-2.jpg", "2020-0131-103016_025510_movie_t-1.jpg", "2020-0131-103016_025510_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A suburban two-way road with a curb and painted median stretches ahead; the ego car proceeds in the left lane on dry, smooth pavement while overall traffic appears light. A white box truck is stopped directly ahead in the ego lane, constraining the ego vehicle's progress. To the right, several oncoming cars travel past in their lanes on the opposite side of the median and continue straight without interacting with the ego path. A blue circular 40 speed limit sign is visible on the left roadside, and the scene is bordered by railings and trees.", "hazard_reasoning": "A white truck is stopped in front of the ego car in the ego lane. The driver should stop to avoid colliding with the halted vehicle ahead under the red traffic light."}
{"id": "train_04342", "split": "train", "clip_key": "2020-0203-154554_007285_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "007285"}, "frames": ["2020-0203-154554_007285_movie_t-3.jpg", "2020-0203-154554_007285_movie_t-2.jpg", "2020-0203-154554_007285_movie_t-1.jpg", "2020-0203-154554_007285_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way road without a visible centerline runs straight between metal railings and large bicycle parking areas; the pavement is smooth and traffic is light. Several cars far ahead in the ego lane travel straight at a steady pace. A red sports car is parked on the right side, occupying the opposing lane where no marked parking space is visible, narrowing that side of the roadway. A few oncoming cars appear farther down the street in the right-side lane and proceed through.", "hazard_reasoning": "There is a red sports car parked in the right lane of the ego car, because there is no parking spot. This parked vehicle blocks the driving lane and requires the driver to follow the vehicle ahead to maintain safe spacing and avoid sudden maneuvers."}
{"id": "train_04343", "split": "train", "clip_key": "2020-0213-143552_028946_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "028946"}, "frames": ["2020-0213-143552_028946_movie_t-3.jpg", "2020-0213-143552_028946_movie_t-2.jpg", "2020-0213-143552_028946_movie_t-1.jpg", "2020-0213-143552_028946_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban neighborhood with a very narrow two-way street and no median is shown; the pavement is dry and in good condition, and traffic is light. Directly ahead near the curb, a pedestrian wearing brown pants walks away from the ego vehicle along the edge of the roadway and stays out of the lane, walking rather than crossing as no crosswalk is visible on the right. No other vehicles are moving nearby. A signpost stands on the corner, and the building frontage creates a tight blind right-hand corner.", "hazard_reasoning": "There is a pedestrian wearing brown pant in front of the ego car walking away from the ego car because there is no crosswalk on the right side. The driver should slow down to anticipate the pedestrian potentially crossing unexpectedly on this unmarked section of road."}
{"id": "train_04344", "split": "train", "clip_key": "2020-0203-154554_022355_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "022355"}, "frames": ["2020-0203-154554_022355_movie_t-3.jpg", "2020-0203-154554_022355_movie_t-2.jpg", "2020-0203-154554_022355_movie_t-1.jpg", "2020-0203-154554_022355_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial with a planted median divides opposing traffic, and the smooth pavement appears clean and dry. Flow is moderate to heavy and slows near an overhead signalized intersection ahead. Directly ahead in the ego lane, a black sedan slows because congestion builds in front, constraining the ego car's pace. In the left adjacent lane, a white hatchback slightly ahead creeps forward alongside, reducing room for the ego vehicle to merge left. Across the median to the right, an oncoming city bus and several cars move steadily in their lanes without affecting the ego path. No obstacles or work zones are visible.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. This slowdown indicates reduced speed due to congestion ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_04345", "split": "train", "clip_key": "2020-0205-103411_119793_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "119793"}, "frames": ["2020-0205-103411_119793_movie_t-3.jpg", "2020-0205-103411_119793_movie_t-2.jpg", "2020-0205-103411_119793_movie_t-1.jpg", "2020-0205-103411_119793_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth asphalt and side guardrails runs beneath a pedestrian overpass, and traffic is heavy and mostly stopped in bright daylight. A black hatchback directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. In the adjacent right lane, a large concrete mixer truck slightly ahead is also stopped, blocking the right side. A small white car in the left lane a little farther ahead inches forward with the queue.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary hatchback ahead."}
{"id": "train_04346", "split": "train", "clip_key": "2020-0131-135401_037342_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "037342"}, "frames": ["2020-0131-135401_037342_movie_t-3.jpg", "2020-0131-135401_037342_movie_t-2.jpg", "2020-0131-135401_037342_movie_t-1.jpg", "2020-0131-135401_037342_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane each direction approaches a signalized intersection, with no median and smooth pavement; traffic is light. The white hatchback directly ahead in the ego lane is stopped because the light is red, holding the ego vehicle at the stop line. A dark box truck on the cross street travels right to left through the intersection, and a small orange van follows it across while the ego waits. The overhead signal facing the ego shows solid red, and a school-zone pedestrian warning sign is visible on the left sidewalk. No obstacles or work zones appear in the lane.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to maintain a safe distance and avoid collision."}
{"id": "train_04347", "split": "train", "clip_key": "2020-0220-102630_066490_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "066490"}, "frames": ["2020-0220-102630_066490_movie_t-3.jpg", "2020-0220-102630_066490_movie_t-2.jpg", "2020-0220-102630_066490_movie_t-1.jpg", "2020-0220-102630_066490_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane road runs between mid-rise buildings, with at least two same-direction lanes and no median visible; the pavement is smooth and traffic is heavy and mostly stopped. A white van is stopped directly ahead in the ego lane due to congestion, holding the ego car. In the adjacent right lane, a dark car inches forward alongside, constraining any lane change. At the left curb, a small car and a box truck wait in the marked shoulder, narrowing the margin but remaining out of the lane. An overhead blue sign displays three straight arrows.", "hazard_reasoning": "There is a white van stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead. Drivers should stop to avoid colliding with the stationary vehicle ahead under these conditions."}
{"id": "train_04348", "split": "train", "clip_key": "2020-0129-105040_088892_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "088892"}, "frames": ["2020-0129-105040_088892_movie_t-3.jpg", "2020-0129-105040_088892_movie_t-2.jpg", "2020-0129-105040_088892_movie_t-1.jpg", "2020-0129-105040_088892_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at red light.", "environment_perception": "An urban multi-lane arterial with smooth dry pavement and a bollard-separated median carries moderate traffic queuing at an intersection. A gray hatchback stopped in the ego lane directly ahead waits at a red light, holding the ego vehicle. A large yellow work truck is in the left adjacent lane slightly ahead, also stationary for the signal and parallel to the ego path. A white van sits ahead-right in the next lane, lined up with the queue and not moving. On the far right, beyond the posts, oncoming cars pass in their own lanes. The overhead traffic signal facing the ego direction shows red.", "hazard_reasoning": "There is a gray hatchback stopped in the ego lane in front of the ego car, because of a red traffic light. The driver should stop to avoid a collision and obey the red light."}
{"id": "train_04349", "split": "train", "clip_key": "2020-0226-140503_088490_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-140503_088490_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-140503_088490_movie_t-3_augB1.jpg", "2020-0226-140503_088490_movie_t-2_augB1.jpg", "2020-0226-140503_088490_movie_t-1_augB1.jpg", "2020-0226-140503_088490_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single lane each way runs between mid-rise buildings; a solid yellow centerline divides damp, intact pavement, and traffic moves slowly in both directions. A small white hatchback directly ahead in the ego lane crawls forward in a queue, limiting the ego car's pace. To the right, a white minivan in the oncoming lane slows with congestion ahead and holds near the centerline without entering the ego lane. Behind the minivan, a large oncoming truck also creeps forward, reducing lateral clearance as opposing queues meet.", "hazard_reasoning": "There is a white minivan slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead on the road. The white minivan's deceleration signals upcoming congestion, so slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_04350", "split": "train", "clip_key": "titan_clip_929_000126_movie", "source": {"subset": "titan", "scenario": "clip_929", "frame": "000126"}, "frames": ["titan_clip_929_000126_movie_t-3.jpg", "titan_clip_929_000126_movie_t-2.jpg", "titan_clip_929_000126_movie_t-1.jpg", "titan_clip_929_000126_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban intersection on a narrow two-way street has no median and smooth pavement, with light traffic and several vehicles stopped near the curbs. A pedestrian in green pants and a blue shirt crosses the near crosswalk from right to left ahead, moving away from the ego vehicle and briefly occupying the ego path. Two pedestrians wait at the far left corner by the shop, standing near the curb and likely to enter the crosswalk after the crosser. A white van is stopped along the left curb ahead in the same direction as the ego, slightly narrowing the usable lane, while a small truck is parked on the right at the corner. Signal heads are visible at the junction.", "hazard_reasoning": "There a man with a shaved head, wearing green pants and a blue shirt and crossing on a pedestrian crosswalk, away from the ego car. The driver should stop to yield to the pedestrian and prevent a collision."}
{"id": "train_04351", "split": "train", "clip_key": "2020-0220-102630_076159_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "076159"}, "frames": ["2020-0220-102630_076159_movie_t-3.jpg", "2020-0220-102630_076159_movie_t-2.jpg", "2020-0220-102630_076159_movie_t-1.jpg", "2020-0220-102630_076159_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban corridor with mid-rise buildings shows a two-lane roadway in the ego direction; the pavement is dry and smooth and traffic flows at a moderate pace. A white van ahead in the ego lane drives steadily away from the ego car, effectively setting the pace. To the right, a silver car in the adjacent lane runs slightly ahead and continues straight, overtaking without moving toward the ego lane. Farther ahead in that right lane, a small white car proceeds with the flow and remains clear of the ego path. A parked SUV sits along the left curb outside the travel lanes.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. The driver should be cautious because the van ahead may slow or brake unexpectedly, reducing the safe following distance."}
{"id": "train_04352", "split": "train", "clip_key": "2020-0210-142719_004949_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-142719_004949_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-142719_004949_movie_t-3_augB1.jpg", "2020-0210-142719_004949_movie_t-2_augB1.jpg", "2020-0210-142719_004949_movie_t-1_augB1.jpg", "2020-0210-142719_004949_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the slowing motorcycle ahead", "environment_perception": "An urban two-way intersection with narrow lanes and no median comes into view; the pavement is smooth and overall traffic is light. On the cross street to the right, a white hatchback proceeds away along the near curb, posing little constraint to the ego vehicle. At the near-right corner, two cyclists wait stationary by the guardrail next to the crosswalk, and they may roll into the crossing as the vehicle moves through. Several pedestrians cluster on the near-left sidewalk at the crosswalk, some edging toward the curb.", "hazard_reasoning": "There is a black motorcycle oncoming in the right traffic lane, slowing as it approaches the intersection where the ego-car is making a right-hand turn. The driver should be aware of the slowing motorcycle ahead to avoid cutting it off and risking a collision."}
{"id": "train_04353", "split": "train", "clip_key": "2020-0228-102841_049486_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "049486"}, "frames": ["2020-0228-102841_049486_movie_t-3.jpg", "2020-0228-102841_049486_movie_t-2.jpg", "2020-0228-102841_049486_movie_t-1.jpg", "2020-0228-102841_049486_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the merging van", "environment_perception": "An urban underpass with smooth pavement leads to daylight, forming a single through lane bounded by concrete walls and a right-side barrier; traffic is light and steady. A white van ahead near the exit merges into the ego lane from the left ramp and then continues straight, briefly setting the pace. Farther ahead in the same direction, a small car proceeds straight on the open road without affecting the ego vehicle. No salient signals or hazards are visible.", "hazard_reasoning": "There is a white van merging into the ego lane, from the left ramp. This merging vehicle could enter your path abruptly, so you should be aware of its movement to avoid a collision."}
{"id": "train_04354", "split": "train", "clip_key": "titan_clip_281_000936_movie", "source": {"subset": "titan", "scenario": "clip_281", "frame": "000936"}, "frames": ["titan_clip_281_000936_movie_t-3.jpg", "titan_clip_281_000936_movie_t-2.jpg", "titan_clip_281_000936_movie_t-1.jpg", "titan_clip_281_000936_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with no median and smooth pavement runs between closely spaced buildings, and traffic is light as the ego car proceeds slowly. A male pedestrian in a blue T-shirt and black shorts crosses directly ahead from the left to the right, moving across the ego lane and briefly occupying the path. A white van is stopped at the right curb near the foreground, protruding slightly into the oncoming side but remaining stationary. Farther ahead, several parked cars line the right edge, reducing clearance and sightlines. A red triangular stop sign and matching stop marking appear at a small intersection ahead.", "hazard_reasoning": "There is a male pedestrian wearing a blue t-shirt and black shorts, crossing the street in front of the ego car, from the left side to the right side of the street. The driver should slow down because the pedestrian is entering the vehicle's path and may cross unpredictably."}
{"id": "train_04355", "split": "train", "clip_key": "2020-0220-102630_019470_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "019470"}, "frames": ["2020-0220-102630_019470_movie_t-3.jpg", "2020-0220-102630_019470_movie_t-2.jpg", "2020-0220-102630_019470_movie_t-1.jpg", "2020-0220-102630_019470_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with at least two same-direction lanes runs between midrise buildings; the asphalt looks smooth and traffic is heavy and stop-and-go. A white sedan directly ahead in the ego lane is stopped because congestion extends forward, holding the ego vehicle. Farther ahead in the same lane, a large box truck is also stopped, contributing to the queue that blocks progress. In the adjacent right lane, a dark van edges forward alongside at low speed, parallel to the ego vehicle. On the left sidewalk, a person with a bicycle waits near the hedge, staying out of the roadway.", "hazard_reasoning": "There is a white sedan stopped in the ego lane because of traffic congestion ahead. Drivers should stop to maintain a safe distance and prevent a collision with the stationary vehicle."}
{"id": "train_04356", "split": "train", "clip_key": "titan_clip_1104_000588_movie", "source": {"subset": "titan", "scenario": "clip_1104", "frame": "000588"}, "frames": ["titan_clip_1104_000588_movie_t-3.jpg", "titan_clip_1104_000588_movie_t-2.jpg", "titan_clip_1104_000588_movie_t-1.jpg", "titan_clip_1104_000588_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Maneuvre around the parked van", "environment_perception": "An urban, narrow shopping street with tiled pavement and no median extends ahead, and the ego vehicle proceeds slowly along a single shared lane with light vehicular flow but several pedestrians. On the right, a gray van is parked at the curb where there are no designated parking spaces, narrowing the available lane. A pedestrian ahead in the middle of the roadway walks away in the ego path, constraining the vehicle's pace. Another pedestrian at the left foreground steps from the storefront edge toward the lane and passes close across the front, potentially entering the path. Orange cones and small items beside the right-hand building sit near the parked van, further tightening the corridor.", "hazard_reasoning": "There is a gray van parked on the right side of the road because there are no designated parking spaces. The driver should maneuver around the parked van to avoid collision and maintain safe traffic flow."}
{"id": "train_04357", "split": "train", "clip_key": "titan_clip_942_000384_movie", "source": {"subset": "titan", "scenario": "clip_942", "frame": "000384"}, "frames": ["titan_clip_942_000384_movie_t-3.jpg", "titan_clip_942_000384_movie_t-2.jpg", "titan_clip_942_000384_movie_t-1.jpg", "titan_clip_942_000384_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban, narrow one-lane side street with no divider leads toward a small unsignalized junction; the asphalt is smooth and traffic is very light. Storefront signs and vending machines line the curbs, with shop boards narrowing the left margin. A pedestrian in a white shirt and black pants walks toward the ego vehicle along the left edge and could step into the lane. Another person stands beside a couple of bicycles by the left storefront just ahead, stationary and slightly intruding into the roadway. A cyclist moves through the junction ahead on the right along the cross street, remaining outside the ego lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the left side of the road, towards the ego car. Drivers should be aware because the pedestrian's trajectory could lead them into the vehicle's path."}
{"id": "train_04358", "split": "train", "clip_key": "2020-0220-102630_054567_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "054567"}, "frames": ["2020-0220-102630_054567_movie_t-3.jpg", "2020-0220-102630_054567_movie_t-2.jpg", "2020-0220-102630_054567_movie_t-1.jpg", "2020-0220-102630_054567_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop promptly to avoid collision.", "environment_perception": "An urban multi-lane arterial runs straight with two or more same-direction lanes beside a curbside hedge and railing; the pavement is smooth and traffic is heavy, moving in slow stop-and-go. A white van directly ahead in the ego lane is stopped because of congestion and holds the ego vehicle at a standstill. To the right, a yellow boxy minivan in the adjacent lane inches forward alongside, limiting any opening for a lane change. Near the passenger-side front, a blue hatchback creeps ahead in its lane and keeps close spacing with the queue.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. The van's stationary position in a congested traffic flow requires you to stop to maintain a safe following distance and prevent a collision."}
{"id": "train_04359", "split": "train", "clip_key": "2020-0218-103119_005201_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "005201"}, "frames": ["2020-0218-103119_005201_movie_t-3.jpg", "2020-0218-103119_005201_movie_t-2.jpg", "2020-0218-103119_005201_movie_t-1.jpg", "2020-0218-103119_005201_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential scene shows a narrow two-way local street with no median and smooth pavement; the ego vehicle waits in the left lane at a T-intersection with a zebra crossing, and overall traffic is light with no moving vehicles. No pedestrians or cyclists are in or approaching the crosswalk ahead, so nothing enters the ego path. On the left corner, a 30 km/h speed limit sign, a triangular stop sign, and a pedestrian crossing sign are clearly visible. Blue cones and a low rail line the left edge, and a bicycle is parked by a doorway without obstructing the road.", "hazard_reasoning": "No hazards are present, so the driver can continue driving normally without additional warnings."}
{"id": "train_04360", "split": "train", "clip_key": "titan_clip_902_000564_movie", "source": {"subset": "titan", "scenario": "clip_902", "frame": "000564"}, "frames": ["titan_clip_902_000564_movie_t-3.jpg", "titan_clip_902_000564_movie_t-2.jpg", "titan_clip_902_000564_movie_t-1.jpg", "titan_clip_902_000564_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban two-way residential street with no centerline runs between close buildings, the pavement dry and intact, and traffic is light with no moving vehicles ahead. To the left ahead, a white delivery truck is parked for unloading with its rear doors open, partly intruding into the ego lane and narrowing the passage. On the right beside the curb, a pedestrian carrying bags descends the steps and walks along the edge, close to the roadway. Near the truck in the left margin, a small blue dolly and some bags sit on the street, creating minor obstacles. No salient traffic signals or signs are visible.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. The truck partially obstructs the lane and may reduce visibility and available space, so you should manoeuvre carefully around it."}
{"id": "train_04361", "split": "train", "clip_key": "titan_clip_1330_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1330_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1330_000204_movie_t-3_augB1.jpg", "titan_clip_1330_000204_movie_t-2_augB1.jpg", "titan_clip_1330_000204_movie_t-1_augB1.jpg", "titan_clip_1330_000204_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban commercial side street under an elevated structure has a single shared lane with block paving and no median; motor traffic is light while pedestrians are present, and a small delivery truck is stopped ahead, partly occupying the lane. Shopfront signs and displays crowd the left shoulder. On the left edge near the ego-vehicle's path, a pedestrian in a black dress carrying a backpack walks toward the ego-vehicle because other pedestrians and obstacles on the shoulder push her into the lane. Beside her, a man in a white shirt walks toward the ego-vehicle in the travel lane and constrains the pace. Farther ahead near the truck, another pedestrian on the right walks away along the curb. Boxes and carts around the truck further reduce clearance.", "hazard_reasoning": "There is a pedestrian wearing a black dress, carrying a backpack, and walking on the left side of the road towards the ego-car because of another pedestrian and obstacles on the left shoulder. The pedestrian may step into the vehicle path unexpectedly due to limited space, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_04362", "split": "train", "clip_key": "titan_clip_1143_000138_movie", "source": {"subset": "titan", "scenario": "clip_1143", "frame": "000138"}, "frames": ["titan_clip_1143_000138_movie_t-3.jpg", "titan_clip_1143_000138_movie_t-2.jpg", "titan_clip_1143_000138_movie_t-1.jpg", "titan_clip_1143_000138_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the van carefully", "environment_perception": "An urban commercial street with two same-direction lanes and no median stretches ahead on smooth pavement, and traffic remains light throughout. Ahead in the ego lane by the left curb, a white van is parked for unloading, partly blocking the lane and constraining the ego vehicle's path. Farther ahead in the adjacent right lane, a small car continues straight, moving away and not impeding. Pedestrians on both sidewalks walk along behind guardrails and pause by shops, staying off the roadway.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane, because it is being unloaded. The stationary van blocks the driving lane and poses a collision risk, so the driver should manoeuvre around it carefully."}
{"id": "train_04363", "split": "train", "clip_key": "titan_clip_1336_000306_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1336_000306_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1336_000306_movie_t-3_augB1.jpg", "titan_clip_1336_000306_movie_t-2_augB1.jpg", "titan_clip_1336_000306_movie_t-1_augB1.jpg", "titan_clip_1336_000306_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single shared lane and no median runs between shops; the pavement is smooth and traffic is light with no moving vehicles close by. A pedestrian in a white shirt pushes a trolley toward the camera along the middle of the road, approaching the ego lane and constraining speed. Slightly nearer, another pedestrian crosses the lane from right to left ahead, continuing at a steady walk and briefly occupying the path. Farther ahead a small car sits near the left edge and remains distant. Parked bicycles and a scooter line the right side, while delivery racks and boxes on the left encroach into the roadway, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, pushing a trolley in the middle of the road, towards the ego car. The driver should slow down to avoid a collision with the pedestrian entering the lane unexpectedly."}
{"id": "train_04364", "split": "train", "clip_key": "titan_clip_516_000288_movie", "source": {"subset": "titan", "scenario": "clip_516", "frame": "000288"}, "frames": ["titan_clip_516_000288_movie_t-3.jpg", "titan_clip_516_000288_movie_t-2.jpg", "titan_clip_516_000288_movie_t-1.jpg", "titan_clip_516_000288_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban side street with no marked lanes runs between buildings, the pavement clean and dry, and traffic is light with only parked vehicles. A black SUV sits along the left curb beside the ego vehicle, narrowing the passage. Ahead slightly to the right, a white truck is parked in the ego lane, and several red barricades stand in front of it, partly blocking the lane and constraining the path forward. Two pedestrians walk along the left sidewalk in the distance, continuing straight without entering the road. The right sidewalk has a roped-off area near a storefront.", "hazard_reasoning": "There is a white truck parked in the ego lane to the right hand side. The parked truck blocks the travel lane and may force you to swerve, so you should carefully manoeuvre around it."}
{"id": "train_04365", "split": "train", "clip_key": "2020-0212-150403_021884_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "021884"}, "frames": ["2020-0212-150403_021884_movie_t-3.jpg", "2020-0212-150403_021884_movie_t-2.jpg", "2020-0212-150403_021884_movie_t-1.jpg", "2020-0212-150403_021884_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way arterial runs between mid-rise buildings, the pavement smooth and dry with only a painted center median and moderate traffic. The ego vehicle proceeds in the left lane. A black SUV ahead in the ego lane slows, constraining the ego car's pace. To the right, a small white flatbed truck approaches in the oncoming lane, continuing straight and passing opposite the ego while staying within its lane. Farther right, an oncoming white sedan follows the truck at a steady speed.", "hazard_reasoning": "There is a black SUV slowing in front of the ego car in the ego lane. The SUV's unexpected deceleration could lead to a rear-end collision if the driver does not reduce speed, so the driver should slow down to maintain a safe following distance."}
{"id": "train_04366", "split": "train", "clip_key": "titan_clip_727_000246_movie", "source": {"subset": "titan", "scenario": "clip_727", "frame": "000246"}, "frames": ["titan_clip_727_000246_movie_t-3.jpg", "titan_clip_727_000246_movie_t-2.jpg", "titan_clip_727_000246_movie_t-1.jpg", "titan_clip_727_000246_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked sedan", "environment_perception": "An urban, narrow two-way street with smooth pavement runs between mid-rise buildings and a fenced area, and traffic is light with no marked centerline. A black sedan is parked on the right side ahead, slightly protruding into the roadway and narrowing the lane, which constrains the ego vehicle's path. Two pedestrians on the right edge in the near foreground walk toward the camera along the curb, close to the carriageway and potentially near the ego lane. Farther ahead the way appears clear, with no active signals or notable signs visible.", "hazard_reasoning": "There is a black sedan parked on the right side on the road. The parked sedan reduces available road width and requires careful manoeuvring to avoid collision."}
{"id": "train_04367", "split": "train", "clip_key": "2020-0220-102630_056223_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "056223"}, "frames": ["2020-0220-102630_056223_movie_t-3.jpg", "2020-0220-102630_056223_movie_t-2.jpg", "2020-0220-102630_056223_movie_t-1.jpg", "2020-0220-102630_056223_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes has smooth pavement and no visible median, and traffic moves slowly beneath a pedestrian overpass. A yellow minivan ahead in the ego lane slows because of congestion further up the road and sets the ego car's pace. A white van in the right-adjacent lane travels slightly ahead at a similar speed, limiting an immediate lane change. A silver car farther ahead in the center lanes brakes with the queue. A blue straight-ahead sign stands on the left side.", "hazard_reasoning": "There is a yellow minivan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Slow down to match the reduced speed of the minivan and maintain a safe following distance to avoid a collision."}
{"id": "train_04368", "split": "train", "clip_key": "titan_clip_1203_000348_movie", "source": {"subset": "titan", "scenario": "clip_1203", "frame": "000348"}, "frames": ["titan_clip_1203_000348_movie_t-3.jpg", "titan_clip_1203_000348_movie_t-2.jpg", "titan_clip_1203_000348_movie_t-1.jpg", "titan_clip_1203_000348_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the stopped van", "environment_perception": "An urban commercial street with one narrow lane in each direction and no median; the pavement is smooth and dry and traffic is very light. Ahead in the ego left lane, a white van is stopped close to the curb while the driver talks with a pedestrian beside the vehicle, blocking the ego car's path. Another pedestrian stands just beyond the van at the lane edge and may enter the ego lane. A no-parking sign is visible on the left storefronts.", "hazard_reasoning": "There is a white van that is in the ego lane and has stopped, in front of the ego car, because the driver is talking to a pedestrian. The van blocks the driving lane and could force the ego-vehicle to swerve or collide with the pedestrian, so the driver should manoeuvre around the stopped van carefully."}
{"id": "train_04369", "split": "train", "clip_key": "2020-0220-102630_089290_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "089290"}, "frames": ["2020-0220-102630_089290_movie_t-3.jpg", "2020-0220-102630_089290_movie_t-2.jpg", "2020-0220-102630_089290_movie_t-1.jpg", "2020-0220-102630_089290_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop promptly to avoid rear-ending the stopped vehicle.", "environment_perception": "An urban multilane arterial with two same-direction lanes runs beside a metal barrier and a gas station; the pavement is dry and smooth, and traffic is heavy and slow. A yellow sedan directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle in place. In the adjacent left lane, a gray box truck slightly ahead rolls to a stop with the queue, reducing the available gap beside the ego car. Farther ahead in that left lane, a green city bus inches forward with the line of vehicles, reinforcing the jam and limiting progress. No oncoming traffic or active signals are visible.", "hazard_reasoning": "There's a yellow sedan that has stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The sedan's stopped position signals congestion, so stopping promptly prevents a rear-end collision."}
{"id": "train_04370", "split": "train", "clip_key": "2020-0210-101957_073466_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "073466"}, "frames": ["2020-0210-101957_073466_movie_t-3.jpg", "2020-0210-101957_073466_movie_t-2.jpg", "2020-0210-101957_073466_movie_t-1.jpg", "2020-0210-101957_073466_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with single narrow lanes and no median runs past apartments and a convenience store; the pavement is good and traffic is light. A white mini truck ahead in the ego lane drives away from the camera and continues straight across a zebra crossing, directly setting the ego car's pace. A cyclist farther ahead to the right travels in the same direction along the green roadside strip, remaining near the edge and outside the ego lane. A distant oncoming car approaches in its lane beyond the crossing without affecting the ego vehicle. A blue pedestrian crossing sign is visible by the crosswalk.", "hazard_reasoning": "There is a white truck driving in front of the ego car, away from the ego car. The driver should remain aware of this vehicle as its sudden braking or speed changes could require timely reactions."}
{"id": "train_04371", "split": "train", "clip_key": "2020-0228-102841_080793_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "080793"}, "frames": ["2020-0228-102841_080793_movie_t-3.jpg", "2020-0228-102841_080793_movie_t-2.jpg", "2020-0228-102841_080793_movie_t-1.jpg", "2020-0228-102841_080793_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy, mostly stopped traffic; the ego car travels in a center same-direction lane marked by yellow lines and chevrons. A red motorcycle is stopped directly in front of the ego vehicle because congestion blocks the way, constraining the ego's pace. Just ahead in the same lane, a small yellow box truck also sits stationary, forming the queue the motorcycle waits behind and further blocking the path. In the adjacent right lane, a silver minivan and other cars creep forward while another motorcycle filters between vehicles along the lane line and may pass ahead of the ego lane. No oncoming traffic is visible.", "hazard_reasoning": "There is a red motorcycle stopped in front of the ego car because of traffic congestion ahead. The driver should stop to avoid collision with the stationary motorcycle and the queue of vehicles."}
{"id": "train_04372", "split": "train", "clip_key": "2020-0225-102455_074062_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "074062"}, "frames": ["2020-0225-102455_074062_movie_t-3.jpg", "2020-0225-102455_074062_movie_t-2.jpg", "2020-0225-102455_074062_movie_t-1.jpg", "2020-0225-102455_074062_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop promptly for red light", "environment_perception": "An urban arterial in a dense city setting has three same-direction lanes, no physical median, and dry, well-marked pavement; traffic is heavy and slow. A white van directly ahead in the ego lane slows and comes to a stop for a red traffic light, constraining the ego vehicle's pace. A large box truck just ahead in the left lane creeps forward in the queue, remaining alongside without signaling a merge. A black taxi in the right lane rolls slowly past the ego car toward the junction but stays in its lane. A pedestrian overpass spans the roadway, and the signal ahead shows red.", "hazard_reasoning": "There is a white van slowing in front of the ego car, in the ego lane, because of a red traffic light. The van's deceleration indicates an imminent stop at the red light, so the driver must stop promptly for red light to avoid a collision."}
{"id": "train_04373", "split": "train", "clip_key": "2020-0205-103411_087941_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "087941"}, "frames": ["2020-0205-103411_087941_movie_t-3.jpg", "2020-0205-103411_087941_movie_t-2.jpg", "2020-0205-103411_087941_movie_t-1.jpg", "2020-0205-103411_087941_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes per direction and a solid orange centerline has smooth pavement; traffic in the ego direction is heavy and slow, while oncoming flow to the right is light. A white car immediately ahead in the ego lane is stopped due to congestion, holding the ego vehicle. In the adjacent left lane, a white wagon and several cars queue and creep forward alongside, limiting options to pass. Farther ahead in the same lane, a large dump truck waits in the line, reinforcing the stoppage.", "hazard_reasoning": "There is a white SUV stopped in the ego lane, because of traffic congestion ahead. The driver should stop now to maintain a safe following distance and avoid colliding with the halted vehicle."}
{"id": "train_04374", "split": "train", "clip_key": "titan_clip_789_000096_movie", "source": {"subset": "titan", "scenario": "clip_789", "frame": "000096"}, "frames": ["titan_clip_789_000096_movie_t-3.jpg", "titan_clip_789_000096_movie_t-2.jpg", "titan_clip_789_000096_movie_t-1.jpg", "titan_clip_789_000096_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane per direction runs between brick walls, trees, and bollards; the pavement looks smooth and traffic is light. Ahead in the ego lane, a white van drives away from the ego car as traffic ahead is moving, gradually opening the gap. In the oncoming lane to the right, two cars approach at a steady pace, the nearer black car close to the center line as it passes opposite the ego path. On the right sidewalk near a gated entrance, two pedestrians stand behind the bollards and remain on the sidewalk.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car, because traffic ahead is moving. The driver should follow the vehicle ahead to maintain safe spacing in case of sudden braking by traffic."}
{"id": "train_04375", "split": "train", "clip_key": "titan_clip_253_000018_movie", "source": {"subset": "titan", "scenario": "clip_253", "frame": "000018"}, "frames": ["titan_clip_253_000018_movie_t-3.jpg", "titan_clip_253_000018_movie_t-2.jpg", "titan_clip_253_000018_movie_t-1.jpg", "titan_clip_253_000018_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban neighborhood scene on a narrow two-way street by a small park; the road has one lane each way, no median, patched pavement, and light traffic with no moving vehicles ahead. On the left near the corner, a man walks along the ramped sidewalk toward the curb and slows as he nears the edge, where he may step into the roadway. On the right at the corner, a worker pushes a loaded handcart on the sidewalk beside the vehicle path, proceeding close to the curb. A pink delivery truck stands stopped at the right curb at the junction, reducing lane width and blocking the view into the side street. A convex roadside mirror above the corner aids visibility.", "hazard_reasoning": "Although no immediate caption is provided, the convex mirror and stone wall can obscure pedestrians entering the roadway. Drivers should be aware of potential unseen pedestrians when navigating this corner and adjust their behavior accordingly."}
{"id": "train_04376", "split": "train", "clip_key": "2020-0220-151845_033524_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "033524"}, "frames": ["2020-0220-151845_033524_movie_t-3.jpg", "2020-0220-151845_033524_movie_t-2.jpg", "2020-0220-151845_033524_movie_t-1.jpg", "2020-0220-151845_033524_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with good pavement and chevroned guidance where lanes split; traffic is moderate and generally slow. Directly ahead in the ego lane, a red-and-yellow truck slows and the ego car follows at its pace. To the right, a silver van in the adjacent lane travels slightly ahead at low speed, remaining in its lane and not merging. Farther ahead in the right lane, another flatbed truck continues steadily away. A traffic signal structure is visible ahead beneath the viaduct, framing the approach to the next intersection.", "hazard_reasoning": "There is a red and yellow truck slowing in front of the ego car, in the ego lane. You should slow down to maintain a safe following distance because the truck's deceleration may be unexpected."}
{"id": "train_04377", "split": "train", "clip_key": "titan_clip_452_000018_movie", "source": {"subset": "titan", "scenario": "clip_452", "frame": "000018"}, "frames": ["titan_clip_452_000018_movie_t-3.jpg", "titan_clip_452_000018_movie_t-2.jpg", "titan_clip_452_000018_movie_t-1.jpg", "titan_clip_452_000018_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck on the right side", "environment_perception": "An urban narrow two-way street with no centerline runs between shops and midrise buildings; the pavement is smooth and traffic is light. A white truck approaches ahead on the right side of the road, driving toward the ego vehicle in the oncoming lane. On the right curb slightly ahead, a brown truck is parked in a small bay with its rear door open, narrowing space near that side. On the left sidewalk a pedestrian walks away from the camera along the storefronts.", "hazard_reasoning": "There is a white truck driving on the right side of the road, towards the ego car. The parked truck obstructs the right side view, so be aware of potential hazards emerging from that direction."}
{"id": "train_04378", "split": "train", "clip_key": "2020-0129-144857_088283_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "088283"}, "frames": ["2020-0129-144857_088283_movie_t-3.jpg", "2020-0129-144857_088283_movie_t-2.jpg", "2020-0129-144857_088283_movie_t-1.jpg", "2020-0129-144857_088283_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs on smooth, dry pavement, separated from oncoming traffic by a metal fence median; traffic is light to moderate and steady. A dark van travels ahead in the ego lane, continuing straight and setting the immediate pace. In the adjacent left lane slightly ahead, a silver hatchback proceeds straight past a side street, roughly keeping pace and occupying the space for a potential lane change. On the opposite carriageway beyond the fence, a white truck approaches as oncoming traffic. Overhead guide signs appear ahead, with no signal visible and no unusual obstacles.", "hazard_reasoning": "There are no potential hazards in view, so you can maintain your current speed safely."}
{"id": "train_04379", "split": "train", "clip_key": "2020-0203-114632_045827_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "045827"}, "frames": ["2020-0203-114632_045827_movie_t-3.jpg", "2020-0203-114632_045827_movie_t-2.jpg", "2020-0203-114632_045827_movie_t-1.jpg", "2020-0203-114632_045827_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the van until traffic clears.", "environment_perception": "An urban arterial with at least two lanes in the ego direction has dry, well-kept pavement and heavy, slow?oving traffic. A silver van is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle. In the adjacent right lane, a white box truck ahead rolls forward slowly in the queue, continuing straight past the stopped van. Farther ahead, other cars in the right lane also creep forward, keeping the flow bunched. Parked vehicles line the left curb beside the ego car and remain static, narrowing the shoulder.", "hazard_reasoning": "There is a silver van stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle and wait until the congestion clears."}
{"id": "train_04380", "split": "train", "clip_key": "titan_clip_134_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_134_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_134_000198_movie_t-3_augB1.jpg", "titan_clip_134_000198_movie_t-2_augB1.jpg", "titan_clip_134_000198_movie_t-1_augB1.jpg", "titan_clip_134_000198_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial street with a narrow two-way road has no median and textured paving, and traffic is light and slow near an unsignalized zebra crossing. A silver hatchback ahead in the ego lane eases toward the crosswalk and sets the ego car's pace. A pedestrian wearing a white shirt, black pants, and a cap holds a sign in the left lane just before the crosswalk and walks away from the ego vehicle, remaining in the ego path. Several other pedestrians wait near the curbs by the crosswalk and one walks along the right sidewalk, but none enter the roadway. A small white van stands at the right curb beyond the crosswalk, narrowing space near the corner, and a yield sign is posted on the left.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and a cap, holding a sign, standing in the left lane, and walking away from the ego car. The pedestrian is crossing in the lane near the parked van, creating a collision risk if the driver does not adjust their path."}
{"id": "train_04381", "split": "train", "clip_key": "titan_clip_102_000576_movie", "source": {"subset": "titan", "scenario": "clip_102", "frame": "000576"}, "frames": ["titan_clip_102_000576_movie_t-3.jpg", "titan_clip_102_000576_movie_t-2.jpg", "titan_clip_102_000576_movie_t-1.jpg", "titan_clip_102_000576_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street with a narrow single lane paved in bricks has no divider and carries light, slow traffic under an overhead walkway. Ahead in the middle, a pedestrian wearing gray pants crosses from the right storefront area into the lane, entering the ego vehicle's path and constraining speed. Slightly farther ahead on the right edge, a white van sits by the curb and narrows the available lane. On the left near green cones, another pedestrian walks along the roadway edge and could drift into the lane.", "hazard_reasoning": "There is a pedestrian wearing gray pant in the middle of the road as he crosses the street towards the right side. Since this pedestrian may step into the vehicle path and could be obscured by the van, you should slow down to maintain safe control."}
{"id": "train_04382", "split": "train", "clip_key": "2020-0213-143552_065288_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "065288"}, "frames": ["2020-0213-143552_065288_movie_t-3.jpg", "2020-0213-143552_065288_movie_t-2.jpg", "2020-0213-143552_065288_movie_t-1.jpg", "2020-0213-143552_065288_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes runs between mid-rise buildings, with a trimmed hedge median and smooth pavement; traffic flows at a moderate, steady pace. A white box truck ahead in the ego lane moves away, accelerating under a green signal and opening a growing gap from the ego car. In the adjacent left lane, a dark hatchback slightly ahead continues straight and gradually pulls ahead without impeding the ego lane. On the far side of the median, a white minivan travels in the opposite direction and remains separated from the ego path.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because of a green traffic light. You should follow the vehicle ahead to maintain a safe headway and keep up with the traffic flow."}
{"id": "train_04383", "split": "train", "clip_key": "2020-0206-101736_089534_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "089534"}, "frames": ["2020-0206-101736_089534_movie_t-3.jpg", "2020-0206-101736_089534_movie_t-2.jpg", "2020-0206-101736_089534_movie_t-1.jpg", "2020-0206-101736_089534_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision ahead", "environment_perception": "An urban arterial with two lanes in the ego direction runs beside a hedge median that separates opposing traffic; the pavement is dry and traffic is heavy with a stopped queue. Directly ahead, a white flatbed truck in the ego lane is stopped, holding the ego vehicle because of congestion ahead. In the adjacent left lane, a white box truck slightly forward is also stopped, preventing an easy pass. Farther ahead in the left lane, several passenger cars wait in a line toward the junction. Overhead traffic lights are visible at the intersection ahead.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The truck's halt due to congestion requires the driver to stop to avoid a rear-end collision."}
{"id": "train_04384", "split": "train", "clip_key": "2020-0205-103411_058241_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "058241"}, "frames": ["2020-0205-103411_058241_movie_t-3.jpg", "2020-0205-103411_058241_movie_t-2.jpg", "2020-0205-103411_058241_movie_t-1.jpg", "2020-0205-103411_058241_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial with smooth pavement runs between tall buildings, with a raised median and guardrail on the right; traffic is light to moderate as the road gently rises. A gray box truck ahead in the ego lane continues straight and gradually pulls away, effectively setting the ego car's pace. In the left lane near the curb, a small delivery truck and a silver van move slowly or pause, keeping that lane slower. On the separated roadway to the right, an oncoming white car passes behind the guardrail without interacting. Barriers and fencing line the right edge but stay outside the travel lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04385", "split": "train", "clip_key": "titan_clip_748_000588_movie", "source": {"subset": "titan", "scenario": "clip_748", "frame": "000588"}, "frames": ["titan_clip_748_000588_movie_t-3.jpg", "titan_clip_748_000588_movie_t-2.jpg", "titan_clip_748_000588_movie_t-1.jpg", "titan_clip_748_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban backstreet with a single narrow two-way carriageway and no median runs between buildings; the asphalt is dry and intact, and traffic is light while a roadside construction site narrows the left edge. A red construction truck stands ahead slightly left within the lane beside cones and a boom lift, constraining the approach and keeping the path tight. On the right edge near the ego vehicle, a pedestrian in a blue shirt and black pants carrying a bag walks toward the camera along the curb and may step into the lane. Farther ahead, several pedestrians cross the roadway midblock, occupying the center and influencing speed. A blue no-parking sign is posted on the left.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, wearing black pants, and carrying a bag, who is walking on the right side of the road, toward the ego car. The pedestrian is approaching the vehicle's path, so the driver should be aware to prevent a collision."}
{"id": "train_04386", "split": "train", "clip_key": "titan_clip_599_000036_movie", "source": {"subset": "titan", "scenario": "clip_599", "frame": "000036"}, "frames": ["titan_clip_599_000036_movie_t-3.jpg", "titan_clip_599_000036_movie_t-2.jpg", "titan_clip_599_000036_movie_t-1.jpg", "titan_clip_599_000036_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban shopping street with a single shared lane and smooth pavement has no median, and traffic is light with no motor vehicles throughout. On the left, a pedestrian in a green shirt with a backpack walks away from the ego vehicle along the curb, maneuvering around parked bicycles that protrude into the lane. Ahead in the center of the lane, a man in a dark suit walks toward the ego vehicle, occupying the path and reducing the available space. Farther ahead, another pedestrian continues away along the left side near the storefronts. Numerous bicycles are parked along both sides, some encroaching on the roadway and forming minor obstacles.", "hazard_reasoning": "A pedestrian wearing a green shirt and backpack is walking on the left side of the road, away from the ego car, because she is maneuvering around parked bicycles. The driver should maneuver carefully around her to avoid a collision and ensure pedestrian safety."}
{"id": "train_04387", "split": "train", "clip_key": "titan_clip_332_000300_movie", "source": {"subset": "titan", "scenario": "clip_332", "frame": "000300"}, "frames": ["titan_clip_332_000300_movie_t-3.jpg", "titan_clip_332_000300_movie_t-2.jpg", "titan_clip_332_000300_movie_t-1.jpg", "titan_clip_332_000300_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban shopping street with a single narrow shared lane paved with interlocking bricks and no centerline or median. Traffic is light with no other vehicles, and the ego car proceeds slowly through a pedestrian-dense area. On the left edge ahead, two pedestrians walk toward the camera close to the vehicle's path, limiting space in the lane. In the center ahead, a pair of pedestrians approach along the middle of the lane and gradually converge toward the ego vehicle, constraining its pace. On the right side, a pedestrian wearing a gray shirt and black pants carrying a handbag walks toward the ego car and may enter the lane.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black pants, carrying a handbag, walking on the right side of the road, towards the ego car. The pedestrian is approaching the vehicle's path and could step in front of it, so the driver should manoeuvre carefully around them."}
{"id": "train_04388", "split": "train", "clip_key": "2020-0213-143552_028859_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "028859"}, "frames": ["2020-0213-143552_028859_movie_t-3.jpg", "2020-0213-143552_028859_movie_t-2.jpg", "2020-0213-143552_028859_movie_t-1.jpg", "2020-0213-143552_028859_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked vehicle ahead", "environment_perception": "An urban two-way street with left-side driving runs straight toward a small cross street, the pavement smooth and traffic light. Ahead on the left, a silver hatchback is parked partly in the ego lane, constraining the path past it. At the near right edge, a cyclist moves slowly along the sidewalk parallel to the road, remaining outside the lane. On the oncoming side farther ahead, a black van is parked at the right curb beyond a utility pole and does not intrude into the roadway. A small car continues straight in the distance in the same direction.", "hazard_reasoning": "There is a silver hatchback parked on the left side of the road intersecting with the ego lane. This parked vehicle may obstruct the lane and reduce maneuvering space, so the driver should be aware of its presence."}
{"id": "train_04389", "split": "train", "clip_key": "2020-0207-151349_043593_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "043593"}, "frames": ["2020-0207-151349_043593_movie_t-3.jpg", "2020-0207-151349_043593_movie_t-2.jpg", "2020-0207-151349_043593_movie_t-1.jpg", "2020-0207-151349_043593_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with smooth asphalt and a narrow curb-and-bollard divider on the left; traffic is moderate and bunches into a queue at a signal. A white sedan directly ahead in the ego lane is stopped for a red light, holding the ego vehicle in place. In the adjacent right lane, a white minivan slightly ahead is also stopped in the queue, preventing an easy merge. Farther ahead under the overpass, several vehicles line up toward the intersection. A red traffic signal is visible beyond the queue.", "hazard_reasoning": "There is a white Sedan stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver should stop to avoid colliding with the stationary vehicle and comply with the red signal."}
{"id": "train_04390", "split": "train", "clip_key": "2020-0129-105040_090744_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "090744"}, "frames": ["2020-0129-105040_090744_movie_t-3.jpg", "2020-0129-105040_090744_movie_t-2.jpg", "2020-0129-105040_090744_movie_t-1.jpg", "2020-0129-105040_090744_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided boulevard with two lanes in each direction and a landscaped median stretches ahead, the pavement smooth and dry, with light traffic flowing steadily. A white truck ahead in the ego lane drives away from the camera at a steady pace, subtly constraining the ego vehicle's speed. A white hatchback slightly ahead in the adjacent left lane continues straight at a similar speed and remains parallel to the ego path. Oncoming cars travel in the opposite carriageway beyond the median and pass without interaction. A curbed island with bushes borders the right edge near the ego vehicle, but no obstacles intrude into the lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04391", "split": "train", "clip_key": "2020-0220-102630_032897_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "032897"}, "frames": ["2020-0220-102630_032897_movie_t-3.jpg", "2020-0220-102630_032897_movie_t-2.jpg", "2020-0220-102630_032897_movie_t-1.jpg", "2020-0220-102630_032897_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop to let pedestrians cross safely.", "environment_perception": "An urban, two-way single-lane road approaches a signalized intersection with wide zebra crosswalks; the pavement looks smooth and traffic is light. The ego vehicle waits at the stop line. A scooter with a rear box rides across the foreground from left to right on the crosswalk, passing directly through the ego lane and momentarily blocking the path. Two pedestrians in purple coats, one with a backpack and another carrying a handbag, walk left to right across the same crosswalk ahead, potentially continuing into the ego lane. A small truck is stopped ahead in the same direction at the intersection. Overhead traffic lights are visible, and a posted 30 sign appears on the left.", "hazard_reasoning": "There are two pedestrians wearing a purple coat and a backpack, carrying a handbag, and walking across a crosswalk from left to right. The driver must stop to allow pedestrians to safely cross at the intersection and prevent collisions."}
{"id": "train_04392", "split": "train", "clip_key": "titan_clip_1195_000336_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1195_000336_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1195_000336_movie_t-3_augB1.jpg", "titan_clip_1195_000336_movie_t-2_augB1.jpg", "titan_clip_1195_000336_movie_t-1_augB1.jpg", "titan_clip_1195_000336_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian ahead", "environment_perception": "A narrow urban shopping street with a single shared lane and no divider stretches ahead; the stone-paved surface looks intact, and vehicle traffic is light with no oncoming cars visible. In the middle of the road, a woman wearing a white T-shirt and a pink skirt walks toward the ego vehicle, occupying the travel lane. On the right edge beside storefronts, a worker pushes a green handcart slowly, the cart protruding into the lane and narrowing the available space. Farther ahead, several pedestrians move along the center of the street while others stand near shop entrances on both sides, close to the curb line. A convex safety mirror is mounted on the left corner.", "hazard_reasoning": "There is a woman wearing a white t-shirt and a pink skirt, and walking towards the ego car, in the middle of the road. The driver should yield to her because she is walking directly into the vehicle's path and may not be able to clear the way in time."}
{"id": "train_04393", "split": "train", "clip_key": "titan_clip_1340_000072_movie", "source": {"subset": "titan", "scenario": "clip_1340", "frame": "000072"}, "frames": ["titan_clip_1340_000072_movie_t-3.jpg", "titan_clip_1340_000072_movie_t-2.jpg", "titan_clip_1340_000072_movie_t-1.jpg", "titan_clip_1340_000072_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "be aware of exiting passenger", "environment_perception": "An urban commercial street is seen with smooth pavement, a zebra crossing in the foreground, and no median; traffic is light. Along the left curb ahead, a white van is parked while someone gets out, occupying part of the lane. A pedestrian steps into the crosswalk from the left close to the camera and walks to the right across the ego vehicle's path, likely controlling the approach speed. Near the left edge of the crosswalk, a cyclist straddles a bicycle and begins to roll forward across, potentially entering the lane. Other pedestrians move along the right sidewalk, and no other moving vehicles are visible in the same direction.", "hazard_reasoning": "A white van parked on the left side of the road because someone is getting off from it. The passenger exiting the parked van may step into the vehicle's path, so the driver should be aware of the exiting passenger to avoid collision."}
{"id": "train_04394", "split": "train", "clip_key": "titan_clip_1166_000510_movie", "source": {"subset": "titan", "scenario": "clip_1166", "frame": "000510"}, "frames": ["titan_clip_1166_000510_movie_t-3.jpg", "titan_clip_1166_000510_movie_t-2.jpg", "titan_clip_1166_000510_movie_t-1.jpg", "titan_clip_1166_000510_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with one lane each direction and no median shows worn pavement and moderate, slow-moving traffic due to curbside loading. Ahead along the left edge of the ego lane, a delivery truck is stopped while a person pushes a blue handcart beside its tail, encroaching into the lane and narrowing the path. Farther ahead in the same lane, another small box truck stands partly in the roadway, prompting the ego vehicle to slow. In the oncoming lane to the right, a white minivan approaches and continues past, limiting how far right the ego car can move around the stopped vehicles.", "hazard_reasoning": "There is a silver SUV slowing in the ego lane, in front of the ego car. The SUV's deceleration may require the driver to brake suddenly, so the driver should adjust speed to keep a safe following distance."}
{"id": "train_04395", "split": "train", "clip_key": "2020-0127-132751_037499_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "037499"}, "frames": ["2020-0127-132751_037499_movie_t-3.jpg", "2020-0127-132751_037499_movie_t-2.jpg", "2020-0127-132751_037499_movie_t-1.jpg", "2020-0127-132751_037499_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with two lanes in the ego direction runs through dense buildings, with a rail-guarded median on the right separating oncoming traffic; the fresh pavement looks smooth and traffic is moderate, moving steadily under a green signal ahead. A black minivan directly ahead in the ego lane moves away as the light remains green, drawing the platoon forward. A white box truck slightly ahead in the left lane proceeds straight at a similar pace, partly obscuring the view of the intersection. A small white hatchback to the left advances alongside and then edges ahead while staying in its lane. On the opposite side of the divider, a white van approaches in the oncoming lane to the right.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04396", "split": "train", "clip_key": "2020-0214-145407_010460_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "010460"}, "frames": ["2020-0214-145407_010460_movie_t-3.jpg", "2020-0214-145407_010460_movie_t-2.jpg", "2020-0214-145407_010460_movie_t-1.jpg", "2020-0214-145407_010460_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A dense urban street with two same-direction lanes approaches a signalized intersection; the ego vehicle travels in the left lane beside roadworks that narrow the right side, and the pavement appears patched with plates. Traffic is light and queued at the light. A gray minivan directly ahead in the ego lane is stopped for a red signal at the crosswalk, holding the ego car. Two motorbikes wait at the left curb near the corner, adjacent to the lane. Several pedestrians stand on the sidewalks near storefronts and at the far corner without entering the roadway. The overhead traffic signal shows red, and construction barriers and cones line the right side, creating a constrained corridor.", "hazard_reasoning": "There is a gray minivan stopped in front of the ego car in the ego lane, because of a red traffic light. Since the minivan ahead is halted at the red light, you should stop to avoid colliding with it."}
{"id": "train_04397", "split": "train", "clip_key": "2020-0207-101955_001811_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "001811"}, "frames": ["2020-0207-101955_001811_movie_t-3.jpg", "2020-0207-101955_001811_movie_t-2.jpg", "2020-0207-101955_001811_movie_t-1.jpg", "2020-0207-101955_001811_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of stopped van ahead", "environment_perception": "An urban commercial street with two same-direction lanes, no median, smooth pavement, and light traffic. A black van ahead in the right lane travels steadily away and does not affect the ego lane. Pedestrians on the left sidewalk walk past shop entrances behind a chain barrier and do not approach the roadway. A no-stopping sign is posted on the left.", "hazard_reasoning": "There is a white van stopped at the left side of the road. This stopped vehicle may require the driver to slow down or change lanes, so the driver should be aware to maintain safety."}
{"id": "train_04398", "split": "train", "clip_key": "2020-0218-103119_002936_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002936"}, "frames": ["2020-0218-103119_002936_movie_t-3.jpg", "2020-0218-103119_002936_movie_t-2.jpg", "2020-0218-103119_002936_movie_t-1.jpg", "2020-0218-103119_002936_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming vehicle.", "environment_perception": "An urban boulevard with multiple lanes in each direction runs straight between tall buildings, with a striped buffer and low hedges as the median; the pavement appears smooth and traffic is light and steady. Ahead in the ego lane, a black car proceeds at a constant speed and effectively sets the pace. In the oncoming lanes to the right, a light van approaches and a black sedan drives toward the ego car, both remaining in their lanes and separated from the ego by the median. A cyclist rides along the fenced left edge beside the roadway, moving parallel and not entering the traffic lanes. Bright sun glare from the upper left slightly washes the view.", "hazard_reasoning": "There is a black sedan driving in the oncoming lane, toward the ego car. This oncoming vehicle poses a head-on collision risk, so you should yield."}
{"id": "train_04399", "split": "train", "clip_key": "titan_clip_750_000342_movie", "source": {"subset": "titan", "scenario": "clip_750", "frame": "000342"}, "frames": ["titan_clip_750_000342_movie_t-3.jpg", "titan_clip_750_000342_movie_t-2.jpg", "titan_clip_750_000342_movie_t-1.jpg", "titan_clip_750_000342_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian", "environment_perception": "An urban residential two-way road with no centerline is narrow but smoothly paved, and traffic is light with no moving vehicles besides the ego. A pedestrian wearing a black shirt and carrying a backpack walks away from the ego along the left edge of the road, close to the travel path and potentially constraining pace. A blue van is parked on the right near the foreground, encroaching slightly into the lane and narrowing the passage. No oncoming vehicles appear along the straight, and no salient traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a backpack, and walking away from the ego car, on the left side of the road. The driver should yield because the pedestrian could step onto the crosswalk unexpectedly."}
{"id": "train_04400", "split": "train", "clip_key": "2020-0203-154554_058684_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "058684"}, "frames": ["2020-0203-154554_058684_movie_t-3.jpg", "2020-0203-154554_058684_movie_t-2.jpg", "2020-0203-154554_058684_movie_t-1.jpg", "2020-0203-154554_058684_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for the stopped vehicle ahead", "environment_perception": "An urban two-way road with two lanes in the ego direction runs between buildings and trees, separated from oncoming traffic by a wide painted median; the dry pavement carries moderate flow that compresses to a stop. A gray van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego car. A beige minivan ahead-left in the curb lane creeps forward past the van and could merge ahead of the ego vehicle. On the right beyond the median, a silver sedan approaches in the oncoming lane at a steady pace.", "hazard_reasoning": "There is a gray van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop for the halted vehicle to maintain a safe distance and prevent a collision."}
{"id": "train_04401", "split": "train", "clip_key": "2020-0226-140503_030989_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "030989"}, "frames": ["2020-0226-140503_030989_movie_t-3.jpg", "2020-0226-140503_030989_movie_t-2.jpg", "2020-0226-140503_030989_movie_t-1.jpg", "2020-0226-140503_030989_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with the stopped vehicle.", "environment_perception": "An urban two-way street with one narrow lane per direction and no median appears wet and slightly misty, and traffic in the ego lane is heavy and slow in a short queue. A white compact car directly ahead in the ego lane is stopped or creeping because of traffic congestion ahead, controlling the ego vehicle's pace. A silver sedan sits along the left curb encroaching into the lane near the ego car, narrowing the path while remaining parked. In the opposing lane, a dark sedan and several other oncoming cars pass steadily, occupying the only available space and limiting maneuvering. A blue overhead guide sign is visible.", "hazard_reasoning": "There is a gray sedan stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid collision with the stopped vehicle."}
{"id": "train_04402", "split": "train", "clip_key": "titan_clip_844_000186_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_844_000186_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_844_000186_movie_t-3_augB1.jpg", "titan_clip_844_000186_movie_t-2_augB1.jpg", "titan_clip_844_000186_movie_t-1_augB1.jpg", "titan_clip_844_000186_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban residential street with left-side travel narrows to a single two-way lane and rises gently uphill; the asphalt is patched but clear, and traffic is light with no vehicles ahead or oncoming. Ahead, a pedestrian in a white shirt walking a dog crosses from right to left directly in front of the ego vehicle, moving steadily across the ego lane and occupying its path. No traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking a dog, crossing the street from right to left, on front of the ego-car. The pedestrian is entering the lane ahead, so the driver should slow down to ensure safe passage and avoid a collision."}
{"id": "train_04403", "split": "train", "clip_key": "titan_clip_276_000384_movie", "source": {"subset": "titan", "scenario": "clip_276", "frame": "000384"}, "frames": ["titan_clip_276_000384_movie_t-3.jpg", "titan_clip_276_000384_movie_t-2.jpg", "titan_clip_276_000384_movie_t-1.jpg", "titan_clip_276_000384_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one narrow lane each way has smooth pavement and light traffic. Ahead in the ego lane, a white flatbed truck slows and reverses into a parking space on the left from the middle of the road, briefly occupying the lane and setting the ego car's pace. Farther ahead near the centerline, a bicyclist moves straight in the same direction while keeping to the right side and away from the ego lane. Parked vehicles line both sides, including a black minivan close on the left, narrowing lateral clearance.", "hazard_reasoning": "There is a white truck reversing into a parking space on the left side from the middle of the road in front of the ego car. The truck's unexpected reversing maneuver across the lane could lead to a collision if the driver does not stop immediately."}
{"id": "train_04404", "split": "train", "clip_key": "2020-0227-153144_016648_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "016648"}, "frames": ["2020-0227-153144_016648_movie_t-3.jpg", "2020-0227-153144_016648_movie_t-2.jpg", "2020-0227-153144_016648_movie_t-1.jpg", "2020-0227-153144_016648_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction and a planted median has smooth pavement and traffic that grows from moderate to heavy as a queue forms near a signalized intersection ahead. A white hatchback directly ahead in the ego lane slows because of congestion further up the road, setting the ego car's pace. A black sedan waits by the left curb slightly ahead, angled toward the lane and edging forward, so it may enter the ego lane. In the adjacent right lane, a dark truck travels slightly ahead at a similar speed, limiting a rightward lane change. Oncoming traffic flows on the far side of the median.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead on the road. The white hatchback is reducing speed due to congestion ahead, so you should slow down to maintain a safe following distance."}
{"id": "train_04405", "split": "train", "clip_key": "2020-0220-102630_035743_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "035743"}, "frames": ["2020-0220-102630_035743_movie_t-3.jpg", "2020-0220-102630_035743_movie_t-2.jpg", "2020-0220-102630_035743_movie_t-1.jpg", "2020-0220-102630_035743_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with two or more lanes per direction has no physical median; the pavement is dry and slightly worn, and traffic is moderate as the ego car proceeds in the left lane. A black hatchback directly ahead in the ego lane slows, constraining the ego vehicle's pace. Slightly farther ahead, a white car continues straight in the adjacent right same-direction lane at a steadier speed without entering the ego lane. On the opposite side, several cars approach in their oncoming lanes, remaining separated by the center line. A roadside sign on the left posts 40 km/h.", "hazard_reasoning": "There is a black hatchback slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid colliding with the decelerating vehicle ahead."}
{"id": "train_04406", "split": "train", "clip_key": "2020-0218-103119_003928_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "003928"}, "frames": ["2020-0218-103119_003928_movie_t-3.jpg", "2020-0218-103119_003928_movie_t-2.jpg", "2020-0218-103119_003928_movie_t-1.jpg", "2020-0218-103119_003928_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A quiet urban two-way street lined with bare trees has one lane in each direction and no median, with smooth pavement and light traffic. The ego-vehicle proceeds in the left lane. An oncoming white mini van approaches along the right side in its lane and passes by with clear separation. Farther ahead, an oncoming minibus waits near the right curb facing the ego-vehicle, remaining in the opposing lane and not affecting the path. A pedestrian on the left sidewalk walks beside parked bicycles without stepping into the roadway. A large 30 speed marking is painted on the pavement.", "hazard_reasoning": "No visible hazards are present in the clear daytime conditions; the road is free of pedestrians, cyclists, debris, or sudden obstacles, so normal driving can continue safely."}
{"id": "train_04407", "split": "train", "clip_key": "2020-0217-144444_004781_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "004781"}, "frames": ["2020-0217-144444_004781_movie_t-3.jpg", "2020-0217-144444_004781_movie_t-2.jpg", "2020-0217-144444_004781_movie_t-1.jpg", "2020-0217-144444_004781_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with dry, smooth pavement runs between midrise buildings, the ego car proceeding in the left lane beside a fenced sidewalk used by cyclists and pedestrians; traffic is heavy and queued at a signal. A yellow sedan directly ahead in the ego lane is stopped at a red traffic light, holding the ego car. To the right, a black minivan in the adjacent lane creeps forward with the queue, limiting an immediate merge. Farther ahead in the middle lane, a small truck inches along with the line of vehicles.", "hazard_reasoning": "There is a yellow sedan stopped in front of the ego car, because of a red traffic light. This stopped vehicle indicates that traffic ahead has halted at the red signal, so the driver should stop to maintain a safe following distance and comply with the traffic signal."}
{"id": "train_04408", "split": "train", "clip_key": "titan_clip_839_000480_movie", "source": {"subset": "titan", "scenario": "clip_839", "frame": "000480"}, "frames": ["titan_clip_839_000480_movie_t-3.jpg", "titan_clip_839_000480_movie_t-2.jpg", "titan_clip_839_000480_movie_t-1.jpg", "titan_clip_839_000480_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one narrow lane per direction and double yellow centerlines runs past shops and railings, the pavement smooth and traffic light. A man in a green reflective jacket, black boots, and a helmet stands in the middle of the road ahead, signaling to direct vehicles and constraining the ego car's pace. An oncoming blue truck passes close by in the opposite lane under his guidance. A small white car ahead in the ego lane waits near the center of the road, held by the directed flow.", "hazard_reasoning": "There's a man wearing a green reflector jacket, black boots and a helmet, standing in the middle of the road, in front of the ego car, because he's directing the vehicular traffic. The driver should carefully manoeuvre around the pedestrian directing traffic to avoid a collision."}
{"id": "train_04409", "split": "train", "clip_key": "2020-0228-102841_075685_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "075685"}, "frames": ["2020-0228-102841_075685_movie_t-3.jpg", "2020-0228-102841_075685_movie_t-2.jpg", "2020-0228-102841_075685_movie_t-1.jpg", "2020-0228-102841_075685_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane road approaches a wide intersection, with three same-direction lanes marked by paint and dry, even pavement; traffic is light to moderate and moves steadily. A black van ahead in the center ego lane drives away as the flow ahead starts moving, creating distance from the ego vehicle. A white sedan in the right lane accelerates through the intersection slightly ahead of the van. In the left lane, a white minivan creeps at the crosswalk in the left-turn lane, keeping that lane slow. Directional arrows are clear on the pavement, and roadside route signs are visible.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car, because traffic ahead is moving. The black van may brake suddenly if traffic slows, so the driver should follow the vehicle ahead to maintain a safe distance."}
{"id": "train_04410", "split": "train", "clip_key": "2020-0225-102455_011270_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "011270"}, "frames": ["2020-0225-102455_011270_movie_t-3.jpg", "2020-0225-102455_011270_movie_t-2.jpg", "2020-0225-102455_011270_movie_t-1.jpg", "2020-0225-102455_011270_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with the stopped truck.", "environment_perception": "An urban two-lane road curves right beside a guardrail, with a red-colored lane on the left and smooth pavement; traffic is heavy and slow. A brown dump truck is stopped directly ahead in the ego lane because of congestion ahead, holding the ego vehicle stationary. Farther along the rightward curve, a queue of same-direction vehicles is visible, reinforcing the backup. A yellow service vehicle sits on the right shoulder, and the guardrail and narrow gutter on that side constrain maneuvering space.", "hazard_reasoning": "There is a brown truck stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary truck blocking the lane, ensuring safety."}
{"id": "train_04411", "split": "train", "clip_key": "2020-0203-154554_080213_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "080213"}, "frames": ["2020-0203-154554_080213_movie_t-3.jpg", "2020-0203-154554_080213_movie_t-2.jpg", "2020-0203-154554_080213_movie_t-1.jpg", "2020-0203-154554_080213_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with multiple lanes runs between mid-rise buildings and leafless trees; the pavement is dry and the overall flow is heavy, forming a slow queue in the ego direction under low sun glare. A white sedan directly ahead in the ego lane slows because of congestion ahead, constraining the ego car's pace. A dark sedan slightly ahead to the left in the adjacent same-direction lane also creeps forward, limiting room to change lanes. Oncoming traffic includes a white minivan approaching to the right of the centerline and continuing straight without interacting.", "hazard_reasoning": "There is a white sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should follow the vehicle ahead to maintain a safe distance in slowing traffic."}
{"id": "train_04412", "split": "train", "clip_key": "2020-0228-150133_065224_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "065224"}, "frames": ["2020-0228-150133_065224_movie_t-3.jpg", "2020-0228-150133_065224_movie_t-2.jpg", "2020-0228-150133_065224_movie_t-1.jpg", "2020-0228-150133_065224_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two lanes in our direction and a painted double white median to oncoming traffic has dry, well-kept pavement, and traffic is slow in a short queue at a signalized intersection ahead. A black sedan is stopped directly in front of the ego car in the ego lane, holding our pace as the line waits. To the left, a large box truck in the adjacent same-direction lane is also stopped slightly ahead, running parallel to the queue and partly blocking the left view. Farther ahead in our lane, a dark van waits near the junction. Overhead traffic lights are visible at the intersection.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane. Stop to avoid colliding with the stationary vehicle ahead."}
{"id": "train_04413", "split": "train", "clip_key": "2020-0214-102601_047286_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "047286"}, "frames": ["2020-0214-102601_047286_movie_t-3.jpg", "2020-0214-102601_047286_movie_t-2.jpg", "2020-0214-102601_047286_movie_t-1.jpg", "2020-0214-102601_047286_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban underpass approach with smooth pavement narrows to a single forward lane bordered by striped shoulders and guardrails, and traffic is light as the road dips beneath an overhead structure and then climbs. A white van ahead in the ego lane proceeds under the bridge and continues up the incline, subtly setting the pace. Farther ahead, another white van in the same lane moves away toward the brighter exit. On the left edge beside the lane, a white flatbed truck travels slowly alongside within a side channel and is positioned to merge, making it relevant to the ego vehicle. No traffic signals are visible, and there are no pedestrians or cyclists. The scene shows no obstacles beyond the confined walls of the underpass.", "hazard_reasoning": "The tunnel is clear and traffic is flowing smoothly, so no immediate hazards require driver warning."}
{"id": "train_04414", "split": "train", "clip_key": "titan_clip_230_000258_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_230_000258_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_230_000258_movie_t-3_augB1.jpg", "titan_clip_230_000258_movie_t-2_augB1.jpg", "titan_clip_230_000258_movie_t-1_augB1.jpg", "titan_clip_230_000258_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene is an urban shopping street with tall buildings, a narrow single-lane roadway without a divider, brick paving in good condition, and light motor traffic but heavy pedestrian presence. Ahead in the center of the lane, a pedestrian wearing a cap and backpack walks away from the ego vehicle while wheeling a bicycle, occupying the path and constraining speed. A white van stands ahead near the left edge of the lane, reducing the usable width. Another pedestrian walks toward the ego in the middle distance in the lane.", "hazard_reasoning": "There is a pedestrian wearing a cap and backpack, walking in the middle of the road with her bicycle, away from the ego car. Slow down to avoid collision, as the pedestrian is occupying the travel lane and may not clear the road promptly."}
{"id": "train_04415", "split": "train", "clip_key": "2020-0131-103016_085367_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "085367"}, "frames": ["2020-0131-103016_085367_movie_t-3.jpg", "2020-0131-103016_085367_movie_t-2.jpg", "2020-0131-103016_085367_movie_t-1.jpg", "2020-0131-103016_085367_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with two lanes in the ego direction, bordered by a left-side railing, has dry pavement and moderate, steady traffic. A small white van ahead in the ego lane cruises straight and sets the pace for the ego vehicle. Farther ahead in the adjacent right lane, a gray van continues straight at a similar speed, remaining in its lane and not affecting the ego path. A larger white van to the right comes alongside and gradually pulls ahead in the right lane, overtaking without merging.", "hazard_reasoning": "There are no visible hazards or risky behaviors in this scene, so no warning is necessary."}
{"id": "train_04416", "split": "train", "clip_key": "2020-0218-103119_022927_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "022927"}, "frames": ["2020-0218-103119_022927_movie_t-3.jpg", "2020-0218-103119_022927_movie_t-2.jpg", "2020-0218-103119_022927_movie_t-1.jpg", "2020-0218-103119_022927_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road with no physical median and smooth pavement runs between mid-rise buildings, and traffic is moderate near a signalized intersection. Ahead in the ego lane, a white box truck drives away from the ego car, maintaining distance and effectively setting the pace. Slightly farther ahead in the same lane, a white van continues straight at similar speed, following the truck and further constraining the ego vehicle's progress. To the right ahead, an oncoming silver truck moves through the intersection in its own lane, passing by without encroaching on the ego path. Traffic lights are suspended over the junction.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. Follow the vehicle ahead to prepare for the red light and stop safely."}
{"id": "train_04417", "split": "train", "clip_key": "2020-0203-114632_014733_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "014733"}, "frames": ["2020-0203-114632_014733_movie_t-3.jpg", "2020-0203-114632_014733_movie_t-2.jpg", "2020-0203-114632_014733_movie_t-1.jpg", "2020-0203-114632_014733_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A dense urban commercial street with midrise buildings lines a two-way road that has one lane in each direction divided by a solid yellow centerline; the pavement is smooth, the grade gently downhill, and traffic is light. A small white van far ahead in the ego lane moves steadily away, lightly setting the pace. Numerous pedestrians walk and wait along both sidewalks behind metal railings, remaining clear of the roadway. In the distance, a few oncoming vehicles travel uphill in the opposite lane without affecting the ego path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04418", "split": "train", "clip_key": "2020-0217-144444_005348_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "005348"}, "frames": ["2020-0217-144444_005348_movie_t-3.jpg", "2020-0217-144444_005348_movie_t-2.jpg", "2020-0217-144444_005348_movie_t-1.jpg", "2020-0217-144444_005348_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs past a fenced sidewalk and mid-rise buildings; the dry pavement looks smooth, and traffic is heavy with stop-and-go movement. Directly ahead in the ego lane, a green sedan taxi is stopped due to congestion and blocks our path, setting the pace. In the adjacent right lane, a black van creeps forward past us as the queue inches along. Farther ahead in our lane, a small truck slows with the jam, adding to the backup. Pedestrians on the left sidewalk walk along behind the railing and remain clear of the roadway.", "hazard_reasoning": "There is a green sedan stopped in the ego lane because of the traffic congestion ahead on the road. The driver should stop to avoid colliding with the halted vehicle ahead under these conditions."}
{"id": "train_04419", "split": "train", "clip_key": "2020-0227-153144_026960_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "026960"}, "frames": ["2020-0227-153144_026960_movie_t-3.jpg", "2020-0227-153144_026960_movie_t-2.jpg", "2020-0227-153144_026960_movie_t-1.jpg", "2020-0227-153144_026960_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane roadway curves gently left with smooth pavement and light traffic under strong sun glare. A low hedge borders the right side, separating a side bay lined with parked vehicles; no oncoming traffic is visible. Ahead to the right, a white van in the adjacent right lane proceeds straight and gradually pulls away from the ego car with the flow of traffic, maintaining its lane and not merging. No salient signals or signs appear in view.", "hazard_reasoning": "There is a white van driving forward in the right lane away from the ego-car because of the flow of traffic. Follow the vehicle ahead to maintain a safe distance in case it slows or brakes unexpectedly."}
{"id": "train_04420", "split": "train", "clip_key": "2020-0228-150133_049905_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "049905"}, "frames": ["2020-0228-150133_049905_movie_t-3.jpg", "2020-0228-150133_049905_movie_t-2.jpg", "2020-0228-150133_049905_movie_t-1.jpg", "2020-0228-150133_049905_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided roadway runs under an elevated structure with two same-direction lanes, a right guardrail, and smooth dry pavement; traffic is heavy and slow in a long queue. Directly ahead in the right ego lane, a gray sedan slows to a near stop because of traffic congestion ahead, constraining the ego car. In the left lane slightly ahead, a white minivan creeps forward alongside, limiting opportunities for the ego vehicle to change lanes. Farther ahead in the right lane, a small box truck with brake lights on inches along, setting the pace of the queue. The shoulder is narrow beside the guardrail and bridge pillars, leaving little lateral space.", "hazard_reasoning": "There is a gray sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The sedan's deceleration indicates increased congestion ahead, so you should slow down to maintain a safe following distance."}
{"id": "train_04421", "split": "train", "clip_key": "2020-0205-103411_064990_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "064990"}, "frames": ["2020-0205-103411_064990_movie_t-3.jpg", "2020-0205-103411_064990_movie_t-2.jpg", "2020-0205-103411_064990_movie_t-1.jpg", "2020-0205-103411_064990_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban arterial with three lanes in the ego direction runs between tall buildings, separated from oncoming traffic by a planted median. Pavement is smooth and traffic is moderate, forming a short queue at the intersection. A gray van directly ahead in the ego lane stops at a red light, holding the ego vehicle. A box truck slightly farther ahead in the right lane is also halted in the queue near the stop line. A white sedan alongside on the left keeps pace beside the ego car, limiting a move into the left lane. Overhead traffic signals display red.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, in the ego lane, because of a red traffic light. The van has halted at a red signal, so the driver should stop to avoid rear-ending the stationary vehicle."}
{"id": "train_04422", "split": "train", "clip_key": "2020-0205-152530_063482_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "063482"}, "frames": ["2020-0205-152530_063482_movie_t-3.jpg", "2020-0205-152530_063482_movie_t-2.jpg", "2020-0205-152530_063482_movie_t-1.jpg", "2020-0205-152530_063482_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban expressway with two same-direction lanes runs under elevated viaducts, bordered by a right guardrail and a short merge area; the pavement is dry and traffic is moderate but slow. A gray box truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. Ahead to the left, a blue container semi in the adjacent lane rolls at a similar slow speed alongside, preventing an easy move left. Farther left, a small white pickup proceeds in the same adjacent lane and edges forward, reducing the available gap for any lane change.", "hazard_reasoning": "There is a gray truck slowing down in the ego lane. The truck's deceleration ahead could require the driver to brake suddenly to avoid a collision, so maintaining a safe following distance is essential."}
{"id": "train_04423", "split": "train", "clip_key": "2020-0212-102546_028043_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "028043"}, "frames": ["2020-0212-102546_028043_movie_t-3.jpg", "2020-0212-102546_028043_movie_t-2.jpg", "2020-0212-102546_028043_movie_t-1.jpg", "2020-0212-102546_028043_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street runs under an elevated expressway, with the ego vehicle in a single left-side lane bordered by metal railings and a parallel roadway separated to the right; the pavement looks smooth and traffic is light. A white van ahead in the ego lane drives straight and gradually pulls away from the camera, setting the pace. A cyclist and a few pedestrians move along the sidewalks at the edges and stay outside the travel lane. Overhead blue direction signs appear as the road bends gently right, and several parked scooters line the left verge.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. Be aware because the van ahead may brake suddenly or change behavior, affecting your driving."}
{"id": "train_04424", "split": "train", "clip_key": "titan_clip_467_000048_movie", "source": {"subset": "titan", "scenario": "clip_467", "frame": "000048"}, "frames": ["titan_clip_467_000048_movie_t-3.jpg", "titan_clip_467_000048_movie_t-2.jpg", "titan_clip_467_000048_movie_t-1.jpg", "titan_clip_467_000048_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street features a narrow single-lane roadway paved with interlocking bricks and lined with bollards that separate the sidewalks; there is no centerline or median, and traffic is light with no moving vehicles. On the right close to the ego path, a woman in a black dress and white shirt carrying a handbag steps off the curb and crosses toward the left, potentially entering the lane. A man on the right sidewalk walks along the storefronts behind the bollards and does not enter the road. Several pedestrians ahead stay on the sidewalks and do not affect the lane.", "hazard_reasoning": "There is a woman in a black dress and a white shirt, carrying a handbag and crossing to the left side of the street. The driver should slow down because a pedestrian is actively crossing the roadway and could enter the vehicle's path unexpectedly."}
{"id": "train_04425", "split": "train", "clip_key": "2020-0210-155354_046264_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "046264"}, "frames": ["2020-0210-155354_046264_movie_t-3.jpg", "2020-0210-155354_046264_movie_t-2.jpg", "2020-0210-155354_046264_movie_t-1.jpg", "2020-0210-155354_046264_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs between mid-rise buildings, the pavement in good condition and traffic heavy and crawling. A gray van directly ahead in the ego lane is stopped, waiting because pedestrians are crossing at a crosswalk up ahead, holding the ego vehicle. To the right, a black sedan in the adjacent lane inches forward just ahead, limiting a rightward merge. Farther ahead in the center lane, a white van moves slowly with the queue and sets the pace downstream. Overhead green signs display lane arrows for through and right movements.", "hazard_reasoning": "There is a gray van stopped in the ego car lane because of pedestrians crossing at a crosswalk up ahead. Drivers should stop to avoid rear-ending the van and to yield to pedestrians crossing the road."}
{"id": "train_04426", "split": "train", "clip_key": "2020-0213-143552_049273_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "049273"}, "frames": ["2020-0213-143552_049273_movie_t-3.jpg", "2020-0213-143552_049273_movie_t-2.jpg", "2020-0213-143552_049273_movie_t-1.jpg", "2020-0213-143552_049273_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and maintain safe distance.", "environment_perception": "An urban two-way road with a single lane each way runs between buildings, divided by a metal fence median on smooth pavement; traffic is light but briefly impeded. A pedestrian overpass spans the roadway ahead. Immediately in front of the ego car, a white box truck in the same lane is stopped, blocking the path and constraining the pace. To the left at the curb, a small silver van is stopped just ahead, narrowing space. On the opposite carriageway beyond the median, an oncoming white van approaches under the footbridge and continues straight with no interaction.", "hazard_reasoning": "There is a white truck stopped in front of the ego car. The driver should stop to avoid colliding with the stationary vehicle and maintain a safe following distance."}
{"id": "train_04427", "split": "train", "clip_key": "titan_clip_1311_000330_movie", "source": {"subset": "titan", "scenario": "clip_1311", "frame": "000330"}, "frames": ["titan_clip_1311_000330_movie_t-3.jpg", "titan_clip_1311_000330_movie_t-2.jpg", "titan_clip_1311_000330_movie_t-1.jpg", "titan_clip_1311_000330_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking ahead", "environment_perception": "A narrow urban residential two-way road with no median and smooth asphalt runs straight between closely spaced buildings, and traffic is light with no moving vehicles besides the ego car. On the left edge ahead, a pedestrian wearing a black T-shirt and a gray skirt walks away from the ego car along the roadside, close to the travel lane and potentially entering the path. No other road users are visible. A yellow child crossing warning sign is posted on a pole to the left. On the right, orange traffic cones and a vending machine sit at the curb near a small side street, slightly constricting the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and a gray skirt, walking on the left side of the road, away from the ego car. The driver should be aware of the pedestrian walking on the left side to anticipate any crossing movement and avoid potential collision."}
{"id": "train_04428", "split": "train", "clip_key": "titan_clip_355_000114_movie", "source": {"subset": "titan", "scenario": "clip_355", "frame": "000114"}, "frames": ["titan_clip_355_000114_movie_t-3.jpg", "titan_clip_355_000114_movie_t-2.jpg", "titan_clip_355_000114_movie_t-1.jpg", "titan_clip_355_000114_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for crossing pedestrians", "environment_perception": "A dense urban commercial street with a single narrow lane in the ego direction has smooth pavement and light traffic, with no median. A white box truck is close alongside on the left near the camera, tight to the lane edge and narrowing space as the ego proceeds. Farther ahead in the same lane, a small van moves away slowly and governs the ego vehicle's pace. Ahead to the right, two pedestrians are crossing mid-block in the middle of the road toward the right curb, within the roadway the ego is approaching. Orange cones and bollards line the left curb beside shops and cafs.", "hazard_reasoning": "There are two pedestrians crossing the street in the middle of the road, to the right side. Slow down to yield and avoid collision with them."}
{"id": "train_04429", "split": "train", "clip_key": "2020-0127-132751_022062_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0127-132751_022062_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0127-132751_022062_movie_t-3_augB1.jpg", "2020-0127-132751_022062_movie_t-2_augB1.jpg", "2020-0127-132751_022062_movie_t-1_augB1.jpg", "2020-0127-132751_022062_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the motorcycle", "environment_perception": "An urban multi-lane road runs straight beneath an elevated highway, with three same-direction lanes and a guardrail on the right; the asphalt is dry and worn, and traffic is moderate. At the right edge close to the camera, a black motorcycle cuts into the ego lane from the right, encroaching on the ego path. A small white hatchback ahead in the ego lane proceeds steadily, setting the pace. Farther ahead in the right lane, a dark SUV continues straight with modest separation from the ego lane.", "hazard_reasoning": "There is a black motorcycle cutting in to the ego lane from the right lane. Its unexpected cut-in can lead to a close proximity or collision if not anticipated, so the driver should be aware to maintain a safe following distance."}
{"id": "train_04430", "split": "train", "clip_key": "titan_clip_432_000468_movie", "source": {"subset": "titan", "scenario": "clip_432", "frame": "000468"}, "frames": ["titan_clip_432_000468_movie_t-3.jpg", "titan_clip_432_000468_movie_t-2.jpg", "titan_clip_432_000468_movie_t-1.jpg", "titan_clip_432_000468_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the parked truck", "environment_perception": "The scene is an urban two-way street with no median, smooth asphalt, and very light traffic as the ego vehicle proceeds straight in the left lane. A gray truck is parked on the left side because of construction work, partly encroaching into the travel lane and constraining the ego vehicle's path. Another parked truck sits immediately to the near left at the curb, remaining stationary. A traffic guard stands on the right sidewalk beside several cones, watching the roadway and not entering the lane. No traffic signals are visible ahead, and beyond the work area the road appears clear of moving vehicles.", "hazard_reasoning": "There is a gray truck parked on the left side of the road because of construction work. The parked truck and nearby cone reduce shoulder clearance and may obstruct your path, so remain cautious to avoid unexpected obstacles."}
{"id": "train_04431", "split": "train", "clip_key": "titan_clip_1236_000204_movie", "source": {"subset": "titan", "scenario": "clip_1236", "frame": "000204"}, "frames": ["titan_clip_1236_000204_movie_t-3.jpg", "titan_clip_1236_000204_movie_t-2.jpg", "titan_clip_1236_000204_movie_t-1.jpg", "titan_clip_1236_000204_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban two-way residential street with one lane in each direction appears smooth and dry, and traffic is light as the ego vehicle proceeds in the left lane. On the right edge near the ego lane, a pedestrian carrying a handbag walks off the curb along the green shoulder and starts to cross, likely to enter the ego path. Farther ahead by the left sidewalk, another pedestrian in dark clothing is crossing from left to right toward the center, further constraining the ego vehicle's pace. In the opposite lane, a white van approaches from ahead as oncoming traffic. A pole sign is mounted on the right sidewalk, and a bicycle is parked along the left building frontage.", "hazard_reasoning": "There is a pedestrian carrying a handbag walking crossing the road from the left side. The driver should yield to allow the pedestrian safe passage and prevent a collision."}
{"id": "train_04432", "split": "train", "clip_key": "titan_clip_770_000144_movie", "source": {"subset": "titan", "scenario": "clip_770", "frame": "000144"}, "frames": ["titan_clip_770_000144_movie_t-3.jpg", "titan_clip_770_000144_movie_t-2.jpg", "titan_clip_770_000144_movie_t-1.jpg", "titan_clip_770_000144_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked vehicle", "environment_perception": "An urban side street with a single narrow lane and no centerline runs between buildings; the pavement is dry and traffic is light with no visible oncoming vehicles. A pedestrian on the right foreground walks out into the roadway and crosses ahead of the ego-vehicle, potentially entering its path. Midway ahead, there is a red hatchback parked on the left side of the road, narrowing the lane and creating a pinch point. Several pedestrians farther ahead near the parked car walk along and across the street and may constrain the ego's path. Bicycles are parked along the left curb, adding fixed obstacles close to the travel line.", "hazard_reasoning": "There is a red hatchback parked on the left side of the road. Its placement reduces the available lane width, requiring the driver to carefully manoeuvre around it to maintain safe clearance."}
{"id": "train_04433", "split": "train", "clip_key": "2020-0228-150133_013388_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "013388"}, "frames": ["2020-0228-150133_013388_movie_t-3.jpg", "2020-0228-150133_013388_movie_t-2.jpg", "2020-0228-150133_013388_movie_t-1.jpg", "2020-0228-150133_013388_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single lane in each direction runs between sidewalks with white railings; the pavement is dry and narrow, and traffic is queued. A silver van directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle. Farther ahead in the same lane a large bus stands in the same queue and contributes to the blockage. At the left edge by a side street two white vans wait near the curb and may merge into the ego lane when space opens. No oncoming vehicles are visible in the opposite lane.", "hazard_reasoning": "There is a silver van stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted van caused by upstream congestion."}
{"id": "train_04434", "split": "train", "clip_key": "2020-0220-102630_015629_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "015629"}, "frames": ["2020-0220-102630_015629_movie_t-3.jpg", "2020-0220-102630_015629_movie_t-2.jpg", "2020-0220-102630_015629_movie_t-1.jpg", "2020-0220-102630_015629_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road curves gently left through dense buildings, the pavement is smooth, and traffic is heavy and slow. A white sedan directly ahead in the ego lane is stopped at a red traffic light, holding the ego vehicle. In the adjacent right lane, a small flatbed truck travels alongside at low speed, constraining any lane change. Farther ahead in the right lanes, several box trucks queue and stop, adding to the congestion.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of the red traffic light. The driver should stop to obey the red signal and avoid a rear-end collision."}
{"id": "train_04435", "split": "train", "clip_key": "2020-0225-102455_085596_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_085596_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_085596_movie_t-3_augB1.jpg", "2020-0225-102455_085596_movie_t-2_augB1.jpg", "2020-0225-102455_085596_movie_t-1_augB1.jpg", "2020-0225-102455_085596_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road lined with office buildings has dry, well-kept pavement and heavy, slow-moving traffic. Directly ahead in the ego lane, a white hatchback slows because of congestion further ahead, setting the ego vehicle's pace. In the adjacent right lane, a flatbed truck creeps forward parallel to the ego vehicle, close to it. Alongside at close range on the right, a white car edges forward in the queue, remaining beside the ego vehicle. A yellow delivery van stands partly in the left curb lane, narrowing space near the sidewalk.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car, in the ego lane, because of the traffic congestion ahead. The driver should slow down to maintain a safe following distance under this congestion."}
{"id": "train_04436", "split": "train", "clip_key": "2020-0131-135401_059045_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "059045"}, "frames": ["2020-0131-135401_059045_movie_t-3.jpg", "2020-0131-135401_059045_movie_t-2.jpg", "2020-0131-135401_059045_movie_t-1.jpg", "2020-0131-135401_059045_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road without a median approaches a low railway overpass, the pavement looks intact, and traffic moves at a moderate pace. The ego vehicle proceeds in the left lane. A white van ahead in the ego lane moves forward under the bridge because the road in front of it is open. In the adjacent right lane, a silver minivan slightly ahead continues straight at a similar speed. Two pedestrians stand on the left sidewalk by the railing near the intersection, waiting and not entering the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04437", "split": "train", "clip_key": "2020-0228-102841_053458_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "053458"}, "frames": ["2020-0228-102841_053458_movie_t-3.jpg", "2020-0228-102841_053458_movie_t-2.jpg", "2020-0228-102841_053458_movie_t-1.jpg", "2020-0228-102841_053458_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked SUV", "environment_perception": "An urban multi-lane arterial runs straight between mid-rise buildings, with smooth pavement and a flexible-post median separating opposing traffic; overall flow is moderate and steady. A small white van travels ahead in the ego left lane at a constant speed, setting the pace. To the right, another white microvan drifts left and merges ahead of the ego, moving around buses stopped in a right-side bay. Farther ahead in the middle lane, a box truck continues forward at similar speed without affecting the ego lane. A large 50 speed marking is painted on the roadway.", "hazard_reasoning": "There is a black SUV parked on the left side of the road. You should be aware of this parked vehicle to ensure safe clearance when passing."}
{"id": "train_04438", "split": "train", "clip_key": "2020-0228-102841_001718_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "001718"}, "frames": ["2020-0228-102841_001718_movie_t-3.jpg", "2020-0228-102841_001718_movie_t-2.jpg", "2020-0228-102841_001718_movie_t-1.jpg", "2020-0228-102841_001718_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrian on right sidewalk", "environment_perception": "A narrow urban two-way street with single lanes, no median, smooth pavement, and light traffic comes into view. The ego vehicle follows a black van directly ahead in the same lane as it moves slowly toward a small intersection, constraining the ego's pace. On the right side near the intersection, a pedestrian wearing a black shirt and beige pants walks away from the ego car along the roadway edge and may step toward the lane. No oncoming vehicles are visible. A circular 30 sign is posted on the left building facade. Parked vehicles and a bicycle line the left side, slightly reducing usable space.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and beige pants, and walking away from the ego car, on the right side of the intersection. The pedestrian may enter the roadway unexpectedly, so the driver should maintain awareness."}
{"id": "train_04439", "split": "train", "clip_key": "2020-0207-101955_078353_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "078353"}, "frames": ["2020-0207-101955_078353_movie_t-3.jpg", "2020-0207-101955_078353_movie_t-2.jpg", "2020-0207-101955_078353_movie_t-1.jpg", "2020-0207-101955_078353_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban two-way road with sound barriers and guardrails has one lane per direction divided by a chevron buffer and low rail, the pavement is smooth and traffic is light with steady flow. A blue flatbed truck directly ahead in the ego lane accelerates away from the ego car, widening the gap. An oncoming silver station wagon travels in the right-side lane separated by the median, passing steadily without interaction. No signals or unusual signage affect movement, and no hazards or parked vehicles are visible.", "hazard_reasoning": "There is a blue truck in the ego lane, accelerating away from the ego car. The truck's acceleration increases the speed difference, so the driver should follow to maintain a safe distance and ensure smooth traffic flow."}
{"id": "train_04440", "split": "train", "clip_key": "titan_clip_1118_000240_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1118_000240_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1118_000240_movie_t-3_augB1.jpg", "titan_clip_1118_000240_movie_t-2_augB1.jpg", "titan_clip_1118_000240_movie_t-1_augB1.jpg", "titan_clip_1118_000240_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "An urban two-way street with one lane each direction and no median runs between mid-rise buildings; the pavement is smooth and traffic is light. A woman in a white dress carrying a handbag crosses from right to left ahead of the ego vehicle, entering the ego lane and briefly occupying its path. A silver van is stopped at the left edge near the camera with its side door open, and a person on a hand cart beside it protrudes slightly into the lane, narrowing the passage. An oncoming car advances in the right lane. A large 40 marking on the road surface indicates the posted speed.", "hazard_reasoning": "There is a woman wearing a white dress, carrying a handbag, and crossing the street from right to left, in front of the ego car. The pedestrian is crossing directly in front of the vehicle, so the driver should yield to avoid a collision."}
{"id": "train_04441", "split": "train", "clip_key": "2020-0218-103119_014947_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "014947"}, "frames": ["2020-0218-103119_014947_movie_t-3.jpg", "2020-0218-103119_014947_movie_t-2.jpg", "2020-0218-103119_014947_movie_t-1.jpg", "2020-0218-103119_014947_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian at crosswalk", "environment_perception": "An urban two-way arterial with two same-direction lanes approaches a signalized intersection; there is no physical median, the asphalt is dry, and traffic is moderate, forming a short queue at the red light. A small white kei car directly ahead in the ego lane eases to a stop at the crosswalk and constrains our pace. In the adjacent right through lane, a white van rolls forward and stops level with us, remaining in lane. At the left side of the intersection, a pedestrian wearing black pants and carrying an umbrella waits at the curb because the light is red and may enter our path when it changes.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying an umbrella, waiting to cross at the left side of the intersection, because of a red light. You should be aware of the pedestrian at the crosswalk in case they step into the roadway when the signal changes."}
{"id": "train_04442", "split": "train", "clip_key": "2020-0203-154554_051580_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "051580"}, "frames": ["2020-0203-154554_051580_movie_t-3.jpg", "2020-0203-154554_051580_movie_t-2.jpg", "2020-0203-154554_051580_movie_t-1.jpg", "2020-0203-154554_051580_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under an elevated structure, the surface dry and in good condition, with traffic queued and stationary at a red light. A gray sedan is stopped directly ahead in the ego lane, holding the ego car in place. In the adjacent right lane, a black minivan waits slightly ahead without merging. Farther ahead in the same lane, a small box truck also remains stopped, setting the pace of the queue. Overhead traffic signals show solid red, and a metal guardrail lines the left side.", "hazard_reasoning": "There is a gray sedan stopped in the ego lane, in front of the ego car. The driver must stop to maintain a safe following distance and avoid rear-ending the halted vehicle."}
{"id": "train_04443", "split": "train", "clip_key": "titan_clip_437_000222_movie", "source": {"subset": "titan", "scenario": "clip_437", "frame": "000222"}, "frames": ["titan_clip_437_000222_movie_t-3.jpg", "titan_clip_437_000222_movie_t-2.jpg", "titan_clip_437_000222_movie_t-1.jpg", "titan_clip_437_000222_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban alley with a single shared lane and block-pattern pavement appears quiet, with light vehicle traffic; a tarp-covered small truck is parked on the right and protrudes into the lane. Ahead near this truck, two pedestrians-one in a dress and one in black pants-walk in the middle of the lane toward the ego vehicle because the parked vehicle narrows the passage, and they may enter the car's path. A man on the left sidewalk walks toward a doorway and stays off the roadway, while another person stands at the far right edge by foliage. Rows of parked bicycles along the right further constrict space.", "hazard_reasoning": "There are two pedestrians wearing a dress and black pants, walking in the middle of the lane toward the ego car, because of the parked vehicle. The driver should carefully manoeuvre around them to avoid a potential collision."}
{"id": "train_04444", "split": "train", "clip_key": "2020-0213-143552_060667_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "060667"}, "frames": ["2020-0213-143552_060667_movie_t-3.jpg", "2020-0213-143552_060667_movie_t-2.jpg", "2020-0213-143552_060667_movie_t-1.jpg", "2020-0213-143552_060667_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban left-hand-traffic arterial with two lanes in the same direction runs straight beside a raised median; the pavement is smooth and traffic is queued. A white box truck is stopped directly ahead in the ego lane, holding the ego vehicle at a standstill. A dark van in the adjacent left lane is alongside and also stopped, limiting any chance to pass the truck. On the far side of the median, light oncoming traffic moves past and remains separated from the ego path.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The white truck ahead is stationary in the lane, so the driver should stop to prevent a collision."}
{"id": "train_04445", "split": "train", "clip_key": "2020-0206-101736_023665_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "023665"}, "frames": ["2020-0206-101736_023665_movie_t-3.jpg", "2020-0206-101736_023665_movie_t-2.jpg", "2020-0206-101736_023665_movie_t-1.jpg", "2020-0206-101736_023665_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A sunny urban arterial with two lanes in each direction features a painted hatched median and dry, smooth asphalt; traffic is light to moderate and flows steadily. Ahead in the left lane, the ego vehicle follows a black car continuing straight at a steady pace, determining the immediate headway. Slightly farther ahead in the adjacent right lane, a small blue flatbed truck proceeds straight, moving roughly parallel to the ego vehicle. In the opposite carriageway on the right, a white box truck approaches in the oncoming lanes, separated by the median and not affecting the ego lane.", "hazard_reasoning": "No caption is provided. There are no significant hazards detected; the driver can continue normally."}
{"id": "train_04446", "split": "train", "clip_key": "2020-0217-144444_005219_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "005219"}, "frames": ["2020-0217-144444_005219_movie_t-3.jpg", "2020-0217-144444_005219_movie_t-2.jpg", "2020-0217-144444_005219_movie_t-1.jpg", "2020-0217-144444_005219_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with dry, intact asphalt runs beside a fenced sidewalk, and same-direction traffic is heavy and stop-and-go. Ahead in the ego lane, a yellow sedan is stopped, holding the ego vehicle at a red light. To the right, a black minivan in the adjacent lane creeps forward with the queue and may overtake as gaps appear. On the left sidewalk, a pedestrian walks along the railing, separated from the roadway and not interacting with traffic.", "hazard_reasoning": "There is a yellow sedan stopped in front of the ego car, in the ego lane, because of red traffic lights. The driver should stop to avoid colliding with the stationary sedan at the red light."}
{"id": "train_04447", "split": "train", "clip_key": "2020-0204-150838_060131_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "060131"}, "frames": ["2020-0204-150838_060131_movie_t-3.jpg", "2020-0204-150838_060131_movie_t-2.jpg", "2020-0204-150838_060131_movie_t-1.jpg", "2020-0204-150838_060131_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane roadway with left-side traffic runs under an elevated structure; the ego car is in a left lane segregated from the right by flexible bollards on smooth pavement with slow, moderate flow. Directly ahead, a silver bus in the ego lane slowly accelerates, constraining the ego vehicle's speed. To the right, a green flatbed truck in the adjacent same-direction lane creeps forward parallel to the ego path but remains separated by the posts. Farther ahead in the right lane, a white bus proceeds straight and opens a gap. A side street and crosswalk appear on the left, but no pedestrians are in the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04448", "split": "train", "clip_key": "2020-0131-135401_017990_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "017990"}, "frames": ["2020-0131-135401_017990_movie_t-3.jpg", "2020-0131-135401_017990_movie_t-2.jpg", "2020-0131-135401_017990_movie_t-1.jpg", "2020-0131-135401_017990_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road approaches a signalized intersection beneath an elevated roadway, the pavement is in good condition and traffic is light to moderate. A black hatchback is stopped directly ahead in the ego lane because the signal ahead shows red, so the ego queues behind it. On the left, two cyclists travel forward in the blue bike lane alongside the queue, continuing toward the intersection and remaining close to the curb. A light-colored car in the left lane ahead is also stopped for the light, parallel to the ego. A striped island with railings divides the right edge near the intersection.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane because of the red traffic light ahead at the intersection. The driver should stop immediately to avoid rear-ending the halted vehicle and comply with the red signal."}
{"id": "train_04449", "split": "train", "clip_key": "2020-0131-103016_085369_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "085369"}, "frames": ["2020-0131-103016_085369_movie_t-3.jpg", "2020-0131-103016_085369_movie_t-2.jpg", "2020-0131-103016_085369_movie_t-1.jpg", "2020-0131-103016_085369_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road runs between mid-rise buildings, with a painted centerline, intact pavement, and moderate, steadily moving traffic. A small white van travels ahead in the ego lane at a steady speed, constraining the ego vehicle's pace. To the right, a larger white van in the adjacent same-direction lane runs parallel and slightly ahead without drifting toward the ego lane. On the opposite carriageway, several cars and vans approach in their own lanes, remaining separated by the center line and not affecting the ego path. A sidewalk with guardrails lines the left, and no unusual hazards are visible.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane, because of the green traffic arrow. The driver should follow the vehicle ahead to safely proceed through the intersection when the green arrow is active."}
{"id": "train_04450", "split": "train", "clip_key": "2020-0205-103411_120216_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "120216"}, "frames": ["2020-0205-103411_120216_movie_t-3.jpg", "2020-0205-103411_120216_movie_t-2.jpg", "2020-0205-103411_120216_movie_t-1.jpg", "2020-0205-103411_120216_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs beneath a pedestrian overpass; the pavement is dry and well marked, and traffic is heavy and mostly stationary. A signal ahead shows red, holding the queue. A black van directly ahead in the ego lane is stopped for the red light and blocks the ego vehicle's path. To the right, a cement mixer truck slightly ahead waits in the adjacent lane, remaining stopped and not merging toward the ego lane. On the left, a white box truck alongside creeps forward in its lane, narrowing space and limiting any lateral maneuver.", "hazard_reasoning": "There is a black van stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver must stop to prevent a collision with the halted van and obey the red signal."}
{"id": "train_04451", "split": "train", "clip_key": "2020-0131-135401_083997_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "083997"}, "frames": ["2020-0131-135401_083997_movie_t-3.jpg", "2020-0131-135401_083997_movie_t-2.jpg", "2020-0131-135401_083997_movie_t-1.jpg", "2020-0131-135401_083997_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes runs past mid-rise buildings, with a fenced median on the right separating oncoming traffic; the pavement is smooth and the flow is heavy, slowing beneath a pedestrian footbridge. A white van directly ahead in the ego lane slows for a queue, constraining the ego car's speed because of congestion ahead. A bronze sedan alongside in the adjacent left lane creeps forward parallel to the ego vehicle, limiting room to change lanes. Farther ahead in the left lane, a small white boxy car also slows toward the same backup, adding to the bottleneck.", "hazard_reasoning": "There is a white van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adapt to the traffic congestion ahead."}
{"id": "train_04452", "split": "train", "clip_key": "2020-0228-102841_082621_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "082621"}, "frames": ["2020-0228-102841_082621_movie_t-3.jpg", "2020-0228-102841_082621_movie_t-2.jpg", "2020-0228-102841_082621_movie_t-1.jpg", "2020-0228-102841_082621_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes and a median fence dividing oncoming traffic has smooth pavement and slow, moderate flow. A white sedan just ahead on the left shifts right from the left lane into the ego lane to bypass a parked truck, cutting in and briefly narrowing the gap ahead. A small box truck in the ego lane farther ahead continues straight at low speed, constraining the ego vehicle's pace. In the adjacent right lane a white van runs slightly ahead and maintains its lane and speed. On the curb lane to the far left a yellow delivery truck remains stopped, creating the obstruction.", "hazard_reasoning": "There is a white sedan cutting-in from the left lane to the ego lane because of the parked truck. The ego-vehicle should slow down to allow safe merging and avoid a potential collision."}
{"id": "train_04453", "split": "train", "clip_key": "titan_clip_893_000120_movie", "source": {"subset": "titan", "scenario": "clip_893", "frame": "000120"}, "frames": ["titan_clip_893_000120_movie_t-3.jpg", "titan_clip_893_000120_movie_t-2.jpg", "titan_clip_893_000120_movie_t-1.jpg", "titan_clip_893_000120_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street without a median runs between close buildings, the pavement smooth and the overall flow light with no moving vehicles apparent. On the left side near the ego car, a pedestrian in a white shirt and an orange hat walks away along the edge of the road, potentially edging toward the travel lane. Farther ahead near the middle of the roadway, another pedestrian walks in the same direction and shifts slightly right as he passes a stopped truck, which could affect the ego path. A large white box truck is parked on the right side ahead and several other vehicles are standing along the curbs, collectively narrowing the available corridor.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and an orange hat, walking on the left side of the road, away from the ego car. This pedestrian is on the roadway and could enter the vehicle's path unexpectedly, so the driver should slow down to maintain a safe margin and avoid collision."}
{"id": "train_04454", "split": "train", "clip_key": "titan_clip_1022_000486_movie", "source": {"subset": "titan", "scenario": "clip_1022", "frame": "000486"}, "frames": ["titan_clip_1022_000486_movie_t-3.jpg", "titan_clip_1022_000486_movie_t-2.jpg", "titan_clip_1022_000486_movie_t-1.jpg", "titan_clip_1022_000486_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A narrow two-way urban residential street with no median and smooth asphalt extends ahead, and traffic flow is light as the vehicle proceeds along the left side. A cyclist in a black T-shirt approaches ahead on the right side, riding toward the ego car near the center of the lane, which may bring them close to the ego's path. A scooter and a bicycle are parked in bays by the right curb, with several cars in recessed parking beside the apartments. No prominent traffic signals or speed signs are visible, and the sightline down the straight road is clear.", "hazard_reasoning": "There is a cyclist wearing a black t-shirt, cycling on the right side of the road, towards the ego car. The cyclist may drift into your path without warning, so you should carefully manoeuvre to maintain a safe distance."}
{"id": "train_04455", "split": "train", "clip_key": "titan_clip_961_000408_movie", "source": {"subset": "titan", "scenario": "clip_961", "frame": "000408"}, "frames": ["titan_clip_961_000408_movie_t-3.jpg", "titan_clip_961_000408_movie_t-2.jpg", "titan_clip_961_000408_movie_t-1.jpg", "titan_clip_961_000408_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban street with a single lane and brick pavement runs between tall buildings, with no median and light traffic. Ahead in the same lane, a white truck is parked toward the left side of the road, constraining the ego vehicle's path. On the left near the curb, a woman walks forward along the roadway edge beside storefronts and may enter the ego lane as she approaches the parked truck. Farther ahead on the right, a pedestrian stands near the curb by shop entrances, close to the line the ego vehicle would take around the truck. A bicycle is parked on the right shoulder beside cones, slightly narrowing the usable space.", "hazard_reasoning": "There is a white truck parked in the ego lane, on the left side of the road. It blocks the lane and reduces forward visibility, so the driver should manoeuvre carefully around the truck to maintain safe clearance."}
{"id": "train_04456", "split": "train", "clip_key": "titan_clip_161_000288_movie", "source": {"subset": "titan", "scenario": "clip_161", "frame": "000288"}, "frames": ["titan_clip_161_000288_movie_t-3.jpg", "titan_clip_161_000288_movie_t-2.jpg", "titan_clip_161_000288_movie_t-1.jpg", "titan_clip_161_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian carefully", "environment_perception": "An urban two-way street with one narrow lane in each direction and no median extends ahead, the pavement smooth and traffic light but slowed by curbside stops in left-hand traffic. Parked vans line both sides, narrowing the usable lane. A pedestrian in a white shirt is ahead near the middle of the road, walking away from the ego vehicle to pass a parked van and briefly occupying the ego lane. A white box truck further ahead in the same direction slows near the curb, setting the pace for the ego car. On the right, a small van stands at the curb with cones by a storefront, adding to the constriction.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking in the middle of the road, away from the ego-car, because of the parked vehicle. The pedestrian is crossing the roadway due to the parked trucks creating blind spots, so the driver should manoeuvre carefully around them."}
{"id": "train_04457", "split": "train", "clip_key": "titan_clip_707_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_707_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_707_000204_movie_t-3_augB1.jpg", "titan_clip_707_000204_movie_t-2_augB1.jpg", "titan_clip_707_000204_movie_t-1_augB1.jpg", "titan_clip_707_000204_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban residential street in Japan forms a two-way road with no center divider, smooth pavement, and light traffic as the ego vehicle proceeds along the left side. Ahead in the center of the roadway, an oncoming cyclist wearing a white T-shirt rides toward the ego car, occupying the middle of the lane and aligning with the ego vehicle's path. No other moving vehicles are visible. Bollards line the right edge and a bicycle is parked against the right wall, with buildings and overhead wires close to the curb.", "hazard_reasoning": "There is a cyclist wearing a white T-shirt and cycling in the middle of the road, toward the ego car. The cyclist's position in the center of the lane poses a collision risk, so the driver should slow down to maintain a safe distance."}
{"id": "train_04458", "split": "train", "clip_key": "2020-0203-154554_075431_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "075431"}, "frames": ["2020-0203-154554_075431_movie_t-3.jpg", "2020-0203-154554_075431_movie_t-2.jpg", "2020-0203-154554_075431_movie_t-1.jpg", "2020-0203-154554_075431_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes is separated from oncoming traffic by a painted center line; the dry pavement looks even and traffic is moderate with momentary slowing. A red SUV directly ahead in the ego lane slows, constraining the vehicle's pace. In the adjacent left lane, a white sedan runs slightly ahead at a similar speed. To the right of the center line, a large truck approaches as oncoming traffic and continues straight within its lane.", "hazard_reasoning": "There is a red SUV slowing in the ego lane. The red SUV's deceleration ahead could require the driver to reduce speed to maintain a safe following distance in order to avoid a collision."}
{"id": "train_04459", "split": "train", "clip_key": "2020-0207-101955_021073_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "021073"}, "frames": ["2020-0207-101955_021073_movie_t-3.jpg", "2020-0207-101955_021073_movie_t-2.jpg", "2020-0207-101955_021073_movie_t-1.jpg", "2020-0207-101955_021073_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban arterial with two same-direction lanes and a bollard-separated curb lane runs between mid-rise buildings; the pavement is smooth and traffic is heavy with a standing queue. The ego vehicle follows a small green-tarp truck directly ahead in the ego lane, which is stopped because of congestion ahead, blocking the path. In the adjacent left lane a blue flatbed truck farther ahead creeps forward with the line of vehicles, pacing the ego vehicle's progress. A black taxi to the left near the camera moves slowly alongside in the same direction within the left lane. Overhead a straight-ahead blue sign is visible, and the traffic signal ahead shows red.", "hazard_reasoning": "There is a green truck stopped in the ego lane because of traffic congestion ahead. The green truck blocks the lane and requires the driver to stop immediately to avoid a collision."}
{"id": "train_04460", "split": "train", "clip_key": "2020-0207-101955_008462_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "008462"}, "frames": ["2020-0207-101955_008462_movie_t-3.jpg", "2020-0207-101955_008462_movie_t-2.jpg", "2020-0207-101955_008462_movie_t-1.jpg", "2020-0207-101955_008462_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban multi-lane road runs between tall buildings with a raised planted median on the right and dry, slightly worn pavement; traffic is moderate and slow. A black van directly ahead in the ego lane is stopped, holding the lane and constraining the ego vehicle. In the adjacent left lane, a small white truck and several cars proceed forward, likely to pass the stopped vehicle. On the far side of the median, oncoming traffic moves steadily. A box truck is stationed in a loading bay along the left curb near pedestrians. An overhead blue sign directs Route 302 toward Kitashinjuku and Iidabashi.", "hazard_reasoning": "There is a black van stopped in the ego lane. Since it occupies the lane ahead and is stationary, you must stop immediately to avoid a collision."}
{"id": "train_04461", "split": "train", "clip_key": "2020-0207-151349_077524_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_077524_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_077524_movie_t-3_augB1.jpg", "2020-0207-151349_077524_movie_t-2_augB1.jpg", "2020-0207-151349_077524_movie_t-1_augB1.jpg", "2020-0207-151349_077524_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs under an elevated expressway with a guardrail on the right; the pavement is dry and traffic is slow and congested. A brown truck directly ahead in the ego lane slows because of the heavy queue ahead and sets the ego vehicle's pace. To the left, a dark sedan in the adjacent lane creeps forward and gradually edges past while staying close alongside the ego lane. Farther ahead in that left lane, a white van proceeds slowly behind other vehicles, contributing to the jam. Pedestrians line the left sidewalk but remain behind the railings and do not enter the roadway.", "hazard_reasoning": "There is a brown truck slowing down in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to adapt to the reduced speed and maintain a safe following distance under these conditions."}
{"id": "train_04462", "split": "train", "clip_key": "titan_clip_1361_000384_movie", "source": {"subset": "titan", "scenario": "clip_1361", "frame": "000384"}, "frames": ["titan_clip_1361_000384_movie_t-3.jpg", "titan_clip_1361_000384_movie_t-2.jpg", "titan_clip_1361_000384_movie_t-1.jpg", "titan_clip_1361_000384_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of the pedestrian", "environment_perception": "An urban narrow two-way street without a median runs between close buildings; the pavement is dry and worn, and traffic is light with no moving vehicles ahead. On the left near the sidewalk, a tall pedestrian in a white shirt walks toward the ego car along the edge of the road, close to the travel lane. Farther ahead on the right, a white kei truck stands at the curb with delivery items, slightly narrowing the passage. A 30 speed-limit sign and a no-parking sign are posted on a pole at the left. Parked bicycles cluster along the left curb, and cardboard boxes and a blue cooler sit near the right lane line, adding minor roadside obstacles.", "hazard_reasoning": "There is a tall pedestrian wearing a white shirt, walking on the left side of the road, towards the ego car. The pedestrian is approaching the travel lane and may step into the road, so the driver should be aware to avoid a potential collision."}
{"id": "train_04463", "split": "train", "clip_key": "2020-0203-114632_024193_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "024193"}, "frames": ["2020-0203-114632_024193_movie_t-3.jpg", "2020-0203-114632_024193_movie_t-2.jpg", "2020-0203-114632_024193_movie_t-1.jpg", "2020-0203-114632_024193_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with two same-direction lanes and a painted centerline approaches a signalized intersection; the pavement is dry and traffic is moderate with steady flow. Ahead in the ego lane, a white box truck travels straight and continues through the intersection as the signal shows green, setting the ego car's pace. In the adjacent right lane slightly ahead, two white vans proceed straight at similar speed, remaining in their lane and not encroaching on the ego path. The oncoming lanes on the right side show light opposing flow farther ahead. Overhead traffic lights facing the ego direction display green.", "hazard_reasoning": "A white truck is driving in front of the ego car in the ego lane, because of the green traffic light. The green light may change soon, so the driver should be aware and adjust speed accordingly."}
{"id": "train_04464", "split": "train", "clip_key": "titan_clip_858_000432_movie", "source": {"subset": "titan", "scenario": "clip_858", "frame": "000432"}, "frames": ["titan_clip_858_000432_movie_t-3.jpg", "titan_clip_858_000432_movie_t-2.jpg", "titan_clip_858_000432_movie_t-1.jpg", "titan_clip_858_000432_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian ahead", "environment_perception": "An urban residential scene shows a narrow two-way road with no median and dry, smooth pavement, and traffic is light as the ego vehicle approaches a small cross intersection. Ahead, a pedestrian carrying an umbrella and a handbag crosses from right to left directly in front of the ego car, walking steadily and occupying the lane, so the vehicle must wait. Nearer on the right, a man with a shopping bag steps off the curb and crosses leftward through the intersection, entering the ego path and further constraining movement. No vehicles are moving in either direction. A large 30 speed marking is painted on the roadway, and many parked bicycles line both sides.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and handbag, crossing the street in front of the ego car, from the right side to the left side. The driver should yield to the crossing pedestrian to prevent a collision."}
{"id": "train_04465", "split": "train", "clip_key": "titan_clip_725_000378_movie", "source": {"subset": "titan", "scenario": "clip_725", "frame": "000378"}, "frames": ["titan_clip_725_000378_movie_t-3.jpg", "titan_clip_725_000378_movie_t-2.jpg", "titan_clip_725_000378_movie_t-1.jpg", "titan_clip_725_000378_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban street with a single lane each way approaches a T-intersection with a wide zebra crosswalk; the pavement is dry and smooth and traffic is light. Ahead, a man in a black T-shirt, beige shorts, and a cap crosses the ego lane on the marked crosswalk, directly in the vehicle's path. To the right across the crosswalk, a white delivery truck is stopped at the corner along the curb, occupying part of the near side of the cross street. Near the truck, a person in a green top stands on the sidewalk, waiting and not entering the crosswalk. A pedestrian crossing sign and a blue left-turn arrow sign are posted.", "hazard_reasoning": "There's a man wearing a black t-shirt, wearing beige shorts, and wearing a cap, crossing the street, in the ego car lane, because of a crosswalk ahead. The driver should stop because the pedestrian is walking into the vehicle's path at the crosswalk."}
{"id": "train_04466", "split": "train", "clip_key": "2020-0214-145407_047194_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "047194"}, "frames": ["2020-0214-145407_047194_movie_t-3.jpg", "2020-0214-145407_047194_movie_t-2.jpg", "2020-0214-145407_047194_movie_t-1.jpg", "2020-0214-145407_047194_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop due to red light ahead", "environment_perception": "A dense urban signalized intersection with no median lies ahead; the pavement looks smooth and traffic is moderate but stopped for a red light. A black sedan directly ahead in the ego lane is halted at the line because of the red signal, holding the ego car. A dark coupe waits slightly ahead in the lane to the right, parallel to the ego vehicle. Cross traffic of several white cars proceeds through the intersection from right to left across the ego path. The traffic lights facing the ego approach show solid red on both near and far poles.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The red signal requires the driver to halt and prevent a rear-end collision by stopping in time."}
{"id": "train_04467", "split": "train", "clip_key": "2020-0131-103016_057499_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "057499"}, "frames": ["2020-0131-103016_057499_movie_t-3.jpg", "2020-0131-103016_057499_movie_t-2.jpg", "2020-0131-103016_057499_movie_t-1.jpg", "2020-0131-103016_057499_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane boulevard with a hedge median and smooth pavement carries steady, moderate traffic. The ego travels in the left-side carriageway where flow is orderly. A black van ahead in the ego lane proceeds straight through a green signal and sets the ego vehicle's pace. A dark sedan slightly ahead in the right adjacent lane continues straight at similar speed, remaining parallel without drifting toward the ego lane. A white compact car draws alongside in the far left lane near the camera and then moves ahead, briefly narrowing lateral space. The overhead traffic light ahead shows green, and pedestrians walk along the left sidewalk behind a guardrail.", "hazard_reasoning": "There is a black van driving in front of the ego car in the ego lane, because of the green traffic light. The driver should follow the vehicle ahead to maintain proper spacing and react to its movements."}
{"id": "train_04468", "split": "train", "clip_key": "titan_clip_1197_000384_movie", "source": {"subset": "titan", "scenario": "clip_1197", "frame": "000384"}, "frames": ["titan_clip_1197_000384_movie_t-3.jpg", "titan_clip_1197_000384_movie_t-2.jpg", "titan_clip_1197_000384_movie_t-1.jpg", "titan_clip_1197_000384_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on right side", "environment_perception": "A narrow urban side street without marked lanes and with block-paved surface runs between buildings, with no median and light traffic. A small car ahead in the ego lane moves slowly up the street and loosely sets the pace. On the right foreground, a pedestrian holding a black umbrella walks toward the camera along the edge outside the lane. Farther ahead on the right, a pedestrian in a white shirt and black pants walks away from the ego car along the roadside and could step into the lane. A red delivery scooter is parked partly in the roadway on the left, with bicycles and traffic cones further narrowing the usable width.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking along the right side of the road, away from the ego car. The driver should be aware as the pedestrian's movement could unexpectedly enter the driving lane."}
{"id": "train_04469", "split": "train", "clip_key": "titan_clip_916_000306_movie", "source": {"subset": "titan", "scenario": "clip_916", "frame": "000306"}, "frames": ["titan_clip_916_000306_movie_t-3.jpg", "titan_clip_916_000306_movie_t-2.jpg", "titan_clip_916_000306_movie_t-1.jpg", "titan_clip_916_000306_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the crossing pedestrian.", "environment_perception": "A narrow urban shopping street with a single undivided lane comes into view, with a brick-paved apron leading to smooth asphalt; vehicular traffic is light and no cars are immediately ahead. A pedestrian wearing a white T-shirt and carrying a backpack crosses from the right to the left directly in front of the ego vehicle, walking across the lane and briefly occupying its path. On the right edge, two pedestrians near the storefront move along the curb toward the camera, staying close to the building. Farther ahead, several people on the left side walk away along the roadway margins without crossing. Storefront displays and signs line both sides and slightly narrow the roadside space.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and carrying a backpack, who is crossing the street in front of the ego car, from the right side to the left side of the street. The driver should manoeuvre carefully around the crossing pedestrian to avoid a collision."}
{"id": "train_04470", "split": "train", "clip_key": "2020-0218-103119_045462_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "045462"}, "frames": ["2020-0218-103119_045462_movie_t-3.jpg", "2020-0218-103119_045462_movie_t-2.jpg", "2020-0218-103119_045462_movie_t-1.jpg", "2020-0218-103119_045462_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban street with two lanes in the ego direction has smooth pavement and light traffic briefly queued at an intersection. A gray box truck directly ahead in the ego lane is stopped for the red traffic light, holding the ego car. In the adjacent right lane, a white hatchback waits slightly behind the truck and creeps forward before stopping again. Farther ahead in that lane, a small yellow flatbed truck also waits near the line, constraining both lanes. An overhead signal to the right shows red.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid colliding with the halted truck and to obey the traffic signal under this situation."}
{"id": "train_04471", "split": "train", "clip_key": "2020-0131-135401_023097_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "023097"}, "frames": ["2020-0131-135401_023097_movie_t-3.jpg", "2020-0131-135401_023097_movie_t-2.jpg", "2020-0131-135401_023097_movie_t-1.jpg", "2020-0131-135401_023097_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around construction cone", "environment_perception": "An urban multi-lane divided road with smooth pavement carries light same-direction traffic while a temporary construction zone closes the left side. Cones and red barriers line the left curb and a pair of yellow arrow boards on the roadway direct a merge to the right. A work truck is parked just ahead on the left within the cordoned area, and an orange cone-like object sits on the left side of the ego car because of construction work, keeping that lane blocked. A road worker ahead near the cones on the right side of the ego lane walks along the taper and may step close to the path. A dark car farther ahead in the same direction proceeds straight through the narrowed section at low speed, constraining the pace.", "hazard_reasoning": "There is an orange cone-like object on the left side of the ego car because of construction work. This cone indicates a lane encroachment by construction barriers, so the driver should manoeuvre around it to prevent impact."}
{"id": "train_04472", "split": "train", "clip_key": "titan_clip_971_000144_movie", "source": {"subset": "titan", "scenario": "clip_971", "frame": "000144"}, "frames": ["titan_clip_971_000144_movie_t-3.jpg", "titan_clip_971_000144_movie_t-2.jpg", "titan_clip_971_000144_movie_t-1.jpg", "titan_clip_971_000144_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow undivided lane and green edge lanes runs between shops; the pavement is smooth and vehicle traffic is light while many pedestrians share the roadway. On the left edge near the ego, a pedestrian in a red T-shirt and black pants walks toward the car, stepping inward because another pedestrian is alongside them, so they may drift into the ego lane. Just ahead on the left guideline, a man in white walks toward the ego in the lane, constraining pace. Farther ahead across the center and right of the lane, several pedestrians move away and loosely cross the path, occupying the lane and limiting available space. Bicycles are parked along the curbs.", "hazard_reasoning": "There is a pedestrian wearing a red T-shirt and black pants, and walking on the left side of the road, towards the ego-car, because of another pedestrian on their left. The pedestrian may step into the lane unexpectedly, so slowing down reduces collision risk."}
{"id": "train_04473", "split": "train", "clip_key": "2020-0217-144444_010538_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "010538"}, "frames": ["2020-0217-144444_010538_movie_t-3.jpg", "2020-0217-144444_010538_movie_t-2.jpg", "2020-0217-144444_010538_movie_t-1.jpg", "2020-0217-144444_010538_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban single-lane-each-way street curves left toward an intersection, the pavement looks smooth and traffic is light with no median. No oncoming vehicles are visible. A red sedan ahead in the ego lane slows as the lane veers left, guiding through the bend and effectively setting the ego vehicle's pace. On the left sidewalk near the crosswalk, a person waits by the railing at the corner, watching the road. On the right sidewalk, another person walks toward the intersection near the crosswalk but remains outside the roadway.", "hazard_reasoning": "There is a red sedan slowing down in front of the ego-car, in the ego lane, because the lane is veering to the left. The sedan's deceleration in the ego lane poses a risk of rear-end collision due to sudden braking, so the driver should follow the vehicle ahead at a safe distance to accommodate its reduced speed."}
{"id": "train_04474", "split": "train", "clip_key": "2020-0212-102546_055006_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "055006"}, "frames": ["2020-0212-102546_055006_movie_t-3.jpg", "2020-0212-102546_055006_movie_t-2.jpg", "2020-0212-102546_055006_movie_t-1.jpg", "2020-0212-102546_055006_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes, curbside shrubs on the right, and smooth asphalt carries light to moderate traffic that compresses near an intersection. A silver van directly ahead in the ego lane is stopped and holds the ego vehicle because the traffic light ahead is red. In the adjacent right lane, a small white car farther ahead rolls slowly toward the intersection in the same direction, leaving a gap beside the van. A cyclist at the left curb by a side street waits at the corner and stays out of the lane.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop because the van ahead is halted at a red signal, posing a risk of collision if not braking in time."}
{"id": "train_04475", "split": "train", "clip_key": "2020-0220-102630_071819_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "071819"}, "frames": ["2020-0220-102630_071819_movie_t-3.jpg", "2020-0220-102630_071819_movie_t-2.jpg", "2020-0220-102630_071819_movie_t-1.jpg", "2020-0220-102630_071819_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between mid-rise buildings, the dry pavement in good condition as traffic bunches into a heavy queue at a signalized intersection ahead. A white van directly ahead in the ego lane is stopped at the red light, holding the ego vehicle. To the left, a black minivan waits slightly ahead in the adjacent lane as part of the same queue, blocking a left lane change. On the right, a black SUV is stopped nearly alongside in the neighboring lane, keeping close spacing beside the ego vehicle. Overhead traffic signals display red.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of the red traffic light. The driver should stop because the van is halted at a red light ahead and proceeding could lead to a collision."}
{"id": "train_04476", "split": "train", "clip_key": "titan_clip_932_000402_movie", "source": {"subset": "titan", "scenario": "clip_932", "frame": "000402"}, "frames": ["titan_clip_932_000402_movie_t-3.jpg", "titan_clip_932_000402_movie_t-2.jpg", "titan_clip_932_000402_movie_t-1.jpg", "titan_clip_932_000402_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Be cautious of slowing vehicle ahead.", "environment_perception": "An urban two-way street with one lane in each direction runs between mid-rise buildings; the pavement is dry and smooth, and traffic is moderate with steady opposing flow. Ahead in the ego lane, a gray sedan slows and begins a left turn at a side street, briefly constraining the ego vehicle's pace. An oncoming white box truck approaches on the right in its lane and passes by steadily without encroaching. Farther ahead, several cars in our lane move slowly behind the turning sedan, keeping the overall speed down. Parked vehicles line the left curb, slightly narrowing the usable lane.", "hazard_reasoning": "There is a gray sedan slowing down in the ego lane, because it is making a left turn. The vehicle's reduction in speed could lead to abrupt braking or unexpected deceleration for the driver, requiring awareness to safely adjust speed."}
{"id": "train_04477", "split": "train", "clip_key": "2020-0205-152530_028953_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "028953"}, "frames": ["2020-0205-152530_028953_movie_t-3.jpg", "2020-0205-152530_028953_movie_t-2.jpg", "2020-0205-152530_028953_movie_t-1.jpg", "2020-0205-152530_028953_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial runs under an elevated structure with smooth pavement, and traffic is heavy and mostly stopped near an intersection. A gray minivan directly ahead in the ego lane is stopped for a red traffic light and constrains the ego vehicle. To the left, a red hatchback slightly ahead slows in the adjacent lane as part of the same queue. Farther ahead, several cars in the left lanes remain halted, forming a line toward the junction. A pedestrian walks along the left sidewalk, well separated from the roadway.", "hazard_reasoning": "There is a gray minivan stopped in the ego lane in front of the ego car, because of a red traffic light. The driver should stop to avoid colliding with the minivan at the red light."}
{"id": "train_04478", "split": "train", "clip_key": "titan_clip_1122_000432_movie", "source": {"subset": "titan", "scenario": "clip_1122", "frame": "000432"}, "frames": ["titan_clip_1122_000432_movie_t-3.jpg", "titan_clip_1122_000432_movie_t-2.jpg", "titan_clip_1122_000432_movie_t-1.jpg", "titan_clip_1122_000432_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian in road.", "environment_perception": "A narrow urban street with a single marked lane runs between shops and a construction wall on the right; the pavement is smooth and traffic is light with no oncoming vehicles visible. A pedestrian in a white shirt and black pants carrying a blue handbag walks away from the ego vehicle in the middle of the road ahead, occupying the path. Two pedestrians at the right foreground walk toward the camera along the roadway edge beside a parked white van, reducing lateral clearance. A white car ahead in the same direction continues straight toward a junction, setting the pace. A yield sign and a prohibition sign appear near the worksite.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a blue handbag, and walking away from the ego car, in the middle of the road. The pedestrian's position in the lane creates a collision risk, so the driver should yield to avoid striking them."}
{"id": "train_04479", "split": "train", "clip_key": "2020-0214-102601_076672_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "076672"}, "frames": ["2020-0214-102601_076672_movie_t-3.jpg", "2020-0214-102601_076672_movie_t-2.jpg", "2020-0214-102601_076672_movie_t-1.jpg", "2020-0214-102601_076672_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian at crosswalk", "environment_perception": "An urban T-junction appears with the ego vehicle on a side street facing a zebra crosswalk and the main two-way road beyond; pavement is dry and traffic on the main road is moderate. A pedestrian crosses the street ahead from right to left on the crosswalk, moving into the ego vehicle's path. A dark SUV directly ahead edges through the crosswalk and turns left onto the main road, constraining the ego vehicle's departure. On the main road, a silver minivan in the near lane travels leftward across the view while a white sedan in the far lane moves rightward, creating alternating gaps for exiting traffic.", "hazard_reasoning": "There is a pedestrian crossing the street at the crosswalk from the right to the left. The driver should yield because the pedestrian has the right of way and is entering the vehicle's path."}
{"id": "train_04480", "split": "train", "clip_key": "titan_clip_855_000168_movie", "source": {"subset": "titan", "scenario": "clip_855", "frame": "000168"}, "frames": ["titan_clip_855_000168_movie_t-3.jpg", "titan_clip_855_000168_movie_t-2.jpg", "titan_clip_855_000168_movie_t-1.jpg", "titan_clip_855_000168_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked hatchback", "environment_perception": "An urban commercial street with a single travel lane curves gently right, with no median and dry, worn pavement; traffic is light. Ahead on the left side of the ego lane, a silver hatchback is parked, narrowing the usable lane. Farther ahead along the right curb, a large box truck stands with its rear open while workers handle carts and goods, creating a constricted passage beside it. On the left sidewalk near the camera, several pedestrians walk along the curb and linger by storefronts, close to the roadway but staying on the sidewalk.", "hazard_reasoning": "There is a silver hatchback parked on the left side of the ego lane. The driver should carefully manoeuvre around this parked vehicle to avoid collision or disrupting traffic flow."}
{"id": "train_04481", "split": "train", "clip_key": "2020-0228-102841_013996_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "013996"}, "frames": ["2020-0228-102841_013996_movie_t-3.jpg", "2020-0228-102841_013996_movie_t-2.jpg", "2020-0228-102841_013996_movie_t-1.jpg", "2020-0228-102841_013996_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the white truck", "environment_perception": "An urban commercial street has one lane in each direction with a hatched center buffer, dry smooth pavement, and light traffic. A white delivery truck is parked along the left curb ahead with its rear open as it is being unloaded, partially intruding into the ego lane and narrowing the passage. A dark sedan directly ahead in the ego lane slows and then proceeds past the truck, setting the ego vehicle's pace. On the right, a cyclist waits with a bicycle by the curb near a cone and may merge into the lane. The opposite lane shows no oncoming vehicles, and pedestrians walk along the sidewalks.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. The parked truck partially obstructs the roadway and pedestrian pathways, so the driver should manoeuvre carefully around it."}
{"id": "train_04482", "split": "train", "clip_key": "2020-0204-150838_033757_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "033757"}, "frames": ["2020-0204-150838_033757_movie_t-3.jpg", "2020-0204-150838_033757_movie_t-2.jpg", "2020-0204-150838_033757_movie_t-1.jpg", "2020-0204-150838_033757_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road through tall buildings has well-marked lanes, no visible median, dry pavement, and heavy stop-and-go traffic. A white van directly ahead in the ego lane is stationary with brake lights on because congestion blocks the way, holding the ego car. To the left, a black taxi alongside creeps forward in the parallel same-direction lane, keeping close and limiting lateral space. On the right, another white van slightly ahead in the adjacent lane rolls slowly with the queue beside the ego vehicle. A blue direction sign ahead indicates straight travel.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the halted vehicle due to congestion."}
{"id": "train_04483", "split": "train", "clip_key": "2020-0131-135401_025048_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "025048"}, "frames": ["2020-0131-135401_025048_movie_t-3.jpg", "2020-0131-135401_025048_movie_t-2.jpg", "2020-0131-135401_025048_movie_t-1.jpg", "2020-0131-135401_025048_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road approaches a large signalized intersection beneath a pedestrian overpass; the pavement is dry and smooth, and traffic is moderate. Cones line the left curb by a stairway, narrowing the shoulder. A silver SUV directly ahead in the ego lane stands at the stop line because the traffic light shows red, so the ego car waits behind it. In the adjacent right lanes, a white van ahead creeps forward and another van farther right continues straight within its lane. Cross-traffic on the perpendicular street moves left to right through the junction while our direction remains stopped.", "hazard_reasoning": "There is a silver SUV stopped in the ego lane, in front of the ego car, because of the red traffic lights. The driver should stop because the vehicle ahead is stationary at a red light, and failing to do so could result in a rear-end collision."}
{"id": "train_04484", "split": "train", "clip_key": "2020-0228-102841_014514_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "014514"}, "frames": ["2020-0228-102841_014514_movie_t-3.jpg", "2020-0228-102841_014514_movie_t-2.jpg", "2020-0228-102841_014514_movie_t-1.jpg", "2020-0228-102841_014514_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van", "environment_perception": "An urban commercial street with two same-direction lanes and a painted chevron buffer on the right has dry pavement and light-to-moderate, smoothly moving traffic. A black taxi directly ahead in the ego lane continues straight at a steady pace and sets the ego vehicle's speed. There is a white van parked on the left side of the road, in the ego lane, encroaching from the curb and constraining available space. A dark sedan travels slightly ahead in the adjacent right lane, moving straight parallel to the ego vehicle and limiting immediate room to merge. Farther ahead, additional vehicles are visible near the intersection, but no salient signals or unusual controls stand out.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane. The parked white van obstructs the ego lane, so the driver must carefully manoeuvre around it to maintain safe passage."}
{"id": "train_04485", "split": "train", "clip_key": "titan_clip_232_000030_movie", "source": {"subset": "titan", "scenario": "clip_232", "frame": "000030"}, "frames": ["titan_clip_232_000030_movie_t-3.jpg", "titan_clip_232_000030_movie_t-2.jpg", "titan_clip_232_000030_movie_t-1.jpg", "titan_clip_232_000030_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on road", "environment_perception": "A narrow urban street with paving blocks and tall buildings lacks a centerline and sidewalks, and traffic is light and slow on the smooth surface. Far ahead in the travel way, a small white van moves away at low speed, setting the pace. On the right edge near the ego path, a pedestrian in a striped shirt and green pants walks toward the vehicle in the roadway because there is no sidewalk, occupying the lane edge. Several other pedestrians on the right also walk toward the camera along the curb, some stepping at the edge of the lane.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt and green pants, walking on the right side of the road, toward the ego car, because there is no sidewalk. The pedestrian is walking on the roadway toward the vehicle where no sidewalk exists, posing a collision risk."}
{"id": "train_04486", "split": "train", "clip_key": "titan_clip_690_000186_movie", "source": {"subset": "titan", "scenario": "clip_690", "frame": "000186"}, "frames": ["titan_clip_690_000186_movie_t-3.jpg", "titan_clip_690_000186_movie_t-2.jpg", "titan_clip_690_000186_movie_t-1.jpg", "titan_clip_690_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban commercial street with shops lines both sides forms a two-way road without a median, the asphalt appears smooth and vehicular traffic is light. Ahead on the right, a pedestrian in a blue shirt and black pants pushes a trolley toward the ego vehicle along the roadway where there is no sidewalk, moving close to the ego lane. At the right edge in the foreground, another pedestrian walks toward the camera inside the white edge line, reducing available space. On the left by the storefronts, a pedestrian walks along the curb in the same direction as the ego, staying near a parked bicycle. A blue right-pointing arrow sign is posted on the left building facade.", "hazard_reasoning": "There's a pedestrian wearing a blue shirt, black pants, and pushing a trolley, walking on the right side of the road toward the ego car, because there is no sidewalk. Therefore, the driver should manoeuvre carefully around the pedestrian to avoid collision."}
{"id": "train_04487", "split": "train", "clip_key": "titan_clip_1155_000528_movie", "source": {"subset": "titan", "scenario": "clip_1155", "frame": "000528"}, "frames": ["titan_clip_1155_000528_movie_t-3.jpg", "titan_clip_1155_000528_movie_t-2.jpg", "titan_clip_1155_000528_movie_t-1.jpg", "titan_clip_1155_000528_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on right side", "environment_perception": "An urban two-way street with no center divider and smooth pavement runs between close buildings, and the vehicle keeps left; traffic is light with no cars ahead or oncoming, so speed is low. Two pedestrians ahead in the middle of the ego lane walk away, one pulling a suitcase and the other shaded by an umbrella, constraining the vehicle's pace. On the right edge near the curb, a pedestrian wearing a green dress and holding an umbrella stands beside parked bicycles close to the travel lane. Parked bicycles and curbside bins crowd the right margin but remain stationary.", "hazard_reasoning": "There is a pedestrian wearing a green dress and holding an umbrella, standing on the right side of the road. The pedestrian may step onto the roadway unexpectedly, so the driver should be cautious and prepared to slow down."}
{"id": "train_04488", "split": "train", "clip_key": "2020-0227-104226_015934_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "015934"}, "frames": ["2020-0227-104226_015934_movie_t-3.jpg", "2020-0227-104226_015934_movie_t-2.jpg", "2020-0227-104226_015934_movie_t-1.jpg", "2020-0227-104226_015934_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene under an elevated roadway shows a three-lane same-direction road with a right-side guardrail and smooth pavement, with moderate, slow-moving traffic. A gray box truck directly ahead in the ego lane drives away from the camera and sets the pace of the ego car. Slightly ahead to the left, a white minivan continues straight in the adjacent lane at a similar speed, remaining parallel to the ego vehicle. On the far left, a black sedan travels forward beside the ego car, limiting immediate room for a left lane change.", "hazard_reasoning": "There is a gray truck driving in the ego lane away from the ego car. The truck ahead may brake unexpectedly or slow down, so the driver should be aware of its movement to maintain a safe following distance."}
{"id": "train_04489", "split": "train", "clip_key": "titan_clip_852_000456_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_852_000456_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_852_000456_movie_t-3_augB1.jpg", "titan_clip_852_000456_movie_t-2_augB1.jpg", "titan_clip_852_000456_movie_t-1_augB1.jpg", "titan_clip_852_000456_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street appears with a narrow single-lane shared roadway paved in bricks and lined by bollards; there is no centerline or median and no other vehicles, so traffic is light. A pedestrian ahead in the ego path crosses from the left to the right side of the street at walking pace, briefly occupying the lane. Another pedestrian on the left edge near the bollards walks toward the camera along the curb without stepping into the lane. Farther ahead on the right sidewalk, a couple of pedestrians walk away beside shopfronts, remaining off the carriageway. The corridor is tight with closely spaced bollards but otherwise clear.", "hazard_reasoning": "There is a pedestrian in front of the ego car, crossing the street from the left to right side. The pedestrian is stepping into the vehicle's path, so the driver should slow down to yield and ensure the pedestrian's safety."}
{"id": "train_04490", "split": "train", "clip_key": "titan_clip_275_000678_movie", "source": {"subset": "titan", "scenario": "clip_275", "frame": "000678"}, "frames": ["titan_clip_275_000678_movie_t-3.jpg", "titan_clip_275_000678_movie_t-2.jpg", "titan_clip_275_000678_movie_t-1.jpg", "titan_clip_275_000678_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential two-way street without a centerline runs between low buildings; the asphalt is dry and smooth, and traffic is light with no moving vehicles as the ego travels on the left side. Ahead on the right edge, a pedestrian in a black shirt and pants carries shopping bags and walks toward the ego car along the roadway, reducing the usable width in the ego lane. Slightly farther ahead on the right, a person stands beside a bicycle at the curb and remains stationary. Parked bicycles and clusters of potted plants line both sides and encroach slightly into the roadway, and no prominent traffic signals or signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants, holding shopping bags, and walking on the right side of the road, toward the ego car. The pedestrian is walking toward the vehicle in the driving lane, increasing collision risk, so the driver should slow down to avoid a potential collision."}
{"id": "train_04491", "split": "train", "clip_key": "titan_clip_907_000162_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_907_000162_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_907_000162_movie_t-3_augB1.jpg", "titan_clip_907_000162_movie_t-2_augB1.jpg", "titan_clip_907_000162_movie_t-1_augB1.jpg", "titan_clip_907_000162_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban corridor narrows to a single-lane roadway due to construction barriers; the pavement looks sound and traffic is light with no moving vehicles ahead. Straight ahead in the middle of the lane, a pedestrian wearing a blue shirt, black pants, and a helmet walks away from the ego vehicle because construction on the left blocks the roadside, occupying the ego path and setting the pace. Farther ahead, two additional pedestrians in work gear continue along the center of the roadway in the same direction, still within the ego lane. Along the left, a large flatbed truck is stopped beside a scaffolded building with workers nearby, while orange fencing lines the right, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, black pants, and a helmet, walking in the middle of the road, away from the ego car, because of construction work on the left. The driver should manoeuvre carefully around the pedestrian to avoid collision while navigating the construction area."}
{"id": "train_04492", "split": "train", "clip_key": "2020-0220-151845_018098_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "018098"}, "frames": ["2020-0220-151845_018098_movie_t-3.jpg", "2020-0220-151845_018098_movie_t-2.jpg", "2020-0220-151845_018098_movie_t-1.jpg", "2020-0220-151845_018098_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of van's lane change", "environment_perception": "An urban arterial with three lanes in the ego's direction runs between tall buildings, with a landscaped median on the right separating oncoming traffic; the pavement is dry and traffic is moderate. Ahead in the ego lane, a black van moves right to change lanes, leaving the ego lane as it merges. In the right lane slightly ahead, a gray box truck continues straight at a steady pace alongside the merging van, occupying the target lane. On the left sidewalk near the crosswalk, two pedestrians wait at the curb without entering the roadway. An overhead traffic signal shows green.", "hazard_reasoning": "There is a black van changing lanes from the ego lane to the right lane. This maneuver could intersect the ego vehicle's path unexpectedly, so the driver should be cautious of a sudden lane cut-in under this situation."}
{"id": "train_04493", "split": "train", "clip_key": "2020-0207-151349_014378_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "014378"}, "frames": ["2020-0207-151349_014378_movie_t-3.jpg", "2020-0207-151349_014378_movie_t-2.jpg", "2020-0207-151349_014378_movie_t-1.jpg", "2020-0207-151349_014378_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane road with smooth pavement carries heavy, stop-and-go traffic, and sunlight glare from ahead briefly reduces visibility. A white microvan directly ahead in the ego lane starts moving left into the adjacent left lane, constraining the ego car's pace as it changes over. To the right front, a large box truck in the neighboring lane is stopped and looms close, limiting the forward view. Along the far left, another freight truck is parallel and nearly stationary, narrowing the available space around the van. A low hedge lines the right edge of the roadway.", "hazard_reasoning": "There is a white van turning in the ego lane, to the left lane on the road ahead of the ego car. The van's lane change may unexpectedly obstruct your path, requiring you to follow the vehicle ahead."}
{"id": "train_04494", "split": "train", "clip_key": "2020-0207-151349_092416_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "092416"}, "frames": ["2020-0207-151349_092416_movie_t-3.jpg", "2020-0207-151349_092416_movie_t-2.jpg", "2020-0207-151349_092416_movie_t-1.jpg", "2020-0207-151349_092416_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial carries same-direction traffic beside a metal fence divider; the pavement is dry and sun glare from the right is strong, and flow is heavy and mostly stationary. A small white truck directly ahead in the ego lane is stopped and keeps the ego car at a standstill. To the right, a large dump truck in the adjacent lane is also halted, preventing any chance to pass. On the left near the curb, a white van lingers alongside the fence without merging. The fence and glare restrict sight lines.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because the light is red. The driver must stop to maintain a safe distance and avoid a collision at the red light."}
{"id": "train_04495", "split": "train", "clip_key": "titan_clip_1072_000558_movie", "source": {"subset": "titan", "scenario": "clip_1072", "frame": "000558"}, "frames": ["titan_clip_1072_000558_movie_t-3.jpg", "titan_clip_1072_000558_movie_t-2.jpg", "titan_clip_1072_000558_movie_t-1.jpg", "titan_clip_1072_000558_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway and no centerline runs between buildings on the left and a tree-lined fence on the right; the pavement is smooth and traffic is light with no oncoming vehicles visible. A white van stands at the left curb just ahead, encroaching into the ego lane and narrowing the passage. On the right side ahead, a pedestrian in a blue dress walks toward the ego vehicle along the road edge, close to the lane. Farther ahead on the left sidewalk, two pedestrians walk away along the frontage without entering the roadway. A bicycle is parked by the right fence near the verge.", "hazard_reasoning": "There is a pedestrian wearing a blue dress and walking toward the ego car, on the right side of the road. This pedestrian's path intersects the vehicle's lane and could lead to a potential collision if not navigated carefully."}
{"id": "train_04496", "split": "train", "clip_key": "2020-0226-140503_014990_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "014990"}, "frames": ["2020-0226-140503_014990_movie_t-3.jpg", "2020-0226-140503_014990_movie_t-2.jpg", "2020-0226-140503_014990_movie_t-1.jpg", "2020-0226-140503_014990_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the approaching van", "environment_perception": "An urban two-way street with one lane each way leads to a signalized intersection; the pavement looks dry and intact and traffic is light. The ego vehicle approaches under a green light. On the right side of the intersection, a black van in the oncoming lane drives toward the ego car and continues straight while staying in its lane. Ahead in the ego lane beyond the crosswalk, a white box van moves away at a modest pace, influencing the ego vehicle's speed. On the left near the curb, two cyclists ride toward the corner and start to cross at the zebra crossing, potentially entering the intersection as the ego arrives.", "hazard_reasoning": "There is a black van driving on the right side of the intersection towards the ego-car. The driver should yield to the black van to avoid a potential collision as it approaches from the right."}
{"id": "train_04497", "split": "train", "clip_key": "2020-0203-154554_004510_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "004510"}, "frames": ["2020-0203-154554_004510_movie_t-3.jpg", "2020-0203-154554_004510_movie_t-2.jpg", "2020-0203-154554_004510_movie_t-1.jpg", "2020-0203-154554_004510_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian ahead", "environment_perception": "An urban multi-lane, median-less two-way intersection with clear zebra markings and smooth pavement comes into view, and overall traffic is light with vehicles mostly stopped for the signal. Several pedestrians are ahead, crossing leftward across the ego lane at the crosswalk, so the ego vehicle waits. A pedestrian wearing black pants comes from the right and walks across in front of the vehicle in the marked crossing. Vehicles on the far side of the junction, including cars and a van, queue on the cross street and remain stationary without affecting the ego path. The pedestrian signal shows a green walk figure.", "hazard_reasoning": "There is a pedestrian wearing black pants and crossing the street, from the right side, ahead at the crosswalk. The driver should yield because the pedestrian is entering the intersection and may not be visible if speed is not reduced."}
{"id": "train_04498", "split": "train", "clip_key": "2020-0227-153144_032150_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "032150"}, "frames": ["2020-0227-153144_032150_movie_t-3.jpg", "2020-0227-153144_032150_movie_t-2.jpg", "2020-0227-153144_032150_movie_t-1.jpg", "2020-0227-153144_032150_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A busy urban arterial with two lanes in the same direction runs between tall buildings; the asphalt is smooth and overall flow is heavy with a slow-moving queue ahead. A white van directly ahead in the ego lane slows because congestion builds further up, constraining the ego vehicle's pace. In the adjacent right lane, a silver minivan slightly ahead crawls forward with the line of cars and remains in its lane. A black SUV at the front-right rolls alongside in the right lane amid the packed traffic.", "hazard_reasoning": "There is a white van slowing in front of the ego car in the ego lane because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision with the slowing van."}
{"id": "train_04499", "split": "train", "clip_key": "titan_clip_848_000018_movie", "source": {"subset": "titan", "scenario": "clip_848", "frame": "000018"}, "frames": ["titan_clip_848_000018_movie_t-3.jpg", "titan_clip_848_000018_movie_t-2.jpg", "titan_clip_848_000018_movie_t-1.jpg", "titan_clip_848_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with paving stones forms a single undivided lane between storefronts, the pavement looks good and no vehicles are seen, so traffic is effectively pedestrian only. Two youths on the right edge of the lane walk toward the camera and drift within the travel path, likely to constrain the ego vehicle's pace. Farther ahead in the center, several pedestrians cross the lane near the junction and may step into the ego path. A pedestrian wearing a black shirt stands on the left side farther away by the storefront, waiting and posing no immediate conflict. A red triangular stop sign is posted on a pole at the right corner near the intersection ahead.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, standing on the left side of the road, away from the ego car. The pedestrian could step into the path unexpectedly, requiring the driver to slow down to maintain safety."}
{"id": "train_04500", "split": "train", "clip_key": "titan_clip_51_000066_movie", "source": {"subset": "titan", "scenario": "clip_51", "frame": "000066"}, "frames": ["titan_clip_51_000066_movie_t-3.jpg", "titan_clip_51_000066_movie_t-2.jpg", "titan_clip_51_000066_movie_t-1.jpg", "titan_clip_51_000066_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid hitting the worker.", "environment_perception": "An urban two-way street with narrow lanes, no median, and sound pavement runs between low-rise buildings; traffic is light but briefly impeded by construction ahead. In the left ego lane, a utility truck with a boom is stopped near midblock, partly occupying the lane and forming a work zone that constrains the ego vehicle's approach. Ahead near the truck, a construction worker in a green suit stands in the middle of the road and signals instructions to drivers, guiding passage around the obstruction. Along the left curb, additional crew and equipment remain stationary beside the site. The oncoming lane to the right is clear, and no signals or posted speeds are visible.", "hazard_reasoning": "The construction worker in a green suit is standing in the middle of the road because he is giving drivers some instructions. The driver should slow down to safely navigate around the worker instructing traffic."}
{"id": "train_04501", "split": "train", "clip_key": "titan_clip_1296_000102_movie", "source": {"subset": "titan", "scenario": "clip_1296", "frame": "000102"}, "frames": ["titan_clip_1296_000102_movie_t-3.jpg", "titan_clip_1296_000102_movie_t-2.jpg", "titan_clip_1296_000102_movie_t-1.jpg", "titan_clip_1296_000102_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road runs under an elevated expressway, with one lane each direction divided by double yellow lines and smooth pavement; the route curves right beside a fenced construction site with cranes, and traffic is light. An oncoming black sedan approaches on the right, tracking the curve and passing close to the centerline as it meets the ego vehicle in the opposing lane. A silver van follows behind it in the oncoming lane, continuing straight through the bend at a moderate pace while keeping its position. The ego lane ahead is clear, and no salient signals or speed signs are visible.", "hazard_reasoning": "Although no immediate hazards or other road users are present, the upcoming curve reduces sight distance, so the driver should stay alert."}
{"id": "train_04502", "split": "train", "clip_key": "2020-0226-101332_060875_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "060875"}, "frames": ["2020-0226-101332_060875_movie_t-3.jpg", "2020-0226-101332_060875_movie_t-2.jpg", "2020-0226-101332_060875_movie_t-1.jpg", "2020-0226-101332_060875_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban arterial with at least three same-direction lanes and no median is shown; the pavement is dry and traffic is moderate, bunching at a signalized intersection. A gray van directly ahead in the ego lane is stopped because the overhead traffic light shows red, holding the ego vehicle's path. To the right, a white van in the adjacent lane slows and comes to a stop alongside under the same red signal. In the left lane, a small white van and a red taxi queue slightly ahead and creep forward in line without encroaching into the ego lane.", "hazard_reasoning": "There is a gray van stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to maintain safe distance and avoid a collision with the halted van."}
{"id": "train_04503", "split": "train", "clip_key": "2020-0214-145407_031523_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0214-145407_031523_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0214-145407_031523_movie_t-3_augB1.jpg", "2020-0214-145407_031523_movie_t-2_augB1.jpg", "2020-0214-145407_031523_movie_t-1_augB1.jpg", "2020-0214-145407_031523_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs beneath an elevated structure, with a chevron-marked gore separating a right-side lane; the pavement looks good and traffic is slow with heavy queues ahead. A black sedan directly in front in the ego lane slows because of congestion and sets the ego vehicle's pace. Slightly ahead to the left, a small black van in the adjacent lane creeps forward parallel to the ego car while staying in its lane. On the right, a dark car moves along the parallel lane beyond the chevrons and advances slowly with the queue. On the left sidewalk near a bus stop, several pedestrians wait and remain off the roadway.", "hazard_reasoning": "There is a black sedan slowing down in front of the ego-car, in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a collision under congested conditions."}
{"id": "train_04504", "split": "train", "clip_key": "2020-0205-152530_019531_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "019531"}, "frames": ["2020-0205-152530_019531_movie_t-3.jpg", "2020-0205-152530_019531_movie_t-2.jpg", "2020-0205-152530_019531_movie_t-1.jpg", "2020-0205-152530_019531_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial leads to a wide signalized intersection with smooth pavement and light traffic; a low planted median separates opposing traffic to the right. A gray boxy van ahead in the left through lane continues straight across the junction and modestly sets the ego vehicle's pace. A black van in the right lane ahead drives away from the ego car, traveling straight and remaining clear of the ego lane. Several pedestrians wait on the left sidewalk at the crosswalk edge without stepping into the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04505", "split": "train", "clip_key": "2020-0225-102455_079537_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "079537"}, "frames": ["2020-0225-102455_079537_movie_t-3.jpg", "2020-0225-102455_079537_movie_t-2.jpg", "2020-0225-102455_079537_movie_t-1.jpg", "2020-0225-102455_079537_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection, with painted medians and short bollards dividing lanes; the asphalt is worn with several manhole covers and traffic is light to moderate. A white van ahead in the ego lane drives away from the ego car at a steady pace, leading the movement. To its right, a dark sedan continues straight in the adjacent lane slightly ahead, running parallel without entering the ego path. Farther ahead in the right-side lanes, a few cars proceed toward the junction with ample spacing. Overhead blue direction signs indicate Route 15 toward Kawasaki and Omori.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. The driver should follow the vehicle ahead to maintain a safe distance and prevent collision if it brakes suddenly."}
{"id": "train_04506", "split": "train", "clip_key": "2020-0225-102455_086802_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_086802_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_086802_movie_t-3_augB1.jpg", "2020-0225-102455_086802_movie_t-2_augB1.jpg", "2020-0225-102455_086802_movie_t-1_augB1.jpg", "2020-0225-102455_086802_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down and maintain distance", "environment_perception": "An urban arterial with two same-direction lanes and painted dividers has smooth pavement and slow, congested traffic. Ahead in the ego lane, a white hatchback slows because of traffic congestion ahead, constraining the ego car's pace. To the right, a white box truck runs alongside in the adjacent lane at low speed, limiting any lane change. Farther ahead in the same direction, a bus and a dump truck queue and creep forward, contributing to the backup. Pedestrians walk along the left sidewalk beside storefronts but do not approach the roadway.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down and maintain a safe distance to adapt to the reduced speed and prevent a collision."}
{"id": "train_04507", "split": "train", "clip_key": "2020-0129-105040_096002_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "096002"}, "frames": ["2020-0129-105040_096002_movie_t-3.jpg", "2020-0129-105040_096002_movie_t-2.jpg", "2020-0129-105040_096002_movie_t-1.jpg", "2020-0129-105040_096002_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban divided road with two same-direction lanes on the left and oncoming traffic separated by a fenced median on the right has dry, well?arked pavement and moderate flow that bunches at a signalized intersection. Immediately ahead in the ego lane, a white pickup is stopped behind a blue box truck, queuing because the traffic light ahead is red and holding the ego vehicle. Farther ahead in the same lane, the blue truck also waits at the line, blocking forward movement. In the adjacent left lane, a black sedan and a silver car creep past the stopped queue toward the intersection.", "hazard_reasoning": "There is a white pickup truck stopped in the ego lane, because of a red traffic light. Stop to avoid collision with the halted vehicle at the light."}
{"id": "train_04508", "split": "train", "clip_key": "titan_clip_553_000594_movie", "source": {"subset": "titan", "scenario": "clip_553", "frame": "000594"}, "frames": ["titan_clip_553_000594_movie_t-3.jpg", "titan_clip_553_000594_movie_t-2.jpg", "titan_clip_553_000594_movie_t-1.jpg", "titan_clip_553_000594_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street with one narrow lane per direction runs between mid-rise buildings; the pavement is smooth and traffic is light as the ego approaches a small intersection. On the left of the ego lane, a blue and white truck is parked with its rear open while being unloaded, and workers stand beside it, narrowing the path. An oncoming white sedan approaches along the right side and passes near the center line, reducing clearance as it comes by. A pedestrian crosses the far intersection from left to right, visible ahead.", "hazard_reasoning": "There is a blue and white truck parked on the left side of the road, because it is being unloaded. This truck partially obstructs the lane, limiting visibility and requiring the driver to carefully manoeuvre around it."}
{"id": "train_04509", "split": "train", "clip_key": "2020-0207-101955_024803_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "024803"}, "frames": ["2020-0207-101955_024803_movie_t-3.jpg", "2020-0207-101955_024803_movie_t-2.jpg", "2020-0207-101955_024803_movie_t-1.jpg", "2020-0207-101955_024803_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial runs between mid-rise buildings, with one lane per direction and flexible posts forming a narrow median; the pavement looks smooth and traffic is moderate with a brief slowdown ahead. A brown truck directly ahead in the ego lane slows as traffic queues in front of it, constraining the ego vehicle's pace. To the right, a stream of oncoming cars, including a white sedan near the camera, proceeds past, separated from the ego lane by the posts and not merging. Overhead blue direction signs are visible, and a 50 marking appears on the roadway just beyond a zebra crossing at the foreground.", "hazard_reasoning": "There is a brown truck slowing in the ego-car lane, because of traffic congestion ahead. The truck's reduced speed signals slowing traffic, increasing collision risk if you maintain speed, so the driver should slow down."}
{"id": "train_04510", "split": "train", "clip_key": "2020-0206-101736_031471_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "031471"}, "frames": ["2020-0206-101736_031471_movie_t-3.jpg", "2020-0206-101736_031471_movie_t-2.jpg", "2020-0206-101736_031471_movie_t-1.jpg", "2020-0206-101736_031471_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multilane road carries moderate traffic; the ego travels in the left of two same-direction lanes, with opposing flow on the right separated by a painted chevron median, and the pavement is in good condition. Farther ahead in the ego lane, a white sedan slows because of congestion ahead, which sets the pace for traffic. Immediately ahead of the ego car, a white SUV in the same lane rolls slowly as it follows that sedan, constraining the ego vehicle's speed. In the opposing lane to the right, a gray sedan approaches steadily past the median markings without affecting the ego path.", "hazard_reasoning": "There is a white sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. This indicates that traffic is congested ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_04511", "split": "train", "clip_key": "titan_clip_1204_000324_movie", "source": {"subset": "titan", "scenario": "clip_1204", "frame": "000324"}, "frames": ["titan_clip_1204_000324_movie_t-3.jpg", "titan_clip_1204_000324_movie_t-2.jpg", "titan_clip_1204_000324_movie_t-1.jpg", "titan_clip_1204_000324_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban street with a single narrow travel lane curves left, with no median and smooth pavement; traffic is light. A cyclist ahead in the middle of the lane rides away from the ego vehicle, holding a central position because cones and a work area obstruct the right side, and thus the cyclist governs the ego vehicle's pace. On the right, a white work truck is parked within the coned work zone beside scaffolding, further narrowing the lane. A construction worker stands near a signboard by the cones on the right, remaining at the edge of the carriageway.", "hazard_reasoning": "There is a cyclist cycling away from the ego car in the middle of the road because of obstruction on the right side of the road. The cyclist's position in the lane reduces passing space and increases collision risk, so the driver should slow down to maintain a safe distance."}
{"id": "train_04512", "split": "train", "clip_key": "2020-0214-145407_003094_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "003094"}, "frames": ["2020-0214-145407_003094_movie_t-3.jpg", "2020-0214-145407_003094_movie_t-2.jpg", "2020-0214-145407_003094_movie_t-1.jpg", "2020-0214-145407_003094_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs under an elevated structure, with smooth pavement and moderate, steadily moving traffic toward a signalized crosswalk. The traffic light ahead is green, and a 50 speed limit sign is visible on the left; temporary works and barriers line the left sidewalk. A white kei van with a green roof is in the right lane slightly ahead, accelerating away from the ego car through the green light. A white van farther ahead in the ego lane continues straight at a steady pace in our path. Pedestrians at the left-side crosswalk wait by the curb, and no other immediate hazards are visible.", "hazard_reasoning": "There is a white van driving in the right lane, away from the ego car, because of green traffic lights. The green signal and moving van indicate that vehicles may accelerate or change speed, so you should be cautious of the van ahead."}
{"id": "train_04513", "split": "train", "clip_key": "titan_clip_994_000204_movie", "source": {"subset": "titan", "scenario": "clip_994", "frame": "000204"}, "frames": ["titan_clip_994_000204_movie_t-3.jpg", "titan_clip_994_000204_movie_t-2.jpg", "titan_clip_994_000204_movie_t-1.jpg", "titan_clip_994_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial alley with a single narrow shared lane is paved with block tiles and lacks a median or clear lane markings; the surface looks intact and motor traffic is absent. On the right ahead, a pedestrian in a white shirt carrying a handbag walks away from the ego vehicle along the roadway edge, staying within the travel path. On the left near the camera, a man in a white shirt walks toward the ego in the lane and may constrain the vehicle's pace. Farther ahead in the center, a few pedestrians proceed away along the middle of the street, occupying the path. No salient signals or signs appear.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and carrying a handbag, walking on the right side of the road, away from the ego car. This pedestrian is close to the vehicle's path and may change direction unexpectedly, so the driver should manoeuvre carefully around the pedestrian."}
{"id": "train_04514", "split": "train", "clip_key": "2020-0203-114632_005185_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005185"}, "frames": ["2020-0203-114632_005185_movie_t-3.jpg", "2020-0203-114632_005185_movie_t-2.jpg", "2020-0203-114632_005185_movie_t-1.jpg", "2020-0203-114632_005185_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane two-way street with a painted centerline has good pavement and moderate flow constrained by a roadside work zone. Cones narrow the ego lane and a zebra crossing spans the foreground. A construction worker wearing a helmet stands directly ahead in front of the ego car at the crosswalk, signaling with a baton to hold the ego as he directs alternating traffic. A small white work truck is parked just ahead in the ego lane beside the cones, remaining stationary and blocking part of the path. An oncoming city bus in the right-hand lane proceeds past the work area, with a following truck approaching behind it, using the open gap while the ego waits. No traffic signal is visible.", "hazard_reasoning": "There is a construction worker wearing a helmet and standing in front of the ego car, because he is directing traffic. The driver should stop to yield to the worker and navigate safely through the construction zone."}
{"id": "train_04515", "split": "train", "clip_key": "2020-0205-103411_008565_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "008565"}, "frames": ["2020-0205-103411_008565_movie_t-3.jpg", "2020-0205-103411_008565_movie_t-2.jpg", "2020-0205-103411_008565_movie_t-1.jpg", "2020-0205-103411_008565_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the construction sign", "environment_perception": "An urban two-way road curves left between tall buildings; the pavement is smooth, the oncoming lane is red-paved and separated by a white hatched buffer, and traffic is light to moderate. On the left edge close to the ego lane, a pedestrian walks out from beside a parked SUV and continues along the lane line near the ego path. Ahead in the ego lane, a small flatbed truck slows at a roadside work area, constraining the pace, and a red arrow construction sign on the left directs vehicles past it. Oncoming flow includes a white mini-truck approaching in the red lane and another truck parked near the right curb, while additional parked vehicles on the left narrow the usable lane.", "hazard_reasoning": "There is a red arrow construction sign on the left side of the road. The sign indicates upcoming road works that may affect lane usage, so the driver should be cautious."}
{"id": "train_04516", "split": "train", "clip_key": "titan_clip_1287_000426_movie", "source": {"subset": "titan", "scenario": "clip_1287", "frame": "000426"}, "frames": ["titan_clip_1287_000426_movie_t-3.jpg", "titan_clip_1287_000426_movie_t-2.jpg", "titan_clip_1287_000426_movie_t-1.jpg", "titan_clip_1287_000426_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the obstacle", "environment_perception": "An urban scene unfolds on a narrow two-way street with single lanes, no median, and smooth pavement, with light traffic throughout. The ego vehicle travels in the left lane and slows at a left-side pinch point formed by a guardrail. A yellow sedan directly ahead in the ego lane is stopped beside this obstacle, blocking the path and constraining the ego car's pace. On the right edge of the roadway, an oncoming cyclist rides toward the camera near the curb, threading past the narrow section and demanding lateral clearance. Two pedestrians walk toward the camera along the right sidewalk, remaining off the roadway.", "hazard_reasoning": "There is a yellow sedan stopped in front of the ego car on an urban road because of the obstacle on the left side. The driver should carefully manoeuvre around the obstacle to maintain safe spacing and avoid sudden braking."}
{"id": "train_04517", "split": "train", "clip_key": "2020-0227-104226_036210_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "036210"}, "frames": ["2020-0227-104226_036210_movie_t-3.jpg", "2020-0227-104226_036210_movie_t-2.jpg", "2020-0227-104226_036210_movie_t-1.jpg", "2020-0227-104226_036210_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road with a solid yellow centerline runs between low-rise buildings; the asphalt is dry and intact, and traffic is moderate with steady movement. Ahead in the left-side ego lane, a white box truck drives away as the space in front of it is clear, steadily increasing the gap. In the opposing lane to the right, a white minivan followed by another car approaches along the centerline, continuing past in its lane. On the right sidewalk, a person pushing a stroller proceeds near a side street while staying off the roadway. A blue straight-ahead-only sign stands on the left, and no signals or unusual restrictions are visible.", "hazard_reasoning": "There is a white truck driving away from the ego car, in the ego lane, because the road ahead is clear, in front of the truck. The driver should follow the vehicle ahead to maintain a safe distance and be prepared for any sudden speed changes."}
{"id": "train_04518", "split": "train", "clip_key": "titan_clip_752_000438_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_752_000438_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_752_000438_movie_t-3_augB1.jpg", "titan_clip_752_000438_movie_t-2_augB1.jpg", "titan_clip_752_000438_movie_t-1_augB1.jpg", "titan_clip_752_000438_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow street with a single, dividerless lane runs between buildings, with bollards separating sidewalks; pavement is smooth and traffic is very light with no vehicles ahead. A pedestrian in a white shirt and black pants crosses ahead from the left toward the right side of the road, moving through the ego vehicle's path and occupying it briefly. On the right sidewalk near the curb, a woman walks toward the camera beside the bollards, staying outside the lane. Farther ahead near the bright junction, a few pedestrians linger at the sidewalk edges but do not enter the roadway. A parked orange scooter sits on the right by a storefront.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, crossing to the right side of the road. The pedestrian is moving into the vehicle's path ahead, requiring reduced speed to ensure safe passage."}
{"id": "train_04519", "split": "train", "clip_key": "2020-0227-104226_015801_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "015801"}, "frames": ["2020-0227-104226_015801_movie_t-3.jpg", "2020-0227-104226_015801_movie_t-2.jpg", "2020-0227-104226_015801_movie_t-1.jpg", "2020-0227-104226_015801_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with dry pavement and clear lane markings; traffic is slow and stop-and-go. A white box truck directly ahead in the ego lane starts to roll forward as the queue moves, setting the pace for the ego car. In the adjacent lane to the left, a white minivan a short distance ahead creeps forward in parallel, remaining in its lane. A black sedan alongside on the left edges ahead in the neighboring lane, reducing opportunities for the ego vehicle to change lanes. Guardrails and columns constrain space along the right edge.", "hazard_reasoning": "There is a white truck starting to move forward in the ego lane, in front of the ego car, because traffic ahead is moving. Slow down to adjust speed safely as the truck accelerates and spacing changes."}
{"id": "train_04520", "split": "train", "clip_key": "titan_clip_1065_000480_movie", "source": {"subset": "titan", "scenario": "clip_1065", "frame": "000480"}, "frames": ["titan_clip_1065_000480_movie_t-3.jpg", "titan_clip_1065_000480_movie_t-2.jpg", "titan_clip_1065_000480_movie_t-1.jpg", "titan_clip_1065_000480_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "A narrow urban street with smooth asphalt and no lane markings runs between storefronts, with curbs and a short railing on the right and no median. Traffic is light with no moving vehicles in view. Ahead on the right, two pedestrians walk away along the curbside beside the railing, slightly encroaching toward the travel lane and limiting space for the ego vehicle to pass. Near the left curb close to the ego vehicle, another pedestrian walks toward it on the sidewalk and remains clear of the lane. Farther ahead on the left, a white truck is parked with crates and tarps around it, forming a curbside work area that narrows the passable roadway.", "hazard_reasoning": "There is a white truck parked on the left side of the road because there are crates and tarps around it. The obstruction creates a blind spot ahead and limits visibility, so the driver should carefully manoeuvre around it."}
{"id": "train_04521", "split": "train", "clip_key": "titan_clip_687_000222_movie", "source": {"subset": "titan", "scenario": "clip_687", "frame": "000222"}, "frames": ["titan_clip_687_000222_movie_t-3.jpg", "titan_clip_687_000222_movie_t-2.jpg", "titan_clip_687_000222_movie_t-1.jpg", "titan_clip_687_000222_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with no center divider runs between storefronts, the pavement smooth and marked Zone 30, with very light vehicle traffic but heavy pedestrian activity. On the left near the camera, a male pedestrian carrying a backpack walks toward the ego car along the curb and may edge into the lane. Ahead near the center-left, a small group of pedestrians stands at the roadside with a couple of people stepping slightly into the lane, constraining space. In the middle distance, another pedestrian walks across the roadway toward the left, potentially entering the ego path. The 30 speed marking is clearly visible on the pavement, and cones by a shop on the right tighten the roadside margin.", "hazard_reasoning": "There is a male pedestrian carrying a backpack, walking on the left side of the road, toward the ego car. He is entering the vehicle's path and may step into the lane, so the driver should manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_04522", "split": "train", "clip_key": "2020-0212-150403_018029_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "018029"}, "frames": ["2020-0212-150403_018029_movie_t-3.jpg", "2020-0212-150403_018029_movie_t-2.jpg", "2020-0212-150403_018029_movie_t-1.jpg", "2020-0212-150403_018029_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multi-lane road with at least two lanes in the same direction, no median visible, and dry pavement; traffic is slow with short stops. Directly ahead, a black SUV is stopped in the ego lane because of congestion, holding the ego vehicle at a standstill. Along the left curb beside the ego car, a silver minivan in the adjacent lane creeps forward, parallel to the ego vehicle. On the left sidewalk, a few pedestrians walk past the shops but remain off the carriageway. Overhead green guide signs are visible further ahead.", "hazard_reasoning": "A black SUV is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver needs to stop immediately to avoid a collision with the halted vehicle ahead."}
{"id": "train_04523", "split": "train", "clip_key": "titan_clip_598_000306_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_598_000306_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_598_000306_movie_t-3_augB1.jpg", "titan_clip_598_000306_movie_t-2_augB1.jpg", "titan_clip_598_000306_movie_t-1_augB1.jpg", "titan_clip_598_000306_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial side street with a narrow two-way carriageway and no centerline unfolds ahead; the asphalt is smooth, there is no median, and traffic is light with no moving vehicles. Ahead along the right edge, a man in a white shirt, black pants, and a cap walks toward the ego-vehicle while carrying a bag, using the roadway because the sidewalk is crowded with parked bicycles and pedestrians, and he encroaches into the travel lane. At the near right, another pedestrian passes close to the curb, partly in the lane, which tightens clearance. No traffic signals are visible. Numerous parked bicycles, cones, and storefront displays line both sides, further narrowing the usable lane.", "hazard_reasoning": "There is a tall man, wearing a white shirt, black pants, and a cap, carrying a bag, walking on the right side of the road towards the ego-car, because the sidewalk is congested. The driver should carefully manoeuvre around him to avoid collision."}
{"id": "train_04524", "split": "train", "clip_key": "titan_clip_477_000312_movie", "source": {"subset": "titan", "scenario": "clip_477", "frame": "000312"}, "frames": ["titan_clip_477_000312_movie_t-3.jpg", "titan_clip_477_000312_movie_t-2.jpg", "titan_clip_477_000312_movie_t-1.jpg", "titan_clip_477_000312_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "be aware of the cyclist", "environment_perception": "A narrow urban shopping street with stone-paved surface and no centerline runs between storefronts, with bollards separating sidewalks from the roadway; traffic is light. Ahead near the middle-right, a cyclist rides toward the ego vehicle along the right side of the road, approaching in the opposing direction. On the left sidewalk, several pedestrians walk close to the curb, including one very near the edge while looking at a phone, alongside the ego vehicle's path. At the right foreground, a dark van is stopped at the curb with its front intruding slightly into the lane, narrowing the passage.", "hazard_reasoning": "There is a cyclist cycling on the right side of the road, toward the ego car. The driver should be aware because the cyclist may merge into the vehicle's lane ahead."}
{"id": "train_04525", "split": "train", "clip_key": "titan_clip_389_000528_movie", "source": {"subset": "titan", "scenario": "clip_389", "frame": "000528"}, "frames": ["titan_clip_389_000528_movie_t-3.jpg", "titan_clip_389_000528_movie_t-2.jpg", "titan_clip_389_000528_movie_t-1.jpg", "titan_clip_389_000528_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian safely.", "environment_perception": "The scene is a narrow urban commercial street with block-paved surface, no center divider, and light traffic with no cars moving ahead. On the right edge close to the camera, a pedestrian carrying handbags and a backpack walks away from the ego car along the curb, staying near the storefronts but close to the travel path. Ahead on the left, a small scooter stands near the curb and may pull into the lane. Farther ahead, another pedestrian walks along the middle of the street in the same direction, modestly constraining the available space. Shop signboards and displays jut into the right margin and slightly narrow the roadway.", "hazard_reasoning": "There is a pedestrian carrying handbags and a backpack, walking on the right side of the road, away from the ego car. The driver should manoeuvre around the pedestrian safely to avoid potential conflict."}
{"id": "train_04526", "split": "train", "clip_key": "2020-0220-102630_046771_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "046771"}, "frames": ["2020-0220-102630_046771_movie_t-3.jpg", "2020-0220-102630_046771_movie_t-2.jpg", "2020-0220-102630_046771_movie_t-1.jpg", "2020-0220-102630_046771_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the same direction runs straight between mid-rise buildings, the ego vehicle in the rightmost lane beside a concrete barrier and guardrail; the pavement is smooth and traffic is moderate. A white box truck directly ahead in the ego lane slows because of congestion further ahead, setting the ego vehicle's pace. In the adjacent left lane, a black van slightly ahead continues straight at a steady speed and gradually overtakes, limiting an immediate lane change to the left. Overhead direction signs appear on a gantry in the distance.", "hazard_reasoning": "There is a white truck slowing down in the ego lane because of traffic congestion ahead. The driver should reduce speed to maintain a safe following distance and adapt to the congested flow."}
{"id": "train_04527", "split": "train", "clip_key": "titan_clip_1199_000366_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1199_000366_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1199_000366_movie_t-3_augB1.jpg", "titan_clip_1199_000366_movie_t-2_augB1.jpg", "titan_clip_1199_000366_movie_t-1_augB1.jpg", "titan_clip_1199_000366_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with no median and smooth pavement shows light traffic as the road continues straight and then bends slightly right, lined closely by buildings and bicycles on the left. A pedestrian in gray pants and a gray shirt carrying a shoulder bag walks away in the ego lane to maneuver around a parked car on the right, temporarily occupying the ego-vehicle's path. Another person stands near the same parked silver car at the curb on the right but stays out of the lane. No prominent traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian in gray pants and a gray shirt, carrying a shoulder bag, walking away from the ego-car in the ego lane because he is maneuvering around a parked car. The pedestrian is entering your lane to avoid the parked vehicle, so you should carefully manoeuvre around the pedestrian to prevent a collision."}
{"id": "train_04528", "split": "train", "clip_key": "2020-0131-103016_085535_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "085535"}, "frames": ["2020-0131-103016_085535_movie_t-3.jpg", "2020-0131-103016_085535_movie_t-2.jpg", "2020-0131-103016_085535_movie_t-1.jpg", "2020-0131-103016_085535_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road with mid-rise buildings and dry, smooth pavement is shown, and traffic is moderate as the ego car nears a signalized intersection. A small white van ahead in the ego lane pulls away through the junction under a green light, gradually increasing the gap. To its right, a larger white van in the adjacent same-direction lane continues straight and slightly ahead, remaining outside the ego path. At the left curb by the crosswalk, several pedestrians and a woman with a bicycle wait, stationary and yielding to traffic. In the opposite lanes to the right, a white truck approaches the intersection, continuing without affecting the ego vehicle.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04529", "split": "train", "clip_key": "2020-0131-135401_019156_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "019156"}, "frames": ["2020-0131-135401_019156_movie_t-3.jpg", "2020-0131-135401_019156_movie_t-2.jpg", "2020-0131-135401_019156_movie_t-1.jpg", "2020-0131-135401_019156_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane road runs under an elevated structure, with smooth pavement and a splitter island marked by plastic posts; traffic is moderate, with a freely moving stream in the left lane and a slow queue to the right. A black hatchback ahead in the ego lane accelerates away, opening a gap as the flow moves forward. To the right, a white sedan and a large truck advance slowly in their adjacent lane, remaining separated from the ego path by the posts and not merging. On the left sidewalk, several pedestrians and a cyclist travel along the railing without approaching the roadway. Directional signs are visible near the overpass, but no active signal is in view.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04530", "split": "train", "clip_key": "2020-0220-102630_027521_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "027521"}, "frames": ["2020-0220-102630_027521_movie_t-3.jpg", "2020-0220-102630_027521_movie_t-2.jpg", "2020-0220-102630_027521_movie_t-1.jpg", "2020-0220-102630_027521_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction and no median, smooth pavement, and moderate flow narrows alongside buildings. A large white box truck directly ahead in the left ego lane slows to a near stop by the curb, constraining the ego car's pace. An oncoming white van approaches in the right lane, which limits any chance to pass around the truck. Farther ahead, another oncoming truck creeps near the centerline, further tightening the gap ahead. A speed limit sign showing 50 is posted on the left.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_04531", "split": "train", "clip_key": "2020-0205-152530_032032_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "032032"}, "frames": ["2020-0205-152530_032032_movie_t-3.jpg", "2020-0205-152530_032032_movie_t-2.jpg", "2020-0205-152530_032032_movie_t-1.jpg", "2020-0205-152530_032032_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban boulevard with four wide lanes in the same direction runs between trees on the left and tall buildings on the right; the pavement is smooth and traffic is light to moderate with no notable changes through the clip. A white hatchback ahead slightly left travels straight at a steady pace, effectively setting the ego vehicle's speed. Farther ahead in the middle lane, a gray sedan maintains lane and spacing while continuing straight. In the outer right lanes, a black van followed by a white van proceeds parallel and gradually overtakes on the right.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04532", "split": "train", "clip_key": "titan_clip_1382_000186_movie", "source": {"subset": "titan", "scenario": "clip_1382", "frame": "000186"}, "frames": ["titan_clip_1382_000186_movie_t-3.jpg", "titan_clip_1382_000186_movie_t-2.jpg", "titan_clip_1382_000186_movie_t-1.jpg", "titan_clip_1382_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian pushing cart", "environment_perception": "An urban shopping street with a narrow single mixed-traffic lane and no divider runs between storefronts, the pavement smooth but cramped, and motor traffic is light. Ahead on the right edge, a man in a uniform pushes a red wheeled cart toward the ego vehicle along the curb and may encroach on the travel path. Several pedestrians walk ahead within the roadway toward and away from the camera near the centerline, occupying the lane and constraining the approach. Another pedestrian on the right walks in the same direction beside the shops, staying close to the curb. A straight arrow is painted on the roadway indicating the forward direction. Storefront displays, A-frame signs, a small ramp, and a few cones project into the road and narrow the usable width.", "hazard_reasoning": "There is a man wearing a uniform, pushing a wheeled cart, and walking on the right side of the road, toward the ego car. The driver should be aware because the pedestrian pushing the cart may enter the vehicle path unexpectedly, posing a collision risk."}
{"id": "train_04533", "split": "train", "clip_key": "titan_clip_719_000162_movie", "source": {"subset": "titan", "scenario": "clip_719", "frame": "000162"}, "frames": ["titan_clip_719_000162_movie_t-3.jpg", "titan_clip_719_000162_movie_t-2.jpg", "titan_clip_719_000162_movie_t-1.jpg", "titan_clip_719_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street without lane markings or a median, lined with shops and utility poles, has smooth pavement and very light traffic with no other cars visible. A bicyclist rides ahead in the middle of the roadway, moving away along the ego vehicle's path and subtly constraining pace. Farther ahead on the right, a pedestrian carrying an umbrella stands at the curb and may step into the lane. Another pedestrian walks along the left side in the distance, remaining on the sidewalk and not interacting. No prominent traffic signals or regulatory signs are visible.", "hazard_reasoning": "There is a pedestrian carrying an umbrella, standing on the right side of the road. The driver should carefully manoeuvre around the pedestrian because they may step into the lane unexpectedly."}
{"id": "train_04534", "split": "train", "clip_key": "2020-0210-101957_020890_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_020890_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_020890_movie_t-3_augB1.jpg", "2020-0210-101957_020890_movie_t-2_augB1.jpg", "2020-0210-101957_020890_movie_t-1_augB1.jpg", "2020-0210-101957_020890_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction and a metal fence median separating oncoming traffic stretches ahead on smooth pavement; flow is moderate with a slow queue forming up the road. A black motorcycle ahead in the ego left lane slows because of traffic congestion ahead, constraining the ego car's pace. Two box trucks farther ahead in the right lane move slowly and help create the bottleneck. A white SUV slightly ahead to the right continues in the right lane near the ego vehicle, limiting chances to merge. Pedestrians on the left sidewalk stand and walk along the curb without entering the roadway.", "hazard_reasoning": "There is a black motorcycle slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The black motorcycle is reducing speed due to congestion ahead, so you should slow down to maintain a safe following distance and avoid collision."}
{"id": "train_04535", "split": "train", "clip_key": "titan_clip_124_000528_movie", "source": {"subset": "titan", "scenario": "clip_124", "frame": "000528"}, "frames": ["titan_clip_124_000528_movie_t-3.jpg", "titan_clip_124_000528_movie_t-2.jpg", "titan_clip_124_000528_movie_t-1.jpg", "titan_clip_124_000528_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban canyon setting on a narrow two-way road with one lane per direction and no median, smooth asphalt, and light traffic as the vehicle approaches a marked crosswalk at an intersection. Ahead in the ego lane, a group of pedestrians crosses left to right through the crosswalk, occupying the path and controlling the vehicle's pace. On the right edge, a man waits at the curb while a woman with an umbrella steps onto the crossing near the lane. Farther ahead beyond the crosswalk, a small van in the same direction proceeds slowly near the center of the lane. A blue parking sign is visible on the right, with no signal heads in view.", "hazard_reasoning": "No hazards are present and the intersection is clear of vehicles or obstacles, so you can proceed as normal."}
{"id": "train_04536", "split": "train", "clip_key": "2020-0131-135401_016494_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "016494"}, "frames": ["2020-0131-135401_016494_movie_t-3.jpg", "2020-0131-135401_016494_movie_t-2.jpg", "2020-0131-135401_016494_movie_t-1.jpg", "2020-0131-135401_016494_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene on a dry, smooth two-lane one-way road runs alongside a concrete barrier on the right with buildings and a blue-painted curb lane on the left; traffic is light and steady. A black hatchback ahead in the ego lane travels at a constant speed and effectively sets the pace. To its left, a small cargo truck near the curb is slow or stopped in the blue-marked shoulder, so it may merge into the travel lane. Farther ahead, a few same-direction vehicles continue under distant structures without affecting the ego path. No salient traffic signals or speed signs are visible, and no pedestrians or cyclists appear near the roadway; the right-side barrier limits view to that side but no hazards are evident.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04537", "split": "train", "clip_key": "titan_clip_1271_000240_movie", "source": {"subset": "titan", "scenario": "clip_1271", "frame": "000240"}, "frames": ["titan_clip_1271_000240_movie_t-3.jpg", "titan_clip_1271_000240_movie_t-2.jpg", "titan_clip_1271_000240_movie_t-1.jpg", "titan_clip_1271_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the object", "environment_perception": "An urban neighborhood street with a single narrow two-way carriageway and no median is seen ahead; the pavement is smooth and dry, and traffic is light with no vehicles present. Three pedestrians in white shirts carrying backpacks walk away from the ego car along the left edge ahead, close to the curb and potentially limiting passing space. Farther ahead on the right, a person stands beside a bicycle near a side street, remaining outside the lane. Several parked bicycles on the left and a curbside planter with a signboard on the right tighten the roadway but do not intrude into the path.", "hazard_reasoning": "There are three pedestrians wearing white shirts, carrying backpacks, walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around the small object to prevent a collision."}
{"id": "train_04538", "split": "train", "clip_key": "2020-0207-101955_088035_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "088035"}, "frames": ["2020-0207-101955_088035_movie_t-3.jpg", "2020-0207-101955_088035_movie_t-2.jpg", "2020-0207-101955_088035_movie_t-1.jpg", "2020-0207-101955_088035_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of truck changing lanes", "environment_perception": "An urban multilane road runs under an elevated expressway, with three straight-through lanes and smooth pavement; traffic is moderate and moving slowly toward a signalized junction. A blue flatbed truck directly ahead in the ego lane changes left into the adjacent lane, creating space in front of the ego vehicle as it merges alongside. A tall white box truck slightly ahead to the right continues straight at low speed and constrains the forward pace while obscuring part of the view ahead. On the far left, a long flatbed carrying construction machinery rolls forward slowly near the ego's side, remaining parallel.", "hazard_reasoning": "There is a blue truck changing lanes from the ego lane to the left lane. This maneuver may bring the truck into the driver's path, so maintain awareness to avoid a potential collision."}
{"id": "train_04539", "split": "train", "clip_key": "2020-0210-101957_048557_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "048557"}, "frames": ["2020-0210-101957_048557_movie_t-3.jpg", "2020-0210-101957_048557_movie_t-2.jpg", "2020-0210-101957_048557_movie_t-1.jpg", "2020-0210-101957_048557_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection with smooth pavement and painted lane lines but no physical median; traffic is moderate and queued at the red light. A black vehicle directly ahead in the ego lane stands still because the signal is red, holding the ego car at the stop line. To the left, a red boxy van in the adjacent same-direction lane also waits at the light alongside the black car. On the far right curb, a cyclist moves slowly along the sidewalk near a small cone-marked area without entering the roadway. An overhead viaduct spans the junction, and the traffic signal ahead shows red.", "hazard_reasoning": "There is a black mid-SUV stopped in front of the ego car in the ego lane, because of a red traffic light ahead. You need to stop to maintain a safe gap and avoid a rear-end collision under the red signal."}
{"id": "train_04540", "split": "train", "clip_key": "2020-0203-114632_056547_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "056547"}, "frames": ["2020-0203-114632_056547_movie_t-3.jpg", "2020-0203-114632_056547_movie_t-2.jpg", "2020-0203-114632_056547_movie_t-1.jpg", "2020-0203-114632_056547_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection with smooth pavement and a left-side guardrail beneath an elevated structure; traffic is moderate, flowing in the right lanes while the left-turn lane is held. Directly ahead in the ego lane, a green and white bus is stopped, waiting to turn left and blocking the ego car's path. In the adjacent through lane to the right, a white box truck moves ahead through the junction, unaffected by the bus. Farther right, several cars continue straight in the same direction at a steady pace. Pedestrians are present on the left sidewalk near the guardrail, walking and waiting well off the carriageway. Overhead signals and directional signs are visible at the intersection.", "hazard_reasoning": "A green and white bus is stopped in front of the ego car in the ego lane, because it is waiting to turn left. You should stop to avoid colliding with the halted bus and ensure compliance with the red light."}
{"id": "train_04541", "split": "train", "clip_key": "titan_clip_260_000504_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_260_000504_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_260_000504_movie_t-3_augB1.jpg", "titan_clip_260_000504_movie_t-2_augB1.jpg", "titan_clip_260_000504_movie_t-1_augB1.jpg", "titan_clip_260_000504_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian on road", "environment_perception": "A narrow urban residential street runs straight with a single undivided lane and smooth pavement, and traffic is very light with no moving vehicles in view. A pedestrian carrying a backpack walks away from the ego vehicle along the left side ahead, moving steadily in the lane and potentially occupying the ego path. Bicycles and small scooters are parked tightly along both curbs, reducing shoulder space but remaining stationary. No signals or salient signs are visible in the scene.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking on the left side of the road away from the ego car. This person could step into the lane unexpectedly, so the driver should yield to ensure the pedestrian's safety."}
{"id": "train_04542", "split": "train", "clip_key": "titan_clip_380_000234_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_380_000234_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_380_000234_movie_t-3_augB1.jpg", "titan_clip_380_000234_movie_t-2_augB1.jpg", "titan_clip_380_000234_movie_t-1_augB1.jpg", "titan_clip_380_000234_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single shared lane and no median is paved with interlocking bricks in good condition; traffic is light with no moving vehicles besides the ego car. Ahead in the center of the lane, a pedestrian in a white shirt and black pants walks away from the car, having shifted into the roadway because a vehicle is parked along the left, and this person constrains the approach. Slightly left of center ahead, another pedestrian in business attire walks forward near the lane edge beside the van and remains in the travel path. On the right, a pedestrian stays on the sidewalk walking toward the camera near the curb. A white van stands on the left, partly intruding into the lane and narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking in the middle of the road, away from the ego car, because of a parked vehicle on the left. This pedestrian walking in the roadway due to the parked vehicle could step into the vehicle's path, so the driver should slow down to avoid a collision."}
{"id": "train_04543", "split": "train", "clip_key": "2020-0226-101332_074469_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "074469"}, "frames": ["2020-0226-101332_074469_movie_t-3.jpg", "2020-0226-101332_074469_movie_t-2.jpg", "2020-0226-101332_074469_movie_t-1.jpg", "2020-0226-101332_074469_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with three lanes in the ego direction runs between office buildings, separated from oncoming traffic by a fence median; the pavement is smooth and traffic is moderate but bunches near a signalized intersection. A black sedan in the ego lane ahead is stopped for a red light, holding the ego vehicle. Two small vans in the adjacent left lane ahead slow and queue near the intersection while staying in their lane. A motorcyclist to the left of the ego car accelerates along the left lane and passes forward near the front of the queue. Overhead traffic signals ahead display red.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid a rear-end collision and to comply with the red signal."}
{"id": "train_04544", "split": "train", "clip_key": "titan_clip_657_000330_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_657_000330_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_657_000330_movie_t-3_augB1.jpg", "titan_clip_657_000330_movie_t-2_augB1.jpg", "titan_clip_657_000330_movie_t-1_augB1.jpg", "titan_clip_657_000330_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban narrow two-way street with smooth pavement and light traffic runs between low-rise buildings. A tall man ahead slightly right, wearing a brown T-shirt and black pants, walks in the middle of the road beside a stopped truck, leaving limited space for the ego vehicle and potentially entering its path. Farther ahead another pedestrian walks along the center of the roadway away from the ego vehicle, remaining in the likely path. A large box truck is parked at the right curb near the camera, encroaching on the lane and prompting the nearer man to walk in the road. A 30 speed limit sign and a no-parking sign are visible on the left, and an orange traffic cone sits on the left sidewalk.", "hazard_reasoning": "There is a tall man, wearing a brown t-shirt and black pants, walking in the middle of the road, toward the ego car, because of the parked vehicle. The pedestrian's position in the travel lane due to the obstructing truck creates a risk of collision, so the driver should manoeuvre carefully around them."}
{"id": "train_04545", "split": "train", "clip_key": "2020-0129-105040_015000_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "015000"}, "frames": ["2020-0129-105040_015000_movie_t-3.jpg", "2020-0129-105040_015000_movie_t-2.jpg", "2020-0129-105040_015000_movie_t-1.jpg", "2020-0129-105040_015000_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial approaches a large signalized intersection with three lanes: a dedicated left-turn lane and two through lanes, divided on the right by a concrete median that carries a parallel roadway. The pavement is dry and smooth, and traffic is moderate, bunching near the junction. Ahead in the ego direction, a line of cars in the through lanes slows and queues at the light, constraining our approach. In the left-turn lane ahead, a car waits near the stop line to turn left, relevant as we approach in the same lane. To the right, vehicles on the separated carriageway proceed straight alongside but remain isolated by the barrier. Overhead blue guide signs for Route 20 show Hachioji straight and a left-turn option.", "hazard_reasoning": "No immediate hazards are present; traffic lights are green and the road ahead is clear, allowing the driver to maintain speed and lane safely."}
{"id": "train_04546", "split": "train", "clip_key": "2020-0207-101955_024071_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "024071"}, "frames": ["2020-0207-101955_024071_movie_t-3.jpg", "2020-0207-101955_024071_movie_t-2.jpg", "2020-0207-101955_024071_movie_t-1.jpg", "2020-0207-101955_024071_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs between tall buildings with no median visible, the pavement is sound, and traffic is heavy and slow-moving. A green canvas-covered truck directly ahead in the ego lane slows because congestion builds ahead, setting the ego car's pace. To the right, a silver sedan in the adjacent lane edges forward alongside, leaving little room for a lane change. Farther right, a large green truck in the next lane also crawls ahead, adding to the queue of same-direction vehicles. An overhead pedestrian bridge spans the road with circular prohibition signs mounted on it.", "hazard_reasoning": "There is a green truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to slower-moving traffic."}
{"id": "train_04547", "split": "train", "clip_key": "2020-0203-154554_021334_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "021334"}, "frames": ["2020-0203-154554_021334_movie_t-3.jpg", "2020-0203-154554_021334_movie_t-2.jpg", "2020-0203-154554_021334_movie_t-1.jpg", "2020-0203-154554_021334_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A busy urban commercial corridor features a divided multi-lane arterial with a raised median and smooth dry pavement; traffic moves at a moderate, steady pace. A dark sedan ahead in the ego lane travels steadily and effectively sets the ego vehicle's pace. In the lane to the left, a white sedan accelerates past and then drifts slightly rightward as if preparing to merge, which could place it ahead of the ego vehicle. Beyond the median to the right, an oncoming bus approaches in the opposite carriageway, separated from the ego path.", "hazard_reasoning": "The road conditions are clear with no visible threats, so maintain speed to continue safe travel."}
{"id": "train_04548", "split": "train", "clip_key": "2020-0225-145150_005766_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "005766"}, "frames": ["2020-0225-145150_005766_movie_t-3.jpg", "2020-0225-145150_005766_movie_t-2.jpg", "2020-0225-145150_005766_movie_t-1.jpg", "2020-0225-145150_005766_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the stopped truck ahead", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings, with a planted median on the right separating oncoming traffic; the pavement is smooth and traffic is light. Ahead in the left lane, a white box truck is stopped with its rear open as it is being unloaded, blocking that lane and constraining the ego's approach. A passenger car travels ahead in the right lane, continuing straight and maintaining the flow past the obstruction. On the left sidewalk, a cyclist moves parallel to traffic beside the stopped truck, remaining off the roadway but close to the curb.", "hazard_reasoning": "There is a white truck stopped in the left lane, because it is being unloaded. This stopped truck blocks part of the lane and obscures pedestrians, so the driver should be cautious."}
{"id": "train_04549", "split": "train", "clip_key": "2020-0205-152530_001342_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "001342"}, "frames": ["2020-0205-152530_001342_movie_t-3.jpg", "2020-0205-152530_001342_movie_t-2.jpg", "2020-0205-152530_001342_movie_t-1.jpg", "2020-0205-152530_001342_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane in each direction meets a cross street at a signalized intersection; the asphalt is worn with patches and manholes, and traffic moves slowly. A white box truck ahead in the ego lane continues straight at low speed, setting the pace. At the left corner, a black sedan edges forward from the side street and may enter the ego lane at the intersection. An oncoming white car approaches in the opposite lane on the right and proceeds straight through. Pedestrians walk along the right sidewalk near the shops but stay off the roadway. A 30 km/h speed limit sign is posted on the left, and an overhead traffic signal controls the junction.", "hazard_reasoning": "No immediate hazards are present in the intersection, so the driver can proceed safely."}
{"id": "train_04550", "split": "train", "clip_key": "titan_clip_437_000300_movie", "source": {"subset": "titan", "scenario": "clip_437", "frame": "000300"}, "frames": ["titan_clip_437_000300_movie_t-3.jpg", "titan_clip_437_000300_movie_t-2.jpg", "titan_clip_437_000300_movie_t-1.jpg", "titan_clip_437_000300_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrians", "environment_perception": "An urban back street with a single narrow, undivided lane paved with interlocking bricks is shown, and traffic is very light. Ahead-right, two pedestrians, one in black pants with a white shirt and the other in a striped dress, walk toward the ego vehicle along the roadside and edge into the travel lane, so they may enter the ego path. At the left edge near the camera, another pedestrian walks away along the sidewalk and stays clear of the lane. A small vehicle covered by a tarp is parked at the right curb just beyond them, slightly narrowing the passage.", "hazard_reasoning": "There are two pedestrians, one wearing black pants and white shirt, the other wearing a striped dress, walking on the right side of the road, toward the ego car. These pedestrians are approaching the vehicle's path and may enter unexpectedly, so the driver should manoeuvre carefully around them to maintain safe clearance."}
{"id": "train_04551", "split": "train", "clip_key": "2020-0131-103016_003267_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "003267"}, "frames": ["2020-0131-103016_003267_movie_t-3.jpg", "2020-0131-103016_003267_movie_t-2.jpg", "2020-0131-103016_003267_movie_t-1.jpg", "2020-0131-103016_003267_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the white sedan merging", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, with smooth dry pavement and metal railings along both sides; traffic is moderate and steady in the same direction. Ahead, a white sedan moves from the right lane into the ego lane and then continues directly in front, briefly reducing the gap to the ego vehicle. Slightly farther ahead to the right, a small white van proceeds straight in its lane at a similar pace and does not merge. Farther ahead in the right lane, a larger box truck travels with the flow and helps set the speed of vehicles in that lane. An overhead gantry sign is visible, and no hazards or obstructions appear.", "hazard_reasoning": "There is a white sedan in the ego lane, changing lanes from the the right lane to the ego lane. This merging maneuver may encroach on your lane and reduce safe clearance, so you should be aware and prepared to adjust your speed or position."}
{"id": "train_04552", "split": "train", "clip_key": "2020-0206-101736_045520_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "045520"}, "frames": ["2020-0206-101736_045520_movie_t-3.jpg", "2020-0206-101736_045520_movie_t-2.jpg", "2020-0206-101736_045520_movie_t-1.jpg", "2020-0206-101736_045520_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes and a bollarded curbside lane runs beneath an enclosed pedestrian overpass; pavement is smooth and traffic is slow to moderate with congestion ahead. A white hatchback directly ahead in the ego lane moves slowly because of the queue, constraining the ego car's pace. To its left, another small white van continues ahead in the adjacent lane at a similar speed without changing lanes. On the right, several vehicles, including a white van, crawl or stand in the bollarded lane. A bus stop lines the left sidewalk.", "hazard_reasoning": "There is a white hatchback driving in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid sudden stops in heavy traffic."}
{"id": "train_04553", "split": "train", "clip_key": "titan_clip_400_000276_movie", "source": {"subset": "titan", "scenario": "clip_400", "frame": "000276"}, "frames": ["titan_clip_400_000276_movie_t-3.jpg", "titan_clip_400_000276_movie_t-2.jpg", "titan_clip_400_000276_movie_t-1.jpg", "titan_clip_400_000276_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "An urban alley-like street with a single narrow lane and block-paved surface runs between shops; there is no divider and traffic is light as the ego vehicle moves forward. Ahead on the left, a white van is parked along the curb, narrowing the lane and partly blocking the view down the street. On the near right, a worker pushes a large blue handcart along the edge and drifts toward the roadway, potentially entering the ego path. Farther ahead near the van, a pedestrian walks from the left toward the center and slows in the lane, constraining the ego vehicle's pace.", "hazard_reasoning": "There is a white van parked on the left side of the road. The parked van narrows the drivable space and may obstruct the view of oncoming traffic, so the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_04554", "split": "train", "clip_key": "2020-0206-101736_030319_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "030319"}, "frames": ["2020-0206-101736_030319_movie_t-3.jpg", "2020-0206-101736_030319_movie_t-2.jpg", "2020-0206-101736_030319_movie_t-1.jpg", "2020-0206-101736_030319_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop.", "environment_perception": "An urban multi-lane two-way road with a painted median and smooth dry pavement is shown, and traffic moves slowly with a short queue ahead. A white mid-SUV is stopped directly in front of the ego car in the ego lane, holding the ego vehicle as congestion ahead stalls movement. A white truck in the oncoming lanes to the right approaches straight through without affecting the ego path. Other distant vehicles continue along the corridor, but no pedestrians, cyclists, or obstacles are apparent.", "hazard_reasoning": "A white mid-SUV is stopped in front of the ego car in the ego lane because of traffic congestion. Since the vehicle ahead is halted, the driver must stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_04555", "split": "train", "clip_key": "2020-0131-135401_042628_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "042628"}, "frames": ["2020-0131-135401_042628_movie_t-3.jpg", "2020-0131-135401_042628_movie_t-2.jpg", "2020-0131-135401_042628_movie_t-1.jpg", "2020-0131-135401_042628_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban signalized intersection on a two-way road with one lane each direction and no median has smooth pavement and moderate traffic moving steadily. A white hatchback ahead in the ego lane accelerates away through the junction on a green light, leading the ego vehicle. To the right, a silver van slightly ahead proceeds straight in a parallel path across the intersection, remaining outside the ego lane. On the left, a small red van from the side street moves slowly to turn left into the same direction and may merge ahead. Pedestrians and a cyclist wait at the near-left corner, while several people stand at the near-right corner by the storefront, none entering the crosswalk.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04556", "split": "train", "clip_key": "2020-0203-114632_003842_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "003842"}, "frames": ["2020-0203-114632_003842_movie_t-3.jpg", "2020-0203-114632_003842_movie_t-2.jpg", "2020-0203-114632_003842_movie_t-1.jpg", "2020-0203-114632_003842_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-lane two-way street curves gently left, divided by double yellow lines on dry, well-kept pavement, with light to moderate oncoming flow. An orange traffic cone sits ahead near the centerline in front of the ego car, slightly to the right of its path. A white compact car approaches in the oncoming lane at close range, tracking the curve and constraining lateral room near the centerline. A boxy silver van follows it in the same oncoming lane at a moderate gap, continuing straight past. On the left sidewalk two pedestrians stand by a small booth and railing, remaining off the carriageway with no crossing motion. A no-parking sign on a pole at the left edge is visible.", "hazard_reasoning": "There is an orange traffic cone, in front of the ego car. The cone marks an obstacle on the road, so the driver should carefully manoeuvre to avoid collision and maintain safe travel."}
{"id": "train_04557", "split": "train", "clip_key": "2020-0226-101332_048892_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "048892"}, "frames": ["2020-0226-101332_048892_movie_t-3.jpg", "2020-0226-101332_048892_movie_t-2.jpg", "2020-0226-101332_048892_movie_t-1.jpg", "2020-0226-101332_048892_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road approaches a signalized intersection with broad zebra crosswalks; pavement looks smooth and traffic is moderate, with oncoming flow in the right-side lanes. A gray van drives ahead in the ego lane, moving away and setting the immediate pace. A dark car slightly ahead to the left continues straight in its lane at similar speed, keeping parallel to the ego vehicle and limiting room to change left. To the right just beyond the crosswalk, a silver van moves left across dashed lines toward the through lanes and may enter the ego lane. Several pedestrians wait on the left sidewalk near the corner, and the scene remains orderly as vehicles proceed straight through the junction.", "hazard_reasoning": "There is a gray van driving in the ego lane away from the ego car. The van's position directly ahead may change speed or lane unexpectedly, so the driver should be prepared."}
{"id": "train_04558", "split": "train", "clip_key": "titan_clip_833_000186_movie", "source": {"subset": "titan", "scenario": "clip_833", "frame": "000186"}, "frames": ["titan_clip_833_000186_movie_t-3.jpg", "titan_clip_833_000186_movie_t-2.jpg", "titan_clip_833_000186_movie_t-1.jpg", "titan_clip_833_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down near construction zone", "environment_perception": "An urban shopping street with a narrow single shared lane and no divider runs between buildings on clean brick pavement, with light traffic while a construction zone narrows the right side. Several pedestrians ahead and along the left walk within the roadway and on the margins, some approaching and others receding, occupying the ego path and moderating progress. On the right, a man wearing a white shirt, black pants, and a helmet holds a traffic wand and stands beside cones because of the construction work, marking the edge of the lane. A small vehicle farther ahead in the same direction proceeds away down the street. Parked bicycles left and a large work truck right act as roadside obstacles.", "hazard_reasoning": "There is a man wearing a white shirt, black pants, and a helmet, holding a traffic wand, and standing on the right side of the road, because of construction work on the right. The man is directing traffic near the construction zone, posing a potential obstacle and requiring reduced speed to ensure safety."}
{"id": "train_04559", "split": "train", "clip_key": "titan_clip_553_000396_movie", "source": {"subset": "titan", "scenario": "clip_553", "frame": "000396"}, "frames": ["titan_clip_553_000396_movie_t-3.jpg", "titan_clip_553_000396_movie_t-2.jpg", "titan_clip_553_000396_movie_t-1.jpg", "titan_clip_553_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian behind truck", "environment_perception": "An urban two-way street with one lane per direction and no median appears; the pavement is smooth and traffic flow is light. On the left ahead, a small cargo truck is stopped at the curb and a pedestrian wearing a gray shirt is loading at its rear, standing near the edge of the ego lane and close to the travel path. An oncoming black car advances in the right lane and passes the camera vehicle, compressing clearance beside the stopped truck. Additional parked vehicles, including another truck farther ahead on the left, narrow the corridor along the curb.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and loading a truck on the left side of the road. The pedestrian could unexpectedly step onto the road from behind the truck, so the driver should anticipate sudden movements and maintain a safe distance."}
{"id": "train_04560", "split": "train", "clip_key": "2020-0131-103016_024703_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "024703"}, "frames": ["2020-0131-103016_024703_movie_t-3.jpg", "2020-0131-103016_024703_movie_t-2.jpg", "2020-0131-103016_024703_movie_t-1.jpg", "2020-0131-103016_024703_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "A suburban divided road with smooth, dry pavement carries light traffic, with a landscaped median on the right and multiple lanes in the same direction. A silver box truck directly ahead in the ego lane is stopped at a red light, holding the ego vehicle. No other moving vehicles are close by in the same direction, and the opposite carriageway is clear near the intersection. No pedestrians, cyclists, or obstacles are visible.", "hazard_reasoning": "There is a silver truck stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver must stop to avoid a collision and comply with the red signal."}
{"id": "train_04561", "split": "train", "clip_key": "2020-0204-103442_090847_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "090847"}, "frames": ["2020-0204-103442_090847_movie_t-3.jpg", "2020-0204-103442_090847_movie_t-2.jpg", "2020-0204-103442_090847_movie_t-1.jpg", "2020-0204-103442_090847_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated two-way road with one lane per direction and a solid yellow center line runs ahead; the pavement looks dry and smooth and traffic appears light to moderate. A black sedan directly ahead in the ego lane slows because of congestion farther ahead, constraining the ego car's pace. A gold minivan approaches in the oncoming lane to the right and passes steadily without drifting. Another oncoming car follows farther back in the same right-side lane. A roadside sign on the left announces roadwork 100 m ahead.", "hazard_reasoning": "There is a black sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. Slow down to maintain a safe following distance and adapt to reduced speeds due to congested traffic."}
{"id": "train_04562", "split": "train", "clip_key": "titan_clip_824_000282_movie", "source": {"subset": "titan", "scenario": "clip_824", "frame": "000282"}, "frames": ["titan_clip_824_000282_movie_t-3.jpg", "titan_clip_824_000282_movie_t-2.jpg", "titan_clip_824_000282_movie_t-1.jpg", "titan_clip_824_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with green edge lanes and no center divider lies ahead; the pavement is smooth and vehicle traffic is light, with several cars parked along the right curb. A white hatchback on the right protrudes toward the lane and narrows the roadway. Two pedestrians ahead move from the right into the ego lane and walk away near the center, constraining the vehicle; one is a lady in a black dress carrying an umbrella who steps around the parked car and continues in the middle of the road. Another person stands near the left storefront at the curb and does not enter the lane. No signals or speed signs are prominent.", "hazard_reasoning": "There is a lady, wearing a black dress, carrying an umbrella, walking in the middle of the road, from the right side, because of the parked vehicle. The driver should carefully manoeuvre around the pedestrian to avoid collision due to the lane obstruction."}
{"id": "train_04563", "split": "train", "clip_key": "titan_clip_1016_000096_movie", "source": {"subset": "titan", "scenario": "clip_1016", "frame": "000096"}, "frames": ["titan_clip_1016_000096_movie_t-3.jpg", "titan_clip_1016_000096_movie_t-2.jpg", "titan_clip_1016_000096_movie_t-1.jpg", "titan_clip_1016_000096_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-lane two-way street lined with mid-rise buildings and trees curves gently right; the pavement looks smooth and dry, and traffic remains light. An oncoming white car approaches ahead slightly right of center in its lane around the bend, separate from the ego lane. On the left sidewalk ahead, a man wearing a cap and beige uniform pulls a wheeled cart away from the ego car, keeping to the curb and off the roadway. On the right sidewalk near the foreground, another pedestrian walks along but stays on the walkway. No salient signals or obstacles appear in the travel lane.", "hazard_reasoning": "There is a man wearing a cap and a beige uniform and pulling a wheeled cart on the left side of the road. The pedestrian and cart could move unpredictably, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_04564", "split": "train", "clip_key": "titan_clip_381_000216_movie", "source": {"subset": "titan", "scenario": "clip_381", "frame": "000216"}, "frames": ["titan_clip_381_000216_movie_t-3.jpg", "titan_clip_381_000216_movie_t-2.jpg", "titan_clip_381_000216_movie_t-1.jpg", "titan_clip_381_000216_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban commercial street with interlocking brick pavement carries slow mixed traffic in a narrow bidirectional lane without a divider, and the surface appears smooth. On the left at close range, a white van cuts out from the curb into the ego vehicle's lane and moves toward the ego car, squeezing the available space. Farther ahead in the center, a cyclist rides away along the lane at low speed and could constrain the ego vehicle's pace. Near the left curb, several pedestrians mill around a dark van and step into the roadway, so they may enter the path. Parked vehicles on the left and shopfronts with cones on the right create a tight corridor.", "hazard_reasoning": "There is a white van on the left side of the road, cutting into the ego car lane, moving toward the ego car. Since the white van is encroaching into the ego lane, the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_04565", "split": "train", "clip_key": "2020-0217-110854_068851_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "068851"}, "frames": ["2020-0217-110854_068851_movie_t-3.jpg", "2020-0217-110854_068851_movie_t-2.jpg", "2020-0217-110854_068851_movie_t-1.jpg", "2020-0217-110854_068851_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop before the red light.", "environment_perception": "An urban two-way street runs between mid-rise buildings, with opposing lanes divided by a painted centerline and a diagonal striped buffer; the pavement looks dry and smooth, and traffic is moderate. A white pickup truck directly ahead in the ego lane is stopped for a red signal, holding the ego car. A dark sedan approaches in the opposing lane to the right and continues straight past the queue. A white car travels farther right in the opposite direction near the curb at a steady pace. Overhead traffic lights ahead display red above the ego path, and metal railings line the left sidewalk.", "hazard_reasoning": "There is a white pickup truck stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to comply with the signal and maintain safe distance under this situation."}
{"id": "train_04566", "split": "train", "clip_key": "2020-0220-102630_027101_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "027101"}, "frames": ["2020-0220-102630_027101_movie_t-3.jpg", "2020-0220-102630_027101_movie_t-2.jpg", "2020-0220-102630_027101_movie_t-1.jpg", "2020-0220-102630_027101_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes and no median runs between midrise buildings, the pavement smooth but traffic heavy and mostly stopped. A large white box truck is directly ahead in the ego lane, stopped because of congestion ahead and blocking the ego vehicle's path. In the adjacent right lane, a tarp-covered medium truck slightly ahead creeps forward past the stopped truck, limiting chances to merge. A sidewalk with railings lines the left edge of the road.", "hazard_reasoning": "There is a white truck stopped in the ego lane because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the stationary truck and maintain a safe following distance."}
{"id": "train_04567", "split": "train", "clip_key": "2020-0131-135401_000621_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-135401_000621_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-135401_000621_movie_t-3_augB1.jpg", "2020-0131-135401_000621_movie_t-2_augB1.jpg", "2020-0131-135401_000621_movie_t-1_augB1.jpg", "2020-0131-135401_000621_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban two-way street with opposing lanes and a solid centerline runs between mid-rise buildings; the pavement is smooth and traffic is light to moderate, with parked cars lining both curbs. A white box truck ahead in the ego lane slows, constraining the ego car's pace. An oncoming white car in the right-hand lane approaches and passes, remaining in its lane and discouraging any overtaking. Several pedestrians on the left sidewalk walk along the curb while others stand near entrances on the right, all remaining off the roadway. No salient signals or posted speeds are visible.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_04568", "split": "train", "clip_key": "2020-0206-101736_028793_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "028793"}, "frames": ["2020-0206-101736_028793_movie_t-3.jpg", "2020-0206-101736_028793_movie_t-2.jpg", "2020-0206-101736_028793_movie_t-1.jpg", "2020-0206-101736_028793_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction runs between mid-rise buildings, divided by a wide painted chevron buffer; the pavement is smooth and traffic is moderate. Directly ahead in the ego lane, a white hatchback slows because of congestion ahead, constraining the ego car's pace. Farther up the same lane, a short queue of vehicles creeps forward, sustaining the delay. In the oncoming lane to the right, a turquoise cement mixer and another truck approach slowly along their lane, separated from the ego path by the buffer and not encroaching. No salient traffic signals or signs are visible, and the roadway appears clear of obstacles.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adapt to the reduced speed caused by congestion."}
{"id": "train_04569", "split": "train", "clip_key": "2020-0207-101955_110316_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "110316"}, "frames": ["2020-0207-101955_110316_movie_t-3.jpg", "2020-0207-101955_110316_movie_t-2.jpg", "2020-0207-101955_110316_movie_t-1.jpg", "2020-0207-101955_110316_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes and smooth pavement; traffic is heavy and compresses ahead. A blue sedan directly ahead in the ego lane slows due to congestion ahead, setting the ego-car's pace. To the right, a container semi-trailer runs alongside in the next lane at a similar speed, limiting any move to the right. To the left, a dump truck in the outer lane proceeds nearly parallel slightly ahead, also constraining lateral options. Farther ahead under the structure, additional trucks are queued in the distance. Overhead blue direction signs are visible, but no signals or unusual markings appear.", "hazard_reasoning": "There is a blue sedan slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision as traffic is backed up."}
{"id": "train_04570", "split": "train", "clip_key": "2020-0207-151349_053523_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "053523"}, "frames": ["2020-0207-151349_053523_movie_t-3.jpg", "2020-0207-151349_053523_movie_t-2.jpg", "2020-0207-151349_053523_movie_t-1.jpg", "2020-0207-151349_053523_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban setting with mid-rise buildings frames a signalized intersection on a two-lane road with no median and smooth pavement; traffic is light overall but cross traffic moves through. Ahead in the junction, a white van crosses from left to right straight across the ego path, occupying the space in front. To its left, a green flatbed truck also traverses left to right ahead of the ego, clearing before the van and constraining the available gap. A dark van follows behind the white van, continuing across the intersection. Traffic lights are visible on the corner.", "hazard_reasoning": "There is a gray sedan turning left in front of the ego-car, in the ego-car lane. This turning maneuver may slow the sedan and obstruct your path, so follow the vehicle ahead to maintain safe distance."}
{"id": "train_04571", "split": "train", "clip_key": "titan_clip_376_000018_movie", "source": {"subset": "titan", "scenario": "clip_376", "frame": "000018"}, "frames": ["titan_clip_376_000018_movie_t-3.jpg", "titan_clip_376_000018_movie_t-2.jpg", "titan_clip_376_000018_movie_t-1.jpg", "titan_clip_376_000018_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrian on left side", "environment_perception": "A dense urban shopping street features a narrow single-lane roadway paved with interlocking bricks, no centerline, and light traffic on a smooth surface. Ahead in the ego lane, a dark car travels away and slows near pedestrians, constraining the ego vehicle's pace. On the left side of the road, a man in a white shirt and brown pants carrying a backpack walks toward the ego vehicle along the edge of the roadway and may enter the lane. Farther ahead by storefronts on the right, several pedestrians approach the curb and one begins to cross toward the left after the car, potentially entering the ego path. A parked bicycle and a raised curb on the right narrow the margin but remain outside the lane.", "hazard_reasoning": "There is a man wearing a white shirt and brown pants, carrying a backpack, and walking towards the ego car, on the left side of the road. The pedestrian is approaching the vehicle's path on the left, so the driver should be cautious to avoid a collision."}
{"id": "train_04572", "split": "train", "clip_key": "2020-0226-140503_088553_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "088553"}, "frames": ["2020-0226-140503_088553_movie_t-3.jpg", "2020-0226-140503_088553_movie_t-2.jpg", "2020-0226-140503_088553_movie_t-1.jpg", "2020-0226-140503_088553_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane each way, no median, and smooth pavement shows slow-moving flow due to a queue ahead. A white hatchback is directly in front in the ego lane and slows because of traffic congestion ahead, so it controls the ego vehicle's pace. To the right, oncoming traffic includes a large dump truck that creeps past close to the centerline while staying in its lane. Farther ahead in the same lane a small white van and other cars sit in a short line, keeping speeds low. White railings, trees, and parked bicycles line the left sidewalk, with no salient signals visible.", "hazard_reasoning": "There is a white hatchback slowing down in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to avoid rear-ending the slowing vehicle."}
{"id": "train_04573", "split": "train", "clip_key": "2020-0213-143552_021047_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "021047"}, "frames": ["2020-0213-143552_021047_movie_t-3.jpg", "2020-0213-143552_021047_movie_t-2.jpg", "2020-0213-143552_021047_movie_t-1.jpg", "2020-0213-143552_021047_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the truck", "environment_perception": "An urban multi-lane two-way road with a narrow bollard median on the right and smooth pavement is queued at an intersection, so traffic is stationary. A black canvas-covered truck directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the adjacent left lane, a white box truck slightly ahead remains stopped for the same light, restricting the ego's view and blocking a lane change. On the right sidewalk near the crosswalk, several pedestrians wait at the corner and may enter when the signal changes. The traffic signal ahead shows red.", "hazard_reasoning": "There is a black truck stopped in front of the ego car, because of a red traffic light. The driver should stop behind the truck to avoid collision and obey the red signal."}
{"id": "train_04574", "split": "train", "clip_key": "titan_clip_418_000042_movie", "source": {"subset": "titan", "scenario": "clip_418", "frame": "000042"}, "frames": ["titan_clip_418_000042_movie_t-3.jpg", "titan_clip_418_000042_movie_t-2.jpg", "titan_clip_418_000042_movie_t-1.jpg", "titan_clip_418_000042_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "be aware of parked truck", "environment_perception": "An urban side street with a narrow block-paved roadway has no center line or median, and traffic is light with no moving vehicles ahead as the ego vehicle proceeds straight. A white truck is parked in a marked bay on the left side of the road, slightly narrowing the approach as the car comes alongside. Another small truck is also stationary just ahead on the same left curb, remaining within the parking area. A pedestrian walks away along the right sidewalk in the mid-distance, well clear of the lane. A blue P parking sign is posted above the parked vehicles.", "hazard_reasoning": "There is a white truck parked in a parking spot, on the left side of the road. The parked truck reduces available lane width and may obstruct views of pedestrians or oncoming traffic, so the driver should proceed with caution."}
{"id": "train_04575", "split": "train", "clip_key": "2020-0127-132751_050451_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "050451"}, "frames": ["2020-0127-132751_050451_movie_t-3.jpg", "2020-0127-132751_050451_movie_t-2.jpg", "2020-0127-132751_050451_movie_t-1.jpg", "2020-0127-132751_050451_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane arterial with a right-side guardrail and smooth pavement carries moderate traffic that compresses into a slow queue ahead. Directly ahead in the ego lane, a white hatchback is stopped due to congestion and holds the ego vehicle's pace. On the left, a city bus alongside creeps forward in the adjacent same-direction lane, reducing space for any lane change. Farther ahead, a line of same-direction cars inches toward an intersection under a distant signal, sustaining the backup.", "hazard_reasoning": "There is a white hatchback, that has stopped, in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop promptly to maintain a safe distance and avoid a collision."}
{"id": "train_04576", "split": "train", "clip_key": "2020-0226-140503_086409_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "086409"}, "frames": ["2020-0226-140503_086409_movie_t-3.jpg", "2020-0226-140503_086409_movie_t-2.jpg", "2020-0226-140503_086409_movie_t-1.jpg", "2020-0226-140503_086409_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A wide urban arterial with multiple lanes in each direction and no median approaches a large signalized intersection; the pavement is smooth and traffic is moderate with adjacent lanes flowing. A white hatchback directly ahead in the ego lane is stopped at the line, waiting to make a right turn and holding the ego vehicle. To the right, a black sedan continues straight through the junction and passes, while other same-direction vehicles proceed in the right lanes. Oncoming traffic streams through the intersection, keeping the right-turning car stopped. The traffic signal facing the ego lane shows green.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because it is waiting to make a right turn. The driver should stop to avoid rear-ending the stationary vehicle that is preparing to make a right turn."}
{"id": "train_04577", "split": "train", "clip_key": "titan_clip_747_000258_movie", "source": {"subset": "titan", "scenario": "clip_747", "frame": "000258"}, "frames": ["titan_clip_747_000258_movie_t-3.jpg", "titan_clip_747_000258_movie_t-2.jpg", "titan_clip_747_000258_movie_t-1.jpg", "titan_clip_747_000258_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street with a single narrow shared lane and no divider is shown, the pavement in fair condition and vehicle traffic light, with speeds low through the pedestrian zone. Several pedestrians ahead occupy the lane, some crossing from the right storefronts and others walking away along the center, constraining the ego vehicle's pace. A cyclist wearing a black shirt and blue pants rides ahead in the middle of the ego lane, moving away from the camera and further occupying the path. Bicycles are parked along the left curb, narrowing the usable roadway. Large road markings reading ??? with forward arrows are painted on the surface, indicating a slow zone.", "hazard_reasoning": "A cyclist wearing a black shirt and blue pants, is cycling in the middle of the ego lane, away from the ego car. The driver should slow down to maintain safe distance and avoid a collision with the cyclist ahead."}
{"id": "train_04578", "split": "train", "clip_key": "titan_clip_1016_000354_movie", "source": {"subset": "titan", "scenario": "clip_1016", "frame": "000354"}, "frames": ["titan_clip_1016_000354_movie_t-3.jpg", "titan_clip_1016_000354_movie_t-2.jpg", "titan_clip_1016_000354_movie_t-1.jpg", "titan_clip_1016_000354_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one lane each direction curves gently right, divided by a solid yellow centerline; the pavement is smooth and traffic is light. A pedestrian pushing a trolley on the left edge walks toward the camera near the curb, potentially edging toward the ego lane. A dark car stands parked along the right curb in the oncoming side, remaining stationary as the scene unfolds. A round 30 sign on the right indicates the posted speed.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, pushing a trolley on the left side of the road, towards the ego car. The pedestrian may step into the vehicle's path, so the driver should manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_04579", "split": "train", "clip_key": "2020-0131-135401_002272_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "002272"}, "frames": ["2020-0131-135401_002272_movie_t-3.jpg", "2020-0131-135401_002272_movie_t-2.jpg", "2020-0131-135401_002272_movie_t-1.jpg", "2020-0131-135401_002272_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the truck.", "environment_perception": "A narrow urban two-way street with a solid yellow center line runs between shops and apartments; the pavement is dry and traffic is halted. A white box truck directly ahead in the ego lane is stopped due to traffic congestion ahead, fully blocking the ego-vehicle's path and dictating a standstill. No vehicles pass in the oncoming lane during this moment, leaving no space to maneuver around. Pedestrians and bicycles remain on the sidewalks and do not enter the roadway.", "hazard_reasoning": "There is a white truck stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead. In this situation, the driver should stop to maintain a safe following distance and avoid colliding with the halted vehicle due to congestion."}
{"id": "train_04580", "split": "train", "clip_key": "titan_clip_236_000318_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_236_000318_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_236_000318_movie_t-3_augB1.jpg", "titan_clip_236_000318_movie_t-2_augB1.jpg", "titan_clip_236_000318_movie_t-1_augB1.jpg", "titan_clip_236_000318_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A dense urban street with tall buildings narrows to a single two-way lane with no median; the pavement is smooth and traffic is light. A large 30 speed marking is painted on the roadway. Far ahead on the left side, a man in black pants and a blue shirt cycles toward the ego vehicle along the left edge of the lane, creating oncoming conflict with the ego path. On the near right, a silver minivan is stopped at the curb protruding slightly into the lane, narrowing the available passage. At the near left, a pedestrian holding an umbrella walks along the curb close to the roadway. Rows of parked bicycles line the right side.", "hazard_reasoning": "There is a man wearing black pants and a blue shirt and cycling on the left side of the road, towards ego car. The cyclist is approaching from the left and may cross into the vehicle's path, requiring careful maneuvering to avoid a collision."}
{"id": "train_04581", "split": "train", "clip_key": "2020-0205-152530_009666_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "009666"}, "frames": ["2020-0205-152530_009666_movie_t-3.jpg", "2020-0205-152530_009666_movie_t-2.jpg", "2020-0205-152530_009666_movie_t-1.jpg", "2020-0205-152530_009666_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with painted dividers and dry pavement runs alongside a metal railing, and same-direction traffic is heavy and mostly stop-and-go. A green sedan directly ahead in the ego lane is stopped, holding the ego car because of congestion ahead. Slightly farther ahead to the right, a black minivan in the adjacent same-direction lane slows and queues beside the ego vehicle, limiting a rightward merge. Ahead to the left, a dark van in the neighboring lane creeps forward in the line, keeping pace with the ego car. Oncoming traffic to the right flows past separately, while strong sun glare ahead reduces visibility.", "hazard_reasoning": "There is a green sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. You should stop to maintain a safe distance and prevent a rear-end collision under these conditions."}
{"id": "train_04582", "split": "train", "clip_key": "2020-0220-102630_006691_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "006691"}, "frames": ["2020-0220-102630_006691_movie_t-3.jpg", "2020-0220-102630_006691_movie_t-2.jpg", "2020-0220-102630_006691_movie_t-1.jpg", "2020-0220-102630_006691_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection appears on a smooth two-lane road with no median, and traffic is queued and slow. Ahead in the ego lane a gray sedan is stopped for a red light, holding the ego vehicle at the line. Groups of pedestrians cross the wide crosswalk from both sides in front of the queue, continuing across the ego lane and constraining movement. A cyclist mixes with the pedestrians from the right side near curbside trucks and passes directly across the ego vehicle's path. The overhead signal facing the ego shows red.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego car because of a red traffic light. The driver should stop to avoid colliding with the halted vehicle and obey the traffic signal."}
{"id": "train_04583", "split": "train", "clip_key": "titan_clip_688_000270_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_688_000270_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_688_000270_movie_t-3_augB1.jpg", "titan_clip_688_000270_movie_t-2_augB1.jpg", "titan_clip_688_000270_movie_t-1_augB1.jpg", "titan_clip_688_000270_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for crossing pedestrian", "environment_perception": "An urban commercial street with closely spaced shops forms a narrow two-way road without a centerline; the pavement looks clean and traffic is light with no moving vehicles. Ahead in the ego lane, a pedestrian wearing a white shirt and black pants crosses from left to right in front of the car. On the near left edge, another pedestrian walks away along the roadway close to the travel lane. Farther ahead near the right side, a person walks along the curb in the same direction while remaining clear of the lane. Cones, stacked boxes near storefronts, and parked bicycles line the edges, slightly narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, crossing in front of the ego car from the left to right side of the lane. The driver should slow down to yield to the crossing pedestrian and avoid a potential collision."}
{"id": "train_04584", "split": "train", "clip_key": "titan_clip_914_000510_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_914_000510_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_914_000510_movie_t-3_augB1.jpg", "titan_clip_914_000510_movie_t-2_augB1.jpg", "titan_clip_914_000510_movie_t-1_augB1.jpg", "titan_clip_914_000510_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "An urban narrow one-lane street runs between buildings with no divider and smooth pavement, and traffic is light with no moving vehicles as the road bends slightly right ahead. Two pedestrians are ahead in the roadway: a taller person near the left edge walks away, and a shorter person near the right edge also walks away, both occupying the ego lane. A red delivery scooter is stopped by the left curb ahead, its position jutting slightly into the lane. A large diamond marking is painted on the pavement.", "hazard_reasoning": "There is a tall and short pedestrian walking in the middle of the road, away from the ego car. They occupy the vehicle's path on a narrow, curved street, making them harder to see, so the driver should remain aware of their presence to prevent a collision."}
{"id": "train_04585", "split": "train", "clip_key": "2020-0203-154554_029182_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_029182_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_029182_movie_t-3_augB1.jpg", "2020-0203-154554_029182_movie_t-2_augB1.jpg", "2020-0203-154554_029182_movie_t-1_augB1.jpg", "2020-0203-154554_029182_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban arterial with several same-direction lanes runs beneath high-rises and an elevated roadway; the pavement is dry and smooth, and traffic is heavy and slow. Directly ahead in the ego lane, a white flatbed truck with rear ramps slows in queue due to congestion, setting the ego vehicle's pace. In the adjacent right lane, a white van inches forward alongside, keeping close and limiting any opportunity to move right. In the left neighboring lane, another small white van slightly ahead rolls with the slow flow and could block a shift to the left.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to match the truck's reduced speed and maintain a safe following distance to avoid a collision."}
{"id": "train_04586", "split": "train", "clip_key": "2020-0210-101957_086070_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "086070"}, "frames": ["2020-0210-101957_086070_movie_t-3.jpg", "2020-0210-101957_086070_movie_t-2.jpg", "2020-0210-101957_086070_movie_t-1.jpg", "2020-0210-101957_086070_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction curves gently right, divided by flexible posts and lined with cones; the dry pavement looks intact and traffic is light to moderate near a signalized intersection. Ahead in the ego lane, a brown construction vehicle on a flatbed slows and sets the pace. On the left edge, a cyclist rides forward along the roadside path parallel to the ego lane and stays close to the curb. In the oncoming lane to the right, a few cars approach through the bend while maintaining their lane. A pedestrian stands on a small refuge by the center posts near the crosswalk, appearing to wait as vehicles pass. Traffic signals and directional signs are visible at the intersection.", "hazard_reasoning": "There is a brown construction vehicle slowing in the ego lane. Slow down to maintain a safe distance and avoid a collision."}
{"id": "train_04587", "split": "train", "clip_key": "2020-0218-103119_003119_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "003119"}, "frames": ["2020-0218-103119_003119_movie_t-3.jpg", "2020-0218-103119_003119_movie_t-2.jpg", "2020-0218-103119_003119_movie_t-1.jpg", "2020-0218-103119_003119_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to black hatchback", "environment_perception": "An urban multi-lane arterial with smooth pavement runs between tall buildings, with a painted chevron zone and low hedges separating opposing directions; traffic is light and moves freely. To the left ahead, a dark taxi in the adjacent same-direction lane continues straight at a similar speed, traveling parallel to the ego vehicle. In the ego lane, a white sedan ahead cruises steadily and effectively sets the following gap. Farther ahead in the same lane, a small truck proceeds toward the next intersection and may constrain pace. At the far right side of the road, a black hatchback approaches toward the ego vehicle near the guardrail.", "hazard_reasoning": "There is a black hatched driving towards the ego car, on the right side of the road. The vehicle is approaching from the right and may merge into your lane unexpectedly, so you should yield to avoid a collision."}
{"id": "train_04588", "split": "train", "clip_key": "titan_clip_948_000036_movie", "source": {"subset": "titan", "scenario": "clip_948", "frame": "000036"}, "frames": ["titan_clip_948_000036_movie_t-3.jpg", "titan_clip_948_000036_movie_t-2.jpg", "titan_clip_948_000036_movie_t-1.jpg", "titan_clip_948_000036_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road narrows as it approaches a railway level crossing, bounded by fences and guardrails, with smooth pavement and light traffic. A cyclist wearing a white shirt rides ahead in the middle of the lane, moving away toward the tracks and effectively setting the ego vehicle's pace. Another cyclist slightly to the left and just ahead also pedals toward the crossing and remains in the ego path, so the two riders occupy the approach. The level-crossing equipment is prominent, with black-and-yellow striped barriers and signal masts, and an overhead sign indicates 4.5 m clearance. No trains or motor vehicles are visible.", "hazard_reasoning": "There is a cyclist wearing a white shirt, cycling in the middle of the road, away from the ego car. The driver should slow down to maintain a safe distance and avoid collision with the cyclist occupying the lane."}
{"id": "train_04589", "split": "train", "clip_key": "2020-0129-144857_031793_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "031793"}, "frames": ["2020-0129-144857_031793_movie_t-3.jpg", "2020-0129-144857_031793_movie_t-2.jpg", "2020-0129-144857_031793_movie_t-1.jpg", "2020-0129-144857_031793_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with a right-side guardrail and dry, well?arked pavement; traffic is moderate and bunches up ahead in the same direction. A black van directly ahead in the ego lane slows in a short queue, constraining the ego car's pace because of traffic congestion. A white box truck farther ahead slightly left of the ego path also crawls in the queue and contributes to the slowdown. Cars in the adjacent left lane move past gradually but remain in their lane without merging into the ego lane. A few pedestrians walk along the left sidewalk behind the curb, well separated from traffic.", "hazard_reasoning": "There is a black van slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to match the traffic flow and maintain a safe following distance under this situation."}
{"id": "train_04590", "split": "train", "clip_key": "2020-0213-143552_056974_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "056974"}, "frames": ["2020-0213-143552_056974_movie_t-3.jpg", "2020-0213-143552_056974_movie_t-2.jpg", "2020-0213-143552_056974_movie_t-1.jpg", "2020-0213-143552_056974_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban two-way street has one lane per direction divided by a low shrub median, smooth pavement, and traffic in the ego direction that compresses ahead. A white box truck directly ahead in the ego lane is slowing because a short queue forms in front of it, constraining the ego car's pace. To the right of the median, an oncoming white car passes steadily without interaction. Farther ahead, more vehicles bunch near an overhead structure, keeping the flow slow. No unusual hazards are visible.", "hazard_reasoning": "There is a white truck in the ego-car lane that is slowing down, because there is traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the slowing traffic."}
{"id": "train_04591", "split": "train", "clip_key": "2020-0127-132751_103467_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "103467"}, "frames": ["2020-0127-132751_103467_movie_t-3.jpg", "2020-0127-132751_103467_movie_t-2.jpg", "2020-0127-132751_103467_movie_t-1.jpg", "2020-0127-132751_103467_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane in each direction runs ahead, divided by a solid yellow centerline; the pavement is slightly worn and overall flow is moderate with a brief slowdown ahead. A gray van directly ahead in the ego lane slows and queues because of congestion farther up the road, limiting the ego car's speed. An oncoming scooter travels toward the camera in its lane to the right of the centerline and passes steadily without encroaching. Two pedestrians on the right sidewalk move along near storefronts and stay clear of the roadway. A gas station entrance on the left borders the road, and no vehicles emerge from it during the scene.", "hazard_reasoning": "A gray van slowing in front of the ego car in the ego lane because of traffic congestion ahead. Slow down to maintain safe distance and avoid a collision with the slower-moving van in congested traffic."}
{"id": "train_04592", "split": "train", "clip_key": "2020-0210-101957_071445_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "071445"}, "frames": ["2020-0210-101957_071445_movie_t-3.jpg", "2020-0210-101957_071445_movie_t-2.jpg", "2020-0210-101957_071445_movie_t-1.jpg", "2020-0210-101957_071445_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban residential street with no marked centerline runs ahead, bounded by edge lines and a low guardrail on the right; the pavement looks smooth and traffic is light as the road gently bends right. A white van ahead in the ego lane drives straight at a modest pace, maintaining its lane and effectively setting the ego vehicle's speed. Parked vehicles line the sides, including a silver van in a lot on the left and a white car behind the right guardrail, reducing lateral clearance but remaining stationary. No traffic signals or pedestrians are visible.", "hazard_reasoning": "There is a white van driving in the ego lane. The white van ahead could suddenly slow or stop, so the driver should maintain awareness and keep a safe distance."}
{"id": "train_04593", "split": "train", "clip_key": "titan_clip_1105_000438_movie", "source": {"subset": "titan", "scenario": "clip_1105", "frame": "000438"}, "frames": ["titan_clip_1105_000438_movie_t-3.jpg", "titan_clip_1105_000438_movie_t-2.jpg", "titan_clip_1105_000438_movie_t-1.jpg", "titan_clip_1105_000438_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with no center line runs between storefronts, the pavement is smooth, and traffic is light with no vehicles, mainly pedestrians. A pedestrian on the right curb near the camera walks diagonally across the roadway into the ego lane and passes close to the front. Farther ahead, a person in the middle of the road walks toward the ego vehicle, constraining its pace. On the left side, a child wearing a backpack and shorts walks toward the ego-car along the edge of the street near the travel path. Storefronts, bollards, and displays line the left, slightly narrowing the usable lane.", "hazard_reasoning": "There is a child wearing a backpack and shorts, walking on the left side of the street, toward the ego-car. The child is approaching the vehicle on a street without clear separation, so the driver should slow down to avoid a potential collision."}
{"id": "train_04594", "split": "train", "clip_key": "titan_clip_159_000024_movie", "source": {"subset": "titan", "scenario": "clip_159", "frame": "000024"}, "frames": ["titan_clip_159_000024_movie_t-3.jpg", "titan_clip_159_000024_movie_t-2.jpg", "titan_clip_159_000024_movie_t-1.jpg", "titan_clip_159_000024_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way roadway and no median; pavement is smooth and motor traffic is light as the ego vehicle proceeds slowly along the left. A pedestrian with a backpack walks in the middle of the road ahead, moving away from the ego car and effectively constraining its pace. Farther ahead, another pedestrian at the left edge walks in the same direction near the travel path. On the right, a white kei truck is parked beside a construction wall, narrowing the lane and creating a pinch point the ego approaches. No oncoming vehicles or signals are visible.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking in the middle of the road, away from the ego car. The driver should slow down to ensure sufficient time to react and avoid hitting the pedestrian."}
{"id": "train_04595", "split": "train", "clip_key": "titan_clip_461_000180_movie", "source": {"subset": "titan", "scenario": "clip_461", "frame": "000180"}, "frames": ["titan_clip_461_000180_movie_t-3.jpg", "titan_clip_461_000180_movie_t-2.jpg", "titan_clip_461_000180_movie_t-1.jpg", "titan_clip_461_000180_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "A narrow urban street with a single marked lane and no median runs between mid-rise buildings; the pavement appears smooth and traffic is light. A small work truck is ahead in the ego lane, proceeding slowly and setting the pace. A gray truck is parked along the right curb, reducing available width near the sidewalk. No oncoming vehicles or pedestrians are visible. Orange traffic cones line the right edge by shuttered storefronts, creating a constrained shoulder but leaving the travel lane clear.", "hazard_reasoning": "There is a gray truck parked on the right side of the road. It restricts the available lane width and could cause a collision if not avoided, so you should carefully manoeuvre around it."}
{"id": "train_04596", "split": "train", "clip_key": "2020-0228-102841_010526_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "010526"}, "frames": ["2020-0228-102841_010526_movie_t-3.jpg", "2020-0228-102841_010526_movie_t-2.jpg", "2020-0228-102841_010526_movie_t-1.jpg", "2020-0228-102841_010526_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "An urban street with one lane each direction and a hatched center buffer. Pavement is dry and smooth, and traffic is light with vehicles moving steadily. A small pickup directly ahead in the ego lane travels at a steady speed and leads the ego vehicle. Across the center markings, an oncoming car approaches on the right, passing without conflict. On the left edge near the shops, a pedestrian in black pants carrying a backpack walks from the left toward the right and may enter the ego lane. Parked delivery trucks and bicycles line the curbs behind railings.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying a backpack, on the left side of the road walking to the right side. The pedestrian may enter the vehicle's lane unpredictably, so the driver should yield to avoid a collision."}
{"id": "train_04597", "split": "train", "clip_key": "titan_clip_1360_000360_movie", "source": {"subset": "titan", "scenario": "clip_1360", "frame": "000360"}, "frames": ["titan_clip_1360_000360_movie_t-3.jpg", "titan_clip_1360_000360_movie_t-2.jpg", "titan_clip_1360_000360_movie_t-1.jpg", "titan_clip_1360_000360_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian on the road", "environment_perception": "A narrow urban back street with unmarked two-way traffic runs between shopfronts, the patched asphalt rough and the overall flow very light. The ego vehicle continues along the left side as pedestrians share the roadway. Ahead on the left, a pedestrian wearing a white dress and a backpack walks away along the edge because there is no sidewalk, remaining within the ego vehicle's path and likely constraining its pace. Farther ahead to the right, a white van stands stopped facing the ego near the curb, and two people linger beside its front close to the carriageway, tightening the available gap. No traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian in front of the ego car, on the left side of the road, carrying a backpack and wearing a white dress and walking away from the ego car, because there is no sidewalk. The driver should yield because the pedestrian is walking on the road and may enter the vehicle's path."}
{"id": "train_04598", "split": "train", "clip_key": "2020-0203-114632_045848_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "045848"}, "frames": ["2020-0203-114632_045848_movie_t-3.jpg", "2020-0203-114632_045848_movie_t-2.jpg", "2020-0203-114632_045848_movie_t-1.jpg", "2020-0203-114632_045848_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop the vehicle to avoid rear-end collision.", "environment_perception": "An urban multi-lane arterial with smooth pavement and no physical median shows slow, congested flow. A gray van directly ahead in the ego lane is stopped with brake lights on because of traffic congestion and blocks the ego car's path. Farther ahead in the same lane, a white box truck queues with other vehicles and creeps forward, keeping the lane slow. A silver sedan at the left curb beside the ego car remains parked and does not enter the lane. No salient traffic signals or speed signs are visible.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, because of traffic congestion ahead. The driver should apply brakes and stop to avoid a collision with the halted vehicle and stalled traffic."}
{"id": "train_04599", "split": "train", "clip_key": "titan_clip_476_000054_movie", "source": {"subset": "titan", "scenario": "clip_476", "frame": "000054"}, "frames": ["titan_clip_476_000054_movie_t-3.jpg", "titan_clip_476_000054_movie_t-2.jpg", "titan_clip_476_000054_movie_t-1.jpg", "titan_clip_476_000054_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead.", "environment_perception": "An urban commercial street with a narrow single lane paved in blocks runs ahead with bollards and curbs but no center divider; traffic is light and slow. A pedestrian in a white shirt and black pants crosses directly in front of the ego vehicle from left to right, occupying the path and forcing a brief wait. A white van is ahead in the same lane, moving slowly away along the center of the lane and constraining the ego vehicle's pace once the crossing clears. A convex safety mirror on the right corner overlooks the junction, and storefronts line both sides with no signals visible.", "hazard_reasoning": "There is a pedestrian in white shirt and black pants, crossing the street in front of the ego car, to the left side. The pedestrian is stepping into the vehicle's path, so the driver must yield to avoid a collision."}
{"id": "train_04600", "split": "train", "clip_key": "titan_clip_1316_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1316_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1316_000204_movie_t-3_augB1.jpg", "titan_clip_1316_000204_movie_t-2_augB1.jpg", "titan_clip_1316_000204_movie_t-1_augB1.jpg", "titan_clip_1316_000204_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "A dense urban commercial street is shown with a narrow two-way road, one lane in each direction, no median, and worn but dry pavement; traffic is extremely light with no moving vehicles. Ahead in the center of the roadway, a pedestrian carrying an umbrella and wearing a green shirt walks away from the ego car, remaining in the ego lane and constraining its path. Orange cones and bollards sit along the right sidewalk by shuttered storefronts, and no salient signals or signs affect the scene.", "hazard_reasoning": "A pedestrian carrying an umbrella and wearing a green shirt, is walking in the middle of the road, away from the ego car. The driver should yield to the pedestrian to avoid a collision as they occupy the lane ahead."}
{"id": "train_04601", "split": "train", "clip_key": "2020-0204-103442_080764_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "080764"}, "frames": ["2020-0204-103442_080764_movie_t-3.jpg", "2020-0204-103442_080764_movie_t-2.jpg", "2020-0204-103442_080764_movie_t-1.jpg", "2020-0204-103442_080764_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane two-way street with narrow lanes and metal railings on both sides has a yellow center line, smooth dry pavement, and traffic is queued. A black sedan directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. Farther ahead in the same lane, a white van also waits in the line and constrains the flow. The oncoming lane shows no vehicles passing at this moment. A convex mirror on a right-side pole and closely spaced trees line the corridor, and the railings leave little shoulder space.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, because of traffic congestion ahead. As the sedan ahead is stopped due to congestion, you risk colliding with it if you do not stop promptly."}
{"id": "train_04602", "split": "train", "clip_key": "titan_clip_1087_000114_movie", "source": {"subset": "titan", "scenario": "clip_1087", "frame": "000114"}, "frames": ["titan_clip_1087_000114_movie_t-3.jpg", "titan_clip_1087_000114_movie_t-2.jpg", "titan_clip_1087_000114_movie_t-1.jpg", "titan_clip_1087_000114_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrians safely", "environment_perception": "A narrow two-way urban street lined with shops and apartments lacks a centerline or median; the dry asphalt looks slightly worn and traffic is very light. Ahead near the middle, a cyclist rides away along the travel lane, occupying the path and constraining the pace. On the right edge farther ahead, two pedestrians walk toward the ego while talking, using the roadway because there is no sidewalk and they may edge into the lane. Along the left curb close by, a pedestrian in green walks away beside storefronts, remaining near the margin but still within the carriageway.", "hazard_reasoning": "There are two pedestrians talking in a group, walking on the right side of the road, toward the ego car, because there is no sidewalk. The driver should manoeuvre around them safely to avoid a collision."}
{"id": "train_04603", "split": "train", "clip_key": "2020-0218-151547_009357_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "009357"}, "frames": ["2020-0218-151547_009357_movie_t-3.jpg", "2020-0218-151547_009357_movie_t-2.jpg", "2020-0218-151547_009357_movie_t-1.jpg", "2020-0218-151547_009357_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Yield to motorcycle merging ahead", "environment_perception": "An urban multi-lane arterial with a central divider and smooth pavement carries light to moderate same-direction traffic toward a signalized intersection ahead. A black motorcycle comes from the left lane and cuts across in front of the ego car into the ego lane, briefly taking the path. Farther ahead, a large coach in the middle lanes continues straight and loosely sets the pace for following vehicles. To the right, a line of cars in adjacent lanes slows near the intersection, creating light side-by-side congestion. Bright sun glare from the upper left casts long shadows across the roadway.", "hazard_reasoning": "There is a black motorcycle moving from the left lane, and cutting in front of the ego-car, into the ego-lane. You should yield to the motorcycle merging into your lane to prevent a collision."}
{"id": "train_04604", "split": "train", "clip_key": "2020-0206-142535_034461_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "034461"}, "frames": ["2020-0206-142535_034461_movie_t-3.jpg", "2020-0206-142535_034461_movie_t-2.jpg", "2020-0206-142535_034461_movie_t-1.jpg", "2020-0206-142535_034461_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with two same-direction lanes runs between mid-rise buildings; a low hedge median separates oncoming traffic and the dry pavement looks smooth, with light overall flow. A silver box truck directly ahead in the ego lane is stopped and holds the ego vehicle in place. The adjacent left lane ahead is clear. A few pedestrians are on the left sidewalk near a side street and keep to the curb. A no-entry sign marks that side street.", "hazard_reasoning": "There is a silver truck stopped in front of the ego car, in the ego lane. The stopped truck blocks the lane ahead, requiring the driver to stop to avoid a collision and reassess the situation under limited visibility."}
{"id": "train_04605", "split": "train", "clip_key": "2020-0207-151349_074939_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "074939"}, "frames": ["2020-0207-151349_074939_movie_t-3.jpg", "2020-0207-151349_074939_movie_t-2.jpg", "2020-0207-151349_074939_movie_t-1.jpg", "2020-0207-151349_074939_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs under an elevated structure, with two lanes in the ego direction and a guardrail median; the pavement is dry and traffic flows at a moderate, steady pace. A brown truck drives ahead in the ego lane and gradually pulls away from the ego car, effectively setting the pace. A white hatchback travels slightly ahead in the lane to the left at a similar speed, remaining parallel to the ego vehicle and potentially constraining a lane change. Pedestrians walk along the left sidewalk behind a fence, keeping clear of the roadway. Oncoming traffic moves on the opposite carriageway beyond the median.", "hazard_reasoning": "There is a brown truck driving in the ego lane, away from the ego car. The driver should follow the vehicle ahead to maintain safe distance and anticipate any changes in speed or traffic signals."}
{"id": "train_04606", "split": "train", "clip_key": "2020-0220-151845_054697_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-151845_054697_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-151845_054697_movie_t-3_augB1.jpg", "2020-0220-151845_054697_movie_t-2_augB1.jpg", "2020-0220-151845_054697_movie_t-1_augB1.jpg", "2020-0220-151845_054697_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs under an elevated structure, with a concrete barrier tight on the left; the pavement is dry and traffic is slow-moving. A red flatbed truck with a yellow-covered load is directly ahead in the ego lane and slows, constraining the ego vehicle's pace. In the adjacent right lane, a black SUV slightly ahead creeps forward beside the truck, limiting an easy lane change. Farther ahead in the right lane, several small vans queue and advance intermittently, keeping the flow congested. The left barrier and viaduct columns hem in the roadway and reduce sight lines.", "hazard_reasoning": "There is a red truck slowing in front of the ego car, in the ego lane. The truck's deceleration ahead reduces available stopping distance, so the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_04607", "split": "train", "clip_key": "2020-0203-114632_004965_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "004965"}, "frames": ["2020-0203-114632_004965_movie_t-3.jpg", "2020-0203-114632_004965_movie_t-2.jpg", "2020-0203-114632_004965_movie_t-1.jpg", "2020-0203-114632_004965_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction curves slightly right; the pavement is dry and intact, and traffic is moderate but slows near a small work area. Directly ahead in the ego lane, a white flatbed truck is stopped near the curb and blocks part of the lane, constraining the ego vehicle. Just beyond the crosswalk, a worker in front of the truck bends to place orange traffic cones, and one cone sits directly in front of the ego car. On the right, oncoming white vans proceed straight in their lane past the work area, passing close by.", "hazard_reasoning": "There is a traffic cone, in front of the ego car. The cone indicates ongoing construction or a lane obstruction, so the driver must stop to avoid entering the work area and ensure safety."}
{"id": "train_04608", "split": "train", "clip_key": "titan_clip_156_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_156_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_156_000204_movie_t-3_augB1.jpg", "titan_clip_156_000204_movie_t-2_augB1.jpg", "titan_clip_156_000204_movie_t-1_augB1.jpg", "titan_clip_156_000204_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street runs under an elevated rail with no median and worn pavement, and traffic remains light. Ahead in the ego lane, a white box truck moves slowly near the left curb under the bridge, constraining the ego vehicle's pace. From the near left, a pedestrian looking at a phone steps into the roadway and walks across toward the right through the ego lane. A side street branches to the right past a marked crossing. A red triangular stop sign is mounted on the left-side pillar.", "hazard_reasoning": "There is a pedestrian looking into the phone, wearing a white dress and carrying a handbag, about to cross the road from the left to the right side. The distracted pedestrian may step into the lane unexpectedly, so you should slow down to maintain control and avoid a potential collision."}
{"id": "train_04609", "split": "train", "clip_key": "2020-0131-135401_090474_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "090474"}, "frames": ["2020-0131-135401_090474_movie_t-3.jpg", "2020-0131-135401_090474_movie_t-2.jpg", "2020-0131-135401_090474_movie_t-1.jpg", "2020-0131-135401_090474_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes and smooth pavement approaches a signalized intersection; there is no physical median, and traffic is moderate and queued. A white van directly ahead in the ego lane is stopped at the red signal, holding the ego car. To the left, a large bus waits in the left lane a short distance ahead as part of the same queue. In the right lane, a white car is stopped slightly ahead, aligning with the halted flow. An overhead traffic light shows red above the intersection, and painted gore markings separate a right-side bay area.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of the red traffic lights. The van's stop warns the driver to also stop to prevent a rear-end collision under the red signal."}
{"id": "train_04610", "split": "train", "clip_key": "2020-0203-114632_013119_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "013119"}, "frames": ["2020-0203-114632_013119_movie_t-3.jpg", "2020-0203-114632_013119_movie_t-2.jpg", "2020-0203-114632_013119_movie_t-1.jpg", "2020-0203-114632_013119_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction runs between mid-rise buildings; the pavement is clear and traffic is light, slowing at a zebra crosswalk. Two pedestrians with short dark hair in black shirts are directly ahead, crossing from right to left on the crosswalk and occupying the ego lane, constraining progress. An oncoming white scooter approaches the crosswalk in its right-side lane at low speed, continuing past the crossing while giving room to the pedestrians. A black van ahead beyond the crosswalk in the ego lane waits or creeps forward, likely forming a short queue after the crossing.", "hazard_reasoning": "There are two pedestrians with short dark hair, wearing black shirts who are crossing the street, from the right side to the left side, at a pedestrian crosswalk. The driver should stop to yield to the pedestrians in the crosswalk and comply with the red signal to prevent a collision."}
{"id": "train_04611", "split": "train", "clip_key": "titan_clip_117_000108_movie", "source": {"subset": "titan", "scenario": "clip_117", "frame": "000108"}, "frames": ["titan_clip_117_000108_movie_t-3.jpg", "titan_clip_117_000108_movie_t-2.jpg", "titan_clip_117_000108_movie_t-1.jpg", "titan_clip_117_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street without a centerline runs between tall buildings; the asphalt looks mostly smooth with some patches, and traffic is light. Ahead in the middle of the roadway, a pedestrian wearing a brown shirt pulls a cart away from the ego vehicle, occupying the ego path. A small delivery truck is stopped along the left curb ahead, slightly protruding and narrowing the usable lane. Farther ahead, an oncoming car approaches in the opposite lane at a steady pace as the space tightens near the pedestrian and the stopped truck.", "hazard_reasoning": "There is a pedestrian wearing a brown shirt, pulling a cart in the middle of the road, away from the ego car. The pedestrian poses an obstruction in the travel lane, so the driver should slow down to maintain safe distance and avoid collision."}
{"id": "train_04612", "split": "train", "clip_key": "2020-0214-102601_050960_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "050960"}, "frames": ["2020-0214-102601_050960_movie_t-3.jpg", "2020-0214-102601_050960_movie_t-2.jpg", "2020-0214-102601_050960_movie_t-1.jpg", "2020-0214-102601_050960_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision.", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with a right-side guardrail median and dry, well-kept pavement; traffic is heavy and largely stop-and-go. A blue car directly ahead in the ego lane creeps forward and then slows again after moving prematurely before the queue ahead starts, constraining the ego vehicle's pace. In the lane to the left, a tarped light truck slightly ahead rolls forward intermittently alongside without merging. Farther ahead left, several white cars inch forward in the same direction, keeping the congestion dense. A roadside sign shows 40.", "hazard_reasoning": "There is a blue sedan car slowing down in the ego lane, because it prematurely began moving before vehicles ahead of it, started moving. The blue sedan's unexpected slowing poses a risk of collision if you don't reduce speed accordingly."}
{"id": "train_04613", "split": "train", "clip_key": "2020-0129-144857_086753_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "086753"}, "frames": ["2020-0129-144857_086753_movie_t-3.jpg", "2020-0129-144857_086753_movie_t-2.jpg", "2020-0129-144857_086753_movie_t-1.jpg", "2020-0129-144857_086753_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated roadway with two same-direction lanes climbs gently between sound barriers, and a painted gore with red delineator posts separates an adjacent right-side lane. The pavement is smooth and traffic flows lightly and steadily. A white van ahead in the ego lane drives away as the stream moves, keeping a steady pace. In the separated right lane, a white car proceeds uphill at similar speed while holding its line. Farther ahead in the same lane, a box truck continues uphill and loosely sets the pace for vehicles behind. The red posts along the gore clearly mark the separation without encroaching on the travel lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04614", "split": "train", "clip_key": "2020-0210-101957_012888_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "012888"}, "frames": ["2020-0210-101957_012888_movie_t-3.jpg", "2020-0210-101957_012888_movie_t-2.jpg", "2020-0210-101957_012888_movie_t-1.jpg", "2020-0210-101957_012888_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of red van lane change", "environment_perception": "An urban two-way street with two lanes in the ego direction and smooth pavement shows light traffic as the car proceeds straight. Ahead slightly right, a red van in the ego lane moves left into the adjacent left lane. To the left near the curb, a black taxi sits stopped along the edge, close to the lane but not moving into it. Farther ahead on the opposite side, a white van and a bus travel toward the camera in the oncoming lanes without encroaching. An overhead sign indicates Shinjuku City.", "hazard_reasoning": "There is a red van in the left lane, changing lanes from the ego lane to the left lane. This maneuver could encroach on the ego-vehicle's path, so the driver should be aware to avoid a potential collision."}
{"id": "train_04615", "split": "train", "clip_key": "titan_clip_1316_000204_movie", "source": {"subset": "titan", "scenario": "clip_1316", "frame": "000204"}, "frames": ["titan_clip_1316_000204_movie_t-3.jpg", "titan_clip_1316_000204_movie_t-2.jpg", "titan_clip_1316_000204_movie_t-1.jpg", "titan_clip_1316_000204_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "A dense urban commercial street is shown with a narrow two-way road, one lane in each direction, no median, and worn but dry pavement; traffic is extremely light with no moving vehicles. Ahead in the center of the roadway, a pedestrian carrying an umbrella and wearing a green shirt walks away from the ego car, remaining in the ego lane and constraining its path. Orange cones and bollards sit along the right sidewalk by shuttered storefronts, and no salient signals or signs affect the scene.", "hazard_reasoning": "A pedestrian carrying an umbrella and wearing a green shirt, is walking in the middle of the road, away from the ego car. The driver should yield to the pedestrian to avoid a collision as they occupy the lane ahead."}
{"id": "train_04616", "split": "train", "clip_key": "titan_clip_841_000336_movie", "source": {"subset": "titan", "scenario": "clip_841", "frame": "000336"}, "frames": ["titan_clip_841_000336_movie_t-3.jpg", "titan_clip_841_000336_movie_t-2.jpg", "titan_clip_841_000336_movie_t-1.jpg", "titan_clip_841_000336_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of workers near the roadway.", "environment_perception": "An urban street with tall buildings appears as a two-lane road where a temporary work zone of cones and striped rope narrows the left lane; the pavement is dry and traffic is light. A white van ahead in the ego lane moves slowly through the coned corridor, constraining the pace. On the left shoulder, several road workers adjust the cones close to the lane, and a man wearing a helmet and a uniform, holding a striped rod, stands at the left side of the road beside the barrier, close to the traffic path. On the right edge, a cyclist travels toward the camera along the curb outside the coned lane, remaining separate from the vehicle path. Construction hoarding lines the left side, with no prominent signals or speed signs visible.", "hazard_reasoning": "There is a man wearing a helmet and a uniform, holding a striped rod, and standing on the left side of the road. The driver should be aware of workers near the roadway as they may suddenly direct traffic or step into the lane."}
{"id": "train_04617", "split": "train", "clip_key": "titan_clip_1113_000312_movie", "source": {"subset": "titan", "scenario": "clip_1113", "frame": "000312"}, "frames": ["titan_clip_1113_000312_movie_t-3.jpg", "titan_clip_1113_000312_movie_t-2.jpg", "titan_clip_1113_000312_movie_t-1.jpg", "titan_clip_1113_000312_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian walking towards vehicle", "environment_perception": "An urban commercial street with brick paving forms a single narrow lane with no divider; the surface is smooth and there is no vehicular traffic, while pedestrian activity is heavy and continuous. On the left side near the ego vehicle, a pedestrian in a white shirt and black pants walks toward the camera in the roadway because the sidewalk has little room, and could enter the vehicle's path. Ahead in the center of the lane, several pedestrians also walk toward the ego, occupying the travel space and constraining progress. Near the right storefronts, other pedestrians drift along the curb and occasionally step toward the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the left side of the road toward the ego car because of the lack of room on the sidewalk. The pedestrian could step further into the lane unexpectedly, so the driver should be aware of their movement."}
{"id": "train_04618", "split": "train", "clip_key": "2020-0220-102630_036428_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "036428"}, "frames": ["2020-0220-102630_036428_movie_t-3.jpg", "2020-0220-102630_036428_movie_t-2.jpg", "2020-0220-102630_036428_movie_t-1.jpg", "2020-0220-102630_036428_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban commercial district with a multi-lane approach to a signalized intersection, no median, and clean pavement; traffic is moderate and slow near the stop line. A black van directly ahead in the ego lane is turning left at the intersection. A white van in the adjacent right lane waits by the crosswalk alongside the ego. On the near-left corner, several pedestrians and two bicycles stand at the curb, waiting to cross. Overhead traffic signals control the junction.", "hazard_reasoning": "There is a black van turning, on the left side of the intersection, in the ego lane. The black van's turning maneuver may cut into your path unexpectedly, so you should follow the vehicle ahead to maintain a safe distance and anticipate its movement."}
{"id": "train_04619", "split": "train", "clip_key": "2020-0214-145407_006320_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "006320"}, "frames": ["2020-0214-145407_006320_movie_t-3.jpg", "2020-0214-145407_006320_movie_t-2.jpg", "2020-0214-145407_006320_movie_t-1.jpg", "2020-0214-145407_006320_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban one-way road runs alongside and beneath an elevated expressway, with two same-direction lanes, no median, and dry slightly worn pavement; traffic flow is moderate and steady. A white microvan directly ahead in the ego lane continues at a constant speed and effectively sets the pace. In the right lane a similar white van farther ahead proceeds straight and gradually pulls away near the guardrail. Along the left curb a silver van is stopped by the sidewalk, leaving space but positioned to merge back into the lane after the ego vehicle passes. Farther ahead several small vans continue straight, and no prominent signals are visible.", "hazard_reasoning": "No immediate hazards are present due to steady traffic and a clear green signal, so no warning is necessary."}
{"id": "train_04620", "split": "train", "clip_key": "2020-0129-105040_058622_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "058622"}, "frames": ["2020-0129-105040_058622_movie_t-3.jpg", "2020-0129-105040_058622_movie_t-2.jpg", "2020-0129-105040_058622_movie_t-1.jpg", "2020-0129-105040_058622_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the hatchback", "environment_perception": "An urban two-way street with no median runs between closely spaced buildings; the narrow lanes have dry, slightly patched pavement and traffic is light. Ahead on the left edge of the ego lane, a hatchback is stopped at the curb, and the caption notes it is stopped because there are no parking spaces, so it occupies part of the travel space. No other vehicles are moving nearby and no clear oncoming traffic appears ahead. Shopfronts, bollards, and utility poles line the street, and stacked boxes remain on the right-side sidewalk. No salient traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a blue hatchback stopped on the left side of the road because there are no parking spaces. The stopped vehicle poses an obstacle in your lane, so you should carefully manoeuvre around it to maintain a safe passage."}
{"id": "train_04621", "split": "train", "clip_key": "titan_clip_557_000138_movie", "source": {"subset": "titan", "scenario": "clip_557", "frame": "000138"}, "frames": ["titan_clip_557_000138_movie_t-3.jpg", "titan_clip_557_000138_movie_t-2.jpg", "titan_clip_557_000138_movie_t-1.jpg", "titan_clip_557_000138_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with shops lines a single undivided lane on smooth pavement, and motor traffic is absent. In the middle distance a pedestrian wearing a white shirt and black pants crosses the lane from right to left in the middle of the road, directly in the vehicle's path. Two pedestrians at the left edge in the near foreground walk along the roadway toward the camera and briefly encroach on the lane. Farther ahead another pedestrian walks away near the center of the lane, influencing the vehicle's pace. A parked bicycle with a front basket stands at the right curb near a storefront.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, crossing the street in the middle of the road, from the right side to the left side. Slow down because the pedestrian may step into your path unexpectedly."}
{"id": "train_04622", "split": "train", "clip_key": "2020-0205-103411_090234_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "090234"}, "frames": ["2020-0205-103411_090234_movie_t-3.jpg", "2020-0205-103411_090234_movie_t-2.jpg", "2020-0205-103411_090234_movie_t-1.jpg", "2020-0205-103411_090234_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban arterial with two lanes in the ego direction runs straight under a pedestrian overpass, divided from oncoming traffic by a hedge median; the asphalt is dry and the flow is heavy and slow-moving. A white hatchback directly ahead in the ego lane slows for a red light and dictates the car's pace. To the right, a large truck in the adjacent lane also slows toward the same queue, partly obstructing the forward view. On the left, a white van slightly ahead proceeds in the outer lane with small gaps but stays in its lane without merging. Oncoming traffic beyond the median moves steadily, and no unusual obstacles are visible.", "hazard_reasoning": "There is a white hatchback slowing down in the ego lane, because of a red traffic light. Slowing down ensures safe deceleration and prevents a rear-end collision at the red light."}
{"id": "train_04623", "split": "train", "clip_key": "2020-0225-102455_059158_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "059158"}, "frames": ["2020-0225-102455_059158_movie_t-3.jpg", "2020-0225-102455_059158_movie_t-2.jpg", "2020-0225-102455_059158_movie_t-1.jpg", "2020-0225-102455_059158_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two or more lanes per direction and a planted median runs between tall buildings; the pavement is dry and intact, and traffic is light as the ego approaches a wide signalized intersection with a zebra crossing. A white van ahead in the ego lane drives away from the camera at a steady pace. On the opposite carriageway to the right, several oncoming cars proceed toward the camera behind the median and do not interact with the ego lane. A pedestrian stands on the left sidewalk near the intersection, stationary at the curb.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. Following this vehicle allows you to monitor its speed and movements, giving you more time to react to any sudden stops."}
{"id": "train_04624", "split": "train", "clip_key": "2020-0213-143552_040544_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "040544"}, "frames": ["2020-0213-143552_040544_movie_t-3.jpg", "2020-0213-143552_040544_movie_t-2.jpg", "2020-0213-143552_040544_movie_t-1.jpg", "2020-0213-143552_040544_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of scooter on left side", "environment_perception": "An urban multi-lane road under an elevated structure runs straight with smooth asphalt, and traffic is light with same-direction flow. A large white box truck ahead in the ego lane travels steadily and effectively sets the ego vehicle's pace. On the left at a side street, a white scooter is stopped at the edge, waiting to turn onto this road and potentially enter the ego lane. Several vehicles are parked along the right shoulder under the columns but remain outside the travel lanes.", "hazard_reasoning": "There is a white scooter stopped at the left side of the road, because it is waiting to turn onto the ego car's road. The scooter may merge into your path unexpectedly to turn, so you should be aware of this potential movement."}
{"id": "train_04625", "split": "train", "clip_key": "titan_clip_83_000528_movie", "source": {"subset": "titan", "scenario": "clip_83", "frame": "000528"}, "frames": ["titan_clip_83_000528_movie_t-3.jpg", "titan_clip_83_000528_movie_t-2.jpg", "titan_clip_83_000528_movie_t-1.jpg", "titan_clip_83_000528_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban street lined with midrise buildings and trees has a single narrow travel lane with curbside parking on both sides, smooth pavement, and light traffic progressing slowly. A white box truck is stopped on the right curb with its rear open as it is being loaded, projecting slightly into the lane and narrowing the path. On the left, a dark van remains parked with its tailgate raised, further constricting the corridor the ego vehicle follows. Ahead in the lane, a small car proceeds cautiously between the parked vehicles, setting a reduced pace for the ego vehicle. Pedestrians on the right sidewalk pass the loading area but stay off the roadway.", "hazard_reasoning": "There is a white truck parked on the right side of the road because it is being loaded. Drivers should manoeuvre carefully around the truck because it partially blocks the sidewalk and may conceal pedestrians stepping into the roadway."}
{"id": "train_04626", "split": "train", "clip_key": "titan_clip_1162_000156_movie", "source": {"subset": "titan", "scenario": "clip_1162", "frame": "000156"}, "frames": ["titan_clip_1162_000156_movie_t-3.jpg", "titan_clip_1162_000156_movie_t-2.jpg", "titan_clip_1162_000156_movie_t-1.jpg", "titan_clip_1162_000156_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on right side", "environment_perception": "A narrow urban back street with a single two-way lane and block-paved surface appears clean and dry, and traffic is light. Orange cones line the left curb and a bicycle is parked by a doorway on the right, tightening the corridor. An oncoming white van ahead waits near the center of the lane, constraining the ego vehicle's path. Farther ahead, a small truck is stopped at the right curb, further narrowing the available space. On the right side close by, a pedestrian in a green shirt and beige shorts walks leftward along the edge near the parked bike.", "hazard_reasoning": "There is a pedestrian wearing a green shirt and beige shorts, and walking to the left, on the right side of the road. The pedestrian may step into the lane unexpectedly, so the driver should be cautious and prepared to slow down or stop."}
{"id": "train_04627", "split": "train", "clip_key": "2020-0218-103119_041098_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "041098"}, "frames": ["2020-0218-103119_041098_movie_t-3.jpg", "2020-0218-103119_041098_movie_t-2.jpg", "2020-0218-103119_041098_movie_t-1.jpg", "2020-0218-103119_041098_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop immediately to avoid collision with the truck", "environment_perception": "An urban two-way road with one lane each direction and double center lines has smooth dry pavement and light-to-moderate flow that briefly slows. A white box truck directly ahead in the ego lane is stopping, holding the lane and constraining the ego car. A silver wagon alongside the truck on the left advances in the same direction, passing slowly along the curbside space. On the right, a white SUV approaches as oncoming traffic in its lane, continuing straight past the scene.", "hazard_reasoning": "The white truck is stopping in front of the ego car, in the ego lane. The driver should stop immediately to avoid a collision since the truck ahead is halting and the forward view is blocked."}
{"id": "train_04628", "split": "train", "clip_key": "2020-0131-135401_089690_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "089690"}, "frames": ["2020-0131-135401_089690_movie_t-3.jpg", "2020-0131-135401_089690_movie_t-2.jpg", "2020-0131-135401_089690_movie_t-1.jpg", "2020-0131-135401_089690_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial runs between mid-rise buildings, with a guardrail divider on the right and smooth pavement; traffic is moderate and flows steadily. A white van directly ahead in the ego lane drives away and picks up speed under a green traffic light, increasing the gap. A small silver car ahead in the left adjacent lane continues straight at a similar pace, remaining parallel to the ego vehicle. A green-tarp light truck close on the far left lane rolls ahead without signaling, which limits any immediate left merge.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04629", "split": "train", "clip_key": "titan_clip_521_000570_movie", "source": {"subset": "titan", "scenario": "clip_521", "frame": "000570"}, "frames": ["titan_clip_521_000570_movie_t-3.jpg", "titan_clip_521_000570_movie_t-2.jpg", "titan_clip_521_000570_movie_t-1.jpg", "titan_clip_521_000570_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrians at crosswalk", "environment_perception": "A narrow urban street lined with shops lacks a centerline and has a fresh zebra crosswalk; pavement is smooth and traffic is light with no nearby vehicles. Two pedestrians wearing dresses are directly ahead in the crosswalk moving from the right toward the left side, crossing to the left and occupying the ego lane, so they control the vehicle's pace. Another pedestrian stands on the right sidewalk near a doorway by the curb without entering the road, while a person farther ahead walks along the left sidewalk. A blue sign with a left-pointing arrow on the right facade directs traffic left as the road curves that way.", "hazard_reasoning": "There are two pedestrians wearing dresses and crossing to the left side at the crosswalk ahead of the ego-car. Stop to allow them to cross safely."}
{"id": "train_04630", "split": "train", "clip_key": "2020-0213-143552_019313_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "019313"}, "frames": ["2020-0213-143552_019313_movie_t-3.jpg", "2020-0213-143552_019313_movie_t-2.jpg", "2020-0213-143552_019313_movie_t-1.jpg", "2020-0213-143552_019313_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane two-way road curves gently right, with smooth pavement and a median of red bollards separating opposing flows; traffic appears moderate. A gray canvas-covered truck directly ahead in the ego lane accelerates away as the light has just turned green, briefly setting the pace. A silver van runs alongside to the left in the adjacent same-direction lane, maintaining speed without signaling a lane change. In the opposing lane to the right, a white truck approaches beyond the bollards as the streams pass safely.", "hazard_reasoning": "There is a gray truck accelerating in the ego lane, because the traffic light has just turned green. The driver should start moving now to follow the green light and maintain traffic flow."}
{"id": "train_04631", "split": "train", "clip_key": "2020-0220-102630_025247_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "025247"}, "frames": ["2020-0220-102630_025247_movie_t-3.jpg", "2020-0220-102630_025247_movie_t-2.jpg", "2020-0220-102630_025247_movie_t-1.jpg", "2020-0220-102630_025247_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes, no median, and smooth pavement carries heavy, stop-and-go traffic. A large white box truck directly ahead in the ego lane is stopped because of congestion ahead, blocking the ego vehicle's path. To the right, a silver cargo truck is alongside in the adjacent same-direction lane and remains halted, preventing an easy lane change. A sidewalk with metal railings lines the left side.", "hazard_reasoning": "There is a white truck stopped in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should stop to avoid colliding with the stationary truck and adapt to the slowed traffic."}
{"id": "train_04632", "split": "train", "clip_key": "2020-0217-110854_002615_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "002615"}, "frames": ["2020-0217-110854_002615_movie_t-3.jpg", "2020-0217-110854_002615_movie_t-2.jpg", "2020-0217-110854_002615_movie_t-1.jpg", "2020-0217-110854_002615_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban commercial street with a single narrow lane in the ego's direction has wet pavement and heavy stop-and-go traffic. A red delivery scooter directly ahead in the ego lane slows because congestion builds ahead, keeping the ego vehicle's pace low. Just beyond it, a white sedan slightly to the right creeps forward in the same direction and constrains the available gap. Farther ahead, a garbage truck sits almost stationary in the lane, forming the head of the queue. An overhead pedestrian crossing sign is visible. On the left, a silver van stands with its sliding door open, narrowing the roadway beside the queue.", "hazard_reasoning": "There is a red scooter slowing down in the ego lane because of the traffic congestion ahead on the road. The driver should stop to avoid a collision with the slowing scooter due to the congested traffic ahead."}
{"id": "train_04633", "split": "train", "clip_key": "2020-0203-114632_060724_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "060724"}, "frames": ["2020-0203-114632_060724_movie_t-3.jpg", "2020-0203-114632_060724_movie_t-2.jpg", "2020-0203-114632_060724_movie_t-1.jpg", "2020-0203-114632_060724_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the traffic cones.", "environment_perception": "An urban scene with tall buildings lines a smooth, dry roadway where the ego travels in a single left-side lane that curves right to join a larger arterial. A concrete barrier separates the main lanes to the right, and overall traffic on that roadway appears light. White diagonal stripes, taper markings, and orange-and-white traffic cones in the ego lane indicate the lane is ending and merging right. A dark sedan proceeds along the main lanes to the right in the same direction, potentially influencing the merge. A pedestrian walks along the left sidewalk near the buildings without approaching the carriageway. Overhead blue directional signs span the road ahead, and the merge area is constrained by guardrails.", "hazard_reasoning": "There are right and white striped traffic cones in ego-cars lane, indicating that the lane is ending. The driver should manoeuvre around the cones to avoid entering a closed lane and maintain safe travel."}
{"id": "train_04634", "split": "train", "clip_key": "titan_clip_389_000102_movie", "source": {"subset": "titan", "scenario": "clip_389", "frame": "000102"}, "frames": ["titan_clip_389_000102_movie_t-3.jpg", "titan_clip_389_000102_movie_t-2.jpg", "titan_clip_389_000102_movie_t-1.jpg", "titan_clip_389_000102_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck.", "environment_perception": "A narrow urban shopping street has a two-way carriageway paved with bricks, no centerline, and smooth surface; traffic is very light with no moving vehicles near the camera. A white truck is parked on the left side of the road just ahead, occupying part of the lane and constraining available space. On the right, a construction worker stands beside a fenced work site with orange cones at the curb, remaining outside the lane. Farther ahead, several bicycles are parked along the right edge near storefronts as static obstacles. No traffic signals are visible.", "hazard_reasoning": "There is a white truck parked on the left side of the road. This reduces the available lane width, so the driver must manoeuvre carefully around it to avoid collision."}
{"id": "train_04635", "split": "train", "clip_key": "titan_clip_193_000402_movie", "source": {"subset": "titan", "scenario": "clip_193", "frame": "000402"}, "frames": ["titan_clip_193_000402_movie_t-3.jpg", "titan_clip_193_000402_movie_t-2.jpg", "titan_clip_193_000402_movie_t-1.jpg", "titan_clip_193_000402_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each way runs between mid-rise buildings, with no median and a red side lane on the right; the pavement is dry and traffic is light to moderate amid many parked cars. On the immediate left at the curb, a silver minivan is stopped with its driver door open and a seated person visible, the door protruding into the ego lane and narrowing space. Ahead at the left edge, a pedestrian in a white shirt waits to cross from the left side to the right side and may enter the ego lane. In the opposite lane, a maroon SUV approaches and passes, constraining lateral room as they meet.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, waiting to cross on the left side of the road, from the left side to the right side. The pedestrian could step into the roadway unexpectedly, so the driver should slow down to maintain safety."}
{"id": "train_04636", "split": "train", "clip_key": "titan_clip_495_000288_movie", "source": {"subset": "titan", "scenario": "clip_495", "frame": "000288"}, "frames": ["titan_clip_495_000288_movie_t-3.jpg", "titan_clip_495_000288_movie_t-2.jpg", "titan_clip_495_000288_movie_t-1.jpg", "titan_clip_495_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian directing traffic.", "environment_perception": "An urban two-way street with one lane in each direction has no median, smooth pavement, and light traffic. Ahead near the center-right, a pedestrian wearing a yellow vest and blue pants walks in the middle of the road toward the right side while directing traffic, making their movement relevant to the ego vehicle's path. Farther ahead along the oncoming curb, a white truck is stopped and influences the flow. On the left sidewalk, pedestrians stand and walk near a bus stop but remain off the roadway. A no-parking sign is posted on the left.", "hazard_reasoning": "There is a pedestrian wearing a yellow vest and blue pants, walking in the middle of the road to the right side, because they are directing traffic. The driver should be aware of this pedestrian as they may move unpredictably into the travel lane."}
{"id": "train_04637", "split": "train", "clip_key": "2020-0206-142535_001531_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "001531"}, "frames": ["2020-0206-142535_001531_movie_t-3.jpg", "2020-0206-142535_001531_movie_t-2.jpg", "2020-0206-142535_001531_movie_t-1.jpg", "2020-0206-142535_001531_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane one-way street with smooth pavement runs between mid-rise buildings, and traffic is light as the road climbs gently. A black van directly ahead in the ego lane accelerates away, opening the gap to the camera vehicle. A white box truck is stopped ahead-right at the curb in the adjacent right lane, blocking that lane and making it likely that any vehicles there will merge left toward the ego lane. Several pedestrians stand and walk on the left sidewalk behind guardrails near a shop, with no one entering the roadway. No traffic signals are prominently visible in this segment.", "hazard_reasoning": "There is a black van in the ego lane, accelerating away from the ego car. Its acceleration opens a gap that may invite a lane change, but the adjacent white truck obstructs visibility, increasing the risk of a collision if you merge without clear sight. You should start moving promptly but cautiously to maintain safe positioning."}
{"id": "train_04638", "split": "train", "clip_key": "2020-0218-103119_026172_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "026172"}, "frames": ["2020-0218-103119_026172_movie_t-3.jpg", "2020-0218-103119_026172_movie_t-2.jpg", "2020-0218-103119_026172_movie_t-1.jpg", "2020-0218-103119_026172_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane each way curves right, separated by a row of flexible bollards; the pavement looks smooth with a few patches and traffic is moderate. A white box truck ahead in the ego lane drives away along the curve, effectively setting the ego car's pace. On the far side of the median, several oncoming trucks and cars move slowly in their lanes but stay well separated from the ego path. Pedestrians on the left sidewalk near a storefront walk and stand with bicycles, remaining clear of the roadway. Blue overhead direction signs are visible ahead.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The parked truck partially obstructing the sidewalk could conceal pedestrians stepping onto the road, so follow the vehicle ahead to maintain a safe distance and react promptly."}
{"id": "train_04639", "split": "train", "clip_key": "titan_clip_1028_000594_movie", "source": {"subset": "titan", "scenario": "clip_1028", "frame": "000594"}, "frames": ["titan_clip_1028_000594_movie_t-3.jpg", "titan_clip_1028_000594_movie_t-2.jpg", "titan_clip_1028_000594_movie_t-1.jpg", "titan_clip_1028_000594_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "be aware of pedestrian entering truck", "environment_perception": "A narrow urban two-way street without a centerline runs between low-rise buildings, the pavement smooth and dry, and traffic light with no oncoming vehicles visible. Ahead on the left, a white-and-green box truck is parked tight to the curb yet partly intruding into the travel lane, constraining the ego vehicle's path. Beside it, a pedestrian walks toward the cab and gets in, staying close to the roadway. A roadside sign on the left indicates a parking or stopping restriction near where the truck is stopped.", "hazard_reasoning": "There is a white-and-green truck parked on the left side of the road, because a pedestrian is getting into it. The pedestrian may step into the road unexpectedly as they enter the truck, so the driver should be prepared for sudden movement."}
{"id": "train_04640", "split": "train", "clip_key": "titan_clip_1382_000300_movie", "source": {"subset": "titan", "scenario": "clip_1382", "frame": "000300"}, "frames": ["titan_clip_1382_000300_movie_t-3.jpg", "titan_clip_1382_000300_movie_t-2.jpg", "titan_clip_1382_000300_movie_t-1.jpg", "titan_clip_1382_000300_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of the pedestrian on the road", "environment_perception": "A dense urban shopping street with no centerline forms a single narrow undivided lane on worn pavement, and traffic is light with movement mainly shared with pedestrians. On the right edge near the camera, a pedestrian wearing a white shirt and carrying a backpack walks away from the ego vehicle along the curb, close to the travel path. Just ahead on the right, a person pushes a large red delivery cart out from a shop and rolls partly into the roadway, potentially encroaching on the ego lane. Farther ahead near the center of the lane, two pedestrians walk away in the same direction, occupying the path and limiting speed. Merchandise stacks and shop displays along the left further reduce clearance.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and carrying a backpack, walking on the right side of the road, away from the ego car. The driver should be aware of this pedestrian to prevent a potential collision."}
{"id": "train_04641", "split": "train", "clip_key": "2020-0207-101955_016496_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "016496"}, "frames": ["2020-0207-101955_016496_movie_t-3.jpg", "2020-0207-101955_016496_movie_t-2.jpg", "2020-0207-101955_016496_movie_t-1.jpg", "2020-0207-101955_016496_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction runs straight with a narrow raised median and smooth pavement, and traffic moves at a light to moderate pace. Ahead in the ego lane, a white truck with a green tarp accelerates away, increasing its gap while remaining centered in the lane. To the right beyond the median, an oncoming dark pickup proceeds steadily in the opposite lane and passes without interaction. On the far right sidewalk, a pedestrian stands by the fence, separated from the road and not entering the travelway.", "hazard_reasoning": "There is a white truck with a green tarp, accelerating away from the ego car, in the ego lane. The driver should follow the vehicle ahead to maintain a safe distance and adapt to its speed changes while ensuring sufficient reaction time."}
{"id": "train_04642", "split": "train", "clip_key": "2020-0218-103119_005859_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "005859"}, "frames": ["2020-0218-103119_005859_movie_t-3.jpg", "2020-0218-103119_005859_movie_t-2.jpg", "2020-0218-103119_005859_movie_t-1.jpg", "2020-0218-103119_005859_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban residential street with smooth pavement and green edge lanes runs straight between buildings, functioning as a two-way road without a median and carrying light traffic throughout. On the left near the camera, a pedestrian walks along the curb on the narrow sidewalk parallel to the car, close to the lane and potentially stepping into it. A parked scooter ahead on the left encroaches slightly on the roadway and narrows the passage. On the right by a vending machine, parked bicycles and a line of orange cones stay at the edge and do not block the lane. No traffic signals or moving vehicles are visible, and the approach ahead remains clear.", "hazard_reasoning": "The orange traffic cones mark a construction area that narrows the lane, so the driver should slow down and move away from the cones to maintain safety."}
{"id": "train_04643", "split": "train", "clip_key": "2020-0203-154554_039863_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "039863"}, "frames": ["2020-0203-154554_039863_movie_t-3.jpg", "2020-0203-154554_039863_movie_t-2.jpg", "2020-0203-154554_039863_movie_t-1.jpg", "2020-0203-154554_039863_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, the asphalt dry and smooth with a concrete barrier on the right and moderate same-direction traffic flowing steadily. A white box truck travels ahead in the ego lane, pulling away from the camera and effectively setting the ego car's following pace. A dark van is alongside in the adjacent right lane near the camera, maintaining speed beside the ego vehicle and blocking an immediate merge to the right. Farther ahead to the right, a small flatbed truck continues near the barrier in the right lane, occupying that lane and shaping the available gaps.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04644", "split": "train", "clip_key": "titan_clip_233_000204_movie", "source": {"subset": "titan", "scenario": "clip_233", "frame": "000204"}, "frames": ["titan_clip_233_000204_movie_t-3.jpg", "titan_clip_233_000204_movie_t-2.jpg", "titan_clip_233_000204_movie_t-1.jpg", "titan_clip_233_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with brick paving and no center line runs between tall buildings, with bollards along the right edge; traffic is light and slow as the ego-vehicle proceeds carefully. On the left just ahead, a group of pedestrians stands beside several wheeled carts at the curb, partly intruding into the roadway and narrowing the passage. Ahead on the left edge, a woman in a white shirt and gray skirt walks away from the ego while holding an umbrella, keeping left to pass the carts and potentially encroaching on the ego vehicle's path. Farther ahead in the lane, a small white van moves slowly near the center of the street, limiting the ego-vehicle's pace. Bright midday sun creates strong glare but the pavement appears smooth and unobstructed aside from the carts and pedestrians.", "hazard_reasoning": "A woman wearing a white shirt and a gray skirt, holding an umbrella over her head, and walking on the left side of the road, away from the ego car, because of wheeled carts. She may step into the vehicle lane unexpectedly to avoid the carts, so the driver should slow down to reduce collision risk."}
{"id": "train_04645", "split": "train", "clip_key": "2020-0228-102841_046761_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "046761"}, "frames": ["2020-0228-102841_046761_movie_t-3.jpg", "2020-0228-102841_046761_movie_t-2.jpg", "2020-0228-102841_046761_movie_t-1.jpg", "2020-0228-102841_046761_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear collision", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection, the pavement smooth and traffic light to moderate as vehicles queue. In the ego lane a white van directly ahead is stopped at the stop line because the signal shows red, holding the ego vehicle. In the adjacent right lane, another white van waits slightly ahead at the same light, forming a short queue that limits an immediate lane change. Pedestrians walk along the left sidewalk near the junction, and cross-traffic is visible beyond the intersection.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid rear-ending the halted vehicle."}
{"id": "train_04646", "split": "train", "clip_key": "titan_clip_1313_000444_movie", "source": {"subset": "titan", "scenario": "clip_1313", "frame": "000444"}, "frames": ["titan_clip_1313_000444_movie_t-3.jpg", "titan_clip_1313_000444_movie_t-2.jpg", "titan_clip_1313_000444_movie_t-1.jpg", "titan_clip_1313_000444_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrians on the right side", "environment_perception": "An urban commercial street curves gently right with a single same-direction lane, no divider, and smooth pavement; traffic is light. A silver van ahead in the ego lane moves slowly toward the bend and intersection, setting the ego vehicle's pace. On the right edge, a group of pedestrians wearing white shirts and black and gray pants walk away from the ego car along the curb, close to the lane and may enter it. A lone pedestrian by the left storefront proceeds along the sidewalk. A distant traffic signal and some roadside construction fencing are visible ahead.", "hazard_reasoning": "There is a group of pedestrians, wearing white shirts and black and gray pants, walking away from the ego car, on the right side of the road. The driver should be cautious as pedestrians walking close to the road may unexpectedly step into the lane, requiring vigilance."}
{"id": "train_04647", "split": "train", "clip_key": "2020-0226-140503_009852_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "009852"}, "frames": ["2020-0226-140503_009852_movie_t-3.jpg", "2020-0226-140503_009852_movie_t-2.jpg", "2020-0226-140503_009852_movie_t-1.jpg", "2020-0226-140503_009852_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial approaches a large signalized intersection on smooth asphalt, with moderate traffic and no physical median. Ahead on the right, a silver van proceeds through the intersection along the curb lane and pulls away from the ego car. On the left side, a stream of oncoming vehicles moves straight through the junction in their lanes and remains separate from the ego path. Near the right corner, several pedestrians and cyclists gather by the crosswalk, with a couple of cyclists rolling slowly along the red-painted bike lane without entering the roadway. Overhead signals are present, and a red aspect is visible on the right.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car. Follow the vehicle ahead to maintain safe distance and prepare for any sudden stops."}
{"id": "train_04648", "split": "train", "clip_key": "titan_clip_285_000294_movie", "source": {"subset": "titan", "scenario": "clip_285", "frame": "000294"}, "frames": ["titan_clip_285_000294_movie_t-3.jpg", "titan_clip_285_000294_movie_t-2.jpg", "titan_clip_285_000294_movie_t-1.jpg", "titan_clip_285_000294_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban two-way street with one lane each direction has smooth asphalt and light traffic, with no moving vehicles immediately ahead. On the right, a silver semi truck is parked along the curb and partly in the roadway, narrowing the usable lane as the car passes. On the left close to the camera, a pedestrian carrying bags walks away along the building edge near the travel lane, reducing clearance. Farther left by a storefront, several bicycles are parked and a bright orange traffic cone stands at the doorway, adding roadside obstacles. No notable traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a silver semi truck parked on the right side of the road. This parked vehicle creates a significant blind spot and could hide oncoming hazards, so manoeuvre carefully around the truck."}
{"id": "train_04649", "split": "train", "clip_key": "2020-0207-101955_118896_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "118896"}, "frames": ["2020-0207-101955_118896_movie_t-3.jpg", "2020-0207-101955_118896_movie_t-2.jpg", "2020-0207-101955_118896_movie_t-1.jpg", "2020-0207-101955_118896_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban three-lane arterial runs under an elevated expressway with smooth pavement and heavy, stop-and-go traffic. Ahead in the ego lane, a blue hatchback is stopped some distance from the ego car because of congestion ahead, limiting the ego vehicle's progress. In the lane to the left, a black minivan slightly ahead moves forward slowly, passing the stopped queue. In the right lane, several white vans and cars line up near the curb and creep or wait, contributing to the bottleneck ahead.", "hazard_reasoning": "a blue hatchback has stopped in the ego lane, away from the ego car because of the traffic congestion ahead. The stopped vehicle poses a collision risk if the driver does not slow down and stop in time, aligning with the need to stop immediately under this situation."}
{"id": "train_04650", "split": "train", "clip_key": "2020-0203-114632_034606_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "034606"}, "frames": ["2020-0203-114632_034606_movie_t-3.jpg", "2020-0203-114632_034606_movie_t-2.jpg", "2020-0203-114632_034606_movie_t-1.jpg", "2020-0203-114632_034606_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "In a busy urban center, the ego car is on a two-way street with one lane in each direction divided by solid white lines; the pavement is smooth and traffic is heavy ahead. A white van directly ahead in the ego lane is stopped because of congestion, blocking the path and determining the ego vehicle's pace. An oncoming green city bus to the right proceeds straight in its own lane and does not encroach. Pedestrians move along both sidewalks behind railings and stay out of the carriageway. A 50 km/h speed limit sign is visible on the left with blue directional signs overhead.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid a collision with the stationary vehicle ahead."}
{"id": "train_04651", "split": "train", "clip_key": "2020-0220-102630_117842_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "117842"}, "frames": ["2020-0220-102630_117842_movie_t-3.jpg", "2020-0220-102630_117842_movie_t-2.jpg", "2020-0220-102630_117842_movie_t-1.jpg", "2020-0220-102630_117842_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with one lane in each direction and a solid centerline has smooth pavement and moderate flow that compresses near a signalized intersection ahead. A black hatchback is stopped directly ahead in the ego lane because of congestion at the intersection, holding the ego car's pace. Oncoming vehicles to the right, including a van and a sedan, move past steadily in their lane without conflict. Two cyclists travel along the left edge in the same direction, staying by the curb and not entering the lane. A 40 km/h speed limit sign is visible on the left, and overhead traffic lights mark the junction.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead at the intersection. The driver should follow the vehicle ahead to maintain a safe distance and avoid collision."}
{"id": "train_04652", "split": "train", "clip_key": "2020-0210-101957_019160_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_019160_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_019160_movie_t-3_augB1.jpg", "2020-0210-101957_019160_movie_t-2_augB1.jpg", "2020-0210-101957_019160_movie_t-1_augB1.jpg", "2020-0210-101957_019160_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of cutting motorcycle", "environment_perception": "An urban arterial with three same-direction lanes and smooth pavement runs amid dense buildings, and traffic remains heavy and slow. Directly ahead, a black motorcycle merges from the left into the ego lane and takes the gap in front, so the ego vehicle settles behind it. Farther ahead in the same lane, a white van inches forward in the queue and constrains the motorcycle's speed. To the right, a large silver box truck proceeds slowly in the adjacent lane, limiting visibility and making a right-lane change difficult. Overhead blue signs provide route guidance toward Route 8 destinations including Tetsugakudo and Mejiro.", "hazard_reasoning": "There is a black motorcycle cutting in front of the ego car from the left lane. This unexpected maneuver could force the driver to brake or swerve, so be aware of the motorcycle's movement."}
{"id": "train_04653", "split": "train", "clip_key": "2020-0203-114632_005278_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_005278_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_005278_movie_t-3_augB1.jpg", "2020-0203-114632_005278_movie_t-2_augB1.jpg", "2020-0203-114632_005278_movie_t-1_augB1.jpg", "2020-0203-114632_005278_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately for construction worker", "environment_perception": "An urban two-way street with one narrow lane per direction and no median has smooth pavement but a temporary work zone ahead, so flow is intermittent. Ahead in the ego lane, a worker in a reflective jacket and helmet stands in the middle holding a traffic wand, directing vehicles around construction on the left and holding traffic as needed. In the oncoming lane, a small truck followed by a bus moves slowly past the narrowed section toward the worker, occupying the usable path and constraining the ego vehicle's progress. On the left, a work flatbed and equipment sit within cones, encroaching into the ego lane and narrowing the carriageway. A pedestrian waits on the right sidewalk near a bus stop.", "hazard_reasoning": "There is a person wearing a reflective jacket and a helmet, holding a traffic wand, and standing in the middle of the road, because of construction work on the left. The driver must stop to avoid colliding with the worker and comply with the temporary traffic control."}
{"id": "train_04654", "split": "train", "clip_key": "2020-0225-145150_010066_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "010066"}, "frames": ["2020-0225-145150_010066_movie_t-3.jpg", "2020-0225-145150_010066_movie_t-2.jpg", "2020-0225-145150_010066_movie_t-1.jpg", "2020-0225-145150_010066_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with mid-rise apartments has two same-direction lanes and a narrow curb strip on the left; the pavement is smooth and traffic is queued at a signal. A silver minivan directly ahead in the ego lane is stopped because the overhead traffic light shows red, holding the ego vehicle. In the adjacent right lane, a black van slightly ahead also waits in line, creeping forward and paralleling the ego's position. On the left sidewalk, three pedestrians walk away from the camera along the hedge while staying off the roadway. The red signal controls the flow and keeps the queue stationary.", "hazard_reasoning": "There is a silver minivan stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver needs to stop to avoid colliding with the stationary vehicle at the red light, ensuring safe following distance and compliance with the traffic signal."}
{"id": "train_04655", "split": "train", "clip_key": "2020-0129-144857_067651_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "067651"}, "frames": ["2020-0129-144857_067651_movie_t-3.jpg", "2020-0129-144857_067651_movie_t-2.jpg", "2020-0129-144857_067651_movie_t-1.jpg", "2020-0129-144857_067651_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with dry, smooth pavement runs straight, bounded by a right-side guardrail, and traffic is moderate with a slight slowup ahead. A white hatchback directly ahead in the ego lane slows because of congestion in front, briefly constraining the ego vehicle's pace. In the adjacent left lane, a small flatbed truck travels just ahead at a similar speed, limiting chances to pass. Farther left, a silver kei van moves forward along the striped gore area and continues alongside, potentially merging into the through lane. Large blue overhead direction signs for Kameari, Umejima, and Kawaguchi are visible, with additional signals in the distance.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, because of traffic congestion ahead. Slow down to maintain a safe following distance as the leading vehicle decelerates."}
{"id": "train_04656", "split": "train", "clip_key": "2020-0226-101332_060822_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "060822"}, "frames": ["2020-0226-101332_060822_movie_t-3.jpg", "2020-0226-101332_060822_movie_t-2.jpg", "2020-0226-101332_060822_movie_t-1.jpg", "2020-0226-101332_060822_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban three-lane same-direction road with smooth pavement carries heavy, slow traffic toward a signalized intersection, and the flow remains queued with only brief creeping. Directly ahead in the ego lane, a silver van is stopped for a red light, holding the ego car behind. In the left adjacent lane, a red taxi and a small white van wait alongside, edging forward but staying in their lane without entering the ego path. In the right adjacent lane, a tall silver van moves slowly ahead on the right, keeping to its lane without merging. Overhead traffic lights show red at the intersection.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop immediately to avoid colliding with the halted van at the red signal."}
{"id": "train_04657", "split": "train", "clip_key": "2020-0207-151349_083804_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "083804"}, "frames": ["2020-0207-151349_083804_movie_t-3.jpg", "2020-0207-151349_083804_movie_t-2.jpg", "2020-0207-151349_083804_movie_t-1.jpg", "2020-0207-151349_083804_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road runs under an elevated expressway, with the columns forming a narrow center divider; the pavement looks damp and traffic is light. A motorcycle emerges from the left side street and sweeps diagonally across ahead, accelerating and potentially entering the ego lane. A small silver van ahead slightly left continues straight in the same direction at moderate speed, occupying the lane ahead. Several vehicles, including a white minivan, are parked in bays along the right curb and remain stationary, narrowing the roadside. Overhead traffic signals hang at the cross street under the structure.", "hazard_reasoning": "No immediate hazards are present; clear weather and smooth pavement minimize risk despite shaded sections under the overpass."}
{"id": "train_04658", "split": "train", "clip_key": "titan_clip_1306_000282_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1306_000282_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1306_000282_movie_t-3_augB1.jpg", "titan_clip_1306_000282_movie_t-2_augB1.jpg", "titan_clip_1306_000282_movie_t-1_augB1.jpg", "titan_clip_1306_000282_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban commercial street with a narrow single-lane roadway and no centerline is visible, the pavement dry and smooth; vehicular flow is light while many pedestrians share the road. A pedestrian carrying a handbag walks in the middle of the road ahead, moving away from the ego car and occupying its path. Several groups of pedestrians farther ahead drift and cross across the lane in both directions, constraining the ego vehicle's pace. A delivery truck stands on the left side ahead with its rear protruding into the lane, and a box lies on the roadway nearby, forming a partial obstruction. Traffic cones and storefront fixtures tighten the right edge.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking on the middle of the road, away from the ego car. The driver should slow down because the pedestrian is walking in the vehicle's path and poses a collision risk."}
{"id": "train_04659", "split": "train", "clip_key": "2020-0220-102630_114766_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "114766"}, "frames": ["2020-0220-102630_114766_movie_t-3.jpg", "2020-0220-102630_114766_movie_t-2.jpg", "2020-0220-102630_114766_movie_t-1.jpg", "2020-0220-102630_114766_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In an urban setting, the ego car proceeds on a two-way road with one lane each way divided by a solid yellow centerline, and the pavement appears smooth with moderate traffic. A black van ahead in the ego lane drives away from the camera at a steady pace, effectively setting the ego vehicle's speed. In the opposing lane to the right, a white sedan approaches and continues straight near the centerline without encroaching. Far right, a silver hatchback edges from a side area toward the opposing lane, preparing to merge with oncoming traffic.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. Maintain a safe following distance because the van ahead could slow or brake suddenly, so you should stay vigilant and ready to react."}
{"id": "train_04660", "split": "train", "clip_key": "titan_clip_1330_000378_movie", "source": {"subset": "titan", "scenario": "clip_1330", "frame": "000378"}, "frames": ["titan_clip_1330_000378_movie_t-3.jpg", "titan_clip_1330_000378_movie_t-2.jpg", "titan_clip_1330_000378_movie_t-1.jpg", "titan_clip_1330_000378_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on left side.", "environment_perception": "An urban market street under an elevated structure has a single narrow shared lane with no divider and interlocking paver pavement in good condition; vehicle traffic is light while pedestrian activity is moderate. On the left side of the road, a pedestrian in a white shirt and blue pants walks away from the car along the edge and may step into the lane. Ahead on the right, a small covered truck is stopped partly in the lane with crates and bins beside it, narrowing the passage for the ego vehicle. Farther ahead, several pedestrians walk along the middle of the roadway and one emerges from a right-side storefront, occupying the path ahead.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and blue pants, and walking away from the ego car, on the left side of the road. The pedestrian could step into the lane unexpectedly, so the driver should stay vigilant and prepared to react."}
{"id": "train_04661", "split": "train", "clip_key": "2020-0127-132751_012129_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "012129"}, "frames": ["2020-0127-132751_012129_movie_t-3.jpg", "2020-0127-132751_012129_movie_t-2.jpg", "2020-0127-132751_012129_movie_t-1.jpg", "2020-0127-132751_012129_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial flanked by high-rise buildings has three same-direction lanes, separated from oncoming traffic by a tree-lined median with a low fence; the pavement looks smooth and the flow is heavy and slow. A black sedan directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle. In the adjacent right lane, a small silver van waits nearly alongside, and farther ahead more cars and a white box truck queue across lanes, keeping movement minimal. A posted 50 sign is visible on the right.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. This indicates vehicles ahead are halted, so the driver should stop to avoid a collision and maintain a safe following distance."}
{"id": "train_04662", "split": "train", "clip_key": "2020-0218-103119_029656_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "029656"}, "frames": ["2020-0218-103119_029656_movie_t-3.jpg", "2020-0218-103119_029656_movie_t-2.jpg", "2020-0218-103119_029656_movie_t-1.jpg", "2020-0218-103119_029656_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban commercial street with one lane in each direction and no median has smooth pavement and light-to-moderate flow, but the ego lane is impeded. A white box truck directly ahead in the ego lane is stopped, blocking the path and holding the ego vehicle. In the opposite lane to the right, a white bus approaches toward the camera and continues past within its lane. On the left sidewalk, several pedestrians walk behind a metal guardrail and remain clear of the roadway. Buildings and shopfronts line both sides, and no salient traffic signals or speed signs are visible.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The driver should stop to avoid a collision with the stationary vehicle ahead, as the truck blocks the forward path and increases collision risk."}
{"id": "train_04663", "split": "train", "clip_key": "titan_clip_989_000462_movie", "source": {"subset": "titan", "scenario": "clip_989", "frame": "000462"}, "frames": ["titan_clip_989_000462_movie_t-3.jpg", "titan_clip_989_000462_movie_t-2.jpg", "titan_clip_989_000462_movie_t-1.jpg", "titan_clip_989_000462_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "be aware of cyclist approaching in left lane", "environment_perception": "A narrow urban two-way street with a single lane each direction and no median runs between shops, the pavement smooth and traffic light to moderate. Ahead along the left edge, a cyclist wearing black pants rides toward the ego vehicle, keeping near the curb but potentially encroaching into the ego lane. On the ego's right, a white scooter approaches in the opposite lane and continues straight past the crosswalk, tightening the space at the center. Farther ahead, a small white van follows the scooter oncoming and slows near the crosswalk, forming a short opposing queue. An overhead traffic signal facing the ego shows green.", "hazard_reasoning": "There is a cyclist wearing black pants, cycling along the left cycling lane, toward the ego car. The cyclist is approaching from the left and may enter the ego-lane unexpectedly, so the driver should be aware."}
{"id": "train_04664", "split": "train", "clip_key": "2020-0220-151845_026030_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "026030"}, "frames": ["2020-0220-151845_026030_movie_t-3.jpg", "2020-0220-151845_026030_movie_t-2.jpg", "2020-0220-151845_026030_movie_t-1.jpg", "2020-0220-151845_026030_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under elevated structures carries three same-direction lanes toward a junction, the pavement is smooth and traffic is moderately heavy ahead. A black van directly ahead of the ego car drifts left in the middle of the intersection to enter the left lane as congestion builds in front of the ego vehicle. A silver van slightly ahead in the right lane proceeds straight at a similar pace without changing lanes. A small white kei truck in the left lane runs slowly near the ego car, reducing the gap into which the black van merges.", "hazard_reasoning": "There is a black van lane changing in the middle of the intersection, to the left lane, because of traffic congestion ahead of the ego-car. You should slow down to allow safe reaction to the van's unexpected lane change."}
{"id": "train_04665", "split": "train", "clip_key": "2020-0220-102630_032971_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "032971"}, "frames": ["2020-0220-102630_032971_movie_t-3.jpg", "2020-0220-102630_032971_movie_t-2.jpg", "2020-0220-102630_032971_movie_t-1.jpg", "2020-0220-102630_032971_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "An urban two-way road approaches a signalized intersection with a zebra crosswalk; the ego vehicle travels in the left lane, there is no physical median, the pavement is clean, and traffic is light. Ahead at the crosswalk, a pedestrian wearing blue pants and carrying a backpack crosses from left to right through the ego path, while another pedestrian in a dark coat crosses from right to left, together momentarily blocking the lane. On the left shoulder beyond the crosswalk, a small blue truck is stopped with a worker beside it, remaining at the curb.", "hazard_reasoning": "There is a pedestrian wearing blue pants, carrying a backpack, and crossing the street, from the left side to the right side, ahead at the crosswalk. The driver needs to yield because the pedestrian is crossing ahead at the crosswalk."}
{"id": "train_04666", "split": "train", "clip_key": "titan_clip_1049_000090_movie", "source": {"subset": "titan", "scenario": "clip_1049", "frame": "000090"}, "frames": ["titan_clip_1049_000090_movie_t-3.jpg", "titan_clip_1049_000090_movie_t-2.jpg", "titan_clip_1049_000090_movie_t-1.jpg", "titan_clip_1049_000090_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with a single narrow undivided roadway has smooth pavement and very light traffic, with no vehicles ahead or oncoming as the road bends slightly left toward an elevated structure. Short bollards separate tiled sidewalks, and a 20 speed marking appears near a zebra crossing in the foreground. On the right, a small group of pedestrians walks away along the storefronts behind the bollards, not entering the lane. Farther ahead on the left sidewalk, another pedestrian walks toward the camera near the curb but stays on the walkway. Bicycles are parked at the right corner by the yellow building just beyond the crosswalk, outside the traveled way.", "hazard_reasoning": "No immediate hazards are present in this scenario; traffic is orderly and visibility is clear, allowing the driver to maintain a safe course."}
{"id": "train_04667", "split": "train", "clip_key": "titan_clip_1381_000036_movie", "source": {"subset": "titan", "scenario": "clip_1381", "frame": "000036"}, "frames": ["titan_clip_1381_000036_movie_t-3.jpg", "titan_clip_1381_000036_movie_t-2.jpg", "titan_clip_1381_000036_movie_t-1.jpg", "titan_clip_1381_000036_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of parked van", "environment_perception": "A dense urban shopping street forms a narrow single-lane road with no divider and mostly smooth pavement, and traffic is light with no moving vehicles visible. A white van is parked on the right side just ahead, projecting into the lane and reducing space. Two pedestrians ahead near the center-right walk away beside the van within the ego lane, constraining the vehicle's pace. A third pedestrian farther ahead near the middle moves left across the roadway. A small metal cart or barrier stands in the center of the lane ahead as an obstacle.", "hazard_reasoning": "There is a white van parked on the right side of the road. The parked van may obstruct your view of pedestrians or traffic emerging from the curb, so proceed with caution to anticipate any sudden movements."}
{"id": "train_04668", "split": "train", "clip_key": "titan_clip_950_000372_movie", "source": {"subset": "titan", "scenario": "clip_950", "frame": "000372"}, "frames": ["titan_clip_950_000372_movie_t-3.jpg", "titan_clip_950_000372_movie_t-2.jpg", "titan_clip_950_000372_movie_t-1.jpg", "titan_clip_950_000372_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban two-way street with one lane in each direction and no median runs between mid-rise buildings; the asphalt is smooth and traffic is light. A small tanker truck travels ahead in the ego lane at a steady pace. On the right, a white work truck is parked at the curb in the oncoming lane with orange cones, narrowing that side of the roadway. On the left sidewalk near the foreground, a pedestrian stands by a building and guardrail, staying off the road. A roadside work area marked by cones lines the right, and a no-parking sign is posted on a pole to the left.", "hazard_reasoning": "There is a white truck parked on the left side of the ego lane, because there is a pedestrian standing outside the vehicle, speaking with the driver. The parked truck and pedestrian reduce available lane space and require the driver to adjust their path to avoid a collision, so careful manoeuvring is necessary."}
{"id": "train_04669", "split": "train", "clip_key": "2020-0210-101957_079403_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "079403"}, "frames": ["2020-0210-101957_079403_movie_t-3.jpg", "2020-0210-101957_079403_movie_t-2.jpg", "2020-0210-101957_079403_movie_t-1.jpg", "2020-0210-101957_079403_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with narrow single lanes and a solid center line runs between close storefronts and utility poles; the asphalt looks smooth and traffic is light as the road curves gently right. A brown truck ahead in the ego lane drives away at a steady pace, occupying our path and effectively setting our speed while we follow through the bend. No oncoming vehicles appear in the opposing lane to the right. A large 40 speed marking and a bicycle sharrow are painted on the pavement. Metal railings line the left curb, and the buildings tight to the corner make the right-hand curve short-sighted.", "hazard_reasoning": "There is a brown truck driving in the ego lane away from the ego car. The truck blocks the view of the upcoming curved road, limiting visibility, so the driver should be aware and prepared to slow or adjust their position."}
{"id": "train_04670", "split": "train", "clip_key": "2020-0220-151845_052015_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "052015"}, "frames": ["2020-0220-151845_052015_movie_t-3.jpg", "2020-0220-151845_052015_movie_t-2.jpg", "2020-0220-151845_052015_movie_t-1.jpg", "2020-0220-151845_052015_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane roadway runs under an elevated structure, with a concrete barrier on the left and a yellow divider to the right; the pavement looks smooth and traffic is heavy, creeping with brief roll-and-stop movement. Directly ahead in the ego lane, a pink flatbed truck carrying a tarp-covered load accelerates slightly, opening a short gap and dictating the ego car's pace. In the adjacent right lane, a light-blue kei van alongside advances slowly, staying parallel without encroaching. Farther ahead to the right, a silver van inches forward with the queue, limiting flow in that lane. A blue direction sign on the left points to Shibuya and Eifukucho with route 20 and 413 markers.", "hazard_reasoning": "There is a pink truck accelerating in front of the ego car. The sudden acceleration may lead to an unpredictable lane change or speed difference, so the driver should start moving to maintain a safe buffer."}
{"id": "train_04671", "split": "train", "clip_key": "2020-0214-145407_036126_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "036126"}, "frames": ["2020-0214-145407_036126_movie_t-3.jpg", "2020-0214-145407_036126_movie_t-2.jpg", "2020-0214-145407_036126_movie_t-1.jpg", "2020-0214-145407_036126_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway has two same-direction lanes divided by a dashed line and smooth pavement, with moderate flow as the road bends slightly right. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. In the adjacent right lane, several cars continue straight at a steady speed beside the ego vehicle. Farther ahead at a side opening on the right, a dark car edges toward the main road, potentially merging into the right lane before the curve. Parked vehicles line the left shoulder outside the travel lane behind a guardrail.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. You need to reduce speed to maintain a safe following distance and avoid a collision."}
{"id": "train_04672", "split": "train", "clip_key": "2020-0207-101955_085037_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "085037"}, "frames": ["2020-0207-101955_085037_movie_t-3.jpg", "2020-0207-101955_085037_movie_t-2.jpg", "2020-0207-101955_085037_movie_t-1.jpg", "2020-0207-101955_085037_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway ramp with a single left-hand lane runs between tall sound walls, separated from opposing traffic by a concrete barrier; the pavement is smooth and traffic is light as the road curves gently right. A small dark pickup directly ahead in the ego lane proceeds steadily, controlling the ego vehicle's pace. Farther ahead in the same lane, a blue truck drives away from the camera, remaining centered and gradually increasing the gap. On the adjacent roadway to the right, a passenger car moves in the opposite direction behind the barrier, posing no interaction.", "hazard_reasoning": "There is a blue truck driving in the ego lane, away from the ego car. The truck may brake unexpectedly or reduce speed suddenly, so the driver should maintain a safe following distance under this situation."}
{"id": "train_04673", "split": "train", "clip_key": "2020-0226-101332_044227_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "044227"}, "frames": ["2020-0226-101332_044227_movie_t-3.jpg", "2020-0226-101332_044227_movie_t-2.jpg", "2020-0226-101332_044227_movie_t-1.jpg", "2020-0226-101332_044227_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial passes under an elevated roadway, with three same-direction lanes, smooth pavement, and moderate traffic that slows toward an intersection. The white van ahead in the ego lane drives away from the ego car while easing toward the queue at the light, effectively setting the pace. A large green dump truck is in the right adjacent lane slightly ahead, traveling parallel toward the stop line and limiting right-side clearance. On the left, a white sedan runs alongside and edges forward with the flow. Overhead signals show red, and green directional signs hang from the structure. No obstacles or work zones are visible.", "hazard_reasoning": "There is a white van driving away from the ego car, in the ego lane. The van is directly ahead in the same lane and may brake unexpectedly, so the driver should maintain a safe following distance by following the vehicle ahead."}
{"id": "train_04674", "split": "train", "clip_key": "2020-0204-150838_009980_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "009980"}, "frames": ["2020-0204-150838_009980_movie_t-3.jpg", "2020-0204-150838_009980_movie_t-2.jpg", "2020-0204-150838_009980_movie_t-1.jpg", "2020-0204-150838_009980_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with two lanes in the ego direction and oncoming lanes to the right runs past a sidewalk on the left; the pavement is smooth and dry, and traffic is heavy, bunching near an upcoming junction. Ahead in the ego lane, a black sedan slows with brake lights because of congestion, constraining the ego vehicle's pace. To the right, a silver van in the adjacent same-direction lane creeps forward alongside, limiting chances to merge. Farther ahead, multiple cars and vans queue across both lanes, some stopping as the line compresses. A 40 speed limit sign is visible on the left.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision in the congested traffic."}
{"id": "train_04675", "split": "train", "clip_key": "titan_clip_594_000108_movie", "source": {"subset": "titan", "scenario": "clip_594", "frame": "000108"}, "frames": ["titan_clip_594_000108_movie_t-3.jpg", "titan_clip_594_000108_movie_t-2.jpg", "titan_clip_594_000108_movie_t-1.jpg", "titan_clip_594_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single travel lane and no median runs between dense storefronts; the pavement looks smooth and traffic is light with no nearby vehicles. Ahead on the left, two pedestrians in black and blue tops carrying handbags walk away along the lane edge, partly occupying the ego lane and constraining its pace. Farther ahead on the right, another pedestrian stands near the curb by building entrances, moving cautiously and potentially stepping into the lane. Parked delivery bicycles and scooters line the left edge while protruding facades on the right further narrow the passage.", "hazard_reasoning": "There are two pedestrians wearing a black and a blue t-shirt, carrying handbags, walking on the left side of the road, away from the ego car. The driver should slow down because these pedestrians could change direction or step into the vehicle's path unexpectedly."}
{"id": "train_04676", "split": "train", "clip_key": "titan_clip_353_000318_movie", "source": {"subset": "titan", "scenario": "clip_353", "frame": "000318"}, "frames": ["titan_clip_353_000318_movie_t-3.jpg", "titan_clip_353_000318_movie_t-2.jpg", "titan_clip_353_000318_movie_t-1.jpg", "titan_clip_353_000318_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of pedestrian", "environment_perception": "A narrow urban side street with brick paving runs between buildings, functioning as a two-way road without a centerline and carrying light, slow traffic on a smooth surface. A pedestrian wearing black pants comes from the right sidewalk and walks toward the intersection ahead, crossing into the roadway and may enter the ego lane. Another pedestrian on the left by a parking area moves along the curb past a parked white coupe, remaining off the lane. Far ahead in the same direction, a small white car proceeds away along the street, loosely setting the pace. A convex safety mirror at a left driveway and a no-parking sign on the right are visible, with bicycles parked along the right.", "hazard_reasoning": "There is a pedestrian wearing black pants walking from the right side towards the intersection. The pedestrian may step into the vehicle's path unexpectedly, so the driver should be aware of the pedestrian's movement."}
{"id": "train_04677", "split": "train", "clip_key": "2020-0129-144857_081946_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "081946"}, "frames": ["2020-0129-144857_081946_movie_t-3.jpg", "2020-0129-144857_081946_movie_t-2.jpg", "2020-0129-144857_081946_movie_t-1.jpg", "2020-0129-144857_081946_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with dry, well?arked pavement runs under clear skies, divided from oncoming lanes by a guardrail median; traffic in the ego direction is heavy and queued at an intersection. A white sedan directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the lane to the left, a red bus and a flatbed truck wait side by side in the same direction, moving only slightly as the queue compresses. Farther ahead, several trucks and cars remain lined up near the junction, constraining overall pace. An overhead signal above the roadway shows solid red for the through lanes, while a chevron-separated right-turn lane begins on the ego vehicle's right.", "hazard_reasoning": "There is a white Sedan stopped in the ego lane, because of the red traffic light, in front of the ego car. Stopping prevents a collision with the sedan halted at the red light."}
{"id": "train_04678", "split": "train", "clip_key": "titan_clip_1253_000522_movie", "source": {"subset": "titan", "scenario": "clip_1253", "frame": "000522"}, "frames": ["titan_clip_1253_000522_movie_t-3.jpg", "titan_clip_1253_000522_movie_t-2.jpg", "titan_clip_1253_000522_movie_t-1.jpg", "titan_clip_1253_000522_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban backstreet with a single shared lane and worn asphalt carries light motor traffic but heavy pedestrian presence, so movement is slow. On the right, a pedestrian in a white shirt and pink pants with a backpack walks toward the ego along the edge pedestrian lane and may edge into the travel space. Ahead in the center of the lane, a cyclist moves away at low speed, constraining the ego's pace. Farther ahead, a small box truck in the same direction slows near the block entrance, further limiting the path. A delivery truck is parked at the left curb, kegs and shop equipment sit near the gutter, a crowd queues on the left sidewalk, and a worker crouches by a storefront, narrowing the corridor.", "hazard_reasoning": "There is a female pedestrian, wearing a white shirt, pink pants and a backpack, walking towards the ego-car, on the right hand side of the road, in a pedestrian lane. The pedestrian is approaching the vehicle's path on the right side, requiring you to manoeuvre carefully to avoid a collision."}
{"id": "train_04679", "split": "train", "clip_key": "titan_clip_886_000126_movie", "source": {"subset": "titan", "scenario": "clip_886", "frame": "000126"}, "frames": ["titan_clip_886_000126_movie_t-3.jpg", "titan_clip_886_000126_movie_t-2.jpg", "titan_clip_886_000126_movie_t-1.jpg", "titan_clip_886_000126_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian", "environment_perception": "An urban side street lined with tall buildings meets a cross street at an unsignalized intersection; the pavement looks smooth and traffic is light with no moving vehicles. Ahead in the ego lane on the left side, a pedestrian carrying an umbrella walks away from the car along the roadway. From the right, another pedestrian crosses leftward in front of the ego path through the intersection, briefly governing the approach. On the left sidewalk at the corner, a person stands at the curb facing the roadway. A Japanese stop sign is mounted on the left corner by the intersecting street.", "hazard_reasoning": "There is a pedestrian carrying an umbrella, walking on the left side of the road, away from the ego car. The pedestrian may step into the vehicle's path unpredictably, so the driver should yield to ensure their safety."}
{"id": "train_04680", "split": "train", "clip_key": "2020-0227-153144_034241_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "034241"}, "frames": ["2020-0227-153144_034241_movie_t-3.jpg", "2020-0227-153144_034241_movie_t-2.jpg", "2020-0227-153144_034241_movie_t-1.jpg", "2020-0227-153144_034241_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A busy urban artery with multiple same-direction lanes and no physical median shows dry pavement and heavy stop-and-go flow between tall buildings. Directly ahead in the ego lane, a white minivan is stopped because of traffic congestion and blocks the path. In the lane to the left, a black minivan slightly ahead crawls forward alongside, limiting space for a leftward merge. On the right, a white van pulls up close in the adjacent lane and inches ahead, hemming in the ego vehicle's right side. A roadside no right-turn sign is visible on a pole to the right.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car in the ego lane, because of traffic congestion. The minivan's sudden stop in heavy traffic increases rear-end collision risk, so the driver should stop to maintain a safe distance."}
{"id": "train_04681", "split": "train", "clip_key": "2020-0228-102841_012032_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "012032"}, "frames": ["2020-0228-102841_012032_movie_t-3.jpg", "2020-0228-102841_012032_movie_t-2.jpg", "2020-0228-102841_012032_movie_t-1.jpg", "2020-0228-102841_012032_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction and no median runs between tall buildings; the pavement is dry and traffic is heavy with a short queue ahead. A black sedan directly ahead in the ego lane is stopped because of congestion, blocking the lane and holding the ego vehicle. Along the left edge of the ego lane, two delivery trucks are stopped for unloading and a worker stands near the rear, their positions encroaching into the lane and further constricting the path. In the oncoming lane to the right, a bus approaches slowly alongside the queue, maintaining opposing flow through the narrowed section.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary sedan due to the congestion."}
{"id": "train_04682", "split": "train", "clip_key": "titan_clip_309_000090_movie", "source": {"subset": "titan", "scenario": "clip_309", "frame": "000090"}, "frames": ["titan_clip_309_000090_movie_t-3.jpg", "titan_clip_309_000090_movie_t-2.jpg", "titan_clip_309_000090_movie_t-1.jpg", "titan_clip_309_000090_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked bicycle", "environment_perception": "A dense urban shopping street, two-way with one narrow lane in each direction and no median, has smooth pavement and light, slow traffic. A dark car ahead in the ego lane moves steadily and sets the pace. Two pedestrians farther ahead near the centerline cross from right to left and may enter the ego lane. An oncoming car advances in the right lane in the distance. A black bicycle is parked on the left side of the road by the curb, while other pedestrians remain on the sidewalks.", "hazard_reasoning": "There is a black bicycle parked on the left side of the road. The parked bicycle reduces the available lane width, so the driver should carefully manoeuvre to avoid collision."}
{"id": "train_04683", "split": "train", "clip_key": "2020-0213-143552_076886_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "076886"}, "frames": ["2020-0213-143552_076886_movie_t-3.jpg", "2020-0213-143552_076886_movie_t-2.jpg", "2020-0213-143552_076886_movie_t-1.jpg", "2020-0213-143552_076886_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided roadway runs between tall sound-barrier walls, with the ego car in a single narrowed lane bordered by concrete barriers and orange delineator posts; the pavement appears worn and traffic is light. A blue heavy truck is directly ahead in the ego lane and slows, constraining the ego vehicle's pace. Farther ahead to the right, a white truck proceeds along the adjacent separated lane and continues away without affecting the ego path. The roadway curves gently right with tapering lanes and minimal shoulder, and there are no signals or signs clearly visible.", "hazard_reasoning": "There is a blue truck slowing in front of the ego car in the ego lane. The blue truck's reduced speed could require the driver to slow down to maintain a safe distance under this situation."}
{"id": "train_04684", "split": "train", "clip_key": "2020-0131-135401_006625_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "006625"}, "frames": ["2020-0131-135401_006625_movie_t-3.jpg", "2020-0131-135401_006625_movie_t-2.jpg", "2020-0131-135401_006625_movie_t-1.jpg", "2020-0131-135401_006625_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "A narrow urban street with a single left-hand lane and no median appears dry and smooth, with strong sun glare at the right edge; traffic is effectively halted. A white box truck directly ahead in the ego lane is stopped, blocking the path and constraining movement. Several white vans are parked along the left curb and in a small side alley, narrowing the lane but remaining stationary. A metal fence and painted shoulder line the right side, and no salient traffic signals or speed signs are visible.", "hazard_reasoning": "There is a white truck that has stopped in front of the ego car in the ego lane. The truck is fully stopped in your lane, requiring you to stop immediately to avoid a rear-end collision."}
{"id": "train_04685", "split": "train", "clip_key": "titan_clip_138_000342_movie", "source": {"subset": "titan", "scenario": "clip_138", "frame": "000342"}, "frames": ["titan_clip_138_000342_movie_t-3.jpg", "titan_clip_138_000342_movie_t-2.jpg", "titan_clip_138_000342_movie_t-1.jpg", "titan_clip_138_000342_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked sedan.", "environment_perception": "An urban street with a single forward lane runs between a planted median on the left and buildings on the right; the pavement is smooth and traffic is light throughout. A black sedan is parked on the left side by the median, remaining stationary and narrowing the usable lane. A white box truck is stopped at the right curb ahead with a person standing near its rear, potentially influencing passing room. A dark car travels ahead in the lane and moves slowly away, effectively setting the pace. Pedestrians walk along the right sidewalk near the truck but stay clear of the roadway, while bright sun ahead causes noticeable glare.", "hazard_reasoning": "There is a black sedan parked on the left side of the road. This parked sedan narrows the driving lane and may obstruct sightlines, so the driver should carefully manoeuvre around it."}
{"id": "train_04686", "split": "train", "clip_key": "2020-0220-102630_093186_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "093186"}, "frames": ["2020-0220-102630_093186_movie_t-3.jpg", "2020-0220-102630_093186_movie_t-2.jpg", "2020-0220-102630_093186_movie_t-1.jpg", "2020-0220-102630_093186_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two lanes per direction and a metal median fence runs straight on dry pavement, and traffic moves slowly toward a signalized intersection ahead; the ego car travels in the left lane. A yellow compact hatchback is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle. In the adjacent right same-direction lane, a white truck slightly ahead creeps forward with the queue. A distant traffic signal spans the roadway and governs the slow approach.", "hazard_reasoning": "There is a yellow compact hatchback stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid a rear-end collision with the halted vehicle ahead."}
{"id": "train_04687", "split": "train", "clip_key": "titan_clip_16_000228_movie", "source": {"subset": "titan", "scenario": "clip_16", "frame": "000228"}, "frames": ["titan_clip_16_000228_movie_t-3.jpg", "titan_clip_16_000228_movie_t-2.jpg", "titan_clip_16_000228_movie_t-1.jpg", "titan_clip_16_000228_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with smooth pavement and no visible median runs past dense storefronts, some under heavy scaffolding on the left; traffic appears light. A yellow taxi is very close to the camera at the left side of the roadway, moving quickly ahead along the same direction and passing across the ego vehicle's view to take the space in front. No other moving vehicles or pedestrians are evident nearby. Construction scaffolding and posts line the left sidewalk but do not extend into the lane.", "hazard_reasoning": "No hazards detected in the scene; normal driving conditions persist and no immediate warning is required."}
{"id": "train_04688", "split": "train", "clip_key": "titan_clip_266_000786_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_266_000786_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_266_000786_movie_t-3_augB1.jpg", "titan_clip_266_000786_movie_t-2_augB1.jpg", "titan_clip_266_000786_movie_t-1_augB1.jpg", "titan_clip_266_000786_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single undivided lane and smooth pavement appears quiet with light traffic. A pedestrian in the middle of the road ahead, carrying a backpack and wearing black pants, is crossing rightward toward the curb, directly in the ego vehicle's path. A silver van is stopped on the right edge, protruding slightly into the roadway and narrowing the available space near where the pedestrian is heading. A few traffic cones line the left sidewalk, and no other moving vehicles are nearby.", "hazard_reasoning": "There is a pedestrian in the middle of the road, carrying a backpack and wearing black pants, crossing to the right hand side of the road. The pedestrian is crossing ahead, requiring the driver to reduce speed to ensure safety."}
{"id": "train_04689", "split": "train", "clip_key": "2020-0206-101736_040723_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "040723"}, "frames": ["2020-0206-101736_040723_movie_t-3.jpg", "2020-0206-101736_040723_movie_t-2.jpg", "2020-0206-101736_040723_movie_t-1.jpg", "2020-0206-101736_040723_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane street lined with mid-rise buildings has no median and dry pavement, and traffic is heavy and slow in a queue. A white sedan directly ahead in the ego lane is stopped because congestion builds further up, holding the ego vehicle. A compact van ahead-left in the adjacent same-direction lane inches forward alongside the queue at low speed. On the far right, oncoming vans and trucks roll past slowly in their lane, separated only by painted lines.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the stopped sedan."}
{"id": "train_04690", "split": "train", "clip_key": "titan_clip_323_000102_movie", "source": {"subset": "titan", "scenario": "clip_323", "frame": "000102"}, "frames": ["titan_clip_323_000102_movie_t-3.jpg", "titan_clip_323_000102_movie_t-2.jpg", "titan_clip_323_000102_movie_t-1.jpg", "titan_clip_323_000102_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrians walking ahead", "environment_perception": "An urban narrow two-way street with interlocking pavers and brick sidewalks runs between tall buildings; there is no centerline or median and the surface is dry, with light, slow traffic. Ahead in the center, an oncoming black minivan rolls toward the camera, reducing the available space. Farther along, another oncoming light-colored car approaches but remains distant. On the right-side sidewalk, two pedestrians wearing black shirts walk toward the vehicle, staying near the curb alongside its path. At a parking lot entrance on the left, a white car waits facing the roadway, positioned to enter the lane.", "hazard_reasoning": "There are two pedestrians wearing black shirts and walking towards the ego car, on the right side of the road. The pedestrians are approaching the vehicle's path and may step into the road, so the driver should be aware to avoid a collision."}
{"id": "train_04691", "split": "train", "clip_key": "titan_clip_682_000246_movie", "source": {"subset": "titan", "scenario": "clip_682", "frame": "000246"}, "frames": ["titan_clip_682_000246_movie_t-3.jpg", "titan_clip_682_000246_movie_t-2.jpg", "titan_clip_682_000246_movie_t-1.jpg", "titan_clip_682_000246_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "A narrow urban street with a single lane and no median runs between shops; the pavement looks smooth and traffic is light, though the lane is partly obstructed. On the left near the ego vehicle, a large blue truck is stopped with its door open and a worker on the step, occupying part of the lane and constraining the pace. Also on the left, a man in a blue uniform and helmet stands and guides traffic around the loading activity. Along the right storefronts, several pedestrians and staff walk or wait close to the curb, one handling a wheeled cage of boxes that juts toward the roadway.", "hazard_reasoning": "There is a man wearing a blue uniform, wearing a helmet, standing on the left side of the road, because he is guiding traffic. The driver should stop because the worker is actively directing traffic and may signal vehicles to halt to allow pedestrians and cyclists to cross safely."}
{"id": "train_04692", "split": "train", "clip_key": "2020-0204-150838_074388_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "074388"}, "frames": ["2020-0204-150838_074388_movie_t-3.jpg", "2020-0204-150838_074388_movie_t-2.jpg", "2020-0204-150838_074388_movie_t-1.jpg", "2020-0204-150838_074388_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway with two same-direction lanes runs between a tall sound wall on the left and a concrete barrier over a parallel roadway on the right; the pavement is smooth and traffic is light as the road bends slightly left. A large tarp-covered truck is ahead in the ego lane, cruising steadily and effectively setting the ego vehicle's pace. Farther ahead in the adjacent left lane, a small white box truck continues in the same direction without drifting toward the ego lane. No notable signs or hazards appear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04693", "split": "train", "clip_key": "titan_clip_277_000078_movie", "source": {"subset": "titan", "scenario": "clip_277", "frame": "000078"}, "frames": ["titan_clip_277_000078_movie_t-3.jpg", "titan_clip_277_000078_movie_t-2.jpg", "titan_clip_277_000078_movie_t-1.jpg", "titan_clip_277_000078_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban street scene shows a narrow unmarked two-way road with smooth pavement and light traffic, the left curb reduced by a barricaded construction zone. Ahead to the right, a cyclist rides in the same direction along the curb at a steady pace, constraining passing space. On the left by the cones, a pedestrian wearing a gray shirt and blue pants holds an orange baton and stands as a construction marshal for the work area. Farther ahead on the right, another cyclist moves slowly near the storefronts while keeping to the curb. Large construction trucks are parked within the left-side work zone, and several bicycles are parked on the right sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, blue pants, and carrying an orange baton, standing at the left side of the road, because of construction work on the left. The driver should manoeuvre carefully around the pedestrian to avoid a collision in the construction area."}
{"id": "train_04694", "split": "train", "clip_key": "titan_clip_612_000018_movie", "source": {"subset": "titan", "scenario": "clip_612", "frame": "000018"}, "frames": ["titan_clip_612_000018_movie_t-3.jpg", "titan_clip_612_000018_movie_t-2.jpg", "titan_clip_612_000018_movie_t-1.jpg", "titan_clip_612_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on left sidewalk", "environment_perception": "A narrow urban shopping street with a single lane and no divider extends ahead, the brick pavement in good condition and traffic very light with no vehicles visible. On the left foreground, a pedestrian in a black T-shirt with a backpack and an umbrella walks away from the ego car along the edge of the lane, close to the ego path. Farther ahead, several pedestrians move along the roadway, some heading toward the camera and others away, generally keeping to the sides and leaving the center clear. Parked bicycles and shop displays line both sides, slightly narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, carrying a backpack, and carrying an umbrella, walking on the left side of the road, away from the ego car. The driver should be aware of this pedestrian since they may unexpectedly step into the roadway."}
{"id": "train_04695", "split": "train", "clip_key": "2020-0204-150838_082977_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "082977"}, "frames": ["2020-0204-150838_082977_movie_t-3.jpg", "2020-0204-150838_082977_movie_t-2.jpg", "2020-0204-150838_082977_movie_t-1.jpg", "2020-0204-150838_082977_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes runs between guardrails, the asphalt in good condition and traffic building into slow-moving congestion ahead. A gray hatchback directly ahead in the ego lane slows because of the queue and sets the ego vehicle's pace. In the adjacent left lane, a black van slightly ahead travels at a similar speed, limiting an immediate lane change. Farther ahead, a long line of cars fills both lanes and creeps forward. Concrete blocks edge the right shoulder beside a sound barrier, while an elevated structure borders the left.", "hazard_reasoning": "There is a gray hatchback slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. To avoid rear-ending the slower vehicle, the driver should slow down promptly in response to the congestion."}
{"id": "train_04696", "split": "train", "clip_key": "2020-0220-102630_046686_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "046686"}, "frames": ["2020-0220-102630_046686_movie_t-3.jpg", "2020-0220-102630_046686_movie_t-2.jpg", "2020-0220-102630_046686_movie_t-1.jpg", "2020-0220-102630_046686_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs beside an elevated structure and guardrail; the pavement is dry and in good condition, and traffic is moderate and steady. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. A black van slightly ahead in the lane to the left continues straight at a similar speed and edges past the truck, limiting an immediate merge. Farther left at the curb, a work truck is stopped off the travel lanes. No salient traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The ego vehicle needs to slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_04697", "split": "train", "clip_key": "titan_clip_459_000294_movie", "source": {"subset": "titan", "scenario": "clip_459", "frame": "000294"}, "frames": ["titan_clip_459_000294_movie_t-3.jpg", "titan_clip_459_000294_movie_t-2.jpg", "titan_clip_459_000294_movie_t-1.jpg", "titan_clip_459_000294_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van.", "environment_perception": "A narrow urban street with a single lane and no median runs past shops and offices; the pavement looks smooth and traffic is light. A silver van is parked on the left side of the road close to the ego vehicle, leaving tight clearance along the lane. A dark hatchback ahead in the same direction moves steadily away in the center of the lane, setting the pace. Several pedestrians on the right sidewalk walk by storefronts, one standing near the curb by an entrance while remaining off the roadway. Cones and barriers line the left edge, marking a roadside work area.", "hazard_reasoning": "There is a silver van parked on the left side of the road. The silver van reduces available road width, requiring the driver to manoeuvre carefully around it to maintain safe clearance."}
{"id": "train_04698", "split": "train", "clip_key": "2020-0129-105040_043328_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "043328"}, "frames": ["2020-0129-105040_043328_movie_t-3.jpg", "2020-0129-105040_043328_movie_t-2.jpg", "2020-0129-105040_043328_movie_t-1.jpg", "2020-0129-105040_043328_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs beneath an elevated expressway, with a guardrail on the right separating a parallel roadway; the asphalt is dry and traffic is heavy and queued at an intersection. A gray van directly ahead in the ego lane is stopped as the overhead signal shows red, holding the ego car. To the left, a large truck and several vans sit stationary in the adjacent lane, matching the queue and leaving little space for lane changes. On the separated side road to the right, light traffic moves independently and does not interact with the ego lane.", "hazard_reasoning": "There is a gray van stopped in front of the ego-car, because of a red traffic light ahead. Stop to avoid a collision with the halted van at the red light."}
{"id": "train_04699", "split": "train", "clip_key": "2020-0204-150838_078626_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "078626"}, "frames": ["2020-0204-150838_078626_movie_t-3.jpg", "2020-0204-150838_078626_movie_t-2.jpg", "2020-0204-150838_078626_movie_t-1.jpg", "2020-0204-150838_078626_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane roadway under an elevated structure has smooth asphalt and heavy, slow-moving same-direction traffic with no physical median visible. Vehicles remain tightly packed throughout. A white box truck directly ahead in the ego lane begins to accelerate and pull away, effectively setting the ego vehicle's pace. Slightly ahead to the left, a silver tanker truck creeps forward in the adjacent lane, limiting any option to move left. To the right, a dark flatbed truck runs parallel just ahead in its lane at low speed, keeping right-side clearance tight.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04700", "split": "train", "clip_key": "2020-0207-101955_006165_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "006165"}, "frames": ["2020-0207-101955_006165_movie_t-3.jpg", "2020-0207-101955_006165_movie_t-2.jpg", "2020-0207-101955_006165_movie_t-1.jpg", "2020-0207-101955_006165_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in each direction runs between midrise buildings, separated by a hedge median; the pavement is clean and traffic flows steadily at moderate density, with oncoming traffic across the median to the right. Ahead in the ego lane, a green box truck continues straight and slowly pulls away as a distant signal shows green. In the lane to the left, a white minivan travels parallel slightly ahead without merging. Farther ahead in the left lane, a dark sedan proceeds at similar speed, leaving a gap to the truck. Overhead blue guide signs indicate Ikebukuro 4 km and Oji 8 km straight.", "hazard_reasoning": "There is a green truck driving in the ego lane, away from the ego car, because of the green traffic lights. You should follow the vehicle ahead to maintain safe distance and proceed smoothly under the current green signal."}
{"id": "train_04701", "split": "train", "clip_key": "2020-0129-144857_063391_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "063391"}, "frames": ["2020-0129-144857_063391_movie_t-3.jpg", "2020-0129-144857_063391_movie_t-2.jpg", "2020-0129-144857_063391_movie_t-1.jpg", "2020-0129-144857_063391_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated expressway with multiple same-direction lanes shows dry pavement, a low concrete divider on the right, and heavy, slow-moving traffic. A white car directly ahead in the ego lane slows behind a tall box truck in a queue, consistent with congestion ahead. A large city bus runs alongside in the left lane at a similar pace, limiting space to merge left. On the parallel lane beyond the right divider, a small white van and a dark minivan advance past the ego vehicle to the right without crossing into the ego lane.", "hazard_reasoning": "There is a white SUV slowing down in front of the ego car, because of traffic congestion ahead. The driver should slow down to adjust to reduced speed ahead and prevent a rear-end collision."}
{"id": "train_04702", "split": "train", "clip_key": "2020-0131-135401_063070_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "063070"}, "frames": ["2020-0131-135401_063070_movie_t-3.jpg", "2020-0131-135401_063070_movie_t-2.jpg", "2020-0131-135401_063070_movie_t-1.jpg", "2020-0131-135401_063070_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with multiple lanes and no physical median is shown, the pavement is smooth and traffic is moderate and flowing steadily. A white van ahead in the ego lane continues straight at a steady speed through the green signal, setting the ego vehicle's pace. A large dump truck slightly ahead in the adjacent right lane travels in the same direction, running parallel and occupying the lane beside the ego car. Opposing vehicles move along the far-side lanes without drifting over the center markings, while pedestrians walk on the left sidewalk near the intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04703", "split": "train", "clip_key": "2020-0129-105040_047119_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "047119"}, "frames": ["2020-0129-105040_047119_movie_t-3.jpg", "2020-0129-105040_047119_movie_t-2.jpg", "2020-0129-105040_047119_movie_t-1.jpg", "2020-0129-105040_047119_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated structure with central pillars, providing two same-direction lanes on dry, smooth pavement and light, steady traffic; a guardrail beside the pillars separates the opposite carriageway from view. A small white van travels ahead in the ego lane at a steady pace, setting the following distance. Farther ahead, a white box truck in the adjacent right lane proceeds slowly and may influence merging or overtaking. Several vans are stopped along the left curb near buildings, occupying the shoulder but staying outside the travel lane. The pillars and railings form a constrained right edge and intermittent shadows without obscuring the road ahead.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04704", "split": "train", "clip_key": "2020-0131-103016_083046_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "083046"}, "frames": ["2020-0131-103016_083046_movie_t-3.jpg", "2020-0131-103016_083046_movie_t-2.jpg", "2020-0131-103016_083046_movie_t-1.jpg", "2020-0131-103016_083046_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and smooth pavement is backed up near an intersection, so traffic is heavy and mostly stopped. A white minivan directly ahead in the ego lane remains stopped because congestion builds in front, constraining our pace. In the adjacent right lane a dark van slightly ahead is stopped with its driver's door open, presenting a close-side obstacle in the queue. A larger white van to our right is halted beside us and may pull ahead or merge when movement resumes.", "hazard_reasoning": "There is a white minivan stopped in the ego lane because of traffic congestion ahead. Stop to prevent a collision with the halted vehicle."}
{"id": "train_04705", "split": "train", "clip_key": "2020-0220-151845_023207_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "023207"}, "frames": ["2020-0220-151845_023207_movie_t-3.jpg", "2020-0220-151845_023207_movie_t-2.jpg", "2020-0220-151845_023207_movie_t-1.jpg", "2020-0220-151845_023207_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial under an elevated structure has three same-direction lanes, dry intact pavement, and heavy stop-and-go flow. A black van is stopped directly ahead in the ego lane, blocking the path and holding the ego car. To the left, a silver minivan slightly ahead crawls alongside in the adjacent lane, closing the gap and preventing a left merge. To the right, a red wagon a short distance ahead slows with the queue, and a small gray car comes up the far-right lane, so passing on the right is limited.", "hazard_reasoning": "There is a black van stopped in the ego lane, in front of the ego car. The driver must stop to avoid colliding with the stationary van ahead."}
{"id": "train_04706", "split": "train", "clip_key": "titan_clip_665_000210_movie", "source": {"subset": "titan", "scenario": "clip_665", "frame": "000210"}, "frames": ["titan_clip_665_000210_movie_t-3.jpg", "titan_clip_665_000210_movie_t-2.jpg", "titan_clip_665_000210_movie_t-1.jpg", "titan_clip_665_000210_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street with one lane each direction and no median runs between storefronts, the ego-vehicle traveling in the left lane on smooth pavement; traffic is light with no cars immediately ahead or oncoming. Ahead near the center of the roadway, a pedestrian wearing a white shirt and black skirt crosses in the middle of the road toward the left side, moving through the ego lane and briefly occupying its path. On the right edge, a person with a backpack walks along the curb toward the camera, close to the carriageway but keeping out of the lane. A-frame shop signs line the sidewalks.", "hazard_reasoning": "A pedestrian wearing a white shirt and black skirt is crossing in the middle of the road to the left side. The pedestrian's path intersects with the vehicle's lane and may be difficult to see until close, so you should slow down to avoid a collision."}
{"id": "train_04707", "split": "train", "clip_key": "2020-0226-101332_058201_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "058201"}, "frames": ["2020-0226-101332_058201_movie_t-3.jpg", "2020-0226-101332_058201_movie_t-2.jpg", "2020-0226-101332_058201_movie_t-1.jpg", "2020-0226-101332_058201_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to the turning hatchback.", "environment_perception": "An urban, multi-lane signalized intersection with painted channelization and smooth pavement is ahead, and traffic is moderate. A white box truck is directly ahead in the center of the junction, moving toward the ego approach along the hatched median area and slowing, which could constrain the ego's progress. A white hatchback in the middle of the intersection to the right turns across in front of the ego-car and heads toward the right side, briefly occupying the ego's intended path. On the far right, a small queue of cars and vans on the cross street moves through the intersection, limiting gaps for turning traffic. Overhead blue lane-use signs show straight and right-turn permissions, and the traffic signal facing this approach displays green.", "hazard_reasoning": "There is a white hatchback turning in the middle of the intersection, to the right side, in front of the ego-car. The hatchback's unexpected turn across the lane may encroach on the ego-vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_04708", "split": "train", "clip_key": "2020-0131-135401_006708_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "006708"}, "frames": ["2020-0131-135401_006708_movie_t-3.jpg", "2020-0131-135401_006708_movie_t-2.jpg", "2020-0131-135401_006708_movie_t-1.jpg", "2020-0131-135401_006708_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single narrow lane in each direction and no median runs past low-rise buildings; pavement looks intact and strong sunlight from the right produces glare. Traffic is light. A white box truck is immediately ahead in the ego lane and remains stopped, blocking the ego vehicle's path. Several white mini-vans are parked along the left curb near and farther ahead, close to the lane and slightly constricting space. No traffic signals or speed limit signs are clearly visible.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The driver should stop to avoid collision with the stationary vehicle ahead."}
{"id": "train_04709", "split": "train", "clip_key": "titan_clip_739_000180_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_739_000180_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_739_000180_movie_t-3_augB1.jpg", "titan_clip_739_000180_movie_t-2_augB1.jpg", "titan_clip_739_000180_movie_t-1_augB1.jpg", "titan_clip_739_000180_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with no center line and smooth pavement is shown, and traffic is light with no moving vehicles visible in either direction. On the left edge near the ego path, a pedestrian in a white T-shirt carrying a handbag walks toward the ego vehicle because a large truck is parked along the curb, and the person may step further into the lane. Farther ahead, a small group of pedestrians moves along the roadway near the center, reducing the available space. A box truck stands parked on the left partially blocking the lane, and a parking-garage entrance with bicycles beside it opens on the right.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, carrying a handbag, and walking on the left side of the road, towards the ego car, because of the parked truck. The pedestrian may step into the vehicle's path as the truck blocks the sidewalk, so the driver should carefully manoeuvre around them."}
{"id": "train_04710", "split": "train", "clip_key": "2020-0226-140503_103879_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "103879"}, "frames": ["2020-0226-140503_103879_movie_t-3.jpg", "2020-0226-140503_103879_movie_t-2.jpg", "2020-0226-140503_103879_movie_t-1.jpg", "2020-0226-140503_103879_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "A narrow urban street with a single left-hand lane in the ego direction is bordered by metal railings and storefronts, with smooth asphalt and light traffic. A gray box truck directly ahead in the ego lane is stopped, holding the ego vehicle's pace and blocking the path. No other same-direction vehicles are close, and the opposite lane looks clear in the visible segment. No salient signals or speed signs are visible, and no pedestrians or cyclists are near the roadway.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car. The stopped truck blocks the lane and limits forward visibility, so the driver should stop immediately to avoid a collision."}
{"id": "train_04711", "split": "train", "clip_key": "titan_clip_333_000600_movie", "source": {"subset": "titan", "scenario": "clip_333", "frame": "000600"}, "frames": ["titan_clip_333_000600_movie_t-3.jpg", "titan_clip_333_000600_movie_t-2.jpg", "titan_clip_333_000600_movie_t-1.jpg", "titan_clip_333_000600_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to crossing pedestrian", "environment_perception": "A narrow urban commercial street with a single lane each way and no median stretches ahead; the pavement mixes asphalt and cobblestone and looks well kept, and vehicle traffic is light. Ahead at the crosswalk, a pedestrian in a red dress comes from the left and walks across the ego lane, directly occupying the path. On the left sidewalk by the cafe, several pedestrians walk and wait near the curb by the crosswalk, close to the roadway but remaining on the sidewalk. Far ahead along the street, a small white car proceeds with ample spacing and no effect on the ego vehicle. Bollards line both curbs and no traffic signals are visible at the crossing.", "hazard_reasoning": "There is a pedestrian wearing a red dress and crossing the street, from the left side, ahead at the crosswalk. The driver must yield because the pedestrian is already in the crosswalk and has right-of-way."}
{"id": "train_04712", "split": "train", "clip_key": "2020-0205-152530_046805_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "046805"}, "frames": ["2020-0205-152530_046805_movie_t-3.jpg", "2020-0205-152530_046805_movie_t-2.jpg", "2020-0205-152530_046805_movie_t-1.jpg", "2020-0205-152530_046805_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban boulevard with three lanes in each direction is divided by a low hedged median, and the smooth pavement is dry. Traffic is moderate as vehicles approach a signalized intersection, where the overhead light ahead shows red. A white truck ahead in the ego lane slows for the red light and constrains the ego vehicle's pace. In the adjacent right lane, a dark car continues straight and gradually pulls ahead, while across the median on the right an oncoming bus proceeds the opposite way and remains separated.", "hazard_reasoning": "There is a white truck slowing down in the ego lane because of a red traffic light. You should slow down to maintain a safe distance and prevent a rear-end collision as the truck stops for the signal."}
{"id": "train_04713", "split": "train", "clip_key": "2020-0210-155354_000130_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-155354_000130_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-155354_000130_movie_t-3_augB1.jpg", "2020-0210-155354_000130_movie_t-2_augB1.jpg", "2020-0210-155354_000130_movie_t-1_augB1.jpg", "2020-0210-155354_000130_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban commercial street with one narrow lane each way shows smooth pavement and moderate, slow-moving traffic separated only by painted lines. A white SUV immediately ahead in the ego lane creeps forward and brakes, constraining the ego car's pace. A pedestrian in a black jacket is in the roadway ahead near the SUV, walking across the ego lane and potentially entering the car's path. A small white van just ahead near the center line edges left toward the ego lane, preparing to merge and narrowing the gap in front. Oncoming cars, including a dark van, pass steadily in the opposite lane to the right, limiting merging opportunities and keeping the flow cautious.", "hazard_reasoning": "There is a pedestrian wearing a black jacket, walking directly in front of the ego car. The driver must stop immediately to avoid a collision with the pedestrian crossing directly ahead."}
{"id": "train_04714", "split": "train", "clip_key": "2020-0228-102841_094391_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "094391"}, "frames": ["2020-0228-102841_094391_movie_t-3.jpg", "2020-0228-102841_094391_movie_t-2.jpg", "2020-0228-102841_094391_movie_t-1.jpg", "2020-0228-102841_094391_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light", "environment_perception": "An urban two-way street with two same-direction lanes and a yellow centerline appears dry and in good condition, and traffic is moderate and halted at an overhead red light. A white hatchback directly ahead in the ego lane is stopped for the red signal, holding the lane. To its right, a small box truck with a white van behind waits in the adjacent lane at the intersection, limiting any chance to change lanes. Oncoming vehicles, including a silver van near the centerline, proceed slowly in the opposite lane to the right, passing close but remaining outside the ego path.", "hazard_reasoning": "There is a white hatchback that has stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid colliding with the halted vehicle at the red signal."}
{"id": "train_04715", "split": "train", "clip_key": "2020-0220-102630_039545_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "039545"}, "frames": ["2020-0220-102630_039545_movie_t-3.jpg", "2020-0220-102630_039545_movie_t-2.jpg", "2020-0220-102630_039545_movie_t-1.jpg", "2020-0220-102630_039545_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately at the red light", "environment_perception": "An urban multi-lane road curves right toward a signalized intersection beneath an elevated railway, the pavement is in good condition with no median, and traffic is queued at the light. A black van directly ahead in the ego lane is stopped at the red signal, holding the queue and blocking the ego vehicle's path. Ahead-left, a small flatbed truck with a green tarp slows in the adjacent lane as it joins the line at the intersection, moving parallel to the ego. On the far right crosswalk, several pedestrians walk across in front of the stopped traffic, relevant because they occupy the crossing. The overhead traffic light shows red for the ego direction.", "hazard_reasoning": "There is a black van stopped in front of the ego car because of a red traffic light. You should stop immediately at the red light to maintain a safe distance and avoid a collision with the halted vehicle ahead."}
{"id": "train_04716", "split": "train", "clip_key": "2020-0205-103411_003275_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "003275"}, "frames": ["2020-0205-103411_003275_movie_t-3.jpg", "2020-0205-103411_003275_movie_t-2.jpg", "2020-0205-103411_003275_movie_t-1.jpg", "2020-0205-103411_003275_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian waiting to cross", "environment_perception": "An urban, signalized multi-way intersection with prominent scramble crosswalks is ahead; the pavement is clean and dry, and vehicle traffic is light and mostly stopped. On the near right corner, a pedestrian with a backpack waits at the curb by the tactile paving, close to the ego lane and may step into the crosswalk. Ahead across the junction, several pedestrians line the far curb, some edging forward as if preparing to cross the ego vehicle's path. At the left edge, a white car and a scooter are stopped near the corner, yielding before entering the intersection. Overhead traffic and pedestrian signals are present, and construction hoarding along the left sidewalk frames the corner without affecting the roadway.", "hazard_reasoning": "There is a pedestrian carrying a backpack, wearing a purple coat, and waiting to cross near the intersection. The driver should be aware of their potential to step into traffic when the signal changes."}
{"id": "train_04717", "split": "train", "clip_key": "titan_clip_509_000330_movie", "source": {"subset": "titan", "scenario": "clip_509", "frame": "000330"}, "frames": ["titan_clip_509_000330_movie_t-3.jpg", "titan_clip_509_000330_movie_t-2.jpg", "titan_clip_509_000330_movie_t-1.jpg", "titan_clip_509_000330_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian.", "environment_perception": "An urban residential street stretches ahead, a narrow two-way road without a centerline and smooth pavement, with light traffic and no oncoming vehicles visible. On the right edge ahead, a pedestrian in black pants carrying an umbrella walks away from the vehicle along the gutter, narrowing the available space in the ego lane. Slightly farther ahead on the same side, a pair of pedestrians move in the same direction, one pushing a stroller or cart, and they remain near the curb in the ego vehicle's path. A white car sits parked in a recessed driveway on the left beside some traffic cones, stationary and outside the travel lane.", "hazard_reasoning": "There is a pedestrian wearing black pant and carrying umbrella walking away from the ego car on the right side of the road. The driver should manoeuvre carefully around this pedestrian to maintain a safe clearance and prevent a collision."}
{"id": "train_04718", "split": "train", "clip_key": "2020-0131-135401_086273_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "086273"}, "frames": ["2020-0131-135401_086273_movie_t-3.jpg", "2020-0131-135401_086273_movie_t-2.jpg", "2020-0131-135401_086273_movie_t-1.jpg", "2020-0131-135401_086273_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the white van", "environment_perception": "An urban divided arterial with two same-direction lanes runs on smooth asphalt beside a metal barrier separating opposite-direction traffic, and flow is heavy and momentarily stopped. A white van directly ahead in the ego lane is stationary, waiting at a red traffic light and blocking the ego vehicle's path. In the adjacent left lane, a yellow box truck ahead slows to a stop with the queue, constraining any chance to pass. A silver van on the left, roughly alongside the ego car, also waits in the left lane and holds position. Across the barrier to the right, sparse oncoming cars continue along the opposite carriageway.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of a red traffic light. The white van has stopped at the red light, so the driver should stop to avoid a collision."}
{"id": "train_04719", "split": "train", "clip_key": "2020-0218-151547_020044_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "020044"}, "frames": ["2020-0218-151547_020044_movie_t-3.jpg", "2020-0218-151547_020044_movie_t-2.jpg", "2020-0218-151547_020044_movie_t-1.jpg", "2020-0218-151547_020044_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway runs under a large elevated structure with two same-direction lanes, a concrete wall on the left, a guardrail on the right, smooth pavement, and light traffic. A white flatbed truck travels ahead to the right in the adjacent lane, maintaining speed parallel to the ego vehicle without encroaching. A white passenger car is farther ahead in the ego lane, moving steadily and loosely setting the following distance. Additional cars appear farther ahead in both lanes, continuing with the flow. No traffic signals are visible, and no pedestrians, cyclists, or obstacles appear.", "hazard_reasoning": "There are no immediate hazards detected in the scene; the driver can continue following the lead vehicle at a steady speed."}
{"id": "train_04720", "split": "train", "clip_key": "titan_clip_505_000090_movie", "source": {"subset": "titan", "scenario": "clip_505", "frame": "000090"}, "frames": ["titan_clip_505_000090_movie_t-3.jpg", "titan_clip_505_000090_movie_t-2.jpg", "titan_clip_505_000090_movie_t-1.jpg", "titan_clip_505_000090_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban commercial street with good pavement and left-hand traffic, consisting of a narrow single lane in the ego direction and no median; traffic is light. A white flatbed truck is directly ahead in the ego lane, slowing to a stop at a zebra crosswalk and temporarily setting the pace. Two pedestrians cross ahead from right to left on the crosswalk; one wears a black shirt, and they move in front of the truck as they continue across. A blue pedestrian crossing sign stands at the corner, and no other moving vehicles are immediately close.", "hazard_reasoning": "There is a pedestrian wearing black shirt and crossing the street, from the right side to the left side, ahead at the crosswalk. The driver needs to yield to the pedestrian as they are entering the vehicle's path at a marked crosswalk."}
{"id": "train_04721", "split": "train", "clip_key": "2020-0228-102841_042019_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "042019"}, "frames": ["2020-0228-102841_042019_movie_t-3.jpg", "2020-0228-102841_042019_movie_t-2.jpg", "2020-0228-102841_042019_movie_t-1.jpg", "2020-0228-102841_042019_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist", "environment_perception": "An urban arterial with two same-direction lanes runs ahead between guardrails, the pavement dry and smooth, and traffic is moderate as vehicles close on an intersection. A white hatchback directly ahead in the ego lane proceeds straight at a steady pace and governs the ego car's speed. On the far left, a cyclist carrying a blue backpack rides away along the curb, tracking parallel to the lane and potentially edging near the travel path. In the adjacent right lane ahead, a dark SUV continues straight at similar speed, remaining alongside and limiting room to change lanes. Overhead gantry signs show a left-turn lane and straight-through lanes, and a red-ring speed sign indicates 50.", "hazard_reasoning": "There is a cyclist carrying a blue backpack, cycling on the left side of the road, away from the ego car, to the left. The cyclist's proximity to moving vehicles and potential to drift into the ego lane requires the driver to stay alert and monitor their position."}
{"id": "train_04722", "split": "train", "clip_key": "titan_clip_501_000444_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_501_000444_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_501_000444_movie_t-3_augB1.jpg", "titan_clip_501_000444_movie_t-2_augB1.jpg", "titan_clip_501_000444_movie_t-1_augB1.jpg", "titan_clip_501_000444_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban side street with interlocking brick pavement runs straight ahead, lacking a center divider, and traffic is light with no oncoming vehicles visible. A man in a white shirt and black pants crosses from the left curb to the right directly in front of the ego car, occupying the lane and setting the pace. On the right, a pedestrian holding an umbrella stands at the curb near a pole, watching the crossing. Farther ahead, a box truck is stopped in the same lane with a person walking near its rear, which constrains the available space. A silver car is parked along the left edge.", "hazard_reasoning": "There is a man, wearing a white shirt and black pants, crossing the street, from the left side to the right side, in front of the ego-car. The driver should slow down because the pedestrian may remain in the vehicle's path and could be struck if the vehicle continues at its current speed."}
{"id": "train_04723", "split": "train", "clip_key": "2020-0131-103016_019802_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "019802"}, "frames": ["2020-0131-103016_019802_movie_t-3.jpg", "2020-0131-103016_019802_movie_t-2.jpg", "2020-0131-103016_019802_movie_t-1.jpg", "2020-0131-103016_019802_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the same direction and a red curbside lane on the left has smooth pavement and no median, with heavy flow queuing at a signalized intersection. A white van directly ahead in the ego lane slows and prepares to turn left at the intersection, temporarily holding the ego car's pace. To the right, a line of same-direction traffic including a black van and a red taxi creeps toward the stop line in the adjacent lane. Several pedestrians wait on the left sidewalk near the crosswalk. The traffic light ahead shows red, and blue overhead guide signs point to Shinjuku, Ichigaya, and Hanzomon.", "hazard_reasoning": "There is a white van slowing down in the ego lane, because it is turning left at the intersection, in front of the ego car. The van's deceleration indicates it will complete the turn ahead, requiring the driver to reduce speed to maintain a safe following distance and avoid a collision."}
{"id": "train_04724", "split": "train", "clip_key": "2020-0210-101957_066810_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "066810"}, "frames": ["2020-0210-101957_066810_movie_t-3.jpg", "2020-0210-101957_066810_movie_t-2.jpg", "2020-0210-101957_066810_movie_t-1.jpg", "2020-0210-101957_066810_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban road with two same-direction lanes and no median has dry pavement and slow, queueing traffic. A white van is stopped directly ahead in the left ego lane, in front of the ego car, blocking the path. To its right, a white hatchback farther ahead moves slowly in the adjacent lane as it passes the stopped van, constraining the ego vehicle's pace. A dark sedan alongside on the right proceeds straight in the next lane, occupying the merge gap. An overhead blue guide sign indicates a left turn toward Aoba ahead.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car. The driver should stop to avoid a collision with the stationary vehicle blocking the lane."}
{"id": "train_04725", "split": "train", "clip_key": "titan_clip_1225_000282_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1225_000282_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1225_000282_movie_t-3_augB1.jpg", "titan_clip_1225_000282_movie_t-2_augB1.jpg", "titan_clip_1225_000282_movie_t-1_augB1.jpg", "titan_clip_1225_000282_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow single-lane carriageway is lined by bollards and shopfronts; the pavement looks wet and smooth, and vehicular traffic is light to absent as the ego car proceeds slowly. Pedestrians dominate the scene ahead. In the middle of the road slightly ahead, a woman carrying an umbrella and wearing a gray top walks toward the ego vehicle, moving away from two other people along the right edge, which makes her take the center and could impede the ego vehicle's path. On the right near the bollards, the pair continues along the curb in the same direction as the ego car, close to the roadway and edging outward. Farther ahead, several pedestrians walk along and across the street, narrowing the available lane but keeping a steady pace. No signals or speed signs are prominent.", "hazard_reasoning": "There is a woman carrying an umbrella, wearing a gray shirt, and walking in the middle of the road towards the ego car because of two other people on the side of the road. The driver should slow down to safely navigate around the pedestrian crossing the road ahead."}
{"id": "train_04726", "split": "train", "clip_key": "titan_clip_140_000504_movie", "source": {"subset": "titan", "scenario": "clip_140", "frame": "000504"}, "frames": ["titan_clip_140_000504_movie_t-3.jpg", "titan_clip_140_000504_movie_t-2.jpg", "titan_clip_140_000504_movie_t-1.jpg", "titan_clip_140_000504_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrian crossing", "environment_perception": "An urban shopping street with a smooth two-way single-lane roadway and no median comes into view, and traffic is light but slowed at a marked crosswalk. Directly ahead, a short pedestrian in black pants carrying an umbrella and a backpack crosses from right to left on the zebra crossing, occupying the ego lane and prompting a stop. Other pedestrians stream across in both directions, some with umbrellas, continuing to pass in front and keeping the lane blocked. A white van ahead in the ego lane waits at the crosswalk for the pedestrians, further constraining the ego vehicle's pace.", "hazard_reasoning": "There is a short, female pedestrian wearing black pants, carrying an umbrella and a backpack, crossing the street on the pedestrian crossing from the right side to the left side because of the marked crosswalk. The driver needs to yield and stop to avoid colliding with the pedestrian entering the crosswalk."}
{"id": "train_04727", "split": "train", "clip_key": "titan_clip_23_000126_movie", "source": {"subset": "titan", "scenario": "clip_23", "frame": "000126"}, "frames": ["titan_clip_23_000126_movie_t-3.jpg", "titan_clip_23_000126_movie_t-2.jpg", "titan_clip_23_000126_movie_t-1.jpg", "titan_clip_23_000126_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with brick paving forms a single-lane carriageway with no median, and traffic is light and slow. A black mini-van ahead in the same lane rolls slowly and briefly stops near the curb, setting the pace. A pedestrian in a black suit crosses mid-block from the right to the left ahead, stepping into the lane and potentially entering the ego path. Two other pedestrians walk along the left edge under an umbrella and remain on the sidewalk. Cones and bollards on the left, along with parked bicycles and a scooter on the right, further narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a black suit, crossing the street in the middle of the road, from the right side to the left side. The driver should slow down because the pedestrian is in the driving path and could step unpredictably."}
{"id": "train_04728", "split": "train", "clip_key": "2020-0129-105040_087944_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "087944"}, "frames": ["2020-0129-105040_087944_movie_t-3.jpg", "2020-0129-105040_087944_movie_t-2.jpg", "2020-0129-105040_087944_movie_t-1.jpg", "2020-0129-105040_087944_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban four-lane arterial with two lanes per direction runs straight on dry, well-kept pavement, separated by flexible posts, and traffic is moderate with a short queue at the intersection. A gray SUV ahead in the ego lane is stopped for a red light and holds the ego vehicle. In the adjacent left lane, a large yellow mixer truck is also stopped slightly ahead, leaving no room to pass. Oncoming traffic moves in the right-side opposing lanes, where a blue car turns right through the junction while remaining separated by the median. The overhead signal facing the ego approach shows red.", "hazard_reasoning": "There is a gray SUV stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop immediately to avoid rear-ending the stopped SUV at the intersection."}
{"id": "train_04729", "split": "train", "clip_key": "2020-0214-145407_044185_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "044185"}, "frames": ["2020-0214-145407_044185_movie_t-3.jpg", "2020-0214-145407_044185_movie_t-2.jpg", "2020-0214-145407_044185_movie_t-1.jpg", "2020-0214-145407_044185_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to merging vehicle", "environment_perception": "An urban multi-lane road runs beneath an elevated expressway, with dashed lane divisions and smooth pavement; traffic is moderate and moving steadily near a signalized intersection. A white mini-truck directly ahead in the ego lane rolls forward slowly toward the crosswalk, setting the pace. A black sedan from the left lane cuts into the ego lane ahead, merging across the dashed line and narrowing the gap. A silver sedan slightly ahead in the right lane continues straight at a similar speed, remaining parallel. Traffic lights ahead show green as vehicles pass through the junction.", "hazard_reasoning": "There's a black sedan cutting in from the left lane to the ego lane. You should yield to the merging vehicle to avoid a collision and maintain safe spacing."}
{"id": "train_04730", "split": "train", "clip_key": "2020-0207-101955_095436_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "095436"}, "frames": ["2020-0207-101955_095436_movie_t-3.jpg", "2020-0207-101955_095436_movie_t-2.jpg", "2020-0207-101955_095436_movie_t-1.jpg", "2020-0207-101955_095436_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated expressway, forming a two-lane roadway in the ego direction with a concrete divider on the right that separates a parallel carriageway; the pavement is dry and smooth and traffic is light to moderate. A dark hatchback travels ahead in the ego lane at a steady speed, constraining the ego vehicle's pace. To its right, a white sedan in the adjacent lane moves slightly ahead and then holds position without signaling, remaining in its lane. Beyond the divider to the right, several vehicles proceed along the parallel road with no interaction. Overhead blue direction signs and a pedestrian overpass span the roadway as it continues straight.", "hazard_reasoning": "There are no apparent hazards in this scene, as the road is unobstructed and visibility is clear, so no warning is necessary."}
{"id": "train_04731", "split": "train", "clip_key": "2020-0204-103442_063974_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "063974"}, "frames": ["2020-0204-103442_063974_movie_t-3.jpg", "2020-0204-103442_063974_movie_t-2.jpg", "2020-0204-103442_063974_movie_t-1.jpg", "2020-0204-103442_063974_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane in each direction runs between mid-rise buildings, with blue shoulder markings and a smooth, dry surface; overall traffic is light except for a brief slowdown ahead. A black sedan directly ahead in the ego lane slows because traffic bunches farther up, setting the ego vehicle's pace. Farther ahead in the same lane, a white car continues at a slow crawl, contributing to the queue. On the opposite side, a cyclist moves along the curbside strip outside the travel lane.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to reduced speed ahead."}
{"id": "train_04732", "split": "train", "clip_key": "2020-0131-135401_053565_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "053565"}, "frames": ["2020-0131-135401_053565_movie_t-3.jpg", "2020-0131-135401_053565_movie_t-2.jpg", "2020-0131-135401_053565_movie_t-1.jpg", "2020-0131-135401_053565_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be cautious of the motorcycle.", "environment_perception": "An urban arterial with multiple lanes runs straight between mid-rise buildings; a row of orange bollards forms a median to the right that separates oncoming traffic, and the pavement is clean while flow is moderate and steady. A small white car ahead in the ego lane proceeds at a constant pace and sets the ego vehicle's speed. A black motorcycle moves in the lane to the left of the ego car, keeping pace as traffic flows. In the opposing lanes to the right beyond the bollards, a white minivan approaches and passes without interaction. Blue overhead direction signs are visible farther ahead.", "hazard_reasoning": "There is a black motorcycle moving in the lane to the left of the ego car, because traffic is flowing. The driver should be cautious of the motorcycle's movements, as it may merge into the ego-vehicle's lane unexpectedly."}
{"id": "train_04733", "split": "train", "clip_key": "titan_clip_1346_000570_movie", "source": {"subset": "titan", "scenario": "clip_1346", "frame": "000570"}, "frames": ["titan_clip_1346_000570_movie_t-3.jpg", "titan_clip_1346_000570_movie_t-2.jpg", "titan_clip_1346_000570_movie_t-1.jpg", "titan_clip_1346_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian unloading boxes", "environment_perception": "An urban divided avenue with three lanes in the ego direction and a fenced median on the right has dry, smooth pavement and light to moderate flow. On the left curb a small truck is parked partly in the left lane, creating a narrowing in the ego lane. Beside it, a pedestrian wearing a white T-shirt, gray pants, and a cap stands unloading the truck, close to the lane and may step into it. Ahead in the same lane a white coach bus continues straight at low speed, influencing the ego vehicle's pace. Oncoming cars move toward the camera on the far side of the median without interaction.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, gray pants, and a cap, standing at the left side of the road, because he is unloading a truck parked on the left. The driver should be aware that this pedestrian unloading boxes may step into the lane unexpectedly, so maintain caution aligned with the warning."}
{"id": "train_04734", "split": "train", "clip_key": "2020-0204-150838_080465_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "080465"}, "frames": ["2020-0204-150838_080465_movie_t-3.jpg", "2020-0204-150838_080465_movie_t-2.jpg", "2020-0204-150838_080465_movie_t-1.jpg", "2020-0204-150838_080465_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban two-way road with one lane per direction runs between trees and a sound barrier, divided by a solid yellow centerline; the pavement looks slightly worn and traffic is light to moderate moving steadily. A white box truck is directly ahead in the ego lane, continuing at a steady pace and effectively setting the ego vehicle's speed. Farther ahead in the same lane, a black van drives away from the ego car, widening the gap. In the opposing lane a distant car approaches, remaining separated by the centerline. A roadside work area with an excavator lies behind the right guardrail, and a pedestrian overpass spans the roadway ahead.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04735", "split": "train", "clip_key": "2020-0127-132751_055508_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "055508"}, "frames": ["2020-0127-132751_055508_movie_t-3.jpg", "2020-0127-132751_055508_movie_t-2.jpg", "2020-0127-132751_055508_movie_t-1.jpg", "2020-0127-132751_055508_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of side road van", "environment_perception": "An urban divided arterial with two same-direction lanes and a guardrail median has smooth pavement and light, steady traffic. A gray van runs in the right lane beside and slightly ahead of the ego vehicle at a similar speed without drifting toward the ego lane. Far ahead in the ego lane, a couple of cars continue at a constant pace and loosely set the flow. On the left at a side street, a white van is stopped, waiting to turn onto the ego lane. Red bollards and railings line the left corner, and overhead direction signs are visible in the distance.", "hazard_reasoning": "There is a white van stopped in a side road because it is waiting to turn onto the ego lane. It may merge into your lane unexpectedly, so be aware and prepare to adjust your speed."}
{"id": "train_04736", "split": "train", "clip_key": "2020-0207-101955_115766_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "115766"}, "frames": ["2020-0207-101955_115766_movie_t-3.jpg", "2020-0207-101955_115766_movie_t-2.jpg", "2020-0207-101955_115766_movie_t-1.jpg", "2020-0207-101955_115766_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban expressway under an elevated structure carries same-direction multi-lane traffic; the ego vehicle proceeds in the left lane on smooth pavement as flow stays heavy and slow. A blue sedan directly ahead in the ego lane slows because a box truck queuing further ahead reduces speed, so it constrains the ego car's pace. To the right, a large flatbed truck travels alongside at low speed, limiting room to change lanes. Farther ahead, several trucks in both lanes creep forward and sustain the congestion. A motorcycle filters between lanes ahead near the right lane, moving slowly and potentially entering the ego lane.", "hazard_reasoning": "There is a blue sedan slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The driver should slow down to maintain safe distance behind the slowing vehicles ahead."}
{"id": "train_04737", "split": "train", "clip_key": "titan_clip_848_000138_movie", "source": {"subset": "titan", "scenario": "clip_848", "frame": "000138"}, "frames": ["titan_clip_848_000138_movie_t-3.jpg", "titan_clip_848_000138_movie_t-2.jpg", "titan_clip_848_000138_movie_t-1.jpg", "titan_clip_848_000138_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around her", "environment_perception": "The camera moves along a narrow brick-paved single-lane urban shopping street with no divider, lined by storefronts; no motor traffic is visible and progress is slow among many pedestrians. Several pedestrians ahead cross the lane near a small junction, directly occupying the path and setting the pace. On the right edge close to the camera, two people walk toward the camera along the curb and step partly into the lane, staying close to the vehicle's path. On the left side, a woman with purple hair wearing a gray shirt and blue shorts holds a brown bag and stands by the curb near the lane, where she may enter it.", "hazard_reasoning": "There is a woman with purple hair, wearing a gray shirt and blue shorts, carrying a brown bag, and standing on the left side of the road. This pedestrian stands close to the roadway and may enter the lane unexpectedly, so the driver should manoeuvre carefully around her to avoid collision."}
{"id": "train_04738", "split": "train", "clip_key": "titan_clip_455_000126_movie", "source": {"subset": "titan", "scenario": "clip_455", "frame": "000126"}, "frames": ["titan_clip_455_000126_movie_t-3.jpg", "titan_clip_455_000126_movie_t-2.jpg", "titan_clip_455_000126_movie_t-1.jpg", "titan_clip_455_000126_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck.", "environment_perception": "An urban two-way street with narrow lanes and cobblestone-like pavement runs between mid-rise buildings, and traffic is light and slow. Ahead on the left in the ego lane, a white box truck is parked for unloading, with workers and carts beside it encroaching into the roadway, constraining the ego vehicle to slow and pass on the right. From a left-side junction near the ego, a black sedan turns right into the street ahead, taking the lane in front of the ego vehicle. Farther ahead in the opposing lane, an oncoming car edges forward past the obstruction, reducing the available gap. Bollards and a tight curb on the right limit maneuvering space.", "hazard_reasoning": "There is a white truck parked on the left side of the road, in the ego-lane, because it is being unloaded. The parked truck blocks the travel lane while unloading, so the driver must carefully manoeuvre around it to avoid a collision."}
{"id": "train_04739", "split": "train", "clip_key": "2020-0220-102630_020897_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "020897"}, "frames": ["2020-0220-102630_020897_movie_t-3.jpg", "2020-0220-102630_020897_movie_t-2.jpg", "2020-0220-102630_020897_movie_t-1.jpg", "2020-0220-102630_020897_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with multiple same-direction lanes runs straight on smooth asphalt, separated from oncoming lanes at the far right by a metal median fence; traffic is moderate with a slow queue forming ahead. A white sedan directly ahead in the ego lane begins moving to the right lane because a tall box truck ahead of it is slowing, briefly constraining the ego car's pace as it shifts across the dashed line. The box truck farther ahead in the same lane decelerates in the queue and remains the main bottleneck for vehicles behind. In the adjacent right lane, a small covered mini-truck travels slowly just ahead, influencing the sedan's merge timing. Oncoming traffic beyond the fence moves steadily in the opposite direction. A roadside circular no-parking sign is visible on the left.", "hazard_reasoning": "There is a white sedan changing lanes, from the ego-car lane, to the right lane, because of a truck that has slowed down in front of the sedan. This lane change may lead to a sudden conflict ahead, so you need to reduce speed."}
{"id": "train_04740", "split": "train", "clip_key": "titan_clip_182_000534_movie", "source": {"subset": "titan", "scenario": "clip_182", "frame": "000534"}, "frames": ["titan_clip_182_000534_movie_t-3.jpg", "titan_clip_182_000534_movie_t-2.jpg", "titan_clip_182_000534_movie_t-1.jpg", "titan_clip_182_000534_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully", "environment_perception": "A narrow urban alley with a single shared lane and no centerline has smooth pavement and very light traffic with no vehicles visible. The way is hemmed by bollards and chains along the left walkway and a building line with orange cones on the right. A pedestrian in a gray shirt walks toward the ego car along the right edge of the road, encroaching slightly into the lane and constraining its pace. Another pedestrian stands on the left sidewalk near the trees, looking at a phone and remaining clear of the roadway. Farther ahead on the right, a person lingers by the wall near the cones, close to the vehicle's path.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, walking on the right side of the road, towards the ego car. The driver should carefully manoeuvre because the pedestrian is approaching the vehicle's path and may cross unexpectedly."}
{"id": "train_04741", "split": "train", "clip_key": "2020-0131-135401_066950_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "066950"}, "frames": ["2020-0131-135401_066950_movie_t-3.jpg", "2020-0131-135401_066950_movie_t-2.jpg", "2020-0131-135401_066950_movie_t-1.jpg", "2020-0131-135401_066950_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban steel-truss bridge carries a multi-lane roadway with metal railings and smooth pavement; an expansion joint spans the deck near the camera, and traffic flows lightly. No oncoming traffic is visible. A box truck ahead near the center lanes travels steadily in the same direction and remains in front, effectively setting the ego vehicle's pace. A white microvan is close in the adjacent right lane beside the camera and gradually pulls ahead, presenting nearby parallel traffic. Farther ahead a few cars continue in the same direction with stable gaps and no noticeable lane changes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04742", "split": "train", "clip_key": "titan_clip_1117_000252_movie", "source": {"subset": "titan", "scenario": "clip_1117", "frame": "000252"}, "frames": ["titan_clip_1117_000252_movie_t-3.jpg", "titan_clip_1117_000252_movie_t-2.jpg", "titan_clip_1117_000252_movie_t-1.jpg", "titan_clip_1117_000252_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban commercial street with a single undivided lane and smooth pavement is shown; motor traffic is light while pedestrian activity is steady. Bollards line the right edge and storefronts crowd both sides. A delivery box truck is stopped ahead along the left side partly in the lane, with cartons on the roadway, reducing the available width and constraining the ego vehicle's pace. A pedestrian wearing a cap stands on the left by the truck, loading a handcart as he unloads, and he edges toward the lane where he may enter the ego path. Several pedestrians walk farther ahead near the center and along the right side, moving slowly and creating a narrow corridor for passage. No salient signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a cap, loading a cart, and standing on the left side of the road, because he is unloading a truck. The pedestrian's position in the lane and potential movement into traffic create a collision risk, so the driver should carefully manoeuvre around the pedestrian to maintain safety."}
{"id": "train_04743", "split": "train", "clip_key": "2020-0225-102455_085596_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "085596"}, "frames": ["2020-0225-102455_085596_movie_t-3.jpg", "2020-0225-102455_085596_movie_t-2.jpg", "2020-0225-102455_085596_movie_t-1.jpg", "2020-0225-102455_085596_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road lined with office buildings has dry, well-kept pavement and heavy, slow-moving traffic. Directly ahead in the ego lane, a white hatchback slows because of congestion further ahead, setting the ego vehicle's pace. In the adjacent right lane, a flatbed truck creeps forward parallel to the ego vehicle, close to it. Alongside at close range on the right, a white car edges forward in the queue, remaining beside the ego vehicle. A yellow delivery van stands partly in the left curb lane, narrowing space near the sidewalk.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car, in the ego lane, because of the traffic congestion ahead. The driver should slow down to maintain a safe following distance under this congestion."}
{"id": "train_04744", "split": "train", "clip_key": "titan_clip_125_000408_movie", "source": {"subset": "titan", "scenario": "clip_125", "frame": "000408"}, "frames": ["titan_clip_125_000408_movie_t-3.jpg", "titan_clip_125_000408_movie_t-2.jpg", "titan_clip_125_000408_movie_t-1.jpg", "titan_clip_125_000408_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with mid-rise buildings forms a narrow two-way road without a marked centerline; the pavement is smooth and traffic appears light as the car approaches a zebra crossing at a small intersection, with no traffic lights visible. A pedestrian holding a white umbrella steps from the left curb into the crosswalk ahead, moving right and potentially entering the ego lane. On the right corner, a small group of pedestrians waits on the sidewalk near the crosswalk, watching the roadway and possibly preparing to cross. A cyclist near the right edge by the crosswalk rolls slowly toward the street as if to cross ahead.", "hazard_reasoning": "No hazards are present in this scene; the road is clear and conditions are normal, so no immediate driver action is required."}
{"id": "train_04745", "split": "train", "clip_key": "titan_clip_134_000570_movie", "source": {"subset": "titan", "scenario": "clip_134", "frame": "000570"}, "frames": ["titan_clip_134_000570_movie_t-3.jpg", "titan_clip_134_000570_movie_t-2.jpg", "titan_clip_134_000570_movie_t-1.jpg", "titan_clip_134_000570_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban commercial street with a single lane each way and no median leads to a small unsignalized intersection marked by a zebra crossing; pavement is smooth and traffic is light. A black van turns through the intersection ahead from the left side to the right side, passing through the middle and briefly crossing the ego vehicle's path. Several pedestrians are in the crosswalk ahead, walking both left to right and right to left, occupying the ego lane and slowing its approach. A vehicle is stopped at the left curb near the corner without moving. A no-entry sign is posted for the side street on the left.", "hazard_reasoning": "A black van driving in the middle of the intersection, from the left side to the right side. The driver should yield because a pedestrian is crossing nearby and could enter the van's path."}
{"id": "train_04746", "split": "train", "clip_key": "2020-0203-154554_007480_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "007480"}, "frames": ["2020-0203-154554_007480_movie_t-3.jpg", "2020-0203-154554_007480_movie_t-2.jpg", "2020-0203-154554_007480_movie_t-1.jpg", "2020-0203-154554_007480_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with no median and smooth pavement runs ahead, gently bending left, with light same-direction traffic. A city bus ahead near the left curb is stopped or slowing at a marked bus stop, partially encroaching on the travel lane and likely to constrain the ego-vehicle's pace. A white passenger car farther ahead in the center continues steadily away in the same direction. Several parked cars line the right edge of the roadway, narrowing the usable lane. A pedestrian on the left sidewalk walks beside a railing and rows of parked bicycles, remaining off the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04747", "split": "train", "clip_key": "2020-0227-104226_012644_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "012644"}, "frames": ["2020-0227-104226_012644_movie_t-3.jpg", "2020-0227-104226_012644_movie_t-2.jpg", "2020-0227-104226_012644_movie_t-1.jpg", "2020-0227-104226_012644_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban boulevard with three lanes in the ego direction runs between tall buildings, divided by a low shrub median; the dry pavement is smooth and traffic moves at a moderate, steady pace. A white sedan ahead in the center lane proceeds straight at similar speed, setting the ego vehicle's following gap. Slightly ahead to the left, a black compact car continues straight in the left lane, remaining parallel. Farther left by the curb, a white box truck slows and restricts the left lane. Overhead signs indicate the left and center lanes go straight and the rightmost lane is for right turns.", "hazard_reasoning": "No hazards are present in the frame and the roadway is unobstructed; the driver can maintain current course and speed without adjustment."}
{"id": "train_04748", "split": "train", "clip_key": "2020-0213-143552_012452_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "012452"}, "frames": ["2020-0213-143552_012452_movie_t-3.jpg", "2020-0213-143552_012452_movie_t-2.jpg", "2020-0213-143552_012452_movie_t-1.jpg", "2020-0213-143552_012452_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Be aware of cyclist crossing ahead", "environment_perception": "An urban intersection is shown as the ego car approaches on a narrow left-hand lane that curves right to merge into a broader road; there is no median, the pavement is smooth, and traffic is light to moderate on the main road. A cyclist wearing black stands on the left sidewalk at the near crosswalk ahead, waiting to cross in front of the ego car and potentially entering its path. A small pickup truck on the main road ahead moves right to left across the crosswalk, continuing straight and limiting the ego's merging gap. A white van follows the truck in the same direction, also proceeding through the intersection and further constraining the merge. A signalized junction is visible.", "hazard_reasoning": "There is a cyclist wearing black waiting to cross with their bike at a crosswalk in front of the ego car. The cyclist may enter the road unexpectedly, so the driver should be aware to avoid a collision."}
{"id": "train_04749", "split": "train", "clip_key": "2020-0131-135401_015922_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "015922"}, "frames": ["2020-0131-135401_015922_movie_t-3.jpg", "2020-0131-135401_015922_movie_t-2.jpg", "2020-0131-135401_015922_movie_t-1.jpg", "2020-0131-135401_015922_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection, with two same-direction lanes and smooth pavement; traffic is heavy and queued. A black van stopped ahead in the ego lane holds the ego vehicle at the line. To the right, a motorcycle rides forward in the adjacent lane, passing the queue close to the ego lane. Beside the ego vehicle, a white hatchback in the right lane creeps ahead with the traffic, limiting lateral space. Overhead and roadside signs on the left indicate straight ahead only and no right turn as the lanes approach the junction.", "hazard_reasoning": "There is a black van stopped in the ego lane, in front of the ego car. The stopped van blocks the path and requires you to stop to avoid a collision."}
{"id": "train_04750", "split": "train", "clip_key": "titan_clip_365_000546_movie", "source": {"subset": "titan", "scenario": "clip_365", "frame": "000546"}, "frames": ["titan_clip_365_000546_movie_t-3.jpg", "titan_clip_365_000546_movie_t-2.jpg", "titan_clip_365_000546_movie_t-1.jpg", "titan_clip_365_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban residential two-way street with no centerline runs between walled houses and dense greenery; the pavement is smooth and traffic is light with no vehicles visible. Ahead on the right side of the road, a pedestrian carrying a backpack and an umbrella walks away from the ego vehicle in the carriageway because overgrown plants block the sidewalk. Closer on the right edge, an elderly person using a cane also walks away along the roadway, occupying part of the ego path. Farther right, another pedestrian approaches the camera along the edge line, continuing in the opposite direction. Dense vegetation encroaches on the right, narrowing the usable space for walkers and vehicles.", "hazard_reasoning": "There is a pedestrian carrying a backpack and umbrella, walking on the right side of the road, away from the ego car, because of the plant blocking the sidewalk. The pedestrian may step into the travel lane to avoid the obstacle, so the driver should slow down."}
{"id": "train_04751", "split": "train", "clip_key": "2020-0220-151845_059990_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "059990"}, "frames": ["2020-0220-151845_059990_movie_t-3.jpg", "2020-0220-151845_059990_movie_t-2.jpg", "2020-0220-151845_059990_movie_t-1.jpg", "2020-0220-151845_059990_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban covered expressway with two lanes in the ego direction runs through a tunnel-like structure bounded by metal railings; pavement looks smooth and traffic is moderate and gradually slowing. A red truck directly ahead in the ego left lane slows as traffic bunches up ahead, constraining the ego vehicle. A small silver hatchback travels slightly ahead in the adjacent right lane at a similar speed, limiting an immediate lane change. Farther ahead, a line of vehicles in both lanes forms under the canopy and sets the pace, while overhead lighting and guardrails are visible and no salient signals stand out.", "hazard_reasoning": "There is a red truck slowing down in the ego lane because of traffic congestion ahead. This slowdown indicates congestion ahead, so you should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_04752", "split": "train", "clip_key": "2020-0210-155354_030112_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "030112"}, "frames": ["2020-0210-155354_030112_movie_t-3.jpg", "2020-0210-155354_030112_movie_t-2.jpg", "2020-0210-155354_030112_movie_t-1.jpg", "2020-0210-155354_030112_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban multi-lane arterial is shown, with two lanes in the ego direction separated from oncoming lanes by an orange center line; the pavement is dry and smooth, and traffic flows at a moderate, steady pace beneath an overhead pedestrian footbridge. A gray truck is parked on the left side of the road ahead in the ego lane, standing still and narrowing the lane as vehicles pass on the right. A line of cars in the adjacent right same-direction lane proceeds past the obstruction at steady speed, constraining any merge from the ego lane. Oncoming vehicles in the far-right lanes move toward the camera smoothly, remaining separated by the center line. Flexible bollards delineate a hatched buffer between lanes.", "hazard_reasoning": "There is a gray truck parked on the left side of the road. The obstruction could conceal oncoming vehicles or pedestrians, so you should carefully manoeuvre around it to maintain safety."}
{"id": "train_04753", "split": "train", "clip_key": "2020-0225-102455_055291_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "055291"}, "frames": ["2020-0225-102455_055291_movie_t-3.jpg", "2020-0225-102455_055291_movie_t-2.jpg", "2020-0225-102455_055291_movie_t-1.jpg", "2020-0225-102455_055291_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs beneath an elevated expressway, with a single lane in the ego direction separated from the opposite side by a metal guardrail; the pavement is smooth and marked 50, and traffic is light in our lane while the opposite side moves steadily. A black van is stopped at the left curb just ahead, protruding into the ego lane and constraining the path. On the far side of the median to the right, several cars travel the oncoming carriageway at moderate speed without interacting. A bicyclist rides along the left sidewalk beside buildings, remaining behind the railing. Overhead Japanese direction signs are visible.", "hazard_reasoning": "No potential hazards detected; traffic is moderate, the roadway is clear, and visibility is good, so the driver can proceed normally."}
{"id": "train_04754", "split": "train", "clip_key": "2020-0129-105040_010401_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-105040_010401_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-105040_010401_movie_t-3_augB1.jpg", "2020-0129-105040_010401_movie_t-2_augB1.jpg", "2020-0129-105040_010401_movie_t-1_augB1.jpg", "2020-0129-105040_010401_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road approaches an intersection, the pavement smooth and dry with moderate same-direction traffic. Ahead-left, a blue truck moves right, cutting into the ego lane from the left lane and preparing to merge directly in front. Straight ahead, a small white box truck continues in the ego lane at a steady pace, constraining the ego vehicle's speed. On the right, a large coach bus runs parallel slightly ahead in the adjacent lane, maintaining speed and limiting space to merge right.", "hazard_reasoning": "There is a blue truck lane cutting into the ego lane, from the left lane. The blue truck's merging motion requires you to slow down to maintain a safe distance and avoid a collision."}
{"id": "train_04755", "split": "train", "clip_key": "2020-0220-102630_084062_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "084062"}, "frames": ["2020-0220-102630_084062_movie_t-3.jpg", "2020-0220-102630_084062_movie_t-2.jpg", "2020-0220-102630_084062_movie_t-1.jpg", "2020-0220-102630_084062_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial in Japan carries moderate, steadily moving traffic on smooth pavement, with lanes divided mainly by painted hatch markings and no physical median. A white van ahead in the ego lane pulls away as traffic ahead moves, gradually widening the gap. To the right, a green city bus in the adjacent lane proceeds slowly alongside, constraining lateral space. At the far left margin near the hatched gore, a silver van noses forward as if merging and may enter the ego lane. An overhead pedestrian bridge and distant direction signs span the roadway.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car, because traffic ahead is moving. You should follow the vehicle ahead to maintain a safe distance and anticipate stops at the upcoming red light."}
{"id": "train_04756", "split": "train", "clip_key": "2020-0220-102630_121656_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "121656"}, "frames": ["2020-0220-102630_121656_movie_t-3.jpg", "2020-0220-102630_121656_movie_t-2.jpg", "2020-0220-102630_121656_movie_t-1.jpg", "2020-0220-102630_121656_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban residential street with low-rise buildings features a two-lane two-way road marked by a yellow centerline, narrow shoulders, and smooth pavement, and traffic is light. Ahead in the left ego lane, a black car is stopped and blocks the path, as noted, holding the ego vehicle. In the opposing lane to the right, a white car approaches and continues straight past. A pedestrian stands on the left sidewalk near a building, remaining clear of the roadway. No salient traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a black SUV stopped in the ego lane. The driver needs to stop immediately to avoid colliding with the stationary SUV blocking the lane ahead."}
{"id": "train_04757", "split": "train", "clip_key": "titan_clip_562_000468_movie", "source": {"subset": "titan", "scenario": "clip_562", "frame": "000468"}, "frames": ["titan_clip_562_000468_movie_t-3.jpg", "titan_clip_562_000468_movie_t-2.jpg", "titan_clip_562_000468_movie_t-1.jpg", "titan_clip_562_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with shops lines both sides, the pavement is smooth, there is no center line, and traffic is light with no vehicles visible. The ego-vehicle proceeds along the left side of the shared lane. Ahead on the left, two pedestrians walk away in the same direction along the roadway edge, including one wearing a white dress and carrying a handbag, and they partially occupy the ego path. A parked bicycle and store displays crowd the left curb, slightly narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white dress, carrying a handbag, and walking on the left side of the road, away from the ego-car. The pedestrian may step further into the vehicle's path, so the driver should carefully manoeuvre around them."}
{"id": "train_04758", "split": "train", "clip_key": "2020-0214-145407_027243_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "027243"}, "frames": ["2020-0214-145407_027243_movie_t-3.jpg", "2020-0214-145407_027243_movie_t-2.jpg", "2020-0214-145407_027243_movie_t-1.jpg", "2020-0214-145407_027243_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs through a business district with smooth pavement and a barrier-separated ramp on the right; traffic appears light to moderate and steady. A dark sedan directly ahead in the ego lane cruises at a modest speed, while a white sedan farther ahead in the same lane slows and effectively sets the pace for the ego vehicle. On the ramp to the right, a bus and other vehicles proceed parallel behind the barrier and do not interact with the ego lane. A few pedestrians walk along the left sidewalk at a distance without approaching the roadway. An overhead gantry ahead carries ETC signage, indicating a toll facility along the route.", "hazard_reasoning": "A white sedan is slowing in front of the ego car in the ego lane. The driver should slow down to avoid a potential collision with the decelerating vehicle ahead."}
{"id": "train_04759", "split": "train", "clip_key": "2020-0220-102630_051961_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "051961"}, "frames": ["2020-0220-102630_051961_movie_t-3.jpg", "2020-0220-102630_051961_movie_t-2.jpg", "2020-0220-102630_051961_movie_t-1.jpg", "2020-0220-102630_051961_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with three same-direction lanes runs between mid-rise buildings, the pavement dry and smooth, with red bollards separating the right edge; traffic is heavy and slow. The ego car proceeds in the middle lane amid a short queue. A black van directly ahead in the ego lane slows due to congestion ahead, constraining the ego vehicle's pace. A white delivery truck in the left lane travels parallel slightly behind while holding its lane, limiting space for a leftward move. A white box truck ahead-right in the adjacent lane creeps forward with brake lights on, remaining just ahead of the van and contributing to the slow flow.", "hazard_reasoning": "There is a black van slowing down in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid collision from suddenly reduced traffic speed."}
{"id": "train_04760", "split": "train", "clip_key": "2020-0217-110854_006576_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "006576"}, "frames": ["2020-0217-110854_006576_movie_t-3.jpg", "2020-0217-110854_006576_movie_t-2.jpg", "2020-0217-110854_006576_movie_t-1.jpg", "2020-0217-110854_006576_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street with no median and smooth asphalt runs between buildings; traffic appears light and slow due to roadside loading. Ahead in the ego lane, a cyclist rides in the middle of the road moving away from the camera and effectively sets the car's pace. On the left just ahead, a flatbed truck is stopped for deliveries with stacks of boxes and a worker beside it, narrowing the lane and reducing clearance. A white van is stopped at the curb behind the loading area. On the right sidewalk, a pedestrian walks forward parallel to traffic while remaining off the roadway.", "hazard_reasoning": "There is a cyclist wearing a blue shirt, cycling in the middle of the road, away from the ego car. The cyclist's position in the lane could cause unexpected movements, so the driver should slow down to maintain a safe distance and avoid a collision under this situation."}
{"id": "train_04761", "split": "train", "clip_key": "titan_clip_682_000246_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_682_000246_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_682_000246_movie_t-3_augB1.jpg", "titan_clip_682_000246_movie_t-2_augB1.jpg", "titan_clip_682_000246_movie_t-1_augB1.jpg", "titan_clip_682_000246_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "A narrow urban street with a single lane and no median runs between shops; the pavement looks smooth and traffic is light, though the lane is partly obstructed. On the left near the ego vehicle, a large blue truck is stopped with its door open and a worker on the step, occupying part of the lane and constraining the pace. Also on the left, a man in a blue uniform and helmet stands and guides traffic around the loading activity. Along the right storefronts, several pedestrians and staff walk or wait close to the curb, one handling a wheeled cage of boxes that juts toward the roadway.", "hazard_reasoning": "There is a man wearing a blue uniform, wearing a helmet, standing on the left side of the road, because he is guiding traffic. The driver should stop because the worker is actively directing traffic and may signal vehicles to halt to allow pedestrians and cyclists to cross safely."}
{"id": "train_04762", "split": "train", "clip_key": "2020-0212-150403_013404_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "013404"}, "frames": ["2020-0212-150403_013404_movie_t-3.jpg", "2020-0212-150403_013404_movie_t-2.jpg", "2020-0212-150403_013404_movie_t-1.jpg", "2020-0212-150403_013404_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a painted median and smooth pavement carries moderate same-direction traffic, with brief merging near a blockage. To the left, a white mid-SUV cuts into the ego lane ahead from the left lane because a large box truck is stopped there, forcing the merge. A black van directly ahead in the ego lane continues slowly and constrains the ego vehicle's pace. In the right adjacent lane, a dark minivan proceeds forward and overtakes. No unusual signals or work zones are evident.", "hazard_reasoning": "There is a white mid-SUV cutting in front of the ego car, from the left lane to the ego lane, because of a truck stopped in the left lane. The driver should slow down to maintain a safe distance and avoid a potential collision due to the sudden lane change."}
{"id": "train_04763", "split": "train", "clip_key": "2020-0213-143552_057688_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "057688"}, "frames": ["2020-0213-143552_057688_movie_t-3.jpg", "2020-0213-143552_057688_movie_t-2.jpg", "2020-0213-143552_057688_movie_t-1.jpg", "2020-0213-143552_057688_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with two lanes in the ego direction runs past low- to mid-rise buildings; a raised shrub median separates oncoming traffic, the pavement is dry, and overall flow is light. A white truck ahead in the ego lane slows and the ego car follows at its pace. On the far side of the median, oncoming cars move steadily without interacting with the ego lane. A pedestrian overpass spans the road ahead and no salient signals or unusual controls are visible.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane. Since the truck is reducing speed, the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_04764", "split": "train", "clip_key": "2020-0227-104226_054546_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054546"}, "frames": ["2020-0227-104226_054546_movie_t-3.jpg", "2020-0227-104226_054546_movie_t-2.jpg", "2020-0227-104226_054546_movie_t-1.jpg", "2020-0227-104226_054546_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-lane road with a solid centerline and smooth pavement is seen, with no median and moderate two-way flow. The ego faces along the left lane at a zebra crossing. A black hatchback drives in the oncoming right lane toward the ego car, continuing straight and occupying the opposing lane. Several additional oncoming cars follow farther ahead in the same lane, maintaining continuous opposite-direction traffic. A pedestrian stands on the right sidewalk near the crosswalk, waiting and not stepping into the roadway.", "hazard_reasoning": "There is a black hatchback driving in the right lane, towards the ego car. This approaching vehicle could collide with you as you enter the intersection, so you should stop immediately to avoid an accident."}
{"id": "train_04765", "split": "train", "clip_key": "titan_clip_746_000252_movie", "source": {"subset": "titan", "scenario": "clip_746", "frame": "000252"}, "frames": ["titan_clip_746_000252_movie_t-3.jpg", "titan_clip_746_000252_movie_t-2.jpg", "titan_clip_746_000252_movie_t-1.jpg", "titan_clip_746_000252_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrians", "environment_perception": "A narrow urban street with buildings tight to the curb has no median and worn but intact pavement, and traffic is light with no moving vehicles ahead. A group of pedestrians wearing white shirts and black pants walks away from the ego vehicle in the middle of the road ahead, occupying the path and constraining the pace. On the right edge, a man walks toward the camera along the curb, partly in the roadway and close to the travel lane. Farther ahead on the right, another person moves with a bicycle near the sidewalk. Several vehicles are parked along the left, including a white sedan at the foreground that narrows the usable lane.", "hazard_reasoning": "There is a group of pedestrians wearing black pants and white shirts and walking away from the ego car in the middle of the road. The driver should yield because the pedestrians are crossing the lane ahead and require right of way to pass safely."}
{"id": "train_04766", "split": "train", "clip_key": "2020-0203-154554_073672_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_073672_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_073672_movie_t-3_augB1.jpg", "2020-0203-154554_073672_movie_t-2_augB1.jpg", "2020-0203-154554_073672_movie_t-1_augB1.jpg", "2020-0203-154554_073672_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction and a painted hatched median runs straight toward a signalized intersection; the pavement is dry and traffic is moderate, easing near the junction. A red kei car ahead in the ego lane proceeds slowly toward the intersection, constraining the ego vehicle's pace. A black motorcycle on the left side cuts in from the left lane toward the ego lane and may merge into the ego path. In the opposite direction, several white vans and cars approach on the right-side lane, continuing straight with steady flow.", "hazard_reasoning": "There is a black motorcycle cutting in from the left lane and toward the ego lane. The driver should slow down because the motorcycle's merge reduces space in the ego lane and increases collision risk if speed is maintained."}
{"id": "train_04767", "split": "train", "clip_key": "2020-0131-135401_005052_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "005052"}, "frames": ["2020-0131-135401_005052_movie_t-3.jpg", "2020-0131-135401_005052_movie_t-2.jpg", "2020-0131-135401_005052_movie_t-1.jpg", "2020-0131-135401_005052_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction, no median, smooth dry pavement, and light traffic. A large white box truck is stopped directly ahead in the ego lane, blocking the path and holding the ego car. In the opposite lane to the right, a small black car stands near the centerline alongside the truck, occupying the oncoming lane and leaving little room to pass. On the left sidewalk several pedestrians walk away from the camera near the curb but remain off the roadway. An overhead circular sign shows a 40 speed limit. Buildings tightly flank the road and the lane is constrained by raised curbs.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The driver should stop to avoid colliding with the stationary truck blocking the lane."}
{"id": "train_04768", "split": "train", "clip_key": "2020-0207-151349_010955_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "010955"}, "frames": ["2020-0207-151349_010955_movie_t-3.jpg", "2020-0207-151349_010955_movie_t-2.jpg", "2020-0207-151349_010955_movie_t-1.jpg", "2020-0207-151349_010955_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road leads to a signalized intersection, with a narrow curb and metal railing on the left and dry pavement in good condition; traffic is light and steady. A cyclist with a backpack rides ahead along the left edge of the ego lane, moving away at low speed and subtly constraining the car's approach to the crosswalk. Several pedestrians on both sidewalks to the right and left walk toward the zebra crossing and a few begin to cross, so they may enter the vehicle's path at the intersection. Another cyclist crosses the intersection from right to left ahead, traversing across the ego lane. Blue right-turn-only signs are posted on both sides of the intersection, and an overhead signal shows green.", "hazard_reasoning": "There is a cyclist carrying a backpack and cycling on the left side of the road, away from the ego car. Slowing down reduces the risk of colliding with the cyclist if they change direction or enter the vehicle's path."}
{"id": "train_04769", "split": "train", "clip_key": "2020-0217-110854_055261_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "055261"}, "frames": ["2020-0217-110854_055261_movie_t-3.jpg", "2020-0217-110854_055261_movie_t-2.jpg", "2020-0217-110854_055261_movie_t-1.jpg", "2020-0217-110854_055261_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road runs under an elevated expressway, bounded by concrete sidewalls and pillars; the pavement looks smooth and dry, and traffic is light with steady flow. The ego-vehicle proceeds in the left lane while the oncoming lane to the right remains clear. A white kei van travels ahead in the ego lane at a moderate, steady speed, setting the pace for the ego-vehicle. Farther ahead, another small car continues in the same direction near a gentle right bend, increasing its gap. Blue directional signs appear on the left, with no signals or unusual controls visible and no obstacles along the roadway.", "hazard_reasoning": "There are no immediate hazards visible, so the driver can maintain their current speed and lane position safely."}
{"id": "train_04770", "split": "train", "clip_key": "2020-0227-104226_100802_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "100802"}, "frames": ["2020-0227-104226_100802_movie_t-3.jpg", "2020-0227-104226_100802_movie_t-2.jpg", "2020-0227-104226_100802_movie_t-1.jpg", "2020-0227-104226_100802_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision.", "environment_perception": "An urban divided road with two same-direction lanes runs alongside a sidewalk and a right-side guardrail; the pavement is smooth and traffic moves slowly in light congestion. A white box truck is directly ahead in the ego lane and slows, constraining the ego car's pace. In the lane to the right, a small white van advances slightly faster, passing the ego vehicle and the truck while continuing straight. Farther ahead in the right lane, a cluster of cars and another truck creep forward, contributing to the slow flow.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The slowing truck may reduce speed unexpectedly, increasing the risk of a rear-end collision and requiring the driver to adjust speed accordingly."}
{"id": "train_04771", "split": "train", "clip_key": "2020-0213-143552_065817_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "065817"}, "frames": ["2020-0213-143552_065817_movie_t-3.jpg", "2020-0213-143552_065817_movie_t-2.jpg", "2020-0213-143552_065817_movie_t-1.jpg", "2020-0213-143552_065817_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban divided arterial with two same-direction lanes and a shrub median appears dry and in good condition, with moderate flow that bunches near a signalized intersection. A white box truck ahead in the ego lane slows for a red traffic light, setting the ego car's pace. A beige sedan travels ahead in the adjacent right lane, continuing past the ego vehicle while remaining in its lane and not impeding the ego path. A blue hatchback sits at the left curb near the ego car, appearing stationary and outside the through lane. The red signal is visible over the roadway and governs the queue forming in front.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane, because of a red traffic light ahead. The ego vehicle may collide if it does not stop promptly behind the slowing truck at the red light."}
{"id": "train_04772", "split": "train", "clip_key": "2020-0204-150838_084186_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "084186"}, "frames": ["2020-0204-150838_084186_movie_t-3.jpg", "2020-0204-150838_084186_movie_t-2.jpg", "2020-0204-150838_084186_movie_t-1.jpg", "2020-0204-150838_084186_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A suburban two-lane same-direction road has smooth asphalt, a metal guardrail and sound barrier on the right, and hedges on the left; traffic is heavy and largely stopped. A gray hatchback directly ahead in the ego lane is at a standstill because a queue of vehicles blocks the way, holding the ego vehicle. In the adjacent left lane, a small box truck and several cars are also stopped or creeping alongside, limiting any chance to pass. Farther ahead, additional trucks and cars remain queued in both lanes, indicating ongoing congestion. No salient signals or signs are visible, and the right shoulder is narrow behind the guardrail.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with this stationary vehicle due to the congestion."}
{"id": "train_04773", "split": "train", "clip_key": "titan_clip_149_000546_movie", "source": {"subset": "titan", "scenario": "clip_149", "frame": "000546"}, "frames": ["titan_clip_149_000546_movie_t-3.jpg", "titan_clip_149_000546_movie_t-2.jpg", "titan_clip_149_000546_movie_t-1.jpg", "titan_clip_149_000546_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street bordered by office buildings and trees is seen, with a narrow single-carriageway and smooth pavement; traffic is light and no vehicles are moving nearby. Two pedestrians cross the zebra crossing directly ahead from left to right, very close to the front of the ego vehicle and occupying its path, temporarily delaying progress. No salient traffic signals or speed signs are visible, and no other road users or hazards appear.", "hazard_reasoning": "There are no active hazards visible; the cones are positioned off the roadway and no road users pose risks, so the driver can proceed safely without extra caution."}
{"id": "train_04774", "split": "train", "clip_key": "2020-0207-101955_084247_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "084247"}, "frames": ["2020-0207-101955_084247_movie_t-3.jpg", "2020-0207-101955_084247_movie_t-2.jpg", "2020-0207-101955_084247_movie_t-1.jpg", "2020-0207-101955_084247_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway corridor with tall noise barriers confines a single through lane for the ego vehicle beside a right-side ramp separated by a guardrail; the asphalt is smooth and traffic is light with no oncoming flow on this divided road. A blue truck ahead in the ego lane slows slightly while proceeding straight, setting the ego car's pace. No other vehicles are close in the same direction or on the ramp. A roadside board on the right indicates a merge in 100 m, and an overpass and an upcoming underpass appear ahead.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, in front of the ego car. The truck's deceleration reduces the following distance and may require the driver to reduce speed to maintain a safe headway under this situation, aligning with the warning to slow down."}
{"id": "train_04775", "split": "train", "clip_key": "2020-0131-135401_011431_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-135401_011431_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-135401_011431_movie_t-3_augB1.jpg", "2020-0131-135401_011431_movie_t-2_augB1.jpg", "2020-0131-135401_011431_movie_t-1_augB1.jpg", "2020-0131-135401_011431_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each way and no median has smooth pavement and light to moderate traffic. Ahead in the ego lane, a white dump truck slows and constrains the ego vehicle's pace. In the oncoming lane to the right, a dark sedan approaches and passes steadily without encroaching on the ego lane. Pedestrians move along the left sidewalk near the hedges, remaining off the roadway. A white van is stopped at the right curb farther ahead, outside the travel lane. Overhead signage shows a 40 speed limit, and a signal gantry is visible at the upcoming intersection.", "hazard_reasoning": "There is a white dump truck slowing in the ego lane. The slowing truck ahead warrants reducing speed to maintain a safe following distance and prevent collision."}
{"id": "train_04776", "split": "train", "clip_key": "2020-0129-144857_001858_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "001858"}, "frames": ["2020-0129-144857_001858_movie_t-3.jpg", "2020-0129-144857_001858_movie_t-2.jpg", "2020-0129-144857_001858_movie_t-1.jpg", "2020-0129-144857_001858_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes runs straight between mid-rise buildings; fenced sidewalks and leafless trees line both sides, the pavement is dry, and traffic is slow and queued. A black minivan directly ahead in the ego lane is stopped because congestion ahead has formed, holding the ego vehicle at a standstill. Vehicles farther ahead in the adjacent right lane creep forward in the same queue, limiting passing options. Pedestrians and cyclists move along the sidewalks behind the railings without entering the roadway.", "hazard_reasoning": "There is a black minivan stopped in the ego lane, because of traffic congestion ahead. The driver should stop to maintain safe distance and avoid collision."}
{"id": "train_04777", "split": "train", "clip_key": "titan_clip_24_000252_movie", "source": {"subset": "titan", "scenario": "clip_24", "frame": "000252"}, "frames": ["titan_clip_24_000252_movie_t-3.jpg", "titan_clip_24_000252_movie_t-2.jpg", "titan_clip_24_000252_movie_t-1.jpg", "titan_clip_24_000252_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban shopping street with a single lane and brick pavement runs between tall buildings, with no divider and light, slow traffic. On the right side near the curb, a woman carrying a handbag walks toward the ego vehicle along the roadway and may step into the lane. Far ahead in the ego lane, a small box truck is stopped for loading with its rear open, obstructing the path. Several pedestrians around the truck cross the lane or wait at the curb, influencing the vehicle's speed. Black cones line the left edge, and stacked materials near the truck further narrow the passage.", "hazard_reasoning": "A pedestrian carrying a handbag is walking on the right side of the road, toward the ego car. Since the pedestrian is approaching the vehicle's path, the driver should be aware to prevent potential collision."}
{"id": "train_04778", "split": "train", "clip_key": "titan_clip_1142_000312_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1142_000312_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1142_000312_movie_t-3_augB1.jpg", "titan_clip_1142_000312_movie_t-2_augB1.jpg", "titan_clip_1142_000312_movie_t-1_augB1.jpg", "titan_clip_1142_000312_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrians ahead", "environment_perception": "A dense urban commercial street with a single narrow lane in each direction and no median shows smooth pavement and light traffic, with the oncoming lane mostly clear and no vehicles immediately ahead. Ahead in the center of the ego lane, two pedestrians walk away from the camera; one wears an orange skirt while the companion pulls a wheeled suitcase, occupying the lane and effectively setting the ego vehicle's pace. On the right at a parking garage entrance, another pedestrian steps diagonally toward the roadway and could enter the ego lane. Farther ahead along the left edge, several pedestrians move near storefronts but stay close to the curb. Narrow sidewalks and parked bicycles line the left side.", "hazard_reasoning": "Two pedestrians dragging a suitcase and wearing an orange skirt are walking in the middle of the lane, away from the ego car, because there is no sidewalk. The driver should slow down to safely navigate around pedestrians and avoid collision."}
{"id": "train_04779", "split": "train", "clip_key": "2020-0203-114632_058971_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "058971"}, "frames": ["2020-0203-114632_058971_movie_t-3.jpg", "2020-0203-114632_058971_movie_t-2.jpg", "2020-0203-114632_058971_movie_t-1.jpg", "2020-0203-114632_058971_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "be cautious of waiting pedestrian ahead", "environment_perception": "An urban arterial with three same-direction lanes approaches a wide signalized intersection with zebra crosswalks and smooth pavement; traffic is light and there is no physical median. Two white cars are ahead to the right at the stop line, stationary in the right lanes as they wait at the signal and could constrain the ego vehicle's approach. A city bus stands at the left curb near the intersection, paused at a stop and positioned to reenter the left lane ahead of the ego vehicle. A pedestrian wearing a black shirt waits on the left side near the crosswalk, looking across the roadway and may enter the ego lane when allowed. Signal heads are visible above the junction, and sidewalks on both sides carry scattered foot traffic.", "hazard_reasoning": "There is a pedestrian wearing a black shirt who is waiting at the left side of the road to cross. The pedestrian may step onto the roadway at any moment, so be cautious and prepared to slow down."}
{"id": "train_04780", "split": "train", "clip_key": "2020-0227-153144_042076_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "042076"}, "frames": ["2020-0227-153144_042076_movie_t-3.jpg", "2020-0227-153144_042076_movie_t-2.jpg", "2020-0227-153144_042076_movie_t-1.jpg", "2020-0227-153144_042076_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane intersection on a two-way road has dry, well-marked pavement and moderate traffic flowing smoothly. There is no median, and buildings line both sides. A white truck directly ahead in the ego lane accelerates away from the stop line through the junction on a green signal, effectively setting the ego car's pace. Two motorcyclists slightly ahead to the left proceed straight in the adjacent same-direction lane at a steady speed, remaining near the ego vehicle's path as the lanes continue. To the right, a small white van from the cross street moves across the intersection from right to left, briefly converging near the ego lane before clearing. A silver car on the far right approaches the junction more slowly, yielding to the crossing flow.", "hazard_reasoning": "There is a white truck accelerating in the ego-car lane, because of the green traffic light, in front of the ego car. The truck's sudden acceleration can force the driver to adjust speed rapidly, so follow the vehicle ahead to maintain a safe distance."}
{"id": "train_04781", "split": "train", "clip_key": "titan_clip_510_000384_movie", "source": {"subset": "titan", "scenario": "clip_510", "frame": "000384"}, "frames": ["titan_clip_510_000384_movie_t-3.jpg", "titan_clip_510_000384_movie_t-2.jpg", "titan_clip_510_000384_movie_t-1.jpg", "titan_clip_510_000384_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "In an urban area, the ego-vehicle travels on a narrow two-way road with one lane per direction, intact pavement, and light traffic. A gray box truck is parked along the left curb just ahead with its rear open for loading or unloading, encroaching into the ego lane and narrowing the passage. Farther ahead, a small car continues away in the same direction down the slope. In the opposite lane, an oncoming car approaches from mid-distance, reducing the available gap beside the parked truck. Orange cones line the right shoulder next to a wall, so there is no extra space on that side.", "hazard_reasoning": "There is a gray truck parked on the left side of the road because it is being loaded or unloaded. The driver should manoeuvre around the parked truck to maintain visibility and avoid collision."}
{"id": "train_04782", "split": "train", "clip_key": "2020-0129-105040_011244_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "011244"}, "frames": ["2020-0129-105040_011244_movie_t-3.jpg", "2020-0129-105040_011244_movie_t-2.jpg", "2020-0129-105040_011244_movie_t-1.jpg", "2020-0129-105040_011244_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban intersection with three approach lanes and a small landscaped median lies ahead; the pavement is clean and dry and overall flow is moderate. A white van ahead in the ego lane proceeds straight through the junction on a green light, pulling away from the ego vehicle. A dark van slightly ahead to the left turns left into a side street, moving away from the ego lane. A white truck ahead-right is stopped by the median and does not enter our path. Pedestrians on the left corner wait by the crosswalk without stepping into the road.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04783", "split": "train", "clip_key": "2020-0226-101332_043672_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "043672"}, "frames": ["2020-0226-101332_043672_movie_t-3.jpg", "2020-0226-101332_043672_movie_t-2.jpg", "2020-0226-101332_043672_movie_t-1.jpg", "2020-0226-101332_043672_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection beneath an elevated roadway, the pavement smooth and a metal guardrail along the right edge, with heavy slow-moving traffic. A white van directly ahead in the ego lane is stopped for the red light at the intersection, holding the ego vehicle. To the left, a queue of cars, including a black minivan beside the ego and a red taxi farther ahead, inches forward parallel to the ego lane without merging. In the right-turn lane, a red car ahead creeps toward the junction but remains separate from the ego path, and the overhead signal stays red.", "hazard_reasoning": "There is a white van stopped in the ego lane because of the red traffic light ahead at the intersection. The driver should stop to avoid colliding with the halted van at the red light."}
{"id": "train_04784", "split": "train", "clip_key": "2020-0227-153144_016511_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "016511"}, "frames": ["2020-0227-153144_016511_movie_t-3.jpg", "2020-0227-153144_016511_movie_t-2.jpg", "2020-0227-153144_016511_movie_t-1.jpg", "2020-0227-153144_016511_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three lanes in the ego direction and a wide painted median separating oncoming traffic, the pavement is smooth and overall flow is moderate and steady. Ahead in the ego lane, a black sedan moves left into the left lane, changing from the ego lane and clearing the path. Farther ahead to the right, a dark van in the adjacent lane continues straight at a similar pace in the same direction. On the outer lane to the right, a motorcycle travels forward slightly ahead of the ego vehicle. No unusual controls or obstacles are visible.", "hazard_reasoning": "There is a black sedan in front of the ego car, changing to the left lane from the ego lane. The sedan's lane change could reduce the gap and require sudden braking, so slow down to maintain a safe distance."}
{"id": "train_04785", "split": "train", "clip_key": "titan_clip_1094_000450_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1094_000450_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1094_000450_movie_t-3_augB1.jpg", "titan_clip_1094_000450_movie_t-2_augB1.jpg", "titan_clip_1094_000450_movie_t-1_augB1.jpg", "titan_clip_1094_000450_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrians", "environment_perception": "A narrow two-way urban side street runs between buildings, the asphalt dry and the overall vehicle flow light, though a stopped truck on the right edge reduces usable width. Ahead in the middle of the road, two pedestrians wearing black and gray shirts walk toward the right side, occupying the path where the ego vehicle would pass. On the right beside the truck, a worker in a reflective vest stands by an orange cone close to the carriageway, further constricting the lane. On the left near a storefront, a small group of pedestrians with bicycles stands at the curb, some edging into the roadway and limiting clearance. A parking sign is visible near the upcoming cross street.", "hazard_reasoning": "There are two pedestrians wearing black and gray shirts, and walking to the right side, in the middle of the road. Drivers should manoeuvre carefully around these pedestrians as they are crossing within the driving lane."}
{"id": "train_04786", "split": "train", "clip_key": "titan_clip_359_000840_movie", "source": {"subset": "titan", "scenario": "clip_359", "frame": "000840"}, "frames": ["titan_clip_359_000840_movie_t-3.jpg", "titan_clip_359_000840_movie_t-2.jpg", "titan_clip_359_000840_movie_t-1.jpg", "titan_clip_359_000840_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of the pedestrian", "environment_perception": "An urban shopping street with a single narrow undivided lane is paved with cobblestones and lined with storefronts; traffic is light and slows as the lane is shared with pedestrians. A dark hatchback ahead in the ego lane proceeds slowly toward the distance, constraining the ego vehicle's speed. On the left edge near the curb, a pedestrian in a white T-shirt, black pants, and a blue apron walks toward the ego car along the roadway and may enter its path. On the right, another pedestrian emerges from a shop and moves along the edge close to the travel line. A no-entry sign faces a side street on the left. Store displays, a cone, and a parked bicycle jut into the lane, narrowing space.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, black pants, and a blue apron walking on the left side of the road toward the ego car. The driver should be aware of the pedestrian to anticipate any sudden crossing and prevent a collision."}
{"id": "train_04787", "split": "train", "clip_key": "titan_clip_919_000066_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_919_000066_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_919_000066_movie_t-3_augB1.jpg", "titan_clip_919_000066_movie_t-2_augB1.jpg", "titan_clip_919_000066_movie_t-1_augB1.jpg", "titan_clip_919_000066_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around crossing pedestrians", "environment_perception": "An urban commercial two-way street with narrow single lanes and no median is shown; the pavement is smooth and vehicle flow is light while pedestrian activity is heavy. Two pedestrians are in the middle of the road ahead crossing from right to left in front of the ego lane, one carrying a backpack and wearing a white T-shirt, and they constrain the vehicle's pace. More pedestrians walk ahead along both sides and intermittently cross near the center, keeping the path busy. A silver SUV stops at the left curb just ahead, protruding slightly into the ego lane and narrowing the passage. Orange cones line the right edge farther ahead, further reducing usable width.", "hazard_reasoning": "There are two pedestrians, one who is carrying a backpack and wearing a white t-shirt, in the middle of the road, crossing the street, from the right side of the road to the left side. The driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_04788", "split": "train", "clip_key": "2020-0204-150838_018827_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "018827"}, "frames": ["2020-0204-150838_018827_movie_t-3.jpg", "2020-0204-150838_018827_movie_t-2.jpg", "2020-0204-150838_018827_movie_t-1.jpg", "2020-0204-150838_018827_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided boulevard with smooth pavement and a planted median carries moderate same-direction traffic, with no visible oncoming lanes. A white van ahead in the ego lane drives steadily away from the camera, maintaining the flow and lightly constraining the ego car's pace. On the far left, a black sedan is pulled over at the curb line and appears stationary beside the hedge, remaining outside the ego vehicle's path. In the adjacent right lane, a dark SUV draws alongside and then edges ahead while continuing straight. No salient signals or speed signs are visible.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. The van may change speed or maneuver unexpectedly, so maintain awareness of its position."}
{"id": "train_04789", "split": "train", "clip_key": "2020-0220-102630_035019_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "035019"}, "frames": ["2020-0220-102630_035019_movie_t-3.jpg", "2020-0220-102630_035019_movie_t-2.jpg", "2020-0220-102630_035019_movie_t-1.jpg", "2020-0220-102630_035019_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two lanes per direction and no median has dry pavement and moderate traffic; vehicles in our direction queue at a signal while oncoming flow continues on the far right. A yellow sedan is stopped directly ahead in the ego lane, holding our position. A large white truck in the adjacent right lane creeps forward past the sedan toward the intersection, partially blocking the right-side view. Several pedestrians wait on the left sidewalk near the crosswalk at the corner. The traffic signal ahead shows red, and roadside signs on the left indicate no stopping or parking.", "hazard_reasoning": "There is a yellow sedan stopped in front of the ego car, in the ego lane. The yellow sedan ahead has stopped in the ego lane, blocking the path and requiring immediate braking to prevent a rear-end collision."}
{"id": "train_04790", "split": "train", "clip_key": "titan_clip_499_000390_movie", "source": {"subset": "titan", "scenario": "clip_499", "frame": "000390"}, "frames": ["titan_clip_499_000390_movie_t-3.jpg", "titan_clip_499_000390_movie_t-2.jpg", "titan_clip_499_000390_movie_t-1.jpg", "titan_clip_499_000390_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van", "environment_perception": "A narrow one-lane-per-direction urban street with cobblestone paving and no median stretches between mid-rise buildings, and traffic remains light. Ahead in the opposite lane on the right, a small white van approaches slowly near the centerline as it threads through limited space, rather than being parked on the left. On the near right curb, a large flatbed truck is parked while a worker on its bed handles boxes, creating a roadside obstruction that narrows the corridor. On the left sidewalk, a person stands by a doorway near the curb but stays off the road.", "hazard_reasoning": "There is a white van parked on the left side of the road. It partially obstructs the sidewalk and may conceal pedestrians or obstacles, so the driver should carefully manoeuvre around it to maintain safety."}
{"id": "train_04791", "split": "train", "clip_key": "2020-0217-110854_001371_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "001371"}, "frames": ["2020-0217-110854_001371_movie_t-3.jpg", "2020-0217-110854_001371_movie_t-2.jpg", "2020-0217-110854_001371_movie_t-1.jpg", "2020-0217-110854_001371_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "In a dense urban shopping street, the ego-vehicle is on a narrow multi-lane road with same-direction traffic, curbs, and damp pavement; traffic is heavy and mostly stopped. A white sedan is stopped directly ahead in the ego lane because congestion blocks the way, holding the ego-vehicle. To the left, a large box truck in the adjacent lane is also stopped, limiting any chance to change lanes. A red delivery motorcycle filters forward along the left edge between the truck and the curb, likely to move ahead of the queue. Bright cones line the right curb, narrowing the margin.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of traffic congestion ahead. The stopped sedan due to congestion poses a risk of rear-end collision if the driver does not stop promptly."}
{"id": "train_04792", "split": "train", "clip_key": "2020-0205-103411_057058_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "057058"}, "frames": ["2020-0205-103411_057058_movie_t-3.jpg", "2020-0205-103411_057058_movie_t-2.jpg", "2020-0205-103411_057058_movie_t-1.jpg", "2020-0205-103411_057058_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a raised hedge median and smooth pavement stretches ahead, and traffic moves at a moderate pace with brief slowdowns. A white box truck directly ahead in the ego lane slows because of traffic congestion ahead, limiting the ego car's progress. To its left, a dark sedan runs slightly ahead in the adjacent lane and continues straight without merging into the ego lane. Beyond the median on the right, opposing traffic proceeds separately along the far carriageway. An overhead signal facing the ego direction shows green as vehicles pass through the intersection area.", "hazard_reasoning": "There is a white truck slowing in the ego-car lane, because of traffic congestion ahead. You should slow down to maintain a safe distance and avoid a rear-end collision under the slowing traffic conditions."}
{"id": "train_04793", "split": "train", "clip_key": "titan_clip_1360_000114_movie", "source": {"subset": "titan", "scenario": "clip_1360", "frame": "000114"}, "frames": ["titan_clip_1360_000114_movie_t-3.jpg", "titan_clip_1360_000114_movie_t-2.jpg", "titan_clip_1360_000114_movie_t-1.jpg", "titan_clip_1360_000114_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian movements", "environment_perception": "An urban back street with closely spaced shops appears, a narrow two-way road without a centerline, patched and worn, with light traffic. The ego vehicle proceeds along the left side at low speed. Far ahead, a white van approaches slowly in the middle of the roadway as oncoming traffic, narrowing the available space. On the near left edge, a pedestrian wearing a white dress and carrying a backpack walks away from the ego car along the curb, close to the travel lane. No traffic signals or posted speed signs are visible, and storefront signboards and displays sit near the sidewalks without intruding into the lane.", "hazard_reasoning": "There is a pedestrian wearing a white dress, carrying a backpack, walking on the left side of the road away from the ego car. The pedestrian could unpredictably step into the vehicle's path due to the obstruction and wet patches, so the driver should be cautious."}
{"id": "train_04794", "split": "train", "clip_key": "titan_clip_1196_000336_movie", "source": {"subset": "titan", "scenario": "clip_1196", "frame": "000336"}, "frames": ["titan_clip_1196_000336_movie_t-3.jpg", "titan_clip_1196_000336_movie_t-2.jpg", "titan_clip_1196_000336_movie_t-1.jpg", "titan_clip_1196_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow single shared lane and block-paved surface runs between shopfronts; there is no divider and no other vehicles visible, so traffic is light but movement is slow due to pedestrians. Ahead in the middle of the road, a pedestrian dragging a suitcase is walking away from the ego car, occupying the center of the lane and constraining the vehicle's pace. Slightly right of center, two pedestrians also walk away in the same direction close to the travel path, reducing clearance. More pedestrians line both sides near the storefronts and walk along the edges, some edging toward the roadway and may enter the ego lane.", "hazard_reasoning": "A pedestrian dragging a suitcase is walking in the middle of the road, away from the ego car. The pedestrian's position obstructs the vehicle's path and requires slowing down to avoid a collision."}
{"id": "train_04795", "split": "train", "clip_key": "2020-0131-135401_011969_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "011969"}, "frames": ["2020-0131-135401_011969_movie_t-3.jpg", "2020-0131-135401_011969_movie_t-2.jpg", "2020-0131-135401_011969_movie_t-1.jpg", "2020-0131-135401_011969_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane in each direction, divided by a yellow center line, has smooth pavement and light traffic. A gray dump truck ahead in the ego lane accelerates through the intersection under a green light, leading the ego car and setting its pace. A black sedan in the opposing lane approaches and continues straight through the junction without conflict. Another oncoming van travels near the right curb toward the camera while remaining in its lane. The signal for the ego direction is green, and a marked bicycle lane lines the left curb.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04796", "split": "train", "clip_key": "2020-0131-103016_077374_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "077374"}, "frames": ["2020-0131-103016_077374_movie_t-3.jpg", "2020-0131-103016_077374_movie_t-2.jpg", "2020-0131-103016_077374_movie_t-1.jpg", "2020-0131-103016_077374_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban multilane arterial approaches a signalized intersection with three lanes in the ego vehicle's direction and smooth pavement; traffic is queued, so flow is momentarily stopped. A white minivan directly ahead in the ego lane is stopped at the stop line because the overhead signal shows red, and it sets the ego car's pace. In the adjacent left lane, a box truck waits level with the ego car, holding position for the same light. In the right lane, a silver microvan stands slightly ahead, also waiting and potentially proceeding straight when the light changes. Overhead blue guide signs and the red traffic signal are clearly visible.", "hazard_reasoning": "There is a white minivan stopped in the ego lane in front of the ego car, because of a red traffic light. The driver must stop immediately to avoid colliding with the stationary minivan at the red light."}
{"id": "train_04797", "split": "train", "clip_key": "2020-0207-151349_081356_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "081356"}, "frames": ["2020-0207-151349_081356_movie_t-3.jpg", "2020-0207-151349_081356_movie_t-2.jpg", "2020-0207-151349_081356_movie_t-1.jpg", "2020-0207-151349_081356_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated structure with two same-direction lanes, right-side guardrails, and smooth pavement; traffic is moderate and moves steadily through the junction. A white box truck ahead in the ego lane drives away from the ego car as it continues straight, increasing the gap. A dark sedan slightly ahead to the left proceeds straight in the adjacent lane at a similar speed, remaining parallel without merging. Farther ahead, several cars continue in both lanes and set a steady flow. Along the right beyond the barrier, vans and a truck appear parked in a side bay and do not interact. The overhead signal shows a green straight arrow, permitting through movement.", "hazard_reasoning": "The white truck is driving away from the ego car in the ego lane. With parked trucks obstructing the view on the right, the driver should follow the vehicle ahead to maintain visibility and reaction time."}
{"id": "train_04798", "split": "train", "clip_key": "titan_clip_972_000042_movie", "source": {"subset": "titan", "scenario": "clip_972", "frame": "000042"}, "frames": ["titan_clip_972_000042_movie_t-3.jpg", "titan_clip_972_000042_movie_t-2.jpg", "titan_clip_972_000042_movie_t-1.jpg", "titan_clip_972_000042_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban scene shows a narrow two-way road with no median, rough patched pavement, and light vehicle flow but heavy pedestrian activity as the route approaches a railway level crossing. A white truck ahead in the same direction moves away toward an underpass beyond the tracks, not impeding the ego lane. On the right side, a pedestrian wearing a blue skirt and carrying a backpack walks away along the curb, remaining near the roadway edge. Several other pedestrians cross and merge near the tracks from both sides, some stepping into the ego lane as they head toward the station area ahead. A railway crossbuck and signal masts mark the crossing where the rails cut diagonally across the road. No oncoming vehicles are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue skirt and carrying a backpack, walking on the right side of the road, away from the ego car. The pedestrian may change direction or step into the lane suddenly, so the driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_04799", "split": "train", "clip_key": "2020-0226-140503_024282_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "024282"}, "frames": ["2020-0226-140503_024282_movie_t-3.jpg", "2020-0226-140503_024282_movie_t-2.jpg", "2020-0226-140503_024282_movie_t-1.jpg", "2020-0226-140503_024282_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane in each direction and a solid yellow centerline runs between mid-rise buildings; the pavement is clean and dry, and traffic is moderate but halted at an intersection. A black sedan directly ahead in the ego lane is stopped because the overhead signal is red, holding the ego vehicle. Farther ahead in the same lane, a silver car and a white van wait in a short queue near the junction, continuing to block forward movement. A pedestrian stands on the left sidewalk by the curb, stationary and not entering the roadway. The signal over the intersection shows red, and an overhead sign indicates straight ahead only.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of a red traffic light. You should stop to avoid a collision and comply with the traffic signal under this situation."}
{"id": "train_04800", "split": "train", "clip_key": "2020-0221-115122_030754_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "030754"}, "frames": ["2020-0221-115122_030754_movie_t-3.jpg", "2020-0221-115122_030754_movie_t-2.jpg", "2020-0221-115122_030754_movie_t-1.jpg", "2020-0221-115122_030754_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with a guardrail on the right and smooth pavement; traffic is moderate and slow-moving. Ahead in the ego lane, a white hatchback slows as a white minivan from the lane to its left cuts in ahead of it, briefly constraining our pace. To the right, a small flatbed truck travels slightly ahead in its lane at a steady speed without merging. Farther ahead beneath the structure, a large box truck proceeds in the middle lanes at low speed with the general flow. No other salient signs or hazards are visible.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car, in the ego lane, because of a minivan cutting in ahead of it. The driver should slow down to avoid a collision."}
{"id": "train_04801", "split": "train", "clip_key": "titan_clip_1178_000570_movie", "source": {"subset": "titan", "scenario": "clip_1178", "frame": "000570"}, "frames": ["titan_clip_1178_000570_movie_t-3.jpg", "titan_clip_1178_000570_movie_t-2.jpg", "titan_clip_1178_000570_movie_t-1.jpg", "titan_clip_1178_000570_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban intersection appears on a narrow two-way street with no median, smooth but worn asphalt, and light traffic; the ego vehicle waits in the left lane at a zebra crossing amid shops and trees. A male pedestrian in a white shirt and black pants carrying a backpack crosses from right to left directly ahead on the crosswalk with the walk signal, so the ego remains stopped. A small group of pedestrians ahead also moves leftward across the markings, continuing to occupy the ego lane and governing its pace. A white refuse truck stands stationary at the curb to the right just beyond the crosswalk, partly obscuring the view of the far side. The pedestrian signal above the crossing shows green; no vehicle signal is visible.", "hazard_reasoning": "There is a male pedestrian wearing a white shirt, black pants, carrying a backpack, and crossing the road from right to left, because there is a crossing light at a pedestrian crossing. The stopped van obstructs sightlines, so the driver should slow down to anticipate pedestrian movements."}
{"id": "train_04802", "split": "train", "clip_key": "2020-0210-101957_048287_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "048287"}, "frames": ["2020-0210-101957_048287_movie_t-3.jpg", "2020-0210-101957_048287_movie_t-2.jpg", "2020-0210-101957_048287_movie_t-1.jpg", "2020-0210-101957_048287_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with no physical median runs under an elevated roadway; the pavement is dry and in good condition, and traffic is moderate but momentarily halted by a red signal ahead. A black mid-size SUV directly ahead in the ego lane is stopped at the red light, holding the ego vehicle. To its left, a red compact car in the adjacent lane slows to a stop near the same line, remaining parallel to the SUV. In the right lane, a white sedan farther ahead approaches the intersection at low speed while keeping its lane. No obstacles or work zones are visible.", "hazard_reasoning": "A black mid-SUV is stopped in front of the ego car in the ego lane because the light is red. The driver should stop to maintain a safe following distance and avoid a collision."}
{"id": "train_04803", "split": "train", "clip_key": "titan_clip_914_000492_movie", "source": {"subset": "titan", "scenario": "clip_914", "frame": "000492"}, "frames": ["titan_clip_914_000492_movie_t-3.jpg", "titan_clip_914_000492_movie_t-2.jpg", "titan_clip_914_000492_movie_t-1.jpg", "titan_clip_914_000492_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian.", "environment_perception": "An urban side street with a single narrow lane and edge lines curves gently right between close buildings; the pavement is smooth and traffic is light. A pedestrian on the left side of the road walks away from the ego vehicle along the lane edge, close to the travel path. A red scooter ahead near the left curb moves slowly away toward the bend, constraining the ego vehicle's pace. Another pedestrian on the right stands by the wall and does not enter the lane. Parked bicycles line the left sidewalk, and the rightward bend and building walls reduce sight lines.", "hazard_reasoning": "There is a pedestrian wearing a black dress and walking away from the ego car, on the left side of the road. The pedestrian could step into the lane unexpectedly, so the driver should be cautious."}
{"id": "train_04804", "split": "train", "clip_key": "titan_clip_47_000324_movie", "source": {"subset": "titan", "scenario": "clip_47", "frame": "000324"}, "frames": ["titan_clip_47_000324_movie_t-3.jpg", "titan_clip_47_000324_movie_t-2.jpg", "titan_clip_47_000324_movie_t-1.jpg", "titan_clip_47_000324_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban backstreet with single narrow lanes in each direction lacks a median and has smooth pavement with green shoulders; traffic is light with no same-direction vehicles nearby. Two pedestrians on the right edge walk toward the camera partially in the roadway, reducing the usable width. A pedestrian wearing a black dress stands ahead on the left side by the curb and may step into the ego lane. A small vehicle is far ahead in the opposite direction and continues along the street without interaction. Construction cones and a wrapped building line the left, and a parked scooter intrudes slightly from the shoulder, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a black dress, standing on the left side of the road. The driver should carefully manoeuvre around the pedestrian to maintain a safe distance and avoid a collision."}
{"id": "train_04805", "split": "train", "clip_key": "titan_clip_1106_000510_movie", "source": {"subset": "titan", "scenario": "clip_1106", "frame": "000510"}, "frames": ["titan_clip_1106_000510_movie_t-3.jpg", "titan_clip_1106_000510_movie_t-2.jpg", "titan_clip_1106_000510_movie_t-1.jpg", "titan_clip_1106_000510_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the man crossing ahead", "environment_perception": "An urban street in Japan with midrise buildings has a single lane in each direction and no median, with clean pavement and light traffic. Far ahead in the same direction, a white van continues along the ego lane, and no oncoming vehicles are visible. On the right at the near-side intersection, a pedestrian in a white shirt and black pants steps off the curb and begins crossing from right to left, potentially entering the ego lane. At the left edge near the camera, a dark car sits at the curb with its front slightly into the roadway. A do-not-enter sign marks the right-side side street, and a 30 speed marking is painted on the road.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, and crossing the road from right to left, on the right side of the intersection. The driver should be aware because the pedestrian may continue into the vehicle's path."}
{"id": "train_04806", "split": "train", "clip_key": "2020-0210-142719_002035_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "002035"}, "frames": ["2020-0210-142719_002035_movie_t-3.jpg", "2020-0210-142719_002035_movie_t-2.jpg", "2020-0210-142719_002035_movie_t-1.jpg", "2020-0210-142719_002035_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "An urban two-way commercial street with one lane each direction, no median, and smooth pavement; traffic is moderate with steady movement both ways. A bicyclist rides ahead slightly left of the ego-lane center, continuing straight and effectively setting the ego vehicle's pace. An oncoming white van proceeds toward the camera in its lane, passing by and limiting any opportunity to go around the bicycle. There is a black van parked on the left side of the road near the curb, occupying curbside space as the ego approaches. Shops line both sides with railings along the sidewalks, and no salient signals or posted speeds are visible.", "hazard_reasoning": "There is a black van parked on the left side of the road. The parked van narrows the lane and could obstruct the vehicle's path, so the driver should carefully manoeuvre around it to maintain safe clearance."}
{"id": "train_04807", "split": "train", "clip_key": "2020-0228-150133_015166_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "015166"}, "frames": ["2020-0228-150133_015166_movie_t-3.jpg", "2020-0228-150133_015166_movie_t-2.jpg", "2020-0228-150133_015166_movie_t-1.jpg", "2020-0228-150133_015166_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road with one lane per direction and no median runs between apartment buildings; the pavement is dry and traffic in the left, same-direction lane is halted while no oncoming vehicles are visible. A silver van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego car in place. A large box truck is stationary along the left curb beside the van, its body encroaching into the lane and narrowing the passage. A zebra crosswalk is just beyond the van, with guardrails lining the right edge.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop because the vehicle ahead is stationary due to congestion, preventing a rear-end collision."}
{"id": "train_04808", "split": "train", "clip_key": "2020-0203-114632_007520_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "007520"}, "frames": ["2020-0203-114632_007520_movie_t-3.jpg", "2020-0203-114632_007520_movie_t-2.jpg", "2020-0203-114632_007520_movie_t-1.jpg", "2020-0203-114632_007520_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A quiet urban two-way street with single lanes and no median stretches ahead, the pavement dry and slightly worn, and overall traffic is light. A white van drives in front of the ego vehicle in the ego lane, proceeding straight at a modest pace and effectively setting the car's speed. An overhead speed sign shows 40. Parked vehicles line the curbs, including a black car on the left and a truck farther ahead on the right, slightly narrowing the corridor but not obstructing the lane.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane. The cones on the right curb signal road construction, so following the van will guide you safely past the construction area."}
{"id": "train_04809", "split": "train", "clip_key": "titan_clip_1015_000246_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1015_000246_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1015_000246_movie_t-3_augB1.jpg", "titan_clip_1015_000246_movie_t-2_augB1.jpg", "titan_clip_1015_000246_movie_t-1_augB1.jpg", "titan_clip_1015_000246_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down and yield to pedestrian", "environment_perception": "An urban shopping street with a single undivided lane passes between storefronts; the pavement is smooth and bollards separate the roadway from the sidewalks. Motor traffic is absent while pedestrian activity is heavy. Directly ahead of the ego vehicle, a man wearing brown shorts, a blue shirt, and white shoes crosses the lane from left to right, occupying the path and constraining the vehicle's pace. Farther ahead, several pedestrians move diagonally across the roadway near the center, with some continuing into the lane the ego is taking. On the right foreground, a backpacked person steps off the sidewalk and then pauses at the edge, positioned to enter the lane. No signals or posted speed signs are prominent.", "hazard_reasoning": "There is a man wearing brown shorts, a blue shirt, and white shoes, crossing the street, in front of the ego car. The pedestrian is entering the vehicle's path directly, so the driver should slow down to avoid a potential collision."}
{"id": "train_04810", "split": "train", "clip_key": "2020-0227-104226_081432_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "081432"}, "frames": ["2020-0227-104226_081432_movie_t-3.jpg", "2020-0227-104226_081432_movie_t-2.jpg", "2020-0227-104226_081432_movie_t-1.jpg", "2020-0227-104226_081432_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road with good pavement runs through a corridor of low buildings, and only same-direction traffic is visible; overall flow is heavy and slow. Ahead in the ego lane, a black SUV slows in a queue because a truck is slowing farther ahead, and it constrains the ego car's pace. Farther up the same lane, a large box truck decelerates and compresses traffic, setting the pace for vehicles behind. To the right, a line of large trucks creeps forward alongside the ego vehicle with minimal gaps, limiting lane changes. Warning characters are painted on the road surface.", "hazard_reasoning": "There is a black SUV slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The black SUV and the truck ahead are reducing speed, so the driver should slow down to maintain a safe following distance."}
{"id": "train_04811", "split": "train", "clip_key": "2020-0225-145150_034078_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "034078"}, "frames": ["2020-0225-145150_034078_movie_t-3.jpg", "2020-0225-145150_034078_movie_t-2.jpg", "2020-0225-145150_034078_movie_t-1.jpg", "2020-0225-145150_034078_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial with three same-direction lanes and painted dividers has smooth pavement and heavy, slow traffic approaching a signalized intersection ahead. Directly ahead in the ego lane, a blue mini truck slows into the growing queue because of congestion, constraining the ego vehicle's pace. In the adjacent left lane slightly ahead, a white kei van also reduces speed toward the same queue while remaining near the lane center beside the ego car. To the right, another white van in the rightmost lane creeps toward the junction and stays separate from the ego lane.", "hazard_reasoning": "There is a blue minivan slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. You should follow the vehicle ahead to maintain a safe distance and adapt to reduced speed in congestion."}
{"id": "train_04812", "split": "train", "clip_key": "titan_clip_165_000318_movie", "source": {"subset": "titan", "scenario": "clip_165", "frame": "000318"}, "frames": ["titan_clip_165_000318_movie_t-3.jpg", "titan_clip_165_000318_movie_t-2.jpg", "titan_clip_165_000318_movie_t-1.jpg", "titan_clip_165_000318_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with a zebra crosswalk runs between mid-rise buildings; there is no median or center line, the pavement is smooth, and traffic is light. On the right side near the crosswalk, an oncoming cyclist approaches and passes the ego vehicle along the curb, using the opposing side of the narrow roadway. At the left edge of the crosswalk, a man in beige clothing holding a paper bag waits to cross toward the right, positioned at the curb ahead. Farther ahead in the same direction, another cyclist rides away near the lane center, sharing the narrow path with the ego vehicle. A pedestrian crossing sign stands on the left, and a scooter is parked at the left curb.", "hazard_reasoning": "There is a man wearing beige clothing, holding a paper bag, and waiting to cross at the left side of a crosswalk towards the right side. The driver must stop to yield to the crossing pedestrian and avoid a collision."}
{"id": "train_04813", "split": "train", "clip_key": "2020-0204-150838_016798_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "016798"}, "frames": ["2020-0204-150838_016798_movie_t-3.jpg", "2020-0204-150838_016798_movie_t-2.jpg", "2020-0204-150838_016798_movie_t-1.jpg", "2020-0204-150838_016798_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane boulevard with smooth, dry pavement and a hedge divider carries heavy same-direction traffic queuing at an intersection. Directly ahead in the ego lane, a white van is stopped at a red light and holds the ego vehicle at a standstill. In the lane to the right, a white wagon edges forward slowly beside the ego car, maintaining its lane while advancing toward the line of stopped vehicles. In the lane to the left ahead, a black minivan also waits in the queue, moving minimally with the signal cycle and not entering the ego path. Overhead blue direction boards indicate lane use with arrows toward Nihonbashi for a left turn and straight-ahead routes for Hibiya, Akabanebashi, and Sakuradamon.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. You must stop to avoid colliding with the stationary van at the red light."}
{"id": "train_04814", "split": "train", "clip_key": "2020-0204-150838_034278_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_034278_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_034278_movie_t-3_augB1.jpg", "2020-0204-150838_034278_movie_t-2_augB1.jpg", "2020-0204-150838_034278_movie_t-1_augB1.jpg", "2020-0204-150838_034278_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection with no median and dry, worn pavement appears, and overall traffic moves slowly in queues near the junction. A white microvan directly ahead in the ego lane slows and creeps forward because congestion builds through the intersection, constraining the ego vehicle's pace. To the right, another white van in the adjacent same-direction lane advances slowly alongside, keeping pace with the queue. Farther ahead-left, a smaller white van moves slowly within the same queue. Several pedestrians stand at the edges of the crosswalks on both sides, waiting on the sidewalks and not entering the roadway.", "hazard_reasoning": "A white van slowing down in front of the ego car because of the traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a collision."}
{"id": "train_04815", "split": "train", "clip_key": "titan_clip_925_000174_movie", "source": {"subset": "titan", "scenario": "clip_925", "frame": "000174"}, "frames": ["titan_clip_925_000174_movie_t-3.jpg", "titan_clip_925_000174_movie_t-2.jpg", "titan_clip_925_000174_movie_t-1.jpg", "titan_clip_925_000174_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on the roadside", "environment_perception": "A narrow urban shopping street with smooth pavement and no marked centerline is shown, with light same-direction traffic along a single undivided carriageway. A white van ahead in the ego path travels slowly close to the left curb, constraining the car's approach. Farther ahead, another small van continues in the same direction, forming a short queue of slow vehicles. On the left edge of the roadway, a pedestrian wearing a white shirt and white pants and carrying a backpack walks away from the ego car along the curb, near the travel lane. Parked vehicles line the left side.", "hazard_reasoning": "A pedestrian wearing a white shirt, white pants, and carrying a backpack is walking on the left side of the road, away from the ego car. Since the pedestrian is close to the travel lane and their path may change unexpectedly, the driver should be aware of the pedestrian on the roadside to ensure safe passage."}
{"id": "train_04816", "split": "train", "clip_key": "titan_clip_1308_000354_movie", "source": {"subset": "titan", "scenario": "clip_1308", "frame": "000354"}, "frames": ["titan_clip_1308_000354_movie_t-3.jpg", "titan_clip_1308_000354_movie_t-2.jpg", "titan_clip_1308_000354_movie_t-1.jpg", "titan_clip_1308_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrians ahead", "environment_perception": "A narrow two-way urban shopping street has good pavement and no median, and overall traffic is light and slow-moving. Two pedestrians ahead in the middle of the road walk away from the ego car carrying handbags, occupying the path and setting a slow pace. Another pedestrian ahead-right pulls a suitcase while walking in the lane and remains in the ego vehicle's path. A small white van further ahead in the same direction slows behind the pedestrians, constraining traffic. Parked delivery trucks line both curbs and narrow the passage.", "hazard_reasoning": "There are two pedestrians carrying a handbag and walking in the middle of the road, away from the ego car. The driver should yield to pedestrians as they are crossing within the vehicle's path and may not move aside."}
{"id": "train_04817", "split": "train", "clip_key": "2020-0225-145150_041099_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "041099"}, "frames": ["2020-0225-145150_041099_movie_t-3.jpg", "2020-0225-145150_041099_movie_t-2.jpg", "2020-0225-145150_041099_movie_t-1.jpg", "2020-0225-145150_041099_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road approaches a crosswalked intersection; the pavement looks smooth and traffic is heavy with stop-and-go flow. A blue mini truck directly ahead in the ego lane is stopped because congestion blocks the way, holding the ego vehicle in the queue. In the adjacent lane to the left, vehicles including a large white box truck roll forward through the intersection, slowly passing the stopped line and pacing traffic beside the ego. A silver van alongside on the far left edges ahead next to the ego vehicle, which may limit an immediate lane change.", "hazard_reasoning": "There is a blue van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle ahead."}
{"id": "train_04818", "split": "train", "clip_key": "2020-0217-144444_013989_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "013989"}, "frames": ["2020-0217-144444_013989_movie_t-3.jpg", "2020-0217-144444_013989_movie_t-2.jpg", "2020-0217-144444_013989_movie_t-1.jpg", "2020-0217-144444_013989_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane in each direction curves gently right beside a fenced sidewalk; pavement is dry and intact, and traffic is moderate with a brief slowdown near a narrowing. A black hatchback directly ahead in the ego lane slows because a vehicle farther ahead is also slowing, and it sets the ego car's pace. An oncoming silver wagon approaches in the opposite lane near the center line and continues past without deviating. Farther ahead in our lane, additional cars queue through the bend, contributing to the reduced speed. A circular 30 speed-limit sign stands on the left. A temporary white construction wall on the left narrows the shoulder but the travel lane remains open.", "hazard_reasoning": "A black hatchback slowing down in front of the ego car, in the ego lane because of the vehicle slowing ahead. The driver should reduce speed to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_04819", "split": "train", "clip_key": "2020-0220-151845_060363_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "060363"}, "frames": ["2020-0220-151845_060363_movie_t-3.jpg", "2020-0220-151845_060363_movie_t-2.jpg", "2020-0220-151845_060363_movie_t-1.jpg", "2020-0220-151845_060363_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An enclosed urban expressway with two same-direction lanes runs under an elevated structure, bounded by concrete barriers and sound walls; the pavement is smooth and overall flow is moderate but easing to slower speeds. Ahead in the ego lane, a covered flatbed truck reduces speed because vehicles queue further up, constraining the ego car's pace. Slightly farther ahead in the adjacent right lane, a dark van also slows in the same queue and stays roughly alongside, limiting opportunities to change lanes. Farther forward, several cars in both lanes bunch up and decelerate, forming a short line of congestion.", "hazard_reasoning": "There is a red truck slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced traffic flow."}
{"id": "train_04820", "split": "train", "clip_key": "titan_clip_662_000528_movie", "source": {"subset": "titan", "scenario": "clip_662", "frame": "000528"}, "frames": ["titan_clip_662_000528_movie_t-3.jpg", "titan_clip_662_000528_movie_t-2.jpg", "titan_clip_662_000528_movie_t-1.jpg", "titan_clip_662_000528_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian on the right side.", "environment_perception": "An urban, narrow two-way road with no center line and smooth asphalt climbs gently, and traffic is light with one moving vehicle visible; there is no divider. A white car ahead in the same direction travels uphill away near the center of the roadway. On the right edge, a pedestrian wearing black pants walks away from the ego car along the curb, close to the travel lane. Farther ahead on the same side, another pedestrian continues uphill beside the storefronts near the road edge. A parked silver van on the left curb intrudes slightly into the roadway, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing black pants and walking on the right side of the road, away from the ego car. The pedestrian's lateral movement near the curve may lead to unexpected entry into the vehicle's path, so the driver should remain vigilant."}
{"id": "train_04821", "split": "train", "clip_key": "2020-0204-103442_072567_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "072567"}, "frames": ["2020-0204-103442_072567_movie_t-3.jpg", "2020-0204-103442_072567_movie_t-2.jpg", "2020-0204-103442_072567_movie_t-1.jpg", "2020-0204-103442_072567_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the white van", "environment_perception": "An urban two-way street with one lane each direction and no median approaches an intersection with zebra crossings; the pavement is worn but serviceable and traffic is light to moderate. In the oncoming right lane, a white van with red stripes drives toward the camera through the intersection, passing close to the ego vehicle's path. Ahead in the ego lane, a black passenger car proceeds straight and loosely sets the pace. Another white car follows the van in the oncoming lane. Parked vehicles line the curbs near the shops but remain outside the travel lanes.", "hazard_reasoning": "There is a white van with red stripes driving in the right lane towards the ego car. The white van may merge or close the gap unexpectedly, so the driver should remain alert and be prepared to adjust speed."}
{"id": "train_04822", "split": "train", "clip_key": "titan_clip_605_000084_movie", "source": {"subset": "titan", "scenario": "clip_605", "frame": "000084"}, "frames": ["titan_clip_605_000084_movie_t-3.jpg", "titan_clip_605_000084_movie_t-2.jpg", "titan_clip_605_000084_movie_t-1.jpg", "titan_clip_605_000084_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked sedan.", "environment_perception": "An urban neighborhood street with shops on the right and trees on the left appears as a narrow single-lane road with smooth pavement and light traffic. Ahead, a black sedan is parked along the left side in front of the ego-car, slightly encroaching into the lane and creating a fixed obstruction. Two pedestrians are ahead near the right edge of the roadway, walking away in the same direction and reducing the available space next to the guardrail, so they may constrain the ego vehicle's pace. Additional pedestrians move along the right sidewalk behind the guardrail, separated from the lane. A cone and small fence line the left sidewalk.", "hazard_reasoning": "There is a black sedan parked on the left side of the road in front of the ego-car. The parked vehicle narrows the available driving space and may force the driver to swerve, so the driver should manoeuvre carefully to avoid collision."}
{"id": "train_04823", "split": "train", "clip_key": "2020-0213-143552_007933_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "007933"}, "frames": ["2020-0213-143552_007933_movie_t-3.jpg", "2020-0213-143552_007933_movie_t-2.jpg", "2020-0213-143552_007933_movie_t-1.jpg", "2020-0213-143552_007933_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with multiple same-direction lanes and a right-turn bay has dry, smooth pavement and light traffic moving freely. A white van ahead in the ego lane continues straight at a steady pace, loosely setting the speed. Farther ahead slightly left of center, a black sedan is merging from a hidden intersection on the left side toward the ego lane. Oncoming vehicles pass steadily on the far side of the roadway. Several cars are parked along the right curb near the turn bay. Overhead lane signals are visible at the upcoming intersection.", "hazard_reasoning": "There's a black sedan driving towards the ego lane, because it is merging from a hidden intersection on the left side of the road. The sedan may enter your lane unexpectedly, so you should slow down to allow it to merge safely."}
{"id": "train_04824", "split": "train", "clip_key": "titan_clip_928_000576_movie", "source": {"subset": "titan", "scenario": "clip_928", "frame": "000576"}, "frames": ["titan_clip_928_000576_movie_t-3.jpg", "titan_clip_928_000576_movie_t-2.jpg", "titan_clip_928_000576_movie_t-1.jpg", "titan_clip_928_000576_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way street with one lane each way and no median runs between buildings, the fresh asphalt looking smooth and clean, and traffic is light as the ego car approaches a small intersection. A black kei van ahead in the same direction moves steadily toward the cross street and continues through the marked pedestrian crossing. On the left, a black sedan sits parked in a curb bay and does not intrude into the lane. On the right side near the curb, a pedestrian pushing a trolley walks toward the ego vehicle and is close enough to the edge that they could enter the travel lane. Construction sheeting along the right fa?ade constrains the sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a red t-shirt, pushing a trolley, walking on the right side of the road, towards the ego car. The pedestrian's movement toward the roadway could lead to an unexpected crossing, so the driver must manoeuvre carefully to avoid collision."}
{"id": "train_04825", "split": "train", "clip_key": "2020-0221-115122_031139_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "031139"}, "frames": ["2020-0221-115122_031139_movie_t-3.jpg", "2020-0221-115122_031139_movie_t-2.jpg", "2020-0221-115122_031139_movie_t-1.jpg", "2020-0221-115122_031139_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to the merging sedan", "environment_perception": "An urban multi-lane divided road runs under an elevated expressway, the pavement dry and smooth, with moderate, slow-moving same-direction traffic. A white hatchback directly ahead in the ego lane proceeds steadily and sets the pace. From the left lane, a black sedan changes into the ego lane in front of the ego car, reducing the available gap. On the right beside a guardrail, a white van in the adjacent lane moves forward and then edges left as the lane tapers toward the ego lane.", "hazard_reasoning": "There's a black sedan lane changing, in front of the ego car, from the left lane, to the ego lane. The driver should yield to the merging sedan to avoid a potential sideswipe collision as it encroaches on your lane."}
{"id": "train_04826", "split": "train", "clip_key": "2020-0218-103119_001800_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "001800"}, "frames": ["2020-0218-103119_001800_movie_t-3.jpg", "2020-0218-103119_001800_movie_t-2.jpg", "2020-0218-103119_001800_movie_t-1.jpg", "2020-0218-103119_001800_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road lined with tall buildings has smooth pavement and moderate flow that eases near an intersection. A white van directly ahead in the ego lane signals a right turn and slows to a stop, yielding to oncoming cars before turning, which constrains the ego vehicle's pace. Another small white van ahead-left in the adjacent lane continues straight and pulls slightly ahead without slowing. A silver sedan ahead-right in the next lane proceeds straight at a steady speed, passing the slowing vehicles and narrowing the available gap. A side street opens on the right with a visible crosswalk and clear curbside space.", "hazard_reasoning": "There is a white van in front of the ego car, indicating right, in the ego lane, yielding to oncoming cars. The van is yielding at a red traffic light, so the driver should stop to avoid entering the intersection on red and prevent a collision."}
{"id": "train_04827", "split": "train", "clip_key": "2020-0203-154554_080036_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "080036"}, "frames": ["2020-0203-154554_080036_movie_t-3.jpg", "2020-0203-154554_080036_movie_t-2.jpg", "2020-0203-154554_080036_movie_t-1.jpg", "2020-0203-154554_080036_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane street with a painted median and good pavement appears in stop-and-go conditions, while the oncoming lanes to the right look comparatively clear. A white sedan is stopped ahead in the ego lane due to congestion, holding the ego vehicle at a standstill. To the right of the ego lane, a black sedan alongside creeps forward in the adjacent lane, limiting room for a lane change. Farther ahead in the same direction, several vans queue tightly near the center of the road, continuing the bottleneck.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid colliding with the halted vehicle."}
{"id": "train_04828", "split": "train", "clip_key": "2020-0210-101957_029621_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "029621"}, "frames": ["2020-0210-101957_029621_movie_t-3.jpg", "2020-0210-101957_029621_movie_t-2.jpg", "2020-0210-101957_029621_movie_t-1.jpg", "2020-0210-101957_029621_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction and one oncoming lane, separated by a solid orange centerline, approaches a signalized intersection beneath an elevated roadway; the pavement is dry and traffic is halted at the light. A black van directly ahead in the ego lane is stopped for the red signal, holding the ego car. To the left, two small trucks in the adjacent same-direction lane are also stopped in line at the intersection. The oncoming lane to the right is empty near the junction. The overhead traffic signal facing the ego direction shows red.", "hazard_reasoning": "There is a black van stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid a rear-end collision caused by the halted vehicle."}
{"id": "train_04829", "split": "train", "clip_key": "2020-0225-102455_021720_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "021720"}, "frames": ["2020-0225-102455_021720_movie_t-3.jpg", "2020-0225-102455_021720_movie_t-2.jpg", "2020-0225-102455_021720_movie_t-1.jpg", "2020-0225-102455_021720_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "be cautious of lane-changing vehicle", "environment_perception": "An urban two-way street with a single narrow lane each way curves right; the pavement looks sound and traffic is heavy and slow. A silver sedan just ahead to the right is merging into the ego lane from the right and slowing. Farther ahead in the same lane a black minivan is stopped near the curve, contributing to the queue. In the oncoming lane to the right, several cars are lined up and mostly stationary. Two pedestrians stand on the right sidewalk beside the zebra crossing, waiting. A pedestrian crossing sign and no-stopping signs are posted on roadside poles.", "hazard_reasoning": "There is a silver sedan in front of the ego car, cutting in to the ego lane from the right hand side. The sedan's unexpected lane change could lead to a conflict, so the driver should be cautious in this situation."}
{"id": "train_04830", "split": "train", "clip_key": "2020-0228-150133_008105_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "008105"}, "frames": ["2020-0228-150133_008105_movie_t-3.jpg", "2020-0228-150133_008105_movie_t-2.jpg", "2020-0228-150133_008105_movie_t-1.jpg", "2020-0228-150133_008105_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the stopped vehicle.", "environment_perception": "An urban two-way street with one lane per direction and a solid orange centerline runs between mid-rise buildings; the pavement is intact and traffic is slow near a signalized intersection. A large white box truck directly ahead in the ego lane slows to a stop at the junction, constraining the ego vehicle's pace while waiting for the signal. At the left curb beside the ego car, a dark taxi is stopped near the edge of the lane and stays clear of the truck's path. On the right sidewalk by a side street, two cyclists ride past the corner without entering the roadway. Overhead traffic lights control the intersection ahead.", "hazard_reasoning": "There is a white SUV stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop to avoid a rear-end collision since the vehicle ahead is fully stopped at the red light."}
{"id": "train_04831", "split": "train", "clip_key": "titan_clip_331_000378_movie", "source": {"subset": "titan", "scenario": "clip_331", "frame": "000378"}, "frames": ["titan_clip_331_000378_movie_t-3.jpg", "titan_clip_331_000378_movie_t-2.jpg", "titan_clip_331_000378_movie_t-1.jpg", "titan_clip_331_000378_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian.", "environment_perception": "An urban shopping street with a narrow single shared lane of dry interlocking pavers has no divider, and there is no motor traffic; pedestrian flow is moderate. On the right edge close to the ego path, a pedestrian wearing white pants and a black shirt with a backpack walks away from the vehicle along the curb, reducing passing space. Ahead near the middle of the lane, another pedestrian approaches toward the camera at a steady walk and may pass close to the vehicle's path. Farther ahead in the center-right, a bicyclist rides away in the lane, occupying the path but keeping distance. Storefront displays and wrapped racks line the right side and slightly constrict the roadway.", "hazard_reasoning": "There is a pedestrian wearing white pants and a black shirt, carrying a backpack, and walking away from the ego car on the right side of the road. This pedestrian could step into the vehicle's path unexpectedly, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_04832", "split": "train", "clip_key": "2020-0203-154554_057403_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "057403"}, "frames": ["2020-0203-154554_057403_movie_t-3.jpg", "2020-0203-154554_057403_movie_t-2.jpg", "2020-0203-154554_057403_movie_t-1.jpg", "2020-0203-154554_057403_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A tree-lined urban arterial has two lanes in the ego direction separated from oncoming traffic by a hatched median; the pavement looks smooth and traffic is light to moderate with steady flow. A gray van ahead in the ego lane slows as traffic compresses farther ahead, constraining the ego vehicle's pace. A white van travels in the adjacent left curbside lane slightly ahead and continues straight at a steady speed without encroaching on the ego lane. Farther ahead in the same lane, a small car proceeds straight, maintaining a gap in front of the gray van. No obstacles or work zones are visible.", "hazard_reasoning": "There is a gray van slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should slow down to match the traffic speed ahead and maintain a safe following distance."}
{"id": "train_04833", "split": "train", "clip_key": "titan_clip_7_000594_movie", "source": {"subset": "titan", "scenario": "clip_7", "frame": "000594"}, "frames": ["titan_clip_7_000594_movie_t-3.jpg", "titan_clip_7_000594_movie_t-2.jpg", "titan_clip_7_000594_movie_t-1.jpg", "titan_clip_7_000594_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian at the crosswalk.", "environment_perception": "An urban street with mid-rise buildings appears, and the ego car approaches a junction on a narrow two-way road with smooth pavement and light traffic. A female pedestrian wearing a white T-shirt and black skirt, carrying a handbag, crosses from left to right in the marked crosswalk directly in front of the ego vehicle, occupying its lane. Slightly ahead in the same crosswalk, another pedestrian walks rightward toward the far curb, continuing across the ego car's path. A blue pedestrian-crossing sign stands on the corner beside the crosswalk.", "hazard_reasoning": "There is a female pedestrian wearing a white t-shirt, black shirt, and carrying a handbag, crossing the street from left to right in a marked crosswalk, in front of the ego-car. The driver should yield because the pedestrian is entering the vehicle's path at the crosswalk."}
{"id": "train_04834", "split": "train", "clip_key": "2020-0228-102841_080448_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_080448_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_080448_movie_t-3_augB1.jpg", "2020-0228-102841_080448_movie_t-2_augB1.jpg", "2020-0228-102841_080448_movie_t-1_augB1.jpg", "2020-0228-102841_080448_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes on red pavement runs between tall buildings; the surface looks smooth and traffic is heavy and slow-moving. A black motorcycle directly ahead in the ego lane slows and inches forward because congestion builds around vehicles ahead, constraining our pace. Farther ahead in the same lane, a light box truck rolls slowly with the queue, contributing to the backup. In the right lane, a white minivan alongside and then slightly ahead creeps near the painted buffer, limiting lateral space next to the ego lane. In the left lane, a larger freight truck and a line of cars remain nearly stopped, partially blocking the sight line to that side.", "hazard_reasoning": "There is a black motorcycle slowing down in front of the ego lane, because of traffic congestion ahead. The driver should slow down to match the reduced speed and prevent a collision due to the traffic buildup."}
{"id": "train_04835", "split": "train", "clip_key": "2020-0207-151349_020390_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "020390"}, "frames": ["2020-0207-151349_020390_movie_t-3.jpg", "2020-0207-151349_020390_movie_t-2.jpg", "2020-0207-151349_020390_movie_t-1.jpg", "2020-0207-151349_020390_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs between tall buildings with smooth, dry pavement and a curbside barrier on the right; traffic is moderate and slows near an intersection. A white box truck directly ahead in the ego lane slows and stops for a red traffic signal up the street, holding the ego vehicle. A second truck slightly ahead in the right adjacent lane continues forward in the same direction, remaining parallel without merging into the ego lane. A white car on the far-right lane overtakes the queue and moves ahead. Overhead gantry signs in Japanese indicate upcoming directions, and strong sun glare brightens the scene.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane, because of a red traffic light ahead on the street. The driver should slow down to maintain a safe following distance and prepare to stop for the red light."}
{"id": "train_04836", "split": "train", "clip_key": "2020-0203-114632_027463_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "027463"}, "frames": ["2020-0203-114632_027463_movie_t-3.jpg", "2020-0203-114632_027463_movie_t-2.jpg", "2020-0203-114632_027463_movie_t-1.jpg", "2020-0203-114632_027463_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with two lanes in the ego direction runs between mid-rise buildings, with a painted chevron median and dry smooth pavement; overall traffic is light. A black van ahead in the ego lane drives away from the ego car, continuing straight. On the right, two white utility trucks are stopped at a coned roadside work area that narrows the right lane. The oncoming side remains largely clear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04837", "split": "train", "clip_key": "titan_clip_1222_000192_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1222_000192_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1222_000192_movie_t-3_augB1.jpg", "titan_clip_1222_000192_movie_t-2_augB1.jpg", "titan_clip_1222_000192_movie_t-1_augB1.jpg", "titan_clip_1222_000192_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban commercial street with very limited or no sidewalks appears to be two-way without a marked median; the pavement is smooth with utility covers, and traffic is light with no vehicles ahead or oncoming. Ahead in the vehicle's lane, a group of pedestrians wearing white shirts and black pants stands and walks in the middle of the road because there is no sidewalk, occupying the lane and constraining the vehicle's pace. Farther ahead near a zebra crossing, a single pedestrian crosses left to right and may enter the vehicle's path.", "hazard_reasoning": "There is a group of pedestrians wearing black pants and white shirts, and standing in the middle of the road because there is no sidewalk. The driver should carefully manoeuvre to avoid colliding with them as they occupy the roadway."}
{"id": "train_04838", "split": "train", "clip_key": "titan_clip_1175_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1175_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1175_000198_movie_t-3_augB1.jpg", "titan_clip_1175_000198_movie_t-2_augB1.jpg", "titan_clip_1175_000198_movie_t-1_augB1.jpg", "titan_clip_1175_000198_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead.", "environment_perception": "A narrow urban side street with no marked lanes runs between buildings, bordered by construction fencing and cones; the pavement is worn and traffic is light with no moving vehicles. A pedestrian in a white shirt and black pants approaches from ahead toward the ego car along the center of the roadway, potentially entering its path. Two other pedestrians farther ahead keep to the left-side coned corridor and walk away, creating minimal interaction. On the near right, a white truck is stopped at the curb with its body protruding into the roadway, narrowing the usable space. Temporary barriers and cones define a constrained passage through an active work zone.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking toward the ego car. The pedestrian is approaching the vehicle's path at a crosswalk, so the driver should yield to allow safe crossing."}
{"id": "train_04839", "split": "train", "clip_key": "2020-0226-140503_058316_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "058316"}, "frames": ["2020-0226-140503_058316_movie_t-3.jpg", "2020-0226-140503_058316_movie_t-2.jpg", "2020-0226-140503_058316_movie_t-1.jpg", "2020-0226-140503_058316_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van", "environment_perception": "A narrow two-way urban street without a marked centerline runs straight between buildings, the pavement is smooth, and traffic is light. A black minivan is parked immediately on the left curb beside the ego lane, reducing lateral clearance as the vehicle passes. Farther ahead, a silver van is parked at the left side of the road, further narrowing the usable lane. A few pedestrians walk along the right sidewalk ahead past building entrances and remain off the carriageway. Distant vehicles appear further along the corridor but do not influence the ego vehicle's movement.", "hazard_reasoning": "There is a silver van parked at the left side of the road. The parked van may force you to adjust your path or encounter an unexpected pull-out, so you should be aware of its presence."}
{"id": "train_04840", "split": "train", "clip_key": "2020-0228-102841_047775_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "047775"}, "frames": ["2020-0228-102841_047775_movie_t-3.jpg", "2020-0228-102841_047775_movie_t-2.jpg", "2020-0228-102841_047775_movie_t-1.jpg", "2020-0228-102841_047775_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for the red light ahead.", "environment_perception": "An urban multi-lane arterial with a curbside guardrail and smooth pavement approaches a signalized intersection, and traffic is moderate as vehicles queue. A silver van directly ahead in the ego lane is stopped at the line because the light is red, holding the ego car. A motorbike slightly ahead to the right waits near the intersection and inches forward in the adjacent lane, potentially entering the junction once the signal changes but not impeding the ego lane. Another white van in the right lane draws level and comes to a stop alongside, forming the neighboring queue. The overhead traffic signal shows a red aspect.", "hazard_reasoning": "A silver van is stopped in front of the ego car in the ego lane, because the light is red. You must stop to avoid a collision and comply with the red signal ahead."}
{"id": "train_04841", "split": "train", "clip_key": "titan_clip_1147_000294_movie", "source": {"subset": "titan", "scenario": "clip_1147", "frame": "000294"}, "frames": ["titan_clip_1147_000294_movie_t-3.jpg", "titan_clip_1147_000294_movie_t-2.jpg", "titan_clip_1147_000294_movie_t-1.jpg", "titan_clip_1147_000294_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian ahead.", "environment_perception": "A narrow urban street without a centerline and with worn but dry asphalt is shown, with light traffic and no oncoming vehicles visible. A white box truck ahead in the ego lane is stopped near the middle of the street, constraining the ego vehicle's pace. On the right side, a pedestrian wearing a white shirt and a cap walks toward the ego vehicle along the road edge and could step into the lane. Another pedestrian in front of the truck walks in the roadway, further reducing passing room. A flatbed truck is parked along the left curb near the camera, and construction fencing lines the right side, narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and a cap, and walking toward the ego car on the right side of the road. The pedestrian is moving toward the vehicle's path, so the driver needs to manoeuvre to avoid collision."}
{"id": "train_04842", "split": "train", "clip_key": "titan_clip_691_000300_movie", "source": {"subset": "titan", "scenario": "clip_691", "frame": "000300"}, "frames": ["titan_clip_691_000300_movie_t-3.jpg", "titan_clip_691_000300_movie_t-2.jpg", "titan_clip_691_000300_movie_t-1.jpg", "titan_clip_691_000300_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single shared lane and no divider leads toward a busier intersection; the pavement is patched and several white vans are parked along the left, so motor traffic is light. Two pedestrians walk ahead along the right edge, moving away from the ego vehicle; the nearer one carries a handbag and walks in the roadway to pass another person on the right shoulder. A person in a long dress waits near the left curb by the parked vans, remaining clear of the lane. Farther ahead at the intersection, a cyclist rides across from left to right before leaving the ego path.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing black pants and a yellow shirt, and walking on the right side of the road, away from the ego car, because of another pedestrian on the right shoulder. The driver should slow down to account for limited visibility and ensure a safe distance from crossing pedestrians."}
{"id": "train_04843", "split": "train", "clip_key": "2020-0210-155354_030170_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "030170"}, "frames": ["2020-0210-155354_030170_movie_t-3.jpg", "2020-0210-155354_030170_movie_t-2.jpg", "2020-0210-155354_030170_movie_t-1.jpg", "2020-0210-155354_030170_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with two lanes per direction runs under a pedestrian footbridge, divided by an orange center line; the pavement is dry and intact, and traffic flows at a slow, moderate pace. In the lane to the right of the ego vehicle, a black SUV slows and gradually pulls away because of traffic congestion ahead. Directly ahead in the ego lane, a small black hatchback continues at a modest speed, matching the slowdown and constraining the ego car. Along the left curb, a large white box truck stands stopped in a bay, reducing the shoulder space beside the lane. A steady stream of oncoming cars passes on the far right beyond the center line, and flexible bollards mark the lane edge near the camera.", "hazard_reasoning": "There is a black SUV slowing and moving away from the ego car in the right lane because of traffic congestion ahead. The driver should slow down to adapt to reduced speeds ahead and maintain a safe following distance."}
{"id": "train_04844", "split": "train", "clip_key": "titan_clip_1235_000450_movie", "source": {"subset": "titan", "scenario": "clip_1235", "frame": "000450"}, "frames": ["titan_clip_1235_000450_movie_t-3.jpg", "titan_clip_1235_000450_movie_t-2.jpg", "titan_clip_1235_000450_movie_t-1.jpg", "titan_clip_1235_000450_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the distracted pedestrian", "environment_perception": "An urban two-way street with a single narrow lane per direction curves gently uphill to the left; pavement is smooth and traffic is light. Two pedestrians ahead near the center move from the left side toward the right, crossing slowly through the ego lane and constraining its pace. On the right edge close to the camera, a pedestrian walks toward the ego vehicle while looking at a phone, and may step into the lane from the roadside. No moving vehicles are visible in either direction. Parked cars line the right curb, including an SUV in the foreground, reducing lateral space.", "hazard_reasoning": "There is a pedestrian wearing a blue dress, looking into a phone, and walking on the right side of the road, towards the ego car. Because the pedestrian is distracted by looking at her phone while approaching the vehicle, the driver should be cautious to avoid a potential collision."}
{"id": "train_04845", "split": "train", "clip_key": "2020-0131-135401_005088_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "005088"}, "frames": ["2020-0131-135401_005088_movie_t-3.jpg", "2020-0131-135401_005088_movie_t-2.jpg", "2020-0131-135401_005088_movie_t-1.jpg", "2020-0131-135401_005088_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way road with one narrow lane in each direction has smooth pavement, no median, and light traffic under strong sun glare. A white box truck is stopped directly ahead in the ego lane, blocking the path and constraining the ego vehicle's pace. Several pedestrians are on the left sidewalk ahead, walking along the curb and remaining off the roadway. No oncoming vehicles are visible past the truck. An overhead circular sign shows a posted speed limit of 40.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane. The driver should stop to avoid a collision with the stationary vehicle ahead."}
{"id": "train_04846", "split": "train", "clip_key": "titan_clip_156_000198_movie", "source": {"subset": "titan", "scenario": "clip_156", "frame": "000198"}, "frames": ["titan_clip_156_000198_movie_t-3.jpg", "titan_clip_156_000198_movie_t-2.jpg", "titan_clip_156_000198_movie_t-1.jpg", "titan_clip_156_000198_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban back street runs under an elevated structure with narrow two-way traffic, no marked lanes, and dry pavement; traffic is light as the ego vehicle proceeds straight at low speed. Ahead near the left curb, a white delivery truck stands stopped under the viaduct, narrowing the usable lane and constraining the ego vehicle's pace. On the left side of the road, a pedestrian wearing a black T-shirt walks away from the ego car along the edge, parallel to the lane and clear of the path. A red stop sign and a no-parking sign are posted on the left, and stacked boxes along the curb add minor roadside clutter.", "hazard_reasoning": "There is a pedestrian wearing a black T-shirt, walking on the left side of the road, away from the ego car. The parked truck limits the driver's view of the pedestrian, so the ego-vehicle should manoeuvre carefully to avoid a collision."}
{"id": "train_04847", "split": "train", "clip_key": "titan_clip_126_000024_movie", "source": {"subset": "titan", "scenario": "clip_126", "frame": "000024"}, "frames": ["titan_clip_126_000024_movie_t-3.jpg", "titan_clip_126_000024_movie_t-2.jpg", "titan_clip_126_000024_movie_t-1.jpg", "titan_clip_126_000024_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked SUV", "environment_perception": "An urban two-way street with a single lane each direction has smooth pavement, no median, and light traffic as the road curves gently right past a small intersection. A black SUV is parked on the left in the ego lane near the curb, occupying part of the travel way and constraining the ego vehicle's path. A cyclist ahead to the right of the SUV moves slowly along the curb through the intersection in the same direction, relevant because the ego may need to steer around the parked vehicle near the rider. The rest of the roadway stays clear with no visible signals controlling the junction.", "hazard_reasoning": "There is a black SUV parked on the left side of the road, in the ego lane. The driver should carefully manoeuvre around it to avoid a collision."}
{"id": "train_04848", "split": "train", "clip_key": "2020-0210-101957_023059_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "023059"}, "frames": ["2020-0210-101957_023059_movie_t-3.jpg", "2020-0210-101957_023059_movie_t-2.jpg", "2020-0210-101957_023059_movie_t-1.jpg", "2020-0210-101957_023059_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Be aware of the motorcyclist ahead", "environment_perception": "An urban multi-lane two-way road with no physical median and smooth pavement carries moderate traffic as the ego vehicle approaches a signalized intersection with wide zebra markings. Ahead in the ego lane, a black motorcyclist rides away from the ego car and continues straight through the junction, modestly setting the pace. Slightly ahead to the right, a white van travels in the adjacent lane at a steady speed and holds its line. Farther ahead in the same direction, a large white truck proceeds straight in the center lanes and leads the flow.", "hazard_reasoning": "There is a black motorcyclist driving in the ego lane away from the ego car. The motorcyclist ahead may change speed or direction unexpectedly, so the driver should be aware to maintain a safe distance."}
{"id": "train_04849", "split": "train", "clip_key": "2020-0204-150838_032242_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "032242"}, "frames": ["2020-0204-150838_032242_movie_t-3.jpg", "2020-0204-150838_032242_movie_t-2.jpg", "2020-0204-150838_032242_movie_t-1.jpg", "2020-0204-150838_032242_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision ahead.", "environment_perception": "A dense urban downtown scene unfolds on a multi-lane two-way road with a painted double yellow centerline and no physical median; the pavement is dry and traffic is heavy and mostly stopped. A white van directly ahead in the ego lane is stopped, holding the lane because of congestion ahead. Slightly ahead to the left, a white minivan in the adjacent same-direction lane edges forward and stays close, limiting a lane change. Alongside on the left, a black sedan creeps forward parallel to the ego vehicle, further restricting space. Pedestrians wait on the far right sidewalk near a crosswalk.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of traffic congestion ahead. The driver must stop to prevent a rear-end collision with the halted vehicle."}
{"id": "train_04850", "split": "train", "clip_key": "2020-0226-140503_104446_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "104446"}, "frames": ["2020-0226-140503_104446_movie_t-3.jpg", "2020-0226-140503_104446_movie_t-2.jpg", "2020-0226-140503_104446_movie_t-1.jpg", "2020-0226-140503_104446_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane per direction runs between low-rise buildings, the ego traveling in the left lane with no median and a metal guardrail along the right edge; the asphalt is smooth. Traffic is light and steady. A silver box truck directly ahead in the ego lane accelerates and begins to pull away, setting the pace for the ego vehicle following behind.", "hazard_reasoning": "There is a silver truck accelerating in front of the ego car, in the ego lane. The truck is accelerating towards an intersection with a red light, so the driver should be ready to start moving promptly when the signal changes."}
{"id": "train_04851", "split": "train", "clip_key": "titan_clip_618_000204_movie", "source": {"subset": "titan", "scenario": "clip_618", "frame": "000204"}, "frames": ["titan_clip_618_000204_movie_t-3.jpg", "titan_clip_618_000204_movie_t-2.jpg", "titan_clip_618_000204_movie_t-1.jpg", "titan_clip_618_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban side street with no centerline appears narrow and smoothly paved, with light traffic and no medians; bicycles are parked along the right curb, slightly narrowing the lane. A cyclist rides ahead near the lane center, moving away from the ego vehicle and constraining its pace. On the right side farther ahead, a pedestrian in a white shirt and black pants walks away while wheeling a bicycle beside them, staying close to the curb. Another pedestrian is visible farther ahead along the left edge, walking parallel to traffic without entering the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking with their bicycle at their side, on the right side of the road, away from the ego car. The pedestrian may veer into the lane unexpectedly, so the driver should carefully manoeuvre around them."}
{"id": "train_04852", "split": "train", "clip_key": "2020-0212-102546_085836_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "085836"}, "frames": ["2020-0212-102546_085836_movie_t-3.jpg", "2020-0212-102546_085836_movie_t-2.jpg", "2020-0212-102546_085836_movie_t-1.jpg", "2020-0212-102546_085836_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban divided road with two same-direction lanes runs between high noise barriers, the pavement smooth and traffic otherwise light. A striped gore area extends along the right side. A white van directly ahead in the left ego lane is stopped, blocking the lane and constraining the ego vehicle's progress. No other nearby vehicles are seen in the adjacent right lane, and no oncoming traffic is visible. No salient signals or speed signs appear.", "hazard_reasoning": "There is a white van stopped in the ego lane. The driver should stop promptly to avoid a collision with the halted vehicle ahead."}
{"id": "train_04853", "split": "train", "clip_key": "2020-0220-102630_121760_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "121760"}, "frames": ["2020-0220-102630_121760_movie_t-3.jpg", "2020-0220-102630_121760_movie_t-2.jpg", "2020-0220-102630_121760_movie_t-1.jpg", "2020-0220-102630_121760_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane each direction and a solid yellow centerline appears dry and slightly worn, and traffic moves slowly. A black SUV is directly ahead in the ego lane and remains stopped, holding the ego vehicle because of congestion ahead. In the opposite lane to the right, a white car approaches and continues straight without encroaching. A pedestrian stands on the left sidewalk by the buildings, staying clear of the roadway.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car because of traffic congestion ahead. The traffic congestion has halted vehicles unexpectedly, so the driver must stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_04854", "split": "train", "clip_key": "titan_clip_1202_000264_movie", "source": {"subset": "titan", "scenario": "clip_1202", "frame": "000264"}, "frames": ["titan_clip_1202_000264_movie_t-3.jpg", "titan_clip_1202_000264_movie_t-2.jpg", "titan_clip_1202_000264_movie_t-1.jpg", "titan_clip_1202_000264_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban residential street in Japan lacks a centerline, with smooth pavement and very light traffic; no same-direction or oncoming vehicles appear. On the right side by a low railing, a girl in a blue dress stands at the curb and kicks toward the ego lane, and she may enter the travel path. Farther ahead, a pedestrian walks away along the left edge of the roadway close to the ego path. Parked bicycles line the right sidewalk behind a fence, with a blue temporary barrier and bright construction hoarding further narrowing the shoulder, and utility poles and walls sit close to the lane as the road bends slightly left.", "hazard_reasoning": "There is a girl wearing a blue dress, standing on the right side of the road, kicking towards the ego lane. The driver needs to carefully manoeuvre around her to avoid a collision because her kicking motion could unexpectedly enter the vehicle's path."}
{"id": "train_04855", "split": "train", "clip_key": "titan_clip_1035_000396_movie", "source": {"subset": "titan", "scenario": "clip_1035", "frame": "000396"}, "frames": ["titan_clip_1035_000396_movie_t-3.jpg", "titan_clip_1035_000396_movie_t-2.jpg", "titan_clip_1035_000396_movie_t-1.jpg", "titan_clip_1035_000396_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian on the right", "environment_perception": "An urban commercial street with paver blocks has no marked lanes or median, and several delivery trucks stop along both curbs, narrowing the roadway and keeping traffic light and slow. Ahead in the middle distance, a small white truck moves left across the ego vehicle's path at the junction, briefly constraining progress. On the right, a man wearing a light-blue shirt and black pants walks toward the ego vehicle along the curb, going around a parked truck and potentially edging into the travel path. Other parked box trucks protrude slightly from the left and right, with a few pedestrians lingering near them, creating a tight corridor through the center.", "hazard_reasoning": "There is a man wearing a light-blue shirt and black pants, and walking towards the ego car, on the right side of the road, because of the parked vehicle. The pedestrian's trajectory towards the vehicle indicates potential crossing ahead, so the driver should be aware to avoid a collision alignment with the warning content."}
{"id": "train_04856", "split": "train", "clip_key": "titan_clip_929_000138_movie", "source": {"subset": "titan", "scenario": "clip_929", "frame": "000138"}, "frames": ["titan_clip_929_000138_movie_t-3.jpg", "titan_clip_929_000138_movie_t-2.jpg", "titan_clip_929_000138_movie_t-1.jpg", "titan_clip_929_000138_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of the pedestrian crossing", "environment_perception": "An urban intersection on a two-way, single-lane street with no median and smooth pavement, with light traffic as the ego-vehicle approaches in the left lane. Ahead to the right, a tall pedestrian in a white shirt and gray pants walks away from the ego-car across the marked crosswalk, occupying the space ahead as he continues to the far side. On the right beyond the crossing, a white delivery truck is stopped at the curb, reducing space near the corner. Farther along the street, a dark truck travels away, not immediately affecting the ego path. The pedestrian signal displays a walk indication.", "hazard_reasoning": "There is a tall male pedestrian, wearing a white shirt and gray pants, crossing the road at the pedestrian crossing, away from the ego-car, because there is a marked crosswalk. The pedestrian is on the crosswalk ahead, so the driver should be cautious to avoid a collision."}
{"id": "train_04857", "split": "train", "clip_key": "2020-0129-105040_029248_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "029248"}, "frames": ["2020-0129-105040_029248_movie_t-3.jpg", "2020-0129-105040_029248_movie_t-2.jpg", "2020-0129-105040_029248_movie_t-1.jpg", "2020-0129-105040_029248_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway runs beneath elevated structures with a single through lane and a short auxiliary lane on the right, bounded by concrete walls and guardrails; the pavement looks smooth and traffic is light to moderate as the road nears a tunnel. A silver sedan ahead in the ego lane cruises steadily and governs the pace. Farther ahead, a dark hatchback in the same lane slows slightly as vehicles compress near the tunnel entrance. On the right, a white box truck in the tapering auxiliary lane rolls slowly near the merge into the through lane, potentially entering the ego lane. Green overhead direction signs are visible before the tunnel, and there is no oncoming traffic.", "hazard_reasoning": "No immediate hazards are present, so no warning is needed."}
{"id": "train_04858", "split": "train", "clip_key": "titan_clip_930_000036_movie", "source": {"subset": "titan", "scenario": "clip_930", "frame": "000036"}, "frames": ["titan_clip_930_000036_movie_t-3.jpg", "titan_clip_930_000036_movie_t-2.jpg", "titan_clip_930_000036_movie_t-1.jpg", "titan_clip_930_000036_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in each direction runs between tall buildings; a low fence on the median separates directions, the pavement is dry and smooth, and traffic remains light. Ahead in the ego lane, a black van drives away at a steady pace, subtly constraining the ego vehicle's speed. To the right beyond the median, an oncoming white car proceeds along its inside lane and passes by without interaction. Farther right, a silver van travels the opposite curb lane in the same oncoming flow, likewise remaining separated by the divider.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car. You should follow the vehicle ahead to maintain a safe distance and anticipate any sudden braking."}
{"id": "train_04859", "split": "train", "clip_key": "2020-0204-103442_088790_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "088790"}, "frames": ["2020-0204-103442_088790_movie_t-3.jpg", "2020-0204-103442_088790_movie_t-2.jpg", "2020-0204-103442_088790_movie_t-1.jpg", "2020-0204-103442_088790_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban bridge carries two same-direction lanes with guardrails on both sides; the pavement is smooth and traffic moves at a moderate, steady pace toward an upcoming split. A white van directly ahead in the ego lane accelerates, setting the immediate path and increasing the gap. In the adjacent left lane, a black SUV slightly ahead travels steadily alongside, limiting an easy lane change before the split. Farther ahead in the left lane, a small car continues with the flow without affecting the ego vehicle. A blue overhead sign for Route 3 shows options, with arrows toward Futagobashi to the left and Inagi to the right.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04860", "split": "train", "clip_key": "2020-0225-102455_053704_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "053704"}, "frames": ["2020-0225-102455_053704_movie_t-3.jpg", "2020-0225-102455_053704_movie_t-2.jpg", "2020-0225-102455_053704_movie_t-1.jpg", "2020-0225-102455_053704_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane road passes between tall buildings with an elevated expressway on the right behind a metal guardrail; the pavement is smooth and traffic is heavy and slow. A gray van directly ahead in the ego lane has stopped due to congestion and holds the ego car at a standstill. In the lane to the left, several small vans queue closely and inch forward, constraining any lane change. At the far left curb, a dark kei van sits near the lane edge, narrowing the space beside the queue. A roadside sign on the left indicates no parking.", "hazard_reasoning": "There is a gray van that has stopped in the ego lane due to traffic congestion ahead, in front of the ego car. The driver should stop to avoid a collision with the halted van and maintain safety while waiting for traffic to clear."}
{"id": "train_04861", "split": "train", "clip_key": "2020-0217-110854_004426_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "004426"}, "frames": ["2020-0217-110854_004426_movie_t-3.jpg", "2020-0217-110854_004426_movie_t-2.jpg", "2020-0217-110854_004426_movie_t-1.jpg", "2020-0217-110854_004426_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban shopping street with a narrow two-way road, no median, and smooth pavement shows queued traffic and slow movement; no oncoming vehicles are visible. A white sedan is stopped directly ahead in the ego lane because congestion builds up in front. Farther ahead in the same lane, a white service truck is also stopped near the intersection, blocking the lane and setting the pace. From a side street on the right, a black car noses out and turns left across in front of the truck, momentarily occupying the junction and potentially entering the ego vehicle's path once the queue moves. A traffic signal ahead displays red, holding the line of vehicles at the intersection.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop because the vehicle ahead is halted due to congestion, reducing safe stopping distance and increasing risk of a rear-end collision."}
{"id": "train_04862", "split": "train", "clip_key": "2020-0210-155354_035884_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "035884"}, "frames": ["2020-0210-155354_035884_movie_t-3.jpg", "2020-0210-155354_035884_movie_t-2.jpg", "2020-0210-155354_035884_movie_t-1.jpg", "2020-0210-155354_035884_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A three-lane urban arterial with smooth pavement carries heavy, stop-and-go traffic approaching a signalized intersection, with no median visible. Directly ahead, a black hatchback is stopped in the ego lane at the red light, holding the ego car. In the adjacent right lane, a black sedan slightly ahead eases to a stop with the queue, limiting an immediate merge. Ahead to the left, a white van in the left lane remains halted near the curb with the same queue. An overhead signal is clearly red above the lanes.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of the red traffic lights. Driver must stop to avoid colliding with the stationary hatchback at the red light."}
{"id": "train_04863", "split": "train", "clip_key": "2020-0210-101957_005127_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "005127"}, "frames": ["2020-0210-101957_005127_movie_t-3.jpg", "2020-0210-101957_005127_movie_t-2.jpg", "2020-0210-101957_005127_movie_t-1.jpg", "2020-0210-101957_005127_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the stopped minivan", "environment_perception": "In an urban setting, the ego vehicle travels on a two-way single-lane road with a painted centerline, smooth pavement, and a gentle right curve; traffic appears light. A white kei van sits just ahead at the left curb, stationary and slightly protruding into the ego lane, so it constrains the line through the bend. Farther ahead, a black minivan is stopped on the left side of the road, remaining still along the curb and narrowing the usable lane. Several oncoming cars approach around the curve in their lane, moving steadily without crossing the centerline.", "hazard_reasoning": "There's a black minivan stopped on the left side of the road. The driver should maneuver carefully around this stopped vehicle to avoid collision and maintain safe traffic flow."}
{"id": "train_04864", "split": "train", "clip_key": "titan_clip_1084_000078_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1084_000078_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1084_000078_movie_t-3_augB1.jpg", "titan_clip_1084_000078_movie_t-2_augB1.jpg", "titan_clip_1084_000078_movie_t-1_augB1.jpg", "titan_clip_1084_000078_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban backstreet with a single shared lane, no median, and no sidewalks runs between close building walls; the pavement is dry and intact, and no vehicles are present so traffic is light. Directly ahead in the middle of the lane, a pedestrian in a black dress carrying a handbag walks away from the ego car because there is no sidewalk, occupying the path and setting the pace. Near the left edge, a man approaches along the curb, close to the lane and affecting clearance. Farther ahead near the center-right, a person holding a light umbrella also walks away within the lane, further reducing space. The corridor is tightly bounded, with a utility pole near the left edge, leaving limited room to maneuver.", "hazard_reasoning": "There is a pedestrian wearing a black dress and carrying handbag walking in the middle of the road away from the ego car because there is no sidewalk on the side of the road. The driver should slow down to maintain a safe distance and avoid collision with the pedestrian."}
{"id": "train_04865", "split": "train", "clip_key": "titan_clip_552_000246_movie", "source": {"subset": "titan", "scenario": "clip_552", "frame": "000246"}, "frames": ["titan_clip_552_000246_movie_t-3.jpg", "titan_clip_552_000246_movie_t-2.jpg", "titan_clip_552_000246_movie_t-1.jpg", "titan_clip_552_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban commercial street with a single narrow lane and no median approaches a zebra crosswalk; the pavement is dry, vehicle flow is light, and pedestrian activity is heavy. Ahead, a pedestrian in a white shirt crosses from the right to the left at the crosswalk, entering the ego lane and controlling the approach. Several other pedestrians from the left also stream across the lane, further constraining progress. A small white delivery truck continues ahead in the same direction beyond the crosswalk at low speed. More pedestrians wait at the right curb near shopfronts. An overhead blue sign indicates a pedestrian crossing.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and crossing the street, from the right side to the left side, ahead at the crosswalk. The driver should yield because the pedestrian is on the crosswalk and has the right of way."}
{"id": "train_04866", "split": "train", "clip_key": "2020-0210-101957_069161_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "069161"}, "frames": ["2020-0210-101957_069161_movie_t-3.jpg", "2020-0210-101957_069161_movie_t-2.jpg", "2020-0210-101957_069161_movie_t-1.jpg", "2020-0210-101957_069161_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane each direction and no median runs between close buildings; the pavement looks sound and traffic is light but briefly constrained. Ahead in the ego lane, a white minivan slows almost to a stop because the lane is narrow and it yields to a large box truck in the oncoming lane. To the right, the box truck occupies most of its lane and creeps past, reducing the available width and setting the pace for following traffic. Bicycles and racks line the left sidewalk, removing any usable shoulder but not moving into the roadway.", "hazard_reasoning": "There's a white minivan slowing down in the ego lane, because it is a narrow lane and there is a large truck in the oncoming traffic lane. The driver should slow down to maintain a safe distance and avoid sudden braking due to reduced visibility ahead."}
{"id": "train_04867", "split": "train", "clip_key": "2020-0226-140503_090792_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "090792"}, "frames": ["2020-0226-140503_090792_movie_t-3.jpg", "2020-0226-140503_090792_movie_t-2.jpg", "2020-0226-140503_090792_movie_t-1.jpg", "2020-0226-140503_090792_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban two-way street with a single lane per direction and a solid yellow centerline runs between mid-rise buildings; the pavement is dry and smooth and traffic is light. A small dark kei truck ahead in the ego lane continues straight and eases off slightly, setting the ego vehicle's pace. In the opposite lane, a white van approaches from ahead and passes while staying in its lane. A white car sits stationary near the left curb close to the ego vehicle and does not enter the roadway.", "hazard_reasoning": "There is a green sedan slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe distance and avoid a potential collision."}
{"id": "train_04868", "split": "train", "clip_key": "2020-0207-101955_019904_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "019904"}, "frames": ["2020-0207-101955_019904_movie_t-3.jpg", "2020-0207-101955_019904_movie_t-2.jpg", "2020-0207-101955_019904_movie_t-1.jpg", "2020-0207-101955_019904_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with multiple lanes and a painted median runs under a pedestrian footbridge; the pavement looks smooth and traffic is light and steady. A white truck with a green tarp drives ahead in the ego lane, moving away at a constant speed and setting the ego vehicle's following gap. To the right, an oncoming silver minivan advances in its lane and passes without encroaching toward the median, posing no conflict. The footbridge carries a blue directional sign with destinations and a 400 m distance indication.", "hazard_reasoning": "There is a white truck with a green tarp driving in the ego lane away from the ego car. The truck ahead could brake or slow unexpectedly, so the driver should be cautious under these conditions."}
{"id": "train_04869", "split": "train", "clip_key": "titan_clip_173_000486_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_173_000486_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_173_000486_movie_t-3_augB1.jpg", "titan_clip_173_000486_movie_t-2_augB1.jpg", "titan_clip_173_000486_movie_t-1_augB1.jpg", "titan_clip_173_000486_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian unloading truck", "environment_perception": "An urban scene shows a narrow single-lane road with smooth pavement approaching a crosswalked intersection; traffic is light but slows due to an obstruction ahead. A large box truck is stopped in the ego lane with its rear open, occupying most of the path and constraining progress. A pedestrian wearing black pants and carrying a backpack stands in the middle of the road beside the truck while unloading it, directly within the ego lane. A white car is parked along the left curb just behind the truck, further narrowing the available space. Additional pedestrians are visible on the sidewalks near the intersection.", "hazard_reasoning": "There is a pedestrian wearing black pants, carrying a backpack and standing in the middle of the road because he is unloading a truck. The pedestrian unloading the truck may move unpredictably into the vehicle's path, so the driver should carefully manoeuvre around him."}
{"id": "train_04870", "split": "train", "clip_key": "2020-0225-102455_084704_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "084704"}, "frames": ["2020-0225-102455_084704_movie_t-3.jpg", "2020-0225-102455_084704_movie_t-2.jpg", "2020-0225-102455_084704_movie_t-1.jpg", "2020-0225-102455_084704_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction runs between mid-rise buildings, with a painted center line and smooth asphalt; traffic is moderate and compresses ahead. A white hatchback directly ahead in the ego lane slows as vehicles queue, constraining the ego vehicle's pace. Slightly ahead to the right, a small flatbed truck in the adjacent same-direction lane also slows in step with the queue. In the opposite lanes to the right, a large bus approaches, traveling straight toward the camera while remaining across the center line. A fenced sidewalk lines the left curb.", "hazard_reasoning": "There is a white hatchback slowing down in the ego lane, because of traffic congestion ahead. The white hatchback's deceleration due to congestion indicates potential risk of sudden braking or reduced speed ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_04871", "split": "train", "clip_key": "2020-0226-101332_058631_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "058631"}, "frames": ["2020-0226-101332_058631_movie_t-3.jpg", "2020-0226-101332_058631_movie_t-2.jpg", "2020-0226-101332_058631_movie_t-1.jpg", "2020-0226-101332_058631_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down to avoid collision", "environment_perception": "An urban two-way arterial with two lanes in the ego direction runs alongside a hedge median on the right; the pavement is smooth and traffic is moderate as vehicles approach a signalized intersection. A light truck ahead in the ego lane slows toward the junction, constraining the ego car's pace. A white kei car slightly ahead to the left continues straight at steady speed in the adjacent lane. Farther ahead near the stop line, a grey sedan is already stopped as the light turns yellow at the intersection. Oncoming traffic remains separated beyond the median and does not interact.", "hazard_reasoning": "There is a grey sedan stopped ahead in front of the ego car, because there is a yellow light at the intersection. Slow down to avoid collision with the stopped vehicle at the intersection."}
{"id": "train_04872", "split": "train", "clip_key": "titan_clip_1120_000066_movie", "source": {"subset": "titan", "scenario": "clip_1120", "frame": "000066"}, "frames": ["titan_clip_1120_000066_movie_t-3.jpg", "titan_clip_1120_000066_movie_t-2.jpg", "titan_clip_1120_000066_movie_t-1.jpg", "titan_clip_1120_000066_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "An urban commercial street with a narrow two-way carriageway lacks a median and has smooth dry pavement; traffic is slow moving amid heavy foot activity. Ahead in the ego lane, a pedestrian wearing black clothing crosses from left to right in front of the car, continuing toward the right sidewalk and occupying the path. Beside him, several other pedestrians cross the same stretch slightly farther ahead, making nearby vehicles brake and constraining the pace. On the opposite side, a dark hatchback approaches as oncoming traffic, rolling slowly in its lane while yielding to the crossing people.", "hazard_reasoning": "There is a pedestrian wearing black clothing, crossing the street to the right side, in front of the ego car. The pedestrian has right of way and is entering the vehicle's path, so the driver should yield and reduce speed to avoid a collision."}
{"id": "train_04873", "split": "train", "clip_key": "titan_clip_204_000300_movie", "source": {"subset": "titan", "scenario": "clip_204", "frame": "000300"}, "frames": ["titan_clip_204_000300_movie_t-3.jpg", "titan_clip_204_000300_movie_t-2.jpg", "titan_clip_204_000300_movie_t-1.jpg", "titan_clip_204_000300_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban two-way street without a centerline runs straight between buildings, with smooth pavement, no median, and light traffic. The ego-vehicle proceeds along the left side after a zebra crossing. Far ahead in the same lane, a white box truck continues straight near a distant junction, directly in our path. No oncoming vehicles or crossing pedestrians are visible. A blue pedestrian crossing sign is posted on the right and 30 is marked on the roadway, and bicycles are parked along the right curb.", "hazard_reasoning": "A traffic cone sits on the left side of the road. Drivers should slow down and stay centered in the lane to safely navigate around the cone without abrupt maneuvers."}
{"id": "train_04874", "split": "train", "clip_key": "2020-0210-142719_004214_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "004214"}, "frames": ["2020-0210-142719_004214_movie_t-3.jpg", "2020-0210-142719_004214_movie_t-2.jpg", "2020-0210-142719_004214_movie_t-1.jpg", "2020-0210-142719_004214_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with one lane each way and no median, the pavement appears smooth and dry, and traffic flows at a light to moderate pace. A white van ahead in the ego lane moves steadily along the center of the lane, setting the ego vehicle's pace. On the right side in the oncoming half of the road, a box truck is stopped in a hatched pull-off beside the curb, remaining stationary and outside the travel lane. Farther ahead and to the right, several oncoming cars proceed toward the camera in their lane, separated by the center line and not crossing over. A red no-entry sign marks a side street on the right.", "hazard_reasoning": "No hazards are present as the road is unobstructed, traffic is flowing smoothly, and there are no pedestrians entering the roadway."}
{"id": "train_04875", "split": "train", "clip_key": "titan_clip_1050_000252_movie", "source": {"subset": "titan", "scenario": "clip_1050", "frame": "000252"}, "frames": ["titan_clip_1050_000252_movie_t-3.jpg", "titan_clip_1050_000252_movie_t-2.jpg", "titan_clip_1050_000252_movie_t-1.jpg", "titan_clip_1050_000252_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow two-way urban street with buildings close to the curb has no median and smooth pavement, and traffic is light at low speed. A white van ahead in the same direction proceeds slowly near the center of the road and briefly pauses, constraining the ego vehicle's pace. On the left edge, a small group of pedestrians walks away from the camera along the roadside; among them, a tall person in a white shirt and white pants keeps to the side and continues away from the ego car. On the right margin, two pedestrians walk away near the shopfronts. A parked bicycle stands by the right curb.", "hazard_reasoning": "There is a tall pedestrian, wearing a white shirt and white pants, walking in a group on the left side of the road away from the ego car. The driver should manoeuvre carefully around them because they could unexpectedly step into the lane."}
{"id": "train_04876", "split": "train", "clip_key": "2020-0226-101332_062322_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "062322"}, "frames": ["2020-0226-101332_062322_movie_t-3.jpg", "2020-0226-101332_062322_movie_t-2.jpg", "2020-0226-101332_062322_movie_t-1.jpg", "2020-0226-101332_062322_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a central guardrail median and smooth pavement carries moderate traffic that was queued at a signal and begins to disperse. Ahead in the ego lane a gray van starts to move as the light turns green, leading the ego car and setting its pace. In the right adjacent lane a white minibus slightly ahead accelerates straight in parallel, keeping close beside the ego vehicle. In the left lane a red taxi farther ahead rolls forward from the stop, continuing straight and remaining near the ego vehicle's path. The overhead signal shows green and vehicles proceed through the intersection.", "hazard_reasoning": "There is a gray van starting to move in front of the ego car, in the ego lane, because the traffic light turned green. The gray van has begun moving ahead on green, so you should start moving promptly to maintain safe traffic flow."}
{"id": "train_04877", "split": "train", "clip_key": "2020-0131-135401_052948_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "052948"}, "frames": ["2020-0131-135401_052948_movie_t-3.jpg", "2020-0131-135401_052948_movie_t-2.jpg", "2020-0131-135401_052948_movie_t-1.jpg", "2020-0131-135401_052948_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial with no physical median stretches ahead, the ego vehicle traveling in the leftmost lane; the pavement is dry and smooth, and traffic is light to moderate with steady opposing flow in the far lanes. A white minivan ahead to the right continues straight in the right lane and accelerates slightly, remaining clear of the ego lane. A dark SUV directly ahead in the center lane proceeds through the intersection at a steady speed, effectively setting the ego vehicle's pace. A white box van farther ahead in the same direction also goes straight with the main flow and poses no immediate conflict. A signalized intersection is visible ahead with overhead lights and blue directional signs.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04878", "split": "train", "clip_key": "2020-0218-103119_028933_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "028933"}, "frames": ["2020-0218-103119_028933_movie_t-3.jpg", "2020-0218-103119_028933_movie_t-2.jpg", "2020-0218-103119_028933_movie_t-1.jpg", "2020-0218-103119_028933_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban commercial street with two lanes and a solid white lane line has smooth pavement and light overall flow, but traffic slows near an intersection ahead. A gray box truck sits directly ahead in the ego lane, stopped because of the intersection and holding the ego vehicle stationary. In the adjacent right lane, a few vehicles far ahead continue forward past the junction, unaffected by the stoppage. Several pedestrians walk along the left sidewalk behind a guardrail near shop entrances without approaching the roadway. A cross-street is visible ahead, but no signal aspect is clearly seen.", "hazard_reasoning": "There is a gray semi-truck stopped in the ego-lane because of the intersection in front of the ego-car. The stopped truck blocks the lane and reduces visibility of the intersection ahead, so you should stop to avoid a collision."}
{"id": "train_04879", "split": "train", "clip_key": "titan_clip_1280_000258_movie", "source": {"subset": "titan", "scenario": "clip_1280", "frame": "000258"}, "frames": ["titan_clip_1280_000258_movie_t-3.jpg", "titan_clip_1280_000258_movie_t-2.jpg", "titan_clip_1280_000258_movie_t-1.jpg", "titan_clip_1280_000258_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian crossing ahead", "environment_perception": "An urban street in Japan with two lanes in the ego direction plus a right-turn lane, no physical median, and smooth pavement shows light, steady traffic. A pedestrian wearing black pants is in the middle of the road crossing toward the left side, moving across the ego vehicle's path and becoming immediately relevant. A white car far ahead in the same lane continues straight, gradually pulling away without affecting following distance. Another pedestrian stands on the right sidewalk near a building, walking parallel to traffic and not entering the roadway. No salient traffic signals are close by, and the carriageway remains clear of obstacles.", "hazard_reasoning": "There is a pedestrian in the middle of the road wearing black pants, crossing to the left side of the road. The pedestrian could step into the vehicle's path unexpectedly, so the driver should be cautious to avoid a collision."}
{"id": "train_04880", "split": "train", "clip_key": "titan_clip_834_000444_movie", "source": {"subset": "titan", "scenario": "clip_834", "frame": "000444"}, "frames": ["titan_clip_834_000444_movie_t-3.jpg", "titan_clip_834_000444_movie_t-2.jpg", "titan_clip_834_000444_movie_t-1.jpg", "titan_clip_834_000444_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban narrow one-lane shared street with paving blocks and no median, lined by mid-rise buildings. Traffic is light with mostly bicycles and pedestrians, and the road surface appears in good condition. On the right edge near the camera, an oncoming cyclist rides toward the ego-vehicle, partially in the center of the lane. Farther ahead in the same lane, two cyclists pedal away from the ego-vehicle at a moderate pace, constraining speed. On the left side, a pedestrian in a brown coat carrying a handbag walks away along the curb, remaining close to the edge of the roadway. A white minivan is parked along the left curb, narrowing the passage while other pedestrians linger near shop fronts.", "hazard_reasoning": "There is a pedestrian wearing a brown coat, carrying a handbag, and walking on the left side of the road, away from the ego-car. The pedestrian's proximity to the roadway means they could step into the vehicle's path unexpectedly, so the driver should slow down under this situation to avoid a collision."}
{"id": "train_04881", "split": "train", "clip_key": "2020-0226-140503_066103_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "066103"}, "frames": ["2020-0226-140503_066103_movie_t-3.jpg", "2020-0226-140503_066103_movie_t-2.jpg", "2020-0226-140503_066103_movie_t-1.jpg", "2020-0226-140503_066103_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of waiting pedestrian group", "environment_perception": "An urban multi-lane intersection with wide zebra crossings and red-painted pavement is dry, and traffic is moderate as cross traffic moves while the ego vehicle waits at the stop line under a red signal. Ahead in the junction, a gray van travels right to left through the intersection, clearing before our approach. Far ahead slightly left, a white box truck on the far side pauses near the crosswalk and then creeps forward with the cross flow. On the near left sidewalk, a small group of pedestrians, including one wearing a black coat and black pants, stands talking and waiting to cross because their light is red. The pedestrian signal to the left shows red as well.", "hazard_reasoning": "There is a pedestrian talking in a group, wearing black pants, and a black coat, who is waiting to cross the street on the left side of the road, because of a red light. The driver should be aware that this group may step into the crosswalk when the signal changes, requiring caution."}
{"id": "train_04882", "split": "train", "clip_key": "titan_clip_845_000174_movie", "source": {"subset": "titan", "scenario": "clip_845", "frame": "000174"}, "frames": ["titan_clip_845_000174_movie_t-3.jpg", "titan_clip_845_000174_movie_t-2.jpg", "titan_clip_845_000174_movie_t-1.jpg", "titan_clip_845_000174_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban residential two-way street with a single center line and smooth pavement shows light traffic and no oncoming vehicles visible. Ahead in the ego lane on the left, a white box truck is stopped with its rear door open as it is being unloaded, obstructing most of the lane and constraining the ego vehicle's path. No other moving vehicles or pedestrians appear nearby. Close-set walls and hedges line both sides, providing little shoulder space, and no salient signs or signals are visible.", "hazard_reasoning": "There is a white truck parked in the ego lane, on the left side of the road, because it is being unloaded. The parked truck partially blocks the lane, requiring the driver to manoeuvre carefully to avoid collision."}
{"id": "train_04883", "split": "train", "clip_key": "titan_clip_1023_000024_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1023_000024_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1023_000024_movie_t-3_augB1.jpg", "titan_clip_1023_000024_movie_t-2_augB1.jpg", "titan_clip_1023_000024_movie_t-1_augB1.jpg", "titan_clip_1023_000024_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian walking ahead", "environment_perception": "An urban residential alley in Japan with a single narrow two-way lane runs straight between buildings, with smooth asphalt and no median; traffic is light with no moving vehicles. Far ahead to the right of the lane, a pedestrian wearing black walks near the middle of the road and could enter the ego vehicle's path. The right side features a recessed driveway with bollards and a parked bicycle, while a walled garden lines the left, creating tight clearances along the corridor.", "hazard_reasoning": "There is a pedestrian wearing a black dress and walking in the middle of road, to the right side. The pedestrian's position in the lane poses a collision risk, so the driver should be aware and prepared to react."}
{"id": "train_04884", "split": "train", "clip_key": "titan_clip_590_000396_movie", "source": {"subset": "titan", "scenario": "clip_590", "frame": "000396"}, "frames": ["titan_clip_590_000396_movie_t-3.jpg", "titan_clip_590_000396_movie_t-2.jpg", "titan_clip_590_000396_movie_t-1.jpg", "titan_clip_590_000396_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop for pedestrian crossing", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway and no median appears, the pavement dry and slightly worn, and traffic is very light with no moving vehicles besides the ego car. At a small intersection ahead, a pedestrian wearing a white shirt and carrying a cane crosses from left to right directly in front of the ego vehicle, entering the ego lane and momentarily blocking its path. Several vehicles are parked along the right curb near the corner, narrowing the usable roadway, and close-set buildings create a confined view at the junction.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a cane and crossing the street on the intersection in front of the ego car, from the left to the right side. The driver should stop immediately to allow the pedestrian to cross safely, as they are in the vehicle's path and may move slowly due to the cane."}
{"id": "train_04885", "split": "train", "clip_key": "titan_clip_758_000024_movie", "source": {"subset": "titan", "scenario": "clip_758", "frame": "000024"}, "frames": ["titan_clip_758_000024_movie_t-3.jpg", "titan_clip_758_000024_movie_t-2.jpg", "titan_clip_758_000024_movie_t-1.jpg", "titan_clip_758_000024_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with a two-lane two-way layout has no physical median; the pavement at the zebra crossing is cracked and patched, and traffic is light with no vehicles close ahead. A pedestrian on the left steps onto the crosswalk and walks rightward across the ego vehicle's path, potentially entering the lane immediately ahead. Far down the roadway a few vehicles move away in the same direction and in the opposite direction without affecting the ego lane. A long construction zone lines the right side with orange netting, barriers, and cones that narrow the roadway, while scaffolding and posts on the left further constrict the curbside.", "hazard_reasoning": "No caption provided. No potential hazards detected, proceed normally."}
{"id": "train_04886", "split": "train", "clip_key": "2020-0205-103411_030143_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "030143"}, "frames": ["2020-0205-103411_030143_movie_t-3.jpg", "2020-0205-103411_030143_movie_t-2.jpg", "2020-0205-103411_030143_movie_t-1.jpg", "2020-0205-103411_030143_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane arterial with metal railings and a separated sidewalk stretches ahead; the dry pavement looks smooth and traffic is light as vehicles slow to a stop at an intersection. A blue sedan directly ahead in the ego lane is stopped at the red light, constraining the ego vehicle. A black van slightly ahead in the right lane waits at the signal beside the ego vehicle, limiting lane-change space. On the left sidewalk, a person walking a bicycle moves forward behind the railing, remaining outside the roadway. An overhead traffic signal shows red.", "hazard_reasoning": "There is a blue sedan stopped in the ego lane. This stopped vehicle poses a risk of rear-end collision if you continue moving, so you should stop to maintain a safe distance."}
{"id": "train_04887", "split": "train", "clip_key": "2020-0205-103411_040920_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "040920"}, "frames": ["2020-0205-103411_040920_movie_t-3.jpg", "2020-0205-103411_040920_movie_t-2.jpg", "2020-0205-103411_040920_movie_t-1.jpg", "2020-0205-103411_040920_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in each direction runs between mid-rise buildings, separated by a rail-lined median with a narrow planted strip. The pavement is dry and in good condition, and traffic in the ego direction is moderate to heavy as vehicles bunch near an intersection beneath an elevated roadway. A black sedan directly ahead in the ego lane slows because of traffic congestion ahead, constraining the ego car's pace. Farther ahead in the same direction, a white box truck creeps toward the junction among queuing cars. To the right, oncoming traffic flows past the median, including a black taxi, but it remains separated by the divider. Overhead blue direction signs indicate routes toward Akabanebashi and nearby areas.", "hazard_reasoning": "A black sedan slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. This indicates increasing congestion ahead and the driver should reduce speed to maintain a safe following distance under these conditions."}
{"id": "train_04888", "split": "train", "clip_key": "2020-0127-132751_028139_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "028139"}, "frames": ["2020-0127-132751_028139_movie_t-3.jpg", "2020-0127-132751_028139_movie_t-2.jpg", "2020-0127-132751_028139_movie_t-1.jpg", "2020-0127-132751_028139_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a planted median and smooth pavement carries moderate two-way traffic; the ego vehicle proceeds in the left lane of its direction. A white hatchback directly ahead in the ego lane travels steadily straight, setting the pace. A white box truck farther ahead in the right lane moves away from the ego car in the same direction, continuing straight without affecting the lane. On the opposite side of the median, several oncoming vehicles, including a van and a truck, advance steadily in their lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04889", "split": "train", "clip_key": "titan_clip_22_000072_movie", "source": {"subset": "titan", "scenario": "clip_22", "frame": "000072"}, "frames": ["titan_clip_22_000072_movie_t-3.jpg", "titan_clip_22_000072_movie_t-2.jpg", "titan_clip_22_000072_movie_t-1.jpg", "titan_clip_22_000072_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop and yield to pedestrian", "environment_perception": "A narrow urban street between tall buildings approaches an unsignalized intersection with a crosswalk; the pavement is smooth and traffic is light. Parked delivery trucks line both curbs, including a large one on the right with its rear door open, slightly narrowing the lane and view. Ahead at the crosswalk, a woman wearing a hat and carrying a handbag crosses from right to left toward the far-left side, potentially entering the ego vehicle's path. On the cross street beyond her, a white car travels left to right through the junction, briefly occupying the space ahead. Farther left beyond the junction, a larger bus-like vehicle proceeds along the cross street with no immediate interaction.", "hazard_reasoning": "There is a woman carrying a handbag, wearing a hat, and crossing to the left side of a crosswalk. The trucks partially obstruct your view, and the pedestrian may enter your lane unexpectedly, so you should stop and yield to the pedestrian."}
{"id": "train_04890", "split": "train", "clip_key": "2020-0226-101332_006208_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "006208"}, "frames": ["2020-0226-101332_006208_movie_t-3.jpg", "2020-0226-101332_006208_movie_t-2.jpg", "2020-0226-101332_006208_movie_t-1.jpg", "2020-0226-101332_006208_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban two-way street with one lane per direction and a solid yellow centerline runs straight between mid-rise buildings; the pavement appears smooth and traffic is light. Near the camera, a black taxi is stopped along the left edge of the ego lane, effectively parked and narrowing the lane. Farther ahead in the same lane, a small white truck travels away at a modest pace, influencing the ego vehicle's speed. In the oncoming lane, a dark car approaches from far ahead and continues straight while staying in its lane. A few other vehicles are parked along the curbs but remain outside the travel lanes.", "hazard_reasoning": "There is a gray truck parked on the left side of the road, in the ego lane. It blocks the driving lane and may force the driver to deviate from the lane, so the driver should manoeuvre carefully around it."}
{"id": "train_04891", "split": "train", "clip_key": "2020-0226-140503_010441_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "010441"}, "frames": ["2020-0226-140503_010441_movie_t-3.jpg", "2020-0226-140503_010441_movie_t-2.jpg", "2020-0226-140503_010441_movie_t-1.jpg", "2020-0226-140503_010441_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego's direction is divided from oncoming traffic by a low hedge median; the pavement is dry and smooth, and traffic is moderate as the road rises gently past an intersection. A silver van ahead in the ego lane drives away from the camera and proceeds through the intersection on a green light, effectively setting the pace. On the left near the curb, a box truck waits just before the crosswalk, remaining out of the ego lane. On the opposite side of the median, a bus and several cars approach in the oncoming lanes, separated from the ego path.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car, because of a green traffic light. The driver should follow the vehicle ahead to maintain safe distance when proceeding through the green signal."}
{"id": "train_04892", "split": "train", "clip_key": "titan_clip_610_000402_movie", "source": {"subset": "titan", "scenario": "clip_610", "frame": "000402"}, "frames": ["titan_clip_610_000402_movie_t-3.jpg", "titan_clip_610_000402_movie_t-2.jpg", "titan_clip_610_000402_movie_t-1.jpg", "titan_clip_610_000402_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian crossing ahead", "environment_perception": "An urban commercial backstreet with brick paving forms a narrow single shared lane with no centerline or divider, and the ego-vehicle moves slowly amid very light traffic with no other vehicles visible. A pedestrian wearing a white shirt is ahead near the middle of the roadway, crossing from the left side toward the right and briefly occupying the ego lane. Another person stands at the left edge by a pole and traffic cones, remaining near the curb without entering the lane. Farther ahead a few pedestrians walk along the street near shops, staying distant and not affecting the path. A blue one-way sign and a no-parking sign are posted on the left, and several cones with a small barricade mark a roadside work area.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and crossing the street, from the left side of the road to the right side. The pedestrian is stepping onto the roadway ahead, so the driver should be aware to prevent any potential collision."}
{"id": "train_04893", "split": "train", "clip_key": "titan_clip_514_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_514_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_514_000198_movie_t-3_augB1.jpg", "titan_clip_514_000198_movie_t-2_augB1.jpg", "titan_clip_514_000198_movie_t-1_augB1.jpg", "titan_clip_514_000198_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "be aware of parked motorcycle", "environment_perception": "A narrow urban backstreet with a single unmarked lane runs between mid-rise buildings; the cobblestone-like pavement has patches and stains, and traffic is light with no moving vehicles. On the right ahead, a yellow motorcycle is parked at the curb, slightly constricting the lane. Two pedestrians on the right sidewalk walk toward the camera near planters, while another person on the left by a storefront stands close to the curb. Farther ahead near the right curb, a cyclist waits beside the roadway. No notable traffic signals or signs are visible, and no oncoming traffic appears.", "hazard_reasoning": "There is a yellow motorcycle parked on the right side of the road. The parked motorcycle may obstruct part of the driving lane or require the driver to adjust position to maintain safe clearance."}
{"id": "train_04894", "split": "train", "clip_key": "2020-0131-135401_031834_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "031834"}, "frames": ["2020-0131-135401_031834_movie_t-3.jpg", "2020-0131-135401_031834_movie_t-2.jpg", "2020-0131-135401_031834_movie_t-1.jpg", "2020-0131-135401_031834_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each way runs between shops and apartments, divided by a solid yellow centerline; the asphalt looks smooth and traffic is light to moderate with a short queue ahead. A white sedan directly ahead in the ego lane slows because of congestion ahead and it sets the ego vehicle's pace. Farther ahead in the same direction, a white van proceeds steadily in the line, maintaining the gap. An oncoming compact car approaches in the right-hand lane and passes by without encroaching on the centerline. Guardrails edge the sidewalks, keeping pedestrians off the roadway and leaving the lane clear.", "hazard_reasoning": "There is a white sedan slowing down in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_04895", "split": "train", "clip_key": "titan_clip_745_000432_movie", "source": {"subset": "titan", "scenario": "clip_745", "frame": "000432"}, "frames": ["titan_clip_745_000432_movie_t-3.jpg", "titan_clip_745_000432_movie_t-2.jpg", "titan_clip_745_000432_movie_t-1.jpg", "titan_clip_745_000432_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian ahead", "environment_perception": "An urban narrow two-way street without a marked centerline, pavement dry and intact; vehicle traffic is light as the car moves slowly among many pedestrians. Ahead in the ego lane, a man wearing black trousers and a black T-shirt, lime shoes, and carrying a handbag walks toward the vehicle and into its path. On the right by the storefront, several pedestrians stand near the curb and a couple edge into the roadway, potentially encroaching on the lane. Farther ahead, a pedestrian walks away along the middle of the street, constraining pace. A white van is parked along the left curb ahead, reducing usable width. A yellow roadside warning sign is visible on a pole.", "hazard_reasoning": "There is a man wearing a pair of black trousers, a black T-shirt, lime shoes, carrying a handbag, walking towards ego lane, in front of the ego car. The pedestrian is walking into the vehicle's path and may step in front of the car, so the driver should yield to prevent a collision."}
{"id": "train_04896", "split": "train", "clip_key": "2020-0129-144857_018539_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "018539"}, "frames": ["2020-0129-144857_018539_movie_t-3.jpg", "2020-0129-144857_018539_movie_t-2.jpg", "2020-0129-144857_018539_movie_t-1.jpg", "2020-0129-144857_018539_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene on a curving two-lane road with a glass sound barrier to the right and storefronts to the left; the pavement is smooth and traffic is moderate but bunches near the bend. A black hatchback directly ahead in the ego lane slows due to congestion, setting the ego vehicle's pace. In the adjacent right lane, a white SUV followed by a box truck also decelerate into the curve, limiting any opportunity to pass. Pedestrians on the left sidewalk remain outside the roadway.", "hazard_reasoning": "There is a black hatchback slowing in front of the ego car in the ego lane, because of traffic congestion. Because the black hatchback is decelerating due to congestion, the driver must slow down to maintain a safe following distance and prevent a collision."}
{"id": "train_04897", "split": "train", "clip_key": "2020-0129-105040_070453_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "070453"}, "frames": ["2020-0129-105040_070453_movie_t-3.jpg", "2020-0129-105040_070453_movie_t-2.jpg", "2020-0129-105040_070453_movie_t-1.jpg", "2020-0129-105040_070453_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down for the cyclist ahead", "environment_perception": "An urban residential two-way road with one narrow lane per direction and a solid centerline stretches ahead, lined by white guardrails; the pavement is dry and intact, and traffic is light. The ego vehicle proceeds in the left lane with no oncoming cars visible. A cyclist in a white dress rides ahead along the left edge away from the camera, keeping near the curb since there is no bicycle lane and moving close to the ego path. Farther ahead, a white van continues in the same lane at a steady pace, leading the vehicles in front of the ego car. The tight guardrails and narrow roadway limit room to maneuver or overtake.", "hazard_reasoning": "There is a cyclist wearing a white dress, cycling on the left side of the road, away from the ego car, because there is no bicycle lane. Slow down because the cyclist is sharing the roadway without a dedicated lane, increasing collision risk."}
{"id": "train_04898", "split": "train", "clip_key": "2020-0204-150838_016101_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "016101"}, "frames": ["2020-0204-150838_016101_movie_t-3.jpg", "2020-0204-150838_016101_movie_t-2.jpg", "2020-0204-150838_016101_movie_t-1.jpg", "2020-0204-150838_016101_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with same-direction traffic passes offices and trees, bordered by a left-side hedge; the pavement is smooth and traffic is heavy in slow-moving queues. A white hatchback is stopped in the ego lane directly ahead, queuing at a red traffic light and holding the ego vehicle. To the right, a white station wagon in the adjacent lane creeps forward past the ego car as its lane inches ahead. Farther ahead in the right lanes, several taxis advance slowly, maintaining a parallel queue that does not enter the ego lane. Overhead blue direction boards display lane arrows for left turn and straight toward Nihonbashi, Hibiya, Akabanebashi, and Sakuradamon.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver needs to stop promptly to maintain a safe distance and comply with the traffic signal."}
{"id": "train_04899", "split": "train", "clip_key": "titan_clip_964_000192_movie", "source": {"subset": "titan", "scenario": "clip_964", "frame": "000192"}, "frames": ["titan_clip_964_000192_movie_t-3.jpg", "titan_clip_964_000192_movie_t-2.jpg", "titan_clip_964_000192_movie_t-1.jpg", "titan_clip_964_000192_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down and watch for pedestrians.", "environment_perception": "An urban commercial street features a narrow unmarked two-way road without a median, smooth pavement, and very light traffic with no vehicles ahead or oncoming. Ahead on the left side of the road, a pedestrian in a white shirt walks away from the ego vehicle along the roadway, occupying part of the lane and potentially constraining the pace. Near the left curb by a storefront, another person pauses beside a cone and a bag at the edge and may step into the lane. Along the right curb, a parked bicycle with a basket protrudes slightly into the roadway, narrowing clearance. No salient signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and white pants walking away from the ego car on the left side of the road. The pedestrian may suddenly change direction or step into the path of the ego vehicle, so the driver should reduce speed to maintain a safe distance and react promptly."}
{"id": "train_04900", "split": "train", "clip_key": "2020-0131-135401_084744_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "084744"}, "frames": ["2020-0131-135401_084744_movie_t-3.jpg", "2020-0131-135401_084744_movie_t-2.jpg", "2020-0131-135401_084744_movie_t-1.jpg", "2020-0131-135401_084744_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban divided road with two lanes in the ego direction runs between shops and mid-rise buildings, separated from oncoming traffic by a fenced median; the asphalt looks smooth and traffic is slow and queued. A white van is stopped directly ahead in the ego lane because the signal in the distance shows red, holding the ego car. In the adjacent left lane, a dark minivan slightly ahead is also stopped at the light, queuing beside the ego vehicle. On the far side of the median, oncoming cars move past to the right with no interaction. No obstacles or work zones are visible.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The ego vehicle must stop to avoid rear-ending the halted van and comply with the traffic signal."}
{"id": "train_04901", "split": "train", "clip_key": "2020-0129-105040_054338_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "054338"}, "frames": ["2020-0129-105040_054338_movie_t-3.jpg", "2020-0129-105040_054338_movie_t-2.jpg", "2020-0129-105040_054338_movie_t-1.jpg", "2020-0129-105040_054338_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban Japanese arterial runs under an elevated expressway, curving gently right with two same-direction lanes, a left guardrail and a right curb beside a fenced green area; the wet pavement looks smooth and traffic is light. A white van ahead in the ego lane proceeds steadily toward the bend, maintaining a moderate gap and setting the pace. Farther ahead in the same lane, a small box truck continues in line toward the distant junction, further constraining the ego vehicle's speed. A signalized intersection is visible ahead beneath the structure, and no oncoming traffic, pedestrians, or cyclists appear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04902", "split": "train", "clip_key": "titan_clip_513_000348_movie", "source": {"subset": "titan", "scenario": "clip_513", "frame": "000348"}, "frames": ["titan_clip_513_000348_movie_t-3.jpg", "titan_clip_513_000348_movie_t-2.jpg", "titan_clip_513_000348_movie_t-1.jpg", "titan_clip_513_000348_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban street with mid-rise buildings narrows to a single lane as the ego vehicle approaches a zebra crossing; the pavement looks smooth and traffic is light with no moving cars. Ahead in the center of the lane, a pedestrian pushes a blue cart and walks toward the ego vehicle, occupying the travel path and constraining its pace. On the left sidewalk near the storefronts, several pedestrians walk in the same direction toward the crosswalk while staying off the roadway. Farther ahead by the right curb, another person stands near parked bicycles and blue cones without entering the lane. The zebra crossing is clearly marked, and no traffic signals are visible.", "hazard_reasoning": "There is a pedestrian walking in the middle of the road, pushing a blue cart, heading toward the ego car. The pedestrian's position and trajectory create a collision risk, so the driver should reduce speed to avoid impact under this situation."}
{"id": "train_04903", "split": "train", "clip_key": "2020-0131-135401_041968_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "041968"}, "frames": ["2020-0131-135401_041968_movie_t-3.jpg", "2020-0131-135401_041968_movie_t-2.jpg", "2020-0131-135401_041968_movie_t-1.jpg", "2020-0131-135401_041968_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop before reaching the halted hatchback", "environment_perception": "An urban commercial street carries two same-direction lanes including a right-turn lane beside a single oncoming lane, with no median and dry pavement; traffic is moderate and bunched at a signal. A white hatchback directly ahead in the ego lane is stopped at the red light, holding the ego car. A small red van slightly ahead to the left waits in the adjacent same-direction lane for the same light. An oncoming white van travels past through the intersection in the opposite lane. Overhead traffic lights display red for the ego approach.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because of the red traffic lights. The driver must stop promptly to avoid colliding with the halted vehicle at the red light."}
{"id": "train_04904", "split": "train", "clip_key": "2020-0129-105040_048202_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "048202"}, "frames": ["2020-0129-105040_048202_movie_t-3.jpg", "2020-0129-105040_048202_movie_t-2.jpg", "2020-0129-105040_048202_movie_t-1.jpg", "2020-0129-105040_048202_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with three same-direction lanes bounded by guardrails and smooth, dry pavement; traffic is light and flows steadily. A white van ahead in the ego lane drives away from the camera as traffic ahead moves, gradually increasing the gap. A large white box truck occupies the far-left lane near the curb and stays alongside without merging, leaving the center lane clear. Farther ahead, a few cars continue in the middle and right lanes at similar speed with ample spacing. Overhead blue direction signs are visible above the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04905", "split": "train", "clip_key": "titan_clip_1015_000468_movie", "source": {"subset": "titan", "scenario": "clip_1015", "frame": "000468"}, "frames": ["titan_clip_1015_000468_movie_t-3.jpg", "titan_clip_1015_000468_movie_t-2.jpg", "titan_clip_1015_000468_movie_t-1.jpg", "titan_clip_1015_000468_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban commercial street with an undivided single lane each direction is seen from a front-facing car in the left lane; pavement is smooth and motor traffic is light while pedestrian activity is heavy. Ahead at a zebra crosswalk, many pedestrians stream across both directions, controlling the car's pace. A pedestrian in a white shirt and black pants walks from the left to the right side within the crosswalk directly ahead, potentially entering the car's path. On the left edge near the crosswalk, a white truck stands or creeps forward, narrowing space and partly blocking sight lines to the oncoming side. Several people wait along the right sidewalk near a guardrail as if preparing to cross. A blue pedestrian crossing sign is visible above the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and crossing the street at a crosswalk, from the left to the right side. The driver should slow down to allow the pedestrian to cross safely and avoid potential collision."}
{"id": "train_04906", "split": "train", "clip_key": "2020-0220-102630_027987_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "027987"}, "frames": ["2020-0220-102630_027987_movie_t-3.jpg", "2020-0220-102630_027987_movie_t-2.jpg", "2020-0220-102630_027987_movie_t-1.jpg", "2020-0220-102630_027987_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with two same-direction lanes runs between mid-rise buildings; the pavement looks smooth and traffic is moderate. Ahead in the ego lane, a gray box truck begins shifting right to change lanes in front of the ego car. In the right lane, a white car travels alongside near the truck, reducing the available gap for the merge. Oncoming traffic includes a white van approaching beyond the center line but remaining separated. The left lane shows a dedicated-use marking on the pavement.", "hazard_reasoning": "There is a gray truck lane changing in front of the ego car, from the ego lane to the right lane. The truck's lane change could encroach on the driver's path unexpectedly, so the driver should slow down to maintain a safe distance under this situation."}
{"id": "train_04907", "split": "train", "clip_key": "titan_clip_667_000450_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_667_000450_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_667_000450_movie_t-3_augB1.jpg", "titan_clip_667_000450_movie_t-2_augB1.jpg", "titan_clip_667_000450_movie_t-1_augB1.jpg", "titan_clip_667_000450_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian crossing", "environment_perception": "An urban two-way back street with a single narrow lane and no median runs past small shops; the pavement is smooth and vehicular traffic is light with no other cars visible. On the right ahead, a pedestrian carrying an umbrella walks away from the ego vehicle in the roadway because a parked motorcycle blocks her path, and she may edge into the ego lane. On the near right, a woman walks toward the camera along the curb, narrowing the available space beside the ego vehicle. Farther ahead near the center, several pedestrians drift along and intermittently cross the lane, collectively constraining the pace. Parked scooters and storefronts line the right side and encroach slightly on the carriageway, while a narrow green shoulder runs along the left.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and walking on the right side of the road, away from the ego car, because a parked motorcycle is blocking her path. The driver should slow down because the pedestrian may step into the travel lane to avoid the obstruction."}
{"id": "train_04908", "split": "train", "clip_key": "2020-0127-132751_032163_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "032163"}, "frames": ["2020-0127-132751_032163_movie_t-3.jpg", "2020-0127-132751_032163_movie_t-2.jpg", "2020-0127-132751_032163_movie_t-1.jpg", "2020-0127-132751_032163_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road in a depressed corridor passes under an overpass; the ego travels in a single lane bordered by a raised median on the right with smooth, dry pavement and light traffic. A white box truck ahead in the ego lane slows gradually, constraining the ego vehicle's pace. On the opposing carriageway to the right, a white car approaches in its lane, separated by the median and not interacting. A short merge lane opens on the left but is empty.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The truck's deceleration could require sudden braking by the driver, so slow down to maintain a safe following distance."}
{"id": "train_04909", "split": "train", "clip_key": "2020-0228-102841_019829_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "019829"}, "frames": ["2020-0228-102841_019829_movie_t-3.jpg", "2020-0228-102841_019829_movie_t-2.jpg", "2020-0228-102841_019829_movie_t-1.jpg", "2020-0228-102841_019829_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop behind the motorcycle.", "environment_perception": "An urban multi-lane intersection with smooth pavement and no center divider lies ahead, with moderate traffic; same-direction vehicles are queued at the stop line while cross traffic proceeds. Ahead in the ego lane, a black motorcycle is stopped at the line waiting at a red light, directly in front of the ego car. Left-front in the crosswalk, a cyclist rides rightward across the ego lane and continues through the junction, occupying space the ego would take when the signal changes. Several pedestrians move across the zebra crossing ahead, walking steadily through the ego path and keeping the queue stationary.", "hazard_reasoning": "There is a black motorcycle stopped in the ego lane in front of the ego car, because of the red traffic light. The motorcycle is stopped ahead at the red signal, so you must stop to maintain safe distance and avoid collision."}
{"id": "train_04910", "split": "train", "clip_key": "2020-0207-151349_072666_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "072666"}, "frames": ["2020-0207-151349_072666_movie_t-3.jpg", "2020-0207-151349_072666_movie_t-2.jpg", "2020-0207-151349_072666_movie_t-1.jpg", "2020-0207-151349_072666_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban scene shows a single-lane road running alongside a concrete barrier above a lower carriageway, with smooth pavement and light traffic as an elevated overpass looms ahead. A black van directly ahead in the ego lane is stopped at a red traffic light, holding the ego vehicle, its brake lamps glowing. The red signal is visible at the junction ahead and no other vehicles appear to enter the lane. Cones line the left curb, and the barrier on the right creates a narrow corridor with limited room at the edge.", "hazard_reasoning": "There is a black van stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_04911", "split": "train", "clip_key": "titan_clip_745_000432_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_745_000432_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_745_000432_movie_t-3_augB1.jpg", "titan_clip_745_000432_movie_t-2_augB1.jpg", "titan_clip_745_000432_movie_t-1_augB1.jpg", "titan_clip_745_000432_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian ahead", "environment_perception": "An urban narrow two-way street without a marked centerline, pavement dry and intact; vehicle traffic is light as the car moves slowly among many pedestrians. Ahead in the ego lane, a man wearing black trousers and a black T-shirt, lime shoes, and carrying a handbag walks toward the vehicle and into its path. On the right by the storefront, several pedestrians stand near the curb and a couple edge into the roadway, potentially encroaching on the lane. Farther ahead, a pedestrian walks away along the middle of the street, constraining pace. A white van is parked along the left curb ahead, reducing usable width. A yellow roadside warning sign is visible on a pole.", "hazard_reasoning": "There is a man wearing a pair of black trousers, a black T-shirt, lime shoes, carrying a handbag, walking towards ego lane, in front of the ego car. The pedestrian is walking into the vehicle's path and may step in front of the car, so the driver should yield to prevent a collision."}
{"id": "train_04912", "split": "train", "clip_key": "titan_clip_1219_000492_movie", "source": {"subset": "titan", "scenario": "clip_1219", "frame": "000492"}, "frames": ["titan_clip_1219_000492_movie_t-3.jpg", "titan_clip_1219_000492_movie_t-2.jpg", "titan_clip_1219_000492_movie_t-1.jpg", "titan_clip_1219_000492_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped white sedan", "environment_perception": "An urban narrow two-way street with curbs and smooth asphalt runs between midrise buildings, and the ego vehicle travels in the left lane with light traffic and no vehicles immediately ahead. On a side street to the left near mid-distance, a white sedan is stopped at the mouth of the intersection, positioned to enter the ego lane. On the right foreground beside a red building, a person handles a signboard next to a parked bicycle at the curb, close to the roadway. Farther ahead along the left sidewalk, two pedestrians stand by a building and a bicycle, remaining off the road. A silver car is parked nose-out in a right-side driveway.", "hazard_reasoning": "There is a white sedan stopped on an adjacent street to the left. The stopped white sedan may enter the roadway or obscure visibility, so the driver should be aware to anticipate its actions."}
{"id": "train_04913", "split": "train", "clip_key": "titan_clip_208_000564_movie", "source": {"subset": "titan", "scenario": "clip_208", "frame": "000564"}, "frames": ["titan_clip_208_000564_movie_t-3.jpg", "titan_clip_208_000564_movie_t-2.jpg", "titan_clip_208_000564_movie_t-1.jpg", "titan_clip_208_000564_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way street with one narrow lane per direction runs between mid-rise buildings; the pavement is dry and smooth, and traffic is light to moderate at a slow pace. A white kei van ahead in the ego lane proceeds straight and constrains speed, with another small truck farther ahead in the same direction. At the left edge a white car noses out from a side space near the curb, paused and potentially entering the ego lane. On the right side of the road, a pedestrian wearing a black dress and carrying an umbrella walks away along the sidewalk parallel to traffic. Parked cars line the right curb near shopfronts, tightening the corridor.", "hazard_reasoning": "There is a pedestrian wearing a black dress carrying an umbrella walking away from the ego car on the right side of the road. The pedestrian is close to the travel lane and may unpredictably enter the vehicle's path, so the driver should manoeuvre carefully around the pedestrian to maintain a safe buffer."}
{"id": "train_04914", "split": "train", "clip_key": "2020-0228-150133_057373_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "057373"}, "frames": ["2020-0228-150133_057373_movie_t-3.jpg", "2020-0228-150133_057373_movie_t-2.jpg", "2020-0228-150133_057373_movie_t-1.jpg", "2020-0228-150133_057373_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with multiple same-direction lanes and a right-side guardrail has smooth pavement and dense traffic queuing at an intersection; flow is heavy and largely stationary. Directly ahead, a black sedan in the ego lane is stopped because the overhead signal is red, keeping the ego vehicle halted. To the left, a white kei van alongside inches forward in the adjacent lane, narrowing the gap beside the ego vehicle. Farther ahead, a beige city bus and several vans wait in the queue in the same direction, setting the pace for the line of cars. The signal remains red as the scene holds, and no oncoming traffic is visible.", "hazard_reasoning": "There is a black sedan stopped in the ego lane because of a red traffic light ahead. Drivers should stop to avoid a rear-end collision with the stopped sedan at the red light."}
{"id": "train_04915", "split": "train", "clip_key": "titan_clip_337_000432_movie", "source": {"subset": "titan", "scenario": "clip_337", "frame": "000432"}, "frames": ["titan_clip_337_000432_movie_t-3.jpg", "titan_clip_337_000432_movie_t-2.jpg", "titan_clip_337_000432_movie_t-1.jpg", "titan_clip_337_000432_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "An urban shopping street with a single narrow undivided lane paved with blocks shows light, slow traffic. A white van is parked on the left side of the road near the ego-vehicle, standing at the curb and narrowing the usable lane. Several pedestrians are ahead in the roadway, some crossing from left to right and others walking toward the camera along the center, so the ego vehicle approaches at reduced speed. Farther ahead in the same lane, a small white delivery truck proceeds slowly amid the foot traffic, further limiting the pace. No traffic signals or posted speeds are clearly visible in this segment.", "hazard_reasoning": "There is a white van parked on the left side of the road. The parked van narrows the drivable lane, requiring you to manoeuvre carefully to avoid a collision."}
{"id": "train_04916", "split": "train", "clip_key": "2020-0203-154554_073701_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_073701_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_073701_movie_t-3_augB1.jpg", "2020-0203-154554_073701_movie_t-2_augB1.jpg", "2020-0203-154554_073701_movie_t-1_augB1.jpg", "2020-0203-154554_073701_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction and no median leads into a signalized intersection; the pavement is dry and traffic is moderate, moving slowly in a short queue. A black motorcycle advances along the left side near the ego front and enters the left lane, filtering toward the space between a red hatchback ahead and a light van, which may place it in the ego path. The red hatchback directly ahead in the ego lane creeps toward the junction and sets the pace for the ego vehicle. Oncoming white vans travel through the intersection on the right side of the road without affecting the ego lane. Low sun glare faces the camera.", "hazard_reasoning": "There is a black motorcycle driving in the left lane, toward the space between two vehicles. The motorcycle is merging into your lane ahead, so you should slow down to maintain a safe following distance under this situation."}
{"id": "train_04917", "split": "train", "clip_key": "titan_clip_258_000618_movie", "source": {"subset": "titan", "scenario": "clip_258", "frame": "000618"}, "frames": ["titan_clip_258_000618_movie_t-3.jpg", "titan_clip_258_000618_movie_t-2.jpg", "titan_clip_258_000618_movie_t-1.jpg", "titan_clip_258_000618_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrians", "environment_perception": "A narrow urban two-way residential street with no centerline and smooth pavement shows light traffic as the ego vehicle approaches a small cross intersection. A construction site wrapped in blue mesh lines the right curb with cones and barriers, slightly narrowing the lane, and a roadside convex mirror stands at the left corner. Two pedestrians stand together on the left edge of the ego lane talking near the curb just ahead, lingering in the travel path and constraining the approach. No other vehicles are visible ahead or oncoming during the brief sequence.", "hazard_reasoning": "There are two pedestrians talking in a group, standing on the left side of the road, in the ego lane. They occupy the driving lane and could inadvertently step into the vehicle's path, so the driver should manoeuvre around them to avoid a collision."}
{"id": "train_04918", "split": "train", "clip_key": "titan_clip_416_000378_movie", "source": {"subset": "titan", "scenario": "clip_416", "frame": "000378"}, "frames": ["titan_clip_416_000378_movie_t-3.jpg", "titan_clip_416_000378_movie_t-2.jpg", "titan_clip_416_000378_movie_t-1.jpg", "titan_clip_416_000378_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on left side.", "environment_perception": "An urban low-speed shared street with light block pavement and no centerline runs between shops on the left and a tree-lined walkway with bollards on the right; traffic is light as the ego vehicle proceeds straight. A small black car ahead in the same lane moves away slowly and sets the pace. On the left side close to the travel path, two pedestrians, one shading with an umbrella, walk toward the camera and briefly narrow the available space. Farther ahead on the left, a man in a gray shirt and jeans walks away from the ego car along the roadway edge, staying near the side. No prominent signals or posted speeds are visible.", "hazard_reasoning": "There is a man wearing a gray shirt and jeans and walking on the left side of the road, away from the ego car. The driver should be aware since the pedestrian is walking on the roadway and may enter the vehicle's path."}
{"id": "train_04919", "split": "train", "clip_key": "titan_clip_999_000252_movie", "source": {"subset": "titan", "scenario": "clip_999", "frame": "000252"}, "frames": ["titan_clip_999_000252_movie_t-3.jpg", "titan_clip_999_000252_movie_t-2.jpg", "titan_clip_999_000252_movie_t-1.jpg", "titan_clip_999_000252_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the stopped truck", "environment_perception": "A narrow urban back street lined with buildings has no centerline, the pavement is dry and smooth, and traffic is light. A white truck is stopped ahead on the right side of the road, partially protruding into the travel way and narrowing the passage. A cyclist rides away near the center of the lane ahead, in the ego path and reducing available clearance. Farther ahead, a small silver van continues in the same direction at low speed. Parked scooters and bicycles line the right curb near the ego vehicle, further tightening the corridor.", "hazard_reasoning": "There is a white truck stopped, in front of the ego car, on the right side of the road. The stopped truck partially obstructs the right lane, limiting visibility and posing a collision risk; the driver should manoeuvre carefully around it to maintain a safe distance."}
{"id": "train_04920", "split": "train", "clip_key": "2020-0227-153144_016638_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "016638"}, "frames": ["2020-0227-153144_016638_movie_t-3.jpg", "2020-0227-153144_016638_movie_t-2.jpg", "2020-0227-153144_016638_movie_t-1.jpg", "2020-0227-153144_016638_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with two same-direction lanes and a low planted median appears, the pavement dry and smooth, and traffic is moderate to heavy with a slow patch ahead. A white minivan directly ahead in the ego lane slows due to congestion further up, setting the pace for the ego vehicle. A dark sedan near the left curb slightly ahead inches outward as if merging, potentially entering the ego lane. In the adjacent right lane a small truck continues forward at a steady speed parallel to the ego car. On the opposite side of the median, oncoming traffic moves continuously through the corridor of mid-rise buildings.", "hazard_reasoning": "There is a white minivan slowing down in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a collision due to the buildup of traffic."}
{"id": "train_04921", "split": "train", "clip_key": "titan_clip_756_000048_movie", "source": {"subset": "titan", "scenario": "clip_756", "frame": "000048"}, "frames": ["titan_clip_756_000048_movie_t-3.jpg", "titan_clip_756_000048_movie_t-2.jpg", "titan_clip_756_000048_movie_t-1.jpg", "titan_clip_756_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban intersection on a narrow side street without a center divider is shown, the pavement slightly worn and marked with zebra crossings, and overall vehicle traffic appears light. A pedestrian wearing a brown backpack walks away from the ego vehicle straight ahead in the lane, remaining in the ego path. Two other pedestrians cross from right to left on the crosswalk ahead, moving across the ego lane and passing close to the camera. Another person stands near the left curb by the corner. A do-not-enter sign marks the left-side branch, and several orange traffic cones line the left edge near the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a brown backpack, walking away from the ego car, in front of the ego car. The driver should be aware of the pedestrian moving ahead to maintain a safe distance and avoid potential collision."}
{"id": "train_04922", "split": "train", "clip_key": "titan_clip_1128_000408_movie", "source": {"subset": "titan", "scenario": "clip_1128", "frame": "000408"}, "frames": ["titan_clip_1128_000408_movie_t-3.jpg", "titan_clip_1128_000408_movie_t-2.jpg", "titan_clip_1128_000408_movie_t-1.jpg", "titan_clip_1128_000408_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrians", "environment_perception": "An urban residential street with a narrow two-way carriageway, no median, and smooth pavement is shown, and traffic is light with no vehicles in either direction. On the right side ahead, two women walk toward the ego car along the edge of the road, close to the travel lane and may enter its path. On the left shoulder close by, a backpacked pedestrian walks away in the same direction along the red margin, near the lane and constraining pace. Farther ahead near the left curb, another person stands by the roadway. Trees overhang and a guardrail lines the right side beside a green strip.", "hazard_reasoning": "There are two women walking on the right side of the road, toward the ego car. The driver should yield because these pedestrians may step into the roadway unexpectedly, requiring reduced speed and increased attention."}
{"id": "train_04923", "split": "train", "clip_key": "titan_clip_379_000024_movie", "source": {"subset": "titan", "scenario": "clip_379", "frame": "000024"}, "frames": ["titan_clip_379_000024_movie_t-3.jpg", "titan_clip_379_000024_movie_t-2.jpg", "titan_clip_379_000024_movie_t-1.jpg", "titan_clip_379_000024_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban side street lined with shops; the ego vehicle proceeds along a narrow single mixed-traffic lane with no centerline or median on a block-paved surface, and motor traffic is very light. A pedestrian in a blue shirt on the right walks toward the ego car along the roadway edge and may enter the vehicle's path. On the left foreground, a person with a backpack walks toward the ego vehicle near the curb, staying at the edge but close to the lane. Farther ahead in the center of the lane, another pedestrian moves away in the same direction as traffic, constraining the approach. A silver car is parked on the left beside the sidewalk, and shop signs narrow the margins.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and walking on the right side of the road, toward the ego car. The pedestrian is walking toward the vehicle and may step into its path; manoeuvre carefully around them to avoid collision."}
{"id": "train_04924", "split": "train", "clip_key": "2020-0217-110854_055206_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "055206"}, "frames": ["2020-0217-110854_055206_movie_t-3.jpg", "2020-0217-110854_055206_movie_t-2.jpg", "2020-0217-110854_055206_movie_t-1.jpg", "2020-0217-110854_055206_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban single-lane-each-way road runs under an elevated expressway, bordered by concrete walls and guardrails; the surface is smooth and the lane climbs gently while curving right, with light traffic. A white kei van ahead in the ego lane travels steadily uphill near the centerline, slightly constraining the ego vehicle's pace but keeping a clear gap. No oncoming vehicles appear in the opposite lane, and the parallel roadway beyond the right guardrail remains empty. A large merge-style arrow painted on the ego lane signals that traffic may join from the right ahead. Overhead pillars throw alternating shadows, and there are no pedestrians, cyclists, or parked vehicles.", "hazard_reasoning": "No hazards are present, so the driver can continue driving normally."}
{"id": "train_04925", "split": "train", "clip_key": "titan_clip_725_000186_movie", "source": {"subset": "titan", "scenario": "clip_725", "frame": "000186"}, "frames": ["titan_clip_725_000186_movie_t-3.jpg", "titan_clip_725_000186_movie_t-2.jpg", "titan_clip_725_000186_movie_t-1.jpg", "titan_clip_725_000186_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single forward lane and no divider runs between buildings, the pavement smooth and traffic light as the ego approaches a small cross street. Ahead in the middle of the lane, a pedestrian wearing a black shirt and shorts walks away from the ego vehicle toward the intersection, occupying the lane and constraining the approach. A silver van is parked on the left beside a shopfront and several bicycles line the curb, but they remain clear of the travel lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and shorts, walking away from the ego car and ahead of it in the middle of the road. The pedestrian is crossing within the vehicle's path and may not be visible until the last moment, so the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_04926", "split": "train", "clip_key": "2020-0210-101957_024685_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "024685"}, "frames": ["2020-0210-101957_024685_movie_t-3.jpg", "2020-0210-101957_024685_movie_t-2.jpg", "2020-0210-101957_024685_movie_t-1.jpg", "2020-0210-101957_024685_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multilane arterial with good pavement runs straight past mid-rise buildings, with two same-direction lanes to the left of a painted median and light traffic moving smoothly toward an intersection. A black motorcycle ahead in the ego lane rides away from the camera, accelerating toward the junction as the signal shows green. In the adjacent right lane, a black minivan slightly ahead continues straight at a similar pace, influencing the ego vehicle's speed. In the opposite lanes to the right, a white SUV approaches through the intersection as oncoming traffic but remains separated by the median and does not interact.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane, away from the ego car, because of the green traffic lights. The green signal change means vehicles will start moving, so you should follow the vehicle ahead to maintain safe traffic flow and avoid abrupt stops."}
{"id": "train_04927", "split": "train", "clip_key": "2020-0129-144857_075152_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "075152"}, "frames": ["2020-0129-144857_075152_movie_t-3.jpg", "2020-0129-144857_075152_movie_t-2.jpg", "2020-0129-144857_075152_movie_t-1.jpg", "2020-0129-144857_075152_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial with a guardrail median and dry pavement carries heavy, stop-and-go traffic that slowly begins to move. Directly ahead in the ego lane, a sedan pulls away from a stop and accelerates gently as congestion eases, setting the ego vehicle's pace. Slightly ahead to the left, a white hatchback advances in its lane alongside the ego path, keeping position within the queue and limiting room to merge. Farther ahead, a box truck and several cars remain bunched in the same direction, sustaining the bottleneck.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04928", "split": "train", "clip_key": "2020-0214-102601_078931_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0214-102601_078931_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0214-102601_078931_movie_t-3_augB1.jpg", "2020-0214-102601_078931_movie_t-2_augB1.jpg", "2020-0214-102601_078931_movie_t-1_augB1.jpg", "2020-0214-102601_078931_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Start moving", "environment_perception": "A narrow urban two-way street with one lane per direction runs past storefronts, with smooth pavement, a green painted shoulder on the left, and an orange centerline; traffic is slow-moving. Directly ahead in the ego lane, a gray SUV starts to roll forward because a white box truck farther ahead resumes creeping, so the SUV follows at its pace. The white truck continues slowly along the same lane near the roadside market, constraining the queue. On the left beside the shop, the gray SUV is positioned ahead of the ego car and begins to move with the traffic.", "hazard_reasoning": "There is a gray SUV starting to move in front of the ego car in the ego lane because of the truck ahead. The driver should start moving to maintain safe following distance and keep traffic flowing smoothly."}
{"id": "train_04929", "split": "train", "clip_key": "titan_clip_613_000210_movie", "source": {"subset": "titan", "scenario": "clip_613", "frame": "000210"}, "frames": ["titan_clip_613_000210_movie_t-3.jpg", "titan_clip_613_000210_movie_t-2.jpg", "titan_clip_613_000210_movie_t-1.jpg", "titan_clip_613_000210_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban one-lane side street with a paver surface runs between buildings, with no divider or sidewalks, and traffic is light. A zebra crossing and intersecting street are visible ahead. Ahead in the center of the lane, a pedestrian in a cap, red T-shirt, and blue shorts walks away from the ego car while talking with a nearby group because there is no sidewalk, narrowing the path. The rest of the group lingers at the left edge of the lane and occasionally steps into it, potentially constraining the vehicle's pace. Farther ahead at the crosswalk, a person crosses from right to left and may enter the vehicle's line of travel. A small van stands near the intersection on the left, reducing clearance.", "hazard_reasoning": "There is a pedestrian talking in a group, wearing a cap, wearing a red t-shirt, and wearing blue shorts, walking in the middle of the road, away from the ego car because there is no sidewalk. Because the pedestrian occupies the roadway with no safe walkway, the driver must carefully manoeuvre around them to avoid collision."}
{"id": "train_04930", "split": "train", "clip_key": "2020-0210-155354_020269_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "020269"}, "frames": ["2020-0210-155354_020269_movie_t-3.jpg", "2020-0210-155354_020269_movie_t-2.jpg", "2020-0210-155354_020269_movie_t-1.jpg", "2020-0210-155354_020269_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the stopped van.", "environment_perception": "An urban two-way street with a solid yellow centerline and a chevron-painted median curves gently right on smooth pavement, and traffic is light. Ahead in the ego lane, a white van proceeds at a steady pace, effectively setting our speed. To its right, there is a white van stopped in the right-side lane beside the painted median, blocking that lane. In the opposite direction, a scooter rides toward us in the oncoming lane near the curb and continues past without conflict. Orange construction netting and barriers line the right sidewalk.", "hazard_reasoning": "There is a white van stopped in the right lane. The driver should manoeuvre around this vehicle to avoid collision and maintain safe clearance."}
{"id": "train_04931", "split": "train", "clip_key": "2020-0131-135401_008242_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008242"}, "frames": ["2020-0131-135401_008242_movie_t-3.jpg", "2020-0131-135401_008242_movie_t-2.jpg", "2020-0131-135401_008242_movie_t-1.jpg", "2020-0131-135401_008242_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with stopped truck", "environment_perception": "A narrow urban street with no median and dry pavement appears lightly trafficked, though the ego lane is blocked. Directly ahead in the ego lane, a white box truck is stopped in front of the car, preventing forward movement. On the left near the curb, a pedestrian stands beside parked vans near the truck's rear, close to the travel lane and relevant to the ego vehicle's path. Several small vans are parked along the left shoulder, constricting the corridor, while a guardrail and strong sun glare occupy the right side.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The driver should stop immediately to avoid a collision with the stopped truck."}
{"id": "train_04932", "split": "train", "clip_key": "titan_clip_127_000288_movie", "source": {"subset": "titan", "scenario": "clip_127", "frame": "000288"}, "frames": ["titan_clip_127_000288_movie_t-3.jpg", "titan_clip_127_000288_movie_t-2.jpg", "titan_clip_127_000288_movie_t-1.jpg", "titan_clip_127_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single lane each direction and no median stretches ahead; the pavement is smooth and traffic is light with only a few vehicles visible. A pedestrian in a white shirt and white pants crosses directly in front of the ego car from left to right through the intersection, briefly blocking the ego lane. A white van ahead in the ego lane sits stopped near the left-side curb, reducing available space. Oncoming cars move farther down the road along the opposite lane without interacting with the ego path. Additional pedestrians wait at the left corner and along the right sidewalk but remain off the roadway, while bicycles are parked on the right.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and white pants, crossing the street in front of the ego car, from the left side of the street to the right side. The driver should slow down to allow enough reaction time and yield safely as the pedestrian crosses the vehicle's path."}
{"id": "train_04933", "split": "train", "clip_key": "2020-0226-140503_020121_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "020121"}, "frames": ["2020-0226-140503_020121_movie_t-3.jpg", "2020-0226-140503_020121_movie_t-2.jpg", "2020-0226-140503_020121_movie_t-1.jpg", "2020-0226-140503_020121_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban two-way street with one lane each way and a solid center line appears, the pavement damp under overcast skies as the ego vehicle approaches a signalized intersection with a zebra crossing; traffic is light. Ahead on the left curb, a white truck is parked near the crosswalk, narrowing the ego lane. At the right corner, two pedestrians with umbrellas wait, and one begins to step onto the crosswalk, which may enter the ego lane. Far ahead in the opposite lane, a white car approaches through the intersection while remaining in its lane.", "hazard_reasoning": "There is a white truck parked on the left side of the road. The parked truck may obstruct lane usage and reduce visibility of pedestrians, so the driver should carefully manoeuvre around it."}
{"id": "train_04934", "split": "train", "clip_key": "titan_clip_522_000096_movie", "source": {"subset": "titan", "scenario": "clip_522", "frame": "000096"}, "frames": ["titan_clip_522_000096_movie_t-3.jpg", "titan_clip_522_000096_movie_t-2.jpg", "titan_clip_522_000096_movie_t-1.jpg", "titan_clip_522_000096_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban shopping street with a single narrow two-way road lacks a center line; the pavement is dry and intact and traffic is light, with no oncoming vehicles visible. Far ahead on the left, a white truck is parked in the ego lane while being unloaded, jutting into the roadway and narrowing the passage. A cyclist ahead slightly right rides away near the middle of the road toward the truck and may shift right to pass, which can constrain the ego vehicle's pace. A pedestrian walks along the right sidewalk by the shopfronts without stepping into the roadway.", "hazard_reasoning": "There is a white truck parked on the left side of the road, in the ego lane, because it is being unloaded. The parked truck occupies the driving lane and obstructs the path, so the driver should manoeuvre carefully around it to avoid a collision."}
{"id": "train_04935", "split": "train", "clip_key": "2020-0214-102601_008210_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "008210"}, "frames": ["2020-0214-102601_008210_movie_t-3.jpg", "2020-0214-102601_008210_movie_t-2.jpg", "2020-0214-102601_008210_movie_t-1.jpg", "2020-0214-102601_008210_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the bus", "environment_perception": "An urban two-way road with one lane in each direction curves gently right; there is no median, the pavement is dry and smooth, and traffic is light to moderate with steady flow. Ahead in the ego lane, a small white truck travels at a moderate speed and sets the pace. Farther ahead on the left side of the road, a green bus is stopped beside the curb, creating a stationary roadside obstruction near the ego lane. In the opposing lane to the right, a white van approaches and passes while staying in its lane. A circular 40 sign is visible overhead indicating the speed limit. A parked silver van remains in a bay on the left.", "hazard_reasoning": "There is a green bus stopped at the left side of the road. This bus obstructs the left lane and could pull away or block the path, so the driver should manoeuvre carefully around it to avoid potential collision."}
{"id": "train_04936", "split": "train", "clip_key": "2020-0129-144857_045524_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "045524"}, "frames": ["2020-0129-144857_045524_movie_t-3.jpg", "2020-0129-144857_045524_movie_t-2.jpg", "2020-0129-144857_045524_movie_t-1.jpg", "2020-0129-144857_045524_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the truck", "environment_perception": "An urban multi-lane arterial runs under elevated expressways, with smooth pavement and a metal guardrail separating lanes on the right; traffic is heavy and queued at a signal. Directly ahead in the ego lane, a silver box truck is stopped for a red light, holding the ego vehicle at the line. To the left, several white vans and cars wait in the adjacent same-direction lane, creeping slightly as space opens, which keeps overall pace slow. On the separated right carriageway, a red car moves through the junction but remains isolated by the barrier and is not relevant to the ego path. The overhead signal ahead is red.", "hazard_reasoning": "There is a silver truck stopped in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe distance behind the truck and comply with the red signal."}
{"id": "train_04937", "split": "train", "clip_key": "2020-0227-153144_015470_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "015470"}, "frames": ["2020-0227-153144_015470_movie_t-3.jpg", "2020-0227-153144_015470_movie_t-2.jpg", "2020-0227-153144_015470_movie_t-1.jpg", "2020-0227-153144_015470_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane arterial with smooth pavement approaches a signalized intersection, and traffic is moderate, slowing to a stop. A black sedan taxi directly ahead in the ego lane is stopped for the red light and blocks the ego car's path. In the adjacent right lane, a silver car and a short queue of vehicles wait near the intersection, holding position parallel to the ego vehicle. Two pedestrians on the left sidewalk walk along the storefronts away from the curb and pose no immediate interaction with traffic. The overhead traffic signal ahead displays red for the through movement at the intersection.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane, because of the red traffic light. The driver should stop to avoid colliding with the stopped sedan at the red light."}
{"id": "train_04938", "split": "train", "clip_key": "2020-0228-150133_061623_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "061623"}, "frames": ["2020-0228-150133_061623_movie_t-3.jpg", "2020-0228-150133_061623_movie_t-2.jpg", "2020-0228-150133_061623_movie_t-1.jpg", "2020-0228-150133_061623_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs straight with smooth pavement and no median visible; traffic is heavy and largely stationary as vehicles queue beneath a pedestrian overpass toward a signalized intersection ahead. Directly in front, a gray sedan in the ego lane is stopped because of congestion and constrains the ego vehicle. To the left, a white van in the adjacent lane waits beside us in the same queue. In the right lane ahead, a small box truck creeps forward with the slow flow while staying in its lane. A pedestrian footbridge spans the road, and no unusual obstacles or oncoming traffic are visible.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The driver must stop to maintain a safe distance and avoid collision with the stopped vehicle ahead."}
{"id": "train_04939", "split": "train", "clip_key": "2020-0131-103016_028999_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "028999"}, "frames": ["2020-0131-103016_028999_movie_t-3.jpg", "2020-0131-103016_028999_movie_t-2.jpg", "2020-0131-103016_028999_movie_t-1.jpg", "2020-0131-103016_028999_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision with minivan", "environment_perception": "An urban, signalized intersection with smooth pavement sits ahead, the ego car waiting on a two-lane approach without a median as light cross traffic flows across. A dark minivan ahead in the center of the junction turns right across the ego vehicle's path, occupying the middle of the intersection and constraining any departure. A white minivan to the right on the cross street travels leftward through the intersection in front of the ego car, continuing the cross flow. No pedestrians or cyclists are visible, and only roadside barriers line the left edge.", "hazard_reasoning": "There is a white minivan turning right in the middle of the intersection in front of the ego car. The vehicle could cut across your path unexpectedly, requiring you to stop immediately to prevent a collision."}
{"id": "train_04940", "split": "train", "clip_key": "2020-0220-151845_046893_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "046893"}, "frames": ["2020-0220-151845_046893_movie_t-3.jpg", "2020-0220-151845_046893_movie_t-2.jpg", "2020-0220-151845_046893_movie_t-1.jpg", "2020-0220-151845_046893_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "Urban setting under an elevated expressway on a multi-lane same-direction road with a right-side guardrail and smooth pavement; traffic is moderate and slow. Directly ahead in the ego lane, a red flatbed truck covered by a yellow tarp accelerates from a stop, constraining the ego vehicle's pace. Along the narrow right shoulder, a motorcyclist rides forward past the ego vehicle and overtakes near the guardrail, potentially moving into the lane ahead. In the adjacent lane to the left, a large yellow coach and other vehicles creep forward in parallel without merging. Ahead-right in the next lane, a black minivan continues straight with the flow. Green overhead signs point to E20 toward the Chuo Expressway and Route 408 to Eifuku.", "hazard_reasoning": "There is a red truck accelerating from a stop in the ego lane. Since the truck ahead is accelerating, start moving to maintain a safe following distance."}
{"id": "train_04941", "split": "train", "clip_key": "titan_clip_498_000174_movie", "source": {"subset": "titan", "scenario": "clip_498", "frame": "000174"}, "frames": ["titan_clip_498_000174_movie_t-3.jpg", "titan_clip_498_000174_movie_t-2.jpg", "titan_clip_498_000174_movie_t-1.jpg", "titan_clip_498_000174_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van", "environment_perception": "An urban two-way street with mid-rise buildings and cobblestone-like pavement unfolds ahead; it is one lane per direction with no median, and traffic is light with no moving vehicles immediately ahead or oncoming. A gray van is parked on the left curb just ahead with its rear door open as it is being unloaded, narrowing the ego lane. A man stands and walks around the back of this van at the edge of the lane, and another person waits by the sidewalk beside it. Farther ahead on the left, a small truck is stopped at the curb with a worker nearby. A painted 30 speed marking is visible on the roadway, and a no-parking sign stands on the left. Orange cones and planters line parts of the right sidewalk.", "hazard_reasoning": "There is a gray van parked on the left side of the road because it is being unloaded. The van may encroach into the driving lane or distract pedestrians, so the driver should be aware of its presence."}
{"id": "train_04942", "split": "train", "clip_key": "2020-0225-102455_042066_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "042066"}, "frames": ["2020-0225-102455_042066_movie_t-3.jpg", "2020-0225-102455_042066_movie_t-2.jpg", "2020-0225-102455_042066_movie_t-1.jpg", "2020-0225-102455_042066_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with mid- to high-rise buildings has a single through lane in the ego direction, a blue-painted shoulder or bicycle lane along the left curb, and a guardrail with shrubs on the right; the dry pavement looks smooth and traffic is light. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace as it continues straight. A pedestrian on the left sidewalk walks along and remains clear of the roadway. The number 50 is painted on the pavement as a speed marking.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's deceleration may require you to reduce speed to maintain a safe following distance."}
{"id": "train_04943", "split": "train", "clip_key": "2020-0131-135401_068330_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "068330"}, "frames": ["2020-0131-135401_068330_movie_t-3.jpg", "2020-0131-135401_068330_movie_t-2.jpg", "2020-0131-135401_068330_movie_t-1.jpg", "2020-0131-135401_068330_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to the black van", "environment_perception": "An urban multi-lane arterial with a planted median and smooth pavement approaches a wide signalized intersection, and traffic flow is light to moderate. A black van crosses in front of the ego-car from left to right through the intersection, occupying the path ahead. Farther ahead in the center same-direction lanes, a utility truck proceeds straight through the junction and would constrain the ego's pace when moving off. On the opposite carriageway, a few oncoming cars pass through their lanes without interacting. The signal facing the ego shows red.", "hazard_reasoning": "There is a black van crossing the intersection from left to right, in front of the ego-car. Yielding prevents a collision as the van enters your path."}
{"id": "train_04944", "split": "train", "clip_key": "2020-0220-102630_029917_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "029917"}, "frames": ["2020-0220-102630_029917_movie_t-3.jpg", "2020-0220-102630_029917_movie_t-2.jpg", "2020-0220-102630_029917_movie_t-1.jpg", "2020-0220-102630_029917_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes shows smooth pavement and heavy, slow traffic as vehicles queue near a work area ahead. A black scooter is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle in place. A white hatchback in the right lane just ahead creeps forward in the queue and leaves limited space for merging. Farther ahead, a pair of trucks near orange cones reduce the available roadway and sustain the bottleneck.", "hazard_reasoning": "There is a black scooter stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted scooter and respond to the sudden traffic slowdown."}
{"id": "train_04945", "split": "train", "clip_key": "2020-0203-154554_032757_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "032757"}, "frames": ["2020-0203-154554_032757_movie_t-3.jpg", "2020-0203-154554_032757_movie_t-2.jpg", "2020-0203-154554_032757_movie_t-1.jpg", "2020-0203-154554_032757_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial runs under an elevated expressway, with three lanes in the ego direction and smooth pavement; traffic is moderate but bunches ahead. A white coach bus directly ahead in the ego lane slows because congestion forms up the road, constraining the ego car's pace. A small dark car in the adjacent right lane moves slightly ahead while continuing straight, limiting an immediate lane change. A white van in the left lane stays slightly behind and holds position without merging.", "hazard_reasoning": "There is a white bus slowing in front of the ego-car, in the ego-lane, because of traffic congestion ahead on the road. The bus's deceleration indicates upcoming slowed traffic, so the driver should slow down to maintain a safe following distance and prevent a collision."}
{"id": "train_04946", "split": "train", "clip_key": "titan_clip_747_000036_movie", "source": {"subset": "titan", "scenario": "clip_747", "frame": "000036"}, "frames": ["titan_clip_747_000036_movie_t-3.jpg", "titan_clip_747_000036_movie_t-2.jpg", "titan_clip_747_000036_movie_t-1.jpg", "titan_clip_747_000036_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way shared lane and no divider shows smooth but slightly patched pavement and very light vehicular traffic; only pedestrians are moving and conditions are steady. Ahead in the middle of the lane, a pedestrian in a white T-shirt walks away from the ego vehicle along the center of the road, occupying the intended path. On the right edge by storefronts, a woman in a white top and long red skirt walks toward the camera near the curb, close enough to encroach on the lane. On the left near two orange cones, a man steps off the sidewalk and crosses diagonally toward the center, potentially entering the ego lane. Parked bicycles and the cone barrier narrow the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt, walking in the middle of the road, away from the ego car. The pedestrian's position in the travel lane poses a collision risk, so the driver should slow down to maintain control and ensure safety."}
{"id": "train_04947", "split": "train", "clip_key": "2020-0204-103442_087730_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "087730"}, "frames": ["2020-0204-103442_087730_movie_t-3.jpg", "2020-0204-103442_087730_movie_t-2.jpg", "2020-0204-103442_087730_movie_t-1.jpg", "2020-0204-103442_087730_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban bridge approach with two same-direction lanes is shown, with flexible bollards and a concrete barrier on the right and smooth pavement; traffic flows light to moderate as vehicles head toward a truss bridge. A white van ahead in the ego lane moves away and accelerates through the green signals, opening a gap. To its left, a white car in the adjacent lane continues straight at a similar pace without merging. Farther ahead, a larger vehicle proceeds onto the bridge and modestly sets the general pace. Multiple overhead traffic lights display green, and the lanes are clearly marked with straight-ahead arrows.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_04948", "split": "train", "clip_key": "2020-0213-143552_010761_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "010761"}, "frames": ["2020-0213-143552_010761_movie_t-3.jpg", "2020-0213-143552_010761_movie_t-2.jpg", "2020-0213-143552_010761_movie_t-1.jpg", "2020-0213-143552_010761_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming vehicle from the right.", "environment_perception": "An urban two-way street with one lane each way, no median, and smooth pavement; the ego approaches an intersection with a zebra crossing as light traffic flows steadily. An oncoming white sedan on the right side of the intersection drives toward the ego vehicle in the opposing lane, continuing straight. A white box van in the oncoming lane just past the crosswalk also approaches and proceeds through the junction, remaining within its lane. Ahead in the ego lane, a dark car travels away through the intersection at a steady pace.", "hazard_reasoning": "There is a white sedan driving on the right side of the intersection, towards the ego car. The sedan is approaching from the right and could cross your path at the intersection, so you should yield to avoid a collision."}
{"id": "train_04949", "split": "train", "clip_key": "2020-0131-103016_069556_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "069556"}, "frames": ["2020-0131-103016_069556_movie_t-3.jpg", "2020-0131-103016_069556_movie_t-2.jpg", "2020-0131-103016_069556_movie_t-1.jpg", "2020-0131-103016_069556_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with at least three same-direction lanes runs between office buildings, the asphalt smooth and dry, with moderate flow. A small silver box truck directly ahead in the ego lane slows, constraining the ego car's pace. A larger trailer truck travels alongside in the lane to the right at a similar speed, limiting an immediate overtake. The corridor is lined with sidewalks and guardrails, and the space farther ahead appears open without visible oncoming traffic.", "hazard_reasoning": "There is a silver truck slowing in the ego lane, in front of the ego car. You should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_04950", "split": "train", "clip_key": "2020-0131-135401_030056_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030056"}, "frames": ["2020-0131-135401_030056_movie_t-3.jpg", "2020-0131-135401_030056_movie_t-2.jpg", "2020-0131-135401_030056_movie_t-1.jpg", "2020-0131-135401_030056_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming traffic.", "environment_perception": "An urban two-way street with one lane per direction, no median, and smooth pavement leads to a signalized intersection amid moderate traffic. The signal facing the ego vehicle shows green as it approaches the crosswalk. Ahead in the ego lane, a white box truck near the intersection proceeds slowly and sets the pace. In the oncoming lane to the right of our path, a yellow, blue, and red taxi maneuvers around a black car stopped in the intersection, edging toward the center and affecting opposing flow. From the near right curb, a bicyclist carrying bags rolls into the intersection and may enter the ego lane. Parked cars cluster along the right-side curb near the corner, tightening space.", "hazard_reasoning": "There is a yellow, blue and red taxi in the oncoming traffic lane, maneuvering around a black car that is stopped in the intersection. Because the black car is halted in the intersection and the taxi must swerve around it, you should yield to avoid a potential collision."}
{"id": "train_04951", "split": "train", "clip_key": "2020-0214-145407_014771_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0214-145407_014771_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0214-145407_014771_movie_t-3_augB1.jpg", "2020-0214-145407_014771_movie_t-2_augB1.jpg", "2020-0214-145407_014771_movie_t-1_augB1.jpg", "2020-0214-145407_014771_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with multiple same-direction lanes and no physical median runs through a commercial area, the dry pavement smooth and traffic moderate. A white box truck directly ahead in the ego lane slows because a vehicle turns left further ahead, briefly constraining the ego car's pace. In the adjacent right lane, another box truck travels slightly ahead at a steady speed, limiting immediate room to change lanes. On the far right lane, a small white car overtakes and moves past the trucks. Pedestrians walk along the left sidewalk behind a rail, remaining outside the carriageway.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of a vehicle turning left ahead. The truck's deceleration may require the driver to slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_04952", "split": "train", "clip_key": "titan_clip_19_000504_movie", "source": {"subset": "titan", "scenario": "clip_19", "frame": "000504"}, "frames": ["titan_clip_19_000504_movie_t-3.jpg", "titan_clip_19_000504_movie_t-2.jpg", "titan_clip_19_000504_movie_t-1.jpg", "titan_clip_19_000504_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial district features a multi-lane road with smooth pavement and moderate, mostly steady traffic, with no physical median visible. A black minivan directly ahead in the ego lane slows, constraining the ego car's pace. A box-style delivery truck with open side panels is alongside on the left near the curb and moves slowly, possibly merging into the ego lane. Farther ahead in the right lane, a white truck continues straight at a steady speed without affecting the ego vehicle. Orange safety cones line parts of the right sidewalk but remain off the roadway.", "hazard_reasoning": "There is a black minivan slowing in front of the ego car, in the ego lane. The driver should slow down to maintain a safe following distance and avoid collision if the minivan brakes further."}
{"id": "train_04953", "split": "train", "clip_key": "2020-0203-114632_068493_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "068493"}, "frames": ["2020-0203-114632_068493_movie_t-3.jpg", "2020-0203-114632_068493_movie_t-2.jpg", "2020-0203-114632_068493_movie_t-1.jpg", "2020-0203-114632_068493_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement passes shops and mid-rise apartments, with a painted median and moderate traffic approaching a signalized intersection. A silver van directly ahead in the ego lane is stopped because the light is red, holding the ego vehicle. In the lane to the right, two small trucks proceed slowly toward the intersection, edging past the ego car and narrowing the forward gap. Farther ahead in the right lane, a large mixer truck is also queued at the signal. The traffic signal ahead shows red for this approach.", "hazard_reasoning": "There is a silver van stopped in front of the ego car in the ego lane, because the light is red. You should stop to obey the signal and prevent a collision."}
{"id": "train_04954", "split": "train", "clip_key": "2020-0205-103411_120558_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "120558"}, "frames": ["2020-0205-103411_120558_movie_t-3.jpg", "2020-0205-103411_120558_movie_t-2.jpg", "2020-0205-103411_120558_movie_t-1.jpg", "2020-0205-103411_120558_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with smooth asphalt runs through dense mid-rise buildings, and traffic is heavy and mostly stopped. The ego vehicle proceeds on Japan's left-side roadway with queues filling the adjacent lanes. A black SUV is directly ahead in the ego lane, stopped because of congestion ahead and blocking the ego car's path. To the right, a large cement mixer truck alongside is also halted with the queue, limiting room for a right-lane change. On the left, a white box truck draws level in the adjacent lane and creeps forward, constraining any left merge. An overhead directional sign spans the road on a pedestrian footbridge.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance from the halted vehicle and avoid a collision in the congested traffic."}
{"id": "train_04955", "split": "train", "clip_key": "2020-0131-135401_014978_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "014978"}, "frames": ["2020-0131-135401_014978_movie_t-3.jpg", "2020-0131-135401_014978_movie_t-2.jpg", "2020-0131-135401_014978_movie_t-1.jpg", "2020-0131-135401_014978_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down for pedestrians", "environment_perception": "An urban two-lane road with one lane per direction and no median leads to a signalized intersection; the asphalt looks smooth and traffic is light, slowing near the crosswalk. Ahead in the ego lane, a black hatchback is stopped at the zebra crossing to yield to pedestrians, which temporarily sets the pace. Several pedestrians walk across the ego vehicle's path in the crosswalk, continuing steadily until the lane clears. Oncoming cars proceed through the junction in their right-side lane and pass without interacting with the ego lane. A small utility cart is parked on the left shoulder behind a guardrail.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, because of pedestrians walking in a crosswalk. The driver should slow down to avoid colliding with the stopped vehicle and yield to the pedestrians crossing."}
{"id": "train_04956", "split": "train", "clip_key": "titan_clip_606_000186_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_606_000186_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_606_000186_movie_t-3_augB1.jpg", "titan_clip_606_000186_movie_t-2_augB1.jpg", "titan_clip_606_000186_movie_t-1_augB1.jpg", "titan_clip_606_000186_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "In a dense urban shopping area, the ego-vehicle proceeds along a narrow two-way road without a centerline, with smooth pavement and light same-direction traffic moving slowly while the oncoming side stays mostly open. Ahead to the left, a pedestrian wearing a white shirt and carrying a handbag crosses toward the right where no marked crosswalk is present, potentially entering the ego lane. Immediately in front, a white van in the ego lane rolls slowly and then pauses near the crosser, constraining the ego vehicle's pace. Farther ahead along the left curb, additional white vans are stopped and narrow the passage. On the right, a person stands by a storefront near the curb but remains off the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and carrying a handbag, at the left side of the road, crossing the street from the left side of the road to the right side, because there is no pedestrian crosswalk. The pedestrian may enter the vehicle's path unexpectedly, so the driver should slow down to avoid collision."}
{"id": "train_04957", "split": "train", "clip_key": "titan_clip_248_000132_movie", "source": {"subset": "titan", "scenario": "clip_248", "frame": "000132"}, "frames": ["titan_clip_248_000132_movie_t-3.jpg", "titan_clip_248_000132_movie_t-2.jpg", "titan_clip_248_000132_movie_t-1.jpg", "titan_clip_248_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban backstreet with no center line stretches ahead, the asphalt is smooth and traffic appears light. A woman in a white top steps from the right foreground into the roadway and walks leftward across the ego lane, directly affecting the car's path. Ahead on the right edge, a man in dark clothing walks toward the camera near the curb, close to the ego lane. Farther along the right side, a pedestrian in black pants pushes a small cart away from the vehicle along the curb, with a chance of edging into the lane. On the left, a silver van is stationary partly inside an open garage with bicycles beside it, slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing black pant who is pushing a cart away from the ego car on the right side of the road. The pedestrian pushing a cart may unexpectedly enter the roadway, so the driver should slow down to maintain control and avoid collision."}
{"id": "train_04958", "split": "train", "clip_key": "titan_clip_104_000498_movie", "source": {"subset": "titan", "scenario": "clip_104", "frame": "000498"}, "frames": ["titan_clip_104_000498_movie_t-3.jpg", "titan_clip_104_000498_movie_t-2.jpg", "titan_clip_104_000498_movie_t-1.jpg", "titan_clip_104_000498_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cone", "environment_perception": "A narrow urban two-way street with one lane in each direction and no median is shown; the pavement is smooth and traffic is light, briefly slowed by a work zone ahead. Ahead slightly left in the ego lane, a construction flagger stands beside tape and a line of orange traffic cones on the left side of the road, directing passage and narrowing the usable lane, which constrains the ego's pace. Farther ahead on the left, a work truck is stopped within the coned zone, remaining stationary and reducing the space for the ego to pass. On the left near the cones, a pedestrian walks toward the camera along the edge of the lane and may step into the ego path.", "hazard_reasoning": "There is an orange traffic cone on the left side of the road. The driver should carefully manoeuvre around the cone to avoid a collision and maintain safe passage through the construction area."}
{"id": "train_04959", "split": "train", "clip_key": "2020-0228-102841_080448_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "080448"}, "frames": ["2020-0228-102841_080448_movie_t-3.jpg", "2020-0228-102841_080448_movie_t-2.jpg", "2020-0228-102841_080448_movie_t-1.jpg", "2020-0228-102841_080448_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes on red pavement runs between tall buildings; the surface looks smooth and traffic is heavy and slow-moving. A black motorcycle directly ahead in the ego lane slows and inches forward because congestion builds around vehicles ahead, constraining our pace. Farther ahead in the same lane, a light box truck rolls slowly with the queue, contributing to the backup. In the right lane, a white minivan alongside and then slightly ahead creeps near the painted buffer, limiting lateral space next to the ego lane. In the left lane, a larger freight truck and a line of cars remain nearly stopped, partially blocking the sight line to that side.", "hazard_reasoning": "There is a black motorcycle slowing down in front of the ego lane, because of traffic congestion ahead. The driver should slow down to match the reduced speed and prevent a collision due to the traffic buildup."}
{"id": "train_04960", "split": "train", "clip_key": "titan_clip_57_000108_movie", "source": {"subset": "titan", "scenario": "clip_57", "frame": "000108"}, "frames": ["titan_clip_57_000108_movie_t-3.jpg", "titan_clip_57_000108_movie_t-2.jpg", "titan_clip_57_000108_movie_t-1.jpg", "titan_clip_57_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian on road edge", "environment_perception": "A narrow urban two-way residential street with no centerline or divider shows smooth pavement and light, slow traffic. On the right edge close ahead, a pedestrian wearing a white T-shirt and black pants and carrying a black bag walks away from the ego vehicle along the roadway because there is no sidewalk, occupying the edge and slightly narrowing the lane. Far ahead in the same direction, a bicyclist rides away near the middle of the road and may influence the ego car's pace. No salient signals or posted speeds are visible, and small trash bags line the right curb as static obstacles.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, black pants, and carrying a black bag, walking at the right sight of the road, away from the ego car, because there is no pedestrian sidewalk. The driver should be cautious because the pedestrian on the road edge could step into the lane unexpectedly."}
{"id": "train_04961", "split": "train", "clip_key": "titan_clip_308_000606_movie", "source": {"subset": "titan", "scenario": "clip_308", "frame": "000606"}, "frames": ["titan_clip_308_000606_movie_t-3.jpg", "titan_clip_308_000606_movie_t-2.jpg", "titan_clip_308_000606_movie_t-1.jpg", "titan_clip_308_000606_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "A narrow urban one-lane side street with interlocking brick pavement runs between buildings, with no divider and light traffic as the car approaches a small junction. A triangular yield sign is visible ahead. Ahead in the middle of the road, a pedestrian in a black dress carrying an umbrella and a handbag walks away from the ego vehicle, occupying the lane and constraining pace. Slightly farther ahead on the left, a man walks away beside a parked kei truck and may enter the travel path. Near the junction, two pedestrians move across from left to right. A kei truck and scooters park along the left, and potted plants crowd the right storefront, narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a black dress, carrying an umbrella and a handbag, and walking away from the ego car, in the middle of the road. This pedestrian in the middle of the lane may step into the path of the vehicle, so the driver should yield to avoid collision."}
{"id": "train_04962", "split": "train", "clip_key": "2020-0228-102841_007312_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "007312"}, "frames": ["2020-0228-102841_007312_movie_t-3.jpg", "2020-0228-102841_007312_movie_t-2.jpg", "2020-0228-102841_007312_movie_t-1.jpg", "2020-0228-102841_007312_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way arterial with a fenced sidewalk on the near side appears dry and in good condition, and traffic is moderate as vehicles queue at a signalized intersection. A white van directly ahead in the ego lane is stopped for the red light, holding the ego vehicle at the stop line. In the adjacent same-direction lane to the left, a small white hatchback waits slightly ahead, remaining stationary and preventing any easy merge around the van. In the lanes to the right, oncoming cars are present near the intersection and move slowly through or toward it without entering the ego path. The overhead traffic signal facing the ego direction shows red.", "hazard_reasoning": "There is a white van in the ego lane stopped in front of the ego car, because of the red traffic light. The driver must stop to avoid colliding with the stationary van at the red light."}
{"id": "train_04963", "split": "train", "clip_key": "2020-0228-102841_039475_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "039475"}, "frames": ["2020-0228-102841_039475_movie_t-3.jpg", "2020-0228-102841_039475_movie_t-2.jpg", "2020-0228-102841_039475_movie_t-1.jpg", "2020-0228-102841_039475_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban arterial lined with tall buildings carries multiple same-direction lanes on smooth pavement, and traffic is heavy and currently stopped at a signal. Directly ahead in the ego lane, a white hatchback is stopped because the traffic light is red, holding the ego vehicle. On the left edge, a motor scooter filters forward along the queue and slows near the front, potentially merging into the ego lane when movement resumes. In the adjacent right lane, a white van ahead waits at the same red and matches the standstill. Overhead traffic lights show red for the ego direction.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The red signal has forced the hatchback to halt, so you must stop to prevent a rear-end collision."}
{"id": "train_04964", "split": "train", "clip_key": "titan_clip_1257_000024_movie", "source": {"subset": "titan", "scenario": "clip_1257", "frame": "000024"}, "frames": ["titan_clip_1257_000024_movie_t-3.jpg", "titan_clip_1257_000024_movie_t-2.jpg", "titan_clip_1257_000024_movie_t-1.jpg", "titan_clip_1257_000024_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "A quiet urban residential street with a single narrow carriageway and no divider runs straight; the ego car travels along the left side on smooth pavement with very light traffic. Ahead on the right edge, two pedestrians wearing white shirts walk toward the ego car, keeping to the roadside and leaving a narrow gap. Nearer on the right, another man in a white shirt stands by a vending machine at the curb as the car approaches. A yellow hatchback is parked partly out of a driveway on the left, reducing the available width, and several bicycles are parked along the right wall. A convex safety mirror is mounted on the right corner.", "hazard_reasoning": "There are two pedestrians wearing white shirts and walking on the right side of the road towards the ego car. They could step into the vehicle's path around the curve, so the driver should be aware to avoid collision."}
{"id": "train_04965", "split": "train", "clip_key": "2020-0207-151349_014918_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "014918"}, "frames": ["2020-0207-151349_014918_movie_t-3.jpg", "2020-0207-151349_014918_movie_t-2.jpg", "2020-0207-151349_014918_movie_t-1.jpg", "2020-0207-151349_014918_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane road with smooth pavement and no visible median is seen as traffic is heavy and stopped in a queue. A white van directly ahead in the ego lane is stationary because of congestion ahead, so the ego car remains halted. A tall box truck ahead to the right is stopped and sits close to the lane line, narrowing the gap and blocking the view forward. Another cargo truck alongside on the left is also stopped beside the ego vehicle, limiting room to maneuver. Strong sun glare ahead around roadside structures further reduces forward visibility.", "hazard_reasoning": "There is a white van stopped in the ego lane in front of the ego car, because of traffic congestion ahead. The driver should stop now to avoid a rear-end collision and respond to the congestion ahead."}
{"id": "train_04966", "split": "train", "clip_key": "2020-0129-105040_043110_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "043110"}, "frames": ["2020-0129-105040_043110_movie_t-3.jpg", "2020-0129-105040_043110_movie_t-2.jpg", "2020-0129-105040_043110_movie_t-1.jpg", "2020-0129-105040_043110_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with smooth dark asphalt and a guardrail median on the right separating oncoming lanes; traffic is heavy and queueing at a signal. A gray hatchback directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. To the left, a large truck in the adjacent same-direction lane is also stopped beside the ego vehicle, limiting lateral room. Slightly ahead in the middle lane, a white van slows to a halt in the queue, affecting merge gaps. The traffic signal ahead shows red, and the overhead columns and guardrail narrow the scene but do not obstruct the roadway.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car, because of a red traffic light. The driver must stop to avoid colliding with the stationary vehicle at the red light and maintain a safe following distance."}
{"id": "train_04967", "split": "train", "clip_key": "2020-0221-115122_005402_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "005402"}, "frames": ["2020-0221-115122_005402_movie_t-3.jpg", "2020-0221-115122_005402_movie_t-2.jpg", "2020-0221-115122_005402_movie_t-1.jpg", "2020-0221-115122_005402_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with three lanes in the ego direction and no physical median; the pavement is smooth and traffic is heavy and mostly stopped. A silver sedan directly ahead in the ego lane stands still because of congestion and blocks the ego vehicle's path. To the right, a white hatchback in the adjacent lane inches forward alongside, limiting opportunities to change lanes. Farther ahead, a queue of vans and cars in the center and right lanes crawls forward, setting the overall pace. Parked or standing vehicles line the left curb, narrowing the margin but not encroaching into the lane.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision with the stationary vehicle."}
{"id": "train_04968", "split": "train", "clip_key": "titan_clip_958_000432_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_958_000432_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_958_000432_movie_t-3_augB1.jpg", "titan_clip_958_000432_movie_t-2_augB1.jpg", "titan_clip_958_000432_movie_t-1_augB1.jpg", "titan_clip_958_000432_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban side street without a centerline runs between tall buildings, with smooth pavement and light traffic as the ego vehicle proceeds forward. Ahead on the right, a female pedestrian with brown hair wearing black pants and carrying a handbag walks away in the ego lane as she moves around other pedestrians in the pedestrian lane, occupying part of the vehicle's path. Farther ahead to the right, a small group of pedestrians also walks away in the roadway near the curb, limiting available space in the lane. Near left, a black sedan is parked along the curb, slightly narrowing the street.", "hazard_reasoning": "There is a female pedestrian with brown hair, wearing black pants and carrying a handbag, walking on the right hand side of the road, away from the ego-car, in the ego lane, because she is moving around other pedestrians in the pedestrian lane. The driver should manoeuvre carefully around this pedestrian to avoid a potential collision."}
{"id": "train_04969", "split": "train", "clip_key": "2020-0228-102841_026127_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "026127"}, "frames": ["2020-0228-102841_026127_movie_t-3.jpg", "2020-0228-102841_026127_movie_t-2.jpg", "2020-0228-102841_026127_movie_t-1.jpg", "2020-0228-102841_026127_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction and a painted central divider runs straight ahead; the pavement is dry and smooth and traffic is light to moderate. Ahead in the ego lane a gray hatchback slows, so the ego car follows its pace. Slightly ahead to the left near the curb, a bicyclist rides in the same direction close to parked vehicles and may edge into the ego lane. To the right in the opposing lanes, a white sedan approaches steadily, separated by the center markings and not interacting. A small work truck is stopped at the left curb and other parked cars line both sides.", "hazard_reasoning": "There is a gray hatchback slowing in front of the ego car, in the ego lane. The driver should slow down to maintain a safe following distance and avoid a collision due to the decelerating vehicle."}
{"id": "train_04970", "split": "train", "clip_key": "titan_clip_1004_000246_movie", "source": {"subset": "titan", "scenario": "clip_1004", "frame": "000246"}, "frames": ["titan_clip_1004_000246_movie_t-3.jpg", "titan_clip_1004_000246_movie_t-2.jpg", "titan_clip_1004_000246_movie_t-1.jpg", "titan_clip_1004_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "A dense urban shopping street has a narrow undivided single lane on brick paving, bordered by storefronts; vehicle traffic is light and speeds are slow. Ahead on the right, a woman in a black dress, talking on a phone, walks toward the vehicle in the ego lane as she maneuvers around a white van parked at the right curb, briefly occupying the path. The white van remains stopped by the storefront and slightly protrudes into the lane, constricting clearance. Another pedestrian further ahead near the lane center walks toward the ego car and influences its pace. Other pedestrians keep to the sidewalks.", "hazard_reasoning": "There is a female pedestrian in a black dress, talking on a cell phone, who is walking on the right side of the road, towards the ego-car, in the ego lane, because she is maneuvering around a parked van. The driver should carefully manoeuvre around the pedestrian to avoid a collision as she may step further into the lane while bypassing the parked van."}
{"id": "train_04971", "split": "train", "clip_key": "titan_clip_413_000354_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_413_000354_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_413_000354_movie_t-3_augB1.jpg", "titan_clip_413_000354_movie_t-2_augB1.jpg", "titan_clip_413_000354_movie_t-1_augB1.jpg", "titan_clip_413_000354_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction, no median, and smooth pavement curves gently right with light traffic. Ahead of the ego vehicle, a pedestrian holding an umbrella steps from the right sidewalk and crosses midblock toward the left, moving toward the ego lane and potentially constraining speed. Farther ahead along the oncoming-side curb, several motorcycles are stopped and riders cluster near them, narrowing that edge but remaining outside the ego lane. Additional pedestrians walk along the right sidewalk near storefronts and pause at the curb without entering the roadway.", "hazard_reasoning": "A pedestrian carrying an umbrella is crossing in the middle to the road to the left side. The driver should slow down to avoid hitting the pedestrian and allow safe passage."}
{"id": "train_04972", "split": "train", "clip_key": "2020-0218-103119_022941_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "022941"}, "frames": ["2020-0218-103119_022941_movie_t-3.jpg", "2020-0218-103119_022941_movie_t-2.jpg", "2020-0218-103119_022941_movie_t-1.jpg", "2020-0218-103119_022941_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane street with no physical median and smooth pavement comes into view, and traffic is light as the ego car approaches a signalized intersection. The signals ahead show green and vehicles proceed steadily. A white truck ahead in the ego lane moves away through the junction under the green light, increasing its gap from the ego vehicle. A large box truck is alongside on the right, slightly ahead in an adjacent same-direction lane, continuing straight without merging into the ego lane. An oncoming silver sedan to the right side of the roadway travels toward the camera through its lane, remaining separated from the ego path.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because of green traffic lights. You should follow the vehicle ahead to maintain safe distance and pass the intersection smoothly."}
{"id": "train_04973", "split": "train", "clip_key": "titan_clip_85_000396_movie", "source": {"subset": "titan", "scenario": "clip_85", "frame": "000396"}, "frames": ["titan_clip_85_000396_movie_t-3.jpg", "titan_clip_85_000396_movie_t-2.jpg", "titan_clip_85_000396_movie_t-1.jpg", "titan_clip_85_000396_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with a single lane each way and no median comes to a crosswalk at an unsignalized intersection; the pavement is smooth and traffic is light. A pedestrian in a black T-shirt and black pants crosses the near crosswalk from the right toward the left ahead, moving through the ego lane. Another pedestrian in light clothing steps off the left curb and walks rightward across the same crosswalk, potentially entering the path. A white car farther ahead in the same direction slows near the crosswalk to yield, constraining the pace. Several other people stand on the sidewalks and cars are parked along the curbs.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and black pants, and crossing the street, at the crosswalk, to the left side. The driver should stop to yield to the pedestrian in the crosswalk to ensure their safety."}
{"id": "train_04974", "split": "train", "clip_key": "2020-0226-140503_059748_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "059748"}, "frames": ["2020-0226-140503_059748_movie_t-3.jpg", "2020-0226-140503_059748_movie_t-2.jpg", "2020-0226-140503_059748_movie_t-1.jpg", "2020-0226-140503_059748_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban commercial street with a single narrow lane each way and no median runs straight ahead; the paver-style surface is intact and traffic is light. Directly ahead at the marked crosswalk, two pedestrians cross left to right in front of the ego-car, a woman carrying a handbag and a man wearing a backpack and holding an umbrella, both in gray coats, and they control the car's pace. Another pedestrian in a maroon coat steps from the left curb at the crosswalk and pauses, about to follow after them. A white oncoming car approaches slowly beyond the crosswalk, remaining clear while the crossing proceeds. A do-not-enter sign stands at the right-side junction.", "hazard_reasoning": "There are two pedestrians, one female carrying a handbag, and one male wearing a backpack and carrying an umbrella, both wearing gray coats, crossing the street in marked crosswalk in front of the ego-car. The driver must stop to yield to the pedestrians in the crosswalk and prevent a collision."}
{"id": "train_04975", "split": "train", "clip_key": "titan_clip_127_000072_movie", "source": {"subset": "titan", "scenario": "clip_127", "frame": "000072"}, "frames": ["titan_clip_127_000072_movie_t-3.jpg", "titan_clip_127_000072_movie_t-2.jpg", "titan_clip_127_000072_movie_t-1.jpg", "titan_clip_127_000072_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction runs between mid-rise buildings; there is no median and the pavement is smooth, with light traffic moving steadily. A silver minivan is stopped along the left curb ahead, jutting slightly into the ego lane and narrowing the available space. A pedestrian in a white shirt carrying a handbag stands on the right sidewalk near the green railing, facing the roadway and may step out to cross to the left into the ego lane. Far ahead, a few oncoming cars travel in their lane with ample spacing.", "hazard_reasoning": "A pedestrian wearing a white shirt and a handbag is located on the left side of the road, intending to cross to the right side. The driver should slow down to give the pedestrian time to cross safely and prevent a potential collision."}
{"id": "train_04976", "split": "train", "clip_key": "2020-0207-101955_034772_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "034772"}, "frames": ["2020-0207-101955_034772_movie_t-3.jpg", "2020-0207-101955_034772_movie_t-2.jpg", "2020-0207-101955_034772_movie_t-1.jpg", "2020-0207-101955_034772_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian in crosswalk", "environment_perception": "An urban multi-lane intersection under an elevated expressway is ahead, with dry, well-marked pavement and a painted chevron island; traffic is light to moderate, and the view is from just before the near crosswalk. A white microvan ahead slightly left proceeds through the junction, veering left with the roadway and leading the same-direction flow. Farther ahead, a box truck continues under the overpass while another van to its right advances alongside, both clearing the intersection before the ego path. A pedestrian carrying a backpack and wearing a coat crosses from left to right on the near crosswalk directly across the ego lane.", "hazard_reasoning": "There is a pedestrian carrying a backpack, wearing a coat, and crossing the street, from the left side to the right side, ahead at the crosswalk. The driver should yield to the pedestrian as they cross ahead at the marked crosswalk to avoid a collision and ensure safety."}
{"id": "train_04977", "split": "train", "clip_key": "2020-0226-140503_061332_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "061332"}, "frames": ["2020-0226-140503_061332_movie_t-3.jpg", "2020-0226-140503_061332_movie_t-2.jpg", "2020-0226-140503_061332_movie_t-1.jpg", "2020-0226-140503_061332_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with a single left-side travel lane and a curbside bicycle lane, no median, and smooth pavement; traffic is light and currently halted at a signalized intersection. A white hatchback ahead in the ego lane is stopped for the red light, holding the ego vehicle. A pedestrian very close crosses from the left across the ego lane in front of the camera, passing the front of the white car and momentarily blocking the path. Several pedestrians wait on the left sidewalk near the crosswalk without entering the lane. The overhead traffic signal shows red, and a 20 km/h speed limit sign is visible on the left.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of red traffic lights. The driver should stop to maintain a safe distance and avoid colliding with the halted vehicle at the red signal."}
{"id": "train_04978", "split": "train", "clip_key": "2020-0127-132751_103455_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "103455"}, "frames": ["2020-0127-132751_103455_movie_t-3.jpg", "2020-0127-132751_103455_movie_t-2.jpg", "2020-0127-132751_103455_movie_t-1.jpg", "2020-0127-132751_103455_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single lane each way, separated by a solid yellow centerline, has dry, intact pavement and light traffic. A gray van ahead in the ego lane signals and slows because of congestion ahead, constraining the ego car's pace. A motor scooter approaches in the oncoming lane near the centerline and continues straight past without encroaching. A black sedan sits in a driveway on the right beyond a side street, remaining out of the travel lane.", "hazard_reasoning": "There is a gray van in the ego lane signaling that it is slowing down, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adapt to the reduced traffic speed ahead."}
{"id": "train_04979", "split": "train", "clip_key": "titan_clip_776_000588_movie", "source": {"subset": "titan", "scenario": "clip_776", "frame": "000588"}, "frames": ["titan_clip_776_000588_movie_t-3.jpg", "titan_clip_776_000588_movie_t-2.jpg", "titan_clip_776_000588_movie_t-1.jpg", "titan_clip_776_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban backstreet with a single narrow two-way lane and no median runs between buildings; the pavement is smooth and traffic is light, with a small work zone ahead. A pedestrian in black pants and a black jacket carrying a handbag is ahead on the left, walking away along the lane and occupying part of the path, which may constrain the vehicle's pace. Another pedestrian on the right edge walks toward the camera while holding a bag and stays near the shoulder but may step into the lane. Farther ahead in the same lane, a small truck stands by orange cones near scaffolding, narrowing the roadway. Parked bicycles line the right side and storefront displays crowd the left.", "hazard_reasoning": "There is a pedestrian wearing black pants, a black jacket, and carrying a handbag, walking on the left side of the road, away from the ego car. The pedestrian may unexpectedly step into the vehicle's path from their position on the roadway, so the driver should maneuver around them safely."}
{"id": "train_04980", "split": "train", "clip_key": "titan_clip_407_000102_movie", "source": {"subset": "titan", "scenario": "clip_407", "frame": "000102"}, "frames": ["titan_clip_407_000102_movie_t-3.jpg", "titan_clip_407_000102_movie_t-2.jpg", "titan_clip_407_000102_movie_t-1.jpg", "titan_clip_407_000102_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "An urban commercial street with a single narrow carriageway and no centerline runs between shops, paved with cobblestones and edged by bollards; traffic is light with only stationary vehicles visible. A white box truck is parked on the right side of the road just ahead, partly occupying the lane and constraining the ego vehicle's path. Farther ahead another white truck also stands on the right, further narrowing the passage. Pedestrians are present on both sidewalks, including a few close to the curb near the right-side truck and others walking by storefronts on the left, but none step into the roadway. No salient signals or posted speeds are visible, and the main feature is the reduced width caused by the parked trucks.", "hazard_reasoning": "There's a white truck parked on the right side of the road. The parked truck and nearby debris reduce visibility and encroach on the driving lane, so the driver should carefully manoeuvre around them to maintain a safe path."}
{"id": "train_04981", "split": "train", "clip_key": "2020-0217-110854_029494_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "029494"}, "frames": ["2020-0217-110854_029494_movie_t-3.jpg", "2020-0217-110854_029494_movie_t-2.jpg", "2020-0217-110854_029494_movie_t-1.jpg", "2020-0217-110854_029494_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian in crosswalk", "environment_perception": "An urban multi-lane intersection with wide zebra crosswalks comes into view; the ego vehicle is stopped before the line on dry, smooth pavement while cross traffic is heavy. A pedestrian wearing a white coat and a black backpack walks right to left across the crosswalk directly in front of the ego car, occupying its path. Far ahead, a large group of pedestrians streams laterally across the junction and continues to block the way. In the center, a small box truck moves leftward across the intersection, turning through and momentarily covering the ego lane. Vehicles queue on the far side in both directions, adding to the congestion.", "hazard_reasoning": "There is a pedestrian wearing a white coat and a black backpack, and walking across a crosswalk from right to left, in front of the ego car. The driver must yield to the crossing pedestrian to avoid a collision."}
{"id": "train_04982", "split": "train", "clip_key": "2020-0207-101955_079623_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "079623"}, "frames": ["2020-0207-101955_079623_movie_t-3.jpg", "2020-0207-101955_079623_movie_t-2.jpg", "2020-0207-101955_079623_movie_t-1.jpg", "2020-0207-101955_079623_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An elevated two-lane urban road with one lane per direction and guardrails runs straight on good pavement; traffic is light. Overhead, a blue directional sign shows Route 17 guidance in 250 m. Ahead in the ego lane, a blue truck slows because a truck in front is reducing speed, so it constrains the ego vehicle's pace. Farther ahead in the same lane, a white box truck continues slowing, leading the queue in this direction. To the right in the oncoming lane, a large blue truck approaches and passes steadily without encroaching, posing no conflict. No pedestrians or obstacles appear, and visibility is clear.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The blue truck's deceleration poses a risk of collision, so the driver should slow down to maintain a safe distance."}
{"id": "train_04983", "split": "train", "clip_key": "titan_clip_316_000570_movie", "source": {"subset": "titan", "scenario": "clip_316", "frame": "000570"}, "frames": ["titan_clip_316_000570_movie_t-3.jpg", "titan_clip_316_000570_movie_t-2.jpg", "titan_clip_316_000570_movie_t-1.jpg", "titan_clip_316_000570_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban back street with a narrow, block-paved lane runs between tall buildings, with no centerline or median and very light vehicular flow. Ahead in the middle of the lane, a man wearing a blue shirt and gray pants carries a handbag and walks away from the ego vehicle, occupying the path and constraining progress. Slightly farther ahead left, another pedestrian walks in the same direction within the lane and may remain in the vehicle's trajectory. On the left edge, a silver car is parked nose-out into the roadway, narrowing the usable space near the ego vehicle. No oncoming vehicles or traffic signals are visible.", "hazard_reasoning": "There is a man wearing a blue shirt and gray pants, carrying a handbag, and walking away from the ego car, in the middle of the road. The driver should manoeuvre carefully since the pedestrian is walking in the middle of the lane, risking a sudden obstruction of the vehicle's path."}
{"id": "train_04984", "split": "train", "clip_key": "2020-0213-143552_065852_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "065852"}, "frames": ["2020-0213-143552_065852_movie_t-3.jpg", "2020-0213-143552_065852_movie_t-2.jpg", "2020-0213-143552_065852_movie_t-1.jpg", "2020-0213-143552_065852_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes runs beside a hedge median divider; the pavement is dry and smooth, and traffic is moderate and compressing ahead. A white box truck directly ahead in the ego lane slows because traffic is congested in front, constraining the ego vehicle's pace. A dark car in the adjacent left lane travels slightly ahead at a steady speed, occupying the space that would allow a lane change. A blue hatchback is stopped at the near left curb, outside the main traffic flow.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down because the truck ahead is reducing speed due to congestion, increasing the risk of collision if not adjusting speed."}
{"id": "train_04985", "split": "train", "clip_key": "titan_clip_683_000546_movie", "source": {"subset": "titan", "scenario": "clip_683", "frame": "000546"}, "frames": ["titan_clip_683_000546_movie_t-3.jpg", "titan_clip_683_000546_movie_t-2.jpg", "titan_clip_683_000546_movie_t-1.jpg", "titan_clip_683_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow two-way lane and smooth pavement shows light vehicle traffic but many pedestrians; there is no divider and the lane is constricted by roadside shops. A man wearing a blue T-shirt and blue pants with a backpack walks toward the ego along the left side ahead because a white van is parked there, briefly occupying the roadway. On the right, another pedestrian stays on the sidewalk by the storefront and continues walking parallel to the road without entering the lane. Farther ahead, a pedestrian moves away near the middle of the road, occupying part of the path. A white van is parked along the left curb protruding into the lane, narrowing the passage.", "hazard_reasoning": "There is a man wearing a blue T-shirt and blue pants, carrying a backpack, and walking on the left side of the street, toward the ego car, because of a parked vehicle. The driver should slow down because the pedestrian may unexpectedly step into the lane to avoid the parked vehicle."}
{"id": "train_04986", "split": "train", "clip_key": "2020-0204-150838_061738_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "061738"}, "frames": ["2020-0204-150838_061738_movie_t-3.jpg", "2020-0204-150838_061738_movie_t-2.jpg", "2020-0204-150838_061738_movie_t-1.jpg", "2020-0204-150838_061738_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "An urban two-lane same-direction road runs under an elevated expressway, the pavement dry and smooth, with heavy, slow traffic. A large white box truck is directly ahead in the ego lane and nearly stopped, constraining the ego vehicle's pace. A gray van at the left curb edges into the ego lane from the left side, cutting in from the roadside. In the adjacent right lane, a silver hatchback draws alongside and then moves ahead, overtaking the slower queue. Farther ahead in the right lane, a white minivan continues slowly with the flow.", "hazard_reasoning": "There is a gray van cutting in from the left side of the road to the ego lane. The van's merge reduces available space and could cause a collision if you do not yield in time."}
{"id": "train_04987", "split": "train", "clip_key": "2020-0205-103411_114675_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "114675"}, "frames": ["2020-0205-103411_114675_movie_t-3.jpg", "2020-0205-103411_114675_movie_t-2.jpg", "2020-0205-103411_114675_movie_t-1.jpg", "2020-0205-103411_114675_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban divided arterial with three lanes in the ego direction runs straight on dry pavement, with light, steady traffic; a guardrail lines the left and mid-rise buildings stand on the right. A black compact hatchback ahead cuts in from the left lane into the ego lane and settles directly in front, briefly closing the gap and setting the pace. A small white van farther ahead in the adjacent right lane continues straight at a slightly higher speed and pulls away without affecting the ego vehicle. An overhead blue direction sign is visible above the roadway.", "hazard_reasoning": "There is a black compact hatchback cutting-in from the left lane, in front of the ego car. The hatchback's sudden lane change may reduce the following distance, so the driver should follow the vehicle ahead to maintain a safe gap."}
{"id": "train_04988", "split": "train", "clip_key": "titan_clip_256_000462_movie", "source": {"subset": "titan", "scenario": "clip_256", "frame": "000462"}, "frames": ["titan_clip_256_000462_movie_t-3.jpg", "titan_clip_256_000462_movie_t-2.jpg", "titan_clip_256_000462_movie_t-1.jpg", "titan_clip_256_000462_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian.", "environment_perception": "An urban commercial side street with no centerline and smooth pavement is seen in bright daylight; the narrow roadway offers limited sidewalk space, and traffic is light. Ahead in the middle of the road, a pedestrian in a white shirt and black pants walks away from the ego car, using the carriageway because there is no sidewalk and occupying the ego path. A dark van is parked along the right edge close to the ego vehicle, reducing the available width. Farther ahead, a small delivery truck stops in the lane with a worker nearby and a cone at its rear, further constricting the passage while same-direction traffic remains minimal.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants and walking in the middle of the road away from the ego car, because there is no sidewalk. The driver should yield because the pedestrian is walking on the road and may cross into the vehicle's path."}
{"id": "train_04989", "split": "train", "clip_key": "titan_clip_925_000522_movie", "source": {"subset": "titan", "scenario": "clip_925", "frame": "000522"}, "frames": ["titan_clip_925_000522_movie_t-3.jpg", "titan_clip_925_000522_movie_t-2.jpg", "titan_clip_925_000522_movie_t-1.jpg", "titan_clip_925_000522_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban commercial street with a single narrow through lane and smooth pavement shows light traffic, with curbside parking on both sides. A small car far ahead in the same direction proceeds steadily up the lane without affecting the ego vehicle. On the right near the curb, a white van is parked with its rear open as a worker unloads, narrowing the lane and possibly edging into the path. On the left, a green truck and a silver minivan are stopped at the curb, further tightening clearance.", "hazard_reasoning": "There is a white van parked on the right side of the road, because it is being unloaded. The open doors and unloading activity create a partial obstruction, requiring careful manoeuvring to avoid collision or sudden braking."}
{"id": "train_04990", "split": "train", "clip_key": "titan_clip_1002_000588_movie", "source": {"subset": "titan", "scenario": "clip_1002", "frame": "000588"}, "frames": ["titan_clip_1002_000588_movie_t-3.jpg", "titan_clip_1002_000588_movie_t-2.jpg", "titan_clip_1002_000588_movie_t-1.jpg", "titan_clip_1002_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian near divider", "environment_perception": "An urban street with a single lane in the ego direction, no median, and smooth pavement runs between tall buildings; traffic is light and slows toward an intersection. On the left curb just ahead, a parked flatbed truck narrows the lane as a pedestrian wearing a light-blue shirt and light-blue pants gets into the vehicle close to the travel path. Far ahead in the same lane, a red car waits at a red signal, constraining the pace. At the right edge by a parking-garage entrance lined with orange cones, an attendant stands at the curb. A red traffic light and overhead parking guidance signs are clearly visible.", "hazard_reasoning": "There is a pedestrian wearing a light-blue shirt and light-blue pants, and getting into a parked vehicle, on the left side of the road. The pedestrian's movement near the divider may result in sudden crossing, so the driver should be aware to anticipate any unexpected pedestrian activity and avoid collision."}
{"id": "train_04991", "split": "train", "clip_key": "2020-0220-151845_013450_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "013450"}, "frames": ["2020-0220-151845_013450_movie_t-3.jpg", "2020-0220-151845_013450_movie_t-2.jpg", "2020-0220-151845_013450_movie_t-1.jpg", "2020-0220-151845_013450_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A busy urban multi-lane road passes a large station, with a red left bus lane, no physical median, and dry pavement; traffic is heavy and slow. Ahead in the ego lane a black van is stopped with brake lights on due to congestion, holding the ego vehicle. To the right, a gray box truck in the adjacent lane inches forward alongside, limiting a right-lane change. Farther ahead in the red lane on the left, a small silver minivan creeps forward in the same direction within the queue. Pedestrians walk along the left sidewalk behind a guardrail.", "hazard_reasoning": "There is a black van stopped in front of the ego car in the ego lane, due to traffic congestion. The driver should stop to maintain a safe distance and prevent a collision with the halted van."}
{"id": "train_04992", "split": "train", "clip_key": "2020-0204-103442_028927_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "028927"}, "frames": ["2020-0204-103442_028927_movie_t-3.jpg", "2020-0204-103442_028927_movie_t-2.jpg", "2020-0204-103442_028927_movie_t-1.jpg", "2020-0204-103442_028927_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of merging sedan.", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, with guardrails in the median and along the curb; the asphalt looks smooth and dry, and traffic flows at a light to moderate pace. A silver hatchback directly ahead in the ego lane maintains a steady speed and keeps our path occupied. To the right, a white SUV runs alongside and then edges ahead in the adjacent lane, passing without entering our lane. Far ahead under the viaduct, a box truck proceeds in the middle lanes, influencing the pace of vehicles ahead. Overhead blue direction boards with arrows are visible above the roadway, while no traffic signals or unusual hazards appear in view.", "hazard_reasoning": "There is a white sedan changing from the ego lane to the left lane. It is merging into your lane, so you should be cautious to avoid a potential collision."}
{"id": "train_04993", "split": "train", "clip_key": "2020-0220-151845_032509_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "032509"}, "frames": ["2020-0220-151845_032509_movie_t-3.jpg", "2020-0220-151845_032509_movie_t-2.jpg", "2020-0220-151845_032509_movie_t-1.jpg", "2020-0220-151845_032509_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban road runs under an elevated structure, with the ego vehicle in the left of two same-direction lanes and no median visible; the pavement is dry and traffic is heavy with stop-and-go queues. Ahead in the ego lane, a red flatbed truck carrying a yellow-tarped load is stopped because of congestion and holds the ego vehicle's pace. In the adjacent right lane, a small flatbed truck is also stopped slightly ahead in the queue, restricting any lane change. To the immediate right of the ego car, a white van stands beside the lane line, further narrowing lateral space. A side street and crosswalk appear on the left, and no pedestrians are visible.", "hazard_reasoning": "There is a red truck stopped in front of the ego car in the ego lane because of the traffic congestion ahead. The driver should stop to avoid a rear-end collision with the halted vehicle due to the congestion."}
{"id": "train_04994", "split": "train", "clip_key": "2020-0213-143552_085624_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "085624"}, "frames": ["2020-0213-143552_085624_movie_t-3.jpg", "2020-0213-143552_085624_movie_t-2.jpg", "2020-0213-143552_085624_movie_t-1.jpg", "2020-0213-143552_085624_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated roadway with three same-direction lanes curves gently right beside a tall sound barrier, and the asphalt appears smooth; traffic is light and flows steadily. Far ahead in the center lane, a white truck travels at a constant speed and is the next vehicle in the ego lane. In the right lane farther ahead, several trucks move slowly toward a diverging ramp, remaining in their lane and not impeding the center lane. A right-exit lane arrow is painted on the pavement, and an overhead gantry approaches near the interchange. No oncoming traffic, pedestrians, or cyclists are visible.", "hazard_reasoning": "No caption. No hazards detected, so maintain current speed and lane under this clear, unobstructed condition."}
{"id": "train_04995", "split": "train", "clip_key": "titan_clip_906_000360_movie", "source": {"subset": "titan", "scenario": "clip_906", "frame": "000360"}, "frames": ["titan_clip_906_000360_movie_t-3.jpg", "titan_clip_906_000360_movie_t-2.jpg", "titan_clip_906_000360_movie_t-1.jpg", "titan_clip_906_000360_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A narrow urban residential two-way road with no centerline curves gently left; the pavement is slightly worn and traffic is light. On the right side ahead, a cyclist wearing a hat rides toward the camera along the oncoming edge, steadily approaching and taking some of the available width as he passes the bend. Farther ahead in the same direction, a small white van proceeds slowly through the curve, setting the pace for the ego vehicle. A white car is parked at a driveway on the left, and high walls along the right create limited sightlines through the bend.", "hazard_reasoning": "There is a cyclist wearing a hat cycling towards the ego car on the right side of the road. You should carefully manoeuvre around the cyclist to avoid a collision on the narrow street."}
{"id": "train_04996", "split": "train", "clip_key": "titan_clip_1111_000528_movie", "source": {"subset": "titan", "scenario": "clip_1111", "frame": "000528"}, "frames": ["titan_clip_1111_000528_movie_t-3.jpg", "titan_clip_1111_000528_movie_t-2.jpg", "titan_clip_1111_000528_movie_t-1.jpg", "titan_clip_1111_000528_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with brick paving runs straight ahead as a single narrow lane with no center line or median; the surface looks good and traffic is very light with no moving vehicles ahead. A white car is stopped along the left curb ahead, jutting slightly into the lane and narrowing the passage. A pedestrian in dark clothing crosses midblock from the left near that car, moving to the right and briefly entering the ego path. Another pedestrian on the left sidewalk near the camera walks along the curb, staying on the sidewalk.", "hazard_reasoning": "No caption available. There are no visible hazards in this scene, so the driver can maintain normal driving behavior without additional warnings."}
{"id": "train_04997", "split": "train", "clip_key": "2020-0228-150133_045129_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "045129"}, "frames": ["2020-0228-150133_045129_movie_t-3.jpg", "2020-0228-150133_045129_movie_t-2.jpg", "2020-0228-150133_045129_movie_t-1.jpg", "2020-0228-150133_045129_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with two same-direction lanes runs alongside a narrow post-and-rail median, the pavement is smooth, and traffic is heavy and slow near an intersection. A dark-gray coupe directly ahead in the ego lane slows because of congestion ahead, constraining the ego car's pace. In the adjacent left lane, a queue of white cars creeps forward toward the junction, keeping gaps tight and limiting an easy lane change. On the left sidewalk by the crosswalk, a couple of pedestrians wait at the curb without stepping into the road.", "hazard_reasoning": "There is a dark-gray coupe slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid potential collisions in congested traffic."}
{"id": "train_04998", "split": "train", "clip_key": "2020-0227-104226_093004_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "093004"}, "frames": ["2020-0227-104226_093004_movie_t-3.jpg", "2020-0227-104226_093004_movie_t-2.jpg", "2020-0227-104226_093004_movie_t-1.jpg", "2020-0227-104226_093004_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of red SUV cutting in", "environment_perception": "An urban two-way road with a single left-hand lane for the ego is divided from oncoming traffic by a low fenced median; the dry pavement looks slightly worn and traffic is moderate with steady flow. Ahead, a red SUV cuts in from the left into the ego lane to avoid a vehicle stopped in the left lane, taking position directly in front of the ego car. Farther ahead, a small white box truck in the ego lane proceeds at a steady speed and effectively sets the pace. To the right beyond the median, several trucks and cars travel toward the camera in the opposite direction without interacting with the ego vehicle. No salient traffic signals are visible.", "hazard_reasoning": "There is a red SUV cutting in front of the ego car, from the left lane to the ego lane, because of a vehicle stopped in the left lane. Since the SUV is merging directly into your path, you should anticipate this maneuver to maintain a safe following distance and avoid sudden braking."}
{"id": "train_04999", "split": "train", "clip_key": "titan_clip_735_000192_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_735_000192_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_735_000192_movie_t-3_augB1.jpg", "titan_clip_735_000192_movie_t-2_augB1.jpg", "titan_clip_735_000192_movie_t-1_augB1.jpg", "titan_clip_735_000192_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban residential two-way street is narrow with smooth asphalt and no median, and traffic is light with no moving vehicles ahead or oncoming. A cyclist emerges from a hidden side intersection on the right and rides toward the ego lane to merge, potentially entering the path. A blue hatchback sits in a right-side driveway with its nose close to the roadway, and other parked vehicles along the left verge further narrow the corridor. No signals or posted speed signs are clearly visible.", "hazard_reasoning": "There's a cyclist cycling from a hidden intersection on the right side of the road towards the ego lane because they are trying to merge. The driver should slow down to allow safe merging and avoid collision with the bicyclist."}
{"id": "train_05000", "split": "train", "clip_key": "2020-0213-143552_004804_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "004804"}, "frames": ["2020-0213-143552_004804_movie_t-3.jpg", "2020-0213-143552_004804_movie_t-2.jpg", "2020-0213-143552_004804_movie_t-1.jpg", "2020-0213-143552_004804_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban two-way arterial with two lanes per direction and no physical median unfolds in clear daylight; the pavement is smooth and traffic is light to moderate. A green curbside bicycle lane runs along the left edge. Ahead in the ego lane, a brown box truck is parked with its rear door open as it is being unloaded, blocking the lane and constraining the ego path. In the adjacent right same-direction lane, a few cars proceed steadily past the stoppage. On the far right, oncoming vehicles flow continuously in their lanes. A pedestrian stands on the left sidewalk near a storefront by the loading area, close to the curb but staying off the road.", "hazard_reasoning": "There is a brown truck parked in the ego lane, because it is being unloaded. The parked truck partially blocks the lane, so you should adjust your path to avoid a collision."}
{"id": "train_05001", "split": "train", "clip_key": "titan_clip_287_000048_movie", "source": {"subset": "titan", "scenario": "clip_287", "frame": "000048"}, "frames": ["titan_clip_287_000048_movie_t-3.jpg", "titan_clip_287_000048_movie_t-2.jpg", "titan_clip_287_000048_movie_t-1.jpg", "titan_clip_287_000048_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian pushing the cart", "environment_perception": "An urban two-way street with a small intersection and no median lies ahead, the pavement is smooth, and traffic is light and slow. At the crosswalk ahead, two pedestrians move right to left; one wearing brown pushes a blue cart toward the ego car and occupies the ego lane, so the ego must wait. Another pedestrian walks just ahead in the lane center, continuing away from the camera and keeping the pace slow. From the left corner, a blue truck protrudes into the intersection and pauses at the curb. On the right edge, a small white car stands still at the crosswalk line beside the pedestrians. A pedestrian-crossing sign is visible.", "hazard_reasoning": "There is a pedestrian wearing brown clothing, pushing a cart towards the ego car. Yield to allow the pedestrian to cross safely and avoid collision."}
{"id": "train_05002", "split": "train", "clip_key": "2020-0203-154554_044917_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "044917"}, "frames": ["2020-0203-154554_044917_movie_t-3.jpg", "2020-0203-154554_044917_movie_t-2.jpg", "2020-0203-154554_044917_movie_t-1.jpg", "2020-0203-154554_044917_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided expressway runs through a covered tunnel section with two same-direction lanes and smooth pavement, and traffic remains heavy and slow. A gray sedan directly ahead in the ego lane slows in stop-and-go congestion, constraining our pace. A white SUV slightly ahead to the right creeps along in the adjacent lane, staying parallel and limiting space on that side. Farther ahead, several cars and a box truck queue across both lanes with brake lights illuminated, sustaining the jam.", "hazard_reasoning": "There is a gray Sedan slowing in the ego lane, because of traffic congestion, in front of the ego car. The slowing vehicle indicates potential congestion ahead, so the driver should reduce speed to maintain a safe distance and avoid collision."}
{"id": "train_05003", "split": "train", "clip_key": "2020-0131-103016_032222_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "032222"}, "frames": ["2020-0131-103016_032222_movie_t-3.jpg", "2020-0131-103016_032222_movie_t-2.jpg", "2020-0131-103016_032222_movie_t-1.jpg", "2020-0131-103016_032222_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with good pavement runs through a tree-lined area, with at least two lanes in the ego direction and a left shoulder with a guardrail; traffic is moderate and bunching ahead. A white taxi directly ahead in the ego lane is stopped because of congestion in front, constraining the ego?ehicle. In the adjacent right lane, a silver box truck slightly ahead continues forward at a steady pace and passes the stopped car. Farther ahead in the same right lane, a small white van slows behind traffic but stays in lane. No salient signals are visible, and no pedestrians or obstacles encroach on the roadway.", "hazard_reasoning": "There is a white taxi stopped in front of the ego-car because of the traffic congestion ahead. Therefore, the driver should stop to prevent a rear-end collision."}
{"id": "train_05004", "split": "train", "clip_key": "titan_clip_215_000474_movie", "source": {"subset": "titan", "scenario": "clip_215", "frame": "000474"}, "frames": ["titan_clip_215_000474_movie_t-3.jpg", "titan_clip_215_000474_movie_t-2.jpg", "titan_clip_215_000474_movie_t-1.jpg", "titan_clip_215_000474_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with a single narrow travel lane and no median has smooth pavement and light traffic that slows midblock. Ahead near the right edge, a white van is parked partly in the ego lane because no parking spot is available, narrowing the usable lane. A pedestrian in the center ahead walks from the left toward the right between vehicles and may enter the ego path, prompting caution and reduced speed. Several same-direction white vans further ahead proceed slowly past parked cars, creating a brief bottleneck.", "hazard_reasoning": "There is a white van parked on the right side of the road, in the ego lane, because there is no parking spot. The obstructing white van in the ego lane reduces available driving space, so the driver must carefully manoeuvre to avoid collision."}
{"id": "train_05005", "split": "train", "clip_key": "2020-0203-114632_052664_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "052664"}, "frames": ["2020-0203-114632_052664_movie_t-3.jpg", "2020-0203-114632_052664_movie_t-2.jpg", "2020-0203-114632_052664_movie_t-1.jpg", "2020-0203-114632_052664_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with two lanes each way and a short curb median stretches ahead; the ego vehicle proceeds in the left lane on clean, dry pavement with light traffic. A few oncoming cars move straight in the right-side lanes at a distance, not interacting with the ego path. Parked vans and cars line the left and right curbs near the junction, remaining stationary and not entering the lane. Overhead traffic signals govern the intersection ahead, and a round 30 sign on the left shows the posted speed. A small park bordered by low posts runs along the right, with no obstacles encroaching on the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05006", "split": "train", "clip_key": "2020-0203-114632_086191_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "086191"}, "frames": ["2020-0203-114632_086191_movie_t-3.jpg", "2020-0203-114632_086191_movie_t-2.jpg", "2020-0203-114632_086191_movie_t-1.jpg", "2020-0203-114632_086191_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop and yield to cyclist", "environment_perception": "An urban multilane intersection under an elevated expressway comes into view, with smooth asphalt and no median; traffic is light as the road bends slightly left ahead. A white van ahead in the ego lane proceeds straight under the viaduct at a steady pace. A cyclist wearing dark clothing crosses the near crosswalk from left to right ahead, moving across the ego vehicle's path and potentially entering the travel lane. On the right, two oncoming vans reach the junction and turn left across the intersection toward a side road, briefly passing across the ego lane before clearing. No salient traffic signal aspect or posted speed is clearly visible.", "hazard_reasoning": "There is a cyclist wearing black pants and a hoodie and crossing the street at a crosswalk, from the left side to the right side. The cyclist is entering your path at the crosswalk, so you must stop to avoid a potential collision."}
{"id": "train_05007", "split": "train", "clip_key": "2020-0205-152530_045504_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "045504"}, "frames": ["2020-0205-152530_045504_movie_t-3.jpg", "2020-0205-152530_045504_movie_t-2.jpg", "2020-0205-152530_045504_movie_t-1.jpg", "2020-0205-152530_045504_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial with smooth dry pavement runs straight between tall buildings, with a low barrier on the right separating the opposite carriageway; traffic is moderate and steady. A white box truck ahead in the ego lane moves away at a steady speed, effectively setting the ego vehicle's pace. A dark sedan in the right adjacent lane proceeds slightly ahead and continues straight, occupying the space beside the ego car and constraining an immediate lane change. A black taxi is stopped along the left curb near the lane edge, remaining stationary as the ego vehicle approaches and passes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05008", "split": "train", "clip_key": "2020-0225-102455_022159_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "022159"}, "frames": ["2020-0225-102455_022159_movie_t-3.jpg", "2020-0225-102455_022159_movie_t-2.jpg", "2020-0225-102455_022159_movie_t-1.jpg", "2020-0225-102455_022159_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban intersection with good pavement approaches on a two-lane left-side road, the near lane red-painted for left turns and partly divided by short bollards; traffic is light. A silver sedan directly ahead in the ego lane slows and begins a left turn at the corner, briefly blocking the lane and setting the pace. Cross traffic on the perpendicular road, including a black van, passes left to right in front of the junction and affects the turning gap. A white van waits along the left curb near the crosswalk without entering the lane. A 40 km/h speed-limit sign is visible on the left, and a pedestrian footbridge spans the road above.", "hazard_reasoning": "There is a silver sedan slowing in the ego lane, in front of the ego car, because they are making a turn at a corner. Driver should slow down to avoid a collision as the sedan reduces speed to turn."}
{"id": "train_05009", "split": "train", "clip_key": "2020-0207-101955_054550_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "054550"}, "frames": ["2020-0207-101955_054550_movie_t-3.jpg", "2020-0207-101955_054550_movie_t-2.jpg", "2020-0207-101955_054550_movie_t-1.jpg", "2020-0207-101955_054550_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with multiple same-direction lanes and no median has dry pavement and heavy flow near a signalized intersection where queues form. A black sedan ahead in the ego lane slows because of congestion ahead, constraining our speed. In the adjacent same-direction lane to the left, a white van moves slowly alongside toward the intersection. In the oncoming lanes to the right, a white car proceeds past the junction without entering our path. Overhead traffic signals and directional signs are visible above the roadway.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_05010", "split": "train", "clip_key": "2020-0204-103442_066648_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "066648"}, "frames": ["2020-0204-103442_066648_movie_t-3.jpg", "2020-0204-103442_066648_movie_t-2.jpg", "2020-0204-103442_066648_movie_t-1.jpg", "2020-0204-103442_066648_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each direction and no physical median stretches ahead on smooth pavement, with moderate traffic that bunches slightly. A black sedan directly ahead in the ego lane slows because of traffic congestion ahead, constraining the ego car's pace. Farther ahead in the same lane, a white truck moves slowly, contributing to the queue. In the oncoming lane to the right, a dark SUV approaches at a steady speed and passes without deviation. A pedestrian crossing sign is visible in the distance.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. You should slow down to adjust to reduced speeds ahead and maintain a safe distance."}
{"id": "train_05011", "split": "train", "clip_key": "titan_clip_1041_000042_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1041_000042_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1041_000042_movie_t-3_augB1.jpg", "titan_clip_1041_000042_movie_t-2_augB1.jpg", "titan_clip_1041_000042_movie_t-1_augB1.jpg", "titan_clip_1041_000042_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down and watch for cyclist", "environment_perception": "A narrow urban shopping street with a shared bidirectional lane and no median has dry, intact pavement and light, slow traffic. Ahead in the center, a cyclist in a white T-shirt rides away in the middle of the road, effectively setting the ego car's pace as the curbside is blocked by parked bicycles. Farther ahead near the left edge, a second cyclist also proceeds away and remains in the ego vehicle's path. In the distance, a small blue truck sits in the same-direction lane facing away, leaving a narrow passage between the storefront displays and curbside bikes.", "hazard_reasoning": "There is a cyclist wearing a white t-shirt, cycling in the middle of the road, away from the ego car, because the cycling lane is blocked. The driver should slow down to maintain a safe distance from the cyclist riding unpredictably in the center of the road."}
{"id": "train_05012", "split": "train", "clip_key": "titan_clip_815_000294_movie", "source": {"subset": "titan", "scenario": "clip_815", "frame": "000294"}, "frames": ["titan_clip_815_000294_movie_t-3.jpg", "titan_clip_815_000294_movie_t-2.jpg", "titan_clip_815_000294_movie_t-1.jpg", "titan_clip_815_000294_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban two-way street with one narrow lane per direction and no median runs between shops and a construction wall; the pavement is smooth and traffic is light. Near a zebra crossing at a small intersection, visibility stays clear. Ahead on the left in the ego lane, a gray delivery truck is parked close to the curb just before the crosswalk, its door opens and a person gets off, narrowing the lane and possibly encroaching on the ego path.", "hazard_reasoning": "There is a gray truck parked on the left side of the road, because a person opening its door and getting off from it. The driver should manoeuvre carefully around the parked truck since the person exiting may enter the driving lane, posing a collision risk aligned with the warning to manoeuvre carefully."}
{"id": "train_05013", "split": "train", "clip_key": "titan_clip_223_000336_movie", "source": {"subset": "titan", "scenario": "clip_223", "frame": "000336"}, "frames": ["titan_clip_223_000336_movie_t-3.jpg", "titan_clip_223_000336_movie_t-2.jpg", "titan_clip_223_000336_movie_t-1.jpg", "titan_clip_223_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban street with brick paving runs between tall buildings, apparently two-way with no median and good surface; traffic is light as the ego vehicle proceeds slowly. A small white car travels ahead in the same direction at low speed along the center of the lane. A pedestrian in black pants stands on the left beside a parked black van, about to enter the vehicle, close to the travel path. No oncoming vehicles are visible. Bright orange cones line the right edge, marking a curbside work area that further narrows the lane.", "hazard_reasoning": "There is a pedestrian wearing black pants, standing on the left side of the road, because he is about to enter his vehicle. The driver should manoeuvre carefully around the pedestrian to avoid a potential collision."}
{"id": "train_05014", "split": "train", "clip_key": "titan_clip_974_000186_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_974_000186_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_974_000186_movie_t-3_augB1.jpg", "titan_clip_974_000186_movie_t-2_augB1.jpg", "titan_clip_974_000186_movie_t-1_augB1.jpg", "titan_clip_974_000186_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision", "environment_perception": "In an urban setting, the ego vehicle approaches a narrow two-way street in the left lane at a railway level crossing. The pavement is dry and intact, there is no median, and vehicle traffic is light while pedestrian flow is heavy. Multiple pedestrians walk across the tracks directly ahead, moving both directions and occupying the ego lane, constraining progress. On the left edge of the road, a pedestrian in a gray T-shirt walks toward the ego in the roadway because the sidewalk is crowded, and could stray into the lane. On the right beside the rails, another pedestrian stands near the curb close to the ego path and may step out. The crossing barriers are raised and the signal units show no active lights.", "hazard_reasoning": "There is a pedestrian wearing a gray T-shirt and walking on the left side of the road, towards the ego car, because the sidewalk is filled with people. The pedestrian may step into the vehicle's path, so the driver should slow down to avoid a potential collision."}
{"id": "train_05015", "split": "train", "clip_key": "titan_clip_315_000246_movie", "source": {"subset": "titan", "scenario": "clip_315", "frame": "000246"}, "frames": ["titan_clip_315_000246_movie_t-3.jpg", "titan_clip_315_000246_movie_t-2.jpg", "titan_clip_315_000246_movie_t-1.jpg", "titan_clip_315_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for crossing pedestrian", "environment_perception": "A dense urban shopping street with a narrow one-lane carriageway paved in block stones has no divider and very light, slow vehicular flow amid many pedestrians. A pedestrian in a black shirt and shorts crosses directly ahead from left to right, occupying the lane and forcing the ego vehicle to wait. On the right edge, two pedestrians walk along the storefronts near the curb, remaining outside the lane as they pass. Far ahead, a small car sits near the center of the street among distant walkers, moving slowly and loosely setting the pace.", "hazard_reasoning": "A pedestrian wearing a black shirt and shorts is crossing in the middle of the road to the right side. The driver must stop to yield to the pedestrian and prevent a collision."}
{"id": "train_05016", "split": "train", "clip_key": "2020-0204-150838_061834_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_061834_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_061834_movie_t-3_augB1.jpg", "2020-0204-150838_061834_movie_t-2_augB1.jpg", "2020-0204-150838_061834_movie_t-1_augB1.jpg", "2020-0204-150838_061834_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs under an elevated expressway, the pavement is good, and traffic is heavy and slow. A white box truck is directly ahead in the ego lane and creeps forward, constraining the ego's pace. To the left, a gray van edges out from the curb and cuts into the ego lane ahead, taking advantage of a gap. On the right, a large dump truck moves alongside in the neighboring lane at a similar slow speed, close to the ego vehicle. Overhead blue direction signs indicate Chiba and Tatsumi and show Route 357.", "hazard_reasoning": "There is a gray van cutting into the ego lane, in front of the ego car, because there was space in the ego lane. Drivers should slow down to maintain safe distance and account for unpredictable merges."}
{"id": "train_05017", "split": "train", "clip_key": "titan_clip_41_000336_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_41_000336_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_41_000336_movie_t-3_augB1.jpg", "titan_clip_41_000336_movie_t-2_augB1.jpg", "titan_clip_41_000336_movie_t-1_augB1.jpg", "titan_clip_41_000336_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with no lane markings and cobblestone pavement runs straight between tall buildings, and traffic is light with low speeds. Ahead in the ego path, a woman wearing black trousers and a grey top crosses from right to left directly in front of the car, occupying the lane. A white minivan stands stopped at the right curb facing the same direction, taking up part of the roadway and limiting clearance. On the left near the bollards, a man walks away from the camera along the roadway edge, staying close to the travel path. Bicycles and shop displays line the right side, further narrowing the corridor.", "hazard_reasoning": "There is a woman wearing a pair of black trousers, a grey top, crossing the road, in front of the ego car. Driver should slow down because the pedestrian is crossing directly ahead and may continue into the vehicle's path."}
{"id": "train_05018", "split": "train", "clip_key": "titan_clip_242_000864_movie", "source": {"subset": "titan", "scenario": "clip_242", "frame": "000864"}, "frames": ["titan_clip_242_000864_movie_t-3.jpg", "titan_clip_242_000864_movie_t-2.jpg", "titan_clip_242_000864_movie_t-1.jpg", "titan_clip_242_000864_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "A narrow urban side street with no centerline and smooth pavement runs between buildings toward a small intersection, and vehicular traffic is absent while overall movement is slow due to pedestrians. On the left edge ahead, a group of three pedestrians walks away along the lane close to the curb, narrowing the usable path. Farther ahead near the center, a pedestrian in a white T-shirt and denim shorts walks away from the car within the lane, constraining the pace. At the junction ahead, another pedestrian crosses from right to left on the cross street and could enter the vehicle's path as it reaches the intersection. A blue one-way sign pointing straight is posted before the junction, and several parked bicycles line the right side, slightly encroaching on the roadway.", "hazard_reasoning": "There is a pedestrian wearing denim shorts and a white t-shirt and walking on the left side of the road, away from the ego car. The pedestrian could step into the roadway unexpectedly, so the driver should carefully manoeuvre around the pedestrian."}
{"id": "train_05019", "split": "train", "clip_key": "titan_clip_1022_000498_movie", "source": {"subset": "titan", "scenario": "clip_1022", "frame": "000498"}, "frames": ["titan_clip_1022_000498_movie_t-3.jpg", "titan_clip_1022_000498_movie_t-2.jpg", "titan_clip_1022_000498_movie_t-1.jpg", "titan_clip_1022_000498_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential street has a very narrow two-way carriageway with no centerline, smooth resurfaced pavement, and light traffic. Buildings and small trees line both sides with parking bays on the right. A cyclist wearing a black T-shirt rides toward the ego vehicle along the right edge, approaching as oncoming traffic and narrowing the usable lane. Several parked cars, a scooter, and bicycles sit in bays on the right, and there are no other moving vehicles or salient signals visible.", "hazard_reasoning": "A cyclist wearing a black t-shirt is cycling on the right side of the road, towards the ego car. The cyclist may move unpredictably into the vehicle's path, so the driver should slow down to maintain a safe distance."}
{"id": "train_05020", "split": "train", "clip_key": "titan_clip_979_000192_movie", "source": {"subset": "titan", "scenario": "clip_979", "frame": "000192"}, "frames": ["titan_clip_979_000192_movie_t-3.jpg", "titan_clip_979_000192_movie_t-2.jpg", "titan_clip_979_000192_movie_t-1.jpg", "titan_clip_979_000192_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban shopping street with a narrow two-way road and no median, paved with stone-like blocks in good condition, carries very light traffic. A worker in a reflective vest steps from the right curb into the lane near the ego vehicle and walks leftward across, briefly occupying the path. Farther ahead on the right side, a pedestrian carrying a handbag and wearing blue pants walks away from the ego car along the curb. Parked bicycles and a scooter line the right edge, leaving tight clearance as storefronts and utility poles sit close to the roadway.", "hazard_reasoning": "There is a pedestrian carrying a handbag and wearing blue pants, walking on the right side of the road, away from the ego car. The driver should be aware of this pedestrian as they may change direction toward the vehicle's path, requiring timely reaction."}
{"id": "train_05021", "split": "train", "clip_key": "2020-0203-154554_034110_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "034110"}, "frames": ["2020-0203-154554_034110_movie_t-3.jpg", "2020-0203-154554_034110_movie_t-2.jpg", "2020-0203-154554_034110_movie_t-1.jpg", "2020-0203-154554_034110_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the merging motorcycle", "environment_perception": "An urban multi-lane road runs under an elevated expressway with smooth pavement and heavy, slow same-direction traffic; no oncoming traffic is visible. A large white coach is directly ahead in the ego lane, barely moving and constraining the pace. To the left of the bus, a black motorcycle shifts left and merges into the left lane to bypass the queue, leaving the ego lane because of congestion ahead. In the adjacent right lane, a line of cars and small trucks remains nearly stationary. A white mini truck is stopped at the far right edge with its tailgate up, tightening space beside the queue.", "hazard_reasoning": "There is a black motorcycle changing from the ego-car lane to the left lane because of traffic congestion ahead. The driver should be aware because the motorcycle's unexpected merge could lead to a side impact if not anticipated."}
{"id": "train_05022", "split": "train", "clip_key": "2020-0203-154554_002314_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "002314"}, "frames": ["2020-0203-154554_002314_movie_t-3.jpg", "2020-0203-154554_002314_movie_t-2.jpg", "2020-0203-154554_002314_movie_t-1.jpg", "2020-0203-154554_002314_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane approach to a signalized intersection has no median and dry pavement, with moderate traffic that is stopped in the ego's direction. A black sedan is stopped directly ahead in the ego lane at the stop line because the signal shows red, constraining the ego car's pace. In the adjacent right lane a dark SUV waits slightly farther ahead, also stationary for the light. On the cross street, a white wagon travels from right to left through the junction, clearing in front of the waiting queue. The overhead traffic signal facing the ego approach displays a steady red.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. You should stop to maintain a safe distance and obey the red signal."}
{"id": "train_05023", "split": "train", "clip_key": "2020-0212-102546_007707_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "007707"}, "frames": ["2020-0212-102546_007707_movie_t-3.jpg", "2020-0212-102546_007707_movie_t-2.jpg", "2020-0212-102546_007707_movie_t-1.jpg", "2020-0212-102546_007707_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial curves left with flexible bollards forming a median between opposing flows; the pavement is dry and the scene shows moderate traffic with a developing queue ahead. A white box truck directly ahead in the ego lane is stopped because of traffic congestion ahead, holding the ego vehicle. To the right, an oncoming heavy truck advances in its lane, separated by the bollards and posing no conflict. Farther ahead in the same direction, several trucks queue through the curve, creeping and contributing to the slowdown.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The stopped truck indicates slow or halted traffic ahead, so the driver must stop to avoid a collision."}
{"id": "train_05024", "split": "train", "clip_key": "2020-0212-102546_081210_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "081210"}, "frames": ["2020-0212-102546_081210_movie_t-3.jpg", "2020-0212-102546_081210_movie_t-2.jpg", "2020-0212-102546_081210_movie_t-1.jpg", "2020-0212-102546_081210_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided roadway with high sound walls on both sides carries light to moderate same-direction traffic on a smooth single open lane, while a striped gore with flexible posts lines the right side toward a merge. A white van directly ahead in the ego lane pulls away slightly as a short queue is visible farther ahead, consistent with congestion ahead. To the right, a dark car proceeds along the adjacent lane past the gore and heads toward a merge that may enter the ego lane. Concrete barriers constrain the left shoulder.", "hazard_reasoning": "There is a white van driving away from the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to reduced traffic speeds caused by congestion."}
{"id": "train_05025", "split": "train", "clip_key": "2020-0205-103411_045849_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "045849"}, "frames": ["2020-0205-103411_045849_movie_t-3.jpg", "2020-0205-103411_045849_movie_t-2.jpg", "2020-0205-103411_045849_movie_t-1.jpg", "2020-0205-103411_045849_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection beneath stacked elevated roadways appears, with the ego vehicle in the left lane of a multilane approach; pavement is smooth and a metal fence borders the curbside verge on the right. Traffic is moderate and queued at the stop line. A black hatchback is stopped directly ahead in the ego lane because vehicles further ahead are stopped, holding the ego car in place. Farther ahead in the same lane a white box van is also stationary, extending the queue and constraining the pace. Cross traffic, including a white sedan from the right, moves through the intersection. The overhead traffic signal facing the ego shows red.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of stopped vehicles ahead. The driver should stop to avoid collision with the halted hatchback ahead."}
{"id": "train_05026", "split": "train", "clip_key": "2020-0226-140503_035440_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "035440"}, "frames": ["2020-0226-140503_035440_movie_t-3.jpg", "2020-0226-140503_035440_movie_t-2.jpg", "2020-0226-140503_035440_movie_t-1.jpg", "2020-0226-140503_035440_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs through a high-rise district with smooth pavement, a painted blue bicycle lane on the left, and a white guardrail on the right; traffic is heavy and slow. Directly ahead in the ego lane, a black van is stopped because of congestion, holding the ego car at a standstill. A pedestrian under an umbrella walks along the left sidewalk parallel to traffic, well outside the roadway and not interacting. Overhead blue guide signs indicate directions to the Shutoko expressway and Mejiro, and the right-hand lane is marked to diverge toward a ramp.", "hazard_reasoning": "There is a black van stopped in front of the ego car in the ego lane, because of traffic congestion. The van's brake lights are illuminated and it is halted due to congestion, requiring the driver to stop immediately to avoid a collision."}
{"id": "train_05027", "split": "train", "clip_key": "2020-0204-103442_004500_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "004500"}, "frames": ["2020-0204-103442_004500_movie_t-3.jpg", "2020-0204-103442_004500_movie_t-2.jpg", "2020-0204-103442_004500_movie_t-1.jpg", "2020-0204-103442_004500_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial in Japan shows three same-direction lanes with smooth pavement and a guardrail separating oncoming traffic to the right; flow is heavy and currently halted at a signal. A black car directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the left lane ahead, a white box truck is also stopped at the queue, limiting gaps. Slightly ahead in the right lane, a silver kei van rolls forward slowly toward the same stop line and could edge in front. Overhead traffic lights are clearly red above the intersection.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, because of the red traffic light. The driver should stop immediately to avoid rear-ending the halted vehicle under the red signal."}
{"id": "train_05028", "split": "train", "clip_key": "titan_clip_956_000096_movie", "source": {"subset": "titan", "scenario": "clip_956", "frame": "000096"}, "frames": ["titan_clip_956_000096_movie_t-3.jpg", "titan_clip_956_000096_movie_t-2.jpg", "titan_clip_956_000096_movie_t-1.jpg", "titan_clip_956_000096_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "A compact urban street with one lane each way and no median appears, the pavement smooth and traffic light as the ego-vehicle approaches a small intersection. Ahead on the left curb, a gray truck is parked while being loaded, narrowing the travel space. In the ego lane just before the truck, a white hatchback slows and moves right to pass it, momentarily setting the ego's pace. A pedestrian walks along the left sidewalk near the storefront by the truck but stays off the roadway.", "hazard_reasoning": "There is a gray truck parked on the left side of the road, because it is being loaded. The parked truck narrows the available lane space and may obstruct visibility, so the driver should manoeuvre carefully to avoid collision."}
{"id": "train_05029", "split": "train", "clip_key": "titan_clip_221_000870_movie", "source": {"subset": "titan", "scenario": "clip_221", "frame": "000870"}, "frames": ["titan_clip_221_000870_movie_t-3.jpg", "titan_clip_221_000870_movie_t-2.jpg", "titan_clip_221_000870_movie_t-1.jpg", "titan_clip_221_000870_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban narrow single-lane road with no median and smooth pavement is shown, and traffic is light. A white box truck ahead in the ego lane moves slowly toward the upcoming zebra crosswalk, constraining the ego vehicle's pace. A pedestrian wearing a blue shirt stands at the right-side building entrance near the crosswalk and edges toward the curb, and may step into the lane from the right. A road marking indicates a stop before the crosswalk at the approaching intersection.", "hazard_reasoning": "A pedestrian wearing a blue shirt and black pants is crossing at the pedestrian crosswalk to the right side of the road. The driver must stop immediately to avoid a collision as the pedestrian enters the vehicle's path."}
{"id": "train_05030", "split": "train", "clip_key": "titan_clip_303_000738_movie", "source": {"subset": "titan", "scenario": "clip_303", "frame": "000738"}, "frames": ["titan_clip_303_000738_movie_t-3.jpg", "titan_clip_303_000738_movie_t-2.jpg", "titan_clip_303_000738_movie_t-1.jpg", "titan_clip_303_000738_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked vehicle", "environment_perception": "An urban side street with smooth pavement and tight buildings forms a single narrow lane with no median, and traffic is light with no visible oncoming flow. A white hatchback is parked on the left side of the road near the ego vehicle, protruding into the lane and narrowing the passage. Farther ahead in the same lane, a white box truck is stopped by the left curb and partially blocks the lane. On the right sidewalk a green delivery cart and a parked bicycle remain off the roadway.", "hazard_reasoning": "There is a white hatchback parked on the left side of the road. A stationary vehicle reduces usable road width and may force sudden lane adjustments; the driver should carefully manoeuvre to avoid collision with the parked car."}
{"id": "train_05031", "split": "train", "clip_key": "2020-0205-103411_109037_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "109037"}, "frames": ["2020-0205-103411_109037_movie_t-3.jpg", "2020-0205-103411_109037_movie_t-2.jpg", "2020-0205-103411_109037_movie_t-1.jpg", "2020-0205-103411_109037_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of merging vehicle ahead", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs beside shops, separated from oncoming traffic to the right by a low raised median; the pavement is dry and traffic is moderate and steady. A white van ahead in the ego lane slows because the small dark car immediately in front of it merges left into the curb lane, briefly constraining the ego vehicle's pace. A black sedan slightly ahead in the right lane continues straight and overtakes the slowing vehicles without changing lanes. Farther ahead traffic bunches a little near an intersection beneath a pedestrian overpass but keeps moving, while parked cars sit along the right-side frontage.", "hazard_reasoning": "There is a white van slowing down in the ego lane, because the vehicle in front of it is merging into the left lane. The driver should be aware of merging vehicles ahead and anticipate potential speed changes to maintain a safe following distance."}
{"id": "train_05032", "split": "train", "clip_key": "titan_clip_325_000930_movie", "source": {"subset": "titan", "scenario": "clip_325", "frame": "000930"}, "frames": ["titan_clip_325_000930_movie_t-3.jpg", "titan_clip_325_000930_movie_t-2.jpg", "titan_clip_325_000930_movie_t-1.jpg", "titan_clip_325_000930_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the cone.", "environment_perception": "An urban back street with a single narrow unmarked lane runs between tall buildings; the pavement is dry and traffic is very light with no oncoming vehicles. A construction flatbed truck stands ahead in the ego lane near the center-left, blocking the path and constraining the ego vehicle's pace. Along the right edge, orange cones, including a traffic cone on the right side of the road, delineate a roadside work area beside temporary barriers. No signals or posted limits are visible, and no pedestrians or other moving vehicles appear.", "hazard_reasoning": "There is a traffic cone on the right side of the road. It marks a partial obstruction, so the driver should manoeuvre carefully to avoid it."}
{"id": "train_05033", "split": "train", "clip_key": "titan_clip_548_000318_movie", "source": {"subset": "titan", "scenario": "clip_548", "frame": "000318"}, "frames": ["titan_clip_548_000318_movie_t-3.jpg", "titan_clip_548_000318_movie_t-2.jpg", "titan_clip_548_000318_movie_t-1.jpg", "titan_clip_548_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban side street with a single narrow lane and no median runs between tall buildings; the pavement is smooth and motor traffic is very light with no vehicles visible. Two pedestrians carrying backpacks walk ahead in the middle of the lane away from the ego car, occupying the travel path and constraining its pace. A pedestrian on the right edge walks toward the camera along the curb, remaining outside the lane. At the left crosswalk area, a small group with a stroller moves along the curb and may enter the lane. Street signs on the left indicate a pedestrian zone and a no-parking restriction, and a pedestrian crossing sign is posted.", "hazard_reasoning": "There are two pedestrians carrying backpacks and walking in the middle of the road, away from the ego car. The driver should slow down because the pedestrians are occupying the driving lane and may not move aside promptly, increasing collision risk."}
{"id": "train_05034", "split": "train", "clip_key": "titan_clip_686_000126_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_686_000126_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_686_000126_movie_t-3_augB1.jpg", "titan_clip_686_000126_movie_t-2_augB1.jpg", "titan_clip_686_000126_movie_t-1_augB1.jpg", "titan_clip_686_000126_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of the squatting pedestrian", "environment_perception": "An urban commercial street with a single narrow two-way lane and clear edge lines shows smooth pavement and light vehicle traffic but many pedestrians. The ego vehicle approaches a cross street where a large stop marking is painted on the road. On the right, a pedestrian wearing a white shirt and gray pants is squatting beside a street stall very close to the roadway, near the ego path. On the left edge near the camera, a man with a backpack walks toward the vehicle partly in the lane, reducing available space. At the distant junction, a white car crosses from left to right on the intersecting street ahead.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and gray pants, and squatting on the right side of the road. The squatting pedestrian may step into the lane unexpectedly, so the driver should be aware of the pedestrian to avoid a collision."}
{"id": "train_05035", "split": "train", "clip_key": "2020-0127-132751_030153_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "030153"}, "frames": ["2020-0127-132751_030153_movie_t-3.jpg", "2020-0127-132751_030153_movie_t-2.jpg", "2020-0127-132751_030153_movie_t-1.jpg", "2020-0127-132751_030153_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban road with two same-direction lanes and no median runs between mid-rise buildings; the pavement looks smooth and traffic is light to moderate with steady movement. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. To the left, a beige sedan in the adjacent lane travels forward slightly faster, overtaking the slowing truck. Farther ahead in that left lane, a dark truck continues steadily away. A metal fence lines the right edge as a roadside barrier, and no prominent signals or signs are visible.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The truck's deceleration can quickly reduce following distance, so slow down to maintain a safe buffer."}
{"id": "train_05036", "split": "train", "clip_key": "2020-0227-104226_112513_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "112513"}, "frames": ["2020-0227-104226_112513_movie_t-3.jpg", "2020-0227-104226_112513_movie_t-2.jpg", "2020-0227-104226_112513_movie_t-1.jpg", "2020-0227-104226_112513_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane road passes under an overpass, with dry smooth pavement and heavy stop-and-go flow. No median is visible, and traffic is tightly queued in all lanes. Directly ahead, a red and white box truck in the ego lane is stopped in a queue, holding the ego vehicle due to congestion. To the left, a black van stands slightly ahead in the adjacent lane, keeping pace with the jam and limiting space to merge left. To the right, a black hatchback is halted beside the ego car in the neighboring lane. Roadside no-parking and no-stopping signs are visible.", "hazard_reasoning": "There is a red and white truck stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid colliding with the halted truck and maintain a safe following distance."}
{"id": "train_05037", "split": "train", "clip_key": "titan_clip_1126_000042_movie", "source": {"subset": "titan", "scenario": "clip_1126", "frame": "000042"}, "frames": ["titan_clip_1126_000042_movie_t-3.jpg", "titan_clip_1126_000042_movie_t-2.jpg", "titan_clip_1126_000042_movie_t-1.jpg", "titan_clip_1126_000042_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single undivided lane paved with stone blocks runs beside a riverside railing and trees; the surface looks good and traffic is light with no moving vehicles. A man wearing a black T-shirt and black shorts runs toward the camera along the right edge of the road, close to the curb and may enter the ego lane. Far ahead, a few pedestrians continue along the left side, walking away and not crossing. A scooter is parked partly in the lane near a building entrance on the left, and a car remains in an open garage. The road bends gently right with foliage narrowing sight lines.", "hazard_reasoning": "There is a man wearing a black t-shirt and black shorts and running on the right side of the road, toward the ego car. The pedestrian is running toward the vehicle path, so the driver should slow down to prevent a potential collision."}
{"id": "train_05038", "split": "train", "clip_key": "titan_clip_1255_000372_movie", "source": {"subset": "titan", "scenario": "clip_1255", "frame": "000372"}, "frames": ["titan_clip_1255_000372_movie_t-3.jpg", "titan_clip_1255_000372_movie_t-2.jpg", "titan_clip_1255_000372_movie_t-1.jpg", "titan_clip_1255_000372_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban residential two-way street with single narrow lanes and no median runs ahead on dry, slightly worn pavement, and traffic is light as the road bends gently right. A cyclist in a pink T-shirt approaches from ahead in the opposing direction, riding near the middle of the roadway because there is no bike lane, creating limited lateral space with the ego lane. Farther ahead, a small oncoming car proceeds toward the camera in its lane without slowing. On the right, a pedestrian walks along the sidewalk beside a row of parked cars, remaining off the roadway. Numerous parked vehicles line the right edge, slightly narrowing the usable lane.", "hazard_reasoning": "There is a cyclist wearing a pink t-shirt, cycling toward in front of, and towards the ego car, because there is no bike lane. You should manoeuvre carefully around the cyclist to maintain safe distance and avoid collision due to unpredictable movement."}
{"id": "train_05039", "split": "train", "clip_key": "2020-0213-143552_022121_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "022121"}, "frames": ["2020-0213-143552_022121_movie_t-3.jpg", "2020-0213-143552_022121_movie_t-2.jpg", "2020-0213-143552_022121_movie_t-1.jpg", "2020-0213-143552_022121_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multi-lane two-way road with no median and smooth pavement is shown, and traffic in the ego's direction is heavy and mostly stopped near an intersection. A green canvas-covered truck directly ahead in the ego lane is stopped because of congestion and blocks the path. Ahead left in the adjacent same-direction lane, a large white box truck is also halted, further constraining movement. In the oncoming lanes to the right, a silver van approaches slowly through the junction but remains separate from the ego's path. Overhead blue direction boards are visible above the intersection.", "hazard_reasoning": "There is a green truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary truck ahead."}
{"id": "train_05040", "split": "train", "clip_key": "2020-0217-110854_069162_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "069162"}, "frames": ["2020-0217-110854_069162_movie_t-3.jpg", "2020-0217-110854_069162_movie_t-2.jpg", "2020-0217-110854_069162_movie_t-1.jpg", "2020-0217-110854_069162_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane per direction and a yellow centerline runs between mid-rise buildings; the pavement looks smooth and same-direction traffic is momentarily stopped at a signalized intersection. A white truck is directly ahead in the ego lane, stopped for a red light and holding the ego vehicle. Ahead to the right, a city bus moves across the intersection from right to left on the cross street while our approach remains at a standstill. A white car near the left curb just beyond the truck is stationary close to the intersection and could merge after the signal. Overhead traffic lights facing the ego direction display red.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The stopped truck indicates that the ego-vehicle must stop promptly to avoid a collision due to the red light."}
{"id": "train_05041", "split": "train", "clip_key": "titan_clip_1074_000276_movie", "source": {"subset": "titan", "scenario": "clip_1074", "frame": "000276"}, "frames": ["titan_clip_1074_000276_movie_t-3.jpg", "titan_clip_1074_000276_movie_t-2.jpg", "titan_clip_1074_000276_movie_t-1.jpg", "titan_clip_1074_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian controlling traffic.", "environment_perception": "A narrow urban two-way road with a double yellow centerline runs slightly uphill toward an underpass; the pavement is dry and intact, and traffic is light. Two work trucks stand along the right curb in the oncoming lane, creating a roadside work area that narrows that side. On the right near the centerline, a pedestrian in a yellow vest and helmet stands and directs traffic, controlling the flow and effectively setting the ego vehicle's pace. Another person waits by the trucks off the roadway, and no oncoming vehicles are visible.", "hazard_reasoning": "There is a pedestrian wearing a yellow vest and helmet, standing on the right side of the road, because they are controlling the traffic. They may signal or step into the lane unexpectedly, so the driver must remain alert and adjust speed as needed."}
{"id": "train_05042", "split": "train", "clip_key": "titan_clip_90_000030_movie", "source": {"subset": "titan", "scenario": "clip_90", "frame": "000030"}, "frames": ["titan_clip_90_000030_movie_t-3.jpg", "titan_clip_90_000030_movie_t-2.jpg", "titan_clip_90_000030_movie_t-1.jpg", "titan_clip_90_000030_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked sedan ahead", "environment_perception": "An urban commercial street with two-way, two-lane traffic has smooth pavement, no median, and light flow. The left lane is the ego lane. On the left shoulder near the ego vehicle, a black sedan is parked beside orange cones, slightly intruding into the ego lane. Ahead to the right, a dark minivan stands by the curb in the oncoming lane, also encroaching and narrowing the corridor between the parked vehicles. A pedestrian on the right sidewalk walks toward the camera near the curb, while another person waits farther ahead by a pole, both remaining off the roadway. Cones line both curbs near an unsignalized intersection.", "hazard_reasoning": "There is a black sedan parked on the left side of the road. This parked vehicle may partially obstruct the lane, so the driver should be aware to maintain a safe clearance."}
{"id": "train_05043", "split": "train", "clip_key": "titan_clip_146_000546_movie", "source": {"subset": "titan", "scenario": "clip_146", "frame": "000546"}, "frames": ["titan_clip_146_000546_movie_t-3.jpg", "titan_clip_146_000546_movie_t-2.jpg", "titan_clip_146_000546_movie_t-1.jpg", "titan_clip_146_000546_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban four-way intersection with single-lane approaches is ahead; the pavement is clean and dry, and traffic is light. The ego vehicle faces a marked crosswalk across its path. A pedestrian wearing a black T-shirt and carrying a backpack crosses ahead from left to right in the crosswalk, directly across the ego lane and governing its pace. On the left curb another pedestrian stands near the zebra markings, clear of the lane. On the right side of the junction, a black taxi travels across from right to left on the cross street, moving through the intersection without turning toward the ego path. Parked vehicles line the left curb near the corner.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and carrying a backpack, crossing the street in the crosswalk, from the left side to the right. The driver must anticipate the pedestrian's path and adjust speed to avoid a collision, aligning with the need to carefully manoeuvre around them."}
{"id": "train_05044", "split": "train", "clip_key": "2020-0225-102455_071993_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_071993_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_071993_movie_t-3_augB1.jpg", "2020-0225-102455_071993_movie_t-2_augB1.jpg", "2020-0225-102455_071993_movie_t-1_augB1.jpg", "2020-0225-102455_071993_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop now.", "environment_perception": "An urban three-lane arterial runs between tall buildings on dry, well-kept pavement, with heavy, slow-moving traffic. A white van directly ahead in the ego lane slows with brake lights on because congestion builds further up the lane, constraining the ego vehicle's pace. To the right, a black taxi and other cars inch forward in the adjacent lane alongside the van, keeping close spacing that limits lane changes. On the left curb lane, several delivery vans and a truck stand partly in the lane with rear doors open as workers handle cargo, narrowing the margin. Overhead signage shows straight arrows for all lanes, and an electronic board ahead displays messages.", "hazard_reasoning": "There is a white van slowing down in the ego lane, because of traffic congestion ahead. The van's reduced speed indicates queuing traffic ahead, which could require a sudden stop; the driver should prepare to stop to maintain a safe following distance."}
{"id": "train_05045", "split": "train", "clip_key": "titan_clip_367_000252_movie", "source": {"subset": "titan", "scenario": "clip_367", "frame": "000252"}, "frames": ["titan_clip_367_000252_movie_t-3.jpg", "titan_clip_367_000252_movie_t-2.jpg", "titan_clip_367_000252_movie_t-1.jpg", "titan_clip_367_000252_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with no center line and smooth asphalt runs between shops, and traffic is light. Ahead, a small delivery van is stopped at the right curb with its rear open, protruding slightly into the lane and constraining the path. In front of the ego car, a man wearing a white shirt and black pants walks from the right side of the street to the left, crossing the vehicle's path. Another person stands on the right sidewalk near the van, staying at the curb. Cones, a hand truck, and parked bicycles cluster near the van and along the curbs, creating minor roadside obstructions.", "hazard_reasoning": "There is a man wearing a white shirt and black pants and walking from the right side of the street to the left side of the street, in front of the ego car. The pedestrian is crossing directly in front of the vehicle, so the driver should slow down to avoid a collision."}
{"id": "train_05046", "split": "train", "clip_key": "titan_clip_1296_000546_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1296_000546_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1296_000546_movie_t-3_augB1.jpg", "titan_clip_1296_000546_movie_t-2_augB1.jpg", "titan_clip_1296_000546_movie_t-1_augB1.jpg", "titan_clip_1296_000546_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban two-lane two-way road curves right past construction fencing and industrial buildings, divided by double yellow lines with smooth pavement; traffic is light and the ego lane stays open. A silver van ahead approaches in the oncoming lane near the centerline as it follows the bend, becoming the main opposing presence. A black sedan farther right also travels toward the camera in the oncoming lane, passing by without encroaching. On the left sidewalk, two pedestrians walk behind a guardrail along the fence. The roadway has no marked bike lane.", "hazard_reasoning": "There is a male cyclist on a blue bike, on the left side of the road, in the ego lane, cycling towards the ego-car, because there is no bike lane. The driver should carefully manoeuvre to avoid colliding with the cyclist in the ego lane."}
{"id": "train_05047", "split": "train", "clip_key": "titan_clip_1026_000282_movie", "source": {"subset": "titan", "scenario": "clip_1026", "frame": "000282"}, "frames": ["titan_clip_1026_000282_movie_t-3.jpg", "titan_clip_1026_000282_movie_t-2.jpg", "titan_clip_1026_000282_movie_t-1.jpg", "titan_clip_1026_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian", "environment_perception": "A narrow urban two-way street runs between close buildings, with embedded rail tracks down the center, no median, and smooth pavement; traffic is light with no nearby moving vehicles in either direction. Ahead on the left edge, a pedestrian in a black shirt and gray pants carrying a bag walks away from the ego car along the road margin, close to the travel path. On the right near the curb, a person stands with a bicycle among several parked bikes at the edge of the lane. Farther ahead on the right, another pedestrian waits outside a storefront near the curb. Chains on posts line the right sidewalk, and an orange raised section spans the tracks ahead.", "hazard_reasoning": "A pedestrian wearing a black shirt, gray pants, and carrying a bag, is walking on the left side of the road, away from the ego car. The pedestrian's proximity to the roadway ahead could lead them to step into the vehicle's path, so the driver should be cautious and prepared to slow down."}
{"id": "train_05048", "split": "train", "clip_key": "2020-0225-102455_033075_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "033075"}, "frames": ["2020-0225-102455_033075_movie_t-3.jpg", "2020-0225-102455_033075_movie_t-2.jpg", "2020-0225-102455_033075_movie_t-1.jpg", "2020-0225-102455_033075_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down and maintain safe distance", "environment_perception": "An urban arterial with two same-direction lanes runs beside a fenced median separating oncoming traffic; the pavement is smooth and dry, with light flow in the ego's direction and heavier flow opposite. Ahead, a white sedan slightly left straddles the left lane and the ego lane as it queues for a red traffic light, narrowing the usable space. A cyclist rides in the left lane near the curb a short distance ahead, pedaling steadily in the same direction alongside the slow queue. Farther ahead in the left lane, a small van continues toward the signal behind the sedan. Overhead route signs are visible above the roadway, and metal railings line both the median and the left sidewalk.", "hazard_reasoning": "The white sedan is straddling the left lane and ego lane, in front of the ego car, because of a red traffic light. This positioning across lanes reduces available space and may require the driver to slow down to avoid a collision with the stopped vehicle ahead."}
{"id": "train_05049", "split": "train", "clip_key": "titan_clip_1227_000162_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1227_000162_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1227_000162_movie_t-3_augB1.jpg", "titan_clip_1227_000162_movie_t-2_augB1.jpg", "titan_clip_1227_000162_movie_t-1_augB1.jpg", "titan_clip_1227_000162_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban back street with a single usable lane curves gently right, with worn pavement and green edge strips; cones and nose-in parked vans pinch the right margin. Traffic is light, and a couple of small delivery trucks stand ahead in the same direction. A pedestrian in a black shirt carrying a handbag walks away from the ego in the middle of the road amid crowded sidewalks, occupying the lane and dictating a slow approach. On the left near the curb, two pedestrians walk toward the ego, staying close to the edge but within the roadway. Farther ahead near the trucks, several people walk along the street beside the vehicles, creating a narrow passing gap, while a white van sits on a sloped driveway at the right.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a handbag, walking in the middle of the road, away from the ego car, because the sidewalk is crowded. The driver should slow down to avoid a potential collision with the pedestrian crossing in the lane."}
{"id": "train_05050", "split": "train", "clip_key": "2020-0220-102630_056282_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "056282"}, "frames": ["2020-0220-102630_056282_movie_t-3.jpg", "2020-0220-102630_056282_movie_t-2.jpg", "2020-0220-102630_056282_movie_t-1.jpg", "2020-0220-102630_056282_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three lanes in the ego direction runs beneath a pedestrian overpass; the asphalt looks smooth and traffic flows at a moderate, steady pace. A guardrail lines the right edge separating another carriageway. A yellow van ahead in the ego lane proceeds with the moving traffic, effectively setting the ego vehicle's pace. To the right, a white van slightly ahead in the adjacent lane continues straight at similar speed, traveling parallel to the ego car and limiting an immediate right merge. In the left lane farther ahead, a small passenger car advances steadily, remaining outside the ego path.", "hazard_reasoning": "There is a yellow van driving forward in the ego lane in front of the ego car, because traffic is flowing. The truck ahead partially obstructs the view, increasing the risk of unexpected hazards, so the driver should maintain a safe distance by following the vehicle ahead."}
{"id": "train_05051", "split": "train", "clip_key": "2020-0220-102630_076087_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "076087"}, "frames": ["2020-0220-102630_076087_movie_t-3.jpg", "2020-0220-102630_076087_movie_t-2.jpg", "2020-0220-102630_076087_movie_t-1.jpg", "2020-0220-102630_076087_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road with dry, well-kept pavement runs between mid-rise buildings, with a curbside bicycle-marked shoulder on the left and a guardrail on the right; traffic is light to moderate and flows smoothly. A white van ahead in the ego lane drives away from the ego car at a steady pace, setting the headway. In the adjacent right lane slightly ahead, a silver minivan continues straight at similar speed, paralleling the ego vehicle without merging. Farther ahead, a darker car leads the stream in both lanes, keeping the pace uniform. Overhead gantries and a pedestrian overpass span the roadway, and no obstacles are visible.", "hazard_reasoning": "There is a white van driving away from the ego car, in the ego lane. The van could slow or brake suddenly, so maintain a safe following distance by following the vehicle ahead."}
{"id": "train_05052", "split": "train", "clip_key": "2020-0204-150838_018850_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "018850"}, "frames": ["2020-0204-150838_018850_movie_t-3.jpg", "2020-0204-150838_018850_movie_t-2.jpg", "2020-0204-150838_018850_movie_t-1.jpg", "2020-0204-150838_018850_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane divided arterial runs past offices and trees under overcast skies, with smooth pavement and light-to-moderate, steady traffic. Ahead in the ego lane, a white van drives steadily and sets the pace at a comfortable following distance. In the lane to the right, a black sedan travels slightly ahead and continues straight without encroaching on the ego path. In the lane to the left, a dark taxi proceeds forward at a similar speed, remaining in its lane. A landscaped median and roadside hedges separate directions and edges, and no signals or speed signs are prominent.", "hazard_reasoning": "There is a white van driving in the ego lane. A vehicle directly ahead may brake suddenly or change speed, so the driver should be prepared to follow at a safe distance as advised."}
{"id": "train_05053", "split": "train", "clip_key": "titan_clip_243_000486_movie", "source": {"subset": "titan", "scenario": "clip_243", "frame": "000486"}, "frames": ["titan_clip_243_000486_movie_t-3.jpg", "titan_clip_243_000486_movie_t-2.jpg", "titan_clip_243_000486_movie_t-1.jpg", "titan_clip_243_000486_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban back street with smooth pavement and no marked center line shows light, slow traffic. A white van is stopped ahead on the left in the ego lane for unloading, partly blocking the lane. Just beyond it, a small delivery cart continues slowly in the same lane, constraining the ego vehicle's pace. A man on the right edge of the roadway walks toward the camera close to the travel lane near the parked van. Farther ahead, several small vehicles and handcarts cluster along the right curb for loading, narrowing the corridor. No signals or posted speeds are prominent.", "hazard_reasoning": "There is a white van parked in the ego lane, on the left side of the road, because it is being unloaded. The parked van obstructs the lane and requires careful manoeuvring around it."}
{"id": "train_05054", "split": "train", "clip_key": "2020-0220-151845_043443_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "043443"}, "frames": ["2020-0220-151845_043443_movie_t-3.jpg", "2020-0220-151845_043443_movie_t-2.jpg", "2020-0220-151845_043443_movie_t-1.jpg", "2020-0220-151845_043443_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs beneath an elevated expressway, with multiple same-direction lanes and a metal rail on the right; the asphalt appears damp and traffic is heavy and slow. Directly ahead in the ego lane, a red flatbed truck covered with a yellow tarp is stopped because of congestion ahead, fully blocking the ego vehicle's path. To the right, a white van in the curb lane queues beside the truck near merge markings and creeps forward, positioned to enter the ego lane. To the left, a black car and a large dump truck in the adjacent lane crawl forward parallel to the ego, further constraining movement.", "hazard_reasoning": "There is a red ruck stopped in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should stop to prevent a collision with the halted vehicle in the congested traffic."}
{"id": "train_05055", "split": "train", "clip_key": "2020-0217-110854_004205_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "004205"}, "frames": ["2020-0217-110854_004205_movie_t-3.jpg", "2020-0217-110854_004205_movie_t-2.jpg", "2020-0217-110854_004205_movie_t-1.jpg", "2020-0217-110854_004205_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street forms a narrow two-way road with one lane each direction and no median; the ego proceeds in the left lane on wet but intact pavement while overall flow is slow. A white sedan directly ahead in the ego lane slows because congestion builds, and it controls the ego car's pace. Farther ahead in the same direction, a white box truck moves very slowly near midblock, creating the queue that delays following traffic. On the right sidewalk, a woman at a storefront stands close to the curb and turns toward the street, potentially nearing the ego path. A traffic signal is visible farther ahead above the roadway.", "hazard_reasoning": "There is a white sedan slowing down in the ego lane, in front of the ego car because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adapt to the reduced speed due to the congested traffic ahead."}
{"id": "train_05056", "split": "train", "clip_key": "2020-0228-150133_063118_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "063118"}, "frames": ["2020-0228-150133_063118_movie_t-3.jpg", "2020-0228-150133_063118_movie_t-2.jpg", "2020-0228-150133_063118_movie_t-1.jpg", "2020-0228-150133_063118_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban four-lane two-way arterial with a painted diagonal median and smooth pavement carries moderate traffic, and flow is steady in both directions. A dark sedan ahead in the ego lane proceeds at a similar speed, setting the pace. Slightly to the left, a small box truck in the adjacent same-direction lane continues forward a short distance ahead, limiting opportunities to change lanes. In the opposing lanes to the right, a motorcycle and a white minivan approach near the median, remaining separated from the ego path. An overhead blue direction board lists destinations and shows a distance of 300 m to an upcoming junction.", "hazard_reasoning": "There are no visible hazards such as pedestrians, debris, sudden stops, or construction in the caption. The road conditions are clear and traffic is flowing normally, so the driver can continue at a moderate speed without adjustments."}
{"id": "train_05057", "split": "train", "clip_key": "titan_clip_598_000306_movie", "source": {"subset": "titan", "scenario": "clip_598", "frame": "000306"}, "frames": ["titan_clip_598_000306_movie_t-3.jpg", "titan_clip_598_000306_movie_t-2.jpg", "titan_clip_598_000306_movie_t-1.jpg", "titan_clip_598_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial side street with a narrow two-way carriageway and no centerline unfolds ahead; the asphalt is smooth, there is no median, and traffic is light with no moving vehicles. Ahead along the right edge, a man in a white shirt, black pants, and a cap walks toward the ego-vehicle while carrying a bag, using the roadway because the sidewalk is crowded with parked bicycles and pedestrians, and he encroaches into the travel lane. At the near right, another pedestrian passes close to the curb, partly in the lane, which tightens clearance. No traffic signals are visible. Numerous parked bicycles, cones, and storefront displays line both sides, further narrowing the usable lane.", "hazard_reasoning": "There is a tall man, wearing a white shirt, black pants, and a cap, carrying a bag, walking on the right side of the road towards the ego-car, because the sidewalk is congested. The driver should carefully manoeuvre around him to avoid collision."}
{"id": "train_05058", "split": "train", "clip_key": "2020-0228-102841_013035_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "013035"}, "frames": ["2020-0228-102841_013035_movie_t-3.jpg", "2020-0228-102841_013035_movie_t-2.jpg", "2020-0228-102841_013035_movie_t-1.jpg", "2020-0228-102841_013035_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one lane per direction and no median; the pavement is dry and the overall traffic is heavy and mostly stopped. Directly ahead in the ego lane, a black sedan is stopped because of congestion further up, holding the ego vehicle in place. To the right, oncoming vehicles, including a white refrigerated truck and a taxi, edge forward past the centerline, passing close as the lanes are narrow. On the left curb, a delivery truck is parked with its rear open while a worker stands among stacked crates, partially narrowing the lane but remaining stationary.", "hazard_reasoning": "There is a black sedan stopped in the ego lane because of traffic congestion ahead. The driver needs to stop to prevent a collision due to the sudden slowdown."}
{"id": "train_05059", "split": "train", "clip_key": "titan_clip_469_000408_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_469_000408_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_469_000408_movie_t-3_augB1.jpg", "titan_clip_469_000408_movie_t-2_augB1.jpg", "titan_clip_469_000408_movie_t-1_augB1.jpg", "titan_clip_469_000408_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian in roadway", "environment_perception": "A narrow urban backstreet with interlocking block pavement lacks a centerline or median and has no marked sidewalks, so pedestrians share the roadway; traffic is light with no other vehicles visible. A man in a white shirt and dark pants carrying a bag walks in the middle of the road toward the ego vehicle, occupying its path and potentially constraining its pace. Farther ahead, two pedestrians proceed away along the center of the lane in front of the ego vehicle, continuing steadily in the same path. Another person stands near the left storefront edge, stationary just off the travelway and not affecting movement.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, carrying a bag, and walking in the middle of the road, towards the ego car, because there is no sidewalk. The driver should slow down to avoid colliding with a pedestrian walking in the roadway."}
{"id": "train_05060", "split": "train", "clip_key": "2020-0212-102546_053139_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "053139"}, "frames": ["2020-0212-102546_053139_movie_t-3.jpg", "2020-0212-102546_053139_movie_t-2.jpg", "2020-0212-102546_053139_movie_t-1.jpg", "2020-0212-102546_053139_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs straight with a low planted median separating oncoming traffic; the pavement is dry and intact and traffic moves at a moderate, steady pace. A silver van directly ahead in the ego lane proceeds at a steady speed and effectively sets the ego vehicle's pace. To the left, a large green-and-white city bus in the adjacent lane rolls slightly ahead while slowing near the intersection, remaining in its lane and not encroaching on the ego path. On the right beside the median, a black sedan in the neighboring lane creeps forward slightly ahead of the ego car, relevant if a lane change is attempted.", "hazard_reasoning": "There is a silver van driving in front of the ego car in the ego lane. Follow the vehicle ahead to safely decelerate as it stops at the red light."}
{"id": "train_05061", "split": "train", "clip_key": "2020-0206-142535_019704_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "019704"}, "frames": ["2020-0206-142535_019704_movie_t-3.jpg", "2020-0206-142535_019704_movie_t-2.jpg", "2020-0206-142535_019704_movie_t-1.jpg", "2020-0206-142535_019704_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement and a metal divider on the right runs between mid-rise buildings; traffic is moderate and starts moving through a signalized intersection. A gray sedan directly ahead in the ego lane accelerates from the stop line as the light turns green, setting the ego vehicle's pace. Slightly ahead to the left, a black minivan continues straight in the adjacent lane at a similar speed, remaining parallel without merging. Farther ahead in the same direction, a white box truck proceeds straight beyond the junction, leading a short line of vehicles. The signal ahead is green.", "hazard_reasoning": "There is a gray sedan accelerating ahead of the ego-car, in the ego lane, because the traffic light ahead has turned green. The gray sedan's sudden acceleration signals the green light change; follow it promptly to maintain safe distance and keep traffic flow."}
{"id": "train_05062", "split": "train", "clip_key": "2020-0228-102841_029313_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "029313"}, "frames": ["2020-0228-102841_029313_movie_t-3.jpg", "2020-0228-102841_029313_movie_t-2.jpg", "2020-0228-102841_029313_movie_t-1.jpg", "2020-0228-102841_029313_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "be aware of traffic cones on the left", "environment_perception": "An urban two-way road without a median approaches a wide signalized intersection; the pavement is clean and dry and traffic is light. Cones line the left edge of the ego lane at a small roadside work area, narrowing space near the curb. A pedestrian on the left waits at the crosswalk beside the cones and may step into the ego lane. On the right, a white car from the cross street edges forward to turn into the intersection, potentially crossing ahead of the ego vehicle. Another pedestrian under the elevated walkway on the left continues along the sidewalk without entering the roadway.", "hazard_reasoning": "There are traffic cones on the left side of the ego lane. These cones indicate a construction area that may narrow the lane, so the driver should be aware to stay clear of the cones."}
{"id": "train_05063", "split": "train", "clip_key": "2020-0207-101955_108105_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "108105"}, "frames": ["2020-0207-101955_108105_movie_t-3.jpg", "2020-0207-101955_108105_movie_t-2.jpg", "2020-0207-101955_108105_movie_t-1.jpg", "2020-0207-101955_108105_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, the asphalt smooth and traffic heavy and mostly stopped in the same direction. A blue sedan directly ahead in the ego lane is stopped because congestion blocks the way. Farther ahead in the same lane, a tall box truck inches forward and effectively sets the pace. In the adjacent left lane, a flatbed truck with a green-tarped load waits alongside and slightly ahead, limiting the forward view. To the right, a queue of cars including a red hatchback and a white van creeps in parallel.", "hazard_reasoning": "There is a blue Sedan stopped in front of the ego car because of traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle."}
{"id": "train_05064", "split": "train", "clip_key": "2020-0217-110854_071572_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-110854_071572_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-110854_071572_movie_t-3_augB1.jpg", "2020-0217-110854_071572_movie_t-2_augB1.jpg", "2020-0217-110854_071572_movie_t-1_augB1.jpg", "2020-0217-110854_071572_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with left-hand traffic runs between tree-lined sidewalks and storefronts, the lanes divided by a wide painted median with chevrons; the pavement is dry and smooth, and overall flow is light to moderate with brief slowing. A white truck directly ahead in the ego lane slows because vehicles are queuing farther up the road, constraining the ego car's pace. Farther ahead in the same direction, several cars also move slowly toward the cluster, sustaining the congestion. Oncoming traffic in the opposite lanes to the right proceeds steadily without interacting with the ego path. Parked vehicles line the curbside outside the travel lane.", "hazard_reasoning": "There's a white truck slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to reduced speeds caused by congestion."}
{"id": "train_05065", "split": "train", "clip_key": "2020-0228-150133_013404_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "013404"}, "frames": ["2020-0228-150133_013404_movie_t-3.jpg", "2020-0228-150133_013404_movie_t-2.jpg", "2020-0228-150133_013404_movie_t-1.jpg", "2020-0228-150133_013404_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road in Japan, narrow with guardrails and storefronts, has smooth pavement and very slow traffic in the left lane while the oncoming lane to the right appears open. A gray van directly ahead in the ego lane stands still because of congestion, holding the ego vehicle. Farther ahead in the same lane, a large bus is stopped near a bus stop, forming the queue and blocking forward movement. Several small vans are parked along the left curb by shops, narrowing the roadside but staying out of the travel lane. No pedestrians or oncoming vehicles are visible.", "hazard_reasoning": "There is a gray van which has stopped in front of the ego car because of traffic congestion ahead. Stop to maintain safe distance and avoid collision with the halted van."}
{"id": "train_05066", "split": "train", "clip_key": "titan_clip_1279_000528_movie", "source": {"subset": "titan", "scenario": "clip_1279", "frame": "000528"}, "frames": ["titan_clip_1279_000528_movie_t-3.jpg", "titan_clip_1279_000528_movie_t-2.jpg", "titan_clip_1279_000528_movie_t-1.jpg", "titan_clip_1279_000528_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down and watch for the pedestrian", "environment_perception": "A narrow urban street with a single vehicle lane runs between midrise buildings; the pavement is smooth and vehicular flow is light while many pedestrians are present. On the right edge ahead, a pedestrian in a white shirt with a backpack walks away along the curb, close to the ego lane and may enter its path. Farther ahead near the middle of the lane, two pedestrians walk away in the roadway, directly ahead of the ego vehicle and likely to constrain its pace. On the left by the curb, another man walks past a parked taxi near the travel lane. A parked scooter and the taxi narrow the available space.", "hazard_reasoning": "A pedestrian wearing a white shirt and backpack is walking along the right side of the road, away from the ego car. Slow down because the pedestrian could step into the lane unexpectedly, requiring extra caution."}
{"id": "train_05067", "split": "train", "clip_key": "titan_clip_982_000444_movie", "source": {"subset": "titan", "scenario": "clip_982", "frame": "000444"}, "frames": ["titan_clip_982_000444_movie_t-3.jpg", "titan_clip_982_000444_movie_t-2.jpg", "titan_clip_982_000444_movie_t-1.jpg", "titan_clip_982_000444_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single shared-traffic lane runs between shops; the pavement is smooth but the corridor is tight, and traffic is light with no oncoming vehicles. A man in a yellow T-shirt and blue pants walks toward the ego along the right edge of the roadway, moving around a utility pole that forces him into the lane and could enter the ego path. A pedestrian in a white shirt stands at the near right curb beside a bike rack, lingering at the edge without stepping out. Far ahead, a small car in the same direction continues away in the middle of the lane. Rows of parked bicycles and close-set utility poles further narrow the passage.", "hazard_reasoning": "There is man wearing a yellow T-shirt and blue pants and walking on the right side of the road, toward the ego car, because of a utility pole in the way. The pedestrian may unexpectedly move into the driving lane to avoid the pole, so the driver should slow down to maintain safety."}
{"id": "train_05068", "split": "train", "clip_key": "2020-0220-151845_055852_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "055852"}, "frames": ["2020-0220-151845_055852_movie_t-3.jpg", "2020-0220-151845_055852_movie_t-2.jpg", "2020-0220-151845_055852_movie_t-1.jpg", "2020-0220-151845_055852_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs under an elevated structure with a concrete wall on the left; the wet pavement and close spacing show heavy stop-and-go traffic. Ahead in the ego lane, a pink-and-yellow truck with a tarped load is stopped because of congestion, holding the ego vehicle at a standstill. In the adjacent right lane, a silver van slightly ahead crawls forward alongside, limiting room for a lane change. Farther ahead in the right lane, a small cargo truck inches forward with the queue. An overhead blue direction sign and a pedestrian overpass span the roadway.", "hazard_reasoning": "There is a pink-and-yellow truck stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted truck caused by the congestion ahead."}
{"id": "train_05069", "split": "train", "clip_key": "2020-0131-103016_015294_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "015294"}, "frames": ["2020-0131-103016_015294_movie_t-3.jpg", "2020-0131-103016_015294_movie_t-2.jpg", "2020-0131-103016_015294_movie_t-1.jpg", "2020-0131-103016_015294_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial with three same-direction lanes has smooth asphalt and clear markings, and traffic is queued at an intersection under an overhead red signal. Ahead in the ego lane, a silver minivan is stopped for the red light and holds the ego vehicle's pace. To the left, a yellow sedan slightly ahead eases to a stop in its lane, pacing the ego car and limiting lane changes. To the right near the curb, a small white pickup truck waits in the right-turn lane to turn at the junction and does not enter the ego lane.", "hazard_reasoning": "There is a silver minivan stopped in the ego lane in front of the ego car, because of the red traffic light. The driver should stop to avoid rear-ending the minivan at the red light."}
{"id": "train_05070", "split": "train", "clip_key": "titan_clip_206_000504_movie", "source": {"subset": "titan", "scenario": "clip_206", "frame": "000504"}, "frames": ["titan_clip_206_000504_movie_t-3.jpg", "titan_clip_206_000504_movie_t-2.jpg", "titan_clip_206_000504_movie_t-1.jpg", "titan_clip_206_000504_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the obstruction", "environment_perception": "An urban shopping street with a single narrow lane is paved with block-patterned surfacing and lined with bollards; traffic is light and slow. A small white truck ahead in the ego lane moves slowly, constraining the ego car, while a second truck farther ahead proceeds in the same direction. A pedestrian wearing a white shirt and black pants walks away from the camera along the left side, remaining outside the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants and walking away from the ego car on the right side of the road. The driver should manoeuvre carefully around the obstruction to maintain a safe distance from the pedestrian."}
{"id": "train_05071", "split": "train", "clip_key": "titan_clip_699_000144_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_699_000144_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_699_000144_movie_t-3_augB1.jpg", "titan_clip_699_000144_movie_t-2_augB1.jpg", "titan_clip_699_000144_movie_t-1_augB1.jpg", "titan_clip_699_000144_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with shops and apartments has no center line and smooth pavement, and there are no other vehicles, so movement is slow and shaped by pedestrians. Ahead in the middle of the road, a pedestrian wearing a white shirt and shorts walks away from the ego car, occupying the vehicle's path. On the left edge near the building, a man in dark clothes walks toward the ego vehicle along the roadway margin, close to the lane. On the right by a storefront, another pedestrian walks toward the ego vehicle along the brick verge at the edge of the lane. Farther ahead, a small group of people stand and move near the roadway, narrowing the passage, and potted plants and shop displays encroach slightly into the edges.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and shorts who is walking in the middle of the road, away from the ego car. This pedestrian poses a collision risk in the center of the lane, so the driver should slow down to maintain safety and avoid hitting them."}
{"id": "train_05072", "split": "train", "clip_key": "2020-0131-135401_063549_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "063549"}, "frames": ["2020-0131-135401_063549_movie_t-3.jpg", "2020-0131-135401_063549_movie_t-2.jpg", "2020-0131-135401_063549_movie_t-1.jpg", "2020-0131-135401_063549_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two same-direction lanes runs between apartment blocks; the pavement is dry and smooth, and traffic builds into a slow queue ahead. A white van directly ahead in the ego lane slows for a red traffic light, constraining the ego vehicle's pace. In the adjacent right lane, a dump truck and other heavy trucks creep forward in a queue, limiting space and blocking a rightward merge. Farther ahead, more cars wait near an elevated roadway. Red-and-white construction barriers line the left curb, narrowing the shoulder but leaving the lane clear.", "hazard_reasoning": "There is a white van slowing in front of the ego car, in the ego lane, because of a red traffic light. The van's deceleration poses a risk of a rear-end collision, so you must stop to maintain a safe following distance under this situation."}
{"id": "train_05073", "split": "train", "clip_key": "2020-0214-145407_037408_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "037408"}, "frames": ["2020-0214-145407_037408_movie_t-3.jpg", "2020-0214-145407_037408_movie_t-2.jpg", "2020-0214-145407_037408_movie_t-1.jpg", "2020-0214-145407_037408_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated single-lane roadway curves gently right, bounded by guardrails and construction fencing; pavement looks smooth and traffic is light with no oncoming lanes visible. A white box truck directly ahead in the ego lane slows with its brake lights on, constraining the ego-car's pace, matching the note that a white truck is slowing in front. Temporary work-zone barriers along the left narrow the corridor while an overhead structure lines the right.", "hazard_reasoning": "There's a white truck slowing down in front of the ego-car, in the ego-lane. The truck's deceleration ahead reduces the gap to the ego-vehicle, so the driver should slow down to maintain a safe following distance and avoid collision."}
{"id": "train_05074", "split": "train", "clip_key": "2020-0204-150838_015165_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "015165"}, "frames": ["2020-0204-150838_015165_movie_t-3.jpg", "2020-0204-150838_015165_movie_t-2.jpg", "2020-0204-150838_015165_movie_t-1.jpg", "2020-0204-150838_015165_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the black sedan merging", "environment_perception": "An urban divided arterial with three same-direction lanes runs alongside offices, with a planted median on the right separating oncoming traffic; the pavement looks smooth and traffic moves at a moderate, steady pace. Ahead in the ego lane, a black sedan taxi shifts left across the dashed line into the left-hand lane, moving out of the ego's path as described. A small white van directly ahead in the center lane travels steadily and sets the ego vehicle's speed. To the right ahead, a white SUV continues straight in the adjacent lane at a similar pace without interacting. Overhead gantry signs provide lane direction guidance.", "hazard_reasoning": "There is a black sedan that is changing lanes, from the ego-car lane, to the left-hand lane. The sedan's merging could cut across the ego-vehicle's path, so the driver should be aware of the black sedan merging to adjust speed and avoid a collision."}
{"id": "train_05075", "split": "train", "clip_key": "2020-0129-105040_006741_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "006741"}, "frames": ["2020-0129-105040_006741_movie_t-3.jpg", "2020-0129-105040_006741_movie_t-2.jpg", "2020-0129-105040_006741_movie_t-1.jpg", "2020-0129-105040_006741_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with at least two same-direction lanes runs between tall buildings, with a metal guardrail along the curb on the right and smooth pavement; traffic is heavy and currently stopped. Directly ahead in the ego lane, a silver box truck is stopped because of congestion ahead, fully blocking the path. To the left, a small white delivery van is halted alongside in the adjacent lane, reducing space for a lane change. Farther ahead in that lane, a silver minivan waits in the queue. No-parking signs appear on a pole to the left, and an overhead gantry spans the road.", "hazard_reasoning": "There is a silver truck stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver must stop to avoid a collision with the halted truck caused by the congested traffic."}
{"id": "train_05076", "split": "train", "clip_key": "titan_clip_557_000390_movie", "source": {"subset": "titan", "scenario": "clip_557", "frame": "000390"}, "frames": ["titan_clip_557_000390_movie_t-3.jpg", "titan_clip_557_000390_movie_t-2.jpg", "titan_clip_557_000390_movie_t-1.jpg", "titan_clip_557_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "A narrow urban commercial street with smooth pavement lacks a centerline or sidewalks, functioning as a two-way single lane with very light vehicle traffic. A pedestrian carrying a bag walks ahead along the left side of the roadway in the same direction, occupying the travel path because there is no sidewalk and constraining the ego car's pace. Farther ahead, another pedestrian moves toward the ego near the center and shifts slightly right to pass, briefly narrowing the available space. Storefronts line both sides and a parked bicycle and signs sit close to the edge, but they remain outside the lane.", "hazard_reasoning": "There is a tall pedestrian carrying a bag, wearing a blue t-shirt and gray pants, walking on the left side of the road towards the ego car because there is no sidewalk. The pedestrian's path directly intersects the vehicle's lane, so the driver should manoeuvre carefully around them to avoid a collision."}
{"id": "train_05077", "split": "train", "clip_key": "2020-0214-145407_022607_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "022607"}, "frames": ["2020-0214-145407_022607_movie_t-3.jpg", "2020-0214-145407_022607_movie_t-2.jpg", "2020-0214-145407_022607_movie_t-1.jpg", "2020-0214-145407_022607_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban three-lane arterial with separated carriageways and smooth pavement carries light traffic. A brown dump truck directly ahead in the ego lane is stopped, blocking the path and constraining the ego vehicle's pace. A white van is parked on the far right by the curb, remaining clear of the travel lanes. A speed-limit sign stands on the left roadside, and metal rails line the left edge.", "hazard_reasoning": "There is a brown truck stopped in front of the ego car. The driver needs to stop to avoid a collision with the stationary truck ahead."}
{"id": "train_05078", "split": "train", "clip_key": "2020-0218-103119_024306_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "024306"}, "frames": ["2020-0218-103119_024306_movie_t-3.jpg", "2020-0218-103119_024306_movie_t-2.jpg", "2020-0218-103119_024306_movie_t-1.jpg", "2020-0218-103119_024306_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with the truck", "environment_perception": "An urban multi-lane road with smooth pavement and a narrow line of orange bollards forming a median; overall traffic is light and moves freely in the right lanes while the left lane is impeded. Directly ahead in the ego lane, a white box truck is stopped and blocks the path, constraining the ego car's pace. In the adjacent lane to the right, a few cars continue straight past the obstruction, relevant as they occupy the space needed for a lane change. On the left sidewalk, a pedestrian walks along the storefronts and stays clear of the roadway. A painted bicycle lane and roadside work barricades line the curb.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane. Driver should stop to avoid colliding with the truck under this situation."}
{"id": "train_05079", "split": "train", "clip_key": "2020-0214-102601_022838_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "022838"}, "frames": ["2020-0214-102601_022838_movie_t-3.jpg", "2020-0214-102601_022838_movie_t-2.jpg", "2020-0214-102601_022838_movie_t-1.jpg", "2020-0214-102601_022838_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection with smooth pavement and clear markings; traffic is moderate and currently queued at a red light. A dark-gray minivan is stopped directly ahead in the ego lane because the red signal holds the line, constraining the ego vehicle. In the adjacent lane on the left, a black taxi waits level with the ego car at the stop line. Slightly ahead to the left, a scooter creeps toward the crosswalk between lanes and may move into the space ahead once the light changes. Cross traffic moves through the intersection in front of the queue. Overhead signals show red for the ego direction, and a roadside orange board on the right indicates something 50 m ahead.", "hazard_reasoning": "There is a dark-gray minivan stopped in front of the ego car in the ego lane, because of the red traffic light ahead. The driver must stop to maintain a safe distance and obey the signal to avoid a rear-end collision."}
{"id": "train_05080", "split": "train", "clip_key": "titan_clip_342_000480_movie", "source": {"subset": "titan", "scenario": "clip_342", "frame": "000480"}, "frames": ["titan_clip_342_000480_movie_t-3.jpg", "titan_clip_342_000480_movie_t-2.jpg", "titan_clip_342_000480_movie_t-1.jpg", "titan_clip_342_000480_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "A narrow urban shopping street has a single undivided lane paved with interlocking bricks, no centerline, and light vehicle flow as the ego-vehicle moves slowly among pedestrians. A small covered truck is stopped ahead near the right curb in the ego lane, narrowing the passage and constraining speed. On the right side of the road, a man wearing a white shirt and black pants carries a handbag and walks toward the left, potentially stepping into the ego lane. Another man in a blue shirt walks away along the right edge by the storefronts, close to the vehicle's path. Additional pedestrians proceed along the left side farther ahead. Store displays and signboards encroach slightly into the roadway.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, carrying a handbag, and walking to the left side, on the right side of the road. This pedestrian is crossing ahead and may enter the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_05081", "split": "train", "clip_key": "2020-0228-150133_040913_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "040913"}, "frames": ["2020-0228-150133_040913_movie_t-3.jpg", "2020-0228-150133_040913_movie_t-2.jpg", "2020-0228-150133_040913_movie_t-1.jpg", "2020-0228-150133_040913_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction and double solid center lines has dry, smooth pavement and generally steady, moderate traffic. A black sedan directly ahead in the ego lane slows, constraining the ego vehicle's pace. To the right, oncoming traffic in the opposing lanes, including a motorcycle and a van, moves straight and remains separated by the center lines. Farther ahead, a few same-direction vehicles continue at a steady speed with clear gaps, and no unusual signs or hazards are visible.", "hazard_reasoning": "There's a black sedan slowing in front of the ego car in the ego lane. The driver should slow down to maintain a safe following distance and avoid colliding with the slowing vehicle."}
{"id": "train_05082", "split": "train", "clip_key": "2020-0217-110854_006576_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-110854_006576_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-110854_006576_movie_t-3_augB1.jpg", "2020-0217-110854_006576_movie_t-2_augB1.jpg", "2020-0217-110854_006576_movie_t-1_augB1.jpg", "2020-0217-110854_006576_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street with no median and smooth asphalt runs between buildings; traffic appears light and slow due to roadside loading. Ahead in the ego lane, a cyclist rides in the middle of the road moving away from the camera and effectively sets the car's pace. On the left just ahead, a flatbed truck is stopped for deliveries with stacks of boxes and a worker beside it, narrowing the lane and reducing clearance. A white van is stopped at the curb behind the loading area. On the right sidewalk, a pedestrian walks forward parallel to traffic while remaining off the roadway.", "hazard_reasoning": "There is a cyclist wearing a blue shirt, cycling in the middle of the road, away from the ego car. The cyclist's position in the lane could cause unexpected movements, so the driver should slow down to maintain a safe distance and avoid a collision under this situation."}
{"id": "train_05083", "split": "train", "clip_key": "titan_clip_675_000108_movie", "source": {"subset": "titan", "scenario": "clip_675", "frame": "000108"}, "frames": ["titan_clip_675_000108_movie_t-3.jpg", "titan_clip_675_000108_movie_t-2.jpg", "titan_clip_675_000108_movie_t-1.jpg", "titan_clip_675_000108_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the minivan", "environment_perception": "An urban residential street with a narrow two-way carriageway lacking a centerline or median has smooth pavement and light traffic. Ahead in the ego lane, a silver minivan is parked along the left curb, stationary and partially intruding into the travel lane, which constrains the ego vehicle's path. A convex safety mirror stands on the right at the corner, and several bicycles are parked on the right sidewalk.", "hazard_reasoning": "There's a silver minivan parked on the left side of the road, in the ego-car lane. Because it blocks the driving lane, the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_05084", "split": "train", "clip_key": "2020-0210-155354_032997_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "032997"}, "frames": ["2020-0210-155354_032997_movie_t-3.jpg", "2020-0210-155354_032997_movie_t-2.jpg", "2020-0210-155354_032997_movie_t-1.jpg", "2020-0210-155354_032997_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with two same-direction lanes is shown; the ego vehicle travels in the left lane on smooth dry asphalt, and traffic is moderate, bunching into a slow-moving queue ahead. A dark hatchback directly ahead in the ego lane rolls slowly and then brakes, constraining our pace. In the adjacent right same-direction lane, a blue sedan draws level and edges forward, potentially moving ahead of us. Farther ahead in the right lane, a white van and a small flatbed truck queue tightly and creep along, contributing to the slowdown. Along the left curb near the camera, a large white truck stands close to the lane, narrowing lateral space.", "hazard_reasoning": "There is a maroon minivan speeding up in the ego lane, because of traffic congestion ahead. The minivan's rapid acceleration suggests potential stop-and-go traffic, so the driver should follow the vehicle ahead to maintain a safe distance."}
{"id": "train_05085", "split": "train", "clip_key": "2020-0203-114632_005546_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005546"}, "frames": ["2020-0203-114632_005546_movie_t-3.jpg", "2020-0203-114632_005546_movie_t-2.jpg", "2020-0203-114632_005546_movie_t-1.jpg", "2020-0203-114632_005546_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around white truck", "environment_perception": "An urban two-way road with one lane each way curves left, divided by double yellow lines; the dry pavement is clear, but the left shoulder hosts a coned work zone with a large crane truck that narrows the ego lane. On the right in the opposing direction, a city bus stands at the curb. Farther ahead in the right oncoming lane, a white truck approaches the ego car as the ego continues in its lane after passing the roadside obstruction.", "hazard_reasoning": "There is a white truck driving toward the ego car, in the right lane, because the ego car is in its lane after navigating around another obstacle. The driver should carefully manoeuvre around the approaching vehicle to avoid a collision while returning to the correct lane."}
{"id": "train_05086", "split": "train", "clip_key": "2020-0204-150838_048949_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "048949"}, "frames": ["2020-0204-150838_048949_movie_t-3.jpg", "2020-0204-150838_048949_movie_t-2.jpg", "2020-0204-150838_048949_movie_t-1.jpg", "2020-0204-150838_048949_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of the hatchback's lane change", "environment_perception": "An urban two-lane road with noise barriers curves right, the surface is smooth, and traffic moves at a moderate pace with several vehicles ahead. A silver hatchback directly ahead shifts from the ego lane to the right lane and pulls away, opening space in front of the ego vehicle. A small white box truck slightly ahead in the left lane continues straight at a steady speed, remaining in the ego lane and setting the pace. Farther ahead, a group of large trucks proceeds slowly in both lanes, forming the main flow the ego approaches. Overhead gantries and railings line the route, and no unusual hazards are visible.", "hazard_reasoning": "There is a silver hatchback changing lanes, from the ego lane to the right lane, and is driving away from the ego car. The driver should be aware of this lane change as it may impact the ego-vehicle's intended path."}
{"id": "train_05087", "split": "train", "clip_key": "2020-0217-144444_006391_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "006391"}, "frames": ["2020-0217-144444_006391_movie_t-3.jpg", "2020-0217-144444_006391_movie_t-2.jpg", "2020-0217-144444_006391_movie_t-1.jpg", "2020-0217-144444_006391_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multilane road with smooth pavement rises toward a signalized intersection, and traffic becomes moderate with a short queue. The ego vehicle travels in the leftmost lane. Ahead in the ego lane, a blue hatchback is stopped for the red signal, constraining the ego's approach. To the right, several white vans and a flatbed truck in the adjacent lanes slow and stop in a parallel queue toward the intersection. On the left sidewalk, a pedestrian walks along the railing and remains outside the roadway. The overhead traffic light ahead shows red.", "hazard_reasoning": "There is a blue hatchback stopped ahead in the ego lane, because of red traffic lights. The driver should slow down to avoid a collision with the stopped vehicle at the red light."}
{"id": "train_05088", "split": "train", "clip_key": "titan_clip_1100_000258_movie", "source": {"subset": "titan", "scenario": "clip_1100", "frame": "000258"}, "frames": ["titan_clip_1100_000258_movie_t-3.jpg", "titan_clip_1100_000258_movie_t-2.jpg", "titan_clip_1100_000258_movie_t-1.jpg", "titan_clip_1100_000258_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban shopping arcade street is shown with a very narrow single shared lane, no divider or markings, and tidy brick pavement; movement consists mainly of slow pedestrian flow with no vehicles visible. On the right near the ego path, a pedestrian wearing a blue shirt and black pants walks toward the vehicle along the edge and may step into the lane. On the left close by, a striped-shirt pedestrian walks diagonally toward the center, potentially crossing in front. Farther ahead in the middle, a small group of people continues away down the street, occupying the lane and constraining progress. Shopfront signs and sandwich boards protrude into the roadway, and a pair of orange cones stands by a vending machine on the left.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, walking on the right side of the road, towards the ego car. The driver should manoeuvre carefully around the pedestrian to prevent a collision."}
{"id": "train_05089", "split": "train", "clip_key": "titan_clip_71_000516_movie", "source": {"subset": "titan", "scenario": "clip_71", "frame": "000516"}, "frames": ["titan_clip_71_000516_movie_t-3.jpg", "titan_clip_71_000516_movie_t-2.jpg", "titan_clip_71_000516_movie_t-1.jpg", "titan_clip_71_000516_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrian", "environment_perception": "An urban two-way road with multiple lanes and no median appears at a zebra crosswalk by an intersection; the pavement looks smooth and traffic is light with several vehicles stopped at the curbs. A pedestrian wearing a striped shirt, blue shorts, a cap, and carrying a handbag crosses the crosswalk from left to right directly ahead, steadily moving across the ego lane and causing the ego vehicle to wait. On the left curb near the intersection, a white truck stands with traffic cones beside it, partially occluding the corner. Across to the right beyond the crosswalk, a black van is stopped along the curb. Farther ahead, a side street shows construction cones.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt, blue shorts, a cap, and carrying a handbag, crossing the street at a pedestrian crosswalk, from the left side to the right side. The driver must stop because the pedestrian is moving into the vehicle's path at the marked crossing."}
{"id": "train_05090", "split": "train", "clip_key": "titan_clip_1219_000222_movie", "source": {"subset": "titan", "scenario": "clip_1219", "frame": "000222"}, "frames": ["titan_clip_1219_000222_movie_t-3.jpg", "titan_clip_1219_000222_movie_t-2.jpg", "titan_clip_1219_000222_movie_t-1.jpg", "titan_clip_1219_000222_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way backstreet with one narrow lane each direction has no median and dry, smooth pavement; traffic is light with no moving vehicles near the ego. A black van is parked at the right curb near a side junction, encroaching slightly into the oncoming side but not into the ego lane. No other vehicles or pedestrians are visible ahead, and the opposing lane stays clear. A blue pedestrian-bicycle sign stands on the left sidewalk.", "hazard_reasoning": "No caption provided. There are no immediate hazards detected, so the driver can continue with normal vigilance."}
{"id": "train_05091", "split": "train", "clip_key": "2020-0203-114632_005278_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005278"}, "frames": ["2020-0203-114632_005278_movie_t-3.jpg", "2020-0203-114632_005278_movie_t-2.jpg", "2020-0203-114632_005278_movie_t-1.jpg", "2020-0203-114632_005278_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately for construction worker", "environment_perception": "An urban two-way street with one narrow lane per direction and no median has smooth pavement but a temporary work zone ahead, so flow is intermittent. Ahead in the ego lane, a worker in a reflective jacket and helmet stands in the middle holding a traffic wand, directing vehicles around construction on the left and holding traffic as needed. In the oncoming lane, a small truck followed by a bus moves slowly past the narrowed section toward the worker, occupying the usable path and constraining the ego vehicle's progress. On the left, a work flatbed and equipment sit within cones, encroaching into the ego lane and narrowing the carriageway. A pedestrian waits on the right sidewalk near a bus stop.", "hazard_reasoning": "There is a person wearing a reflective jacket and a helmet, holding a traffic wand, and standing in the middle of the road, because of construction work on the left. The driver must stop to avoid colliding with the worker and comply with the temporary traffic control."}
{"id": "train_05092", "split": "train", "clip_key": "2020-0129-105040_051375_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "051375"}, "frames": ["2020-0129-105040_051375_movie_t-3.jpg", "2020-0129-105040_051375_movie_t-2.jpg", "2020-0129-105040_051375_movie_t-1.jpg", "2020-0129-105040_051375_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane one-way road beneath elevated expressways has smooth red pavement, guardrails on both sides, and light-to-moderate traffic that is queued at a red signal. Ahead in the ego lane, a white hatchback is stopped for the red light, holding the ego car. To the right alongside the ego, a gray van in the adjacent lane slows and comes to a stop at the same light, potentially limiting a lane change. Farther ahead in the right lane, a dark minivan waits at the line. Overhead traffic lights show solid red.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. You should stop to avoid colliding with the stopped vehicle at the red signal."}
{"id": "train_05093", "split": "train", "clip_key": "2020-0225-102455_070067_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "070067"}, "frames": ["2020-0225-102455_070067_movie_t-3.jpg", "2020-0225-102455_070067_movie_t-2.jpg", "2020-0225-102455_070067_movie_t-1.jpg", "2020-0225-102455_070067_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial runs through high-rise buildings with dry pavement and a concrete barrier narrowing the right edge; traffic is moderate with a slow queue in the right lane. A white van directly ahead in the ego lane slows due to congestion ahead, setting the ego vehicle's pace. In the adjacent right lane, a black van and several cars crawl beside the barrier, leaving little space for a lane change. An overhead blue guide sign indicates Yokohama 25 km, Kawasaki 12 km, and Shinagawa 1 km straight ahead. No obstacles appear in the ego lane beyond the general narrowing created by the roadside barriers.", "hazard_reasoning": "There is a white van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of the vehicle ahead."}
{"id": "train_05094", "split": "train", "clip_key": "titan_clip_368_000060_movie", "source": {"subset": "titan", "scenario": "clip_368", "frame": "000060"}, "frames": ["titan_clip_368_000060_movie_t-3.jpg", "titan_clip_368_000060_movie_t-2.jpg", "titan_clip_368_000060_movie_t-1.jpg", "titan_clip_368_000060_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow two-way urban street without a median shows smooth pavement and light traffic, with no moving vehicles immediately ahead or oncoming. Midway in front of the ego car, a pedestrian wearing a black shirt and black pants pushes a cart while crossing from left to right across the lane, directly occupying the ego path and constraining its pace. Farther ahead on the right, a white delivery truck is stopped at the curb partly in the roadway, narrowing the lane and creating a mild obstruction.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants, pushing a cart, and crossing the street from left to right, in front of the ego car. Because they are entering the vehicle's path, the driver should yield to avoid colliding with the crossing pedestrian."}
{"id": "train_05095", "split": "train", "clip_key": "2020-0214-102601_020270_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "020270"}, "frames": ["2020-0214-102601_020270_movie_t-3.jpg", "2020-0214-102601_020270_movie_t-2.jpg", "2020-0214-102601_020270_movie_t-1.jpg", "2020-0214-102601_020270_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban scene shows a single-lane left-side roadway curving right with smooth pavement, a concrete median on the right and a fenced sidewalk on the left; traffic is light to moderate. A blue truck directly ahead in the ego lane is stopped at the intersection for a red traffic light and holds the ego vehicle in place. On the separated roadway to the right, a silver van travels in the same direction but remains divided by the median and does not affect the ego path. The signal ahead displays red. Construction activity and work vehicles sit beyond the median to the right but are isolated from the lane.", "hazard_reasoning": "There is a blue truck stopped in the ego lane because of a red traffic light. The driver should stop to avoid a collision with the halted truck at the red signal."}
{"id": "train_05096", "split": "train", "clip_key": "2020-0129-105040_092455_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "092455"}, "frames": ["2020-0129-105040_092455_movie_t-3.jpg", "2020-0129-105040_092455_movie_t-2.jpg", "2020-0129-105040_092455_movie_t-1.jpg", "2020-0129-105040_092455_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two same-direction lanes runs ahead, separated from oncoming traffic by a raised shrub-lined median; the pavement is smooth and traffic is moderate but queued at the junction. A small white truck directly ahead in the ego lane is stopped at the stop line because the overhead signal shows red, holding the ego vehicle. In the adjacent left lane a white sedan slightly ahead creeps forward toward the intersection in parallel without entering the ego lane. Beyond the median, a large truck travels through the junction in the opposite direction without interacting. Overhead traffic lights are clearly visible, and no hazards or work zones appear.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver must stop as the vehicle ahead is halted at the red signal, and failure to brake could result in a rear-end collision."}
{"id": "train_05097", "split": "train", "clip_key": "2020-0131-103016_020344_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "020344"}, "frames": ["2020-0131-103016_020344_movie_t-3.jpg", "2020-0131-103016_020344_movie_t-2.jpg", "2020-0131-103016_020344_movie_t-1.jpg", "2020-0131-103016_020344_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane intersection with smooth pavement and a small painted island is ahead, and traffic is light while the ego vehicle waits at a red light. Two men wearing black coats and carrying bags cross the near zebra crossing from the right, walking across the ego lane and determining the stop. A group of pedestrians stands on the left corner at the perpendicular crosswalk, some edging forward and may enter the lane during the crossing phase. The red signal overhead remains illuminated for the ego direction.", "hazard_reasoning": "There are two men carrying bags, wearing black coats, and crossing the street on a pedestrian crossing. The driver should stop immediately to avoid colliding with the pedestrians entering the roadway."}
{"id": "train_05098", "split": "train", "clip_key": "titan_clip_356_000318_movie", "source": {"subset": "titan", "scenario": "clip_356", "frame": "000318"}, "frames": ["titan_clip_356_000318_movie_t-3.jpg", "titan_clip_356_000318_movie_t-2.jpg", "titan_clip_356_000318_movie_t-1.jpg", "titan_clip_356_000318_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with a single narrow lane and no divider runs straight ahead; the pavement looks damp and vehicle traffic is light. The ego-vehicle proceeds along this segment. A white sedan is stopped along the left side ahead in the ego lane, partially blocking the path and constraining the ego-vehicle's pace. A pedestrian ahead slightly right of center walks away from the camera within the roadway, keeping near the right edge and reducing the usable lane. Another pedestrian on the right sidewalk stands near the curb and remains off the roadway. Bollards and a tree planter narrow the right margin.", "hazard_reasoning": "There is a white sedan stopped on the left side of the street, in the ego lane. You should carefully manoeuvre around the stopped sedan to maintain safe distance and avoid a collision."}
{"id": "train_05099", "split": "train", "clip_key": "titan_clip_771_000096_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_771_000096_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_771_000096_movie_t-3_augB1.jpg", "titan_clip_771_000096_movie_t-2_augB1.jpg", "titan_clip_771_000096_movie_t-1_augB1.jpg", "titan_clip_771_000096_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with no lane markings or median has smooth pavement and light vehicle flow but frequent pedestrian activity. Ahead in the center of the roadway, a pedestrian wearing black pants walks away from the ego car, occupying the travel path and constraining the pace. Farther ahead along the right edge, two pedestrians also walk away near the storefronts, close to the lane and potentially stepping into it. A white van is stopped on the left near the ego vehicle, encroaching into the roadway and tightening the passage, with additional parked vehicles lining the left side and further narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing black pants and walking in the middle of the road, away from the ego car. This pedestrian is in the vehicle's path and could unexpectedly change direction, so the driver should slow down to ensure safety."}
{"id": "train_05100", "split": "train", "clip_key": "titan_clip_396_000366_movie", "source": {"subset": "titan", "scenario": "clip_396", "frame": "000366"}, "frames": ["titan_clip_396_000366_movie_t-3.jpg", "titan_clip_396_000366_movie_t-2.jpg", "titan_clip_396_000366_movie_t-1.jpg", "titan_clip_396_000366_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single lane in the ego direction has no median and slightly worn asphalt, and traffic moves lightly at low speed. A white box truck ahead in the same lane proceeds slowly, constraining the ego vehicle's pace. Ahead slightly right, a pedestrian wearing a green shirt is crossing in the middle of the roadway toward the right side and may enter the ego lane. On the left foreground, a parked delivery truck protrudes into the lane while traffic cones along the curbs narrow the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a green shirt and crossing the street, in the middle of the road, to the right side. The pedestrian's presence on the roadway ahead poses a collision risk, so the driver should slow down to allow them to cross safely."}
{"id": "train_05101", "split": "train", "clip_key": "2020-0127-132751_104392_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "104392"}, "frames": ["2020-0127-132751_104392_movie_t-3.jpg", "2020-0127-132751_104392_movie_t-2.jpg", "2020-0127-132751_104392_movie_t-1.jpg", "2020-0127-132751_104392_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for the pedestrian crossing", "environment_perception": "An urban two-lane road with a solid yellow center line passes shops, the pavement is dry, and traffic is light but momentarily slows. A silver van ahead in the ego lane brakes and waits, constraining the ego vehicle's pace. A pedestrian wearing a brown coat and carrying a handbag crosses in front of the ego car from right to left, occupying the lane and prompting the halt. An oncoming car travels in the opposing lane to the right, continuing past within its lane.", "hazard_reasoning": "There is a pedestrian wearing a brown coat and carrying a handbag, crossing the street in front of the ego car, from the right side to the left side. The driver should stop to avoid colliding with the pedestrian who is crossing ahead."}
{"id": "train_05102", "split": "train", "clip_key": "titan_clip_873_000462_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_873_000462_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_873_000462_movie_t-3_augB1.jpg", "titan_clip_873_000462_movie_t-2_augB1.jpg", "titan_clip_873_000462_movie_t-1_augB1.jpg", "titan_clip_873_000462_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban, narrow two-way street with a single lane each direction and no median appears, the pavement smooth and vehicle traffic light with no moving cars nearby. A pedestrian in a blue shirt and gray pants walks toward the ego in the left side of the lane because a van is parked along the left curb, so the person edges into the ego path. Several other pedestrians queue along the left curb near storefronts, standing close to the roadway and slightly narrowing the lane ahead of the van. Farther ahead, a group of pedestrians crosses the zebra crossing, likely to control the ego car's pace as it approaches. A silver van is parked on the left and partially protrudes into the lane, acting as an obstacle.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and gray pants, walking on the left side of the road, toward the ego car, because of a van parked on the left side of the road. The pedestrian may step into the vehicle's path to avoid the parked van, so the driver should adjust their path accordingly to avoid a collision."}
{"id": "train_05103", "split": "train", "clip_key": "titan_clip_523_000264_movie", "source": {"subset": "titan", "scenario": "clip_523", "frame": "000264"}, "frames": ["titan_clip_523_000264_movie_t-3.jpg", "titan_clip_523_000264_movie_t-2.jpg", "titan_clip_523_000264_movie_t-1.jpg", "titan_clip_523_000264_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrians crossing", "environment_perception": "A narrow urban two-way street with no clear centerline approaches a small intersection; the pavement is dry and slightly worn, and traffic is light. Ahead in the same direction, a black van pauses by the left curb, constraining the available space. In the foreground, a woman with a parasol crosses from the left to the right across the ego lane and occupies the vehicle's path. On the right side of the intersection, two women with umbrellas are crossing toward the ego car and step into the roadway, which may bring them into the ego lane. A blue right-pointing one-way sign is posted on the corner building.", "hazard_reasoning": "There are two women crossing the street on the right side of the intersection, toward the ego car. The driver should yield to these pedestrians as they are crossing toward the vehicle's path."}
{"id": "train_05104", "split": "train", "clip_key": "titan_clip_655_000462_movie", "source": {"subset": "titan", "scenario": "clip_655", "frame": "000462"}, "frames": ["titan_clip_655_000462_movie_t-3.jpg", "titan_clip_655_000462_movie_t-2.jpg", "titan_clip_655_000462_movie_t-1.jpg", "titan_clip_655_000462_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian with caution", "environment_perception": "An urban shopping street with shops on both sides forms a narrow two-way road without a median or centerline, the pavement is smooth, and vehicle traffic is light. A white van approaches ahead near the middle of the roadway at low speed, reducing the available space in the lane. On the left edge, a pedestrian looking into a phone and carrying a handbag walks toward the ego vehicle and slightly encroaches into the lane, potentially entering its path. Nearby, a small group of pedestrians on the left also walks toward the ego along the painted shoulder and intermittently steps into the roadway, constraining the line. On the right, several pedestrians move along the storefronts away from the ego while keeping to the side.", "hazard_reasoning": "A pedestrian looking into a phone and carrying a handbag is walking on the left side of the road, toward the ego car. The driver should manoeuvre around the pedestrian with caution to prevent a collision."}
{"id": "train_05105", "split": "train", "clip_key": "2020-0212-102546_048637_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "048637"}, "frames": ["2020-0212-102546_048637_movie_t-3.jpg", "2020-0212-102546_048637_movie_t-2.jpg", "2020-0212-102546_048637_movie_t-1.jpg", "2020-0212-102546_048637_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes runs between mid-rise buildings, with a planted median on the right and smooth pavement; traffic appears light and steady. A silver van ahead in the ego lane pulls away from the camera, continuing through the junction as the traffic signal ahead shows green. Farther ahead, a white bus in the same direction proceeds through the intersection and loosely sets the pace. A pedestrian and a bicyclist stay on the left sidewalk behind railings and do not enter the roadway. No oncoming vehicles are visible beyond the median, and no obstacles or work zones appear.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car, because of a green traffic light. Following the van helps maintain a safe speed and ensures proper intersection crossing under the current signal."}
{"id": "train_05106", "split": "train", "clip_key": "titan_clip_1250_000360_movie", "source": {"subset": "titan", "scenario": "clip_1250", "frame": "000360"}, "frames": ["titan_clip_1250_000360_movie_t-3.jpg", "titan_clip_1250_000360_movie_t-2.jpg", "titan_clip_1250_000360_movie_t-1.jpg", "titan_clip_1250_000360_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow two-way urban side street with no centerline and worn, patchy asphalt runs between shopfronts; several trucks parked along the left narrow the roadway and motor traffic is light. Ahead in the middle of the road, a pedestrian in a white dress walks toward the ego vehicle, using the lane to pass the parked vehicle. At the right edge by a shuttered storefront, a man with a backpack stands near the curb, close to the travel path. Farther ahead near the trucks, a few pedestrians, including one carrying a white umbrella, move along and partly across the lane. A delivery truck on the left encroaches into the roadway and forms a significant obstacle.", "hazard_reasoning": "There is a pedestrian wearing a white dress and walking towards the ego car, in the middle of the road, because of the parked vehicle. The driver should carefully manoeuvre to avoid a collision with the pedestrian."}
{"id": "train_05107", "split": "train", "clip_key": "2020-0207-101955_120102_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "120102"}, "frames": ["2020-0207-101955_120102_movie_t-3.jpg", "2020-0207-101955_120102_movie_t-2.jpg", "2020-0207-101955_120102_movie_t-1.jpg", "2020-0207-101955_120102_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs under an elevated expressway, with no median visible and sound asphalt. Traffic is heavy and largely stopped in parallel queues. A blue sedan is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle stationary. Slightly farther ahead to the left, a tall white box truck is stopped and blocks the forward view while waiting in the line. Alongside in the left lane, a large silver freight truck creeps forward close to the ego car, limiting lateral space. In the right lane, a silver van just ahead also waits or inches forward beside the ego, matching the slow pace.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, because of traffic congestion ahead. The vehicle ahead may stop suddenly and reduce available stopping distance, so the driver must stop to avoid a collision."}
{"id": "train_05108", "split": "train", "clip_key": "2020-0210-155354_041278_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "041278"}, "frames": ["2020-0210-155354_041278_movie_t-3.jpg", "2020-0210-155354_041278_movie_t-2.jpg", "2020-0210-155354_041278_movie_t-1.jpg", "2020-0210-155354_041278_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two-way traffic and a hatched painted median stretches ahead; pavement is clean and dry and traffic is light. A gray van directly ahead in the ego lane drives away through the intersection at a steady pace, effectively setting the ego vehicle's speed. An oncoming white car in the opposite lanes to the right approaches the junction and continues straight, separated by the median and not affecting the ego path. A few pedestrians stay on the sidewalks near the shops and do not enter the road.", "hazard_reasoning": "There is a gray van driving in the ego lane away from the ego car. Stay aware because the van ahead might change speed unexpectedly."}
{"id": "train_05109", "split": "train", "clip_key": "titan_clip_1133_000396_movie", "source": {"subset": "titan", "scenario": "clip_1133", "frame": "000396"}, "frames": ["titan_clip_1133_000396_movie_t-3.jpg", "titan_clip_1133_000396_movie_t-2.jpg", "titan_clip_1133_000396_movie_t-1.jpg", "titan_clip_1133_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "An urban commercial street with trees and glass-fronted shops forms a single narrow lane with white edge lines, no median, and smooth pavement; traffic is light and there are no oncoming vehicles. On the right edge, a group of three pedestrians walks toward the ego vehicle close to the lane, creating tight clearance. Ahead near the left edge, a lone pedestrian moves along the roadway toward the car and could constrain its pace. Farther ahead near the center of the lane, a dark car appears stationary by the curb, reducing available space. No salient signals or posted speeds are visible, and the scene remains pedestrian-dominated throughout.", "hazard_reasoning": "There are a group of three pedestrians walking along the right side of the road, toward the ego car. The driver should be aware that these pedestrians may step into the vehicle's path unexpectedly and require attentive driving."}
{"id": "train_05110", "split": "train", "clip_key": "2020-0220-151845_005661_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "005661"}, "frames": ["2020-0220-151845_005661_movie_t-3.jpg", "2020-0220-151845_005661_movie_t-2.jpg", "2020-0220-151845_005661_movie_t-1.jpg", "2020-0220-151845_005661_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban side street with a single narrow lane curves gently right beside a mid-rise building and a fenced construction site on the left. The pavement is dry and smooth, and traffic is absent. No road users are visible near the ego-vehicle. A blue-and-red prohibition sign on the right indicates no parking or stopping, and another red circular sign with Japanese text stands by the fence. White guardrails line the right side of the curve, and there are no lane markings or a median.", "hazard_reasoning": "No immediate hazards are present; the roadway is clear and pedestrian activity is limited to the sidewalk, so the driver can continue normal operation."}
{"id": "train_05111", "split": "train", "clip_key": "titan_clip_1043_000114_movie", "source": {"subset": "titan", "scenario": "clip_1043", "frame": "000114"}, "frames": ["titan_clip_1043_000114_movie_t-3.jpg", "titan_clip_1043_000114_movie_t-2.jpg", "titan_clip_1043_000114_movie_t-1.jpg", "titan_clip_1043_000114_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban intersection shows a single-lane side street with a small raised island on the approach meeting a multi-lane arterial with no visible median; pavement is smooth and dry, and cross-street traffic is light to moderate. Several pedestrians ahead walk from right to left across the marked crosswalk directly over the ego lane, so the vehicle remains stopped. Cars on the arterial travel through the junction in both directions, continuing straight without turning toward the side street. The traffic signal above the approach displays red for the ego direction.", "hazard_reasoning": "There are no vehicles, obstacles, or pedestrians crossing the roadway, and visibility is clear, so no immediate hazards are detected."}
{"id": "train_05112", "split": "train", "clip_key": "2020-0226-140503_081140_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "081140"}, "frames": ["2020-0226-140503_081140_movie_t-3.jpg", "2020-0226-140503_081140_movie_t-2.jpg", "2020-0226-140503_081140_movie_t-1.jpg", "2020-0226-140503_081140_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes shows smooth pavement and heavy, mostly stopped traffic under overcast skies. A white hatchback is stopped directly ahead in the ego lane, holding the ego vehicle in the queue. A large box truck sits slightly ahead in the lane to the left, barely creeping with the jam and partly blocking the forward view. A white minivan alongside on the far left edges forward close to the lane line, limiting lateral space. Overhead traffic signals with lane-direction arrows are visible above the road in the distance as the queue inches forward.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because of the red light at the intersection. You should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_05113", "split": "train", "clip_key": "titan_clip_312_000300_movie", "source": {"subset": "titan", "scenario": "clip_312", "frame": "000300"}, "frames": ["titan_clip_312_000300_movie_t-3.jpg", "titan_clip_312_000300_movie_t-2.jpg", "titan_clip_312_000300_movie_t-1.jpg", "titan_clip_312_000300_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrians", "environment_perception": "An urban narrow two-way street with no centerline and patchy asphalt runs between buildings, with light traffic and many vehicles parked along both sides. Two pedestrians on the right walk toward the ego vehicle along the curb, including one wearing green pants and a yellow shirt, bringing them near the travel path. On the left, a worker beside a black van with its side door open unloads items at the edge of the lane, narrowing the roadway. Ahead in the same direction, a small white truck is stopped by the left curb while another vehicle farther ahead departs, slightly constraining progress. A low rolling cart near the van, an SUV parked in a right-side bay, and an orange cone add roadside obstacles.", "hazard_reasoning": "Two pedestrians wearing green pants and a yellow shirt are walking on the right side of the road, toward the ego car. The driver should carefully manoeuvre around them because they may step into the lane unexpectedly, presenting a collision risk."}
{"id": "train_05114", "split": "train", "clip_key": "titan_clip_844_000360_movie", "source": {"subset": "titan", "scenario": "clip_844", "frame": "000360"}, "frames": ["titan_clip_844_000360_movie_t-3.jpg", "titan_clip_844_000360_movie_t-2.jpg", "titan_clip_844_000360_movie_t-1.jpg", "titan_clip_844_000360_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban residential street without a centerline climbs gently uphill; it is a narrow two-way road with smooth pavement and light traffic. A pedestrian in a light shirt and blue jeans moves from the middle of the road toward the right to retrieve their dog, briefly walking in the ego lane before reaching the roadside. Far ahead, a cyclist proceeds slowly uphill near the center in the same direction, occupying the ego path. No oncoming vehicles are visible. A white diamond road marking is painted on the pavement, and a right-side guardrail and a high stone wall on the left border the roadway, with the hill crest ahead limiting forward visibility.", "hazard_reasoning": "There is a pedestrian with dark short hair, wearing blue jeans, and a light shirt walking to retrieve their dog in the middle of the road, walking towards the right side of the road. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_05115", "split": "train", "clip_key": "2020-0205-103411_064057_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "064057"}, "frames": ["2020-0205-103411_064057_movie_t-3.jpg", "2020-0205-103411_064057_movie_t-2.jpg", "2020-0205-103411_064057_movie_t-1.jpg", "2020-0205-103411_064057_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban arterial with three same-direction lanes runs toward a signalized intersection, with a planted median on the right separating oncoming lanes; the asphalt is clean and traffic in this direction is queued. A gray hatchback directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. Ahead in the right lane, a box truck slows to a stop near the intersection, slightly farther forward than the hatchback. In the left adjacent lane, a silver van creeps forward just ahead and alongside in the queue.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car, because of a red traffic light. The driver must stop to avoid colliding with the halted hatchback under the red signal."}
{"id": "train_05116", "split": "train", "clip_key": "2020-0129-105040_044689_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "044689"}, "frames": ["2020-0129-105040_044689_movie_t-3.jpg", "2020-0129-105040_044689_movie_t-2.jpg", "2020-0129-105040_044689_movie_t-1.jpg", "2020-0129-105040_044689_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multilane arterial runs beneath an elevated structure, with dry pavement and a barrier separating oncoming lanes to the right; traffic in the ego's direction is heavy and largely stationary at an intersection. A gray van directly ahead in the ego lane is stopped at the red light and blocks the ego vehicle's path. To the left, a large truck alongside waits in its lane, restricting any lateral movement. Farther ahead in the adjacent left lane, a white van also queues and remains stopped near the junction. The traffic signal ahead is red.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to prevent a collision with the halted van at the red light."}
{"id": "train_05117", "split": "train", "clip_key": "titan_clip_295_000594_movie", "source": {"subset": "titan", "scenario": "clip_295", "frame": "000594"}, "frames": ["titan_clip_295_000594_movie_t-3.jpg", "titan_clip_295_000594_movie_t-2.jpg", "titan_clip_295_000594_movie_t-1.jpg", "titan_clip_295_000594_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban residential street with a single narrow two-way lane and no median stretches ahead, the asphalt smooth and traffic very light. The view is slightly backlit as the road runs straight between apartments and trees, with no moving vehicles or oncoming traffic visible. On the left edge near the camera, a pedestrian wearing a white T-shirt walks away from the ego car along the verge, staying outside the main travel line. Farther ahead near the center of the lane, another pedestrian also walks away, sharing the roadway and relevant to the vehicle's path. A convex safety mirror stands on the right by a side entrance. Parked vehicles line parts of the roadside, including one on the right ahead, but they remain clear of the lane.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt and walking on the left side of the road, away from the ego car. The driver should be aware of this pedestrian to anticipate any possible crossing into the vehicle's path."}
{"id": "train_05118", "split": "train", "clip_key": "titan_clip_418_000270_movie", "source": {"subset": "titan", "scenario": "clip_418", "frame": "000270"}, "frames": ["titan_clip_418_000270_movie_t-3.jpg", "titan_clip_418_000270_movie_t-2.jpg", "titan_clip_418_000270_movie_t-1.jpg", "titan_clip_418_000270_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with interlocking pavers and no centerline runs between mid-rise buildings; the single lane bends slightly right, the surface is clean, and traffic is light with only parked vehicles on the left narrowing the way. On the left near a parked van, a pedestrian in a blue T-shirt and black pants walks toward the ego-vehicle along the edge, heading to cross the intersection up ahead on the left, and may step into the lane. Slightly ahead on the left, another pedestrian in a white shirt walks away along the curb, remaining clear of the path. Farther ahead by the trees on the right, a couple of pedestrians continue along the sidewalk without interaction. A blue parking sign stands on the left, and cones and bollards further constrict the left margin.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt and black pants, walking on the left side of the road towards the ego-car because they are crossing the intersection up ahead on the left. The driver should slow down as the pedestrian is crossing the intersection on the vehicle's path."}
{"id": "train_05119", "split": "train", "clip_key": "titan_clip_234_000516_movie", "source": {"subset": "titan", "scenario": "clip_234", "frame": "000516"}, "frames": ["titan_clip_234_000516_movie_t-3.jpg", "titan_clip_234_000516_movie_t-2.jpg", "titan_clip_234_000516_movie_t-1.jpg", "titan_clip_234_000516_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "A narrow urban street with a single undivided lane and brick paving runs between tall buildings; the surface looks good and traffic is light with no moving vehicles visible. A white truck is parked ahead along the left side of the road, encroaching on the travel lane and narrowing the path. On the right, a pedestrian walks toward the camera along the curb beside shopfronts, parallel to the lane. Farther ahead near the truck, another pedestrian stands at the left edge of the roadway beside the vehicle.", "hazard_reasoning": "There is a white truck parked on the left side of the road. This parked truck partially obstructs the view of oncoming traffic and pedestrians, so the driver should carefully manoeuvre around it."}
{"id": "train_05120", "split": "train", "clip_key": "2020-0129-144857_057528_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "057528"}, "frames": ["2020-0129-144857_057528_movie_t-3.jpg", "2020-0129-144857_057528_movie_t-2.jpg", "2020-0129-144857_057528_movie_t-1.jpg", "2020-0129-144857_057528_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction and a guardrail median has dry, smooth pavement and moderate, steady flow. A white box truck ahead in the ego lane drives straight and gradually pulls away, effectively setting the ego car's pace. To the right beyond the median, oncoming cars and trucks move slowly in their lanes and remain separated from the ego path. An overhead pedestrian bridge spans the road, and a blue guide sign for Route 122 is visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05121", "split": "train", "clip_key": "2020-0129-144857_065835_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "065835"}, "frames": ["2020-0129-144857_065835_movie_t-3.jpg", "2020-0129-144857_065835_movie_t-2.jpg", "2020-0129-144857_065835_movie_t-1.jpg", "2020-0129-144857_065835_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-end collision.", "environment_perception": "An urban elevated road with two same-direction lanes runs between a sound barrier on the left and a concrete guardrail on the right; the dry pavement carries heavy, stop-and-go traffic through a rightward curve. Directly ahead, a silver sedan in the ego lane is stopped because of traffic congestion ahead, holding the ego vehicle. To the left, a large blue flatbed truck sits alongside in the adjacent lane, barely moving and limiting lateral space. Farther ahead, several small trucks and vans in both lanes creep forward in a tight queue toward the curve. On the right, a white kei van in the neighboring lane edges ahead near the guardrail at the same slow pace.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision due to the halted vehicle ahead."}
{"id": "train_05122", "split": "train", "clip_key": "titan_clip_1217_000396_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1217_000396_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1217_000396_movie_t-3_augB1.jpg", "titan_clip_1217_000396_movie_t-2_augB1.jpg", "titan_clip_1217_000396_movie_t-1_augB1.jpg", "titan_clip_1217_000396_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street in Japan is two-way without a centerline, the asphalt looks smooth with patches, and traffic is light with no oncoming vehicles visible. Ahead in the middle of the road, a pedestrian in a blue shirt and blue pants walks away from the ego car to pass a white car parked on the left, temporarily occupying the ego path. The white car remains stopped along the curb and protrudes slightly into the narrow lane, constraining room to proceed. At the near left edge, another pedestrian holding bags waits by the curb without stepping into the roadway. Orange cones and stacked materials sit at a right-side entrance but stay off the lane.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and blue pants, and walking in the middle of the road, away from the ego car, because of the parked vehicle. The pedestrian is walking in the roadway to bypass the parked vehicle, posing a potential collision risk; slow down to maintain a safe distance and avoid an accident."}
{"id": "train_05123", "split": "train", "clip_key": "2020-0210-101957_024102_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "024102"}, "frames": ["2020-0210-101957_024102_movie_t-3.jpg", "2020-0210-101957_024102_movie_t-2.jpg", "2020-0210-101957_024102_movie_t-1.jpg", "2020-0210-101957_024102_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with at least two lanes in the ego direction runs between hedges and mid-rise buildings; the pavement is smooth and traffic is heavy and mostly stopped. A black motorcycle directly ahead in the ego lane is stationary at close range because congestion blocks the lane. Farther ahead in the same lane, a silver van waits in the queue, constraining the ego vehicle's progress. In the adjacent right lane, a small flatbed truck slightly ahead creeps forward with the jam, moving parallel to the ego lane and shaping available gaps.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted motorcycle due to the slowing traffic."}
{"id": "train_05124", "split": "train", "clip_key": "titan_clip_697_000372_movie", "source": {"subset": "titan", "scenario": "clip_697", "frame": "000372"}, "frames": ["titan_clip_697_000372_movie_t-3.jpg", "titan_clip_697_000372_movie_t-2.jpg", "titan_clip_697_000372_movie_t-1.jpg", "titan_clip_697_000372_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing", "environment_perception": "An urban backstreet with a single narrow lane and no median runs between close storefronts; the pavement is smooth and dry and traffic is light. A pedestrian in a gray shirt crosses mid-block from the left side to the right ahead, moving through the ego lane and directly in front of the path. Two other pedestrians farther ahead remain in the roadway walking away near the center, constraining the approach as they occupy the lane. No traffic signals or posted speeds are clearly visible, and closely spaced poles and building edges line the kerbs without additional obstacles.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, crossing the street in the middle of the road, from the left side to the right side. The driver should be aware of this mid-road crossing pedestrian to avoid a sudden conflict and potential collision."}
{"id": "train_05125", "split": "train", "clip_key": "2020-0227-104226_043122_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "043122"}, "frames": ["2020-0227-104226_043122_movie_t-3.jpg", "2020-0227-104226_043122_movie_t-2.jpg", "2020-0227-104226_043122_movie_t-1.jpg", "2020-0227-104226_043122_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes per direction is divided by a single yellow center line, the pavement is smooth, and traffic is light to moderate. Ahead in the ego lane, a white hatchback slows because a small white truck in front is also slowing and constrains the pace. In the left curb lane, a white van travels slowly alongside, limiting space to change lanes. Oncoming traffic moves in its right-side lanes with clear separation. Large 40 markings on the pavement indicate a 40 zone, and metal railings line both sides of the roadway.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane because of the truck slowing ahead on the road. The driver should slow down to maintain a safe distance and avoid a potential rear-end collision with these decelerating vehicles."}
{"id": "train_05126", "split": "train", "clip_key": "titan_clip_261_000498_movie", "source": {"subset": "titan", "scenario": "clip_261", "frame": "000498"}, "frames": ["titan_clip_261_000498_movie_t-3.jpg", "titan_clip_261_000498_movie_t-2.jpg", "titan_clip_261_000498_movie_t-1.jpg", "titan_clip_261_000498_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "A narrow urban two-way street with a single lane in each direction and no median stretches ahead on smooth pavement, and overall traffic is light with no moving oncoming vehicles visible. Near the left foreground, a pedestrian walks from the left edge across the lane toward the right, directly in the camera vehicle's path. Ahead, a gray van is parked along the left curb, partially intruding into the lane and narrowing the passage. Farther back on the left, a white car remains parked off the roadway. A convex traffic mirror hangs on the right storefront corner.", "hazard_reasoning": "There is a gray van parked on the left side of the road. This parked vehicle narrows the roadway, requiring the driver to manoeuvre around it to avoid a collision."}
{"id": "train_05127", "split": "train", "clip_key": "2020-0221-115122_016391_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "016391"}, "frames": ["2020-0221-115122_016391_movie_t-3.jpg", "2020-0221-115122_016391_movie_t-2.jpg", "2020-0221-115122_016391_movie_t-1.jpg", "2020-0221-115122_016391_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban two-lane road runs beneath an elevated expressway, with lanes in the same direction and a painted gore and low curb along the left; the asphalt is dry and traffic is slow. A silver van directly ahead in the ego lane is stopped, holding the ego car. To the right, a dark compact car alongside and slightly ahead in the adjacent lane creeps forward, limiting an immediate lane change. Farther ahead in the right lane, a white van also waits in the queue, keeping the flow sluggish. Concrete pillars and shadows from the structure create partial sightline occlusion.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane. Stop immediately to avoid a potential rear-end collision."}
{"id": "train_05128", "split": "train", "clip_key": "2020-0207-101955_017256_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "017256"}, "frames": ["2020-0207-101955_017256_movie_t-3.jpg", "2020-0207-101955_017256_movie_t-2.jpg", "2020-0207-101955_017256_movie_t-1.jpg", "2020-0207-101955_017256_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial comes to a broad intersection, with the ego car in the left of two same-direction lanes; a painted center line separates oncoming traffic and the pavement looks smooth amid moderate flow. Ahead in the ego lane, a small white truck with a green tarp drives away at a steady pace and effectively sets the gap to the intersection. In the adjacent right lane, a red SUV slightly ahead continues straight alongside without encroaching. Farther ahead in the same right lane, a white van proceeds straight and keeps its lane, moving past the crosswalk while maintaining distance from the truck.", "hazard_reasoning": "There is a white truck with a green tarp driving in the ego lane away from the ego car. The truck may obscure pedestrians waiting or entering the crosswalk, increasing the risk of a pedestrian suddenly appearing in front of you, so you should be cautious around it."}
{"id": "train_05129", "split": "train", "clip_key": "titan_clip_659_000510_movie", "source": {"subset": "titan", "scenario": "clip_659", "frame": "000510"}, "frames": ["titan_clip_659_000510_movie_t-3.jpg", "titan_clip_659_000510_movie_t-2.jpg", "titan_clip_659_000510_movie_t-1.jpg", "titan_clip_659_000510_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban two-way street with no centerline and smooth pavement shows light traffic as the ego vehicle proceeds in the left lane toward a cross street. Ahead on the left curb, a dark box truck stands partly in the lane while unloading, with a dolly and stacked crates at its rear that narrow the passage and constrain the ego vehicle to pass to its right. Beside it on the left, a male pedestrian wearing a black shirt with white writing and brown pants unloads the truck and stands close to the roadway, so he may enter the ego lane. On the right sidewalk, another pedestrian waits by a building entrance without moving into the road. A white car sits recessed on the right, and no oncoming vehicles are visible.", "hazard_reasoning": "There is a male pedestrian, wearing a black shirt with white writing and brown pants, unloaded a truck, on the left side of the road. The pedestrian unloading the truck may step into the lane unexpectedly and is hidden by the parked vehicle, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_05130", "split": "train", "clip_key": "2020-0203-154554_043880_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "043880"}, "frames": ["2020-0203-154554_043880_movie_t-3.jpg", "2020-0203-154554_043880_movie_t-2.jpg", "2020-0203-154554_043880_movie_t-1.jpg", "2020-0203-154554_043880_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided roadway runs under an elevated structure with two same-direction lanes and a right-side merge; the pavement is dry and well marked, and traffic becomes slow and congested ahead. A gray sedan directly in front in the ego lane slows because a queue forms ahead, constraining the ego vehicle's pace. Farther ahead, a group of cars in both lanes bunches and brakes under the covered section, creating stop-and-go movement that blocks the path. On a separated parallel lane to the left, a white box truck continues independently of the ego lane and does not interact. Overhead guide signs and a roadside speed-limit sign are visible.", "hazard_reasoning": "There is a gray sedan slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should slow down to maintain a safe following distance due to the reduced speed of the vehicle ahead."}
{"id": "train_05131", "split": "train", "clip_key": "2020-0210-101957_078140_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "078140"}, "frames": ["2020-0210-101957_078140_movie_t-3.jpg", "2020-0210-101957_078140_movie_t-2.jpg", "2020-0210-101957_078140_movie_t-1.jpg", "2020-0210-101957_078140_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow two-lane suburban street with a solid centerline curves gently right between low walls and railings; the pavement looks smooth and traffic is light with no vehicles ahead or oncoming. A person stands on the left sidewalk next to bicycles near the corner, stationary by the railing and close to the curb, and may step into the ego lane as the road bends. No other road users are apparent. A yellow diamond warning sign on the left indicates the upcoming right curve, and the walls along the bend make the corner partly blind.", "hazard_reasoning": "Under these conditions, no immediate hazards are present and the driver can proceed safely."}
{"id": "train_05132", "split": "train", "clip_key": "2020-0127-132751_034908_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "034908"}, "frames": ["2020-0127-132751_034908_movie_t-3.jpg", "2020-0127-132751_034908_movie_t-2.jpg", "2020-0127-132751_034908_movie_t-1.jpg", "2020-0127-132751_034908_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs alongside an opposite carriageway, divided by a metal rail median; the pavement is smooth and traffic flows at a steady moderate pace. Ahead in the ego right lane, a black van drives away from the camera and gradually recedes, loosely setting the pace. In the adjacent left lane, two small trucks travel slightly ahead at a similar speed, which limits immediate lane changes for passing. A silver convertible remains behind-left in the left lane and keeps pace without encroaching. On the opposite side, oncoming cars move steadily past. A pedestrian overpass spans the road with an overhead blue directional sign mounted above the lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05133", "split": "train", "clip_key": "2020-0213-143552_068586_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "068586"}, "frames": ["2020-0213-143552_068586_movie_t-3.jpg", "2020-0213-143552_068586_movie_t-2.jpg", "2020-0213-143552_068586_movie_t-1.jpg", "2020-0213-143552_068586_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with two lanes in the ego direction runs alongside shops, with a raised shrub median to the right and clean pavement; traffic is moderate and momentarily slower ahead. A white box truck directly in front in the ego lane slows, constraining the ego car's pace. A small white hatchback ahead to the left proceeds straight in the curbside lane at a steady speed. On the far side of the median, oncoming vehicles move past without interaction.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's deceleration could close the gap quickly, so the driver should slow down to maintain a safe distance."}
{"id": "train_05134", "split": "train", "clip_key": "titan_clip_483_000102_movie", "source": {"subset": "titan", "scenario": "clip_483", "frame": "000102"}, "frames": ["titan_clip_483_000102_movie_t-3.jpg", "titan_clip_483_000102_movie_t-2.jpg", "titan_clip_483_000102_movie_t-1.jpg", "titan_clip_483_000102_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked scooter", "environment_perception": "An urban street with a single narrow lane and no median stretches ahead on smooth asphalt with a manhole; traffic is light as the car continues straight. A large 30 marking is painted on the pavement. A cyclist travels ahead in the ego lane at low speed, occupying the center and setting the pace. On the left sidewalk near storefronts, a pedestrian walks close to the curb. On the right sidewalk, another person stands by a parked bicycle next to a curbside van. A blue scooter is parked on the left side of the road at the curb, reducing clearance beside the lane.", "hazard_reasoning": "There is a blue scooter parked on the left side of the road. The parked scooter encroaches on the driving path and may require careful manoeuvring to avoid a collision."}
{"id": "train_05135", "split": "train", "clip_key": "titan_clip_661_000222_movie", "source": {"subset": "titan", "scenario": "clip_661", "frame": "000222"}, "frames": ["titan_clip_661_000222_movie_t-3.jpg", "titan_clip_661_000222_movie_t-2.jpg", "titan_clip_661_000222_movie_t-1.jpg", "titan_clip_661_000222_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with smooth asphalt forms a two-way road without a median. Traffic moves slowly as two white delivery trucks ahead occupy most of the left-side travel lane. On the right edge, a cyclist in a gray shirt rides toward the ego vehicle because the sidewalk space is crowded with posts and signs, so the rider may encroach into the ego lane. A pedestrian in a white shirt ahead right walks along the curb beside the trucks near the traveled way.", "hazard_reasoning": "There is a cyclist wearing a gray shirt, cycling on the right side of the road, towards the ego car, because the sidewalk is occupied. The cyclist may enter the ego-vehicle's path unexpectedly, so the driver should slow down to maintain a safe distance."}
{"id": "train_05136", "split": "train", "clip_key": "titan_clip_1226_000516_movie", "source": {"subset": "titan", "scenario": "clip_1226", "frame": "000516"}, "frames": ["titan_clip_1226_000516_movie_t-3.jpg", "titan_clip_1226_000516_movie_t-2.jpg", "titan_clip_1226_000516_movie_t-1.jpg", "titan_clip_1226_000516_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban side street with a single narrow lane runs between mid-rise buildings, paved with bricks and edged by metal railings; the surface looks smooth and traffic is very light with no moving vehicles. Two pedestrians ahead on the right walk along the edge of the carriageway, moving in the same direction as the ego vehicle and staying beside the storefronts, so their proximity could constrain the vehicle's pace. Farther ahead near the right rail a third pedestrian stands or walks slowly, remaining close to the curb. A scooter is parked in a recessed area on the left, and a shop banner protrudes slightly toward the lane.", "hazard_reasoning": "No immediate hazards are detected given clear visibility and an unobstructed straight path. The driver can maintain current speed and proceed with normal vigilance."}
{"id": "train_05137", "split": "train", "clip_key": "titan_clip_890_000354_movie", "source": {"subset": "titan", "scenario": "clip_890", "frame": "000354"}, "frames": ["titan_clip_890_000354_movie_t-3.jpg", "titan_clip_890_000354_movie_t-2.jpg", "titan_clip_890_000354_movie_t-1.jpg", "titan_clip_890_000354_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the bicycle", "environment_perception": "An urban back street with storefronts lines a very narrow undivided two-way road with smooth pavement and light traffic. A cyclist ahead near the center rides away in the ego path, constraining the pace. On the right at the curb, a scooter with a rider is stopped and may pull into the lane. Bicycles are parked along both sides and narrow the roadway, including a black bicycle on the left parked partly in the ego lane because there is no parking spot. A no-parking sign is posted on the left.", "hazard_reasoning": "There is a black bicycle parked on the left side of the road, in the ego lane, because there is no parking spot. The bicycle obstructs the travel lane and could force a sudden steering manoeuvre, so the driver should carefully manoeuvre around it."}
{"id": "train_05138", "split": "train", "clip_key": "titan_clip_709_000516_movie", "source": {"subset": "titan", "scenario": "clip_709", "frame": "000516"}, "frames": ["titan_clip_709_000516_movie_t-3.jpg", "titan_clip_709_000516_movie_t-2.jpg", "titan_clip_709_000516_movie_t-1.jpg", "titan_clip_709_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian ahead", "environment_perception": "A narrow urban residential two-way road with no centerline runs straight between a concrete wall and a tree-lined walkway; the pavement is smooth and traffic is light with no other vehicles. Ahead on the left edge, a pedestrian in a cap and white shirt walks away from the ego car along the roadway margin, close to the travel path and may influence the ego vehicle's pace. The rest of the street remains clear with no oncoming or same-direction traffic visible. There are no salient signals or signs, and bollards on the left separate the walkway from the road.", "hazard_reasoning": "There is a pedestrian wearing a cap and a white shirt, walking on the left side of the road, away from the ego car. The pedestrian could potentially step into the roadway unexpectedly, so the driver should be aware of their presence."}
{"id": "train_05139", "split": "train", "clip_key": "titan_clip_481_000450_movie", "source": {"subset": "titan", "scenario": "clip_481", "frame": "000450"}, "frames": ["titan_clip_481_000450_movie_t-3.jpg", "titan_clip_481_000450_movie_t-2.jpg", "titan_clip_481_000450_movie_t-1.jpg", "titan_clip_481_000450_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban street with a single lane and no median curves ahead over cobblestone paving, and there is no moving vehicular traffic. A pedestrian wearing a white shirt and black pants, carrying a bag, walks away from the ego car in the middle of the road and occupies the vehicle's path. Farther ahead on the right sidewalk, another pedestrian walks along the curb and stays off the lane. Construction barriers and materials line the left edge while stacked crates sit at the right curb, tightening the corridor without blocking the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a bag, walking in the middle of the road, away from the ego car. The driver should carefully manoeuvre to avoid a collision with the pedestrian."}
{"id": "train_05140", "split": "train", "clip_key": "2020-0129-144857_057561_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "057561"}, "frames": ["2020-0129-144857_057561_movie_t-3.jpg", "2020-0129-144857_057561_movie_t-2.jpg", "2020-0129-144857_057561_movie_t-1.jpg", "2020-0129-144857_057561_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with one left-hand travel lane in the ego direction runs under a pedestrian footbridge, separated from oncoming lanes by a guardrail; the pavement is dry and clean, with light flow in the ego lane and heavy, slow oncoming traffic. A white box truck ahead in the ego lane drives away at a steady pace, effectively setting the speed of the ego car. To the right beyond the guardrail, a long queue of cars and small trucks creeps forward in the opposite direction and does not interact with the ego path. A striped buffer runs along the median, and a few vehicles stand on the opposite shoulder but remain isolated by the barrier.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05141", "split": "train", "clip_key": "titan_clip_62_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_62_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_62_000198_movie_t-3_augB1.jpg", "titan_clip_62_000198_movie_t-2_augB1.jpg", "titan_clip_62_000198_movie_t-1_augB1.jpg", "titan_clip_62_000198_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane per direction, no median, and smooth asphalt is lightly trafficked, and the ego slows as pedestrians enter ahead. Ahead in the ego lane, a pedestrian carrying an umbrella crosses toward the left side directly in front of the vehicle, constraining its pace. A few more pedestrians farther ahead also cross right-to-left across the ego path, keeping the lane occupied. A white delivery van in the same lane ahead moves slowly as it yields to the crossing people. A large black van is parked along the left curb near the ego, narrowing the lane, while others stand on the right sidewalk.", "hazard_reasoning": "There is a pedestrian carrying an umbrella, crossing the street in front of the ego car, to the left side. The driver should slow down to avoid a potential collision since the pedestrian is entering the vehicle's path."}
{"id": "train_05142", "split": "train", "clip_key": "2020-0220-102630_090712_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "090712"}, "frames": ["2020-0220-102630_090712_movie_t-3.jpg", "2020-0220-102630_090712_movie_t-2.jpg", "2020-0220-102630_090712_movie_t-1.jpg", "2020-0220-102630_090712_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes and smooth dry pavement runs straight past shops and apartments, with oncoming lanes separated to the right by a guardrail; traffic is moderate and steady. Ahead in the center lane, a pale yellow hatchback accelerates away through a green signal, increasing the gap from the ego vehicle. In the right lane slightly ahead, a red car continues straight at a similar pace, remaining in its lane and affecting the ego car's ability to change right. In the opposite carriageway beyond the barrier on the right, white vans approach as oncoming traffic without interacting. A pedestrian overpass spans the road near the signal.", "hazard_reasoning": "There is a yellow hatchback driving away from the ego car, because of the green traffic light, in front of the ego car. Follow the vehicle ahead to maintain safe distance and be prepared if it slows or stops unexpectedly."}
{"id": "train_05143", "split": "train", "clip_key": "2020-0225-102455_071698_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_071698_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_071698_movie_t-3_augB1.jpg", "2020-0225-102455_071698_movie_t-2_augB1.jpg", "2020-0225-102455_071698_movie_t-1_augB1.jpg", "2020-0225-102455_071698_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial without a visible median shows dry pavement and slow, heavy flow between tall buildings. A white van directly ahead in the ego lane slows due to congestion ahead, setting the ego vehicle's pace. In the right adjacent lane, a black taxi and a gray hatchback move slowly alongside and slightly ahead, advancing with the queue while remaining parallel to the ego car. Along the left curb, several service vans and trucks are stopped, occupying much of the leftmost lane.", "hazard_reasoning": "There is a white van slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. Drivers should slow down to maintain a safe following distance as the van ahead reduces speed due to congestion."}
{"id": "train_05144", "split": "train", "clip_key": "titan_clip_586_000186_movie", "source": {"subset": "titan", "scenario": "clip_586", "frame": "000186"}, "frames": ["titan_clip_586_000186_movie_t-3.jpg", "titan_clip_586_000186_movie_t-2.jpg", "titan_clip_586_000186_movie_t-1.jpg", "titan_clip_586_000186_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the sedan to avoid collision", "environment_perception": "An urban two-way street has a single lane in each direction, no median, and smooth pavement, with light traffic overall. Ahead in the ego lane, a black sedan is stopped with its rear door open as a passenger exits, blocking the path and constraining the ego vehicle's movement. Parked vehicles line the left curb, including a white minivan beside the stopped sedan that narrows the usable lane; no oncoming traffic is immediately visible.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, in front of the ego car, because a passenger is exiting the vehicle. The ego-vehicle should stop to ensure safety around the exiting passenger and prevent a rear-end collision."}
{"id": "train_05145", "split": "train", "clip_key": "2020-0203-114632_005087_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005087"}, "frames": ["2020-0203-114632_005087_movie_t-3.jpg", "2020-0203-114632_005087_movie_t-2.jpg", "2020-0203-114632_005087_movie_t-1.jpg", "2020-0203-114632_005087_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around cones and worker", "environment_perception": "An urban two-way street with one lane each direction curves ahead, the pavement in good condition but traffic slowed by a narrow work zone that compresses the left-side lane. Ahead in the ego lane, a construction worker stands among cones directing alternating flow. In the opposite lane, a city bus approaches through the gap past the cones, taking the bottleneck first and setting the pace. Closer on the right, a white box truck advances toward the crosswalk at low speed in the oncoming lane, further limiting room. A utility crane truck is parked ahead on the left with cones and equipment encroaching into the lane, creating the obstruction.", "hazard_reasoning": "There is construction work in front of the ego car. The driver should manoeuvre carefully around the cones and construction worker to avoid collisions."}
{"id": "train_05146", "split": "train", "clip_key": "titan_clip_450_000030_movie", "source": {"subset": "titan", "scenario": "clip_450", "frame": "000030"}, "frames": ["titan_clip_450_000030_movie_t-3.jpg", "titan_clip_450_000030_movie_t-2.jpg", "titan_clip_450_000030_movie_t-1.jpg", "titan_clip_450_000030_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows a narrow two-way road without lane markings, bordered by railings, with smooth pavement and light traffic as the ego vehicle heads slightly downhill toward a junction. An oncoming white van passes close on the right in its lane, briefly constraining lateral space. Farther ahead near the junction, another small white van is stationary in the opposite lane by the trees. A pedestrian on the left sidewalk walks toward the camera along the railing, remaining off the roadway. A blue no-parking sign stands on the left.", "hazard_reasoning": "No immediate hazard detected; although cones and a red light are present, the road remains clear and no vehicles are braking or pedestrians are present, so normal driving can continue safely."}
{"id": "train_05147", "split": "train", "clip_key": "2020-0227-104226_019164_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "019164"}, "frames": ["2020-0227-104226_019164_movie_t-3.jpg", "2020-0227-104226_019164_movie_t-2.jpg", "2020-0227-104226_019164_movie_t-1.jpg", "2020-0227-104226_019164_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial runs under an elevated roadway with two same-direction lanes and a right-side guardrail; the pavement is dry and smooth, and traffic is heavy in a stop-and-go queue. A white van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. To the left, a blue hatchback in the adjacent lane is also stopped alongside, limiting any chance to merge. Farther ahead, several cars queue in both lanes and inch forward, maintaining the backlog. Overhead lane boards show straight-ahead arrows. No oncoming traffic is visible, and no pedestrians or cyclists appear.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of the traffic congestion ahead. The driver should stop to maintain a safe following distance and avoid a collision due to the halt."}
{"id": "train_05148", "split": "train", "clip_key": "titan_clip_885_000072_movie", "source": {"subset": "titan", "scenario": "clip_885", "frame": "000072"}, "frames": ["titan_clip_885_000072_movie_t-3.jpg", "titan_clip_885_000072_movie_t-2.jpg", "titan_clip_885_000072_movie_t-1.jpg", "titan_clip_885_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for pedestrians", "environment_perception": "A narrow urban side street without a centerline runs between mid-rise buildings; the pavement is smooth and traffic is light with no moving vehicles visible. Ahead on the right side of the lane, two pedestrians in white tops-one in black pants and one in a skirt-walk away from the ego vehicle along the roadway because a parked vehicle blocks the shoulder, and their line of travel overlaps the ego lane. A silver van is parked along the right curb ahead, jutting into the lane and narrowing the passage.", "hazard_reasoning": "There are two pedestrians wearing black pants and a skirt walking along the right side of the lane, away from the ego car, because of the parked vehicle. The pedestrians may step further into the lane due to the parked van, so the driver should slow down to avoid a potential collision."}
{"id": "train_05149", "split": "train", "clip_key": "2020-0220-102630_030484_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "030484"}, "frames": ["2020-0220-102630_030484_movie_t-3.jpg", "2020-0220-102630_030484_movie_t-2.jpg", "2020-0220-102630_030484_movie_t-1.jpg", "2020-0220-102630_030484_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with no median and good pavement is congested, with traffic nearly stopped. The black van is stopped immediately in front of the ego car because of congestion ahead. Farther ahead in the same direction, a large white box truck sits in the queue, constraining the pace of vehicles behind. Two motor scooters filter forward from the left and between lanes, overtaking the line and possibly merging into the ego lane. A small curbside work truck with orange cones occupies space on the left, narrowing the approach.", "hazard_reasoning": "There is a black van stopped in front of the ego car, because of traffic congestion ahead. The driver should stop because the halted traffic and obstructed sight lines increase the risk of a rear-end collision."}
{"id": "train_05150", "split": "train", "clip_key": "2020-0213-143552_085461_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "085461"}, "frames": ["2020-0213-143552_085461_movie_t-3.jpg", "2020-0213-143552_085461_movie_t-2.jpg", "2020-0213-143552_085461_movie_t-1.jpg", "2020-0213-143552_085461_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban roadway carries one-way traffic on three main lanes with a separate right-exit lane, bounded by guardrails and a concrete wall; the pavement is dry with minor cracks, and traffic is very light. A blue box truck far ahead in the center lane proceeds steadily, remaining well ahead of the ego vehicle. A white vehicle even farther ahead in the left lane continues in the same direction without changing lanes. An off-ramp branches to the right as indicated by right-turn arrows, while an overhead electronic gantry appears blank and a blue direction board is visible ahead; no-stopping signs are posted along the wall.", "hazard_reasoning": "There are no hazards present in the scene, so the driver can proceed without any additional caution."}
{"id": "train_05151", "split": "train", "clip_key": "2020-0225-102455_005444_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "005444"}, "frames": ["2020-0225-102455_005444_movie_t-3.jpg", "2020-0225-102455_005444_movie_t-2.jpg", "2020-0225-102455_005444_movie_t-1.jpg", "2020-0225-102455_005444_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban intersection with wide zebra crossings and smooth pavement sits among midrise buildings; traffic is moderate as cross traffic moves through while the ego vehicle waits. Ahead, a white box truck crosses the junction from left to right, occupying the ego path and setting the pace. Close behind, a silver minivan also crosses in the same direction, continuing through the intersection. On the far left, a large dump truck proceeds toward the left across the junction and then clears. Storefronts, railings, and some parked bicycles line the right sidewalk.", "hazard_reasoning": "There is a black truck driving in the ego lane, away from the ego car, because the road ahead is clear. You should follow this vehicle to maintain a safe distance and respond promptly to the red light ahead."}
{"id": "train_05152", "split": "train", "clip_key": "titan_clip_207_000084_movie", "source": {"subset": "titan", "scenario": "clip_207", "frame": "000084"}, "frames": ["titan_clip_207_000084_movie_t-3.jpg", "titan_clip_207_000084_movie_t-2.jpg", "titan_clip_207_000084_movie_t-1.jpg", "titan_clip_207_000084_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "An urban commercial street with a narrow two-way roadway has no median and smooth pavement, and traffic in the same direction is light and slow. A white van ahead in the ego lane continues at a modest pace, effectively setting the flow. On the right side of the road, a pedestrian wearing black walks toward the ego vehicle along the curb and may edge into the lane. A blue-and-white van is stopped at the right curb near the camera, partially intruding into the roadway and narrowing the available space for passing.", "hazard_reasoning": "There is a pedestrian wearing black clothing and walking toward the ego car, on the right side of the road. The pedestrian's approach from a partially obstructed position reduces reaction time, so you should yield to avoid a potential collision."}
{"id": "train_05153", "split": "train", "clip_key": "titan_clip_1348_000276_movie", "source": {"subset": "titan", "scenario": "clip_1348", "frame": "000276"}, "frames": ["titan_clip_1348_000276_movie_t-3.jpg", "titan_clip_1348_000276_movie_t-2.jpg", "titan_clip_1348_000276_movie_t-1.jpg", "titan_clip_1348_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban intersection appears with a narrow two-way street climbing to the right; the surface is asphalt transitioning to textured paving, and a marked crosswalk spans the approach. A construction hoarding occupies the left corner, and overall traffic is very light with no moving vehicles. Ahead on the uphill street to the right, a pedestrian carrying a backpack walks away along the near edge of the roadway, close to the travel lane and potentially in the vehicle's path if it proceeds into that street. Slightly farther ahead on the same side, another pedestrian also walks uphill away from the camera along the edge, likewise relevant to the vehicle's intended path. No traffic signals are evident.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking on the left side of the road, away from the ego car. The pedestrian may step into the roadway unexpectedly, so the driver should slow down to ensure safe braking and avoid a collision."}
{"id": "train_05154", "split": "train", "clip_key": "titan_clip_306_000402_movie", "source": {"subset": "titan", "scenario": "clip_306", "frame": "000402"}, "frames": ["titan_clip_306_000402_movie_t-3.jpg", "titan_clip_306_000402_movie_t-2.jpg", "titan_clip_306_000402_movie_t-1.jpg", "titan_clip_306_000402_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian", "environment_perception": "A dense urban shopping street with a single narrow lane paved in bricks has no median or lane markings, and traffic is light as the ego vehicle rolls slowly. Ahead in the lane, a white mini-van pauses and then creeps forward, controlling the pace. On the right side of the road, a pedestrian wearing a striped shirt and black pants walks away from the ego car along the edge and may step into the lane. Farther ahead at the right curb, a delivery truck stands with orange cones and encroaches on the roadway, narrowing the passage. A no-entry sign appears at a small left-side side street, while shop displays, signboards, and parked bicycles line both sides and reduce clearance.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt and black pants, walking on the right side of the road, away from the ego car. The pedestrian may step into the lane unexpectedly from the sidewalk, so the driver should be aware of the pedestrian."}
{"id": "train_05155", "split": "train", "clip_key": "titan_clip_471_000522_movie", "source": {"subset": "titan", "scenario": "clip_471", "frame": "000522"}, "frames": ["titan_clip_471_000522_movie_t-3.jpg", "titan_clip_471_000522_movie_t-2.jpg", "titan_clip_471_000522_movie_t-1.jpg", "titan_clip_471_000522_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "A narrow urban shopping street with a single shared lane paved with interlocking blocks has no median and shows very light vehicle traffic. On the right side of the road, a man wearing gray pants, a white shirt, and a gray vest walks toward the ego vehicle along the edge of the lane and may enter its path. At the left shopfront, pedestrians stand close to the curb and edge toward the roadway, narrowing the passage. Farther ahead near the middle of the lane, additional pedestrians walk along the street in the same direction as the ego vehicle, constraining its pace.", "hazard_reasoning": "There is a man wearing gray pants, a white shirt, and a gray vest, and walking towards the ego car, on the right side of the road. This pedestrian is approaching the vehicle's path and could step into the lane, so the driver should maintain awareness and be prepared to react."}
{"id": "train_05156", "split": "train", "clip_key": "2020-0225-102455_023620_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "023620"}, "frames": ["2020-0225-102455_023620_movie_t-3.jpg", "2020-0225-102455_023620_movie_t-2.jpg", "2020-0225-102455_023620_movie_t-1.jpg", "2020-0225-102455_023620_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with two same-direction lanes and no median shows damp pavement and heavy, slow traffic stretching ahead. A silver sedan directly in front of the ego car slows because of congestion ahead, controlling the ego vehicle's pace. Farther ahead, a cyclist rides along the left edge of the lane, moving straight in the same direction within the ego vehicle's path. Another cyclist travels very close on the far left by the curb, proceeding forward parallel to the traffic while queues of vehicles pack the right lane.", "hazard_reasoning": "there is a silver sedan slowing down in front of the ego car, because of traffic congestion ahead. The driver should slow down to adjust to the reduced speed of the vehicle ahead and maintain a safe following distance."}
{"id": "train_05157", "split": "train", "clip_key": "2020-0203-114632_011383_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "011383"}, "frames": ["2020-0203-114632_011383_movie_t-3.jpg", "2020-0203-114632_011383_movie_t-2.jpg", "2020-0203-114632_011383_movie_t-1.jpg", "2020-0203-114632_011383_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban riverside setting with a very narrow single-carriageway road curves to the right between guardrails, the red pavement in good condition and traffic effectively absent throughout. A pedestrian ahead on the right shoulder walks away along the guardrail, close to the travel lane and potentially within the ego path as the road narrows into the bend. A yellow roadside warning sign and a pole-mounted Japanese notice indicate a curve ahead. Buildings crowd the left and the canal on the right creates a constrained, limited-sight corner.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05158", "split": "train", "clip_key": "titan_clip_363_000468_movie", "source": {"subset": "titan", "scenario": "clip_363", "frame": "000468"}, "frames": ["titan_clip_363_000468_movie_t-3.jpg", "titan_clip_363_000468_movie_t-2.jpg", "titan_clip_363_000468_movie_t-1.jpg", "titan_clip_363_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban residential scene shows a narrow two-way road without a centerline, bordered by houses on the left and hedges on the right; the pavement is dry and the traffic flow is light with no moving vehicles. On the left edge close to the ego vehicle, a pedestrian carrying a backpack and an umbrella walks away along the roadway, potentially constraining the ego car's path. On the right, another pedestrian approaches along the raised path beside the hedge, staying off the carriageway. Far ahead near the middle of the road, a third person walks away in the same direction, occupying part of the lane. A small white car is parked on the left ahead, narrowing the passage, and no oncoming traffic is visible.", "hazard_reasoning": "There is a pedestrian carrying a backpack and an umbrella, and walking on the left side of the road, away from the ego car. The pedestrian may step into the lane unexpectedly, so the driver should manoeuvre around to maintain safety."}
{"id": "train_05159", "split": "train", "clip_key": "titan_clip_33_000390_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_33_000390_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_33_000390_movie_t-3_augB1.jpg", "titan_clip_33_000390_movie_t-2_augB1.jpg", "titan_clip_33_000390_movie_t-1_augB1.jpg", "titan_clip_33_000390_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban narrow brick-paved street with a single shared lane passes between midrise buildings; the left curb is lined with stopped vehicles, and traffic is light and slow. A man in jeans and a black shirt walks away from the ego-vehicle in the middle of the road because a white van is parked along the left, and he occupies the ego path. Ahead on the right, a small group stands near the curb and one steps forward, potentially entering the lane. A white van and a pink delivery truck remain parked on the left, creating a pinch point that narrows clearance.", "hazard_reasoning": "There is a man dressed in jeans and a black shirt, walking in the middle of the road away from the ego-car because of the white van parked on the left side. The pedestrian's position in the lane due to the obstruction poses a collision risk if not avoided."}
{"id": "train_05160", "split": "train", "clip_key": "2020-0225-145150_020002_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "020002"}, "frames": ["2020-0225-145150_020002_movie_t-3.jpg", "2020-0225-145150_020002_movie_t-2.jpg", "2020-0225-145150_020002_movie_t-1.jpg", "2020-0225-145150_020002_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with left-hand traffic has two same-direction lanes plus a narrow curbside contraflow lane on the right, separated by a painted buffer; a raised shrub median on the left divides from the far-side carriageway, and the dry pavement looks smooth with moderate, steady flow. Ahead in the ego lane, a gray van drives away from the ego car, gradually increasing the gap. In the adjacent inner lane ahead, a small white box truck travels at a similar pace, influencing overtaking options. To the right, a white sedan approaches in the opposite direction within the separated curbside lane and passes without affecting the ego path.", "hazard_reasoning": "There is a gray van driving in the ego lane away from the ego car. The van ahead could decelerate unexpectedly, so remain cautious and maintain a safe following distance."}
{"id": "train_05161", "split": "train", "clip_key": "titan_clip_1041_000048_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1041_000048_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1041_000048_movie_t-3_augB1.jpg", "titan_clip_1041_000048_movie_t-2_augB1.jpg", "titan_clip_1041_000048_movie_t-1_augB1.jpg", "titan_clip_1041_000048_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to cyclist ahead", "environment_perception": "A narrow urban shopping street with no center divider and smooth asphalt carries light, slow traffic. Directly ahead in the middle of the road, a cyclist wearing a white T-shirt and green shorts rides away from the ego car with a black handbag slung, occupying the ego path and setting the pace. Another cyclist farther ahead near the left side proceeds in the same direction close to the storefronts and poses less constraint. On the right edge, a pedestrian walks along the curb beside rows of parked bicycles that tighten the usable lane and create mild roadside clutter. No traffic signals or speed signs are prominent.", "hazard_reasoning": "There is a cyclist wearing a white t-shirt and green shorts, carrying a black handbag, and cycling away from the ego car, in the middle of the road. The cyclist is riding in the center of the lane ahead, requiring the driver to yield to avoid collision."}
{"id": "train_05162", "split": "train", "clip_key": "2020-0205-103411_105358_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-103411_105358_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-103411_105358_movie_t-3_augB1.jpg", "2020-0205-103411_105358_movie_t-2_augB1.jpg", "2020-0205-103411_105358_movie_t-1_augB1.jpg", "2020-0205-103411_105358_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with dry, well-kept pavement runs straight, bordered on the right by a hatched median and guardrail, and traffic is light to moderate. A white box truck ahead in the ego lane slows, constraining the ego vehicle's pace. A small dark van slightly ahead to the left continues in the adjacent lane at a steady speed and gradually passes without moving toward the ego lane. On the far right shoulder beyond the hatched area, two large semitrailers and a blue flatbed remain parked, reducing the shoulder space but staying outside the travel lanes. An overhead gantry sign is visible.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The driver should slow down to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_05163", "split": "train", "clip_key": "2020-0228-102841_028064_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "028064"}, "frames": ["2020-0228-102841_028064_movie_t-3.jpg", "2020-0228-102841_028064_movie_t-2.jpg", "2020-0228-102841_028064_movie_t-1.jpg", "2020-0228-102841_028064_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for the crossing pedestrian.", "environment_perception": "An urban two-way street with one lane each way approaches a signalized intersection, the pavement is smooth, there is no median, and traffic is light with no nearby vehicles moving. A pedestrian wearing a brown jacket crosses the zebra directly ahead from right to left, walking through the ego lane while the traffic light for the ego direction is red. Another pedestrian remains on the far left sidewalk and does not enter the road. An overhead footbridge and a small cone-lined work area on the left curb stay clear of the travel lane.", "hazard_reasoning": "There is a pedestrian wearing a brown jacket, crossing the street at a pedestrian crossing, from the right side to the left side, because of a red traffic light. Stop to yield for the pedestrian in the crosswalk to avoid collision."}
{"id": "train_05164", "split": "train", "clip_key": "titan_clip_350_000120_movie", "source": {"subset": "titan", "scenario": "clip_350", "frame": "000120"}, "frames": ["titan_clip_350_000120_movie_t-3.jpg", "titan_clip_350_000120_movie_t-2.jpg", "titan_clip_350_000120_movie_t-1.jpg", "titan_clip_350_000120_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck.", "environment_perception": "A narrow urban two-way street with smooth pavement and sidewalk railings appears, and light traffic slows ahead. Farther ahead in the left-side ego lane, a white box truck is parked with its rear open and cones around it as it is being unloaded, blocking the lane and constraining progress. Immediately in front of the ego car, a small silver car in the same lane slows and waits behind the truck. Near the truck on the left sidewalk, a person stands close to the curb by the unloading area. A zebra crossing passes beneath the camera at the start, with no traffic signals visible.", "hazard_reasoning": "There is a white truck parked in the ego lane, in front of the ego car, because it is being unloaded. The white truck blocks the ego lane as it is unloading, requiring the driver to manoeuvre carefully around it to avoid a collision."}
{"id": "train_05165", "split": "train", "clip_key": "2020-0203-154554_015172_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "015172"}, "frames": ["2020-0203-154554_015172_movie_t-3.jpg", "2020-0203-154554_015172_movie_t-2.jpg", "2020-0203-154554_015172_movie_t-1.jpg", "2020-0203-154554_015172_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrian crossing", "environment_perception": "An urban multi-lane intersection with no median and dry pavement is ahead, with moderate cross traffic moving through. Ahead, a pedestrian wearing a black suit walks from left to right on the pedestrian crossing directly in front of the ego lane, occupying the intended path. Far ahead, a white van travels laterally from right to left across the intersection, crossing the ego vehicle's path. Several other cars on the cross street proceed straight in both directions, forming a steady stream that limits movement from the ego approach. Overhead traffic signals are visible above the junction.", "hazard_reasoning": "There is a pedestrian wearing a black suit, walking on the pedestrian crossing. The driver should stop to yield to the pedestrian as they are occupying the crosswalk, posing a collision risk."}
{"id": "train_05166", "split": "train", "clip_key": "titan_clip_1014_000504_movie", "source": {"subset": "titan", "scenario": "clip_1014", "frame": "000504"}, "frames": ["titan_clip_1014_000504_movie_t-3.jpg", "titan_clip_1014_000504_movie_t-2.jpg", "titan_clip_1014_000504_movie_t-1.jpg", "titan_clip_1014_000504_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shopping street with a single narrow lane and smooth asphalt lacks a median, and bollards separate the roadway from busy sidewalks; vehicular traffic is light with no cars immediately ahead. A pedestrian wearing a cap and blue shirt pushes a small cart along the left edge toward the ego vehicle, moving within the lane and potentially constraining the approach. Another pedestrian at the left curb walks along the roadway margin beside the railings, close to the travel path. Groups of pedestrians on the right sidewalk proceed past storefronts while staying behind the bollards and out of the lane.", "hazard_reasoning": "There is a pedestrian wearing a cap, a blue shirt, and pushing a cart, walking on the left side of the road, toward the ego car. The driver should carefully manoeuvre around the pedestrian to prevent a potential collision as they approach the vehicle."}
{"id": "train_05167", "split": "train", "clip_key": "2020-0129-105040_045303_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "045303"}, "frames": ["2020-0129-105040_045303_movie_t-3.jpg", "2020-0129-105040_045303_movie_t-2.jpg", "2020-0129-105040_045303_movie_t-1.jpg", "2020-0129-105040_045303_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial under an elevated expressway, with a right-side guardrail and smooth pavement, carries moderate traffic that begins moving from a queue at a signal. A silver hatchback directly ahead in the ego lane accelerates away as the light turns green, opening a gap to the ego vehicle. To the left, a large truck slightly ahead rolls forward in the adjacent lane, keeping pace beside the ego path and limiting room to merge. Farther left, several passenger cars start up from the queue and advance slowly in the same direction.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05168", "split": "train", "clip_key": "titan_clip_112_000432_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_112_000432_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_112_000432_movie_t-3_augB1.jpg", "titan_clip_112_000432_movie_t-2_augB1.jpg", "titan_clip_112_000432_movie_t-1_augB1.jpg", "titan_clip_112_000432_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with brick paving and no centerline runs between tall buildings, the surface smooth and dry and traffic light. Ahead in the ego lane, a pedestrian in a white shirt walks in the middle of the road away from the camera to get around a parked van on the left, occupying the ego path. On the right edge near the curb, another pedestrian walks toward the camera while staying out of the lane. To the left beside the vending machines, a man walks away along the lane edge close to the van. A silver van parked on the left and several motorcycles parked on the right further narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking in the middle of the road, away from the ego car, because of the parked vehicle on the left. The driver should slow down to avoid a potential collision as the pedestrian is in the vehicle's path."}
{"id": "train_05169", "split": "train", "clip_key": "2020-0127-132751_010967_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "010967"}, "frames": ["2020-0127-132751_010967_movie_t-3.jpg", "2020-0127-132751_010967_movie_t-2.jpg", "2020-0127-132751_010967_movie_t-1.jpg", "2020-0127-132751_010967_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light ahead", "environment_perception": "A broad urban arterial with three same-direction lanes and a landscaped median runs through high-rise buildings; the pavement is clean and dry, and traffic forms a queue at a signal. A black sedan directly ahead in the ego lane is stopped at the red light, constraining the ego car. In the right lane, a small silver van moves slowly toward the junction alongside the queue. Farther ahead to the right, a yellow taxi eases to a stop in its lane. Overhead traffic lights ahead show red.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane because of red traffic lights. The driver should stop at the red light ahead to avoid colliding with the halted vehicle."}
{"id": "train_05170", "split": "train", "clip_key": "2020-0228-150133_009644_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "009644"}, "frames": ["2020-0228-150133_009644_movie_t-3.jpg", "2020-0228-150133_009644_movie_t-2.jpg", "2020-0228-150133_009644_movie_t-1.jpg", "2020-0228-150133_009644_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction runs between mid-rise buildings; the pavement is dry and traffic is slow near a junction. Directly ahead in the ego lane a gray box truck is stopped at the line because the traffic light is red, holding the ego vehicle. In the oncoming lane to the right a small white van moves past slowly, remaining in its lane. Along the left side a dark car is halted near the curb beside the truck, tightening the space. On the right sidewalk several pedestrians wait near the corner by the guardrail.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of a red traffic light. The driver must stop to comply with the signal and avoid colliding with the stationary vehicle."}
{"id": "train_05171", "split": "train", "clip_key": "titan_clip_1379_000396_movie", "source": {"subset": "titan", "scenario": "clip_1379", "frame": "000396"}, "frames": ["titan_clip_1379_000396_movie_t-3.jpg", "titan_clip_1379_000396_movie_t-2.jpg", "titan_clip_1379_000396_movie_t-1.jpg", "titan_clip_1379_000396_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around cone carefully", "environment_perception": "An urban street with no centerline runs between buildings and a viaduct; the single narrow carriageway has patched, wet pavement and traffic is light with no moving vehicles nearby. A large cement mixer truck stands on the left at a construction site, its body intruding into the lane and narrowing the path of the ego vehicle. Several pedestrians ahead near the middle of the road walk along and across the lane, so they may enter the ego path. A traffic cone sits in the road to the left, and additional cones line both sides around the work zone, emphasizing the constricted passage.", "hazard_reasoning": "There is a traffic cone in the road, to the left. This cone represents an obstacle that could cause vehicle instability or collision if struck, so the driver should manoeuvre around it carefully."}
{"id": "train_05172", "split": "train", "clip_key": "2020-0226-140503_100836_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "100836"}, "frames": ["2020-0226-140503_100836_movie_t-3.jpg", "2020-0226-140503_100836_movie_t-2.jpg", "2020-0226-140503_100836_movie_t-1.jpg", "2020-0226-140503_100836_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs straight with two same-direction lanes on the left and oncoming lanes to the right, divided by a painted median; the dry pavement looks smooth and traffic is moderate. Ahead in the ego lane a gray truck slows, briefly constraining the pace. Slightly farther ahead and left of center, a motor scooter travels straight in the same direction at a steady speed, affecting following distance. To the right, a white sedan and several other vehicles approach in the oncoming lanes, remaining separated from the ego lane. Farther ahead, orange cones form a work area near the median that narrows space through the center.", "hazard_reasoning": "There is a gray truck slowing down in the ego lane. The truck's reduced speed ahead could require sudden braking if not anticipated, so you should slow down now to maintain a safe following distance."}
{"id": "train_05173", "split": "train", "clip_key": "2020-0204-150838_066259_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "066259"}, "frames": ["2020-0204-150838_066259_movie_t-3.jpg", "2020-0204-150838_066259_movie_t-2.jpg", "2020-0204-150838_066259_movie_t-1.jpg", "2020-0204-150838_066259_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the same direction runs beside an elevated expressway, bounded by a hedge on the left and a guardrail and fence on the right; the pavement is smooth and traffic is light and steady. A gray truck ahead in the ego lane proceeds straight and gradually pulls away from the camera, effectively setting the ego car's pace. In the adjacent left lane slightly ahead, a white van continues straight at a similar speed without encroaching on the ego path. Farther ahead in that lane, another box truck moves in the same direction, maintaining distance. A green overhead directional sign is visible ahead.", "hazard_reasoning": "There is a gray truck driving in the ego lane away from the ego car. The truck ahead may brake suddenly or limit your forward visibility, so maintain caution and distance."}
{"id": "train_05174", "split": "train", "clip_key": "2020-0214-145407_037512_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "037512"}, "frames": ["2020-0214-145407_037512_movie_t-3.jpg", "2020-0214-145407_037512_movie_t-2.jpg", "2020-0214-145407_037512_movie_t-1.jpg", "2020-0214-145407_037512_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban two-lane one-way ramp runs between barriers with a gentle right curve under an elevated structure; the pavement looks smooth and traffic is light. Ahead in the ego lane, a white box truck slows and sets the ego vehicle's pace. To the right, a dark car continues forward in the adjacent lane alongside, limiting an immediate lane change to pass. A red roadside sign on the left reads Speed Down, and construction fencing lines that side, narrowing the corridor.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's deceleration could force a sudden brake to avoid collision, so slow down to maintain safe distance."}
{"id": "train_05175", "split": "train", "clip_key": "2020-0203-154554_079827_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "079827"}, "frames": ["2020-0203-154554_079827_movie_t-3.jpg", "2020-0203-154554_079827_movie_t-2.jpg", "2020-0203-154554_079827_movie_t-1.jpg", "2020-0203-154554_079827_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with left-side driving runs between mid-rise buildings and trees, with painted lane lines and a central marking; the pavement is dry and traffic is heavy and mostly stopped. A white sedan directly ahead in the ego lane is stopped because congestion blocks the way, holding the ego vehicle. To the left, a black sedan in the adjacent same-direction lane is also stationary in the queue, discouraging any lane change. On the right, a silver van proceeds as oncoming traffic in its lane, passing the queue while remaining separated by markings. Low sun ahead through bare trees causes noticeable glare, slightly reducing visibility.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop immediately to maintain a safe distance and avoid a collision."}
{"id": "train_05176", "split": "train", "clip_key": "titan_clip_38_000030_movie", "source": {"subset": "titan", "scenario": "clip_38", "frame": "000030"}, "frames": ["titan_clip_38_000030_movie_t-3.jpg", "titan_clip_38_000030_movie_t-2.jpg", "titan_clip_38_000030_movie_t-1.jpg", "titan_clip_38_000030_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A dense urban shopping street features a single narrow lane with no center divider, smooth pavement, and light, slow traffic. A black van is stopped on the left side of the road ahead, protruding into the lane and narrowing the passage. On the right sidewalk near the ego, pedestrians walk close to the curb but stay on the walkway. Farther ahead, several pedestrians cluster around delivery carts set in the middle of the lane, partially blocking the path and slowing vehicles.", "hazard_reasoning": "There is a black van stopped on the left side of the road. The stopped van partially blocks the lane and may cause a collision if not negotiated carefully, so the driver should manoeuvre cautiously under this situation."}
{"id": "train_05177", "split": "train", "clip_key": "titan_clip_270_000636_movie", "source": {"subset": "titan", "scenario": "clip_270", "frame": "000636"}, "frames": ["titan_clip_270_000636_movie_t-3.jpg", "titan_clip_270_000636_movie_t-2.jpg", "titan_clip_270_000636_movie_t-1.jpg", "titan_clip_270_000636_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the crossing pedestrian.", "environment_perception": "An urban back street with two-way traffic leads to an unsignalized cross street; the lane is narrow, the asphalt is smooth, and traffic is light. As the car approaches the intersection, a pedestrian carrying a handbag crosses from the left side to the right directly ahead, passing across the vehicle's path. Two men farther ahead move rightward along the cross street through the mouth of the intersection, lingering in front of the car and constraining its approach. On the left corner, a couple of pedestrians stand at the curb near a driveway without stepping out. A convex mirror is mounted on the right corner, and several parked bicycles line the building, with close buildings creating a partially blind junction.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking from the left side of the intersection to the right side. The driver should be aware because the pedestrian may move into the vehicle's path unexpectedly."}
{"id": "train_05178", "split": "train", "clip_key": "titan_clip_712_000348_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_712_000348_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_712_000348_movie_t-3_augB1.jpg", "titan_clip_712_000348_movie_t-2_augB1.jpg", "titan_clip_712_000348_movie_t-1_augB1.jpg", "titan_clip_712_000348_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street between buildings, with no center divider, has dry pavement and light traffic as the ego car proceeds toward a small intersection. A man wearing a black T-shirt and black pants walks in the middle of the lane ahead, moving away and directly occupying the ego path. Farther ahead on the cross street, a white van passes from left to right without entering the lane. A silver car stands stopped at the right curb, narrowing the roadway near the ego. Large stop markings on the pavement indicate a required stop before the junction.", "hazard_reasoning": "There is a man wearing a black T-shirt with Black pants walking in the middle of the road. The driver should slow down to avoid a potential collision with the pedestrian straying into the lane."}
{"id": "train_05179", "split": "train", "clip_key": "2020-0129-105040_101471_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "101471"}, "frames": ["2020-0129-105040_101471_movie_t-3.jpg", "2020-0129-105040_101471_movie_t-2.jpg", "2020-0129-105040_101471_movie_t-1.jpg", "2020-0129-105040_101471_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial has smooth pavement, a central raised median, and a separated right-turn bay, with heavy stop-and-go traffic near a signalized intersection. A small white pickup truck is stopped directly ahead in the ego lane because of congestion ahead, holding the ego vehicle. In the adjacent lane to the left, a black minivan and a large white box truck wait in the queue at a standstill, constraining any lane change. At the far left edge a motorcyclist is stopped beside the queue, remaining clear of the ego path. Overhead direction boards indicate two through lanes and a right-turn lane. Storefronts and roadside trees line both sides, and a low barrier runs along the median.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver needs to stop to avoid colliding with the halted truck and adapt to the congested traffic flow."}
{"id": "train_05180", "split": "train", "clip_key": "2020-0225-102455_040163_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "040163"}, "frames": ["2020-0225-102455_040163_movie_t-3.jpg", "2020-0225-102455_040163_movie_t-2.jpg", "2020-0225-102455_040163_movie_t-1.jpg", "2020-0225-102455_040163_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with a planted median and wet pavement approaches a signalized intersection, and traffic moves slowly. Directly ahead in the ego lane a white-and-yellow box truck is stopped, holding the ego vehicle. In the adjacent right same-direction lane, a white car continues forward toward the junction and passes the truck. Oncoming traffic is separated by the median and remains distant with no effect on the ego path. Overhead signal heads and a pedestrian footbridge span the intersection.", "hazard_reasoning": "There is a white-and-yellow truck stopped in the ego lane. You should stop to avoid a rear-end collision with the halted vehicle ahead."}
{"id": "train_05181", "split": "train", "clip_key": "2020-0206-142535_044687_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "044687"}, "frames": ["2020-0206-142535_044687_movie_t-3.jpg", "2020-0206-142535_044687_movie_t-2.jpg", "2020-0206-142535_044687_movie_t-1.jpg", "2020-0206-142535_044687_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban arterial with smooth asphalt carries multiple lanes in the ego vehicle's direction and no physical median is visible; traffic is moderate and currently stopped at a signal. A gray hatchback directly ahead in the ego lane is stopped because the light shows red, holding the ego car in place. Farther ahead in the same lane, a white van also waits in the queue. To the right, cars in the adjacent lane slow and stop at the same signal, remaining ahead without merging. Overhead signals on gantries display red, and commercial buildings line both sides of the street.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car in the ego lane, because the light is red. The driver should stop immediately to avoid a collision with the halted vehicle ahead aligned with the red signal."}
{"id": "train_05182", "split": "train", "clip_key": "2020-0213-143552_006481_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "006481"}, "frames": ["2020-0213-143552_006481_movie_t-3.jpg", "2020-0213-143552_006481_movie_t-2.jpg", "2020-0213-143552_006481_movie_t-1.jpg", "2020-0213-143552_006481_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the gray truck", "environment_perception": "An urban multilane arterial runs straight with two to three lanes each way, separated only by painted lines; the dry pavement looks smooth and traffic is light to moderate. Ahead in the left curb lane, a dark box truck sits stopped near the sidewalk, partially occupying the lane and narrowing the space. Farther ahead in the inner same-direction lanes, a small truck and another larger truck move away at a steady pace without impeding the curb lane. On the opposing side, there is a gray truck driving toward the ego car on the right side of the road in its lane, accompanied by other oncoming cars.", "hazard_reasoning": "There is a gray truck driving towards the ego car on the right side of the road. The truck's proximity in the adjacent lane could lead to a sudden merge or drift, risking a collision if the driver is not alert."}
{"id": "train_05183", "split": "train", "clip_key": "titan_clip_960_000066_movie", "source": {"subset": "titan", "scenario": "clip_960", "frame": "000066"}, "frames": ["titan_clip_960_000066_movie_t-3.jpg", "titan_clip_960_000066_movie_t-2.jpg", "titan_clip_960_000066_movie_t-1.jpg", "titan_clip_960_000066_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban side street with brick paving and a marked crosswalk lies ahead; the ego travels in a single lane with no median, the surface is smooth, and traffic is light. On the right, a man wearing a blue bandana pushes a hand cart and moves left across toward the crosswalk and into the ego path, so he may enter the lane. On the left, several pedestrians walk along the sidewalk near the corner by the crosswalk without stepping into the roadway. Farther ahead to the right, a cyclist rides along the street away from the camera and does not interact. A pedestrian crossing sign is posted, and a black car is parked on the right edge beyond the crosswalk.", "hazard_reasoning": "There is a man wearing a blue bandana, pushing a hand cart, and crossing the street from the right side to the left side, towards a crosswalk and the ego-car. The driver should manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_05184", "split": "train", "clip_key": "titan_clip_1014_000204_movie", "source": {"subset": "titan", "scenario": "clip_1014", "frame": "000204"}, "frames": ["titan_clip_1014_000204_movie_t-3.jpg", "titan_clip_1014_000204_movie_t-2.jpg", "titan_clip_1014_000204_movie_t-1.jpg", "titan_clip_1014_000204_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing to the right", "environment_perception": "A dense urban shopping street with a narrow single travel lane, no center divider, and smooth asphalt shows very light vehicle traffic. Bollards and storefronts line both sides, and a zebra crossing is visible at the right corner. Several pedestrians ahead are in the roadway, crossing in both directions and occupying the ego path, constraining the available space. A pedestrian wearing white clothing crosses the road toward the right side in front of the ego vehicle, remaining directly relevant as they traverse the lane. On the near right, a person with an umbrella waits at the zebra crossing and may step into the lane.", "hazard_reasoning": "There is a pedestrian wearing white clothing, crossing the road to the right side. The pedestrian could enter the vehicle's path unexpectedly, so be aware and prepare to adjust speed."}
{"id": "train_05185", "split": "train", "clip_key": "titan_clip_420_000462_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_420_000462_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_420_000462_movie_t-3_augB1.jpg", "titan_clip_420_000462_movie_t-2_augB1.jpg", "titan_clip_420_000462_movie_t-1_augB1.jpg", "titan_clip_420_000462_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrians", "environment_perception": "An urban residential scene shows a narrow two-way road without a center line or sidewalks; the asphalt is smooth with several manhole covers and strong shadows, and overall traffic is very light. Ahead on the right half of the roadway, four male pedestrians wearing white shirts and black pants walk together toward the ego vehicle while talking, occupying the middle of the road because there is no sidewalk and potentially encroaching on the ego's line. A small car is parked in a driveway to the left and bicycles are lined up by an apartment entrance, with no other moving road users or traffic signals visible.", "hazard_reasoning": "There are four male pedestrians, wearing white shirts and black pants, talking in a group, and walking towards the ego-car, in the middle of the road, because there is no sidewalk. The driver should manoeuvre carefully around the group to avoid collision with the pedestrians walking directly in the vehicle's path."}
{"id": "train_05186", "split": "train", "clip_key": "titan_clip_631_000138_movie", "source": {"subset": "titan", "scenario": "clip_631", "frame": "000138"}, "frames": ["titan_clip_631_000138_movie_t-3.jpg", "titan_clip_631_000138_movie_t-2.jpg", "titan_clip_631_000138_movie_t-1.jpg", "titan_clip_631_000138_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of the pedestrian", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway has smooth pavement, no centerline, and a green-marked shoulder on the right; traffic is light with no same-direction or oncoming vehicles visible. A pedestrian wearing blue pants and a white T-shirt walks toward the ego car along the right side by the wall, staying on the painted shoulder and potentially entering the ego lane. Far ahead on the left sidewalk, a couple of pedestrians move past storefronts without affecting the vehicle.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a white t-shirt, walking toward the ego car on the right side of the road. Since the pedestrian is moving toward the vehicle on the roadway, the driver should be aware of the pedestrian to prevent a potential collision."}
{"id": "train_05187", "split": "train", "clip_key": "2020-0207-101955_009565_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "009565"}, "frames": ["2020-0207-101955_009565_movie_t-3.jpg", "2020-0207-101955_009565_movie_t-2.jpg", "2020-0207-101955_009565_movie_t-1.jpg", "2020-0207-101955_009565_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings; the asphalt is dry and the flow is light in our direction but heavier oncoming across a fenced median. A box truck directly ahead in the ego lane steadily pulls away, setting the pace as the car follows. In the left lane, a black passenger car travels slightly behind and then alongside without affecting the ego path. Across the median to the right, a red car and several others approach in a steady oncoming stream. A roadside sign on the left shows 50.", "hazard_reasoning": "There is a black truck driving in the ego lane, away from the ego car, because of a green traffic light. You should follow the vehicle ahead to maintain safe spacing as it proceeds through the intersection."}
{"id": "train_05188", "split": "train", "clip_key": "titan_clip_1137_000354_movie", "source": {"subset": "titan", "scenario": "clip_1137", "frame": "000354"}, "frames": ["titan_clip_1137_000354_movie_t-3.jpg", "titan_clip_1137_000354_movie_t-2.jpg", "titan_clip_1137_000354_movie_t-1.jpg", "titan_clip_1137_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way backstreet has one lane in each direction with no median, smooth asphalt, and light vehicular traffic with no oncoming vehicles visible. On the left edge beside a parked white van, two pedestrians wearing a white shirt and a blue shirt walk away from the ego car along the roadway, close to the lane and narrowing space. Farther ahead in the center of the ego lane, a lone pedestrian walks away in the lane, directly in the vehicle's path and constraining progress. On the right by storefronts, several pedestrians linger and walk near the curb, remaining outside the lane. A stopped van on the left shoulder and a parked bicycle on the right add roadside obstacles.", "hazard_reasoning": "There are two pedestrians wearing a white shirt and blue shirt, walking away from the ego car, on the left side of the road. The pedestrians may step into the lane unexpectedly, so the driver should slow down to avoid a potential collision."}
{"id": "train_05189", "split": "train", "clip_key": "titan_clip_782_000048_movie", "source": {"subset": "titan", "scenario": "clip_782", "frame": "000048"}, "frames": ["titan_clip_782_000048_movie_t-3.jpg", "titan_clip_782_000048_movie_t-2.jpg", "titan_clip_782_000048_movie_t-1.jpg", "titan_clip_782_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban commercial street with a single motor-traffic lane and no median stretches ahead; the asphalt is cracked and patched, and traffic is light. On the left edge of the ego lane, a male pedestrian with black hair in gray pants and a backpack walks away from the ego car along the curb, remaining ahead in the travel space. Farther ahead near the middle of the street, several pedestrians move across between shops and may enter the ego lane. On the right, a white van is stopped beside orange cones by a storefront, its body intruding slightly into the roadway and narrowing the passage. Bicycles are parked along the right, creating a cluttered edge.", "hazard_reasoning": "There is a male pedestrian with black hair, wearing gray pants and a backpack, who is walking on the left side of the ego lane, away from the ego-car. A yellow cone is obstructing the center of the lane, so the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_05190", "split": "train", "clip_key": "2020-0131-103016_045710_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "045710"}, "frames": ["2020-0131-103016_045710_movie_t-3.jpg", "2020-0131-103016_045710_movie_t-2.jpg", "2020-0131-103016_045710_movie_t-1.jpg", "2020-0131-103016_045710_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs straight between tall office buildings, with several same-direction lanes, no physical median, and dry, well?arked pavement; traffic is light to moderate and slows toward an intersection ahead. A black SUV directly ahead in the ego lane is stopped at the red light, constraining the ego vehicle. To the right, a white van in the adjacent lane rolls forward slowly, likely to pass the stopped queue. Farther ahead in the rightmost lanes, a few cars move slowly toward the junction without affecting the ego path. The signal ahead is red for this approach.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, because of the red traffic light. The driver needs to stop to avoid colliding with the stationary vehicle at the red traffic light."}
{"id": "train_05191", "split": "train", "clip_key": "2020-0207-101955_017235_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "017235"}, "frames": ["2020-0207-101955_017235_movie_t-3.jpg", "2020-0207-101955_017235_movie_t-2.jpg", "2020-0207-101955_017235_movie_t-1.jpg", "2020-0207-101955_017235_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection with clear lane arrows and smooth pavement, and traffic flows at a moderate, steady pace. A white truck directly ahead in the ego lane moves forward through the intersection on a green signal, effectively setting the ego car's pace. In the adjacent right same-direction lane, a red SUV accelerates straight and runs parallel slightly ahead without encroaching on the ego lane. At the far right corner near the curb, a motor scooter is stopped beside the crosswalk, waiting and not entering the lane. A few pedestrians stand on the left sidewalk by the railing, and distant oncoming traffic beyond the intersection remains separated by the central markings.", "hazard_reasoning": "There is a white truck moving forward in front of the ego car, because of the green traffic light, in the ego lane. The driver should remain cautious as the traffic light could change soon and the truck's movement may obscure important developments ahead."}
{"id": "train_05192", "split": "train", "clip_key": "2020-0226-101332_038271_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "038271"}, "frames": ["2020-0226-101332_038271_movie_t-3.jpg", "2020-0226-101332_038271_movie_t-2.jpg", "2020-0226-101332_038271_movie_t-1.jpg", "2020-0226-101332_038271_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban divided arterial with multiple same-direction lanes runs between tall office buildings, the pavement smooth, and traffic is heavy as vehicles queue at an intersection. A black sedan directly ahead in the ego lane is stopped for the red light and holds the ego vehicle at a standstill. In the adjacent left lane, a white van pulls up alongside and stops, limiting any lateral movement. Farther left, a line of cars and small vans waits toward the junction with only slight creeping. Over the approach the traffic signal shows red, and a metal fence forms the median on the right.", "hazard_reasoning": "There is a black sedan stopped in the ego lane because of the red traffic light at the intersection ahead. The driver should stop to avoid rear-ending this vehicle while it waits at the red light."}
{"id": "train_05193", "split": "train", "clip_key": "2020-0210-155354_013457_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "013457"}, "frames": ["2020-0210-155354_013457_movie_t-3.jpg", "2020-0210-155354_013457_movie_t-2.jpg", "2020-0210-155354_013457_movie_t-1.jpg", "2020-0210-155354_013457_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with one lane each direction and no median runs between mid-rise buildings; the pavement looks smooth and traffic is light. A silver hatchback directly ahead in the ego lane slows, constrained by congestion developing farther ahead, and it governs the ego vehicle's pace. Another small car is farther ahead in the same lane moving slowly. The opposite lane to the right carries little movement, and a light truck stands at the curb on that side. Prohibitory roadside signs on the left include a no U-turn symbol. Leafless street trees and railings line both sides, and no other hazards are evident.", "hazard_reasoning": "There is a silver hatchback slowing down in the ego lane because of traffic congestion ahead. Drivers should slow down to match the reduced speed and maintain a safe following distance to avoid a collision."}
{"id": "train_05194", "split": "train", "clip_key": "2020-0210-101957_066214_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "066214"}, "frames": ["2020-0210-101957_066214_movie_t-3.jpg", "2020-0210-101957_066214_movie_t-2.jpg", "2020-0210-101957_066214_movie_t-1.jpg", "2020-0210-101957_066214_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to maintain safe following distance.", "environment_perception": "An urban multi-lane road with two same-direction lanes, no median, and sound pavement; traffic is heavy and slow in a queue. A small white box truck directly ahead in the left ego lane is stopped because of congestion and blocks the ego vehicle's path. To the right, a black sedan alongside creeps forward in the adjacent lane as part of the same queue. Farther ahead-right, a white hatchback waits in line with little movement. An overhead blue guide sign indicates a T-junction ahead with a left-turn direction.", "hazard_reasoning": "A white truck is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain safe following distance and avoid a collision."}
{"id": "train_05195", "split": "train", "clip_key": "titan_clip_795_000384_movie", "source": {"subset": "titan", "scenario": "clip_795", "frame": "000384"}, "frames": ["titan_clip_795_000384_movie_t-3.jpg", "titan_clip_795_000384_movie_t-2.jpg", "titan_clip_795_000384_movie_t-1.jpg", "titan_clip_795_000384_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian ahead", "environment_perception": "An urban residential street with a narrow two-way carriageway and no center line extends ahead, the pavement smooth and traffic light with no moving vehicles visible. On the left at the near intersection, a pedestrian wearing a blue shirt, black pants, and a white helmet stands by the curb, waiting and potentially entering the ego lane. No vehicles are ahead in the same direction and no oncoming traffic appears. A convex safety mirror is mounted at the side street, and a parked bicycle along the left fence stays clear of the lane.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, black pants, and a white helmet, and standing on the left side of the intersection. The pedestrian may step into the roadway unexpectedly, so the driver should be aware of potential crossing movements."}
{"id": "train_05196", "split": "train", "clip_key": "2020-0207-151349_055422_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "055422"}, "frames": ["2020-0207-151349_055422_movie_t-3.jpg", "2020-0207-151349_055422_movie_t-2.jpg", "2020-0207-151349_055422_movie_t-1.jpg", "2020-0207-151349_055422_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban street with two lanes in the ego direction and no median runs between mid-rise buildings; the asphalt is worn but dry and traffic moves slowly. A gray sedan directly ahead in the ego lane slows because of congestion ahead, setting the ego-car's pace. In the adjacent right lane, a large box truck ahead also creeps forward in the queue, keeping the flow heavy. A black van slightly ahead to the right travels slowly near the curb in the right lane, reducing lateral space. A signalized intersection is visible in the distance.", "hazard_reasoning": "There's a gray sedan slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow to maintain a safe following distance and avoid collision under this situation."}
{"id": "train_05197", "split": "train", "clip_key": "titan_clip_663_000498_movie", "source": {"subset": "titan", "scenario": "clip_663", "frame": "000498"}, "frames": ["titan_clip_663_000498_movie_t-3.jpg", "titan_clip_663_000498_movie_t-2.jpg", "titan_clip_663_000498_movie_t-1.jpg", "titan_clip_663_000498_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the stopped cyclist.", "environment_perception": "A narrow two-way urban street with smooth pavement runs between buildings, with bollards along the right sidewalk and light overall traffic. Ahead in the oncoming lane, a dark car approaches slowly near the center of the tight roadway, constraining space. On the right edge near the bollards, a cyclist wearing a black T-shirt and black shorts is stopped beside the travel way and may enter the lane. Pedestrians walk along both sidewalks without crossing. A large silver van is parked along the left curb close to the camera, further narrowing the passage.", "hazard_reasoning": "A cyclist wearing a black t-shirt and black shorts is stopped on the right side of the lane. The stationary cyclist could obstruct the vehicle's path, requiring the driver to alter course to maintain safe clearance."}
{"id": "train_05198", "split": "train", "clip_key": "2020-0227-104226_036283_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "036283"}, "frames": ["2020-0227-104226_036283_movie_t-3.jpg", "2020-0227-104226_036283_movie_t-2.jpg", "2020-0227-104226_036283_movie_t-1.jpg", "2020-0227-104226_036283_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with one lane per direction runs straight ahead, divided by a yellow centerline; the dry pavement looks smooth and traffic is moderate. A white box truck ahead in the ego lane slows and the ego car follows it, constraining pace. Several white vans are parked along the left curb near the ego, narrowing the usable lane and reducing lateral clearance. A white van approaches in the oncoming lane to the right and continues straight, separated by the centerline.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's reduced speed ahead may require the driver to adjust speed to maintain a safe following distance, so the driver should prepare to slow down under this situation."}
{"id": "train_05199", "split": "train", "clip_key": "titan_clip_473_000504_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_473_000504_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_473_000504_movie_t-3_augB1.jpg", "titan_clip_473_000504_movie_t-2_augB1.jpg", "titan_clip_473_000504_movie_t-1_augB1.jpg", "titan_clip_473_000504_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be cautious of pedestrian ahead", "environment_perception": "A narrow urban shopping street with block-paved surface and no centerline runs between buildings; the pavement looks damp and motor traffic is light while pedestrian activity is moderate. The lane is partly narrowed on the right by a parked flatbed truck with cones and scaffolding. Ahead in the center, a pedestrian in a blue shirt walks toward the ego vehicle in the middle of the road, diverted there by the parked truck, and occupies the ego path. On the right at the truck's edge, a person stands by the cones near the travel line. Far up the street, a small vehicle continues away in the same direction.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking in the middle of the road, towards the ego car, because of the parked vehicle. The driver should be cautious because the pedestrian is forced into the travel lane and may not see the oncoming vehicle, increasing collision risk."}
{"id": "train_05200", "split": "train", "clip_key": "titan_clip_291_000366_movie", "source": {"subset": "titan", "scenario": "clip_291", "frame": "000366"}, "frames": ["titan_clip_291_000366_movie_t-3.jpg", "titan_clip_291_000366_movie_t-2.jpg", "titan_clip_291_000366_movie_t-1.jpg", "titan_clip_291_000366_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with a single undivided lane runs between storefronts, the pavement smooth and dry, and there is no motor traffic in either direction. On the left edge near the ego-vehicle, a man in a blue shirt carrying a beige bag walks away from the car, moving slightly out from the curb to get past a utility pole on the shoulder. Farther ahead near the center-left, another pedestrian walks in the same direction along the lane edge and could influence the vehicle's path. A person stands close to the left storefront beside bicycles, while many parked bicycles line the right curb, narrowing space.", "hazard_reasoning": "There is a man wearing a blue shirt, carrying a beige bag, and walking on the left side of the road away from the ego-car because of the utility pole on the left shoulder of the road. The pedestrian may step into the vehicle's path unexpectedly, so the driver should slow down to avoid a potential collision."}
{"id": "train_05201", "split": "train", "clip_key": "titan_clip_61_000222_movie", "source": {"subset": "titan", "scenario": "clip_61", "frame": "000222"}, "frames": ["titan_clip_61_000222_movie_t-3.jpg", "titan_clip_61_000222_movie_t-2.jpg", "titan_clip_61_000222_movie_t-1.jpg", "titan_clip_61_000222_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian crossing ahead", "environment_perception": "A dense urban two-way street with a single narrow lane per direction runs between mid-rise buildings; the pavement is smooth and traffic is light as the ego-vehicle approaches a small intersection with crosswalks. A small white van ahead in the ego lane moves slowly toward the crossing and limits the pace. To the right, a pedestrian wearing a cap steps onto the crosswalk and starts crossing toward the left, potentially entering the ego lane. On the left at the corner, a person with an umbrella waits at the curb, poised to cross. Parked bicycles and a cargo tricycle cluster along the right curb near the intersection, slightly narrowing the approach.", "hazard_reasoning": "A pedestrian wearing a cap is crossing the street at the crosswalk, to the right side. The driver should be aware of this crossing pedestrian to avoid a potential collision on the upcoming curve."}
{"id": "train_05202", "split": "train", "clip_key": "2020-0218-103119_037028_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "037028"}, "frames": ["2020-0218-103119_037028_movie_t-3.jpg", "2020-0218-103119_037028_movie_t-2.jpg", "2020-0218-103119_037028_movie_t-1.jpg", "2020-0218-103119_037028_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "be aware of the white truck and likely light change", "environment_perception": "An urban four-lane arterial with two lanes per direction and painted double center lines stretches ahead; the pavement is dry and smooth and traffic flows lightly. A white truck ahead in the ego lane continues straight under a green traffic signal and effectively sets the ego vehicle's pace. On the right, oncoming cars proceed through the junction in their lanes, separated by the center lines and not entering the ego path.", "hazard_reasoning": "There is a white truck driving in front of the ego car in the ego lane, because of the green traffic light. The green light may change soon, so the driver should be aware of the truck ahead and prepare for a possible light change."}
{"id": "train_05203", "split": "train", "clip_key": "titan_clip_1066_000354_movie", "source": {"subset": "titan", "scenario": "clip_1066", "frame": "000354"}, "frames": ["titan_clip_1066_000354_movie_t-3.jpg", "titan_clip_1066_000354_movie_t-2.jpg", "titan_clip_1066_000354_movie_t-1.jpg", "titan_clip_1066_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "The scene shows an urban back street with a single narrow unmarked lane between buildings; the pavement is smooth, traffic is light, and the road gently bends right ahead with limited sightlines. Ahead on the right, two pedestrians in white shirts walk away along the fenced sidewalk behind a low guardrail, remaining clear of the lane. On the left side near the wall, a pedestrian wearing a black shirt stands close to the edge of the roadway and may enter the vehicle's path. No vehicles approach or lead, and no traffic signals or notable signs are clearly visible.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, standing on the left side of the road. The pedestrian's proximity to the travel lane creates a risk of sudden entry into the vehicle's path, so the driver should manoeuvre carefully around them."}
{"id": "train_05204", "split": "train", "clip_key": "titan_clip_1145_000306_movie", "source": {"subset": "titan", "scenario": "clip_1145", "frame": "000306"}, "frames": ["titan_clip_1145_000306_movie_t-3.jpg", "titan_clip_1145_000306_movie_t-2.jpg", "titan_clip_1145_000306_movie_t-1.jpg", "titan_clip_1145_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban narrow two-way street with no median and worn asphalt unfolds ahead, and vehicular traffic is light with no oncoming cars visible. On the left edge close to the ego lane, a pedestrian wearing a white shirt and black pants walks away from the car along the roadside, staying near the travel path and potentially edging into it. Slightly ahead near the center of the lane, another pedestrian in a blue top walks away in the ego lane, effectively controlling the vehicle's pace. Farther ahead near a side street, a third person crosses from right to left and continues along the left side. A bus stop pole stands on the right, and two white flexible bollards mark the centerline as fixed obstacles.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and walking away from the ego car, on the left side of the road. You should yield to avoid a potential collision if the pedestrian enters the vehicle's path unexpectedly."}
{"id": "train_05205", "split": "train", "clip_key": "2020-0131-135401_009505_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "009505"}, "frames": ["2020-0131-135401_009505_movie_t-3.jpg", "2020-0131-135401_009505_movie_t-2.jpg", "2020-0131-135401_009505_movie_t-1.jpg", "2020-0131-135401_009505_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction has a solid centerline, smooth pavement, and light traffic. A white box truck is directly ahead in the ego lane and is stopped in front of the ego car, blocking the lane and constraining progress. On the left sidewalk, a pedestrian walks near the truck's rear but remains on the walkway. In the opposing lane, a white van approaches from ahead and stays in its lane. A small signalized intersection is visible farther ahead between the buildings.", "hazard_reasoning": "There is a white truck stopped in front of the ego car. This stopped truck blocks the view of the road ahead, creating a blind spot and increasing the risk of collision, so the driver should stop."}
{"id": "train_05206", "split": "train", "clip_key": "2020-0228-150133_057381_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "057381"}, "frames": ["2020-0228-150133_057381_movie_t-3.jpg", "2020-0228-150133_057381_movie_t-2.jpg", "2020-0228-150133_057381_movie_t-1.jpg", "2020-0228-150133_057381_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth pavement and a curbside guardrail carries heavy, stop-and-go traffic as vehicles queue toward a signalized intersection ahead. A gray sedan is stopped directly in front of the ego car in the ego lane because of congestion, holding the ego vehicle stationary. In the adjacent lane to the left, a white kei van alongside creeps forward, limiting room for a lane change. Farther ahead in the same direction, several vans and a beige bus wait in the line near the intersection, contributing to the backup. An overhead traffic signal is visible ahead governing the flow.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop promptly to avoid colliding with the halted vehicle ahead."}
{"id": "train_05207", "split": "train", "clip_key": "2020-0129-105040_050577_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "050577"}, "frames": ["2020-0129-105040_050577_movie_t-3.jpg", "2020-0129-105040_050577_movie_t-2.jpg", "2020-0129-105040_050577_movie_t-1.jpg", "2020-0129-105040_050577_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial under elevated expressways curves left, with two smooth same-direction lanes bordered by a wall on the left and a metal median barrier; traffic is light and flows steadily. A dark passenger car far ahead in the ego lane continues through the curve, remaining the lead vehicle without constraining speed. In the opposite carriageway to the right of the barrier, a silver minicar approaches and a white box truck travels away, both separated from the ego path. Overhead pillars cast shifting shadows and, together with the wall and curve, create a partial sightline restriction.", "hazard_reasoning": "There is a white compact hatchback stopped in front of the ego car in the ego lane, because of a red traffic light. Therefore, the driver should slow down to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_05208", "split": "train", "clip_key": "2020-0227-153144_012232_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "012232"}, "frames": ["2020-0227-153144_012232_movie_t-3.jpg", "2020-0227-153144_012232_movie_t-2.jpg", "2020-0227-153144_012232_movie_t-1.jpg", "2020-0227-153144_012232_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban arterial with two same-direction lanes approaches a signalized intersection; the pavement is smooth and traffic is light to moderate with a short queue. A black van directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle. In the adjacent right lane, a white van waits near the front of the queue alongside the ego car. On the left sidewalk, two pedestrians walk toward the intersection near the corner while remaining on the curb. The overhead traffic signal ahead shows red.", "hazard_reasoning": "There is a black van stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid collision and comply with the traffic signal."}
{"id": "train_05209", "split": "train", "clip_key": "titan_clip_1364_000324_movie", "source": {"subset": "titan", "scenario": "clip_1364", "frame": "000324"}, "frames": ["titan_clip_1364_000324_movie_t-3.jpg", "titan_clip_1364_000324_movie_t-2.jpg", "titan_clip_1364_000324_movie_t-1.jpg", "titan_clip_1364_000324_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "An urban residential two-way road with one narrow lane each direction and a solid orange centerline extends ahead; the pavement is smooth, bordered by a high wall on the left and railings along small sidewalks on the right. Traffic is light with no vehicles immediately ahead or oncoming. On the left edge ahead, a pedestrian wearing a white shirt is pushing a stroller toward the ego vehicle, walking along the shoulder close to the travel lane and potentially entering the ego path as the car approaches.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and pushing a stroller, walking at the left side of the road, toward the ego car. The pedestrian may enter the lane unexpectedly as they approach the vehicle; be aware to anticipate their movement and maintain a safe distance."}
{"id": "train_05210", "split": "train", "clip_key": "2020-0218-103119_023646_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "023646"}, "frames": ["2020-0218-103119_023646_movie_t-3.jpg", "2020-0218-103119_023646_movie_t-2.jpg", "2020-0218-103119_023646_movie_t-1.jpg", "2020-0218-103119_023646_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction is divided by orange bollards, and the pavement appears smooth; traffic is moderate with steady oncoming flow. A gray box truck is stopped directly ahead in the ego lane, blocking the path and causing the ego car to slow. Just beyond it at the left curb, an orange work vehicle sits with barricades, creating a narrow work zone that further constrains space in the lane. To the right of the bollards, an oncoming silver van proceeds toward the camera in its lane, unrelated to the blockage. A second oncoming car follows farther back in the same opposing lane.", "hazard_reasoning": "There is a gray truck stopped in the ego lane, in front of the ego car. The stationary truck blocks the travel path, so the driver must stop to avoid a collision."}
{"id": "train_05211", "split": "train", "clip_key": "2020-0205-152530_006525_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "006525"}, "frames": ["2020-0205-152530_006525_movie_t-3.jpg", "2020-0205-152530_006525_movie_t-2.jpg", "2020-0205-152530_006525_movie_t-1.jpg", "2020-0205-152530_006525_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane in each direction runs between mid-rise buildings, the pavement is clean and dry, and traffic is light. Ahead in the ego lane, a white van slows as traffic bunches farther down the road, temporarily setting the ego car's pace. In the oncoming lane farther ahead, a small car continues toward the camera at a steady speed without affecting the ego path. On the right sidewalk, two pedestrians walk along the curb, remaining clear of the roadway. No salient traffic signals or unusual hazards are visible.", "hazard_reasoning": "There is a white van slowing down in front of the ego-car, because of traffic congestion ahead. Drivers should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_05212", "split": "train", "clip_key": "titan_clip_660_000156_movie", "source": {"subset": "titan", "scenario": "clip_660", "frame": "000156"}, "frames": ["titan_clip_660_000156_movie_t-3.jpg", "titan_clip_660_000156_movie_t-2.jpg", "titan_clip_660_000156_movie_t-1.jpg", "titan_clip_660_000156_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban commercial street with a single narrow lane and no median runs between shopfronts; the pavement is smooth and vehicle traffic is light. Cones line both curbs, narrowing the usable lane. Two pedestrians wearing white shirts and carrying handbags walk ahead in the center of the lane away from the ego vehicle, occupying its path and constraining its pace. Additional pedestrians on the right edge walk along and pause by storefronts, some near the roadway and may step into the lane. A small white van farther ahead travels in the same direction at low speed, providing a distant moving cue. No traffic signals or posted speed signs are evident.", "hazard_reasoning": "There are two pedestrians wearing white shirts, carrying handbags, walking in front of the ego car, away from the ego car. The driver should stop because pedestrians are directly ahead and may cross unpredictably."}
{"id": "train_05213", "split": "train", "clip_key": "2020-0203-154554_043829_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "043829"}, "frames": ["2020-0203-154554_043829_movie_t-3.jpg", "2020-0203-154554_043829_movie_t-2.jpg", "2020-0203-154554_043829_movie_t-1.jpg", "2020-0203-154554_043829_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs beneath an elevated expressway, with two same-direction lanes bordered by a concrete barrier on the right and guardrails separating a parallel frontage road on the left. The pavement looks smooth and dry, and traffic is slow in a forming queue. A gray sedan directly ahead in the ego lane slows because of congestion ahead and therefore dictates the ego vehicle's pace. Several cars farther ahead crawl under the overpass, keeping short gaps and sustaining the slowdown. A large truck travels along the separated parallel road to the left, divided by railings and not interacting. Tall columns and the confined underpass limit sight distance toward the queue.", "hazard_reasoning": "There is a gray sedan slowing down in the ego lane because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt speed for the congestion."}
{"id": "train_05214", "split": "train", "clip_key": "2020-0131-135401_067002_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "067002"}, "frames": ["2020-0131-135401_067002_movie_t-3.jpg", "2020-0131-135401_067002_movie_t-2.jpg", "2020-0131-135401_067002_movie_t-1.jpg", "2020-0131-135401_067002_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban steel-truss bridge carries a two-lane one-way road with smooth pavement and light, steady traffic. The ego vehicle travels in the left lane while the adjacent right lane remains clear of obstructions. A white van ahead to the right continues straight at a similar speed without encroaching on the ego lane. Farther ahead in the right lane, a box truck proceeds under the truss and slightly eases pace, loosely pacing the van. A dark car well ahead in the left lane travels straight and effectively sets the ego vehicle's following distance. No signals or unusual signage are visible, and the bridge has metal railings on both sides with no apparent hazards.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05215", "split": "train", "clip_key": "titan_clip_454_000210_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_454_000210_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_454_000210_movie_t-3_augB1.jpg", "titan_clip_454_000210_movie_t-2_augB1.jpg", "titan_clip_454_000210_movie_t-1_augB1.jpg", "titan_clip_454_000210_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of the pedestrian's movement", "environment_perception": "A narrow urban two-way road runs between a stone retaining wall and a multi-story parking structure, with clean pavement and light traffic. Orange cones and a small barrier narrow the edges of the carriageway. A white van ahead in the ego lane moves slowly near the center, constraining the ego vehicle's pace. Ahead on the right edge, a pedestrian wearing a white shirt and black pants walks backward from the shoulder into the ego lane, potentially entering the ego path.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking backwards in front of the ego car, into the ego lane. The pedestrian's backward movement into the ego lane increases the risk of collision, so the driver should be aware of the pedestrian's movement."}
{"id": "train_05216", "split": "train", "clip_key": "2020-0129-105040_072206_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "072206"}, "frames": ["2020-0129-105040_072206_movie_t-3.jpg", "2020-0129-105040_072206_movie_t-2.jpg", "2020-0129-105040_072206_movie_t-1.jpg", "2020-0129-105040_072206_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "A suburban two-way road with left-hand traffic runs past houses and a wall; the asphalt is dry and smooth and traffic is light. At a signalized crossroad ahead, the overhead light shows green for the ego direction. A white van directly ahead in the ego lane starts accelerating through the junction on the green and sets the ego vehicle's pace. An oncoming car proceeds in the opposite lane past the junction without encroaching on the path. Temporary fencing and materials line the left curb but remain off the roadway.", "hazard_reasoning": "There is a white van starting to drive in the ego lane, because of the green traffic light, in front of the ego car. Driver should start moving promptly to maintain safe following distance and keep up with traffic flow."}
{"id": "train_05217", "split": "train", "clip_key": "titan_clip_853_000162_movie", "source": {"subset": "titan", "scenario": "clip_853", "frame": "000162"}, "frames": ["titan_clip_853_000162_movie_t-3.jpg", "titan_clip_853_000162_movie_t-2.jpg", "titan_clip_853_000162_movie_t-1.jpg", "titan_clip_853_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian.", "environment_perception": "An urban shopping street with a single narrow, unmarked lane curves gently right, paved with stone blocks and lined with bollards and storefronts; traffic is light. A pedestrian carrying a handbag and umbrella walks toward the ego vehicle along the left edge, close to the travel path and may step into the lane. Two pedestrians ahead near the center-left move toward us before drifting left toward the sidewalk, moderating the ego car's pace. Another pedestrian on the right walks away along the shopfront behind the bollards, remaining outside the lane. Far ahead at the cross street, a white van travels laterally across the opening without affecting the ego vehicle. A red cone stands on the left edge of the roadway.", "hazard_reasoning": "A pedestrian wearing a handbag and umbrella is walking along the left side of the road, toward the ego car. The pedestrian is approaching the vehicle's path, so the driver should carefully manoeuvre to avoid collision."}
{"id": "train_05218", "split": "train", "clip_key": "2020-0203-154554_062680_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "062680"}, "frames": ["2020-0203-154554_062680_movie_t-3.jpg", "2020-0203-154554_062680_movie_t-2.jpg", "2020-0203-154554_062680_movie_t-1.jpg", "2020-0203-154554_062680_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Be aware of the motorcycle ahead.", "environment_perception": "An urban two-way road with one lane each direction curves left beneath a pedestrian footbridge; there is no median, the pavement looks worn, and traffic is light to moderate. A black motorcycle ahead in the left ego lane rides away along the curve, staying in our path and loosely setting the pace. A white van farther ahead in the oncoming lane continues straight toward the bridge, remaining confined to its side. A silver hatchback in the near right oncoming lane passes by close to the camera while keeping its line.", "hazard_reasoning": "There is a black motorcycle driving in the left lane, away from the ego car. The driver should be aware it may change lanes or adjust speed unexpectedly around the curve, reducing available space and visibility."}
{"id": "train_05219", "split": "train", "clip_key": "2020-0214-145407_066598_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "066598"}, "frames": ["2020-0214-145407_066598_movie_t-3.jpg", "2020-0214-145407_066598_movie_t-2.jpg", "2020-0214-145407_066598_movie_t-1.jpg", "2020-0214-145407_066598_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two through lanes and a merging lane on the left runs between high-rise buildings, separated from oncoming traffic by a planted median; the surface is dry and traffic is heavy and slow. Directly ahead in the ego lane, a white sedan slows because congestion builds further forward. In the adjacent left lane, a black minivan travels nearly alongside as that lane merges right, keeping close to the ego car. Ahead-right, a large truck in the next lane creeps forward and contributes to the sluggish pace. Across the median to the right, an oncoming bus moves steadily the other way. Overhead signs indicate two straight-ahead lanes with a left-lane merge.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance in congested traffic."}
{"id": "train_05220", "split": "train", "clip_key": "2020-0220-102630_042102_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "042102"}, "frames": ["2020-0220-102630_042102_movie_t-3.jpg", "2020-0220-102630_042102_movie_t-2.jpg", "2020-0220-102630_042102_movie_t-1.jpg", "2020-0220-102630_042102_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial in left-hand traffic runs beneath an elevated expressway, the pavement smooth and traffic heavy and slow near a signalized intersection. A white box truck is stopped directly ahead in the ego lane, halted by congestion ahead and blocking the path. To the left, a small flatbed truck with a green-covered load creeps forward in the adjacent same-direction lane, pacing the queue and narrowing lateral space. Farther ahead on the right corner, several pedestrians wait by the crosswalk without stepping off the curb. A traffic light ahead shows red, holding the line of vehicles while distant opposite-direction traffic moves on the far side of the roadway.", "hazard_reasoning": "There is a white truck stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid colliding with the halted truck."}
{"id": "train_05221", "split": "train", "clip_key": "titan_clip_1167_000486_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1167_000486_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1167_000486_movie_t-3_augB1.jpg", "titan_clip_1167_000486_movie_t-2_augB1.jpg", "titan_clip_1167_000486_movie_t-1_augB1.jpg", "titan_clip_1167_000486_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping alley with a single shared lane and brick paving runs between storefronts; there is no center divider and vehicular traffic is very light amid heavy pedestrian activity. Ahead in the middle of the lane, a pedestrian carrying a handbag walks away from the ego vehicle because the sidewalk is narrow, slowing the vehicle's approach. To the right, a small group steps off the sidewalk and moves diagonally into the lane toward the left, potentially entering the ego path. Farther ahead near the left curb, a black van stands with its rear open, partially occupying the lane and constricting the available space.", "hazard_reasoning": "There is a pedestrian carrying a handbag, walking in the middle of the road, away from the ego car, because the sidewalk is narrow. The driver should slow down to avoid colliding with the pedestrian obstructing the roadway and ensure safe passage under this situation."}
{"id": "train_05222", "split": "train", "clip_key": "2020-0214-102601_027011_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "027011"}, "frames": ["2020-0214-102601_027011_movie_t-3.jpg", "2020-0214-102601_027011_movie_t-2.jpg", "2020-0214-102601_027011_movie_t-1.jpg", "2020-0214-102601_027011_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of the merging sedan", "environment_perception": "An urban divided arterial with three same-direction lanes runs between tall buildings; the pavement is smooth and traffic is moderate with steady flow. A box truck directly ahead in the ego lane travels at a constant speed and effectively sets the ego vehicle's pace. To the left, a white sedan slightly forward seeks to change lanes into the ego lane and edges rightward alongside the truck, potentially entering the ego vehicle's path. On the right, a dark hatchback in the adjacent lane near the median moves parallel to the ego vehicle, limiting available gaps. Beyond the median, opposing traffic including a bus proceeds independently and does not interact.", "hazard_reasoning": "There is a white sedan in the left lane, seeking to change lanes from the left lane to the ego lane. The driver should be cautious because the sedan's lane change could cross the path of the ego vehicle and require timely speed adjustment to avoid a collision."}
{"id": "train_05223", "split": "train", "clip_key": "titan_clip_1039_000552_movie", "source": {"subset": "titan", "scenario": "clip_1039", "frame": "000552"}, "frames": ["titan_clip_1039_000552_movie_t-3.jpg", "titan_clip_1039_000552_movie_t-2.jpg", "titan_clip_1039_000552_movie_t-1.jpg", "titan_clip_1039_000552_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one narrow lane in each direction runs under trees, the pavement smooth, and a coned-off work area lines the right edge; traffic is light. A small dark car ahead in the ego lane moves slowly past the cones, constraining the pace. On the right side, a worker in a blue shirt and hard hat stands by the cones directing traffic, close to the travel lane and potentially stepping near it. A silver utility van with ladders is parked within the coned zone on the oncoming side, narrowing that lane and creating a mild bottleneck. A no-parking sign is posted on the left.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and hard hat, standing on the right side of the road, because they are directing traffic. This directing pedestrian and cones narrow the right lane, so the driver should carefully manoeuvre around them to avoid collision."}
{"id": "train_05224", "split": "train", "clip_key": "2020-0214-145407_004713_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "004713"}, "frames": ["2020-0214-145407_004713_movie_t-3.jpg", "2020-0214-145407_004713_movie_t-2.jpg", "2020-0214-145407_004713_movie_t-1.jpg", "2020-0214-145407_004713_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of merging sedan.", "environment_perception": "An urban arterial runs under an elevated expressway with smooth pavement and light to moderate same-direction traffic approaching a signalized intersection. The approach has two through lanes with a right-side slip lane separated by a small island. Ahead of the ego car, a black sedan changes from the ego lane to the right lane, clearing the path. Slightly ahead to the left, a white wagon proceeds straight in the adjacent lane, pacing the ego without encroaching. On the far right, a white van waits near the curb by the side lane and remains stationary. Overhead traffic signals show green.", "hazard_reasoning": "There is a black Sedan in front of the ego car, changing from the ego lane to the right lane. You should be aware of its lane change because it may require you to adjust speed or position to maintain safety."}
{"id": "train_05225", "split": "train", "clip_key": "2020-0227-104226_009163_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "009163"}, "frames": ["2020-0227-104226_009163_movie_t-3.jpg", "2020-0227-104226_009163_movie_t-2.jpg", "2020-0227-104226_009163_movie_t-1.jpg", "2020-0227-104226_009163_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban arterial with three same-direction lanes and a planted median on the right separates oncoming traffic; the pavement is smooth and overall flow is heavy and slow. A white SUV directly ahead in the ego lane slows because of congestion and sets the ego vehicle's pace. In the left adjacent lane, a white van travels slightly ahead at a similar low speed, keeping close alongside and limiting space to merge. Along the left curb ahead, a cyclist inches forward beside parked vehicles near the travel lane.", "hazard_reasoning": "There is a white SUV slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_05226", "split": "train", "clip_key": "2020-0210-155354_035913_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "035913"}, "frames": ["2020-0210-155354_035913_movie_t-3.jpg", "2020-0210-155354_035913_movie_t-2.jpg", "2020-0210-155354_035913_movie_t-1.jpg", "2020-0210-155354_035913_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of lane change ahead", "environment_perception": "An urban arterial with three lanes in our direction has smooth pavement and heavy, stop-and-go flow. Directly ahead, a dark hatchback in the ego lane crawls and brakes, setting our pace. Slightly ahead of it, a black sedan in the ego lane begins shifting left into the curbside lane because of the congestion, easing across the dashed line. On the far left, a white van near the curb remains almost stationary, further clogging that lane and influencing merges. Overhead blue destination signs are visible above the roadway.", "hazard_reasoning": "There is a black sedan in the ego-lane, lane changing from the ego lane to the left lane, because of traffic congestion ahead. The driver should be aware of this lane change to anticipate potential conflicts and maintain safe following distance."}
{"id": "train_05227", "split": "train", "clip_key": "titan_clip_26_000426_movie", "source": {"subset": "titan", "scenario": "clip_26", "frame": "000426"}, "frames": ["titan_clip_26_000426_movie_t-3.jpg", "titan_clip_26_000426_movie_t-2.jpg", "titan_clip_26_000426_movie_t-1.jpg", "titan_clip_26_000426_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van", "environment_perception": "A narrow urban commercial street with no center divider shows mixed brick and patched asphalt, and traffic is light with no moving vehicles ahead. On the right ahead, a white van is parked at the curb, partly intruding into the lane and constraining the ego vehicle's path. Along the left side near the ego, several pedestrians walk beside storefronts, with one stepping toward the curb and possibly edging into the travel lane. Another person stands at the rear of the parked van on the right, close to the lane and may step out, while orange cones and a rope line mark the right edge and further narrow the passage.", "hazard_reasoning": "There is a white van parked on the right side of the road. The parked van may conceal pedestrians stepping onto the road, so the driver needs to manoeuvre around it safely."}
{"id": "train_05228", "split": "train", "clip_key": "2020-0204-103442_024485_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "024485"}, "frames": ["2020-0204-103442_024485_movie_t-3.jpg", "2020-0204-103442_024485_movie_t-2.jpg", "2020-0204-103442_024485_movie_t-1.jpg", "2020-0204-103442_024485_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban signalized intersection under an elevated roadway comes into view on a two-way road with the ego-vehicle in the left lane; the surface is dry and marked by a painted center line, and traffic is moderate. A white SUV directly ahead in the ego lane is stopped at the stop line, waiting because other vehicles are crossing the intersection, which holds the ego car. Several vehicles, including a small white van, move right-to-left across the ego path through the junction and keep flowing. A group of pedestrians waits on the far-left corner by the crosswalk without stepping into the roadway.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego-car, in the ego lane, because of other vehicles crossing ahead in the intersection. Follow the vehicle ahead to maintain a safe distance and avoid sudden braking."}
{"id": "train_05229", "split": "train", "clip_key": "2020-0226-140503_026333_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "026333"}, "frames": ["2020-0226-140503_026333_movie_t-3.jpg", "2020-0226-140503_026333_movie_t-2.jpg", "2020-0226-140503_026333_movie_t-1.jpg", "2020-0226-140503_026333_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban scene shows the ego vehicle paused at a signalized intersection on a two-way road with no median and smooth pavement; traffic on the cross street flows at a moderate pace. A pedestrian in a black jacket crosses the zebra crossing ahead from the left to the right while the signal facing the ego shows red, briefly occupying the intended right-turn path. Two white vans on the main road ahead travel rightward through the junction, continuing past the front of the ego vehicle and setting the pace of the scene. Another pedestrian waits on the right sidewalk beside the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a black jacket, crossing the street at a pedestrian crossing, from the left side to the right side, because of a red traffic light. The pedestrian is entering the vehicle's path and the driver must stop immediately to avoid a collision."}
{"id": "train_05230", "split": "train", "clip_key": "2020-0228-102841_085608_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "085608"}, "frames": ["2020-0228-102841_085608_movie_t-3.jpg", "2020-0228-102841_085608_movie_t-2.jpg", "2020-0228-102841_085608_movie_t-1.jpg", "2020-0228-102841_085608_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial with two same-direction lanes and no physical median has smooth pavement, and traffic is queued at an intersection. Directly ahead in the left ego lane, a white sedan is stopped at the stop line because the traffic light ahead is red, holding the ego car. Just beyond and slightly to the right, a small delivery scooter waits at the line in the adjacent lane, positioned near the ego vehicle's path. To the right, a white hatchback is also stopped in the right lane alongside the ego vehicle. The red signal on the mast arm is clearly visible, and a curbside work zone with cones, barriers, and a parked truck narrows the left edge of the approach.", "hazard_reasoning": "There is a white sedan stopped in front of the ego-car, in the ego lane, because of the red traffic light ahead at the intersection. The driver should follow the vehicle ahead to maintain a safe distance and avoid running the red light."}
{"id": "train_05231", "split": "train", "clip_key": "2020-0213-143552_047983_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "047983"}, "frames": ["2020-0213-143552_047983_movie_t-3.jpg", "2020-0213-143552_047983_movie_t-2.jpg", "2020-0213-143552_047983_movie_t-1.jpg", "2020-0213-143552_047983_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction is divided from oncoming traffic by a low planted median; the pavement is smooth and flow is moderate after earlier congestion. A white box truck directly ahead in the ego lane rolls forward as the queue opens and sets the ego car's pace. A yellow taxi slightly ahead to the left continues in the adjacent same-direction lane alongside. Beyond the median to the right, a silver car in the opposing lane proceeds through the junction. An overhead pedestrian bridge carries a green Route 254 Kawagoe Kaid? sign, with a traffic signal visible near the intersection.", "hazard_reasoning": "There is a white truck driving in front of the ego car in the ego lane, because traffic congestion has opened up. The driver should start moving as the signal has changed and traffic ahead has cleared."}
{"id": "train_05232", "split": "train", "clip_key": "2020-0214-145407_063490_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "063490"}, "frames": ["2020-0214-145407_063490_movie_t-3.jpg", "2020-0214-145407_063490_movie_t-2.jpg", "2020-0214-145407_063490_movie_t-1.jpg", "2020-0214-145407_063490_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and smooth pavement carries slow, dense traffic between mid-rise buildings. Directly ahead in the ego lane, a white van slows due to congestion ahead, setting the pace for the ego vehicle. In the lane to the right, a large box truck runs slightly ahead and also creeps forward, blocking a rightward merge and restricting the view down that lane. On the left-adjacent lane, a silver van just ahead rolls slowly in parallel, limiting space for a left lane change. Blue overhead guide signs are visible above the roadway.", "hazard_reasoning": "There is a white van slowing in the ego lane, because of traffic congestion ahead. The van's reduced speed signals congestion ahead requiring you to adjust your speed and maintain a safe following distance."}
{"id": "train_05233", "split": "train", "clip_key": "titan_clip_1246_000096_movie", "source": {"subset": "titan", "scenario": "clip_1246", "frame": "000096"}, "frames": ["titan_clip_1246_000096_movie_t-3.jpg", "titan_clip_1246_000096_movie_t-2.jpg", "titan_clip_1246_000096_movie_t-1.jpg", "titan_clip_1246_000096_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban two-way street with a painted center line passes storefronts on the left and a walled sidewalk with guardrails on the right; the pavement is dry and smooth, and traffic is light with no moving vehicles. A man wearing brown pants and a black T-shirt walks in the ego lane ahead, moving away near the center and constraining the ego car's pace. A white truck is parked on the right close to the camera, its body jutting slightly into the roadway and narrowing the passage. Farther ahead along the right-hand railing, a few pedestrians proceed in the same direction near the curb and may edge into the lane while passing the barriers.", "hazard_reasoning": "There is a man wearing a pair of brown pants and a black T-shirt, walking in the ego lane, in front of the ego car. Because the pedestrian is directly in the vehicle's path, the driver should carefully manoeuvre around him to avoid a collision."}
{"id": "train_05234", "split": "train", "clip_key": "titan_clip_266_000576_movie", "source": {"subset": "titan", "scenario": "clip_266", "frame": "000576"}, "frames": ["titan_clip_266_000576_movie_t-3.jpg", "titan_clip_266_000576_movie_t-2.jpg", "titan_clip_266_000576_movie_t-1.jpg", "titan_clip_266_000576_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban back street with a narrow two-way roadway and no centerline has dry, slightly worn pavement and very light traffic as the ego car proceeds on the left. Ahead in the middle of the road, a pedestrian wearing black pants, a white shirt, and a backpack walks away from the vehicle, occupying the travel path and constraining the pace. On the right curb, several vans are stopped with rear doors open while people stand and load beside them, narrowing the usable lane. No oncoming vehicles are visible. Orange cones, a scooter, and parked bicycles line the edges as minor roadside obstacles.", "hazard_reasoning": "There is a pedestrian wearing black pants, a white shirt, and carrying a backpack, walking in the middle of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a collision and maintain safe distancing."}
{"id": "train_05235", "split": "train", "clip_key": "2020-0204-150838_000339_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "000339"}, "frames": ["2020-0204-150838_000339_movie_t-3.jpg", "2020-0204-150838_000339_movie_t-2.jpg", "2020-0204-150838_000339_movie_t-1.jpg", "2020-0204-150838_000339_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with mid-rise buildings has two lanes in the ego direction separated from two oncoming lanes by double solid lines; the pavement is dry and smooth, and traffic flows at a moderate, steady pace. A white van ahead in the left curb lane travels parallel to the ego lane without encroaching, briefly aligning with our position. A small car farther ahead in the ego lane continues at similar speed and effectively sets the pace. To the right, a continuous stream of oncoming cars moves past in two lanes, remaining separated by the center lines and posing no immediate conflict. Overhead traffic signals span the roadway at a distant intersection, visible but not dictating any change in movement.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05236", "split": "train", "clip_key": "titan_clip_1332_000240_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1332_000240_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1332_000240_movie_t-3_augB1.jpg", "titan_clip_1332_000240_movie_t-2_augB1.jpg", "titan_clip_1332_000240_movie_t-1_augB1.jpg", "titan_clip_1332_000240_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop to yield to the pedestrian.", "environment_perception": "A narrow urban street under an elevated structure has a single shared lane with no divider, block-paved and dry, and traffic is light with mainly pedestrians and a cyclist. No oncoming vehicles are visible. A man wearing a white shirt and black pants crosses mid-block ahead toward the ego car, stepping into the middle of the lane and potentially entering its path. A cyclist emerges from the right-side path and rides leftward across the zebra crossing, possibly cutting in front of the lane. A covered flatbed truck stands along the left edge near the ego vehicle, reducing space and partially obstructing the view ahead.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, crossing the street in the middle of the road, towards the ego car. The pedestrian is entering the path of travel, so the driver must stop to avoid collision."}
{"id": "train_05237", "split": "train", "clip_key": "2020-0217-144444_003158_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "003158"}, "frames": ["2020-0217-144444_003158_movie_t-3.jpg", "2020-0217-144444_003158_movie_t-2.jpg", "2020-0217-144444_003158_movie_t-1.jpg", "2020-0217-144444_003158_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with dry, smooth pavement runs between mid-rise buildings, with a curb and guardrail on the left and no visible oncoming lanes; traffic is heavy and queued. A yellow sedan directly ahead in the ego lane is stopped at a red light, holding the ego vehicle. In the adjacent right lane, a dark minivan slightly ahead creeps forward with the queue while staying in its lane. Farther ahead in the same direction, a small truck waits among the line of vehicles, contributing to the slow flow. An overhead gantry and the signal ahead frame the scene as the queue remains stationary.", "hazard_reasoning": "There is a yellow Sedan stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver should stop because the vehicle ahead is halted at a red light in the same lane."}
{"id": "train_05238", "split": "train", "clip_key": "titan_clip_281_000534_movie", "source": {"subset": "titan", "scenario": "clip_281", "frame": "000534"}, "frames": ["titan_clip_281_000534_movie_t-3.jpg", "titan_clip_281_000534_movie_t-2.jpg", "titan_clip_281_000534_movie_t-1.jpg", "titan_clip_281_000534_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with no median and worn but dry pavement shows light traffic. Ahead in the ego lane, a white van cuts into the lane from the right curb and merges forward, occupying the path and constraining the ego vehicle's pace. On the right sidewalk beside the van, a man stands near the curb next to parked bicycles, remaining outside the roadway. No oncoming vehicles are visible in the distance, and there are no salient signals or posted speeds. Shopfront items and a freestanding sign near the left edge slightly narrow the margins.", "hazard_reasoning": "There is a white van cutting in to the ego lane from the right side of the road. The vehicle's unexpected merge poses a collision risk, so the driver should slow down to maintain safe spacing."}
{"id": "train_05239", "split": "train", "clip_key": "2020-0127-132751_069822_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "069822"}, "frames": ["2020-0127-132751_069822_movie_t-3.jpg", "2020-0127-132751_069822_movie_t-2.jpg", "2020-0127-132751_069822_movie_t-1.jpg", "2020-0127-132751_069822_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban bridge approach with three same-direction lanes on red-painted, well?arked pavement is divided from oncoming traffic by a guardrail, and traffic is heavy and queued. A white minivan directly ahead in the center lane is stopped for the red signal, holding the ego vehicle. A large box truck ahead in the left lane also waits, obscuring the view into the truss bridge. Another box truck slightly ahead in the right lane is stationary as part of the same queue, discouraging lane changes. A traffic light over the approach shows red, and oncoming vehicles are visible on the separated carriageway to the right.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car, because of a red traffic light. The driver must stop to avoid a rear-end collision and comply with the traffic signal."}
{"id": "train_05240", "split": "train", "clip_key": "titan_clip_950_000126_movie", "source": {"subset": "titan", "scenario": "clip_950", "frame": "000126"}, "frames": ["titan_clip_950_000126_movie_t-3.jpg", "titan_clip_950_000126_movie_t-2.jpg", "titan_clip_950_000126_movie_t-1.jpg", "titan_clip_950_000126_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban residential two-way road with one lane each direction runs straight ahead, the pavement smooth with a manhole cover, and traffic remains light. A white truck is stopped ahead in the ego lane on the left, surrounded by orange cones and parked because of an emergency, partially blocking the lane and constraining the ego vehicle's path. A white van stands along the near left curb encroaching slightly into the ego lane, further narrowing the passage toward the truck. No oncoming vehicles are visible in the opposite lane.", "hazard_reasoning": "There is a white truck parked on the left side of the road, in the ego lane, because of emergency. This vehicle blocks the driving lane and requires the driver to manoeuvre carefully to avoid collision."}
{"id": "train_05241", "split": "train", "clip_key": "titan_clip_1272_000582_movie", "source": {"subset": "titan", "scenario": "clip_1272", "frame": "000582"}, "frames": ["titan_clip_1272_000582_movie_t-3.jpg", "titan_clip_1272_000582_movie_t-2.jpg", "titan_clip_1272_000582_movie_t-1.jpg", "titan_clip_1272_000582_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow two-way urban backstreet without dividers or sidewalks runs straight between buildings; the worn pavement carries very light vehicle traffic while many pedestrians share the lane. Ahead in the ego lane, a pedestrian in a striped shirt and gray pants carrying a white grocery bag walks away from the vehicle along the roadway where no sidewalk exists, potentially constraining its pace. On the left near the camera, two men walk toward the ego vehicle along the edge of the lane and may drift into its path. Farther ahead near the center, a woman walks toward the camera within the lane, converging with the ego path. A car remains stationary at a garage entrance on the right.", "hazard_reasoning": "There is a pedestrian wearing a stripped shirt, gray pants, and carrying a white grocery bag, walking in front of the away from the ego car, because there is no sidewalk. The driver should carefully manoeuvre to avoid the pedestrian walking on the roadway."}
{"id": "train_05242", "split": "train", "clip_key": "2020-0213-143552_042730_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "042730"}, "frames": ["2020-0213-143552_042730_movie_t-3.jpg", "2020-0213-143552_042730_movie_t-2.jpg", "2020-0213-143552_042730_movie_t-1.jpg", "2020-0213-143552_042730_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane one-way road runs under an elevated structure, with smooth pavement and concrete barriers; traffic is light to moderate and generally steady. A white box truck directly ahead in the ego lane slows and dictates the ego vehicle's pace. A white car slightly farther ahead in the left lane proceeds straight at a steady speed, remaining in its lane without affecting the ego path. A delivery scooter on the left advances along the left lane near the lane line, moving ahead past the ego vehicle and approaching the truck's left side while staying separate from the ego lane. Overhead directional signboards and a side ramp bounded by walls appear on the right.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The slowing truck may reduce the gap to the ego-vehicle and require the driver to brake, so the driver should slow down to maintain a safe following distance."}
{"id": "train_05243", "split": "train", "clip_key": "titan_clip_388_000402_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_388_000402_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_388_000402_movie_t-3_augB1.jpg", "titan_clip_388_000402_movie_t-2_augB1.jpg", "titan_clip_388_000402_movie_t-1_augB1.jpg", "titan_clip_388_000402_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian.", "environment_perception": "An urban shopping street with a single narrow shared lane and no median, paved with interlocking blocks; storefronts and signs line both sides. Traffic is light and the ego vehicle proceeds straight at low speed. A small white mini-truck is ahead in the same lane moving slowly, setting the pace. On the right side by the shops, a pedestrian wearing a black shirt pushes a trolley toward the ego vehicle and edges into the lane, potentially entering the path. A scooter and other small carts are stopped along the left curb, reducing clearance.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, pushing a trolley on the right side of the road, towards the ego car. The pedestrian may step or sway into the travel lane and obstruct the vehicle's path, so the driver should carefully manoeuvre around them."}
{"id": "train_05244", "split": "train", "clip_key": "2020-0220-151845_041192_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "041192"}, "frames": ["2020-0220-151845_041192_movie_t-3.jpg", "2020-0220-151845_041192_movie_t-2.jpg", "2020-0220-151845_041192_movie_t-1.jpg", "2020-0220-151845_041192_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road runs under an elevated expressway with two same-direction lanes and a concrete median on the left; the pavement is smooth and traffic is heavy in stop-and-go flow. Directly ahead in the ego lane, a red flatbed truck with a yellow-covered load slows because of congestion ahead, controlling the ego vehicle's pace. In the adjacent right lane, a silver van creeps forward alongside and then edges ahead, continuing straight without merging. Farther right, a black sedan moves past slowly in the outer lane as the queue inches forward. Concrete columns from the structure create a confined corridor but no additional obstacles appear.", "hazard_reasoning": "There is a red truck slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. Slow down to maintain a safe following distance due to the truck's reduced speed and limited visibility."}
{"id": "train_05245", "split": "train", "clip_key": "2020-0206-142535_032548_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "032548"}, "frames": ["2020-0206-142535_032548_movie_t-3.jpg", "2020-0206-142535_032548_movie_t-2.jpg", "2020-0206-142535_032548_movie_t-1.jpg", "2020-0206-142535_032548_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs between mid-rise buildings, with dry pavement and painted double white center lines but no physical median; traffic is light and the ego lane ahead is open as flow continues smoothly. On the right side, two oncoming white vans advance in their lanes at a steady speed, staying clear of the center lines and posing no immediate interaction. Far ahead in the ego direction, a small queue of cars proceeds toward an overhead structure and eases slightly, setting the distant pace. Near the center of the roadway ahead, orange barrels and a small barricade stand by the lane divider, indicating a minor work area that narrows space near the middle.", "hazard_reasoning": "The road is clear with moderate traffic flow and no visible obstacles, so the driver can maintain current speed safely."}
{"id": "train_05246", "split": "train", "clip_key": "2020-0212-102546_040648_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "040648"}, "frames": ["2020-0212-102546_040648_movie_t-3.jpg", "2020-0212-102546_040648_movie_t-2.jpg", "2020-0212-102546_040648_movie_t-1.jpg", "2020-0212-102546_040648_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, the pavement smooth and traffic moderate as vehicles queue at a signalized intersection; a narrow raised divider lines the right edge. A gray van directly ahead in the ego lane is stopped as the overhead traffic light turns yellow, holding the ego car at the line. To the left front, a white SUV slows and edges right alongside the van, potentially merging into the ego lane and constraining the available gap. Very close on the ego car's left, a purple truck creeps forward in the adjacent lane, reducing lateral clearance near the intersection.", "hazard_reasoning": "There is a gray van stopped in the ego lane, in front of the ego car, because of a yellow traffic light. You should stop to avoid a collision when the leading vehicle halts under the signal change."}
{"id": "train_05247", "split": "train", "clip_key": "2020-0131-103016_055175_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "055175"}, "frames": ["2020-0131-103016_055175_movie_t-3.jpg", "2020-0131-103016_055175_movie_t-2.jpg", "2020-0131-103016_055175_movie_t-1.jpg", "2020-0131-103016_055175_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial approaches a split beneath an elevated structure, with striped separation zones and clean pavement; traffic is moderate and steady. A black van in the left lane slightly ahead moves right to cut into the ego lane, tightening the space ahead. A white minivan directly ahead in the ego lane continues straight at a moderate speed, setting the ego vehicle’s pace. A red cargo truck ahead-right travels in the adjacent diverging lane and slows near the gore, remaining outside the ego path. Overhead blue guide signs indicate lane directions to several districts, and signal heads are visible ahead. Orange mesh barriers mark the right-side separation area.", "hazard_reasoning": "There is a black van on the left lane, cutting into the ego lane. The van's merging behavior could encroach on your path, so you should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_05248", "split": "train", "clip_key": "2020-0228-150133_019536_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-150133_019536_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-150133_019536_movie_t-3_augB1.jpg", "2020-0228-150133_019536_movie_t-2_augB1.jpg", "2020-0228-150133_019536_movie_t-1_augB1.jpg", "2020-0228-150133_019536_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one narrow lane each way is marked by a solid yellow centerline; the pavement is dry and traffic in the ego direction is slow and queued. The ego travels in the left-side lane past shops and a guardrail as the road bends slightly right, and no oncoming vehicles are visible. A gray van directly ahead in the ego lane slows to a crawl because of congestion in front, keeping the ego car stuck behind it. Farther ahead in the same lane, a large bus creeps or stands, forming the head of the queue and setting the pace.", "hazard_reasoning": "There is a gray van slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should slow down to maintain a safe following distance under these conditions."}
{"id": "train_05249", "split": "train", "clip_key": "2020-0204-103442_025658_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "025658"}, "frames": ["2020-0204-103442_025658_movie_t-3.jpg", "2020-0204-103442_025658_movie_t-2.jpg", "2020-0204-103442_025658_movie_t-1.jpg", "2020-0204-103442_025658_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, curving gently right on clean pavement with a guardrail along the right edge; traffic is moderate and moving smoothly. A white SUV directly ahead in the center lane continues at a steady speed along our path, maintaining a comfortable gap. To the left, a small white truck travels slightly ahead in the adjacent lane at a comparable pace, limiting an immediate move left. On the right, several cars occupy the rightmost lane and slow as that lane leads to an exit, staying outside the ego lane. Overhead green guide signs show E20 with destinations, and a gantry-mounted electronic message board spans the road.", "hazard_reasoning": "No immediate hazards are detected; maintain awareness while driving."}
{"id": "train_05250", "split": "train", "clip_key": "titan_clip_735_000192_movie", "source": {"subset": "titan", "scenario": "clip_735", "frame": "000192"}, "frames": ["titan_clip_735_000192_movie_t-3.jpg", "titan_clip_735_000192_movie_t-2.jpg", "titan_clip_735_000192_movie_t-1.jpg", "titan_clip_735_000192_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban residential two-way street is narrow with smooth asphalt and no median, and traffic is light with no moving vehicles ahead or oncoming. A cyclist emerges from a hidden side intersection on the right and rides toward the ego lane to merge, potentially entering the path. A blue hatchback sits in a right-side driveway with its nose close to the roadway, and other parked vehicles along the left verge further narrow the corridor. No signals or posted speed signs are clearly visible.", "hazard_reasoning": "There's a cyclist cycling from a hidden intersection on the right side of the road towards the ego lane because they are trying to merge. The driver should slow down to allow safe merging and avoid collision with the bicyclist."}
{"id": "train_05251", "split": "train", "clip_key": "titan_clip_1024_000480_movie", "source": {"subset": "titan", "scenario": "clip_1024", "frame": "000480"}, "frames": ["titan_clip_1024_000480_movie_t-3.jpg", "titan_clip_1024_000480_movie_t-2.jpg", "titan_clip_1024_000480_movie_t-1.jpg", "titan_clip_1024_000480_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban back street with a single narrow two-way lane and no centerline has smooth pavement, no median, and light traffic. Ahead on the left edge, a pedestrian wearing a blue shirt and carrying a handbag walks away from the ego along the roadway and may step into the travel path as the lane is shared. A white minivan is parked along the left side near the ego, narrowing the passage. No moving vehicles are immediately ahead or oncoming in view. A roadside utility pole and dense shrubs sit close to the right edge, further constricting the corridor.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, carrying a handbag, walking on the left side of the road, away from the ego car. The driver should be aware because the pedestrian could step into the road unexpectedly in the narrowed section."}
{"id": "train_05252", "split": "train", "clip_key": "titan_clip_31_000348_movie", "source": {"subset": "titan", "scenario": "clip_31", "frame": "000348"}, "frames": ["titan_clip_31_000348_movie_t-3.jpg", "titan_clip_31_000348_movie_t-2.jpg", "titan_clip_31_000348_movie_t-1.jpg", "titan_clip_31_000348_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban two-way street without a centerline runs between shops and apartments, the pavement smooth and traffic light as the ego car proceeds along the left side with no oncoming vehicles. A small green flatbed truck ahead in the same direction moves slowly near the middle, mildly constraining the ego vehicle's pace. On the right edge, several pedestrians walk toward the ego car along the green shoulder, with the lead walker close to the travel lane and liable to step into it. At the left curb, a worker beside a parked delivery truck unloads crates and stands near the roadway, adding roadside activity close to the ego path.", "hazard_reasoning": "There is a pedestrian walking on the right side of the road, toward the ego car. The pedestrian may step into the lane unexpectedly, so the driver should be aware of them to prevent a collision."}
{"id": "train_05253", "split": "train", "clip_key": "titan_clip_14_000312_movie", "source": {"subset": "titan", "scenario": "clip_14", "frame": "000312"}, "frames": ["titan_clip_14_000312_movie_t-3.jpg", "titan_clip_14_000312_movie_t-2.jpg", "titan_clip_14_000312_movie_t-1.jpg", "titan_clip_14_000312_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow shared lane runs between tall shops; the brick pavement is smooth and vehicle traffic is very light while pedestrians are common. Ahead in the middle distance, a pedestrian with gray hair in a blue T-shirt and black pants crosses from the left to the right in the middle of the road, briefly occupying the ego lane. Two pedestrians walk away along the center of the lane ahead, effectively setting the ego vehicle's pace. Farther ahead, several oncoming pedestrians approach along the same lane, reducing available space. A recessed building entrance on the right is marked by cones and a signboard near the curb, and a few bicycles are parked by storefronts on the left.", "hazard_reasoning": "There is a pedestrian with gray hair, wearing a blue T-shirt and black pants and crossing the street in the middle of the road, from the left side to the right side. The driver should slow down to avoid a potential collision with the crossing pedestrian."}
{"id": "train_05254", "split": "train", "clip_key": "2020-0203-114632_048240_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "048240"}, "frames": ["2020-0203-114632_048240_movie_t-3.jpg", "2020-0203-114632_048240_movie_t-2.jpg", "2020-0203-114632_048240_movie_t-1.jpg", "2020-0203-114632_048240_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane in each direction runs under an elevated structure; the pavement is dry and smooth, and traffic is light with no physical median. A white van ahead in the ego lane pulls away steadily, continuing straight and lightly constraining the ego vehicle's pace. On the left near the curb by storefronts, a cyclist moves slowly along the road edge and could enter the ego lane near the junction. On the right, a white truck is stopped in a driveway beside the roadway, waiting and not yet merging, while the oncoming lane to the right remains mostly clear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05255", "split": "train", "clip_key": "2020-0226-101332_008255_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "008255"}, "frames": ["2020-0226-101332_008255_movie_t-3.jpg", "2020-0226-101332_008255_movie_t-2.jpg", "2020-0226-101332_008255_movie_t-1.jpg", "2020-0226-101332_008255_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the turning vehicle", "environment_perception": "An urban two-way single-lane road with a painted centerline and roadside guardrails stretches toward a nearby intersection; the pavement looks dry and smooth and traffic is moderate and flowing steadily. A dark car ahead in the ego lane continues straight toward the junction at a steady pace, setting the ego vehicle's speed. Ahead-right on the oncoming side, a white car turns right at the intersection, moving across the junction in front of the ego car. Farther right, another dark oncoming vehicle proceeds straight past the intersection without turning. Pedestrians wait on the left sidewalk near a bus stop, remaining clear of the roadway.", "hazard_reasoning": "There is a white car turning on the right side of the intersection in front of the ego-car. The white car's turn may cross the ego-vehicle's path, so the driver should yield to avoid a collision under this situation."}
{"id": "train_05256", "split": "train", "clip_key": "2020-0226-101332_075322_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "075322"}, "frames": ["2020-0226-101332_075322_movie_t-3.jpg", "2020-0226-101332_075322_movie_t-2.jpg", "2020-0226-101332_075322_movie_t-1.jpg", "2020-0226-101332_075322_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three lanes in the ego direction and a central median fence on the right has smooth, dry pavement and heavy traffic queuing at an intersection. A black sedan directly ahead in the ego lane is stopped at the line for the red traffic light, holding the ego vehicle. Vehicles in the adjacent lanes to the left and right, including a white van and several cars, are also queued and stationary, keeping pace with the signal and confining the ego within its lane. A pedestrian ahead uses the crosswalk, moving right to left in front of the waiting traffic.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, because of the red traffic light. Driver should stop to avoid a collision, as the red signal has halted the vehicle ahead."}
{"id": "train_05257", "split": "train", "clip_key": "titan_clip_970_000558_movie", "source": {"subset": "titan", "scenario": "clip_970", "frame": "000558"}, "frames": ["titan_clip_970_000558_movie_t-3.jpg", "titan_clip_970_000558_movie_t-2.jpg", "titan_clip_970_000558_movie_t-1.jpg", "titan_clip_970_000558_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway and green edge lanes runs between shops; the pavement is smooth and traffic is very light with no oncoming vehicles visible. Ahead in the center of the lane, a pedestrian in a white shirt and black pants walks away from the ego down the middle of the road, occupying the path. Near the left curb just ahead, a person with a bicycle waits by a storefront, close to the lane and may enter it. Farther ahead near the next block, several pedestrians gather near the road edges without entering the lane. On the right, orange cones and a sign mark a parking entrance, slightly narrowing the shoulder.", "hazard_reasoning": "There is a pedestrian in a white shirt and black pants, walking down the middle of the road away from the ego-car. The driver should carefully manoeuvre around the pedestrian to avoid a potential collision."}
{"id": "train_05258", "split": "train", "clip_key": "2020-0207-101955_028240_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "028240"}, "frames": ["2020-0207-101955_028240_movie_t-3.jpg", "2020-0207-101955_028240_movie_t-2.jpg", "2020-0207-101955_028240_movie_t-1.jpg", "2020-0207-101955_028240_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with painted lanes and no median approaches a signalized intersection; the pavement is smooth and traffic is moderate under a green light. The ego vehicle travels in the left-side lanes typical of Japan, with oncoming lanes visible to the right beyond the junction. A small green covered truck ahead in the ego lane slows as it nears the crosswalk because a truck further ahead is slowing, briefly setting the ego car's pace. In the adjacent right same-direction lane, a blue truck slightly ahead also eases off while remaining in lane. Oncoming cars move through their opposite lanes without interacting. Numerous pedestrians wait behind railings on both sidewalks near the crosswalk and do not enter the roadway.", "hazard_reasoning": "There is a green truck slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The driver should slow down to avoid a potential rear-end collision with the slowing truck."}
{"id": "train_05259", "split": "train", "clip_key": "2020-0221-115122_006293_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "006293"}, "frames": ["2020-0221-115122_006293_movie_t-3.jpg", "2020-0221-115122_006293_movie_t-2.jpg", "2020-0221-115122_006293_movie_t-1.jpg", "2020-0221-115122_006293_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A dense urban boulevard with multiple same-direction lanes runs between tall office buildings; the dry pavement appears smooth, and traffic is heavy and largely stop-and-go. A silver sedan is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle at a standstill. In the adjacent right lane, a white hatchback inches forward beside the ego car, keeping a close lateral gap and moving parallel in the queue. On the left edge near the curb, a pedestrian walks along the roadway margin close to the ego lane, remaining near the travel path. Parked and standing vehicles line the left curb, slightly narrowing usable space.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The stopped sedan indicates congestion ahead, so the driver must stop promptly to avoid a collision."}
{"id": "train_05260", "split": "train", "clip_key": "titan_clip_530_000090_movie", "source": {"subset": "titan", "scenario": "clip_530", "frame": "000090"}, "frames": ["titan_clip_530_000090_movie_t-3.jpg", "titan_clip_530_000090_movie_t-2.jpg", "titan_clip_530_000090_movie_t-1.jpg", "titan_clip_530_000090_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked sedan", "environment_perception": "A narrow urban two-way street with single lanes and green-edged shoulders has smooth pavement and very light traffic, with no median or centerline visible. On the right ahead, a black sedan is parked at the curb as its driver boards, facing toward the ego vehicle and occupying the edge of the ego lane. On the left near the camera, a silver minivan stands parked nose-out, trimming the shoulder but leaving the lane clear. Farther ahead on the left, a white van remains stopped at a building driveway. Bicycles are parked along the right storefront, slightly narrowing the edge, and no salient traffic signals or speed signs appear.", "hazard_reasoning": "There is a black sedan parked on the right side of the road, towards the ego car, because the driver is boarding it. The parked sedan with a boarding driver may suddenly open its door or pull out, so the driver should manoeuvre carefully around it."}
{"id": "train_05261", "split": "train", "clip_key": "2020-0228-102841_068992_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_068992_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_068992_movie_t-3_augB1.jpg", "2020-0228-102841_068992_movie_t-2_augB1.jpg", "2020-0228-102841_068992_movie_t-1_augB1.jpg", "2020-0228-102841_068992_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street runs between buildings with no median, dry pavement, and railings and cones along the left; traffic is light with several parked vehicles. Two pedestrians carrying backpacks cross directly ahead from the left to the right side, moving through the ego lane and constraining its pace. On the right sidewalk a pedestrian walks along the curb, remaining off the roadway. A white van stands ahead near the left edge while more parked cars line the right, narrowing the available passage.", "hazard_reasoning": "There are two pedestrians carrying backpacks, crossing the street in front of the ego car to the right side. The driver should slow down because the pedestrians are crossing directly in the vehicle's path."}
{"id": "train_05262", "split": "train", "clip_key": "2020-0212-102546_080048_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "080048"}, "frames": ["2020-0212-102546_080048_movie_t-3.jpg", "2020-0212-102546_080048_movie_t-2.jpg", "2020-0212-102546_080048_movie_t-1.jpg", "2020-0212-102546_080048_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the white truck changing lanes", "environment_perception": "An urban expressway with two same-direction lanes curves right, bordered by a wall and barrier on the right and a vegetated embankment on the left; the pavement is smooth, with light flow in the ego lane and heavy, slow traffic in the right lane. A small white flatbed truck ahead in the ego lane signals and starts moving to the right, changing lanes because a larger truck ahead slows on the road. To the right, a black sedan and several trucks creep in a queue along the barrier, limiting gaps for the maneuver. Farther ahead, traffic continues under blue overhead guide signs.", "hazard_reasoning": "There is a white truck lane changing from the ego lane to the right lane because the truck is slowing ahead on the road. You should be cautious of its lane change as it may affect your trajectory."}
{"id": "train_05263", "split": "train", "clip_key": "2020-0210-101957_057703_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "057703"}, "frames": ["2020-0210-101957_057703_movie_t-3.jpg", "2020-0210-101957_057703_movie_t-2.jpg", "2020-0210-101957_057703_movie_t-1.jpg", "2020-0210-101957_057703_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs through a built-up area with two same-direction lanes, dry pavement, and heavy stop-and-go traffic beneath a pedestrian footbridge. A white sedan is stopped immediately ahead in the ego lane because of congestion, holding the ego vehicle in place. In the adjacent right lane, a small white truck just ahead creeps forward, limiting any opportunity for the ego vehicle to merge. Farther ahead in the same lane, a large blue construction truck also sits in the queue, reinforcing the slowdown. No unusual signs or hazards are visible beyond the general traffic jam.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The ego-vehicle is following closely and may collide if not stopping promptly, so the driver should stop to avoid a rear-end collision."}
{"id": "train_05264", "split": "train", "clip_key": "2020-0213-143552_023395_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "023395"}, "frames": ["2020-0213-143552_023395_movie_t-3.jpg", "2020-0213-143552_023395_movie_t-2.jpg", "2020-0213-143552_023395_movie_t-1.jpg", "2020-0213-143552_023395_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban multi-lane arterial with smooth pavement and a painted chevron divider to the right stretches ahead under clear daylight, and traffic flows at a moderate, steady pace. A black motorcycle just ahead on the left veers right and cuts into the ego lane, moving in front and likely constraining the car's pace. A covered box truck sits directly ahead in the ego lane traveling slowly, further limiting progress. A small white car in the lane to the left continues straight alongside without merging. An overhead sign shows straight arrows for the lanes, and a roadside P sign points to parking to the right. Pedestrians remain on the sidewalks behind railings.", "hazard_reasoning": "There is a black motorcycle cutting into the ego lane, from the left lane. The motorcycle's sudden lane change poses a collision risk, so the driver should slow down to maintain a safe following distance under this situation."}
{"id": "train_05265", "split": "train", "clip_key": "2020-0217-110854_002727_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "002727"}, "frames": ["2020-0217-110854_002727_movie_t-3.jpg", "2020-0217-110854_002727_movie_t-2.jpg", "2020-0217-110854_002727_movie_t-1.jpg", "2020-0217-110854_002727_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with a single lane each way and no divider has wet pavement and heavy, mostly stopped traffic in the ego direction. A red motorcycle directly ahead in the ego lane is stopped because of congestion and sits in front of the ego car. Just beyond it, a white sedan in the same lane waits in the queue and constrains the ego vehicle. Farther ahead, a large refuse truck stands in lane with several vehicles stacked behind it. On the left, a van with its side door open is stopped at the curb and partly encroaches into the lane, narrowing the passage.", "hazard_reasoning": "There is a red motorcycle stopped in the ego lane because of traffic congestion ahead, in front of the ego car. Because the motorcycle has halted due to congestion, the driver needs to stop promptly to avoid a rear-end collision."}
{"id": "train_05266", "split": "train", "clip_key": "2020-0228-102841_003895_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "003895"}, "frames": ["2020-0228-102841_003895_movie_t-3.jpg", "2020-0228-102841_003895_movie_t-2.jpg", "2020-0228-102841_003895_movie_t-1.jpg", "2020-0228-102841_003895_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of lane barrier ahead", "environment_perception": "An urban scene with high-rises and a railway, the ego travels on a single-lane road that curves left on smooth asphalt with light traffic and no vehicles immediately ahead or oncoming. Ahead on the left, a white box truck is stopped at the curb, close to the lane but not intruding, slightly constraining the view around the bend. On the left sidewalk near the truck, a pedestrian walks along the fence, remaining off the roadway and posing no immediate interaction. On the right side, a continuous lane barrier lines the edge and separates a blue shoulder area, guiding the lane as it bends.", "hazard_reasoning": "There is a lane barrier on the right side. Drivers should be aware of the lane barrier to maintain a safe lane position and prevent collisions."}
{"id": "train_05267", "split": "train", "clip_key": "2020-0207-151349_071291_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "071291"}, "frames": ["2020-0207-151349_071291_movie_t-3.jpg", "2020-0207-151349_071291_movie_t-2.jpg", "2020-0207-151349_071291_movie_t-1.jpg", "2020-0207-151349_071291_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial runs under an elevated structure with smooth pavement and a concrete barrier on the right, and traffic in the ego direction is heavy and mostly stopped. A black van directly ahead in the ego lane is stationary because of congestion, holding the ego vehicle at a standstill. Slightly ahead to the left, a white bus is stopped in the adjacent lane near the curb and may merge when traffic restarts, making it relevant to the ego path. A lower parallel road beyond the barrier carries separate traffic that does not interact. Cones line the left curb, narrowing space around the bus.", "hazard_reasoning": "There is a black van stopped in front of the ego car in the ego lane, because of traffic congestion. Driver should stop to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_05268", "split": "train", "clip_key": "2020-0220-102630_113200_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "113200"}, "frames": ["2020-0220-102630_113200_movie_t-3.jpg", "2020-0220-102630_113200_movie_t-2.jpg", "2020-0220-102630_113200_movie_t-1.jpg", "2020-0220-102630_113200_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "be aware of slowing vehicle ahead", "environment_perception": "An urban two-way road with one lane each direction runs between mid-rise buildings, divided by a solid yellow center line; the pavement is smooth and traffic is light. Ahead in the ego lane, a dark sedan proceeds at a steady pace along a gentle rightward bend, effectively setting the speed. At the left side of a side-street intersection, a white hatchback is slowing by the curb and edging forward, relevant because it could enter the ego lane. In the opposite lane to the right, an oncoming car approaches around the curve while staying in its lane.", "hazard_reasoning": "There is a white hatchback slowing at the left side of the intersection. The driver should be aware of this deceleration as the hatchback may brake more sharply, requiring timely speed adjustment to maintain a safe following distance."}
{"id": "train_05269", "split": "train", "clip_key": "2020-0203-114632_010988_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "010988"}, "frames": ["2020-0203-114632_010988_movie_t-3.jpg", "2020-0203-114632_010988_movie_t-2.jpg", "2020-0203-114632_010988_movie_t-1.jpg", "2020-0203-114632_010988_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban road between mid-rise apartments curves left, bordered by guardrails, with dry, slightly worn pavement and no visible congestion. Ahead, a work zone blocks the middle of the roadway with drums and fencing, narrowing the passage and forcing traffic to veer left. Temporary boards with arrows stand before the barricade, and diagonal chevrons on the right mark a closed section. No pedestrians, cyclists, or moving vehicles are near the ego vehicle, and no traffic signals or speed signs are clearly visible.", "hazard_reasoning": "The construction barrels and high embankment signboard indicate an active work zone that may narrow the roadway and create obstacles, so the driver should remain alert and adjust speed accordingly."}
{"id": "train_05270", "split": "train", "clip_key": "titan_clip_632_000300_movie", "source": {"subset": "titan", "scenario": "clip_632", "frame": "000300"}, "frames": ["titan_clip_632_000300_movie_t-3.jpg", "titan_clip_632_000300_movie_t-2.jpg", "titan_clip_632_000300_movie_t-1.jpg", "titan_clip_632_000300_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist approaching from right lane", "environment_perception": "An urban residential street with a single narrow two-way lane and a green-marked bicycle strip on the right comes into view; the pavement is smooth and traffic is light. A cyclist wearing a blue shirt and black pants rides toward the ego car along the right-side green strip, approaching in the opposing direction and narrowing the available space in the lane. Two pedestrians on the right edge, near the fence, walk beside the bicycle-one toward the ego vehicle and one away-constraining the cyclist's line and reducing clearance to the ego path. Additional pedestrians proceed along the left side by the shopfronts and steps, staying out of the lane. A convex safety mirror stands on the right.", "hazard_reasoning": "A cyclist wearing a blue shirt and black pants is cycling along the right side of the lane, toward the ego car. The cyclist is moving toward the vehicle on the right side, so the driver should be aware to avoid a potential collision."}
{"id": "train_05271", "split": "train", "clip_key": "2020-0203-154554_038686_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "038686"}, "frames": ["2020-0203-154554_038686_movie_t-3.jpg", "2020-0203-154554_038686_movie_t-2.jpg", "2020-0203-154554_038686_movie_t-1.jpg", "2020-0203-154554_038686_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated roadway with two same-direction lanes runs under an overhead structure, bounded by concrete barriers and smooth pavement; traffic moves slowly in a short queue. A white box truck ahead in the ego lane slows because of congestion farther up the road, constraining the ego vehicle. Immediately in front of it, a low flatbed trailer in the same lane rolls slowly and stays centered, further limiting pace. In the adjacent right lane, a white van slightly ahead continues slowly alongside the ego vehicle. A circular 50 speed limit sign is visible on the left.", "hazard_reasoning": "There is a white truck slowing in the ego lane because of traffic congestion ahead on the road. Slow down to match the reduced speed of the congested traffic and avoid a collision."}
{"id": "train_05272", "split": "train", "clip_key": "2020-0205-103411_000659_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "000659"}, "frames": ["2020-0205-103411_000659_movie_t-3.jpg", "2020-0205-103411_000659_movie_t-2.jpg", "2020-0205-103411_000659_movie_t-1.jpg", "2020-0205-103411_000659_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "An urban intersection on a two-way road with a single left-hand lane in the ego direction curves right beside construction hoarding and cones; the pavement is smooth and traffic is moderate but briefly halted. A black sedan directly ahead in the ego lane is stopped for pedestrians in the crosswalk, constraining the ego car's pace. Ahead-right, a red taxi in the same direction also waits near the crosswalk, queued behind the stopped traffic. Several pedestrians cross from right to left in front of the queue, keeping vehicles paused, while metal railings and work-zone barriers tighten the left margin.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car because of pedestrians walking in a crosswalk. The driver should stop immediately to avoid hitting the stopped vehicle and ensure pedestrian safety."}
{"id": "train_05273", "split": "train", "clip_key": "2020-0214-102601_066460_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "066460"}, "frames": ["2020-0214-102601_066460_movie_t-3.jpg", "2020-0214-102601_066460_movie_t-2.jpg", "2020-0214-102601_066460_movie_t-1.jpg", "2020-0214-102601_066460_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-lane one-way road with smooth pavement and curbside barriers carries light to moderate same-direction traffic that briefly bunches. In the ego lane, a blue hatchback directly ahead slows because a darker minivan farther ahead is moving from the right lane into the ego lane and constraining its pace. The merging minivan continues straight after drifting left across the dashed line, occupying the lane ahead of the hatchback. Another vehicle remains in the right lane ahead and proceeds forward without interacting with the ego's path. A pedestrian walks along the left sidewalk behind a fence, and a no-entry sign marks a small side street on the left.", "hazard_reasoning": "There is a blue hatchback slowing in the ego lane, because the car ahead of it is changing lanes, into the ego-lane. This lane-change maneuver forces the hatchback to decelerate, creating a risk of collision if following speed is maintained, so slow down to maintain a safe distance."}
{"id": "train_05274", "split": "train", "clip_key": "2020-0228-102841_025605_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "025605"}, "frames": ["2020-0228-102841_025605_movie_t-3.jpg", "2020-0228-102841_025605_movie_t-2.jpg", "2020-0228-102841_025605_movie_t-1.jpg", "2020-0228-102841_025605_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with two lanes in each direction runs between mid-rise buildings; the pavement is smooth and traffic is moderate but bunches up ahead near a roadside work area. Directly ahead in the ego lane, a black sedan slows because of congestion ahead and it dictates our pace. To the left by the curb, a white work truck stands beside cones and barricades, narrowing that lane and contributing to the slowdown. On the right side of the roadway, oncoming vehicles including a truck proceed steadily without delay. An overhead gantry displays a 50 speed limit.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance as the vehicle ahead is decelerating due to congestion."}
{"id": "train_05275", "split": "train", "clip_key": "2020-0205-152530_046883_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "046883"}, "frames": ["2020-0205-152530_046883_movie_t-3.jpg", "2020-0205-152530_046883_movie_t-2.jpg", "2020-0205-152530_046883_movie_t-1.jpg", "2020-0205-152530_046883_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with a planted median and smooth pavement carries moderate same-direction traffic toward a signalized intersection ahead. A white box truck directly ahead in the ego lane slows toward the junction because the overhead traffic signal shows red, setting the ego vehicle's pace. To the right, a black car in the adjacent lane continues steadily and draws slightly ahead without merging. Farther ahead, several vehicles queue across the lanes near the intersection. No unusual obstacles or work zones are visible.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane because of a red traffic light ahead. The driver should slow down to match the truck's reduced speed and avoid a collision when the truck stops."}
{"id": "train_05276", "split": "train", "clip_key": "titan_clip_1078_000120_movie", "source": {"subset": "titan", "scenario": "clip_1078", "frame": "000120"}, "frames": ["titan_clip_1078_000120_movie_t-3.jpg", "titan_clip_1078_000120_movie_t-2.jpg", "titan_clip_1078_000120_movie_t-1.jpg", "titan_clip_1078_000120_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban narrow undivided street with a single shared lane passes a roadside construction area; the pavement is patchy and vehicular traffic is light with no cars visible. On the right edge near the ego vehicle, two pedestrians walk away along the lane boundary, encroaching slightly into the travel lane and constraining pace. Farther ahead on the right, a pedestrian wearing a blue T-shirt walks away from the ego car along the roadside, staying close to the ego lane and reducing clearance. Ahead near the center, another pedestrian continues away in the lane, remaining directly in the ego path. Cones and construction materials line the left side as a work zone, narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a blue T-shirt, walking away from the ego car, on the right side of the road. The driver should be aware of this pedestrian as they may step into the roadway unexpectedly."}
{"id": "train_05277", "split": "train", "clip_key": "2020-0225-145150_000462_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-145150_000462_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-145150_000462_movie_t-3_augB1.jpg", "2020-0225-145150_000462_movie_t-2_augB1.jpg", "2020-0225-145150_000462_movie_t-1_augB1.jpg", "2020-0225-145150_000462_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street lined with shops features two narrow lanes divided by double yellow lines, smooth pavement, and light, steady traffic. Ahead in the ego lane, a cyclist in a black shirt and black pants rides near the centerline in the middle of the road because a vehicle is parked along the left curb, so the rider takes the lane and slows the ego's approach. An oncoming white van approaches through the zebra crossing in the opposite lane, continuing straight and preventing an overtake. Pedestrians move along both sidewalks, with a few on the right standing at the curb near the crosswalk. A pedestrian crossing sign is mounted above the crosswalk.", "hazard_reasoning": "There is a cyclist wearing a black shirt and black pants and cycling in the middle of the road because of a parked vehicle. The driver should carefully manoeuvre around the cyclist to avoid collision, as the cyclist has moved into the driving lane by necessity."}
{"id": "train_05278", "split": "train", "clip_key": "2020-0129-105040_020752_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "020752"}, "frames": ["2020-0129-105040_020752_movie_t-3.jpg", "2020-0129-105040_020752_movie_t-2.jpg", "2020-0129-105040_020752_movie_t-1.jpg", "2020-0129-105040_020752_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a large signalized intersection, with three lanes in the ego direction, painted dividers only and smooth pavement; traffic is moderate and flows steadily while oncoming traffic moves on the far right side of the boulevard. A blue van ahead in the ego lane drives away from the ego car, continuing straight and lightly setting the pace. Farther ahead, a white box truck in the same corridor proceeds through the junction, keeping a steady gap to the vehicles in front. To the right, a white station wagon runs parallel in the adjacent lane and continues straight without encroaching.", "hazard_reasoning": "There is a blue van driving in the ego lane away from the ego car. The van ahead could change lanes or adjust speed unexpectedly, so the driver should remain alert under this situation."}
{"id": "train_05279", "split": "train", "clip_key": "titan_clip_627_000042_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_627_000042_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_627_000042_movie_t-3_augB1.jpg", "titan_clip_627_000042_movie_t-2_augB1.jpg", "titan_clip_627_000042_movie_t-1_augB1.jpg", "titan_clip_627_000042_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way carriageway lacks a centerline and has green bicycle shoulders on both sides; the pavement looks smooth and motor traffic is light. Ahead in the ego lane, several pedestrians cross from the right toward the left at walking pace, occupying the lane and momentarily dictating the ego vehicle's speed. Among them, a pedestrian dressed entirely in gray crosses to the left side of the road, moving away from the camera and gradually clearing the path. Parked bicycles and storefront displays line the right shoulder, slightly narrowing the roadway near the curb.", "hazard_reasoning": "There is a pedestrian wearing all gray, crossing to the left side of the road, away from the ego car. Because the pedestrian is entering the lane ahead, the driver should slow down to avoid a potential collision."}
{"id": "train_05280", "split": "train", "clip_key": "2020-0228-102841_050446_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "050446"}, "frames": ["2020-0228-102841_050446_movie_t-3.jpg", "2020-0228-102841_050446_movie_t-2.jpg", "2020-0228-102841_050446_movie_t-1.jpg", "2020-0228-102841_050446_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way road with one lane in each direction and no median runs between mid-rise buildings; the pavement looks dry and intact, and overall flow is light to moderate with a brief slowdown near the next intersection. Ahead in the ego lane, a white minivan slows behind queued vehicles, constraining our pace because of congestion ahead. Farther ahead in the same direction, a small truck and several cars proceed slowly in line, maintaining the bottleneck. In the opposing lane to the right, oncoming cars pass steadily without affecting our path. A pedestrian stands at the right curb beside the marked crosswalk near a small island with bollards.", "hazard_reasoning": "There's a white minivan slowing down in the ego lane, because of traffic congestion ahead. Follow the vehicle ahead to maintain a safe distance and avoid a rear-end collision under the reduced speed scenario."}
{"id": "train_05281", "split": "train", "clip_key": "titan_clip_1128_000360_movie", "source": {"subset": "titan", "scenario": "clip_1128", "frame": "000360"}, "frames": ["titan_clip_1128_000360_movie_t-3.jpg", "titan_clip_1128_000360_movie_t-2.jpg", "titan_clip_1128_000360_movie_t-1.jpg", "titan_clip_1128_000360_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrians ahead", "environment_perception": "An urban residential street with a narrow two-way carriageway curves gently uphill; the asphalt is smooth, with curbs and sidewalks but no median, and traffic is light with no vehicles in view. On the right edge ahead, two women carrying handbags walk toward the ego vehicle along the curb, edging close to the roadway and possibly entering its path. On the left shoulder very near the ego lane, a man with a backpack walks away in the same direction along the red sidewalk, reducing available width beside the car. Farther ahead on the left, another pedestrian approaches along the sidewalk. Overhanging trees and the bend limit the view ahead.", "hazard_reasoning": "There are two women carrying handbags and walking on the right side of the road, toward the ego car. The pedestrians-proximity to the driving lane means they could step into the vehicle's path unexpectedly, requiring the driver to remain attentive and slow down."}
{"id": "train_05282", "split": "train", "clip_key": "2020-0204-150838_040562_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "040562"}, "frames": ["2020-0204-150838_040562_movie_t-3.jpg", "2020-0204-150838_040562_movie_t-2.jpg", "2020-0204-150838_040562_movie_t-1.jpg", "2020-0204-150838_040562_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane avenue with no physical median has dry, slightly worn pavement and moderate, steady traffic approaching a signalized intersection. The signals ahead show green. A white van directly ahead in the ego lane accelerates away through the green, widening its gap and setting the pace. A small covered truck in the adjacent right lane continues straight at a similar speed while staying in its lane, posing no immediate constraint. A silver sedan near the front-left edge travels alongside in the left lane without merging. Farther ahead several cars clear the junction, and pedestrians remain on the sidewalks.", "hazard_reasoning": "There is a white van driving away from the ego car, in the ego lane, because of green traffic lights. Following the vehicle ahead helps maintain safe spacing and anticipate any changes in the signal at the intersection."}
{"id": "train_05283", "split": "train", "clip_key": "2020-0228-102841_029255_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "029255"}, "frames": ["2020-0228-102841_029255_movie_t-3.jpg", "2020-0228-102841_029255_movie_t-2.jpg", "2020-0228-102841_029255_movie_t-1.jpg", "2020-0228-102841_029255_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "be aware of the cyclist crossing on left side", "environment_perception": "An urban intersection on a two-way road with a zebra crosswalk and smooth pavement is ahead, and traffic is light. On the left near the crosswalk, a cyclist wearing a cap and a maroon T-shirt rides away from the ego and crosses the side street, staying clear of the lane. A white hatchback ahead at the left curb edges toward the junction and waits, possibly entering the ego lane. In the right half of the intersection, a red SUV moves through from right to left in the opposing lanes without affecting the path. Farther ahead, a small van continues straight away in the center lanes. An overhead pedestrian walkway and sign span the road, a traffic signal is visible ahead, and construction cones and fencing line the left sidewalk.", "hazard_reasoning": "There is a cyclist wearing a cap and a maroon t-shirt crossing the street on the left side of the road, away from the ego car. The driver should be aware that the cyclist may enter the lane unexpectedly due to the nearby construction."}
{"id": "train_05284", "split": "train", "clip_key": "2020-0131-135401_004978_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "004978"}, "frames": ["2020-0131-135401_004978_movie_t-3.jpg", "2020-0131-135401_004978_movie_t-2.jpg", "2020-0131-135401_004978_movie_t-1.jpg", "2020-0131-135401_004978_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with stopped truck", "environment_perception": "A narrow urban two-way street with one lane each direction and smooth pavement appears, with light traffic but the flow in the ego lane is blocked. A white box truck is stopped directly ahead in the ego lane, holding the ego vehicle's position. An oncoming dark sedan approaches and passes on the right in its lane beside the truck, occupying the opposite lane ahead. Three pedestrians walk forward on the left sidewalk near the truck while remaining off the roadway. An overhead circular sign shows a 40 speed limit, and bright sun glare washes the right side.", "hazard_reasoning": "There is a white truck stopped in the ego lane in front of the ego car. Stop to avoid collision with the stopped truck; the driver must come to a complete halt to prevent a rear-end crash."}
{"id": "train_05285", "split": "train", "clip_key": "2020-0221-115122_005651_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "005651"}, "frames": ["2020-0221-115122_005651_movie_t-3.jpg", "2020-0221-115122_005651_movie_t-2.jpg", "2020-0221-115122_005651_movie_t-1.jpg", "2020-0221-115122_005651_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane avenue with high-rise buildings and dry, smooth pavement carries heavy, stop-and-go traffic with no median clearly visible. A silver sedan is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle in place. In the adjacent right lane, a line of vans and cars stands or inches forward beside the ego car, limiting any chance to merge. A white hatchback to the right front waits slightly ahead in its lane, aligned with the ego vehicle and moving only intermittently.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop promptly to avoid colliding with the halted vehicle."}
{"id": "train_05286", "split": "train", "clip_key": "titan_clip_116_000132_movie", "source": {"subset": "titan", "scenario": "clip_116", "frame": "000132"}, "frames": ["titan_clip_116_000132_movie_t-3.jpg", "titan_clip_116_000132_movie_t-2.jpg", "titan_clip_116_000132_movie_t-1.jpg", "titan_clip_116_000132_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "A narrow urban side street with a single shared lane and no median runs between tall buildings; the pavement is smooth and traffic is light with no moving vehicles visible. A white truck is parked on the right curb ahead while being unloaded, narrowing the available lane. Several pedestrians are ahead near the center and right, some walking along the roadway beside the truck and others crossing in front of it, so they may enter the ego lane. Additional pedestrians stand by shopfronts on the right but remain at the curb. Cones and a roped-off area on the left, plus caf signboards on the right, protrude toward the roadway as fixed obstacles.", "hazard_reasoning": "There is a white truck parked on the right side of the road, because it is being unloaded. The parked vehicle narrows the driving lane and could force the driver to manoeuvre carefully around it to avoid collision."}
{"id": "train_05287", "split": "train", "clip_key": "titan_clip_880_000120_movie", "source": {"subset": "titan", "scenario": "clip_880", "frame": "000120"}, "frames": ["titan_clip_880_000120_movie_t-3.jpg", "titan_clip_880_000120_movie_t-2.jpg", "titan_clip_880_000120_movie_t-1.jpg", "titan_clip_880_000120_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the merging van", "environment_perception": "A dense urban commercial street with trees and shops appears as a narrow two-way road without a median; the dry pavement is smooth and traffic is light to moderate. A white van ahead angles out from the left curb and cuts in front of the ego car, merging into the ego lane. A black sedan is very close along the right edge in the opposing lane, moving past in the oncoming direction. Farther ahead, a white box truck proceeds straight in the same direction in the lane ahead. No salient signals or speed signs are visible.", "hazard_reasoning": "There is a white van cutting-in, in front of the ego car. The van's sudden lane change into your path reduces safe following distance and requires you to yield to avoid a collision."}
{"id": "train_05288", "split": "train", "clip_key": "2020-0214-102601_000957_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "000957"}, "frames": ["2020-0214-102601_000957_movie_t-3.jpg", "2020-0214-102601_000957_movie_t-2.jpg", "2020-0214-102601_000957_movie_t-1.jpg", "2020-0214-102601_000957_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential scene shows a two-lane two-way road with a yellow centerline and dry, smooth pavement; traffic is light with no moving vehicles. Metal railings line the sidewalks and the road bends gently right ahead. On the right, a pedestrian beside a row of vending machines walks along the sidewalk to the right, parallel to the ego vehicle's path and not entering the lane. A scooter stands parked in a recessed shop entrance, creating no obstruction.", "hazard_reasoning": "No hazards are visible; the road is clear and the driver can continue safely."}
{"id": "train_05289", "split": "train", "clip_key": "titan_clip_241_000330_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_241_000330_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_241_000330_movie_t-3_augB1.jpg", "titan_clip_241_000330_movie_t-2_augB1.jpg", "titan_clip_241_000330_movie_t-1_augB1.jpg", "titan_clip_241_000330_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A dense urban shopping street forms a single narrow lane with brick paving, no median, and light traffic. Ahead in the ego lane, a pedestrian wearing a white shirt and black pants and carrying a handbag walks away from the vehicle along the center of the lane, constraining the pace. To the right, a black sedan is stopped at the curb with its rear open while pedestrians near the shopfront walk along the edge and momentarily step into the roadway. Far ahead, a small car proceeds in the same direction down the street. On the left, a man stands by a bicycle and several cones line the curb, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a handbag, walking in front of the ego car, moving away from the ego car. The pedestrian is directly ahead in the vehicle's path and may change pace or direction unexpectedly, so the driver should carefully manoeuvre around them."}
{"id": "train_05290", "split": "train", "clip_key": "2020-0131-135401_040916_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "040916"}, "frames": ["2020-0131-135401_040916_movie_t-3.jpg", "2020-0131-135401_040916_movie_t-2.jpg", "2020-0131-135401_040916_movie_t-1.jpg", "2020-0131-135401_040916_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street approaches a signalized intersection, with one through lane in the ego direction plus a right-turn lane and a painted center line against oncoming traffic; the dry pavement looks smooth and traffic is heavy and slow. A white hatchback directly ahead in the ego lane is stopped because of congestion ahead, blocking the path. Farther ahead slightly left, a small red van queues in the same direction and remains slow, contributing to the backup. On the right side of the roadway, oncoming cars proceed through the junction in their single lane without affecting the ego lane. Overhead traffic lights hang above the intersection and govern the flow as vehicles inch forward.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Driver should stop because the vehicle ahead is halted due to congestion and failing to do so could cause a rear-end collision."}
{"id": "train_05291", "split": "train", "clip_key": "titan_clip_193_000696_movie", "source": {"subset": "titan", "scenario": "clip_193", "frame": "000696"}, "frames": ["titan_clip_193_000696_movie_t-3.jpg", "titan_clip_193_000696_movie_t-2.jpg", "titan_clip_193_000696_movie_t-1.jpg", "titan_clip_193_000696_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked minivan", "environment_perception": "An urban two-way street with one lane in each direction and no median stretches between mid-rise buildings; the pavement is smooth and dry, and traffic is light with occasional oncoming cars as the ego vehicle proceeds in the left lane. A dark car travels ahead in the ego lane at a steady pace, maintaining distance. Along the left margin, several parked vehicles, including a black minivan close by, occupy the curbside and narrow the usable lane. At the right curb mid-block, a scooter with a rider remains stopped near a driveway alongside the roadway, adjacent to the ego lane.", "hazard_reasoning": "There is a black minivan parked on the left side of the road. This parked vehicle may obstruct the driver's view of approaching traffic or pedestrians and could pull out unexpectedly, so the driver should be aware and maintain vigilance."}
{"id": "train_05292", "split": "train", "clip_key": "titan_clip_152_000558_movie", "source": {"subset": "titan", "scenario": "clip_152", "frame": "000558"}, "frames": ["titan_clip_152_000558_movie_t-3.jpg", "titan_clip_152_000558_movie_t-2.jpg", "titan_clip_152_000558_movie_t-1.jpg", "titan_clip_152_000558_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban shopping street with a single narrow lane runs between shops, with a planted curb and railing on the right and curbside parking bays on the left; the pavement is smooth and traffic is light. A white hatchback ahead in the ego lane proceeds slowly near the center of the lane and effectively sets the pace. A black sedan is parked at the left curb in the foreground, reducing the usable width as the ego passes. Farther ahead another small car is stopped along the left side near storefronts. Pedestrians walk along the right sidewalk by the cafes and remain off the roadway.", "hazard_reasoning": "There are no visible vehicles, pedestrians, or obstacles posing a risk; the road is clear for normal driving."}
{"id": "train_05293", "split": "train", "clip_key": "titan_clip_595_000588_movie", "source": {"subset": "titan", "scenario": "clip_595", "frame": "000588"}, "frames": ["titan_clip_595_000588_movie_t-3.jpg", "titan_clip_595_000588_movie_t-2.jpg", "titan_clip_595_000588_movie_t-1.jpg", "titan_clip_595_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban backstreet with closely spaced buildings forms a narrow two-way road without a median; the worn asphalt is dry and traffic is light with no vehicles in view. Ahead on the left edge of the roadway, a pedestrian wearing a blue shirt and black pants walks toward the ego car along the lane margin and could step into the ego path. Slightly nearer to the centerline, another man in a white shirt also walks toward the ego vehicle and partially occupies the travel lane, constraining speed. A bright standing sign on the right and parked bicycles and shop displays on the left narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, walking on the left side of the road, towards the ego car. The pedestrian is approaching the vehicle's path and may step onto the road, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_05294", "split": "train", "clip_key": "2020-0228-150133_081206_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "081206"}, "frames": ["2020-0228-150133_081206_movie_t-3.jpg", "2020-0228-150133_081206_movie_t-2.jpg", "2020-0228-150133_081206_movie_t-1.jpg", "2020-0228-150133_081206_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes runs straight with a landscaped median and smooth, dry pavement; traffic is light and flows steadily. The ego-vehicle proceeds in the left lane. A small silver van directly ahead in the ego lane travels steadily and effectively sets the ego car's pace. Farther ahead in the same lane, a gray SUV accelerates away, increasing the gap to the vehicles behind. A dark car in the right lane ahead continues straight at similar speed without merging toward the ego path. Pedestrians walk on both sidewalks behind hedges, remaining clear of the roadway. An overhead speed-limit sign shows 50.", "hazard_reasoning": "There's a gray SUV accelerating ahead of the ego-car, in the ego-car lane. Follow the vehicle ahead at a safe distance to reduce the risk of collision if its speed changes suddenly."}
{"id": "train_05295", "split": "train", "clip_key": "2020-0129-144857_059805_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "059805"}, "frames": ["2020-0129-144857_059805_movie_t-3.jpg", "2020-0129-144857_059805_movie_t-2.jpg", "2020-0129-144857_059805_movie_t-1.jpg", "2020-0129-144857_059805_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be cautious of the slowing truck ahead", "environment_perception": "An urban divided road with a single same-direction lane and a guardrail median stretches ahead on dry, slightly worn pavement; traffic is moderate with a brief slowdown forming in the distance. A white and red truck directly ahead in the ego lane slows because of traffic congestion ahead, constraining the ego vehicle's pace. On the far side of the median, oncoming cars move steadily without interacting with the ego lane. On the left sidewalk, a pedestrian walks along behind a fence, remaining clear of the roadway.", "hazard_reasoning": "There's a white and red truck slowing in the left lane, because of the traffic congestion ahead. Anticipate reduced speeds and maintain a safe following distance to avoid sudden braking."}
{"id": "train_05296", "split": "train", "clip_key": "2020-0205-103411_000623_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "000623"}, "frames": ["2020-0205-103411_000623_movie_t-3.jpg", "2020-0205-103411_000623_movie_t-2.jpg", "2020-0205-103411_000623_movie_t-1.jpg", "2020-0205-103411_000623_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to maintain safe distance.", "environment_perception": "An urban street passes a fenced construction site, with two lanes in the same direction and no median; the pavement is smooth and traffic is heavy and slow. A black sedan is stopped immediately ahead in the ego lane because of congestion, holding the ego vehicle in place. To the right, a red taxi ahead inches forward near the crosswalk in the adjacent lane, queuing with several cars and limiting progress. At the zebra crossing on the right-front, pedestrians walk across the lanes from right to left, so nearby vehicles yield and wait. Cones and guardrails line the left edge, narrowing the roadway, and a pedestrian crossing sign is visible.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain a safe distance and avoid a collision with the halted vehicle ahead."}
{"id": "train_05297", "split": "train", "clip_key": "2020-0220-102630_045640_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "045640"}, "frames": ["2020-0220-102630_045640_movie_t-3.jpg", "2020-0220-102630_045640_movie_t-2.jpg", "2020-0220-102630_045640_movie_t-1.jpg", "2020-0220-102630_045640_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road runs under an elevated structure, with a close fence and columns on the right and a neighboring same-direction lane on the left; the dry pavement is slightly worn and traffic is slow and heavy. A white box truck directly ahead in the ego lane moves away slowly as the queue creeps forward, setting the ego vehicle's pace because of moving traffic ahead. To the left, a small tarp-covered truck in the adjacent lane travels alongside and slightly ahead at a similar speed, limiting space for a lane change. The tight right-side barrier and columns leave no shoulder beside the ego lane.", "hazard_reasoning": "There is a white truck driving in front of, and away from the ego car, in the ego lane, because of moving traffic ahead. The truck blocks the driver's forward view and may brake suddenly without warning, so the driver should start moving cautiously when the road ahead clears."}
{"id": "train_05298", "split": "train", "clip_key": "2020-0228-102841_073318_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "073318"}, "frames": ["2020-0228-102841_073318_movie_t-3.jpg", "2020-0228-102841_073318_movie_t-2.jpg", "2020-0228-102841_073318_movie_t-1.jpg", "2020-0228-102841_073318_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban signalized intersection appears with two-way streets, no median, and smooth dry pavement; the ego vehicle waits in the left lane at a zebra crossing amid light traffic. A pedestrian ahead slightly left walks across the crosswalk from right to left, crossing the ego lane and constraining progress. On the left side of the cross street, a small white car stands near the corner facing the intersection, poised to proceed and potentially enter the junction after the crossing clears. Far ahead in the narrow street beyond the intersection, a box truck sits or rolls slowly away along the center of the lane the ego would take if continuing straight. Additional pedestrians wait on both far-side sidewalks.", "hazard_reasoning": "There are no apparent hazards, so the driver can continue without special caution."}
{"id": "train_05299", "split": "train", "clip_key": "titan_clip_571_000342_movie", "source": {"subset": "titan", "scenario": "clip_571", "frame": "000342"}, "frames": ["titan_clip_571_000342_movie_t-3.jpg", "titan_clip_571_000342_movie_t-2.jpg", "titan_clip_571_000342_movie_t-1.jpg", "titan_clip_571_000342_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban residential two-way street with a single narrow lane each direction and no median passes through a small intersection with zebra crossings; the pavement is smooth and traffic is light. A dark car ahead in the ego lane waits at the crosswalk, constraining the ego vehicle's pace. A man wearing a cap, white T-shirt, beige jacket, black pants, earphones, and a backpack crosses from the right across the crosswalk in front of the car. On the left, a cyclist emerges from the side street at the crosswalk and rolls forward, possibly entering the ego lane after the pedestrian clears. A blue straight-ahead sign and a pedestrian crossing sign mark the intersection.", "hazard_reasoning": "There's a man wearing a cap, white t-shirt, earphones, beige jacket, and black pants, and carrying a backpack, crossing the street in front of the ego car from the right side of the road because of the crosswalk. The driver should stop immediately to avoid colliding with the pedestrian at the crosswalk."}
{"id": "train_05300", "split": "train", "clip_key": "titan_clip_706_000066_movie", "source": {"subset": "titan", "scenario": "clip_706", "frame": "000066"}, "frames": ["titan_clip_706_000066_movie_t-3.jpg", "titan_clip_706_000066_movie_t-2.jpg", "titan_clip_706_000066_movie_t-1.jpg", "titan_clip_706_000066_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian ahead", "environment_perception": "An urban back street with two-way traffic and no centerline runs between shopfronts; the asphalt is smooth but the usable lane is narrowed by stacked boxes and a bicycle along the left edge, and overall traffic is light. Ahead right, a silver minivan approaches in the oncoming direction at low speed, reducing passing space. On the right edge near the shops, a pedestrian wearing a black shirt and carrying a handbag walks toward the ego vehicle along the roadway and could drift into the travel lane. Another person on the right waits beside a handcart and goods near a doorway, close to the curb and potentially encroaching. A blue no-parking sign is posted on the left building.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a handbag, walking on the right side of the road, towards the ego car. The pedestrian may step into the road unexpectedly, so the driver should be cautious."}
{"id": "train_05301", "split": "train", "clip_key": "2020-0210-101957_023020_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "023020"}, "frames": ["2020-0210-101957_023020_movie_t-3.jpg", "2020-0210-101957_023020_movie_t-2.jpg", "2020-0210-101957_023020_movie_t-1.jpg", "2020-0210-101957_023020_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be cautious of the motorcycle ahead.", "environment_perception": "An urban multi-lane road with two same-direction lanes and no physical median stretches toward a signalized intersection, the pavement smooth and traffic moderate and steady. A black motorcycle ahead in the ego lane travels straight at a steady pace, directly setting the ego vehicle's speed. Slightly ahead to the right, a white van in the adjacent same-direction lane continues through the intersection at similar speed and could drift back toward the ego lane afterward. To the far right, a black sedan moves toward the camera in the oncoming lanes, remaining separated by lane markings and not conflicting with the ego path. Signal heads are visible above the intersection.", "hazard_reasoning": "There is a black motorcycle driving in front of the ego car in the ego lane. The motorcycle's position directly ahead means it could brake suddenly or change behavior, so the driver should remain cautious."}
{"id": "train_05302", "split": "train", "clip_key": "2020-0218-151547_027602_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "027602"}, "frames": ["2020-0218-151547_027602_movie_t-3.jpg", "2020-0218-151547_027602_movie_t-2.jpg", "2020-0218-151547_027602_movie_t-1.jpg", "2020-0218-151547_027602_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the silver sedan approaching to your right", "environment_perception": "An urban multi-lane road runs beneath an elevated expressway, the pavement smooth and traffic moderate as the scene approaches a wide intersection. A small white car ahead in the ego lane proceeds straight over the zebra crossing and continues under the viaduct, setting the pace. To the right, a silver sedan in the adjacent same-direction lane drives forward parallel to the ego vehicle. At the left crosswalk, two pedestrians wait by the curb.", "hazard_reasoning": "There is a silver sedan driving in the right lane, to the ego lane. The sedan may cut into your lane from the right, so you should be aware of its approach."}
{"id": "train_05303", "split": "train", "clip_key": "2020-0207-101955_052446_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "052446"}, "frames": ["2020-0207-101955_052446_movie_t-3.jpg", "2020-0207-101955_052446_movie_t-2.jpg", "2020-0207-101955_052446_movie_t-1.jpg", "2020-0207-101955_052446_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban divided arterial lined with mid-rise buildings carries two same-direction lanes on the left side of a low hedge median; the pavement is clean and dry, and traffic in the ego direction is heavy and stop-and-go. A black sedan directly ahead in the ego lane remains stopped because congestion blocks forward movement, holding the ego vehicle. In the adjacent left lane, a white van slightly ahead inches forward and then halts, limiting any chance to merge. Across the median to the right, oncoming traffic flows more freely with scattered cars. Overhead blue guide signs for major routes are visible above the queue.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of traffic congestion ahead. The sedan's abrupt halt increases the risk of a rear-end collision, so the driver should stop immediately to maintain a safe distance and avoid impact."}
{"id": "train_05304", "split": "train", "clip_key": "2020-0218-103119_006720_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "006720"}, "frames": ["2020-0218-103119_006720_movie_t-3.jpg", "2020-0218-103119_006720_movie_t-2.jpg", "2020-0218-103119_006720_movie_t-1.jpg", "2020-0218-103119_006720_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban residential street appears very narrow with one lane each way, no median, and clean pavement; traffic is light. The ego travels in the left lane as a green sedan ahead in the same direction slows and angles toward the center to drive around a parked vehicle in the ego lane. The opposite lane looks clear of oncoming traffic. A white truck is parked tight to the right curb, and bicycles and other parked items line the left side, further narrowing the corridor.", "hazard_reasoning": "There is a green sedan driving around a parked vehicle, in the ego lane. The sedan's maneuver may indicate an unexpected lane change, so the driver should follow the vehicle ahead to maintain a safe distance."}
{"id": "train_05305", "split": "train", "clip_key": "titan_clip_1146_000210_movie", "source": {"subset": "titan", "scenario": "clip_1146", "frame": "000210"}, "frames": ["titan_clip_1146_000210_movie_t-3.jpg", "titan_clip_1146_000210_movie_t-2.jpg", "titan_clip_1146_000210_movie_t-1.jpg", "titan_clip_1146_000210_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban back street with a narrow two-way carriageway and no median runs between closely spaced buildings; the pavement is worn with patches and a manhole, and traffic is very light with no same-direction or oncoming vehicles visible. Ahead along the right edge, two pedestrians wearing white shirts and black pants walk away from the ego car beside the curb, continuing in the same direction close to the travel lane. Blue traffic cones with a cordon and several parked bicycles line the left side while trash bins and a vending machine sit along the right, leaving a tight corridor; a pothole lies near the center of the lane.", "hazard_reasoning": "There are two pedestrians wearing a white shirt and black pants, walking along the right side of the road, away from the ego car. The driver should carefully manoeuvre around them to maintain a safe distance and avoid a collision."}
{"id": "train_05306", "split": "train", "clip_key": "titan_clip_315_000120_movie", "source": {"subset": "titan", "scenario": "clip_315", "frame": "000120"}, "frames": ["titan_clip_315_000120_movie_t-3.jpg", "titan_clip_315_000120_movie_t-2.jpg", "titan_clip_315_000120_movie_t-1.jpg", "titan_clip_315_000120_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian.", "environment_perception": "A dense urban shopping street with no lane markings and block-paved surface forms a very narrow single-lane passage between storefronts, with no divider and no visible vehicular traffic. A pedestrian wearing a white shirt and black pants crosses directly in front of the ego-vehicle toward the left side, walking across the path and occupying the ego lane. Farther ahead on the right, another pedestrian in light clothing moves slowly along the storefront edge without entering the lane. A few more pedestrians appear in the distance along the center of the street, walking away and not interacting with the vehicle. Store displays and signboards protrude at the edges, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, crossing to the left side of the road, in front of the ego car. You should yield because the pedestrian is crossing directly ahead and may enter your path."}
{"id": "train_05307", "split": "train", "clip_key": "2020-0213-143552_038117_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "038117"}, "frames": ["2020-0213-143552_038117_movie_t-3.jpg", "2020-0213-143552_038117_movie_t-2.jpg", "2020-0213-143552_038117_movie_t-1.jpg", "2020-0213-143552_038117_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid hitting the stopped truck.", "environment_perception": "An urban road runs beneath an elevated structure with dry, clean pavement and light traffic; no oncoming flow is visible. A white box truck directly ahead in the ego lane is stopped, blocking the path and constraining the pace. To the left, a small white van stands at the curb in a side bay and remains clear of the lane. A pedestrian on the left sidewalk waits near a bus stop without moving toward the roadway. The adjacent right lane appears open with no vehicles immediately beside the truck.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The stationary truck directly ahead poses a collision risk if the driver does not slow down and stop in time, especially under changing light and shadow conditions. The driver should stop to avoid a rear-end collision."}
{"id": "train_05308", "split": "train", "clip_key": "titan_clip_1245_000024_movie", "source": {"subset": "titan", "scenario": "clip_1245", "frame": "000024"}, "frames": ["titan_clip_1245_000024_movie_t-3.jpg", "titan_clip_1245_000024_movie_t-2.jpg", "titan_clip_1245_000024_movie_t-1.jpg", "titan_clip_1245_000024_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban alley with a single unmarked lane runs between storefronts; the pavement is smooth, traffic is light, and metal railings narrow the right edge. A small utility truck is stopped ahead slightly right, partly occupying the lane and creating a choke point. In front of it, a pedestrian wearing black walks toward the ego vehicle in the middle of the road because the parked vehicle forces them off the side, directly affecting the path. Farther ahead by the left storefronts, another person walks away along the edge and remains clear of the lane. No traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing black clothing, walking towards the ego car in the middle of the road, because of the parked vehicle. The pedestrian may enter the ego-vehicle's path due to the sidewalk obstruction, so the driver needs to be aware to avoid a collision."}
{"id": "train_05309", "split": "train", "clip_key": "2020-0225-145150_022949_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "022949"}, "frames": ["2020-0225-145150_022949_movie_t-3.jpg", "2020-0225-145150_022949_movie_t-2.jpg", "2020-0225-145150_022949_movie_t-1.jpg", "2020-0225-145150_022949_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road runs between mid-rise buildings with one lane per direction, a solid yellow centerline, and low green side barriers; the asphalt is dry and traffic is light. A silver van ahead in the ego lane proceeds straight and gradually pulls away, effectively setting the ego car's pace. Several cars travel toward the camera in the right-hand oncoming lane, moving steadily within their lane without interacting with the ego vehicle. No traffic signals or unusual signs are evident, and no pedestrians, cyclists, or obstacles appear near the roadway.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car. The driver should follow the vehicle ahead to maintain a safe distance in case it brakes suddenly."}
{"id": "train_05310", "split": "train", "clip_key": "2020-0227-104226_077410_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "077410"}, "frames": ["2020-0227-104226_077410_movie_t-3.jpg", "2020-0227-104226_077410_movie_t-2.jpg", "2020-0227-104226_077410_movie_t-1.jpg", "2020-0227-104226_077410_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked sedan", "environment_perception": "A narrow urban residential two-way road with no median and smooth pavement is shown, with light traffic as the ego vehicle proceeds in the left lane. Ahead in the same lane, a black boxy SUV travels slowly near the centerline, constraining the ego car's pace on the tight roadway. Farther ahead on the left, a brown sedan is parked partly protruding into the ego lane, narrowing the passage and requiring vehicles to pass carefully. A person stands on the left sidewalk by an apartment entrance, stationary and clear of the carriageway. The oncoming lane appears empty. A 30 speed-limit sign is visible on the left.", "hazard_reasoning": "There is a brown sedan parked on the left-hand side of the road, which is partially blocking the ego-car lane. The parked sedan obstructs part of the driving lane, requiring careful manoeuvre to avoid collision."}
{"id": "train_05311", "split": "train", "clip_key": "titan_clip_481_000468_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_481_000468_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_481_000468_movie_t-3_augB1.jpg", "titan_clip_481_000468_movie_t-2_augB1.jpg", "titan_clip_481_000468_movie_t-1_augB1.jpg", "titan_clip_481_000468_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow one-lane street with no median stretches between tall buildings; the cobblestone-like pavement looks intact and traffic is very light. Ahead in the ego lane, a pedestrian wearing a white shirt and black pants walks in the middle of the road, moving diagonally toward the right curb as the left side lacks a usable sidewalk, temporarily occupying the vehicle's path. Construction materials and barriers line the left frontage near storefronts, narrowing the roadside but not the lane. No salient signals are visible, and no other moving vehicles are immediately nearby.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants in the middle of the road, crossing to the right side because there is no sidewalk on the left side of the road. The driver should slow down because the pedestrian is crossing mid-road due to lack of sidewalk, posing a collision risk."}
{"id": "train_05312", "split": "train", "clip_key": "titan_clip_828_000144_movie", "source": {"subset": "titan", "scenario": "clip_828", "frame": "000144"}, "frames": ["titan_clip_828_000144_movie_t-3.jpg", "titan_clip_828_000144_movie_t-2.jpg", "titan_clip_828_000144_movie_t-1.jpg", "titan_clip_828_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban narrow two-way street without a centerline runs between shopfronts, the pavement smooth and dry; vehicle traffic is light while pedestrian and bicycle activity makes the overall flow slow. On the right side near the ego, a woman in black shorts and top with sandals and a cap, carrying a handbag and pulling a gray suitcase, walks forward along the edge close to the lane. Ahead in the middle, a bicyclist rides away near the center of the roadway, reducing the available width. Farther ahead slightly left, a pedestrian walks in the roadway in the same direction, also occupying the travel path. A small white van stands along the left roadside and rows of parked scooters and bicycles line both curbs, further narrowing the corridor.", "hazard_reasoning": "There is a woman wearing a pair of black shorts, a black top, sandal shoes, a cap, carrying a handbag, pulling a gray suitcase, on the right side of the road. She may inadvertently step into the travel lane while handling her luggage, so the driver should manoeuvre carefully around her to avoid collision."}
{"id": "train_05313", "split": "train", "clip_key": "2020-0228-102841_003522_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "003522"}, "frames": ["2020-0228-102841_003522_movie_t-3.jpg", "2020-0228-102841_003522_movie_t-2.jpg", "2020-0228-102841_003522_movie_t-1.jpg", "2020-0228-102841_003522_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of crossing pedestrian", "environment_perception": "An urban neighborhood intersection with narrow two-way streets lies ahead, with smooth pavement and no median, and traffic is light with no moving vehicles. Ahead in the middle of the intersection, a pedestrian wearing a black shirt and black pants walks from the left curb toward the right, crossing the ego vehicle's path. On the near right corner, another pedestrian steps off the curb and crosses slowly toward the center, also moving across the front of the vehicle. A person on the left sidewalk walks away along the curb without entering the roadway. Pink cones and small barricades line both corners and slightly narrow the entry to the side street.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants and walking from the left side of the road towards the right side. The pedestrian is crossing the road ahead and may enter the vehicle's path, so the driver should be cautious to anticipate their movement."}
{"id": "train_05314", "split": "train", "clip_key": "2020-0207-151349_032369_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "032369"}, "frames": ["2020-0207-151349_032369_movie_t-3.jpg", "2020-0207-151349_032369_movie_t-2.jpg", "2020-0207-151349_032369_movie_t-1.jpg", "2020-0207-151349_032369_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial runs under an elevated expressway, the pavement smooth and traffic moving slowly in the same direction. A white box truck is directly ahead in the ego lane and slows, constraining the ego car's pace. To the right, a dark sedan slightly ahead proceeds in the adjacent lane at a similar slow speed, occupying the space beside the ego vehicle. Along the left lane near the curb, a line of cars including a white minivan is stopped or crawling, limiting usable space in that lane. A metal barrier lines the far right edge of the roadway.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane. You should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_05315", "split": "train", "clip_key": "2020-0131-135401_002360_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "002360"}, "frames": ["2020-0131-135401_002360_movie_t-3.jpg", "2020-0131-135401_002360_movie_t-2.jpg", "2020-0131-135401_002360_movie_t-1.jpg", "2020-0131-135401_002360_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban, narrow two-way street with a solid center line and smooth pavement runs between close-set buildings, and traffic is light. A white truck is stopped directly ahead in the ego lane, in front of the car, blocking the path and forcing the ego vehicle to wait. Two pedestrians move along the left sidewalk by storefronts and stay off the roadway. The oncoming lane remains clear.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The stopped truck blocks the view ahead, so you must stop to avoid collision."}
{"id": "train_05316", "split": "train", "clip_key": "2020-0226-140503_046983_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "046983"}, "frames": ["2020-0226-140503_046983_movie_t-3.jpg", "2020-0226-140503_046983_movie_t-2.jpg", "2020-0226-140503_046983_movie_t-1.jpg", "2020-0226-140503_046983_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane divided road with a metal railing median and wet pavement, where traffic is heavy and bunches to a stop. A white sedan directly ahead in the ego lane, a police car, is stopped because the signal ahead shows red, holding the ego vehicle. To the right, a white van in the adjacent same-direction lane also queues and comes to a stop, limiting an immediate lane change. Farther left ahead, another light van rolls forward with brake lights on, maintaining the queue. Beyond the railing on the opposite carriageway, several oncoming vans progress past the junction.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. Stop to avoid a collision with the halted vehicle at the red light."}
{"id": "train_05317", "split": "train", "clip_key": "2020-0210-155354_022892_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-155354_022892_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-155354_022892_movie_t-3_augB1.jpg", "2020-0210-155354_022892_movie_t-2_augB1.jpg", "2020-0210-155354_022892_movie_t-1_augB1.jpg", "2020-0210-155354_022892_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road with smooth asphalt runs between a stone retaining wall and mid-rise buildings, and same-direction traffic moves slowly in heavy congestion. Directly ahead in the ego lane, a black van slows with the queue, constraining the ego vehicle's pace. Slightly ahead in the adjacent right lane, a silver minivan creeps forward in parallel and could block any move right. Near the right edge, a white commercial van travels alongside at low speed, holding position beside the ego car. An overhead blue guide sign indicates destinations with arrows and notes a split in 180 m, while several trucks farther ahead contribute to the slow flow.", "hazard_reasoning": "There is a black van slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe distance and avoid a potential collision."}
{"id": "train_05318", "split": "train", "clip_key": "2020-0131-135401_003804_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003804"}, "frames": ["2020-0131-135401_003804_movie_t-3.jpg", "2020-0131-135401_003804_movie_t-2.jpg", "2020-0131-135401_003804_movie_t-1.jpg", "2020-0131-135401_003804_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with single narrow lanes in each direction has smooth asphalt and a marked centerline; traffic is light but the ego lane is blocked. A white box truck is stopped directly ahead in the ego lane in front of the ego car, holding the ego vehicle stationary. A cyclist approaches in the oncoming lane at the right edge and passes beside the truck, occupying the space alongside it. Two pedestrians walk on the left sidewalk ahead, remaining off the roadway. An overhead 40 speed limit sign is visible.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The stopped truck blocks the lane and requires the driver to stop immediately to avoid a collision."}
{"id": "train_05319", "split": "train", "clip_key": "titan_clip_968_000120_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_968_000120_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_968_000120_movie_t-3_augB1.jpg", "titan_clip_968_000120_movie_t-2_augB1.jpg", "titan_clip_968_000120_movie_t-1_augB1.jpg", "titan_clip_968_000120_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way residential street with one narrow lane per direction, no median, and smooth pavement is shown; traffic is light with no visible oncoming vehicles. Ahead in the left-side ego lane, a work truck stands stopped partly in the roadway, narrowing the passage and constraining the pace. A man dressed in white pants and a white shirt stands in the roadway close to the truck directly ahead of the ego-car, attending to the vehicle and temporarily occupying the ego path. On the right edge, a compact excavator and work materials are parked tight to the lane and present roadside obstacles.", "hazard_reasoning": "There is a man dressed in white pants and a white shirt, standing in the middle of the road in front of the ego-car. The pedestrian is in the vehicle's path and could be struck if the driver does not stop immediately."}
{"id": "train_05320", "split": "train", "clip_key": "titan_clip_911_000390_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_911_000390_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_911_000390_movie_t-3_augB1.jpg", "titan_clip_911_000390_movie_t-2_augB1.jpg", "titan_clip_911_000390_movie_t-1_augB1.jpg", "titan_clip_911_000390_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "A narrow urban commercial street has a single shared lane with no median; the pavement is worn but intact, and vehicle flow is light while pedestrian activity is heavy. Ahead on the left, a pedestrian in a blue T-shirt walks toward the ego car, stepping out because a white van is stopped along the curb and occupying part of the lane. Farther ahead in the center, a cyclist approaches oncoming along the middle of the lane and is directly in the ego path. Other pedestrians ahead and to the right walk toward and along the roadway, edging near the lane and constraining the ego's pace. Bicycles and shop displays line both sides, narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a blue T-shirt, walking towards the ego car, because of a white van parked on the left side of the road. The pedestrian may step into the lane to bypass the parked van, so the driver should yield to allow safe crossing."}
{"id": "train_05321", "split": "train", "clip_key": "titan_clip_1377_000360_movie", "source": {"subset": "titan", "scenario": "clip_1377", "frame": "000360"}, "frames": ["titan_clip_1377_000360_movie_t-3.jpg", "titan_clip_1377_000360_movie_t-2.jpg", "titan_clip_1377_000360_movie_t-1.jpg", "titan_clip_1377_000360_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "An urban narrow two-way street with one lane per direction runs between close-set buildings; the pavement looks smooth and traffic is light. A white van is stopped at the left curb ahead, encroaching on the ego lane and narrowing the passage. A pedestrian in a blue shirt and black pants walks toward the ego along the left side, moving around the parked vehicle and may enter the ego lane. Farther ahead an oncoming white car approaches in the opposing lane with clear separation. Bicycles sit on the right sidewalk and a small caution sign stands near a driveway.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, and walking towards the ego car, on the left side of the road, because of the parked vehicle. The driver should carefully manoeuvre around the pedestrian to maintain a safe clearance and avoid collision."}
{"id": "train_05322", "split": "train", "clip_key": "2020-0210-155354_044336_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "044336"}, "frames": ["2020-0210-155354_044336_movie_t-3.jpg", "2020-0210-155354_044336_movie_t-2.jpg", "2020-0210-155354_044336_movie_t-1.jpg", "2020-0210-155354_044336_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane two-way road with fenced sidewalks and a pedestrian overpass is seen, the dry pavement carrying heavy, slow traffic with a queue in the ego direction. A white sedan directly ahead in the ego lane is stopped because of congestion and blocks the ego's path. A second vehicle farther ahead in the same lane also waits, extending the line of stopped cars. Oncoming vehicles in the right-side lane pass steadily without turning. A small white car near the left curb slightly ahead creeps forward along the edge and could merge into the ego lane. A round 50 speed limit sign and a time-restricted no-stopping sign are visible on the left.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Stopping will prevent a collision with the halted sedan."}
{"id": "train_05323", "split": "train", "clip_key": "2020-0203-154554_079522_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "079522"}, "frames": ["2020-0203-154554_079522_movie_t-3.jpg", "2020-0203-154554_079522_movie_t-2.jpg", "2020-0203-154554_079522_movie_t-1.jpg", "2020-0203-154554_079522_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for the stopped vehicle ahead", "environment_perception": "An urban two-way street with one lane each direction runs between mid-rise buildings and winter trees, divided by a painted chevron median; the pavement is dry, and traffic is heavy oncoming but only moderate in the ego direction, which slows toward a distant queue. A dark hatchback ahead in the ego lane reduces speed and effectively sets the ego vehicle's pace. To the right, the prominent white sedan the caption mentions is actually in the oncoming lane and creeps forward within the congested queue. Farther right ahead, a white truck also inches along with the same oncoming jam. Low sun glare ahead slightly reduces contrast.", "hazard_reasoning": "A white sedan stopped in the ego lane because of the traffic congestion ahead. The sedan's sudden stop indicates a traffic queue, so the driver must maintain a safe distance and be prepared to stop to avoid a collision."}
{"id": "train_05324", "split": "train", "clip_key": "titan_clip_811_000240_movie", "source": {"subset": "titan", "scenario": "clip_811", "frame": "000240"}, "frames": ["titan_clip_811_000240_movie_t-3.jpg", "titan_clip_811_000240_movie_t-2.jpg", "titan_clip_811_000240_movie_t-1.jpg", "titan_clip_811_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on left side of the road", "environment_perception": "An urban residential street is narrow and two-way with edge lines but no center divider; the pavement appears worn yet intact, and traffic is light. On the right near the curb, a bicyclist travels ahead in the same direction at low speed, effectively setting the pace. On the left side, a pedestrian in a blue shirt and black pants walks away along the curb close to the ego lane. Far ahead in the roadway, another cyclist moves away toward the distance. Several vans and small trucks are parked along the right shoulder, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, and walking away from the ego car, on the left side of the road. The pedestrian is close to the roadway and could step into traffic unexpectedly, so the driver should stay vigilant and anticipate any crossing movements."}
{"id": "train_05325", "split": "train", "clip_key": "titan_clip_389_000204_movie", "source": {"subset": "titan", "scenario": "clip_389", "frame": "000204"}, "frames": ["titan_clip_389_000204_movie_t-3.jpg", "titan_clip_389_000204_movie_t-2.jpg", "titan_clip_389_000204_movie_t-1.jpg", "titan_clip_389_000204_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked truck", "environment_perception": "A narrow urban commercial street with interlocking-brick pavement and no centerline stretches ahead, and traffic is light with no moving vehicles nearby; a fresh patch and uneven surface appear by the right curb. A white truck is parked on the left side of the road, partly intruding into the travel lane and narrowing the ego-vehicle's path. On the right, a person stands beside cones and a folding barrier at a cordoned construction area but remains out of the lane. Farther ahead, a few pedestrians move along the sidewalks, and several bicycles are parked at the curb near a shopfront.", "hazard_reasoning": "There is a white truck parked on the left side of the road. The parked vehicle reduces available lane width and may force the driver to adjust their path or slow down to avoid collision, so the driver should be aware of it."}
{"id": "train_05326", "split": "train", "clip_key": "2020-0129-144857_086745_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "086745"}, "frames": ["2020-0129-144857_086745_movie_t-3.jpg", "2020-0129-144857_086745_movie_t-2.jpg", "2020-0129-144857_086745_movie_t-1.jpg", "2020-0129-144857_086745_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated road with two same-direction lanes climbs between apartment buildings, with smooth pavement and red flexible bollards guarding a merge gore; traffic is light and flows steadily uphill. A white van ahead in the ego lane drives away from the camera, gradually widening the gap and setting the pace. A white sedan slightly ahead in the adjacent right lane continues parallel at a similar speed without affecting the ego path. Farther up near the crest, a small box truck proceeds in its lane as a distant lead vehicle. Red-and-white bollards and chevron markings clearly delineate the right-side taper where a merging lane ends.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05327", "split": "train", "clip_key": "2020-0220-102630_048804_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "048804"}, "frames": ["2020-0220-102630_048804_movie_t-3.jpg", "2020-0220-102630_048804_movie_t-2.jpg", "2020-0220-102630_048804_movie_t-1.jpg", "2020-0220-102630_048804_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way road with a painted center divider and smooth pavement shows moderate, mostly steady flow. A black van ahead in the ego lane slows because a large truck is stopped along the left side of the road, narrowing that edge and constraining the van's pace. The truck remains stationary at the left curb, partly encroaching on the leftmost lane and posing a near-lane obstruction for vehicles in our direction. On the opposite side to the right, an oncoming semi-truck and several cars approach in their lanes without affecting the ego path. Overhead blue directional signs hang above the roadway.", "hazard_reasoning": "There is a black van slowing in the ego lane because of the truck parked on the left side of the road. The van's sudden deceleration may require you to brake abruptly to maintain a safe following distance and avoid a collision."}
{"id": "train_05328", "split": "train", "clip_key": "titan_clip_116_000534_movie", "source": {"subset": "titan", "scenario": "clip_116", "frame": "000534"}, "frames": ["titan_clip_116_000534_movie_t-3.jpg", "titan_clip_116_000534_movie_t-2.jpg", "titan_clip_116_000534_movie_t-1.jpg", "titan_clip_116_000534_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban one-lane street runs between tall buildings, the pavement looks smooth and traffic is light. Two pedestrians in white shirts and black pants are in the middle of the road ahead, crossing from the right toward the left side of the lane, directly occupying the ego vehicle's path. A small white car continues farther ahead in the same direction at a steady pace. A white box truck stands along the right curb near the camera, narrowing the usable lane.", "hazard_reasoning": "There are two pedestrians in the middle of the road, wearing black pants and a white shirt, crossing to the left side of the lane. These pedestrians are crossing ahead in your lane, so you should slow down to avoid a potential collision."}
{"id": "train_05329", "split": "train", "clip_key": "2020-0210-101957_069592_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "069592"}, "frames": ["2020-0210-101957_069592_movie_t-3.jpg", "2020-0210-101957_069592_movie_t-2.jpg", "2020-0210-101957_069592_movie_t-1.jpg", "2020-0210-101957_069592_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential two-way road has a single narrow lane per direction, no median, smooth asphalt, and light traffic. The ego vehicle proceeds in the left lane with utility poles, walls, and buildings close to the curb limiting shoulder space. A white van ahead in the ego lane drives away from the ego car, moving steadily forward and gently setting the pace. No oncoming traffic or pedestrians are visible, and no vehicles appear to be merging from side streets. Parked trucks sit inside a fenced lot on the left without obstructing the roadway.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. The van could brake suddenly, so maintain a safe distance and follow as advised."}
{"id": "train_05330", "split": "train", "clip_key": "2020-0210-101957_019781_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "019781"}, "frames": ["2020-0210-101957_019781_movie_t-3.jpg", "2020-0210-101957_019781_movie_t-2.jpg", "2020-0210-101957_019781_movie_t-1.jpg", "2020-0210-101957_019781_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes has smooth pavement and heavy traffic queued at an intersection. A motorcycle of undetermined color is stopped directly ahead of the ego vehicle at a red light, occupying the ego lane and setting the pace. A small white van stands a short distance farther ahead in the same lane, also waiting at the signal and constraining the gap. To the right, a large silver box truck is stopped in the adjacent lane slightly ahead, partially blocking the forward view. On the left, a black minivan in the neighboring lane waits beside the ego car as the queue holds. An overhead blue guide sign with route information is visible above the roadway.", "hazard_reasoning": "There is a motorcycle of undetermined color, stopped in front of the ego car, because of a red traffic light. The driver needs to stop to avoid colliding with the halted motorcycle at the red light."}
{"id": "train_05331", "split": "train", "clip_key": "titan_clip_785_000198_movie", "source": {"subset": "titan", "scenario": "clip_785", "frame": "000198"}, "frames": ["titan_clip_785_000198_movie_t-3.jpg", "titan_clip_785_000198_movie_t-2.jpg", "titan_clip_785_000198_movie_t-1.jpg", "titan_clip_785_000198_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "In an urban underpass, the ego vehicle proceeds along a narrow single-lane road bordered by concrete walls and fencing. The pavement is dry and smooth, and traffic is light with no other motor vehicles visible. Ahead in the same corridor, a cyclist wearing a blue shirt and grey pants rides toward the ego vehicle along the right side, occupying part of the travel lane and directly opposing the ego path. On the right shoulder against the wall, a pedestrian sits and remains stationary close to the edge but outside the lane. A dark bollard stands near the center-left ahead, locally narrowing the passage.", "hazard_reasoning": "There is a cyclist wearing a blue shirt and grey pants, and cycling toward the ego car. The cyclist is moving into the vehicle's path and may cross in front, so the driver should yield to avoid a collision."}
{"id": "train_05332", "split": "train", "clip_key": "titan_clip_238_000264_movie", "source": {"subset": "titan", "scenario": "clip_238", "frame": "000264"}, "frames": ["titan_clip_238_000264_movie_t-3.jpg", "titan_clip_238_000264_movie_t-2.jpg", "titan_clip_238_000264_movie_t-1.jpg", "titan_clip_238_000264_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "A tight urban street with buildings close on both sides forms a narrow single carriageway without a centerline and smooth pavement, with light traffic as the ego vehicle moves slowly ahead. A pedestrian wearing a white coat walks toward the camera along the right edge of the road, close to the travel lane and potentially entering the ego path. A white truck is stopped at the right curb near the foreground, protruding slightly into the lane and narrowing the clearance. Another person stands by cones on the right sidewalk ahead, remaining within the work area. A 30 speed-limit sign and a no-parking sign are visible on the left.", "hazard_reasoning": "There is a pedestrian wearing a white coat, walking on the right side of the road, towards the ego car. The driver should be cautious because the pedestrian may step into the lane unexpectedly, posing a collision risk."}
{"id": "train_05333", "split": "train", "clip_key": "titan_clip_989_000390_movie", "source": {"subset": "titan", "scenario": "clip_989", "frame": "000390"}, "frames": ["titan_clip_989_000390_movie_t-3.jpg", "titan_clip_989_000390_movie_t-2.jpg", "titan_clip_989_000390_movie_t-1.jpg", "titan_clip_989_000390_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Yield to the cyclist", "environment_perception": "An urban two-way street with a single narrow lane each way and no median runs past small shops; the pavement is dry and traffic is light to moderate as oncoming vehicles pass steadily. A pedestrian crosses from the left directly ahead in the ego lane, occupying the path and constraining the ego's pace. On the left edge further ahead, a cyclist in an orange T-shirt rides toward the ego car along the carriageway, using it because there is no bike lane or sidewalk and potentially edging into the lane. In the opposing lane, a scooter approaches near the centerline and continues straight, reducing lateral clearance as it comes by.", "hazard_reasoning": "There is a pedestrian wearing an orange t-shirt and cycling towards the ego car, on the left side of the road, because there is no bike lane or sidewalk. The cyclist is moving into the vehicle's path without separation, so the driver should yield to ensure their safety."}
{"id": "train_05334", "split": "train", "clip_key": "2020-0207-151349_089850_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "089850"}, "frames": ["2020-0207-151349_089850_movie_t-3.jpg", "2020-0207-151349_089850_movie_t-2.jpg", "2020-0207-151349_089850_movie_t-1.jpg", "2020-0207-151349_089850_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban divided arterial with two lanes in the ego direction merges into a single lane, separated from opposing traffic by a metal fence median. The pavement is dry, and traffic is light on the ego side while the opposite flow is moderate under strong sun glare ahead. A black motorcycle travels ahead in the ego lane and pulls away as the road opens, moving straight and remaining in our path only briefly. To the right beyond the median, a stream of oncoming cars moves steadily toward the camera without interacting with the ego lane. Overhead gantries and signs are visible, with no signals affecting movement.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane, away from the ego car, because the road ahead is clear. You should follow the vehicle ahead to maintain safe spacing and anticipate stopping for the red light."}
{"id": "train_05335", "split": "train", "clip_key": "2020-0203-114632_092615_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "092615"}, "frames": ["2020-0203-114632_092615_movie_t-3.jpg", "2020-0203-114632_092615_movie_t-2.jpg", "2020-0203-114632_092615_movie_t-1.jpg", "2020-0203-114632_092615_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of white hatchback changing lanes", "environment_perception": "An urban multilane road runs beneath an elevated viaduct, with two same-direction lanes and guardrails; the asphalt looks smooth and traffic is light. A white minivan ahead in the ego lane travels steadily, setting the pace. Slightly farther ahead, a white hatchback changes from the ego lane to the left lane in front of the ego car, moving across smoothly. Another white car continues ahead in the left lane at a similar speed, remaining parallel to the ego path. No salient signals or pedestrians are visible.", "hazard_reasoning": "There is a white hatchback lane changing in front of the ego car, from the ego lane to the left lane. The hatchback's merge into the adjacent lane could intersect the ego vehicle's path, so the driver should be aware and adjust speed or position to maintain a safe distance."}
{"id": "train_05336", "split": "train", "clip_key": "2020-0205-103411_109487_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "109487"}, "frames": ["2020-0205-103411_109487_movie_t-3.jpg", "2020-0205-103411_109487_movie_t-2.jpg", "2020-0205-103411_109487_movie_t-1.jpg", "2020-0205-103411_109487_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a narrow raised median separates opposing traffic; the surface is dry and flow is light to moderate as the view approaches a signalized junction. A white minivan ahead in the ego lane pulls away, continuing straight and widening the gap, consistent with the green light visible at the intersection. An oncoming box truck moves toward the camera in its lane across the median, posing no conflict. A white car is stopped at the left curb near the camera, remaining outside the lane. Overhead traffic signals ahead appear green, and roadside businesses and guardrails line both sides.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05337", "split": "train", "clip_key": "2020-0203-114632_032474_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "032474"}, "frames": ["2020-0203-114632_032474_movie_t-3.jpg", "2020-0203-114632_032474_movie_t-2.jpg", "2020-0203-114632_032474_movie_t-1.jpg", "2020-0203-114632_032474_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane road approaches a wide signalized intersection with smooth pavement and a low hedge median on the right, and traffic flows at a moderate pace. Ahead, a white van drives in the ego lane and continues away through the junction, remaining directly in our path. Along the left curb just before the crosswalk, a delivery box truck is stopped with its rear open, occupying part of the outer lane and forming a roadside obstruction. A dense line of pedestrians waits on the left sidewalk near the crosswalk, while a single person stands by the right-side refuge, both close to the crossing but not entering the roadway.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. The vehicle ahead may change speed unexpectedly, so maintain a safe following distance under this situation."}
{"id": "train_05338", "split": "train", "clip_key": "2020-0131-135401_057358_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "057358"}, "frames": ["2020-0131-135401_057358_movie_t-3.jpg", "2020-0131-135401_057358_movie_t-2.jpg", "2020-0131-135401_057358_movie_t-1.jpg", "2020-0131-135401_057358_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes is divided from oncoming lanes by a low post-and-rail median; the pavement is smooth and dry, and traffic is heavy and slow near a pedestrian overpass. A silver sedan ahead in the ego lane slows because of traffic congestion ahead, constraining the ego vehicle's pace. To the right, a white hatchback in the adjacent lane also reduces speed with the queue, staying just ahead and limiting a pass. Farther ahead, several vans and cars in the middle and right lanes brake and bunch together under blue overhead direction signs.", "hazard_reasoning": "There is a silver sedan slowing in the ego lane, away from the ego car, because of traffic congestion ahead. The silver sedan's deceleration indicates slowing traffic, so the driver should reduce speed to maintain a safe following distance and avoid a collision."}
{"id": "train_05339", "split": "train", "clip_key": "2020-0213-143552_054376_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "054376"}, "frames": ["2020-0213-143552_054376_movie_t-3.jpg", "2020-0213-143552_054376_movie_t-2.jpg", "2020-0213-143552_054376_movie_t-1.jpg", "2020-0213-143552_054376_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane per direction runs under overhead signs, bordered by curbs and guardrails, and the pavement appears smooth; traffic in the ego's direction is halted. A white box truck is directly ahead in the ego lane and stationary, holding the ego car at a standstill. Farther ahead to the right, cars on a cross street move across the intersection, not entering the ego lane. Oncoming vehicles travel on the far right beyond a raised separator and continue independently. A pedestrian on the left sidewalk walks toward the junction behind a guardrail, remaining clear of the roadway. Overhead traffic signals are present at the intersection ahead, though their aspect is not visible.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The driver should stop to avoid colliding with the halted vehicle ahead."}
{"id": "train_05340", "split": "train", "clip_key": "2020-0205-152530_032098_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "032098"}, "frames": ["2020-0205-152530_032098_movie_t-3.jpg", "2020-0205-152530_032098_movie_t-2.jpg", "2020-0205-152530_032098_movie_t-1.jpg", "2020-0205-152530_032098_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane boulevard with smooth pavement carries light to moderate same-direction flow under clear daylight, with no obvious median changes during the clip. A white sedan ahead in the ego lane slows as traffic bunches farther ahead, briefly dictating the ego car's pace. In the lane to the right, a dark hatchback continues at a similar speed slightly ahead, reducing immediate room for a pass. Farther right, a white van and other cars proceed steadily within their lanes without encroaching on the ego path. Chevron markings indicate a tapering merge area ahead, and no signals are clearly visible.", "hazard_reasoning": "There is a white sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of traffic ahead."}
{"id": "train_05341", "split": "train", "clip_key": "2020-0131-103016_010041_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "010041"}, "frames": ["2020-0131-103016_010041_movie_t-3.jpg", "2020-0131-103016_010041_movie_t-2.jpg", "2020-0131-103016_010041_movie_t-1.jpg", "2020-0131-103016_010041_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban junction beneath a railway overpass features a single-lane approach with cones and a curbside barrier; the wet pavement reflects light and overall traffic is heavy and slow. A black sedan directly ahead in the ego lane is stopped due to congestion, holding the ego vehicle's pace. To the right along the main road under the bridge, several white vans and cars queue and inch forward, reducing gaps for merging traffic. On the left by the posts, a cyclist waits near the corner and remains out of the lane. A triangular stop sign stands on the right at the merge and a 40 km/h sign is posted.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego vehicle, because of traffic congestion ahead. The driver should stop promptly to maintain a safe distance and avoid colliding with the stationary vehicle ahead."}
{"id": "train_05342", "split": "train", "clip_key": "2020-0226-140503_059298_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "059298"}, "frames": ["2020-0226-140503_059298_movie_t-3.jpg", "2020-0226-140503_059298_movie_t-2.jpg", "2020-0226-140503_059298_movie_t-1.jpg", "2020-0226-140503_059298_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the white van.", "environment_perception": "An urban commercial street with a narrow two-way carriageway has smooth pavement and light traffic, with no median and an empty oncoming side. Far ahead on the left, a white van is parked at the curb because of an emergency, narrowing the same-direction side of the road and potentially constraining the ego vehicle's path. Pedestrians populate both sidewalks; a person near the left curb stands facing the roadway while others on the right walk close to the edge, their proximity making them relevant to the ego lane. Bollards and shop signboards line the curbs, but the travel lane itself remains clear apart from the parked van.", "hazard_reasoning": "There is a white van parked on the left side of the road, away from the ego car, because of an emergency. The driver should carefully manoeuvre around the white van to maintain safe clearance and avoid collision."}
{"id": "train_05343", "split": "train", "clip_key": "2020-0131-135401_016971_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "016971"}, "frames": ["2020-0131-135401_016971_movie_t-3.jpg", "2020-0131-135401_016971_movie_t-2.jpg", "2020-0131-135401_016971_movie_t-1.jpg", "2020-0131-135401_016971_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with smooth pavement runs between tall buildings, bordered by a right-side guardrail and an elevated expressway ahead; traffic is moderate and compresses toward a signalized junction. A black compact hatchback ahead in the ego lane is stopped at the red light, constraining the ego car. A white minivan slightly ahead in the adjacent right lane creeps toward the same stop line, limiting any chance to change lanes. Farther ahead, a small queue of vehicles in both lanes remains slow near the intersection. Overhead direction boards are visible, and the signal facing the ego approach shows red.", "hazard_reasoning": "There is a black compact hatchback stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver should stop now to avoid colliding with the halted vehicle ahead at the red signal."}
{"id": "train_05344", "split": "train", "clip_key": "titan_clip_581_000264_movie", "source": {"subset": "titan", "scenario": "clip_581", "frame": "000264"}, "frames": ["titan_clip_581_000264_movie_t-3.jpg", "titan_clip_581_000264_movie_t-2.jpg", "titan_clip_581_000264_movie_t-1.jpg", "titan_clip_581_000264_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians on left", "environment_perception": "An urban narrow two-way street with no median runs between mid-rise buildings; the pavement looks worn but intact and traffic is light. A white work truck sits at the left curb near the ego vehicle, effectively narrowing the lane and constraining the approach. Farther ahead on the left side of the road, a group of pedestrians stands near blue construction cones, remaining at the edge and potentially close to the travel path. Scaffolding covers a building on the right and a parked van sits by it, while numerous cones line the left, creating a mildly constricted corridor.", "hazard_reasoning": "There are a group of pedestrians standing on the left side of the road. The driver should be aware of their presence as they may step onto the roadway unexpectedly."}
{"id": "train_05345", "split": "train", "clip_key": "titan_clip_722_000450_movie", "source": {"subset": "titan", "scenario": "clip_722", "frame": "000450"}, "frames": ["titan_clip_722_000450_movie_t-3.jpg", "titan_clip_722_000450_movie_t-2.jpg", "titan_clip_722_000450_movie_t-1.jpg", "titan_clip_722_000450_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane in each direction, no median, and patched but serviceable asphalt carries light traffic as the ego vehicle proceeds in the left lane. A pedestrian in a black T-shirt and black pants runs from the left sidewalk to the right directly in front of the ego car, crossing the ego lane and creating a close conflict. Far ahead in the same direction, a small orange mini-truck moves slowly near the lane center, modestly constraining the ego vehicle's pace. Several pedestrians stand along the left curb beside parked bicycles outside shops, close to the roadway but remaining on the sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and black pants, and running across the street from the left to the right, in front of the ego car. The driver should slow down because the pedestrian is unpredictably crossing the lane directly ahead, increasing collision risk without reducing speed."}
{"id": "train_05346", "split": "train", "clip_key": "titan_clip_196_000264_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_196_000264_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_196_000264_movie_t-3_augB1.jpg", "titan_clip_196_000264_movie_t-2_augB1.jpg", "titan_clip_196_000264_movie_t-1_augB1.jpg", "titan_clip_196_000264_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down for cyclist near construction cones", "environment_perception": "A narrow urban two-way street between tall buildings has a single undivided lane with smooth pavement, and traffic flows lightly at a steady pace. On the left edge ahead, a cyclist in a white shirt and black pants rides away from the ego vehicle along a line of construction cones due to roadside work, and may drift into the ego lane. Farther ahead in the same direction, a white car followed by a blue truck proceeds slowly through the narrowed section, setting the pace. Several pedestrians walk on both sidewalks near the curbs without stepping into the road. Orange cones and work activity occupy the left margin, temporarily narrowing the usable lane.", "hazard_reasoning": "There is a cyclist wearing a white shirt and black pants, and cycling on the left side of the road, away from the ego-car, because of construction work on the left. The cyclist's path is shifted toward the vehicle's lane by the cones, requiring the driver to slow down to maintain a safe distance and avoid collision."}
{"id": "train_05347", "split": "train", "clip_key": "2020-0217-144444_014165_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "014165"}, "frames": ["2020-0217-144444_014165_movie_t-3.jpg", "2020-0217-144444_014165_movie_t-2.jpg", "2020-0217-144444_014165_movie_t-1.jpg", "2020-0217-144444_014165_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around it", "environment_perception": "An urban street with two same-direction lanes and smooth pavement runs between a fenced rail embankment on the left and shops on the right, with light traffic that slows near an obstruction ahead. A black hatchback directly in front of the ego vehicle shifts to the right lane to pass a small white truck stopped farther ahead in the left lane, matching the note that it changes right because of the truck. The white box truck stands in the left lane and temporarily constrains the ego car's pace. Several pedestrians walk along the right sidewalk by storefronts but remain off the roadway.", "hazard_reasoning": "There is a black hatchback changing to the right lane because of a truck stopped ahead, in front of the ego car. The hatchback's sudden lane change due to the stopped truck may require quick driver response, so the driver should manoeuvre carefully around it."}
{"id": "train_05348", "split": "train", "clip_key": "titan_clip_679_000228_movie", "source": {"subset": "titan", "scenario": "clip_679", "frame": "000228"}, "frames": ["titan_clip_679_000228_movie_t-3.jpg", "titan_clip_679_000228_movie_t-2.jpg", "titan_clip_679_000228_movie_t-1.jpg", "titan_clip_679_000228_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow", "environment_perception": "An urban commercial street with a single narrow lane and no median runs ahead on smooth asphalt; traffic is very light with only pedestrians visible. Ahead in the center of the lane, a pedestrian in a white shirt and black pants walks away from the ego vehicle, remaining in its path but at a distance. On the left near the curb, a woman steps off the sidewalk and begins to cross toward the center, potentially entering the lane. Farther ahead near the right storefronts, another person walks along the curb in the same direction, staying clear. A blue-and-red prohibition sign and rows of orange cones line the street, narrowing the usable lane near shop displays.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking in front of the ego car but away from it. The pedestrian could unexpectedly veer into the vehicle's path, so the driver should slow to maintain a safe distance."}
{"id": "train_05349", "split": "train", "clip_key": "titan_clip_797_000570_movie", "source": {"subset": "titan", "scenario": "clip_797", "frame": "000570"}, "frames": ["titan_clip_797_000570_movie_t-3.jpg", "titan_clip_797_000570_movie_t-2.jpg", "titan_clip_797_000570_movie_t-1.jpg", "titan_clip_797_000570_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the gray van", "environment_perception": "A narrow urban one-way road runs between buildings, the pavement smooth and traffic very light. A pedestrian ahead from the right steps onto the marked crosswalk and walks left across the ego vehicle's path, temporarily occupying the lane. Farther ahead on the right, a gray van is parked in the ego lane, narrowing the roadway and posing a static obstruction. No other moving vehicles are visible and no active traffic signals appear.", "hazard_reasoning": "There is a gray van ahead that parked in the ego lane, on the right side of the road. Since this van obstructs the driving lane, the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_05350", "split": "train", "clip_key": "titan_clip_580_000174_movie", "source": {"subset": "titan", "scenario": "clip_580", "frame": "000174"}, "frames": ["titan_clip_580_000174_movie_t-3.jpg", "titan_clip_580_000174_movie_t-2.jpg", "titan_clip_580_000174_movie_t-1.jpg", "titan_clip_580_000174_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single narrow lane each way runs between apartments and a park; the pavement is patched and dry, and traffic is light with the oncoming lane empty. Along the left curb ahead, several parked cars line the roadway, and just past the small intersection a white sedan is parked on the left, narrowing the ego lane. A white van is stopped at the right curb beyond the intersection without encroaching into the roadway. Two blue traffic cones sit in the left portion of the ego lane before the intersection, pushing the path toward the center.", "hazard_reasoning": "There is a white sedan parked on the left side of the road behind the intersection ahead of the ego-car. This parked vehicle may block the driver's view of cross traffic or pedestrians at the intersection, so the driver should slow down to anticipate hidden hazards."}
{"id": "train_05351", "split": "train", "clip_key": "titan_clip_1349_000276_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1349_000276_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1349_000276_movie_t-3_augB1.jpg", "titan_clip_1349_000276_movie_t-2_augB1.jpg", "titan_clip_1349_000276_movie_t-1_augB1.jpg", "titan_clip_1349_000276_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrian", "environment_perception": "An urban narrow single-lane street without a centerline runs between buildings, the pavement dry and traffic light. A white sedan ahead in the ego lane slows near a junction as a pedestrian wearing a white T-shirt and black pants is in the middle of the road crossing from right to left across the travel path. On the right sidewalk, another pedestrian walks close to the curb parallel to traffic, and a third person stands farther ahead by the curb. A yield sign stands at the junction ahead, and rows of parked scooters line the left behind guardrails.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and black pants, in the middle of the road, crossing the street from the right side of the street to the left side. The pedestrian is stepping into the travel lane and may enter the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_05352", "split": "train", "clip_key": "2020-0218-103119_017496_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "017496"}, "frames": ["2020-0218-103119_017496_movie_t-3.jpg", "2020-0218-103119_017496_movie_t-2.jpg", "2020-0218-103119_017496_movie_t-1.jpg", "2020-0218-103119_017496_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial carries two lanes in the ego direction with a chevroned painted median and dry, slightly worn pavement, and traffic is moderate to heavy with slowing flow near an intersection. A white hatchback directly ahead in the ego lane slows and gradually pulls away from the camera because of congestion ahead. To its left, a large box truck in the adjacent same-direction lane also decelerates, constraining forward visibility and pacing the movement. On the right side beyond the median markings, oncoming vans and cars proceed steadily in their lanes without interacting with the ego path. Distant overhead signals are visible but their aspects are unclear.", "hazard_reasoning": "There is a white hatchback slowing down in the ego lane, moving away from the ego car, because of traffic congestion ahead. Slow down to maintain a safe distance as the vehicle ahead reduces speed due to congestion."}
{"id": "train_05353", "split": "train", "clip_key": "2020-0221-115122_017669_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "017669"}, "frames": ["2020-0221-115122_017669_movie_t-3.jpg", "2020-0221-115122_017669_movie_t-2.jpg", "2020-0221-115122_017669_movie_t-1.jpg", "2020-0221-115122_017669_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under an elevated expressway, with smooth asphalt and a right-side guardrail, and traffic is heavy and mostly stopped. A white van directly ahead in the ego lane is stopped because of congestion ahead and blocks the ego car's path. In the right adjacent lane, another small white van slows on the painted gore beside the guardrail, likely queuing and edging toward the main flow. To the left, a line of compact cars waits or creeps forward alongside and slightly ahead, constraining available gaps. No salient signals or posted speeds are visible, and there are no pedestrians or cyclists.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, due to traffic congestion ahead. The driver should stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_05354", "split": "train", "clip_key": "2020-0129-105040_050101_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "050101"}, "frames": ["2020-0129-105040_050101_movie_t-3.jpg", "2020-0129-105040_050101_movie_t-2.jpg", "2020-0129-105040_050101_movie_t-1.jpg", "2020-0129-105040_050101_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated expressway with three lanes in the ego direction, guardrails on both sides, and dry, smooth pavement; traffic is light. On the left shoulder and encroaching into the left lane, a red dump truck and a smaller flatbed are parked, blocking that lane near the ego vehicle. Far ahead in the center lanes, a few vehicles move away with ample spacing and do not affect the ego's pace. A blue pedestrian footbridge crosses overhead, and large support columns line the right edge.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05355", "split": "train", "clip_key": "titan_clip_1373_000180_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1373_000180_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1373_000180_movie_t-3_augB1.jpg", "titan_clip_1373_000180_movie_t-2_augB1.jpg", "titan_clip_1373_000180_movie_t-1_augB1.jpg", "titan_clip_1373_000180_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "In an urban setting, the ego vehicle approaches a narrow two-way local road with a single lane each way, no divider, smooth pavement, and very light traffic. Ahead to the right, a pedestrian in a black skirt carrying a handbag crosses from right to left, moving away from the camera in the middle of the road and occupying the ego lane. On the left foreground, another pedestrian steps off the curb and walks rightward across the path in front of the vehicle. A blue pedestrian crossing sign and a roadside convex mirror mark the junction.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing a black skirt, and crossing in the middle of the road, from the right side to the left side, away from the ego car. The driver should carefully manoeuvre around the crossing pedestrian to avoid a collision."}
{"id": "train_05356", "split": "train", "clip_key": "titan_clip_620_000252_movie", "source": {"subset": "titan", "scenario": "clip_620", "frame": "000252"}, "frames": ["titan_clip_620_000252_movie_t-3.jpg", "titan_clip_620_000252_movie_t-2.jpg", "titan_clip_620_000252_movie_t-1.jpg", "titan_clip_620_000252_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban residential street in Japan with a narrow two-way carriageway and no median, bordered by right-side guardrails and a coned walkway on the left, has smooth pavement and light traffic as the ego travels in the left lane through a gentle right bend. Ahead on the right edge, a group of three pedestrians walk toward the vehicle along the shoulder, moving around a parked vehicle and possibly stepping into the lane. A white mini truck is stopped on the right near the guardrail, encroaching on the travel lane and narrowing the path.", "hazard_reasoning": "There is a group of three pedestrians walking along the right side of the road, around a parked vehicle, toward the ego car. The group of pedestrians is approaching the vehicle's path, requiring the driver to carefully maneuver around them to avoid potential collision."}
{"id": "train_05357", "split": "train", "clip_key": "2020-0227-104226_021731_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "021731"}, "frames": ["2020-0227-104226_021731_movie_t-3.jpg", "2020-0227-104226_021731_movie_t-2.jpg", "2020-0227-104226_021731_movie_t-1.jpg", "2020-0227-104226_021731_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane road runs under an elevated expressway, with good pavement and a guardrail on the right; traffic is moderate and begins to ease. A white van directly ahead in the ego lane accelerates and drives away as traffic is clearing, opening a growing gap. Farther ahead in the same lane, a small white car continues straight at a steady pace, shaping the flow ahead. In the lane to the left, another white van travels slightly ahead and keeps parallel pace without entering the ego lane. No signals or unusual signs are clearly visible, and the roadway is unobstructed.", "hazard_reasoning": "There is a white van driving away from the ego car in front of the ego car, because traffic is clearing. The shaded area under the overpass and obstructed sidewalk limit the driver's visibility, so following the van helps reveal potential hidden hazards ahead."}
{"id": "train_05358", "split": "train", "clip_key": "titan_clip_654_000090_movie", "source": {"subset": "titan", "scenario": "clip_654", "frame": "000090"}, "frames": ["titan_clip_654_000090_movie_t-3.jpg", "titan_clip_654_000090_movie_t-2.jpg", "titan_clip_654_000090_movie_t-1.jpg", "titan_clip_654_000090_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian walking on right.", "environment_perception": "A narrow urban two-way street with no median and smooth pavement is shown, and traffic moves slowly. A white van ahead in the ego lane proceeds cautiously and intermittently slows, constraining the ego vehicle's pace. On the right side, several pedestrians cluster near the curb; one wearing black shorts walks toward the ego car along the road edge and may step into the lane, so the group influences the van's speed. On the left, a white work truck is parked by cones and fencing, narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing black shorts and walking on the right side of the road, toward the ego car. Because the pedestrian may step into the roadway, the driver should be cautious to prevent a potential collision."}
{"id": "train_05359", "split": "train", "clip_key": "2020-0213-143552_019278_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "019278"}, "frames": ["2020-0213-143552_019278_movie_t-3.jpg", "2020-0213-143552_019278_movie_t-2.jpg", "2020-0213-143552_019278_movie_t-1.jpg", "2020-0213-143552_019278_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction is lined by mid-rise buildings; red flexible posts form a center divider and the dry pavement shows normal markings as traffic moves at a slow to moderate pace. A black covered truck directly ahead in the ego lane slows with brake lights because queuing traffic builds in front, constraining our speed. A white truck approaches in the oncoming lane to the right beyond the posts and continues straight past us without deviating. Farther ahead, a line of vehicles around a gentle right curve fills the same-direction lane, reinforcing the congestion.", "hazard_reasoning": "There is a black truck slowing in the ego-car lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a collision due to the slower traffic ahead."}
{"id": "train_05360", "split": "train", "clip_key": "2020-0220-102630_093253_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "093253"}, "frames": ["2020-0220-102630_093253_movie_t-3.jpg", "2020-0220-102630_093253_movie_t-2.jpg", "2020-0220-102630_093253_movie_t-1.jpg", "2020-0220-102630_093253_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise apartment blocks; the asphalt is dry and well marked, and overall traffic is light as the car approaches a signalized junction. A lime green hatchback sits directly ahead in the ego lane, stopped because the traffic light ahead is red, so it blocks the path and dictates the halt. On the opposite carriageway to the right, a few oncoming cars proceed behind a guardrail median without affecting the ego lane. Overhead signals are visible at the intersection, with roadside railings and a bus stop on the left.", "hazard_reasoning": "There is a yellow or lime green hatchback stopped in the ego lane, because of red traffic lights ahead. You should stop to avoid rear-ending the halted vehicle at the red light."}
{"id": "train_05361", "split": "train", "clip_key": "titan_clip_292_000126_movie", "source": {"subset": "titan", "scenario": "clip_292", "frame": "000126"}, "frames": ["titan_clip_292_000126_movie_t-3.jpg", "titan_clip_292_000126_movie_t-2.jpg", "titan_clip_292_000126_movie_t-1.jpg", "titan_clip_292_000126_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around cones", "environment_perception": "A narrow urban two-way street with smooth pavement and no median runs between close-set buildings, and traffic is light with no vehicles moving ahead or oncoming. On the left edge, a group of traffic cones lines the curb, slightly narrowing the lane. The roadway ahead remains clear of moving road users. Parked bicycles stand along the right curb by storefronts, and a short bollard sits at the near right corner. No traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a group of traffic cones on the left side of the road. These cones indicate a road construction area that the driver should avoid by carefully manoeuvring around them."}
{"id": "train_05362", "split": "train", "clip_key": "2020-0217-144444_005437_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "005437"}, "frames": ["2020-0217-144444_005437_movie_t-3.jpg", "2020-0217-144444_005437_movie_t-2.jpg", "2020-0217-144444_005437_movie_t-1.jpg", "2020-0217-144444_005437_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban arterial with two lanes in the ego direction and a guardrailed sidewalk on the left has dry pavement and heavy, slow traffic. A yellow sedan directly ahead in the ego lane is stopped because of traffic congestion, holding the ego vehicle. In the adjacent right lane, a black boxy minivan edges forward with the queue alongside the ego car, limiting room to change lanes. Farther ahead in the right lane, a white truck creeps with the jam and sets the pace for vehicles there.", "hazard_reasoning": "There is a yellow sedan stopped in front of the ego car in the ego lane because of traffic congestion. The driver should stop to maintain a safe following distance and avoid colliding with the halted vehicle."}
{"id": "train_05363", "split": "train", "clip_key": "2020-0226-140503_017482_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "017482"}, "frames": ["2020-0226-140503_017482_movie_t-3.jpg", "2020-0226-140503_017482_movie_t-2.jpg", "2020-0226-140503_017482_movie_t-1.jpg", "2020-0226-140503_017482_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection on a two-way road with a single left-hand lane each direction has wet but intact pavement and light traffic; the ego car waits at the stop line. Ahead at the zebra crosswalk, several pedestrians move rightward across the ego lane, and a pedestrian in a black dress crosses to the right while the light is red, directly occupying our path. On the near-right corner of the cross street, a white car sits paused behind the crosswalk, yielding to the pedestrians and not entering the junction. Farther ahead near the opposite sidewalk, a person with a bicycle rolls along the cross street, staying clear of the ego lane. The traffic signal facing the ego approach shows red.", "hazard_reasoning": "There is a pedestrian wearing a black dress, crossing the street at the crosswalk to the right side, because of the red traffic light. The driver should stop to yield to the pedestrian and avoid a collision."}
{"id": "train_05364", "split": "train", "clip_key": "2020-0227-104226_101660_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "101660"}, "frames": ["2020-0227-104226_101660_movie_t-3.jpg", "2020-0227-104226_101660_movie_t-2.jpg", "2020-0227-104226_101660_movie_t-1.jpg", "2020-0227-104226_101660_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban divided arterial with three lanes in the ego direction runs straight on smooth pavement, separated from oncoming lanes by a white guardrail; traffic is light to moderate and steady. Ahead in the ego lane, a white box truck slows, reducing the gap and dictating the ego car's speed. In the adjacent right lane, a white hatchback travels slightly faster and continues ahead without drifting toward the ego lane. On the right beyond the guardrail, an oncoming large truck proceeds in the opposite carriageway and remains separated.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. You should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_05365", "split": "train", "clip_key": "titan_clip_168_000342_movie", "source": {"subset": "titan", "scenario": "clip_168", "frame": "000342"}, "frames": ["titan_clip_168_000342_movie_t-3.jpg", "titan_clip_168_000342_movie_t-2.jpg", "titan_clip_168_000342_movie_t-1.jpg", "titan_clip_168_000342_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians approaching crossing", "environment_perception": "An urban multi-lane arterial in a city center has a left-side bicycle lane, no median, good pavement, and moderate traffic that slows near a zebra crossing. Three pedestrians in dark tops and gray pants walk out from the left sidewalk toward the ego car to use the crosswalk, entering the ego lane. Ahead in the same direction, a small white van follows a bus and moves slowly, constraining the ego vehicle's pace. A cyclist travels along the left curb in the bike lane at low speed, close to the ego path near the crossing. Overhead blue direction boards and a no-parking sign are visible.", "hazard_reasoning": "There are three pedestrians wearing black shirts and gray pants and walking from the left side of the road and towards the ego car, to walk in the pedestrian crossing. The driver should be aware because the pedestrians are approaching the crossing and may enter the road."}
{"id": "train_05366", "split": "train", "clip_key": "2020-0203-154554_073690_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "073690"}, "frames": ["2020-0203-154554_073690_movie_t-3.jpg", "2020-0203-154554_073690_movie_t-2.jpg", "2020-0203-154554_073690_movie_t-1.jpg", "2020-0203-154554_073690_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "be aware of motorcycle cutting in", "environment_perception": "An urban two-way arterial with multiple lanes and a painted median has dry pavement and moderate flow as the scene approaches a signalized intersection. A black motorcycle draws alongside on the left, cuts from the left lane into the ego lane, and then accelerates away from the ego car. A red mini car directly ahead in the ego lane continues straight through the junction and modestly sets the pace. Several cars and vans approach as oncoming traffic in the right-side lanes, remaining in their lanes. The traffic light ahead shows green, and parked vehicles line the left curb near the intersection.", "hazard_reasoning": "There is a black motorcycle cutting in from the left lane to the ego lane and driving away from the ego car. This sudden lane change by the motorcycle can reduce your buffer and may require you to adjust speed or position to maintain safety."}
{"id": "train_05367", "split": "train", "clip_key": "2020-0213-143552_034545_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "034545"}, "frames": ["2020-0213-143552_034545_movie_t-3.jpg", "2020-0213-143552_034545_movie_t-2.jpg", "2020-0213-143552_034545_movie_t-1.jpg", "2020-0213-143552_034545_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multilane road runs under an elevated structure, with three same-direction lanes and no median; the pavement looks smooth and traffic is light to moderate. A white box truck directly ahead in the ego lane slows near the junction, constraining the ego vehicle's pace. Slightly ahead to the left, a black minivan drifts right toward the center line and briefly overlaps the ego lane, potentially entering the path ahead of the truck. In the left lane by the curb, another white delivery truck rolls slowly alongside the buildings, reducing space to the left. Farther ahead in the right lane, a small white van proceeds straight through the intersection. A traffic signal above shows green.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The slowing truck may require the driver to slow down to maintain a safe following distance."}
{"id": "train_05368", "split": "train", "clip_key": "2020-0206-101736_021460_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "021460"}, "frames": ["2020-0206-101736_021460_movie_t-3.jpg", "2020-0206-101736_021460_movie_t-2.jpg", "2020-0206-101736_021460_movie_t-1.jpg", "2020-0206-101736_021460_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial with dry, patched pavement carries moderate same-direction flow as the ego car proceeds in the leftmost lane toward a signalized intersection with overhead blue direction signs. A motorcyclist wearing a purple jacket rides just ahead in the ego lane near the curb, moving away and continuing straight, so the ego vehicle follows at the rider's pace. Farther ahead in the same lane, a black van slows toward the intersection, further constraining the lane. In the adjacent right lanes, a white van and a white car travel straight at a similar speed and remain in their lanes without edging toward the ego path. Overhead signs show route guidance to Toyotama and Shimo-ochiai.", "hazard_reasoning": "There is a motorcyclist wearing a purple jacked and driving in the ego lane away from the ego car. The rider may slow down or maneuver unpredictably, posing a risk if the driver approaches too closely, so maintaining a safe following distance is essential."}
{"id": "train_05369", "split": "train", "clip_key": "titan_clip_1217_000396_movie", "source": {"subset": "titan", "scenario": "clip_1217", "frame": "000396"}, "frames": ["titan_clip_1217_000396_movie_t-3.jpg", "titan_clip_1217_000396_movie_t-2.jpg", "titan_clip_1217_000396_movie_t-1.jpg", "titan_clip_1217_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street in Japan is two-way without a centerline, the asphalt looks smooth with patches, and traffic is light with no oncoming vehicles visible. Ahead in the middle of the road, a pedestrian in a blue shirt and blue pants walks away from the ego car to pass a white car parked on the left, temporarily occupying the ego path. The white car remains stopped along the curb and protrudes slightly into the narrow lane, constraining room to proceed. At the near left edge, another pedestrian holding bags waits by the curb without stepping into the roadway. Orange cones and stacked materials sit at a right-side entrance but stay off the lane.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and blue pants, and walking in the middle of the road, away from the ego car, because of the parked vehicle. The pedestrian is walking in the roadway to bypass the parked vehicle, posing a potential collision risk; slow down to maintain a safe distance and avoid an accident."}
{"id": "train_05370", "split": "train", "clip_key": "2020-0220-102630_100073_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "100073"}, "frames": ["2020-0220-102630_100073_movie_t-3.jpg", "2020-0220-102630_100073_movie_t-2.jpg", "2020-0220-102630_100073_movie_t-1.jpg", "2020-0220-102630_100073_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road in Japan runs straight with two lanes in the same direction, a concrete wall on the right and shops on the left; the asphalt is dry and traffic flows steadily. A small green truck ahead in the ego lane continues straight and gradually pulls away from the camera, setting the ego vehicle's pace. Farther ahead in the left lane, a city bus slows near the curb while proceeding straight, leaving the ego lane unobstructed. An overhead pedestrian bridge spans the road and carries a yellow merging warning sign.", "hazard_reasoning": "There is a green truck driving in the ego lane, away from the ego car. Since the truck is directly ahead in your lane, following it helps maintain a safe distance and reduces the risk of a collision if it slows suddenly."}
{"id": "train_05371", "split": "train", "clip_key": "2020-0217-110854_006784_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "006784"}, "frames": ["2020-0217-110854_006784_movie_t-3.jpg", "2020-0217-110854_006784_movie_t-2.jpg", "2020-0217-110854_006784_movie_t-1.jpg", "2020-0217-110854_006784_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with no centerline runs between buildings and winter trees; the pavement looks worn and traffic moves slowly amid roadside loading. A man in brown trousers and a light blue shirt cycles in the ego lane directly ahead, moving steadily and constraining the car's speed. On the right at the upcoming crosswalk, a pedestrian steps off the curb and starts to cross the lane, entering the cyclist's and ego path. Farther ahead, a large truck and a dark van stopped along the left side, the van with its rear hatch open, narrow the passage and form a bottleneck. A marked zebra crossing is prominent at the intersection.", "hazard_reasoning": "There is a man wearing a pair of brown trousers, a light blue shirt, cycling a bicycle in the ego lane, in front of the ego car. Because the cyclist is directly in the driving lane ahead, the driver should slow down to maintain a safe distance and avoid collision."}
{"id": "train_05372", "split": "train", "clip_key": "titan_clip_78_000510_movie", "source": {"subset": "titan", "scenario": "clip_78", "frame": "000510"}, "frames": ["titan_clip_78_000510_movie_t-3.jpg", "titan_clip_78_000510_movie_t-2.jpg", "titan_clip_78_000510_movie_t-1.jpg", "titan_clip_78_000510_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked minivan", "environment_perception": "An urban two-way street with a single narrow lane in each direction has smooth pavement and light traffic, with no median. Ahead on the left, a dark van is stopped with its rear hatch open while a person moves around the back, together narrowing the ego lane. Farther ahead in the opposing lane, a small car approaches at a steady pace, relevant as it passes the roadside blockage. On the right side of the road, a yellow minivan is parked at the curb, adding to the constriction. A no-entry sign marks a side street on the right.", "hazard_reasoning": "There is a yellow minivan parked on the right side of the road. It reduces the available road space and may obstruct the vehicle's path, so you should manoeuvre carefully around the parked minivan."}
{"id": "train_05373", "split": "train", "clip_key": "titan_clip_1146_000138_movie", "source": {"subset": "titan", "scenario": "clip_1146", "frame": "000138"}, "frames": ["titan_clip_1146_000138_movie_t-3.jpg", "titan_clip_1146_000138_movie_t-2.jpg", "titan_clip_1146_000138_movie_t-1.jpg", "titan_clip_1146_000138_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrians", "environment_perception": "A narrow two-way urban shopping street runs ahead without a median, the pavement is worn and cracked, and traffic is light with no moving vehicles. A group of three pedestrians ahead on the right side walks away from the ego vehicle, keeping close to the curb yet near the travel lane. A 30 km/h speed limit sign is posted on the left.", "hazard_reasoning": "There are a group of three pedestrians walking on the right side of the road, away from the ego car. To avoid a potential collision, the driver should manoeuvre carefully around the pedestrians."}
{"id": "train_05374", "split": "train", "clip_key": "titan_clip_198_000468_movie", "source": {"subset": "titan", "scenario": "clip_198", "frame": "000468"}, "frames": ["titan_clip_198_000468_movie_t-3.jpg", "titan_clip_198_000468_movie_t-2.jpg", "titan_clip_198_000468_movie_t-1.jpg", "titan_clip_198_000468_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrians crossing ahead", "environment_perception": "A narrow urban side street runs between tall buildings with no median and smooth asphalt; traffic is light but briefly impeded. Two pedestrians talk as they cross directly ahead from the right sidewalk to the left, occupying the ego vehicle's path and constraining its pace. A large white box truck is stopped along the left curb just ahead, protruding into the lane and narrowing the available space. On the right sidewalk a person stands beside a bicycle near the curb and remains stationary. No traffic signals or posted speeds are visible, and no oncoming vehicles appear.", "hazard_reasoning": "There are two pedestrians talking in a group, crossing the street in front of the ego car, from the right side of the street to the left side. The driver should be aware of these pedestrians because their path intersects the vehicle's trajectory and may lead to a collision risk if not anticipated."}
{"id": "train_05375", "split": "train", "clip_key": "titan_clip_538_000144_movie", "source": {"subset": "titan", "scenario": "clip_538", "frame": "000144"}, "frames": ["titan_clip_538_000144_movie_t-3.jpg", "titan_clip_538_000144_movie_t-2.jpg", "titan_clip_538_000144_movie_t-1.jpg", "titan_clip_538_000144_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential street has a narrow two-way carriageway without a centerline; the pavement is smooth and traffic is light as the road runs straight. Ahead in the ego lane, a white van is stopped against the left curb, narrowing the lane and constraining available space for the ego vehicle. To the right, several vans are parked within a roadside parking lot near an exit, partly obscuring sightlines from that side. A no-parking sign stands on the left, and the curb is lined with green railings and bollards.", "hazard_reasoning": "No caption provided. No potential hazards are detected in the current scenario, so no specific driver action is required."}
{"id": "train_05376", "split": "train", "clip_key": "2020-0205-103411_014063_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "014063"}, "frames": ["2020-0205-103411_014063_movie_t-3.jpg", "2020-0205-103411_014063_movie_t-2.jpg", "2020-0205-103411_014063_movie_t-1.jpg", "2020-0205-103411_014063_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "In a dense urban corridor, the ego car proceeds along a smooth multi-lane arterial with a planted median on the right separating oncoming traffic, and overall flow is moderate. Directly ahead, a blue garbage truck begins moving from the ego lane into the left lane, easing its speed as it shifts and briefly dictating the ego vehicle's pace, with its rear compartment open. To the right, a silver minivan in the adjacent lane travels alongside at similar speed without encroaching. Oncoming vehicles pass steadily beyond the median to the right. An overhead gantry ahead displays a 50 speed limit.", "hazard_reasoning": "There is a blue truck lane changing in front of the ego car, from the ego lane to the left lane. You should follow the vehicle ahead to maintain a safe distance and be prepared for its lane change."}
{"id": "train_05377", "split": "train", "clip_key": "2020-0227-104226_001426_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "001426"}, "frames": ["2020-0227-104226_001426_movie_t-3.jpg", "2020-0227-104226_001426_movie_t-2.jpg", "2020-0227-104226_001426_movie_t-1.jpg", "2020-0227-104226_001426_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A busy urban corridor with multi-lane traffic runs beside a raised curb median on the right; the pavement is smooth and the flow is heavy and stop-and-go. A white van directly ahead in the ego lane is stopped, blocking our path because of congestion. In the adjacent lane to the left, another white van is also halted in the queue, limiting space to change lanes. Farther left, a line of cars creeps forward in short gaps. Beyond the median on the right, the oncoming lanes appear mostly clear.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. Driver should stop to avoid a rear-end collision with the stationary van."}
{"id": "train_05378", "split": "train", "clip_key": "2020-0210-101957_032639_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_032639_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_032639_movie_t-3_augB1.jpg", "2020-0210-101957_032639_movie_t-2_augB1.jpg", "2020-0210-101957_032639_movie_t-1_augB1.jpg", "2020-0210-101957_032639_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multi-lane two-way road runs between mid-rise buildings, divided by double white lines on smooth pavement, with moderate traffic that bunches up ahead. A white truck directly ahead in the ego lane slows as traffic compresses, constraining our pace. A black SUV to the right moves slightly ahead in the adjacent same-direction lane, occupying the space beside us and limiting immediate overtaking room. Oncoming cars in the opposite lanes travel steadily beyond the median lines and stay separated from our path. A no-parking sign is posted on the left sidewalk.", "hazard_reasoning": "There is a white truck slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead on the road. The driver should slow down because the truck's reduced speed due to congestion can increase the risk of rear-end collisions and requires maintaining a safe following distance."}
{"id": "train_05379", "split": "train", "clip_key": "2020-0204-150838_080225_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "080225"}, "frames": ["2020-0204-150838_080225_movie_t-3.jpg", "2020-0204-150838_080225_movie_t-2.jpg", "2020-0204-150838_080225_movie_t-1.jpg", "2020-0204-150838_080225_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid a potential collision", "environment_perception": "On a suburban two-lane same-direction road, the pavement is dry and smooth and traffic is light, with a sound barrier along one side. Ahead, a white box truck in the ego lane is changing to the left lane in front of the ego vehicle. No other vehicles are close in the ego lane, with a guardrail on the left and a high wall on the right.", "hazard_reasoning": "There is a white truck changing lanes in front of the car, from the ego lane to the left lane. The truck's lane change could unexpectedly cut into your path, so you should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_05380", "split": "train", "clip_key": "2020-0131-103016_041435_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "041435"}, "frames": ["2020-0131-103016_041435_movie_t-3.jpg", "2020-0131-103016_041435_movie_t-2.jpg", "2020-0131-103016_041435_movie_t-1.jpg", "2020-0131-103016_041435_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to the merging van", "environment_perception": "An urban multi-lane boulevard approaches a wide signalized intersection with broad zebra crosswalks and smooth pavement; traffic is light and steady. To the right, a black van moves diagonally left across the front, shifting from the right lane toward the left through the clear intersection and potentially entering the ego lane. Ahead-left within the box, a silver car travels rightward across the junction, completing a turn and briefly occupying the space ahead before clearing. Farther ahead beyond the intersection, several same-direction vehicles continue straight at low speed, loosely setting the pace. Oncoming traffic in the opposite lanes is sparse and passes through the intersection without conflict.", "hazard_reasoning": "a black van is intersecting from the right lane to the left because of the clear intersection. The driver should yield to the merging van to avoid a side-impact collision."}
{"id": "train_05381", "split": "train", "clip_key": "titan_clip_598_000204_movie", "source": {"subset": "titan", "scenario": "clip_598", "frame": "000204"}, "frames": ["titan_clip_598_000204_movie_t-3.jpg", "titan_clip_598_000204_movie_t-2.jpg", "titan_clip_598_000204_movie_t-1.jpg", "titan_clip_598_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian ahead.", "environment_perception": "A narrow urban side street with a single lane and no median runs between close shopfronts; the pavement is smooth and vehicular traffic is very light. On the right edge near the camera, two pedestrians walk toward the ego vehicle along the lane, with one close to the curb and in the path, constraining the vehicle's pace. Farther ahead in the center of the lane, another pedestrian walks away from the camera along the same path and will be overtaken. Bicycles line the left storefronts, and cones plus a small cart on the right encroach slightly, narrowing the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black shorts, walking along the right side of the lane, toward the ego car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should remain cautious."}
{"id": "train_05382", "split": "train", "clip_key": "titan_clip_48_000558_movie", "source": {"subset": "titan", "scenario": "clip_48", "frame": "000558"}, "frames": ["titan_clip_48_000558_movie_t-3.jpg", "titan_clip_48_000558_movie_t-2.jpg", "titan_clip_48_000558_movie_t-1.jpg", "titan_clip_48_000558_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban street with a narrow two-way carriageway and no center line has smooth pavement and light traffic. A white truck is parked ahead along the left curb in the ego lane, narrowing the available space. Several pedestrians walk forward on the left sidewalk near the truck, remaining within the railed walkway. On the right sidewalk, a person stands beside a bicycle near a pole at the curb. No traffic signals or other moving vehicles are visible.", "hazard_reasoning": "There is a white truck parked on the left side of the road, in the ego lane. The parked vehicle partially blocks the lane, so the driver should carefully manoeuvre to avoid collision."}
{"id": "train_05383", "split": "train", "clip_key": "titan_clip_636_000438_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_636_000438_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_636_000438_movie_t-3_augB1.jpg", "titan_clip_636_000438_movie_t-2_augB1.jpg", "titan_clip_636_000438_movie_t-1_augB1.jpg", "titan_clip_636_000438_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "An urban, very narrow street without a median runs between buildings; pavement is clean and traffic is light but compressed by delivery activity on the right. Ahead in the middle of the road, a pedestrian wearing a white shirt and blue pants and carrying a handbag walks toward the ego vehicle, occupying its lane. On the right close ahead, a delivery worker unloads at the open back of a truck with a hand cart, and the operation extends into the roadway, reducing clearance. Farther ahead on the right, additional trucks stand stopped for loading and protrude into the travel space, constraining the ego car's progress.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, blue pants, and carrying a handbag, walking in the middle of the road, toward the ego car. The driver should yield because the pedestrian is in your path and limited visibility from the parked truck increases collision risk."}
{"id": "train_05384", "split": "train", "clip_key": "titan_clip_305_000096_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_305_000096_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_305_000096_movie_t-3_augB1.jpg", "titan_clip_305_000096_movie_t-2_augB1.jpg", "titan_clip_305_000096_movie_t-1_augB1.jpg", "titan_clip_305_000096_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian in roadway.", "environment_perception": "A narrow urban shopping street with a single shared lane has no centerline or median; the brick-paved surface is dry and vehicle traffic is light. Storefronts and parked bicycles line both sides as the ego vehicle continues straight at low speed. Ahead in the lane center, a pedestrian in a white dress carrying a backpack walks away from the ego vehicle because of a van stopped on the right, remaining directly in the ego path. A small white van is parked at the right curb with its rear open, protruding slightly into the roadway and constricting the lane. Farther ahead, a cyclist travels away near the middle but maintains a steady gap. Construction hoarding on the right narrows the edge of the street.", "hazard_reasoning": "There is a pedestrian wearing a white dress, carrying a backpack, walking in the middle of the road away from the ego car, because of the parked vehicle on the right. The pedestrian is in the vehicle's path and may not be visible until close, so the driver should slow down to avoid a collision."}
{"id": "train_05385", "split": "train", "clip_key": "titan_clip_1187_000288_movie", "source": {"subset": "titan", "scenario": "clip_1187", "frame": "000288"}, "frames": ["titan_clip_1187_000288_movie_t-3.jpg", "titan_clip_1187_000288_movie_t-2.jpg", "titan_clip_1187_000288_movie_t-1.jpg", "titan_clip_1187_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial alley with a paving-stone surface functions as a narrow single-lane shared street without a centerline, and there are no motor vehicles, so traffic is light. Storefronts line both sides as the ego vehicle proceeds straight at low speed. On the right ahead, a pedestrian wearing a white shirt and black pants and carrying a backpack walks away along the edge, potentially edging toward the ego path. Slightly ahead in the center-right, two other pedestrians walk away within the lane, so they set the pace in front. On the left near the curb, a man stands by a wall, stationary close to the travel way.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a backpack, walking on the right side of the road, away from the ego car. The pedestrian is walking close to the vehicle's path and may step into it unexpectedly, so the driver should carefully manoeuvre to maintain a safe distance."}
{"id": "train_05386", "split": "train", "clip_key": "2020-0214-145407_055213_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "055213"}, "frames": ["2020-0214-145407_055213_movie_t-3.jpg", "2020-0214-145407_055213_movie_t-2.jpg", "2020-0214-145407_055213_movie_t-1.jpg", "2020-0214-145407_055213_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three lanes in the ego direction is divided from oncoming lanes on the right by a raised median; the pavement is smooth and dry and traffic is moderate. Ahead in the left lane, a white van travels slowly as it passes a box truck stopped at the curb with its rear open, narrowing the lane and setting the pace. Farther ahead in the center lane, a small car continues straight at a steady speed. Near the left foreground, a scooter leaves the crosswalk and moves into the left lane ahead of the ego vehicle, merging into the flow. A signalized intersection with a large overhead Japanese message board spans the road.", "hazard_reasoning": "There are no visible hazards, obstacles, or unusual traffic behaviors in the scene, so the driver can maintain normal driving operations."}
{"id": "train_05387", "split": "train", "clip_key": "titan_clip_321_000900_movie", "source": {"subset": "titan", "scenario": "clip_321", "frame": "000900"}, "frames": ["titan_clip_321_000900_movie_t-3.jpg", "titan_clip_321_000900_movie_t-2.jpg", "titan_clip_321_000900_movie_t-1.jpg", "titan_clip_321_000900_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban commercial backstreet features brick-pattern paving, no lane markings, and a single very narrow shared lane without a median; the surface is dry and traffic is light with no motor vehicles visible. Ahead in the center of the lane, a woman wearing black pants and a green-and-black shirt carries a handbag and walks away from the ego vehicle in the middle of the road, directly occupying the ego path. Farther ahead, a pedestrian stands at the right edge by a shopfront near the roadway. Additional pedestrians are visible in the distance near storefronts. Freestanding signboards and a large blue bin along both sides protrude into the carriageway, further narrowing the passage.", "hazard_reasoning": "There is a woman wearing black pants and a green-and-black shirt, carrying a handbag, and walking away from the ego car, in the middle of the road. The driver should yield because the pedestrian is occupying the travel path and needs right of way."}
{"id": "train_05388", "split": "train", "clip_key": "2020-0226-101332_024879_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "024879"}, "frames": ["2020-0226-101332_024879_movie_t-3.jpg", "2020-0226-101332_024879_movie_t-2.jpg", "2020-0226-101332_024879_movie_t-1.jpg", "2020-0226-101332_024879_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with good pavement and painted markings carries queued traffic toward a signalized intersection, and flow is slow and mostly stopped. A white truck with a gray canvas cover is directly ahead in the ego lane, stopped because the light is red and holding the ego vehicle. To the left, a silver van in the adjacent same-direction lane waits slightly ahead in the queue. On the right near the crosswalk, a yellow taxi inches forward in the right lane but remains behind the stop line. The overhead traffic signal shows red, and a coned work area with a small white truck narrows the rightmost lane.", "hazard_reasoning": "There is a white truck covered in a gray canvas stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to avoid rear-ending the stationary vehicle at the red light."}
{"id": "train_05389", "split": "train", "clip_key": "titan_clip_1215_000426_movie", "source": {"subset": "titan", "scenario": "clip_1215", "frame": "000426"}, "frames": ["titan_clip_1215_000426_movie_t-3.jpg", "titan_clip_1215_000426_movie_t-2.jpg", "titan_clip_1215_000426_movie_t-1.jpg", "titan_clip_1215_000426_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way backstreet with no median and intact but worn pavement shows light vehicle traffic and heavy pedestrian presence. Far ahead in the center of the road, a small white car travels away from the ego vehicle. Along the left edge nearby, a pedestrian wearing a white shirt and carrying a backpack walks away from the ego car, keeping to the roadside but close to the ego lane. On the right foreground, another pedestrian in a white shirt walks toward the camera partly in the roadway, narrowing the available space. Midfield near the left curb, a small group lingers and one person moves diagonally across the road, briefly entering the ego vehicle's path.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and is carrying a backpack walking on the left side of the road, away from the ego car. The pedestrian's presence on the roadway creates a collision risk, so the driver should carefully manoeuvre around them to avoid an accident."}
{"id": "train_05390", "split": "train", "clip_key": "titan_clip_902_000450_movie", "source": {"subset": "titan", "scenario": "clip_902", "frame": "000450"}, "frames": ["titan_clip_902_000450_movie_t-3.jpg", "titan_clip_902_000450_movie_t-2.jpg", "titan_clip_902_000450_movie_t-1.jpg", "titan_clip_902_000450_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban residential street with a very narrow two-way carriageway and no centerline shows smooth pavement and light traffic as the road curves slightly to the right ahead. A white box truck is parked along the left side ahead with its rear liftgate down while it is being unloaded, narrowing the usable lane. A worker stands at the back of the truck in the roadway, moving as he handles cargo and may step into the ego lane. On the right, a person stands on the building steps near the curb beside a handcart, close to the roadway but stationary. No other moving vehicles or signals are visible.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. The parked truck partially blocks the lane and reduces visibility for oncoming traffic, so the driver must manoeuvre carefully around it to avoid collision."}
{"id": "train_05391", "split": "train", "clip_key": "2020-0228-150133_030981_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "030981"}, "frames": ["2020-0228-150133_030981_movie_t-3.jpg", "2020-0228-150133_030981_movie_t-2.jpg", "2020-0228-150133_030981_movie_t-1.jpg", "2020-0228-150133_030981_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement runs straight between mid-rise buildings, with traffic moderate and bunching into a queue at the upcoming intersection. The ego vehicle travels in the left lane. A white hatchback directly ahead in the ego lane is stopped at a red traffic signal and holds the ego in place. To the left, a silver van alongside waits in the adjacent lane as part of the same queue. Slightly farther ahead left, a dark car also stands in line at the light. The signal ahead shows red, a pedestrian overpass spans the junction, and a painted gore on the right leads to a side lane that remains clear.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, because of red traffic lights. The driver must stop to avoid colliding with the halted vehicle at the intersection."}
{"id": "train_05392", "split": "train", "clip_key": "2020-0210-101957_038898_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "038898"}, "frames": ["2020-0210-101957_038898_movie_t-3.jpg", "2020-0210-101957_038898_movie_t-2.jpg", "2020-0210-101957_038898_movie_t-1.jpg", "2020-0210-101957_038898_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately behind the stopped hatchback.", "environment_perception": "An urban multi-lane two-way road approaches a signalized intersection, the pavement dry and in good condition, with light to moderate flow forming short queues. A black hatchback directly ahead in the ego lane is stopped at the stop line because the overhead signal is red, holding the ego car in place. A light-blue flatbed truck waits in the adjacent lane to the left, slightly ahead of the ego vehicle, ready to proceed when the light changes and pacing our start. On the far side of the junction, several oncoming cars line up in their lanes beyond the crosswalk, stationary and not entering our path. The traffic signal for our approach displays red.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid a rear-end collision and comply with the traffic signal."}
{"id": "train_05393", "split": "train", "clip_key": "titan_clip_573_000324_movie", "source": {"subset": "titan", "scenario": "clip_573", "frame": "000324"}, "frames": ["titan_clip_573_000324_movie_t-3.jpg", "titan_clip_573_000324_movie_t-2.jpg", "titan_clip_573_000324_movie_t-1.jpg", "titan_clip_573_000324_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban street with smooth pavement and edge lines curves gently right, with no center divider and light traffic; no oncoming vehicles appear. Far ahead in the same-direction lane, a white box truck is parked with its rear open for unloading, occupying the ego lane and constraining the approach. On the right curb at mid-distance, a person sits on a scooter beside a building, stationary close to the roadway but not entering. At the left edge in the foreground, a black sedan is parked near a lot entrance, slightly narrowing the usable space. A prominent parking sign with a large P is visible on the left, and several bicycles are parked along the right-side storefronts.", "hazard_reasoning": "There is a white truck parked in the ego lane, away from the ego car, because it is being unloaded. The parked truck blocks the driving lane and requires the driver to manoeuvre carefully around it to maintain a safe path."}
{"id": "train_05394", "split": "train", "clip_key": "2020-0131-135401_066996_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "066996"}, "frames": ["2020-0131-135401_066996_movie_t-3.jpg", "2020-0131-135401_066996_movie_t-2.jpg", "2020-0131-135401_066996_movie_t-1.jpg", "2020-0131-135401_066996_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane divided road crosses a steel truss bridge, with three lanes in the ego's direction and metal rails along the edges. The pavement is dry and smooth, and traffic flows light to moderate with clear visibility. A box truck ahead in the ego lane cruises at a steady speed and effectively sets the pace. A white van slightly ahead in the right lane continues straight parallel to the ego and shows no sign of moving into the ego lane. Farther ahead, a smaller truck in the left lane proceeds straight with a comfortable gap and little impact on the ego. A roadside information sign with Japanese text stands on the right.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05395", "split": "train", "clip_key": "2020-0129-144857_088070_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "088070"}, "frames": ["2020-0129-144857_088070_movie_t-3.jpg", "2020-0129-144857_088070_movie_t-2.jpg", "2020-0129-144857_088070_movie_t-1.jpg", "2020-0129-144857_088070_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs on smooth pavement, divided from oncoming lanes to the right by a metal guardrail; traffic appears moderate and flows steadily. A silver hatchback ahead in the ego lane travels at a steady pace and sets the ego vehicle's following gap. Farther ahead in the same lane, a white box truck proceeds toward the intersection area, leading a short line of vehicles the ego follows. On the opposite carriageway to the right, several cars, including a dark SUV near the foreground, approach as oncoming traffic but remain separated by the barrier. Overhead traffic signals are visible in the distance.", "hazard_reasoning": "There are no hazards detected; continue driving as traffic flows smoothly and the road ahead is clear."}
{"id": "train_05396", "split": "train", "clip_key": "2020-0214-145407_042225_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "042225"}, "frames": ["2020-0214-145407_042225_movie_t-3.jpg", "2020-0214-145407_042225_movie_t-2.jpg", "2020-0214-145407_042225_movie_t-1.jpg", "2020-0214-145407_042225_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs under an elevated expressway; the pavement is dry and traffic is heavy with slow queues in the same direction and no oncoming traffic visible. A white van is stopped directly ahead in the ego lane with brake lights on, holding the ego car. To the left, a scooter with a rear box emerges from a side street and moves forward along the curb, possibly merging ahead of the van. In the adjacent right lane, several cars, including a dark van near the curb and a silver sedan farther ahead, creep forward alongside the ego vehicle. An overhead sign with lane arrows provides directional guidance.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane. The white van is stopped directly ahead, requiring the driver to stop to avoid a collision."}
{"id": "train_05397", "split": "train", "clip_key": "titan_clip_316_000570_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_316_000570_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_316_000570_movie_t-3_augB1.jpg", "titan_clip_316_000570_movie_t-2_augB1.jpg", "titan_clip_316_000570_movie_t-1_augB1.jpg", "titan_clip_316_000570_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban back street with a narrow, block-paved lane runs between tall buildings, with no centerline or median and very light vehicular flow. Ahead in the middle of the lane, a man wearing a blue shirt and gray pants carries a handbag and walks away from the ego vehicle, occupying the path and constraining progress. Slightly farther ahead left, another pedestrian walks in the same direction within the lane and may remain in the vehicle's trajectory. On the left edge, a silver car is parked nose-out into the roadway, narrowing the usable space near the ego vehicle. No oncoming vehicles or traffic signals are visible.", "hazard_reasoning": "There is a man wearing a blue shirt and gray pants, carrying a handbag, and walking away from the ego car, in the middle of the road. The driver should manoeuvre carefully since the pedestrian is walking in the middle of the lane, risking a sudden obstruction of the vehicle's path."}
{"id": "train_05398", "split": "train", "clip_key": "2020-0127-132751_077588_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "077588"}, "frames": ["2020-0127-132751_077588_movie_t-3.jpg", "2020-0127-132751_077588_movie_t-2.jpg", "2020-0127-132751_077588_movie_t-1.jpg", "2020-0127-132751_077588_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement and a painted median carries light to moderate flow in both directions. A white van in forward motion in the ego lane ahead travels steadily and sets the pace. To the right, several oncoming cars proceed in the opposing lanes, passing the median without affecting the ego lane. A small oncoming mini-truck runs closest to the divider and continues past. A circular roadside sign on the left posts a 50 km/h limit.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05399", "split": "train", "clip_key": "titan_clip_519_000456_movie", "source": {"subset": "titan", "scenario": "clip_519", "frame": "000456"}, "frames": ["titan_clip_519_000456_movie_t-3.jpg", "titan_clip_519_000456_movie_t-2.jpg", "titan_clip_519_000456_movie_t-1.jpg", "titan_clip_519_000456_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of crossing pedestrian", "environment_perception": "An urban neighborhood street with shops and apartments, a narrow two-way lane without a median and smooth pavement, has light traffic as the ego vehicle approaches a small intersection. Ahead in the center of the lane, a pedestrian in a white shirt and white pants crosses mid-road from left to right directly in front of the car, constraining the ego's pace. A red triangular stop sign stands at the left corner for the upcoming intersection. A small van is parked along the right curb and several bicycles are lined up on the left, slightly narrowing the approach.", "hazard_reasoning": "a pedestrian wearing a white shirt with white pant is crossing the street, in the middle of the road moving from the left to the right side of the road because of the clear road. The pedestrian is entering the vehicle's path and may not notice the oncoming car, so the driver should be aware to prevent a potential collision."}
{"id": "train_05400", "split": "train", "clip_key": "titan_clip_328_000576_movie", "source": {"subset": "titan", "scenario": "clip_328", "frame": "000576"}, "frames": ["titan_clip_328_000576_movie_t-3.jpg", "titan_clip_328_000576_movie_t-2.jpg", "titan_clip_328_000576_movie_t-1.jpg", "titan_clip_328_000576_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian approaching intersection", "environment_perception": "An urban shopping street with interlocking pavers forms a single narrow undivided lane with no clear markings; the surface looks damp and vehicle traffic is light while pedestrian flow is heavy. On the right beside a drugstore, a woman in a white shirt carrying shopping bags walks toward the camera along the edge of the intersection area and approaches the lane, so she may enter the ego path. In the center-left ahead, a person pulling a suitcase walks away along the lane and sets a slow pace. Farther ahead, a small truck stands in the lane as several pedestrians weave around it and occasionally cross, constraining passage. Orange cones on the left and shop displays on the right further narrow the corridor.", "hazard_reasoning": "A woman wearing a white shirt and carrying shopping bags is walking on the right side of the intersection toward the ego car. The pedestrian's path may cross the vehicle's path, requiring the driver to slow down and remain vigilant to avoid a collision."}
{"id": "train_05401", "split": "train", "clip_key": "2020-0228-102841_028167_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "028167"}, "frames": ["2020-0228-102841_028167_movie_t-3.jpg", "2020-0228-102841_028167_movie_t-2.jpg", "2020-0228-102841_028167_movie_t-1.jpg", "2020-0228-102841_028167_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Yield to crossing cyclist", "environment_perception": "An urban two-way street with two lanes and no median lies ahead, the pavement smooth and traffic very light as the ego vehicle pauses at a crosswalk beneath an overhead walkway. Ahead, a lady in a black coat and black pants cycles from right to left through the crosswalk, passing directly across the ego lane. A pedestrian in a tan coat is in the crosswalk ahead moving from the left curb toward the center, slowing while watching the cyclist and holding the ego vehicle's pace. Another person stands on the left sidewalk near construction cones and parked bicycles, waiting at the curb without entering the road. No other moving vehicles are visible.", "hazard_reasoning": "There is a lady wearing a black coat and black pants, and cycling across the street from the right side to the left side. Driver should yield to the crossing cyclist to prevent a collision and ensure pedestrian safety."}
{"id": "train_05402", "split": "train", "clip_key": "titan_clip_381_000306_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_381_000306_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_381_000306_movie_t-3_augB1.jpg", "titan_clip_381_000306_movie_t-2_augB1.jpg", "titan_clip_381_000306_movie_t-1_augB1.jpg", "titan_clip_381_000306_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with block-paved surface lacks lane markings or a median, forming a two-way shared roadway; vehicle traffic is light while foot traffic is moderate. Ahead in the center, a cyclist wearing a gray shirt rides toward the ego vehicle in the middle of the road, reducing available space as they approach. On both sides, pedestrians walk along the edges and one steps from the right sidewalk toward the lane, so they may enter the ego path. At the near left, a white car is stopped partly in the lane by the curb, positioned to merge and further constrict the path. Parked vehicles including a black van on the left, cones, and bicycles outside shops narrow the corridor.", "hazard_reasoning": "There is a cyclist wearing a gray shirt, cycling in the middle of the road, towards the ego car. The driver should slow down to avoid a potential collision with the cyclist occupying the vehicle's path."}
{"id": "train_05403", "split": "train", "clip_key": "2020-0131-135401_076787_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "076787"}, "frames": ["2020-0131-135401_076787_movie_t-3.jpg", "2020-0131-135401_076787_movie_t-2.jpg", "2020-0131-135401_076787_movie_t-1.jpg", "2020-0131-135401_076787_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped SUV ahead", "environment_perception": "An urban divided arterial with three same-direction lanes, the rightmost marked for right turns, runs on smooth pavement beside a raised shrub median; traffic is light to moderate and slows toward a signalized intersection. A gray SUV ahead in the right lane is stopped at a red light in the dedicated turning lane, waiting to turn right. A black car ahead in the ego lane proceeds straight but decelerates toward the stop line, setting the ego vehicle's pace. Farther ahead, a white van in the middle through lane nears the junction and slows with the queue. Overhead traffic signals at the intersection display red.", "hazard_reasoning": "There's a gray SUV ahead of the ego-car in the right lane, that is stopped at a red light and is waiting to turn right, because it is in a turning lane. You should be aware of this stopped SUV as it may turn across your path, requiring you to adjust speed or change lanes."}
{"id": "train_05404", "split": "train", "clip_key": "2020-0203-114632_071843_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "071843"}, "frames": ["2020-0203-114632_071843_movie_t-3.jpg", "2020-0203-114632_071843_movie_t-2.jpg", "2020-0203-114632_071843_movie_t-1.jpg", "2020-0203-114632_071843_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated road with two same-direction lanes curves right, bordered by a sound barrier on the left and a guardrail on the right; the pavement is dry and traffic builds to heavy with a queue ahead. A gray van directly ahead in the ego car's left lane slows because of traffic congestion ahead, constraining the ego vehicle's pace. A large white truck in the adjacent right lane runs alongside and also decelerates, limiting chances to change lanes. Farther ahead, a cluster of vehicles bunches around the right-hand curve, forming the bottleneck. Chevron boards along the barrier warn of the curve.", "hazard_reasoning": "There is a gray van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a collision in the congested traffic."}
{"id": "train_05405", "split": "train", "clip_key": "2020-0210-101957_030219_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "030219"}, "frames": ["2020-0210-101957_030219_movie_t-3.jpg", "2020-0210-101957_030219_movie_t-2.jpg", "2020-0210-101957_030219_movie_t-1.jpg", "2020-0210-101957_030219_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road approaches a signalized intersection beneath an elevated roadway, with a painted yellow centerline and smooth pavement; traffic is moderate with a short queue forming while light oncoming flow passes beyond the centerline. A black van is stopped directly ahead in the ego lane because the traffic light facing us is red, holding our vehicle in place. Two small trucks sit stationary to the left along the curbside lane, blocking that lane and limiting room to maneuver. A bicyclist on the far right waits near the corner by the crosswalk, positioned to enter the junction once the signal permits.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver must stop to prevent a collision with the stationary vehicle and comply with the red signal."}
{"id": "train_05406", "split": "train", "clip_key": "2020-0214-102601_024499_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "024499"}, "frames": ["2020-0214-102601_024499_movie_t-3.jpg", "2020-0214-102601_024499_movie_t-2.jpg", "2020-0214-102601_024499_movie_t-1.jpg", "2020-0214-102601_024499_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and a red-surfaced left bus lane runs between mid-rise buildings; pavement is smooth and traffic is moderate, slowing toward a signalized intersection. In the ego lane ahead, cars queue and slow, and a green sedan is stopped because the traffic light at the intersection shows red. A dark van slightly ahead to the right continues straight in the adjacent lane and keeps a steady gap. Farther ahead across lanes, several vehicles move in a staggered line, constraining overall pace. A small light-green car is parked at the right curb outside the travel lane.", "hazard_reasoning": "There is a green sedan stopped in the ego lane because of the red traffic light at the intersection ahead. The driver should stop to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_05407", "split": "train", "clip_key": "2020-0204-150838_074321_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "074321"}, "frames": ["2020-0204-150838_074321_movie_t-3.jpg", "2020-0204-150838_074321_movie_t-2.jpg", "2020-0204-150838_074321_movie_t-1.jpg", "2020-0204-150838_074321_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated expressway with two same-direction lanes is bounded by concrete and noise barriers, and the pavement looks smooth; traffic is light with no opposing flow visible. A black truck travels ahead in the left ego lane, gradually pulling away while continuing straight and effectively setting the immediate pace for the ego vehicle. The adjacent right lane stays open with no vehicles merging or overtaking. Overhead gantries and a pedestrian walkway span the road, and no notable signals or posted speeds are visible.", "hazard_reasoning": "There is a black truck driving in the ego lane, away from the ego car. The truck ahead may brake unexpectedly, so follow at a safe distance."}
{"id": "train_05408", "split": "train", "clip_key": "2020-0226-101332_035674_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "035674"}, "frames": ["2020-0226-101332_035674_movie_t-3.jpg", "2020-0226-101332_035674_movie_t-2.jpg", "2020-0226-101332_035674_movie_t-1.jpg", "2020-0226-101332_035674_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe following distance.", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with a guardrail on the right separating a parallel roadway carrying oncoming traffic; the asphalt looks dry and traffic is heavy and crawling. A black sedan directly ahead in the ego lane slows because congestion stacks up farther forward, setting the ego car's pace. To the left, a red taxi slightly ahead in the adjacent lane creeps ahead in the queue and remains in its lane beside the ego vehicle. On the far-left lane, a large truck travels slowly alongside, keeping close and limiting lateral space near the ego car. Concrete pillars and the right-side barrier further restrict room at the roadside.", "hazard_reasoning": "There's a black sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_05409", "split": "train", "clip_key": "titan_clip_832_000390_movie", "source": {"subset": "titan", "scenario": "clip_832", "frame": "000390"}, "frames": ["titan_clip_832_000390_movie_t-3.jpg", "titan_clip_832_000390_movie_t-2.jpg", "titan_clip_832_000390_movie_t-1.jpg", "titan_clip_832_000390_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with a single narrow carriageway paved with interlocking bricks has painted edge lines and no center divider, and traffic is light. A cyclist approaches in the middle of the lane ahead, riding toward the ego-vehicle and occupying its path. Farther ahead on the right, a pedestrian using a cane steps from the sidewalk toward the road and may enter the lane. Very close on the right edge, another pedestrian walks away along the curb inside the white line, staying near the vehicle's path. A white van stands on the right side ahead and a scooter is parked along the left storefront, slightly narrowing the corridor.", "hazard_reasoning": "The scene shows no vehicles, obstacles, or risky behaviors that warrant intervention. Under these conditions, the driver can continue without specific warnings."}
{"id": "train_05410", "split": "train", "clip_key": "titan_clip_664_000258_movie", "source": {"subset": "titan", "scenario": "clip_664", "frame": "000258"}, "frames": ["titan_clip_664_000258_movie_t-3.jpg", "titan_clip_664_000258_movie_t-2.jpg", "titan_clip_664_000258_movie_t-1.jpg", "titan_clip_664_000258_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around parked vehicle", "environment_perception": "An urban multi-lane road with two same-direction lanes and no median runs through a business district; the asphalt looks worn with patches, and traffic flows light to moderate with steady movement. A white hatchback is parked along the left curb beside the ego lane, cutting the shoulder, and a no-parking sign stands above it. A black minivan ahead to the right travels in the adjacent lane at similar speed and may affect lane changes. Farther ahead in the ego lane, a small delivery van proceeds slowly toward the next block, modestly setting the pace. On the right edge, temporary barriers and cones line a work zone that narrows the rightmost side of the roadway.", "hazard_reasoning": "There is a white hatchback parked on the left side of the road. The parked vehicle partially reduces available roadway, so the driver should manoeuvre around it to maintain safe clearance."}
{"id": "train_05411", "split": "train", "clip_key": "titan_clip_114_000288_movie", "source": {"subset": "titan", "scenario": "clip_114", "frame": "000288"}, "frames": ["titan_clip_114_000288_movie_t-3.jpg", "titan_clip_114_000288_movie_t-2.jpg", "titan_clip_114_000288_movie_t-1.jpg", "titan_clip_114_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of crossing pedestrian", "environment_perception": "An urban back street with a brick-paved surface and no centerline runs straight between tall buildings; it appears as a narrow two-way road with light traffic and clear pavement. A white van stands along the left edge ahead near the zebra crosswalk, encroaching into the travel lane. A pedestrian in a gray shirt waits at the right curb by the crosswalk to cross toward the left, potentially stepping into the ego lane. Another pedestrian already uses the crosswalk ahead, moving across the ego path and constraining the approach. A third person walks along the right sidewalk near storefronts. No traffic signals or medians are visible.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, waiting to cross the right side of the road to the left side, because there is a crosswalk. The pedestrian may step into the lane unexpectedly, so be aware to avoid collision."}
{"id": "train_05412", "split": "train", "clip_key": "titan_clip_27_000282_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_27_000282_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_27_000282_movie_t-3_augB1.jpg", "titan_clip_27_000282_movie_t-2_augB1.jpg", "titan_clip_27_000282_movie_t-1_augB1.jpg", "titan_clip_27_000282_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way carriageway has brick paving and no median; traffic is light but speeds are low as the road is shared with pedestrians. A small white van ahead in the same direction rolls slowly near the center of the lane, setting the pace for the ego vehicle. A pedestrian in all black is in the middle of the road ahead and crosses to the right side, occupying the travel lane and affecting the van and ego vehicle. Pedestrians line both sidewalks; one on the right walks forward with an umbrella close to the curb, while several on the left approach the roadway near storefronts.", "hazard_reasoning": "There is a pedestrian in the middle of the road, wearing all black, crossing to the right side. The driver should slow down to avoid a collision and allow the pedestrian to cross safely."}
{"id": "train_05413", "split": "train", "clip_key": "titan_clip_1336_000336_movie", "source": {"subset": "titan", "scenario": "clip_1336", "frame": "000336"}, "frames": ["titan_clip_1336_000336_movie_t-3.jpg", "titan_clip_1336_000336_movie_t-2.jpg", "titan_clip_1336_000336_movie_t-1.jpg", "titan_clip_1336_000336_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian on left side", "environment_perception": "A narrow urban street with a single lane and no center divider runs between shopfronts; the pavement is smooth and traffic is light with no moving vehicles visible. On the left ahead, a pedestrian in a white shirt and black pants walks away from the ego vehicle in the roadway because equipment racks block the sidewalk, proceeding along the lane and constraining the path. In the center ahead, another person slowly pushes a handcart in the same direction within the lane, occupying the ego path. Farther ahead near the left, a worker stands by a cart at the curb but remains outside the lane. Parked bicycles and a scooter line the right curb, narrowing the usable width.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, and walking away from the ego car, on the left side of the road, because there is equipment on the sidewalk. The driver should be cautious because the pedestrian may step into the road unexpectedly."}
{"id": "train_05414", "split": "train", "clip_key": "titan_clip_8_000084_movie", "source": {"subset": "titan", "scenario": "clip_8", "frame": "000084"}, "frames": ["titan_clip_8_000084_movie_t-3.jpg", "titan_clip_8_000084_movie_t-2.jpg", "titan_clip_8_000084_movie_t-1.jpg", "titan_clip_8_000084_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of approaching pedestrian.", "environment_perception": "A narrow urban street with a single shared lane and block paving runs between tall buildings; there is no median and motor traffic appears light while pedestrian activity is steady. On the right edge near the curb, a pedestrian in a blue shirt walks toward the ego vehicle in the roadway because the sidewalk is narrow, and he may step into the ego path. Far ahead in the center, several pedestrians walk along and intermittently cross the lane, limiting travel speed. On the right ahead, a dark van is stopped near a garage entrance and partially occupies the lane, tightening clearance. Parked bicycles and planters line the curbs.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking on the right side of the road, towards the ego car, because of the narrow sidewalk. The driver should be cautious because the pedestrian may step into the lane due to the constrained sidewalk space."}
{"id": "train_05415", "split": "train", "clip_key": "2020-0206-142535_001739_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "001739"}, "frames": ["2020-0206-142535_001739_movie_t-3.jpg", "2020-0206-142535_001739_movie_t-2.jpg", "2020-0206-142535_001739_movie_t-1.jpg", "2020-0206-142535_001739_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the gray truck.", "environment_perception": "An urban two-way street with one lane each direction and no median is shown, the pavement is smooth, and traffic is moderate and moving slowly. Directly ahead in the ego lane, a black minivan proceeds at low speed. Further ahead near the left side, a gray box truck is stopped close to the curb, constraining the minivan and the ego vehicle, consistent with the note that a gray truck is stopped on the left side of the road. In the opposite lane to the right, an oncoming sedan approaches steadily in its own lane. Along the left sidewalk, a cyclist rides forward behind a guardrail parallel to traffic and remains outside the roadway.", "hazard_reasoning": "There is a gray truck stopped on the left side of the road. This stopped truck partially blocks the driver's forward view and narrows the drivable space. The driver should carefully manoeuvre around it to maintain safe clearance and avoid collision."}
{"id": "train_05416", "split": "train", "clip_key": "titan_clip_1089_000204_movie", "source": {"subset": "titan", "scenario": "clip_1089", "frame": "000204"}, "frames": ["titan_clip_1089_000204_movie_t-3.jpg", "titan_clip_1089_000204_movie_t-2.jpg", "titan_clip_1089_000204_movie_t-1.jpg", "titan_clip_1089_000204_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked hatchback.", "environment_perception": "An urban two-way street with no median, smooth pavement, and light traffic is shown as the ego approaches a zebra crossing. Parked vehicles line the left curb, reducing lane width. A white hatchback is parked on the left side of the road near the crosswalk, stationary and close to the travel lane, leaving little clearance. A pedestrian stands at the left edge beside this car, lingering near the roadway and adjacent to the ego path. Farther ahead on the left, a silver box truck and a small white van remain parked in sequence, further constraining the left side of the lane. No signals are visible.", "hazard_reasoning": "There is a white hatchback parked on the left side of the road. This parked vehicle narrows the lane and may obstruct your path, so manoeuvre carefully around it."}
{"id": "train_05417", "split": "train", "clip_key": "2020-0225-102455_023839_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "023839"}, "frames": ["2020-0225-102455_023839_movie_t-3.jpg", "2020-0225-102455_023839_movie_t-2.jpg", "2020-0225-102455_023839_movie_t-1.jpg", "2020-0225-102455_023839_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban commercial street with multiple lanes in each direction and no median is visible; pavement is clean and the signalized intersection ahead creates heavy, slow traffic. Directly ahead in the ego lane a silver sedan is stopped because of congestion, holding the ego car at a standstill. Slightly ahead to the right, a dark taxi in the adjacent same-direction lane creeps with the queue, limiting room to change lanes. At the left curb a white delivery truck is parked while a pedestrian stands beside it close to the travel lane but remains still. Oncoming traffic to the right also advances slowly through the junction.", "hazard_reasoning": "There is a silver sedan in the ego lane, stopped in front of the ego car, because of the traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle due to the congestion."}
{"id": "train_05418", "split": "train", "clip_key": "titan_clip_1124_000318_movie", "source": {"subset": "titan", "scenario": "clip_1124", "frame": "000318"}, "frames": ["titan_clip_1124_000318_movie_t-3.jpg", "titan_clip_1124_000318_movie_t-2.jpg", "titan_clip_1124_000318_movie_t-1.jpg", "titan_clip_1124_000318_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban two-way street with one lane each direction curves gently right, with no median and slightly worn asphalt; traffic is light. Ahead to the right in the opposing lane, a small brown truck proceeds toward the camera near the curb, occupying much of the narrow carriageway. At the right edge of the road, a pedestrian carrying a black bag stands on the sidewalk beside a pole, close to the curb but outside the lane. No other notable vehicles are nearby, and no traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a pedestrian carrying a black bag and standing at the right side of the road. The pedestrian could step into the roadway unexpectedly, and the parked truck further restricts visibility, so the driver should be aware to avoid a collision."}
{"id": "train_05419", "split": "train", "clip_key": "titan_clip_222_000444_movie", "source": {"subset": "titan", "scenario": "clip_222", "frame": "000444"}, "frames": ["titan_clip_222_000444_movie_t-3.jpg", "titan_clip_222_000444_movie_t-2.jpg", "titan_clip_222_000444_movie_t-1.jpg", "titan_clip_222_000444_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for crossing pedestrians", "environment_perception": "A narrow urban street with a single undivided lane runs between tall buildings; the pavement is smooth and traffic is light. An unsignalized zebra crosswalk spans the road, marked by a blue pedestrian crossing sign on the left. Directly ahead, two pedestrians wearing black and white shirts cross the crosswalk in front of the ego car, one coming from the left curb and the other from the right, blocking the lane. Also from the right, a child on a blue bicycle rides leftward across the crosswalk ahead, passing directly in front of the ego vehicle.", "hazard_reasoning": "There are two pedestrians wearing black and white shirts and crossing a crosswalk in front of the ego car, one from the left and the other from the right. The driver must stop immediately to avoid colliding with them, as they are directly in the vehicle's path and pose an immediate safety risk."}
{"id": "train_05420", "split": "train", "clip_key": "2020-0210-101957_078904_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "078904"}, "frames": ["2020-0210-101957_078904_movie_t-3.jpg", "2020-0210-101957_078904_movie_t-2.jpg", "2020-0210-101957_078904_movie_t-1.jpg", "2020-0210-101957_078904_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban two-lane two-way street with a solid yellow centerline runs between low-rise houses, with guardrails along narrow sidewalks and dry, patchy pavement; traffic is light. A brown mixer truck directly ahead in the ego lane pulls forward and accelerates away, briefly constraining the ego car's pace before opening a larger gap. The oncoming lane stays clear in view, and no pedestrians or cyclists appear near the roadway. No traffic signals or posted speed signs are clearly visible.", "hazard_reasoning": "There is a brown truck in the ego lane, accelerating away from the ego car. Because it may increase the speed differential and affect your following distance, you should start moving to maintain a safe traffic flow."}
{"id": "train_05421", "split": "train", "clip_key": "2020-0220-151845_057087_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "057087"}, "frames": ["2020-0220-151845_057087_movie_t-3.jpg", "2020-0220-151845_057087_movie_t-2.jpg", "2020-0220-151845_057087_movie_t-1.jpg", "2020-0220-151845_057087_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided roadway runs under an elevated expressway, with two same-direction lanes, a concrete barrier on the right, and a guardrail separating a parallel carriageway on the left; the pavement is dry and traffic is slow. A flatbed truck carrying a yellow-covered load is directly ahead in the ego lane and slows, constraining the ego car as congestion builds. To the right, a light blue minivan keeps pace at low speed alongside, limiting a lane change. Farther ahead in the right lane, a small box truck also creeps forward, adding to the queue.", "hazard_reasoning": "There's a pink semi-truck slowing down in front of the ego car, in the ego lane due to traffic congestion ahead. The truck's deceleration signals reduced traffic flow ahead, so the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_05422", "split": "train", "clip_key": "2020-0217-144444_011601_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-144444_011601_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-144444_011601_movie_t-3_augB1.jpg", "2020-0217-144444_011601_movie_t-2_augB1.jpg", "2020-0217-144444_011601_movie_t-1_augB1.jpg", "2020-0217-144444_011601_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban street with trees and tall buildings features a smooth two-lane road with no median; the ego-vehicle drives in the left lane and overall traffic is light. A pedestrian wearing a cap and brown coat, carrying a book, crosses from right to left directly in front of the ego-car, entering the ego lane and temporarily occupying its path. A dark hatchback ahead in the same lane rolls forward slowly near the crossing point. Numerous cars are parked along the left curb and in bays on the right, slightly narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a cap, a brown coat and carrying a book, crossing the road from right to left, in front of the ego-car. The driver should carefully manoeuvre around the pedestrian to avoid a potential collision."}
{"id": "train_05423", "split": "train", "clip_key": "titan_clip_1248_000252_movie", "source": {"subset": "titan", "scenario": "clip_1248", "frame": "000252"}, "frames": ["titan_clip_1248_000252_movie_t-3.jpg", "titan_clip_1248_000252_movie_t-2.jpg", "titan_clip_1248_000252_movie_t-1.jpg", "titan_clip_1248_000252_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around him", "environment_perception": "A narrow urban commercial street with a single lane curves gently right, the pavement dry and smooth and vehicle traffic light with no opposing flow visible. On the left edge just ahead, a man wearing a blue T-shirt and black pants stands beside a stopped delivery truck, offloading crates, which narrows the lane and may constrain the ego vehicle's pace. The delivery truck itself is parked along the curb with boxes placed on the ground near its rear, encroaching slightly into the roadway and forming an obstacle. On the right sidewalk, two pedestrians walk past the bollards in opposite directions, remaining on the path and not entering the lane. Farther ahead, a few more pedestrians move along storefronts on the left.", "hazard_reasoning": "There is a man, wearing a blue t-shirt and black pants, standing, on the left side of the road, because he is offloading the truck. The driver should carefully manoeuvre around the standing pedestrian unloading crates to avoid a collision."}
{"id": "train_05424", "split": "train", "clip_key": "2020-0218-151547_003959_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "003959"}, "frames": ["2020-0218-151547_003959_movie_t-3.jpg", "2020-0218-151547_003959_movie_t-2.jpg", "2020-0218-151547_003959_movie_t-1.jpg", "2020-0218-151547_003959_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes runs between tall buildings, with a concrete barrier on the right separating an adjacent roadway; the pavement is smooth and traffic is moderate, easing from a stop at a signal. A silver hatchback directly ahead in the ego lane begins to pull away as the light turns green, opening a gap and guiding the ego car's pace. In the lane to the left, a white minivan slightly ahead moves off slowly in parallel, remaining in its lane without encroaching. Farther left, additional cars queue and advance gradually. Overhead traffic lights show green and gantry signs display straight-ahead arrows. Vehicles on the adjacent roadway to the right travel steadily behind the barrier and do not interact with the ego lane.", "hazard_reasoning": "There is a silver hatchback starting to move away from the ego car, in the ego lane in front of the ego car, because of the green traffic light. The driver should start moving promptly to maintain traffic flow and keep a safe following distance as the signal has turned green."}
{"id": "train_05425", "split": "train", "clip_key": "2020-0214-145407_064043_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "064043"}, "frames": ["2020-0214-145407_064043_movie_t-3.jpg", "2020-0214-145407_064043_movie_t-2.jpg", "2020-0214-145407_064043_movie_t-1.jpg", "2020-0214-145407_064043_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down to avoid collision", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with two lanes in the ego direction and a metal median to the right separating oncoming traffic; the pavement is dry and traffic is moderate. A white van directly ahead of the ego car moves right and changes into the adjacent lane, completing the lane change in front of the ego. A small white pickup slightly ahead in the left curb lane continues straight at a steady pace, influencing the van's maneuver and modestly setting the ego's pace. Oncoming cars travel on the opposite carriageway beyond the guardrail to the right and pass smoothly without interaction. An overhead electronic sign with Japanese text spans the roadway.", "hazard_reasoning": "A white van lane changing in front of the ego car, to the right lane. The van's sudden lane change could cause a collision if the driver does not slow down."}
{"id": "train_05426", "split": "train", "clip_key": "2020-0131-135401_001142_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "001142"}, "frames": ["2020-0131-135401_001142_movie_t-3.jpg", "2020-0131-135401_001142_movie_t-2.jpg", "2020-0131-135401_001142_movie_t-1.jpg", "2020-0131-135401_001142_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with a single lane in each direction and a solid orange centerline runs between mid-rise buildings; the pavement is dry and smooth and traffic is light. A white box truck is stopped directly ahead in the ego lane, blocking the lane and constraining the ego's movement. On the left, several pedestrians walk along the sidewalk beside a narrow raised island, moving parallel to traffic near the curb without entering the roadway.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The truck is stopped directly in your lane, so you must stop to avoid a collision."}
{"id": "train_05427", "split": "train", "clip_key": "2020-0210-101957_007911_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "007911"}, "frames": ["2020-0210-101957_007911_movie_t-3.jpg", "2020-0210-101957_007911_movie_t-2.jpg", "2020-0210-101957_007911_movie_t-1.jpg", "2020-0210-101957_007911_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each way runs past shops and apartments, divided by a solid yellow line on clean pavement; traffic is moderate and briefly slows near a bus stop. A green sedan directly ahead in the ego lane slows as a bus farther ahead pulls out from the left curb into the ego lane, constraining the pace. The bus merges from a stop with waiting people and occupies part of the lane in front of the sedan. Oncoming traffic, including a red SUV and a white wagon, proceeds in the opposite lane and stays clear of the ego path. A roadside sign on the left shows no U-turn and no parking.", "hazard_reasoning": "There is a green sedan slowing in the ego lane, in front of the ego car, because there is a bus turning into the ego lane ahead. The bus merging into the lane forces the vehicle ahead to slow, requiring the driver to reduce speed to maintain a safe following distance."}
{"id": "train_05428", "split": "train", "clip_key": "titan_clip_830_000588_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_830_000588_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_830_000588_movie_t-3_augB1.jpg", "titan_clip_830_000588_movie_t-2_augB1.jpg", "titan_clip_830_000588_movie_t-1_augB1.jpg", "titan_clip_830_000588_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban shopping street with a single narrow shared lane on stone pavers shows very light traffic, with no median and storefronts tight to the roadway. Ahead, a pedestrian with a backpack walks in the middle of the road away from the ego vehicle, diverting around a parked vehicle and occupying the travel path. A delivery truck stands ahead slightly left with its rear open, partially blocking the lane and constraining passage. On the right at the curb, a man stands beside a storefront close to the edge of the lane. The corridor is further narrowed by shop signs and a parked bicycle near the truck.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking in the middle of the road, away from the ego car, because of the parked vehicle. The driver should manoeuvre carefully around the pedestrian to avoid a collision."}
{"id": "train_05429", "split": "train", "clip_key": "titan_clip_891_000222_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_891_000222_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_891_000222_movie_t-3_augB1.jpg", "titan_clip_891_000222_movie_t-2_augB1.jpg", "titan_clip_891_000222_movie_t-1_augB1.jpg", "titan_clip_891_000222_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian crossing ahead", "environment_perception": "An urban narrow two-way street with one lane each direction and no median is shown; the pavement looks smooth, and traffic is light to moderate, moving slowly past curbside parking. Several cars ahead in the ego lane, including a white sedan, roll forward in a short queue and set the pace for the ego vehicle. A pedestrian wearing a gray shirt crosses mid-block ahead from the right side to the left, moving through the middle of the road and into the ego lane. Parked cars line the left curb, one with its rear hatch open, narrowing the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, crossing the street in the middle of the road, from the right side to the left side. The pedestrian is crossing mid-block without a designated crosswalk, so the driver should slow down and be cautious to prevent a collision."}
{"id": "train_05430", "split": "train", "clip_key": "2020-0203-114632_059676_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "059676"}, "frames": ["2020-0203-114632_059676_movie_t-3.jpg", "2020-0203-114632_059676_movie_t-2.jpg", "2020-0203-114632_059676_movie_t-1.jpg", "2020-0203-114632_059676_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban four-lane two-way road with smooth pavement and a short line of flexible posts forming a center median is seen, and traffic is light to moderate. The ego vehicle proceeds in the left of two same-direction lanes toward a signalized crosswalk and intersection, with a posted speed limit of 50. A white box truck ahead in the ego lane continues straight at a steady pace and may constrain the ego vehicle's speed. To the right, oncoming traffic consists of a silver minivan and a motorcycle moving through the intersection, remaining separated by the posts and not entering the ego lane. A pedestrian stands on the left sidewalk near the crosswalk and may enter the lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05431", "split": "train", "clip_key": "titan_clip_1304_000498_movie", "source": {"subset": "titan", "scenario": "clip_1304", "frame": "000498"}, "frames": ["titan_clip_1304_000498_movie_t-3.jpg", "titan_clip_1304_000498_movie_t-2.jpg", "titan_clip_1304_000498_movie_t-1.jpg", "titan_clip_1304_000498_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian pulling a suitcase", "environment_perception": "An urban shopping street with a single narrow mixed-traffic lane and no divider runs through clean pavement, and overall vehicular flow is light while pedestrian activity is moderate near a right-side side street. Several pedestrians ahead in the ego lane walk away from the camera near the centerline, effectively setting a slow pace for the vehicle. On the near right edge, a man in a white shirt pulls a suitcase and walks away from the ego car along the curb, staying outside the travel path. A white van stands stopped on the left side ahead, partially encroaching into the lane and narrowing the passage. A blue right-pointing arrow sign at the corner indicates traffic may proceed to a right-hand side street by the restaurant.", "hazard_reasoning": "There is a man wearing a white shirt, pulling a suitcase, and walking on the right side of the road, away from the ego car. The pedestrian may unexpectedly step further into the lane, so the driver should stay alert and reduce speed to avoid collision."}
{"id": "train_05432", "split": "train", "clip_key": "titan_clip_760_000330_movie", "source": {"subset": "titan", "scenario": "clip_760", "frame": "000330"}, "frames": ["titan_clip_760_000330_movie_t-3.jpg", "titan_clip_760_000330_movie_t-2.jpg", "titan_clip_760_000330_movie_t-1.jpg", "titan_clip_760_000330_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way roadway lacking a centerline is shown; the pavement looks slightly worn and vehicle traffic is light while the ego car moves slowly amid dense foot traffic. Several pedestrians ahead in the ego lane cross and walk both away from and toward the camera, constraining speed. On the right by the ABC-MART storefront, a pedestrian wearing a white shirt and black pants walks toward the ego car along the curb and may step into its path. On the left, a small truck and a white van stand with cones and cargo, protruding into the lane and further narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking along the right side of the road, toward the ego car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should slow down to avoid a potential collision, aligning with the warning to slow down."}
{"id": "train_05433", "split": "train", "clip_key": "2020-0225-145150_032407_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "032407"}, "frames": ["2020-0225-145150_032407_movie_t-3.jpg", "2020-0225-145150_032407_movie_t-2.jpg", "2020-0225-145150_032407_movie_t-1.jpg", "2020-0225-145150_032407_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane two-way arterial runs between mid-rise buildings, the dry pavement in good condition, with heavy queuing in the ego direction and lighter oncoming flow to the right. Immediately ahead in the ego lane, a blue truck is stopped because of traffic congestion ahead, blocking our path. In the adjacent left lane slightly ahead, a white mini truck waits in the same queue and remains stationary alongside us. Farther ahead, several cars line up across the same-direction lanes, creeping intermittently and constraining progress, while oncoming cars in the right-side lanes pass steadily. A pedestrian overpass spans the road, and a no-parking sign is posted on it.", "hazard_reasoning": "There is a blue truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle and adapt to the congested traffic conditions."}
{"id": "train_05434", "split": "train", "clip_key": "titan_clip_777_000552_movie", "source": {"subset": "titan", "scenario": "clip_777", "frame": "000552"}, "frames": ["titan_clip_777_000552_movie_t-3.jpg", "titan_clip_777_000552_movie_t-2.jpg", "titan_clip_777_000552_movie_t-1.jpg", "titan_clip_777_000552_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with a single marked lane runs between shops, the pavement is in good condition, and traffic is light with no divider. Ahead-left, a male pedestrian in a black shirt and cap walks away from the camera within the ego lane along the left edge, so he may encroach on the vehicle's path. Just beyond him, another pedestrian lingers near the left curb and turns toward the storefront, reducing clearance as the car approaches. Far ahead in the same lane, a small white van appears stationary, potentially constraining the pace. Several bicycles are parked along the right curb, narrowing the usable roadway.", "hazard_reasoning": "There is a male pedestrian wearing a black shirt and a cap, walking down the left side of the road, away from the ego-car, in the ego lane. The pedestrian is in the vehicle's path and may continue walking across the lane, so the driver must manoeuvre safely around him."}
{"id": "train_05435", "split": "train", "clip_key": "2020-0213-143552_007933_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_007933_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_007933_movie_t-3_augB1.jpg", "2020-0213-143552_007933_movie_t-2_augB1.jpg", "2020-0213-143552_007933_movie_t-1_augB1.jpg", "2020-0213-143552_007933_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with multiple same-direction lanes and a right-turn bay has dry, smooth pavement and light traffic moving freely. A white van ahead in the ego lane continues straight at a steady pace, loosely setting the speed. Farther ahead slightly left of center, a black sedan emerges from a hidden intersection on the left and begins merging toward the ego lane. Oncoming vehicles pass steadily on the far side of the roadway. Several cars are parked along the right curb near the turn bay. Overhead lane signals are visible at the upcoming intersection.", "hazard_reasoning": "There's a black sedan driving towards the ego lane, because it is merging from a hidden intersection on the left side of the road. The sedan may enter your lane unexpectedly, so you should slow down to allow it to merge safely."}
{"id": "train_05436", "split": "train", "clip_key": "2020-0206-101736_070830_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "070830"}, "frames": ["2020-0206-101736_070830_movie_t-3.jpg", "2020-0206-101736_070830_movie_t-2.jpg", "2020-0206-101736_070830_movie_t-1.jpg", "2020-0206-101736_070830_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision with slowing truck", "environment_perception": "An urban two-way road runs past low-rise buildings, with the ego car in the single left lane and two opposing lanes across double solid white lines; the pavement is smooth and traffic is moderate with steady flow. Ahead in the ego lane, a white truck slows and continues straight, constraining the ego car's pace as described. To the right across the divider, a black van in the near oncoming lane approaches at a steady speed and passes opposite the ego's path without interfering. Farther ahead in the other oncoming lane, a small car and a light van proceed toward the camera, maintaining their lanes and contributing to the opposing flow. An overhead gantry spans the roadway, and no signals or unusual signs are prominent.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's reduced speed could lead to a collision if the driver does not decrease speed in time."}
{"id": "train_05437", "split": "train", "clip_key": "2020-0205-103411_054263_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "054263"}, "frames": ["2020-0205-103411_054263_movie_t-3.jpg", "2020-0205-103411_054263_movie_t-2.jpg", "2020-0205-103411_054263_movie_t-1.jpg", "2020-0205-103411_054263_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial runs between mid-rise buildings with smooth dry pavement, and traffic is moderate but presently queued at a signalized intersection. Directly ahead in the ego lane a black car is stopped at the light, holding our lane. In the left lane a black station wagon waits alongside as part of the same queue. In the right lane a red pickup carrying two spare tires in the bed is also stopped slightly ahead. Overhead traffic signals control the junction, and a guardrail lines the roadway on the right.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, because of the red traffic lights. The stopped vehicle blocks your path and you must stop to avoid a rear-end collision."}
{"id": "train_05438", "split": "train", "clip_key": "titan_clip_184_000066_movie", "source": {"subset": "titan", "scenario": "clip_184", "frame": "000066"}, "frames": ["titan_clip_184_000066_movie_t-3.jpg", "titan_clip_184_000066_movie_t-2.jpg", "titan_clip_184_000066_movie_t-1.jpg", "titan_clip_184_000066_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked vehicle", "environment_perception": "The ego-vehicle proceeds along a very narrow urban side street with a single unmarked lane and smooth asphalt dotted with manholes; traffic is light with no moving vehicles. On the left, a white minivan is parked on the side of the road, jutting slightly into the lane and narrowing the passage. Far ahead in the center of the lane, a pedestrian walks away along the roadway, occupying the ego path. Near left, a parked scooter rests at the curb and stays clear of the travel line. Storefronts crowd the edges with signs, crates, and a blue bin on the right, but they remain off the carriageway.", "hazard_reasoning": "The is a white minivan parked on the left side of the road. The driver should manoeuvre around the parked vehicle to avoid collision."}
{"id": "train_05439", "split": "train", "clip_key": "2020-0129-105040_002888_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "002888"}, "frames": ["2020-0129-105040_002888_movie_t-3.jpg", "2020-0129-105040_002888_movie_t-2.jpg", "2020-0129-105040_002888_movie_t-1.jpg", "2020-0129-105040_002888_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A straight two-way urban street with one lane each way runs between midrise buildings, the directions divided by a low rubber-bump median; the pavement is clean and traffic is light in the ego direction but heavier opposite. To the right, a line of oncoming cars moves slowly along the median and occasionally stops, remaining separated from the ego lane. On the left sidewalk near a storefront, a cyclist and a pedestrian wait behind a railing without entering the roadway. Farther ahead on the left curb, a delivery van stands in a bay and could merge back into the travel lane. A pole on the left shows a posted speed-limit sign among other regulatory signs.", "hazard_reasoning": "There are no visible hazards or obstacles on the road. Traffic is light and conditions are normal, so the driver can continue without any special maneuvers."}
{"id": "train_05440", "split": "train", "clip_key": "2020-0220-151845_056140_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "056140"}, "frames": ["2020-0220-151845_056140_movie_t-3.jpg", "2020-0220-151845_056140_movie_t-2.jpg", "2020-0220-151845_056140_movie_t-1.jpg", "2020-0220-151845_056140_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes runs under an elevated structure, bordered by a concrete barrier on the left and a striped buffer on the right; the pavement is dry and traffic is moderate with a gentle slowdown. A red truck directly ahead in the ego lane slows and constrains the ego vehicle's pace. In the adjacent right lane, a black sedan proceeds forward and overtakes, keeping clear of the ego lane. Farther ahead near the underpass, several cars travel steadily, contributing to the slow flow. An overhead blue direction sign indicates distances to Kofu, Hachioji, and Takao.", "hazard_reasoning": "There is a red truck slowing down in the ego lane. The truck's sudden deceleration poses a collision risk if the driver maintains speed, so the driver should slow down to maintain a safe following distance."}
{"id": "train_05441", "split": "train", "clip_key": "2020-0214-102601_018886_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "018886"}, "frames": ["2020-0214-102601_018886_movie_t-3.jpg", "2020-0214-102601_018886_movie_t-2.jpg", "2020-0214-102601_018886_movie_t-1.jpg", "2020-0214-102601_018886_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban intersection with a single-lane approach meets a zebra crosswalk; the pavement is worn but serviceable and traffic is light. Two pedestrians cross directly ahead from right to left at a steady walking pace, occupying the ego vehicle's path. A cyclist crosses the road from the left via the same crosswalk in front of the ego lane, passing through the ego vehicle's path. An overhead traffic signal is visible, and a right-turn-only sign stands on the right side of the intersection. Low buildings, a fenced work area, and a pedestrian refuge island lie ahead, with no moving vehicles nearby.", "hazard_reasoning": "There is a cyclist crossing the road from the left side via a crosswalk, in front of the ego car in the ego lane. The driver should stop because the cyclist is entering the vehicle's path and poses a collision risk."}
{"id": "train_05442", "split": "train", "clip_key": "titan_clip_1156_000450_movie", "source": {"subset": "titan", "scenario": "clip_1156", "frame": "000450"}, "frames": ["titan_clip_1156_000450_movie_t-3.jpg", "titan_clip_1156_000450_movie_t-2.jpg", "titan_clip_1156_000450_movie_t-1.jpg", "titan_clip_1156_000450_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way street with no physical median is lightly trafficked, and the pavement looks smooth with a darker resurfaced strip in the rightmost lane. Ahead in the ego lane, a helmeted cyclist towing a small carriage changes left into the adjacent lane where there is space, briefly influencing the ego car's pace before clearing its path. Far ahead, a few vehicles in the same direction continue steadily and remain distant, while occasional oncoming cars pass in the opposite lane without effect. Construction activity lines the curbs, with cones along the left edge and a work zone with crew and barricades on the right, but none extend into the travel lanes.", "hazard_reasoning": "There is a cyclist wearing a helmet, with a carriage, lane changing in front of the ego car, from the ego lane to the left lane, because there is space in the left lane. The cyclist's sudden lane change into the ego-vehicle's path requires the driver to slow down and maintain a safe distance to avoid a collision."}
{"id": "train_05443", "split": "train", "clip_key": "2020-0220-102630_005962_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "005962"}, "frames": ["2020-0220-102630_005962_movie_t-3.jpg", "2020-0220-102630_005962_movie_t-2.jpg", "2020-0220-102630_005962_movie_t-1.jpg", "2020-0220-102630_005962_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs toward an intersection beneath an overpass; the asphalt looks smooth and traffic is moderate, heavier in the right-turn lane. Cones line the left curb beside a building while several vehicles stand or creep along the curbside to the right. Ahead in the ego lane, a silver sedan is turning left through the intersection in the middle of the junction on a green signal. To the right, a dark van and several cars queue slowly in the right-turn lane near the intersection. Pedestrians walk along the left sidewalk behind the cones without approaching the roadway.", "hazard_reasoning": "There is a silver sedan turning left in the ego lane, in the middle of the intersection, because of a green traffic light. The left-turning vehicle may cut across the ego-vehicle's path, so slowing down allows more time to react and avoid a collision."}
{"id": "train_05444", "split": "train", "clip_key": "titan_clip_195_000174_movie", "source": {"subset": "titan", "scenario": "clip_195", "frame": "000174"}, "frames": ["titan_clip_195_000174_movie_t-3.jpg", "titan_clip_195_000174_movie_t-2.jpg", "titan_clip_195_000174_movie_t-1.jpg", "titan_clip_195_000174_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban canyon of tall buildings lines a narrow two-way road without a median, the pavement is smooth, and traffic remains light as the ego vehicle proceeds in the left lane. A small car ahead in the same lane moves steadily away, loosely setting the pace. A white delivery van stands along the left edge close to the ego car, protruding into the lane and reducing clearance. A pedestrian wearing a white shirt steps from the right sidewalk and crosses right to left in front of the ego vehicle. An open garage on the right contains a stationary car near the entrance, while other pedestrians stay on the sidewalks.", "hazard_reasoning": "There is a pedestrian wearing a white shirt crossing the street from the right to the left in front of the ego-car. The driver should slow down to avoid a potential collision with the crossing pedestrian."}
{"id": "train_05445", "split": "train", "clip_key": "titan_clip_434_000306_movie", "source": {"subset": "titan", "scenario": "clip_434", "frame": "000306"}, "frames": ["titan_clip_434_000306_movie_t-3.jpg", "titan_clip_434_000306_movie_t-2.jpg", "titan_clip_434_000306_movie_t-1.jpg", "titan_clip_434_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single unmarked lane and block-paved surface is lined with shops; there is no median and motor traffic is light while pedestrian activity is moderate. The ego vehicle rolls slowly toward an intersection ahead where a white car passes across from right to left. On the left side, a woman in white pants with a lanyard and a sleeveless blue shirt walks toward the ego vehicle along the road edge and may step into the lane. Ahead in the center of the lane, another pedestrian walks away from the camera, occupying the path and constraining the speed. At the far end, the crossing white car briefly blocks the exit of the narrow street. A parked bicycle stands by the right storefront.", "hazard_reasoning": "There is a woman wearing white pants, a lanyard, and a sleeveless blue shirt, and walking on the left side of the road, towards the ego car. The driver should slow down because the pedestrian may step into the road, creating a collision risk without warning."}
{"id": "train_05446", "split": "train", "clip_key": "titan_clip_861_000372_movie", "source": {"subset": "titan", "scenario": "clip_861", "frame": "000372"}, "frames": ["titan_clip_861_000372_movie_t-3.jpg", "titan_clip_861_000372_movie_t-2.jpg", "titan_clip_861_000372_movie_t-1.jpg", "titan_clip_861_000372_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to crossing pedestrian", "environment_perception": "An urban two-way street with a single narrow lane each direction approaches a small intersection with zebra crossings; the pavement looks clean and traffic is light with no cars in the ego lane. Ahead-right at the crosswalk, a person in a blue shirt and brown pants moves leftward across the street on a bicycle, cutting across the ego path. On the left sidewalk near the corner, another pedestrian lingers by the curb, posing a minor possibility of stepping into the crossing. Farther ahead on the right sidewalk, a person walks uphill away from the intersection and does not affect the lane. Overhead signal heads are present but no clear aspect is visible in the shot.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and brown pants, crossing the street to the left side, at the pedestrian crossing. You should yield because the pedestrian is already on the crosswalk and may enter your path, requiring you to slow down to avoid a collision."}
{"id": "train_05447", "split": "train", "clip_key": "titan_clip_1084_000318_movie", "source": {"subset": "titan", "scenario": "clip_1084", "frame": "000318"}, "frames": ["titan_clip_1084_000318_movie_t-3.jpg", "titan_clip_1084_000318_movie_t-2.jpg", "titan_clip_1084_000318_movie_t-1.jpg", "titan_clip_1084_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban back street with a single lane and no median runs between close building fronts, the asphalt slightly worn and traffic otherwise very light. On the left edge of the ego lane, a pedestrian wearing a cap, red shirt, and blue shorts stands still against the wall, encroaching on the vehicle's path. Farther ahead in the lane, another pedestrian in dark clothing walks away near the center, continuing straight and effectively setting the pace. No other moving vehicles are visible and no traffic signals or speed limit signs appear. A raised sidewalk lines the right side with storefronts and posters.", "hazard_reasoning": "A pedestrian, wearing a cap, red shirt and blue shorts, is standing in the ego lane, towards the left side of the road. The driver should carefully manoeuvre around the pedestrian to avoid collision."}
{"id": "train_05448", "split": "train", "clip_key": "2020-0217-144444_012187_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "012187"}, "frames": ["2020-0217-144444_012187_movie_t-3.jpg", "2020-0217-144444_012187_movie_t-2.jpg", "2020-0217-144444_012187_movie_t-1.jpg", "2020-0217-144444_012187_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "An urban scene on a smooth two-lane road with a low hedge median; the ego lane bends gently right and traffic is light. Far ahead in the ego lane, a small white van proceeds slowly along the bend, setting the pace for following vehicles. On the opposite side beyond the median to the right, a few oncoming cars move steadily through the curve, remaining separated from the ego path. On the left sidewalk, pedestrians walk along behind a guardrail with no sign of crossing. On the left edge of the road, a parked vehicle has a traffic cone placed in front of it, slightly narrowing the shoulder.", "hazard_reasoning": "There is a traffic cone on the left side of the road, in front of a parked vehicle. The cone indicates an obstacle requiring drivers to manoeuvre carefully around it to maintain safe passage."}
{"id": "train_05449", "split": "train", "clip_key": "titan_clip_1197_000456_movie", "source": {"subset": "titan", "scenario": "clip_1197", "frame": "000456"}, "frames": ["titan_clip_1197_000456_movie_t-3.jpg", "titan_clip_1197_000456_movie_t-2.jpg", "titan_clip_1197_000456_movie_t-1.jpg", "titan_clip_1197_000456_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian walking on the right", "environment_perception": "An urban back street with a single narrow lane and no centerline rises gently between tall buildings; the block-paved surface is patchy, and traffic is light with no moving vehicles nearby. On the right edge, a pedestrian wearing a backpack walks away from the camera along the curb, close to the ego vehicle's path but keeping right. Farther ahead in the center of the roadway, another pedestrian walks uphill, remaining in the lane and likely to affect the ego vehicle's pace. On the left in the foreground, a red delivery scooter is parked partly in the lane, reducing clearance.", "hazard_reasoning": "There is a pedestrian wearing a backpack and walking on the right side of the road, away from the ego car. The driver should be cautious because the narrow, curved alley and pedestrian's position could lead to unexpected crossing into the lane."}
{"id": "train_05450", "split": "train", "clip_key": "2020-0129-105040_043507_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "043507"}, "frames": ["2020-0129-105040_043507_movie_t-3.jpg", "2020-0129-105040_043507_movie_t-2.jpg", "2020-0129-105040_043507_movie_t-1.jpg", "2020-0129-105040_043507_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with a right-side guardrail and smooth pavement; traffic is heavy and momentarily stopped at the intersection. A silver minivan ahead in the ego lane is stopped for a red light, holding the ego vehicle. A large blue truck alongside in the lane to the left is also stopped, restricting lateral space. Farther ahead in the middle lane, a white van and several cars queue and creep toward the intersection, setting the slow pace. An overhead traffic signal displays red for the through lanes.", "hazard_reasoning": "There is a silver minivan stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid colliding with the stationary vehicle at the red light."}
{"id": "train_05451", "split": "train", "clip_key": "2020-0207-151349_046731_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "046731"}, "frames": ["2020-0207-151349_046731_movie_t-3.jpg", "2020-0207-151349_046731_movie_t-2.jpg", "2020-0207-151349_046731_movie_t-1.jpg", "2020-0207-151349_046731_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban road beneath an elevated expressway carries same-direction traffic in multiple lanes bounded by guardrails; the asphalt looks dry and slightly worn, and flow is light to moderate. Ahead to the right, a silver van changes from the right lane into the ego lane in front of the ego car, matching speed and narrowing the gap. Farther ahead, a white truck in the right lane continues straight at a steady pace, remaining separate from the ego path. On the right shoulder behind the barrier, a maintenance vehicle and a person stand stationary.", "hazard_reasoning": "There is a silver van lane changing in front of the ego car, from the right lane to the ego lane. The van is merging into the ego lane with limited space, so the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_05452", "split": "train", "clip_key": "2020-0225-102455_062297_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "062297"}, "frames": ["2020-0225-102455_062297_movie_t-3.jpg", "2020-0225-102455_062297_movie_t-2.jpg", "2020-0225-102455_062297_movie_t-1.jpg", "2020-0225-102455_062297_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial has three lanes in the ego direction, separated from oncoming traffic by a metal-fenced median; the pavement is smooth and traffic is light to moderate. A white van ahead in the ego lane drives steadily away from the ego car, slightly widening the gap and setting the pace. A pedestrian on the left sidewalk walks along the railings parallel to traffic but stays outside the roadway. In the opposite carriageway beyond the median, a white box truck approaches as oncoming traffic, well separated by the barrier. Overhead gantries with signal heads span the road, without a clearly visible active aspect.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. Because the van is directly ahead and could decelerate unexpectedly, be aware of its movements to maintain a safe following distance."}
{"id": "train_05453", "split": "train", "clip_key": "titan_clip_479_000480_movie", "source": {"subset": "titan", "scenario": "clip_479", "frame": "000480"}, "frames": ["titan_clip_479_000480_movie_t-3.jpg", "titan_clip_479_000480_movie_t-2.jpg", "titan_clip_479_000480_movie_t-1.jpg", "titan_clip_479_000480_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be cautious of cyclist veering around parked truck", "environment_perception": "A narrow urban two-way street with stone block pavement runs between shops, with no median and light, slow traffic. Ahead on the right, a cyclist wearing a black T-shirt and carrying a backpack rides toward the ego vehicle, moving into the ego lane to pass a parked vehicle and briefly encroaching on our path. A small flatbed truck ahead on the right is stopped for loading, narrowing the same-direction lane and constraining the corridor. A larger white truck stands at the near right curb, further reducing available width and leaving effectively one usable lane. No prominent traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a cyclist wearing a black t-shirt, carrying a backpack, cycling on the right side of the road towards the ego car, because of the parked vehicle. The cyclist may swerve into the vehicle's path to avoid the parked truck, so the driver should be cautious to prevent a collision."}
{"id": "train_05454", "split": "train", "clip_key": "titan_clip_761_000486_movie", "source": {"subset": "titan", "scenario": "clip_761", "frame": "000486"}, "frames": ["titan_clip_761_000486_movie_t-3.jpg", "titan_clip_761_000486_movie_t-2.jpg", "titan_clip_761_000486_movie_t-1.jpg", "titan_clip_761_000486_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban commercial street with two-way traffic and smooth pavement has no median, and vehicle flow is slow as the ego car moves through a crowded shopping area. Ahead in the ego lane, a cluster of pedestrians crosses from left to right near an intersection, constraining the ego vehicle's pace. On the right edge near the camera, a pedestrian wearing a white shirt and blue pants walks toward the ego car along the lane line and may step into the path. On the left, a stopped delivery truck with two people standing beside it encroaches on the lane and narrows the passage. A white SUV is parked along the right curb, further squeezing the roadway.", "hazard_reasoning": "A pedestrian wearing a white shirt and blue pants is walking on the right side of the road, toward the ego car. The pedestrian may step into the vehicle's path, so the driver should slow down to maintain a safe distance."}
{"id": "train_05455", "split": "train", "clip_key": "titan_clip_944_000528_movie", "source": {"subset": "titan", "scenario": "clip_944", "frame": "000528"}, "frames": ["titan_clip_944_000528_movie_t-3.jpg", "titan_clip_944_000528_movie_t-2.jpg", "titan_clip_944_000528_movie_t-1.jpg", "titan_clip_944_000528_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single mixed-traffic lane and bollards along the right sidewalk runs past storefronts; the asphalt is smooth. Traffic is light and slowed by a large delivery truck stopped on the left with its rear door open, intruding into the lane. Ahead in the center, a pedestrian in a white T-shirt walks away from the ego vehicle in the middle of the road, keeping clear of the parked vehicle on the left and remaining in the vehicle's path. Slightly farther ahead, a cyclist rides in the same direction near the lane center at a steady pace, further constraining speed. At the back of the truck on the left, a worker stands beside the open cargo area near the travel lane. Bollards and parked items along the right edge narrow the corridor.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, walking in the middle of the road, away from the ego car, because of the parked vehicle on the left. The obstructed sidewalk and truck-blocked view force the pedestrian into the roadway, increasing collision risk, so you should slow down."}
{"id": "train_05456", "split": "train", "clip_key": "2020-0207-151349_065706_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "065706"}, "frames": ["2020-0207-151349_065706_movie_t-3.jpg", "2020-0207-151349_065706_movie_t-2.jpg", "2020-0207-151349_065706_movie_t-1.jpg", "2020-0207-151349_065706_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multilane arterial has two lanes in each direction with a guardrail median and smooth pavement, and traffic is moderate, slowing near overhead guide signs for an upcoming junction. A black van ahead in the ego lane is stopped because of congestion ahead, blocking the lane and setting the pace. In the adjacent right lane, a white sedan slightly ahead continues forward, limiting an immediate lane change. Oncoming cars and trucks move steadily on the far side of the median.", "hazard_reasoning": "There is a black van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver needs to stop to prevent a collision with the stationary van."}
{"id": "train_05457", "split": "train", "clip_key": "2020-0207-151349_092825_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "092825"}, "frames": ["2020-0207-151349_092825_movie_t-3.jpg", "2020-0207-151349_092825_movie_t-2.jpg", "2020-0207-151349_092825_movie_t-1.jpg", "2020-0207-151349_092825_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the truck to avoid collision", "environment_perception": "An urban arterial with three same-direction lanes is divided from oncoming traffic by a fenced median; the pavement is dry and traffic is heavy, creeping under strong sun glare. Ahead in the ego lane, a white-and-green small truck is stopped for a red light, directly holding the ego vehicle. In the lane to the right, a large dump truck edges forward slightly ahead, limiting forward visibility and merge space. On the far-right lane, a silver passenger car moves slowly alongside and then creeps past, further reducing lane-change options. Overhead gantry signs are visible in the distance.", "hazard_reasoning": "There is a white-and-green truck stopped in the ego lane, because of the red traffic lights. You should stop behind the truck to avoid collision."}
{"id": "train_05458", "split": "train", "clip_key": "titan_clip_873_000420_movie", "source": {"subset": "titan", "scenario": "clip_873", "frame": "000420"}, "frames": ["titan_clip_873_000420_movie_t-3.jpg", "titan_clip_873_000420_movie_t-2.jpg", "titan_clip_873_000420_movie_t-1.jpg", "titan_clip_873_000420_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down and watch for pedestrians", "environment_perception": "A narrow urban street without a centerline runs between buildings on smooth pavement, and traffic is light with no moving vehicles ahead. On the left edge, a group of pedestrians wearing white shirts and dark pants stands along the curb beside a parked van, many looking at their phones and leaving a tight gap in the usable lane. Farther ahead at a marked crosswalk, several pedestrians cross left to right directly in the ego path. The parked van partially blocks the left side while guardrails and trees line the right.", "hazard_reasoning": "There is a group of pedestrians wearing black pants and white shirts, standing at the left side of the road, and looking at their phones because of a parked vehicle. They may step onto the roadway unexpectedly because they are distracted, so the driver should slow down and watch for pedestrians."}
{"id": "train_05459", "split": "train", "clip_key": "2020-0226-101332_073207_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "073207"}, "frames": ["2020-0226-101332_073207_movie_t-3.jpg", "2020-0226-101332_073207_movie_t-2.jpg", "2020-0226-101332_073207_movie_t-1.jpg", "2020-0226-101332_073207_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three lanes in the ego direction and a painted median has smooth asphalt and moderate, slow-moving traffic as the scene approaches a signalized intersection showing green. A white van directly ahead in the ego lane continues straight and eases forward with the queue, controlling the pace. To the left, a small delivery scooter travels ahead along the curb lane at low speed parallel to the ego vehicle. Ahead-right, a motorcycle proceeds in the next lane and edges forward through gaps in traffic. On the immediate right, a blue truck runs alongside in the adjacent lane at similar speed. Overhead signage indicates straight movement.", "hazard_reasoning": "There are no immediate hazards detected in the scene, so the driver can proceed normally."}
{"id": "train_05460", "split": "train", "clip_key": "titan_clip_700_000228_movie", "source": {"subset": "titan", "scenario": "clip_700", "frame": "000228"}, "frames": ["titan_clip_700_000228_movie_t-3.jpg", "titan_clip_700_000228_movie_t-2.jpg", "titan_clip_700_000228_movie_t-1.jpg", "titan_clip_700_000228_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow two-way urban shopping street with edge lines and no median has smooth pavement and virtually no motor traffic, so overall flow is slow and shared with pedestrians. Ahead in the center-left of the lane, a person in a white shirt walks away from the vehicle, occupying the travel path and constraining progress. On the right side, a pedestrian wearing a white shirt and carrying a backpack walks away from the ego car along the curb, close enough to the lane to affect the vehicle's path. Shops crowd both sides and several parked bicycles and signboards protrude from the right margin, narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, walking on the right side of the road, away from the ego car. The driver should yield to the pedestrian because they are close to the travel lane and may step into the vehicle's path unexpectedly, so yielding ensures their safety."}
{"id": "train_05461", "split": "train", "clip_key": "2020-0131-135401_008868_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008868"}, "frames": ["2020-0131-135401_008868_movie_t-3.jpg", "2020-0131-135401_008868_movie_t-2.jpg", "2020-0131-135401_008868_movie_t-1.jpg", "2020-0131-135401_008868_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of construction post ahead", "environment_perception": "An urban two-way street with no median and worn but serviceable pavement narrows beside a work zone, so traffic flows slowly in the left-hand direction. The right side hosts road construction marked by orange posts and cones, with machinery and parked work trucks occupying the shoulder and partly squeezing the lane. A white box truck ahead in the ego lane proceeds cautiously past the barriers, limiting the ego vehicle's pace. On the left curb at the crosswalk, a small group of pedestrians waits and watches the roadway, poised to cross once the gap appears. On the right edge of the lane, a construction worker stands and directs vehicles around the site, maintaining a single-file passage.", "hazard_reasoning": "There is construction work and an orange construction post on the right side of the road. Drivers should be aware as the construction post could affect lane positioning and sight lines."}
{"id": "train_05462", "split": "train", "clip_key": "titan_clip_602_000060_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_602_000060_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_602_000060_movie_t-3_augB1.jpg", "titan_clip_602_000060_movie_t-2_augB1.jpg", "titan_clip_602_000060_movie_t-1_augB1.jpg", "titan_clip_602_000060_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street without a centerline runs between shops, the pavement smooth and edges partly narrowed by cones and temporary barriers; traffic is light with no moving vehicles. Ahead in the center of the lane, a pedestrian in a black shirt walks away from the ego car in the middle of the road, occupying the travel path and constraining pace. Farther ahead near the right curb, a person stands beside a bicycle and stays stationary close to the edge of the lane. A yellow school-zone warning sign appears on the left, and a roadside convex mirror is mounted on a pole at the right corner.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, walking in the middle of the road, away from the ego car. Because the pedestrian occupies the travel lane, the driver should slow down to maintain a safe distance and prevent a collision under this situation."}
{"id": "train_05463", "split": "train", "clip_key": "2020-0206-101736_071159_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-101736_071159_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-101736_071159_movie_t-3_augB1.jpg", "2020-0206-101736_071159_movie_t-2_augB1.jpg", "2020-0206-101736_071159_movie_t-1_augB1.jpg", "2020-0206-101736_071159_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "An urban two-way arterial with two lanes in the ego direction and a double solid white center line runs through mid-rise buildings; pavement is dry and smooth with moderate traffic. The ego lane's flow eases slightly. A gray truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. A small flatbed truck farther ahead in the adjacent left lane continues steadily in its lane, occupying the passing lane and limiting an immediate lane change. Oncoming vehicles move in the right-side lanes beyond the double white lines and pass without affecting the ego path. A white car is parked at the left curb near the camera but remains outside the travel lane.", "hazard_reasoning": "There is a gray truck slowing in front of the ego car, in the ego lane. The truck's sudden slowdown can quickly reduce the gap, requiring an immediate stop to avoid a rear-end collision."}
{"id": "train_05464", "split": "train", "clip_key": "2020-0220-102630_019052_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "019052"}, "frames": ["2020-0220-102630_019052_movie_t-3.jpg", "2020-0220-102630_019052_movie_t-2.jpg", "2020-0220-102630_019052_movie_t-1.jpg", "2020-0220-102630_019052_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes and no physical median is dry and smooth, and traffic is heavy with stop-and-go movement. The ego vehicle travels in the left lane. Directly ahead, a white sedan in the ego lane slows due to congestion ahead, constraining the ego's pace. To the right, a white van in the adjacent lane creeps forward beside the sedan, keeping close and limiting lane changes. Farther ahead in the same direction, a tall box truck is queued and appears stopped, reinforcing the backup. A 50 km/h speed-limit sign stands on the left roadside.", "hazard_reasoning": "There is a white sedan slowing down in front of the ego car, due to traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid collisions when traffic ahead unexpectedly reduces speed."}
{"id": "train_05465", "split": "train", "clip_key": "2020-0203-154554_036211_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_036211_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_036211_movie_t-3_augB1.jpg", "2020-0203-154554_036211_movie_t-2_augB1.jpg", "2020-0203-154554_036211_movie_t-1_augB1.jpg", "2020-0203-154554_036211_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs under an elevated expressway, with smooth pavement and right-side guardrails; traffic is moderate and briefly slows. A white coach is directly ahead in the ego lane and gradually slows because traffic congestion builds in front, constraining the ego vehicle's pace. To the right, a small white flatbed truck is just ahead in the adjacent lane and moves slowly near the guardrail, keeping roughly parallel with the bus and limiting an immediate pass. On the left, a silver car travels alongside to slightly behind the ego position in its lane and continues straight without encroaching. No signals are prominent, and visibility is shaded by the viaduct.", "hazard_reasoning": "There is a white bus slowing in front of the ego car in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a potential collision due to reduced traffic speed."}
{"id": "train_05466", "split": "train", "clip_key": "titan_clip_696_000294_movie", "source": {"subset": "titan", "scenario": "clip_696", "frame": "000294"}, "frames": ["titan_clip_696_000294_movie_t-3.jpg", "titan_clip_696_000294_movie_t-2.jpg", "titan_clip_696_000294_movie_t-1.jpg", "titan_clip_696_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with no centerline and patchy asphalt stretches ahead; traffic is light and slow. A silver kei van ahead in the same direction proceeds cautiously near the center of the lane, setting the pace. On the right side near the ego vehicle, two pedestrians walk toward the camera along the edge of the road, narrowing the passage; one is a woman wearing a black cardigan and a gray skirt, carrying a handbag. Farther ahead near the left-side buildings, another person walks away along the curb, remaining outside the travel lane. No signals or speed signs are visible, and there are no medians or dividers.", "hazard_reasoning": "There is a woman wearing a black cardigan and a gray skirt, carrying a handbag, and walking on the right side of the street, toward the ego car. The driver should carefully manoeuvre around the pedestrian to avoid collision."}
{"id": "train_05467", "split": "train", "clip_key": "2020-0127-132751_022062_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "022062"}, "frames": ["2020-0127-132751_022062_movie_t-3.jpg", "2020-0127-132751_022062_movie_t-2.jpg", "2020-0127-132751_022062_movie_t-1.jpg", "2020-0127-132751_022062_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the motorcycle", "environment_perception": "An urban multi-lane road runs straight beneath an elevated highway, with three same-direction lanes and a guardrail on the right; the asphalt is dry and worn, and traffic is moderate. At the right edge close to the camera, a black motorcycle cuts into the ego lane from the right, encroaching on the ego path. A small white hatchback ahead in the ego lane proceeds steadily, setting the pace. Farther ahead in the right lane, a dark SUV continues straight with modest separation from the ego lane.", "hazard_reasoning": "There is a black motorcycle cutting in to the ego lane from the right lane. Its unexpected cut-in can lead to a close proximity or collision if not anticipated, so the driver should be aware to maintain a safe following distance."}
{"id": "train_05468", "split": "train", "clip_key": "titan_clip_122_000240_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_122_000240_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_122_000240_movie_t-3_augB1.jpg", "titan_clip_122_000240_movie_t-2_augB1.jpg", "titan_clip_122_000240_movie_t-1_augB1.jpg", "titan_clip_122_000240_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision.", "environment_perception": "An urban commercial street with a single narrow two-way lane has no median and slightly worn asphalt, and traffic is light as the ego car moves slowly. A white kei car stands ahead at the left curb, partially intruding into the lane and constraining the ego vehicle's path. A cyclist carrying a backpack rides toward the ego along the right side of the road, approaching as oncoming traffic that may pass close by. Pedestrians line both sidewalks, and one person near the left side steps briefly into the roadway ahead, creating a minor hazard before moving away.", "hazard_reasoning": "There is a cyclist carrying a backpack, cycling toward the ego car on the right side of the road. The cyclist approaches the vehicle's path, so the driver should slow down to maintain safety."}
{"id": "train_05469", "split": "train", "clip_key": "2020-0214-145407_013497_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "013497"}, "frames": ["2020-0214-145407_013497_movie_t-3.jpg", "2020-0214-145407_013497_movie_t-2.jpg", "2020-0214-145407_013497_movie_t-1.jpg", "2020-0214-145407_013497_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane intersection with broad zebra crossings and dry, smooth pavement is visible, and traffic flows at a moderate pace. The ego vehicle approaches in left-hand traffic toward the junction. Ahead in the ego lane, a white minivan turns right in the middle of the intersection, briefly constraining the ego's path. Slightly ahead to the left, a large flatbed truck proceeds through the junction, easing toward the center as it slows with the flow. A dark hatchback ahead continues straight, threading between the truck and the turning minivan. Farther across the intersection, an oncoming box truck advances toward the junction while maintaining its line.", "hazard_reasoning": "There is a white minivan turning right in the ego lane, in the middle of the intersection. The minivan's maneuver could impede your path and requires you to adjust speed and follow carefully to maintain a safe distance."}
{"id": "train_05470", "split": "train", "clip_key": "2020-0225-145150_032268_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "032268"}, "frames": ["2020-0225-145150_032268_movie_t-3.jpg", "2020-0225-145150_032268_movie_t-2.jpg", "2020-0225-145150_032268_movie_t-1.jpg", "2020-0225-145150_032268_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road lined with mid-rise buildings passes under a pedestrian footbridge; the pavement is smooth and traffic is moderate but slow near the camera. The ego vehicle travels in a through lane bordered by a marked hatched area on the right. A blue-and-gray pickup truck is stopped directly ahead in the ego lane, blocking the path. In the adjacent lane to the left, a white mini-van ahead moves slowly alongside the blockage. Farther ahead in that same lane, a teal box truck creeps with the queue.", "hazard_reasoning": "There is a blue-and-gray pickup truck stopped in the ego lane. This stopped vehicle directly ahead in your lane poses a collision risk if you do not stop in time."}
{"id": "train_05471", "split": "train", "clip_key": "2020-0217-110854_073843_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "073843"}, "frames": ["2020-0217-110854_073843_movie_t-3.jpg", "2020-0217-110854_073843_movie_t-2.jpg", "2020-0217-110854_073843_movie_t-1.jpg", "2020-0217-110854_073843_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with multiple lanes and a painted centerline runs past shops; the asphalt is dry and traffic is moderate, queuing toward a signalized intersection where the light is red. A white light-truck directly ahead in the ego lane slows and stops for the red signal, constraining the ego car's pace. A larger covered truck is alongside on the left, also decelerating in its lane and limiting lateral room. Oncoming vehicles continue through the intersection on the far side, moving past the stopped same-direction queue.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane, because of the red traffic light. The truck's sudden deceleration at the red light requires you to stop promptly to maintain a safe following distance and avoid collision."}
{"id": "train_05472", "split": "train", "clip_key": "titan_clip_1264_000084_movie", "source": {"subset": "titan", "scenario": "clip_1264", "frame": "000084"}, "frames": ["titan_clip_1264_000084_movie_t-3.jpg", "titan_clip_1264_000084_movie_t-2.jpg", "titan_clip_1264_000084_movie_t-1.jpg", "titan_clip_1264_000084_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential street with a narrow two-way carriageway lacking a centerline is seen in dry conditions, and traffic is light with no moving vehicles; the road continues ahead with a gentle right bend past a small junction. No pedestrians or oncoming traffic appear in view, and the ego lane remains clear. Along the left curb, covered motorcycles, a trash enclosure, and several cones sit behind chains without encroaching on the roadway, while bicycles are parked under the building to the right. A convex safety mirror and a no-parking sign are mounted on the right-side pole near the junction, and no other controls or hazards are evident.", "hazard_reasoning": "No immediate hazards are detected in the travel lanes. The cones and covered vehicle do not obstruct vehicle movement, so no special driver action is required."}
{"id": "train_05473", "split": "train", "clip_key": "titan_clip_1113_000462_movie", "source": {"subset": "titan", "scenario": "clip_1113", "frame": "000462"}, "frames": ["titan_clip_1113_000462_movie_t-3.jpg", "titan_clip_1113_000462_movie_t-2.jpg", "titan_clip_1113_000462_movie_t-1.jpg", "titan_clip_1113_000462_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban shopping street with a single narrow shared lane runs between dense storefronts; the brick pavement is in good condition and there is no divider, with motor traffic effectively absent and movement slow. A pedestrian in a gray T-shirt and black pants walks ahead in the middle of the lane away from the ego vehicle, occupying the path and setting the pace. On the left near the curb, several pedestrians stand and a child with an adult edge toward the lane, potentially stepping out. On the right by the storefronts, a person walks along the edge toward the ego vehicle but keeps to the side. Sandwich boards and shop displays line both curbs, slightly narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a gray t-shirt and black pants, walking in the middle of the road, away from the ego car. The pedestrian is occupying the travel lane and could be struck if the driver does not adjust, so the driver should manoeuvre carefully around the pedestrian."}
{"id": "train_05474", "split": "train", "clip_key": "2020-0207-151349_062243_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "062243"}, "frames": ["2020-0207-151349_062243_movie_t-3.jpg", "2020-0207-151349_062243_movie_t-2.jpg", "2020-0207-151349_062243_movie_t-1.jpg", "2020-0207-151349_062243_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-end collision.", "environment_perception": "An urban multi-lane arterial with two same-direction lanes and a protected bicycle lane on the left shows smooth dark pavement and heavy stop-and-go flow. Directly ahead in the ego lane, a silver sedan is stopped because of congestion, holding the ego vehicle. In the adjacent right lane, a queue including a small white flatbed truck carrying equipment and a gray sedan is also stopped or inching forward, confining the ego vehicle and limiting lateral options. On the left sidewalk, a person waits by the railing behind the barrier, away from the carriageway.", "hazard_reasoning": "There is a silver sedan stopped in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid colliding with the halted vehicle."}
{"id": "train_05475", "split": "train", "clip_key": "titan_clip_643_000300_movie", "source": {"subset": "titan", "scenario": "clip_643", "frame": "000300"}, "frames": ["titan_clip_643_000300_movie_t-3.jpg", "titan_clip_643_000300_movie_t-2.jpg", "titan_clip_643_000300_movie_t-1.jpg", "titan_clip_643_000300_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with no median and smooth pavement carries light traffic, with parking bays along the left curb as the ego vehicle proceeds in the left lane. Ahead in the same direction, a white van continues straight and moves away, mildly constraining the ego's pace on the narrow carriageway. A pedestrian wearing a black shirt and black pants walks in the middle of the road ahead, moving away from the ego because a parked vehicle on the left obstructs the curb, and the person remains near the ego lane. Multiple parked cars line the left side, including a white hatchback close ahead, reducing space.", "hazard_reasoning": "A pedestrian wearing a black shirt with black pants is walking in the middle of the road, away from the ego car, because of the parked vehicle on the left. The pedestrian's path crosses the lane of travel, requiring the driver to reduce speed to avoid a potential collision."}
{"id": "train_05476", "split": "train", "clip_key": "titan_clip_58_000294_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_58_000294_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_58_000294_movie_t-3_augB1.jpg", "titan_clip_58_000294_movie_t-2_augB1.jpg", "titan_clip_58_000294_movie_t-1_augB1.jpg", "titan_clip_58_000294_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban neighborhood street with tightly spaced buildings has a single shared lane and no median, and the pavement is smooth and dry; there is no visible vehicular traffic, so flow is light. In the center ahead, a pedestrian in a blue shirt carrying a handbag walks away in the middle of the lane, directly in the ego vehicle's path and constraining its pace. Farther ahead near the center-left, a person with a bicycle walks along the roadway in the same direction, remaining within the travel lane and occupying space ahead. A small group of pedestrians even farther ahead near the road center also walk away along the lane, reducing the clear path forward.", "hazard_reasoning": "A pedestrian in a blue shirt and handbag is walking in the middle of the road, away from the ego car. This pedestrian's position in the middle of the lane increases collision risk if the vehicle maintains speed, so slow down to maintain control and avoid impact."}
{"id": "train_05477", "split": "train", "clip_key": "titan_clip_303_000246_movie", "source": {"subset": "titan", "scenario": "clip_303", "frame": "000246"}, "frames": ["titan_clip_303_000246_movie_t-3.jpg", "titan_clip_303_000246_movie_t-2.jpg", "titan_clip_303_000246_movie_t-1.jpg", "titan_clip_303_000246_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around parked sedan.", "environment_perception": "A narrow urban two-way street with smooth pavement and no divider runs between mid-rise buildings, and traffic is light. The ego-vehicle proceeds in the left lane typical of Japan. A small white car ahead in the same lane moves straight at low speed and loosely sets the pace. A white sedan is parked on the left side of the road near mid-distance, slightly narrowing the usable lane. Several vehicles are parked along the right curb, including a white SUV and a silver sedan recessed in driveways, but they stay outside the travel lane. No traffic signals or notable signs are visible.", "hazard_reasoning": "There is a white sedan parked on the left side of the road. The parked vehicle could obstruct the lane, so the driver should carefully manoeuvre to maintain safe clearance."}
{"id": "train_05478", "split": "train", "clip_key": "titan_clip_994_000156_movie", "source": {"subset": "titan", "scenario": "clip_994", "frame": "000156"}, "frames": ["titan_clip_994_000156_movie_t-3.jpg", "titan_clip_994_000156_movie_t-2.jpg", "titan_clip_994_000156_movie_t-1.jpg", "titan_clip_994_000156_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban shopping street with a single shared lane has no center divider and is paved with gray interlocking bricks in good condition; movement is slow with light pedestrian traffic and no vehicles visible. On the right side ahead, a pedestrian wearing a white sweater and carrying a handbag walks away from the ego car along the edge of the lane, slightly narrowing the path. Near the left storefronts, a man in a white shirt approaches the ego-vehicle at the curb while keeping to the side. Farther ahead, several pedestrians continue along the street in the same direction, loosely occupying the center. A-frame advertising boards and shop displays protrude from both sides, reducing the usable width.", "hazard_reasoning": "There is a pedestrian wearing a white sweater, carrying a handbag, and walking away from the ego car, on the right side of the road. The pedestrian could change pace or direction unexpectedly, so the driver needs to manoeuvre carefully to maintain a safe distance and avoid collision."}
{"id": "train_05479", "split": "train", "clip_key": "2020-0205-152530_005331_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "005331"}, "frames": ["2020-0205-152530_005331_movie_t-3.jpg", "2020-0205-152530_005331_movie_t-2.jpg", "2020-0205-152530_005331_movie_t-1.jpg", "2020-0205-152530_005331_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with a single yellow centerline and smooth pavement runs between mid-rise buildings, and the ego vehicle proceeds in the left lane with very light traffic and no vehicles ahead or oncoming. On the left sidewalk just ahead, three pedestrians walk beside a parking entrance, remaining on the curb but close to the lane. On the right sidewalk ahead, a bicyclist rides slowly in the same direction near the curb without moving into the travel lane. A Times parking sign marks the entrance on the left. Parked cars in a small lot on the left and bicycles at the near-left curb line the street.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05480", "split": "train", "clip_key": "2020-0129-105040_068952_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "068952"}, "frames": ["2020-0129-105040_068952_movie_t-3.jpg", "2020-0129-105040_068952_movie_t-2.jpg", "2020-0129-105040_068952_movie_t-1.jpg", "2020-0129-105040_068952_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban two-way road with one narrow lane per direction climbs gently between buildings, bordered by white guardrails; the pavement is dry and smooth, and traffic is light with no cars nearby or in the opposing lane. A woman in a white shirt cycles ahead along the left edge away from the ego car, keeping near the curb and constraining the ego vehicle's pace in the tight lane. Two pedestrians ahead on the right sidewalk walk in the same direction, remaining behind the guardrail and not entering the carriageway. No other road users or controls are salient.", "hazard_reasoning": "There is a woman wearing a white shirt and cycling on the left side of the road, away from the ego car. Carefully manoeuvre around the cyclist because she is riding close to your path and may require extra space."}
{"id": "train_05481", "split": "train", "clip_key": "2020-0226-101332_009757_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "009757"}, "frames": ["2020-0226-101332_009757_movie_t-3.jpg", "2020-0226-101332_009757_movie_t-2.jpg", "2020-0226-101332_009757_movie_t-1.jpg", "2020-0226-101332_009757_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrians crossing", "environment_perception": "An urban signalized intersection on a two-way road with a single lane each way and no median comes into view; the ego vehicle approaches in the left lane on clean pavement while cross-traffic flows moderately. Ahead at the near crosswalk, multiple pedestrians traverse the ego lane; two wearing white and pink coats walk from left to right under a red signal for vehicles and they occupy the path, keeping the approach stopped. On the cross street, a dark SUV and a white truck pass through the junction from right to left without turning toward the ego lane. A small delivery truck stands at the left curb near the corner.", "hazard_reasoning": "There are two pedestrians wearing white and pink coats walking across the crosswalk from left to right because of the red traffic light. The driver should yield to these crossing pedestrians to prevent a collision and comply with the traffic signal."}
{"id": "train_05482", "split": "train", "clip_key": "2020-0131-135401_000907_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "000907"}, "frames": ["2020-0131-135401_000907_movie_t-3.jpg", "2020-0131-135401_000907_movie_t-2.jpg", "2020-0131-135401_000907_movie_t-1.jpg", "2020-0131-135401_000907_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction and a painted centerline runs between mid-rise buildings; the pavement is dry and smooth, and flow is slow. A white box truck directly ahead in the ego lane is stopped because of congestion and holds the ego vehicle at a standstill. A cyclist farther ahead keeps to the left edge of the same lane beside the sidewalk, moving away past the queue and constrained by the truck. A couple of pedestrians walk along the left sidewalk near the truck but remain off the roadway. No signals or special signs are clearly visible.", "hazard_reasoning": "There is a white truck stopped in the ego lane in front of the ego car, because of traffic congestion. You should stop to avoid colliding with the stationary vehicle ahead."}
{"id": "train_05483", "split": "train", "clip_key": "2020-0205-103411_117751_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "117751"}, "frames": ["2020-0205-103411_117751_movie_t-3.jpg", "2020-0205-103411_117751_movie_t-2.jpg", "2020-0205-103411_117751_movie_t-1.jpg", "2020-0205-103411_117751_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban four-lane undivided road with smooth asphalt stretches ahead, with the ego car in the left lane; traffic is moderate and compressing near a crosswalk and intersection. A black sedan directly ahead in the ego lane slows because congestion builds further ahead, constraining the ego car's pace. In the adjacent right lane, a white van slightly ahead also decelerates in the same queue, reducing opportunities to pass. Along the right curb beside the ego vehicle, a white car is stopped near the crosswalk, narrowing the usable edge of the lane. Buildings and signs line both sides, and opposing traffic is visible beyond the center markings.", "hazard_reasoning": "There is a black sedan slowing down in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adapt to the reduced speed of the vehicle ahead, avoiding potential collisions."}
{"id": "train_05484", "split": "train", "clip_key": "2020-0226-140503_015113_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "015113"}, "frames": ["2020-0226-140503_015113_movie_t-3.jpg", "2020-0226-140503_015113_movie_t-2.jpg", "2020-0226-140503_015113_movie_t-1.jpg", "2020-0226-140503_015113_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped van", "environment_perception": "An urban two-way street with one lane in each direction and no median extends ahead; the pavement looks smooth and traffic is light to moderate. A white van is stopped on the left side of the road, partly in the ego lane near the curb, blocking part of the lane and constraining the ego vehicle's path. An oncoming white SUV approaches in the opposing lane and continues past the crosswalk, limiting the gap for the ego vehicle to pass the stopped van. Farther ahead in the same direction, a box truck proceeds straight at a distance without affecting the immediate scene.", "hazard_reasoning": "There is a white van stopped in the ego lane, on the left side of the road. The van blocks the travel lane, so the driver should carefully manoeuvre around it to avoid a collision."}
{"id": "train_05485", "split": "train", "clip_key": "2020-0205-152530_019550_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "019550"}, "frames": ["2020-0205-152530_019550_movie_t-3.jpg", "2020-0205-152530_019550_movie_t-2.jpg", "2020-0205-152530_019550_movie_t-1.jpg", "2020-0205-152530_019550_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane divided arterial approaches a wide signalized intersection with smooth pavement and moderate traffic; oncoming traffic runs on the far side of a low median to the right. Ahead in the ego lane a gray minivan slows and shifts into the left lane because traffic bunches ahead, briefly constraining the ego vehicle. Farther ahead in the center, a small dark car continues straight at a steady pace through the intersection, guiding the flow. To the right, a white truck in the outer same-direction lane rolls forward slowly toward the junction. On the left curb by the crosswalk, a cluster of pedestrians waits at the edge without stepping into the road.", "hazard_reasoning": "There's a gray minivan slowing down and lane changing, from the ego lane to the left lane, because of traffic congestion ahead. Slow down to maintain a safe gap as the minivan merges and prepare for stop-and-go traffic."}
{"id": "train_05486", "split": "train", "clip_key": "2020-0213-143552_042784_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "042784"}, "frames": ["2020-0213-143552_042784_movie_t-3.jpg", "2020-0213-143552_042784_movie_t-2.jpg", "2020-0213-143552_042784_movie_t-1.jpg", "2020-0213-143552_042784_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated expressway, with three same-direction lanes and a concrete wall on the right; the pavement is smooth and traffic is moderate under a green light. A white truck directly ahead in the ego lane slows down while continuing straight, setting our pace. A scooter just to the left of the truck moves ahead in the adjacent lane and passes the truck. A white van on the far left travels parallel slightly behind the ego vehicle without changing lanes.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. Slow down to maintain a safe following distance and avoid collision."}
{"id": "train_05487", "split": "train", "clip_key": "2020-0220-102630_044506_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "044506"}, "frames": ["2020-0220-102630_044506_movie_t-3.jpg", "2020-0220-102630_044506_movie_t-2.jpg", "2020-0220-102630_044506_movie_t-1.jpg", "2020-0220-102630_044506_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane roadway runs beneath an elevated structure, with the ego vehicle in the rightmost lane beside a fence and columns; the pavement is dry and intact, and traffic is heavy and mostly stopped. A white box truck directly ahead in the ego lane is stopped, blocking the path and constraining the ego car. In the adjacent left lane, a green-tarped medium truck waits slightly ahead, limiting chances to merge. The close fence and support pillars on the right leave almost no shoulder and tighten clearance.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The truck's sudden stop blocks the lane and reduces the driver's reaction time, so the driver must brake immediately to avoid a collision."}
{"id": "train_05488", "split": "train", "clip_key": "2020-0220-151845_037966_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "037966"}, "frames": ["2020-0220-151845_037966_movie_t-3.jpg", "2020-0220-151845_037966_movie_t-2.jpg", "2020-0220-151845_037966_movie_t-1.jpg", "2020-0220-151845_037966_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs under an elevated expressway, bounded by concrete side walls and columns; the pavement is dry and slightly patched, and traffic is moderate but bunching ahead. A covered medium truck directly ahead in the left ego lane slows as vehicles compress further forward, setting the ego car's pace. A dark sedan in the adjacent right lane travels alongside and then edges slightly ahead, occupying the overtaking lane near the truck. Farther ahead in that right lane, another car also slows into the forming queue. The close concrete barriers and support pillars create a narrow corridor with little shoulder.", "hazard_reasoning": "There is a red truck, slowing, in front of the ego car, in the ego lane, because of traffic congestion ahead. The slowing truck indicates congestion ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_05489", "split": "train", "clip_key": "2020-0203-114632_013509_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "013509"}, "frames": ["2020-0203-114632_013509_movie_t-3.jpg", "2020-0203-114632_013509_movie_t-2.jpg", "2020-0203-114632_013509_movie_t-1.jpg", "2020-0203-114632_013509_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van", "environment_perception": "An urban street with two same-direction lanes and no median slopes gently ahead, the pavement is smooth, and traffic is light but slows near a lane reduction marked by merge arrows. A white van is parked ahead in the ego left lane with its rear area open for unloading, blocking the lane and forcing the ego vehicle to slow and prepare to merge right. In the right lane, a white minivan proceeds past the obstruction and continues ahead, likely to merge left where the lanes narrow, influencing the ego's path selection. Pedestrians line both sidewalks, many standing near the curb on the right but remaining on the pavement behind railings. The number 30 is painted on the roadway, indicating the posted speed.", "hazard_reasoning": "There is a white van parked in the ego lane because it is being unloaded. This vehicle blocks the travel lane, requiring you to manoeuvre to avoid a collision and maintain safe traffic flow."}
{"id": "train_05490", "split": "train", "clip_key": "2020-0228-150133_002038_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "002038"}, "frames": ["2020-0228-150133_002038_movie_t-3.jpg", "2020-0228-150133_002038_movie_t-2.jpg", "2020-0228-150133_002038_movie_t-1.jpg", "2020-0228-150133_002038_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street with one lane in each direction and a painted centerline; the pavement is rough near a work zone and traffic moves slowly. A white box truck ahead in the ego lane slows to a stop as the lane narrows. In the opposite lane to the right, a white van approaches and passes near the centerline, limiting room for the ego vehicle. On the left side, construction work is underway with a worker standing beside traffic cones and a parked truck, the setup extending toward the lane. Parked vehicles line the curb on the right.", "hazard_reasoning": "There is construction work on the left side, with a worker, traffic cones, and a parked truck. The driver should carefully manoeuvre around the construction area to avoid collision with the worker, cones, or truck."}
{"id": "train_05491", "split": "train", "clip_key": "2020-0210-155354_004683_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "004683"}, "frames": ["2020-0210-155354_004683_movie_t-3.jpg", "2020-0210-155354_004683_movie_t-2.jpg", "2020-0210-155354_004683_movie_t-1.jpg", "2020-0210-155354_004683_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban commercial street with a single lane in each direction has no median and smooth pavement, and traffic moves in heavy stop-and-go queues toward a railway underpass ahead. A white hatchback is stopped directly in front of the ego vehicle in the ego lane because of congestion, holding the ego car at a standstill. A black van stands along the left curb just ahead, partially intruding into the lane and narrowing clearance. To the right ahead, a pedestrian pushes a green cart from the curb between orange cones and edges into the roadway, potentially entering the ego lane. Other pedestrians walk along both sidewalks near the curbs without entering the road. A red traffic signal is visible under the bridge, and orange cones line the right edge of the street.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_05492", "split": "train", "clip_key": "titan_clip_1057_000144_movie", "source": {"subset": "titan", "scenario": "clip_1057", "frame": "000144"}, "frames": ["titan_clip_1057_000144_movie_t-3.jpg", "titan_clip_1057_000144_movie_t-2.jpg", "titan_clip_1057_000144_movie_t-1.jpg", "titan_clip_1057_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down and watch for pedestrians", "environment_perception": "An urban street with tall buildings lines a single narrow lane with a painted shoulder and no median; the pavement looks smooth and traffic is light. A white van ahead in the ego lane proceeds slowly near the lane center, setting the pace. On the right, two pedestrians move away from the camera near the curb; one wears a black shirt and pants and walks along the road edge, which may bring him into the ego lane. Farther ahead, a small car travels in the same direction and continues away at steady speed. No salient signals or posted limits are visible.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and pants, walking on the right side of the road, away from the ego car. The pedestrian could unexpectedly step off the sidewalk into the vehicle's path, so the driver should slow down and watch for pedestrians."}
{"id": "train_05493", "split": "train", "clip_key": "titan_clip_938_000516_movie", "source": {"subset": "titan", "scenario": "clip_938", "frame": "000516"}, "frames": ["titan_clip_938_000516_movie_t-3.jpg", "titan_clip_938_000516_movie_t-2.jpg", "titan_clip_938_000516_movie_t-1.jpg", "titan_clip_938_000516_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around cyclist", "environment_perception": "An urban back street with a very narrow two-way carriageway has smooth pavement and light traffic, with buildings tight to both curbs. Ahead on the right edge, an oncoming cyclist in a white shirt and black pants rides toward the ego vehicle along the opposing side because the lane is narrow, likely passing close to the ego path. On the near right, a pedestrian walks past a vending machine at the curb and moves along the roadway, reducing clearance. A parked car protrudes from the left curb near the ego vehicle, adding to the squeeze.", "hazard_reasoning": "There's a male cyclist, wearing a white shirt and black pants, cycling on the right side of the road, toward the ego car, because it's a narrow lane. Carefully manoeuvre around the cyclist to avoid a collision in the confined space."}
{"id": "train_05494", "split": "train", "clip_key": "2020-0203-154554_079711_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "079711"}, "frames": ["2020-0203-154554_079711_movie_t-3.jpg", "2020-0203-154554_079711_movie_t-2.jpg", "2020-0203-154554_079711_movie_t-1.jpg", "2020-0203-154554_079711_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with two lanes per direction runs between mid-rise buildings and leafless trees; the asphalt is dry and the directions are separated only by paint. Traffic in the ego direction is heavy and mostly stop-and-go. Ahead in the ego lane, a white sedan is stopped because of congestion ahead, directly holding the ego vehicle. In the adjacent left lane, a dark sedan slightly ahead creeps forward alongside, limiting room for a lane change. To the right, oncoming traffic including a white van moves slowly in its nearest lane with no immediate interaction.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and prevent rear-end collisions."}
{"id": "train_05495", "split": "train", "clip_key": "titan_clip_286_000312_movie", "source": {"subset": "titan", "scenario": "clip_286", "frame": "000312"}, "frames": ["titan_clip_286_000312_movie_t-3.jpg", "titan_clip_286_000312_movie_t-2.jpg", "titan_clip_286_000312_movie_t-1.jpg", "titan_clip_286_000312_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Yield to cyclist.", "environment_perception": "An urban two-way street with one narrow lane each way runs between shops and apartments; the pavement looks smooth and traffic is light with no median. The ego car approaches a small intersection where a side street joins from the right. A cyclist wearing a blue shirt comes from the right at the corner, turns left onto the ego road, and rides away along the left edge ahead, merging into the ego lane and becoming the immediate lead road user. A person by the right storefront stands beside a bicycle on the sidewalk, waiting and not entering the roadway. A convex safety mirror is mounted at the right corner, and several cars are parked in a lot on the left.", "hazard_reasoning": "There is a cyclist wearing a blue shirt and cycling from the right side and away from the ego car, near the intersection, because they are turning the corner. The cyclist's turn could cross the vehicle's path, so the driver should yield to prevent a collision."}
{"id": "train_05496", "split": "train", "clip_key": "titan_clip_1383_000468_movie", "source": {"subset": "titan", "scenario": "clip_1383", "frame": "000468"}, "frames": ["titan_clip_1383_000468_movie_t-3.jpg", "titan_clip_1383_000468_movie_t-2.jpg", "titan_clip_1383_000468_movie_t-1.jpg", "titan_clip_1383_000468_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban two-way street lined with shops has no center divider, the pavement looks dry and worn, and traffic is light while pedestrian activity is steady. A small box truck stands ahead slightly left near the middle of the road, occupying part of the lane and reducing the available space for the ego vehicle. On the right edge close to the ego path, a pedestrian in a white T-shirt carrying blue crates walks toward the ego car and may encroach into the lane. Two more pedestrians farther ahead on the right also walk toward the ego vehicle along the curb, remaining close to the roadway. In the distance a person crosses near the truck, briefly entering the open path beside it.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, carrying blue crates, walking on the right side of the road, towards the ego car. The pedestrian's trajectory may lead them to cross the vehicle's path unexpectedly, so the driver should remain vigilant and be prepared to slow down."}
{"id": "train_05497", "split": "train", "clip_key": "2020-0129-105040_046855_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "046855"}, "frames": ["2020-0129-105040_046855_movie_t-3.jpg", "2020-0129-105040_046855_movie_t-2.jpg", "2020-0129-105040_046855_movie_t-1.jpg", "2020-0129-105040_046855_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs beneath an elevated expressway, forming a two-lane same-direction road that curves right with a close right-side guardrail and dry, smooth pavement; traffic is light. A white van drives ahead in the ego lane at steady speed and sets the pace. Another small van farther ahead in the right lane continues straight and pulls away without encroaching. A white car at the far left curb near the camera is stopped partly in the lane and could merge into the path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05498", "split": "train", "clip_key": "titan_clip_804_000540_movie", "source": {"subset": "titan", "scenario": "clip_804", "frame": "000540"}, "frames": ["titan_clip_804_000540_movie_t-3.jpg", "titan_clip_804_000540_movie_t-2.jpg", "titan_clip_804_000540_movie_t-1.jpg", "titan_clip_804_000540_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with a single narrow lane per direction and no median is shown; the pavement is smooth with noticeable sun glare, and traffic is light. A large silver box truck ahead on the left in the ego lane proceeds slowly near the curb, limiting the ego vehicle's pace. Farther ahead in the same direction, a small car continues straight. No oncoming vehicles are immediately visible in the right-hand lane. A side street opens on the right beside hedges and several parked bicycles, but nothing moves from that area.", "hazard_reasoning": "No immediate hazards detected; continue driving normally."}
{"id": "train_05499", "split": "train", "clip_key": "2020-0218-151547_000423_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "000423"}, "frames": ["2020-0218-151547_000423_movie_t-3.jpg", "2020-0218-151547_000423_movie_t-2.jpg", "2020-0218-151547_000423_movie_t-1.jpg", "2020-0218-151547_000423_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with a single lane in the ego direction curves gently right, the pavement is smooth, and a fenced planted strip lines the right; traffic is moderate and slow. A gray sedan ahead in the ego lane slows behind a short queue of same-direction cars, constraining the ego vehicle's pace. A cyclist on the left at the edge of the crosswalk rolls forward cautiously and could enter the ego path. Pedestrians gather and walk along the left sidewalk near the crosswalk, a few approaching the curb and potentially entering. A fenced roadside work or vacant area on the right borders the roadway, leaving little shoulder.", "hazard_reasoning": "There is a gray sedan slowing down in the ego lane. The sedan's reduced speed may require you to decrease your speed to maintain a safe following distance and avoid a collision."}
{"id": "train_05500", "split": "train", "clip_key": "2020-0220-102630_027521_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_027521_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_027521_movie_t-3_augB1.jpg", "2020-0220-102630_027521_movie_t-2_augB1.jpg", "2020-0220-102630_027521_movie_t-1_augB1.jpg", "2020-0220-102630_027521_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction and no median, smooth pavement, and moderate flow narrows alongside buildings. A large white box truck directly ahead in the left ego lane slows to a near stop by the curb, constraining the ego car's pace. An oncoming white van approaches in the right lane, which limits any chance to pass around the truck. Farther ahead, another oncoming truck creeps near the centerline, further tightening the gap ahead. A speed limit sign showing 50 is posted on the left.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_05501", "split": "train", "clip_key": "titan_clip_597_000054_movie", "source": {"subset": "titan", "scenario": "clip_597", "frame": "000054"}, "frames": ["titan_clip_597_000054_movie_t-3.jpg", "titan_clip_597_000054_movie_t-2.jpg", "titan_clip_597_000054_movie_t-1.jpg", "titan_clip_597_000054_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of the pedestrian", "environment_perception": "A narrow urban commercial two-way street with no median runs between storefronts; the pavement looks sound and traffic is light. Ahead on the left edge, a pedestrian in a black T-shirt walks away from the ego vehicle along the roadway margin and may enter the travel lane. Far ahead, a white car approaches in the oncoming direction near the center of the narrow road, constraining available space. On the right, two pedestrians linger and move slowly by storefronts next to several parked bicycles, staying close to the curb. A fallen shop sign and other items lie by the left curb, slightly encroaching toward the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, walking on the left side of the road, away from the ego car. The driver should be aware because the pedestrian may unexpectedly step into the lane ahead."}
{"id": "train_05502", "split": "train", "clip_key": "titan_clip_868_000222_movie", "source": {"subset": "titan", "scenario": "clip_868", "frame": "000222"}, "frames": ["titan_clip_868_000222_movie_t-3.jpg", "titan_clip_868_000222_movie_t-2.jpg", "titan_clip_868_000222_movie_t-1.jpg", "titan_clip_868_000222_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "In a dense urban commercial street, the ego car moves along a narrow single-lane roadway without a centerline; the asphalt is mostly smooth with minor cracks, and motor traffic is light while pedestrian activity is heavy. A small white van ahead in the same lane is stopped near the left side, constraining the ego vehicle's pace. On the right side, the tall pedestrian in a blue shirt and black pants walks toward the ego car along the roadway and may drift into its path. Several other pedestrians ahead near the middle of the lane also walk toward the camera, partially occupying the travel path. A woman at the near-right edge walks toward the camera very close to the curb. Shopfront displays and a parked bicycle line the left side, narrowing lateral clearance.", "hazard_reasoning": "The tall pedestrian in a blue shirt and black pants is walking on the right side of the road, towards the ego car. The driver should manoeuvre carefully to avoid a collision as the pedestrian approaches the vehicle's path."}
{"id": "train_05503", "split": "train", "clip_key": "titan_clip_300_000072_movie", "source": {"subset": "titan", "scenario": "clip_300", "frame": "000072"}, "frames": ["titan_clip_300_000072_movie_t-3.jpg", "titan_clip_300_000072_movie_t-2.jpg", "titan_clip_300_000072_movie_t-1.jpg", "titan_clip_300_000072_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "In an urban residential area, the ego vehicle proceeds along a narrow two-way road without a centerline or median, the pavement is slightly worn and traffic is light. On the right side ahead, a cyclist in a white shirt and black pants rides toward the ego along the curb because there is no bicycle lane, approaching the ego's path and likely to pass close. Parked cars and a small parking lot entrance line the left side, locally narrowing the carriageway, while utility poles and planters sit close to the right edge.", "hazard_reasoning": "There is a cyclist wearing a white shirt and black pants, on the right side of the road, cycling towards the ego car, because there is no bicycle lane. Therefore, the driver should carefully manoeuvre to maintain a safe distance from the cyclist in this narrow street."}
{"id": "train_05504", "split": "train", "clip_key": "2020-0218-103119_026151_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "026151"}, "frames": ["2020-0218-103119_026151_movie_t-3.jpg", "2020-0218-103119_026151_movie_t-2.jpg", "2020-0218-103119_026151_movie_t-1.jpg", "2020-0218-103119_026151_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with multiple lanes curves gently right, separated by a row of orange bollards; the pavement looks smooth and traffic is moderate. A white box truck ahead in the ego lane drives away along the curve, effectively setting the ego vehicle's pace. To the right, an oncoming taxi advances past the bollard divider and continues straight, remaining outside the ego lane. Farther ahead, several cars and vans travel in both directions beneath blue overhead guide signs.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The leading truck may slow or brake suddenly, limiting visibility and increasing collision risk, so you should be aware of its movements."}
{"id": "train_05505", "split": "train", "clip_key": "titan_clip_990_000570_movie", "source": {"subset": "titan", "scenario": "clip_990", "frame": "000570"}, "frames": ["titan_clip_990_000570_movie_t-3.jpg", "titan_clip_990_000570_movie_t-2.jpg", "titan_clip_990_000570_movie_t-1.jpg", "titan_clip_990_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian", "environment_perception": "A narrow urban two-way street with no median runs between mid-rise buildings, the asphalt looks smooth and traffic is light. A pedestrian with a backpack in a black T-shirt is ahead to the left, walking away from the camera while crossing toward the right and moving through the ego vehicle's path, likely to constrain its pace. Another person stands on the left sidewalk farther ahead, lingering near the curb but staying off the roadway. Planter islands and greenery jut from the right curb, slightly narrowing the carriageway in the mid-distance.", "hazard_reasoning": "There is a pedestrian carrying a backpack and wearing a black t-shirt, walking on the left side of the road, away from the ego car. The driver should be cautious because the pedestrian may change direction or step into the lane unexpectedly."}
{"id": "train_05506", "split": "train", "clip_key": "2020-0203-154554_033693_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_033693_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_033693_movie_t-3_augB1.jpg", "2020-0203-154554_033693_movie_t-2_augB1.jpg", "2020-0203-154554_033693_movie_t-1_augB1.jpg", "2020-0203-154554_033693_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane roadway runs under an elevated structure, with smooth asphalt and a right-side guardrail; traffic is moderate and slow. A white coach bus ahead in the ego lane slows because congestion builds further upstream, directly setting the ego vehicle's pace. A small flatbed kei truck travels ahead-right in the adjacent lane at a similar slow speed, holding position beside the bus and offering no clear gap. A compact white car to the left edges forward alongside the ego vehicle, limiting a leftward lane change. A sign on the right shows a 50 speed limit.", "hazard_reasoning": "There is a white bus slowing down in the ego lane because of traffic congestion ahead. The driver should slow down to maintain a safe distance as vehicles ahead are decelerating."}
{"id": "train_05507", "split": "train", "clip_key": "titan_clip_674_000324_movie", "source": {"subset": "titan", "scenario": "clip_674", "frame": "000324"}, "frames": ["titan_clip_674_000324_movie_t-3.jpg", "titan_clip_674_000324_movie_t-2.jpg", "titan_clip_674_000324_movie_t-1.jpg", "titan_clip_674_000324_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cyclist", "environment_perception": "A narrow urban residential street with buildings close to the curb forms a two-way road with no centerline, smooth pavement, and light traffic. A cyclist ahead slightly right rides toward the camera along the oncoming side and edges toward the ego lane marked by side lines, so they may encroach on the path. A car is parked in a recessed space on the right off the roadway, and utility poles and a convex mirror line the verge.", "hazard_reasoning": "There is a cyclist riding towards the ego-car on the right side of the road in the ego lane because there is a bike lane. The driver should carefully manoeuvre around the cyclist to maintain safe distance and avoid collision."}
{"id": "train_05508", "split": "train", "clip_key": "2020-0207-101955_118852_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "118852"}, "frames": ["2020-0207-101955_118852_movie_t-3.jpg", "2020-0207-101955_118852_movie_t-2.jpg", "2020-0207-101955_118852_movie_t-1.jpg", "2020-0207-101955_118852_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban three-lane arterial runs under an elevated expressway, with a shrub median on the left and a right-side barrier; the pavement is smooth and traffic builds from moderate to heavy near a signalized junction ahead. Directly ahead in the ego lane, a blue sedan slows because of traffic congestion ahead, pacing the ego vehicle. In the right lane alongside and slightly ahead, a white van followed by a white wagon inches forward in a short queue, constraining rightward lane changes. In the left lane just ahead, a black minivan proceeds at a similar reduced speed and occupies the adjacent space. A traffic signal and a line of vehicles are visible under the viaduct, explaining the slowdown.", "hazard_reasoning": "There is a blue sedan slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision with the slowed vehicle."}
{"id": "train_05509", "split": "train", "clip_key": "titan_clip_779_000102_movie", "source": {"subset": "titan", "scenario": "clip_779", "frame": "000102"}, "frames": ["titan_clip_779_000102_movie_t-3.jpg", "titan_clip_779_000102_movie_t-2.jpg", "titan_clip_779_000102_movie_t-1.jpg", "titan_clip_779_000102_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban neighborhood scene shows a narrow two-way street without a median; the pavement is smooth and traffic is light with no vehicles visible. Ahead on the left edge, a pedestrian walks toward the camera partly in the roadway, close to the ego lane and constraining pace. Slightly farther ahead on the same side, another pedestrian walks along the edge in the same direction as the vehicle, staying near the curb. A convex traffic mirror is mounted on a pole at the left corner. Buildings tightly line both sides, with planters narrowing the right margin, and the road curves slightly right ahead.", "hazard_reasoning": "There are no visible hazards in the scene, so the driver can maintain normal driving without adjustment."}
{"id": "train_05510", "split": "train", "clip_key": "titan_clip_938_000306_movie", "source": {"subset": "titan", "scenario": "clip_938", "frame": "000306"}, "frames": ["titan_clip_938_000306_movie_t-3.jpg", "titan_clip_938_000306_movie_t-2.jpg", "titan_clip_938_000306_movie_t-1.jpg", "titan_clip_938_000306_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around parked vehicle", "environment_perception": "A narrow urban street with close storefronts has a single shared carriageway without a median; the asphalt looks smooth and traffic is light. A silver sedan is parked along the left curb beside the ego lane, narrowing the available width near the camera. Ahead near the middle of the road, an oncoming cyclist rides toward the camera and encroaches on the ego lane. Farther ahead, a pedestrian crosses the roadway from left to right near the shops, briefly occupying the path the ego vehicle would follow.", "hazard_reasoning": "There is a silver sedan parked on the left side of the road. The parked vehicle reduces lane width and may obstruct the ego-vehicle's path, so the driver should manoeuvre carefully around it to prevent a collision."}
{"id": "train_05511", "split": "train", "clip_key": "2020-0225-102455_020280_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "020280"}, "frames": ["2020-0225-102455_020280_movie_t-3.jpg", "2020-0225-102455_020280_movie_t-2.jpg", "2020-0225-102455_020280_movie_t-1.jpg", "2020-0225-102455_020280_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban two-way street with one lane per direction has no median and smooth pavement, and traffic is light. Ahead in the ego lane, a gray box truck is stopped along the left curb, occupying part of the lane and constraining the ego vehicle's path. In the opposite lane, a small white van approaches from ahead and continues straight as oncoming traffic passes. Several dark vans are parked along the right curb and a car nose is visible near the camera, leaving a relatively narrow roadway.", "hazard_reasoning": "There is a gray truck stopped on the left side of the road. This stopped vehicle partially blocks the lane and limits the driver's sight lines, so the driver should carefully manoeuvre around the truck."}
{"id": "train_05512", "split": "train", "clip_key": "2020-0129-105040_100590_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "100590"}, "frames": ["2020-0129-105040_100590_movie_t-3.jpg", "2020-0129-105040_100590_movie_t-2.jpg", "2020-0129-105040_100590_movie_t-1.jpg", "2020-0129-105040_100590_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a landscaped median and smooth pavement carries moderate traffic that compresses approaching a signalized intersection. A white truck ahead in the ego lane slows for the red light and sets the pace. To its right, a small van in the adjacent lane also eases off as it nears the queue, remaining parallel to the truck. Farther ahead, a blue truck and several cars line up at the intersection in the ego's path. Overhead traffic lights show red and large direction signs span the road.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because of a red traffic light. The white truck is reducing speed unexpectedly due to the red light, requiring the driver to slow down to maintain a safe following distance."}
{"id": "train_05513", "split": "train", "clip_key": "2020-0127-132751_082653_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "082653"}, "frames": ["2020-0127-132751_082653_movie_t-3.jpg", "2020-0127-132751_082653_movie_t-2.jpg", "2020-0127-132751_082653_movie_t-1.jpg", "2020-0127-132751_082653_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes per direction and a raised concrete median extends straight on smooth pavement, with light traffic overall. A green tarp-covered truck ahead in the ego lane near the median slows, reducing the ego vehicle's speed as they approach the next intersection. A few oncoming cars move freely in the opposite lanes to the right beyond the median and pose no immediate interaction. A large 50 speed marking is painted on the ego lane, and the corridor shows blue shoulder strips along the curb.", "hazard_reasoning": "There is a green truck slowing in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should slow down to avoid running the red light and prevent a potential collision."}
{"id": "train_05514", "split": "train", "clip_key": "titan_clip_769_000336_movie", "source": {"subset": "titan", "scenario": "clip_769", "frame": "000336"}, "frames": ["titan_clip_769_000336_movie_t-3.jpg", "titan_clip_769_000336_movie_t-2.jpg", "titan_clip_769_000336_movie_t-1.jpg", "titan_clip_769_000336_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the stopped scooter ahead", "environment_perception": "An urban residential setting features a very narrow two-way road without a center line, bordered by houses, walls, and planters; the pavement looks smooth and traffic remains light throughout. Ahead on the left side of the road, a black scooter is stopped at the curb, slightly intruding into the travel way and potentially constraining the approach. No other moving vehicles or pedestrians are visible, and the straight roadway offers clear sight lines with no obvious traffic signals or signs in view.", "hazard_reasoning": "There's a black scooter stopped on the left side of the road. The scooter's stationary position could force a sudden maneuver, so the driver should slow down and prepare to steer clear."}
{"id": "train_05515", "split": "train", "clip_key": "2020-0228-150133_054153_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "054153"}, "frames": ["2020-0228-150133_054153_movie_t-3.jpg", "2020-0228-150133_054153_movie_t-2.jpg", "2020-0228-150133_054153_movie_t-1.jpg", "2020-0228-150133_054153_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs beside a hedge median; the dry pavement looks smooth and traffic is heavy, moving slowly toward a signalized intersection. A gray sedan directly ahead in the ego lane moves slowly near the traffic light, constraining the ego vehicle. In the adjacent left lane, a small white van and a dark sedan beside and ahead creep forward with the queue, preventing an easy pass. Oncoming cars beyond the median travel steadily to the right with no interaction. Overhead traffic signals hang above the junction.", "hazard_reasoning": "There is a gray sedan moving slowly ahead in the ego lane in front of the ego car, because of a green traffic light. Maintain a safe following distance to adapt to the slower speed and avoid abrupt speed changes."}
{"id": "train_05516", "split": "train", "clip_key": "2020-0226-140503_040863_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "040863"}, "frames": ["2020-0226-140503_040863_movie_t-3.jpg", "2020-0226-140503_040863_movie_t-2.jpg", "2020-0226-140503_040863_movie_t-1.jpg", "2020-0226-140503_040863_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban road with two same-direction lanes runs past buildings, the ego traveling in the left lane on wet pavement as traffic bunches ahead and moves slowly. A white van directly ahead in the ego lane slows and creeps because of congestion ahead, setting the ego car's pace. In the adjacent right lane, a small white truck farther ahead inches forward toward the same queue, remaining roughly parallel to the ego vehicle. A white sedan in the right lane draws level, then continues slowly past before queuing ahead of the truck without signaling a lane change. Orange cones line the left curb, reducing shoulder space but not blocking the lane.", "hazard_reasoning": "There is a white van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The slowing vehicle ahead signals congestion, so slow down to maintain a safe following distance."}
{"id": "train_05517", "split": "train", "clip_key": "titan_clip_625_000270_movie", "source": {"subset": "titan", "scenario": "clip_625", "frame": "000270"}, "frames": ["titan_clip_625_000270_movie_t-3.jpg", "titan_clip_625_000270_movie_t-2.jpg", "titan_clip_625_000270_movie_t-1.jpg", "titan_clip_625_000270_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "An urban multi-lane two-way street with no median and smooth pavement shows light to moderate flow in both directions. On the left edge near the ego lane, a gray van is parked with its rear doors open because it is being unloaded, narrowing the curbside space and constraining the ego vehicle's path. A person stands at the back of the van, moving between the sidewalk and the roadway and may step into the lane. Oncoming traffic in the right-side lanes, including a black sedan and a white SUV, advances steadily toward the camera in its lanes. A 40 km/h speed limit sign is posted on the left.", "hazard_reasoning": "There is a gray van parked on the left side of the road because it is being unloaded. This parked van obstructs the left lane and reduces visibility, so the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_05518", "split": "train", "clip_key": "2020-0226-140503_070050_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "070050"}, "frames": ["2020-0226-140503_070050_movie_t-3.jpg", "2020-0226-140503_070050_movie_t-2.jpg", "2020-0226-140503_070050_movie_t-1.jpg", "2020-0226-140503_070050_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the white van", "environment_perception": "The scene is an urban arterial with three same-direction lanes and a red-painted curb lane on the left; the pavement is dry and generally smooth, and traffic flows at a moderate, steady pace. A white van drives alongside the ego car in the right lane, keeping pace close by and constraining any lane change. Farther ahead in the left lane, a boxy white van continues straight at normal speed, loosely setting that lane's pace. A small white car runs ahead in the center lane at a similar speed within the ego vehicle's path. An overhead traffic signal spans the intersection ahead, and a blue circular sign on the left indicates a left turn for the curb lane.", "hazard_reasoning": "There is a white van driving alongside the ego car, in the right lane. The van could change lanes or alter its speed unexpectedly, so you should be aware of its movements."}
{"id": "train_05519", "split": "train", "clip_key": "titan_clip_1203_000210_movie", "source": {"subset": "titan", "scenario": "clip_1203", "frame": "000210"}, "frames": ["titan_clip_1203_000210_movie_t-3.jpg", "titan_clip_1203_000210_movie_t-2.jpg", "titan_clip_1203_000210_movie_t-1.jpg", "titan_clip_1203_000210_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped van", "environment_perception": "A narrow two-way urban street with one lane each way runs through a shopping district, with no median, smooth dry pavement, and light traffic throughout. A white van is stopped at the left curb ahead with its hazard lights flashing, protruding slightly into the ego lane and narrowing the passing space. Several pedestrians walk along the left sidewalk near the van and farther ahead, staying on the walkway but close to the curb. The opposite lane remains clear nearby. A large 40 speed marking is painted on the roadway. Short black bollards line both curbs, constraining lateral maneuvering around the stopped vehicle.", "hazard_reasoning": "There is a white van stopped with its hazard lights on, on the left side of the road. You should carefully manoeuvre around the van to avoid collision and maintain safe clearance."}
{"id": "train_05520", "split": "train", "clip_key": "2020-0225-145150_000270_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "000270"}, "frames": ["2020-0225-145150_000270_movie_t-3.jpg", "2020-0225-145150_000270_movie_t-2.jpg", "2020-0225-145150_000270_movie_t-1.jpg", "2020-0225-145150_000270_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with no median descends through a commercial district; pavement looks smooth and traffic is light with occasional oncoming cars in the opposite lane. A red motorcycle ahead in the ego lane travels away from the ego car at a steady pace and effectively sets the speed. A white van just ahead to the left slows and turns left into a side street, briefly encroaching on the ego lane before clearing. A bicyclist rides ahead along the right edge in the same direction near the railing within the lane margin and continues straight.", "hazard_reasoning": "There is a red motorcycle driving in the ego lane, away from the ego car. The motorcycle ahead may slow or change speed unexpectedly, so maintain a safe following distance and be prepared to adjust speed accordingly."}
{"id": "train_05521", "split": "train", "clip_key": "titan_clip_86_000318_movie", "source": {"subset": "titan", "scenario": "clip_86", "frame": "000318"}, "frames": ["titan_clip_86_000318_movie_t-3.jpg", "titan_clip_86_000318_movie_t-2.jpg", "titan_clip_86_000318_movie_t-1.jpg", "titan_clip_86_000318_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped vehicle", "environment_perception": "An urban commercial street has a single narrow through lane with curbside parking on both sides, no median, smooth pavement, and light traffic moving slowly ahead. A gray sedan is stopped on the right side ahead in front of the ego-car, partly occupying the lane and narrowing the passage. A white minivan is parked close on the left near the ego with its door open and a person standing beside it, further reducing clearance. Farther ahead a small line of cars continues straight in the same direction at low speed past the parked vehicles. Pedestrians on the right sidewalk walk along the storefronts without entering the roadway.", "hazard_reasoning": "There is a gray sedan stopped on the right side of the road in front of the ego-car. The driver must manoeuvre carefully around this stopped vehicle to maintain safe clearance and avoid collision."}
{"id": "train_05522", "split": "train", "clip_key": "2020-0210-101957_032799_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "032799"}, "frames": ["2020-0210-101957_032799_movie_t-3.jpg", "2020-0210-101957_032799_movie_t-2.jpg", "2020-0210-101957_032799_movie_t-1.jpg", "2020-0210-101957_032799_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between mid-rise buildings; the pavement is smooth and traffic is moderate with steady flow. A white light-duty truck ahead in the ego lane slows, directly in our path and constraining the ego car's pace. In the adjacent right lane, a black SUV slightly ahead proceeds straight at a steady speed, potentially passing the slowing truck. Farther right, a dark van continues straight with traffic and remains clear of the ego lane. Overhead traffic lights are visible at the next intersection, and no obstacles or work zones appear on the roadway.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, in front of the ego car. The truck's deceleration ahead could lead to a rear-end collision if the driver does not slow down promptly."}
{"id": "train_05523", "split": "train", "clip_key": "2020-0228-102841_009363_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "009363"}, "frames": ["2020-0228-102841_009363_movie_t-3.jpg", "2020-0228-102841_009363_movie_t-2.jpg", "2020-0228-102841_009363_movie_t-1.jpg", "2020-0228-102841_009363_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with one lane each way approaches a zebra crossing at an intersection; the asphalt is smooth and traffic is moderate with light oncoming flow. A white van directly ahead in the ego lane moves away at low speed toward the crosswalk, setting the ego vehicle's pace. To the right at the curb, a delivery scooter creeps from a side street and pauses beside the crosswalk, positioned to merge into the ego lane. On the left by the curb, a pedestrian walks near the crossing but stays on the sidewalk. A no-parking sign is posted on a pole to the left.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. The driver should maintain a safe following distance to react to any sudden speed changes."}
{"id": "train_05524", "split": "train", "clip_key": "2020-0205-152530_057847_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "057847"}, "frames": ["2020-0205-152530_057847_movie_t-3.jpg", "2020-0205-152530_057847_movie_t-2.jpg", "2020-0205-152530_057847_movie_t-1.jpg", "2020-0205-152530_057847_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway with two same-direction lanes runs under complex elevated flyovers, separated from a rising merge lane on the right by a guardrail; pavement looks smooth and traffic stays light to moderate. A black truck ahead in the ego lane continues straight and gradually pulls away from the camera. A second truck slightly to its right holds a steady course in the adjacent lane, remaining just ahead. On the right-side ramp, a white truck climbs toward the merge and may soon enter the main roadway. No signals or unusual signs stand out.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05525", "split": "train", "clip_key": "2020-0227-153144_016468_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "016468"}, "frames": ["2020-0227-153144_016468_movie_t-3.jpg", "2020-0227-153144_016468_movie_t-2.jpg", "2020-0227-153144_016468_movie_t-1.jpg", "2020-0227-153144_016468_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings, the pavement is smooth, and traffic is moderate with steady flow; a planted median separates oncoming traffic on the far right. A black sedan directly ahead in the ego lane moves left and begins changing into the left lane, briefly affecting the ego vehicle's path. A small white hatchback is stopped near the curb in the left lane just ahead, reducing space where vehicles merge left. Farther ahead in the right lane, a dark van proceeds straight at a similar pace and helps set the flow. A circular 50 speed-limit sign is visible on the left side of the road.", "hazard_reasoning": "There is a black sedan changing lane from the ego lane to the left lane. Slow down to maintain safe distance as the sedan merges into your lane and avoid a collision."}
{"id": "train_05526", "split": "train", "clip_key": "titan_clip_140_000474_movie", "source": {"subset": "titan", "scenario": "clip_140", "frame": "000474"}, "frames": ["titan_clip_140_000474_movie_t-3.jpg", "titan_clip_140_000474_movie_t-2.jpg", "titan_clip_140_000474_movie_t-1.jpg", "titan_clip_140_000474_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrians crossing crosswalk.", "environment_perception": "A dense urban shopping street with smooth pavement and no median is visible; the carriageway is narrow, effectively a single travel lane, and vehicle traffic is light near a zebra crossing. Three pedestrians ahead of the ego vehicle, all in black pants and one carrying an umbrella, walk across the crosswalk from the right and left sides, blocking the lane. A dark car waits just beyond the crosswalk ahead in the same lane, its pace constrained by the crossing pedestrians. Additional pedestrians stand on both sidewalks near the curbs and remain stationary.", "hazard_reasoning": "There are three pedestrians in front of the ego car, wearing black pants and one carrying an umbrella, crossing at the pedestrian crosswalk to the left and right sides of the road. The driver should stop for pedestrians crossing the crosswalk to avoid collision."}
{"id": "train_05527", "split": "train", "clip_key": "titan_clip_1208_000582_movie", "source": {"subset": "titan", "scenario": "clip_1208", "frame": "000582"}, "frames": ["titan_clip_1208_000582_movie_t-3.jpg", "titan_clip_1208_000582_movie_t-2.jpg", "titan_clip_1208_000582_movie_t-1.jpg", "titan_clip_1208_000582_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban commercial street with block paving and no lane markings approaches a small intersection; there is no median, vehicle traffic is light, and the surface appears smooth. The ego vehicle proceeds slowly on the left past loading trucks. Ahead on the left side of the intersection, a pedestrian in a pink shirt carrying a backpack is on the crosswalk, crossing rightward in front of the vehicle. A white flatbed truck sits at the left curb partly over the crosswalk, creating a partial obstruction at the corner. Farther ahead, a blue delivery truck traveling in the same direction rolls slowly near the right edge and could constrain the pace. On the right sidewalk, a person pushing a stroller and other pedestrians move near the curb close to the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a pink shirt, carrying a backpack, and crossing the street on the left side of the intersection at the crosswalk. The driver should yield because the pedestrian has right of way and is crossing ahead."}
{"id": "train_05528", "split": "train", "clip_key": "2020-0207-151349_078725_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "078725"}, "frames": ["2020-0207-151349_078725_movie_t-3.jpg", "2020-0207-151349_078725_movie_t-2.jpg", "2020-0207-151349_078725_movie_t-1.jpg", "2020-0207-151349_078725_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the stopped truck", "environment_perception": "An urban arterial runs under an elevated expressway with two same-direction lanes, a guardrail and curb on the right, and worn but intact pavement; traffic is heavy and queued at an intersection. Directly ahead in the ego lane a gray dump truck is stopped because the traffic signal ahead shows red, holding the ego vehicle. Slightly ahead in the adjacent left lane a white box truck is also stopped in the queue, limiting any lane change. A dark sedan to the left of the ego creeps forward alongside, matching the slow flow. Pedestrians are visible on the left sidewalk near the junction but remain off the roadway.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of a red traffic light. The driver needs to stop to avoid collision and obey the red signal."}
{"id": "train_05529", "split": "train", "clip_key": "2020-0131-103016_002650_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "002650"}, "frames": ["2020-0131-103016_002650_movie_t-3.jpg", "2020-0131-103016_002650_movie_t-2.jpg", "2020-0131-103016_002650_movie_t-1.jpg", "2020-0131-103016_002650_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs under an elevated expressway, with two same-direction lanes and a guardrail median separating oncoming lanes to the right; the dry pavement is smooth and shows a bicycle marking on the left, and traffic is moderate with steady flow. Ahead in the ego lane, a black car travels at a constant speed and effectively sets the pace. At the near right edge of our carriageway, a white van is stopped or creeping along the curb and may merge into the lane. On the far side of the median to the right, multiple cars approach as oncoming traffic in a continuous stream.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05530", "split": "train", "clip_key": "titan_clip_1382_000360_movie", "source": {"subset": "titan", "scenario": "clip_1382", "frame": "000360"}, "frames": ["titan_clip_1382_000360_movie_t-3.jpg", "titan_clip_1382_000360_movie_t-2.jpg", "titan_clip_1382_000360_movie_t-1.jpg", "titan_clip_1382_000360_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on right side", "environment_perception": "A dense urban shopping street with a narrow unmarked single-lane roadway runs between storefronts; the pavement is worn but intact and motor traffic is light. At the right foreground, a person moves slightly into the lane while rolling a red bicycle, briefly encroaching on the ego vehicle's path. Farther ahead on the right, a man in a white shirt and black pants carrying a backpack walks away from the ego car along the curb. Ahead toward the center-left, several pedestrians walk along and drift across the roadway, potentially entering the ego lane. Merchandise racks and stacked boxes from the left shopfront extend toward the carriageway, reducing the available space.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, carrying a backpack, and walking away from the ego car, on the right side of the road. Although he is walking away and poses no immediate threat, staying aware of his presence helps prevent sudden maneuvers if he changes direction or steps into the vehicle's path."}
{"id": "train_05531", "split": "train", "clip_key": "2020-0220-102630_069340_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "069340"}, "frames": ["2020-0220-102630_069340_movie_t-3.jpg", "2020-0220-102630_069340_movie_t-2.jpg", "2020-0220-102630_069340_movie_t-1.jpg", "2020-0220-102630_069340_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three lanes in the same direction runs between mid-rise buildings, divided from oncoming traffic by a landscaped median; the pavement is smooth and traffic flows at a moderate, steady pace. A white van ahead in the ego lane pulls away as traffic ahead moves, gradually increasing the gap to the camera car. A small blue hatchback travels ahead in the left lane at a similar speed, remaining in its lane and presenting no immediate conflict. A dark sedan is close alongside in the right lane, moving forward and briefly overlapping the ego car's position as it proceeds. Overhead blue direction signs indicate destinations for nearby districts and stations.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car, because traffic ahead is moving. The van may brake abruptly if traffic patterns change, so following its speed can help you adjust gradually and avoid a collision."}
{"id": "train_05532", "split": "train", "clip_key": "titan_clip_1174_000036_movie", "source": {"subset": "titan", "scenario": "clip_1174", "frame": "000036"}, "frames": ["titan_clip_1174_000036_movie_t-3.jpg", "titan_clip_1174_000036_movie_t-2.jpg", "titan_clip_1174_000036_movie_t-1.jpg", "titan_clip_1174_000036_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow, unmarked lane and no divider stretches ahead; the pavement is mostly smooth with patches, and traffic is very light with no vehicles. Work-zone fencing runs along the left side and green cones along the sides narrow the passage between buildings. A pedestrian in a brown suit walks away from the ego vehicle in the middle of the lane ahead, occupying the travel path and setting the pace. Farther ahead, a few pedestrians drift between the shopfronts and the roadway near the center, intermittently edging into the lane and potentially entering the ego path.", "hazard_reasoning": "There is pedestrian wearing a brown suit, walking away from the ego car, in front of the ego car. The pedestrian could unexpectedly step into the path or slow down further, so the driver should reduce speed to maintain a safe separation."}
{"id": "train_05533", "split": "train", "clip_key": "2020-0226-140503_021097_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "021097"}, "frames": ["2020-0226-140503_021097_movie_t-3.jpg", "2020-0226-140503_021097_movie_t-2.jpg", "2020-0226-140503_021097_movie_t-1.jpg", "2020-0226-140503_021097_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of pedestrian", "environment_perception": "An urban two-way road with one lane per direction approaches a crosswalk at an intersection, the red-paved surface smooth and the road climbing beyond; traffic is light. An oncoming light truck ahead slightly right creeps into the intersection angled to turn right, which may cut across the ego vehicle's path. Farther ahead beyond the junction, a small white car in the same-direction lane travels uphill away from the ego vehicle, remaining in the path beyond the intersection. At the left curb of the crosswalk, a pedestrian waits to cross from the left side of the intersection and could step into the ego lane.", "hazard_reasoning": "There is a pedestrian waiting to cross at the crosswalk from the left side of the intersection. Therefore, be cautious because the pedestrian may step onto the road, requiring you to reduce speed and be prepared to yield."}
{"id": "train_05534", "split": "train", "clip_key": "2020-0203-114632_006271_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "006271"}, "frames": ["2020-0203-114632_006271_movie_t-3.jpg", "2020-0203-114632_006271_movie_t-2.jpg", "2020-0203-114632_006271_movie_t-1.jpg", "2020-0203-114632_006271_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "An urban two-way street with one lane each direction and a solid centerline curves gently right; the pavement is smooth and traffic is light. A white van is parked ahead on the left within the ego lane for unloading, narrowing the usable lane. A bicyclist rides ahead on the far right side in the oncoming lane near the curb, continuing straight and remaining outside the ego path. A pedestrian walks along the left sidewalk near the camera, parallel to the roadway and not approaching the lane. The number 40 is painted on the opposing lane, and a few other parked vehicles along the left shoulder further reduce clearance.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego-lane, because the van is being unloaded. The driver should carefully manoeuvre around the unloading van to avoid collision and maintain traffic flow."}
{"id": "train_05535", "split": "train", "clip_key": "titan_clip_601_000168_movie", "source": {"subset": "titan", "scenario": "clip_601", "frame": "000168"}, "frames": ["titan_clip_601_000168_movie_t-3.jpg", "titan_clip_601_000168_movie_t-2.jpg", "titan_clip_601_000168_movie_t-1.jpg", "titan_clip_601_000168_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the pedestrian crossing ahead", "environment_perception": "An urban commercial street comes into view at a small T-intersection with narrow two-way lanes, no median, and smooth asphalt; traffic is light and slow. At the left edge of the intersection, a pedestrian in a white shirt and black pants carrying a handbag and an umbrella walks along the curb toward the ego vehicle because there is no sidewalk, and may step into the ego path. Far ahead in the same direction, a cyclist proceeds away down the center of the narrow street, lightly occupying the lane. A Japanese stop sign and stop line control the ego approach to the intersection. Orange cones and a caution sign mark minor works along the left curb, and several parked bicycles line the right, narrowing the entry.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a handbag and an umbrella, and walking from the left side towards the ego car at the left side of the intersection because there is no sidewalk. The driver should yield to the pedestrian to prevent a collision as they are entering the vehicle's path."}
{"id": "train_05536", "split": "train", "clip_key": "2020-0131-135401_090503_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "090503"}, "frames": ["2020-0131-135401_090503_movie_t-3.jpg", "2020-0131-135401_090503_movie_t-2.jpg", "2020-0131-135401_090503_movie_t-1.jpg", "2020-0131-135401_090503_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial carries two same-direction lanes with a dedicated right-turn bay separated by painted chevrons; the asphalt is smooth and traffic is moderate, queuing at the intersection. Directly ahead in the ego lane, a white van is stopped because the overhead signal is red, holding the ego vehicle. To the right, a small white car slows in the turn lane beside the divider, waiting for the same light and running parallel to the ego path. Farther ahead in that turn lane, a bus also waits at the junction, constraining movement on that side.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to avoid colliding with the stationary vehicle at the red light."}
{"id": "train_05537", "split": "train", "clip_key": "2020-0213-143552_025052_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "025052"}, "frames": ["2020-0213-143552_025052_movie_t-3.jpg", "2020-0213-143552_025052_movie_t-2.jpg", "2020-0213-143552_025052_movie_t-1.jpg", "2020-0213-143552_025052_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban multi-lane arterial meets a wide signalized intersection with smooth pavement and bold zebra crossings, and cross traffic is moderately heavy while the ego waits at the stop line. A black motorcycle is directly ahead in the ego lane, stopped for the red light, so the ego remains queued behind it. Cars from both left and right traverse the intersection under their green phase, occupying the junction and blocking the path ahead. Pedestrians cluster on the sidewalks near the corners, waiting to cross and remaining off the roadway.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to maintain a safe distance and obey the signal to avoid a collision."}
{"id": "train_05538", "split": "train", "clip_key": "titan_clip_295_000528_movie", "source": {"subset": "titan", "scenario": "clip_295", "frame": "000528"}, "frames": ["titan_clip_295_000528_movie_t-3.jpg", "titan_clip_295_000528_movie_t-2.jpg", "titan_clip_295_000528_movie_t-1.jpg", "titan_clip_295_000528_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian.", "environment_perception": "The scene is a narrow two-way urban residential street with no median and smooth dry pavement, and traffic is light with no moving vehicles besides the ego car. On the left edge ahead, a pedestrian wearing a white T-shirt and black shorts walks away from the ego car along the roadside, close to the building line and near the ego lane. No oncoming traffic appears and the path ahead remains mostly clear. A convex safety mirror stands on the right beside a tree-lined stone planter, and a pedestrian warning sign is posted on the left. Bicycles and materials sit in a recessed doorway on the left but stay off the carriageway.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and black shorts, walking on the left side of the road, away from the ego car. The pedestrian could enter the roadway unpredictably, so the driver should be cautious to prevent a potential collision."}
{"id": "train_05539", "split": "train", "clip_key": "titan_clip_1249_000054_movie", "source": {"subset": "titan", "scenario": "clip_1249", "frame": "000054"}, "frames": ["titan_clip_1249_000054_movie_t-3.jpg", "titan_clip_1249_000054_movie_t-2.jpg", "titan_clip_1249_000054_movie_t-1.jpg", "titan_clip_1249_000054_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully", "environment_perception": "An urban commercial street with a single narrow two-way lane curves gently right, with no median and smooth pavement; motor traffic is light. A man in a cap and white shirt rides a bicycle toward the ego vehicle along the right side of the road, approaching near the bollards and potentially entering the ego lane as the curve tightens. Farther ahead, another cyclist in the center of the lane travels away in the ego vehicle's direction, modestly constraining the possible pace. On the right sidewalk, a person with an umbrella walks close to the curb but stays outside the roadway. Black bollards line the edge and the right-hand bend creates a partial blind approach.", "hazard_reasoning": "There is a man wearing a cap and a white shirt and cycling on the right side of the road, toward the ego car. The cyclist is approaching the vehicle's trajectory and the driver should manoeuvre carefully to maintain safe clearance."}
{"id": "train_05540", "split": "train", "clip_key": "2020-0204-103442_008948_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "008948"}, "frames": ["2020-0204-103442_008948_movie_t-3.jpg", "2020-0204-103442_008948_movie_t-2.jpg", "2020-0204-103442_008948_movie_t-1.jpg", "2020-0204-103442_008948_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes runs between tall buildings, divided from oncoming traffic by a raised median with guardrail; the pavement looks smooth and overall flow is moderate but slow. A black SUV directly ahead in the ego lane is stopped, holding the ego vehicle in place. To the left, a white utility pickup travels slightly ahead in the adjacent lane, continuing straight and effectively blocking an immediate lane change left. Farther ahead to the right, a silver box truck and several cars move along in the right lane in a short queue, which could also constrain a rightward merge. No salient signals or unusual road markings are visible.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car. The driver should stop to avoid colliding with the halted vehicle ahead."}
{"id": "train_05541", "split": "train", "clip_key": "titan_clip_913_000228_movie", "source": {"subset": "titan", "scenario": "clip_913", "frame": "000228"}, "frames": ["titan_clip_913_000228_movie_t-3.jpg", "titan_clip_913_000228_movie_t-2.jpg", "titan_clip_913_000228_movie_t-1.jpg", "titan_clip_913_000228_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way road and no median is shown, the pavement smooth and dry and vehicular flow light. Directly ahead, a male pedestrian in a red shirt and black pants crosses from left to right in front of the ego vehicle, occupying the lane and constraining its pace. Slightly farther ahead, two more pedestrians also cross from the left toward the right sidewalk within the ego path. Along the left curb, a white truck is stopped with people nearby, narrowing the roadway near the crossing area.", "hazard_reasoning": "There is a male pedestrian, wearing a red shirt and black pants, crossing the street, in front of the ego car, from the left to right side. The driver should slow down to allow the pedestrian to cross safely and avoid a collision."}
{"id": "train_05542", "split": "train", "clip_key": "titan_clip_1134_000372_movie", "source": {"subset": "titan", "scenario": "clip_1134", "frame": "000372"}, "frames": ["titan_clip_1134_000372_movie_t-3.jpg", "titan_clip_1134_000372_movie_t-2.jpg", "titan_clip_1134_000372_movie_t-1.jpg", "titan_clip_1134_000372_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A tree-lined urban residential road with a single narrow lane and no centerline stretches ahead; the pavement is smooth and there are no vehicles in either direction, so traffic is light. On the right edge close to the ego lane, a pedestrian wearing a white T-shirt walks away from the car along the roadway where no sidewalk is present, occupying the shoulder and narrowing the usable lane. Ahead on the left edge, another pedestrian in light clothing also walks away near the curb within the painted edge line, remaining clear of the center. No notable signals or posted speeds are visible, and there are no parked vehicles or other obstacles.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, walking on the right side of the road, away from the ego car, because there is no sidewalk. The driver should be aware because the pedestrian is walking in the vehicle's lane and may move unpredictably into the path."}
{"id": "train_05543", "split": "train", "clip_key": "titan_clip_1375_000048_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1375_000048_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1375_000048_movie_t-3_augB1.jpg", "titan_clip_1375_000048_movie_t-2_augB1.jpg", "titan_clip_1375_000048_movie_t-1_augB1.jpg", "titan_clip_1375_000048_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "A dense urban commercial street has a single marked lane with no median, smooth pavement, and very light vehicle traffic while pedestrian activity is heavy near an upcoming intersection. A pedestrian wearing a black T-shirt and gray skirt, carrying a handbag, walks away from the ego car in the middle of the ego lane, occupying the path and constraining speed. Farther ahead, several pedestrians cross left to right on the zebra crossing, continuing through the lane and keeping the way blocked. On the right edge, two pedestrians, one with an umbrella, stand partly in the roadway near the travel lane and may enter the path. A line of people outside a restaurant crowds the left curb, narrowing space. The zebra crossing is the salient control, with no traffic signals visible.", "hazard_reasoning": "There is a pedestrian, wearing a black t-shirt and gray skirt, and carrying a handbag, walking in the middle of the ego lane, away from the ego car. The driver should carefully manoeuvre around the pedestrian because they are walking in the driving lane and could enter the vehicle's path."}
{"id": "train_05544", "split": "train", "clip_key": "titan_clip_380_000234_movie", "source": {"subset": "titan", "scenario": "clip_380", "frame": "000234"}, "frames": ["titan_clip_380_000234_movie_t-3.jpg", "titan_clip_380_000234_movie_t-2.jpg", "titan_clip_380_000234_movie_t-1.jpg", "titan_clip_380_000234_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single shared lane and no median is paved with interlocking bricks in good condition; traffic is light with no moving vehicles besides the ego car. Ahead in the center of the lane, a pedestrian in a white shirt and black pants walks away from the car, having shifted into the roadway because a vehicle is parked along the left, and this person constrains the approach. Slightly left of center ahead, another pedestrian in business attire walks forward near the lane edge beside the van and remains in the travel path. On the right, a pedestrian stays on the sidewalk walking toward the camera near the curb. A white van stands on the left, partly intruding into the lane and narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking in the middle of the road, away from the ego car, because of a parked vehicle on the left. This pedestrian walking in the roadway due to the parked vehicle could step into the vehicle's path, so the driver should slow down to avoid a collision."}
{"id": "train_05545", "split": "train", "clip_key": "2020-0203-154554_038136_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "038136"}, "frames": ["2020-0203-154554_038136_movie_t-3.jpg", "2020-0203-154554_038136_movie_t-2.jpg", "2020-0203-154554_038136_movie_t-1.jpg", "2020-0203-154554_038136_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs under an elevated roadway, with three same-direction lanes, intact pavement, and moderate steady traffic. A large white box truck ahead in the ego lane continues straight and gradually pulls away, effectively setting the ego car's pace. To the right, a white microvan slightly ahead travels in the adjacent lane at a similar speed and remains in its lane. Ahead left, another small van proceeds straight in its lane while several vehicles farther ahead move smoothly under the viaduct. Blue overhead direction signs indicate upcoming route choices, and guardrails line the right side with parked motorcycles along shopfronts on the left.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05546", "split": "train", "clip_key": "2020-0206-101736_014522_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "014522"}, "frames": ["2020-0206-101736_014522_movie_t-3.jpg", "2020-0206-101736_014522_movie_t-2.jpg", "2020-0206-101736_014522_movie_t-1.jpg", "2020-0206-101736_014522_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-lane road approaches a signalized intersection with no median and smooth pavement, and traffic is light. A white cargo truck is directly ahead in the ego lane, stopped at the limit line near the junction and constraining the ego vehicle; the caption notes it is waiting because of an oncoming vehicle in the right lane. Several pedestrians stand and walk at the crosswalk on the far side to the right, potentially entering the ego path when permitted. The overhead traffic signal facing the ego direction shows red, and a roadside sign posts 40.", "hazard_reasoning": "There is a white truck stopped near the intersection, in the ego lane, because of an oncoming vehicle in the right lane. The stopped truck may block visibility of the intersection and cross traffic, so follow the vehicle ahead to maintain a safe distance."}
{"id": "train_05547", "split": "train", "clip_key": "2020-0129-105040_016928_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "016928"}, "frames": ["2020-0129-105040_016928_movie_t-3.jpg", "2020-0129-105040_016928_movie_t-2.jpg", "2020-0129-105040_016928_movie_t-1.jpg", "2020-0129-105040_016928_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately for the red light", "environment_perception": "A dense urban arterial with at least three same-direction lanes and smooth asphalt carries heavy traffic that bunches at a signalized intersection. The overhead signals ahead show red, and the flow is stopped. Directly ahead, a white hatchback in the ego lane is stationary for the red light, constraining the ego vehicle. To the right, a silver microvan in the adjacent lane inches forward alongside but remains in its lane. In the left curb lane, another white van waits near the intersection in the same queue. Buildings and shopfronts line both sides, and no unusual hazards or oncoming traffic are visible.", "hazard_reasoning": "There is a white mid-SUV stopped in the ego lane because of the red traffic light ahead at the intersection. The stopped SUV signals halted traffic and potential collision risk if the driver does not stop promptly."}
{"id": "train_05548", "split": "train", "clip_key": "2020-0220-102630_019430_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "019430"}, "frames": ["2020-0220-102630_019430_movie_t-3.jpg", "2020-0220-102630_019430_movie_t-2.jpg", "2020-0220-102630_019430_movie_t-1.jpg", "2020-0220-102630_019430_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs between mid-rise buildings, the asphalt smooth and dry, with heavy stop-and-go traffic that begins to ease as the signal changes. A white sedan directly ahead in the ego lane starts to move as the traffic light turns green, and it dictates the ego vehicle's acceleration. A black microvan in the right adjacent lane edges forward alongside and slightly ahead, limiting any rightward merge. Farther ahead, a large box truck sits in the queue and proceeds slowly, keeping overall speeds low for vehicles in both lanes. No oncoming traffic is visible in the frame.", "hazard_reasoning": "There is a white sedan in front of the ego car in the ego lane that is starting to move, because traffic lights have just turned green. The sedan's movement indicates the signal has changed to green and traffic is resuming; the driver should start moving promptly to maintain traffic flow and avoid delay."}
{"id": "train_05549", "split": "train", "clip_key": "2020-0127-132751_038281_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "038281"}, "frames": ["2020-0127-132751_038281_movie_t-3.jpg", "2020-0127-132751_038281_movie_t-2.jpg", "2020-0127-132751_038281_movie_t-1.jpg", "2020-0127-132751_038281_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban underpass with green retaining walls carries two same-direction lanes on smooth pavement, and traffic is light to moderate moving steadily toward a low bridge. A black hatchback ahead in the left lane cruises near the lane edge and effectively sets the ego vehicle's pace. Slightly farther ahead, a white sedan in the right lane continues straight at a similar speed, occupying the adjacent lane alongside the ego path. Farther under the bridge, a small truck in the right lane proceeds straight, leading the queue beyond the underpass. Overhead directional signs sit before the bridge, and the walled section feels narrow with no oncoming traffic present within this carriageway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05550", "split": "train", "clip_key": "2020-0207-101955_018065_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "018065"}, "frames": ["2020-0207-101955_018065_movie_t-3.jpg", "2020-0207-101955_018065_movie_t-2.jpg", "2020-0207-101955_018065_movie_t-1.jpg", "2020-0207-101955_018065_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial through midrise buildings has two same-direction lanes on the left of double center lines; the dry pavement looks worn and traffic is moderate. A white covered light truck directly ahead in the ego lane slows, so the ego vehicle follows its reduced pace. In the oncoming lanes to the right, a large flatbed truck approaches steadily, remaining across the center lines. A few roadside objects and bags sit behind guardrails along the left sidewalk, and no prominent signals or speed signs are visible.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car, in the ego lane. The truck's reduced speed may require you to slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_05551", "split": "train", "clip_key": "titan_clip_411_000186_movie", "source": {"subset": "titan", "scenario": "clip_411", "frame": "000186"}, "frames": ["titan_clip_411_000186_movie_t-3.jpg", "titan_clip_411_000186_movie_t-2.jpg", "titan_clip_411_000186_movie_t-1.jpg", "titan_clip_411_000186_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down, pedestrian crossing ahead.", "environment_perception": "An urban street with mid-rise buildings, the ego vehicle approaches a small four-way intersection on a narrow single lane with no median; the block-paved surface appears smooth and traffic is light. A white van is stopped on the right curb near the camera, jutting slightly into the lane and narrowing the approach. Ahead on the cross street, a concrete mixer truck moves leftward across the intersection in front of the ego lane, momentarily taking priority. At the marked crosswalk, a man in a white shirt and black pants crosses from right to left ahead, entering the ego path and requiring yielding. A red stop sign governs the ego approach.", "hazard_reasoning": "There is a tall man wearing a white shirt and black pants, crossing the street at a pedestrian crossing, from the right side to the left side. The pedestrian is crossing at the marked crosswalk, so the driver should slow down to avoid a collision."}
{"id": "train_05552", "split": "train", "clip_key": "2020-0227-104226_037891_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "037891"}, "frames": ["2020-0227-104226_037891_movie_t-3.jpg", "2020-0227-104226_037891_movie_t-2.jpg", "2020-0227-104226_037891_movie_t-1.jpg", "2020-0227-104226_037891_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and wait for traffic to clear", "environment_perception": "An urban two-way street with one lane per direction runs past low-rise buildings, with a solid yellow centerline, smooth pavement, and light-to-moderate flow overall but a short queue in the ego lane. The ego vehicle follows closely behind a gray van directly ahead in the ego lane that is stopped because of traffic congestion ahead, temporarily holding the ego vehicle. Farther ahead in the same lane, a small truck with a green tarpaulin cover also stands still, contributing to the queue. In the opposite lane an oncoming large vehicle approaches and continues past within its lane. Sidewalks and guardrails line the left, and no pedestrians or cyclists appear.", "hazard_reasoning": "There is a gray van stopped in the ego lane because of traffic congestion ahead. The driver should stop and wait because the halted traffic prevents forward movement and may lead to a collision if not addressed."}
{"id": "train_05553", "split": "train", "clip_key": "2020-0203-154554_062649_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "062649"}, "frames": ["2020-0203-154554_062649_movie_t-3.jpg", "2020-0203-154554_062649_movie_t-2.jpg", "2020-0203-154554_062649_movie_t-1.jpg", "2020-0203-154554_062649_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane per direction curves gently left, with no physical median but a painted centerline and a diagonal hatched buffer; the pavement is dry and intact, and traffic is light to moderate with steadier flow in the opposing direction. A motorcycle ahead in the ego lane travels straight at a steady speed and remains in our path, loosely setting the pace. An oncoming black van in the right opposing lane approaches near the centerline and passes while holding its lane. A small stream of additional oncoming cars follows behind it, continuing straight. Overhead signs show a 50 speed limit and straight-ahead movement, and a pedestrian overpass spans the road while railings and parked bicycles line the sidewalks.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05554", "split": "train", "clip_key": "2020-0205-103411_075794_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "075794"}, "frames": ["2020-0205-103411_075794_movie_t-3.jpg", "2020-0205-103411_075794_movie_t-2.jpg", "2020-0205-103411_075794_movie_t-1.jpg", "2020-0205-103411_075794_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban divided road with two lanes in the ego direction runs beside a hedge median on the right, and the dry pavement looks in good condition. Traffic is heavy and stop-and-go. A gray covered truck sits directly ahead in the ego lane, stopped due to congestion ahead and holding the ego vehicle stationary. To the left, a white compact car in the adjacent lane inches forward and draws slightly ahead, leaving little space beside the truck for a lane change. On the right sidewalk behind the guardrail, a pedestrian walks along the street without approaching the roadway.", "hazard_reasoning": "There is a gray truck stopped in the ego lane, because of traffic congestion ahead. To avoid a rear-end collision in the congested queue, the driver should stop under this situation."}
{"id": "train_05555", "split": "train", "clip_key": "2020-0205-103411_097124_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "097124"}, "frames": ["2020-0205-103411_097124_movie_t-3.jpg", "2020-0205-103411_097124_movie_t-2.jpg", "2020-0205-103411_097124_movie_t-1.jpg", "2020-0205-103411_097124_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the truck", "environment_perception": "An urban multi-lane arterial with smooth pavement carries queued traffic toward a signalized intersection; the flow is heavy and slows to a stop near the light. A small white flatbed truck directly ahead in the ego lane is stopped because the signal ahead shows red, blocking the ego car's path. To the left of the ego lane, several cars, including a white hatchback and a van, wait in the parallel lane at the same light, contributing to the queue. In the adjacent right lane, a dark car farther ahead inches forward toward the junction but remains constrained by the red light. Bright sun glare is present.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of a red traffic light. You must stop behind the truck to avoid a rear-end collision and maintain a safe distance at the red light."}
{"id": "train_05556", "split": "train", "clip_key": "2020-0131-135401_088046_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "088046"}, "frames": ["2020-0131-135401_088046_movie_t-3.jpg", "2020-0131-135401_088046_movie_t-2.jpg", "2020-0131-135401_088046_movie_t-1.jpg", "2020-0131-135401_088046_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings; the pavement is dry and smooth, and traffic moves slowly due to congestion ahead. A white van directly ahead in the ego lane slows because of traffic congestion ahead, constraining the ego car's speed. A large orange truck is close on the left in the adjacent curbside lane, rolling slowly parallel and narrowing room for lane changes. Across the concrete median to the right, oncoming cars, including a silver sedan, pass steadily.", "hazard_reasoning": "There is a white van slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision under reduced traffic speeds."}
{"id": "train_05557", "split": "train", "clip_key": "2020-0228-150133_009649_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "009649"}, "frames": ["2020-0228-150133_009649_movie_t-3.jpg", "2020-0228-150133_009649_movie_t-2.jpg", "2020-0228-150133_009649_movie_t-1.jpg", "2020-0228-150133_009649_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction and a solid orange centerline runs between close buildings; the pavement appears dry and smooth, and traffic in the ego direction is queued while oncoming flow is light. Directly ahead in the ego lane a large white box truck is stopped, holding the ego-car because the traffic light ahead is red. To the left front, a dark minivan in the same direction waits near the curb as part of the queue, limiting lateral space. In the opposite lane to the right, a white van approaches slowly past the stopped traffic, continuing straight and staying clear of the ego lane. A suspended signal over the junction shows red for the ego direction.", "hazard_reasoning": "There is a white truck stopped in front of the ego-car, because of a red traffic light. The driver should stop promptly to avoid colliding with the stationary truck and obey the red signal."}
{"id": "train_05558", "split": "train", "clip_key": "2020-0131-135401_005688_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "005688"}, "frames": ["2020-0131-135401_005688_movie_t-3.jpg", "2020-0131-135401_005688_movie_t-2.jpg", "2020-0131-135401_005688_movie_t-1.jpg", "2020-0131-135401_005688_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with narrow lanes and no physical median runs between mid-rise buildings; the pavement is smooth and traffic flow is halted. The ego vehicle is in the left lane. A white box truck directly ahead in the ego lane stands still because of congestion ahead, blocking the path and controlling the ego car's speed. A pedestrian on the left sidewalk ahead walks along the curb near a side street but remains off the roadway. An overhead sign shows a 40 speed limit. Sun glare from the upper right and tight roadside railings make the scene somewhat confined.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. Driver should stop to avoid colliding with the stationary truck due to congestion."}
{"id": "train_05559", "split": "train", "clip_key": "titan_clip_1023_000318_movie", "source": {"subset": "titan", "scenario": "clip_1023", "frame": "000318"}, "frames": ["titan_clip_1023_000318_movie_t-3.jpg", "titan_clip_1023_000318_movie_t-2.jpg", "titan_clip_1023_000318_movie_t-1.jpg", "titan_clip_1023_000318_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban side street with buildings tight to the curb has a single unmarked lane and dry, smooth pavement; traffic is light with no moving vehicles ahead or oncoming as the car continues straight along the left edge. A pedestrian is ahead on the left sidewalk walking away, remaining off the roadway and posing little immediate interaction. A blue car is parked in a recessed bay on the left near the camera, not intruding into the lane but adjacent to a driveway. A parking sign is visible on the right, and a utility pole, cones, and planters sit close to the right curb, slightly constricting the margin.", "hazard_reasoning": "There are no vehicles or obstacles posing a risk, and road conditions are clear, indicating that normal driving can continue safely."}
{"id": "train_05560", "split": "train", "clip_key": "2020-0220-151845_036412_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "036412"}, "frames": ["2020-0220-151845_036412_movie_t-3.jpg", "2020-0220-151845_036412_movie_t-2.jpg", "2020-0220-151845_036412_movie_t-1.jpg", "2020-0220-151845_036412_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street under an elevated expressway carries two same-direction lanes with guardrails and smooth pavement, and traffic moves slowly in moderate congestion. A red flatbed truck directly ahead in the ego left lane slows because of a queue forming ahead, setting the ego vehicle's pace. In the adjacent right lane, a small silver hatchback runs slightly ahead at a similar slow pace, limiting a lane change. Farther ahead in the right lane, a white van also decelerates with the flow as it follows the line of vehicles.", "hazard_reasoning": "There is a red truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The red truck's reduced speed signals a buildup of traffic, so the driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_05561", "split": "train", "clip_key": "titan_clip_195_000186_movie", "source": {"subset": "titan", "scenario": "clip_195", "frame": "000186"}, "frames": ["titan_clip_195_000186_movie_t-3.jpg", "titan_clip_195_000186_movie_t-2.jpg", "titan_clip_195_000186_movie_t-1.jpg", "titan_clip_195_000186_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van", "environment_perception": "A dense urban two-way street with one narrow lane each direction and no median runs between tall buildings; the pavement looks smooth and traffic is light. A white van is parked on the left in the ego lane near the camera, partially blocking the lane and narrowing the path. Farther ahead in the same direction, a small truck moves away along the center of the lane and gently governs the pace. Several pedestrians walk along the right sidewalk near building entrances, remaining clear of the road.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane. This setup blocks the travel lane and requires the driver to carefully manoeuvre around the parked vehicle to avoid collision."}
{"id": "train_05562", "split": "train", "clip_key": "2020-0228-150133_013406_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "013406"}, "frames": ["2020-0228-150133_013406_movie_t-3.jpg", "2020-0228-150133_013406_movie_t-2.jpg", "2020-0228-150133_013406_movie_t-1.jpg", "2020-0228-150133_013406_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single lane each direction and no median runs past shops and fences; the pavement looks clean, and traffic in the left, same-direction lane is queued while the oncoming right lane is mostly free. A silver van directly ahead in the ego lane is stopped because the line of vehicles is backed up by congestion. Farther ahead in the same lane, a large city bus is stopped near a roadside stop, forming the head of the queue and constraining the ego vehicle's pace. Several vehicles are parked along the left curb beside the sidewalk, narrowing the margin but remaining outside the lane.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. You should stop to maintain a safe distance and avoid a rear-end collision due to the halted vehicle."}
{"id": "train_05563", "split": "train", "clip_key": "2020-0127-132751_103453_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "103453"}, "frames": ["2020-0127-132751_103453_movie_t-3.jpg", "2020-0127-132751_103453_movie_t-2.jpg", "2020-0127-132751_103453_movie_t-1.jpg", "2020-0127-132751_103453_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction runs past shops and apartments; pavement is dry and in good condition, divided by a solid yellow center line, and traffic is light. A silver van ahead in the ego lane slows, briefly constraining the ego vehicle's pace. An oncoming scooter approaches in the right lane near the center line but continues steadily past. Farther ahead, a few oncoming cars move smoothly in their lane. No signals or speed signs are prominent, and no obstructions appear within the ego lane.", "hazard_reasoning": "There is a silver van slowing in front of the ego car, in the ego lane. The van's reduced speed combined with the upcoming blind curve could require a rapid reaction to avoid collision, so the driver should prepare to decelerate."}
{"id": "train_05564", "split": "train", "clip_key": "2020-0204-150838_018031_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "018031"}, "frames": ["2020-0204-150838_018031_movie_t-3.jpg", "2020-0204-150838_018031_movie_t-2.jpg", "2020-0204-150838_018031_movie_t-1.jpg", "2020-0204-150838_018031_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning van", "environment_perception": "An urban multi-lane road approaches a large signalized intersection with no physical median; the pavement is smooth and traffic is moderate, bunching near the stop line. A white van ahead in the ego lane turns left in the intersection, setting our pace. A larger white van in the adjacent right lane proceeds straight through the junction and may pass us. Pedestrians wait on the left curb at the crosswalk, remaining outside the roadway.", "hazard_reasoning": "There is a white van in the ego lane, turning left in the intersection. The van's turning maneuver may cross your path, so you should be aware of it to avoid a potential collision."}
{"id": "train_05565", "split": "train", "clip_key": "titan_clip_754_000168_movie", "source": {"subset": "titan", "scenario": "clip_754", "frame": "000168"}, "frames": ["titan_clip_754_000168_movie_t-3.jpg", "titan_clip_754_000168_movie_t-2.jpg", "titan_clip_754_000168_movie_t-1.jpg", "titan_clip_754_000168_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban side street with a single narrow two-way carriageway and no centerline approaches a T-intersection; the asphalt looks sound and traffic is light with no moving vehicles. A black van is parked on the left side at the mouth of the intersection ahead of the ego-car, protruding into the lane and constricting the entry. A small blue truck stands at the right corner beyond the junction, facing left and stationary, and may enter the ego path. A stop marking precedes the junction. A restaurant signboard and several parked bicycles line the right curb, further narrowing the passage.", "hazard_reasoning": "There is a black van parked on the left side of the intersection ahead of the ego-car. The parked van obstructs part of the intersection and reduces visibility of oncoming traffic, so the driver should carefully manoeuvre around it."}
{"id": "train_05566", "split": "train", "clip_key": "2020-0210-101957_008992_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "008992"}, "frames": ["2020-0210-101957_008992_movie_t-3.jpg", "2020-0210-101957_008992_movie_t-2.jpg", "2020-0210-101957_008992_movie_t-1.jpg", "2020-0210-101957_008992_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane in each direction and a solid yellow centerline curves gently right; the pavement looks smooth and traffic is moderate with a short queue ahead. A green sedan ahead in the left ego lane slows because of congestion, setting the ego vehicle's pace. In the opposite lane to the right, a red emergency van near the curb advances slowly past, reducing lateral clearance as it approaches. An oncoming white car travels near the centerline and continues through, maintaining the opposing stream that contributes to the slowdown. A bus stop sign is visible on the right sidewalk.", "hazard_reasoning": "There is a green sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to avoid a rear-end collision and adjust to the congested conditions ahead."}
{"id": "train_05567", "split": "train", "clip_key": "2020-0227-104226_108236_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "108236"}, "frames": ["2020-0227-104226_108236_movie_t-3.jpg", "2020-0227-104226_108236_movie_t-2.jpg", "2020-0227-104226_108236_movie_t-1.jpg", "2020-0227-104226_108236_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane road with painted lane lines and smooth asphalt shows heavy, stop-and-go flow with no physical median. A white box truck directly ahead in the ego lane is stopped in congestion and blocks the path. A small pickup slightly ahead to the left in the adjacent same-direction lane waits in the queue, constraining the ego vehicle alongside the truck. A silver hatchback to the right ahead in the neighboring lane inches forward near a merge marking and may enter the ego lane. A pedestrian overpass and roadside signs are visible.", "hazard_reasoning": "There is a white truck stopped in the ego lane, because of traffic congestion, in front of ego car. The illuminated brake light and halted position signal slowing traffic ahead, so you should Stop to maintain a safe distance under these congested conditions."}
{"id": "train_05568", "split": "train", "clip_key": "2020-0228-102841_062254_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "062254"}, "frames": ["2020-0228-102841_062254_movie_t-3.jpg", "2020-0228-102841_062254_movie_t-2.jpg", "2020-0228-102841_062254_movie_t-1.jpg", "2020-0228-102841_062254_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of vehicle merging ahead", "environment_perception": "An urban divided arterial with two same-direction lanes to the left of a grassy median runs ahead on smooth pavement, with moderate, steady traffic. A black hatchback directly ahead moves from the ego lane into the left lane because there is space there, briefly constraining the ego car's pace as it merges. Farther ahead in the left lane, a white box truck continues straight and sets the flow for that lane. On the opposite carriageway beyond the median, light oncoming traffic, including a white wagon, passes without interacting with the ego vehicle.", "hazard_reasoning": "There is a black hatchback lane changing in front of the ego car, from the ego lane to the left lane, because there is space in the left lane. This maneuver may force sudden steering adjustments or speed changes, so the driver should stay alert to the hatchback's movement and be prepared to adjust speed or position."}
{"id": "train_05569", "split": "train", "clip_key": "2020-0204-150838_005485_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "005485"}, "frames": ["2020-0204-150838_005485_movie_t-3.jpg", "2020-0204-150838_005485_movie_t-2.jpg", "2020-0204-150838_005485_movie_t-1.jpg", "2020-0204-150838_005485_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road curves gently right past large office buildings, with smooth dry asphalt and no physical median, only a painted buffer separating opposing flows; traffic is light to moderate. A black taxi ahead in the ego lane continues through the bend and effectively sets the pace. Farther ahead near the left edge, a white van travels in the same direction along the curbside lane. On the right, a silver hatchback approaches in the oncoming lane through the curve but stays within its side of the buffer. A traffic signal is visible ahead at the next intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05570", "split": "train", "clip_key": "titan_clip_419_000516_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_419_000516_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_419_000516_movie_t-3_augB1.jpg", "titan_clip_419_000516_movie_t-2_augB1.jpg", "titan_clip_419_000516_movie_t-1_augB1.jpg", "titan_clip_419_000516_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "A narrow urban one-lane shared street with block-paved surface and no divider runs between buildings and trees; the pavement looks smooth and motor traffic is light while pedestrians are frequent. Ahead in the ego lane, a man wearing a striped shirt and black pants, carrying a bag and a cane, crosses slowly toward the left edge without a crosswalk, directly occupying the vehicle's path. Along the right edge near the curb, two pedestrians holding umbrellas walk toward the camera within the roadway, reducing the available space beside the ego vehicle. On the left side near the buildings, another pedestrian with an umbrella walks away along the edge while a person with a stroller stands near the curb, close to the lane.", "hazard_reasoning": "There's a man, wearing a striped shirt and black pants, and carrying a bag and a cane, crossing the street toward the left side of the road, in the ego lane, because there's no crosswalk. The pedestrian is crossing outside a crosswalk in the vehicle's path, so you must stop immediately to avoid a collision."}
{"id": "train_05571", "split": "train", "clip_key": "2020-0131-135401_006301_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "006301"}, "frames": ["2020-0131-135401_006301_movie_t-3.jpg", "2020-0131-135401_006301_movie_t-2.jpg", "2020-0131-135401_006301_movie_t-1.jpg", "2020-0131-135401_006301_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one narrow lane per direction and a painted centerline is dry and in good condition, and traffic is light. A white box truck ahead in the ego lane gradually accelerates and drives away from the camera, remaining in lane and increasing the gap. The opposite-direction lane stays clear with no oncoming vehicles. An overhead circular sign shows 40 as the posted speed. Buildings line the left and a guardrail borders the right; no parked vehicles, pedestrians, or other hazards are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05572", "split": "train", "clip_key": "titan_clip_518_000048_movie", "source": {"subset": "titan", "scenario": "clip_518", "frame": "000048"}, "frames": ["titan_clip_518_000048_movie_t-3.jpg", "titan_clip_518_000048_movie_t-2.jpg", "titan_clip_518_000048_movie_t-1.jpg", "titan_clip_518_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A compact urban shopping street with a single narrow travel lane and raised sidewalks curves slightly right; the pavement looks smooth and traffic is light with no vehicles directly ahead or oncoming. On the right side of the road, a pedestrian wearing a black top carries an umbrella and walks away from the ego vehicle near the curb, potentially edging into the lane. On the left foreground, a pedestrian stands at the curb facing the street and appears poised to step off, which could constrain the ego vehicle's pace. Farther ahead on the left, another person with an umbrella waits by the curb, yielding and not entering the roadway.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and wearing a black shirt, walking on the right side of the road, away from the ego car. The pedestrian's proximity to the roadway creates a risk of unexpected movement into the vehicle's path, so the driver should carefully manoeuvre around them to maintain safety."}
{"id": "train_05573", "split": "train", "clip_key": "2020-0220-102630_016106_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "016106"}, "frames": ["2020-0220-102630_016106_movie_t-3.jpg", "2020-0220-102630_016106_movie_t-2.jpg", "2020-0220-102630_016106_movie_t-1.jpg", "2020-0220-102630_016106_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multilane arterial with smooth asphalt curves gently right, no median, and tall buildings close to the roadway; traffic is heavy and largely stopped in queues. Directly ahead in the ego lane, a white sedan is stopped for the red traffic light ahead, holding the ego vehicle. To the right, a small flatbed truck is alongside in the adjacent lane, inching forward parallel to the ego car. Farther ahead, a tall box truck and several vans queue near the intersection, constraining overall flow. The overhead signal at the junction shows red.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, in front of the ego car, because of red traffic lights ahead. The driver should stop to avoid a rear-end collision and comply with the traffic signal."}
{"id": "train_05574", "split": "train", "clip_key": "2020-0204-103442_040111_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "040111"}, "frames": ["2020-0204-103442_040111_movie_t-3.jpg", "2020-0204-103442_040111_movie_t-2.jpg", "2020-0204-103442_040111_movie_t-1.jpg", "2020-0204-103442_040111_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs under an elevated structure, with smooth pavement and heavy, largely stationary traffic. Directly ahead in the ego lane, a white-and-red highway express bus stands still because of congestion, blocking the path. To the left, a silver box truck in the adjacent lane also remains stopped alongside the bus, limiting opportunities to merge. On the right, a blue hatchback waits in the curbside lane next to a raised divider, holding position near the ego vehicle.", "hazard_reasoning": "There is a white-and-red bus stopped in front of the ego car because of traffic congestion ahead. The bus is stationary due to congestion, requiring the driver to stop and maintain a safe distance to avoid a rear-end collision."}
{"id": "train_05575", "split": "train", "clip_key": "2020-0226-101332_042923_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "042923"}, "frames": ["2020-0226-101332_042923_movie_t-3.jpg", "2020-0226-101332_042923_movie_t-2.jpg", "2020-0226-101332_042923_movie_t-1.jpg", "2020-0226-101332_042923_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with smooth asphalt runs beneath overhead signs, separated from oncoming lanes by a metal guardrail median; traffic is heavy and queued at a signalized intersection. A white van directly ahead in the ego lane is stopped with brake lights on because the light ahead shows red, holding the ego vehicle in place. To the left, a black van alongside in the adjacent lane inches forward with the queue, limiting opportunities to merge. Farther ahead in the left lane, a white wagon is also stopped in line and keeps the pace slow. Overhead traffic signals display red as the line waits at the intersection.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of red traffic lights. You must stop to maintain a safe distance and comply with the signal under these conditions."}
{"id": "train_05576", "split": "train", "clip_key": "titan_clip_955_000066_movie", "source": {"subset": "titan", "scenario": "clip_955", "frame": "000066"}, "frames": ["titan_clip_955_000066_movie_t-3.jpg", "titan_clip_955_000066_movie_t-2.jpg", "titan_clip_955_000066_movie_t-1.jpg", "titan_clip_955_000066_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around pedestrian carefully.", "environment_perception": "A narrow two-way urban street runs between shops with no median; the pavement looks smooth and traffic is very light with no moving vehicles visible. A pedestrian in a cap and white shirt is ahead on the left, walking toward the ego-vehicle along the left edge because a handcart with stacked boxes blocks the curb, so he partly occupies the roadway and may encroach on the ego lane. Another pedestrian is farther ahead on the right near a storefront, standing and facing the ego-vehicle at the curb with little movement. Parked bicycles line the right side, one jutting into the lane, and the loaded cart on the left further narrows the passage.", "hazard_reasoning": "There is a pedestrian wearing a cap and a white shirt, and walking on the left side of the road, towards the ego-car, because of the obstacle. Driver should manoeuvre around the pedestrian carefully to avoid collision."}
{"id": "train_05577", "split": "train", "clip_key": "titan_clip_679_000228_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_679_000228_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_679_000228_movie_t-3_augB1.jpg", "titan_clip_679_000228_movie_t-2_augB1.jpg", "titan_clip_679_000228_movie_t-1_augB1.jpg", "titan_clip_679_000228_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow", "environment_perception": "An urban commercial street with a single narrow lane and no median runs ahead on smooth asphalt; traffic is very light with only pedestrians visible. Ahead in the center of the lane, a pedestrian in a white shirt and black pants walks away from the ego vehicle, remaining in its path but at a distance. On the left near the curb, a woman steps off the sidewalk and begins to cross toward the center, potentially entering the lane. Farther ahead near the right storefronts, another person walks along the curb in the same direction, staying clear. A blue-and-red prohibition sign and rows of orange cones line the street, narrowing the usable lane near shop displays.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking in front of the ego car but away from it. The pedestrian could unexpectedly veer into the vehicle's path, so the driver should slow to maintain a safe distance."}
{"id": "train_05578", "split": "train", "clip_key": "2020-0207-101955_076866_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "076866"}, "frames": ["2020-0207-101955_076866_movie_t-3.jpg", "2020-0207-101955_076866_movie_t-2.jpg", "2020-0207-101955_076866_movie_t-1.jpg", "2020-0207-101955_076866_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road enclosed by concrete sound walls runs straight in good condition, with a single through lane and a channelized taper marked by flexible posts on the right; traffic is light. A blue flatbed truck directly ahead in the ego lane slows or nearly stops while moving away, controlling the ego car's pace. No other vehicles are close in view in adjacent areas, and there is no oncoming traffic because of the median barriers. An overhead pedestrian bridge spans the roadway, and the channelized area on the right remains clear.", "hazard_reasoning": "There is a blue truck, in the ego lane, slowing or stopping, while driving away from the ego car. The truck's reduction in speed may require the driver to adjust speed promptly to avoid a rear-end collision, so the driver should slow down accordingly."}
{"id": "train_05579", "split": "train", "clip_key": "titan_clip_802_000252_movie", "source": {"subset": "titan", "scenario": "clip_802", "frame": "000252"}, "frames": ["titan_clip_802_000252_movie_t-3.jpg", "titan_clip_802_000252_movie_t-2.jpg", "titan_clip_802_000252_movie_t-1.jpg", "titan_clip_802_000252_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the cyclist", "environment_perception": "An urban two-way neighborhood street with no center divider approaches a small unsignalized intersection; the pavement is dry with strong sun glare, and traffic is light. Ahead near the junction, a pedestrian in dark clothing walks diagonally toward the left curb, crossing the ego lane and dictating a slow approach. On the right side of the intersection, a cyclist wearing a white shirt rides left to right across the cross street, momentarily passing through the ego vehicle's view and potentially entering its path. Two motorcycles are parked tight against the right curb beyond the corner, slightly narrowing the roadway edge.", "hazard_reasoning": "There is a cyclist wearing a white shirt and cycling on the right side of the intersection from the left to the right. The cyclist may enter the vehicle's path at the intersection, so the driver should manoeuvre around to avoid collision and maintain safe distance."}
{"id": "train_05580", "split": "train", "clip_key": "2020-0225-145150_000246_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-145150_000246_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-145150_000246_movie_t-3_augB1.jpg", "2020-0225-145150_000246_movie_t-2_augB1.jpg", "2020-0225-145150_000246_movie_t-1_augB1.jpg", "2020-0225-145150_000246_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "be aware of the motorcycle ahead", "environment_perception": "An urban two-way street with a single lane per direction runs past shops and sidewalks, with a fresh zebra crossing and no median; pavement looks dry and traffic is light to moderate. A white van ahead slightly left turns left into a side street just past the crosswalk, momentarily occupying and then clearing the ego lane. A black motorcycle moves forward in front of the ego car in the ego lane as traffic flows, effectively setting the pace. Several pedestrians on the right sidewalk walk near the corner and pause by the curb at the crosswalk, so they may step into the roadway. An overhead signal and a bus stop sign are visible at the intersection.", "hazard_reasoning": "There is a black motorcycle moving forward in front of the ego car in the ego lane, because traffic is flowing. Stay alert as the motorcycle may slow or brake suddenly, requiring prompt reaction aligned with the warning content."}
{"id": "train_05581", "split": "train", "clip_key": "2020-0204-150838_000567_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "000567"}, "frames": ["2020-0204-150838_000567_movie_t-3.jpg", "2020-0204-150838_000567_movie_t-2.jpg", "2020-0204-150838_000567_movie_t-1.jpg", "2020-0204-150838_000567_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of merging minivan", "environment_perception": "An urban multi-lane street with smooth asphalt and no median shows light to moderate same-direction traffic, and a work zone with cones and a keep-left sign narrows space along the right; parked vans line the curb. Ahead, a black minivan in the left lane cuts into the ego lane, merging right and taking the gap so the ego vehicle follows its pace. Farther ahead in the ego lane, a white sedan proceeds steadily toward the next block and sets the flow. On the right, a row of slow or stopped cars beside the cones limits usable width near the curb. Two pedestrians stand on the left sidewalk near storefronts but do not enter the roadway.", "hazard_reasoning": "There is a black minivan cutting in to the ego lane from the left lane. The driver should be aware of the minivan's merge as it may enter the ego lane unexpectedly and require evasive action."}
{"id": "train_05582", "split": "train", "clip_key": "titan_clip_1211_000516_movie", "source": {"subset": "titan", "scenario": "clip_1211", "frame": "000516"}, "frames": ["titan_clip_1211_000516_movie_t-3.jpg", "titan_clip_1211_000516_movie_t-2.jpg", "titan_clip_1211_000516_movie_t-1.jpg", "titan_clip_1211_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way carriageway paved in stone tiles has no median and no moving vehicles, so traffic is light. Ahead on the left, a lady in a white T-shirt and black dress walks away from the ego car along the lane edge, occupying part of the path. Farther ahead in the middle of the roadway, two pedestrians also walk away toward the distant intersection and effectively set the forward pace. On the right edge near the buildings, a man stands beside an orange cone and remains stationary close to the travel way. Storefronts line both sides and the scene stays pedestrian-dominated throughout.", "hazard_reasoning": "There is a lady, wearing a white t-shirt and black dress, walking, on the left side of the road, away from the ego car. The pedestrian could change direction into the vehicle's path, so the driver should slow down to maintain a safe distance."}
{"id": "train_05583", "split": "train", "clip_key": "2020-0227-104226_077887_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "077887"}, "frames": ["2020-0227-104226_077887_movie_t-3.jpg", "2020-0227-104226_077887_movie_t-2.jpg", "2020-0227-104226_077887_movie_t-1.jpg", "2020-0227-104226_077887_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential street in Japan, narrow two-way with no median, curves gently right; the pavement is smooth and traffic is light. Metal railings line the right edge as buildings and utility poles closely flank the roadway. A white van is stationary on the left shoulder ahead, protruding slightly into the travel lane and reducing available width. Far ahead a boxy truck moves toward the camera in the oncoming lane along the curve, relevant because it approaches the narrowed segment. A roadside convex mirror on the right aids visibility at the bend, and no traffic signals are visible.", "hazard_reasoning": "No caption provided. No immediate hazards detected, but remain attentive for any changes in the environment."}
{"id": "train_05584", "split": "train", "clip_key": "2020-0225-102455_016531_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "016531"}, "frames": ["2020-0225-102455_016531_movie_t-3.jpg", "2020-0225-102455_016531_movie_t-2.jpg", "2020-0225-102455_016531_movie_t-1.jpg", "2020-0225-102455_016531_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with two same-direction lanes on the left and oncoming lanes to the right approaches a wide signalized intersection; the pavement is dry and traffic is light. A white box truck directly ahead in the ego lane moves away through the intersection on a green light, setting the pace. Several pedestrians wait at the near-side corners by the crosswalks on both sides, standing at the curb and not entering the lane. The oncoming side to the right remains clear near the junction. Construction scaffolding lines the right sidewalk but stays off the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because of green traffic lights. The green signal may change soon, so the driver should follow the truck while maintaining a safe distance to avoid sudden stops."}
{"id": "train_05585", "split": "train", "clip_key": "titan_clip_962_000318_movie", "source": {"subset": "titan", "scenario": "clip_962", "frame": "000318"}, "frames": ["titan_clip_962_000318_movie_t-3.jpg", "titan_clip_962_000318_movie_t-2.jpg", "titan_clip_962_000318_movie_t-1.jpg", "titan_clip_962_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban street with cobblestone pavement and no centerline runs between buildings, and traffic is light with the lane partly narrowed by roadside activity. On the right ahead, a pedestrian walks away from the ego vehicle along the roadway edge, occupying the near side of the lane and effectively setting the pace. On the left midrange, another pedestrian stands by the curb beside a vehicle and remains stationary, posing little immediate interaction. A service truck is parked on the left with its rear hatch open and several orange cones around it, and additional cones appear on the right, further tightening the usable lane.", "hazard_reasoning": "There is a pedestrian walking on the right side of the road, away from the ego car. The driver should be aware of the pedestrian's position to maintain safe clearance and avoid a collision when passing through the narrowed lane."}
{"id": "train_05586", "split": "train", "clip_key": "2020-0212-102546_014625_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "014625"}, "frames": ["2020-0212-102546_014625_movie_t-3.jpg", "2020-0212-102546_014625_movie_t-2.jpg", "2020-0212-102546_014625_movie_t-1.jpg", "2020-0212-102546_014625_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road climbs gently, with the ego-vehicle in the left lane of a two-lane same-direction carriageway separated from oncoming lanes by a white guardrail. The pavement appears worn and ribbed, and traffic is light. A silver microvan is parked on the left curb just ahead, protruding slightly into the ego lane and narrowing the path. On the separated oncoming side to the right, a green bus and several cars pass by, remaining isolated by the barrier. Far ahead up the hill, a few same-direction cars proceed steadily, leaving ample gap in front. A roadside bus stop sign is visible on the left.", "hazard_reasoning": "No hazards are detected in the scene, as the parked vehicles and road signs do not obstruct the driving path; the driver can continue at a moderate speed under normal conditions."}
{"id": "train_05587", "split": "train", "clip_key": "titan_clip_1247_000390_movie", "source": {"subset": "titan", "scenario": "clip_1247", "frame": "000390"}, "frames": ["titan_clip_1247_000390_movie_t-3.jpg", "titan_clip_1247_000390_movie_t-2.jpg", "titan_clip_1247_000390_movie_t-1.jpg", "titan_clip_1247_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with a single lane runs between shopfronts, with no median and mostly smooth pavement; traffic is very light with no moving vehicles. On the right side ahead, a pedestrian wearing a cap pushes a trolley toward the ego vehicle, moving along the curb and potentially edging into the lane. Numerous parked bicycles and a motorcycle line both curbs, some protruding into the roadway and narrowing the passage. No conspicuous traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a cap, pushing a trolley along the right side of the road, toward from the ego car. The pedestrian is moving into the vehicle's path, so the driver should slow down to avoid a potential collision."}
{"id": "train_05588", "split": "train", "clip_key": "titan_clip_885_000180_movie", "source": {"subset": "titan", "scenario": "clip_885", "frame": "000180"}, "frames": ["titan_clip_885_000180_movie_t-3.jpg", "titan_clip_885_000180_movie_t-2.jpg", "titan_clip_885_000180_movie_t-1.jpg", "titan_clip_885_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with no centerline runs between tall buildings; the pavement is clean and dry, and traffic is light with only the ego car moving. Parked vehicles line both curbs, including a dark van on the right that narrows the lane. Ahead on the right, two pedestrians walk away from the ego vehicle along the roadway; one wears a white shirt and black pants and stays to the right side because the parked vehicle occupies the curb, and they could drift toward the ego lane. No signals or other controls are salient.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and walking on the right side of the road, away from the ego car, because of the parked vehicle. The pedestrian may step into the path of the vehicle due to limited sidewalk space, so the driver should slow down to avoid a potential collision."}
{"id": "train_05589", "split": "train", "clip_key": "2020-0203-154554_028185_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "028185"}, "frames": ["2020-0203-154554_028185_movie_t-3.jpg", "2020-0203-154554_028185_movie_t-2.jpg", "2020-0203-154554_028185_movie_t-1.jpg", "2020-0203-154554_028185_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with stopped vehicle.", "environment_perception": "An urban multilane arterial beneath tall buildings and an elevated expressway shows smooth pavement with heavy, mostly stationary traffic. Directly ahead in the ego lane a large flatbed truck with rear ramps is stopped because of congestion, holding the ego vehicle. In the adjacent left lane a white box van and a larger truck wait alongside at close range, matching the standstill. In the right lane a small white van sits slightly ahead, also queued and remaining in its lane.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid rear-ending the stopped vehicle."}
{"id": "train_05590", "split": "train", "clip_key": "2020-0228-102841_039540_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "039540"}, "frames": ["2020-0228-102841_039540_movie_t-3.jpg", "2020-0228-102841_039540_movie_t-2.jpg", "2020-0228-102841_039540_movie_t-1.jpg", "2020-0228-102841_039540_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with stopped van", "environment_perception": "An urban multi-lane arterial with smooth asphalt passes between tall buildings, with lanes divided by yellow lines and no median visible; traffic in the ego direction is heavy and largely stopped. A white vehicle directly ahead in the ego lane is stationary due to congestion, blocking the ego car's path. Along the left curb, a motor scooter filters forward past the queue and may cut in ahead. In the adjacent right lane, a white van slightly ahead slows to a stop alongside the line of cars. An overhead traffic signal shows a red light.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid collision with the stopped van in the lane."}
{"id": "train_05591", "split": "train", "clip_key": "2020-0127-132751_096762_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "096762"}, "frames": ["2020-0127-132751_096762_movie_t-3.jpg", "2020-0127-132751_096762_movie_t-2.jpg", "2020-0127-132751_096762_movie_t-1.jpg", "2020-0127-132751_096762_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop.", "environment_perception": "An urban two-way street with multiple lanes and no median runs past shops, the asphalt smooth, and traffic is moderate with a short queue at a signal. A silver van is stopped directly ahead in the ego lane because the traffic light ahead shows red, so the ego vehicle waits behind it. A cyclist rides along the left edge just ahead, moving slowly toward the intersection beside the queue and possibly nearing the ego lane. On the right, oncoming cars, including a dark van near the curb, proceed through their lanes without interacting. The overhead signal remains red at the junction.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because of the red traffic light. You should stop now to maintain a safe following distance and avoid a rear-end collision under this situation."}
{"id": "train_05592", "split": "train", "clip_key": "2020-0225-102455_016667_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "016667"}, "frames": ["2020-0225-102455_016667_movie_t-3.jpg", "2020-0225-102455_016667_movie_t-2.jpg", "2020-0225-102455_016667_movie_t-1.jpg", "2020-0225-102455_016667_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane each direction climbs gently between mid-rise buildings, divided by double white lines on dry, slightly worn pavement, and traffic is light with no nearby oncoming flow. A white box truck drives ahead in the ego lane moving away, and the ego car follows at its pace. A white minivan and several other vehicles are parked along the right curb, with additional parked vans on the left, but the travel lanes remain clear. No prominent signals or regulatory signs are visible, and no pedestrians enter the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. You should be aware of the truck ahead because it may change speed or brake unexpectedly, affecting your safe following distance."}
{"id": "train_05593", "split": "train", "clip_key": "2020-0228-102841_027290_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "027290"}, "frames": ["2020-0228-102841_027290_movie_t-3.jpg", "2020-0228-102841_027290_movie_t-2.jpg", "2020-0228-102841_027290_movie_t-1.jpg", "2020-0228-102841_027290_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-lane one-way road curves right between midrise buildings, with smooth pavement and light to moderate traffic. Ahead in the left lane near the curb, a gray van is parked, occupying part of the lane and creating a local obstruction. A silver minivan just ahead slightly left moves slowly in that lane as it approaches the obstruction, constraining the ego vehicle's pace. Farther ahead in the right lane, a pink microvan continues along the curve at steady speed in the same direction and remains in the ego lane's path.", "hazard_reasoning": "There is a gray van parked in the left lane. The stopped vehicle blocks the travel lane and may force an unexpected lane change, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_05594", "split": "train", "clip_key": "2020-0129-105040_100221_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "100221"}, "frames": ["2020-0129-105040_100221_movie_t-3.jpg", "2020-0129-105040_100221_movie_t-2.jpg", "2020-0129-105040_100221_movie_t-1.jpg", "2020-0129-105040_100221_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the merging van", "environment_perception": "An urban divided arterial with a central hedge median and smooth asphalt appears in daylight, with one through lane in the ego direction and a short left-side auxiliary lane; traffic is light to moderate and moves steadily. A white mini-van travels directly ahead in the ego lane at a constant pace, constraining the ego vehicle. Slightly ahead to the left, a silver van in the ending auxiliary lane drifts right to cut into the ego lane, reducing the available gap and becoming immediately relevant. Farther ahead, another white van continues straight in the same direction. Overhead blue guide signs span the road, and shops with a fuel station line the street; metal railings and the shrub median border the carriageway.", "hazard_reasoning": "There is a silver van in the left lane, cutting in to the ego lane, because of construction. The van's unexpected merge into the ego lane could force sudden evasive action or braking by the driver, so caution is necessary to maintain a safe buffer."}
{"id": "train_05595", "split": "train", "clip_key": "titan_clip_500_000636_movie", "source": {"subset": "titan", "scenario": "clip_500", "frame": "000636"}, "frames": ["titan_clip_500_000636_movie_t-3.jpg", "titan_clip_500_000636_movie_t-2.jpg", "titan_clip_500_000636_movie_t-1.jpg", "titan_clip_500_000636_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "be aware of parked truck", "environment_perception": "An urban backstreet with no centerline and rough, patchy pavement runs between mid-rise buildings; traffic is light and the usable lane narrows due to roadside parking. Ahead on the left, a white flatbed truck is parked with its hazard lights on, encroaching into the travel path and constraining the ego vehicle's pace. Slightly farther ahead on the same side, another small work truck remains stationary, further pinching the lane. To the immediate right, a silver van is parked beside orange cones, tightening the corridor and leaving only a narrow passage forward. No traffic signals or moving vehicles are evident.", "hazard_reasoning": "There is white truck parked on the left side of the road, with its hazard lights on. The stopped truck may obstruct your sight of oncoming vehicles or pedestrians, so you should stay alert to its presence."}
{"id": "train_05596", "split": "train", "clip_key": "2020-0203-154554_030227_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "030227"}, "frames": ["2020-0203-154554_030227_movie_t-3.jpg", "2020-0203-154554_030227_movie_t-2.jpg", "2020-0203-154554_030227_movie_t-1.jpg", "2020-0203-154554_030227_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs beneath an elevated expressway, the pavement is smooth, and traffic is moderate with steady same-direction flow. Ahead slightly left, a silver van cuts into the ego lane from the left lane and moves in directly ahead, reducing the headway. Farther ahead in the ego lane, a small flatbed truck proceeds at a lower speed, limiting the lane's pace. To the right, a white boxy van travels forward in the adjacent lane without drifting toward the ego lane. Blue overhead directional signs are visible above.", "hazard_reasoning": "A silver van is cutting in to the ego lane from the left lane. This merging vehicle may encroach on your path and require you to reduce speed to avoid a collision, so you should slow down."}
{"id": "train_05597", "split": "train", "clip_key": "2020-0207-101955_063640_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "063640"}, "frames": ["2020-0207-101955_063640_movie_t-3.jpg", "2020-0207-101955_063640_movie_t-2.jpg", "2020-0207-101955_063640_movie_t-1.jpg", "2020-0207-101955_063640_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two same-direction lanes runs between mid-rise buildings, separated from oncoming traffic by a raised median; the pavement is clean and traffic in our direction is heavy with a standstill queue. A white hatchback directly ahead in the ego lane is stopped because of congestion and blocks our path. Farther ahead in the same lane, a tall box truck creeps forward, setting the slow pace. In the left adjacent lane, a blue work truck and other vehicles are also stopped alongside, limiting any chance to merge. Vehicles on the opposite carriageway move steadily past. Overhead lane signs indicate straight travel with a right-turn option at the upcoming intersection.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane because of traffic congestion ahead. The hatchback is stationary in the lane, requiring the driver to stop to avoid a rear-end collision."}
{"id": "train_05598", "split": "train", "clip_key": "2020-0220-102630_071561_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "071561"}, "frames": ["2020-0220-102630_071561_movie_t-3.jpg", "2020-0220-102630_071561_movie_t-2.jpg", "2020-0220-102630_071561_movie_t-1.jpg", "2020-0220-102630_071561_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs between mid-rise buildings with no physical median visible; the asphalt looks smooth and traffic is heavy and slow. Directly ahead in the ego lane, a white van is stopped due to congestion ahead, blocking the path and setting the pace. To the right, a black MPV in the adjacent lane creeps forward parallel to the ego vehicle, inching through the queue. On the left, a small silver van also moves slowly in its lane, keeping close to surrounding vehicles. No salient traffic signals or unusual signage are visible.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the halted vehicle."}
{"id": "train_05599", "split": "train", "clip_key": "2020-0227-153144_013130_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "013130"}, "frames": ["2020-0227-153144_013130_movie_t-3.jpg", "2020-0227-153144_013130_movie_t-2.jpg", "2020-0227-153144_013130_movie_t-1.jpg", "2020-0227-153144_013130_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red traffic light.", "environment_perception": "An urban multi-lane arterial with two same-direction lanes bends slightly left, with smooth dry pavement and light to moderate flow that is momentarily queued at an intersection. A black van directly ahead in the ego lane is stopped at a red light, holding the ego car. In the adjacent right lane a white van slightly ahead is also stopped, aligned to continue straight when the signal changes. On the left sidewalk a cyclist rides toward the junction parallel to traffic, remaining on the path and away from the lane. Overhead traffic signals facing the ego direction display red at the approach to the intersection.", "hazard_reasoning": "There is a black van stopped in front of the ego car, because of a red traffic light. The driver should stop to comply with the traffic signal and avoid a collision with the halted vehicle ahead."}
{"id": "train_05600", "split": "train", "clip_key": "2020-0205-152530_002566_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "002566"}, "frames": ["2020-0205-152530_002566_movie_t-3.jpg", "2020-0205-152530_002566_movie_t-2.jpg", "2020-0205-152530_002566_movie_t-1.jpg", "2020-0205-152530_002566_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban two-lane road with a solid yellow centerline and smooth pavement runs between buildings and a fence, with light opposing traffic. Ahead in the ego lane, a white van is parked tight to the left curb, obstructing the path and requiring a pass once clear. In the opposite lane, two white vans approach at moderate speed, temporarily limiting room to maneuver around the parked vehicle. A pedestrian walks along the right sidewalk behind a guardrail, remaining outside the roadway.", "hazard_reasoning": "There is a white van parked in the ego lane. Because the van obstructs the travel lane, the driver should carefully manoeuvre around it to avoid a collision."}
{"id": "train_05601", "split": "train", "clip_key": "2020-0220-102630_072987_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "072987"}, "frames": ["2020-0220-102630_072987_movie_t-3.jpg", "2020-0220-102630_072987_movie_t-2.jpg", "2020-0220-102630_072987_movie_t-1.jpg", "2020-0220-102630_072987_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes and a concrete median runs uphill toward an elevated section; the pavement is dry and traffic is moderate. A white van ahead in the ego lane moves steadily up the grade in the ego path and sets the cruising pace. A white car slightly ahead in the right lane travels parallel at similar speed and stays in its lane. Farther ahead, another light van in the left lane continues up the rise, reducing gaps for lane changes. Overhead blue directional signs span the roadway, and a no-entry sign marks a side access on the right.", "hazard_reasoning": "A white van is driving in front of the ego car in the ego lane, because of the green traffic light. The green signal may change soon, and following the van helps maintain safe distance and anticipate any sudden stops."}
{"id": "train_05602", "split": "train", "clip_key": "titan_clip_701_000354_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_701_000354_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_701_000354_movie_t-3_augB1.jpg", "titan_clip_701_000354_movie_t-2_augB1.jpg", "titan_clip_701_000354_movie_t-1_augB1.jpg", "titan_clip_701_000354_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single shared lane and no median curves gently right; pavement is smooth and motor traffic is very light. Ahead, a pedestrian in a white T-shirt walks in front of the ego car toward the right side of the road, potentially entering the travel path. Just left and very near, a pedestrian in dark clothing walks toward the camera along the lane edge, reducing clearance beside the vehicle. Farther ahead near the lane center, another pedestrian walks away in the same direction, which may constrain the ego vehicle's pace. A white truck is stopped along the left side ahead with its rear protruding into the lane, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt and walking in front of the ego car, toward the right side of the road. The pedestrian is crossing into the lane ahead, so the driver should slow down to maintain safety."}
{"id": "train_05603", "split": "train", "clip_key": "titan_clip_514_000294_movie", "source": {"subset": "titan", "scenario": "clip_514", "frame": "000294"}, "frames": ["titan_clip_514_000294_movie_t-3.jpg", "titan_clip_514_000294_movie_t-2.jpg", "titan_clip_514_000294_movie_t-1.jpg", "titan_clip_514_000294_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban shopping street with cobblestone paving and no center line runs between storefronts, and traffic is light at low speed. Ahead in the center of the roadway, a pedestrian wearing blue pants walks away from the ego vehicle along the lane, directly in the path and likely to set the pace. On the right side ahead, a motorcycle with a rider approaches toward the ego vehicle near the curb, using the oncoming side of the same narrow roadway. Several other pedestrians line the sidewalks on both sides, some near shop entrances and close to the curb but remaining off the roadway. No salient traffic signals or signs are visible, and there are no parked vehicles or work zones intruding into the lane.", "hazard_reasoning": "There is a pedestrian wearing blue pants and walking away from the ego car, in the middle of the road. Slow down because a pedestrian is in the road ahead and may not notice the vehicle."}
{"id": "train_05604", "split": "train", "clip_key": "2020-0227-104226_047706_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "047706"}, "frames": ["2020-0227-104226_047706_movie_t-3.jpg", "2020-0227-104226_047706_movie_t-2.jpg", "2020-0227-104226_047706_movie_t-1.jpg", "2020-0227-104226_047706_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction and a solid yellow center line runs between mid-rise buildings; the asphalt looks smooth and traffic moves slowly. A green covered truck directly ahead in the left-side ego lane slows and dictates the ego vehicle's pace. An oncoming white minivan approaches in its right-side lane at low speed and passes by while holding its line. A black SUV stands at the right curb in the oncoming lane, narrowing that side of the roadway.", "hazard_reasoning": "There is a green truck slowing in the ego lane, in front of the ego car. The truck's reduced speed increases collision risk, so the driver should slow down to maintain a safe following distance."}
{"id": "train_05605", "split": "train", "clip_key": "titan_clip_835_000186_movie", "source": {"subset": "titan", "scenario": "clip_835", "frame": "000186"}, "frames": ["titan_clip_835_000186_movie_t-3.jpg", "titan_clip_835_000186_movie_t-2.jpg", "titan_clip_835_000186_movie_t-1.jpg", "titan_clip_835_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban shopping street with a narrow single shared lane, no divider, and interlocking brick pavement carries slow mixed traffic. The ego vehicle moves gently past close storefronts amid many pedestrians and bicycles. A cyclist emerges from the right storefront and rides diagonally left ahead across the ego lane, occupying the space directly in front of the car. Two pedestrians wearing black shirts walk away along the right side by the shops, staying near the curb as the car approaches. Far ahead, a small white van proceeds slowly in the same direction up the street, setting the pace. A blue pedestrian sign on the right is prominent, and parked bicycles along the curb narrow the margin.", "hazard_reasoning": "There are two pedestrians wearing black shirts and walking on the right side of the road, away from the ego car. The driver needs to carefully manoeuvre to avoid encroaching on pedestrians who are near the driving path."}
{"id": "train_05606", "split": "train", "clip_key": "2020-0225-145150_038045_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "038045"}, "frames": ["2020-0225-145150_038045_movie_t-3.jpg", "2020-0225-145150_038045_movie_t-2.jpg", "2020-0225-145150_038045_movie_t-1.jpg", "2020-0225-145150_038045_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes and painted islands to the right has dry, well-marked pavement and moderate, slow-moving traffic that gradually picks up. Directly ahead, a blue truck in the ego lane accelerates as traffic moves forward, setting the ego vehicle's pace. On the left shoulder within a hatched bay, a white sedan remains stationary near the lane and may reenter the ego lane. In the adjacent right lane farther ahead, a white van proceeds slowly parallel to the ego vehicle, keeping the flow dense and limiting room to merge. Buildings line both sides with a fenced sidewalk on the right.", "hazard_reasoning": "There is a blue truck accelerating in the ego lane, because traffic is moving forward. The traffic signal has just changed to green and vehicles ahead are accelerating, so you should start moving to maintain safe flow."}
{"id": "train_05607", "split": "train", "clip_key": "titan_clip_431_000066_movie", "source": {"subset": "titan", "scenario": "clip_431", "frame": "000066"}, "frames": ["titan_clip_431_000066_movie_t-3.jpg", "titan_clip_431_000066_movie_t-2.jpg", "titan_clip_431_000066_movie_t-1.jpg", "titan_clip_431_000066_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped van.", "environment_perception": "An urban two-way road with one lane each direction passes mid-rise buildings; the asphalt is smooth with a solid center line, and traffic is light to moderate near a marked crosswalk. Ahead on the left at the curb, a small bus is stopped, narrowing the ego lane and slowing the approach. On the left side of the road closer to the camera, a silver van is stopped at the curb as it parks. On the right by the crosswalk, a cyclist rides along the sidewalk toward the corner and slows, which may bring them into the roadway. A pedestrian signal at the corner shows a standing red figure.", "hazard_reasoning": "There is a silver van stopped on the left side of the road, because it is parking. The parked van may obstruct the lane, so the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_05608", "split": "train", "clip_key": "2020-0220-151845_033502_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "033502"}, "frames": ["2020-0220-151845_033502_movie_t-3.jpg", "2020-0220-151845_033502_movie_t-2.jpg", "2020-0220-151845_033502_movie_t-1.jpg", "2020-0220-151845_033502_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with a planted median separating opposing traffic; pavement is smooth and traffic is moderate but bunching near a signal ahead. In the ego lane a covered flatbed truck ahead slows because congestion develops further up, constraining the ego car. To the right, a van draws alongside and continues forward in a lane that tapers toward the ego lane, potentially merging ahead of the truck. On the left, a person with a bicycle waits by the crosswalk and stays out of the roadway. A traffic signal is visible ahead under the viaduct.", "hazard_reasoning": "There is a red truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. You should slow down to maintain a safe distance and adjust to the reduced speed of the traffic."}
{"id": "train_05609", "split": "train", "clip_key": "titan_clip_1182_000102_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1182_000102_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1182_000102_movie_t-3_augB1.jpg", "titan_clip_1182_000102_movie_t-2_augB1.jpg", "titan_clip_1182_000102_movie_t-1_augB1.jpg", "titan_clip_1182_000102_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian crossing", "environment_perception": "An urban, narrow two-way street with one lane each direction and no median shows worn but dry pavement and light vehicle traffic as the ego car moves slowly in the left lane. On the right curb near the camera, a pedestrian in a black shirt and white skirt steps off the sidewalk and starts crossing toward the left, potentially entering the ego lane. Ahead on the left edge, a pedestrian walks away along the lane beside a stopped van, narrowing clearance and constraining the pace. Farther ahead near the right side, a person pushes a red handcart along the storefronts, moving parallel and not crossing. A small van on the left is stopped with its rear hatch open and partly in the lane, while a parked minivan on the right tightens the corridor.", "hazard_reasoning": "There is a pedestrian wearing a back shirt and a white skirt, on the right side of the street, crossing to the left side of the street. The driver should yield to allow the pedestrian to cross safely."}
{"id": "train_05610", "split": "train", "clip_key": "2020-0213-143552_009682_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009682"}, "frames": ["2020-0213-143552_009682_movie_t-3.jpg", "2020-0213-143552_009682_movie_t-2.jpg", "2020-0213-143552_009682_movie_t-1.jpg", "2020-0213-143552_009682_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane in each direction runs between mid-rise buildings; the pavement is dry and smooth, and traffic is light to moderate. Cones and a small standing sign line the centerline, slightly narrowing the lanes. A black sedan ahead in the ego lane begins moving rightward to merge into the right lane past the cones, effectively setting the ego vehicle's speed. An oncoming silver car to the right approaches and passes by in its lane without drifting toward the center. Farther ahead in the oncoming lane, a white truck approaches among other vehicles, keeping clear of the coned area.", "hazard_reasoning": "There is a black sedan lane changing, from the ego lane to the right lane, because of traffic congestion ahead on the road. You should slow down to maintain a safe following distance and avoid a collision when it cuts in front of you."}
{"id": "train_05611", "split": "train", "clip_key": "titan_clip_1138_000516_movie", "source": {"subset": "titan", "scenario": "clip_1138", "frame": "000516"}, "frames": ["titan_clip_1138_000516_movie_t-3.jpg", "titan_clip_1138_000516_movie_t-2.jpg", "titan_clip_1138_000516_movie_t-1.jpg", "titan_clip_1138_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on the right side.", "environment_perception": "An urban narrow two-way road with one lane each direction runs between buildings, the pavement smooth and traffic light with no moving vehicles. Ahead, a level railway crossing is closed as a train passes, blocking the roadway. Ahead on the right, a pedestrian in a gray shirt walks along the roadway edge and may step toward the ego lane. Farther ahead on the left edge, a person with a backpack pulling a suitcase walks in the same direction near the lane line, constraining the approach. Other pedestrians linger near shopfronts on the right and by a coned-off area on the left, staying close to the curb.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, walking on the right side of the road. The pedestrian could step into the lane unexpectedly, so the driver should be aware."}
{"id": "train_05612", "split": "train", "clip_key": "2020-0127-132751_032128_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "032128"}, "frames": ["2020-0127-132751_032128_movie_t-3.jpg", "2020-0127-132751_032128_movie_t-2.jpg", "2020-0127-132751_032128_movie_t-1.jpg", "2020-0127-132751_032128_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road passes under a weathered overpass, with a single through lane in the underpass and parallel lanes to the right separated by a narrow raised median; the pavement looks dry and intact, and traffic is light. A white box truck ahead in the ego lane drives away from the ego car, steadily moving ahead and setting the pace. On the adjacent lanes to the right beyond the median, a small car proceeds in the same direction and remains outside the ego path. Concrete blocks and short posts form the median, and side ramps climb up on both sides toward surface streets.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05613", "split": "train", "clip_key": "titan_clip_879_000288_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_879_000288_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_879_000288_movie_t-3_augB1.jpg", "titan_clip_879_000288_movie_t-2_augB1.jpg", "titan_clip_879_000288_movie_t-1_augB1.jpg", "titan_clip_879_000288_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with no centerline and smooth asphalt is shown; edge lines bound a single shared lane and traffic is light as the ego car slows for a constricted section. Ahead in the center of the lane, a pedestrian in a white shirt stands holding a bicycle because a parked vehicle blocks space, directly occupying the ego path. Along the left curb just ahead, a white mini car is parked jutting into the roadway, pushing movement toward the middle and constraining the ego vehicle's pace. On the right ahead, a white van is stopped at the curb opposite the other car, creating a bottleneck that the pedestrian must clear before the ego can pass.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, standing in the middle of the road, because of the parked vehicle. The pedestrian may move unpredictably into the vehicle's path, so the driver should slow down to avoid a collision."}
{"id": "train_05614", "split": "train", "clip_key": "titan_clip_22_000258_movie", "source": {"subset": "titan", "scenario": "clip_22", "frame": "000258"}, "frames": ["titan_clip_22_000258_movie_t-3.jpg", "titan_clip_22_000258_movie_t-2.jpg", "titan_clip_22_000258_movie_t-1.jpg", "titan_clip_22_000258_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction runs between tall buildings; the pavement looks smooth and traffic is light as the ego-vehicle approaches a zebra crosswalk at an unsignalized intersection. Several pedestrians ahead traverse from left to right, including a person in black pants and a blue shirt crossing to the right side of the road, and they pass through the ego lane and momentarily control the pace. A small white car ahead in the ego lane slows near the crosswalk behind a box truck farther along, yielding to the people crossing. On the right curb a motorcycle waits by the sidewalk and does not enter the roadway. A pedestrian crossing sign is visible on the right.", "hazard_reasoning": "There is a pedestrian wearing black pants and a blue shirt, crossing to the right side of the road via the crosswalk. The pedestrian is entering the vehicle's path at a marked crossing, requiring the driver to stop to avoid a collision."}
{"id": "train_05615", "split": "train", "clip_key": "2020-0131-103016_039084_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "039084"}, "frames": ["2020-0131-103016_039084_movie_t-3.jpg", "2020-0131-103016_039084_movie_t-2.jpg", "2020-0131-103016_039084_movie_t-1.jpg", "2020-0131-103016_039084_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the oncoming SUV", "environment_perception": "In an urban multi-lane arterial intersection with no physical median, the ego-car waits in a right-turn position on mostly smooth but slightly patched pavement while traffic remains moderate. A black SUV approaches in the oncoming traffic lane ahead-right, continuing straight toward the ego and preventing the right turn. Two medium trucks and several cars follow behind it in the oncoming lanes, maintaining a steady flow that further delays the maneuver. A white sedan is stopped near the right edge of the intersection angled to turn, occupying space beside the ego path. Overhead traffic signals span the far side.", "hazard_reasoning": "There is a black SUV moving towards the ego-car in the oncoming traffic lane, while the ego-car waits to make a right-hand turn. The driver should be aware because turning right will intersect paths with the approaching SUV, risking a collision if it does not yield or slow down."}
{"id": "train_05616", "split": "train", "clip_key": "2020-0210-101957_002486_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "002486"}, "frames": ["2020-0210-101957_002486_movie_t-3.jpg", "2020-0210-101957_002486_movie_t-2.jpg", "2020-0210-101957_002486_movie_t-1.jpg", "2020-0210-101957_002486_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked truck", "environment_perception": "An urban two-way street with one lane each way approaches a signalized intersection with zebra markings; pavement looks smooth and motor traffic is light while pedestrian and bicycle activity is moderate. A cyclist on the right crosses the zebra ahead from right to left, entering the ego lane and dictating the approach speed. Ahead on the left side of the road, a white truck is parked and a pedestrian stands by its door getting into the vehicle, partially occupying the left lane and potentially narrowing the path. Several pedestrians wait near both curbs by the crosswalk and some begin to step out, making them immediately relevant to the ego vehicle's path. Traffic lights hang over the junction but their aspects are not clearly visible in the frame.", "hazard_reasoning": "There is a white truck parked in the left lane, on the left side of the road, because a pedestrian is getting into the vehicle. Drivers should be aware of the stopped vehicle and the pedestrian's movement to anticipate potential obstructions."}
{"id": "train_05617", "split": "train", "clip_key": "titan_clip_52_000444_movie", "source": {"subset": "titan", "scenario": "clip_52", "frame": "000444"}, "frames": ["titan_clip_52_000444_movie_t-3.jpg", "titan_clip_52_000444_movie_t-2.jpg", "titan_clip_52_000444_movie_t-1.jpg", "titan_clip_52_000444_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban side street with a single narrow two-way carriageway and no median extends ahead; the asphalt is dry and smooth, and traffic is empty. The ego vehicle is stopped at a small unsignalized intersection before entering this street, with buildings close on the left and a walled area with trees on the right. No same-direction or oncoming vehicles or pedestrians are visible. A convex roadside mirror stands at the left corner, and a parked bicycle and bins line the left curb without intruding into the lane.", "hazard_reasoning": "No immediate hazards are visible; the road is clear and no other road users are present, so no driver warning is necessary under these conditions."}
{"id": "train_05618", "split": "train", "clip_key": "titan_clip_1114_000516_movie", "source": {"subset": "titan", "scenario": "clip_1114", "frame": "000516"}, "frames": ["titan_clip_1114_000516_movie_t-3.jpg", "titan_clip_1114_000516_movie_t-2.jpg", "titan_clip_1114_000516_movie_t-1.jpg", "titan_clip_1114_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "An urban backstreet without a marked centerline runs between mid-rise buildings, paved with bricks and generally smooth, and traffic is light. A small flatbed truck ahead near the left edge is stopped for loading, narrowing the single usable path and constraining the ego vehicle's pace. A pedestrian in a red shirt and black shorts stands on the left roadside beside the truck, close to the travel lane and may enter the ego lane. Another person walks ahead near the center of the lane while handling a cart, moving slowly and occupying the path. Parked vehicles on both sides and curbside posts further confine the roadway.", "hazard_reasoning": "There is a pedestrian wearing a red shirt and black shorts, standing on the left side of the road. Because they are close to the roadway, the pedestrian may step into the lane unpredictably, so the driver should be cautious of the pedestrian ahead."}
{"id": "train_05619", "split": "train", "clip_key": "2020-0213-143552_004865_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "004865"}, "frames": ["2020-0213-143552_004865_movie_t-3.jpg", "2020-0213-143552_004865_movie_t-2.jpg", "2020-0213-143552_004865_movie_t-1.jpg", "2020-0213-143552_004865_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban two-way arterial with multiple lanes and a painted left-side bike lane stretches ahead; the pavement is dry and traffic is light in the ego direction while steadier flow moves in the opposite lanes. Ahead on the left, a green truck is parked at the curb with its rear open as it is being unloaded, narrowing the bike lane near the ego path. On the near left, a pedestrian walks by a storefront at the curb beside the bike lane, close to the vehicle's side. On the right, several cars and vans approach in the oncoming lanes.", "hazard_reasoning": "There is a green truck parked on the left side of the road, because it is being unloaded. The driver should manoeuvre around the parked truck carefully to avoid collision with the unloading operation."}
{"id": "train_05620", "split": "train", "clip_key": "2020-0205-103411_057037_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "057037"}, "frames": ["2020-0205-103411_057037_movie_t-3.jpg", "2020-0205-103411_057037_movie_t-2.jpg", "2020-0205-103411_057037_movie_t-1.jpg", "2020-0205-103411_057037_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial appears with two same-direction lanes to the left of a hedge median; the pavement is smooth and traffic is light to moderate under a green signal. Oncoming traffic moves on the far side of the median. A silver box truck ahead in the ego lane slows under the green light, constraining the ego vehicle's pace. A black sedan slightly ahead to the left proceeds straight through the intersection in its lane without affecting the ego path. Several pedestrians stand on the left sidewalk at the crosswalk, waiting and not stepping into the road.", "hazard_reasoning": "There is a silver truck slowing in the ego lane. The driver should reduce speed to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_05621", "split": "train", "clip_key": "titan_clip_1315_000174_movie", "source": {"subset": "titan", "scenario": "clip_1315", "frame": "000174"}, "frames": ["titan_clip_1315_000174_movie_t-3.jpg", "titan_clip_1315_000174_movie_t-2.jpg", "titan_clip_1315_000174_movie_t-1.jpg", "titan_clip_1315_000174_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around it", "environment_perception": "An urban two-way street with a single lane each direction curves gently right, the pavement dry and smooth and traffic light. A gray van is parked at the left curb just ahead in the ego lane's path, so it may constrain passing space as the car approaches. A pedestrian walks away along the right sidewalk near the curve, remaining clear of the roadway. Another pedestrian is farther ahead on the left sidewalk beyond the van, moving along the storefronts without approaching the lane.", "hazard_reasoning": "There is a gray van parked on the left side of the road. The parked van narrows the drivable lane space, requiring the driver to carefully manoeuvre around it to maintain a safe clearance."}
{"id": "train_05622", "split": "train", "clip_key": "titan_clip_1292_000048_movie", "source": {"subset": "titan", "scenario": "clip_1292", "frame": "000048"}, "frames": ["titan_clip_1292_000048_movie_t-3.jpg", "titan_clip_1292_000048_movie_t-2.jpg", "titan_clip_1292_000048_movie_t-1.jpg", "titan_clip_1292_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian standing on left", "environment_perception": "An urban two-way street with one narrow lane each direction and no median shows smooth asphalt and a gentle left bend; the ego vehicle proceeds in the left lane with light traffic and a clear oncoming lane. A white van travels ahead in the ego lane at a distance, continuing straight and loosely setting the pace. On the left shoulder by a shopfront, a pedestrian stands while talking on a phone, close to the curb and near the edge of the roadway. The right sidewalk is buffered by trees, planters, and bollards, and no signals or posted speeds are visible.", "hazard_reasoning": "Three is a pedestrian talking on a phone and standing on the left side of the road. The driver should be aware of this distracted pedestrian who may step into the road unexpectedly."}
{"id": "train_05623", "split": "train", "clip_key": "2020-0131-103016_022622_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "022622"}, "frames": ["2020-0131-103016_022622_movie_t-3.jpg", "2020-0131-103016_022622_movie_t-2.jpg", "2020-0131-103016_022622_movie_t-1.jpg", "2020-0131-103016_022622_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with a single through lane in the ego direction descends gently, separated from a parallel opposite carriageway on the right by a metal fence; the pavement is dry and traffic is generally moderate with denser flow visible farther ahead. A white box truck ahead in the ego lane slows as vehicles bunch up down the hill, constraining the ego car's pace because of congestion ahead. On the separated roadway to the right, a stream of oncoming cars moves steadily behind the fence and does not interact with the ego lane. On the left sidewalk, a pedestrian stands near the railing and remains clear of the roadway.", "hazard_reasoning": "There is a white truck slowing in the ego-car lane, because of traffic congestion ahead. Slow down to maintain a safe following distance as the reduced speed indicates congested traffic ahead."}
{"id": "train_05624", "split": "train", "clip_key": "titan_clip_1013_000084_movie", "source": {"subset": "titan", "scenario": "clip_1013", "frame": "000084"}, "frames": ["titan_clip_1013_000084_movie_t-3.jpg", "titan_clip_1013_000084_movie_t-2.jpg", "titan_clip_1013_000084_movie_t-1.jpg", "titan_clip_1013_000084_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban backstreet with a single lane runs between tall buildings; the asphalt is smooth and the passage is constricted by railings on the left and temporary construction barriers on the right, with no visible vehicle traffic. Ahead on the left, a pedestrian wearing blue pants and a blue shirt walks away from the ego vehicle along the lane, remaining in the path of travel. On the right edge, two uniformed workers stand beside orange cones at the work zone, narrowing the corridor near the vehicle's line. Farther ahead, several pedestrians move across the lane near a temporary wall at the end of the block, potentially entering the vehicle's path. The cones and barricades mark the work area and create a minor choke point.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a blue shirt, walking on the left side of the road, away from the ego car. The pedestrian's proximity to the roadway and movement toward the lane poses a collision risk, so the driver should carefully manoeuvre to avoid them."}
{"id": "train_05625", "split": "train", "clip_key": "2020-0225-145150_033571_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "033571"}, "frames": ["2020-0225-145150_033571_movie_t-3.jpg", "2020-0225-145150_033571_movie_t-2.jpg", "2020-0225-145150_033571_movie_t-1.jpg", "2020-0225-145150_033571_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and a painted hatched separator on the right shows heavy, mostly stopped traffic. Ahead in the ego lane, a blue van is halted by congestion and blocks the ego vehicle's path. In the adjacent lane to the left, a line of white vans and small trucks waits in queue, inching forward alongside. Farther ahead in the ego lane, a green box truck also stands still behind the jam, extending the backlog. A pedestrian overpass spans the road, and a roadside no-stopping sign is visible.", "hazard_reasoning": "There is a blue van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Therefore, the driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_05626", "split": "train", "clip_key": "2020-0205-103411_078940_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "078940"}, "frames": ["2020-0205-103411_078940_movie_t-3.jpg", "2020-0205-103411_078940_movie_t-2.jpg", "2020-0205-103411_078940_movie_t-1.jpg", "2020-0205-103411_078940_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban divided arterial with at least two same-direction lanes runs between mid-rise buildings, separated from oncoming lanes by a low hedge median. The pavement is dry but strong sun glare washes the view, and traffic is slow. A black truck is stopped directly ahead in the ego lane because of traffic congestion, fully blocking the path and holding the ego vehicle. To the left, a white box truck in the adjacent lane creeps forward and passes the stopped vehicle. Beyond the median, oncoming cars move steadily and remain separated by the hedge.", "hazard_reasoning": "There is a black truck stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain safety as the halted truck ahead reduces spacing and increases collision risk."}
{"id": "train_05627", "split": "train", "clip_key": "2020-0226-140503_055517_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "055517"}, "frames": ["2020-0226-140503_055517_movie_t-3.jpg", "2020-0226-140503_055517_movie_t-2.jpg", "2020-0226-140503_055517_movie_t-1.jpg", "2020-0226-140503_055517_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane intersection appears with red-painted approach lanes and smooth pavement; traffic is moderate as the ego car waits in the left lane. Overhead signals show green arrows for this approach, and a white van directly ahead in the ego lane accelerates forward under the arrows, pulling away from the ego vehicle. In the adjacent right same-direction lane, a black taxi slightly ahead proceeds straight through the junction, moving parallel to the ego path. Along the left sidewalk, a dense crowd of pedestrians and a cyclist travel along the fenced path near the crosswalk without entering the roadway.", "hazard_reasoning": "There is a white van driving away from the ego car, because of the green light arrows, in front of the ego car. Follow the vehicle ahead to maintain a safe distance and proceed with the green arrow signal."}
{"id": "train_05628", "split": "train", "clip_key": "2020-0225-102455_004504_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "004504"}, "frames": ["2020-0225-102455_004504_movie_t-3.jpg", "2020-0225-102455_004504_movie_t-2.jpg", "2020-0225-102455_004504_movie_t-1.jpg", "2020-0225-102455_004504_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road in Japan curves right with a striped left shoulder; the pavement is dry and intact, and traffic is heavy and slow. A gray box truck directly ahead of the ego car accelerates away along the curve, opening a gap. A large box truck on the left runs alongside at low speed and edges slightly ahead, narrowing lateral space but staying in its lane. A small white van remains ahead in the lane moving slowly with the queue, keeping the ego's pace low. Farther up the bend several trucks continue in a dense line. Overhead blue guide signs on a gantry are visible above the roadway.", "hazard_reasoning": "There is a gray truck accelerating away from the ego car, in front of the ego car. Because it blocks visibility ahead, you should yield until you can see clearly ahead."}
{"id": "train_05629", "split": "train", "clip_key": "titan_clip_714_000402_movie", "source": {"subset": "titan", "scenario": "clip_714", "frame": "000402"}, "frames": ["titan_clip_714_000402_movie_t-3.jpg", "titan_clip_714_000402_movie_t-2.jpg", "titan_clip_714_000402_movie_t-1.jpg", "titan_clip_714_000402_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around pedestrians carefully.", "environment_perception": "A narrow urban street without centerline markings runs ahead, bordered by railings and planter edges; the pavement is smooth and traffic is light with no vehicles visible. Two pedestrians wearing black shirts walk ahead along the left side of the road away from the ego car, close to the travel path and potentially affecting lane position. A pedestrian on the right ahead walks away beside the green railing, remaining near the edge. Cones and temporary barriers line the left margin, slightly narrowing the roadway.", "hazard_reasoning": "There are two pedestrians wearing a black shirt, walking on the left side of the road, away from the ego car. They could enter the vehicle's path unexpectedly, so the driver should manoeuvre around them carefully."}
{"id": "train_05630", "split": "train", "clip_key": "2020-0218-103119_046700_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "046700"}, "frames": ["2020-0218-103119_046700_movie_t-3.jpg", "2020-0218-103119_046700_movie_t-2.jpg", "2020-0218-103119_046700_movie_t-1.jpg", "2020-0218-103119_046700_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane in each direction runs between midrise buildings, the pavement is smooth, and overall flow is moderate with steady opposing traffic. A white box truck directly ahead in the ego lane is stopped, constraining the ego vehicle's path. A small white car approaches in the oncoming lane to the right and passes by, preventing an immediate overtake. A large bus also travels toward the camera along the oncoming side at the right edge as it draws alongside, narrowing space.", "hazard_reasoning": "There is a white truck stopped in in the ego lane. This stopped truck blocks the travel path and poses a collision risk, so the driver should stop immediately."}
{"id": "train_05631", "split": "train", "clip_key": "2020-0206-101736_011145_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "011145"}, "frames": ["2020-0206-101736_011145_movie_t-3.jpg", "2020-0206-101736_011145_movie_t-2.jpg", "2020-0206-101736_011145_movie_t-1.jpg", "2020-0206-101736_011145_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction and no median shows light flow on smooth pavement. A small box truck ahead in the left ego lane pulls away, effectively leading the ego vehicle. On the right, a red minivan is parked tight to the curb, slightly narrowing the corridor. A pedestrian walks along the left sidewalk past storefronts, staying off the road. No oncoming traffic or salient signals are visible.", "hazard_reasoning": "There is a white truck accelerating ahead of the ego-car, in the ego lane. The truck's speed increase could reduce your reaction time if it brakes suddenly, requiring you to maintain a safe following distance."}
{"id": "train_05632", "split": "train", "clip_key": "2020-0129-105040_091046_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "091046"}, "frames": ["2020-0129-105040_091046_movie_t-3.jpg", "2020-0129-105040_091046_movie_t-2.jpg", "2020-0129-105040_091046_movie_t-1.jpg", "2020-0129-105040_091046_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A tree-lined urban boulevard with a landscaped median divides two lanes each way; the pavement looks smooth and traffic flows light to moderate without major changes. A white mini truck directly ahead in the ego lane slows with traffic congestion ahead and therefore sets the ego car's pace. A white passenger car in the adjacent left lane runs slightly ahead at a steady speed, remaining in its lane and not merging. On the opposite carriageway to the right of the median, a stream of oncoming cars approaches without affecting the ego lane.", "hazard_reasoning": "There is a white truck slowing down because there is traffic congestion in front of the ego car. The driver should reduce speed to maintain a safe following distance and avoid a collision with the decelerating vehicles ahead."}
{"id": "train_05633", "split": "train", "clip_key": "2020-0204-150838_040361_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "040361"}, "frames": ["2020-0204-150838_040361_movie_t-3.jpg", "2020-0204-150838_040361_movie_t-2.jpg", "2020-0204-150838_040361_movie_t-1.jpg", "2020-0204-150838_040361_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial corridor with three same-direction lanes and no median has dry, well-kept pavement and moderate flow. A white van directly ahead in the ego lane accelerates and opens a small gap. A long flatbed truck in the right lane proceeds alongside slightly ahead, restricting a move to the right. A silver hatchback in the left lane travels just ahead near the curb, limiting a left merge. An overhead blue lane-use sign indicates three lanes continue straight while the rightmost lane is designated for a right turn.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05634", "split": "train", "clip_key": "2020-0127-132751_104392_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0127-132751_104392_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0127-132751_104392_movie_t-3_augB1.jpg", "2020-0127-132751_104392_movie_t-2_augB1.jpg", "2020-0127-132751_104392_movie_t-1_augB1.jpg", "2020-0127-132751_104392_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for the pedestrian crossing", "environment_perception": "An urban two-lane road with a solid yellow center line passes shops, the pavement is dry, and traffic is light but momentarily slows. A silver van ahead in the ego lane brakes and waits, constraining the ego vehicle's pace. A pedestrian wearing a brown coat and carrying a handbag crosses in front of the ego car from right to left, occupying the lane and prompting the halt. An oncoming car travels in the opposing lane to the right, continuing past within its lane.", "hazard_reasoning": "There is a pedestrian wearing a brown coat and carrying a handbag, crossing the street in front of the ego car, from the right side to the left side. The driver should stop to avoid colliding with the pedestrian who is crossing ahead."}
{"id": "train_05635", "split": "train", "clip_key": "2020-0127-132751_088442_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "088442"}, "frames": ["2020-0127-132751_088442_movie_t-3.jpg", "2020-0127-132751_088442_movie_t-2.jpg", "2020-0127-132751_088442_movie_t-1.jpg", "2020-0127-132751_088442_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with multiple lanes and a wide painted median runs straight on dry pavement, with light same-direction flow and steadier oncoming traffic. Ahead in the ego lane, a blue truck slows near the crosswalk, constraining the ego vehicle's pace. On the left sidewalk by the zebra crossing, several pedestrians, one in reflective gear, wait at the curb and may step out when clear. In the opposite lanes to the right, a stream of cars including a white van approaches steadily, remaining separated by the hatched median. No traffic signal is visible.", "hazard_reasoning": "There is a blue truck slowing down in the ego lane. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_05636", "split": "train", "clip_key": "2020-0129-105040_046842_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "046842"}, "frames": ["2020-0129-105040_046842_movie_t-3.jpg", "2020-0129-105040_046842_movie_t-2.jpg", "2020-0129-105040_046842_movie_t-1.jpg", "2020-0129-105040_046842_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs under an elevated structure, curving gently left with good pavement and a guardrail separating a parallel lane on the right; traffic flow is light. Ahead in the ego lane, a white van proceeds steadily at moderate speed, setting the pace for the ego vehicle. On the near left, a white car draws alongside and continues forward in the adjacent same-direction lane, moving slightly ahead as the road curves. Beyond the right guardrail, several cars travel in a parallel same-direction lane, clearly separated from the ego path. A large support pillar for the overhead roadway stands ahead near the right edge, partially narrowing sight lines but not intruding into the lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05637", "split": "train", "clip_key": "titan_clip_504_000150_movie", "source": {"subset": "titan", "scenario": "clip_504", "frame": "000150"}, "frames": ["titan_clip_504_000150_movie_t-3.jpg", "titan_clip_504_000150_movie_t-2.jpg", "titan_clip_504_000150_movie_t-1.jpg", "titan_clip_504_000150_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban road with no centerline runs between buildings on the left and a guardrail with a vine-covered fence on the right, and the worn pavement curves slightly left; traffic is very light with no vehicles present. Ahead on the left, a small group of pedestrians walks toward the ego-vehicle in the roadway, occupying part of the lane and potentially entering its path. No salient signals or posted speeds are visible, and the bend plus the close guardrail create a constrained passage.", "hazard_reasoning": "There is a group of people walking in the middle of the road, toward the ego-car. The driver should slow down because pedestrians are entering the travel lane and may cross unpredictably."}
{"id": "train_05638", "split": "train", "clip_key": "2020-0131-135401_066016_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "066016"}, "frames": ["2020-0131-135401_066016_movie_t-3.jpg", "2020-0131-135401_066016_movie_t-2.jpg", "2020-0131-135401_066016_movie_t-1.jpg", "2020-0131-135401_066016_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs beneath an elevated roadway; the pavement is dry and intact, and traffic is moderate but begins to move. A white van directly ahead in the ego lane accelerates away from the ego car as the traffic light ahead turns green, steadily opening the gap. In the right adjacent lane, a queue of vans creeps forward under the viaduct, progressing slowly and limiting any chance to change right. A white van alongside on the right moves off in parallel, keeping pace near the ego vehicle. Temporary barriers line the left curb without encroaching.", "hazard_reasoning": "There is a white van accelerating away from the ego car, in the ego lane, in front of the ego car, because the traffic light has turned green. You need to start moving to follow the flow of traffic and avoid delaying."}
{"id": "train_05639", "split": "train", "clip_key": "2020-0131-135401_037390_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "037390"}, "frames": ["2020-0131-135401_037390_movie_t-3.jpg", "2020-0131-135401_037390_movie_t-2.jpg", "2020-0131-135401_037390_movie_t-1.jpg", "2020-0131-135401_037390_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban two-way road with a single lane per direction approaches a signalized intersection; the pavement is dry and overall traffic is light to moderate, with cross-traffic flowing through the junction. Ahead in the ego lane, a white hatchback is stopped because the traffic light at the intersection shows red, so it holds the ego car. Across the junction, several cars move left to right through the cross street, continuing while the ego approach remains at a stop. Near the right side of the intersection, two cyclists ride across from right to left ahead, passing through in front of the stopped queue. The overhead signal displays red, and a school-route warning sign stands on the left pole.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego-car, in the ego lane, because of the red traffic light ahead in the intersection. You should yield to the stopped vehicle to maintain a safe following distance and avoid a collision."}
{"id": "train_05640", "split": "train", "clip_key": "titan_clip_876_000324_movie", "source": {"subset": "titan", "scenario": "clip_876", "frame": "000324"}, "frames": ["titan_clip_876_000324_movie_t-3.jpg", "titan_clip_876_000324_movie_t-2.jpg", "titan_clip_876_000324_movie_t-1.jpg", "titan_clip_876_000324_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian at crosswalk", "environment_perception": "An urban commercial street comes into view as the ego-vehicle approaches a marked crosswalk; the narrow roadway has no median, the surface is in good condition, and no moving vehicles are present. Ahead slightly left at the crosswalk, a pedestrian wearing a cap and carrying a handbag and umbrellas crosses from right to left across the lane, directly affecting the ego vehicle's path. On the left sidewalk, two pedestrians walk along the storefronts parallel to the road and remain off the carriageway. Near the right curb by the crosswalk, another person stands still and does not enter the lane. A blue pedestrian crossing sign is visible, and short railings separate the sidewalk from the street.", "hazard_reasoning": "There is a pedestrian wearing a cap, holding a handbag and umbrellas, and crossing the street, to the left side, ahead at the crosswalk. The driver should yield because the pedestrian is on the crosswalk and has the right-of-way while the light is red."}
{"id": "train_05641", "split": "train", "clip_key": "titan_clip_711_000168_movie", "source": {"subset": "titan", "scenario": "clip_711", "frame": "000168"}, "frames": ["titan_clip_711_000168_movie_t-3.jpg", "titan_clip_711_000168_movie_t-2.jpg", "titan_clip_711_000168_movie_t-1.jpg", "titan_clip_711_000168_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Yield to cyclist.", "environment_perception": "An urban residential scene shows a narrow two-way road without a centerline intersecting side streets between close buildings; the pavement looks smooth and traffic is light. Ahead, a cyclist wearing a white shirt rides toward the ego vehicle along the right side of the road, entering the intersection and likely to pass directly across the ego lane. From the left side street, the nose of a silver car waits at the junction partly protruding, and it may move into the ego lane. A convex safety mirror stands on the right corner to aid visibility at the intersection.", "hazard_reasoning": "There is a cyclist wearing a white shirt, cycling on the right side of the road, towards the ego car. The cyclist is moving toward the ego vehicle at an unregulated intersection, so the driver must yield to prevent a collision."}
{"id": "train_05642", "split": "train", "clip_key": "titan_clip_364_000588_movie", "source": {"subset": "titan", "scenario": "clip_364", "frame": "000588"}, "frames": ["titan_clip_364_000588_movie_t-3.jpg", "titan_clip_364_000588_movie_t-2.jpg", "titan_clip_364_000588_movie_t-1.jpg", "titan_clip_364_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow two-way urban residential street without a centerline runs between closely spaced buildings; the dry pavement is slightly worn and traffic is light with no vehicles ahead or oncoming. On the right edge ahead, a man in a gray shirt holds a cane and walks away from the ego car along the line, partly in the roadway and potentially constraining the ego path. Farther ahead on the same side, a person with an umbrella walks in the same direction near the curb, likewise occupying the edge of the lane. A 20 km/h speed limit sign stands on the left.", "hazard_reasoning": "There is a man wearing a gray shirt, holding a cane, and walking on the right side of the road, away from the ego-car. The driver should carefully manoeuvre to maintain distance and avoid endangering the pedestrian."}
{"id": "train_05643", "split": "train", "clip_key": "titan_clip_327_000462_movie", "source": {"subset": "titan", "scenario": "clip_327", "frame": "000462"}, "frames": ["titan_clip_327_000462_movie_t-3.jpg", "titan_clip_327_000462_movie_t-2.jpg", "titan_clip_327_000462_movie_t-1.jpg", "titan_clip_327_000462_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of woman walking ahead", "environment_perception": "An urban shopping street with a narrow one-lane shared roadway is paved with interlocking bricks and appears dry, with no centerline or median; motor traffic is very light and movement is slow among pedestrians. On the left side of the intersection, a woman wearing brown culottes walks toward the ego car, edging into the travel space and potentially entering its path. Farther ahead near the center-right, a person pushes a green handcart away from the ego vehicle along the lane, constraining the available space. Near the left corner, a man with a backpack steps off the sidewalk and begins crossing diagonally ahead.", "hazard_reasoning": "There is a woman wearing brown culottes and walking on the left side of the intersection, toward the ego car. The pedestrian is moving toward the vehicle and may cross its path, so the driver should be aware."}
{"id": "train_05644", "split": "train", "clip_key": "2020-0205-152530_049494_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "049494"}, "frames": ["2020-0205-152530_049494_movie_t-3.jpg", "2020-0205-152530_049494_movie_t-2.jpg", "2020-0205-152530_049494_movie_t-1.jpg", "2020-0205-152530_049494_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial has three same-direction lanes and a cone-lined work zone along the right edge; the pavement is smooth and traffic is moderate, flowing steadily toward an intersection. A small white box truck ahead in the ego lane accelerates as the signal ahead is green, becoming the immediate leader and setting the ego car's pace. To the right, a larger delivery truck travels slightly ahead in the adjacent lane, maintaining speed parallel to the ego lane. Farther ahead in the left lane, another white truck moves steadily with a passenger car in front of it, leaving clear spacing. Overhead blue signs show two through lanes and a right-turn-only lane, and the work zone remains outside the ego lane.", "hazard_reasoning": "There is a white truck speeding up in the ego lane, because of the green traffic light. Following the vehicle ahead will help maintain a safe distance and avoid sudden maneuvers when the signal changes."}
{"id": "train_05645", "split": "train", "clip_key": "2020-0207-101955_118865_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "118865"}, "frames": ["2020-0207-101955_118865_movie_t-3.jpg", "2020-0207-101955_118865_movie_t-2.jpg", "2020-0207-101955_118865_movie_t-1.jpg", "2020-0207-101955_118865_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway carries three same-direction lanes with a curbside hedge on the left and a guardrail on the right; the pavement is clean and the flow is heavy, bunching ahead. Ahead in the ego lane, a blue sedan slows because of traffic congestion ahead, and the ego car follows at reduced speed. In the adjacent right lane beside the ego vehicle, a white van followed by a white wagon sits in a slow-moving queue, creeping forward and limiting any rightward lane change. Farther ahead under the structure, a large white box truck in the middle-right lanes moves slowly and effectively leads the queue, constraining the pace of vehicles in view.", "hazard_reasoning": "There is a blue sedan, slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver needs to slow down to maintain a safe following distance and avoid a collision with the slowing vehicle."}
{"id": "train_05646", "split": "train", "clip_key": "2020-0213-143552_025004_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "025004"}, "frames": ["2020-0213-143552_025004_movie_t-3.jpg", "2020-0213-143552_025004_movie_t-2.jpg", "2020-0213-143552_025004_movie_t-1.jpg", "2020-0213-143552_025004_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road approaches a broad signalized intersection with good pavement and moderate flow. A black motorcycle directly ahead in the same direction is stopped at the stop line, waiting because the light for our approach is red, so it constrains the ego vehicle. Cross-street traffic, including several cars and a van, proceeds left-to-right and right-to-left through the junction on their green, crossing our path but staying clear of the ego lane. Groups of pedestrians stand on the near-side corners beside the zebra crossings. The overhead signal facing the ego approach shows red.", "hazard_reasoning": "There is a black motorcycle stopped in the ego lane because of the red traffic light ahead in the intersection. Stop to avoid colliding with the halted motorcycle at the red signal."}
{"id": "train_05647", "split": "train", "clip_key": "2020-0207-151349_073438_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "073438"}, "frames": ["2020-0207-151349_073438_movie_t-3.jpg", "2020-0207-151349_073438_movie_t-2.jpg", "2020-0207-151349_073438_movie_t-1.jpg", "2020-0207-151349_073438_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs beneath an elevated expressway, with a guardrail median separating oncoming lanes on the right; pavement looks smooth and traffic in our direction is light while the opposite side is heavier. A black compact car directly ahead in the left lane proceeds steadily and sets our pace. Farther ahead, a small white car in the same lane continues along the gentle right curve under the pillars. To the right beyond the median, a queue of oncoming cars moves slowly toward a visible signalized junction. Tall support columns and the curving guardrail constrain the right edge of our lane, and low sun glare from the left reduces contrast.", "hazard_reasoning": "As there are no visible hazards or risk factors and traffic appears to be flowing smoothly, no immediate driver warning is required."}
{"id": "train_05648", "split": "train", "clip_key": "titan_clip_1041_000042_movie", "source": {"subset": "titan", "scenario": "clip_1041", "frame": "000042"}, "frames": ["titan_clip_1041_000042_movie_t-3.jpg", "titan_clip_1041_000042_movie_t-2.jpg", "titan_clip_1041_000042_movie_t-1.jpg", "titan_clip_1041_000042_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down and watch for cyclist", "environment_perception": "A narrow urban shopping street with a shared bidirectional lane and no median has dry, intact pavement and light, slow traffic. Ahead in the center, a cyclist in a white T-shirt rides away in the middle of the road, effectively setting the ego car's pace as the curbside is blocked by parked bicycles. Farther ahead near the left edge, a second cyclist also proceeds away and remains in the ego vehicle's path. In the distance, a small blue truck sits in the same-direction lane facing away, leaving a narrow passage between the storefront displays and curbside bikes.", "hazard_reasoning": "There is a cyclist wearing a white t-shirt, cycling in the middle of the road, away from the ego car, because the cycling lane is blocked. The driver should slow down to maintain a safe distance from the cyclist riding unpredictably in the center of the road."}
{"id": "train_05649", "split": "train", "clip_key": "titan_clip_44_000408_movie", "source": {"subset": "titan", "scenario": "clip_44", "frame": "000408"}, "frames": ["titan_clip_44_000408_movie_t-3.jpg", "titan_clip_44_000408_movie_t-2.jpg", "titan_clip_44_000408_movie_t-1.jpg", "titan_clip_44_000408_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial alley with paving-stone surface and no lane markings runs straight between storefronts; it functions as a single narrow lane with no divider, and the pavement looks intact while vehicle traffic is light but pedestrian activity is frequent. Two pedestrians wearing black pants and black coats stand ahead along the left side of the ego lane where there is no sidewalk, occupying part of the lane and constraining the vehicle's pace. Farther ahead in the middle of the lane, a person walks toward the camera, remaining in the vehicle's path. On the right foreground, another pedestrian walks away in the same lane near the curb, moving in the ego direction. No traffic signals or unusual signs are evident.", "hazard_reasoning": "There are two pedestrians, wearing black pants and black coats, standing in the ego lane, towards the left side of the road, because there is no sidewalk. The driver should slow down to avoid colliding with pedestrians who are walking in the travel lane due to the lack of sidewalk."}
{"id": "train_05650", "split": "train", "clip_key": "2020-0227-153144_033020_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "033020"}, "frames": ["2020-0227-153144_033020_movie_t-3.jpg", "2020-0227-153144_033020_movie_t-2.jpg", "2020-0227-153144_033020_movie_t-1.jpg", "2020-0227-153144_033020_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban corridor with tall buildings lines a multi-lane arterial carrying several same-direction lanes separated by chevron markings; the asphalt is smooth and traffic is heavy and mostly stopped. Directly ahead in the ego lane, a white minivan is stopped due to congestion ahead, holding the ego vehicle in place. In the lane to the right, a black boxy minivan sits slightly ahead and creeps forward with the queue, remaining in its lane and parallel to the ego. In the lane to the left, a white minivan moves slowly forward alongside the queue. A roadside no-right-turn sign is visible on the right near the intersection, and overhead signal masts span the road further ahead.", "hazard_reasoning": "There is a white minivan stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle."}
{"id": "train_05651", "split": "train", "clip_key": "2020-0210-101957_060424_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "060424"}, "frames": ["2020-0210-101957_060424_movie_t-3.jpg", "2020-0210-101957_060424_movie_t-2.jpg", "2020-0210-101957_060424_movie_t-1.jpg", "2020-0210-101957_060424_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with a single narrow lane in the ego direction runs beside a high wall on the right and apartment buildings on the left; the pavement is smooth and traffic is light. Ahead in the ego lane, a green truck drives away at a steady pace, effectively controlling the ego vehicle's speed as they proceed along the corridor with a striped shoulder next to the wall.", "hazard_reasoning": "There is a green truck driving away from the ego car, in the ego lane. The truck may brake unexpectedly or obscure road hazards ahead, so the driver should maintain a safe following distance."}
{"id": "train_05652", "split": "train", "clip_key": "2020-0203-114632_018074_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "018074"}, "frames": ["2020-0203-114632_018074_movie_t-3.jpg", "2020-0203-114632_018074_movie_t-2.jpg", "2020-0203-114632_018074_movie_t-1.jpg", "2020-0203-114632_018074_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with no median and good pavement leads to a signalized intersection, and traffic flows at a moderate pace. A yellow taxi directly ahead in the ego lane continues straight and slows slightly toward the crosswalk, setting the ego vehicle's pace. In the opposite direction, a silver sedan and a white van travel toward us through the junction in their lanes without encroaching. On the far right of the oncoming side, a white box truck is stopped at the curb near the intersection, slightly narrowing the roadside.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05653", "split": "train", "clip_key": "2020-0218-103119_007842_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "007842"}, "frames": ["2020-0218-103119_007842_movie_t-3.jpg", "2020-0218-103119_007842_movie_t-2.jpg", "2020-0218-103119_007842_movie_t-1.jpg", "2020-0218-103119_007842_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban residential two-way road with green edge strips and no median runs straight ahead; the pavement is intact and traffic is light with no oncoming vehicles visible. A white box truck ahead in the ego lane slows and creeps forward, constraining the ego car's pace. A white van is parked close along the left curb, and several bicycles are parked on the right shoulder, narrowing the passage slightly. Buildings, fences, and utility poles line both sides, and no active signals or notable signs influence movement.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The driver should slow down to maintain a safe following distance and avoid a rear-end collision with the decelerating truck."}
{"id": "train_05654", "split": "train", "clip_key": "titan_clip_1343_000438_movie", "source": {"subset": "titan", "scenario": "clip_1343", "frame": "000438"}, "frames": ["titan_clip_1343_000438_movie_t-3.jpg", "titan_clip_1343_000438_movie_t-2.jpg", "titan_clip_1343_000438_movie_t-1.jpg", "titan_clip_1343_000438_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way road with left-hand traffic and no median runs past shops, the pavement smooth and traffic light, with many vehicles parked along the left curb near a zebra crossing at a corner. Ahead at the crosswalk, a lady wearing a white T-shirt and brown skirt walks from the left to the right across the ego lane, directly in front of the vehicle's path. On the right side of the crosswalk, two pedestrians step off the curb and start moving leftward, following after her. A white minivan and other parked cars line the left side near the intersection, narrowing space close to the corner.", "hazard_reasoning": "There is a lady, wearing a white t-shirt and brown skirt, crossing the street from the left side to the right side. The pedestrian is directly in the vehicle's path, requiring the driver to slow down to ensure safe passage."}
{"id": "train_05655", "split": "train", "clip_key": "2020-0220-102630_000591_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "000591"}, "frames": ["2020-0220-102630_000591_movie_t-3.jpg", "2020-0220-102630_000591_movie_t-2.jpg", "2020-0220-102630_000591_movie_t-1.jpg", "2020-0220-102630_000591_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down now.", "environment_perception": "An urban divided arterial with three same-direction lanes runs alongside an elevated expressway, bordered by a planted median; the pavement is smooth and traffic is moderate. A black sedan directly ahead in the ego lane changes to the right lane in front of the ego car, opening space ahead as it merges. A white box truck in the right lane travels alongside and slightly ahead, continuing straight and shaping the gap the sedan moves into. A silver sedan in the left lane draws past and proceeds straight without affecting the ego path. A 50 speed-limit sign is posted on the left.", "hazard_reasoning": "There is a black sedan lane changing in front of the ego car, from the ego lane to the right lane. The sedan's sudden merge may lead to a collision if the driver does not reduce speed and increase following distance under this situation."}
{"id": "train_05656", "split": "train", "clip_key": "2020-0214-102601_014293_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "014293"}, "frames": ["2020-0214-102601_014293_movie_t-3.jpg", "2020-0214-102601_014293_movie_t-2.jpg", "2020-0214-102601_014293_movie_t-1.jpg", "2020-0214-102601_014293_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement runs straight between mid-rise buildings, separated from sidewalks by curbs and a rail on the right, and traffic is light with steady flow. A white van ahead in the left lane drives away from the ego vehicle at a modest pace, remaining in-lane and setting the immediate following distance. Farther ahead in the same direction, a box truck continues along the corridor, influencing the general pace of vehicles upstream. A dark car travels ahead in the adjacent right lane at similar speed without encroaching on the ego lane. An overhead guide sign indicates Shutoko is 300 m ahead.", "hazard_reasoning": "There is a white van driving away from the ego car, in the left lane. It may brake suddenly at the red light ahead, so you should slow down to maintain a safe distance."}
{"id": "train_05657", "split": "train", "clip_key": "2020-0131-103016_020371_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "020371"}, "frames": ["2020-0131-103016_020371_movie_t-3.jpg", "2020-0131-103016_020371_movie_t-2.jpg", "2020-0131-103016_020371_movie_t-1.jpg", "2020-0131-103016_020371_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian at crosswalk", "environment_perception": "An urban two-way road with left-hand traffic approaches a wide signalized intersection; the pavement is smooth with a painted triangular island, and traffic is light in the ego direction while moderate cross-traffic flows. The overhead signal facing the ego shows red, so the vehicle waits at the stop line. Two pedestrians cross the zebra crossing directly ahead from right to left across the ego lane, walking steadily and occupying the path. To the left ahead at the crosswalk, a pedestrian wearing a coat and carrying a backpack crosses toward the center and may enter the ego lane. A group of pedestrians stands on the far-left curb waiting to cross.", "hazard_reasoning": "There is a pedestrian wearing a coat, carrying a backpack, and crossing the street, to the left side, ahead at the crosswalk. You should yield to allow the pedestrian safe passage across the crosswalk."}
{"id": "train_05658", "split": "train", "clip_key": "2020-0207-101955_086031_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "086031"}, "frames": ["2020-0207-101955_086031_movie_t-3.jpg", "2020-0207-101955_086031_movie_t-2.jpg", "2020-0207-101955_086031_movie_t-1.jpg", "2020-0207-101955_086031_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Accelerate to keep safe following distance", "environment_perception": "An urban expressway with two same-direction lanes curves right between high sound barriers and an overhead viaduct; the pavement is smooth and traffic is light. Ahead in the ego lane, a blue truck signals and moves from the ego lane to the left lane, taking the available space there and merging smoothly. Farther ahead in the left lane, another cargo truck continues at a steady pace, remaining in front of the ego vehicle. Overhead guide signs are visible in the distance.", "hazard_reasoning": "There is a blue truck lane changing in front of the ego car, from the ego lane to the left lane, because there is space in the left lane. The truck's sudden merge reduces your available space and increases collision risk, so you should accelerate to keep safe following distance."}
{"id": "train_05659", "split": "train", "clip_key": "titan_clip_360_000492_movie", "source": {"subset": "titan", "scenario": "clip_360", "frame": "000492"}, "frames": ["titan_clip_360_000492_movie_t-3.jpg", "titan_clip_360_000492_movie_t-2.jpg", "titan_clip_360_000492_movie_t-1.jpg", "titan_clip_360_000492_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban narrow two-way street with interlocking brick pavement has no median or lane markings, and traffic is light with no moving vehicles; the scene centers on pedestrian activity at a small intersection ahead. At the right side of the intersection, a pedestrian in a white shirt carrying a handbag crosses toward the camera, entering the ego lane and briefly occupying its path. In the center ahead, two people walk left to right across the roadway, continuing across the lane in front of the vehicle. On the left near a white car by a driveway, another pedestrian steps off the curb and crosses toward the middle of the street.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, crossing the street towards the ego car, at the right side of the intersection. The pedestrian is entering the vehicle's path, so the driver must yield to avoid collision."}
{"id": "train_05660", "split": "train", "clip_key": "2020-0204-103442_008931_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "008931"}, "frames": ["2020-0204-103442_008931_movie_t-3.jpg", "2020-0204-103442_008931_movie_t-2.jpg", "2020-0204-103442_008931_movie_t-1.jpg", "2020-0204-103442_008931_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane divided arterial runs straight between tall buildings, with two lanes in the ego direction and a fenced median on the right; the dry pavement is smooth and traffic ahead appears moderate to heavy with visible congestion. A black SUV directly ahead in the ego lane slows because of the traffic jam forming in front, constraining the ego vehicle's pace. A white pickup in the adjacent left lane travels nearly alongside but slightly behind, holding speed and potentially entering the ego lane if space opens. On the opposite carriageway to the right of the median, several trucks and cars move steadily as oncoming traffic with no direct effect on the ego path.", "hazard_reasoning": "There is a black SUV car slowing down in the ego lane because of the traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid rear-end collisions as traffic ahead is congested."}
{"id": "train_05661", "split": "train", "clip_key": "2020-0220-102630_120723_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "120723"}, "frames": ["2020-0220-102630_120723_movie_t-3.jpg", "2020-0220-102630_120723_movie_t-2.jpg", "2020-0220-102630_120723_movie_t-1.jpg", "2020-0220-102630_120723_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane per direction and a solid yellow centerline runs straight between low-rise buildings; the pavement is smooth and traffic is light to moderate. Ahead in the ego lane, a white scooter slows in front of the ego car because traffic is bunching farther ahead, so it sets the pace. In the opposing lane, a black sedan approaches and continues straight past, with a white van following it as oncoming traffic. A circular 30 speed-limit sign stands on the left, and a distant signalized intersection is visible ahead.", "hazard_reasoning": "There is a white scooter slowing down in the front of the ego-car, in the ego lane, because of traffic congestion ahead. Drivers should slow down to maintain a safe distance and avoid colliding with the decelerating scooter."}
{"id": "train_05662", "split": "train", "clip_key": "titan_clip_1293_000258_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1293_000258_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1293_000258_movie_t-3_augB1.jpg", "titan_clip_1293_000258_movie_t-2_augB1.jpg", "titan_clip_1293_000258_movie_t-1_augB1.jpg", "titan_clip_1293_000258_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A compact urban street with shops and apartments lines a narrow two-way road without a centerline; the pavement appears smooth and traffic is light. The ego vehicle proceeds along the left side with no median. A pedestrian wearing white pants and carrying an umbrella emerges from the left sidewalk and crosses directly in front of the ego car toward the right curb, briefly occupying its path. A white kei van is stopped at the right curb ahead, protruding slightly into the roadway but not blocking the left side. Farther ahead another small van pauses near the middle, while several bicycles remain parked outside the convenience store on the left.", "hazard_reasoning": "There is a pedestrian wearing white pants and carrying an umbrella, crossing the street from the left side, in front of the ego car. The driver should slow down to avoid a potential collision since the pedestrian may step into the vehicle's path unexpectedly."}
{"id": "train_05663", "split": "train", "clip_key": "2020-0131-135401_002303_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "002303"}, "frames": ["2020-0131-135401_002303_movie_t-3.jpg", "2020-0131-135401_002303_movie_t-2.jpg", "2020-0131-135401_002303_movie_t-1.jpg", "2020-0131-135401_002303_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban, narrow two-way street with one lane per direction and a solid yellow centerline appears well paved, and traffic is light with the ego vehicle momentarily halted. A white box truck directly ahead in the ego lane is stopped, blocking the path and constraining the ego's movement. A pedestrian on the left sidewalk walks past storefronts without approaching the roadway. A painted bicycle advisory lane runs along the left curb, while parked bicycles and utility poles tighten roadside clearance, and no oncoming vehicles are visible.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The truck's brake lights indicate it is stationary ahead, so you must stop to avoid a collision."}
{"id": "train_05664", "split": "train", "clip_key": "2020-0131-135401_018000_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "018000"}, "frames": ["2020-0131-135401_018000_movie_t-3.jpg", "2020-0131-135401_018000_movie_t-2.jpg", "2020-0131-135401_018000_movie_t-1.jpg", "2020-0131-135401_018000_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road approaches a signalized intersection beneath an elevated roadway, with smooth pavement, a blue bike lane on the left, and light traffic queuing. A black van ahead in the ego lane is stopped at the red traffic light, holding the ego vehicle in place. A white sedan slightly ahead in the left lane slows to a stop in its line. Several cyclists ride forward in the bike lane to the left, traveling parallel to traffic and staying within their lane. Overhead signals display red for through movements at the junction.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, because of the red traffic light. You should stop because the vehicle ahead is halted at a red light, requiring you to brake to avoid a collision."}
{"id": "train_05665", "split": "train", "clip_key": "2020-0207-101955_087487_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "087487"}, "frames": ["2020-0207-101955_087487_movie_t-3.jpg", "2020-0207-101955_087487_movie_t-2.jpg", "2020-0207-101955_087487_movie_t-1.jpg", "2020-0207-101955_087487_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs beneath elevated expressways, with three same-direction lanes and smooth pavement approaching a wide junction; traffic is light to moderate and steady. A blue truck ahead in the ego lane drives straight and gradually pulls away from the ego car. A large silver box truck to the left travels parallel in the adjacent lane at a similar speed, remaining in its lane. Another box truck on the right proceeds straight in its own lane without encroaching on the ego lane. No signals or obstacles are visibly constraining movement, and visibility is clear under the flyovers.", "hazard_reasoning": "There is a blue truck driving in front of the ego car, in the ego lane, away from the ego car. The red traffic light ahead indicates the lead vehicle will stop, so following it helps maintain a safe distance and avoid running the red signal."}
{"id": "train_05666", "split": "train", "clip_key": "2020-0228-102841_001738_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "001738"}, "frames": ["2020-0228-102841_001738_movie_t-3.jpg", "2020-0228-102841_001738_movie_t-2.jpg", "2020-0228-102841_001738_movie_t-1.jpg", "2020-0228-102841_001738_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way residential street with no centerline and dry pavement runs between close buildings, and traffic is light with no median. The ego vehicle proceeds along the left side of the road. A black minivan ahead in the ego lane slows, constraining the ego car's pace. A pedestrian on the right edge walks forward along the curb near the travel lane and may step toward the path. A round 30 speed-limit sign is posted on the left. A blue car is parked by the left-side junction and other curbside items leave a tight passage.", "hazard_reasoning": "There is a black minivan slowing in the ego lane, in front of the ego car. The minivan's deceleration may require sudden braking by the driver, so they should reduce speed to maintain a safe following distance."}
{"id": "train_05667", "split": "train", "clip_key": "titan_clip_755_000096_movie", "source": {"subset": "titan", "scenario": "clip_755", "frame": "000096"}, "frames": ["titan_clip_755_000096_movie_t-3.jpg", "titan_clip_755_000096_movie_t-2.jpg", "titan_clip_755_000096_movie_t-1.jpg", "titan_clip_755_000096_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way road without a centerline runs through a commercial district, with smooth pavement and light traffic; the left-side travel space narrows beside a curbside work area. A black flatbed truck is stopped on the left ahead beside orange traffic cones lined up along the curb, protruding slightly into the ego lane and constraining the path. Several pedestrians are ahead near mid-block, some stepping from the left toward the right across the roadway and potentially entering the ego lane. A bicyclist rides ahead near the center of the lane in the same direction, moving slowly and likely to set the pace.", "hazard_reasoning": "There are orange traffic cones lined up on the left side of the road. These cones indicate a construction or lane narrowing hazard, so the driver should carefully manoeuvre around them to avoid collision."}
{"id": "train_05668", "split": "train", "clip_key": "titan_clip_210_000126_movie", "source": {"subset": "titan", "scenario": "clip_210", "frame": "000126"}, "frames": ["titan_clip_210_000126_movie_t-3.jpg", "titan_clip_210_000126_movie_t-2.jpg", "titan_clip_210_000126_movie_t-1.jpg", "titan_clip_210_000126_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with a single lane per direction and no median is shown, the pavement dry and marked with a large 30; traffic is light and moves slowly. A silver van ahead in the ego lane proceeds near the center and sets the pace. A black minivan is stopped along the left curb close to the ego vehicle, reducing clearance as it is passed. Ahead on the right side, a man wearing a striped T-shirt and black pants walks along the curb in front of the ego car, close to the roadway and potentially entering the lane.", "hazard_reasoning": "There is a man, wearing a striped t-shirt and black pants, walking in front of the ego car to the right side of the road. He may step into the vehicle's path, so manoeuvre carefully around the pedestrian to avoid collision."}
{"id": "train_05669", "split": "train", "clip_key": "2020-0129-144857_087495_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "087495"}, "frames": ["2020-0129-144857_087495_movie_t-3.jpg", "2020-0129-144857_087495_movie_t-2.jpg", "2020-0129-144857_087495_movie_t-1.jpg", "2020-0129-144857_087495_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way arterial with one lane per direction runs straight on dry, well-kept pavement, divided by a solid yellow centerline and a right-side guardrail; traffic is moderate with a slight queue ahead. A minivan further ahead in the ego lane slows because of congestion, setting the ego-car's pace. A small white hatchback directly ahead of the ego also eases off to follow the minivan at a safe gap. Oncoming cars travel steadily in the opposite lane to the right, passing without interference. On the roadside to the right beyond the guardrail, a dark car is parked in a bay and a large box truck stands farther along, both outside the lane. A pedestrian overpass spans the road.", "hazard_reasoning": "There is a gray minivan slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should follow the vehicle ahead to maintain a safe distance and adapt to the reduced speed of the traffic flow."}
{"id": "train_05670", "split": "train", "clip_key": "2020-0217-110854_071572_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "071572"}, "frames": ["2020-0217-110854_071572_movie_t-3.jpg", "2020-0217-110854_071572_movie_t-2.jpg", "2020-0217-110854_071572_movie_t-1.jpg", "2020-0217-110854_071572_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with left-hand traffic runs between tree-lined sidewalks and storefronts, the lanes divided by a wide painted median with chevrons; the pavement is dry and smooth, and overall flow is light to moderate with brief slowing. A white truck directly ahead in the ego lane slows because vehicles are queuing farther up the road, constraining the ego car's pace. Farther ahead in the same direction, several cars also move slowly toward the cluster, sustaining the congestion. Oncoming traffic in the opposite lanes to the right proceeds steadily without interacting with the ego path. Parked vehicles line the curbside outside the travel lane.", "hazard_reasoning": "There's a white truck slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to reduced speeds caused by congestion."}
{"id": "train_05671", "split": "train", "clip_key": "2020-0206-142535_030606_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "030606"}, "frames": ["2020-0206-142535_030606_movie_t-3.jpg", "2020-0206-142535_030606_movie_t-2.jpg", "2020-0206-142535_030606_movie_t-1.jpg", "2020-0206-142535_030606_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of cyclist.", "environment_perception": "An urban multi-lane two-way arterial with no physical median and smooth pavement leads to a wide signalized intersection; traffic is light and the ego vehicle is stopped at the crosswalk. On the left curb at the stop line, a cyclist wearing a backpack waits along the left edge of the road, positioned to continue straight and possibly merge ahead when we move. A cluster of pedestrians stands on the left corner and along the sidewalk, waiting to cross the zebra crossing. The intersection is signal controlled, with the pedestrian signal on the left showing red.", "hazard_reasoning": "A cyclist wearing a backpack is cycling along the left side of the road. The cyclist could move into the vehicle's path unexpectedly, so you should be cautious to avoid collision."}
{"id": "train_05672", "split": "train", "clip_key": "2020-0205-103411_011766_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "011766"}, "frames": ["2020-0205-103411_011766_movie_t-3.jpg", "2020-0205-103411_011766_movie_t-2.jpg", "2020-0205-103411_011766_movie_t-1.jpg", "2020-0205-103411_011766_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban downtown scene shows a two-lane road in our direction with smooth pavement approaching a signalized intersection, and traffic is moderate and comes to a halt. A black sedan directly ahead in the ego lane is stopped at the red light, holding our position. A silver van slightly ahead in the adjacent left lane also waits at the stop line, occupying the space beside us. Two cyclists on the right ride across the intersection along the crosswalk from right to left in front of us. A white van and other cross-traffic vehicles continue through the junction from right to left while our signal remains red.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver needs to stop to avoid rear-ending the halted sedan at the red light."}
{"id": "train_05673", "split": "train", "clip_key": "2020-0204-150838_061802_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_061802_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_061802_movie_t-3_augB1.jpg", "2020-0204-150838_061802_movie_t-2_augB1.jpg", "2020-0204-150838_061802_movie_t-1_augB1.jpg", "2020-0204-150838_061802_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated expressway with smooth asphalt and no visible median, and traffic is heavy and slow-moving. A large white box truck is directly ahead in the ego lane, creeping and setting the pace. On the left side, a gray van cuts in ahead as it merges into the ego lane, entering the ego vehicle's path. To the right, slow-moving same-direction traffic including a dark heavy truck and a silver hatchback runs parallel close by, restricting room to change lanes. An overhead blue guide sign shows directions toward Chiba and Tatsumi.", "hazard_reasoning": "There is a gray van cutting in from the left side of the road, in front of the ego car, because it is merging into the ego lane. The driver should slow down to maintain a safe distance as the van merges and avoid a collision."}
{"id": "train_05674", "split": "train", "clip_key": "2020-0207-101955_089883_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "089883"}, "frames": ["2020-0207-101955_089883_movie_t-3.jpg", "2020-0207-101955_089883_movie_t-2.jpg", "2020-0207-101955_089883_movie_t-1.jpg", "2020-0207-101955_089883_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban roadway carries three same-direction lanes with metal and concrete barriers; the pavement is mostly smooth with visible cracks near the right lane, and traffic flows light to moderate. A black mini-van ahead to the left cruises in the left lane and holds its line without moving toward the ego lane. A small white van farther ahead in the center lane maintains speed and keeps a clear gap ahead of the ego vehicle. A large white box truck farther ahead in the right lane travels steadily along the wall with several vehicles following, not impeding the ego lane. An overhead blue direction sign and an electronic message board are visible above the lanes.", "hazard_reasoning": "No caption provided. No potential hazards are detected in this clear roadway; continue maintaining lane position and monitor traffic."}
{"id": "train_05675", "split": "train", "clip_key": "titan_clip_293_000048_movie", "source": {"subset": "titan", "scenario": "clip_293", "frame": "000048"}, "frames": ["titan_clip_293_000048_movie_t-3.jpg", "titan_clip_293_000048_movie_t-2.jpg", "titan_clip_293_000048_movie_t-1.jpg", "titan_clip_293_000048_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist on left side.", "environment_perception": "A narrow urban back street with closely spaced buildings forms a two-way road without a centerline; the pavement looks smooth and traffic is light as the ego vehicle rolls forward from a small intersection. Ahead on the left side, a cyclist in a white shirt rides toward the ego vehicle along the curb, approaching the ego path and constraining speed. Several bicycles are parked along the right curb near shopfronts, slightly narrowing the available space.", "hazard_reasoning": "There is a cyclist wearing a white shirt and cycling toward the ego car, on the left side of the road. The cyclist may enter the vehicle's path if not noticed, so the driver should be aware."}
{"id": "train_05676", "split": "train", "clip_key": "2020-0210-101957_005113_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "005113"}, "frames": ["2020-0210-101957_005113_movie_t-3.jpg", "2020-0210-101957_005113_movie_t-2.jpg", "2020-0210-101957_005113_movie_t-1.jpg", "2020-0210-101957_005113_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the white van", "environment_perception": "An urban two-way street with one lane per direction curves gently right, divided by double yellow lines on smooth pavement; traffic appears light, with several oncoming cars visible. A white van is parked along the left edge ahead, slightly intruding into the ego lane and narrowing the path in front of the ego car. Beyond it, more cars stand along the left curb in the same direction, continuing the narrow corridor. Two pedestrians walk on the left sidewalk near a convenience store entrance and remain off the roadway. In the opposite lane, a small queue of cars approaches through the bend, and the centerline prevents overtaking around the parked van.", "hazard_reasoning": "There is a white van parked to the left of the ego lane in front of the ego car. This parked vehicle encroaches on the travel lane and may obstruct the path, so the driver should carefully manoeuvre around it."}
{"id": "train_05677", "split": "train", "clip_key": "2020-0220-151845_053220_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "053220"}, "frames": ["2020-0220-151845_053220_movie_t-3.jpg", "2020-0220-151845_053220_movie_t-2.jpg", "2020-0220-151845_053220_movie_t-1.jpg", "2020-0220-151845_053220_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated roadway with two same-direction lanes runs under a flyover, bounded by concrete barriers; the pavement is dry and traffic is light to moderate. A pink truck directly ahead in the left ego lane slows, constraining the ego car's pace. In the adjacent right lane, a silver hatchback continues ahead at a similar speed and stays in its lane, leaving little room for a lane change. No salient signals or signs are visible, and there are no pedestrians or cyclists as the vehicles proceed under the structure.", "hazard_reasoning": "There is a pink truck slowing in front of the ego car, in the ego lane. The truck's deceleration could require the driver to reduce speed promptly to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_05678", "split": "train", "clip_key": "2020-0226-140503_080036_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "080036"}, "frames": ["2020-0226-140503_080036_movie_t-3.jpg", "2020-0226-140503_080036_movie_t-2.jpg", "2020-0226-140503_080036_movie_t-1.jpg", "2020-0226-140503_080036_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban arterial with multiple marked lanes runs straight with a slight right bend; the pavement is in good condition, a short raised divider lines the right edge, and traffic is heavy and slow. A white hatchback directly ahead in the ego lane is stopped with brake lights on because congestion stretches forward, holding the ego vehicle. To the left, a large box truck in the adjacent same-direction lane creeps forward alongside at low speed. Farther ahead, a long queue of same-direction cars inches toward a distant signalized junction, constraining the overall pace. On the far right beyond the divider, a light truck moves slowly near a side lane.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car because of traffic congestion ahead. The driver must stop to avoid colliding with this halted vehicle."}
{"id": "train_05679", "split": "train", "clip_key": "2020-0218-103119_010060_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0218-103119_010060_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0218-103119_010060_movie_t-3_augB1.jpg", "2020-0218-103119_010060_movie_t-2_augB1.jpg", "2020-0218-103119_010060_movie_t-1_augB1.jpg", "2020-0218-103119_010060_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban street with a single lane in the ego direction approaches a signalized intersection, with dry pavement and light traffic and no median. A box truck is stopped directly ahead in the ego lane near the crosswalk, constraining the ego vehicle's pace. A pedestrian wearing a black sweater is in the middle of the road ahead, moving from the right toward the ego vehicle's path and crossing in front of the truck. Another pedestrian stands at the right edge near the curb, walking along the roadside without entering the lane.", "hazard_reasoning": "There is a pedestrian wearing a black sweater, crossing the street in the middle of the road, towards the ego car. The driver must stop to avoid colliding with the pedestrian crossing ahead."}
{"id": "train_05680", "split": "train", "clip_key": "titan_clip_1050_000156_movie", "source": {"subset": "titan", "scenario": "clip_1050", "frame": "000156"}, "frames": ["titan_clip_1050_000156_movie_t-3.jpg", "titan_clip_1050_000156_movie_t-2.jpg", "titan_clip_1050_000156_movie_t-1.jpg", "titan_clip_1050_000156_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban backstreet with narrow two-way traffic appears, a single lane each way without a median and smooth pavement, and overall flow is light. Ahead in the ego direction, a white van is stopped near the left curb and partly occupies the lane, narrowing the passage and setting the pace. On the left side of the roadway, a pedestrian in a white shirt and blue pants walks toward the ego vehicle along the edge to get around the parked van and may encroach on the lane. On the right, a man in a white shirt and dark trousers walks diagonally across toward the left ahead of the car.", "hazard_reasoning": "There is a pedestrian in white shirt and blue pants, walking toward the ego car, on the left side of the road because of the parked vehicle. The pedestrian may step into the lane unexpectedly to navigate around the parked vehicle, posing a collision risk if not noticed. Driver should be aware to avoid a potential accident."}
{"id": "train_05681", "split": "train", "clip_key": "titan_clip_1234_000048_movie", "source": {"subset": "titan", "scenario": "clip_1234", "frame": "000048"}, "frames": ["titan_clip_1234_000048_movie_t-3.jpg", "titan_clip_1234_000048_movie_t-2.jpg", "titan_clip_1234_000048_movie_t-1.jpg", "titan_clip_1234_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban side street climbs uphill with a single shared lane and no median; the worn pavement and curbside loading make traffic light but slow. Ahead in the lane, a small group of pedestrians walks uphill near the center, constraining the ego vehicle's pace. On the left edge, a pedestrian in a black shirt and pants carrying a bag walks toward the ego car and approaches the travel path. On the right ahead, a dark van is stopped with rear doors open while a worker crouches by the curb, partially narrowing the lane, and a white truck is parked near the camera along the right side.", "hazard_reasoning": "There is a male pedestrian wearing a black shirt, black pants, and carrying a bag, walking on the left side of the road, toward the ego car. Since the pedestrian is approaching the vehicle and may step onto the roadway, manoeuvre carefully to avoid collision."}
{"id": "train_05682", "split": "train", "clip_key": "titan_clip_856_000072_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_856_000072_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_856_000072_movie_t-3_augB1.jpg", "titan_clip_856_000072_movie_t-2_augB1.jpg", "titan_clip_856_000072_movie_t-1_augB1.jpg", "titan_clip_856_000072_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street has a single narrow shared lane with block-paved surface and a zebra crosswalk in the foreground; there is no median, and no motor vehicles are visible, so vehicle flow is light while pedestrian activity is heavy. On the right at the crosswalk, a group wearing black pants and black T-shirts walks away from the ego vehicle in the roadway, jaywalking near the crosswalk and occupying part of the lane. Ahead along the left edge, two pedestrians walk away in the same direction near the lane boundary, close to the ego path. Farther ahead in the center, several other pedestrians walk and cross casually, keeping the lane crowded. A roadside sign prohibits parking, and shops line both sides.", "hazard_reasoning": "There are a group of pedestrians wearing black pants and black t-shirts, and walking on the right side of the road, away from the ego car, because they are jaywalking near a pedestrian crosswalk. The driver should slow down because jaywalking pedestrians may unexpectedly enter the vehicle's path."}
{"id": "train_05683", "split": "train", "clip_key": "titan_clip_1109_000144_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1109_000144_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1109_000144_movie_t-3_augB1.jpg", "titan_clip_1109_000144_movie_t-2_augB1.jpg", "titan_clip_1109_000144_movie_t-1_augB1.jpg", "titan_clip_1109_000144_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for crossing pedestrian", "environment_perception": "A narrow urban side street with smooth asphalt and no centerline runs between mid-rise buildings, with curbside parking and light traffic. A pedestrian in a blue shirt crosses left to right directly ahead of the ego vehicle, traversing the travel lane and occupying its path. Two pedestrians on the right sidewalk walk near a cafe entrance, moving parallel to traffic and staying near the curb. A small white car far ahead in the same direction proceeds straight without visible change in speed. Parked vans on the left and bicycles racked on the right narrow the lane and partially block sightlines at the edges.", "hazard_reasoning": "There is a pedestrian in blue shirt, crossing the street in front of the ego car, from the left side to the right side. The driver should slow down because the pedestrian is entering the vehicle's path and could step into its lane unexpectedly."}
{"id": "train_05684", "split": "train", "clip_key": "2020-0206-142535_000724_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "000724"}, "frames": ["2020-0206-142535_000724_movie_t-3.jpg", "2020-0206-142535_000724_movie_t-2.jpg", "2020-0206-142535_000724_movie_t-1.jpg", "2020-0206-142535_000724_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction runs between midrise buildings, the pavement smooth and traffic light near an intersection. A black vehicle directly ahead in the ego lane is stopped and holds our pace because a red traffic light ahead halts the queue. An oncoming white box truck approaches in the opposite lane to the right of the ego vehicle and continues past without encroaching. A couple of pedestrians stand on the left sidewalk by the shops, waiting and not moving toward the road.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to avoid colliding with the stationary vehicle and comply with the red signal."}
{"id": "train_05685", "split": "train", "clip_key": "2020-0129-105040_009575_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "009575"}, "frames": ["2020-0129-105040_009575_movie_t-3.jpg", "2020-0129-105040_009575_movie_t-2.jpg", "2020-0129-105040_009575_movie_t-1.jpg", "2020-0129-105040_009575_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided roadway with multiple same-direction lanes and a planted median on the right is shown; the pavement is dry and smooth, and traffic flow is light to moderate. A white box truck ahead in the ego lane drives away from the camera, gradually opening the gap while leading the ego vehicle and limiting forward view. A blue utility truck in the adjacent left lane travels roughly alongside at a similar pace, reducing space for a lane change. Across the median, oncoming vehicles move along the opposite carriageway separately from the ego's path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05686", "split": "train", "clip_key": "2020-0204-150838_051290_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "051290"}, "frames": ["2020-0204-150838_051290_movie_t-3.jpg", "2020-0204-150838_051290_movie_t-2.jpg", "2020-0204-150838_051290_movie_t-1.jpg", "2020-0204-150838_051290_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial runs beneath elevated expressway structures, the pavement is smooth and dry, and traffic is heavy and slow. The ego vehicle travels in the center lane. A white box truck directly ahead in the ego lane is stopped because of congestion and blocks the ego's path. In the left lane, several small trucks queue beside the ego, inching forward in the same direction. In the right lane, a white minivan ahead proceeds slowly in its lane.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid colliding with the stationary truck and maintain a safe distance."}
{"id": "train_05687", "split": "train", "clip_key": "2020-0213-143552_019996_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_019996_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_019996_movie_t-3_augB1.jpg", "2020-0213-143552_019996_movie_t-2_augB1.jpg", "2020-0213-143552_019996_movie_t-1_augB1.jpg", "2020-0213-143552_019996_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth dry pavement runs between tall buildings, with red bollards separating a bus-priority lane on the right; traffic flows slowly in a short queue. A white truck directly ahead in the ego lane slows because congestion is visible ahead, and it sets the ego vehicle's pace. Farther ahead in the adjacent left lane, a large white box truck creeps forward, limiting an easy lane change. A silver hatchback to the front-left rolls alongside at low speed without signaling. On the far right, a cyclist on the sidewalk rides parallel to traffic and remains outside the roadway, while overhead signage shows a bus symbol consistent with the separated lane.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane, because there is traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a rear-end collision in the congested traffic."}
{"id": "train_05688", "split": "train", "clip_key": "2020-0207-151349_006842_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "006842"}, "frames": ["2020-0207-151349_006842_movie_t-3.jpg", "2020-0207-151349_006842_movie_t-2.jpg", "2020-0207-151349_006842_movie_t-1.jpg", "2020-0207-151349_006842_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "be aware of cyclist ahead", "environment_perception": "An urban two-way side street approaches a signalized intersection with no median and dry, smooth pavement; traffic is light and the view opens onto a wider cross street. Ahead, a cyclist wearing a face mask rides across the zebra crossing from right to left in front of the ego lane, directly occupying the path and slowing the approach. On the right side of the cross street, a white van proceeds through the junction across the ego vehicle's front, continuing along its lane. Far left beyond the intersection, another white van is stopped at the curb near the corner and remains stationary. A pedestrian stands on the far-right sidewalk by the shuttered shop, waiting near the crosswalk but not stepping off. The overhead traffic signal facing the ego direction shows red.", "hazard_reasoning": "A cyclist wearing a face mask is cycling along the left side of the road, toward the ego car. The cyclist's movement across the intersection could intersect the vehicle's path, so the driver should be aware of the cyclist ahead."}
{"id": "train_05689", "split": "train", "clip_key": "titan_clip_14_000474_movie", "source": {"subset": "titan", "scenario": "clip_14", "frame": "000474"}, "frames": ["titan_clip_14_000474_movie_t-3.jpg", "titan_clip_14_000474_movie_t-2.jpg", "titan_clip_14_000474_movie_t-1.jpg", "titan_clip_14_000474_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street has a single narrow shared lane paved with bricks, no divider, and a smooth surface; motor traffic is light and the car proceeds slowly amid pedestrians. Near the right front, a pedestrian wearing a blue T-shirt and black pants stands in the middle of the road facing left, occupying the ego lane. Farther ahead in the center, another person stands still, and several pedestrians ahead walk along or cross between the shopfronts, loosely dispersed in the lane. On the right, a recessed driveway or parking-garage entrance opens onto the roadway, while a bicycle is parked by a storefront on the left. No traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt and black pants, standing in the middle of the road. The driver should slow down to maintain a safe distance and avoid a collision with the pedestrian."}
{"id": "train_05690", "split": "train", "clip_key": "2020-0220-102630_121051_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "121051"}, "frames": ["2020-0220-102630_121051_movie_t-3.jpg", "2020-0220-102630_121051_movie_t-2.jpg", "2020-0220-102630_121051_movie_t-1.jpg", "2020-0220-102630_121051_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane per direction runs past shops and apartments, marked by a yellow centerline and no physical median; pavement is smooth and traffic is light overall, though the ego lane pauses while the oncoming lane remains mostly clear. A black hatchback directly ahead in the ego lane is stopped because of traffic congestion ahead, constraining the ego vehicle's pace. Several pedestrians on the left sidewalk walk past storefronts and bicycle racks, staying on the sidewalk. Parked cars sit in bays on the right, clear of the travel lane.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain safe distance and avoid collision with the halted vehicle due to congestion."}
{"id": "train_05691", "split": "train", "clip_key": "titan_clip_207_000396_movie", "source": {"subset": "titan", "scenario": "clip_207", "frame": "000396"}, "frames": ["titan_clip_207_000396_movie_t-3.jpg", "titan_clip_207_000396_movie_t-2.jpg", "titan_clip_207_000396_movie_t-1.jpg", "titan_clip_207_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians on the left side", "environment_perception": "An urban commercial street with a single narrow one-way lane and no median stretches ahead; the asphalt appears smooth and traffic is light. A small white van travels ahead in the ego lane, moving away and effectively setting the pace. On the left side, two women carrying handbags and umbrellas walk away from the ego car along the curb, close to the roadway and potentially entering the lane. Farther ahead on the right, a cyclist rides away near the curb and may merge toward the center. Other pedestrians remain on the sidewalks. A blue one-way arrow sign on the left confirms the direction of travel, and short bollards on the right tighten the roadway near shopfronts.", "hazard_reasoning": "There are two women carrying handbags and umbrellas, and walking away from the ego car, on the left side of the road. The driver should be aware of pedestrians potentially crossing the street unexpectedly."}
{"id": "train_05692", "split": "train", "clip_key": "titan_clip_431_000534_movie", "source": {"subset": "titan", "scenario": "clip_431", "frame": "000534"}, "frames": ["titan_clip_431_000534_movie_t-3.jpg", "titan_clip_431_000534_movie_t-2.jpg", "titan_clip_431_000534_movie_t-1.jpg", "titan_clip_431_000534_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban two-lane two-way street runs between mid-rise buildings with smooth pavement and moderate, steady oncoming flow. On the left just ahead, a silver van is stopped partly in the ego lane with its side door open, and a pedestrian in a striped T-shirt and black pants walks away in the middle of the road while attending to that vehicle, momentarily blocking the ego path. Slightly farther ahead in the same lane, a blue car is pulled over and waits near the curb, narrowing the passage. In the opposite lane, a black sedan approaches at low speed toward the camera, limiting room for the ego vehicle to maneuver around the roadside obstruction.", "hazard_reasoning": "There is a pedestrian wearing a striped t-shirt and black pants, walking in the middle of the road, away from the ego car, because they are attending their vehicle. The pedestrian's position in the travel lane poses a collision risk, so the driver should manoeuvre carefully around them."}
{"id": "train_05693", "split": "train", "clip_key": "2020-0226-101332_002136_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "002136"}, "frames": ["2020-0226-101332_002136_movie_t-3.jpg", "2020-0226-101332_002136_movie_t-2.jpg", "2020-0226-101332_002136_movie_t-1.jpg", "2020-0226-101332_002136_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road without a median curves slightly left, the pavement damp and traffic light to moderate as the view approaches a signalized intersection. On the left ahead, a tall-load flatbed truck with a black minivan stopped behind it occupies the curbside and encroaches into the travel lane, narrowing the path. Farther ahead in the same direction, a small box truck proceeds toward the intersection and sets the pace. On the right near the curb, a white van is stopped at the edge of the roadway and may pull into the lane. A no-parking sign stands on the left.", "hazard_reasoning": "No immediate hazards detected; however, the partially obstructed view behind the truck may hide other vehicles or obstacles, so stay alert."}
{"id": "train_05694", "split": "train", "clip_key": "titan_clip_433_000042_movie", "source": {"subset": "titan", "scenario": "clip_433", "frame": "000042"}, "frames": ["titan_clip_433_000042_movie_t-3.jpg", "titan_clip_433_000042_movie_t-2.jpg", "titan_clip_433_000042_movie_t-1.jpg", "titan_clip_433_000042_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with interlocking brick pavement and no median runs between buildings, with a construction fence on the right; traffic is very light and mostly pedestrian, and no signals are visible. Ahead on the left, a woman in a striped shirt and black shorts carrying an umbrella walks from the left side toward the right to get around a white van parked along the curb, potentially entering the ego path. Farther ahead on the right edge, a man walks away from the camera in the lane, keeping near the curb. In the distance near midlane, another pedestrian crosses to the right. A parked white van partly narrows the lane on the left, and cones line the work zone by the right fence.", "hazard_reasoning": "There is a woman wearing a striped shirt and black shorts, carrying an umbrella, and walking on the left side of the road, towards the right side because of the parked vehicle. The pedestrian is stepping into the driving lane due to the obstruction, so you should slow down to maintain a safe distance."}
{"id": "train_05695", "split": "train", "clip_key": "titan_clip_40_000102_movie", "source": {"subset": "titan", "scenario": "clip_40", "frame": "000102"}, "frames": ["titan_clip_40_000102_movie_t-3.jpg", "titan_clip_40_000102_movie_t-2.jpg", "titan_clip_40_000102_movie_t-1.jpg", "titan_clip_40_000102_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "In an urban shopping district, the ego vehicle proceeds along a narrow single-lane shared street paved with blocks, with no divider and light, slow traffic. A pedestrian wearing a blue T-shirt and black pants walks ahead on the right side away from the ego car, close to the storefronts and near the vehicle's path. Farther ahead in the middle of the lane, a small white van moves away at low speed and effectively sets the pace. Several other pedestrians on the right margin walk in the same direction beside the travel lane, influencing spacing. On the left, people stand by shop entrances. Sandwich boards and posts line the edges, slightly narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt and black pants, walking on the right side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to maintain a safe distance and avoid any sudden movements."}
{"id": "train_05696", "split": "train", "clip_key": "2020-0210-155354_032185_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "032185"}, "frames": ["2020-0210-155354_032185_movie_t-3.jpg", "2020-0210-155354_032185_movie_t-2.jpg", "2020-0210-155354_032185_movie_t-1.jpg", "2020-0210-155354_032185_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction and opposing lanes to the right shows clean pavement and heavy stop-and-go flow. Directly ahead in the left ego lane, a black sedan is stopped because congestion builds further ahead, keeping the ego car stationary. Slightly ahead to the right, a white van in the adjacent same-direction lane inches forward behind other queued vehicles, limiting any opportunity to merge. Along the left curb beside the ego vehicle, a large white truck stands still, narrowing the available space. Oncoming traffic in the far-right lanes moves slowly past in the opposite direction.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid rear-ending the halted sedan and maintain safe distance under these congestion conditions."}
{"id": "train_05697", "split": "train", "clip_key": "2020-0204-150838_032530_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "032530"}, "frames": ["2020-0204-150838_032530_movie_t-3.jpg", "2020-0204-150838_032530_movie_t-2.jpg", "2020-0204-150838_032530_movie_t-1.jpg", "2020-0204-150838_032530_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban arterial with multiple same-direction lanes and painted dividers runs between tall buildings; the pavement is dry and traffic is heavy and slow. A white van stops directly ahead in the ego lane because congestion stacks up in front, blocking the ego vehicle's path. To the left, a black taxi creeps alongside in the neighboring lane, narrowing the gap and discouraging a lane change. Slightly ahead in the left-adjacent lane, a white minivan inches forward parallel to the queue, remaining close to the van ahead. In the right-adjacent lane a dark wagon advances slowly past the line but stays within its lane and does not cut in.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle and because the congestion may delay its restart."}
{"id": "train_05698", "split": "train", "clip_key": "2020-0204-150838_034419_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_034419_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_034419_movie_t-3_augB1.jpg", "2020-0204-150838_034419_movie_t-2_augB1.jpg", "2020-0204-150838_034419_movie_t-1_augB1.jpg", "2020-0204-150838_034419_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban multi-lane two-way avenue with smooth pavement and no physical median carries heavy, stop-and-go traffic toward a signalized intersection ahead. Directly ahead in the ego lane, a white van slows with brake lights illuminated in a queue, constraining the ego vehicle's pace because of traffic congestion. In the adjacent same-direction lane on the left, a dark van creeps forward alongside, occupying the space next to the ego car and moving at a similar slow pace. On the right side of the roadway, an oncoming white van proceeds through the junction in its lane without interacting with the ego vehicle. Overhead traffic lights are visible at the intersection.", "hazard_reasoning": "There is a white van slowing in front of the ego car in the ego lane, because of traffic congestion. You should slow down to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_05699", "split": "train", "clip_key": "titan_clip_1159_000360_movie", "source": {"subset": "titan", "scenario": "clip_1159", "frame": "000360"}, "frames": ["titan_clip_1159_000360_movie_t-3.jpg", "titan_clip_1159_000360_movie_t-2.jpg", "titan_clip_1159_000360_movie_t-1.jpg", "titan_clip_1159_000360_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow two-way urban street with one lane in each direction, no median, and slightly worn pavement stretches ahead; the ego vehicle proceeds in the left lane and traffic is light. On the right side near mid-distance, a pedestrian in a black suit carrying a handbag waits at the curb to cross toward the left where no crosswalk is visible, and may enter the ego lane. A red truck is stopped at the right curb close to the camera, its body encroaching slightly into the roadway and tightening clearance. Cones, parked bicycles, and a scooter line the edges.", "hazard_reasoning": "There is a pedestrian wearing a black suit, carrying a handbag, waiting to cross from the right side of the road to the left side, because there is no crosswalk. The pedestrian may step onto the road unexpectedly without a designated crossing, so the driver should stop to avoid a collision."}
{"id": "train_05700", "split": "train", "clip_key": "2020-0205-103411_064016_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "064016"}, "frames": ["2020-0205-103411_064016_movie_t-3.jpg", "2020-0205-103411_064016_movie_t-2.jpg", "2020-0205-103411_064016_movie_t-1.jpg", "2020-0205-103411_064016_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes and a planted center median is seen; the pavement is dry and smooth, and traffic is moderate, bunching at an intersection where overhead signals show red. In the ego lane directly ahead, a silver hatchback has stopped for the red light, holding the ego vehicle. In the adjacent lane ahead-right, a covered box truck slows to a stop for the same signal and queues near the intersection. In the far-right lane by the median, a small white car edges forward alongside while remaining in its lane without affecting the ego path.", "hazard_reasoning": "There is a silver hatchback that has stopped in front of the ego car in the ego lane, because of a red traffic light. The driver must stop to avoid colliding with the halted vehicle ahead."}
{"id": "train_05701", "split": "train", "clip_key": "titan_clip_937_000330_movie", "source": {"subset": "titan", "scenario": "clip_937", "frame": "000330"}, "frames": ["titan_clip_937_000330_movie_t-3.jpg", "titan_clip_937_000330_movie_t-2.jpg", "titan_clip_937_000330_movie_t-1.jpg", "titan_clip_937_000330_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully", "environment_perception": "A narrow urban residential two-way street with edge lines and smooth pavement, no median; traffic is light. On the right ahead, a flatbed truck is parked partly in the roadway, narrowing the ego lane and constraining pace. Beside it on the right, a pedestrian in a white shirt and brown pants stands attending the parked vehicle, staying close to the travel path. Farther ahead near the center of the road, another pedestrian walks away in the lane, reducing the passing gap. A red triangular stop sign is posted ahead on the left. A red delivery scooter is parked at the near right curb.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and brown pants, standing on the right side of the road, because they are attending their parked vehicle. The pedestrian may step into the traffic unexpectedly, so the driver should manoeuvre carefully around them."}
{"id": "train_05702", "split": "train", "clip_key": "2020-0227-153144_010225_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "010225"}, "frames": ["2020-0227-153144_010225_movie_t-3.jpg", "2020-0227-153144_010225_movie_t-2.jpg", "2020-0227-153144_010225_movie_t-1.jpg", "2020-0227-153144_010225_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban arterial with two same-direction lanes and a raised median with railings runs straight through a built-up area; the pavement is dry and the overall flow is light to moderate. A dark sedan ahead in the ego lane cruises and then eases off, constraining the ego car's pace. A small silver car is stopped at the left curb slightly ahead, waiting near the lane edge and potentially merging into the ego path. A few pedestrians move along the right sidewalk near shops but stay off the roadway. Roadside signs on the left indicate a 50 speed limit and a no-parking restriction, and overhead gantries span the road without a visible signal aspect.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The decelerating truck ahead may require the ego-vehicle to brake rapidly, so the driver should reduce speed to maintain a safe following distance."}
{"id": "train_05703", "split": "train", "clip_key": "titan_clip_276_000558_movie", "source": {"subset": "titan", "scenario": "clip_276", "frame": "000558"}, "frames": ["titan_clip_276_000558_movie_t-3.jpg", "titan_clip_276_000558_movie_t-2.jpg", "titan_clip_276_000558_movie_t-1.jpg", "titan_clip_276_000558_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban scene on a narrow two-way street with no median and smooth pavement; traffic is light. A white truck ahead on the left slows and steers toward the curb, parking in a designated space and briefly encroaching on the ego lane, which constrains our pace. No oncoming vehicles appear. On the right, several cars are stationary inside a pay parking lot and remain off the carriageway. A fenced construction site lines the right sidewalk with prominent P parking signs.", "hazard_reasoning": "There is a white truck parking in a designated parking spot on the left side of the road. This parked truck partially blocks the sidewalk view, reducing visibility and requiring the driver to manoeuvre carefully around it to avoid potential collisions."}
{"id": "train_05704", "split": "train", "clip_key": "2020-0228-150133_018755_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "018755"}, "frames": ["2020-0228-150133_018755_movie_t-3.jpg", "2020-0228-150133_018755_movie_t-2.jpg", "2020-0228-150133_018755_movie_t-1.jpg", "2020-0228-150133_018755_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with narrow lanes and no median, the ego car proceeds in the left lane on smooth asphalt while traffic is heavy and briefly halted. A gray van directly ahead in the ego lane is stopped because congestion blocks the lane, constraining the ego car. Farther ahead in the same lane, a large bus or truck is also stationary, causing the queue. No oncoming vehicles pass in view, and a side street opens to the right at the corner. A 40 speed limit sign and a no-parking sign stand on the left sidewalk.", "hazard_reasoning": "There is a gray van stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_05705", "split": "train", "clip_key": "2020-0227-104226_057803_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "057803"}, "frames": ["2020-0227-104226_057803_movie_t-3.jpg", "2020-0227-104226_057803_movie_t-2.jpg", "2020-0227-104226_057803_movie_t-1.jpg", "2020-0227-104226_057803_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction and a solid yellow centerline runs between low buildings; the pavement is dry and in good condition, and traffic is light. The ego travels in the left lane. Ahead in the ego lane, a blue sedan slows, constrained by a truck slowing farther ahead and thereby setting the ego vehicle's pace. A white car is parked in a recessed bay on the right and stays clear of the travel lane. The opposing lane shows no moving vehicles at this moment. A striped cone sits by the right curb, but it does not obstruct the roadway.", "hazard_reasoning": "There is a blue sedan slowing in front of the ego car, in the ego lane, because of a truck slowing ahead. The driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_05706", "split": "train", "clip_key": "2020-0127-132751_003517_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0127-132751_003517_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0127-132751_003517_movie_t-3_augB1.jpg", "2020-0127-132751_003517_movie_t-2_augB1.jpg", "2020-0127-132751_003517_movie_t-1_augB1.jpg", "2020-0127-132751_003517_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist movement", "environment_perception": "In an urban area, the ego vehicle follows a narrow two-way road that curves right beside a long construction fence; the asphalt looks wet and there is no moving traffic ahead. On the right ahead, several pedestrians stand and walk along the guardrailed edge of the work zone at the curve, close to the roadway and near the ego path. No other road users are visible in the lane or oncoming. A red-bordered circular sign on a pole stands by the site, and another circular prohibition sign appears farther right. The construction and right-hand curve create a narrowed, partially blind approach.", "hazard_reasoning": "a cyclist wearing a yellow t-shirt with black pant is cycling away from the ego car because of the construction on the right. The cyclist may swerve or slow unpredictably near the barriers, so the driver should be aware to anticipate these movements."}
{"id": "train_05707", "split": "train", "clip_key": "titan_clip_900_000372_movie", "source": {"subset": "titan", "scenario": "clip_900", "frame": "000372"}, "frames": ["titan_clip_900_000372_movie_t-3.jpg", "titan_clip_900_000372_movie_t-2.jpg", "titan_clip_900_000372_movie_t-1.jpg", "titan_clip_900_000372_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow lane paved with blocks and no divider is constrained by parked vehicles, so traffic is light and slow. Ahead on the left, a pedestrian wearing a black shirt and a cap walks away from the ego vehicle along the roadway because a small truck is parked on the sidewalk, and he may briefly occupy the travel path. On the right edge, two pedestrians approach near the curb but remain out of the lane. Farther ahead, scattered pedestrians continue along both sides without entering the path. A white van is parked very close on the left foreground and the truck on the left farther ahead partially intrudes into the lane, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and a cap walking away from the ego car on the left side of the road because of the truck parked on the sidewalk. Driver should slow down because the pedestrian may step into the roadway unexpectedly due to limited sidewalk space."}
{"id": "train_05708", "split": "train", "clip_key": "2020-0225-102455_024557_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "024557"}, "frames": ["2020-0225-102455_024557_movie_t-3.jpg", "2020-0225-102455_024557_movie_t-2.jpg", "2020-0225-102455_024557_movie_t-1.jpg", "2020-0225-102455_024557_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A busy urban two-way arterial with a painted double-line median and smooth pavement carries heavy, slow-moving traffic. In the ego lane ahead, a silver sedan slows because of congestion further up the road, setting the pace. To the right beyond the median, an oncoming truck followed by a van approaches steadily in their lanes without encroaching. Near the left curb ahead, a small kei van creeps along beside queued pedestrians behind guardrails, staying out of the travel lane. A large 50 speed marking is visible in the oncoming lanes, and overhead guide signs appear farther ahead.", "hazard_reasoning": "There is a silver sedan slowing in the ego lane because of traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and avoid a rear-end collision under sudden speed reductions."}
{"id": "train_05709", "split": "train", "clip_key": "2020-0227-153144_029802_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "029802"}, "frames": ["2020-0227-153144_029802_movie_t-3.jpg", "2020-0227-153144_029802_movie_t-2.jpg", "2020-0227-153144_029802_movie_t-1.jpg", "2020-0227-153144_029802_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way road curves right past a construction-lined corner, with one lane each way, no median, smooth pavement, and light traffic moving slowly near an intersection. A white van directly ahead in the ego lane follows the right-hand bend, proceeding slowly and setting the ego car's pace. Farther ahead to the left, a silver sedan turns left into a side street, moving away from the ego path. A dark car at the left curb remains stationary at the edge of the roadway.", "hazard_reasoning": "There is a white van turning along the ego lane in front of the ego car. The driver should follow the vehicle ahead at a safe distance to anticipate its movement and avoid a collision."}
{"id": "train_05710", "split": "train", "clip_key": "2020-0228-150133_006676_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "006676"}, "frames": ["2020-0228-150133_006676_movie_t-3.jpg", "2020-0228-150133_006676_movie_t-2.jpg", "2020-0228-150133_006676_movie_t-1.jpg", "2020-0228-150133_006676_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane each direction and no median is shown, the asphalt in fair condition and traffic momentarily stopped. A white semi truck is directly ahead in the ego lane and stands still, blocking the path and holding the ego vehicle. Along the left side of the lane, a large box truck sits parallel and stationary, leaving little clearance and preventing a pass on that side. A side street opens on the right at an unsignalized intersection, with no vehicles entering and no visible oncoming traffic.", "hazard_reasoning": "There is a white semi truck stopped in the ego lane. Because it is stationary ahead and obstructs the road, the driver must stop to maintain safety and prevent collision."}
{"id": "train_05711", "split": "train", "clip_key": "titan_clip_288_000282_movie", "source": {"subset": "titan", "scenario": "clip_288", "frame": "000282"}, "frames": ["titan_clip_288_000282_movie_t-3.jpg", "titan_clip_288_000282_movie_t-2.jpg", "titan_clip_288_000282_movie_t-1.jpg", "titan_clip_288_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street lined with shops and low buildings has a single lane in each direction, no median, and smooth dry pavement; traffic is very light with no cars near the ego vehicle. On the right edge very close to the camera, a man wearing blue pants and a blue vest over a checkered shirt, carrying a shoulder bag, walks away along the roadway, slightly encroaching into the ego lane and narrowing space. Ahead on the left by the curb, a pedestrian stands beside a bicycle and pauses near the lane. Farther ahead, a few pedestrians move along both sidewalks, and several parked bicycles and storefront items line the right side, reducing roadside clearance; no oncoming vehicles are visible.", "hazard_reasoning": "There is a man wearing blue pants, a blue vest, and a checkered shirt, carrying a shoulder bag, and walking on the right side of the road, away from the ego car. The driver should slow down because the pedestrian may step into the lane unexpectedly and requires extra space to pass safely."}
{"id": "train_05712", "split": "train", "clip_key": "titan_clip_700_000222_movie", "source": {"subset": "titan", "scenario": "clip_700", "frame": "000222"}, "frames": ["titan_clip_700_000222_movie_t-3.jpg", "titan_clip_700_000222_movie_t-2.jpg", "titan_clip_700_000222_movie_t-1.jpg", "titan_clip_700_000222_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban back street with a single narrow lane and no center divider runs between dense shopfronts; the pavement is smooth and motor traffic is light with no vehicles ahead or oncoming. Two pedestrians with backpacks walk in the middle of the ego lane ahead, moving away from the car and effectively setting the pace, doing so as the roadside walk space is crowded with shop displays. Other pedestrians are visible along the sides but stay near the curb. Storefront signs, potted plants, and parked bicycles encroach on the edges, narrowing the corridor.", "hazard_reasoning": "There are two pedestrians carrying backpacks, walking in the middle of the road, away from the ego car, because the sidewalks are packed. The driver should slow down to avoid a potential collision with them."}
{"id": "train_05713", "split": "train", "clip_key": "titan_clip_1324_000072_movie", "source": {"subset": "titan", "scenario": "clip_1324", "frame": "000072"}, "frames": ["titan_clip_1324_000072_movie_t-3.jpg", "titan_clip_1324_000072_movie_t-2.jpg", "titan_clip_1324_000072_movie_t-1.jpg", "titan_clip_1324_000072_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban residential scene shows a very narrow two-way lane without a centerline curving gently to the right, bordered by walls and hedges; the pavement is smooth and dry, and traffic is light with no vehicles seen in either direction. On the left edge near the hedge, a cap-wearing pedestrian holds a bicycle and speaks with another pedestrian, standing still close to the roadway where they may edge into the lane as the car approaches. A convex safety mirror stands at the corner before the blind right bend, underscoring limited sight lines around the curve.", "hazard_reasoning": "There is a pedestrian wearing a cap, holding a bicycle, and standing on the left side of the road because they are speaking with another pedestrian. You should carefully manoeuvre around them to avoid any sudden intrusion into your lane."}
{"id": "train_05714", "split": "train", "clip_key": "titan_clip_604_000438_movie", "source": {"subset": "titan", "scenario": "clip_604", "frame": "000438"}, "frames": ["titan_clip_604_000438_movie_t-3.jpg", "titan_clip_604_000438_movie_t-2.jpg", "titan_clip_604_000438_movie_t-1.jpg", "titan_clip_604_000438_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian in crosswalk", "environment_perception": "An urban side-street intersection features a narrow two-way road without a median; the pavement looks smooth and traffic is light. A pedestrian in a white shirt and black pants crosses the zebra crosswalk from the right toward the ego vehicle, entering the ego lane and requiring the driver to yield. Another pedestrian ahead also proceeds across from the right at the same crosswalk, continuing through the vehicle's path. A black van is stopped at the right curb by the corner near the crosswalk, partly obscuring the view of people stepping out. No other moving vehicles are visible in the same direction or oncoming.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, crossing the street at the pedestrian crosswalk, moving toward the ego car. The pedestrian is entering the path of the ego-vehicle and requires the driver to yield to prevent a collision."}
{"id": "train_05715", "split": "train", "clip_key": "titan_clip_62_000474_movie", "source": {"subset": "titan", "scenario": "clip_62", "frame": "000474"}, "frames": ["titan_clip_62_000474_movie_t-3.jpg", "titan_clip_62_000474_movie_t-2.jpg", "titan_clip_62_000474_movie_t-1.jpg", "titan_clip_62_000474_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban two-lane road with no median passes through a small intersection; the pavement looks smooth, vehicle traffic is light, and pedestrian activity is heavy. On the left side of the intersection, a pedestrian in a black top carrying a bag crosses toward the ego car, moving into the lane. At the right edge close to the camera, a cyclist rides leftward from the sidewalk area across the roadway and may enter the ego path. Farther ahead near the center, a person holding a white umbrella crosses slowly from right to left, potentially constraining the ego vehicle as the road curves through the junction.", "hazard_reasoning": "There is a pedestrian wearing a black top, carrying a bag, crossing the street on the left side of the intersection, towards the ego car. The pedestrian is entering the vehicle's path, so the driver must slow down and yield to avoid a collision."}
{"id": "train_05716", "split": "train", "clip_key": "titan_clip_814_000546_movie", "source": {"subset": "titan", "scenario": "clip_814", "frame": "000546"}, "frames": ["titan_clip_814_000546_movie_t-3.jpg", "titan_clip_814_000546_movie_t-2.jpg", "titan_clip_814_000546_movie_t-1.jpg", "titan_clip_814_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban commercial street with left-side driving is shown, a single two-way lane without a median on worn but smooth asphalt, and no moving vehicles so traffic is very light. Ahead on the left side of the roadway, a man wearing a black T-shirt and black shorts walks away from the ego vehicle along the edge of the lane, reducing the usable space in the ego path. Just beyond him at the left curb, another pedestrian in a white shirt stands beside signboards and luggage outside a shop close to the roadway. On the right, a woman stands at a storefront entrance and remains stationary. Parked bicycles and sidewalk signboards line both curbs, narrowing the corridor.", "hazard_reasoning": "There is a man wearing a black T-shirt and black shorts walking on the left side of the road, away from the ego car. As he walks on the roadway, the driver should manoeuvre around him to avoid a collision."}
{"id": "train_05717", "split": "train", "clip_key": "2020-0203-154554_039800_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "039800"}, "frames": ["2020-0203-154554_039800_movie_t-3.jpg", "2020-0203-154554_039800_movie_t-2.jpg", "2020-0203-154554_039800_movie_t-1.jpg", "2020-0203-154554_039800_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial runs under an elevated expressway, with a right-side guardrail and dry, smooth pavement; all visible traffic moves in the same direction at a moderate, steady flow. A white box truck ahead in the ego lane drives away at a constant speed, effectively setting the ego vehicle's pace. In the adjacent right lane, a small flatbed pickup slightly ahead continues straight and eases forward without merging. In the left lane, a dark minivan and a couple of cars travel parallel a bit farther ahead, maintaining gaps and staying in their lane. Buildings and fenced sidewalks line both sides, and the expressway pillars cast shade but do not intrude into the lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05718", "split": "train", "clip_key": "2020-0220-102630_019052_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_019052_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_019052_movie_t-3_augB1.jpg", "2020-0220-102630_019052_movie_t-2_augB1.jpg", "2020-0220-102630_019052_movie_t-1_augB1.jpg", "2020-0220-102630_019052_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes and no physical median is dry and smooth, and traffic is heavy with stop-and-go movement. The ego vehicle travels in the left lane. Directly ahead, a white sedan in the ego lane slows due to congestion ahead, constraining the ego's pace. To the right, a white van in the adjacent lane creeps forward beside the sedan, keeping close and limiting lane changes. Farther ahead in the same direction, a tall box truck is queued and appears stopped, reinforcing the backup. A 50 km/h speed-limit sign stands on the left roadside.", "hazard_reasoning": "There is a white sedan slowing down in front of the ego car, due to traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid collisions when traffic ahead unexpectedly reduces speed."}
{"id": "train_05719", "split": "train", "clip_key": "2020-0220-102630_003170_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "003170"}, "frames": ["2020-0220-102630_003170_movie_t-3.jpg", "2020-0220-102630_003170_movie_t-2.jpg", "2020-0220-102630_003170_movie_t-1.jpg", "2020-0220-102630_003170_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban scene shows a smooth two-lane road with both lanes traveling in the same direction, bordered by a curb on the left and a metal guardrail on the right; traffic is light and briefly queues at an intersection ahead. A black van directly ahead in the ego lane stops and waits for a red traffic light, constraining the ego vehicle's pace. Cars in the adjacent right lane proceed toward the junction in their lane without merging. Farther ahead across the intersection, vehicles are visible on the cross street, confirming the active junction.", "hazard_reasoning": "There is a black van stopped in the ego lane because of a red traffic light. You must stop because the vehicle ahead has halted at a red signal, and failure to do so could result in a rear-end collision."}
{"id": "train_05720", "split": "train", "clip_key": "titan_clip_23_000126_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_23_000126_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_23_000126_movie_t-3_augB1.jpg", "titan_clip_23_000126_movie_t-2_augB1.jpg", "titan_clip_23_000126_movie_t-1_augB1.jpg", "titan_clip_23_000126_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with brick paving forms a single-lane carriageway with no median, and traffic is light and slow. A black mini-van ahead in the same lane rolls slowly and briefly stops near the curb, setting the pace. A pedestrian in a black suit crosses mid-block from the right to the left ahead, stepping into the lane and potentially entering the ego path. Two other pedestrians walk along the left edge under an umbrella and remain on the sidewalk. Cones and bollards on the left, along with parked bicycles and a scooter on the right, further narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a black suit, crossing the street in the middle of the road, from the right side to the left side. The driver should slow down because the pedestrian is in the driving path and could step unpredictably."}
{"id": "train_05721", "split": "train", "clip_key": "titan_clip_698_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_698_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_698_000204_movie_t-3_augB1.jpg", "titan_clip_698_000204_movie_t-2_augB1.jpg", "titan_clip_698_000204_movie_t-1_augB1.jpg", "titan_clip_698_000204_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with smooth asphalt and no lane markings or median shows light traffic and no moving vehicles. Ahead, a woman pushing a stroller walks in the middle of the road and shifts toward the right side, occupying the travel lane and constraining the ego vehicle's path. Farther ahead near the right curb, another pedestrian continues along the edge without entering the lane. Parked bicycles line the right sidewalk, and sandwich-board signs near storefronts sit close to the curb but remain off the roadway.", "hazard_reasoning": "There is a woman pushing a stroller and walking in the middle of the road, toward the right side. The pedestrian may cross unpredictably into the path of the vehicle, so the driver should slow down to avoid a potential collision."}
{"id": "train_05722", "split": "train", "clip_key": "2020-0226-140503_081777_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "081777"}, "frames": ["2020-0226-140503_081777_movie_t-3.jpg", "2020-0226-140503_081777_movie_t-2.jpg", "2020-0226-140503_081777_movie_t-1.jpg", "2020-0226-140503_081777_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way arterial with left-side traffic has no physical median and dry, well-kept pavement; traffic is heavy and mostly stop-and-go. A white hatchback immediately ahead in the ego lane is stopped because of congestion ahead, holding the ego car. A large box truck slightly ahead to the left waits in the adjacent lane with the queue, limiting forward visibility. A white minivan alongside on the far left creeps forward near the lane line and may merge into the ego lane. Oncoming vehicles to the right, including a yellow service vehicle, move slowly in their lanes and remain separated by center markings. Overhead signs display straight-ahead arrows.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because of traffic congestion ahead. Stop to avoid rear-ending the halted vehicle and maintain a safe distance in congestion."}
{"id": "train_05723", "split": "train", "clip_key": "2020-0131-135401_051910_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "051910"}, "frames": ["2020-0131-135401_051910_movie_t-3.jpg", "2020-0131-135401_051910_movie_t-2.jpg", "2020-0131-135401_051910_movie_t-1.jpg", "2020-0131-135401_051910_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban two-way road with one lane each direction and a yellow centerline runs between mid-rise buildings; the pavement is dry and traffic is moderate as the view approaches a crosswalked intersection. A cyclist in a purple coat with a purple backpack rides along the left edge near the guardrail, moving away from the ego car and continuing straight without entering the lane. A dark van ahead in the ego lane proceeds toward the intersection and then eases its speed, setting the ego vehicle's pace. Oncoming cars to the right travel steadily through the junction.", "hazard_reasoning": "There is a cyclist in a purple coat, wearing a purple back pack, cycling on the left side of the road, away from the ego car. The driver should manoeuvre carefully around the cyclist to maintain safe spacing and avoid a collision."}
{"id": "train_05724", "split": "train", "clip_key": "titan_clip_53_000234_movie", "source": {"subset": "titan", "scenario": "clip_53", "frame": "000234"}, "frames": ["titan_clip_53_000234_movie_t-3.jpg", "titan_clip_53_000234_movie_t-2.jpg", "titan_clip_53_000234_movie_t-1.jpg", "titan_clip_53_000234_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be aware of stopped sedan ahead", "environment_perception": "An urban backstreet with one narrow lane in each direction and no median stretches ahead; pavement is dry and intact, and traffic is light with no moving vehicles visible in front or oncoming. On the left near the ego vehicle, a black sedan is stopped at the edge of the road as it exits a parking garage, waiting and potentially entering the ego lane. Farther ahead on the left, a small car sits parked at the curb, narrowing the usable lane but remaining outside the travel path. Other parked cars in bays along the left side and closely spaced buildings confine the roadway.", "hazard_reasoning": "There is a black sedan stopped on the left side of the road because it is exiting a parking garage. The vehicle may pull out into the lane unexpectedly, so the driver should be aware of its potential movement."}
{"id": "train_05725", "split": "train", "clip_key": "2020-0207-101955_105711_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "105711"}, "frames": ["2020-0207-101955_105711_movie_t-3.jpg", "2020-0207-101955_105711_movie_t-2.jpg", "2020-0207-101955_105711_movie_t-1.jpg", "2020-0207-101955_105711_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with two lanes in the ego direction and a right-side guardrail; the pavement is smooth and traffic shifts to moderate with a visible slowdown ahead. A blue sedan directly ahead in the ego lane slows progressively because of congestion forming further up, dictating the ego vehicle's pace. In the right adjacent lane a white van travels slightly ahead at a similar speed, limiting immediate room to change lanes. Farther ahead across both lanes, a cluster of cars including a white box truck bunches near a gentle bend, sustaining the slowdown.", "hazard_reasoning": "There is a blue sedan slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain safe distance and avoid a rear-end collision."}
{"id": "train_05726", "split": "train", "clip_key": "titan_clip_478_000378_movie", "source": {"subset": "titan", "scenario": "clip_478", "frame": "000378"}, "frames": ["titan_clip_478_000378_movie_t-3.jpg", "titan_clip_478_000378_movie_t-2.jpg", "titan_clip_478_000378_movie_t-1.jpg", "titan_clip_478_000378_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of pedestrian approaching intersection", "environment_perception": "A compact urban shopping street opens from a small intersection, with a single narrow lane on worn block-pattern pavement; bollards line both sides and a convex mirror stands at the left corner. Traffic is light. Far ahead in the same direction, a black car proceeds steadily down the lane and sets the pace. On the left sidewalk, a pedestrian wearing gray pants and a white mask walks toward the intersection and nears the corner in front of the ego vehicle, so the person may step toward the crossing. At the left curb by the corner, a small delivery truck is stopped for loading while two workers stand nearby, slightly narrowing the entry to the lane.", "hazard_reasoning": "A pedestrian wearing gray pants and a white mask is walking on a sidewalk on the left side of the road and is approaching the intersection. The pedestrian may step into the roadway unexpectedly as they near the intersection, creating a collision risk if the driver is not attentive."}
{"id": "train_05727", "split": "train", "clip_key": "2020-0220-151845_031259_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "031259"}, "frames": ["2020-0220-151845_031259_movie_t-3.jpg", "2020-0220-151845_031259_movie_t-2.jpg", "2020-0220-151845_031259_movie_t-1.jpg", "2020-0220-151845_031259_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of van merging ahead.", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with three same-direction lanes and dry, intact pavement; traffic is moderate and flows steadily. To the left, a white van drifts right and cuts into the ego lane because the left lane is blocked by a parked truck, so it may enter the ego path immediately ahead. A tarp-covered flatbed truck is just ahead in the ego lane, moving slowly and constraining the ego vehicle's speed. On the right, a black SUV continues in the adjacent lane, overtaking the ego vehicle without merging.", "hazard_reasoning": "There is a white van cutting into the ego lane from the left lane, because of a parked truck in the left lane. The van's unexpected merge requires you to be aware to maintain safe spacing."}
{"id": "train_05728", "split": "train", "clip_key": "titan_clip_932_000510_movie", "source": {"subset": "titan", "scenario": "clip_932", "frame": "000510"}, "frames": ["titan_clip_932_000510_movie_t-3.jpg", "titan_clip_932_000510_movie_t-2.jpg", "titan_clip_932_000510_movie_t-1.jpg", "titan_clip_932_000510_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial street with one lane in each direction, no median, and smooth pavement; traffic flow is moderate with steady oncoming vehicles. Parked cars line both curbs, creating a narrow corridor and occasional pinch points. A small blue truck is stopped just ahead along the left curb, protruding into the ego lane and slowing the approach. A man wearing a black T-shirt and black pants walks toward the ego along the left edge, stepping around the parked vehicle and briefly occupying part of the lane, so he may enter the ego path. Multiple cars and vans travel toward the camera in the right-side oncoming lane, passing continuously and limiting room to pull out.", "hazard_reasoning": "There is a man wearing a black T-shirt and black pants and walking on the left side of the street, toward the ego car, because of the parked vehicle. The driver should carefully manoeuvre around him to avoid a potential collision."}
{"id": "train_05729", "split": "train", "clip_key": "2020-0212-102546_080767_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "080767"}, "frames": ["2020-0212-102546_080767_movie_t-3.jpg", "2020-0212-102546_080767_movie_t-2.jpg", "2020-0212-102546_080767_movie_t-1.jpg", "2020-0212-102546_080767_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban sunken roadway with two same-direction lanes passes under an overpass, bounded by high concrete walls and posts, with smooth pavement and light traffic. A white van travels ahead in the ego lane at a steady pace, with no congestion visible in front of it, so it effectively sets the ego car's speed. The adjacent right lane appears open with no merging activity, and no oncoming traffic is present due to the divided layout. No salient signals or speed signs are clearly visible, and there are no obstacles or work zones.", "hazard_reasoning": "There is a white van moving ahead in the ego lane in front of the ego car, because of no traffic congestion ahead. Maintaining a safe distance behind the white van and following it helps avoid the potential restricted construction zone marked by the cones."}
{"id": "train_05730", "split": "train", "clip_key": "titan_clip_55_000174_movie", "source": {"subset": "titan", "scenario": "clip_55", "frame": "000174"}, "frames": ["titan_clip_55_000174_movie_t-3.jpg", "titan_clip_55_000174_movie_t-2.jpg", "titan_clip_55_000174_movie_t-1.jpg", "titan_clip_55_000174_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane in each direction approaches a signalized intersection, the pavement smooth and traffic light. Ahead in the ego lane, a green bus stands stopped and controls the ego car's pace. On the left curb at the near crosswalk, a woman with a white parasol begins to step out and walks rightward across the ego vehicle's path, creating a potential need to wait. On the right edge near the crosswalk, a person pushing a handcart moves slowly toward the roadway and could enter the lane. A few vehicles wait across the intersection on the far side, with no median or divider between directions.", "hazard_reasoning": "There is a green bus stopped in front of the ego car in the ego lane. Drivers should slow down to avoid colliding with the stopped bus and maintain a safe following distance."}
{"id": "train_05731", "split": "train", "clip_key": "2020-0228-102841_024708_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "024708"}, "frames": ["2020-0228-102841_024708_movie_t-3.jpg", "2020-0228-102841_024708_movie_t-2.jpg", "2020-0228-102841_024708_movie_t-1.jpg", "2020-0228-102841_024708_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial in Japan approaches a wide signalized intersection with smooth pavement and painted lane dividers, and traffic is moderate and flowing. A black motorcycle directly ahead in the ego lane accelerates away through the intersection under a green light, pulling ahead of the ego vehicle. In the adjacent lane to the right, a maroon mini car slightly ahead continues straight at a similar speed without drifting toward the ego path. In the left lane, a black taxi is stopped near the crosswalk at the stop line, constraining that lane but not the ego's movement.", "hazard_reasoning": "There's a black motorcycle riding away from the ego car in the ego lane, because of green traffic light. You should follow the vehicle ahead to maintain a safe distance and anticipate its movement through the green light."}
{"id": "train_05732", "split": "train", "clip_key": "2020-0214-145407_015286_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "015286"}, "frames": ["2020-0214-145407_015286_movie_t-3.jpg", "2020-0214-145407_015286_movie_t-2.jpg", "2020-0214-145407_015286_movie_t-1.jpg", "2020-0214-145407_015286_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with mid-rise buildings has two lanes in the ego direction, but the left lane is coned off for roadwork; the pavement is dry and traffic is light. A white truck ahead in the ego lane drives away steadily, setting the ego car's pace. A blue work truck is stopped on the left within the coned closure, and an arrow board directs traffic to keep right, narrowing the usable lane. Two workers stand inside the cones near the lane edge, remaining clear yet close to the ego path.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. This vehicle ahead may brake abruptly or slow suddenly, so follow it at a safe distance."}
{"id": "train_05733", "split": "train", "clip_key": "2020-0203-154554_073859_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "073859"}, "frames": ["2020-0203-154554_073859_movie_t-3.jpg", "2020-0203-154554_073859_movie_t-2.jpg", "2020-0203-154554_073859_movie_t-1.jpg", "2020-0203-154554_073859_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and maintain a safe distance", "environment_perception": "An urban two-way street with one lane per direction and no median is shown, the dry pavement bordered by trees, and traffic is heavy and queued at a signalized intersection. An orange hatchback is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle at the crosswalk. In the oncoming lane to the right, a white minivan faces the camera and waits at the line as its direction is also queued. On the left edge, a motorcycle creeps forward along the curb beside the queued ego lane, occupying space close to the ego vehicle's path. The overhead signal for the ego approach shows green while a nearby pedestrian signal shows red, yet traffic remains blocked.", "hazard_reasoning": "There is an orange hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The hatchback is halted due to congestion, so the driver should stop and maintain a safe distance to avoid a rear-end collision."}
{"id": "train_05734", "split": "train", "clip_key": "2020-0220-102630_086889_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "086889"}, "frames": ["2020-0220-102630_086889_movie_t-3.jpg", "2020-0220-102630_086889_movie_t-2.jpg", "2020-0220-102630_086889_movie_t-1.jpg", "2020-0220-102630_086889_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a center divider comes into view at a signalized intersection; the pavement is dry and traffic is moderate and flowing steadily. A white van travels ahead in the ego lane pulling away from the camera, maintaining the pace of the stream. In the adjacent left lane ahead, a small box truck followed by a dark hatchback moves forward more slowly, limiting opportunities to change lanes. On the opposite side to the right beyond the median, a large container truck approaches as oncoming traffic, separated from the ego path.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. The yellow traffic light signals caution and the van's movement in the ego lane could affect stopping distance, so the driver should be aware of the white van ahead."}
{"id": "train_05735", "split": "train", "clip_key": "titan_clip_737_000174_movie", "source": {"subset": "titan", "scenario": "clip_737", "frame": "000174"}, "frames": ["titan_clip_737_000174_movie_t-3.jpg", "titan_clip_737_000174_movie_t-2.jpg", "titan_clip_737_000174_movie_t-1.jpg", "titan_clip_737_000174_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian on the right side", "environment_perception": "A narrow urban shopping street with a single undivided lane and smooth pavement shows light traffic as the ego vehicle rolls straight ahead. The corridor is tight, with storefronts and parked bicycles close to the edges. On the near right, a pedestrian carrying a handbag stands at the curb beside the wall, stationary and very close to the travel path. Far ahead near the center of the lane, two pedestrians walk along the roadway toward the left side, potentially influencing the vehicle's pace. A scooter and additional bicycles are stopped along the right edge ahead, further narrowing the usable lane, and no traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian carrying a handbag and standing at the right side of the road. Drivers should be cautious because the pedestrian may step into the roadway unexpectedly, creating a collision risk."}
{"id": "train_05736", "split": "train", "clip_key": "titan_clip_404_000186_movie", "source": {"subset": "titan", "scenario": "clip_404", "frame": "000186"}, "frames": ["titan_clip_404_000186_movie_t-3.jpg", "titan_clip_404_000186_movie_t-2.jpg", "titan_clip_404_000186_movie_t-1.jpg", "titan_clip_404_000186_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Yield to cyclist turning left", "environment_perception": "A narrow urban side street with a single lane and brick pavers opens onto a larger two-way road at a zebra crossing; pavement is dry and traffic on the cross street is light. Ahead in the crosswalk, a man walks rightward across the mouth of the alley, occupying the ego vehicle's path and controlling its pace. From the left edge, another pedestrian steps onto the crosswalk and continues right, also traversing the alley entrance. To the right, a cyclist wearing a cap turns left across the crosswalk toward the alley, potentially entering the ego lane. A 30 speed-limit sign is posted on a pole at the right side of the junction.", "hazard_reasoning": "There is a cyclist wearing a cap and turning left, in the middle of the road, towards the ego-car. The cyclist's maneuver could intersect with the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_05737", "split": "train", "clip_key": "2020-0206-101736_070830_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-101736_070830_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-101736_070830_movie_t-3_augB1.jpg", "2020-0206-101736_070830_movie_t-2_augB1.jpg", "2020-0206-101736_070830_movie_t-1_augB1.jpg", "2020-0206-101736_070830_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision with slowing truck", "environment_perception": "An urban two-way road runs past low-rise buildings, with the ego car in the single left lane and two opposing lanes across double solid white lines; the pavement is smooth and traffic is moderate with steady flow. Ahead in the ego lane, a white truck slows and continues straight, constraining the ego car's pace as described. To the right across the divider, a black van in the near oncoming lane approaches at a steady speed and passes opposite the ego's path without interfering. Farther ahead in the other oncoming lane, a small car and a light van proceed toward the camera, maintaining their lanes and contributing to the opposing flow. An overhead gantry spans the roadway, and no signals or unusual signs are prominent.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's reduced speed could lead to a collision if the driver does not decrease speed in time."}
{"id": "train_05738", "split": "train", "clip_key": "2020-0204-150838_081170_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "081170"}, "frames": ["2020-0204-150838_081170_movie_t-3.jpg", "2020-0204-150838_081170_movie_t-2.jpg", "2020-0204-150838_081170_movie_t-1.jpg", "2020-0204-150838_081170_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban arterial carries two same-direction lanes with smooth pavement, bordered by a right-side guardrail and noise barrier; traffic flow is moderate and steady. A black van ahead in the ego lane travels at a constant pace and effectively sets the speed. To the left, a large box truck in the adjacent lane moves forward alongside and slowly overtakes, remaining close but not entering the ego lane. On a separate elevated ramp to the right, several cars climb uphill in the same direction, isolated by the barrier and not interacting with the main lanes. Blue guide signs and an overhead gantry appear ahead but no active signals are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05739", "split": "train", "clip_key": "2020-0213-143552_004665_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "004665"}, "frames": ["2020-0213-143552_004665_movie_t-3.jpg", "2020-0213-143552_004665_movie_t-2.jpg", "2020-0213-143552_004665_movie_t-1.jpg", "2020-0213-143552_004665_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the brown truck", "environment_perception": "An urban two-way arterial with two lanes per direction and no physical median stretches ahead on smooth pavement, with light to moderate flow. On the left curb just ahead, a brown box truck is parked with its rear open as it is being unloaded, narrowing the shoulder and the green bicycle lane beside the ego path. Farther ahead in the same direction, a small white truck moves away at a steady pace in the left lane. In the right-side lanes, several oncoming cars and white vans approach in a continuous stream, separated from the ego direction only by painted center lines.", "hazard_reasoning": "There is a brown truck parked on the left side of the road, because it is being unloaded. The parked and unloading truck may obstruct traffic flow and require drivers to manoeuvre cautiously to avoid collision."}
{"id": "train_05740", "split": "train", "clip_key": "2020-0131-135401_000594_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-135401_000594_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-135401_000594_movie_t-3_augB1.jpg", "2020-0131-135401_000594_movie_t-2_augB1.jpg", "2020-0131-135401_000594_movie_t-1_augB1.jpg", "2020-0131-135401_000594_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single lane per direction runs between mid-rise buildings, divided by a yellow center line on smooth pavement, and traffic is moderate. Ahead in the ego lane, a white box truck slows because congestion forms farther up the road, constraining the ego vehicle's pace. To the right, an oncoming silver minivan and a small white car pass steadily in their lane. On the left sidewalk, a pedestrian near a parked black car walks along the curb while a few others remain by the building without stepping into the roadway.", "hazard_reasoning": "There is a white truck slowing in the ego lane because of traffic congestion ahead on the road. Slow down to maintain a safe following distance and avoid a collision due to the reduced speed of the vehicle ahead."}
{"id": "train_05741", "split": "train", "clip_key": "2020-0131-103016_054167_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "054167"}, "frames": ["2020-0131-103016_054167_movie_t-3.jpg", "2020-0131-103016_054167_movie_t-2.jpg", "2020-0131-103016_054167_movie_t-1.jpg", "2020-0131-103016_054167_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of merging black hatchback", "environment_perception": "An urban divided arterial with two lanes in the ego direction descends between tall buildings, separated from oncoming lanes by a raised median with railing. The pavement looks smooth with large 50 markings, and traffic is light ahead while oncoming flow is heavier. Ahead left, a black hatchback changes from the left lane into the ego lane because the road ahead is clear. Slightly farther ahead in the adjacent right lane, a small white pickup continues straight at a steady pace without encroaching on the ego lane. Near the left curb, a motorcyclist waits by the guardrail and may merge into traffic.", "hazard_reasoning": "There is a black hatchback changing lanes from the left lane to the ego lane, because the road ahead is clear. The driver should be aware of this merging maneuver to maintain safe following distance and avoid sudden braking."}
{"id": "train_05742", "split": "train", "clip_key": "2020-0226-140503_002948_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "002948"}, "frames": ["2020-0226-140503_002948_movie_t-3.jpg", "2020-0226-140503_002948_movie_t-2.jpg", "2020-0226-140503_002948_movie_t-1.jpg", "2020-0226-140503_002948_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes runs between tall buildings; the dry asphalt is well marked, there is no median, and traffic is heavy and slow. A red hatchback is stopped directly ahead in the ego lane because of congestion and holds the ego vehicle. Farther ahead in the same lane, a large white box truck inches forward at the head of the queue. In the right adjacent lane, a green city bus proceeds slowly past the line of cars. Pedestrians are visible on the sidewalks, remaining clear of the roadway.", "hazard_reasoning": "There is a red hatchback stopped in front of the ego car in the ego lane, because of traffic congestion ahead. Stop to avoid a collision with the halted hatchback due to heavy congestion."}
{"id": "train_05743", "split": "train", "clip_key": "titan_clip_976_000096_movie", "source": {"subset": "titan", "scenario": "clip_976", "frame": "000096"}, "frames": ["titan_clip_976_000096_movie_t-3.jpg", "titan_clip_976_000096_movie_t-2.jpg", "titan_clip_976_000096_movie_t-1.jpg", "titan_clip_976_000096_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped bus", "environment_perception": "An urban two-way road with one lane in each direction runs straight between apartment blocks, divided by short bollards; the pavement is smooth and traffic is light. A red bus is stopped on the left side of the road just ahead, occupying part of the ego lane and narrowing the path. An oncoming white coach in the right lane moves steadily toward and then past, remaining within its lane. A pedestrian on the left sidewalk walks beside the crosswalk and stays off the roadway. A speed-limit 50 sign and a time-restricted no-parking sign are posted on the left.", "hazard_reasoning": "There is a red bus stopped on the left side of the road. The stopped bus may obstruct your lane and require you to navigate around it safely, so you should carefully manoeuvre to avoid collision."}
{"id": "train_05744", "split": "train", "clip_key": "2020-0129-144857_033250_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-144857_033250_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-144857_033250_movie_t-3_augB1.jpg", "2020-0129-144857_033250_movie_t-2_augB1.jpg", "2020-0129-144857_033250_movie_t-1_augB1.jpg", "2020-0129-144857_033250_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban scene under an elevated structure shows the ego car in the right of two same-direction lanes bordered by a right-side guardrail on dry, smooth pavement, with slow, stop-and-go flow. A black van directly ahead in the ego lane slows and brakes because of congestion ahead. Farther ahead in the same lane, a white box truck crawls and is the foremost visible vehicle in the queue, constraining the pace. In the left adjacent lane, a large truck travels alongside and then edges forward, reducing available gaps and limiting any immediate lane change by the ego vehicle. No salient signals or unusual signage are visible.", "hazard_reasoning": "There is a black van slowing in front of the ego car, in the ego lane, due to traffic congestion ahead. The vehicle ahead is reducing speed because of congestion, so the driver should slow down to maintain a safe following distance."}
{"id": "train_05745", "split": "train", "clip_key": "2020-0227-153144_011641_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "011641"}, "frames": ["2020-0227-153144_011641_movie_t-3.jpg", "2020-0227-153144_011641_movie_t-2.jpg", "2020-0227-153144_011641_movie_t-1.jpg", "2020-0227-153144_011641_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street curves right toward a signalized intersection, with a single same-direction lane bordered by curbs and railings; pavement appears smooth and traffic is light. A black van is stopped ahead in the ego lane because the traffic signal shows red, and it holds the ego vehicle at the line. A pedestrian to the right steps onto the crosswalk and walks left across the intersection, briefly occupying the area ahead of the stopped vehicles. An overhead blue sign indicates a right-turn movement for the approaching lane. No other moving vehicles are close, and oncoming traffic is not prominent in this view.", "hazard_reasoning": "There is a black van stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid a collision and comply with the red signal."}
{"id": "train_05746", "split": "train", "clip_key": "2020-0227-153144_037180_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "037180"}, "frames": ["2020-0227-153144_037180_movie_t-3.jpg", "2020-0227-153144_037180_movie_t-2.jpg", "2020-0227-153144_037180_movie_t-1.jpg", "2020-0227-153144_037180_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and no physical median runs between mid-rise buildings, and traffic is moderate with a short queue at an intersection. The white van immediately ahead in the ego lane is stopped for the red light ahead, holding the ego vehicle. A beige van slightly farther ahead in the adjacent same-direction lane also comes to a stop with the queue, remaining parallel to the ego's path. A larger box truck in the left curb lane is halted as part of the same line, preventing any leftward bypass. In the opposite lanes on the right, a black SUV and other cars travel toward the camera without delay. Overhead signals show red for the ego's direction.", "hazard_reasoning": "There is a white van stopped in front of the ego-car, in the ego lane, because of the red traffic light ahead on the road. The driver should stop to avoid a collision with the halted van and comply with the red signal."}
{"id": "train_05747", "split": "train", "clip_key": "2020-0205-103411_121093_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "121093"}, "frames": ["2020-0205-103411_121093_movie_t-3.jpg", "2020-0205-103411_121093_movie_t-2.jpg", "2020-0205-103411_121093_movie_t-1.jpg", "2020-0205-103411_121093_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane each direction runs between mid-rise buildings; the pavement is dry and intact, and traffic is moderate. Directly ahead a dark hatchback in the ego lane continues straight at a steady pace, constraining the ego car. Farther ahead in the same lane, a gray van drives away from the ego car. On the far left, oncoming cars travel in their opposite lane beyond the yellow center line. A curbside bay to the right, separated by a dashed buffer and low curb, contains a line of parked vehicles.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05748", "split": "train", "clip_key": "2020-0220-102630_081110_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "081110"}, "frames": ["2020-0220-102630_081110_movie_t-3.jpg", "2020-0220-102630_081110_movie_t-2.jpg", "2020-0220-102630_081110_movie_t-1.jpg", "2020-0220-102630_081110_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings; the pavement is smooth and traffic is moderate, with oncoming lanes separated by a guardrail median. A white van ahead in the ego lane accelerates away from the ego car, opening a small gap. In the adjacent right lane, a black SUV slightly ahead proceeds straight at a steady pace, occupying space next to the ego vehicle. A silver hatchback to the right of the ego car travels forward in the same lane as the SUV, roughly alongside before edging slightly ahead. Overhead gantries span the road and no unusual obstacles are visible.", "hazard_reasoning": "A white van accelerating in front of the ego car. Driver should accelerate to maintain a safe following distance and avoid falling too far behind."}
{"id": "train_05749", "split": "train", "clip_key": "titan_clip_679_000096_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_679_000096_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_679_000096_movie_t-3_augB1.jpg", "titan_clip_679_000096_movie_t-2_augB1.jpg", "titan_clip_679_000096_movie_t-1_augB1.jpg", "titan_clip_679_000096_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single vehicle lane and no median runs between buildings; the asphalt is smooth and overall traffic is light with no moving cars. Ahead, a pedestrian wearing a white shirt and black pants walks in the middle of the road, moving away from the ego car and drifting toward the right, occupying the travel lane and constraining the approach. On the right edge near the foreground, another pedestrian walks toward the camera partly in the roadway, further reducing available width. Farther ahead by the left curb, a pedestrian proceeds along the edge without entering the lane. Parked bicycles and orange cones line the left sidewalk, slightly narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking in the middle of the road, toward the right side and away from the ego car. The pedestrian's position in the roadway is unpredictable and could lead to a collision if not approached cautiously, so the driver should reduce speed as recommended."}
{"id": "train_05750", "split": "train", "clip_key": "titan_clip_355_000384_movie", "source": {"subset": "titan", "scenario": "clip_355", "frame": "000384"}, "frames": ["titan_clip_355_000384_movie_t-3.jpg", "titan_clip_355_000384_movie_t-2.jpg", "titan_clip_355_000384_movie_t-1.jpg", "titan_clip_355_000384_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow travel lane and raised curbs, smooth asphalt, and light traffic flows steadily. A small utility truck is ahead in the ego lane at close range, moving slowly and constraining the ego car's pace. Farther ahead another car proceeds in the same direction down the lane. On the right, a group of pedestrians walks along the sidewalk close to the curb near a shop entrance, parallel to the ego car and staying adjacent to its path. On the left, traffic cones and a small sign form a roadside work area just ahead of the ego vehicle, with one cone protruding near the lane. No signals or speed signs are salient.", "hazard_reasoning": "There is a traffic cone on the left side of the street indicating a work area in front of the ego-car. You should slow down because the cones mark a work area, posing potential obstacles and workers ahead."}
{"id": "train_05751", "split": "train", "clip_key": "2020-0207-101955_016454_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "016454"}, "frames": ["2020-0207-101955_016454_movie_t-3.jpg", "2020-0207-101955_016454_movie_t-2.jpg", "2020-0207-101955_016454_movie_t-1.jpg", "2020-0207-101955_016454_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with smooth pavement carries two same-direction lanes separated from oncoming traffic by a narrow raised median; traffic flow is light. A white truck covered with a green canvas is directly ahead in the ego lane and slows, constraining the ego vehicle's pace. Farther ahead in the adjacent left lane, a dark car continues straight at a steady speed and remains clear of the ego lane. On the right sidewalk, a person stands beside a bicycle near the railing and stays off the roadway. Beyond the median, a few oncoming cars pass steadily without interacting with the ego vehicle.", "hazard_reasoning": "There is a white truck covered in a green canvas slowing in front of the ego car in the ego lane. The slowing truck may require the driver to reduce speed to maintain a safe following distance and avoid a collision."}
{"id": "train_05752", "split": "train", "clip_key": "2020-0210-155354_014501_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "014501"}, "frames": ["2020-0210-155354_014501_movie_t-3.jpg", "2020-0210-155354_014501_movie_t-2.jpg", "2020-0210-155354_014501_movie_t-1.jpg", "2020-0210-155354_014501_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with two lanes and no median runs between mid-rise buildings; the pavement looks smooth and traffic is slow. A red SUV directly ahead in the ego lane is stopped with its brake light on, queuing because of congestion ahead, and it constrains the ego vehicle's pace. On the right, a marked police car is stationary near the curb on the oncoming side, close to the travel lane but not entering the ego lane. Traffic signals are visible further ahead.", "hazard_reasoning": "There is a red SUV stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary SUV and accommodate the slowed traffic flow ahead."}
{"id": "train_05753", "split": "train", "clip_key": "2020-0221-115122_010675_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "010675"}, "frames": ["2020-0221-115122_010675_movie_t-3.jpg", "2020-0221-115122_010675_movie_t-2.jpg", "2020-0221-115122_010675_movie_t-1.jpg", "2020-0221-115122_010675_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under an elevated expressway, with three same-direction lanes, clear pavement, and heavy stop-and-go flow. A white van directly ahead in the ego lane is stopped because of traffic congestion ahead, holding the ego car at a standstill. To the left front, a silver hatchback in the adjacent lane creeps forward parallel to the ego car, reducing space for a lane change. In the right lane, a white sedan beside the ego vehicle rolls slowly, while a small white microvan farther ahead right remains stopped near the guardrail, both part of the queue. No salient signals or unusual signage are visible.", "hazard_reasoning": "There is a white van stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead. Drivers should stop to avoid colliding with the halted vehicle and maintain a safe following distance."}
{"id": "train_05754", "split": "train", "clip_key": "titan_clip_1186_000576_movie", "source": {"subset": "titan", "scenario": "clip_1186", "frame": "000576"}, "frames": ["titan_clip_1186_000576_movie_t-3.jpg", "titan_clip_1186_000576_movie_t-2.jpg", "titan_clip_1186_000576_movie_t-1.jpg", "titan_clip_1186_000576_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to the stopped vehicle", "environment_perception": "An urban two-way road with one lane in each direction runs between midrise buildings, separated by solid center markings; the pavement is dry and traffic is moderate. On the immediate left in the ego lane, a green truck is stopped with its driver outside beside the cab, partially blocking the lane and constraining progress. A green taxi ahead in the same lane proceeds straight past the obstruction and effectively sets the pace. An oncoming white truck advances in the opposing lane near the centerline, continuing straight and reducing space to pass the stopped vehicle. Pedestrians walk along the left sidewalk behind a fence and stay clear of the roadway.", "hazard_reasoning": "There is a green truck stopped on the left side of the road, in the ego lane, because the driver is outside of their vehicle. You should yield because the stopped truck blocks your lane and the driver may re-enter traffic unexpectedly."}
{"id": "train_05755", "split": "train", "clip_key": "titan_clip_1029_000198_movie", "source": {"subset": "titan", "scenario": "clip_1029", "frame": "000198"}, "frames": ["titan_clip_1029_000198_movie_t-3.jpg", "titan_clip_1029_000198_movie_t-2.jpg", "titan_clip_1029_000198_movie_t-1.jpg", "titan_clip_1029_000198_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the obstruction carefully.", "environment_perception": "An urban commercial alley with a single narrow shared lane and cobblestone-like pavement shows light vehicle traffic and several pedestrians; there is no median and the flow is slow. Ahead in the ego lane, two pedestrians in black-and-white tops walk down the middle, one looking at a cell phone, as they maneuver around a van stopped on the right, and they occupy the vehicle's path. The white van is parked at the right curb with its rear door open, protruding into the lane and narrowing the way. Farther ahead on the left edge, another pedestrian walks in the same direction near the storefronts and stays to the side. Bicycles and a scooter are parked along the right curb, adding minor roadside clutter.", "hazard_reasoning": "There are two pedestrians, both wearing black and white shirts, one looking at a cell phone, walking down the middle of the road in the ego-lane, because they have to maneuver around a parked van. The driver should manoeuvre around the obstruction carefully to avoid collision with the pedestrians."}
{"id": "train_05756", "split": "train", "clip_key": "2020-0227-153144_001223_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "001223"}, "frames": ["2020-0227-153144_001223_movie_t-3.jpg", "2020-0227-153144_001223_movie_t-2.jpg", "2020-0227-153144_001223_movie_t-1.jpg", "2020-0227-153144_001223_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane road with a painted median runs between mid-rise buildings; the pavement is dry and smooth, and traffic is heavy with a slow queue ahead. A silver sedan directly in front of the ego vehicle is stopped in the ego lane because of congestion, holding the ego car. In the adjacent left lane, several cars move slowly alongside in a continuous line, limiting any lane change. Oncoming traffic passes to the right beyond the orange center lines at a moderate pace without interaction.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid rear-ending the halted sedan ahead."}
{"id": "train_05757", "split": "train", "clip_key": "titan_clip_451_000204_movie", "source": {"subset": "titan", "scenario": "clip_451", "frame": "000204"}, "frames": ["titan_clip_451_000204_movie_t-3.jpg", "titan_clip_451_000204_movie_t-2.jpg", "titan_clip_451_000204_movie_t-1.jpg", "titan_clip_451_000204_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately.", "environment_perception": "An urban two-way street with one narrow lane per direction, no median, and smooth pavement comes into view, and traffic is light as the ego vehicle proceeds along the left lane past shops. A black minivan ahead near the left curb moves slowly in the ego lane and constrains the pace. A pedestrian in a black shirt and black pants steps off the right sidewalk and crosses from right to left toward the ego lane, potentially entering the path. Farther ahead, two more pedestrians continue crossing the roadway leftward in the lane ahead. A 30 km/h speed-limit sign is visible on the left.", "hazard_reasoning": "There is a pedestrian in black shirt and black pants, crossing the street from the right side to the left side of the road. The driver should stop to yield right of way and avoid colliding with the pedestrian."}
{"id": "train_05758", "split": "train", "clip_key": "titan_clip_850_000426_movie", "source": {"subset": "titan", "scenario": "clip_850", "frame": "000426"}, "frames": ["titan_clip_850_000426_movie_t-3.jpg", "titan_clip_850_000426_movie_t-2.jpg", "titan_clip_850_000426_movie_t-1.jpg", "titan_clip_850_000426_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban shopping street with a narrow one-lane carriageway and brick paving, no median, carries very light vehicle traffic but many pedestrians; movement is slow. On the right side an oncoming cyclist in a black shirt and black pants rides toward the ego vehicle along the edge and may pass close to its path. Two men ahead to the right walk toward the camera partly in the lane, narrowing the available space. A small delivery cart sits or crawls ahead near the center of the road, limiting speed. No signals or speed signs are clearly visible.", "hazard_reasoning": "There is a cyclist wearing a black shirt and black pants riding a bicycle on the right side of the road towards the ego car. The driver should carefully manoeuvre around the cyclist to avoid a collision.\\n"}
{"id": "train_05759", "split": "train", "clip_key": "2020-0207-151349_020488_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "020488"}, "frames": ["2020-0207-151349_020488_movie_t-3.jpg", "2020-0207-151349_020488_movie_t-2.jpg", "2020-0207-151349_020488_movie_t-1.jpg", "2020-0207-151349_020488_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the slowing truck", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between tall buildings; the asphalt is smooth and a low curb separates a side lane on the right, while traffic is heavy and slow. A white box truck directly ahead in the ego lane slows to a stop because congestion forms ahead, constraining the ego car's pace. A covered medium truck in the adjacent right lane moves slowly parallel near the curb divider, effectively blocking a rightward lane change. Farther ahead in the left lane, another white truck continues slowly with the queue and remains ahead of the ego vehicle. Low sun glare from the front hazes the scene but the roadway remains clear of obstacles.", "hazard_reasoning": "There is a white truck slowing to a stop in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid rear-ending the slowing truck ahead."}
{"id": "train_05760", "split": "train", "clip_key": "2020-0205-103411_061647_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "061647"}, "frames": ["2020-0205-103411_061647_movie_t-3.jpg", "2020-0205-103411_061647_movie_t-2.jpg", "2020-0205-103411_061647_movie_t-1.jpg", "2020-0205-103411_061647_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of cutting-in white sedan", "environment_perception": "An urban arterial with multiple same-direction lanes runs between high-rise buildings; the pavement is smooth, chevron guides are prominent, and a low shrub median on the far right separates oncoming traffic as flow remains moderate. A white kei van ahead in the ego lane cruises steadily and effectively sets the pace. To the right, a white sedan draws alongside then cuts into the ego lane, merging left in front of the ego vehicle and reducing the available gap. A dark sedan travels in the left lane beside the ego car, continuing straight and remaining roughly parallel.", "hazard_reasoning": "There is a white sedan cutting in to the ego lane from the right lane. The sedan's unexpected lane change could enter the ego-vehicle's path, requiring early caution and adjustment."}
{"id": "train_05761", "split": "train", "clip_key": "2020-0220-102630_043280_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "043280"}, "frames": ["2020-0220-102630_043280_movie_t-3.jpg", "2020-0220-102630_043280_movie_t-2.jpg", "2020-0220-102630_043280_movie_t-1.jpg", "2020-0220-102630_043280_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial under an elevated structure, with a fence along the right, has dry, smooth pavement and moderately slow traffic. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. A dark van slightly ahead in the lane to the left travels at a similar speed alongside, limiting passing options. In the right lane another truck runs parallel under the columns and remains in its lane without merging.", "hazard_reasoning": "There's a white truck slowing down in front of the ego car, in the ego lane. The driver should slow down to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_05762", "split": "train", "clip_key": "2020-0207-101955_022569_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "022569"}, "frames": ["2020-0207-101955_022569_movie_t-3.jpg", "2020-0207-101955_022569_movie_t-2.jpg", "2020-0207-101955_022569_movie_t-1.jpg", "2020-0207-101955_022569_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes and a bollard-separated shoulder on the right has smooth pavement and moderate, slow-moving traffic. A white canvas-covered truck directly ahead in the ego lane drives steadily away, keeping its lane and effectively setting the ego vehicle's pace. In the same-direction lane to the left, a black van runs alongside and edges slightly ahead, limiting an immediate lane change. Farther up that left lane, a blue flatbed truck followed by another white truck moves slowly in a short queue, adding to congestion on that side. An overhead straight-ahead blue sign and a signal gantry are visible at the upcoming intersection.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. Since the truck is moving away and no obstacles are present, the lane ahead is clear and the driver can proceed safely by starting to move."}
{"id": "train_05763", "split": "train", "clip_key": "2020-0212-102546_091210_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "091210"}, "frames": ["2020-0212-102546_091210_movie_t-3.jpg", "2020-0212-102546_091210_movie_t-2.jpg", "2020-0212-102546_091210_movie_t-1.jpg", "2020-0212-102546_091210_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "The camera views an urban arterial in Japan with two lanes in the same direction, a tall sound barrier on the left and a narrow side lane on the right; the asphalt is smooth and traffic is moderate but beginning to flow. Ahead in the ego lane a white van starts to accelerate and pull away as congestion eases, setting the ego car's pace. To the right, a white flatbed truck moves slowly in the parallel lane beside the ego close to the solid line, remaining alongside. Farther ahead in the right lane, a box truck continues steadily forward without impeding the ego lane. Overhead blue directional signage is visible; no signals appear.", "hazard_reasoning": "There is a white van starting to drive in front of the ego car in the ego lane, because congestion is easing. The driver should start moving to maintain traffic flow and avoid sudden acceleration when the van pulls away."}
{"id": "train_05764", "split": "train", "clip_key": "2020-0220-102630_102371_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "102371"}, "frames": ["2020-0220-102630_102371_movie_t-3.jpg", "2020-0220-102630_102371_movie_t-2.jpg", "2020-0220-102630_102371_movie_t-1.jpg", "2020-0220-102630_102371_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes and oncoming lanes to the right runs between mid-rise buildings; the pavement is dry and smooth, and traffic is light to moderate as vehicles queue at a signalized intersection. A white truck directly ahead in the ego lane is stopped because the traffic light is red, holding the ego vehicle at the stop line. A white van in the lane to the left waits slightly ahead alongside the truck. A few oncoming vehicles are visible beyond the junction in their lanes and continue without interacting with the ego lane. Overhead signals facing the ego direction display red.", "hazard_reasoning": "There is a white truck stopped in the ego lane because of the red traffic light ahead in the intersection. The stopped truck indicates the need to halt to avoid colliding with stationary traffic under the red signal."}
{"id": "train_05765", "split": "train", "clip_key": "2020-0214-145407_048371_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "048371"}, "frames": ["2020-0214-145407_048371_movie_t-3.jpg", "2020-0214-145407_048371_movie_t-2.jpg", "2020-0214-145407_048371_movie_t-1.jpg", "2020-0214-145407_048371_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three lanes in the ego direction is divided from oncoming traffic by a metal guardrail; the pavement looks dry and smooth and traffic flows at a moderate, steady pace. A white van ahead in the lane to the right proceeds straight at similar speed, running parallel to the ego without encroaching. A dark sedan farther ahead in the ego lane continues straight and modestly sets the pace. A small group of cars including a box truck in the rightmost lane moves alongside and slightly ahead, remaining in their lanes. A pedestrian overpass spans the road ahead, and several parked cars line the left curb outside the travel lane.", "hazard_reasoning": "No hazards are present in the scene, so no warning is needed."}
{"id": "train_05766", "split": "train", "clip_key": "2020-0218-103119_042451_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "042451"}, "frames": ["2020-0218-103119_042451_movie_t-3.jpg", "2020-0218-103119_042451_movie_t-2.jpg", "2020-0218-103119_042451_movie_t-1.jpg", "2020-0218-103119_042451_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban two-way road with two narrow lanes and a painted center divider runs between mid-rise buildings; pavement looks good and traffic is light. A white box truck is stopped directly ahead in the ego lane, blocking the path. In the oncoming lane to the right, a small van approaches and passes by, constraining any attempt to overtake the stopped truck. A side street opens on the left near the truck, and no pedestrians or cyclists are visible.", "hazard_reasoning": "There is a white truck stopped in front of the ego car. The stopped truck blocks the path and visibility, so the driver must halt to avoid a collision."}
{"id": "train_05767", "split": "train", "clip_key": "2020-0212-102546_012076_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "012076"}, "frames": ["2020-0212-102546_012076_movie_t-3.jpg", "2020-0212-102546_012076_movie_t-2.jpg", "2020-0212-102546_012076_movie_t-1.jpg", "2020-0212-102546_012076_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming traffic", "environment_perception": "An urban signalized intersection with smooth pavement and light traffic comes into view. A gray box truck directly ahead in the ego lane is stopped near the stop line, waiting because oncoming traffic on the right side of the two-way road is passing, which holds up the ego vehicle. A silver car in the oncoming lane to the right approaches through the junction and continues ahead, keeping the truck from moving. A small white truck at the far left in the adjacent same-direction lane proceeds with no interaction. Overhead traffic lights and directional signs are visible.", "hazard_reasoning": "There is a gray truck stopped near the intersection, in the ego lane, because of oncoming traffic on the right side of the road. The truck's halt blocks your path, so you must yield to oncoming traffic to avoid collision."}
{"id": "train_05768", "split": "train", "clip_key": "2020-0226-140503_000091_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-140503_000091_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-140503_000091_movie_t-3_augB1.jpg", "2020-0226-140503_000091_movie_t-2_augB1.jpg", "2020-0226-140503_000091_movie_t-1_augB1.jpg", "2020-0226-140503_000091_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "An urban commercial street with two lanes in the ego direction and no median is shown, the asphalt dry and traffic light. A black van is stopped at the left curb with its rear hatch open, protruding into the ego lane and narrowing the path. Ahead of it, a pedestrian wearing black pants and a brown coat and carrying a briefcase crosses mid-block from the left sidewalk toward the right, moving through the ego lane and constraining the vehicle's pace. Several other pedestrians walk along the sidewalks near the storefronts and wait near the curb but do not enter the road. A no-parking sign is posted on a pole by the curb.", "hazard_reasoning": "There is a pedestrian wearing black pants and a brown coat, carrying a briefcase, and crossing the street in the middle of the road from the left to the right side. The driver should yield to allow the pedestrian to cross safely."}
{"id": "train_05769", "split": "train", "clip_key": "2020-0227-104226_089702_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "089702"}, "frames": ["2020-0227-104226_089702_movie_t-3.jpg", "2020-0227-104226_089702_movie_t-2.jpg", "2020-0227-104226_089702_movie_t-1.jpg", "2020-0227-104226_089702_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial curves gently right and passes beneath an elevated structure; the surface is dry and worn, and traffic is heavy and slow. The ego vehicle follows a red SUV directly ahead in the same lane, which slows because congestion compresses near the underpass and it controls our speed. To the left, a white microvan in the adjacent lane creeps forward alongside, matching the slowdown. Farther ahead in the center of our path, a large box truck approaches the underpass and moves slowly, contributing to the queue. A guardrail borders the right edge while another heavy truck advances in the separated right lane.", "hazard_reasoning": "There is a red SUV slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. This indicates traffic congestion ahead, so slow down to maintain a safe following distance."}
{"id": "train_05770", "split": "train", "clip_key": "2020-0225-145150_044770_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "044770"}, "frames": ["2020-0225-145150_044770_movie_t-3.jpg", "2020-0225-145150_044770_movie_t-2.jpg", "2020-0225-145150_044770_movie_t-1.jpg", "2020-0225-145150_044770_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction, no median, and smooth pavement carries heavy, slow-moving traffic in a queued segment. A small blue truck immediately ahead in the ego lane is stopped because of traffic congestion and blocks the ego car's path. In the adjacent right lane ahead, a large white box truck slows to a halt, keeping pace with the queue and limiting forward visibility. Farther left, a silver delivery truck creeps forward alongside the line and remains close to the ego vehicle. Buildings and roadside fencing border the roadway.", "hazard_reasoning": "There is a blue truck stopped in front of the ego car because of traffic congestion ahead. The driver should stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_05771", "split": "train", "clip_key": "2020-0205-103411_092396_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "092396"}, "frames": ["2020-0205-103411_092396_movie_t-3.jpg", "2020-0205-103411_092396_movie_t-2.jpg", "2020-0205-103411_092396_movie_t-1.jpg", "2020-0205-103411_092396_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes and a metal fence median; asphalt appears dry and smooth, and traffic flows light to moderate under bright sun with glare. A white van drives ahead in the ego lane at a steady pace, directly influencing our following distance. A small car in the adjacent left lane travels slightly ahead and continues straight without merging toward the ego lane. On the far side of the median, oncoming traffic of vans and trucks moves steadily to the right and remains separated.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05772", "split": "train", "clip_key": "titan_clip_1304_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1304_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1304_000204_movie_t-3_augB1.jpg", "titan_clip_1304_000204_movie_t-2_augB1.jpg", "titan_clip_1304_000204_movie_t-1_augB1.jpg", "titan_clip_1304_000204_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial alley with smooth textured pavement lacks clear lane markings and functions as a narrow shared two-way street; vehicle flow is light while pedestrian activity is moderate. A pedestrian in a pink skirt carrying a handbag crosses from the left directly in front of the ego vehicle, moving right into the ego path. Another pedestrian stands at the right edge near the corner, pausing to cross and potentially entering the path. Several pedestrians ahead on the left continue walking away along the street, keeping close to the travel way and constraining the ego vehicle's pace.", "hazard_reasoning": "There is a pedestrian wearing a pink skirt and carrying a handbag, crossing the street in front of the ego car, from the left side. Slowing down will reduce the risk of collision by giving the driver more time to react and stop safely if the pedestrian continues into the vehicle's path."}
{"id": "train_05773", "split": "train", "clip_key": "2020-0225-145150_025469_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "025469"}, "frames": ["2020-0225-145150_025469_movie_t-3.jpg", "2020-0225-145150_025469_movie_t-2.jpg", "2020-0225-145150_025469_movie_t-1.jpg", "2020-0225-145150_025469_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane per direction runs past midrise buildings, a metal fence lining the right edge, and smooth pavement; traffic is light to moderate as vehicles approach a signalized intersection. Directly ahead, a blue pickup truck slows to a near stop in front of the ego car because the traffic light ahead is red, so the ego vehicle follows its pace. Slightly ahead to the left, a white car in the same direction creeps forward toward the intersection, remaining beside the truck. A pedestrian walks along the left sidewalk, well clear of the roadway. The overhead signal facing the ego clearly shows red.", "hazard_reasoning": "There is a blue pick-up truck slowing in the right lane in front of the ego-car because of the red traffic light ahead at the intersection. The truck's deceleration indicates an impending stop, so the driver must stop to avoid a collision and maintain a safe following distance."}
{"id": "train_05774", "split": "train", "clip_key": "2020-0207-101955_027257_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "027257"}, "frames": ["2020-0207-101955_027257_movie_t-3.jpg", "2020-0207-101955_027257_movie_t-2.jpg", "2020-0207-101955_027257_movie_t-1.jpg", "2020-0207-101955_027257_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban two-way arterial with two same-direction lanes and no center divider approaches a signalized intersection; the asphalt looks smooth and traffic is moderate. A green box truck directly ahead in the ego lane slows because of traffic congestion ahead, setting the ego vehicle's pace. In the adjacent right lane a white light truck slightly ahead also eases off at the intersection, traveling parallel to the ego path. On the left side at the crosswalk, a cyclist and several pedestrians wait near the curb.", "hazard_reasoning": "There is a green truck slowing in the ego lane because of traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and avoid a collision with the decelerating vehicle."}
{"id": "train_05775", "split": "train", "clip_key": "2020-0226-101332_047322_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "047322"}, "frames": ["2020-0226-101332_047322_movie_t-3.jpg", "2020-0226-101332_047322_movie_t-2.jpg", "2020-0226-101332_047322_movie_t-1.jpg", "2020-0226-101332_047322_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multi-lane arterial curves gently right, with smooth pavement and temporary barriers along the right edge; traffic is moderate and queues at an intersection. A green sedan directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle. In the adjacent lane to the left, a large green city bus ahead slows to a stop at the same queue, partly obscuring the view forward. Slightly ahead to the right, a white sedan in the rightmost lane rolls forward toward the intersection alongside the queue. A small work truck with equipment waits near the front of the line. The traffic signal ahead shows red, and a roadside work zone is visible behind the barriers.", "hazard_reasoning": "There is a green sedan stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver must stop to avoid rear-ending the sedan and comply with the traffic signal."}
{"id": "train_05776", "split": "train", "clip_key": "2020-0204-150838_039576_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "039576"}, "frames": ["2020-0204-150838_039576_movie_t-3.jpg", "2020-0204-150838_039576_movie_t-2.jpg", "2020-0204-150838_039576_movie_t-1.jpg", "2020-0204-150838_039576_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane street with dry, smooth pavement is congested and mostly stopped; all visible lanes carry same-direction traffic. Directly ahead in the ego lane, a van is stopped, consistent with congestion blocking the way forward. To the left front, a silver hatchback in the adjacent lane waits and creeps slightly, but it remains in its lane and does not merge toward the ego path. On the right, a large truck in the neighboring lane is also halted alongside, narrowing lateral clearance. An overhead blue lane-direction sign is visible above the roadway.", "hazard_reasoning": "There is a gray van stopped in front of the ego car because of traffic congestion ahead. The driver should stop because the traffic ahead is congested and may require sudden braking to avoid a collision."}
{"id": "train_05777", "split": "train", "clip_key": "2020-0228-150133_048054_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "048054"}, "frames": ["2020-0228-150133_048054_movie_t-3.jpg", "2020-0228-150133_048054_movie_t-2.jpg", "2020-0228-150133_048054_movie_t-1.jpg", "2020-0228-150133_048054_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multi-lane arterial with a painted striped median and smooth pavement shows heavy, stop-and-go flow. The ego vehicle waits in its left-side lane. A black sedan is stopped immediately ahead in the ego lane because congestion stacks up, blocking the path. A white hatchback in the adjacent same-direction lane to the left creeps forward alongside, inching past while remaining in its lane. On the right, oncoming traffic including a black minivan travels steadily beyond the painted divider without interacting.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop because the congestion ahead has caused the sedan to halt, requiring the ego-vehicle to come to a complete stop to avoid a rear-end collision."}
{"id": "train_05778", "split": "train", "clip_key": "2020-0129-144857_077944_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "077944"}, "frames": ["2020-0129-144857_077944_movie_t-3.jpg", "2020-0129-144857_077944_movie_t-2.jpg", "2020-0129-144857_077944_movie_t-1.jpg", "2020-0129-144857_077944_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in each direction runs straight on smooth asphalt, separated by a guardrail median, and traffic is light to moderate as the view approaches a pedestrian overpass. A small white van travels ahead in the ego lane at midrange, continuing straight in our path so we follow behind. A white truck ahead in the left lane drives away from the ego car, pulling ahead because the space in front of it is clear. Across the median to the right, several oncoming cars move steadily in the opposite lanes without interacting with the ego vehicle. No signals stand out, and no obstacles or work zones are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05779", "split": "train", "clip_key": "titan_clip_1359_000084_movie", "source": {"subset": "titan", "scenario": "clip_1359", "frame": "000084"}, "frames": ["titan_clip_1359_000084_movie_t-3.jpg", "titan_clip_1359_000084_movie_t-2.jpg", "titan_clip_1359_000084_movie_t-1.jpg", "titan_clip_1359_000084_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban commercial street with a single-lane two-way carriageway curves right, with no median and smooth asphalt; traffic is light. A small white van ahead in the ego lane moves slowly toward the right bend, setting the pace. On the left edge of the road, a pedestrian carrying a handbag walks toward the right, stepping toward the lane near the crosswalk and potentially entering the ego path. At the right corner, two pedestrians stand by the zebra crosswalk, positioned to cross in front of the ego vehicle. A marked crosswalk and a pedestrian crossing sign are clearly visible, while rows of parked bicycles and bollards line the sidewalks.", "hazard_reasoning": "There is a pedestrian carrying a handbag, walking on the left side of the road, towards the right side. The driver should yield because the pedestrian may cross into the vehicle's path unexpectedly."}
{"id": "train_05780", "split": "train", "clip_key": "2020-0127-132751_095523_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "095523"}, "frames": ["2020-0127-132751_095523_movie_t-3.jpg", "2020-0127-132751_095523_movie_t-2.jpg", "2020-0127-132751_095523_movie_t-1.jpg", "2020-0127-132751_095523_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for the red light.", "environment_perception": "An urban two-way road with one through lane in the ego direction and an adjacent right-turn lane has worn asphalt and no median, and traffic is moderate but halted at a signal. Ahead in the ego lane, a gray minivan is stopped for the red light, holding the ego vehicle. Farther ahead in the same lane, a tall box truck also waits at the intersection, keeping the queue stationary. In the right-turn lane, a white van proceeds slowly toward the junction as it approaches the turn. A set of traffic lights over the intersection shows red for the ego direction.", "hazard_reasoning": "There is a gray minivan stopped in the ego lane, because of the red traffic light. The driver should stop to comply with the signal and avoid a rear-end collision under this situation."}
{"id": "train_05781", "split": "train", "clip_key": "2020-0131-103016_072377_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "072377"}, "frames": ["2020-0131-103016_072377_movie_t-3.jpg", "2020-0131-103016_072377_movie_t-2.jpg", "2020-0131-103016_072377_movie_t-1.jpg", "2020-0131-103016_072377_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and no physical median shows smooth pavement and heavy, stop-and-go traffic. A white minivan directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle in place. To the right, two large box trucks in the adjacent lanes inch forward in a tight queue, restricting lateral space and sight lines. In the left lane ahead, a red passenger car waits at a standstill in the line of traffic, keeping pace with the jam.", "hazard_reasoning": "There is a white minivan stopped in the ego lane, because of the traffic congestion ahead, in front of the ego car. The driver should stop to avoid colliding with the stationary minivan ahead."}
{"id": "train_05782", "split": "train", "clip_key": "2020-0228-150133_002239_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "002239"}, "frames": ["2020-0228-150133_002239_movie_t-3.jpg", "2020-0228-150133_002239_movie_t-2.jpg", "2020-0228-150133_002239_movie_t-1.jpg", "2020-0228-150133_002239_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the obstruction", "environment_perception": "An urban commercial street with two lanes in the same direction, no physical median, and smooth asphalt carries moderate traffic that slows briefly near a roadside obstruction. A white box truck travels ahead in the ego lane and eases off, setting our pace. Ahead to the left, a silver van is parked intruding into the ego lane, narrowing the passage. In the adjacent right lane, a dark car continues straight to pass the truck. At the right curb, a motorcycle is stopped and a pedestrian stands at the edge of the right lane nearby.", "hazard_reasoning": "There is a silver van parked in the ego lane to the left. The parked van blocks part of the travel lane, requiring the driver to steer around it to avoid collision and maintain lane safety, so the driver should carefully manoeuvre around the obstruction."}
{"id": "train_05783", "split": "train", "clip_key": "2020-0131-103016_008148_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "008148"}, "frames": ["2020-0131-103016_008148_movie_t-3.jpg", "2020-0131-103016_008148_movie_t-2.jpg", "2020-0131-103016_008148_movie_t-1.jpg", "2020-0131-103016_008148_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the scooter", "environment_perception": "An urban multi-lane arterial with smooth pavement runs beneath elevated ramps, with three same-direction lanes and a right-side barrier; traffic is heavy and mostly stopped. A silver scooter directly ahead in the ego lane is stationary at the queue because the signal ahead is red, holding the ego vehicle. Ahead of the scooter, a small white hatchback is also stopped in the same lane and will govern the restart. In the right lane, a white minivan waits slightly ahead and creeps forward with the line. In the left lane, a light-colored sedan and other cars roll slowly alongside without lane changes. Overhead blue direction signs are present, and a 50 sign is visible near the overpass.", "hazard_reasoning": "There is a silver scooter stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid colliding with the halted scooter at the red signal."}
{"id": "train_05784", "split": "train", "clip_key": "2020-0205-103411_088431_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "088431"}, "frames": ["2020-0205-103411_088431_movie_t-3.jpg", "2020-0205-103411_088431_movie_t-2.jpg", "2020-0205-103411_088431_movie_t-1.jpg", "2020-0205-103411_088431_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction and a painted median runs straight through mid-rise buildings; the pavement is dry and smooth, and traffic is moderate, beginning to loosen from earlier slow-moving congestion. Directly ahead in the ego lane, a white hatchback pulls away gradually as congestion eases, setting the ego car's pace. Further ahead in the same lane, a dark flatbed truck rolls slowly, maintaining a short queue that the hatchback follows. In the adjacent right lane, a white SUV travels alongside and then edges ahead, remaining close enough to the ego lane to affect spacing. On the far side of the median, oncoming traffic moves steadily without interacting.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05785", "split": "train", "clip_key": "titan_clip_875_000366_movie", "source": {"subset": "titan", "scenario": "clip_875", "frame": "000366"}, "frames": ["titan_clip_875_000366_movie_t-3.jpg", "titan_clip_875_000366_movie_t-2.jpg", "titan_clip_875_000366_movie_t-1.jpg", "titan_clip_875_000366_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for the pedestrian", "environment_perception": "A narrow urban street with a single undivided lane runs between buildings; the pavement is smooth and traffic is light with no moving vehicles. At the zebra crosswalk ahead, a pedestrian wearing black pants and a black shirt and carrying a handbag crosses from the left to the right, directly across the ego lane and constraining the vehicle's progress. Another pedestrian pair slightly farther ahead also walks across the crosswalk from right to left, keeping the crossing occupied. A white van is parked on the left near the crosswalk, partially blocking sightlines, and orange cones and ropes edge the left side as a temporary barrier.", "hazard_reasoning": "There is a pedestrian wearing black pants, a black shirt, and carrying a handbag, crossing the street at a pedestrian crosswalk, from the left side of the street to the right side. The driver must stop to allow the pedestrian to cross safely, preventing a potential collision."}
{"id": "train_05786", "split": "train", "clip_key": "titan_clip_584_000276_movie", "source": {"subset": "titan", "scenario": "clip_584", "frame": "000276"}, "frames": ["titan_clip_584_000276_movie_t-3.jpg", "titan_clip_584_000276_movie_t-2.jpg", "titan_clip_584_000276_movie_t-1.jpg", "titan_clip_584_000276_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "A narrow urban two-way street runs between mid-rise buildings with no median and smooth pavement marked by bicycle sharrows; traffic is light. Ahead, a pedestrian wearing a black shirt and black pants crosses from the right side to the left directly in front of the ego car, moving steadily across the ego lane and occupying its path. Parked vans and a black SUV line the right curb, narrowing the roadway near the crossing area and leaving limited clearance.", "hazard_reasoning": "A pedestrian wearing a black shirt and black pants, is crossing the street in front of the ego car, from the right side to the left side. The driver should yield to avoid colliding with the pedestrian crossing the road."}
{"id": "train_05787", "split": "train", "clip_key": "2020-0212-102546_076400_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "076400"}, "frames": ["2020-0212-102546_076400_movie_t-3.jpg", "2020-0212-102546_076400_movie_t-2.jpg", "2020-0212-102546_076400_movie_t-1.jpg", "2020-0212-102546_076400_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs straight between mid-rise buildings, with a raised shrub median on the right; the pavement looks smooth and traffic is light. A yellow work truck directly ahead in the ego lane slows slightly as it continues forward, moving away while setting the ego vehicle's pace.", "hazard_reasoning": "There is a yellow truck slowing in front of the ego car, in the ego lane, moving away from the ego car. The slowing truck ahead may require reducing speed and maintaining distance to avoid a rear-end collision."}
{"id": "train_05788", "split": "train", "clip_key": "titan_clip_763_000546_movie", "source": {"subset": "titan", "scenario": "clip_763", "frame": "000546"}, "frames": ["titan_clip_763_000546_movie_t-3.jpg", "titan_clip_763_000546_movie_t-2.jpg", "titan_clip_763_000546_movie_t-1.jpg", "titan_clip_763_000546_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban shopping street with a single mixed-traffic lane and no median is shown; the pavement is smooth and there is no vehicular traffic, while pedestrian flow is moderate. On the left edge near the ego path, a pedestrian wearing black shorts and a pink T-shirt carries a handbag and walks toward the vehicle, possibly stepping into the lane. Just ahead on the left, two pedestrians, one holding an umbrella, walk toward the ego vehicle close to the edge, influencing pace. Farther ahead near the lane center, a person walks along the roadway toward the right side, occupying the travel path. On the right by the curb, another person stands at a storefront menu board, stationary but close to the roadway. Several restaurant signboards protrude from the right, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing black shorts and a pink t-shirt, carrying a handbag, who is walking on the left side of the road towards the ego car. The driver should carefully manoeuvre around the pedestrian to maintain safety and prevent a collision."}
{"id": "train_05789", "split": "train", "clip_key": "2020-0207-151349_007725_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "007725"}, "frames": ["2020-0207-151349_007725_movie_t-3.jpg", "2020-0207-151349_007725_movie_t-2.jpg", "2020-0207-151349_007725_movie_t-1.jpg", "2020-0207-151349_007725_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with opposing lanes and a central yellow line passes between mid-rise buildings; the pavement is smooth and traffic is light as the view approaches a marked crosswalk. A man wearing black and carrying a backpack crosses from the right to the left on the crosswalk ahead, directly across the ego lane. Another pedestrian in dark clothing crosses left to right slightly ahead on the same crosswalk, also occupying the ego path. An oncoming white van approaches in the opposite lane and slows near the crossing. A pedestrian crossing sign is mounted above the roadway.", "hazard_reasoning": "There is a man wearing black clothing, carrying a backpack, and crossing the street at a crosswalk from the right side to the left side of the road. The driver should stop to yield to the pedestrian and prevent a potential collision under this situation."}
{"id": "train_05790", "split": "train", "clip_key": "2020-0129-105040_048157_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "048157"}, "frames": ["2020-0129-105040_048157_movie_t-3.jpg", "2020-0129-105040_048157_movie_t-2.jpg", "2020-0129-105040_048157_movie_t-1.jpg", "2020-0129-105040_048157_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs beneath an elevated expressway, with three same-direction lanes, a right-side guardrail and a left-side curb; the dry pavement is smooth and traffic is light and steady. A white box truck ahead in the left lane cruises slowly near the curb, setting the pace for that lane. Farther ahead in the ego lane, a small white van continues straight at a moderate speed, defining the following distance for the ego vehicle. Additional cars farther under the viaduct proceed straight in their lanes, keeping gaps and guiding the flow ahead. Overhead blue direction signs span the roadway, and no pedestrians or cyclists are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05791", "split": "train", "clip_key": "2020-0226-101332_010793_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "010793"}, "frames": ["2020-0226-101332_010793_movie_t-3.jpg", "2020-0226-101332_010793_movie_t-2.jpg", "2020-0226-101332_010793_movie_t-1.jpg", "2020-0226-101332_010793_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way, one-lane road with no median leads to a signalized intersection; the asphalt is dry and traffic is moderate. A bicyclist rides ahead slightly right within the ego lane, continuing straight and limiting the ego vehicle's pace. Several oncoming vehicles, including a van and small trucks, proceed through the junction in their lane on the right and pass opposite the ego. At the right side of the intersection, pedestrians wait on the corner beside a pedestrian crossing that spans the side street, matching the noted presence of a crossing there.", "hazard_reasoning": "There is a pedestrian crossing to the right side of the intersection in front of the ego car. The driver should stop to yield to the pedestrian and avoid a collision."}
{"id": "train_05792", "split": "train", "clip_key": "2020-0227-104226_033838_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-104226_033838_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-104226_033838_movie_t-3_augB1.jpg", "2020-0227-104226_033838_movie_t-2_augB1.jpg", "2020-0227-104226_033838_movie_t-1_augB1.jpg", "2020-0227-104226_033838_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "A narrow urban street with smooth asphalt and no median runs straight toward a signalized intersection, and traffic is moderate. Directly ahead, a white box truck in the ego lane signals and shifts right, changing into the adjacent right lane in front of the ego and momentarily controlling the ego's pace. To the right of the ego, a small silver hatchback creeps forward near the lane line, narrowing the gap into which the truck merges. Farther ahead in the right lane, another truck proceeds slowly near the crosswalk, contributing to the slow flow.", "hazard_reasoning": "There is a white truck lane changing in front of the ego car, to the right lane. The truck's lane change may reduce the gap or speed, so the driver should follow the vehicle ahead to maintain a safe distance and anticipate its movement."}
{"id": "train_05793", "split": "train", "clip_key": "2020-0220-151845_036396_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "036396"}, "frames": ["2020-0220-151845_036396_movie_t-3.jpg", "2020-0220-151845_036396_movie_t-2.jpg", "2020-0220-151845_036396_movie_t-1.jpg", "2020-0220-151845_036396_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated expressway carries two same-direction lanes with smooth pavement and side railings; traffic is moderate and mostly steady. Ahead in the ego lane, a red flatbed truck slows and decelerates, constraining the ego car's pace. In the adjacent right lane, a white van and a silver hatchback continue forward slightly faster alongside, remaining in their lane and not entering the ego path. Bicycles line the left sidewalk, and no hazards or unusual traffic controls are apparent.", "hazard_reasoning": "There is a red truck slowing in the ego lane, in front of the ego car. The truck's sudden speed reduction increases collision risk, so the driver should slow down to maintain a safe following distance."}
{"id": "train_05794", "split": "train", "clip_key": "2020-0218-103119_042535_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "042535"}, "frames": ["2020-0218-103119_042535_movie_t-3.jpg", "2020-0218-103119_042535_movie_t-2.jpg", "2020-0218-103119_042535_movie_t-1.jpg", "2020-0218-103119_042535_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane per direction and double solid centerlines runs between apartment buildings; the pavement is smooth and traffic is light. A silver box truck is stopped directly ahead in the ego lane, blocking the path and bringing the ego vehicle to a halt. An oncoming car approaches on the right in its lane and passes by, limiting any immediate opportunity to go around the truck. Farther ahead on the right shoulder, a white car is parked near the curb but remains outside the ego lane.", "hazard_reasoning": "There is a silver truck stopped in front of the ego car, in the ego lane. The stopped truck ahead blocks your lane, so you must stop to avoid a collision."}
{"id": "train_05795", "split": "train", "clip_key": "2020-0131-103016_007904_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "007904"}, "frames": ["2020-0131-103016_007904_movie_t-3.jpg", "2020-0131-103016_007904_movie_t-2.jpg", "2020-0131-103016_007904_movie_t-1.jpg", "2020-0131-103016_007904_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under elevated structures carries three same-direction lanes with a right concrete barrier and good pavement; traffic is moderate and forms a short queue near an intersection. A white motorcycle ahead in the ego lane slows and stops for a red traffic light, directly occupying the path and setting the pace. Slightly farther ahead a black sedan in the middle lane continues straight and then brakes with the forming queue, remaining in its lane. A silver hatchback to the left travels parallel at similar speed without encroaching. The signal at the junction shows red as vehicles line up beneath a pedestrian overpass.", "hazard_reasoning": "There is a white motorcycle stopped in the ego lane, because of a red traffic light. The driver should slow down to avoid colliding with the stopped motorcycle and comply with the traffic signal."}
{"id": "train_05796", "split": "train", "clip_key": "2020-0131-135401_052403_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "052403"}, "frames": ["2020-0131-135401_052403_movie_t-3.jpg", "2020-0131-135401_052403_movie_t-2.jpg", "2020-0131-135401_052403_movie_t-1.jpg", "2020-0131-135401_052403_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement carries light to moderate same-direction traffic under clear skies, with three lanes in the ego's direction and no physical median visible. A flatbed truck runs just ahead along the left curb lane at a slower pace, reducing lateral clearance as the ego passes. A black minivan ahead in the right adjacent lane continues straight slightly faster, overtaking without signaling any lane change. Farther ahead in the ego lane, a gray sedan is stopped because of congestion, causing the ego to approach at a reduced speed. Overhead gantry signs span the roadway, and the lane markings indicate through and right-turn movements.", "hazard_reasoning": "There's a gray sedan stopped ahead in the ego-lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a collision with the stopped vehicle."}
{"id": "train_05797", "split": "train", "clip_key": "2020-0220-102630_016513_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "016513"}, "frames": ["2020-0220-102630_016513_movie_t-3.jpg", "2020-0220-102630_016513_movie_t-2.jpg", "2020-0220-102630_016513_movie_t-1.jpg", "2020-0220-102630_016513_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multi-lane road with two same-direction lanes curves gently right amid midrise buildings; the pavement looks smooth and traffic is heavy and stop-and-go. A white sedan directly ahead in the ego lane is stopped because congestion blocks the lane. In the adjacent right lane beside and slightly ahead, several small trucks crawl forward, constraining any attempt to merge. Farther ahead in the ego lane, a tall box truck remains queued and sets the slow pace for vehicles behind.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid rear-ending the halted vehicle."}
{"id": "train_05798", "split": "train", "clip_key": "2020-0206-142535_033317_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "033317"}, "frames": ["2020-0206-142535_033317_movie_t-3.jpg", "2020-0206-142535_033317_movie_t-2.jpg", "2020-0206-142535_033317_movie_t-1.jpg", "2020-0206-142535_033317_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided avenue with two lanes in the ego direction and a metal-railed median appears, the pavement is clean and traffic is light. A white van ahead in the ego lane pulls away as the road ahead is clear, opening space in our path. On the opposite carriageway beyond the barrier, a large coach and several cars approach steadily as oncoming traffic with no access to the ego lane. Large 50 markings on the roadway indicate a posted speed of 50.", "hazard_reasoning": "There is a white van driving away from the ego car, in the ego lane, because the road ahead is clear, in front of the ego car. The driver should accelerate smoothly to maintain a safe following distance under this situation to avoid creating unexpected gaps or over-speeding relative to the van."}
{"id": "train_05799", "split": "train", "clip_key": "2020-0221-115122_012393_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "012393"}, "frames": ["2020-0221-115122_012393_movie_t-3.jpg", "2020-0221-115122_012393_movie_t-2.jpg", "2020-0221-115122_012393_movie_t-1.jpg", "2020-0221-115122_012393_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "Inside a lit urban tunnel, the ego car travels on a two-lane road with concrete walls and a right-side guardrail; the dry pavement looks smooth and traffic is heavy and slow. A white van directly ahead in the ego lane slows to a crawl because of congestion and constrains the ego car's speed. In the adjacent right lane, a silver car moves slowly alongside and slightly ahead in the same direction while maintaining its lane. No notable signals or signs are visible, and there are no obstacles besides the confined tunnel structure.", "hazard_reasoning": "There is a white van slowing in the ego lane in front of the ego car, because of traffic congestion. The driver should slow down to maintain a safe following distance and avoid collision with the slowing vehicle."}
{"id": "train_05800", "split": "train", "clip_key": "2020-0225-102455_052036_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "052036"}, "frames": ["2020-0225-102455_052036_movie_t-3.jpg", "2020-0225-102455_052036_movie_t-2.jpg", "2020-0225-102455_052036_movie_t-1.jpg", "2020-0225-102455_052036_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs on dry, well-kept asphalt, with a fenced grass median on the right separating oncoming traffic; overall flow is moderate and steady. A silver van drives ahead in the ego lane at a steady pace and effectively sets our speed. In the left lane slightly ahead, a white minivan moves past curbside parked vehicles and continues parallel without encroaching. At the far left edge near the camera, a cyclist travels forward along the curb while staying outside the traffic lanes. Oncoming vehicles proceed independently on the far side of the median.", "hazard_reasoning": "There is a silver van driving in front of the ego car, in the ego lane. The driver should follow the vehicle ahead to maintain a safe distance and be prepared for any sudden braking by the van."}
{"id": "train_05801", "split": "train", "clip_key": "titan_clip_570_000510_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_570_000510_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_570_000510_movie_t-3_augB1.jpg", "titan_clip_570_000510_movie_t-2_augB1.jpg", "titan_clip_570_000510_movie_t-1_augB1.jpg", "titan_clip_570_000510_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with a single lane in each direction has no median, smooth dry pavement, and light traffic, with several cars parked along the left curb. The ego vehicle proceeds straight at a steady pace. A small white van ahead in the same direction travels slowly away and effectively sets the pace. On the left edge, a white car is stopped at the curb and a pedestrian wearing blue pants and a checkered shirt gets out beside it, the open door close to the travel lane and possibly entering the path. On the right sidewalk, another pedestrian walks along the fence parallel to traffic and remains clear of the roadway.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a checkered shirt getting out of his vehicle on the left side of the road. The pedestrian could step into the lane unexpectedly, so the driver should carefully manoeuvre around him to avoid a collision."}
{"id": "train_05802", "split": "train", "clip_key": "2020-0220-102630_109626_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "109626"}, "frames": ["2020-0220-102630_109626_movie_t-3.jpg", "2020-0220-102630_109626_movie_t-2.jpg", "2020-0220-102630_109626_movie_t-1.jpg", "2020-0220-102630_109626_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban two-way road has a single through lane in the ego direction with painted dividers and smooth pavement; traffic flow is moderate. A silver box truck directly ahead in the ego lane slows and prepares a left turn into a side street, holding our pace. Oncoming traffic in the opposite lane, including a white minivan and a small van, proceeds past steadily without encroaching. An overhead blue guide sign is visible above the roadway. A cyclist rides along the left sidewalk parallel to us and remains separated by a curb, while a few parked vehicles line the curb without obstructing the lane.", "hazard_reasoning": "There is a silver truck slowing in the ego lane, in front of the ego car, because they are making a left turn. The ego-vehicle should slow down to maintain a safe following distance and avoid collision with the turning truck."}
{"id": "train_05803", "split": "train", "clip_key": "2020-0227-153144_039520_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "039520"}, "frames": ["2020-0227-153144_039520_movie_t-3.jpg", "2020-0227-153144_039520_movie_t-2.jpg", "2020-0227-153144_039520_movie_t-1.jpg", "2020-0227-153144_039520_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane roadway runs through a commercial district with smooth asphalt and clear markings, and opposing traffic is on the right; overall flow is moderate and gradually compressing ahead. A white van directly ahead in the ego lane slows as vehicles bunch up, constraining the ego car's pace. In the adjacent right same-direction lane, a dark sedan cruises slightly ahead at a similar speed without changing lanes. Oncoming cars move steadily in their lanes to the far right, and sidewalks are lined with guardrails and shops.", "hazard_reasoning": "There is a white van slowing in the ego-car lane, because of traffic congestion ahead. The driver should slow down to maintain a safe gap and adapt to the reduced speed of the vehicle ahead."}
{"id": "train_05804", "split": "train", "clip_key": "titan_clip_142_000384_movie", "source": {"subset": "titan", "scenario": "clip_142", "frame": "000384"}, "frames": ["titan_clip_142_000384_movie_t-3.jpg", "titan_clip_142_000384_movie_t-2.jpg", "titan_clip_142_000384_movie_t-1.jpg", "titan_clip_142_000384_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian.", "environment_perception": "An urban two-way street with one narrow lane per direction and no median, the pavement dry and smooth, carries light traffic as the ego vehicle approaches an intersection with marked crosswalks. Ahead in the middle of the road, a pedestrian in a blue shirt and black pants with a cap, talking on a phone, walks left to right across the lane, directly in the ego path. A small silver car ahead in the same lane slows near the crosswalk, constraining the ego vehicle's pace. Several other pedestrians stand at the curbs on both sides, including at the right crosswalk, close to the roadway. A blue car is parked at the left curb near the camera with a door open near the lane edge.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, black pants, wearing a cap, and talking on a phone, in the middle of the road, crossing the street from the left side of the street to the right side. The driver should yield to the pedestrian to avoid a collision in the crosswalk."}
{"id": "train_05805", "split": "train", "clip_key": "titan_clip_594_000252_movie", "source": {"subset": "titan", "scenario": "clip_594", "frame": "000252"}, "frames": ["titan_clip_594_000252_movie_t-3.jpg", "titan_clip_594_000252_movie_t-2.jpg", "titan_clip_594_000252_movie_t-1.jpg", "titan_clip_594_000252_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with a single lane in each direction and no median has smooth pavement and very light vehicle traffic. Two pedestrians ahead in the middle of the ego lane walk away from the vehicle, one carrying a handbag, and they constrain the pace. A third pedestrian on the right by the storefront walks toward the camera along the curb and could step into the lane. Shopfront banners and building facades sit close to the roadway, narrowing the available space.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and, walking in the middle of the road, away from the ego-car. The driver should carefully manoeuvre to avoid collision with the pedestrian."}
{"id": "train_05806", "split": "train", "clip_key": "titan_clip_264_000066_movie", "source": {"subset": "titan", "scenario": "clip_264", "frame": "000066"}, "frames": ["titan_clip_264_000066_movie_t-3.jpg", "titan_clip_264_000066_movie_t-2.jpg", "titan_clip_264_000066_movie_t-1.jpg", "titan_clip_264_000066_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "A narrow urban residential street with a single vehicle lane runs straight through a green-painted school zone; the pavement is smooth and a metal railing lines the right-side walkway, with no median. Traffic is very light with no moving vehicles visible. Ahead on the left, a pedestrian wearing a black shirt walks away from the ego vehicle along the curbside, parallel to the road, remaining close enough to be relevant to the ego lane. School zone wording and a forward arrow are painted on the surface, and a few parked vehicles sit to the left behind a fence.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, walking on the left side of the road, away from the ego car. The driver should be aware because the pedestrian may step onto the crossing or change direction unexpectedly."}
{"id": "train_05807", "split": "train", "clip_key": "titan_clip_1290_000516_movie", "source": {"subset": "titan", "scenario": "clip_1290", "frame": "000516"}, "frames": ["titan_clip_1290_000516_movie_t-3.jpg", "titan_clip_1290_000516_movie_t-2.jpg", "titan_clip_1290_000516_movie_t-1.jpg", "titan_clip_1290_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian unloading truck", "environment_perception": "An urban multilane arterial with three same-direction lanes and a fenced median to the right is slightly wet, and traffic is moderate as the road approaches an overpass. On the far left, two box trucks are stopped with rear doors open, partly blocking the left lane. Next to the nearer truck, a pedestrian in black stands in the left lane beside the open cargo area as items are handled, and he may step into the ego lane. Ahead in the center lane, a white hatchback travels steadily away and sets the pace. Farther ahead, a small white van continues straight in the same direction. Oncoming vehicles move on the opposite carriageway beyond the fence.", "hazard_reasoning": "A pedestrian wearing all black is standing in the left lane, because he is unloading a truck. This pedestrian occupies a travel lane and may move into traffic unexpectedly, creating a collision risk for the driver."}
{"id": "train_05808", "split": "train", "clip_key": "2020-0227-104226_087058_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "087058"}, "frames": ["2020-0227-104226_087058_movie_t-3.jpg", "2020-0227-104226_087058_movie_t-2.jpg", "2020-0227-104226_087058_movie_t-1.jpg", "2020-0227-104226_087058_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial carries two-way traffic, with two same-direction lanes for the ego separated from oncoming lanes by a painted chevron median; pavement is dry and traffic is heavy and slow. The ego travels in the right lane. A red car directly ahead in the ego lane slows and creeps because of traffic congestion ahead, constraining the ego's pace. Farther ahead, a white box truck in the adjacent left same-direction lane also moves slowly as part of the queue. To the right across the median, a large oncoming truck approaches in its near lane with another car nearby, both clearly separated from the ego's path. No salient signals or hazards are visible.", "hazard_reasoning": "There is a red car, slowing, in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of the vehicle ahead."}
{"id": "train_05809", "split": "train", "clip_key": "titan_clip_1105_000306_movie", "source": {"subset": "titan", "scenario": "clip_1105", "frame": "000306"}, "frames": ["titan_clip_1105_000306_movie_t-3.jpg", "titan_clip_1105_000306_movie_t-2.jpg", "titan_clip_1105_000306_movie_t-1.jpg", "titan_clip_1105_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking toward you", "environment_perception": "A narrow urban shopping street without lane markings or a median has smooth pavement and light traffic with no moving vehicles. On the left edge ahead, a pedestrian in a white shirt and black pants carrying a handbag walks toward the ego vehicle as storefronts are open, potentially edging into the lane. Farther ahead near the center-right, two pedestrians walk toward the ego vehicle along the curb and narrow the available space. Additional people linger by left-side shops but remain off the roadway. A no-parking sign is posted on a left wall, and parked scooters and bins line both curbs, further tightening the corridor.", "hazard_reasoning": "a pedestrian wearing a white shirt with a black pant and carrying a handbag is walking on the left side of the road toward the ego car because of the opened stores. The pedestrian may step into the driving lane unexpectedly, so the driver should be aware to avoid any collision."}
{"id": "train_05810", "split": "train", "clip_key": "titan_clip_733_000168_movie", "source": {"subset": "titan", "scenario": "clip_733", "frame": "000168"}, "frames": ["titan_clip_733_000168_movie_t-3.jpg", "titan_clip_733_000168_movie_t-2.jpg", "titan_clip_733_000168_movie_t-1.jpg", "titan_clip_733_000168_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban street lined with small shops and houses stretches ahead, appearing as a single-lane roadway without a median; pavement is smooth and traffic is light with no moving vehicles visible. A small side street joins from the left near the foreground. On the right edge just ahead, a parked scooter and a bicycle with a standing sign jut into the roadway, slightly narrowing the usable lane. Another bicycle is parked by the fence on the left near a utility pole. A convex mirror is mounted at the left corner by the side street, and a forward arrow is painted on the road surface.", "hazard_reasoning": "There are no apparent hazards requiring driver intervention on this clear, empty road."}
{"id": "train_05811", "split": "train", "clip_key": "titan_clip_330_000066_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_330_000066_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_330_000066_movie_t-3_augB1.jpg", "titan_clip_330_000066_movie_t-2_augB1.jpg", "titan_clip_330_000066_movie_t-1_augB1.jpg", "titan_clip_330_000066_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "An urban commercial street with a single narrow shared lane and brick pavement runs between dense shopfronts; there is no divider and vehicle traffic is light while pedestrian activity is heavy. The surface appears even and dry, and the scene stays slow-paced with frequent crossings. A pedestrian in a white T-shirt carrying a handbag crosses immediately in front of the ego car from right to left, entering the vehicle's path. Another person in dark clothing crosses slightly farther ahead from left to right at the same point, occupying the lane momentarily. Several pedestrians walk ahead along the center of the lane in the same direction as the ego vehicle, reducing clearance and constraining progress. Bollards and curb edges line both sides, further narrowing the approach.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, carrying a handbag, crossing the street in front of the ego car, from the right side to the left side. The driver should yield to the crossing pedestrian to avoid a potential collision."}
{"id": "train_05812", "split": "train", "clip_key": "titan_clip_756_000306_movie", "source": {"subset": "titan", "scenario": "clip_756", "frame": "000306"}, "frames": ["titan_clip_756_000306_movie_t-3.jpg", "titan_clip_756_000306_movie_t-2.jpg", "titan_clip_756_000306_movie_t-1.jpg", "titan_clip_756_000306_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around pedestrians", "environment_perception": "An urban two-way street with a single narrow lane per direction has no median and smooth pavement; traffic is light as the ego vehicle proceeds in the left lane toward a small intersection with a marked crosswalk. Two pedestrians walking together on the right enter the crosswalk and move left across the ego lane in front of the vehicle, constraining its pace. A small white van farther ahead in the same direction continues straight and pulls away. Another pedestrian farther ahead keeps to the left sidewalk and does not enter the roadway. Blue pedestrian crossing signs on both sides of the street highlight the crossing.", "hazard_reasoning": "There are two women walking together on the right side of the intersection, away from the ego car. The driver should manoeuvre carefully around the pedestrians to avoid a potential collision as they may step into the roadway unexpectedly."}
{"id": "train_05813", "split": "train", "clip_key": "2020-0220-151845_055587_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "055587"}, "frames": ["2020-0220-151845_055587_movie_t-3.jpg", "2020-0220-151845_055587_movie_t-2.jpg", "2020-0220-151845_055587_movie_t-1.jpg", "2020-0220-151845_055587_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multilane road runs under an elevated structure, with a concrete wall on the left; the pavement is in good condition and traffic is heavy and slow. A pink truck with a yellow-covered load is directly ahead in the ego lane and slows because of congestion further up, constraining the ego vehicle. To the right, a black sedan travels alongside in the adjacent lane, inching forward and reducing room to change lanes. Farther ahead in the neighboring lanes, several silver vans and cars queue tightly and intermittently stop, sustaining the jam. A blue overhead sign provides route directions.", "hazard_reasoning": "There is a pink and yellow truck slowing down in the ego lane, because of traffic congestion ahead. The slowing truck indicates reduced traffic flow, so the driver should adjust speed to avoid sudden braking or collision."}
{"id": "train_05814", "split": "train", "clip_key": "2020-0217-144444_008571_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "008571"}, "frames": ["2020-0217-144444_008571_movie_t-3.jpg", "2020-0217-144444_008571_movie_t-2.jpg", "2020-0217-144444_008571_movie_t-1.jpg", "2020-0217-144444_008571_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs straight between mid-rise buildings, with dry, well-marked pavement and moderate same-direction traffic approaching a signaled intersection ahead. A black sedan ahead in the adjacent right lane continues straight at a steady speed, staying in its lane and not impeding the ego vehicle. Farther ahead in the center lanes, a small box truck slows as it nears the intersection, setting the pace for traffic in front. On the left sidewalk, a group of pedestrians walks parallel to the road near shopfronts, remaining on the curb and not entering the roadway. Overhead traffic signals and a crosswalk span the junction in the distance.", "hazard_reasoning": "The traffic light is red, and the green tarp-covered truck ahead may obscure vehicles in the right lane, requiring the driver to prepare to stop to avoid running the light or colliding with stopped traffic."}
{"id": "train_05815", "split": "train", "clip_key": "2020-0228-150133_081298_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "081298"}, "frames": ["2020-0228-150133_081298_movie_t-3.jpg", "2020-0228-150133_081298_movie_t-2.jpg", "2020-0228-150133_081298_movie_t-1.jpg", "2020-0228-150133_081298_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs straight, separated from oncoming lanes by a planted median; the pavement is dry and in good condition, and traffic is light. A gray van ahead in the ego lane drives away steadily, opening the gap and setting the immediate pace. Farther ahead in the right lane, a dark car continues straight at similar speed and stays clear of the ego lane. Oncoming vehicles on the far side of the median pass intermittently and remain isolated from the ego path.", "hazard_reasoning": "There is a gray van driving in the ego lane, away from the ego car. The van blocks the driver's view of the road ahead, so maintaining a safe following distance and following cautiously is advised."}
{"id": "train_05816", "split": "train", "clip_key": "2020-0129-105040_061829_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061829"}, "frames": ["2020-0129-105040_061829_movie_t-3.jpg", "2020-0129-105040_061829_movie_t-2.jpg", "2020-0129-105040_061829_movie_t-1.jpg", "2020-0129-105040_061829_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of white van", "environment_perception": "A narrow urban residential two-way road with red-painted shoulders and no median runs straight on clean pavement, and traffic is light. A white van approaches ahead on the right side of the road, moving toward the ego vehicle in the oncoming lane. On the left sidewalk near the curb, a pedestrian walks away from the camera beside short bollards and stays off the roadway. Bicycles are parked along the left edge but remain stationary and do not obstruct the travel lane.", "hazard_reasoning": "There is a white van driving on the right side of the road, towards the ego car. The driver needs to be aware of the approaching van to maintain safe clearance and anticipate any sudden movements."}
{"id": "train_05817", "split": "train", "clip_key": "2020-0205-152530_028615_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "028615"}, "frames": ["2020-0205-152530_028615_movie_t-3.jpg", "2020-0205-152530_028615_movie_t-2.jpg", "2020-0205-152530_028615_movie_t-1.jpg", "2020-0205-152530_028615_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with smooth pavement and a separated right-turn lane on the right; traffic in our direction is queued and slow at a signal. A gray minivan is stopped directly ahead in the ego lane for a red light, holding our vehicle in place. To the left, a red hatchback alongside creeps forward in the adjacent through lane but remains in its lane. Farther ahead in that left lane, a white van idles with brake lights on, contributing to the queue. The traffic signal visible ahead shows red over the intersection, and the right-turn-only lane appears clear.", "hazard_reasoning": "There is a gray minivan stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The minivan's halted position at the red signal means the driver must stop to maintain safe distance and comply with traffic rules."}
{"id": "train_05818", "split": "train", "clip_key": "2020-0213-143552_055979_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_055979_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_055979_movie_t-3_augB1.jpg", "2020-0213-143552_055979_movie_t-2_augB1.jpg", "2020-0213-143552_055979_movie_t-1_augB1.jpg", "2020-0213-143552_055979_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction approaches an intersection beneath an elevated expressway, separated from oncoming lanes by painted medians; the pavement is smooth and traffic is moderate. A large white box truck directly ahead in the ego lane slows, constraining the ego car's pace. In the adjacent right same-direction lane, two small vans continue forward at a steady speed and may pass the ego vehicle as they clear the slowing truck. On the right sidewalk near the crosswalk, a pedestrian waits at the curb without stepping into the roadway. Oncoming vehicles travel independently on the far side of the median with no immediate interaction.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The truck's deceleration reduces available stopping distance, so the driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_05819", "split": "train", "clip_key": "2020-0213-143552_038316_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "038316"}, "frames": ["2020-0213-143552_038316_movie_t-3.jpg", "2020-0213-143552_038316_movie_t-2.jpg", "2020-0213-143552_038316_movie_t-1.jpg", "2020-0213-143552_038316_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban road runs under an elevated structure with two same-direction lanes and no physical median; the pavement is dry and in good condition, and traffic is light. A white box truck drives ahead in the ego lane, moving away and setting the pace. To the right, a gray minivan in the adjacent lane pulls slightly ahead while continuing straight, remaining in its lane. Sidewalks and fencing line both sides, and no obstacles intrude into the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The truck obstructs the driver's view of the road ahead, so the driver should be aware of potential hazards like sudden slow-downs or obstacles."}
{"id": "train_05820", "split": "train", "clip_key": "2020-0131-135401_053844_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-135401_053844_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-135401_053844_movie_t-3_augB1.jpg", "2020-0131-135401_053844_movie_t-2_augB1.jpg", "2020-0131-135401_053844_movie_t-1_augB1.jpg", "2020-0131-135401_053844_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with three lanes in the ego direction runs between tall buildings, divided from opposing traffic by a guardrail on the right; the dry pavement is smooth and traffic is moderate. Far ahead an overhead gantry marks an intersection with signals. A black motorcycle ahead in the ego lane slows as it approaches the traffic signal, briefly constraining the ego car's pace. A white van slightly farther ahead in the right lane continues straight at a steady speed, keeping a similar gap to traffic ahead. A white sedan ahead in the left lane also proceeds straight and maintains its lane. An overhead no-right-turn sign is visible, and blue guide signs for through routes appear above; bicycles are parked along the left sidewalk.", "hazard_reasoning": "There is a black motorcycle slowing in the ego lane, in front of the ego car, because of a red traffic light ahead. The motorcycle is decelerating sharply due to the red light, requiring the driver to also reduce speed to maintain safety and avoid a collision."}
{"id": "train_05821", "split": "train", "clip_key": "2020-0131-135401_033256_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "033256"}, "frames": ["2020-0131-135401_033256_movie_t-3.jpg", "2020-0131-135401_033256_movie_t-2.jpg", "2020-0131-135401_033256_movie_t-1.jpg", "2020-0131-135401_033256_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the cyclist", "environment_perception": "An urban two-way street with one lane each direction and a yellow centerline stretches ahead on smooth pavement, and traffic is light while the car proceeds straight; the opposing lane is mostly clear of oncoming vehicles. A white car ahead in the ego lane moves steadily away and lightly sets the pace. On the left side ahead, a cyclist wearing a cap and a brown jacket rides along the curb in the same direction away from the ego vehicle, close enough to be relevant as we approach. Two pedestrians walk along the left sidewalk beside utility poles and plantings and do not enter the roadway.", "hazard_reasoning": "There is a cyclist wearing a cap and brown jacket, cycling on the left side of the road, away from the ego car. You should manoeuvre around the cyclist to maintain a safe buffer and avoid collision."}
{"id": "train_05822", "split": "train", "clip_key": "2020-0228-102841_035261_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "035261"}, "frames": ["2020-0228-102841_035261_movie_t-3.jpg", "2020-0228-102841_035261_movie_t-2.jpg", "2020-0228-102841_035261_movie_t-1.jpg", "2020-0228-102841_035261_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with multiple same-direction lanes and a narrow post-lined median runs straight on smooth pavement, and traffic is light to moderate. Ahead in the ego lane a black SUV accelerates from the stop line as the overhead signal shows green, briefly setting the pace but pulling away. In the adjacent left lane a white sedan near the line holds position and rolls forward parallel to the ego vehicle without encroaching. Across the median, oncoming traffic moves steadily in the opposite carriageway with no interaction. A roadside sign on the right indicates a restricted turn.", "hazard_reasoning": "There is a black SUV accelerating in front of the ego car, in the ego lane, because of a green traffic light. You should start moving to follow the vehicle ahead and avoid impeding traffic at the green signal."}
{"id": "train_05823", "split": "train", "clip_key": "2020-0205-152530_047587_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "047587"}, "frames": ["2020-0205-152530_047587_movie_t-3.jpg", "2020-0205-152530_047587_movie_t-2.jpg", "2020-0205-152530_047587_movie_t-1.jpg", "2020-0205-152530_047587_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the truck.", "environment_perception": "In a dense urban area, the ego car moves along a multi-lane same-direction road with smooth red pavement and clear channelization, and traffic is moderate, forming a queue at an intersection. A white box truck directly ahead in the ego lane is stopped at a red light, holding the ego vehicle. To the right, a black hatchback in the adjacent lane also stops alongside, limiting any chance to pass. Farther ahead, several cars in the right lanes slow and wait under the signal, extending the line toward the junction. Overhead traffic lights show red for this approach, and directional signs are visible while sidewalks and planted strips border the roadway.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of a red traffic light. The truck's sudden halt means the driver must stop to avoid a rear-end collision at the intersection."}
{"id": "train_05824", "split": "train", "clip_key": "2020-0217-110854_026290_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "026290"}, "frames": ["2020-0217-110854_026290_movie_t-3.jpg", "2020-0217-110854_026290_movie_t-2.jpg", "2020-0217-110854_026290_movie_t-1.jpg", "2020-0217-110854_026290_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene is inside a lit urban expressway tunnel with two same-direction lanes bounded by concrete walls and guardrails; the pavement is dry and smooth, and traffic is light. A red bus directly ahead in the ego lane slows with brake lights on, constraining the ego car's pace as it follows. No other nearby vehicles are visible, and the narrow tunnel walls leave little lateral space.", "hazard_reasoning": "There is a red bus slowing in the ego lane, in front of the ego car. The bus's reduced speed may require the driver to adjust speed promptly to avoid collision, so slowing down is advised."}
{"id": "train_05825", "split": "train", "clip_key": "2020-0228-150133_024053_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "024053"}, "frames": ["2020-0228-150133_024053_movie_t-3.jpg", "2020-0228-150133_024053_movie_t-2.jpg", "2020-0228-150133_024053_movie_t-1.jpg", "2020-0228-150133_024053_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of crossing pedestrian", "environment_perception": "An urban signalized intersection comes into view on a two-way road with no median; the ego vehicle approaches in the left lane on smooth pavement amid light traffic. A black minivan ahead in the same lane is stopped near the crosswalk, constraining the ego vehicle's progress. To the right, a pedestrian carrying a backpack is crossing on the marked crosswalk across the ego lane, occupying the path. A cyclist on the right rides along the side street and passes the zebra lines toward the junction, while another cyclist on the left nears the crosswalk at the corner. Traffic lights and roadside signs are visible at the junction.", "hazard_reasoning": "There is a pedestrian carrying a backpack and crossing the street, to the right side, at the pedestrian crossing. The driver should be cautious because the pedestrian is on the crosswalk ahead and may enter the vehicle's path unexpectedly."}
{"id": "train_05826", "split": "train", "clip_key": "titan_clip_547_000552_movie", "source": {"subset": "titan", "scenario": "clip_547", "frame": "000552"}, "frames": ["titan_clip_547_000552_movie_t-3.jpg", "titan_clip_547_000552_movie_t-2.jpg", "titan_clip_547_000552_movie_t-1.jpg", "titan_clip_547_000552_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single lane descends between buildings, with no median and smooth pavement; traffic is light. A white truck ahead in the ego lane is stopped, blocking the path and constraining progress. On the right very near the camera, a woman walks uphill along the roadside beside the ego lane, moving parallel to traffic and close to the carriageway. Farther ahead on the left sidewalk, another pedestrian moves near the posts without stepping into the lane. Orange cones and tape cordon off a short section along the left curb, slightly narrowing the usable space.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The stopped truck blocks your path and requires you to reduce speed to safely navigate around it."}
{"id": "train_05827", "split": "train", "clip_key": "2020-0217-110854_033886_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "033886"}, "frames": ["2020-0217-110854_033886_movie_t-3.jpg", "2020-0217-110854_033886_movie_t-2.jpg", "2020-0217-110854_033886_movie_t-1.jpg", "2020-0217-110854_033886_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement and painted lane islands carries heavy, slow-moving traffic toward a signalized intersection, with no physical median visible. A white hatchback directly ahead in the ego lane slows because of congestion and sets the pace for the ego vehicle. To the right, a large highway express coach is slightly ahead, moving slowly in the adjacent lane while remaining parallel to the ego lane. Pedestrians cluster along the left sidewalk near a crosswalk behind guardrails, waiting as the queues clear. Blue overhead direction signs for Routes 20 and 414 indicate upcoming destinations.", "hazard_reasoning": "There is a white hatchback slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The driver should slow down to maintain a safe distance and avoid a collision due to the sudden queue ahead aligned with the warning content."}
{"id": "train_05828", "split": "train", "clip_key": "titan_clip_568_000492_movie", "source": {"subset": "titan", "scenario": "clip_568", "frame": "000492"}, "frames": ["titan_clip_568_000492_movie_t-3.jpg", "titan_clip_568_000492_movie_t-2.jpg", "titan_clip_568_000492_movie_t-1.jpg", "titan_clip_568_000492_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban, very narrow brick-paved street with no center line or median is bordered by shops; the surface is good and vehicular flow is light but space is constrained. Ahead along the left edge, a black van stands with its rear hatch open and boxes visible, narrowing the lane and limiting the ego vehicle's passing room. On the right, a pedestrian wearing black pants and a brown sweater stands at the road edge because there is no sidewalk, and he could step into the ego path. A woman in a striped top walks near the right foreground along the storefront, encroaching slightly into the lane close to the ego vehicle. Bicycles line the left side.", "hazard_reasoning": "There is a pedestrian wearing black pants and a brown sweater, standing on the right side of the road, because there is no sidewalk. The driver should carefully manoeuvre around the pedestrian to avoid a potential collision."}
{"id": "train_05829", "split": "train", "clip_key": "2020-0207-101955_114948_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "114948"}, "frames": ["2020-0207-101955_114948_movie_t-3.jpg", "2020-0207-101955_114948_movie_t-2.jpg", "2020-0207-101955_114948_movie_t-1.jpg", "2020-0207-101955_114948_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway runs through a covered section with tall concrete walls, carrying two same-direction lanes divided by a solid orange line; the pavement is smooth and traffic is heavy and slow. A black sedan directly ahead in the ego lane slows because of congestion ahead, constraining the ego vehicle's pace. To the right, a silver minivan slightly ahead in the adjacent lane creeps forward in parallel, limiting opportunities to change lanes. Farther ahead, a tall box truck in the ego lane and a white flatbed truck in the right lane move slowly with the queue, keeping overall speeds low.", "hazard_reasoning": "There is a black sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The slowing sedan indicates queued traffic ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_05830", "split": "train", "clip_key": "2020-0203-154554_041929_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "041929"}, "frames": ["2020-0203-154554_041929_movie_t-3.jpg", "2020-0203-154554_041929_movie_t-2.jpg", "2020-0203-154554_041929_movie_t-1.jpg", "2020-0203-154554_041929_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene under an elevated expressway shows a single-lane ramp with a concrete wall on the left and a guardrail on the right; the pavement is smooth and traffic is light. Ahead in the ego lane, a white box truck drives away from the camera, continuing straight and modestly setting the pace. On the right, a car travels along a parallel higher roadway in the same direction behind the guardrail, remaining separate from the ego path. Farther ahead to the right, another vehicle near an intersection creeps forward without entering the ramp. Overhead structures and the walled corridor constrain sight lines, and no oncoming lane is present on this section.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05831", "split": "train", "clip_key": "2020-0204-150838_032512_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "032512"}, "frames": ["2020-0204-150838_032512_movie_t-3.jpg", "2020-0204-150838_032512_movie_t-2.jpg", "2020-0204-150838_032512_movie_t-1.jpg", "2020-0204-150838_032512_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban multi-lane arterial with smooth pavement shows heavy, stop-and-go flow as vehicles queue near an intersection. Directly ahead in the ego lane, a white van is stopped with brake lights on because congestion ahead blocks progress, and it controls the ego car's pace. To the left, a black sedan alongside in the adjacent lane is also nearly stopped, holding position beside the ego vehicle. Ahead left in the neighboring lane, a white minivan inches forward toward the intersection in the same congestion while remaining in its lane.", "hazard_reasoning": "There is a white van that is stopped in front of the ego car, in the ego car lane, because traffic is congested ahead of them. The driver should stop promptly to maintain a safe distance and avoid rear-ending the stationary vehicle."}
{"id": "train_05832", "split": "train", "clip_key": "2020-0203-154554_033911_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "033911"}, "frames": ["2020-0203-154554_033911_movie_t-3.jpg", "2020-0203-154554_033911_movie_t-2.jpg", "2020-0203-154554_033911_movie_t-1.jpg", "2020-0203-154554_033911_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban road under an elevated structure carries two same-direction lanes, bordered by a hedge-lined curb on the left and a guardrail on the right; the pavement is dry and traffic is slow. A white bus directly ahead in the ego lane slows because traffic is congested ahead, constraining the ego car's pace. In the adjacent right lane, a small flatbed truck runs slightly ahead at a similar speed, occupying the passing lane beside the bus. Other cars in that lane queue behind and alongside the truck, moving with the same slow flow.", "hazard_reasoning": "There is a white bus slowing down in front of the ego car, because of traffic congestion ahead. The bus's deceleration indicates congested traffic ahead, so you should slow down to maintain a safe following distance."}
{"id": "train_05833", "split": "train", "clip_key": "titan_clip_1370_000144_movie", "source": {"subset": "titan", "scenario": "clip_1370", "frame": "000144"}, "frames": ["titan_clip_1370_000144_movie_t-3.jpg", "titan_clip_1370_000144_movie_t-2.jpg", "titan_clip_1370_000144_movie_t-1.jpg", "titan_clip_1370_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban two-way street with a single narrow lane in each direction runs between mid-rise buildings; the pavement is dry and traffic is light. Two female pedestrians carrying handbags walk away from the camera along the left edge in the ego lane because the sidewalk is blocked by adjacent construction, so they occupy part of the driving path. A white van is stopped ahead on the left near the curb, further constricting the lane. On the right, roadwork crews and machinery sit behind cones and barriers that narrow the roadway, with temporary signs and barricades marking the work zone. No oncoming vehicles are close.", "hazard_reasoning": "There are two female pedestrians, both carrying handbags, walking together down the left side of the road, in the ego lane, away from the ego-car, because the sidewalk is blocked by construction. The driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_05834", "split": "train", "clip_key": "2020-0203-154554_054614_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "054614"}, "frames": ["2020-0203-154554_054614_movie_t-3.jpg", "2020-0203-154554_054614_movie_t-2.jpg", "2020-0203-154554_054614_movie_t-1.jpg", "2020-0203-154554_054614_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs beneath an elevated roadway, with three same-direction lanes divided from the opposite carriageway by guardrails; the pavement looks dry and traffic is light. A gray van ahead in the right lane travels steadily, staying in lane and not affecting the ego car. A white minivan farther ahead in the center lane moves at a similar speed, forming the next vehicle in the ego path. Along the left curb a small box truck is stopped, partly occupying the left lane and narrowing that side. Blue overhead directional signs give route guidance and indicate a junction in 300 m, and a pedestrian footbridge spans the road.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05835", "split": "train", "clip_key": "titan_clip_1029_000378_movie", "source": {"subset": "titan", "scenario": "clip_1029", "frame": "000378"}, "frames": ["titan_clip_1029_000378_movie_t-3.jpg", "titan_clip_1029_000378_movie_t-2.jpg", "titan_clip_1029_000378_movie_t-1.jpg", "titan_clip_1029_000378_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to approaching pedestrians on your right", "environment_perception": "An urban commercial alley with a single narrow shared lane and block-paved surface runs straight ahead, with no median and light vehicular traffic. The roadway is clear but constricted by a stopped white van and shop signboards, reducing available width. Ahead on the right, two pedestrians in white shirts and black pants walk toward the ego vehicle near the middle of the lane, potentially entering its path. Next to them on the right edge, a worker at the open rear of the white van unloads items and moves a small cart, partially protruding into the lane and limiting space to pass. Farther ahead in the center distance, another pedestrian walks away along the lane, lightly constraining the ego vehicle's pace. Parked bicycles and cones line the right side, further narrowing the corridor.", "hazard_reasoning": "There is are two pedestrians wearing white shirts and black pants, and walking on the right side of the road, towards the ego car. The two pedestrians are approaching the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_05836", "split": "train", "clip_key": "titan_clip_298_000474_movie", "source": {"subset": "titan", "scenario": "clip_298", "frame": "000474"}, "frames": ["titan_clip_298_000474_movie_t-3.jpg", "titan_clip_298_000474_movie_t-2.jpg", "titan_clip_298_000474_movie_t-1.jpg", "titan_clip_298_000474_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to cyclist crossing", "environment_perception": "An urban two-way street with one lane per direction and no median stretches ahead; the asphalt is smooth and traffic is light. A cyclist in a blue shirt is ahead in the middle of the roadway, crossing rightward across the ego lane toward the right side, briefly blocking the path and dictating a slow approach. A passenger car travels toward us in the opposite lane at a distance, continuing straight with no effect on our movement. Parked vehicles and bicycles line the curbs but remain outside the travel lanes.", "hazard_reasoning": "There is a cyclist wearing a blue shirt, in the middle of the street, crossing to the right side of the road. The cyclist may move unpredictably into your path, so you need to yield to avoid a collision."}
{"id": "train_05837", "split": "train", "clip_key": "2020-0227-104226_027195_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "027195"}, "frames": ["2020-0227-104226_027195_movie_t-3.jpg", "2020-0227-104226_027195_movie_t-2.jpg", "2020-0227-104226_027195_movie_t-1.jpg", "2020-0227-104226_027195_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban two-way road with one lane per direction and a solid yellow centerline has smooth pavement and light, steady traffic. A white box truck ahead in the ego lane drives away from the ego car and stays centered, setting the immediate pace. An oncoming silver car approaches in the opposite lane to the right and continues straight without drifting toward the centerline. A signalized intersection is visible ahead, and low white guardrails line both sides with narrow shoulders.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. Because the red traffic light ahead is illuminated, the truck may brake suddenly, so the driver should be aware of the red light ahead."}
{"id": "train_05838", "split": "train", "clip_key": "titan_clip_579_000576_movie", "source": {"subset": "titan", "scenario": "clip_579", "frame": "000576"}, "frames": ["titan_clip_579_000576_movie_t-3.jpg", "titan_clip_579_000576_movie_t-2.jpg", "titan_clip_579_000576_movie_t-1.jpg", "titan_clip_579_000576_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane in each direction and no median stretches ahead, the pavement smooth and traffic light and slow. A white minivan ahead in the ego lane proceeds at low speed behind another car, setting the ego-vehicle's pace. On the right, a pedestrian with a backpack walks along the sidewalk by a convenience store, close to the curb but staying on the footway. Far ahead an oncoming vehicle advances in its lane with ample separation. Cones and shop displays line the right curb, slightly narrowing the roadside space.", "hazard_reasoning": "No hazards detected; the road is clear and no warnings are necessary."}
{"id": "train_05839", "split": "train", "clip_key": "2020-0205-103411_077475_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "077475"}, "frames": ["2020-0205-103411_077475_movie_t-3.jpg", "2020-0205-103411_077475_movie_t-2.jpg", "2020-0205-103411_077475_movie_t-1.jpg", "2020-0205-103411_077475_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth asphalt runs between tall buildings, with three same-direction lanes and a right-side taper; traffic is moderate and bunches ahead, leading to a general slowdown. A gray box truck directly ahead in the ego lane slows because of congestion ahead, constraining the ego car's pace. Slightly ahead to the left, a white delivery truck in the adjacent lane also decelerates in the queue, limiting options to pass. On the right, a silver van alongside in the next lane proceeds straight at a similar speed, narrowing the gap for a rightward lane change. Farther ahead several vehicles queue toward an intersection, and the roadway is clear of obstacles.", "hazard_reasoning": "There is a gray truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance from the decelerating truck under congested conditions."}
{"id": "train_05840", "split": "train", "clip_key": "2020-0129-105040_094957_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "094957"}, "frames": ["2020-0129-105040_094957_movie_t-3.jpg", "2020-0129-105040_094957_movie_t-2.jpg", "2020-0129-105040_094957_movie_t-1.jpg", "2020-0129-105040_094957_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban arterial with two lanes in each direction has dry pavement and a low fenced median, and traffic is moderate with oncoming flow passing steadily to the right toward a signalized intersection. A white mini pickup directly ahead in the ego lane slows because a larger truck or bus further ahead is decelerating near the junction, so it sets the ego car's pace. In the adjacent same-direction lane to the left, a silver sedan cruises slightly ahead and continues straight without signaling, passing the slower queue.", "hazard_reasoning": "There's a white pick-up truck slowing down in front of the go car, in the ego lane, because of the truck slowing ahead. The driver should slow down to maintain a safe following distance and prevent a rear-end collision under these conditions."}
{"id": "train_05841", "split": "train", "clip_key": "2020-0131-135401_037256_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "037256"}, "frames": ["2020-0131-135401_037256_movie_t-3.jpg", "2020-0131-135401_037256_movie_t-2.jpg", "2020-0131-135401_037256_movie_t-1.jpg", "2020-0131-135401_037256_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban two-way road with a painted centerline approaches a signalized intersection; the pavement is dry and smooth and traffic is light with short queues. A white hatchback directly ahead in the ego lane is stopped at the line because the overhead traffic light is red. In the adjacent right lane a red van waits slightly ahead, also stationary for the same signal and pacing the ego vehicle. On the cross street several cars move through the intersection from right to left on their green without entering the ego lane. A school-zone pedestrian-warning sign stands on the left corner.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light. Because the vehicle ahead is halted at a red light, the driver must stop to maintain a safe following distance and comply with traffic signals."}
{"id": "train_05842", "split": "train", "clip_key": "2020-0227-153144_010166_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "010166"}, "frames": ["2020-0227-153144_010166_movie_t-3.jpg", "2020-0227-153144_010166_movie_t-2.jpg", "2020-0227-153144_010166_movie_t-1.jpg", "2020-0227-153144_010166_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane in each direction stretches ahead, the pavement dry and smooth and traffic light. A broad zebra crosswalk precedes a signalized intersection framed by railings and mid-rise buildings. A black SUV directly ahead in the ego lane moves forward and then slows toward the intersection, potentially stopping and constraining the ego vehicle's speed. No pedestrians or cross traffic are visible near the crosswalk, and the oncoming lane to the right stays clear.", "hazard_reasoning": "No hazards detected; the road ahead is clear and driving conditions are normal."}
{"id": "train_05843", "split": "train", "clip_key": "2020-0226-140503_002788_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "002788"}, "frames": ["2020-0226-140503_002788_movie_t-3.jpg", "2020-0226-140503_002788_movie_t-2.jpg", "2020-0226-140503_002788_movie_t-1.jpg", "2020-0226-140503_002788_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs between tall commercial buildings, the pavement dry and in good condition, with heavy, slow traffic. Oncoming lanes lie to the right with only painted separation. A mid-size SUV directly ahead in the ego lane is stopped because of congestion, constraining the ego car. Farther ahead, a box truck in the same direction creeps forward within the queue. To the right, several cars travel in the oncoming lanes at a steady pace and do not enter the ego lane. Pedestrians move along the left sidewalk behind a guardrail.", "hazard_reasoning": "There is a red mid-SUV stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The ego vehicle must stop to prevent a potential rear-end collision due to sudden halts in the traffic queue."}
{"id": "train_05844", "split": "train", "clip_key": "titan_clip_495_000288_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_495_000288_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_495_000288_movie_t-3_augB1.jpg", "titan_clip_495_000288_movie_t-2_augB1.jpg", "titan_clip_495_000288_movie_t-1_augB1.jpg", "titan_clip_495_000288_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian directing traffic.", "environment_perception": "An urban two-way street with one lane in each direction has no median, smooth pavement, and light traffic. Ahead near the center-right, a pedestrian wearing a yellow vest and blue pants walks in the middle of the road toward the right side while directing traffic, making their movement relevant to the ego vehicle's path. Farther ahead along the oncoming curb, a white truck is stopped and influences the flow. On the left sidewalk, pedestrians stand and walk near a bus stop but remain off the roadway. A no-parking sign is posted on the left.", "hazard_reasoning": "There is a pedestrian wearing a yellow vest and blue pants, walking in the middle of the road to the right side, because they are directing traffic. The driver should be aware of this pedestrian as they may move unpredictably into the travel lane."}
{"id": "train_05845", "split": "train", "clip_key": "2020-0214-145407_055971_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "055971"}, "frames": ["2020-0214-145407_055971_movie_t-3.jpg", "2020-0214-145407_055971_movie_t-2.jpg", "2020-0214-145407_055971_movie_t-1.jpg", "2020-0214-145407_055971_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a planted median and smooth pavement carries slow, dense traffic, and vehicles inch forward throughout the clip. The ego car is in a through lane while a white hatchback directly ahead slows because of congestion in the ego lane, constraining the pace. A blue taxi slightly ahead in the lane to the left creeps forward parallel to the ego vehicle and limits lateral space. Farther left, a silver box truck moves slowly near the curb behind other cars. Overhead lane-use signs indicate the left lane turns left, the two middle lanes go straight, and the rightmost lane continues straight or turns right.", "hazard_reasoning": "There is a white hatchback slowing down in front of the ego car because of traffic congestion ahead in the ego lane. Slow down to maintain a safe following distance and avoid collision due to the traffic jam."}
{"id": "train_05846", "split": "train", "clip_key": "2020-0204-103442_000015_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "000015"}, "frames": ["2020-0204-103442_000015_movie_t-3.jpg", "2020-0204-103442_000015_movie_t-2.jpg", "2020-0204-103442_000015_movie_t-1.jpg", "2020-0204-103442_000015_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban two-way street with one lane per direction and smooth asphalt has light flow as the ego car waits at a signalized intersection without a median. A white car directly ahead in the ego lane is stopped for the red traffic light, holding the ego vehicle. Several pedestrians stand on both sidewalks near the far crosswalk, lingering at the curb without entering the roadway. A black car is at the left curb near the ego vehicle. The oncoming lane on the right remains clear, and the signals ahead display red for the ego direction.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of a red traffic light. The driver should stop now to avoid colliding with the halted vehicle."}
{"id": "train_05847", "split": "train", "clip_key": "titan_clip_2_000132_movie", "source": {"subset": "titan", "scenario": "clip_2", "frame": "000132"}, "frames": ["titan_clip_2_000132_movie_t-3.jpg", "titan_clip_2_000132_movie_t-2.jpg", "titan_clip_2_000132_movie_t-1.jpg", "titan_clip_2_000132_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van.", "environment_perception": "An urban side street with a single narrow travel lane and brick paving runs between tall storefronts, with no median and light traffic throughout. A small black car or mini truck is ahead in the ego lane moving straight at a slow pace, setting the ego-vehicle's speed. A white van is parked on the left side of the road, narrowing the lane as the ego vehicle passes. Several pedestrians walk along the right sidewalk near shop entrances and remain off the carriageway. A blue pedestrian crossing sign stands on the right at the entry to the street.", "hazard_reasoning": "There is a white van parked on the left side of the road. The parked van could obstruct the driving path, so the driver should manoeuvre carefully around it to avoid collision."}
{"id": "train_05848", "split": "train", "clip_key": "2020-0218-103119_022405_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "022405"}, "frames": ["2020-0218-103119_022405_movie_t-3.jpg", "2020-0218-103119_022405_movie_t-2.jpg", "2020-0218-103119_022405_movie_t-1.jpg", "2020-0218-103119_022405_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the traffic cone", "environment_perception": "An urban divided arterial with two lanes in each direction runs between mid-rise buildings, the pavement is smooth and traffic is moderate. A narrow median with flexible posts separates oncoming traffic, and the number 50 is painted on the road surface. A white van ahead in the ego lane proceeds toward a pedestrian overpass, lightly constraining the ego vehicle's pace. Slightly ahead to the left, a silver sedan in the same direction cruises near the curb and remains in lane. To the right, several small trucks approach in the oncoming lanes at steady speed and remain separated by the median. An orange and white traffic cone sits on the right edge of the ego lane near the median.", "hazard_reasoning": "There is an orange and white traffic cone on the right side of the ego lane. The driver should be aware because the cone signals nearby construction and may require caution or lane adjustment."}
{"id": "train_05849", "split": "train", "clip_key": "titan_clip_1163_000144_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1163_000144_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1163_000144_movie_t-3_augB1.jpg", "titan_clip_1163_000144_movie_t-2_augB1.jpg", "titan_clip_1163_000144_movie_t-1_augB1.jpg", "titan_clip_1163_000144_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with brick paving and no median appears as a single lane with very light traffic; progress slows where a delivery truck is stopped ahead along the right curb with cones narrowing the roadway. A pedestrian in a green T-shirt walks away from the ego vehicle in the middle of the road to bypass the parked truck, occupying the ego path. Two other pedestrians near the right edge pass alongside the truck and walk ahead, close to the travel line and potentially entering the lane. A worker with a handcart waits at the left curb beside parked bicycles, remaining outside the roadway. A 30 km/h speed limit sign is posted on the left building facade.", "hazard_reasoning": "There is a pedestrian wearing a green T-shirt and walking away from the ego car, in the middle of the road, because of the parked vehicle. The driver should slow down to avoid a collision with the pedestrian walking unexpectedly in the roadway due to the parked van."}
{"id": "train_05850", "split": "train", "clip_key": "2020-0127-132751_032455_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "032455"}, "frames": ["2020-0127-132751_032455_movie_t-3.jpg", "2020-0127-132751_032455_movie_t-2.jpg", "2020-0127-132751_032455_movie_t-1.jpg", "2020-0127-132751_032455_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial runs straight between mid-rise buildings, with smooth dry pavement and a green fence separating a side lane on the right; traffic is light and steady. A white box truck ahead in the ego lane slows and the ego car follows at reduced speed. In the adjacent lane on the left, a beige sedan travels slightly ahead and continues straight without merging. A 50 speed limit sign is posted overhead.", "hazard_reasoning": "There is a white truck slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead on the road. Driver should follow the vehicle ahead to maintain a safe speed and distance in slowing traffic."}
{"id": "train_05851", "split": "train", "clip_key": "2020-0129-105040_020396_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "020396"}, "frames": ["2020-0129-105040_020396_movie_t-3.jpg", "2020-0129-105040_020396_movie_t-2.jpg", "2020-0129-105040_020396_movie_t-1.jpg", "2020-0129-105040_020396_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the merging hatchback", "environment_perception": "An urban divided arterial carries three lanes in the ego direction, with a red left bus lane; pavement is dry and smooth and traffic is moderate, while oncoming flow runs on the far side of a median to the right. A white hatchback ahead changes from the left lane into the ego lane because a vehicle is stopped in the left lane, merging directly in front of the ego car. A small white car in the left lane slows near the stopped vehicle in that lane. Farther ahead in the ego lane, a box truck travels steadily and sets the pace.", "hazard_reasoning": "There is a white hatchback changing lanes in front of the ego car, from the left lane to the ego lane, because of a vehicle stopped in the left lane. The hatchback's sudden merge could obstruct the ego-vehicle's path, so the driver should be aware to anticipate its movement and adjust speed or position."}
{"id": "train_05852", "split": "train", "clip_key": "2020-0217-110854_034806_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "034806"}, "frames": ["2020-0217-110854_034806_movie_t-3.jpg", "2020-0217-110854_034806_movie_t-2.jpg", "2020-0217-110854_034806_movie_t-1.jpg", "2020-0217-110854_034806_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial lined with tall buildings carries heavy, slow traffic on clean pavement, with a red-colored bus lane on the left. The silver hatchback directly ahead in the ego lane is stopped because the overhead traffic signals ahead show red, so the ego vehicle queues behind it. To the right, two large coach buses in the adjacent lanes remain nearly stationary, constraining space and the right-side view. In the left lanes, several passenger cars queue and creep forward toward the intersection within the congestion.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, in the ego lane, because of red traffic lights ahead. The driver must stop to avoid a collision with the stationary vehicle at the red light."}
{"id": "train_05853", "split": "train", "clip_key": "2020-0210-101957_009179_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "009179"}, "frames": ["2020-0210-101957_009179_movie_t-3.jpg", "2020-0210-101957_009179_movie_t-2.jpg", "2020-0210-101957_009179_movie_t-1.jpg", "2020-0210-101957_009179_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with double solid center lines curves slightly left between mid-rise buildings; pavement is fair and traffic appears moderate. A green sedan ahead in the ego lane slows because a bus is stopped at a bus stop just ahead, narrowing the lane. The white bus remains close to the left curb and partially blocks the ego lane, forcing following traffic to queue. An oncoming white flatbed truck approaches in its lane near the center line, constraining space and preventing the vehicles ahead from moving around the bus.", "hazard_reasoning": "There is a green sedan slowing in the ego lane, in front of the ego car, because a bus is stopped at a bus stop ahead. The green sedan's deceleration increases the risk of a rear-end collision, so the driver should slow down to maintain a safe following distance."}
{"id": "train_05854", "split": "train", "clip_key": "titan_clip_1109_000060_movie", "source": {"subset": "titan", "scenario": "clip_1109", "frame": "000060"}, "frames": ["titan_clip_1109_000060_movie_t-3.jpg", "titan_clip_1109_000060_movie_t-2.jpg", "titan_clip_1109_000060_movie_t-1.jpg", "titan_clip_1109_000060_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban side street without lane markings runs straight between mid-rise buildings, the asphalt patched, and traffic is light. Parked vehicles line both curbs and there is no divider. Far ahead in the ego direction, a small car continues away along the center of the roadway and does not constrain the pace. On the right sidewalk outside a restaurant, several pedestrians walk along the frontage and remain on the walkway. Bicycles are parked at the right curb and farther ahead. A traffic cone, planters, and the closely parked vans slightly narrow the usable lane, and no traffic signals or speed signs are visible.", "hazard_reasoning": "There are no visible hazards on the road, so the driver can continue at a steady speed without additional caution."}
{"id": "train_05855", "split": "train", "clip_key": "2020-0127-132751_063423_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "063423"}, "frames": ["2020-0127-132751_063423_movie_t-3.jpg", "2020-0127-132751_063423_movie_t-2.jpg", "2020-0127-132751_063423_movie_t-1.jpg", "2020-0127-132751_063423_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the semi truck", "environment_perception": "An urban multi-lane arterial climbs gently with smooth pavement and a painted divider on the right, and traffic is light and free-flowing. A white semi truck drives alongside the ego vehicle in the left adjacent lane, pacing the ego and occasionally edging slightly ahead, which keeps the vehicles parallel. A white sedan ahead in the ego lane continues straight at a steady speed and increases its gap. Farther up the road, another truck in the same direction proceeds uphill and may set the pace for vehicles behind it. An overhead blue sign above the left side shows a straight-ahead arrow with a truck symbol, indicating lane guidance for heavy vehicles. Sidewalks line both sides and no oncoming traffic is visible.", "hazard_reasoning": "There is a white semi truck driving alongside the ego car, in the left lane. The truck could merge into the ego's lane unexpectedly, so the driver should maintain awareness of its position."}
{"id": "train_05856", "split": "train", "clip_key": "titan_clip_193_000876_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_193_000876_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_193_000876_movie_t-3_augB1.jpg", "titan_clip_193_000876_movie_t-2_augB1.jpg", "titan_clip_193_000876_movie_t-1_augB1.jpg", "titan_clip_193_000876_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to yield to pedestrian", "environment_perception": "An urban two-way street with one lane each direction and no median runs between mid-rise buildings; the asphalt looks smooth and traffic is light. Parked vehicles line both curbs. Ahead, a pedestrian in a gray shirt and blue pants runs from the right side toward the left across the middle of the road, entering the left-hand ego lane and directly affecting its path. Farther ahead, a car approaches in the oncoming lane at a steady pace, remaining in its lane. Near the right curb, another person stands beside a parked van and waits without stepping into the roadway.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and blue pants, running in the middle of the road, from the right side to the left side. The pedestrian's unexpected crossing creates a collision risk, so the driver should slow down to yield to the pedestrian and avoid impact."}
{"id": "train_05857", "split": "train", "clip_key": "2020-0204-103442_050643_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "050643"}, "frames": ["2020-0204-103442_050643_movie_t-3.jpg", "2020-0204-103442_050643_movie_t-2.jpg", "2020-0204-103442_050643_movie_t-1.jpg", "2020-0204-103442_050643_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with a single through lane in the ego direction runs between buildings and an elevated structure; the pavement is dry with no median, and traffic moves slowly. A silver van directly ahead in the ego lane reduces speed, held up by a large truck further ahead. The large truck decelerates in the same lane, constraining the pace and forming a short queue. No opposing lane is visible, and fenced sidewalks line both sides.", "hazard_reasoning": "There is a silver van slowing down in front of the ego car, in the ego lane, because of a truck slowing ahead of the van. The chain of deceleration may require the driver to brake early to maintain a safe following distance under this situation."}
{"id": "train_05858", "split": "train", "clip_key": "titan_clip_926_000264_movie", "source": {"subset": "titan", "scenario": "clip_926", "frame": "000264"}, "frames": ["titan_clip_926_000264_movie_t-3.jpg", "titan_clip_926_000264_movie_t-2.jpg", "titan_clip_926_000264_movie_t-1.jpg", "titan_clip_926_000264_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction runs between commercial buildings; the asphalt is smooth and traffic is light and slow, with delivery trucks stopped along the left curb narrowing the ego lane. Ahead at the zebra crossing, a pedestrian carrying a handbag, wearing black pants and a blue T-shirt, crosses toward the left side across the ego lane, directly dictating the vehicle's pace. From the right sidewalk, a person walking a bicycle steps onto the crosswalk and continues left, likely to pass in front of the vehicle. In the opposing lane, a small van inches toward the crosswalk and slows, yielding to the people crossing. A white box truck is stopped just beyond the crosswalk on the left, constricting the passage and partly blocking sightlines.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing black pants and a blue t-shirt, and crossing the street at the pedestrian crossing to the left side. The pedestrian may step into the vehicle's path unexpectedly, so the driver should slow down to yield and prevent a collision."}
{"id": "train_05859", "split": "train", "clip_key": "titan_clip_171_000426_movie", "source": {"subset": "titan", "scenario": "clip_171", "frame": "000426"}, "frames": ["titan_clip_171_000426_movie_t-3.jpg", "titan_clip_171_000426_movie_t-2.jpg", "titan_clip_171_000426_movie_t-1.jpg", "titan_clip_171_000426_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian pushing cart", "environment_perception": "A dense urban commercial alley carries a narrow two-way road with no center divider and smooth asphalt, and traffic is light and slow. On the right edge near the ego vehicle's path, a pedestrian in a white shirt and white pants pushes a cart and walks toward the camera along the curb because there is no sidewalk, so the pedestrian may enter the lane. Ahead on the left, a group of pedestrians gathers outside a shop and intermittently steps into the roadway, constraining the available space. Along the left curb, a white car and a silver van are stopped and protrude slightly into the travel way, further narrowing the passage. A delivery dolly with crates rests on the right verge as a static obstacle.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and white pants, pushing a cart, and walking towards the ego car, on the right side of the road, because there is no sidewalk. The pedestrian is entering the driving lane, so you should yield to avoid a collision."}
{"id": "train_05860", "split": "train", "clip_key": "titan_clip_63_000066_movie", "source": {"subset": "titan", "scenario": "clip_63", "frame": "000066"}, "frames": ["titan_clip_63_000066_movie_t-3.jpg", "titan_clip_63_000066_movie_t-2.jpg", "titan_clip_63_000066_movie_t-1.jpg", "titan_clip_63_000066_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of cones narrowing the lane", "environment_perception": "An urban side street with two-way traffic and no center line stretches ahead as the ego vehicle proceeds along the left; the pavement is smooth and traffic is light. A large flatbed truck is stopped on the right curb a short distance ahead, partly protruding into the lane and narrowing the roadway within a work area. A cyclist rides ahead near the center of the road, continuing away from the ego and may constrain its pace through the narrow section. On the right, a line of orange traffic cones with striped bars between them and black-orange striped panels marks the roadside workspace.", "hazard_reasoning": "There are traffic cones with striped bars between them, on the right side of the road. The cones indicate a narrowed lane and potential obstacles ahead, so the driver should be cautious to avoid collision."}
{"id": "train_05861", "split": "train", "clip_key": "2020-0206-142535_008638_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "008638"}, "frames": ["2020-0206-142535_008638_movie_t-3.jpg", "2020-0206-142535_008638_movie_t-2.jpg", "2020-0206-142535_008638_movie_t-1.jpg", "2020-0206-142535_008638_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban intersection with a smooth, dry surface has a two-lane left-hand-traffic approach and no median, and traffic is light. A white truck ahead in the ego lane drives away from the camera and follows the rightward bend through the junction, slightly constraining the ego vehicle's pace. Farther ahead in the adjacent right lane, a larger white box truck proceeds in the same direction while bearing right through the intersection and remains ahead. Overhead traffic signals are present at the junction.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The driver should follow the vehicle ahead to maintain a safe following distance in case it brakes unexpectedly."}
{"id": "train_05862", "split": "train", "clip_key": "2020-0203-114632_023915_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "023915"}, "frames": ["2020-0203-114632_023915_movie_t-3.jpg", "2020-0203-114632_023915_movie_t-2.jpg", "2020-0203-114632_023915_movie_t-1.jpg", "2020-0203-114632_023915_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with two-way traffic and smooth pavement runs between midrise buildings, and vehicles move at a steady pace. A white box truck ahead in the ego lane proceeds straight through the intersection under a green signal, setting the pace for the ego car. Farther ahead in the adjacent right same-direction lane, a small white van continues straight at a similar speed. In the oncoming lanes to the right, a dark sedan approaches and passes through the junction in its lane, remaining separated from the ego path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05863", "split": "train", "clip_key": "titan_clip_1221_000396_movie", "source": {"subset": "titan", "scenario": "clip_1221", "frame": "000396"}, "frames": ["titan_clip_1221_000396_movie_t-3.jpg", "titan_clip_1221_000396_movie_t-2.jpg", "titan_clip_1221_000396_movie_t-1.jpg", "titan_clip_1221_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban back street with no centerline appears as a narrow two-way road with smooth pavement and light traffic, gently curving ahead between buildings and trees. The ego vehicle proceeds in the left-side lane while the corridor narrows due to vehicles stopped along the opposite curb. On the right side by the parked vehicles, a pedestrian in a white T-shirt walks toward the ego car while attending to one of the vehicles, staying close to the carriageway and may enter the ego lane. Two small vans are parked along the right curb in the oncoming side, creating a mild pinch point for passing. No salient traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, walking on the right side of the road, towards the ego car, because they are attending their parked vehicle. The pedestrian may step into the vehicle's path unexpectedly as they approach their parked vehicle, so the driver should be aware of their movements."}
{"id": "train_05864", "split": "train", "clip_key": "titan_clip_980_000174_movie", "source": {"subset": "titan", "scenario": "clip_980", "frame": "000174"}, "frames": ["titan_clip_980_000174_movie_t-3.jpg", "titan_clip_980_000174_movie_t-2.jpg", "titan_clip_980_000174_movie_t-1.jpg", "titan_clip_980_000174_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way shopping street with one narrow lane per direction, no median, and an even stone-paved surface shows light traffic as the ego vehicle proceeds slowly along the left side. Ahead on the left, a pedestrian in a blue shirt and black pants carrying a handbag walks away along the lane edge because parked bicycles line the curb, keeping close to the ego path. Farther ahead near the centerline, an oncoming cyclist rides toward the camera in the right-side lane, narrowing available space. Several other pedestrians are visible farther ahead along the shopfronts on both sides, walking slowly at the edges. Rows of parked bicycles and tight storefronts border the roadway, reducing lateral clearance.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt and black pants, carrying a handbag, and walking on the left side of the road, away from the ego car, because of the parked bicycles. The pedestrian may step into the lane suddenly due to constrained sidewalk space, so the driver should slow down to maintain control and avoid a potential collision."}
{"id": "train_05865", "split": "train", "clip_key": "titan_clip_816_000120_movie", "source": {"subset": "titan", "scenario": "clip_816", "frame": "000120"}, "frames": ["titan_clip_816_000120_movie_t-3.jpg", "titan_clip_816_000120_movie_t-2.jpg", "titan_clip_816_000120_movie_t-1.jpg", "titan_clip_816_000120_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of the pedestrian ahead", "environment_perception": "An urban backstreet with a single narrow lane in the travel direction, no median, and smooth pavement shows light traffic throughout. A small box truck ahead in the same lane moves slowly near the left edge, constraining the pace and partly blocking the view forward. On the left side, a pedestrian wearing black pants and carrying a black shoulder bag walks away from the camera within the marked pedestrian/bicycle lane, staying close to the curb. Another pedestrian farther ahead on the left also walks away without affecting the lane. A scooter is parked at the right curb beside storefronts, slightly narrowing the edge. No oncoming vehicles or prominent traffic signals are visible.", "hazard_reasoning": "there are a pedestrian wearing black pants, and carrying a black shoulder bag, walking on the left side of the road, away from the ego car, because there's a pedestrian lane. The pedestrian may step into the roadway unexpectedly, so the driver should be cautious."}
{"id": "train_05866", "split": "train", "clip_key": "2020-0129-105040_048666_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "048666"}, "frames": ["2020-0129-105040_048666_movie_t-3.jpg", "2020-0129-105040_048666_movie_t-2.jpg", "2020-0129-105040_048666_movie_t-1.jpg", "2020-0129-105040_048666_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs straight beneath an elevated expressway, with three lanes in the ego direction and a right-side guardrail; the pavement is dry and smooth and traffic is light. A small car ahead in the center lane cruises steadily, setting the pace at a comfortable distance. Farther ahead, another car continues in the left lane in the same direction and stays well ahead. On the right edge, a white van stands on the shoulder near the guardrail, close to but outside the travel lane. Overhead blue direction signs span the road, and no signals or unusual hazards are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05867", "split": "train", "clip_key": "titan_clip_1324_000318_movie", "source": {"subset": "titan", "scenario": "clip_1324", "frame": "000318"}, "frames": ["titan_clip_1324_000318_movie_t-3.jpg", "titan_clip_1324_000318_movie_t-2.jpg", "titan_clip_1324_000318_movie_t-1.jpg", "titan_clip_1324_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "The scene is a narrow residential two-way road in Japan with no centerline, bordered by hedges and building walls; the asphalt is smooth with a darker patch, and traffic is light. The lane curves gently right ahead with a utility pole and close walls tightening visibility. Two pedestrians are on the left shoulder talking beside the hedge, standing still at the edge of the roadway. Ahead on the right side, a person with a bicycle is near the curb and slow or stopped, partially occupying the travel space. No traffic signals or speed signs are visible, and a couple of cones sit by an entrance on the right.", "hazard_reasoning": "There are two pedestrians talking and standing on the left side of the road. These pedestrians are close to the roadway, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_05868", "split": "train", "clip_key": "2020-0129-105040_069516_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "069516"}, "frames": ["2020-0129-105040_069516_movie_t-3.jpg", "2020-0129-105040_069516_movie_t-2.jpg", "2020-0129-105040_069516_movie_t-1.jpg", "2020-0129-105040_069516_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist", "environment_perception": "A narrow urban residential two-way street with one lane each direction, no median, and smooth pavement extends ahead, flanked by curbside railings; traffic is light. A white van approaches in the oncoming lane at low speed, keeping to its side of the center line without affecting the ego lane. A cyclist wearing a brown outfit rides away from the ego car along the left edge of the roadway, staying near the curb. On the left sidewalk by the fence, a pedestrian waits near the crosswalk and does not step into the road.", "hazard_reasoning": "There is a cyclist wearing a brown dress and cycling on the left side of the road, away from the ego car. The cyclist may veer into the travel lane unexpectedly, so the driver should be aware of their presence."}
{"id": "train_05869", "split": "train", "clip_key": "2020-0206-101736_085908_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "085908"}, "frames": ["2020-0206-101736_085908_movie_t-3.jpg", "2020-0206-101736_085908_movie_t-2.jpg", "2020-0206-101736_085908_movie_t-1.jpg", "2020-0206-101736_085908_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to traffic ahead", "environment_perception": "An urban two-way road with one lane each direction runs beside buildings, divided by a low hedge median; the pavement is in good condition and traffic in the ego's direction is slow and queuing near an intersection. A white flatbed truck directly ahead in the ego lane is stopped due to congestion at the intersection, holding the ego car. Slightly ahead to the left, a white passenger car in the same direction waits near the curb and inches forward with the queue, reducing space to pass. The opposing lanes lie beyond the median and do not affect the scene.", "hazard_reasoning": "There is a white truck stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead at the intersection. The driver should yield to the stopped traffic to maintain safe distance and avoid rear-end collisions."}
{"id": "train_05870", "split": "train", "clip_key": "titan_clip_1210_000594_movie", "source": {"subset": "titan", "scenario": "clip_1210", "frame": "000594"}, "frames": ["titan_clip_1210_000594_movie_t-3.jpg", "titan_clip_1210_000594_movie_t-2.jpg", "titan_clip_1210_000594_movie_t-1.jpg", "titan_clip_1210_000594_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A busy urban shopping street with a narrow single-lane carriageway paved with interlocking tiles runs between storefronts, with cones lining both sides; traffic is very light. Ahead in the center of the lane, two pedestrians, one in a yellow shirt and one in a black dress, walk away from the ego vehicle, keeping to the middle because construction work and cones occupy the left side, so they constrain the vehicle's pace. On the right edge, a small white truck stands facing the ego vehicle, stopped partly in the roadway and narrowing the available space. Farther ahead near the junction, a few other pedestrians cross the street across the ego path but remain distant.", "hazard_reasoning": "There are two pedestrians wearing a yellow shirt and a black dress, walking in the middle of the road, away from the ego car, because of construction work on the left. The driver should slow down because these pedestrians are walking in the middle of the road, creating a collision risk."}
{"id": "train_05871", "split": "train", "clip_key": "titan_clip_1127_000204_movie", "source": {"subset": "titan", "scenario": "clip_1127", "frame": "000204"}, "frames": ["titan_clip_1127_000204_movie_t-3.jpg", "titan_clip_1127_000204_movie_t-2.jpg", "titan_clip_1127_000204_movie_t-1.jpg", "titan_clip_1127_000204_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban residential street with a single shared lane and red-painted shoulders runs between apartments on the left and trees with a riverside railing on the right; the pavement is smooth and traffic is light with no vehicles present. Ahead of the ego car, a pedestrian in a red dress crosses from the right side toward the left, directly in front of the lane and likely to enter the ego path. On the near right edge, a man walks along the shoulder in the same direction, close to the travel lane and constraining the ego vehicle's pace. Farther ahead on the left edge, a couple of pedestrians continue along the shoulder with minimal interaction. The road curves gently, and overhanging vegetation narrows sight lines.", "hazard_reasoning": "There is a pedestrian in front of the ego car wearing a red dress, crossing to the left side of the road. The driver should slow down to allow the pedestrian to cross safely and prevent a collision."}
{"id": "train_05872", "split": "train", "clip_key": "titan_clip_518_000588_movie", "source": {"subset": "titan", "scenario": "clip_518", "frame": "000588"}, "frames": ["titan_clip_518_000588_movie_t-3.jpg", "titan_clip_518_000588_movie_t-2.jpg", "titan_clip_518_000588_movie_t-1.jpg", "titan_clip_518_000588_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging scooter", "environment_perception": "A narrow urban two-way street with one lane each direction runs between low-rise buildings, the asphalt is patched and slightly uneven, and traffic is light. Ahead in the ego lane, a white scooter that has just turned right from a side street merges and shifts into the ego lane, moving away and likely to set the pace briefly. From the right curb near the intersection, a cyclist approaches oncoming and tracks diagonally toward the center of the roadway, momentarily encroaching on the ego lane. Pedestrians walk along the left sidewalk under umbrellas, staying off the roadway but close to the curb. A blue left-pointing arrow sign on the left indicates a side street direction at the corner.", "hazard_reasoning": "There is a white scooter lane changing in front of the ego car, into the ego lane, because it made a right hand turn from a side street, into the ego lane. The driver should be aware because the scooter's lane change places it in the vehicle's path, requiring timely evasive action to avoid a collision."}
{"id": "train_05873", "split": "train", "clip_key": "titan_clip_1067_000246_movie", "source": {"subset": "titan", "scenario": "clip_1067", "frame": "000246"}, "frames": ["titan_clip_1067_000246_movie_t-3.jpg", "titan_clip_1067_000246_movie_t-2.jpg", "titan_clip_1067_000246_movie_t-1.jpg", "titan_clip_1067_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban alley with a single undivided lane has smooth pavement and very light traffic; a white railing and raised verge run along the right while shopfronts line the left. On the left edge close ahead, a pedestrian in a gray shirt and black pants talks on the phone while walking toward the ego vehicle along the roadway, occupying part of the lane. Farther ahead on the right, a small truck stands stopped beside the railing, narrowing the usable width. Parked bicycles and shop displays protrude from the left, reducing clearance.", "hazard_reasoning": "There is a pedestrian taking on the phone, wearing a gray shirt and black pants, walking on the left side of the road, towards the ego car. The pedestrian may not notice the vehicle and could step into the lane unexpectedly, so the driver should carefully manoeuvre around them."}
{"id": "train_05874", "split": "train", "clip_key": "titan_clip_1319_000066_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1319_000066_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1319_000066_movie_t-3_augB1.jpg", "titan_clip_1319_000066_movie_t-2_augB1.jpg", "titan_clip_1319_000066_movie_t-1_augB1.jpg", "titan_clip_1319_000066_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be cautious of crossing pedestrian", "environment_perception": "An urban commercial street with a single lane in each direction, no median, and smooth pavement curves slightly right; vehicle traffic is light with no cars immediately ahead or oncoming. A pedestrian wearing a gray shirt ahead near midblock crosses from left to right in front of the ego car, moving through the ego lane and constraining the vehicle's pace. Two cyclists farther ahead travel in the same direction along the left red shoulder, keeping near the curb as they continue straight and reducing available passing space. A pedestrian on the right sidewalk close to the camera walks along the curb in the same direction, staying near the roadway edge and narrowing lateral clearance. No salient signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, crossing to the right side of the street in front of the ego car. This pedestrian may continue into the vehicle's path, so the driver should be cautious to avoid a collision."}
{"id": "train_05875", "split": "train", "clip_key": "2020-0225-102455_071679_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "071679"}, "frames": ["2020-0225-102455_071679_movie_t-3.jpg", "2020-0225-102455_071679_movie_t-2.jpg", "2020-0225-102455_071679_movie_t-1.jpg", "2020-0225-102455_071679_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes runs between tall buildings, the pavement is dry and intact, and traffic is heavy and slow. A white minivan a short distance ahead in the ego lane slows and opens a gap as congestion forms ahead. To the right, a gray wagon slightly ahead in the adjacent lane creeps forward at a similar pace, staying alongside the ego path. Farther ahead in that right lane, a black sedan queues behind trucks and brakes, reinforcing the slowdown. Along the left curb, several service vans are stopped with doors open and equipment on the sidewalk, partially occupying the left lane and narrowing usable space. An overhead blue sign shows three through lanes.", "hazard_reasoning": "A white minivan is slowing down in the ego lane, away from the ego car because there is traffic congestion ahead. Stop to maintain a safe distance as the vehicle slows due to congestion ahead."}
{"id": "train_05876", "split": "train", "clip_key": "2020-0225-145150_000157_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "000157"}, "frames": ["2020-0225-145150_000157_movie_t-3.jpg", "2020-0225-145150_000157_movie_t-2.jpg", "2020-0225-145150_000157_movie_t-1.jpg", "2020-0225-145150_000157_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane each direction, no median, and worn patched asphalt carries light traffic. The camera car follows a white van ahead in the left-hand ego lane as it pulls away and continues straight through the next intersection on a green light, setting the pace. Several pedestrians are on the right sidewalk near shop entrances and railings, walking along and lingering near the crosswalk but remaining off the roadway. A few pedestrians on the left sidewalk stand by a fence and walk parallel to traffic without approaching the lane. Overhead traffic signals show green for the ego direction, and bicycles line the right curb behind a barrier.", "hazard_reasoning": "There's a white van, driving away from the ego car, in the ego lane, because of green traffic lights. The driver should maintain a safe following distance and mirror the van's movements to adapt to any sudden stops or signal changes."}
{"id": "train_05877", "split": "train", "clip_key": "2020-0131-103016_008146_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "008146"}, "frames": ["2020-0131-103016_008146_movie_t-3.jpg", "2020-0131-103016_008146_movie_t-2.jpg", "2020-0131-103016_008146_movie_t-1.jpg", "2020-0131-103016_008146_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban arterial with three same-direction lanes and smooth pavement runs beneath an elevated roadway, with a guardrail on the right and heavy, stop-and-go traffic. A white motorbike directly ahead in the ego lane is stationary at the red light, holding the ego vehicle. Farther ahead in the same lane, a small hatchback is also stopped in the queue, continuing to block the path. In the adjacent left lane, a white sedan sits slightly ahead and slows with the jam, constraining any potential merge.", "hazard_reasoning": "There is a white motorbike stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid colliding with the halted motorcycle at the intersection."}
{"id": "train_05878", "split": "train", "clip_key": "titan_clip_1347_000300_movie", "source": {"subset": "titan", "scenario": "clip_1347", "frame": "000300"}, "frames": ["titan_clip_1347_000300_movie_t-3.jpg", "titan_clip_1347_000300_movie_t-2.jpg", "titan_clip_1347_000300_movie_t-1.jpg", "titan_clip_1347_000300_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban, tree-lined cobblestone street with no lane markings forms a narrow carriageway between midrise buildings; there is no divider and traffic is extremely light with no moving vehicles. The view continues toward a cross street where the roadway opens into a wider plaza-like space. A small group of pedestrians stands and walks on the left sidewalk near the upcoming intersection, moving parallel to the road and posing no immediate conflict. Another pedestrian is on the right sidewalk outside a caf, walking away from the camera. A round roadside prohibition sign is mounted on a pole to the left. Planter boxes and poles line both sides, and bicycles and cars are parked off to the sides near the junction.", "hazard_reasoning": "No hazards detected; the roadway is clear of vehicles, obstacles, and traffic controls, so no specific warning is required."}
{"id": "train_05879", "split": "train", "clip_key": "2020-0227-153144_036624_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "036624"}, "frames": ["2020-0227-153144_036624_movie_t-3.jpg", "2020-0227-153144_036624_movie_t-2.jpg", "2020-0227-153144_036624_movie_t-1.jpg", "2020-0227-153144_036624_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with multiple lanes in each direction and a painted median stretches ahead; the dry pavement is in good condition and traffic is moderate, bunching into a slow queue. A white minivan directly ahead in the ego lane slows, constrained by congestion further ahead and setting the ego vehicle's pace. To the right, oncoming traffic including a white sedan proceeds straight in its lane, remaining separated by the median and not conflicting. A van stands near the right curb beside shops, outside the travel lanes. An overhead sign for Route 4 indicates Koenji 3 km.", "hazard_reasoning": "There is a white minivan slowing in the ego lane, because of traffic congestion ahead. The driver should slow down to match the minivan's reduced speed and maintain a safe following distance under these conditions."}
{"id": "train_05880", "split": "train", "clip_key": "2020-0221-115122_026997_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "026997"}, "frames": ["2020-0221-115122_026997_movie_t-3.jpg", "2020-0221-115122_026997_movie_t-2.jpg", "2020-0221-115122_026997_movie_t-1.jpg", "2020-0221-115122_026997_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial runs under an elevated expressway, with a chevron-divided section and dry, smooth pavement; traffic is moderate and compresses ahead. A white van directly ahead in the ego lane slows because of traffic congestion further up the road, setting the ego car's pace. In the adjacent right lane, a black minivan continues straight at a steadier speed and gradually overtakes the slowing vehicle. Farther ahead under the viaduct, several same-direction cars queue, reinforcing the slowdown. No salient signals or unusual hazards are visible.", "hazard_reasoning": "There is a white van slowing down in front of the ego-car, because of traffic congestion ahead. The driver should slow down to avoid colliding with the decelerating vehicle due to the congestion."}
{"id": "train_05881", "split": "train", "clip_key": "2020-0227-153144_016441_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "016441"}, "frames": ["2020-0227-153144_016441_movie_t-3.jpg", "2020-0227-153144_016441_movie_t-2.jpg", "2020-0227-153144_016441_movie_t-1.jpg", "2020-0227-153144_016441_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with three lanes in the ego direction runs between tall buildings, separated from oncoming lanes by a low hedge median; the asphalt is dry and smooth, and traffic is moderate and steady. Directly ahead, a black sedan in the ego lane moves left into the curbside lane, briefly occupying the space in front of the ego car. In the right lane ahead, a dark van continues straight at a similar pace without encroaching on the ego path. A white minivan proceeds in the left lane slightly ahead after the sedan's lane change, helping set the general flow. Beyond the hedge, opposing traffic of cars and trucks moves continuously.", "hazard_reasoning": "There is a black sedan lane changing in front of the ego car, from the ego lane to the left lane. The black sedan is merging into the ego vehicle's path unpredictably, so the driver should slow down to maintain a safe following distance."}
{"id": "train_05882", "split": "train", "clip_key": "2020-0218-103119_042498_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "042498"}, "frames": ["2020-0218-103119_042498_movie_t-3.jpg", "2020-0218-103119_042498_movie_t-2.jpg", "2020-0218-103119_042498_movie_t-1.jpg", "2020-0218-103119_042498_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with two narrow lanes and a double centerline has smooth pavement and light traffic. A white box truck is stopped directly ahead in the ego lane, blocking the path and keeping the ego car queued. In the oncoming lane to the right, a white van travels past beside the truck in the opposite direction, occupying that lane and constraining any potential pass. No traffic signals are visible, and buildings line the street.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The driver should stop to avoid colliding with the halted truck and ensure safety before proceeding."}
{"id": "train_05883", "split": "train", "clip_key": "titan_clip_410_000540_movie", "source": {"subset": "titan", "scenario": "clip_410", "frame": "000540"}, "frames": ["titan_clip_410_000540_movie_t-3.jpg", "titan_clip_410_000540_movie_t-2.jpg", "titan_clip_410_000540_movie_t-1.jpg", "titan_clip_410_000540_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the stopped van carefully.", "environment_perception": "A narrow urban shopping street with a single unmarked lane is paved with interlocking bricks and lined by bollards, and traffic is light. Ahead in the ego lane, a white van is stopped in front of the ego car, occupying the middle of the path and constraining progress. Pedestrians on both sides walk or stand close to the curb by the bollards and storefront displays, potentially stepping into the lane to pass around the obstruction. Farther ahead in the same corridor, an orange mini-truck travels away from the camera, leaving space that remains unusable because the stopped van blocks the ego vehicle's route.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car. The stopped van blocks the path ahead and increases collision risk, so the driver should carefully manoeuvre around it."}
{"id": "train_05884", "split": "train", "clip_key": "titan_clip_1378_000276_movie", "source": {"subset": "titan", "scenario": "clip_1378", "frame": "000276"}, "frames": ["titan_clip_1378_000276_movie_t-3.jpg", "titan_clip_1378_000276_movie_t-2.jpg", "titan_clip_1378_000276_movie_t-1.jpg", "titan_clip_1378_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction runs between low-rise buildings and trees; the asphalt is mostly smooth with some patched sections, and traffic is light. Ahead in the right half of the roadway, a pedestrian in a black T-shirt and brown pants carrying a handbag walks in the middle of the road away from the ego car, edging toward the right side and potentially entering the ego path. Far ahead in the oncoming lane, a car approaches steadily while keeping to its side. Several other pedestrians proceed along the sidewalks on both sides without stepping into the road.", "hazard_reasoning": "The pedestrian in a black t-shirt and brown pants, with a handbag, is walking in the middle of the road to the right side away from the ego car. The driver should slow down because a pedestrian walking on the roadway poses a collision risk and requires speed reduction for safety."}
{"id": "train_05885", "split": "train", "clip_key": "2020-0214-145407_008474_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "008474"}, "frames": ["2020-0214-145407_008474_movie_t-3.jpg", "2020-0214-145407_008474_movie_t-2.jpg", "2020-0214-145407_008474_movie_t-1.jpg", "2020-0214-145407_008474_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under elevated expressways, with three same-direction lanes and no oncoming traffic visible; the pavement is dry and smooth and flow is moderate, picking up speed. A white van directly ahead in the ego lane accelerates through the intersection on the green light, serving as the lead vehicle the ego follows. In the right adjacent lane, a silver microvan travels slightly ahead at a steady pace, keeping its lane and not entering the ego path. On the far right, a white station wagon comes up from behind and overtakes alongside in the fast lane without merging. A green traffic signal is visible above the roadway.", "hazard_reasoning": "There is a white van accelerating in the ego lane, because of the green traffic light, in front of the ego car. The light has turned green and the lead van is pulling away, so you should accelerate to maintain a safe following distance and clear the intersection promptly."}
{"id": "train_05886", "split": "train", "clip_key": "2020-0131-135401_037555_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "037555"}, "frames": ["2020-0131-135401_037555_movie_t-3.jpg", "2020-0131-135401_037555_movie_t-2.jpg", "2020-0131-135401_037555_movie_t-1.jpg", "2020-0131-135401_037555_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with two lanes in the ego direction and a painted centerline has dry, well-kept pavement and moderate flow as the scene pauses at a signalized intersection. A white hatchback directly ahead in the ego lane is stopped because the light is red and therefore holds the ego vehicle. To the right beyond the centerline, oncoming traffic including a white van proceeds straight through the junction without interacting with the ego path. The overhead signal shows red, and a school-zone warning sign stands on the left sidewalk.", "hazard_reasoning": "A white hatchback is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to avoid a rear-end collision and obey the traffic signal."}
{"id": "train_05887", "split": "train", "clip_key": "2020-0206-101736_055406_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "055406"}, "frames": ["2020-0206-101736_055406_movie_t-3.jpg", "2020-0206-101736_055406_movie_t-2.jpg", "2020-0206-101736_055406_movie_t-1.jpg", "2020-0206-101736_055406_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs beside an elevated structure, with a concrete-and-guardrail median separating oncoming lanes; the dry pavement and clear weather contrast with heavy, stop-and-go traffic. A small white van directly ahead in the ego lane is stopped because congestion blocks the way, holding the ego car. In the adjacent left lane slightly ahead, a silver van inches forward and then brakes in the queue, limiting any merge opportunity. Farther ahead in that left lane, a truck crawls with the line of vehicles and sets a slow pace. Oncoming traffic beyond the median moves steadily to the right, remaining separated.", "hazard_reasoning": "There is a white van which has stopped in front of the ego car because of traffic congestion ahead. The stopped vehicle signals congested traffic conditions and may require the driver to stop to avoid a collision."}
{"id": "train_05888", "split": "train", "clip_key": "titan_clip_962_000426_movie", "source": {"subset": "titan", "scenario": "clip_962", "frame": "000426"}, "frames": ["titan_clip_962_000426_movie_t-3.jpg", "titan_clip_962_000426_movie_t-2.jpg", "titan_clip_962_000426_movie_t-1.jpg", "titan_clip_962_000426_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around him", "environment_perception": "A narrow urban side street with cobblestone paving runs between tall buildings, functioning as a single lane with no centerline; vehicular traffic is light while pedestrian activity is steady. A woman ahead on the right walks away along the lane edge, constraining the ego-car's pace. On the left in front of the ego-car, a man in a black shirt stands by the curb talking on a phone and could step into the lane. Farther ahead near the center, another pedestrian crosses from left to right, briefly occupying the path. A large white service truck is parked on the left with its side panel open and orange cones, narrowing the roadway.", "hazard_reasoning": "There is a man wearing a black shirt, talking on the phone, and standing, on the left side of the road, in front of the ego-car. The driver should manoeuvre carefully around him to avoid collision."}
{"id": "train_05889", "split": "train", "clip_key": "2020-0131-135401_076291_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "076291"}, "frames": ["2020-0131-135401_076291_movie_t-3.jpg", "2020-0131-135401_076291_movie_t-2.jpg", "2020-0131-135401_076291_movie_t-1.jpg", "2020-0131-135401_076291_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection with smooth pavement and moderate traffic flow. A white van ahead in the ego lane drives away through the junction, increasing its gap from the camera car. Just ahead to the left, a dark van in the adjacent same-direction lane continues straight at a similar pace without encroaching on the ego lane. On the right side, several oncoming cars move through their lanes across the intersection without turning toward the ego path. Overhead traffic lights span the intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05890", "split": "train", "clip_key": "2020-0218-103119_052497_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "052497"}, "frames": ["2020-0218-103119_052497_movie_t-3.jpg", "2020-0218-103119_052497_movie_t-2.jpg", "2020-0218-103119_052497_movie_t-1.jpg", "2020-0218-103119_052497_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction runs alongside a steel guardrail that separates oncoming traffic; the pavement is dry and smooth, and overall flow is moderate and slow-moving. A white box truck directly ahead in the ego lane slows, and the ego vehicle follows its pace. To the left, a red SUV slightly ahead in the adjacent lane continues forward at a similar speed, briefly limiting space for a lane change. Farther ahead in that left lane, a red car proceeds with the same slow flow. Beyond the guardrail to the right, several vehicles including white vans travel in the oncoming lanes without interacting with the ego's path.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The driver ahead is reducing speed, so you should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_05891", "split": "train", "clip_key": "2020-0225-102455_008999_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_008999_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_008999_movie_t-3_augB1.jpg", "2020-0225-102455_008999_movie_t-2_augB1.jpg", "2020-0225-102455_008999_movie_t-1_augB1.jpg", "2020-0225-102455_008999_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with no median and smooth pavement shows moderate, slow-moving traffic. The ego vehicle proceeds in the left-hand lane with oncoming traffic to the right. Directly ahead, a gray dump truck in the ego lane slows to a crawl because of congestion ahead, constraining the ego vehicle's pace. To the left of the truck, a dark sedan slightly behind travels parallel in the adjacent same-direction lane at similar speed, limiting an immediate merge left. In the oncoming lane to the right, a silver sedan approaches steadily, remaining separated and not interacting with the ego lane.", "hazard_reasoning": "There is a gray truck slowing down in the ego lane because of traffic congestion ahead. The driver should reduce speed to maintain a safe following distance and avoid a rear-end collision with the slowing vehicle."}
{"id": "train_05892", "split": "train", "clip_key": "2020-0205-103411_076714_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "076714"}, "frames": ["2020-0205-103411_076714_movie_t-3.jpg", "2020-0205-103411_076714_movie_t-2.jpg", "2020-0205-103411_076714_movie_t-1.jpg", "2020-0205-103411_076714_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a painted median separates oncoming traffic to the right; the pavement looks clean and dry and traffic is moderate. A black truck ahead in the ego lane slows, constraining the ego vehicle's pace. To the left, a white sedan follows a tall box truck slightly ahead in the adjacent lane and continues straight, limiting space to merge left. Oncoming cars and a small van travel in the opposite lanes to the right beyond the median and pass without conflict. An overhead gantry is present and a dedicated right-turn lane runs along the median, with no active signals visible.", "hazard_reasoning": "A black truck is slowing in front of the ego car in the ego lane. Driver should slow down to maintain a safe distance behind the decelerating truck."}
{"id": "train_05893", "split": "train", "clip_key": "2020-0204-103442_092552_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "092552"}, "frames": ["2020-0204-103442_092552_movie_t-3.jpg", "2020-0204-103442_092552_movie_t-2.jpg", "2020-0204-103442_092552_movie_t-1.jpg", "2020-0204-103442_092552_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane two-way road crosses a narrow bridge with guardrails, the pavement looks worn, and traffic is moderate and slow. A black sedan ahead in the left ego lane is slowing, constraining the ego car's pace. An oncoming white car approaches in the right lane and continues straight past without deviating. Farther ahead, a short line of same-direction vehicles is visible. A straight-ahead regulatory sign stands on the left, and roadworks with an excavator sit on the right behind fencing but do not obstruct the lane.", "hazard_reasoning": "The black sedan is slowing in front of the ego car in the ego lane. You should slow down because the vehicle ahead is reducing speed and you must maintain a safe distance to avoid a rear-end collision."}
{"id": "train_05894", "split": "train", "clip_key": "2020-0129-105040_102060_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "102060"}, "frames": ["2020-0129-105040_102060_movie_t-3.jpg", "2020-0129-105040_102060_movie_t-2.jpg", "2020-0129-105040_102060_movie_t-1.jpg", "2020-0129-105040_102060_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial features same-direction lanes divided by solid orange lines, no physical median visible, and dry pavement; traffic flows steadily toward a signalized intersection showing green. A small white truck ahead in the ego lane moves away through the green light, increasing the gap. Slightly farther ahead to the left, a larger box truck proceeds straight in the adjacent lane and partly blocks the view ahead. To the right, a dark compact car travels alongside at a similar pace while staying in its lane. Other cars ahead in the right lane continue straight with the flow.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05895", "split": "train", "clip_key": "titan_clip_772_000072_movie", "source": {"subset": "titan", "scenario": "clip_772", "frame": "000072"}, "frames": ["titan_clip_772_000072_movie_t-3.jpg", "titan_clip_772_000072_movie_t-2.jpg", "titan_clip_772_000072_movie_t-1.jpg", "titan_clip_772_000072_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial side street with unmarked narrow lanes and smooth pavement appears calm with no moving vehicles and light pedestrian traffic. On the left, a pedestrian wearing a white shirt, black pants, gray running shoes, and a backpack crosses rightward in front of the ego-vehicle near the left edge of the lane. Ahead, several other pedestrians cross the roadway from left to right at walking pace, occupying the path and determining the ego car's pause. On the right sidewalk, a person stands near the curb facing the street without stepping off. A parked bicycle and shopfronts line the right side, but no traffic signals or signs are prominent.", "hazard_reasoning": "There is a male pedestrian wearing a white shirt, black pants, gray running shoes and carrying a backpack, who is crossing the street on the left side of the ego-car. The driver should slow down to allow the pedestrian to cross safely and prevent a potential collision."}
{"id": "train_05896", "split": "train", "clip_key": "2020-0220-151845_000796_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "000796"}, "frames": ["2020-0220-151845_000796_movie_t-3.jpg", "2020-0220-151845_000796_movie_t-2.jpg", "2020-0220-151845_000796_movie_t-1.jpg", "2020-0220-151845_000796_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs between tall buildings with a painted centerline and smooth asphalt; traffic is moderate, with the curbside lane slowed while the adjacent lane keeps moving. A green bus directly ahead in the ego lane is stopped because of traffic congestion ahead, holding the ego vehicle in place. To the right, a black taxi in the next lane creeps forward and passes the bus, reducing opportunities for the ego vehicle to merge. Farther ahead in that lane, another car follows slowly in the queue. A bus stop shelter and railing line the left edge, narrowing the shoulder.", "hazard_reasoning": "There is a green bus stopped in front of the ego car in the ego lane, because of traffic congestion ahead. You should stop to maintain a safe distance behind the stationary bus ahead."}
{"id": "train_05897", "split": "train", "clip_key": "2020-0220-102630_030082_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "030082"}, "frames": ["2020-0220-102630_030082_movie_t-3.jpg", "2020-0220-102630_030082_movie_t-2.jpg", "2020-0220-102630_030082_movie_t-1.jpg", "2020-0220-102630_030082_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes and no median is shown, the pavement dry and smooth, and traffic is heavy with a slow or stopped queue. A black minivan is stopped just ahead and to the right of the ego car because of traffic congestion ahead. In the ego lane, a white sedan waits a short distance ahead, constraining the ego vehicle's pace. Farther ahead, a large white box truck stands still near the left curb beside orange cones, with vehicles stacked behind it. Two motor scooters in front move slowly up the left edge, filtering past the queue to continue ahead.", "hazard_reasoning": "There is a black minivan stopped in front of and to the right side of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary vehicle."}
{"id": "train_05898", "split": "train", "clip_key": "2020-0203-114632_003320_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "003320"}, "frames": ["2020-0203-114632_003320_movie_t-3.jpg", "2020-0203-114632_003320_movie_t-2.jpg", "2020-0203-114632_003320_movie_t-1.jpg", "2020-0203-114632_003320_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be cautious of the white truck ahead", "environment_perception": "An urban two-way street with one lane each way and no median stretches ahead, the asphalt smooth as the ego vehicle approaches a zebra crossing; traffic is light. An oncoming gray van in the right lane advances straight across the crossing toward the ego vehicle while staying in its lane. Farther ahead in the same oncoming lane, there is a white truck moving toward the ego car, continuing straight ahead of the van. A pedestrian walks along the right sidewalk near the crossing without stepping into the roadway.", "hazard_reasoning": "There is a white truck moving in the right lane toward the ego car. The truck's movement suggests it may merge into the ego lane, reducing lateral clearance; the driver should monitor its position and anticipate any cut-in maneuvers."}
{"id": "train_05899", "split": "train", "clip_key": "2020-0207-101955_005438_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "005438"}, "frames": ["2020-0207-101955_005438_movie_t-3.jpg", "2020-0207-101955_005438_movie_t-2.jpg", "2020-0207-101955_005438_movie_t-1.jpg", "2020-0207-101955_005438_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multi-lane street approaches a signalized intersection with smooth pavement and moderate traffic. A green canvas-covered truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. To the right, a larger white box truck runs alongside in the adjacent lane and continues ahead through the intersection, limiting lateral space. On the left sidewalk, several pedestrians wait at the crosswalk near the corner without entering the roadway. Farther ahead, a dark van in the next lane proceeds straight with steady speed, keeping distance from the ego lane.", "hazard_reasoning": "There is a green truck slowing down in the ego lane. The truck's deceleration requires the driver to reduce speed to maintain a safe following distance."}
{"id": "train_05900", "split": "train", "clip_key": "titan_clip_895_000066_movie", "source": {"subset": "titan", "scenario": "clip_895", "frame": "000066"}, "frames": ["titan_clip_895_000066_movie_t-3.jpg", "titan_clip_895_000066_movie_t-2.jpg", "titan_clip_895_000066_movie_t-1.jpg", "titan_clip_895_000066_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban shopping street with a single narrow lane and no visible center line has dry, smooth pavement and light traffic, but the lane is partially obstructed near the left curb. On the left close ahead, a silver box truck is parked with its rear door open for unloading, its liftgate protruding and constraining the ego vehicle's path. Ahead in the lane, a pedestrian crosses right to left in front of the truck and continues across the road, occupying the ego path. Farther ahead on the right, pedestrians walk along the roadway edge and drift toward the lane while staying near the curb. A portable signboard and roadside bollards line the left curb beside the truck.", "hazard_reasoning": "There is a silver truck parked on the left side of the road, because it is being unloaded. The driver should carefully manoeuvre around this obstacle to avoid collision and maintain safe passage."}
{"id": "train_05901", "split": "train", "clip_key": "2020-0131-103016_011556_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-103016_011556_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-103016_011556_movie_t-3_augB1.jpg", "2020-0131-103016_011556_movie_t-2_augB1.jpg", "2020-0131-103016_011556_movie_t-1_augB1.jpg", "2020-0131-103016_011556_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the lane-changing motorcycle", "environment_perception": "An urban arterial with three same-direction lanes runs between tall buildings, the dry pavement marked by a double white line separating the two right lanes, and traffic flows at a moderate, steady pace. A white hatchback ahead in the ego lane proceeds with the stream, limited by a small van and a box truck farther up. From the right lane, a white motorcycle moves left into the ego lane, merging ahead and briefly narrowing the gap. Another motorcycle travels along the left lane near the curb, continuing forward without entering the ego path. Several cars and a light truck cruise in the adjacent right lanes.", "hazard_reasoning": "There is a white motorcycle changing lanes from the right lane to the ego lane. This unexpected lane change could result in a side-impact collision if not anticipated, so the driver should be aware of the motorcycle merging into the lane."}
{"id": "train_05902", "split": "train", "clip_key": "2020-0226-140503_007999_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "007999"}, "frames": ["2020-0226-140503_007999_movie_t-3.jpg", "2020-0226-140503_007999_movie_t-2.jpg", "2020-0226-140503_007999_movie_t-1.jpg", "2020-0226-140503_007999_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a central median and smooth wet pavement approaches a signalized intersection; traffic is light to moderate, initially queued and then begins to move on green. Ahead in the ego lane, a gray hatchback accelerates away from a stop as the signal turns green, opening space for the ego vehicle. To the right, a white sedan in the adjacent lane starts forward in parallel through the junction, briefly pacing the ego car. On the far left near the curb, a small three-wheeled scooter waits at the stop line and stays clear of the ego path. A roadside sign bans U-turns.", "hazard_reasoning": "There is a gray hatchback accelerating from a stop away from the ego car, in the ego lane, because of the green traffic light. The light has turned green and surrounding vehicles are moving forward; you should start moving promptly to maintain safe flow and avoid unnecessary delay."}
{"id": "train_05903", "split": "train", "clip_key": "titan_clip_1293_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1293_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1293_000198_movie_t-3_augB1.jpg", "titan_clip_1293_000198_movie_t-2_augB1.jpg", "titan_clip_1293_000198_movie_t-1_augB1.jpg", "titan_clip_1293_000198_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian.", "environment_perception": "An urban two-way street with shops and trees appears, the ego-vehicle proceeding in the left lane on smooth, narrow pavement and overall light traffic. A pedestrian in white pants carrying a handbag and an umbrella walks from the left sidewalk across the ego lane toward the right, passing ahead and directly intersecting the vehicle's path. A white van stands stationary at the right curb in the oncoming lane a short distance ahead, narrowing the roadway near the crossing. Farther ahead in the same direction, another small white van moves slowly up the street, modestly setting the pace. No traffic signals or posted speeds are clearly visible.", "hazard_reasoning": "There is a pedestrian wearing white pants, carrying a handbag and an umbrella, and crossing the street from the left side to the right side of the road. The pedestrian may enter the vehicle's path unexpectedly, so the driver should yield to avoid collision."}
{"id": "train_05904", "split": "train", "clip_key": "2020-0228-150133_061704_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "061704"}, "frames": ["2020-0228-150133_061704_movie_t-3.jpg", "2020-0228-150133_061704_movie_t-2.jpg", "2020-0228-150133_061704_movie_t-1.jpg", "2020-0228-150133_061704_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop for traffic congestion ahead", "environment_perception": "An urban arterial with two same-direction lanes and a painted center line has dry, smooth pavement, and traffic flows heavily with a standing queue ahead. Directly ahead, a gray sedan is stopped in the ego lane because of traffic congestion and blocks the ego vehicle's path. To the left, a white box truck in the adjacent same-direction lane inches forward beside us, limiting a lane change. Farther ahead, several vans and cars queue in both same-direction lanes and sustain the slowdown. In the oncoming lanes to the right, a truck and other vehicles move past, separated by the center line and not interacting with our path. A pedestrian overpass spans the road, and a distant signalized junction is visible.", "hazard_reasoning": "There is a gray sedan stopped in the ego lane because of traffic congestion ahead. The gray sedan is halted due to the queue, so the driver should stop to maintain safe spacing and avoid a collision."}
{"id": "train_05905", "split": "train", "clip_key": "titan_clip_1230_000114_movie", "source": {"subset": "titan", "scenario": "clip_1230", "frame": "000114"}, "frames": ["titan_clip_1230_000114_movie_t-3.jpg", "titan_clip_1230_000114_movie_t-2.jpg", "titan_clip_1230_000114_movie_t-1.jpg", "titan_clip_1230_000114_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban commercial two-way street with one lane in each direction, no median, and smooth pavement; traffic is light and steady. Ahead in the ego lane on the left, a white van is parked at the curb, narrowing the lane and limiting the ego vehicle's path. In the oncoming lane to the right, a silver van approaches and passes by at close range, continuing straight and constraining any immediate maneuver around the parked vehicle. On the left sidewalk near the shops, several pedestrians stand and walk close to the curb next to the van but remain on the sidewalk.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane. The van obstructs the travel lane, requiring drivers to manoeuvre around it to avoid collisions."}
{"id": "train_05906", "split": "train", "clip_key": "2020-0204-150838_074971_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "074971"}, "frames": ["2020-0204-150838_074971_movie_t-3.jpg", "2020-0204-150838_074971_movie_t-2.jpg", "2020-0204-150838_074971_movie_t-1.jpg", "2020-0204-150838_074971_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with two lanes in the same direction runs under cloudy skies, bounded by a high sound wall on the right and a guardrail on the left. The pavement is smooth and slightly damp, and traffic is light as the road curves gently left. A black truck covered with a tarp is directly ahead in the ego lane and continues straight at a steady speed, gradually moving away and setting the pace for the ego car. A small box truck travels in the lane to the left ahead, maintaining speed and pulling away without entering the ego lane. Farther ahead in the left lane, a few cars cruise straight and remain well separated, posing no immediate interaction.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05907", "split": "train", "clip_key": "2020-0207-151349_038185_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "038185"}, "frames": ["2020-0207-151349_038185_movie_t-3.jpg", "2020-0207-151349_038185_movie_t-2.jpg", "2020-0207-151349_038185_movie_t-1.jpg", "2020-0207-151349_038185_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated structure with multiple same-direction lanes, dry smooth pavement, and light to moderate, steady traffic. A white sedan ahead in the ego lane proceeds straight at a constant speed, setting the ego vehicle's pace. Slightly farther ahead in the adjacent right lane, a black minivan continues parallel without changing lanes. In the distance, a boxy truck in the right lanes moves more slowly, influencing flow there. Overhead lane signs show straight-ahead arrows. Guardrails and dense hedges line the right side, and no obstacles or oncoming traffic appear within view.", "hazard_reasoning": "No immediate hazards are detected; the road is clear and visibility is good. Continue at a moderate speed while staying vigilant for any changes in the environment."}
{"id": "train_05908", "split": "train", "clip_key": "titan_clip_910_000234_movie", "source": {"subset": "titan", "scenario": "clip_910", "frame": "000234"}, "frames": ["titan_clip_910_000234_movie_t-3.jpg", "titan_clip_910_000234_movie_t-2.jpg", "titan_clip_910_000234_movie_t-1.jpg", "titan_clip_910_000234_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street has a single narrow shared lane with no divider and block paving in good condition; motor traffic is absent while pedestrian flow is heavy. Slightly ahead to the right, a pedestrian wearing a red shirt and black pants crosses leftward in front of the ego vehicle, entering the lane. Near the left edge, another pedestrian walks diagonally into the roadway toward the center and may enter the path. Farther ahead, several pedestrians move along the lane away from the camera, constraining the ego vehicle's pace. A blue right-arrow one-way sign and a no-parking sign are posted on a pole at the left.", "hazard_reasoning": "There's a pedestrian wearing a red shirt, wearing black pants, crossing the street, in front of the ego car, to the right side. The driver should slow down to avoid colliding with the pedestrian in the vehicle's path."}
{"id": "train_05909", "split": "train", "clip_key": "2020-0228-150133_057366_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "057366"}, "frames": ["2020-0228-150133_057366_movie_t-3.jpg", "2020-0228-150133_057366_movie_t-2.jpg", "2020-0228-150133_057366_movie_t-1.jpg", "2020-0228-150133_057366_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth pavement runs between low-rise buildings, and same-direction traffic is heavy, forming a stopped queue. The ego travels in the left-side lane, where a black sedan directly ahead is stopped because congestion blocks the way and it controls the ego car's pace. In the adjacent lane to the left, a white minivan waits slightly ahead beside the ego vehicle, limiting chances to merge. Farther ahead near the junction, a bus also waits within the queue. A signalized intersection is visible ahead, and a right-side guardrail lines the roadway.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to prevent a collision with the stationary vehicle ahead."}
{"id": "train_05910", "split": "train", "clip_key": "2020-0228-102841_034946_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "034946"}, "frames": ["2020-0228-102841_034946_movie_t-3.jpg", "2020-0228-102841_034946_movie_t-2.jpg", "2020-0228-102841_034946_movie_t-1.jpg", "2020-0228-102841_034946_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban divided arterial with smooth pavement stretches ahead, with the ego vehicle in the left lane; traffic is moderate but bunches into a queue ahead. A low median separates opposing lanes, and flow appears steadier on the far side. A black hatchback is stopped directly ahead in the ego lane because of traffic congestion, holding the ego car at a standstill. Farther ahead in the same direction, multiple vehicles line up and creep forward, continuing the queue into the distance. In the opposing lanes to the right, a small white truck and several cars approach at normal speed, separated by the median and not entering the ego path. A no U-turn sign stands on the right shoulder.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, because of traffic congestion ahead. The driver should stop immediately to avoid a rear-end collision with the halted vehicle."}
{"id": "train_05911", "split": "train", "clip_key": "titan_clip_671_000594_movie", "source": {"subset": "titan", "scenario": "clip_671", "frame": "000594"}, "frames": ["titan_clip_671_000594_movie_t-3.jpg", "titan_clip_671_000594_movie_t-2.jpg", "titan_clip_671_000594_movie_t-1.jpg", "titan_clip_671_000594_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow undivided urban street runs ahead with no median and generally smooth pavement, and traffic is light with no oncoming vehicles visible. A pedestrian on the left shoulder ahead walks away from the camera along the curb, close to the travel lane and parallel to the ego vehicle's path. A white van is stopped ahead on the right at the curb near a side street, aligned in the same direction and stationary, leaving the ego lane clear. A convex mirror and roadside signs stand on the right corner, while bollards and fences line both sides, creating a tight corridor.", "hazard_reasoning": "No hazards are present. The road ahead is clear and unobstructed, so the driver can proceed safely."}
{"id": "train_05912", "split": "train", "clip_key": "2020-0129-105040_043172_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "043172"}, "frames": ["2020-0129-105040_043172_movie_t-3.jpg", "2020-0129-105040_043172_movie_t-2.jpg", "2020-0129-105040_043172_movie_t-1.jpg", "2020-0129-105040_043172_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the minivan.", "environment_perception": "An urban multi-lane arterial runs beneath an elevated structure with smooth pavement and a right-side guardrail; traffic is heavy and queued at a signal. A silver minivan directly ahead in the ego lane is stopped for a red light and holds the ego car at a standstill. In the adjacent middle lane, a white van slightly ahead remains stopped in the queue, limiting a lane change. On the far left lane, a large truck is stopped alongside the ego vehicle as the line waits. Overhead traffic signals show red, and the queue remains stationary.", "hazard_reasoning": "There is a silver minivan stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver must stop to avoid a rear-end collision with the halted minivan."}
{"id": "train_05913", "split": "train", "clip_key": "2020-0217-110854_024746_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "024746"}, "frames": ["2020-0217-110854_024746_movie_t-3.jpg", "2020-0217-110854_024746_movie_t-2.jpg", "2020-0217-110854_024746_movie_t-1.jpg", "2020-0217-110854_024746_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial approaches a signalized intersection with two same-direction lanes, a painted median and turn lanes; the pavement is dry and traffic is moderate, queuing at the light. Directly ahead in the ego lane, an orange and white bus remains stopped because the signal ahead is red, holding the ego vehicle in place. In the adjacent lane to the left, a silver van waits slightly ahead at the same light, parallel to the ego path. Overhead traffic lights and directional arrows mark the junction, with a right-turn lane branching on the right.", "hazard_reasoning": "There is an orange and white bus stopped in front of the ego car in the ego lane, because the traffic light is red. The driver needs to stop to avoid colliding with this stationary bus and comply with the red light."}
{"id": "train_05914", "split": "train", "clip_key": "titan_clip_439_000048_movie", "source": {"subset": "titan", "scenario": "clip_439", "frame": "000048"}, "frames": ["titan_clip_439_000048_movie_t-3.jpg", "titan_clip_439_000048_movie_t-2.jpg", "titan_clip_439_000048_movie_t-1.jpg", "titan_clip_439_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow shared lane and block-paved surface runs between storefronts, with no divider and light vehicle flow; space is constrained by a parked silver car along the left edge. Ahead in the center of the roadway, a pedestrian in a gray shirt and black pants walks away from the ego vehicle and angles toward the right side, briefly occupying the ego path. At the right edge near a restaurant entrance, another pedestrian waits by the sidewalk and may step into the lane as the car approaches. Far ahead, an oncoming white van advances toward the camera along the opposing direction on the same narrow lane, limiting room for passing.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black pants, walking in the middle of the road toward the right side, away from the ego car. The driver should slow down to allow the pedestrian to clear the roadway safely."}
{"id": "train_05915", "split": "train", "clip_key": "2020-0127-132751_053526_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "053526"}, "frames": ["2020-0127-132751_053526_movie_t-3.jpg", "2020-0127-132751_053526_movie_t-2.jpg", "2020-0127-132751_053526_movie_t-1.jpg", "2020-0127-132751_053526_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the silver hatchback ahead", "environment_perception": "An urban arterial with two lanes in the ego direction runs between mid-rise buildings, with a guardrail along the right edge; the asphalt is smooth and traffic is moderate and steady. A dark sedan directly ahead in the ego lane holds a constant speed and sets the pace. A silver hatchback drives ahead in the left lane at a similar speed, approaching a red light. Farther ahead in the left lane, a black kei van travels slightly slower than the flow, reducing space for a left-lane change.", "hazard_reasoning": "There is a silver hatchback driving in the left lane. The silver hatchback may slow or change lanes approaching the red light, so the driver should remain attentive to its position and behavior."}
{"id": "train_05916", "split": "train", "clip_key": "2020-0217-110854_033886_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-110854_033886_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-110854_033886_movie_t-3_augB1.jpg", "2020-0217-110854_033886_movie_t-2_augB1.jpg", "2020-0217-110854_033886_movie_t-1_augB1.jpg", "2020-0217-110854_033886_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement and painted lane islands carries heavy, slow-moving traffic toward a signalized intersection, with no physical median visible. A white hatchback directly ahead in the ego lane slows because of congestion and sets the pace for the ego vehicle. To the right, a large highway express coach is slightly ahead, moving slowly in the adjacent lane while remaining parallel to the ego lane. Pedestrians cluster along the left sidewalk near a crosswalk behind guardrails, waiting as the queues clear. Blue overhead direction signs for Routes 20 and 414 indicate upcoming destinations.", "hazard_reasoning": "There is a white hatchback slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The driver should slow down to maintain a safe distance and avoid a collision due to the sudden queue ahead aligned with the warning content."}
{"id": "train_05917", "split": "train", "clip_key": "2020-0129-105040_060768_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-105040_060768_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-105040_060768_movie_t-3_augB1.jpg", "2020-0129-105040_060768_movie_t-2_augB1.jpg", "2020-0129-105040_060768_movie_t-1_augB1.jpg", "2020-0129-105040_060768_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre around the cyclist", "environment_perception": "An urban two-way shopping street with a single narrow lane each way and red edge strips runs straight on smooth pavement, with light traffic and a zebra crossing ahead. Ahead on the right, a cyclist travels toward the ego vehicle, swinging toward the center to bypass a parked van, so the rider may momentarily encroach into the ego lane. Just beyond, a silver van stands at the right curb with workers on ladders beside the storefront, narrowing the carriageway and creating a local obstruction. On the left side, several pedestrians walk along the red shoulder near the crosswalk, close to the roadway but staying to the side.", "hazard_reasoning": "There's a cyclist cycling toward the ego-car on the right side of the road because of the parked vehicle. The cyclist may swerve into the lane unexpectedly due to the parked van, so the driver should manoeuvre around them."}
{"id": "train_05918", "split": "train", "clip_key": "2020-0210-101957_020772_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "020772"}, "frames": ["2020-0210-101957_020772_movie_t-3.jpg", "2020-0210-101957_020772_movie_t-2.jpg", "2020-0210-101957_020772_movie_t-1.jpg", "2020-0210-101957_020772_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban street with two same-direction lanes runs between mid-rise buildings, edged by railings and a clear shoulder; the pavement is smooth and traffic is light. A black motorcycle ahead in the ego lane rides away from the camera, steadily pulling ahead because the road in front of it is clear. A white SUV slightly ahead in the adjacent right lane continues forward and gradually overtakes, occupying the space beside the ego vehicle and constraining an immediate lane change. Farther ahead in the right lane, a white box truck proceeds along the block, influencing the pace of that lane. Pedestrians remain on the left sidewalk behind the railing, and no oncoming traffic is visible.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane, away from the ego car, because the road ahead is clear. To maintain safety, the driver should follow the vehicle ahead at a safe distance."}
{"id": "train_05919", "split": "train", "clip_key": "2020-0129-144857_051103_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "051103"}, "frames": ["2020-0129-144857_051103_movie_t-3.jpg", "2020-0129-144857_051103_movie_t-2.jpg", "2020-0129-144857_051103_movie_t-1.jpg", "2020-0129-144857_051103_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for traffic congestion ahead", "environment_perception": "An urban multi-lane arterial has smooth pavement and a metal guardrail median on the right separating oncoming traffic, and traffic is heavy and mostly stopped in a queue toward a signal ahead. A white sedan directly in front of the ego vehicle in the right lane is stopped because of congestion and blocks the path. In the adjacent left lane, another white sedan slightly ahead creeps forward beside the ego vehicle, limiting a lane change. Farther ahead in the left lane, a small box truck followed by a taller freight truck moves slowly with the queue.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle in the congestion."}
{"id": "train_05920", "split": "train", "clip_key": "2020-0220-102630_023593_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "023593"}, "frames": ["2020-0220-102630_023593_movie_t-3.jpg", "2020-0220-102630_023593_movie_t-2.jpg", "2020-0220-102630_023593_movie_t-1.jpg", "2020-0220-102630_023593_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multi-lane road with a curbside sidewalk and guardrail appears, the pavement is clean, and traffic flow is heavy and slow. Directly ahead in the ego lane, a large white box truck is stopped because of congestion ahead, holding the ego-vehicle in place. In the adjacent same-direction lane to the right, another box truck inches forward alongside, continuing past the ego vehicle. Farther ahead in that right lane, a small van also creeps forward in the queue. Bicycles are parked along the left sidewalk behind the railing, and no oncoming traffic is visible.", "hazard_reasoning": "a white truck has stopped in the ego lane because of the traffic congestion ahead. You should stop immediately to maintain a safe following distance and avoid a collision."}
{"id": "train_05921", "split": "train", "clip_key": "titan_clip_321_000900_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_321_000900_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_321_000900_movie_t-3_augB1.jpg", "titan_clip_321_000900_movie_t-2_augB1.jpg", "titan_clip_321_000900_movie_t-1_augB1.jpg", "titan_clip_321_000900_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban commercial backstreet features brick-pattern paving, no lane markings, and a single very narrow shared lane without a median; the surface is dry and traffic is light with no motor vehicles visible. Ahead in the center of the lane, a woman wearing black pants and a green-and-black shirt carries a handbag and walks away from the ego vehicle in the middle of the road, directly occupying the ego path. Farther ahead, a pedestrian stands at the right edge by a shopfront near the roadway. Additional pedestrians are visible in the distance near storefronts. Freestanding signboards and a large blue bin along both sides protrude into the carriageway, further narrowing the passage.", "hazard_reasoning": "There is a woman wearing black pants and a green-and-black shirt, carrying a handbag, and walking away from the ego car, in the middle of the road. The driver should yield because the pedestrian is occupying the travel path and needs right of way."}
{"id": "train_05922", "split": "train", "clip_key": "2020-0204-150838_002210_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "002210"}, "frames": ["2020-0204-150838_002210_movie_t-3.jpg", "2020-0204-150838_002210_movie_t-2.jpg", "2020-0204-150838_002210_movie_t-1.jpg", "2020-0204-150838_002210_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement has no physical median, and traffic is moderate, queuing at an intersection. The overhead and right-side traffic signals show red. A black sedan directly ahead in the ego lane is stopped at the light, setting the pace for the ego vehicle. To the right, a black van sits stationary in the adjacent lane alongside, remaining in its lane. Ahead-left, a silver van in the left lane edges forward and comes to a stop near the crosswalk, queuing beside the ego car. A pedestrian stands on the left sidewalk by the crosswalk, waiting.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The black sedan's stoppage at the red signal requires the driver to stop to maintain safe distance and comply with traffic control."}
{"id": "train_05923", "split": "train", "clip_key": "titan_clip_1040_000108_movie", "source": {"subset": "titan", "scenario": "clip_1040", "frame": "000108"}, "frames": ["titan_clip_1040_000108_movie_t-3.jpg", "titan_clip_1040_000108_movie_t-2.jpg", "titan_clip_1040_000108_movie_t-1.jpg", "titan_clip_1040_000108_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow unmarked carriageway curves slightly right; the pavement is dry and smooth and traffic flow is slow with mixed pedestrians and bicycles. There is no center divider, and storefronts and parked bicycles narrow the usable width. A cyclist in a white shirt rides ahead in the middle of the road, moving away from the ego car, as the sidewalk space is obstructed by parked bicycles. Several pedestrians ahead near the shops on both sides walk and cross casually across the path, potentially entering the ego vehicle's line. On the right, another cyclist at the curb begins to merge into the street, potentially affecting the ego car's pace.", "hazard_reasoning": "There is a cyclist wearing a white shirt, cycling in the middle of the road, away from the ego car, because the sidewalk is blocked. The driver should slow down to avoid a collision with the cyclist riding in the travel lane due to the blocked sidewalk."}
{"id": "train_05924", "split": "train", "clip_key": "2020-0228-150133_077941_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "077941"}, "frames": ["2020-0228-150133_077941_movie_t-3.jpg", "2020-0228-150133_077941_movie_t-2.jpg", "2020-0228-150133_077941_movie_t-1.jpg", "2020-0228-150133_077941_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows a smooth two-lane road carrying traffic in the same direction beside a tall noise barrier on the right and sidewalks and apartments on the left; flow is light and steady. A small black car travels ahead in the left lane in the ego vehicle's path, moving at a constant speed and effectively setting the pace. Farther ahead, another car continues in the right lane, maintaining its lane without interacting with the ego vehicle. Large 50 speed limit markings are painted on both lanes, and a hatched shoulder lines the right edge. No pedestrians or cyclists appear.", "hazard_reasoning": "No hazards are detected in this scenario, the road is clear and conditions are safe for normal driving."}
{"id": "train_05925", "split": "train", "clip_key": "2020-0129-105040_050016_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "050016"}, "frames": ["2020-0129-105040_050016_movie_t-3.jpg", "2020-0129-105040_050016_movie_t-2.jpg", "2020-0129-105040_050016_movie_t-1.jpg", "2020-0129-105040_050016_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road runs beneath an elevated expressway, with a single yellow centerline, guardrails on both sides, and slightly damp but smooth pavement; traffic is light with no oncoming vehicles visible. A small work truck is stopped ahead on the left shoulder near the pedestrian overpass, encroaching slightly into the ego lane and potentially constraining the ego vehicle's path. A speed-limit sign on the left shows 50. Concrete columns of the elevated structure and perimeter fencing line the right edge while leaving the oncoming lane clear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05926", "split": "train", "clip_key": "titan_clip_1012_000186_movie", "source": {"subset": "titan", "scenario": "clip_1012", "frame": "000186"}, "frames": ["titan_clip_1012_000186_movie_t-3.jpg", "titan_clip_1012_000186_movie_t-2.jpg", "titan_clip_1012_000186_movie_t-1.jpg", "titan_clip_1012_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban one-lane street lined with shops and metal railings stretches ahead on smooth pavement; vehicle traffic is light while pedestrian activity is heavy. On the left side ahead, a pedestrian wearing a black shirt and black pants walks away within the lane near the rail, moving along the ego path and requiring space. On the right edge close to the camera, a small group of pedestrians walks toward the ego vehicle along the curb and drifts slightly into the lane, reducing the usable width. Farther ahead in the middle of the roadway, several pedestrians progress in both directions and intermittently cross between sides, setting a slow pace. Construction barriers on the right encroach into the lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants walking on the left side of the lane, away from the ego car. The pedestrian's proximity to the lane could lead to unexpected crossing maneuvers, so the driver should carefully manoeuvre to avoid collision."}
{"id": "train_05927", "split": "train", "clip_key": "2020-0206-101736_041494_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "041494"}, "frames": ["2020-0206-101736_041494_movie_t-3.jpg", "2020-0206-101736_041494_movie_t-2.jpg", "2020-0206-101736_041494_movie_t-1.jpg", "2020-0206-101736_041494_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way arterial with smooth pavement approaches a signalized intersection, with moderate to heavy flow and a gradual slow-down; oncoming traffic in the right-side lanes is steady. A white van directly ahead in the ego lane slows because congestion builds beyond the junction, constraining our speed. A similar white van slightly ahead in the left adjacent lane continues straight at low speed parallel to us. A motorcycle ahead-right in the neighboring lane creeps forward between cars and may edge into the ego lane after the intersection.", "hazard_reasoning": "There is a white van slowing down in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the slowed vehicle and maintain safe spacing."}
{"id": "train_05928", "split": "train", "clip_key": "2020-0214-145407_017579_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "017579"}, "frames": ["2020-0214-145407_017579_movie_t-3.jpg", "2020-0214-145407_017579_movie_t-2.jpg", "2020-0214-145407_017579_movie_t-1.jpg", "2020-0214-145407_017579_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial with smooth pavement descends toward a signalized intersection, with a fenced sidewalk on the right and a right-turn-only lane on the far right; traffic appears light and flowing. A white box truck travels ahead in the ego lane and pulls away from the camera as the light ahead is green, allowing it to proceed straight. A black sedan in the adjacent left lane runs slightly behind and parallel to the ego vehicle, continuing straight without merging. Several pedestrians move along the sidewalks, well clear of the roadway. The traffic signals over the junction display green for the ego direction.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because of a green traffic light. The truck's speed may change in response to the signal, so following it helps maintain a safe distance at the intersection."}
{"id": "train_05929", "split": "train", "clip_key": "2020-0227-104226_053122_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "053122"}, "frames": ["2020-0227-104226_053122_movie_t-3.jpg", "2020-0227-104226_053122_movie_t-2.jpg", "2020-0227-104226_053122_movie_t-1.jpg", "2020-0227-104226_053122_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane two-way street with a solid yellow centerline runs between mid-rise buildings; the pavement looks smooth and traffic appears light with no visible congestion. Ahead in the oncoming lane, a silver minivan approaches at a modest speed near the centerline, relevant as it passes opposite the ego vehicle. Farther ahead in the opposite lane, a white car continues away from the camera. On the right sidewalk, a pedestrian stands next to a parked bicycle and stays clear of the roadway.", "hazard_reasoning": "There is a silver slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid collision as traffic is congested ahead."}
{"id": "train_05930", "split": "train", "clip_key": "2020-0217-110854_003326_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "003326"}, "frames": ["2020-0217-110854_003326_movie_t-3.jpg", "2020-0217-110854_003326_movie_t-2.jpg", "2020-0217-110854_003326_movie_t-1.jpg", "2020-0217-110854_003326_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban commercial street with a narrow single lane in the ego direction, no median, and wet pavement shows heavy stop-and-go flow. A red delivery motorcycle is stopped immediately ahead in the ego lane because of congestion and blocks the ego car's path. Just beyond it, a white sedan in the same lane waits and inches forward, constraining the ego vehicle's pace. Farther ahead, a large white truck is queued near a pedestrian crossing, with traffic stacked behind it. An overhead pedestrian-crossing sign is visible, and several vans are parked along the left curb, narrowing the roadway beside close storefronts.", "hazard_reasoning": "There is a red motorcycle stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The unexpected stop of the motorcycle directly ahead requires the driver to stop promptly to avoid a collision under this congested situation."}
{"id": "train_05931", "split": "train", "clip_key": "2020-0228-102841_070695_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "070695"}, "frames": ["2020-0228-102841_070695_movie_t-3.jpg", "2020-0228-102841_070695_movie_t-2.jpg", "2020-0228-102841_070695_movie_t-1.jpg", "2020-0228-102841_070695_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban side street beside a building construction site curves gently right, forming a single narrow lane with no median and sound pavement; vehicular traffic is light with no moving cars visible. Ahead in the ego lane, a pedestrian in a light puffer jacket walks away from the camera toward the site entrance, occupying the lane. On the right side of the road, a pedestrian wearing a brown coat and carrying a handbag walks toward the ego car along the edge and may step into the lane as the road bends. On the left by the construction gate, a worker in a yellow safety vest stands beside cones and fencing, narrowing the usable roadway. Orange cones and barriers from the work zone constrict space near the front.", "hazard_reasoning": "There is a pedestrian wearing a brown coat, carrying a handbag, walking on the right side of the road, towards the ego car. The driver should slow down to yield to the pedestrian and prevent a possible collision."}
{"id": "train_05932", "split": "train", "clip_key": "titan_clip_666_000306_movie", "source": {"subset": "titan", "scenario": "clip_666", "frame": "000306"}, "frames": ["titan_clip_666_000306_movie_t-3.jpg", "titan_clip_666_000306_movie_t-2.jpg", "titan_clip_666_000306_movie_t-1.jpg", "titan_clip_666_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban two-way street with one narrow lane each direction and no median appears well paved, and traffic is light with no moving vehicles ahead or oncoming. On the right edge near the camera, a pedestrian wearing a black shirt and black shorts walks toward the ego car in the roadway because there is no sidewalk, approaching the ego lane. Farther ahead on the right, another pedestrian stands near the curb and slows, which may bring them into the lane as the car passes. A large black van is parked along the right edge partly intruding into the roadway, and temporary barriers with blue sheeting line a small work area on the left, narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black shorts, walking on the right side of the road towards the ego car, because there is no sidewalk. The driver should carefully manoeuvre around the pedestrian to avoid collision."}
{"id": "train_05933", "split": "train", "clip_key": "2020-0227-104226_003803_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "003803"}, "frames": ["2020-0227-104226_003803_movie_t-3.jpg", "2020-0227-104226_003803_movie_t-2.jpg", "2020-0227-104226_003803_movie_t-1.jpg", "2020-0227-104226_003803_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under a pedestrian overpass, with a raised concrete median on the right separating oncoming traffic; pavement is smooth and the overall flow is slow with heavy congestion. A white minivan directly ahead in the ego lane slows because of traffic congestion ahead, constraining the ego vehicle's pace. A black compact car in the left adjacent lane proceeds straight at a similar speed alongside, briefly edging forward. On the far right beyond the median, an orange and white bus travels in the opposite direction without interacting. Blue overhead direction signs are visible farther ahead.", "hazard_reasoning": "There is a white van slowing down in front of the ego-car, because of traffic congestion ahead. Drivers should slow down to maintain a safe following distance and avoid a rear-end collision due to the van's reduced speed."}
{"id": "train_05934", "split": "train", "clip_key": "titan_clip_1200_000192_movie", "source": {"subset": "titan", "scenario": "clip_1200", "frame": "000192"}, "frames": ["titan_clip_1200_000192_movie_t-3.jpg", "titan_clip_1200_000192_movie_t-2.jpg", "titan_clip_1200_000192_movie_t-1.jpg", "titan_clip_1200_000192_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban side street with a single marked lane and no median shows smooth pavement and very light traffic with no moving vehicles. A pedestrian in a black shirt carrying a backpack walks along the right edge toward the ego-vehicle, and may step into the lane. Another person is crouched at the left curb near a doorway, remaining stationary and close to the roadway. A blue van is parked along the left side, slightly narrowing the passage ahead.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a backpack, and walking, on the right side of the road, towards the ego-car. The pedestrian's approach towards the vehicle could lead to an unexpected crossing, so the driver should manoeuvre around the pedestrian."}
{"id": "train_05935", "split": "train", "clip_key": "2020-0207-101955_113139_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "113139"}, "frames": ["2020-0207-101955_113139_movie_t-3.jpg", "2020-0207-101955_113139_movie_t-2.jpg", "2020-0207-101955_113139_movie_t-1.jpg", "2020-0207-101955_113139_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban tunnel scene on a two-lane same-direction road shows dry, smooth pavement and heavy stop-and-go flow with red brake-light glare on the walls. The ego vehicle travels in the left lane. A black sedan directly ahead in the ego lane slows with its brake lights because of congestion, constraining the ego vehicle's pace. To the right, a queue of cars including a white passenger van runs parallel at very low speed, keeping the adjacent lane occupied and limiting lane-change options. Far ahead near the tunnel exit, a tall box truck creeps forward, setting the tempo of the line. A narrow shoulder lines the left wall and no salient signs or signals are visible.", "hazard_reasoning": "There is a black sedan slowing in front of the ego car in the ego lane, because of traffic congestion. You should slow down to maintain a safe following distance due to the traffic slowdown ahead."}
{"id": "train_05936", "split": "train", "clip_key": "2020-0218-103119_011551_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "011551"}, "frames": ["2020-0218-103119_011551_movie_t-3.jpg", "2020-0218-103119_011551_movie_t-2.jpg", "2020-0218-103119_011551_movie_t-1.jpg", "2020-0218-103119_011551_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban neighborhood street approaches a cross street with a zebra crossing; the roadway is a narrow single lane in the ego direction with green shoulder markings and smooth pavement, and traffic is light. A box truck ahead in the ego lane slows to a stop at the crossing, temporarily blocking the lane and setting the ego car's pace. On the right edge close to the camera, a pedestrian in a white coat and black pants carrying a handbag walks away from the ego vehicle along the roadway because there is no sidewalk, moving near the lane. Farther ahead near the intersection, a few pedestrians stand at the curb by the planter, appearing to wait to cross but not entering the lane.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white coat, carrying a handbag, walking on the right side of the road, away from the ego-car, because there is no sidewalk. You should carefully manoeuvre around the pedestrian since they are walking on the roadway with no sidewalk, reducing clearance and increasing collision risk."}
{"id": "train_05937", "split": "train", "clip_key": "2020-0218-103119_018170_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "018170"}, "frames": ["2020-0218-103119_018170_movie_t-3.jpg", "2020-0218-103119_018170_movie_t-2.jpg", "2020-0218-103119_018170_movie_t-1.jpg", "2020-0218-103119_018170_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes runs straight, separated from oncoming lanes to the right by a median rail. The asphalt is dry with patches, and traffic in the ego's direction is slow-moving. A white vehicle directly ahead in the ego lane inches forward, keeping the ego car at a crawl because congestion builds further up the lane. A beige sedan is stopped along the left curb just ahead, appearing parked and outside the flow. Farther right, cars in the opposite direction proceed steadily in their own lanes without conflicting with the ego path. Roadside signs on the left indicate no parking and no stopping along this stretch.", "hazard_reasoning": "There is a white SUV slowly moving forward in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid abrupt stops due to the congestion."}
{"id": "train_05938", "split": "train", "clip_key": "2020-0221-115122_027304_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "027304"}, "frames": ["2020-0221-115122_027304_movie_t-3.jpg", "2020-0221-115122_027304_movie_t-2.jpg", "2020-0221-115122_027304_movie_t-1.jpg", "2020-0221-115122_027304_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban elevated two-lane road runs under a viaduct, with a concrete barrier on the left and columns on the right; the pavement is dry and overall traffic is heavy and slow. A white minivan directly ahead in the left ego lane slows because of congestion further ahead, and the ego vehicle follows at a reduced pace. In the adjacent right lane, a long queue of same-direction cars remains almost stationary beside the ego lane, creeping forward in fits. Farther ahead in the ego lane, several vehicles brake and close gaps, extending the jam. No oncoming traffic or signals appear in view.", "hazard_reasoning": "There is a white minivan slowing down in the ego lane, because of traffic congestion ahead. The minivan's reduction in speed suggests emerging congestion and a risk of rear-end collision if you don't stop immediately."}
{"id": "train_05939", "split": "train", "clip_key": "2020-0206-101736_082088_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "082088"}, "frames": ["2020-0206-101736_082088_movie_t-3.jpg", "2020-0206-101736_082088_movie_t-2.jpg", "2020-0206-101736_082088_movie_t-1.jpg", "2020-0206-101736_082088_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction runs past shops on the left and a fenced verge on the right; the pavement is smooth and traffic is light to moderate. A white truck ahead in the ego lane is slowing down and holds the ego vehicle's pace as it continues straight. Farther ahead, a larger truck in the same lane proceeds steadily, creating a short queue. Overhead gantries display a 50 speed-limit sign and a no U-turn symbol. No pedestrians, cyclists, or unusual obstacles are visible.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The sudden deceleration of the truck ahead increases the risk of a rear-end collision, so the driver should reduce speed to maintain a safe distance."}
{"id": "train_05940", "split": "train", "clip_key": "2020-0203-114632_072042_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "072042"}, "frames": ["2020-0203-114632_072042_movie_t-3.jpg", "2020-0203-114632_072042_movie_t-2.jpg", "2020-0203-114632_072042_movie_t-1.jpg", "2020-0203-114632_072042_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated roadway with two same-direction lanes curves right, bordered by a noise barrier on the left and a guardrail on the right; the pavement looks worn and traffic is heavy and slow. A gray van directly ahead in the ego lane is slowing because a queue forms around the bend, constraining the ego vehicle's pace. To the right, a large white box truck in the adjacent lane creeps forward alongside, limiting lane?hange options. Farther ahead, a line of mixed vehicles including multiple trucks stacks up through the curve and onto the mainline, sustaining stop-and-go movement. Chevron boards on the left wall highlight the right-hand bend.", "hazard_reasoning": "there is a gray van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of the vehicle ahead."}
{"id": "train_05941", "split": "train", "clip_key": "2020-0217-110854_056898_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "056898"}, "frames": ["2020-0217-110854_056898_movie_t-3.jpg", "2020-0217-110854_056898_movie_t-2.jpg", "2020-0217-110854_056898_movie_t-1.jpg", "2020-0217-110854_056898_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with two lanes in the ego direction, intact pavement, and heavy stop-and-go flow. A silver microvan directly ahead in the ego lane is stopped for a red light up ahead, holding the ego car in the queue. In the adjacent left lane, a white sedan nearby and a white coupe farther ahead roll forward slowly alongside toward the same stop, limiting passing options. On the far right, beyond a guardrail, a stationary car remains on the shoulder and does not interact with traffic.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver must stop to avoid a rear-end collision with the stationary vehicle at the intersection."}
{"id": "train_05942", "split": "train", "clip_key": "2020-0218-103119_000033_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "000033"}, "frames": ["2020-0218-103119_000033_movie_t-3.jpg", "2020-0218-103119_000033_movie_t-2.jpg", "2020-0218-103119_000033_movie_t-1.jpg", "2020-0218-103119_000033_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction and smooth pavement runs straight between mid-rise buildings, with directions separated mainly by painted markings and roadside guardrails; traffic is light. Ahead in the ego lane, a white van is stopped at a red traffic light, constraining the ego vehicle. Slightly left ahead, a motorbike in the adjacent same-direction lane continues forward at low speed, passing the stopped van. On the right, several pedestrians wait behind the sidewalk railing near the intersection, staying clear of the road. Overhead signals ahead show red for the ego approach.", "hazard_reasoning": "There is a white van stopped in the ego lane because of a red traffic light. You must stop to comply with the signal and prevent collision with the stopped vehicle."}
{"id": "train_05943", "split": "train", "clip_key": "2020-0227-153144_029996_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "029996"}, "frames": ["2020-0227-153144_029996_movie_t-3.jpg", "2020-0227-153144_029996_movie_t-2.jpg", "2020-0227-153144_029996_movie_t-1.jpg", "2020-0227-153144_029996_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs between tall buildings, with three same-direction lanes and a guardrail at the right; the pavement is dry and traffic is heavy, queuing toward an intersection. A white van directly ahead in the ego lane is stopped for a red traffic signal, holding the ego car. To the left front, a silver sedan in the adjacent lane inches forward with the queue, remaining parallel and not entering the ego lane. On the right, a small white van in the next lane moves slowly past, continuing straight while staying within its lane. The overhead signal at the intersection ahead shows red as vehicles wait.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The driver should stop to comply with the red light and avoid a rear-end collision."}
{"id": "train_05944", "split": "train", "clip_key": "2020-0204-150838_034551_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "034551"}, "frames": ["2020-0204-150838_034551_movie_t-3.jpg", "2020-0204-150838_034551_movie_t-2.jpg", "2020-0204-150838_034551_movie_t-1.jpg", "2020-0204-150838_034551_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three lanes per direction, no physical median, and dry pavement shows moderate traffic as the ego car approaches a signalized intersection. A white van directly ahead in the ego lane proceeds over the crosswalk and continues forward, setting the ego vehicle's pace as the light is green. To the left, a black van in the adjacent lane travels slightly ahead at a similar speed without signaling, remaining parallel to the ego path. On the right side of the roadway, oncoming cars move steadily in their lanes past the intersection. A traffic signal above the junction displays green.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane, because of the green traffic light. The vehicle ahead may brake suddenly if the signal changes or traffic slows, so maintaining a safe following distance and mirroring its speed will help anticipate its actions and avoid collision."}
{"id": "train_05945", "split": "train", "clip_key": "titan_clip_1081_000144_movie", "source": {"subset": "titan", "scenario": "clip_1081", "frame": "000144"}, "frames": ["titan_clip_1081_000144_movie_t-3.jpg", "titan_clip_1081_000144_movie_t-2.jpg", "titan_clip_1081_000144_movie_t-1.jpg", "titan_clip_1081_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban street lined with mid- and high-rise buildings appears, a narrow two-way road without a marked centerline, with patched but smooth pavement and light traffic. A small gray minivan ahead in the same direction moves away near the center of the lane, modestly pacing the ego vehicle. On the left, a pedestrian wearing a gray shirt walks away along the roadway edge, close to the travel lane and possibly entering the ego path. On the right, another pedestrian with a backpack walks away on the shoulder, keeping near the curb. Parked vans and parking-lot entrances border both sides, tightening the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, walking on the left side of the road, away from the ego car. The pedestrian's proximity to the traffic lane requires the driver to manoeuvre carefully to maintain safe clearance."}
{"id": "train_05946", "split": "train", "clip_key": "titan_clip_1337_000048_movie", "source": {"subset": "titan", "scenario": "clip_1337", "frame": "000048"}, "frames": ["titan_clip_1337_000048_movie_t-3.jpg", "titan_clip_1337_000048_movie_t-2.jpg", "titan_clip_1337_000048_movie_t-1.jpg", "titan_clip_1337_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian.", "environment_perception": "A narrow urban back street with a single shared lane, no median or centerline, and smooth asphalt shows light traffic throughout. The ego-vehicle proceeds straight as pedestrians dominate the scene. On the left edge ahead, a pedestrian in a white shirt and black pants pushes a trolley of boxes toward the ego-vehicle along the lane, occupying part of the path and constraining the ego-vehicle's pace. Farther ahead near the right edge, three pedestrians walk toward the camera, keeping to the side but may step into the lane as they pass the trolley. A parked scooter and a shop sign sit close to the left curb, slightly narrowing the usable lane; no notable traffic signals or posted speeds are visible.", "hazard_reasoning": "A pedestrian wearing a white shirt and black pants is pushing a trolley along the left side of the lane, toward the ego car. The driver should manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_05947", "split": "train", "clip_key": "2020-0129-105040_061380_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061380"}, "frames": ["2020-0129-105040_061380_movie_t-3.jpg", "2020-0129-105040_061380_movie_t-2.jpg", "2020-0129-105040_061380_movie_t-1.jpg", "2020-0129-105040_061380_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian movements nearby.", "environment_perception": "A narrow urban two-way street with one lane per direction and no median extends ahead; the pavement looks smooth with red edge strips, and traffic is light with no vehicles ahead or oncoming. On the left edge slightly ahead, a pedestrian wearing blue pants and a purple coat walks away along the red shoulder, close to the carriageway and may step into the ego lane. On the right near a tree by a driveway, another pedestrian stands at the curb facing the roadway, potentially entering the oncoming side but not moving. Farther ahead on the left sidewalk, a third person walks away with ample clearance and little impact. A large 20 speed marking is painted on the road, and bicycles are parked along the left curb narrowing the shoulder.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a purple coat and walking away from the ego car on the left side of the road. The pedestrian could unexpectedly veer toward the roadway, so the driver should remain vigilant and be prepared to adjust speed."}
{"id": "train_05948", "split": "train", "clip_key": "2020-0207-101955_017316_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "017316"}, "frames": ["2020-0207-101955_017316_movie_t-3.jpg", "2020-0207-101955_017316_movie_t-2.jpg", "2020-0207-101955_017316_movie_t-1.jpg", "2020-0207-101955_017316_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection with painted lane divisions and smooth pavement, and traffic is moderate. Ahead in the ego lane, a small white truck with a green tarp drives away from the camera, continuing straight through the junction and setting the pace. In the adjacent right lane, a light van at the near right edge rolls forward beside the ego vehicle and edges into the intersection, potentially merging afterward. In the opposing lanes, a white minivan advances through the intersection while a black sedan to its right continues straight, both passing ahead as oncoming traffic. Overhead traffic lights are visible at the junction.", "hazard_reasoning": "There is a white truck with a green tarp driving in the ego lane away from the ego car. The truck may reduce speed or brake unexpectedly, so the driver should maintain a safe following distance and remain alert."}
{"id": "train_05949", "split": "train", "clip_key": "2020-0226-101332_032404_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "032404"}, "frames": ["2020-0226-101332_032404_movie_t-3.jpg", "2020-0226-101332_032404_movie_t-2.jpg", "2020-0226-101332_032404_movie_t-1.jpg", "2020-0226-101332_032404_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction and no median runs beside a railing and trees; the wet pavement suggests recent rain, and traffic is light in our direction but heavy in the oncoming lane to the right. Ahead in the ego lane, a white van slows because of traffic congestion further up the lane, setting the pace for the ego-vehicle. To the right, a continuous line of white vans and other vehicles approaches slowly in the opposite lane, filling the oncoming stream and leaving no gaps for turns.", "hazard_reasoning": "There is a white van slowing down in the ego lane because of the traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_05950", "split": "train", "clip_key": "2020-0218-103119_005987_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "005987"}, "frames": ["2020-0218-103119_005987_movie_t-3.jpg", "2020-0218-103119_005987_movie_t-2.jpg", "2020-0218-103119_005987_movie_t-1.jpg", "2020-0218-103119_005987_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking towards car", "environment_perception": "An urban residential street appears, a very narrow two-way road without a median and with smooth asphalt; traffic is light with no moving vehicles ahead. A pedestrian in a brown coat carrying a bag walks toward the ego car along the left edge ahead, near the travel line. On the right, a silver minivan and another car sit parked in driveways near a corner, slightly narrowing the roadway but remaining static. A bicycle rests at the right curb by the corner and stays out of the lane. A roadside convex mirror on the left indicates a side street and aids visibility.", "hazard_reasoning": "There is a pedestrian wearing a brown coat and carrying a bag, walking on the left side of the road, towards the ego car. Be aware as this pedestrian may step into the road in front of the vehicle, posing a potential collision risk."}
{"id": "train_05951", "split": "train", "clip_key": "2020-0227-153144_026371_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "026371"}, "frames": ["2020-0227-153144_026371_movie_t-3.jpg", "2020-0227-153144_026371_movie_t-2.jpg", "2020-0227-153144_026371_movie_t-1.jpg", "2020-0227-153144_026371_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the van immediately.", "environment_perception": "An urban divided road with two lanes in the ego direction and a raised median has smooth pavement and light traffic as it approaches an intersection. A white van directly ahead in the ego lane is stopped at a red traffic light, holding the ego vehicle at the crosswalk. Oncoming cars beyond the median move steadily through the junction in the opposite lanes. A few pedestrians walk along the sidewalks and near the crosswalks to the right but keep clear of the roadway.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid collision with the halted vehicle and comply with the traffic signal."}
{"id": "train_05952", "split": "train", "clip_key": "2020-0214-102601_010642_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "010642"}, "frames": ["2020-0214-102601_010642_movie_t-3.jpg", "2020-0214-102601_010642_movie_t-2.jpg", "2020-0214-102601_010642_movie_t-1.jpg", "2020-0214-102601_010642_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid hitting the stopped hatchback.", "environment_perception": "An urban multi-lane two-way street runs straight with no physical median, worn but serviceable asphalt, and light to moderate traffic. Ahead in the ego lane, a gray hatchback slows and stops near the intersection because of the pedestrian crossing, temporarily setting the pace. To the left, a group of pedestrians waits at a curbside bus stop behind railings and does not enter the roadway. On the oncoming side to the right, a black taxi and a white van stand near the curb facing the ego direction, remaining stationary and outside the ego path. An overhead sign displays a 30 speed limit with a pedestrian crossing symbol.", "hazard_reasoning": "There is a gray hatchback stopped near the intersection, in the ego lane, because of the pedestrian crossing ahead in the intersection. Stop to avoid hitting the stationary vehicle causing a sudden obstruction."}
{"id": "train_05953", "split": "train", "clip_key": "titan_clip_480_000030_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_480_000030_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_480_000030_movie_t-3_augB1.jpg", "titan_clip_480_000030_movie_t-2_augB1.jpg", "titan_clip_480_000030_movie_t-1_augB1.jpg", "titan_clip_480_000030_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian ahead", "environment_perception": "A dense urban shopping street with a narrow single-lane roadway of block paving runs straight between storefronts, bounded by bollards; pavement looks even and vehicular traffic is very light. On the right side of the road, a pedestrian in a white shirt and black pants walks away from the ego vehicle in the carriageway, using the road because the sidewalk is busy, and remains within the ego path. Farther ahead near the middle of the lane, two other pedestrians walk away in the same direction and continue along the travel path, which constrains the ego vehicle's pace. Restaurant signs, cones, and menu boards project from the right frontage and slightly narrow the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and walking on the right side of the road, away from the ego car, because of a busy sidewalk. The pedestrian may step into the roadway unpredictably due to sidewalk congestion, so slow down for safety."}
{"id": "train_05954", "split": "train", "clip_key": "titan_clip_94_000384_movie", "source": {"subset": "titan", "scenario": "clip_94", "frame": "000384"}, "frames": ["titan_clip_94_000384_movie_t-3.jpg", "titan_clip_94_000384_movie_t-2.jpg", "titan_clip_94_000384_movie_t-1.jpg", "titan_clip_94_000384_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian crossing ahead", "environment_perception": "An urban commercial street with trees and shopfronts, a narrow one-lane roadway without a median and smooth pavement, carries light traffic as the vehicle proceeds straight. A white van ahead in the ego lane moves toward the upcoming crosswalk and continues along the lane, setting the pace. On the left side near the curb, a white sedan is stopped, reducing lateral space but staying outside the travel line. At the crosswalk ahead, a pedestrian wearing a gray coat crosses from left to right across the ego lane. A clearly marked zebra crosswalk spans the road at a small intersection.", "hazard_reasoning": "There is a pedestrian wearing a gray coat, crossing to the right side of the road, at a crosswalk. The driver should be aware because the crossing pedestrian may enter the vehicle's path unexpectedly, requiring timely speed adjustment."}
{"id": "train_05955", "split": "train", "clip_key": "2020-0213-143552_006496_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "006496"}, "frames": ["2020-0213-143552_006496_movie_t-3.jpg", "2020-0213-143552_006496_movie_t-2.jpg", "2020-0213-143552_006496_movie_t-1.jpg", "2020-0213-143552_006496_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban arterial with two lanes in each direction and a painted centerline runs slightly uphill; the pavement is dry and traffic is light, with steady oncoming flow to the right of center. A gray box truck is stopped on the left edge ahead in the ego lane, rear doors open as it is being unloaded, and it blocks much of the lane, constraining the ego vehicle's path. A small van and a white car travel toward the camera in the oncoming lanes to the right, passing smoothly. Two pedestrians walk along the left sidewalk near the shops beside the unloading truck and remain on the walkway. No notable signals or signs are visible, and the remainder of the roadway appears clear.", "hazard_reasoning": "There is a gray truck parked and being unloaded, on the left side of the road, in the ego lane. Maneuver carefully around the truck as its stationary position and ongoing unloading activity may obstruct the lane and pose a collision risk."}
{"id": "train_05956", "split": "train", "clip_key": "titan_clip_882_000102_movie", "source": {"subset": "titan", "scenario": "clip_882", "frame": "000102"}, "frames": ["titan_clip_882_000102_movie_t-3.jpg", "titan_clip_882_000102_movie_t-2.jpg", "titan_clip_882_000102_movie_t-1.jpg", "titan_clip_882_000102_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "be aware of the parked truck", "environment_perception": "An urban commercial street with a single narrow lane and no median is shown; the pavement is smooth and traffic is light, with no oncoming vehicles visible. Ahead along the left curb, a white truck is parked within a coned loading area, constricting the ego lane. Farther ahead in the same direction, another white box truck remains stopped at the left curb, continuing the narrowing. On the right sidewalk near the camera, a uniformed worker stands beside a coned construction zone at the curb, close to the roadway.", "hazard_reasoning": "There is a white truck parked on the left side of the road. The parked truck partially blocks the roadway and sightlines, so the driver should be cautious of hidden pedestrians or vehicles emerging around it."}
{"id": "train_05957", "split": "train", "clip_key": "2020-0203-154554_010780_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "010780"}, "frames": ["2020-0203-154554_010780_movie_t-3.jpg", "2020-0203-154554_010780_movie_t-2.jpg", "2020-0203-154554_010780_movie_t-1.jpg", "2020-0203-154554_010780_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three lanes in the ego direction passes between mid-rise buildings; a planted median on the right divides oncoming traffic, and the pavement is smooth with moderate, steadily moving flow. A gray van drives ahead in the ego lane, gradually pulling away and loosely setting the pace. To the right, a dark minivan alongside continues forward slightly faster, overtaking without crossing lanes. In the left lane near the curb, a white box truck ahead moves slowly at the roadside, backing up traffic in that lane. Additional cars travel further ahead in all lanes but maintain spacing, and no signals or unusual signs are prominent.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05958", "split": "train", "clip_key": "titan_clip_801_000306_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_801_000306_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_801_000306_movie_t-3_augB1.jpg", "titan_clip_801_000306_movie_t-2_augB1.jpg", "titan_clip_801_000306_movie_t-1_augB1.jpg", "titan_clip_801_000306_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrian.", "environment_perception": "A narrow urban two-way street with shops lines both sides, the pavement looks smooth, and traffic is light; the ego vehicle proceeds along the left side with no marked centerline. A pedestrian in a white T-shirt and gray pants crosses ahead from the right toward the left directly in front of the ego car, constraining its pace. Another pedestrian farther ahead near the left edge walks away along the roadway in the same lane. No moving vehicles approach or lead, while a parked car at the left curb and rows of parked bicycles and shop signboards on the right slightly narrow the passage.", "hazard_reasoning": "There's a pedestrian wearing a white t-shirt, wearing gray pants, crossing the street, in front of the ego car, to the left side. The driver should yield because the pedestrian is entering the vehicle's path and may cross unexpectedly."}
{"id": "train_05959", "split": "train", "clip_key": "2020-0203-114632_060722_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "060722"}, "frames": ["2020-0203-114632_060722_movie_t-3.jpg", "2020-0203-114632_060722_movie_t-2.jpg", "2020-0203-114632_060722_movie_t-1.jpg", "2020-0203-114632_060722_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene with mid-rise buildings lines a single-lane road that curves right, with smooth dry pavement and light traffic. The lane runs beside a parallel arterial on the right, separated by a concrete barrier and railings, and merge chevrons mark the approach to the main road. A pedestrian on the left sidewalk walks away from the camera along the building fronts, staying off the carriageway and posing no immediate conflict. On the adjacent arterial to the right, a few vehicles ahead proceed straight in the same general direction, currently not interacting with the ego vehicle. Blue overhead direction boards span the road ahead, and a pedestrian crossing sign stands on the left.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05960", "split": "train", "clip_key": "2020-0214-145407_003210_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "003210"}, "frames": ["2020-0214-145407_003210_movie_t-3.jpg", "2020-0214-145407_003210_movie_t-2.jpg", "2020-0214-145407_003210_movie_t-1.jpg", "2020-0214-145407_003210_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs under an elevated structure, with the ego car in the left of two same-direction lanes; pavement is smooth and traffic moves at a steady, moderate pace. Construction fencing lines the left shoulder beneath the viaduct, and a planted median separates oncoming lanes to the right. A white van directly ahead in the ego lane pulls away as the flow advances, opening a small gap. Farther ahead in the same lane, another small van continues steadily and shapes the pace in the distance. Vehicles in the right adjacent lane, including several vans, travel alongside slightly ahead without signaling or drifting toward the ego lane. No signals or unusual signs are prominent.", "hazard_reasoning": "There is a white van driving away from the ego car, in front of the ego car in the ego lane, because traffic ahead is moving forward. Follow the vehicle ahead to maintain a safe distance and anticipate the upcoming stop at the red light."}
{"id": "train_05961", "split": "train", "clip_key": "titan_clip_117_000108_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_117_000108_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_117_000108_movie_t-3_augB1.jpg", "titan_clip_117_000108_movie_t-2_augB1.jpg", "titan_clip_117_000108_movie_t-1_augB1.jpg", "titan_clip_117_000108_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street without a centerline runs between tall buildings; the asphalt looks mostly smooth with some patches, and traffic is light. Ahead in the middle of the roadway, a pedestrian wearing a brown shirt pulls a cart away from the ego vehicle, occupying the ego path. A small delivery truck is stopped along the left curb ahead, slightly protruding and narrowing the usable lane. Farther ahead, an oncoming car approaches in the opposite lane at a steady pace as the space tightens near the pedestrian and the stopped truck.", "hazard_reasoning": "There is a pedestrian wearing a brown shirt, pulling a cart in the middle of the road, away from the ego car. The pedestrian poses an obstruction in the travel lane, so the driver should slow down to maintain safe distance and avoid collision."}
{"id": "train_05962", "split": "train", "clip_key": "2020-0204-150838_054014_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "054014"}, "frames": ["2020-0204-150838_054014_movie_t-3.jpg", "2020-0204-150838_054014_movie_t-2.jpg", "2020-0204-150838_054014_movie_t-1.jpg", "2020-0204-150838_054014_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection under elevated expressways is shown, with painted lane divisions on dry, well-kept pavement and light traffic at a signalized junction. Ahead, a cyclist in front crosses the zebra crossing from left to right at a steady pace, doing so while the traffic light facing the ego is red and briefly occupying the ego's path. Ahead-left, a second cyclist also rides rightward across the same crosswalk, clearing the lane as the red phase continues. Farther to the right across the junction, a few vehicles proceed along the cross street without interacting with the ego.", "hazard_reasoning": "There is a cyclist in front of the ego car, crossing the pedestrian crossing to the right side, because of a red traffic light. Drivers must stop to allow the cyclist to clear the crossing safely and avoid a collision."}
{"id": "train_05963", "split": "train", "clip_key": "titan_clip_487_000210_movie", "source": {"subset": "titan", "scenario": "clip_487", "frame": "000210"}, "frames": ["titan_clip_487_000210_movie_t-3.jpg", "titan_clip_487_000210_movie_t-2.jpg", "titan_clip_487_000210_movie_t-1.jpg", "titan_clip_487_000210_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single shared lane runs between storefronts on the left and a long construction wall on the right; the pavement is patched but serviceable, and there is no moving vehicle traffic. On the right side, a pedestrian in black pants and a white shirt with a backpack walks toward the car close to the lane edge and may enter its path. Farther ahead on the right, two pedestrians also approach the camera along the hoarding, constraining the vehicle's pace. On the left, a small group of pedestrians walks away near the curb by the shops, some near the roadway. A bicycle is parked at the left curb and a parked vehicle sits at the right foreground. A painted 20 speed marking is visible on the road.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, carrying a backpack, and walking towards the ego car, on the right side of the road. The pedestrian is approaching the vehicle's path, so the driver should slow down to avoid a potential collision."}
{"id": "train_05964", "split": "train", "clip_key": "titan_clip_180_000234_movie", "source": {"subset": "titan", "scenario": "clip_180", "frame": "000234"}, "frames": ["titan_clip_180_000234_movie_t-3.jpg", "titan_clip_180_000234_movie_t-2.jpg", "titan_clip_180_000234_movie_t-1.jpg", "titan_clip_180_000234_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van", "environment_perception": "An urban two-way street with one lane per direction and no median extends through midrise buildings; the pavement is smooth and traffic is light to moderate. Ahead on the left edge of the ego lane, a gray van is parked for unloading and partially blocks the lane, narrowing the path. Slightly farther ahead in the same direction, a small utility truck proceeds slowly near the centerline, limiting the pace. In the opposite direction, several cars travel steadily toward the camera in their lane. The signal over the intersection ahead displays green.", "hazard_reasoning": "There is a gray van parked on the left side of the road, in the ego lane, because it is being unloaded. Therefore, the driver should carefully manoeuvre around the parked van to avoid collision and maintain safe lane positioning."}
{"id": "train_05965", "split": "train", "clip_key": "2020-0226-140503_105569_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "105569"}, "frames": ["2020-0226-140503_105569_movie_t-3.jpg", "2020-0226-140503_105569_movie_t-2.jpg", "2020-0226-140503_105569_movie_t-1.jpg", "2020-0226-140503_105569_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the truck to avoid collision", "environment_perception": "An urban divided boulevard with a landscaped median and smooth pavement appears lightly to moderately trafficked. The ego travels on a single lane in its carriageway, with occasional slowing toward an intersection ahead. A gray box truck directly ahead in the ego lane slows because of congestion near the intersection, constraining the ego vehicle's pace. Several cars in the oncoming lanes to the right approach steadily within their lanes and pose no immediate interaction. A cyclist on the left-side path rides parallel behind a guardrail and remains clear of the roadway.", "hazard_reasoning": "There is a gray truck slowing in the ego lane because of traffic congestion ahead at the intersection. The driver should stop to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_05966", "split": "train", "clip_key": "2020-0226-140503_009167_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "009167"}, "frames": ["2020-0226-140503_009167_movie_t-3.jpg", "2020-0226-140503_009167_movie_t-2.jpg", "2020-0226-140503_009167_movie_t-1.jpg", "2020-0226-140503_009167_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and maintain safe following distance.", "environment_perception": "An urban multi-lane two-way road approaches a wide signalized intersection with no physical median and smooth pavement, and traffic is moderate and generally flowing. A gray van directly ahead in the ego lane is stopped at the junction with brake lights on, yielding to oncoming traffic before turning right, which holds the ego vehicle. Oncoming cars travel straight through the intersection ahead in their lanes, preventing the van's turn. A silver van in the lane to the right of the ego vehicle proceeds straight through the green light and moves away. Overhead signals show green for through traffic.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, because it is yielding to oncoming traffic. Stop and maintain safe following distance to avoid rear-end collision."}
{"id": "train_05967", "split": "train", "clip_key": "2020-0203-154554_041001_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "041001"}, "frames": ["2020-0203-154554_041001_movie_t-3.jpg", "2020-0203-154554_041001_movie_t-2.jpg", "2020-0203-154554_041001_movie_t-1.jpg", "2020-0203-154554_041001_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban single-lane roadway under an elevated structure curves gently right, with a concrete barrier on the left and a guardrail and noise screen on the right; the pavement is dry and traffic in this lane is light while the adjacent oncoming side is heavy. A white truck ahead in the ego lane drives away from the camera at steady speed, setting the pace. Farther ahead in the same lane, a small dark car continues along the curve with a large gap. To the left beyond the median barrier, multiple oncoming cars creep in congestion, remaining separated from the ego vehicle. No pedestrians, work zones, or obstructions are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05968", "split": "train", "clip_key": "titan_clip_1307_000510_movie", "source": {"subset": "titan", "scenario": "clip_1307", "frame": "000510"}, "frames": ["titan_clip_1307_000510_movie_t-3.jpg", "titan_clip_1307_000510_movie_t-2.jpg", "titan_clip_1307_000510_movie_t-1.jpg", "titan_clip_1307_000510_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the group of pedestrians", "environment_perception": "The scene is an urban shopping street with a narrow undivided one-lane roadway, smooth pavement, and light vehicle flow amid heavy pedestrian activity; several delivery trucks are stopped along the sides, narrowing the corridor. On the right near the ego lane, a man and a child walk toward the camera along the curb, edging into the lane and constraining the vehicle's pace. At the left edge, three pedestrians stand together talking at the roadside, close to the lane and may step into the path. Farther ahead in the ego lane, a small white van proceeds slowly through the crowd, effectively setting the speed for the ego vehicle.", "hazard_reasoning": "There are three pedestrians talking in a group, standing at the left side of the road. The group could step into the roadway unexpectedly, so the driver should manoeuvre carefully around them to avoid collision."}
{"id": "train_05969", "split": "train", "clip_key": "titan_clip_12_000060_movie", "source": {"subset": "titan", "scenario": "clip_12", "frame": "000060"}, "frames": ["titan_clip_12_000060_movie_t-3.jpg", "titan_clip_12_000060_movie_t-2.jpg", "titan_clip_12_000060_movie_t-1.jpg", "titan_clip_12_000060_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban side street with a single narrow two-way lane leads to a zebra-crossed intersection with a larger road; brick paving is smooth and traffic is light. Ahead on the left edge, a pedestrian wearing black pants and a blue T-shirt pushes a blue bin and walks away from the ego vehicle along the roadway because there is no sidewalk, occupying space in the ego lane. At the junction, a black sedan travels right to left across the ego path on the main street, briefly blocking the way. Farther ahead, several pedestrians cross at the zebra crossing. A red triangular stop sign and a no-stopping sign stand on the left beside a line of traffic cones.", "hazard_reasoning": "There is a pedestrian wearing black pants and a blue t-shirt, pushing a blue bin, and walking away from the ego car, on the left side of the road, because there is no sidewalk. The driver should stop to avoid hitting the pedestrian who may enter the vehicle's path."}
{"id": "train_05970", "split": "train", "clip_key": "titan_clip_1172_000216_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1172_000216_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1172_000216_movie_t-3_augB1.jpg", "titan_clip_1172_000216_movie_t-2_augB1.jpg", "titan_clip_1172_000216_movie_t-1_augB1.jpg", "titan_clip_1172_000216_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban shopping street appears narrow and brick-paved with no marked lanes or divider, functioning as a shared space with no visible motor traffic and smooth pavement. Immediately ahead, a pedestrian wearing black pants and a shirt, carrying a handbag, crosses from the right to the left directly in front of the car, occupying the ego lane and constraining its pace. Slightly farther ahead, a man in a white shirt also crosses right to left across the lane, continuing through the vehicle's path. At the right edge, another pedestrian walks leftward near the curb, close to but not entering the lane. No signals or posted speed signs are clearly visible.", "hazard_reasoning": "There is a pedestrian wearing black pants and a shirt, carrying a handbag, and crossing the street, in front of the ego car, from the right side to the left side. The driver should stop to avoid colliding with the pedestrian entering the vehicle's path."}
{"id": "train_05971", "split": "train", "clip_key": "titan_clip_1297_000108_movie", "source": {"subset": "titan", "scenario": "clip_1297", "frame": "000108"}, "frames": ["titan_clip_1297_000108_movie_t-3.jpg", "titan_clip_1297_000108_movie_t-2.jpg", "titan_clip_1297_000108_movie_t-1.jpg", "titan_clip_1297_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane per direction has no median and patched but smooth asphalt, and traffic is light. An oncoming white truck waits near the right curb, jutting slightly into its lane and narrowing the roadway. A small car ahead in the ego lane moves away at a steady pace. A pedestrian wearing a blue shirt stands on the right side of the road by cones at the curb, close to the traveled way and relevant to the ego path. Construction fencing and workers line the left side, with additional cones and shopfronts along the right.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, standing on the right side of the road. The pedestrian's presence near the active roadway and construction area requires slowing down to ensure their safety."}
{"id": "train_05972", "split": "train", "clip_key": "2020-0220-102630_027030_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "027030"}, "frames": ["2020-0220-102630_027030_movie_t-3.jpg", "2020-0220-102630_027030_movie_t-2.jpg", "2020-0220-102630_027030_movie_t-1.jpg", "2020-0220-102630_027030_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the stopped truck ahead", "environment_perception": "An urban commercial street with two same-direction lanes runs past storefronts and a curbside railing, the pavement smooth and traffic slow to a near stop. The ego car is in the left lane. A truck directly ahead in the ego lane is stationary with its emergency flashers on, aligning with the note that it is stopped because of congestion ahead and blocking the path. To the right, a smaller tarp-covered truck in the adjacent lane creeps forward past the ego vehicle, narrowing the gap and hindering a lane change. Farther along the right lane, several cars queue and inch ahead, indicating the slow flow extends beyond the immediate scene.", "hazard_reasoning": "There is a gray truck with its emergency flashers on, stopped in the ego-car lane, because of traffic congestion ahead. Drivers should be cautious because this stopped vehicle blocks the path and reduces visibility, requiring attention to avoid collision."}
{"id": "train_05973", "split": "train", "clip_key": "titan_clip_451_000534_movie", "source": {"subset": "titan", "scenario": "clip_451", "frame": "000534"}, "frames": ["titan_clip_451_000534_movie_t-3.jpg", "titan_clip_451_000534_movie_t-2.jpg", "titan_clip_451_000534_movie_t-1.jpg", "titan_clip_451_000534_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian on right side.", "environment_perception": "A compact urban intersection opens onto a narrow two-way side street with no median or centerline; the pavement is dry and smooth, and vehicle traffic is light amid steady pedestrian movement. On the right side of the intersection, a man wearing a black shirt and black pants walks away from the ego vehicle along the curb. Ahead on the right, a small group of pedestrians continues along the sidewalk beside a van stopped at the curb, close to the mouth of the side street and near the ego path. At the left corner, another pedestrian lingers by bollards near the curb, close to the roadway edge. Farther down the street, a truck travels away from the camera.", "hazard_reasoning": "There is a man wearing a black shirt and black pants and walking on the right side of the intersection, away from the ego car. The driver should be aware of his presence as he may enter the roadway unexpectedly."}
{"id": "train_05974", "split": "train", "clip_key": "titan_clip_1338_000030_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1338_000030_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1338_000030_movie_t-3_augB1.jpg", "titan_clip_1338_000030_movie_t-2_augB1.jpg", "titan_clip_1338_000030_movie_t-1_augB1.jpg", "titan_clip_1338_000030_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban neighborhood street scene shows the ego car approaching a narrow two-way side street with one lane each way and no median; the pavement is smooth and traffic is light with no moving vehicles. Ahead, a pedestrian wearing a gray T-shirt walks away on the left side of the road beyond the zebra crossing, moving along the ego vehicle's projected path. At the near-left corner by a shop, a woman stands beside parked bicycles at the curb, waiting near the crosswalk and may step out. On the right sidewalk near a tree, another person waits by the crosswalk. A pedestrian crossing sign is visible on the right, and bicycles are parked along the left curb.", "hazard_reasoning": "There is a pedestrian wearing a gray T-shirt and walking on the left side of the road, away from the ego car. Slow down to ensure you can stop safely if the pedestrian unexpectedly crosses into your path."}
{"id": "train_05975", "split": "train", "clip_key": "2020-0220-151845_031271_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "031271"}, "frames": ["2020-0220-151845_031271_movie_t-3.jpg", "2020-0220-151845_031271_movie_t-2.jpg", "2020-0220-151845_031271_movie_t-1.jpg", "2020-0220-151845_031271_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial runs under an elevated expressway, with three lanes in the ego direction and a low median separating oncoming traffic; the dry pavement carries moderate, slow-moving flow. A small white van ahead in the left lane moves right and merges into the ego lane, taking the space ahead of the camera vehicle. A flatbed truck covered by a yellow tarpaulin is directly ahead in the ego lane and proceeds slowly, constraining the ego vehicle's speed. A black SUV in the right lane travels slightly ahead, continuing straight and overtaking the ego vehicle. Additional trucks remain in the far left lane, contributing to the sluggish pace.", "hazard_reasoning": "There is a white van lane changing from the left lane, to the ego lane. This maneuver could lead to a collision if the van enters the ego-lane unexpectedly, so the driver should slow down."}
{"id": "train_05976", "split": "train", "clip_key": "2020-0205-103411_041416_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "041416"}, "frames": ["2020-0205-103411_041416_movie_t-3.jpg", "2020-0205-103411_041416_movie_t-2.jpg", "2020-0205-103411_041416_movie_t-1.jpg", "2020-0205-103411_041416_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial runs under elevated structures with two lanes in the ego direction, a metal median separating oncoming traffic to the right, dry pavement, and heavy, slow flow at an intersection. A black hatchback directly ahead in the ego lane is stopped in a queue due to congestion and holds the ego vehicle. Slightly ahead to the left, a white van in the adjacent same-direction lane is also stopped with the line of cars. On the far side of the divider, a white sedan proceeds in the oncoming lane through the junction without interacting. Pedestrians gather along the right sidewalk near shops, none entering the crosswalk. Overhead signs indicate through movement.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop immediately to avoid colliding with the halted vehicle."}
{"id": "train_05977", "split": "train", "clip_key": "2020-0226-101332_048942_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "048942"}, "frames": ["2020-0226-101332_048942_movie_t-3.jpg", "2020-0226-101332_048942_movie_t-2.jpg", "2020-0226-101332_048942_movie_t-1.jpg", "2020-0226-101332_048942_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane boulevard with left-hand traffic runs straight through a signalized intersection, divided by a low median; the pavement is dry and smooth, and traffic is moderate and flowing steadily. A silver van directly ahead in the ego lane accelerates through the intersection and gradually pulls away from the camera, leading the ego vehicle. On the near right edge, a white van is stopped in the right-turn lane at the crosswalk, remaining beside the ego path. Several pedestrians wait at the left-side curb near the crosswalk, standing clear of the roadway. A small service truck is stopped at the left curb just beyond the intersection. Overhead traffic signals and crosswalks are clearly visible, and oncoming traffic moves along the far carriageway beyond the median.", "hazard_reasoning": "There is a silver van in front of the ego car, in the ego lane, driving away from the ego car. The van may slow down or stop suddenly, so maintain a safe following distance aligned with the warning to follow the vehicle ahead."}
{"id": "train_05978", "split": "train", "clip_key": "2020-0207-101955_122802_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "122802"}, "frames": ["2020-0207-101955_122802_movie_t-3.jpg", "2020-0207-101955_122802_movie_t-2.jpg", "2020-0207-101955_122802_movie_t-1.jpg", "2020-0207-101955_122802_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial runs beneath an elevated expressway, the pavement appears smooth, and traffic is heavy and largely stopped. A white van directly ahead in the ego lane is stopped because of congestion ahead, keeping the ego vehicle queued. In the lane to the left, a pink garbage truck waits with brake lights on, moving only slightly and reducing space alongside the ego car. Farther ahead in the center lane, a tall box truck sits in the line of vehicles, contributing to the slow queue. No salient signals are visible, and there are no pedestrians or cyclists.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the stopped vehicle due to the upstream congestion."}
{"id": "train_05979", "split": "train", "clip_key": "2020-0206-142535_047106_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "047106"}, "frames": ["2020-0206-142535_047106_movie_t-3.jpg", "2020-0206-142535_047106_movie_t-2.jpg", "2020-0206-142535_047106_movie_t-1.jpg", "2020-0206-142535_047106_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop for pedestrians in crosswalk.", "environment_perception": "An urban multi-lane road runs between tall buildings with smooth pavement and moderate traffic; a separated lane bounded by double white lines lies to the right as the route approaches a railway bridge ahead. A black car directly ahead in the ego lane slows and sets the pace. A white van slightly ahead in the lane to the left continues forward steadily and edges past. Farther ahead, a small white car in the same lane moves slowly within the queue. An overhead sign shows a 50 speed limit.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane, because pedestrians are walking in a crosswalk. You should stop for the crossing pedestrians to avoid a collision."}
{"id": "train_05980", "split": "train", "clip_key": "titan_clip_641_000516_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_641_000516_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_641_000516_movie_t-3_augB1.jpg", "titan_clip_641_000516_movie_t-2_augB1.jpg", "titan_clip_641_000516_movie_t-1_augB1.jpg", "titan_clip_641_000516_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian moving into lane", "environment_perception": "A narrow urban street with no centerline runs between tall buildings, the asphalt smooth and dry, and there are no moving vehicles. Ahead on the left, a pedestrian in a white T-shirt carrying a bag walks away along the left edge and drifts into the ego lane, potentially entering the path. On the right at the curb, another person in a white shirt stands looking at a device, remaining stationary near the edge but outside the lane. Farther ahead the road continues straight past storefronts, and an open parking garage entrance is visible on the left.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, carrying a bag, walking on the left side of the road, away from the ego car, into the ego lane. The pedestrian may enter the vehicle's path unexpectedly, so the driver should be cautious to avoid a collision."}
{"id": "train_05981", "split": "train", "clip_key": "titan_clip_1272_000216_movie", "source": {"subset": "titan", "scenario": "clip_1272", "frame": "000216"}, "frames": ["titan_clip_1272_000216_movie_t-3.jpg", "titan_clip_1272_000216_movie_t-2.jpg", "titan_clip_1272_000216_movie_t-1.jpg", "titan_clip_1272_000216_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with shopfronts on both sides lacks lane markings or sidewalks; the worn pavement is dry and traffic flow is light, consisting mostly of pedestrians and a bicycle. On the right edge near the vehicle, a pedestrian wearing all gray and carrying a plastic bag walks along the roadway because there is no sidewalk, moving in the same direction and encroaching slightly into the lane. Farther ahead near the center-left, several pedestrians walk away from the camera and occasionally drift across the lane, influencing the vehicle's pace through the shared space. Ahead on the left, a bicyclist rides slowly in the same direction close to the curb and then steadies near parked items, reducing available space. Parked bicycles, potted plants, and stacked boxes line the edges and form minor obstacles.", "hazard_reasoning": "There is a pedestrian wearing all gray and carrying a plastic bag, walking on the right side of the lane, because there is no sidewalk. The driver should slow down because the pedestrian is forced into the roadway and may enter the vehicle's path."}
{"id": "train_05982", "split": "train", "clip_key": "titan_clip_1032_000348_movie", "source": {"subset": "titan", "scenario": "clip_1032", "frame": "000348"}, "frames": ["titan_clip_1032_000348_movie_t-3.jpg", "titan_clip_1032_000348_movie_t-2.jpg", "titan_clip_1032_000348_movie_t-1.jpg", "titan_clip_1032_000348_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban residential two-way street without a centerline unfolds ahead; the asphalt is smooth, bordered by buildings and green railings, and traffic is very light with no moving vehicles. Ahead in the ego vehicle's path along the left edge, a pedestrian wearing a backpack and black pants walks away in the roadway because there is no sidewalk, staying close to the curb and temporarily constraining the ego's pace. No oncoming vehicles are visible. Parked vehicles, including a covered car at a driveway on the left, sit stationary and slightly narrow the corridor. No prominent traffic signals or posted speeds appear, and buildings on both sides limit distant visibility down the straight corridor.", "hazard_reasoning": "There is a pedestrian wearing a backpack and black pants walking in front of and away from the ego car, on the left side of the lane, because there is no sidewalk. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_05983", "split": "train", "clip_key": "2020-0220-102630_105307_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "105307"}, "frames": ["2020-0220-102630_105307_movie_t-3.jpg", "2020-0220-102630_105307_movie_t-2.jpg", "2020-0220-102630_105307_movie_t-1.jpg", "2020-0220-102630_105307_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction and a painted center line runs between mid-rise buildings; pavement looks smooth and traffic is light. The ego-vehicle travels in the left lane. A white box truck directly ahead in the ego lane slows and constrains the ego car's pace. An oncoming silver car approaches in the right-side opposing lane and continues straight. Two pedestrians wait on the right sidewalk near the curb, remaining off the roadway. A large 40 speed marking is visible on the pavement.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, in front of the ego car, because there is traffic congestion. The slowing truck indicates reduced traffic flow ahead, so slowing down will help maintain a safe distance and avoid sudden braking under congestion."}
{"id": "train_05984", "split": "train", "clip_key": "2020-0228-102841_091806_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "091806"}, "frames": ["2020-0228-102841_091806_movie_t-3.jpg", "2020-0228-102841_091806_movie_t-2.jpg", "2020-0228-102841_091806_movie_t-1.jpg", "2020-0228-102841_091806_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one narrow lane per direction climbs uphill between buildings; the pavement is clean and traffic is light but slow. Immediately ahead in the ego lane, a white hatchback slows because a small white box truck farther ahead in the same lane reduces speed and sets the pace. The opposite lane shows no oncoming vehicles through the scene. Parked vehicles line the right side and a white van waits on a side street to the left without entering. Railings and narrow sidewalks border the roadway, and a few pedestrians remain on the right sidewalk.", "hazard_reasoning": "There is a gray sedan slowing in front of the ego car, in the ego lane, because of the truck slowing ahead on the road. You should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_05985", "split": "train", "clip_key": "2020-0204-150838_046368_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_046368_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_046368_movie_t-3_augB1.jpg", "2020-0204-150838_046368_movie_t-2_augB1.jpg", "2020-0204-150838_046368_movie_t-1_augB1.jpg", "2020-0204-150838_046368_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Be aware of slowing truck ahead", "environment_perception": "An urban multi-lane arterial runs between tall buildings; the dark, worn pavement carries slow, heavy traffic. Ahead in the left lane, a large box truck slows in front of the ego-car as queues build, effectively setting the pace. Slightly to the right ahead, a silver hatchback moves into the right-turn lane and brakes beside the ego lane. On the far left near the curb, a light blue minivan creeps forward just ahead in the adjacent lane. Overhead gantry signs show straight arrows for the middle lanes and a right-turn arrow for the rightmost lane, and a few cones line the right curb by a fenced green strip.", "hazard_reasoning": "There is a large gray truck slowing in the left lane ahead of the ego-car, because of traffic congestion ahead. The truck's reduced speed could lead to sudden braking if unanticipated, so the driver should be aware of the slowing truck ahead and adjust speed accordingly."}
{"id": "train_05986", "split": "train", "clip_key": "2020-0206-101736_056357_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "056357"}, "frames": ["2020-0206-101736_056357_movie_t-3.jpg", "2020-0206-101736_056357_movie_t-2.jpg", "2020-0206-101736_056357_movie_t-1.jpg", "2020-0206-101736_056357_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane arterial with a right-side guardrail and smooth pavement carries slow, queuing same-direction traffic while a parallel roadway runs to the right. A white minivan directly ahead in the ego lane slows and inches forward because of congestion ahead, effectively setting the ego vehicle's pace. A large flatbed truck is alongside on the left lane, moving slowly and close enough to limit any merge to that side. Farther ahead, a line of vans and cars in both lanes brakes intermittently, keeping the flow heavy and stop-and-go. No salient signals are visible, and there are no pedestrians or cyclists in view.", "hazard_reasoning": "There is a white minivan slowing down in the ego lane because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a potential collision due to the minivan's deceleration."}
{"id": "train_05987", "split": "train", "clip_key": "2020-0205-103411_023523_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "023523"}, "frames": ["2020-0205-103411_023523_movie_t-3.jpg", "2020-0205-103411_023523_movie_t-2.jpg", "2020-0205-103411_023523_movie_t-1.jpg", "2020-0205-103411_023523_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction runs between tall buildings, separated from oncoming lanes by a railed median; the pavement looks smooth and traffic is moderate. Ahead in the left lane, a white hatchback continues straight at a steady pace. To the right near a triangular painted island, a black sedan noses out from a driveway and pauses, positioned to merge into the right lane next to the ego lane. Farther ahead, several cars proceed in both same-direction lanes, while oncoming traffic beyond the barrier flows smoothly. A yellow sign beside the island indicates entry is prohibited at that exit, and parked cars line the left curb.", "hazard_reasoning": "No caption provided. The road has no immediate hazards, so the driver can maintain moderate speed while remaining alert for any unexpected changes."}
{"id": "train_05988", "split": "train", "clip_key": "titan_clip_186_000390_movie", "source": {"subset": "titan", "scenario": "clip_186", "frame": "000390"}, "frames": ["titan_clip_186_000390_movie_t-3.jpg", "titan_clip_186_000390_movie_t-2.jpg", "titan_clip_186_000390_movie_t-1.jpg", "titan_clip_186_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with one lane each direction, no median, and smooth asphalt shows light traffic as the ego car proceeds in the left lane. A dark car ahead in the same lane continues straight at low speed, setting the pace. On the right edge of the road two pedestrians walk away from the camera; the one in a white shirt carries a bag and keeps left of another pedestrian beside him, so they partly occupy the curbside lane and may edge toward the ego path. A silver hatchback stands nose-out from a building entrance on the right, waiting to merge into traffic. Another person on the right sidewalk looks at a phone next to the parked car.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and walking on the right side of the road, away from the ego-car, because of another pedestrian on their right. The driver should slow down to safely respond to this pedestrian's unpredictable movement near the road edge."}
{"id": "train_05989", "split": "train", "clip_key": "titan_clip_321_000102_movie", "source": {"subset": "titan", "scenario": "clip_321", "frame": "000102"}, "frames": ["titan_clip_321_000102_movie_t-3.jpg", "titan_clip_321_000102_movie_t-2.jpg", "titan_clip_321_000102_movie_t-1.jpg", "titan_clip_321_000102_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial street with a narrow single shared lane and brick-pattern pavement runs between close storefronts; there is no divider and traffic is light with no moving vehicles ahead. A pedestrian carrying a handbag walks away along the right edge ahead of the ego vehicle, staying near the curb and potentially constraining the approach on the narrow lane. Farther ahead, another person is near the center of the roadway and moves away in the same direction, remaining in the potential path. Traffic cones and short bollards line the left side, slightly narrowing usable space, and no signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking on the right side of the road, away from the ego car. The driver should manoeuvre carefully to avoid coming too close to the pedestrian and prevent a collision while passing."}
{"id": "train_05990", "split": "train", "clip_key": "2020-0127-132751_104428_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0127-132751_104428_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0127-132751_104428_movie_t-3_augB1.jpg", "2020-0127-132751_104428_movie_t-2_augB1.jpg", "2020-0127-132751_104428_movie_t-1_augB1.jpg", "2020-0127-132751_104428_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-lane two-way street with shopfronts and narrow sidewalks; pavement looks dry and intact, and traffic moves slowly. A silver van directly ahead in the left lane is stopped with brake lights lit, constraining the ego car. A short pedestrian carrying a handbag steps from the right edge into the lane ahead and walks left across in front of the ego vehicle, prompting the halt. An oncoming black car travels in the opposite lane to the right and continues past without interacting. Utility poles and storefront signs line the road, and a solid yellow center line divides directions.", "hazard_reasoning": "There is a short pedestrian carrying a handbag crossing to the left side of the road, in front of the ego car. You must stop to avoid a collision with the pedestrian who is entering your path."}
{"id": "train_05991", "split": "train", "clip_key": "titan_clip_1286_000594_movie", "source": {"subset": "titan", "scenario": "clip_1286", "frame": "000594"}, "frames": ["titan_clip_1286_000594_movie_t-3.jpg", "titan_clip_1286_000594_movie_t-2.jpg", "titan_clip_1286_000594_movie_t-1.jpg", "titan_clip_1286_000594_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Yield to avoid collision with obstructing truck", "environment_perception": "A narrow urban two-way street with buildings close to the curb has no median and smooth pavement, and traffic is light as the ego vehicle proceeds in the left lane. A delivery truck is stopped along the left edge in the ego lane near the camera while two workers unload boxes beside it, narrowing the path and constraining the ego vehicle's pace. Farther ahead in the same direction, a white box truck continues away along the lane, serving as the lead vehicle. At the right-side intersection, a white minivan waits nose-out on a side street to merge into the roadway, yielding to through traffic. Orange cones line the curb near the minivan.", "hazard_reasoning": "There is a white truck parking on the right side of the road, in the ego lane. Because the truck obstructs your travel path, you should yield to avoid collision with it."}
{"id": "train_05992", "split": "train", "clip_key": "2020-0129-144857_007350_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "007350"}, "frames": ["2020-0129-144857_007350_movie_t-3.jpg", "2020-0129-144857_007350_movie_t-2.jpg", "2020-0129-144857_007350_movie_t-1.jpg", "2020-0129-144857_007350_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane each direction, no median, smooth pavement, and heavy slow traffic approaches a signalized intersection. Directly ahead in the ego lane, a silver hatchback is stopped because of congestion ahead, holding the ego car. In the opposite lane to the right, oncoming vehicles, including a boxy van near the curb, move slowly past without encroaching. The traffic light ahead shows red, reinforcing the queue.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The sudden stoppage of the lead vehicle due to congestion requires the driver to stop to maintain a safe following distance."}
{"id": "train_05993", "split": "train", "clip_key": "2020-0228-102841_091120_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "091120"}, "frames": ["2020-0228-102841_091120_movie_t-3.jpg", "2020-0228-102841_091120_movie_t-2.jpg", "2020-0228-102841_091120_movie_t-1.jpg", "2020-0228-102841_091120_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban two-way street with one narrow lane per direction runs between mid-rise buildings, divided by a solid yellow centerline; pavement is smooth and traffic is heavy with a short queue. A white sedan immediately ahead in the ego lane is stopped because of congestion, keeping the ego vehicle halted. Farther ahead in the same direction, a white van remains slow or stopped, reinforcing the queue. In the oncoming lane, a box truck followed by a van approaches at low speed and passes by, occupying the opposite lane and leaving no room to maneuver. A pedestrian on the left sidewalk walks along the curb and stays out of the roadway.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead on the road. The driver should stop to avoid colliding with the halted vehicle in congestion."}
{"id": "train_05994", "split": "train", "clip_key": "2020-0228-102841_036646_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "036646"}, "frames": ["2020-0228-102841_036646_movie_t-3.jpg", "2020-0228-102841_036646_movie_t-2.jpg", "2020-0228-102841_036646_movie_t-1.jpg", "2020-0228-102841_036646_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction and a curbed left shoulder has dry pavement and heavy traffic queued at a signal. A black hatchback directly ahead in the ego lane is stopped because the traffic light ahead shows red, holding the ego vehicle. Farther ahead in the same lane, a white van waits in the queue, contributing to the standstill. In the adjacent right lane, a white SUV is also stationary alongside, matching the line of cars. An overhead sign shows 50, and the red signal remains visible down the road.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. Drivers must stop to prevent rear-ending this halted vehicle at the intersection."}
{"id": "train_05995", "split": "train", "clip_key": "titan_clip_827_000018_movie", "source": {"subset": "titan", "scenario": "clip_827", "frame": "000018"}, "frames": ["titan_clip_827_000018_movie_t-3.jpg", "titan_clip_827_000018_movie_t-2.jpg", "titan_clip_827_000018_movie_t-1.jpg", "titan_clip_827_000018_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrians", "environment_perception": "An urban two-way street with a single narrow lane each direction runs between tall buildings; there is no median, the asphalt is smooth, and motor traffic is absent. On the right side ahead, two pedestrians wearing white T-shirts and brown pants walk toward the ego along the curb in the oncoming lane, partly in the roadway and shaping the space ahead. On the left near mid-frame, a pedestrian walks away along the sidewalk, remaining separate from the lane. Farther ahead on the right by a stairway, another person stands at the edge of the sidewalk looking at a phone. A parking sign with a left arrow is visible on the left.", "hazard_reasoning": "There are two pedestrians wearing white t-shirts and brown pants, walking on the right side of the road, towards the ego car. The pedestrians could step into the vehicle's path, so the driver should manoeuvre around them to avoid a collision."}
{"id": "train_05996", "split": "train", "clip_key": "2020-0207-151349_044553_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "044553"}, "frames": ["2020-0207-151349_044553_movie_t-3.jpg", "2020-0207-151349_044553_movie_t-2.jpg", "2020-0207-151349_044553_movie_t-1.jpg", "2020-0207-151349_044553_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with dry, well-marked pavement, posts dividing a left lane, and a solid yellow line between lanes; same-direction traffic is heavy and slow. Directly ahead in the ego lane, a white sedan is stopped and holds the ego vehicle because the signal ahead is red. To the right, a large silver box truck in the adjacent lane remains stopped alongside, keeping close and limiting room. On the left, a black minivan and several cars queue within the bollard-separated lane, inching forward. Farther ahead, more vehicles are lined up under the structure, reinforcing the stop-and-go flow.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver needs to stop to avoid rear-ending the halted vehicle and comply with the red signal."}
{"id": "train_05997", "split": "train", "clip_key": "2020-0129-105040_050269_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "050269"}, "frames": ["2020-0129-105040_050269_movie_t-3.jpg", "2020-0129-105040_050269_movie_t-2.jpg", "2020-0129-105040_050269_movie_t-1.jpg", "2020-0129-105040_050269_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban road runs beneath an elevated expressway, providing three same-direction lanes with a curb on the left and guardrails on the right; the asphalt is smooth and dry as the road bends slightly right. Traffic is very light, with no vehicles ahead in the ego lane or in adjacent lanes and no oncoming traffic visible. No pedestrians or cyclists appear along the roadside. No salient traffic signals or posted speed limits are visible, and there are no obstacles, parked vehicles, or work zones in the lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_05998", "split": "train", "clip_key": "2020-0220-102630_121916_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "121916"}, "frames": ["2020-0220-102630_121916_movie_t-3.jpg", "2020-0220-102630_121916_movie_t-2.jpg", "2020-0220-102630_121916_movie_t-1.jpg", "2020-0220-102630_121916_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane in each direction and a solid yellow center line has dry, slightly worn pavement and slow, congested flow in the left-side lane. A black hatchback is stopped directly ahead in the ego lane due to congestion, holding the ego vehicle. An oncoming black sedan travels toward the camera in the right lane, keeping its line and limiting any chance to pass the queue. Farther ahead in the opposing lane, a dark SUV also approaches steadily. Sidewalks with buildings and utility poles line both sides, and no unusual signs, work zones, or obstacles are visible.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car in the ego lane, because of traffic congestion. The sudden halt requires the driver to stop promptly to avoid a collision."}
{"id": "train_05999", "split": "train", "clip_key": "titan_clip_1124_000432_movie", "source": {"subset": "titan", "scenario": "clip_1124", "frame": "000432"}, "frames": ["titan_clip_1124_000432_movie_t-3.jpg", "titan_clip_1124_000432_movie_t-2.jpg", "titan_clip_1124_000432_movie_t-1.jpg", "titan_clip_1124_000432_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the delivery truck", "environment_perception": "An urban two-way street with narrow lanes, no median, and dry, slightly worn pavement runs through low-rise buildings; traffic remains light as the road curves gently ahead. A red delivery truck approaches ahead in the opposing lane near the centerline at low speed, shaping the ego car's pace. A black sedan on the right edges out from a parking area toward the opposing lane, appearing ready to merge in front of the truck. A pedestrian in a gray shirt walks away from the camera along the right roadside, keeping close to the curb. No traffic signals are visible, and several parked vehicles line the right side, narrowing the usable roadway.", "hazard_reasoning": "There is a gray shirt walking on the right side of the road, away from the ego car. The parked truck forces the pedestrian closer to your lane, so carefully manoeuvre around the delivery truck to avoid a potential collision."}
{"id": "train_06000", "split": "train", "clip_key": "titan_clip_1247_000264_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1247_000264_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1247_000264_movie_t-3_augB1.jpg", "titan_clip_1247_000264_movie_t-2_augB1.jpg", "titan_clip_1247_000264_movie_t-1_augB1.jpg", "titan_clip_1247_000264_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban side street with a single narrow marked lane runs between shopfronts; the pavement is dry and mostly smooth, and traffic is light with no moving vehicles seen. Ahead on the right, a black motorbike and several bicycles are parked partly in the ego lane, partially obstructing the path and narrowing the usable lane. Farther along the right edge more bicycles remain lined up but stationary, keeping close to the curb. A circular no-parking sign stands on a pole to the left, and storefront ramps and signboards sit near the curbs but do not project into the lane.", "hazard_reasoning": "There is a black motorbike, and several bicycles, parked on the right hand side of the road, in the ego-lane, partially obstructing the ego-lane. These parked vehicles partially obstruct your lane, requiring you to adjust your path to avoid collision."}
{"id": "train_06001", "split": "train", "clip_key": "2020-0207-101955_027560_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_027560_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_027560_movie_t-3_augB1.jpg", "2020-0207-101955_027560_movie_t-2_augB1.jpg", "2020-0207-101955_027560_movie_t-1_augB1.jpg", "2020-0207-101955_027560_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A busy urban two-way street with two lanes in the ego direction is separated from oncoming traffic by double white lines; the pavement is dry and smooth, and traffic is moderate but bunching ahead. A green covered truck directly ahead in the ego lane slows because congestion builds in front, setting the ego car's pace. A scooter slightly ahead near the left curb proceeds cautiously in the same direction and may edge into the ego lane. In the oncoming lanes to the right, a silver sedan followed by a white van approaches steadily, staying within their side and posing no immediate conflict.", "hazard_reasoning": "There is a green truck slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance due to the reduced speed of the truck and congestion ahead."}
{"id": "train_06002", "split": "train", "clip_key": "2020-0226-140503_025784_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "025784"}, "frames": ["2020-0226-140503_025784_movie_t-3.jpg", "2020-0226-140503_025784_movie_t-2.jpg", "2020-0226-140503_025784_movie_t-1.jpg", "2020-0226-140503_025784_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with one lane each way, no physical median, and smooth pavement carries moderate traffic. A black sedan ahead in the ego lane slows because of congestion forming farther ahead, constraining the ego car's pace. A cyclist rides along the left edge ahead in the same direction near the curb, passing a parked van that narrows space in the ego lane. Oncoming traffic, including a city bus and a scooter, approaches steadily in the opposite lane and remains separated by the center line.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance in congested traffic."}
{"id": "train_06003", "split": "train", "clip_key": "2020-0129-105040_048145_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "048145"}, "frames": ["2020-0129-105040_048145_movie_t-3.jpg", "2020-0129-105040_048145_movie_t-2.jpg", "2020-0129-105040_048145_movie_t-1.jpg", "2020-0129-105040_048145_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes runs straight beneath an elevated expressway, with a guardrail separating a parallel roadway on the right; the pavement is dry and smooth and traffic is light throughout. Ahead to the left, a white box truck travels steadily and keeps its lane with a comfortable gap. Farther ahead near the center, a small white car proceeds straight in lane and becomes the primary vehicle ahead of the ego. A few more same-direction cars are visible under the viaduct at a distance and flow smoothly without affecting the ego. Blue directional signs hang over the roadway.", "hazard_reasoning": "No hazards detected; the roadway is unobstructed and traffic conditions are clear, so no immediate action is required."}
{"id": "train_06004", "split": "train", "clip_key": "2020-0207-151349_007787_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "007787"}, "frames": ["2020-0207-151349_007787_movie_t-3.jpg", "2020-0207-151349_007787_movie_t-2.jpg", "2020-0207-151349_007787_movie_t-1.jpg", "2020-0207-151349_007787_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrian crossing", "environment_perception": "An urban two-way street with one narrow lane per direction and no median unfolds ahead, the pavement smooth and traffic light as the car approaches a zebra crosswalk. A tall pedestrian wearing a black jacket and a backpack crosses the crosswalk from right to left directly in front of the ego-vehicle, so the car yields. An oncoming small truck approaches in the opposite lane ahead and slows near the crosswalk, remaining in its lane and posing no immediate obstruction. Another pedestrian waits on the right sidewalk at the curb by the crosswalk and could step out after the crosser. Traffic cones and a short work zone line the right curb ahead, slightly narrowing the shoulder.", "hazard_reasoning": "There's a tall person wearing a black jacket and carrying a backpack, crossing the road in a crosswalk in front of the ego-car, from the right side to the left side of the street. The driver should stop because the pedestrian is already on the crosswalk and may enter the vehicle's path, risking a collision if the vehicle proceeds."}
{"id": "train_06005", "split": "train", "clip_key": "titan_clip_715_000060_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_715_000060_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_715_000060_movie_t-3_augB1.jpg", "titan_clip_715_000060_movie_t-2_augB1.jpg", "titan_clip_715_000060_movie_t-1_augB1.jpg", "titan_clip_715_000060_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with no marked lanes or median, bordered by shops, has intact asphalt and very light vehicular traffic but heavy pedestrian activity as the ego car approaches an unsignalized intersection. A small group of pedestrians ahead in the middle of the road walks toward the ego vehicle and constrains its pace; among them, a pedestrian in a brown shirt is centered and moving directly toward the car. Another pedestrian steps in from the left edge and continues across the ego path. Farther ahead, more pedestrians walk along and across near the right-side storefronts, some drifting outward into the lane. A convex safety mirror and a line of roadside cones are visible at the corner.", "hazard_reasoning": "There is a pedestrian wearing a brown shirt, walking in the middle of the road, towards the ego car. The driver should slow down because a person is directly ahead and may continue crossing into the vehicle's path."}
{"id": "train_06006", "split": "train", "clip_key": "titan_clip_1263_000276_movie", "source": {"subset": "titan", "scenario": "clip_1263", "frame": "000276"}, "frames": ["titan_clip_1263_000276_movie_t-3.jpg", "titan_clip_1263_000276_movie_t-2.jpg", "titan_clip_1263_000276_movie_t-1.jpg", "titan_clip_1263_000276_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential scene shows a very narrow two-way street with no centerline and smooth pavement; traffic is light with no moving vehicles. No vehicle travels ahead in the ego lane and no oncoming traffic appears, and there are no pedestrians visible along the curbs. A small roadside warning sign on the left and a white diamond marking are present, and a reddish strip across the lane at the foreground functions as a speed hump. Buildings and utility poles closely flank the roadway, leaving minimal shoulder.", "hazard_reasoning": "No immediate hazards detected; driving conditions are clear and unobstructed."}
{"id": "train_06007", "split": "train", "clip_key": "2020-0205-152530_048790_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "048790"}, "frames": ["2020-0205-152530_048790_movie_t-3.jpg", "2020-0205-152530_048790_movie_t-2.jpg", "2020-0205-152530_048790_movie_t-1.jpg", "2020-0205-152530_048790_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with red pavement and a planted median is dry and smooth, and traffic flows moderately toward a signalized intersection. A small white box truck directly ahead in the ego lane accelerates through the junction under a green light, briefly setting the ego car's pace. A black hatchback slightly ahead to the right moves forward in the adjacent lane in parallel, remaining clear of the ego path. Farther left near the curb, a dark van proceeds ahead in its lane without interacting. On the opposite side of the median, several cars travel as oncoming traffic. The overhead signal facing the ego direction shows green.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06008", "split": "train", "clip_key": "titan_clip_155_000354_movie", "source": {"subset": "titan", "scenario": "clip_155", "frame": "000354"}, "frames": ["titan_clip_155_000354_movie_t-3.jpg", "titan_clip_155_000354_movie_t-2.jpg", "titan_clip_155_000354_movie_t-1.jpg", "titan_clip_155_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one narrow lane each direction runs between storefronts beneath an elevated structure, the pavement worn but clear, and traffic light. The ego vehicle proceeds in the left lane with no oncoming cars, while a small white van ahead in the same direction moves slowly toward the next block and governs the pace. On the right near the shops, a pedestrian walks partly in the roadway toward the camera and may enter the ego lane. On the left side, a pedestrian wearing a black T-shirt and black pants walks away from the ego car along the curb.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and black pants, walking at the left side of the road, away from the ego car. The pedestrian is close to the vehicle's path, so the driver should carefully manoeuvre around them to prevent a collision."}
{"id": "train_06009", "split": "train", "clip_key": "2020-0205-103411_054623_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "054623"}, "frames": ["2020-0205-103411_054623_movie_t-3.jpg", "2020-0205-103411_054623_movie_t-2.jpg", "2020-0205-103411_054623_movie_t-1.jpg", "2020-0205-103411_054623_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes approaches a signalized intersection, the rightmost marked for right turns, with smooth pavement and a short queue; a curb and guardrail line the right edge. A black vehicle is stopped directly ahead in the ego lane at a red light, keeping the ego car stationary. In the left adjacent lane, a dark wagon is halted alongside, remaining parallel without encroaching into the ego path. Across the junction, cross-traffic passes left-to-right on the intersecting street and stays outside the ego lane. The overhead signal ahead shows red for the ego direction.", "hazard_reasoning": "There is a black mid-suv stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid a collision with the halted vehicle at the red light."}
{"id": "train_06010", "split": "train", "clip_key": "2020-0203-114632_091434_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "091434"}, "frames": ["2020-0203-114632_091434_movie_t-3.jpg", "2020-0203-114632_091434_movie_t-2.jpg", "2020-0203-114632_091434_movie_t-1.jpg", "2020-0203-114632_091434_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated roadway with smooth pavement; traffic is moderate and begins to roll from a stop at a signal. A white minivan directly ahead in the ego lane starts to move as the light is green, setting the ego car's pace. A large box truck in the adjacent right lane continues slowly alongside, close to the lane line and partly blocking the forward view. Farther ahead to the left, a blue work truck moves ahead in its lane at low speed without merging. The signal ahead shows green.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06011", "split": "train", "clip_key": "2020-0131-135401_063165_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "063165"}, "frames": ["2020-0131-135401_063165_movie_t-3.jpg", "2020-0131-135401_063165_movie_t-2.jpg", "2020-0131-135401_063165_movie_t-1.jpg", "2020-0131-135401_063165_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction approaches an intersection; a post-lined median separates oncoming traffic, the pavement is smooth, and traffic is moderate. A white van drives ahead in the ego lane, moving away from the ego car and continuing straight. A large dump truck slightly ahead in the right adjacent lane proceeds toward the intersection and slows near the crosswalk, constraining the ego vehicle's pace. Two pedestrians on the left sidewalk walk along the guardrail near the crossing but stay clear of the lane. An overhead traffic signal facing the ego direction appears unlit.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06012", "split": "train", "clip_key": "2020-0129-144857_029582_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "029582"}, "frames": ["2020-0129-144857_029582_movie_t-3.jpg", "2020-0129-144857_029582_movie_t-2.jpg", "2020-0129-144857_029582_movie_t-1.jpg", "2020-0129-144857_029582_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multi-lane arterial runs under an elevated roadway, with two same-direction lanes and a bollard-separated strip on the right; the pavement looks wet and traffic is queued. A black van directly ahead in the ego lane is stopped at a red light, holding the ego vehicle. To the left, a white box truck slightly ahead is also stopped in its lane, forming a parallel line that prevents an easy pass. Farther ahead, more cars wait beyond the van. Overhead signals show red, and the flexible posts along the right edge constrain any merge or lane change.", "hazard_reasoning": "There is a black van stopped in front of the ego car in the ego lane, because the light is red. The driver must stop to avoid colliding with the stationary van at the red light."}
{"id": "train_06013", "split": "train", "clip_key": "titan_clip_337_000426_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_337_000426_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_337_000426_movie_t-3_augB1.jpg", "titan_clip_337_000426_movie_t-2_augB1.jpg", "titan_clip_337_000426_movie_t-1_augB1.jpg", "titan_clip_337_000426_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrians in the road", "environment_perception": "A narrow urban commercial street with interlocking pavers has no centerline and functions as a single mixed-traffic lane; overall flow is light and slow. Two pedestrians ahead in the middle of the roadway, one in a white shirt with black pants pushing a suitcase and the other in a cap and gray T-shirt, walk toward the ego car and occupy its path, constraining progress. Farther ahead in the same lane, a small white truck moves away at low speed, loosely pacing traffic. A white van is parked along the left edge near the ego vehicle, narrowing the usable lane.", "hazard_reasoning": "There are two pedestrians, one wearing a white shirt, black pants, and pushing a suitcase, the other wearing a cap and a gray t-shirt, walking in the middle of the road toward the ego car. They occupy the travel lane and may unexpectedly cross paths with the vehicle, so the driver should yield to avoid a collision."}
{"id": "train_06014", "split": "train", "clip_key": "2020-0220-102630_074412_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "074412"}, "frames": ["2020-0220-102630_074412_movie_t-3.jpg", "2020-0220-102630_074412_movie_t-2.jpg", "2020-0220-102630_074412_movie_t-1.jpg", "2020-0220-102630_074412_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated two-way road with one lane in each direction runs between concrete barriers and under an overpass; the pavement appears smooth and traffic is light. Ahead in the ego lane, a white van drives away at a steady pace because the road ahead is clear. In the opposite lane to the right, a dark car approaches from ahead at moderate speed, separated by the yellow center line and not affecting the ego path. A white vehicle on a lower side ramp to the left travels parallel behind the barrier, remaining isolated from the main roadway.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car, because the road ahead is clear. The driver should follow the vehicle ahead to maintain safe distance and be prepared for any sudden braking."}
{"id": "train_06015", "split": "train", "clip_key": "titan_clip_854_000594_movie", "source": {"subset": "titan", "scenario": "clip_854", "frame": "000594"}, "frames": ["titan_clip_854_000594_movie_t-3.jpg", "titan_clip_854_000594_movie_t-2.jpg", "titan_clip_854_000594_movie_t-1.jpg", "titan_clip_854_000594_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "An urban commercial street with two same-direction lanes and no median appears dry and well marked, and traffic is moderate with a slow-moving queue. A box truck directly ahead in the ego lane slows and stops intermittently, setting the pace. A white van in the right lane runs slightly ahead alongside the ego vehicle and continues forward, close enough to merge later. A cyclist on the far left near the curb rides straight in the same direction beside the guardrail, remaining near the lane edge. At the next pedestrian crossing, a pedestrian wearing gray crosses from left to right in front of the truck and through the ego lane. Blue overhead direction signs are visible above the roadway.", "hazard_reasoning": "There is a pedestrian wearing gray clothing, crossing the street at the pedestrian crossing. The pedestrian is entering the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_06016", "split": "train", "clip_key": "2020-0225-145150_043501_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "043501"}, "frames": ["2020-0225-145150_043501_movie_t-3.jpg", "2020-0225-145150_043501_movie_t-2.jpg", "2020-0225-145150_043501_movie_t-1.jpg", "2020-0225-145150_043501_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes and no median is shown, the asphalt appears smooth and traffic is heavy and stop-and-go. Directly ahead in the ego lane, a blue covered mini-truck is stopped because of congestion, blocking the ego car's path. Farther ahead in the same lane, a white box truck is also queued and creeping, reinforcing the slowdown and setting the pace. In the left adjacent lane, a black taxi slightly behind the blue truck inches forward parallel to the queue and may slip ahead of the ego vehicle.", "hazard_reasoning": "There is a blue auto-rickshaw stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The blue auto-rickshaw is stopped due to congestion, so the driver should stop immediately to maintain safe distance."}
{"id": "train_06017", "split": "train", "clip_key": "2020-0129-105040_092618_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "092618"}, "frames": ["2020-0129-105040_092618_movie_t-3.jpg", "2020-0129-105040_092618_movie_t-2.jpg", "2020-0129-105040_092618_movie_t-1.jpg", "2020-0129-105040_092618_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid rear-end collision", "environment_perception": "An urban divided road with two same-direction lanes runs toward a signalized intersection, separated from oncoming lanes by a landscaped median; the asphalt looks smooth and traffic is moderate and slowing. A small white truck directly ahead in the ego lane is stopped for a red light, constraining the ego car. In the adjacent left lane, a white sedan slightly ahead also waits at the light and will lead off when it turns green. A dark car lingers behind in that left lane without overtaking. Across the median, oncoming vehicles approach independently and do not interact with the ego path. Overhead traffic signals above the ego approach display red.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, because of a red traffic light. The driver needs to stop immediately to avoid a rear-end collision."}
{"id": "train_06018", "split": "train", "clip_key": "titan_clip_1321_000132_movie", "source": {"subset": "titan", "scenario": "clip_1321", "frame": "000132"}, "frames": ["titan_clip_1321_000132_movie_t-3.jpg", "titan_clip_1321_000132_movie_t-2.jpg", "titan_clip_1321_000132_movie_t-1.jpg", "titan_clip_1321_000132_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow two-way urban street runs between close buildings with smooth pavement and light traffic. A large 30 speed marking is painted on the road. Far ahead in the same direction, a small bus-like vehicle continues straight and pulls away. On the right roadside near the ego, a gray van is parked for unloading, taking up curb space and slightly narrowing the oncoming side. Along the left sidewalk, several pedestrians walk parallel to the road, staying on the footpath. No oncoming vehicles are present.", "hazard_reasoning": "There is a gray van parked on the right side of the road, because it is being unloaded. The unloading activity may involve workers or cargo entering the roadway, so the driver should carefully manoeuvre around the van."}
{"id": "train_06019", "split": "train", "clip_key": "2020-0228-102841_043118_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "043118"}, "frames": ["2020-0228-102841_043118_movie_t-3.jpg", "2020-0228-102841_043118_movie_t-2.jpg", "2020-0228-102841_043118_movie_t-1.jpg", "2020-0228-102841_043118_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between tree-lined fences, the pavement dry and smooth, and traffic light with steady flow. Opposite-direction vehicles move separately beyond the right-side barrier. A white van travels ahead in the ego lane, moving forward because the road ahead is clear and effectively leading the ego car's pace. In the adjacent right lane, a dark hatchback sits slightly ahead and continues straight at a similar speed without drifting toward the ego lane. Farther ahead in the right lane, a darker minivan proceeds steadily, maintaining distance. No traffic signals or unusual signs are visible, and there are no obstacles or work zones in the lane.", "hazard_reasoning": "There is a white van moving forward in the ego lane, in front of the ego car, because the road ahead is clear. The van may brake unexpectedly or conceal hazards ahead, so the driver should follow the vehicle ahead to maintain a clear and safe path."}
{"id": "train_06020", "split": "train", "clip_key": "titan_clip_307_000552_movie", "source": {"subset": "titan", "scenario": "clip_307", "frame": "000552"}, "frames": ["titan_clip_307_000552_movie_t-3.jpg", "titan_clip_307_000552_movie_t-2.jpg", "titan_clip_307_000552_movie_t-1.jpg", "titan_clip_307_000552_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "An urban two-way street with no lane markings and cobblestone-style pavement runs between mid-rise buildings, and traffic is light with no moving vehicles as the ego car approaches a small junction on the right. On the left edge a pedestrian wearing a white shirt, carrying a handbag, walks away from the ego car along the curb, staying outside the lane. Ahead in the center of the roadway a man in a plaid shirt walks away in the ego path and may constrain progress. At the right corner a woman with an umbrella crosses leftward at the mouth of the side street and could move toward the lane. A no-parking sign stands on the corner, and several bicycles are parked by the building.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and walking, on the left side of the road, away from the ego-car. The driver should yield because the pedestrian may step into the road unexpectedly."}
{"id": "train_06021", "split": "train", "clip_key": "titan_clip_810_000498_movie", "source": {"subset": "titan", "scenario": "clip_810", "frame": "000498"}, "frames": ["titan_clip_810_000498_movie_t-3.jpg", "titan_clip_810_000498_movie_t-2.jpg", "titan_clip_810_000498_movie_t-1.jpg", "titan_clip_810_000498_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A narrow urban residential two-way road with a single lane each direction and no divider runs ahead; pavement is smooth and traffic is light as the car proceeds through a slight chicane. A cyclist in a gray T-shirt approaches on the left side of the roadway toward the ego vehicle, riding along the curb because there is no bicycle lane, and becomes relevant in the constrained passage. A white van is parked along the right curb ahead, remaining stationary and further narrowing the available width.", "hazard_reasoning": "There is a cyclist wearing a gray t-shirt, cycling on the left side of the road, toward the ego car, because there is no bicycle lane. The driver should carefully manoeuvre around the cyclist to maintain a safe distance and avoid collision."}
{"id": "train_06022", "split": "train", "clip_key": "2020-0131-135401_044379_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "044379"}, "frames": ["2020-0131-135401_044379_movie_t-3.jpg", "2020-0131-135401_044379_movie_t-2.jpg", "2020-0131-135401_044379_movie_t-1.jpg", "2020-0131-135401_044379_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian waiting to cross", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid orange centerline, flanked by railings and close storefronts, appears dry and slightly worn. Traffic is light as the view approaches a signalized intersection and zebra crossing. A white car ahead in the ego lane continues straight at steady speed toward the crosswalk, constraining the ego vehicle's pace. An oncoming blue minivan passes by in the right lane near the camera, then clears without interacting. At the left side of the intersection, a pedestrian in a black shirt and black pants waits to cross and may step into the ego lane. The overhead traffic signal facing the ego direction shows green.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants, waiting to cross at the left side of the intersection. The pedestrian may step into the roadway unexpectedly, so the driver should be aware of their presence."}
{"id": "train_06023", "split": "train", "clip_key": "titan_clip_219_000738_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_219_000738_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_219_000738_movie_t-3_augB1.jpg", "titan_clip_219_000738_movie_t-2_augB1.jpg", "titan_clip_219_000738_movie_t-1_augB1.jpg", "titan_clip_219_000738_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow one-lane urban street between tall buildings has brick-like pavement, no median, and light same-direction traffic moving away ahead. In front of the ego car at a marked crosswalk, two children carrying backpacks walk away from the ego vehicle along the lane, occupying its path and setting the pace. Far ahead in the same lane, a small white van proceeds straight and gradually pulls away without affecting the ego vehicle. A bicycle is parked on the left sidewalk and does not intrude into the roadway.", "hazard_reasoning": "There are two children carrying backpacks and walking in front of the ego car, away from the ego car. The driver should slow down because children walking close to the vehicle may unexpectedly change direction or step into the lane."}
{"id": "train_06024", "split": "train", "clip_key": "2020-0227-104226_108133_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "108133"}, "frames": ["2020-0227-104226_108133_movie_t-3.jpg", "2020-0227-104226_108133_movie_t-2.jpg", "2020-0227-104226_108133_movie_t-1.jpg", "2020-0227-104226_108133_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes and clear painted dividers has smooth pavement, and traffic is heavy with queues and stop-and-go movement. A white box truck is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle at a standstill. To the right, a silver hatchback in the adjacent lane crawls forward beside the truck, preventing an immediate merge. Ahead-left, a small kei-truck is also stationary alongside the box truck within the queue, adding to the blockage. A pedestrian overpass and roadside buildings frame the scene in bright daylight.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion ahead. Stop to maintain a safe following distance and avoid a rear-end collision in heavy traffic."}
{"id": "train_06025", "split": "train", "clip_key": "2020-0131-135401_000594_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "000594"}, "frames": ["2020-0131-135401_000594_movie_t-3.jpg", "2020-0131-135401_000594_movie_t-2.jpg", "2020-0131-135401_000594_movie_t-1.jpg", "2020-0131-135401_000594_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single lane per direction runs between mid-rise buildings, divided by a yellow center line on smooth pavement, and traffic is moderate. Ahead in the ego lane, a white box truck slows because congestion forms farther up the road, constraining the ego vehicle's pace. To the right, an oncoming silver minivan and a small white car pass steadily in their lane. On the left sidewalk, a pedestrian near a parked black car walks along the curb while a few others remain by the building without stepping into the roadway.", "hazard_reasoning": "There is a white truck slowing in the ego lane because of traffic congestion ahead on the road. Slow down to maintain a safe following distance and avoid a collision due to the reduced speed of the vehicle ahead."}
{"id": "train_06026", "split": "train", "clip_key": "titan_clip_1357_000258_movie", "source": {"subset": "titan", "scenario": "clip_1357", "frame": "000258"}, "frames": ["titan_clip_1357_000258_movie_t-3.jpg", "titan_clip_1357_000258_movie_t-2.jpg", "titan_clip_1357_000258_movie_t-1.jpg", "titan_clip_1357_000258_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow lane curves right between rows of bollards and storefronts; the pavement is smooth and moving traffic is light with no vehicles ahead. A pedestrian in black pants and a blue shirt steps from the left curb and crosses to the right across the lane, momentarily occupying the ego path. On the left near a side street, a small delivery truck is stopped at the curb with its rear open, narrowing space at the junction. Beside the truck, a cyclist waits by the curb and edges forward as if preparing to enter the roadway.", "hazard_reasoning": "There is a pedestrian wearing black pant and blue shirt on the left side crossing the street to the right side. The driver should slow down to yield to the crossing pedestrian and avoid a potential collision."}
{"id": "train_06027", "split": "train", "clip_key": "titan_clip_305_001002_movie", "source": {"subset": "titan", "scenario": "clip_305", "frame": "001002"}, "frames": ["titan_clip_305_001002_movie_t-3.jpg", "titan_clip_305_001002_movie_t-2.jpg", "titan_clip_305_001002_movie_t-1.jpg", "titan_clip_305_001002_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial alley with a single narrow shared lane is paved with interlocking bricks, with no divider and very light vehicle traffic but steady foot traffic. A pedestrian in a purple dress with a backpack walks away from the ego vehicle along the left edge beside a line of safety cones, and may step into the lane. Another pedestrian farther ahead in the center of the lane also walks away in the same direction, occupying the path and constraining speed. A person on the right by a storefront stands near the curb, pausing close to the travel way. Safety cones narrow the left margin, and shopfronts and signs line both sides.", "hazard_reasoning": "There is a pedestrian wearing a purple dress, carrying a backpack, walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid collision."}
{"id": "train_06028", "split": "train", "clip_key": "titan_clip_988_000366_movie", "source": {"subset": "titan", "scenario": "clip_988", "frame": "000366"}, "frames": ["titan_clip_988_000366_movie_t-3.jpg", "titan_clip_988_000366_movie_t-2.jpg", "titan_clip_988_000366_movie_t-1.jpg", "titan_clip_988_000366_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of pedestrian crossing", "environment_perception": "An urban neighborhood is shown on a narrow two-way street with no median or centerline, smooth pavement, and light traffic. Ahead at the marked crosswalk, a pedestrian wearing black pants and a black shirt is in the middle of the road crossing left to right through the ego vehicle's path. Another pedestrian slightly farther right continues across in the same direction, also occupying the crosswalk. Farther ahead near the crosswalk, a white box truck remains stationary in the same direction, partly occluding the view of the intersection and narrowing the available space. Construction materials and cones sit on the right shoulder, but they do not extend into the lane.", "hazard_reasoning": "There is a pedestrian wearing black pants and a black shirt, in the middle of the road, crossing the street from the left to the right side. The driver should be cautious as the pedestrian may enter the vehicle's path unexpectedly."}
{"id": "train_06029", "split": "train", "clip_key": "titan_clip_59_000390_movie", "source": {"subset": "titan", "scenario": "clip_59", "frame": "000390"}, "frames": ["titan_clip_59_000390_movie_t-3.jpg", "titan_clip_59_000390_movie_t-2.jpg", "titan_clip_59_000390_movie_t-1.jpg", "titan_clip_59_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian ahead", "environment_perception": "A narrow urban two-way street lined with buildings has smooth pavement and light traffic as the ego car proceeds in the left lane without a median. A white delivery truck ahead in the same lane creeps or pauses near mid-block, constraining the ego vehicle's pace and partially blocking the view forward. On the right side, a pedestrian wearing black pants and a striped shirt and carrying a handbag walks toward the ego vehicle along the curb and may step into the lane. On the left edge very close, another pedestrian walks toward the camera beside the vegetation, keeping to the verge. No salient traffic signals or signs are visible.", "hazard_reasoning": "There is a pedestrian wearing black pants, a striped shirt, and carrying a handbag, walking on the right side of the road, toward the ego car. The pedestrian is approaching the vehicle's path and may enter the roadway unexpectedly, so the driver should be aware of their movement."}
{"id": "train_06030", "split": "train", "clip_key": "2020-0218-151547_018334_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "018334"}, "frames": ["2020-0218-151547_018334_movie_t-3.jpg", "2020-0218-151547_018334_movie_t-2.jpg", "2020-0218-151547_018334_movie_t-1.jpg", "2020-0218-151547_018334_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban divided arterial runs under elevated structures, the pavement dry and smooth, and traffic is heavy and queued at a signal in the same-direction lanes. A silver hatchback ahead in the ego lane is stopped because the traffic light shows red, holding the ego vehicle. To the left, a white kei car in the adjacent lane creeps and then waits near the intersection, roughly parallel to the ego. To the right, a red compact car slightly ahead in the right lane also waits in the queue. Overhead signal heads display red.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light. Stop to avoid a rear-end collision with the halted vehicle at the red signal."}
{"id": "train_06031", "split": "train", "clip_key": "titan_clip_574_000264_movie", "source": {"subset": "titan", "scenario": "clip_574", "frame": "000264"}, "frames": ["titan_clip_574_000264_movie_t-3.jpg", "titan_clip_574_000264_movie_t-2.jpg", "titan_clip_574_000264_movie_t-1.jpg", "titan_clip_574_000264_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane each way rises ahead, with no median and worn pavement; traffic is light. A large box truck is stopped ahead in the ego lane near the left curb, partially blocking the path. On the left sidewalk by the convenience store, a pedestrian in a light shirt carrying a bag stands beside a parked vehicle and faces toward the road, consistent with attending it. On the right sidewalk, another pedestrian in light clothing walks forward along the curb. Farther ahead in the oncoming lane, a small vehicle approaches downhill. A No Parking pole sign stands on the left.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, carrying a handbag, standing on the left side of the road, towards the ego car, because they are attending their parked vehicle. The driver should slow down to prevent colliding with the pedestrian if they move into the lane."}
{"id": "train_06032", "split": "train", "clip_key": "2020-0207-151349_088708_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "088708"}, "frames": ["2020-0207-151349_088708_movie_t-3.jpg", "2020-0207-151349_088708_movie_t-2.jpg", "2020-0207-151349_088708_movie_t-1.jpg", "2020-0207-151349_088708_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop.", "environment_perception": "An urban arterial with two-way traffic and a central railing runs straight through an intersection; the pavement is dry and traffic is light. Ahead at the stop line, a white motorcycle in the ego lane waits at the crosswalk for the light, holding the ego vehicle. To its left, another scooter is stopped alongside near the crosswalk without entering the ego path. Farther ahead beyond the junction, a few oncoming cars move along the opposite lanes. An overhead traffic signal governs the junction, and an elevated structure with guardrails lines the right side.", "hazard_reasoning": "There is a white motorcycle stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to maintain safe distance and avoid a collision with the stationary motorcycle at the red light."}
{"id": "train_06033", "split": "train", "clip_key": "titan_clip_1173_000198_movie", "source": {"subset": "titan", "scenario": "clip_1173", "frame": "000198"}, "frames": ["titan_clip_1173_000198_movie_t-3.jpg", "titan_clip_1173_000198_movie_t-2.jpg", "titan_clip_1173_000198_movie_t-1.jpg", "titan_clip_1173_000198_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "An urban back street with a single narrow lane runs between construction fences; the pavement is worn and the road curves slightly uphill ahead, with light traffic. A white work truck stands on the immediate right shoulder partly protruding into the lane, constraining the ego vehicle to the left. On the left near the fence, a pedestrian wearing black pants, a blue shirt, a cap, and a backpack walks toward the ego car along the edge and could step into the lane. Farther ahead on the right, another pedestrian walks away beside a line of cones, close to the travel path. Cones and barriers define a work zone and limit sight lines.", "hazard_reasoning": "There is a pedestrian wearing black pants, a blue shirt, a cap, and carrying a backpack, walking on the left side of the road, toward the ego car. The pedestrian is approaching the vehicle's path, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_06034", "split": "train", "clip_key": "2020-0203-154554_035861_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "035861"}, "frames": ["2020-0203-154554_035861_movie_t-3.jpg", "2020-0203-154554_035861_movie_t-2.jpg", "2020-0203-154554_035861_movie_t-1.jpg", "2020-0203-154554_035861_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs under an elevated expressway with two same-direction lanes, a right-side guardrail, and a left curb with shrubs; the pavement is dry and smooth, and overall flow is light to moderate with a brief slowdown ahead. A white bus ahead in the ego lane slows as traffic builds ahead, constraining the ego vehicle's pace. A flatbed truck stands stopped in the adjacent right lane near the guardrail with cargo on its bed, forming a roadside obstruction but remaining outside the ego lane.", "hazard_reasoning": "There is a white bus slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Slow down to maintain a safe following distance and prevent a rear-end collision due to the reduced speed of the bus."}
{"id": "train_06035", "split": "train", "clip_key": "2020-0204-150838_049886_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "049886"}, "frames": ["2020-0204-150838_049886_movie_t-3.jpg", "2020-0204-150838_049886_movie_t-2.jpg", "2020-0204-150838_049886_movie_t-1.jpg", "2020-0204-150838_049886_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of slowing truck ahead.", "environment_perception": "An urban elevated roadway with three same-direction lanes curves gently right, bounded by guardrails and an overhead viaduct, with smooth pavement and light traffic flow. A white box truck ahead in the ego lane slows, briefly constraining the ego vehicle's pace, consistent with the note that a white truck is slowing in front. Farther ahead, a small car in the adjacent middle lane continues at steady speed without changing lanes. No oncoming traffic is visible on this divided bridge segment, and no traffic signals or unusual signage appear.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. This slowing could require sudden deceleration to maintain a safe following distance, so the driver should be aware of the truck ahead."}
{"id": "train_06036", "split": "train", "clip_key": "titan_clip_875_000378_movie", "source": {"subset": "titan", "scenario": "clip_875", "frame": "000378"}, "frames": ["titan_clip_875_000378_movie_t-3.jpg", "titan_clip_875_000378_movie_t-2.jpg", "titan_clip_875_000378_movie_t-1.jpg", "titan_clip_875_000378_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrians crossing ahead", "environment_perception": "A narrow urban two-way street with no median and smooth pavement runs between buildings and trees, and traffic is light with no oncoming vehicles. Ahead at a marked crosswalk, a group of pedestrians crosses from left to right through the ego lane, doing so because the left sidewalk is obstructed by cones and taped barriers. Another pedestrian on the right steps onto the crosswalk to follow them, keeping the ego vehicle paused. A white van is parked on the left near the crosswalk at the curb, partly screening the approach. Orange cones line the left edge, indicating a sidewalk work zone.", "hazard_reasoning": "There are pedestrians walking in groups and crossing to the right side at a crosswalk in front of the ego-car because of the obstacles on the left sidewalk. The driver should stop because the pedestrians are crossing ahead and may enter the vehicle's path."}
{"id": "train_06037", "split": "train", "clip_key": "titan_clip_1239_000108_movie", "source": {"subset": "titan", "scenario": "clip_1239", "frame": "000108"}, "frames": ["titan_clip_1239_000108_movie_t-3.jpg", "titan_clip_1239_000108_movie_t-2.jpg", "titan_clip_1239_000108_movie_t-1.jpg", "titan_clip_1239_000108_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban residential road without a centerline climbs gently and curves left, the pavement smooth and dry, with light traffic and no moving vehicles nearby. Ahead on the right, a white van sits stationary at the entrance of a pay parking lot near the curb and could merge into the ego lane as the car draws level. No oncoming traffic appears in the opposing half of the road. Large parking signs are visible but no signals or posted speed signs are seen. The roadway squeezes at a short pinch point marked by plastic bollards and temporary fencing on the right, but the lane remains clear.", "hazard_reasoning": "No immediate hazards detected; the roadway is clear and visibility is good."}
{"id": "train_06038", "split": "train", "clip_key": "2020-0205-103411_096166_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "096166"}, "frames": ["2020-0205-103411_096166_movie_t-3.jpg", "2020-0205-103411_096166_movie_t-2.jpg", "2020-0205-103411_096166_movie_t-1.jpg", "2020-0205-103411_096166_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop before the stopped truck.", "environment_perception": "An urban multi-lane road with smooth pavement appears under bright sun, and same-direction traffic is queued near a signalized intersection. Directly ahead in the ego lane, a white mini-truck carrying a ladder is stopped because the traffic light up ahead shows red. To the left of the ego vehicle, several passenger cars are also halted in the adjacent lane, forming a short queue that constrains pace. Additional vehicles line the neighboring lane to the right at a standstill. The overhead signal ahead clearly displays red.", "hazard_reasoning": "There is a white truck stopped in the ego lane because of the red traffic light up ahead. The driver should stop now to avoid colliding with the stationary truck and comply with the red signal."}
{"id": "train_06039", "split": "train", "clip_key": "2020-0206-101736_045362_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "045362"}, "frames": ["2020-0206-101736_045362_movie_t-3.jpg", "2020-0206-101736_045362_movie_t-2.jpg", "2020-0206-101736_045362_movie_t-1.jpg", "2020-0206-101736_045362_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs under a pedestrian overpass; oncoming lanes on the right are separated by orange posts, and the dry pavement looks smooth. Traffic in the ego direction flows steadily while the opposing side is congested. A white van ahead in the ego lane proceeds straight at a steady pace, setting the ego car's speed. A silver van in the left curbside lane moves parallel slightly slower, keeping close and limiting room to merge. To the right beyond the posts, a queue of oncoming cars and a bus creep toward the camera, remaining separated from the ego path.", "hazard_reasoning": "There is a white van moving forward in front of the ego car in the ego lane, because traffic lights are green. You should follow the vehicle ahead to maintain safe distance and keep pace with traffic as the light turns green."}
{"id": "train_06040", "split": "train", "clip_key": "2020-0204-150838_068533_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "068533"}, "frames": ["2020-0204-150838_068533_movie_t-3.jpg", "2020-0204-150838_068533_movie_t-2.jpg", "2020-0204-150838_068533_movie_t-1.jpg", "2020-0204-150838_068533_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with three same-direction lanes and a concrete barrier on the right has smooth pavement and moderate, steady traffic flow. A silver truck in the ego lane ahead drives away from the ego car at a steady pace, maintaining a growing gap. In the lane to the left, a large white container semi runs slightly ahead and continues straight alongside without drifting. Farther ahead in the center lane, another medium truck proceeds straight and remains in its lane without signaling. No traffic signals or speed signs are prominent, and there are no obvious hazards.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06041", "split": "train", "clip_key": "2020-0213-143552_005496_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "005496"}, "frames": ["2020-0213-143552_005496_movie_t-3.jpg", "2020-0213-143552_005496_movie_t-2.jpg", "2020-0213-143552_005496_movie_t-1.jpg", "2020-0213-143552_005496_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban multi-lane arterial has two lanes in each direction with a painted center line, smooth pavement, and moderate, steady traffic. There is a brown truck parked ahead in the ego lane along the left curb, occupying part of the lane and constraining the ego car's path. A scooter ahead in the same lane rides away along the green shoulder as it approaches the parked truck, keeping close to the ego path. Cars in the adjacent right lane travel straight and overtake, which may limit a merge to pass the obstacle. Oncoming traffic moves in the far-right lanes, and a distant overhead traffic signal is visible.", "hazard_reasoning": "There is a brown truck parked in front of the ego car in the ego lane. The parked truck blocks the lane ahead and obscures visibility, requiring a careful manoeuvre to avoid collision and maintain safe lane position."}
{"id": "train_06042", "split": "train", "clip_key": "2020-0212-102546_047886_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "047886"}, "frames": ["2020-0212-102546_047886_movie_t-3.jpg", "2020-0212-102546_047886_movie_t-2.jpg", "2020-0212-102546_047886_movie_t-1.jpg", "2020-0212-102546_047886_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the slowing truck ahead", "environment_perception": "An urban arterial under an elevated expressway carries three same-direction lanes with clear yellow lane lines and smooth pavement; traffic is moderate, with a slower queue forming in the right lane. Directly ahead in the center lane, a white van travels straight then eases off to match the flow, keeping the ego vehicle's pace. In the right lane ahead, a gray truck with yellow and blue accents slows in congestion, and the cars beside it creep forward, making that lane the bottleneck. In the left lane, a small white van proceeds straight at a similar speed without encroaching on the ego lane. Overhead blue direction signs mark upcoming routes through the city.", "hazard_reasoning": "There is a gray, yellow, and blue truck slowing down in the right lane due to traffic congestion. Its reduced speed may require you to adjust your speed and maintain a safe following distance to avoid sudden braking."}
{"id": "train_06043", "split": "train", "clip_key": "2020-0203-114632_072832_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "072832"}, "frames": ["2020-0203-114632_072832_movie_t-3.jpg", "2020-0203-114632_072832_movie_t-2.jpg", "2020-0203-114632_072832_movie_t-1.jpg", "2020-0203-114632_072832_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with a single left-hand lane in each direction runs under a pedestrian overpass, divided by double yellow lines and a low median; the asphalt is dry and intact, and traffic moves slowly in moderate to heavy volume. A white van directly ahead in the ego lane slows because congestion builds further up the corridor, compressing gaps. Farther ahead in the same lane a dump truck also creeps forward, further constraining the pace. To the right beyond the median, oncoming cars stream past steadily with no immediate interaction. A narrow guardrail and curb line the left shoulder, creating a confined lane but no obstacles in the path.", "hazard_reasoning": "There is a white van slowing down in the ego lane because of traffic congestion ahead. The traffic congestion ahead is causing reduced speed, so the driver should slow down to maintain a safe following distance and avoid sudden braking."}
{"id": "train_06044", "split": "train", "clip_key": "titan_clip_280_000240_movie", "source": {"subset": "titan", "scenario": "clip_280", "frame": "000240"}, "frames": ["titan_clip_280_000240_movie_t-3.jpg", "titan_clip_280_000240_movie_t-2.jpg", "titan_clip_280_000240_movie_t-1.jpg", "titan_clip_280_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking on road edge", "environment_perception": "A narrow urban commercial street with no centerline runs between a fence and shopfronts, the pavement smooth and the lane partially narrowed by a row of red cones on the left; traffic is light with mostly pedestrians. On the left ahead, a pedestrian in a white shirt and black pants walks away from the ego along the coned edge, moving in the same direction and remaining close to the lane where they could encroach on the path. On the right near the storefronts, two pedestrians walk toward the ego at the curb, passing by without entering the lane. Farther ahead on the left, a white truck stands partly in the lane beside the cones, constricting the available space. Bicycles are parked along the right.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the left side of the road, away from the ego car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should be aware."}
{"id": "train_06045", "split": "train", "clip_key": "titan_clip_1301_000354_movie", "source": {"subset": "titan", "scenario": "clip_1301", "frame": "000354"}, "frames": ["titan_clip_1301_000354_movie_t-3.jpg", "titan_clip_1301_000354_movie_t-2.jpg", "titan_clip_1301_000354_movie_t-1.jpg", "titan_clip_1301_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A busy urban commercial street with a single narrow lane paved in stone is lined with shops, trees, and bollards; there is no center divider and vehicle traffic is very light and slow. A white delivery truck is parked along the left edge ahead, occupying part of the lane and restricting the ego vehicle's passage. A pedestrian wearing a cap, blue shirt, and black pants loads the truck at its rear to the left front of the ego car, standing partly in the lane because the vehicle is stopped there and thus constraining the path. Crowds on the right sidewalk walk and gather near the curb by the bollards, but they remain off the roadway.", "hazard_reasoning": "A pedestrian wearing a cap, wearing black pants, wearing a blue shirt, loading a truck, in front of the ego car, to the left side, because of the parked vehicle. The driver should slow down to avoid colliding with the pedestrian who may step into the lane unexpectedly due to limited visibility from the parked truck."}
{"id": "train_06046", "split": "train", "clip_key": "2020-0131-103016_022608_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "022608"}, "frames": ["2020-0131-103016_022608_movie_t-3.jpg", "2020-0131-103016_022608_movie_t-2.jpg", "2020-0131-103016_022608_movie_t-1.jpg", "2020-0131-103016_022608_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes runs gently downhill, its carriageway separated from oncoming traffic by a metal fence median; the pavement is dry and in good condition, and traffic is light. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. Beyond the fence to the right, several vehicles travel in the opposite direction and remain separated from the ego path. An overhead sign gantry is visible ahead, with no active signals apparent.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane. The vehicle ahead is decelerating, so the driver must slow down to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_06047", "split": "train", "clip_key": "2020-0220-151845_030076_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "030076"}, "frames": ["2020-0220-151845_030076_movie_t-3.jpg", "2020-0220-151845_030076_movie_t-2.jpg", "2020-0220-151845_030076_movie_t-1.jpg", "2020-0220-151845_030076_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, the pavement is smooth, and a right-side barrier separates traffic with overall moderate flow. Directly ahead in the ego lane, a pink flatbed truck covered with a yellow tarp slows and constrains the ego car's pace as vehicles bunch ahead. In the adjacent right lane, a small dark minivan travels slightly ahead in the same direction. Along the left curb, a white van is stopped on the shoulder. Prohibitory roadside signs are posted on the left.", "hazard_reasoning": "There is a pink truck slowing in the ego lane, in front of the ego-car, because of traffic congestion ahead on the road. You need to reduce speed to maintain a safe following distance and avoid a rear-end collision under these slowing conditions."}
{"id": "train_06048", "split": "train", "clip_key": "2020-0218-103119_053591_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "053591"}, "frames": ["2020-0218-103119_053591_movie_t-3.jpg", "2020-0218-103119_053591_movie_t-2.jpg", "2020-0218-103119_053591_movie_t-1.jpg", "2020-0218-103119_053591_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban signalized intersection under an elevated roadway approaches on a two-lane same-direction street with a small raised island at the crosswalk; the pavement is smooth and traffic is moderate, with vehicles easing toward the stop line. A white box truck directly ahead in the ego lane slows and comes to a stop at the zebra crossing, constraining the ego car's pace. In the adjacent right lane a red sedan just ahead also brakes to a stop alongside the truck. On the left sidewalk two pedestrians wait at the corner near the fence without entering the road. At the right edge of the crosswalk a person begins to cross from the curb and may enter the ego lane. The traffic signal facing the approach shows red.", "hazard_reasoning": "The white truck is slowing in front of the ego car in the ego lane. Because the truck ahead is decelerating unexpectedly, the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_06049", "split": "train", "clip_key": "2020-0204-103442_032322_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "032322"}, "frames": ["2020-0204-103442_032322_movie_t-3.jpg", "2020-0204-103442_032322_movie_t-2.jpg", "2020-0204-103442_032322_movie_t-1.jpg", "2020-0204-103442_032322_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial under an elevated structure carries at least two same-direction lanes on smooth asphalt, with moderate, slow-moving traffic. Immediately ahead in the ego lane, a large white box truck begins accelerating from a stop as the signal turns green, and it governs the ego car's pace. In the lane to the right, a white van slightly ahead rolls forward alongside, limiting room for a right merge. In the lane to the left, a silver sedan followed by a white SUV proceed slowly ahead, occupying gaps in that lane. A blue overhead sign indicates Kamiuma straight ahead, and metal railings line the left sidewalk.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06050", "split": "train", "clip_key": "2020-0204-150838_077533_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "077533"}, "frames": ["2020-0204-150838_077533_movie_t-3.jpg", "2020-0204-150838_077533_movie_t-2.jpg", "2020-0204-150838_077533_movie_t-1.jpg", "2020-0204-150838_077533_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban expressway under an elevated viaduct shows three same-direction lanes with clear asphalt and heavy, mostly stopped traffic. The ego vehicle travels in the center lane with no oncoming traffic. A white box truck is directly ahead in the ego lane and is stopped, constraining the ego car's pace. In the left lane, a smaller delivery truck slightly ahead is also stopped or creeping, keeping close alongside the ego vehicle. In the right lane, a silver hatchback just ahead edges forward parallel to the ego car, potentially affecting any lane change. Roadside barriers line the right shoulder, but the lanes remain unobstructed.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The truck ahead has halted unexpectedly, requiring you to stop promptly to prevent a rear-end collision."}
{"id": "train_06051", "split": "train", "clip_key": "2020-0207-151349_077801_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_077801_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_077801_movie_t-3_augB1.jpg", "2020-0207-151349_077801_movie_t-2_augB1.jpg", "2020-0207-151349_077801_movie_t-1_augB1.jpg", "2020-0207-151349_077801_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated structure with a right-side guardrail; the pavement is dry and traffic is moderate and slow-moving. A brown truck ahead in the ego lane slows, constraining the ego car's pace. Slightly ahead in the adjacent left lane, a white van also slows in parallel, limiting an easy lane change. A dark sedan to the left-front edges forward in its lane, passing the truck while remaining close to the ego vehicle.", "hazard_reasoning": "There is a brown truck slowing in the ego lane, in front of the ego car. Slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_06052", "split": "train", "clip_key": "titan_clip_32_000054_movie", "source": {"subset": "titan", "scenario": "clip_32", "frame": "000054"}, "frames": ["titan_clip_32_000054_movie_t-3.jpg", "titan_clip_32_000054_movie_t-2.jpg", "titan_clip_32_000054_movie_t-1.jpg", "titan_clip_32_000054_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street appears with a narrow single lane, no median, and even brick paving; traffic is light and slow with mostly pedestrians. Orange cones line the right curb, narrowing the usable lane. Two pedestrians stand together on the left side ahead, talking near the roadway. Another pedestrian walks ahead in the ego lane along the left edge, moving away and constraining the vehicle's pace. A small white truck is stopped on the right side beside the cones, partly jutting into the lane and creating a pinch point.", "hazard_reasoning": "There are two pedestrians talking in a group and standing on the left side of the road. These individuals are close to the travel lane and may step off the curb unexpectedly, requiring the driver to slow down to avoid a potential collision."}
{"id": "train_06053", "split": "train", "clip_key": "2020-0205-103411_077549_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "077549"}, "frames": ["2020-0205-103411_077549_movie_t-3.jpg", "2020-0205-103411_077549_movie_t-2.jpg", "2020-0205-103411_077549_movie_t-1.jpg", "2020-0205-103411_077549_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with multiple lanes and a narrow planted median runs between mid-rise buildings; the pavement is smooth and traffic is moderate. Ahead in the ego lane, a black covered truck slows as vehicles bunch up further ahead, constraining the ego vehicle's pace. Slightly to its left, a white box truck in the adjacent lane holds a similar speed just ahead, limiting an immediate merge. Across the median, oncoming cars and a truck move steadily without interaction. A pedestrian footbridge spans the road ahead.", "hazard_reasoning": "There is a black truck slowing down in the ego lane, because of traffic congestion ahead. The black truck's reduced speed indicates congestion; slow down to maintain a safe following distance."}
{"id": "train_06054", "split": "train", "clip_key": "2020-0131-135401_074976_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "074976"}, "frames": ["2020-0131-135401_074976_movie_t-3.jpg", "2020-0131-135401_074976_movie_t-2.jpg", "2020-0131-135401_074976_movie_t-1.jpg", "2020-0131-135401_074976_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with multiple same-direction lanes runs between tall buildings, with a barrier on the right; the dry pavement appears smooth and traffic thickens into a slow-moving queue. A black hatchback directly ahead in the ego lane slows because of congestion ahead, setting the pace for the ego vehicle. In the lane to the left, a tall white box truck is slightly ahead and decelerates with the queue, limiting a leftward lane change. On the right, a large tanker truck travels alongside just ahead, keeping close to the lane line and further constraining maneuvering. Overhead guide signs hang above the roadway.", "hazard_reasoning": "There is a black hatchback slowing down in the ego lane, because there is traffic congestion ahead. Stopping promptly will prevent a rear-end collision with the slowing vehicle due to the congestion ahead."}
{"id": "train_06055", "split": "train", "clip_key": "titan_clip_6_000270_movie", "source": {"subset": "titan", "scenario": "clip_6", "frame": "000270"}, "frames": ["titan_clip_6_000270_movie_t-3.jpg", "titan_clip_6_000270_movie_t-2.jpg", "titan_clip_6_000270_movie_t-1.jpg", "titan_clip_6_000270_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban narrow one-lane street with brick pavement runs between tall buildings, with no median and light traffic as the lane approaches a cross street. Orange cones and a construction-wrapped facade line the right edge. A white van directly ahead in the ego lane is stopped at the junction for a stop sign, temporarily holding the ego car. Farther ahead along the left curb, another small white van is stationary, slightly narrowing the passage. On the right at a storefront, two pedestrians stand close to the curb and one steps forward, potentially entering the lane. A triangular stop sign is visible at the intersection.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a stop-sign. You must stop to avoid collision with the halted van and comply with the stop sign."}
{"id": "train_06056", "split": "train", "clip_key": "titan_clip_311_000288_movie", "source": {"subset": "titan", "scenario": "clip_311", "frame": "000288"}, "frames": ["titan_clip_311_000288_movie_t-3.jpg", "titan_clip_311_000288_movie_t-2.jpg", "titan_clip_311_000288_movie_t-1.jpg", "titan_clip_311_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking on right sidewalk", "environment_perception": "A narrow urban two-way street with patched pavement runs between low-rise buildings; orange fencing and cones mark construction along the left, and traffic is light with the oncoming lane clear. On the right edge close to the camera, a pedestrian in black pants and a white shirt carries an umbrella and walks toward the ego car along the curb, as the left-side works occupy space and he may step into the lane. Ahead in the ego lane, a silver construction truck stands partially in the roadway beside the worksite, narrowing the passage and constraining the ego's pace. Farther ahead near the center-left, another pedestrian proceeds away along the worksite edge, moving near but outside the path. A white car is parked along the right curb opposite the truck, creating a pinch point that further narrows the corridor.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, carrying an umbrella, and walking on the right side of the road towards the ego car, because of construction work on the left. The driver should be aware of the pedestrian's movement near the roadway edge and prepare to slow or stop to avoid a potential collision."}
{"id": "train_06057", "split": "train", "clip_key": "2020-0217-110854_070673_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "070673"}, "frames": ["2020-0217-110854_070673_movie_t-3.jpg", "2020-0217-110854_070673_movie_t-2.jpg", "2020-0217-110854_070673_movie_t-1.jpg", "2020-0217-110854_070673_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with left-hand traffic runs under a pedestrian footbridge; lanes are well marked with a hatched buffer, the pavement looks dry, and traffic is moderate and flowing. A white mini truck ahead in the ego lane proceeds straight at a steady speed, keeping the ego vehicle's pace. An oncoming silver van to the right approaches and passes in its near lane, remaining separated by the center markings. Farther ahead, several cars in both directions move smoothly without congestion. A person stands on the right sidewalk near the curb but remains off the roadway.", "hazard_reasoning": "There is a white truck driving in front of the ego car in the ego lane, because of the green traffic light. Follow the vehicle ahead to maintain smooth traffic flow and be prepared for any sudden stops under this situation."}
{"id": "train_06058", "split": "train", "clip_key": "titan_clip_1077_000534_movie", "source": {"subset": "titan", "scenario": "clip_1077", "frame": "000534"}, "frames": ["titan_clip_1077_000534_movie_t-3.jpg", "titan_clip_1077_000534_movie_t-2.jpg", "titan_clip_1077_000534_movie_t-1.jpg", "titan_clip_1077_000534_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way road with a single lane each way runs between buildings; smooth pavement and a left-side construction zone with cones narrow the carriageway, and traffic is light with no vehicles ahead or oncoming. Two pedestrians in gray T-shirts walk away from the camera along the right edge where there is no sidewalk, close to the ego lane and potentially entering it. Farther ahead near the center of the lane, another pedestrian walks in the same direction, briefly occupying the travel path and constraining pace. At the near right edge, a person stands by the curb next to an entrance, close to the lane.", "hazard_reasoning": "There are two pedestrians wearing a gray t-shirt, walking on the right side of the road, away from the ego car, because there are no sidewalks. The driver should slow down because pedestrians are walking on the road without a sidewalk, posing a collision risk."}
{"id": "train_06059", "split": "train", "clip_key": "titan_clip_1319_000186_movie", "source": {"subset": "titan", "scenario": "clip_1319", "frame": "000186"}, "frames": ["titan_clip_1319_000186_movie_t-3.jpg", "titan_clip_1319_000186_movie_t-2.jpg", "titan_clip_1319_000186_movie_t-1.jpg", "titan_clip_1319_000186_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street has a single narrow lane with red-edged shoulders, no center divider, and smooth pavement; traffic is light with no moving vehicles visible. A pedestrian in front of the ego car, wearing a gray shirt and black pants, crosses the lane toward the right side midblock where there is no crosswalk, directly occupying the ego path. Several pedestrians walk ahead along the left sidewalk beside bollards, moving parallel to the lane and posing little interaction with the vehicle. Shops and utility poles line both sides, creating a constrained corridor.", "hazard_reasoning": "There is a pedestrian in front of the ego car, wearing a gray shirt and black pants, crossing to the right side of the road, because there is no crosswalk. Slow down to yield to the pedestrian crossing unexpectedly and avoid collision."}
{"id": "train_06060", "split": "train", "clip_key": "2020-0220-102630_029735_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "029735"}, "frames": ["2020-0220-102630_029735_movie_t-3.jpg", "2020-0220-102630_029735_movie_t-2.jpg", "2020-0220-102630_029735_movie_t-1.jpg", "2020-0220-102630_029735_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the stopped van due to congestion ahead.", "environment_perception": "An urban two-lane road with no median passes between midrise buildings; the pavement is smooth and traffic is heavy and slow. Ahead the flow compresses around orange cones and a small flatbed trailer, forming a bottleneck. On the right, a black van is stopped in the destination lane for the ego vehicle's rightward lane change, held by congestion ahead. Ahead in the current lane, a white hatchback slows behind a tall box truck that creeps forward and determines the pace. Between lanes, two scooter riders filter toward the front of the queue and may edge into the ego lane near the constriction.", "hazard_reasoning": "There is a black van stopped in the destination lane of the ego car changing lanes to the right, because of traffic congestion ahead. The van's halt and ongoing congestion reduce maneuvering space and increase collision risk, so yielding is necessary."}
{"id": "train_06061", "split": "train", "clip_key": "2020-0131-103016_026433_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "026433"}, "frames": ["2020-0131-103016_026433_movie_t-3.jpg", "2020-0131-103016_026433_movie_t-2.jpg", "2020-0131-103016_026433_movie_t-1.jpg", "2020-0131-103016_026433_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multilane left-hand road with a raised curb on the right has smooth pavement and heavy, slow traffic. A blue sedan directly ahead in the ego lane is stopped because of congestion, blocking the path. A white work truck in the left lane is nearly stationary beside a portable arrow board and construction signage, narrowing that lane and contributing to the queue. Farther ahead in the same lane a dark van creeps forward, briefly opening and closing gaps. A 50 km/h speed-limit sign is visible on the right.", "hazard_reasoning": "There is a blue sedan stopped in the ego lane because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle amid slowed traffic."}
{"id": "train_06062", "split": "train", "clip_key": "titan_clip_636_000438_movie", "source": {"subset": "titan", "scenario": "clip_636", "frame": "000438"}, "frames": ["titan_clip_636_000438_movie_t-3.jpg", "titan_clip_636_000438_movie_t-2.jpg", "titan_clip_636_000438_movie_t-1.jpg", "titan_clip_636_000438_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "An urban, very narrow street without a median runs between buildings; pavement is clean and traffic is light but compressed by delivery activity on the right. Ahead in the middle of the road, a pedestrian wearing a white shirt and blue pants and carrying a handbag walks toward the ego vehicle, occupying its lane. On the right close ahead, a delivery worker unloads at the open back of a truck with a hand cart, and the operation extends into the roadway, reducing clearance. Farther ahead on the right, additional trucks stand stopped for loading and protrude into the travel space, constraining the ego car's progress.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, blue pants, and carrying a handbag, walking in the middle of the road, toward the ego car. The driver should yield because the pedestrian is in your path and limited visibility from the parked truck increases collision risk."}
{"id": "train_06063", "split": "train", "clip_key": "2020-0220-102630_098985_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "098985"}, "frames": ["2020-0220-102630_098985_movie_t-3.jpg", "2020-0220-102630_098985_movie_t-2.jpg", "2020-0220-102630_098985_movie_t-1.jpg", "2020-0220-102630_098985_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings, with a metal fence median separating oncoming traffic; the asphalt is dry and smooth, and traffic is moderate. A small tarp-covered flatbed truck is directly ahead in the ego right lane beside the median, continuing straight and setting the ego car's pace. Slightly ahead to the left, a dark van proceeds in the adjacent lane in the same direction without lane changes. On the far side of the median, several white box trucks travel toward the camera as oncoming traffic, clearly segregated from the ego lane.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane. The slow-moving truck ahead reduces the available stopping distance, so the driver should slow down to maintain a safe following distance."}
{"id": "train_06064", "split": "train", "clip_key": "titan_clip_493_000360_movie", "source": {"subset": "titan", "scenario": "clip_493", "frame": "000360"}, "frames": ["titan_clip_493_000360_movie_t-3.jpg", "titan_clip_493_000360_movie_t-2.jpg", "titan_clip_493_000360_movie_t-1.jpg", "titan_clip_493_000360_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "be aware of traffic barriers on left side", "environment_perception": "An urban residential street with a single narrow carriageway and no centerline runs straight ahead; pavement appears smooth and traffic is light. Low metal traffic barriers line the left edge of the lane beside a raised sidewalk. A pedestrian ahead on the left sidewalk walks in the same direction, remaining clear of the roadway. Farther ahead at the marked crosswalk, another pedestrian moves across the lane from right to left, momentarily occupying the ego vehicle's path. A third person stands on the right sidewalk near the crosswalk, waiting at the curb and potentially preparing to cross.", "hazard_reasoning": "There are traffic barriers along the left side of the lane. These barriers narrow the available roadway and may restrict maneuvering space, so the driver should be aware of traffic barriers on the left side."}
{"id": "train_06065", "split": "train", "clip_key": "2020-0127-132751_040021_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "040021"}, "frames": ["2020-0127-132751_040021_movie_t-3.jpg", "2020-0127-132751_040021_movie_t-2.jpg", "2020-0127-132751_040021_movie_t-1.jpg", "2020-0127-132751_040021_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road descends on a single-lane ramp toward a multi-lane underpass, lined with concrete walls and guardrails; the pavement looks smooth and traffic is light, with no oncoming lanes adjacent. A small box truck ahead in the ego lane continues downhill toward the tunnel and sets the pace. To the right, beyond a guardrail, a large white delivery truck and another medium truck are stopped in a shoulder or bay facing the opposite direction and stay separate from the travel lane. Farther ahead in the underpass, a few vehicles travel in the same direction without affecting the ego vehicle. An overhead pedestrian bridge and the tunnel entrance span the roadway.", "hazard_reasoning": "Although no immediate hazards or obstacles are present, the parked white truck partially obstructs the right lane and may limit visibility. Drivers should remain alert for the upcoming red light and changing traffic conditions, even though the road ahead appears clear."}
{"id": "train_06066", "split": "train", "clip_key": "titan_clip_549_000270_movie", "source": {"subset": "titan", "scenario": "clip_549", "frame": "000270"}, "frames": ["titan_clip_549_000270_movie_t-3.jpg", "titan_clip_549_000270_movie_t-2.jpg", "titan_clip_549_000270_movie_t-1.jpg", "titan_clip_549_000270_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban backstreet with a single narrow lane and no median runs between shops; the asphalt is slightly worn and traffic is light, mostly pedestrians, with no vehicles moving nearby. Two pedestrians walk together in the middle of the lane ahead, moving away from the ego vehicle and effectively setting its pace. On the right edge near storefronts, a man stands at the curb by large bins, stationary and close to the roadway but not stepping out. Farther ahead on the right sidewalk, another pedestrian walks in the same direction, remaining on the curb and not affecting the lane. An open loading bay on the left with cones and curbside furniture on the right further constrict the lane.", "hazard_reasoning": "Two pedestrians walking together in the middle of the road and away from the ego car. The driver should slow down because pedestrians are crossing ahead in the lane, posing a collision risk."}
{"id": "train_06067", "split": "train", "clip_key": "2020-0228-150133_078454_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "078454"}, "frames": ["2020-0228-150133_078454_movie_t-3.jpg", "2020-0228-150133_078454_movie_t-2.jpg", "2020-0228-150133_078454_movie_t-1.jpg", "2020-0228-150133_078454_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes runs beneath an elevated structure; the red-surfaced pavement looks smooth and traffic is moderate, compressing to a stop at a signalized intersection. A silver hatchback directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. In the adjacent left lane, a black minivan and a small truck just ahead slow to a stop and pace the ego vehicle near the intersection. On the right at the junction, a cyclist rides across the side street toward the crosswalk, remaining outside the ego lane. The overhead traffic signal facing the ego approach shows red.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe distance and comply with the red signal ahead."}
{"id": "train_06068", "split": "train", "clip_key": "2020-0226-140503_096231_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "096231"}, "frames": ["2020-0226-140503_096231_movie_t-3.jpg", "2020-0226-140503_096231_movie_t-2.jpg", "2020-0226-140503_096231_movie_t-1.jpg", "2020-0226-140503_096231_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial is shown with two lanes each way divided by a low fenced median; the pavement is dry and smooth, and traffic appears light to moderate as the ego vehicle reaches a wide signalized intersection with zebra crossings. A white hatchback ahead slightly left enters the intersection and turns right across the median, clearing before the ego lane. In the curb lane to the right, a city bus ahead proceeds through the junction and then slows near the stop, potentially setting the pace for vehicles behind it. Oncoming cars beyond the median travel straight through the intersection. A few pedestrians stand on the sidewalks near storefronts by the crosswalks.", "hazard_reasoning": "There are no visible hazards in the scene, so the driver can continue driving normally without additional warnings."}
{"id": "train_06069", "split": "train", "clip_key": "titan_clip_254_000162_movie", "source": {"subset": "titan", "scenario": "clip_254", "frame": "000162"}, "frames": ["titan_clip_254_000162_movie_t-3.jpg", "titan_clip_254_000162_movie_t-2.jpg", "titan_clip_254_000162_movie_t-1.jpg", "titan_clip_254_000162_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian at crosswalk", "environment_perception": "An urban commercial street with multiple lanes runs under an elevated structure; the pavement is smooth and traffic is light as the vehicle approaches a wide crosswalk. Ahead at the crosswalk, several pedestrians are crossing, including a pedestrian in a green shirt carrying a backpack who moves from right to left across the ego lane, temporarily occupying the path. Far ahead in the same direction, a small truck continues straight beneath the bridge and moves away. On the right curb, a white coach bus remains stopped in the curb lane, outside the ego lane.", "hazard_reasoning": "There is a pedestrian wearing a green shirt, carrying a backpack, and crossing the street, from the right side to the left side, ahead at the crosswalk. The driver should yield at the crosswalk because pedestrians have the right of way and are crossing directly in front of the vehicle."}
{"id": "train_06070", "split": "train", "clip_key": "2020-0210-155354_010415_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "010415"}, "frames": ["2020-0210-155354_010415_movie_t-3.jpg", "2020-0210-155354_010415_movie_t-2.jpg", "2020-0210-155354_010415_movie_t-1.jpg", "2020-0210-155354_010415_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of left-turning hatchback", "environment_perception": "An urban two-way street with a single lane each direction approaches a signalized intersection with zebra crosswalks and metal railings; the pavement looks smooth and traffic is light to moderate. An oncoming gray hatchback near the center of the junction begins a left turn in its lane. A white minivan farther ahead proceeds straight toward the camera in the opposing lane through the crosswalk. On the right corner, several pedestrians and a cyclist wait at the curb by the crosswalk, stationary near the roadway.", "hazard_reasoning": "There is a gray hatchback making a left turn in the oncoming lane. Its unexpected turn could cross into the ego-vehicle's path, requiring you to adjust speed or yield to avoid a collision."}
{"id": "train_06071", "split": "train", "clip_key": "2020-0225-102455_062253_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "062253"}, "frames": ["2020-0225-102455_062253_movie_t-3.jpg", "2020-0225-102455_062253_movie_t-2.jpg", "2020-0225-102455_062253_movie_t-1.jpg", "2020-0225-102455_062253_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three same-direction lanes runs between mid-rise buildings, the asphalt smooth and traffic moving at a moderate, steady pace. A white van drives ahead in the ego lane at a constant speed, effectively setting the pace. Another white van is stopped on the left curb beside the outer lane, stationary and close to the roadway but outside the ego path. Cars and trucks in adjacent lanes proceed straight without noticeable lane changes, while oncoming traffic flows on the opposite carriageway to the right behind a metal fence median. No-parking signs are posted on the left, and an overhead gantry spans the road.", "hazard_reasoning": "There is a white van driving in the ego lane. The van ahead may brake suddenly, so the driver should remain aware to respond promptly."}
{"id": "train_06072", "split": "train", "clip_key": "2020-0129-105040_009968_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "009968"}, "frames": ["2020-0129-105040_009968_movie_t-3.jpg", "2020-0129-105040_009968_movie_t-2.jpg", "2020-0129-105040_009968_movie_t-1.jpg", "2020-0129-105040_009968_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial with a metal-railed median and dry, well?arked pavement carries moderate same-direction flow. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. A blue service truck stands stopped along the left curb lane just ahead, narrowing the usable space on that side as the ego vehicle approaches. In the adjacent right lane slightly farther ahead, a bus proceeds straight at a steady speed parallel to the ego vehicle. On the far right beyond the median, oncoming traffic moves smoothly in the opposite carriageway.", "hazard_reasoning": "There is a white truck slowing in the ego lane in front of the ego car. The truck's deceleration increases the risk of a rear-end collision, so the driver should reduce speed to maintain a safe gap."}
{"id": "train_06073", "split": "train", "clip_key": "2020-0131-135401_002489_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "002489"}, "frames": ["2020-0131-135401_002489_movie_t-3.jpg", "2020-0131-135401_002489_movie_t-2.jpg", "2020-0131-135401_002489_movie_t-1.jpg", "2020-0131-135401_002489_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban two-way street with a single lane in each direction and no median is shown, the pavement appears smooth and traffic is light. A white box truck directly ahead in the ego lane accelerates from a stop as the signal turns green, setting the ego vehicle's pace. An oncoming blue van approaches in the opposite lane to the right and continues straight past without encroaching. A pedestrian on the left sidewalk walks along the curb near storefronts but stays off the road. No other notable hazards are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06074", "split": "train", "clip_key": "2020-0204-103442_072061_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "072061"}, "frames": ["2020-0204-103442_072061_movie_t-3.jpg", "2020-0204-103442_072061_movie_t-2.jpg", "2020-0204-103442_072061_movie_t-1.jpg", "2020-0204-103442_072061_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck.", "environment_perception": "An urban two-way street with one narrow lane per direction runs through a residential area, pavement in good condition and traffic light to moderate, slowing near an obstruction ahead. A black sedan directly ahead in the left ego lane reduces speed as it approaches a stopped vehicle, constraining our pace. A white box truck is parked for unloading at the left curb in the ego lane, blocking part of the lane on the left side of the road. An oncoming heavy truck travels toward us in the opposing lane beside this obstruction, limiting the gap for vehicles to pass around it.", "hazard_reasoning": "There is a white truck parked in the ego lane, because it is being unloaded, on the left side of the road. The parked truck partially blocks the driving lane, so the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_06075", "split": "train", "clip_key": "2020-0207-151349_022958_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "022958"}, "frames": ["2020-0207-151349_022958_movie_t-3.jpg", "2020-0207-151349_022958_movie_t-2.jpg", "2020-0207-151349_022958_movie_t-1.jpg", "2020-0207-151349_022958_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement and a central divider carries moderate, steadily moving traffic. A white box truck ahead in the ego lane accelerates and pulls away as traffic ahead moves, briefly setting but then easing the ego car's pace. A small covered flatbed truck in the adjacent right lane runs parallel slightly ahead, continuing straight without drifting toward the ego lane. Another large truck in the far left lane travels forward ahead-left, remaining in its lane and not affecting the ego vehicle. Low sun glare from ahead-left reduces contrast across the scene.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because traffic ahead is moving. The white truck ahead could decelerate or change lanes unexpectedly, so the driver should maintain a safe following distance and remain alert aligned with the warning to follow the vehicle ahead."}
{"id": "train_06076", "split": "train", "clip_key": "2020-0203-114632_027480_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "027480"}, "frames": ["2020-0203-114632_027480_movie_t-3.jpg", "2020-0203-114632_027480_movie_t-2.jpg", "2020-0203-114632_027480_movie_t-1.jpg", "2020-0203-114632_027480_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with multiple lanes in each direction and no physical median stretches ahead; the dry pavement is smooth and traffic appears light. A black van travels ahead in the ego lane and pulls away as the overhead signal ahead shows green, opening the gap to the ego vehicle. Distant oncoming cars proceed in their lanes on the far side of the roadway without affecting the ego path. Two utility trucks are stopped along the right curb beside orange cones, occupying the curb lane and narrowing that side of the road. A pedestrian or two remain on the left sidewalk and do not step into the street.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06077", "split": "train", "clip_key": "2020-0210-101957_085490_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "085490"}, "frames": ["2020-0210-101957_085490_movie_t-3.jpg", "2020-0210-101957_085490_movie_t-2.jpg", "2020-0210-101957_085490_movie_t-1.jpg", "2020-0210-101957_085490_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "On a suburban two-way road with a single lane in each direction, the ego-car proceeds in the left lane along a gentle bend; a solid yellow centerline with a hatched buffer separates directions, the pavement is smooth, and traffic is light. A brown truck directly ahead in the ego lane accelerates away as the road ahead is clear, briefly setting the pace before opening a gap. A few oncoming cars travel steadily in the opposite lane to the right and continue straight without affecting the ego path. A side street branches on the right beyond the chevron zone, and no vehicles merge from it or obstruct the roadway.", "hazard_reasoning": "There is a brown truck accelerating ahead in the ego lane, in front of the ego-car, because there is no traffic congestion ahead. To adapt to its speed increase and maintain a safe following distance, the driver should follow the vehicle ahead."}
{"id": "train_06078", "split": "train", "clip_key": "2020-0228-150133_073428_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "073428"}, "frames": ["2020-0228-150133_073428_movie_t-3.jpg", "2020-0228-150133_073428_movie_t-2.jpg", "2020-0228-150133_073428_movie_t-1.jpg", "2020-0228-150133_073428_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road approaches a signalized intersection and then rises onto an overpass; pavement is dry and smooth and overall traffic is light. A blue hatchback just ahead to the left turns left through the intersection, briefly occupying the ego lane before clearing it. Oncoming traffic in the right-side lanes, including two white vans and a sedan opposite the intersection, waits at its stop line and does not impede the ego path. A white car on the right side street pauses at the corner to turn left into the main road, potentially merging ahead after the crossing. A sign on the right prohibits U-turns at this intersection.", "hazard_reasoning": "No hazards detected; driver can proceed normally."}
{"id": "train_06079", "split": "train", "clip_key": "2020-0129-105040_061900_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061900"}, "frames": ["2020-0129-105040_061900_movie_t-3.jpg", "2020-0129-105040_061900_movie_t-2.jpg", "2020-0129-105040_061900_movie_t-1.jpg", "2020-0129-105040_061900_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down for stopped vehicle ahead.", "environment_perception": "An urban residential street with a narrow two-way single lane and no median stretches ahead; the pavement is clean and dry and traffic is light. A white mini truck approaches in the oncoming lane at low speed, keeping to its side as it nears the ego vehicle on the tight roadway. To the right, a silver sedan is stopped in the oncoming lane beside a building, reducing the available width for the approaching truck. On the left sidewalk near a corner, two pedestrians stand at the curb while another walks away, their proximity to the edge meaning they may step into the lane. Short bollards line the right edge and a red painted shoulder narrows toward a driveway, creating a confined passage.", "hazard_reasoning": "There is a silver sedan stopped in the right lane. You should slow down to avoid colliding with the stationary vehicle blocking your path."}
{"id": "train_06080", "split": "train", "clip_key": "titan_clip_1028_000096_movie", "source": {"subset": "titan", "scenario": "clip_1028", "frame": "000096"}, "frames": ["titan_clip_1028_000096_movie_t-3.jpg", "titan_clip_1028_000096_movie_t-2.jpg", "titan_clip_1028_000096_movie_t-1.jpg", "titan_clip_1028_000096_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "A narrow urban two-way street lined with shops and small restaurants has smooth pavement and light traffic; the ego vehicle moves slowly as the left-side travel space is obstructed. Ahead on the left in the ego lane, a blue truck is stopped while being unloaded, occupying most of the lane. Two workers stand at its open rear handling a dolly and boxes in the roadway, further constricting the path and constraining the ego vehicle's pace. On the right side ahead, a pedestrian with a white umbrella walks away along the storefronts near the narrow gap to the right of the truck. No moving vehicles approach from the opposite direction, and no traffic signals are visible.", "hazard_reasoning": "There is a blue truck stopped, on the left side of the road, in the ego lane, because it is being unloaded. The stopped truck blocks part of the lane and conceals pedestrians, so the driver should carefully manoeuvre around it to prevent a collision."}
{"id": "train_06081", "split": "train", "clip_key": "titan_clip_216_000306_movie", "source": {"subset": "titan", "scenario": "clip_216", "frame": "000306"}, "frames": ["titan_clip_216_000306_movie_t-3.jpg", "titan_clip_216_000306_movie_t-2.jpg", "titan_clip_216_000306_movie_t-1.jpg", "titan_clip_216_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow single lane paved in bricks runs between tall buildings, with no divider and very light vehicular traffic. The ego vehicle moves straight as a pedestrian carrying a handbag walks ahead on the right side of the roadway, moving away from the car and partially in the travel path. Another pedestrian farther ahead continues along the middle of the lane in the same direction, effectively constraining the vehicle's pace. Several people stand and stroll near the right curb, close to the lane but not entering it. A large 30 marking is painted on the pavement indicating the posted speed.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking on the right side of the road, away from the ego car. The pedestrian's proximity to the roadway could require you to slow down to avoid potential crossing or sudden movement."}
{"id": "train_06082", "split": "train", "clip_key": "2020-0217-110854_004047_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "004047"}, "frames": ["2020-0217-110854_004047_movie_t-3.jpg", "2020-0217-110854_004047_movie_t-2.jpg", "2020-0217-110854_004047_movie_t-1.jpg", "2020-0217-110854_004047_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow lane and no median runs straight ahead; the asphalt is dry and traffic is heavy and slow. Several vans are stopped along the left curb, narrowing the lane. A white sedan directly ahead in the ego lane slows because a truck further ahead also slows, and this sequence governs the ego car's pace. Farther up, the truck in the same lane creeps toward a stop, creating a short queue. On the right sidewalk, a pedestrian carrying a bag walks near the curb while a bicyclist waits with a bicycle, both close to the roadway and potentially edging toward the lane. Overhead blue guide signs provide directions to nearby districts.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of truck slowing ahead. You should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_06083", "split": "train", "clip_key": "titan_clip_1345_000216_movie", "source": {"subset": "titan", "scenario": "clip_1345", "frame": "000216"}, "frames": ["titan_clip_1345_000216_movie_t-3.jpg", "titan_clip_1345_000216_movie_t-2.jpg", "titan_clip_1345_000216_movie_t-1.jpg", "titan_clip_1345_000216_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of workers and cargo near the truck", "environment_perception": "A narrow urban street without a center divider runs between tall buildings, the pavement is smooth, and traffic is light. A white van occupies the left curbside right beside the ego vehicle as it passes, reducing the available width. A white sedan ahead in the same direction moves slowly along the lane and sets the ego vehicle's pace. Farther ahead on the left, a white box truck is parked for unloading, narrowing the roadway as the sedan approaches it. No salient traffic signals are visible.", "hazard_reasoning": "There is a white truck parked on the left side of the road, away from the ego car, because it is being unloaded. The unloading activity may involve workers or cargo entering the roadway unexpectedly, so the driver should maintain caution to avoid collision."}
{"id": "train_06084", "split": "train", "clip_key": "2020-0131-103016_039283_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "039283"}, "frames": ["2020-0131-103016_039283_movie_t-3.jpg", "2020-0131-103016_039283_movie_t-2.jpg", "2020-0131-103016_039283_movie_t-1.jpg", "2020-0131-103016_039283_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "An urban multi-lane arterial approaches a large intersection with no visible median; the asphalt is smooth and traffic is moderate and steady. Ahead in the ego lane a small flatbed truck moves slowly toward the junction, constraining the pace. In the adjacent middle lane a white box truck continues straight at similar speed, holding its lane. On the right side of the road in the oncoming lanes, a white van drives toward the ego car among opposing traffic but remains in its lane. Overhead signal gantries and direction signs span the junction ahead.", "hazard_reasoning": "There is a white van driving toward the ego car, on the right side of the road. The white van is traveling toward you on the right side and may cut into your lane, so you should yield to avoid a collision."}
{"id": "train_06085", "split": "train", "clip_key": "2020-0204-150838_044563_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "044563"}, "frames": ["2020-0204-150838_044563_movie_t-3.jpg", "2020-0204-150838_044563_movie_t-2.jpg", "2020-0204-150838_044563_movie_t-1.jpg", "2020-0204-150838_044563_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In an urban waterfront setting, the ego car travels on a multi-lane arterial approaching a truss bridge; lanes are well marked, the pavement is smooth, and traffic is moderate. No physical median is visible as several same-direction lanes split toward the bridge and the riverside. A white van drives ahead in the ego lane and gradually pulls away toward the bridge, setting the immediate pace. Ahead to the left, a white hatchback drifts left into a riverside lane, moving slowly to diverge from the bridge path without entering the ego lane. On the right, a small van advances alongside and begins to merge toward the center lanes, potentially taking a spot ahead of the ego vehicle. An overhead traffic signal stands at the bridge entrance.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. Following the vehicle ahead ensures the driver maintains a safe distance to react if it brakes suddenly."}
{"id": "train_06086", "split": "train", "clip_key": "2020-0204-103442_050931_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "050931"}, "frames": ["2020-0204-103442_050931_movie_t-3.jpg", "2020-0204-103442_050931_movie_t-2.jpg", "2020-0204-103442_050931_movie_t-1.jpg", "2020-0204-103442_050931_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated structure carries two same-direction lanes with smooth pavement and moderate, steadily moving traffic toward an upcoming intersection. Ahead in the rightmost ego lane, a gray van slows to turn right, briefly reducing the pace of the lane. In the adjacent left lane, a small flatbed truck travels straight at a similar speed, limiting any easy merge around the slowing van. Farther ahead in the ego lane, a darker boxy truck proceeds straight near a marked crosswalk, adding to a short queue. Fences line the right side and a guardrail lines the left sidewalk, with no visible hazards in the roadway.", "hazard_reasoning": "There is a gray van that is slowing down in the right lane because it is turning right. The van's deceleration could require sudden braking if not anticipated, so the driver should slow down to maintain a safe following distance."}
{"id": "train_06087", "split": "train", "clip_key": "2020-0129-144857_059204_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "059204"}, "frames": ["2020-0129-144857_059204_movie_t-3.jpg", "2020-0129-144857_059204_movie_t-2.jpg", "2020-0129-144857_059204_movie_t-1.jpg", "2020-0129-144857_059204_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated two-way road runs between apartment blocks, with one lane per direction divided by a low concrete median; the pavement appears smooth with a narrow transverse hump across the lane, and traffic flows light to moderate. A white truck ahead in the ego lane continues straight downhill and gradually pulls away as traffic in front moves, so it does not constrain the ego car. Several oncoming cars to the right of the median travel uphill at a steady pace and remain separated from the ego path. A white van in the opposite direction passes near the median without affecting the ego vehicle.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because traffic ahead is moving. You should follow the vehicle ahead to adapt to the traffic flow and maintain a safe distance."}
{"id": "train_06088", "split": "train", "clip_key": "2020-0129-144857_018956_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "018956"}, "frames": ["2020-0129-144857_018956_movie_t-3.jpg", "2020-0129-144857_018956_movie_t-2.jpg", "2020-0129-144857_018956_movie_t-1.jpg", "2020-0129-144857_018956_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction runs between shops on the left and a high barrier wall on the right, the smooth pavement carrying slow-to-moderate traffic. Directly ahead in the ego lane, a black sedan reduces speed because a large white box truck farther ahead is slowing, and together they constrain the ego vehicle's pace. In the adjacent left lane slightly ahead, a small white truck rolls slowly in parallel while maintaining its lane and not affecting the ego path. A few pedestrians wait on the left sidewalk by storefronts, staying clear of the road.", "hazard_reasoning": "A black sedan slowing down in the ego lane because of a truck slowing down ahead. The black sedan's deceleration due to the slowing truck ahead suggests potential abrupt braking; the driver should slow down to maintain a safe following distance."}
{"id": "train_06089", "split": "train", "clip_key": "titan_clip_1034_000288_movie", "source": {"subset": "titan", "scenario": "clip_1034", "frame": "000288"}, "frames": ["titan_clip_1034_000288_movie_t-3.jpg", "titan_clip_1034_000288_movie_t-2.jpg", "titan_clip_1034_000288_movie_t-1.jpg", "titan_clip_1034_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian approaching roadway", "environment_perception": "An urban commercial street with a narrow two-way shared roadway is paved with interlocking tiles, lacks a median, and shows light motor traffic but steady pedestrian flow. On the left edge near the ego vehicle, a pedestrian in a white shirt carrying a bag walks toward the camera along the roadway and may enter the ego lane. In the middle distance, one or two pedestrians move diagonally across the road ahead, occupying the ego path and slowing overall progress. Farther ahead in the center, a small white van travels slowly away along the same path. No traffic signals or speed signs are clearly visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a bag, walking on the left side of the road, towards the ego car. This pedestrian is moving toward the vehicle's path and may enter the roadway, so the driver should be aware of their presence."}
{"id": "train_06090", "split": "train", "clip_key": "titan_clip_1000_000432_movie", "source": {"subset": "titan", "scenario": "clip_1000", "frame": "000432"}, "frames": ["titan_clip_1000_000432_movie_t-3.jpg", "titan_clip_1000_000432_movie_t-2.jpg", "titan_clip_1000_000432_movie_t-1.jpg", "titan_clip_1000_000432_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van", "environment_perception": "A narrow urban two-way street runs between closely spaced buildings, with smooth asphalt, no median, and light traffic. The ego vehicle keeps left. Ahead on the right, a black van is parked in the ego lane with its rear open as it is being unloaded, partially blocking the corridor and shaping the ego vehicle's path. Slightly ahead and left of center, a pedestrian pushes a stroller slowly along the roadway in the same direction, remaining within the lane and potentially occupying the ego path. No signals or oncoming vehicles are visible.", "hazard_reasoning": "There is a black van parked on the right side of the road, in the ego lane, because it is being unloaded. You need to manoeuvre around the parked van to avoid a collision and maintain safe lane position."}
{"id": "train_06091", "split": "train", "clip_key": "2020-0131-135401_057356_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "057356"}, "frames": ["2020-0131-135401_057356_movie_t-3.jpg", "2020-0131-135401_057356_movie_t-2.jpg", "2020-0131-135401_057356_movie_t-1.jpg", "2020-0131-135401_057356_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs straight between mid-rise buildings with smooth dry pavement, and traffic is moderate but compressing ahead. A silver sedan in the ego lane ahead slows because of congestion further up, increasing the gap as the flow bunches. A white hatchback slightly ahead to the right also reduces speed in its lane, pacing the queue and limiting merging space. Farther ahead, a white van in the center lanes brakes with the pack and sets the pace for vehicles behind. Overhead blue direction signs and a pedestrian overpass span the road, and low pylons line the right edge; no other hazards are evident.", "hazard_reasoning": "There is a silver sedan slowing down in the ego lane, away from the ego car, because of traffic congestion ahead. The slowing indicates rising congestion ahead, so the driver should slow down to maintain a safe distance and avoid sudden braking."}
{"id": "train_06092", "split": "train", "clip_key": "titan_clip_808_000450_movie", "source": {"subset": "titan", "scenario": "clip_808", "frame": "000450"}, "frames": ["titan_clip_808_000450_movie_t-3.jpg", "titan_clip_808_000450_movie_t-2.jpg", "titan_clip_808_000450_movie_t-1.jpg", "titan_clip_808_000450_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane in each direction and no median, the worn pavement bends slightly left and traffic is light with no oncoming vehicles. A pedestrian wearing black shorts crosses from the right to the left on the marked crosswalk ahead, moving across the ego lane and constraining the approach. On the right curb beside the crossing, another pedestrian waits near the bollards by the storefront, close to the roadway. On the left edge ahead, a large white box truck stands stationary partly in the lane, narrowing the available space. A blue pedestrian crossing sign is visible on the right.", "hazard_reasoning": "There is a pedestrian wearing black shorts and crossing from the right side to the left side of the street ahead at the pedestrian crossing. The driver should slow down to allow the pedestrian to cross safely and avoid a collision."}
{"id": "train_06093", "split": "train", "clip_key": "2020-0221-115122_012876_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "012876"}, "frames": ["2020-0221-115122_012876_movie_t-3.jpg", "2020-0221-115122_012876_movie_t-2.jpg", "2020-0221-115122_012876_movie_t-1.jpg", "2020-0221-115122_012876_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban tunnel carries two lanes in the same direction with a right-side guardrail and overhead lighting, the pavement is dry and traffic is heavy as vehicles bunch into a slow queue ahead. A white van directly ahead in the ego lane slows because of congestion ahead, controlling the ego vehicle's pace. A black sedan in the right lane slightly ahead shows brake lights and crawls forward alongside, limiting any chance to pass. A scooter on the far right edge proceeds along the lane by the guardrail, filtering past the slowed cars and moving ahead of the nearby sedan.", "hazard_reasoning": "There is a white van slowing in the ego lane because of traffic congestion ahead on the road. The van's reduced speed signals increasing congestion, so you should slow down to maintain a safe distance and avoid abrupt braking."}
{"id": "train_06094", "split": "train", "clip_key": "2020-0228-102841_030953_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "030953"}, "frames": ["2020-0228-102841_030953_movie_t-3.jpg", "2020-0228-102841_030953_movie_t-2.jpg", "2020-0228-102841_030953_movie_t-1.jpg", "2020-0228-102841_030953_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban street with a single lane in the ego direction approaches an intersection and marked crosswalk, with smooth pavement, guardrails on the right, and construction fencing along the left sidewalk; overall traffic is light on the cross street. Ahead, two pedestrians wearing a pink coat and a black coat cross from the left to the right across the crosswalk, directly in the ego vehicle's path and constraining its approach. On the cross street beyond them, a few cars travel laterally through the junction without interacting with the ego vehicle.", "hazard_reasoning": "There are two pedestrians wearing a pink coat and a black coat and crossing the street from the left side to the right side of the road. The driver should stop to yield to the crossing pedestrians and avoid a collision."}
{"id": "train_06095", "split": "train", "clip_key": "2020-0131-135401_007970_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "007970"}, "frames": ["2020-0131-135401_007970_movie_t-3.jpg", "2020-0131-135401_007970_movie_t-2.jpg", "2020-0131-135401_007970_movie_t-1.jpg", "2020-0131-135401_007970_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban street with no median and smooth pavement appears, and traffic is light but momentarily halted. A white box truck is stopped directly ahead in the ego lane, blocking the path and constraining the ego car's pace. Several white vans are parked along the left curb near a side street, remaining stationary and narrowing the available corridor. The right side is lined by a fence and trees, and strong sun glare from the upper right casts deep shadows across the roadway.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The white truck is stopped directly in the ego lane ahead, requiring the driver to stop immediately to avoid a collision."}
{"id": "train_06096", "split": "train", "clip_key": "2020-0129-105040_068403_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "068403"}, "frames": ["2020-0129-105040_068403_movie_t-3.jpg", "2020-0129-105040_068403_movie_t-2.jpg", "2020-0129-105040_068403_movie_t-1.jpg", "2020-0129-105040_068403_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid yellow centerline stretches ahead between close buildings; the asphalt is dry and traffic remains light. On the left edge just ahead, a box truck is stopped with its rear door open while a person works at the tail, narrowing the ego lane. A cyclist wearing a white jacket rides away from the ego car along the left side of the road, staying near the curb but needing to pass the stopped truck, which may bring them closer to the ego path. A triangular children warning sign hangs above the roadway.", "hazard_reasoning": "A cyclist wearing a white jacket and cycling away from the ego car, on the left side of the road. The cyclist is passing close to a parked delivery truck that partially narrows the lane, so the driver should carefully manoeuvre around the cyclist to avoid collision."}
{"id": "train_06097", "split": "train", "clip_key": "titan_clip_700_000222_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_700_000222_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_700_000222_movie_t-3_augB1.jpg", "titan_clip_700_000222_movie_t-2_augB1.jpg", "titan_clip_700_000222_movie_t-1_augB1.jpg", "titan_clip_700_000222_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban back street with a single narrow lane and no center divider runs between dense shopfronts; the pavement is smooth and motor traffic is light with no vehicles ahead or oncoming. Two pedestrians with backpacks walk in the middle of the ego lane ahead, moving away from the car and effectively setting the pace, doing so as the roadside walk space is crowded with shop displays. Other pedestrians are visible along the sides but stay near the curb. Storefront signs, potted plants, and parked bicycles encroach on the edges, narrowing the corridor.", "hazard_reasoning": "There are two pedestrians carrying backpacks, walking in the middle of the road, away from the ego car, because the sidewalks are packed. The driver should slow down to avoid a potential collision with them."}
{"id": "train_06098", "split": "train", "clip_key": "titan_clip_1085_000042_movie", "source": {"subset": "titan", "scenario": "clip_1085", "frame": "000042"}, "frames": ["titan_clip_1085_000042_movie_t-3.jpg", "titan_clip_1085_000042_movie_t-2.jpg", "titan_clip_1085_000042_movie_t-1.jpg", "titan_clip_1085_000042_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down and watch for pedestrians", "environment_perception": "A narrow urban side street runs between tall buildings with no centerline and worn, patched pavement, and there is no visible vehicular traffic. On the left side of the road, a pedestrian in a black dress carrying a handbag walks away from the ego car along the edge, close to the travel path and may encroach into the lane. Farther ahead in the middle of the roadway, another pedestrian pulls a suitcase and walks away under an umbrella, occupying the lane and limiting the vehicle's approach. At a doorway on the right, a man steps toward the curb near a utility pole, standing at the edge and potentially entering the roadway. No salient signals or regulatory signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a black dress, carrying a handbag, and walking on the left side of the road, away from the ego car. This pedestrian may step into the vehicle's path unexpectedly, so the driver should slow down and watch for crossing pedestrians."}
{"id": "train_06099", "split": "train", "clip_key": "2020-0227-104226_022505_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "022505"}, "frames": ["2020-0227-104226_022505_movie_t-3.jpg", "2020-0227-104226_022505_movie_t-2.jpg", "2020-0227-104226_022505_movie_t-1.jpg", "2020-0227-104226_022505_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial runs under an elevated structure with guardrails and dry, well-marked pavement; traffic is light and moving steadily in the same direction. A white van ahead in the ego lane drives away from the ego car, gradually widening the gap and loosely setting the pace. A white sedan travels slightly ahead in the adjacent right lane at a similar speed, remaining parallel to the ego path. On the far left near a side street, a blue car is stopped at the curb and may merge into the roadway. Overhead blue direction signs indicate Route 20 toward Hachioji and Ohara.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. The vehicle ahead could brake suddenly or change speed unexpectedly, so the driver should stay alert and maintain a safe following distance."}
{"id": "train_06100", "split": "train", "clip_key": "titan_clip_1158_000564_movie", "source": {"subset": "titan", "scenario": "clip_1158", "frame": "000564"}, "frames": ["titan_clip_1158_000564_movie_t-3.jpg", "titan_clip_1158_000564_movie_t-2.jpg", "titan_clip_1158_000564_movie_t-1.jpg", "titan_clip_1158_000564_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "A narrow urban side street with a single shared lane and no median runs between buildings; the pavement looks smooth and traffic is light. Just ahead on the left, a white van is parked with its rear open while it is being unloaded, encroaching into the lane and slowing the ego vehicle. A worker stands at the open rear of this van in the roadway handling items, occupying part of the ego path. Farther ahead near the cross street, another small vehicle sits at the curb on the right, leaving limited room through the gap. A zebra crossing and a pedestrian crossing sign are visible at the intersection, and no moving oncoming traffic appears.", "hazard_reasoning": "There is a white van parked on the left side of the road, in front of the ego-car, because it is being unloaded. The unloading van and standing person reduce available roadway space, so the driver should manoeuvre carefully around the van to avoid collision."}
{"id": "train_06101", "split": "train", "clip_key": "titan_clip_688_000270_movie", "source": {"subset": "titan", "scenario": "clip_688", "frame": "000270"}, "frames": ["titan_clip_688_000270_movie_t-3.jpg", "titan_clip_688_000270_movie_t-2.jpg", "titan_clip_688_000270_movie_t-1.jpg", "titan_clip_688_000270_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for crossing pedestrian", "environment_perception": "An urban commercial street with closely spaced shops forms a narrow two-way road without a centerline; the pavement looks clean and traffic is light with no moving vehicles. Ahead in the ego lane, a pedestrian wearing a white shirt and black pants crosses from left to right in front of the car. On the near left edge, another pedestrian walks away along the roadway close to the travel lane. Farther ahead near the right side, a person walks along the curb in the same direction while remaining clear of the lane. Cones, stacked boxes near storefronts, and parked bicycles line the edges, slightly narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, crossing in front of the ego car from the left to right side of the lane. The driver should slow down to yield to the crossing pedestrian and avoid a potential collision."}
{"id": "train_06102", "split": "train", "clip_key": "2020-0210-155354_025385_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "025385"}, "frames": ["2020-0210-155354_025385_movie_t-3.jpg", "2020-0210-155354_025385_movie_t-2.jpg", "2020-0210-155354_025385_movie_t-1.jpg", "2020-0210-155354_025385_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with at least two lanes in the ego direction runs straight past mid-rise buildings; the pavement is clean and dry, and traffic moves slowly with queuing ahead. A black van stopped directly in front in the ego lane blocks the path because of congestion ahead. In the adjacent right lane, a large yellow dump truck sits slightly ahead and crawls forward, remaining parallel to the ego vehicle and narrowing the forward gap. Farther ahead, a line of vehicles fills both lanes at low speed, setting the pace.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary van ahead."}
{"id": "train_06103", "split": "train", "clip_key": "2020-0205-152530_028313_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "028313"}, "frames": ["2020-0205-152530_028313_movie_t-3.jpg", "2020-0205-152530_028313_movie_t-2.jpg", "2020-0205-152530_028313_movie_t-1.jpg", "2020-0205-152530_028313_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with smooth pavement and a curbside barrier; traffic is slow and queuing toward a signal. Ahead in the ego lane, a black van is stopped for the red light and directly constrains the ego car. To the left, a red hatchback in the adjacent lane creeps forward and then brakes as it reaches the same queue. Farther ahead in that left lane, several cars are closely spaced and remain stopped, forming a longer line than in the ego lane. The rightmost lane, designated for a right turn, is mostly clear near the camera. A traffic signal is visible ahead showing red above the junction.", "hazard_reasoning": "There is a black van stopped in the ego lane, because of the red traffic light, in front of the ego car. The ego-vehicle must stop to avoid colliding with the stationary van at the red light."}
{"id": "train_06104", "split": "train", "clip_key": "titan_clip_594_000072_movie", "source": {"subset": "titan", "scenario": "clip_594", "frame": "000072"}, "frames": ["titan_clip_594_000072_movie_t-3.jpg", "titan_clip_594_000072_movie_t-2.jpg", "titan_clip_594_000072_movie_t-1.jpg", "titan_clip_594_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow street lined with shops has smooth dry pavement, no center divider, and very light vehicular traffic. Two pedestrians ahead in the ego lane, a man in light clothing beside a woman in a white skirt, walk away near the center and occupy the vehicle's path. Farther ahead, a man in a blue shirt and brown pants walks in the middle of the road away from the ego car, continuing in the travel lane and potentially affecting the approach. Another pedestrian keeps to the right-side curb farther up the street and moves away. A parking sign is visible on the right, and parked delivery bicycles along the left curb encroach slightly into the lane.", "hazard_reasoning": "There is a man in a blue shirt and brown pants, walking in the middle of the road, away from the ego car. The pedestrian's position in the lane increases collision risk if the vehicle maintains its speed, so the driver should slow down."}
{"id": "train_06105", "split": "train", "clip_key": "2020-0225-102455_026237_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "026237"}, "frames": ["2020-0225-102455_026237_movie_t-3.jpg", "2020-0225-102455_026237_movie_t-2.jpg", "2020-0225-102455_026237_movie_t-1.jpg", "2020-0225-102455_026237_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with no physical median and smooth pavement carries moderate traffic that bunches at an intersection. A silver sedan directly ahead in the ego lane is stopped at the stop line because the signal ahead shows red, holding the ego vehicle. Farther ahead in the left lane, a large box truck is stationary with its rear ramp down, occupying that lane and constraining space next to the curb. On the right near the intersection, a white delivery truck waits at the curb and remains outside the ego path. Overhead traffic lights are red for the ego direction, and a 50 speed limit sign stands on the left streetside.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car in the ego lane, because of the red traffic light. The driver should stop to avoid colliding with the halted vehicle and respect the traffic signal under the current red light."}
{"id": "train_06106", "split": "train", "clip_key": "2020-0218-103119_013745_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "013745"}, "frames": ["2020-0218-103119_013745_movie_t-3.jpg", "2020-0218-103119_013745_movie_t-2.jpg", "2020-0218-103119_013745_movie_t-1.jpg", "2020-0218-103119_013745_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain a safe distance", "environment_perception": "An urban multi-lane arterial with a right-side merge taper has dry, smooth pavement and moderate, steady traffic. Ahead in the ego lane, a white hatchback slows, briefly constraining the ego vehicle. To the right-front, a white van in the adjacent lane continues straight through the merge area without encroaching on the ego lane. Farther ahead in the right lane, a red truck proceeds at a steady pace in the same direction. A circular roadside sign on the left shows 50. Fenced sidewalks on both sides carry a few pedestrians and cyclists who remain separated from the roadway.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, in front of the ego car. Because the leading vehicle is decelerating, you must reduce speed to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_06107", "split": "train", "clip_key": "2020-0205-152530_040005_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "040005"}, "frames": ["2020-0205-152530_040005_movie_t-3.jpg", "2020-0205-152530_040005_movie_t-2.jpg", "2020-0205-152530_040005_movie_t-1.jpg", "2020-0205-152530_040005_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial with multiple same-direction lanes is separated from oncoming traffic by a wide painted median; the asphalt looks smooth and traffic is moderate and flowing. A black hatchback directly ahead moves from the ego lane into the adjacent right lane, cutting across in front and briefly influencing the ego car's pace. Farther ahead in the ego lane, a white van proceeds straight at a steady speed, maintaining spacing within the flow. On the opposite side to the right, a large bus and several cars travel toward the camera in their lanes, remaining separated by the median and not interacting with the ego path.", "hazard_reasoning": "There is a black hatchback lane changing in front of the ego car, from the ego lane to the right lane. The driver should follow the vehicle ahead to maintain a safe distance and avoid a side collision during its maneuver."}
{"id": "train_06108", "split": "train", "clip_key": "2020-0205-103411_076714_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-103411_076714_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-103411_076714_movie_t-3_augB1.jpg", "2020-0205-103411_076714_movie_t-2_augB1.jpg", "2020-0205-103411_076714_movie_t-1_augB1.jpg", "2020-0205-103411_076714_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a painted median separates oncoming traffic to the right; the pavement looks clean and dry and traffic is moderate. A black truck ahead in the ego lane slows, constraining the ego vehicle's pace. To the left, a white sedan follows a tall box truck slightly ahead in the adjacent lane and continues straight, limiting space to merge left. Oncoming cars and a small van travel in the opposite lanes to the right beyond the median and pass without conflict. An overhead gantry is present and a dedicated right-turn lane runs along the median, with no active signals visible.", "hazard_reasoning": "A black truck is slowing in front of the ego car in the ego lane. Driver should slow down to maintain a safe distance behind the decelerating truck."}
{"id": "train_06109", "split": "train", "clip_key": "2020-0212-102546_023987_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "023987"}, "frames": ["2020-0212-102546_023987_movie_t-3.jpg", "2020-0212-102546_023987_movie_t-2.jpg", "2020-0212-102546_023987_movie_t-1.jpg", "2020-0212-102546_023987_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid colliding with stopped vehicle", "environment_perception": "An urban multi-lane arterial runs between midrise buildings, with two lanes in the ego direction and a low hedge median separating oncoming traffic; the pavement looks smooth and traffic is queued at a signal. A red SUV directly ahead in the ego lane is stopped, holding the ego car because the light ahead is red. Farther ahead in the adjacent left lane, a white box truck also waits, contributing to the short queue that sets the pace. On the opposite side to the right, oncoming cars pass steadily behind the median without interacting with the ego lane.", "hazard_reasoning": "There is a red SUV stopped in the ego lane, in front of the ego car, because of the red traffic lights. The driver needs to stop to avoid rear-ending the stationary vehicle ahead, ensuring safe distance at the intersection."}
{"id": "train_06110", "split": "train", "clip_key": "2020-0218-103119_046531_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "046531"}, "frames": ["2020-0218-103119_046531_movie_t-3.jpg", "2020-0218-103119_046531_movie_t-2.jpg", "2020-0218-103119_046531_movie_t-1.jpg", "2020-0218-103119_046531_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain a safe following distance.", "environment_perception": "An urban two-way road with two same-direction lanes and painted centerlines stretches ahead on dry pavement with moderate traffic. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. In the adjacent right lane, a small kei truck travels straight at a similar speed, remaining in its lane without signaling. In the opposite lanes to the right, a large coach bus approaches through the intersection, continuing oncoming and separated by the center lines.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane. The truck is reducing speed suddenly, so you should slow down to maintain a safe following distance."}
{"id": "train_06111", "split": "train", "clip_key": "titan_clip_245_000132_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_245_000132_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_245_000132_movie_t-3_augB1.jpg", "titan_clip_245_000132_movie_t-2_augB1.jpg", "titan_clip_245_000132_movie_t-1_augB1.jpg", "titan_clip_245_000132_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "An urban two-way street runs between tall buildings, with one narrow lane per direction, no median, and smooth pavement; traffic is light with a few same-direction cars ahead moving steadily. Ahead on the left side of the roadway, a pedestrian wearing a white shirt and black pants and carrying a handbag walks away from the ego car along the lane, constraining its pace. Farther ahead in the ego lane, a small van followed by a sedan travels slowly toward the next block, keeping spacing tight. On the right sidewalk, a group of pedestrians, some with umbrellas, walks parallel to traffic near the curb and may step into the lane. Parked cars line the left curb, narrowing the usable space.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a handbag, walking on the left side of the road, away from the ego car. Therefore, the driver should be aware of the pedestrian to anticipate any unexpected crossing into the lane."}
{"id": "train_06112", "split": "train", "clip_key": "2020-0204-150838_005637_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "005637"}, "frames": ["2020-0204-150838_005637_movie_t-3.jpg", "2020-0204-150838_005637_movie_t-2.jpg", "2020-0204-150838_005637_movie_t-1.jpg", "2020-0204-150838_005637_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the sedan's lane change", "environment_perception": "An urban arterial with two same-direction lanes on the left and opposing lanes to the right is divided by a painted diagonal median; the asphalt looks dry and slightly worn, and traffic flows at a moderate pace. A brown sedan ahead slightly left moves from the left lane into the right lane in front of the ego car, changing lanes and taking the space in that adjacent lane. Farther ahead in the right lane, a white van continues straight at a steady speed, setting the pace for following traffic. In the opposing lanes to the right, a black taxi approaches toward the camera, remaining separated by the painted divider and passing without conflict.", "hazard_reasoning": "There is a brown sedan moving from the left lane into the right lane in front of the ego car, because the sedan is changing lanes. The driver should be aware of this maneuver to anticipate potential conflicts and maintain safe distance."}
{"id": "train_06113", "split": "train", "clip_key": "2020-0227-104226_027027_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-104226_027027_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-104226_027027_movie_t-3_augB1.jpg", "2020-0227-104226_027027_movie_t-2_augB1.jpg", "2020-0227-104226_027027_movie_t-1_augB1.jpg", "2020-0227-104226_027027_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene is an urban two-way road with a single lane each direction, divided by a solid centerline and flanked by guardrails; the pavement is dry and smooth and traffic is moderate with a slow patch ahead. A white box truck travels ahead in the ego lane and slows because congestion forms farther ahead, constraining the ego car's pace. An oncoming black sedan approaches in the opposite lane to the right and passes steadily without encroaching. Farther ahead, a short line of same-direction vehicles, mostly trucks, creeps along and causes the bottleneck.", "hazard_reasoning": "There is a white truck slowing down ahead of the ego-car, in the ego lane, because of traffic congestion ahead. Because the white truck is decelerating due to congestion, the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_06114", "split": "train", "clip_key": "2020-0228-102841_004467_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "004467"}, "frames": ["2020-0228-102841_004467_movie_t-3.jpg", "2020-0228-102841_004467_movie_t-2.jpg", "2020-0228-102841_004467_movie_t-1.jpg", "2020-0228-102841_004467_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of construction cones ahead.", "environment_perception": "An urban junction beside an elevated railway comes into view on a two-way street with fresh pavement; the forward lanes are closed, so traffic is light. Ahead across the ego path, a white van moves slowly rightward behind the barricades, remaining outside the ego lane. On the left sidewalk, several pedestrians mill near storefronts without stepping into the roadway. Rows of striped barriers and cones indicate construction in front of the ego car and completely block through movement. A compact excavator and stacked barricades occupy the near right edge as part of the work zone.", "hazard_reasoning": "There is construction work in front of the ego car, indicated by a cone. The driver should be aware of the construction cones ahead, as the narrowed lane increases the risk of sideswipe or collision if not navigated carefully."}
{"id": "train_06115", "split": "train", "clip_key": "2020-0127-132751_079581_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "079581"}, "frames": ["2020-0127-132751_079581_movie_t-3.jpg", "2020-0127-132751_079581_movie_t-2.jpg", "2020-0127-132751_079581_movie_t-1.jpg", "2020-0127-132751_079581_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with a narrow raised median and smooth pavement is shown, and the ego vehicle is stopped at a signalized crosswalk where the light ahead is red; overall traffic is light with a few oncoming vehicles in the opposite lanes beyond the median. Ahead, an adult with a stroller and a small child cross left to right in front of the car, occupying the crosswalk and controlling the stop. From the right, a cyclist in a red jacket rides across the pedestrian crossing toward the left while the red signal holds the ego. In the opposite lanes, a bus and a car approach near the intersection but remain separated from the ego path by the median.", "hazard_reasoning": "There is a cyclist wearing a red jacket, cycling across a pedestrian crossing, from the right side to the left side, because of a red traffic light. Driver should stop as the cyclist may enter the path unexpectedly, posing a collision risk."}
{"id": "train_06116", "split": "train", "clip_key": "2020-0207-151349_002703_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_002703_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_002703_movie_t-3_augB1.jpg", "2020-0207-151349_002703_movie_t-2_augB1.jpg", "2020-0207-151349_002703_movie_t-1_augB1.jpg", "2020-0207-151349_002703_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban arterial with two lanes in the ego direction runs straight, divided from oncoming lanes on the right by a raised median; the pavement looks smooth and traffic moves at a moderate, steady pace. A silver van directly ahead in the ego left lane proceeds straight at a modest speed and sets the pace. Farther ahead, a small white car in the same lane continues straight with steady spacing. On the opposite carriageway, a truck approaches beyond the median without affecting the ego path. Parked vans line the left curb near the camera, narrowing the edge of the lane, and overhead direction signs are visible in the distance.", "hazard_reasoning": "There is a cyclist standing in the left lane, because of parked cars. The cyclist obstructs the driving path and requires a careful manoeuvre to avoid a collision."}
{"id": "train_06117", "split": "train", "clip_key": "titan_clip_514_000372_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_514_000372_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_514_000372_movie_t-3_augB1.jpg", "titan_clip_514_000372_movie_t-2_augB1.jpg", "titan_clip_514_000372_movie_t-1_augB1.jpg", "titan_clip_514_000372_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "A narrow urban commercial street with a single shared lane and no center line runs ahead; the cobblestone-like pavement is patchy and traffic is very light. In the middle of the road ahead, a lady in a white T-shirt carrying a handbag walks away from the ego vehicle along the lane, occupying the path and constraining the pace. On the left near a shopfront, a pedestrian stands close to the curb and may step into the lane. Farther ahead near the buildings, another pedestrian crosses from right to left across the ego path. Parked bicycles and a scooter line the right curb, slightly narrowing the usable lane.", "hazard_reasoning": "There is a lady wearing a white t-shirt, carrying a handbag and walking away from the ego car in the middle of the road. The driver must yield because the pedestrian is crossing the vehicle's path and has limited visibility due to the shutter obstruction.\\n"}
{"id": "train_06118", "split": "train", "clip_key": "2020-0204-150838_041213_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "041213"}, "frames": ["2020-0204-150838_041213_movie_t-3.jpg", "2020-0204-150838_041213_movie_t-2.jpg", "2020-0204-150838_041213_movie_t-1.jpg", "2020-0204-150838_041213_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road with left-hand traffic approaches a wide signalized intersection; the pavement is dry and smooth, and a narrow median with flexible posts separates directions while overall flow is moderate and steady. A white van ahead in the ego lane accelerates away through the green signal, opening a gap to the ego vehicle. A smaller white van slightly ahead to the left continues straight through the junction at a similar pace. In the oncoming lanes to the right, several cars approach and slow near the crosswalk. Pedestrians gather on both sidewalks at the corners, standing near the crosswalks without stepping into the road.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06119", "split": "train", "clip_key": "2020-0129-105040_095440_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "095440"}, "frames": ["2020-0129-105040_095440_movie_t-3.jpg", "2020-0129-105040_095440_movie_t-2.jpg", "2020-0129-105040_095440_movie_t-1.jpg", "2020-0129-105040_095440_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction runs alongside a raised median with fencing; the dry pavement is in good condition and traffic is moderate, queuing at a signalized intersection ahead. Directly ahead in the ego lane, a small white truck is stopped, holding the ego car at the back of the queue. Farther ahead in the same lane, a large blue cargo truck also waits near the intersection, extending the queue and constraining progress. In the adjacent left lane, a black sedan and other cars creep forward past the ego vehicle, limiting chances to change lanes. Traffic lights are visible over the junction, and no obstacles or work zones appear.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The driver should stop to avoid a rear-end collision and comply with the red light ahead."}
{"id": "train_06120", "split": "train", "clip_key": "titan_clip_182_000216_movie", "source": {"subset": "titan", "scenario": "clip_182", "frame": "000216"}, "frames": ["titan_clip_182_000216_movie_t-3.jpg", "titan_clip_182_000216_movie_t-2.jpg", "titan_clip_182_000216_movie_t-1.jpg", "titan_clip_182_000216_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian approaching", "environment_perception": "A narrow urban alley in Japan serves as a single shared lane with no centerline; the asphalt looks worn and patchy, and traffic is light with no moving vehicles visible. Buildings crowd the roadway and objects at the edges, including several parked bicycles and planters, narrow the usable lane. On the left ahead, a pedestrian wearing a white top and black pants walks toward the ego vehicle along the roadway edge, occupying part of the lane and close to the ego path. No other road users move in the scene, and no traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a white top and black pants, walking on the left side of the road, towards the ego car. You should be aware of this pedestrian as they are approaching the vehicle and may enter its path."}
{"id": "train_06121", "split": "train", "clip_key": "titan_clip_95_000426_movie", "source": {"subset": "titan", "scenario": "clip_95", "frame": "000426"}, "frames": ["titan_clip_95_000426_movie_t-3.jpg", "titan_clip_95_000426_movie_t-2.jpg", "titan_clip_95_000426_movie_t-1.jpg", "titan_clip_95_000426_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban side street with a single shared lane and no median runs between tall buildings; the pavement is worn, and traffic is light and slow. On the right, a red truck is parked while workers handle crates beside it, occupying part of the lane and constraining the ego vehicle's path. Ahead in the same direction, a white van moves slowly near the center of the lane as it passes the truck, temporarily setting the pace. Farther ahead, a pedestrian walks along the middle of the roadway away from the camera, remaining in the ego path and limiting advance. Bicycles line the left curb and stacks of crates sit on the right, further narrowing the roadway.", "hazard_reasoning": "There is a red truck parked on the right side of the road. The driver should manoeuvre carefully around the truck to avoid striking it as it partially obstructs the driving lane."}
{"id": "train_06122", "split": "train", "clip_key": "2020-0131-135401_082429_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "082429"}, "frames": ["2020-0131-135401_082429_movie_t-3.jpg", "2020-0131-135401_082429_movie_t-2.jpg", "2020-0131-135401_082429_movie_t-1.jpg", "2020-0131-135401_082429_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction runs between mid-rise buildings, with a solid median barrier on the right separating oncoming traffic; the pavement is clean and traffic is slow due to a downstream queue. A white van directly ahead in the ego lane is stopped because of traffic congestion and controls the ego vehicle's pace. In the adjacent left lane, a small white car just ahead creeps forward, limiting chances to merge around the blockage. Beyond the median on the right, trucks travel the opposite way at a steady pace but remain segregated from the ego lane. Overhead guide signs span the roadway.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of traffic congestion ahead. The stopped van indicates slow or halted traffic ahead, so the driver should stop to maintain a safe distance and avoid collision."}
{"id": "train_06123", "split": "train", "clip_key": "2020-0210-155354_003394_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "003394"}, "frames": ["2020-0210-155354_003394_movie_t-3.jpg", "2020-0210-155354_003394_movie_t-2.jpg", "2020-0210-155354_003394_movie_t-1.jpg", "2020-0210-155354_003394_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian crossing", "environment_perception": "An urban two-way street with one lane each direction, no median, and smooth pavement is shown, with moderate flow that slows at a zebra crossing. A white car ahead in the ego lane reduces speed at the crosswalk, constraining the ego vehicle's pace. At the left curb, a pedestrian in black pants waits at the pedestrian crossing and may step into the ego lane. On the right, an oncoming black SUV approaches steadily in its lane and continues through. Several other pedestrians remain on the sidewalks near the shops.", "hazard_reasoning": "There is a pedestrian wearing black pants, waiting to cross at a pedestrian crossing. The pedestrian may step into the vehicle's path unexpectedly, so the driver should be cautious to avoid a collision."}
{"id": "train_06124", "split": "train", "clip_key": "titan_clip_364_000318_movie", "source": {"subset": "titan", "scenario": "clip_364", "frame": "000318"}, "frames": ["titan_clip_364_000318_movie_t-3.jpg", "titan_clip_364_000318_movie_t-2.jpg", "titan_clip_364_000318_movie_t-1.jpg", "titan_clip_364_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban residential street without a centerline passes between close buildings, the asphalt in good condition and traffic light. A 20 speed limit sign stands on the left, and a red mini truck is parked tight to the left curb, narrowing the lane. Ahead on the right edge, a man wearing brown trousers, a grey T-shirt, black shoes, and a backpack walks toward the ego vehicle and may encroach into the lane. Another man near the center also approaches on foot, reducing available space ahead. A pedestrian with an umbrella and backpack walks away along the left side. Cones and planters line the right shoulder; no moving vehicles are present.", "hazard_reasoning": "There is a man wearing a pair of brown trousers, a grey T-shirt, black shoes, carrying a backpack, walking on the right side of the road towards the ego car. Slow down because the pedestrian may step off the curb into your path unexpectedly."}
{"id": "train_06125", "split": "train", "clip_key": "2020-0220-102630_071074_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "071074"}, "frames": ["2020-0220-102630_071074_movie_t-3.jpg", "2020-0220-102630_071074_movie_t-2.jpg", "2020-0220-102630_071074_movie_t-1.jpg", "2020-0220-102630_071074_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop now to maintain safe distance", "environment_perception": "An urban arterial with three same-direction lanes has smooth asphalt and heavy, queued traffic at an intersection. Directly ahead in the ego lane, a white van is stopped because the traffic light ahead shows red, holding the ego vehicle in place. In the right lane slightly ahead, a black SUV waits at a standstill parallel to the ego vehicle, matching its lack of movement. In the left lane ahead, a black minivan is also stopped in line, closing the space beside the ego lane and leaving little room to change lanes. The signal heads above the junction display red for this approach.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of a red traffic light ahead. Stop now to comply with the red light and maintain a safe distance."}
{"id": "train_06126", "split": "train", "clip_key": "2020-0228-150133_038503_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "038503"}, "frames": ["2020-0228-150133_038503_movie_t-3.jpg", "2020-0228-150133_038503_movie_t-2.jpg", "2020-0228-150133_038503_movie_t-1.jpg", "2020-0228-150133_038503_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial has two same-direction lanes with a metal fence median on the right separating oncoming traffic, and the dry pavement appears smooth. Traffic is heavy and slow. A gray sedan directly ahead in the ego lane slows while moving away because of congestion ahead, constraining the ego car's pace. Farther ahead in the same lane, a red van also slows behind a queue. In the adjacent left lane, a white hatchback alongside creeps forward parallel to the ego vehicle and remains in its lane. Overhead traffic signals are visible at the upcoming intersection.", "hazard_reasoning": "There is a gray sedan slowing in front of the ego car, moving away from the ego car, in the ego lane, because of traffic congestion ahead. The driver should follow the vehicle ahead to maintain a safe following distance and avoid collision due to slowing traffic."}
{"id": "train_06127", "split": "train", "clip_key": "titan_clip_1158_000048_movie", "source": {"subset": "titan", "scenario": "clip_1158", "frame": "000048"}, "frames": ["titan_clip_1158_000048_movie_t-3.jpg", "titan_clip_1158_000048_movie_t-2.jpg", "titan_clip_1158_000048_movie_t-1.jpg", "titan_clip_1158_000048_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped van ahead", "environment_perception": "A narrow urban two-way street with no centerline runs between close buildings, the ego vehicle proceeding on smooth pavement with light traffic. A white van ahead on the left side is stopped at a crosswalk, temporarily blocking the ego lane and setting the pace. A white car is parked in a recessed garage on the left near the foreground, stationary and not encroaching on the roadway. A parking sign stands on the right side, and a 30 marking is painted on the pavement. No other moving vehicles or pedestrians are visible, and there are no dividers or unusual obstacles.", "hazard_reasoning": "There is a white van stopped on the left side of the street, because of the crosswalk in front of it. The stopped van could impede your lane and obscure pedestrians at the crosswalk, so you should be aware of potential pedestrians stepping onto the road."}
{"id": "train_06128", "split": "train", "clip_key": "2020-0210-101957_079392_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "079392"}, "frames": ["2020-0210-101957_079392_movie_t-3.jpg", "2020-0210-101957_079392_movie_t-2.jpg", "2020-0210-101957_079392_movie_t-1.jpg", "2020-0210-101957_079392_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with a single narrow lane each direction curves gently right, bordered by shops and metal railings; pavement is smooth and traffic is light. A yellow truck ahead in the ego lane drives away while following the right bend, moving steadily and effectively setting the ego car's pace. The oncoming lane appears clear in view. A large 40 speed marking is painted on the roadway. Railings closely line both sides and several parked bicycles sit on the right by the storefronts, but they remain outside the lane.", "hazard_reasoning": "There is a yellow truck driving in the ego lane away from the ego car. The truck ahead can block your view around the curve, so you should be aware of any hidden obstacles or changes in traffic beyond it."}
{"id": "train_06129", "split": "train", "clip_key": "2020-0226-140503_071957_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "071957"}, "frames": ["2020-0226-140503_071957_movie_t-3.jpg", "2020-0226-140503_071957_movie_t-2.jpg", "2020-0226-140503_071957_movie_t-1.jpg", "2020-0226-140503_071957_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized arterial with two lanes in the ego direction and no median appears wet, and traffic is queued and slow. A black hatchback ahead in the ego lane is stopped for a red light, holding the ego car. A large flatbed truck stands slightly ahead in the adjacent right lane, also waiting at the light and narrowing space beside the ego lane. A motor scooter to the right of the hatchback filters forward between the truck and the car toward the stop line, close alongside the ego lane. The traffic signal ahead shows red while cross-street traffic proceeds.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The red light requires stopping to avoid rear-ending the stationary vehicle and ensure safety at the intersection."}
{"id": "train_06130", "split": "train", "clip_key": "titan_clip_243_000240_movie", "source": {"subset": "titan", "scenario": "clip_243", "frame": "000240"}, "frames": ["titan_clip_243_000240_movie_t-3.jpg", "titan_clip_243_000240_movie_t-2.jpg", "titan_clip_243_000240_movie_t-1.jpg", "titan_clip_243_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street runs between mid-rise buildings with no center line or median and smooth dry pavement; traffic is light. On the right side ahead, a pedestrian wearing a green cap pushes a green trolley toward the ego vehicle along the roadway because there is no sidewalk, walking near the curb and possibly edging into the ego lane. Far ahead in the same direction, a small white car moves away near the center of the lane at a slow pace. In the opposite direction, a couple of vans approach in the oncoming lane farther down the street, tightening space for passing.", "hazard_reasoning": "There's a pedestrian wearing green cap, pushing green trolley, walking toward the ego car on the right side of the road, because there's no sidewalk. The pedestrian is encroaching into the driving lane, so the driver must adjust path to avoid a collision."}
{"id": "train_06131", "split": "train", "clip_key": "2020-0205-103411_119230_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "119230"}, "frames": ["2020-0205-103411_119230_movie_t-3.jpg", "2020-0205-103411_119230_movie_t-2.jpg", "2020-0205-103411_119230_movie_t-1.jpg", "2020-0205-103411_119230_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road with smooth asphalt runs straight beneath pedestrian footbridges, and traffic queues at an intersection. A black minivan is stopped directly ahead in the ego lane because the light ahead is red, holding the ego car in line. To the right, a large concrete mixer truck waits slightly ahead in the adjacent lane, limiting forward visibility and advancing only with the queue. Ahead-left, a small white car in the left lane is also stopped alongside, matching the pace of the minivan.", "hazard_reasoning": "There is a black minivan stopped in the ego lane in front of the ego car, because of the red traffic light. You need to stop to maintain a safe distance and avoid rear-ending the stationary vehicle."}
{"id": "train_06132", "split": "train", "clip_key": "2020-0203-114632_071239_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "071239"}, "frames": ["2020-0203-114632_071239_movie_t-3.jpg", "2020-0203-114632_071239_movie_t-2.jpg", "2020-0203-114632_071239_movie_t-1.jpg", "2020-0203-114632_071239_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated two-way road with one lane each direction passes under an overpass, divided by a solid orange center line; the pavement is dry but worn and traffic is moderate with a brief slowdown ahead. A gray van directly ahead in the ego lane slows because a truck farther ahead is slowing, which constrains the ego car's pace. Oncoming trucks and cars travel in the opposing lane to the right, separated by the center line and a railing, and pass without conflict. A left-curve warning sign on the overhead gantry and blue direction boards are visible as the road bends gently left beside a noise barrier.", "hazard_reasoning": "There is a gray van slowing in the ego lane, in front of the ego car, because of truck slowing ahead. The driver should slow down to maintain a safe distance and avoid a collision due to the sudden deceleration of vehicles ahead."}
{"id": "train_06133", "split": "train", "clip_key": "titan_clip_658_000336_movie", "source": {"subset": "titan", "scenario": "clip_658", "frame": "000336"}, "frames": ["titan_clip_658_000336_movie_t-3.jpg", "titan_clip_658_000336_movie_t-2.jpg", "titan_clip_658_000336_movie_t-1.jpg", "titan_clip_658_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street with no centerline runs between shops and a fenced park; the asphalt is smooth and traffic is light with no oncoming vehicles. Ahead in the ego lane, two pedestrians cross from right to left: an adult in a gray shirt carrying a handbag holds hands with a child in a blue shirt, moving steadily across the vehicle's path and setting the ego car's pace. White vans are parked close to both curbs-one ahead on the left facing the same direction and another on the right facing the ego-narrowing the available lane and creating a brief pinch point. No traffic signals are visible.", "hazard_reasoning": "There are two pedestrians in front of the ego car, wearing a handbag, a gray shirt, and a blue shirt, crossing the road to the left side. The driver should slow down because the pedestrians are crossing directly in front of the vehicle and may step into its path unexpectedly."}
{"id": "train_06134", "split": "train", "clip_key": "2020-0218-103119_027029_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "027029"}, "frames": ["2020-0218-103119_027029_movie_t-3.jpg", "2020-0218-103119_027029_movie_t-2.jpg", "2020-0218-103119_027029_movie_t-1.jpg", "2020-0218-103119_027029_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A busy urban two-way street with multiple lanes and painted red bus-lane sections runs between tall buildings; pavement is good and traffic flows steadily. A white box truck ahead in the ego lane proceeds straight through the green signal, setting the pace for the ego vehicle. To the right, an oncoming flatbed truck moves past in its opposite-direction lane, separated by painted markings and posing no immediate conflict. Farther ahead in the opposing stream, several cars continue through the junction in their lanes. On the left sidewalk near the zebra crossing, two pedestrians walk and wait at the corner without entering the roadway. The overhead traffic light shows green for the ego direction, and no obstacles or work zones appear.", "hazard_reasoning": "There is a white truck driving in the ego lane, in front of the ego car, because of green traffic lights. Maintaining a safe following distance allows the driver to react to any sudden braking or signal changes by the truck."}
{"id": "train_06135", "split": "train", "clip_key": "2020-0226-140503_085788_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "085788"}, "frames": ["2020-0226-140503_085788_movie_t-3.jpg", "2020-0226-140503_085788_movie_t-2.jpg", "2020-0226-140503_085788_movie_t-1.jpg", "2020-0226-140503_085788_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial carries slow traffic toward a signalized intersection; pavement is dry and painted center lines divide opposing flows. A white hatchback directly ahead in the ego lane creeps forward while straddling the center markings, moving slowly because it is waiting to make a right turn, and it sets the ego car's pace. To the right, a rider on a white scooter overtakes in the adjacent lane and continues straight past the ego vehicle near the crosswalk. Ahead-left, a large concrete mixer truck proceeds through the junction in the neighboring lane, partially blocking the view ahead. Standard traffic lights and crosswalks are visible at the intersection.", "hazard_reasoning": "There's a white hatchback moving slowly forward in front of the ego car, because it is waiting to make a right turn. The vehicle's reduced speed and anticipation of a turn may require the driver to decelerate promptly to avoid collision, so the driver should prepare to slow down."}
{"id": "train_06136", "split": "train", "clip_key": "2020-0218-103119_052520_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "052520"}, "frames": ["2020-0218-103119_052520_movie_t-3.jpg", "2020-0218-103119_052520_movie_t-2.jpg", "2020-0218-103119_052520_movie_t-1.jpg", "2020-0218-103119_052520_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction runs beneath elevated structures, divided from oncoming lanes on the right by a metal guardrail; the pavement is dry and slightly worn, and traffic is moderate. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. In the adjacent left lane, a red SUV followed by a red sedan runs slightly ahead and continues straight at similar speed, limiting room to merge. Beyond the guardrail, oncoming vehicles including a white van move past in the opposite flow.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The truck's reduced speed requires the driver to slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_06137", "split": "train", "clip_key": "titan_clip_272_000450_movie", "source": {"subset": "titan", "scenario": "clip_272", "frame": "000450"}, "frames": ["titan_clip_272_000450_movie_t-3.jpg", "titan_clip_272_000450_movie_t-2.jpg", "titan_clip_272_000450_movie_t-1.jpg", "titan_clip_272_000450_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban two-way shopping street with a single lane in each direction and no median appears narrow with worn pavement, and traffic is light with no moving vehicles near the ego car. Ahead on the right, a gray box truck is parked as it is being unloaded, its rear open and liftgate extended into the roadway, narrowing the ego lane and constraining passage. On the left foreground, a man on the sidewalk walks while looking at his phone and drifts toward the curb, which may bring him into the ego lane. Farther ahead, several pedestrians walk along the middle-right of the street in the same direction, occupying part of the travel way. A large 30 speed marking is visible on the pavement.", "hazard_reasoning": "There is a gray truck parked on the right side of the road, because it is being unloaded. This creates a blind spot and restricts the available driving lane, so the driver should manoeuvre carefully around it to avoid collision and maintain safe clearance."}
{"id": "train_06138", "split": "train", "clip_key": "titan_clip_367_000144_movie", "source": {"subset": "titan", "scenario": "clip_367", "frame": "000144"}, "frames": ["titan_clip_367_000144_movie_t-3.jpg", "titan_clip_367_000144_movie_t-2.jpg", "titan_clip_367_000144_movie_t-1.jpg", "titan_clip_367_000144_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van.", "environment_perception": "A compact urban shopping street appears, with the ego-vehicle proceeding along a narrow two-way road without a centerline, bordered by raised sidewalks and guardrails; the asphalt is dry and traffic is light with no moving vehicles visible. Ahead on the right, a blue van is parked for unloading, its rear open with packages set out, partially narrowing the lane. A worker stands at the rear of the van handling items close to the travel lane, keeping near the ego path. A pedestrian on the right sidewalk walks away past storefronts near the van. No signals or posted speeds are prominent, and there are no oncoming vehicles.", "hazard_reasoning": "There is a blue van parked on the right side of the road, because it is being unloaded. Driver should manoeuvre carefully around the van to avoid collision due to reduced lateral space."}
{"id": "train_06139", "split": "train", "clip_key": "2020-0217-144444_012193_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "012193"}, "frames": ["2020-0217-144444_012193_movie_t-3.jpg", "2020-0217-144444_012193_movie_t-2.jpg", "2020-0217-144444_012193_movie_t-1.jpg", "2020-0217-144444_012193_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van", "environment_perception": "An urban street with tall buildings curves gently right, appearing as a single left-hand traffic lane with no median and smooth pavement; traffic is light. A gray van is parked ahead along the left side partly in the ego lane, narrowing the passage. Farther ahead in the same direction, a small white van slows as it approaches the obstruction, momentarily controlling the pace. On the left sidewalk by the shops, a couple of pedestrians stand and walk along the railings without entering the roadway. Low hedges and trees border the right edge of the road, and no salient signals or speed signs are prominent.", "hazard_reasoning": "There is a gray van parked in the ego lane, on the left side of the road. The parked van blocks your lane and reduces maneuvering space, so you should carefully manoeuvre around it to avoid collision."}
{"id": "train_06140", "split": "train", "clip_key": "titan_clip_550_000576_movie", "source": {"subset": "titan", "scenario": "clip_550", "frame": "000576"}, "frames": ["titan_clip_550_000576_movie_t-3.jpg", "titan_clip_550_000576_movie_t-2.jpg", "titan_clip_550_000576_movie_t-1.jpg", "titan_clip_550_000576_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban scene on a narrow two-way road with no median, dry asphalt, and light traffic; the road bends right just beyond a marked crosswalk. Ahead at the crosswalk, a pedestrian wearing a shoulder bag, a black T-shirt, and black pants walks from right to left in front of the ego-vehicle, occupying its path. Another pedestrian from the left continues crossing toward the right in the ego lane, further constraining pace. Two people stand on the right curb at the crossing, waiting to cross and close to the edge of the lane. A white van beyond the crosswalk is stopped near the curb by the bend, partly blocking the forward view. A pedestrian crossing sign and a no-parking sign are visible on the left.", "hazard_reasoning": "There is a pedestrian, wearing a shoulder bag, a black t-shirt, and black pants, crossing the street at a pedestrian crosswalk, in front of the ego-car, from the right side to the left side of the street. The pedestrian is entering the vehicle's path at the crosswalk, so the driver must stop to prevent a collision."}
{"id": "train_06141", "split": "train", "clip_key": "2020-0205-152530_019554_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "019554"}, "frames": ["2020-0205-152530_019554_movie_t-3.jpg", "2020-0205-152530_019554_movie_t-2.jpg", "2020-0205-152530_019554_movie_t-1.jpg", "2020-0205-152530_019554_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a planted median approaches a wide signalized intersection; the pavement looks smooth and traffic is moderate with steady flow. A silver kei van directly ahead in the leftmost ego lane moves slowly into the intersection, setting the pace. In the adjacent right same-direction lane, a small dark car slightly farther ahead continues straight through the junction, remaining parallel to the ego vehicle. On the far side of the median, oncoming cars proceed through their lanes without interacting with the ego path. At the near-left corner, a group of pedestrians stands by bicycle racks at the crosswalk, waiting to cross and potentially entering the ego lane when permitted. Overhead traffic lights are visible above the junction.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06142", "split": "train", "clip_key": "titan_clip_787_000276_movie", "source": {"subset": "titan", "scenario": "clip_787", "frame": "000276"}, "frames": ["titan_clip_787_000276_movie_t-3.jpg", "titan_clip_787_000276_movie_t-2.jpg", "titan_clip_787_000276_movie_t-1.jpg", "titan_clip_787_000276_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban side street with buildings tight to the curb appears as a narrow two-way road without a centerline or median; the pavement is smooth and traffic is light with no vehicles visible. On the left edge near the camera, a man walks toward the ego-vehicle in the roadway, narrowing the usable lane ahead. On the right side ahead, a pedestrian carrying a backpack talks on the phone while walking toward the ego along the road, having moved there to get around another pedestrian. A 40 speed limit sign is posted on a pole at the right.", "hazard_reasoning": "There is a pedestrian carrying a backpack, talking on the phone, and walking on the right side of the road, towards the ego-car, because of another pedestrian. The distracted pedestrian may unexpectedly step into the road, so the driver should manoeuvre carefully around them."}
{"id": "train_06143", "split": "train", "clip_key": "2020-0228-102841_069008_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_069008_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_069008_movie_t-3_augB1.jpg", "2020-0228-102841_069008_movie_t-2_augB1.jpg", "2020-0228-102841_069008_movie_t-1_augB1.jpg", "2020-0228-102841_069008_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision", "environment_perception": "An urban scene on a narrow two-way local street without a centerline shows dry pavement and light traffic, with buildings tight to the roadway and railings; parked vehicles line both sides and cones narrow the left edge. Two men with backpacks cross ahead from right to left midblock where there is no crosswalk, moving through the ego lane and forcing a yield. A pedestrian waits on the right sidewalk near the curb by a convenience store, close to the crossing path and potentially stepping out. A white van stands ahead along the left verge while other parked cars further restrict the lane.", "hazard_reasoning": "There are two men carrying backpacks, crossing the road in front of the ego car, because there's no crosswalk. The driver should slow down to avoid a collision with pedestrians crossing unexpectedly."}
{"id": "train_06144", "split": "train", "clip_key": "2020-0213-143552_083775_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "083775"}, "frames": ["2020-0213-143552_083775_movie_t-3.jpg", "2020-0213-143552_083775_movie_t-2.jpg", "2020-0213-143552_083775_movie_t-1.jpg", "2020-0213-143552_083775_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated expressway with three same-direction lanes on smooth red pavement, separated by guardrails, and traffic is light and flowing. A white truck ahead in the center lane drives away from the ego car as the space in front of it is clear. A small silver hatchback slightly ahead to the left continues straight at moderate speed without affecting the ego path. A larger white box truck is stopped along the left edge near the curb and does not merge. A traffic signal structure is visible farther ahead beneath the viaduct.", "hazard_reasoning": "There is a white truck driving away from the ego car, because the road ahead is clear, in front of the truck. The driver should follow the vehicle ahead to maintain a safe distance and be prepared for any sudden braking."}
{"id": "train_06145", "split": "train", "clip_key": "2020-0227-104226_026550_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "026550"}, "frames": ["2020-0227-104226_026550_movie_t-3.jpg", "2020-0227-104226_026550_movie_t-2.jpg", "2020-0227-104226_026550_movie_t-1.jpg", "2020-0227-104226_026550_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene unfolds on a two-lane road running under an elevated structure, bounded by a guardrail on the right and buildings with a sidewalk on the left; the pavement is clean and traffic is light. A black minivan ahead in the ego lane slows, constraining the ego car, because a truck further ahead is changing lanes. The white box truck in the same direction shifts across lanes near the center of the road and settles ahead, causing brief speed adjustments. Another passenger car proceeds steadily in the adjacent left lane, maintaining its line without affecting the ego path. Overhead blue directional boards are visible above the roadway, while no signals or unusual hazards appear.", "hazard_reasoning": "There is a black minivan slowing in the ego lane, in front of the ego car, because a truck ahead is changing lanes. The minivan's deceleration due to the merging truck may require you to slow down to maintain a safe following distance."}
{"id": "train_06146", "split": "train", "clip_key": "2020-0214-102601_025998_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "025998"}, "frames": ["2020-0214-102601_025998_movie_t-3.jpg", "2020-0214-102601_025998_movie_t-2.jpg", "2020-0214-102601_025998_movie_t-1.jpg", "2020-0214-102601_025998_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban arterial with four or more same-direction lanes and smooth pavement carries heavy, slow-moving traffic without a physical median. The ego car proceeds in a central lane. A green sedan directly ahead in the ego lane slows because a small box truck farther ahead in the same lane is also slowing, and this combination constrains the ego vehicle's pace. A large white coach bus runs slightly ahead in the lane to the right, creeping forward parallel to the ego car and limiting any move to the right. Farther ahead-left, a blue van continues steadily within its lane amid the queue and does not encroach on the ego path.", "hazard_reasoning": "There is a green sedan slowing in front of the ego car, because of a truck slowing ahead in the ego lane. The ego vehicle should slow down to maintain a safe distance and adapt to the reduced speed ahead."}
{"id": "train_06147", "split": "train", "clip_key": "2020-0204-150838_079109_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_079109_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_079109_movie_t-3_augB1.jpg", "2020-0204-150838_079109_movie_t-2_augB1.jpg", "2020-0204-150838_079109_movie_t-1_augB1.jpg", "2020-0204-150838_079109_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "A suburban expressway segment runs under an elevated viaduct with two same-direction lanes, a solid right shoulder, and smooth pavement; traffic flows at a moderate, steady pace. A white box truck travels ahead in the ego lane and effectively sets the pace. In the left lane slightly ahead, a large tanker truck proceeds parallel at similar speed, limiting any move to the left. Farther ahead near the center of the scene, a small car is visible beyond the box truck but does not affect the ego vehicle. Construction fencing and barriers line the right shoulder, tightening the margin but leaving the lane clear.", "hazard_reasoning": "There is a black motorcycle cutting into the ego lane, from the left lane. The driver should yield to the merging motorcycle to prevent a collision under this scenario."}
{"id": "train_06148", "split": "train", "clip_key": "titan_clip_1246_000540_movie", "source": {"subset": "titan", "scenario": "clip_1246", "frame": "000540"}, "frames": ["titan_clip_1246_000540_movie_t-3.jpg", "titan_clip_1246_000540_movie_t-2.jpg", "titan_clip_1246_000540_movie_t-1.jpg", "titan_clip_1246_000540_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single vehicle lane runs between buildings, bordered by red-white guardrails; the pavement looks slightly worn and traffic is light with no cars present. Ahead, a pedestrian wearing blue pants and a white shirt walks toward the ego car in the middle of the lane, directly occupying the path and constraining progress. Farther ahead, a few people move along the right edge inside the railings and remain out of the lane. Parked bicycles and storefront clutter line both sides, narrowing lateral clearance but not blocking the roadway.", "hazard_reasoning": "There is a pedestrian wearing blue pants and white shirt, walking toward the ego car in the middle of the lane. The pedestrian is entering the vehicle's path and may collide if the vehicle maintains speed, so the driver should slow down."}
{"id": "train_06149", "split": "train", "clip_key": "2020-0204-103442_071773_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "071773"}, "frames": ["2020-0204-103442_071773_movie_t-3.jpg", "2020-0204-103442_071773_movie_t-2.jpg", "2020-0204-103442_071773_movie_t-1.jpg", "2020-0204-103442_071773_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with a solid yellow centerline and no median has dry pavement and slow flow toward a signalized intersection. A black sedan directly ahead in the ego lane slows with brake lights and moves toward the centerline, preparing to turn right because traffic is backed up ahead in the ego lane. Farther ahead in the same direction, a large dump truck is queued near the intersection and constrains the pace. In the oncoming lane, a small truck moves past the junction and remains clear of the ego path. Overhead traffic lights and utility lines are visible at the intersection.", "hazard_reasoning": "There is a black sedan slowing in front of the ego car and aiming to turn right, because of traffic congestion ahead in the ego lane. Slow down to maintain a safe distance and avoid collision when the sedan reduces speed or turns."}
{"id": "train_06150", "split": "train", "clip_key": "2020-0228-150133_039078_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-150133_039078_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-150133_039078_movie_t-3_augB1.jpg", "2020-0228-150133_039078_movie_t-2_augB1.jpg", "2020-0228-150133_039078_movie_t-1_augB1.jpg", "2020-0228-150133_039078_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian in left lane", "environment_perception": "An urban two-way arterial with two lanes per direction is straight and smoothly paved, divided by double white lines; the ego vehicle travels in the left lane amid moderate flow. A black sedan directly ahead in the ego lane moves steadily and sets the pace. In the left curb lane, a large car-carrier truck is parked, and a pedestrian wearing purple pants and a cap stands in the lane beside it checking the truck, narrowing that lane. In the opposite direction, a white box truck approaches in the nearest oncoming lane and continues straight past. Parked vehicles line the left side.", "hazard_reasoning": "There is a pedestrian wearing purple pants and a cap, standing in the left lane, because they are doing a check on the parked truck in the left lane. Driver should be cautious since the pedestrian occupies the lane and may step into the vehicle's path unexpectedly."}
{"id": "train_06151", "split": "train", "clip_key": "2020-0127-132751_097753_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "097753"}, "frames": ["2020-0127-132751_097753_movie_t-3.jpg", "2020-0127-132751_097753_movie_t-2.jpg", "2020-0127-132751_097753_movie_t-1.jpg", "2020-0127-132751_097753_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial with smooth pavement runs straight, with the ego traveling in the left lane beside a channelized section marked by orange bollards; traffic is light to moderate and steady. A gray van ahead in the ego lane drives away at a constant pace, effectively setting the ego car's speed. In the adjacent right lane slightly ahead, a white box truck continues straight at similar speed and remains separated by the bollards, so it does not intrude into the ego lane. On the left sidewalk, a cyclist moves parallel to traffic and stays off the road. Overhead blue signs indicate Higashikanagawa 9 km and Shin-Yokohama 5 km.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06152", "split": "train", "clip_key": "2020-0203-154554_044332_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "044332"}, "frames": ["2020-0203-154554_044332_movie_t-3.jpg", "2020-0203-154554_044332_movie_t-2.jpg", "2020-0203-154554_044332_movie_t-1.jpg", "2020-0203-154554_044332_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "The scene is an urban expressway inside a covered section with two same-direction lanes, guardrails and sound barriers, dry pavement, and heavy stop-and-go traffic. A silver sedan immediately ahead in the ego lane is stopped with brake lights on, holding the ego vehicle due to congestion ahead. To the right, a black van in the adjacent lane creeps forward alongside in the queue, staying parallel to the ego car. Farther ahead, a line of trucks and small vans in both lanes inches forward, including a white mini truck on the right and a boxy truck ahead that keep the jam compact.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_06153", "split": "train", "clip_key": "titan_clip_9_000222_movie", "source": {"subset": "titan", "scenario": "clip_9", "frame": "000222"}, "frames": ["titan_clip_9_000222_movie_t-3.jpg", "titan_clip_9_000222_movie_t-2.jpg", "titan_clip_9_000222_movie_t-1.jpg", "titan_clip_9_000222_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban intersection on a narrow two-way street with a single lane each direction has smooth pavement and light vehicle flow but heavy pedestrian activity. On the left side of the crosswalk ahead, a pedestrian in a red shirt and pants with a backpack and cap walks away from the ego car along the left edge of the intersection and may occupy the ego lane. Another backpacked pedestrian ahead at center walks away across the crosswalk directly in front of the vehicle, constraining its pace. Additional pedestrians enter from the right curb and cross toward the left across the far half of the intersection. A white delivery truck continues straight beyond the junction moving away, while a blue truck is stopped at the left curb with a handcart nearby.", "hazard_reasoning": "There is a pedestrian wearing a red shirt, red pants, carrying a backpack, and wearing a cap, who is walking at the left side of the intersection, away from the ego car. The driver should manoeuvre carefully around this pedestrian to maintain safe passing distance and avoid potential collision."}
{"id": "train_06154", "split": "train", "clip_key": "2020-0129-144857_010411_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "010411"}, "frames": ["2020-0129-144857_010411_movie_t-3.jpg", "2020-0129-144857_010411_movie_t-2.jpg", "2020-0129-144857_010411_movie_t-1.jpg", "2020-0129-144857_010411_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with no physical median and smooth dry pavement approaches a signalized intersection, and traffic is moderate in both directions. Directly ahead in the ego lane a silver hatchback is stopped with its right indicator flashing, waiting to turn right because oncoming vehicles are passing through. In the opposite lanes to the right, a dark SUV and several cars continue straight across the junction, which prevents the hatchback from turning and holds the ego vehicle. A same-direction car in the left adjacent lane edges forward beside the ego vehicle and proceeds ahead. Overhead traffic signals and streetlights mark the intersection, and no obstacles are visible.", "hazard_reasoning": "There is a silver hatchback signaling right, stopped in front of the ego car, in the ego lane, because of oncoming traffic. The driver must stop to avoid colliding with the halted vehicle and comply with the red light."}
{"id": "train_06155", "split": "train", "clip_key": "titan_clip_894_000318_movie", "source": {"subset": "titan", "scenario": "clip_894", "frame": "000318"}, "frames": ["titan_clip_894_000318_movie_t-3.jpg", "titan_clip_894_000318_movie_t-2.jpg", "titan_clip_894_000318_movie_t-1.jpg", "titan_clip_894_000318_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around parked truck", "environment_perception": "An urban commercial street with a narrow two-way carriageway, no median, and patched asphalt shows light traffic that bunches near loading vehicles as the road bends slightly right. On the left close ahead, a white truck is parked for unloading, partially intruding into the ego lane and prompting the ego vehicle to slow; a cardboard box sits behind it on the roadway as a marker. Farther ahead in the same direction, another box truck pauses near the curb, further constraining the lane and setting the pace. In the opposing lane, a small truck approaches from ahead, reducing space to pass the parked vehicles. Pedestrians stay on the right sidewalk.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. This parked vehicle may block the driver's view of oncoming traffic or pedestrians, so the driver should manoeuvre carefully around it to avoid collisions."}
{"id": "train_06156", "split": "train", "clip_key": "2020-0213-143552_028955_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "028955"}, "frames": ["2020-0213-143552_028955_movie_t-3.jpg", "2020-0213-143552_028955_movie_t-2.jpg", "2020-0213-143552_028955_movie_t-1.jpg", "2020-0213-143552_028955_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with no centerline or divider runs along a tiled building corner; the wet pavement suggests recent moisture and traffic is light. A cyclist ahead along the left curb rides away in the same direction near the wall, occupying the lane and effectively setting the pace. A sign pole stands at the corner with local street signs but no traffic signals are visible. Parked bicycles and rows of planter boxes line the left side, and the sharp building corner creates a limited-visibility bend to the right.", "hazard_reasoning": "There is a pedestrian wearing a brown shirt walking in front of, and away from, the ego car. The wet surface and close proximity of the pedestrian to the roadway increase the risk of slipping or unexpected movement into the lane, so the driver should slow down to maintain control and avoid a collision."}
{"id": "train_06157", "split": "train", "clip_key": "2020-0205-103411_002926_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "002926"}, "frames": ["2020-0205-103411_002926_movie_t-3.jpg", "2020-0205-103411_002926_movie_t-2.jpg", "2020-0205-103411_002926_movie_t-1.jpg", "2020-0205-103411_002926_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "An urban signalized intersection with multiple approach lanes and wide zebra crosswalks is seen; the pavement is clean and dry and traffic appears light to moderate. Ahead, a pedestrian carrying a handbag walks leftward across the near crosswalk toward the left-hand side, passing in front of the ego vehicle and temporarily dictating its pace. Cross traffic includes a small white truck traveling right to left through the intersection ahead, clearing the crosswalk. Another pedestrian waits at the near-right corner beside the crosswalk, standing near the curb without entering the roadway.", "hazard_reasoning": "There is a pedestrian carrying a handbag and wearing a pink coat, walking across a crosswalk to the left hand side. The pedestrian is in the designated crossing area and has the right of way at the red light, so the driver should yield to avoid a collision."}
{"id": "train_06158", "split": "train", "clip_key": "titan_clip_1226_000054_movie", "source": {"subset": "titan", "scenario": "clip_1226", "frame": "000054"}, "frames": ["titan_clip_1226_000054_movie_t-3.jpg", "titan_clip_1226_000054_movie_t-2.jpg", "titan_clip_1226_000054_movie_t-1.jpg", "titan_clip_1226_000054_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A quiet urban side street with brick-pattern pavement and no center line runs straight between low-rise shopfronts, with metal railings along both sidewalks; the surface looks smooth and traffic is absent. No moving vehicles, cyclists, or pedestrians are visible ahead, and the ego lane remains unobstructed. Far ahead on the right, a small van is parked at the curb without encroaching on the roadway.", "hazard_reasoning": "No hazards are present in the current scene, so no driver warning is necessary."}
{"id": "train_06159", "split": "train", "clip_key": "titan_clip_160_000126_movie", "source": {"subset": "titan", "scenario": "clip_160", "frame": "000126"}, "frames": ["titan_clip_160_000126_movie_t-3.jpg", "titan_clip_160_000126_movie_t-2.jpg", "titan_clip_160_000126_movie_t-1.jpg", "titan_clip_160_000126_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single undivided lane runs between shopfronts, the pavement smooth and the flow light with no visible vehicles. The ego car proceeds slowly as a pedestrian in a blue shirt carrying a handbag walks ahead from the left side toward the right and away from the vehicle, briefly occupying the lane and crossing its path. Another pedestrian ahead along the left edge walks in the same direction near storefronts, keeping partly in the lane and potentially constraining the ego vehicle's pace. Farther ahead, several pedestrians move about near the bright junction area, some stepping across the roadway in the distance and may enter the path. Numerous signboards and parked bicycles line both sides, narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing a blue shirt, and walking from the left side of the road, to the right side, and away from the ego car. The pedestrian is crossing the path of the ego-vehicle, so the driver should slow down to safely yield and avoid a collision."}
{"id": "train_06160", "split": "train", "clip_key": "2020-0127-132751_022726_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "022726"}, "frames": ["2020-0127-132751_022726_movie_t-3.jpg", "2020-0127-132751_022726_movie_t-2.jpg", "2020-0127-132751_022726_movie_t-1.jpg", "2020-0127-132751_022726_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs under an elevated expressway with three lanes in the ego direction, a metal barrier separating oncoming traffic to the right, dry pavement, and light flow. A motorcycle ahead slightly right of center accelerates away in the same direction without constraining the ego vehicle. Farther ahead a white car in the middle lane proceeds straight and functions as the lead vehicle at a steady speed. At the left curb, a three-wheeled scooter is stopped beside the travel lane and may enter the lane. On the opposite carriageway to the right, a silver van approaches as oncoming traffic behind the barrier and does not interact with the ego lane. Overhead blue direction signs indicate upcoming routes with distances around 250 m.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06161", "split": "train", "clip_key": "2020-0213-143552_036421_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "036421"}, "frames": ["2020-0213-143552_036421_movie_t-3.jpg", "2020-0213-143552_036421_movie_t-2.jpg", "2020-0213-143552_036421_movie_t-1.jpg", "2020-0213-143552_036421_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated two-lane road curves right under a viaduct, lined with concrete barriers and smooth pavement, with moderate uphill traffic. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. In the adjacent right lane, several cars, including a dark SUV, move slightly faster and pass alongside the truck. On a separated side lane to the right, a motorcyclist rides ahead toward a merge area and may enter ahead of the ego lane.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's deceleration ahead creates a risk of rear-end collision if the driver does not reduce speed, so the driver should slow down to maintain a safe following distance."}
{"id": "train_06162", "split": "train", "clip_key": "2020-0217-110854_001739_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-110854_001739_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-110854_001739_movie_t-3_augB1.jpg", "2020-0217-110854_001739_movie_t-2_augB1.jpg", "2020-0217-110854_001739_movie_t-1_augB1.jpg", "2020-0217-110854_001739_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way shopping street with single narrow lanes and no median appears, the pavement dry and slightly worn, and traffic heavy with a slow queue ahead. A red scooter directly ahead in the ego lane slows to a crawl because of congestion ahead, keeping the ego car at its pace. Farther ahead in the same lane, a white sedan is nearly stopped in the line, forming the bottleneck. A large delivery truck at the left curb just beyond the scooter stands partially intruding into the lane, narrowing the passage and adding to the slowdown.", "hazard_reasoning": "There is a red scooter slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Slow down to maintain a safe distance and respond to the reduced speed of the scooter."}
{"id": "train_06163", "split": "train", "clip_key": "2020-0131-135401_015974_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "015974"}, "frames": ["2020-0131-135401_015974_movie_t-3.jpg", "2020-0131-135401_015974_movie_t-2.jpg", "2020-0131-135401_015974_movie_t-1.jpg", "2020-0131-135401_015974_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes approaches a signalized intersection, the left lane for through traffic and the right for turning, on smooth pavement; traffic is moderate, queued then begins moving as the signal changes. A black hatchback directly ahead in the ego lane accelerates away when the traffic light turns green, opening space in front of the ego car. To the right, a motorcyclist in the right-turn lane rolls forward and passes alongside near the junction, remaining close to the ego vehicle. Farther ahead in the right-turn lane, a white sedan edges toward its turn without affecting the ego lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06164", "split": "train", "clip_key": "titan_clip_121_000468_movie", "source": {"subset": "titan", "scenario": "clip_121", "frame": "000468"}, "frames": ["titan_clip_121_000468_movie_t-3.jpg", "titan_clip_121_000468_movie_t-2.jpg", "titan_clip_121_000468_movie_t-1.jpg", "titan_clip_121_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow two-way urban backstreet without a centerline runs between tall buildings; the pavement is smooth and dry, and traffic is light as the ego car proceeds along the left side toward a small intersection ahead. A white van is stopped ahead along the right curb, protruding into the roadway and narrowing the passage, which constrains the ego vehicle's path. Beside it on the right, a pedestrian wearing a black shirt and blue shorts stands at the edge of the road and may step into the near lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and blue shorts, standing on the right side of the road. The driver should carefully manoeuvre because the pedestrian near the travel path may step into the lane unexpectedly."}
{"id": "train_06165", "split": "train", "clip_key": "2020-0212-150403_007093_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "007093"}, "frames": ["2020-0212-150403_007093_movie_t-3.jpg", "2020-0212-150403_007093_movie_t-2.jpg", "2020-0212-150403_007093_movie_t-1.jpg", "2020-0212-150403_007093_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and a raised median on the right curves gently right; the pavement is good and traffic is heavy, slowing into a queue. A black SUV directly ahead in the ego lane slows in response to congestion, constraining the ego car's pace. A large box truck slightly ahead to the left inches forward in the adjacent lane, narrowing gaps beside the ego vehicle. A white van ahead-right travels slowly in the right lane, remaining parallel and keeping its lane. An overhead circular prohibition sign is visible above the roadway. Buildings line both sides and no unusual obstacles appear.", "hazard_reasoning": "There is a black SUV slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. Slow down to maintain a safe distance and avoid a rear-end collision due to the reduced traffic flow."}
{"id": "train_06166", "split": "train", "clip_key": "2020-0226-101332_034102_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "034102"}, "frames": ["2020-0226-101332_034102_movie_t-3.jpg", "2020-0226-101332_034102_movie_t-2.jpg", "2020-0226-101332_034102_movie_t-1.jpg", "2020-0226-101332_034102_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban divided road with two lanes in the ego direction curves gently right, bordered by guardrails and trees; the asphalt looks damp and traffic is light. In the right lane ahead, a white van drives away from the ego car, maintaining its lane. Ahead in the ego left lane, another small white van continues straight at a steady pace and constrains our speed. Beyond the central barrier, several cars travel in the opposite direction on the separate carriageway.", "hazard_reasoning": "There is a white van driving in the right lane, away from the ego car. The van is partially on the shoulder and may merge into the travel lane unexpectedly, so the driver should stay alert."}
{"id": "train_06167", "split": "train", "clip_key": "titan_clip_825_000414_movie", "source": {"subset": "titan", "scenario": "clip_825", "frame": "000414"}, "frames": ["titan_clip_825_000414_movie_t-3.jpg", "titan_clip_825_000414_movie_t-2.jpg", "titan_clip_825_000414_movie_t-1.jpg", "titan_clip_825_000414_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban side street with midrise buildings appears as a narrow two-way road without a centerline, bordered by green edge strips and sidewalks; the pavement is smooth and no vehicles pass in either direction, so traffic is light. Cones and barriers along the left curb form a small work zone that slightly narrows the roadway. Ahead in the middle of the road, a pedestrian wearing a white shirt and beige pants walks toward the ego vehicle while drifting toward the left side, potentially entering its path. Farther ahead, two pedestrians in the lane walk away from the camera near the center, occupying the travel space and constraining the approach. On the right edge by the green strip, another pedestrian walks toward the camera but stays out of the lane.", "hazard_reasoning": "A pedestrian wearing a white shirt and beige pants is walking in the middle of the road, toward the left side of the road and the ego car. The driver should slow down to avoid a collision as the pedestrian is encroaching into the vehicle's path."}
{"id": "train_06168", "split": "train", "clip_key": "2020-0227-104226_042274_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-104226_042274_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-104226_042274_movie_t-3_augB1.jpg", "2020-0227-104226_042274_movie_t-2_augB1.jpg", "2020-0227-104226_042274_movie_t-1_augB1.jpg", "2020-0227-104226_042274_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with a solid yellow centerline and smooth pavement runs beneath a pedestrian footbridge; it has one through lane in the ego direction plus a narrow curbside lane, and traffic is heavy with a slow queue ahead. A white hatchback directly ahead in the ego lane slows because of the congestion, setting the pace for the ego vehicle. On the left, a small white flatbed truck travels slowly along the curbside lane slightly ahead, hugging the line and reducing lateral clearance. To the right of the centerline, oncoming traffic including two white sedans approaches in adjacent lanes, remaining separated from the ego lane.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car in the ego lane, because of the traffic congestion ahead. The driver should reduce speed to maintain a safe following distance and avoid collision due to the congestion ahead."}
{"id": "train_06169", "split": "train", "clip_key": "titan_clip_147_000168_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_147_000168_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_147_000168_movie_t-3_augB1.jpg", "titan_clip_147_000168_movie_t-2_augB1.jpg", "titan_clip_147_000168_movie_t-1_augB1.jpg", "titan_clip_147_000168_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban single-lane one-way street runs between midrise buildings; pavement is good and traffic is light but slows at a zebra crossing, with cones and a parked flatbed along the left curb. On the left of the ego car, a female pedestrian with black hair wearing a flowered skirt and a black shirt walks in the middle of the road because the truck occupies the curbside, and she may drift into the ego lane. Ahead, a white box truck in the same lane is stopped or crawling at the crosswalk, constraining the ego vehicle and blocking sightlines. Slightly ahead to the right, a red delivery scooter moves forward and turns right across the zebra crossing, briefly crossing the ego path. Blue roadside signs indicate straight-ahead travel and a pedestrian zone.", "hazard_reasoning": "There is a female pedestrian, with black hair, wearing a flowered skirt and black shirt, walking down the middle of the road, on the left side of the ego-car, because of a parked truck on the left hand side of the road. Manoeuvre carefully around the pedestrian to avoid collision due to her unexpected position in the lane."}
{"id": "train_06170", "split": "train", "clip_key": "2020-0205-103411_027541_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "027541"}, "frames": ["2020-0205-103411_027541_movie_t-3.jpg", "2020-0205-103411_027541_movie_t-2.jpg", "2020-0205-103411_027541_movie_t-1.jpg", "2020-0205-103411_027541_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction curves gently right, bordered by guardrails and a stone retaining wall; the pavement is dry and traffic is light. A white van ahead in the right lane drives away from the ego vehicle as the road ahead is clear. A few distant cars continue along the same curve without influencing the ego lane. An overhead directional sign is visible above the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06171", "split": "train", "clip_key": "2020-0228-102841_070857_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "070857"}, "frames": ["2020-0228-102841_070857_movie_t-3.jpg", "2020-0228-102841_070857_movie_t-2.jpg", "2020-0228-102841_070857_movie_t-1.jpg", "2020-0228-102841_070857_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the construction worker", "environment_perception": "An urban street with midrise buildings lines both sides; the ego vehicle proceeds on a narrow two-way road without a median, the asphalt slightly worn, and traffic is light, slowing near a curbside work zone. Ahead, a large cement mixer truck is stopped partly in the ego lane along the right side by the construction site, narrowing the passage and setting the pace. A man wearing an orange vest, helmet, and blue shirt stands on the right within the ego lane beside cones because of repair work, watching the approach and managing the gap past the truck. Several pedestrians walk along the left sidewalk and remain off the roadway. Cones and barricades mark the work area along the right edge.", "hazard_reasoning": "There's a man standing on the right side of the road, wearing orange vest, wearing helmet, and wearing a blue shirt, in the ego lane, because of repair work. The worker and cones obstruct the lane, so the driver should manoeuvre carefully around them to avoid a collision."}
{"id": "train_06172", "split": "train", "clip_key": "titan_clip_651_000372_movie", "source": {"subset": "titan", "scenario": "clip_651", "frame": "000372"}, "frames": ["titan_clip_651_000372_movie_t-3.jpg", "titan_clip_651_000372_movie_t-2.jpg", "titan_clip_651_000372_movie_t-1.jpg", "titan_clip_651_000372_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the waiting pedestrian", "environment_perception": "An urban residential two-way street runs slightly uphill with no centerline and a green edge lane along the right curb; the asphalt looks smooth and traffic is light with no vehicles visible. Near ahead on the left side of the lane, a pedestrian wearing all black is waiting to cross toward the right and could step into the ego path. Farther ahead to the right, two pedestrians walk uphill near the curb within the green-marked strip, staying clear of the lane. Another person is visible farther up near the center moving away in the same direction, potentially constraining the approach speed.", "hazard_reasoning": "A pedestrian wearing all black is waiting on the left side of the lane to cross to the right side. The driver should be aware because the pedestrian may step into the lane unexpectedly."}
{"id": "train_06173", "split": "train", "clip_key": "2020-0227-104226_020707_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "020707"}, "frames": ["2020-0227-104226_020707_movie_t-3.jpg", "2020-0227-104226_020707_movie_t-2.jpg", "2020-0227-104226_020707_movie_t-1.jpg", "2020-0227-104226_020707_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial under an elevated expressway has two same-direction lanes with a guardrail on the right and storefronts on the left; the dry pavement appears smooth and traffic is heavy and mostly stopped. A white van directly ahead in the ego lane is stationary for a red light ahead, holding the ego vehicle in the queue. In the adjacent right lane, a black car slightly ahead is also stopped, limiting any chance to merge around the van. Farther ahead in the same lane, a small white car remains queued beyond the van. A fenced area with parked bicycles lines the right, and the roadway itself is clear of obstacles.", "hazard_reasoning": "There is a white van stopped in front of the ego-car, in the ego lane, because of red traffic light ahead. The driver should stop to avoid a collision with the halted van and comply with the red signal."}
{"id": "train_06174", "split": "train", "clip_key": "2020-0203-114632_081165_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "081165"}, "frames": ["2020-0203-114632_081165_movie_t-3.jpg", "2020-0203-114632_081165_movie_t-2.jpg", "2020-0203-114632_081165_movie_t-1.jpg", "2020-0203-114632_081165_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with a single lane per direction runs under an elevated structure; the pavement is smooth and traffic is light with a slight slowdown ahead. Directly ahead in the ego lane, a silver van slows because a truck farther ahead is reducing speed, so the van constrains the ego car's pace. Farther along the same lane, the truck continues slowly under the viaduct and sets the flow for following vehicles. Parked vehicles remain behind the fence on the right and do not intrude into the roadway.", "hazard_reasoning": "There is a silver van slowing in the ego lane, in front of the ego car, because of truck slowing ahead. The slowing van indicates reduced speed ahead and may require you to slow down to maintain a safe following distance."}
{"id": "train_06175", "split": "train", "clip_key": "2020-0131-135401_071840_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "071840"}, "frames": ["2020-0131-135401_071840_movie_t-3.jpg", "2020-0131-135401_071840_movie_t-2.jpg", "2020-0131-135401_071840_movie_t-1.jpg", "2020-0131-135401_071840_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs through midrise buildings, with no physical median and smooth dry pavement; traffic is heavy and moves in slow stop-and-go queues. A black car directly ahead in the ego lane slows to a crawl due to congestion and controls the ego vehicle's speed. In the lane to the right, a blue container truck just ahead inches forward and stays close alongside, limiting opportunities to merge. In the far-right lane, a black van also creeps forward near the truck, maintaining the packed formation ahead.", "hazard_reasoning": "There's a black sedan that's slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_06176", "split": "train", "clip_key": "2020-0205-103411_008182_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "008182"}, "frames": ["2020-0205-103411_008182_movie_t-3.jpg", "2020-0205-103411_008182_movie_t-2.jpg", "2020-0205-103411_008182_movie_t-1.jpg", "2020-0205-103411_008182_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way street with no physical median has dry, well-kept pavement and light to moderate flow as the vehicle approaches a signalized intersection. Ahead in the ego lane, a small dark van proceeds straight through the junction at a steady pace, setting the ego vehicle's speed. In the opposing lanes to the right, a white truck and a silver minivan approach and continue straight, remaining in their lanes without encroaching on the ego path. Along the left curb near the camera, a dark sedan is parked at the roadside, creating a stationary edge but not impeding travel. Overhead traffic signals are visible controlling the intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06177", "split": "train", "clip_key": "2020-0205-103411_088331_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "088331"}, "frames": ["2020-0205-103411_088331_movie_t-3.jpg", "2020-0205-103411_088331_movie_t-2.jpg", "2020-0205-103411_088331_movie_t-1.jpg", "2020-0205-103411_088331_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane two-way arterial with a solid center line and smooth pavement has moderate, queued traffic at a signalized intersection. A white hatchback directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. To its left, a white SUV in the adjacent same-direction lane is also stopped slightly ahead in the queue. On the near left, a silver minivan draws alongside at low speed and remains parallel to the ego car. The traffic signal ahead shows red.", "hazard_reasoning": "There is a white hatchback that has stopped in front of the ego car, in the ego lane, because of the red traffic light. The driver should stop to maintain a safe distance and obey the traffic signal."}
{"id": "train_06178", "split": "train", "clip_key": "titan_clip_503_000414_movie", "source": {"subset": "titan", "scenario": "clip_503", "frame": "000414"}, "frames": ["titan_clip_503_000414_movie_t-3.jpg", "titan_clip_503_000414_movie_t-2.jpg", "titan_clip_503_000414_movie_t-1.jpg", "titan_clip_503_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with interlocking pavers forms a single shared lane without a centerline or median, and the pavement appears smooth. Traffic is light with no other vehicles, and movement is slow amid pedestrians. On the right, a pedestrian wearing black pants and a blue T-shirt walks away from the ego-vehicle along the edge and may drift into the lane. Ahead in the center, several pedestrians walk along the roadway and occasionally cross between sides, constraining the ego-vehicle's pace. On the left near a storefront, another person steps from the curb toward the travel lane and may enter the path. Parked bicycles and shop signboards line both sides, narrowing the usable corridor.", "hazard_reasoning": "There's a pedestrian wearing black pants and a blue t-shirt, walking on the right side of the road, away from the ego car. The pedestrian may change direction or step off the sidewalk unexpectedly, so the driver should slow down to maintain safe distance and reaction time."}
{"id": "train_06179", "split": "train", "clip_key": "titan_clip_429_000570_movie", "source": {"subset": "titan", "scenario": "clip_429", "frame": "000570"}, "frames": ["titan_clip_429_000570_movie_t-3.jpg", "titan_clip_429_000570_movie_t-2.jpg", "titan_clip_429_000570_movie_t-1.jpg", "titan_clip_429_000570_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban two-way street with single lanes, no median, and sound pavement carries light traffic. The ego vehicle moves in the left lane past closely spaced buildings. Ahead on the right curb, a black minivan is parked partially in the ego lane, narrowing the usable space and prompting the path to edge left. Two pedestrians on the right sidewalk walk toward the camera beside this minivan, one close to the curb and potentially stepping into the lane as the car passes. Farther ahead in the same direction, a small blue truck near the left curb is slow or stopped, influencing the pace. A blue circular no-parking sign stands on the left side of the street.", "hazard_reasoning": "There is a black minivan parked in the ego lane on the right side on the right side of the road. The driver should carefully manoeuvre around the parked minivan to avoid collision and maintain safe lane position."}
{"id": "train_06180", "split": "train", "clip_key": "2020-0204-150838_052295_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "052295"}, "frames": ["2020-0204-150838_052295_movie_t-3.jpg", "2020-0204-150838_052295_movie_t-2.jpg", "2020-0204-150838_052295_movie_t-1.jpg", "2020-0204-150838_052295_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane roadway under an elevated structure carries light to moderate same-direction traffic on dry pavement, with fencing on the right and trees on the left; the lanes rise toward a short uphill ramp that briefly limits forward visibility. A white box truck travels ahead in the ego lane, moving away and effectively setting the ego car's pace. A silver microvan is alongside in the left lane and then falls slightly behind while staying in its lane. Farther ahead in the left lane, another white van proceeds and gradually pulls ahead of the truck, remaining separate from the ego path. No oncoming traffic or salient signals are visible.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. You should follow the vehicle ahead to maintain a safe distance and avoid potential sudden braking from the white truck."}
{"id": "train_06181", "split": "train", "clip_key": "titan_clip_711_000420_movie", "source": {"subset": "titan", "scenario": "clip_711", "frame": "000420"}, "frames": ["titan_clip_711_000420_movie_t-3.jpg", "titan_clip_711_000420_movie_t-2.jpg", "titan_clip_711_000420_movie_t-1.jpg", "titan_clip_711_000420_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Yield to cyclist on the right", "environment_perception": "An urban residential alley with a very narrow two-way roadway, no centerline, smooth pavement, and light traffic approaches a side street on the right by a building corner with a convex mirror, creating a partial blind corner. A person wearing a striped shirt and white shorts cycles on the right side toward the ego car, coming oncoming and edging toward the ego lane near the intersection. Farther ahead along the left edge, another cyclist travels away in the same direction and stays close to the curb. A pedestrian is near the left curb by a pole, walking slowly along the edge without entering the lane. A car sits inside a recessed garage on the right and does not protrude into the roadway.", "hazard_reasoning": "There is a person wearing a striped shirt and white shorts, cycling on the right side of the road, towards the ego car. The cyclist could enter the vehicle's path unexpectedly, so the driver should yield to avoid a collision and allow safe passage."}
{"id": "train_06182", "split": "train", "clip_key": "2020-0127-132751_024858_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "024858"}, "frames": ["2020-0127-132751_024858_movie_t-3.jpg", "2020-0127-132751_024858_movie_t-2.jpg", "2020-0127-132751_024858_movie_t-1.jpg", "2020-0127-132751_024858_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial runs beneath an elevated expressway with two same-direction lanes divided by a painted island and smooth reddish pavement; traffic is moderate and temporarily halted at a signal. A white hatchback directly ahead in the ego lane is stopped at a red traffic light, holding the ego vehicle. In the adjacent right lane, a line of cars, including a dark hatchback and a van, slows and stops in the same queue while maintaining lane. On the left sidewalk by the buildings, a pedestrian walks along the railing and stays off the roadway. The signal visible ahead displays red.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid colliding with the halted vehicle and obey the traffic signal."}
{"id": "train_06183", "split": "train", "clip_key": "2020-0203-114632_022352_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "022352"}, "frames": ["2020-0203-114632_022352_movie_t-3.jpg", "2020-0203-114632_022352_movie_t-2.jpg", "2020-0203-114632_022352_movie_t-1.jpg", "2020-0203-114632_022352_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with two lanes in each direction and only painted center lines runs between tall buildings; the pavement is smooth and traffic is moderate as the approach nears a signalized intersection. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. In the nearest oncoming lane to the right, a silver minivan approaches the intersection at a steady speed but remains separated by the center line. Farther right, a small white van in the oncoming lanes continues straight toward the junction without affecting the ego path. Overhead traffic lights and directional signs are visible above the intersection.", "hazard_reasoning": "The white truck is slowing in front of the ego car in the ego lane. Because the vehicle ahead is decelerating, you risk a collision if you do not reduce speed promptly to maintain a safe distance."}
{"id": "train_06184", "split": "train", "clip_key": "titan_clip_1212_000102_movie", "source": {"subset": "titan", "scenario": "clip_1212", "frame": "000102"}, "frames": ["titan_clip_1212_000102_movie_t-3.jpg", "titan_clip_1212_000102_movie_t-2.jpg", "titan_clip_1212_000102_movie_t-1.jpg", "titan_clip_1212_000102_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban scene shows a three-lane one-way road with smooth pavement and light traffic, viewed at a signalized crosswalk with no median. A pedestrian in the middle of the road, wearing a blue shirt and a backpack, walks toward the left sidewalk across the ego lane and temporarily occupies the travel path. Far ahead in the center-right lane, a white box truck continues away at a steady pace and does not constrain the ego vehicle. On the left sidewalk near a bus stop, a couple of people stand by the curb without stepping into the street. The nearby pedestrian signal displays a green walk.", "hazard_reasoning": "There is a pedestrian in the middle of the road, wearing a blue shirt and a backpack, walking toward the left sidewalk. The driver should slow down because the pedestrian may step into the vehicle's path unexpectedly, increasing the risk of collision."}
{"id": "train_06185", "split": "train", "clip_key": "titan_clip_1355_000186_movie", "source": {"subset": "titan", "scenario": "clip_1355", "frame": "000186"}, "frames": ["titan_clip_1355_000186_movie_t-3.jpg", "titan_clip_1355_000186_movie_t-2.jpg", "titan_clip_1355_000186_movie_t-1.jpg", "titan_clip_1355_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down as pedestrian walks on road", "environment_perception": "An urban two-way street with one narrow lane per direction is shown, the surface is worn and patchy, there is only a center line and traffic is light. A black sedan ahead in the ego lane moves away toward the next block, modestly setting the pace. A pedestrian in a black suit walks away along the left edge where there is no sidewalk, staying close to the buildings and near the ego lane. An oncoming small white truck travels in the opposing right-side lane and approaches steadily. Bicycles, cones, and metal ramps line the left curb, with some items slightly encroaching into the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black suit, walking on the left side of the road, away from the ego car, because there is no sidewalk. The driver should slow down to ensure sufficient reaction time and avoid a potential collision with the pedestrian."}
{"id": "train_06186", "split": "train", "clip_key": "titan_clip_829_000192_movie", "source": {"subset": "titan", "scenario": "clip_829", "frame": "000192"}, "frames": ["titan_clip_829_000192_movie_t-3.jpg", "titan_clip_829_000192_movie_t-2.jpg", "titan_clip_829_000192_movie_t-1.jpg", "titan_clip_829_000192_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential street with one narrow lane each way and a solid orange centerline appears clean and smooth, and traffic is very light with no moving vehicles ahead or oncoming. The opposite lane stays clear while the ego-vehicle continues in the left lane. A row of parked cars along the right curb and several parked bicycles by shops on the left reduce lateral clearance but do not intrude into the lane. A child-crossing warning sign is posted on the left pole, and a large 30 marking on the pavement indicates the posted speed.", "hazard_reasoning": "There are no immediate hazards present; however, the slight right curve may limit forward visibility, so the driver should stay alert."}
{"id": "train_06187", "split": "train", "clip_key": "2020-0203-114632_003305_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "003305"}, "frames": ["2020-0203-114632_003305_movie_t-3.jpg", "2020-0203-114632_003305_movie_t-2.jpg", "2020-0203-114632_003305_movie_t-1.jpg", "2020-0203-114632_003305_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction and no median runs between mid-rise buildings; the asphalt looks smooth and traffic is moderate as the ego vehicle approaches a crosswalk. A large box truck stands at the left curb just ahead, its body encroaching slightly into the ego lane and narrowing the available space. On the right side in the oncoming lane, two small white trucks approach through the intersection, proceeding straight while staying within their lane. At the right foreground near the crosswalk, a blue hatchback waits at the curb with its nose angled toward the roadway and may merge into the lane after a gap.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06188", "split": "train", "clip_key": "2020-0129-105040_062244_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "062244"}, "frames": ["2020-0129-105040_062244_movie_t-3.jpg", "2020-0129-105040_062244_movie_t-2.jpg", "2020-0129-105040_062244_movie_t-1.jpg", "2020-0129-105040_062244_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane street with no median runs through a narrow shopping area; the pavement is slightly worn with manholes and red shoulder strips, and traffic is light with no vehicles close ahead or oncoming. On the right side ahead, a pedestrian wearing a coat pushes a walker and waits at the zebra crossing to move from right to left, potentially entering the ego lane. A bicycle is parked by the right curb and stays off the roadway. Blue direction signs indicate straight-ahead travel, and signal heads for the crossing are visible above.", "hazard_reasoning": "There is a pedestrian wearing a coat, pushing a walker, and waiting to cross at a pedestrian crossing, from the right side to the left side ahead of the ego-car. The pedestrian may step into the crosswalk when the signal changes, so the driver should stop to yield."}
{"id": "train_06189", "split": "train", "clip_key": "2020-0131-103016_011706_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "011706"}, "frames": ["2020-0131-103016_011706_movie_t-3.jpg", "2020-0131-103016_011706_movie_t-2.jpg", "2020-0131-103016_011706_movie_t-1.jpg", "2020-0131-103016_011706_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "be aware of the motorcycle ahead", "environment_perception": "An urban three-lane arterial runs between midrise offices; the dry asphalt is mostly smooth with a patched manhole in the ego lane, and traffic moves at a moderate, slightly slow pace. A black motorcycle travels ahead in the ego lane and pulls away from the car, increasing its gap. Another scooter is ahead to the left in the adjacent lane, continuing straight at similar speed while remaining in its lane. To the right, a silver sedan with a box truck farther ahead proceeds in the right lane at a comparable pace, occupying the space beside and ahead of the ego vehicle.", "hazard_reasoning": "There is a black motorcycle driving in front of and away from the ego car. Be aware of the motorcycle ahead to anticipate its speed changes near the red light."}
{"id": "train_06190", "split": "train", "clip_key": "titan_clip_1069_000156_movie", "source": {"subset": "titan", "scenario": "clip_1069", "frame": "000156"}, "frames": ["titan_clip_1069_000156_movie_t-3.jpg", "titan_clip_1069_000156_movie_t-2.jpg", "titan_clip_1069_000156_movie_t-1.jpg", "titan_clip_1069_000156_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban shopping street with no lane markings runs between storefronts, bordered by brick sidewalks and bollards; the pavement is smooth and there is no visible vehicular traffic, so flow is light throughout. On the right side near the curb ahead, a pedestrian wearing white pants walks toward the ego vehicle along the sidewalk, close to the roadway and potentially approaching the vehicle's path. Beside them, another pedestrian also walks toward the ego vehicle on the right sidewalk, glancing toward the street. Farther ahead on the left, a pedestrian walks away along the left sidewalk and remains clear of the lane. No signals or regulatory signs are salient.", "hazard_reasoning": "There is a pedestrian wearing white pants and walking towards the ego car, on the right side of the road. The driver should be aware because the pedestrian may step into the path unexpectedly."}
{"id": "train_06191", "split": "train", "clip_key": "2020-0228-150133_066595_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "066595"}, "frames": ["2020-0228-150133_066595_movie_t-3.jpg", "2020-0228-150133_066595_movie_t-2.jpg", "2020-0228-150133_066595_movie_t-1.jpg", "2020-0228-150133_066595_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement and a right-side gore is shown, with same-direction traffic heavy and slow. The gray sedan directly ahead in the ego lane slows because of congestion and sets the pace. Farther ahead in the same lane, a white box truck queues in stop-and-go traffic, reinforcing the slowdown. Adjacent-lane traffic, including a blue car on the left and a white van on the right, crawls beside the ego vehicle and narrows gaps for lane changes. Overhead blue direction boards for Route 8 point toward Oizumi, Yahara, Ogikubo, and Kitamachi.", "hazard_reasoning": "There is a gray sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. Driver should reduce speed to maintain a safe following distance and avoid collision with the slowing vehicle."}
{"id": "train_06192", "split": "train", "clip_key": "2020-0129-144857_022020_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "022020"}, "frames": ["2020-0129-144857_022020_movie_t-3.jpg", "2020-0129-144857_022020_movie_t-2.jpg", "2020-0129-144857_022020_movie_t-1.jpg", "2020-0129-144857_022020_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to the merging hatchback", "environment_perception": "An urban multilane road runs under an elevated structure with smooth pavement and light-to-moderate same-direction traffic. A silver hatchback ahead on the left drifts right and cuts into the ego lane, edging in front and briefly constraining the pace. Farther ahead in the center lane, a small white car continues straight at a steady speed, acting as the lead vehicle in the queue. A dark sedan ahead to the right proceeds straight in its lane without moving toward the ego path. Pedestrians travel along the left sidewalk behind a guardrail and remain clear of the roadway. A traffic signal above shows green, and traffic continues through.", "hazard_reasoning": "There is a silver hatchback in the left lane, cutting in to the ego lane. The hatchback's sudden merge into your path creates a risk of collision, so you should yield to allow it to complete the maneuver safely."}
{"id": "train_06193", "split": "train", "clip_key": "2020-0204-150838_065011_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "065011"}, "frames": ["2020-0204-150838_065011_movie_t-3.jpg", "2020-0204-150838_065011_movie_t-2.jpg", "2020-0204-150838_065011_movie_t-1.jpg", "2020-0204-150838_065011_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided expressway with two lanes in the ego direction runs beneath an elevated structure; the pavement looks smooth and traffic is moderate. Ahead, a black dump truck in the ego lane slows, constraining the ego car's speed. Slightly ahead to the left, a white box truck cruises in the adjacent lane at a similar pace, occupying the gap the ego might use. To the left near the camera, a green truck moves alongside in the adjacent lane, further limiting room to merge. An overhead blue guide sign indicates an interchange ahead in 300 m.", "hazard_reasoning": "There is a black dump truck slowing in front of the ego car, in the ego lane. Because the truck is decelerating ahead in the same lane, the driver should slow down to maintain a safe following distance and avoid collision."}
{"id": "train_06194", "split": "train", "clip_key": "titan_clip_637_000552_movie", "source": {"subset": "titan", "scenario": "clip_637", "frame": "000552"}, "frames": ["titan_clip_637_000552_movie_t-3.jpg", "titan_clip_637_000552_movie_t-2.jpg", "titan_clip_637_000552_movie_t-1.jpg", "titan_clip_637_000552_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cyclist.", "environment_perception": "An urban side street with no centerline forms a very narrow two-way roadway; the pavement looks smooth and traffic is light while parked vehicles on the right edge further constrict the lane. Ahead on the right side, an oncoming cyclist wearing a white T-shirt pedals toward the vehicle near the curb, likely to pass close in the opposing direction. On the near right edge, two pedestrians walk toward the camera beside vending machines, stepping partly into the roadway and reducing clearance around the cyclist's approach. No signals or notable signs are visible.", "hazard_reasoning": "There is a cyclist wearing a white t-shirt, cycling on the right side of the road, towards the ego car. You should manoeuvre carefully around the cyclist because the parked truck and narrow street limit available space and visibility."}
{"id": "train_06195", "split": "train", "clip_key": "titan_clip_175_000048_movie", "source": {"subset": "titan", "scenario": "clip_175", "frame": "000048"}, "frames": ["titan_clip_175_000048_movie_t-3.jpg", "titan_clip_175_000048_movie_t-2.jpg", "titan_clip_175_000048_movie_t-1.jpg", "titan_clip_175_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious", "environment_perception": "An urban two-way street with a single lane in each direction approaches a cross intersection with a zebra crossing; the ego travels in the left lane, the pavement is smooth, and traffic is light with no signals visible. On the left near the crosswalk, a pedestrian in black pants carrying an umbrella walks toward the ego car and steps into the ego lane, potentially entering its path. At the left foreground, another pedestrian begins crossing ahead from left to right across the ego lane, constraining the approach. In the cross street to the left, a white van waits at the intersection and could enter the ego lane after the crossing. A black sedan is parked along the right curb near the corner.", "hazard_reasoning": "A pedestrian wearing black pants, carrying an umbrella, and walking on the left side of the road, towards the ego car. The pedestrian is moving into the vehicle's path, so you should be cautious to anticipate their crossing."}
{"id": "train_06196", "split": "train", "clip_key": "titan_clip_1349_000162_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1349_000162_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1349_000162_movie_t-3_augB1.jpg", "titan_clip_1349_000162_movie_t-2_augB1.jpg", "titan_clip_1349_000162_movie_t-1_augB1.jpg", "titan_clip_1349_000162_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "A narrow urban two-way street with no center line and fair asphalt runs between buildings, with a low fence and rows of parked scooters on the left; traffic is light. A silver sedan ahead in the ego lane moves slowly toward a small junction, setting the pace. On the right, a pedestrian wearing a white T-shirt and black pants steps off the curb and crosses from right to left ahead, entering the ego lane. Another pedestrian walks along the right edge by the building without deviating into the roadway. A triangular regulatory sign is visible at the junction ahead.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and black pants, and crossing the street from right to left, on the right side of the road. The pedestrian is entering the lane ahead, so the driver should yield to avoid a potential collision."}
{"id": "train_06197", "split": "train", "clip_key": "2020-0203-154554_043378_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "043378"}, "frames": ["2020-0203-154554_043378_movie_t-3.jpg", "2020-0203-154554_043378_movie_t-2.jpg", "2020-0203-154554_043378_movie_t-1.jpg", "2020-0203-154554_043378_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene runs under elevated expressway structures on a two-way road with a double yellow centerline and concrete side barriers; the dry pavement curves gently right and traffic is light. A gray hatchback directly ahead in the left-side ego lane slows, so the ego car follows at a reduced pace. Farther ahead in the same direction, another car proceeds steadily through the curve and remains well ahead. In the opposite lane, an oncoming car approaches and passes while staying separated by the centerline. An overhead blue guide sign for Route 20 shows Kofu 122 km, Hachioji 34 km, and Takaido 4 km.", "hazard_reasoning": "There is a gray hatchback slowing in front of the ego car, in the ego lane. The hatchback's sudden deceleration may force the driver to brake quickly to maintain a safe following distance."}
{"id": "train_06198", "split": "train", "clip_key": "titan_clip_620_000252_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_620_000252_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_620_000252_movie_t-3_augB1.jpg", "titan_clip_620_000252_movie_t-2_augB1.jpg", "titan_clip_620_000252_movie_t-1_augB1.jpg", "titan_clip_620_000252_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban residential street in Japan with a narrow two-way carriageway and no median, bordered by right-side guardrails and a coned walkway on the left, has smooth pavement and light traffic as the ego travels in the left lane through a gentle right bend. Ahead on the right edge, a group of three pedestrians walk toward the vehicle along the shoulder, moving around a parked vehicle and possibly stepping into the lane. A white mini truck is stopped on the right near the guardrail, encroaching on the travel lane and narrowing the path.", "hazard_reasoning": "There is a group of three pedestrians walking along the right side of the road, around a parked vehicle, toward the ego car. The group of pedestrians is approaching the vehicle's path, requiring the driver to carefully maneuver around them to avoid potential collision."}
{"id": "train_06199", "split": "train", "clip_key": "2020-0207-101955_107325_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "107325"}, "frames": ["2020-0207-101955_107325_movie_t-3.jpg", "2020-0207-101955_107325_movie_t-2.jpg", "2020-0207-101955_107325_movie_t-1.jpg", "2020-0207-101955_107325_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop promptly to avoid collision", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with smooth asphalt and heavy stop-and-go traffic; only same-direction lanes are visible and no clear median appears. A blue hatchback immediately ahead in the ego lane is stopped because of congestion, holding the ego vehicle. To the left-front, a small flatbed truck with a green tarp inches forward in the adjacent lane, staying close to the ego's front quarter and affecting available gaps. Farther ahead, a tall box truck queues slowly in the center of the stream, contributing to the backup. In the right lanes, a red hatchback and a white minivan are halted or creeping beside the ego, limiting opportunities to change lanes. Overhead viaduct pillars and shadows span the roadway, and no salient signals or speed signs are visible.", "hazard_reasoning": "There is a blue hatchback stopped in front of the ego car, because of traffic congestion ahead. The driver should stop promptly to avoid collision with the halted vehicle ahead due to the congestion."}
{"id": "train_06200", "split": "train", "clip_key": "2020-0217-110854_057453_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "057453"}, "frames": ["2020-0217-110854_057453_movie_t-3.jpg", "2020-0217-110854_057453_movie_t-2.jpg", "2020-0217-110854_057453_movie_t-1.jpg", "2020-0217-110854_057453_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial runs under an elevated structure with two same-direction lanes and a right-side guardrail; the pavement is dry and traffic is slow to stopped. A silver van directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle at a standstill. In the adjacent left lane, a white sedan just ahead creeps forward, passing the stopped line of the ego lane. Farther ahead in that lane, a white sports car continues slowly with the queue without affecting the ego path.", "hazard_reasoning": "A silver van stopped in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe distance and obey the red signal."}
{"id": "train_06201", "split": "train", "clip_key": "titan_clip_1094_000450_movie", "source": {"subset": "titan", "scenario": "clip_1094", "frame": "000450"}, "frames": ["titan_clip_1094_000450_movie_t-3.jpg", "titan_clip_1094_000450_movie_t-2.jpg", "titan_clip_1094_000450_movie_t-1.jpg", "titan_clip_1094_000450_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrians", "environment_perception": "A narrow two-way urban side street runs between buildings, the asphalt dry and the overall vehicle flow light, though a stopped truck on the right edge reduces usable width. Ahead in the middle of the road, two pedestrians wearing black and gray shirts walk toward the right side, occupying the path where the ego vehicle would pass. On the right beside the truck, a worker in a reflective vest stands by an orange cone close to the carriageway, further constricting the lane. On the left near a storefront, a small group of pedestrians with bicycles stands at the curb, some edging into the roadway and limiting clearance. A parking sign is visible near the upcoming cross street.", "hazard_reasoning": "There are two pedestrians wearing black and gray shirts, and walking to the right side, in the middle of the road. Drivers should manoeuvre carefully around these pedestrians as they are crossing within the driving lane."}
{"id": "train_06202", "split": "train", "clip_key": "titan_clip_609_000030_movie", "source": {"subset": "titan", "scenario": "clip_609", "frame": "000030"}, "frames": ["titan_clip_609_000030_movie_t-3.jpg", "titan_clip_609_000030_movie_t-2.jpg", "titan_clip_609_000030_movie_t-1.jpg", "titan_clip_609_000030_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the white van", "environment_perception": "A narrow urban two-way street with no center line runs between buildings; the stone-textured pavement is dry and traffic is light with no opposing vehicles visible. Ahead in the ego lane along the left curb, a white van is parked, constraining the usable lane and leaving a gap on the right to pass. On the right sidewalk farther ahead, several pedestrians walk past storefronts, one near the curb slowing by a gap between cones and potentially edging close to the roadway. A pedestrian on the left sidewalk near the van walks toward the camera along the curb but remains off the road. Orange safety cones line the right roadside beside a building, slightly narrowing the edge.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane. This obstruction requires the driver to manoeuvre carefully around the vehicle to avoid collision and maintain safe lane position."}
{"id": "train_06203", "split": "train", "clip_key": "2020-0131-135401_004858_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "004858"}, "frames": ["2020-0131-135401_004858_movie_t-3.jpg", "2020-0131-135401_004858_movie_t-2.jpg", "2020-0131-135401_004858_movie_t-1.jpg", "2020-0131-135401_004858_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban two-way road with one lane per direction and a center line runs between buildings, the pavement smooth and traffic otherwise light. A white box truck is stopped directly ahead in the ego lane, blocking the path and constraining the ego vehicle's pace. On the left sidewalk, one pedestrian near the camera walks toward us while two farther ahead walk away, all staying on the sidewalk and not entering the road. An overhead sign shows 40 as the posted speed limit, and a right-side guardrail and curb leave little room to pass.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The truck's stationary position obstructs your path and limits visibility ahead, so you must be prepared to halt to avoid a collision."}
{"id": "train_06204", "split": "train", "clip_key": "2020-0131-135401_011942_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "011942"}, "frames": ["2020-0131-135401_011942_movie_t-3.jpg", "2020-0131-135401_011942_movie_t-2.jpg", "2020-0131-135401_011942_movie_t-1.jpg", "2020-0131-135401_011942_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane each way runs between mid-rise buildings, divided by a solid yellow centerline on dry, well-kept asphalt; traffic is light to moderate and begins to move as the light changes. A white dump truck carrying soil is directly ahead in the ego lane and accelerates through the intersection because the overhead signal shows green, setting the ego car's pace. An oncoming black car approaches in its lane on the right side of view and continues straight past the junction without conflict. Several cars stand along the right curb beyond the crosswalk, but they remain outside the ego path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06205", "split": "train", "clip_key": "2020-0203-154554_004433_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "004433"}, "frames": ["2020-0203-154554_004433_movie_t-3.jpg", "2020-0203-154554_004433_movie_t-2.jpg", "2020-0203-154554_004433_movie_t-1.jpg", "2020-0203-154554_004433_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection comes into view with smooth pavement and no visible median, and traffic is light with vehicles stopped at a red signal. Several pedestrians are directly ahead in the zebra crosswalk, moving right-to-left and toward the ego car, continuing across because the vehicle light is red and they occupy the ego path. More pedestrians step off the right curb and proceed across in front of the ego lane, extending the crossing. On the far side to the right, a black van and a few cars wait at the stop line, remaining stationary while the crossing completes under the red signal.", "hazard_reasoning": "There are pedestrians crossing the crosswalk, walking toward the ego car, because of the red light. The driver must stop because pedestrians are entering the vehicle's path and have the right of way, preventing a collision."}
{"id": "train_06206", "split": "train", "clip_key": "titan_clip_897_000696_movie", "source": {"subset": "titan", "scenario": "clip_897", "frame": "000696"}, "frames": ["titan_clip_897_000696_movie_t-3.jpg", "titan_clip_897_000696_movie_t-2.jpg", "titan_clip_897_000696_movie_t-1.jpg", "titan_clip_897_000696_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with no clear lane markings shows worn asphalt and slow flow due to delivery activity. A white box truck ahead in the same direction proceeds slowly near the center, constraining the ego vehicle's pace. A large truck is stopped along the left curb near the camera, narrowing the passage for same-direction travel. There is a woman wearing a white shirt, carrying a backpack, walking on the right side of the road toward the ego car because the sidewalk is crowded, and she may edge into the lane. Additional pedestrians, bollards, and rows of parked bicycles line the right side, further reducing clearance.", "hazard_reasoning": "There is a woman wearing a white shirt, carrying a backpack, walking on the right side of the road, towards the ego car, because the sidewalk is crowded. The driver should slow down as the pedestrian may step into the roadway unexpectedly due to limited sidewalk space."}
{"id": "train_06207", "split": "train", "clip_key": "2020-0131-135401_029189_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "029189"}, "frames": ["2020-0131-135401_029189_movie_t-3.jpg", "2020-0131-135401_029189_movie_t-2.jpg", "2020-0131-135401_029189_movie_t-1.jpg", "2020-0131-135401_029189_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban intersection with one lane each way and no median sits among mid-rise buildings, the dry pavement in good condition and cross traffic moving at a moderate flow while the ego approach waits. Ahead, a pedestrian pushing a stroller crosses the zebra crosswalk from right toward the left directly in front of the ego lane, proceeding because the signal for this approach is red. Several cars travel laterally through the junction, including a white sedan passing left to right across the ego path, occupying the intersection while the ego vehicle remains stopped. The overhead traffic lights facing the ego lane display red.", "hazard_reasoning": "A pedestrian pushing a stroller is crossing at the pedestrian crosswalk to the left side of the road, because of the red light. The driver should stop to avoid collision with the pedestrian and comply with the traffic signal, especially since parked trucks reduce sight visibility."}
{"id": "train_06208", "split": "train", "clip_key": "2020-0131-103016_079055_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "079055"}, "frames": ["2020-0131-103016_079055_movie_t-3.jpg", "2020-0131-103016_079055_movie_t-2.jpg", "2020-0131-103016_079055_movie_t-1.jpg", "2020-0131-103016_079055_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane road curves left with a hatched divider and left-side barrier, the pavement dry and smooth as traffic moves in slow, moderate-to-heavy flow among high-rise buildings. A white van drives ahead in the ego lane at a steady pace, effectively setting the ego vehicle's speed. To the right, a black SUV in the adjacent lane edges forward and continues past while running parallel to the ego path. Farther ahead, several large trucks occupy the lanes and crawl toward a bottleneck, compressing traffic. On the far right shoulder, a large service vehicle stands stationary beside the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06209", "split": "train", "clip_key": "titan_clip_441_000402_movie", "source": {"subset": "titan", "scenario": "clip_441", "frame": "000402"}, "frames": ["titan_clip_441_000402_movie_t-3.jpg", "titan_clip_441_000402_movie_t-2.jpg", "titan_clip_441_000402_movie_t-1.jpg", "titan_clip_441_000402_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for crossing pedestrians", "environment_perception": "A narrow urban side street with paver blocks and no center line runs between mid-rise buildings; there is no median, the pavement looks sound, and traffic is light with no moving vehicles. Ahead in the ego lane, three pedestrians cross from both the right and left without a marked crosswalk, directly in front of the car and temporarily blocking its path. Farther down the street a few people walk along the sidewalks without entering the roadway. A red prohibition sign stands at the right corner, and parked cars and bicycles line the sides.", "hazard_reasoning": "There are three pedestrians, in the ego lane, crossing the street, in front of the ego car, from the right and left sides of the road, because there's no crosswalk. The pedestrians are crossing without a designated crosswalk directly in front of the vehicle, so stopping is necessary to avoid a collision."}
{"id": "train_06210", "split": "train", "clip_key": "2020-0207-101955_003383_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "003383"}, "frames": ["2020-0207-101955_003383_movie_t-3.jpg", "2020-0207-101955_003383_movie_t-2.jpg", "2020-0207-101955_003383_movie_t-1.jpg", "2020-0207-101955_003383_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban commercial street with multiple same-direction lanes and no median appears well paved, and traffic is moderate with a gentle slowdown ahead. The lane ahead shows a large painted X and the marking 8-20. A white sedan directly ahead in the ego lane slows because a box truck farther ahead is decelerating, which constrains the ego vehicle's pace. The box truck continues slowly straight and compresses a short queue in the lane. A small truck is stopped at the left curb slightly ahead, outside the travel lane but close to it.", "hazard_reasoning": "There is a white sedan slowing in the ego lane, in front of the ego car, because of a truck slowing down ahead. The white sedan's reduced speed may require the driver to decelerate to maintain a safe following distance."}
{"id": "train_06211", "split": "train", "clip_key": "2020-0214-102601_085019_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "085019"}, "frames": ["2020-0214-102601_085019_movie_t-3.jpg", "2020-0214-102601_085019_movie_t-2.jpg", "2020-0214-102601_085019_movie_t-1.jpg", "2020-0214-102601_085019_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane two-way street with a single yellow centerline and smooth pavement leads to a signalized intersection, and traffic is light and begins to move. A black SUV directly ahead in the ego lane accelerates from the stop line as the light turns green, setting the pace for the ego vehicle. A white kei car approaches in the oncoming lane on the driver's right and continues straight through the intersection. Several pedestrians gather on the right sidewalk at the crosswalk near the corner, close to the ego vehicle's path.", "hazard_reasoning": "There is a black SUV accelerating in front of the ego car, in the ego lane, because of a green traffic light. Following the vehicle ahead helps maintain smooth traffic flow and ensures you proceed safely through the intersection."}
{"id": "train_06212", "split": "train", "clip_key": "2020-0213-143552_038630_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "038630"}, "frames": ["2020-0213-143552_038630_movie_t-3.jpg", "2020-0213-143552_038630_movie_t-2.jpg", "2020-0213-143552_038630_movie_t-1.jpg", "2020-0213-143552_038630_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes, a curb and rail on the right, and smooth asphalt; traffic is light to moderate and generally flowing. A gray box truck directly ahead in the ego lane slows, matching the caption and briefly constraining the ego vehicle's pace. A white van farther ahead in the right lane continues straight at a steady speed and stays out of the ego path. A few more vehicles travel farther ahead in the right lanes without influence. Overhead gantries and commercial signs are visible, but no salient traffic signals or speed postings appear, and no pedestrians or cyclists are present.", "hazard_reasoning": "There is a gray truck slowing down in the ego lane. Since the gray truck is slowing down, you should slow down to maintain a safe following distance and prevent a collision."}
{"id": "train_06213", "split": "train", "clip_key": "2020-0205-103411_052321_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "052321"}, "frames": ["2020-0205-103411_052321_movie_t-3.jpg", "2020-0205-103411_052321_movie_t-2.jpg", "2020-0205-103411_052321_movie_t-1.jpg", "2020-0205-103411_052321_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection with smooth pavement and light-to-moderate, mostly stopped traffic. A black SUV-like van directly ahead in the ego lane waits at the signal, holding the ego vehicle. In the lane to the left, a dark station wagon is stopped slightly behind and remains alongside without changing lanes. On the far right at the corner, a cyclist rides through the intersection along the curb area, staying outside the ego lane. A pedestrian overpass spans the roadway, and a metal fence lines the near-side curb.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, because of the red traffic light. The driver should stop to maintain a safe distance and avoid rear-ending the stopped vehicle."}
{"id": "train_06214", "split": "train", "clip_key": "titan_clip_429_000330_movie", "source": {"subset": "titan", "scenario": "clip_429", "frame": "000330"}, "frames": ["titan_clip_429_000330_movie_t-3.jpg", "titan_clip_429_000330_movie_t-2.jpg", "titan_clip_429_000330_movie_t-1.jpg", "titan_clip_429_000330_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming traffic", "environment_perception": "A narrow urban two-way street with single lanes and no median runs between close buildings; pavement is smooth and traffic is light as the ego vehicle proceeds in the left lane. A silver sedan is stopped along the left curb with its right indicator flashing, protruding slightly into the ego lane. A cyclist approaches in the oncoming lane near the center of the road, riding steadily toward the camera and passing close to the ego path. Farther ahead in the same direction, a small blue truck continues away along the lane. A pedestrian walks on the right sidewalk, and a painted green bike lane lines the right edge.", "hazard_reasoning": "There is a silver sedan parked on the left side of the road, indicating right. The parked silver sedan narrows the roadway, requiring the driver to yield and ensure safe passage around it."}
{"id": "train_06215", "split": "train", "clip_key": "2020-0220-102630_028600_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "028600"}, "frames": ["2020-0220-102630_028600_movie_t-3.jpg", "2020-0220-102630_028600_movie_t-2.jpg", "2020-0220-102630_028600_movie_t-1.jpg", "2020-0220-102630_028600_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way road with one lane per direction and smooth pavement carries heavy, crawling traffic due to a work area ahead. A black scooter directly ahead in the ego lane stops because a truck is unloading at the left curb, and cones narrow the lane. Another scooter farther ahead creeps past the cones to bypass the obstruction, holding up vehicles behind. A white hatchback ahead slightly to the right also slows in the same direction, queuing before the work zone and constraining the pace. Workers stand beside the truck and orange cones block part of the lane.", "hazard_reasoning": "There is a black scooter stopped in front of the ego car, in the ego lane, because of the truck unloading ahead. The scooter's sudden stop creates a risk of collision if the driver does not reduce speed promptly, so the driver should stop immediately under this situation."}
{"id": "train_06216", "split": "train", "clip_key": "2020-0220-102630_002007_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "002007"}, "frames": ["2020-0220-102630_002007_movie_t-3.jpg", "2020-0220-102630_002007_movie_t-2.jpg", "2020-0220-102630_002007_movie_t-1.jpg", "2020-0220-102630_002007_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multilane intersection with smooth asphalt lies under an elevated expressway, with an approach to a ramp rising ahead; traffic is light. A black van directly ahead in the ego lane slows and makes a right turn across the intersection in front of the ego car, temporarily occupying the ego path. Two vans farther ahead to the left proceed straight in their lanes and continue away, not constraining the ego vehicle. Several cars sit on the right side beneath the overpass, appearing parked and outside the travel lanes. Overhead directional boards span the road, and wide zebra crossings mark the junction.", "hazard_reasoning": "There is a black van making a right turn in front of the ego car. Because the van will cross the ego-vehicle's path, the driver should follow the vehicle ahead to maintain a safe distance and adapt to its maneuver."}
{"id": "train_06217", "split": "train", "clip_key": "2020-0226-140503_101031_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "101031"}, "frames": ["2020-0226-140503_101031_movie_t-3.jpg", "2020-0226-140503_101031_movie_t-2.jpg", "2020-0226-140503_101031_movie_t-1.jpg", "2020-0226-140503_101031_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way road with wide zebra crossings stretches through mid-rise buildings, the asphalt dry and in good condition, and traffic flows at a moderate pace. A white truck in the ego lane ahead slows through the intersection, constraining the ego car's speed. Farther ahead, a dark sedan continues straight in the adjacent same-direction lane at a steady pace without merging. On the opposite side, oncoming vehicles including a white van proceed through their lanes to the right of the center, remaining separate from the ego path.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's deceleration may force the driver to brake sharply, so slowing down helps maintain a safe following distance."}
{"id": "train_06218", "split": "train", "clip_key": "2020-0205-103411_031304_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "031304"}, "frames": ["2020-0205-103411_031304_movie_t-3.jpg", "2020-0205-103411_031304_movie_t-2.jpg", "2020-0205-103411_031304_movie_t-1.jpg", "2020-0205-103411_031304_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-lane road carries same-direction traffic with curbside railings and smooth asphalt, and the flow is moderate as vehicles adjust around a stopped vehicle ahead. A blue sedan directly ahead shifts from the ego lane to the right lane to pass a small parked truck near the left curb, momentarily slowing the ego car. Slightly ahead to the right, a dark sedan continues straight in the right lane alongside, limiting space during the maneuver. Farther ahead, a black minivan in the right lane proceeds straight and sets the pace. The parked vehicle remains the main obstruction.", "hazard_reasoning": "There is a blue sedan changing lanes from the ego lane to the right lane, because of the parked vehicle ahead. The blue sedan's sudden lane change could cut off the ego-vehicle's path, so the driver should slow down to maintain a safe distance and avoid a collision under this situation."}
{"id": "train_06219", "split": "train", "clip_key": "2020-0203-154554_079993_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "079993"}, "frames": ["2020-0203-154554_079993_movie_t-3.jpg", "2020-0203-154554_079993_movie_t-2.jpg", "2020-0203-154554_079993_movie_t-1.jpg", "2020-0203-154554_079993_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision", "environment_perception": "An urban two-way arterial with two same-direction lanes is lined with buildings and bare trees; pavement looks dry and intact, and traffic is heavy with stop-and-go flow. Directly ahead in the ego lane, a white sedan is stopped in a queue, effectively holding the ego vehicle because of congestion ahead. In the left curbside lane, a black sedan slightly ahead also slows with the queue in the same direction, keeping pace with the car in front. In the oncoming lane to the right, a dark minivan approaches steadily within its lane and remains separated by a painted hatched median.", "hazard_reasoning": "There is a gray sedan stopped in the ego lane because of traffic congestion ahead. The driver needs to stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_06220", "split": "train", "clip_key": "titan_clip_40_000426_movie", "source": {"subset": "titan", "scenario": "clip_40", "frame": "000426"}, "frames": ["titan_clip_40_000426_movie_t-3.jpg", "titan_clip_40_000426_movie_t-2.jpg", "titan_clip_40_000426_movie_t-1.jpg", "titan_clip_40_000426_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way carriageway lacks lane markings, and the brick-patterned pavement appears dry; traffic is light and slow. A pedestrian in a white shirt carrying a backpack walks ahead in the middle of the road, moving away along the ego vehicle's path. A small dark van further ahead proceeds in the same direction at low speed, effectively setting the pace. On the right edge, another pedestrian by a line of parked vans walks near the roadway and may step into the ego lane. Multiple vans are parked along the right, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and carrying a backpack, walking in the middle of the road, away from the ego car. The driver should slow down to maintain a safe distance and prevent a collision with the pedestrian."}
{"id": "train_06221", "split": "train", "clip_key": "titan_clip_289_000552_movie", "source": {"subset": "titan", "scenario": "clip_289", "frame": "000552"}, "frames": ["titan_clip_289_000552_movie_t-3.jpg", "titan_clip_289_000552_movie_t-2.jpg", "titan_clip_289_000552_movie_t-1.jpg", "titan_clip_289_000552_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Yield to the oncoming cyclist", "environment_perception": "An urban commercial street approaches a small unsignalized intersection beneath a railway overpass; the narrow two-way pavement is in good condition and traffic is light. A cyclist with a small trailer crosses ahead from right to left through the intersection, riding in the roadway since there is no bicycle lane, and briefly occupies the ego vehicle's path. A male pedestrian from the right steps into the crosswalk in front of the ego lane and walks left across the mouth of the intersection. A second pedestrian stands on the right sidewalk near the corner. Shops line both sides and the overpass structure casts shade and partially limits the view beyond the intersection.", "hazard_reasoning": "There is a cyclist wearing a red and black shirt, cycling near the intersection, from the right side to the left side, because there is no bicycle lane. The cyclist may unexpectedly cross the vehicle's path, so the driver should yield to avoid collision."}
{"id": "train_06222", "split": "train", "clip_key": "titan_clip_297_000144_movie", "source": {"subset": "titan", "scenario": "clip_297", "frame": "000144"}, "frames": ["titan_clip_297_000144_movie_t-3.jpg", "titan_clip_297_000144_movie_t-2.jpg", "titan_clip_297_000144_movie_t-1.jpg", "titan_clip_297_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "An urban residential two-way street with a single narrow lane each direction has no median and dry, intact pavement, and traffic is light as the road gently bends right ahead. A pedestrian wearing beige pants and white shoes stands on the right edge ahead near the building frontage, stationary at the curb and close to the travel lane, and may step into the ego lane. No other moving vehicles are nearby, and no salient signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing beige pants and white shoes standing on the right side of the road. The pedestrian could step into the lane unexpectedly, so the driver should be aware to avoid a potential collision."}
{"id": "train_06223", "split": "train", "clip_key": "2020-0220-102630_017740_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "017740"}, "frames": ["2020-0220-102630_017740_movie_t-3.jpg", "2020-0220-102630_017740_movie_t-2.jpg", "2020-0220-102630_017740_movie_t-1.jpg", "2020-0220-102630_017740_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban multi-lane street carries heavy, slow traffic; the ego-vehicle proceeds in the left of two same-direction lanes on smooth asphalt with no median visible. A white sedan directly ahead in the ego lane slows and inches forward because of congestion, constraining the ego car's pace. To the right, a line of vans and small trucks creeps along the adjacent lane in parallel, leaving few openings and keeping the flow staggered. Farther ahead, a tall box truck in the same direction sits within the queue and limits the forward view. No oncoming traffic is visible in the scene.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the decelerating vehicle ahead."}
{"id": "train_06224", "split": "train", "clip_key": "titan_clip_1188_000108_movie", "source": {"subset": "titan", "scenario": "clip_1188", "frame": "000108"}, "frames": ["titan_clip_1188_000108_movie_t-3.jpg", "titan_clip_1188_000108_movie_t-2.jpg", "titan_clip_1188_000108_movie_t-1.jpg", "titan_clip_1188_000108_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban back street with a single narrow lane is paved with stone blocks, has no median, and carries light, slow traffic between tightly spaced buildings. A silver car ahead along the left curb is stopped, partly obstructing the lane and limiting the available width. A pedestrian in a blue shirt and beige pants carrying a shoulder bag crosses from right to left in front, briefly taking the lane and forcing a pause. Another pedestrian farther ahead walks away along the middle of the roadway, staying in the vehicle's path and constraining speed. A red cone and tight clearances at the right edge further narrow the passage.", "hazard_reasoning": "There is a pedestrian in a blue shirt and beige pants, carrying a shoulder bag, and crossing the street from right to left, in front of the ego-car. The driver should slow down to allow the pedestrian to clear the lane safely."}
{"id": "train_06225", "split": "train", "clip_key": "titan_clip_291_000570_movie", "source": {"subset": "titan", "scenario": "clip_291", "frame": "000570"}, "frames": ["titan_clip_291_000570_movie_t-3.jpg", "titan_clip_291_000570_movie_t-2.jpg", "titan_clip_291_000570_movie_t-1.jpg", "titan_clip_291_000570_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban side street with a single narrow undivided lane and no centerline runs between closely spaced shops; the dry asphalt is smooth, and traffic is light with no nearby vehicles. A pedestrian ahead on the left walks away from the camera along the roadway while carrying shopping bags, potentially edging into the ego path. Another person stands at a storefront farther left, lingering near the entrance without stepping into the lane. A freestanding shop sign and display protrude from the right-hand storefront into the roadway, slightly narrowing the usable lane.", "hazard_reasoning": "No potential hazards are present, so maintain normal driving and stay attentive."}
{"id": "train_06226", "split": "train", "clip_key": "2020-0127-132751_040042_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "040042"}, "frames": ["2020-0127-132751_040042_movie_t-3.jpg", "2020-0127-132751_040042_movie_t-2.jpg", "2020-0127-132751_040042_movie_t-1.jpg", "2020-0127-132751_040042_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban depressed roadway descends toward an underpass, with one downhill lane for the ego vehicle and two oncoming lanes to the right behind a guardrail; the pavement is dry and the flow is light. A small box truck ahead in the ego lane continues downhill toward the underpass, setting the pace. On the adjacent oncoming side to the right, a white van travels uphill toward the camera behind the barrier. A large white refrigerated truck remains at the right edge of the oncoming carriageway near the foreground, outside the ego lane. Overhead pedestrian and road bridges span the trench, briefly limiting forward visibility as the road dips beneath them.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06227", "split": "train", "clip_key": "2020-0214-102601_078931_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "078931"}, "frames": ["2020-0214-102601_078931_movie_t-3.jpg", "2020-0214-102601_078931_movie_t-2.jpg", "2020-0214-102601_078931_movie_t-1.jpg", "2020-0214-102601_078931_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Start moving", "environment_perception": "A narrow urban two-way street with one lane per direction runs past storefronts, with smooth pavement, a green painted shoulder on the left, and an orange centerline; traffic is slow-moving. Directly ahead in the ego lane, a gray SUV starts to roll forward because a white box truck farther ahead resumes creeping, so the SUV follows at its pace. The white truck continues slowly along the same lane near the roadside market, constraining the queue. On the left beside the shop, a blue compact car stands in the shoulder close to the lane, positioned to pull out and potentially merge into the ego path.", "hazard_reasoning": "There is a gray SUV starting to move in front of the ego car in the ego lane because of the truck ahead. The driver should start moving to maintain safe following distance and keep traffic flowing smoothly."}
{"id": "train_06228", "split": "train", "clip_key": "2020-0204-103442_019919_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "019919"}, "frames": ["2020-0204-103442_019919_movie_t-3.jpg", "2020-0204-103442_019919_movie_t-2.jpg", "2020-0204-103442_019919_movie_t-1.jpg", "2020-0204-103442_019919_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road runs beneath elevated expressway structures, bordered by a concrete barrier on the right; the dry pavement shows a taper and traffic is heavy and mostly stopped. Ahead in the ego lane, a white SUV is fully stopped due to congestion and blocks the path. In the adjacent left lane, a black hatchback is also stopped alongside, limiting opportunities to pass. Farther ahead, queuing vehicles inch under the overpass. Overhead blue direction signs point toward Meguro and Higashinakano, and a merge warning is visible ahead near a ramp.", "hazard_reasoning": "There is a gray hatchback stopped in the ego lane because of traffic congestion. Because this vehicle is stopped ahead, the driver should stop to avoid a collision."}
{"id": "train_06229", "split": "train", "clip_key": "2020-0214-145407_020033_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "020033"}, "frames": ["2020-0214-145407_020033_movie_t-3.jpg", "2020-0214-145407_020033_movie_t-2.jpg", "2020-0214-145407_020033_movie_t-1.jpg", "2020-0214-145407_020033_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between office buildings, the pavement smooth, and traffic is heavy and largely stationary. A black hatchback directly ahead in the ego lane is stopped because congestion, including a box truck farther up the lane, blocks the way forward. To the left, a large red dump truck stands still alongside and slightly ahead, limiting any chance to merge left. On the right, a white van and a white sedan queue beside the ego vehicle with little movement, keeping it boxed in.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, because of traffic congestion ahead. The driver should stop promptly to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_06230", "split": "train", "clip_key": "titan_clip_1291_000216_movie", "source": {"subset": "titan", "scenario": "clip_1291", "frame": "000216"}, "frames": ["titan_clip_1291_000216_movie_t-3.jpg", "titan_clip_1291_000216_movie_t-2.jpg", "titan_clip_1291_000216_movie_t-1.jpg", "titan_clip_1291_000216_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van", "environment_perception": "An urban two-way road with one lane in each direction curves gently right, divided by a solid yellow centerline; the pavement looks smooth and traffic remains light. An oncoming black van approaches in the right-side lane near the centerline and passes without influencing the ego lane. Ahead on the left just beyond a small intersection, a white van is parked on the left side of the road behind the intersection, partly occupying the shoulder and narrowing space along the curb.", "hazard_reasoning": "There is a white van parked on the left side of the road behind an intersection. The parked van reduces available lane space, so the driver should manoeuvre carefully around it to avoid collision."}
{"id": "train_06231", "split": "train", "clip_key": "2020-0203-114632_024383_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "024383"}, "frames": ["2020-0203-114632_024383_movie_t-3.jpg", "2020-0203-114632_024383_movie_t-2.jpg", "2020-0203-114632_024383_movie_t-1.jpg", "2020-0203-114632_024383_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with opposing directions split by a painted median has smooth pavement and moderate flow as the car proceeds under a pedestrian overpass. A traffic signal ahead shows green. A white box truck is directly ahead in the ego lane, moving steadily through the green and setting the ego car's pace. To the right, a large coach bus in the adjacent same-direction lane draws slightly ahead, limiting any immediate rightward lane change. On the far right beyond the median, oncoming cars advance toward the camera in their lanes without affecting the ego's path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06232", "split": "train", "clip_key": "2020-0129-105040_059159_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "059159"}, "frames": ["2020-0129-105040_059159_movie_t-3.jpg", "2020-0129-105040_059159_movie_t-2.jpg", "2020-0129-105040_059159_movie_t-1.jpg", "2020-0129-105040_059159_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban street with red-painted edges and a zebra crosswalk runs uphill, with one lane each way and no median; pavement appears smooth and traffic is light. On the right edge ahead, a pedestrian in a brown coat walks toward the ego along the red shoulder and is close to the travel lane, so they may enter the ego path. Farther ahead in the same direction, a white car climbs the hill away from the ego at a steady pace. On the right side slightly ahead, a person with a stroller moves away along the curb, keeping to the edge. A white mini-truck is parked at the right curb near the crosswalk, narrowing the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a brown coat, walking on the right side of the road, towards the ego car. The pedestrian is walking towards the vehicle and may step into its path, so the driver should manoeuvre carefully around them to avoid a collision."}
{"id": "train_06233", "split": "train", "clip_key": "2020-0227-153144_022221_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "022221"}, "frames": ["2020-0227-153144_022221_movie_t-3.jpg", "2020-0227-153144_022221_movie_t-2.jpg", "2020-0227-153144_022221_movie_t-1.jpg", "2020-0227-153144_022221_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for the pedestrian", "environment_perception": "In a dense urban setting, the ego vehicle waits at a wide, signalized intersection on a multi-lane two-way road without a median; the pavement is dry and clean, and cross traffic flows steadily while the ego approach is stopped. Ahead of the hood, a pedestrian from the right walks left across the marked crosswalk in front of the ego car, directly occupying the lane. Several cars, including black sedans, move left to right across the junction ahead as cross traffic, filling the intersection and constraining the ego vehicle's path. On the left curb, a small group of pedestrians stands at the crosswalk, waiting to cross.", "hazard_reasoning": "There is a pedestrian crossing the intersection from the right side in front of the ego car, because it is a crosswalk. The driver needs to stop to allow the pedestrian to cross safely."}
{"id": "train_06234", "split": "train", "clip_key": "2020-0206-101736_044922_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "044922"}, "frames": ["2020-0206-101736_044922_movie_t-3.jpg", "2020-0206-101736_044922_movie_t-2.jpg", "2020-0206-101736_044922_movie_t-1.jpg", "2020-0206-101736_044922_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid colliding with vehicle ahead", "environment_perception": "An urban multi-lane arterial lined with tall buildings carries heavy, stop-and-go traffic on dry pavement, with a bollard-protected side lane along the right. Directly ahead in the ego lane, a cream hatchback is stopped with brake lights because congestion blocks the way, so the ego car queues behind it. To the left, a silver kei van in the adjacent same-direction lane inches forward beside the ego vehicle, constraining any lateral movement. On the right, a white van proceeds slowly within the bollard-separated lane, parallel to the ego path and not able to merge. Farther ahead, multiple trucks and vans stack under a pedestrian overpass, compressing the flow.", "hazard_reasoning": "There is a cream hatchback stopped in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should stop promptly to avoid colliding with the stationary hatchback."}
{"id": "train_06235", "split": "train", "clip_key": "2020-0204-150838_041700_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "041700"}, "frames": ["2020-0204-150838_041700_movie_t-3.jpg", "2020-0204-150838_041700_movie_t-2.jpg", "2020-0204-150838_041700_movie_t-1.jpg", "2020-0204-150838_041700_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban left-hand-traffic arterial with two same-direction lanes is divided from oncoming lanes by a fenced median; the pavement is smooth and traffic flows at a moderate, steady pace. A white van ahead in the ego lane continues straight at similar speed, leading the ego vehicle's path. In the adjacent right lane slightly farther ahead, another small white van proceeds forward in parallel without affecting the ego lane. Oncoming vehicles move smoothly beyond the median on the right, while pedestrians on the left sidewalk near shops stay clear of the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06236", "split": "train", "clip_key": "2020-0127-132751_030083_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "030083"}, "frames": ["2020-0127-132751_030083_movie_t-3.jpg", "2020-0127-132751_030083_movie_t-2.jpg", "2020-0127-132751_030083_movie_t-1.jpg", "2020-0127-132751_030083_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction runs between mid-rise buildings, the pavement dry and intact and traffic generally light. The ego vehicle proceeds in the left lane. A white box truck directly ahead in the ego lane accelerates, briefly controlling the ego car's pace as it pulls away. A yellow taxi at the left curb beside the ego moves slowly forward and may merge into the lane, creating a nearby lateral interaction. A metal fence lines the right edge, leaving only a narrow shoulder.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06237", "split": "train", "clip_key": "titan_clip_864_000522_movie", "source": {"subset": "titan", "scenario": "clip_864", "frame": "000522"}, "frames": ["titan_clip_864_000522_movie_t-3.jpg", "titan_clip_864_000522_movie_t-2.jpg", "titan_clip_864_000522_movie_t-1.jpg", "titan_clip_864_000522_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around cyclist", "environment_perception": "A narrow urban two-way street with a single lane each direction and no median runs between tight shopfronts; pavement is smooth and traffic is light. A cyclist in a white T-shirt approaches on the oncoming side along the right edge, riding toward the ego car because the sidewalk is narrow and could encroach into the center. A pedestrian ahead on the left walks away along the curb, close to the lane and narrowing clearance. Another pedestrian stands near a storefront on the right further ahead at the edge of the roadway, near the cyclist's path. A large 20 speed marking is painted on the centerline. Cones and a small work area narrow the right shoulder near the foreground, adding roadside clutter.", "hazard_reasoning": "There is a cyclist wearing a white t-shirt, cycling on the right side of the road, towards the ego car, because there is a narrow sidewalk. The driver should carefully manoeuvre around the cyclist due to limited space."}
{"id": "train_06238", "split": "train", "clip_key": "2020-0214-145407_062325_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "062325"}, "frames": ["2020-0214-145407_062325_movie_t-3.jpg", "2020-0214-145407_062325_movie_t-2.jpg", "2020-0214-145407_062325_movie_t-1.jpg", "2020-0214-145407_062325_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road approaches a signalized intersection with smooth pavement and solid yellow lane lines; traffic is heavy and initially stationary before creeping forward as the signal turns green. Directly ahead in the ego lane a white van remains stopped for a moment even though the light has just turned green, holding the ego car's pace. In the right adjacent lane a large dark van slightly ahead accelerates slowly alongside the queue. In the left adjacent lane a small white pickup ahead inches forward toward the intersection while maintaining its gap.", "hazard_reasoning": "There is a white van stopped in front of the ego car because the traffic light has just turned green. The stationary van despite the green signal increases the risk of a rear-end collision, so the driver should stop promptly to maintain a safe following distance and avoid impact."}
{"id": "train_06239", "split": "train", "clip_key": "2020-0226-140503_082688_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "082688"}, "frames": ["2020-0226-140503_082688_movie_t-3.jpg", "2020-0226-140503_082688_movie_t-2.jpg", "2020-0226-140503_082688_movie_t-1.jpg", "2020-0226-140503_082688_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and no physical median runs through dense buildings, and traffic in both directions is heavy and slow. The ego vehicle travels in the leftmost same-direction lane. A white hatchback directly ahead in the ego lane is stopped because of congestion ahead, holding the ego car at a standstill. In the adjacent left lane, a white minivan slightly ahead-left rolls forward slowly, remaining in lane alongside the ego vehicle. In the next lane to the right, a silver sedan and other cars move slowly straight ahead. On the far right, oncoming lanes carry a steady stream separated by lane markings. Overhead lane-use signs with straight arrows and a traffic signal are visible above the road.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_06240", "split": "train", "clip_key": "2020-0217-144444_012205_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "012205"}, "frames": ["2020-0217-144444_012205_movie_t-3.jpg", "2020-0217-144444_012205_movie_t-2.jpg", "2020-0217-144444_012205_movie_t-1.jpg", "2020-0217-144444_012205_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban street with a single left-hand lane curves gently right, bordered by sidewalk railings on the left and a low planted median on the right; the pavement is dry and traffic is light. A white mini truck and a black car travel ahead in the same lane, moving steadily through the bend and setting the pace. On the left side, a pedestrian wearing a uniform stands beside a traffic cone and a parked silver van at the curb, close to the travel lane and potentially entering or directing traffic. No signals or unusual signs are prominent in view, and there are no oncoming vehicles visible.", "hazard_reasoning": "There is a pedestrian wearing a uniform and standing next to a traffic cone and a parked silver van, on the left side of the road. Drivers should carefully manoeuvre around the pedestrian because they are close to the driving lane and partially obscured by the van and cone."}
{"id": "train_06241", "split": "train", "clip_key": "2020-0206-142535_005927_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-142535_005927_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-142535_005927_movie_t-3_augB1.jpg", "2020-0206-142535_005927_movie_t-2_augB1.jpg", "2020-0206-142535_005927_movie_t-1_augB1.jpg", "2020-0206-142535_005927_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with one lane each way runs between mid-rise buildings; the pavement looks clean and traffic is light, with construction barriers and cones along the left curb narrowing the shoulder. A small white flatbed truck travels ahead in the ego lane, and we follow behind it. An oncoming pink bus encroaches into the ego lane toward the camera to pass an obstruction, maneuvering around a parked vehicle on the right and briefly opposing our path. A black van is parked at the right curb, constricting the oncoming lane and prompting the bus's movement.", "hazard_reasoning": "There is a pink bus maneuvering in the ego lane, towards the ego car, because of a parked vehicle on the right. The bus's unexpected merge could cause a collision if you do not stop promptly."}
{"id": "train_06242", "split": "train", "clip_key": "2020-0226-140503_008278_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "008278"}, "frames": ["2020-0226-140503_008278_movie_t-3.jpg", "2020-0226-140503_008278_movie_t-2.jpg", "2020-0226-140503_008278_movie_t-1.jpg", "2020-0226-140503_008278_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction runs between tall buildings, divided from opposite traffic by a planted median with railings. The asphalt appears worn and patchy, and flow is moderate to heavy with a queue forming ahead. A gray sedan directly ahead in the ego lane slows due to traffic congestion ahead and constrains the ego vehicle's pace. A black taxi is stopped along the left curb near the ego car, occupying the curb lane without moving. On the far side of the median, oncoming vans and buses travel past steadily with no interaction. Overhead green direction signs hang above the road.", "hazard_reasoning": "There is a gray Sedan slowing down in the ego lane due to traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_06243", "split": "train", "clip_key": "2020-0203-114632_014715_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "014715"}, "frames": ["2020-0203-114632_014715_movie_t-3.jpg", "2020-0203-114632_014715_movie_t-2.jpg", "2020-0203-114632_014715_movie_t-1.jpg", "2020-0203-114632_014715_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial district with mid-rise buildings, the ego vehicle travels in the left lane of a two-way street with one lane each way, divided by a solid orange centerline and bordered by metal sidewalk railings. The pavement is dry and in good condition, and traffic flow is light with clear space ahead. Far ahead in the ego lane a small white car proceeds straight down a gentle slope, well outside immediate range. In the opposite lane several cars approach as oncoming traffic, remaining behind the centerline. Numerous pedestrians walk along both sidewalks close to the railings and shopfronts, and a few pause near side entries but none step toward the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06244", "split": "train", "clip_key": "titan_clip_629_000072_movie", "source": {"subset": "titan", "scenario": "clip_629", "frame": "000072"}, "frames": ["titan_clip_629_000072_movie_t-3.jpg", "titan_clip_629_000072_movie_t-2.jpg", "titan_clip_629_000072_movie_t-1.jpg", "titan_clip_629_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "A narrow urban two-way street without a centerline runs between close shopfronts, the pavement is smooth, and traffic is light with no moving vehicles. A pedestrian carrying a handbag and looking at a cellphone walks along the left edge toward the ego car, partly in the carriageway and along the ego path. Several pedestrians are farther ahead near the middle of the road moving away from the ego vehicle, which constrains its pace. Another pedestrian keeps to the right-side curb in the distance, proceeding in the same direction and close to the travel lane. No salient traffic signals or signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a handbag and looking at their cell phone, walking along the left side of the road, toward the ego car. The driver should carefully manoeuvre around them to avoid a potential collision since they may step into the lane unexpectedly while distracted."}
{"id": "train_06245", "split": "train", "clip_key": "titan_clip_67_000378_movie", "source": {"subset": "titan", "scenario": "clip_67", "frame": "000378"}, "frames": ["titan_clip_67_000378_movie_t-3.jpg", "titan_clip_67_000378_movie_t-2.jpg", "titan_clip_67_000378_movie_t-1.jpg", "titan_clip_67_000378_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian by bicycle", "environment_perception": "An urban back street with smooth pavement and no center line forms a narrow two-way road with no median, and traffic is very light with no moving vehicles in view. On the right side ahead, a pedestrian in a green shirt stands beside the curb attending a parked bicycle, remaining outside the travel lane. Near the left-side building entrance close to the ego vehicle, two pedestrians stand by the wall at the driveway opening, static and close to the roadway. Farther ahead along the left curb, a parked scooter and other bicycles remain stationary. Strong sunlight casts shadows from the buildings, and there are no salient signals or posted speeds visible.", "hazard_reasoning": "There is a pedestrian wearing a green shirt, standing on the right side of the road, away from the ego car, because they are attending their parked bicycle. The pedestrian may move into the lane while tending their bicycle, so drivers should stay vigilant."}
{"id": "train_06246", "split": "train", "clip_key": "2020-0213-143552_089296_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "089296"}, "frames": ["2020-0213-143552_089296_movie_t-3.jpg", "2020-0213-143552_089296_movie_t-2.jpg", "2020-0213-143552_089296_movie_t-1.jpg", "2020-0213-143552_089296_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated expressway with three same-direction lanes and a concrete barrier with bollards on the right; the pavement is smooth and traffic is moderate and flowing. A white truck in the ego lane ahead drives away, setting the pace for the ego vehicle. Farther ahead in the same lane, a large box truck continues steadily, keeping a modest gap to the white truck. In the left lane, another white truck travels roughly alongside and does not attempt to merge. Several trucks are stopped along the far left shoulder near roadside buildings, outside the travel lanes.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The truck ahead may slow or brake unexpectedly, so the driver should monitor its movements and be prepared to respond."}
{"id": "train_06247", "split": "train", "clip_key": "titan_clip_283_000414_movie", "source": {"subset": "titan", "scenario": "clip_283", "frame": "000414"}, "frames": ["titan_clip_283_000414_movie_t-3.jpg", "titan_clip_283_000414_movie_t-2.jpg", "titan_clip_283_000414_movie_t-1.jpg", "titan_clip_283_000414_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban neighborhood street with mid-rise buildings meets a cross street at an unsignalized intersection; the narrow roadway has no median, the pavement is smooth, and traffic is light. A pedestrian in dark clothing crosses from right to left on the near crosswalk directly across the ego lane, occupying the path. A small black car is stopped ahead along the left side near the intersection, reducing available space but remaining in the same direction of travel. Several pedestrians on the sidewalks near the corners walk or stand by the curb without entering the roadway. A convex corner mirror and a pedestrian crossing sign are visible on the right, and bicycles and a motorcycle are parked along the right curb.", "hazard_reasoning": "No immediate hazards are present; the road ahead is clear, the traffic light is red, and pedestrians are at a safe distance, so no warning is necessary under these conditions."}
{"id": "train_06248", "split": "train", "clip_key": "titan_clip_1055_000336_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1055_000336_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1055_000336_movie_t-3_augB1.jpg", "titan_clip_1055_000336_movie_t-2_augB1.jpg", "titan_clip_1055_000336_movie_t-1_augB1.jpg", "titan_clip_1055_000336_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian pushing a cart.", "environment_perception": "A narrow urban two-way street with left-side driving and no median runs between shops; the pavement is smooth and traffic is light as the ego vehicle proceeds straight past vehicles stopped along the left curb. Ahead slightly left in the middle of the road, a pedestrian wearing black pants pushes a cart and crosses toward the left curb, encroaching on the ego lane and constraining the pace. Far ahead in the same direction, a small car continues straight in the lane, maintaining separation from the ego vehicle. No salient signals or speed signs are visible, and the parked vans on the left narrow the lane near the ego.", "hazard_reasoning": "There is a pedestrian wearing black pants, pushing a cart, and crossing the street, in the middle of the road, to the left side. The driver should yield because the pedestrian is obstructing the lane and poses a collision hazard if not given right of way."}
{"id": "train_06249", "split": "train", "clip_key": "titan_clip_71_000510_movie", "source": {"subset": "titan", "scenario": "clip_71", "frame": "000510"}, "frames": ["titan_clip_71_000510_movie_t-3.jpg", "titan_clip_71_000510_movie_t-2.jpg", "titan_clip_71_000510_movie_t-1.jpg", "titan_clip_71_000510_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to crossing pedestrian", "environment_perception": "An urban multi-lane two-way street with no median and smooth pavement shows light traffic as the ego vehicle approaches a small side-street intersection. A pedestrian in a blue T-shirt and white cap is ahead to the right, crossing rightward on the marked crosswalk directly in front of the ego vehicle, occupying the path and constraining progress. A white truck stands on the left at the side street by the curb, stationary and not moving into the main road. A black van is parked along the right curb ahead, and cones mark a small work area in the side street without encroaching onto the main lanes.", "hazard_reasoning": "There is a pedestrian wearing a blue T-shirt and a white cap, crossing the street at the pedestrian crossing, to the right side. The driver should yield because the pedestrian is entering the crosswalk and has priority, reducing the risk of collision."}
{"id": "train_06250", "split": "train", "clip_key": "2020-0131-103016_065333_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "065333"}, "frames": ["2020-0131-103016_065333_movie_t-3.jpg", "2020-0131-103016_065333_movie_t-2.jpg", "2020-0131-103016_065333_movie_t-1.jpg", "2020-0131-103016_065333_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop for pedestrian crossing.", "environment_perception": "An urban multi-lane intersection with no median and dry pavement is ahead, and traffic is moderate as the ego car waits at a red light. A stream of pedestrians, including a person in a black coat, crosses the zebra crossing ahead from right to left across the ego lane, using the signal and occupying the path. Vehicles on the cross street move through the junction from left to right while the ego is stopped. Oncoming cars queue on the far side of the intersection, remaining stationary behind their line.", "hazard_reasoning": "There is a pedestrian wearing a black coat, crossing the street at a pedestrian crossing, from the right side to the left side, because of the red traffic light. The pedestrian is entering the vehicle's path, so the driver must stop to avoid a collision."}
{"id": "train_06251", "split": "train", "clip_key": "2020-0204-103442_094481_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "094481"}, "frames": ["2020-0204-103442_094481_movie_t-3.jpg", "2020-0204-103442_094481_movie_t-2.jpg", "2020-0204-103442_094481_movie_t-1.jpg", "2020-0204-103442_094481_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with two same-direction lanes and a raised median on the right has smooth pavement and light-to-moderate flow that bunches at a signal. Ahead in the ego lane, a white van is stopped for the red traffic light and holds the ego vehicle. In the adjacent left lane ahead, a yellow hatchback and other cars slow to a stop in the same queue, limiting options to pass. On the sidewalk to the left, a cyclist rides forward alongside the traffic without entering the road. The overhead signal facing the ego direction shows red.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The van's halt indicates the ego-vehicle must stop to prevent a collision at the traffic signal."}
{"id": "train_06252", "split": "train", "clip_key": "2020-0129-144857_087519_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "087519"}, "frames": ["2020-0129-144857_087519_movie_t-3.jpg", "2020-0129-144857_087519_movie_t-2.jpg", "2020-0129-144857_087519_movie_t-1.jpg", "2020-0129-144857_087519_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban two-way road with one lane in each direction, a solid yellow centerline, and a right-side guardrail appears dry and smooth, with moderate traffic and brief slowing ahead. A white van directly ahead in the ego lane slows because a short queue forms farther up, constraining the ego car's pace. A small white car ahead-left in the same direction travels in a left-side bay and maintains distance behind the van. Oncoming cars to the right pass steadily in their lane and remain clear of the centerline. A pedestrian footbridge spans the roadway, and flexible bollards taper the left-side bay.", "hazard_reasoning": "There is a white van slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adjust to the congested traffic."}
{"id": "train_06253", "split": "train", "clip_key": "2020-0218-103119_006659_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "006659"}, "frames": ["2020-0218-103119_006659_movie_t-3.jpg", "2020-0218-103119_006659_movie_t-2.jpg", "2020-0218-103119_006659_movie_t-1.jpg", "2020-0218-103119_006659_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of stopped truck blocking sidewalk", "environment_perception": "An urban residential street with a narrow two-way carriageway and no median extends ahead; the pavement looks smooth and traffic is light. A dark sedan ahead in the left-side ego lane proceeds slowly, constraining the pace. On the right at a small intersection, a white truck is stopped because it is waiting for the road to be clear, positioned near the edge where it may merge into the ego lane. The oncoming lane appears empty in view, and buildings with parked bicycles line both sides, tightening space without blocking the roadway.", "hazard_reasoning": "There is a white truck stopped on the right side of the intersection because it is waiting for the road to be clear. The stopped truck may block visibility and limit pedestrian movement, so the driver should be aware of this obstruction."}
{"id": "train_06254", "split": "train", "clip_key": "2020-0129-105040_066891_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "066891"}, "frames": ["2020-0129-105040_066891_movie_t-3.jpg", "2020-0129-105040_066891_movie_t-2.jpg", "2020-0129-105040_066891_movie_t-1.jpg", "2020-0129-105040_066891_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid centerline runs between close-set buildings; pavement looks smooth and traffic is light. The ego vehicle proceeds in the left lane. A silver van ahead in the ego lane slows because a larger box truck farther ahead in the same lane also slows, and together they set the ego car's pace. On the right sidewalk, a pedestrian walks parallel to the road near a crosswalk while staying behind the white railing. Another person stands by a shopfront on the right side, not entering the roadway. An overhead school-zone warning sign and a zebra crossing are visible.", "hazard_reasoning": "There is a silver van slowing in front of the ego car in the ego lane because of truck slowing ahead. The van's reduced speed could require sudden braking by the driver, so the driver should slow down to maintain a safe following distance."}
{"id": "train_06255", "split": "train", "clip_key": "2020-0205-152530_009990_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "009990"}, "frames": ["2020-0205-152530_009990_movie_t-3.jpg", "2020-0205-152530_009990_movie_t-2.jpg", "2020-0205-152530_009990_movie_t-1.jpg", "2020-0205-152530_009990_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes runs between buildings and a riverside barrier; the pavement looks smooth and traffic is heavy, largely stopped under strong low sun glare. Directly ahead in the ego lane, a green taxi is stationary because congestion blocks the way, holding the ego vehicle. In the adjacent right lane a dark van waits in the queue, also stopped and constraining any rightward merge. To the left of the ego car, a silver sedan creeps forward alongside in the next lane, remaining close and parallel to the ego vehicle.", "hazard_reasoning": "There is a green taxi stopped in front of the ego car because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle and maintain a safe following distance."}
{"id": "train_06256", "split": "train", "clip_key": "2020-0221-115122_009956_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "009956"}, "frames": ["2020-0221-115122_009956_movie_t-3.jpg", "2020-0221-115122_009956_movie_t-2.jpg", "2020-0221-115122_009956_movie_t-1.jpg", "2020-0221-115122_009956_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to maintain safe distance from the van ahead.", "environment_perception": "An urban multi-lane road runs under elevated expressway ramps, with three same-direction lanes and a right-side guardrail; the pavement is clean and traffic is heavy and largely stopped. Directly ahead in the ego lane a silver van is stopped because of traffic congestion, holding the ego vehicle in place. Slightly ahead in the right lane a small white van queues beside the ego car and remains stationary, preventing an easy pass on the right. To the front-left, a gray hatchback in the adjacent lane inches forward and drifts toward the right lane line, which may bring it into the ego lane.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary van and maintain a safe following distance."}
{"id": "train_06257", "split": "train", "clip_key": "titan_clip_484_000156_movie", "source": {"subset": "titan", "scenario": "clip_484", "frame": "000156"}, "frames": ["titan_clip_484_000156_movie_t-3.jpg", "titan_clip_484_000156_movie_t-2.jpg", "titan_clip_484_000156_movie_t-1.jpg", "titan_clip_484_000156_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single lane each direction runs between storefronts; pavement is smooth and traffic is light. Parked vehicles along both curbs narrow the usable lane. Ahead on the right side, a cyclist in a blue shirt rides toward the ego vehicle near the center line, reducing passing space. On the right edge by the curb, a man walks toward the camera along the roadway, close to the travel lane and potentially edging into it. At the left curb just ahead, a scooter with a rider waits beside a dark car as if preparing to merge into the ego lane, which may constrain the ego vehicle's pace.", "hazard_reasoning": "There is a cyclist wearing a blue shirt, cycling on the right side of the road, toward the ego car. The cyclist is approaching the vehicle's path, so the driver should slow down to maintain safe separation."}
{"id": "train_06258", "split": "train", "clip_key": "titan_clip_892_000330_movie", "source": {"subset": "titan", "scenario": "clip_892", "frame": "000330"}, "frames": ["titan_clip_892_000330_movie_t-3.jpg", "titan_clip_892_000330_movie_t-2.jpg", "titan_clip_892_000330_movie_t-1.jpg", "titan_clip_892_000330_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of construction worker", "environment_perception": "A narrow urban two-way street with one lane each direction and no median stretches ahead; the pavement is smooth and traffic is light, with the ego vehicle proceeding in the left lane while oncoming traffic uses the right. A cyclist emerges from the left curb near a convenience store, moves diagonally across, and then continues ahead in the ego lane, briefly constraining the pace. A white taxi noses out from a left side street and waits to merge, potentially entering the ego path. Farther ahead on the left shoulder, a person in a safety vest stands beside construction barriers for ongoing work, narrowing the usable lane.", "hazard_reasoning": "There is a person wearing a safety vest and standing on the left side of the road, because of construction work on the left. The driver should be cautious because the worker may step into the lane unexpectedly."}
{"id": "train_06259", "split": "train", "clip_key": "2020-0220-151845_046922_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "046922"}, "frames": ["2020-0220-151845_046922_movie_t-3.jpg", "2020-0220-151845_046922_movie_t-2.jpg", "2020-0220-151845_046922_movie_t-1.jpg", "2020-0220-151845_046922_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs under an elevated expressway, with guardrails and dry, intact pavement; traffic is moderate and generally steady. A red truck covered by a yellow tarp is directly ahead in the ego lane and speeds up, opening a small gap in front of the ego car. A large yellow coach bus travels in the adjacent lane to the left at a slower pace, keeping close to the ego vehicle and constraining a lane change. A motorcyclist rides along the right side past the ego car and continues forward between lanes, possibly entering the ego lane ahead. Overhead green signs point to Route 408 toward Eifuku and E20 Chuo Expressway.", "hazard_reasoning": "There is a red truck speeding up in the ego lane, in front of the ego car. The driver should start moving to maintain a safe following distance as the truck accelerates ahead."}
{"id": "train_06260", "split": "train", "clip_key": "titan_clip_140_000246_movie", "source": {"subset": "titan", "scenario": "clip_140", "frame": "000246"}, "frames": ["titan_clip_140_000246_movie_t-3.jpg", "titan_clip_140_000246_movie_t-2.jpg", "titan_clip_140_000246_movie_t-1.jpg", "titan_clip_140_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban commercial street with one lane in each direction, no median, smooth pavement, and light traffic. Ahead at a zebra crosswalk, a pedestrian carrying an umbrella, wearing a white shirt and brown pants, crosses from the left to the right across the ego lane, briefly constraining the pace. A white van further ahead in the same lane slows near the crosswalk, forming a short queue. Additional pedestrians cluster at both curbs, including people on the right sidewalk edging toward the crosswalk, close to the roadway. Buildings and trees line the street, and there is no notable oncoming traffic.", "hazard_reasoning": "There is a pedestrian carrying an umbrella, wearing a white shirt and brown pants, and crossing the street in a crosswalk, from the left side to the right side. The driver should stop to yield to the crossing pedestrian and avoid potential collision."}
{"id": "train_06261", "split": "train", "clip_key": "titan_clip_1189_000486_movie", "source": {"subset": "titan", "scenario": "clip_1189", "frame": "000486"}, "frames": ["titan_clip_1189_000486_movie_t-3.jpg", "titan_clip_1189_000486_movie_t-2.jpg", "titan_clip_1189_000486_movie_t-1.jpg", "titan_clip_1189_000486_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist.", "environment_perception": "An urban narrow two-way street lined with shops and a hotel, with no median and smooth pavement, carries light traffic as the road bends slightly right. A silver van ahead in the same direction moves slowly near the center, constraining the ego car's pace. A cyclist wearing a black sleeveless shirt and black shorts with a backpack rides toward the ego car along the left side, passing beside the van and approaching the ego lane. A pedestrian on the left sidewalk walks along the storefronts and stays on the curb.", "hazard_reasoning": "A cyclist wearing a black sleeveless shirt and black shorts, carrying a backpack, and cycling on the left side of the road, toward the ego car. The driver should yield because the cyclist's path may intersect with the vehicle's lane, posing a collision risk."}
{"id": "train_06262", "split": "train", "clip_key": "2020-0204-103442_041107_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "041107"}, "frames": ["2020-0204-103442_041107_movie_t-3.jpg", "2020-0204-103442_041107_movie_t-2.jpg", "2020-0204-103442_041107_movie_t-1.jpg", "2020-0204-103442_041107_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, the asphalt in good condition, with heavy traffic largely at a standstill. Immediately ahead in the ego lane, a white express bus is stopped because of traffic congestion ahead, holding the ego vehicle in place. In the left adjacent lane, a box truck is also stopped level with the bus, leaving little room to shift left. In the right lane, a silver minivan queues beside the bus and creeps slightly among other cars, keeping the flow blocked across the carriageway.", "hazard_reasoning": "There is a white bus stopped in the ego lane because of traffic congestion ahead. The bus's halted position signals a queue ahead, so you must stop to avoid colliding with the stationary vehicle."}
{"id": "train_06263", "split": "train", "clip_key": "titan_clip_603_000180_movie", "source": {"subset": "titan", "scenario": "clip_603", "frame": "000180"}, "frames": ["titan_clip_603_000180_movie_t-3.jpg", "titan_clip_603_000180_movie_t-2.jpg", "titan_clip_603_000180_movie_t-1.jpg", "titan_clip_603_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban back street with buildings tight to the curb has a very narrow two-way roadway without a centerline and smooth pavement; no vehicles are present, so traffic is light. A pedestrian in a black T-shirt walks toward the ego vehicle along the right edge of the road because the sidewalk is obstructed by cones and rope, and he may enter the vehicle's path. Another pedestrian ahead on the left walks away beside parked bicycles, occasionally edging into the lane near the shopfronts. Farther ahead a person near the middle of the street continues forward toward the distant intersection, occupying the travel space and likely constraining the ego car's pace. The right side forms a short work zone closing the walkway, and numerous bicycles are parked along the left curb.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, walking on the right side of the road, towards the ego car, because of the obstructed sidewalk. The pedestrian is walking towards the ego vehicle on the roadway, so the driver should slow down to avoid a potential collision."}
{"id": "train_06264", "split": "train", "clip_key": "2020-0210-101957_065195_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "065195"}, "frames": ["2020-0210-101957_065195_movie_t-3.jpg", "2020-0210-101957_065195_movie_t-2.jpg", "2020-0210-101957_065195_movie_t-1.jpg", "2020-0210-101957_065195_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban boulevard with two lanes in the ego direction is divided from oncoming lanes by a low hedge median and lined with trees; the asphalt looks smooth and traffic is light. A white van ahead in the ego left lane accelerates away under a green signal, briefly setting the ego car's pace. A white sedan farther ahead in the right lane travels slightly faster in its lane without affecting the ego path. A few pedestrians walk along the right sidewalk, moving parallel to traffic. A small vehicle is stopped at the left curb near the foreground but remains clear of the lane.", "hazard_reasoning": "There is a white van accelerating in front of the ego car in the left lane, because the traffic light is green. Following the vehicle ahead helps maintain a safe distance and adjust speed smoothly as traffic starts moving."}
{"id": "train_06265", "split": "train", "clip_key": "2020-0131-135401_045003_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "045003"}, "frames": ["2020-0131-135401_045003_movie_t-3.jpg", "2020-0131-135401_045003_movie_t-2.jpg", "2020-0131-135401_045003_movie_t-1.jpg", "2020-0131-135401_045003_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light", "environment_perception": "An urban two-way street with a single narrow lane per direction runs between close buildings, edged by guardrails; the pavement is smooth and traffic is light with no nearby oncoming cars. A white minivan directly ahead in the ego lane is stopped at the stop line because the signal over the intersection shows red, holding the ego vehicle. A couple of pedestrians wait on the right sidewalk near the crosswalk and do not enter the road. The oncoming lane beyond the junction is mostly clear with only distant movement. Overhead signals and a side repeater display red, and no obstacles or work zones are visible.", "hazard_reasoning": "There is a white minivan stopped in the ego lane because of a red traffic light. The driver should stop to avoid rear-ending the minivan and obey the traffic signal."}
{"id": "train_06266", "split": "train", "clip_key": "2020-0226-140503_003160_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "003160"}, "frames": ["2020-0226-140503_003160_movie_t-3.jpg", "2020-0226-140503_003160_movie_t-2.jpg", "2020-0226-140503_003160_movie_t-1.jpg", "2020-0226-140503_003160_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way street with no physical median and clean pavement carries heavy, slow traffic as the ego vehicle proceeds in the left lane. A red hatchback is stopped directly ahead in the ego lane because of congestion, blocking the path. Farther ahead in the same direction, a large box truck waits in the queue and further constrains progress. To the right, oncoming cars including a red taxi move steadily in their lanes without encroaching.", "hazard_reasoning": "There is a red hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle under these conditions."}
{"id": "train_06267", "split": "train", "clip_key": "titan_clip_424_000162_movie", "source": {"subset": "titan", "scenario": "clip_424", "frame": "000162"}, "frames": ["titan_clip_424_000162_movie_t-3.jpg", "titan_clip_424_000162_movie_t-2.jpg", "titan_clip_424_000162_movie_t-1.jpg", "titan_clip_424_000162_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way neighborhood street with smooth asphalt and no center line runs between buildings, with light traffic and no median. The ego-vehicle proceeds in the left lane. A pedestrian in a black dress carrying an umbrella crosses from the left ahead where no crosswalk is marked, passing in front of the ego car in the ego lane. A small white kei truck farther ahead in the same direction continues along the street at low speed but remains well ahead. On the right edge near the curb, a scooter with a rider stands stopped, angled toward the roadway and forming a roadside obstruction. Construction sheeting and barriers line the left side, narrowing sight lines.", "hazard_reasoning": "There is a pedestrian wearing a black dress, carrying an umbrella, and crossing the street from the left side, because there is no pedestrian crossing, in front of the ego car. The driver should slow down because the pedestrian is crossing without a designated crosswalk and may enter the vehicle's path unexpectedly."}
{"id": "train_06268", "split": "train", "clip_key": "2020-0131-103016_042391_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "042391"}, "frames": ["2020-0131-103016_042391_movie_t-3.jpg", "2020-0131-103016_042391_movie_t-2.jpg", "2020-0131-103016_042391_movie_t-1.jpg", "2020-0131-103016_042391_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane intersection with broad zebra crosswalks and well-kept pavement, no median, and light cross traffic as the ego car approaches in the left-side lane. Three pedestrians ahead occupy the near crosswalk, walking from left to right across the ego lane and temporarily blocking forward movement. A white van is in the middle of the intersection moving from right to left across the ego path, continuing through the cross street. Farther ahead, a long flatbed truck proceeds left to right across the junction, pacing the cross flow and affecting the gap the ego could use. Several delivery trucks wait at the right curb beyond the corner, with another van stopped along the far left curb.", "hazard_reasoning": "There is a white van crossing the intersection from right to left, in the middle of the intersection. The van could enter the ego-vehicle's path unexpectedly, so the driver must stop to avoid a collision."}
{"id": "train_06269", "split": "train", "clip_key": "2020-0228-102841_000910_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "000910"}, "frames": ["2020-0228-102841_000910_movie_t-3.jpg", "2020-0228-102841_000910_movie_t-2.jpg", "2020-0228-102841_000910_movie_t-1.jpg", "2020-0228-102841_000910_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian in roadway", "environment_perception": "An urban side street is shown, with a very narrow two-way road lacking a centerline; the asphalt looks smooth and traffic is light. Buildings and shutters sit close to the curb, tightening sight lines as the road bends gently right. Ahead in the middle of the roadway, a pedestrian wearing brown pants walks away from the ego car, occupying the ego path and effectively controlling the vehicle's pace. No other moving vehicles are visible nearby in either direction, and there are no salient traffic signals or posted speeds in view. A utility pole and storefronts line the left edge, and no parked vehicles or debris extend into the lane.", "hazard_reasoning": "There's a pedestrian wearing brown pants walking in the middle of the road, away from the ego car. The pedestrian's position in the roadway is unpredictable and poses a collision risk, so the driver should be cautious to avoid an accident."}
{"id": "train_06270", "split": "train", "clip_key": "titan_clip_722_000534_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_722_000534_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_722_000534_movie_t-3_augB1.jpg", "titan_clip_722_000534_movie_t-2_augB1.jpg", "titan_clip_722_000534_movie_t-1_augB1.jpg", "titan_clip_722_000534_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban narrow street with a single travel lane and no median runs between buildings; the pavement is worn but clear and traffic is light. A pedestrian in a black shirt crosses from the right toward the left directly ahead, moving toward the ego vehicle's path and forcing it to slow. Farther ahead near the left curb, an orange mini van stands or creeps slowly, narrowing the lane but not immediately blocking the way. Another pedestrian is visible farther up on the left side walking away and not interacting with the lane. A 30 speed limit sign is posted ahead above the roadway. Numerous parked bicycles line the left curb, reducing shoulder space.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and walking on the left side of the road, toward the ego car. The pedestrian may step into the lane unexpectedly, so the driver should stop to avoid a collision."}
{"id": "train_06271", "split": "train", "clip_key": "titan_clip_644_000036_movie", "source": {"subset": "titan", "scenario": "clip_644", "frame": "000036"}, "frames": ["titan_clip_644_000036_movie_t-3.jpg", "titan_clip_644_000036_movie_t-2.jpg", "titan_clip_644_000036_movie_t-1.jpg", "titan_clip_644_000036_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian.", "environment_perception": "A narrow urban street without a centerline runs between shops, the pavement looks smooth and there is light vehicular flow but many pedestrians. On the right edge close to the camera, a pedestrian in a white shirt walks toward the ego-vehicle along the roadway, keeping to the curb because other pedestrians crowd the side and potentially edging into the ego path. Ahead in the center of the lane, a small group of pedestrians walks away toward the distance, occupying the travel path and setting a slow pace. On the left near a storefront, another person with an umbrella waits by the curb, near enough to step into the lane. Parked bicycles and signs along the right storefront narrow the margin.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking on the right side of the road, towards the ego-car, because of other pedestrians. This pedestrian is approaching the vehicle's path and may enter the roadway unexpectedly, requiring careful manoeuvre."}
{"id": "train_06272", "split": "train", "clip_key": "2020-0131-135401_062232_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "062232"}, "frames": ["2020-0131-135401_062232_movie_t-3.jpg", "2020-0131-135401_062232_movie_t-2.jpg", "2020-0131-135401_062232_movie_t-1.jpg", "2020-0131-135401_062232_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with two lanes in each direction runs between mid-rise buildings, divided by a painted median; the dry pavement is smooth and traffic is moderate, bunching ahead. A white van directly ahead in the ego lane slows due to congestion and constrains the ego vehicle's pace. To the right, a dark minivan in the adjacent same-direction lane moves slightly faster alongside, reducing gaps to merge. Farther right, oncoming cars travel steadily in their lanes beyond the median and remain separated from the ego path. No obstacles or work zones are visible.", "hazard_reasoning": "There is a white van slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to adjust speed and maintain a safe following distance under these conditions."}
{"id": "train_06273", "split": "train", "clip_key": "2020-0214-102601_046503_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "046503"}, "frames": ["2020-0214-102601_046503_movie_t-3.jpg", "2020-0214-102601_046503_movie_t-2.jpg", "2020-0214-102601_046503_movie_t-1.jpg", "2020-0214-102601_046503_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with a guardrail median separating opposite traffic and smooth pavement; traffic is light to moderate and flows freely. A white van ahead in the ego lane maintains speed and continues straight as the road ahead is clear. A small flatbed truck further ahead in the same lane cruises at a similar pace, modestly constraining the ego vehicle's headway. To the left, another van draws alongside then eases ahead in the adjacent lane without encroaching on the ego path. On the opposite carriageway to the right beyond the barrier, oncoming cars move steadily past. Overhead blue direction signs are visible, including a panel indicating 300 m to the next turn.", "hazard_reasoning": "There is a white van driving in the ego lane, in front of the ego car, because the road ahead is clear. The van may brake unexpectedly, so follow the vehicle ahead to maintain a safe distance."}
{"id": "train_06274", "split": "train", "clip_key": "2020-0225-102455_021451_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "021451"}, "frames": ["2020-0225-102455_021451_movie_t-3.jpg", "2020-0225-102455_021451_movie_t-2.jpg", "2020-0225-102455_021451_movie_t-1.jpg", "2020-0225-102455_021451_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian waiting to cross", "environment_perception": "An urban two-way street with one lane per direction and no median curves gently right toward a marked crosswalk at a signalized intersection; the pavement is dry, and traffic is moderate with steady oncoming flow on the right. A silver sedan directly ahead in the ego lane slows near the crosswalk behind a small delivery truck, setting the pace for the ego vehicle. At the left curb by the crosswalk, a pedestrian wearing a blue jacket, black pants, and a backpack waits to cross and could step into the ego lane. On the right edge near the storefronts, a cyclist rolls toward the intersection parallel to the ego lane, potentially merging or crossing at the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a blue jacket, black pants, and carrying a backpack, waiting to cross at the left side of the road. The pedestrian may step into the roadway unexpectedly, so the driver should be aware of their presence and potential crossing."}
{"id": "train_06275", "split": "train", "clip_key": "2020-0225-102455_078071_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "078071"}, "frames": ["2020-0225-102455_078071_movie_t-3.jpg", "2020-0225-102455_078071_movie_t-2.jpg", "2020-0225-102455_078071_movie_t-1.jpg", "2020-0225-102455_078071_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial approaches a wide signalized intersection with flexible bollards and chevron islands; the dry pavement looks good and traffic is light to moderate, briefly queuing at the junction. A white van directly ahead in the ego lane is stopped at the stop line because the signal is red, holding the ego car. A dark sedan in the adjacent right lane eases forward and comes to a stop beside the ego vehicle, remaining in its lane. Overhead direction boards span the road, and the traffic light facing the ego approach shows red.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The stopped van signals a red signal ahead and the driver should stop to avoid a rear-end collision."}
{"id": "train_06276", "split": "train", "clip_key": "2020-0207-101955_067596_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "067596"}, "frames": ["2020-0207-101955_067596_movie_t-3.jpg", "2020-0207-101955_067596_movie_t-2.jpg", "2020-0207-101955_067596_movie_t-1.jpg", "2020-0207-101955_067596_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately and maintain safe distance", "environment_perception": "An urban divided roadway with dry, well-kept pavement runs straight, separated from oncoming lanes by a metal railing median, and same-direction traffic is slow and intermittently stopped. Directly ahead, a white hatchback in the ego lane stands still because of congestion ahead, blocking the ego car's path. Slightly farther ahead to the left, a silver box truck in the adjacent lane is also halted in the queue, constraining overall movement. Farther up the road, additional vehicles line up in the same direction, maintaining the bottleneck. No salient signals or pedestrians are visible, and the road edges are clear.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead on the road. The driver should stop to avoid collision with the halted vehicle."}
{"id": "train_06277", "split": "train", "clip_key": "2020-0206-142535_022852_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "022852"}, "frames": ["2020-0206-142535_022852_movie_t-3.jpg", "2020-0206-142535_022852_movie_t-2.jpg", "2020-0206-142535_022852_movie_t-1.jpg", "2020-0206-142535_022852_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes and a planted median is well paved, and traffic is heavy and stationary at a signalized intersection. A silver hatchback directly ahead in the ego lane is stopped for the red light, holding the ego vehicle in place. Farther ahead in the same lane a tall white box truck is also stopped, obscuring the view of the junction. To the left, a white SUV in the adjacent lane creeps forward alongside while waiting, limiting room to merge. The overhead signal shows red for our approach while cross-street vehicles proceed through the intersection, and a low guardrail with shrubs lines the median at the right edge.", "hazard_reasoning": "There is a silver SUV stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to avoid colliding with the halted vehicle at the intersection due to the red signal."}
{"id": "train_06278", "split": "train", "clip_key": "titan_clip_391_000756_movie", "source": {"subset": "titan", "scenario": "clip_391", "frame": "000756"}, "frames": ["titan_clip_391_000756_movie_t-3.jpg", "titan_clip_391_000756_movie_t-2.jpg", "titan_clip_391_000756_movie_t-1.jpg", "titan_clip_391_000756_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian crossing.", "environment_perception": "A dense urban shopping street with a single narrow shared lane and stone-paved surface shows light traffic and low speeds, with no marked divider and tight clearance by storefronts. Ahead in the middle of the road, a pedestrian wearing a white T-shirt and pants crosses from right to left, directly in the ego vehicle's path. A small van in the same lane a short distance ahead is stopped with its rear open, narrowing the lane and constraining the pace. Farther ahead, a white truck proceeds away in the same direction along the street. A no-entry sign is posted at a side alley on the left.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and pants crossing the street, in the middle of the road, from the right side to the left. The driver should be aware of the pedestrian crossing to avoid a collision."}
{"id": "train_06279", "split": "train", "clip_key": "2020-0213-143552_079022_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "079022"}, "frames": ["2020-0213-143552_079022_movie_t-3.jpg", "2020-0213-143552_079022_movie_t-2.jpg", "2020-0213-143552_079022_movie_t-1.jpg", "2020-0213-143552_079022_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban divided road with two same-direction lanes curves to the right, bordered by a tall noise barrier on the left and a guardrail on the right; the pavement looks dry and smooth, and traffic is light. A dark heavy truck travels ahead in the left lane at a steady pace through the bend, constraining the ego vehicle's speed. No salient signals or speed-limit signs are visible, and no other vehicles or pedestrians encroach on the ego lane.", "hazard_reasoning": "No caption provided. The scene presents no hazards, so the driver can continue driving normally."}
{"id": "train_06280", "split": "train", "clip_key": "2020-0205-152530_060433_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "060433"}, "frames": ["2020-0205-152530_060433_movie_t-3.jpg", "2020-0205-152530_060433_movie_t-2.jpg", "2020-0205-152530_060433_movie_t-1.jpg", "2020-0205-152530_060433_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of merging truck", "environment_perception": "The scene is an urban frontage road beneath an elevated expressway, where the ego car follows a single left-side lane parallel to a faster multi-lane roadway on the right, separated by a chevron gore and flexible posts; the pavement is dry and traffic light to moderate. A blue truck ahead in the ego lane begins changing to the right lane to join the main flow, briefly constraining the ego car's pace as it crosses through an opening. In the right lanes, a white van slightly ahead continues straight at a steady speed, shaping the available gap for the truck's merge.", "hazard_reasoning": "A blue truck in front of the ego car is changing to the right lane. The truck may merge into your lane unexpectedly, so be aware of its movement and adjust your position accordingly."}
{"id": "train_06281", "split": "train", "clip_key": "2020-0206-142535_046733_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "046733"}, "frames": ["2020-0206-142535_046733_movie_t-3.jpg", "2020-0206-142535_046733_movie_t-2.jpg", "2020-0206-142535_046733_movie_t-1.jpg", "2020-0206-142535_046733_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs between tall buildings with smooth pavement and moderate same-direction traffic separated by double white lines. The ego vehicle follows a gray sedan in the left lane, which slows as a white compact car from the adjacent right lane cuts in ahead of it, briefly constraining the ego vehicle's pace. Several taxis are queued along the left curb at a pickup area and remain stationary outside the travel lane. Farther ahead, a white box truck proceeds steadily in the same direction.", "hazard_reasoning": "There is a gray sedan that is slowing down in the ego lane, because a vehicle is cutting in in front of it. The driver should slow down to maintain a safe distance and avoid collision with the merging vehicle."}
{"id": "train_06282", "split": "train", "clip_key": "2020-0204-150838_006142_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "006142"}, "frames": ["2020-0204-150838_006142_movie_t-3.jpg", "2020-0204-150838_006142_movie_t-2.jpg", "2020-0204-150838_006142_movie_t-1.jpg", "2020-0204-150838_006142_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial passes offices and trees, with three same-direction lanes, a curb and railing on the left, dry smooth pavement, and light traffic. Ahead in the ego lane, a black sedan moves left into the curb lane from the ego lane, creating space in front of the ego vehicle. Farther ahead to the right, a white van continues straight at a steady pace and remains separated from the ego lane. Another car farther ahead in the center lane proceeds through a gentle right bend without changing lanes. No traffic signals are visible and no obstacles appear.", "hazard_reasoning": "There is a black sedan in front of the ego car, changing to the left lane from the ego lane. The sedan's merging maneuver reduces available space ahead and may require sudden braking, so the driver should slow down to maintain a safe following distance."}
{"id": "train_06283", "split": "train", "clip_key": "titan_clip_568_000060_movie", "source": {"subset": "titan", "scenario": "clip_568", "frame": "000060"}, "frames": ["titan_clip_568_000060_movie_t-3.jpg", "titan_clip_568_000060_movie_t-2.jpg", "titan_clip_568_000060_movie_t-1.jpg", "titan_clip_568_000060_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban, narrow single-lane shopping street with block-paved surface and no divider runs between storefronts, with no other vehicles and pedestrian activity governing a slow flow. Ahead in the center of the lane, two pedestrians walk toward the ego vehicle, occupying the path and constraining its pace. On the right edge near the curb, a pedestrian carrying a handbag walks toward the ego car and may step into the travel lane. Farther ahead in the distance, another person proceeds away along the lane, remaining in front of the vehicle's path. A parked bicycle with a front basket and several shop signboards line the edges, further narrowing the roadway.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking on the right side of the road, towards the ego car. The driver should slow down to avoid a potential collision if the pedestrian continues crossing into the vehicle's path."}
{"id": "train_06284", "split": "train", "clip_key": "2020-0203-114632_021234_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "021234"}, "frames": ["2020-0203-114632_021234_movie_t-3.jpg", "2020-0203-114632_021234_movie_t-2.jpg", "2020-0203-114632_021234_movie_t-1.jpg", "2020-0203-114632_021234_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban scene shows a wide, signalized intersection on a multi-lane two-way road without a median; the pavement is clean and traffic is moderate as vehicles bunch near the crosswalk. Ahead left, a cap-wearing cyclist rides along the red bicycle crossing toward the ego vehicle within the pedestrian crosswalk, moving into the ego path and constraining progress. To the right ahead, a black van in the adjacent same-direction lane edges forward near the crosswalk and partly screens the far side of the junction. On both sides, multiple pedestrians walk across or wait at the curbs, increasing crossing activity near the ego lane. Overhead traffic signals are present, and bold zebra markings and a red bike section highlight the crossing.", "hazard_reasoning": "There is a cyclist wearing a cap, crossing the street at the pedestrian crosswalk, moving toward the ego car, at the left side of the intersection. The driver should stop immediately to yield to the cyclist crossing ahead and avoid a potential collision."}
{"id": "train_06285", "split": "train", "clip_key": "titan_clip_915_000498_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_915_000498_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_915_000498_movie_t-3_augB1.jpg", "titan_clip_915_000498_movie_t-2_augB1.jpg", "titan_clip_915_000498_movie_t-1_augB1.jpg", "titan_clip_915_000498_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "A busy urban commercial street with a single narrow one-way lane and no divider; the pavement is smooth, vehicular traffic is light, and pedestrian flow is heavy. Ahead in the middle of the lane, a short pedestrian in a blue dress crosses from right to left across the ego vehicle's path. Farther ahead, several pedestrians walk along the lane in the same direction near the centerline, moving slowly and occupying the travel way, which limits available space. On the left edge just beyond them, a small red delivery scooter is stopped near the curb, partially in the lane but static. In the distance more foot traffic fills the approach around shopfronts, and there are no visible signals or posted speeds.", "hazard_reasoning": "There is a short pedestrian wearing a blue dress, in the middle of the road, crossing the street from the right side to the left side. The driver should yield because the pedestrian is entering the vehicle's path at a designated crossing and has the right of way."}
{"id": "train_06286", "split": "train", "clip_key": "2020-0226-140503_012290_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "012290"}, "frames": ["2020-0226-140503_012290_movie_t-3.jpg", "2020-0226-140503_012290_movie_t-2.jpg", "2020-0226-140503_012290_movie_t-1.jpg", "2020-0226-140503_012290_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with two narrow lanes and no median runs between mid-rise buildings, the ego car proceeding in the left lane on smooth red pavement; traffic is light as it approaches a signalized intersection. Ahead in the ego lane, a green van drives away from the ego car at a steady speed and effectively sets the pace. A few pedestrians stand on the sidewalks near the corners. The oncoming lane to the right appears clear.", "hazard_reasoning": "There is a green van driving in the ego lane away from the ego car. The van directly ahead could slow or brake unexpectedly, so the driver should stay alert and prepare to react promptly to changes in its speed."}
{"id": "train_06287", "split": "train", "clip_key": "titan_clip_719_000264_movie", "source": {"subset": "titan", "scenario": "clip_719", "frame": "000264"}, "frames": ["titan_clip_719_000264_movie_t-3.jpg", "titan_clip_719_000264_movie_t-2.jpg", "titan_clip_719_000264_movie_t-1.jpg", "titan_clip_719_000264_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban back street with a single narrow two-way lane runs between low shops, with no center divider and smooth pavement; traffic is light and there are no moving vehicles nearby. Ahead in the lane, a pedestrian carrying an umbrella and a handbag crosses mid-block from the right to the left, entering the ego path and prompting a brief slowdown. Farther ahead along the left edge, another pedestrian walks away in the same direction close to the curb and may drift into the lane. Utility poles and storefront steps stand close to the roadway, reducing lateral clearance.", "hazard_reasoning": "A pedestrian carrying an umbrella and a handbag crosses the street in the middle of the road, from the right to the left side of the road in a narrow lane. You should stop to avoid a collision with the crossing pedestrian."}
{"id": "train_06288", "split": "train", "clip_key": "titan_clip_1045_000360_movie", "source": {"subset": "titan", "scenario": "clip_1045", "frame": "000360"}, "frames": ["titan_clip_1045_000360_movie_t-3.jpg", "titan_clip_1045_000360_movie_t-2.jpg", "titan_clip_1045_000360_movie_t-1.jpg", "titan_clip_1045_000360_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for pedestrian crossing", "environment_perception": "An urban residential street is shown, a narrow two-way road with no median, wet pavement, and very light traffic as the ego vehicle proceeds in the left lane toward a small intersection. On the left at the near side of the intersection, a pedestrian carrying an umbrella, wearing a black T-shirt and brown shorts, crosses away from the ego car toward the far side, briefly entering the roadway without affecting the lane. A yellow school-zone warning sign stands on a pole at the left corner, and close buildings and curbside bollards create a tight corridor with limited sight lines.", "hazard_reasoning": "There's a pedestrian carrying an umbrella, wearing a black t-shirt and brown shorts, and crossing the street, on the left side of the intersection, away from the ego car. The driver should slow down for the pedestrian crossing to ensure safe passage."}
{"id": "train_06289", "split": "train", "clip_key": "titan_clip_792_000372_movie", "source": {"subset": "titan", "scenario": "clip_792", "frame": "000372"}, "frames": ["titan_clip_792_000372_movie_t-3.jpg", "titan_clip_792_000372_movie_t-2.jpg", "titan_clip_792_000372_movie_t-1.jpg", "titan_clip_792_000372_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban neighborhood scene shows a narrow two-way road with no center divider, smooth pavement, and light traffic as the street bends slightly left ahead. Ahead on the right edge, a cyclist in a black and white shirt rides away from the ego vehicle within the roadway because the sidewalk is narrow, occupying space that may limit passing. Several bicycles stand parked along shopfronts on the right near the curb, further narrowing the corridor. No oncoming traffic or traffic signals are visible.", "hazard_reasoning": "There is a cyclist wearing a black and white shirt, cycling on the right side of the road, away from the ego car, because the sidewalk is narrow. The cyclist is directly ahead in your lane on a narrow street, so you should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_06290", "split": "train", "clip_key": "2020-0131-103016_074277_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "074277"}, "frames": ["2020-0131-103016_074277_movie_t-3.jpg", "2020-0131-103016_074277_movie_t-2.jpg", "2020-0131-103016_074277_movie_t-1.jpg", "2020-0131-103016_074277_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and smooth dry pavement carries heavy, slow traffic toward a junction amid tall buildings. A white van directly ahead in the ego lane slows and creeps because of congestion at the intersection, controlling the ego vehicle's pace. To the right, a small silver van and a blue-striped box truck run alongside at low speed, keeping that lane blocked for any merge. On the left, another van and a delivery truck queue in the adjacent lane and inch forward in parallel. An overhead blue guidance sign shows multiple straight-ahead arrows as the stacked vehicles extend toward the cross street.", "hazard_reasoning": "There is a white van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead at the intersection. The driver should reduce speed to maintain a safe following distance and anticipate sudden stops due to congestion."}
{"id": "train_06291", "split": "train", "clip_key": "2020-0131-103016_011632_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "011632"}, "frames": ["2020-0131-103016_011632_movie_t-3.jpg", "2020-0131-103016_011632_movie_t-2.jpg", "2020-0131-103016_011632_movie_t-1.jpg", "2020-0131-103016_011632_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction runs between mid-rise buildings, separated from oncoming lanes on the right by double white lines; the pavement is smooth and traffic is moderate. A black motorcycle ahead to the left changes right into the ego lane to pass a stationary vehicle in the left curb lane, briefly entering the ego path. Farther ahead, a white box truck continues straight in the ego lane and governs the pace. Oncoming cars to the right move steadily without interacting. Overhead round signs and large lane markings indicate a 40 speed limit.", "hazard_reasoning": "There is a black motorbike in front of the ego car, changing lanes from the left lane to the ego lane, because of a vehicle parked in the left lane. The motorbike's unexpected lane change could require you to slow down to avoid a collision."}
{"id": "train_06292", "split": "train", "clip_key": "2020-0207-101955_005921_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "005921"}, "frames": ["2020-0207-101955_005921_movie_t-3.jpg", "2020-0207-101955_005921_movie_t-2.jpg", "2020-0207-101955_005921_movie_t-1.jpg", "2020-0207-101955_005921_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection, with smooth dry pavement and moderate traffic; a rail-lined median on the right separates oncoming lanes. A dark box truck ahead in the ego lane continues straight toward the intersection and sets the pace. To its right, a small dark van proceeds in the adjacent same-direction lane at a similar speed. Ahead-left, a white minivan moves slowly toward the stop line just left of the ego lane. On the far side of the median, oncoming traffic flows independently. The intersection is controlled by overhead traffic lights, and a roadside speed-limit sign is posted on the left. A white van is stopped at the left curb near the ego lane, reducing lateral space.", "hazard_reasoning": "No hazards are visible in the scene, and all traffic signals and road conditions are normal, so the driver can proceed without additional caution."}
{"id": "train_06293", "split": "train", "clip_key": "titan_clip_765_000240_movie", "source": {"subset": "titan", "scenario": "clip_765", "frame": "000240"}, "frames": ["titan_clip_765_000240_movie_t-3.jpg", "titan_clip_765_000240_movie_t-2.jpg", "titan_clip_765_000240_movie_t-1.jpg", "titan_clip_765_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban one-lane street lined with shops has smooth pavement and very light traffic; a coned work zone with a lift appears ahead, narrowing the lane. On the right edge near the camera, a pedestrian wearing a white shirt and black pants and carrying a bag walks along the roadway because there is no sidewalk, close to the ego path and may enter it. Ahead in the lane slightly left of center, another pedestrian walks away toward the cones, occupying part of the path. Far ahead at the cones, a work vehicle stands within the lane, reducing usable width. Storefront signboards and bollards encroach at the curbs.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a bag, walking at the right side of the road, because there is no sidewalk. Because the pedestrian is close to the travel lane without a sidewalk, the driver should manoeuvre carefully around them to maintain safety."}
{"id": "train_06294", "split": "train", "clip_key": "titan_clip_233_000054_movie", "source": {"subset": "titan", "scenario": "clip_233", "frame": "000054"}, "frames": ["titan_clip_233_000054_movie_t-3.jpg", "titan_clip_233_000054_movie_t-2.jpg", "titan_clip_233_000054_movie_t-1.jpg", "titan_clip_233_000054_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a brick-paved surface runs between tall buildings, functioning as a single shared lane without a marked centerline; the pavement is intact and vehicular traffic is absent, so flow is very light. A pedestrian carrying an umbrella walks along the left side ahead, moving away from the ego vehicle and keeping to the edge. Several other pedestrians are farther ahead in the lane and along the right, walking in the same direction and effectively setting a slow pace. One person near the center ahead drifts toward the left storefronts and may enter the ego path. No traffic signals or posted speeds are visible. A small cart and an A-frame sign sit near the left curb, and posts with chains line the right, slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and walking on the left side of the road, away from the ego car. The pedestrian's proximity to the roadway may lead to an unexpected crossing, so the driver should slow down to ensure safety."}
{"id": "train_06295", "split": "train", "clip_key": "2020-0220-102630_123085_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "123085"}, "frames": ["2020-0220-102630_123085_movie_t-3.jpg", "2020-0220-102630_123085_movie_t-2.jpg", "2020-0220-102630_123085_movie_t-1.jpg", "2020-0220-102630_123085_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each way runs past low-rise buildings, marked by a yellow centerline and smooth pavement, with slow, steady traffic. A black hatchback directly ahead in the ego lane slows due to queuing traffic further ahead, constraining the ego vehicle's pace. An oncoming sedan travels in the opposite lane to the right and continues straight without affecting the ego path. A pedestrian moves along the right sidewalk near the stairs of a pedestrian overpass and remains off the roadway. A blue straight-ahead arrow sign is visible on the left beneath the overpass, whose stairways flank the road but do not obstruct travel.", "hazard_reasoning": "There is a black hatchback slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to match the reduced speed of traffic and maintain a safe following distance."}
{"id": "train_06296", "split": "train", "clip_key": "2020-0205-152530_012768_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "012768"}, "frames": ["2020-0205-152530_012768_movie_t-3.jpg", "2020-0205-152530_012768_movie_t-2.jpg", "2020-0205-152530_012768_movie_t-1.jpg", "2020-0205-152530_012768_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light", "environment_perception": "An urban multi-lane arterial with smooth dry pavement runs straight between buildings and a tree-lined sidewalk, with a guardrail along the left edge and strong sun glare ahead; traffic is heavy and largely queued throughout. A black hatchback directly ahead in the ego lane is stopped at a red traffic light, holding the ego vehicle. In the adjacent same-direction lane to the right, a white kei van just ahead creeps forward and passes the stopped line. Farther right, several vans and cars inch ahead in the same direction in a slow-moving queue. The overhead signal shows red for this approach, and no pedestrians or cyclists are visible.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane in front of the ego car, because of a red traffic light. You must stop because the hatchback is halted at a red light and failing to do so risks collision and running a red light."}
{"id": "train_06297", "split": "train", "clip_key": "2020-0213-143552_081884_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "081884"}, "frames": ["2020-0213-143552_081884_movie_t-3.jpg", "2020-0213-143552_081884_movie_t-2.jpg", "2020-0213-143552_081884_movie_t-1.jpg", "2020-0213-143552_081884_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway ramp with a single left-side lane runs under elevated structures, hemmed in by concrete barriers; the pavement is dry and traffic is light with no oncoming flow. A black heavy truck ahead in the ego lane drives away at a modest speed and effectively sets the ego vehicle's pace. No other moving vehicles are close. An overhead blue guide sign shows route directions and notes 700 m ahead. The lane remains narrow with barriers and a shallow ditch on the right, and no obstacles encroach on the roadway.", "hazard_reasoning": "There is a black truck driving in the ego lane away from the ego car. The driver should be cautious because the truck obstructs the view of the road ahead, increasing the risk of unseen obstacles or hazards."}
{"id": "train_06298", "split": "train", "clip_key": "titan_clip_414_000384_movie", "source": {"subset": "titan", "scenario": "clip_414", "frame": "000384"}, "frames": ["titan_clip_414_000384_movie_t-3.jpg", "titan_clip_414_000384_movie_t-2.jpg", "titan_clip_414_000384_movie_t-1.jpg", "titan_clip_414_000384_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around pedestrians carefully", "environment_perception": "An urban two-way street with one narrow lane per direction and no median runs between closely spaced buildings; the asphalt is intact and traffic appears light. Ahead along the left edge of the ego lane, three men wearing white shirts with backpacks walk away from the vehicle, encroaching on the lane and influencing the available space. On the right, a black SUV is stopped at the curb facing the ego, narrowing the oncoming side but not entering the ego lane. A few other vehicles are visible farther ahead down the street.", "hazard_reasoning": "There are three men wearing white shirts, carrying backpacks, and walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around these pedestrians to maintain a safe distance and avoid encroaching on their path."}
{"id": "train_06299", "split": "train", "clip_key": "titan_clip_62_000102_movie", "source": {"subset": "titan", "scenario": "clip_62", "frame": "000102"}, "frames": ["titan_clip_62_000102_movie_t-3.jpg", "titan_clip_62_000102_movie_t-2.jpg", "titan_clip_62_000102_movie_t-1.jpg", "titan_clip_62_000102_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down to yield to pedestrian", "environment_perception": "A dense urban commercial street with a single narrow one-way lane, no median, and smooth pavement shows light traffic moving steadily. A white box truck ahead in the ego lane continues straight at low speed and sets the pace. A pedestrian carrying an umbrella crosses the road from the right sidewalk toward the left in front of the truck and the ego vehicle, potentially entering the ego path. Several other pedestrians stay on the right sidewalk near storefronts. A yellow pedestrian crossing warning sign is visible on the right. Parked vans along the left curb constrict the lane and reduce lateral clearance.", "hazard_reasoning": "There is a pedestrian carrying an umbrella crossing the street, walking from the right side of the road to the left side. The driver should slow down to allow the pedestrian to cross safely and avoid a collision."}
{"id": "train_06300", "split": "train", "clip_key": "2020-0220-102630_032418_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_032418_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_032418_movie_t-3_augB1.jpg", "2020-0220-102630_032418_movie_t-2_augB1.jpg", "2020-0220-102630_032418_movie_t-1_augB1.jpg", "2020-0220-102630_032418_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way road with red-painted lane sections and no physical median comes into view, the pavement is dry and traffic is moderate near a signalized intersection. Ahead in the ego lane, a black motorcycle slows near the intersection because a dark truck ahead is slowing, constraining the ego vehicle. The dark boxy truck or van immediately ahead continues decelerating toward the junction while holding its lane. To the right, an oncoming white sedan proceeds through the junction clear of the ego path. A posted 25 speed limit sign stands on the left and traffic signals hang over the road.", "hazard_reasoning": "There is a black motorcycle slowing near the intersection, in the ego lane, because of the truck slowing ahead on the road. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_06301", "split": "train", "clip_key": "2020-0212-102546_012135_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "012135"}, "frames": ["2020-0212-102546_012135_movie_t-3.jpg", "2020-0212-102546_012135_movie_t-2.jpg", "2020-0212-102546_012135_movie_t-1.jpg", "2020-0212-102546_012135_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road approaches a signalized intersection with smooth pavement and light traffic. A white box truck is stopped directly ahead of the ego vehicle at a red light, so the ego car queues behind it. Another small truck waits ahead to the left near the same stop line, slightly offset in an adjacent lane but also stationary. Oncoming lanes to the right side of the roadway appear clear. Overhead signals facing the ego direction show red, and flexible posts mark a channelized divider on the right.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid colliding with the halted truck and running the red light."}
{"id": "train_06302", "split": "train", "clip_key": "titan_clip_1195_000174_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1195_000174_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1195_000174_movie_t-3_augB1.jpg", "titan_clip_1195_000174_movie_t-2_augB1.jpg", "titan_clip_1195_000174_movie_t-1_augB1.jpg", "titan_clip_1195_000174_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow shared lane paved with blocks, lacking lane markings or crosswalks; the surface is dry and traffic is light with only pedestrians ahead. A pedestrian in a white shirt carrying a backpack crosses from the left to the right directly in front of the car midblock because there is no crosswalk. Slightly farther ahead, a pair of pedestrians move from the left storefront toward the center and continue across, constraining the ego vehicle's pace. On the right edge just ahead, a worker pushes a green handcart from the curb toward the lane and may merge into the path.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, crossing the street from the left side to the right side, in front of the car, because there is no crosswalk. The driver should slow down to prevent a potential collision with the pedestrian crossing unexpectedly."}
{"id": "train_06303", "split": "train", "clip_key": "2020-0129-105040_059729_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "059729"}, "frames": ["2020-0129-105040_059729_movie_t-3.jpg", "2020-0129-105040_059729_movie_t-2.jpg", "2020-0129-105040_059729_movie_t-1.jpg", "2020-0129-105040_059729_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of crossing pedestrian", "environment_perception": "A narrow two-way urban street passes a level railroad crossing with no median and clean but patchy pavement, and traffic moves lightly through the tight corridor. Just beyond the tracks on the left, two pedestrians, including one wearing a purple coat and carrying a handbag, walk away while crossing along the lane edge, occupying part of the ego lane and slowing the approach. Ahead in the same direction, a white car rolls forward at low speed on the left side, setting a modest pace through the constricted section. To the right, an oncoming white van approaches the crossing near the centerline, reducing the available width. A 30 sign is posted, and the railroad gates remain raised.", "hazard_reasoning": "There is a pedestrian wearing a purple coat and carrying a handbag, crossing the street at the left side of the intersection, moving away from the ego car. The driver should be aware of the pedestrian to prevent entering their path as they cross."}
{"id": "train_06304", "split": "train", "clip_key": "titan_clip_473_000504_movie", "source": {"subset": "titan", "scenario": "clip_473", "frame": "000504"}, "frames": ["titan_clip_473_000504_movie_t-3.jpg", "titan_clip_473_000504_movie_t-2.jpg", "titan_clip_473_000504_movie_t-1.jpg", "titan_clip_473_000504_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be cautious of pedestrian ahead", "environment_perception": "A narrow urban shopping street with block-paved surface and no centerline runs between buildings; the pavement looks damp and motor traffic is light while pedestrian activity is moderate. The lane is partly narrowed on the right by a parked flatbed truck with cones and scaffolding. Ahead in the center, a pedestrian in a blue shirt walks toward the ego vehicle in the middle of the road, diverted there by the parked truck, and occupies the ego path. On the right at the truck's edge, a person stands by the cones near the travel line. Far up the street, a small vehicle continues away in the same direction.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking in the middle of the road, towards the ego car, because of the parked vehicle. The driver should be cautious because the pedestrian is forced into the travel lane and may not see the oncoming vehicle, increasing collision risk."}
{"id": "train_06305", "split": "train", "clip_key": "2020-0204-150838_077295_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "077295"}, "frames": ["2020-0204-150838_077295_movie_t-3.jpg", "2020-0204-150838_077295_movie_t-2.jpg", "2020-0204-150838_077295_movie_t-1.jpg", "2020-0204-150838_077295_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane roadway runs beneath an elevated structure, with three same-direction lanes, a right-side barrier, and a left-side construction zone; the pavement looks smooth and traffic is moderate as the road curves gently left. A white box truck ahead in the ego lane slows, constraining the ego vehicle's pace. In the adjacent right lane slightly ahead, a white car maintains speed and continues straight, remaining outside the ego path. Alongside on the far right, a large truck travels close in the rightmost lane, limiting room to merge right. The construction area on the left is fenced with scaffolding and cones, leaving a narrow shoulder.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of the red traffic lights. Because the truck ahead is decelerating for a red light, you need to slow down promptly to maintain a safe following distance and prevent a collision."}
{"id": "train_06306", "split": "train", "clip_key": "titan_clip_650_000342_movie", "source": {"subset": "titan", "scenario": "clip_650", "frame": "000342"}, "frames": ["titan_clip_650_000342_movie_t-3.jpg", "titan_clip_650_000342_movie_t-2.jpg", "titan_clip_650_000342_movie_t-1.jpg", "titan_clip_650_000342_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban residential street with no centerline and smooth asphalt extends ahead between low buildings, and traffic is very light with no vehicles present. On the right edge near the camera, a pedestrian walks toward the ego vehicle along the curb, encroaching slightly into the roadway and likely to pass close to its path. Farther ahead near the middle of the lane, another pedestrian in light clothing moves from right to left across the street, temporarily occupying the ego lane. A third person ahead on the left walks away along the roadside, keeping to the margin.", "hazard_reasoning": "There is a pedestrian wearing a gray sweater, walking on the right side of the road. The pedestrian may step off the sidewalk into the roadway unexpectedly, so slow down to avoid a potential collision."}
{"id": "train_06307", "split": "train", "clip_key": "2020-0131-135401_083127_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "083127"}, "frames": ["2020-0131-135401_083127_movie_t-3.jpg", "2020-0131-135401_083127_movie_t-2.jpg", "2020-0131-135401_083127_movie_t-1.jpg", "2020-0131-135401_083127_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes and no median shows smooth pavement and heavy, slow traffic. A white mini?an directly ahead in the ego lane slows because of congestion ahead, holding the ego vehicle to a crawl. In the right adjacent lane, a line of cars inches forward parallel to the ego path, restricting any chance to merge. A silver van to the right front gradually overtakes while staying close alongside. A green traffic signal hangs over the intersection ahead, but queues keep movement stop-and-go.", "hazard_reasoning": "There is a white mini-van slowing in front of the ego car because of traffic congestion ahead. The driver should slow down to keep a safe following distance and adapt to the traffic slowdown."}
{"id": "train_06308", "split": "train", "clip_key": "2020-0210-101957_024703_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "024703"}, "frames": ["2020-0210-101957_024703_movie_t-3.jpg", "2020-0210-101957_024703_movie_t-2.jpg", "2020-0210-101957_024703_movie_t-1.jpg", "2020-0210-101957_024703_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "be aware of the motorcycle ahead.", "environment_perception": "An urban two-way arterial with smooth pavement and a painted median carries light to moderate flow toward a signalized intersection. A bicyclist rides ahead in the ego lane, proceeding straight at a steady pace on the green light and potentially constraining the ego vehicle. To the right in the oncoming lane, a black van approaches and continues straight, separated by the median and not encroaching on the ego path. The traffic signal ahead is green.", "hazard_reasoning": "There is a black motorcycle driving in front of the ego car in the ego lane, because of the green traffic light. The driver should be aware that the motorcycle may react to a traffic signal change, requiring adjustment of speed to maintain a safe distance."}
{"id": "train_06309", "split": "train", "clip_key": "2020-0131-103016_073279_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "073279"}, "frames": ["2020-0131-103016_073279_movie_t-3.jpg", "2020-0131-103016_073279_movie_t-2.jpg", "2020-0131-103016_073279_movie_t-1.jpg", "2020-0131-103016_073279_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three same-direction lanes and a shrub median on the right runs between midrise buildings; the pavement is smooth and traffic moves at a moderate flow. A white van ahead in the ego lane continues straight and gradually pulls away from the camera, acting as the immediate lead. A second light van in the right lane slightly farther ahead holds a steady course at similar speed, remaining in its lane. Farther ahead in the left lane, a box truck near the curb moves slowly, tempering that lane's pace. No salient signals or hazards are visible, and the roadway remains clear of obstacles.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06310", "split": "train", "clip_key": "2020-0225-145150_008453_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "008453"}, "frames": ["2020-0225-145150_008453_movie_t-3.jpg", "2020-0225-145150_008453_movie_t-2.jpg", "2020-0225-145150_008453_movie_t-1.jpg", "2020-0225-145150_008453_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane one-way road runs past mid-rise apartments with a guardrail along the right; the pavement is smooth and traffic is light and steady. Ahead in the ego lane, a silver van drives straight and slowly pulls away. In the left lane, a darker boxy van with cargo on its roof holds a steady speed slightly ahead, remaining parallel to the ego vehicle. Farther ahead near the center of the road, a small dark car continues straight and recedes. No signals or unusual signs stand out, and no pedestrians or cyclists are visible.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car. The van ahead could slow down or brake unexpectedly, so the driver should follow at a safe distance."}
{"id": "train_06311", "split": "train", "clip_key": "2020-0220-151845_042620_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "042620"}, "frames": ["2020-0220-151845_042620_movie_t-3.jpg", "2020-0220-151845_042620_movie_t-2.jpg", "2020-0220-151845_042620_movie_t-1.jpg", "2020-0220-151845_042620_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane road runs under an elevated expressway, with a right-side guardrail and smooth pavement; traffic is moderate and flows steadily. Ahead in the ego lane, a small flatbed truck with a covered load travels at a similar speed, effectively setting the pace. In the right lane, a motorcycle slightly ahead accelerates and continues along the outer lane, remaining clear of the ego vehicle's path. To the left, a light-colored sedan and, farther ahead, a box truck proceed parallel in their lane without signaling or drifting toward the ego lane. Overhead directional signs are visible.", "hazard_reasoning": "There is a red truck slowing in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should slow down to maintain a safe distance and avoid collision with the truck ahead."}
{"id": "train_06312", "split": "train", "clip_key": "2020-0217-110854_004210_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-110854_004210_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-110854_004210_movie_t-3_augB1.jpg", "2020-0217-110854_004210_movie_t-2_augB1.jpg", "2020-0217-110854_004210_movie_t-1_augB1.jpg", "2020-0217-110854_004210_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with one narrow lane in each direction and no median stretches ahead, the worn pavement leading through slow, queued traffic. A white sedan directly ahead in the ego lane slows with brake lights because congestion forms in front of it. Farther ahead in the same direction, a white box truck creeps and occasionally stops, creating the queue that constrains the sedan and the ego vehicle. Pedestrians on both sidewalks walk and stand near storefronts close to the curb, and parked bicycles plus roadside scaffolding line the right side.", "hazard_reasoning": "There is a white sedan slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. You should slow down to maintain a safe following distance and avoid a rear-end collision under these conditions."}
{"id": "train_06313", "split": "train", "clip_key": "titan_clip_119_000144_movie", "source": {"subset": "titan", "scenario": "clip_119", "frame": "000144"}, "frames": ["titan_clip_119_000144_movie_t-3.jpg", "titan_clip_119_000144_movie_t-2.jpg", "titan_clip_119_000144_movie_t-1.jpg", "titan_clip_119_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "In a narrow urban two-way street lined by tall buildings, the ego vehicle proceeds in the left lane on smooth pavement with no median and light traffic; no oncoming vehicles appear. A white van ahead in the same lane travels away and loosely sets the pace. On the left edge of the road, a pedestrian wearing a cap, black T-shirt, and brown pants pushes a trolley away from the ego vehicle along the curb, sharing the lane while keeping to the side. On the right sidewalk, another pedestrian walks forward beside shopfronts. Numerous parked bicycles line both curbs, tightening the available lane.", "hazard_reasoning": "There is a pedestrian wearing a cap, black t-shirt, and brown pants and pushing a trolley on the left side of the road away from the ego car. The driver should carefully manoeuvre to avoid a collision with this pedestrian who may enter the vehicle's path."}
{"id": "train_06314", "split": "train", "clip_key": "titan_clip_578_000330_movie", "source": {"subset": "titan", "scenario": "clip_578", "frame": "000330"}, "frames": ["titan_clip_578_000330_movie_t-3.jpg", "titan_clip_578_000330_movie_t-2.jpg", "titan_clip_578_000330_movie_t-1.jpg", "titan_clip_578_000330_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban two-way street with a single narrow lane in each direction, no median, and smooth dry pavement carries light traffic as the ego proceeds in the left lane. Ahead on the left, a white truck is parked at the curb because of construction work on the building, with cones nearby that slightly narrow the lane. To the right, an oncoming white van approaches and passes in its lane without impeding the ego path. No pedestrians are in the roadway, and bicycles sit parked along the left sidewalk.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because of construction work on the building. The stationary vehicle and cones reduce available lane width, so the driver must navigate carefully to avoid collision."}
{"id": "train_06315", "split": "train", "clip_key": "2020-0203-114632_028861_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "028861"}, "frames": ["2020-0203-114632_028861_movie_t-3.jpg", "2020-0203-114632_028861_movie_t-2.jpg", "2020-0203-114632_028861_movie_t-1.jpg", "2020-0203-114632_028861_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to merging black van", "environment_perception": "An urban arterial with two lanes in the ego direction and opposing traffic on the far side runs through midrise buildings; the pavement is dry and smooth, and flow is moderate. A short row of flexible bollards separates a narrow right-side lane from the through lanes. Ahead, a black van changes from the left lane into the ego lane and settles in front of the camera car, constraining its pace. Slightly farther ahead to the right, a white car continues straight in the lane beyond the bollards without merging. At the near left curb, two pedestrians wait by the crosswalk and remain on the sidewalk. Overhead blue directional signs span the road, and no obstacles are present in the lane.", "hazard_reasoning": "There is a black van changing lanes in front of the ego car, from the left lane to the ego lane. The black van's lane change may encroach on the ego-vehicle's path, requiring the driver to yield to avoid a collision."}
{"id": "train_06316", "split": "train", "clip_key": "2020-0205-103411_097101_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "097101"}, "frames": ["2020-0205-103411_097101_movie_t-3.jpg", "2020-0205-103411_097101_movie_t-2.jpg", "2020-0205-103411_097101_movie_t-1.jpg", "2020-0205-103411_097101_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and a central divider carries moderate traffic that compresses near an intersection. Ahead in the ego lane, a small white flatbed truck with a ladder is stopped at a red traffic light, directly holding the ego vehicle. In the lane to the left, a white hatchback queues and slows to a stop in parallel with the truck, further setting the pace. Alongside on the far left, a white van creeps forward next to the ego car, limiting room to change lanes. A signal head ahead shows red over the intersection.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, because of a red traffic light. You must stop to avoid a collision with the halted truck at the intersection."}
{"id": "train_06317", "split": "train", "clip_key": "2020-0131-135401_060399_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "060399"}, "frames": ["2020-0131-135401_060399_movie_t-3.jpg", "2020-0131-135401_060399_movie_t-2.jpg", "2020-0131-135401_060399_movie_t-1.jpg", "2020-0131-135401_060399_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single lane in each direction has dry, well-marked pavement and no median, and traffic bunches near a signalized intersection. A white van is stopped directly ahead in the ego lane at the stop line because the traffic light ahead is red, holding the ego vehicle. In the oncoming lane, a large truck slows and waits at the intersection opposite, remaining in its lane and not entering the ego path. On the left side near the crosswalk, pedestrians walk along the sidewalk and cluster at the corner, potentially entering the crossing when permitted.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to prevent a rear-end collision at the red light."}
{"id": "train_06318", "split": "train", "clip_key": "titan_clip_660_000414_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_660_000414_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_660_000414_movie_t-3_augB1.jpg", "titan_clip_660_000414_movie_t-2_augB1.jpg", "titan_clip_660_000414_movie_t-1_augB1.jpg", "titan_clip_660_000414_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with one unmarked lane runs between dense storefronts, the asphalt smooth and vehicle flow light amid heavy pedestrian activity. Two pedestrians wearing white shirts and black pants with handbags walk away from the ego vehicle in the middle of the road, occupying the path and constraining speed. Far ahead, a small white truck sits stopped in the same lane near a side street, further narrowing the through space. On the left, a woman steps off the curb and walks along the roadway toward the ego vehicle, close enough that she may enter the lane. Orange cones and shop displays tighten the right margin, creating a confined corridor.", "hazard_reasoning": "There are two pedestrians wearing a white shirt, black pants, and a handbag, walking in the middle of the road away from the ego car. They are in the vehicle's path, so the driver should slow down to maintain a safe distance and avoid collision."}
{"id": "train_06319", "split": "train", "clip_key": "2020-0225-102455_012875_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "012875"}, "frames": ["2020-0225-102455_012875_movie_t-3.jpg", "2020-0225-102455_012875_movie_t-2.jpg", "2020-0225-102455_012875_movie_t-1.jpg", "2020-0225-102455_012875_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road with no median approaches a signalized intersection, the pavement is dry and smooth, and traffic is light. A gray dump truck directly ahead in the ego lane moves forward through the intersection under a green signal, leading the ego car and setting its pace. An oncoming white minivan travels straight through its right-side lane without interacting with the ego path. A pedestrian on the right sidewalk walks beside the crosswalk, staying clear of the roadway. Along the left curb, a small coned work area with a stopped van creates roadside activity but does not impede the lane.", "hazard_reasoning": "There is a gray truck moving forward in front of the ego car in the ego lane, because of the green traffic light. The green signal may change soon, so the driver should be aware of the traffic light status ahead to anticipate any sudden stops."}
{"id": "train_06320", "split": "train", "clip_key": "2020-0204-103442_086345_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "086345"}, "frames": ["2020-0204-103442_086345_movie_t-3.jpg", "2020-0204-103442_086345_movie_t-2.jpg", "2020-0204-103442_086345_movie_t-1.jpg", "2020-0204-103442_086345_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes, no median, and smooth asphalt appears under overcast skies; traffic is moderate and the flow eases near a signalized intersection ahead. A gray van directly in front of the ego car slows and sets the pace. Ahead left in the adjacent lane, a small white van proceeds straight at a similar speed. In the right lane, a black SUV travels slightly ahead, moving forward in parallel with the ego vehicle. A posted 40 speed limit sign is visible on the left.", "hazard_reasoning": "There is a gray van slowing down in front of the ego car. The gray van is reducing speed directly ahead, so you should slow down to maintain a safe following distance and avoid a potential collision."}
{"id": "train_06321", "split": "train", "clip_key": "titan_clip_891_000198_movie", "source": {"subset": "titan", "scenario": "clip_891", "frame": "000198"}, "frames": ["titan_clip_891_000198_movie_t-3.jpg", "titan_clip_891_000198_movie_t-2.jpg", "titan_clip_891_000198_movie_t-1.jpg", "titan_clip_891_000198_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of the pedestrian crossing ahead.", "environment_perception": "A dense urban street with one narrow lane and no median runs between shops on the left and a park wall on the right; the pavement looks smooth and traffic is light to moderate. Parked and stopping cars along the left curb narrow the usable lane. Mid-distance, a person in a gray T-shirt crosses the roadway from right to left in the middle of the road, moving through the ego lane and directly affecting its path. Farther ahead, a cyclist rides along the center of the lane away from the camera, setting a slower pace for following vehicles. Additional cars ahead in the same direction roll slowly near the curbside stops.", "hazard_reasoning": "There is a pedestrian wearing a gray t-shirt, crossing the street in the middle of the road, from the right side to the left side. The pedestrian is crossing unexpectedly in the lane of travel, posing a risk of collision, so the driver should be alert and cautious."}
{"id": "train_06322", "split": "train", "clip_key": "2020-0214-102601_011826_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "011826"}, "frames": ["2020-0214-102601_011826_movie_t-3.jpg", "2020-0214-102601_011826_movie_t-2.jpg", "2020-0214-102601_011826_movie_t-1.jpg", "2020-0214-102601_011826_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban divided arterial with two lanes in the ego direction has smooth asphalt and a low planted median with a guardrail on the right; traffic is moderate, denser in the curbside lane. Ahead in the ego lane, a white minivan is stopped at a red traffic light, momentarily holding the ego car. In the right adjacent lane, a purple box truck and several white vans queue and creep forward toward the same signal. Farther ahead, a small dark hatchback continues slowly, keeping gaps short. No hazards or work zones are visible.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car, because of a red traffic light. The driver must stop to avoid a collision with the stationary vehicle at the red light."}
{"id": "train_06323", "split": "train", "clip_key": "titan_clip_393_000048_movie", "source": {"subset": "titan", "scenario": "clip_393", "frame": "000048"}, "frames": ["titan_clip_393_000048_movie_t-3.jpg", "titan_clip_393_000048_movie_t-2.jpg", "titan_clip_393_000048_movie_t-1.jpg", "titan_clip_393_000048_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked gray van", "environment_perception": "An urban commercial street with interlocking-brick pavement runs straight between buildings, a narrow two-way road without a centerline and with light traffic. A small black minitruck ahead near the center moves slowly in the ego lane, constraining the pace. A woman from the left sidewalk steps into the roadway and walks diagonally across ahead, likely to cross the ego path. A man on the right side walks toward the camera close to the curb, staying near the edge but within the vehicle's vicinity. A gray van is parked on the left side of the road, reducing the usable width, and more cars are parked in a lot to the left, with no oncoming vehicles visible.", "hazard_reasoning": "There is a gray van parked on the left side of the road. The parked van reduces available road space and poses a collision risk, so the driver should manoeuvre around it to maintain safe clearance."}
{"id": "train_06324", "split": "train", "clip_key": "2020-0131-135401_063595_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "063595"}, "frames": ["2020-0131-135401_063595_movie_t-3.jpg", "2020-0131-135401_063595_movie_t-2.jpg", "2020-0131-135401_063595_movie_t-1.jpg", "2020-0131-135401_063595_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane one-way street runs between mid-rise buildings, the pavement is dry and smooth, and traffic is slow and queued toward an intersection ahead. A white van ahead in the ego lane slows in front of the ego car because of a red traffic light ahead, setting the pace. To the right, a large dump truck in the adjacent lane creeps forward alongside, limiting the ego vehicle's ability to change lanes. Farther ahead in that right lane, a line of cars also edges forward toward the same junction, contributing to the congestion. Overhead blue lane-use signs show straight-ahead arrows for both lanes. Temporary barriers and fencing line the left curb, narrowing the usable space but remaining outside the travel lane.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should slow down to maintain a safe distance from the decelerating van and prepare to stop for the red light."}
{"id": "train_06325", "split": "train", "clip_key": "titan_clip_667_000450_movie", "source": {"subset": "titan", "scenario": "clip_667", "frame": "000450"}, "frames": ["titan_clip_667_000450_movie_t-3.jpg", "titan_clip_667_000450_movie_t-2.jpg", "titan_clip_667_000450_movie_t-1.jpg", "titan_clip_667_000450_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian crossing", "environment_perception": "An urban two-way back street with a single narrow lane and no median runs past small shops; the pavement is smooth and vehicular traffic is light with no other cars visible. On the right ahead, a pedestrian carrying an umbrella walks away from the ego vehicle in the roadway because a parked motorcycle blocks her path, and she may edge into the ego lane. On the near right, a woman walks toward the camera along the curb, narrowing the available space beside the ego vehicle. Farther ahead near the center, several pedestrians drift along and intermittently cross the lane, collectively constraining the pace. Parked scooters and storefronts line the right side and encroach slightly on the carriageway, while a narrow green shoulder runs along the left.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and walking on the right side of the road, away from the ego car, because a parked motorcycle is blocking her path. The driver should slow down because the pedestrian may step into the travel lane to avoid the obstruction."}
{"id": "train_06326", "split": "train", "clip_key": "2020-0210-101957_019309_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "019309"}, "frames": ["2020-0210-101957_019309_movie_t-3.jpg", "2020-0210-101957_019309_movie_t-2.jpg", "2020-0210-101957_019309_movie_t-1.jpg", "2020-0210-101957_019309_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "An urban multilane arterial with three same-direction lanes and smooth pavement carries heavy, slow traffic approaching an intersection. A gray motorcycle waits directly ahead in the ego lane, stopped because a red traffic light ahead has halted the line. A white van slightly farther ahead in the same lane is stationary and keeps the motorcycle and ego car from moving. In the left lane a black minivan is stopped alongside the ego vehicle, while in the right lane a large box truck stands a little farther forward, narrowing the view toward the junction. Overhead blue guide signs for Route 8 are visible.", "hazard_reasoning": "There is a gray motorcycle in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop immediately to maintain safe distance and comply with the red light."}
{"id": "train_06327", "split": "train", "clip_key": "2020-0207-151349_065779_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "065779"}, "frames": ["2020-0207-151349_065779_movie_t-3.jpg", "2020-0207-151349_065779_movie_t-2.jpg", "2020-0207-151349_065779_movie_t-1.jpg", "2020-0207-151349_065779_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with smooth asphalt and clear markings runs through mid-rise buildings, divided from oncoming lanes by a guardrail median; traffic is moderate and briefly slowing. A black minivan ahead in the ego lane is stopped because of congestion ahead, constraining the ego car. To its right, a white sedan in the adjacent same-direction lane proceeds steadily and pulls ahead. Farther right, another white car merges left across the hatched area into the through lane, moving into the flow ahead. Overhead blue direction signs are visible on gantries. No pedestrians or cyclists appear, and the roadway is free of obstacles.", "hazard_reasoning": "There is a black minivan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver needs to stop because the minivan halted by congestion poses a collision risk if speed is not reduced."}
{"id": "train_06328", "split": "train", "clip_key": "titan_clip_144_000198_movie", "source": {"subset": "titan", "scenario": "clip_144", "frame": "000198"}, "frames": ["titan_clip_144_000198_movie_t-3.jpg", "titan_clip_144_000198_movie_t-2.jpg", "titan_clip_144_000198_movie_t-1.jpg", "titan_clip_144_000198_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for pedestrian crossing", "environment_perception": "A dense urban two-lane road with no median and smooth pavement approaches a zebra crossing at an intersection, and traffic slows to a moderate pace near the crosswalk. A black car ahead in the same lane reduces speed to near a stop before the crossing, constraining the ego vehicle. A scooter immediately ahead in the ego lane creeps forward, matching the slowdown. On the right, a woman wearing a white shirt and a black skirt, carrying an umbrella, crosses the pedestrian crossing from right to left in front of the lane.", "hazard_reasoning": "There is a woman wearing a white shirt and a black skirt, carrying an umbrella, and crossing the street, at a pedestrian crossing, from the right side to the left side. Slow down because she is actively crossing the street and may unexpectedly step into your lane."}
{"id": "train_06329", "split": "train", "clip_key": "titan_clip_395_000084_movie", "source": {"subset": "titan", "scenario": "clip_395", "frame": "000084"}, "frames": ["titan_clip_395_000084_movie_t-3.jpg", "titan_clip_395_000084_movie_t-2.jpg", "titan_clip_395_000084_movie_t-1.jpg", "titan_clip_395_000084_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with a single shared lane climbs gently uphill on interlocking pavers, with no centerline or median; pavement looks dry and intact, and vehicular traffic is light while pedestrian activity is heavy. On the left side of the roadway, a pedestrian in a white shirt carrying a handbag walks away from the ego vehicle within the lane because the adjacent sidewalk is clogged by other pedestrians, so she may occupy the ego path. Farther ahead near the lane center, a man with a backpack walks uphill away from the ego car, effectively setting the pace. At the right edge, another pedestrian approaches toward the camera along the curb, keeping to the side but close to the travel path. Shop signs and menu boards line both sides, narrowing the usable space.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and carrying a handbag, walking along the left side of the road, away from the ego car, because the sidewalk is clogged by other pedestrians. The pedestrian's presence on the roadway requires the driver to slow down to avoid a potential collision."}
{"id": "train_06330", "split": "train", "clip_key": "2020-0207-101955_107309_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "107309"}, "frames": ["2020-0207-101955_107309_movie_t-3.jpg", "2020-0207-101955_107309_movie_t-2.jpg", "2020-0207-101955_107309_movie_t-1.jpg", "2020-0207-101955_107309_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial runs under an elevated roadway, the pavement dry and smooth, with heavy stop-and-go traffic throughout. The ego car travels in the leftmost lane. A blue sedan directly ahead in the ego lane is stopped because congestion builds in front, holding the ego vehicle. In the adjacent left lane, a small flatbed truck with a green-tarped load sits nearly stationary just ahead, limiting any chance to pass. To the right, a red hatchback and a white van in the middle lane inch forward parallel to the ego car, remaining close alongside.", "hazard_reasoning": "There is a blue sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The halted vehicle signals slowing or stopped traffic and the driver must stop promptly to avoid a rear-end collision."}
{"id": "train_06331", "split": "train", "clip_key": "titan_clip_497_000444_movie", "source": {"subset": "titan", "scenario": "clip_497", "frame": "000444"}, "frames": ["titan_clip_497_000444_movie_t-3.jpg", "titan_clip_497_000444_movie_t-2.jpg", "titan_clip_497_000444_movie_t-1.jpg", "titan_clip_497_000444_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban two-way street with no median and smooth pavement is shown, and traffic is light with the oncoming lane empty. Ahead on the left at the curb in the ego lane, a white van is parked because it is being loaded, occupying part of the lane and constraining the ego vehicle's available space. A hand truck and packages rest on the roadway just behind the van, creating a small stationary obstacle near the curb. No other moving road users or salient traffic signals are visible.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane, because it is being loaded. The parked van blocks the ego lane, requiring the driver to manoeuvre around it carefully to avoid a collision."}
{"id": "train_06332", "split": "train", "clip_key": "titan_clip_554_000444_movie", "source": {"subset": "titan", "scenario": "clip_554", "frame": "000444"}, "frames": ["titan_clip_554_000444_movie_t-3.jpg", "titan_clip_554_000444_movie_t-2.jpg", "titan_clip_554_000444_movie_t-1.jpg", "titan_clip_554_000444_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban side street with smooth pavement and a single left-side travel lane passes a park and office buildings; traffic is light under bright sun. A black van stands ahead at the left curb, partially intruding into the ego lane and slowing the approach. A pedestrian wearing a cap and red shirt crosses mid-block from the van toward the right side of the road in front of the ego path, briefly occupying the lane. Two other pedestrians move along the left sidewalk near the hedge, remaining off the roadway. The right side shows a wide hatched area and a bus shelter, with no oncoming vehicles or signals clearly visible.", "hazard_reasoning": "There is a pedestrian wearing a cap and red shirt, crossing in the middle of the road to the right side. Because the pedestrian is entering the driver's path without traffic controls, the driver must stop to avoid a collision."}
{"id": "train_06333", "split": "train", "clip_key": "2020-0227-153144_016521_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "016521"}, "frames": ["2020-0227-153144_016521_movie_t-3.jpg", "2020-0227-153144_016521_movie_t-2.jpg", "2020-0227-153144_016521_movie_t-1.jpg", "2020-0227-153144_016521_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with at least three lanes in the ego direction shows clean pavement and slow, congested flow, with no physical median visible. A white hatchback directly ahead in the ego lane is stopped because of congestion and holds the ego car. To the right, a dark van slightly ahead proceeds slowly in its lane, continuing straight as traffic inches forward. On the far right, a motor scooter overtakes along the outer lane and continues straight past the slow queue.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle."}
{"id": "train_06334", "split": "train", "clip_key": "2020-0214-145407_020445_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "020445"}, "frames": ["2020-0214-145407_020445_movie_t-3.jpg", "2020-0214-145407_020445_movie_t-2.jpg", "2020-0214-145407_020445_movie_t-1.jpg", "2020-0214-145407_020445_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs between office buildings and trees, with three same-direction lanes on dry asphalt and heavy queued traffic at an intersection. Ahead in the ego lane, a black minivan is stopped at the red light, holding the ego vehicle. In the left lane, a white van slightly ahead waits in the queue beside the ego car, restricting any lane change left. Farther ahead in the adjacent lane, a large white box truck also stands still under the signal, contributing to the backup. In the right lane, a white sedan just ahead remains stopped with the line. The overhead traffic signal ahead shows red.", "hazard_reasoning": "There is a black minivan stopped in the ego lane because of a red traffic light, in front of the ego car. The minivan is immobilized at the red light, so the driver must stop to maintain a safe following distance and avoid a collision."}
{"id": "train_06335", "split": "train", "clip_key": "2020-0218-103119_035439_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0218-103119_035439_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0218-103119_035439_movie_t-3_augB1.jpg", "2020-0218-103119_035439_movie_t-2_augB1.jpg", "2020-0218-103119_035439_movie_t-1_augB1.jpg", "2020-0218-103119_035439_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way road with smooth pavement and a narrow painted divider passes between mid-rise buildings, and traffic flows slowly. A white box truck directly ahead in the ego lane slows and nearly stops because of congestion ahead, constraining the ego vehicle's pace. Slightly ahead to the left, a green city bus is stopped near the curb in the same direction, adding to the queue. The opposing lane on the right appears clear of immediate oncoming vehicles.", "hazard_reasoning": "There's a white truck slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The truck's deceleration indicates a buildup of slow-moving traffic ahead, so the driver must stop to maintain a safe distance."}
{"id": "train_06336", "split": "train", "clip_key": "2020-0227-104226_016160_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "016160"}, "frames": ["2020-0227-104226_016160_movie_t-3.jpg", "2020-0227-104226_016160_movie_t-2.jpg", "2020-0227-104226_016160_movie_t-1.jpg", "2020-0227-104226_016160_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial under elevated structures approaches a wide signalized intersection with clean pavement and moderate, steadily moving traffic. A white box truck directly ahead in the ego lane drives away from the camera as the signal is green, pulling ahead and setting the pace. To the left, a white minivan in the adjacent same-direction lane proceeds straight at similar speed without merging toward the ego lane. On the right side near the crosswalk, a pedestrian waits by the railing and does not step into the roadway. The traffic lights facing the ego direction show green, allowing vehicles to clear the junction.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because of a green traffic light. The truck's movement under a green light indicates ongoing traffic flow; following it helps maintain safe distance and smooth travel."}
{"id": "train_06337", "split": "train", "clip_key": "2020-0226-101332_062321_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "062321"}, "frames": ["2020-0226-101332_062321_movie_t-3.jpg", "2020-0226-101332_062321_movie_t-2.jpg", "2020-0226-101332_062321_movie_t-1.jpg", "2020-0226-101332_062321_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes runs between tall buildings; the asphalt is smooth and traffic is queued at an intersection. The overhead traffic signal ahead shows red, keeping vehicles stopped. A gray van directly ahead in the ego lane waits near the stop line and constrains the ego car's pace. To the right, a larger silver van in the adjacent lane edges forward toward the line. In the left lane, a white kei van pulls up alongside while a red taxi waits further ahead, forming a short queue. Pedestrians cluster on the far-right sidewalk near the crosswalk.", "hazard_reasoning": "There is a gray van accelerating in the ego lane, in front of the ego car, because of a green traffic light. The van's acceleration indicates that traffic is moving, and the driver should also start moving promptly to maintain safe traffic flow and avoid blocking the intersection."}
{"id": "train_06338", "split": "train", "clip_key": "titan_clip_1084_000348_movie", "source": {"subset": "titan", "scenario": "clip_1084", "frame": "000348"}, "frames": ["titan_clip_1084_000348_movie_t-3.jpg", "titan_clip_1084_000348_movie_t-2.jpg", "titan_clip_1084_000348_movie_t-1.jpg", "titan_clip_1084_000348_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban back street with a single narrow lane and no median runs between close buildings; the pavement is worn but intact, and no vehicles are visible, so traffic is light. Ahead on the left, a woman carrying a handbag and wearing a black dress walks away along the roadway edge within the ego lane, constraining the vehicle's pace. Very near at the left curb, a man in a red shirt pauses and walks beside the storefront close to the lane. The passage is tight with buildings flush to the sidewalk and a slight bend ahead.", "hazard_reasoning": "There is a woman carrying a handbag, wearing a black dress, and walking on the left side of the road, away from the ego car. The pedestrian may change direction or step into the vehicle's path unexpectedly, so the driver should slow down to ensure safety."}
{"id": "train_06339", "split": "train", "clip_key": "2020-0129-105040_100380_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "100380"}, "frames": ["2020-0129-105040_100380_movie_t-3.jpg", "2020-0129-105040_100380_movie_t-2.jpg", "2020-0129-105040_100380_movie_t-1.jpg", "2020-0129-105040_100380_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of parked vehicle", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs past shops and a hedge median; the pavement looks smooth and traffic is light to moderate, moving steadily. A silver van ahead in the ego lane edges right and briefly slows to pass a parked vehicle at the left curb, maneuvering away from the ego car before continuing straight. A white flatbed truck farther ahead in the adjacent right lane proceeds straight at a steady pace, limiting the van's ability to merge. On the left shoulder a short work zone with cones and several workers stays behind the line, narrowing the margin but not entering the lane.", "hazard_reasoning": "There is a silver van maneuvering in the left lane, away from the ego car, because of a parked vehicle. The parked vehicle constricts the lane and forces nearby vehicles to adjust their path, so the driver should be aware of the parked vehicle to avoid sudden maneuvers."}
{"id": "train_06340", "split": "train", "clip_key": "2020-0127-132751_007874_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "007874"}, "frames": ["2020-0127-132751_007874_movie_t-3.jpg", "2020-0127-132751_007874_movie_t-2.jpg", "2020-0127-132751_007874_movie_t-1.jpg", "2020-0127-132751_007874_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to prevent rear-end collision", "environment_perception": "An urban elevated multi-lane road with guardrails and smooth pavement, including a red-surfaced left lane, carries heavy stop-and-go traffic. A brown dump truck directly ahead in the ego lane is stopped because of congestion, holding the ego car. To the right, a white minivan ahead and a black taxi in the farther right lane creep forward, limiting room to merge. Along the left edge, a dark car moves alongside in the red lane at a similar pace.", "hazard_reasoning": "A brown truck is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid rear-ending the halted truck."}
{"id": "train_06341", "split": "train", "clip_key": "2020-0207-101955_018145_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "018145"}, "frames": ["2020-0207-101955_018145_movie_t-3.jpg", "2020-0207-101955_018145_movie_t-2.jpg", "2020-0207-101955_018145_movie_t-1.jpg", "2020-0207-101955_018145_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction runs straight, divided by double white center lines; the pavement is dry and traffic is moderate. A small brown covered truck is directly ahead in the ego lane and slows, so the ego car follows its reduced pace. In the adjacent right same-direction lane no vehicle is immediately alongside, leaving it open. In the oncoming lanes to the right, a white van followed by a larger truck approaches at a steady pace within their lanes and does not interact. Bags of trash sit on the left curb by the railing but remain clear of the roadway.", "hazard_reasoning": "There is a brown truck slowing down in front of the ego car. The truck's reduced speed may force the driver to brake suddenly; therefore, slow down promptly to maintain a safe distance."}
{"id": "train_06342", "split": "train", "clip_key": "titan_clip_652_000060_movie", "source": {"subset": "titan", "scenario": "clip_652", "frame": "000060"}, "frames": ["titan_clip_652_000060_movie_t-3.jpg", "titan_clip_652_000060_movie_t-2.jpg", "titan_clip_652_000060_movie_t-1.jpg", "titan_clip_652_000060_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban street with a narrow undivided two-way lane slopes gently uphill; the asphalt is smooth with a manhole cover and traffic is light with no vehicles visible. Ahead in the ego lane, two pedestrians dressed in black walk away from the vehicle along the roadway, using it because there is little or no sidewalk and they occupy part of the ego path. To the right in the foreground, a red delivery motorcycle is parked at the curb and protrudes slightly into the lane, narrowing the available space.", "hazard_reasoning": "There are two pedestrians wearing a black outfit, walking in front of the ego car, away from the ego car, because there is no sidewalk. Since pedestrians are walking on the road without a sidewalk, the driver must slow down to avoid collision."}
{"id": "train_06343", "split": "train", "clip_key": "2020-0210-142719_003169_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "003169"}, "frames": ["2020-0210-142719_003169_movie_t-3.jpg", "2020-0210-142719_003169_movie_t-2.jpg", "2020-0210-142719_003169_movie_t-1.jpg", "2020-0210-142719_003169_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of the cyclist cutting in", "environment_perception": "On an urban commercial street, the ego car proceeds along a two-way single-lane road with no median toward a railway underpass; the pavement is smooth and traffic is light. A cyclist carrying a handbag rides just ahead and cuts into the ego lane from the left to pass a parked vehicle, moving slowly in front of the ego car and constraining its pace. An oncoming white truck continues straight in the opposite lane toward the underpass without changing course. Parked vehicles line the curbs, including a flatbed truck with pipes and orange cones that protrude slightly into the lane and prompt the cyclist's maneuver.", "hazard_reasoning": "There is a cyclist carrying a handbag cutting-in to the ego lane, in front of the ego car, because of a parked vehicle on the left. This sudden lane change can bring the cyclist into your path unexpectedly, so you should remain vigilant and adjust your driving to avoid a potential collision."}
{"id": "train_06344", "split": "train", "clip_key": "2020-0131-135401_072509_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-135401_072509_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-135401_072509_movie_t-3_augB1.jpg", "2020-0131-135401_072509_movie_t-2_augB1.jpg", "2020-0131-135401_072509_movie_t-1_augB1.jpg", "2020-0131-135401_072509_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial carries heavy but moving traffic on smooth dry pavement, with three lanes in the ego direction and no physical median visible. Directly ahead in the ego lane, a black car slows because congestion forms farther up the road, constraining the ego vehicle's pace. To the left, a black van travels nearly alongside and keeps its lane, limiting space for a leftward merge. On the right, a dark minivan runs slightly ahead in the adjacent lane and continues with the flow. Farther forward in the right lane, a blue box truck closes on the queue and brakes, contributing to the slowdown. An overhead gantry sign spans the roadway.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should follow the vehicle ahead to maintain a safe distance and adapt to slower traffic flow."}
{"id": "train_06345", "split": "train", "clip_key": "titan_clip_1130_000564_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1130_000564_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1130_000564_movie_t-3_augB1.jpg", "titan_clip_1130_000564_movie_t-2_augB1.jpg", "titan_clip_1130_000564_movie_t-1_augB1.jpg", "titan_clip_1130_000564_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban residential scene shows a very narrow two-way street with no median and smooth pavement; no vehicles are present so traffic is light as the lane gently curves right under roadside trees. A male pedestrian in a white shirt and black pants walks away on the left side in the ego lane, occupying the path and setting a slow pace. Beside him on the far left, a woman with a blue bag also walks away close to the buildings, still within the lane. Farther ahead, several other pedestrians are visible along the center and right edge, some moving away and one approaching, keeping close to the curb but remaining near the travel lane.", "hazard_reasoning": "There is a male pedestrian wearing a white shirt and black pants, who is walking down the left side of the road, away from the ego-car, in the ego lane. The pedestrian is in the vehicle's path and may step further into the lane, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_06346", "split": "train", "clip_key": "2020-0212-102546_074781_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "074781"}, "frames": ["2020-0212-102546_074781_movie_t-3.jpg", "2020-0212-102546_074781_movie_t-2.jpg", "2020-0212-102546_074781_movie_t-1.jpg", "2020-0212-102546_074781_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two same-direction lanes and a planted median is dry and well maintained, and traffic is light. A yellow concrete mixer truck is directly ahead in the ego lane, driving away at a steady pace and effectively setting the ego vehicle's speed. Farther ahead in the same lane, a smaller yellow truck continues straight, gradually increasing the gap. A few pedestrians move along the sidewalk to the right behind a guardrail, separated from the roadway and not affecting traffic.", "hazard_reasoning": "There is a yellow truck driving in the ego lane away from the ego car. Its slow speed and position near the median can reduce your visibility, so you should be aware of the slow truck ahead."}
{"id": "train_06347", "split": "train", "clip_key": "2020-0131-135401_082392_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "082392"}, "frames": ["2020-0131-135401_082392_movie_t-3.jpg", "2020-0131-135401_082392_movie_t-2.jpg", "2020-0131-135401_082392_movie_t-1.jpg", "2020-0131-135401_082392_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs straight with two lanes in the ego direction, separated from a parallel right-side carriageway by a metal barrier; the pavement is dry and smooth, and traffic compresses into slow-moving congestion. A white van directly ahead in the ego lane is stopped because of the queue and constrains the ego car's pace. A white compact car in the left lane slightly ahead proceeds slowly past the ego vehicle and continues forward. Farther ahead, clusters of cars across both lanes creep along, keeping the flow heavy and inconsistent.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle."}
{"id": "train_06348", "split": "train", "clip_key": "titan_clip_235_000156_movie", "source": {"subset": "titan", "scenario": "clip_235", "frame": "000156"}, "frames": ["titan_clip_235_000156_movie_t-3.jpg", "titan_clip_235_000156_movie_t-2.jpg", "titan_clip_235_000156_movie_t-1.jpg", "titan_clip_235_000156_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban alley-like street with brick pavement and one narrow lane runs between tall buildings, with no divider and smooth surface; traffic is light and slow. Ahead along the left edge, a pedestrian in a blue shirt carrying a handbag walks away from the ego car with another person, remaining close to the curb and near the ego's path. A red box truck is stopped on the left beside the ego vehicle, encroaching slightly into the lane and narrowing the passage. Farther ahead in the same direction, a small delivery truck proceeds slowly along the lane, limiting forward speed. A parked bicycle and shopfronts line the right side.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and a handbag, walking along the left side of the road, away from the ego car. The pedestrian could step into the path unexpectedly, so the driver should manoeuvre carefully around them."}
{"id": "train_06349", "split": "train", "clip_key": "titan_clip_1198_000198_movie", "source": {"subset": "titan", "scenario": "clip_1198", "frame": "000198"}, "frames": ["titan_clip_1198_000198_movie_t-3.jpg", "titan_clip_1198_000198_movie_t-2.jpg", "titan_clip_1198_000198_movie_t-1.jpg", "titan_clip_1198_000198_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down for the cyclist ahead", "environment_perception": "A narrow urban two-way street with a single undivided lane runs between shops and apartments; the pavement is intact and traffic is light. There is a cyclist wearing a blue shirt cycling in the middle of the lane toward the ego car, occupying the path as oncoming traffic. A scooter with a large covered load passes very close along the right in the same direction and pulls ahead, briefly reducing lateral space. A pedestrian walks on the right sidewalk near storefronts while others remain by parked bicycles on the left. A blue no-parking sign stands on the left, and bicycles line both curbs.", "hazard_reasoning": "There is a cyclist wearing a blue shirt, cycling in the middle of the lane, toward the ego car. You should slow down to maintain a safe distance from the cyclist and avoid a potential collision."}
{"id": "train_06350", "split": "train", "clip_key": "titan_clip_515_000204_movie", "source": {"subset": "titan", "scenario": "clip_515", "frame": "000204"}, "frames": ["titan_clip_515_000204_movie_t-3.jpg", "titan_clip_515_000204_movie_t-2.jpg", "titan_clip_515_000204_movie_t-1.jpg", "titan_clip_515_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban residential road climbs uphill with no marked centerline, smooth pavement, and tight walls and fences at the edges; traffic is light and no oncoming vehicles appear. Ahead in the same direction, a small truck near the middle of the roadway slows or pauses, partially blocking the uphill path and setting the ego vehicle's pace. To its left, a pedestrian wearing a cap and a blue shirt walks in the middle of the road toward the left side, and may enter the ego lane as the vehicle approaches. No salient traffic signals or signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a cap and a blue shirt, walking in the middle of the road, to the left side of the road. The pedestrian could enter the vehicle's path on the left, so the driver should manoeuvre safely around them."}
{"id": "train_06351", "split": "train", "clip_key": "titan_clip_966_000048_movie", "source": {"subset": "titan", "scenario": "clip_966", "frame": "000048"}, "frames": ["titan_clip_966_000048_movie_t-3.jpg", "titan_clip_966_000048_movie_t-2.jpg", "titan_clip_966_000048_movie_t-1.jpg", "titan_clip_966_000048_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban divided arterial with two lanes in the ego direction and a planted median shows light traffic and patched but generally smooth pavement. Far ahead in the left ego lane, a brown truck is parked at the curb, remaining stationary and blocking the lane. In the adjacent right lane ahead, a dark pickup travels steadily as it overtakes the stopped truck, temporarily occupying the space the ego vehicle would use to pass. On the left sidewalk, a pedestrian walks along beside the building behind a guardrail with no movement toward the roadway.", "hazard_reasoning": "a brown truck is parked in the ego lane. Because it blocks the ego lane and limits visibility, the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_06352", "split": "train", "clip_key": "2020-0220-102630_070027_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "070027"}, "frames": ["2020-0220-102630_070027_movie_t-3.jpg", "2020-0220-102630_070027_movie_t-2.jpg", "2020-0220-102630_070027_movie_t-1.jpg", "2020-0220-102630_070027_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with three same-direction lanes runs straight past mid-rise buildings, separated from oncoming traffic by a low hedge median; the pavement is smooth and traffic is moderate and flowing steadily. Ahead slightly left, a blue hatchback is changing from the left lane into the ego lane, moving into the ego car's path and likely to slot in front. Farther ahead in the lane, a white van continues at a steady speed, poised to set the pace after the merge. In the right lane, a black SUV travels parallel a little ahead without encroaching.", "hazard_reasoning": "There is a blue hatchback lane changing in front of the ego car, from the left lane to the ego lane. The hatchback is merging directly into your lane, posing a collision risk if you maintain speed, so you should slow down."}
{"id": "train_06353", "split": "train", "clip_key": "2020-0217-110854_061644_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "061644"}, "frames": ["2020-0217-110854_061644_movie_t-3.jpg", "2020-0217-110854_061644_movie_t-2.jpg", "2020-0217-110854_061644_movie_t-1.jpg", "2020-0217-110854_061644_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of lane-changing sedan", "environment_perception": "An urban arterial runs under an elevated structure with three same-direction lanes, a right-side guardrail, and smooth pavement; traffic is moderate and flows steadily. A white sedan ahead in the ego lane moves left into the adjacent lane in front of the ego car, completing the lane change gradually and clearing the ego lane. Farther ahead in the left lane, a white van continues at a steady pace after the sedan merges, remaining in the adjacent lane. To the near left of the ego vehicle, a dark van travels alongside in the adjacent lane, maintaining parallel speed close to the ego's flank.", "hazard_reasoning": "There is a white sedan lane changing in front of the ego car, from the ego lane to the left lane. This maneuver may unexpectedly encroach on your path, so you should be prepared to adjust speed or position to avoid a collision under this situation."}
{"id": "train_06354", "split": "train", "clip_key": "2020-0213-143552_064692_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "064692"}, "frames": ["2020-0213-143552_064692_movie_t-3.jpg", "2020-0213-143552_064692_movie_t-2.jpg", "2020-0213-143552_064692_movie_t-1.jpg", "2020-0213-143552_064692_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three lanes in the ego direction and a marked right-turn bay has smooth pavement and moderate, steady traffic. Ahead in the ego lane a white box truck continues away from the camera, setting the pace. In the left lane slightly ahead, a blue hatchback proceeds straight at a similar speed without changing lanes. Ahead to the right, a dark van travels in the right-turn lane along the chevron-marked gore, keeping parallel to the ego path. Overhead lane-use signs show the two left lanes for through travel and the rightmost lane permitted for straight or right turn.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The driver should be aware of this truck ahead because its behavior could change suddenly, requiring quick response."}
{"id": "train_06355", "split": "train", "clip_key": "titan_clip_530_000234_movie", "source": {"subset": "titan", "scenario": "clip_530", "frame": "000234"}, "frames": ["titan_clip_530_000234_movie_t-3.jpg", "titan_clip_530_000234_movie_t-2.jpg", "titan_clip_530_000234_movie_t-1.jpg", "titan_clip_530_000234_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian crossing ahead", "environment_perception": "An urban two-way street with a single narrow lane each way runs between mid-rise buildings, the asphalt clean and sunlit, and traffic is light with no moving vehicles ahead. The ego vehicle proceeds in the left lane. A man wearing black pants and a gray T-shirt walks away from the ego vehicle in the middle of the road ahead, diverted there by a parked vehicle, and he occupies the ego path and constrains the pace. A circular roadside sign shows 30. Numerous vehicles are parked along both sides, including a silver van close on the left and a small truck stopped farther ahead on the left that narrows the passage, and a bicycle is parked by the right storefront.", "hazard_reasoning": "There is a man wearing black pants and a gray T-shirt, walking in the middle of the road and away from the ego car, because of the parked vehicle. The pedestrian walking in the center of the lane may suddenly change direction or obstruct your path, so you should slow down to avoid collision."}
{"id": "train_06356", "split": "train", "clip_key": "titan_clip_659_000510_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_659_000510_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_659_000510_movie_t-3_augB1.jpg", "titan_clip_659_000510_movie_t-2_augB1.jpg", "titan_clip_659_000510_movie_t-1_augB1.jpg", "titan_clip_659_000510_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban two-way street with no centerline and smooth pavement shows light traffic as the ego vehicle proceeds in the left lane toward a cross street. Ahead on the left curb, a dark box truck stands partly in the lane while unloading, with a dolly and stacked crates at its rear that narrow the passage and constrain the ego vehicle to pass to its right. Beside it on the left, a male pedestrian wearing a black shirt with white writing and brown pants unloads the truck and stands close to the roadway, so he may enter the ego lane. On the right sidewalk, another pedestrian waits by a building entrance without moving into the road. A white car sits recessed on the right, and no oncoming vehicles are visible.", "hazard_reasoning": "There is a male pedestrian, wearing a black shirt with white writing and brown pants, unloaded a truck, on the left side of the road. The pedestrian unloading the truck may step into the lane unexpectedly and is hidden by the parked vehicle, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_06357", "split": "train", "clip_key": "2020-0203-154554_036211_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "036211"}, "frames": ["2020-0203-154554_036211_movie_t-3.jpg", "2020-0203-154554_036211_movie_t-2.jpg", "2020-0203-154554_036211_movie_t-1.jpg", "2020-0203-154554_036211_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs under an elevated expressway, with smooth pavement and right-side guardrails; traffic is moderate and briefly slows. A white coach is directly ahead in the ego lane and gradually slows because traffic congestion builds in front, constraining the ego vehicle's pace. To the right, a small white flatbed truck is just ahead in the adjacent lane and moves slowly near the guardrail, keeping roughly parallel with the bus and limiting an immediate pass. On the left, a silver car travels alongside to slightly behind the ego position in its lane and continues straight without encroaching. No signals are prominent, and visibility is shaded by the viaduct.", "hazard_reasoning": "There is a white bus slowing in front of the ego car in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a potential collision due to reduced traffic speed."}
{"id": "train_06358", "split": "train", "clip_key": "2020-0203-114632_012450_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "012450"}, "frames": ["2020-0203-114632_012450_movie_t-3.jpg", "2020-0203-114632_012450_movie_t-2.jpg", "2020-0203-114632_012450_movie_t-1.jpg", "2020-0203-114632_012450_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane road approaches a signalized intersection with flexible bollards forming the center divider, guardrails on both sides, and sound pavement; traffic is light. A city bus ahead in the ego lane nears the crosswalk and slows, setting the pace for the approach. A bicyclist just ahead along the left edge of the ego lane rides toward the intersection and may drift into the ego path as the lane narrows by the bollards. A pedestrian uses the left-side crosswalk and crosses toward the ego vehicle, moving into the ego lane area at the intersection. Additional pedestrians stand on the right sidewalk near the crosswalk but remain waiting.", "hazard_reasoning": "There is a pedestrian crossing to the left side of the intersection toward the ego car via the crosswalk. The driver should stop to allow pedestrians to cross safely under the red light."}
{"id": "train_06359", "split": "train", "clip_key": "2020-0206-142535_037948_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "037948"}, "frames": ["2020-0206-142535_037948_movie_t-3.jpg", "2020-0206-142535_037948_movie_t-2.jpg", "2020-0206-142535_037948_movie_t-1.jpg", "2020-0206-142535_037948_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for crossing pedestrian", "environment_perception": "An urban two-way street with one lane in each direction is divided by a narrow median with railings; pavement is clean and dry. Traffic is light in the ego direction and moderate oncoming. Ahead at the crosswalk, a pedestrian in a brown coat and blue pants carrying a backpack crosses from left to right with a green walk signal, entering the ego lane and keeping the car stopped. Another pedestrian in a dark long coat walks slowly across in front of the vehicle, further holding the approach. To the right beyond the median, a silver car proceeds toward the camera in the oncoming lane without deviating. Along the left curb ahead, several small trucks stand stopped, narrowing the view near the intersection.", "hazard_reasoning": "There is a pedestrian wearing a brown coat, blue pants, carrying a backpack, and crossing the street at the crosswalk from the left to the right, because they have a green crossing signal. The driver should stop to avoid colliding with the pedestrian who has the right of way at the crosswalk."}
{"id": "train_06360", "split": "train", "clip_key": "titan_clip_198_000438_movie", "source": {"subset": "titan", "scenario": "clip_198", "frame": "000438"}, "frames": ["titan_clip_198_000438_movie_t-3.jpg", "titan_clip_198_000438_movie_t-2.jpg", "titan_clip_198_000438_movie_t-1.jpg", "titan_clip_198_000438_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban street with tall buildings lines a single narrow two-way road with no median and smooth pavement; traffic is light and slow. Ahead in the ego lane, a large white box truck rolls slowly and intermittently stops, constraining the ego vehicle's pace. In front of the ego, a pedestrian wearing black pants and a gray shirt crosses from the right curb to the left through the vehicle's path where there is no crosswalk. Another pedestrian just ahead of them also moves leftward across the lane slightly farther from the ego. Farther ahead beyond the truck, a small car in the same direction proceeds cautiously.", "hazard_reasoning": "There is a pedestrian wearing black pants and a gray shirt, crossing the street in front of the ego car, from the right side of the road to the left side, because there is no pedestrian crosswalk. Driver should slow down because the pedestrian is crossing unpredictably without a designated crosswalk, creating a high collision risk."}
{"id": "train_06361", "split": "train", "clip_key": "2020-0227-104226_046339_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "046339"}, "frames": ["2020-0227-104226_046339_movie_t-3.jpg", "2020-0227-104226_046339_movie_t-2.jpg", "2020-0227-104226_046339_movie_t-1.jpg", "2020-0227-104226_046339_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with multiple same-direction lanes and a solid yellow median has smooth pavement and slow, congested flow. A white truck with a brown tarp is directly ahead in the ego lane and remains stopped because congestion blocks traffic. In the adjacent curbside lane to the left, a white van inches forward alongside, restricting the ego vehicle's ability to merge. A small pickup stands stationary at the far left edge near the ego, narrowing the curb lane.", "hazard_reasoning": "There is a white truck with a brown tarp stopped in front of the ego car, because of traffic congestion ahead. The ego-vehicle must stop to avoid colliding with the halted truck and adapt to the congestion."}
{"id": "train_06362", "split": "train", "clip_key": "2020-0127-132751_103405_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "103405"}, "frames": ["2020-0127-132751_103405_movie_t-3.jpg", "2020-0127-132751_103405_movie_t-2.jpg", "2020-0127-132751_103405_movie_t-1.jpg", "2020-0127-132751_103405_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each way and a solid yellow centerline runs through a commercial area; the pavement is dry and traffic is light, with the oncoming lane mostly clear. A gray van directly ahead in the ego lane slows, reducing the ego car's pace. On the right ahead, a black car waits at a driveway on the oncoming side, staying out of the travel lane and not affecting the ego vehicle. Several pedestrians walk along the right sidewalk, including one near the curb, but they remain on the walkway and do not enter the roadway.", "hazard_reasoning": "There is a gray van slowing down in front of the ego car. Because the van is reducing speed, you should slow down to maintain a safe following distance."}
{"id": "train_06363", "split": "train", "clip_key": "2020-0227-104226_022432_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "022432"}, "frames": ["2020-0227-104226_022432_movie_t-3.jpg", "2020-0227-104226_022432_movie_t-2.jpg", "2020-0227-104226_022432_movie_t-1.jpg", "2020-0227-104226_022432_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs under an elevated expressway, with two same-direction lanes and a right-side guardrail; the pavement is dry and smooth, and traffic moves at a moderate, steady pace. A white van ahead in the ego lane drives away from the ego car at a constant speed, maintaining its lane and spacing. A blue hatchback slightly ahead to the left continues straight in the adjacent lane, parallel to the ego vehicle. Farther ahead in the left lane, a small white car proceeds straight and slowly opens its gap. Overhead blue directional signs indicate upcoming route choices, while expressway columns and a pedestrian overpass line the right side.", "hazard_reasoning": "There is a white van driving, in the ego lane, away from the ego-car. The white van ahead may brake suddenly, so the driver should follow at a safe distance."}
{"id": "train_06364", "split": "train", "clip_key": "2020-0225-102455_024339_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "024339"}, "frames": ["2020-0225-102455_024339_movie_t-3.jpg", "2020-0225-102455_024339_movie_t-2.jpg", "2020-0225-102455_024339_movie_t-1.jpg", "2020-0225-102455_024339_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped truck", "environment_perception": "An urban multi-lane arterial in a dense city center carries moderate two-way traffic on dry pavement, with painted lane lines separating directions. Ahead in the same-direction left-side lanes, a silver car continues straight at steady speed. On the left curb near the bus stop, a gray truck is stopped on the roadside. In the oncoming lanes to the right, a black sedan approaches past the crosswalk, and a white van comes behind it, both proceeding straight. Overhead traffic lights are visible at the intersection ahead.", "hazard_reasoning": "There is a gray truck stopped on the left side of the road. The stopped truck could obstruct your view and your path, so you should be aware and prepared to adjust your driving accordingly."}
{"id": "train_06365", "split": "train", "clip_key": "2020-0227-104226_026363_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "026363"}, "frames": ["2020-0227-104226_026363_movie_t-3.jpg", "2020-0227-104226_026363_movie_t-2.jpg", "2020-0227-104226_026363_movie_t-1.jpg", "2020-0227-104226_026363_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be cautious of minivan cutting into lane", "environment_perception": "An urban two-way road with one lane in each direction runs beneath an elevated expressway on the right; the asphalt looks dry and intact and traffic is light. Ahead, a black minivan in the left position merges right, cutting into the ego lane and occupying the path. On the elevated side ramp to the right, a white van ascends in the same general direction, separated by a concrete barrier and not interacting with the main road. A silver microvan travels along the ramp toward the camera, likewise isolated. No salient traffic signals are visible, though roadside no-parking signs stand on the left.", "hazard_reasoning": "There is a black minivan in the left lane, cutting in to the ego lane. This merging action may intrude into your path, so maintain awareness and prepare to adjust your position."}
{"id": "train_06366", "split": "train", "clip_key": "titan_clip_963_000456_movie", "source": {"subset": "titan", "scenario": "clip_963", "frame": "000456"}, "frames": ["titan_clip_963_000456_movie_t-3.jpg", "titan_clip_963_000456_movie_t-2.jpg", "titan_clip_963_000456_movie_t-1.jpg", "titan_clip_963_000456_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban back street with a single narrow two-way lane and no median is lined by close buildings, sidewalks, and bollards; the pavement looks smooth and motor traffic is light. The ego car proceeds straight. Ahead in the ego lane, a small teal delivery cart moves slowly away near the center, constraining the ego vehicle's pace. Farther ahead near the right edge, a bicyclist rides away along the curb in the same direction, remaining clear of the lane center. On the left side of the road, a pedestrian in black pants and a white shirt walks toward the ego car near the edge and may step into the lane.", "hazard_reasoning": "There is a pedestrian wearing blank pants and a white shirt, walking on the left side of the road, toward the ego car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should be aware of potential crossing to avoid a collision."}
{"id": "train_06367", "split": "train", "clip_key": "titan_clip_481_000468_movie", "source": {"subset": "titan", "scenario": "clip_481", "frame": "000468"}, "frames": ["titan_clip_481_000468_movie_t-3.jpg", "titan_clip_481_000468_movie_t-2.jpg", "titan_clip_481_000468_movie_t-1.jpg", "titan_clip_481_000468_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow one-lane street with no median stretches between tall buildings; the cobblestone-like pavement looks intact and traffic is very light. Ahead in the ego lane, a pedestrian wearing a white shirt and black pants walks in the middle of the road, moving diagonally toward the right curb as the left side lacks a usable sidewalk, temporarily occupying the vehicle's path. Construction materials and barriers line the left frontage near storefronts, narrowing the roadside but not the lane. No salient signals are visible, and no other moving vehicles are immediately nearby.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants in the middle of the road, crossing to the right side because there is no sidewalk on the left side of the road. The driver should slow down because the pedestrian is crossing mid-road due to lack of sidewalk, posing a collision risk."}
{"id": "train_06368", "split": "train", "clip_key": "titan_clip_279_000186_movie", "source": {"subset": "titan", "scenario": "clip_279", "frame": "000186"}, "frames": ["titan_clip_279_000186_movie_t-3.jpg", "titan_clip_279_000186_movie_t-2.jpg", "titan_clip_279_000186_movie_t-1.jpg", "titan_clip_279_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban side-street intersection opens onto a narrow two-way road, with orange cones forming a temporary center divider and smooth pavement, the oncoming side to the right; traffic is light with no moving vehicles. Ahead in the middle of the road, a pedestrian wearing a gray vest and cap walks away while signaling with an outstretched arm to control traffic, keeping the ego vehicle waiting. At the near crossing, a man from the left strides across to the right directly in front of the car, occupying the ego lane. Slightly farther ahead near the right edge, a woman in a light dress moves diagonally left across the lane under the marshal's direction. The coned channel narrows the available path.", "hazard_reasoning": "There is a pedestrian wearing a gray vest and a cap, walking in the middle of the road, away from the ego car, because they are controlling traffic. The pedestrian controlling traffic may signal you to stop and is in the roadway, so you should halt to avoid a collision."}
{"id": "train_06369", "split": "train", "clip_key": "2020-0218-103119_042347_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "042347"}, "frames": ["2020-0218-103119_042347_movie_t-3.jpg", "2020-0218-103119_042347_movie_t-2.jpg", "2020-0218-103119_042347_movie_t-1.jpg", "2020-0218-103119_042347_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban two-lane road lined with mid-rise buildings curves gently right, with clean pavement and double white lines between the lanes; traffic is heavy and slow. Directly ahead in the ego lane, a gray box van is stopped because congestion blocks the way, keeping the ego vehicle stationary. In the adjacent right lane, a larger cargo truck creeps forward alongside and slightly ahead, constraining any lane change by the ego car. A small side street opens on the left near the stopped van as the queue continues around the bend.", "hazard_reasoning": "There is a gray van stopped in front of the ego car because of traffic congestion ahead. Stop immediately to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_06370", "split": "train", "clip_key": "2020-0207-101955_017251_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "017251"}, "frames": ["2020-0207-101955_017251_movie_t-3.jpg", "2020-0207-101955_017251_movie_t-2.jpg", "2020-0207-101955_017251_movie_t-1.jpg", "2020-0207-101955_017251_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with three same-direction lanes and painted dividers approaches a signalized intersection on sound pavement, and traffic is moderate and flowing. A small white truck is directly ahead in the ego lane and accelerates straight through because the signal ahead is green, briefly setting the ego car's pace. To the right, a red SUV in the adjacent through lane advances alongside without merging. Farther ahead in that lane, a white van continues beyond the crosswalk and remains clear of the ego path. The overhead signal facing our approach stays green, and no obstacles or work zones are visible.", "hazard_reasoning": "There is a white truck moving ahead in front of the ego car in the ego lane, because the traffic light is green. The driver should follow the vehicle ahead as it indicates when the traffic signal may change, helping to anticipate when to proceed or stop."}
{"id": "train_06371", "split": "train", "clip_key": "titan_clip_1133_000276_movie", "source": {"subset": "titan", "scenario": "clip_1133", "frame": "000276"}, "frames": ["titan_clip_1133_000276_movie_t-3.jpg", "titan_clip_1133_000276_movie_t-2.jpg", "titan_clip_1133_000276_movie_t-1.jpg", "titan_clip_1133_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban, tree-lined single-lane access road runs beside a glass-fronted building, with smooth pavement and red shoulders and no visible divider; vehicular traffic appears light and unchanged through the clip. Five pedestrians walk together on the right side toward the ego car, encroaching slightly into the lane and narrowing the passage. A lone pedestrian ahead near the centerline moves away in the ego lane, slowing the approach. Another person along the left edge by the storefront walks toward the camera and could edge into the lane.", "hazard_reasoning": "There are five pedestrians walking in a group on the right side of the lane, toward the ego car. The driver should slow down to anticipate any unexpected crossing movements by the pedestrians."}
{"id": "train_06372", "split": "train", "clip_key": "2020-0217-144444_004814_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "004814"}, "frames": ["2020-0217-144444_004814_movie_t-3.jpg", "2020-0217-144444_004814_movie_t-2.jpg", "2020-0217-144444_004814_movie_t-1.jpg", "2020-0217-144444_004814_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with a curbside sidewalk and metal railing runs straight ahead; the pavement is dry and in good condition, and traffic is heavy and slow toward an intersection. A yellow sedan directly ahead in the ego lane is stopped at the red light, holding the ego vehicle. To the right, a dark minivan in the adjacent same-direction lane creeps forward with the queue, remaining slightly ahead without signaling a lane change. Farther ahead in the center lanes, a white box truck slows with traffic, shaping the pace there. On the left sidewalk, a bicyclist rides forward along the railing, separated from the roadway.", "hazard_reasoning": "There is a yellow sedan stopped in front of the ego car in the ego lane, because the light is red. Since the light is red and the vehicle ahead is halted, you must stop to maintain a safe distance and avoid a collision."}
{"id": "train_06373", "split": "train", "clip_key": "titan_clip_548_000342_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_548_000342_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_548_000342_movie_t-3_augB1.jpg", "titan_clip_548_000342_movie_t-2_augB1.jpg", "titan_clip_548_000342_movie_t-1_augB1.jpg", "titan_clip_548_000342_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban one-lane street with no median and smooth pavement shows very light vehicle traffic but many pedestrians. Two pedestrians in white T-shirts with backpacks walk away from the ego vehicle in the middle of the road ahead, occupying the travel path and effectively setting the pace. On the right near the foreground, a pedestrian walks toward the camera along the roadway edge, close to the curb as the ego approaches. At the left curb, an adult with a stroller lingers by the edge without entering the lane. Blue roadside signs on the left indicate a parking restriction, a pedestrian warning, and a rightward directional arrow.", "hazard_reasoning": "There are two pedestrians carrying backpacks, wearing white t-shirts, and walking in the middle of the road, away from the ego car. The driver should slow down because pedestrians walking unpredictably in the lane pose a collision risk."}
{"id": "train_06374", "split": "train", "clip_key": "2020-0205-103411_060778_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "060778"}, "frames": ["2020-0205-103411_060778_movie_t-3.jpg", "2020-0205-103411_060778_movie_t-2.jpg", "2020-0205-103411_060778_movie_t-1.jpg", "2020-0205-103411_060778_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three lanes in the ego direction runs between tall buildings, with a raised planted median on the right and smooth pavement; traffic is moderate and moving steadily. Ahead in the ego lane, a white van drives straight and gradually pulls away from the camera, effectively setting the ego car's pace. Slightly ahead to the left, a box truck in the adjacent lane proceeds straight at a similar speed, limiting a leftward merge. Across the median to the right, oncoming cars flow steadily on the opposite carriageway without interacting.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06375", "split": "train", "clip_key": "2020-0210-155354_004538_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "004538"}, "frames": ["2020-0210-155354_004538_movie_t-3.jpg", "2020-0210-155354_004538_movie_t-2.jpg", "2020-0210-155354_004538_movie_t-1.jpg", "2020-0210-155354_004538_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban commercial street with one narrow lane each way runs under a railway overpass, with no median and smooth pavement; traffic is slow with a short queue ahead. A white hatchback directly ahead in the ego lane is stopped, waiting at a red traffic light further ahead and constraining the ego vehicle. A black van stands at the left curb just ahead, reducing lateral clearance in the ego lane. Farther ahead near the lane center, a person pushes a small cart along the roadway in the same direction and may drift into the ego path as space narrows. Orange cones line both sides of the street, further narrowing the usable lane.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, because of red traffic lights ahead. Stop to avoid a collision with the halted vehicle at the red signal."}
{"id": "train_06376", "split": "train", "clip_key": "titan_clip_639_000594_movie", "source": {"subset": "titan", "scenario": "clip_639", "frame": "000594"}, "frames": ["titan_clip_639_000594_movie_t-3.jpg", "titan_clip_639_000594_movie_t-2.jpg", "titan_clip_639_000594_movie_t-1.jpg", "titan_clip_639_000594_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban T-junction appears at the end of a narrow single-lane side street with no median, meeting a busier perpendicular road; the pavement is clean and traffic is light on the side street and moderate on the cross street. A cyclist in black pants rides across the crosswalk ahead from left to right, using the crossing in front of the car and briefly blocking the ego path. Several pedestrians on the far side walk onto the zebra crossing while another waits near the near-right corner, occupying the intersection area. On the left by the vending machines, a scooter edges forward from a driveway toward the lane and may merge into the exit path. A prominent stop marking precedes the crosswalk, and standard traffic signals are visible at the junction.", "hazard_reasoning": "There is a cyclist wearing black pants, cycling across the street, from the left side to the right side, because there is a crosswalk in front of the ego car. The cyclist is entering the crosswalk ahead, so you should stop to avoid a collision."}
{"id": "train_06377", "split": "train", "clip_key": "titan_clip_738_000516_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_738_000516_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_738_000516_movie_t-3_augB1.jpg", "titan_clip_738_000516_movie_t-2_augB1.jpg", "titan_clip_738_000516_movie_t-1_augB1.jpg", "titan_clip_738_000516_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial side street with a single narrow lane and no divider has worn pavement and light, slow traffic near an intersection. A white sedan ahead in the same lane rolls forward cautiously, its pace constrained by pedestrians and a blue truck farther ahead. Farther up, the blue truck lingers near the intersection and narrows the available space, further slowing vehicles in the same direction. On the left side near the intersection, a man walks toward the ego vehicle, stepping inward because another pedestrian blocks his path. Shopfront displays and railings encroach on the curb, leaving a tight corridor for vehicles and people.", "hazard_reasoning": "There is a man walking on the left side of the intersection, toward the ego car, because there is another pedestrian in the way. The pedestrian could step into the vehicle's path unexpectedly, so the driver should carefully manoeuvre to avoid collision."}
{"id": "train_06378", "split": "train", "clip_key": "titan_clip_788_000174_movie", "source": {"subset": "titan", "scenario": "clip_788", "frame": "000174"}, "frames": ["titan_clip_788_000174_movie_t-3.jpg", "titan_clip_788_000174_movie_t-2.jpg", "titan_clip_788_000174_movie_t-1.jpg", "titan_clip_788_000174_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrians near crossing", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway and no median approaches a zebra crossing at a small intersection; pavement is smooth and traffic is light with no moving vehicles visible. Two pedestrians, one in black pants and another in a blue skirt, both carrying handbags, stand on the right side just beyond the intersection near the guardrail, lingering by the crosswalk where they may step toward the roadway. A white mini-truck is stationary ahead beyond the crosswalk near the left curb at the corner, creating a minor visual obstruction but not blocking the lane. Another person stands on the left sidewalk before the junction, remaining clear of the road. A no-stopping sign and a pedestrian crossing sign are posted on the left approach.", "hazard_reasoning": "There are two pedestrians, wearing black pants and a blue skirt, and carrying handbags, standing on the right side of the road after the intersection. The driver should be aware of pedestrians near the crossing because they may step into the lane unexpectedly."}
{"id": "train_06379", "split": "train", "clip_key": "2020-0131-135401_075783_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "075783"}, "frames": ["2020-0131-135401_075783_movie_t-3.jpg", "2020-0131-135401_075783_movie_t-2.jpg", "2020-0131-135401_075783_movie_t-1.jpg", "2020-0131-135401_075783_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial passes through midrise buildings; the pavement looks smooth and traffic is heavy and slow as the road approaches a right-hand split. A black sedan directly ahead in the ego lane creeps forward and halts with the queue, effectively setting the ego vehicle's pace amid congestion. A large white box truck runs alongside in the lane to the left at a similar slow speed, close to the ego vehicle. To the right, a white kei van proceeds in the right lane toward the diverging ramp while another large truck occupies the far-right lane. Overhead blue guide signs indicate directions for the upcoming split.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06380", "split": "train", "clip_key": "2020-0226-101332_040376_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "040376"}, "frames": ["2020-0226-101332_040376_movie_t-3.jpg", "2020-0226-101332_040376_movie_t-2.jpg", "2020-0226-101332_040376_movie_t-1.jpg", "2020-0226-101332_040376_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multi-lane arterial runs through a dense business district, with a fenced median separating opposite traffic on the right; the pavement looks smooth and traffic is moderate. A white van just ahead moves from the left lane into the ego lane, completing a lane change in front of the ego car and setting the pace. Farther ahead, another small white van continues straight in the same direction, maintaining a steady gap. On the near left, a large box truck proceeds alongside in its lane, reducing lateral space but keeping parallel to the ego vehicle.", "hazard_reasoning": "There is a white van lane changing in front of the ego car, from the left lane to the ego lane. Slow down to maintain a safe distance as it merges into your lane."}
{"id": "train_06381", "split": "train", "clip_key": "titan_clip_839_000108_movie", "source": {"subset": "titan", "scenario": "clip_839", "frame": "000108"}, "frames": ["titan_clip_839_000108_movie_t-3.jpg", "titan_clip_839_000108_movie_t-2.jpg", "titan_clip_839_000108_movie_t-1.jpg", "titan_clip_839_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of pedestrian directing traffic", "environment_perception": "An urban two-way street with one lane each direction and no median runs past a work zone; the asphalt looks smooth and traffic is light and slow near the crosswalk. Ahead on the left at the zebra crossing, a worker in a blue shirt holding a red baton stands in the roadway and actively directs traffic, controlling the ego vehicle's passage. A white construction truck is parked just beyond him on the left within orange cones, partially narrowing the ego lane and marking the work area with stacked pipes and an extended crane. Two additional workers remain on the left sidewalk beside the materials. A pedestrian signal above the crossing shows a green walking figure.", "hazard_reasoning": "There is a pedestrian standing on the left side of the road, wearing a blue shirt and holding a red baton, directing traffic. The pedestrian's position and actions indicate they may step into the vehicle's path unexpectedly, so the driver should be prepared to slow down or stop."}
{"id": "train_06382", "split": "train", "clip_key": "titan_clip_798_000408_movie", "source": {"subset": "titan", "scenario": "clip_798", "frame": "000408"}, "frames": ["titan_clip_798_000408_movie_t-3.jpg", "titan_clip_798_000408_movie_t-2.jpg", "titan_clip_798_000408_movie_t-1.jpg", "titan_clip_798_000408_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban narrow two-way street with a single lane in each direction and no marked centerline is ahead; the pavement looks smooth and dry, and traffic is very light with no moving vehicles ahead or oncoming. A pedestrian wearing a white helmet stands on the left by the curb beside a parked scooter, stationary near the lane edge and not entering the roadway. A row of flexible delineator posts runs along the center line, and a roadside convex safety mirror is mounted on the right near a side alley.", "hazard_reasoning": "There is a pedestrian wearing a white helmet and standing on the left side of the road. The pedestrian could step into the driving path unexpectedly, so the driver should manoeuvre carefully around them to maintain safety."}
{"id": "train_06383", "split": "train", "clip_key": "2020-0213-143552_039390_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "039390"}, "frames": ["2020-0213-143552_039390_movie_t-3.jpg", "2020-0213-143552_039390_movie_t-2.jpg", "2020-0213-143552_039390_movie_t-1.jpg", "2020-0213-143552_039390_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane approach to a signalized intersection runs beneath an elevated expressway, with smooth pavement and light traffic. The ego vehicle proceeds in the left-side through lane. A white box truck ahead in the ego lane moves straight through the junction and pulls away on the green light, effectively setting the ego car's pace. On the left sidewalk by the crosswalk, a person walking a bicycle waits at the curb and could enter the crossing when allowed. A dark car at the far left side street remains stopped at the corner and does not enter the main roadway. The traffic signal facing the ego direction shows green.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because of a green traffic light. Follow the vehicle ahead to maintain a safe distance and anticipate its movements under the green signal."}
{"id": "train_06384", "split": "train", "clip_key": "2020-0225-102455_084274_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "084274"}, "frames": ["2020-0225-102455_084274_movie_t-3.jpg", "2020-0225-102455_084274_movie_t-2.jpg", "2020-0225-102455_084274_movie_t-1.jpg", "2020-0225-102455_084274_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with smooth pavement carries moderate same-direction traffic and no visible median. Ahead in the ego lane, a black van indicates and moves into the left lane. To the right, a large box truck runs slightly ahead in the adjacent lane at a steady pace, limiting right-side space. Farther ahead, several cars in the left and center lanes proceed toward the next junction and collectively set the flow. Overhead blue direction signs span the road.", "hazard_reasoning": "There is a black van in front of the ego car in the ego lane, changing to the left lane. The van's lane change into the ego vehicle's path could reduce spacing, so slow down to maintain a safe buffer."}
{"id": "train_06385", "split": "train", "clip_key": "2020-0220-102630_039721_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "039721"}, "frames": ["2020-0220-102630_039721_movie_t-3.jpg", "2020-0220-102630_039721_movie_t-2.jpg", "2020-0220-102630_039721_movie_t-1.jpg", "2020-0220-102630_039721_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane same-direction road approaches a signalized intersection beside an elevated railway, with smooth pavement, no median, and moderate slow-moving traffic. A black van directly ahead in the ego lane is stopped for the red light, holding the ego vehicle in place. A covered flatbed truck ahead to the left waits in the adjacent lane near the stop line, aligned to continue straight once the signal changes. A black sedan in the left lane stands slightly alongside to the left, also waiting at the light without affecting the ego vehicle's path.", "hazard_reasoning": "There is a black van stopped in the ego lane, because of the red traffic light. As the van ahead is stopped at a red light in your lane, you must stop to avoid a collision."}
{"id": "train_06386", "split": "train", "clip_key": "titan_clip_990_000474_movie", "source": {"subset": "titan", "scenario": "clip_990", "frame": "000474"}, "frames": ["titan_clip_990_000474_movie_t-3.jpg", "titan_clip_990_000474_movie_t-2.jpg", "titan_clip_990_000474_movie_t-1.jpg", "titan_clip_990_000474_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic controller", "environment_perception": "A narrow urban two-way street with one lane each direction and smooth pavement shows light traffic, and the oncoming lane remains clear as the scene approaches a short work area. On the left near the ego lane, a pedestrian wearing a helmet stands by traffic cones controlling the traffic, positioned to manage vehicles passing the work zone and potentially regulating the ego car's pace. Ahead in the ego lane, a pedestrian crosses midblock from right to left, briefly occupying the path and constraining progress. Farther ahead, a small white van continues straight in the same direction and moves away. A large green truck is stopped on the left beside cones, narrowing the lane, and additional cones and a temporary barrier line the right curb.", "hazard_reasoning": "There is a pedestrian wearing a helmet, standing on the left side of the road, because they are controlling the traffic. The pedestrian may give unexpected signals or step into the lane, so the driver should exercise caution to respond appropriately."}
{"id": "train_06387", "split": "train", "clip_key": "titan_clip_441_000150_movie", "source": {"subset": "titan", "scenario": "clip_441", "frame": "000150"}, "frames": ["titan_clip_441_000150_movie_t-3.jpg", "titan_clip_441_000150_movie_t-2.jpg", "titan_clip_441_000150_movie_t-1.jpg", "titan_clip_441_000150_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian crossing", "environment_perception": "An urban commercial street with a narrow brick-paved carriageway and no marked centerline is shown, with light, slow traffic and no dividers or medians. Parked vehicles and shop signs line the left side, tightening the usable lane. A pedestrian wearing a white shirt crosses directly in front of the ego vehicle from right to left, and the ego yields. Farther ahead, another pedestrian steps off the left sidewalk and continues rightward across the roadway through the ego path, keeping the pace cautious. No traffic signals are visible at this crossing.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, crossing the street in front of the ego car, from the right side to the left side. The driver should be cautious and slow down because the pedestrian is walking across the vehicle's path, posing a collision risk."}
{"id": "train_06388", "split": "train", "clip_key": "2020-0217-110854_020758_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-110854_020758_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-110854_020758_movie_t-3_augB1.jpg", "2020-0217-110854_020758_movie_t-2_augB1.jpg", "2020-0217-110854_020758_movie_t-1_augB1.jpg", "2020-0217-110854_020758_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between tall buildings, divided from oncoming traffic by a raised median fence; pavement is smooth and overall flow is slow and dense near a signalized intersection ahead. A black motorcycle directly ahead in the ego lane slows because of congestion and thus sets the ego vehicle's pace. A white mini-van immediately in front of it in the same lane also decelerates toward the crosswalk, reinforcing the slowdown. A dark van in the right lane creeps forward alongside, limiting opportunities to change lanes.", "hazard_reasoning": "There is a black motorcycle slowing in the ego-car lane, because of traffic congestion ahead. The motorcycle's reduced speed increases the risk of rear-end collision, so the driver should slow down to maintain a safe following distance."}
{"id": "train_06389", "split": "train", "clip_key": "titan_clip_493_000048_movie", "source": {"subset": "titan", "scenario": "clip_493", "frame": "000048"}, "frames": ["titan_clip_493_000048_movie_t-3.jpg", "titan_clip_493_000048_movie_t-2.jpg", "titan_clip_493_000048_movie_t-1.jpg", "titan_clip_493_000048_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead.", "environment_perception": "A quiet urban residential street with a single narrow undivided lane runs between low-rise buildings, lined by green safety bollards; the pavement is smooth and there is no vehicular traffic. A pedestrian ahead on the right edge walks toward the ego car along the curb and may drift near the travel lane. Another pedestrian ahead on the left sidewalk walks away in the same direction and remains behind the bollards. No notable signals or signs are visible, and no other obstacles appear.", "hazard_reasoning": "There is a pedestrian walking on the right side of the road, toward the ego car. The pedestrian's approach into the vehicle's path could require sudden maneuvering, so the driver should be aware to avoid collision."}
{"id": "train_06390", "split": "train", "clip_key": "2020-0227-104226_105035_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "105035"}, "frames": ["2020-0227-104226_105035_movie_t-3.jpg", "2020-0227-104226_105035_movie_t-2.jpg", "2020-0227-104226_105035_movie_t-1.jpg", "2020-0227-104226_105035_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and smooth asphalt approaches a wide intersection with no physical median visible; traffic is moderate. A white box truck ahead in the ego lane drives away from the camera, moving steadily through the junction and setting the ego vehicle's pace. To the right, a white SUV in the adjacent lane cruises slightly ahead at a similar speed, remaining in its lane. In the left lane ahead, a small hatchback continues straight across the intersection without encroaching on the ego lane. A pedestrian overpass spans the road above the junction, and buildings line both sides.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. Drivers should follow the vehicle ahead to maintain a safe distance and be prepared for any sudden deceleration under this situation."}
{"id": "train_06391", "split": "train", "clip_key": "titan_clip_158_000210_movie", "source": {"subset": "titan", "scenario": "clip_158", "frame": "000210"}, "frames": ["titan_clip_158_000210_movie_t-3.jpg", "titan_clip_158_000210_movie_t-2.jpg", "titan_clip_158_000210_movie_t-1.jpg", "titan_clip_158_000210_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully", "environment_perception": "A narrow urban shopping street with a single shared lane and no center divider is shown; the pavement is dry and traffic flow is light, dominated by pedestrians. There is a blue van parked on the left side of the road, tightening the available lane and partly blocking forward view. Ahead in the middle of the lane, a pedestrian walks away from the camera, occupying the ego path and dictating a slow approach. On the right edge near stacked crates, another pedestrian moves along the curb and intermittently steps toward the lane, potentially entering the path. Shop displays and crates spill into the roadway, further narrowing clearance.", "hazard_reasoning": "There is a blue van parked on the left side of the road. The parked van reduces the available road space, so the driver should manoeuvre carefully to avoid a collision."}
{"id": "train_06392", "split": "train", "clip_key": "2020-0225-145150_044813_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "044813"}, "frames": ["2020-0225-145150_044813_movie_t-3.jpg", "2020-0225-145150_044813_movie_t-2.jpg", "2020-0225-145150_044813_movie_t-1.jpg", "2020-0225-145150_044813_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with dry, smooth pavement carries heavy same-direction traffic, and vehicles queue without a visible median amid midrise buildings. Directly ahead in the ego lane, a small blue truck is stopped at a red traffic light, holding the ego car. Slightly farther ahead in the adjacent middle lane, a tall white box truck is also stopped, forming the front of the queue and obscuring the view of the junction. To the left, a silver delivery truck alongside slows to a halt in its lane, preventing an easy lane change. Overhead gantries and signs span the street, and a fenced sidewalk lines the right side.", "hazard_reasoning": "There is a blue truck stopped in front of the ego car, because of a red traffic light. The driver should stop immediately to avoid colliding with the halted blue truck at the intersection."}
{"id": "train_06393", "split": "train", "clip_key": "2020-0127-132751_007786_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "007786"}, "frames": ["2020-0127-132751_007786_movie_t-3.jpg", "2020-0127-132751_007786_movie_t-2.jpg", "2020-0127-132751_007786_movie_t-1.jpg", "2020-0127-132751_007786_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with side barriers runs between midrise buildings; the pavement is dry with a red-painted left lane, and traffic is heavy and slow. Directly ahead in the ego lane, a brown dump truck is stopped by congestion and holds the ego vehicle at a standstill. In the adjacent left lane, a white van slightly ahead creeps forward with the queue, limiting space for the ego car to change lanes. On the right, a black taxi close to the ego car inches forward in its lane, advancing alongside the truck and narrowing the available gap.", "hazard_reasoning": "There is a brown truck stopped in front of the ego car, in the ego lane, because of traffic congestion. The driver must stop to avoid colliding with the halted vehicle ahead."}
{"id": "train_06394", "split": "train", "clip_key": "2020-0127-132751_043448_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "043448"}, "frames": ["2020-0127-132751_043448_movie_t-3.jpg", "2020-0127-132751_043448_movie_t-2.jpg", "2020-0127-132751_043448_movie_t-1.jpg", "2020-0127-132751_043448_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes runs past mid-rise buildings, with a narrow raised median on the right separating oncoming traffic; the pavement is dry and intact, and traffic is heavy and slow. A gray sedan is stopped directly ahead in the ego lane because of congestion and blocks the path. In the adjacent left lane, a white van alongside is also stopped, preventing an easy merge. Farther ahead in our lane, a blue truck queues and inches forward, keeping the line compressed. On the far side of the median, occasional oncoming cars pass independently.", "hazard_reasoning": "There is a gray sedan stopped in the ego lane, because of the traffic congestion ahead, in front of the ego car. The driver should stop to avoid a collision with the halted vehicle."}
{"id": "train_06395", "split": "train", "clip_key": "titan_clip_1325_000222_movie", "source": {"subset": "titan", "scenario": "clip_1325", "frame": "000222"}, "frames": ["titan_clip_1325_000222_movie_t-3.jpg", "titan_clip_1325_000222_movie_t-2.jpg", "titan_clip_1325_000222_movie_t-1.jpg", "titan_clip_1325_000222_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrians approaching on left side", "environment_perception": "An urban backstreet with a narrow two-way lane and no center divider runs between tall buildings; the asphalt looks smooth and traffic is light with only a distant van ahead. On the left edge near the curb, two pedestrians in white shirts and black pants walk toward the ego vehicle, staying along the side yet close to the travel lane. Far ahead in the same lane, a white van moves away slowly, mildly governing the ego car's pace. On the right, a person near a recessed parking bay walks along the sidewalk and may approach the driveway while several vehicles remain parked inside.", "hazard_reasoning": "There are two pedestrians wearing white shirts and black pants, and walking towards the ego car, on the left side of the road. The driver should be aware of these pedestrians as they may step into the vehicle's path, requiring timely speed adjustment."}
{"id": "train_06396", "split": "train", "clip_key": "2020-0205-103411_113131_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "113131"}, "frames": ["2020-0205-103411_113131_movie_t-3.jpg", "2020-0205-103411_113131_movie_t-2.jpg", "2020-0205-103411_113131_movie_t-1.jpg", "2020-0205-103411_113131_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes per direction runs straight on dry asphalt, divided by a low raised median; traffic is moderate and moves steadily. A white van ahead in the ego lane pulls away as the stream advances, increasing its distance from the camera. A dark minivan just ahead-left in the same lane holds a steady speed, keeping the ego vehicle's pace in check. In the opposite direction to the right, a silver minivan and several cars approach along the oncoming lanes across the median, continuing straight without interaction. Cones line the right shoulder but do not intrude into the lane.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car, because traffic is moving ahead. The driver should follow the vehicle ahead to maintain safe distance and be prepared for sudden braking."}
{"id": "train_06397", "split": "train", "clip_key": "2020-0214-102601_047378_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "047378"}, "frames": ["2020-0214-102601_047378_movie_t-3.jpg", "2020-0214-102601_047378_movie_t-2.jpg", "2020-0214-102601_047378_movie_t-1.jpg", "2020-0214-102601_047378_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway ramp runs as a single lane through a covered section with a concrete wall on the left and a guardrail and noise barrier on the right; the pavement is dry and smooth, and traffic is light as the lane curves gently right toward daylight. A small white van ahead in the ego lane moves steadily and effectively sets the ego vehicle's pace. Farther ahead, a box truck and another car in the same lane continue toward the opening, maintaining gaps that create a short line the ego follows. An overhead sign is visible near the end of the covered section. The ramp has narrow shoulders and close barriers, with no opposing traffic.", "hazard_reasoning": "There are no apparent hazards in this scenario, so no warning is necessary."}
{"id": "train_06398", "split": "train", "clip_key": "2020-0227-104226_042274_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "042274"}, "frames": ["2020-0227-104226_042274_movie_t-3.jpg", "2020-0227-104226_042274_movie_t-2.jpg", "2020-0227-104226_042274_movie_t-1.jpg", "2020-0227-104226_042274_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with a solid yellow centerline and smooth pavement runs beneath a pedestrian footbridge; it has one through lane in the ego direction plus a narrow curbside lane, and traffic is heavy with a slow queue ahead. A white hatchback directly ahead in the ego lane slows because of the congestion, setting the pace for the ego vehicle. On the left, a small white flatbed truck travels slowly along the curbside lane slightly ahead, hugging the line and reducing lateral clearance. To the right of the centerline, oncoming traffic including two white sedans approaches in adjacent lanes, remaining separated from the ego lane.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car in the ego lane, because of the traffic congestion ahead. The driver should reduce speed to maintain a safe following distance and avoid collision due to the congestion ahead."}
{"id": "train_06399", "split": "train", "clip_key": "2020-0225-102455_040336_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "040336"}, "frames": ["2020-0225-102455_040336_movie_t-3.jpg", "2020-0225-102455_040336_movie_t-2.jpg", "2020-0225-102455_040336_movie_t-1.jpg", "2020-0225-102455_040336_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision with stopped truck", "environment_perception": "An urban street with wet pavement carries two-way traffic; the ego travels in the left-side carriageway on a single through lane beside a painted island forming a right-turn lane, while a shrub median separates opposing lanes. Traffic is heavy and slow. Directly ahead, a white box truck has stopped in the ego lane due to congestion ahead, holding the ego car in place. To the right beyond the median, an oncoming white sedan moves toward the camera in the opposite lanes and continues past without interaction. Farther ahead near a junction, another truck is visible beyond the pedestrian overpass but does not affect the ego path.", "hazard_reasoning": "A white truck has stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop immediately to avoid collision with the halted truck."}
{"id": "train_06400", "split": "train", "clip_key": "titan_clip_890_000444_movie", "source": {"subset": "titan", "scenario": "clip_890", "frame": "000444"}, "frames": ["titan_clip_890_000444_movie_t-3.jpg", "titan_clip_890_000444_movie_t-2.jpg", "titan_clip_890_000444_movie_t-1.jpg", "titan_clip_890_000444_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban side street with a single two-way lane and no centerline runs between close storefronts; the pavement looks smooth and traffic is light as the road leads toward a small cross street ahead. Far ahead in the ego path, a small white truck continues toward the junction, modestly setting the pace. On the right side, a pedestrian wearing a white shirt and carrying luggage stands at the curb near a building, close to the travel path. A blue no-parking sign is posted on the left. Parked scooters and a motorcycle line the right edge, and a bicycle and shop carts sit near the lane on the left, with these encroachments narrowing the passage without blocking it.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a luggage, standing on the right side of the road. The driver should manoeuvre carefully around this pedestrian since the narrow alley and parked objects limit available space and visibility."}
{"id": "train_06401", "split": "train", "clip_key": "titan_clip_519_000102_movie", "source": {"subset": "titan", "scenario": "clip_519", "frame": "000102"}, "frames": ["titan_clip_519_000102_movie_t-3.jpg", "titan_clip_519_000102_movie_t-2.jpg", "titan_clip_519_000102_movie_t-1.jpg", "titan_clip_519_000102_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street runs between low-rise buildings, with a single mixed-traffic lane, no center line, smooth asphalt, and light flow. On the right side ahead, a woman wearing a black dress walks toward the ego vehicle along the road edge, close enough that she may step into the lane. Farther ahead near the center-left, a pedestrian in light clothing walks away in the same direction, keeping to the left side and slightly reducing usable lane width. A black sedan is parked in a right-side driveway with its nose near the street, reducing clearance on that side. A small cross street appears ahead with no visible signal.", "hazard_reasoning": "There is a woman wearing a black dress and walking on the right side of the road, toward the ego car. The driver should slow down to avoid a collision since the pedestrian is approaching the vehicle's path."}
{"id": "train_06402", "split": "train", "clip_key": "titan_clip_1371_000438_movie", "source": {"subset": "titan", "scenario": "clip_1371", "frame": "000438"}, "frames": ["titan_clip_1371_000438_movie_t-3.jpg", "titan_clip_1371_000438_movie_t-2.jpg", "titan_clip_1371_000438_movie_t-1.jpg", "titan_clip_1371_000438_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street rises gently with one lane in the ego direction, no median, smooth pavement, and light traffic. The ego approaches a zebra crossing at an unsignalized intersection. A pedestrian ahead on the right steps into the crosswalk and moves left across the ego lane, constraining the approach. Another pedestrian waits near the left curb by the same crosswalk and may enter after the first crosses. A third pedestrian walks along the right sidewalk away from the camera and stays off the road. A white truck is parked on the left shoulder near the camera, and a work truck with barricades lines the right shoulder farther ahead, narrowing the roadside but not blocking the lane.", "hazard_reasoning": "There are no immediate hazards present in the scene, so the driver can maintain normal driving without additional warnings."}
{"id": "train_06403", "split": "train", "clip_key": "2020-0205-152530_055154_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "055154"}, "frames": ["2020-0205-152530_055154_movie_t-3.jpg", "2020-0205-152530_055154_movie_t-2.jpg", "2020-0205-152530_055154_movie_t-1.jpg", "2020-0205-152530_055154_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of its upcoming lane change", "environment_perception": "An urban three-lane one-way road runs beneath elevated expressways, bordered by a curb and railing on the left and a fence on the right; the dry pavement looks smooth and traffic moves at a moderate, steady flow. Ahead in the ego lane, a white sedan flashes a left turn signal and continues straight, occupying the ego vehicle's path. In the adjacent right lane slightly ahead, a white minivan proceeds straight and gradually pulls ahead without drifting toward the ego lane. Farther ahead to the right, a box truck cruises in its lane and maintains distance from surrounding cars. No other salient signals or hazards are visible.", "hazard_reasoning": "There is a white sedan in the ego lane, flashing a left turn signal. The flashing signal indicates the vehicle may merge into your lane, so you should maintain awareness to anticipate its lane change."}
{"id": "train_06404", "split": "train", "clip_key": "titan_clip_115_000150_movie", "source": {"subset": "titan", "scenario": "clip_115", "frame": "000150"}, "frames": ["titan_clip_115_000150_movie_t-3.jpg", "titan_clip_115_000150_movie_t-2.jpg", "titan_clip_115_000150_movie_t-1.jpg", "titan_clip_115_000150_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrians", "environment_perception": "An urban street lined with mid-rise buildings forms a narrow two-way road with no median, the ego traveling in the left lane on smooth pavement with light traffic. A small car ahead in the same direction proceeds steadily up the street. Two pedestrians, both wearing white shirts and black pants, cross from the right curb to the left directly in front of the ego path, occupying the lane as they pass. Another pedestrian walks along the right sidewalk near a cafe, staying by the curb. Bicycles are parked along the right curb, and a sidewalk signboard and some cones by a garage entrance sit near the edges but outside the travel lane.", "hazard_reasoning": "There are two pedestrians, both wearing black pants and a white shirt, crossing the street in front of the ego car, from the right side of the street to the left side. The driver should yield to the pedestrians crossing ahead to avoid a collision."}
{"id": "train_06405", "split": "train", "clip_key": "titan_clip_1182_000510_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1182_000510_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1182_000510_movie_t-3_augB1.jpg", "titan_clip_1182_000510_movie_t-2_augB1.jpg", "titan_clip_1182_000510_movie_t-1_augB1.jpg", "titan_clip_1182_000510_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban backstreet with no median and worn asphalt shows light vehicle flow but heavy pedestrian activity, and the lane feels constrained by roadside shops. In the middle ahead, a pedestrian wearing a white T-shirt walks toward the ego car along the center of the road, directly in the ego path and likely to slow its approach. Slightly left ahead, two people cross diagonally to the right at walking pace, continuing across the ego lane and constraining space. On the right ahead near the curb, a woman stands close to the roadway beside a building entrance and could step into the path. A red-and-white scooter is parked along the right edge and bicycles with cones line the left, further narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt and walking in the middle of the road, toward the ego car. The pedestrian's path crosses the vehicle's trajectory, so the driver must carefully manoeuvre to avoid a collision."}
{"id": "train_06406", "split": "train", "clip_key": "2020-0205-103411_044797_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "044797"}, "frames": ["2020-0205-103411_044797_movie_t-3.jpg", "2020-0205-103411_044797_movie_t-2.jpg", "2020-0205-103411_044797_movie_t-1.jpg", "2020-0205-103411_044797_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to stopped vehicle", "environment_perception": "An urban multi-lane arterial runs under elevated expressways, with a metal fence median separating oncoming lanes; the pavement is dry and traffic is heavy, bunching at an intersection. A black hatchback directly ahead in the ego lane is stopped at the red light, holding the ego-car as described. In the adjacent lane to the left, a dark sedan slows and queues alongside, limiting any lane change. To the right beyond the fence, oncoming cars and vans move through the junction without stopping. Overhead traffic signals show red for the ego direction.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego-car, in the ego lane, because of the flashing red traffic light ahead at the intersection. The hatchback is halted at a red signal, requiring you to yield to it to prevent a rear-end collision."}
{"id": "train_06407", "split": "train", "clip_key": "2020-0228-150133_051615_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "051615"}, "frames": ["2020-0228-150133_051615_movie_t-3.jpg", "2020-0228-150133_051615_movie_t-2.jpg", "2020-0228-150133_051615_movie_t-1.jpg", "2020-0228-150133_051615_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection, with directions separated by a raised island and guardrails; the pavement looks worn but dry, and traffic is heavy and slow. Flow bunches toward the stop line with minimal gaps. A gray sedan directly ahead in the ego lane slows due to congestion and sets the pace for the ego vehicle. Slightly ahead to the left, a small white van also decelerates in the same direction and may edge toward the ego lane as space compresses. In the adjacent right lanes, a white SUV and other cars creep forward in parallel, remaining in their lanes but contributing to the queue. On the far right beyond the median, oncoming traffic passes the junction at a steady, moderate rate. Traffic lights are visible above the intersection without a clearly readable aspect.", "hazard_reasoning": "There is a gray sedan slowing in the ego lane because of traffic congestion ahead on the road. Drivers should follow the vehicle ahead at a safe distance to adjust speed smoothly and prevent rear-end collisions."}
{"id": "train_06408", "split": "train", "clip_key": "2020-0213-143552_000462_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "000462"}, "frames": ["2020-0213-143552_000462_movie_t-3.jpg", "2020-0213-143552_000462_movie_t-2.jpg", "2020-0213-143552_000462_movie_t-1.jpg", "2020-0213-143552_000462_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction is divided from oncoming lanes by a metal median, the pavement is clean, and traffic moves at a moderate steady flow. A white compact hatchback directly ahead in the ego lane pulls away under a green signal, opening a small gap. Two motorcycles in the adjacent right same-direction lane accelerate through the junction ahead of the ego vehicle. Farther ahead, a red box truck in the ego lane continues straight and sets the pace for following traffic. Oncoming vehicles travel separately to the right beyond the median, and no obstacles or work zones are apparent.", "hazard_reasoning": "There is a white compact hatchback driving away from the ego car, in the ego lane in front of the ego car, because of the green traffic light. Follow the vehicle ahead to maintain safe distance and proceed safely."}
{"id": "train_06409", "split": "train", "clip_key": "titan_clip_1070_000156_movie", "source": {"subset": "titan", "scenario": "clip_1070", "frame": "000156"}, "frames": ["titan_clip_1070_000156_movie_t-3.jpg", "titan_clip_1070_000156_movie_t-2.jpg", "titan_clip_1070_000156_movie_t-1.jpg", "titan_clip_1070_000156_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead.", "environment_perception": "An urban residential street with a very narrow two-way carriageway lacking a centerline curves gently left, bordered by apartments on the left and a fence with dense shrubs on the right; the pavement appears smooth and traffic is light with no moving vehicles. Two pedestrians on the right verge, one close to the camera and another farther ahead, walk toward the ego vehicle along the right side and may step into the travel line, constraining pace. A parked vehicle sits at the left curb near the camera, leaving limited width. Overhanging trees and the bend ahead create partial sight restriction.", "hazard_reasoning": "There are two pedestrians wearing black pants and a white t-shirt, walking along the right side of the road, toward the ego car. The pedestrians are walking toward the vehicle on the right side, so the driver should be aware of pedestrians ahead."}
{"id": "train_06410", "split": "train", "clip_key": "titan_clip_781_000840_movie", "source": {"subset": "titan", "scenario": "clip_781", "frame": "000840"}, "frames": ["titan_clip_781_000840_movie_t-3.jpg", "titan_clip_781_000840_movie_t-2.jpg", "titan_clip_781_000840_movie_t-1.jpg", "titan_clip_781_000840_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down due to pedestrian in roadway", "environment_perception": "An urban commercial street with a single narrow lane and no median is shown, the pavement dry and slightly worn, with light vehicular flow but many pedestrians. On the left close to the ego lane, a pedestrian wearing a striped shirt walks away from the camera in the roadway because yellow cones block the sidewalk, so they may affect the lane margin. Ahead near the right, another pedestrian steps out from beside a parked van and proceeds along the cones toward the center, possibly entering the ego path. A silver van is stopped at the right curb with its rear hatch open and cones and cargo around it, a worker seated at the rear, narrowing the usable lane. Far ahead, small groups of pedestrians move along and across the street, setting the pace.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt and walking on the left side of the road, away from the ego car, because there are yellow cones in the sidewalk. The pedestrian is walking on the road due to cones blocking the sidewalk, posing a risk of entering the vehicle's path, so the driver should slow down."}
{"id": "train_06411", "split": "train", "clip_key": "2020-0203-154554_057425_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "057425"}, "frames": ["2020-0203-154554_057425_movie_t-3.jpg", "2020-0203-154554_057425_movie_t-2.jpg", "2020-0203-154554_057425_movie_t-1.jpg", "2020-0203-154554_057425_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban four-lane boulevard with a painted chevron median and dry, smooth pavement carries light to moderate traffic in steady flow. A gray van ahead in the ego left lane slows and comes to a brief stop because congestion forms ahead, directly constraining the ego car's pace. A small car farther ahead in the adjacent right lane continues straight at a steady speed alongside, remaining in its lane. Oncoming vehicles move steadily in the opposite two lanes beyond the median.", "hazard_reasoning": "There is a gray van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid a rear-end collision with the stationary van ahead."}
{"id": "train_06412", "split": "train", "clip_key": "2020-0203-114632_013472_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "013472"}, "frames": ["2020-0203-114632_013472_movie_t-3.jpg", "2020-0203-114632_013472_movie_t-2.jpg", "2020-0203-114632_013472_movie_t-1.jpg", "2020-0203-114632_013472_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban two-way street with one lane in each direction and no median extends ahead on smooth asphalt, with light to moderate flow. A large oncoming truck passes close on the right while staying in its lane, briefly reducing lateral clearance. Ahead on the left curb in the ego lane, a white van is parked for unloading, stationary and partially blocking the path, which constrains the ego vehicle's line. Pedestrians walk along the left sidewalk behind a railing, moving in the same direction without entering the roadway. A pavement marking shows 30.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane, because it is being unloaded. The van blocks part of the ego lane, so the driver must manoeuvre carefully around it to maintain safe passage."}
{"id": "train_06413", "split": "train", "clip_key": "titan_clip_1141_000528_movie", "source": {"subset": "titan", "scenario": "clip_1141", "frame": "000528"}, "frames": ["titan_clip_1141_000528_movie_t-3.jpg", "titan_clip_1141_000528_movie_t-2.jpg", "titan_clip_1141_000528_movie_t-1.jpg", "titan_clip_1141_000528_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist ahead", "environment_perception": "An urban residential street carries the ego vehicle along a narrow two-way carriageway with no centerline and smooth pavement; traffic is light with no physical median. A cyclist in a white shirt approaches on the right side of the road, riding toward the ego along the opposing curb and likely to pass close because there is no marked bicycle lane. Two pedestrians are on the near right, walking away along the road edge beside scaffolding, and their proximity to the carriageway constrains the ego's pace. Another pedestrian farther ahead on the right walks away along the edge, remaining clear of the lane. A wrapped parked car sits on the left near a driveway while building construction lines the right side.", "hazard_reasoning": "There is a cyclist wearing a white shirt, cycling on the right side of the road, toward the ego car, because there is no bicycle lane. The driver should be aware because the cyclist's close proximity and lack of a dedicated lane increases collision risk."}
{"id": "train_06414", "split": "train", "clip_key": "2020-0226-101332_076442_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "076442"}, "frames": ["2020-0226-101332_076442_movie_t-3.jpg", "2020-0226-101332_076442_movie_t-2.jpg", "2020-0226-101332_076442_movie_t-1.jpg", "2020-0226-101332_076442_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes and smooth asphalt runs between office buildings, with no center divider visible. Traffic is heavy and slow, queuing at an intersection. A dark sedan directly ahead in the ego lane is stopped with brake lights on because vehicles are stacked ahead. To the left, a white van in the adjacent lane slows toward the same queue, keeping pace with the ego vehicle. In the right lane, another sedan waits slightly ahead, limiting any rightward merge. An overhead traffic signal shows red above the lanes, maintaining the stop.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop now to avoid colliding with the stationary vehicle ahead."}
{"id": "train_06415", "split": "train", "clip_key": "titan_clip_1202_000114_movie", "source": {"subset": "titan", "scenario": "clip_1202", "frame": "000114"}, "frames": ["titan_clip_1202_000114_movie_t-3.jpg", "titan_clip_1202_000114_movie_t-2.jpg", "titan_clip_1202_000114_movie_t-1.jpg", "titan_clip_1202_000114_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "The scene is an urban residential street, a narrow two-way road with no median and smooth pavement, and traffic is light. A cyclist in a white T-shirt rides ahead near the right side of the ego lane, moving slowly and setting the pace as the car approaches. A pedestrian walks along the right sidewalk beside a small park and railing, remaining off the roadway. Parked bicycles and a metal fence line the right edge, reducing lateral clearance. A prominent yellow roadside sign warns of children.", "hazard_reasoning": "There is a cyclist wearing a white t-shirt, in front of the ego car, on the right side of the lane. The cyclist is positioned close to the vehicle's path, so the driver should slow down to maintain a safe distance."}
{"id": "train_06416", "split": "train", "clip_key": "2020-0210-101957_086257_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "086257"}, "frames": ["2020-0210-101957_086257_movie_t-3.jpg", "2020-0210-101957_086257_movie_t-2.jpg", "2020-0210-101957_086257_movie_t-1.jpg", "2020-0210-101957_086257_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road with a narrow raised median and reddish pavement curves gently right; the surface looks good and traffic is light to moderate. A brown work truck travels ahead in the ego lane moving away along the curve, effectively setting the ego vehicle's pace. In the oncoming right lane, a small white truck approaches near the median and continues past. Farther ahead in the same oncoming lane, a white van approaches and passes opposite the truck. Yellow chevron markers on the median highlight the right bend. Several bicycles are parked off the left curb by a shop, clear of the lane.", "hazard_reasoning": "There is a brown truck driving in the ego lane away from the ego car. The driver should be aware of the red traffic light ahead to prepare to stop safely."}
{"id": "train_06417", "split": "train", "clip_key": "2020-0226-101332_062190_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "062190"}, "frames": ["2020-0226-101332_062190_movie_t-3.jpg", "2020-0226-101332_062190_movie_t-2.jpg", "2020-0226-101332_062190_movie_t-1.jpg", "2020-0226-101332_062190_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "A dense urban multilane arterial with three same-direction lanes and no physical median runs through tall buildings; the pavement looks clean and traffic is heavy as vehicles queue at an intersection. A silver van directly ahead in the ego lane is stopped for a red traffic light, holding the ego car. To the left, a red taxi slightly ahead waits in the neighboring lane at the same light without moving. In the right lane, a white high-roof van ahead also remains stationary, limiting any lateral escape space. Overhead traffic signals ahead display red.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop immediately to avoid colliding with the stationary van at the red signal."}
{"id": "train_06418", "split": "train", "clip_key": "2020-0207-101955_000687_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "000687"}, "frames": ["2020-0207-101955_000687_movie_t-3.jpg", "2020-0207-101955_000687_movie_t-2.jpg", "2020-0207-101955_000687_movie_t-1.jpg", "2020-0207-101955_000687_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with stopped vehicle.", "environment_perception": "An urban multi-lane road approaches a signalized intersection, the pavement dry and in good condition, with moderate flow. A black taxi directly ahead in the ego lane is stopped, waiting to turn right, so it holds the lane and sets the pace. In the adjacent lane to the left, a white box truck proceeds straight past the queue, limiting an easy lane change. At the far right corner, a large crowd of pedestrians waits at the crosswalk to cross. Overhead traffic lights are visible among dense storefront signs, and a low guardrail with shrubs lines the right edge.", "hazard_reasoning": "There is a black SUV stopped in the ego lane because it is waiting to turn right. The driver should stop to avoid rear-ending the stationary vehicle."}
{"id": "train_06419", "split": "train", "clip_key": "2020-0203-114632_023904_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "023904"}, "frames": ["2020-0203-114632_023904_movie_t-3.jpg", "2020-0203-114632_023904_movie_t-2.jpg", "2020-0203-114632_023904_movie_t-1.jpg", "2020-0203-114632_023904_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement and painted center lines carries moderate two-way traffic toward a signalized intersection. A white box truck ahead in the ego lane drives away steadily, remaining in our path and governing our following speed. To the right, an oncoming black sedan proceeds straight in its lane through the junction, passing without encroaching. At the far right edge, a white pickup approaches in the curbside oncoming lane and continues past. Overhead traffic lights and signs are visible, and no obstacles or work zones appear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06420", "split": "train", "clip_key": "2020-0204-150838_052134_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "052134"}, "frames": ["2020-0204-150838_052134_movie_t-3.jpg", "2020-0204-150838_052134_movie_t-2.jpg", "2020-0204-150838_052134_movie_t-1.jpg", "2020-0204-150838_052134_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road with smooth pavement approaches a signalized junction beside an elevated expressway ramp, and traffic is light to moderate moving steadily. A gray box truck directly ahead in the ego lane accelerates away because the space in front of it is clear. In the adjacent left lane, a small silver van just ahead continues straight at a moderate speed parallel to the ego path. Farther ahead in that lane, a white delivery van proceeds straight, maintaining its gap. Overhead signals display green arrows for straight and left movements, and no pedestrians or obstacles are visible near the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06421", "split": "train", "clip_key": "2020-0220-102630_011592_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "011592"}, "frames": ["2020-0220-102630_011592_movie_t-3.jpg", "2020-0220-102630_011592_movie_t-2.jpg", "2020-0220-102630_011592_movie_t-1.jpg", "2020-0220-102630_011592_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped van.", "environment_perception": "An urban divided arterial with two lanes in our direction curves gently right, bordered by a hedge median on the right and buildings on the left; the pavement is smooth and traffic is moderate with steady flow. A white car ahead in the ego lane travels at a steady pace and sets our following distance. There is a silver van stopped on the left side of the road near the curb, creating a minor roadside obstruction that may cause left-lane vehicles to edge right. Another car alongside in the right lane continues straight at similar speed without encroaching. Opposing traffic moves on the far side of the median and stays separate from our path.", "hazard_reasoning": "There is a silver van stopped on the left side of the road. The stationary van could obscure your path or pull back into traffic unexpectedly, so you should be aware of its presence."}
{"id": "train_06422", "split": "train", "clip_key": "2020-0228-102841_042557_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "042557"}, "frames": ["2020-0228-102841_042557_movie_t-3.jpg", "2020-0228-102841_042557_movie_t-2.jpg", "2020-0228-102841_042557_movie_t-1.jpg", "2020-0228-102841_042557_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth dry pavement runs straight, with a park and trees on the left and a modern building on the right; a guardrail separates a parallel side lane, and traffic is moderate and flowing. A dark hatchback ahead in the ego lane continues straight at a steady pace, effectively setting the ego vehicle's speed. A motorcyclist just ahead near the lane line accelerates between vehicles and may move into the ego lane. On the parallel right lane beyond the guardrail, a small blue car and other vehicles travel in the same direction and appear to converge with the main lanes farther ahead.", "hazard_reasoning": "There are no visible hazards in the scene; drivers should maintain normal vigilance and monitor for any changes."}
{"id": "train_06423", "split": "train", "clip_key": "2020-0205-103411_049428_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "049428"}, "frames": ["2020-0205-103411_049428_movie_t-3.jpg", "2020-0205-103411_049428_movie_t-2.jpg", "2020-0205-103411_049428_movie_t-1.jpg", "2020-0205-103411_049428_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with three same-direction lanes shows smooth pavement and heavy, slow traffic that is queued at a signal. The flow remains stopped through the clip. A black hatchback directly ahead in the ego lane is stationary because the traffic light is red, keeping the ego vehicle halted. To the right, several white and silver vans are stopped in the adjacent lane alongside the ego car, maintaining their positions in the queue and preventing lateral movement. On the left, a white sedan sits slightly behind the ego car while another dark compact ahead in that lane also waits, both holding their places. Far ahead beneath a pedestrian overpass, the traffic signal displays red and governs all lanes.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid colliding with the stationary vehicle ahead at the red signal."}
{"id": "train_06424", "split": "train", "clip_key": "titan_clip_892_000108_movie", "source": {"subset": "titan", "scenario": "clip_892", "frame": "000108"}, "frames": ["titan_clip_892_000108_movie_t-3.jpg", "titan_clip_892_000108_movie_t-2.jpg", "titan_clip_892_000108_movie_t-1.jpg", "titan_clip_892_000108_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist crossing ahead", "environment_perception": "An urban two-way street lined with shops has a single lane in each direction, no median, and smooth pavement, with light traffic throughout. An oncoming cyclist wearing black pants rides toward the ego vehicle near the middle of the road, briefly occupying the center and potentially encroaching into the ego lane. Two pedestrians on the left walk along the sidewalk near the crosswalk, continuing without stepping into the street. A small white van is stopped at the left curb ahead, and a line of orange cones farther along narrows the left edge of the lane.", "hazard_reasoning": "There is a cyclist wearing black pants and cycling toward the ego car, in the middle of the road. The cyclist is traveling in the center of the lane and may cross the vehicle's path, so the driver should yield to avoid collision."}
{"id": "train_06425", "split": "train", "clip_key": "2020-0210-101957_009175_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "009175"}, "frames": ["2020-0210-101957_009175_movie_t-3.jpg", "2020-0210-101957_009175_movie_t-2.jpg", "2020-0210-101957_009175_movie_t-1.jpg", "2020-0210-101957_009175_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban two-lane two-way road with a double solid center line runs between mid-rise buildings; the pavement is smooth and traffic slows near a pinch point ahead. A green sedan directly ahead in the ego lane slows because of congestion and sets the pace. An oncoming white light truck approaches in the opposite lane close to the centerline and continues straight as it threads past the bottleneck. Farther ahead, a large bus stands on the left side with other heavy vehicles queued around it, narrowing the carriageway and sustaining the slowdown.", "hazard_reasoning": "There is a green sedan slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a rear-end collision due to the reduced speed of the vehicle ahead."}
{"id": "train_06426", "split": "train", "clip_key": "titan_clip_1085_000306_movie", "source": {"subset": "titan", "scenario": "clip_1085", "frame": "000306"}, "frames": ["titan_clip_1085_000306_movie_t-3.jpg", "titan_clip_1085_000306_movie_t-2.jpg", "titan_clip_1085_000306_movie_t-1.jpg", "titan_clip_1085_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban backstreet with a single narrow lane and no centerline runs between close buildings; the asphalt is intact and traffic is light with no moving vehicles. On the left edge ahead, a woman carrying a handbag and wearing a black dress walks away from the ego car along the curb, occupying space near the travel path. Farther ahead near the center-right of the lane, a person under a white umbrella pulls a suitcase while walking away, remaining in the lane and constraining the ego vehicle's pace. The street lacks sidewalks and is lined with poles and signs close to the carriageway, leaving limited clearance.", "hazard_reasoning": "There is a woman carrying a handbag, wearing a black dress, and walking on the left side of the road, away from the ego car. This pedestrian is close to the vehicle's path and may step into the lane unexpectedly, so the driver should slow down."}
{"id": "train_06427", "split": "train", "clip_key": "titan_clip_1031_000168_movie", "source": {"subset": "titan", "scenario": "clip_1031", "frame": "000168"}, "frames": ["titan_clip_1031_000168_movie_t-3.jpg", "titan_clip_1031_000168_movie_t-2.jpg", "titan_clip_1031_000168_movie_t-1.jpg", "titan_clip_1031_000168_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be cautious of traffic cone ahead.", "environment_perception": "A narrow urban residential street with no centerline runs straight ahead on intact pavement, and overall traffic is light with no moving vehicles. A blue dump truck is stopped along the left edge just ahead beside a work area and partly intrudes into the lane, restricting the ego vehicle's space. Farther ahead, another blue work truck also stands on the left and protrudes slightly into the lane, creating a pinch point. A row of orange traffic cones, including an orange cone on the left side of the road, lines the work zone and shifts travel toward the right. Bicycles and tools are parked near buildings on the right, adding minor roadside clutter.", "hazard_reasoning": "There is an orange traffic cone, on the left side of the road. A cone indicates a potential obstruction and lane narrowing ahead, so the driver should stay alert and adjust path early."}
{"id": "train_06428", "split": "train", "clip_key": "titan_clip_747_000036_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_747_000036_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_747_000036_movie_t-3_augB1.jpg", "titan_clip_747_000036_movie_t-2_augB1.jpg", "titan_clip_747_000036_movie_t-1_augB1.jpg", "titan_clip_747_000036_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way shared lane and no divider shows smooth but slightly patched pavement and very light vehicular traffic; only pedestrians are moving and conditions are steady. Ahead in the middle of the lane, a pedestrian in a white T-shirt walks away from the ego vehicle along the center of the road, occupying the intended path. On the right edge by storefronts, a woman in a white top and long red skirt walks toward the camera near the curb, close enough to encroach on the lane. On the left near two orange cones, a man steps off the sidewalk and crosses diagonally toward the center, potentially entering the ego lane. Parked bicycles and the cone barrier narrow the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt, walking in the middle of the road, away from the ego car. The pedestrian's position in the travel lane poses a collision risk, so the driver should slow down to maintain control and ensure safety."}
{"id": "train_06429", "split": "train", "clip_key": "titan_clip_772_000396_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_772_000396_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_772_000396_movie_t-3_augB1.jpg", "titan_clip_772_000396_movie_t-2_augB1.jpg", "titan_clip_772_000396_movie_t-1_augB1.jpg", "titan_clip_772_000396_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street with a narrow two-way roadway has worn pavement, no center divider, and no clear sidewalks, so traffic is slow and mixed with pedestrians. A backpacked pedestrian in a black T-shirt and gray shorts walks in the middle of the road toward the ego vehicle, potentially entering its path because there is no sidewalk. Ahead left near the storefront, another pedestrian steps from the doorway and crosses toward the roadway center, edging into the ego lane. On the right edge, a backpacked man walks toward the camera along the curb, narrowing the available space for the vehicle. No other vehicles or signals are prominent.", "hazard_reasoning": "There is a pedestrian carrying a backpack, wearing a black t-shirt and gray shorts, walking in the middle of the road, towards the ego car, because there is no sidewalk. The driver should slow down because the pedestrian is directly in the vehicle's path and could step unpredictably."}
{"id": "train_06430", "split": "train", "clip_key": "titan_clip_717_000396_movie", "source": {"subset": "titan", "scenario": "clip_717", "frame": "000396"}, "frames": ["titan_clip_717_000396_movie_t-3.jpg", "titan_clip_717_000396_movie_t-2.jpg", "titan_clip_717_000396_movie_t-1.jpg", "titan_clip_717_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with no centerline runs between tall buildings; the pavement is dry and smooth, and traffic is light with no oncoming vehicles visible. Ahead near the left curb in the ego direction, a white van is stopped, narrowing the passage and potentially constraining the vehicle's pace. At the open garage on the left, a black minivan sits stationary at the entrance close to the roadway, positioned where it may enter the ego lane. In front of the ego car on the left side, a woman carrying a handbag, wearing a blue shirt and a black skirt, walks away from the ego car along the road edge, moving ahead in the same direction and briefly occupying space in the lane.", "hazard_reasoning": "There is a woman carrying a handbag, wearing a blue shirt and a black skirt and walking in front of the ego car, away from ego car. The driver should slow down to maintain a safe distance and avoid a collision with the pedestrian."}
{"id": "train_06431", "split": "train", "clip_key": "titan_clip_592_000054_movie", "source": {"subset": "titan", "scenario": "clip_592", "frame": "000054"}, "frames": ["titan_clip_592_000054_movie_t-3.jpg", "titan_clip_592_000054_movie_t-2.jpg", "titan_clip_592_000054_movie_t-1.jpg", "titan_clip_592_000054_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban two-way street with a single narrow lane in each direction curves gently right, and the ego car proceeds in the left lane; there is no median, the asphalt is worn with patches and a manhole, and traffic is light. Far ahead in the same direction, a small white van continues straight and gradually pulls away. On the right edge close to the ego, a pedestrian in a black dress walks toward the car along the curb, likely because the sidewalk is blocked, and may encroach on the lane. A side street opens from the left but no vehicles emerge. A blue mandatory straight-ahead sign stands on the left, and construction cones and barriers on the right restrict the sidewalk near a building wall.", "hazard_reasoning": "There is a pedestrian wearing a black dress, walking on the right side of the road, towards the ego car, because the sidewalk is blocked. The driver should be aware since the pedestrian may step into the travel lane unexpectedly."}
{"id": "train_06432", "split": "train", "clip_key": "titan_clip_42_000126_movie", "source": {"subset": "titan", "scenario": "clip_42", "frame": "000126"}, "frames": ["titan_clip_42_000126_movie_t-3.jpg", "titan_clip_42_000126_movie_t-2.jpg", "titan_clip_42_000126_movie_t-1.jpg", "titan_clip_42_000126_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street has a narrow single shared lane with block paving, no divider, and light vehicle flow but many pedestrians; the ego car proceeds straight at low speed. Cones line the left curb beside storefronts. Ahead in the ego lane, several pedestrians walk away along the middle of the road and constrain the vehicle's pace. On the left side, a pedestrian carrying a backpack and wearing black pants walks away from the ego car along the edge, close to the travel path. A white scooter is parked at the right curb, narrowing the corridor.", "hazard_reasoning": "There's a pedestrian carrying a backpack, wearing black pants, walking on the left side of the road, away from the ego car. The pedestrian may change direction or step into the vehicle's path unexpectedly, so the driver should slow down to ensure safety."}
{"id": "train_06433", "split": "train", "clip_key": "2020-0228-102841_081402_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "081402"}, "frames": ["2020-0228-102841_081402_movie_t-3.jpg", "2020-0228-102841_081402_movie_t-2.jpg", "2020-0228-102841_081402_movie_t-1.jpg", "2020-0228-102841_081402_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches an intersection, with three same-direction lanes separated by painted chevrons on smooth pavement, and traffic is heavy and mostly stopped. A red motorcycle waits directly ahead in the ego lane, halted with the queue as the signal ahead shows red. Farther ahead in the same lane, a yellow box truck is stationary and constrains the line's movement. In the adjacent right lane, a silver minivan alongside creeps forward with little gap, remaining parallel to the ego vehicle. Other vehicles in the left lane are similarly queued.", "hazard_reasoning": "There is a red motorcycle stopped in the ego lane, because of the red traffic light. The driver should stop to avoid colliding with the stationary motorcycle ahead."}
{"id": "train_06434", "split": "train", "clip_key": "titan_clip_515_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_515_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_515_000204_movie_t-3_augB1.jpg", "titan_clip_515_000204_movie_t-2_augB1.jpg", "titan_clip_515_000204_movie_t-1_augB1.jpg", "titan_clip_515_000204_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban residential road climbs uphill with no marked centerline, smooth pavement, and tight walls and fences at the edges; traffic is light and no oncoming vehicles appear. Ahead in the same direction, a small truck near the middle of the roadway slows or pauses, partially blocking the uphill path and setting the ego vehicle's pace. To its left, a pedestrian wearing a cap and a blue shirt walks in the middle of the road toward the left side, and may enter the ego lane as the vehicle approaches. No salient traffic signals or signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a cap and a blue shirt, walking in the middle of the road, to the left side of the road. The pedestrian could enter the vehicle's path on the left, so the driver should manoeuvre safely around them."}
{"id": "train_06435", "split": "train", "clip_key": "2020-0129-144857_068041_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "068041"}, "frames": ["2020-0129-144857_068041_movie_t-3.jpg", "2020-0129-144857_068041_movie_t-2.jpg", "2020-0129-144857_068041_movie_t-1.jpg", "2020-0129-144857_068041_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with dry pavement and a right-side guardrail separating opposing lanes carries heavy, stop-and-go traffic. Directly ahead in the ego lane, a car is stopped because of congestion building toward the intersection. In the adjacent left lane a large flatbed truck also waits in the queue, constraining the ego vehicle's view and pace. To the right beyond the barrier, oncoming vehicles pass along the opposite carriageway without interacting with the ego path. Overhead lane-use signs indicate straight and right-turn movements at the signalized junction ahead.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with queued vehicles and adapt to the slowed traffic."}
{"id": "train_06436", "split": "train", "clip_key": "2020-0217-110854_004205_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-110854_004205_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-110854_004205_movie_t-3_augB1.jpg", "2020-0217-110854_004205_movie_t-2_augB1.jpg", "2020-0217-110854_004205_movie_t-1_augB1.jpg", "2020-0217-110854_004205_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street forms a narrow two-way road with one lane each direction and no median; the ego proceeds in the left lane on wet but intact pavement while overall flow is slow. A white sedan directly ahead in the ego lane slows because congestion builds, and it controls the ego car's pace. Farther ahead in the same direction, a white box truck moves very slowly near midblock, creating the queue that delays following traffic. On the right sidewalk, a woman at a storefront stands close to the curb and turns toward the street, potentially nearing the ego path. A traffic signal is visible farther ahead above the roadway.", "hazard_reasoning": "There is a white sedan slowing down in the ego lane, in front of the ego car because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adapt to the reduced speed due to the congested traffic ahead."}
{"id": "train_06437", "split": "train", "clip_key": "2020-0131-103016_054287_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "054287"}, "frames": ["2020-0131-103016_054287_movie_t-3.jpg", "2020-0131-103016_054287_movie_t-2.jpg", "2020-0131-103016_054287_movie_t-1.jpg", "2020-0131-103016_054287_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of merging minivan", "environment_perception": "An urban divided arterial with multiple same-direction lanes and a planted median shows smooth pavement and moderate traffic that thickens near an overhead sign structure. A black minivan ahead left moves right into the ego lane, changing over from the left lane because the ego lane is clear and then continues ahead, briefly setting the pace. Farther ahead, a line of same-direction cars slows toward the intersection area, compressing flow. On the left sidewalk, a few pedestrians stand behind a railing near shopfronts and remain off the roadway.", "hazard_reasoning": "There is a black minivan that is changing lanes, from the left lane, to the ego-car lane, because the ego lane is clear of traffic. The minivan's merge may unexpectedly encroach on the ego-vehicle's path, so maintain caution."}
{"id": "train_06438", "split": "train", "clip_key": "2020-0227-153144_035007_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "035007"}, "frames": ["2020-0227-153144_035007_movie_t-3.jpg", "2020-0227-153144_035007_movie_t-2.jpg", "2020-0227-153144_035007_movie_t-1.jpg", "2020-0227-153144_035007_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop and wait for congestion ahead.", "environment_perception": "An urban multi-lane road with smooth pavement carries heavy, stop-and-go traffic, bordered on the right by a guardrail with shrubs; queues persist even as a distant signal shows green. A small white microvan is directly ahead in the ego lane, stopped with brake lights on and constraining the ego vehicle's pace. A white SUV ahead-right is also stopped because of traffic congestion ahead. A silver van to the left moves slowly in the adjacent lane, running parallel and limiting opportunities to merge. Further ahead, tightly packed cars fill the lanes toward the intersection.", "hazard_reasoning": "There is a white SUV stopped in the ego lane, because of traffic congestion ahead. The stopped vehicle blocks the lane and requires the driver to stop and wait until the congestion clears."}
{"id": "train_06439", "split": "train", "clip_key": "2020-0227-104226_094077_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "094077"}, "frames": ["2020-0227-104226_094077_movie_t-3.jpg", "2020-0227-104226_094077_movie_t-2.jpg", "2020-0227-104226_094077_movie_t-1.jpg", "2020-0227-104226_094077_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two lanes in the ego vehicle's direction runs between midrise buildings on a smooth surface, and traffic is heavy with stop-and-go flow. The ego car is in the left lane behind a gray minivan that is stopped because of congestion ahead, keeping the ego vehicle stationary. To the right, a silver hatchback in the adjacent same-direction lane inches forward alongside, limiting space for a lane change. Farther ahead in that right lane, several box trucks crawl forward in a queue, contributing to the jam. A guardrail lines the left edge, leaving little shoulder.", "hazard_reasoning": "There is a gray minivan stopped in front of the ego car, because of traffic congestion ahead. The driver must stop to avoid rear-ending the halted minivan and safely adapt to the slowing traffic conditions."}
{"id": "train_06440", "split": "train", "clip_key": "titan_clip_1034_000408_movie", "source": {"subset": "titan", "scenario": "clip_1034", "frame": "000408"}, "frames": ["titan_clip_1034_000408_movie_t-3.jpg", "titan_clip_1034_000408_movie_t-2.jpg", "titan_clip_1034_000408_movie_t-1.jpg", "titan_clip_1034_000408_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow one-lane shared surface and no median stretches ahead, the paving in good condition and overall traffic light as the road forks slightly ahead. A white van ahead in the ego lane moves slowly toward the fork and briefly pauses near storefronts, constraining the ego vehicle's speed. On the left edge close to the camera, a man carrying an umbrella and looking at his cell phone walks toward the ego vehicle along the roadway and may drift into the lane. Farther ahead near the center, another pedestrian crosses from the right toward the left across the ego path.", "hazard_reasoning": "There is a man carrying an umbrella, looking into a cell phone, and walking on the left side of the road, walking toward the ego car. The pedestrian is distracted and moving toward your path, so slowing down helps you react in time and avoid a potential collision."}
{"id": "train_06441", "split": "train", "clip_key": "2020-0214-145407_022436_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "022436"}, "frames": ["2020-0214-145407_022436_movie_t-3.jpg", "2020-0214-145407_022436_movie_t-2.jpg", "2020-0214-145407_022436_movie_t-1.jpg", "2020-0214-145407_022436_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with trees and city buildings lies ahead; the pavement is smooth and traffic is slow and queuing. In the ego lane directly ahead, a dull red dump truck is stopped because of congestion, constraining the ego vehicle's pace. To the right, a dark SUV in the adjacent lane moves past at a slightly higher speed without signaling a merge. Farther ahead in the right lane, another truck continues steadily with the queue. A curb and guardrail line the left edge, and no pedestrians or cyclists appear.", "hazard_reasoning": "There is a dull, red truck stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. You should stop to avoid colliding with the halted vehicle ahead."}
{"id": "train_06442", "split": "train", "clip_key": "2020-0203-114632_076436_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "076436"}, "frames": ["2020-0203-114632_076436_movie_t-3.jpg", "2020-0203-114632_076436_movie_t-2.jpg", "2020-0203-114632_076436_movie_t-1.jpg", "2020-0203-114632_076436_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A two-lane urban road with a solid orange centerline and smooth, dry pavement unfolds ahead, and traffic appears light to moderate as the car moves beneath a pedestrian overpass. A white van ahead in the ego lane drives away from the camera at a steady pace, effectively leading the ego vehicle. An oncoming white sedan approaches in the opposite lane and continues straight, remaining separated by the centerline. An overhead sign on the footbridge points straight ahead. Several large trucks are parked along the far-right curb on the opposite side, while the ego lane remains clear.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. Since the van is approaching a red traffic light, it may stop abruptly, so maintain a safe following distance."}
{"id": "train_06443", "split": "train", "clip_key": "titan_clip_1200_000054_movie", "source": {"subset": "titan", "scenario": "clip_1200", "frame": "000054"}, "frames": ["titan_clip_1200_000054_movie_t-3.jpg", "titan_clip_1200_000054_movie_t-2.jpg", "titan_clip_1200_000054_movie_t-1.jpg", "titan_clip_1200_000054_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of squatting pedestrian", "environment_perception": "A narrow urban side street with no marked centerline runs past building fronts; the ego vehicle travels on dry asphalt with light traffic and no moving vehicles ahead or oncoming. Ahead on the left edge, a pedestrian wearing black pants and a white shirt is squatting beside the curb, stationary and close to the travel lane, which may bring them into the ego vehicle's path. No other road users are visible. Vending machines and utility poles line the right-side wall, tightening the roadside but not intruding into the lane.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, squatting on the left side of the road. The pedestrian may move into the travel lane unexpectedly from this position, so the driver should remain alert to avoid a collision."}
{"id": "train_06444", "split": "train", "clip_key": "2020-0214-145407_020391_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "020391"}, "frames": ["2020-0214-145407_020391_movie_t-3.jpg", "2020-0214-145407_020391_movie_t-2.jpg", "2020-0214-145407_020391_movie_t-1.jpg", "2020-0214-145407_020391_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban three-lane arterial with no median runs between office towers and a tree-lined sidewalk with a curb fence; the pavement is smooth and traffic is heavy and slow. Directly ahead in the ego lane, a black hatchback is stopped because the signal up the road shows red, holding the ego car. Farther ahead in the same lane, a large white box truck waits in the queue, keeping the line stationary. In the adjacent right lane, a white sedan and a small white van creep forward alongside, restricting any chance for the ego vehicle to change lanes. The overhead traffic light remains red while vehicles wait.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of a traffic light ahead. The driver must stop to avoid a collision with the stationary vehicle ahead."}
{"id": "train_06445", "split": "train", "clip_key": "2020-0221-115122_028899_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "028899"}, "frames": ["2020-0221-115122_028899_movie_t-3.jpg", "2020-0221-115122_028899_movie_t-2.jpg", "2020-0221-115122_028899_movie_t-1.jpg", "2020-0221-115122_028899_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop due to traffic congestion ahead.", "environment_perception": "An urban arterial under an elevated expressway carries two same-direction lanes with a concrete barrier on the left; the pavement is dry and traffic is heavy and stop-and-go. A white hatchback directly ahead in the left ego lane is stopped because congestion blocks the lane, holding the ego vehicle. In the adjacent right lane, a silver van and a black SUV creep forward alongside and slightly ahead, slowly overtaking and limiting any chance to merge. Farther ahead under the viaduct, several cars and a small truck queue intermittently, setting a slow pace for both lanes. No oncoming traffic appears within this divided roadway.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The stationary vehicle poses a collision risk if you do not apply the brakes promptly, so you should stop due to the congestion ahead."}
{"id": "train_06446", "split": "train", "clip_key": "titan_clip_13_000048_movie", "source": {"subset": "titan", "scenario": "clip_13", "frame": "000048"}, "frames": ["titan_clip_13_000048_movie_t-3.jpg", "titan_clip_13_000048_movie_t-2.jpg", "titan_clip_13_000048_movie_t-1.jpg", "titan_clip_13_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian", "environment_perception": "An urban shopping street with a narrow single lane and brick paving extends ahead, the surface dry and smooth with light traffic. In the foreground two pedestrians from the right sidewalk step onto the zebra crossing and move left across the ego vehicle's path. Ahead along the left curb, a pedestrian wearing a blue T-shirt and black pants pushes a blue cart away from the ego car, staying by the edge and reducing clearance on that side. Farther ahead on the right, a white box truck stands stopped within a line of cones, narrowing the available lane. A blue pedestrian crossing sign is visible on the right.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt, black pants, and pushing a blue cart, walking on the left side of the road, away from the ego car. The pedestrian and cart may unexpectedly enter the vehicle's path, so the driver should be cautious."}
{"id": "train_06447", "split": "train", "clip_key": "titan_clip_363_000120_movie", "source": {"subset": "titan", "scenario": "clip_363", "frame": "000120"}, "frames": ["titan_clip_363_000120_movie_t-3.jpg", "titan_clip_363_000120_movie_t-2.jpg", "titan_clip_363_000120_movie_t-1.jpg", "titan_clip_363_000120_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of the pedestrian ahead", "environment_perception": "A narrow urban residential street without a centerline runs between houses on the left and a hedge on the right; the pavement is dry and traffic is light with no moving vehicles. Parked covered cars line the left side while low blocks border the right verge. A pedestrian close on the left edge ahead walks away along the curb, near the travel lane, which may constrain pace. Farther ahead on the left, a pedestrian carrying an umbrella walks away from the ego vehicle in the roadway and may enter the lane. Another person is visible farther ahead near the center, proceeding along the street and sharing the lane.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and walking on the left side of the road, away from the ego car. The pedestrian could step into the lane unexpectedly, especially around the blind bend, requiring reduced speed and heightened attention."}
{"id": "train_06448", "split": "train", "clip_key": "2020-0203-154554_050959_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "050959"}, "frames": ["2020-0203-154554_050959_movie_t-3.jpg", "2020-0203-154554_050959_movie_t-2.jpg", "2020-0203-154554_050959_movie_t-1.jpg", "2020-0203-154554_050959_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under an elevated expressway, with two same-direction lanes and a left-side guardrail; the pavement is dry and traffic is heavy, queued at a signal showing red. A gray sedan directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the adjacent right lane, a white flatbed truck just ahead slows to a halt beside the sedan, limiting space to the right. Farther ahead in that right lane, a dark minivan remains stopped in the queue, keeping overall flow stationary. Overhead traffic lights facing the ego direction display red.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car in the ego lane, because the light is red. You should stop to maintain a safe distance and comply with the red signal."}
{"id": "train_06449", "split": "train", "clip_key": "2020-0131-135401_007041_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "007041"}, "frames": ["2020-0131-135401_007041_movie_t-3.jpg", "2020-0131-135401_007041_movie_t-2.jpg", "2020-0131-135401_007041_movie_t-1.jpg", "2020-0131-135401_007041_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban, narrow two-way street with no median and clean asphalt is shown, with light traffic but movement halted in the ego lane. A white semi-truck is stopped directly ahead in the ego lane, blocking the path and controlling the ego car's pace. On the left, a pedestrian near the curb walks along the sidewalk beside vehicles and remains off the roadway. Several small white vans are parked along the left shoulder, narrowing the carriageway and contributing to the obstruction. A fence lines the right side and bright sun glare from the upper right reduces contrast, and no oncoming vehicles are visible during the clip.", "hazard_reasoning": "There is a white semi-truck stopped in front of the ego car. The driver should stop to avoid colliding with the stationary truck that is blocking the lane ahead."}
{"id": "train_06450", "split": "train", "clip_key": "2020-0127-132751_029127_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0127-132751_029127_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0127-132751_029127_movie_t-3_augB1.jpg", "2020-0127-132751_029127_movie_t-2_augB1.jpg", "2020-0127-132751_029127_movie_t-1_augB1.jpg", "2020-0127-132751_029127_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane roadway runs between mid-rise buildings, with a raised fence along the right edge; the pavement appears dry and smooth, and traffic moves at a moderate pace. A white box truck directly ahead in the ego lane slows slightly, constraining the ego car's pace. In the adjacent left lane a white van travels ahead at a steady speed alongside the truck, limiting room to merge. Very close on the left, the front of a white passenger car sits alongside the ego vehicle, further restricting a lane change. Overhead and roadside circular signs show a posted speed of 50.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_06451", "split": "train", "clip_key": "2020-0203-114632_029862_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "029862"}, "frames": ["2020-0203-114632_029862_movie_t-3.jpg", "2020-0203-114632_029862_movie_t-2.jpg", "2020-0203-114632_029862_movie_t-1.jpg", "2020-0203-114632_029862_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane boulevard with smooth dry pavement shows slow, stop-and-go flow, separated from oncoming traffic by a painted center line. A white van is directly ahead in the ego lane and remains stopped due to congestion ahead, holding the ego vehicle. In the opposite lanes to the right, a white sedan approaches steadily, separated by the painted divider and posing no conflict. Pedestrians walk along the left sidewalk behind a guardrail without entering the roadway. An overhead blue sign provides lane guidance with straight-ahead arrows and a right-turn option.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Drivers should stop to avoid a collision with the halted van ahead caused by traffic congestion."}
{"id": "train_06452", "split": "train", "clip_key": "titan_clip_222_000282_movie", "source": {"subset": "titan", "scenario": "clip_222", "frame": "000282"}, "frames": ["titan_clip_222_000282_movie_t-3.jpg", "titan_clip_222_000282_movie_t-2.jpg", "titan_clip_222_000282_movie_t-1.jpg", "titan_clip_222_000282_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with a single lane each direction runs between tall buildings, with a marked zebra crossing and smooth pavement; traffic is light and slow near the crosswalk. A man on a bicycle rides across the crosswalk from the right to the left directly ahead of the ego vehicle, constraining its pace. A girl wearing a black T-shirt, blue shorts, and a cap cycles from the left to the right across the same crosswalk in front of the car. A pedestrian in dark clothing walks from the left sidewalk toward the right across the lane, also requiring the ego vehicle to yield. A small van sits ahead in the same direction beyond the crossing, and several vehicles are parked along the curbs. A blue pedestrian-crossing sign is visible at the intersection.", "hazard_reasoning": "There is a girl, wearing a black t-shirt, blue shorts, and a cap, cycling, from the left side to the right side. Because the cyclist is crossing ahead and may be obscured by the parked truck, you must stop to avoid a collision."}
{"id": "train_06453", "split": "train", "clip_key": "2020-0210-101957_019309_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_019309_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_019309_movie_t-3_augB1.jpg", "2020-0210-101957_019309_movie_t-2_augB1.jpg", "2020-0210-101957_019309_movie_t-1_augB1.jpg", "2020-0210-101957_019309_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "An urban multilane arterial with three same-direction lanes and smooth pavement carries heavy, slow traffic approaching an intersection. A gray motorcycle waits directly ahead in the ego lane, stopped because a red traffic light ahead has halted the line. A white van slightly farther ahead in the same lane is stationary and keeps the motorcycle and ego car from moving. In the left lane a black minivan is stopped alongside the ego vehicle, while in the right lane a large box truck stands a little farther forward, narrowing the view toward the junction. Overhead blue guide signs for Route 8 are visible.", "hazard_reasoning": "There is a gray motorcycle in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop immediately to maintain safe distance and comply with the red light."}
{"id": "train_06454", "split": "train", "clip_key": "titan_clip_1153_000336_movie", "source": {"subset": "titan", "scenario": "clip_1153", "frame": "000336"}, "frames": ["titan_clip_1153_000336_movie_t-3.jpg", "titan_clip_1153_000336_movie_t-2.jpg", "titan_clip_1153_000336_movie_t-1.jpg", "titan_clip_1153_000336_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "A dense urban shopping street appears, a narrow two-way road with no center line and block paving in good condition; traffic is light and slow. On the right ahead at the oncoming-side curb, a blue truck is parked facing the ego vehicle, and its driver opens the door, narrowing the passage. A pedestrian walks along the middle of the roadway ahead, moving away from the ego car and likely setting the pace. Another person stands at a storefront on the right near the edge of the road, close to the travel path. Parked bicycles line the right curb and a few cones sit at the left curb, further constricting the usable width.", "hazard_reasoning": "There is a blue truck parked on the right side of the road, towards the ego car, because the driver is opening the door. Drivers should carefully manoeuvre around the truck to avoid colliding with the opening door and ensure safety."}
{"id": "train_06455", "split": "train", "clip_key": "2020-0203-154554_007610_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "007610"}, "frames": ["2020-0203-154554_007610_movie_t-3.jpg", "2020-0203-154554_007610_movie_t-2.jpg", "2020-0203-154554_007610_movie_t-1.jpg", "2020-0203-154554_007610_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban scene approaches a signalized intersection on a two-lane single-carriageway with no median; the pavement is smooth and traffic is light to moderate. A white sedan ahead in the ego lane slows and begins a right turn at the intersection. A large city bus is stopped in a pull-out along the left curb and remains stationary, not impeding the lane. Several pedestrians wait by the crosswalk on the right side near the corner. A silver wagon is parked along the right curb before the junction.", "hazard_reasoning": "There is a white sedan slowing in front of the ego-car, in the ego lane, because it is making a right hand turn at the intersection. The sedan's deceleration may require the driver to brake suddenly to maintain a safe following distance and avoid collision."}
{"id": "train_06456", "split": "train", "clip_key": "titan_clip_1386_000408_movie", "source": {"subset": "titan", "scenario": "clip_1386", "frame": "000408"}, "frames": ["titan_clip_1386_000408_movie_t-3.jpg", "titan_clip_1386_000408_movie_t-2.jpg", "titan_clip_1386_000408_movie_t-1.jpg", "titan_clip_1386_000408_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "A narrow undivided urban street with one lane in each direction has worn, patched pavement and very light traffic. A black van is parked on the left side of the road just ahead, encroaching into the travel lane and constraining the ego vehicle's path. On the right edge, a worker in blue walks beside a line of cones near a shopfront, close to the curb and briefly approaching the roadway. Far ahead at a cross-street, a small light car moves across the intersection without affecting the ego path. Temporary hoarding and cones along the right create a pinch point, and additional parked scooters and barriers further narrow the corridor.", "hazard_reasoning": "There is a black van parked on the left side of the road. The parked van reduces the available lane width, requiring the driver to manoeuvre carefully to avoid collision."}
{"id": "train_06457", "split": "train", "clip_key": "2020-0212-102546_048166_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "048166"}, "frames": ["2020-0212-102546_048166_movie_t-3.jpg", "2020-0212-102546_048166_movie_t-2.jpg", "2020-0212-102546_048166_movie_t-1.jpg", "2020-0212-102546_048166_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial has one through lane in the ego's direction and a red side lane to the right separated by a low curb; the pavement is dry and smooth and traffic is moderate and flowing. A silver van directly ahead in the ego lane accelerates away from the ego car, opening a gap and guiding the pace. To the right, a large white box truck in the red separated lane is stopped alongside the curb, remaining behind the divider. Farther right, a small white van in the same red lane is stopped near the median and stays out of the ego lane. Overhead gantry signs span the roadway.", "hazard_reasoning": "There is a silver van accelerating away from the ego car, in front of the ego-car. The van's acceleration increases the speed gap, so you should follow to maintain a safe distance and avoid sudden speed adjustments."}
{"id": "train_06458", "split": "train", "clip_key": "2020-0226-140503_104945_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "104945"}, "frames": ["2020-0226-140503_104945_movie_t-3.jpg", "2020-0226-140503_104945_movie_t-2.jpg", "2020-0226-140503_104945_movie_t-1.jpg", "2020-0226-140503_104945_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction runs through a commercial area, the pavement dry and smooth, and traffic moderate. Ahead, a white box truck in the ego lane moves forward through a green signal and sets the pace for the ego vehicle. To the right, a queue of oncoming cars, including a red taxi, waits near the intersection on the opposite side of the center line. At the left curb by the zebra crossing, a bicyclist is stopped and waits beside the roadway. The overhead traffic light facing the ego direction shows green.", "hazard_reasoning": "A white truck is driving in front of the ego car in the ego lane, because of the green traffic light. Be aware of the white truck ahead since its movement under the green light may change suddenly."}
{"id": "train_06459", "split": "train", "clip_key": "2020-0210-101957_000482_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "000482"}, "frames": ["2020-0210-101957_000482_movie_t-3.jpg", "2020-0210-101957_000482_movie_t-2.jpg", "2020-0210-101957_000482_movie_t-1.jpg", "2020-0210-101957_000482_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian on left", "environment_perception": "An urban two-way street passes under an overpass toward a signalized intersection with a zebra crossing, single lane each direction, no median, and smooth pavement; traffic is light to moderate. On the left side near the curb, a pedestrian wearing a gray coat and carrying a handbag walks toward the ego car along the road edge. On the right corner, several pedestrians stand by the guardrail at the crosswalk, waiting and watching the junction. Ahead beyond the crosswalk, a dark sedan faces the ego direction near the stop line, appearing to pause on the far side of the intersection.", "hazard_reasoning": "There is a pedestrian wearing a gray coat and carrying a handbag walking on the left side of the road towards the ego car. Because the pedestrian is approaching the vehicle's path, the driver should be aware to prevent a potential collision."}
{"id": "train_06460", "split": "train", "clip_key": "2020-0131-135401_082652_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "082652"}, "frames": ["2020-0131-135401_082652_movie_t-3.jpg", "2020-0131-135401_082652_movie_t-2.jpg", "2020-0131-135401_082652_movie_t-1.jpg", "2020-0131-135401_082652_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with two lanes in the ego direction runs between mid-rise buildings, with a concrete median barrier on the right; the pavement looks smooth and traffic flows at a moderate, steady pace. A white van drives ahead in the ego lane, gradually moving away and setting the immediate pace. In the curbside left lane, a dark SUV ahead continues straight at a similar speed, limiting passing options. Beyond the median to the right, several trucks and vans form oncoming traffic moving toward the camera, clearly separated by the barrier.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06461", "split": "train", "clip_key": "titan_clip_898_000582_movie", "source": {"subset": "titan", "scenario": "clip_898", "frame": "000582"}, "frames": ["titan_clip_898_000582_movie_t-3.jpg", "titan_clip_898_000582_movie_t-2.jpg", "titan_clip_898_000582_movie_t-1.jpg", "titan_clip_898_000582_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked van.", "environment_perception": "An urban street lined with tall buildings extends ahead, a single-carriageway with no center divider and rough, patchy pavement; traffic is light. A pedestrian ahead in the middle of the roadway crosses to the right across the ego path, constraining speed. A black van is parked on the left side of the road near the ego vehicle, partially protruding into the lane and narrowing the passage. On the right edge, a woman with a rolling suitcase stands near the curb beside a fenced work area, close to the travel lane. Far ahead, a small vehicle moves in the same direction toward the distant intersection.", "hazard_reasoning": "There is a black van parked on the left side of the road. A parked van on the left could hide pedestrians or vehicles, so the driver should be aware to anticipate possible hazards."}
{"id": "train_06462", "split": "train", "clip_key": "2020-0203-114632_032442_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "032442"}, "frames": ["2020-0203-114632_032442_movie_t-3.jpg", "2020-0203-114632_032442_movie_t-2.jpg", "2020-0203-114632_032442_movie_t-1.jpg", "2020-0203-114632_032442_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop for pedestrian crossing.", "environment_perception": "An urban multi-lane divided road with a landscaped median on the right curves slightly left, the pavement is smooth, and traffic flows at a moderate, steady pace. A box truck stands ahead along the left curb at the crosswalk, its rear intruding into the curbside lane and narrowing the passage. A pedestrian wearing a white coat waits at the left-side crosswalk directly ahead, near the truck, and may step into the ego lane. A white sedan in the adjacent inner lane ahead proceeds straight through the crossing and continues forward, loosely setting the pace while leaving limited space for the ego car to merge around the truck.", "hazard_reasoning": "There is a pedestrian wearing a white coat and waiting to cross at the crosswalk, to the left side of the road, in front of the ego-car. Therefore, the driver should stop because the pedestrian may step into the lane unexpectedly and must be yielded to immediately."}
{"id": "train_06463", "split": "train", "clip_key": "2020-0207-101955_025162_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "025162"}, "frames": ["2020-0207-101955_025162_movie_t-3.jpg", "2020-0207-101955_025162_movie_t-2.jpg", "2020-0207-101955_025162_movie_t-1.jpg", "2020-0207-101955_025162_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with two lanes in each direction and no physical median stretches ahead on smooth asphalt, and traffic is light to moderate as vehicles approach a signalized intersection. A green truck directly ahead in the ego lane slows and stops for a red signal, constraining the ego car's pace. A cluster of pedestrians at the far crosswalk moves across from left to right while the signal holds, occupying the space ahead of the stopped vehicles. Sparse oncoming traffic on the right waits beyond the junction without affecting the ego path. The overhead traffic lights at the intersection show red.", "hazard_reasoning": "There is a green truck slowing down in front of the ego car because of red traffic light in the ego lane. The truck's sudden deceleration indicates a potential risk of collision, so the driver should slow down to maintain a safe distance."}
{"id": "train_06464", "split": "train", "clip_key": "2020-0203-154554_054570_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "054570"}, "frames": ["2020-0203-154554_054570_movie_t-3.jpg", "2020-0203-154554_054570_movie_t-2.jpg", "2020-0203-154554_054570_movie_t-1.jpg", "2020-0203-154554_054570_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial runs beneath an elevated structure with a right-side guardrail and smooth pavement, and traffic is light and flowing steadily. A white van ahead in the ego lane drives away from the ego car, gradually increasing the gap and loosely setting the pace. A small box truck is ahead in the left lane moving straight at a similar speed without affecting the ego lane. Farther ahead in the right lane, a silver minivan continues straight and remains separated by one lane. Blue overhead direction signs span the roadway, and a pedestrian footbridge and fenced sidewalks line the left side.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06465", "split": "train", "clip_key": "2020-0227-104226_048351_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "048351"}, "frames": ["2020-0227-104226_048351_movie_t-3.jpg", "2020-0227-104226_048351_movie_t-2.jpg", "2020-0227-104226_048351_movie_t-1.jpg", "2020-0227-104226_048351_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane in each direction runs between sidewalks and guardrails, the pavement dry and smooth and traffic moving at a moderate pace. Ahead in the ego lane, a white covered truck slows near the junction because traffic is congested in the intersection, constraining the ego vehicle's speed. In the oncoming lane to the right, a blue medium truck approaches and continues past while staying in its lane. Large blue overhead direction signs mark the upcoming junction.", "hazard_reasoning": "There is a white truck slowing in the ego lane because of traffic congestion ahead in the intersection. The driver should slow down to maintain a safe distance and anticipate further deceleration in the congested intersection."}
{"id": "train_06466", "split": "train", "clip_key": "titan_clip_591_000354_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_591_000354_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_591_000354_movie_t-3_augB1.jpg", "titan_clip_591_000354_movie_t-2_augB1.jpg", "titan_clip_591_000354_movie_t-1_augB1.jpg", "titan_clip_591_000354_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with no median and smooth pavement approaches a small intersection where the main line bends right; traffic is light with no moving motor vehicles ahead or oncoming. A cyclist in a green shirt pulling a green cart is ahead, moving from the left shoulder into the middle of the road and crossing toward the right, briefly occupying the ego lane. Two pedestrians are ahead on the left, walking away and partly in the lane, with one edging toward the center near the cyclist and constraining pace. A white van stands at the curb on the right. A building on the right is under construction with cones and barriers along the curbside.", "hazard_reasoning": "There is a cyclist wearing a green shirt, pulling a green cart, cycling in the middle of the road, from the left side to the right side. The cyclist is moving across your lane and may enter your path, so you should slow down to maintain a safe distance."}
{"id": "train_06467", "split": "train", "clip_key": "titan_clip_30_000084_movie", "source": {"subset": "titan", "scenario": "clip_30", "frame": "000084"}, "frames": ["titan_clip_30_000084_movie_t-3.jpg", "titan_clip_30_000084_movie_t-2.jpg", "titan_clip_30_000084_movie_t-1.jpg", "titan_clip_30_000084_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked van", "environment_perception": "An urban street with close buildings forms a narrow two-way road with a single lane each direction and no median; the pavement is dry and traffic is light. A pedestrian from the right steps onto the zebra crossing and walks left across the ego lane, briefly controlling the vehicle's pace. On the near left corner, three pedestrians wait at the curb by the crosswalk and may enter after the crosser passes. Farther ahead, a white van is parked along the left curb, reportedly stopped for an emergency and away from the ego car, posing no immediate obstruction. No traffic signals are visible at the intersection.", "hazard_reasoning": "There is a white van parked on the left side of the road, away from the ego car, because of emergency. The driver should be aware of the parked van as it may obscure pedestrians or cause unforeseen stops ahead."}
{"id": "train_06468", "split": "train", "clip_key": "titan_clip_1165_000138_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1165_000138_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1165_000138_movie_t-3_augB1.jpg", "titan_clip_1165_000138_movie_t-2_augB1.jpg", "titan_clip_1165_000138_movie_t-1_augB1.jpg", "titan_clip_1165_000138_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "A dense urban commercial street with tall buildings and trees appears smooth and narrow, offering a single central travel lane between curbside parking, and overall traffic is light. Ahead in the middle of the road, a pedestrian wearing a gray shirt and black pants, carrying handbags, crosses from left to right and may enter the ego vehicle's path. Parked white and silver vans line both curbs, including a large van close on the left and another just ahead on the right, which narrows the passage and reduces lateral clearance. Orange cones stand along the right sidewalk, and no prominent signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black pants, carrying handbags, and crossing the street from left to right, in the middle of the road. The pedestrian is entering your path and you should yield to avoid a collision."}
{"id": "train_06469", "split": "train", "clip_key": "titan_clip_508_000582_movie", "source": {"subset": "titan", "scenario": "clip_508", "frame": "000582"}, "frames": ["titan_clip_508_000582_movie_t-3.jpg", "titan_clip_508_000582_movie_t-2.jpg", "titan_clip_508_000582_movie_t-1.jpg", "titan_clip_508_000582_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrians", "environment_perception": "An urban alley-like two-way road without a median runs between buildings, the pavement is smooth, and traffic is light with no oncoming vehicles. On the left edge close ahead, two pedestrians, one wearing blue pants and the other white pants, walk away from the car along the roadway because there is no sidewalk, staying near the travel lane and potentially constraining speed. Farther ahead near the center-left, a small group of pedestrians also walks away in the same direction and may occupy part of the ego lane. On the right side, a white work truck is parked partly in the lane, narrowing the passage.", "hazard_reasoning": "Two pedestrians, one wearing blue pants, the other wearing white pants, walking on the left side of the road, away from the ego car, because of lack of sidewalk. The driver should be cautious because the pedestrians are walking close to the travel lane without a sidewalk, increasing the risk of them stepping into the vehicle path."}
{"id": "train_06470", "split": "train", "clip_key": "2020-0227-104226_107760_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "107760"}, "frames": ["2020-0227-104226_107760_movie_t-3.jpg", "2020-0227-104226_107760_movie_t-2.jpg", "2020-0227-104226_107760_movie_t-1.jpg", "2020-0227-104226_107760_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with smooth pavement has multiple same-direction lanes and a shrub median on the right that separates oncoming traffic; flow appears light to moderate. The ego vehicle follows a white box truck with a red lower bumper directly ahead in the ego lane, which slows because of congestion ahead and sets the pace. A small white van travels just ahead to the left near the curb, moving steadily in its lane and remaining close to the ego vehicle's forward path. Farther ahead to the right, a white car continues in the adjacent lane and gradually pulls away without interacting. No salient traffic signals or hazards are visible.", "hazard_reasoning": "There is a white-and-red truck slowing down in the ego lane, because of traffic congestion ahead. The slowing truck indicates congestion ahead and requires the driver to slow down to maintain a safe following distance."}
{"id": "train_06471", "split": "train", "clip_key": "2020-0228-102841_076822_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "076822"}, "frames": ["2020-0228-102841_076822_movie_t-3.jpg", "2020-0228-102841_076822_movie_t-2.jpg", "2020-0228-102841_076822_movie_t-1.jpg", "2020-0228-102841_076822_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and no physical median appears, and traffic is moderate but queued at an intersection under a red signal. A white van directly ahead in the ego lane is stopped for the red light, holding the ego car. Multiple pedestrians cross the wide crosswalk ahead from left to right across the ego path, and the flow continues while vehicles wait. In the adjacent left lane, a black minivan beside the ego car and a white sedan slightly ahead are stopped or inching toward the line, constraining lateral room. A straight-ahead sign and a no-parking sign stand on the right.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe distance and avoid colliding with the stationary vehicle ahead under the red signal."}
{"id": "train_06472", "split": "train", "clip_key": "2020-0207-101955_002431_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "002431"}, "frames": ["2020-0207-101955_002431_movie_t-3.jpg", "2020-0207-101955_002431_movie_t-2.jpg", "2020-0207-101955_002431_movie_t-1.jpg", "2020-0207-101955_002431_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked black sedan", "environment_perception": "In a dense urban commercial district, the ego vehicle proceeds along a two-lane one-way street with no median and smooth pavement, with moderate traffic moving steadily. A boxy black minivan ahead in the ego lane rolls forward slowly, setting our pace. To its right, a white car continues straight in the adjacent lane at a similar speed without encroaching into our path. A black sedan is parked along the left curb near the crosswalk, slightly narrowing the lane as we pass. Pedestrians are on both sidewalks near the intersection, with a few stopping at the curb and possibly entering the crossing. Small cones and camera equipment sit on the right shoulder but remain outside the travel lanes.", "hazard_reasoning": "There is a black sedan parked on the left side of the road. A parked vehicle at the roadside may restrict lane width and require drivers to adjust their path, so be aware of it to avoid potential collisions."}
{"id": "train_06473", "split": "train", "clip_key": "2020-0205-103411_045773_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "045773"}, "frames": ["2020-0205-103411_045773_movie_t-3.jpg", "2020-0205-103411_045773_movie_t-2.jpg", "2020-0205-103411_045773_movie_t-1.jpg", "2020-0205-103411_045773_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs beneath elevated expressway ramps, approaching a signalized intersection with a fenced median on the right and smooth pavement; traffic is moderate with a short queue. A black hatchback is stopped directly ahead in the ego lane because the light is red, holding the ego vehicle at the line. In the lane to the left, a white van and a bus wait just ahead, also halted by the same signal and forming a small queue that limits progress. Farther ahead through the junction, a small car travels right to left across the intersection on the cross flow and does not enter the ego lane. The traffic signal facing the ego approach shows red beside marked crosswalks.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid a collision at the red signal and maintain safe following distance under these conditions."}
{"id": "train_06474", "split": "train", "clip_key": "2020-0225-145150_009932_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "009932"}, "frames": ["2020-0225-145150_009932_movie_t-3.jpg", "2020-0225-145150_009932_movie_t-2.jpg", "2020-0225-145150_009932_movie_t-1.jpg", "2020-0225-145150_009932_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-way arterial with two lanes per direction has smooth asphalt and no median, and traffic is heavy but stationary at a signalized intersection. The ego car sits in the leftmost lane where a gray minivan directly ahead is stopped with brake lights on because the overhead traffic light ahead is red, holding the ego's progress. In the adjacent right lane, a black boxy car and several others queue alongside, also waiting for the signal. In the opposing lanes on the right side, a gray SUV faces the camera and remains stopped at the light, posing no immediate interaction. Overhead signals show red for our approach.", "hazard_reasoning": "There is a gray minivan stopped in front of the ego car, because of the red traffic light. The minivan has halted at the red signal, so you should stop as well to avoid running the light and risking a collision."}
{"id": "train_06475", "split": "train", "clip_key": "2020-0221-115122_002791_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "002791"}, "frames": ["2020-0221-115122_002791_movie_t-3.jpg", "2020-0221-115122_002791_movie_t-2.jpg", "2020-0221-115122_002791_movie_t-1.jpg", "2020-0221-115122_002791_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial in a dense city center runs straight between tall buildings, with three same-direction lanes and a red-painted left lane on smooth pavement; traffic is moderate to heavy and compresses ahead. A silver sedan directly ahead in the ego lane slows as congestion builds further up the road, constraining the ego car's pace. A gray van in the right lane slightly ahead proceeds straight at a similar speed, limiting an immediate move to the right. A white van to the left alongside creeps forward in its lane, remaining close to the ego vehicle. Overhead guide signs and a pedestrian overpass span the roadway; no signal aspect is visible.", "hazard_reasoning": "There is a silver sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance as the vehicle ahead is reducing speed due to congestion."}
{"id": "train_06476", "split": "train", "clip_key": "titan_clip_1048_000582_movie", "source": {"subset": "titan", "scenario": "clip_1048", "frame": "000582"}, "frames": ["titan_clip_1048_000582_movie_t-3.jpg", "titan_clip_1048_000582_movie_t-2.jpg", "titan_clip_1048_000582_movie_t-1.jpg", "titan_clip_1048_000582_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban back street with a single narrow unmarked carriageway runs between buildings and green railings; the asphalt looks damp and traffic is light with no vehicles moving ahead or oncoming. On the left edge just ahead, a pedestrian wearing a blue hoodie walks away from the ego vehicle along the curb in the same direction, reducing the available passing space. Parked cars in bays on the right remain stationary, together with the railings creating a tight corridor but not obstructing the lane.", "hazard_reasoning": "There is a pedestrian wearing a blue hoodie, walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a potential collision."}
{"id": "train_06477", "split": "train", "clip_key": "2020-0214-102601_071663_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "071663"}, "frames": ["2020-0214-102601_071663_movie_t-3.jpg", "2020-0214-102601_071663_movie_t-2.jpg", "2020-0214-102601_071663_movie_t-1.jpg", "2020-0214-102601_071663_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban multi-lane arterial with two lanes in the ego direction and curbside islands and railings has smooth pavement and moderate, steadily moving traffic approaching a signalized intersection. A black SUV directly ahead in the ego lane starts to move forward and sets the ego car's pace. In the adjacent left lane, a white van slightly ahead continues straight toward the junction and pulls away. Farther ahead near the right side of the roadway, a small silver car proceeds slowly toward the intersection but stays out of the ego path. No pedestrians or cyclists are visible, and there are no obvious hazards.", "hazard_reasoning": "There is a black SUV starting to move in front of the ego car, in the ego lane. The green signal and the movement of the vehicle ahead indicate that traffic is resuming, so the driver should start moving promptly to maintain traffic flow and avoid unnecessary delay."}
{"id": "train_06478", "split": "train", "clip_key": "2020-0226-101332_015331_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "015331"}, "frames": ["2020-0226-101332_015331_movie_t-3.jpg", "2020-0226-101332_015331_movie_t-2.jpg", "2020-0226-101332_015331_movie_t-1.jpg", "2020-0226-101332_015331_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban residential street with tall buildings lines a narrow two-way road with single lanes, white guardrails, a yellow center line, and wet pavement; traffic is light and the oncoming lane is clear nearby. A yellow taxi directly ahead in the ego lane stands still at the intersection because the traffic signal ahead shows red, so the ego vehicle waits behind it. The red light is the only active control in view, and a large 30 speed marking is painted on the roadway.", "hazard_reasoning": "There is a yellow taxi stopped in front of the ego car, because of a red traffic light. The taxi has stopped for the red light, so you should stop to avoid a collision and comply with the signal."}
{"id": "train_06479", "split": "train", "clip_key": "2020-0210-101957_086103_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "086103"}, "frames": ["2020-0210-101957_086103_movie_t-3.jpg", "2020-0210-101957_086103_movie_t-2.jpg", "2020-0210-101957_086103_movie_t-1.jpg", "2020-0210-101957_086103_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each way curves gently right on red asphalt with a solid yellow centerline and small curb islands; pavement looks sound and traffic appears light to moderate. A brown truck directly ahead in the ego lane slows, constraining the ego-car's pace. Two pedestrians on the left sidewalk walk forward near a driveway entrance, staying on the sidewalk as the scene progresses. A cyclist beside them on the left sidewalk rides in the same direction near a curb ramp, remaining off the roadway. A white car approaches in the oncoming lane through the bend and continues past with clear separation. Keep-left bollards on the small island help guide traffic near the side entrance.", "hazard_reasoning": "There is a brown truck slowing in front of the ego-car, in the ego lane. The truck's deceleration creates a collision risk, so the driver should slow down to maintain a safe following distance."}
{"id": "train_06480", "split": "train", "clip_key": "2020-0212-102546_005327_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "005327"}, "frames": ["2020-0212-102546_005327_movie_t-3.jpg", "2020-0212-102546_005327_movie_t-2.jpg", "2020-0212-102546_005327_movie_t-1.jpg", "2020-0212-102546_005327_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban scene shows the ego vehicle approaching a signalized intersection on a narrow two-lane road with a red-painted margin and smooth pavement; traffic is light to moderate, queuing briefly at the junction. A white hatchback directly ahead in the ego lane is stopped because the traffic light is red, holding the ego car. Farther ahead at the stop line, another white car also waits in the same lane. Slightly ahead to the right, a black car sits stationary near the intersection without moving into the ego lane. Multiple pedestrians cross the far crosswalk across the junction, keeping vehicles halted. The signal ahead for the ego direction displays red.", "hazard_reasoning": "There is a white hatchback stopped in ego lane in front of the ego car, because the traffic light is red. Stop to maintain a safe following distance and obey the red signal."}
{"id": "train_06481", "split": "train", "clip_key": "2020-0131-135401_088245_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "088245"}, "frames": ["2020-0131-135401_088245_movie_t-3.jpg", "2020-0131-135401_088245_movie_t-2.jpg", "2020-0131-135401_088245_movie_t-1.jpg", "2020-0131-135401_088245_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego's direction runs between mid-rise buildings, with a concrete barrier on the right separating oncoming traffic; the dry pavement is in good condition and traffic shifts from stopped to moving. Directly ahead in the ego lane, a white van begins to accelerate away as the signal ahead turns green, setting the pace for the restart. Ahead-left in the adjacent lane, a large mixer truck rolls forward slowly, roughly parallel to the van and keeping speeds modest. At the left curb near the ego, a silver hatchback remains stationary, outside the ego's path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06482", "split": "train", "clip_key": "2020-0210-101957_035686_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "035686"}, "frames": ["2020-0210-101957_035686_movie_t-3.jpg", "2020-0210-101957_035686_movie_t-2.jpg", "2020-0210-101957_035686_movie_t-1.jpg", "2020-0210-101957_035686_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way road with good pavement runs beneath an enclosed pedestrian overpass, and a row of red bollards forms the center divider; traffic is heavy with a stopped queue in the ego lane. A black car ahead in the ego lane, described as a mid-SUV, is stopped because of congestion and holds the ego vehicle. On the right, a silver van and other oncoming vehicles pass in the opposite lanes beyond the bollards, separated from the ego path. Farther ahead the line of cars creeps toward an intersection.", "hazard_reasoning": "A black mid-SUV is stopped in front of the ego car in the ego lane, because of traffic congestion. The sudden stop of the leading vehicle requires the driver to stop promptly to prevent a rear-end collision."}
{"id": "train_06483", "split": "train", "clip_key": "2020-0207-101955_017387_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "017387"}, "frames": ["2020-0207-101955_017387_movie_t-3.jpg", "2020-0207-101955_017387_movie_t-2.jpg", "2020-0207-101955_017387_movie_t-1.jpg", "2020-0207-101955_017387_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs straight between tall buildings; the ego car uses the left lane on smooth pavement and traffic is light to moderate with no visible median. A small white truck with a green tarp drives ahead in the ego lane, gradually moving away and effectively setting the pace. To the right, a silver van travels slightly ahead in the adjacent lane, edging left near the crosswalk but continuing alongside without entering the ego lane. Farther ahead in that right lane, a flatbed truck proceeds at a similar speed, forming a parallel line of traffic. An overhead intersection signal is present, and a no right turn sign is posted.", "hazard_reasoning": "There is a white truck with a green tarp, driving in the ego lane, away from the ego car. This truck and the larger one may obstruct the driver's view of the crossing and oncoming traffic, so the driver should exercise caution."}
{"id": "train_06484", "split": "train", "clip_key": "2020-0207-151349_058291_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "058291"}, "frames": ["2020-0207-151349_058291_movie_t-3.jpg", "2020-0207-151349_058291_movie_t-2.jpg", "2020-0207-151349_058291_movie_t-1.jpg", "2020-0207-151349_058291_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with opposing lanes alongside, no physical median, smooth pavement, and heavy stop-and-go flow. A silver sedan directly ahead in the ego lane is stopped because of congestion and holds the ego vehicle. In the right parallel lane, a white minivan slightly ahead creeps forward with the queue and may continue past the ego line. Farther ahead near the middle of the scene, a yellow box truck carrying ladders waits in the jam, contributing to the slowdown. At the right edge, an oncoming dark truck stands still in the opposite lane, separated by painted markings.", "hazard_reasoning": "There is a silver Sedan stopped in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should stop to avoid colliding with this halted vehicle."}
{"id": "train_06485", "split": "train", "clip_key": "titan_clip_1117_000222_movie", "source": {"subset": "titan", "scenario": "clip_1117", "frame": "000222"}, "frames": ["titan_clip_1117_000222_movie_t-3.jpg", "titan_clip_1117_000222_movie_t-2.jpg", "titan_clip_1117_000222_movie_t-1.jpg", "titan_clip_1117_000222_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban commercial street appears, a very narrow single-lane road without a median, bordered by bollards, with smooth pavement and light traffic. A white box truck is stopped on the left just ahead with its rear doors open, unloading goods, and it occupies part of the lane, narrowing the passage. A worker at the truck's rear crouches among boxes and a handcart at the roadway edge, handling packages and potentially stepping into the lane. Several pedestrians ahead and to the right walk along the sidewalk and near the curb, some edging toward the roadway and affecting how cautiously the ego vehicle can pass.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is unloading. It narrows the roadway and blocks sightlines, so the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_06486", "split": "train", "clip_key": "2020-0217-144444_006082_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "006082"}, "frames": ["2020-0217-144444_006082_movie_t-3.jpg", "2020-0217-144444_006082_movie_t-2.jpg", "2020-0217-144444_006082_movie_t-1.jpg", "2020-0217-144444_006082_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of lane-changing vehicle", "environment_perception": "An urban arterial with several same-direction lanes curves gently left, bordered by sidewalks and guardrails, with dry pavement and moderate, steadily moving traffic and no physical median. A yellow sedan ahead to the left moves right to change into the ego lane as the ego lane is clear, briefly reducing the headway in front of the ego vehicle. A black minivan in the lane to the right of the ego vehicle continues straight at a slightly higher speed, remaining parallel. Farther ahead, another car in the ego lane travels steadily and sets the pace toward the junction with overhead traffic signals visible.", "hazard_reasoning": "There is a yellow sedan lane changing in front of the ego car, from the left lane to the ego lane, because the ego lane is clear. The driver should be aware of this lane change to adjust speed or steering and maintain a safe distance."}
{"id": "train_06487", "split": "train", "clip_key": "2020-0218-103119_051153_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "051153"}, "frames": ["2020-0218-103119_051153_movie_t-3.jpg", "2020-0218-103119_051153_movie_t-2.jpg", "2020-0218-103119_051153_movie_t-1.jpg", "2020-0218-103119_051153_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban signalized intersection on a multi-lane two-way road with smooth asphalt and no physical median is shown, with moderate traffic beginning to flow through the junction. A large white cargo truck directly ahead in the ego lane accelerates away as the signal is green, temporarily setting the ego vehicle's pace. A white van in the lane to the left advances alongside just behind the truck, running parallel without affecting the ego lane. To the right, a gray car in the right-turn lane proceeds right through the intersection and diverges from the ego path. Several pedestrians wait at the far-side corners near the crosswalk.", "hazard_reasoning": "There is a white truck driving away from the ego car, in the ego lane, because the traffic light is green. You can start moving now as the green signal grants you the right of way."}
{"id": "train_06488", "split": "train", "clip_key": "titan_clip_866_000582_movie", "source": {"subset": "titan", "scenario": "clip_866", "frame": "000582"}, "frames": ["titan_clip_866_000582_movie_t-3.jpg", "titan_clip_866_000582_movie_t-2.jpg", "titan_clip_866_000582_movie_t-1.jpg", "titan_clip_866_000582_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban two-way street with one lane each direction runs between buildings, the pavement is smooth, and traffic is light. A person wearing a cap and a white T-shirt cycles ahead along the left curb in the ego lane, moving away slowly and constraining the ego vehicle's speed. On the right in the oncoming lane, a white truck faces the camera while stopped at the curb, narrowing that side but not entering the ego path. Farther ahead on the right, another oncoming vehicle waits behind the truck. The number 40 is painted on the roadway, and bicycles are parked along the left sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a cap and a white t-shirt, cycling on the left side of the road, away from the ego car. The cyclist's presence in the travel lane requires careful manoeuvring to maintain safe clearance."}
{"id": "train_06489", "split": "train", "clip_key": "2020-0227-153144_044342_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "044342"}, "frames": ["2020-0227-153144_044342_movie_t-3.jpg", "2020-0227-153144_044342_movie_t-2.jpg", "2020-0227-153144_044342_movie_t-1.jpg", "2020-0227-153144_044342_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with two-way traffic runs between shops and offices, with dry, well-marked pavement and no physical median; overall flow is moderate, with oncoming lanes to the right. A white van directly ahead in the ego lane slows as it nears queued traffic and constrains the ego vehicle's pace. To the right, a silver van in the oncoming lanes approaches steadily within its lane and passes opposite without deviating. Farther right, a red minivan follows the same oncoming stream and continues straight. An overhead directional sign spans the roadway ahead, and a curbside railing and trees line the left sidewalk.", "hazard_reasoning": "There is a white van slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The van's deceleration signals upcoming congestion, so the driver should slow down to maintain a safe following distance."}
{"id": "train_06490", "split": "train", "clip_key": "2020-0226-140503_062703_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "062703"}, "frames": ["2020-0226-140503_062703_movie_t-3.jpg", "2020-0226-140503_062703_movie_t-2.jpg", "2020-0226-140503_062703_movie_t-1.jpg", "2020-0226-140503_062703_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows a slightly downhill two-lane road in the same direction, bordered by a fence and curb on the left and a planted barrier beside tall office buildings on the right. The asphalt appears worn and damp, and traffic is light with no vehicles ahead in either lane. A single pedestrian on the right sidewalk walks in the same direction near the guardrail, remaining off the carriageway and posing no immediate interaction. The road curves gently left toward a denser cityscape, with no clearly visible signals or speed signs.", "hazard_reasoning": "Since there are no visible hazards or obstacles in the scene, the driver can maintain speed and continue driving normally."}
{"id": "train_06491", "split": "train", "clip_key": "2020-0129-144857_075136_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "075136"}, "frames": ["2020-0129-144857_075136_movie_t-3.jpg", "2020-0129-144857_075136_movie_t-2.jpg", "2020-0129-144857_075136_movie_t-1.jpg", "2020-0129-144857_075136_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with multiple same-direction lanes is divided from oncoming traffic by a metal guardrail on the right, the dry pavement carrying heavy stop-and-go flow that begins to creep forward. A white sedan directly ahead in the ego lane moves off from a standstill as the queue advances, setting the ego vehicle's pace. In the adjacent left lane, a white hatchback slightly ahead edges forward parallel to the ego path, remaining closely alongside. Farther ahead across the lanes, a large box truck rolls slowly and contributes to the congestion. Oncoming vehicles beyond the guardrail continue separately with no interaction.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06492", "split": "train", "clip_key": "2020-0217-110854_001739_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "001739"}, "frames": ["2020-0217-110854_001739_movie_t-3.jpg", "2020-0217-110854_001739_movie_t-2.jpg", "2020-0217-110854_001739_movie_t-1.jpg", "2020-0217-110854_001739_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way shopping street with single narrow lanes and no median appears, the pavement dry and slightly worn, and traffic heavy with a slow queue ahead. A red scooter directly ahead in the ego lane slows to a crawl because of congestion ahead, keeping the ego car at its pace. Farther ahead in the same lane, a white sedan is nearly stopped in the line, forming the bottleneck. A large delivery truck at the left curb just beyond the scooter stands partially intruding into the lane, narrowing the passage and adding to the slowdown.", "hazard_reasoning": "There is a red scooter slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Slow down to maintain a safe distance and respond to the reduced speed of the scooter."}
{"id": "train_06493", "split": "train", "clip_key": "2020-0203-154554_067856_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "067856"}, "frames": ["2020-0203-154554_067856_movie_t-3.jpg", "2020-0203-154554_067856_movie_t-2.jpg", "2020-0203-154554_067856_movie_t-1.jpg", "2020-0203-154554_067856_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "An urban two-way arterial with one lane per direction and a chevron-painted median runs straight on dry pavement; traffic is moderate, oncoming flow steady, and the low sun ahead creates glare. A white motorcycle directly ahead in the ego lane accelerates away as the line ahead begins to move, opening a gap from the ego car. Farther ahead in the same lane, a small red car moves off from a crawl and sets the pace for the motorcycle. At the left curb just ahead, a white van stands close to the lane edge with brake lights on near the ego vehicle's path.", "hazard_reasoning": "There is a white motorcycle accelerating in the ego lane, away from the ego car, because the traffic ahead is moving. The motorcycle's rapid acceleration could catch the driver off guard if the vehicle remains stationary, so the driver should start moving to maintain safe traffic flow."}
{"id": "train_06494", "split": "train", "clip_key": "2020-0207-101955_018057_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_018057_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_018057_movie_t-3_augB1.jpg", "2020-0207-101955_018057_movie_t-2_augB1.jpg", "2020-0207-101955_018057_movie_t-1_augB1.jpg", "2020-0207-101955_018057_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction and a painted double center line runs between mid-rise buildings; the pavement is dry and smooth and traffic is moderate with steady flow. Directly ahead in the ego lane, a small brown canvas-covered truck slows and constrains the ego car's pace. In the adjacent left lane, a large silver box truck travels alongside and then edges ahead while staying clear of the ego path. Farther ahead in the same direction, a flatbed truck carrying machinery moves slowly and contributes to the queue. On the right, oncoming vehicles flow in their lanes without encroaching.", "hazard_reasoning": "There is a brown truck slowing down in front of the ego car. This slowdown indicates that the vehicle ahead is reducing speed, so the driver should slow down to maintain a safe following distance and avoid potential rear-end collision."}
{"id": "train_06495", "split": "train", "clip_key": "2020-0127-132751_039192_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "039192"}, "frames": ["2020-0127-132751_039192_movie_t-3.jpg", "2020-0127-132751_039192_movie_t-2.jpg", "2020-0127-132751_039192_movie_t-1.jpg", "2020-0127-132751_039192_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated two-way road with two lanes per direction runs between noise barriers, the asphalt is smooth, and traffic is light to moderate as the roadway climbs toward a blind crest. A small dark car ahead in our lane travels steadily uphill, setting our following distance. A white hatchback in the adjacent left lane runs parallel just to the left and slightly ahead, limiting a lane change left. In the opposite lanes to the right, several oncoming vehicles, including a large yellow truck, approach near the centerline while keeping to their side.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06496", "split": "train", "clip_key": "2020-0131-135401_011738_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "011738"}, "frames": ["2020-0131-135401_011738_movie_t-3.jpg", "2020-0131-135401_011738_movie_t-2.jpg", "2020-0131-135401_011738_movie_t-1.jpg", "2020-0131-135401_011738_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-lane road with a solid yellow centerline runs straight between midrise buildings; the dry pavement looks smooth and traffic appears light to moderate. Immediately ahead a white dump truck in the ego lane is stopped at the line by a red traffic signal, holding the ego vehicle's pace. To the right, an oncoming black car approaches in its lane and continues past the intersection without interacting with the ego path. Overhead signals facing the ego direction show red, and a narrow bicycle lane along the left curb remains clear.", "hazard_reasoning": "There is a white truck stopped in the ego lane, because of a red traffic light. You should stop to avoid colliding with the halted vehicle under the red signal."}
{"id": "train_06497", "split": "train", "clip_key": "titan_clip_753_000444_movie", "source": {"subset": "titan", "scenario": "clip_753", "frame": "000444"}, "frames": ["titan_clip_753_000444_movie_t-3.jpg", "titan_clip_753_000444_movie_t-2.jpg", "titan_clip_753_000444_movie_t-1.jpg", "titan_clip_753_000444_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "A narrow urban back street runs between buildings with a single marked lane, no median, smooth pavement, and light traffic. On the right edge just ahead, a pedestrian in a striped shirt and blue shorts pushes a blue cart away from the camera along the curb directly in front of the ego-vehicle, occupying part of the lane and setting the pace. Farther ahead near the junction, a small red van stands on the right side of the roadway, narrowing the path. Another pedestrian is visible farther ahead on the left sidewalk, continuing away. A pedestrian crossing sign is posted on a pole at the left.", "hazard_reasoning": "There is a pedestrian in a striped shirt, blue shorts and pushing a blue cart, walking in front of and away from the ego-car. The pedestrian is walking ahead of the vehicle and may alter their path, so the driver should carefully manoeuvre around them."}
{"id": "train_06498", "split": "train", "clip_key": "titan_clip_419_000294_movie", "source": {"subset": "titan", "scenario": "clip_419", "frame": "000294"}, "frames": ["titan_clip_419_000294_movie_t-3.jpg", "titan_clip_419_000294_movie_t-2.jpg", "titan_clip_419_000294_movie_t-1.jpg", "titan_clip_419_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shared street with stone-paved surface and no marked lanes runs between low-rise buildings and trees; the pavement is smooth and traffic is light, limited to pedestrians as the ego vehicle proceeds straight. On the left edge ahead, a pedestrian in a blue shirt and gray pants using a walking stick walks toward the ego car along the side and may step into the path. In the center ahead, another pedestrian heads toward the vehicle in the lane, constraining the pace. On the right ahead, two pedestrians move along the curbside in the same direction and keep to the edge. A black car is parked off to the right behind trees.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, gray pants, and using a walking stick, walking at the left side of the road, toward the ego car. The driver should carefully manoeuvre around the pedestrian because they may have limited mobility and are close to the vehicle's path."}
{"id": "train_06499", "split": "train", "clip_key": "2020-0213-143552_049042_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "049042"}, "frames": ["2020-0213-143552_049042_movie_t-3.jpg", "2020-0213-143552_049042_movie_t-2.jpg", "2020-0213-143552_049042_movie_t-1.jpg", "2020-0213-143552_049042_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single lane in each direction runs past mid-rise buildings; the pavement is smooth and a small raised median splits a zebra crossing, with light flow in the ego direction and a queued oncoming line. A white box truck ahead in the ego lane slows toward the crosswalk, constraining the ego car's pace. To the right beyond the median, a blue hatchback in the opposing lane waits at the intersection angled for a right turn that would cross the ego lane. Farther along that oncoming side, several vans and cars remain stopped in line. A signalized intersection is visible above the crossing.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The truck's deceleration may require the ego vehicle to reduce speed promptly to maintain a safe following distance and avoid a collision."}
{"id": "train_06500", "split": "train", "clip_key": "2020-0131-135401_022664_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "022664"}, "frames": ["2020-0131-135401_022664_movie_t-3.jpg", "2020-0131-135401_022664_movie_t-2.jpg", "2020-0131-135401_022664_movie_t-1.jpg", "2020-0131-135401_022664_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street between mid-rise buildings curves gently right, with one lane per direction, no median, smooth pavement, and light traffic. A black van ahead in the ego lane moves away as the flow progresses, opening distance. Farther ahead in the same lane a small car continues forward without affecting the ego vehicle's pace. On the opposite side, several trucks and a small van stand along the right curb facing the ego vehicle, occupying the oncoming side but remaining stationary and outside the ego path. Construction cones and barricades line the left edge near the sidewalk, indicating roadside work while the travel lane stays clear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06501", "split": "train", "clip_key": "titan_clip_760_000588_movie", "source": {"subset": "titan", "scenario": "clip_760", "frame": "000588"}, "frames": ["titan_clip_760_000588_movie_t-3.jpg", "titan_clip_760_000588_movie_t-2.jpg", "titan_clip_760_000588_movie_t-1.jpg", "titan_clip_760_000588_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane in each direction has smooth pavement and no median; vehicle traffic is light while pedestrian flow at a marked crosswalk is heavy. Ahead at the zebra, a pedestrian in orange shorts accompanied by a child crosses from the left to the right across the ego lane, constraining the vehicle's pace. Other pedestrians move across in both directions directly in front of the camera, occupying the lane. A white van stands at the left curb beside the crosswalk, and several people linger near the right curb by bollards. The crosswalk markings are clearly visible.", "hazard_reasoning": "There is a pedestrian with a child and wearing orange shorts, crossing to the right side of the road at the crosswalk. The pedestrian and child are vulnerable road users in the vehicle's path, so the driver should slow down to avoid a collision."}
{"id": "train_06502", "split": "train", "clip_key": "2020-0129-144857_033260_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "033260"}, "frames": ["2020-0129-144857_033260_movie_t-3.jpg", "2020-0129-144857_033260_movie_t-2.jpg", "2020-0129-144857_033260_movie_t-1.jpg", "2020-0129-144857_033260_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs under an elevated structure with two same-direction lanes; the right lane is bordered by a guardrail and the pavement looks smooth as traffic moves slowly in heavy flow. A black van directly ahead in the ego lane decelerates because vehicles are queuing ahead, constraining the ego car's pace. In the adjacent left lane, a large truck travels alongside slightly ahead, limiting any chance to merge. Farther ahead in the ego lane, a box truck proceeds slowly, reinforcing the congestion. The corridor narrows along the right guardrail and columns but remains clear of obstacles.", "hazard_reasoning": "There is a black van slowing in in the ego lane, in front of the ego car because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision due to the van's reduced speed."}
{"id": "train_06503", "split": "train", "clip_key": "2020-0204-103442_023826_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "023826"}, "frames": ["2020-0204-103442_023826_movie_t-3.jpg", "2020-0204-103442_023826_movie_t-2.jpg", "2020-0204-103442_023826_movie_t-1.jpg", "2020-0204-103442_023826_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban multilane intersection under an elevated expressway comes into view, with smooth pavement and moderate traffic; the ego approach is halted at a red signal while perpendicular traffic flows. A white SUV directly ahead in the ego lane is stopped at the line because of the red traffic light, holding our pace. In the adjacent left lane, a small utility truck stands slightly ahead, also waiting at the light and partly blocking left-side sight lines. Across the junction, several cars including a taxi move right-to-left through the crossing, proceeding under their green and remaining outside the ego path.", "hazard_reasoning": "There is a white SUV stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver must stop to avoid a collision with the stationary vehicle and comply with the traffic signal."}
{"id": "train_06504", "split": "train", "clip_key": "titan_clip_1209_000144_movie", "source": {"subset": "titan", "scenario": "clip_1209", "frame": "000144"}, "frames": ["titan_clip_1209_000144_movie_t-3.jpg", "titan_clip_1209_000144_movie_t-2.jpg", "titan_clip_1209_000144_movie_t-1.jpg", "titan_clip_1209_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A dense urban shopping street with a single narrow shared lane is paved with bricks and lacks a divider; vehicle movement is light and slow due to many pedestrians. Ahead in the center, several pedestrians walk diagonally from right to left across the ego lane, constraining progress. On the left edge beside a parked white flatbed, a pedestrian wearing white pants and a pink shirt with a backpack walks away from the ego car along the curb because the vehicle blocks the walkway. Near the same truck, a worker stands at the crosswalk close to the lane edge, narrowing the passage. Farther ahead along the right curb, another small truck is parked while people walk past it, tightening the corridor but not entering the lane.", "hazard_reasoning": "There is a pedestrian wearing white pants, and a pink shirt, carrying a backpack and walking away from the ego car on the left side of the road because of a parked vehicle. The parked trucks partially obstruct the driver's view of the pedestrian, so the driver should manoeuvre carefully around the pedestrian to avoid a collision."}
{"id": "train_06505", "split": "train", "clip_key": "2020-0207-151349_086957_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "086957"}, "frames": ["2020-0207-151349_086957_movie_t-3.jpg", "2020-0207-151349_086957_movie_t-2.jpg", "2020-0207-151349_086957_movie_t-1.jpg", "2020-0207-151349_086957_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban road runs beneath an elevated expressway, with the ego traveling in a single left-side lane separated by guardrails from a parallel carriageway; the pavement is clean and dry and traffic is light. No vehicle is in the ego lane ahead, while a few cars move along the adjacent right-side carriageway behind the guardrail, continuing parallel without affecting the ego's path. Large Japanese lane markings with a forward arrow indicate a reserved or priority lane. Concrete columns of the viaduct and continuous guardrails line the center and right, narrowing sightlines but leaving the roadway clear.", "hazard_reasoning": "No potential hazards are visible; the driver can safely maintain current speed and lane position."}
{"id": "train_06506", "split": "train", "clip_key": "titan_clip_653_000132_movie", "source": {"subset": "titan", "scenario": "clip_653", "frame": "000132"}, "frames": ["titan_clip_653_000132_movie_t-3.jpg", "titan_clip_653_000132_movie_t-2.jpg", "titan_clip_653_000132_movie_t-1.jpg", "titan_clip_653_000132_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the parked motorcycle", "environment_perception": "An urban neighborhood street ascends gently with a single narrow lane and no centerline, smooth pavement, and very light traffic with no moving vehicles visible. A black and white motorcycle is parked along the left curb ahead in the ego lane, partially narrowing the usable lane. On the right sidewalk near the camera, two pedestrians walk toward the camera beside the buildings, remaining on the sidewalk. Farther ahead on the right, another pedestrian walks uphill beside a line of bollards, staying behind the curb. No traffic signals or signs are salient.", "hazard_reasoning": "There is a black and white motorcycle parked on the left side of the road, in the ego lane. The parked motorcycle obstructs the ego lane and requires careful manoeuvring to avoid collision aligned with the suggested warning."}
{"id": "train_06507", "split": "train", "clip_key": "titan_clip_455_000042_movie", "source": {"subset": "titan", "scenario": "clip_455", "frame": "000042"}, "frames": ["titan_clip_455_000042_movie_t-3.jpg", "titan_clip_455_000042_movie_t-2.jpg", "titan_clip_455_000042_movie_t-1.jpg", "titan_clip_455_000042_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist in roadway", "environment_perception": "A narrow urban street with cobblestone pavement and no centerline runs between low-rise buildings, with light, slow traffic and no median. Ahead, a cyclist in a red jacket rides away in the middle of the road, displaced from the left by a parked car and potentially constraining the ego vehicle's pace. Farther ahead slightly left, a small box truck is stopped with its rear toward the ego lane, narrowing the passage and influencing the cyclist's path. On the right, a pedestrian walks along the sidewalk near shopfronts without entering the roadway. A black sedan stands on the left edge partly in the lane, and additional curbside parking and loading further reduce the available width.", "hazard_reasoning": "There is a cyclist wearing a red jacket cycling in the middle of the road away from the ego car because of the parked vehicle on the left. The driver should be aware of the cyclist's position to avoid a potential collision."}
{"id": "train_06508", "split": "train", "clip_key": "2020-0213-143552_031388_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_031388_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_031388_movie_t-3_augB1.jpg", "2020-0213-143552_031388_movie_t-2_augB1.jpg", "2020-0213-143552_031388_movie_t-1_augB1.jpg", "2020-0213-143552_031388_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing.", "environment_perception": "An urban two-way street with one narrow lane per direction and no median stretches ahead; the pavement is smooth and traffic is light with no moving vehicles close to the ego car. A pedestrian in a black suit is ahead, crossing mid-road from the left side to the right side across the ego lane, directly affecting the vehicle's path. At the near zebra crossing, another pedestrian steps from the left curb toward the right, also moving into the ego lane. Farther ahead, several pedestrians walk along the right sidewalk and one crosses at a distant crosswalk, remaining well ahead. A blue pedestrian crossing sign is clearly visible, and no traffic signals appear. Cones and fencing mark a small work area along the left sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a black suit, crossing the street in the middle of the road, from the left side to the right side. The driver should yield because the pedestrian is entering the vehicle's path and could be struck if not given right of way."}
{"id": "train_06509", "split": "train", "clip_key": "2020-0210-142719_006479_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "006479"}, "frames": ["2020-0210-142719_006479_movie_t-3.jpg", "2020-0210-142719_006479_movie_t-2.jpg", "2020-0210-142719_006479_movie_t-1.jpg", "2020-0210-142719_006479_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "An urban two-way street with one lane each way and no median runs between mid-rise buildings; the ego approaches an intersection with a marked crosswalk on dry, slightly cracked pavement, and traffic is light. A pedestrian in a pink coat and red pants walks from right to left across the crosswalk directly ahead, occupying the ego lane. On the far right corner, two bicyclists ride onto the crosswalk and head left across the intersection, following behind the pedestrian and nearing the ego lane. Farther ahead in the intersection, a small scooter travels along the cross street without affecting the ego path.", "hazard_reasoning": "There is a pedestrian wearing a pink coat and red pants, and walking across a crosswalk from right to left. You should yield to the pedestrian because they are crossing directly ahead at a marked crosswalk."}
{"id": "train_06510", "split": "train", "clip_key": "titan_clip_1159_000180_movie", "source": {"subset": "titan", "scenario": "clip_1159", "frame": "000180"}, "frames": ["titan_clip_1159_000180_movie_t-3.jpg", "titan_clip_1159_000180_movie_t-2.jpg", "titan_clip_1159_000180_movie_t-1.jpg", "titan_clip_1159_000180_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban setting features a narrow two-way street without a centerline and smooth pavement, with very light traffic throughout. The ego vehicle continues along the left side with clear sight down the straight block. A pedestrian from the left curb in the near foreground steps into the roadway and walks rightward across the ego path, constraining pace. Farther ahead on the right curb, a brown truck is parked, narrowing the lane at that point. Additional pedestrians remain on the sidewalks, and no oncoming or same-direction vehicles are moving.", "hazard_reasoning": "There is a brown truck parked on the right side of the road. It partially obstructs the lane, so the driver should carefully manoeuvre around it to avoid a collision."}
{"id": "train_06511", "split": "train", "clip_key": "2020-0129-105040_039108_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "039108"}, "frames": ["2020-0129-105040_039108_movie_t-3.jpg", "2020-0129-105040_039108_movie_t-2.jpg", "2020-0129-105040_039108_movie_t-1.jpg", "2020-0129-105040_039108_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene under an elevated expressway shows a single-lane left-side roadway with guardrails on both sides and a gentle right curve; the pavement is smooth and dry and traffic is light. A motorcycle rides ahead near the lane center at moderate speed, directly in the ego path and setting the pace. Farther ahead, a black hatchback proceeds in the same lane, maintaining a steady gap. On the parallel lane to the left, a small truck travels in the same direction behind another vehicle, separated by a barrier so it does not interact. A prohibitory sign on the left bans bicycles on this roadway. Sound barriers and supporting columns on the right constrict sight lines through the curve.", "hazard_reasoning": "No immediate hazards or vulnerable road-users are present; traffic is flowing normally and the roadway is clear, so no warning is required."}
{"id": "train_06512", "split": "train", "clip_key": "titan_clip_716_000162_movie", "source": {"subset": "titan", "scenario": "clip_716", "frame": "000162"}, "frames": ["titan_clip_716_000162_movie_t-3.jpg", "titan_clip_716_000162_movie_t-2.jpg", "titan_clip_716_000162_movie_t-1.jpg", "titan_clip_716_000162_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing ahead", "environment_perception": "An urban back street with a narrow two-way carriageway and no center line runs between shops; the pavement looks worn and traffic is light. Ahead, a pedestrian in a blue shirt holding a cane crosses mid-block from right to left across the ego lane. Farther ahead in the center, an oncoming cyclist rides toward the camera, approaching the crossing area. Near the right foreground, another pedestrian in a white shirt walks along the green-railed edge, staying out of the lane. A blue no-parking sign stands on the left. Cones, parked bicycles, and bagged trash line the curbs, slightly narrowing the roadway.", "hazard_reasoning": "A pedestrian in a blue shirt, holding a cane and crossing the street in the middle of the road from the right side to the left side. The driver should be aware of this pedestrian as they may enter the lane unexpectedly."}
{"id": "train_06513", "split": "train", "clip_key": "2020-0227-104226_058731_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "058731"}, "frames": ["2020-0227-104226_058731_movie_t-3.jpg", "2020-0227-104226_058731_movie_t-2.jpg", "2020-0227-104226_058731_movie_t-1.jpg", "2020-0227-104226_058731_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "A suburban two-way street with one lane each direction and a solid centerline has smooth pavement and briefly queued flow near a signalized intersection ahead. A blue sedan directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. Farther ahead in the same lane, a large bus waits near the intersection, creating the backlog. A parked car sits along the left curb close to the ego lane but remains outside the travel way. Overhead traffic signals and local shop signs are visible at the intersection.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Stop immediately to avoid a rear-end collision with the halted vehicle."}
{"id": "train_06514", "split": "train", "clip_key": "titan_clip_99_000234_movie", "source": {"subset": "titan", "scenario": "clip_99", "frame": "000234"}, "frames": ["titan_clip_99_000234_movie_t-3.jpg", "titan_clip_99_000234_movie_t-2.jpg", "titan_clip_99_000234_movie_t-1.jpg", "titan_clip_99_000234_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision", "environment_perception": "An urban commercial two-way street with one narrow lane per direction and no median, the pavement is smooth and traffic is light. The ego travels in the left lane while the right oncoming lane is clear. A gray van directly ahead in the ego lane slows, constraining the ego car. A flatbed truck is parked along the left side partly jutting into the lane, narrowing the passage. Pedestrians stand near the curb on the right by cones and parked bicycles but remain on the sidewalk.", "hazard_reasoning": "There is a gray van slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a potential collision."}
{"id": "train_06515", "split": "train", "clip_key": "titan_clip_691_000108_movie", "source": {"subset": "titan", "scenario": "clip_691", "frame": "000108"}, "frames": ["titan_clip_691_000108_movie_t-3.jpg", "titan_clip_691_000108_movie_t-2.jpg", "titan_clip_691_000108_movie_t-1.jpg", "titan_clip_691_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban back street with a narrow two-way carriageway lacks a marked centerline, the asphalt looks smooth, and traffic is light with no moving vehicles. Several white vans are parked along the left curb, narrowing the lane for the ego car. Ahead on the right edge, two pedestrians walk together away from the ego vehicle along the roadway, staying close to the buildings and potentially constraining its pace. Farther ahead near the middle of the lane, another pedestrian moves leftward across the street and may enter the ego car's path.", "hazard_reasoning": "There are two pedestrians walking together on the right side of the road, away from the ego car. They may step into the lane unexpectedly, so the driver should slow down to maintain a safe following distance."}
{"id": "train_06516", "split": "train", "clip_key": "titan_clip_1280_000474_movie", "source": {"subset": "titan", "scenario": "clip_1280", "frame": "000474"}, "frames": ["titan_clip_1280_000474_movie_t-3.jpg", "titan_clip_1280_000474_movie_t-2.jpg", "titan_clip_1280_000474_movie_t-1.jpg", "titan_clip_1280_000474_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "An urban street with two same-direction lanes and no median runs straight between mid-rise buildings; pavement is smooth and traffic is light, with merge arrows showing the right lane ends ahead. A white truck is parked along the left curb ahead because it is being unloaded, narrowing the left edge of the travel lane and possibly affecting the ego vehicle's path. Pedestrians on the left sidewalk walk past the truck, while another person stands by orange cones at the right curb, all remaining off the roadway. Far ahead, a small car travels in the same direction near the center. A no-stopping sign is visible on a pole to the left, and no other hazards appear.", "hazard_reasoning": "There is a white truck parked on the left side of the road because it is being unloaded. The parked truck encroaches on the driving lane and requires the driver to manoeuvre to safely pass."}
{"id": "train_06517", "split": "train", "clip_key": "2020-0213-143552_023871_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "023871"}, "frames": ["2020-0213-143552_023871_movie_t-3.jpg", "2020-0213-143552_023871_movie_t-2.jpg", "2020-0213-143552_023871_movie_t-1.jpg", "2020-0213-143552_023871_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop at the red light.", "environment_perception": "An urban signalized multi-lane intersection with smooth pavement and no median; our approach is stopped at a red light while cross traffic and heavy foot and bicycle flow traverse the crosswalks. A black motorcycle waits directly ahead in the ego lane near the stop line because the light is red, holding our position. Numerous pedestrians walk across the intersection in front of us from both sides, continuing through the crosswalk and occupying the path we will take when green. Two cyclists ride across from right to left in front of the motorcycle within the crosswalk, proceeding with the pedestrian phase.", "hazard_reasoning": "There is a black motorcycle stopped near the intersection, in the ego-lane, because of the red traffic light. The motorcycle's complete stop ahead indicates the driver must halt to avoid a rear-end collision and comply with the red signal."}
{"id": "train_06518", "split": "train", "clip_key": "2020-0226-101332_048346_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "048346"}, "frames": ["2020-0226-101332_048346_movie_t-3.jpg", "2020-0226-101332_048346_movie_t-2.jpg", "2020-0226-101332_048346_movie_t-1.jpg", "2020-0226-101332_048346_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection with only painted lane divisions and worn but serviceable pavement; traffic is moderate. The signals facing the ego direction show green as the vehicle continues straight, and cones and barriers mark a small work area along the far-right curb beyond the junction. A green hatchback directly ahead in the ego lane moves slowly toward the intersection, constraining our speed. In the left curb lane, a large city bus waits at a stop beside our lane and may merge ahead. In the opposing lanes to the right, a white van and several cars proceed through the intersection toward us, clearly separated from our path.", "hazard_reasoning": "There are no immediate hazards present; traffic is orderly and visibility is good, so the driver can proceed normally."}
{"id": "train_06519", "split": "train", "clip_key": "2020-0204-150838_069980_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "069980"}, "frames": ["2020-0204-150838_069980_movie_t-3.jpg", "2020-0204-150838_069980_movie_t-2.jpg", "2020-0204-150838_069980_movie_t-1.jpg", "2020-0204-150838_069980_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with concrete barriers on both sides carries two same-direction lanes, with the right lane tapering into a chevron-marked shoulder; the pavement is smooth and traffic is very light with no oncoming flow visible on this divided road. A black truck travels ahead in the ego lane and gradually pulls away, remaining centered in the lane and loosely setting the pace. No other vehicles are nearby to merge from the right where the lane ends. Overhead gantry signs and lighting poles line the route, and no signals or unusual hazards appear during the short sequence.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06520", "split": "train", "clip_key": "titan_clip_326_000102_movie", "source": {"subset": "titan", "scenario": "clip_326", "frame": "000102"}, "frames": ["titan_clip_326_000102_movie_t-3.jpg", "titan_clip_326_000102_movie_t-2.jpg", "titan_clip_326_000102_movie_t-1.jpg", "titan_clip_326_000102_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of approaching pedestrians", "environment_perception": "An urban alley intersection comes into view as the ego car approaches a narrow single-lane street between tall buildings, with cobblestone at the junction and worn asphalt ahead; traffic is light and no vehicles appear. Ahead in the alley, a small group of pedestrians walks toward the intersection, and two wearing black pants, white shirts, and carrying handbags approach directly toward the ego car and may enter its path. On the right corner, a woman stands at the curb near the building, close to the edge of the roadway and within the ego lane. Along the left wall, another pedestrian walks toward the camera while keeping to the side and leaving the center clear. A convex safety mirror and a pedestrian sign are mounted on the left building at the junction.", "hazard_reasoning": "Two pedestrians wearing black pants, a white shirt, and a handbag are approaching the intersection, toward the ego car. The pedestrians are moving toward the vehicle's path at an intersection, requiring the driver to be cautious to avoid a potential collision."}
{"id": "train_06521", "split": "train", "clip_key": "2020-0220-151845_046968_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "046968"}, "frames": ["2020-0220-151845_046968_movie_t-3.jpg", "2020-0220-151845_046968_movie_t-2.jpg", "2020-0220-151845_046968_movie_t-1.jpg", "2020-0220-151845_046968_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs under an elevated structure with two same-direction lanes; a narrow raised divider separates the left lane, and a guardrail lines the right edge. The pavement looks wet and traffic is slow to heavy. Ahead in the ego lane, a red truck with a tarped load slows and brakes due to congestion ahead, limiting the ego vehicle's speed. To the left, a yellow coach bus in the adjacent lane creeps forward parallel to the ego lane, remaining behind the divider and not merging. Ahead-right, a motorcycle advances along the right lane by the guardrail and slips past the truck, possibly moving toward the gap ahead. Overhead direction signs point toward the E20 Chuo Expressway.", "hazard_reasoning": "There is a red truck slowing in the ego lane in front of the ego car, due to traffic congestion ahead. The slowdown indicates dense traffic ahead, so the driver should reduce speed to maintain a safe following distance."}
{"id": "train_06522", "split": "train", "clip_key": "titan_clip_817_000342_movie", "source": {"subset": "titan", "scenario": "clip_817", "frame": "000342"}, "frames": ["titan_clip_817_000342_movie_t-3.jpg", "titan_clip_817_000342_movie_t-2.jpg", "titan_clip_817_000342_movie_t-1.jpg", "titan_clip_817_000342_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian moving into lane", "environment_perception": "An urban two-way street with one narrow lane each direction, no median, and smooth pavement shows very light traffic. Buildings closely flank the roadway, with vending machines and trash bins at the right curb. On the right curb near the vending machines, a man in khaki trousers, a short-sleeved shirt, black shoes, and a green cap puts litter in a bin and walks toward the ego lane, potentially stepping into the path. Farther ahead on the right, a white car sits stationary partly inside a garage opening, narrowing the roadside space. On the left sidewalk mid-distance, a person stands by a storefront without moving into the road.", "hazard_reasoning": "There is a man wearing a pair of khaki trousers, a short-sleeved shirt, black shoes, a green cap, putting litter in a litter bin on the right side of the road, walking towards the ego lane. The pedestrian is walking toward the ego lane, which may lead to entering the vehicle's path, so the driver should be aware to prevent a potential collision."}
{"id": "train_06523", "split": "train", "clip_key": "2020-0204-150838_040795_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "040795"}, "frames": ["2020-0204-150838_040795_movie_t-3.jpg", "2020-0204-150838_040795_movie_t-2.jpg", "2020-0204-150838_040795_movie_t-1.jpg", "2020-0204-150838_040795_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes runs between high-rise offices, separated from oncoming lanes by a low median of red bollards; the asphalt is dry and traffic flows slowly in dense city congestion. A white van drives ahead in the ego lane and gradually pulls away, effectively setting the ego car's pace. In the adjacent left lane, a silver car edges forward beside the ego vehicle and then drifts slightly back while keeping its lane. To the right, beyond the bollard median, a large city bus and several cars approach in the oncoming lanes, clearly divided from the ego path. Farther ahead, additional cars in the same direction proceed in a compact queue, and curbside queues narrow the left edge but do not impede the ego lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06524", "split": "train", "clip_key": "titan_clip_1193_000192_movie", "source": {"subset": "titan", "scenario": "clip_1193", "frame": "000192"}, "frames": ["titan_clip_1193_000192_movie_t-3.jpg", "titan_clip_1193_000192_movie_t-2.jpg", "titan_clip_1193_000192_movie_t-1.jpg", "titan_clip_1193_000192_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "A narrow urban side street with no centerline and dry pavement runs between buildings, and a row of orange cones along the left curb narrows the lane; traffic is light. An oncoming cyclist approaches along the right edge in the shared lane, constraining passing space. A pedestrian walks on the left side toward the ego car beside the cones and may edge into the lane.", "hazard_reasoning": "There is a pedestrian walking on the left side of the road, toward the ego car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should be aware and prepared to adjust speed and steer safely."}
{"id": "train_06525", "split": "train", "clip_key": "titan_clip_1054_000072_movie", "source": {"subset": "titan", "scenario": "clip_1054", "frame": "000072"}, "frames": ["titan_clip_1054_000072_movie_t-3.jpg", "titan_clip_1054_000072_movie_t-2.jpg", "titan_clip_1054_000072_movie_t-1.jpg", "titan_clip_1054_000072_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing ahead", "environment_perception": "An urban narrow undivided street with mid-rise buildings stretches ahead; the pavement is smooth and traffic is light with a few vehicles moving steadily. A pedestrian in a white shirt crosses mid-block ahead from the left sidewalk toward the right, entering the middle of the road and momentarily occupying the ego vehicle's path. A white hatchback farther ahead in the same lane travels slowly near the center of the street, setting the pace for the ego vehicle. Parked cars line both curbs, narrowing the usable lane, and a side street on the right shows a no-entry sign.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, crossing the street in the middle of the road, from the left side to the right side. The driver should be aware of this pedestrian crossing to avoid a potential collision."}
{"id": "train_06526", "split": "train", "clip_key": "2020-0203-154554_058415_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "058415"}, "frames": ["2020-0203-154554_058415_movie_t-3.jpg", "2020-0203-154554_058415_movie_t-2.jpg", "2020-0203-154554_058415_movie_t-1.jpg", "2020-0203-154554_058415_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "A tree-lined urban boulevard with two lanes in the ego direction and a striped painted median separating oncoming traffic shows dry, smooth pavement and slow, congested flow. Ahead in the ego lane, a gray minivan is stopped with brake lights on because of congestion, holding the ego vehicle. In the adjacent left lane, a beige minivan moves slowly forward past the queue, traveling parallel to the ego vehicle and the stopped van. To the right beyond the chevron median, a white minivan approaches in the opposite direction and continues straight amid steady oncoming traffic.", "hazard_reasoning": "There is a gray minivan stopped in the ego lane because of traffic congestion. Driver should stop to avoid colliding with the stationary minivan ahead."}
{"id": "train_06527", "split": "train", "clip_key": "2020-0214-145407_014771_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "014771"}, "frames": ["2020-0214-145407_014771_movie_t-3.jpg", "2020-0214-145407_014771_movie_t-2.jpg", "2020-0214-145407_014771_movie_t-1.jpg", "2020-0214-145407_014771_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with multiple same-direction lanes and no physical median runs through a commercial area, the dry pavement smooth and traffic moderate. A white box truck directly ahead in the ego lane slows because a vehicle turns left further ahead, briefly constraining the ego car's pace. In the adjacent right lane, another box truck travels slightly ahead at a steady speed, limiting immediate room to change lanes. On the far right lane, a small white car overtakes and moves past the trucks. Pedestrians walk along the left sidewalk behind a rail, remaining outside the carriageway.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of a vehicle turning left ahead. The truck's deceleration may require the driver to slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_06528", "split": "train", "clip_key": "titan_clip_1036_000342_movie", "source": {"subset": "titan", "scenario": "clip_1036", "frame": "000342"}, "frames": ["titan_clip_1036_000342_movie_t-3.jpg", "titan_clip_1036_000342_movie_t-2.jpg", "titan_clip_1036_000342_movie_t-1.jpg", "titan_clip_1036_000342_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with mid-rise buildings and a single forward lane has smooth pavement and light same-direction traffic, with construction fencing on the left and a solid wall with bollards on the right forming a narrow corridor. A dark van is stopped along the left curb near the ego lane, and a person stands at its open door, slightly encroaching into the roadway. A black car ahead in the ego lane continues straight over a zebra crossing, setting the pace. Pedestrians are visible on both sidewalks near the crossing, with a few standing at the edges of the crosswalk on the right, while others walk along the left behind the barriers.", "hazard_reasoning": "There is a cyclist wearing a blue shirt with shorts cycling toward the ego car to the right side of the road. The cyclist's path intersects the vehicle's lane, so the driver should slow down to prevent a collision."}
{"id": "train_06529", "split": "train", "clip_key": "2020-0218-103119_013175_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "013175"}, "frames": ["2020-0218-103119_013175_movie_t-3.jpg", "2020-0218-103119_013175_movie_t-2.jpg", "2020-0218-103119_013175_movie_t-1.jpg", "2020-0218-103119_013175_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be cautious of van merging into lane", "environment_perception": "An urban arterial with two lanes in the ego direction and painted separators has smooth dry pavement and light traffic. Ahead in the ego lane, a white van moves rightward, cutting in to the ego lane from the left lane and settling in front, slightly constraining the ego car's pace. Farther ahead in the adjacent right lane, a small car continues straight at a steady speed in the same direction. Two pedestrians walk along the left sidewalk without approaching the roadway. A round roadside sign shows 50, indicating the posted speed limit.", "hazard_reasoning": "There is a white van in front of the ego car, cutting in to the ego lane from the left lane. This sudden lane change reduces your following distance and may force evasive action, so remain vigilant under this situation."}
{"id": "train_06530", "split": "train", "clip_key": "2020-0131-135401_010528_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "010528"}, "frames": ["2020-0131-135401_010528_movie_t-3.jpg", "2020-0131-135401_010528_movie_t-2.jpg", "2020-0131-135401_010528_movie_t-1.jpg", "2020-0131-135401_010528_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid orange centerline runs between close-set buildings; the pavement is smooth and traffic is light. A large white box truck is stopped directly ahead in the left ego lane, blocking the path and constraining the ego vehicle's pace. A small silver truck approaches from ahead in the oncoming lane at low speed, continuing straight and temporarily preventing any pass around the stopped vehicle. No median or usable shoulder is visible, and no other notable road users appear.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The halted truck blocks the path directly ahead, creating a risk of rear-end collision, so the driver must stop immediately."}
{"id": "train_06531", "split": "train", "clip_key": "2020-0226-101332_023359_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "023359"}, "frames": ["2020-0226-101332_023359_movie_t-3.jpg", "2020-0226-101332_023359_movie_t-2.jpg", "2020-0226-101332_023359_movie_t-1.jpg", "2020-0226-101332_023359_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs between mid-rise buildings, with a painted gore acting as a median; the pavement is dry and traffic is moderate and moving smoothly. Despite the caption, no black pickup truck is visible slowing in the ego lane, and there is no congestion. A white SUV ahead in the ego lane travels at a steady pace, following the line of cars farther ahead that sets the pace. A small green truck to the right moves in the adjacent lane at a similar speed and may edge left near the gore, potentially entering the ego lane. Another green truck is stopped along the right curb, so passing traffic keeps left as it goes by.", "hazard_reasoning": "There is a black pickup truck slowing in the ego lane, because there is traffic congestion. Slow down to adjust to the congested traffic and maintain a safe following distance."}
{"id": "train_06532", "split": "train", "clip_key": "titan_clip_899_000546_movie", "source": {"subset": "titan", "scenario": "clip_899", "frame": "000546"}, "frames": ["titan_clip_899_000546_movie_t-3.jpg", "titan_clip_899_000546_movie_t-2.jpg", "titan_clip_899_000546_movie_t-1.jpg", "titan_clip_899_000546_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of the pedestrian", "environment_perception": "A narrow urban shopping street extends beyond a zebra crossing, the brick pavement in good condition with no motor vehicles in either direction, so overall flow is minimal. At the crosswalk ahead, a pedestrian wearing a black T-shirt with jungle green pants walks from right to left across the ego path as the road is clear of vehicles. A woman in a light yellow skirt carrying a bag crosses left to right in front of the car toward the left sidewalk. Farther ahead in the lane, a person proceeds away along the center of the street. Orange safety cones line the right storefront, and a no-parking sign is posted on the left.", "hazard_reasoning": "a pedestrian wearing a black t-shirt with jungle green pant is walking from the right to the left side of the street because the road is clear of any vehicle. The pedestrian may cross ahead of the vehicle, so be aware of their movement."}
{"id": "train_06533", "split": "train", "clip_key": "2020-0131-103016_027323_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "027323"}, "frames": ["2020-0131-103016_027323_movie_t-3.jpg", "2020-0131-103016_027323_movie_t-2.jpg", "2020-0131-103016_027323_movie_t-1.jpg", "2020-0131-103016_027323_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "An urban multi-lane road with smooth asphalt and no visible central median runs past offices and trees, and traffic flows at a slow to moderate pace. A blue and white truck in the right lane ahead signals and moves left into the ego lane in front of the ego car, occupying the gap and becoming the immediate lead vehicle. A silver sedan already ahead in the ego lane proceeds straight at low speed and bunches up as the truck merges, limiting the ego vehicle's pace. On the left curb near the crosswalk, a small blue truck stands parked with two orange cones, slightly narrowing the left edge of the lane.", "hazard_reasoning": "There is a blue and white truck changing lanes from the right lane to the ego lane, in front of the ego car. The truck is merging into the ego lane ahead, so the driver should yield to allow safe lane integration."}
{"id": "train_06534", "split": "train", "clip_key": "2020-0205-103411_106579_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "106579"}, "frames": ["2020-0205-103411_106579_movie_t-3.jpg", "2020-0205-103411_106579_movie_t-2.jpg", "2020-0205-103411_106579_movie_t-1.jpg", "2020-0205-103411_106579_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with dry pavement and a painted striped median appears under light-to-moderate traffic as vehicles approach a signalized intersection. A white van directly ahead in the ego lane is stopped for the red light, holding the ego vehicle's path. In the adjacent left lane, a black minivan and another car are also queued and stationary, parallel to the ego lane. On the far right beyond the striped buffer, oncoming vehicles move through the junction, separated from the ego's direction of travel. The traffic signal ahead shows red. A cyclist rides along the right-side sidewalk near the intersection and stays off the roadway.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver must stop to comply with the red light and maintain a safe distance to avoid a rear-end collision under these conditions."}
{"id": "train_06535", "split": "train", "clip_key": "2020-0227-104226_108988_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "108988"}, "frames": ["2020-0227-104226_108988_movie_t-3.jpg", "2020-0227-104226_108988_movie_t-2.jpg", "2020-0227-104226_108988_movie_t-1.jpg", "2020-0227-104226_108988_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with solid yellow lane boundaries and smooth pavement carries heavy, slow traffic. A large white truck is stopped directly ahead in the ego lane, blocking the path and holding the queue, matching the note that a white truck is stopped in front. Ahead-left, a small light truck in the adjacent lane inches forward past the stopped truck and may move into space ahead of the ego vehicle. Ahead-right, a gray hatchback in the right lane rolls slowly with traffic, limiting chances to pass. A pedestrian overpass spans the roadway ahead, and low hedges line the right side as a divider.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The truck's sudden halt ahead poses a collision risk, so the driver should stop promptly to avoid crashing into it."}
{"id": "train_06536", "split": "train", "clip_key": "2020-0205-103411_090262_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "090262"}, "frames": ["2020-0205-103411_090262_movie_t-3.jpg", "2020-0205-103411_090262_movie_t-2.jpg", "2020-0205-103411_090262_movie_t-1.jpg", "2020-0205-103411_090262_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs beside a shrub median, the pavement dry and smooth, and traffic is heavy and slow. A white hatchback directly ahead in the ego lane slows for a red traffic light ahead, forcing the ego vehicle to queue. Farther ahead a large dump truck in the same lane waits near the front of the line, limiting progress. In the adjacent left lane a white van and other cars crawl forward alongside and occasionally edge toward the ego lane but continue in their lanes.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car in the ego lane because of a red traffic light ahead. You should stop to maintain a safe distance and comply with the red signal to avoid a rear-end collision."}
{"id": "train_06537", "split": "train", "clip_key": "2020-0203-114632_041746_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "041746"}, "frames": ["2020-0203-114632_041746_movie_t-3.jpg", "2020-0203-114632_041746_movie_t-2.jpg", "2020-0203-114632_041746_movie_t-1.jpg", "2020-0203-114632_041746_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes and a painted gore forming a right-turn channel has smooth pavement and moderate, steadily moving traffic. A silver van drives ahead in the ego lane at a steady pace because the road ahead is clear, lightly setting the ego car's pace. To the right, a black minivan continues in the adjacent lane toward the right-turn channel and remains parallel to the ego vehicle. Farther right, a city bus proceeds in the designated right-turn lane beside the gore area without encroaching left. An overhead guide sign shows the left lanes continue straight while the right lane turns right.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06538", "split": "train", "clip_key": "titan_clip_987_000324_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_987_000324_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_987_000324_movie_t-3_augB1.jpg", "titan_clip_987_000324_movie_t-2_augB1.jpg", "titan_clip_987_000324_movie_t-1_augB1.jpg", "titan_clip_987_000324_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single narrow lane each direction curves right, with no median and generally smooth pavement; traffic appears light. Ahead in the ego lane, a cyclist wearing a white shirt and black pants rides near the middle of the road, moving away from the car and effectively setting the pace. Farther ahead to the right, another cyclist proceeds cautiously around a blue flatbed truck. The blue truck is stopped along the right curb, protruding into the roadway and creating a pinch point through the bend. A few pedestrians stand on the left sidewalk near a storefront, remaining clear of the lane.", "hazard_reasoning": "There is a cyclist wearing a white shirt and black pants, cycling in the middle of the road, away from the ego car. The cyclist's central position may lead to unpredictable movements, so the driver should slow down to maintain a safe distance."}
{"id": "train_06539", "split": "train", "clip_key": "titan_clip_433_000042_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_433_000042_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_433_000042_movie_t-3_augB1.jpg", "titan_clip_433_000042_movie_t-2_augB1.jpg", "titan_clip_433_000042_movie_t-1_augB1.jpg", "titan_clip_433_000042_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with interlocking brick pavement and no median runs between buildings, with a construction fence on the right; traffic is very light and mostly pedestrian, and no signals are visible. Ahead on the left, a woman in a striped shirt and black shorts carrying an umbrella walks from the left side toward the right to get around a white van parked along the curb, potentially entering the ego path. Farther ahead on the right edge, a man walks away from the camera in the lane, keeping near the curb. In the distance near midlane, another pedestrian crosses to the right. A parked white van partly narrows the lane on the left, and cones line the work zone by the right fence.", "hazard_reasoning": "There is a woman wearing a striped shirt and black shorts, carrying an umbrella, and walking on the left side of the road, towards the right side because of the parked vehicle. The pedestrian is stepping into the driving lane due to the obstruction, so you should slow down to maintain a safe distance."}
{"id": "train_06540", "split": "train", "clip_key": "2020-0214-145407_028237_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "028237"}, "frames": ["2020-0214-145407_028237_movie_t-3.jpg", "2020-0214-145407_028237_movie_t-2.jpg", "2020-0214-145407_028237_movie_t-1.jpg", "2020-0214-145407_028237_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth pavement and dedicated right-turn lanes on the right carries slow, queued same-direction traffic. A silver sedan ahead in the ego lane is stopped at a red signal, constraining the ego vehicle's pace. To the left, a red compact car waits in the adjacent lane alongside the ego vehicle as part of the queue and does not merge. Farther left ahead, a dark SUV creeps forward in its lane, keeping position in the line of cars. On the far right, a bus stands at a curbside stop outside the travel lanes and remains stationary. Distant pedestrians gather near the intersection across the roadway, consistent with the signal phase.", "hazard_reasoning": "There is a silver sedan stopped in the ego lane because of the red traffic lights. The driver must stop to avoid a rear-end collision with the halted vehicle."}
{"id": "train_06541", "split": "train", "clip_key": "2020-0228-102841_070841_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_070841_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_070841_movie_t-3_augB1.jpg", "2020-0228-102841_070841_movie_t-2_augB1.jpg", "2020-0228-102841_070841_movie_t-1_augB1.jpg", "2020-0228-102841_070841_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the worker carefully", "environment_perception": "An urban two-way street with a single lane each way passes a construction site; the pavement is dry and the work zone narrows the roadway, so overall traffic is light and slow. A concrete mixer truck is stopped ahead on the left edge of the ego lane, occupying part of the lane and constraining the approach. A construction worker in a blue uniform with an orange reflector jacket and a helmet stands just ahead near this truck on the left, directing traffic through the narrowed section. A few pedestrians remain on the distant sidewalks and do not enter the road. Cones, barricades, and a tall temporary wall line the right side, forming a bottleneck, and no traffic signal or posted speed sign is clearly visible.", "hazard_reasoning": "There is a pedestrian in blue uniform and orange reflector jacket, with a helmet, standing on the right side of the road, because they are directing traffic. Because they are actively guiding vehicles near the construction zone and partially obstructing the lane, the driver should carefully manoeuvre to avoid hitting them."}
{"id": "train_06542", "split": "train", "clip_key": "titan_clip_503_000468_movie", "source": {"subset": "titan", "scenario": "clip_503", "frame": "000468"}, "frames": ["titan_clip_503_000468_movie_t-3.jpg", "titan_clip_503_000468_movie_t-2.jpg", "titan_clip_503_000468_movie_t-1.jpg", "titan_clip_503_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban shopping street with a narrow single-lane shared roadway paved with interlocking bricks has no divider or lane markings and carries very light vehicular traffic. On the right ahead, a pedestrian wearing a blue shirt and black pants walks away from the camera along the edge, moving within the ego vehicle's path. Farther ahead near the center-left, a small group of pedestrians proceeds in the same direction within the roadway, limiting the available space for the ego vehicle. Additional pedestrians move along the storefronts on both sides, remaining mostly at the edges without crossing into the path. A parked motorcycle and several signboards on the right narrow the margin.", "hazard_reasoning": "There is a pedestrian wearing black pants and a blue shirt walking away from the ego car on the right side of the road. The driver should carefully manoeuvre to maintain a safe distance from the pedestrian and avoid a potential collision."}
{"id": "train_06543", "split": "train", "clip_key": "titan_clip_439_000480_movie", "source": {"subset": "titan", "scenario": "clip_439", "frame": "000480"}, "frames": ["titan_clip_439_000480_movie_t-3.jpg", "titan_clip_439_000480_movie_t-2.jpg", "titan_clip_439_000480_movie_t-1.jpg", "titan_clip_439_000480_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "A narrow urban commercial alley with a single shared lane and block-paved surface has no divider or markings, and traffic is light with slow movement. The white van ahead in the ego lane moves away down the street, limiting speed through the corridor. On the right near the shopfront, a pedestrian in a white shirt walks toward the ego-vehicle along the roadway because parked vehicles and storefront displays leave little space, and he proceeds along the margin of the ego path. In the center ahead, another pedestrian walks toward the ego-vehicle in the lane, occupying part of the ego path. Numerous parked bicycles, a cone, and merchandise encroach from the right, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking on the right side of the road, towards the ego-car, because of the parked vehicle. The driver should be alert as the pedestrian may unexpectedly cross or step into the path while navigating around the parked vehicle."}
{"id": "train_06544", "split": "train", "clip_key": "2020-0225-102455_060442_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "060442"}, "frames": ["2020-0225-102455_060442_movie_t-3.jpg", "2020-0225-102455_060442_movie_t-2.jpg", "2020-0225-102455_060442_movie_t-1.jpg", "2020-0225-102455_060442_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three lanes in the ego direction approaches a wide intersection without a median; the pavement is clean and dry, and traffic in our direction is stationary. Directly ahead, a white van in the ego lane is stopped for a red light, holding the ego vehicle. To the left, a black sedan waits in the adjacent lane at the stop line, remaining stationary and parallel to the ego path. To the right, a silver minivan is also stopped beside the ego lane at the line. The traffic signal ahead shows red for this approach.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop the vehicle to avoid colliding with the halted van at the red light."}
{"id": "train_06545", "split": "train", "clip_key": "2020-0217-144444_019314_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "019314"}, "frames": ["2020-0217-144444_019314_movie_t-3.jpg", "2020-0217-144444_019314_movie_t-2.jpg", "2020-0217-144444_019314_movie_t-1.jpg", "2020-0217-144444_019314_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down and maintain safe distance", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, with smooth pavement and clear markings; traffic is moderate and queued at a signalized intersection with little movement. A white hatchback directly ahead in the ego lane is stopped for the red light at the intersection, holding the ego vehicle in place. In the adjacent right lane ahead, a green flatbed truck waits at the stop line, remaining stationary with the queue. On the far right, a white sedan approaches along a side lane and slows alongside, potentially merging after the signal changes. Overhead signals facing this approach display red for the through lanes.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane because of the red traffic light at the intersection ahead. The stopped vehicle at the red signal requires you to slow down and keep a safe distance to avoid a collision."}
{"id": "train_06546", "split": "train", "clip_key": "2020-0205-103411_097434_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "097434"}, "frames": ["2020-0205-103411_097434_movie_t-3.jpg", "2020-0205-103411_097434_movie_t-2.jpg", "2020-0205-103411_097434_movie_t-1.jpg", "2020-0205-103411_097434_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road with red asphalt and clear lane markings is dry and in good condition, and traffic is moderate and flowing. A small white flatbed truck carrying a ladder is directly ahead in the ego lane and accelerates as the light ahead shows green, briefly setting the pace. To the left, a white station wagon travels alongside slightly behind in its lane without moving toward the ego lane. In the adjacent right lane, a white van farther ahead proceeds straight at similar speed, remaining parallel to the ego vehicle.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06547", "split": "train", "clip_key": "2020-0129-144857_032689_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "032689"}, "frames": ["2020-0129-144857_032689_movie_t-3.jpg", "2020-0129-144857_032689_movie_t-2.jpg", "2020-0129-144857_032689_movie_t-1.jpg", "2020-0129-144857_032689_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban scene under an elevated structure shows a two-lane road with smooth asphalt, a right-side guardrail, a planted strip on the left, and traffic that is slow and bunched. A black SUV directly ahead in the ego lane is stopped, queuing because of congestion and blocking the ego vehicle's path. Farther ahead in the same lane, a white box truck is also stopped, reinforcing the backup and setting the pace. Buildings flank both sides, and no oncoming traffic or pedestrians are visible.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, because of traffic congestion ahead. You should stop to avoid colliding with the halted vehicle in your lane."}
{"id": "train_06548", "split": "train", "clip_key": "2020-0226-101332_045648_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "045648"}, "frames": ["2020-0226-101332_045648_movie_t-3.jpg", "2020-0226-101332_045648_movie_t-2.jpg", "2020-0226-101332_045648_movie_t-1.jpg", "2020-0226-101332_045648_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial curves gently right under a pedestrian overpass, with fences separating sidewalks from the roadway and smooth, dry pavement; traffic flows light to moderate in the same direction. A dark sedan ahead in the ego lane continues straight at a steady pace, effectively setting our speed. A white van in the lane to the left moves slightly faster and draws ahead. Another van in the curbside right lane travels parallel, maintaining its lane near the guardrail. Pedestrians walk along the left sidewalk behind the fence, well clear of the roadway. A signalized intersection is visible in the distance, but the signal aspect is not discernible.", "hazard_reasoning": "No hazards detected; driver can maintain speed and lane."}
{"id": "train_06549", "split": "train", "clip_key": "titan_clip_130_000504_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_130_000504_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_130_000504_movie_t-3_augB1.jpg", "titan_clip_130_000504_movie_t-2_augB1.jpg", "titan_clip_130_000504_movie_t-1_augB1.jpg", "titan_clip_130_000504_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian carefully", "environment_perception": "A narrow urban street with brick-pattern pavement runs between tall buildings, and traffic is light with the lane partially blocked on the right by a parked box truck. Ahead in the ego lane, a pedestrian wearing a striped T-shirt and white pants walks toward the car around the parked vehicle, entering the travel space because the truck narrows the way. Another pedestrian just beyond the truck moves away along the right edge, hugging the vehicle and reducing the available clearance. On the left, a pedestrian continues along the sidewalk parallel to the car and remains outside the lane. The parked truck forms a tight pinch point in the roadway.", "hazard_reasoning": "There is a pedestrian wearing a striped T-shirt and white pants, and walking in front of the ego car, towards the ego car, because of the parked vehicle. The driver should manoeuvre around the pedestrian carefully because the parked truck forces the pedestrian into the driving lane."}
{"id": "train_06550", "split": "train", "clip_key": "2020-0127-132751_095932_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "095932"}, "frames": ["2020-0127-132751_095932_movie_t-3.jpg", "2020-0127-132751_095932_movie_t-2.jpg", "2020-0127-132751_095932_movie_t-1.jpg", "2020-0127-132751_095932_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop due to traffic congestion ahead", "environment_perception": "An urban two-way road with one lane in each direction and no median passes commercial buildings; the asphalt looks smooth and dry, and traffic is moderate but slows near the ego-vehicle. Directly ahead in the ego lane, a silver van is stopped in a short queue, constraining the ego-car because of congestion ahead. Farther ahead in the same line, a tall white box truck also remains stationary, reinforcing the slowdown. To the right, oncoming traffic, including a white SUV and a small van, approaches steadily in its lane and stays separate from the ego path.", "hazard_reasoning": "there is a silver van stopped in front of the ego-car, because of the traffic congestion ahead. The driver should stop to maintain a safe following distance and avoid a collision with the stationary vehicle ahead."}
{"id": "train_06551", "split": "train", "clip_key": "titan_clip_309_000300_movie", "source": {"subset": "titan", "scenario": "clip_309", "frame": "000300"}, "frames": ["titan_clip_309_000300_movie_t-3.jpg", "titan_clip_309_000300_movie_t-2.jpg", "titan_clip_309_000300_movie_t-1.jpg", "titan_clip_309_000300_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with two same-direction lanes and no median extends ahead; the pavement is dry and smooth, and traffic is light. A small car ahead in the left lane proceeds cautiously and slows midblock, constraining the ego vehicle's pace. A pedestrian in a white shirt carrying boxes runs from the right sidewalk to the left across the lane directly ahead, passing in front of the ego car. Another person waits near the left curb by shopfronts without entering the roadway. Orange cones and a temporary sign occupy part of the right lane ahead, slightly narrowing the space.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying boxes, running from the right side to the left side, in front of the ego car. The pedestrian may suddenly enter the vehicle's path, so the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_06552", "split": "train", "clip_key": "titan_clip_31_000390_movie", "source": {"subset": "titan", "scenario": "clip_31", "frame": "000390"}, "frames": ["titan_clip_31_000390_movie_t-3.jpg", "titan_clip_31_000390_movie_t-2.jpg", "titan_clip_31_000390_movie_t-1.jpg", "titan_clip_31_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian near parked truck", "environment_perception": "An urban two-way street curves gently left between closely spaced buildings, with no median and smooth pavement, and traffic is light. On the right edge near the ego lane, three pedestrians in white shirts walk toward the vehicle along a green-painted shoulder, moving close to the travel lane. Farther ahead in the same direction, a small green truck proceeds slowly away near the centerline, slightly constraining the ego vehicle's pace. On the left sidewalk mid-distance, a person stands by a pushcart near the curb. A white truck is stopped at the left curb with someone at its door, narrowing the approach and contributing to a partially blind bend ahead.", "hazard_reasoning": "There is a person wearing a pink shirt with a gray pant, walking on the right side of the road away from the ego car. The pedestrian walking near the parked truck could step into the lane unexpectedly, so the driver should maintain awareness and anticipate potential crossing."}
{"id": "train_06553", "split": "train", "clip_key": "2020-0203-114632_005124_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005124"}, "frames": ["2020-0203-114632_005124_movie_t-3.jpg", "2020-0203-114632_005124_movie_t-2.jpg", "2020-0203-114632_005124_movie_t-1.jpg", "2020-0203-114632_005124_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane in each direction and a centerline runs between shops and apartments; the pavement is smooth and traffic is light, but the flow in the ego left lane is halted by roadworks. Ahead in the ego lane, a road worker stands among orange cones beside a small work truck and signals the ego vehicle to stop and wait. In the opposite lane, an oncoming city bus advances past the work area toward the camera. The work truck and equipment block the left lane near the curb, narrowing the carriageway into a short alternating one-way section.", "hazard_reasoning": "There is construction work blocking the left lane, ego car must stop and wait until given the signal to proceed. The driver should stop to avoid entering the blocked lane and follow the construction signal."}
{"id": "train_06554", "split": "train", "clip_key": "titan_clip_208_000414_movie", "source": {"subset": "titan", "scenario": "clip_208", "frame": "000414"}, "frames": ["titan_clip_208_000414_movie_t-3.jpg", "titan_clip_208_000414_movie_t-2.jpg", "titan_clip_208_000414_movie_t-1.jpg", "titan_clip_208_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrians", "environment_perception": "A narrow urban street lined with mid-rise buildings has a single through lane with no median; the pavement is dry and traffic is light with a couple of vehicles ahead moving slowly. A small van and another light vehicle proceed ahead in the ego lane at low speed, setting the pace. On the right edge of the ego lane, two pedestrians-one wearing black pants and a white shirt carrying a bag, and another in a black raincoat carrying an umbrella-walk along the roadway because there is no sidewalk, occupying part of the lane and potentially impeding passage. A white wagon is parked along the left curb, protruding slightly into the lane and further narrowing the corridor. No notable signals or speed signs are visible.", "hazard_reasoning": "There are two pedestrians, a male wearing black pants, white shirt and carrying a bag, and a female wearing a black raincoat and carrying an umbrella, both walking on the right side of the street, in the ego lane, because there is no sidewalk. The pedestrians are walking within the ego lane and may step into the vehicle's path, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_06555", "split": "train", "clip_key": "2020-0131-103016_079995_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "079995"}, "frames": ["2020-0131-103016_079995_movie_t-3.jpg", "2020-0131-103016_079995_movie_t-2.jpg", "2020-0131-103016_079995_movie_t-1.jpg", "2020-0131-103016_079995_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial passes shops and apartments, with a curbside green shoulder and dry, smooth pavement; traffic is heavy and largely stopped. The ego car is in the left lane. A gray van is directly ahead in the ego lane and remains stationary because of congestion ahead, holding the ego car. To the right, a large silver box truck alongside and slightly forward in the adjacent lane stands still in the queue, preventing an easy merge. Farther ahead, a truck with a red rear panel waits in line, showing the backup continues beyond the visible block.", "hazard_reasoning": "There is a gray van stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and prevent a rear-end collision in slowed traffic."}
{"id": "train_06556", "split": "train", "clip_key": "titan_clip_1180_000252_movie", "source": {"subset": "titan", "scenario": "clip_1180", "frame": "000252"}, "frames": ["titan_clip_1180_000252_movie_t-3.jpg", "titan_clip_1180_000252_movie_t-2.jpg", "titan_clip_1180_000252_movie_t-1.jpg", "titan_clip_1180_000252_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way, two-lane road with no median and smooth pavement is shown, and traffic is light. Ahead in the left-hand ego lane, a cyclist in a white shirt with a green bag rides in the middle of the road, moving away from the ego because a small truck is stopped along the left curb, and the bicycle temporarily constrains the pace. The small box truck remains stationary near the crosswalk, narrowing the lane. An oncoming white car approaches in the opposite lane and passes without deviating. The traffic signal ahead shows green for through movement.", "hazard_reasoning": "There is a cyclist wearing a white shirt, carrying a green bag, cycling in the middle of the road, away from the ego car, because of the parked vehicle. The cyclist is riding in the travel lane to avoid the parked vehicle and may cross into your path, so slow down to avoid a collision."}
{"id": "train_06557", "split": "train", "clip_key": "2020-0210-101957_042212_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "042212"}, "frames": ["2020-0210-101957_042212_movie_t-3.jpg", "2020-0210-101957_042212_movie_t-2.jpg", "2020-0210-101957_042212_movie_t-1.jpg", "2020-0210-101957_042212_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement and a wide painted chevron divider stretches ahead, and traffic is moderate but bunches further up. A black sedan directly ahead in the ego lane slows because of congestion ahead, constraining the ego car's speed. A silver car runs alongside in the adjacent left lane near the ego, limiting any move to the left. Several white vans and trucks queue in the right lanes in the same direction, progressing steadily and contributing to the slowdown. An overhead blue guide sign indicates Route 8 toward Asagaya to the left and other destinations straight ahead.", "hazard_reasoning": "There is a black sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_06558", "split": "train", "clip_key": "titan_clip_1045_000114_movie", "source": {"subset": "titan", "scenario": "clip_1045", "frame": "000114"}, "frames": ["titan_clip_1045_000114_movie_t-3.jpg", "titan_clip_1045_000114_movie_t-2.jpg", "titan_clip_1045_000114_movie_t-1.jpg", "titan_clip_1045_000114_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban two-way street with a single lane in each direction has smooth pavement and clear edge lines, and traffic is light with no vehicles nearby. A pedestrian ahead just to the right of the ego lane walks toward the camera along the right edge of the roadway, briefly occupying part of the lane and thus relevant to the ego's path. Farther ahead near the center of the lane, a bicyclist travels away from the ego in the same direction, likely to set the pace if the gap closes. On the left, another pedestrian moves along the curbside by the bollards, close to the roadway but continuing parallel to traffic. No signals or posted speed signs are prominent, and there are no parked vehicles or obstacles beyond the narrow confines of the street.", "hazard_reasoning": "No hazards are present. The road is clear and no unexpected objects or road users are obstructing the vehicle's path, so the driver may continue driving safely."}
{"id": "train_06559", "split": "train", "clip_key": "2020-0207-151349_032382_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "032382"}, "frames": ["2020-0207-151349_032382_movie_t-3.jpg", "2020-0207-151349_032382_movie_t-2.jpg", "2020-0207-151349_032382_movie_t-1.jpg", "2020-0207-151349_032382_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "be aware of the silver hatchback", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes and clean pavement; traffic appears moderate and slow-moving. Directly ahead in the ego lane, a box truck rolls forward at low speed and sets the pace. Ahead to the left, there is a silver hatchback stopped in the left lane, blocking that lane and potentially prompting merges toward the ego lane. In the right lane slightly ahead, a black sedan continues steadily past the truck while remaining in its lane.", "hazard_reasoning": "There is a silver hatchback stopped in the left lane. Drivers should be aware because this stopped hatchback could cause unexpected slowdowns or sudden lane changes."}
{"id": "train_06560", "split": "train", "clip_key": "2020-0225-102455_077029_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "077029"}, "frames": ["2020-0225-102455_077029_movie_t-3.jpg", "2020-0225-102455_077029_movie_t-2.jpg", "2020-0225-102455_077029_movie_t-1.jpg", "2020-0225-102455_077029_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial in Japan with three lanes in the ego direction runs between mid-rise buildings, the dry asphalt in good condition and traffic light to moderate. The ego travels in the middle lane as a roadside barrier and trees line the right and delivery activity occupies the left. A white van ahead in the ego lane drives away at a steady pace, setting the immediate headway. In the left lane, several trucks are stopped at the curb and a larger box truck stands near the lane, limiting a leftward lane change. On the right, a red truck in the adjacent lane proceeds slightly ahead, moving parallel to the ego. A right-exit lane begins ahead, marked by arrows and solid lines.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. You should be aware of this white van ahead because it may brake unexpectedly."}
{"id": "train_06561", "split": "train", "clip_key": "2020-0218-103119_014566_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "014566"}, "frames": ["2020-0218-103119_014566_movie_t-3.jpg", "2020-0218-103119_014566_movie_t-2.jpg", "2020-0218-103119_014566_movie_t-1.jpg", "2020-0218-103119_014566_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road with left-side traffic approaches a signalized intersection; the pavement looks dry and smooth and traffic is moderate. A white van ahead in the ego lane drives away through the intersection, setting the pace for the ego vehicle. A dark minivan slightly farther ahead in the right same-direction lane proceeds straight in parallel without encroaching. On the oncoming side to the right, a blue truck approaches the stop line and slows, remaining well separated by the central lanes. The overhead traffic light for the ego direction shows green.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. The driver should be aware of this vehicle because it may slow down or brake unexpectedly, requiring prompt reaction to maintain safe distance."}
{"id": "train_06562", "split": "train", "clip_key": "2020-0203-114632_059626_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "059626"}, "frames": ["2020-0203-114632_059626_movie_t-3.jpg", "2020-0203-114632_059626_movie_t-2.jpg", "2020-0203-114632_059626_movie_t-1.jpg", "2020-0203-114632_059626_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes runs through mid-rise buildings, divided from oncoming lanes to the right by a short post-and-rail median; the pavement is smooth with fresh markings and traffic is light. A silver hatchback ahead slightly to the right continues straight through the crosswalk area, setting the pace for the ego vehicle. Farther ahead near the right curb, a white van travels in the same direction with a steady gap. On the left at the zebra crossing, two pedestrians stand at the curb and may step into the crosswalk. Sparse oncoming traffic proceeds in the opposite lanes to the right.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06563", "split": "train", "clip_key": "2020-0217-110854_007146_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "007146"}, "frames": ["2020-0217-110854_007146_movie_t-3.jpg", "2020-0217-110854_007146_movie_t-2.jpg", "2020-0217-110854_007146_movie_t-1.jpg", "2020-0217-110854_007146_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian at crosswalk.", "environment_perception": "An urban two-way street with a single narrow lane in each direction and no median, lined with parked vehicles, shows smooth pavement and light traffic as the ego vehicle approaches a zebra crosswalk. A white box truck ahead in the same direction slows and pauses at the crosswalk, setting the pace. A cyclist ahead near the lane center rides toward the crosswalk and proceeds straight, briefly entering the ego path. A pedestrian wearing a black shirt and brown pants crosses the crosswalk toward the left side of the road in front of the truck. On the left curb a person stands by a parked white van with its door open at the lane edge. An overhead pedestrian-crossing sign is visible.", "hazard_reasoning": "There is a pedestrian wearing black shirt and brown pants, and crossing the street at the crosswalk to the left side of the road. You should yield because the pedestrian is in the crosswalk and may enter your path."}
{"id": "train_06564", "split": "train", "clip_key": "2020-0131-135401_074972_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "074972"}, "frames": ["2020-0131-135401_074972_movie_t-3.jpg", "2020-0131-135401_074972_movie_t-2.jpg", "2020-0131-135401_074972_movie_t-1.jpg", "2020-0131-135401_074972_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial with midrise buildings on both sides has dry, well-marked pavement and moderate-to-heavy same-direction traffic that compresses ahead. A black hatchback directly in front in the ego lane slows because of congestion, constraining the ego vehicle's pace. A large tanker truck runs alongside in the right lane and creeps forward, occupying the adjacent space and blocking a rightward lane change. A white box truck ahead in the left lane also moves slowly, contributing to the queue and limiting passing options. Overhead gantry signs span the roadway.", "hazard_reasoning": "There is a black hatchback slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_06565", "split": "train", "clip_key": "titan_clip_620_000492_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_620_000492_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_620_000492_movie_t-3_augB1.jpg", "titan_clip_620_000492_movie_t-2_augB1.jpg", "titan_clip_620_000492_movie_t-1_augB1.jpg", "titan_clip_620_000492_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane each direction and no median is shown; the pavement looks smooth and traffic is light. Green cones mark a left-side bike strip, and a white truck is parked partly in the oncoming lane at the right curb, narrowing the roadway. Ahead in the middle of the roadway, a man wearing a black T-shirt, black shorts, and a cap walks toward the ego vehicle while looking at his phone, occupying the travel path because the parked vehicle blocks the curbside. At the right curb beside the truck, two pedestrians walk forward along the tight gap and may edge into the lane to pass it. An overhead blue pedestrian crossing sign is visible ahead.", "hazard_reasoning": "There is a man, wearing a black t-shirt, black shorts, and a cap, looking into his phone and walking in the middle of the road, toward the ego car, because of the parked vehicle. The pedestrian is distracted and entering the vehicle's path due to the sidewalk obstruction, increasing the risk of collision if the driver does not reduce speed."}
{"id": "train_06566", "split": "train", "clip_key": "titan_clip_1207_000300_movie", "source": {"subset": "titan", "scenario": "clip_1207", "frame": "000300"}, "frames": ["titan_clip_1207_000300_movie_t-3.jpg", "titan_clip_1207_000300_movie_t-2.jpg", "titan_clip_1207_000300_movie_t-1.jpg", "titan_clip_1207_000300_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Be aware of the cyclist", "environment_perception": "An urban divided street with a planted median runs ahead, with the ego vehicle on a clean, dry carriageway that has a curbside bus-stop bay; traffic is light and steady. Ahead to the right, a cyclist wearing a black T-shirt and gray shorts rides away from the ego car in the bicycle lane, traveling parallel to the ego path near the median. Across the median on the opposite carriageway, a green city bus is stopped at a curbside stop and remains stationary. Parking and restriction signs are posted on a pole by the median, and no traffic signals or unusual obstacles are evident.", "hazard_reasoning": "There is a cyclist wearing a black t-shirt and gray shorts, cycling in the bicycle lane on the right side of the road, away from the ego car. The cyclist may drift into the lane or change direction unexpectedly, so the driver must be aware and maintain a safe distance."}
{"id": "train_06567", "split": "train", "clip_key": "titan_clip_1392_000048_movie", "source": {"subset": "titan", "scenario": "clip_1392", "frame": "000048"}, "frames": ["titan_clip_1392_000048_movie_t-3.jpg", "titan_clip_1392_000048_movie_t-2.jpg", "titan_clip_1392_000048_movie_t-1.jpg", "titan_clip_1392_000048_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully", "environment_perception": "An urban two-way street with a single narrow lane in each direction runs between mid-rise buildings; there is no median, the pavement is smooth, and traffic is light. A small white truck is ahead in the ego lane proceeding straight at low speed, setting the pace. Ahead on the left, a white truck is parked along the curb, narrowing the usable lane as the ego vehicle approaches. Pedestrians walk along both sidewalks, including one on the right near the curb, but they remain off the roadway. A large 30 speed marking is painted on the pavement.", "hazard_reasoning": "There is a white truck parked on the left side of the road. The parked truck reduces the available road space and may obstruct your path, so you should manoeuvre carefully to avoid a collision."}
{"id": "train_06568", "split": "train", "clip_key": "2020-0226-101332_029821_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "029821"}, "frames": ["2020-0226-101332_029821_movie_t-3.jpg", "2020-0226-101332_029821_movie_t-2.jpg", "2020-0226-101332_029821_movie_t-1.jpg", "2020-0226-101332_029821_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided boulevard with a central planted median and smooth dry pavement approaches a signalized intersection, and traffic is light. A white box truck ahead in the left ego lane nears the stop line and appears stopped, constraining the approach. To the right, a pedestrian wearing an orange jacket runs through the near-side crosswalk and may enter the ego lane. A few oncoming cars beyond the median proceed straight in their lanes without interaction.", "hazard_reasoning": "There is a pedestrian wearing an orange jacket and running in a pedestrian crossing, to the right side. The pedestrian is crossing rapidly and may enter the vehicle's path, so you must stop immediately to avoid a collision."}
{"id": "train_06569", "split": "train", "clip_key": "2020-0228-150133_041195_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "041195"}, "frames": ["2020-0228-150133_041195_movie_t-3.jpg", "2020-0228-150133_041195_movie_t-2.jpg", "2020-0228-150133_041195_movie_t-1.jpg", "2020-0228-150133_041195_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction and no physical median runs between midrise buildings, the asphalt dry and well marked with wide crosswalks; traffic is moderate. The ego vehicle proceeds in the left lane. A dark hatchback ahead in the ego lane continues straight at a steady pace, effectively setting the ego car's speed. On the right side of the roadway, an oncoming black taxi near the curb approaches the crosswalk and slows while staying in its lane. Farther ahead in the opposing outer lane, a white van with a short queue behind it advances straight without encroaching on the ego lane. Overhead traffic lights are visible at the intersection ahead.", "hazard_reasoning": "The road is clear, no obstacles or vulnerable road users are present, and traffic is orderly, so the driver can proceed normally."}
{"id": "train_06570", "split": "train", "clip_key": "2020-0228-150133_063381_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "063381"}, "frames": ["2020-0228-150133_063381_movie_t-3.jpg", "2020-0228-150133_063381_movie_t-2.jpg", "2020-0228-150133_063381_movie_t-1.jpg", "2020-0228-150133_063381_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial passes shops and dealerships, with two same-direction lanes and oncoming traffic separated by double white lines and a narrow raised median; the pavement is dry and traffic is heavy and slow. A gray sedan directly ahead in the ego lane slows to a crawl because congestion builds in front, constraining the ego vehicle's pace. Slightly ahead to the left, a white box truck creeps forward in the adjacent same-direction lane, remaining parallel to the ego path. In the oncoming lane to the right of the median, a white car approaches and proceeds past without interacting.", "hazard_reasoning": "There is a gray Sedan slowing down in the ego lane because of traffic congestion ahead. The sedan's reduced speed signals congestion up the road, so the driver should slow down to maintain a safe following distance."}
{"id": "train_06571", "split": "train", "clip_key": "2020-0131-135401_031732_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "031732"}, "frames": ["2020-0131-135401_031732_movie_t-3.jpg", "2020-0131-135401_031732_movie_t-2.jpg", "2020-0131-135401_031732_movie_t-1.jpg", "2020-0131-135401_031732_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each direction and a solid centerline has smooth pavement and moderate flow. A white hatchback ahead in the ego lane slows and edges right to maneuver around a small work truck parked along the left edge of the ego lane, constraining the ego vehicle's pace. An oncoming white van approaches in its lane near the centerline, reducing clearance for the maneuver and briefly holding the hatchback. A larger truck stands at the right curb of the opposing lane, narrowing that side but remaining outside the ego path.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego-car, in the ego lane, because of having to maneuver around a truck parked on the left side of the ego lane. The hatchback's deceleration poses a collision risk if the driver does not reduce speed; slowing down will give sufficient reaction time and safe following distance."}
{"id": "train_06572", "split": "train", "clip_key": "titan_clip_766_000564_movie", "source": {"subset": "titan", "scenario": "clip_766", "frame": "000564"}, "frames": ["titan_clip_766_000564_movie_t-3.jpg", "titan_clip_766_000564_movie_t-2.jpg", "titan_clip_766_000564_movie_t-1.jpg", "titan_clip_766_000564_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around truck", "environment_perception": "An urban residential two-way road with a single narrow lane per direction runs slightly uphill, the pavement worn but serviceable, and traffic appears light with no moving vehicles nearby. Ahead on the left in the ego lane, a white truck is parked for unloading, partially blocking the lane and constraining the ego vehicle's path. On the right at the curb, a black minivan is parked under a building, further tightening clearance. At the near left curb, a silver van is parked beside a small work area with cones and materials but remains outside the travel lane. A blue no-parking sign stands on the left, and 30 is painted on the roadway.", "hazard_reasoning": "There is a white truck parked on the left side of the road, in the ego lane, because it is being unloaded. The parked truck partially obstructs the lane, so the driver should carefully manoeuvre to avoid collision."}
{"id": "train_06573", "split": "train", "clip_key": "titan_clip_391_000900_movie", "source": {"subset": "titan", "scenario": "clip_391", "frame": "000900"}, "frames": ["titan_clip_391_000900_movie_t-3.jpg", "titan_clip_391_000900_movie_t-2.jpg", "titan_clip_391_000900_movie_t-1.jpg", "titan_clip_391_000900_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban commercial alley with interlocking brick pavement forms a single narrow shared lane without a divider; the surface is good and traffic is light as the ego vehicle proceeds straight at low speed. A white van ahead along the right curb is stopped with its rear door open, encroaching on the lane and limiting the available space to pass. A pedestrian wearing a white T-shirt and white pants walks away from the ego car along the left side of the road, close to the travel path and may enter the lane. Other pedestrians linger and move near the left storefronts close to the curb, creating potential side conflicts with the vehicle's path.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and white pants, walking at the left side of the road, away from the ego car. The pedestrian walking on the roadway edge poses a risk of stepping into the vehicle path, requiring careful maneuvering to avoid collision."}
{"id": "train_06574", "split": "train", "clip_key": "2020-0207-101955_018976_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "018976"}, "frames": ["2020-0207-101955_018976_movie_t-3.jpg", "2020-0207-101955_018976_movie_t-2.jpg", "2020-0207-101955_018976_movie_t-1.jpg", "2020-0207-101955_018976_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with at least two lanes per direction and no physical median has smooth pavement and light to moderate flow as the ego car approaches a signalized intersection. Ahead in the ego lane, a white truck with a green tarp drives away at a steady pace, effectively setting the ego vehicle's speed. In the right-side oncoming lanes, a box truck and a few cars approach through the intersection and proceed straight, remaining separated by the center line. Overhead traffic lights and lane-direction signs are visible above the crosswalk.", "hazard_reasoning": "There is a white truck with a green tarp driving in the ego lane away from the ego car. The truck may slow down or brake unexpectedly, so the driver should remain vigilant to maintain a safe following distance."}
{"id": "train_06575", "split": "train", "clip_key": "2020-0228-150133_074525_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "074525"}, "frames": ["2020-0228-150133_074525_movie_t-3.jpg", "2020-0228-150133_074525_movie_t-2.jpg", "2020-0228-150133_074525_movie_t-1.jpg", "2020-0228-150133_074525_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial with three lanes in the ego direction runs between mid-rise buildings, with a steel guardrail bordering a parallel roadway on the right; the pavement is dry and traffic moves lightly. A dark minivan travels alongside in the left lane, close to the ego vehicle and slightly ahead, maintaining pace and reducing lateral space. Far ahead in the right lane, a box truck proceeds steadily in the same direction, remaining in view without constraining the ego path. On the parallel roadway to the right beyond the guardrail, several cars move forward, remaining separated from the ego lane. A pedestrian footbridge spans the road ahead.", "hazard_reasoning": "There are no immediate hazards detected on this clear, well-marked roadway, so the driver can continue safely without adjustments."}
{"id": "train_06576", "split": "train", "clip_key": "2020-0131-103016_078095_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "078095"}, "frames": ["2020-0131-103016_078095_movie_t-3.jpg", "2020-0131-103016_078095_movie_t-2.jpg", "2020-0131-103016_078095_movie_t-1.jpg", "2020-0131-103016_078095_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three same-direction lanes, painted dividers, and dry pavement carries moderate traffic. A silver minivan directly ahead in the ego lane accelerates away, opening a gap. In the adjacent left lane, a small box truck ahead rolls slowly and constrains a leftward lane change. To the right, another silver van angles left across broken lines as it merges and may enter the ego lane. Overhead blue guide signs for Route 15 indicate directions toward Kawasaki and nearby districts.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06577", "split": "train", "clip_key": "titan_clip_139_000342_movie", "source": {"subset": "titan", "scenario": "clip_139", "frame": "000342"}, "frames": ["titan_clip_139_000342_movie_t-3.jpg", "titan_clip_139_000342_movie_t-2.jpg", "titan_clip_139_000342_movie_t-1.jpg", "titan_clip_139_000342_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to crossing pedestrian", "environment_perception": "A dense urban street with shops and construction lines the sides as the ego vehicle approaches a zebra crossing on a narrow two-way road with one lane each direction, no median, smooth pavement, and light traffic. Immediately ahead, a pedestrian carrying a backpack crosses on the crosswalk from right to left through the ego lane, controlling the vehicle's pace. Another pedestrian on the right curb begins to step onto the crossing and may follow into the lane. There are no nearby vehicles traveling in the same direction and no oncoming traffic at the crossing. Orange cones, scaffolding, and workers along the right sidewalk mark a roadside work zone that slightly narrows the edge of the carriageway.", "hazard_reasoning": "There is a pedestrian carrying a backpack and crossing the street, in a pedestrian crossing, toward the left side of the road. The driver should yield because the pedestrian is on the marked crosswalk and has right of way."}
{"id": "train_06578", "split": "train", "clip_key": "titan_clip_783_000444_movie", "source": {"subset": "titan", "scenario": "clip_783", "frame": "000444"}, "frames": ["titan_clip_783_000444_movie_t-3.jpg", "titan_clip_783_000444_movie_t-2.jpg", "titan_clip_783_000444_movie_t-1.jpg", "titan_clip_783_000444_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with no median leads to a zebra crossing at an intersection; the single narrow carriageway appears smooth with light motor traffic. Ahead at the crosswalk, several pedestrians move right to left across the road, occupying the ego lane and constraining progress. On the right edge near a row of parked bicycles, a tall pedestrian wearing a black T-shirt and green shorts carries a side bag and walks forward along the roadway, close enough that he may step into the lane. On the left, a white van is stopped curbside with its sliding door open, and a woman walks from that side toward the crossing, adding to the pedestrian flow across the ego path.", "hazard_reasoning": "There is a tall pedestrian, wearing a black t-shirt and green shorts, carrying a side bag, walking on the right side of the road. The pedestrian could step into the vehicle path unexpectedly, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_06579", "split": "train", "clip_key": "titan_clip_934_000216_movie", "source": {"subset": "titan", "scenario": "clip_934", "frame": "000216"}, "frames": ["titan_clip_934_000216_movie_t-3.jpg", "titan_clip_934_000216_movie_t-2.jpg", "titan_clip_934_000216_movie_t-1.jpg", "titan_clip_934_000216_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban street forms a narrow two-way road without a median, the pavement is smooth, and traffic is light but briefly impeded. Ahead in the ego lane, a white van is stopped in the middle of the road, constraining the ego vehicle's path. Farther ahead at the right curb, a box truck is stationary with its rear toward the street, narrowing the available space in the same direction. The oncoming side to the right of centerline is clear of moving vehicles. Several pedestrians are on the sidewalks; one near the right curb beside the shop frontage stands close to the roadway while others walk along the left side.", "hazard_reasoning": "A white van stopped in the middle of the road. Drivers should slow down to safely navigate around the stationary vehicle."}
{"id": "train_06580", "split": "train", "clip_key": "2020-0127-132751_076326_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "076326"}, "frames": ["2020-0127-132751_076326_movie_t-3.jpg", "2020-0127-132751_076326_movie_t-2.jpg", "2020-0127-132751_076326_movie_t-1.jpg", "2020-0127-132751_076326_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with one left-side lane in the ego direction and an opposite lane divided by a wide striped median runs between tall buildings; the pavement looks smooth and traffic is moderate but briefly queueing. A white SUV directly ahead in the ego lane is stopped for a red traffic signal, holding the ego vehicle, with a white van farther ahead also waiting in the same line. To the right, an oncoming coach bus travels past in its lane beyond the striped buffer and does not impede the ego lane. The suspended signal ahead shows red for this approach. Guardrails line the left edge and no obstacles encroach on the roadway.", "hazard_reasoning": "There is a white SUV stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid a rear-end collision with the stationary vehicle at the intersection."}
{"id": "train_06581", "split": "train", "clip_key": "titan_clip_167_000288_movie", "source": {"subset": "titan", "scenario": "clip_167", "frame": "000288"}, "frames": ["titan_clip_167_000288_movie_t-3.jpg", "titan_clip_167_000288_movie_t-2.jpg", "titan_clip_167_000288_movie_t-1.jpg", "titan_clip_167_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrians.", "environment_perception": "A narrow urban back street in Japan has a single shared two-way lane, no median, smooth pavement, and light traffic with no oncoming vehicles visible. Ahead on the right edge of the lane, two pedestrians wearing blue jackets and backpacks walk away from the ego vehicle, at times close to the roadway and relevant because they may encroach into the ego path. On the left by a storefront, a scooter is parked beside a row of bicycles, narrowing the passage. Buildings and utility poles stand tight to the curb on both sides, creating a confined corridor with limited lateral clearance.", "hazard_reasoning": "There are two pedestrians wearing a blue suit jacket and a backpack, walking away from the ego car on the right side of the road. The driver should manoeuvre carefully around the pedestrians because they are walking close to the curb and could step into the traffic lane unexpectedly."}
{"id": "train_06582", "split": "train", "clip_key": "titan_clip_749_000504_movie", "source": {"subset": "titan", "scenario": "clip_749", "frame": "000504"}, "frames": ["titan_clip_749_000504_movie_t-3.jpg", "titan_clip_749_000504_movie_t-2.jpg", "titan_clip_749_000504_movie_t-1.jpg", "titan_clip_749_000504_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the worker", "environment_perception": "An urban two-way side street with no center divider is partially blocked by a curbside work zone; the pavement is intact and traffic is light and slow. On the left ahead, a man wearing a blue shirt and pants, a white helmet, and a yellow vest stands in front of the ego car directing traffic around the work zone, controlling the vehicle's pace. Farther ahead near the center-right, several pedestrians walk away along the roadway past the trucks and could drift into the ego path. Another worker stands beside a blue mixer truck on the left close to the lane, monitoring passing vehicles. Green-white cones, ropes, and parked construction trucks narrow the left side, and a parked bicycle and shopfront fixtures line the right edge.", "hazard_reasoning": "There is man, wearing a blue shirt and pants, a white helmet and yellow vest, standing on the left side of the road, in front of the ego car, because he is directing traffic. The worker is directing traffic and may step into the vehicle's path, so the driver must manoeuvre around him to maintain safety."}
{"id": "train_06583", "split": "train", "clip_key": "2020-0129-144857_057564_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "057564"}, "frames": ["2020-0129-144857_057564_movie_t-3.jpg", "2020-0129-144857_057564_movie_t-2.jpg", "2020-0129-144857_057564_movie_t-1.jpg", "2020-0129-144857_057564_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs beneath a pedestrian overpass, divided from oncoming lanes by a guardrail; the pavement is dry and traffic is moderate and steady. A white box truck drives ahead in the ego lane moving away from the camera, effectively setting the pace. To the right of the median, several oncoming cars, including a dark hatchback nearest the camera, approach in their lanes without affecting the ego path. A short striped taper on the right indicates a side lane ending as the road continues past mid-rise buildings.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06584", "split": "train", "clip_key": "titan_clip_1240_000156_movie", "source": {"subset": "titan", "scenario": "clip_1240", "frame": "000156"}, "frames": ["titan_clip_1240_000156_movie_t-3.jpg", "titan_clip_1240_000156_movie_t-2.jpg", "titan_clip_1240_000156_movie_t-1.jpg", "titan_clip_1240_000156_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with no center line and smooth pavement is shown, and traffic is light. The ego vehicle proceeds along the left side as the road bends slightly right. On the right edge ahead, two pedestrians walk toward the ego car along the roadside; one carries a handbag and their closeness to the lane means they could enter the path. Farther ahead in the opposing lane, a silver van approaches slowly, constraining space as it passes the walkers. A black car is parked along the right curb near a utility pole, further narrowing the roadway. A no-parking sign is posted on the pole.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking on the left side of the road, toward the ego car. The driver should manoeuvre carefully to avoid a potential collision with the pedestrian in the roadway."}
{"id": "train_06585", "split": "train", "clip_key": "titan_clip_1016_000186_movie", "source": {"subset": "titan", "scenario": "clip_1016", "frame": "000186"}, "frames": ["titan_clip_1016_000186_movie_t-3.jpg", "titan_clip_1016_000186_movie_t-2.jpg", "titan_clip_1016_000186_movie_t-1.jpg", "titan_clip_1016_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban two-way street with one lane per direction and a solid centerline curves gently right between mid-rise buildings; the pavement looks smooth and traffic is light. On the left edge ahead, a pedestrian pushing a green cart walks toward the ego vehicle along the roadway, close to the ego lane and potentially edging into it. Farther ahead in the opposing lane, a white car approaches in the oncoming direction while maintaining its lane and distance. No traffic signals or unusual signs are prominent, and no other hazards are visible.", "hazard_reasoning": "There is a pedestrian pushing a green cart and walking on the left side of the road, toward the ego car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should be aware to avoid a collision."}
{"id": "train_06586", "split": "train", "clip_key": "2020-0226-140503_083006_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "083006"}, "frames": ["2020-0226-140503_083006_movie_t-3.jpg", "2020-0226-140503_083006_movie_t-2.jpg", "2020-0226-140503_083006_movie_t-1.jpg", "2020-0226-140503_083006_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial carries heavy, slow traffic on smooth pavement, with three lanes in the ego direction and opposing lanes on the right and no physical median. Directly ahead, a white hatchback in the ego lane is stopped with brake lights on because congestion blocks the way, holding the ego vehicle. In the lane to the left, a large construction truck waits in the same queue, further constraining progress and sightlines. At the far left by the curb, a small white delivery van creeps forward alongside the jam. In the right-side opposing lanes, a motorcycle approaches and passes by within its lane, separated from the ego path.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop immediately to avoid colliding with the halted vehicle."}
{"id": "train_06587", "split": "train", "clip_key": "2020-0217-144444_012179_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "012179"}, "frames": ["2020-0217-144444_012179_movie_t-3.jpg", "2020-0217-144444_012179_movie_t-2.jpg", "2020-0217-144444_012179_movie_t-1.jpg", "2020-0217-144444_012179_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian safely", "environment_perception": "An urban two-way road curves right with one lane each way, smooth pavement, and light traffic; a rail-lined sidewalk runs along the left and a planted strip borders the right, with a speed-limit sign visible ahead. A white mini-truck ahead in the ego lane proceeds slowly near the curb, effectively setting the pace through the bend. A few oncoming cars appear around the curve on the right side of the center line and continue past without encroaching. Pedestrians move along both sidewalks, and a helmeted person stands at the left roadside guiding traffic and watching the lane.", "hazard_reasoning": "There is a pedestrian wearing a helmet, standing on the left side of the road, because they are guiding the traffic. The pedestrian guiding traffic may step into the roadway unexpectedly, so you should manoeuvre around them safely."}
{"id": "train_06588", "split": "train", "clip_key": "2020-0206-101736_022130_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "022130"}, "frames": ["2020-0206-101736_022130_movie_t-3.jpg", "2020-0206-101736_022130_movie_t-2.jpg", "2020-0206-101736_022130_movie_t-1.jpg", "2020-0206-101736_022130_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with the ego vehicle in a single left-side lane runs alongside a separated elevated carriageway, divided by a green guardrail median; the pavement is dry and smooth and traffic is light. Ahead in the ego lane a black van drives away from the camera at a steady speed, remaining in lane. On the adjacent right carriageway an oncoming black car approaches and passes, clearly separated by the barrier and not affecting the ego path. Parked vehicles line the left curb in marked bays, leaving the travel lane clear, and a pedestrian overpass appears ahead.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. The van ahead may slow or brake unexpectedly, so you should maintain a safe following distance by following it."}
{"id": "train_06589", "split": "train", "clip_key": "2020-0205-152530_039963_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "039963"}, "frames": ["2020-0205-152530_039963_movie_t-3.jpg", "2020-0205-152530_039963_movie_t-2.jpg", "2020-0205-152530_039963_movie_t-1.jpg", "2020-0205-152530_039963_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of hatchback changing lanes", "environment_perception": "An urban multi-lane arterial with smooth pavement carries moderate, steady same-direction traffic and no physical median is visible. A black hatchback directly ahead of the ego car moves right, changing into the adjacent lane and briefly constraining the ego vehicle's pace. Farther ahead-right, a city bus continues straight in the outer lane, slowing the flow in that lane. A white minivan ahead slightly right proceeds straight at a similar speed and may merge back into the center stream. Several pedestrians wait at the left-side curb near the crosswalk, standing clear of the roadway.", "hazard_reasoning": "There is a black hatchback in front of the ego car, changing to the right lane. This maneuver could encroach on your lane, so be ready to adjust your speed."}
{"id": "train_06590", "split": "train", "clip_key": "2020-0204-103442_018132_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "018132"}, "frames": ["2020-0204-103442_018132_movie_t-3.jpg", "2020-0204-103442_018132_movie_t-2.jpg", "2020-0204-103442_018132_movie_t-1.jpg", "2020-0204-103442_018132_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under elevated structures, with two same-direction lanes; the ego car is in the right lane beside a concrete barrier, and traffic is heavy with a stopped queue. A white SUV immediately ahead in the ego lane is halted for a red traffic light, directly constraining the ego vehicle. A large coach bus in the adjacent left lane is stopped slightly ahead alongside, leaving little lateral clearance and blocking the left view. Additional vehicles queue farther ahead in both lanes, barely moving. Blue overhead guide signs point toward Hachioji, Meguro, and Higashinakano. A separated parallel roadway on the right carries opposing traffic behind a barrier and poses no interaction.", "hazard_reasoning": "There is a white SUV stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop promptly to avoid a rear-end collision with the stationary vehicle."}
{"id": "train_06591", "split": "train", "clip_key": "titan_clip_178_000078_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_178_000078_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_178_000078_movie_t-3_augB1.jpg", "titan_clip_178_000078_movie_t-2_augB1.jpg", "titan_clip_178_000078_movie_t-1_augB1.jpg", "titan_clip_178_000078_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with no centerline runs between buildings, the ego car keeping to the left on smooth pavement; traffic is light. In the middle of the road ahead, a pedestrian in black pants and a white shirt walks away from the ego car along the travel path, occupying the lane and constraining pace. Farther ahead on the left, a white van is stopped at the curb and protrudes slightly into the roadway, narrowing the passage. A second person stands at a building entrance on the right near the camera, remaining on the sidewalk.", "hazard_reasoning": "There is a pedestrian in the middle of the road, wearing black pants and a white shirt, walking away from the ego car. The pedestrian is crossing ahead in the travel lane and may step into your path, so slow down to maintain safety."}
{"id": "train_06592", "split": "train", "clip_key": "2020-0204-103442_086462_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "086462"}, "frames": ["2020-0204-103442_086462_movie_t-3.jpg", "2020-0204-103442_086462_movie_t-2.jpg", "2020-0204-103442_086462_movie_t-1.jpg", "2020-0204-103442_086462_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to traffic congestion ahead", "environment_perception": "An urban two-lane road with one lane each direction, no median, and smooth pavement leads to a signalized intersection ahead, and overall traffic appears light. The ego car travels in the left lane behind a gray van directly ahead in the same lane, which is stopped due to congestion at the intersection and constrains the ego car's pace. An oncoming heavy truck in the right lane moves slowly near the junction and continues past without entering the ego lane. A 40 km/h speed-limit sign stands on the right, and overhead traffic lights mark the intersection ahead.", "hazard_reasoning": "There is a gray van stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead at the intersection. The driver should yield to the congestion ahead to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_06593", "split": "train", "clip_key": "titan_clip_1362_000174_movie", "source": {"subset": "titan", "scenario": "clip_1362", "frame": "000174"}, "frames": ["titan_clip_1362_000174_movie_t-3.jpg", "titan_clip_1362_000174_movie_t-2.jpg", "titan_clip_1362_000174_movie_t-1.jpg", "titan_clip_1362_000174_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A narrow urban street between buildings has no marked centerline, the pavement looks smooth, and traffic is light with no moving vehicles ahead. At the crosswalk ahead, a pedestrian in a white shirt and black pants crosses the road toward the right side, moving through the ego lane and briefly controlling the pace. Numerous bicycles are parked along the right curb by blue cones near the crosswalk, reducing lateral clearance.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and crossing the road, in a pedestrian crossing, to the right side. You should slow down to yield and avoid a collision with the crossing pedestrian."}
{"id": "train_06594", "split": "train", "clip_key": "titan_clip_432_000534_movie", "source": {"subset": "titan", "scenario": "clip_432", "frame": "000534"}, "frames": ["titan_clip_432_000534_movie_t-3.jpg", "titan_clip_432_000534_movie_t-2.jpg", "titan_clip_432_000534_movie_t-1.jpg", "titan_clip_432_000534_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "be aware of the pedestrian ahead", "environment_perception": "An urban two-way street with one narrow lane per direction runs between mid-rise buildings, with no median, smooth asphalt, and light traffic. A flatbed truck is stopped along the left curb with cones, and a worker on its bed handles materials as the truck partly intrudes into the ego lane, narrowing the available width. A pedestrian wearing a cap, black pants, and a yellow vest stands on the right side of the road by the curb, stationary and watching the lane. Far ahead, a white car travels in the same direction in the left-hand lane and moves steadily away. Guardrails line the right sidewalk, and no prominent traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a cap, black pants, and a yellow vest, standing at the right side of the road. The pedestrian's proximity to the traffic lane means they could step into the roadway unexpectedly, so drivers should be aware of the pedestrian ahead."}
{"id": "train_06595", "split": "train", "clip_key": "titan_clip_792_000528_movie", "source": {"subset": "titan", "scenario": "clip_792", "frame": "000528"}, "frames": ["titan_clip_792_000528_movie_t-3.jpg", "titan_clip_792_000528_movie_t-2.jpg", "titan_clip_792_000528_movie_t-1.jpg", "titan_clip_792_000528_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "A narrow urban neighborhood street with shops on both sides forms a two-way roadway without a centerline; the pavement looks smooth and traffic is very light with no oncoming vehicles. Ahead in the ego lane, a cyclist in dark pants rides in the middle of the road moving away from the camera and effectively constrains the ego vehicle's pace. No other moving road users appear nearby. Colorful shop banners and closely spaced utility poles line the curbs. Several bicycles are parked along the left edge near the roadway, slightly narrowing the usable space but remaining clear of the travel path.", "hazard_reasoning": "There is a cyclist wearing black pants and cycling, in the middle of the road, away from the ego-car. The cyclist may slow or change position unexpectedly, so the driver should maintain a safe buffer by following the vehicle ahead."}
{"id": "train_06596", "split": "train", "clip_key": "2020-0226-101332_049311_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "049311"}, "frames": ["2020-0226-101332_049311_movie_t-3.jpg", "2020-0226-101332_049311_movie_t-2.jpg", "2020-0226-101332_049311_movie_t-1.jpg", "2020-0226-101332_049311_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead.", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between office buildings, separated from oncoming traffic by a metal railing median; the damp pavement carries a moderate, steady flow under a pedestrian overpass. Ahead in the ego lane, a gray van drives steadily and leads the lane. In the adjacent left lane, a white sedan and a green taxi travel alongside with little speed change, keeping position next to the ego vehicle. To the right beyond the median, oncoming cars move smoothly in the opposite direction. A distant traffic signal ahead displays green.", "hazard_reasoning": "There is a gray van driving in the ego lane. Maintain a safe distance and follow the gray van at its speed to avoid collision."}
{"id": "train_06597", "split": "train", "clip_key": "2020-0226-101332_022228_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "022228"}, "frames": ["2020-0226-101332_022228_movie_t-3.jpg", "2020-0226-101332_022228_movie_t-2.jpg", "2020-0226-101332_022228_movie_t-1.jpg", "2020-0226-101332_022228_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with a single narrow lane in each direction curves gently right; the pavement is worn but clear and traffic stays light. A silver van ahead in the ego lane drives away from the ego car at a steady speed, remaining centered and setting the pace. An oncoming sedan appears farther ahead in the opposite lane and continues straight past the curve without affecting the ego path. A pedestrian stands near a storefront on the left sidewalk and remains off the roadway. Signal hardware and a junction are visible ahead with no evident change in flow.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car. Since the state of the upcoming traffic lights is unclear, following the vehicle ahead helps maintain a safe distance and speed."}
{"id": "train_06598", "split": "train", "clip_key": "titan_clip_645_000108_movie", "source": {"subset": "titan", "scenario": "clip_645", "frame": "000108"}, "frames": ["titan_clip_645_000108_movie_t-3.jpg", "titan_clip_645_000108_movie_t-2.jpg", "titan_clip_645_000108_movie_t-1.jpg", "titan_clip_645_000108_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A dense urban street with a single narrow lane each way and green-painted shoulders has smooth pavement and light traffic. An oncoming yellow sedan approaches on the right side of its lane, moving toward the ego car and reducing lateral clearance, with another vehicle trailing farther back. On the right, several pedestrians walk along the curb outside storefronts, some close to the roadway and constraining the ego car's pace. On the left sidewalk, a woman with an umbrella and others proceed forward near the curb but stay off the road. No traffic signals are visible.", "hazard_reasoning": "There is a yellow sedan driving on the right side of the lane, moving toward the ego car. The sedan is approaching in the wrong lane, so the driver should slow down to avoid a potential collision with this oncoming vehicle."}
{"id": "train_06599", "split": "train", "clip_key": "2020-0225-102455_028004_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "028004"}, "frames": ["2020-0225-102455_028004_movie_t-3.jpg", "2020-0225-102455_028004_movie_t-2.jpg", "2020-0225-102455_028004_movie_t-1.jpg", "2020-0225-102455_028004_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist in the left lane", "environment_perception": "An urban multi-lane arterial with a metal guardrail median runs straight ahead; two same-direction lanes lie to the left of the divider, the asphalt dry and smooth, and traffic flows at a moderate, steady pace. A cyclist wearing black pants and a blue jacket rides ahead in the adjacent left lane, moving away from the ego car and only relevant if the ego merges left. A small dark hatchback directly ahead in the ego lane proceeds steadily and sets the pace. On the opposite side of the median, several vans and cars approach as oncoming traffic without interacting. The number 50 is painted on the road surface as a speed marking, and pedestrians line the sidewalks without entering the street.", "hazard_reasoning": "There is a cyclist wearing black pants and a blue jacket and cycling in the left lane, away from the ego car. The cyclist shares the lane and may change path or slow unexpectedly, so the driver should be aware to avoid potential collision."}
{"id": "train_06600", "split": "train", "clip_key": "2020-0217-110854_020869_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-110854_020869_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-110854_020869_movie_t-3_augB1.jpg", "2020-0217-110854_020869_movie_t-2_augB1.jpg", "2020-0217-110854_020869_movie_t-1_augB1.jpg", "2020-0217-110854_020869_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a fenced median and good pavement runs straight toward a signalized intersection. Traffic in the ego's direction is moderate to heavy and slowing into a queue. A motorcycle rider in a black suit and helmet travels directly ahead in the ego lane, slowing because of congestion and effectively setting the ego car's pace. A white van farther ahead in the same lane decelerates near the stop line, contributing to the queue. In the adjacent left lane, a black wagon moves ahead at similar speed without changing lanes. Across the median on the right, several oncoming cars proceed through the junction and pass by. Overhead traffic signals and gantry signs span the roadway at the intersection.", "hazard_reasoning": "There is a motorcycle cyclist wearing a black riding suit and a helmet, cycling in the ego lane, slowing down because there is traffic congestion, in front of the ego car. The driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_06601", "split": "train", "clip_key": "titan_clip_919_000486_movie", "source": {"subset": "titan", "scenario": "clip_919", "frame": "000486"}, "frames": ["titan_clip_919_000486_movie_t-3.jpg", "titan_clip_919_000486_movie_t-2.jpg", "titan_clip_919_000486_movie_t-1.jpg", "titan_clip_919_000486_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way carriageway has smooth asphalt and no divider, and vehicle traffic is light while pedestrian activity is heavy. On the right edge near the curb, a pedestrian in a blue sweater walks toward the ego vehicle in the roadway because a white truck with cones blocks the path, and the person may drift into the ego lane. Farther ahead, multiple pedestrians cross the street midblock from left to right, constraining the ego vehicle's pace. On the left, people linger beside the parked white truck within a coned work area and occasionally step near the lane. No salient signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue sweater, walking towards the ego car, on the right side of the road, because of a white truck blocking the path. The pedestrian may veer into the vehicle's lane to bypass the obstruction, so the driver should slow down to avoid a potential collision."}
{"id": "train_06602", "split": "train", "clip_key": "2020-0212-102546_018022_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "018022"}, "frames": ["2020-0212-102546_018022_movie_t-3.jpg", "2020-0212-102546_018022_movie_t-2.jpg", "2020-0212-102546_018022_movie_t-1.jpg", "2020-0212-102546_018022_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of the pedestrian", "environment_perception": "An urban two-way street with one lane each direction and a solid centerline runs straight between mid-rise buildings; the pavement is dry and traffic is moderate. A white hatchback ahead in the ego lane proceeds steadily and sets the pace. An oncoming box truck approaches in the right lane and continues straight within its lane. On the left sidewalk by a zebra crossing, a pedestrian wearing a purple coat and black pants waits to cross at the curb where the crosswalk meets the ego lane. Additional oncoming cars follow behind the truck, and temporary barricades line the left sidewalk but remain off the roadway.", "hazard_reasoning": "There is a pedestrian wearing a purple coat and black pants, and waiting to cross on the left side of the road. The driver should be cautious because the pedestrian might step onto the roadway, requiring a speed reduction to avoid a collision."}
{"id": "train_06603", "split": "train", "clip_key": "2020-0214-145407_066977_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "066977"}, "frames": ["2020-0214-145407_066977_movie_t-3.jpg", "2020-0214-145407_066977_movie_t-2.jpg", "2020-0214-145407_066977_movie_t-1.jpg", "2020-0214-145407_066977_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction runs between tall buildings, with a low hedge median on the right separating opposing traffic; the wet pavement and closely spaced vehicles indicate heavy, stop-and-go flow. A white sedan directly ahead in the ego lane is stopped for the red traffic signal, holding the ego car. In the adjacent left lane, a white van slightly ahead is also stopped in the queue toward the intersection, matching the halt in the ego lane. Farther ahead, a small truck in the same direction creeps toward the signal as space opens. An overhead signal is clearly red above the junction.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid a collision with the stationary vehicle at the intersection."}
{"id": "train_06604", "split": "train", "clip_key": "2020-0204-150838_039172_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "039172"}, "frames": ["2020-0204-150838_039172_movie_t-3.jpg", "2020-0204-150838_039172_movie_t-2.jpg", "2020-0204-150838_039172_movie_t-1.jpg", "2020-0204-150838_039172_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with worn but dry pavement carries heavy, slow traffic; oncoming traffic flows separately on the far right beyond a line of cones. A white van directly ahead in the ego lane is stopped due to congestion and holds the ego vehicle's pace. A small white microvan just to the left runs parallel at low speed slightly ahead, limiting room to change lanes. Farther ahead to the right, a small covered truck crawls beside the cone taper in the adjacent lane and could merge left into the ego lane. An overhead blue sign shows lane-direction arrows.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of traffic congestion ahead, in front of the ego car. You should stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_06605", "split": "train", "clip_key": "titan_clip_650_000432_movie", "source": {"subset": "titan", "scenario": "clip_650", "frame": "000432"}, "frames": ["titan_clip_650_000432_movie_t-3.jpg", "titan_clip_650_000432_movie_t-2.jpg", "titan_clip_650_000432_movie_t-1.jpg", "titan_clip_650_000432_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential street with a very narrow two-way carriageway lacking a centerline, smooth pavement, and no moving vehicles, so traffic is light. Ahead on the right edge, a woman wearing a patterned dress and holding a handbag walks away from the ego car along the roadway, staying near the curb in the vehicle's path. Slightly farther ahead on the right, another woman stands beside the hedge at the curb, facing the street and lingering near the travel lane. Orange construction fencing on the left side forms a work zone that encroaches into the lane and narrows the passage.", "hazard_reasoning": "There is a woman wearing a patterned dress, holding a handbag and walking on the right side of the road, away from the ego car. The driver should slow down to allow more reaction time if she steps into the roadway unexpectedly, especially given the limited visibility ahead due to the tree and barrier."}
{"id": "train_06606", "split": "train", "clip_key": "2020-0212-102546_047462_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "047462"}, "frames": ["2020-0212-102546_047462_movie_t-3.jpg", "2020-0212-102546_047462_movie_t-2.jpg", "2020-0212-102546_047462_movie_t-1.jpg", "2020-0212-102546_047462_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road in left-hand traffic runs under an elevated structure and curves gently right; the pavement appears smooth with no median, and traffic flows at a moderate pace. A silver minivan ahead in the ego lane moves with the stream and modestly constrains the ego vehicle's speed. Farther ahead, a brown truck continues pulling away in the same lane, increasing the gap. On the left edge by the curb, a black taxi is stopped and remains clear of the ego path.", "hazard_reasoning": "There is a brown truck driving away from the ego car, because of the green traffic light, in front of the ego car. The driver should follow the vehicle ahead to maintain safe distance and comply with the upcoming signal."}
{"id": "train_06607", "split": "train", "clip_key": "2020-0214-145407_014671_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "014671"}, "frames": ["2020-0214-145407_014671_movie_t-3.jpg", "2020-0214-145407_014671_movie_t-2.jpg", "2020-0214-145407_014671_movie_t-1.jpg", "2020-0214-145407_014671_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian crossing ahead", "environment_perception": "An urban multi-lane arterial with painted lane dividers and no physical median extends straight on a cloudy day; the pavement looks sound and traffic is moderate with a denser queue farther ahead. A box truck directly ahead in the ego lane continues straight and effectively sets the ego vehicle's pace. To the right, a white mini-van in the adjacent lane overtakes and proceeds ahead. On the left at a marked crosswalk, a pedestrian wearing a black jacket and carrying a handbag crosses the street away from the ego car, moving across the roadway where the path could intersect the near-left edge of the ego lane.", "hazard_reasoning": "There is a pedestrian wearing a black jacket and carrying a handbag, crossing the street at a pedestrian crosswalk, moving away from the ego car. The pedestrian may continue stepping into the vehicle's path, so the driver should be prepared and maintain awareness to avoid potential conflict."}
{"id": "train_06608", "split": "train", "clip_key": "titan_clip_791_000048_movie", "source": {"subset": "titan", "scenario": "clip_791", "frame": "000048"}, "frames": ["titan_clip_791_000048_movie_t-3.jpg", "titan_clip_791_000048_movie_t-2.jpg", "titan_clip_791_000048_movie_t-1.jpg", "titan_clip_791_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian waving", "environment_perception": "An urban two-way street with one lane each direction has smooth pavement, no median, and light traffic. On the left edge ahead, a helmeted pedestrian waves an orange baton and walks backward, signaling the ego vehicle to proceed while directing traffic close to the lane. Ahead to the right in the oncoming lane, a small white truck and another light vehicle wait near the curb, narrowing the available width and influencing the ego car's pace. Metal guardrails line both sides, creating a confined corridor.", "hazard_reasoning": "There is a pedestrian wearing a helmet, waving the ego car forward with an orange baton, and walking backward, on the left side of the road. Their gesturing and backward movement are unpredictable, so be aware of their actions."}
{"id": "train_06609", "split": "train", "clip_key": "titan_clip_455_000186_movie", "source": {"subset": "titan", "scenario": "clip_455", "frame": "000186"}, "frames": ["titan_clip_455_000186_movie_t-3.jpg", "titan_clip_455_000186_movie_t-2.jpg", "titan_clip_455_000186_movie_t-1.jpg", "titan_clip_455_000186_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "An urban narrow two-way street without a center line curves gently right, paved with patterned cobblestones; traffic is light with no oncoming vehicles visible. Ahead on the left, a box truck is parked with its rear open as it is being loaded, protruding slightly into the travel lane and narrowing the passage. A pedestrian by the left crosswalk near the parking lot entrance walks along the curb toward this truck and then lingers at the edge, close to the lane. Beyond the parked truck the road up the hill appears clear.", "hazard_reasoning": "There is a parked truck on the left side of the road, because it is being loaded. This partially obstructing truck reduces visibility of pedestrians stepping into the road, so the driver should manoeuvre around it."}
{"id": "train_06610", "split": "train", "clip_key": "2020-0225-145150_023524_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "023524"}, "frames": ["2020-0225-145150_023524_movie_t-3.jpg", "2020-0225-145150_023524_movie_t-2.jpg", "2020-0225-145150_023524_movie_t-1.jpg", "2020-0225-145150_023524_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban sunken two-way road with high concrete retaining walls and streetlights runs straight, one lane per direction separated by an orange center line; the pavement is dry and smooth, and traffic is light with no visible oncoming flow. A silver van drives ahead in the ego lane, proceeding straight at a steady pace with roof cargo boxes and effectively setting the ego vehicle's speed. No notable signals or signs are visible, and the opposite lane remains empty.", "hazard_reasoning": "There is a silver van driving in the ego lane. The van ahead might brake unexpectedly, so the driver should be aware and maintain a safe following distance."}
{"id": "train_06611", "split": "train", "clip_key": "2020-0227-153144_008508_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "008508"}, "frames": ["2020-0227-153144_008508_movie_t-3.jpg", "2020-0227-153144_008508_movie_t-2.jpg", "2020-0227-153144_008508_movie_t-1.jpg", "2020-0227-153144_008508_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop for crossing cyclist.", "environment_perception": "An urban intersection opens onto a two-way multi-lane road with a narrow center median and smooth pavement, and traffic is light with vehicles moving steadily. Directly ahead, a cyclist wearing a backpack and a mask rides from the left sidewalk to the right across the marked crosswalk in front of the vehicle, occupying the ego path. On the right half of the roadway, an oncoming white van approaches the intersection and slows near the crosswalk while keeping to its lane. Farther up the left half, a car continues straight in the same direction, loosely pacing the flow. Overhead traffic signals span the junction, though their aspects are not clear.", "hazard_reasoning": "There is a cyclist wearing a backpack and a mask, cycling from the left side of the street to the right side, in a marked crossing in front of the ego-car. The driver should stop to yield and avoid collision with the crossing cyclist."}
{"id": "train_06612", "split": "train", "clip_key": "titan_clip_880_000462_movie", "source": {"subset": "titan", "scenario": "clip_880", "frame": "000462"}, "frames": ["titan_clip_880_000462_movie_t-3.jpg", "titan_clip_880_000462_movie_t-2.jpg", "titan_clip_880_000462_movie_t-1.jpg", "titan_clip_880_000462_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with a single carriageway and one lane each way has smooth pavement and light traffic, though parked vehicles on both curbs narrow the roadway. A white van drives ahead in the ego lane at low speed, setting the ego car's pace. Farther ahead on the right, a large box truck is stopped in the oncoming lane with its rear open, partly encroaching into the roadway and constricting the passage. Beside the truck, a worker unloads items at the curb and moves near the edge of the lane. Stacks of plastic crates rest on the road by the truck.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane. It may stop or slow down unexpectedly, so the driver should follow it to maintain safe spacing and react promptly."}
{"id": "train_06613", "split": "train", "clip_key": "2020-0214-145407_022267_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "022267"}, "frames": ["2020-0214-145407_022267_movie_t-3.jpg", "2020-0214-145407_022267_movie_t-2.jpg", "2020-0214-145407_022267_movie_t-1.jpg", "2020-0214-145407_022267_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with two lanes in the ego direction runs alongside trees and a median, the pavement is in good condition and traffic is light to moderate. A brown dump truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. A black hatchback in the adjacent right lane moves steadily forward slightly ahead, continuing straight while passing the slowing truck without merging. Across the landscaped median, a few vehicles travel the opposite direction at a steady pace and remain separated, and no obstacles or work zones are visible.", "hazard_reasoning": "There is a brown truck slowing in front of the ego car, in the ego lane. The driver should reduce speed to maintain a safe following distance and avoid rear-ending the decelerating vehicle."}
{"id": "train_06614", "split": "train", "clip_key": "titan_clip_891_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_891_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_891_000198_movie_t-3_augB1.jpg", "titan_clip_891_000198_movie_t-2_augB1.jpg", "titan_clip_891_000198_movie_t-1_augB1.jpg", "titan_clip_891_000198_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of the pedestrian crossing ahead.", "environment_perception": "A dense urban street with one narrow lane and no median runs between shops on the left and a park wall on the right; the pavement looks smooth and traffic is light to moderate. Parked and stopping cars along the left curb narrow the usable lane. Mid-distance, a person in a gray T-shirt crosses the roadway from right to left in the middle of the road, moving through the ego lane and directly affecting its path. Farther ahead, a cyclist rides along the center of the lane away from the camera, setting a slower pace for following vehicles. Additional cars ahead in the same direction roll slowly near the curbside stops.", "hazard_reasoning": "There is a pedestrian wearing a gray t-shirt, crossing the street in the middle of the road, from the right side to the left side. The pedestrian is crossing unexpectedly in the lane of travel, posing a risk of collision, so the driver should be alert and cautious."}
{"id": "train_06615", "split": "train", "clip_key": "titan_clip_713_000072_movie", "source": {"subset": "titan", "scenario": "clip_713", "frame": "000072"}, "frames": ["titan_clip_713_000072_movie_t-3.jpg", "titan_clip_713_000072_movie_t-2.jpg", "titan_clip_713_000072_movie_t-1.jpg", "titan_clip_713_000072_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing the road", "environment_perception": "An urban side street with roadside railings and a small kiosk comes into view; the narrow carriageway has no marked centerline or median, the pavement is smooth, and traffic is light with no vehicles ahead. Ahead on the right near the kiosk, a pedestrian wearing a white shirt steps out and walks in the middle of the road toward the left side, potentially entering the ego vehicle's path. Another man in a white shirt exits the doorway on the right and pauses at the curb without stepping into the lane. A marked crosswalk lies near the camera position across the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking in the middle of the road, toward the left side. This unexpected presence in the roadway increases collision risk and requires the driver to yield immediately."}
{"id": "train_06616", "split": "train", "clip_key": "titan_clip_438_000348_movie", "source": {"subset": "titan", "scenario": "clip_438", "frame": "000348"}, "frames": ["titan_clip_438_000348_movie_t-3.jpg", "titan_clip_438_000348_movie_t-2.jpg", "titan_clip_438_000348_movie_t-1.jpg", "titan_clip_438_000348_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with interlocking-brick pavement and no center markings carries light, slow traffic. Ahead in the ego lane, a small electric cart moves away at low speed, controlling the ego vehicle's pace. On the left and very near, a cyclist rides toward the ego vehicle along the edge of the lane and continues past, close to the ego's path. From the left side of the lane, a pedestrian wearing black pants and a gray shirt crosses to the right, moving through the lane ahead. Storefronts line both sides, and cones and displays sit at the curb without obstructing the lane.", "hazard_reasoning": "There is a pedestrian wearing black pants and a gray shirt on the left side of the lane, crossing to the right side. Because the pedestrian is moving directly into the vehicle's path, the driver should reduce speed to maintain safety."}
{"id": "train_06617", "split": "train", "clip_key": "2020-0131-103016_044151_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "044151"}, "frames": ["2020-0131-103016_044151_movie_t-3.jpg", "2020-0131-103016_044151_movie_t-2.jpg", "2020-0131-103016_044151_movie_t-1.jpg", "2020-0131-103016_044151_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a landscaped median and smooth pavement runs between high-rise buildings, and traffic is moderate with short queues building near a distant intersection. Ahead in the ego lane a line of vehicles slows, constraining the pace, and a gray truck within this queue decelerates because of congestion. A white minivan slightly left ahead continues straight at low speed as it follows the queue in the adjacent lane. In the far-right lanes, a small dark truck proceeds forward parallel to the ego without merging. On the opposite side of the median, oncoming traffic moves steadily.", "hazard_reasoning": "There is a gray truck slowing down in the ego lane because of traffic congestion ahead. The driver should slow down to maintain a safe distance and anticipate further deceleration due to congestion."}
{"id": "train_06618", "split": "train", "clip_key": "2020-0220-151845_002993_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "002993"}, "frames": ["2020-0220-151845_002993_movie_t-3.jpg", "2020-0220-151845_002993_movie_t-2.jpg", "2020-0220-151845_002993_movie_t-1.jpg", "2020-0220-151845_002993_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with two same-direction lanes, no median, and smooth pavement shows moderate traffic moving toward an intersection. A green city bus is directly ahead in the left lane, slowing in front of the ego car in the ego lane to service a stop, which constrains our speed. To the right, a black taxi in the adjacent lane advances past the bus and continues straight without entering our path. Farther ahead, several cars in the right lane roll slowly toward the junction, setting the pace. On the left sidewalk, pedestrians wait near the curb by the bus stop and crosswalk and may enter the roadway.", "hazard_reasoning": "There is a green bus slowing in front of the ego car in the ego lane. The bus's deceleration ahead requires you to slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_06619", "split": "train", "clip_key": "2020-0203-114632_092599_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "092599"}, "frames": ["2020-0203-114632_092599_movie_t-3.jpg", "2020-0203-114632_092599_movie_t-2.jpg", "2020-0203-114632_092599_movie_t-1.jpg", "2020-0203-114632_092599_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated roadway, with two lanes in the ego direction, smooth dry pavement, and a guardrail separating the right sidewalk; traffic is light and moving steadily. A white van ahead in the ego lane pulls away from the camera, driving off as the road in front of it stays clear. A smaller white car farther ahead in the adjacent left lane continues straight at a similar pace without influencing the ego vehicle.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06620", "split": "train", "clip_key": "2020-0129-105040_057471_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "057471"}, "frames": ["2020-0129-105040_057471_movie_t-3.jpg", "2020-0129-105040_057471_movie_t-2.jpg", "2020-0129-105040_057471_movie_t-1.jpg", "2020-0129-105040_057471_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban residential street with two-way traffic and no median curves gently right; the pavement is sound with red-painted shoulders and overall traffic is light. On the left near the camera, a pedestrian wearing brown pants, white shoes, and a backpack walks away along the shoulder, keeping to the edge of the ego lane. Farther ahead on the left, another pedestrian also walks away on the shoulder and remains outside the travel lane. On the right ahead, a white mini truck stands at the curb in the oncoming lane, reducing the usable width but leaving space to pass. A roadside convex mirror on a pole is visible at the bend.", "hazard_reasoning": "A female pedestrian, wearing brown pants, white shoes, and carrying a backpack, is walking on the left side of the road, away from the ego car. The driver should manoeuvre carefully around the pedestrian to avoid a potential collision in the blind spot."}
{"id": "train_06621", "split": "train", "clip_key": "titan_clip_621_000084_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_621_000084_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_621_000084_movie_t-3_augB1.jpg", "titan_clip_621_000084_movie_t-2_augB1.jpg", "titan_clip_621_000084_movie_t-1_augB1.jpg", "titan_clip_621_000084_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian ahead", "environment_perception": "An urban commercial street with a single narrow lane is bounded by railings and a zebra crossing in the foreground. The pavement looks sound and motor traffic is light with no vehicles ahead. A pedestrian wearing a beige shirt and beige pants is in the middle of the lane ahead walking toward the ego vehicle, directly occupying its path and constraining progress. Another pedestrian near the left rail ahead moves toward the lane edge and could enter the path. A person on the right sidewalk walks parallel to the road and remains clear of the lane. Bicycles are parked along the left behind a fence, and no other hazards are visible.", "hazard_reasoning": "There is a pedestrian wearing a beige shirt and beige pants, and walking towards the ego car, in the middle of the road. The pedestrian is entering the roadway ahead and may cross the vehicle's path, requiring the driver to yield to avoid a collision."}
{"id": "train_06622", "split": "train", "clip_key": "titan_clip_122_000174_movie", "source": {"subset": "titan", "scenario": "clip_122", "frame": "000174"}, "frames": ["titan_clip_122_000174_movie_t-3.jpg", "titan_clip_122_000174_movie_t-2.jpg", "titan_clip_122_000174_movie_t-1.jpg", "titan_clip_122_000174_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian.", "environment_perception": "A narrow two-way urban street lined with midrise shops has no median or centerline, and the asphalt looks smooth; vehicle traffic is light while pedestrian activity is dense. A white microvan ahead in the ego lane rolls slowly near the center, setting the pace, and no oncoming vehicles are close. A pedestrian wearing a brown shirt steps from the right sidewalk and crosses mid-block toward the left in the middle of the road, entering the path ahead. Several other pedestrians walk along the right sidewalk close to the curb, with one pausing near the edge and possibly entering the lane. Scaffolding and cones on the left occupy the sidewalk but do not narrow the carriageway.", "hazard_reasoning": "There is a pedestrian wearing a brown shirt, crossing the street in the middle of the road, from the right side to the left side. The pedestrian is crossing mid-block, so the driver must yield to avoid a collision."}
{"id": "train_06623", "split": "train", "clip_key": "2020-0207-101955_012610_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "012610"}, "frames": ["2020-0207-101955_012610_movie_t-3.jpg", "2020-0207-101955_012610_movie_t-2.jpg", "2020-0207-101955_012610_movie_t-1.jpg", "2020-0207-101955_012610_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane in each direction runs between mid-rise buildings, separated by double center lines; the pavement looks smooth and traffic is moderate and moving. A green box truck ahead in the ego lane slows, bunching with vehicles farther ahead and effectively setting the ego vehicle's pace. A white microvan and a dark van are stopped along the left curb ahead, remaining stationary and narrowing lateral space next to the ego lane. An oncoming white van approaches in its right-side lane on the far side of the center lines, continuing steadily past with no immediate conflict.", "hazard_reasoning": "There is a green truck slowing in the ego lane because of traffic congestion ahead on the road. The green truck is decelerating due to congestion ahead, so the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_06624", "split": "train", "clip_key": "titan_clip_1149_000432_movie", "source": {"subset": "titan", "scenario": "clip_1149", "frame": "000432"}, "frames": ["titan_clip_1149_000432_movie_t-3.jpg", "titan_clip_1149_000432_movie_t-2.jpg", "titan_clip_1149_000432_movie_t-1.jpg", "titan_clip_1149_000432_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on left side.", "environment_perception": "A narrow urban residential two-way road without a centerline runs between close buildings, the pavement smooth and clean, and traffic is very light. No oncoming or same-direction vehicles appear, while a couple of cars sit parked in driveways on the right. On the left side ahead, a pedestrian wearing a white shirt walks toward the ego vehicle along the edge line and may step into the ego lane as the space narrows. A yellow roadside warning sign on the left highlights pedestrian activity.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the left side of the road, towards the ego car. The pedestrian could step into the lane unexpectedly, so the driver should be aware and prepared to adjust speed or direction."}
{"id": "train_06625", "split": "train", "clip_key": "2020-0217-110854_002615_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-110854_002615_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-110854_002615_movie_t-3_augB1.jpg", "2020-0217-110854_002615_movie_t-2_augB1.jpg", "2020-0217-110854_002615_movie_t-1_augB1.jpg", "2020-0217-110854_002615_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban commercial street with a single narrow lane in the ego's direction has wet pavement and heavy stop-and-go traffic. A red delivery scooter directly ahead in the ego lane slows because congestion builds ahead, keeping the ego vehicle's pace low. Just beyond it, a white sedan slightly to the right creeps forward in the same direction and constrains the available gap. Farther ahead, a garbage truck sits almost stationary in the lane, forming the head of the queue. An overhead pedestrian crossing sign is visible. On the left, a silver van stands with its sliding door open, narrowing the roadway beside the queue.", "hazard_reasoning": "There is a red scooter slowing down in the ego lane because of the traffic congestion ahead on the road. The driver should stop to avoid a collision with the slowing scooter due to the congested traffic ahead."}
{"id": "train_06626", "split": "train", "clip_key": "2020-0218-103119_048247_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "048247"}, "frames": ["2020-0218-103119_048247_movie_t-3.jpg", "2020-0218-103119_048247_movie_t-2.jpg", "2020-0218-103119_048247_movie_t-1.jpg", "2020-0218-103119_048247_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multi-lane road approaches a signalized intersection with no median, dry pavement, and heavy, stop-and-go flow. Vehicles queue tightly in several same-direction lanes. A gray box truck directly ahead in the ego lane slows and comes to a near stop because of traffic congestion ahead, controlling the ego car's speed. To the right, a light-green minivan in the adjacent lane creeps forward toward the intersection, keeping pace alongside the ego car and limiting space to merge. To the left, a red car in the neighboring lane inches ahead beside the truck, also advancing with the queue. The overhead traffic signal ahead shows red.", "hazard_reasoning": "There is a gray truck slowing in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adjust speed to current traffic conditions."}
{"id": "train_06627", "split": "train", "clip_key": "2020-0127-132751_084307_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "084307"}, "frames": ["2020-0127-132751_084307_movie_t-3.jpg", "2020-0127-132751_084307_movie_t-2.jpg", "2020-0127-132751_084307_movie_t-1.jpg", "2020-0127-132751_084307_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban two-way road with two lanes in the ego's direction and no physical median; the pavement is in good condition and a blue painted bicycle lane runs along the left curb. Traffic in the ego direction is heavy and largely stationary. A green tarp-covered truck sits directly ahead in the ego lane, stopped because congestion ahead blocks progress and it holds the ego vehicle. To the right, a white station wagon in the adjacent lane is also stopped in the queue, pacing the truck and limiting any lane change gain. Farther ahead in the right lane, a dark minivan waits among other cars, showing the jam extends forward.", "hazard_reasoning": "There is a green truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop promptly to avoid a rear-end collision with the stationary truck."}
{"id": "train_06628", "split": "train", "clip_key": "titan_clip_454_000288_movie", "source": {"subset": "titan", "scenario": "clip_454", "frame": "000288"}, "frames": ["titan_clip_454_000288_movie_t-3.jpg", "titan_clip_454_000288_movie_t-2.jpg", "titan_clip_454_000288_movie_t-1.jpg", "titan_clip_454_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban two-way road without a marked centerline runs between a stone wall on the left and a building with a guardrail on the right; the dry pavement looks slightly worn and traffic is light with no evident oncoming flow. Far ahead on the left edge, a dark van and a white car are stopped near the curb, narrowing the usable lane and constraining the ego-vehicle's path. On the right side beyond the guardrail, a man in a white shirt walks away from the camera rather than exiting a car, staying outside the travel lane. A red no-parking sign is posted on a left-side pole, and orange cones line both shoulders.", "hazard_reasoning": "There is a man wearing a white shirt and exiting from a car, on the left side of the road. The pedestrian is stepping into the roadway and could suddenly move into the vehicle's path, so the driver should carefully manoeuvre around him to avoid collision."}
{"id": "train_06629", "split": "train", "clip_key": "2020-0227-104226_100339_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "100339"}, "frames": ["2020-0227-104226_100339_movie_t-3.jpg", "2020-0227-104226_100339_movie_t-2.jpg", "2020-0227-104226_100339_movie_t-1.jpg", "2020-0227-104226_100339_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three same-direction lanes shows smooth pavement and moderate, steady traffic. Ahead in the ego lane, a white box truck drives away from the ego car, continuing straight and effectively setting the pace. In the adjacent right lane, a small white van runs slightly ahead at a similar speed without signaling or drifting toward the ego lane. Farther right, a red sedan proceeds in the rightmost lane and gradually pulls ahead. A pedestrian overpass spans the roadway on the right, and marked crosswalks are visible; no unusual signage or hazards stand out.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. It may brake or slow down suddenly, so the driver should follow the vehicle ahead at a safe distance."}
{"id": "train_06630", "split": "train", "clip_key": "titan_clip_542_000594_movie", "source": {"subset": "titan", "scenario": "clip_542", "frame": "000594"}, "frames": ["titan_clip_542_000594_movie_t-3.jpg", "titan_clip_542_000594_movie_t-2.jpg", "titan_clip_542_000594_movie_t-1.jpg", "titan_clip_542_000594_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around parked van", "environment_perception": "A narrow urban two-way street runs between mid-rise buildings with smooth pavement and no median, and traffic is light. A white van is parked on the left with its rear hatch open as it is being loaded, slightly intruding into the lane and narrowing the passage. A worker stands at the back of the van handling items beside a blue handcart near the curb, positioned close to the ego path. Farther ahead on the right, a pedestrian walks away along the curbside and remains outside the lane. Construction scaffolding lines the left frontage, but no salient signals or posted limits are visible.", "hazard_reasoning": "There is a white van parked on the left side of the road, because it is being loaded. The driver should manoeuvre carefully around the parked van to avoid collision with the loading activity."}
{"id": "train_06631", "split": "train", "clip_key": "titan_clip_725_000156_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_725_000156_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_725_000156_movie_t-3_augB1.jpg", "titan_clip_725_000156_movie_t-2_augB1.jpg", "titan_clip_725_000156_movie_t-1_augB1.jpg", "titan_clip_725_000156_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban residential street with a single narrow lane and no median stretches ahead; the pavement is smooth and traffic is light as the car approaches a small intersection between mid-rise buildings. A pedestrian in a blue shirt and beige shorts is centered ahead, walking away in the middle of the road along the ego path, which may constrain the vehicle's speed. A white van is parked on the left at a recessed entrance, remaining stationary and outside the travel lane. Road markings show a forward arrow and a stop instruction near the upcoming intersection, with no traffic signal visible.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and beige shorts, walking in the middle of the road, away from the ego car. The driver must manoeuvre carefully to maintain a safe distance from the pedestrian walking in the road."}
{"id": "train_06632", "split": "train", "clip_key": "2020-0210-101957_008886_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "008886"}, "frames": ["2020-0210-101957_008886_movie_t-3.jpg", "2020-0210-101957_008886_movie_t-2.jpg", "2020-0210-101957_008886_movie_t-1.jpg", "2020-0210-101957_008886_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with one lane in each direction rises gently between buildings; the pavement looks smooth and traffic is light. A green sedan ahead in the ego lane slows because a white bus farther ahead in the same direction is decelerating, constraining the pace. The oncoming lane remains mostly empty with no vehicles close to the ego path. A few pedestrians are on the right-hand sidewalk near storefronts but they stay clear of the street. An overhead signal structure is visible above the road, with no clearly lit aspect, and no other notable controls or hazards appear.", "hazard_reasoning": "There is a green sedan slowing in the ego lane because of the bus slowing ahead on the road. The bus's slowdown can force the following vehicles to reduce speed abruptly, so you should slow down to maintain a safe gap."}
{"id": "train_06633", "split": "train", "clip_key": "titan_clip_1030_000180_movie", "source": {"subset": "titan", "scenario": "clip_1030", "frame": "000180"}, "frames": ["titan_clip_1030_000180_movie_t-3.jpg", "titan_clip_1030_000180_movie_t-2.jpg", "titan_clip_1030_000180_movie_t-1.jpg", "titan_clip_1030_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with a single shared lane and interlocking-brick pavement runs between storefronts and bollards, with light, slow-moving traffic. A pedestrian wearing a striped shirt and black pants walks along the right side ahead, angling toward the travel lane but away from the ego car, and may enter the ego lane. Two more pedestrians farther ahead near the center walk away in the lane, occupying the path and limiting room to pass. A small delivery truck is stopped on the right with its rear open, protruding into the lane and creating a pinch point.", "hazard_reasoning": "A pedestrian, wearing a striped shirt and black pants, is walking on the right side of the road towards the ego lane but away from the ego car. The driver should slow down because the pedestrian is encroaching into the driving lane, increasing the risk of a collision."}
{"id": "train_06634", "split": "train", "clip_key": "titan_clip_1354_000468_movie", "source": {"subset": "titan", "scenario": "clip_1354", "frame": "000468"}, "frames": ["titan_clip_1354_000468_movie_t-3.jpg", "titan_clip_1354_000468_movie_t-2.jpg", "titan_clip_1354_000468_movie_t-1.jpg", "titan_clip_1354_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban residential street forms a two-way road without a center divider, the pavement looks smooth, and traffic is light as the ego vehicle proceeds in the left lane. On the left edge near the camera, a pedestrian wearing a backpack walks a bicycle away from the ego car along the shoulder, close to the ego lane and reducing available clearance. Far ahead in the same direction, a small car continues along the road. Parked vehicles occupy right-side driveways, including a black van near the curb, and remain stationary. A yellow 20 marking on the pavement indicates the local speed limit.", "hazard_reasoning": "A pedestrian is wearing a backpack and walking with a bicycle along the left side of the road, away from the ego car. The pedestrian may step or swerve into the lane unexpectedly, so you should slow down to maintain safety."}
{"id": "train_06635", "split": "train", "clip_key": "2020-0214-102601_057235_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "057235"}, "frames": ["2020-0214-102601_057235_movie_t-3.jpg", "2020-0214-102601_057235_movie_t-2.jpg", "2020-0214-102601_057235_movie_t-1.jpg", "2020-0214-102601_057235_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs beneath elevated expressways, with smooth red-painted pavement and a concrete island on the right; traffic is moderate and momentarily queued at an intersection. A blue car directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the adjacent left lane a white hatchback slightly ahead waits as well, constraining that lane's flow. A gray sedan on the far left eases forward to line up next to the ego car, remaining parallel. The overhead signal faces the approach and displays red.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid a collision as the vehicle ahead is stationary at the red signal."}
{"id": "train_06636", "split": "train", "clip_key": "2020-0210-101957_014872_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_014872_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_014872_movie_t-3_augB1.jpg", "2020-0210-101957_014872_movie_t-2_augB1.jpg", "2020-0210-101957_014872_movie_t-1_augB1.jpg", "2020-0210-101957_014872_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of motorcycle ahead", "environment_perception": "An urban multi-lane boulevard with a landscaped median and smooth pavement approaches a signalized intersection, and traffic is light to moderate moving steadily. A black motorcycle travels ahead of the ego car in the right lane, continuing straight through the junction and gradually pulling away, matching the note about a black motorcycle in front. A small white flatbed truck is farther ahead slightly left of the ego, proceeding straight toward the intersection and pacing vehicles in its lane. Several cars on the opposite carriageway beyond the median move the other way without interacting with the ego path. Overhead traffic lights span the crosswalk at the junction, with broad zebra markings visible, and no pedestrians or hazards appear.", "hazard_reasoning": "There is a black motorcycle driving in the right lane in front of the ego car. The motorcycle may change speed or direction unpredictably, so the driver should be aware and maintain a safe following distance."}
{"id": "train_06637", "split": "train", "clip_key": "2020-0203-154554_009773_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "009773"}, "frames": ["2020-0203-154554_009773_movie_t-3.jpg", "2020-0203-154554_009773_movie_t-2.jpg", "2020-0203-154554_009773_movie_t-1.jpg", "2020-0203-154554_009773_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of white van merging", "environment_perception": "An urban multilane intersection with smooth pavement lies ahead, with separate through and right-turn lanes and a small curb island on the right; traffic is moderate as vehicles filter through. A white van cuts in from the right side of the intersection and moves toward the ego car, heading into the ego lane. Far ahead in the same direction, several trucks and vans proceed through the junction at low speed and keep the approach steady. On the right sidewalk near the corner, a group of pedestrians waits at the curb and remains stationary. Oncoming traffic beyond the intersection travels in its lanes without impeding the approach.", "hazard_reasoning": "There is a white van cutting in on the right side of the intersection and moving towards the ego car. This cutting-in maneuver could require sudden evasive action if not monitored and warned in advance."}
{"id": "train_06638", "split": "train", "clip_key": "2020-0225-145150_025484_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "025484"}, "frames": ["2020-0225-145150_025484_movie_t-3.jpg", "2020-0225-145150_025484_movie_t-2.jpg", "2020-0225-145150_025484_movie_t-1.jpg", "2020-0225-145150_025484_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial with smooth pavement passes mid-rise buildings, with a fenced median on the right separating oncoming traffic, and traffic is light to moderate as the scene approaches an intersection. A blue truck directly ahead in the ego lane slows because of flashing pedestrian crossing lights at the intersection, and it controls the ego car's pace. In the adjacent left lane, a white car draws slightly ahead while continuing straight in the same direction. Overhead signals and pedestrian crossing beacons are visible at the junction, and no hazards or unusual obstacles appear.", "hazard_reasoning": "There is a blue truck slowing in front of the ego-car, in the ego lane, because of the flashing pedestrian crossing lights ahead at the intersection. The ego-vehicle should follow the slowing truck to maintain a safe distance and be prepared for potential pedestrians crossing the road."}
{"id": "train_06639", "split": "train", "clip_key": "titan_clip_536_000186_movie", "source": {"subset": "titan", "scenario": "clip_536", "frame": "000186"}, "frames": ["titan_clip_536_000186_movie_t-3.jpg", "titan_clip_536_000186_movie_t-2.jpg", "titan_clip_536_000186_movie_t-1.jpg", "titan_clip_536_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrians", "environment_perception": "A narrow urban side street runs between close buildings with no lane markings or median, the asphalt looks clean and dry, and traffic is very light throughout. Far ahead in the same direction, a cyclist moves away near the center-right of the lane, potentially setting the pace for the ego vehicle. On the right edge, a pedestrian wearing off-white pants walks away from the ego car along the curb as the road ahead is clear, remaining outside the main path. No notable traffic signals or signs are visible, and the lane itself is free of parked vehicles or obstacles.", "hazard_reasoning": "There are pedestrians wearing off-white pants walking away from the ego car, because the road ahead is clear, on the right side of the road. They may change direction and enter the lane, so the driver should manoeuvre carefully around them."}
{"id": "train_06640", "split": "train", "clip_key": "titan_clip_1375_000246_movie", "source": {"subset": "titan", "scenario": "clip_1375", "frame": "000246"}, "frames": ["titan_clip_1375_000246_movie_t-3.jpg", "titan_clip_1375_000246_movie_t-2.jpg", "titan_clip_1375_000246_movie_t-1.jpg", "titan_clip_1375_000246_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking on roadway", "environment_perception": "A narrow urban commercial street with a single undivided lane and smooth pavement shows very light vehicular traffic as the ego car proceeds slowly; no oncoming vehicles are visible. On the right edge ahead, a woman in a black shirt and skirt carrying a handbag walks away from the ego vehicle along the roadway because there is no sidewalk, and her presence constrains the ego car's pace. Farther ahead near the middle of the street, several pedestrians cross from left to right, potentially occupying the ego path. Along both curbs, small groups linger by storefronts and steps, occasionally edging toward the lane and narrowing the available space.", "hazard_reasoning": "There is a pedestrian, wearing a black shirt and black skirt, walking away from the ego car on the right side of the road, in front of the ego car, because there is no sidewalk. The pedestrian is occupying the travel lane and may move unpredictably, so the driver should remain alert and slow down to avoid a collision."}
{"id": "train_06641", "split": "train", "clip_key": "2020-0226-140503_077700_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "077700"}, "frames": ["2020-0226-140503_077700_movie_t-3.jpg", "2020-0226-140503_077700_movie_t-2.jpg", "2020-0226-140503_077700_movie_t-1.jpg", "2020-0226-140503_077700_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane elevated road carries same-direction traffic across a bridge with metal railings and smooth, slightly dark pavement; flow is moderate to heavy with a short queue forming ahead. A white car directly ahead in the ego lane slows as the pack compresses, consistent with congestion in front and constraining the ego vehicle's pace. To the right, a black van runs alongside in its lane at a slightly higher speed and does not drift toward the ego lane. In the left lane ahead, a white minivan keeps its lane and speed, pacing the flow. Farther ahead several vehicles show brake lights as the line approaches an overpass.", "hazard_reasoning": "There is a white sedan slowing down in the front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to adapt to the reduced speed of the vehicle ahead and maintain a safe following distance."}
{"id": "train_06642", "split": "train", "clip_key": "titan_clip_728_000162_movie", "source": {"subset": "titan", "scenario": "clip_728", "frame": "000162"}, "frames": ["titan_clip_728_000162_movie_t-3.jpg", "titan_clip_728_000162_movie_t-2.jpg", "titan_clip_728_000162_movie_t-1.jpg", "titan_clip_728_000162_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban side street with a single narrow lane runs straight between a fenced green strip on the left and building fronts with a storefront on the right; there is no median, the pavement appears smooth, and traffic is light with no moving vehicles visible. The ego-vehicle proceeds in its lane with clear space ahead and no oncoming traffic apparent. No pedestrians or cyclists enter the roadway, and no parked vehicles encroach on the lane. No salient traffic signals or speed signs are visible. Guardrails and close building edges create tight clearances but no immediate obstacles.", "hazard_reasoning": "No hazards are present, so the driver can continue driving normally without any immediate actions."}
{"id": "train_06643", "split": "train", "clip_key": "2020-0127-132751_069150_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "069150"}, "frames": ["2020-0127-132751_069150_movie_t-3.jpg", "2020-0127-132751_069150_movie_t-2.jpg", "2020-0127-132751_069150_movie_t-1.jpg", "2020-0127-132751_069150_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided roadway with smooth pavement curves gently right, with a guardrail median on the right and apartments and shops along both sides; traffic is light. A white van ahead in the ego lane continues at a steady pace because the road ahead is clear, guiding the ego vehicle's speed. Far ahead in the same direction a few cars move away without affecting the ego path. Beyond the median, sparse oncoming traffic proceeds in the opposite carriageway. A car dealership on the left holds rows of parked vehicles set back from the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06644", "split": "train", "clip_key": "titan_clip_422_000186_movie", "source": {"subset": "titan", "scenario": "clip_422", "frame": "000186"}, "frames": ["titan_clip_422_000186_movie_t-3.jpg", "titan_clip_422_000186_movie_t-2.jpg", "titan_clip_422_000186_movie_t-1.jpg", "titan_clip_422_000186_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of the cone ahead", "environment_perception": "A narrow urban two-way street with one left-hand lane per direction runs between mid-rise buildings; the pavement is smooth, and the ego lane is pinched by a coned-off work zone with parked utility trucks, so traffic is light and slow near the site. A white car ahead in the ego lane proceeds cautiously through the narrowed section, setting the ego vehicle's pace. On the near left, a construction worker stands by red traffic cones and signals vehicles around the obstruction, the cones indicating ongoing road work. On the right sidewalk, a pedestrian walks away from the camera and remains clear of the roadway.", "hazard_reasoning": "There is a red traffic cone on the left side of the road, indicating construction work. The cone marks a work zone and may require the driver to adjust speed or lane position to avoid potential obstructions."}
{"id": "train_06645", "split": "train", "clip_key": "titan_clip_421_000450_movie", "source": {"subset": "titan", "scenario": "clip_421", "frame": "000450"}, "frames": ["titan_clip_421_000450_movie_t-3.jpg", "titan_clip_421_000450_movie_t-2.jpg", "titan_clip_421_000450_movie_t-1.jpg", "titan_clip_421_000450_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the van carefully", "environment_perception": "An urban side street with a single unmarked two-way carriageway is shown, bordered by buildings and vending machines; the asphalt is mostly smooth with a few patches and manholes, and traffic is light. Ahead on the left, a pedestrian walks away along the roadway edge near the curb, close to the ego path and narrowing clearance. On the right, a white van is parked with its rear open as it is being unloaded, protruding slightly into the lane and further constricting space. Farther ahead in the same direction, a small delivery truck moves slowly along the lane, effectively setting the pace.", "hazard_reasoning": "There is a white van parked on the right side of the road, because it is being unloaded. The parked van narrows your lane and may force you to swerve or encounter unloading activity, so you should manoeuvre carefully around it."}
{"id": "train_06646", "split": "train", "clip_key": "2020-0127-132751_099819_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "099819"}, "frames": ["2020-0127-132751_099819_movie_t-3.jpg", "2020-0127-132751_099819_movie_t-2.jpg", "2020-0127-132751_099819_movie_t-1.jpg", "2020-0127-132751_099819_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A suburban two-lane undivided road with a solid yellow centerline and smooth pavement carries light traffic that bunches at a signalized junction ahead. A silver van directly ahead in the ego lane remains stopped for the red traffic light, holding the ego car at a standstill. At a left-side side street, a yellow hatchback waits at the mouth of the junction, poised to merge into the main road once traffic moves, and may enter ahead of the ego vehicle. Two pedestrians walk along the right sidewalk beside a red-brick wall, while another person stands near the left curb by the side street, none stepping into the roadway. The oncoming lane to the right stays clear.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because of red traffic light. The driver should stop to avoid colliding with the stationary van at the signal."}
{"id": "train_06647", "split": "train", "clip_key": "titan_clip_1172_000420_movie", "source": {"subset": "titan", "scenario": "clip_1172", "frame": "000420"}, "frames": ["titan_clip_1172_000420_movie_t-3.jpg", "titan_clip_1172_000420_movie_t-2.jpg", "titan_clip_1172_000420_movie_t-1.jpg", "titan_clip_1172_000420_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrians.", "environment_perception": "An urban commercial street with brick paving forms a narrow single lane without a median, lined by shops and bollards, and traffic is light with slow progress. Two pedestrians ahead on the left, one in a blue T-shirt and one in black, walk away from the ego vehicle along the left side because of the parked truck, occupying part of the travel path and constraining the pace. A flatbed truck stands parked along the left edge partly in the lane, narrowing clearance and causing people to detour around it. Farther ahead, several more pedestrians near storefronts walk along the roadway and may drift toward the lane. A blue cone and a small dolly sit by the left curb.", "hazard_reasoning": "There are two pedestrians wearing blue and black t-shirts and black pants, and walking away from the ego car on the left side of the road because of the parked vehicle. The parked truck obstructs their view and may force them into the lane unexpectedly, so the driver should manoeuvre carefully around them."}
{"id": "train_06648", "split": "train", "clip_key": "titan_clip_705_000564_movie", "source": {"subset": "titan", "scenario": "clip_705", "frame": "000564"}, "frames": ["titan_clip_705_000564_movie_t-3.jpg", "titan_clip_705_000564_movie_t-2.jpg", "titan_clip_705_000564_movie_t-1.jpg", "titan_clip_705_000564_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian ahead", "environment_perception": "A narrow urban back street with a single lane and no median runs between tall buildings; the asphalt appears smooth and traffic is very light. A pedestrian on the left edge walks toward the ego vehicle carrying a black bag, close to the lane and potentially entering its path. A green truck stands on the left foreground, partly jutting into the lane and limiting the available width as the car approaches. On the right, shopfront fixtures and a freestanding sign encroach slightly onto the roadway, and several bicycles are parked farther ahead along the curb.", "hazard_reasoning": "There is a pedestrian wearing a blue shirts and black pants, carrying a black bag, and walking towards the ego car, on the left side of the road. Because the pedestrian is approaching the vehicle without a crosswalk and may step onto the road, the driver should anticipate and be cautious of the pedestrian ahead."}
{"id": "train_06649", "split": "train", "clip_key": "2020-0214-102601_033459_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "033459"}, "frames": ["2020-0214-102601_033459_movie_t-3.jpg", "2020-0214-102601_033459_movie_t-2.jpg", "2020-0214-102601_033459_movie_t-1.jpg", "2020-0214-102601_033459_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated roadway, with three same-direction lanes on clean asphalt; traffic is heavy and mostly stopped in queues. Directly ahead, a white sedan in the ego lane is stopped for a red traffic signal and sets the pace. In the left lane, a silver van slightly ahead inches forward with its line, occupying the adjacent space and blocking an easy merge. To the right, a white hatchback draws level and creeps along, likewise limiting lateral movement. Farther ahead, mixed vans, trucks, and a bus pack the lanes near the junction.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, because of a red traffic light. The driver must stop to avoid colliding with the halted vehicle ahead which is obeying the red signal."}
{"id": "train_06650", "split": "train", "clip_key": "titan_clip_150_000312_movie", "source": {"subset": "titan", "scenario": "clip_150", "frame": "000312"}, "frames": ["titan_clip_150_000312_movie_t-3.jpg", "titan_clip_150_000312_movie_t-2.jpg", "titan_clip_150_000312_movie_t-1.jpg", "titan_clip_150_000312_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian taking pictures", "environment_perception": "An urban intersection on a two-way street with one lane each direction, no median, and smooth asphalt is shown, with light traffic. Ahead at the near crosswalk, two pedestrians walk left to right across the ego path, holding the vehicle at the line. On the left corner of the intersection, a pedestrian in a white shirt and black pants stands by the curb with a phone raised toward the sky, taking a picture while remaining off the roadway. Far ahead in the same direction, a black van continues along the left lane, moving away and not constraining the approach. A building on the right is wrapped for construction behind sidewalk barriers.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, standing on the left side of the intersection, and pointing their phone upward, because they are taking a picture. Because the pedestrian is distracted by their phone, they may step into the roadway unexpectedly, requiring the driver to be alert."}
{"id": "train_06651", "split": "train", "clip_key": "2020-0227-104226_054959_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054959"}, "frames": ["2020-0227-104226_054959_movie_t-3.jpg", "2020-0227-104226_054959_movie_t-2.jpg", "2020-0227-104226_054959_movie_t-1.jpg", "2020-0227-104226_054959_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming white SUV", "environment_perception": "An urban two-way road with one lane in each direction and a solid yellow centerline approaches a zebra-crossing intersection on smooth pavement, with moderate traffic. A gray van directly ahead in the ego lane slows and stops at the crosswalk, constraining the ego vehicle's pace. On the right side of the intersection, a white SUV drives toward the ego vehicle in the oncoming lane and approaches the crossing. A silver car sits at the right curb of the oncoming side and remains stationary. Two pedestrians wait on the right sidewalk at the crosswalk edge, relevant as they may enter. A green pedestrian signal is lit.", "hazard_reasoning": "There is a white SUV on the right side of the intersection, driving towards the ego car. The SUV may enter the ego-vehicle's path, so you should yield to avoid a collision."}
{"id": "train_06652", "split": "train", "clip_key": "titan_clip_658_000228_movie", "source": {"subset": "titan", "scenario": "clip_658", "frame": "000228"}, "frames": ["titan_clip_658_000228_movie_t-3.jpg", "titan_clip_658_000228_movie_t-2.jpg", "titan_clip_658_000228_movie_t-1.jpg", "titan_clip_658_000228_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way road without a marked centerline runs between buildings and trees; the asphalt looks smooth and traffic is light, with parked vehicles creating a brief pinch point. Two pedestrians wearing shorts walk away from the camera in the middle of the road ahead, moving along the ego path and potentially constraining its pace. A white work van is stopped at the left curb just ahead with its rear protruding into the lane, narrowing the passage. On the right, a silver minivan stands at the curb facing the camera and slightly encroaches into the roadway, shaping a tight gap between it and the left van. Cones and red-white guard rails line the edges.", "hazard_reasoning": "There are two pedestrians wearing shorts, walking in the middle of the road, away from the ego car. These pedestrians pose a risk of entering the vehicle's path, so the driver should slow down to ensure safety."}
{"id": "train_06653", "split": "train", "clip_key": "2020-0210-155354_004611_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "004611"}, "frames": ["2020-0210-155354_004611_movie_t-3.jpg", "2020-0210-155354_004611_movie_t-2.jpg", "2020-0210-155354_004611_movie_t-1.jpg", "2020-0210-155354_004611_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each way approaches a railway underpass; the pavement looks smooth and traffic is heavy and slow. A traffic signal ahead under the bridge shows red. A white sedan ahead in the ego lane is stopped because congestion blocks the way, holding the ego car. On the oncoming side, a person pushing a green handcart moves slowly toward the camera along the curb, remaining in their lane. Pedestrians stand along both sidewalks, some near the left curb but not entering the roadway. A black van is parked at the left edge with orange cones beside it, narrowing the ego lane.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the halted vehicle."}
{"id": "train_06654", "split": "train", "clip_key": "2020-0205-152530_000417_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "000417"}, "frames": ["2020-0205-152530_000417_movie_t-3.jpg", "2020-0205-152530_000417_movie_t-2.jpg", "2020-0205-152530_000417_movie_t-1.jpg", "2020-0205-152530_000417_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene is a narrow urban two-way street without a center line, bounded by sidewalks and utility poles; the asphalt is dry and smooth, traffic is light, and no oncoming vehicles are visible. A white box truck ahead in the ego lane slows while maneuvering around several parked vehicles, which constrains the ego vehicle's pace. A man on the left sidewalk walks away from the camera near the curb, remaining on the walkway and not affecting the lane. On the right, a person beside a bicycle stands at the curb near a shop, close to the lane edge but stationary. A red-and-blue no-parking sign on a pole to the left is visible, and the parked cars and work items near the storefronts locally narrow the carriageway.", "hazard_reasoning": "There is a white truck slowing in the ego lane, away from the ego car, because they are maneuvering around the parked vehicles. The driver should slow down to maintain a safe following distance and avoid collision as the truck reduces speed unexpectedly."}
{"id": "train_06655", "split": "train", "clip_key": "titan_clip_1139_000564_movie", "source": {"subset": "titan", "scenario": "clip_1139", "frame": "000564"}, "frames": ["titan_clip_1139_000564_movie_t-3.jpg", "titan_clip_1139_000564_movie_t-2.jpg", "titan_clip_1139_000564_movie_t-1.jpg", "titan_clip_1139_000564_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "A narrow urban two-way street with smooth pavement runs between low-rise shops and apartments, with metal railings on the right and no median; traffic is light with no moving vehicles ahead. Just ahead on the left, a white van is parked with its rear door open as it is being loaded, encroaching into the ego lane and narrowing the passage. At the van's rear, a person works with a small cart at the edge of the roadway, reducing the available width. Farther along on the right, a couple of pedestrians stand near storefronts on the sidewalk and remain clear of the road.", "hazard_reasoning": "There is a white van parked on the left side of the road, because it is being loaded. Its loading activity may encroach into the lane, requiring drivers to navigate around it to maintain safe clearance."}
{"id": "train_06656", "split": "train", "clip_key": "2020-0227-104226_016073_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "016073"}, "frames": ["2020-0227-104226_016073_movie_t-3.jpg", "2020-0227-104226_016073_movie_t-2.jpg", "2020-0227-104226_016073_movie_t-1.jpg", "2020-0227-104226_016073_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs under an elevated structure with a guarded right edge and smooth pavement; traffic is moderate and flows steadily. A white box truck ahead in the ego lane moves away and clears the intersection under a green signal, drawing the ego vehicle forward. A white minivan in the adjacent left lane travels slightly ahead at a similar pace, running parallel to the ego path. Additional cars continue in the far-left lane further ahead, and no obstacles or pedestrians are apparent near the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because of a green traffic light. You should follow the vehicle ahead to maintain a safe distance and be prepared for any changes at the signal."}
{"id": "train_06657", "split": "train", "clip_key": "titan_clip_558_000024_movie", "source": {"subset": "titan", "scenario": "clip_558", "frame": "000024"}, "frames": ["titan_clip_558_000024_movie_t-3.jpg", "titan_clip_558_000024_movie_t-2.jpg", "titan_clip_558_000024_movie_t-1.jpg", "titan_clip_558_000024_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street lined with shops has a single undivided lane with no sidewalks and smooth pavement, and traffic is light with no vehicles visible. On the right edge near the ego vehicle, a pedestrian with black hair, wearing a black shirt and carrying a black bag, walks along the roadway in the ego lane because there is no sidewalk, so they may encroach on the path. Farther ahead in the center of the lane, two pedestrians walk away from the camera and drift slightly left, likely constraining speed. Another person near the right storefront stays close to the curb without entering the lane. A 30 speed limit sign and a corner convex mirror are visible on the left. Bicycles are parked along the left curb, reducing clearance.", "hazard_reasoning": "There is a pedestrian with black hair, wearing a black shirt, and carrying a black bag, walking on the right side of the road in the ego-car lane, because there is no sidewalk. You should carefully manoeuvre around this pedestrian to maintain safety and avoid collision."}
{"id": "train_06658", "split": "train", "clip_key": "titan_clip_130_000498_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_130_000498_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_130_000498_movie_t-3_augB1.jpg", "titan_clip_130_000498_movie_t-2_augB1.jpg", "titan_clip_130_000498_movie_t-1_augB1.jpg", "titan_clip_130_000498_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street with a single vehicle lane and brick paving runs between tall buildings; there is no median and traffic is light, with the roadway locally narrowed by a parked box truck on the right. In the middle of the lane ahead, a pedestrian wearing white pants and a backpack walks toward the ego car to pass around the parked truck, moving directly along the vehicle's path. Slightly farther ahead, a person holding an umbrella walks away along the center of the lane, constraining the available pace. On the left, a man on the sidewalk heads toward the curb near a storefront and is close to the roadway, which could put him in the lane. The parked truck on the right occupies part of the lane and blocks sightlines to the adjacent sidewalk.", "hazard_reasoning": "There is a pedestrian wearing white pants and a backpack, walking in the middle of the road, toward the ego car, because he is walking around a parked truck. The driver should manoeuvre carefully to avoid a collision with this pedestrian who is emerging from behind the obstruction."}
{"id": "train_06659", "split": "train", "clip_key": "2020-0214-102601_026131_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "026131"}, "frames": ["2020-0214-102601_026131_movie_t-3.jpg", "2020-0214-102601_026131_movie_t-2.jpg", "2020-0214-102601_026131_movie_t-1.jpg", "2020-0214-102601_026131_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with stopped vehicle.", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between tall buildings; the pavement is clean and dry, and traffic is heavy in slow stop-and-go flow near an intersection. In the ego lane, a green sedan directly ahead is stopped because congestion builds in front, holding the ego vehicle. In the right adjacent lane, a large white coach bus creeps forward just ahead of the sedan, limiting the right-side view while keeping the same slow pace. Farther ahead in the central lanes, a white box truck remains stationary in the queue, contributing to the backup. Other cars fill neighboring lanes while pedestrians stay on the sidewalks.", "hazard_reasoning": "There is a green sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle ahead."}
{"id": "train_06660", "split": "train", "clip_key": "titan_clip_383_000246_movie", "source": {"subset": "titan", "scenario": "clip_383", "frame": "000246"}, "frames": ["titan_clip_383_000246_movie_t-3.jpg", "titan_clip_383_000246_movie_t-2.jpg", "titan_clip_383_000246_movie_t-1.jpg", "titan_clip_383_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shopping street with interlocking-brick pavement and no lane markings forms a narrow shared roadway; there is no divider and motor traffic is absent, so flow is light. The ego vehicle moves slowly through a small intersection between storefronts. Ahead in the center of the path, a pedestrian in a light shirt carrying a bag walks away along the roadway, directly occupying the ego lane and constraining pace. On the right side at the intersection, a pedestrian carrying a handbag walks toward the ego car and may edge into the roadway. To the left outside a drugstore, two pedestrians linger near the curb and shift slightly toward the street, potentially crossing. A corner convex mirror is visible, and shop displays and crates press into the roadway, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a grey shirt, black pants, and carrying a handbag, walking on the right side of an intersection, towards the ego car. The pedestrian is approaching the vehicle's path and may cross unpredictably, so the driver should manoeuvre carefully around them."}
{"id": "train_06661", "split": "train", "clip_key": "2020-0227-104226_048351_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-104226_048351_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-104226_048351_movie_t-3_augB1.jpg", "2020-0227-104226_048351_movie_t-2_augB1.jpg", "2020-0227-104226_048351_movie_t-1_augB1.jpg", "2020-0227-104226_048351_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane in each direction runs between sidewalks and guardrails, the pavement dry and smooth and traffic moving at a moderate pace. Ahead in the ego lane, a white covered truck slows near the junction because traffic is congested in the intersection, constraining the ego vehicle's speed. In the oncoming lane to the right, a blue medium truck approaches and continues past while staying in its lane. Large blue overhead direction signs mark the upcoming junction.", "hazard_reasoning": "There is a white truck slowing in the ego lane because of traffic congestion ahead in the intersection. The driver should slow down to maintain a safe distance and anticipate further deceleration in the congested intersection."}
{"id": "train_06662", "split": "train", "clip_key": "2020-0218-103119_024290_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "024290"}, "frames": ["2020-0218-103119_024290_movie_t-3.jpg", "2020-0218-103119_024290_movie_t-2.jpg", "2020-0218-103119_024290_movie_t-1.jpg", "2020-0218-103119_024290_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with smooth dry pavement shows light same-direction traffic, with flexible orange bollards forming a divider to a right-side lane and work barricades lining the left curb. A gray box truck is stopped directly ahead in the ego lane, blocking the path and determining the ego car's pace. Far ahead a few vehicles move away in the same direction beyond an intersection. A pedestrian walks along the left sidewalk, remaining clear of the carriageway. Prohibition signs on a left-side pole indicate local restrictions near the work area.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car. The stopped vehicle ahead blocks the lane and poses a collision risk, so you should stop in time."}
{"id": "train_06663", "split": "train", "clip_key": "2020-0228-150133_024124_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "024124"}, "frames": ["2020-0228-150133_024124_movie_t-3.jpg", "2020-0228-150133_024124_movie_t-2.jpg", "2020-0228-150133_024124_movie_t-1.jpg", "2020-0228-150133_024124_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian in crosswalk", "environment_perception": "An urban signalized intersection with a wide multi-lane roadway and zebra crossings lies ahead; the asphalt is smooth and overall traffic is light with vehicles mostly stationary near the junction. At the near crosswalk ahead, a pedestrian in black pants walks from right to left under a walk signal, crossing the ego lane. Another pedestrian slightly left of center proceeds leftward across the same crosswalk, continuing straight through the ego vehicle's path. On the far left edge, a third pedestrian starts to cross from left to right, entering the roadway near the ego lane. The pedestrian signals show walk, and a 20 sign is posted on a pole at the corner.", "hazard_reasoning": "There is a pedestrian at the crosswalk wearing black pants crossing the street to the left side because of walk sign on the traffic light. The driver must yield because the pedestrian has the right-of-way and proceeding could lead to a collision."}
{"id": "train_06664", "split": "train", "clip_key": "2020-0220-102630_040988_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "040988"}, "frames": ["2020-0220-102630_040988_movie_t-3.jpg", "2020-0220-102630_040988_movie_t-2.jpg", "2020-0220-102630_040988_movie_t-1.jpg", "2020-0220-102630_040988_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial curves right beneath elevated expressways, with several same-direction lanes, dashed markings, and a right-side guardrail; pavement is good and traffic is moderate, converging toward a rightward alignment. A white truck ahead in the ego lane slows due to congestion forming further ahead, setting the ego car's pace. A black sedan just left of the ego vehicle advances and begins edging right toward the ego lane, potentially merging in front. On the right, a small van proceeds in the adjacent lane at similar speed beside the truck, remaining a possible conflict at the lane split.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, because of traffic congestion ahead, in the ego lane. The driver should slow down to maintain a safe following distance and avoid a collision due to sudden deceleration."}
{"id": "train_06665", "split": "train", "clip_key": "2020-0203-114632_093593_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "093593"}, "frames": ["2020-0203-114632_093593_movie_t-3.jpg", "2020-0203-114632_093593_movie_t-2.jpg", "2020-0203-114632_093593_movie_t-1.jpg", "2020-0203-114632_093593_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane one-way road runs under an elevated structure on smooth pavement, with a curb median separating it from oncoming lanes to the left; traffic is slow with a short queue ahead. Directly ahead in the ego lane, a white van is stopped because of traffic congestion ahead, blocking the ego vehicle's path. Farther ahead in the same lane, a box truck waits in the queue, reinforcing the blockage. In the adjacent right lane, a dark sedan continues forward past the stopped vehicles. A blue Route 106 sign is visible on the left as columns of the elevated structure line the right shoulder.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of traffic congestion ahead. You should stop to avoid rear-ending the halted vehicle and adapt to the slowed traffic."}
{"id": "train_06666", "split": "train", "clip_key": "titan_clip_352_000264_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_352_000264_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_352_000264_movie_t-3_augB1.jpg", "titan_clip_352_000264_movie_t-2_augB1.jpg", "titan_clip_352_000264_movie_t-1_augB1.jpg", "titan_clip_352_000264_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of the cyclist crossing", "environment_perception": "A narrow urban two-way street with no centerline runs between apartments and shops, bordered by metal railings; the pavement is smooth and traffic is light. A cyclist wearing a blue shirt crosses ahead from the left curb to the right across the ego vehicle's path, temporarily blocking the way. Another cyclist stands with a bicycle at the right curb just beyond the crossing point, waiting near the edge and possibly entering the lane next. Farther ahead, a white van approaches in the oncoming lane, moving slowly toward the camera without interfering with the crossing. The roadside railings and posts constrain the usable roadway.", "hazard_reasoning": "There is a cyclist wearing a blue shirt, crossing the street, in front of the ego car, from the left side of the road to the right side. Because the cyclist is moving across the vehicle's path directly ahead, the driver should be aware to avoid a potential collision."}
{"id": "train_06667", "split": "train", "clip_key": "titan_clip_347_000258_movie", "source": {"subset": "titan", "scenario": "clip_347", "frame": "000258"}, "frames": ["titan_clip_347_000258_movie_t-3.jpg", "titan_clip_347_000258_movie_t-2.jpg", "titan_clip_347_000258_movie_t-1.jpg", "titan_clip_347_000258_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian ahead", "environment_perception": "An urban commercial alley with a single narrow shared lane and block-paved surface has no median or centerline, and traffic is light. The vehicle moves slowly along the middle. On the left edge near the vehicle, a pedestrian wearing a black shirt and beige pants walks toward it along the curb, close to the lane. Ahead in the lane, another pedestrian walks away near the center of the roadway, directly in the vehicle's path and setting the pace. Farther ahead on the right side, a couple of pedestrians continue along the street parallel to the vehicle with adequate gap. Numerous parked scooters line the right, and a parked bicycle rests at the left curb, further narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and beige pants, walking along the left side of the road, toward the ego car. The pedestrian is walking toward the road and could step into the vehicle's path, so the driver should be aware of potential crossing."}
{"id": "train_06668", "split": "train", "clip_key": "2020-0220-102630_056116_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "056116"}, "frames": ["2020-0220-102630_056116_movie_t-3.jpg", "2020-0220-102630_056116_movie_t-2.jpg", "2020-0220-102630_056116_movie_t-1.jpg", "2020-0220-102630_056116_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three or more same-direction lanes has smooth asphalt and no physical median visible, and traffic flows at a moderate pace. A pedestrian overpass and a signalized intersection are ahead, and the light is green. A yellow van ahead in the ego lane proceeds through the green light and sets the ego car's pace. A small white flatbed to the left near the curb moves slowly in its lane, constraining a leftward merge. A silver sedan in the lane to the right draws slightly ahead while continuing straight and not entering the ego lane.", "hazard_reasoning": "There is a yellow van driving in front of the ego car in the ego lane, because the light is green. Following this vehicle ensures proper spacing and allows orderly progression through the intersection, reducing the risk of sudden stops or lane changes."}
{"id": "train_06669", "split": "train", "clip_key": "2020-0210-155354_021129_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "021129"}, "frames": ["2020-0210-155354_021129_movie_t-3.jpg", "2020-0210-155354_021129_movie_t-2.jpg", "2020-0210-155354_021129_movie_t-1.jpg", "2020-0210-155354_021129_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction runs between mid-rise buildings; the asphalt looks smooth and traffic flows light to moderate. A white van ahead in the left lane drives away from the ego car, keeping its lane and gently setting the following gap. In the adjacent right lane, a dark car slightly farther ahead cruises steadily without merging. Farther ahead, a few additional vehicles in both lanes proceed smoothly, leaving clear spacing. A low shrub median separates opposing traffic.", "hazard_reasoning": "There is a white van driving in the left lane, away from the ego car. The van may change lanes or alter its speed unexpectedly, so the driver should remain alert under this situation to anticipate any sudden maneuvers."}
{"id": "train_06670", "split": "train", "clip_key": "titan_clip_490_000528_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_490_000528_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_490_000528_movie_t-3_augB1.jpg", "titan_clip_490_000528_movie_t-2_augB1.jpg", "titan_clip_490_000528_movie_t-1_augB1.jpg", "titan_clip_490_000528_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing", "environment_perception": "An urban two-way street with a solid center line and smooth pavement runs between mid-rise buildings, and traffic appears light to moderate with steady oncoming flow. A white work truck is stopped partly in the ego lane ahead with orange cones, narrowing the path and forming a small work zone. On the left beside the truck, a pedestrian wearing a cap, blue shirt, and black pants waits to cross toward the right because the parked vehicle blocks the curb area and may enter the ego lane. In the opposite lane, several cars approach, including a nearer dark sedan continuing straight and limiting room for passing.", "hazard_reasoning": "There is a pedestrian wearing a cap, wearing a blue shirt, wearing black pants, waiting to cross, on the left side of the road, to the right side, because of the parked vehicle. The pedestrian may step into the lane unexpectedly from behind the parked truck, so you should be aware and proceed cautiously."}
{"id": "train_06671", "split": "train", "clip_key": "2020-0207-101955_014239_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "014239"}, "frames": ["2020-0207-101955_014239_movie_t-3.jpg", "2020-0207-101955_014239_movie_t-2.jpg", "2020-0207-101955_014239_movie_t-1.jpg", "2020-0207-101955_014239_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban arterial with two lanes in the ego direction plus a right-turn lane has smooth pavement and no physical median; traffic is heavy with a queue toward a signalized intersection, including a covered cargo truck ahead. Directly ahead in the ego lane, a blue hatchback is stopped because of congestion ahead, holding the ego vehicle behind it. To the right, a black sedan in the right-turn lane creeps forward past the queue without entering the ego lane. On the left edge, a motorcyclist rides forward along the curbside by the guardrail, filtering past the stopped vehicles and possibly merging ahead.", "hazard_reasoning": "There is a blue hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid collision."}
{"id": "train_06672", "split": "train", "clip_key": "titan_clip_1154_000150_movie", "source": {"subset": "titan", "scenario": "clip_1154", "frame": "000150"}, "frames": ["titan_clip_1154_000150_movie_t-3.jpg", "titan_clip_1154_000150_movie_t-2.jpg", "titan_clip_1154_000150_movie_t-1.jpg", "titan_clip_1154_000150_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on roadside", "environment_perception": "A narrow urban commercial street with interlocking brick pavement and no lane markings functions as a two-way shared roadway with light, slow traffic. Ahead, a white van approaches as oncoming traffic near the center, moving slowly and occupying much of the road, which constrains the ego vehicle's path. On the right side of the road, a pedestrian in a white T-shirt walks away from the ego car along the edge because the sidewalk space is limited, staying close to the travel lane and relevant to the ego path. Another man stands at the right-side storefront near the curb, close to the roadway. Orange cones and a row of parked bicycles line the edges, narrowing the usable space.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt and walking on the right side of the road, away from the ego car, because of the lack of walking space on the sidewalk. The pedestrian's proximity to the roadway means they could unexpectedly step into traffic, so the driver should be aware of their presence."}
{"id": "train_06673", "split": "train", "clip_key": "titan_clip_1275_000222_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1275_000222_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1275_000222_movie_t-3_augB1.jpg", "titan_clip_1275_000222_movie_t-2_augB1.jpg", "titan_clip_1275_000222_movie_t-1_augB1.jpg", "titan_clip_1275_000222_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way side street with closely spaced buildings has smooth dry pavement and very light traffic as the ego vehicle proceeds slowly along a single shared lane. A large box truck is parked on the left, encroaching into the lane and narrowing the roadway. Ahead in the middle of the road, a pedestrian in a white shirt and black pants walks away from the ego vehicle to pass the parked truck, occupying the ego path and constraining its pace. No other moving vehicles or traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking in the middle of the road, away from the ego car, because of a parked vehicle. The driver should manoeuvre carefully around the pedestrian to maintain a safe distance and avoid collision."}
{"id": "train_06674", "split": "train", "clip_key": "titan_clip_870_000324_movie", "source": {"subset": "titan", "scenario": "clip_870", "frame": "000324"}, "frames": ["titan_clip_870_000324_movie_t-3.jpg", "titan_clip_870_000324_movie_t-2.jpg", "titan_clip_870_000324_movie_t-1.jpg", "titan_clip_870_000324_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "The ego vehicle travels on a narrow urban side street with a single mixed-traffic lane and no centerline, smooth pavement, and very light vehicle traffic. A pedestrian in a gray shirt and black pants walks toward the ego vehicle in the middle of the lane, detouring around a group of pedestrians standing along the right storefronts, and he occupies the ego path. The group on the right lingers near parked bicycles and slightly protrudes into the roadway, reducing the usable width. Several other pedestrians ahead move away along the center and the left margin, and their presence moderates the ego vehicle's pace. Bollards line the left edge and a small barrier is visible in the distance, adding visual narrowing but no immediate obstruction.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black pants, walking in the middle of the road, toward the ego car, because of a group of pedestrians standing on the right side of the road. The pedestrian is entering the vehicle's path, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_06675", "split": "train", "clip_key": "2020-0131-135401_037292_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "037292"}, "frames": ["2020-0131-135401_037292_movie_t-3.jpg", "2020-0131-135401_037292_movie_t-2.jpg", "2020-0131-135401_037292_movie_t-1.jpg", "2020-0131-135401_037292_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane two-way road approaches a signalized intersection with dry, smooth pavement and light traffic. Directly ahead in the ego lane, a white car is stopped at the line because the traffic light is red, holding the ego vehicle. On the cross street to the right, a small truck proceeds through the intersection, crossing the ego path while the signal remains red. A pedestrian walks along the left sidewalk near the corner without approaching the roadway. A yellow school?one warning sign stands on a pole beside the intersection.", "hazard_reasoning": "There is a white SUV stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver must stop immediately to avoid colliding with the stationary vehicle at the red light."}
{"id": "train_06676", "split": "train", "clip_key": "2020-0225-102455_000936_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "000936"}, "frames": ["2020-0225-102455_000936_movie_t-3.jpg", "2020-0225-102455_000936_movie_t-2.jpg", "2020-0225-102455_000936_movie_t-1.jpg", "2020-0225-102455_000936_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban three-lane road with smooth pavement carries moderate, slow-moving traffic toward an intersection, and there is no median. A black SUV is stopped directly ahead in the ego lane near the curb because of traffic congestion, blocking the ego vehicle's path. Slightly farther ahead in the center lane, a white van rolls forward slowly toward the junction, keeping a short gap and limiting an easy merge from the ego lane. In the right lane, a large dump truck proceeds in the same direction at low speed, passing the ego position and reducing right-side visibility. A traffic signal is visible above the intersection ahead.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle ahead under these conditions."}
{"id": "train_06677", "split": "train", "clip_key": "2020-0227-153144_006821_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "006821"}, "frames": ["2020-0227-153144_006821_movie_t-3.jpg", "2020-0227-153144_006821_movie_t-2.jpg", "2020-0227-153144_006821_movie_t-1.jpg", "2020-0227-153144_006821_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road with smooth pavement curves slightly left, with flexible bollards marking a narrow separated lane on the right; traffic is moderate with a short queue at the intersection. A silver sedan directly ahead in the ego lane is stopped for a red traffic light, keeping the ego vehicle halted behind it. Pedestrians wait on the left-side crosswalk area near the corner, remaining on the sidewalk. Oncoming vehicles move through the opposite lanes on the right, continuing past the junction without stopping. Plastic posts along the right edge of the ego lane constrain lateral space.", "hazard_reasoning": "There is a silver sedan stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to comply with the signal and avoid entering the intersection on red."}
{"id": "train_06678", "split": "train", "clip_key": "titan_clip_94_000348_movie", "source": {"subset": "titan", "scenario": "clip_94", "frame": "000348"}, "frames": ["titan_clip_94_000348_movie_t-3.jpg", "titan_clip_94_000348_movie_t-2.jpg", "titan_clip_94_000348_movie_t-1.jpg", "titan_clip_94_000348_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian at crosswalk", "environment_perception": "An urban two-way street with one lane per direction has no median and smooth pavement, lined by trees and storefronts; traffic is light as the ego vehicle proceeds in the left lane. Ahead in the same direction, a white van slows near a zebra crossing, constraining the ego vehicle's pace. A pedestrian wearing black pants steps out from the left at the crosswalk and moves toward the right, emerging from beside a parked truck and potentially entering the ego lane. A large delivery truck and a car stand parked along the left curb near the crossing, narrowing the lane and partly occluding the view.", "hazard_reasoning": "There is a pedestrian wearing black pants, crossing the street at a pedestrian crossing, from the left side to the right side. The pedestrian is entering the roadway at a crosswalk, so the driver should yield to avoid a collision."}
{"id": "train_06679", "split": "train", "clip_key": "2020-0213-143552_031427_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "031427"}, "frames": ["2020-0213-143552_031427_movie_t-3.jpg", "2020-0213-143552_031427_movie_t-2.jpg", "2020-0213-143552_031427_movie_t-1.jpg", "2020-0213-143552_031427_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around cones", "environment_perception": "An urban two-way street with one narrow lane each direction has smooth pavement and no median, and traffic is light as the ego vehicle approaches a zebra crossing. A pedestrian enters the crosswalk from the left foreground and walks across ahead, potentially occupying the ego lane. A scooter ahead in the same direction moves slowly near the centerline, modestly constraining the pace. Several pedestrians and workers stand along the left sidewalk at a small work area, and traffic cones for construction sit at the lane edge in front of the ego car, slightly narrowing the path. A yellow caution sign with a child symbol on a pole to the right is visible, and no oncoming vehicles are apparent.", "hazard_reasoning": "There are traffic cones for construction in front of the ego car. The cones mark construction ahead and may obstruct the path or sight-lines, so the driver should manoeuvre carefully to avoid the hazard."}
{"id": "train_06680", "split": "train", "clip_key": "2020-0131-103016_047284_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "047284"}, "frames": ["2020-0131-103016_047284_movie_t-3.jpg", "2020-0131-103016_047284_movie_t-2.jpg", "2020-0131-103016_047284_movie_t-1.jpg", "2020-0131-103016_047284_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial runs through a narrowed construction zone with cones and barricades creating two same-direction lanes on worn, patched pavement, and traffic moves slowly. A black hatchback ahead in the ego lane slows because traffic bunches farther ahead, directly constraining the ego car's pace. In the adjacent right lane, a white sedan travels slightly ahead at a similar low speed, remaining parallel to the ego path. Farther ahead, several cars queue within the corridor and brake intermittently. Pedestrians walk on the right sidewalk behind the barriers while construction machinery and materials line both sides, keeping the roadway confined.", "hazard_reasoning": "There is a black hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of the vehicle ahead."}
{"id": "train_06681", "split": "train", "clip_key": "2020-0207-101955_093912_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "093912"}, "frames": ["2020-0207-101955_093912_movie_t-3.jpg", "2020-0207-101955_093912_movie_t-2.jpg", "2020-0207-101955_093912_movie_t-1.jpg", "2020-0207-101955_093912_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with stopped vehicle", "environment_perception": "An urban multilane road under an elevated expressway approaches a wide, signalized intersection with clean pavement and moderate traffic; our approach is queued while cross traffic moves. A blue sedan directly ahead in the ego lane is stopped at the stop line, waiting because vehicles are driving through the intersection. A flatbed truck carrying a small van is alongside slightly ahead on the left, also waiting at the light beside us. Several vans and a small box truck pass right to left through the intersection ahead, preventing our lane from proceeding. The signal facing us shows red.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, because vehicular traffic is driving through the intersection. The driver should stop to avoid colliding with the stationary vehicle ahead."}
{"id": "train_06682", "split": "train", "clip_key": "titan_clip_1164_000042_movie", "source": {"subset": "titan", "scenario": "clip_1164", "frame": "000042"}, "frames": ["titan_clip_1164_000042_movie_t-3.jpg", "titan_clip_1164_000042_movie_t-2.jpg", "titan_clip_1164_000042_movie_t-1.jpg", "titan_clip_1164_000042_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single narrow lane each direction is lined with curbside parked vehicles on both sides; the pavement is smooth and traffic is light but the lane is constricted. Ahead in the ego lane, a white van and a few cars proceed slowly near the center while passing the parked line, which sets the pace. On the left side of the road, a pedestrian wearing a blue shirt and black pants walks toward the ego car along the roadway since parked vehicles block the usual path, and the person may edge into the ego lane. In the opposite lane, a van approaches from a distance, reducing the usable gap between the rows of parked cars. No notable traffic signals or signs stand out.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants walking toward the ego car on the left side of the road because of the parked vehicles. The pedestrian is entering the roadway due to limited sidewalk space and may step into the path, so the driver should slow down to avoid a collision."}
{"id": "train_06683", "split": "train", "clip_key": "2020-0226-101332_073027_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "073027"}, "frames": ["2020-0226-101332_073027_movie_t-3.jpg", "2020-0226-101332_073027_movie_t-2.jpg", "2020-0226-101332_073027_movie_t-1.jpg", "2020-0226-101332_073027_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with the stopped van.", "environment_perception": "A dense urban street with two same-direction lanes runs between tall buildings; the pavement is dry and smooth, and traffic is heavy and stop-and-go. A gray van directly ahead in the ego lane is stopped because congestion blocks the way. To the right, a queue of cars and a motorbike inches forward in the adjacent lane, their slow movement matching the jam and constraining the overall pace. On the left near the curb, a small white delivery scooter moves slowly along the bicycle lane, staying outside the travel lane. A large blue truck stands at the curb on the right, narrowing the adjacent lane and contributing to the bottleneck.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_06684", "split": "train", "clip_key": "2020-0210-101957_079537_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "079537"}, "frames": ["2020-0210-101957_079537_movie_t-3.jpg", "2020-0210-101957_079537_movie_t-2.jpg", "2020-0210-101957_079537_movie_t-1.jpg", "2020-0210-101957_079537_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban two-way road with one narrow lane each way and a solid yellow centerline curves gently right; the pavement looks smooth and traffic is light. A brown cement mixer truck drives ahead in the ego lane moving away, and the ego car follows at its pace. A white van approaches in the opposite lane and passes by around the bend, occupying the space beside the centerline. Another oncoming car follows behind it through the curve. Metal railings line both sides and several parked vehicles sit off the roadway to the left.", "hazard_reasoning": "There is a brown cement mixer driving, in the ego lane, away from the ego-car. The mixer's large cargo obstructs the road ahead, creating a blind spot that may hide slower traffic or hazards, so the driver should maintain safe following distance under this situation."}
{"id": "train_06685", "split": "train", "clip_key": "titan_clip_172_000480_movie", "source": {"subset": "titan", "scenario": "clip_172", "frame": "000480"}, "frames": ["titan_clip_172_000480_movie_t-3.jpg", "titan_clip_172_000480_movie_t-2.jpg", "titan_clip_172_000480_movie_t-1.jpg", "titan_clip_172_000480_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban back street with a single lane and no center line runs between storefronts; the pavement looks smooth and traffic is light with no moving vehicles. On the right edge near the ego path, a pedestrian wearing a white shirt and khaki pants stands beside a bicycle close to the roadway and may step into the lane. On the left edge near the camera, another pedestrian in a white shirt stands at the curb, slightly encroaching into the lane and narrowing the passage. Farther ahead, a small van is stopped along the right curb. A blue one-way sign on the right indicates travel straight ahead.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and khaki pants standing on the right side of the road. The pedestrian may move into the travel lane unexpectedly, posing a collision risk, so the driver should manoeuvre around the pedestrian."}
{"id": "train_06686", "split": "train", "clip_key": "2020-0203-154554_055280_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "055280"}, "frames": ["2020-0203-154554_055280_movie_t-3.jpg", "2020-0203-154554_055280_movie_t-2.jpg", "2020-0203-154554_055280_movie_t-1.jpg", "2020-0203-154554_055280_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs beneath an elevated structure, with a smooth surface and a painted gore separating a right-side auxiliary lane; traffic appears light to moderate and steady. A gray van drives ahead in the ego lane, continuing straight and setting the pace. Slightly ahead at the left edge of the lane, a motor scooter proceeds straight at similar speed, close to the van and occupying space near the ego vehicle's path. In the separated lane to the right, another small van travels parallel beyond the striped divider and does not interact immediately. Overhead blue direction boards indicate Route 20 toward Hachioji and Chofu to the left and Route 14 toward Mitaka and Ogikubo to the right.", "hazard_reasoning": "There is a gray van driving in the ego lane in front of the ego car. The van is approaching a red traffic light and may stop suddenly, so the driver should follow the vehicle ahead to maintain a safe distance under this situation."}
{"id": "train_06687", "split": "train", "clip_key": "2020-0205-103411_082465_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "082465"}, "frames": ["2020-0205-103411_082465_movie_t-3.jpg", "2020-0205-103411_082465_movie_t-2.jpg", "2020-0205-103411_082465_movie_t-1.jpg", "2020-0205-103411_082465_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and wait for green signal", "environment_perception": "An urban multi-lane arterial with painted medians and smooth pavement approaches a signalized intersection, and traffic is moderate but queued in the same direction. A white minivan directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. In the adjacent lane to the left, a white van is also stopped slightly ahead in the queue, constraining any lateral progress. On the cross street to the right, a small car proceeds leftward through the intersection, moving freely while our approach is halted. A cyclist rides ahead across the intersection from right to left, passing through the crossing area as the opposing phase runs. The traffic signal visible ahead shows red for the ego direction.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light ahead. The driver should stop to avoid colliding with the halted vehicle and prevent running the red light."}
{"id": "train_06688", "split": "train", "clip_key": "titan_clip_1316_000570_movie", "source": {"subset": "titan", "scenario": "clip_1316", "frame": "000570"}, "frames": ["titan_clip_1316_000570_movie_t-3.jpg", "titan_clip_1316_000570_movie_t-2.jpg", "titan_clip_1316_000570_movie_t-1.jpg", "titan_clip_1316_000570_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the pedestrian.", "environment_perception": "An urban commercial street with a narrow two-way roadway, no median, and dry, slightly worn pavement; traffic is light with no vehicles moving. Ahead in the middle of the lane, a pedestrian in gray walks away along the ego lane, limiting speed by occupying the path. On the left ahead, a pedestrian wearing a black T-shirt and pants and carrying an umbrella crosses from the left to the right side of the road and may enter the ego lane. Farther ahead near the center, two pedestrians continue walking away along the street without abrupt changes. A trash bin and a parked bicycle line the right curb but remain outside the travel lane.", "hazard_reasoning": "There is a lady, wearing a black t-shirt and pants, carrying an umbrella, crossing the street, from the left side to the right side of the road. The driver should yield because the pedestrian is crossing the vehicle's path and requires right of way."}
{"id": "train_06689", "split": "train", "clip_key": "titan_clip_56_000594_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_56_000594_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_56_000594_movie_t-3_augB1.jpg", "titan_clip_56_000594_movie_t-2_augB1.jpg", "titan_clip_56_000594_movie_t-1_augB1.jpg", "titan_clip_56_000594_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street with a single lane in each direction has smooth pavement and light traffic. A blue delivery truck is stopped ahead in the ego lane with its rear open, narrowing the passage and constraining the approach. A pedestrian wearing a white shirt crosses ahead from left to right in front of the ego car, moving into the lane. Another pedestrian walks along the right sidewalk beside two advertising carts that protrude slightly into the roadway, while parked bicycles line the curb and a cone sits near the left edge. A speed limit sign showing 30 is posted on a pole to the left.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, crossing the street in front of the ego car, from the left side to the right side. You should slow down to avoid collision since the pedestrian is crossing directly in your path."}
{"id": "train_06690", "split": "train", "clip_key": "2020-0131-135401_013485_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "013485"}, "frames": ["2020-0131-135401_013485_movie_t-3.jpg", "2020-0131-135401_013485_movie_t-2.jpg", "2020-0131-135401_013485_movie_t-1.jpg", "2020-0131-135401_013485_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban intersection with mid-rise buildings appears on a two-lane, two-way road; the asphalt is dry and smooth and traffic is light, with the ego vehicle paused at the line. A white van is parked along the left curb in the ego lane near the intersection, narrowing the lane and acting as an obstruction. In the oncoming lane ahead, a silver van followed by a box truck rolls toward the intersection at low speed, staying in their lane and not encroaching on the ego path. On the left corner, two pedestrians stand near the curb by the crosswalk close to the ego lane, while a few others wait on the right sidewalk. Overhead signal heads are present, and construction fencing lines the right side of the street.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane. The parked van partially blocks the driving lane and obscures the view, so the driver should carefully manoeuvre around it to avoid collision and maintain a safe path."}
{"id": "train_06691", "split": "train", "clip_key": "titan_clip_1113_000420_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1113_000420_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1113_000420_movie_t-3_augB1.jpg", "titan_clip_1113_000420_movie_t-2_augB1.jpg", "titan_clip_1113_000420_movie_t-1_augB1.jpg", "titan_clip_1113_000420_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban shopping street with a single narrow brick-paved carriageway and no median or centerline is shown; vehicular flow is minimal while pedestrian activity is heavy, and the pavement appears in good condition. A pedestrian in a gray shirt and black pants walks ahead in the middle of the road, moving away from the ego vehicle and occupying its path. On the left near the travel way, a man in a white shirt walks toward the camera while looking at his phone, edging into the lane. Farther ahead and along both sides, small groups walk by the edges and cross the roadway, constraining the vehicle's pace.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black pants, walking in the middle of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a collision under this situation."}
{"id": "train_06692", "split": "train", "clip_key": "2020-0204-103442_063321_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "063321"}, "frames": ["2020-0204-103442_063321_movie_t-3.jpg", "2020-0204-103442_063321_movie_t-2.jpg", "2020-0204-103442_063321_movie_t-1.jpg", "2020-0204-103442_063321_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane road with blue bike lanes and smooth pavement approaches a signalized intersection, and traffic is light with the overhead signal showing red. A black sedan directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. A cyclist to the right rides across the marked crosswalk from right to left ahead of the queue, traversing the ego lane. On the left sidewalk near a convenience store entrance, a pedestrian waits at the corner by the crosswalk.", "hazard_reasoning": "There is a black sedan stopped in the ego lane because of a red traffic light ahead. Drivers must stop to comply with the signal and prevent rear-end collisions."}
{"id": "train_06693", "split": "train", "clip_key": "2020-0214-102601_050949_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "050949"}, "frames": ["2020-0214-102601_050949_movie_t-3.jpg", "2020-0214-102601_050949_movie_t-2.jpg", "2020-0214-102601_050949_movie_t-1.jpg", "2020-0214-102601_050949_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial runs under an elevated structure, with same-direction lanes and a guardrail on the right; the pavement is dry and traffic is heavy and slow-moving. A blue car directly ahead in the ego lane slows and creeps due to congestion, briefly stopping as the queue builds. In the adjacent lane to the left, a tarp-covered light truck ahead rolls slowly with the line of vehicles, staying parallel to the ego car and constraining any lane change. Farther ahead across the lanes, clustered cars queue tightly and pulse between brief moves and stops, setting the overall pace. On the separated roadway to the right behind the guardrail, occasional vehicles pass but remain isolated from the ego lane.", "hazard_reasoning": "There is a blue sedan slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The ego-vehicle should slow down to maintain a safe distance and avoid a collision as traffic ahead is congested."}
{"id": "train_06694", "split": "train", "clip_key": "titan_clip_220_000444_movie", "source": {"subset": "titan", "scenario": "clip_220", "frame": "000444"}, "frames": ["titan_clip_220_000444_movie_t-3.jpg", "titan_clip_220_000444_movie_t-2.jpg", "titan_clip_220_000444_movie_t-1.jpg", "titan_clip_220_000444_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "A narrow urban two-way street with one lane per direction, no median, and brick pavement in good condition carries light, slow traffic. Ahead on the left in the ego lane, a gray box truck is stopped with its rear open while being unloaded, occupying much of the lane and constraining the ego's pace. Farther ahead near the center, a small white van stands in the street, further narrowing the available space. Pedestrians near the truck and along the right edge are standing and walking close to the carriageway, adjacent to the ego path. A cone and shop signs sit on the right curb.", "hazard_reasoning": "There is a gray truck stopped on the left side of the road, in the ego lane, because it is being unloaded. The driver needs to carefully manoeuvre around the obstructing vehicle to avoid a collision and maintain safe traffic flow."}
{"id": "train_06695", "split": "train", "clip_key": "2020-0218-103119_014402_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "014402"}, "frames": ["2020-0218-103119_014402_movie_t-3.jpg", "2020-0218-103119_014402_movie_t-2.jpg", "2020-0218-103119_014402_movie_t-1.jpg", "2020-0218-103119_014402_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial lined with mid-rise buildings has smooth pavement and separated directions by double white lines with a low median; traffic is light to moderate and flows steadily. Ahead in the ego lane, a white van drives away from the ego car at a steady pace, setting the immediate following distance. Along the left curb, a cyclist moves in the same direction near the guardrail, close to the lane edge and relevant to lateral clearance. To the right of the median, several oncoming cars approach in their lanes, remaining isolated from the ego path.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. The driver should be aware of the white van ahead as it may slow down unexpectedly."}
{"id": "train_06696", "split": "train", "clip_key": "2020-0227-104226_076869_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "076869"}, "frames": ["2020-0227-104226_076869_movie_t-3.jpg", "2020-0227-104226_076869_movie_t-2.jpg", "2020-0227-104226_076869_movie_t-1.jpg", "2020-0227-104226_076869_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential scene shows a narrow two-way road with one lane each direction, no median, and smooth pavement; traffic is light and buildings sit close to the curb. The ego vehicle travels in the left lane. A blue van ahead in the ego lane drives away from the ego car at a steady pace, moving along the center of the lane. On the right edge, a pedestrian pushing a stroller walks forward near the curb, close to the travel lane and may step into it. No oncoming vehicles are visible, and the tight roadway with utility poles beside the curb leaves limited lateral clearance.", "hazard_reasoning": "There is a blue van driving in the ego lane, away from the ego car. Drivers should follow the vehicle ahead to maintain a safe distance in case it brakes unexpectedly."}
{"id": "train_06697", "split": "train", "clip_key": "titan_clip_923_000420_movie", "source": {"subset": "titan", "scenario": "clip_923", "frame": "000420"}, "frames": ["titan_clip_923_000420_movie_t-3.jpg", "titan_clip_923_000420_movie_t-2.jpg", "titan_clip_923_000420_movie_t-1.jpg", "titan_clip_923_000420_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Stop immediately for the cyclist.", "environment_perception": "A narrow urban two-way street with one lane per direction runs between buildings, the pavement is smooth, and traffic is light. On the right side near the curb, a cyclist in a white shirt rides toward the ego vehicle because there is no bicycle lane, approaching the ego path. Ahead on the left edge, a silver van is stopped or creeping by the curb partly within the ego lane, narrowing the available space. Farther ahead at the next intersection, several pedestrians walk along the edges and begin to cross, potentially stepping into the ego lane. A no-entry sign marks a side alley on the right, and construction scaffolding on the left and a few cones on the right create tight clearances near the curbs.", "hazard_reasoning": "There is a cyclist wearing a white shirt, cycling on the right side of the road, towards the ego car, because there is no bicycle lane. The driver should stop immediately for the cyclist to avoid a potential collision."}
{"id": "train_06698", "split": "train", "clip_key": "titan_clip_531_000402_movie", "source": {"subset": "titan", "scenario": "clip_531", "frame": "000402"}, "frames": ["titan_clip_531_000402_movie_t-3.jpg", "titan_clip_531_000402_movie_t-2.jpg", "titan_clip_531_000402_movie_t-1.jpg", "titan_clip_531_000402_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian ahead.", "environment_perception": "A narrow two-way urban street with no median stretches ahead, the pavement smooth and edged by green shoulder markings, and traffic appears light. On the right in front of the ego vehicle, a pedestrian carrying a handbag walks away along the curb, keeping to the edge of the roadway. Farther ahead, another person moves away along the left side of the street. Parked vehicles line the right, including a dark sedan at a recessed parking bay, slightly narrowing the usable lane. No traffic signals or notable signs are visible, and no moving vehicles are seen in either direction.", "hazard_reasoning": "There's a pedestrian wearing black pants and a handbag, walking away from the ego car, on the left side of the road, in front of the ego car. The pedestrian could step into the travel lane unexpectedly as you approach, so maintain vigilance."}
{"id": "train_06699", "split": "train", "clip_key": "2020-0212-102546_080440_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "080440"}, "frames": ["2020-0212-102546_080440_movie_t-3.jpg", "2020-0212-102546_080440_movie_t-2.jpg", "2020-0212-102546_080440_movie_t-1.jpg", "2020-0212-102546_080440_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped truck.", "environment_perception": "An urban divided road runs through a walled corridor with a single lane in the ego direction, a concrete median on the right, and smooth pavement, and the scene moves beneath successive overpasses into a tunnel with light to moderate flow. A white van travels ahead in the ego lane at a steady speed, setting the ego vehicle's pace. Farther ahead in the same lane a larger freight truck continues straight into the tunnel, keeping a spaced queue. On the left shoulder by the wall, a white truck is stopped on the roadside, creating a stationary obstruction as traffic passes. Barriers line the median and the shoulder is narrow.", "hazard_reasoning": "There is a white truck stopped on the left side of the road. The stopped truck in the left lane may limit available space and require an unexpected maneuver under low visibility, so the driver should be aware."}
{"id": "train_06700", "split": "train", "clip_key": "2020-0131-103016_010414_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "010414"}, "frames": ["2020-0131-103016_010414_movie_t-3.jpg", "2020-0131-103016_010414_movie_t-2.jpg", "2020-0131-103016_010414_movie_t-1.jpg", "2020-0131-103016_010414_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to maintain safe distance.", "environment_perception": "An urban junction beneath an elevated roadway, with a single merging lane channelized by red bollards and damp pavement; traffic is heavy and slow under the bridge. A black sedan is stopped directly ahead in the ego lane because the flatbed truck in front of it is waiting to merge into the main flow. The flatbed truck creeps forward toward the opening beneath the structure, constraining the pace of the queue. A white van on the right waits near the merge point and could enter ahead, adding to the delay. A 40 km/h speed limit sign and an overhead 4.0 m clearance board are clearly visible.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because the vehicle in front of it is waiting to merge onto the upcoming road. Stop to maintain safe distance and anticipate the merging maneuver."}
{"id": "train_06701", "split": "train", "clip_key": "2020-0131-135401_005051_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "005051"}, "frames": ["2020-0131-135401_005051_movie_t-3.jpg", "2020-0131-135401_005051_movie_t-2.jpg", "2020-0131-135401_005051_movie_t-1.jpg", "2020-0131-135401_005051_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban two-way street with a single narrow lane each direction and smooth pavement runs between low-rise buildings; traffic is slow and briefly stopped. Strong sun glare from the upper right brightens the scene. A gray box truck sits directly ahead in the ego lane, stopped because congestion blocks the road ahead, and it fully controls the ego vehicle's pace. To the right, an oncoming small van waits near the centerline opposite the truck, remaining in its lane and posing a tight clearance. On the left sidewalk a few pedestrians walk along the roadway edge, continuing past storefronts without stepping into the carriageway. An overhead sign posts 40, and a curb island along the left narrows the usable lane.", "hazard_reasoning": "There is a gray truck stopped in the ego lane because of traffic congestion ahead. You should stop immediately to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_06702", "split": "train", "clip_key": "2020-0221-115122_018082_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "018082"}, "frames": ["2020-0221-115122_018082_movie_t-3.jpg", "2020-0221-115122_018082_movie_t-2.jpg", "2020-0221-115122_018082_movie_t-1.jpg", "2020-0221-115122_018082_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the green sedan merging", "environment_perception": "An urban scene unfolds under an elevated expressway on a three-lane one-way road with a right-side guardrail and intact but worn pavement; traffic is heavy and slow. A green sedan ahead to the right changes from the right lane into the ego lane and settles directly in front, narrowing the gap. A black minivan runs alongside in the left adjacent lane and inches forward next to the ego car, limiting space to move left. Farther ahead in the ego lane, a silver van slows with the queue and keeps a short headway that sets the pace.", "hazard_reasoning": "There is a green sedan changing lanes from the right lane to the ego lane, in front of the ego car. The sedan's maneuver may reduce your available space and require speed adjustment to avoid conflict."}
{"id": "train_06703", "split": "train", "clip_key": "titan_clip_398_000240_movie", "source": {"subset": "titan", "scenario": "clip_398", "frame": "000240"}, "frames": ["titan_clip_398_000240_movie_t-3.jpg", "titan_clip_398_000240_movie_t-2.jpg", "titan_clip_398_000240_movie_t-1.jpg", "titan_clip_398_000240_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the stopped truck", "environment_perception": "An urban commercial street in Japan is shown, a narrow two-way roadway with no median and smooth pavement, and overall traffic is light as the car approaches a zebra crossing beneath an archway. Two white cargo trucks are stopped along the left side in the ego lane just ahead, partially blocking the lane and constraining the vehicle's path. Several pedestrians are already in the crosswalk ahead, moving from left to right and slowing the approach. Another pedestrian on the right sidewalk nears the curb at the crossing and hesitates, remaining relevant to the ego lane. Bicycles are parked along the right storefronts, further narrowing the usable space near the curb.", "hazard_reasoning": "There is a white truck stopped on the left side of the road, in the ego lane. This stopped vehicle blocks your lane of travel and reduces visibility ahead, so you must adjust your path and speed to avoid it."}
{"id": "train_06704", "split": "train", "clip_key": "titan_clip_359_000678_movie", "source": {"subset": "titan", "scenario": "clip_359", "frame": "000678"}, "frames": ["titan_clip_359_000678_movie_t-3.jpg", "titan_clip_359_000678_movie_t-2.jpg", "titan_clip_359_000678_movie_t-1.jpg", "titan_clip_359_000678_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on left sidewalk", "environment_perception": "A narrow urban commercial street with no marked lanes runs straight between shopfronts, paved with interlocking blocks, and traffic is light and slow. A small dark car ahead in the middle of the roadway moves steadily forward and sets the ego vehicle's pace. On the left side, a pedestrian wearing a striped shirt walks away along the edge of the road, close to the travel path. Farther ahead near the center, another pedestrian walks away within the roadway in the ego path. Parked bicycles, cones, and stacked merchandise line the right curb, narrowing the usable space.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt, walking along the left side of the road, away from the ego car. The driver should be aware that this pedestrian could unexpectedly enter the roadway from the sidewalk, especially with limited visibility."}
{"id": "train_06705", "split": "train", "clip_key": "titan_clip_960_000306_movie", "source": {"subset": "titan", "scenario": "clip_960", "frame": "000306"}, "frames": ["titan_clip_960_000306_movie_t-3.jpg", "titan_clip_960_000306_movie_t-2.jpg", "titan_clip_960_000306_movie_t-1.jpg", "titan_clip_960_000306_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban side street with a single lane and block-paved surface runs between tall buildings; there is no median or centerline and traffic is light with no moving vehicles ahead. A black sedan is parked along the left curb in the ego lane, narrowing the available space. Farther ahead on the right, a couple of pedestrians walk along the sidewalk by the storefronts and may step near the roadway as they pass the parked car. Another pedestrian stands by a doorway on the left, stationary and not affecting the lane.", "hazard_reasoning": "There is a black sedan parked on the left side of the road, in the ego car lane. This obstruction forces the driver to carefully manoeuvre around the parked vehicle to avoid a collision."}
{"id": "train_06706", "split": "train", "clip_key": "2020-0221-115122_022665_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "022665"}, "frames": ["2020-0221-115122_022665_movie_t-3.jpg", "2020-0221-115122_022665_movie_t-2.jpg", "2020-0221-115122_022665_movie_t-1.jpg", "2020-0221-115122_022665_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road runs beneath an elevated expressway, the pavement dry and in good condition, with heavy stop-and-go flow. A white hatchback directly ahead in the ego lane is stopped because congestion blocks the lane, holding the ego car. Farther ahead, a queue of same-direction vehicles inches forward under the viaduct, keeping gaps short and limiting progress. To the right, a blue hatchback waits in a marked right-turn-only lane beside the queue and remains stationary without merging. A white sedan in that right lane creeps forward parallel to the ego vehicle. Overhead directional signs are visible and the right-turn arrows on the pavement confirm the adjacent lane's intent.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of traffic congestion ahead. The driver must stop to maintain a safe distance and avoid collision with the halted vehicle."}
{"id": "train_06707", "split": "train", "clip_key": "2020-0205-152530_017767_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "017767"}, "frames": ["2020-0205-152530_017767_movie_t-3.jpg", "2020-0205-152530_017767_movie_t-2.jpg", "2020-0205-152530_017767_movie_t-1.jpg", "2020-0205-152530_017767_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of pedestrians crossing ahead", "environment_perception": "An urban multi-lane intersection with painted channelization and flexible bollards appears clean and smooth, and traffic is light with no vehicles moving in the ego lane. Ahead in the crosswalk that spans the ego path, three pedestrians talk together while crossing from the right side of the road to the left, occupying the crosswalk and therefore governing the ego vehicle's approach. On the left side near the far curb, a small cluster of pedestrians lingers by the crosswalk edge and may enter after the group passes. Farther ahead on the right sidewalk, a lone pedestrian walks along the curb, remaining outside the roadway.", "hazard_reasoning": "There are three pedestrians talking in a group and crossing the street at a pedestrian crosswalk, from the right side of the road to the left side. The driver should be cautious of pedestrians crossing ahead to avoid a potential collision."}
{"id": "train_06708", "split": "train", "clip_key": "titan_clip_1388_000300_movie", "source": {"subset": "titan", "scenario": "clip_1388", "frame": "000300"}, "frames": ["titan_clip_1388_000300_movie_t-3.jpg", "titan_clip_1388_000300_movie_t-2.jpg", "titan_clip_1388_000300_movie_t-1.jpg", "titan_clip_1388_000300_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "A narrow urban street passes through a construction corridor toward an archway and a busier cross street; barriers and orange cones line both sides, the pavement looks damp, and traffic is light. On the right edge at mid-distance, a pedestrian wearing a hard hat and safety vest walks toward the ego-vehicle along the curb and could step into the lane. Farther ahead near the center, another pedestrian walks away toward the arch within the roadway, remaining in the ego path and constraining the approach. Beyond the arch, cars move laterally on the intersecting road as cross traffic. A triangular yield sign hangs under the arch for vehicles entering the main road.", "hazard_reasoning": "There is a pedestrian wearing a hard hat and a safety vest, and walking, on the right side of the road, towards the ego-car. The pedestrian may step into the vehicle's path, so the driver should manoeuvre carefully to avoid a collision."}
{"id": "train_06709", "split": "train", "clip_key": "titan_clip_309_000300_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_309_000300_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_309_000300_movie_t-3_augB1.jpg", "titan_clip_309_000300_movie_t-2_augB1.jpg", "titan_clip_309_000300_movie_t-1_augB1.jpg", "titan_clip_309_000300_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with two same-direction lanes and no median extends ahead; the pavement is dry and smooth, and traffic is light. A small car ahead in the left lane proceeds cautiously and slows midblock, constraining the ego vehicle's pace. A pedestrian in a white shirt carrying boxes runs from the right sidewalk to the left across the lane directly ahead, passing in front of the ego car. Another person waits near the left curb by shopfronts without entering the roadway. Orange cones and a temporary sign occupy part of the right lane ahead, slightly narrowing the space.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying boxes, running from the right side to the left side, in front of the ego car. The pedestrian may suddenly enter the vehicle's path, so the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_06710", "split": "train", "clip_key": "titan_clip_1346_000570_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1346_000570_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1346_000570_movie_t-3_augB1.jpg", "titan_clip_1346_000570_movie_t-2_augB1.jpg", "titan_clip_1346_000570_movie_t-1_augB1.jpg", "titan_clip_1346_000570_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian unloading boxes", "environment_perception": "An urban divided avenue with three lanes in the ego direction and a fenced median on the right has dry, smooth pavement and light to moderate flow. On the left curb a small truck is parked partly in the left lane, creating a narrowing in the ego lane. Beside it, a pedestrian wearing a white T-shirt, gray pants, and a cap stands unloading the truck, close to the lane and may step into it. Ahead in the same lane a white coach bus continues straight at low speed, influencing the ego vehicle's pace. Oncoming cars move toward the camera on the far side of the median without interaction.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, gray pants, and a cap, standing at the left side of the road, because he is unloading a truck parked on the left. The driver should be aware that this pedestrian unloading boxes may step into the lane unexpectedly, so maintain caution aligned with the warning."}
{"id": "train_06711", "split": "train", "clip_key": "titan_clip_1304_000204_movie", "source": {"subset": "titan", "scenario": "clip_1304", "frame": "000204"}, "frames": ["titan_clip_1304_000204_movie_t-3.jpg", "titan_clip_1304_000204_movie_t-2.jpg", "titan_clip_1304_000204_movie_t-1.jpg", "titan_clip_1304_000204_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial alley with smooth textured pavement lacks clear lane markings and functions as a narrow shared two-way street; vehicle flow is light while pedestrian activity is moderate. A pedestrian in a pink skirt carrying a handbag crosses from the left directly in front of the ego vehicle, moving right into the ego path. Another pedestrian stands at the right edge near the corner, pausing to cross and potentially entering the path. Several pedestrians ahead on the left continue walking away along the street, keeping close to the travel way and constraining the ego vehicle's pace.", "hazard_reasoning": "There is a pedestrian wearing a pink skirt and carrying a handbag, crossing the street in front of the ego car, from the left side. Slowing down will reduce the risk of collision by giving the driver more time to react and stop safely if the pedestrian continues into the vehicle's path."}
{"id": "train_06712", "split": "train", "clip_key": "2020-0127-132751_087968_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "087968"}, "frames": ["2020-0127-132751_087968_movie_t-3.jpg", "2020-0127-132751_087968_movie_t-2.jpg", "2020-0127-132751_087968_movie_t-1.jpg", "2020-0127-132751_087968_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with a central fence median is shown; our carriageway has two lanes and the left lane is tapering to merge right, with worn pavement and moderate, slow-moving traffic. A blue truck ahead in the ego lane slows in a short queue because of traffic congestion, constraining the ego vehicle's pace. A small white car farther ahead in the same lane also creeps forward in line, continuing the slowdown. Several pedestrians wait and walk at the bus stop on the left sidewalk, staying off the roadway.", "hazard_reasoning": "There is a blue truck slowing down in the ego lane, after the ego car has changed to the left lane, because of traffic congestion. The truck's reduced speed ahead increases the risk of a rear-end collision, so the driver should decelerate smoothly to maintain a safe following distance."}
{"id": "train_06713", "split": "train", "clip_key": "2020-0131-135401_031859_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "031859"}, "frames": ["2020-0131-135401_031859_movie_t-3.jpg", "2020-0131-135401_031859_movie_t-2.jpg", "2020-0131-135401_031859_movie_t-1.jpg", "2020-0131-135401_031859_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each way runs between mid-rise buildings, bordered by low railings and narrow sidewalks. The pavement is smooth with a solid orange centerline, and traffic is light. Ahead in the ego lane, a white sedan slows and stops for a red traffic light, briefly constraining the ego car's pace. An oncoming compact car approaches in the right lane and passes steadily. Pedestrians on both sidewalks walk by storefronts and wait near the railings without stepping into the road.", "hazard_reasoning": "There's a white sedan stopping in front of the ego car in the ego lane because of red traffic light. The driver must stop to maintain a safe distance and avoid colliding with the halted vehicle under this situation."}
{"id": "train_06714", "split": "train", "clip_key": "titan_clip_257_000438_movie", "source": {"subset": "titan", "scenario": "clip_257", "frame": "000438"}, "frames": ["titan_clip_257_000438_movie_t-3.jpg", "titan_clip_257_000438_movie_t-2.jpg", "titan_clip_257_000438_movie_t-1.jpg", "titan_clip_257_000438_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban alley with a single shared lane and no divider runs straight ahead between close buildings; the pavement looks clean and traffic is empty. On the right edge near a doorway, a pedestrian in a white shirt carries a bowl and stands on the curb close to the travel path, so the person is relevant to the ego vehicle. A bicycle is parked along the left wall, and planters and a small sign cluster along the right narrow the usable lane. Mild sun glare from ahead reduces contrast but does not obscure the view.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a bowl, standing on the right side of the road. The driver should manoeuvre carefully because the pedestrian may step into the narrow lane unexpectedly."}
{"id": "train_06715", "split": "train", "clip_key": "2020-0204-150838_072140_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "072140"}, "frames": ["2020-0204-150838_072140_movie_t-3.jpg", "2020-0204-150838_072140_movie_t-2.jpg", "2020-0204-150838_072140_movie_t-1.jpg", "2020-0204-150838_072140_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway with three same-direction lanes runs alongside a concrete barrier and elevated structure; the pavement is smooth and traffic flows at a moderate, steady pace. A red semi-truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. In the lane to the left, a white van slightly ahead continues steadily and stays in its lane, limiting an immediate lane change. In the far-left lane, a dark car comes up from behind and overtakes, remaining in its lane as it passes. No signals or speed signs are visible.", "hazard_reasoning": "There is a red semi-truck slowing in front of the ego car, in the ego lane. The red truck is decelerating ahead, so you should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_06716", "split": "train", "clip_key": "titan_clip_194_000018_movie", "source": {"subset": "titan", "scenario": "clip_194", "frame": "000018"}, "frames": ["titan_clip_194_000018_movie_t-3.jpg", "titan_clip_194_000018_movie_t-2.jpg", "titan_clip_194_000018_movie_t-1.jpg", "titan_clip_194_000018_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban backstreet runs between tall buildings, a single narrow lane without a centerline or median, with smooth light paving and very light traffic. A couple of pedestrians are visible far ahead in the lane and along the left side, walking away and sharing the roadway. No same-direction or oncoming vehicles appear. Bicycles are parked along the right frontage near storefronts, slightly narrowing the edge. Bollards and shop signs line both sides, and no traffic signals or posted speed signs are evident.", "hazard_reasoning": "There are no hazards present in this scene, so no warning is necessary."}
{"id": "train_06717", "split": "train", "clip_key": "titan_clip_301_000498_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_301_000498_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_301_000498_movie_t-3_augB1.jpg", "titan_clip_301_000498_movie_t-2_augB1.jpg", "titan_clip_301_000498_movie_t-1_augB1.jpg", "titan_clip_301_000498_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian directing traffic", "environment_perception": "An urban two-way intersection with narrow lanes and no median is ahead; the pavement looks sound and overall traffic is light but momentarily controlled. In front of the ego car, a pedestrian in blue pants and a blue jacket stands in the middle of the road directing traffic and pausing the flow at the intersection. On the cross street to the left, a teal cargo truck is stopped near the corner and partly occupies the approach, constraining space. Behind the traffic controller, a bicyclist moves slowly from right to left across the junction, crossing the ego vehicle's path. On the near left, workers with a striped barricade indicate a small work zone at the corner.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a blue jacket, directing traffic, at an intersection, in the middle of the road, in front of the ego car. The pedestrian may signal vehicles to stop or alter their path unexpectedly, so the driver should be aware to adjust speed and avoid conflicts."}
{"id": "train_06718", "split": "train", "clip_key": "titan_clip_934_000492_movie", "source": {"subset": "titan", "scenario": "clip_934", "frame": "000492"}, "frames": ["titan_clip_934_000492_movie_t-3.jpg", "titan_clip_934_000492_movie_t-2.jpg", "titan_clip_934_000492_movie_t-1.jpg", "titan_clip_934_000492_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban street with a single moving lane and curbside parking on both sides has no median and smooth pavement; traffic is light and slow. Ahead in the ego lane, a white van proceeds cautiously past parked cars, constraining the ego vehicle's pace. On the right curb just ahead, a white box truck is parked with its rear lift down as it is being unloaded, narrowing the lane. On the left sidewalk near the curb, two pedestrians, one with an umbrella, walk and pause by the parked cars without stepping into the roadway. Additional parked vehicles reduce lateral clearance.", "hazard_reasoning": "There is a white truck parked on the right side of the road, because it is being unloaded. The parked and unloading truck partially blocks the roadway and sidewalk, requiring the driver to manoeuvre to avoid colliding with it or endangering pedestrians."}
{"id": "train_06719", "split": "train", "clip_key": "titan_clip_710_000420_movie", "source": {"subset": "titan", "scenario": "clip_710", "frame": "000420"}, "frames": ["titan_clip_710_000420_movie_t-3.jpg", "titan_clip_710_000420_movie_t-2.jpg", "titan_clip_710_000420_movie_t-1.jpg", "titan_clip_710_000420_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist.", "environment_perception": "An urban residential two-way street with a single narrow lane and clean pavement runs between buildings, with a cone-lined work zone on the left; traffic is light and slow. Ahead on the right, a cyclist pulling a cart is stopped at the curb, slightly intruding into the lane. Along the left edge beside the cones, a bicyclist travels slowly in the same direction, limiting the space to pass. Far ahead in the opposing lane, an oncoming scooter approaches. Several parked bicycles with cargo frames sit along the right shoulder, further tightening the corridor.", "hazard_reasoning": "There is a cyclist pulling a cart and stopped on the right side of the road. The cyclist blocks part of the driving lane, so the driver should manoeuvre around safely to avoid a collision."}
{"id": "train_06720", "split": "train", "clip_key": "titan_clip_285_000420_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_285_000420_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_285_000420_movie_t-3_augB1.jpg", "titan_clip_285_000420_movie_t-2_augB1.jpg", "titan_clip_285_000420_movie_t-1_augB1.jpg", "titan_clip_285_000420_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with single lanes and no median runs between low buildings; the pavement looks sound and traffic is light. A pedestrian in a pink shirt and black skirt steps out from the left sidewalk ahead and walks across to the right, passing directly in front of the ego vehicle and constraining its pace. A large box truck sits along the right curb in the oncoming lane a short distance ahead, narrowing the roadway and partly hiding the far side where the pedestrian completes the crossing. Bicycles are parked at a storefront on the left but remain off the roadway.", "hazard_reasoning": "There is a pedestrian wearing a pink shirt and black skirt, crossing the street in front of the ego car, from the left side to the right side. Slow down because the pedestrian is crossing in front of the vehicle and may enter its path."}
{"id": "train_06721", "split": "train", "clip_key": "2020-0220-102630_096443_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "096443"}, "frames": ["2020-0220-102630_096443_movie_t-3.jpg", "2020-0220-102630_096443_movie_t-2.jpg", "2020-0220-102630_096443_movie_t-1.jpg", "2020-0220-102630_096443_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with two same-direction lanes and a painted median has smooth pavement and moderate flow that bunches at a signalized intersection. A yellow hatchback directly ahead in the ego lane is stopped for the red light, so the ego vehicle queues behind it. In the adjacent right lane, a small flatbed truck ahead-right slows to a stop near the line, remaining parallel to the hatchback and partly blocking the view of the junction. Slightly back to the left, a yellow taxi in the neighboring lane also slows and waits, matching the queue without impeding the ego lane. Overhead traffic signals beneath a pedestrian footbridge show red.", "hazard_reasoning": "There is a yellow hatchback stopped in the ego lane because of the red traffic light ahead at the intersection. Stopping prevents a collision and ensures compliance with the traffic signal."}
{"id": "train_06722", "split": "train", "clip_key": "2020-0129-105040_068587_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "068587"}, "frames": ["2020-0129-105040_068587_movie_t-3.jpg", "2020-0129-105040_068587_movie_t-2.jpg", "2020-0129-105040_068587_movie_t-1.jpg", "2020-0129-105040_068587_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked truck.", "environment_perception": "An urban neighborhood street with one narrow lane in each direction and a painted centerline appears dry and well kept, with light traffic and no visible oncoming vehicles. The ego nears a zebra crossing and then a straight segment bordered by low guardrails and close-set buildings. A white box truck stands ahead on the left curb with its rear open, parked for unloading and partially occupying the ego lane, reducing the passable width. A cyclist at the left side by the crosswalk rides across the ego's path toward the right, momentarily constraining the ego's approach.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. The parked truck partially blocks the left lane, so you should manoeuvre around it to avoid collision."}
{"id": "train_06723", "split": "train", "clip_key": "2020-0225-102455_010309_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "010309"}, "frames": ["2020-0225-102455_010309_movie_t-3.jpg", "2020-0225-102455_010309_movie_t-2.jpg", "2020-0225-102455_010309_movie_t-1.jpg", "2020-0225-102455_010309_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane in each direction runs between mid-rise buildings, with smooth pavement and a narrow raised median; traffic is light to moderate. Ahead in the ego lane, a black dump truck drives straight at a steady pace, constraining the ego vehicle's speed. To the right in the oncoming lane, a white car approaches and passes by, remaining separated by the median. Near the left curb beside the ego vehicle, a dark car stands at the edge and does not enter the lane. An overhead sign shows 50 and multiple no-parking signs are posted.", "hazard_reasoning": "There is a black truck driving in the ego lane, in front of the ego car, because of green traffic lights. Following the vehicle ahead allows the driver to maintain a safe distance and keep smooth traffic flow under the green signal."}
{"id": "train_06724", "split": "train", "clip_key": "2020-0228-102841_077197_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "077197"}, "frames": ["2020-0228-102841_077197_movie_t-3.jpg", "2020-0228-102841_077197_movie_t-2.jpg", "2020-0228-102841_077197_movie_t-1.jpg", "2020-0228-102841_077197_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road approaches a signalized intersection with smooth pavement and moderate traffic that comes to a stop for the light. A white van is stopped ahead in the ego lane at the red light, holding the ego vehicle. Several pedestrians cross the wide zebra crossing in front of the queue, moving right to left and occupying the path beyond the stop line. In the adjacent right lane, a silver minivan waits slightly ahead near the crosswalk, aligned with the stop. In the left adjacent lane, a white sedan also queues at the intersection. The overhead traffic signal clearly shows red.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver needs to stop promptly to maintain a safe distance and avoid a collision with the halted vehicle."}
{"id": "train_06725", "split": "train", "clip_key": "2020-0218-151547_009357_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0218-151547_009357_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0218-151547_009357_movie_t-3_augB1.jpg", "2020-0218-151547_009357_movie_t-2_augB1.jpg", "2020-0218-151547_009357_movie_t-1_augB1.jpg", "2020-0218-151547_009357_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Yield to motorcycle merging ahead", "environment_perception": "An urban multi-lane arterial with a central divider and smooth pavement carries light to moderate same-direction traffic toward a signalized intersection ahead. A black motorcycle comes from the left lane and cuts across in front of the ego car into the ego lane, briefly taking the path. Farther ahead, a large coach in the middle lanes continues straight and loosely sets the pace for following vehicles. To the right, a line of cars in adjacent lanes slows near the intersection, creating light side-by-side congestion. Bright sun glare from the upper left casts long shadows across the roadway.", "hazard_reasoning": "There is a black motorcycle moving from the left lane, and cutting in front of the ego-car, into the ego-lane. You should yield to the motorcycle merging into your lane to prevent a collision."}
{"id": "train_06726", "split": "train", "clip_key": "2020-0131-103016_074879_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "074879"}, "frames": ["2020-0131-103016_074879_movie_t-3.jpg", "2020-0131-103016_074879_movie_t-2.jpg", "2020-0131-103016_074879_movie_t-1.jpg", "2020-0131-103016_074879_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane road runs between tall buildings; the asphalt appears smooth and traffic is heavy and mostly stopped, with overhead signs showing all lanes continue straight. Directly ahead in the ego lane, a white minivan is stopped due to congestion and blocks the path. In the right lane, a white box truck creeps forward alongside and may edge toward the ego lane. To the left, a black taxi and nearby vans advance slowly in parallel, keeping gaps tight and limiting any lane changes.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car because of traffic congestion ahead. You should stop to avoid collision with halted traffic."}
{"id": "train_06727", "split": "train", "clip_key": "titan_clip_1384_000396_movie", "source": {"subset": "titan", "scenario": "clip_1384", "frame": "000396"}, "frames": ["titan_clip_1384_000396_movie_t-3.jpg", "titan_clip_1384_000396_movie_t-2.jpg", "titan_clip_1384_000396_movie_t-1.jpg", "titan_clip_1384_000396_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with buildings tight to the curb has no centerline or median, and the pavement appears dry and smooth; traffic is light as the vehicle moves ahead. Along the left curb, a row of silver vans is parked, some protruding into the travel lane and narrowing the passage. On the right edge near shuttered storefronts, a pedestrian wearing a white shirt walks toward the ego while rolling a scooter, close to the lane and potentially encroaching on the path. Several bicycles are parked against the right wall just ahead, further tightening the right margin.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking with a scooter, on the right side of the road, towards the ego car. The pedestrian may step into the roadway unexpectedly, so the driver should slow down to avoid a collision."}
{"id": "train_06728", "split": "train", "clip_key": "titan_clip_352_000126_movie", "source": {"subset": "titan", "scenario": "clip_352", "frame": "000126"}, "frames": ["titan_clip_352_000126_movie_t-3.jpg", "titan_clip_352_000126_movie_t-2.jpg", "titan_clip_352_000126_movie_t-1.jpg", "titan_clip_352_000126_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban two-way street with mid-rise buildings and good pavement runs straight, with no centerline and light traffic. Orange cones and small posts line the left curb, slightly narrowing the usable lane. An oncoming cyclist approaches along the right edge of the roadway, riding toward the camera and likely to pass close to the ego lane. Far ahead in the same lane, another cyclist moves away along the center of the road, currently distant and not affecting pace. Parked vehicles sit in recessed driveways on the right and remain stationary.", "hazard_reasoning": "There are no visible hazards in this scenario, so no specific driver warning is necessary."}
{"id": "train_06729", "split": "train", "clip_key": "titan_clip_813_000372_movie", "source": {"subset": "titan", "scenario": "clip_813", "frame": "000372"}, "frames": ["titan_clip_813_000372_movie_t-3.jpg", "titan_clip_813_000372_movie_t-2.jpg", "titan_clip_813_000372_movie_t-1.jpg", "titan_clip_813_000372_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "A narrow urban one-way street with a single lane and smooth pavement runs between close buildings, and traffic remains light. Ahead on the right, a gray box truck is parked for unloading with its rear open and cones placed, encroaching slightly into the lane and shaping the ego vehicle's path. A cyclist rides ahead near the center of the lane in the same direction, continuing past the truck and potentially constraining pace. On the left sidewalk, a pedestrian walks along storefronts near the curb while staying off the roadway. No notable signals are visible.", "hazard_reasoning": "There is a gray truck parked on the right side of the road, because it is being unloaded. The parked truck partially blocks the lane, so the driver should carefully manoeuvre around it to avoid a collision."}
{"id": "train_06730", "split": "train", "clip_key": "2020-0206-142535_014527_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "014527"}, "frames": ["2020-0206-142535_014527_movie_t-3.jpg", "2020-0206-142535_014527_movie_t-2.jpg", "2020-0206-142535_014527_movie_t-1.jpg", "2020-0206-142535_014527_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban multi-lane signalized intersection with wide zebra crosswalks and smooth pavement sits amid midrise buildings, and traffic moves at a moderate pace as the ego vehicle waits at the line. Ahead, a silver box truck turns right across the junction from the left side to the right, passing directly in front and dictating the stop. On the left, a green taxi also makes a right turn from the left side toward the right, briefly posing a potential entry into the ego lane. From the right, a silver hatchback proceeds through the intersection ahead without cutting into the ego path. Farther left, a dark sedan travels across on the far side with no interaction. Pedestrians remain on the sidewalks near the corners and do not step into the crosswalk.", "hazard_reasoning": "There is a green taxi making a right turn on the left side of the intersection, from the left side to the right side. Yield to avoid collision, as the taxi may cut into your lane unexpectedly."}
{"id": "train_06731", "split": "train", "clip_key": "titan_clip_130_000024_movie", "source": {"subset": "titan", "scenario": "clip_130", "frame": "000024"}, "frames": ["titan_clip_130_000024_movie_t-3.jpg", "titan_clip_130_000024_movie_t-2.jpg", "titan_clip_130_000024_movie_t-1.jpg", "titan_clip_130_000024_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban side street with block paving runs between tall buildings, forming a single shared lane with no distinct sidewalk and light, slow traffic. Ahead in the center of the lane, a pedestrian wearing black pants and a white shirt carries a bag and walks away in the middle of the road where no sidewalk is present, directly in the ego path. On the right edge a second pedestrian walks away along the curb, parallel to the ego vehicle. Farther ahead on the right, a small box truck stands parked and narrows the passage, while bicycles and planters line the left edge.", "hazard_reasoning": "There is a male pedestrian wearing black pants, a white shirt and carrying a bag, walking away from the ego-car, in the middle of the road, because there is no sidewalk. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_06732", "split": "train", "clip_key": "titan_clip_1156_000162_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1156_000162_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1156_000162_movie_t-3_augB1.jpg", "titan_clip_1156_000162_movie_t-2_augB1.jpg", "titan_clip_1156_000162_movie_t-1_augB1.jpg", "titan_clip_1156_000162_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist crossing ahead", "environment_perception": "An urban multi-lane street with midrise buildings has two lanes in the ego direction, no physical median, and worn asphalt; traffic is light in both directions. Large orange 40 speed markings are painted on the roadway. A black SUV slightly ahead in the adjacent right lane travels straight and gradually pulls ahead, overtaking while remaining in its lane. A white light truck passes close on the right edge and continues ahead in the right lane, briefly narrowing lateral space. Far ahead in the ego lane, a small car moves away steadily, serving as the vehicle the ego follows at a distance.", "hazard_reasoning": "There is a cyclist wearing black clothing, on the right side of the road, attempting to cross the street. The driver should be aware of the cyclist's crossing intention so as to anticipate their movement and avoid a collision."}
{"id": "train_06733", "split": "train", "clip_key": "2020-0203-154554_027315_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "027315"}, "frames": ["2020-0203-154554_027315_movie_t-3.jpg", "2020-0203-154554_027315_movie_t-2.jpg", "2020-0203-154554_027315_movie_t-1.jpg", "2020-0203-154554_027315_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop now", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between tall buildings, the pavement is dry and smooth, and traffic is heavy and mostly stopped near an elevated expressway. Ahead in the ego lane, a truck is stopped due to congestion and blocks the ego car's path. To the left, a black taxi and a silver van run slowly alongside the ego vehicle, limiting space to merge. In the right lane, a white microvan slightly ahead creeps forward parallel to the truck, also constraining a lane change. No oncoming traffic is visible on this stretch.", "hazard_reasoning": "There is a white truck stopped in the ego lane because of traffic congestion ahead, in front of the ego car. The driver should stop to avoid a collision with the halted vehicle caused by the congested traffic."}
{"id": "train_06734", "split": "train", "clip_key": "titan_clip_179_000432_movie", "source": {"subset": "titan", "scenario": "clip_179", "frame": "000432"}, "frames": ["titan_clip_179_000432_movie_t-3.jpg", "titan_clip_179_000432_movie_t-2.jpg", "titan_clip_179_000432_movie_t-1.jpg", "titan_clip_179_000432_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "A narrow urban two-way street with no centerline runs between mid-rise buildings, the pavement is smooth, and traffic is very light with only cyclists and pedestrians ahead. A bicyclist rides ahead near the center of the lane, moving away from the ego vehicle and potentially constraining its pace on the tight roadway. On the right edge, a tall man in blue pants walks away from the car while overtaking another pedestrian, briefly occupying more of the roadway near the travel path. Slightly farther ahead on the right, another person walks in the same direction close to the curb and remains outside the ego lane. A no-parking sign is visible on the left, and several parked bicycles narrow the corridor.", "hazard_reasoning": "There is a tall man wearing blue pants and walking on the right side of the road, away from the ego car, because he is passing another pedestrian. The driver should be prepared to manoeuvre carefully because the pedestrian is close to the roadway edge and may step into traffic."}
{"id": "train_06735", "split": "train", "clip_key": "2020-0226-140503_102838_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "102838"}, "frames": ["2020-0226-140503_102838_movie_t-3.jpg", "2020-0226-140503_102838_movie_t-2.jpg", "2020-0226-140503_102838_movie_t-1.jpg", "2020-0226-140503_102838_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with shops on both sides stretches ahead as the ego car proceeds in the left-hand lane beside a low hedge median; the pavement is dry and slightly worn, and traffic is light. A white box truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. Beyond the median to the right, a few oncoming cars move steadily and stay separated from the ego path. On the left sidewalk, a pedestrian walks along the storefronts without approaching the roadway. A blue overhead direction sign is visible above the road.", "hazard_reasoning": "There is a white truck that is slowing down in front of the ego car. The driver should slow down to maintain a safe following distance and avoid collision with the decelerating vehicle."}
{"id": "train_06736", "split": "train", "clip_key": "titan_clip_397_000354_movie", "source": {"subset": "titan", "scenario": "clip_397", "frame": "000354"}, "frames": ["titan_clip_397_000354_movie_t-3.jpg", "titan_clip_397_000354_movie_t-2.jpg", "titan_clip_397_000354_movie_t-1.jpg", "titan_clip_397_000354_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single left-driving lane and no median unfolds ahead; the pavement is dark and smooth, and traffic is light. The lane narrows where construction cones line the left curb. A white car ahead in the same lane moves slowly toward the distant arcade, setting the pace for the ego-vehicle. On the left edge, a small delivery truck loaded with crates stands beside the cones, partially intruding into the lane and squeezing the path. Farther ahead, a pedestrian in a blue shirt and gray pants crosses from the left side toward the right, briefly entering the ego lane and becoming the main conflict to watch.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and gray pants, crossing the street from the left side of the road to the right side. The pedestrian is moving into the vehicle's path, so the driver should slow down to avoid a collision."}
{"id": "train_06737", "split": "train", "clip_key": "titan_clip_685_000222_movie", "source": {"subset": "titan", "scenario": "clip_685", "frame": "000222"}, "frames": ["titan_clip_685_000222_movie_t-3.jpg", "titan_clip_685_000222_movie_t-2.jpg", "titan_clip_685_000222_movie_t-1.jpg", "titan_clip_685_000222_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of pedestrian on right side", "environment_perception": "An urban commercial street with a narrow two-way carriageway has smooth pavement and no median, and vehicle traffic is light while pedestrian activity is heavy. The ego vehicle proceeds along the left side as several people occupy the roadway ahead. On the right, a pedestrian in a blue T-shirt walks toward the ego vehicle and diagonally into the lane, encroaching on the path. At the left edge near the foreground, another pedestrian moves from the sidewalk into the street toward the center, close to the ego lane. Farther ahead in the middle of the road, a small group of pedestrians walks along and across the lane, setting the pace. Advertising boards line the right sidewalk but remain clear of the travelway.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt and walking on the right side of the road, towards the ego vehicle. The driver should be aware because the pedestrian may step into the lane unexpectedly."}
{"id": "train_06738", "split": "train", "clip_key": "2020-0220-151845_046460_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "046460"}, "frames": ["2020-0220-151845_046460_movie_t-3.jpg", "2020-0220-151845_046460_movie_t-2.jpg", "2020-0220-151845_046460_movie_t-1.jpg", "2020-0220-151845_046460_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban roadway runs under an elevated structure with two lanes in the ego direction, guarded by railings on both sides; the pavement looks smooth and traffic is moderate and slow. A red flatbed truck with a tarped load is directly ahead in the ego lane and slows, constraining the ego car's pace. In the adjacent right lane a silver minivan slightly ahead continues forward at a steady speed, overtaking the truck. Farther ahead in the right lane a line of cars moves slowly, while on a parallel roadway beyond the left barrier several dump trucks creep along. Green overhead guide signs indicate E20 and an entrance toward Eifuku 900 m ahead.", "hazard_reasoning": "There is a red truck slowing in front of the ego car, in the ego lane. The driver should slow down to maintain a safe following distance and avoid a potential collision."}
{"id": "train_06739", "split": "train", "clip_key": "2020-0206-101736_003786_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "003786"}, "frames": ["2020-0206-101736_003786_movie_t-3.jpg", "2020-0206-101736_003786_movie_t-2.jpg", "2020-0206-101736_003786_movie_t-1.jpg", "2020-0206-101736_003786_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the stopped bus ahead", "environment_perception": "An urban commercial street with two same-direction lanes and no median is visible, bounded by metal railings along both sidewalks; the pavement is dry and worn and traffic is moderate. A red taxi directly ahead in the left lane moves slowly, constraining the ego vehicle's pace. Farther ahead to the right, a green and white bus is stopped in the right lane, occupying that lane for traffic behind it. Numerous pedestrians walk along the sidewalks behind the railings and stay clear of the roadway.", "hazard_reasoning": "There is a green and white bus stopped in the right lane. Because the bus blocks the traffic lane, you should be cautious and adjust your speed or change lanes to pass safely."}
{"id": "train_06740", "split": "train", "clip_key": "2020-0212-102546_028297_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "028297"}, "frames": ["2020-0212-102546_028297_movie_t-3.jpg", "2020-0212-102546_028297_movie_t-2.jpg", "2020-0212-102546_028297_movie_t-1.jpg", "2020-0212-102546_028297_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction runs between mid-rise buildings, divided by a narrow median; the pavement is dry and traffic is moderate and steady. Ahead in the left lane, a white van drives away from the ego car, maintaining speed with the flow. Farther ahead, a white box truck continues straight near the center of the roadway and sets the pace for vehicles in front. On the right, oncoming traffic including a white van approaches in its lanes and passes by without affecting the ego path. Overhead blue directional signs and signal heads are visible at the next intersection.", "hazard_reasoning": "There is a white van driving in the left lane, away from the ego car. The white van may change lanes unexpectedly and cut into your lane, so you should stay alert and maintain a safe buffer."}
{"id": "train_06741", "split": "train", "clip_key": "2020-0220-102630_043057_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "043057"}, "frames": ["2020-0220-102630_043057_movie_t-3.jpg", "2020-0220-102630_043057_movie_t-2.jpg", "2020-0220-102630_043057_movie_t-1.jpg", "2020-0220-102630_043057_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane same-direction road runs beneath an elevated expressway, bordered by a right-side fence and dry pavement, with traffic moving slowly due to a roadside work zone on the left. A white box truck directly ahead in the ego lane slows and inches forward, constraining the car's pace. Slightly ahead in the left lane, a dark van creeps alongside the truck, leaving little room to pass. At the far left, road workers stand by cones, a small service van, and a larger work vehicle, and their setup narrows the roadway. No signals are visible, only the coned-off maintenance area.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane. The sudden deceleration of the truck ahead could force the ego vehicle to brake quickly to avoid a rear-end collision, so the driver should adjust speed accordingly."}
{"id": "train_06742", "split": "train", "clip_key": "2020-0214-102601_061081_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "061081"}, "frames": ["2020-0214-102601_061081_movie_t-3.jpg", "2020-0214-102601_061081_movie_t-2.jpg", "2020-0214-102601_061081_movie_t-1.jpg", "2020-0214-102601_061081_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with two same-direction lanes, a barrier wall to the left and a curbside verge to the right. The pavement is dry and traffic is heavy, moving in stop-and-go. A blue hatchback directly ahead in the ego lane is stopped, holding the ego vehicle at a standstill. To the left, a white minivan in the adjacent lane creeps forward alongside without changing lanes. Farther ahead, several cars and a box truck in the left lane proceed slowly under the bridge and set the pace. A traffic signal is visible in the distance at the next intersection.", "hazard_reasoning": "A blue hatchback is stopped in front of the ego car. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_06743", "split": "train", "clip_key": "titan_clip_560_000120_movie", "source": {"subset": "titan", "scenario": "clip_560", "frame": "000120"}, "frames": ["titan_clip_560_000120_movie_t-3.jpg", "titan_clip_560_000120_movie_t-2.jpg", "titan_clip_560_000120_movie_t-1.jpg", "titan_clip_560_000120_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban shopping street without a centerline stretches ahead, with smooth reddish pavement and several manhole covers; vehicular flow is very light while pedestrians are common. The ego vehicle proceeds along a single shared lane bordered by storefronts and curbside signboards. A pedestrian wearing a black T-shirt and backpack walks toward the ego car in the middle of the lane directly ahead, constraining its path. On the right at the curb, a person stands beside a signboard close to the roadway and may step into the lane. Farther ahead on the left, two pedestrians walk along the edge in the same direction, staying clear of the path.", "hazard_reasoning": "There's a pedestrian wearing a black t-shirt, carrying a backpack, and walking in front of the ego car, toward the ego car. The driver should carefully manoeuvre to avoid a collision and ensure pedestrian safety."}
{"id": "train_06744", "split": "train", "clip_key": "2020-0131-135401_002165_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "002165"}, "frames": ["2020-0131-135401_002165_movie_t-3.jpg", "2020-0131-135401_002165_movie_t-2.jpg", "2020-0131-135401_002165_movie_t-1.jpg", "2020-0131-135401_002165_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with a solid yellow centerline runs between close-set buildings; the pavement is dry and traffic is otherwise light but the ego vehicle pauses. A white box truck is stopped directly ahead in the ego lane, blocking the path and constraining the ego car's movement. No oncoming vehicles pass in the opposite lane, and no pedestrians or cyclists enter the roadway in this scene. Streetfront poles and fixtures line both sides, creating a confined corridor with limited lateral clearance.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. Stop is required because the halted truck blocks the view ahead and continuing could lead to a rear-end collision if the driver does not brake in time."}
{"id": "train_06745", "split": "train", "clip_key": "titan_clip_644_000180_movie", "source": {"subset": "titan", "scenario": "clip_644", "frame": "000180"}, "frames": ["titan_clip_644_000180_movie_t-3.jpg", "titan_clip_644_000180_movie_t-2.jpg", "titan_clip_644_000180_movie_t-1.jpg", "titan_clip_644_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrians walking toward you", "environment_perception": "An urban commercial street with a single narrow two-way carriageway and no median, smooth pavement, and light vehicle traffic with no cars immediately ahead or oncoming. A group of pedestrians ahead along the right edge of the road walks toward the ego vehicle, partly in the lane and potentially encroaching on its path. Another pedestrian on the left sidewalk near the curb holds an umbrella and walks parallel to traffic without entering the roadway. Farther ahead, additional pedestrians appear along both sides, intermittently using the roadway and influencing the pace through this shared space.", "hazard_reasoning": "There are pedestrians walking on the right side of the road, toward the ego car. The driver should be aware because these pedestrians may enter the vehicle's path unexpectedly."}
{"id": "train_06746", "split": "train", "clip_key": "titan_clip_14_000270_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_14_000270_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_14_000270_movie_t-3_augB1.jpg", "titan_clip_14_000270_movie_t-2_augB1.jpg", "titan_clip_14_000270_movie_t-1_augB1.jpg", "titan_clip_14_000270_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for crossing pedestrian", "environment_perception": "An urban shopping street features a narrow single-lane brick-paved roadway with no median; the surface looks smooth and vehicle traffic is light while pedestrians dominate. Ahead in the ego lane, a pedestrian wearing black trousers, a blue T-shirt, and sports shoes crosses left to right directly in front of the car, briefly occupying the path. Farther ahead, several pedestrians walk along the center of the lane and along the left side, moving forward and potentially drifting into the vehicle's line. On the right margin near a hotel entrance, a couple of pedestrians linger by the curb as if about to cross, staying near the edge. Orange cones at the right-side driveway sit off the travel lane.", "hazard_reasoning": "There is a pedestrian wearing a pair of black trousers, a blue T-shirt, sports shoes, crossing the street, in front of the ego car. The driver should slow down because the pedestrian is crossing directly in front of the vehicle, increasing the risk of collision."}
{"id": "train_06747", "split": "train", "clip_key": "titan_clip_882_000588_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_882_000588_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_882_000588_movie_t-3_augB1.jpg", "titan_clip_882_000588_movie_t-2_augB1.jpg", "titan_clip_882_000588_movie_t-1_augB1.jpg", "titan_clip_882_000588_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian walking in road", "environment_perception": "An urban commercial street with no marked centerline and smooth but patched asphalt runs straight ahead, with light same-direction traffic and many curbside deliveries on the left narrowing the roadway. A pedestrian wearing a gray shirt is ahead, starting near the right side and walking through the middle toward the left curb, briefly occupying the vehicle's path. A white box truck stands ahead along the left curb, its rear encroaching into the lane and constraining the available space. Farther ahead, several vans and cars line the left side and a short queue in the same direction creeps forward, setting a slow pace.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and walking in the middle of the road, toward the left side. The pedestrian may step further into the vehicle's path, so the driver should be aware and prepare to slow."}
{"id": "train_06748", "split": "train", "clip_key": "titan_clip_1297_000540_movie", "source": {"subset": "titan", "scenario": "clip_1297", "frame": "000540"}, "frames": ["titan_clip_1297_000540_movie_t-3.jpg", "titan_clip_1297_000540_movie_t-2.jpg", "titan_clip_1297_000540_movie_t-1.jpg", "titan_clip_1297_000540_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban commercial street with one lane each way and no median runs past construction hoarding on the left and shops on the right; the pavement is patched and traffic is light. Ahead in the ego lane, a yellow sedan slows to turn left at the upcoming intersection, briefly constraining the ego vehicle's pace. An oncoming white van approaches in the opposite lane on the right and continues straight. On the right sidewalk by a storefront, a person holding a bicycle stands near the curb and may step toward the roadway.", "hazard_reasoning": "There is a yellow sedan slowing down in the ego lane, because it is intending to turn left at the intersection. The sedan's reduced speed may require the driver to adjust speed to maintain a safe following distance."}
{"id": "train_06749", "split": "train", "clip_key": "2020-0227-104226_076820_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "076820"}, "frames": ["2020-0227-104226_076820_movie_t-3.jpg", "2020-0227-104226_076820_movie_t-2.jpg", "2020-0227-104226_076820_movie_t-1.jpg", "2020-0227-104226_076820_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential scene unfolds on a very narrow two-way road without a centerline, smooth pavement, and light traffic as buildings and utility poles crowd the curbs. The ego vehicle follows a black minivan directly ahead in the same direction that moves slowly and briefly brakes, dictating the pace. On the right edge of the roadway, a pedestrian carrying a backpack and wearing a black jacket and black pants pushes a stroller and walks away from the ego car along the lane because there is no sidewalk, close to the travel path and likely to require extra space when passing. No oncoming vehicles appear, and roadside poles further constrict the usable width.", "hazard_reasoning": "There is a pedestrian carrying a backpack, pushing a stroller, wearing black pants, and wearing a black jacket, walking on the right side of the road away from the ego car, because there is no sidewalk. The pedestrian walking on the roadway creates a risk of collision, so the driver should slow down to maintain safety."}
{"id": "train_06750", "split": "train", "clip_key": "2020-0203-114632_059660_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "059660"}, "frames": ["2020-0203-114632_059660_movie_t-3.jpg", "2020-0203-114632_059660_movie_t-2.jpg", "2020-0203-114632_059660_movie_t-1.jpg", "2020-0203-114632_059660_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be cautious of cone on the right", "environment_perception": "A wide urban arterial with at least two lanes in each direction runs straight on smooth asphalt, the opposing sides separated by flexible posts; traffic is light. A large blue-and-white truck approaches on the right in the oncoming lanes and proceeds straight through the intersection without deviating toward the ego lane. A small work truck is stopped at the left curb ahead, narrowing the shoulder but remaining outside the lane. Pedestrians walk along the left sidewalk near the shops and do not move toward the roadway. Just beyond the junction, a single orange traffic cone stands on the right edge of the ego lane near the divider. Overhead signal heads control the junction.", "hazard_reasoning": "There is a traffic cone on the right side of the lane. This cone could indicate nearby roadwork or an obstruction, so the driver should be cautious to avoid potential conflicts."}
{"id": "train_06751", "split": "train", "clip_key": "2020-0205-103411_059948_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "059948"}, "frames": ["2020-0205-103411_059948_movie_t-3.jpg", "2020-0205-103411_059948_movie_t-2.jpg", "2020-0205-103411_059948_movie_t-1.jpg", "2020-0205-103411_059948_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "be aware of parked truck ahead", "environment_perception": "An urban multi-lane road lined with high-rises has smooth pavement, and traffic moves at a slow crawl in the same direction across the visible lanes. A box truck directly ahead in the ego lane inches forward and sets the pace. On the left, a white truck is stopped in the left lane with its rear open while it is being loaded, blocking that lane and tightening the passage. To the right, a silver van and other cars in the adjacent lane creep past and merge ahead of the truck. A worker and a safety cone are beside the loading area near the curb, and a pedestrian overpass spans the roadway.", "hazard_reasoning": "There is a white truck parked on the left side of the road, in the left lane, because it is being loaded. Drivers should be aware that the parked truck reduces visibility and may obstruct the left lane, requiring caution to avoid potential conflicts."}
{"id": "train_06752", "split": "train", "clip_key": "2020-0129-144857_017025_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "017025"}, "frames": ["2020-0129-144857_017025_movie_t-3.jpg", "2020-0129-144857_017025_movie_t-2.jpg", "2020-0129-144857_017025_movie_t-1.jpg", "2020-0129-144857_017025_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane roadway runs between tall buildings, with a right-side curb and planted strip and smooth dry pavement; traffic is heavy and slow. A black van is stopped directly ahead in the ego lane because of congestion, blocking the path. Farther ahead in the same lane, a large bus remains queued at a standstill, reinforcing the backup. In the adjacent left lane, a white box truck slightly ahead creeps forward alongside while other cars in that lane also queue, keeping speeds low across both lanes. No salient signals or signs are visible.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to prevent a rear-end collision with the stationary van."}
{"id": "train_06753", "split": "train", "clip_key": "2020-0127-132751_097598_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "097598"}, "frames": ["2020-0127-132751_097598_movie_t-3.jpg", "2020-0127-132751_097598_movie_t-2.jpg", "2020-0127-132751_097598_movie_t-1.jpg", "2020-0127-132751_097598_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In an urban setting, the ego car travels in the left lane of a multi-lane arterial with additional same-direction lanes to the right and a painted gore separating them; the pavement looks smooth and traffic is light. A silver van drives directly ahead in the ego lane at a steady speed, so the ego vehicle follows behind. On the left path behind a low hedge, two cyclists ride in the same direction while remaining off the roadway. Pedestrians on the right sidewalk move past shops and keep clear of the curb. An overhead circular sign shows a 40 speed limit.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06754", "split": "train", "clip_key": "2020-0205-103411_032166_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "032166"}, "frames": ["2020-0205-103411_032166_movie_t-3.jpg", "2020-0205-103411_032166_movie_t-2.jpg", "2020-0205-103411_032166_movie_t-1.jpg", "2020-0205-103411_032166_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with smooth pavement carries several same-direction lanes, including a red-surfaced lane on the right, and traffic is moderate with a brief queue near an intersection. Directly ahead in the ego lane, a black vehicle is stopped and constrains the ego car's movement. In the adjacent left lane, a black van waits alongside, limiting an immediate lane change. Farther ahead in the right lanes, a white bus proceeds along the corridor. A signalized intersection is visible ahead, and vehicles queue before it.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, in the ego lane, because of a yellow traffic light ahead. The driver should stop immediately to avoid a rear-end collision with the stopped SUV."}
{"id": "train_06755", "split": "train", "clip_key": "titan_clip_944_000432_movie", "source": {"subset": "titan", "scenario": "clip_944", "frame": "000432"}, "frames": ["titan_clip_944_000432_movie_t-3.jpg", "titan_clip_944_000432_movie_t-2.jpg", "titan_clip_944_000432_movie_t-1.jpg", "titan_clip_944_000432_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow street with storefronts and bollards has smooth pavement and light motor traffic, but movement is constrained by a stopped delivery truck along the left side with its rear doors open. The truck stands partly in the lane as a worker handles boxes on a dolly at the rear, narrowing the usable roadway and slowing the ego vehicle's approach. In the middle of the road ahead, a pedestrian wearing black pants and carrying a handbag walks away from the ego car, occupying the lane and further constraining the path. Farther ahead near the center-right, a cyclist rides away at a steady pace, likely determining how quickly the ego vehicle can proceed past the obstruction. Bollards and shopfront signage limit lateral clearance.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying a handbag and walking away from the ego car in the middle of the road. The driver should slow down because the pedestrian is on the roadway and may step into the vehicle's path unexpectedly."}
{"id": "train_06756", "split": "train", "clip_key": "2020-0226-140503_047446_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "047446"}, "frames": ["2020-0226-140503_047446_movie_t-3.jpg", "2020-0226-140503_047446_movie_t-2.jpg", "2020-0226-140503_047446_movie_t-1.jpg", "2020-0226-140503_047446_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a central metal fence and wet, dark pavement stretches ahead under gray skies, and traffic in the ego direction is heavy and stop-and-go. A black and white police sedan directly ahead in the ego lane starts to drive away, pulling forward as the line ahead moves and creating a small gap. A white van slightly ahead in the lane to the left creeps forward in parallel, keeping the ego car boxed in from that side. On the far right, beyond the fence, oncoming cars flow steadily in the opposite lanes without interacting. No unusual obstacles are visible.", "hazard_reasoning": "There is a black and white sedan starting to drive in the ego lane, away from the ego car, because traffic ahead is moving. You should start moving to maintain traffic flow and keep a safe following distance."}
{"id": "train_06757", "split": "train", "clip_key": "2020-0210-155354_001071_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "001071"}, "frames": ["2020-0210-155354_001071_movie_t-3.jpg", "2020-0210-155354_001071_movie_t-2.jpg", "2020-0210-155354_001071_movie_t-1.jpg", "2020-0210-155354_001071_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban shopping street is shown with a multi-lane two-way carriageway, no physical median, smooth pavement, and moderate traffic flow. A white SUV ahead in the ego lane moves away from the ego car while edging right to pass a parked vehicle along the left curb, briefly setting the pace. A black sedan travels toward the camera in the right-side oncoming lane and continues straight within its lane. Pedestrians crowd both sidewalks behind railings and walk along storefronts, with some waiting near the curb but none stepping into the road. A parked white van on the left forms the roadside obstruction.", "hazard_reasoning": "There is a white SUV maneuvering in the ego lane, away from the ego car, because of a parked vehicle on the left. Follow the vehicle ahead to maintain safe spacing and avoid sudden braking."}
{"id": "train_06758", "split": "train", "clip_key": "2020-0226-140503_021084_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "021084"}, "frames": ["2020-0226-140503_021084_movie_t-3.jpg", "2020-0226-140503_021084_movie_t-2.jpg", "2020-0226-140503_021084_movie_t-1.jpg", "2020-0226-140503_021084_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrians waiting to cross", "environment_perception": "An urban two-way road with a single lane per direction runs toward an uphill intersection, the lanes split by a solid yellow centerline; the red-surfaced pavement appears smooth and traffic is light. An oncoming small truck enters the intersection ahead and proceeds straight toward and past the ego in its lane. A white van follows it in the oncoming lane, continuing straight through. Two pedestrians wearing black wait at the left curb by the crosswalk and may step into the ego lane when permitted. A roadside sign on the left posts 40, accompanied by a no-stopping sign.", "hazard_reasoning": "There are two pedestrians wearing black and waiting to cross at the left side of the road. Since they may enter the roadway without warning, you should be aware to prevent a collision."}
{"id": "train_06759", "split": "train", "clip_key": "titan_clip_584_000018_movie", "source": {"subset": "titan", "scenario": "clip_584", "frame": "000018"}, "frames": ["titan_clip_584_000018_movie_t-3.jpg", "titan_clip_584_000018_movie_t-2.jpg", "titan_clip_584_000018_movie_t-1.jpg", "titan_clip_584_000018_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with a single narrow lane in each direction and no median runs between low- to mid-rise buildings; the pavement is smooth and traffic is light. Parked vehicles line the right curb, locally constricting the ego lane as the view advances. A silver kei van stands at the right curb ahead, protruding slightly into the ego lane and reducing the available width. A black car is stopped just beyond it at the curb, also stationary and further narrowing the corridor. A small oncoming car approaches farther ahead in its lane, continuing straight and relevant because the narrowed space limits passing clearance. Blue no-stopping signs are posted on roadside poles.", "hazard_reasoning": "No hazards are present in the scene; the road is clear and no risky elements are detected, so the driver can continue driving normally."}
{"id": "train_06760", "split": "train", "clip_key": "2020-0204-150838_050063_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "050063"}, "frames": ["2020-0204-150838_050063_movie_t-3.jpg", "2020-0204-150838_050063_movie_t-2.jpg", "2020-0204-150838_050063_movie_t-1.jpg", "2020-0204-150838_050063_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided roadway with three same-direction lanes runs under an elevated expressway, the asphalt smooth and dry as the road bends gently left; traffic is light and moves freely. A white van ahead in the ego lane maintains a steady pace through the bend and effectively sets the ego vehicle's speed. Farther ahead, a small box truck continues in the same direction without affecting the ego path. There is no oncoming traffic because of the barrier separation. Lane arrows show the rightmost lane serves an upcoming exit while the center lanes continue straight.", "hazard_reasoning": "There are no hazards detected in this scenario, so no warning is necessary."}
{"id": "train_06761", "split": "train", "clip_key": "titan_clip_1243_000336_movie", "source": {"subset": "titan", "scenario": "clip_1243", "frame": "000336"}, "frames": ["titan_clip_1243_000336_movie_t-3.jpg", "titan_clip_1243_000336_movie_t-2.jpg", "titan_clip_1243_000336_movie_t-1.jpg", "titan_clip_1243_000336_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian.", "environment_perception": "A narrow urban residential two-way street with no centerline and smooth pavement is shown, with light, slow traffic. A zebra crosswalk spans the approach as the road narrows and bends slightly right, and no oncoming vehicles appear. Along the left edge ahead, a pedestrian wearing a black shirt and carrying a handbag walks toward the ego vehicle in the lane because there is no sidewalk, occupying part of the ego lane and constraining the approach. Near the crosswalk at the left curb, a small van is stopped and further tightens the available space. On the right, another pedestrian moves along the hedge at the curb without entering the lane. A circular speed-limit sign stands on the left, and tall hedges limit sight through the bend.", "hazard_reasoning": "There is a pedestrian wearing a handbag and a black shirt, walking along the left side of the lane, toward the ego car, because there is no sidewalk. The pedestrian may unexpectedly step into the road due to the lack of a sidewalk, posing a collision risk if not anticipated."}
{"id": "train_06762", "split": "train", "clip_key": "2020-0204-150838_073287_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "073287"}, "frames": ["2020-0204-150838_073287_movie_t-3.jpg", "2020-0204-150838_073287_movie_t-2.jpg", "2020-0204-150838_073287_movie_t-1.jpg", "2020-0204-150838_073287_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with two same-direction lanes runs between concrete side walls; the asphalt is dry and smooth, and traffic is light. The road gently climbs toward a crest. Ahead in the ego lane, a black truck continues straight and slowly pulls away, driving away from the ego car and briefly limiting the view over the rise. No other nearby vehicles interact with the ego vehicle, and no salient traffic signs or signals are visible; the scene appears free of obstacles.", "hazard_reasoning": "There is a black truck driving away from the ego car in the ego lane. The driver should be aware of the truck ahead to anticipate any future speed adjustments."}
{"id": "train_06763", "split": "train", "clip_key": "2020-0205-152530_010958_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "010958"}, "frames": ["2020-0205-152530_010958_movie_t-3.jpg", "2020-0205-152530_010958_movie_t-2.jpg", "2020-0205-152530_010958_movie_t-1.jpg", "2020-0205-152530_010958_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two through lanes in the ego direction and a bollard-separated frontage lane on the right has dry, smooth pavement and light, flowing traffic. A white van ahead in the ego lane pulls away steadily, guiding the ego car's pace. A dark car directly ahead of the ego follows the van at a short gap, continuing straight and keeping the lane occupied. A white kei car in the left lane runs slightly ahead near the guardrail at similar speed, limiting leftward lane changes. A white box truck in the right separated lane moves slowly near the bollards and remains segregated from the through lanes. Strong low sun produces glare down the road.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. The van ahead could slow down unexpectedly, so the driver should maintain a safe distance by following the vehicle ahead."}
{"id": "train_06764", "split": "train", "clip_key": "titan_clip_1285_000240_movie", "source": {"subset": "titan", "scenario": "clip_1285", "frame": "000240"}, "frames": ["titan_clip_1285_000240_movie_t-3.jpg", "titan_clip_1285_000240_movie_t-2.jpg", "titan_clip_1285_000240_movie_t-1.jpg", "titan_clip_1285_000240_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow two-lane urban residential street with no median and dry, slightly worn pavement; traffic is light with no oncoming vehicles during the clip. The ego car proceeds in the left lane along a straight segment. A white box truck ahead in the ego lane drives straight as the road ahead stays clear, setting the ego vehicle's pace. A pedestrian on the left, behind the roadside railing, walks in the same direction parallel to the curb and does not approach the lane. Parked cars along the right edge remain stationary and slightly narrow the passage; no signals or signs are prominent.", "hazard_reasoning": "There is a white truck driving in the ego lane, in front of the ego car, because the road ahead is clear. The truck blocks the driver's view of potential hazards ahead, so the driver should follow it to maintain safe visibility and guidance."}
{"id": "train_06765", "split": "train", "clip_key": "2020-0203-114632_013097_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "013097"}, "frames": ["2020-0203-114632_013097_movie_t-3.jpg", "2020-0203-114632_013097_movie_t-2.jpg", "2020-0203-114632_013097_movie_t-1.jpg", "2020-0203-114632_013097_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrians in crosswalk", "environment_perception": "An urban two-way road with one lane per direction runs straight between mid-rise buildings, with no median and smooth pavement; traffic is light. At the zebra crossing directly ahead, three pedestrians wearing dark clothing cross from right to left across the ego vehicle's left lane, so the car slows to yield. An oncoming white van proceeds in its own lane beyond the crosswalk without affecting the ego path. Several pedestrians wait on the left sidewalk by the railings near the crossing and could enter after the current group. A 30 speed limit sign and pedestrian signals are visible at the junction.", "hazard_reasoning": "There are three pedestrians wearing black shirts and crossing the crosswalk from right to left. The driver should yield because they are entering the path of the vehicle and to ensure pedestrian safety."}
{"id": "train_06766", "split": "train", "clip_key": "2020-0207-151349_019298_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "019298"}, "frames": ["2020-0207-151349_019298_movie_t-3.jpg", "2020-0207-151349_019298_movie_t-2.jpg", "2020-0207-151349_019298_movie_t-1.jpg", "2020-0207-151349_019298_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop to maintain safe following distance", "environment_perception": "An urban three-lane arterial runs between commercial buildings with metal railings and a separated sidewalk; the pavement is dry and traffic is slow in congestion. Directly ahead in the ego lane, a gray box truck slows and inches forward with the queue, constraining the ego vehicle's pace. In the right lane, a black SUV slightly ahead creeps forward at a similar speed while maintaining its lane. In the left lane, a white van just ahead moves with the jam and stays roughly beside the ego car. A cyclist proceeds along the left sidewalk behind the barrier, separated from traffic, and strong sun glare from the upper left reduces visibility.", "hazard_reasoning": "There's a gray truck slowing down, in front of the ego car, in the ego lane, due to traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision in the slowing traffic."}
{"id": "train_06767", "split": "train", "clip_key": "titan_clip_1186_000096_movie", "source": {"subset": "titan", "scenario": "clip_1186", "frame": "000096"}, "frames": ["titan_clip_1186_000096_movie_t-3.jpg", "titan_clip_1186_000096_movie_t-2.jpg", "titan_clip_1186_000096_movie_t-1.jpg", "titan_clip_1186_000096_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck.", "environment_perception": "An urban street with two same-direction lanes and a double center line runs between mid-rise buildings; the dry pavement is in good condition and traffic is light to moderate, slowing near stopped vehicles. On the left curb ahead, a gray truck is parked in the ego lane, narrowing the passage and requiring traffic to pass on the right. Ahead in the adjacent right lane, a small flatbed truck covered by a green tarp waits near the parked truck, limiting the gap for a merge. Two pedestrians are by the left railing next to the parked truck, one standing near its rear and another walking along the sidewalk close to the curb, near the ego path.", "hazard_reasoning": "There is a gray truck parked on the left side of the road, in the ego lane. The parked truck encroaches into the driving lane and reduces visibility of pedestrians, so the driver should carefully manoeuvre around the parked truck to maintain safety."}
{"id": "train_06768", "split": "train", "clip_key": "titan_clip_139_000492_movie", "source": {"subset": "titan", "scenario": "clip_139", "frame": "000492"}, "frames": ["titan_clip_139_000492_movie_t-3.jpg", "titan_clip_139_000492_movie_t-2.jpg", "titan_clip_139_000492_movie_t-1.jpg", "titan_clip_139_000492_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one narrow lane each direction has no median, worn pavement, and a small puddle by the right curb; traffic is light with a vehicle far ahead moving away. A pedestrian in a light coat is ahead near the left edge, crossing toward the right at the zebra crossing and may pass through the ego lane. On the right side, a pedestrian wearing a blue T-shirt and gray pants walks away from the ego car along the road edge. Several construction workers operate within a coned-off work zone at the right curb, with one standing close to the lane and others crouching just inside the barrier. The zebra crossing and orange safety cones are clearly visible, and parked bicycles line the left sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt and gray pants, walking on the right side of the road, away from the ego car. The pedestrian is close to the driving lane and may step into traffic unexpectedly, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_06769", "split": "train", "clip_key": "2020-0207-151349_022009_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "022009"}, "frames": ["2020-0207-151349_022009_movie_t-3.jpg", "2020-0207-151349_022009_movie_t-2.jpg", "2020-0207-151349_022009_movie_t-1.jpg", "2020-0207-151349_022009_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with at least three same-direction lanes and a right-side guardrail is visible; the pavement is smooth and traffic is slow, with vehicles queuing under strong sun glare. A white box truck is directly ahead in the ego lane and remains stopped, blocking the path and determining the ego vehicle's pace. A small covered truck travels slightly ahead to the right in the adjacent lane, moving forward parallel to the ego vehicle without merging. A white SUV runs alongside in the far-right lane, overtaking the queue while remaining separate from the ego lane. Overhead Japanese guide signs are visible, and pedestrians walk on the elevated sidewalk to the right behind the barrier.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The stopped truck ahead poses a collision risk, so the driver should stop immediately to avoid impact."}
{"id": "train_06770", "split": "train", "clip_key": "titan_clip_442_000366_movie", "source": {"subset": "titan", "scenario": "clip_442", "frame": "000366"}, "frames": ["titan_clip_442_000366_movie_t-3.jpg", "titan_clip_442_000366_movie_t-2.jpg", "titan_clip_442_000366_movie_t-1.jpg", "titan_clip_442_000366_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban side street with brick-patterned pavement forms a very narrow two-way road without a centerline, and traffic remains light while the surface looks clean and intact. A pedestrian in a blue shirt and black pants walks away from the ego vehicle along the right edge because a flatbed truck is parked there, keeping close to the side. The flatbed truck is stopped on the right ahead and partly intrudes into the travel lane, narrowing the passage for the ego vehicle. Farther ahead, another pedestrian continues walking away in the same direction near the center of the street.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants walking on the right side of the road because of the parked vehicle. This pedestrian may step into the lane unexpectedly to avoid the truck, so the driver should slow down to maintain control and be prepared to stop."}
{"id": "train_06771", "split": "train", "clip_key": "2020-0225-102455_007623_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_007623_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_007623_movie_t-3_augB1.jpg", "2020-0225-102455_007623_movie_t-2_augB1.jpg", "2020-0225-102455_007623_movie_t-1_augB1.jpg", "2020-0225-102455_007623_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial rises gently with two lanes in the ego direction and opposing lanes to the right, separated by a painted chevron median; the pavement is dry and traffic is moderate with a brief buildup ahead. A gray dump truck is ahead in the ego lane and slows, constrained by a queue of same-direction cars farther up the grade due to congestion. A line of passenger cars continues straight in the ego lanes, intermittently braking and setting the pace. Oncoming traffic to the right flows downhill steadily beyond the chevron island without interacting. Overhead blue guide signs assign lanes and list destinations, including left for Hanzomon, straight for Sendagaya, and right toward Hatsudai and Shinjuku Station.", "hazard_reasoning": "There is a gray truck is slowing in the ego lane, away from the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of the truck due to the buildup of traffic."}
{"id": "train_06772", "split": "train", "clip_key": "titan_clip_439_000048_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_439_000048_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_439_000048_movie_t-3_augB1.jpg", "titan_clip_439_000048_movie_t-2_augB1.jpg", "titan_clip_439_000048_movie_t-1_augB1.jpg", "titan_clip_439_000048_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow shared lane and block-paved surface runs between storefronts, with no divider and light vehicle flow; space is constrained by a parked silver car along the left edge. Ahead in the center of the roadway, a pedestrian in a gray shirt and black pants walks away from the ego vehicle and angles toward the right side, briefly occupying the ego path. At the right edge near a restaurant entrance, another pedestrian waits by the sidewalk and may step into the lane as the car approaches. Far ahead, an oncoming white van advances toward the camera along the opposing direction on the same narrow lane, limiting room for passing.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black pants, walking in the middle of the road toward the right side, away from the ego car. The driver should slow down to allow the pedestrian to clear the roadway safely."}
{"id": "train_06773", "split": "train", "clip_key": "2020-0226-140503_082699_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "082699"}, "frames": ["2020-0226-140503_082699_movie_t-3.jpg", "2020-0226-140503_082699_movie_t-2.jpg", "2020-0226-140503_082699_movie_t-1.jpg", "2020-0226-140503_082699_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth asphalt and painted lane divisions carries heavy, slow traffic, and all visible lanes run in the same direction. The ego vehicle queues in its lane as a white hatchback directly ahead is stopped because of congestion, holding the ego's pace. To the left, a white minivan slightly ahead crawls in the adjacent lane, running alongside the queue and limiting room to shift left. On the right, a silver sedan advances gradually in its lane without encroaching on the ego lane. Farther ahead, a long line of vehicles stretches toward the next intersection, compressing flow. Overhead signals in the distance show green for through movement, yet the queue persists.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The halted vehicle signals slowing traffic, so the driver should prepare to stop to avoid a collision under congested conditions."}
{"id": "train_06774", "split": "train", "clip_key": "titan_clip_373_000444_movie", "source": {"subset": "titan", "scenario": "clip_373", "frame": "000444"}, "frames": ["titan_clip_373_000444_movie_t-3.jpg", "titan_clip_373_000444_movie_t-2.jpg", "titan_clip_373_000444_movie_t-1.jpg", "titan_clip_373_000444_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van.", "environment_perception": "An urban two-way street with a single lane each way and a solid centerline runs past shops and trees; the pavement is smooth and traffic is light to moderate with steady movement. On the left curb ahead, a silver van is parked while its driver gets into the vehicle, so it may pull out into the ego lane. Ahead in the ego lane, a dark car moves forward at a modest pace, loosely setting the speed. In the opposite lane to the right, a white minivan and another car approach, continuing straight as oncoming traffic. Bicycles line both sides behind railings.", "hazard_reasoning": "There is a silver van parked on the left side of the road, because the driver is entering the vehicle. The parked van may suddenly pull out or obstruct your path, so you should carefully manoeuvre to avoid collision."}
{"id": "train_06775", "split": "train", "clip_key": "2020-0227-153144_033816_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "033816"}, "frames": ["2020-0227-153144_033816_movie_t-3.jpg", "2020-0227-153144_033816_movie_t-2.jpg", "2020-0227-153144_033816_movie_t-1.jpg", "2020-0227-153144_033816_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for red light ahead", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and clear painted markings has dry, smooth pavement and heavy traffic queued at a signalized intersection. Directly ahead in the ego lane, a white van is stopped because the light is red, holding the ego vehicle. Ahead to the left, a black minivan waits in the adjacent lane and creeps slightly forward in parallel without encroaching. To the right front, another white van in the neighboring lane slows to a stop alongside, limiting room to merge. The overhead traffic signals show red.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of a red light ahead. The white van is stopped at the red light ahead, so you must stop to maintain a safe distance and obey the traffic signal."}
{"id": "train_06776", "split": "train", "clip_key": "2020-0217-144444_005093_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "005093"}, "frames": ["2020-0217-144444_005093_movie_t-3.jpg", "2020-0217-144444_005093_movie_t-2.jpg", "2020-0217-144444_005093_movie_t-1.jpg", "2020-0217-144444_005093_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and a left-side guardrail carries heavy, stop-and-go traffic. Ahead in the ego lane, a green sedan is stopped for a red signal and holds the ego vehicle. In the adjacent right lane, a black minivan slightly ahead inches forward without merging. Farther ahead to the right, a small truck creeps with the queue, constrained by congestion.", "hazard_reasoning": "There is a green sedan stopped in the ego lane, because of a red light ahead. The driver must stop to avoid colliding with the stationary sedan at the red light."}
{"id": "train_06777", "split": "train", "clip_key": "2020-0131-135401_073821_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "073821"}, "frames": ["2020-0131-135401_073821_movie_t-3.jpg", "2020-0131-135401_073821_movie_t-2.jpg", "2020-0131-135401_073821_movie_t-1.jpg", "2020-0131-135401_073821_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth asphalt runs between tall buildings, and traffic is heavy and mostly stopped. A black hatchback is stopped directly ahead in the ego lane because congestion blocks the way, holding the ego car in place. To the left, a tall white box truck stands still in the adjacent lane, restricting forward visibility. On the right, a silver van in the neighboring lane inches ahead alongside and may occupy any opening ahead. Farther up the queue, a blue cargo truck waits among tightly packed vehicles. An overhead sign displays lane-direction arrows for through and turning movements at the upcoming intersection.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. You must stop to maintain a safe distance and avoid rear-end collisions."}
{"id": "train_06778", "split": "train", "clip_key": "2020-0228-150133_003874_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "003874"}, "frames": ["2020-0228-150133_003874_movie_t-3.jpg", "2020-0228-150133_003874_movie_t-2.jpg", "2020-0228-150133_003874_movie_t-1.jpg", "2020-0228-150133_003874_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down and maintain distance", "environment_perception": "An urban two-way street with one lane each way and no median runs between buildings; the pavement looks damp under glare and traffic is moderate, with a large 40 speed marking visible in the ego lane. Ahead in the ego lane, a black van slows because a white box truck cuts in ahead of it, which constrains the ego vehicle's pace. Immediately in front of the van, the white box truck merges left into the ego lane and settles at a lower speed. In the opposite lane to the right, an oncoming scooter travels toward the camera near the curb while remaining in its lane.", "hazard_reasoning": "There's a black van slowing in front of the ego car, in the ego lane, because of truck cutting in ahead of the van. Slow down to maintain a safe gap and accommodate the truck's lane change."}
{"id": "train_06779", "split": "train", "clip_key": "2020-0228-150133_012682_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "012682"}, "frames": ["2020-0228-150133_012682_movie_t-3.jpg", "2020-0228-150133_012682_movie_t-2.jpg", "2020-0228-150133_012682_movie_t-1.jpg", "2020-0228-150133_012682_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked vehicle", "environment_perception": "An urban residential street in Japan, narrow two-way with no median and worn asphalt, runs gently uphill; traffic is light with no moving vehicles visible. On the left curb close to the ego vehicle, a white flatbed truck is parked, reducing usable width and pushing the ego path right to pass. Farther ahead along the same curb, a green sedan is parked on the left side of the road, further narrowing the lane. The opposing lane to the right remains clear of oncoming traffic at this moment. A blue pedestrian overpass and roadside railings line the right, with no pedestrians or cyclists in view.", "hazard_reasoning": "There is a green sedan parked on the left side of the road. The driver should be aware of this parked vehicle as it may require adjusting speed or lane position when passing."}
{"id": "train_06780", "split": "train", "clip_key": "2020-0205-103411_113497_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "113497"}, "frames": ["2020-0205-103411_113497_movie_t-3.jpg", "2020-0205-103411_113497_movie_t-2.jpg", "2020-0205-103411_113497_movie_t-1.jpg", "2020-0205-103411_113497_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial with no physical median and dry, smooth pavement leads to a signalized intersection, and overall traffic moves at a light to moderate pace. A white van ahead in the ego lane drives away from the ego vehicle, continuing straight and loosely setting the pace. Two white vans approach in the oncoming right-side lanes, traveling straight through the junction and remaining separated by the centerline. A person on the right sidewalk walks past storefronts near the crosswalk but does not enter the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06781", "split": "train", "clip_key": "titan_clip_1019_000270_movie", "source": {"subset": "titan", "scenario": "clip_1019", "frame": "000270"}, "frames": ["titan_clip_1019_000270_movie_t-3.jpg", "titan_clip_1019_000270_movie_t-2.jpg", "titan_clip_1019_000270_movie_t-1.jpg", "titan_clip_1019_000270_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Be aware of the cyclist ahead", "environment_perception": "A narrow urban commercial street with two-way traffic and smooth pavement is shown, with the ego vehicle proceeding in the left lane amid light flow. Two men ahead on the left edge walk toward the camera partly in the lane, potentially encroaching on the ego path. Farther ahead, several pedestrians move along the storefronts on the left, walking away while staying near the curb. An oncoming small truck approaches in the right lane at a distance and continues straight without affecting the ego vehicle. No cyclist is visible in the lanes.", "hazard_reasoning": "There is a cyclist on a black bicycle in the cycling lane heading. The cyclist is near the vehicle's path and may move unpredictably, so the driver should be aware of their presence."}
{"id": "train_06782", "split": "train", "clip_key": "titan_clip_887_000510_movie", "source": {"subset": "titan", "scenario": "clip_887", "frame": "000510"}, "frames": ["titan_clip_887_000510_movie_t-3.jpg", "titan_clip_887_000510_movie_t-2.jpg", "titan_clip_887_000510_movie_t-1.jpg", "titan_clip_887_000510_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of merging sedan", "environment_perception": "An urban commercial street with two same-direction lanes and no median stretches ahead, the pavement dry and smooth with light to moderate flow. The right curb lane is partially blocked by cones and covered work trucks, narrowing usable space. A black sedan ahead merges into the ego lane from the left side of the road and settles in the path, potentially slowing the ego vehicle. Farther ahead, a small white truck in the same lane reduces speed while threading past the work area, further constraining traffic. Parked vehicles line both curbs, including a dark minivan on the left, but they remain stationary and out of the travel lanes.", "hazard_reasoning": "There is a black sedan merging into the ego lane from the left side of the road. The merging vehicle may enter the ego-vehicle's path unexpectedly, requiring you to adjust speed or position to avoid conflict. Remain vigilant as the sedan could continue merging into your lane without sufficient clearance, so be cautious of the merging sedan."}
{"id": "train_06783", "split": "train", "clip_key": "2020-0129-105040_068760_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "068760"}, "frames": ["2020-0129-105040_068760_movie_t-3.jpg", "2020-0129-105040_068760_movie_t-2.jpg", "2020-0129-105040_068760_movie_t-1.jpg", "2020-0129-105040_068760_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cyclist", "environment_perception": "A narrow urban residential street runs straight with one lane in each direction, no median, and white guardrails along both sides; the pavement is dry and smooth and traffic is light with no oncoming vehicles. A cyclist rides ahead in the ego lane, moving away near the center of the roadway and occupying the lane because there is no bicycle lane, so the rider may constrain the ego vehicle's pace. A small vehicle is parked on the right side mid-block, slightly narrowing the usable space.", "hazard_reasoning": "There is a cyclist in the same lane as the ego car, cycling away from the ego car, because there is no bicycle lane. The driver should carefully manoeuvre around the cyclist to avoid a potential collision due to the lack of a dedicated bike lane."}
{"id": "train_06784", "split": "train", "clip_key": "titan_clip_1190_000342_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1190_000342_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1190_000342_movie_t-3_augB1.jpg", "titan_clip_1190_000342_movie_t-2_augB1.jpg", "titan_clip_1190_000342_movie_t-1_augB1.jpg", "titan_clip_1190_000342_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around her", "environment_perception": "A narrow urban back street with a single shared lane and no centerline runs between shopfronts, the pavement dry and patchy, and traffic is light with no nearby vehicles. Ahead in the ego lane, a woman carrying a handbag moves from the right side toward the left across the middle of the road, walking away from the ego car as restaurant signs and menu boards crowd the right sidewalk. Farther ahead near the center, another pedestrian continues straight in the same direction without affecting the ego path. A small vehicle is visible in the distance along the same route, proceeding slowly. Freestanding signboards and utility poles squeeze the corridor but do not block the lane.", "hazard_reasoning": "There is a woman carrying a handbag, wearing a black-and-green dress, and crossing the middle of the road from the right side to the left side, away from the ego-car because of restaurant signs on the right side. The driver should carefully manoeuvre around her since she is crossing unexpectedly in a narrow street."}
{"id": "train_06785", "split": "train", "clip_key": "2020-0227-153144_034559_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "034559"}, "frames": ["2020-0227-153144_034559_movie_t-3.jpg", "2020-0227-153144_034559_movie_t-2.jpg", "2020-0227-153144_034559_movie_t-1.jpg", "2020-0227-153144_034559_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with a raised median and smooth pavement carries heavy, slow traffic in the same direction while oncoming lanes run beyond the median to the right. A white kei van directly ahead in the ego lane is stopped because of congestion ahead, blocking the lane. To the left, a white station wagon alongside creeps forward in the adjacent lane, limiting any move left. On the right, a small covered truck just ahead travels slowly in the next lane after merging from a side area, close to the ego vehicle's path if lanes shift. A roadside sign on the right prohibits right turns.", "hazard_reasoning": "There is a white van stopped in the ego lane because of the traffic congestion ahead on the road. The driver should stop to avoid a collision with the halted van and adapt to the slow-moving traffic."}
{"id": "train_06786", "split": "train", "clip_key": "titan_clip_1350_000456_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1350_000456_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1350_000456_movie_t-3_augB1.jpg", "titan_clip_1350_000456_movie_t-2_augB1.jpg", "titan_clip_1350_000456_movie_t-1_augB1.jpg", "titan_clip_1350_000456_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "An urban alley-like street with storefronts lines both sides; the narrow two-way road lacks a center line, the pavement is dry, and traffic is light. A pedestrian wearing a black shirt and carrying a backpack stands directly ahead near the left side of the lane in front of the ego car, occupying part of the path. On the right edge, another pedestrian walks along the building frontage toward the curb and approaches the roadway, which may bring them into the lane. Far ahead, a small delivery vehicle continues away in the same direction along the middle of the street. Numerous signboards and poles sit close to the curbs, tightening the available space.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a backpack, standing in front of the ego car. This pedestrian is directly ahead and may step into the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_06787", "split": "train", "clip_key": "titan_clip_1086_000072_movie", "source": {"subset": "titan", "scenario": "clip_1086", "frame": "000072"}, "frames": ["titan_clip_1086_000072_movie_t-3.jpg", "titan_clip_1086_000072_movie_t-2.jpg", "titan_clip_1086_000072_movie_t-1.jpg", "titan_clip_1086_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban backstreet with buildings tight to the curb comes into view as the ego vehicle proceeds along a narrow undivided local road with no centerline, slightly worn pavement, and very light traffic. Ahead on the right edge, a pedestrian carrying an umbrella and a handbag walks away from the car along the roadway near the curb, occupying the margin of the ego lane and likely influencing the vehicle's passing pace. No other moving road users are visible. A pair of orange cones and a utility pole stand close to the right edge, further narrowing the roadside space.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and a handbag who is walking on the right side of the road, away from the ego car. The pedestrian is in the vehicle's potential path, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_06788", "split": "train", "clip_key": "2020-0131-103016_085755_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "085755"}, "frames": ["2020-0131-103016_085755_movie_t-3.jpg", "2020-0131-103016_085755_movie_t-2.jpg", "2020-0131-103016_085755_movie_t-1.jpg", "2020-0131-103016_085755_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the same direction runs straight between mid-rise buildings, with a guardrail and drainage channel on the right and a curb on the left; the dry pavement is smooth and traffic moves at a moderate, steady pace. A white van drives in the right lane away from the ego car, continuing straight without affecting the ego lane. A small white kei car travels ahead in the left lane at similar speed, determining the ego vehicle's following distance. Farther ahead in the right lane, a gray car cruises behind the van with no lane changes. On the left sidewalk, a cyclist pedals along behind a rail near a bus stop, remaining outside the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06789", "split": "train", "clip_key": "titan_clip_702_000018_movie", "source": {"subset": "titan", "scenario": "clip_702", "frame": "000018"}, "frames": ["titan_clip_702_000018_movie_t-3.jpg", "titan_clip_702_000018_movie_t-2.jpg", "titan_clip_702_000018_movie_t-1.jpg", "titan_clip_702_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban side street with a single narrow lane and no centerline is shown; the asphalt is smooth and traffic is light with no moving vehicles. A white truck is parked along the left curb, jutting into the lane. Ahead in the center of the roadway, a pedestrian wearing a cap and white shirt with a backpack walks away from the ego vehicle in the middle of the road because the parked truck blocks the left side, staying within the ego path. On the right edge near the camera, another pedestrian with a rolling bag moves along the curb and briefly encroaches into the lane close to the ego vehicle. Farther ahead, a person proceeds slowly with a small handcart in the lane.", "hazard_reasoning": "There is a pedestrian carrying a backpack, wearing a cap and a white shirt, and walking in the middle of the road, away from the ego car, because of the parked vehicle on their left. The driver should slow down to avoid collision with the pedestrian entering the roadway."}
{"id": "train_06790", "split": "train", "clip_key": "titan_clip_90_000162_movie", "source": {"subset": "titan", "scenario": "clip_90", "frame": "000162"}, "frames": ["titan_clip_90_000162_movie_t-3.jpg", "titan_clip_90_000162_movie_t-2.jpg", "titan_clip_90_000162_movie_t-1.jpg", "titan_clip_90_000162_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "be cautious of the cone ahead", "environment_perception": "A dense urban shopping street with an undivided roadway and smooth pavement runs between tall buildings, and traffic is light. A black minivan ahead slightly to the right slows near the curb at a zebra crossing, setting the pace for the ego vehicle. A pedestrian in dark clothing crosses the crosswalk ahead from right to left in front of the minivan and across the ego path. Another man waits at the right curb beside the crosswalk, facing the roadway. A traffic cone is placed on the left side of the road near the crosswalk, marking the edge of the roadway.", "hazard_reasoning": "A traffic cone is on the left side of the road. This obstacle could affect the vehicle's path, so the driver should be cautious to maintain control."}
{"id": "train_06791", "split": "train", "clip_key": "titan_clip_182_000036_movie", "source": {"subset": "titan", "scenario": "clip_182", "frame": "000036"}, "frames": ["titan_clip_182_000036_movie_t-3.jpg", "titan_clip_182_000036_movie_t-2.jpg", "titan_clip_182_000036_movie_t-1.jpg", "titan_clip_182_000036_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban alley with a single narrow two-way lane and no median has smooth pavement and light traffic. Ahead in the middle of the lane, a pedestrian in a white T-shirt and black pants walks toward the ego vehicle, occupying the path and constraining its approach. To the right, a dark car waits nose-out at a parking-garage exit, poised to join the lane and potentially cross the ego path. At the left edge near a storefront, a white van stands close to the curb, narrowing the available space.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and black pants, and walking in the middle of the road, towards the ego car. Because the pedestrian is in the vehicle's path and may continue walking forward, the driver should slow down to avoid a potential collision."}
{"id": "train_06792", "split": "train", "clip_key": "2020-0225-102455_019846_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "019846"}, "frames": ["2020-0225-102455_019846_movie_t-3.jpg", "2020-0225-102455_019846_movie_t-2.jpg", "2020-0225-102455_019846_movie_t-1.jpg", "2020-0225-102455_019846_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to merging vehicle.", "environment_perception": "An urban multi-lane two-way arterial with no physical median and smooth pavement approaches a large signalized intersection, and traffic is moderate. Ahead in the ego lane, a dark SUV continues through the junction at a steady pace, effectively setting the ego vehicle's speed. To the right of the ego path, a blue sedan drives through the intersection and merges into the right lane alongside the ego car, becoming adjacent and influencing lane spacing. In the oncoming direction, a white minivan approaches from the right side of the intersection and proceeds straight across in its own lanes, remaining separated from the ego by the center lines.", "hazard_reasoning": "A blue sedan is driving through the intersection, heading into the right lane next to the ego car. This vehicle is merging into your lane and could cut off your path, requiring you to yield."}
{"id": "train_06793", "split": "train", "clip_key": "2020-0206-101736_028112_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "028112"}, "frames": ["2020-0206-101736_028112_movie_t-3.jpg", "2020-0206-101736_028112_movie_t-2.jpg", "2020-0206-101736_028112_movie_t-1.jpg", "2020-0206-101736_028112_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield to merging vehicle", "environment_perception": "An urban arterial with two lanes in the ego direction and no physical median shows clean pavement and slow, queuing traffic. A white SUV sits front-left, partly over the lane line, stopped while cutting into the ego lane from the left because of congestion ahead. A white sedan directly ahead in the ego lane creeps and pauses, constraining the ego vehicle's pace. More cars queue farther ahead in both same-direction lanes, moving gradually toward the next block. No salient signals are visible, and no pedestrians or obstacles enter the roadway.", "hazard_reasoning": "There is a white SUV stopped while cutting in to the ego lane, from the left lane, because of traffic congestion ahead. The unexpected merge of the stopped vehicle into your lane increases collision risk and requires yielding to maintain safety."}
{"id": "train_06794", "split": "train", "clip_key": "2020-0131-135401_009450_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "009450"}, "frames": ["2020-0131-135401_009450_movie_t-3.jpg", "2020-0131-135401_009450_movie_t-2.jpg", "2020-0131-135401_009450_movie_t-1.jpg", "2020-0131-135401_009450_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the truck", "environment_perception": "An urban two-way street with one narrow lane in each direction runs between close buildings, divided by a solid orange centerline on smooth pavement; traffic is light and slow near a signalized intersection. A large white box truck directly ahead in the ego lane is stopped at a red light, blocking the lane and holding the ego car. An oncoming white car waits near the junction to the right of the truck's nose, remaining in its lane without encroaching. A pedestrian on the left sidewalk walks forward along the curb, parallel to traffic.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of a red traffic light. The truck indicates a red signal ahead and blocks the lane, requiring the driver to stop to avoid a collision and comply with traffic control."}
{"id": "train_06795", "split": "train", "clip_key": "2020-0225-145150_033016_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "033016"}, "frames": ["2020-0225-145150_033016_movie_t-3.jpg", "2020-0225-145150_033016_movie_t-2.jpg", "2020-0225-145150_033016_movie_t-1.jpg", "2020-0225-145150_033016_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for the red traffic light", "environment_perception": "An urban multi-lane road with smooth pavement and a wide painted gore on the right carries heavy, slow traffic beneath a pedestrian overpass. In the ego lane a blue truck directly ahead is stopped, queuing at a red traffic light further up and holding the ego car. To the left lane, a green canvas-covered mini truck slightly ahead creeps forward, limiting any chance to change lanes. Farther along the left lanes, a line of white vans idles and inches forward in the same direction, maintaining the queue alongside the ego lane. No oncoming lanes are visible and no other hazards appear.", "hazard_reasoning": "There is a blue truck stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to avoid colliding with the halted truck."}
{"id": "train_06796", "split": "train", "clip_key": "2020-0220-102630_095290_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "095290"}, "frames": ["2020-0220-102630_095290_movie_t-3.jpg", "2020-0220-102630_095290_movie_t-2.jpg", "2020-0220-102630_095290_movie_t-1.jpg", "2020-0220-102630_095290_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction is divided from oncoming lanes by a metal guardrail and a hatched buffer; the asphalt appears smooth and traffic is moderate and steady. A yellow hatchback ahead in the ego lane drives away from the ego car, gradually widening the gap and informally setting the pace. On the far right beyond the median, a white box truck followed by a dark van approaches in the opposite carriageway, separated by the barrier. Along the left sidewalk, a bicyclist rides parallel to traffic near storefronts while remaining off the roadway.", "hazard_reasoning": "There is a yellow hatchback driving away from the ego car in the ego lane. The vehicle ahead could brake or slow unexpectedly, so you should remain alert under this situation."}
{"id": "train_06797", "split": "train", "clip_key": "titan_clip_33_000450_movie", "source": {"subset": "titan", "scenario": "clip_33", "frame": "000450"}, "frames": ["titan_clip_33_000450_movie_t-3.jpg", "titan_clip_33_000450_movie_t-2.jpg", "titan_clip_33_000450_movie_t-1.jpg", "titan_clip_33_000450_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street with brick paving runs between mid-rise buildings, with parked vans along the left and light vehicle flow but many pedestrians; the ego-car proceeds in a single left-side lane with no median toward a small cross-street ahead. A female pedestrian in a black shirt and blue jeans walks ahead of and away from the ego vehicle in the lane as she maneuvers around the parked white van on the left, briefly occupying the ego path. On the right, two pedestrians move along the curb by storefronts, staying near the edge of the roadway. Farther ahead, several pedestrians cross the street at the upcoming junction, keeping the pace slow. A red truck and the white van remain stopped on the left, narrowing the roadway.", "hazard_reasoning": "There is a female pedestrian wearing a black shirt and a pair of blue jeans, walking in front of and away from the ego-car, because she is maneuvering around a parked vehicle. The driver should manoeuvre carefully around the pedestrian to maintain safe distance and avoid a collision as she may step into the driving lane."}
{"id": "train_06798", "split": "train", "clip_key": "2020-0204-150838_012985_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "012985"}, "frames": ["2020-0204-150838_012985_movie_t-3.jpg", "2020-0204-150838_012985_movie_t-2.jpg", "2020-0204-150838_012985_movie_t-1.jpg", "2020-0204-150838_012985_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately behind the black sedan", "environment_perception": "An urban multi-lane arterial with smooth pavement and no physical median shows heavy, stop-and-go traffic at a signalized intersection ahead. A black sedan directly ahead in the ego lane is stopped at the red light, holding the ego vehicle in the queue. To the right, a white minivan in the adjacent lane waits near the intersection, moving with the same queue. Farther ahead in the ego lane, a white van stands in line, further constraining progress. Overhead signals display red for our direction, and a posted 50 sign is visible on a roadside pole.", "hazard_reasoning": "There is a black sedan stopped in the ego lane because of a red traffic light ahead. Driver should stop immediately behind the sedan to avoid collision with the halted vehicle."}
{"id": "train_06799", "split": "train", "clip_key": "titan_clip_141_000030_movie", "source": {"subset": "titan", "scenario": "clip_141", "frame": "000030"}, "frames": ["titan_clip_141_000030_movie_t-3.jpg", "titan_clip_141_000030_movie_t-2.jpg", "titan_clip_141_000030_movie_t-1.jpg", "titan_clip_141_000030_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van.", "environment_perception": "An urban two-way street with one narrow lane per direction runs between tall shops; there is no median, the pavement is smooth, and both same-direction and opposing traffic are light. A white van is parked on the left side of the road in a curb bay beside the ego lane. Just ahead of it, a large box truck is stopped at the left curb, partially jutting into the ego lane and constraining the available width. Pedestrians on both sidewalks, including a man standing near the left curb and others walking past storefronts, remain on the sidewalk and do not enter the roadway. Roadside parking and information signs are visible on the left.", "hazard_reasoning": "There is a white van parked on the left side of the road. This parked vehicle may obstruct pedestrian visibility and require cautious maneuvering, so the driver should be aware to anticipate potential pedestrian movements."}
{"id": "train_06800", "split": "train", "clip_key": "titan_clip_546_000462_movie", "source": {"subset": "titan", "scenario": "clip_546", "frame": "000462"}, "frames": ["titan_clip_546_000462_movie_t-3.jpg", "titan_clip_546_000462_movie_t-2.jpg", "titan_clip_546_000462_movie_t-1.jpg", "titan_clip_546_000462_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of seated pedestrians", "environment_perception": "An urban back street with a single narrow two-way carriageway and no median runs between shopfronts, the pavement smooth and traffic light. A black car ahead along the left curb is stopped diagonally and partly protrudes into the lane, constraining the available width. A pedestrian near it walks in the roadway near the center and then keeps to the left, momentarily occupying the ego path. On the right side just ahead, two pedestrians wearing white sneakers sit at the curb facing left, very close to the lane but stationary. No traffic signals or special signs are salient.", "hazard_reasoning": "There are two pedestrians wearing white sneakers, sitting on the right side of the road, facing the left. The driver should be aware because seated pedestrians may enter the roadway unexpectedly."}
{"id": "train_06801", "split": "train", "clip_key": "titan_clip_169_000750_movie", "source": {"subset": "titan", "scenario": "clip_169", "frame": "000750"}, "frames": ["titan_clip_169_000750_movie_t-3.jpg", "titan_clip_169_000750_movie_t-2.jpg", "titan_clip_169_000750_movie_t-1.jpg", "titan_clip_169_000750_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene is an urban side street beneath a rail viaduct, a narrow two-way road without a median and with sound pavement; traffic is light and mostly pedestrian. Directly ahead, a tall man in a black suit crosses from the left sidewalk toward the right, walking across the ego lane and temporarily blocking the vehicle's path. On the left at the near crosswalk, another pedestrian waits by vending machines and faces the roadway, close enough to step into the lane. Farther ahead left, a person near a dark sedan steps off the curb and starts to cross diagonally, adding another conflict point. A single traffic cone and the viaduct wall line the right edge, tightening the available space.", "hazard_reasoning": "There is a tall man, wearing a black suit, crossing the street, from the left side to the right side of the road. The driver should slow down to avoid a potential collision with the pedestrian entering the vehicle's path."}
{"id": "train_06802", "split": "train", "clip_key": "2020-0129-144857_036064_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "036064"}, "frames": ["2020-0129-144857_036064_movie_t-3.jpg", "2020-0129-144857_036064_movie_t-2.jpg", "2020-0129-144857_036064_movie_t-1.jpg", "2020-0129-144857_036064_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated structure with a right-side guardrail and dry pavement, and traffic is heavy and almost stopped. A black SUV directly ahead in the ego lane is stationary with brake lights on because a queue extends forward. A large box truck farther ahead in the same lane is also stopped, setting the pace for the line. In the adjacent left lane, a white hatchback alongside creeps forward while remaining in its lane. A no-right-turn sign is posted on a pole at the junction ahead.", "hazard_reasoning": "There is a black SUV stopped in the ego lane because of traffic congestion ahead. Stopping will prevent a rear-end collision with the stationary SUV and adapt to the slowed traffic flow."}
{"id": "train_06803", "split": "train", "clip_key": "2020-0207-101955_086896_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "086896"}, "frames": ["2020-0207-101955_086896_movie_t-3.jpg", "2020-0207-101955_086896_movie_t-2.jpg", "2020-0207-101955_086896_movie_t-1.jpg", "2020-0207-101955_086896_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision.", "environment_perception": "The scene is a divided urban expressway under an elevated viaduct, with three same-direction lanes and smooth pavement; traffic is moderate with a localized slowdown. Directly ahead in the ego lane, a blue truck is stopped, blocking the path and constraining the ego car. In the adjacent left lane, a larger flatbed truck slightly ahead moves slowly alongside, limiting space for a lane change. Farther ahead in the right lane, a white passenger car continues at a steady pace and pulls away. Noise barriers line both sides and diagonal guide markings indicate a merge area.", "hazard_reasoning": "There is a blue truck stopped in the ego lane, in front of the ego car. Because the truck is stopped directly ahead in the ego lane, the driver must stop to avoid a collision."}
{"id": "train_06804", "split": "train", "clip_key": "titan_clip_219_000390_movie", "source": {"subset": "titan", "scenario": "clip_219", "frame": "000390"}, "frames": ["titan_clip_219_000390_movie_t-3.jpg", "titan_clip_219_000390_movie_t-2.jpg", "titan_clip_219_000390_movie_t-1.jpg", "titan_clip_219_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban downtown street with a narrow single lane, no median, smooth pavement, and light traffic runs between tall buildings as the car approaches a small intersection. Ahead, two pedestrians-a child and an adult-cross from left to right across the ego lane, momentarily blocking the path. Along the left side near the intersection, a pedestrian in a blue dress holding an umbrella walks away from the ego car along the curb. On the near-right corner, a man stands by the curb at the intersection and does not step into the road.", "hazard_reasoning": "There is a pedestrian wearing an umbrella and a blue dress, walking along the left side of the road, away from the ego car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should slow down to maintain a safe distance."}
{"id": "train_06805", "split": "train", "clip_key": "titan_clip_731_000090_movie", "source": {"subset": "titan", "scenario": "clip_731", "frame": "000090"}, "frames": ["titan_clip_731_000090_movie_t-3.jpg", "titan_clip_731_000090_movie_t-2.jpg", "titan_clip_731_000090_movie_t-1.jpg", "titan_clip_731_000090_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with a single narrow lane each direction has smooth pavement and light traffic as the vehicle proceeds straight between storefronts. On the right edge near the red awning, a man wearing a cap pushes a cart toward the camera along the curb and may encroach on the ego lane. Ahead near the center-left, a small group of pedestrians walks across toward the right sidewalk, occupying part of the lane. Far ahead in the same direction, a dark car continues away along the street. Rows of parked bicycles line both curbs, slightly narrowing the roadway.", "hazard_reasoning": "There is a man wearing a cap, pushing a cart, and walking, on the right side of the road, towards the ego-car. Since the pedestrian is moving towards the vehicle path without a clear buffer, the driver should carefully manoeuvre around him to avoid a collision."}
{"id": "train_06806", "split": "train", "clip_key": "2020-0203-114632_093775_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "093775"}, "frames": ["2020-0203-114632_093775_movie_t-3.jpg", "2020-0203-114632_093775_movie_t-2.jpg", "2020-0203-114632_093775_movie_t-1.jpg", "2020-0203-114632_093775_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban divided road with two same-direction lanes runs under an elevated structure beside a fence, the pavement dry and smooth with light traffic. A white van ahead in the ego lane drives away at a steady pace, gradually widening the gap. No other moving vehicles are close by in either lane, and no oncoming traffic is visible because the roadway is separated. No traffic signals or speed limit signs are prominent, and there are no obstacles in the lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06807", "split": "train", "clip_key": "2020-0205-103411_076853_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "076853"}, "frames": ["2020-0205-103411_076853_movie_t-3.jpg", "2020-0205-103411_076853_movie_t-2.jpg", "2020-0205-103411_076853_movie_t-1.jpg", "2020-0205-103411_076853_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road with good pavement and a wide painted median sits under strong sun glare, with moderate slow-moving traffic in the same direction and separated oncoming traffic to the far right. A gray truck directly ahead in the ego lane drives away from the camera, gradually pulling ahead and dictating the ego vehicle's pace. To the left, a boxy delivery truck runs nearly parallel slightly ahead, continuing straight and leaving little space for a lane change. Alongside on the far left, a small white minivan creeps forward beside the ego vehicle, briefly overlapping and constraining merging options. Farther right, another white van in the adjacent lane proceeds straight without encroaching.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06808", "split": "train", "clip_key": "titan_clip_1206_000570_movie", "source": {"subset": "titan", "scenario": "clip_1206", "frame": "000570"}, "frames": ["titan_clip_1206_000570_movie_t-3.jpg", "titan_clip_1206_000570_movie_t-2.jpg", "titan_clip_1206_000570_movie_t-1.jpg", "titan_clip_1206_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around him", "environment_perception": "An urban street with a single left-hand lane continues ahead, separated by bollards from a broader roadway on the right; the pavement is worn but passable, and overall traffic is light. At the left curb ahead in the ego lane, a white van is stopped while a man wearing a cap and blue shirt stands beside its open door unloading, partially occupying the lane and narrowing the path. On the separated roadway to the right, a few cars and buses travel steadily, not merging into the ego lane. Pedestrians wait and walk along the right-side sidewalk near a bus stop, staying clear of the carriageway. A no-entry sign marks a short lane on the right near the median.", "hazard_reasoning": "There is a tall man wearing a cap and a blue shirt, standing next to a van on the left side of the road, in the ego lane, because he is unloading the van. He is blocking the lane and may step into the vehicle's path, so the driver should carefully manoeuvre around him."}
{"id": "train_06809", "split": "train", "clip_key": "2020-0129-105040_100848_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "100848"}, "frames": ["2020-0129-105040_100848_movie_t-3.jpg", "2020-0129-105040_100848_movie_t-2.jpg", "2020-0129-105040_100848_movie_t-1.jpg", "2020-0129-105040_100848_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane divided road with a raised median and good pavement carries heavy traffic that is stopped for a red light. A white pickup truck stands directly ahead in the ego lane because the signal is red. In the lane to the left, a blue curtain-ided truck and a black minivan wait slightly ahead, forming a parallel queue beside the ego car. On the far left, a motorcyclist edges forward between lanes past the stopped line, moving ahead of the queue near the ego vehicle. Overhead signs show through arrows for the left and center lanes and a right-turn-only lane on the right, and the signal head ahead displays red.", "hazard_reasoning": "There is a white pickup truck stopped in front of the ego car, in the ego lane, because of red traffic lights. The driver should stop to avoid colliding with the stationary vehicle ahead at the red light."}
{"id": "train_06810", "split": "train", "clip_key": "2020-0129-144857_040068_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "040068"}, "frames": ["2020-0129-144857_040068_movie_t-3.jpg", "2020-0129-144857_040068_movie_t-2.jpg", "2020-0129-144857_040068_movie_t-1.jpg", "2020-0129-144857_040068_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban road runs under an elevated structure with two same-direction lanes, a right-side guardrail, and smooth pavement; traffic is heavy and largely stopped. Directly ahead in the ego lane, a black minivan is stopped with brake lights on because congestion ahead blocks the lane, holding the ego vehicle. In the adjacent left lane slightly ahead, a white hatchback waits in the queue, matching the standstill and closing off a potential merge. Beside the ego car on the left, a small white van creeps forward parallel in the neighboring lane. Farther ahead under the viaduct, a box truck fronts the line and rolls very slowly, sustaining the backup.", "hazard_reasoning": "There is a black minivan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance from the halted van and avoid colliding with its open rear door."}
{"id": "train_06811", "split": "train", "clip_key": "2020-0131-135401_050114_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "050114"}, "frames": ["2020-0131-135401_050114_movie_t-3.jpg", "2020-0131-135401_050114_movie_t-2.jpg", "2020-0131-135401_050114_movie_t-1.jpg", "2020-0131-135401_050114_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with left-side traffic runs between mid-rise buildings; the pavement is smooth and a curbside bike marking lines the left edge. Traffic is heavy and slow as vehicles approach a signalized intersection. Directly ahead, a white hatchback in the ego lane is stopped at a red light, so the ego car waits behind it. In the adjacent right lane, a white van slightly ahead creeps forward, remaining alongside and limiting any lane change. Farther ahead to the right, a queue of vans and cars inches toward the junction, governing the overall pace. The overhead signal shows red.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid rear-ending the halted vehicle at the red light."}
{"id": "train_06812", "split": "train", "clip_key": "2020-0213-143552_005829_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "005829"}, "frames": ["2020-0213-143552_005829_movie_t-3.jpg", "2020-0213-143552_005829_movie_t-2.jpg", "2020-0213-143552_005829_movie_t-1.jpg", "2020-0213-143552_005829_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked vehicle ahead", "environment_perception": "An urban arterial with two lanes per direction and no physical median runs straight on smooth pavement, with light traffic. Ahead in the ego lane, a dark box truck is parked with its hazard lights blinking, standing still and blocking the ego path. In the adjacent right same-direction lane, a white van continues forward past the stopped truck, potentially constraining a lane change to bypass the obstruction. In the oncoming lanes to the right, a white box truck approaches at moderate speed, staying in its lane and posing no conflict.", "hazard_reasoning": "There is a truck with its hazard lights blinking, parked in front of the ego car, in the ego lane. This parked truck occupies your lane and may require you to reduce speed or change lanes to avoid it."}
{"id": "train_06813", "split": "train", "clip_key": "2020-0227-104226_057619_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "057619"}, "frames": ["2020-0227-104226_057619_movie_t-3.jpg", "2020-0227-104226_057619_movie_t-2.jpg", "2020-0227-104226_057619_movie_t-1.jpg", "2020-0227-104226_057619_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential two-lane road with a solid yellow centerline and smooth pavement, traffic is light and the flow steady under clear skies. Far ahead in the oncoming lane, a small white truck approaches at a moderate pace, remaining in its lane and not affecting the ego path. Near the right curb very close to the camera, a bicyclist rides in the same direction along the shoulder and could drift toward the ego lane. On the left sidewalk, a pedestrian walks along the edge by a driveway, staying off the roadway.", "hazard_reasoning": "There is a blue sedan slowing in the ego lane, in front of the ego car, because there is a truck lane changing into the ego lane ahead. The truck's unexpected merge is forcing the sedan to brake, so you should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_06814", "split": "train", "clip_key": "2020-0226-140503_084845_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "084845"}, "frames": ["2020-0226-140503_084845_movie_t-3.jpg", "2020-0226-140503_084845_movie_t-2.jpg", "2020-0226-140503_084845_movie_t-1.jpg", "2020-0226-140503_084845_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to maintain safe distance.", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy traffic that queues at a signalized intersection. Directly ahead, a white hatchback is stopped in the ego lane because the traffic light is red, holding the ego vehicle. To the left, a cement mixer truck stands parallel in the adjacent lane, also halted and close to the lane line. In the lane to the right, a small white truck creeps toward the stop line near the corner, edging forward beside the queue. The signal heads for our approach show red.", "hazard_reasoning": "A white hatchback is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to maintain a safe following distance and comply with the red signal."}
{"id": "train_06815", "split": "train", "clip_key": "titan_clip_177_000456_movie", "source": {"subset": "titan", "scenario": "clip_177", "frame": "000456"}, "frames": ["titan_clip_177_000456_movie_t-3.jpg", "titan_clip_177_000456_movie_t-2.jpg", "titan_clip_177_000456_movie_t-1.jpg", "titan_clip_177_000456_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban downtown street with mid-rise buildings has a two-lane roadway without a median, smooth pavement, and light to moderate flow that slows near a zebra crosswalk. Ahead, a white kei car in the ego lane rolls forward and then eases to a slow pace at the crosswalk, constraining the ego vehicle. To the right ahead, a large box truck is stopped at the curb, occupying part of the lane and contributing to the slowdown. At the left side of the road, a pedestrian wearing a hat and a gray dress and carrying a handbag steps onto the crosswalk and moves from left to right across the lane, directly affecting the ego path. Other pedestrians wait near the store and on the right sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a hat, a gray dress, and carrying a handbag, at the left side of the road, crossing the street from the left side of the street to the right side. The driver should yield because the pedestrian is crossing the vehicle's path, requiring a slowdown to avoid collision."}
{"id": "train_06816", "split": "train", "clip_key": "2020-0226-140503_015278_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "015278"}, "frames": ["2020-0226-140503_015278_movie_t-3.jpg", "2020-0226-140503_015278_movie_t-2.jpg", "2020-0226-140503_015278_movie_t-1.jpg", "2020-0226-140503_015278_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down; white semi truck is slowing", "environment_perception": "An urban undivided street with two lanes each way runs between midrise buildings; the asphalt is damp and worn, and traffic is moderate, bunching near an intersection where the signal ahead shows red. A white semi truck ahead in the left ego lane slows toward the stop line, constraining the ego vehicle's pace. In the adjacent right same-direction lane, a white van and a small car decelerate in parallel toward the light and stay in their lane. Oncoming vehicles, including a dark SUV, proceed toward the camera in their two lanes to the right of the double centerlines without encroaching. A person with a bicycle waits on the left sidewalk behind a fence and remains off the roadway.", "hazard_reasoning": "There is a white semi truck slowing in the ego lane. This reduced speed may force sudden braking if not anticipated, so the driver should slow down to maintain a safe following distance."}
{"id": "train_06817", "split": "train", "clip_key": "2020-0213-143552_063394_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "063394"}, "frames": ["2020-0213-143552_063394_movie_t-3.jpg", "2020-0213-143552_063394_movie_t-2.jpg", "2020-0213-143552_063394_movie_t-1.jpg", "2020-0213-143552_063394_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multilane road with a planted median on the right has dry, well-kept pavement and moderate traffic that bunches near an intersection. A black van ahead of the ego car moves from the ego lane to the right lane toward the median, changing lanes away from the ego because a large box truck ahead is slowing. The box truck farther ahead in the right lane decelerates and creates a short queue that sets the pace for traffic. A small white van ahead-left continues straight in the left lane at a steady, slow speed alongside the ego vehicle. Parked and service vehicles sit by a gas station on the left, outside the travel lanes.", "hazard_reasoning": "A black van is changing lanes from the ego lane to the right lane, away from the ego car because of a truck slowing ahead. The lane change indicates the traffic ahead is decelerating, so the driver should slow down to maintain a safe distance."}
{"id": "train_06818", "split": "train", "clip_key": "2020-0210-101957_040203_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "040203"}, "frames": ["2020-0210-101957_040203_movie_t-3.jpg", "2020-0210-101957_040203_movie_t-2.jpg", "2020-0210-101957_040203_movie_t-1.jpg", "2020-0210-101957_040203_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with smooth pavement runs straight, divided from opposing traffic by a low fence median; flow is moderate. A small blue flatbed truck travels ahead in the left lane at a steady pace and effectively sets the car's speed. On the far side of the fence to the right, a white van and several cars approach as oncoming traffic and pass by without interacting. Farther ahead in the same direction a few vehicles are spaced out and continue steadily. Overhead gantries display blue direction signs for upcoming routes and districts. Sidewalks border both sides, with a pedestrian near the left-side buildings staying on the curb.", "hazard_reasoning": "The scene shows no immediate hazards requiring driver action."}
{"id": "train_06819", "split": "train", "clip_key": "titan_clip_284_000312_movie", "source": {"subset": "titan", "scenario": "clip_284", "frame": "000312"}, "frames": ["titan_clip_284_000312_movie_t-3.jpg", "titan_clip_284_000312_movie_t-2.jpg", "titan_clip_284_000312_movie_t-1.jpg", "titan_clip_284_000312_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck.", "environment_perception": "A narrow urban two-way street with buildings tight to the curbs has dry pavement and light traffic, and orange cones line the right sidewalk. A silver box truck is parked ahead along the right side of the road, narrowing the usable lane and constraining the ego vehicle's approach. On the left, a pedestrian in a white jacket walks forward near the curb beside a parked scooter, close to the travel lane and potentially edging into it. Next to the truck on the right, a person stands at its rear and moves slightly in the lane while attending to the vehicle, creating a possible entry into the ego path. No traffic signals or speed signs are visible.", "hazard_reasoning": "There is a silver truck parked on the right side of the road. It partially blocks the roadway and limits forward visibility, so the driver should manoeuvre carefully around it."}
{"id": "train_06820", "split": "train", "clip_key": "2020-0207-151349_074730_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "074730"}, "frames": ["2020-0207-151349_074730_movie_t-3.jpg", "2020-0207-151349_074730_movie_t-2.jpg", "2020-0207-151349_074730_movie_t-1.jpg", "2020-0207-151349_074730_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane two-way road runs under an elevated structure, with dry pavement and moderate traffic as the ego car approaches a signalized intersection with a crosswalk. Ahead in the ego lane, a brown truck drives away through the intersection, leading the queue and determining the ego vehicle's pace. Slightly ahead to the left, a white compact car in a parallel same-direction lane continues straight at similar speed, remaining alongside. On the right side of the roadway, oncoming white vans pass through the intersection in their lanes, crossing ahead in the opposite flow without entering the ego lane.", "hazard_reasoning": "There is a brown truck driving in the ego lane, away from the ego car. The driver should follow the vehicle ahead to maintain a safe distance and prepare to stop at the red light."}
{"id": "train_06821", "split": "train", "clip_key": "titan_clip_1029_000378_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1029_000378_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1029_000378_movie_t-3_augB1.jpg", "titan_clip_1029_000378_movie_t-2_augB1.jpg", "titan_clip_1029_000378_movie_t-1_augB1.jpg", "titan_clip_1029_000378_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to approaching pedestrians on your right", "environment_perception": "An urban commercial alley with a single narrow shared lane and block-paved surface runs straight ahead, with no median and light vehicular traffic. The roadway is clear but constricted by a stopped white van and shop signboards, reducing available width. Ahead on the right, two pedestrians in white shirts and black pants walk toward the ego vehicle near the middle of the lane, potentially entering its path. Next to them on the right edge, a worker at the open rear of the white van unloads items and moves a small cart, partially protruding into the lane and limiting space to pass. Farther ahead in the center distance, another pedestrian walks away along the lane, lightly constraining the ego vehicle's pace. Parked bicycles and cones line the right side, further narrowing the corridor.", "hazard_reasoning": "There is are two pedestrians wearing white shirts and black pants, and walking on the right side of the road, towards the ego car. The two pedestrians are approaching the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_06822", "split": "train", "clip_key": "2020-0131-103016_078666_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "078666"}, "frames": ["2020-0131-103016_078666_movie_t-3.jpg", "2020-0131-103016_078666_movie_t-2.jpg", "2020-0131-103016_078666_movie_t-1.jpg", "2020-0131-103016_078666_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial curves gently right with plastic bollards and painted chevrons separating lanes; the pavement looks clean and traffic flows at a moderate, steady pace. A white van ahead in the ego lane moves away smoothly, setting the following distance. Another white van runs slightly ahead in the adjacent right lane, tracking the right-curving branch parallel to the ego lane without merging. Two trucks in the left lane ahead travel slowly beside the bollard-separated section, remaining in their lane and not affecting the ego vehicle's path. Overhead, a no right turn sign is visible near the signal heads.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06823", "split": "train", "clip_key": "2020-0221-115122_016084_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "016084"}, "frames": ["2020-0221-115122_016084_movie_t-3.jpg", "2020-0221-115122_016084_movie_t-2.jpg", "2020-0221-115122_016084_movie_t-1.jpg", "2020-0221-115122_016084_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated structure carries two same-direction lanes with a right-side guardrail separating opposing traffic; the pavement is dry and traffic inches forward in heavy congestion. A white van directly ahead in the ego lane slows repeatedly because of congestion ahead, constraining the ego-vehicle's pace. To the right, a black SUV in the adjacent lane creeps forward roughly parallel to the ego car, limiting an easy lane change. On the left, a small black microvan proceeds along a narrow side lane past the ego vehicle and may merge ahead.", "hazard_reasoning": "There is a white van slowing down ahead of the ego-car, in the ego lane, because of traffic congestion ahead. Slow down to maintain a safe following distance as vehicles ahead are decelerating due to congestion."}
{"id": "train_06824", "split": "train", "clip_key": "2020-0206-142535_005927_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "005927"}, "frames": ["2020-0206-142535_005927_movie_t-3.jpg", "2020-0206-142535_005927_movie_t-2.jpg", "2020-0206-142535_005927_movie_t-1.jpg", "2020-0206-142535_005927_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with one lane each way runs between mid-rise buildings; the pavement looks clean and traffic is light, with construction barriers and cones along the left curb narrowing the shoulder. A small white flatbed truck travels ahead in the ego lane, and we follow behind it. An oncoming pink bus encroaches into the ego lane toward the camera to pass an obstruction, maneuvering around a parked vehicle on the right and briefly opposing our path. A black van is parked at the right curb, constricting the oncoming lane and prompting the bus's movement.", "hazard_reasoning": "There is a pink bus maneuvering in the ego lane, towards the ego car, because of a parked vehicle on the right. The bus's unexpected merge could cause a collision if you do not stop promptly."}
{"id": "train_06825", "split": "train", "clip_key": "titan_clip_90_000018_movie", "source": {"subset": "titan", "scenario": "clip_90", "frame": "000018"}, "frames": ["titan_clip_90_000018_movie_t-3.jpg", "titan_clip_90_000018_movie_t-2.jpg", "titan_clip_90_000018_movie_t-1.jpg", "titan_clip_90_000018_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street with one narrow lane each direction has smooth pavement and no median, and traffic is light. The ego vehicle proceeds in the left lane toward a zebra crossing between tall buildings. A black sedan is parked on the left side of the road within orange cones, jutting slightly into the ego lane and narrowing the passage. Ahead on the right in the oncoming lane, a dark minivan is stopped at the curb, forming a pinch point opposite the parked sedan. On the right sidewalk a man walks toward the camera near the curb beside the minivan, close to the vehicle path as the ego passes.", "hazard_reasoning": "There is a black sedan parked on the left side of the road. Drivers should carefully manoeuvre around the parked vehicle to avoid collision."}
{"id": "train_06826", "split": "train", "clip_key": "2020-0129-144857_057550_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "057550"}, "frames": ["2020-0129-144857_057550_movie_t-3.jpg", "2020-0129-144857_057550_movie_t-2.jpg", "2020-0129-144857_057550_movie_t-1.jpg", "2020-0129-144857_057550_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction and a guardrail median runs under a pedestrian overpass; the pavement is dry and traffic is light on our side but heavier opposite. A white box truck ahead in the ego lane drives away from the ego car, moving steadily and increasing the gap, which governs the ego vehicle's pace. On the opposite carriageway to the right, a line of cars and a gray truck approach at slow to moderate speed behind the barrier with no interaction with the ego path.", "hazard_reasoning": "The white truck is driving away from the ego car in the ego lane. Because a red traffic light lies ahead, following the lead vehicle helps anticipate its stop and maintain safe distance."}
{"id": "train_06827", "split": "train", "clip_key": "2020-0131-103016_016623_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "016623"}, "frames": ["2020-0131-103016_016623_movie_t-3.jpg", "2020-0131-103016_016623_movie_t-2.jpg", "2020-0131-103016_016623_movie_t-1.jpg", "2020-0131-103016_016623_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban multilane road with three same-direction lanes runs between midrise buildings; the pavement is good and traffic is heavy and slow. A gray van directly ahead in the ego lane is stopped, waiting to merge into the adjacent right lane, holding up the ego vehicle. In the right lane, a white van draws alongside and continues forward, blocking the gap the gray van seeks. To the left, a sedan and a small truck ahead crawl in their lane, keeping the overall pace sluggish. Overhead signals are present but their aspect is unclear.", "hazard_reasoning": "There is a gray van stopped in front of the ego car because it is waiting for a safe moment to merge into the right lane. The van's sudden stop and planned merge could force you to brake abruptly, so you should stop to maintain a safe following distance."}
{"id": "train_06828", "split": "train", "clip_key": "2020-0225-145150_000647_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "000647"}, "frames": ["2020-0225-145150_000647_movie_t-3.jpg", "2020-0225-145150_000647_movie_t-2.jpg", "2020-0225-145150_000647_movie_t-1.jpg", "2020-0225-145150_000647_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of cyclist ahead", "environment_perception": "An urban two-way street with one lane per direction and double yellow centerlines runs between mid-rise buildings; the pavement is smooth and traffic appears light to moderate. A cyclist wearing all black rides ahead on the left side of the road, moving away from the ego vehicle and occupying the near-edge of the ego lane. Farther ahead in the same direction, a motorcycle proceeds straight near the centerline, keeping course within the lane. In the opposite direction, a white car approaches in the oncoming lane and continues past along the centerline. Parked cars line the right curb, narrowing the usable space near the edge.", "hazard_reasoning": "A cyclist wearing all black is cycling on the left side of the road, away from the ego car. The cyclist may veer into the ego lane unexpectedly, so the driver should be cautious to maintain a safe buffer zone."}
{"id": "train_06829", "split": "train", "clip_key": "titan_clip_1122_000432_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1122_000432_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1122_000432_movie_t-3_augB1.jpg", "titan_clip_1122_000432_movie_t-2_augB1.jpg", "titan_clip_1122_000432_movie_t-1_augB1.jpg", "titan_clip_1122_000432_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian in road.", "environment_perception": "A narrow urban street with a single marked lane runs between shops and a construction wall on the right; the pavement is smooth and traffic is light with no oncoming vehicles visible. A pedestrian in a white shirt and black pants carrying a blue handbag walks away from the ego vehicle in the middle of the road ahead, occupying the path. Two pedestrians at the right foreground walk toward the camera along the roadway edge beside a parked white van, reducing lateral clearance. A white car ahead in the same direction continues straight toward a junction, setting the pace. A yield sign and a prohibition sign appear near the worksite.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a blue handbag, and walking away from the ego car, in the middle of the road. The pedestrian's position in the lane creates a collision risk, so the driver should yield to avoid striking them."}
{"id": "train_06830", "split": "train", "clip_key": "2020-0129-105040_039571_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "039571"}, "frames": ["2020-0129-105040_039571_movie_t-3.jpg", "2020-0129-105040_039571_movie_t-2.jpg", "2020-0129-105040_039571_movie_t-1.jpg", "2020-0129-105040_039571_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway ramp inside a covered tunnel curves gently right, with a single one-way lane bordered by a concrete wall on the left and a guardrail on the right; the dry pavement looks intact and traffic is light. Ahead in the ego lane, a white dump truck drives away, opening the gap because the road ahead is clear. Slightly nearer and to the right in the same lane, a motorcycle proceeds forward within the ego path and may briefly constrain the ego vehicle's pace until it clears. No salient signals or signs are visible, and there is no oncoming traffic.", "hazard_reasoning": "There is a white dump truck driving in the ego lane, away from the ego car, because the traffic is clear ahead. The driver should follow the vehicle ahead to maintain a safe distance and be prepared for any sudden braking."}
{"id": "train_06831", "split": "train", "clip_key": "2020-0218-103119_031402_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0218-103119_031402_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0218-103119_031402_movie_t-3_augB1.jpg", "2020-0218-103119_031402_movie_t-2_augB1.jpg", "2020-0218-103119_031402_movie_t-1_augB1.jpg", "2020-0218-103119_031402_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with at least two lanes in the ego direction; the pavement is smooth with a few dark patches, and traffic is light to moderate. A white truck directly ahead in the ego lane slows, constraining the ego car's pace. A small silver van travels ahead in the adjacent right lane at a steady speed, remaining clear of the ego lane. At the right curb, a dark car is stopped at the roadside. Overhead, a blue direction sign points toward Oji, Hongo, and Gokokuji, and a pedestrian overpass spans the roadway ahead.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane. The truck's reduced speed may require the driver to slow down to maintain a safe following distance."}
{"id": "train_06832", "split": "train", "clip_key": "titan_clip_727_000546_movie", "source": {"subset": "titan", "scenario": "clip_727", "frame": "000546"}, "frames": ["titan_clip_727_000546_movie_t-3.jpg", "titan_clip_727_000546_movie_t-2.jpg", "titan_clip_727_000546_movie_t-1.jpg", "titan_clip_727_000546_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist", "environment_perception": "A narrow urban street with no center divider and smooth pavement curves gently right, and traffic is light. A black sedan ahead travels forward near the right edge, and a box truck farther ahead moves in the same direction and may slow the flow as space tightens. A pedestrian slightly left of center ahead walks away in the roadway toward the right side, occupying the ego path. On the left at a side junction, a cyclist in a green shirt rides toward the ego car because there is no bicycle lane, approaching along the curb and potentially entering the path. A long row of parked bicycles lines the right sidewalk.", "hazard_reasoning": "There is a cyclist wearing a green shirt and cycling towards the ego car, on the left side of the intersection, because there is no bicycle lane. The cyclist may move unpredictably into the vehicle's path due to the lack of a bike lane, so the driver should be aware of the cyclist."}
{"id": "train_06833", "split": "train", "clip_key": "2020-0225-102455_061167_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "061167"}, "frames": ["2020-0225-102455_061167_movie_t-3.jpg", "2020-0225-102455_061167_movie_t-2.jpg", "2020-0225-102455_061167_movie_t-1.jpg", "2020-0225-102455_061167_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "'Stop behind the van.'", "environment_perception": "An urban multi-lane road approaches a wide signalized intersection with good pavement and no median, and traffic is light but stopped at the line. A white van directly ahead in the ego lane is stationary for a red light, holding the ego vehicle. To the left, a black sedan in the adjacent same-direction lane is also stopped at the stop line. To the right, a silver minivan in the neighboring lane waits slightly ahead, positioned to continue straight when the signal changes. The overhead signals facing the queue show red, and no pedestrians or obstacles are visible.", "hazard_reasoning": "A white van is stopped in front of the ego car in the ego lane, because the light is red. The van's stop at the red light requires the driver to stop behind it to comply with traffic rules and avoid a collision."}
{"id": "train_06834", "split": "train", "clip_key": "titan_clip_549_000192_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_549_000192_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_549_000192_movie_t-3_augB1.jpg", "titan_clip_549_000192_movie_t-2_augB1.jpg", "titan_clip_549_000192_movie_t-1_augB1.jpg", "titan_clip_549_000192_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial back street appears with a single narrow two-way lane, no median, and mostly smooth pavement, and overall movement is light and slow. In the middle ahead, a woman in a white T-shirt and brown shorts carrying a backpack walks away from the ego vehicle along the center of the roadway, occupying the path. A few pedestrians farther ahead also walk in the same direction near the center, reducing the available lane. From the right side close to the camera, an oncoming cyclist pedals toward the ego along the curb and passes near the vehicle's path.", "hazard_reasoning": "There is a woman wearing a white t-shirt and brown shorts, carrying a backpack, and walking in the middle of the road, away from the ego car. The driver should slow down to avoid colliding with the pedestrian in the roadway."}
{"id": "train_06835", "split": "train", "clip_key": "2020-0214-102601_001950_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "001950"}, "frames": ["2020-0214-102601_001950_movie_t-3.jpg", "2020-0214-102601_001950_movie_t-2.jpg", "2020-0214-102601_001950_movie_t-1.jpg", "2020-0214-102601_001950_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down for cyclist in your lane", "environment_perception": "An urban neighborhood street with a single narrow lane each way is divided by a yellow centerline; the pavement looks smooth with a red textured section, and traffic remains light. Ahead in the ego lane, a cyclist rides near the middle of the road because there is no bike lane, continuing forward and occupying the ego path, which constrains our pace. On the left sidewalk a pedestrian walks toward the upcoming crosswalk but stays on the walkway. Another pedestrian stands near the right corner by the zebra crossing, appearing to wait. A signalized crosswalk spans the junction ahead, and no oncoming vehicles are visible.", "hazard_reasoning": "There is a cyclist cycling in the middle of the road, in the ego lane, because there is no bike lane. The driver should slow down for the cyclist in your lane to avoid collision."}
{"id": "train_06836", "split": "train", "clip_key": "2020-0228-150133_054705_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "054705"}, "frames": ["2020-0228-150133_054705_movie_t-3.jpg", "2020-0228-150133_054705_movie_t-2.jpg", "2020-0228-150133_054705_movie_t-1.jpg", "2020-0228-150133_054705_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction runs between mid-rise buildings, divided from oncoming lanes by a white guardrail and hedge median; the asphalt is patched but smooth. Traffic is moderate to heavy and compresses ahead. A gray sedan directly ahead in the ego lane slows because congestion builds further up, constraining the ego car's pace. In the adjacent left lane, a black sedan draws alongside and then edges forward while continuing straight. Beyond the median on the right, a dense stream of oncoming cars and vans moves the opposite way, with a large truck standing near the curb in the foreground.", "hazard_reasoning": "There is a gray sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced traffic speed."}
{"id": "train_06837", "split": "train", "clip_key": "titan_clip_459_000030_movie", "source": {"subset": "titan", "scenario": "clip_459", "frame": "000030"}, "frames": ["titan_clip_459_000030_movie_t-3.jpg", "titan_clip_459_000030_movie_t-2.jpg", "titan_clip_459_000030_movie_t-1.jpg", "titan_clip_459_000030_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian ahead", "environment_perception": "A narrow urban shopping street with a single unmarked lane and no median runs between storefronts; the pavement is smooth and traffic is light. Ahead in the ego lane near the left curb, a white van stands nearly stationary, narrowing the passage and constraining the ego vehicle's pace. In front of it, a pedestrian wearing a white T-shirt, blue pants, and a cap, carrying a handbag, walks toward the ego vehicle in the lane because the parked van blocks their path, making them relevant to the ego vehicle's course. Another pedestrian on the left sidewalk moves along the road but remains off the lane and poses no immediate interaction. Sidewalk signs and parked bicycles line the edges, slightly reducing roadside clearance.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, blue pants, wearing a cap, carrying a handbag walking toward the ego car, because of the parked vehicle, in front of the ego car. The parked van blocks the pedestrian's path, causing them to step into the lane unexpectedly, so you should slow down to avoid a collision."}
{"id": "train_06838", "split": "train", "clip_key": "2020-0226-101332_007365_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "007365"}, "frames": ["2020-0226-101332_007365_movie_t-3.jpg", "2020-0226-101332_007365_movie_t-2.jpg", "2020-0226-101332_007365_movie_t-1.jpg", "2020-0226-101332_007365_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "An urban two-way road with one lane each way leads to a signalized intersection, divided by a solid yellow centerline; the pavement looks smooth and traffic is light. The ego travels in the left lane. Directly ahead in the ego lane, a blue minivan begins to pull away through the intersection as the traffic light is green, setting the ego car's pace. On the left shoulder by the railing, a cyclist waits and remains outside the travel lane. Pedestrians stand on the right and far sidewalks near the crosswalks and do not step into the roadway.", "hazard_reasoning": "There's a blue minivan starting to drive in front of the ego car, in the ego lane, because of the green traffic light. Since the signal has turned green and the lead vehicle is moving, the driver should start moving promptly to maintain traffic flow and avoid hesitation."}
{"id": "train_06839", "split": "train", "clip_key": "2020-0210-101957_047113_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_047113_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_047113_movie_t-3_augB1.jpg", "2020-0210-101957_047113_movie_t-2_augB1.jpg", "2020-0210-101957_047113_movie_t-1_augB1.jpg", "2020-0210-101957_047113_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban four-lane arterial with two lanes per direction, divided by double solid white lines, runs straight on dry pavement as traffic is heavy and compresses ahead. A black minivan directly ahead in the ego lane slows because of congestion and sets the pace for the ego car. To the left, a red minivan in the curbside same-direction lane also decelerates alongside, limiting space to merge. On the opposite side, a large silver truck approaches in the nearest oncoming lane by the center lines and continues steadily.", "hazard_reasoning": "There is a black minivan slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The minivan's reduced speed signals upstream congestion, so you should slow down to maintain a safe distance and prevent a collision."}
{"id": "train_06840", "split": "train", "clip_key": "titan_clip_93_000180_movie", "source": {"subset": "titan", "scenario": "clip_93", "frame": "000180"}, "frames": ["titan_clip_93_000180_movie_t-3.jpg", "titan_clip_93_000180_movie_t-2.jpg", "titan_clip_93_000180_movie_t-1.jpg", "titan_clip_93_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street lined with tall buildings and shops forms a narrow two-way road with no median, smooth pavement, and light moving traffic, though curbside parking on both sides squeezes the lane. A pedestrian in a white shirt with a backpack stands ahead on the left between two parked vehicles, close to the roadway and potentially entering the ego lane. A white flatbed truck is stopped at the right curb near the ego vehicle, its body encroaching into the lane and narrowing the passage. Farther ahead in the same direction, a dark car continues straight along the center of the street, moving away down the corridor of parked vehicles.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, and standing on the left side of the road between two parked vehicles in front of the ego-car. The pedestrian's position between parked vehicles limits visibility and may lead to sudden entry into the travel lane, so the driver should slow down to stay prepared for unexpected movements."}
{"id": "train_06841", "split": "train", "clip_key": "titan_clip_342_000642_movie", "source": {"subset": "titan", "scenario": "clip_342", "frame": "000642"}, "frames": ["titan_clip_342_000642_movie_t-3.jpg", "titan_clip_342_000642_movie_t-2.jpg", "titan_clip_342_000642_movie_t-1.jpg", "titan_clip_342_000642_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban shopping street with a cobblestone surface and no marked lanes runs between close storefronts; the pavement looks good and motor traffic is light while pedestrian activity is high. A pedestrian wearing a black T-shirt and carrying a handbag walks away on the left side of the road close to the ego vehicle's line. Another pedestrian ahead near the center of the roadway walks away in the same direction, effectively constraining the ego vehicle's pace. A small covered truck is stopped along the right curb ahead, narrowing the passage and drawing pedestrians around its rear. No prominent signals or posted speeds are visible.", "hazard_reasoning": "A pedestrian wearing a black t-shirt and handbag is walking on the left side of the road, away from the ego car. The pedestrian may cross or step into your lane unexpectedly, so you should manoeuvre carefully around them."}
{"id": "train_06842", "split": "train", "clip_key": "titan_clip_983_000414_movie", "source": {"subset": "titan", "scenario": "clip_983", "frame": "000414"}, "frames": ["titan_clip_983_000414_movie_t-3.jpg", "titan_clip_983_000414_movie_t-2.jpg", "titan_clip_983_000414_movie_t-1.jpg", "titan_clip_983_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of nearby pedestrian", "environment_perception": "An urban back street with closely spaced buildings forms a narrow two-way road without a centerline; the pavement is smooth and traffic is light with no oncoming vehicles. Ahead on the right edge, a pedestrian in a gray suit walks away from the ego car along the roadway margin near a parked van and may enter the ego lane. On the left, a woman stands still at the curb on the sidewalk near scooters and may step into the lane. Farther ahead, several pedestrians cross the roadway near an alley, occupying the ego path briefly. A white van is parked on the right with its rear door open, narrowing the usable lane, and a no-parking sign is posted on the left building.", "hazard_reasoning": "There is a pedestrian wearing a gray suit, walking along the right side of the road, away from the ego car. Because the pedestrian is close to the travel lane, they may enter the roadway unexpectedly, so the driver should remain cautious and monitor their movement."}
{"id": "train_06843", "split": "train", "clip_key": "titan_clip_775_000492_movie", "source": {"subset": "titan", "scenario": "clip_775", "frame": "000492"}, "frames": ["titan_clip_775_000492_movie_t-3.jpg", "titan_clip_775_000492_movie_t-2.jpg", "titan_clip_775_000492_movie_t-1.jpg", "titan_clip_775_000492_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban two-way street with no median and smooth pavement shows light traffic as the ego vehicle proceeds in the left lane while parked vehicles narrow the roadway. On the right edge ahead, a pedestrian in a white shirt and black pants walks toward the ego along the carriageway because a parked van blocks the curb space, and he may edge into the travel lane. No oncoming vehicles are visible nearby and no moving vehicles directly ahead constrain the pace. A 30 speed limit sign stands on the right. Parked vans on both sides create a brief pinch point around the pedestrian, with no other hazards evident.", "hazard_reasoning": "There is a pedestrian wearing black pant and white shirt walking towards the ego car on the right side of the road, because of a parked car. The driver should manoeuvre carefully around the pedestrian to maintain a safe distance and avoid collision."}
{"id": "train_06844", "split": "train", "clip_key": "2020-0131-103016_043958_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "043958"}, "frames": ["2020-0131-103016_043958_movie_t-3.jpg", "2020-0131-103016_043958_movie_t-2.jpg", "2020-0131-103016_043958_movie_t-1.jpg", "2020-0131-103016_043958_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with multiple lanes approaches a wide signalized intersection, the pavement smooth and a landscaped median dividing directions; traffic is light to moderate and moves steadily. A black sedan slightly ahead to the left continues straight in the same direction, loosely setting the ego vehicle's pace. Farther ahead in the center lane, a small white car proceeds straight with a comfortable gap. To the right, a pair of vehicles including a white van follows the right-turn slip lane around the median, turning right and staying clear of the ego lane. The intersection geometry and median are the main features, with tall office buildings lining both sides and no obvious obstacles.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06845", "split": "train", "clip_key": "2020-0220-102630_074651_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "074651"}, "frames": ["2020-0220-102630_074651_movie_t-3.jpg", "2020-0220-102630_074651_movie_t-2.jpg", "2020-0220-102630_074651_movie_t-1.jpg", "2020-0220-102630_074651_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated two-way road with a single lane in each direction curves gently right, bounded by concrete barriers and fencing; the pavement is smooth and traffic is light. A white van ahead in the ego lane slows on the curve because a truck farther ahead in the same lane is also slowing, so it constrains the ego car's pace. The box truck remains in front of the van near the center of the curve and continues decelerating, maintaining a short gap. A round 50 sign is visible ahead, indicating the posted speed for this segment.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The driver should slow down to maintain a safe following distance and anticipate reduced speed traffic."}
{"id": "train_06846", "split": "train", "clip_key": "titan_clip_471_000048_movie", "source": {"subset": "titan", "scenario": "clip_471", "frame": "000048"}, "frames": ["titan_clip_471_000048_movie_t-3.jpg", "titan_clip_471_000048_movie_t-2.jpg", "titan_clip_471_000048_movie_t-1.jpg", "titan_clip_471_000048_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "An urban shopping street with a single narrow shared lane and no centerline runs between storefronts; the cobblestone-style pavement looks dry and the traffic flow is light. A man in the middle of the roadway ahead walks toward the ego-vehicle, carrying a handbag and holding his hands near his face, and he occupies the ego lane. Two pedestrians a bit farther ahead slightly left cross diagonally to the right across the lane, potentially entering the ego path. A small white van sits far ahead near the end of the block in the same corridor, appearing mostly stationary and limiting space. Shop signs and small cones line the edges, but no signals or posted speeds are visible.", "hazard_reasoning": "There is a man carrying a handbag, clasping his hands in front of his face, and walking in the middle of the road in front of and toward the ego-car. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_06847", "split": "train", "clip_key": "2020-0213-143552_061075_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "061075"}, "frames": ["2020-0213-143552_061075_movie_t-3.jpg", "2020-0213-143552_061075_movie_t-2.jpg", "2020-0213-143552_061075_movie_t-1.jpg", "2020-0213-143552_061075_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with two same-direction lanes runs beside low-rise buildings, with a narrow raised median on the right and smooth pavement; traffic is slowed to a halt. A white box truck directly ahead in the ego lane is stopped and blocks the lane in front of the ego car. A black van in the left lane alongside creeps forward, preventing an immediate merge around the truck. Beyond the median, the opposite carriageway is visible but offers no direct interaction.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The driver should stop to avoid colliding with the stationary truck ahead."}
{"id": "train_06848", "split": "train", "clip_key": "2020-0225-102455_017731_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "017731"}, "frames": ["2020-0225-102455_017731_movie_t-3.jpg", "2020-0225-102455_017731_movie_t-2.jpg", "2020-0225-102455_017731_movie_t-1.jpg", "2020-0225-102455_017731_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop for pedestrian crossing", "environment_perception": "An urban, signalized two-way intersection with smooth pavement and no median is approached; traffic is moderate with cars queued near the crosswalk and across the junction. A man in black carrying a bag crosses the near zebra from right to left directly ahead, blocking the ego lane. On the left, a woman steps from the curb and proceeds rightward across the same crosswalk in front of the car. Ahead right, a white hatchback waits at the line by the crosswalk, yielding to pedestrians and not entering the ego lane. Overhead traffic lights control the junction, and oncoming vehicles are visible beyond the intersection.", "hazard_reasoning": "There is a man wearing black clothing, carrying a bag, and crossing the street on a crosswalk, from the right to the left side. The pedestrian is entering the vehicle's path under a red light, so the driver must stop to yield and avoid a collision."}
{"id": "train_06849", "split": "train", "clip_key": "titan_clip_1312_000060_movie", "source": {"subset": "titan", "scenario": "clip_1312", "frame": "000060"}, "frames": ["titan_clip_1312_000060_movie_t-3.jpg", "titan_clip_1312_000060_movie_t-2.jpg", "titan_clip_1312_000060_movie_t-1.jpg", "titan_clip_1312_000060_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with small shops lines both sides, one lane each way, no median, and dry smooth pavement. Traffic is very light with no moving vehicles in either direction. On the left edge just ahead, a pedestrian in checkered pants and a gray shirt stands by a utility pole parking his bicycle, close to the ego lane and potentially stepping into it. Farther ahead near the middle of the road, another pedestrian walks away along the center of the ego lane, briefly occupying the path. Several parked bicycles and planters crowd the right curb outside storefronts, slightly narrowing the carriageway.", "hazard_reasoning": "There is a pedestrian standing to the left of the ego lane in front of the ego car, wearing checkered pants and a gray shirt, because he is parking his bicycle. The pedestrian might enter the lane to park his bicycle, so the driver should carefully manoeuvre around him to avoid a collision."}
{"id": "train_06850", "split": "train", "clip_key": "titan_clip_661_000240_movie", "source": {"subset": "titan", "scenario": "clip_661", "frame": "000240"}, "frames": ["titan_clip_661_000240_movie_t-3.jpg", "titan_clip_661_000240_movie_t-2.jpg", "titan_clip_661_000240_movie_t-1.jpg", "titan_clip_661_000240_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "A narrow urban commercial street with a single lane and no median runs ahead, the pavement smooth and traffic slow. Two delivery vehicles, a large white box truck and a smaller white van, proceed ahead in the ego lane at low speed and govern the car's pace. A man wearing a blue short-sleeved T-shirt and glasses rides a bicycle ahead on the right side near the curb, moving in the same direction and close to the car's path, so he may enter the lane. A pedestrian on the right walks along the roadway edge beside shop fronts. Signboards and short posts protrude from the right, narrowing the passage.", "hazard_reasoning": "There is a man wearing a blue short-sleeved T-shirt and glasses, cycling a bicycle on the right side of the road, in front of the ego car. The cyclist is close ahead and may require the driver to adjust path or speed to avoid collision by manoeuvring around safely."}
{"id": "train_06851", "split": "train", "clip_key": "titan_clip_84_000342_movie", "source": {"subset": "titan", "scenario": "clip_84", "frame": "000342"}, "frames": ["titan_clip_84_000342_movie_t-3.jpg", "titan_clip_84_000342_movie_t-2.jpg", "titan_clip_84_000342_movie_t-1.jpg", "titan_clip_84_000342_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked coupe", "environment_perception": "An urban shopping street with a single narrow lane and no divider; pavement is smooth and lined with trees and storefronts. Traffic is light to moderate, moving slowly in the same direction with no visible oncoming lane. A silver sedan just ahead in the lane continues straight at low speed, setting the pace. There is a black coupe parked on the right side of the road near the ego vehicle, reducing clearance along the curb. A large white van and several other cars are parked along the left side beside the ego vehicle, further narrowing the corridor. An orange cone stands at the right curb near a shop entrance.", "hazard_reasoning": "There is a black coupe parked on the right side of the road. The parked coupe reduces the available lane width and may force a sudden path adjustment; manoeuvre carefully to avoid collision."}
{"id": "train_06852", "split": "train", "clip_key": "titan_clip_1101_000264_movie", "source": {"subset": "titan", "scenario": "clip_1101", "frame": "000264"}, "frames": ["titan_clip_1101_000264_movie_t-3.jpg", "titan_clip_1101_000264_movie_t-2.jpg", "titan_clip_1101_000264_movie_t-1.jpg", "titan_clip_1101_000264_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow shared roadway has no lane markings or median, paved with blocks and lined by storefronts; there is no vehicle traffic and pedestrian flow is moderate. Several pedestrians ahead in the middle walk away from the camera, occupying the path and effectively setting the pace. On the left edge, a pedestrian carrying a handbag walks away along the storefronts, staying near the curb and outside the ego vehicle's direct line. Farther ahead near the center, another pedestrian approaches toward the camera through the gap between groups, reducing the available space. Shop signs, A-boards, and a few parked bicycles cluster along both sides and slightly constrict the corridor.", "hazard_reasoning": "There is a pedestrian carrying a handbag, and walking on the left side of the road, away from the ego road. The pedestrian could unexpectedly step into the vehicle's path, so you should slow down to maintain a safe distance and avoid a potential collision."}
{"id": "train_06853", "split": "train", "clip_key": "2020-0226-101332_073691_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "073691"}, "frames": ["2020-0226-101332_073691_movie_t-3.jpg", "2020-0226-101332_073691_movie_t-2.jpg", "2020-0226-101332_073691_movie_t-1.jpg", "2020-0226-101332_073691_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban intersection on a multi-lane road curves right past a small raised median with chevron signs; the worn asphalt appears dry and traffic is light. A gray van ahead in the ego lane drives away through the bend, matching the caption and setting the pace. To the right, a bicyclist rides across the zebra crossing toward the center of the road and may enter the adjacent right lane near the junction. On the left sidewalk, a pedestrian with a backpack walks near the curb by the crosswalk but stays off the roadway.", "hazard_reasoning": "There is a gray van driving in the ego lane away from the ego car. The van could brake suddenly or change speed, so the driver should remain alert to maintain a safe following distance."}
{"id": "train_06854", "split": "train", "clip_key": "2020-0205-103411_034924_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "034924"}, "frames": ["2020-0205-103411_034924_movie_t-3.jpg", "2020-0205-103411_034924_movie_t-2.jpg", "2020-0205-103411_034924_movie_t-1.jpg", "2020-0205-103411_034924_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the white van merging", "environment_perception": "An urban two-lane road runs straight with a guardrail separating it from an adjacent carriageway on the right; the pavement is dry and traffic is light and steady. Ahead in the left lane, a white van moves right and cuts into the ego lane, reducing the following gap. Farther ahead in the ego lane, a dark car continues straight at a constant speed, loosely setting the pace. Several vehicles are parked along the left curb but remain outside the travel lane.", "hazard_reasoning": "There is a white van in the left lane, cutting in to the ego lane. The driver should be ready for its unexpected merging to maintain a safe distance."}
{"id": "train_06855", "split": "train", "clip_key": "titan_clip_282_000054_movie", "source": {"subset": "titan", "scenario": "clip_282", "frame": "000054"}, "frames": ["titan_clip_282_000054_movie_t-3.jpg", "titan_clip_282_000054_movie_t-2.jpg", "titan_clip_282_000054_movie_t-1.jpg", "titan_clip_282_000054_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the bicycle", "environment_perception": "A narrow urban street with no centerline and smooth pavement stretches ahead between close storefronts, and traffic is light with no moving vehicles. A gray bicycle is parked at the right curb where there is no marked parking space, slightly protruding into the travel way and narrowing the ego path. Several other bicycles remain parked along the left storefronts ahead at the edge, not intruding into the lane. A person stands by the right-side shop near the parked bikes without stepping into the roadway. No signals or speed signs are visible, and there is no oncoming or same-direction traffic.", "hazard_reasoning": "There is a gray bicycle parked on the right side of the road, because there is no parking spot. You should manoeuvre carefully around the bicycle to avoid collision."}
{"id": "train_06856", "split": "train", "clip_key": "titan_clip_1223_000024_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1223_000024_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1223_000024_movie_t-3_augB1.jpg", "titan_clip_1223_000024_movie_t-2_augB1.jpg", "titan_clip_1223_000024_movie_t-1_augB1.jpg", "titan_clip_1223_000024_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single undivided lane and worn asphalt runs between dense buildings, and overall traffic is light and slow due to heavy roadside parking. Ahead, a group of six pedestrians walks in the middle of the road away from the ego car, occupying the travel path and setting the pace. Immediately left of the ego vehicle, a parked white van with its rear door open protrudes into the lane, reducing passing space. Farther ahead, several cars are stopped along both curbs, especially on the left, narrowing the channel and keeping the ego vehicle centered. No signals or notable signs affect movement, and no oncoming vehicles appear.", "hazard_reasoning": "A group of six pedestrians is walking in the middle of the road, away from the ego car. Slow down to reduce speed and avoid a potential collision with them in your path."}
{"id": "train_06857", "split": "train", "clip_key": "2020-0220-102630_084680_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "084680"}, "frames": ["2020-0220-102630_084680_movie_t-3.jpg", "2020-0220-102630_084680_movie_t-2.jpg", "2020-0220-102630_084680_movie_t-1.jpg", "2020-0220-102630_084680_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two lanes in the ego's direction runs between midrise buildings, separated from oncoming lanes by a metal fence; the pavement looks good and traffic is heavy and slow, bunching to a stop ahead. A white van is directly ahead in the ego lane and stops because of congestion, holding the ego vehicle stationary. A box truck in the adjacent left lane just ahead crawls forward with the jam, restricting any chance to move over. A dark sedan to the left alongside also edges ahead slowly, further blocking a left merge. Oncoming traffic flows beyond the fence on the opposite carriageway.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane because of traffic congestion ahead. The driver should stop promptly to avoid colliding with the stationary vehicle."}
{"id": "train_06858", "split": "train", "clip_key": "2020-0221-115122_004370_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "004370"}, "frames": ["2020-0221-115122_004370_movie_t-3.jpg", "2020-0221-115122_004370_movie_t-2.jpg", "2020-0221-115122_004370_movie_t-1.jpg", "2020-0221-115122_004370_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane divided arterial runs through a dense city center with smooth pavement and a grassy median, and traffic is moderate to heavy with a queue at the signalized intersection ahead. A silver sedan directly ahead in the ego lane slows toward the crosswalk because of congestion, constraining the ego car's pace. A small flatbed truck slightly ahead in the adjacent right lane proceeds straight at a similar speed toward the same queue, limiting an easy lane change. Oncoming vehicles flow on the far side of the median to the right, separated from the ego's direction. A black hatchback is parked along the left curb but stays outside the travel lane.", "hazard_reasoning": "There is a silver sedan slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe distance and avoid a rear-end collision in the congested traffic."}
{"id": "train_06859", "split": "train", "clip_key": "2020-0129-105040_060808_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-105040_060808_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-105040_060808_movie_t-3_augB1.jpg", "2020-0129-105040_060808_movie_t-2_augB1.jpg", "2020-0129-105040_060808_movie_t-1_augB1.jpg", "2020-0129-105040_060808_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban two-way shopping street with a single narrow lane per direction and no median appears well paved, with red edge strips and light traffic. An oncoming cyclist rides near the middle of the roadway toward the ego-vehicle, directly opposing its path and likely constraining its progress. A small white truck is stopped tight to the curb on the right while workers stand on a ladder at the storefront, narrowing the passage and creating a roadside work hazard. A pedestrian waits at the left curb by a shop entrance near the crosswalk, close to the travel lane and potentially stepping out.", "hazard_reasoning": "There is a female cyclist, in red pants and a red coat, cycling in the middle of the road towards the ego-car. The driver should carefully manoeuvre around the cyclist to avoid a potential collision as she occupies the vehicle's path."}
{"id": "train_06860", "split": "train", "clip_key": "titan_clip_1210_000222_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1210_000222_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1210_000222_movie_t-3_augB1.jpg", "titan_clip_1210_000222_movie_t-2_augB1.jpg", "titan_clip_1210_000222_movie_t-1_augB1.jpg", "titan_clip_1210_000222_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist approaching on the right side", "environment_perception": "A dense urban shopping street serves as a narrow two-way shared road with no marked lanes, paved in stone-pattern blocks and in good condition; vehicular flow is light but pedestrian activity is heavy. A small white van approaches oncoming near the center-right, easing through the crowd and limiting the ego vehicle's progress. A cyclist in a white shirt and cap rides ahead near the middle, moving away between pedestrians and briefly wavering within the ego path. Numerous pedestrians on both sides walk along and across the roadway directly ahead, with several midblock crossings from the left storefronts occupying the lane. A green truck is stopped at the right curb and parked bicycles with safety cones line the left, narrowing the passage.", "hazard_reasoning": "There is a cyclist wearing a white shirt, red shorts, and a cap, cycling on the right side of the road, towards the ego car. The cyclist is approaching the vehicle's path from the right, so the driver should be aware to avoid a potential collision."}
{"id": "train_06861", "split": "train", "clip_key": "2020-0206-101736_058848_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "058848"}, "frames": ["2020-0206-101736_058848_movie_t-3.jpg", "2020-0206-101736_058848_movie_t-2.jpg", "2020-0206-101736_058848_movie_t-1.jpg", "2020-0206-101736_058848_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided roadway with two same-direction lanes curves right under an elevated structure, bordered by guardrails and a hedge; the dry pavement carries moderate-to-heavy, slowing traffic. A white hatchback directly ahead in the ego lane slows because cars are queuing under the overpass, constraining the ego vehicle's pace. In the adjacent left lane slightly ahead, a loaded flatbed truck proceeds slowly in parallel, matching the congestion. Farther left, a silver van travels alongside at a similar speed without encroaching on the ego lane. An overhead gantry with lane-control signals is visible but unlit.", "hazard_reasoning": "A white hatchback is slowing in front of the ego car in the ego lane, because of traffic congestion. Slow down to maintain a safe following distance as the hatchback is slowing due to congestion."}
{"id": "train_06862", "split": "train", "clip_key": "2020-0212-102546_079779_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "079779"}, "frames": ["2020-0212-102546_079779_movie_t-3.jpg", "2020-0212-102546_079779_movie_t-2.jpg", "2020-0212-102546_079779_movie_t-1.jpg", "2020-0212-102546_079779_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial with smooth pavement and a central divider stretches ahead, and traffic is light and flowing steadily. A white flatbed truck directly ahead in the ego lane approaches the intersection and initiates a right turn across the lanes, doing so on a green right-turn arrow and momentarily constraining the ego vehicle's path. In the adjacent right lane, a black minivan draws alongside and continues straight at a slightly higher speed, remaining in its lane without cutting in. Overhead traffic signals are visible at the junction, including the illuminated right-turn arrow for the truck.", "hazard_reasoning": "There is a white truck turning right in front of the ego car, in the ego lane, because of a green arrow light. Since the truck is cutting across your lane to turn, you should follow it to maintain safe spacing and avoid sudden braking."}
{"id": "train_06863", "split": "train", "clip_key": "2020-0212-102546_039522_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "039522"}, "frames": ["2020-0212-102546_039522_movie_t-3.jpg", "2020-0212-102546_039522_movie_t-2.jpg", "2020-0212-102546_039522_movie_t-1.jpg", "2020-0212-102546_039522_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban multi-lane arterial runs beneath an elevated structure, with smooth pavement and clear markings; traffic is moderate and currently queued at an intersection. The ego vehicle waits in the left-side lanes with same-direction traffic alongside and no physical median visible. A gray van ahead in the ego lane is stopped for a red light, holding the ego car. A silver box truck in the adjacent right lane waits slightly ahead without encroaching. On the left, a white SUV and a purple truck line up closely beside the ego vehicle and remain stopped. Overhead signals ahead display red for the ego direction.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop because the red light requires halting to avoid a collision with the stopped vehicle ahead."}
{"id": "train_06864", "split": "train", "clip_key": "2020-0205-152530_050840_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "050840"}, "frames": ["2020-0205-152530_050840_movie_t-3.jpg", "2020-0205-152530_050840_movie_t-2.jpg", "2020-0205-152530_050840_movie_t-1.jpg", "2020-0205-152530_050840_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with clean pavement carries moderate same-direction traffic, with clear lane markings and overhead direction signs visible ahead. A small white box truck directly ahead in the ego lane slows, constraining the ego car's pace. A large silver truck runs slightly ahead in the right-adjacent lane at similar speed, limiting any immediate move to the right. Two light vans ahead in the neighboring lanes continue straight and gradually pull away, posing no conflict. A bus stop with several pedestrians stands along the left sidewalk behind a railing. A roadside sign on the left indicates bus-priority times, and additional gantry signs span the roadway further ahead.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's reduced speed creates a risk of collision if the ego-vehicle does not decelerate in time, so the driver should slow down to maintain a safe following distance."}
{"id": "train_06865", "split": "train", "clip_key": "2020-0227-104226_101774_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "101774"}, "frames": ["2020-0227-104226_101774_movie_t-3.jpg", "2020-0227-104226_101774_movie_t-2.jpg", "2020-0227-104226_101774_movie_t-1.jpg", "2020-0227-104226_101774_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The video shows an urban divided arterial with three same-direction lanes, smooth pavement, and a guardrail median on the right separating oncoming traffic; overall flow is moderate. A white and brown truck directly ahead in the ego lane slows, reducing the ego car's pace. Ahead to the left, a small kei pickup continues in the left lane near the curb at similar speed without entering the ego lane. To the right, a white hatchback draws slightly ahead in the right lane, overtaking the ego vehicle and the slowing truck. Oncoming vehicles pass beyond the median.", "hazard_reasoning": "There is a white and brown truck slowing down in front of the ego car in the ego lane. The truck's deceleration may require the driver to reduce speed to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_06866", "split": "train", "clip_key": "titan_clip_799_000042_movie", "source": {"subset": "titan", "scenario": "clip_799", "frame": "000042"}, "frames": ["titan_clip_799_000042_movie_t-3.jpg", "titan_clip_799_000042_movie_t-2.jpg", "titan_clip_799_000042_movie_t-1.jpg", "titan_clip_799_000042_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cones and truck", "environment_perception": "An urban two-way street with a single narrow lane each direction, no median, and smooth pavement shows light traffic throughout. Ahead in the left lane, a construction truck stands curbside, surrounded by traffic cones that form a small work zone and partially block the ego lane, narrowing the path. Farther ahead beyond it, a small white car proceeds away in the same direction along the lane. No salient signals or posted limits are visible, and building work lines the left side of the road.", "hazard_reasoning": "There are traffic cones in the road, surrounding a truck. The cones indicate an active construction zone narrowing the lane and obstructing the path, so the driver should manoeuvre carefully to avoid collision."}
{"id": "train_06867", "split": "train", "clip_key": "titan_clip_1176_000276_movie", "source": {"subset": "titan", "scenario": "clip_1176", "frame": "000276"}, "frames": ["titan_clip_1176_000276_movie_t-3.jpg", "titan_clip_1176_000276_movie_t-2.jpg", "titan_clip_1176_000276_movie_t-1.jpg", "titan_clip_1176_000276_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van.", "environment_perception": "A narrow urban two-way street with no centerline curves gently right, the pavement smooth and the environment tightly lined by buildings; traffic is light with no moving vehicles visible. Ahead in the ego lane, a white van is stopped at the left curb with its rear hatch open and being unloaded, protruding into the lane and constraining the available width. On the right side ahead, two pedestrians walk away along the roadway edge toward the bend, close to the travel path and potentially influencing the ego vehicle's speed while passing the van. No salient signals or posted speeds are visible, and there is no oncoming traffic in view.", "hazard_reasoning": "There is a white van stopped on the left side of the lane, because it is being unloaded. The van may block part of the driving lane and reduce visibility, so the driver should manoeuvre carefully around it to avoid collision."}
{"id": "train_06868", "split": "train", "clip_key": "titan_clip_514_000198_movie", "source": {"subset": "titan", "scenario": "clip_514", "frame": "000198"}, "frames": ["titan_clip_514_000198_movie_t-3.jpg", "titan_clip_514_000198_movie_t-2.jpg", "titan_clip_514_000198_movie_t-1.jpg", "titan_clip_514_000198_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "be aware of parked motorcycle", "environment_perception": "A narrow urban backstreet with a single unmarked lane runs between mid-rise buildings; the cobblestone-like pavement has patches and stains, and traffic is light with no moving vehicles. On the right ahead, a yellow motorcycle is parked at the curb, slightly constricting the lane. Two pedestrians on the right sidewalk walk toward the camera near planters, while another person on the left by a storefront stands close to the curb. Farther ahead near the right curb, a cyclist waits beside the roadway. No notable traffic signals or signs are visible, and no oncoming traffic appears.", "hazard_reasoning": "There is a yellow motorcycle parked on the right side of the road. The parked motorcycle may obstruct part of the driving lane or require the driver to adjust position to maintain safe clearance."}
{"id": "train_06869", "split": "train", "clip_key": "2020-0127-132751_006242_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "006242"}, "frames": ["2020-0127-132751_006242_movie_t-3.jpg", "2020-0127-132751_006242_movie_t-2.jpg", "2020-0127-132751_006242_movie_t-1.jpg", "2020-0127-132751_006242_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial between tall buildings has smooth pavement and a painted red lane on the far left; traffic is heavy and crawls forward with no physical median, just lane markings. A black dump truck directly ahead in the ego lane pulls away slowly, effectively setting the ego vehicle's pace. A small white van ahead and slightly to the right continues straight in the adjacent lane, keeping parallel without merging toward the ego path. A black taxi to the right advances alongside in its lane, limiting lateral room for the ego vehicle.", "hazard_reasoning": "There's a black truck, driving away from the ego car, in the ego lane, because of green traffic lights. The traffic signal has changed to green, so you should start moving to follow the flow ahead."}
{"id": "train_06870", "split": "train", "clip_key": "2020-0225-145150_018455_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "018455"}, "frames": ["2020-0225-145150_018455_movie_t-3.jpg", "2020-0225-145150_018455_movie_t-2.jpg", "2020-0225-145150_018455_movie_t-1.jpg", "2020-0225-145150_018455_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial lined with mid-rise buildings carries two-way traffic on four lanes with only painted center lines, the pavement looks smooth, and flow is moderate while approaching a green-lit intersection. A gray van ahead in the ego lane drives away from the camera and continues straight through the junction, gradually widening the gap. A black hatchback slightly ahead to the left proceeds in the adjacent same-direction lane at a similar speed, remaining alongside through the intersection. On the right, an oncoming white van approaches in its lane and goes straight past, separated by the center lines.", "hazard_reasoning": "There is a gray van driving in the ego lane away from the ego car. The gray van could change lanes unexpectedly, so stay aware of its movement."}
{"id": "train_06871", "split": "train", "clip_key": "2020-0227-153144_022418_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "022418"}, "frames": ["2020-0227-153144_022418_movie_t-3.jpg", "2020-0227-153144_022418_movie_t-2.jpg", "2020-0227-153144_022418_movie_t-1.jpg", "2020-0227-153144_022418_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multi-lane intersection on a wide two-way road without a median, the pavement is dry and smooth and cross traffic is heavy while the ego vehicle waits at the stop line. The overhead signal facing the ego shows red. Ahead, a black sedan is in the middle of the intersection turning left across the ego lane, moving in front of the ego-car. On the near zebra crossing, several pedestrians from both sides walk across the ego lane, directly blocking any advance. A cyclist near the left side also rides across the crosswalk ahead, further occupying the path. From the right side of the junction, cars including a dark hatchback traverse from right to left, keeping the intersection busy and limiting gaps.", "hazard_reasoning": "There is a black sedan driving in the middle of the intersection, in front of the ego-car, because it is turning left. You need to stop to avoid collision with the turning vehicle."}
{"id": "train_06872", "split": "train", "clip_key": "2020-0218-103119_019521_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "019521"}, "frames": ["2020-0218-103119_019521_movie_t-3.jpg", "2020-0218-103119_019521_movie_t-2.jpg", "2020-0218-103119_019521_movie_t-1.jpg", "2020-0218-103119_019521_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two-way traffic runs straight on dry, well-kept pavement, separated by double solid white lines; overall flow is moderate and steady. A white van ahead in the ego lane moves away at a steady pace, setting the following distance. To the right, several oncoming vehicles, including a black sedan and a truck, approach in their lanes on the opposite side of the divider and do not interact with the ego path. Along the left shoulder behind a guardrail, multiple maintenance trucks remain parked. Overhead blue direction boards span the road farther ahead.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. The driver should follow the vehicle ahead at a safe distance to reduce the risk of collision if it brakes suddenly."}
{"id": "train_06873", "split": "train", "clip_key": "2020-0228-102841_002379_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "002379"}, "frames": ["2020-0228-102841_002379_movie_t-3.jpg", "2020-0228-102841_002379_movie_t-2.jpg", "2020-0228-102841_002379_movie_t-1.jpg", "2020-0228-102841_002379_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop to avoid hitting pedestrian", "environment_perception": "An urban alley-like shopping street forms a very narrow two-way road with no centerline or sidewalks, smooth pavement, and light vehicle traffic amid many pedestrians. In the center ahead, a pedestrian in black walks away from the ego car along the lane, doing so because a bicycle is parked in the pedestrian space on the left. On the right edge near the camera, two pedestrians walk toward the vehicle along the curb, partly in the roadway and constricting the available width. On the left beside a shop, another person stands at the curb next to stacked goods and a parked bicycle that protrude into the walking area. Far ahead beneath a rail bridge, an oncoming car approaches slowly in the opposite direction but remains distant.", "hazard_reasoning": "There's a pedestrian wearing black pants and a black jacket walking in front of and away from the ego car, away from the ego car, because of a bicycle parked in the pedestrian lane. The pedestrian is entering the driving lane unexpectedly due to the obstructed sidewalk, so the driver must stop to avoid hitting them."}
{"id": "train_06874", "split": "train", "clip_key": "2020-0203-114632_089696_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "089696"}, "frames": ["2020-0203-114632_089696_movie_t-3.jpg", "2020-0203-114632_089696_movie_t-2.jpg", "2020-0203-114632_089696_movie_t-1.jpg", "2020-0203-114632_089696_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road runs beneath an elevated expressway, with three same-direction lanes and smooth pavement; traffic is queued at an intersection. A white minivan directly ahead in the ego lane is stopped for the red signal at the intersection, holding the ego car. To the left, a black sedan in the adjacent lane waits at the line at a similar pace. To the right, a large box truck in the outer lane stands still slightly ahead, narrowing the view to the right. The overhead traffic lights ahead display red.", "hazard_reasoning": "There is a white SUV stopped in the ego lane because of the red light ahead at the intersection. Stop now to avoid rear-ending the stopped vehicle at the intersection."}
{"id": "train_06875", "split": "train", "clip_key": "titan_clip_790_000222_movie", "source": {"subset": "titan", "scenario": "clip_790", "frame": "000222"}, "frames": ["titan_clip_790_000222_movie_t-3.jpg", "titan_clip_790_000222_movie_t-2.jpg", "titan_clip_790_000222_movie_t-1.jpg", "titan_clip_790_000222_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban neighborhood street curves gently right, a narrow two-way road with no median, bollard-protected red shoulders, and dry, smooth pavement; traffic is light. An oncoming black van passes close along the right edge as it goes by in its lane. Ahead on the right shoulder, a bicyclist rides forward and drifts left at the merge, which may bring them into the ego lane on the curve. On the left sidewalk, two pedestrians walk near storefronts and remain off the carriageway. The curve, bollards, and a right-side merge point limit space and visibility.", "hazard_reasoning": "No hazards detected; the roadway is clear and conditions are normal, so maintain safe driving."}
{"id": "train_06876", "split": "train", "clip_key": "2020-0131-103016_008021_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "008021"}, "frames": ["2020-0131-103016_008021_movie_t-3.jpg", "2020-0131-103016_008021_movie_t-2.jpg", "2020-0131-103016_008021_movie_t-1.jpg", "2020-0131-103016_008021_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop behind the motorcycle to avoid collision", "environment_perception": "An urban multi-lane arterial runs under elevated walkways, with three same-direction lanes, a concrete barrier on the right, and smooth pavement; traffic is moderate and bunches near a signalized intersection. A white motorcycle is stopped ahead in the ego lane because the traffic light shows red, directly limiting the ego vehicle's progress. In the lane to the right, a white van ahead is also stopped at the light and holds position. To the left, a black sedan slightly ahead slows to a halt in its lane as it approaches the red signal.", "hazard_reasoning": "There is a white motorcycle stopped in the ego lane because of the red traffic light ahead at the intersection. Drivers should stop to avoid colliding with the stationary motorcycle at the red light."}
{"id": "train_06877", "split": "train", "clip_key": "2020-0205-152530_044008_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "044008"}, "frames": ["2020-0205-152530_044008_movie_t-3.jpg", "2020-0205-152530_044008_movie_t-2.jpg", "2020-0205-152530_044008_movie_t-1.jpg", "2020-0205-152530_044008_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with good pavement carries moderate bidirectional traffic, with only painted lane dividers separating oncoming flow on the right as the ego vehicle approaches a wide intersection. Ahead in the ego lane, a white box truck slows, constraining the ego car's pace. Slightly ahead in the adjacent right lane, a dark sedan continues straight at a steady speed alongside without merging. Near the left curb, a silver van proceeds in its lane with similar speed. Pedestrians on the left sidewalk walk near the crossing but stay clear of the roadway.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The slowing truck ahead reduces the gap and could force a rapid brake, so you should slow down to maintain a safe distance."}
{"id": "train_06878", "split": "train", "clip_key": "2020-0205-103411_025023_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "025023"}, "frames": ["2020-0205-103411_025023_movie_t-3.jpg", "2020-0205-103411_025023_movie_t-2.jpg", "2020-0205-103411_025023_movie_t-1.jpg", "2020-0205-103411_025023_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane roadway with smooth pavement runs between trees and a right-side guardrail, and traffic moves lightly to moderately without stopping. A black van directly ahead in the ego lane accelerates away beneath the green light, serving as the lead vehicle. A white hatchback just ahead to the left travels straight in its lane at a steady pace and remains clear of the ego path. Farther ahead, several cars across the lanes continue straight with stable gaps. The signal up the road shows green, and an overhead sign posts 50.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06879", "split": "train", "clip_key": "2020-0131-103016_074243_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "074243"}, "frames": ["2020-0131-103016_074243_movie_t-3.jpg", "2020-0131-103016_074243_movie_t-2.jpg", "2020-0131-103016_074243_movie_t-1.jpg", "2020-0131-103016_074243_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial with smooth pavement carries heavy, slow-moving traffic between tall buildings, with all lanes moving in the same direction and no median visible. A white minivan directly ahead in the ego lane slows because of the congestion ahead and sets the ego vehicle's pace. To the right, a large box truck runs parallel just ahead at low speed, restricting the option to merge right. On the left, a small delivery truck creeps forward at a similar pace, occupying the adjacent lane and leaving little room to pass. Farther ahead, multiple trucks queue across lanes, keeping the flow consistently congested.", "hazard_reasoning": "There is a white minivan slowing down in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the slowing minivan, as traffic congestion ahead may lead to sudden stops."}
{"id": "train_06880", "split": "train", "clip_key": "titan_clip_967_000072_movie", "source": {"subset": "titan", "scenario": "clip_967", "frame": "000072"}, "frames": ["titan_clip_967_000072_movie_t-3.jpg", "titan_clip_967_000072_movie_t-2.jpg", "titan_clip_967_000072_movie_t-1.jpg", "titan_clip_967_000072_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian.", "environment_perception": "An urban neighborhood setting features a very narrow two-way road without a marked centerline, bordered by curbside lines; the pavement appears smooth and dry, and traffic is light with no vehicles ahead or oncoming. A pedestrian wearing a white shirt, blue pants, and a backpack crosses midblock from the left toward the right in the middle of the road, moving into the ego vehicle's path. Another pedestrian ahead slightly left walks away along the lane center, constraining the space available in the ego lane. A third person stands at the left curb by the buildings, stationary near the roadway. Shopfronts closely line the right side.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, blue pants, and carrying a backpack, in the middle of the road, crossing the street from the left side of the street to the right side. Because the pedestrian is crossing unexpectedly in the middle of the road, the driver should yield to avoid a collision."}
{"id": "train_06881", "split": "train", "clip_key": "titan_clip_491_000096_movie", "source": {"subset": "titan", "scenario": "clip_491", "frame": "000096"}, "frames": ["titan_clip_491_000096_movie_t-3.jpg", "titan_clip_491_000096_movie_t-2.jpg", "titan_clip_491_000096_movie_t-1.jpg", "titan_clip_491_000096_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with one lane each way, a solid center line, and smooth pavement carries light traffic as parked vehicles line both curbs. Ahead on the left, a pedestrian carrying a backpack walks along the roadway to get around a parked vehicle, moving in front of the ego car and potentially edging into the ego lane. On the right ahead, an oncoming white box truck is stopped at the curb with its nose slightly in the lane, narrowing the oncoming side but not impeding the ego path. Far ahead in the same direction, a car proceeds straight and keeps a steady pace. A round speed-limit sign is posted on a pole along the street.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking on the left side of the road, in front of the ego-car, because of the parked vehicle. Because the pedestrian is diverted into the lane by the parked vehicle, the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_06882", "split": "train", "clip_key": "2020-0220-151845_023219_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "023219"}, "frames": ["2020-0220-151845_023219_movie_t-3.jpg", "2020-0220-151845_023219_movie_t-2.jpg", "2020-0220-151845_023219_movie_t-1.jpg", "2020-0220-151845_023219_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for the stopped van ahead", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with three same-direction lanes and a left-side guardrail; the pavement is dry and traffic is heavy and stop-and-go. The ego vehicle queues behind a black van directly ahead in the ego lane that is stopped due to congestion ahead, holding the car stationary. To the left, a silver van slightly ahead in the adjacent lane is also stopped, limiting any move left. To the right, a small silver car alongside creeps forward, constraining a right merge, while a red wagon farther ahead queues behind a truck beneath the pillars.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. You should stop to maintain a safe distance and avoid collision with the stationary vehicle ahead."}
{"id": "train_06883", "split": "train", "clip_key": "2020-0129-105040_089650_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "089650"}, "frames": ["2020-0129-105040_089650_movie_t-3.jpg", "2020-0129-105040_089650_movie_t-2.jpg", "2020-0129-105040_089650_movie_t-1.jpg", "2020-0129-105040_089650_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision", "environment_perception": "An urban multi-lane arterial with a painted chevron median and dry, intact pavement carries moderate, steady traffic. A gray hatchback directly ahead in the ego lane is slowing and sets the pace for the ego car. To the right, a red sedan in the adjacent lane continues forward a little faster and overtakes without encroaching on the ego lane. On the far left near the curb, a bicyclist rides in the same direction along the edge of the roadway, remaining outside the travel lane. An overhead guide sign appears ahead but no signals are in view, and there are no obvious obstacles or work zones.", "hazard_reasoning": "There is a gray hatchback slowing down in front of the ego car. The driver should anticipate the deceleration and adjust speed to maintain a safe following distance under this situation."}
{"id": "train_06884", "split": "train", "clip_key": "titan_clip_1231_000336_movie", "source": {"subset": "titan", "scenario": "clip_1231", "frame": "000336"}, "frames": ["titan_clip_1231_000336_movie_t-3.jpg", "titan_clip_1231_000336_movie_t-2.jpg", "titan_clip_1231_000336_movie_t-1.jpg", "titan_clip_1231_000336_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban backstreet with green edge strips and worn pavement climbs gently between closely spaced buildings, and traffic is light on this two-way road with no sidewalks. A small white van ahead in the ego lane moves slowly uphill and sets the car's pace. Two pedestrians farther ahead near the center-right walk uphill within the lane and drift slightly toward the vehicle's path as they pass shopfronts. On the left side, a pedestrian wearing a red T-shirt and carrying a handbag walks away from the car along the roadway because there is no sidewalk, keeping close to the wall.", "hazard_reasoning": "There is a pedestrian wearing a red t-shirt and carrying a handbag, walking on the left side of the road, away from the ego car, because there is no sidewalk. The driver should carefully manoeuvre around the pedestrian to avoid a collision in the narrow street."}
{"id": "train_06885", "split": "train", "clip_key": "titan_clip_616_000126_movie", "source": {"subset": "titan", "scenario": "clip_616", "frame": "000126"}, "frames": ["titan_clip_616_000126_movie_t-3.jpg", "titan_clip_616_000126_movie_t-2.jpg", "titan_clip_616_000126_movie_t-1.jpg", "titan_clip_616_000126_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with no centerline stretches ahead through a small intersection, the pavement smooth and traffic light. In the continuation of the road ahead, a cyclist in black pants and a white shirt rides in the middle of the lane toward the ego vehicle, directly opposing the ego's path and constraining the approach. A few pedestrians linger near shop entrances on both sidewalks, staying off the roadway. A one-way sign and a corner convex mirror are posted on the right at the intersection, while curbside shop boards slightly narrow the usable width.", "hazard_reasoning": "A cyclist, wearing black pants and a white shirt, is cycling in the middle of the ego lane, toward the ego car. The cyclist occupies your driving lane and is approaching your vehicle directly, so you should slow down to maintain a safe distance and prevent a collision."}
{"id": "train_06886", "split": "train", "clip_key": "titan_clip_1004_000516_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1004_000516_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1004_000516_movie_t-3_augB1.jpg", "titan_clip_1004_000516_movie_t-2_augB1.jpg", "titan_clip_1004_000516_movie_t-1_augB1.jpg", "titan_clip_1004_000516_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with brick paving forms a single undivided lane in good condition, and traffic is very light. Ahead in the middle of the road, a pedestrian wearing black pants and carrying a backpack walks away from the ego car along the center, remaining in the vehicle's path and likely dictating its pace. On the right, a white van is stopped at the curb, stationary and narrowing the lane. Along the left sidewalk, two people with umbrellas walk parallel to traffic near the curb without stepping into the roadway. No notable signals or posted speeds are visible, and no other moving vehicles appear.", "hazard_reasoning": "There is a pedestrian wearing black pants, carrying a backpack, walking in the middle of the road, away from the ego car. The driver should slow down because the pedestrian's position in the travel lane creates a high risk of collision and requires extra caution."}
{"id": "train_06887", "split": "train", "clip_key": "2020-0220-102630_087886_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "087886"}, "frames": ["2020-0220-102630_087886_movie_t-3.jpg", "2020-0220-102630_087886_movie_t-2.jpg", "2020-0220-102630_087886_movie_t-1.jpg", "2020-0220-102630_087886_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with mid-rise buildings forms a two-lane same-direction road, bounded by a metal fence median on the right and a hedge-lined curb on the left; the pavement is smooth and traffic is light with steady movement. A silver car ahead in the ego lane cruises at a constant speed, setting the ego vehicle's pace. Farther ahead in the same lane, a white car continues steadily with a clear gap. On the left sidewalk, a cyclist with pedestrians stands near the curb by a building but remains off the roadway.", "hazard_reasoning": "There are no immediate hazards detected given the clear road conditions and absence of obstacles or vulnerable road users."}
{"id": "train_06888", "split": "train", "clip_key": "2020-0221-115122_030605_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "030605"}, "frames": ["2020-0221-115122_030605_movie_t-3.jpg", "2020-0221-115122_030605_movie_t-2.jpg", "2020-0221-115122_030605_movie_t-1.jpg", "2020-0221-115122_030605_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multilane arterial beneath an elevated expressway approaches a crosswalked intersection; the pavement is dry and smooth, and traffic is moderate and slowing into a queue. A white hatchback ahead in the ego lane slows because of congestion ahead, setting the pace for the ego car. To the right, a black minivan in the adjacent same-direction lane creeps forward beside the ego lane, reducing room to merge. On the left sidewalk near the junction, several pedestrians and a cyclist wait at the corner without entering the road. Blue directional signs hang overhead.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should follow the vehicle ahead to maintain a safe distance and adapt to the slowing traffic."}
{"id": "train_06889", "split": "train", "clip_key": "titan_clip_742_000186_movie", "source": {"subset": "titan", "scenario": "clip_742", "frame": "000186"}, "frames": ["titan_clip_742_000186_movie_t-3.jpg", "titan_clip_742_000186_movie_t-2.jpg", "titan_clip_742_000186_movie_t-1.jpg", "titan_clip_742_000186_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with no centerline runs between close buildings; the pavement looks smooth and traffic is light as the ego vehicle proceeds along the left side. Ahead on the left, a white utility bucket truck is parked with outriggers deployed, occupying part of the ego lane and constraining the vehicle's pace. On the right sidewalk near the truck, a man in a blue uniform with a white helmet waits at the curb to cross to the left despite the absence of a marked crosswalk and may step into the narrowed lane. No other moving vehicles are visible.", "hazard_reasoning": "There is a man wearing a blue uniform, with a white helmet, waiting to cross from the right side of the road to the left side, because there is no crosswalk. The driver should stop to allow the pedestrian to cross safely in the absence of a marked crosswalk, considering the obstructed visibility due to the parked truck."}
{"id": "train_06890", "split": "train", "clip_key": "2020-0129-105040_060762_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "060762"}, "frames": ["2020-0129-105040_060762_movie_t-3.jpg", "2020-0129-105040_060762_movie_t-2.jpg", "2020-0129-105040_060762_movie_t-1.jpg", "2020-0129-105040_060762_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban shopping street with a narrow two-way carriageway runs straight ahead; it appears single lane each direction with red edge bands, smooth pavement, and light traffic. Ahead to the right, a silver van in the oncoming lane creeps or pauses near the curb, squeezing the available width. Farther ahead in the center, a cyclist rides toward the ego vehicle along the oncoming path and is likely to pass close. On the left edge near the ego, a pedestrian wearing a black jacket and black pants walks toward the ego car along the roadside and could drift into the lane. A worker on a ladder at the right curb and parked bicycles add roadside clutter.", "hazard_reasoning": "There is a pedestrian wearing a black jacket and black pants, walking along the left side of the road, toward the ego car. Since the pedestrian may step into the lane unexpectedly, the driver should be aware to anticipate their movement and prevent a collision."}
{"id": "train_06891", "split": "train", "clip_key": "titan_clip_192_000240_movie", "source": {"subset": "titan", "scenario": "clip_192", "frame": "000240"}, "frames": ["titan_clip_192_000240_movie_t-3.jpg", "titan_clip_192_000240_movie_t-2.jpg", "titan_clip_192_000240_movie_t-1.jpg", "titan_clip_192_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban back street with a single unmarked lane runs straight between buildings and a fence, with smooth pavement and no divider; traffic is light with no vehicles visible. Ahead on the right edge of the carriageway, a pedestrian in black pants and a black shirt stands within the ego lane facing to the right, close to the building frontage, and may enter the path. Farther ahead near the center of the lane, another pedestrian walks away from the camera along the street, occupying the travel path and reducing available space. No traffic signals or posted speeds are visible, and there are no parked vehicles or other obstacles in the lane.", "hazard_reasoning": "There is a pedestrian in black pants and a black shirt, standing on the right side of the road, and facing to the right, in the ego lane. The driver should manoeuvre carefully to avoid colliding with the pedestrian positioned in the driving lane."}
{"id": "train_06892", "split": "train", "clip_key": "2020-0203-114632_038577_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "038577"}, "frames": ["2020-0203-114632_038577_movie_t-3.jpg", "2020-0203-114632_038577_movie_t-2.jpg", "2020-0203-114632_038577_movie_t-1.jpg", "2020-0203-114632_038577_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with two lanes in each direction and only painted separation lies ahead, the pavement dry and smooth, and traffic light and flowing steadily. A white sedan ahead in the ego lane continues straight at a steady pace, setting the speed. A silver van alongside on the left begins moving right to merge into the ego lane because construction work ahead narrows its lane and it may enter the ego path. A light blue van is parked at the left curb near the camera and remains stationary. Oncoming vehicles pass in the far-right opposing lanes without affecting the ego lane.", "hazard_reasoning": "There is a silver van lane changing from the left lane to the ego lane, because of construction work ahead. Slow down to anticipate the merging vehicle and maintain a safe following distance."}
{"id": "train_06893", "split": "train", "clip_key": "2020-0210-155354_005309_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "005309"}, "frames": ["2020-0210-155354_005309_movie_t-3.jpg", "2020-0210-155354_005309_movie_t-2.jpg", "2020-0210-155354_005309_movie_t-1.jpg", "2020-0210-155354_005309_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A busy urban two-lane road with one lane each way approaches a low railway overpass; the pavement looks sound and traffic is heavy and slow near the bridge. There is no median, only a center line and sidewalk railings, and flow is stop-and-go. A white SUV directly ahead in the ego lane is stopped because of congestion ahead, holding the ego car. Farther ahead under the overpass, a white van in the same direction creeps forward with the queue, keeping the lane blocked. In the opposing lane to the right, a silver sedan approaches steadily but remains in its lane. Pedestrians line both sidewalks behind guardrails. Overhead clearance signs and a striped barrier mark the underpass.", "hazard_reasoning": "There is a white SUV stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. You should stop to avoid a rear-end collision with the halted vehicle ahead."}
{"id": "train_06894", "split": "train", "clip_key": "titan_clip_1187_000384_movie", "source": {"subset": "titan", "scenario": "clip_1187", "frame": "000384"}, "frames": ["titan_clip_1187_000384_movie_t-3.jpg", "titan_clip_1187_000384_movie_t-2.jpg", "titan_clip_1187_000384_movie_t-1.jpg", "titan_clip_1187_000384_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian stepping onto street", "environment_perception": "An urban commercial back street with a single narrow shared lane and no median runs between shopfronts, the interlocking-brick pavement in good condition and vehicle traffic very light. Two pedestrians on the near right walk ahead along the curb within the lane, slowing the available pace for the ego vehicle. Farther ahead on the right, a pedestrian in a blue dress with a backpack walks away from the ego car in the roadway because the sidewalk is obstructed by shop signs, remaining near the curb in the vehicle's path. Another pedestrian farther ahead near the center continues straight and occupies the lane space. Restaurant signboards and displays protrude from both sides, narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a blue dress, carrying a backpack, and walking on the right side of the road, away from the ego car, because the sidewalk is obstructed. The driver should be aware of this pedestrian stepping into the street due to the blocked sidewalk."}
{"id": "train_06895", "split": "train", "clip_key": "2020-0203-154554_074892_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "074892"}, "frames": ["2020-0203-154554_074892_movie_t-3.jpg", "2020-0203-154554_074892_movie_t-2.jpg", "2020-0203-154554_074892_movie_t-1.jpg", "2020-0203-154554_074892_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction and a right-side striped buffer runs straight between shops and a gas station, the pavement dry and traffic light. A red sedan ahead in the ego lane slows, constraining the ego vehicle's pace. A white van is slightly ahead along the left edge near the curb, moving slowly and close to the ego lane. Farther ahead a few same-direction vehicles continue with clear gaps, and the scene shows no immediate conflicting movements.", "hazard_reasoning": "There is a red sedan slowing in the ego-car lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_06896", "split": "train", "clip_key": "2020-0226-101332_042936_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "042936"}, "frames": ["2020-0226-101332_042936_movie_t-3.jpg", "2020-0226-101332_042936_movie_t-2.jpg", "2020-0226-101332_042936_movie_t-1.jpg", "2020-0226-101332_042936_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement runs under an elevated roadway, divided from oncoming lanes by a metal fence; traffic is heavy and mostly stopped at a signal. Ahead in the ego lane a white van is stopped with brake lights on because the light is red, holding the ego car. In the adjacent left lane, a line of taxis and cars waits and inches forward, parallel to the ego lane. Farther left, a black van stays alongside at low speed without merging toward the ego path. Beyond the fence, oncoming traffic moves separately. The overhead traffic light ahead shows red at the intersection.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to avoid a collision and comply with the red signal."}
{"id": "train_06897", "split": "train", "clip_key": "2020-0207-151349_092983_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "092983"}, "frames": ["2020-0207-151349_092983_movie_t-3.jpg", "2020-0207-151349_092983_movie_t-2.jpg", "2020-0207-151349_092983_movie_t-1.jpg", "2020-0207-151349_092983_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to maintain a safe distance.", "environment_perception": "An urban multi-lane arterial with metal fences along the edges has dry pavement and heavy stop-and-go traffic under strong sun glare. A gray truck directly ahead in the ego lane is stopped because congestion blocks the way. In the adjacent right lane, a large dump truck slightly ahead is also halted, limiting any chance to change lanes and obscuring the forward view. Farther right, a silver minivan pauses beside the ego vehicle in the same queue. Overhead gantry signs are visible ahead.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car because of traffic congestion ahead. The sudden stop indicates halted traffic and requires you to stop promptly to maintain a safe following distance and avoid a collision."}
{"id": "train_06898", "split": "train", "clip_key": "2020-0131-135401_008894_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008894"}, "frames": ["2020-0131-135401_008894_movie_t-3.jpg", "2020-0131-135401_008894_movie_t-2.jpg", "2020-0131-135401_008894_movie_t-1.jpg", "2020-0131-135401_008894_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one narrow lane each direction has no median and fair pavement, and traffic flows slowly due to a signal and roadside construction. A white box truck ahead in the ego lane is stopped at a red light, holding the ego vehicle. Pedestrians on the left sidewalk walk and wait near the curb by the intersection as the pedestrian signal shows green, remaining off the roadway. An oncoming car proceeds along the right-side lane farther ahead through the constricted section. Roadworks line the right edge with cones, a dump truck, and an excavator, narrowing the carriageway but staying outside the ego lane.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should slow down to maintain a safe distance and avoid a rear-end collision under these conditions."}
{"id": "train_06899", "split": "train", "clip_key": "2020-0226-101332_074436_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "074436"}, "frames": ["2020-0226-101332_074436_movie_t-3.jpg", "2020-0226-101332_074436_movie_t-2.jpg", "2020-0226-101332_074436_movie_t-1.jpg", "2020-0226-101332_074436_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of lane-changing van", "environment_perception": "An urban divided arterial with three same-direction lanes on the left runs past tall buildings; a metal fence separates oncoming traffic on the right, the pavement is smooth, and traffic is moderate. Ahead of the ego-car, a gray van changes from the ego lane into the left curbside lane in front of the ego vehicle. In that left lane, a motorcyclist rides slightly ahead and continues forward, close to the van's path, which narrows lateral space. Farther ahead in the center lane, several cars proceed at a steady pace, setting the flow. Along the far-left shoulder, a small delivery truck is stopped near the curb. A few traffic cones line the right edge by the median, but no signals or posted speeds are clearly visible.", "hazard_reasoning": "There is a gray van changing lanes, from the ego lane to the left lane, in front of the ego-car. The van may enter the path of the ego vehicle unexpectedly, so the driver should be prepared for potential lane intrusion and adjust speed accordingly."}
{"id": "train_06900", "split": "train", "clip_key": "2020-0212-102546_029312_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "029312"}, "frames": ["2020-0212-102546_029312_movie_t-3.jpg", "2020-0212-102546_029312_movie_t-2.jpg", "2020-0212-102546_029312_movie_t-1.jpg", "2020-0212-102546_029312_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with at least two same-direction lanes shows dry, well-kept pavement and moderate flow; no center median is clearly visible. A white van ahead in the ego lane moves away from the ego car and leads the lane. In the adjacent right lane, a small white truck farther ahead continues straight while a silver wagon nearer the ego car keeps pace, both staying within their lane. On the left sidewalk, a pedestrian walks along the curb without entering the roadway.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. The white van ahead could slow down unexpectedly, so maintain attention to avoid collision."}
{"id": "train_06901", "split": "train", "clip_key": "2020-0204-150838_064282_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "064282"}, "frames": ["2020-0204-150838_064282_movie_t-3.jpg", "2020-0204-150838_064282_movie_t-2.jpg", "2020-0204-150838_064282_movie_t-1.jpg", "2020-0204-150838_064282_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A suburban expressway ramp with a single lane is bounded by steel guardrails and an elevated structure on the right; the smooth pavement curves gently right and traffic is light with no opposing flow. A black truck directly ahead in the ego lane slows as it approaches the bend, constraining the ego vehicle's pace. No other road users are nearby, and there are no visible signals or unusual hazards beyond the narrow, barrier-lined lane.", "hazard_reasoning": "There is a black truck slowing in the ego lane, in front of the ego car. Slow down to maintain a safe following distance and avoid a sudden collision due to the truck's reduced speed."}
{"id": "train_06902", "split": "train", "clip_key": "2020-0131-135401_049558_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "049558"}, "frames": ["2020-0131-135401_049558_movie_t-3.jpg", "2020-0131-135401_049558_movie_t-2.jpg", "2020-0131-135401_049558_movie_t-1.jpg", "2020-0131-135401_049558_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two same-direction lanes, no median, and smooth reddish pavement carries heavy stop-and-go traffic. A white minivan directly ahead in the ego lane is stopped because of a long queue ahead, holding the ego vehicle at a standstill. In the adjacent right lane, several vans and cars are also stopped or creeping forward in a tightly packed line, matching the congestion and preventing an easy lane change. Farther ahead near an intersection, more vehicles cluster beneath overhead signs and traffic lights, sustaining the bottleneck. The left sidewalk is fenced and clear, and no unusual obstacles or hazards are visible.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The ego driver must stop to maintain a safe following distance and avoid a collision with the halted vehicle."}
{"id": "train_06903", "split": "train", "clip_key": "2020-0210-101957_068729_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_068729_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_068729_movie_t-3_augB1.jpg", "2020-0210-101957_068729_movie_t-2_augB1.jpg", "2020-0210-101957_068729_movie_t-1_augB1.jpg", "2020-0210-101957_068729_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban, narrow two-way street with buildings tight to the curbs has good pavement and slow, congested traffic. Ahead in the left ego lane, a white van slows and then creeps because of a queue, constraining the ego vehicle's pace. In the opposing right lane, a silver car and a large truck inch forward toward the camera, remaining in their lane and passing close. At the left edge near the crosswalk, a cyclist rides slowly along the curb toward the intersection without entering the roadway. A roadside sign posts a 30 km/h speed limit.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should reduce speed to maintain a safe following distance and adapt to the slowing traffic."}
{"id": "train_06904", "split": "train", "clip_key": "titan_clip_1033_000492_movie", "source": {"subset": "titan", "scenario": "clip_1033", "frame": "000492"}, "frames": ["titan_clip_1033_000492_movie_t-3.jpg", "titan_clip_1033_000492_movie_t-2.jpg", "titan_clip_1033_000492_movie_t-1.jpg", "titan_clip_1033_000492_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban residential two-way street with green curb lanes and dry, slightly worn pavement comes into view; traffic is light as the ego vehicle proceeds in the left lane past a roadside work area that narrows the carriageway. A pedestrian wearing a blue uniform stands on the left side of the road controlling the traffic, positioned beside the curb and watching the approach. Ahead in the same direction, a white work truck and another service vehicle are stopped along the right side behind orange cones, encroaching into the travel lane and constraining the ego vehicle's path. No oncoming vehicles are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue uniform, standing on the left side of the road, because they are controlling the traffic. The pedestrian is directing vehicles, so the driver should carefully manoeuvre around them to avoid collision."}
{"id": "train_06905", "split": "train", "clip_key": "titan_clip_110_000018_movie", "source": {"subset": "titan", "scenario": "clip_110", "frame": "000018"}, "frames": ["titan_clip_110_000018_movie_t-3.jpg", "titan_clip_110_000018_movie_t-2.jpg", "titan_clip_110_000018_movie_t-1.jpg", "titan_clip_110_000018_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked van", "environment_perception": "An urban commercial street with one narrow lane each way, no median, smooth pavement, and light traffic as the ego vehicle approaches a zebra-crosswalk intersection. A pedestrian from the left steps onto the crosswalk close ahead, prompting the ego vehicle to slow. Another pedestrian waits on the right curb by the crosswalk and may enter after the first passes. A small kei truck ahead in the ego lane moves slowly beyond the intersection, setting the pace. A black van is parked along the right side for unloading, narrowing the usable lane near the storefronts.", "hazard_reasoning": "There is a black van parked on the right side of the road because it is being unloaded. This parked van reduces the available lane width and may impede traffic flow, requiring you to manoeuvre around it carefully to avoid collisions."}
{"id": "train_06906", "split": "train", "clip_key": "2020-0218-151547_028731_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "028731"}, "frames": ["2020-0218-151547_028731_movie_t-3.jpg", "2020-0218-151547_028731_movie_t-2.jpg", "2020-0218-151547_028731_movie_t-1.jpg", "2020-0218-151547_028731_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the stopped vehicle", "environment_perception": "An urban arterial runs beneath an elevated structure with two same-direction lanes and a narrow bicycle lane at the left curb; the pavement is smooth and traffic is light and steady. A white hatchback directly ahead in the ego lane is stopped, briefly blocking the lane and constraining the ego car. In the adjacent right lane, a silver van slightly ahead proceeds straight and passes without merging. Farther ahead in the right lane, a small bus continues away in the same direction. Metal railings line the left sidewalk and a guardrail borders the right edge, and no prominent signals or signs appear in view.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car. The white hatchback ahead is stationary in your lane, requiring you to manoeuvre carefully to avoid collision."}
{"id": "train_06907", "split": "train", "clip_key": "2020-0205-152530_063761_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "063761"}, "frames": ["2020-0205-152530_063761_movie_t-3.jpg", "2020-0205-152530_063761_movie_t-2.jpg", "2020-0205-152530_063761_movie_t-1.jpg", "2020-0205-152530_063761_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban expressway segment under flyovers carries a two-lane same-direction roadway bordered by guardrails, with smooth pavement and slow, dense traffic. A white semitruck ahead in the ego lane is slowing while remaining some distance away, setting the pace for the ego vehicle. To its left, a blue container truck runs alongside in the neighboring lane at a similar slow speed, keeping the overtaking path blocked. Farther left near the edge, a small white kei truck advances slowly in a narrow side lane and could merge ahead of the blue truck.", "hazard_reasoning": "There is a white semitruck in the ego lane, slowing down, away from the ego car. Since it is slowing down, following it helps maintain a safe distance and avoid a collision."}
{"id": "train_06908", "split": "train", "clip_key": "titan_clip_920_000534_movie", "source": {"subset": "titan", "scenario": "clip_920", "frame": "000534"}, "frames": ["titan_clip_920_000534_movie_t-3.jpg", "titan_clip_920_000534_movie_t-2.jpg", "titan_clip_920_000534_movie_t-1.jpg", "titan_clip_920_000534_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the truck", "environment_perception": "A narrow urban two-way street with no centerline runs between mid-rise buildings, the pavement smooth and dry, and traffic light with no moving vehicles ahead. A white delivery truck is stopped ahead along the right curb on the oncoming side, encroaching slightly into the roadway and narrowing the path. A pedestrian wearing a cap, black pants, and a red T-shirt stands by the truck's door on the right as he gets into the truck, occupying the roadside space next to it. On the left, a pedestrian on the sidewalk walks toward the camera near the curb while remaining off the carriageway.", "hazard_reasoning": "There is a pedestrian wearing a cap, black pants, and a red t-shirt, standing at the right side of the road, because he is getting into the truck. The driver should manoeuvre around the truck to avoid hitting him."}
{"id": "train_06909", "split": "train", "clip_key": "2020-0225-145150_044684_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "044684"}, "frames": ["2020-0225-145150_044684_movie_t-3.jpg", "2020-0225-145150_044684_movie_t-2.jpg", "2020-0225-145150_044684_movie_t-1.jpg", "2020-0225-145150_044684_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road with smooth pavement and no visible median carries same-direction traffic that moves slowly and bunches into heavy congestion. Directly ahead in the ego lane, a blue mini van slows and creeps because of the jam ahead, constraining the ego vehicle's pace. In the adjacent middle lane, a large white box truck rolls forward slowly in line without merging. Farther left, a silver delivery truck advances at a similar slow speed, staying alongside and limiting opportunities to change lanes. A fence lines the curb on the right and buildings border the street, with no oncoming traffic visible.", "hazard_reasoning": "There is a blue van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the slowing vehicle and accommodate the congested traffic conditions."}
{"id": "train_06910", "split": "train", "clip_key": "2020-0203-114632_078376_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "078376"}, "frames": ["2020-0203-114632_078376_movie_t-3.jpg", "2020-0203-114632_078376_movie_t-2.jpg", "2020-0203-114632_078376_movie_t-1.jpg", "2020-0203-114632_078376_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with multiple lanes and no median unfolds ahead, the pavement appearing smooth and dry and traffic flowing at a moderate pace through a signalized intersection. A white van directly ahead in the ego lane continues straight under a green light, leading the ego vehicle. Slightly ahead to the right, a silver box truck in the adjacent same-direction lane proceeds through the intersection as well, pacing the van and limiting room to change lanes. On the right cross street, a dark car waits at the stop line near the crosswalk, positioned to enter the main road. The overhead traffic signal facing the ego direction shows green.", "hazard_reasoning": "There is a white van moving in the ego lane because of a green traffic light, in front of the ego car. You should follow the vehicle ahead at a safe distance to avoid abrupt stops and ensure smooth progression through the intersection."}
{"id": "train_06911", "split": "train", "clip_key": "2020-0214-102601_050937_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "050937"}, "frames": ["2020-0214-102601_050937_movie_t-3.jpg", "2020-0214-102601_050937_movie_t-2.jpg", "2020-0214-102601_050937_movie_t-1.jpg", "2020-0214-102601_050937_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs beneath an elevated expressway, with a right-side guardrail and smooth pavement; traffic is heavy and mostly stopped. Immediately ahead in the ego lane, a blue car is stopped because of congestion ahead, holding the ego vehicle. In the adjacent left lane, a tarp-covered small truck and several white cars queue and inch forward alongside, leaving little room to merge. Farther ahead in the same direction, a larger truck also waits in the line, keeping the pack compressed. No salient signals are visible, and there are no pedestrians or cyclists.", "hazard_reasoning": "There is a blue Sedan stopped in the ego lane because of traffic congestion ahead. The blue sedan is halted due to congestion up ahead, so you should stop to avoid a collision."}
{"id": "train_06912", "split": "train", "clip_key": "2020-0226-101332_035714_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "035714"}, "frames": ["2020-0226-101332_035714_movie_t-3.jpg", "2020-0226-101332_035714_movie_t-2.jpg", "2020-0226-101332_035714_movie_t-1.jpg", "2020-0226-101332_035714_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane road runs under an elevated structure with a right-side guardrail; the pavement is dry and same-direction traffic is heavy and slow. A black sedan directly ahead in the ego lane creeps forward and constrains the pace. To its left, a red sedan changes lanes from the left into the ego lane ahead, squeezing into the gap. On the far left, a large blue truck moves slowly alongside near the merging car.", "hazard_reasoning": "There is a red sedan lane changing into the ego lane from the left lane. The red sedan's maneuver may encroach on the ego-vehicle's path, requiring speed reduction to maintain a safe following distance and avoid a potential side collision."}
{"id": "train_06913", "split": "train", "clip_key": "2020-0218-151547_001513_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "001513"}, "frames": ["2020-0218-151547_001513_movie_t-3.jpg", "2020-0218-151547_001513_movie_t-2.jpg", "2020-0218-151547_001513_movie_t-1.jpg", "2020-0218-151547_001513_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "A dense urban arterial with one through lane in the ego direction runs beside a concrete median on the right and a narrow side lane on the left; the pavement is clean and traffic queues at an intersection. A silver hatchback directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. Ahead-left, a white delivery scooter in the adjacent narrow lane moves slowly forward past the queue while continuing straight, remaining separate from the ego lane. To the right, oncoming vehicles flow behind the median without interaction. Overhead traffic signals ahead display red for the ego approach.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, because of a red traffic light. The driver should stop immediately to avoid rear-ending the stopped vehicle at the red light."}
{"id": "train_06914", "split": "train", "clip_key": "2020-0220-102630_085761_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "085761"}, "frames": ["2020-0220-102630_085761_movie_t-3.jpg", "2020-0220-102630_085761_movie_t-2.jpg", "2020-0220-102630_085761_movie_t-1.jpg", "2020-0220-102630_085761_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with good pavement runs between mid-rise buildings, with a guardrail separating a parallel roadway on the right; traffic is heavy and slow-moving. A white van directly ahead in the ego lane accelerates from a stop as congestion ahead briefly moves, setting the ego vehicle's pace. A black hatchback alongside to the left creeps forward in its lane, staying slightly ahead and limiting any lane change. Farther ahead in the left lane, a box truck inches along in the queue, contributing to the slowdown. The right edge shows a chevron-marked taper beside the guardrail, and no signals or unusual signage are prominent.", "hazard_reasoning": "There is a white van accelerating from a stop in the ego lane, because of traffic congestion ahead. The van's stop-and-go movement in heavy traffic may require prompt reaction; the driver should start moving to maintain safe following distance and adapt to the flow."}
{"id": "train_06915", "split": "train", "clip_key": "titan_clip_1357_000558_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1357_000558_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1357_000558_movie_t-3_augB1.jpg", "titan_clip_1357_000558_movie_t-2_augB1.jpg", "titan_clip_1357_000558_movie_t-1_augB1.jpg", "titan_clip_1357_000558_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of crossing pedestrian", "environment_perception": "The scene shows a narrow urban street that curves gently left, with a single lane, bollards along both curbs, smooth pavement, and no visible motor traffic. A pedestrian wearing a white shirt and gray pants steps off the right sidewalk and begins crossing toward the left, directly entering the ego vehicle's path. Another person stands at the right curb near the bollards and waits close to the roadway, which may enter the lane. Several pedestrians walk along the left sidewalk ahead, continuing straight and staying off the road. The bend and closely spaced buildings limit sight distance further ahead.", "hazard_reasoning": "A pedestrian wearing a white shirt and gray pants is crossing the street from the right side. The driver should be cautious because the pedestrian is entering the roadway and may not be immediately visible, requiring a reduction in speed to avoid a potential collision."}
{"id": "train_06916", "split": "train", "clip_key": "titan_clip_1202_000480_movie", "source": {"subset": "titan", "scenario": "clip_1202", "frame": "000480"}, "frames": ["titan_clip_1202_000480_movie_t-3.jpg", "titan_clip_1202_000480_movie_t-2.jpg", "titan_clip_1202_000480_movie_t-1.jpg", "titan_clip_1202_000480_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban residential street forms a narrow two-way road without a median; the pavement looks dry and intact, and traffic is light with no moving vehicles. Ahead on the right edge, a pedestrian in a white T-shirt walks a bicycle toward the ego along the curb beside the sidewalk, slightly narrowing the travel space. On the right sidewalk by a utility pole, another person stands facing the road behind the guardrail. No other notable road users or traffic signals are visible, and buildings and railings sit close to the carriageway, creating tight clearances.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, walking their bicycle on the right side of the road, towards the ego car, because there is a sidewalk. The driver should manoeuvre carefully around the pedestrian as they occupy the lane and may change direction unexpectedly."}
{"id": "train_06917", "split": "train", "clip_key": "titan_clip_319_000270_movie", "source": {"subset": "titan", "scenario": "clip_319", "frame": "000270"}, "frames": ["titan_clip_319_000270_movie_t-3.jpg", "titan_clip_319_000270_movie_t-2.jpg", "titan_clip_319_000270_movie_t-1.jpg", "titan_clip_319_000270_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban commercial street with one narrow lane in each direction and curbside parking, smooth pavement, and slow flow due to delivery activity. A white box truck ahead in the ego lane is stopped with its rear open while unloading, restricting the ego vehicle's progress. A small covered truck sits along the left edge beside the ego vehicle, slightly encroaching into the lane and narrowing the passage. A worker stands at the rear of the unloading truck in the lane, handling goods close to the ego path. Pedestrians on the right sidewalk walk past storefronts, one near the curb but remaining off the roadway. A side street intersects just ahead.", "hazard_reasoning": "There is a white truck parked on the left side of the road because it is unloading. The parked truck partially blocks the lane and obscures visibility of oncoming traffic, so you should manoeuvre carefully around it to avoid a collision."}
{"id": "train_06918", "split": "train", "clip_key": "2020-0220-151845_055280_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "055280"}, "frames": ["2020-0220-151845_055280_movie_t-3.jpg", "2020-0220-151845_055280_movie_t-2.jpg", "2020-0220-151845_055280_movie_t-1.jpg", "2020-0220-151845_055280_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban road runs under an elevated structure with two same-direction lanes, a concrete barrier on the left, and smooth pavement; traffic is heavy and queueing. Directly ahead in the ego lane, a red flatbed truck with a yellow-tarped load is stopped because of congestion, blocking the ego car's path. In the adjacent right lane, a black sedan and a silver minivan stand or creep forward alongside, constraining any lane change. Farther ahead in the right lane, more cars queue beneath the overpass, keeping the flow slow. A blue overhead direction sign is visible ahead.", "hazard_reasoning": "There is a red truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision due to the sudden halt in traffic."}
{"id": "train_06919", "split": "train", "clip_key": "titan_clip_1377_000528_movie", "source": {"subset": "titan", "scenario": "clip_1377", "frame": "000528"}, "frames": ["titan_clip_1377_000528_movie_t-3.jpg", "titan_clip_1377_000528_movie_t-2.jpg", "titan_clip_1377_000528_movie_t-1.jpg", "titan_clip_1377_000528_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around her", "environment_perception": "An urban neighborhood street with a single narrow lane and no median appears, the pavement is smooth and traffic is light. A woman in a blue shirt and black pants carrying a handbag walks toward the ego-vehicle from the left side within the ego lane near a parked van, encroaching on the path and constraining pace. A white van is stopped along the left curb partially in the lane, narrowing the available space. Far ahead, a small white van in the same direction proceeds along the street. A blue straight-ahead traffic sign stands on the right, and bicycles and scooters are parked at the right edge.", "hazard_reasoning": "There is a woman wearing a blue shirt, black pants, and carrying a handbag, walking towards the ego-car, on the left side of the road, in the ego lane. The driver should carefully manoeuvre around her to avoid a collision since she is entering the vehicle's path."}
{"id": "train_06920", "split": "train", "clip_key": "2020-0131-103016_003259_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "003259"}, "frames": ["2020-0131-103016_003259_movie_t-3.jpg", "2020-0131-103016_003259_movie_t-2.jpg", "2020-0131-103016_003259_movie_t-1.jpg", "2020-0131-103016_003259_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the sedan merging ahead", "environment_perception": "An urban arterial runs under an elevated expressway, with three same-direction lanes, a right-lane taper, smooth pavement, and moderate traffic, bounded by a left curb and guardrail and a right-side fence. Directly ahead, a white sedan from the right lane cuts in front of the ego car and merges into the ego lane, taking the available gap. Farther ahead in the same lane, a small white van proceeds steadily and constrains the pace. To the right, other vehicles in the ending lane drift left toward the ego lane as the chevron markings start.", "hazard_reasoning": "There is a white sedan cutting in front of the ego car from the right lane. This sudden cut-in can reduce your available reaction time, so you should be aware of the merging sedan."}
{"id": "train_06921", "split": "train", "clip_key": "2020-0206-101736_017155_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "017155"}, "frames": ["2020-0206-101736_017155_movie_t-3.jpg", "2020-0206-101736_017155_movie_t-2.jpg", "2020-0206-101736_017155_movie_t-1.jpg", "2020-0206-101736_017155_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes beside a fenced, planted median has smooth pavement and moderate, steady traffic. A white pickup truck directly ahead in the ego lane continues straight under green signals and sets the ego vehicle's pace. In the adjacent left lane, a black taxi slightly to the side and rear travels parallel without merging into the ego path. Farther ahead in the left lane, a white van proceeds toward the intersection at a similar pace. Overhead traffic lights show green, and the median separates oncoming traffic on the far side.", "hazard_reasoning": "There is a white pickup truck driving in the ego lane, in front of the ego car, because of green traffic lights. The green signal indicates the vehicle ahead is moving, so the driver should start moving to maintain safe traffic flow."}
{"id": "train_06922", "split": "train", "clip_key": "titan_clip_593_000198_movie", "source": {"subset": "titan", "scenario": "clip_593", "frame": "000198"}, "frames": ["titan_clip_593_000198_movie_t-3.jpg", "titan_clip_593_000198_movie_t-2.jpg", "titan_clip_593_000198_movie_t-1.jpg", "titan_clip_593_000198_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked vehicle", "environment_perception": "An urban two-way street with a single narrow lane each direction and no median stretches ahead on worn but dry pavement, and traffic is light with no oncoming vehicles passing. A white minivan ahead in the ego lane moves slowly and sets the pace. On the right side, a gray vehicle is parked along the curb, narrowing the opposing lane but not blocking the ego lane. A pedestrian on the right sidewalk stands near the curb by a storefront, close to the roadway but not entering it. Several other vehicles remain parked off the roadway to the left.", "hazard_reasoning": "There is a gray vehicle parked on the right side of the road. Parked vehicles can encroach on driving space or suddenly obstruct the lane, so you should be aware of parked vehicles to maintain safe clearance."}
{"id": "train_06923", "split": "train", "clip_key": "2020-0220-102630_010876_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "010876"}, "frames": ["2020-0220-102630_010876_movie_t-3.jpg", "2020-0220-102630_010876_movie_t-2.jpg", "2020-0220-102630_010876_movie_t-1.jpg", "2020-0220-102630_010876_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between midrise buildings; the asphalt is dry and smooth, and traffic is moderate but bunches into a slow queue ahead. A gray sedan directly ahead in the ego lane is stopped in congestion, holding the ego car. Farther ahead in the same lane a large box truck waits in the line, contributing to the slowdown. In the right adjacent lane a white truck continues slowly alongside without merging, moving past portions of the queue. A metal guardrail lines the right edge of the roadway, and a construction-clad building with temporary fencing occupies the left sidewalk but does not intrude into the carriageway.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The stopped vehicle ahead due to congestion requires the driver to stop to avoid a rear-end collision under these conditions."}
{"id": "train_06924", "split": "train", "clip_key": "titan_clip_65_000288_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_65_000288_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_65_000288_movie_t-3_augB1.jpg", "titan_clip_65_000288_movie_t-2_augB1.jpg", "titan_clip_65_000288_movie_t-1_augB1.jpg", "titan_clip_65_000288_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow", "environment_perception": "A narrow urban two-way street with a single lane in each direction has smooth pavement and light traffic, but the flow slows where vehicles are stopped along the curb. A white van is stopped ahead on the left, encroaching into the ego lane and constraining the path. A pedestrian wearing brown pants runs across in front of the ego car from the left, detouring around the parked vehicle. Another pedestrian ahead near the centerline walks away from the camera as they pass the van and may remain in the lane. A triangular yield sign is visible on the left. A white sedan stands parked tight to the right curb along with scattered equipment, further narrowing the roadway and creating a tight passage.", "hazard_reasoning": "There is a pedestrian wearing brown pants, running in front of the ego car, from the left side, because of the parked vehicle. The pedestrian may enter your path unexpectedly due to the obstruction, so you must slow down to avoid a collision."}
{"id": "train_06925", "split": "train", "clip_key": "titan_clip_1338_000030_movie", "source": {"subset": "titan", "scenario": "clip_1338", "frame": "000030"}, "frames": ["titan_clip_1338_000030_movie_t-3.jpg", "titan_clip_1338_000030_movie_t-2.jpg", "titan_clip_1338_000030_movie_t-1.jpg", "titan_clip_1338_000030_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban neighborhood street scene shows the ego car approaching a narrow two-way side street with one lane each way and no median; the pavement is smooth and traffic is light with no moving vehicles. Ahead, a pedestrian wearing a gray T-shirt walks away on the left side of the road beyond the zebra crossing, moving along the ego vehicle's projected path. At the near-left corner by a shop, a woman stands beside parked bicycles at the curb, waiting near the crosswalk and may step out. On the right sidewalk near a tree, another person waits by the crosswalk. A pedestrian crossing sign is visible on the right, and bicycles are parked along the left curb.", "hazard_reasoning": "There is a pedestrian wearing a gray T-shirt and walking on the left side of the road, away from the ego car. Slow down to ensure you can stop safely if the pedestrian unexpectedly crosses into your path."}
{"id": "train_06926", "split": "train", "clip_key": "2020-0207-101955_082795_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "082795"}, "frames": ["2020-0207-101955_082795_movie_t-3.jpg", "2020-0207-101955_082795_movie_t-2.jpg", "2020-0207-101955_082795_movie_t-1.jpg", "2020-0207-101955_082795_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "A suburban divided road with two same-direction lanes runs beside a noise barrier on the left and a guardrail median on the right; the pavement looks smooth and traffic is light. A blue truck is stopped directly ahead in the ego lane, obstructing the path. A taller white box truck sits just beyond it in the same lane, also stopped and keeping the queue in place. No salient signals or signs are visible, and no other road users approach.", "hazard_reasoning": "There is a blue truck stopped in front of the ego car, in the ego lane. The stationary truck obstructs the lane ahead and requires the driver to stop to avoid collision."}
{"id": "train_06927", "split": "train", "clip_key": "2020-0226-101332_035850_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "035850"}, "frames": ["2020-0226-101332_035850_movie_t-3.jpg", "2020-0226-101332_035850_movie_t-2.jpg", "2020-0226-101332_035850_movie_t-1.jpg", "2020-0226-101332_035850_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging truck", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes, a right-side guardrail, and smooth dry pavement; traffic is slow and bunched. On the left, a large red-and-green truck slightly ahead signals right and begins edging into the ego lane, indicating an imminent lane change. Directly ahead in the ego lane, a red taxi creeps forward and occasionally brakes, setting the ego vehicle's pace. In the adjacent right lane ahead, a black SUV moves slowly near the barrier and remains in its lane. A roadside sign for Berth B appears on the right by an access ramp.", "hazard_reasoning": "There is a red and green truck signaling to change lanes from the left lane to the ego-car lane. The truck's intended merge into the ego-vehicle's lane requires the driver to be aware of this lane change to prevent a possible collision."}
{"id": "train_06928", "split": "train", "clip_key": "2020-0205-103411_000659_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-103411_000659_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-103411_000659_movie_t-3_augB1.jpg", "2020-0205-103411_000659_movie_t-2_augB1.jpg", "2020-0205-103411_000659_movie_t-1_augB1.jpg", "2020-0205-103411_000659_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "An urban intersection on a two-way road with a single left-hand lane in the ego direction curves right beside construction hoarding and cones; the pavement is smooth and traffic is moderate but briefly halted. A black sedan directly ahead in the ego lane is stopped for pedestrians in the crosswalk, constraining the ego car's pace. Ahead-right, a red taxi in the same direction also waits near the crosswalk, queued behind the stopped traffic. Several pedestrians cross from right to left in front of the queue, keeping vehicles paused, while metal railings and work-zone barriers tighten the left margin.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car because of pedestrians walking in a crosswalk. The driver should stop immediately to avoid hitting the stopped vehicle and ensure pedestrian safety."}
{"id": "train_06929", "split": "train", "clip_key": "2020-0204-103442_051353_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "051353"}, "frames": ["2020-0204-103442_051353_movie_t-3.jpg", "2020-0204-103442_051353_movie_t-2.jpg", "2020-0204-103442_051353_movie_t-1.jpg", "2020-0204-103442_051353_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban intersection in a dense city setting has smooth pavement and multiple lanes in each direction; traffic appears moderate as the road curves gently right. The ego vehicle travels in the left lane. A gray van ahead in the ego lane drives away from the camera, steadily opening the gap. In the adjacent right lane slightly ahead, a large flatbed truck continues straight through the junction while maintaining its lane. At the left corner, several pedestrians wait by the crosswalk on the sidewalk. Overhead signals control the intersection, and a posted 40 sign and a straight-ahead mandatory arrow are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06930", "split": "train", "clip_key": "titan_clip_295_000078_movie", "source": {"subset": "titan", "scenario": "clip_295", "frame": "000078"}, "frames": ["titan_clip_295_000078_movie_t-3.jpg", "titan_clip_295_000078_movie_t-2.jpg", "titan_clip_295_000078_movie_t-1.jpg", "titan_clip_295_000078_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban residential street without a centerline runs between closely spaced buildings; the pavement looks smooth and dry and there is no moving traffic. Ahead on the left, a pedestrian in a gray T-shirt stands at the road edge while talking to another person, occupying part of the lane and reducing passing space. The other person, wearing a striped shirt, waits by a doorway on the left and stays stationary during the conversation. On the right, a white car is parked inside an open garage, and several bicycles and some cones sit along the curbs, making the corridor feel tight.", "hazard_reasoning": "There is a pedestrian wearing a gray T-shirt and standing on the left side of the road, because she is talking to another person. The pedestrian may step onto the roadway unexpectedly while engaged in conversation, so the driver should manoeuvre carefully to avoid a potential collision."}
{"id": "train_06931", "split": "train", "clip_key": "titan_clip_523_000480_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_523_000480_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_523_000480_movie_t-3_augB1.jpg", "titan_clip_523_000480_movie_t-2_augB1.jpg", "titan_clip_523_000480_movie_t-1_augB1.jpg", "titan_clip_523_000480_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane each way has no divider, worn pavement, and light traffic. Directly ahead, a pedestrian wearing a white shirt and gray pants crosses in front of the car toward the left side of the street, constraining the car's movement. At the right edge, another pedestrian holding a light umbrella also moves left across the lane toward the same curb, prolonging the blockage. A blue one-way arrow sign on the corner points right into a side street. A black van is parked along the left curb ahead, reducing available space near the corner.", "hazard_reasoning": "A pedestrian wearing a white shirt with gray pants is crossing in front of the ego car to the left side of the street. Because the pedestrian is entering the vehicle's path, the driver must stop to prevent a collision."}
{"id": "train_06932", "split": "train", "clip_key": "titan_clip_965_000072_movie", "source": {"subset": "titan", "scenario": "clip_965", "frame": "000072"}, "frames": ["titan_clip_965_000072_movie_t-3.jpg", "titan_clip_965_000072_movie_t-2.jpg", "titan_clip_965_000072_movie_t-1.jpg", "titan_clip_965_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian on roadside", "environment_perception": "An urban setting with tall buildings lines a narrow two-way road without a median; the pavement looks smooth and traffic is light as the ego vehicle continues in the left lane past curbside stops. A white car ahead in the same direction moves steadily toward a distant junction, setting the pace. On the left sidewalk near the curb, a pedestrian in a white T-shirt looks at a phone and stands at the edge, and may step into the ego lane. A large white van is stopped along the right edge close to the travel lane, reducing lateral clearance as the ego passes. Another vehicle is partially visible on the far left, stopped at the curb and not entering traffic.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and looking into their phone, standing at the left side of the road. The pedestrian is distracted and may step into the roadway unexpectedly, so the driver should remain vigilant and reduce speed to avoid a potential collision."}
{"id": "train_06933", "split": "train", "clip_key": "titan_clip_1282_000192_movie", "source": {"subset": "titan", "scenario": "clip_1282", "frame": "000192"}, "frames": ["titan_clip_1282_000192_movie_t-3.jpg", "titan_clip_1282_000192_movie_t-2.jpg", "titan_clip_1282_000192_movie_t-1.jpg", "titan_clip_1282_000192_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban commercial street with shops on both sides lacks a median or sidewalks, and the smooth pavement carries very light vehicular traffic. On the left edge ahead, three men in white shirts and dark pants walk away from the ego-vehicle along the roadway because there is no sidewalk, occupying the margin of the travel lane near the ego path. In the center-right further ahead, an adult and a child also walk away in the lane, keeping a steady pace directly in front of the vehicle's line of travel. Farther ahead, a few more pedestrians mill about near the middle of the street, loosely dispersing along the path. Blue traffic cones and storefront displays encroach from the right, slightly narrowing the usable roadway.", "hazard_reasoning": "There are three men wearing black pants and white shirts, and walking away from the ego car, on the left side of the road, because there is no sidewalk. The driver should carefully manoeuvre around them to avoid a collision since they are walking on the roadway in the vehicle's path."}
{"id": "train_06934", "split": "train", "clip_key": "titan_clip_694_000462_movie", "source": {"subset": "titan", "scenario": "clip_694", "frame": "000462"}, "frames": ["titan_clip_694_000462_movie_t-3.jpg", "titan_clip_694_000462_movie_t-2.jpg", "titan_clip_694_000462_movie_t-1.jpg", "titan_clip_694_000462_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrians crossing ahead.", "environment_perception": "A narrow two-way urban side street with no center line runs between low-rise buildings, the pavement dry and intact, and traffic is very light with no vehicles moving as the ego car approaches a small junction ahead. Two pedestrians directly ahead cross the roadway from the right toward the left curb, one carrying a handbag, both in black tops and pants, and they walk through the ego vehicle's path, requiring it to wait. A third pedestrian in the distance near the junction on the right side walks across the side street and does not enter the ego lane. Temporary construction panels and materials line the right edge near the camera, narrowing the roadside space.", "hazard_reasoning": "There are two pedestrians, carrying a handbag, wearing a black t-shirt, black pants, and crossing the street in front of the ego car to the left side. The driver should yield because the pedestrians are crossing directly ahead and may enter the vehicle's path."}
{"id": "train_06935", "split": "train", "clip_key": "titan_clip_1087_000036_movie", "source": {"subset": "titan", "scenario": "clip_1087", "frame": "000036"}, "frames": ["titan_clip_1087_000036_movie_t-3.jpg", "titan_clip_1087_000036_movie_t-2.jpg", "titan_clip_1087_000036_movie_t-1.jpg", "titan_clip_1087_000036_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "manoeuvre around the pedestrian", "environment_perception": "An urban backstreet with a single narrow lane runs between close buildings; there is no median, the asphalt is smooth, and traffic is light with no cars visible. On the left edge close ahead, a pedestrian wearing a hat and blue dress carrying a handbag walks toward the ego vehicle along the roadway and may encroach into the travel path. Farther ahead on the right by the storefront, another pedestrian walks away along the curb, remaining out of the lane. Near the center distance, a person with a bicycle pauses at the roadside and could move into the lane. White roadside bollards line the right, and planter stones and shop entrances narrow the usable width.", "hazard_reasoning": "There is a pedestrian wearing a hat, a blue dress, and carrying a handbag, walking on the left side of the road, toward the ego car. The driver should manoeuvre carefully around the pedestrian to avoid collision."}
{"id": "train_06936", "split": "train", "clip_key": "titan_clip_1310_000132_movie", "source": {"subset": "titan", "scenario": "clip_1310", "frame": "000132"}, "frames": ["titan_clip_1310_000132_movie_t-3.jpg", "titan_clip_1310_000132_movie_t-2.jpg", "titan_clip_1310_000132_movie_t-1.jpg", "titan_clip_1310_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "A narrow urban residential street in Japan has no centerline or median, smooth pavement, and light traffic. Ahead in the ego lane a small box truck moves slowly uphill, maintaining a steady gap and modestly constraining the ego vehicle's pace. On the left edge mid-distance, two pedestrians in white shirts walk toward the ego vehicle along the roadside and remain close to the travel lane, so they may drift into the path. Parked cars in driveways on the left and a bicycle by the right curb narrow the usable width. Convex corner mirrors and a blue pedestrian sign are visible at the intersection, and a no-entry sign marks a right-side side street.", "hazard_reasoning": "There are two pedestrians wearing white shirts and walking on the left side of the road, toward the ego car. The driver should carefully manoeuvre around them to maintain a safe distance and avoid a potential collision."}
{"id": "train_06937", "split": "train", "clip_key": "2020-0220-102630_005832_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "005832"}, "frames": ["2020-0220-102630_005832_movie_t-3.jpg", "2020-0220-102630_005832_movie_t-2.jpg", "2020-0220-102630_005832_movie_t-1.jpg", "2020-0220-102630_005832_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of the white sedan", "environment_perception": "An urban multi-lane one-way road passes shops and large structures, with smooth pavement and light to moderate flow that bunches slightly near a junction. The ego vehicle travels in the center lane between a coned work zone on the left and a right-side barrier. A black van ahead in the same lane proceeds straight at a steady pace and sets the ego vehicle's speed. A white sedan ahead to the right signals and drifts left into the ego lane as traffic slows ahead, matching the caption. Farther ahead, another white car continues straight in the middle distance without changing lanes. A 40 speed-limit sign is posted on the left, and parked work trucks and cones narrow the left shoulder but do not block the lanes.", "hazard_reasoning": "There is a white sedan lane changing from the right lane to the ego lane, because of traffic congestion ahead. Since the sedan is merging unexpectedly, the driver should be cautious that it may cut in front."}
{"id": "train_06938", "split": "train", "clip_key": "titan_clip_1091_000516_movie", "source": {"subset": "titan", "scenario": "clip_1091", "frame": "000516"}, "frames": ["titan_clip_1091_000516_movie_t-3.jpg", "titan_clip_1091_000516_movie_t-2.jpg", "titan_clip_1091_000516_movie_t-1.jpg", "titan_clip_1091_000516_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the van carefully", "environment_perception": "An urban residential two-way street has a single narrow lane in each direction, no median, and smooth pavement; traffic is light as the road continues straight between close buildings. On the left ahead, a white van is parked in the ego lane, reducing the usable width. A bicyclist rides toward the camera near the center of the opposing lane, continuing straight and approaching the pinch point by the parked van. At the right edge close by, a pedestrian with an umbrella steps diagonally from the curb into the roadway near the ego lane. A convex mirror and several traffic cones stand by a side alley on the left.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane. The parked van obstructs the vehicle's path and requires the driver to manoeuvre around it to avoid a collision."}
{"id": "train_06939", "split": "train", "clip_key": "titan_clip_476_000240_movie", "source": {"subset": "titan", "scenario": "clip_476", "frame": "000240"}, "frames": ["titan_clip_476_000240_movie_t-3.jpg", "titan_clip_476_000240_movie_t-2.jpg", "titan_clip_476_000240_movie_t-1.jpg", "titan_clip_476_000240_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian on the left side.", "environment_perception": "A narrow urban shopping street with a single lane and no divider runs on a paver surface, lined by bollards and storefronts; traffic is light and steady. A silver microvan ahead in the ego lane continues forward at low speed, setting the pace for the ego vehicle. On the left by the curb, a pedestrian wearing a cap, black pants, and a white shirt waits to cross where no marked crosswalk is present and could step into the lane. On the right at the near edge of the sidewalk, another pedestrian stands close to the roadway outside a shop but does not move into traffic. Farther ahead on the right, a person walks along the bollards parallel to the road, remaining off the lane.", "hazard_reasoning": "There is a pedestrian wearing a cap, black pants, and a white shirt who is waiting to cross at the left side of the road, because there is no pedestrian crosswalk. The driver should be cautious since the pedestrian may step into the roadway unexpectedly without a designated crossing point."}
{"id": "train_06940", "split": "train", "clip_key": "titan_clip_1339_000372_movie", "source": {"subset": "titan", "scenario": "clip_1339", "frame": "000372"}, "frames": ["titan_clip_1339_000372_movie_t-3.jpg", "titan_clip_1339_000372_movie_t-2.jpg", "titan_clip_1339_000372_movie_t-1.jpg", "titan_clip_1339_000372_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban multi-lane street runs between tall buildings with smooth pavement and light same-direction traffic; there is no visible median. A pedestrian in a gray t-shirt and blue pants walks ahead on the left side of the roadway, moving away from the camera within the ego lane and briefly occupying the path, so the car must hold pace. To the right, a silver hatchback draws alongside in the adjacent lane and continues ahead, not affecting the ego vehicle. Farther ahead on the right, a white van waits near the curb in the same direction, forming a roadside obstruction. A bus stop sign stands along the left sidewalk and an elevated structure spans the road in the distance.", "hazard_reasoning": "There is a pedestrian wearing a gray t-shirt and blue pants, and walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to maintain safe distance and avoid potential collision."}
{"id": "train_06941", "split": "train", "clip_key": "titan_clip_693_000306_movie", "source": {"subset": "titan", "scenario": "clip_693", "frame": "000306"}, "frames": ["titan_clip_693_000306_movie_t-3.jpg", "titan_clip_693_000306_movie_t-2.jpg", "titan_clip_693_000306_movie_t-1.jpg", "titan_clip_693_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban local street with no marked centerline runs between shops, the asphalt smooth and traffic light with no moving vehicles. Two pedestrians on the left edge ahead, one in a black shirt and one in a brown dress, walk toward the ego vehicle along the curb and may enter the lane. Farther ahead a small group of pedestrians in the roadway and near the right sidewalk walks away down the street, intermittently occupying the travel space. Orange construction cones and barriers line the right curb, and several parked motorcycles at a shop entrance on the left narrow the passage.", "hazard_reasoning": "Two pedestrians wearing a black shirt and brown dress are walking along the left side of the lane, toward the ego car. The driver should slow down to maintain a safe distance and anticipate their movements."}
{"id": "train_06942", "split": "train", "clip_key": "2020-0225-102455_078163_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "078163"}, "frames": ["2020-0225-102455_078163_movie_t-3.jpg", "2020-0225-102455_078163_movie_t-2.jpg", "2020-0225-102455_078163_movie_t-1.jpg", "2020-0225-102455_078163_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial approaches a wide signalized intersection, divided by painted islands and red plastic posts; the asphalt is dry and traffic is moderate and slow. A white van directly ahead in the ego lane is stopped for a red light, setting the pace. To the right, a gray sedan in the adjacent lane waits at the line, slightly angled toward the junction but stationary beside the ego vehicle. Farther ahead in the crosswalk, pedestrians move right to left across the van's path, reinforcing the stop. Overhead signals show red for the ego direction and blue direction boards hang above.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver needs to stop to avoid colliding with the halted vehicle at the red light."}
{"id": "train_06943", "split": "train", "clip_key": "2020-0227-104226_036283_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-104226_036283_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-104226_036283_movie_t-3_augB1.jpg", "2020-0227-104226_036283_movie_t-2_augB1.jpg", "2020-0227-104226_036283_movie_t-1_augB1.jpg", "2020-0227-104226_036283_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with one lane per direction runs straight ahead, divided by a yellow centerline; the dry pavement looks smooth and traffic is moderate. A white box truck ahead in the ego lane slows and the ego car follows it, constraining pace. Several white vans are parked along the left curb near the ego, narrowing the usable lane and reducing lateral clearance. A white van approaches in the oncoming lane to the right and continues straight, separated by the centerline.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's reduced speed ahead may require the driver to adjust speed to maintain a safe following distance, so the driver should prepare to slow down under this situation."}
{"id": "train_06944", "split": "train", "clip_key": "titan_clip_1056_000504_movie", "source": {"subset": "titan", "scenario": "clip_1056", "frame": "000504"}, "frames": ["titan_clip_1056_000504_movie_t-3.jpg", "titan_clip_1056_000504_movie_t-2.jpg", "titan_clip_1056_000504_movie_t-1.jpg", "titan_clip_1056_000504_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban side street with a single narrow, undivided lane runs between office buildings; the asphalt is smooth and traffic is light. Ahead on the right, a pedestrian wearing a white shirt and black pants walks toward the ego vehicle along the roadway edge, approaching the ego's path. Farther ahead on the right curb, a silver minivan is stopped in a pull-off area, narrowing the usable lane. At the near right, a white car stands at the curb with its nose close to the travel lane beside the ego. A no-parking sign is visible on a pole to the left.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt walking towards the ego car on the right side of the road. The driver should carefully manoeuvre around the pedestrian because they may step into the vehicle's path at close proximity."}
{"id": "train_06945", "split": "train", "clip_key": "2020-0206-101736_061112_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "061112"}, "frames": ["2020-0206-101736_061112_movie_t-3.jpg", "2020-0206-101736_061112_movie_t-2.jpg", "2020-0206-101736_061112_movie_t-1.jpg", "2020-0206-101736_061112_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial with a guardrail along the right edge shows smooth pavement and heavy, mostly stopped traffic. Directly ahead, a light-colored kei van is halted in the ego lane due to congestion, holding the ego vehicle stationary. To the left, a silver van waits alongside, creeping only slightly with the queue. Farther ahead in the left lane, a loaded work truck idles, also constrained by the jam.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe following distance and avoid a collision with the stationary vehicle."}
{"id": "train_06946", "split": "train", "clip_key": "titan_clip_612_000546_movie", "source": {"subset": "titan", "scenario": "clip_612", "frame": "000546"}, "frames": ["titan_clip_612_000546_movie_t-3.jpg", "titan_clip_612_000546_movie_t-2.jpg", "titan_clip_612_000546_movie_t-1.jpg", "titan_clip_612_000546_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with a single shared lane and block-paved surface has no divider and very light, slow traffic. On the right side ahead, a cyclist in a blue shirt rides toward the ego vehicle along the curb and may pass close to its line. Two men ahead near the lane center walk away from the camera in the travel lane, effectively setting the pace. Another pedestrian keeps to the right edge beside the storefronts and moves in the same direction. Parked bicycles and shop displays along the right margin narrow the usable space.", "hazard_reasoning": "There is a cyclist wearing a blue shirt, cycling along the right side of the road, toward the ego car. The driver should slow down because the cyclist is approaching and may require extra space and reaction time to avoid a collision."}
{"id": "train_06947", "split": "train", "clip_key": "titan_clip_1086_000060_movie", "source": {"subset": "titan", "scenario": "clip_1086", "frame": "000060"}, "frames": ["titan_clip_1086_000060_movie_t-3.jpg", "titan_clip_1086_000060_movie_t-2.jpg", "titan_clip_1086_000060_movie_t-1.jpg", "titan_clip_1086_000060_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with no centerline or sidewalk runs between dense storefronts, the dry pavement in good condition and traffic light. Ahead on the right edge, a pedestrian in a blue shirt and white dress carries a handbag and holds an umbrella, walking along the road because there is no sidewalk and occupying part of the ego vehicle's path. No other moving vehicles are visible in the same or oncoming direction. A roadside utility pole and orange traffic cones on the right encroach into the carriageway, further narrowing the space near shop entrances.", "hazard_reasoning": "The pedestrian, in a blue shirt and white dress, with a handbag and an umbrella, is walking on the right side of the road because there is no sidewalk. The driver must manoeuvre carefully to avoid a collision with the pedestrian walking on the roadway."}
{"id": "train_06948", "split": "train", "clip_key": "2020-0226-140503_022209_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "022209"}, "frames": ["2020-0226-140503_022209_movie_t-3.jpg", "2020-0226-140503_022209_movie_t-2.jpg", "2020-0226-140503_022209_movie_t-1.jpg", "2020-0226-140503_022209_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A dense urban two-way street with one lane each way and a yellow centerline approaches a signalized crosswalk; the pavement is wet and traffic is light with no nearby vehicles. Ahead in the ego lane, a group of three pedestrians wearing white hats crosses from left to right at the zebra crossing, holding up the car. Slightly farther ahead to the right, an adult with an umbrella escorts two children across in the same direction, continuing through the vehicle's path. On the near left curb, another person with an umbrella waits at the crosswalk and could enter after them. The overhead traffic signal displays yellow, and a posted 40 sign is visible ahead.", "hazard_reasoning": "A group of three pedestrians wearing white hats is crossing at the pedestrian crosswalk to the right side of the road, because of the red light. The driver should stop immediately to yield to the crossing pedestrians and avoid a collision under the red signal."}
{"id": "train_06949", "split": "train", "clip_key": "titan_clip_1306_000282_movie", "source": {"subset": "titan", "scenario": "clip_1306", "frame": "000282"}, "frames": ["titan_clip_1306_000282_movie_t-3.jpg", "titan_clip_1306_000282_movie_t-2.jpg", "titan_clip_1306_000282_movie_t-1.jpg", "titan_clip_1306_000282_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban commercial street with a narrow single-lane roadway and no centerline is visible, the pavement dry and smooth; vehicular flow is light while many pedestrians share the road. A pedestrian carrying a handbag walks in the middle of the road ahead, moving away from the ego car and occupying its path. Several groups of pedestrians farther ahead drift and cross across the lane in both directions, constraining the ego vehicle's pace. A delivery truck stands on the left side ahead with its rear protruding into the lane, and a box lies on the roadway nearby, forming a partial obstruction. Traffic cones and storefront fixtures tighten the right edge.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking on the middle of the road, away from the ego car. The driver should slow down because the pedestrian is walking in the vehicle's path and poses a collision risk."}
{"id": "train_06950", "split": "train", "clip_key": "titan_clip_552_000234_movie", "source": {"subset": "titan", "scenario": "clip_552", "frame": "000234"}, "frames": ["titan_clip_552_000234_movie_t-3.jpg", "titan_clip_552_000234_movie_t-2.jpg", "titan_clip_552_000234_movie_t-1.jpg", "titan_clip_552_000234_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian in crosswalk.", "environment_perception": "In a dense urban shopping district, the ego vehicle approaches a narrow single-lane road with smooth asphalt and no median; vehicular flow is light while pedestrian activity is heavy around a zebra crossing. A pedestrian wearing a white shirt and striped pants crosses the crosswalk from right to left ahead, directly in the ego lane. A small white truck is farther ahead in the same lane, rolling slowly past the crossing and constraining the pace. Groups of pedestrians on both sidewalks step onto or wait at the crosswalk near the lane edges, with several likely to continue across in front of the vehicle. An overhead blue pedestrian-crossing sign marks the crossing.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and striped pants, crossing the street at a pedestrian crossing, from the right side to the left side. The pedestrian is moving into the vehicle's path at a marked crosswalk, so the driver must yield to avoid a collision."}
{"id": "train_06951", "split": "train", "clip_key": "2020-0220-102630_116691_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "116691"}, "frames": ["2020-0220-102630_116691_movie_t-3.jpg", "2020-0220-102630_116691_movie_t-2.jpg", "2020-0220-102630_116691_movie_t-1.jpg", "2020-0220-102630_116691_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction and a painted centerline stretches toward a signalized intersection; the pavement looks smooth and traffic is moderate. A black sedan directly ahead in the ego lane accelerates from near the crosswalk as the traffic light turns green, setting the ego-car's pace. Oncoming vehicles to the right proceed straight through their lane past the junction without deviating toward the ego path. A white van waits at the right-side side street beside the intersection, appearing poised to merge after the main flow clears. The overhead signal ahead shows green for the ego direction.", "hazard_reasoning": "There is a black sedan that is accelerating in front of the ego-car, in the ego-car lane, because the traffic light has turned green. Therefore, the driver should accelerate promptly to maintain safe following distance and clear the intersection under the green signal."}
{"id": "train_06952", "split": "train", "clip_key": "titan_clip_987_000324_movie", "source": {"subset": "titan", "scenario": "clip_987", "frame": "000324"}, "frames": ["titan_clip_987_000324_movie_t-3.jpg", "titan_clip_987_000324_movie_t-2.jpg", "titan_clip_987_000324_movie_t-1.jpg", "titan_clip_987_000324_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single narrow lane each direction curves right, with no median and generally smooth pavement; traffic appears light. Ahead in the ego lane, a cyclist wearing a white shirt and black pants rides near the middle of the road, moving away from the car and effectively setting the pace. Farther ahead to the right, another cyclist proceeds cautiously around a blue flatbed truck. The blue truck is stopped along the right curb, protruding into the roadway and creating a pinch point through the bend. A few pedestrians stand on the left sidewalk near a storefront, remaining clear of the lane.", "hazard_reasoning": "There is a cyclist wearing a white shirt and black pants, cycling in the middle of the road, away from the ego car. The cyclist's central position may lead to unpredictable movements, so the driver should slow down to maintain a safe distance."}
{"id": "train_06953", "split": "train", "clip_key": "2020-0203-114632_041702_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "041702"}, "frames": ["2020-0203-114632_041702_movie_t-3.jpg", "2020-0203-114632_041702_movie_t-2.jpg", "2020-0203-114632_041702_movie_t-1.jpg", "2020-0203-114632_041702_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial runs between mid-rise buildings, with one lane in the ego direction and two oncoming lanes separated by a chevroned painted median. The pavement is dry and smooth, and traffic moves at a moderate, steady flow. A gray van drives ahead in the ego lane, moving away from the ego car and pacing our movement. To the right beyond the median, a city bus approaches in the nearer oncoming lane, continuing straight. A black passenger car follows slightly behind the bus in the adjacent oncoming lane. Near the right curb, a white truck approaches toward the camera within its lane, not affecting the ego lane.", "hazard_reasoning": "There is a gray van driving in the ego lane away from the ego car. The gray van ahead may slow or change speed unexpectedly, so the driver should remain attentive and maintain a safe following distance."}
{"id": "train_06954", "split": "train", "clip_key": "2020-0131-135401_006182_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "006182"}, "frames": ["2020-0131-135401_006182_movie_t-3.jpg", "2020-0131-135401_006182_movie_t-2.jpg", "2020-0131-135401_006182_movie_t-1.jpg", "2020-0131-135401_006182_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the stopped truck", "environment_perception": "An urban two-way street with one narrow lane per direction and no median appears, the dry pavement in good condition and overall traffic light as strong sun glare comes from ahead right. A white box truck ahead in the ego lane is stopped and occupies the full lane, constraining the ego car's path. On the left sidewalk near the curb, a pedestrian walks toward the camera at a steady pace while remaining on the walkway, not entering the road. No oncoming vehicles are visible at this moment. An overhead circular sign displays 40.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The truck's sudden stop in the same lane poses a risk of rear-end collision, so the driver should stop promptly to maintain safety."}
{"id": "train_06955", "split": "train", "clip_key": "2020-0207-151349_010208_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "010208"}, "frames": ["2020-0207-151349_010208_movie_t-3.jpg", "2020-0207-151349_010208_movie_t-2.jpg", "2020-0207-151349_010208_movie_t-1.jpg", "2020-0207-151349_010208_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban street with mid-rise buildings lines a single left-side driving lane separated from the opposite carriageway by a low planted median; the pavement is dry and smooth and traffic is light with no notable changes. Ahead on the left edge, a cyclist wearing an orange jacket and a backpack rides away along the curb, sharing the ego lane and staying near the shoulder. Farther ahead the road is clear with no visible oncoming traffic or signals affecting movement, and no parked vehicles or obstacles encroach on the lane.", "hazard_reasoning": "There is a cyclist wearing an orange jacket, carrying a backpack, and cycling on the left side of the road, away from the ego car. The cyclist's position on the roadway requires the driver to carefully manoeuvre to avoid encroaching on their path."}
{"id": "train_06956", "split": "train", "clip_key": "titan_clip_642_000030_movie", "source": {"subset": "titan", "scenario": "clip_642", "frame": "000030"}, "frames": ["titan_clip_642_000030_movie_t-3.jpg", "titan_clip_642_000030_movie_t-2.jpg", "titan_clip_642_000030_movie_t-1.jpg", "titan_clip_642_000030_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of crossing pedestrian ahead", "environment_perception": "An urban neighborhood side street with a smooth, narrow two-way carriageway has light traffic as the ego vehicle approaches a cross intersection. A red stop sign on the right and the large STOP marking on the pavement are visible ahead. Along the right shoulder, a small truck is stopped with its bed open for unloading, encroaching slightly into the ego lane and constraining the approach. In front of it, a pedestrian wearing black pants pushes a handcart from the left curb to the right, crossing the roadway because the truck is being unloaded on the right shoulder and briefly occupying the ego lane. Another person stands at the left curb near storefront signs, waiting by the sidewalk.", "hazard_reasoning": "There is a pedestrian wearing black pants, pushing a handcart, and crossing the street, from the left to the right side, because of the truck being unloaded on the right shoulder. Because the unloading truck obstructs sight lines, the pedestrian may enter your path unexpectedly, so be aware of crossing pedestrian ahead."}
{"id": "train_06957", "split": "train", "clip_key": "2020-0226-140503_105672_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "105672"}, "frames": ["2020-0226-140503_105672_movie_t-3.jpg", "2020-0226-140503_105672_movie_t-2.jpg", "2020-0226-140503_105672_movie_t-1.jpg", "2020-0226-140503_105672_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with a low shrub median and smooth pavement has a single through lane in the ego direction and light traffic. A silver box truck directly ahead in the ego lane slows, constraining the ego car's pace. In the left-side service bay a small white van moves forward parallel to the lane and may merge into the ego path. On the opposite side of the median, an oncoming white car proceeds past in its lane without interaction.", "hazard_reasoning": "There is a silver truck slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe distance and avoid a potential rear-end collision."}
{"id": "train_06958", "split": "train", "clip_key": "titan_clip_462_000126_movie", "source": {"subset": "titan", "scenario": "clip_462", "frame": "000126"}, "frames": ["titan_clip_462_000126_movie_t-3.jpg", "titan_clip_462_000126_movie_t-2.jpg", "titan_clip_462_000126_movie_t-1.jpg", "titan_clip_462_000126_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with no centerline functions as a single shared lane; the pavement is dry and worn, and traffic is light with several vehicles stopped along the curbs. Ahead in the ego lane, a pedestrian carrying a handbag and umbrella crosses mid-block from right to left where there is no crosswalk, directly traversing the vehicle's path. Farther ahead on the right, a large box truck stands stopped partly in the roadway for loading, narrowing the available space and limiting passage. Additional parked vans sit along the left and right edges but remain stationary off the lane.", "hazard_reasoning": "There is a pedestrian carrying a handbag and umbrella, crossing the street in the middle of the road, from the right side to the left side, because there is no crosswalk. The driver should slow down to anticipate the pedestrian's movement and avoid a collision."}
{"id": "train_06959", "split": "train", "clip_key": "titan_clip_617_000042_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_617_000042_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_617_000042_movie_t-3_augB1.jpg", "titan_clip_617_000042_movie_t-2_augB1.jpg", "titan_clip_617_000042_movie_t-1_augB1.jpg", "titan_clip_617_000042_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "manoeuvre around the pedestrian", "environment_perception": "An urban narrow local street with a single undivided lane runs between shops, the pavement smooth and traffic light with no moving cars. On the right edge near the ego vehicle, a pedestrian wearing blue pants and a gray shirt walks toward the camera along the roadway, close to the lane and directly in the path. Farther ahead on the right, another pedestrian stands at the curb near a shuttered storefront, facing the street and remaining stationary. A blue sign with a left arrow hangs from a building. Parked bicycles and storefront fixtures line the right margin, reducing lateral clearance.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a gray shirt, walking on the right side of the road, toward the ego car. The pedestrian may step into the vehicle's path, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_06960", "split": "train", "clip_key": "titan_clip_1234_000048_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1234_000048_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1234_000048_movie_t-3_augB1.jpg", "titan_clip_1234_000048_movie_t-2_augB1.jpg", "titan_clip_1234_000048_movie_t-1_augB1.jpg", "titan_clip_1234_000048_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban side street climbs uphill with a single shared lane and no median; the worn pavement and curbside loading make traffic light but slow. Ahead in the lane, a small group of pedestrians walks uphill near the center, constraining the ego vehicle's pace. On the left edge, a pedestrian in a black shirt and pants carrying a bag walks toward the ego car and approaches the travel path. On the right ahead, a dark van is stopped with rear doors open while a worker crouches by the curb, partially narrowing the lane, and a white truck is parked near the camera along the right side.", "hazard_reasoning": "There is a male pedestrian wearing a black shirt, black pants, and carrying a bag, walking on the left side of the road, toward the ego car. Since the pedestrian is approaching the vehicle and may step onto the roadway, manoeuvre carefully to avoid collision."}
{"id": "train_06961", "split": "train", "clip_key": "titan_clip_1052_000288_movie", "source": {"subset": "titan", "scenario": "clip_1052", "frame": "000288"}, "frames": ["titan_clip_1052_000288_movie_t-3.jpg", "titan_clip_1052_000288_movie_t-2.jpg", "titan_clip_1052_000288_movie_t-1.jpg", "titan_clip_1052_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with one lane each way runs between closely spaced buildings, without a median and with patched pavement; traffic is light. A small truck ahead in the left-side ego lane stands still with its rear door open and boxes visible, constraining the ego vehicle's pace and blocking part of the lane. On the right edge, a pedestrian wearing black pants walks toward the ego car along the roadway, close to the curb and near the intended path. Farther ahead near the center, a man in a white shirt walks away in the lane, further limiting progress.", "hazard_reasoning": "There is a pedestrian wearing black pants, walking on the right side of the road, towards the ego car. The pedestrian is entering the vehicle's path, so the driver should manoeuvre carefully around them."}
{"id": "train_06962", "split": "train", "clip_key": "2020-0227-104226_102222_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "102222"}, "frames": ["2020-0227-104226_102222_movie_t-3.jpg", "2020-0227-104226_102222_movie_t-2.jpg", "2020-0227-104226_102222_movie_t-1.jpg", "2020-0227-104226_102222_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In daylight on an urban arterial, the ego vehicle proceeds on a three-lane same-direction road with smooth pavement, roadside barriers, and a planted strip on the right, and traffic flows at a moderate steady pace. A white box truck directly ahead in the ego lane drives away at a steady speed, effectively setting the ego car's pace. To the left, a silver hatchback travels alongside in the adjacent lane, continuing straight and limiting a leftward lane change. Farther ahead in the right lane, a small white van continues straight and gradually increases the gap while staying in its lane.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The truck obstructs the view of the road ahead, so maintain a safe following distance in case it brakes suddenly."}
{"id": "train_06963", "split": "train", "clip_key": "titan_clip_288_000576_movie", "source": {"subset": "titan", "scenario": "clip_288", "frame": "000576"}, "frames": ["titan_clip_288_000576_movie_t-3.jpg", "titan_clip_288_000576_movie_t-2.jpg", "titan_clip_288_000576_movie_t-1.jpg", "titan_clip_288_000576_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street lined with shops and houses has no median and smooth pavement, with virtually no moving vehicles and very light traffic. On the right side, a pedestrian wearing a black shirt and blue pants walks toward the ego vehicle along the curb, close to the travel lane and near its path. Farther ahead on the right shoulder, another pedestrian with an umbrella walks toward the camera, edging into the roadway and reducing the available width. At the left curb near the camera, a person stands holding a bicycle, remaining stationary by the edge. Parked bicycles and storefront displays line both sides and further narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and blue pants, walking towards the ego car, on the right side of the road. The pedestrian is approaching the driving path, so the driver must carefully manoeuvre to avoid a potential collision."}
{"id": "train_06964", "split": "train", "clip_key": "2020-0205-103411_121238_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "121238"}, "frames": ["2020-0205-103411_121238_movie_t-3.jpg", "2020-0205-103411_121238_movie_t-2.jpg", "2020-0205-103411_121238_movie_t-1.jpg", "2020-0205-103411_121238_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three same-direction lanes leads toward a wide intersection beneath an overpass; the pavement is dry and intact, and traffic moves at a moderate pace. The signal ahead shows green. A white van ahead in the ego lane drives away from the ego car at a steady speed, setting the pace. A white sedan slightly ahead to the left continues straight in its lane parallel to the ego path without encroaching. Another white van farther ahead in the right lane proceeds through the junction while maintaining distance. Parked cars and trucks line the right curb, including a large blue flatbed, reducing shoulder space but not obstructing the travel lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_06965", "split": "train", "clip_key": "titan_clip_992_000354_movie", "source": {"subset": "titan", "scenario": "clip_992", "frame": "000354"}, "frames": ["titan_clip_992_000354_movie_t-3.jpg", "titan_clip_992_000354_movie_t-2.jpg", "titan_clip_992_000354_movie_t-1.jpg", "titan_clip_992_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban narrow two-way street with shops and no median is shown, the pavement smooth and traffic light along a straight block. Ahead near the center, a pedestrian crosses left to right at walking pace across the ego lane, temporarily occupying the path. On the right curb very near the camera, a white mini-truck is stopped at the curb, narrowing the available space as the ego draws level. On the right edge, a pedestrian wearing a gray shirt and gray pants stands looking into a phone close to the curb, positioned where they could step into the lane. Far ahead, a small car continues in the same direction along the lane, moving away without affecting speed.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and gray pants, looking into a phone, and standing on the right side of the road. The driver should manoeuvre carefully because the distracted pedestrian may step into the lane without warning."}
{"id": "train_06966", "split": "train", "clip_key": "2020-0127-132751_056364_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "056364"}, "frames": ["2020-0127-132751_056364_movie_t-3.jpg", "2020-0127-132751_056364_movie_t-2.jpg", "2020-0127-132751_056364_movie_t-1.jpg", "2020-0127-132751_056364_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way road runs under an elevated expressway, with one lane each direction divided by a yellow centerline and smooth pavement. Traffic is light as the ego vehicle approaches a signalized intersection. Ahead in the ego lane, a gray sedan slows and turns right at the intersection, briefly constraining the ego car's pace. Farther ahead in the same direction, a white van continues toward the junction in the through lane. In the opposing lane to the left, a black minivan approaches and passes by without interaction. A blue sign on the pillar indicates a right turn, and on the right shoulder under the flyover a white car is parked beside the guardrail with a scooter nearby.", "hazard_reasoning": "There's a gray sedan that's slowing down in the ego-car's lane, because it is turning right, at the intersection. The ego-vehicle should slow down to maintain a safe following distance and avoid a collision with the turning sedan."}
{"id": "train_06967", "split": "train", "clip_key": "titan_clip_1048_000174_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1048_000174_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1048_000174_movie_t-3_augB1.jpg", "titan_clip_1048_000174_movie_t-2_augB1.jpg", "titan_clip_1048_000174_movie_t-1_augB1.jpg", "titan_clip_1048_000174_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with no centerline runs between buildings, with parked cars lining the left curb and shopfronts with green railings on the right; the pavement appears damp and traffic is light with no moving vehicles in either direction. Ahead in the middle of the road, a pedestrian wearing black pants walks away from the ego vehicle along the lane, remaining in the travel path and constraining the ego vehicle's pace. No traffic signals or posted speeds are clearly visible. The parked vehicles and close buildings create a tight corridor with limited passing space.", "hazard_reasoning": "There is a pedestrian wearing black pants, walking in the middle of the road, away from the ego car. Since the pedestrian is walking in the vehicle's path on a narrow street, the driver should slow down to avoid a potential collision."}
{"id": "train_06968", "split": "train", "clip_key": "titan_clip_411_000528_movie", "source": {"subset": "titan", "scenario": "clip_411", "frame": "000528"}, "frames": ["titan_clip_411_000528_movie_t-3.jpg", "titan_clip_411_000528_movie_t-2.jpg", "titan_clip_411_000528_movie_t-1.jpg", "titan_clip_411_000528_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrian on crosswalk", "environment_perception": "An urban intersection appears at the end of a narrow single-lane left-hand street with brick-pattern pavement, and traffic is light as the ego vehicle waits at a zebra crosswalk. A pedestrian wearing a white shirt and black pants, carrying a handbag, crosses the crosswalk from right to left directly in front of the ego car, dictating a stop. Another pedestrian at the left curb walks toward the crosswalk near the ego's path. On the far cross street, a green taxi travels left to right beyond the crosswalk without impeding the ego lane. A Japanese stop sign faces the ego at the corner, and a pedestrian crossing sign is posted. A white van stands along the right edge, narrowing the approach.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a handbag, and crossing a crosswalk from right to left. The driver should stop to yield to the pedestrian crossing the road at the intersection to prevent a collision."}
{"id": "train_06969", "split": "train", "clip_key": "2020-0131-135401_068321_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "068321"}, "frames": ["2020-0131-135401_068321_movie_t-3.jpg", "2020-0131-135401_068321_movie_t-2.jpg", "2020-0131-135401_068321_movie_t-1.jpg", "2020-0131-135401_068321_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of van merging ahead", "environment_perception": "An urban multi-lane arterial approaches a wide, smooth-paved, signalized intersection with a small median island dividing oncoming traffic; flow is light to moderate and steady. From the left side of the intersection a black van turns into the ego lane ahead, crossing in and beginning to merge into the path, which may constrain the approach. Slightly farther ahead in the adjacent right lane, a white utility truck with a boom proceeds straight at a slow pace, influencing nearby vehicles. Farther right beyond the median, a few oncoming cars travel through their lanes without interacting. Overhead blue guide signs indicate through movement, and the layout includes a raised triangular island and painted chevrons near the right edge.", "hazard_reasoning": "There is a black van turning in to the the ego lane from the left side of the intersection. The van could merge into the ego lane unexpectedly, so the driver should remain vigilant and be prepared to adjust speed or steering to avoid a collision."}
{"id": "train_06970", "split": "train", "clip_key": "titan_clip_56_000420_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_56_000420_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_56_000420_movie_t-3_augB1.jpg", "titan_clip_56_000420_movie_t-2_augB1.jpg", "titan_clip_56_000420_movie_t-1_augB1.jpg", "titan_clip_56_000420_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street with no median and smooth pavement extends ahead from a small intersection, and traffic is light. A pedestrian in a white shirt ahead crosses mid-block from the left to the right while pulling a small cart, moving through the ego lane toward the right sidewalk and temporarily blocking the path. A box truck stands ahead along the left curb with a cone behind it, unloading and narrowing the same-direction lane. A black van sits at the left edge near the intersection close to the ego vehicle, partly protruding into the lane and limiting the entry space.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, crossing the street in the middle of the road, from the left side to the right side. The pedestrian is in your path and not at a designated crossing point, so you should slow down to avoid a potential collision."}
{"id": "train_06971", "split": "train", "clip_key": "titan_clip_1247_000264_movie", "source": {"subset": "titan", "scenario": "clip_1247", "frame": "000264"}, "frames": ["titan_clip_1247_000264_movie_t-3.jpg", "titan_clip_1247_000264_movie_t-2.jpg", "titan_clip_1247_000264_movie_t-1.jpg", "titan_clip_1247_000264_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban side street with a single narrow marked lane runs between shopfronts; the pavement is dry and mostly smooth, and traffic is light with no moving vehicles seen. Ahead on the right, a black motorbike and several bicycles are parked partly in the ego lane, partially obstructing the path and narrowing the usable lane. Farther along the right edge more bicycles remain lined up but stationary, keeping close to the curb. A circular no-parking sign stands on a pole to the left, and storefront ramps and signboards sit near the curbs but do not project into the lane.", "hazard_reasoning": "There is a black motorbike, and several bicycles, parked on the right hand side of the road, in the ego-lane, partially obstructing the ego-lane. These parked vehicles partially obstruct your lane, requiring you to adjust your path to avoid collision."}
{"id": "train_06972", "split": "train", "clip_key": "titan_clip_877_000546_movie", "source": {"subset": "titan", "scenario": "clip_877", "frame": "000546"}, "frames": ["titan_clip_877_000546_movie_t-3.jpg", "titan_clip_877_000546_movie_t-2.jpg", "titan_clip_877_000546_movie_t-1.jpg", "titan_clip_877_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one narrow lane in each direction runs between mid-rise buildings; the pavement is smooth and dry and traffic is light. In the ego lane ahead, a small flatbed truck is stopped along the left curb, protruding into the lane and constraining the ego vehicle's path. Just beyond it on the left edge, a pedestrian wearing a red shirt and black pants walks away from the camera in the same direction and may enter the ego lane. On the right at a zebra crossing by a side street, another pedestrian stands at the curb, waiting.", "hazard_reasoning": "A pedestrian wearing a red shirt and black pants is walking along the left side of the lane, away from the ego car. The parked truck's obstruction of the left lane increases the risk of an unexpected collision if the pedestrian steps into traffic, so the driver should manoeuvre carefully around the pedestrian."}
{"id": "train_06973", "split": "train", "clip_key": "2020-0129-144857_081961_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "081961"}, "frames": ["2020-0129-144857_081961_movie_t-3.jpg", "2020-0129-144857_081961_movie_t-2.jpg", "2020-0129-144857_081961_movie_t-1.jpg", "2020-0129-144857_081961_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs beside a raised median with guardrail; the pavement is dry and traffic is heavy and queued at a signalized intersection. A white sedan directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the adjacent left lane, a red city bus followed by a loaded flatbed truck is also stopped and inches forward with the queue, constraining any lane change. Farther ahead in the ego lane, a small white box truck waits as part of the same queue. The overhead traffic signal shows red, and oncoming traffic beyond the median moves intermittently.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of a red traffic light. The driver must stop to avoid running the red light and colliding with the halted vehicle."}
{"id": "train_06974", "split": "train", "clip_key": "2020-0213-143552_004370_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "004370"}, "frames": ["2020-0213-143552_004370_movie_t-3.jpg", "2020-0213-143552_004370_movie_t-2.jpg", "2020-0213-143552_004370_movie_t-1.jpg", "2020-0213-143552_004370_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way arterial with two lanes per direction and no physical median is visible, the pavement dry and including a curbside bicycle lane; traffic is moderate with steady movement. Ahead in the left curbside ego lane, a black truck is parked by the shoulder and stands still, blocking the ego vehicle's lane. To the right, several same-direction cars and vans in the adjacent lane continue past at low speed, occupying the through lane beside the truck and constraining available gaps. On the far side, oncoming cars move smoothly in their own lanes across the painted centerline and do not interact with the ego path.", "hazard_reasoning": "There is a black truck parked in the ego lane, in front of the ego car. The driver should carefully manoeuvre around this obstacle to avoid collision and maintain safety."}
{"id": "train_06975", "split": "train", "clip_key": "2020-0218-151547_027723_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0218-151547_027723_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0218-151547_027723_movie_t-3_augB1.jpg", "2020-0218-151547_027723_movie_t-2_augB1.jpg", "2020-0218-151547_027723_movie_t-1_augB1.jpg", "2020-0218-151547_027723_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "be cautious of unloading pedestrian", "environment_perception": "An urban arterial runs under an elevated roadway with two same-direction lanes, smooth asphalt, and light to moderate traffic moving steadily. A metal barrier lines the right while several service vehicles are stopped along the left curb, narrowing the usable lane. A white car ahead in the ego lane travels at a steady pace and sets the flow. On the left, a man wearing a purple vest and purple pants stands beside a parked box truck and unloads items near the lane edge, which may bring him into the ego path. Farther back on the left, another person works at an open van door, and the stopped van slightly intrudes toward the travel lane as the ego vehicle proceeds. No signals or unusual signs are prominent.", "hazard_reasoning": "There is a man wearing a purple vest and purple pants and standing on the left side of the road, because he is unloading a parked truck. He could unexpectedly step into the lane while unloading, so the driver should be cautious of this unloading pedestrian."}
{"id": "train_06976", "split": "train", "clip_key": "2020-0218-151547_028471_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "028471"}, "frames": ["2020-0218-151547_028471_movie_t-3.jpg", "2020-0218-151547_028471_movie_t-2.jpg", "2020-0218-151547_028471_movie_t-1.jpg", "2020-0218-151547_028471_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of the cyclist ahead", "environment_perception": "An urban two-lane road runs under an elevated expressway, the asphalt looks smooth, and traffic is moderate and generally steady. A cyclist in a black jacket with a backpack rides ahead in the ego lane toward the distance, keeping to the left side and potentially influencing the ego vehicle's pace. A white compact car directly ahead in the same lane proceeds at a constant speed and effectively sets the gap in front. In the adjacent right lane, a silver minivan comes alongside and overtakes, which may merge back in front after passing. Farther ahead, several cars in both lanes maintain spacing in the same direction.", "hazard_reasoning": "There is a cyclist wearing a black jacket, carrying a backpack, cycling in the ego lane, away from the ego car. The cyclist occupies the ego lane and may reduce path clearance, so the driver should maintain a safe following distance and be prepared to adjust speed to avoid collision."}
{"id": "train_06977", "split": "train", "clip_key": "2020-0221-115122_020098_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "020098"}, "frames": ["2020-0221-115122_020098_movie_t-3.jpg", "2020-0221-115122_020098_movie_t-2.jpg", "2020-0221-115122_020098_movie_t-1.jpg", "2020-0221-115122_020098_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with dry pavement and heavy stop-and-go flow that persists through the scene. Directly ahead in the ego lane, a dark green taxi sedan is stopped because of traffic congestion ahead, holding the ego vehicle in the queue. Slightly ahead on the left, a white hatchback in the adjacent lane also waits, inching forward beside the ego lane. To the right front, a large black minivan with a roof box creeps along in its lane, occupying the space beside the ego vehicle. Overhead gantry signals and direction signs are visible at the next junction.", "hazard_reasoning": "There is a white Sedan stopped in the ego lane because of traffic congestion ahead. The stopped vehicle indicates a buildup of traffic, so the driver should stop to avoid a rear-end collision under sudden deceleration."}
{"id": "train_06978", "split": "train", "clip_key": "2020-0207-151349_064821_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "064821"}, "frames": ["2020-0207-151349_064821_movie_t-3.jpg", "2020-0207-151349_064821_movie_t-2.jpg", "2020-0207-151349_064821_movie_t-1.jpg", "2020-0207-151349_064821_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban two-way road with one lane in each direction runs between tall noise barriers, the pavement smooth and dry and traffic light. A black sedan in the opposing right lane approaches along the centerline and passes by while staying in its lane, posing no immediate conflict to the ego vehicle. Farther ahead in the same opposing lane, a white van follows the sedan and approaches more slowly, also aligned and steady. No vehicle is immediately ahead in the ego lane. A transverse joint or plate spans the roadway, with concrete barriers and rails on both sides and no salient signals or speed signs visible.", "hazard_reasoning": "There is no hazard detected in this scenario, so the driver can continue driving normally without additional caution."}
{"id": "train_06979", "split": "train", "clip_key": "titan_clip_697_000372_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_697_000372_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_697_000372_movie_t-3_augB1.jpg", "titan_clip_697_000372_movie_t-2_augB1.jpg", "titan_clip_697_000372_movie_t-1_augB1.jpg", "titan_clip_697_000372_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing", "environment_perception": "An urban backstreet with a single narrow lane and no median runs between close storefronts; the pavement is smooth and dry and traffic is light. A pedestrian in a gray shirt crosses mid-block from the left side to the right ahead, moving through the ego lane and directly in front of the path. Two other pedestrians farther ahead remain in the roadway walking away near the center, constraining the approach as they occupy the lane. No traffic signals or posted speeds are clearly visible, and closely spaced poles and building edges line the kerbs without additional obstacles.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, crossing the street in the middle of the road, from the left side to the right side. The driver should be aware of this mid-road crossing pedestrian to avoid a sudden conflict and potential collision."}
{"id": "train_06980", "split": "train", "clip_key": "2020-0227-153144_045146_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "045146"}, "frames": ["2020-0227-153144_045146_movie_t-3.jpg", "2020-0227-153144_045146_movie_t-2.jpg", "2020-0227-153144_045146_movie_t-1.jpg", "2020-0227-153144_045146_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way arterial with smooth pavement approaches a signalized intersection, and traffic is moderate but queued at the stop line. A white van directly ahead in the ego lane is stopped for the red light, keeping the ego vehicle stationary. Two pedestrians cross the zebra crossing ahead from right to left in front of the waiting vehicles. A red hatchback alongside on the left is also stopped near the intersection, narrowing room beside the ego lane. Overhead signals facing the ego direction display red.", "hazard_reasoning": "There is a white van that has stopped in front of the ego car in the ego lane, because of a red traffic light. The driver should stop now to avoid rear-ending the van and comply with the red signal."}
{"id": "train_06981", "split": "train", "clip_key": "2020-0218-103119_056867_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "056867"}, "frames": ["2020-0218-103119_056867_movie_t-3.jpg", "2020-0218-103119_056867_movie_t-2.jpg", "2020-0218-103119_056867_movie_t-1.jpg", "2020-0218-103119_056867_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene under an elevated roadway shows a smooth two-lane road carrying same-direction traffic with no median, and the flow is heavy and slow. A white box truck directly ahead in the ego lane slows and then creeps due to congestion, holding the ego car's position. To the right, a black SUV in the adjacent lane draws abreast and edges forward, continuing alongside without merging. Farther ahead in the right lane, another large truck also crawls with the queue, occupying the space beside the lead truck. Buildings and hedges line the left curb, and no salient signals or signs are visible.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a rear-end collision as traffic ahead is congested and visibility is limited."}
{"id": "train_06982", "split": "train", "clip_key": "titan_clip_1271_000186_movie", "source": {"subset": "titan", "scenario": "clip_1271", "frame": "000186"}, "frames": ["titan_clip_1271_000186_movie_t-3.jpg", "titan_clip_1271_000186_movie_t-2.jpg", "titan_clip_1271_000186_movie_t-1.jpg", "titan_clip_1271_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway and no center divider curves gently right; the pavement looks smooth and vehicular traffic is light. The ego vehicle proceeds as several pedestrians occupy the roadway. Ahead in the lane, a pedestrian in a blue shirt carrying a backpack walks away down the middle of the road, directly in the vehicle's path and constraining its pace. Slightly ahead to the left, two other pedestrians walk in the roadway in the same direction and may step into the path. Farther ahead near the right curb, another person lingers by the planter without entering the lane. Parked bicycles and a small roadside cone line the left edge.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, carrying a backpack, walking in the middle of the road, away from the ego car. The pedestrian's position in the center of the lane poses a high risk of collision, so the driver should slow down to maintain safety."}
{"id": "train_06983", "split": "train", "clip_key": "titan_clip_915_000498_movie", "source": {"subset": "titan", "scenario": "clip_915", "frame": "000498"}, "frames": ["titan_clip_915_000498_movie_t-3.jpg", "titan_clip_915_000498_movie_t-2.jpg", "titan_clip_915_000498_movie_t-1.jpg", "titan_clip_915_000498_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "A busy urban commercial street with a single narrow one-way lane and no divider; the pavement is smooth, vehicular traffic is light, and pedestrian flow is heavy. Ahead in the middle of the lane, a short pedestrian in a blue dress crosses from right to left across the ego vehicle's path. Farther ahead, several pedestrians walk along the lane in the same direction near the centerline, moving slowly and occupying the travel way, which limits available space. On the left edge just beyond them, a small red delivery scooter is stopped near the curb, partially in the lane but static. In the distance more foot traffic fills the approach around shopfronts, and there are no visible signals or posted speeds.", "hazard_reasoning": "There is a short pedestrian wearing a blue dress, in the middle of the road, crossing the street from the right side to the left side. The driver should yield because the pedestrian is entering the vehicle's path at a designated crossing and has the right of way."}
{"id": "train_06984", "split": "train", "clip_key": "2020-0207-101955_108156_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "108156"}, "frames": ["2020-0207-101955_108156_movie_t-3.jpg", "2020-0207-101955_108156_movie_t-2.jpg", "2020-0207-101955_108156_movie_t-1.jpg", "2020-0207-101955_108156_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with stopped vehicle.", "environment_perception": "An urban three-lane roadway runs under an elevated expressway, the asphalt looks smooth, and traffic is heavy and largely stopped. There is a blue sedan stopped in front of the ego car in the ego lane, holding the ego vehicle at a standstill. Ahead-left, a small flatbed truck with a green-tarped load waits in the adjacent lane, creeping with the queue beside the ego lane. To the right, a white minibus followed by a red hatchback inches forward in the neighboring lane, moving slightly faster while limiting space alongside.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, in the ego lane. The stopped sedan blocks the path and could cause a rear-end collision if the driver does not brake immediately."}
{"id": "train_06985", "split": "train", "clip_key": "2020-0212-102546_003043_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "003043"}, "frames": ["2020-0212-102546_003043_movie_t-3.jpg", "2020-0212-102546_003043_movie_t-2.jpg", "2020-0212-102546_003043_movie_t-1.jpg", "2020-0212-102546_003043_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of turning truck", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection, with a raised median on the right and dry, smooth pavement; traffic is moderate and flowing. The ego vehicle travels in the left lane. A black hatchback directly ahead slows toward the crosswalk, setting the ego vehicle's pace. In the lane to the left, a white truck makes a left turn at the intersection to change direction. Slightly ahead and to the right, a larger white box truck continues straight through the junction in the adjacent lane without affecting the ego path. Across the median, oncoming vehicles move steadily with no interaction.", "hazard_reasoning": "There is a white truck making a left turn in the lane left to the ego lane, because a change in direction is needed. The turning truck may encroach on the ego lane or slow unexpectedly, so maintain caution to avoid collision."}
{"id": "train_06986", "split": "train", "clip_key": "2020-0205-103411_041458_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "041458"}, "frames": ["2020-0205-103411_041458_movie_t-3.jpg", "2020-0205-103411_041458_movie_t-2.jpg", "2020-0205-103411_041458_movie_t-1.jpg", "2020-0205-103411_041458_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop promptly to avoid collision", "environment_perception": "An urban multilane divided arterial runs under elevated ramps, with dry pavement and slow, queued same-direction traffic at a crosswalk. Directly ahead in the ego lane, a black station wagon is stopped at the crosswalk, holding the ego vehicle as it waits in the queue caused by congestion. Farther ahead in the same lane, a white van also remains stationary under the overpass, reinforcing the backup. In the oncoming lanes to the right, a white sedan proceeds past, separated by a narrow median and not interacting. Overhead lane signs show straight-through arrows.", "hazard_reasoning": "There is a blue hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop promptly to avoid collision with the halted vehicle ahead."}
{"id": "train_06987", "split": "train", "clip_key": "2020-0214-145407_036732_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0214-145407_036732_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0214-145407_036732_movie_t-3_augB1.jpg", "2020-0214-145407_036732_movie_t-2_augB1.jpg", "2020-0214-145407_036732_movie_t-1_augB1.jpg", "2020-0214-145407_036732_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial runs beneath an elevated expressway, with smooth pavement and no median; traffic is moderate and gradually slowing near an overhead gantry. A white box truck directly ahead in the ego lane slows as traffic bunches ahead, constraining the ego vehicle's pace. A smaller white truck travels slightly ahead in the right adjacent lane, continuing straight and occupying the space for a potential rightward lane change. To the left, a black taxi in the curb lane moves at a similar speed just ahead of the ego car, holding its lane. Overhead green direction signs span the roadway, while buildings line the left and a sound barrier borders the right.", "hazard_reasoning": "There is a white truck in slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid collision due to the reduced speed of the truck ahead."}
{"id": "train_06988", "split": "train", "clip_key": "titan_clip_344_000498_movie", "source": {"subset": "titan", "scenario": "clip_344", "frame": "000498"}, "frames": ["titan_clip_344_000498_movie_t-3.jpg", "titan_clip_344_000498_movie_t-2.jpg", "titan_clip_344_000498_movie_t-1.jpg", "titan_clip_344_000498_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with block-paved surface and no median runs straight ahead, carrying light vehicle flow amid many pedestrians. A dark van ahead near the center-right stops by the curb, narrowing the available lane. Ahead of it, a pedestrian walks in the middle of the road away from the ego car because a parked vehicle occupies the roadside. Another pedestrian at the right edge near the camera walks along the carriageway toward the camera, close to the curb. A scooter and other items are parked on the left outside shops, slightly constricting space. A no-parking sign is visible on the left.", "hazard_reasoning": "There is a man, wearing a blue shirt and black pants, walking in the middle of the road, away from the ego car, because of the parked vehicle. The driver should slow down because the pedestrian is walking in the middle of the road to avoid the parked vehicle, increasing the risk of collision."}
{"id": "train_06989", "split": "train", "clip_key": "titan_clip_1115_000462_movie", "source": {"subset": "titan", "scenario": "clip_1115", "frame": "000462"}, "frames": ["titan_clip_1115_000462_movie_t-3.jpg", "titan_clip_1115_000462_movie_t-2.jpg", "titan_clip_1115_000462_movie_t-1.jpg", "titan_clip_1115_000462_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to slow-moving vehicle", "environment_perception": "An urban commercial street with a single narrow lane paved with bricks has no median and light, slow-moving traffic. A white truck ahead in the oncoming lane along the left side of the road approaches slowly, setting the pace. Pedestrians are present near and within the marked crosswalk ahead, moving from the left sidewalk and approaching from the right, affecting flow at the intersection. A small white car on the cross street passes across the ego lane from right to left before the ego vehicle arrives. Cones and a stall along the right curb slightly narrow the roadside space.", "hazard_reasoning": "A white truck driving slowly on the left side of the road. Its reduced speed may disrupt traffic flow and obscure pedestrian movements, so you should yield to maintain safety."}
{"id": "train_06990", "split": "train", "clip_key": "2020-0210-142719_003241_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-142719_003241_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-142719_003241_movie_t-3_augB1.jpg", "2020-0210-142719_003241_movie_t-2_augB1.jpg", "2020-0210-142719_003241_movie_t-1_augB1.jpg", "2020-0210-142719_003241_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane one-way street approaches a railway overpass, with dashed lane markings and fair pavement; traffic is moderate and moves slowly due to curbside parking that narrows the left lane. Ahead in the ego lane, a cyclist in a black top carrying a handbag rides away near the center of the lane because the sidewalk is blocked by parked trucks and vans, and she constrains the ego vehicle's pace. Farther ahead in the same lane, a small white car proceeds toward the underpass at low speed. In the right lane, a white box truck advances parallel, gradually overtaking. Height restriction signs are posted on the overpass. Numerous parked work trucks line the left curb, creating a continuous obstacle.", "hazard_reasoning": "There is a cyclist wearing a black shirt, carrying a handbag, cycling in the middle of the road, away from the ego car, because the sidewalk is blocked by vehicles. The cyclist's presence in the traffic lane increases collision risk, so the driver should slow down to maintain a safe distance."}
{"id": "train_06991", "split": "train", "clip_key": "titan_clip_54_000354_movie", "source": {"subset": "titan", "scenario": "clip_54", "frame": "000354"}, "frames": ["titan_clip_54_000354_movie_t-3.jpg", "titan_clip_54_000354_movie_t-2.jpg", "titan_clip_54_000354_movie_t-1.jpg", "titan_clip_54_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with no centerline runs between buildings; pavement is smooth and traffic is light but slowed by a roadside work zone. The ego vehicle proceeds along the left side while cones and pipes intrude from the left, narrowing the lane. A small gray van ahead in the ego path approaches a zebra crossing and slows, constrained by the narrowed roadway. A pedestrian wearing a cap and a reflective jacket stands on the right edge of the road, partly in the ego lane because of construction on the left, reducing the available width. Additional pedestrians remain on the left sidewalk beside the barriers near the work area and appear stationary. An orange roadwork warning sign is posted on the right facade, and no oncoming traffic or median is visible.", "hazard_reasoning": "There's a pedestrian, wearing a cap and a reflective jacket, standing on the right side of the road, in the ego lane, because of construction work on the left. The driver should slow down because the pedestrian is occupying the driving lane and may step into the path unexpectedly."}
{"id": "train_06992", "split": "train", "clip_key": "titan_clip_1147_000168_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1147_000168_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1147_000168_movie_t-3_augB1.jpg", "titan_clip_1147_000168_movie_t-2_augB1.jpg", "titan_clip_1147_000168_movie_t-1_augB1.jpg", "titan_clip_1147_000168_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street curves gently right with no median and worn asphalt, and traffic is light. A white box truck ahead in the ego lane moves slowly toward the bend, setting the pace. A pedestrian wearing shorts and a face mask is in the middle of the road ahead, crossing toward the right curb and briefly occupying the ego path. A large service truck is stopped along the left edge near the camera, encroaching slightly into the lane. A white car is parked at the right curb near the corner, and construction fencing lines the right side, tightening the passage and limiting the view around the bend.", "hazard_reasoning": "There is a pedestrian wearing shorts and a face mask in the middle of the road, crossing to the right side of the road. The driver should slow down to ensure the pedestrian can cross safely and avoid a collision."}
{"id": "train_06993", "split": "train", "clip_key": "titan_clip_69_000048_movie", "source": {"subset": "titan", "scenario": "clip_69", "frame": "000048"}, "frames": ["titan_clip_69_000048_movie_t-3.jpg", "titan_clip_69_000048_movie_t-2.jpg", "titan_clip_69_000048_movie_t-1.jpg", "titan_clip_69_000048_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban scene at a compact two-way intersection with single lanes each way and no median; the ego car approaches in the left lane on smooth pavement amid light traffic. A yellow-and-green bus is ahead in the middle of the junction turning right into the street on the right, occupying the ego vehicle's path and prompting a brief slowdown. From the left front, a white car edges into the intersection and moves slowly forward, potentially crossing ahead of the ego vehicle. On the right sidewalk at the corner, a person with a bicycle waits near the storefront and remains clear of the roadway. Tall buildings closely flank the streets, with clear sightlines into the intersecting roads.", "hazard_reasoning": "There is a yellow-and-green bus turning in the middle of the intersection, into the street on the right. This maneuver may result in sudden speed changes or require lane adjustments, so follow the vehicle ahead to maintain safe distance."}
{"id": "train_06994", "split": "train", "clip_key": "2020-0212-150403_017286_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "017286"}, "frames": ["2020-0212-150403_017286_movie_t-3.jpg", "2020-0212-150403_017286_movie_t-2.jpg", "2020-0212-150403_017286_movie_t-1.jpg", "2020-0212-150403_017286_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban two-way road with two lanes in the ego direction has smooth asphalt and light traffic moving steadily. In the ego lane, a black SUV has stopped directly ahead of the ego car and blocks the lane. Alongside on the left, a white compact van in the adjacent lane continues forward slowly past the SUV, limiting the ego's immediate option to change lanes. Farther ahead the roadway appears open with sparse same-direction traffic. Pedestrians walk and wait on the right sidewalk behind guardrails. An overhead directional sign is visible in the distance.", "hazard_reasoning": "There is a black SUV that is in the ego lane and has stopped in front of the ego car. The sudden halt of the SUV ahead creates a collision risk if the driver does not decelerate in time, so the driver should be prepared to stop immediately."}
{"id": "train_06995", "split": "train", "clip_key": "2020-0210-101957_066226_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "066226"}, "frames": ["2020-0210-101957_066226_movie_t-3.jpg", "2020-0210-101957_066226_movie_t-2.jpg", "2020-0210-101957_066226_movie_t-1.jpg", "2020-0210-101957_066226_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban arterial with two lanes in the ego direction and no median has dry, well-marked pavement and heavy stop-and-go flow. Directly ahead in the left ego lane, a white box truck is stopped because of traffic congestion, holding the ego vehicle. In the adjacent right lane, a black car alongside and a white sedan slightly ahead are also nearly stopped, limiting merge options. An overhead blue guide sign shows destinations and indicates a T-junction ahead.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion. Driver should stop to maintain a safe distance from the halted vehicle and avoid a rear-end collision."}
{"id": "train_06996", "split": "train", "clip_key": "titan_clip_376_000168_movie", "source": {"subset": "titan", "scenario": "clip_376", "frame": "000168"}, "frames": ["titan_clip_376_000168_movie_t-3.jpg", "titan_clip_376_000168_movie_t-2.jpg", "titan_clip_376_000168_movie_t-1.jpg", "titan_clip_376_000168_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "A narrow urban street with brick-pattern pavement and no marked centerline runs between shops and signage, with light traffic and no median. The ego vehicle follows a single lane along the left side typical of Japan. A dark sedan ahead in the same lane moves slowly toward a small junction, constraining the ego's pace. On the right, a pedestrian with a backpack crosses from right to left where no crosswalk is present, potentially entering the ego lane. At the near left curb, another pedestrian steps off the sidewalk and walks diagonally into the roadway close to the ego path. A blue straight-ahead-only sign and a no-parking sign are posted on the left, and several bicycles are parked along the right sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a brown shirt, carrying a backpack, crossing the street from the right side of the road to the left side, because there is no crosswalk. The driver should stop immediately to avoid a collision with the crossing pedestrian."}
{"id": "train_06997", "split": "train", "clip_key": "titan_clip_710_000438_movie", "source": {"subset": "titan", "scenario": "clip_710", "frame": "000438"}, "frames": ["titan_clip_710_000438_movie_t-3.jpg", "titan_clip_710_000438_movie_t-2.jpg", "titan_clip_710_000438_movie_t-1.jpg", "titan_clip_710_000438_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the stopped cart", "environment_perception": "An urban residential alley with a single narrow two-way carriageway and no median shows smooth pavement and light traffic; construction sheeting and cones line the left side, further pinching the road. On the right at the curb, a green bicycle cart is stopped partly in the ego lane because the road is narrow, constraining the ego vehicle's path. Ahead near the center, a small bicycle moves slowly in the same direction and occupies the lane, potentially setting the pace. At the left foreground, an oncoming cyclist approaches along the edge and passes close by, temporarily reducing available space.", "hazard_reasoning": "There is a green bicycle cart stopped in the ego lane, because the road is narrow, on the right side of the road. The cart blocks the travel lane on a narrow street, so the driver should carefully manoeuvre around it to avoid a collision."}
{"id": "train_06998", "split": "train", "clip_key": "2020-0227-104226_091108_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "091108"}, "frames": ["2020-0227-104226_091108_movie_t-3.jpg", "2020-0227-104226_091108_movie_t-2.jpg", "2020-0227-104226_091108_movie_t-1.jpg", "2020-0227-104226_091108_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial passes between mid-rise buildings, with a guardrail and narrow raised divider on the right and dry, smooth pavement; traffic is heavy and queued at a red signal. Directly ahead in the ego lane a red SUV is stopped for the red light, holding the ego vehicle. Farther ahead in the same lane a large white box truck also stands still, forming the front of the queue. In the adjacent left lane a white mini-van and several cars wait or inch forward alongside, leaving little room to merge.", "hazard_reasoning": "There is a red SUV stopped in front of the ego car, in the ego lane, because of red traffic lights. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_06999", "split": "train", "clip_key": "2020-0207-101955_039848_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "039848"}, "frames": ["2020-0207-101955_039848_movie_t-3.jpg", "2020-0207-101955_039848_movie_t-2.jpg", "2020-0207-101955_039848_movie_t-1.jpg", "2020-0207-101955_039848_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban scene unfolds under an elevated roadway on a smooth two-lane one-way street with no median, leading to an uphill ramp ahead; traffic is light throughout. A black motorcycle ahead in the ego lane pulls away and climbs the ramp as the road ahead remains clear, creating no constraint for the ego vehicle. A white van farther ahead in the left adjacent lane proceeds straight at a steady pace and stays separate from the ego lane. A circular speed-limit sign shows 50 on the left, and overhead direction boards indicate the ramp. No pedestrians or obstacles appear near the travel lanes.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane, away from the ego car, because the road ahead is clear. You should follow the vehicle ahead to maintain a safe distance and avoid abrupt maneuvers."}
{"id": "train_07000", "split": "train", "clip_key": "2020-0210-101957_078186_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "078186"}, "frames": ["2020-0210-101957_078186_movie_t-3.jpg", "2020-0210-101957_078186_movie_t-2.jpg", "2020-0210-101957_078186_movie_t-1.jpg", "2020-0210-101957_078186_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A suburban residential two-way road with one lane each direction runs between railings and block walls, the pavement dry and smooth, and traffic appears light with no oncoming vehicles. A brown truck is immediately ahead, turning left from a side street and merging into the lane in front. The road curves through the neighborhood with buildings close to the edge that narrow sight around the bend. A yellow winding-road warning sign is visible on the left, and a solid yellow centerline divides directions. No pedestrians, cyclists, parked vehicles, or signals are visible.", "hazard_reasoning": "There is a brown truck, lane changing in front of the ego car, to the ego lane, because it is turning left from a side street, into the ego lane. The driver should slow down to maintain a safe distance and avoid collision with the merging truck."}
{"id": "train_07001", "split": "train", "clip_key": "2020-0225-102455_029956_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "029956"}, "frames": ["2020-0225-102455_029956_movie_t-3.jpg", "2020-0225-102455_029956_movie_t-2.jpg", "2020-0225-102455_029956_movie_t-1.jpg", "2020-0225-102455_029956_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban arterial with multiple same-direction lanes and a right-side guardrail approaches a busy intersection, the pavement dry and traffic moderate. A black SUV is stopped ahead in the ego lane, waiting because a white van crosses from right to left through the intersection and briefly blocks the way. Groups of pedestrians gather on both sidewalks near the crosswalks, standing by without stepping into the roadway. A blue circular sign ahead indicates straight travel. Construction hoarding lines the right side but does not intrude into the lane.", "hazard_reasoning": "There is a black SUV stopped in front of the ego-car, in the ego-lane, because of another vehicle crossing ahead in the intersection. The driver should yield as the stopped SUV indicates cross-traffic entering the intersection, requiring remaining behind to avoid collision."}
{"id": "train_07002", "split": "train", "clip_key": "2020-0127-132751_020858_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "020858"}, "frames": ["2020-0127-132751_020858_movie_t-3.jpg", "2020-0127-132751_020858_movie_t-2.jpg", "2020-0127-132751_020858_movie_t-1.jpg", "2020-0127-132751_020858_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane in each direction runs uphill beneath an elevated viaduct, bounded by concrete barriers and a guardrail; the pavement looks smooth and traffic is light. Ahead in the ego lane, a white hatchback continues uphill and gradually pulls away because the road ahead is clear. Farther ahead in the same lane, another small car keeps a steady gap and does not impede the ego vehicle. In the oncoming lane to the right, several cars approach along the opposite flow, separated by the yellow center line and remaining independent of the ego vehicle's path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07003", "split": "train", "clip_key": "2020-0203-114632_021290_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "021290"}, "frames": ["2020-0203-114632_021290_movie_t-3.jpg", "2020-0203-114632_021290_movie_t-2.jpg", "2020-0203-114632_021290_movie_t-1.jpg", "2020-0203-114632_021290_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with left-side traffic approaches a wide, signalized intersection with smooth pavement and colored surfacing, and traffic flow is moderate. A black van ahead in the ego lane proceeds straight through the junction, setting the pace. Slightly left of center, a bicyclist rides ahead into the intersection in the same direction and drifts toward the ego path, reducing clearance. Several pedestrians are in the near crosswalk from the left; among them, a person in a purple coat walks toward the ego vehicle within the crossing and could enter its lane. On the right side of the cross street, a pair of vans wait at the stop line. Overhead traffic signals control the junction, though the aspect is not clearly visible.", "hazard_reasoning": "There is a man wearing a purple coat and walking toward the ego car, in a pedestrian crossing. He is entering your path, so you must stop immediately to avoid a collision."}
{"id": "train_07004", "split": "train", "clip_key": "2020-0203-154554_015227_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "015227"}, "frames": ["2020-0203-154554_015227_movie_t-3.jpg", "2020-0203-154554_015227_movie_t-2.jpg", "2020-0203-154554_015227_movie_t-1.jpg", "2020-0203-154554_015227_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A busy urban, multi-lane signalized intersection features wide zebra crossings and smooth pavement; cross-street traffic flows while the ego vehicle is stopped at the line. Ahead, a pedestrian in a yellow coat pushing a stroller crosses the crosswalk from left to right directly in front of the ego lane, potentially entering the path. Another pedestrian in the middle of the crosswalk walks rightward in front of the bumper, occupying the lane. Beyond them, several vehicles, including a white van, move across the junction from left to right. On the right edge, a black taxi waits at the corner facing the intersection.", "hazard_reasoning": "There is a pedestrian wearing a yellow coat, pushing a stroller, crossing the street at the pedestrian crossing, from the left side to the right side. The driver must stop to avoid colliding with the pedestrian in the crosswalk."}
{"id": "train_07005", "split": "train", "clip_key": "titan_clip_1288_000450_movie", "source": {"subset": "titan", "scenario": "clip_1288", "frame": "000450"}, "frames": ["titan_clip_1288_000450_movie_t-3.jpg", "titan_clip_1288_000450_movie_t-2.jpg", "titan_clip_1288_000450_movie_t-1.jpg", "titan_clip_1288_000450_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street climbs a hill between mid-rise buildings, with a single lane each direction, guardrails at both curbs, and textured dry pavement; traffic is light. The ego vehicle proceeds in the left uphill lane, which stays clear ahead. An oncoming yellow taxi passes close on the right, traveling downhill in its lane and briefly reducing lateral clearance. Farther ahead, a large bus approaches downhill in the opposing lane at a steady pace, drawing closer to the ego's position on the narrow roadway. On the left sidewalk a pedestrian ascends steps behind a guardrail, while another walks farther up the same sidewalk. No prominent signals are visible.", "hazard_reasoning": "Since no hazards are present, the driver can proceed smoothly while remaining attentive to the road."}
{"id": "train_07006", "split": "train", "clip_key": "2020-0218-151547_027735_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "027735"}, "frames": ["2020-0218-151547_027735_movie_t-3.jpg", "2020-0218-151547_027735_movie_t-2.jpg", "2020-0218-151547_027735_movie_t-1.jpg", "2020-0218-151547_027735_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped hatchback", "environment_perception": "An urban two-lane one-way road runs beneath an elevated expressway, with guardrails on the right and dry pavement; traffic is light and flows steadily. The white hatchback noted as stopped is actually moving ahead in the ego lane at a steady pace, setting our speed. On the left curb, a small van and a white box truck are stopped, and a person stands beside the truck close to the roadway, reducing side clearance. Farther ahead, another car travels in the left lane and continues straight without affecting our path.", "hazard_reasoning": "There is a white hatchback stopped at the left side of the road. The driver should be aware because the stopped hatchback may pull out into the lane unexpectedly, posing a risk to following traffic."}
{"id": "train_07007", "split": "train", "clip_key": "2020-0214-145407_024371_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "024371"}, "frames": ["2020-0214-145407_024371_movie_t-3.jpg", "2020-0214-145407_024371_movie_t-2.jpg", "2020-0214-145407_024371_movie_t-1.jpg", "2020-0214-145407_024371_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be cautious of the truck braking ahead", "environment_perception": "An urban divided arterial with two lanes in the ego direction curves gently right, bordered by hedges and guardrails; the damp pavement shows colored anti-skid patches, and traffic ahead is moderate and slowing. A gray truck directly ahead in the ego lane brakes because congestion forms beyond the curve, constraining the ego vehicle's pace. Several cars farther ahead in both same-direction lanes move slowly in a short queue. Overhead gantries with direction boards span the road, and a side ramp rises on the right with no vehicles merging. Oncoming lanes are separated to the left by a planted median.", "hazard_reasoning": "There is a gray truck braking in the ego lane, because of traffic congestion ahead. The truck's sudden slow-down indicates potential for abrupt speed changes, so the driver should be cautious and maintain a safe following distance under these conditions."}
{"id": "train_07008", "split": "train", "clip_key": "2020-0210-101957_081792_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "081792"}, "frames": ["2020-0210-101957_081792_movie_t-3.jpg", "2020-0210-101957_081792_movie_t-2.jpg", "2020-0210-101957_081792_movie_t-1.jpg", "2020-0210-101957_081792_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential two-way road with one narrow lane per direction and a painted centerline runs straight; pavement is smooth and traffic is light. Metal railings border both sides and a white raised marking lies ahead in the ego lane. A brown truck ahead in the ego lane drives away from the camera at a steady pace, constraining the ego car. On the left sidewalk, two pedestrians walk along the buildings, staying off the road. From a right-side side street, the nose of a silver car waits to merge into the main road, which could enter the ego lane after the truck passes. No oncoming vehicles are close.", "hazard_reasoning": "There is a brown truck driving in the ego lane away from the ego car. The truck ahead may slow or change behavior unexpectedly, so remain vigilant and monitor its movements."}
{"id": "train_07009", "split": "train", "clip_key": "titan_clip_958_000132_movie", "source": {"subset": "titan", "scenario": "clip_958", "frame": "000132"}, "frames": ["titan_clip_958_000132_movie_t-3.jpg", "titan_clip_958_000132_movie_t-2.jpg", "titan_clip_958_000132_movie_t-1.jpg", "titan_clip_958_000132_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked vehicle", "environment_perception": "A narrow urban street between tall buildings carries a single undivided lane with smooth pavement and light traffic as the view advances slowly. A black sedan is parked along the left side ahead, slightly narrowing the travel space as the ego approaches. On the right, two pedestrians push a small cart along the sidewalk near the curb, walking toward the camera and remaining close to the ego path. Farther right by the glass-fronted store, another pedestrian stands at the entrance and continues along the sidewalk. A round 30 km/h speed limit sign is posted on the left, and a bicycle is parked beside a notice board nearby.", "hazard_reasoning": "There is a black sedan parked on the left side of the road. The driver should manoeuvre carefully around it to avoid collision and maintain safe clearance."}
{"id": "train_07010", "split": "train", "clip_key": "titan_clip_182_000036_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_182_000036_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_182_000036_movie_t-3_augB1.jpg", "titan_clip_182_000036_movie_t-2_augB1.jpg", "titan_clip_182_000036_movie_t-1_augB1.jpg", "titan_clip_182_000036_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban alley with a single narrow two-way lane and no median has smooth pavement and light traffic. Ahead in the middle of the lane, a pedestrian in a white T-shirt and black pants walks toward the ego vehicle, occupying the path and constraining its approach. To the right, a dark car waits nose-out at a parking-garage exit, poised to join the lane and potentially cross the ego path. At the left edge near a storefront, a white van stands close to the curb, narrowing the available space.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and black pants, and walking in the middle of the road, towards the ego car. Because the pedestrian is in the vehicle's path and may continue walking forward, the driver should slow down to avoid a potential collision."}
{"id": "train_07011", "split": "train", "clip_key": "titan_clip_61_000564_movie", "source": {"subset": "titan", "scenario": "clip_61", "frame": "000564"}, "frames": ["titan_clip_61_000564_movie_t-3.jpg", "titan_clip_61_000564_movie_t-2.jpg", "titan_clip_61_000564_movie_t-1.jpg", "titan_clip_61_000564_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrians crossing ahead", "environment_perception": "An urban scene on a narrow two-way street with no median and smooth pavement, lined by close buildings; traffic is light with several vehicles parked along the left, and no oncoming vehicles are visible. A black sedan is parked on the left curb just ahead in the ego lane, narrowing the passage and shaping the path around it. Farther ahead, a small box truck in the same direction stands near the curb and appears stopped, constraining the pace. In the middle distance, a group of pedestrians wearing white shirts crosses the street mid-block from right to left, moving toward the ego lane.", "hazard_reasoning": "There are a group of pedestrians wearing white shirts, crossing the street in the middle of the road, and walking from the right side to the left side. Drivers should be cautious because these pedestrians could step into the vehicle's path unexpectedly."}
{"id": "train_07012", "split": "train", "clip_key": "2020-0127-132751_068356_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "068356"}, "frames": ["2020-0127-132751_068356_movie_t-3.jpg", "2020-0127-132751_068356_movie_t-2.jpg", "2020-0127-132751_068356_movie_t-1.jpg", "2020-0127-132751_068356_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with two same-direction lanes on the left approaches a signalized intersection, the red-painted approach in good condition and traffic light. A white van ahead in the ego lane proceeds straight through the junction on a green signal, modestly setting the ego vehicle's pace. A black minivan slightly ahead in the right same-direction lane moves forward parallel to the ego path near the crosswalk. Farther ahead in the opposite lanes, a few oncoming vehicles continue past the intersection without interacting. The signal facing the ego direction shows green, and a no U-turn sign stands on the right.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07013", "split": "train", "clip_key": "titan_clip_801_000288_movie", "source": {"subset": "titan", "scenario": "clip_801", "frame": "000288"}, "frames": ["titan_clip_801_000288_movie_t-3.jpg", "titan_clip_801_000288_movie_t-2.jpg", "titan_clip_801_000288_movie_t-1.jpg", "titan_clip_801_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban commercial street with a single two-way carriageway, no median, and smooth pavement shows light traffic. A pedestrian in a white shirt and gray pants is in the middle of the road ahead, crossing from the right to the left where there is no crosswalk, briefly occupying the ego lane. Farther ahead in the same lane, another person walks away along the center of the roadway, constraining the pace. A gray car stands at the left edge near the camera, protruding slightly into the lane and narrowing the passage. Shop signboards and parked bicycles line the right side and jut toward the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and gray pants, in the middle of the road, crossing the street, from the right side of the street to the left side, because there is no pedestrian crosswalk. The driver should manoeuvre carefully around this pedestrian to avoid a collision due to the lack of a marked crossing."}
{"id": "train_07014", "split": "train", "clip_key": "titan_clip_1108_000414_movie", "source": {"subset": "titan", "scenario": "clip_1108", "frame": "000414"}, "frames": ["titan_clip_1108_000414_movie_t-3.jpg", "titan_clip_1108_000414_movie_t-2.jpg", "titan_clip_1108_000414_movie_t-1.jpg", "titan_clip_1108_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban narrow two-way street with no centerline runs between buildings and a rail viaduct; the asphalt is smooth and traffic is light. Ahead in the ego lane, a small white delivery scooter travels away at low speed near the center of the road, modestly constraining pace. On the left side near the curb, a pedestrian carrying a backpack walks away from the ego vehicle along the roadside, remaining outside the lane. At the left foreground, a bicycle with a loaded basket stands parked and protrudes slightly into the roadway as a near-side obstacle, with a line of orange cones tightening that edge. A convex traffic mirror sits on the right by a parking lot entrance.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking on the left side of the road, away from the ego car. The pedestrian might step further into the lane or change direction unexpectedly, posing a collision risk, so the driver should adjust speed and remain vigilant under this situation."}
{"id": "train_07015", "split": "train", "clip_key": "titan_clip_1188_000546_movie", "source": {"subset": "titan", "scenario": "clip_1188", "frame": "000546"}, "frames": ["titan_clip_1188_000546_movie_t-3.jpg", "titan_clip_1188_000546_movie_t-2.jpg", "titan_clip_1188_000546_movie_t-1.jpg", "titan_clip_1188_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban alley-like street with a single narrow lane paved with interlocking bricks runs between tall buildings, with light traffic and several parked cars tightening the left margin. There is no divider, and the road gently rises toward a distant junction. On the left edge close ahead, a man wearing jungle green trousers, a light blue shirt, and black shoes, carrying a shoulder handbag, walks along the roadside in the same direction near the ego lane. Farther ahead on the left, another pedestrian walks a small dog, keeping to the margin. A white van ahead in the same lane moves slowly toward the junction and lightly constrains the pace. Blue P parking signs are posted on poles along the street.", "hazard_reasoning": "There is a man wearing a pair of exotic jungle green trousers, a light blue shirt, black shoes, hanging a handbag on the shoulders, walking on the left side of the road. The driver should manoeuvre carefully around him to maintain a safe distance and avoid collision."}
{"id": "train_07016", "split": "train", "clip_key": "titan_clip_488_000186_movie", "source": {"subset": "titan", "scenario": "clip_488", "frame": "000186"}, "frames": ["titan_clip_488_000186_movie_t-3.jpg", "titan_clip_488_000186_movie_t-2.jpg", "titan_clip_488_000186_movie_t-1.jpg", "titan_clip_488_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of the pedestrian", "environment_perception": "A narrow urban two-way street without a centerline runs between buildings; the pavement is smooth and traffic is light with no moving vehicles. A pedestrian wearing all black stands at the left edge ahead beside the construction fence, near the ego lane and potentially entering the path. Farther ahead on the right, another pedestrian walks along the curb toward a side junction, keeping to the edge and not impeding. A temporary construction barrier lines the left side, narrowing the roadway, and a white box truck with another car are parked along the left, partially intruding into the lane.", "hazard_reasoning": "There is a pedestrian wearing all black, standing on the left side of the road. The pedestrian is close to the travel lane and may step into traffic unexpectedly, so the driver should be aware to prevent a potential collision."}
{"id": "train_07017", "split": "train", "clip_key": "2020-0205-103411_060008_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "060008"}, "frames": ["2020-0205-103411_060008_movie_t-3.jpg", "2020-0205-103411_060008_movie_t-2.jpg", "2020-0205-103411_060008_movie_t-1.jpg", "2020-0205-103411_060008_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs between high-rise buildings, with three lanes in the same direction, dry smooth pavement, and slow to moderate flow. Ahead in the ego lane, a gray box truck drives away from the ego car at low speed, effectively setting the pace. In the adjacent right lane, a silver wagon draws alongside and continues ahead, overtaking the ego vehicle. Farther ahead in that right lane, a small white van proceeds with the same slow flow. Overhead blue guide signs span the roadway. On the far left, a large truck is stopped with its rear doors open while a person stands beside it at the curb, narrowing roadside space.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07018", "split": "train", "clip_key": "titan_clip_664_000246_movie", "source": {"subset": "titan", "scenario": "clip_664", "frame": "000246"}, "frames": ["titan_clip_664_000246_movie_t-3.jpg", "titan_clip_664_000246_movie_t-2.jpg", "titan_clip_664_000246_movie_t-1.jpg", "titan_clip_664_000246_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked vehicle", "environment_perception": "An urban street with two same-direction lanes runs under an overhead structure; the pavement is dry but worn, temporary barriers line the right edge, and traffic flows at a moderate pace. Ahead in the ego lane, a black van travels steadily and sets the pace. On the left curb, a white SUV is parked on the shoulder, narrowing space. In the adjacent right lane, the front of an orange car runs alongside slightly ahead of the ego vehicle. A no-parking sign is posted on the left.", "hazard_reasoning": "There is a white sedan parked on the left side of the road. The parked vehicle could obstruct the driver's path and reduce visibility of pedestrians emerging from the sidewalk, so the driver should manoeuvre carefully around it."}
{"id": "train_07019", "split": "train", "clip_key": "2020-0204-103442_011969_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "011969"}, "frames": ["2020-0204-103442_011969_movie_t-3.jpg", "2020-0204-103442_011969_movie_t-2.jpg", "2020-0204-103442_011969_movie_t-1.jpg", "2020-0204-103442_011969_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to merging vehicle", "environment_perception": "An urban multi-lane divided arterial with smooth pavement runs past tall buildings; traffic is moderate. The ego car travels in a central lane with oncoming traffic separated to the right by a hedge median, and it approaches a wide crosswalk under overhead signals. A black van ahead cuts in from the left lane into the ego lane, moving in front because the left curb lane has stopped or parked vehicles. A black taxi to the left proceeds slowly near the curb amid those stopped cars. A scooter on the left shoulder waits by the sidewalk close to the lane. The adjacent right lane shows a right-turn-only arrow.", "hazard_reasoning": "There is a black van in the left lane, cutting into the ego lane, in front of the ego-car, because of parked cars ahead in the left lane. You should yield to the merging van to avoid a collision."}
{"id": "train_07020", "split": "train", "clip_key": "titan_clip_1064_000324_movie", "source": {"subset": "titan", "scenario": "clip_1064", "frame": "000324"}, "frames": ["titan_clip_1064_000324_movie_t-3.jpg", "titan_clip_1064_000324_movie_t-2.jpg", "titan_clip_1064_000324_movie_t-1.jpg", "titan_clip_1064_000324_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrians ahead", "environment_perception": "A narrow urban street with a single shared lane, no median, and smooth pavement shows no moving vehicle traffic. On the right edge near the ego path, three pedestrians walk toward the vehicle where there is no sidewalk, partially occupying the lane. Farther ahead in the lane center, several other pedestrians proceed away from the camera, loosely dispersed and constraining the available path. A white van is parked along the right curb beside vending machines, further narrowing the passage, while a parked bicycle and fencing line the left edge.", "hazard_reasoning": "There are three pedestrians walking towards the ego car, on the right side of the road, because there is no sidewalk. The driver should yield because these pedestrians may step into the roadway, posing a collision risk."}
{"id": "train_07021", "split": "train", "clip_key": "2020-0214-102601_083878_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "083878"}, "frames": ["2020-0214-102601_083878_movie_t-3.jpg", "2020-0214-102601_083878_movie_t-2.jpg", "2020-0214-102601_083878_movie_t-1.jpg", "2020-0214-102601_083878_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane road with a single yellow centerline and narrow shoulders leads to a signalized intersection; the pavement is dry and traffic is light but momentarily stopped. A gray SUV directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle. Farther ahead in the same lane, a large box truck also waits at the signal and sets the pace of the short queue. On the right sidewalk near the corner, two pedestrians walk and pause by the post, remaining off the roadway.", "hazard_reasoning": "There is a gray SUV stopped in front of the ego car, in the ego lane, because of a red traffic light. Stop to prevent collision with the halted vehicle and obey the red signal."}
{"id": "train_07022", "split": "train", "clip_key": "titan_clip_826_000318_movie", "source": {"subset": "titan", "scenario": "clip_826", "frame": "000318"}, "frames": ["titan_clip_826_000318_movie_t-3.jpg", "titan_clip_826_000318_movie_t-2.jpg", "titan_clip_826_000318_movie_t-1.jpg", "titan_clip_826_000318_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban commercial street with trees, one lane in each direction and no median, has worn pavement and light traffic. A delivery worker just ahead on the left pushes a handcart into the roadway, crossing slowly and potentially entering the ego lane. A cyclist ahead near the centerline rides away in the same direction and sets a slower pace for the lane. Parked trucks line both curbs, including a white truck on the left parked for unloading, narrowing the usable lane.", "hazard_reasoning": "There is a white truck parked on the left side of the road because it is being unloaded. The parked truck partially obstructs the roadway and sidewalk, so you need to manoeuvre carefully around it to maintain a safe path."}
{"id": "train_07023", "split": "train", "clip_key": "2020-0131-135401_086784_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "086784"}, "frames": ["2020-0131-135401_086784_movie_t-3.jpg", "2020-0131-135401_086784_movie_t-2.jpg", "2020-0131-135401_086784_movie_t-1.jpg", "2020-0131-135401_086784_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes and a metal median runs straight toward a signalized intersection; the pavement looks smooth and traffic in the ego's direction is slow and dense. A gray van directly ahead in the ego lane slows and creeps because of congestion at the intersection, limiting the ego car's pace. In the left adjacent lane, a white van just ahead also slows behind a brown box truck, keeping that lane at a similar pace. Oncoming cars travel steadily in the opposite lanes beyond the median with no immediate interaction. The traffic signal ahead shows green but queues persist under it.", "hazard_reasoning": "There is a gray van slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead at the intersection. The driver should slow down to match the reduced speed of traffic and maintain a safe following distance."}
{"id": "train_07024", "split": "train", "clip_key": "titan_clip_1160_000150_movie", "source": {"subset": "titan", "scenario": "clip_1160", "frame": "000150"}, "frames": ["titan_clip_1160_000150_movie_t-3.jpg", "titan_clip_1160_000150_movie_t-2.jpg", "titan_clip_1160_000150_movie_t-1.jpg", "titan_clip_1160_000150_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban side street with one narrow lane in each direction and no median is shown, the pavement is smooth and traffic appears light with no notable changes. Two white box trucks are stopped along the right curb ahead, one immediately beside the ego lane with its rear door open, narrowing the available space. A pedestrian in a blue shirt and gray pants stands at the rear of this nearer truck on the right, loading it and remaining close to the edge of the ego lane. No moving vehicles are visible ahead or oncoming, and no salient signals or posted speeds are in view.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and gray pants, standing on the right side of the road, because they are loading a truck. The pedestrian may step into the roadway unexpectedly while maneuvering around the vehicle, so drivers should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_07025", "split": "train", "clip_key": "titan_clip_56_000420_movie", "source": {"subset": "titan", "scenario": "clip_56", "frame": "000420"}, "frames": ["titan_clip_56_000420_movie_t-3.jpg", "titan_clip_56_000420_movie_t-2.jpg", "titan_clip_56_000420_movie_t-1.jpg", "titan_clip_56_000420_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street with no median and smooth pavement extends ahead from a small intersection, and traffic is light. A pedestrian in a white shirt ahead crosses mid-block from the left to the right while pulling a small cart, moving through the ego lane toward the right sidewalk and temporarily blocking the path. A box truck stands ahead along the left curb with a cone behind it, unloading and narrowing the same-direction lane. A black van sits at the left edge near the intersection close to the ego vehicle, partly protruding into the lane and limiting the entry space.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, crossing the street in the middle of the road, from the left side to the right side. The pedestrian is in your path and not at a designated crossing point, so you should slow down to avoid a potential collision."}
{"id": "train_07026", "split": "train", "clip_key": "2020-0214-102601_008502_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "008502"}, "frames": ["2020-0214-102601_008502_movie_t-3.jpg", "2020-0214-102601_008502_movie_t-2.jpg", "2020-0214-102601_008502_movie_t-1.jpg", "2020-0214-102601_008502_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cones", "environment_perception": "An urban two-way road with one lane each direction runs uphill between apartments and a fenced sidewalk; the pavement looks smooth and traffic is light. A silver hatchback ahead in the ego lane continues steadily away. On the left curb, two stopped vans with doors open sit beside orange traffic cones, and a person crouches by the nearer vehicle, so the parked vehicles narrow the margin next to the lane. An oncoming small car approaches in its right-side lane and passes without affecting the ego path.", "hazard_reasoning": "There are orange traffic cones on the left side. The cones partially obstruct the lane, so the driver must manoeuvre carefully around them to avoid a collision."}
{"id": "train_07027", "split": "train", "clip_key": "2020-0207-101955_096838_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "096838"}, "frames": ["2020-0207-101955_096838_movie_t-3.jpg", "2020-0207-101955_096838_movie_t-2.jpg", "2020-0207-101955_096838_movie_t-1.jpg", "2020-0207-101955_096838_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway scene inside a tunnel shows two same-direction lanes curving gently right, bounded by concrete walls and a right-side guardrail; the pavement is dry and smooth and traffic is light as the view brightens toward the tunnel exit. A motorcycle ahead in the adjacent right lane continues straight at a steady speed toward the opening, running parallel without entering the ego lane. A small car farther ahead in the left lane proceeds in-lane toward the exit, presently not constraining the ego vehicle's pace. No salient signals or signs are visible.", "hazard_reasoning": "No immediate hazards are visible, so the driver can maintain speed safely through the tunnel."}
{"id": "train_07028", "split": "train", "clip_key": "2020-0226-101332_024887_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "024887"}, "frames": ["2020-0226-101332_024887_movie_t-3.jpg", "2020-0226-101332_024887_movie_t-2.jpg", "2020-0226-101332_024887_movie_t-1.jpg", "2020-0226-101332_024887_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road between tall buildings has smooth pavement and moderate traffic queuing at a signalized intersection. In the ego lane ahead, a black covered truck is stopped for a red light and holds the ego vehicle. To the left, a silver van and a dark sedan in the adjacent lane creep forward and wait at the same light. To the right, a yellow taxi and a small white truck occupy the right lane near a short coned work area, moving slowly and then stopping. The overhead traffic signal shows red, and a road worker stands by the cones on the right outside the travel lanes.", "hazard_reasoning": "There is a black truck stopped in the ego lane, in front of the ego car, because of the red traffic lights. The driver should stop immediately to avoid a rear-end collision and comply with the red traffic signal."}
{"id": "train_07029", "split": "train", "clip_key": "titan_clip_74_000114_movie", "source": {"subset": "titan", "scenario": "clip_74", "frame": "000114"}, "frames": ["titan_clip_74_000114_movie_t-3.jpg", "titan_clip_74_000114_movie_t-2.jpg", "titan_clip_74_000114_movie_t-1.jpg", "titan_clip_74_000114_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential scene shows a narrow two-way street meeting a cross intersection, with no marked lanes or median and smooth pavement; traffic is light with no moving vehicles. Ahead on the left edge of the roadway, a pedestrian wearing a white T-shirt and blue pants stands near the curb in front of the ego car and could step into the ego lane. A red minicar is parked in a recessed driveway at the left corner, and several bicycles are parked along both sides, adding roadside clutter but remaining stationary. No signals or posted speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and blue pants standing on the left side of the road in front of the ego car. The driver should slow down because the pedestrian might step onto the roadway unexpectedly."}
{"id": "train_07030", "split": "train", "clip_key": "titan_clip_712_000348_movie", "source": {"subset": "titan", "scenario": "clip_712", "frame": "000348"}, "frames": ["titan_clip_712_000348_movie_t-3.jpg", "titan_clip_712_000348_movie_t-2.jpg", "titan_clip_712_000348_movie_t-1.jpg", "titan_clip_712_000348_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street between buildings, with no center divider, has dry pavement and light traffic as the ego car proceeds toward a small intersection. A man wearing a black T-shirt and black pants walks in the middle of the lane ahead, moving away and directly occupying the ego path. Farther ahead on the cross street, a white van passes from left to right without entering the lane. A silver car stands stopped at the right curb, narrowing the roadway near the ego. Large stop markings on the pavement indicate a required stop before the junction.", "hazard_reasoning": "There is a man wearing a black T-shirt with Black pants walking in the middle of the road. The driver should slow down to avoid a potential collision with the pedestrian straying into the lane."}
{"id": "train_07031", "split": "train", "clip_key": "2020-0129-105040_066880_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "066880"}, "frames": ["2020-0129-105040_066880_movie_t-3.jpg", "2020-0129-105040_066880_movie_t-2.jpg", "2020-0129-105040_066880_movie_t-1.jpg", "2020-0129-105040_066880_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with stopped vehicle.", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid centerline runs between low-rise buildings; the pavement is smooth and white guardrails line both curbs. Traffic is generally light but temporarily queues near a zebra crossing ahead. Directly ahead in the ego lane, a white van is stopped at the crosswalk because of congestion further along, holding the ego vehicle's path. On the right, a pedestrian stands at the crosswalk near the guardrail, waiting and possibly stepping into the lane, making them relevant to the ego vehicle. Another pedestrian on the left sidewalk walks along the storefronts without approaching the roadway. A pedestrian crossing sign is posted above the crosswalk.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid collision with the stopped vehicle ahead."}
{"id": "train_07032", "split": "train", "clip_key": "titan_clip_8_000246_movie", "source": {"subset": "titan", "scenario": "clip_8", "frame": "000246"}, "frames": ["titan_clip_8_000246_movie_t-3.jpg", "titan_clip_8_000246_movie_t-2.jpg", "titan_clip_8_000246_movie_t-1.jpg", "titan_clip_8_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street with brick paving has no center divider and light, slow traffic; the surface looks smooth, with a dark van parked along the right curb and several bicycles stopped on the left. A pedestrian in a white shirt carrying a bag crosses midblock from right to left directly ahead of the ego vehicle, moving across the lane because there is no crosswalk. An oncoming pedicab cyclist approaches near the center-right, pedaling slowly and constricting the available space. Another pedestrian ahead walks along the left edge of the lane away from the camera, close to the travel path.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a bag, crossing the street in front of the ego car, from the right side to the left side, because there is no crosswalk. The driver should slow down due to the unexpected crossing pedestrian directly in the vehicle's path to avoid a collision."}
{"id": "train_07033", "split": "train", "clip_key": "titan_clip_99_000216_movie", "source": {"subset": "titan", "scenario": "clip_99", "frame": "000216"}, "frames": ["titan_clip_99_000216_movie_t-3.jpg", "titan_clip_99_000216_movie_t-2.jpg", "titan_clip_99_000216_movie_t-1.jpg", "titan_clip_99_000216_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision", "environment_perception": "An urban commercial street with one lane in each direction and no median runs between tall buildings; the pavement is smooth and traffic is light but slows ahead. The ego vehicle proceeds in the left lane with oncoming traffic to the right. A brown van ahead in the ego lane slows due to congestion farther up the road, constraining the ego car's pace. Several pedestrians walk and stand on the right sidewalk near storefronts and cones but remain clear of the roadway. A 30 km/h speed-limit sign and a no-parking sign are posted on the left. Along the left curb, a flatbed truck with a trailer and other parked vehicles narrow the travel lane, and bicycles and cones line the right edge.", "hazard_reasoning": "There is a brown van slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead on the road. The van's reduced speed due to congestion may require sudden braking, so slow down to maintain a safe distance and avoid collision."}
{"id": "train_07034", "split": "train", "clip_key": "2020-0205-103411_010656_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "010656"}, "frames": ["2020-0205-103411_010656_movie_t-3.jpg", "2020-0205-103411_010656_movie_t-2.jpg", "2020-0205-103411_010656_movie_t-1.jpg", "2020-0205-103411_010656_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing", "environment_perception": "A two-way urban street with one lane per direction approaches a signalized intersection, the pavement smooth and traffic light overall. A pedestrian in a black coat is ahead in the middle of the road, walking toward the right side as they cross, momentarily occupying the ego vehicle's path. A blue flatbed truck stands at the right corner of the cross street, slightly nosed toward the intersection as if waiting to enter, posing a possible interruption to the ego lane. Farther ahead, a few oncoming cars in the right-side lanes proceed straight through the junction. Overhead signals and prominent zebra crossings are visible, with no median beyond painted center markings and no unusual obstacles.", "hazard_reasoning": "There is a pedestrian wearing a black coat, crossing the street, and walking in the middle of the road, toward the right side. The pedestrian's position in the lane creates a collision risk, so the driver should remain vigilant and ready to adjust speed."}
{"id": "train_07035", "split": "train", "clip_key": "titan_clip_576_000318_movie", "source": {"subset": "titan", "scenario": "clip_576", "frame": "000318"}, "frames": ["titan_clip_576_000318_movie_t-3.jpg", "titan_clip_576_000318_movie_t-2.jpg", "titan_clip_576_000318_movie_t-1.jpg", "titan_clip_576_000318_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban two-way street with one narrow lane each way runs between mid-rise buildings; the asphalt is dry and smooth, traffic is light, and no oncoming vehicles appear. A small white truck ahead in the left-side ego lane proceeds slowly near the curb, limiting the ego vehicle's pace. Farther ahead near the center-right, a cyclist rides away along the roadway and drifts slightly toward the lane, potentially affecting the ego path. On the right side of the road, a pedestrian in a black shirt stands by the sidewalk near shop banners, stationary close to the curb and possibly stepping out.", "hazard_reasoning": "There is a pedestrian wearing a black shirt standing on the right side of the road. The driver should manoeuvre carefully to avoid a collision since the pedestrian may step into the lane unexpectedly."}
{"id": "train_07036", "split": "train", "clip_key": "titan_clip_4_000180_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_4_000180_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_4_000180_movie_t-3_augB1.jpg", "titan_clip_4_000180_movie_t-2_augB1.jpg", "titan_clip_4_000180_movie_t-1_augB1.jpg", "titan_clip_4_000180_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban shopping street with brick paving and no center divider runs straight between storefronts, the ego car proceeding along a single shared lane in light, slow traffic. Far ahead in the same lane, a white van moves away at low speed, effectively setting the pace. In the center of the roadway ahead, a pedestrian wearing black pants and carrying a bag walks away from the ego vehicle in the middle of the lane, occupying the ego path. Closer to the left, small groups of pedestrians stand and mill near the curb outside shops, some edging toward the lane and potentially stepping out. On the right, another pedestrian walks along the edge by a driveway with cones, keeping close to the storefronts.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying a bag who is walking in the middle of the road, away from the ego car. The pedestrian is walking in the middle of the road ahead; the driver should carefully manoeuvre around them to avoid collision."}
{"id": "train_07037", "split": "train", "clip_key": "2020-0218-103119_005844_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "005844"}, "frames": ["2020-0218-103119_005844_movie_t-3.jpg", "2020-0218-103119_005844_movie_t-2.jpg", "2020-0218-103119_005844_movie_t-1.jpg", "2020-0218-103119_005844_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian on your left", "environment_perception": "A narrow urban residential two-way street with no median and smooth pavement stretches ahead, and traffic is very light with no moving vehicles in either direction. On the left edge just ahead, a pedestrian carrying bags walks away from the ego car along the curb, moving in the same direction and close to the travel lane, so they may enter the ego lane. A small cross street appears ahead with a white transverse line. A parked scooter sits on the left near the pedestrian, while bicycles and several traffic cones line the right curb by a building, slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian carrying bags, walking on the left side of the road, away from the ego car. The pedestrian's proximity to the travel lane means they could enter your path unexpectedly, so you should be aware of their presence and adjust your driving accordingly."}
{"id": "train_07038", "split": "train", "clip_key": "2020-0127-132751_005651_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "005651"}, "frames": ["2020-0127-132751_005651_movie_t-3.jpg", "2020-0127-132751_005651_movie_t-2.jpg", "2020-0127-132751_005651_movie_t-1.jpg", "2020-0127-132751_005651_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth asphalt, chevron markings and a red painted left-side lane has no physical median visible, and traffic is queued at a signal with flow temporarily stopped. Directly ahead in the ego lane, a black dump truck stands still because the traffic light ahead is red, holding the ego vehicle. In the adjacent right lane, a black car creeps forward alongside, remaining in its lane and posing a close parallel presence. Slightly ahead in the middle lane, a white van waits with brake lights on, ready to proceed when the signal changes. Other vehicles line up to the left, reinforcing the short stop at the intersection.", "hazard_reasoning": "There is a black truck stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver must stop to avoid colliding with the halted truck at the red light."}
{"id": "train_07039", "split": "train", "clip_key": "2020-0129-144857_021063_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "021063"}, "frames": ["2020-0129-144857_021063_movie_t-3.jpg", "2020-0129-144857_021063_movie_t-2.jpg", "2020-0129-144857_021063_movie_t-1.jpg", "2020-0129-144857_021063_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to the stopped sedan ahead", "environment_perception": "An urban multi-lane city street with two same-direction lanes, a right-side guardrail, and smooth dry pavement carries heavy stop-and-go traffic. Directly ahead, a black sedan in the ego lane is stopped in the queue for a flashing traffic light at the intersection ahead, holding the ego car. Farther ahead in the same lane, a tall white box truck remains stopped and limits forward visibility, further constraining the lane's movement. To the left, a silver van alongside creeps forward in the adjacent lane, preventing an easy lane change. Overhead green direction signs indicate Routes 509 and 23 and expressway E4.", "hazard_reasoning": "There is a black sedan stopped in front of the ego-car, in the ego lane, because of the flashing traffic light ahead at the intersection. The driver should yield to the stopped sedan to avoid a rear-end collision and obey the traffic signal."}
{"id": "train_07040", "split": "train", "clip_key": "titan_clip_593_000036_movie", "source": {"subset": "titan", "scenario": "clip_593", "frame": "000036"}, "frames": ["titan_clip_593_000036_movie_t-3.jpg", "titan_clip_593_000036_movie_t-2.jpg", "titan_clip_593_000036_movie_t-1.jpg", "titan_clip_593_000036_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the van", "environment_perception": "An urban two-way street with narrow single lanes and no median; the ego vehicle travels in the left lane on worn pavement, and traffic is light with no oncoming vehicles passing. A gray van ahead near the left edge is stopped on the left side of the road in front of the ego-car, partially occupying the ego lane and constraining progress. A pedestrian on the right sidewalk walks away ahead, keeping to the curb. Another person farther ahead on the left sidewalk stands near a sign but remains outside the lane. Parked vehicles within a lot line the left side but stay clear of the roadway.", "hazard_reasoning": "There is a gray van stopped, on the left side of the road, in front of the ego-car. The stopped van could obstruct the lane and requires careful maneuvering to avoid a collision under this situation."}
{"id": "train_07041", "split": "train", "clip_key": "titan_clip_460_000432_movie", "source": {"subset": "titan", "scenario": "clip_460", "frame": "000432"}, "frames": ["titan_clip_460_000432_movie_t-3.jpg", "titan_clip_460_000432_movie_t-2.jpg", "titan_clip_460_000432_movie_t-1.jpg", "titan_clip_460_000432_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the group of pedestrians", "environment_perception": "An urban two-way street runs between close-set buildings with no median; the asphalt is mostly smooth with a patched section and a manhole, and traffic is light. A small truck ahead in the ego lane moves slowly along the center of the roadway, constraining the ego vehicle's pace. On the left side, a group of pedestrians walks toward the ego car along the curb, close to the travel lane and may enter the ego lane. On the right, two pedestrians in the foreground also walk toward the camera beside the lane line, with one very near the edge of the roadway.", "hazard_reasoning": "There is a group of pedestrians walking together on the left side of the road, toward the ego car. These pedestrians may enter the roadway unexpectedly, so the driver should manoeuvre around them to avoid a collision."}
{"id": "train_07042", "split": "train", "clip_key": "titan_clip_918_000282_movie", "source": {"subset": "titan", "scenario": "clip_918", "frame": "000282"}, "frames": ["titan_clip_918_000282_movie_t-3.jpg", "titan_clip_918_000282_movie_t-2.jpg", "titan_clip_918_000282_movie_t-1.jpg", "titan_clip_918_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "A narrow urban commercial street with one undivided lane, dry pavement, and light traffic is seen between storefronts, with bollards on the right and cones along the left curb. A silver minivan is parked on the left. On the left edge near this vehicle, a pedestrian in a gray suit walks away from the ego car along the curb. Farther ahead in the middle of the lane, another pedestrian walks away in the roadway and may constrain the ego vehicle's pace. On the right by the Mister Donut storefront, pedestrians move along the sidewalk and remain off the carriageway. No traffic signals or speed signs are clearly visible, and bicycles are parked by the shops without blocking the lane.", "hazard_reasoning": "There is a pedestrian wearing a gray suit, walking on the left side of the road, away from the ego car. The pedestrian could step into the lane unexpectedly, so the driver should be aware of their presence."}
{"id": "train_07043", "split": "train", "clip_key": "titan_clip_587_000522_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_587_000522_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_587_000522_movie_t-3_augB1.jpg", "titan_clip_587_000522_movie_t-2_augB1.jpg", "titan_clip_587_000522_movie_t-1_augB1.jpg", "titan_clip_587_000522_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street lined by mid-rise buildings has smooth pavement, no centerline, and light, slow traffic. In the middle of the lane ahead, a pedestrian wearing a gray shirt and beige pants walks toward the left side of the road, moving across the ego path. A large delivery truck passes close along the left side of the ego vehicle, reducing lateral clearance. Farther ahead by the left curb, a small truck is stopped and slightly narrows the usable lane. On the right, a silver car sits stationary in a paid parking bay. A parking sign and price board are visible on the right, and a cardboard box on a cart stands near the curb.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and beige pants in middle of the road, walking toward the left side of the road. The pedestrian's position in the lane poses a collision risk, so the driver should slow down under this situation."}
{"id": "train_07044", "split": "train", "clip_key": "titan_clip_279_000654_movie", "source": {"subset": "titan", "scenario": "clip_279", "frame": "000654"}, "frames": ["titan_clip_279_000654_movie_t-3.jpg", "titan_clip_279_000654_movie_t-2.jpg", "titan_clip_279_000654_movie_t-1.jpg", "titan_clip_279_000654_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban side street with a narrow single-lane passage and sound pavement meets the ego road; orange cones line the left edge to form a temporary channel, and traffic is light with no vehicles immediately ahead. At the mouth of the street, a pedestrian wearing a gray vest stands in front of the ego car with arms out, directing traffic and holding the vehicle. Another pedestrian crosses from left to right directly in front of the bumper, and a second walker follows a few steps ahead in the same direction, both prioritized by the traffic controller. Farther ahead near the right-hand storefronts, a small handcart with stacked crates occupies part of the lane.", "hazard_reasoning": "There is a pedestrian wearing a gray vest, standing in front of the ego car, because they are directing traffic. The driver must stop because the traffic controller may allow or halt movement unpredictably, requiring clear right-of-way control."}
{"id": "train_07045", "split": "train", "clip_key": "2020-0207-101955_084218_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "084218"}, "frames": ["2020-0207-101955_084218_movie_t-3.jpg", "2020-0207-101955_084218_movie_t-2.jpg", "2020-0207-101955_084218_movie_t-1.jpg", "2020-0207-101955_084218_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway ramp with high sound barriers confines a single left-side lane, separated by a guardrail from a parallel same-direction lane on the right; the pavement is smooth and traffic is light as the road heads toward an overpass. A blue truck ahead in the ego lane slows, constraining the ego car's pace. A white van travels slightly ahead in the parallel right lane, continuing straight and remaining separated by the barrier. An overpass looms ahead, briefly shading the roadway but presenting no obstruction.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_07046", "split": "train", "clip_key": "2020-0131-135401_011936_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "011936"}, "frames": ["2020-0131-135401_011936_movie_t-3.jpg", "2020-0131-135401_011936_movie_t-2.jpg", "2020-0131-135401_011936_movie_t-1.jpg", "2020-0131-135401_011936_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction and a solid yellow centerline runs between mid-rise buildings; the pavement looks smooth and traffic is moderate. A white dump truck directly ahead in the ego lane accelerates away on a green signal, opening a growing gap as both vehicles proceed through the intersection. An oncoming black car in the right-side lane continues straight through the same crossing without encroaching on the ego path. A pedestrian on the right sidewalk waits by the crosswalk as vehicles pass. Overhead signals show green for the ego direction, and a narrow bicycle lane lines the left curb.", "hazard_reasoning": "There is a white dump truck accelerating away from the ego car, in the ego lane, because of a green traffic light. The green signal indicates a change that requires the driver to begin moving promptly to maintain safe traffic flow and avoid hesitation."}
{"id": "train_07047", "split": "train", "clip_key": "titan_clip_501_000180_movie", "source": {"subset": "titan", "scenario": "clip_501", "frame": "000180"}, "frames": ["titan_clip_501_000180_movie_t-3.jpg", "titan_clip_501_000180_movie_t-2.jpg", "titan_clip_501_000180_movie_t-1.jpg", "titan_clip_501_000180_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with block-paved surface and no centerline runs between dense storefronts, and traffic is light as the ego vehicle proceeds along the left side. In the center ahead, a pedestrian in an orange dress carrying an umbrella and handbag walks toward the camera in the middle of the roadway, directly in the ego path. Farther ahead, an oncoming bicyclist rides toward the ego near the center of the street, converging on the same space. A silver van ahead on the left moves slowly and edges toward the curb as if pulling over, reducing clearance in the lane. Roadside vending machines and signboards crowd the curb but do not intrude into the roadway.", "hazard_reasoning": "There is a pedestrian wearing an orange dress, carrying an umbrella and handbag, walking in the middle of the road, towards the ego car. The driver should carefully manoeuvre around the pedestrian to avoid collision as they are directly in the vehicle's path."}
{"id": "train_07048", "split": "train", "clip_key": "titan_clip_924_000246_movie", "source": {"subset": "titan", "scenario": "clip_924", "frame": "000246"}, "frames": ["titan_clip_924_000246_movie_t-3.jpg", "titan_clip_924_000246_movie_t-2.jpg", "titan_clip_924_000246_movie_t-1.jpg", "titan_clip_924_000246_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban two-way street with no median and smooth pavement runs between mid-rise buildings, and traffic is light as the ego vehicle proceeds slightly downhill toward a cross street. Ahead on the left in the ego lane, a gray van is stopped while being unloaded, occupying part of the lane and forming a partial obstruction. A person stands at the rear of this van handling items close to the lane edge. Farther ahead in the same direction, a small dark car continues straight toward the distant intersection. On the right shoulder, a white van is parked in a recessed bay with other curbside parking.", "hazard_reasoning": "There is a gray van stopped on the left side of the street, in the ego lane, because it is being unloaded. The stopped van blocks the travel lane and poses a collision risk; the driver should manoeuvre around it carefully to pass safely."}
{"id": "train_07049", "split": "train", "clip_key": "titan_clip_528_000114_movie", "source": {"subset": "titan", "scenario": "clip_528", "frame": "000114"}, "frames": ["titan_clip_528_000114_movie_t-3.jpg", "titan_clip_528_000114_movie_t-2.jpg", "titan_clip_528_000114_movie_t-1.jpg", "titan_clip_528_000114_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Be aware of cyclist waiting to cross", "environment_perception": "An urban boulevard with a narrow median island and smooth pavement leads to a wide signalized intersection, and traffic appears light to moderate. Ahead in the intersection, a white hatchback coming from the right crosses in front of the ego lane while turning, momentarily occupying the path. Farther ahead in the same direction, a box truck in the left lane continues straight through the junction and effectively sets the pace. On the right corner, a cyclist wearing a blue T-shirt waits to cross at the intersection and may enter the crosswalk when the light allows.", "hazard_reasoning": "There is a cyclist wearing a blue t-shirt, waiting to cross at the right side of the intersection. Be aware of the cyclist as they may enter the roadway unexpectedly."}
{"id": "train_07050", "split": "train", "clip_key": "2020-0210-101957_041524_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "041524"}, "frames": ["2020-0210-101957_041524_movie_t-3.jpg", "2020-0210-101957_041524_movie_t-2.jpg", "2020-0210-101957_041524_movie_t-1.jpg", "2020-0210-101957_041524_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial carries two lanes in the ego direction on smooth, dry pavement, separated from oncoming traffic by a low hedge median. Traffic ahead in the ego lane is light with clear space, while the opposite side has a moderate flow. To the right beyond the median, several white vans and a green truck approach steadily in the oncoming lanes, contained by the divider and not affecting the ego path. Overhead gantries display a 50 speed limit and a prohibition sign with a truck icon.", "hazard_reasoning": "The road ahead appears clear with no hazards detected, so the driver can continue driving safely."}
{"id": "train_07051", "split": "train", "clip_key": "titan_clip_191_000234_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_191_000234_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_191_000234_movie_t-3_augB1.jpg", "titan_clip_191_000234_movie_t-2_augB1.jpg", "titan_clip_191_000234_movie_t-1_augB1.jpg", "titan_clip_191_000234_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban narrow one-lane alley runs between tall buildings with smooth asphalt and no median, and traffic is light with no moving vehicles except a pedestrian. A tall pedestrian wearing a brown T-shirt and blue pants, carrying a handbag, moves from the left side to the right directly in front of the ego-car, crossing the lane and momentarily blocking the path. Parked cars and bicycles line the right side, including a white van ahead at the curb, narrowing the passage.", "hazard_reasoning": "There is a tall pedestrian wearing a brown t-shirt, blue pants and carrying a handbag, crossing the street from the left side to the right side in front of the ego-car. The pedestrian is entering the vehicle's path, creating a hazard that requires the driver to manoeuvre carefully to avoid a collision."}
{"id": "train_07052", "split": "train", "clip_key": "titan_clip_1368_000432_movie", "source": {"subset": "titan", "scenario": "clip_1368", "frame": "000432"}, "frames": ["titan_clip_1368_000432_movie_t-3.jpg", "titan_clip_1368_000432_movie_t-2.jpg", "titan_clip_1368_000432_movie_t-1.jpg", "titan_clip_1368_000432_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian crossing ahead", "environment_perception": "A quiet urban street with smooth dry pavement and no centerline extends ahead, curving gently to the right, and traffic is light. The ego vehicle proceeds along the left side beside buildings and a walled sidewalk with railings. On the left near the curb, a pedestrian begins crossing toward the right side of the road, moving diagonally across the lane and potentially entering the vehicle's path. Farther ahead near the center, a cyclist travels away in the same direction near the middle of the roadway, likely to influence the ego vehicle's pace. No traffic signals or other vehicles are visible.", "hazard_reasoning": "There is a pedestrian on the left side of the road, crossing the right side of the road. The pedestrian may step into the vehicle's path unexpectedly, so the driver should be cautious."}
{"id": "train_07053", "split": "train", "clip_key": "titan_clip_1141_000210_movie", "source": {"subset": "titan", "scenario": "clip_1141", "frame": "000210"}, "frames": ["titan_clip_1141_000210_movie_t-3.jpg", "titan_clip_1141_000210_movie_t-2.jpg", "titan_clip_1141_000210_movie_t-1.jpg", "titan_clip_1141_000210_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential street with a single narrow two-way lane and smooth asphalt runs between apartment blocks; traffic is light with no moving vehicles visible, and the right side is lined by scaffolding, a roadside container, and several covered parked cars that narrow the roadway. Ahead on the right edge, a woman wearing a white dress and carrying a handbag walks along the curb toward the camera, close to the ego lane and potentially stepping into it. No oncoming vehicles or cyclists are present, and no traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a lady, wearing a white dress, carrying a handbag, walking, on the right side of the road. The pedestrian is walking on the roadway edge, so the driver should slow down to maintain safe distance and reaction time, minimizing the risk of collision."}
{"id": "train_07054", "split": "train", "clip_key": "2020-0218-103119_018217_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "018217"}, "frames": ["2020-0218-103119_018217_movie_t-3.jpg", "2020-0218-103119_018217_movie_t-2.jpg", "2020-0218-103119_018217_movie_t-1.jpg", "2020-0218-103119_018217_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs between mid-rise buildings, the pavement dry and in good condition, with moderate, steady traffic. A white minivan directly ahead in the ego lane accelerates, opening a gap in front of the camera vehicle. A yellow sedan is stopped at the left curb just ahead, close to the lane and potentially pulling out into the ego path. Farther ahead in the adjacent right same-direction lane, a white box truck proceeds slowly, constraining overtaking options. To the right, oncoming traffic moves steadily in its own lanes separated from the ego side. No-parking signs are posted along the left sidewalk.", "hazard_reasoning": "There is a white minivan accelerating in the ego lane. Maintaining a safe following distance ensures the driver can respond to its speed changes and avoid potential collisions."}
{"id": "train_07055", "split": "train", "clip_key": "2020-0207-101955_076038_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "076038"}, "frames": ["2020-0207-101955_076038_movie_t-3.jpg", "2020-0207-101955_076038_movie_t-2.jpg", "2020-0207-101955_076038_movie_t-1.jpg", "2020-0207-101955_076038_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for traffic congestion ahead", "environment_perception": "An urban expressway segment runs through a narrow corridor with high noise walls and continuous concrete barriers on both sides, effectively forming a single lane with dry, intact pavement, and traffic is at a standstill. Directly ahead in the ego lane, a blue flatbed truck is stopped because of traffic congestion ahead, fully blocking the path and dictating the ego vehicle's pace. The temporary barrier-lined work-zone feel and an overpass just ahead further restrict the lane and limit forward visibility.", "hazard_reasoning": "There is a blue truck stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary truck caused by the congestion."}
{"id": "train_07056", "split": "train", "clip_key": "2020-0214-102601_057115_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "057115"}, "frames": ["2020-0214-102601_057115_movie_t-3.jpg", "2020-0214-102601_057115_movie_t-2.jpg", "2020-0214-102601_057115_movie_t-1.jpg", "2020-0214-102601_057115_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road beneath elevated expressways has smooth pavement and a right-side guardrail, with moderate same-direction traffic queuing toward an intersection. A blue SUV directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. To the left, a gray sedan in the adjacent lane creeps forward in the queue beside the ego car, affecting lane positioning. Farther ahead on the left, a white hatchback waits near the stop line at the head of the queue. The overhead signal shows red.", "hazard_reasoning": "There is a blue SUV stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid colliding with the halted vehicle and obey the red signal."}
{"id": "train_07057", "split": "train", "clip_key": "titan_clip_909_000468_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_909_000468_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_909_000468_movie_t-3_augB1.jpg", "titan_clip_909_000468_movie_t-2_augB1.jpg", "titan_clip_909_000468_movie_t-1_augB1.jpg", "titan_clip_909_000468_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "An urban commercial street with a narrow two-way carriageway and no median is shown, the ego vehicle keeping left; the asphalt appears slightly worn and vehicular flow is light amid heavy pedestrian activity. On the right side of the ego lane just ahead, a pedestrian wearing a red T-shirt and striped pants walks toward the camera along the roadway, likely to enter the ego path. Farther ahead near the center of the lane, several pedestrians proceed away from the camera along the street, constraining the ego vehicle's speed. To the left, a small truck is parked with cones while a worker and nearby shoppers move around it, and one person crosses from the left edge toward the right, briefly occupying the lane.", "hazard_reasoning": "There is a pedestrian wearing a red t-shirt and striped pants walking on the right side of the ego lane in front and toward the ego car. The pedestrian is entering the vehicle's path in the ego lane, so the driver needs to carefully manoeuvre to avoid collision."}
{"id": "train_07058", "split": "train", "clip_key": "2020-0131-135401_013357_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "013357"}, "frames": ["2020-0131-135401_013357_movie_t-3.jpg", "2020-0131-135401_013357_movie_t-2.jpg", "2020-0131-135401_013357_movie_t-1.jpg", "2020-0131-135401_013357_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane per direction and no median leads to a small intersection; the pavement looks smooth and traffic is light. A white van ahead drives in the middle of the intersection across the ego vehicle's path and continues through. A dark sedan in the oncoming lane proceeds straight through the junction, remaining separate from the ego lane. Several pedestrians on both sidewalks near the corners walk and wait by the crosswalk at the intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07059", "split": "train", "clip_key": "2020-0227-104226_042908_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "042908"}, "frames": ["2020-0227-104226_042908_movie_t-3.jpg", "2020-0227-104226_042908_movie_t-2.jpg", "2020-0227-104226_042908_movie_t-1.jpg", "2020-0227-104226_042908_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban two-way road with smooth pavement and a single lane per direction runs between mid-rise buildings, divided by a solid yellow centerline; traffic is light to moderate. A white hatchback directly ahead in the ego lane slows because a slower vehicle in front of it is reducing speed, and it constrains the ego car's pace. Farther ahead in the same lane, a white delivery truck proceeds slowly near an upcoming signalized intersection, setting the flow for the queue. Oncoming cars travel steadily in the right-side lanes and remain clear of the ego path. Overhead traffic signals are visible ahead with no other obstructions.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, in front of the ego car, because of slowing vehicle ahead. The white hatchback's deceleration may require you to reduce speed to maintain a safe following distance and avoid a collision under this situation."}
{"id": "train_07060", "split": "train", "clip_key": "titan_clip_476_000168_movie", "source": {"subset": "titan", "scenario": "clip_476", "frame": "000168"}, "frames": ["titan_clip_476_000168_movie_t-3.jpg", "titan_clip_476_000168_movie_t-2.jpg", "titan_clip_476_000168_movie_t-1.jpg", "titan_clip_476_000168_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around slowing van", "environment_perception": "A dense urban shopping street has a single narrow undivided lane paved with bricks, with bollards along both curbs and the surface dry and intact. Traffic is light with no oncoming vehicles visible. A gray van ahead in the ego lane slows in front of the car, constraining the pace. On the left at the near curb, a man walks toward the roadway and then continues along the edge, close to the path. Farther ahead on the left sidewalk, two pedestrians move parallel to traffic near the bollards and may drift toward the lane. A corner convex mirror is mounted on the right.", "hazard_reasoning": "There is a gray van slowing down in front of the ego car, in the ego lane. The driver should manoeuvre around the slowing van to maintain safe distance and avoid a collision."}
{"id": "train_07061", "split": "train", "clip_key": "2020-0131-103016_075908_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "075908"}, "frames": ["2020-0131-103016_075908_movie_t-3.jpg", "2020-0131-103016_075908_movie_t-2.jpg", "2020-0131-103016_075908_movie_t-1.jpg", "2020-0131-103016_075908_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement carries moderate, steadily moving traffic; lanes are divided by painted lines and a pedestrian footbridge spans overhead. A small box truck is directly ahead in the ego lane, traveling at a similar speed and effectively setting the pace. Another box truck runs slightly ahead in the adjacent right lane with a dark hatchback close behind it, the hatchback edging toward the center and possibly merging into the ego lane. A white van progresses alongside on the right, a little ahead of the camera car and maintaining a parallel trajectory. Several taxis and cars line the left curb farther back, stopped or slow, but they remain outside the travel lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07062", "split": "train", "clip_key": "2020-0220-151845_040445_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "040445"}, "frames": ["2020-0220-151845_040445_movie_t-3.jpg", "2020-0220-151845_040445_movie_t-2.jpg", "2020-0220-151845_040445_movie_t-1.jpg", "2020-0220-151845_040445_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, bounded by a concrete barrier on the left and a solid yellow line separating the ego lane from lanes to the right; the pavement is dry and traffic is heavy and slow. A red flatbed truck covered with a yellow tarp travels directly ahead in the ego lane, slowing because congestion builds ahead, and it sets the ego car's pace. To the right, a line of cars, including a silver van and a black sedan, inches forward beside the ego vehicle, occupying the adjacent lanes and preventing an easy pass. Large support columns line the center, slightly limiting forward visibility, and no other hazards appear.", "hazard_reasoning": "There is a red truck slowing down in front of the ego car, because of traffic congestion ahead. Slowing down helps maintain a safe following distance and prevents a collision."}
{"id": "train_07063", "split": "train", "clip_key": "2020-0206-142535_017699_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-142535_017699_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-142535_017699_movie_t-3_augB1.jpg", "2020-0206-142535_017699_movie_t-2_augB1.jpg", "2020-0206-142535_017699_movie_t-1_augB1.jpg", "2020-0206-142535_017699_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down.", "environment_perception": "A dense urban arterial with multi-lane left-hand traffic runs between high-rise buildings on dry, smooth pavement, and the flow is heavy and slow. Ahead in the ego lane, a gray SUV slows because congestion forms in front, directly constraining the ego vehicle's pace. Slightly farther ahead and to the left, a tall box truck creeps in the adjacent lane, moving with the queue and reducing forward gaps. On the left beside the ego, a black crossover travels at a similar slow speed, limiting room to merge. Overhead blue destination signs span the road, and pedestrians move along the fenced sidewalk on the right behind a barrier.", "hazard_reasoning": "A gray SUV slowing down in front of the ego car, because of traffic congestion ahead. This indicates a buildup of vehicles ahead, so the driver should slow down to maintain a safe distance and prevent a collision."}
{"id": "train_07064", "split": "train", "clip_key": "titan_clip_1182_000576_movie", "source": {"subset": "titan", "scenario": "clip_1182", "frame": "000576"}, "frames": ["titan_clip_1182_000576_movie_t-3.jpg", "titan_clip_1182_000576_movie_t-2.jpg", "titan_clip_1182_000576_movie_t-1.jpg", "titan_clip_1182_000576_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow two-way urban street with no median and worn asphalt runs straight between buildings; traffic is light and the ego vehicle slows as pedestrians occupy the lane. Ahead in the ego lane, a man wearing black shorts, a white T-shirt, white-and-black shoes, and a backpack walks across the roadway directly in the vehicle's path. Just ahead, several other pedestrians cross from the left to the right side of the street in front of the car, further constraining its lane. Farther ahead, a small white van continues along the street in the same direction at distance. A parked scooter with a person standing beside it sits at the right curb, outside the travel lane.", "hazard_reasoning": "There is a man wearing a pair of black shorts, a white T-shirt, white and black shoes, carrying a backpack, walking in the ego lane. Manoeuvre carefully around the pedestrian to avoid a collision since he is in your driving path."}
{"id": "train_07065", "split": "train", "clip_key": "titan_clip_1182_000102_movie", "source": {"subset": "titan", "scenario": "clip_1182", "frame": "000102"}, "frames": ["titan_clip_1182_000102_movie_t-3.jpg", "titan_clip_1182_000102_movie_t-2.jpg", "titan_clip_1182_000102_movie_t-1.jpg", "titan_clip_1182_000102_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian crossing", "environment_perception": "An urban, narrow two-way street with one lane each direction and no median shows worn but dry pavement and light vehicle traffic as the ego car moves slowly in the left lane. On the right curb near the camera, a pedestrian in a black shirt and white skirt steps off the sidewalk and starts crossing toward the left, potentially entering the ego lane. Ahead on the left edge, a pedestrian walks away along the lane beside a stopped van, narrowing clearance and constraining the pace. Farther ahead near the right side, a person pushes a red handcart along the storefronts, moving parallel and not crossing. A small van on the left is stopped with its rear hatch open and partly in the lane, while a parked minivan on the right tightens the corridor.", "hazard_reasoning": "There is a pedestrian wearing a back shirt and a white skirt, on the right side of the street, crossing to the left side of the street. The driver should yield to allow the pedestrian to cross safely."}
{"id": "train_07066", "split": "train", "clip_key": "2020-0210-101957_019160_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "019160"}, "frames": ["2020-0210-101957_019160_movie_t-3.jpg", "2020-0210-101957_019160_movie_t-2.jpg", "2020-0210-101957_019160_movie_t-1.jpg", "2020-0210-101957_019160_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of cutting motorcycle", "environment_perception": "An urban arterial with three same-direction lanes and smooth pavement runs amid dense buildings, and traffic remains heavy and slow. Directly ahead, a black motorcycle merges from the left into the ego lane and takes the gap in front, so the ego vehicle settles behind it. Farther ahead in the same lane, a white van inches forward in the queue and constrains the motorcycle's speed. To the right, a large silver box truck proceeds slowly in the adjacent lane, limiting visibility and making a right-lane change difficult. Overhead blue signs provide route guidance toward Route 8 destinations including Tetsugakudo and Mejiro.", "hazard_reasoning": "There is a black motorcycle cutting in front of the ego car from the left lane. This unexpected maneuver could force the driver to brake or swerve, so be aware of the motorcycle's movement."}
{"id": "train_07067", "split": "train", "clip_key": "titan_clip_1352_000552_movie", "source": {"subset": "titan", "scenario": "clip_1352", "frame": "000552"}, "frames": ["titan_clip_1352_000552_movie_t-3.jpg", "titan_clip_1352_000552_movie_t-2.jpg", "titan_clip_1352_000552_movie_t-1.jpg", "titan_clip_1352_000552_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to cyclist crossing ahead.", "environment_perception": "An urban residential scene shows a narrow two-way road without a centerline, climbing slightly and bending right, bordered by guardrails; the wet pavement points to recent rain and traffic is light. Ahead on the left near a small side street, a cyclist wearing a black shirt rides across the roadway away from the ego-car toward the side street, briefly entering the ego lane. Farther ahead at the left corner by the wall, another cyclist is stopped with a foot down beside the curb, not moving into the lane. No traffic signals or speed signs are visible, and the rightward curve and walls create a partial blind approach.", "hazard_reasoning": "There is a cyclist wearing a black shirt and crossing the street, on the left side of the intersection, away from the ego-car. Because the cyclist is crossing ahead on the left side, the driver should yield to avoid a collision."}
{"id": "train_07068", "split": "train", "clip_key": "titan_clip_1345_000048_movie", "source": {"subset": "titan", "scenario": "clip_1345", "frame": "000048"}, "frames": ["titan_clip_1345_000048_movie_t-3.jpg", "titan_clip_1345_000048_movie_t-2.jpg", "titan_clip_1345_000048_movie_t-1.jpg", "titan_clip_1345_000048_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A dense urban commercial street appears, a very narrow two-way road without a centerline and with smooth asphalt; traffic is light and slow because the corridor is constrained. A white van ahead in the ego lane eases to a stop by the left curb, holding the ego vehicle behind it. On the left sidewalk, a pedestrian moves beside the van near its rear, staying at the curb. Farther ahead, a box truck continues straight in the same direction and leads a small queue down the street. Parked cars along the left and several bicycles and shop displays on the right encroach into the roadway and reduce clearance; no traffic signals or notable signs are visible.", "hazard_reasoning": "Although there are no immediate hazards, parked vehicles obscure the view, so the driver should remain vigilant."}
{"id": "train_07069", "split": "train", "clip_key": "2020-0220-102630_102445_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "102445"}, "frames": ["2020-0220-102630_102445_movie_t-3.jpg", "2020-0220-102630_102445_movie_t-2.jpg", "2020-0220-102630_102445_movie_t-1.jpg", "2020-0220-102630_102445_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes and opposite lanes to the right approaches a signalized intersection; the asphalt is dry and smooth, and traffic is moderate and moving. A dark, tarp-covered truck directly ahead in the ego lane accelerates away through the intersection as the light ahead is green, opening space to the ego car. To the left, a white van in the adjacent same-direction lane proceeds straight at a steady speed alongside, constraining a lane change. Near the far right curb beyond the junction, a small truck is parked, remaining outside the travel lane.", "hazard_reasoning": "There is a black truck accelerating in the ego lane, away from the ego car, because of a green traffic light. You should start moving to proceed safely through the green light."}
{"id": "train_07070", "split": "train", "clip_key": "2020-0220-102630_024056_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "024056"}, "frames": ["2020-0220-102630_024056_movie_t-3.jpg", "2020-0220-102630_024056_movie_t-2.jpg", "2020-0220-102630_024056_movie_t-1.jpg", "2020-0220-102630_024056_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road approaches a signalized intersection with a zebra crossing; the pavement is in good condition and traffic is moderate, moving slowly. A white box truck ahead in the ego lane slows toward the crosswalk, constraining the ego car's pace. To the right, a smaller covered truck travels slightly ahead in the adjacent same-direction lane and continues forward through the junction, running parallel to the ego vehicle. From the left, two cyclists ride across the crosswalk in front of the ego path, prompting the vehicles ahead to creep and wait. Farther ahead beyond the intersection, additional trucks proceed in the same direction at low speed.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The leading truck's speed reduction could require the driver to reduce speed to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_07071", "split": "train", "clip_key": "titan_clip_759_000084_movie", "source": {"subset": "titan", "scenario": "clip_759", "frame": "000084"}, "frames": ["titan_clip_759_000084_movie_t-3.jpg", "titan_clip_759_000084_movie_t-2.jpg", "titan_clip_759_000084_movie_t-1.jpg", "titan_clip_759_000084_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban commercial street has a narrow two-way carriageway without a median and smooth pavement; vehicle flow is light but pedestrian activity is heavy as the ego car proceeds in the left lane. Several pedestrians ahead occupy the center of the roadway and drift across the ego lane, constraining the available space and pace. On the left side, a man wearing blue pants, carrying a backpack, walks away from the ego car along the road edge and could edge into the lane. A dark car approaches far ahead in the opposing lane, moving straight and staying clear of the ego path. Cones line both curbs, and a parked truck with bicycles on the left tightens the roadside.", "hazard_reasoning": "There is a man wearing blue pants, carrying a backpack, and walking on the left side of the road, away from the ego car. The pedestrian could step into the driving lane unexpectedly, so the driver should slow down to maintain a safe distance and reaction time."}
{"id": "train_07072", "split": "train", "clip_key": "titan_clip_357_000204_movie", "source": {"subset": "titan", "scenario": "clip_357", "frame": "000204"}, "frames": ["titan_clip_357_000204_movie_t-3.jpg", "titan_clip_357_000204_movie_t-2.jpg", "titan_clip_357_000204_movie_t-1.jpg", "titan_clip_357_000204_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with narrow carriageway and no marked centerline unfolds ahead as the ego car proceeds along the left side on patchy paver-and-asphalt pavement; traffic is light. A small dark car ahead in the same direction moves steadily away and effectively sets the pace. On the right side, a cyclist with a backpack rides away along the curb because there is no bike lane and may edge toward the travel lane near storefronts. Pedestrians on the right sidewalk walk near the curb, with one approaching the edge by a shop entrance, so they could momentarily encroach on the roadway. A 30 speed-limit sign and a pedestrian crossing sign are prominently visible.", "hazard_reasoning": "There is a cyclist carrying a backpack and cycling on the right side of the road, away from the ego car, because there is no bike lane. The cyclist's presence on the roadway without a designated lane increases collision risk, so the driver should slow down to maintain a safe distance and react if the cyclist swerves."}
{"id": "train_07073", "split": "train", "clip_key": "titan_clip_135_000510_movie", "source": {"subset": "titan", "scenario": "clip_135", "frame": "000510"}, "frames": ["titan_clip_135_000510_movie_t-3.jpg", "titan_clip_135_000510_movie_t-2.jpg", "titan_clip_135_000510_movie_t-1.jpg", "titan_clip_135_000510_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban street between tall buildings has a single shared lane with no divider, paved with stone and in good condition; vehicle traffic is light. Two pedestrians in white T-shirts carrying handbags walk away from the ego vehicle along the left side, keeping left because a silver van is parked on the right and narrows the lane. Farther ahead, a pedestrian in the center walks toward the camera and may pass close to the ego path. Another person near the right storefront moves along the curb while staying out of the lane. The parked van occupies the near-right edge and restricts space.", "hazard_reasoning": "There are two pedestrians wearing white t-shirts, carrying handbags, walking on the left side of the road because of the parked vehicle, away from the ego car. They are walking on the road due to the parked van obstruction, so you should stop to avoid collision."}
{"id": "train_07074", "split": "train", "clip_key": "2020-0226-140503_015105_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "015105"}, "frames": ["2020-0226-140503_015105_movie_t-3.jpg", "2020-0226-140503_015105_movie_t-2.jpg", "2020-0226-140503_015105_movie_t-1.jpg", "2020-0226-140503_015105_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane in each direction stretches ahead, the pavement dry and smooth with a zebra crossing in the foreground and no physical median; traffic is light. The ego travels in the left lane. An oncoming white SUV with a roof beacon approaches in the opposite lane and passes near the center line while remaining in its lane, briefly reducing lateral space. Far ahead in the ego lane, a box truck moves steadily away and is the next same-direction vehicle. On the right sidewalk, a pedestrian with an umbrella walks along the curb and stays out of the roadway. A white van is parked at the left curb just beyond the crosswalk, narrowing the usable lane.", "hazard_reasoning": "No hazards detected. All lanes are clear and traffic is flowing normally, so no immediate driver action is required."}
{"id": "train_07075", "split": "train", "clip_key": "2020-0129-105040_001149_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "001149"}, "frames": ["2020-0129-105040_001149_movie_t-3.jpg", "2020-0129-105040_001149_movie_t-2.jpg", "2020-0129-105040_001149_movie_t-1.jpg", "2020-0129-105040_001149_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the merging vehicle", "environment_perception": "An urban multi-lane arterial with smooth pavement and slow, steady traffic runs past mid-rise buildings. A gray utility van ahead moves from the right side of the ego-vehicle and merges into the ego lane directly in front, reducing the gap. Another silver van continues in the adjacent right lane slightly ahead, proceeding straight. A white hatchback ahead-left in the neighboring lane rolls slowly, keeping pace with the queue.", "hazard_reasoning": "There is a gray van moving from the right side of the ego-car, into the lane in front of the ego-car. The van is cutting into your path and may reduce your safe following distance, so you should yield to allow safe merging."}
{"id": "train_07076", "split": "train", "clip_key": "2020-0205-152530_011560_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "011560"}, "frames": ["2020-0205-152530_011560_movie_t-3.jpg", "2020-0205-152530_011560_movie_t-2.jpg", "2020-0205-152530_011560_movie_t-1.jpg", "2020-0205-152530_011560_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs beside a fenced sidewalk; the asphalt is dry with strong sun glare, and traffic is heavy in queues toward an intersection. Directly ahead in the ego lane, a black hatchback is stopped for a red traffic light at the intersection, holding the ego vehicle in place. In the adjacent right same-direction lane, a white mini-van just ahead inches forward, passing the stopped queue and limiting any chance to merge. Farther right, a line of cars also traveling in the same direction crawls toward the junction, intermittently advancing as gaps open.", "hazard_reasoning": "There is a black hatchback stopped in the ego because of the red traffic light ahead at the intersection. The driver should stop to avoid rear-ending the stopped vehicle at the red light."}
{"id": "train_07077", "split": "train", "clip_key": "titan_clip_491_000096_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_491_000096_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_491_000096_movie_t-3_augB1.jpg", "titan_clip_491_000096_movie_t-2_augB1.jpg", "titan_clip_491_000096_movie_t-1_augB1.jpg", "titan_clip_491_000096_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with one lane each way, a solid center line, and smooth pavement carries light traffic as parked vehicles line both curbs. Ahead on the left, a pedestrian carrying a backpack walks along the roadway to get around a parked vehicle, moving in front of the ego car and potentially edging into the ego lane. On the right ahead, an oncoming white box truck is stopped at the curb with its nose slightly in the lane, narrowing the oncoming side but not impeding the ego path. Far ahead in the same direction, a car proceeds straight and keeps a steady pace. A round speed-limit sign is posted on a pole along the street.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking on the left side of the road, in front of the ego-car, because of the parked vehicle. Because the pedestrian is diverted into the lane by the parked vehicle, the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_07078", "split": "train", "clip_key": "titan_clip_33_000450_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_33_000450_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_33_000450_movie_t-3_augB1.jpg", "titan_clip_33_000450_movie_t-2_augB1.jpg", "titan_clip_33_000450_movie_t-1_augB1.jpg", "titan_clip_33_000450_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street with brick paving runs between mid-rise buildings, with parked vans along the left and light vehicle flow but many pedestrians; the ego-car proceeds in a single left-side lane with no median toward a small cross-street ahead. A female pedestrian in a black shirt and blue jeans walks ahead of and away from the ego vehicle in the lane as she maneuvers around the parked white van on the left, briefly occupying the ego path. On the right, two pedestrians move along the curb by storefronts, staying near the edge of the roadway. Farther ahead, several pedestrians cross the street at the upcoming junction, keeping the pace slow. A red truck and the white van remain stopped on the left, narrowing the roadway.", "hazard_reasoning": "There is a female pedestrian wearing a black shirt and a pair of blue jeans, walking in front of and away from the ego-car, because she is maneuvering around a parked vehicle. The driver should manoeuvre carefully around the pedestrian to maintain safe distance and avoid a collision as she may step into the driving lane."}
{"id": "train_07079", "split": "train", "clip_key": "2020-0131-135401_074308_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "074308"}, "frames": ["2020-0131-135401_074308_movie_t-3.jpg", "2020-0131-135401_074308_movie_t-2.jpg", "2020-0131-135401_074308_movie_t-1.jpg", "2020-0131-135401_074308_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban multi-lane road with smooth pavement carries heavy same-direction traffic with no divider apparent, and movement is mostly stopped. An overhead lane-use sign shows straight-ahead lanes with a right-turn option. Directly ahead in the ego lane, a black hatchback is stopped because congestion blocks the way, holding the ego vehicle. In the lane to the left, a large box truck ahead is also stationary, reducing visibility and limiting lateral space. On the right, a silver van alongside creeps in the adjacent lane as the queue inches forward.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. You should stop to avoid colliding with the stationary vehicle."}
{"id": "train_07080", "split": "train", "clip_key": "2020-0131-135401_030304_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030304"}, "frames": ["2020-0131-135401_030304_movie_t-3.jpg", "2020-0131-135401_030304_movie_t-2.jpg", "2020-0131-135401_030304_movie_t-1.jpg", "2020-0131-135401_030304_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the black sedan approaching on your right", "environment_perception": "An urban two-way street with one lane each direction and no median leads to a signalized intersection; the pavement looks smooth and traffic is moderate. A white box truck ahead in the ego lane proceeds toward the green light, setting the pace. A black sedan on the right side approaches in the opposing lane, driving toward the ego vehicle as it comes through the intersection. A white car follows behind it in the same opposing stream. The traffic signals ahead show green for the ego direction. A large flatbed truck stands at the right curb near the camera, and several pedestrians are visible on the sidewalks.", "hazard_reasoning": "There is a black sedan driving toward the ego car, on the right side of the road. The black sedan could merge into the ego-vehicle's lane, so you should yield to avoid a potential collision."}
{"id": "train_07081", "split": "train", "clip_key": "titan_clip_1015_000198_movie", "source": {"subset": "titan", "scenario": "clip_1015", "frame": "000198"}, "frames": ["titan_clip_1015_000198_movie_t-3.jpg", "titan_clip_1015_000198_movie_t-2.jpg", "titan_clip_1015_000198_movie_t-1.jpg", "titan_clip_1015_000198_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around pedestrian", "environment_perception": "A dense urban shopping street with a single undivided narrow lane runs between storefronts and bollards on smooth pavement. Vehicle traffic is minimal while pedestrian activity is heavy and spills into the roadway. Ahead near the right edge, a pedestrian wearing a blue T-shirt and carrying a backpack crosses midblock from right to left through the ego lane. Several pedestrians farther ahead occupy the center of the lane and walk away from the camera, constraining forward movement. Others at the left curb cluster by the bollards and step to the edge of the roadway close to the path.", "hazard_reasoning": "There is a pedestrian carrying a backpack and wearing a blue t-shirt, crossing the street in the middle of the road, from the right side to the left side. The driver should manoeuvre around the pedestrian carefully to avoid a collision."}
{"id": "train_07082", "split": "train", "clip_key": "2020-0225-145150_013644_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "013644"}, "frames": ["2020-0225-145150_013644_movie_t-3.jpg", "2020-0225-145150_013644_movie_t-2.jpg", "2020-0225-145150_013644_movie_t-1.jpg", "2020-0225-145150_013644_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial approaches a signalized intersection with painted lane markings and smooth pavement, and traffic is heavy and queued. A gray van stops directly ahead in the ego lane because the overhead signal is red, holding the ego vehicle at the line. To the right, a white van in the adjacent same-direction lane waits slightly ahead, preventing an easy lane change. Farther forward in that right lane, a dark car also waits in the queue, reinforcing the stoppage at the intersection. The traffic light facing the ego direction shows red, and a side street opens on the left with no movement seen.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid rear-ending the stationary vehicle and comply with the red light."}
{"id": "train_07083", "split": "train", "clip_key": "titan_clip_761_000168_movie", "source": {"subset": "titan", "scenario": "clip_761", "frame": "000168"}, "frames": ["titan_clip_761_000168_movie_t-3.jpg", "titan_clip_761_000168_movie_t-2.jpg", "titan_clip_761_000168_movie_t-1.jpg", "titan_clip_761_000168_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane each direction, no median, smooth pavement, and slow mixed traffic. A large box truck stands along the left curb partly blocking the ego lane, while a green truck and a white car are parked on the right, narrowing the way. A pedestrian in black pants and a white shirt walks away from the ego vehicle in the middle of the road to get around the parked truck, occupying the ego lane. Ahead, a scooter proceeds straight in the same direction at low speed as it filters past the truck, pacing the ego vehicle. Farther ahead near the right curb, another pedestrian crosses the ego lane with shopping bags and a small dog.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, walking in the middle of the road, away from the ego car, because he is walking around the parked truck. The pedestrian's path is unpredictable and obscured by the truck, requiring the driver to slow down to maintain a safe stopping distance."}
{"id": "train_07084", "split": "train", "clip_key": "2020-0213-143552_003758_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "003758"}, "frames": ["2020-0213-143552_003758_movie_t-3.jpg", "2020-0213-143552_003758_movie_t-2.jpg", "2020-0213-143552_003758_movie_t-1.jpg", "2020-0213-143552_003758_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the truck", "environment_perception": "An urban four-lane two-way road with no physical median and a narrow curbside cycle lane appears dry but slightly worn, and traffic moves at a moderate pace in both directions. Ahead in the left curb lane, a brown truck is parked in the ego lane with its rear open for unloading, blocking the path. To the right, a white car in the adjacent same-direction lane proceeds straight past the obstruction, occupying the lane the ego may need to merge into. On the far right, several oncoming vans and cars approach in their lanes, moving steadily.", "hazard_reasoning": "There is a brown truck parked on the left side of the road, in the ego lane, because it is being unloaded. This parked truck blocks the traffic lane, requiring the driver to adjust course to avoid a collision by manoeuvring around it."}
{"id": "train_07085", "split": "train", "clip_key": "2020-0204-150838_081966_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "081966"}, "frames": ["2020-0204-150838_081966_movie_t-3.jpg", "2020-0204-150838_081966_movie_t-2.jpg", "2020-0204-150838_081966_movie_t-1.jpg", "2020-0204-150838_081966_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road carries same-direction traffic beside apartment buildings on the left and a sound barrier with guardrail on the right; the pavement looks dry and smooth and traffic is light with wide gaps. A black van ahead in the ego lane drives away from the camera at a steady pace, remaining in the path. A small light truck travels in the right lane slightly ahead, maintaining course without affecting the ego vehicle. A black minicar is parked in a driveway along the left sidewalk. An overhead blue directional sign is visible ahead.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car. The vehicle ahead may brake unexpectedly, so you should follow it at a safe distance to avoid collision."}
{"id": "train_07086", "split": "train", "clip_key": "titan_clip_833_000174_movie", "source": {"subset": "titan", "scenario": "clip_833", "frame": "000174"}, "frames": ["titan_clip_833_000174_movie_t-3.jpg", "titan_clip_833_000174_movie_t-2.jpg", "titan_clip_833_000174_movie_t-1.jpg", "titan_clip_833_000174_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shopping street with a single narrow lane paved in blocks has no divider, and the right side is coned off for roadside work; vehicular flow is light and slow amid dense pedestrian activity. At the right edge near the cones, a pedestrian in black pants and a white shirt carrying an orange baton stands facing the road and watches the lane near the ego vehicle's path. Ahead in the lane, several pedestrians walk away and some cross midblock, collectively constraining the vehicle's pace. A large construction truck is parked along the right work zone, narrowing the passage, and bicycles are parked by the left storefronts with a few protruding toward the lane.", "hazard_reasoning": "There is a pedestrian wearing black pants, a white shirt, and carrying an orange baton, standing at the right side of the road. The pedestrian may enter the roadway unexpectedly due to limited visibility from the parked truck and cones, so the driver should carefully manoeuvre around them."}
{"id": "train_07087", "split": "train", "clip_key": "titan_clip_1171_000348_movie", "source": {"subset": "titan", "scenario": "clip_1171", "frame": "000348"}, "frames": ["titan_clip_1171_000348_movie_t-3.jpg", "titan_clip_1171_000348_movie_t-2.jpg", "titan_clip_1171_000348_movie_t-1.jpg", "titan_clip_1171_000348_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban commercial street with a single lane and no median runs between buildings; the pavement looks smooth and overall traffic is light. There is a gray truck parked on the left side of the road ahead, stationary and protruding slightly into the lane, reducing clearance for the ego vehicle. Two pedestrians are ahead near the center-right of the roadway, walking away along the lane and potentially moving into the ego path as they pass the parked truck. Another pedestrian stands at the curb by the shopfronts on the right, close to the lane and likely to influence the ego vehicle's speed.", "hazard_reasoning": "There is a gray truck parked on the left side of the road. The parked vehicle narrows the lane and requires the driver to carefully manoeuvre around it to avoid a collision."}
{"id": "train_07088", "split": "train", "clip_key": "2020-0213-143552_051938_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "051938"}, "frames": ["2020-0213-143552_051938_movie_t-3.jpg", "2020-0213-143552_051938_movie_t-2.jpg", "2020-0213-143552_051938_movie_t-1.jpg", "2020-0213-143552_051938_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked truck", "environment_perception": "An urban two-way arterial with multiple lanes shows dry, worn asphalt and moderate, steady traffic; same-direction lanes run on the left side while oncoming flows to the right. A large white box truck ahead in the ego lane moves slowly and limits the vehicle's pace. A silver minivan slightly ahead to the right continues straight in the adjacent lane at a similar speed. A gray truck is parked along the left curb, narrowing the margin on that side.", "hazard_reasoning": "There is a gray truck parked at the left side of the road, because it is being unloaded. You should be aware of this parked truck as it slightly obstructs the left side and could limit your visibility."}
{"id": "train_07089", "split": "train", "clip_key": "titan_clip_921_000432_movie", "source": {"subset": "titan", "scenario": "clip_921", "frame": "000432"}, "frames": ["titan_clip_921_000432_movie_t-3.jpg", "titan_clip_921_000432_movie_t-2.jpg", "titan_clip_921_000432_movie_t-1.jpg", "titan_clip_921_000432_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban back street with a narrow two-way carriageway lacks a centerline, bordered by buildings, with smooth but tight pavement and light traffic. Parked vehicles line both sides, creating a single usable lane and occasional pinch points. A pedestrian wearing a white dress walks away from the ego vehicle along the left edge ahead, moving in the same direction and remaining in the potential path. A white van stands close on the right foreground, partly jutting into the lane and limiting clearance. Farther ahead on the right, a silver car and another van are stationary at the curb, further narrowing sightlines. No signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a white dress, walking away from the ego car, in front of the ego car. Driver should slow down to allow time to react if the pedestrian changes direction or steps into the roadway, especially given limited visibility due to parked cars."}
{"id": "train_07090", "split": "train", "clip_key": "2020-0204-150838_030074_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "030074"}, "frames": ["2020-0204-150838_030074_movie_t-3.jpg", "2020-0204-150838_030074_movie_t-2.jpg", "2020-0204-150838_030074_movie_t-1.jpg", "2020-0204-150838_030074_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial through a dense downtown, without a visible median, approaches a crosswalk-marked intersection; the pavement is smooth and traffic is heavy, with queues stopped. A white van directly ahead in the ego lane is stopped due to congestion and holds the ego vehicle at a standstill. To the left, a black van in the adjacent lane is also stopped in the queue, pacing the ego car and preventing an easy lane change. On the right, a green canvas-covered truck waits slightly ahead in its lane, narrowing the space for movement. Other vehicles ahead in multiple lanes remain stationary.", "hazard_reasoning": "There's a white van that has stopped in front of the ego-car in the ego lane, because of traffic congestion ahead. The van's sudden stop increases the risk of a rear-end collision, so the driver should stop promptly."}
{"id": "train_07091", "split": "train", "clip_key": "titan_clip_61_000018_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_61_000018_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_61_000018_movie_t-3_augB1.jpg", "titan_clip_61_000018_movie_t-2_augB1.jpg", "titan_clip_61_000018_movie_t-1_augB1.jpg", "titan_clip_61_000018_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian crossing ahead", "environment_perception": "An urban two-way street with no median runs between low-rise buildings; the pavement looks smooth and traffic is light. A pedestrian wearing a white shirt and black pants crosses in front of the ego vehicle from right to left, stepping out from the right sidewalk and moving through the ego lane. A white van stands just ahead along the left curb, its position partly intruding into the lane and narrowing the path. On the right edge, a worker pushes a small delivery cart near the curb, moving slowly parallel to the lane and close to the roadway. A roadside sign on the left shows a 30 speed limit.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, crossing the street in front of the ego car, from the right side to the left side. The driver should yield because the pedestrian is entering the vehicle's path and has the right of way at the crosswalk, requiring a reduction in speed and caution."}
{"id": "train_07092", "split": "train", "clip_key": "2020-0203-114632_022214_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "022214"}, "frames": ["2020-0203-114632_022214_movie_t-3.jpg", "2020-0203-114632_022214_movie_t-2.jpg", "2020-0203-114632_022214_movie_t-1.jpg", "2020-0203-114632_022214_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings, separated from oncoming lanes by a metal barrier; the asphalt is dry and smooth and traffic is moderate and flowing. A white box truck ahead in the ego lane drives away at a steady speed, directly setting the ego vehicle's pace. Farther ahead, a line of same-direction cars travels slowly in the distance. In the opposite carriageway to the right, oncoming cars move steadily without encroaching. Overhead blue direction signs span the road.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The driver should be aware of the truck to anticipate any sudden braking or speed changes that could require prompt reaction."}
{"id": "train_07093", "split": "train", "clip_key": "2020-0220-102630_113544_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "113544"}, "frames": ["2020-0220-102630_113544_movie_t-3.jpg", "2020-0220-102630_113544_movie_t-2.jpg", "2020-0220-102630_113544_movie_t-1.jpg", "2020-0220-102630_113544_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane per direction runs between mid-rise buildings; the pavement is smooth and traffic in the ego direction is slow with brief stops. A red scooter is stopped directly ahead near the left curb, halted by congestion in front and occupying the ego lane. Just beyond it, a black hatchback in the same lane slows to a stop, constraining the ego vehicle's pace. A yellow construction warning sign stands on the left sidewalk. Several utility trucks are parked along the right curb on the oncoming side.", "hazard_reasoning": "There is a red scooter stopped in front of the ego car, because of traffic congestion ahead. Since the scooter is stationary due to the congestion, the driver must stop to avoid colliding with the halted vehicle."}
{"id": "train_07094", "split": "train", "clip_key": "2020-0203-154554_041896_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "041896"}, "frames": ["2020-0203-154554_041896_movie_t-3.jpg", "2020-0203-154554_041896_movie_t-2.jpg", "2020-0203-154554_041896_movie_t-1.jpg", "2020-0203-154554_041896_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway ramp runs under elevated structures with a single left-hand lane bounded by a concrete wall on the left and a guardrail on the right; the pavement looks smooth and traffic is light as the road curves gently right. A white truck ahead in the ego lane travels steadily away, modestly setting the ego vehicle's pace. A car on a parallel roadway beyond the right guardrail moves in the same direction but stays separated and noninterfering. No salient signals or signs appear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07095", "split": "train", "clip_key": "2020-0205-103411_094696_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "094696"}, "frames": ["2020-0205-103411_094696_movie_t-3.jpg", "2020-0205-103411_094696_movie_t-2.jpg", "2020-0205-103411_094696_movie_t-1.jpg", "2020-0205-103411_094696_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be cautious of traffic cone", "environment_perception": "An urban multi-lane arterial carries moderate, steady traffic on smooth pavement, with a concrete barrier along the far left. The ego vehicle proceeds in the middle lane. A small flatbed truck is directly ahead in the same lane at a steady pace, constraining speed. A white sedan in the lane to the left moves slightly faster alongside, limiting a leftward lane change. In the right adjacent lane, a white car advances near a taper where an orange traffic cone stands on the right side of the ego lane, reducing lateral clearance and signaling the merge. Other vehicles farther ahead continue straight without abrupt maneuvers.", "hazard_reasoning": "There is an orange traffic cone on the right side of the lane. Drivers should be cautious because the cone may indicate upcoming construction or lane restrictions ahead."}
{"id": "train_07096", "split": "train", "clip_key": "titan_clip_357_000156_movie", "source": {"subset": "titan", "scenario": "clip_357", "frame": "000156"}, "frames": ["titan_clip_357_000156_movie_t-3.jpg", "titan_clip_357_000156_movie_t-2.jpg", "titan_clip_357_000156_movie_t-1.jpg", "titan_clip_357_000156_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with a single narrow carriageway and no centerline curves gently left, the ego-vehicle proceeding along the left side over worn block-pattern pavement; traffic is light. A blue car ahead in the same direction moves slowly up the street, setting the pace as it continues through the bend. On the right sidewalk by a convenience store entrance, a pedestrian stands and walks near the curb at the marked zebra crossing, potentially stepping toward the roadway. Another pedestrian on the left sidewalk walks away from the camera along the curb, remaining off the road. A round 30 speed-limit sign and a pedestrian crossing sign are posted on a pole, and several scooters and delivery items are parked on the sidewalks.", "hazard_reasoning": "The road is clear with no immediate hazards, so the driver can continue driving at a safe speed."}
{"id": "train_07097", "split": "train", "clip_key": "titan_clip_912_000204_movie", "source": {"subset": "titan", "scenario": "clip_912", "frame": "000204"}, "frames": ["titan_clip_912_000204_movie_t-3.jpg", "titan_clip_912_000204_movie_t-2.jpg", "titan_clip_912_000204_movie_t-1.jpg", "titan_clip_912_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street lined with shops has no centerline or median, the pavement looks smooth, and there are no vehicles ahead, so overall traffic is light. Ahead in the lane, a small group of pedestrians walks toward the camera in the middle of the roadway, constraining the path. On the right side of the road, a pedestrian wearing a black coat walks toward the ego car and approaches the travel lane. Near the right curb outside a convenience store, a woman with a stroller waits beside a line of red cones close to the lane and could step into it. The cones along the right curb further narrow the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a black coat, walking on the right side of the road, towards the ego car. The pedestrian may step into the lane unexpectedly, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_07098", "split": "train", "clip_key": "2020-0218-103119_005963_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "005963"}, "frames": ["2020-0218-103119_005963_movie_t-3.jpg", "2020-0218-103119_005963_movie_t-2.jpg", "2020-0218-103119_005963_movie_t-1.jpg", "2020-0218-103119_005963_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow two-way urban residential street runs straight between buildings, with smooth pavement, green edge lanes, and no centerline; traffic is very light with no oncoming or same-direction vehicles visible. On the left side of the road, a pedestrian wearing a brown coat and black pants walks toward the ego vehicle along the edge, potentially approaching the travel lane. A convex safety mirror is mounted on the left at a side street, and no traffic signals are in view. Parked cars in recessed bays on the right and parked bicycles on the left line the roadside but do not obstruct the lane.", "hazard_reasoning": "There is a pedestrian wearing a brown coat and black pants and walking on the left side of the road, toward the ego car. The pedestrian is approaching the vehicle's path, so the driver should manoeuvre carefully around the pedestrian to avoid a collision."}
{"id": "train_07099", "split": "train", "clip_key": "2020-0205-152530_059940_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "059940"}, "frames": ["2020-0205-152530_059940_movie_t-3.jpg", "2020-0205-152530_059940_movie_t-2.jpg", "2020-0205-152530_059940_movie_t-1.jpg", "2020-0205-152530_059940_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban interchange under an elevated expressway comes into view, where a multi-lane road splits into ramps separated by concrete barriers; the pavement is smooth and traffic is light. Just ahead to the left, a flatbed truck turns left into the side slip road, moving away from the ego vehicle and momentarily occupying the near-left area before clearing the path. No other nearby vehicles interact with the ego; distant cars remain on the separated ramps. An overhead traffic signal and sign gantry mark the junction, with guardrails lining the curbs.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07100", "split": "train", "clip_key": "2020-0213-143552_027397_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "027397"}, "frames": ["2020-0213-143552_027397_movie_t-3.jpg", "2020-0213-143552_027397_movie_t-2.jpg", "2020-0213-143552_027397_movie_t-1.jpg", "2020-0213-143552_027397_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road without a median feeds into a large signalized intersection, the asphalt slightly worn and traffic moderate. The ego vehicle approaches in the left lane as a scooter in the right foreground turns left across the junction, crossing ahead of the vehicle. A black hatchback enters from the left and drives straight across toward the right side of the intersection, occupying space in front of the ego lane. Slightly right of center, a small group of cyclists waits at the corner beside the crosswalk and may enter the ego lane after the light changes. Oncoming traffic includes a white van approaching the middle of the intersection without encroaching into the ego path. Overhead traffic lights and broad zebra crossings are prominent, and pedestrians gather on the sidewalks at all corners.", "hazard_reasoning": "There is no caption. There are no immediate hazards detected, so the driver can proceed normally."}
{"id": "train_07101", "split": "train", "clip_key": "titan_clip_147_000168_movie", "source": {"subset": "titan", "scenario": "clip_147", "frame": "000168"}, "frames": ["titan_clip_147_000168_movie_t-3.jpg", "titan_clip_147_000168_movie_t-2.jpg", "titan_clip_147_000168_movie_t-1.jpg", "titan_clip_147_000168_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban single-lane one-way street runs between midrise buildings; pavement is good and traffic is light but slows at a zebra crossing, with cones and a parked flatbed along the left curb. On the left of the ego car, a female pedestrian with black hair wearing a flowered skirt and a black shirt walks in the middle of the road because the truck occupies the curbside, and she may drift into the ego lane. Ahead, a white box truck in the same lane is stopped or crawling at the crosswalk, constraining the ego vehicle and blocking sightlines. Slightly ahead to the right, a red delivery scooter moves forward and turns right across the zebra crossing, briefly crossing the ego path. Blue roadside signs indicate straight-ahead travel and a pedestrian zone.", "hazard_reasoning": "There is a female pedestrian, with black hair, wearing a flowered skirt and black shirt, walking down the middle of the road, on the left side of the ego-car, because of a parked truck on the left hand side of the road. Manoeuvre carefully around the pedestrian to avoid collision due to her unexpected position in the lane."}
{"id": "train_07102", "split": "train", "clip_key": "2020-0205-103411_087307_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "087307"}, "frames": ["2020-0205-103411_087307_movie_t-3.jpg", "2020-0205-103411_087307_movie_t-2.jpg", "2020-0205-103411_087307_movie_t-1.jpg", "2020-0205-103411_087307_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-end collision", "environment_perception": "An urban multi-lane arterial with painted median and smooth pavement carries heavy traffic queuing at an intersection. A white hatchback is stopped directly ahead in the ego lane for the red light, holding the ego vehicle. Cars in the adjacent same-direction lane to the left are also halted in a queue alongside, preventing an easy merge. On the far right near the intersection, two cyclists ride across in front of the oncoming lanes without affecting the ego path. The traffic signal ahead shows red.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because the traffic light is red. The driver should stop to avoid a rear-end collision with the stopped vehicle ahead at the red light."}
{"id": "train_07103", "split": "train", "clip_key": "titan_clip_24_000204_movie", "source": {"subset": "titan", "scenario": "clip_24", "frame": "000204"}, "frames": ["titan_clip_24_000204_movie_t-3.jpg", "titan_clip_24_000204_movie_t-2.jpg", "titan_clip_24_000204_movie_t-1.jpg", "titan_clip_24_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with brick paving and a narrow single-lane roadway runs between tall buildings, with no median; traffic is light and slow. Ahead in the ego lane, a small box truck stands near midblock, effectively blocking the lane and setting the pace. On the right side near the storefronts, a pedestrian carrying a handbag in a white shirt, looking at a phone, walks toward the ego vehicle along the edge and may enter the lane. Farther ahead around the truck, several pedestrians walk and cross in the roadway, further constraining space. Traffic cones and stacked materials beside the truck narrow the passage, and no oncoming vehicles are visible.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing a white shirt and looking into the phone, walking on the right side of the road, towards the ego car. The driver should carefully manoeuvre because the distracted pedestrian may step into the path unexpectedly."}
{"id": "train_07104", "split": "train", "clip_key": "titan_clip_1165_000138_movie", "source": {"subset": "titan", "scenario": "clip_1165", "frame": "000138"}, "frames": ["titan_clip_1165_000138_movie_t-3.jpg", "titan_clip_1165_000138_movie_t-2.jpg", "titan_clip_1165_000138_movie_t-1.jpg", "titan_clip_1165_000138_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "A dense urban commercial street with tall buildings and trees appears smooth and narrow, offering a single central travel lane between curbside parking, and overall traffic is light. Ahead in the middle of the road, a pedestrian wearing a gray shirt and black pants, carrying handbags, crosses from left to right and may enter the ego vehicle's path. Parked white and silver vans line both curbs, including a large van close on the left and another just ahead on the right, which narrows the passage and reduces lateral clearance. Orange cones stand along the right sidewalk, and no prominent signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and black pants, carrying handbags, and crossing the street from left to right, in the middle of the road. The pedestrian is entering your path and you should yield to avoid a collision."}
{"id": "train_07105", "split": "train", "clip_key": "titan_clip_84_000366_movie", "source": {"subset": "titan", "scenario": "clip_84", "frame": "000366"}, "frames": ["titan_clip_84_000366_movie_t-3.jpg", "titan_clip_84_000366_movie_t-2.jpg", "titan_clip_84_000366_movie_t-1.jpg", "titan_clip_84_000366_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "An urban commercial street with a single narrow one-way lane and curbside parking on both sides has smooth pavement and slow-moving traffic. Near the ego vehicle on the left, a black van is parked in the ego lane for unloading, narrowing the usable lane. Farther ahead, a queue of same-direction cars crawls along the center, setting the pace for the ego vehicle. On the right ahead, a gray car stands at the curb protruding slightly into the lane, and a pair of orange cones lines the curbside.", "hazard_reasoning": "There is a black van parked on the left side of the road in the ego-lane, because it is being unloaded. The driver should carefully manoeuvre around the van to avoid a collision and maintain safe passage."}
{"id": "train_07106", "split": "train", "clip_key": "titan_clip_1190_000498_movie", "source": {"subset": "titan", "scenario": "clip_1190", "frame": "000498"}, "frames": ["titan_clip_1190_000498_movie_t-3.jpg", "titan_clip_1190_000498_movie_t-2.jpg", "titan_clip_1190_000498_movie_t-1.jpg", "titan_clip_1190_000498_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban commercial alley with a very narrow, lane-less shared roadway is paved with interlocking bricks and flanked by storefronts; there is no divider, and vehicle traffic is absent, so flow is very light. Ahead on the left, a pedestrian wearing black pants and carrying a handbag walks away from the ego car along the left edge, staying in the travel space and likely to constrain speed. Farther ahead on the right, another person stands by a shop entrance near a menu board, close to the roadway and may step out. Freestanding restaurant signboards protrude into the lane on both sides, creating pinch points that narrow the path.", "hazard_reasoning": "There is a pedestrian wearing black pants, carrying a handbag, walking on the left side of the road, away from the ego car. You should manoeuvre around the pedestrian to avoid a potential collision."}
{"id": "train_07107", "split": "train", "clip_key": "2020-0207-151349_037416_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "037416"}, "frames": ["2020-0207-151349_037416_movie_t-3.jpg", "2020-0207-151349_037416_movie_t-2.jpg", "2020-0207-151349_037416_movie_t-1.jpg", "2020-0207-151349_037416_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road runs under an elevated structure, with shrubs and a curb to the left and a guardrail to the right; the pavement is dry and traffic is heavy and mostly stopped. A white sedan directly ahead in the ego lane is stopped due to congestion and blocks the path. In the adjacent right lane slightly ahead, a large box truck is also halted, forming a parallel queue that constrains the ego vehicle's pace. Farther ahead, lines of vehicles in both lanes remain stationary. A bus stands on the right behind the guardrail in a bay and does not move.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_07108", "split": "train", "clip_key": "2020-0205-152530_060424_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "060424"}, "frames": ["2020-0205-152530_060424_movie_t-3.jpg", "2020-0205-152530_060424_movie_t-2.jpg", "2020-0205-152530_060424_movie_t-1.jpg", "2020-0205-152530_060424_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to the merging van", "environment_perception": "An urban multilane road runs under an elevated structure as the ego-vehicle follows a single-lane ramp, separated from the right lanes by a striped buffer with flexible posts; the pavement is smooth and traffic flows at a moderate, steady pace. A dark truck continues ahead in the ego lane at a constant speed, effectively setting the pace as the lanes converge. To the right, a white van slightly ahead moves left toward the ego lane to change lanes where the separation becomes broken lines, so it may enter in front of the ego car. A cyclist rides along the left sidewalk behind a guardrail, traveling parallel to traffic with no interaction. Blue directional signs are visible ahead.", "hazard_reasoning": "There's a white van changing lanes from the right lane to the ego-car lane, because dotted lines on the road allow for lane change. The driver should yield to the merging van to avoid a potential collision."}
{"id": "train_07109", "split": "train", "clip_key": "2020-0217-110854_020869_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "020869"}, "frames": ["2020-0217-110854_020869_movie_t-3.jpg", "2020-0217-110854_020869_movie_t-2.jpg", "2020-0217-110854_020869_movie_t-1.jpg", "2020-0217-110854_020869_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a fenced median and good pavement runs straight toward a signalized intersection. Traffic in the ego's direction is moderate to heavy and slowing into a queue. A motorcycle rider in a black suit and helmet travels directly ahead in the ego lane, slowing because of congestion and effectively setting the ego car's pace. A white van farther ahead in the same lane decelerates near the stop line, contributing to the queue. In the adjacent left lane, a black wagon moves ahead at similar speed without changing lanes. Across the median on the right, several oncoming cars proceed through the junction and pass by. Overhead traffic signals and gantry signs span the roadway at the intersection.", "hazard_reasoning": "There is a motorcycle cyclist wearing a black riding suit and a helmet, cycling in the ego lane, slowing down because there is traffic congestion, in front of the ego car. The driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_07110", "split": "train", "clip_key": "2020-0204-150838_016794_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "016794"}, "frames": ["2020-0204-150838_016794_movie_t-3.jpg", "2020-0204-150838_016794_movie_t-2.jpg", "2020-0204-150838_016794_movie_t-1.jpg", "2020-0204-150838_016794_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement passes office buildings and a hedge-lined curb on the left, and traffic is heavy and queued at a signalized intersection. A white van directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. In the adjacent right lane, a white station wagon stops alongside and waits to go straight. In the left lane, a black minivan is also stopped slightly ahead, remaining in lane. Overhead blue guide signs show straight and left-turn arrows toward Nihonbashi, Hibiya, and other destinations.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid a collision with the halted van at the red light."}
{"id": "train_07111", "split": "train", "clip_key": "titan_clip_174_000108_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_174_000108_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_174_000108_movie_t-3_augB1.jpg", "titan_clip_174_000108_movie_t-2_augB1.jpg", "titan_clip_174_000108_movie_t-1_augB1.jpg", "titan_clip_174_000108_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the cyclist.", "environment_perception": "An urban neighborhood street with a very narrow two-way road and no median runs straight between closely spaced buildings; the pavement is smooth and traffic is light. The ego vehicle proceeds along the left side with no oncoming vehicles currently visible. Ahead in the center of the lane, a cyclist wearing a white shirt rides away from the camera at a steady pace, occupying the middle of the road and effectively setting the ego vehicle's speed. No salient traffic signals or speed signs are visible, and the curbs are clear of parked vehicles or obstacles.", "hazard_reasoning": "There is a cyclist wearing a white shirt, cycling in the middle of the road, away from the ego car. The cyclist occupies the vehicle's path and requires careful manoeuvring to avoid a collision."}
{"id": "train_07112", "split": "train", "clip_key": "titan_clip_677_000288_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_677_000288_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_677_000288_movie_t-3_augB1.jpg", "titan_clip_677_000288_movie_t-2_augB1.jpg", "titan_clip_677_000288_movie_t-1_augB1.jpg", "titan_clip_677_000288_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban commercial street with tall buildings appears narrow and effectively single lane with no median, the pavement is smooth, and vehicular traffic is light throughout. Ahead in the center of the lane, a group of six pedestrians walks away from the ego vehicle, five wearing backpacks, occupying the road and limiting the vehicle's pace. On the right edge near the curb, a man and a child walk beside the group and stay near a parked silver van without entering the lane. A silver van is stopped at the curb on the right, slightly narrowing the available roadway.", "hazard_reasoning": "There are six male pedestrians walking together in a group, five of whom are wearing backpacks, walking in the middle of the road, away from the ego-car. The driver should carefully manoeuvre around them to avoid a collision, as they occupy the roadway and may not anticipate oncoming traffic."}
{"id": "train_07113", "split": "train", "clip_key": "titan_clip_333_000822_movie", "source": {"subset": "titan", "scenario": "clip_333", "frame": "000822"}, "frames": ["titan_clip_333_000822_movie_t-3.jpg", "titan_clip_333_000822_movie_t-2.jpg", "titan_clip_333_000822_movie_t-1.jpg", "titan_clip_333_000822_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban commercial street with a single narrow lane and no center divider runs ahead; the mixed cobblestone and asphalt surface appears even, and traffic is light with no vehicles immediately in front. Ahead at the zebra crossing, a pedestrian with a handbag looks at a phone while crossing from the left to the right across the ego vehicle's path, occupying the lane and constraining its pace. On the right sidewalk, several pedestrians walk along the curb and pass a recessed building entrance but remain off the roadway. At the left edge of the crosswalk, another person stands near the curb. A pedestrian crossing sign is visible on the left, and no traffic signal is seen.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and a handbag, looking into a phone, crossing the street in the crosswalk, from the left side to the right. The pedestrian may step into the vehicle's path unexpectedly due to distraction, so the driver must yield to allow safe passage."}
{"id": "train_07114", "split": "train", "clip_key": "2020-0227-104226_052506_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "052506"}, "frames": ["2020-0227-104226_052506_movie_t-3.jpg", "2020-0227-104226_052506_movie_t-2.jpg", "2020-0227-104226_052506_movie_t-1.jpg", "2020-0227-104226_052506_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction and a painted yellow centerline stretches ahead, the pavement smooth and dry, with light traffic. The ego vehicle proceeds in the left lane with no median. A gray sedan ahead in the ego lane slows slightly as a vehicle merges ahead, thus constraining the ego vehicle's pace. An oncoming car travels steadily in the opposing right-hand lane and does not affect the ego path. No salient signals or hazards are visible.", "hazard_reasoning": "There is a gray sedan slowing down in the ego lane because of another vehicle merging onto the road. The merging vehicle ahead forces the sedan to reduce speed, so you should slow down to maintain a safe following distance and avoid a potential collision."}
{"id": "train_07115", "split": "train", "clip_key": "2020-0226-140503_010306_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "010306"}, "frames": ["2020-0226-140503_010306_movie_t-3.jpg", "2020-0226-140503_010306_movie_t-2.jpg", "2020-0226-140503_010306_movie_t-1.jpg", "2020-0226-140503_010306_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped truck ahead.", "environment_perception": "An urban arterial with three lanes in the ego direction runs past mid-rise buildings, divided from oncoming traffic by a low hedge median; the asphalt is dry and traffic is light. A small silver van ahead in the center lane continues straight at a steady pace, setting the ego vehicle's speed. There is a white truck stopped on the left side of the road near the curb, partly occupying the left lane and narrowing that side. On the far right, oncoming cars travel uphill beyond the hedge without interacting with the ego. Overhead traffic signals span the intersection ahead.", "hazard_reasoning": "There is a white truck stopped on the left side of the road. The stopped truck could obstruct the lane and may require the driver to adjust speed or positioning, so caution is needed."}
{"id": "train_07116", "split": "train", "clip_key": "2020-0226-101332_069268_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "069268"}, "frames": ["2020-0226-101332_069268_movie_t-3.jpg", "2020-0226-101332_069268_movie_t-2.jpg", "2020-0226-101332_069268_movie_t-1.jpg", "2020-0226-101332_069268_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes passes between tall buildings; the dry pavement looks smooth and traffic is moderate, moving steadily without a median in view. A gray van ahead in the ego lane accelerates away because the signal ahead is green, increasing the gap in front of the ego car. A white minivan slightly ahead in the right lane continues straight at a similar pace, remaining in its lane and not affecting the ego path. On the left, a small hatchback and several trucks advance more slowly in their lane, forming a queue that constrains left-lane flow but stays clear of the ego lane. The forward traffic light shows green.", "hazard_reasoning": "There is a gray van in the ego lane, accelerating away from the ego car, because of a green traffic light. The driver should start moving promptly to follow the green signal and maintain safe traffic flow through the intersection."}
{"id": "train_07117", "split": "train", "clip_key": "titan_clip_20_000528_movie", "source": {"subset": "titan", "scenario": "clip_20", "frame": "000528"}, "frames": ["titan_clip_20_000528_movie_t-3.jpg", "titan_clip_20_000528_movie_t-2.jpg", "titan_clip_20_000528_movie_t-1.jpg", "titan_clip_20_000528_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with no median and smooth pavement appears, with light traffic and the oncoming lane on the right mostly clear. A white van is stopped ahead in the ego lane in front of the car, creating a blockage. A black taxi in the same lane slows and queues just before the van, constraining the ego vehicle's pace. At the right-side crosswalk of a side street, a cyclist rides out toward the main road and approaches the ego lane near the obstruction.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car. The white van ahead is blocking your lane, so stop to avoid collision."}
{"id": "train_07118", "split": "train", "clip_key": "titan_clip_358_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_358_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_358_000204_movie_t-3_augB1.jpg", "titan_clip_358_000204_movie_t-2_augB1.jpg", "titan_clip_358_000204_movie_t-1_augB1.jpg", "titan_clip_358_000204_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with stone paving approaches a small Y-junction, with no median and minimal lane markings, and traffic is light. A cyclist wearing a white shirt is in the middle of the road ahead, riding from left to right across the lane toward the far curb, occupying the ego path. A pedestrian farther ahead in the center walks diagonally rightward, also crossing in front of the vehicle. Several pedestrians stand along the right-side storefront near the curb at the junction. A white van is stopped at the right curb by the corner, slightly narrowing the approach. A traffic signal visible farther down the continuation street shows red at the next intersection.", "hazard_reasoning": "A cyclist wearing a white shirt is in the middle of the road, crossing to the right side. The cyclist's unexpected crossing requires the driver to reduce speed to maintain safety and avoid a potential collision."}
{"id": "train_07119", "split": "train", "clip_key": "titan_clip_721_000336_movie", "source": {"subset": "titan", "scenario": "clip_721", "frame": "000336"}, "frames": ["titan_clip_721_000336_movie_t-3.jpg", "titan_clip_721_000336_movie_t-2.jpg", "titan_clip_721_000336_movie_t-1.jpg", "titan_clip_721_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban intersection on a single-lane two-way road has smooth pavement and no median, with light traffic and no moving vehicles nearby. Ahead, a pedestrian wearing a white shirt and black pants and carrying a handbag crosses the ego lane from left to right on the zebra crossing, directly in front of the vehicle. On the far right, two pedestrians proceed away along the perpendicular crosswalk toward the sidewalk and do not enter the ego path. The pedestrian signal above the crossing shows green, and a 30 km/h speed-limit sign is visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a handbag, crossing the street at the pedestrian crosswalk, from the left side to the right side of the street. The driver should yield to the pedestrian here to avoid a potential collision and respect their right of way."}
{"id": "train_07120", "split": "train", "clip_key": "2020-0217-144444_007666_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "007666"}, "frames": ["2020-0217-144444_007666_movie_t-3.jpg", "2020-0217-144444_007666_movie_t-2.jpg", "2020-0217-144444_007666_movie_t-1.jpg", "2020-0217-144444_007666_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-lane road approaches a signalized intersection with no median and smooth pavement; traffic is light to moderate and currently halted at the stop line. The ego vehicle occupies the left lane on this two-way street. A blue hatchback directly ahead in the ego lane is stopped for a red light, holding the ego car's pace. A dark sedan in the adjacent right lane is also stationary at the signal alongside the ego vehicle. Pedestrians walk along the left sidewalk and some cross the far side of the intersection on the marked crosswalk. A small white van travels across the junction on the cross street from right to left. The traffic signal ahead shows red, and a blue sign with a left-turn arrow indicates the ego lane is for left turns.", "hazard_reasoning": "There is a blue hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to avoid colliding with the stationary hatchback at the red signal."}
{"id": "train_07121", "split": "train", "clip_key": "2020-0221-115122_024814_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "024814"}, "frames": ["2020-0221-115122_024814_movie_t-3.jpg", "2020-0221-115122_024814_movie_t-2.jpg", "2020-0221-115122_024814_movie_t-1.jpg", "2020-0221-115122_024814_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial under an elevated roadway has three same-direction lanes with smooth asphalt and no visible median, and traffic is heavy and mostly stop-and-go. A white hatchback directly ahead in the ego lane is stopped because congestion blocks the lanes, and it sets the ego vehicle's pace. To the right, a long queue of vans and cars is also stopped or inching forward, forming a continuous line that narrows space beside the ego lane. In the left lane slightly ahead, a small box truck moves slowly past the queue, staying ahead of the hatchback and offering little opening into that lane. No traffic signals or speed signs are clearly visible, and no pedestrians or obstacles enter the roadway.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver needs to stop to avoid colliding with the stationary vehicle caused by the slowdown ahead."}
{"id": "train_07122", "split": "train", "clip_key": "2020-0210-101957_030890_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "030890"}, "frames": ["2020-0210-101957_030890_movie_t-3.jpg", "2020-0210-101957_030890_movie_t-2.jpg", "2020-0210-101957_030890_movie_t-1.jpg", "2020-0210-101957_030890_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multilane arterial runs beneath an elevated structure, the asphalt smooth, with moderate to heavy traffic queued at an intersection. A black van directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the left lane, two small trucks slightly ahead are also stopped or crawling with the queue, limiting room to merge. In the adjacent right lane in the same direction, a silver van and several cars inch forward alongside. The overhead traffic signal facing this approach shows red as vehicles wait near the junction.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of a red traffic light. Stop to avoid collision with the vehicle ahead."}
{"id": "train_07123", "split": "train", "clip_key": "titan_clip_835_000480_movie", "source": {"subset": "titan", "scenario": "clip_835", "frame": "000480"}, "frames": ["titan_clip_835_000480_movie_t-3.jpg", "titan_clip_835_000480_movie_t-2.jpg", "titan_clip_835_000480_movie_t-1.jpg", "titan_clip_835_000480_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrians ahead", "environment_perception": "An urban shopping street features a single narrow shared lane with no divider, paved with interlocking bricks in good condition. Traffic is light, with storefronts tight to the roadway and pedestrians using the lane. Far ahead in the same lane, a small white van travels away along the center and is the only visible vehicle ahead. On the right mid-distance, two pedestrians carrying a backpack and a handbag walk away from the ego vehicle along the edge of the lane and may move into its line. At the right foreground, two other pedestrians approach toward the ego path from the curb area, narrowing the available space.", "hazard_reasoning": "There are two pedestrians carrying a backpack and a handbag, and walking away from the ego car, on the right side of the road. They are walking close to the travel lane and could change direction unexpectedly, so the driver should be cautious."}
{"id": "train_07124", "split": "train", "clip_key": "2020-0213-143552_043226_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_043226_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_043226_movie_t-3_augB1.jpg", "2020-0213-143552_043226_movie_t-2_augB1.jpg", "2020-0213-143552_043226_movie_t-1_augB1.jpg", "2020-0213-143552_043226_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial runs beneath elevated expressways, with smooth pavement and yellow solid lines separating lanes; traffic is moderate to heavy and slows near a junction. A white box truck ahead in the ego lane slows and constrains the ego car's pace. A black van immediately to the right creeps forward alongside the truck's rear and may edge into the ego lane. A white minivan ahead to the left proceeds steadily in the adjacent lane, offering a nearby parallel flow. Overhead blue direction signs span the roadway, indicating an upcoming split.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The driver should prepare to adjust speed and maintain a safe following distance to avoid a rear-end collision under these conditions."}
{"id": "train_07125", "split": "train", "clip_key": "2020-0203-154554_048860_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "048860"}, "frames": ["2020-0203-154554_048860_movie_t-3.jpg", "2020-0203-154554_048860_movie_t-2.jpg", "2020-0203-154554_048860_movie_t-1.jpg", "2020-0203-154554_048860_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, the pavement smooth and bordered by metal guardrails on the left, and traffic is queued at a signal. A gray sedan directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the adjacent right lane, a black van edges forward alongside the queue and may pass the stopped cars. Farther ahead in that right lane, a small white work truck slows and comes to a stop near the intersection. Overhead signals facing the ego direction show solid red.", "hazard_reasoning": "There is a gray sedan stopped in the ego lane, because of the red traffic light. The driver must stop to avoid rear-ending the halted vehicle and comply with the traffic signal."}
{"id": "train_07126", "split": "train", "clip_key": "titan_clip_6_000558_movie", "source": {"subset": "titan", "scenario": "clip_6", "frame": "000558"}, "frames": ["titan_clip_6_000558_movie_t-3.jpg", "titan_clip_6_000558_movie_t-2.jpg", "titan_clip_6_000558_movie_t-1.jpg", "titan_clip_6_000558_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "In a dense urban center, the ego vehicle waits at the end of a narrow one-lane side street that meets a multi-lane arterial; the pavement is clean and the cross street shows moderate to heavy two-way flow with no visible median. Ahead at the zebra crossing, a lady wearing a white T-shirt and brown skirt with a backpack crosses from right to left across the ego lane, taking priority and delaying departure. A small white van ahead turns left from the arterial into the side street, rolling slowly over the crosswalk in front of the ego vehicle and constraining space at the junction. Other pedestrians on the right also proceed onto the crosswalk. Construction hoarding and cones line the right edge, slightly narrowing the approach.", "hazard_reasoning": "There is a lady, wearing a white t-shirt and brown skirt, carrying a backpack, crossing the street, at a pedestrian crossing, from the right side to the left side. You should yield because the pedestrian is crossing ahead at the designated crosswalk and may enter the vehicle's path."}
{"id": "train_07127", "split": "train", "clip_key": "titan_clip_161_000288_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_161_000288_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_161_000288_movie_t-3_augB1.jpg", "titan_clip_161_000288_movie_t-2_augB1.jpg", "titan_clip_161_000288_movie_t-1_augB1.jpg", "titan_clip_161_000288_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian carefully", "environment_perception": "An urban two-way street with one narrow lane in each direction and no median extends ahead, the pavement smooth and traffic light but slowed by curbside stops in left-hand traffic. Parked vans line both sides, narrowing the usable lane. A pedestrian in a white shirt is ahead near the middle of the road, walking away from the ego vehicle to pass a parked van and briefly occupying the ego lane. A white box truck further ahead in the same direction slows near the curb, setting the pace for the ego car. On the right, a small van stands at the curb with cones by a storefront, adding to the constriction.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking in the middle of the road, away from the ego-car, because of the parked vehicle. The pedestrian is crossing the roadway due to the parked trucks creating blind spots, so the driver should manoeuvre carefully around them."}
{"id": "train_07128", "split": "train", "clip_key": "titan_clip_179_000102_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_179_000102_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_179_000102_movie_t-3_augB1.jpg", "titan_clip_179_000102_movie_t-2_augB1.jpg", "titan_clip_179_000102_movie_t-1_augB1.jpg", "titan_clip_179_000102_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be cautious of pedestrian ahead", "environment_perception": "A narrow urban street with a single marked lane runs between tall buildings, the pavement is smooth, and there is no median; traffic is light with no moving vehicles nearby. Ahead, a pedestrian in a black-and-white shirt stands in the middle of the lane, largely stationary and directly in the ego path, constraining the pace. Farther ahead on the right, another person walks along the sidewalk near building entrances, remaining outside the lane. Parked cars line bays on both sides, narrowing the corridor but not intruding into the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black-and-white shirt and standing in the middle of the road. The driver should be cautious because the pedestrian in the road could step into the vehicle's path."}
{"id": "train_07129", "split": "train", "clip_key": "titan_clip_698_000306_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_698_000306_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_698_000306_movie_t-3_augB1.jpg", "titan_clip_698_000306_movie_t-2_augB1.jpg", "titan_clip_698_000306_movie_t-1_augB1.jpg", "titan_clip_698_000306_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban narrow two-way street with no marked centerline runs between storefronts; the smooth asphalt lacks a divider and traffic is light. The ego vehicle proceeds along the left side. Straight ahead in the center of the road, two pedestrians push a stroller toward the ego vehicle, walking in the middle where there is no crosswalk, and they block the ego path. Farther ahead at the left edge, a lone pedestrian walks away along the curb close to the travel lane. On the right side ahead, a small blue car stands parked at the curb, reducing available width.", "hazard_reasoning": "There are two pedestrians, pushing a stroller, walking in the middle of the road, towards the ego car, because there is no crosswalk. The driver should stop to avoid colliding with pedestrians crossing at an unmarked location."}
{"id": "train_07130", "split": "train", "clip_key": "titan_clip_104_000144_movie", "source": {"subset": "titan", "scenario": "clip_104", "frame": "000144"}, "frames": ["titan_clip_104_000144_movie_t-3.jpg", "titan_clip_104_000144_movie_t-2.jpg", "titan_clip_104_000144_movie_t-1.jpg", "titan_clip_104_000144_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the minivan", "environment_perception": "An urban street with a single same-direction lane runs between tall buildings; the pavement is good and the lane is narrowed by construction cones and fencing on the left, with light traffic. A small white truck ahead in the ego lane proceeds slowly near the center, constraining the ego vehicle's pace through the narrowed section. A pedestrian on the left by the taped-off work zone stands and then walks along the edge, close to the roadway but outside the lane. Another person farther ahead on the right sidewalk lingers near shopfronts and remains clear of traffic. No traffic signal is visible, and bollards plus stacked blue bins on the right sit just off the lane as minor obstacles.", "hazard_reasoning": "There is a white minivan parked on the right side of the road, in the ego lane, because of an emergency. The parked minivan blocks the driving lane and forces the driver to manoeuvre carefully to avoid collision."}
{"id": "train_07131", "split": "train", "clip_key": "2020-0131-103016_048737_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "048737"}, "frames": ["2020-0131-103016_048737_movie_t-3.jpg", "2020-0131-103016_048737_movie_t-2.jpg", "2020-0131-103016_048737_movie_t-1.jpg", "2020-0131-103016_048737_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way arterial runs straight between mid-rise buildings, with painted lane lines and no physical median; the pavement is dry and traffic is moderate, queuing at an intersection. Directly ahead in the ego lane, a black van has stopped because the traffic signal is red, holding the ego car. In the adjacent left lane a white flatbed truck is alongside and stopped, limiting a lane change. Pedestrians wait on the corners by the crosswalks without entering the roadway. A traffic light above the junction shows red for the ego direction.", "hazard_reasoning": "There is a black van, that has stopped, in front of the ego car, in the ego lane, because of the red traffic light. The driver should stop to avoid a collision with the stopped van and to comply with the red light."}
{"id": "train_07132", "split": "train", "clip_key": "2020-0210-101957_080163_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "080163"}, "frames": ["2020-0210-101957_080163_movie_t-3.jpg", "2020-0210-101957_080163_movie_t-2.jpg", "2020-0210-101957_080163_movie_t-1.jpg", "2020-0210-101957_080163_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane in each direction and a solid yellow centerline runs between close-set buildings; the pavement is smooth and traffic appears light. A brown construction truck ahead in the ego lane continues forward at a steady pace because the road ahead is clear. An oncoming white minivan travels past in the opposite lane on the right side of the roadway and clears without affecting the ego path. Metal railings line the left sidewalk, and no signals or hazards stand out.", "hazard_reasoning": "There is a brown truck moving forward in front of the ego car, in the ego lane, because the road ahead is clear. The truck could slow or brake unexpectedly, obscuring the road ahead and increasing collision risk if the driver does not maintain a safe following distance."}
{"id": "train_07133", "split": "train", "clip_key": "2020-0131-103016_027323_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-103016_027323_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-103016_027323_movie_t-3_augB1.jpg", "2020-0131-103016_027323_movie_t-2_augB1.jpg", "2020-0131-103016_027323_movie_t-1_augB1.jpg", "2020-0131-103016_027323_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "An urban multi-lane road with smooth asphalt and no visible central median runs past offices and trees, and traffic flows at a slow to moderate pace. A blue and white truck in the right lane ahead signals and moves left into the ego lane in front of the ego car, occupying the gap and becoming the immediate lead vehicle. A silver sedan already ahead in the ego lane proceeds straight at low speed and bunches up as the truck merges, limiting the ego vehicle's pace. On the left curb near the crosswalk, a small blue truck stands parked with two orange cones, slightly narrowing the left edge of the lane.", "hazard_reasoning": "There is a blue and white truck changing lanes from the right lane to the ego lane, in front of the ego car. The truck is merging into the ego lane ahead, so the driver should yield to allow safe lane integration."}
{"id": "train_07134", "split": "train", "clip_key": "2020-0127-132751_000202_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "000202"}, "frames": ["2020-0127-132751_000202_movie_t-3.jpg", "2020-0127-132751_000202_movie_t-2.jpg", "2020-0127-132751_000202_movie_t-1.jpg", "2020-0127-132751_000202_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A wide bidirectional urban street with no physical median comes into view, the pavement dry and smooth and overall traffic light. Ahead at the zebra crosswalk, several pedestrians traverse in front of the ego-car, including a pedestrian wearing a cap and a brown coat carrying a handbag, who crosses directly ahead because of the crosswalk and blocks the lane briefly. More walkers continue from the right side of the intersection, keeping the crossing occupied. A blue truck stands at the left curb by the corner near the crosswalk, slightly intruding toward the lane. Far ahead in the opposite lane, an oncoming car approaches the intersection but remains well separated.", "hazard_reasoning": "There's a pedestrian wearing a cap, a brown coat and carrying a handbag, crossing the street in front of the ego-car, because there's a crosswalk. The driver should stop to avoid colliding with the pedestrian entering the vehicle's path."}
{"id": "train_07135", "split": "train", "clip_key": "2020-0220-102630_113251_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "113251"}, "frames": ["2020-0220-102630_113251_movie_t-3.jpg", "2020-0220-102630_113251_movie_t-2.jpg", "2020-0220-102630_113251_movie_t-1.jpg", "2020-0220-102630_113251_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane per direction and no median runs through low-rise buildings; the pavement looks sound and overall traffic is light but slows ahead. A motorbike in the ego lane a short distance ahead comes to a stop because congestion forms further up, so the ego-car queues behind it. An oncoming silver sedan travels toward the camera in the opposite lane and passes without affecting the ego path. A white hatchback at a driveway on the left remains stationary near the curb and does not enter the roadway.", "hazard_reasoning": "There's a motorbike that has stopped in front of the ego-car in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision with the stationary motorbike."}
{"id": "train_07136", "split": "train", "clip_key": "2020-0205-103411_010627_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "010627"}, "frames": ["2020-0205-103411_010627_movie_t-3.jpg", "2020-0205-103411_010627_movie_t-2.jpg", "2020-0205-103411_010627_movie_t-1.jpg", "2020-0205-103411_010627_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing ahead", "environment_perception": "An urban scene shows a two-way road approaching a signalized intersection, with smooth pavement and light traffic. The ego vehicle travels in the left lane and there is no physical median. A pedestrian wearing a black shirt crosses mid-road ahead from left to right, moving into the ego lane and likely constraining the approach. A black van is ahead to the right at the curb just past the crosswalk area, appearing stopped and potentially merging later. Several oncoming cars in the opposing right-side lane proceed straight through the junction at a steady pace. Overhead traffic lights span the road, and storefronts line both sides with bicycles and scooters parked along the sidewalks.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, crossing the street in the middle of the road, from the left side to the right side. The pedestrian may enter the vehicle's path unexpectedly, so the driver should be aware to prevent a collision."}
{"id": "train_07137", "split": "train", "clip_key": "2020-0129-105040_019469_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "019469"}, "frames": ["2020-0129-105040_019469_movie_t-3.jpg", "2020-0129-105040_019469_movie_t-2.jpg", "2020-0129-105040_019469_movie_t-1.jpg", "2020-0129-105040_019469_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated arterial carries three lanes in the same direction, bordered by guardrails on both sides, with smooth pavement and heavy stop-and-go flow. Ahead in the ego lane, a white hatchback slows in queue because of congestion, dictating the ego vehicle's pace. In the right-adjacent lane, a large box truck travels slightly ahead and also slows, blocking some forward view and limiting any chance to move right. A motorcycle threads forward along the gap beside the truck toward the front of the queue near the hatchback's flank.", "hazard_reasoning": "There is a white hatchback slowing down in the ego lane, because of traffic congestion ahead. The white hatchback's reduced speed signals congestion; you should slow down to maintain a safe distance."}
{"id": "train_07138", "split": "train", "clip_key": "2020-0205-152530_003732_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "003732"}, "frames": ["2020-0205-152530_003732_movie_t-3.jpg", "2020-0205-152530_003732_movie_t-2.jpg", "2020-0205-152530_003732_movie_t-1.jpg", "2020-0205-152530_003732_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of the gray van merging", "environment_perception": "On a dense urban two-lane undivided street with a centerline, the pavement is dry and smooth and traffic appears light. Ahead, an oncoming gray van from the right-side lane steers across the centerline into the ego lane to drive around a parked vehicle in its lane, briefly encroaching on the ego path before straightening. The parked car sits near the curb on the oncoming side, narrowing that lane and prompting the van's maneuver. A pedestrian walks along the right sidewalk near storefronts, continuing parallel to traffic without approaching the roadway. No other vehicles noticeably affect the ego vehicle.", "hazard_reasoning": "There is a gray van in the right lane, driving toward the ego car, cutting into the ego lane, because they are driving around a parked vehicle in their lane. The driver should be aware of the gray van merging into the lane to anticipate its movement and prevent a collision."}
{"id": "train_07139", "split": "train", "clip_key": "2020-0210-155354_047790_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "047790"}, "frames": ["2020-0210-155354_047790_movie_t-3.jpg", "2020-0210-155354_047790_movie_t-2.jpg", "2020-0210-155354_047790_movie_t-1.jpg", "2020-0210-155354_047790_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes approaches an elevated roadway, the pavement looks smooth and traffic flows at a moderate, steady pace with no physical median visible. A silver van ahead in the ego lane drives away from the camera and continues straight, loosely setting the pace. To the right, a light-colored boxy car in the right-turn lane moves slowly alongside as it approaches the junction. In the center lane farther ahead, a small cluster of cars proceeds straight while maintaining separation from the ego lane. Overhead gantry signs indicate straight-only for the two left lanes and a right turn for the rightmost lane.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car. The van could slow or brake unexpectedly, so the driver should follow the vehicle ahead at a safe distance to avoid a collision under this situation."}
{"id": "train_07140", "split": "train", "clip_key": "2020-0204-150838_071955_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "071955"}, "frames": ["2020-0204-150838_071955_movie_t-3.jpg", "2020-0204-150838_071955_movie_t-2.jpg", "2020-0204-150838_071955_movie_t-1.jpg", "2020-0204-150838_071955_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban expressway with three same-direction lanes runs under an elevated viaduct, bounded by a concrete barrier on the right; the pavement is smooth and traffic is moderate. A red container truck ahead in the ego lane slows, constraining the ego car's pace amid denser vehicles farther ahead. A large dump truck in the lane to the left travels slightly behind and alongside, limiting an immediate leftward merge. Several passenger cars farther ahead in the middle and left lanes continue at a steady speed in the same direction. Blue overhead guide signs are visible, and viaduct columns along the right edge tighten the shoulder.", "hazard_reasoning": "There is a red truck slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead at the intersection. The truck's reduced speed indicates congestion, so the driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_07141", "split": "train", "clip_key": "2020-0213-143552_075365_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "075365"}, "frames": ["2020-0213-143552_075365_movie_t-3.jpg", "2020-0213-143552_075365_movie_t-2.jpg", "2020-0213-143552_075365_movie_t-1.jpg", "2020-0213-143552_075365_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with smooth pavement runs under clear skies, with a guardrail dividing directions and a curbside barrier on the right; traffic is moderate and easing near a junction. Ahead in the ego lane, a blue truck slows to turn right, matching the right-turn-only arrows and briefly constraining the ego car's pace. To its left, a white hatchback in the adjacent lane moves forward and passes, keeping to its lane and reducing options for the ego vehicle to merge left. On the far right, a large white semi-trailer is positioned along the curbside shoulder beside a striped gore, limiting space and sight toward the turn area. Directional arrows and channelization markings guide the approach to the right turn.", "hazard_reasoning": "There is a blue truck slowing in front of the ego car, in the ego lane, because it is turning right. The truck's sudden deceleration for the turn may force the driver to brake sharply, so you should slow down to maintain a safe distance."}
{"id": "train_07142", "split": "train", "clip_key": "titan_clip_152_000378_movie", "source": {"subset": "titan", "scenario": "clip_152", "frame": "000378"}, "frames": ["titan_clip_152_000378_movie_t-3.jpg", "titan_clip_152_000378_movie_t-2.jpg", "titan_clip_152_000378_movie_t-1.jpg", "titan_clip_152_000378_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with shops lines both sides as the ego car proceeds on a narrow single-lane roadway beside a small planted median; the pavement is smooth and traffic moves slowly. A black car ahead in the ego lane rolls forward cautiously in a short line, constraining the ego vehicle's pace. A large white delivery truck is along the left edge near the camera and remains mostly stationary, narrowing the usable lane. On the right side of the road, a pedestrian wearing a black T-shirt and black shorts pushes a cart toward the ego along the curb, walking in the roadway and potentially entering the lane.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, black shorts, and pushing a cart, walking on the right side of the road, toward the ego car. The driver should carefully manoeuvre to avoid a collision with the pedestrian pushing the cart as they approach the vehicle."}
{"id": "train_07143", "split": "train", "clip_key": "titan_clip_123_000570_movie", "source": {"subset": "titan", "scenario": "clip_123", "frame": "000570"}, "frames": ["titan_clip_123_000570_movie_t-3.jpg", "titan_clip_123_000570_movie_t-2.jpg", "titan_clip_123_000570_movie_t-1.jpg", "titan_clip_123_000570_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of parked vehicle", "environment_perception": "A dense urban street with mid-rise buildings features a narrow undivided roadway, smooth pavement, and light traffic. The vehicle continues straight with no median as parked cars line the left curb. A white box van travels ahead in the same lane at a steady pace, setting the ego vehicle's speed. A silver hatchback is parked along the left curb slightly ahead, narrowing the usable lane. On the right sidewalk, a man stands at the curb beside bicycles and planters, looking toward the roadway and waiting, so he may step into the lane.", "hazard_reasoning": "There is a silver hatchback parked on the left side of the road. This parked vehicle could obstruct the lane edge or re-enter traffic unexpectedly, so drivers should be cautious."}
{"id": "train_07144", "split": "train", "clip_key": "2020-0203-154554_040986_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "040986"}, "frames": ["2020-0203-154554_040986_movie_t-3.jpg", "2020-0203-154554_040986_movie_t-2.jpg", "2020-0203-154554_040986_movie_t-1.jpg", "2020-0203-154554_040986_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway ramp with a single lane runs under an elevated structure, bounded by a concrete divider on the left and a guardrail with noise panels on the right; the dry pavement curves gently and traffic is slow with congestion visible ahead and on the parallel carriageway. A white box truck ahead in the ego lane slows because of traffic congestion ahead on the road, setting the pace for the ego vehicle. On the parallel lanes to the left beyond the divider, several cars creep forward in the same direction in a long queue. A small motorcycle farther ahead near the right-side merge area moves slowly along the edge and may enter the ego lane.", "hazard_reasoning": "There is a white truck slowing in the ego lane because of traffic congestion ahead on the road. The truck's reduced speed indicates congestion, so the driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_07145", "split": "train", "clip_key": "2020-0218-103119_052617_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "052617"}, "frames": ["2020-0218-103119_052617_movie_t-3.jpg", "2020-0218-103119_052617_movie_t-2.jpg", "2020-0218-103119_052617_movie_t-1.jpg", "2020-0218-103119_052617_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs between tall buildings and beneath an elevated expressway, with dry pavement and a guardrail along the right where the ego lane is marked to merge right; overall traffic is moderate to heavy with slow queues ahead. A white box truck directly ahead in the ego lane slows before the merge, constraining the ego vehicle's pace. To the left, a red SUV travels alongside in the adjacent lane at a similar speed and continues straight without affecting the ego's path. On the other side of the guardrail to the right, a line of vans and cars creeps forward toward the same downstream area, reducing available gaps for merging.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The truck's reduced speed can require the driver to brake suddenly to maintain a safe following distance, so the driver should adjust speed accordingly."}
{"id": "train_07146", "split": "train", "clip_key": "2020-0204-150838_053390_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "053390"}, "frames": ["2020-0204-150838_053390_movie_t-3.jpg", "2020-0204-150838_053390_movie_t-2.jpg", "2020-0204-150838_053390_movie_t-1.jpg", "2020-0204-150838_053390_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the merging vehicle", "environment_perception": "An urban three-lane arterial runs beneath elevated expressway structures, the pavement dry and smooth, with light to moderate, steady traffic. A blue hatchback just ahead in the ego lane drifts left and changes into the adjacent lane. To the right, a white box truck slightly ahead continues straight in the outer lane at a steady pace, traveling parallel to the ego vehicle as the hatchback merges. Farther ahead, a smaller truck proceeds in the leftmost lane without interacting with the ego vehicle.", "hazard_reasoning": "There is a blue hatchback lane changing to the left lane from the ego lane. The hatchback's merging maneuver may bring it into the ego-vehicle's path unexpectedly, so the driver should be cautious to avoid a collision."}
{"id": "train_07147", "split": "train", "clip_key": "2020-0227-153144_031969_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "031969"}, "frames": ["2020-0227-153144_031969_movie_t-3.jpg", "2020-0227-153144_031969_movie_t-2.jpg", "2020-0227-153144_031969_movie_t-1.jpg", "2020-0227-153144_031969_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with dry pavement carries heavy, stop-and-go traffic throughout. A white minivan directly ahead in the ego lane slows and creeps forward in the queue, constraining the ego car's pace because of traffic congestion. A small tarp-covered light truck is alongside in the right adjacent lane, moving slowly in parallel and remaining close to the ego vehicle. Farther ahead in the right lane, another white van inches forward with the queue and limits the view down the road. Pedestrians walk along the left sidewalk and remain off the roadway.", "hazard_reasoning": "There is a white minivan slowing down in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to match the reduced speed ahead and maintain a safe following distance."}
{"id": "train_07148", "split": "train", "clip_key": "titan_clip_1108_000402_movie", "source": {"subset": "titan", "scenario": "clip_1108", "frame": "000402"}, "frames": ["titan_clip_1108_000402_movie_t-3.jpg", "titan_clip_1108_000402_movie_t-2.jpg", "titan_clip_1108_000402_movie_t-1.jpg", "titan_clip_1108_000402_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban backstreet with no centerline, bordered by buildings and a brick viaduct, has smooth pavement and light traffic as the ego vehicle proceeds on the left. A small cargo scooter travels ahead in the ego lane at low speed, setting the pace. From the left curb in the near foreground, a bicycle begins to turn right into the street and may enter the ego lane. On the right side of the road, a pedestrian talking on the phone walks toward the ego car along the edge, potentially approaching its path. A convex roadside mirror and parking entrance signs are visible on the right, and several cones line the left shoulder.", "hazard_reasoning": "A pedestrian talking on the phone is walking on the right side of the road, toward the ego car. The pedestrian may step into the vehicle's path unexpectedly due to distraction, so the driver should remain alert."}
{"id": "train_07149", "split": "train", "clip_key": "titan_clip_1117_000258_movie", "source": {"subset": "titan", "scenario": "clip_1117", "frame": "000258"}, "frames": ["titan_clip_1117_000258_movie_t-3.jpg", "titan_clip_1117_000258_movie_t-2.jpg", "titan_clip_1117_000258_movie_t-1.jpg", "titan_clip_1117_000258_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The ego-vehicle travels on a narrow urban commercial street with a single undivided lane and smooth asphalt; traffic is light. Ahead, a white delivery truck is parked along the left curb and protrudes into the lane, constraining the ego's path. In front of it, a man wearing a cap unloads boxes onto a handcart and stands at the lane edge on the left in front of the ego-car because of the parked truck. Several pedestrians walk along the right sidewalk near restaurants while keeping clear of the lane. Crates and a dolly sit on the roadway beside the truck, further narrowing the passage, and short bollards line the right side.", "hazard_reasoning": "There is a man wearing a cap, unloading a handcart, and standing on the left side of the road, in front of the ego-car, because of the parked truck. The worker may step into traffic unexpectedly due to limited sidewalk space, so the driver should slow down."}
{"id": "train_07150", "split": "train", "clip_key": "2020-0212-102546_083817_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "083817"}, "frames": ["2020-0212-102546_083817_movie_t-3.jpg", "2020-0212-102546_083817_movie_t-2.jpg", "2020-0212-102546_083817_movie_t-1.jpg", "2020-0212-102546_083817_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban expressway segment runs in a single lane between high sound walls and concrete barrier blocks, the pavement smooth and dry, with very light same-direction traffic. A white van directly ahead in the ego lane slows and stops, blocking the lane and constraining the ego car's pace. No oncoming traffic or merge points are visible, and an overpass appears ahead within the walled section, with narrow shoulders hemmed by barriers.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car. The vehicle ahead is stationary in your lane, so you need to stop immediately to prevent a collision."}
{"id": "train_07151", "split": "train", "clip_key": "2020-0214-102601_083205_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "083205"}, "frames": ["2020-0214-102601_083205_movie_t-3.jpg", "2020-0214-102601_083205_movie_t-2.jpg", "2020-0214-102601_083205_movie_t-1.jpg", "2020-0214-102601_083205_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid a collision.", "environment_perception": "An urban two-lane road with a solid yellow centerline and smooth pavement is shown; traffic in the ego's direction is queued and momentarily stopped while the oncoming lane appears clear. In the left lane, a gray SUV is directly ahead of the ego car and stopped, holding the ego vehicle. Farther ahead in the same lane, a large box truck is also stationary near a junction, keeping the queue from moving. On the right, a bicyclist rides along the sidewalk toward the intersection and remains outside the travel lane. A circular speed-limit sign stands on the right, with curbs and utility poles lining the street.", "hazard_reasoning": "There is a gray SUV stopped in front of the ego car, in the ego lane. The driver should stop to maintain a safe distance and avoid colliding with the stationary vehicle ahead."}
{"id": "train_07152", "split": "train", "clip_key": "2020-0228-102841_070187_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "070187"}, "frames": ["2020-0228-102841_070187_movie_t-3.jpg", "2020-0228-102841_070187_movie_t-2.jpg", "2020-0228-102841_070187_movie_t-1.jpg", "2020-0228-102841_070187_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban side street with no center line runs straight between buildings and a fenced rail corridor; the pavement is dry and smooth, and traffic is light with no vehicles ahead or oncoming. Far ahead near the end of the street, two pedestrians move along the roadway, one near the left edge, and they may enter the ego vehicle's path as the corridor narrows. A zebra crossing spans the lane at a small side junction on the left, where a blue arrow sign points left. Hedges tight to the curb and rail structures overhead on the right leave little shoulder but no obstacles in the lane.", "hazard_reasoning": "No hazards such as stopped vehicles, pedestrians crossing, or obstacles are present, so the driver may proceed without adjustment."}
{"id": "train_07153", "split": "train", "clip_key": "titan_clip_665_000210_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_665_000210_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_665_000210_movie_t-3_augB1.jpg", "titan_clip_665_000210_movie_t-2_augB1.jpg", "titan_clip_665_000210_movie_t-1_augB1.jpg", "titan_clip_665_000210_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street with one lane each direction and no median runs between storefronts, the ego-vehicle traveling in the left lane on smooth pavement; traffic is light with no cars immediately ahead or oncoming. Ahead near the center of the roadway, a pedestrian wearing a white shirt and black skirt crosses in the middle of the road toward the left side, moving through the ego lane and briefly occupying its path. On the right edge, a person with a backpack walks along the curb toward the camera, close to the carriageway but keeping out of the lane. A-frame shop signs line the sidewalks.", "hazard_reasoning": "A pedestrian wearing a white shirt and black skirt is crossing in the middle of the road to the left side. The pedestrian's path intersects with the vehicle's lane and may be difficult to see until close, so you should slow down to avoid a collision."}
{"id": "train_07154", "split": "train", "clip_key": "titan_clip_1143_000372_movie", "source": {"subset": "titan", "scenario": "clip_1143", "frame": "000372"}, "frames": ["titan_clip_1143_000372_movie_t-3.jpg", "titan_clip_1143_000372_movie_t-2.jpg", "titan_clip_1143_000372_movie_t-1.jpg", "titan_clip_1143_000372_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban commercial street with a narrow single lane in the ego direction and a painted buffer on the right has dry pavement and light traffic. Immediately ahead on the left in the ego lane, a gray truck is parked because it is being unloaded, partly blocking the lane and creating a pinch point. Two pedestrians on the left sidewalk beside bicycles walk past the rear of the truck close to the curb, near the ego path. Farther ahead in the same direction, a small white van moves slowly beyond the obstruction, briefly governing the flow.", "hazard_reasoning": "There is a gray truck parked on the left side of the road, in the ego lane, because it is being unloaded. Driver should manoeuvre carefully around it because it partially obstructs the view ahead creating a blind spot."}
{"id": "train_07155", "split": "train", "clip_key": "titan_clip_700_000570_movie", "source": {"subset": "titan", "scenario": "clip_700", "frame": "000570"}, "frames": ["titan_clip_700_000570_movie_t-3.jpg", "titan_clip_700_000570_movie_t-2.jpg", "titan_clip_700_000570_movie_t-1.jpg", "titan_clip_700_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban commercial street with a single narrow undivided lane and smooth pavement shows light vehicle traffic; the corridor lacks a clear sidewalk, so pedestrians share the carriageway. Two pedestrians wearing white shirts approach on the left side within the lane because there is no sidewalk, and they may encroach on the ego vehicle's path. A pedestrian in a white T-shirt ahead near the lane center walks away in the same direction as the ego vehicle, directly constraining its speed. Another person by the left storefront moves along the edge close to the lane but keeps to the side. A parked scooter and several restaurant signboards line the right edge and protrude toward the roadway, further narrowing the usable lane.", "hazard_reasoning": "There are two pedestrians wearing white shirts, walking towards the ego car, on the left side of the road, because there is no sidewalk. The driver should stop to yield to them and prevent a potential collision."}
{"id": "train_07156", "split": "train", "clip_key": "2020-0220-102630_029967_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "029967"}, "frames": ["2020-0220-102630_029967_movie_t-3.jpg", "2020-0220-102630_029967_movie_t-2.jpg", "2020-0220-102630_029967_movie_t-1.jpg", "2020-0220-102630_029967_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road with same-direction traffic has smooth pavement and no median, and flow is heavy and slow due to a construction zone narrowing the left side with cones and work vehicles. A black motorcycle is stopped directly ahead in the ego lane, waiting because the congestion from the left-side works blocks the way and it holds the ego vehicle. A large white box truck farther ahead in the same lane inches forward beside the cones, creating the bottleneck and setting the pace. Vehicles in the right lane, including a white sedan and a dark minivan, crawl alongside the ego car and limit lateral space.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego car, in the ego lane, because of traffic congestion and construction on the left side of the road. The driver should stop to avoid colliding with the halted motorcycle and navigate the congested and construction area safely."}
{"id": "train_07157", "split": "train", "clip_key": "titan_clip_575_000408_movie", "source": {"subset": "titan", "scenario": "clip_575", "frame": "000408"}, "frames": ["titan_clip_575_000408_movie_t-3.jpg", "titan_clip_575_000408_movie_t-2.jpg", "titan_clip_575_000408_movie_t-1.jpg", "titan_clip_575_000408_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "An urban two-way street with no median and a zebra crossing comes into view; the pavement looks intact and traffic is light. A cyclist emerges from the right sidewalk across the crosswalk and rides toward the ego vehicle along the right side of the road, potentially entering the ego lane. Farther ahead, another cyclist approaches in the oncoming side near the center of the roadway and continues straight, narrowing space through the intersection. At the extreme right edge, a third bicycle moves across the crosswalk right to left near the curb and stays out of the lane. A posted 30 speed limit sign is visible on the right.", "hazard_reasoning": "The cyclist is cycling toward the ego car on the right side of the road. The cyclist's path brings them close to the vehicle's trajectory, so the driver should yield to allow the cyclist to pass safely under this situation."}
{"id": "train_07158", "split": "train", "clip_key": "titan_clip_614_000534_movie", "source": {"subset": "titan", "scenario": "clip_614", "frame": "000534"}, "frames": ["titan_clip_614_000534_movie_t-3.jpg", "titan_clip_614_000534_movie_t-2.jpg", "titan_clip_614_000534_movie_t-1.jpg", "titan_clip_614_000534_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "A narrow urban back street with a single shared lane and no centerline runs between tall buildings; the pavement looks intact and traffic is very light. Ahead on the left, a red delivery truck is stopped in the ego lane because it is being unloaded, narrowing the passage. A worker at the rear of the truck lifts and arranges boxes on the roadway and moves near the ego path. No other moving vehicles appear ahead or oncoming along the corridor. Several cartons and equipment sit on the asphalt beside the truck, creating small obstacles clustered at the left curb.", "hazard_reasoning": "There's a red truck, parked on the left side of the road, in the ego lane, because it is being unloaded. The obstructing truck forces the driver to deviate from the center of the lane, increasing the risk of collision if not negotiated carefully."}
{"id": "train_07159", "split": "train", "clip_key": "2020-0214-145407_013620_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "013620"}, "frames": ["2020-0214-145407_013620_movie_t-3.jpg", "2020-0214-145407_013620_movie_t-2.jpg", "2020-0214-145407_013620_movie_t-1.jpg", "2020-0214-145407_013620_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road with smooth pavement and no physical median runs past office buildings, and traffic is moderate with a slow queue in the rightmost lane. Ahead-right, a white van begins moving left from the ego lane into the adjacent left lane, briefly occupying the space ahead as it merges. Slightly farther ahead in the left lane, a dark minivan proceeds straight at a steady pace, now flowing ahead of the merging van and setting the immediate pace. Farther ahead to the right, a line of cars creeps forward toward the intersection, keeping overall speeds low. A wide zebra crossing spans the foreground at the junction.", "hazard_reasoning": "There is a white van lane changing from the ego lane to the left lane. The driver should slow down to anticipate the van's movement and maintain a safe distance under this situation."}
{"id": "train_07160", "split": "train", "clip_key": "2020-0203-154554_066566_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "066566"}, "frames": ["2020-0203-154554_066566_movie_t-3.jpg", "2020-0203-154554_066566_movie_t-2.jpg", "2020-0203-154554_066566_movie_t-1.jpg", "2020-0203-154554_066566_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial with two lanes in the ego direction has a hatched buffer to the right separating oncoming lanes, the pavement looks smooth, and traffic flows lightly at a steady pace. A black motorcycle directly ahead in the ego lane pulls away from the camera as vehicles ahead move. A small white van ahead near the left curb in the ego lane travels straight a short distance in front of the bike, keeping the stream moving. Farther ahead, a dark hatchback continues in the same lane and sets the pace for the group. A pedestrian overpass and an overhead gantry are visible ahead.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane, away from the ego car, because traffic ahead is moving. The driver should follow the vehicle ahead to maintain a safe distance and avoid collision if it slows unexpectedly."}
{"id": "train_07161", "split": "train", "clip_key": "titan_clip_622_000468_movie", "source": {"subset": "titan", "scenario": "clip_622", "frame": "000468"}, "frames": ["titan_clip_622_000468_movie_t-3.jpg", "titan_clip_622_000468_movie_t-2.jpg", "titan_clip_622_000468_movie_t-1.jpg", "titan_clip_622_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with a single narrow lane and no centerline runs between shops; the stone-paved surface is clean and traffic is light. Two pedestrians carrying handbags and wearing white pants walk away from the ego vehicle along the left edge, keeping to that side because of parked vehicles and occupying part of the lane. A dark SUV ahead near the center-left is stopped or moving slowly in the same direction, leaving a narrow gap for passage. Two people stand at a storefront on the far left, remaining off the roadway. Orange cones and a work area line the right curb beside the wooden building, slightly narrowing the usable width.", "hazard_reasoning": "There are two pedestrians carrying handbags and wearing white pants, walking away from the ego car along the left side of the road, because of the parked vehicles. These pedestrians may step into the driving lane to avoid the parked vehicle, so the driver should manoeuvre cautiously."}
{"id": "train_07162", "split": "train", "clip_key": "2020-0203-154554_066640_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_066640_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_066640_movie_t-3_augB1.jpg", "2020-0203-154554_066640_movie_t-2_augB1.jpg", "2020-0203-154554_066640_movie_t-1_augB1.jpg", "2020-0203-154554_066640_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with a painted hatched median runs straight under bare trees; pavement appears slightly worn and traffic is moderate, moving but bunched. A black motorcycle is directly ahead in the ego lane, slowing because of congestion ahead and setting the ego car's pace. A small white van just ahead on the left hugs the curb and creeps forward near the lane, possibly merging into the ego path and further compressing gaps. Farther ahead in the same direction, a darker minivan proceeds slowly with the queue. Oncoming cars travel to the right beyond the painted median and remain separate from the ego lane. A blue overhead direction sign and a pedestrian footbridge span the road, and pedestrians walk along both sidewalks behind guardrails.", "hazard_reasoning": "There is a black motorcycle slowing down in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance due to reduced speeds caused by the congestion."}
{"id": "train_07163", "split": "train", "clip_key": "titan_clip_1258_000108_movie", "source": {"subset": "titan", "scenario": "clip_1258", "frame": "000108"}, "frames": ["titan_clip_1258_000108_movie_t-3.jpg", "titan_clip_1258_000108_movie_t-2.jpg", "titan_clip_1258_000108_movie_t-1.jpg", "titan_clip_1258_000108_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential scene shows a very narrow two-way street with no centerline as the ego-vehicle proceeds in the left lane toward a small junction where a side street branches right; the pavement is smooth and traffic is light with no moving vehicles. A black van stands stationary in a recessed parking bay at the building on the right, aligned with the curb and not intruding into the lane. A person stands beside the van inside the carport area, remaining still near the roadway edge. Convex mirrors on a pole at the left corner highlight a blind right-hand corner, and no traffic signals or posted speed signs are visible.", "hazard_reasoning": "No immediate hazards are detected in the scene, so maintain speed and continue monitoring surroundings."}
{"id": "train_07164", "split": "train", "clip_key": "2020-0131-135401_042597_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "042597"}, "frames": ["2020-0131-135401_042597_movie_t-3.jpg", "2020-0131-135401_042597_movie_t-2.jpg", "2020-0131-135401_042597_movie_t-1.jpg", "2020-0131-135401_042597_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of turning van", "environment_perception": "An urban two-way street widens into three same-direction lanes at a signalized intersection, with no median, smooth pavement, and moderate traffic. Ahead-left, a red van on the left side of the lane is turning left at the intersection, slowing and momentarily constraining the ego lane. Directly ahead, a white car in the center lane continues straight through the crosswalk, setting the pace for the ego vehicle. Ahead-right, a silver minivan eases forward in its lane toward the junction, preparing to turn right without encroaching on the ego path. Several pedestrians stand on the right corner by the crosswalk near storefronts.", "hazard_reasoning": "A red van on the left side of the lane is turning left. You should be aware of this turning vehicle to anticipate its movement and avoid potential conflict."}
{"id": "train_07165", "split": "train", "clip_key": "2020-0204-150838_030087_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "030087"}, "frames": ["2020-0204-150838_030087_movie_t-3.jpg", "2020-0204-150838_030087_movie_t-2.jpg", "2020-0204-150838_030087_movie_t-1.jpg", "2020-0204-150838_030087_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "A dense urban arterial with multiple same-direction lanes and smooth pavement runs beneath an elevated roadway, and traffic is heavy and slow as vehicles queue toward a large intersection. Directly ahead in the ego lane, a white van slows and then creeps forward because of congestion, constraining the ego car's pace. In the lane to the left, a black van idles alongside in the queue, keeping close spacing that discourages lane changes. Ahead-right, a covered flatbed truck rolls slowly in the right lane parallel to the ego vehicle without encroaching. Large zebra crosswalk markings span the intersection area.", "hazard_reasoning": "There is a white van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. Therefore, the driver must stop to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_07166", "split": "train", "clip_key": "titan_clip_1290_000516_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1290_000516_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1290_000516_movie_t-3_augB1.jpg", "titan_clip_1290_000516_movie_t-2_augB1.jpg", "titan_clip_1290_000516_movie_t-1_augB1.jpg", "titan_clip_1290_000516_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian unloading truck", "environment_perception": "An urban multilane arterial with three same-direction lanes and a fenced median to the right is slightly wet, and traffic is moderate as the road approaches an overpass. On the far left, two box trucks are stopped with rear doors open, partly blocking the left lane. Next to the nearer truck, a pedestrian in black stands in the left lane beside the open cargo area as items are handled, and he may step into the ego lane. Ahead in the center lane, a white hatchback travels steadily away and sets the pace. Farther ahead, a small white van continues straight in the same direction. Oncoming vehicles move on the opposite carriageway beyond the fence.", "hazard_reasoning": "A pedestrian wearing all black is standing in the left lane, because he is unloading a truck. This pedestrian occupies a travel lane and may move into traffic unexpectedly, creating a collision risk for the driver."}
{"id": "train_07167", "split": "train", "clip_key": "2020-0204-103442_041064_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "041064"}, "frames": ["2020-0204-103442_041064_movie_t-3.jpg", "2020-0204-103442_041064_movie_t-2.jpg", "2020-0204-103442_041064_movie_t-1.jpg", "2020-0204-103442_041064_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs under an elevated structure with smooth asphalt and clear lane markings, and traffic is heavy and momentarily stopped. Directly ahead in the ego lane, a white highway bus is stationary because congestion ahead blocks progress, fully obstructing the ego vehicle's path. In the left adjacent lane, a box truck idles level with the ego car, preventing a left merge. In the right lane, a gray minivan slightly ahead also remains stopped, keeping position and closing the gap for a right merge. No traffic signals are visible, and there are no pedestrians or cyclists.", "hazard_reasoning": "There is a white bus stopped in front of the ego car, because of traffic congestion ahead. Driver should stop to avoid a rear-end collision with the stationary bus due to the congestion ahead."}
{"id": "train_07168", "split": "train", "clip_key": "2020-0213-143552_005095_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "005095"}, "frames": ["2020-0213-143552_005095_movie_t-3.jpg", "2020-0213-143552_005095_movie_t-2.jpg", "2020-0213-143552_005095_movie_t-1.jpg", "2020-0213-143552_005095_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "An urban bi-directional arterial in a dense city setting stretches ahead with smooth pavement, a painted centerline, and a green curbside bike lane; traffic remains light in the ego direction and steadier opposite. A white box truck is stopped ahead on the left shoulder with its rear open unloading, jutting slightly into the bike lane and forming a near-side obstruction the ego will pass. Across the centerline to the right, several cars and vans approach in the oncoming lanes at a steady pace, continuing straight without entering the ego path.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is unloading. The parked truck partially blocks the lane and requires the driver to manoeuvre safely around it to avoid collision."}
{"id": "train_07169", "split": "train", "clip_key": "2020-0226-140503_106106_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "106106"}, "frames": ["2020-0226-140503_106106_movie_t-3.jpg", "2020-0226-140503_106106_movie_t-2.jpg", "2020-0226-140503_106106_movie_t-1.jpg", "2020-0226-140503_106106_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "On a tree-lined urban street, the ego car proceeds in a single left-side lane with smooth pavement, divided from oncoming traffic by a raised planted median; traffic is light to moderate. A silver box truck directly ahead in the ego lane slows, constraining the ego vehicle's speed. To the right beyond the median, oncoming cars pass steadily with no interaction. Along the left curb, several vans and cars are parked in a pull-off bay, narrowing the margin but staying outside the lane. A cyclist moves along the sidewalk on the right behind a fence and remains off the roadway.", "hazard_reasoning": "There is a silver truck slowing in front of the ego car, in the ego lane. The truck's deceleration reduces the available stopping distance, so you should slow down to maintain a safe following distance."}
{"id": "train_07170", "split": "train", "clip_key": "2020-0214-145407_017663_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "017663"}, "frames": ["2020-0214-145407_017663_movie_t-3.jpg", "2020-0214-145407_017663_movie_t-2.jpg", "2020-0214-145407_017663_movie_t-1.jpg", "2020-0214-145407_017663_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene on a wide two-way arterial approaches a signalized intersection with multiple lanes; the pavement is smooth and dry and traffic is light to moderate. A white box truck ahead in the ego lane slows as it enters the junction, constraining the ego car's pace. A black sedan to the left in the adjacent lane creeps forward near the line, remaining parallel without drifting toward the ego lane. Farther ahead, a few vehicles travel straight in the oncoming lanes beyond the intersection with no conflict. The traffic signal facing the ego direction shows green.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's slowing requires the driver to reduce speed to maintain a safe following distance and avoid a collision."}
{"id": "train_07171", "split": "train", "clip_key": "2020-0131-103016_011998_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-103016_011998_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-103016_011998_movie_t-3_augB1.jpg", "2020-0131-103016_011998_movie_t-2_augB1.jpg", "2020-0131-103016_011998_movie_t-1_augB1.jpg", "2020-0131-103016_011998_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with no physical median and smooth pavement carries moderate traffic toward a signalized intersection; oncoming traffic flows on the right side of the roadway. A black van directly ahead in the ego lane slows as a white box truck ahead of it merges left from the adjacent right lane into the ego lane, constraining the ego car's pace. A motorcycle slightly ahead and a bit to the right rides between lanes toward the intersection, continuing straight and passing close to the van in our path. Additional vehicles proceed in adjacent same-direction lanes while steady oncoming streams pass on the far side.", "hazard_reasoning": "There is a black van slowing down in the ego lane, in front of the ego car, because of the truck ahead of it, merging into the ego lane. You should slow down to maintain a safe distance and avoid collision with the merging truck."}
{"id": "train_07172", "split": "train", "clip_key": "2020-0212-102546_094322_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "094322"}, "frames": ["2020-0212-102546_094322_movie_t-3.jpg", "2020-0212-102546_094322_movie_t-2.jpg", "2020-0212-102546_094322_movie_t-1.jpg", "2020-0212-102546_094322_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban expressway with two same-direction lanes runs between high sound barriers and an elevated structure; the pavement looks smooth and traffic is light and steady. A white van ahead slightly to the right moves left across the dashed line into the ego lane, becoming the immediate lead vehicle as it merges. A small flatbed truck proceeds farther ahead in the left lane at a steady pace, remaining in front of vehicles in that lane. Overhead blue guide signs display route directions and the distance \"止まれ\" 00m.", "hazard_reasoning": "There's a white van changing lanes from the right lane to the ego lane. It is merging into your lane and could cut you off, so you should slow down to avoid a collision."}
{"id": "train_07173", "split": "train", "clip_key": "2020-0228-102841_003738_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "003738"}, "frames": ["2020-0228-102841_003738_movie_t-3.jpg", "2020-0228-102841_003738_movie_t-2.jpg", "2020-0228-102841_003738_movie_t-1.jpg", "2020-0228-102841_003738_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "be aware of the barrier", "environment_perception": "An urban two-way street with a single narrow lane in each direction and no median runs alongside building facades; the asphalt is smooth and traffic is very light with no vehicles immediately ahead or oncoming. On the left sidewalk ahead, two pedestrians walk along the storefronts near the curb, moving parallel to the road and staying off the lane. On the right side near a utility pole, another pedestrian stands by the railing without stepping into traffic. A red traffic barrier sits on the right edge of the ego lane, slightly intruding toward the lane and acting as a roadside obstruction.", "hazard_reasoning": "There is a red traffic barrier on the right side of the ego lane. The driver should be aware of the barrier as it encroaches into the lane and could necessitate steering adjustments to avoid contact."}
{"id": "train_07174", "split": "train", "clip_key": "2020-0218-103119_050397_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "050397"}, "frames": ["2020-0218-103119_050397_movie_t-3.jpg", "2020-0218-103119_050397_movie_t-2.jpg", "2020-0218-103119_050397_movie_t-1.jpg", "2020-0218-103119_050397_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with stopped vehicle", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection with painted lane markings and dry, smooth pavement; traffic is stopped at a red light. A white box truck is directly ahead in the ego lane, stopped and holding the ego car at the line. To the left of the ego vehicle, a white van sits halted in the adjacent same-direction lane, limiting any immediate lateral movement. On the right, a gray sedan creeps forward in the right-turn lane and turns right through the intersection, remaining clear of the ego lane. Overhead traffic signals display red for the ego's direction.", "hazard_reasoning": "There is a white truck stopped in front of the ego car. The driver should stop immediately to avoid colliding with the stationary vehicle."}
{"id": "train_07175", "split": "train", "clip_key": "titan_clip_845_000522_movie", "source": {"subset": "titan", "scenario": "clip_845", "frame": "000522"}, "frames": ["titan_clip_845_000522_movie_t-3.jpg", "titan_clip_845_000522_movie_t-2.jpg", "titan_clip_845_000522_movie_t-1.jpg", "titan_clip_845_000522_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential street with a narrow two-way carriageway and a single centerline appears, the ego car proceeding in the left lane on smooth pavement with light traffic and no oncoming vehicles. Ahead on the right edge, a pedestrian walks away along the curb, moving aside to create space for the ego vehicle. Very close on the left foreground, a large truck is stopped at the curb with its nose protruding slightly, narrowing the lane and reducing clearance with the pedestrian. No salient signs or signals are visible.", "hazard_reasoning": "There is a male pedestrian wearing blue pants and a gray shirt and walking away from the ego car on the right side of the road, because he is moving to create space for the ego car. The driver should slow down to ensure the pedestrian has sufficient space and to avoid a potential collision."}
{"id": "train_07176", "split": "train", "clip_key": "2020-0210-155354_038973_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "038973"}, "frames": ["2020-0210-155354_038973_movie_t-3.jpg", "2020-0210-155354_038973_movie_t-2.jpg", "2020-0210-155354_038973_movie_t-1.jpg", "2020-0210-155354_038973_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with multiple same-direction lanes and smooth asphalt runs past midrise buildings, with a painted median and light to moderate traffic; cones and barricades line the left curb as a small roadside work area. A white truck ahead in the ego lane drives away at a steady pace, effectively setting the ego vehicle's speed. To the right, a brown boxy car draws alongside and overtakes in the adjacent lane, moving slightly ahead of the ego car. Farther ahead, several cars continue straight in the right lanes with stable gaps and no evident braking. No salient signals are visible, and the curbside barriers remain outside the travel lane.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. It is directly ahead in your lane, potentially limiting visibility and requiring caution to avoid sudden braking."}
{"id": "train_07177", "split": "train", "clip_key": "2020-0214-145407_036004_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "036004"}, "frames": ["2020-0214-145407_036004_movie_t-3.jpg", "2020-0214-145407_036004_movie_t-2.jpg", "2020-0214-145407_036004_movie_t-1.jpg", "2020-0214-145407_036004_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain a safe following distance", "environment_perception": "A dense urban corridor with tall buildings lines a two-lane same-direction road; the pavement is dry and the right edge is narrowed by cones beside a green-fenced work zone, so traffic is heavy and slow. A white box truck directly ahead in the ego lane slows because a truck farther ahead in the same lane is slowing, and it sets the ego vehicle's pace. In the adjacent left lane, several trucks queue and crawl alongside, reducing opportunities to merge. Farther ahead, the darker cargo truck that causes the slowdown continues at a reduced speed in the ego lane. No oncoming traffic is visible.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane, because of a truck ahead of it slowing down. Therefore, the truck ahead is decelerating and you should reduce speed to avoid a collision."}
{"id": "train_07178", "split": "train", "clip_key": "titan_clip_897_000420_movie", "source": {"subset": "titan", "scenario": "clip_897", "frame": "000420"}, "frames": ["titan_clip_897_000420_movie_t-3.jpg", "titan_clip_897_000420_movie_t-2.jpg", "titan_clip_897_000420_movie_t-1.jpg", "titan_clip_897_000420_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A dense urban commercial street with a single narrow undivided lane is shown; the asphalt is worn but intact and vehicle flow is light, though the lane is pinched by curbside activity. Ahead on the left, a white delivery truck is stopped with its rear doors open while workers unload, and one handler pushes a cart partly in the roadway, narrowing the path and constraining the ego vehicle's pace. Farther ahead in the same lane, another white box truck is stopped, forming a stationary obstacle. On the right side, a pedestrian in a white shirt carrying a handbag walks toward the ego car along the sidewalk. Bollards and a row of parked bicycles line the right edge, further tightening the corridor.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and walking, on the right side of the road, towards the ego-car. The driver should manoeuvre around the pedestrian carefully to avoid a potential collision as they are entering the vehicle's path."}
{"id": "train_07179", "split": "train", "clip_key": "titan_clip_364_000132_movie", "source": {"subset": "titan", "scenario": "clip_364", "frame": "000132"}, "frames": ["titan_clip_364_000132_movie_t-3.jpg", "titan_clip_364_000132_movie_t-2.jpg", "titan_clip_364_000132_movie_t-1.jpg", "titan_clip_364_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian.", "environment_perception": "An urban residential street is shown, a narrow two-way roadway without a centerline, bordered closely by buildings; the asphalt looks intact and traffic is light with no moving vehicles. Ahead on the left edge, a pedestrian carrying a black backpack and holding an umbrella walks away from the ego car along the curb, remaining near the wall. Slightly ahead near the center-right, another pedestrian walks in the same direction along the painted edge line, partly occupying the travel path and slowing the ego vehicle. Farther ahead, a third person continues along the lane, further constraining the pace on the tight roadway. A circular speed-limit sign stands on the left, and cones with planter pots line the right shoulder.", "hazard_reasoning": "There is a pedestrian carrying a black backpack and an umbrella and walking on the left side of the road, away from the ego car. The pedestrian could step into the vehicle's path unexpectedly near the blind curve ahead, so the driver should be aware of their presence."}
{"id": "train_07180", "split": "train", "clip_key": "titan_clip_347_000486_movie", "source": {"subset": "titan", "scenario": "clip_347", "frame": "000486"}, "frames": ["titan_clip_347_000486_movie_t-3.jpg", "titan_clip_347_000486_movie_t-2.jpg", "titan_clip_347_000486_movie_t-1.jpg", "titan_clip_347_000486_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street has a very narrow two-way roadway without lane markings or a median, paved with interlocking bricks; traffic is light and slow. Ahead in the center of the lane, a worker pushes a small green cart away at walking speed, occupying the path and constraining the ego vehicle's pace. On the right edge, a pedestrian in a brown uniform walks toward the ego vehicle while pushing large bins, moving partly in the roadway and potentially entering the ego lane. Near the right curb, another person stands by trash containers and may step into the lane. Parked bicycles and a scooter line the right side, narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a brown uniform, walking on the right side of the road, towards the ego car, because they are pushing large bins. The driver should slow down as the pedestrian pushing bins may step into the lane unexpectedly."}
{"id": "train_07181", "split": "train", "clip_key": "titan_clip_1082_000288_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1082_000288_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1082_000288_movie_t-3_augB1.jpg", "titan_clip_1082_000288_movie_t-2_augB1.jpg", "titan_clip_1082_000288_movie_t-1_augB1.jpg", "titan_clip_1082_000288_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian on road", "environment_perception": "An urban commercial street with a narrow carriageway lacking a centerline curves gently to the right; the asphalt looks smooth and traffic is light with no moving vehicles. Ahead slightly left, a woman wearing a cream blouse and short black dress walks diagonally across toward the right and may enter the ego lane. On the near left edge, another pedestrian walks along the roadway toward the camera close to the curb, constraining space. A white box truck is stopped at the left side ahead, narrowing the usable lane and obscuring the view beyond. Farther ahead a person moves away along the right curb. Rows of parked bicycles line the left, forming a continuous roadside obstacle.", "hazard_reasoning": "There is a lady wearing a cream blouse with a short black dress walking on the left side of the road. Since she is walking on the roadway rather than the sidewalk, the driver should be aware of her presence to avoid a collision."}
{"id": "train_07182", "split": "train", "clip_key": "2020-0205-103411_055541_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "055541"}, "frames": ["2020-0205-103411_055541_movie_t-3.jpg", "2020-0205-103411_055541_movie_t-2.jpg", "2020-0205-103411_055541_movie_t-1.jpg", "2020-0205-103411_055541_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial in left-hand traffic approaches a signalized intersection; the asphalt is smooth and a metal guardrail separates oncoming lanes on the right. Traffic is moderate and temporarily stopped at the light. A black van directly ahead in the center lane is stationary, holding the ego vehicle because the signal is red. A dark station wagon slightly ahead to the left also waits in the left lane in the same queue. Across the median on the right, oncoming vehicles including a white box truck and a red car proceed through the junction without affecting the ego lane. Overhead signals ahead show red for the ego direction, and no obstacles or work zones are visible.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, because of the red traffic light. The driver must stop to comply with the traffic signal and avoid a collision with the stopped vehicle ahead."}
{"id": "train_07183", "split": "train", "clip_key": "titan_clip_778_000414_movie", "source": {"subset": "titan", "scenario": "clip_778", "frame": "000414"}, "frames": ["titan_clip_778_000414_movie_t-3.jpg", "titan_clip_778_000414_movie_t-2.jpg", "titan_clip_778_000414_movie_t-1.jpg", "titan_clip_778_000414_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban intersection with narrow two-way streets and no median comes into view; the ego vehicle pauses on smooth pavement at a side street and overall traffic is light. A bicyclist passes close in the left foreground, riding rightward across the ego vehicle's path and briefly blocking the way. From the right curb, a pedestrian carrying a handbag walks across the street in front of the ego car outside any marked crosswalk, moving toward the left and occupying the space the ego would take. Another pedestrian on the left sidewalk near storefronts proceeds along the curb without entering the roadway. A painted 30 speed marking is visible on the road ahead.", "hazard_reasoning": "There is a female pedestrian wearing a pink shirt and black shirt, and carrying a handbag, crossing the street from left to right in front of the ego-car, because there is no crosswalk. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_07184", "split": "train", "clip_key": "2020-0226-140503_080138_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "080138"}, "frames": ["2020-0226-140503_080138_movie_t-3.jpg", "2020-0226-140503_080138_movie_t-2.jpg", "2020-0226-140503_080138_movie_t-1.jpg", "2020-0226-140503_080138_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with no physical median appears, the asphalt dry and intact, and same-direction traffic is heavy and mostly stopped. A white car directly ahead in the ego lane is halted because of the congestion, holding the ego vehicle at a standstill. In the adjacent right same-direction lane, a line of cars inches forward beside the ego vehicle, leaving little space for merging and reinforcing the queue. In the opposite lanes to the right, oncoming cars move past steadily within their lanes, separated by the center line and not interacting with the ego vehicle.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle and account for the slow-moving traffic."}
{"id": "train_07185", "split": "train", "clip_key": "titan_clip_743_000444_movie", "source": {"subset": "titan", "scenario": "clip_743", "frame": "000444"}, "frames": ["titan_clip_743_000444_movie_t-3.jpg", "titan_clip_743_000444_movie_t-2.jpg", "titan_clip_743_000444_movie_t-1.jpg", "titan_clip_743_000444_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware", "environment_perception": "An urban shopping street with a single undivided lane and smooth pavement appears, and motor traffic is light while foot traffic is steady. Several pedestrians are ahead near the center of the road, walking away and drifting within the travel way, which moderates the ego vehicle's pace. A pedestrian wearing a white shirt and black pants stands on the left side of the road by the curb, waiting and may enter the lane as the car approaches. Farther ahead more people cluster by shopfronts on both sides, edging toward the roadway without stepping into the path. Orange cones line the right curb beside a recessed parking bay with a stationary black SUV, and many bicycles are parked along the left storefronts.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, standing on the left side of the road. The driver should be aware of this pedestrian's potential movement into the roadway to avoid a collision."}
{"id": "train_07186", "split": "train", "clip_key": "titan_clip_940_000042_movie", "source": {"subset": "titan", "scenario": "clip_940", "frame": "000042"}, "frames": ["titan_clip_940_000042_movie_t-3.jpg", "titan_clip_940_000042_movie_t-2.jpg", "titan_clip_940_000042_movie_t-1.jpg", "titan_clip_940_000042_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on left side", "environment_perception": "A narrow urban side street with one lane each way and no median runs between storefronts; the pavement is smooth and traffic is light. A white van ahead in the same direction moves slowly near the center, slightly constraining the ego vehicle's pace. On the left side, a pedestrian wearing a striped shirt and black pants walks toward the ego car along the edge of the road, close to the travel lane and relevant to the ego path. Another pedestrian on the right side walks away beside the curb, keeping to the margin. Boxes and a folded signboard sit on the right edge, adding minor roadside clutter.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt and black pants, walking on the left side of the road, towards the ego car. The pedestrian could step into your path unexpectedly, so the driver should be aware under this situation."}
{"id": "train_07187", "split": "train", "clip_key": "2020-0207-101955_004752_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "004752"}, "frames": ["2020-0207-101955_004752_movie_t-3.jpg", "2020-0207-101955_004752_movie_t-2.jpg", "2020-0207-101955_004752_movie_t-1.jpg", "2020-0207-101955_004752_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban commercial corridor with a multi-lane two-way road and no physical median is seen, the pavement dry and smooth, and traffic moving slowly near a signalized intersection. A black truck is stopped ahead in the ego lane, held by congestion ahead, and it blocks the ego car's path. In the lane to the left, a white van slightly ahead rolls slowly in the same direction, constraining any lateral maneuver alongside the truck. In the opposite lanes on the right side of the roadway, a blue cargo truck approaches the intersection at a steady pace but remains separated as oncoming traffic. Overhead blue direction boards for city destinations are visible above the lanes.", "hazard_reasoning": "There is a black truck stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle under these conditions."}
{"id": "train_07188", "split": "train", "clip_key": "2020-0131-135401_010678_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "010678"}, "frames": ["2020-0131-135401_010678_movie_t-3.jpg", "2020-0131-135401_010678_movie_t-2.jpg", "2020-0131-135401_010678_movie_t-1.jpg", "2020-0131-135401_010678_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane per direction and a painted centerline runs between close buildings; the pavement looks smooth and traffic is light. A white truck in the ego lane ahead drives away slowly, effectively setting the ego car's pace. An oncoming black minivan approaches in the opposite lane to the right, easing past in the tight space while staying in its lane. No pedestrians, cyclists, or unusual traffic controls are visible, and there are no obstructions besides the constrained roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07189", "split": "train", "clip_key": "titan_clip_109_000198_movie", "source": {"subset": "titan", "scenario": "clip_109", "frame": "000198"}, "frames": ["titan_clip_109_000198_movie_t-3.jpg", "titan_clip_109_000198_movie_t-2.jpg", "titan_clip_109_000198_movie_t-1.jpg", "titan_clip_109_000198_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban commercial street with a single narrow lane and no median is seen ahead, the pavement smooth and traffic light, with zebra crosswalks spanning the intersection. A pedestrian in a black T-shirt and brown pants crosses rightward at the near crosswalk directly ahead, moving through the ego lane. Another pedestrian in a white shirt crosses left to right near the center of the lane, briefly occupying the path in front. Several others wait at the sidewalks on both sides without stepping into the road. Parked vehicles line both curbs, including a white van at the left edge close to the crosswalk that narrows the available space.", "hazard_reasoning": "There is a pedestrian wearing black t-shirt and brown pant crossing the street to the right side at the crosswalk. The pedestrian is entering the vehicle's path at the crosswalk and the driver must yield to avoid a collision."}
{"id": "train_07190", "split": "train", "clip_key": "2020-0205-103411_097048_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "097048"}, "frames": ["2020-0205-103411_097048_movie_t-3.jpg", "2020-0205-103411_097048_movie_t-2.jpg", "2020-0205-103411_097048_movie_t-1.jpg", "2020-0205-103411_097048_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with good pavement is divided from the opposite carriageway by a median, and traffic in the ego direction is heavy and queued. A white flatbed truck directly ahead in the ego lane is stopped at a red traffic light, holding the ego vehicle. To the left, several cars line up in the adjacent same-direction lane, creeping with the queue and limiting any chance to merge. Slightly farther ahead in the next lane, a dark car inches forward but remains behind the intersection. The overhead signal facing the approach shows red.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of a red traffic light. Because the truck ahead has halted at the red light, the driver must stop to avoid a rear-end collision."}
{"id": "train_07191", "split": "train", "clip_key": "2020-0221-115122_030043_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "030043"}, "frames": ["2020-0221-115122_030043_movie_t-3.jpg", "2020-0221-115122_030043_movie_t-2.jpg", "2020-0221-115122_030043_movie_t-1.jpg", "2020-0221-115122_030043_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with a concrete barrier on the left separating a side road; the pavement is dry and intact, and traffic is heavy with stop-and-go queuing. Directly ahead in the ego lane, a white hatchback remains stopped because of congestion and blocks the ego vehicle. To the right, a silver van and other cars crawl in the adjacent lane alongside the ego car, constraining any lane change. Farther ahead under the structure, a line of vehicles including a small box truck inches forward in the same direction, setting the slow pace.", "hazard_reasoning": "A white hatchback is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop promptly to avoid a rear-end collision with the halted vehicle ahead."}
{"id": "train_07192", "split": "train", "clip_key": "titan_clip_188_000372_movie", "source": {"subset": "titan", "scenario": "clip_188", "frame": "000372"}, "frames": ["titan_clip_188_000372_movie_t-3.jpg", "titan_clip_188_000372_movie_t-2.jpg", "titan_clip_188_000372_movie_t-1.jpg", "titan_clip_188_000372_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian at curb.", "environment_perception": "A narrow urban two-way street with no median runs between tall buildings, the pavement is in good condition, and traffic is light. A white van ahead in the ego lane moves slowly near the middle of the road, constraining the ego vehicle's pace as it threads past parked cars. On the right edge close to the travel lane, a pedestrian wearing a blue shirt and brown pants holds a brush and a blue bucket and stands sweeping by the curb, potentially stepping into the lane. Slightly farther ahead on the right, a pedestrian with a cane walks along the curb in the same direction, close to the roadway. A parked white SUV on the left narrows the lane.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and brown pants, holding a brush and a blue bucket, standing on the right side of the road. The driver should yield to avoid a collision, as the pedestrian may step onto the roadway unexpectedly while working near the curb."}
{"id": "train_07193", "split": "train", "clip_key": "titan_clip_1368_000432_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1368_000432_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1368_000432_movie_t-3_augB1.jpg", "titan_clip_1368_000432_movie_t-2_augB1.jpg", "titan_clip_1368_000432_movie_t-1_augB1.jpg", "titan_clip_1368_000432_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian crossing ahead", "environment_perception": "A quiet urban street with smooth dry pavement and no centerline extends ahead, curving gently to the right, and traffic is light. The ego vehicle proceeds along the left side beside buildings and a walled sidewalk with railings. On the left near the curb, a pedestrian begins crossing toward the right side of the road, moving diagonally across the lane and potentially entering the vehicle's path. Farther ahead near the center, a cyclist travels away in the same direction near the middle of the roadway, likely to influence the ego vehicle's pace. No traffic signals or other vehicles are visible.", "hazard_reasoning": "There is a pedestrian on the left side of the road, crossing the right side of the road. The pedestrian may step into the vehicle's path unexpectedly, so the driver should be cautious."}
{"id": "train_07194", "split": "train", "clip_key": "2020-0203-154554_037760_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "037760"}, "frames": ["2020-0203-154554_037760_movie_t-3.jpg", "2020-0203-154554_037760_movie_t-2.jpg", "2020-0203-154554_037760_movie_t-1.jpg", "2020-0203-154554_037760_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial runs beneath elevated expressway structures, with three same-direction lanes and a right-side guardrail; the pavement is smooth and traffic is moderate. A white box truck drives ahead in the ego lane and effectively sets the pace. To the right, a silver minivan travels slightly ahead in the adjacent lane, continuing straight without changing lanes. On the left, a small silver van moves forward near the curb a little behind the ego vehicle. Farther ahead, a few cars proceed in the center and right lanes. Overhead gantries carry blue direction signs, and no unusual hazards or work zones are visible.", "hazard_reasoning": "There is a white truck driving in the ego lane. Follow the vehicle ahead to maintain a safe distance and avoid collision if it brakes suddenly."}
{"id": "train_07195", "split": "train", "clip_key": "2020-0203-154554_068561_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_068561_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_068561_movie_t-3_augB1.jpg", "2020-0203-154554_068561_movie_t-2_augB1.jpg", "2020-0203-154554_068561_movie_t-1_augB1.jpg", "2020-0203-154554_068561_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the motorcycle ahead", "environment_perception": "An urban two-way arterial with two lanes each direction and no median; the pavement is smooth and traffic is light to moderate as the scene approaches a signalized intersection. Oncoming cars move steadily in their right-side lanes, while the ego vehicle travels in the leftmost lane for its direction. A motorcycle ahead in the ego lane rides straight at a steady pace through the crosswalk area, directly in our path and setting the pace amid light traffic. A silver car in the adjacent right lane slightly ahead continues straight, paralleling us and limiting an immediate lane change. At the left crosswalk, a bicyclist rolls forward into the crossing, which may bring them near the ego lane.", "hazard_reasoning": "There is a motorcycle driving in the ego lane due to no traffic congestion, in front of the ego car. This places the motorcycle directly ahead in your lane, so you should be aware of its movements to maintain a safe following distance and avoid sudden maneuvers."}
{"id": "train_07196", "split": "train", "clip_key": "2020-0204-150838_063889_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "063889"}, "frames": ["2020-0204-150838_063889_movie_t-3.jpg", "2020-0204-150838_063889_movie_t-2.jpg", "2020-0204-150838_063889_movie_t-1.jpg", "2020-0204-150838_063889_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial curves gently right with smooth asphalt and guardrails, running beside an elevated expressway; traffic is moderate and mostly heavy trucks. A black dump truck is directly ahead in the ego lane and slows, constraining the ego vehicle's pace. In the adjacent left lane, a large white box truck travels slightly ahead at a steady speed, limiting an immediate move left. Farther ahead in the left lane, another truck continues straight at similar speed, keeping the platoon compact. A Route 357 marker stands on the left verge, and an overhead gantry sign appears ahead.", "hazard_reasoning": "There is a black truck slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a potential collision due to the truck's reduced speed."}
{"id": "train_07197", "split": "train", "clip_key": "2020-0207-101955_088810_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "088810"}, "frames": ["2020-0207-101955_088810_movie_t-3.jpg", "2020-0207-101955_088810_movie_t-2.jpg", "2020-0207-101955_088810_movie_t-1.jpg", "2020-0207-101955_088810_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated expressway with three same-direction lanes and concrete barriers on both sides appears dry and in good condition, and traffic flows light to moderate. A white box truck ahead in the ego lane continues at a steady speed and effectively sets the pace. A darker passenger car runs farther ahead in the adjacent lane, maintaining course without affecting the ego vehicle. On the right shoulder, maintenance trucks are parked and several workers stand by a row of orange cones that partially encroach on the rightmost lane, creating a narrowed work zone. No traffic signals or oncoming vehicles are visible.", "hazard_reasoning": "The presence of workers and cones on the shoulder indicates active roadwork adjacent to the travel lanes, requiring the driver to reduce speed and maintain a safe clearance."}
{"id": "train_07198", "split": "train", "clip_key": "2020-0207-101955_006184_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "006184"}, "frames": ["2020-0207-101955_006184_movie_t-3.jpg", "2020-0207-101955_006184_movie_t-2.jpg", "2020-0207-101955_006184_movie_t-1.jpg", "2020-0207-101955_006184_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between midrise buildings, separated from oncoming lanes by a hedge median; the pavement looks smooth and traffic is moderate and flowing. A green truck travels ahead in the ego lane at a steady speed, effectively setting the ego vehicle's pace. A white van in the adjacent left lane moves slightly ahead and continues straight parallel to the ego path. Farther ahead, a dark car in the left lane proceeds forward with clear spacing from the truck. An overhead blue guide sign indicates Route 305 toward Ikebukuro 4 km.", "hazard_reasoning": "There is a green truck driving in the ego lane, in front of the ego car, because of green traffic lights. The driver should follow the vehicle ahead to maintain safe spacing and ensure smooth traffic flow."}
{"id": "train_07199", "split": "train", "clip_key": "titan_clip_252_000336_movie", "source": {"subset": "titan", "scenario": "clip_252", "frame": "000336"}, "frames": ["titan_clip_252_000336_movie_t-3.jpg", "titan_clip_252_000336_movie_t-2.jpg", "titan_clip_252_000336_movie_t-1.jpg", "titan_clip_252_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with no lane markings leads toward a small intersection without signals; the pavement looks smooth and traffic is very light. A stop sign and a right-turn arrow stand on the right at the junction. Ahead right, a man in a black suit holding a briefcase waits at the curb to cross to the left and may step into the ego lane. At the junction, a cyclist moves right to left across the opening, briefly occupying the potential path ahead. On the left edge near the ego vehicle, a pedestrian walks away along the curb and remains out of the lane. Bicycles are parked against the right wall, and the close buildings restrict the view into the cross street.", "hazard_reasoning": "There is a man wearing a black suit, holding a briefcase, and waiting to cross on the right side of the road to the left side. The pedestrian may step into the road unexpectedly, so the driver should slow down to maintain safety."}
{"id": "train_07200", "split": "train", "clip_key": "2020-0129-105040_058995_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "058995"}, "frames": ["2020-0129-105040_058995_movie_t-3.jpg", "2020-0129-105040_058995_movie_t-2.jpg", "2020-0129-105040_058995_movie_t-1.jpg", "2020-0129-105040_058995_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian movement", "environment_perception": "An urban neighborhood scene shows the ego vehicle approaching a small unsignalized intersection on a narrow two-way road with no median. The pavement is dry and smooth, and traffic is light with no moving vehicles close by. On the left side near the intersection, a pedestrian wearing a purple coat and carrying a handbag walks away from the ego car along the sidewalk beside the crosswalk. Just beyond the crosswalk on the right, a white truck is parked at the curb, protruding slightly into the lane and constricting the passage. The approach crosses a short bridge with concrete barriers.", "hazard_reasoning": "There is a pedestrian carrying a handbag, wearing a purple coat, and walking away from the ego car, on the left side of the intersection. The pedestrian could re-enter the roadway unexpectedly, so the driver should be aware."}
{"id": "train_07201", "split": "train", "clip_key": "2020-0225-102455_077330_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "077330"}, "frames": ["2020-0225-102455_077330_movie_t-3.jpg", "2020-0225-102455_077330_movie_t-2.jpg", "2020-0225-102455_077330_movie_t-1.jpg", "2020-0225-102455_077330_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three same-direction lanes and a guardrail median stretches ahead on smooth pavement, and traffic flows at light to moderate density. A white van ahead in the ego lane drives straight and moves away, setting the immediate pace. To the left, a motorcycle travels slightly ahead in the left lane, continuing straight parallel to the ego vehicle. To the right, a small truck in the median-side lane proceeds straight a short distance ahead. Overhead blue signs show Route 15 straight and indicate a left turn in 180 m. Pedestrians remain on the left sidewalk behind railings.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. The van may slow down or brake suddenly, so maintain caution and a safe distance."}
{"id": "train_07202", "split": "train", "clip_key": "titan_clip_954_000288_movie", "source": {"subset": "titan", "scenario": "clip_954", "frame": "000288"}, "frames": ["titan_clip_954_000288_movie_t-3.jpg", "titan_clip_954_000288_movie_t-2.jpg", "titan_clip_954_000288_movie_t-1.jpg", "titan_clip_954_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban two-way street with narrow single lanes and no median runs straight between buildings; the pavement is intact and traffic is light with no oncoming vehicles. On the right side ahead, two pedestrians carrying handbags walk away from the ego vehicle along the red shoulder, staying near the curb. Also on the right, a man with a backpack walks away close to the travel lane, reducing lateral clearance. At the left curb near the camera, a silver car is stopped with its driver-side door open into the lane, narrowing the passage as the ego approaches.", "hazard_reasoning": "There are two pedestrians carrying handbags walking on the right side of the road, away from the ego car. The driver should carefully manoeuvre around them to avoid potential collisions."}
{"id": "train_07203", "split": "train", "clip_key": "2020-0213-143552_026668_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "026668"}, "frames": ["2020-0213-143552_026668_movie_t-3.jpg", "2020-0213-143552_026668_movie_t-2.jpg", "2020-0213-143552_026668_movie_t-1.jpg", "2020-0213-143552_026668_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "A busy urban two-way arterial approaches a wide signalized intersection with multiple same-direction lanes, smooth pavement, and moderate traffic. Directly ahead in the ego lane, a black motorcycle is stopped at the stop line, waiting to take a right turn, so the ego car queues behind it. To the left, a silver van in a parallel same-direction lane is also halted near the crosswalk in the queue. Oncoming cars are visible across the intersection on the opposite carriageway. Groups of pedestrians wait on both sidewalks at the marked crosswalks without stepping into the roadway, while overhead traffic signals and prominent zebra markings control the junction.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego car because it is waiting to take a right turn. Stop immediately to avoid colliding with the motorcycle waiting to turn."}
{"id": "train_07204", "split": "train", "clip_key": "2020-0225-102455_006956_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "006956"}, "frames": ["2020-0225-102455_006956_movie_t-3.jpg", "2020-0225-102455_006956_movie_t-2.jpg", "2020-0225-102455_006956_movie_t-1.jpg", "2020-0225-102455_006956_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with multiple lanes and a painted double-white median runs between mid-rise buildings; the pavement is smooth and traffic is moderate. A brown dump truck directly ahead in the ego lane continues forward under a green signal, setting the ego car's pace. To its left, a black sedan slightly ahead cruises in the adjacent same-direction lane, limiting opportunities to pass. On the opposite side to the right, a white car approaches in the oncoming lane beyond the median without affecting the ego path. A few vehicles are stopped along the left curb near the camera, but they remain outside the travel lane.", "hazard_reasoning": "There is a brown truck driving in front of the ego car in the ego lane, because of the green traffic light. Because the signal has turned green, you should start moving promptly to follow the traffic flow and avoid obstructing vehicles behind you."}
{"id": "train_07205", "split": "train", "clip_key": "titan_clip_302_000318_movie", "source": {"subset": "titan", "scenario": "clip_302", "frame": "000318"}, "frames": ["titan_clip_302_000318_movie_t-3.jpg", "titan_clip_302_000318_movie_t-2.jpg", "titan_clip_302_000318_movie_t-1.jpg", "titan_clip_302_000318_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban residential two-way street with no marked centerline and smooth pavement curves gently right, and traffic is light. On the left edge ahead, a man wearing a white shirt and beige pants pushes a cart toward the ego vehicle along the curb, moving slowly and close to the travel lane and may enter the ego lane. No signals are visible and no other vehicles immediately interact with the ego car.", "hazard_reasoning": "There is a man wearing a white shirt and beige pants, and pushing a cart towards the ego car, on the left side of the road. The pedestrian may cross or obstruct the lane, so the driver should carefully manoeuvre to maintain a safe distance."}
{"id": "train_07206", "split": "train", "clip_key": "2020-0217-110854_023942_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "023942"}, "frames": ["2020-0217-110854_023942_movie_t-3.jpg", "2020-0217-110854_023942_movie_t-2.jpg", "2020-0217-110854_023942_movie_t-1.jpg", "2020-0217-110854_023942_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the bus at the red light.", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection on dry, well-marked pavement, and traffic is queued. A white-and-orange bus directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. To the left, a silver van in the adjacent same-direction lane waits alongside the bus. On the right, a cyclist near the curb moves along the side street by the intersection without entering the ego lane.", "hazard_reasoning": "There is a white-and-orange bus stopped in the ego lane, because of the red traffic light. The driver should stop now to avoid colliding with the halted bus at the red light."}
{"id": "train_07207", "split": "train", "clip_key": "2020-0210-155354_022892_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "022892"}, "frames": ["2020-0210-155354_022892_movie_t-3.jpg", "2020-0210-155354_022892_movie_t-2.jpg", "2020-0210-155354_022892_movie_t-1.jpg", "2020-0210-155354_022892_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road with smooth asphalt runs between a stone retaining wall and mid-rise buildings, and same-direction traffic moves slowly in heavy congestion. Directly ahead in the ego lane, a black van slows with the queue, constraining the ego vehicle's pace. Slightly ahead in the adjacent right lane, a silver minivan creeps forward in parallel and could block any move right. Near the right edge, a white commercial van travels alongside at low speed, holding position beside the ego car. An overhead blue guide sign indicates destinations with arrows and notes a split in 180 m, while several trucks farther ahead contribute to the slow flow.", "hazard_reasoning": "There is a black van slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe distance and avoid a potential collision."}
{"id": "train_07208", "split": "train", "clip_key": "titan_clip_304_000438_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_304_000438_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_304_000438_movie_t-3_augB1.jpg", "titan_clip_304_000438_movie_t-2_augB1.jpg", "titan_clip_304_000438_movie_t-1_augB1.jpg", "titan_clip_304_000438_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A quiet urban two-way street with single narrow lanes and no median stretches ahead, the pavement smooth and dry, with very light traffic and no vehicles nearby. Green painted edge lanes border both sides. Ahead on the right, a pedestrian in a black shirt and black shorts walks away within the ego lane, occupying part of the path and narrowing the clearance. Farther ahead near the center, a cyclist rides along the street in the same direction, broadly aligned with the ego lane. On the right edge, another person bends over just off the roadway at the curb, close to the travel lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black shorts, walking on the right hand side of the street, away from the ego-car, in the ego lane. The pedestrian occupies the ego lane ahead, posing a collision risk, so the driver should manoeuvre carefully around the pedestrian."}
{"id": "train_07209", "split": "train", "clip_key": "2020-0207-151349_065444_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "065444"}, "frames": ["2020-0207-151349_065444_movie_t-3.jpg", "2020-0207-151349_065444_movie_t-2.jpg", "2020-0207-151349_065444_movie_t-1.jpg", "2020-0207-151349_065444_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction is divided from oncoming lanes by closely spaced flexible posts; the asphalt looks smooth and traffic flows at a moderate pace. A white van far ahead in the ego lane proceeds straight and effectively sets the lane's pace. A dark sedan slightly ahead in the adjacent right same-direction lane cruises forward, remaining in its lane without affecting the ego vehicle. Oncoming vehicles to the right beyond the divider move steadily in the opposite direction. A large 50 marking on the roadway indicates the posted speed, and mid-rise buildings line both sides; no obstacles or work zones are visible.", "hazard_reasoning": "No immediate hazards detected, continue driving normally."}
{"id": "train_07210", "split": "train", "clip_key": "2020-0203-114632_046784_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "046784"}, "frames": ["2020-0203-114632_046784_movie_t-3.jpg", "2020-0203-114632_046784_movie_t-2.jpg", "2020-0203-114632_046784_movie_t-1.jpg", "2020-0203-114632_046784_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement and painted buffers carries moderate same-direction traffic under clear skies, with overhead signals visible ahead. A silver van directly ahead in the ego lane proceeds straight and gradually pulls away from the ego car, effectively setting the pace, consistent with the note that it is driving away. To the left, a silver sedan in the adjacent lane advances alongside and then edges ahead, remaining parallel to the ego path without merging. Farther ahead in the next lane to the right, a white box truck continues straight at steady speed and does not intrude into the ego lane. Overhead traffic lights mark an approaching intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07211", "split": "train", "clip_key": "2020-0225-102455_032366_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "032366"}, "frames": ["2020-0225-102455_032366_movie_t-3.jpg", "2020-0225-102455_032366_movie_t-2.jpg", "2020-0225-102455_032366_movie_t-1.jpg", "2020-0225-102455_032366_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging vehicles", "environment_perception": "A dense urban arterial with several same-direction lanes runs between tall buildings on smooth pavement, with a painted chevron island forming a right-turn lane; traffic is moderate and generally steady. A black van directly ahead of the ego vehicle signals and moves right into the adjacent right-turn lane, matching the right-turn-only markings. Farther ahead in the right lanes, a city bus and a box truck proceed slowly, tightening gaps in that queue. Another dark van to the left ahead continues straight in its lane without changing position.", "hazard_reasoning": "There is a black van, changing lanes from the ego lane to the right lane, because the right lane is a turning lane. Drivers should be aware of this maneuver to anticipate lateral movement and adjust speed accordingly."}
{"id": "train_07212", "split": "train", "clip_key": "titan_clip_353_000468_movie", "source": {"subset": "titan", "scenario": "clip_353", "frame": "000468"}, "frames": ["titan_clip_353_000468_movie_t-3.jpg", "titan_clip_353_000468_movie_t-2.jpg", "titan_clip_353_000468_movie_t-1.jpg", "titan_clip_353_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with interlocking-brick pavement runs between buildings, with no marked centerline or divider and light, slow traffic. The ego car proceeds along the left side typical of Japan. A small white mini-truck ahead in the same direction moves away at low speed and sets the pace. On the left edge near a parking entrance, a pedestrian wearing black pants and a black shirt and carrying a backpack walks away from the ego vehicle along the roadway where no sidewalk is evident and may enter the lane. On the right edge close to the camera, another pedestrian walks toward the ego car along the curb, briefly tightening the available space. A white sports car is parked at a lot entrance on the left, creating a narrow passing corridor.", "hazard_reasoning": "There's a pedestrian wearing black pants and a black shirt, and carrying a backpack, walking on the left side of the road, away from the ego car, because there is no sidewalk. This places the pedestrian directly in the driving path, increasing collision risk, so the driver should carefully manoeuvre to avoid them."}
{"id": "train_07213", "split": "train", "clip_key": "2020-0204-150838_034419_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "034419"}, "frames": ["2020-0204-150838_034419_movie_t-3.jpg", "2020-0204-150838_034419_movie_t-2.jpg", "2020-0204-150838_034419_movie_t-1.jpg", "2020-0204-150838_034419_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban multi-lane two-way avenue with smooth pavement and no physical median carries heavy, stop-and-go traffic toward a signalized intersection ahead. Directly ahead in the ego lane, a white van slows with brake lights illuminated in a queue, constraining the ego vehicle's pace because of traffic congestion. In the adjacent same-direction lane on the left, a dark van creeps forward alongside, occupying the space next to the ego car and moving at a similar slow pace. On the right side of the roadway, an oncoming white van proceeds through the junction in its lane without interacting with the ego vehicle. Overhead traffic lights are visible at the intersection.", "hazard_reasoning": "There is a white van slowing in front of the ego car in the ego lane, because of traffic congestion. You should slow down to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_07214", "split": "train", "clip_key": "2020-0204-103442_036479_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "036479"}, "frames": ["2020-0204-103442_036479_movie_t-3.jpg", "2020-0204-103442_036479_movie_t-2.jpg", "2020-0204-103442_036479_movie_t-1.jpg", "2020-0204-103442_036479_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane roadway runs under an elevated structure with metal guardrails and a right-side merge taper; the asphalt looks smooth and traffic is moderate. A white box truck directly ahead in the ego lane accelerates away, increasing the gap in front of the ego vehicle. In the adjacent right lane slightly ahead, a small white car continues straight at a similar pace without clear interaction. Along the right edge near the taper, a dark sedan travels alongside and may merge toward the ego lane as space opens. Red chevron boards on the left warn of the upcoming bend.", "hazard_reasoning": "There is a white truck accelerating in front of the ego car. Its sudden speed increase may close the gap unexpectedly and force abrupt braking if not responded to. Therefore, the driver should accelerate to maintain a safe following distance under this situation."}
{"id": "train_07215", "split": "train", "clip_key": "2020-0210-155354_001770_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "001770"}, "frames": ["2020-0210-155354_001770_movie_t-3.jpg", "2020-0210-155354_001770_movie_t-2.jpg", "2020-0210-155354_001770_movie_t-1.jpg", "2020-0210-155354_001770_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction runs through a busy shopping district, with sidewalk railings, smooth pavement, and slow, heavy traffic. A white car directly ahead in the ego lane is stopped with brake lights on amid a queue, consistent with congestion ahead, and it constrains the ego vehicle's pace. Oncoming vehicles in the right lane, including a dark sedan farther ahead, proceed steadily past. Pedestrians crowd both sidewalks near the roadway edges, some waiting near a crossing, but none enter the lane. A decorated van is stationed at the right curb beyond the stopped car, appearing parked and slightly narrowing the space by the curb.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, because of traffic congestion ahead. The driver must stop to avoid a collision with the halted vehicle ahead, as it poses an immediate risk."}
{"id": "train_07216", "split": "train", "clip_key": "2020-0204-150838_083837_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "083837"}, "frames": ["2020-0204-150838_083837_movie_t-3.jpg", "2020-0204-150838_083837_movie_t-2.jpg", "2020-0204-150838_083837_movie_t-1.jpg", "2020-0204-150838_083837_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with two same-direction lanes runs beside a guardrail and an elevated structure on the right, with trees on the left; the pavement appears smooth and dry, and traffic is heavy with a slow-moving queue. Directly ahead in the ego lane, a black hatchback slows due to congestion and constrains the ego car's pace. In the adjacent left lane slightly ahead, a white box truck proceeds slowly, paralleling the ego lane and limiting options to pass. Farther ahead, a line of trucks and cars in both lanes creeps forward, extending the queue.", "hazard_reasoning": "There's a black hatchback slowing down in front of the ego car, due to traffic congestion ahead. The driver should slow down to maintain a safe following distance and accommodate the reduced speed of the vehicle ahead."}
{"id": "train_07217", "split": "train", "clip_key": "2020-0220-102630_067991_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "067991"}, "frames": ["2020-0220-102630_067991_movie_t-3.jpg", "2020-0220-102630_067991_movie_t-2.jpg", "2020-0220-102630_067991_movie_t-1.jpg", "2020-0220-102630_067991_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Start moving", "environment_perception": "An urban three-lane road with dry, well-kept pavement carries moderate, slow traffic and no median is visible. A white van directly ahead in the ego lane accelerates and pulls away, leading our path. To the right, a black SUV in the adjacent lane travels alongside at a similar speed, limiting lateral maneuvering. Along the left curb, a small blue car creeps within the hatched shoulder near our lane edge and may merge. Overhead blue lane signs indicate that all lanes continue straight.", "hazard_reasoning": "There is a white van accelerating in front of the ego car, in the ego lane. The accelerating van may increase relative speed quickly, so the driver should start moving to maintain safe headway and avoid a sudden braking situation."}
{"id": "train_07218", "split": "train", "clip_key": "2020-0207-151349_058702_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_058702_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_058702_movie_t-3_augB1.jpg", "2020-0207-151349_058702_movie_t-2_augB1.jpg", "2020-0207-151349_058702_movie_t-1_augB1.jpg", "2020-0207-151349_058702_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban undivided multi-lane road runs through a dense city corridor, the pavement dry and smooth, with heavy, slow-moving traffic ahead in the same direction. A white sedan directly ahead in the ego lane slows in stop-and-go flow, constraining the ego car's pace because of congestion further up the road. To the right, a white van in the adjacent same-direction lane inches forward alongside, limiting room for a lane change. On the far left curb, a cyclist with a large backpack rides in the same direction near the ego lane and could drift toward the travel lane as vehicles pass.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The sedan's deceleration due to congestion requires the driver to slow down and maintain a safe distance."}
{"id": "train_07219", "split": "train", "clip_key": "2020-0217-144444_007969_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "007969"}, "frames": ["2020-0217-144444_007969_movie_t-3.jpg", "2020-0217-144444_007969_movie_t-2.jpg", "2020-0217-144444_007969_movie_t-1.jpg", "2020-0217-144444_007969_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane road curves sharply left, the pavement looks smooth, and traffic is light to moderate; an overhead signal for the lanes to the right shows green. A blue minivan directly ahead in the ego lane slows as the bend approaches, setting the ego vehicle's pace. To the right, a dark sedan ahead proceeds through the green light toward the intersection, staying in its lane and not entering the left-curving path. On the far left shoulder, a small work truck moves slowly while spraying water, remaining outside the ego lane.", "hazard_reasoning": "There is a blue minivan slowing down, in front of the ego car, because the road sharply bends to the left. Follow the vehicle ahead to maintain a safe distance and adapt to the bend-induced slowdown."}
{"id": "train_07220", "split": "train", "clip_key": "titan_clip_133_000444_movie", "source": {"subset": "titan", "scenario": "clip_133", "frame": "000444"}, "frames": ["titan_clip_133_000444_movie_t-3.jpg", "titan_clip_133_000444_movie_t-2.jpg", "titan_clip_133_000444_movie_t-1.jpg", "titan_clip_133_000444_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping district with a narrow two-way street lacks lane markings and has cobblestone pavement; the ego vehicle proceeds on the left under a building overhang, and traffic is light. A white van ahead in the ego path moves slowly near the center of the roadway, briefly pausing and constraining the ego vehicle's pace. On the right edge close to the carriageway, a pedestrian wearing a black dress walks toward the ego car, near the lane and may step into the path. Other pedestrians on the left storefront side continue along the sidewalk behind bollards without entering the road, and the corridor remains tight with close roadside obstacles.", "hazard_reasoning": "There is a pedestrian wearing a black dress, walking toward the ego car on the right side of the road. The pedestrian could step into the path of the vehicle unexpectedly, so the driver should slow down to ensure a safe clearance."}
{"id": "train_07221", "split": "train", "clip_key": "titan_clip_1232_000318_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1232_000318_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1232_000318_movie_t-3_augB1.jpg", "titan_clip_1232_000318_movie_t-2_augB1.jpg", "titan_clip_1232_000318_movie_t-1_augB1.jpg", "titan_clip_1232_000318_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrian", "environment_perception": "A dense urban commercial street narrows to a two-way carriageway with green-painted edges, no median, and fair pavement; traffic is light as the ego car proceeds in the left lane. A pedestrian in a white shirt carrying a backpack crosses from left to right directly ahead, using the roadway because there is no sidewalk and briefly occupying the ego path. Another pedestrian walks along the right edge by storefronts in the same direction, close to the lane. Far ahead a small white vehicle continues uphill in the same direction without affecting flow. Shop signs and displays line both curbs and slightly constrict the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, and crossing the street from left to right, in front of the ego car, because there is no sidewalk. The driver should yield because the pedestrian is stepping directly into the vehicle's path without a designated crossing area, creating a collision risk."}
{"id": "train_07222", "split": "train", "clip_key": "2020-0204-150838_039382_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "039382"}, "frames": ["2020-0204-150838_039382_movie_t-3.jpg", "2020-0204-150838_039382_movie_t-2.jpg", "2020-0204-150838_039382_movie_t-1.jpg", "2020-0204-150838_039382_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with dry pavement runs between tall buildings, with oncoming lanes separated by a line of cones on the right; traffic in our direction is queued and momentarily stopped. A white van directly ahead in the ego lane is stopped with brake lights on at a red traffic light, holding the ego car. Another white van slightly ahead in the lane to the left is also stopped at the same light, limiting room to change lanes. A silver car alongside at the front-left creeps forward in the adjacent lane near the curb, close to the ego vehicle. A signal head ahead shows red above the intersection, and overhead signage displays straight-through arrows.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of a red traffic light. You need to stop to avoid colliding with the halted vehicle."}
{"id": "train_07223", "split": "train", "clip_key": "2020-0203-154554_073690_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_073690_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_073690_movie_t-3_augB1.jpg", "2020-0203-154554_073690_movie_t-2_augB1.jpg", "2020-0203-154554_073690_movie_t-1_augB1.jpg", "2020-0203-154554_073690_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "be aware of motorcycle cutting in", "environment_perception": "An urban two-way arterial with multiple lanes and a painted median has dry pavement and moderate flow as the scene approaches a signalized intersection. A black motorcycle draws alongside on the left, cuts from the left lane into the ego lane, and then accelerates away from the ego car. A red mini car directly ahead in the ego lane continues straight through the junction and modestly sets the pace. Several cars and vans approach as oncoming traffic in the right-side lanes, remaining in their lanes. The traffic light ahead shows green, and parked vehicles line the left curb near the intersection.", "hazard_reasoning": "There is a black motorcycle cutting in from the left lane to the ego lane and driving away from the ego car. This sudden lane change by the motorcycle can reduce your buffer and may require you to adjust speed or position to maintain safety."}
{"id": "train_07224", "split": "train", "clip_key": "2020-0213-143552_028830_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "028830"}, "frames": ["2020-0213-143552_028830_movie_t-3.jpg", "2020-0213-143552_028830_movie_t-2.jpg", "2020-0213-143552_028830_movie_t-1.jpg", "2020-0213-143552_028830_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of parked vehicle", "environment_perception": "An urban two-way street with one narrow lane in each direction and no median runs between close buildings and bollards, the pavement smooth and traffic light. Ahead on the left curb, a silver hatchback is parked, slightly jutting into the travel lane and constraining the ego vehicle's path. On the right side near the curb, an oncoming cyclist rides toward the camera at low speed, staying on the red shoulder and approaching the crosswalk area. Farther ahead on the right, a black van is parked at the curb and remains stationary. A marked crosswalk spans the road ahead beneath an overhead AZUMA street sign, and no signals are visible.", "hazard_reasoning": "There is a silver hatchback parked, on the left side of the road. The parked hatchback could reduce lane width and distract the driver, so you should stay alert for its presence and adjust your path accordingly."}
{"id": "train_07225", "split": "train", "clip_key": "2020-0228-102841_003213_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "003213"}, "frames": ["2020-0228-102841_003213_movie_t-3.jpg", "2020-0228-102841_003213_movie_t-2.jpg", "2020-0228-102841_003213_movie_t-1.jpg", "2020-0228-102841_003213_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban underpass with a very narrow single-lane passage runs beneath a green steel bridge, bounded by white railings on both sides and uneven, shadowed pavement; no motor traffic is visible and flow is light. The ego-vehicle proceeds through the tunnel toward a bright street beyond. On the left near the camera, a pedestrian walks toward the vehicle within the left fenced walkway, staying outside the central lane. Ahead on the right, another pedestrian moves along the right walkway in the same direction as the vehicle and remains separated by the railing. The tunnel's low ceiling, strong contrast from glare at the exit, and the confined corridor create a short blind transition as the vehicle emerges.", "hazard_reasoning": "No hazards are present given the clear roadway and absence of oncoming traffic; normal driving can continue without adjustment."}
{"id": "train_07226", "split": "train", "clip_key": "titan_clip_1153_000360_movie", "source": {"subset": "titan", "scenario": "clip_1153", "frame": "000360"}, "frames": ["titan_clip_1153_000360_movie_t-3.jpg", "titan_clip_1153_000360_movie_t-2.jpg", "titan_clip_1153_000360_movie_t-1.jpg", "titan_clip_1153_000360_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow brick-paved single lane and no median shows light vehicle flow but a constrained roadway. A blue truck stands ahead on the right in the ego lane as its driver exits, partly blocking the path. A man in a white shirt walks away from the camera along the left edge of the lane, reducing clearance. Another pedestrian at the right foreground moves near the curb close to the lane. Bicycles and scooters are parked along the right curb, further narrowing the passage; no salient signals or posted speeds are visible.", "hazard_reasoning": "There is a blue truck parked on the right side of the road, in the ego lane, because the driver is exiting the vehicle. The parked truck obstructs the ego lane and may block oncoming traffic, so the driver should slow down to safely navigate around it."}
{"id": "train_07227", "split": "train", "clip_key": "2020-0205-103411_036568_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "036568"}, "frames": ["2020-0205-103411_036568_movie_t-3.jpg", "2020-0205-103411_036568_movie_t-2.jpg", "2020-0205-103411_036568_movie_t-1.jpg", "2020-0205-103411_036568_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a right-side guardrail has smooth pavement and moderate traffic that begins to pick up from a brief queue. The black Mercedes wagon directly ahead in the ego lane accelerates away from a stop as the signal ahead shows green, reopening space for the ego car. Farther ahead in the same lane, a white box truck continues straight at a steady pace and becomes the main vehicle limiting flow. On the left edge by the curb, a blue Prius is angled toward the lane and waiting, which may enter the ego lane when a gap opens. A green through signal is visible above the intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07228", "split": "train", "clip_key": "titan_clip_774_000252_movie", "source": {"subset": "titan", "scenario": "clip_774", "frame": "000252"}, "frames": ["titan_clip_774_000252_movie_t-3.jpg", "titan_clip_774_000252_movie_t-2.jpg", "titan_clip_774_000252_movie_t-1.jpg", "titan_clip_774_000252_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "be aware of passenger exiting van", "environment_perception": "An urban two-way street with one narrow lane each direction has no median and smooth pavement, and traffic is light as the car moves toward a small side intersection. A gray van is parked on the left edge of the ego lane while a passenger gets out, partly blocking the lane and directly constraining the ego vehicle's path. A cyclist ahead near the center-right approaches in the oncoming lane at low speed, likely to pass the stopped van before continuing. Several additional vehicles are parked along both curbs, narrowing the corridor but remaining static.", "hazard_reasoning": "A gray van is parked on the left side of the road, in the ego lane, because a passenger is getting out of the van. The passenger could step into traffic unexpectedly, so the driver needs to be aware of the exiting passenger."}
{"id": "train_07229", "split": "train", "clip_key": "2020-0129-105040_047592_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "047592"}, "frames": ["2020-0129-105040_047592_movie_t-3.jpg", "2020-0129-105040_047592_movie_t-2.jpg", "2020-0129-105040_047592_movie_t-1.jpg", "2020-0129-105040_047592_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated expressway, with two same-direction lanes, a right-side guardrail, and smooth pavement; traffic is light and flows steadily. A white van ahead in the left lane drives away from the ego car, continuing straight and remaining the nearest vehicle in the ego path. Farther ahead in the same lane, a small box truck proceeds at a steady speed, loosely pacing traffic in front. In the adjacent right lane, a white passenger car travels parallel at a similar speed without merging. Blue overhead direction signs are visible in the distance and no signals or unusual controls appear.", "hazard_reasoning": "There is a white van driving in the left lane, away from the ego car. The van could change lanes or decelerate unexpectedly, so the driver should monitor its movements and be prepared to react."}
{"id": "train_07230", "split": "train", "clip_key": "2020-0131-135401_003625_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003625"}, "frames": ["2020-0131-135401_003625_movie_t-3.jpg", "2020-0131-135401_003625_movie_t-2.jpg", "2020-0131-135401_003625_movie_t-1.jpg", "2020-0131-135401_003625_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "A narrow urban two-way street with one lane each direction and smooth pavement is shown, with light traffic and no oncoming vehicles visible. Strong sun glare from the upper right reduces contrast. A white box truck is stopped directly ahead in the ego lane, blocking the path and constraining the ego vehicle. On the left sidewalk a pedestrian pushes a stroller forward parallel to traffic, staying on the walkway and not entering the lane. An overhead circular sign displays 40, and guardrails line the right edge.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane. Since the truck is stationary ahead in the same lane, the driver must stop to avoid a collision and maintain safety."}
{"id": "train_07231", "split": "train", "clip_key": "titan_clip_870_000312_movie", "source": {"subset": "titan", "scenario": "clip_870", "frame": "000312"}, "frames": ["titan_clip_870_000312_movie_t-3.jpg", "titan_clip_870_000312_movie_t-2.jpg", "titan_clip_870_000312_movie_t-1.jpg", "titan_clip_870_000312_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrians", "environment_perception": "An urban back street with shops lines a single undivided lane of smooth asphalt and no centerline; vehicle traffic is light with no cars immediately ahead. Two pedestrians wearing blue shirts and black pants walk toward the ego vehicle along the right edge, close to the lane and may step into the path. A small group of pedestrians farther ahead near the center and left crosses the roadway, occupying the lane and constraining the ego vehicle's pace. Another pedestrian near the left curb walks in the same direction close to the travel lane and may drift into it. Parked bicycles along the right storefront narrow the roadside space.", "hazard_reasoning": "There are two pedestrians wearing blue shirts and black pants, walking on the right side of the road, towards the ego car. The driver should carefully maneuver to avoid these pedestrians as they are approaching the vehicle's path."}
{"id": "train_07232", "split": "train", "clip_key": "2020-0210-155354_031511_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "031511"}, "frames": ["2020-0210-155354_031511_movie_t-3.jpg", "2020-0210-155354_031511_movie_t-2.jpg", "2020-0210-155354_031511_movie_t-1.jpg", "2020-0210-155354_031511_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way arterial with a painted centerline and smooth pavement carries heavy, stop-and-go traffic. Directly ahead in the ego lane, a black hatchback is stopped due to congestion, holding the ego vehicle at a standstill. In the adjacent right same-direction lane, a white van inches forward parallel to the ego path, advancing slightly as gaps open. Farther ahead in that right lane, a small flatbed truck queues and creeps with the jam, contributing to the bottleneck. On the far right side of the roadway, oncoming cars pass steadily in their lane, separated by the center markings. No unusual signage or hazards are prominent.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car due to traffic congestion ahead. Stop to avoid colliding with the stopped vehicle ahead due to congestion."}
{"id": "train_07233", "split": "train", "clip_key": "2020-0220-151845_058840_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "058840"}, "frames": ["2020-0220-151845_058840_movie_t-3.jpg", "2020-0220-151845_058840_movie_t-2.jpg", "2020-0220-151845_058840_movie_t-1.jpg", "2020-0220-151845_058840_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs under an elevated structure with a curbside guardrail; the pavement is dry and traffic is heavy and mostly stopped. A red truck directly ahead in the ego lane is stopped because of congestion, blocking the path. In the adjacent right lane a white minivan queues slightly ahead, inching forward with the jam and limiting options to merge. A black sedan pulls up on the right beside the ego vehicle and waits in line, reducing lateral clearance.", "hazard_reasoning": "There is a red truck stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to avoid colliding with the halted truck ahead."}
{"id": "train_07234", "split": "train", "clip_key": "titan_clip_622_000384_movie", "source": {"subset": "titan", "scenario": "clip_622", "frame": "000384"}, "frames": ["titan_clip_622_000384_movie_t-3.jpg", "titan_clip_622_000384_movie_t-2.jpg", "titan_clip_622_000384_movie_t-1.jpg", "titan_clip_622_000384_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial backstreet with stone pavers forms a narrow shared roadway without lane markings or a median, and traffic is very light with no moving vehicles visible. Ahead on the left, two pedestrians wearing white pants carry bags and walk away from the ego car along the carriageway, occupying the left side and remaining in the ego vehicle's path. Farther ahead near the centerline, a few distant pedestrians move along the street but keep to the edges, posing minimal interaction. A parked bicycle stands at the right curb beside storefronts, and a small cluster of orange cones lines the right edge, leaving the travel way otherwise clear.", "hazard_reasoning": "There are two pedestrians wearing white pants, carrying bags, and walking on the left side of the road, away from the ego car. The driver should slow down due to the presence of pedestrians near the roadway who may cross unexpectedly."}
{"id": "train_07235", "split": "train", "clip_key": "2020-0207-151349_085657_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "085657"}, "frames": ["2020-0207-151349_085657_movie_t-3.jpg", "2020-0207-151349_085657_movie_t-2.jpg", "2020-0207-151349_085657_movie_t-1.jpg", "2020-0207-151349_085657_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrians in crosswalk", "environment_perception": "An urban arterial runs under an elevated expressway, with two-way traffic and multiple lanes separated by the viaduct columns; the pavement is dry and traffic is light. Directly ahead, three pedestrians-one male and two female, all wearing backpacks-cross from right to left on the marked crosswalk in front of the ego-car, causing it to wait. From the left, a cyclist rides across the same crosswalk toward the right, passing ahead of the ego vehicle and intersecting the pedestrians' path. In the oncoming lanes to the right, a white truck moves through the intersection. A no U-turn sign is visible on the right corner.", "hazard_reasoning": "There are one male, and two female pedestrians, all wearing backpacks, crossing the street in front of the ego-car, from the right side to the left, in a marked crosswalk. The driver should stop for pedestrians in the crosswalk to ensure their safety."}
{"id": "train_07236", "split": "train", "clip_key": "2020-0207-101955_012500_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "012500"}, "frames": ["2020-0207-101955_012500_movie_t-3.jpg", "2020-0207-101955_012500_movie_t-2.jpg", "2020-0207-101955_012500_movie_t-1.jpg", "2020-0207-101955_012500_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of unloading truck", "environment_perception": "An urban four-lane two-way street without a median has smooth pavement and steady, moderate flow among midrise buildings. The ego-vehicle proceeds in the left-side pair of lanes while delivery vehicles line the curb. A small green box truck ahead in the ego lane moves at a constant speed and effectively sets the pace. On the left curb, a white truck is parked with its rear doors open and being unloaded, narrowing the curb lane and keeping traffic to the right. Oncoming traffic includes a silver car approaching in the nearest opposing lane, with additional trucks farther back, all separated by the center lines.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. This unloading activity may cause the truck to unexpectedly move or obstruct the lane, so the driver should be aware of the unloading truck."}
{"id": "train_07237", "split": "train", "clip_key": "2020-0228-150133_002270_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "002270"}, "frames": ["2020-0228-150133_002270_movie_t-3.jpg", "2020-0228-150133_002270_movie_t-2.jpg", "2020-0228-150133_002270_movie_t-1.jpg", "2020-0228-150133_002270_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "An urban two-way street with one lane each direction runs between dense shops, the pavement dry and intact, and traffic moves at a slow-to-moderate pace. A silver van is parked on the left side within the ego lane, reducing usable width. Directly ahead a white box truck in the ego lane creeps forward to pass the parked van, constraining the ego vehicle's pace. In the opposing lane an approaching black taxi and a motorcycle near the curb travel close to the centerline, limiting room as vehicles thread through.", "hazard_reasoning": "There is a silver van, which is in the ego lane, parked on the left side of the road. The parked van blocks the driving lane and requires careful manoeuvring around it to avoid collision."}
{"id": "train_07238", "split": "train", "clip_key": "2020-0203-114632_065537_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "065537"}, "frames": ["2020-0203-114632_065537_movie_t-3.jpg", "2020-0203-114632_065537_movie_t-2.jpg", "2020-0203-114632_065537_movie_t-1.jpg", "2020-0203-114632_065537_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Be aware of cyclist at crossing", "environment_perception": "An urban multi-lane arterial with no physical median and smooth dry pavement approaches a wide signalized intersection beneath a green pedestrian overpass, with light to moderate traffic. Ahead beyond the junction, a blue truck and a few cars in the same direction continue straight and gradually pull away. Several oncoming cars pass through the opposite lanes beyond the intersection without changing course. To the right at the cross street, a small flatbed truck waits near the corner and may enter ahead of the ego lane. At the pedestrian crossing, a cyclist wearing black pants waits to cross and could enter the ego path when permitted.", "hazard_reasoning": "There is a cyclist wearing black pants waiting to cross at the pedestrian crossing. The cyclist may enter the roadway when the signal changes, so the driver should be aware and prepared to yield under these circumstances."}
{"id": "train_07239", "split": "train", "clip_key": "2020-0220-102630_100063_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "100063"}, "frames": ["2020-0220-102630_100063_movie_t-3.jpg", "2020-0220-102630_100063_movie_t-2.jpg", "2020-0220-102630_100063_movie_t-1.jpg", "2020-0220-102630_100063_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes runs past shops and apartments, bordered by railings on the left and a high concrete wall on the right; the pavement is dry and smooth, and traffic flows steadily. A small truck ahead in the ego lane moves away at a constant pace, effectively setting the ego vehicle's speed. A city bus travels slightly ahead in the adjacent left lane, continuing straight and reducing immediate opportunities to overtake. Farther ahead, another passenger car proceeds in the left lane with no clear interaction. An overhead pedestrian bridge spans the road, and a no-entry sign is visible on the right; no traffic signals appear.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. Following this truck could be risky if it brakes suddenly or obscure hazards ahead, so maintain a safe distance and follow the vehicle ahead."}
{"id": "train_07240", "split": "train", "clip_key": "titan_clip_188_000462_movie", "source": {"subset": "titan", "scenario": "clip_188", "frame": "000462"}, "frames": ["titan_clip_188_000462_movie_t-3.jpg", "titan_clip_188_000462_movie_t-2.jpg", "titan_clip_188_000462_movie_t-1.jpg", "titan_clip_188_000462_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down.", "environment_perception": "A narrow urban two-way street with one lane per direction and no median runs between tall buildings; the pavement shows wet patches and traffic is light. On the right edge near the ego path, a big man wearing a blue shirt and beige pants walks toward the car along the curb and may step into the lane. Just ahead on the same side, another worker at the curb bends while mopping and handling a bucket, remaining close to the roadway. On the left, parked vehicles including a white SUV beside the ego vehicle and a small van ahead occupy the margin and narrow the usable lane. Farther ahead a truck proceeds away in the same direction.", "hazard_reasoning": "There is a big man wearing a blue shirt and beige pants, walking on the right side of the road, toward the ego car. The pedestrian is close to the roadway and may step into the driving lane, so the driver should slow down to maintain a safe distance."}
{"id": "train_07241", "split": "train", "clip_key": "titan_clip_1293_000198_movie", "source": {"subset": "titan", "scenario": "clip_1293", "frame": "000198"}, "frames": ["titan_clip_1293_000198_movie_t-3.jpg", "titan_clip_1293_000198_movie_t-2.jpg", "titan_clip_1293_000198_movie_t-1.jpg", "titan_clip_1293_000198_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian.", "environment_perception": "An urban two-way street with shops and trees appears, the ego-vehicle proceeding in the left lane on smooth, narrow pavement and overall light traffic. A pedestrian in white pants carrying a handbag and an umbrella walks from the left sidewalk across the ego lane toward the right, passing ahead and directly intersecting the vehicle's path. A white van stands stationary at the right curb in the oncoming lane a short distance ahead, narrowing the roadway near the crossing. Farther ahead in the same direction, another small white van moves slowly up the street, modestly setting the pace. No traffic signals or posted speeds are clearly visible.", "hazard_reasoning": "There is a pedestrian wearing white pants, carrying a handbag and an umbrella, and crossing the street from the left side to the right side of the road. The pedestrian may enter the vehicle's path unexpectedly, so the driver should yield to avoid collision."}
{"id": "train_07242", "split": "train", "clip_key": "titan_clip_403_000414_movie", "source": {"subset": "titan", "scenario": "clip_403", "frame": "000414"}, "frames": ["titan_clip_403_000414_movie_t-3.jpg", "titan_clip_403_000414_movie_t-2.jpg", "titan_clip_403_000414_movie_t-1.jpg", "titan_clip_403_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian", "environment_perception": "A narrow urban street with interlocking brick pavement runs straight between dense shopfronts, with no lane markings or median and light traffic. The surface is clean and the ego vehicle proceeds slowly with clear space ahead. On the left very close to the camera, a pedestrian wearing a striped shirt walks toward the ego vehicle along the curb, edging toward the roadway and potentially entering the vehicle's path. Storefront signs, cones, and planters line both sides and slightly narrow the usable roadway, and a parking entrance is visible on the right.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, walking on the right side of the road, towards the ego car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should be aware to avoid a collision."}
{"id": "train_07243", "split": "train", "clip_key": "2020-0129-144857_043524_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "043524"}, "frames": ["2020-0129-144857_043524_movie_t-3.jpg", "2020-0129-144857_043524_movie_t-2.jpg", "2020-0129-144857_043524_movie_t-1.jpg", "2020-0129-144857_043524_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down due to congestion ahead", "environment_perception": "An urban multi-lane road under an elevated expressway approaches a crosswalk-controlled intersection; the pavement is dry and traffic is moderate with brief slowing. A white box truck directly ahead in the ego lane slows because of congestion ahead and constrains the ego car's speed. A small white car travels slightly to the right of the ego lane, continuing straight at a steady pace without merging. A pedestrian waits on the left sidewalk at the crosswalk, not entering the roadway. Overhead signs indicate lane directions for through and turning movements.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. This slowdown warns of congestion ahead, so the driver should reduce speed to maintain a safe following distance and avoid a collision."}
{"id": "train_07244", "split": "train", "clip_key": "2020-0205-152530_043879_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "043879"}, "frames": ["2020-0205-152530_043879_movie_t-3.jpg", "2020-0205-152530_043879_movie_t-2.jpg", "2020-0205-152530_043879_movie_t-1.jpg", "2020-0205-152530_043879_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three lanes in the ego direction and opposing lanes on the right shows smooth pavement and moderate, steadily moving traffic, with only painted separation between directions. A small white box truck ahead in the ego lane continues straight and gradually pulls away with the flow, directly setting the ego vehicle's pace. A dark sedan slightly ahead in the adjacent right lane accelerates forward alongside, remaining in its lane without edging toward the ego path. Farther ahead to the left, a gray car in the left lane proceeds toward the intersection at a similar speed, remaining separated. An overhead traffic signal controls the junction ahead, and roadside no-stopping signs are posted on the left.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07245", "split": "train", "clip_key": "2020-0206-101736_082088_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-101736_082088_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-101736_082088_movie_t-3_augB1.jpg", "2020-0206-101736_082088_movie_t-2_augB1.jpg", "2020-0206-101736_082088_movie_t-1_augB1.jpg", "2020-0206-101736_082088_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction runs past shops on the left and a fenced verge on the right; the pavement is smooth and traffic is light to moderate. A white truck ahead in the ego lane is slowing down and holds the ego vehicle's pace as it continues straight. Farther ahead, a larger truck in the same lane proceeds steadily, creating a short queue. Overhead gantries display a 50 speed-limit sign and a no U-turn symbol. No pedestrians, cyclists, or unusual obstacles are visible.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The sudden deceleration of the truck ahead increases the risk of a rear-end collision, so the driver should reduce speed to maintain a safe distance."}
{"id": "train_07246", "split": "train", "clip_key": "titan_clip_201_000240_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_201_000240_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_201_000240_movie_t-3_augB1.jpg", "titan_clip_201_000240_movie_t-2_augB1.jpg", "titan_clip_201_000240_movie_t-1_augB1.jpg", "titan_clip_201_000240_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrian", "environment_perception": "A narrow urban shopping street with a single forward lane and no median runs between storefronts; the pavement is smooth and traffic is very light with only a stopped vehicle ahead. A man on the right carrying a handbag steps off the curb and crosses toward the left where there is no marked crosswalk, moving across the ego lane. Farther ahead, a small white delivery truck stands near the left edge, narrowing the passage and potentially constraining the path. On the left sidewalk, pedestrians walk in the same direction near the curb but remain off the roadway.", "hazard_reasoning": "There is a pedestrian carrying a handbag, crossing the street from the right side of the road to the left side, because there is no crosswalk. The pedestrian is crossing unexpectedly without a crosswalk and may step into the vehicle's path, so the driver should yield to prevent a collision."}
{"id": "train_07247", "split": "train", "clip_key": "2020-0205-152530_041470_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "041470"}, "frames": ["2020-0205-152530_041470_movie_t-3.jpg", "2020-0205-152530_041470_movie_t-2.jpg", "2020-0205-152530_041470_movie_t-1.jpg", "2020-0205-152530_041470_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the SUV cutting in", "environment_perception": "An urban three-lane arterial with smooth pavement runs between tall buildings, with a bollard-lined divider separating a slower curbside lane on the right; traffic is moderate and generally steady. On the left, a black SUV moves laterally into the ego lane ahead, cutting in from the adjacent lane and briefly constraining the ego vehicle's pace. Directly ahead in the ego lane, a silver microvan continues straight and then eases off slightly as space closes. In the separated right lane, a queue of cars crawls forward behind the barrier and remains outside the ego path.", "hazard_reasoning": "There is a black SUV cutting into the ego lane from the left lane. The SUV's maneuver could reduce your available space and lead to a collision, so the driver should be aware and adjust accordingly."}
{"id": "train_07248", "split": "train", "clip_key": "2020-0203-114632_048224_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "048224"}, "frames": ["2020-0203-114632_048224_movie_t-3.jpg", "2020-0203-114632_048224_movie_t-2.jpg", "2020-0203-114632_048224_movie_t-1.jpg", "2020-0203-114632_048224_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban intersection under an elevated structure comes into view, leading onto a two-lane road without a median; the pavement is smooth and traffic is light. A gray van ahead in the ego lane accelerates away as the road ahead is clear, increasing its distance. To the left, two cyclists near the crosswalk are relevant: one rides across ahead from left to right, while the other waits by the curb and may enter the lane. On the right, a white truck is stopped on the side street by the crosswalk, yielding before turning into the main road. Overhead traffic signals mark the junction.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07249", "split": "train", "clip_key": "2020-0206-101736_086292_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "086292"}, "frames": ["2020-0206-101736_086292_movie_t-3.jpg", "2020-0206-101736_086292_movie_t-2.jpg", "2020-0206-101736_086292_movie_t-1.jpg", "2020-0206-101736_086292_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with two lanes in the ego direction runs beside a raised hedge median; the asphalt is dry and in fair condition, and traffic is heavy with stop-and-go motion. A white flatbed truck directly ahead in the ego lane is stopped because congestion queues in front of it, blocking the ego vehicle's path. In the adjacent left lane, a silver hatchback just ahead creeps forward with the queue and could slip past the truck. Farther ahead in that lane, another white car also moves slowly. Across the median to the right, oncoming vehicles travel separately.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion ahead. You should stop to avoid colliding with the halted truck due to the congestion."}
{"id": "train_07250", "split": "train", "clip_key": "titan_clip_4_000234_movie", "source": {"subset": "titan", "scenario": "clip_4", "frame": "000234"}, "frames": ["titan_clip_4_000234_movie_t-3.jpg", "titan_clip_4_000234_movie_t-2.jpg", "titan_clip_4_000234_movie_t-1.jpg", "titan_clip_4_000234_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban commercial street with brick pavement and no median carries light motor traffic amid many pedestrians, and speeds remain low. A cyclist ahead in the center of the lane rides away from the camera at a steady pace, occupying the path and setting the ego vehicle's speed. At the left curb, a pedestrian in a blue shirt waits to cross toward the right and may enter the lane in front of the ego vehicle. On the right edge by a garage entrance, another pedestrian walks toward the camera close to the travel lane, reducing lateral clearance.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and waiting to cross the road, from the left side, to the right side. The pedestrian may enter the lane unexpectedly, so the driver should remain alert to avoid collision."}
{"id": "train_07251", "split": "train", "clip_key": "titan_clip_1175_000246_movie", "source": {"subset": "titan", "scenario": "clip_1175", "frame": "000246"}, "frames": ["titan_clip_1175_000246_movie_t-3.jpg", "titan_clip_1175_000246_movie_t-2.jpg", "titan_clip_1175_000246_movie_t-1.jpg", "titan_clip_1175_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian", "environment_perception": "An urban back street with a single narrow lane curves gently left, lined by construction fencing and orange cones on both sides; the worn pavement and work zone make the corridor tight, and motor traffic is light. A man in a white shirt and dark pants walks in the middle of the lane toward the camera, reportedly talking on a phone, moving directly along the ego vehicle's path and limiting progress. Two other pedestrians ahead keep to the left edge by the cones, walking away in the same direction and remaining outside the lane center. A white truck is stopped at the curb on the right with its mirror and body close to the lane, further squeezing the available space.", "hazard_reasoning": "There is a person on phone, wearing a white shirt with black pant, walking in the middle of the road, walking toward the ego car. The pedestrian's distraction and central position in the lane create a risk of collision unless the driver slows down to allow them to pass safely."}
{"id": "train_07252", "split": "train", "clip_key": "titan_clip_37_000324_movie", "source": {"subset": "titan", "scenario": "clip_37", "frame": "000324"}, "frames": ["titan_clip_37_000324_movie_t-3.jpg", "titan_clip_37_000324_movie_t-2.jpg", "titan_clip_37_000324_movie_t-1.jpg", "titan_clip_37_000324_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrian", "environment_perception": "A dense urban shopping street with a single narrow undivided lane and brick-pattern pavement, where vehicle flow is light but slow amid many pedestrians. A small white van ahead in the ego lane moves slowly near the center, constraining the ego vehicle's pace. A pedestrian in a white shirt carrying a handbag crosses mid-block from the left to the right in the middle of the road ahead, passing before the van and potentially entering the ego lane. Several other pedestrians walk along both sides and occasionally step close to the roadway edge, keeping the available lane space tight.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and crossing the street in the middle of the road from the left side to the right side. The driver should yield to this pedestrian to avoid a collision as they are entering the vehicle's path at the intersection."}
{"id": "train_07253", "split": "train", "clip_key": "titan_clip_490_000546_movie", "source": {"subset": "titan", "scenario": "clip_490", "frame": "000546"}, "frames": ["titan_clip_490_000546_movie_t-3.jpg", "titan_clip_490_000546_movie_t-2.jpg", "titan_clip_490_000546_movie_t-1.jpg", "titan_clip_490_000546_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "be aware of pedestrian crossing", "environment_perception": "An urban two-way street with one lane each direction and a solid yellow centerline runs between mid-rise buildings; the pavement is smooth, with light same-direction traffic and moderate oncoming flow. Ahead on the left edge of the ego lane, a white utility truck is stopped with orange cones, partly blocking the lane and narrowing the path. On the left sidewalk beside the truck, a pedestrian wearing a blue shirt waits to cross and may enter the ego lane. In the opposite lane, a green taxi and several cars approach steadily, continuing straight. On the right sidewalk, another pedestrian walks past shops while staying off the roadway.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, waiting to cross the street, on the left side of the road. The pedestrian may step onto the roadway unexpectedly, so the driver should be aware before reaching this area."}
{"id": "train_07254", "split": "train", "clip_key": "2020-0213-143552_061555_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "061555"}, "frames": ["2020-0213-143552_061555_movie_t-3.jpg", "2020-0213-143552_061555_movie_t-2.jpg", "2020-0213-143552_061555_movie_t-1.jpg", "2020-0213-143552_061555_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with a single through lane in the ego direction runs beside a narrow raised island on the right; the pavement is dry and smooth and traffic is light. The scene remains steady through the clip. Directly ahead, a large white box truck in the ego lane accelerates away from the ego car, opening the gap and momentarily setting the pace. To its left, a dark van near the curb creeps forward alongside in the adjacent space, narrowing lateral clearance to the ego vehicle while continuing straight. No salient signals or signs are visible, and no pedestrians or cyclists appear.", "hazard_reasoning": "There is a white truck accelerating in the ego lane, away from the ego car. Since the path ahead is clear and the truck is pulling away, the driver should start moving to maintain position and traffic flow."}
{"id": "train_07255", "split": "train", "clip_key": "2020-0217-144444_014322_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "014322"}, "frames": ["2020-0217-144444_014322_movie_t-3.jpg", "2020-0217-144444_014322_movie_t-2.jpg", "2020-0217-144444_014322_movie_t-1.jpg", "2020-0217-144444_014322_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single lane in the ego direction runs between a wall on the left and a planted curb on the right, the pavement is smooth and traffic is slow. A black hatchback directly ahead in the ego lane slows to a crawl because of congestion further ahead, so our vehicle follows at its pace. Ahead toward the left edge, a white box truck moving in the same direction also slows in the queue, narrowing the usable lane. Pedestrians are on both sidewalks, including one standing close to the curb on the left and several on the right by the shops, but they remain on the footway and do not enter the roadway.", "hazard_reasoning": "There is a black hatchback slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to adjust speed and maintain a safe following distance under these conditions."}
{"id": "train_07256", "split": "train", "clip_key": "titan_clip_317_000612_movie", "source": {"subset": "titan", "scenario": "clip_317", "frame": "000612"}, "frames": ["titan_clip_317_000612_movie_t-3.jpg", "titan_clip_317_000612_movie_t-2.jpg", "titan_clip_317_000612_movie_t-1.jpg", "titan_clip_317_000612_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban shopping street with no center divider and a single narrow lane in the ego direction runs between low-rise buildings; pavement is dry and traffic flow is light but slow near a crosswalk. A black van is parked in the ego lane along the left side because a person is boarding it, partially blocking the lane and constraining the ego vehicle's path. Farther ahead, a small car in the same direction moves slowly past the obstruction, showing limited space. Several pedestrians on the right sidewalk near the crosswalk walk close to the curb, potentially entering the roadway. A circular speed-limit sign shows 20.", "hazard_reasoning": "There is a black van parked in the ego lane, on the left side of the road, because someone is boarding it. The vehicle may obstruct the lane and a boarding passenger could step into the roadway unexpectedly, so the driver should slow down to avoid collision."}
{"id": "train_07257", "split": "train", "clip_key": "titan_clip_309_000342_movie", "source": {"subset": "titan", "scenario": "clip_309", "frame": "000342"}, "frames": ["titan_clip_309_000342_movie_t-3.jpg", "titan_clip_309_000342_movie_t-2.jpg", "titan_clip_309_000342_movie_t-1.jpg", "titan_clip_309_000342_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with shops lines both sides, and the ego vehicle proceeds along a single narrow lane with no median; the pavement looks smooth and traffic is light. A small car ahead in the same direction slows near the center of the lane, briefly constraining the ego vehicle's pace. A man in a gray T-shirt and brown shorts pushes a cart in the middle of the road toward the ego car, moving around a parked vehicle and encroaching on the lane. Another pedestrian waits at the right curb by storefronts. Numerous parked cars and signboards further narrow the roadway.", "hazard_reasoning": "There is a man wearing a gray t-shirt and brown shorts and pushing a cart in the middle of the road, toward the ego car, because of the parked vehicle. The driver should slow down to safely navigate around the pedestrian pushing the cart and avoid a collision."}
{"id": "train_07258", "split": "train", "clip_key": "2020-0207-101955_015790_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "015790"}, "frames": ["2020-0207-101955_015790_movie_t-3.jpg", "2020-0207-101955_015790_movie_t-2.jpg", "2020-0207-101955_015790_movie_t-1.jpg", "2020-0207-101955_015790_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe following distance.", "environment_perception": "An urban multilane arterial with smooth pavement carries slow, congested same-direction traffic, with painted yellow lane lines and a red-marked side lane protected by railings. Ahead in the ego lane, a blue hatchback slows because of traffic congestion ahead, directly setting the ego car's pace. In the adjacent right lane, a small white flatbed truck travels alongside and also brakes with the queue, limiting opportunities to change lanes. On the far left, a cyclist proceeds forward in the separated red lane behind a guardrail and remains outside the traffic stream.", "hazard_reasoning": "There is a blue hatchback slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a collision in congested traffic."}
{"id": "train_07259", "split": "train", "clip_key": "titan_clip_1282_000318_movie", "source": {"subset": "titan", "scenario": "clip_1282", "frame": "000318"}, "frames": ["titan_clip_1282_000318_movie_t-3.jpg", "titan_clip_1282_000318_movie_t-2.jpg", "titan_clip_1282_000318_movie_t-1.jpg", "titan_clip_1282_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians on the road", "environment_perception": "An urban commercial street runs under a rail viaduct, forming a narrow two-way road with a faint dashed centerline; the pavement is slightly worn and there is no vehicular traffic, so flow is very light. There is no sidewalk, so two pedestrians wearing white shirts and black pants walk together along the left edge in the ego lane, proceeding ahead and occupying part of the lane, which constrains the vehicle's path. Farther ahead near the center-right, a man and a child walk away along the roadway and drift toward the center, remaining in the expected path. Signboards and storefront displays line both sides and encroach on the margins, further narrowing the usable lane, and no moving vehicles appear in either direction.", "hazard_reasoning": "There are two pedestrians walking together, both wearing black pants and white shirts, on the left side of the road in the ego lane, because there is no sidewalk. The driver should be aware of their presence on the roadway to avoid a potential collision."}
{"id": "train_07260", "split": "train", "clip_key": "titan_clip_21_000264_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_21_000264_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_21_000264_movie_t-3_augB1.jpg", "titan_clip_21_000264_movie_t-2_augB1.jpg", "titan_clip_21_000264_movie_t-1_augB1.jpg", "titan_clip_21_000264_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of the pedestrian crossing", "environment_perception": "An urban two-way street with one narrow lane each way runs between midrise buildings, the asphalt smooth and dry, and overall traffic light but slowed by curbside stops. The ego vehicle proceeds in the left lane with no median. Ahead, a pedestrian wearing a black shirt and pants crosses from right to left directly in front of the car, entering the ego path. Along the left curb, a silver van is parked and narrows the lane. On the right side, a large box truck stands at the curb with its rear open, leaving a tight passage. Farther ahead, several vans continue straight in the same direction.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and pants, crossing the street from the right side to the left side, in front of the ego car. The pedestrian is entering the vehicle's path, so the driver should be cautious and prepare to slow down."}
{"id": "train_07261", "split": "train", "clip_key": "titan_clip_738_000426_movie", "source": {"subset": "titan", "scenario": "clip_738", "frame": "000426"}, "frames": ["titan_clip_738_000426_movie_t-3.jpg", "titan_clip_738_000426_movie_t-2.jpg", "titan_clip_738_000426_movie_t-1.jpg", "titan_clip_738_000426_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians on roadway", "environment_perception": "An urban commercial street with narrow two-way traffic and no centerline stretches ahead; the pavement is dry and slightly worn, and traffic flow is light with slow movement. A white sedan ahead in the same direction proceeds cautiously near the center, setting the pace for the ego car. On the left edge near the camera, a pedestrian carrying a backpack and wearing black pants walks away along the roadside, staying close to the curb. On the right foreground, a man steps off the sidewalk and walks leftward across the lane, potentially entering the ego path. Farther ahead on the right side, a cyclist travels toward the camera along the curb as oncoming traffic, passing the shopfronts.", "hazard_reasoning": "There is a pedestrian carrying a backpack and wearing black pants, walking on the left side of the road, away from the ego car. The pedestrian walking along the left side could enter the driving lane unexpectedly, so the driver should be aware and adjust speed accordingly."}
{"id": "train_07262", "split": "train", "clip_key": "titan_clip_1188_000108_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1188_000108_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1188_000108_movie_t-3_augB1.jpg", "titan_clip_1188_000108_movie_t-2_augB1.jpg", "titan_clip_1188_000108_movie_t-1_augB1.jpg", "titan_clip_1188_000108_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban back street with a single narrow lane is paved with stone blocks, has no median, and carries light, slow traffic between tightly spaced buildings. A silver car ahead along the left curb is stopped, partly obstructing the lane and limiting the available width. A pedestrian in a blue shirt and beige pants carrying a shoulder bag crosses from right to left in front, briefly taking the lane and forcing a pause. Another pedestrian farther ahead walks away along the middle of the roadway, staying in the vehicle's path and constraining speed. A red cone and tight clearances at the right edge further narrow the passage.", "hazard_reasoning": "There is a pedestrian in a blue shirt and beige pants, carrying a shoulder bag, and crossing the street from right to left, in front of the ego-car. The driver should slow down to allow the pedestrian to clear the lane safely."}
{"id": "train_07263", "split": "train", "clip_key": "titan_clip_32_000456_movie", "source": {"subset": "titan", "scenario": "clip_32", "frame": "000456"}, "frames": ["titan_clip_32_000456_movie_t-3.jpg", "titan_clip_32_000456_movie_t-2.jpg", "titan_clip_32_000456_movie_t-1.jpg", "titan_clip_32_000456_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian approaching left lane", "environment_perception": "A narrow urban commercial street with brick pavers and edge lines, no center divider, and light traffic stretches ahead as the ego vehicle proceeds; no oncoming or same-direction vehicles are moving. On the left edge near the camera, a woman wearing a green shirt and carrying a red purse walks toward the ego car along the roadside, approaching its path. Farther ahead, several pedestrians cluster outside shops on the left and a couple step out to cross toward the right, influencing the ego vehicle's pace. Also on the left foreground, a worker pushes a hand truck along the curb in the same direction, remaining close to the edge. A 30 speed sign and a no-parking sign stand on the left. A box truck is stopped in a recessed bay on the right beside cones.", "hazard_reasoning": "There is a woman wearing a green shirt, carrying a red purse, walking on the left side of the road, towards the ego car. The driver should be aware because the pedestrian could unexpectedly step into the lane ahead."}
{"id": "train_07264", "split": "train", "clip_key": "2020-0129-105040_007728_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "007728"}, "frames": ["2020-0129-105040_007728_movie_t-3.jpg", "2020-0129-105040_007728_movie_t-2.jpg", "2020-0129-105040_007728_movie_t-1.jpg", "2020-0129-105040_007728_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two same-direction lanes runs between tall office buildings, separated from oncoming lanes by a low hedge median; the wet asphalt is in good condition and traffic flows moderately. Ahead in the ego lane, a silver van accelerates and pulls away because the lane ahead is open, creating a growing gap to the ego car. In the adjacent right lane ahead, a white box truck proceeds at a steady pace, keeping its lane and not affecting the ego vehicle's path. At the left curb by a bus shelter, a person waits behind the railing, remaining clear of the roadway.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car, because the road ahead is clear. Orange traffic cones on the left sidewalk indicate possible construction; follow the vehicle ahead to navigate the area safely."}
{"id": "train_07265", "split": "train", "clip_key": "titan_clip_402_000438_movie", "source": {"subset": "titan", "scenario": "clip_402", "frame": "000438"}, "frames": ["titan_clip_402_000438_movie_t-3.jpg", "titan_clip_402_000438_movie_t-2.jpg", "titan_clip_402_000438_movie_t-1.jpg", "titan_clip_402_000438_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian approaching on left", "environment_perception": "An urban commercial street with a single narrow two-way lane paved with interlocking bricks, no median, and light to moderate traffic. The surface is smooth but the path is narrowed by parked vehicles on both sides, especially a white truck with a yellow tarp at the right curb. A small dark truck ahead in the ego lane moves slowly away, constraining the car's pace on the tight roadway. An oncoming white van approaches in the opposite lane near the center, reducing clearance as it passes. A pedestrian wearing a white shirt and white pants walks toward the ego vehicle along the left side, close to the roadway and may step into the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and white pants, and walking toward the ego car on the left side of the road. The driver should be aware of this pedestrian to anticipate a potential crossing and avoid collision."}
{"id": "train_07266", "split": "train", "clip_key": "2020-0210-101957_002621_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "002621"}, "frames": ["2020-0210-101957_002621_movie_t-3.jpg", "2020-0210-101957_002621_movie_t-2.jpg", "2020-0210-101957_002621_movie_t-1.jpg", "2020-0210-101957_002621_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked pickup", "environment_perception": "An urban multi-lane two-way street with no physical median and smooth pavement shows moderate, steady traffic. A white pickup truck is parked ahead in the ego lane along the left side while being unloaded, narrowing the lane and likely requiring a merge to the right. A small flatbed truck continues away in the same direction farther ahead, modestly setting the pace. In the opposite lanes, a white delivery van and other vehicles approach steadily, occupying oncoming space as they pass the center area. A bus stop marking lies in the left lane near the stopped truck.", "hazard_reasoning": "There is a white pickup truck parked in the ego lane, on the left side of the road, because it is being unloaded. This parked pickup obstructs the travel lane, so the driver should carefully manoeuvre around it to avoid collision and maintain safe progress."}
{"id": "train_07267", "split": "train", "clip_key": "2020-0225-102455_023525_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_023525_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_023525_movie_t-3_augB1.jpg", "2020-0225-102455_023525_movie_t-2_augB1.jpg", "2020-0225-102455_023525_movie_t-1_augB1.jpg", "2020-0225-102455_023525_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist", "environment_perception": "An urban multi-lane arterial with two lanes in each direction runs between tall buildings, the directions divided by a low rail median. Pavement is dry and smooth, and same-direction traffic is moderate and slow-moving while oncoming lanes are steady. Ahead in the ego lane, a silver car rolls at low speed and sets the pace. At the left curb just ahead, a white van is stopped with its rear doors open as a person handles cargo, blocking part of the curb lane. Near this van, a cyclist in a purple coat rides out from the left lane toward the ego lane to avoid a parked hatchback, moving into the ego path. Farther right, a queue of vehicles in the opposite direction continues past without interaction.", "hazard_reasoning": "There is a cyclist wearing a purple coat, cycling, and changing lanes from the left lane to the ego lane, because they are avoiding a parked hatchback. The cyclist's lane change may bring them into the vehicle's path unexpectedly, so the driver should yield to avoid collision."}
{"id": "train_07268", "split": "train", "clip_key": "titan_clip_1075_000534_movie", "source": {"subset": "titan", "scenario": "clip_1075", "frame": "000534"}, "frames": ["titan_clip_1075_000534_movie_t-3.jpg", "titan_clip_1075_000534_movie_t-2.jpg", "titan_clip_1075_000534_movie_t-1.jpg", "titan_clip_1075_000534_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of approaching pedestrian", "environment_perception": "A quiet urban residential two-way street climbs gently uphill with no median and smooth pavement, and traffic is light with no vehicles immediately ahead. On the left side near the curb, a pedestrian in a white shirt and blue pants carrying a backpack walks toward the ego vehicle, close to the carriageway and may step into the lane. Just ahead of him, another pedestrian keeps to the same left curb, moving slowly along the sidewalk and posing a minor distraction. Very close in the right foreground, a bicyclist appears at the edge of the frame alongside the ego car near the curb, momentarily encroaching toward the lane. A building on the right is wrapped for construction, narrowing the roadside.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, blue pants, and carrying a backpack, walking toward the ego car, on the left side of the road. The pedestrian may step into the roadway unexpectedly, so the driver should be cautious to avoid a potential collision."}
{"id": "train_07269", "split": "train", "clip_key": "2020-0206-101736_031688_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "031688"}, "frames": ["2020-0206-101736_031688_movie_t-3.jpg", "2020-0206-101736_031688_movie_t-2.jpg", "2020-0206-101736_031688_movie_t-1.jpg", "2020-0206-101736_031688_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction and a painted hatched median runs straight under a pedestrian footbridge; the pavement is dry and smooth, and traffic is moderate with a slow-moving queue ahead. A white sedan directly ahead in the ego lane slows in the queue, constraining the ego car's pace because of congestion. To its left, a white SUV in the adjacent same-direction lane continues steadily a little faster, remaining parallel without signaling to merge. On the right beyond the hatched median, a white compact car approaches in the opposite lane and passes without interaction.", "hazard_reasoning": "A white sedan is slowing in front of the ego car in the ego lane, because of traffic congestion. Because the vehicle ahead is decelerating due to congestion, you must reduce speed to keep a safe following distance and avoid a collision."}
{"id": "train_07270", "split": "train", "clip_key": "titan_clip_1077_000294_movie", "source": {"subset": "titan", "scenario": "clip_1077", "frame": "000294"}, "frames": ["titan_clip_1077_000294_movie_t-3.jpg", "titan_clip_1077_000294_movie_t-2.jpg", "titan_clip_1077_000294_movie_t-1.jpg", "titan_clip_1077_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way road without a centerline climbs slightly uphill between buildings, with fresh-looking pavement and a line of construction cones along the left; traffic is light with no moving vehicles. Ahead on the left edge, a man in a gray T-shirt and black pants walks away from the ego vehicle along the roadway as the sidewalk is congested, so he may enter the ego path. Two more pedestrians ahead near the center and right walk in the same direction, occupying the lane and constraining the ego car's pace. Cones and construction materials narrow the left margin, while a parked bicycle and a shop signboard on the right pinch the passage.", "hazard_reasoning": "There is a man, wearing a gray t-shirt and black pants, walking on the left side of the road, away from the ego car, because the sidewalk is congested. The driver should slow down because the pedestrian may step onto the road unexpectedly due to the crowded sidewalk."}
{"id": "train_07271", "split": "train", "clip_key": "2020-0225-102455_070332_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "070332"}, "frames": ["2020-0225-102455_070332_movie_t-3.jpg", "2020-0225-102455_070332_movie_t-2.jpg", "2020-0225-102455_070332_movie_t-1.jpg", "2020-0225-102455_070332_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial with a planted median and smooth pavement carries heavy, slow-moving traffic. A white minivan directly ahead in the ego lane slows and creeps because congestion builds in front, constraining the ego vehicle's pace. To the right, a dark van in the adjacent lane also brakes and advances in parallel with the queue. Ahead left, a small car in the left lane proceeds slowly with the pack a short distance beyond the minivan. An overhead blue direction sign on a footbridge indicates Route 15 straight toward Yokohama 25 km, Kawasaki 12 km, and Shinagawa 1 km.", "hazard_reasoning": "There is a white minivan slowing down in the ego lane, because of traffic congestion ahead. The white minivan is decelerating due to congestion ahead, so you need to slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_07272", "split": "train", "clip_key": "2020-0131-135401_003641_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003641"}, "frames": ["2020-0131-135401_003641_movie_t-3.jpg", "2020-0131-135401_003641_movie_t-2.jpg", "2020-0131-135401_003641_movie_t-1.jpg", "2020-0131-135401_003641_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction runs between apartment buildings, the pavement dry and smooth, and overall traffic light. A raised curb lines a side strip on the left and a metal railing borders the right with bright sun glare from the right. A white box truck directly ahead in the ego lane stands stopped and blocks the path, constraining the ego vehicle's progress. On the left sidewalk ahead, a person pushing a stroller walks parallel to traffic past the front of the truck without entering the lane. No oncoming vehicles are visible beyond the obstruction. An overhead sign shows a 40 speed limit.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The driver should stop because the truck blocks the lane and poses a collision risk."}
{"id": "train_07273", "split": "train", "clip_key": "2020-0131-135401_005097_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "005097"}, "frames": ["2020-0131-135401_005097_movie_t-3.jpg", "2020-0131-135401_005097_movie_t-2.jpg", "2020-0131-135401_005097_movie_t-1.jpg", "2020-0131-135401_005097_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single narrow lane per direction and smooth pavement runs between buildings, with a curb barrier on the right; traffic is slow and briefly stops. A white box truck directly ahead in the ego lane is stopped, queuing because of congestion ahead and blocking the ego vehicle's path. Several pedestrians on the left sidewalk farther ahead walk along the street near a curb extension, staying on the sidewalk and not affecting the lane. No oncoming vehicles are visible past the truck. An overhead circular sign shows 40. Bright sun from the right produces glare and long shadows across the roadway.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop to maintain safe following distance and avoid collision."}
{"id": "train_07274", "split": "train", "clip_key": "2020-0220-102630_056253_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "056253"}, "frames": ["2020-0220-102630_056253_movie_t-3.jpg", "2020-0220-102630_056253_movie_t-2.jpg", "2020-0220-102630_056253_movie_t-1.jpg", "2020-0220-102630_056253_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "The scene is an urban arterial with three lanes in the ego direction and smooth pavement, carrying light to moderate traffic. Opposing traffic is not visible as a pedestrian footbridge spans the roadway and buildings line both sides. A yellow van travels ahead in the ego lane, moving away and setting the ego vehicle's pace. A white van runs slightly ahead in the right adjacent lane at a similar speed, limiting any rightward lane change. Farther ahead, several cars continue in all lanes with regular gaps, maintaining steady flow.", "hazard_reasoning": "There is a yellow van driving in the ego lane away from the ego car. The yellow van ahead could brake suddenly, so maintain a safe following distance and be prepared to react."}
{"id": "train_07275", "split": "train", "clip_key": "2020-0129-105040_040524_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "040524"}, "frames": ["2020-0129-105040_040524_movie_t-3.jpg", "2020-0129-105040_040524_movie_t-2.jpg", "2020-0129-105040_040524_movie_t-1.jpg", "2020-0129-105040_040524_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial under an elevated expressway has three lanes in the same direction with a right-side guardrail; the dry pavement is smooth and traffic flows lightly to moderately. A white dump truck ahead in the ego lane pulls away as traffic ahead moves, gradually increasing the gap and setting the pace. In the left lane, a small covered pickup travels straight and edges ahead of the ego vehicle. In the far-right curb lane, a larger truck proceeds straight alongside the fence without encroaching. Blue overhead direction signs span the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07276", "split": "train", "clip_key": "2020-0226-140503_076255_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "076255"}, "frames": ["2020-0226-140503_076255_movie_t-3.jpg", "2020-0226-140503_076255_movie_t-2.jpg", "2020-0226-140503_076255_movie_t-1.jpg", "2020-0226-140503_076255_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane signalized intersection with broad zebra crossings and smooth asphalt stretches ahead; traffic is moderate, and the ego-vehicle waits at the stop line with a red light visible for this approach. A black SUV enters from the left and crosses rightward through the junction ahead, occupying the cross flow and keeping the ego car stationary. Far ahead beyond the intersection, multiple vehicles stream along the road, while several trucks and cars queue along the right curb and move slowly. A small box truck stands at the left corner near pedestrians on the sidewalk. No obstacles or work zones impede the lane.", "hazard_reasoning": "There is a black SUV crossing from left to right in the intersection in front of the ego-car, because it has the right-away. The driver must stop to avoid collision with the crossing vehicle."}
{"id": "train_07277", "split": "train", "clip_key": "2020-0226-140503_072492_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "072492"}, "frames": ["2020-0226-140503_072492_movie_t-3.jpg", "2020-0226-140503_072492_movie_t-2.jpg", "2020-0226-140503_072492_movie_t-1.jpg", "2020-0226-140503_072492_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the blue hatchback.", "environment_perception": "An urban multi-lane road approaches a signalized intersection, the asphalt slightly damp, and traffic is moderate with same-direction lanes queuing while cross traffic flows. A hatchback directly ahead in the ego lane is stopped for the red light, holding the ego vehicle at the stop line. A large flatbed truck in the adjacent right same-direction lane waits slightly ahead at the crosswalk, partly blocking the view to the right. Several vehicles, including a white sedan, travel left to right across the intersection on their green and remain clear of the ego lane. The overhead signal facing the ego direction displays red.", "hazard_reasoning": "There is a blue hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The hatchback is stopped at the red light, so the ego-vehicle must stop to avoid collision and comply with the traffic signal."}
{"id": "train_07278", "split": "train", "clip_key": "2020-0207-151349_002796_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "002796"}, "frames": ["2020-0207-151349_002796_movie_t-3.jpg", "2020-0207-151349_002796_movie_t-2.jpg", "2020-0207-151349_002796_movie_t-1.jpg", "2020-0207-151349_002796_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with smooth pavement and a narrow median of railings and posts carries light, steady traffic. On the left-hand carriageway, a gray van drives directly ahead in the ego lane at a steady pace, effectively setting the ego car's speed. Farther ahead in the adjacent right lane, a light-colored van continues straight in the same direction with a clear gap. A pedestrian walks along the left sidewalk behind the fence, remaining clear of the roadway. An overhead blue direction sign spans the street near a pedestrian overpass, while oncoming traffic remains separated beyond the median.", "hazard_reasoning": "There is a gray van driving in front of the ego car in the ego lane. The driver should follow the vehicle ahead to maintain a safe distance and avoid sudden braking."}
{"id": "train_07279", "split": "train", "clip_key": "2020-0220-102630_076904_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "076904"}, "frames": ["2020-0220-102630_076904_movie_t-3.jpg", "2020-0220-102630_076904_movie_t-2.jpg", "2020-0220-102630_076904_movie_t-1.jpg", "2020-0220-102630_076904_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road with smooth asphalt and no visible median runs between midrise buildings, and traffic is moderate and steady. A white minivan ahead in the ego lane accelerates under a green signal, briefly pulling away and guiding the pace. In the adjacent right lane, a dark SUV slightly ahead continues straight at a similar speed, remaining parallel without merging left. At the right edge near the ego vehicle, a silver wagon moves slowly in its lane and does not encroach on the ego path. A green traffic light is visible ahead, and there are no obstacles or pedestrians affecting the roadway.", "hazard_reasoning": "There is a white minivan accelerating in the ego lane, because of the green traffic light. Following the vehicle ahead helps maintain a safe distance and prepares you for sudden signal changes or speed adjustments under this situation."}
{"id": "train_07280", "split": "train", "clip_key": "2020-0206-101736_089236_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "089236"}, "frames": ["2020-0206-101736_089236_movie_t-3.jpg", "2020-0206-101736_089236_movie_t-2.jpg", "2020-0206-101736_089236_movie_t-1.jpg", "2020-0206-101736_089236_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with multiple same-direction lanes runs straight on dry, well-marked pavement, and traffic is heavy near a signalized intersection. A white flatbed truck directly ahead in the ego lane is stopped at a red light, holding the ego vehicle. To the left, a white box truck and a short queue of cars in the adjacent lane are also stopped or creeping, limiting any chance to pass. Beyond the raised hedge median on the right, an oncoming white van proceeds slowly toward the intersection but remains separated from the ego path. The overhead traffic signal ahead shows red.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of the red traffic light. The ego driver should stop to maintain a safe following distance and comply with the red signal."}
{"id": "train_07281", "split": "train", "clip_key": "titan_clip_513_000348_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_513_000348_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_513_000348_movie_t-3_augB1.jpg", "titan_clip_513_000348_movie_t-2_augB1.jpg", "titan_clip_513_000348_movie_t-1_augB1.jpg", "titan_clip_513_000348_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban street with mid-rise buildings narrows to a single lane as the ego vehicle approaches a zebra crossing; the pavement looks smooth and traffic is light with no moving cars. Ahead in the center of the lane, a pedestrian pushes a blue cart and walks toward the ego vehicle, occupying the travel path and constraining its pace. On the left sidewalk near the storefronts, several pedestrians walk in the same direction toward the crosswalk while staying off the roadway. Farther ahead by the right curb, another person stands near parked bicycles and blue cones without entering the lane. The zebra crossing is clearly marked, and no traffic signals are visible.", "hazard_reasoning": "There is a pedestrian walking in the middle of the road, pushing a blue cart, heading toward the ego car. The pedestrian's position and trajectory create a collision risk, so the driver should reduce speed to avoid impact under this situation."}
{"id": "train_07282", "split": "train", "clip_key": "2020-0210-101957_005078_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "005078"}, "frames": ["2020-0210-101957_005078_movie_t-3.jpg", "2020-0210-101957_005078_movie_t-2.jpg", "2020-0210-101957_005078_movie_t-1.jpg", "2020-0210-101957_005078_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "An urban two-way road with one lane each direction curves gently right, divided by a solid center line; the pavement looks smooth and traffic is light. A white van is parked on the left side of the road ahead at the curb, narrowing the ego lane. On the right edge near the camera, a large white box truck stands stopped at the curb and a person is beside its cab, remaining by the roadside. Farther ahead near the curve, a few distant vehicles are visible in the oncoming lane with ample separation. Several pedestrians walk along the sidewalks on both sides, including one near the truck, and none step into the roadway.", "hazard_reasoning": "There is a white van parked on the left side of the road. Parked vehicles on the roadside can narrow driving lanes and obstruct sightlines, so the driver should manoeuvre around it carefully."}
{"id": "train_07283", "split": "train", "clip_key": "titan_clip_458_000564_movie", "source": {"subset": "titan", "scenario": "clip_458", "frame": "000564"}, "frames": ["titan_clip_458_000564_movie_t-3.jpg", "titan_clip_458_000564_movie_t-2.jpg", "titan_clip_458_000564_movie_t-1.jpg", "titan_clip_458_000564_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "manoeuvre carefully around the parked van", "environment_perception": "A narrow urban street with one undivided lane runs between shops and glass-fronted buildings; the pavement is dry and intact, and traffic is light. Ahead, a white van is parked along the left side within the ego lane, obstructing the path and reducing the available width. Just ahead, a man walks slowly in the lane near the left edge toward the van, which could constrain the ego vehicle's pace. Farther ahead on the right sidewalk, pedestrians walk past shops while staying off the roadway.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane. The parked van obstructs the ego lane, so the driver should manoeuvre carefully around it to avoid collision."}
{"id": "train_07284", "split": "train", "clip_key": "titan_clip_627_000396_movie", "source": {"subset": "titan", "scenario": "clip_627", "frame": "000396"}, "frames": ["titan_clip_627_000396_movie_t-3.jpg", "titan_clip_627_000396_movie_t-2.jpg", "titan_clip_627_000396_movie_t-1.jpg", "titan_clip_627_000396_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "An urban commercial side street in Japan appears as a narrow two-way road without a median and with smooth pavement; vehicle traffic is light and no cars are immediately ahead or oncoming. A pair of pedestrians talking cross the middle of the intersection toward the ego vehicle, entering the ego lane and dictating a slow approach. On the right edge of the lane, a man with a backpack walks toward the camera along the roadway, which may bring him into the path. On the left near the curb, a woman with an umbrella steps along the roadway toward the center. Orange barricades ahead on the right mark a small work area.", "hazard_reasoning": "There are two pedestrians talking in a group, crossing the street in the middle of the intersection, moving toward the ego car. The driver should yield to avoid colliding with them at the intersection."}
{"id": "train_07285", "split": "train", "clip_key": "titan_clip_334_000030_movie", "source": {"subset": "titan", "scenario": "clip_334", "frame": "000030"}, "frames": ["titan_clip_334_000030_movie_t-3.jpg", "titan_clip_334_000030_movie_t-2.jpg", "titan_clip_334_000030_movie_t-1.jpg", "titan_clip_334_000030_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "be cautious of parked van", "environment_perception": "An urban commercial street with a single narrow lane and raised curbs runs straight between shops; pavement is smooth and traffic is light with no opposing flow visible. A white van is parked on the left side of the road ahead, narrowing the lane and constraining how the ego-vehicle can pass. A man on the right sidewalk walks along the curb and glances toward the roadway, close enough to be relevant as the car approaches. Another pedestrian stands on the left near a caf and cones but stays on the sidewalk. A blue no-parking sign and several orange cones line the left curb, marking a restricted area.", "hazard_reasoning": "There is a white van parked on the left side of the road. It may narrow the available lane and obstruct visibility of pedestrians entering the road, so the driver should be cautious of the parked van."}
{"id": "train_07286", "split": "train", "clip_key": "2020-0228-150133_015467_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "015467"}, "frames": ["2020-0228-150133_015467_movie_t-3.jpg", "2020-0228-150133_015467_movie_t-2.jpg", "2020-0228-150133_015467_movie_t-1.jpg", "2020-0228-150133_015467_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban street with a narrow single lane and no median is bordered by apartments and a guarded sidewalk; the pavement is dry and traffic is light. A silver van is stopped directly ahead in the ego lane, blocking progress near a zebra crossing. Along the left curb, a large box truck stands beside the van, narrowing the passage and acting as an obstacle. No other vehicles or pedestrians move nearby, and no oncoming traffic is visible.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane. Driver should stop to avoid colliding with the halted vehicle under constrained sightlines."}
{"id": "train_07287", "split": "train", "clip_key": "titan_clip_525_000468_movie", "source": {"subset": "titan", "scenario": "clip_525", "frame": "000468"}, "frames": ["titan_clip_525_000468_movie_t-3.jpg", "titan_clip_525_000468_movie_t-2.jpg", "titan_clip_525_000468_movie_t-1.jpg", "titan_clip_525_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with curbs and small sidewalks appears clean and smooth, and traffic is light with no oncoming vehicles. A scooter ahead in the same lane rides away toward the junction at the end of the block. Two pedestrians with parasols on the right step out and begin crossing toward the left ahead, potentially entering the ego lane. A pedestrian carrying an umbrella and a handbag walks toward the ego vehicle along the right edge of the roadway because another pedestrian is on the sidewalk, bringing her close to the travel path.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and a handbag, and walking on the right side of the road, towards the ego car, because of another pedestrian on the sidewalk. The driver should carefully manoeuvre around this pedestrian to avoid a potential collision as they cross into the vehicle's path."}
{"id": "train_07288", "split": "train", "clip_key": "2020-0129-105040_070432_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "070432"}, "frames": ["2020-0129-105040_070432_movie_t-3.jpg", "2020-0129-105040_070432_movie_t-2.jpg", "2020-0129-105040_070432_movie_t-1.jpg", "2020-0129-105040_070432_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban residential two-way street with one narrow lane each way has a single yellow centerline and white guardrails along both edges; the pavement is dry and traffic is light. A small white van ahead in the ego lane proceeds steadily away, loosely setting the pace. A female cyclist in a white coat rides away along the left-side bike lane behind the guardrail, parallel to the ego vehicle and remaining outside the travel lane. Another cyclist on the far right edge in the oncoming lane moves slowly near the curb behind a rail, staying clear of the ego path. No traffic signals or notable signs are visible.", "hazard_reasoning": "There's a female cyclist, wearing a white coat, cycling on the left side of the road, away from the ego car, because there's a bike lane on that side of the road. Slow down to maintain a safe passing distance and prevent a potential collision with the cyclist."}
{"id": "train_07289", "split": "train", "clip_key": "2020-0228-102841_070841_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "070841"}, "frames": ["2020-0228-102841_070841_movie_t-3.jpg", "2020-0228-102841_070841_movie_t-2.jpg", "2020-0228-102841_070841_movie_t-1.jpg", "2020-0228-102841_070841_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the worker carefully", "environment_perception": "An urban two-way street with a single lane each way passes a construction site; the pavement is dry and the work zone narrows the roadway, so overall traffic is light and slow. A concrete mixer truck is stopped ahead on the left edge of the ego lane, occupying part of the lane and constraining the approach. A construction worker in a blue uniform with an orange reflector jacket and a helmet stands just ahead near this truck on the left, directing traffic through the narrowed section. A few pedestrians remain on the distant sidewalks and do not enter the road. Cones, barricades, and a tall temporary wall line the right side, forming a bottleneck, and no traffic signal or posted speed sign is clearly visible.", "hazard_reasoning": "There is a pedestrian in blue uniform and orange reflector jacket, with a helmet, standing on the right side of the road, because they are directing traffic. Because they are actively guiding vehicles near the construction zone and partially obstructing the lane, the driver should carefully manoeuvre to avoid hitting them."}
{"id": "train_07290", "split": "train", "clip_key": "2020-0207-151349_086793_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "086793"}, "frames": ["2020-0207-151349_086793_movie_t-3.jpg", "2020-0207-151349_086793_movie_t-2.jpg", "2020-0207-151349_086793_movie_t-1.jpg", "2020-0207-151349_086793_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene under an elevated expressway shows a one-lane-each-direction road, the ego proceeding in the left lane on smooth pavement with light traffic. No vehicle is ahead, and the oncoming lane to the right remains clear. A pedestrian stands on the left sidewalk by the upcoming zebra crossing, waiting and potentially about to enter the ego path. Several vans are stopped on the right shoulder behind a guardrail, stationary and outside the travel lane. A traffic signal suspended beneath the structure displays a green straight arrow, indicating through movement.", "hazard_reasoning": "No hazards detected, driver can proceed as usual."}
{"id": "train_07291", "split": "train", "clip_key": "titan_clip_452_000246_movie", "source": {"subset": "titan", "scenario": "clip_452", "frame": "000246"}, "frames": ["titan_clip_452_000246_movie_t-3.jpg", "titan_clip_452_000246_movie_t-2.jpg", "titan_clip_452_000246_movie_t-1.jpg", "titan_clip_452_000246_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrians", "environment_perception": "An urban two-way street with shops lines the scene, the pavement is smooth, and traffic is light. The road is narrow with no center line; bollards separate a sidewalk on the left while the right edge lacks a sidewalk. An oncoming white box truck approaches in the opposing lane on the right and passes close, briefly narrowing space for the ego car. Two pedestrians in white shirts and black pants carrying shoulder bags walk along the right edge toward the ego vehicle because there is no sidewalk, and they may step slightly into the travel lane. Additional pedestrians proceed on the left sidewalk near storefronts and do not affect the ego vehicle's path.", "hazard_reasoning": "There are two male pedestrians, wearing white shirts and black pants, and carrying shoulder bags, walking on the right side of the street, towards the ego-car, because there is no sidewalk. They are walking towards the vehicle on the roadway, increasing the collision risk, so the driver should manoeuvre around them carefully."}
{"id": "train_07292", "split": "train", "clip_key": "2020-0205-103411_055384_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "055384"}, "frames": ["2020-0205-103411_055384_movie_t-3.jpg", "2020-0205-103411_055384_movie_t-2.jpg", "2020-0205-103411_055384_movie_t-1.jpg", "2020-0205-103411_055384_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light", "environment_perception": "An urban multilane arterial with three same-direction lanes and a right-side guardrail has smooth pavement, and traffic is queued at an intersection, making flow moderate. A black car directly ahead in the ego lane is stationary because the signal ahead is red, constraining the ego vehicle. To the left, a dark station wagon in the adjacent lane is also stopped slightly ahead, waiting at the same light and remaining alongside the ego car. On the far side of the junction, a truck on the cross street is present but remains outside the ego path. The traffic signal above the intersection shows red.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, because of a red traffic light ahead. The driver needs to stop at the red light to avoid a collision with the halted vehicle and comply with the traffic signal."}
{"id": "train_07293", "split": "train", "clip_key": "2020-0203-114632_048336_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "048336"}, "frames": ["2020-0203-114632_048336_movie_t-3.jpg", "2020-0203-114632_048336_movie_t-2.jpg", "2020-0203-114632_048336_movie_t-1.jpg", "2020-0203-114632_048336_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the silver van's lane change.", "environment_perception": "An urban road runs alongside an elevated structure on the right, with two same-direction lanes, curbs but no median, and smooth asphalt; traffic is light and steady as the road gently curves right. Ahead, a silver van changes lanes from the right lane into the ego lane in front of the camera car and then continues ahead, briefly dictating the pace. Farther ahead in the same direction, a small white car stays in its lane and cruises steadily without affecting the ego vehicle. No salient signals are visible, and there are no pedestrians or obstacles along the fenced right edge.", "hazard_reasoning": "There is a silver van changing lanes in front of the ego car, from the right lane to the ego lane. Since the van may cut in unpredictably into the ego lane, the driver should be aware to maintain a safe buffer."}
{"id": "train_07294", "split": "train", "clip_key": "titan_clip_1053_000336_movie", "source": {"subset": "titan", "scenario": "clip_1053", "frame": "000336"}, "frames": ["titan_clip_1053_000336_movie_t-3.jpg", "titan_clip_1053_000336_movie_t-2.jpg", "titan_clip_1053_000336_movie_t-1.jpg", "titan_clip_1053_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban back street with smooth pavement and no centerline forms a narrow two-way road with light traffic. A dark minivan ahead in the ego lane moves slowly near mid-block, effectively setting the pace. A pedestrian wearing black pants and pushing a trolley is crossing in the middle of the road from left to right ahead, entering the ego lane and drawing the lead vehicle's attention. Parked vehicles and driveway entrances along the right side slightly narrow the usable roadway.", "hazard_reasoning": "A pedestrian wearing black pants and pushing a trolley is crossing in the middle of the road to the right side. The driver should slow down to yield to the pedestrian and avoid a collision."}
{"id": "train_07295", "split": "train", "clip_key": "titan_clip_847_000114_movie", "source": {"subset": "titan", "scenario": "clip_847", "frame": "000114"}, "frames": ["titan_clip_847_000114_movie_t-3.jpg", "titan_clip_847_000114_movie_t-2.jpg", "titan_clip_847_000114_movie_t-1.jpg", "titan_clip_847_000114_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking ahead.", "environment_perception": "An urban backstreet climbs steeply, a narrow two-way road with one lane each direction, no median, smooth but tight pavement, and light traffic. A pedestrian wearing a cap and black shirt walks along the left edge toward the ego car, close to the travel lane and may enter it. Another person stands on the right near a stairway at the curb and remains clear of the lane. A white van is far ahead near the hillcrest in the oncoming direction, moving slowly downhill. Red bollards line the right side and narrow the usable width as the rising crest limits forward visibility.", "hazard_reasoning": "There is a pedestrian wearing a cap and black shirt, walking on the left side of the road, towards the ego car. The pedestrian is moving into the vehicle's path, so the driver should be aware of their presence and be prepared to adjust speed or direction."}
{"id": "train_07296", "split": "train", "clip_key": "titan_clip_331_000018_movie", "source": {"subset": "titan", "scenario": "clip_331", "frame": "000018"}, "frames": ["titan_clip_331_000018_movie_t-3.jpg", "titan_clip_331_000018_movie_t-2.jpg", "titan_clip_331_000018_movie_t-1.jpg", "titan_clip_331_000018_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban shopping street with a narrow single shared lane paved with interlocking bricks, no median, and storefronts tight to the curb; vehicle traffic is absent while pedestrian flow is moderate. On the right edge near the camera, a pedestrian carrying a handbag walks toward the ego car along the curb, close to the travel lane. Ahead in the center of the lane, a pair of pedestrians walk away from the ego vehicle, occupying the path and constraining its pace. On the left side by the restaurant windows, another pedestrian walks toward the ego car near the lane edge, creating a tight corridor.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking on the right side of the road, toward the ego car. The pedestrian is approaching the vehicle's path, so the driver should manoeuvre carefully to avoid a potential collision."}
{"id": "train_07297", "split": "train", "clip_key": "titan_clip_455_000042_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_455_000042_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_455_000042_movie_t-3_augB1.jpg", "titan_clip_455_000042_movie_t-2_augB1.jpg", "titan_clip_455_000042_movie_t-1_augB1.jpg", "titan_clip_455_000042_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist in roadway", "environment_perception": "A narrow urban street with cobblestone pavement and no centerline runs between low-rise buildings, with light, slow traffic and no median. Ahead, a cyclist in a red jacket rides away in the middle of the road, displaced from the left by a parked car and potentially constraining the ego vehicle's pace. Farther ahead slightly left, a small box truck is stopped with its rear toward the ego lane, narrowing the passage and influencing the cyclist's path. On the right, a pedestrian walks along the sidewalk near shopfronts without entering the roadway. A black sedan stands on the left edge partly in the lane, and additional curbside parking and loading further reduce the available width.", "hazard_reasoning": "There is a cyclist wearing a red jacket cycling in the middle of the road away from the ego car because of the parked vehicle on the left. The driver should be aware of the cyclist's position to avoid a potential collision."}
{"id": "train_07298", "split": "train", "clip_key": "titan_clip_290_000090_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_290_000090_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_290_000090_movie_t-3_augB1.jpg", "titan_clip_290_000090_movie_t-2_augB1.jpg", "titan_clip_290_000090_movie_t-1_augB1.jpg", "titan_clip_290_000090_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "'Yield to turning SUV'", "environment_perception": "An urban side street passes beneath an elevated railway, forming a narrow single-lane approach to a small intersection with smooth pavement and light traffic. Visibility is constrained by the overpass and closely packed storefronts. At the left edge of the junction, a white SUV turns left into the ego lane in the middle of the intersection, moving slowly into the path. A pedestrian ahead near the center walks rightward across the mouth of the lane toward the shopfronts. Another person stands at the storefront on the right by the curb without stepping into the roadway. A clearance sign above the underpass indicates 4.0 m.", "hazard_reasoning": "There is a white SUV turning left in the middle of the intersection, to the ego lane. Therefore, the driver should yield to the turning SUV to avoid a collision."}
{"id": "train_07299", "split": "train", "clip_key": "2020-0129-105040_039552_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "039552"}, "frames": ["2020-0129-105040_039552_movie_t-3.jpg", "2020-0129-105040_039552_movie_t-2.jpg", "2020-0129-105040_039552_movie_t-1.jpg", "2020-0129-105040_039552_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban underpass with a single-lane roadway, concrete walls, and a right-side guardrail appears dry and smooth as traffic flows steadily toward the bright exit ahead. A white truck drives ahead in the ego lane and moves away, leading the stream. A small van travels in the same lane between the ego car and the truck at a steady pace, effectively setting the ego vehicle's speed. A motorcycle rides ahead near the right edge of the lane and continues forward within the ego path, keeping close enough to be relevant.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07300", "split": "train", "clip_key": "2020-0210-155354_015136_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "015136"}, "frames": ["2020-0210-155354_015136_movie_t-3.jpg", "2020-0210-155354_015136_movie_t-2.jpg", "2020-0210-155354_015136_movie_t-1.jpg", "2020-0210-155354_015136_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-lane two-way road with no median and smooth pavement; the ego travels in the left lane as traffic slows near a signalized intersection ahead. A red mid-SUV directly ahead in the ego lane is stopped with brake lights on because of traffic congestion at the intersection, holding the ego vehicle. The opposite lane on the right is empty nearby with no immediate oncoming traffic. Overhead traffic signals mark the intersection ahead, and mid-rise buildings and roadside trees line the street.", "hazard_reasoning": "There is a red mid-SUV stopped in the ego lane because of traffic congestion ahead at the intersection. You should stop promptly to avoid colliding with the halted vehicle ahead."}
{"id": "train_07301", "split": "train", "clip_key": "2020-0207-151349_001262_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "001262"}, "frames": ["2020-0207-151349_001262_movie_t-3.jpg", "2020-0207-151349_001262_movie_t-2.jpg", "2020-0207-151349_001262_movie_t-1.jpg", "2020-0207-151349_001262_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light", "environment_perception": "An urban multi-lane road with smooth asphalt approaches a signalized intersection, with no physical median and moderate traffic temporarily halted. The ego vehicle proceeds in the left lane. A silver hatchback directly ahead in the ego lane is stopped with brake lights on because the signal ahead is red, holding the ego car. To the right, a dark van and a small silver van in adjacent lanes slow and queue at the stop line, remaining in their lanes. A white car sits partly alongside at the far left near the curb without merging. Overhead traffic lights show solid red for this approach, and a few pedestrians walk along the left sidewalk.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to avoid a collision due to the red light and the halted vehicle ahead."}
{"id": "train_07302", "split": "train", "clip_key": "2020-0228-150133_012729_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "012729"}, "frames": ["2020-0228-150133_012729_movie_t-3.jpg", "2020-0228-150133_012729_movie_t-2.jpg", "2020-0228-150133_012729_movie_t-1.jpg", "2020-0228-150133_012729_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the scooter", "environment_perception": "An urban two-way street with one narrow lane in each direction has no median and a slightly cracked surface, and traffic is very light. On the left edge of the lane close to the camera, a green taxi is parked along the curb, narrowing the usable lane. Farther ahead on the left in the same lane, a white scooter is parked, partially intruding into the path and constraining the path. On the right sidewalk by a public building, two pedestrians linger near the steps but stay clear of the road. No signals or speed signs are prominent, and no oncoming vehicles approach.", "hazard_reasoning": "There is a white scooter parked in the ego lane, on the left side of the road. The scooter blocks the driving path, requiring the driver to manoeuvre carefully around it."}
{"id": "train_07303", "split": "train", "clip_key": "2020-0218-103119_011758_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "011758"}, "frames": ["2020-0218-103119_011758_movie_t-3.jpg", "2020-0218-103119_011758_movie_t-2.jpg", "2020-0218-103119_011758_movie_t-1.jpg", "2020-0218-103119_011758_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban intersection is viewed from a narrow one-lane side street with a zebra crossing meeting a two-way main road without a median; the pavement is clean and traffic on the main road is moderate. A silver box truck directly ahead in the ego lane turns right onto the main road, briefly blocking the exit and setting the ego car's pace. On the main road, a white van and another small truck travel across the junction as cross-traffic, which the turning truck yields to. A pedestrian in a red jacket stands on the right sidewalk beside the crosswalk and does not step into the roadway. Several vehicles are stopped or loading along the far curb, but they remain clear of the ego path.", "hazard_reasoning": "There is a silver truck in front of the ego car, turning right. The turning truck partially blocks the intersection and reduces visibility of crossing cyclists and vehicles, so you should slow down to avoid collisions."}
{"id": "train_07304", "split": "train", "clip_key": "titan_clip_194_000318_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_194_000318_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_194_000318_movie_t-3_augB1.jpg", "titan_clip_194_000318_movie_t-2_augB1.jpg", "titan_clip_194_000318_movie_t-1_augB1.jpg", "titan_clip_194_000318_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian crossing ahead", "environment_perception": "A narrow urban street between tall buildings hosts a single lane with no divider, smooth yellow paving, and no visible motor traffic. Ahead in the middle of the lane, a pedestrian wearing a white shirt and black pants crosses toward the right sidewalk, directly across the vehicle's path and constraining pace. Near the left foreground curb, a person with a white umbrella steps off the sidewalk and begins to cross diagonally into the lane, potentially entering the path. Farther ahead on the right sidewalk, several pedestrians walk under umbrellas parallel to the road, remaining outside the lane. Short bollards line the left edge, and no salient signals or posted speeds are visible.", "hazard_reasoning": "A pedestrian wearing a white shirt and black pants is crossing in the middle of the lane to the right side. The driver should slow down to yield to the pedestrian crossing the lane and prevent a collision."}
{"id": "train_07305", "split": "train", "clip_key": "titan_clip_1072_000834_movie", "source": {"subset": "titan", "scenario": "clip_1072", "frame": "000834"}, "frames": ["titan_clip_1072_000834_movie_t-3.jpg", "titan_clip_1072_000834_movie_t-2.jpg", "titan_clip_1072_000834_movie_t-1.jpg", "titan_clip_1072_000834_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "manoeuvre carefully to avoid the pedestrian", "environment_perception": "An urban neighborhood street with a narrow two-way lane, no median, smooth asphalt, and light traffic; the road bends gently left beneath trees, with a red curbside strip on the ego vehicle's left and a riverside railing on the right. Two pedestrians on the right edge ahead walk toward the ego vehicle close to the travel lane, including a person wearing a brown dress with a white shirt, and their proximity reduces available clearance. A delivery scooter stands stopped at the left curb slightly ahead, facing away and narrowing the passing space. Several bicycles are parked along the right railing beside the pedestrians and further constrict the roadside.", "hazard_reasoning": "There is a pedestrian wearing a brown dress and a white shirt, and walking towards the ego car on the right side of the road. The driver should manoeuvre carefully to avoid colliding with the pedestrian in the roadway."}
{"id": "train_07306", "split": "train", "clip_key": "2020-0226-140503_071821_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "071821"}, "frames": ["2020-0226-140503_071821_movie_t-3.jpg", "2020-0226-140503_071821_movie_t-2.jpg", "2020-0226-140503_071821_movie_t-1.jpg", "2020-0226-140503_071821_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and separate oncoming lanes to the right runs straight between mid-rise buildings; the pavement is smooth and traffic is queued at an intersection. Ahead in the ego lane a black hatchback is stopped for a red traffic light, holding the ego car. In the right lane a large flatbed truck waits slightly ahead at the line, limiting the right-side view. In the left lane a small scooter with a delivery box edges forward near the crosswalk beside a silver minivan, positioning itself at the front of that lane's queue. The signal ahead shows red.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe distance and prevent a collision."}
{"id": "train_07307", "split": "train", "clip_key": "2020-0210-155354_014008_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "014008"}, "frames": ["2020-0210-155354_014008_movie_t-3.jpg", "2020-0210-155354_014008_movie_t-2.jpg", "2020-0210-155354_014008_movie_t-1.jpg", "2020-0210-155354_014008_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban street with two lanes in the ego direction and no median stretches ahead on smooth dry asphalt, with light traffic flowing toward a signalized intersection. A red hatchback is stopped ahead in the ego lane in front of the camera car, limiting its progress. To the right, a white compact car in the adjacent same-direction lane continues forward and begins to pull ahead past the stopped vehicle. On the left sidewalk, a pedestrian walks along the hedge, remaining clear of the roadway. No other hazards are visible.", "hazard_reasoning": "There is a red hatchback stopped in front of the ego car. The stopped vehicle ahead requires prompt stopping to avoid collision, so you must stop immediately."}
{"id": "train_07308", "split": "train", "clip_key": "2020-0221-115122_000174_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "000174"}, "frames": ["2020-0221-115122_000174_movie_t-3.jpg", "2020-0221-115122_000174_movie_t-2.jpg", "2020-0221-115122_000174_movie_t-1.jpg", "2020-0221-115122_000174_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy same-direction traffic; the ego vehicle is in the left of the through lanes beside a red-colored curb lane and a fenced sidewalk. A silver sedan directly ahead in the ego lane is stopped for a red traffic light, holding the ego car. To the right, several vans in adjacent lanes queue slowly toward the intersection, inching forward parallel to the ego lane. Pedestrians crowd the left sidewalk behind a railing near the junction, some waiting by the crosswalk but remaining off the roadway. An overhead signal and gantry mark the intersection ahead.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop because the sedan is halted at the red light and proceeding could result in a rear-end collision."}
{"id": "train_07309", "split": "train", "clip_key": "titan_clip_1173_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1173_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1173_000198_movie_t-3_augB1.jpg", "titan_clip_1173_000198_movie_t-2_augB1.jpg", "titan_clip_1173_000198_movie_t-1_augB1.jpg", "titan_clip_1173_000198_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "An urban back street with a single narrow lane runs between construction fences; the pavement is worn and the road curves slightly uphill ahead, with light traffic. A white work truck stands on the immediate right shoulder partly protruding into the lane, constraining the ego vehicle to the left. On the left near the fence, a pedestrian wearing black pants, a blue shirt, a cap, and a backpack walks toward the ego car along the edge and could step into the lane. Farther ahead on the right, another pedestrian walks away beside a line of cones, close to the travel path. Cones and barriers define a work zone and limit sight lines.", "hazard_reasoning": "There is a pedestrian wearing black pants, a blue shirt, a cap, and carrying a backpack, walking on the left side of the road, toward the ego car. The pedestrian is approaching the vehicle's path, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_07310", "split": "train", "clip_key": "2020-0203-154554_054147_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "054147"}, "frames": ["2020-0203-154554_054147_movie_t-3.jpg", "2020-0203-154554_054147_movie_t-2.jpg", "2020-0203-154554_054147_movie_t-1.jpg", "2020-0203-154554_054147_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped truck on the right.", "environment_perception": "An urban divided arterial runs beneath an elevated expressway, with three straight-through lanes in the ego direction and a guardrail median; the pavement looks smooth and traffic is light to moderate as the car approaches a green signal. Ahead on the right edge of the intersection, a black car is stopped and occupies part of the curbside lane, narrowing the approach. Just before it in the same lane, a white van is also stopped by the curb, effectively blocking that lane and constraining any right-lane pass. In the center lane ahead, a small van moves through the junction and sets the pace for vehicles continuing straight. On the far right beyond the median, an oncoming bus proceeds in the opposite carriageway without interacting with the ego path.", "hazard_reasoning": "There is a black pickup truck stopped on the right side of the intersection. This stopped vehicle may impede turns or cause sudden lane shifts, so you should be aware to adjust speed and avoid collisions."}
{"id": "train_07311", "split": "train", "clip_key": "2020-0131-103016_011998_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "011998"}, "frames": ["2020-0131-103016_011998_movie_t-3.jpg", "2020-0131-103016_011998_movie_t-2.jpg", "2020-0131-103016_011998_movie_t-1.jpg", "2020-0131-103016_011998_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with no physical median and smooth pavement carries moderate traffic toward a signalized intersection; oncoming traffic flows on the right side of the roadway. A black van directly ahead in the ego lane slows as a white box truck ahead of it merges left into the ego lane, constraining the ego car's pace. A motorcycle slightly ahead and a bit to the right rides between lanes toward the intersection, continuing straight and passing close to the van in our path. The white box truck initiating the merge comes from the adjacent right lane and edges into the ego lane in front of the van. Additional vehicles proceed in adjacent same-direction lanes while steady oncoming streams pass on the far side.", "hazard_reasoning": "There is a black van slowing down in the ego lane, in front of the ego car, because of the truck ahead of it, merging into the ego lane. You should slow down to maintain a safe distance and avoid collision with the merging truck."}
{"id": "train_07312", "split": "train", "clip_key": "2020-0207-151349_072752_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "072752"}, "frames": ["2020-0207-151349_072752_movie_t-3.jpg", "2020-0207-151349_072752_movie_t-2.jpg", "2020-0207-151349_072752_movie_t-1.jpg", "2020-0207-151349_072752_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows a single-lane left-side roadway running beside a lower parallel road, bounded by concrete barriers and passing beneath an overpass; the pavement is smooth and traffic is light. A black van directly ahead in the ego lane moves forward under the overpass and proceeds through a green traffic light, setting the ego vehicle's pace. Traffic on the lower parallel road to the right flows independently behind the barrier and does not interact with the ego lane. A few roadside cones and a narrow curb line the left edge without encroaching on the lane.", "hazard_reasoning": "A black van is driving in front of the ego car in the ego lane, because of the green traffic light. The signal ahead may change soon, so the driver should start moving promptly to clear the intersection safely."}
{"id": "train_07313", "split": "train", "clip_key": "titan_clip_530_000234_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_530_000234_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_530_000234_movie_t-3_augB1.jpg", "titan_clip_530_000234_movie_t-2_augB1.jpg", "titan_clip_530_000234_movie_t-1_augB1.jpg", "titan_clip_530_000234_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian crossing ahead", "environment_perception": "An urban two-way street with a single narrow lane each way runs between mid-rise buildings, the asphalt clean and sunlit, and traffic is light with no moving vehicles ahead. The ego vehicle proceeds in the left lane. A man wearing black pants and a gray T-shirt walks away from the ego vehicle in the middle of the road ahead, diverted there by a parked vehicle, and he occupies the ego path and constrains the pace. A circular roadside sign shows 30. Numerous vehicles are parked along both sides, including a silver van close on the left and a small truck stopped farther ahead on the left that narrows the passage, and a bicycle is parked by the right storefront.", "hazard_reasoning": "There is a man wearing black pants and a gray T-shirt, walking in the middle of the road and away from the ego car, because of the parked vehicle. The pedestrian walking in the center of the lane may suddenly change direction or obstruct your path, so you should slow down to avoid collision."}
{"id": "train_07314", "split": "train", "clip_key": "2020-0131-135401_052878_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "052878"}, "frames": ["2020-0131-135401_052878_movie_t-3.jpg", "2020-0131-135401_052878_movie_t-2.jpg", "2020-0131-135401_052878_movie_t-1.jpg", "2020-0131-135401_052878_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane avenue with three lanes in the ego direction runs between mid-rise buildings; the pavement is smooth and traffic is moderate, flowing steadily. Directly ahead in the ego lane, a gray sedan pulls away as the road ahead is clear, opening a growing gap while it runs in front of a black sedan. Ahead-right in the adjacent lane, a black boxy car cruises at a similar speed and could block a rightward lane change. Ahead-left, a motorcyclist travels straight in the left lane, gradually moving forward but remaining separate from the ego path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07315", "split": "train", "clip_key": "2020-0217-110854_067143_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "067143"}, "frames": ["2020-0217-110854_067143_movie_t-3.jpg", "2020-0217-110854_067143_movie_t-2.jpg", "2020-0217-110854_067143_movie_t-1.jpg", "2020-0217-110854_067143_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "be aware of the parked truck", "environment_perception": "An urban boulevard with two lanes in each direction and a wide painted median runs straight under roadside trees; the pavement is smooth and traffic is moderate with steady flow. A white truck just ahead to the left straddles the broken line between the left lane and the ego lane to pass a parked vehicle at the curb, narrowing space for the ego vehicle. A small white hatchback farther ahead in the ego lane continues straight at a modest pace, effectively setting our speed behind it and the truck. In the opposing lanes to the right, a motorcycle rides toward us along the median without deviating. A pedestrian crossing sign is visible on the right near the shops.", "hazard_reasoning": "There is a white truck straddling the broken road lines between the left lane and the ego lane, because of a parked vehicle. The parked truck partially blocks the ego lane, so the driver should be aware to avoid a collision."}
{"id": "train_07316", "split": "train", "clip_key": "titan_clip_708_000276_movie", "source": {"subset": "titan", "scenario": "clip_708", "frame": "000276"}, "frames": ["titan_clip_708_000276_movie_t-3.jpg", "titan_clip_708_000276_movie_t-2.jpg", "titan_clip_708_000276_movie_t-1.jpg", "titan_clip_708_000276_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around cyclist", "environment_perception": "A narrow urban residential two-way street with a single shared lane and no median runs ahead, the pavement smooth and traffic light. An oncoming cyclist in a white shirt and black pants rides toward the ego vehicle along the right edge of the roadway because a utility pole blocks part of the right-side sidewalk, potentially passing close in the tight lane. A white SUV is parked along the left curb and slightly intrudes into the carriageway, narrowing the passage. Roadside signs on the left indicate a left-direction instruction and a 2 t truck restriction.", "hazard_reasoning": "There's a cyclist, wearing a white shirt, wearing black pants, wearing a cap, cycling toward the ego car, on the right side of the road, because of the electricity pole blocking the right-hand sidewalk. The cyclist's path brings them into the roadway, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_07317", "split": "train", "clip_key": "2020-0226-101332_011688_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "011688"}, "frames": ["2020-0226-101332_011688_movie_t-3.jpg", "2020-0226-101332_011688_movie_t-2.jpg", "2020-0226-101332_011688_movie_t-1.jpg", "2020-0226-101332_011688_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one narrow lane per direction curves gently right beside mid-rise buildings, marked by a solid yellow centerline and a wet, worn pavement; traffic is light with no vehicles ahead or oncoming. A pedestrian on the right curb at the near zebra crossing waits at the edge and may step into the ego lane. Another person farther ahead near the building entrance walks leftward along the far sidewalk, remaining outside the roadway. A third pedestrian on the left sidewalk proceeds away from the camera parallel to the lane. Pedestrian crossing signals and signage mark the crosswalk, and protective railings line both sidewalks.", "hazard_reasoning": "No caption provided. No hazards detected; the road is clear and the only factor is the wet surface, so the driver may proceed normally."}
{"id": "train_07318", "split": "train", "clip_key": "titan_clip_902_000324_movie", "source": {"subset": "titan", "scenario": "clip_902", "frame": "000324"}, "frames": ["titan_clip_902_000324_movie_t-3.jpg", "titan_clip_902_000324_movie_t-2.jpg", "titan_clip_902_000324_movie_t-1.jpg", "titan_clip_902_000324_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban two-way street with no median and intact pavement runs between low buildings, and traffic is very light as the view approaches a small intersection that bends slightly right. Ahead on the left edge of the ego lane, a white truck is parked for unloading with its rear open, partially blocking the lane and constraining the approach. A person stands at the truck's tail handling items near the curb close to the roadway. No oncoming or same-direction moving vehicles are visible. A parked scooter at the left foreground and several parked bicycles on the right add roadside obstacles.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. The parked truck creates a blind spot and may block oncoming traffic or pedestrians, so the driver should manoeuvre carefully around it."}
{"id": "train_07319", "split": "train", "clip_key": "2020-0207-151349_061806_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "061806"}, "frames": ["2020-0207-151349_061806_movie_t-3.jpg", "2020-0207-151349_061806_movie_t-2.jpg", "2020-0207-151349_061806_movie_t-1.jpg", "2020-0207-151349_061806_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction runs straight on smooth pavement, edged by guardrails and flexible bollards separating it from the opposite side, with heavy slow-moving traffic. A silver sedan directly ahead in the ego lane slows because of congestion further ahead. In the adjacent right lane a white car slightly ahead also creeps forward in the queue. A small white truck is very close on the right side near the camera, edging forward alongside without entering the ego lane. An overhead blue sign for Route 318 shows directions to Sangenjaya and Noborito and a junction in 300 m.", "hazard_reasoning": "There is a silver sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and reduce the risk of a rear-end collision."}
{"id": "train_07320", "split": "train", "clip_key": "titan_clip_446_000450_movie", "source": {"subset": "titan", "scenario": "clip_446", "frame": "000450"}, "frames": ["titan_clip_446_000450_movie_t-3.jpg", "titan_clip_446_000450_movie_t-2.jpg", "titan_clip_446_000450_movie_t-1.jpg", "titan_clip_446_000450_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with a single narrow lane and no median shows smooth pavement and light traffic. Cones and signs line the left edge beside a construction hoarding, slightly narrowing the lane. A white mini-van travels ahead in the ego lane at low speed, and the ego vehicle follows. Several pedestrians are near the left curb by the cones, walking along the edge close to the roadway and relevant to the ego path. On the right sidewalk, a pedestrian wearing a black shirt walks away from the camera parallel to the road.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, crossing the street, and walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a potential collision."}
{"id": "train_07321", "split": "train", "clip_key": "titan_clip_672_000522_movie", "source": {"subset": "titan", "scenario": "clip_672", "frame": "000522"}, "frames": ["titan_clip_672_000522_movie_t-3.jpg", "titan_clip_672_000522_movie_t-2.jpg", "titan_clip_672_000522_movie_t-1.jpg", "titan_clip_672_000522_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road runs through a work zone where cones, accordion fences, and barricades narrow both sides, and steel plates cover patched pavement; traffic appears light. The ego lane on the left stays clear while the opposing lane shows no oncoming vehicles nearby. A white construction truck is stopped on the right shoulder ahead at a site entrance and could merge into the ego lane. Another work vehicle sits farther ahead on the right within the barricaded area and remains stationary. Temporary work-zone signs and channelizing devices line the edges, creating a constrained corridor but no immediate obstruction in the lane.", "hazard_reasoning": "Construction materials and equipment partially obstruct the right lane, reducing available width and increasing collision risk. Drivers should slow down to navigate the narrow passage safely."}
{"id": "train_07322", "split": "train", "clip_key": "2020-0228-102841_015741_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "015741"}, "frames": ["2020-0228-102841_015741_movie_t-3.jpg", "2020-0228-102841_015741_movie_t-2.jpg", "2020-0228-102841_015741_movie_t-1.jpg", "2020-0228-102841_015741_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A busy urban intersection with commercial buildings is viewed from a stopped vehicle in the left lane; pavement is clean and traffic flow on the cross street is moderate. The signal facing the ego direction shows red. A white microvan ahead moves left to right straight through the junction, occupying the crossing path while the ego waits. Farther across, another white van continues rightward on the same cross street. A black taxi stands at the near right corner by the crosswalk, stationary at the curb and not entering the ego lane.", "hazard_reasoning": "No immediate hazards detected in the current scenario. Although vehicles are stopped and road users are nearby, there are no obstacles or sudden movements requiring action, so the driver should continue normal driving vigilance."}
{"id": "train_07323", "split": "train", "clip_key": "2020-0214-102601_061877_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "061877"}, "frames": ["2020-0214-102601_061877_movie_t-3.jpg", "2020-0214-102601_061877_movie_t-2.jpg", "2020-0214-102601_061877_movie_t-1.jpg", "2020-0214-102601_061877_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs under an elevated expressway, with smooth pavement and heavy stop-and-go traffic in the same direction. Directly ahead in the ego lane, a blue SUV is stopped because of congestion and blocks the ego vehicle's path. In the lane to the left, a white minivan sits slightly ahead, also halted with the queue. Farther forward, several cars in both lanes creep toward a distant junction, collectively constraining movement.", "hazard_reasoning": "There is a blue SUV stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle due to slow-moving traffic."}
{"id": "train_07324", "split": "train", "clip_key": "2020-0206-142535_021508_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "021508"}, "frames": ["2020-0206-142535_021508_movie_t-3.jpg", "2020-0206-142535_021508_movie_t-2.jpg", "2020-0206-142535_021508_movie_t-1.jpg", "2020-0206-142535_021508_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with two same-direction lanes and a raised planted median on the right is dry and smooth, and traffic is heavy and stopped at a signal. Ahead in the ego lane, a silver hatchback is stopped because the traffic light facing our approach shows red, holding the ego vehicle. Farther ahead in the same lane, a large white box truck is also stopped at the intersection, limiting forward view and setting the pace. In the adjacent left lane, a white SUV beside and slightly ahead slows and queues, remaining in its lane. On the far side of the median, oncoming traffic proceeds along the opposite carriageway. Overhead signals and side masts display solid red for our direction.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, because of the red traffic lights. The driver should stop to avoid a collision with the halted vehicle and obey the red light."}
{"id": "train_07325", "split": "train", "clip_key": "2020-0131-103016_068239_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "068239"}, "frames": ["2020-0131-103016_068239_movie_t-3.jpg", "2020-0131-103016_068239_movie_t-2.jpg", "2020-0131-103016_068239_movie_t-1.jpg", "2020-0131-103016_068239_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane one-way street runs between office buildings, the pavement dry and smooth, with light traffic near the ego car and a steadier flow farther ahead in the right lane. Two people carrying backpacks cross from right to left on the marked crosswalk directly in front of the ego vehicle, occupying the path across its lane. A line of cars and vans continues straight in the adjacent right lane without merging. A black minivan is stopped at the left curb just beyond the crosswalk. An overhead traffic signal at the left shows red, and a no-turn sign stands on the right.", "hazard_reasoning": "There are two males carrying backpacks, crossing the road from right to left in front of the ego-car, because there is a crosswalk. The driver should stop to yield to the pedestrians crossing at the crosswalk directly ahead."}
{"id": "train_07326", "split": "train", "clip_key": "titan_clip_877_000570_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_877_000570_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_877_000570_movie_t-3_augB1.jpg", "titan_clip_877_000570_movie_t-2_augB1.jpg", "titan_clip_877_000570_movie_t-1_augB1.jpg", "titan_clip_877_000570_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban two-way street with one narrow lane per direction and no median stretches ahead, the asphalt in good condition and traffic light. The ego travels in the left lane. A small flatbed truck is stopped along the left edge just ahead, partially intruding into the ego lane and slowing the approach as the vehicle prepares to pass. A pedestrian in a red shirt and black pants walks away from the ego along the left side near this truck because the parked vehicle occupies the curb space, moving close to the ego path. On the right at a marked crosswalk, another pedestrian pauses at the curb beside a side street and does not enter the roadway. A blue no-parking sign stands on the right near the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a red shirt and black pants walking on the left side of the road away from the ego car because of a parked vehicle. The pedestrian may step into the roadway unexpectedly due to limited visibility caused by the parked truck, so the driver should carefully manoeuvre around the obstruction to avoid collision."}
{"id": "train_07327", "split": "train", "clip_key": "2020-0203-154554_073623_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "073623"}, "frames": ["2020-0203-154554_073623_movie_t-3.jpg", "2020-0203-154554_073623_movie_t-2.jpg", "2020-0203-154554_073623_movie_t-1.jpg", "2020-0203-154554_073623_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the slowing vehicle.", "environment_perception": "An urban multi-lane arterial with a painted median and good pavement approaches a signalized intersection, and traffic is heavy with a slow queue. The flow remains slow as vehicles bunch near the junction. Directly ahead in the ego lane, a red hatchback slows in the middle of the intersection because congestion continues beyond, and it sets the ego vehicle's pace. Slightly left ahead, a white kei van in the neighboring lane also creeps forward with the queue without merging. On the far right, oncoming traffic moves through its lanes independently. The traffic light ahead shows green, yet the queue inhibits clearing. Bright low sun glare faces the camera.", "hazard_reasoning": "There is a red hatchback slowing in the middle of the intersection, in the ego lane, because of traffic congestion ahead on the road. You should yield to the slowing hatchback to maintain a safe distance and avoid collision."}
{"id": "train_07328", "split": "train", "clip_key": "2020-0228-102841_047046_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "047046"}, "frames": ["2020-0228-102841_047046_movie_t-3.jpg", "2020-0228-102841_047046_movie_t-2.jpg", "2020-0228-102841_047046_movie_t-1.jpg", "2020-0228-102841_047046_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop the vehicle at the red light", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection with clear lane markings and dry pavement; traffic is moderate and momentarily stopped at the light. A white van directly ahead in the ego lane is stopped for the red traffic light, constraining the ego vehicle. To its right, a motorcyclist with a delivery box waits stationary near the stop line in the adjacent lane, close to the ego lane. Farther right, another small white van is also stopped in the parallel lane, forming the front row at the intersection. Overhead signals facing the ego direction display red.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of the red traffic light. Driver should stop to avoid rear-end collisions and obey the traffic signal."}
{"id": "train_07329", "split": "train", "clip_key": "titan_clip_368_000060_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_368_000060_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_368_000060_movie_t-3_augB1.jpg", "titan_clip_368_000060_movie_t-2_augB1.jpg", "titan_clip_368_000060_movie_t-1_augB1.jpg", "titan_clip_368_000060_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow two-way urban street without a median shows smooth pavement and light traffic, with no moving vehicles immediately ahead or oncoming. Midway in front of the ego car, a pedestrian wearing a black shirt and black pants pushes a cart while crossing from left to right across the lane, directly occupying the ego path and constraining its pace. Farther ahead on the right, a white delivery truck is stopped at the curb partly in the roadway, narrowing the lane and creating a mild obstruction.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants, pushing a cart, and crossing the street from left to right, in front of the ego car. Because they are entering the vehicle's path, the driver should yield to avoid colliding with the crossing pedestrian."}
{"id": "train_07330", "split": "train", "clip_key": "titan_clip_1176_000048_movie", "source": {"subset": "titan", "scenario": "clip_1176", "frame": "000048"}, "frames": ["titan_clip_1176_000048_movie_t-3.jpg", "titan_clip_1176_000048_movie_t-2.jpg", "titan_clip_1176_000048_movie_t-1.jpg", "titan_clip_1176_000048_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "A narrow urban residential two-way street without a center line has smooth pavement and light traffic as the ego approaches a small intersection where buildings and hedges pinch the roadway. Ahead on the left at the intersection, a white van is parked with its rear open for unloading, occupying part of the lane and constraining the ego vehicle's path. On the near right, a woman walks off the sidewalk toward the roadway, potentially entering the ego lane. Farther ahead near the van, another pedestrian walks along the middle of the lane, occupying the travel path ahead. Several parked cars line the right curb and further narrow the usable width. A portable no-parking sign stands on the left.", "hazard_reasoning": "There is a white van parked at the left side of the intersection, because it is being unloaded. The driver should carefully manoeuvre around the unloading van to avoid collision and maintain safe clearance."}
{"id": "train_07331", "split": "train", "clip_key": "2020-0225-145150_002225_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "002225"}, "frames": ["2020-0225-145150_002225_movie_t-3.jpg", "2020-0225-145150_002225_movie_t-2.jpg", "2020-0225-145150_002225_movie_t-1.jpg", "2020-0225-145150_002225_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "In a dense urban corridor, the ego car travels on a two-way road with one lane each direction separated by raised markers; the pavement is clean and traffic is light. A white scooter directly ahead in the ego lane slows while proceeding toward the upcoming intersection, momentarily setting the pace. An oncoming motorcycle approaches in the opposite lane near the centerline and continues straight without encroaching on our path. A red sedan stands at the right curb ahead outside the travel lane. The junction ahead has no visible signal.", "hazard_reasoning": "There is a white scooter slowing down, in the ego lane, in front of the ego-car. The scooter's deceleration ahead could require the driver to reduce speed to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_07332", "split": "train", "clip_key": "titan_clip_874_000342_movie", "source": {"subset": "titan", "scenario": "clip_874", "frame": "000342"}, "frames": ["titan_clip_874_000342_movie_t-3.jpg", "titan_clip_874_000342_movie_t-2.jpg", "titan_clip_874_000342_movie_t-1.jpg", "titan_clip_874_000342_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "A narrow urban shopping street is shown, brick-paved, well maintained, and lacking a centerline or median; traffic is very light and slow. A pedestrian in a gray shirt carrying a handbag walks ahead along the left side away from the ego car, close to the left edge of its path. Two other pedestrians slightly ahead near the center-left walk away in the roadway, which keeps the ego vehicle following at low speed. Farther ahead, a small white van in the same direction moves away along the street, remaining in front. Bicycles and shop signs line the curbs but do not intrude into the lane.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, carrying a handbag, walking on the left side of the road, away from the ego car. The pedestrian may enter the driving path unexpectedly, so the driver should manoeuvre carefully around the pedestrian to avoid collision."}
{"id": "train_07333", "split": "train", "clip_key": "2020-0217-110854_021794_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "021794"}, "frames": ["2020-0217-110854_021794_movie_t-3.jpg", "2020-0217-110854_021794_movie_t-2.jpg", "2020-0217-110854_021794_movie_t-1.jpg", "2020-0217-110854_021794_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes and smooth pavement runs between mid-rise buildings; traffic is moderate, moving steadily while the right lane forms a short queue near the curb. A white bus directly ahead in the middle lane drives away from the ego car, leading the flow. A white van slightly ahead in the right lane rolls slowly with the queued line, constraining that lane's progress. A small white car ahead to the left continues straight at a similar speed without merging toward the ego path. Pedestrians remain on the left sidewalk near storefronts and bicycles, not entering the roadway.", "hazard_reasoning": "There is a white bus driving away from the ego car, in front of the ego car. The parked truck on the right creates a visual obstruction, so following the bus will help maintain a safe path and avoid hidden hazards."}
{"id": "train_07334", "split": "train", "clip_key": "titan_clip_346_000642_movie", "source": {"subset": "titan", "scenario": "clip_346", "frame": "000642"}, "frames": ["titan_clip_346_000642_movie_t-3.jpg", "titan_clip_346_000642_movie_t-2.jpg", "titan_clip_346_000642_movie_t-1.jpg", "titan_clip_346_000642_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop for pedestrian.", "environment_perception": "An urban shopping district intersection appears, paved with interlocking bricks and lacking marked lanes or a median; vehicular traffic is absent while pedestrian flow is moderate. Ahead, a woman in black clothing carrying bags walks from the left corner to the right across the junction, crossing the ego path. On the right curb, two pedestrians stand at the edge and start to step toward the roadway, close to the path. Farther ahead along the narrow street, several people walk away in the center, occupying the through space. A red stop sign and a blue left-turn-only sign face the ego approach, and orange safety cones sit by the left shopfront.", "hazard_reasoning": "There is a woman wearing black pants and a black hat, carrying bags, and walking on the left side of the intersection, from the left side to the right side. Drivers should stop for the pedestrian crossing to avoid a potential collision."}
{"id": "train_07335", "split": "train", "clip_key": "2020-0207-101955_078046_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "078046"}, "frames": ["2020-0207-101955_078046_movie_t-3.jpg", "2020-0207-101955_078046_movie_t-2.jpg", "2020-0207-101955_078046_movie_t-1.jpg", "2020-0207-101955_078046_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in our direction and no median approaches a signalized intersection; the asphalt is smooth and traffic is moderate but slowing near the crosswalk. A blue truck directly ahead in the ego left lane decelerates toward the stop line because a white box truck farther ahead in the same lane is already slowing, constraining our pace. In the opposite direction, a white van proceeds straight through the junction without interacting with us. Overhead traffic lights facing the ego approach show red.", "hazard_reasoning": "A blue truck is slowing in front of the ego car in the ego lane, because another truck ahead is slowing. The driver should slow down to maintain a safe following distance and avoid collision with the slowing truck."}
{"id": "train_07336", "split": "train", "clip_key": "2020-0131-103016_004751_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "004751"}, "frames": ["2020-0131-103016_004751_movie_t-3.jpg", "2020-0131-103016_004751_movie_t-2.jpg", "2020-0131-103016_004751_movie_t-1.jpg", "2020-0131-103016_004751_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of the cyclist ahead", "environment_perception": "An urban two-way road curves gently right with no median and smooth pavement, and traffic is light. The ego vehicle travels in the left lane while the oncoming lane to the right is clear. A cyclist wearing all black rides ahead in the left lane away from the ego car along the curve, currently not constraining its pace. A white car ahead to the right waits at the mouth of a side street outside the ego lane. Buildings and trees along the bend create a partially blind view beyond the corner.", "hazard_reasoning": "There is a cyclist wearing all black, cycling in the left lane, away from the ego car. The driver should be cautious because the cyclist could move unpredictably into the ego vehicle's path, requiring timely adjustments to maintain safety."}
{"id": "train_07337", "split": "train", "clip_key": "2020-0131-135401_048480_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "048480"}, "frames": ["2020-0131-135401_048480_movie_t-3.jpg", "2020-0131-135401_048480_movie_t-2.jpg", "2020-0131-135401_048480_movie_t-1.jpg", "2020-0131-135401_048480_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An elevated urban divided road passes between mid-rise buildings, with a guardrail on the left and a concrete median on the right; the dry pavement looks worn, and traffic in the ego lane is heavy and largely stopped. Directly ahead in the ego lane, a white hatchback is stopped because of congestion, blocking the ego vehicle. Farther ahead in the same lane, a line of cars alternately creeps and halts, constraining the pace. On the adjacent separated roadway to the right, vehicles continue steadily along the curve without entering the ego path.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because of traffic congestion. Drivers should stop to avoid colliding with the halted vehicle amid the congestion."}
{"id": "train_07338", "split": "train", "clip_key": "2020-0207-151349_046762_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "046762"}, "frames": ["2020-0207-151349_046762_movie_t-3.jpg", "2020-0207-151349_046762_movie_t-2.jpg", "2020-0207-151349_046762_movie_t-1.jpg", "2020-0207-151349_046762_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs beneath an elevated expressway with dry, slightly worn pavement, and traffic is light and flowing steadily. Ahead to the right, a silver van moves left into the ego lane in front of the camera car, briefly tightening the headway. Slightly ahead, a dark gray hatchback stays in the right lane and continues straight at a similar speed without merging. Farther ahead, a small white van in the ego lane travels steadily and sets the pace. Parked service and construction vehicles sit off the roadway behind the right-hand barrier, and bicycles line the left sidewalk without obstructing the lane.", "hazard_reasoning": "There is a silver van lane changing in front of the ego car, from the right lane to the ego lane. The van is cutting into the ego-vehicle's path and may reduce the available space ahead, so the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_07339", "split": "train", "clip_key": "titan_clip_250_000246_movie", "source": {"subset": "titan", "scenario": "clip_250", "frame": "000246"}, "frames": ["titan_clip_250_000246_movie_t-3.jpg", "titan_clip_250_000246_movie_t-2.jpg", "titan_clip_250_000246_movie_t-1.jpg", "titan_clip_250_000246_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian with stroller", "environment_perception": "A narrow urban backstreet with a single two-way lane and no median appears clean and smooth, and traffic is light with no oncoming vehicles visible. Near the left edge close ahead, a pedestrian wearing a blue patterned shirt and blue pants pushes a stroller away from the ego vehicle along the curb, narrowing the lane and potentially affecting the vehicle's path. Farther ahead in the middle of the roadway, another pedestrian walks away along the center area, occupying the travel path and influencing speed. Parked scooters and bicycles line the right curb by shopfronts, reducing lateral clearance, and bright sun glare toward the far end lowers contrast.", "hazard_reasoning": "There is a pedestrian wearing a blue patterned shirt and blue pants, pushing a stroller, walking on the left side of the road, away from the ego car. They may step into the lane unexpectedly, so the driver should stay aware to avoid a collision."}
{"id": "train_07340", "split": "train", "clip_key": "titan_clip_1268_000540_movie", "source": {"subset": "titan", "scenario": "clip_1268", "frame": "000540"}, "frames": ["titan_clip_1268_000540_movie_t-3.jpg", "titan_clip_1268_000540_movie_t-2.jpg", "titan_clip_1268_000540_movie_t-1.jpg", "titan_clip_1268_000540_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "A narrow urban back street with two-way left-side traffic has no median and smooth dry asphalt, and the ego car proceeds slowly with light flow. On the left side of the road, a cyclist in a white T-shirt rides toward the ego vehicle close to the curb and may enter the ego lane as they approach. Farther ahead, another cyclist moves away along the center of the lane, modestly constraining the ego car's pace. A pedestrian near the left edge and another on the right sidewalk walk along the margins, close to the travel path. A parked bicycle leans against a storefront on the right.", "hazard_reasoning": "There is a cyclist wearing a white t-shirt, cycling on the left side of the road, towards the ego car. The cyclist is approaching in the ego-vehicle's path, so the driver should carefully manoeuvre to avoid collision."}
{"id": "train_07341", "split": "train", "clip_key": "titan_clip_724_000090_movie", "source": {"subset": "titan", "scenario": "clip_724", "frame": "000090"}, "frames": ["titan_clip_724_000090_movie_t-3.jpg", "titan_clip_724_000090_movie_t-2.jpg", "titan_clip_724_000090_movie_t-1.jpg", "titan_clip_724_000090_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked sedan", "environment_perception": "A narrow urban side street with smooth pavement and no centerline runs between buildings, lined by bollards and slim sidewalks; traffic is light. A white sedan ahead along the left curb is parked on the left side of the road, narrowing the available lane and constraining the ego-vehicle's path. Farther left, a gray van remains stationary in a recessed bay and does not affect the lane. Closely spaced bollards on both sides and the tight corridor between buildings limit maneuvering space.", "hazard_reasoning": "There is a white sedan parked on the left side of the road. This parked vehicle may reduce the available lane width and obstruct safe passage, so the driver should be aware of the parked sedan to avoid potential collisions."}
{"id": "train_07342", "split": "train", "clip_key": "2020-0228-102841_050993_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "050993"}, "frames": ["2020-0228-102841_050993_movie_t-3.jpg", "2020-0228-102841_050993_movie_t-2.jpg", "2020-0228-102841_050993_movie_t-1.jpg", "2020-0228-102841_050993_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane road with buildings close to the curb appears ahead; the pavement is dry with no physical median, and traffic is heavy and mostly stopped under bright glare. A gray van directly ahead in the ego lane stands stopped in a queue, blocking our path because of congestion. To the right, a large box truck in the adjacent lane idles beside the ego vehicle, restricting any lateral movement. Farther ahead to the right, a small flatbed truck creeps with the line of traffic and stays in its lane. Several cars sit along the left curb in marked bays, reducing shoulder space but remaining outside the travel lane.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The van has halted due to congestion ahead, requiring the driver to stop immediately and maintain a safe following distance."}
{"id": "train_07343", "split": "train", "clip_key": "2020-0214-102601_028479_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "028479"}, "frames": ["2020-0214-102601_028479_movie_t-3.jpg", "2020-0214-102601_028479_movie_t-2.jpg", "2020-0214-102601_028479_movie_t-1.jpg", "2020-0214-102601_028479_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to maintain a safe distance.", "environment_perception": "A dense urban arterial with multiple same-direction lanes and smooth asphalt shows heavy, mostly stopped traffic with no median visible. A white sedan directly ahead in the ego lane is stopped because of congestion, blocking the ego vehicle's path. Farther ahead in the same lane, a tall box truck remains stationary, forming part of the queue that holds the sedan and the ego car. In the right adjacent lane, several vans and trucks stand or inch forward in parallel, keeping the overall flow slow beside the ego lane.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance from the halted vehicle and avoid a rear-end collision."}
{"id": "train_07344", "split": "train", "clip_key": "2020-0228-102841_009245_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "009245"}, "frames": ["2020-0228-102841_009245_movie_t-3.jpg", "2020-0228-102841_009245_movie_t-2.jpg", "2020-0228-102841_009245_movie_t-1.jpg", "2020-0228-102841_009245_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane two-way street with a small raised median approaches a signalized intersection marked by a wide zebra crossing; the pavement is smooth and traffic is moderate with steady flow. In the oncoming lanes to the left, a small white kei van enters the intersection and continues straight toward the camera without encroaching on the ego lane. Farther back in the same oncoming stream, a black sedan advances more slowly through the junction and remains in its lane. On the near-right corner, a cyclist and several pedestrians wait by the curb near the hotel entrance, potentially about to use the crosswalk. A large white van stands at the right curb just ahead, partially blocking the view toward the crosswalk.", "hazard_reasoning": "There is a white minivan accelerating in front of the ego car, in the ego lane, because it is turning in the intersection. The driver should follow the vehicle ahead to maintain safe distance and be prepared for unexpected lane changes or slowing while it completes the turn."}
{"id": "train_07345", "split": "train", "clip_key": "2020-0226-140503_014246_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "014246"}, "frames": ["2020-0226-140503_014246_movie_t-3.jpg", "2020-0226-140503_014246_movie_t-2.jpg", "2020-0226-140503_014246_movie_t-1.jpg", "2020-0226-140503_014246_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to the yellow sedan turning left", "environment_perception": "An urban two-way street with one lane each direction and a yellow centerline approaches a signalized intersection; the pavement is dry and traffic is moderate. A white box truck ahead in the left-side ego lane moves slowly through the junction and sets the pace. From the left side of the intersection, a sedan turns into the junction toward the right, crossing the ego vehicle's view and potentially entering the ego lane. Two cyclists wait at the left corner beside the crosswalk, stationary and close to the roadway. A pedestrian signal on the right shows red, and a posted 30 sign is visible.", "hazard_reasoning": "A yellow sedan is turning into the intersection from the left side of the intersection. The turning vehicle may enter the ego-vehicle's path, so you should yield to prevent a collision."}
{"id": "train_07346", "split": "train", "clip_key": "titan_clip_254_000360_movie", "source": {"subset": "titan", "scenario": "clip_254", "frame": "000360"}, "frames": ["titan_clip_254_000360_movie_t-3.jpg", "titan_clip_254_000360_movie_t-2.jpg", "titan_clip_254_000360_movie_t-1.jpg", "titan_clip_254_000360_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian ahead.", "environment_perception": "An urban commercial intersection with a single lane each way and no median appears ahead on smooth asphalt, with light vehicle flow but heavy foot traffic. Ahead at the crosswalk, several pedestrians traverse the ego lane, including a person in a black shirt with a backpack crossing from right to left, occupying the path and keeping the car waiting. On the cross street to the left, a small white delivery truck pauses at the corner near the crosswalk while people pass. Farther to the right on the cross street, a larger truck stands facing away, narrowing the approach and limiting sightlines. Bicycles are parked along the right curb beside the shops at the corner.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a backpack, and crossing the street, from the right side to the left side, ahead at the pedestrian crossing. The driver should yield because the pedestrian is crossing ahead at the designated crosswalk."}
{"id": "train_07347", "split": "train", "clip_key": "2020-0210-101957_016292_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "016292"}, "frames": ["2020-0210-101957_016292_movie_t-3.jpg", "2020-0210-101957_016292_movie_t-2.jpg", "2020-0210-101957_016292_movie_t-1.jpg", "2020-0210-101957_016292_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately behind the truck", "environment_perception": "An urban arterial with two same-direction lanes and a central divider appears dry and well maintained, with moderate traffic as the scene approaches a signalized intersection. A white truck directly ahead in the left ego lane is stopped at the red light, holding the ego vehicle. To the right, a black coupe alongside queues in the adjacent lane, also waiting for the signal. Farther ahead in that right lane, a silver hatchback waits near the stop line. The traffic signal facing the ego shows red, and large overhead direction signs span the junction.", "hazard_reasoning": "A white truck is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to avoid colliding with the stationary truck ahead."}
{"id": "train_07348", "split": "train", "clip_key": "2020-0206-101736_015665_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "015665"}, "frames": ["2020-0206-101736_015665_movie_t-3.jpg", "2020-0206-101736_015665_movie_t-2.jpg", "2020-0206-101736_015665_movie_t-1.jpg", "2020-0206-101736_015665_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way boulevard with two lanes in the ego direction, separated from oncoming lanes by a planted median, is well paved, and traffic is queued at an intersection under a red light. A white flatbed truck with a green-covered bed is directly ahead in the ego lane and is stopped at the stop line because the signal is red. To its left, a small white van in the adjacent same-direction lane is also stopped, slightly ahead, limiting the view of the crosswalk. A pedestrian crosses the zebra from left to right in front of the waiting vehicles, moving clear of the ego path. The overhead traffic signal shows red, and no other hazards or obstacles are visible.", "hazard_reasoning": "There is a white truck stopped in the ego lane, because of the red traffic light. The driver needs to stop to avoid colliding with the stopped vehicle and comply with the red signal."}
{"id": "train_07349", "split": "train", "clip_key": "titan_clip_1147_000462_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1147_000462_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1147_000462_movie_t-3_augB1.jpg", "titan_clip_1147_000462_movie_t-2_augB1.jpg", "titan_clip_1147_000462_movie_t-1_augB1.jpg", "titan_clip_1147_000462_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street without a center line runs between shops, the worn pavement dry and traffic light; no oncoming vehicles appear as the flow slows for a stopped truck ahead. Near the center-right ahead, a pedestrian in a white T-shirt and black shorts carrying a handbag walks leftward across the street despite the absence of a marked crosswalk, potentially entering the ego vehicle's path. A white box delivery truck is stopped along the right edge just ahead, protruding into the lane and constraining the passage. A flatbed truck stands parked at the left curb in the foreground, further narrowing the roadway, while a few other pedestrians stay on the sidewalks.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt with black shorts, carrying a handbag, and crossing the street, in front of the ego car to the right side, because there is no crosswalk. The pedestrian may step into the vehicle's path unexpectedly, so the driver should stop to avoid a collision."}
{"id": "train_07350", "split": "train", "clip_key": "2020-0131-135401_087732_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "087732"}, "frames": ["2020-0131-135401_087732_movie_t-3.jpg", "2020-0131-135401_087732_movie_t-2.jpg", "2020-0131-135401_087732_movie_t-1.jpg", "2020-0131-135401_087732_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes runs ahead, separated from oncoming traffic by a concrete barrier; the pavement looks smooth and traffic is light to moderate without notable change. A white van drives ahead in the ego lane at a steady pace, effectively setting the ego vehicle's speed. A flatbed truck is slightly farther ahead in the adjacent left lane, moving similarly and keeping that lane occupied. A small white kei van is close on the left near the ego vehicle in the curb lane, advancing alongside while remaining in its lane.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane. Following this van too closely could lead to a collision if it brakes suddenly, so maintain a safe distance."}
{"id": "train_07351", "split": "train", "clip_key": "2020-0218-103119_056974_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "056974"}, "frames": ["2020-0218-103119_056974_movie_t-3.jpg", "2020-0218-103119_056974_movie_t-2.jpg", "2020-0218-103119_056974_movie_t-1.jpg", "2020-0218-103119_056974_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street runs under an elevated roadway with two same-direction lanes, no median, and smooth pavement; traffic is slow and bunched. A gray box truck directly ahead in the ego lane slows to a crawl due to congestion ahead, setting the pace for the ego car. To the right, a black SUV travels alongside at low speed in the adjacent lane, occasionally edging forward and narrowing the space to overtake. Farther ahead under the flyover, another truck queues in the right lane and inches forward with the line of vehicles, reinforcing the slowdown.", "hazard_reasoning": "There is a gray truck slowing down in front of the ego car, due to traffic congestion ahead. Therefore, the driver should slow down to maintain a safe distance and respond to the slowing truck."}
{"id": "train_07352", "split": "train", "clip_key": "titan_clip_351_000198_movie", "source": {"subset": "titan", "scenario": "clip_351", "frame": "000198"}, "frames": ["titan_clip_351_000198_movie_t-3.jpg", "titan_clip_351_000198_movie_t-2.jpg", "titan_clip_351_000198_movie_t-1.jpg", "titan_clip_351_000198_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop and let pedestrian cross", "environment_perception": "A narrow urban street with mid-rise buildings has a single travel lane and smooth pavement, and traffic is light and slow due to roadside activity constricting the lane. Ahead on the left, a large delivery truck is stopped with its cargo door open, intruding into the ego lane and limiting space to pass. A pedestrian wearing black shorts and a backpack steps from the right sidewalk and crosses in front of the ego car toward the left, directly along its path. Farther ahead on the right, another person stands by a post on the sidewalk without entering the roadway. Parked vans occupy garages on the right, and no moving oncoming vehicles are visible.", "hazard_reasoning": "There is a pedestrian wearing black shorts, carrying a backpack, crossing the street in front of the ego car, from the right side to the left side. The driver should stop because the pedestrian is entering the vehicle's path and has right-of-way."}
{"id": "train_07353", "split": "train", "clip_key": "titan_clip_1265_000264_movie", "source": {"subset": "titan", "scenario": "clip_1265", "frame": "000264"}, "frames": ["titan_clip_1265_000264_movie_t-3.jpg", "titan_clip_1265_000264_movie_t-2.jpg", "titan_clip_1265_000264_movie_t-1.jpg", "titan_clip_1265_000264_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban backstreet with no centerline runs between buildings, the pavement is smooth, and traffic is light but slow due to tight space. Ahead in the ego lane, a cycle rickshaw moves slowly and occupies most of the width, constraining the ego vehicle's pace. To its right, two pedestrians walk along the curb near trash bins, further narrowing the passage. On the left side of the road, a cyclist wearing a brown shirt and cap rides toward the ego car along the edge, potentially entering the ego lane. Storefronts and a few parked bicycles line the left sidewalk, and no salient signals or posted speeds are visible.", "hazard_reasoning": "There is a cyclist wearing a brown shirt and cap, cycling on the left side of the road, towards the ego car. Slow down to provide clearance for the approaching cyclist and prevent a collision."}
{"id": "train_07354", "split": "train", "clip_key": "2020-0131-135401_062264_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "062264"}, "frames": ["2020-0131-135401_062264_movie_t-3.jpg", "2020-0131-135401_062264_movie_t-2.jpg", "2020-0131-135401_062264_movie_t-1.jpg", "2020-0131-135401_062264_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth dry pavement carries moderate same-direction traffic. Lane markings are clear with no physical median visible. A small white van ahead in the ego lane is slowing, constraining our pace. In the adjacent right lane, a silver van continues steadily and passes the slowing vehicle. Farther ahead in the far-right lane, a dark minivan maintains speed and moves away. Sidewalks and closely spaced buildings line both sides, and no pedestrians or hazards enter the roadway.", "hazard_reasoning": "There is a white van slowing in the ego lane. The sudden deceleration ahead could lead to a collision if the driver does not reduce speed."}
{"id": "train_07355", "split": "train", "clip_key": "2020-0214-102601_083007_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "083007"}, "frames": ["2020-0214-102601_083007_movie_t-3.jpg", "2020-0214-102601_083007_movie_t-2.jpg", "2020-0214-102601_083007_movie_t-1.jpg", "2020-0214-102601_083007_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction runs between raised curbs and sidewalks; the pavement is smooth and overall flow is slow. A black mid-SUV ahead in the ego lane is slowing because a truck further ahead is also slowing, so the ego vehicle follows at a reduced pace. An oncoming black sedan proceeds in its lane to the right of the center line at low speed as it passes the queued vehicles, creating tight clearance. A man walks along the right sidewalk toward the camera, separated from traffic by the curb.", "hazard_reasoning": "There is a black mid-suv slowing in the ego lane because a truck is slowing ahead, in front of the ego car. This sudden slowdown increases collision risk, so you should reduce speed to maintain a safe following distance."}
{"id": "train_07356", "split": "train", "clip_key": "titan_clip_1073_000402_movie", "source": {"subset": "titan", "scenario": "clip_1073", "frame": "000402"}, "frames": ["titan_clip_1073_000402_movie_t-3.jpg", "titan_clip_1073_000402_movie_t-2.jpg", "titan_clip_1073_000402_movie_t-1.jpg", "titan_clip_1073_000402_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban neighborhood street curves gently right, a narrow two-way road with one lane each direction, no median, and smooth asphalt; traffic is light. Ahead on the right, a white van is parked at the curb on the oncoming side, reducing the available width as the road bends. On the left foreground beside a shop, two pedestrians stand at the curb close to the ego lane. Farther ahead near the van, a pedestrian walks from the right sidewalk toward the left, crossing the roadway in front of the ego vehicle.", "hazard_reasoning": "There is a white van parked on the right side of the road. This blocks part of the driving lane and may require the driver to adjust their path, so they should carefully manoeuvre."}
{"id": "train_07357", "split": "train", "clip_key": "2020-0207-151349_030656_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "030656"}, "frames": ["2020-0207-151349_030656_movie_t-3.jpg", "2020-0207-151349_030656_movie_t-2.jpg", "2020-0207-151349_030656_movie_t-1.jpg", "2020-0207-151349_030656_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban multi-lane arterial runs under an elevated structure with smooth pavement; two same-direction lanes are visible and traffic is heavy and mostly stopped. Directly ahead in the ego lane, a gray box truck is stopped because of congestion ahead, blocking the ego car's path. In the adjacent right lane, a yellow taxi is also stopped slightly ahead, limiting any rightward lane change. Along the left edge ahead, a white SUV creeps forward from a narrow side lane toward the roadway and may merge into the ego lane.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid collision with the halted truck."}
{"id": "train_07358", "split": "train", "clip_key": "titan_clip_1329_000384_movie", "source": {"subset": "titan", "scenario": "clip_1329", "frame": "000384"}, "frames": ["titan_clip_1329_000384_movie_t-3.jpg", "titan_clip_1329_000384_movie_t-2.jpg", "titan_clip_1329_000384_movie_t-1.jpg", "titan_clip_1329_000384_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban side street with no centerline forms a two-way road between low-rise buildings; the pavement looks smooth and dry and traffic is light. A blue truck is parked on the right while unloading, with a worker at its rear and a flat cart and crates protruding into the roadway, narrowing the usable lane. Ahead in the ego path, a cyclist rides away near the center at a modest pace, occupying the lane. A white van remains parked behind the truck on the right, and several bicycles line the left storefronts, adding roadside clutter but staying stationary.", "hazard_reasoning": "There is a blue truck parked on the right side of the road because it is unloading. The parked truck partially obstructs the lane, requiring careful manoeuvre to avoid collision."}
{"id": "train_07359", "split": "train", "clip_key": "2020-0226-101332_038669_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "038669"}, "frames": ["2020-0226-101332_038669_movie_t-3.jpg", "2020-0226-101332_038669_movie_t-2.jpg", "2020-0226-101332_038669_movie_t-1.jpg", "2020-0226-101332_038669_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with a central fenced median runs between tall office buildings; the pavement looks dry and traffic is heavy as vehicles queue at a signalized intersection. A black hatchback directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the left adjacent lane, several white vans and cars queue and creep forward alongside, limiting any chance to change lanes. Farther ahead in the same lane, a white van also waits, showing the line extends toward the junction. Across the median to the right, oncoming traffic flows slowly through the cross street. Overhead signals facing the ego direction display solid red, with road direction boards above.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, because of the red traffic lights. The black hatchback is stationary at the red signal, so you should stop to maintain safe following distance and avoid a collision."}
{"id": "train_07360", "split": "train", "clip_key": "titan_clip_239_000492_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_239_000492_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_239_000492_movie_t-3_augB1.jpg", "titan_clip_239_000492_movie_t-2_augB1.jpg", "titan_clip_239_000492_movie_t-1_augB1.jpg", "titan_clip_239_000492_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban side street with a single unmarked lane runs between tall buildings; the pavement is clean and dry and traffic is very light with no oncoming vehicles. Ahead in the middle of the road, a pedestrian wearing a black T-shirt and black pants pushes a handcart away from the ego car, occupying the lane and setting the pace. Slightly ahead to the right, another pedestrian in a white shirt walks toward the ego vehicle near the curb, reducing available space. A black van stands on the right with its rear hatch open, partially blocking the roadway and further narrowing the path.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, black pants, pushing a cart, and walking away from the ego car in the middle of the road. The pedestrian's presence in the roadway limits available space and increases collision risk, so the driver should carefully manoeuvre around them to maintain safety."}
{"id": "train_07361", "split": "train", "clip_key": "2020-0131-135401_014886_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "014886"}, "frames": ["2020-0131-135401_014886_movie_t-3.jpg", "2020-0131-135401_014886_movie_t-2.jpg", "2020-0131-135401_014886_movie_t-1.jpg", "2020-0131-135401_014886_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction and no median runs on smooth pavement with light traffic as the scene approaches a signalized intersection. Ahead in the ego lane, a black SUV slows and stops for a red light, setting the pace for the ego vehicle. In the opposite lane, a few cars approach steadily without lane changes. On the near right, a bicyclist rides forward along the curb past parked vehicles, staying near the edge. Two small trucks are stopped at the right curb just ahead, narrowing the shoulder.", "hazard_reasoning": "There's a black SUV stopping in front of the ego car, in the ego lane, because of a red traffic light. You should slow down to avoid a potential rear-end collision due to its sudden stop."}
{"id": "train_07362", "split": "train", "clip_key": "2020-0226-140503_080091_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "080091"}, "frames": ["2020-0226-140503_080091_movie_t-3.jpg", "2020-0226-140503_080091_movie_t-2.jpg", "2020-0226-140503_080091_movie_t-1.jpg", "2020-0226-140503_080091_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs between tall buildings with no physical median; the pavement is smooth and slightly damp, and traffic in the ego's direction is heavy and mostly stopped while oncoming flow is light to moderate. Immediately ahead in the ego lane, a white car is stopped because of congestion, holding the ego vehicle. Farther ahead in the same lane, a white box truck remains stationary with other queued cars, further constraining progress. Oncoming traffic to the right, including a silver minivan, proceeds toward the camera in its own lanes and does not interact with the queue. A signalized intersection is visible ahead.", "hazard_reasoning": "There is a white SUV stopped in the ego lane, because of traffic congestion ahead. The driver must stop to maintain a safe following distance and avoid a rear-end collision under these conditions."}
{"id": "train_07363", "split": "train", "clip_key": "2020-0225-102455_021720_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_021720_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_021720_movie_t-3_augB1.jpg", "2020-0225-102455_021720_movie_t-2_augB1.jpg", "2020-0225-102455_021720_movie_t-1_augB1.jpg", "2020-0225-102455_021720_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "be cautious of lane-changing vehicle", "environment_perception": "An urban two-way street with a single narrow lane each way curves right; the pavement looks sound and traffic is heavy and slow. A silver sedan just ahead to the right cuts into the ego lane from the right and slows, taking the gap and setting the ego car's pace. Farther ahead in the same lane a black minivan is stopped near the curve, contributing to the queue. In the oncoming lane to the right, several cars are lined up and mostly stationary. Two pedestrians stand on the right sidewalk beside the zebra crossing, waiting. A pedestrian crossing sign and no-stopping signs are posted on roadside poles.", "hazard_reasoning": "There is a silver sedan in front of the ego car, cutting in to the ego lane from the right hand side. The sedan's unexpected lane change could lead to a conflict, so the driver should be cautious in this situation."}
{"id": "train_07364", "split": "train", "clip_key": "titan_clip_601_000486_movie", "source": {"subset": "titan", "scenario": "clip_601", "frame": "000486"}, "frames": ["titan_clip_601_000486_movie_t-3.jpg", "titan_clip_601_000486_movie_t-2.jpg", "titan_clip_601_000486_movie_t-1.jpg", "titan_clip_601_000486_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop for crossing pedestrian", "environment_perception": "A narrow urban two-way street meets a small lane at an intersection, with no center line and smooth pavement; traffic is light with no moving vehicles. A backpacked, cap-wearing pedestrian crosses the intersection from left to right directly ahead of the ego-vehicle, moving through the ego lane and constraining its pace. Another pedestrian stands at the left corner and steps slightly into the roadway near the ego path. A yellow school-zone warning sign is mounted on the left-side building, and a convex traffic mirror is fixed on the right corner. Cones and small barricades line the curbs.", "hazard_reasoning": "There is a pedestrian carrying a backpack, wearing a cap, and crossing from the left side to the right side of the intersection in front of the ego-car. The pedestrian is entering the vehicle's path at an intersection, so the driver needs to stop immediately to prevent a collision."}
{"id": "train_07365", "split": "train", "clip_key": "2020-0129-144857_062486_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "062486"}, "frames": ["2020-0129-144857_062486_movie_t-3.jpg", "2020-0129-144857_062486_movie_t-2.jpg", "2020-0129-144857_062486_movie_t-1.jpg", "2020-0129-144857_062486_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of slowing bus ahead", "environment_perception": "An elevated urban expressway in a city setting carries traffic on smooth asphalt, with two same-direction lanes on the ego side and a low concrete divider splitting off additional parallel lanes; flow is moderate and mostly steady. Ahead to the left, a green bus in the left lane slows, decreasing its gap to traffic and pacing vehicles nearby. A small white car travels directly ahead in the ego lane at a steady speed, following a box truck farther up the lane and effectively setting our pace. In the lanes beyond the divider to the right, several cars continue forward parallel to us without interacting with our path. No signals or notable signs are visible, and there are no obvious hazards.", "hazard_reasoning": "There is a green bus slowing down in the left lane. The bus's deceleration may require sudden speed adjustment, so the driver should stay attentive and be prepared for changes in traffic flow."}
{"id": "train_07366", "split": "train", "clip_key": "2020-0131-103016_085381_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "085381"}, "frames": ["2020-0131-103016_085381_movie_t-3.jpg", "2020-0131-103016_085381_movie_t-2.jpg", "2020-0131-103016_085381_movie_t-1.jpg", "2020-0131-103016_085381_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial carries moderate, smoothly moving traffic on dry, well?arked pavement without a physical median. The ego vehicle proceeds in the leftmost same-direction lane beside a curb and guardrail. A small white van ahead in the ego lane continues straight and gradually pulls away from the ego car, loosely setting the pace. A larger white van runs slightly ahead in the adjacent right lane, overtaking while maintaining its lane. Farther ahead, a gray van in the right lane also travels straight and remains parallel to the ego lane. Mid-rise buildings and sidewalks line the street, and no pedestrians, cyclists, or obstacles are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07367", "split": "train", "clip_key": "2020-0207-101955_018057_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "018057"}, "frames": ["2020-0207-101955_018057_movie_t-3.jpg", "2020-0207-101955_018057_movie_t-2.jpg", "2020-0207-101955_018057_movie_t-1.jpg", "2020-0207-101955_018057_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction and a painted double center line runs between mid-rise buildings; the pavement is dry and smooth and traffic is moderate with steady flow. Directly ahead in the ego lane, a small brown canvas-covered truck slows and constrains the ego car's pace. In the adjacent left lane, a large silver box truck travels alongside and then edges ahead while staying clear of the ego path. Farther ahead in the same direction, a flatbed truck carrying machinery moves slowly and contributes to the queue. On the right, oncoming vehicles flow in their lanes without encroaching.", "hazard_reasoning": "There is a brown truck slowing down in front of the ego car. This slowdown indicates that the vehicle ahead is reducing speed, so the driver should slow down to maintain a safe following distance and avoid potential rear-end collision."}
{"id": "train_07368", "split": "train", "clip_key": "titan_clip_1344_000030_movie", "source": {"subset": "titan", "scenario": "clip_1344", "frame": "000030"}, "frames": ["titan_clip_1344_000030_movie_t-3.jpg", "titan_clip_1344_000030_movie_t-2.jpg", "titan_clip_1344_000030_movie_t-1.jpg", "titan_clip_1344_000030_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on left sidewalk.", "environment_perception": "An urban two-way street with one narrow lane each way runs under trees past shops; the pavement is smooth with a double yellow divider, and traffic is light and slow due to many parked vans. Ahead in the ego lane, a small white truck pulls out from the left curb and continues forward, briefly setting the pace. On the right edge, a pedestrian wearing black pants and a white shirt walks along the curb toward the ego vehicle, remaining outside the lane. A large 20 speed marking is painted on the roadway.", "hazard_reasoning": "A pedestrian wearing black pants and a white shirt is walking along the left side of the road, away from the ego car. The pedestrian may step into the roadway unexpectedly, so the driver should be cautious."}
{"id": "train_07369", "split": "train", "clip_key": "2020-0213-143552_040079_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_040079_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_040079_movie_t-3_augB1.jpg", "2020-0213-143552_040079_movie_t-2_augB1.jpg", "2020-0213-143552_040079_movie_t-1_augB1.jpg", "2020-0213-143552_040079_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow", "environment_perception": "In an urban corridor beneath an elevated structure, the ego vehicle travels on a multi-lane road with a straight-through lane and a dedicated right-turn lane; the pavement is smooth and traffic is moderate. A large white box truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. A silver sedan to the right moves forward in the right-turn-only lane alongside the ego vehicle and does not enter the ego lane. On the left sidewalk, several pedestrians stand and walk near the curb by a side street, remaining off the roadway. Lane arrows indicate the center lane continues straight while the right lane is for turning right.", "hazard_reasoning": "There is a white truck slowing in the ego lane. Because the truck is reducing speed, it may require the ego vehicle to brake suddenly, so the driver should slow down to maintain a safe following distance."}
{"id": "train_07370", "split": "train", "clip_key": "titan_clip_484_000174_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_484_000174_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_484_000174_movie_t-3_augB1.jpg", "titan_clip_484_000174_movie_t-2_augB1.jpg", "titan_clip_484_000174_movie_t-1_augB1.jpg", "titan_clip_484_000174_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist approaching ahead.", "environment_perception": "An urban commercial street with a narrow two-way road, single lane each direction, no median, and smooth pavement; traffic flow is light. Ahead near the centerline, a cyclist wearing a blue shirt rides toward the ego vehicle on the right side of the road, closing in on the ego path and reducing space. On the right edge just beyond, a white van faces the ego direction and waits in the oncoming lane, further narrowing the corridor. From the right sidewalk a man steps into the roadway and walks diagonally toward the center, potentially entering the ego lane. Farther ahead in the ego lane, a scooter moves away at low speed, modestly affecting pace. Parked cars line the left curb and pedestrians stand near shop fronts, adding roadside clutter.", "hazard_reasoning": "A cyclist wearing a blue shirt and cycling on the right side of the road and towards the ego car. Be aware of the cyclist approaching ahead to avoid entering their path."}
{"id": "train_07371", "split": "train", "clip_key": "2020-0228-102841_031354_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "031354"}, "frames": ["2020-0228-102841_031354_movie_t-3.jpg", "2020-0228-102841_031354_movie_t-2.jpg", "2020-0228-102841_031354_movie_t-1.jpg", "2020-0228-102841_031354_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to crossing pedestrian", "environment_perception": "An urban scene shows the ego vehicle approaching a single-lane road that ends at a wider cross street with a marked zebra crosswalk; there is no median, the asphalt is smooth, and traffic on the cross street is light. Ahead at the crosswalk, a pedestrian carrying a handbag holds a child's hand and crosses from left to right across the ego lane at a steady walk, occupying the path and constraining progress. On the right side of the cross street, a white sedan is stopped at the crosswalk yielding to them. Two pedestrians stand on the right curb by the guardrail, waiting at the crosswalk. Construction fencing lines the left sidewalk.", "hazard_reasoning": "There is a pedestrian carrying a handbag, holding a child's hand, and crossing the street, from the left side to the right side, ahead at the crosswalk. The driver should yield because pedestrians have the right of way at marked crosswalks and may step into the vehicle's path."}
{"id": "train_07372", "split": "train", "clip_key": "titan_clip_1053_000336_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1053_000336_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1053_000336_movie_t-3_augB1.jpg", "titan_clip_1053_000336_movie_t-2_augB1.jpg", "titan_clip_1053_000336_movie_t-1_augB1.jpg", "titan_clip_1053_000336_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban back street with smooth pavement and no centerline forms a narrow two-way road with light traffic. A dark minivan ahead in the ego lane moves slowly near mid-block, effectively setting the pace. A pedestrian wearing black pants and pushing a trolley is crossing in the middle of the road from left to right ahead, entering the ego lane and drawing the lead vehicle's attention. Parked vehicles and driveway entrances along the right side slightly narrow the usable roadway.", "hazard_reasoning": "A pedestrian wearing black pants and pushing a trolley is crossing in the middle of the road to the right side. The driver should slow down to yield to the pedestrian and avoid a collision."}
{"id": "train_07373", "split": "train", "clip_key": "titan_clip_1255_000372_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1255_000372_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1255_000372_movie_t-3_augB1.jpg", "titan_clip_1255_000372_movie_t-2_augB1.jpg", "titan_clip_1255_000372_movie_t-1_augB1.jpg", "titan_clip_1255_000372_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban residential two-way street with single narrow lanes and no median runs ahead on dry, slightly worn pavement, and traffic is light as the road bends gently right. A cyclist in a pink T-shirt approaches from ahead in the opposing direction, riding near the middle of the roadway because there is no bike lane, creating limited lateral space with the ego lane. Farther ahead, a small oncoming car proceeds toward the camera in its lane without slowing. On the right, a pedestrian walks along the sidewalk beside a row of parked cars, remaining off the roadway. Numerous parked vehicles line the right edge, slightly narrowing the usable lane.", "hazard_reasoning": "There is a cyclist wearing a pink t-shirt, cycling toward in front of, and towards the ego car, because there is no bike lane. You should manoeuvre carefully around the cyclist to maintain safe distance and avoid collision due to unpredictable movement."}
{"id": "train_07374", "split": "train", "clip_key": "2020-0213-143552_043875_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "043875"}, "frames": ["2020-0213-143552_043875_movie_t-3.jpg", "2020-0213-143552_043875_movie_t-2.jpg", "2020-0213-143552_043875_movie_t-1.jpg", "2020-0213-143552_043875_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street lined with mid-rise buildings has smooth pavement and a low concrete median separating directions, and traffic is light. A white box truck directly ahead in the ego lane moves forward and gradually pulls away because the road ahead is clear. Beyond the median to the right, a small truck travels in the oncoming direction and passes without interaction. A pedestrian footbridge spans the roadway.", "hazard_reasoning": "There is a white truck driving away from the ego car, in the ego lane, because the road ahead is clear. The green traffic light ahead may change, so the driver should follow the vehicle ahead to anticipate any changes and maintain a safe distance."}
{"id": "train_07375", "split": "train", "clip_key": "titan_clip_1218_000390_movie", "source": {"subset": "titan", "scenario": "clip_1218", "frame": "000390"}, "frames": ["titan_clip_1218_000390_movie_t-3.jpg", "titan_clip_1218_000390_movie_t-2.jpg", "titan_clip_1218_000390_movie_t-1.jpg", "titan_clip_1218_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street forms a single shared lane with smooth dry pavement and light vehicle traffic as the ego car proceeds slowly. Ahead on the left, a pedestrian in a white shirt walks away in the roadway to get around a parked light truck, which occupies part of the lane and reduces the available space. Farther ahead near the middle of the lane, another pedestrian also walks away in the same direction, remaining in the ego path. On the right edge by storefronts, a woman walks toward the camera along the raised curb close to the roadway. The parked truck creates a pinch point.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the left side of the road, away from the ego car, because of a parked vehicle. The obstructed view caused by the parked truck increases the risk of the pedestrian entering the driving lane unexpectedly, so the driver should slow down to maintain safe stopping distance."}
{"id": "train_07376", "split": "train", "clip_key": "2020-0214-145407_020368_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "020368"}, "frames": ["2020-0214-145407_020368_movie_t-3.jpg", "2020-0214-145407_020368_movie_t-2.jpg", "2020-0214-145407_020368_movie_t-1.jpg", "2020-0214-145407_020368_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban three-lane road with smooth pavement carries heavy traffic that is mostly stopped. A black car directly ahead in the ego lane is stopped, holding the ego vehicle at a standstill. Farther ahead in the same lane, a large white box truck remains stationary in the queue and blocks the forward view. In the left lane ahead, a dump truck is also stopped, preventing an easy pass, while vehicles in the right lane, including a white sedan alongside, creep forward with minimal gaps.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. Since the SUV is halted at the red signal, the driver must stop to avoid a collision and comply with traffic rules."}
{"id": "train_07377", "split": "train", "clip_key": "2020-0220-102630_026495_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "026495"}, "frames": ["2020-0220-102630_026495_movie_t-3.jpg", "2020-0220-102630_026495_movie_t-2.jpg", "2020-0220-102630_026495_movie_t-1.jpg", "2020-0220-102630_026495_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane road with no median and smooth pavement is lined by buildings and railings, and traffic is momentarily stopped. A large white box truck is directly ahead in the left ego lane, stopped and blocking the path. Beside it, a tarp-covered truck in the adjacent right lane waits slightly ahead, narrowing the space and constraining any lane change around the obstruction.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The driver should stop to avoid colliding with the halted truck."}
{"id": "train_07378", "split": "train", "clip_key": "2020-0227-104226_024073_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "024073"}, "frames": ["2020-0227-104226_024073_movie_t-3.jpg", "2020-0227-104226_024073_movie_t-2.jpg", "2020-0227-104226_024073_movie_t-1.jpg", "2020-0227-104226_024073_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs beneath an elevated expressway, with two lanes in the ego direction bounded by guardrails and smooth pavement; traffic moves at a moderate, steady pace. A white van ahead in the ego lane moves away gradually because the flow ahead is pulling it along. To its left, a blue box truck travels parallel in the adjacent lane, keeping a similar speed and limiting overtaking space. In the separated lanes beyond the right-side barrier, several cars proceed steadily in the same direction without interacting with the ego lane. Overhead blue directional signs span the roadway, and bridge columns line the right edge, but no hazards or unusual obstacles appear.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car, because of traffic moving ahead. Therefore, follow the vehicle ahead to maintain a safe distance and adapt to the slow-moving traffic."}
{"id": "train_07379", "split": "train", "clip_key": "titan_clip_1227_000162_movie", "source": {"subset": "titan", "scenario": "clip_1227", "frame": "000162"}, "frames": ["titan_clip_1227_000162_movie_t-3.jpg", "titan_clip_1227_000162_movie_t-2.jpg", "titan_clip_1227_000162_movie_t-1.jpg", "titan_clip_1227_000162_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban back street with a single usable lane curves gently right, with worn pavement and green edge strips; cones and nose-in parked vans pinch the right margin. Traffic is light, and a couple of small delivery trucks stand ahead in the same direction. A pedestrian in a black shirt carrying a handbag walks away from the ego in the middle of the road amid crowded sidewalks, occupying the lane and dictating a slow approach. On the left near the curb, two pedestrians walk toward the ego, staying close to the edge but within the roadway. Farther ahead near the trucks, several people walk along the street beside the vehicles, creating a narrow passing gap, while a white van sits on a sloped driveway at the right.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a handbag, walking in the middle of the road, away from the ego car, because the sidewalk is crowded. The driver should slow down to avoid a potential collision with the pedestrian crossing in the lane."}
{"id": "train_07380", "split": "train", "clip_key": "titan_clip_381_000534_movie", "source": {"subset": "titan", "scenario": "clip_381", "frame": "000534"}, "frames": ["titan_clip_381_000534_movie_t-3.jpg", "titan_clip_381_000534_movie_t-2.jpg", "titan_clip_381_000534_movie_t-1.jpg", "titan_clip_381_000534_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian movement", "environment_perception": "A narrow urban commercial street with interlocking pavers forms a single shared lane without a divider, and vehicular flow is very light while foot traffic is steady; the ego car advances slowly past storefronts. On the right side near the curb, a pedestrian in a white shirt walks away from the ego vehicle along the roadway edge and could drift into the lane. On the left foreground, two pedestrians by the curb, one pulling luggage, move near the lane and momentarily occupy the ego path as they proceed along the street. A black minivan is stopped at the left curb ahead, effectively narrowing the lane and constraining the ego car's speed. Signboards and cones line the right sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the right side of the road, away from the ego car. The driver should be aware of this pedestrian's presence and movement to anticipate any potential crossing or unexpected maneuvers."}
{"id": "train_07381", "split": "train", "clip_key": "2020-0210-101957_012826_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "012826"}, "frames": ["2020-0210-101957_012826_movie_t-3.jpg", "2020-0210-101957_012826_movie_t-2.jpg", "2020-0210-101957_012826_movie_t-1.jpg", "2020-0210-101957_012826_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the merging vehicle", "environment_perception": "An urban intersection with smooth pavement and a wide zebra crossing comes into view on a two-lane road, and traffic is light. The ego vehicle is stopped as the signal ahead shows red. A red van ahead and slightly right moves left across the junction through the crosswalk, passing in front of the ego path and temporarily dictating when the ego can go. A black taxi on the far right waits at the stop line on the far side of the intersection. A pedestrian near the left-side station entrance approaches the curb but stays waiting under a red pedestrian light.", "hazard_reasoning": "There is a red van maneuvering in the left lane, away from the ego car, because of a parked vehicle. The van may merge unpredictably, so the driver should be aware of potential lane changes ahead."}
{"id": "train_07382", "split": "train", "clip_key": "2020-0210-155354_006799_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "006799"}, "frames": ["2020-0210-155354_006799_movie_t-3.jpg", "2020-0210-155354_006799_movie_t-2.jpg", "2020-0210-155354_006799_movie_t-1.jpg", "2020-0210-155354_006799_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street passes under a railway overpass, with one lane per direction, no median, and smooth pavement; traffic is moderate as vehicles queue at a signal. A white mid-size SUV directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. To the right of the queue, a bicyclist just ahead rides forward along the curb, overtaking on the right toward the intersection. In the opposite lane under the bridge, oncoming cyclists move toward the camera, staying to their side. A red traffic signal ahead controls the junction, and overhead the bridge carries low-clearance warnings and striped guard bars.", "hazard_reasoning": "There is a white mid-SUV stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid a collision with the halted vehicle and comply with the traffic signal."}
{"id": "train_07383", "split": "train", "clip_key": "2020-0228-102841_046805_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "046805"}, "frames": ["2020-0228-102841_046805_movie_t-3.jpg", "2020-0228-102841_046805_movie_t-2.jpg", "2020-0228-102841_046805_movie_t-1.jpg", "2020-0228-102841_046805_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to pedestrians crossing the intersection", "environment_perception": "An urban two-lane road in Japan approaches a signalized intersection under clear daylight, with dry, well-marked pavement and light traffic. A gray van directly ahead in the ego lane is stopped near the intersection, yielding to pedestrians crossing in front, so it temporarily blocks the ego vehicle's path. A white van in the adjacent right lane moves ahead in the same direction and continues through the intersection past the stopping point. Several pedestrians on the left enter and traverse the crosswalk toward the far side, which dictates the pace near the stop line. No oncoming traffic is involved in this scene.", "hazard_reasoning": "There is a gray van stopped near the intersection, in the ego lane, because of pedestrians crossing ahead at the intersection. Drivers should yield to the crossing pedestrians to prevent a collision."}
{"id": "train_07384", "split": "train", "clip_key": "titan_clip_698_000306_movie", "source": {"subset": "titan", "scenario": "clip_698", "frame": "000306"}, "frames": ["titan_clip_698_000306_movie_t-3.jpg", "titan_clip_698_000306_movie_t-2.jpg", "titan_clip_698_000306_movie_t-1.jpg", "titan_clip_698_000306_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban narrow two-way street with no marked centerline runs between storefronts; the smooth asphalt lacks a divider and traffic is light. The ego vehicle proceeds along the left side. Straight ahead in the center of the road, two pedestrians push a stroller toward the ego vehicle, walking in the middle where there is no crosswalk, and they block the ego path. Farther ahead at the left edge, a lone pedestrian walks away along the curb close to the travel lane. On the right side ahead, a small blue car stands parked at the curb, reducing available width.", "hazard_reasoning": "There are two pedestrians, pushing a stroller, walking in the middle of the road, towards the ego car, because there is no crosswalk. The driver should stop to avoid colliding with pedestrians crossing at an unmarked location."}
{"id": "train_07385", "split": "train", "clip_key": "2020-0213-143552_009672_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009672"}, "frames": ["2020-0213-143552_009672_movie_t-3.jpg", "2020-0213-143552_009672_movie_t-2.jpg", "2020-0213-143552_009672_movie_t-1.jpg", "2020-0213-143552_009672_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cones.", "environment_perception": "An urban two-way street with one lane each direction runs between mid-rise buildings; the pavement is smooth and traffic is light to moderate. Orange traffic cones line the right side of the ego lane around a small temporary sign, narrowing the center and separating it from oncoming traffic. A dark hatchback ahead in the ego lane proceeds straight at a steady speed, mildly constraining the ego vehicle's pace. To the right, an oncoming silver sedan advances in its lane past the cones, remaining close to the center. Farther right, an oncoming white truck follows the sedan and continues straight in its lane as it passes the coned area.", "hazard_reasoning": "There are orange traffic cones along the right side of the lane. These cones signal a potential lane restriction or upcoming construction area, so the driver should monitor the lane boundary to avoid drifting into the blocked section."}
{"id": "train_07386", "split": "train", "clip_key": "2020-0204-103442_054271_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "054271"}, "frames": ["2020-0204-103442_054271_movie_t-3.jpg", "2020-0204-103442_054271_movie_t-2.jpg", "2020-0204-103442_054271_movie_t-1.jpg", "2020-0204-103442_054271_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two lanes in the ego direction and oncoming lanes to the right runs past shops and a car dealership; the pavement is dry and traffic is heavy, mostly creeping or stopped. A black sedan directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle. In the adjacent right same-direction lane, a black minivan slightly ahead crawls with the queue and constrains any lane-change option. In the rightmost oncoming lane, a white car travels toward the viewer at a steady pace, separated from the ego side by painted center lines.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. You should stop to maintain a safe following distance and avoid collision with the stopped vehicle.\\n"}
{"id": "train_07387", "split": "train", "clip_key": "2020-0210-101957_051174_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "051174"}, "frames": ["2020-0210-101957_051174_movie_t-3.jpg", "2020-0210-101957_051174_movie_t-2.jpg", "2020-0210-101957_051174_movie_t-1.jpg", "2020-0210-101957_051174_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth, dry pavement shows heavy, slow traffic, with a chevron-marked buffer and a busy curb-side lane to the right. A black sedan directly ahead in the ego lane slows for congestion and sets the ego car's pace. A large white box truck runs slightly ahead to the left in the adjacent lane, continuing straight and limiting a leftward lane change. Along the right, a line of delivery trucks and small vans is mostly stationary in the curb-side lane beside the buffer, blocking any move to the right. An overhead electronic sign spans the roadway as the flow compresses toward the distance.", "hazard_reasoning": "There's a black sedan slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The sedan's decreased speed signals a buildup of vehicles ahead, so the driver should reduce speed to maintain a safe following distance under these conditions."}
{"id": "train_07388", "split": "train", "clip_key": "2020-0214-102601_021792_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "021792"}, "frames": ["2020-0214-102601_021792_movie_t-3.jpg", "2020-0214-102601_021792_movie_t-2.jpg", "2020-0214-102601_021792_movie_t-1.jpg", "2020-0214-102601_021792_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes runs through dense midrise buildings; the pavement is smooth and a guardrailed median separates oncoming lanes to the right, while a red-painted lane lies to the left. Traffic is moderate and moving toward a signalized intersection. A blue truck directly ahead in the ego lane slows because the traffic light ahead is red, so it governs the ego vehicle's pace. A black car slightly ahead in the lane to the left continues straight and eases off as it nears the intersection. On the opposite side of the median, an oncoming white truck and other vehicles pass to the right, fully divided from the ego's path.", "hazard_reasoning": "There's a blue truck slowing down in the ego lane, because of red traffic lights ahead. Driver should stop to maintain a safe following distance and comply with the red light."}
{"id": "train_07389", "split": "train", "clip_key": "titan_clip_296_000420_movie", "source": {"subset": "titan", "scenario": "clip_296", "frame": "000420"}, "frames": ["titan_clip_296_000420_movie_t-3.jpg", "titan_clip_296_000420_movie_t-2.jpg", "titan_clip_296_000420_movie_t-1.jpg", "titan_clip_296_000420_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban residential street with closely spaced buildings lacks lane markings or a median, the asphalt appears smooth, and traffic is light with no moving vehicles visible. A dark van is parked ahead along the left edge of the roadway, protruding slightly and reducing clearance in the ego path. On the right in the foreground, a silver minivan sits stationary in an open garage bay close to the curb, tightening the right margin. Farther up the left curb, several bicycles and a scooter are parked against the wall, adding roadside clutter near the travel line. No traffic signals or posted limits are evident, and no pedestrians or oncoming cars appear.", "hazard_reasoning": "No immediate hazards are present; however, the garage door on the right could conceal vehicles exiting into the street, so maintain caution near it."}
{"id": "train_07390", "split": "train", "clip_key": "titan_clip_1050_000192_movie", "source": {"subset": "titan", "scenario": "clip_1050", "frame": "000192"}, "frames": ["titan_clip_1050_000192_movie_t-3.jpg", "titan_clip_1050_000192_movie_t-2.jpg", "titan_clip_1050_000192_movie_t-1.jpg", "titan_clip_1050_000192_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with one lane each direction has smooth pavement and light, slow traffic as a white van is stopped at the left curb ahead, narrowing the ego lane. A woman in green pants and a pink shirt carrying a handbag walks toward the ego vehicle in the ego lane to pass the parked vehicle, briefly occupying the path. Several pedestrians by the left storefront near the van edge off the sidewalk and gather at its rear, potentially entering the lane and constraining the ego car's pace. A distant car approaches in the opposite lane as oncoming traffic but remains clear. Parking signs line the street, and the stopped van creates a pinch point.", "hazard_reasoning": "There is a female pedestrian, wearing green pants and a pink shirt, carrying a handbag, walking towards the ego car, in the ego lane, because of a parked vehicle. The pedestrian is entering the driving lane to bypass the parked vehicle, so the driver should adjust course to avoid a collision."}
{"id": "train_07391", "split": "train", "clip_key": "2020-0214-102601_049455_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "049455"}, "frames": ["2020-0214-102601_049455_movie_t-3.jpg", "2020-0214-102601_049455_movie_t-2.jpg", "2020-0214-102601_049455_movie_t-1.jpg", "2020-0214-102601_049455_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban expressway runs through a semi-enclosed section with sound barriers and guardrails; the dry pavement shows chevron hatching for a merge area, and traffic is light in the ego lane but moderate on parallel right lanes. A black sedan is stopped ahead in the ego lane, directly in the vehicle's path and constraining the pace. To the right, several same-direction cars travel steadily in the separated lanes and continue straight without entering the ego lane. No salient signals or signs are visible.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane. Because the vehicle ahead has stopped, the driver must carefully manoeuvre around it to maintain a safe following distance and avoid a collision."}
{"id": "train_07392", "split": "train", "clip_key": "2020-0203-154554_067024_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "067024"}, "frames": ["2020-0203-154554_067024_movie_t-3.jpg", "2020-0203-154554_067024_movie_t-2.jpg", "2020-0203-154554_067024_movie_t-1.jpg", "2020-0203-154554_067024_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban two-way road with a single left-hand lane per direction runs between buildings, separated by a painted chevron median; the pavement looks dry and smooth, and traffic in the ego direction is heavy and slow while oncoming flow to the right moves steadily. Directly ahead in the ego lane, a white motorcycle is stopped because congestion blocks the lane, holding the ego car. Farther ahead in the same lane, a small red three-wheeled vehicle is also stopped in the queue, further constraining movement. A silver minivan stands at the left curb near the ego vehicle without moving, reducing lateral clearance.", "hazard_reasoning": "There is a white motorcycle stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop promptly to avoid colliding with the halted motorcycle under these congested conditions."}
{"id": "train_07393", "split": "train", "clip_key": "2020-0129-144857_028087_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "028087"}, "frames": ["2020-0129-144857_028087_movie_t-3.jpg", "2020-0129-144857_028087_movie_t-2.jpg", "2020-0129-144857_028087_movie_t-1.jpg", "2020-0129-144857_028087_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs under an elevated structure, with two same-direction lanes bordered by a left curb and a right metal guardrail; the dry pavement looks smooth and traffic is moderate. A black van ahead in the ego lane drives away from the ego car at a steady pace, remaining in lane and lightly setting the speed. In the adjacent left lane, a white sedan moves ahead and gradually overtakes the vehicles in the ego lane. Farther forward in that left lane, a darker car continues straight with no evident interaction. A round 50 speed-limit sign is visible on the right support, and a no-parking sign stands on the left sidewalk.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07394", "split": "train", "clip_key": "titan_clip_464_000060_movie", "source": {"subset": "titan", "scenario": "clip_464", "frame": "000060"}, "frames": ["titan_clip_464_000060_movie_t-3.jpg", "titan_clip_464_000060_movie_t-2.jpg", "titan_clip_464_000060_movie_t-1.jpg", "titan_clip_464_000060_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the stopped van", "environment_perception": "A narrow urban side street without lane markings runs between close buildings, the pavement looks uneven and patched, and overall traffic is light with no oncoming vehicles visible. A white van is stopped ahead in the ego lane with its right-side door open, blocking the path and constraining the ego car's progress. A blue truck is parked along the right edge near the foreground, remaining stationary and narrowing the available space. On the left, a construction area is screened by temporary white panels and traffic cones, further constricting the roadway.", "hazard_reasoning": "There is a white van stopped in the ego lane in front of the ego car. The stopped van blocks the driving lane ahead, requiring careful manoeuvring to avoid a collision."}
{"id": "train_07395", "split": "train", "clip_key": "2020-0127-132751_043423_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "043423"}, "frames": ["2020-0127-132751_043423_movie_t-3.jpg", "2020-0127-132751_043423_movie_t-2.jpg", "2020-0127-132751_043423_movie_t-1.jpg", "2020-0127-132751_043423_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with two lanes in each direction and a narrow raised median has dry pavement and heavy, queuing traffic. A gray sedan ahead in the ego lane is stopped for a red traffic light and blocks the ego vehicle's path. To the left, a white van in the adjacent lane stands alongside, keeping pace with the queue and limiting room to merge. Farther ahead, a blue truck in the same line creeps forward, contributing to the slowdown. A traffic signal visible down the street shows red.", "hazard_reasoning": "There is a gray Sedan, that has stopped, in front of the ego car, in the ego lane, because of the red traffic light. The driver should stop now to avoid collision with the halted vehicle at the red signal."}
{"id": "train_07396", "split": "train", "clip_key": "2020-0220-151845_057255_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "057255"}, "frames": ["2020-0220-151845_057255_movie_t-3.jpg", "2020-0220-151845_057255_movie_t-2.jpg", "2020-0220-151845_057255_movie_t-1.jpg", "2020-0220-151845_057255_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial runs under an elevated expressway, with two same-direction lanes and a metal guardrail separating oncoming lanes to the left; the pavement is dry and traffic is heavy with a slow queue in the right lane. Ahead in the ego lane, a red flatbed truck with a tarped load slows because of congestion further forward, constraining the ego car's pace. To the right, a line of cars and boxy vans crawls or sits stopped in the adjacent lane, edging forward beside the ego lane. Beyond the guardrail on the left, sparse oncoming traffic proceeds independently.", "hazard_reasoning": "There is a red truck slowing down in front of the ego car in the ego lane, because of traffic congestion ahead. The red truck's reduced speed indicates a buildup of traffic, so you should slow down to maintain a safe following distance."}
{"id": "train_07397", "split": "train", "clip_key": "2020-0220-102630_016935_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "016935"}, "frames": ["2020-0220-102630_016935_movie_t-3.jpg", "2020-0220-102630_016935_movie_t-2.jpg", "2020-0220-102630_016935_movie_t-1.jpg", "2020-0220-102630_016935_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with two same-direction lanes curves gently right on smooth pavement, and traffic is heavy but begins to roll. A white sedan directly ahead in the ego lane starts to pull away from a stop as the overhead light shows green, creating growing gap in front of the ego vehicle. In the adjacent right lane, a small white pickup slightly ahead proceeds slowly alongside, limiting an immediate lane change. Farther ahead, several vans and a tall box truck queue across both lanes and creep forward, setting the overall pace.", "hazard_reasoning": "There is a white sedan starting to drive in the ego lane, away from the ego car, because of a green traffic light. Since the traffic light has turned green and the leading sedan is accelerating into the intersection, the driver should start moving promptly to follow through safely under the flow of traffic."}
{"id": "train_07398", "split": "train", "clip_key": "titan_clip_5_000288_movie", "source": {"subset": "titan", "scenario": "clip_5", "frame": "000288"}, "frames": ["titan_clip_5_000288_movie_t-3.jpg", "titan_clip_5_000288_movie_t-2.jpg", "titan_clip_5_000288_movie_t-1.jpg", "titan_clip_5_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street with a single usable lane and block-paved surface is lined with parked vehicles on the left, and traffic moves lightly at low speeds. Ahead in the middle of the lane, a pedestrian in a blue shirt and black pants pushes a blue cart away from the ego vehicle, moving slowly and constraining the path. Farther ahead in the same direction, a white van proceeds down the street cautiously behind the pedestrian. On the right edge, two pedestrians walk along the sidewalk parallel to the lane without stepping into traffic. A red delivery truck and several white vans are stopped along the left for loading, pinching the roadway, while additional bicycles and a scooter are parked on the right.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, and pushing a blue cart away from the ego car, in the middle of the road. The driver should carefully manoeuvre to avoid colliding with the pedestrian pushing a cart directly ahead."}
{"id": "train_07399", "split": "train", "clip_key": "2020-0131-135401_008855_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008855"}, "frames": ["2020-0131-135401_008855_movie_t-3.jpg", "2020-0131-135401_008855_movie_t-2.jpg", "2020-0131-135401_008855_movie_t-1.jpg", "2020-0131-135401_008855_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "An urban two-way street with the ego traveling in the left lane has no median and smooth asphalt, and traffic is light but slows near roadside construction. A white box truck ahead in the ego lane continues straight at low speed through the narrowed section, effectively setting the pace. On the left at the near crosswalk, two pedestrians wait on the curb and watch the roadway, potentially stepping out if the signal changes. On the right shoulder a construction worker stands facing traffic and monitors vehicles beside the work zone. An overhead traffic signal shows green for the ego direction. The right side is lined with red traffic cones and barricades around parked construction trucks and excavators, reducing the usable lane width.", "hazard_reasoning": "There are red traffic cones on the right side of the ego car. These cones mark a construction zone intruding into the driving lane, so the driver should carefully manoeuvre around them to avoid collision and maintain safe travel."}
{"id": "train_07400", "split": "train", "clip_key": "2020-0203-114632_056492_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "056492"}, "frames": ["2020-0203-114632_056492_movie_t-3.jpg", "2020-0203-114632_056492_movie_t-2.jpg", "2020-0203-114632_056492_movie_t-1.jpg", "2020-0203-114632_056492_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with smooth pavement runs under an elevated structure, with two same-direction lanes and a left-side guardrail; traffic is moderate and slows near a junction. A green-and-white bus directly ahead in the ego left lane is stopped, as it waits for people on the crosswalk. Several pedestrians at the left-front corner are crossing in front of the bus, holding the lane and keeping the ego vehicle stationary. A white box truck in the adjacent right lane moves ahead through the junction, passing the stopped bus. Farther ahead beyond the intersection, vehicles continue flowing steadily.", "hazard_reasoning": "There is a green-and-white bus stopped in front of the ego car in the left lane, because of people walking on the crosswalk. The bus has stopped to let pedestrians cross, so the driver should stop to avoid colliding with the stationary bus and ensure pedestrian safety."}
{"id": "train_07401", "split": "train", "clip_key": "titan_clip_673_000150_movie", "source": {"subset": "titan", "scenario": "clip_673", "frame": "000150"}, "frames": ["titan_clip_673_000150_movie_t-3.jpg", "titan_clip_673_000150_movie_t-2.jpg", "titan_clip_673_000150_movie_t-1.jpg", "titan_clip_673_000150_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "An urban neighborhood scene shows a narrow two-way local street without a centerline leading to a railway level crossing; the asphalt is worn with faded markings and traffic is light. A bicyclist ahead in the middle of the lane rides slowly toward the tracks, effectively controlling the pace. A person stands on the left by the fence next to the crossing equipment, remaining at the edge of the carriageway. The crossing's crossbucks and lights are visible, and the level cross barrier on the left side of the road is being lifted as the approach opens. A car covered with a tarp is parked on the right beside a building, narrowing the roadside but not intruding into the lane.", "hazard_reasoning": "There is a level cross barrier on the left side of the road that is being lifted. The barrier's movement indicates an active railway crossing which may close again or have approaching trains, so the driver should start moving only after the barrier is fully raised and the signal is clear."}
{"id": "train_07402", "split": "train", "clip_key": "titan_clip_1354_000564_movie", "source": {"subset": "titan", "scenario": "clip_1354", "frame": "000564"}, "frames": ["titan_clip_1354_000564_movie_t-3.jpg", "titan_clip_1354_000564_movie_t-2.jpg", "titan_clip_1354_000564_movie_t-1.jpg", "titan_clip_1354_000564_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van", "environment_perception": "A narrow urban residential two-way street with no centerline or median has smooth pavement and light traffic. Far ahead in the ego lane, a small van continues straight in the same direction. On the right side of the road near the greenery, a white van is parked. On the right sidewalk, a pedestrian walks along past a driveway close to the curb near the parked vehicles. Several other cars sit in a recessed parking area on the right, and the travel lane ahead remains unobstructed.", "hazard_reasoning": "There is a white van parked on the right side of the road. The driver should carefully manoeuvre around it to avoid a collision with the stationary vehicle."}
{"id": "train_07403", "split": "train", "clip_key": "2020-0210-155354_040744_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "040744"}, "frames": ["2020-0210-155354_040744_movie_t-3.jpg", "2020-0210-155354_040744_movie_t-2.jpg", "2020-0210-155354_040744_movie_t-1.jpg", "2020-0210-155354_040744_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban boulevard with two lanes in each direction is separated by a wide painted median, and the dry pavement appears smooth with moderate overall flow; oncoming traffic moves on the far-right carriageway. A gray van directly ahead in the ego lane slows with its brake light on, constraining the ego car's pace, apparently because traffic is building ahead. A dark sedan farther ahead in the right same-direction lane continues at a steady speed and remains clear of the ego lane. Several cars in the opposite lanes to the right approach steadily beyond the median without interacting with the ego vehicle.", "hazard_reasoning": "There is a gray van slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The van's slowdown indicates reduced traffic flow ahead; slowing down will help maintain a safe distance and prevent a rear-end collision."}
{"id": "train_07404", "split": "train", "clip_key": "2020-0228-102841_014150_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "014150"}, "frames": ["2020-0228-102841_014150_movie_t-3.jpg", "2020-0228-102841_014150_movie_t-2.jpg", "2020-0228-102841_014150_movie_t-1.jpg", "2020-0228-102841_014150_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian carrying red box", "environment_perception": "An urban two-way street with one narrow lane in each direction and a painted chevron median runs between tall buildings; the asphalt is dry and traffic is light to moderate. A black sedan directly ahead in the ego lane moves at low speed and sets the ego vehicle's pace. On the left side near the curb, a pedestrian in blue overalls carrying a red box walks toward the ego car while loading a covered van parked on the left, bringing them close to the travel lane. Oncoming cars appear farther ahead in the right lane and continue smoothly. Several delivery vans and a small truck are parked along the left, slightly narrowing the ego lane.", "hazard_reasoning": "There is a pedestrian wearing blue overalls and carrying a red box, walking on the left side of the road, toward the ego car, because they are loading a van parked on the left side of the road. The driver should be aware that the pedestrian may step into the lane unexpectedly while loading the van and adjust speed accordingly."}
{"id": "train_07405", "split": "train", "clip_key": "2020-0218-103119_009606_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "009606"}, "frames": ["2020-0218-103119_009606_movie_t-3.jpg", "2020-0218-103119_009606_movie_t-2.jpg", "2020-0218-103119_009606_movie_t-1.jpg", "2020-0218-103119_009606_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "On a narrow urban street without a median, the ego-vehicle approaches a signalized intersection on smooth pavement with light traffic. A gray box truck waits directly ahead in the ego lane because the traffic light at the intersection is red, blocking the path and controlling the ego-vehicle's pace. A pedestrian stands to the left of the truck near the curb and green bike lane, lingering by a pole and potentially moving near the lane when traffic restarts. Several bicycles are parked on the right near the corner, outside the roadway.", "hazard_reasoning": "There is a gray truck stopped in front of the ego-car, in the ego lane, because of the red traffic light ahead at the intersection. Follow the vehicle ahead to maintain safe distance and anticipate its movements."}
{"id": "train_07406", "split": "train", "clip_key": "titan_clip_38_000408_movie", "source": {"subset": "titan", "scenario": "clip_38", "frame": "000408"}, "frames": ["titan_clip_38_000408_movie_t-3.jpg", "titan_clip_38_000408_movie_t-2.jpg", "titan_clip_38_000408_movie_t-1.jpg", "titan_clip_38_000408_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist", "environment_perception": "A narrow urban commercial street with a shared single lane and smooth pavement runs under a decorative arch, and traffic flow is light and slow. A cyclist in a black shirt pulling a cart rides in the middle of the road ahead, moving away from the ego car and occupying the lane, which constrains the ego's pace. Pedestrians gather along both sidewalks near the foreground crosswalk and continue walking parallel to the road without stepping into the lane. Farther ahead, a small van proceeds slowly along the same corridor. A roadside sign on the right indicates no parking.", "hazard_reasoning": "There is a cyclist wearing a black shirt, pulling a cart, cycling in the middle of the road, away from the ego car. The cyclist occupies the center of the lane and could hinder safe passage, so the driver should yield to maintain a safe distance."}
{"id": "train_07407", "split": "train", "clip_key": "2020-0228-102841_085618_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "085618"}, "frames": ["2020-0228-102841_085618_movie_t-3.jpg", "2020-0228-102841_085618_movie_t-2.jpg", "2020-0228-102841_085618_movie_t-1.jpg", "2020-0228-102841_085618_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement approaches a signalized intersection; two lanes run in the ego direction and opposing traffic is across a medianless street, with flow light and currently halted. A white sedan is stopped ahead in the ego lane at the stop line because the signal shows red. A small delivery scooter waits just ahead at the crosswalk in the same path, ahead of the sedan and in front of the ego vehicle, constraining the queue in the ego lane. In the adjacent right lane, a white hatchback is also stopped beside the sedan, remaining in its lane. On the left curb, a work truck and red barricades with cones occupy the shoulder, narrowing the edge but not blocking the lane.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, in front of the ego car, because of a red traffic light. The leading vehicle is halted due to the red signal, so the driver should stop to avoid a collision."}
{"id": "train_07408", "split": "train", "clip_key": "2020-0210-155354_029444_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "029444"}, "frames": ["2020-0210-155354_029444_movie_t-3.jpg", "2020-0210-155354_029444_movie_t-2.jpg", "2020-0210-155354_029444_movie_t-1.jpg", "2020-0210-155354_029444_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban T-junction opens onto a multi-lane arterial with a fenced median; the pavement is dry and smooth and cross-traffic is moderate as the ego vehicle waits at the stop line. A silver minivan ahead in the center of the junction bears right across the ego's path to enter the side street, briefly blocking the way. On the right, two box trucks proceed straight along the main road from right to left, forming the dominant crossing flow that constrains entry. On the left, a small car continues straight through the intersection toward the right, also part of the cross-traffic. A pedestrian on the far-side sidewalk walks along the curb and remains clear of the road. Overhead traffic signals and lane signs are visible.", "hazard_reasoning": "No hazards are detected; maintain current speed and stay alert to upcoming changes."}
{"id": "train_07409", "split": "train", "clip_key": "2020-0213-143552_020758_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "020758"}, "frames": ["2020-0213-143552_020758_movie_t-3.jpg", "2020-0213-143552_020758_movie_t-2.jpg", "2020-0213-143552_020758_movie_t-1.jpg", "2020-0213-143552_020758_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road without a median runs between tall buildings; the asphalt is dry and traffic is moderate but queued at a signalized intersection. A black canvas-covered truck directly ahead in the ego lane is stopped at the line because the light ahead shows red, holding the ego vehicle. A large white box truck waits ahead to the left in the adjacent same-direction lane, partly obscuring the view of the junction. A pedestrian at the far right enters the crosswalk and walks left across the lanes while vehicles remain halted. Red-and-white bollards line the right edge, narrowing the shoulder.", "hazard_reasoning": "There is a black truck stopped in front of the ego car, because of a red traffic light. You should stop to avoid colliding with the halted truck and comply with the red signal."}
{"id": "train_07410", "split": "train", "clip_key": "titan_clip_923_000174_movie", "source": {"subset": "titan", "scenario": "clip_923", "frame": "000174"}, "frames": ["titan_clip_923_000174_movie_t-3.jpg", "titan_clip_923_000174_movie_t-2.jpg", "titan_clip_923_000174_movie_t-1.jpg", "titan_clip_923_000174_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban narrow two-way street with no median and smooth pavement carries light traffic as buildings line both sides, with scaffolding on the left and cones by shops on the right. A pedestrian on the left ahead walks away from the ego vehicle, keeping out in the lane because a white van is parked along the curb. An oncoming white van approaches near the center of the road at low speed, leaving limited space between it and the parked vehicle. Another pedestrian stands beside the parked van on the left, stationary at the edge of the lane. The parked van partly obstructs the roadway, and the scaffolding and cones further constrict the margins.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and walking on the left side of the road, away from the ego car, because of the parked vehicle. The pedestrian's altered path increases collision risk, so the driver should carefully manoeuvre around them to maintain safety."}
{"id": "train_07411", "split": "train", "clip_key": "2020-0220-102630_118046_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "118046"}, "frames": ["2020-0220-102630_118046_movie_t-3.jpg", "2020-0220-102630_118046_movie_t-2.jpg", "2020-0220-102630_118046_movie_t-1.jpg", "2020-0220-102630_118046_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban two-way street with one lane per direction and a solid yellow median has smooth pavement and light traffic, with the oncoming lane to the right mostly clear. Ahead in the ego lane, a black hatchback is stopped at the intersection as the overhead signal shows red, constraining the ego-vehicle. On the left edge near the curb, a cyclist rides forward beside parked bicycles, staying to the shoulder but continuing toward the junction. On the right sidewalk near the corner, a pedestrian stands by the crosswalk and could step toward the road when the signal changes. A 40 km/h speed-limit sign is visible on the left.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego-car, in the ego lane, because of the red traffic light ahead at the intersection. Stop to avoid colliding with the halted vehicle at the intersection."}
{"id": "train_07412", "split": "train", "clip_key": "titan_clip_1308_000468_movie", "source": {"subset": "titan", "scenario": "clip_1308", "frame": "000468"}, "frames": ["titan_clip_1308_000468_movie_t-3.jpg", "titan_clip_1308_000468_movie_t-2.jpg", "titan_clip_1308_000468_movie_t-1.jpg", "titan_clip_1308_000468_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban shopping street with storefronts on both sides forms a single mixed-traffic lane without a centerline; the pavement looks smooth and vehicle flow is light while pedestrian activity is heavy. The ego car moves slowly straight with parked vehicles along both curbs. A small silver van ahead in the lane rolls forward and pauses amid foot traffic, constraining the ego vehicle's pace. Two pedestrians in the middle distance walk away along the center of the roadway, intermittently occupying the ego path. On the left side, a pedestrian wearing a white T-shirt and black pants walks toward the ego car along the edge and may step into the lane.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and black pants walking on the left side of the road, towards the ego car. The pedestrian may step into the lane unexpectedly, so the driver should be aware and proceed cautiously."}
{"id": "train_07413", "split": "train", "clip_key": "titan_clip_310_000312_movie", "source": {"subset": "titan", "scenario": "clip_310", "frame": "000312"}, "frames": ["titan_clip_310_000312_movie_t-3.jpg", "titan_clip_310_000312_movie_t-2.jpg", "titan_clip_310_000312_movie_t-1.jpg", "titan_clip_310_000312_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrians crossing ahead", "environment_perception": "An urban scene shows a narrow two-way uphill street without a center line, pavement worn but intact, and light traffic with no vehicles visible. Ahead at the zebra crossing, two pedestrians wearing white shirts walk across toward the ego vehicle, entering the ego lane. On the near left edge, a woman in a white top walks along the curb toward the crossing beside the ego lane. Farther ahead on the right sidewalk, a man in a white shirt walks uphill away from the camera, staying off the roadway. Construction fencing lines the left side, narrowing the shoulder near the crossing.", "hazard_reasoning": "There are two pedestrian wearing white shirts, crossing the street at a pedestrian crossing, towards the ego car. You should be aware of their presence to prevent a potential collision and maintain safe driving."}
{"id": "train_07414", "split": "train", "clip_key": "titan_clip_1393_000588_movie", "source": {"subset": "titan", "scenario": "clip_1393", "frame": "000588"}, "frames": ["titan_clip_1393_000588_movie_t-3.jpg", "titan_clip_1393_000588_movie_t-2.jpg", "titan_clip_1393_000588_movie_t-1.jpg", "titan_clip_1393_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with one narrow shared lane and no divider runs between tall buildings; the pavement is smooth and traffic is light with several vehicles parked along the left. On the right side near the storefront, a pedestrian wearing a white shirt and gray pants walks toward the ego car along the road edge and could enter the lane. Another pedestrian just behind him also walks toward the camera close to the curb, remaining near the ego path. Parked vehicles, including a white van beside the ego car and a white sedan slightly ahead, constrict the lane and limit maneuvering space. A restaurant signboard protrudes from the right sidewalk into the roadway, further narrowing the passage.", "hazard_reasoning": "A pedestrian wearing a white shirt and gray pants is walking on the right side of the road, toward the ego car. The pedestrian's path brings them close to the driving lane, so the driver should slow down to maintain a safe distance and avoid a potential collision."}
{"id": "train_07415", "split": "train", "clip_key": "titan_clip_658_000336_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_658_000336_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_658_000336_movie_t-3_augB1.jpg", "titan_clip_658_000336_movie_t-2_augB1.jpg", "titan_clip_658_000336_movie_t-1_augB1.jpg", "titan_clip_658_000336_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street with no centerline runs between shops and a fenced park; the asphalt is smooth and traffic is light with no oncoming vehicles. Ahead in the ego lane, two pedestrians cross from right to left: an adult in a gray shirt carrying a handbag holds hands with a child in a blue shirt, moving steadily across the vehicle's path and setting the ego car's pace. White vans are parked close to both curbs-one ahead on the left facing the same direction and another on the right facing the ego-narrowing the available lane and creating a brief pinch point. No traffic signals are visible.", "hazard_reasoning": "There are two pedestrians in front of the ego car, wearing a handbag, a gray shirt, and a blue shirt, crossing the road to the left side. The driver should slow down because the pedestrians are crossing directly in front of the vehicle and may step into its path unexpectedly."}
{"id": "train_07416", "split": "train", "clip_key": "titan_clip_1150_000330_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1150_000330_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1150_000330_movie_t-3_augB1.jpg", "titan_clip_1150_000330_movie_t-2_augB1.jpg", "titan_clip_1150_000330_movie_t-1_augB1.jpg", "titan_clip_1150_000330_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A narrow urban residential two-way street with no median runs between closely spaced buildings; the pavement is intact and traffic is light with no moving cars visible. Ahead in the center of the lane, a cyclist wearing a blue shirt is stopped in the middle of the road, temporarily blocking the ego vehicle's path. On the left at a parking lot exit, a white van waits partly in the roadway and could move into the ego lane. Beside that exit, a man stands at the curb near the lane, lingering close to the vehicle's path.", "hazard_reasoning": "There is a cyclist wearing a blue shirt, stopped in the middle of the road. The cyclist's stopped position blocks part of the lane and poses a collision risk, so the driver should carefully manoeuvre around it."}
{"id": "train_07417", "split": "train", "clip_key": "2020-0207-101955_067925_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "067925"}, "frames": ["2020-0207-101955_067925_movie_t-3.jpg", "2020-0207-101955_067925_movie_t-2.jpg", "2020-0207-101955_067925_movie_t-1.jpg", "2020-0207-101955_067925_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with smooth pavement runs straight, with a single left-side lane for the ego direction separated from oncoming lanes by a metal railing; overall flow is light but the ego lane briefly queues. A white hatchback directly ahead in the ego lane is stopped because of traffic congestion ahead, blocking the path and setting the pace. Farther ahead in the same lane a short line of vehicles remains slow, extending the delay. To the right beyond the railing, an oncoming white truck approaches steadily in its own lane, separated from the ego path.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The white hatchback is stationary in your lane due to congestion, so you must stop to avoid a rear-end collision."}
{"id": "train_07418", "split": "train", "clip_key": "titan_clip_197_000180_movie", "source": {"subset": "titan", "scenario": "clip_197", "frame": "000180"}, "frames": ["titan_clip_197_000180_movie_t-3.jpg", "titan_clip_197_000180_movie_t-2.jpg", "titan_clip_197_000180_movie_t-1.jpg", "titan_clip_197_000180_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian crossing ahead", "environment_perception": "An urban two-way street with one narrow lane per direction runs between tall buildings, the pavement smooth, and traffic light as the ego-vehicle approaches a small intersection. A cyclist directly ahead crosses left to right at the crosswalk, moving briskly across the ego path and forcing the ego-vehicle to slow. A white car ahead in the same direction creeps past the crosswalk through the intersection, pacing the ego-vehicle's progress. On the right side of the intersection, a pedestrian in a black shirt carrying a bag walks toward the crosswalk, potentially stepping into the ego lane after the cyclist. Other pedestrians remain on the sidewalks, and no signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and carrying a bag, on the right side of the intersection walking towards a pedestrian crossing. The driver should yield to allow this pedestrian to cross safely at the intersection."}
{"id": "train_07419", "split": "train", "clip_key": "2020-0226-140503_064501_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "064501"}, "frames": ["2020-0226-140503_064501_movie_t-3.jpg", "2020-0226-140503_064501_movie_t-2.jpg", "2020-0226-140503_064501_movie_t-1.jpg", "2020-0226-140503_064501_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van", "environment_perception": "An urban multi-lane city street with smooth pavement approaches a signalized intersection, and traffic flow is light. A white van ahead in the ego lane continues straight and slows near the crosswalk, briefly setting the pace. On the left edge of the ego lane a coned-off maintenance vehicle is stopped and narrows the lane; no yellow van is visible parked there. On the right, several vans and a larger truck with a ramp remain parked at the curb and stay outside the travel lane. Overhead traffic lights span the intersection.", "hazard_reasoning": "There is a yellow van parked on the left side on the road, in the ego lane. The yellow van is positioned in your travel lane and may obstruct your path, so you should be aware and prepare to adjust speed or change lanes."}
{"id": "train_07420", "split": "train", "clip_key": "2020-0129-144857_058453_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "058453"}, "frames": ["2020-0129-144857_058453_movie_t-3.jpg", "2020-0129-144857_058453_movie_t-2.jpg", "2020-0129-144857_058453_movie_t-1.jpg", "2020-0129-144857_058453_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated two-way road curves gently left, with one lane per direction separated by flexible bollards and high barriers; the pavement is smooth and traffic is light. A white box truck ahead in the ego lane continues straight at a steady pace, effectively setting the ego vehicle's speed. Farther ahead in the same direction another truck travels near the inner barrier with a small gap to the box truck. To the right beyond the bollards, a silver truck approaches in the oncoming lane and remains well separated from the ego path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07421", "split": "train", "clip_key": "2020-0228-102841_041099_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "041099"}, "frames": ["2020-0228-102841_041099_movie_t-3.jpg", "2020-0228-102841_041099_movie_t-2.jpg", "2020-0228-102841_041099_movie_t-1.jpg", "2020-0228-102841_041099_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A busy urban arterial with multiple same-direction lanes runs between tall buildings; the pavement looks smooth and traffic queues at an intersection. A white hatchback stops directly ahead in the ego lane because the overhead light is red, so the ego car waits behind it. In the adjacent right lanes, white vans are also stopped or slowly creeping toward the stop line, remaining in their lanes and forming a parallel queue. On the far left near the curb, a motorcyclist filters forward past the stationary cars and moves toward the front, possibly entering ahead of the ego vehicle. The traffic signal ahead shows solid red.", "hazard_reasoning": "A white hatchback is stopped in front of the ego car in the ego lane, because the light is red. The driver needs to stop to avoid colliding with the halted vehicle at the red light."}
{"id": "train_07422", "split": "train", "clip_key": "titan_clip_14_000270_movie", "source": {"subset": "titan", "scenario": "clip_14", "frame": "000270"}, "frames": ["titan_clip_14_000270_movie_t-3.jpg", "titan_clip_14_000270_movie_t-2.jpg", "titan_clip_14_000270_movie_t-1.jpg", "titan_clip_14_000270_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for crossing pedestrian", "environment_perception": "An urban shopping street features a narrow single-lane brick-paved roadway with no median; the surface looks smooth and vehicle traffic is light while pedestrians dominate. Ahead in the ego lane, a pedestrian wearing black trousers, a blue T-shirt, and sports shoes crosses left to right directly in front of the car, briefly occupying the path. Farther ahead, several pedestrians walk along the center of the lane and along the left side, moving forward and potentially drifting into the vehicle's line. On the right margin near a hotel entrance, a couple of pedestrians linger by the curb as if about to cross, staying near the edge. Orange cones at the right-side driveway sit off the travel lane.", "hazard_reasoning": "There is a pedestrian wearing a pair of black trousers, a blue T-shirt, sports shoes, crossing the street, in front of the ego car. The driver should slow down because the pedestrian is crossing directly in front of the vehicle, increasing the risk of collision."}
{"id": "train_07423", "split": "train", "clip_key": "titan_clip_768_000276_movie", "source": {"subset": "titan", "scenario": "clip_768", "frame": "000276"}, "frames": ["titan_clip_768_000276_movie_t-3.jpg", "titan_clip_768_000276_movie_t-2.jpg", "titan_clip_768_000276_movie_t-1.jpg", "titan_clip_768_000276_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist ahead", "environment_perception": "An urban residential setting features a very narrow two-way road without a centerline; the pavement looks smooth and traffic is light with no visible oncoming vehicles. Ahead on the left, a cyclist wearing a gray shirt rides away along the curb in the ego direction, keeping near the edge and occupying the left side of the lane. At a driveway on the left, a black car is parked under a carport and remains stationary, not protruding into the roadway. Utility poles and building walls stand close to the carriageway, narrowing the usable space.", "hazard_reasoning": "There is a cyclist wearing a gray shirt, cycling on the left side of the road, away from the ego car. The cyclist could change speed or direction unexpectedly, so the driver should stay alert and anticipate potential movements in order to maintain a safe following distance."}
{"id": "train_07424", "split": "train", "clip_key": "titan_clip_648_000096_movie", "source": {"subset": "titan", "scenario": "clip_648", "frame": "000096"}, "frames": ["titan_clip_648_000096_movie_t-3.jpg", "titan_clip_648_000096_movie_t-2.jpg", "titan_clip_648_000096_movie_t-1.jpg", "titan_clip_648_000096_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cart", "environment_perception": "An urban residential two-way road without a centerline runs between close-set buildings; the pavement is smooth and traffic is light with no vehicles nearby. Ahead near the right edge of the roadway, a man pushes a cart and walks away from the ego vehicle in the lane, as another person uses the sidewalk, prompting him to stay in the road. Farther ahead on the left sidewalk, a pedestrian with an umbrella walks in the same direction and remains clear of the lane. No salient traffic signals are visible, and only a single cone sits on the right sidewalk.", "hazard_reasoning": "There is a man pushing a cart and walking on the right side of the road, away from the ego car, because another person is walking on the sidewalk. The driver should carefully manoeuvre around the cart-pushing pedestrian to avoid a potential collision."}
{"id": "train_07425", "split": "train", "clip_key": "2020-0217-110854_001129_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "001129"}, "frames": ["2020-0217-110854_001129_movie_t-3.jpg", "2020-0217-110854_001129_movie_t-2.jpg", "2020-0217-110854_001129_movie_t-1.jpg", "2020-0217-110854_001129_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban commercial street with two same-direction lanes runs between shopfronts on a dry surface, and traffic is heavy and slow. A white sedan directly ahead in the ego lane slows to a crawl because congestion builds in front, holding our pace. To its left, a silver box truck in the adjacent lane creeps forward alongside, forming part of the queue and restricting lateral space. Farther ahead, a white bus sits in the line of vehicles and contributes to the stop-and-go flow. At the left edge near the truck, a red scooter inches forward close to the lane line, moving cautiously through the gap. Orange cones and a tight curb on the right narrow the shoulder without entering the lane.", "hazard_reasoning": "A white sedan slowing down in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_07426", "split": "train", "clip_key": "2020-0213-143552_032402_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "032402"}, "frames": ["2020-0213-143552_032402_movie_t-3.jpg", "2020-0213-143552_032402_movie_t-2.jpg", "2020-0213-143552_032402_movie_t-1.jpg", "2020-0213-143552_032402_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian crossing ahead", "environment_perception": "An urban two-way undivided street with smooth pavement and a zebra crossing fills the view, and the ego vehicle proceeds in the left lane with light traffic. A white box van travels ahead in the same lane at a modest speed toward a gentle left bend, constraining the ego vehicle's pace. A pedestrian wearing black pants and a black jacket is in the middle of the crosswalk, moving from the right curb to the left and passing through the ego lane. Another pedestrian stands on the right sidewalk by the crosswalk, waiting to cross. No traffic signal is visible at the crossing, and there is no center divider.", "hazard_reasoning": "There is a pedestrian wearing black pants and a black jacket, in the middle of the road, crossing the street from the right side to the left side. The driver should yield because the pedestrian is directly crossing the path and has the right-of-way."}
{"id": "train_07427", "split": "train", "clip_key": "titan_clip_949_000060_movie", "source": {"subset": "titan", "scenario": "clip_949", "frame": "000060"}, "frames": ["titan_clip_949_000060_movie_t-3.jpg", "titan_clip_949_000060_movie_t-2.jpg", "titan_clip_949_000060_movie_t-1.jpg", "titan_clip_949_000060_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "An urban two-way residential road with no marked centerline runs straight ahead on smooth asphalt, and traffic is light with no oncoming vehicles. Cones along both curbs create a work zone that narrows the roadway. A blue truck is parked along the left edge just ahead because of construction on the left, occupying part of the ego lane and constraining the available width. Farther ahead on the left, another construction truck stands at the site entrance, remaining stopped and further pinching the path. On the right sidewalk, a pedestrian walks away near the hedge, separated from the road by cones. Temporary construction signage stands on the left.", "hazard_reasoning": "There is a blue truck parked on the left side of the road, because of construction work on the left. The parked truck adjacent to construction barricades narrows the travel lane, requiring you to manoeuvre to avoid collision."}
{"id": "train_07428", "split": "train", "clip_key": "titan_clip_1142_000492_movie", "source": {"subset": "titan", "scenario": "clip_1142", "frame": "000492"}, "frames": ["titan_clip_1142_000492_movie_t-3.jpg", "titan_clip_1142_000492_movie_t-2.jpg", "titan_clip_1142_000492_movie_t-1.jpg", "titan_clip_1142_000492_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban two-way street lined with shops has one narrow lane each direction, no median, and worn but dry pavement; traffic is light with no moving vehicles visible. On the left edge ahead in the ego lane, a man pulling a rolling suitcase walks away along the roadway, partially occupying the lane and constraining the ego vehicle's path. On the right side near the curb, a pedestrian wearing a pink shirt and black pants talks on the phone while walking toward the ego vehicle, moving along the edge and approaching the lane. Far ahead near the centerline, a few pedestrians cross the street in the oncoming lane without entering the ego lane. Parked bicycles line the left side and a parking-garage entrance opens on the right.", "hazard_reasoning": "A pedestrian, wearing a pink shirt and black pants, and talking on the phone, is walking towards the ego car, on the right side of the road. The driver should be aware because the pedestrian may step into the lane unexpectedly."}
{"id": "train_07429", "split": "train", "clip_key": "titan_clip_1220_000372_movie", "source": {"subset": "titan", "scenario": "clip_1220", "frame": "000372"}, "frames": ["titan_clip_1220_000372_movie_t-3.jpg", "titan_clip_1220_000372_movie_t-2.jpg", "titan_clip_1220_000372_movie_t-1.jpg", "titan_clip_1220_000372_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian", "environment_perception": "A narrow urban street with buildings tight to the curb has a single lane in each direction, no divider, and dry, smooth pavement; traffic is light as the scene progresses beneath an overhead structure. Along the left curb beside the ego car, a large teal delivery truck is stopped or creeping, narrowing lateral space as the ego passes. Farther ahead in the same direction, a small white van moves slowly down the lane and sets the pace. On the right side of the road, a pedestrian wearing brown pants walks away from the ego car along the curb, close to the travel lane.", "hazard_reasoning": "There is a pedestrian wearing brown pants, walking away from the ego car, on the right side of the road. The pedestrian could change direction or step into the roadway unexpectedly, so the driver should stay alert under this situation."}
{"id": "train_07430", "split": "train", "clip_key": "2020-0131-135401_000257_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "000257"}, "frames": ["2020-0131-135401_000257_movie_t-3.jpg", "2020-0131-135401_000257_movie_t-2.jpg", "2020-0131-135401_000257_movie_t-1.jpg", "2020-0131-135401_000257_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road with one lane in each direction climbs slightly between close buildings; the dry pavement is in fair condition and traffic is light. Bright sun glare washes the upper view at times. A white truck ahead in the ego lane drives away uphill, and the ego vehicle follows in the same lane. Farther ahead, a small truck approaches in the oncoming lane and passes by while maintaining separation. On the right, a cyclist rides along the sidewalk near the crosswalk, moving forward parallel to traffic without entering the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. Keep a safe distance and follow the vehicle ahead to avoid collision if it brakes suddenly."}
{"id": "train_07431", "split": "train", "clip_key": "titan_clip_588_000582_movie", "source": {"subset": "titan", "scenario": "clip_588", "frame": "000582"}, "frames": ["titan_clip_588_000582_movie_t-3.jpg", "titan_clip_588_000582_movie_t-2.jpg", "titan_clip_588_000582_movie_t-1.jpg", "titan_clip_588_000582_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cone", "environment_perception": "An urban two-lane road with buildings tight to the curb has no median and smooth pavement, and traffic moves at a moderate flow in both directions. A dark car ahead in the ego lane continues straight at steady speed, loosely setting the pace. To the right, an oncoming silver car approaches in its lane and passes near the center line without encroaching. On the left, pedestrians by shopfronts walk and wait near the curb while remaining behind barriers. The left edge hosts a roadside work zone marked by orange traffic cones, barricades, and signboards-there is an orange traffic cone on the left side of the road-and a small service truck stops by the site, slightly narrowing the shoulder.", "hazard_reasoning": "There is an orange traffic cone on the left side of the road. The cone indicates a potential obstruction and reduced lane width, so the driver should carefully manoeuvre to maintain a safe path and avoid collision."}
{"id": "train_07432", "split": "train", "clip_key": "2020-0203-114632_034497_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "034497"}, "frames": ["2020-0203-114632_034497_movie_t-3.jpg", "2020-0203-114632_034497_movie_t-2.jpg", "2020-0203-114632_034497_movie_t-1.jpg", "2020-0203-114632_034497_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban commercial street with tall buildings lines a two-way road that has one lane per direction, no median, and smooth pavement; traffic is slow and heavy. In the ego lane on the left, a white van directly ahead is stopped because of congestion ahead, holding the ego vehicle at a standstill. In the opposing lane to the right, an oncoming city bus approaches slowly and continues past the queued vehicles while remaining in its lane. Pedestrians move along both sidewalks behind guardrails and stay clear of the roadway. Overhead direction boards are visible, and a posted speed limit of 50 appears on the left.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe following distance and avoid a collision due to slowed traffic."}
{"id": "train_07433", "split": "train", "clip_key": "titan_clip_1052_000024_movie", "source": {"subset": "titan", "scenario": "clip_1052", "frame": "000024"}, "frames": ["titan_clip_1052_000024_movie_t-3.jpg", "titan_clip_1052_000024_movie_t-2.jpg", "titan_clip_1052_000024_movie_t-1.jpg", "titan_clip_1052_000024_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A dense urban back street with narrow two-way traffic and no centerline runs between close buildings; the asphalt is patchy with puddles and traffic is light and slow. A small kei truck ahead in the ego lane proceeds slowly near the left curb, controlling the ego car's pace. On the left, a pedestrian in a white shirt walks away from the camera in the roadway to pass a parked vehicle, which brings the person near the ego path. Farther ahead near the truck, another pedestrian moves along the left edge in the same direction, staying close to the vehicle. A red triangular stop sign hangs above the intersection ahead, and a construction site with cones and barriers occupies the left side.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and walking, on the left side of the road, away from the ego-car, because of the parked vehicle. You should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_07434", "split": "train", "clip_key": "titan_clip_701_000354_movie", "source": {"subset": "titan", "scenario": "clip_701", "frame": "000354"}, "frames": ["titan_clip_701_000354_movie_t-3.jpg", "titan_clip_701_000354_movie_t-2.jpg", "titan_clip_701_000354_movie_t-1.jpg", "titan_clip_701_000354_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with a single shared lane and no median curves gently right; pavement is smooth and motor traffic is very light. Ahead, a pedestrian in a white T-shirt walks in front of the ego car toward the right side of the road, potentially entering the travel path. Just left and very near, a pedestrian in dark clothing walks toward the camera along the lane edge, reducing clearance beside the vehicle. Farther ahead near the lane center, another pedestrian walks away in the same direction, which may constrain the ego vehicle's pace. A white truck is stopped along the left side ahead with its rear protruding into the lane, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt and walking in front of the ego car, toward the right side of the road. The pedestrian is crossing into the lane ahead, so the driver should slow down to maintain safety."}
{"id": "train_07435", "split": "train", "clip_key": "titan_clip_764_000174_movie", "source": {"subset": "titan", "scenario": "clip_764", "frame": "000174"}, "frames": ["titan_clip_764_000174_movie_t-3.jpg", "titan_clip_764_000174_movie_t-2.jpg", "titan_clip_764_000174_movie_t-1.jpg", "titan_clip_764_000174_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian in road", "environment_perception": "An urban commercial street with a narrow single carriageway, no center divider, worn pavement, and very light vehicular traffic unfolds as the car proceeds straight past dense shopfronts. A pedestrian stands in the middle of the road ahead, occupying the ego path and reducing available lane space. On the left near the curb, several pedestrians walk diagonally into the roadway and approach the car's path as they cross toward the center. On the right edge beside the shops, a man with a bag walks along the curb close to the lane.", "hazard_reasoning": "There is a pedestrian standing in the middle of the road. The pedestrian could step into the vehicle's path, so the driver should be aware to avoid a collision."}
{"id": "train_07436", "split": "train", "clip_key": "titan_clip_298_000474_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_298_000474_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_298_000474_movie_t-3_augB1.jpg", "titan_clip_298_000474_movie_t-2_augB1.jpg", "titan_clip_298_000474_movie_t-1_augB1.jpg", "titan_clip_298_000474_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to cyclist crossing", "environment_perception": "An urban two-way street with one lane per direction and no median stretches ahead; the asphalt is smooth and traffic is light. A cyclist in a blue shirt is ahead in the middle of the roadway, crossing rightward across the ego lane toward the right side, briefly blocking the path and dictating a slow approach. A passenger car travels toward us in the opposite lane at a distance, continuing straight with no effect on our movement. Parked vehicles and bicycles line the curbs but remain outside the travel lanes.", "hazard_reasoning": "There is a cyclist wearing a blue shirt, in the middle of the street, crossing to the right side of the road. The cyclist may move unpredictably into your path, so you need to yield to avoid a collision."}
{"id": "train_07437", "split": "train", "clip_key": "2020-0206-101736_044489_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "044489"}, "frames": ["2020-0206-101736_044489_movie_t-3.jpg", "2020-0206-101736_044489_movie_t-2.jpg", "2020-0206-101736_044489_movie_t-1.jpg", "2020-0206-101736_044489_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial carries same-direction traffic with a bollard-separated area on the right; the pavement is dry and smooth, and flow is heavy and mostly stopped beneath a pedestrian overpass. A white hatchback directly ahead in the ego lane is stopped because of congestion and holds the ego vehicle at a standstill. To the left, a silver van in the adjacent lane creeps forward in the queue alongside the ego car. To the right, a white van in the neighboring lane pauses by the red bollards and advances only intermittently within the jam.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Drivers should stop promptly to avoid colliding with the halted vehicle and maintain a safe following distance."}
{"id": "train_07438", "split": "train", "clip_key": "titan_clip_879_000288_movie", "source": {"subset": "titan", "scenario": "clip_879", "frame": "000288"}, "frames": ["titan_clip_879_000288_movie_t-3.jpg", "titan_clip_879_000288_movie_t-2.jpg", "titan_clip_879_000288_movie_t-1.jpg", "titan_clip_879_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with no centerline and smooth asphalt is shown; edge lines bound a single shared lane and traffic is light as the ego car slows for a constricted section. Ahead in the center of the lane, a pedestrian in a white shirt stands holding a bicycle because a parked vehicle blocks space, directly occupying the ego path. Along the left curb just ahead, a white mini car is parked jutting into the roadway, pushing movement toward the middle and constraining the ego vehicle's pace. On the right ahead, a white van is stopped at the curb opposite the other car, creating a bottleneck that the pedestrian must clear before the ego can pass.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, standing in the middle of the road, because of the parked vehicle. The pedestrian may move unpredictably into the vehicle's path, so the driver should slow down to avoid a collision."}
{"id": "train_07439", "split": "train", "clip_key": "2020-0203-114632_011080_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "011080"}, "frames": ["2020-0203-114632_011080_movie_t-3.jpg", "2020-0203-114632_011080_movie_t-2.jpg", "2020-0203-114632_011080_movie_t-1.jpg", "2020-0203-114632_011080_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential two-way street with no median and white guardrails on both sides rises slightly and bends right, the pavement in fair condition and traffic very light with no vehicles ahead or oncoming. A pedestrian walks ahead on the right edge near the guardrail, moving in the same direction and remaining close to the narrowed shoulder, potentially near the ego lane as the road constricts. Another pedestrian stands farther ahead near the right railing by the buildings, appearing to wait at the roadside as traffic passes. A yellow warning sign is posted on the right, visible before the bend. Construction fencing and temporary barricades line the right side, encroaching on the lane and creating a narrow passage.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07440", "split": "train", "clip_key": "2020-0207-151349_077833_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_077833_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_077833_movie_t-3_augB1.jpg", "2020-0207-151349_077833_movie_t-2_augB1.jpg", "2020-0207-151349_077833_movie_t-1_augB1.jpg", "2020-0207-151349_077833_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated roadway with a guardrail on the right and a merge taper; the pavement looks smooth and traffic is moderate and slow-moving. Ahead in the ego lane, a gray truck slows, as noted, and it sets the pace for the ego vehicle. In the lane to the left slightly ahead, a white van creeps forward in parallel and could obstruct any attempt to pass or merge. Alongside on the near left, a dark sedan moves close to the ego car, further restricting lateral maneuvering. A cluster of pedestrians stands on the left sidewalk near an intersection, while the right edge remains constrained by the guardrail and taper.", "hazard_reasoning": "There's a gray truck slowing in front of the ego car, in the ego lane. The truck's reduced speed ahead may require the driver to reduce speed to maintain a safe following distance under this situation."}
{"id": "train_07441", "split": "train", "clip_key": "2020-0131-103016_022481_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "022481"}, "frames": ["2020-0131-103016_022481_movie_t-3.jpg", "2020-0131-103016_022481_movie_t-2.jpg", "2020-0131-103016_022481_movie_t-1.jpg", "2020-0131-103016_022481_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided roadway with smooth pavement runs between office buildings, with a metal barrier separating the opposite carriageway on the right and light, steady traffic. A white truck directly ahead in the ego lane accelerates away, increasing the gap from the ego vehicle. Parked cars along the left curb remain stationary, slightly narrowing the usable lane. On the separated roadway to the right, an oncoming white van proceeds past without affecting the ego path. No prominent signals or speed signs are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07442", "split": "train", "clip_key": "2020-0131-135401_065047_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "065047"}, "frames": ["2020-0131-135401_065047_movie_t-3.jpg", "2020-0131-135401_065047_movie_t-2.jpg", "2020-0131-135401_065047_movie_t-1.jpg", "2020-0131-135401_065047_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes runs under an elevated structure; pavement looks smooth and traffic is heavy in a slow queue. Ahead in the ego lane, a white van is stopped for a red traffic light, keeping the ego car stationary. In the adjacent right lane, several vans travel alongside at walking pace and then stop as well, matching the queue and leaving little room to merge. The red signal governs the flow throughout the clip. White roadside barricades along the left curb narrow the shoulder but do not intrude into the lane.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The ego-vehicle must stop to avoid a collision with the halted van and comply with the red signal."}
{"id": "train_07443", "split": "train", "clip_key": "2020-0220-102630_090006_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "090006"}, "frames": ["2020-0220-102630_090006_movie_t-3.jpg", "2020-0220-102630_090006_movie_t-2.jpg", "2020-0220-102630_090006_movie_t-1.jpg", "2020-0220-102630_090006_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes runs past apartments and shops, with a metal fence and narrow shoulder on the right; the pavement is dry and smooth, and traffic flows at a moderate, steady pace. A yellow hatchback directly ahead in the ego lane accelerates, widening the gap and briefly setting the ego vehicle's pace. A white box truck slightly ahead in the left lane continues straight at a slower rate, occupying the adjacent space and limiting an immediate lane change. Several vehicles farther ahead in both lanes travel in a compact line, maintaining steady movement.", "hazard_reasoning": "There is a yellow hatchback accelerating in the ego lane, in front of the ego car. Because the light is about to change, you should start moving promptly to maintain a safe following distance and avoid abrupt maneuvers."}
{"id": "train_07444", "split": "train", "clip_key": "2020-0226-140503_058200_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "058200"}, "frames": ["2020-0226-140503_058200_movie_t-3.jpg", "2020-0226-140503_058200_movie_t-2.jpg", "2020-0226-140503_058200_movie_t-1.jpg", "2020-0226-140503_058200_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban street runs straight between midrise buildings, with no median and dry, slightly worn pavement, and traffic is very light. Parked cars line the left curb ahead, some close to the travel lane, narrowing the ego lane and shaping the path forward. Far ahead in the same direction, a small car proceeds away along the center of the road without affecting the ego vehicle. On the right sidewalk a pedestrian walks away from the camera behind a low railing, remaining separate from traffic. Bicycles are parked along the railing on the right, but no moving oncoming vehicles or signals are prominent in view.", "hazard_reasoning": "The caption is empty, indicating no immediate risks. The road is clear of hazards and the vehicle is traveling at a safe speed, so the driver can continue driving without adjustments."}
{"id": "train_07445", "split": "train", "clip_key": "titan_clip_975_000066_movie", "source": {"subset": "titan", "scenario": "clip_975", "frame": "000066"}, "frames": ["titan_clip_975_000066_movie_t-3.jpg", "titan_clip_975_000066_movie_t-2.jpg", "titan_clip_975_000066_movie_t-1.jpg", "titan_clip_975_000066_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "A narrow urban street with no centerline runs between buildings, bounded by a white metal railing on the right; the pavement is smooth and traffic is light with no vehicles ahead. Two pedestrians in white shirts and dark suits walk toward the camera along the left edge near a storefront, moving steadily and potentially edging into the ego vehicle's path as the lane is narrow. A third person stands by the shop entrance on the left, appearing stationary and close to the curbside goods, which slightly reduce the usable width. Parked bicycles and planters line the right beside the railing, creating a constrained corridor, and the road leads toward a small junction ahead without visible signals.", "hazard_reasoning": "There are two pedestrians wearing a white shirt and black suit, walking on the left side of the road, towards the ego car. The driver should be aware of these pedestrians as they may step into the lane, posing a potential collision risk."}
{"id": "train_07446", "split": "train", "clip_key": "2020-0220-151845_047445_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "047445"}, "frames": ["2020-0220-151845_047445_movie_t-3.jpg", "2020-0220-151845_047445_movie_t-2.jpg", "2020-0220-151845_047445_movie_t-1.jpg", "2020-0220-151845_047445_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban arterial under an elevated structure carries two same-direction lanes, with a bollarded shoulder on the left and a guardrail on the right; the pavement is dry and traffic moves at a moderate pace. Ahead left, a yellow and green truck angles in from the shoulder, cutting into the left lane and merging into the flow. Directly ahead in that left lane, a tarp-covered work truck travels slowly, constraining that lane's pace. Ahead right, a silver hatchback in the right lane moves slightly ahead of the ego-vehicle while continuing straight. A large yellow coach bus stands along the bollarded area on the far left. An overhead electronic sign is illuminated above the roadway.", "hazard_reasoning": "There is a yellow and green truck cutting into the left lane. This sudden lane change can encroach on your lane and increase collision risk, so carefully manoeuvre around the truck to maintain a safe distance."}
{"id": "train_07447", "split": "train", "clip_key": "titan_clip_1003_000258_movie", "source": {"subset": "titan", "scenario": "clip_1003", "frame": "000258"}, "frames": ["titan_clip_1003_000258_movie_t-3.jpg", "titan_clip_1003_000258_movie_t-2.jpg", "titan_clip_1003_000258_movie_t-1.jpg", "titan_clip_1003_000258_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial side street with paver bricks forms a single narrow lane without a center divider, bordered by cones along both curbs; traffic is light and steady. A pedestrian wearing a striped shirt crosses in the middle of the lane toward the right side of the road, briefly occupying the ego path. Slightly farther ahead, a black sedan in the same direction slows near the right curb by a building entrance, reducing the available space. Several other pedestrians walk along the sidewalks ahead, keeping to the sides. A round roadside sign on the left shows 30, and an entrance to a parking area is visible on the right.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt, crossing the street, and walking in the middle of the road, toward the right side of the road. The pedestrian's position in the center of the lane increases the risk of collision if the vehicle maintains speed, so the driver should slow down to allow safe passage."}
{"id": "train_07448", "split": "train", "clip_key": "2020-0129-144857_032356_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "032356"}, "frames": ["2020-0129-144857_032356_movie_t-3.jpg", "2020-0129-144857_032356_movie_t-2.jpg", "2020-0129-144857_032356_movie_t-1.jpg", "2020-0129-144857_032356_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-lane road runs under an elevated structure with dry, smooth pavement and heavy, stop-and-go same-direction traffic. Immediately ahead in the left-hand ego lane, a black car is stopped because of congestion, holding the ego vehicle. Farther ahead in the same lane, a white box truck is also stopped, forming the queue that blocks progress. A concrete wall and guardrail line the right edge, leaving no usable shoulder.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. You should stop to avoid colliding with the halted vehicle."}
{"id": "train_07449", "split": "train", "clip_key": "2020-0226-140503_082759_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "082759"}, "frames": ["2020-0226-140503_082759_movie_t-3.jpg", "2020-0226-140503_082759_movie_t-2.jpg", "2020-0226-140503_082759_movie_t-1.jpg", "2020-0226-140503_082759_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid a collision.", "environment_perception": "A dense urban arterial with multiple lanes in each direction and only painted separation runs between tall buildings; the pavement is dry and traffic is heavy and mostly stop-and-go. A white hatchback is stopped directly ahead in the ego lane because of congestion, keeping the ego vehicle halted. To the left, a silver microvan ahead in the adjacent lane also queues at low speed, constraining the ego's pace. On the right, a dark SUV and a white car in the neighboring lane creep forward beside the ego vehicle as their line inches ahead. Farther ahead the same-direction lanes remain packed, while an overhead traffic signal shows green for through movement.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Since this vehicle is stationary due to congestion, the driver must stop to avoid a collision."}
{"id": "train_07450", "split": "train", "clip_key": "2020-0204-103442_072053_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "072053"}, "frames": ["2020-0204-103442_072053_movie_t-3.jpg", "2020-0204-103442_072053_movie_t-2.jpg", "2020-0204-103442_072053_movie_t-1.jpg", "2020-0204-103442_072053_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "An urban two-way road with one lane each way and no median runs through a residential area; the pavement looks smooth and traffic is light and steady. A black sedan ahead in the ego lane goes straight across the crosswalk, modulating speed to follow a larger truck. Farther ahead, a dark dump truck continues straight and effectively sets the pace for the lane. On the left roadside, a white box truck is parked because it is being unloaded, narrowing the verge but remaining outside the travel lane. An overhead traffic signal is visible at the intersection ahead.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. The parked truck reduces the available lane width, so the driver should manoeuvre around it safely."}
{"id": "train_07451", "split": "train", "clip_key": "titan_clip_755_000024_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_755_000024_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_755_000024_movie_t-3_augB1.jpg", "titan_clip_755_000024_movie_t-2_augB1.jpg", "titan_clip_755_000024_movie_t-1_augB1.jpg", "titan_clip_755_000024_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to cyclist ahead", "environment_perception": "An urban narrow street with a single lane and no median, pavement in good condition; cones and construction on the left create a temporary chicane, and overall traffic is light. Ahead in the center of the lane, a cyclist wearing a green shirt rides away from the ego vehicle in the middle of the road, occupying the path and constraining the pace. Farther ahead near the right curb, another cyclist proceeds in the same direction along the edge but stays clear of the center. On the left shoulder a black truck and a flatbed are stopped within a coned work zone, narrowing the usable lane and forming a pinch point. No signals or unusual signs are prominent, and no oncoming traffic appears.", "hazard_reasoning": "There is a cyclist wearing a green shirt and cycling away from the ego car, in the middle of the road. The cyclist's central position makes their trajectory unpredictable, so yielding prevents a potential collision."}
{"id": "train_07452", "split": "train", "clip_key": "titan_clip_370_000282_movie", "source": {"subset": "titan", "scenario": "clip_370", "frame": "000282"}, "frames": ["titan_clip_370_000282_movie_t-3.jpg", "titan_clip_370_000282_movie_t-2.jpg", "titan_clip_370_000282_movie_t-1.jpg", "titan_clip_370_000282_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian crossing ahead", "environment_perception": "An urban residential street with narrow two-way traffic and no centerline stretches toward a small cross street; asphalt is smooth and traffic is light. The ego approaches the intersection where a bold \"止まれ\" (stop) marking appears on the lane. On the left near the intersection, a man in a black shirt walks toward the camera as he crosses the road, potentially stepping into the ego lane. On the right at the corner, another pedestrian on the sidewalk moves along the curb, remaining off the roadway. No moving vehicles are visible ahead or oncoming. A silver microvan is parked along the left curb close to the lane, and an orange cone sits by a building entrance on the right, slightly narrowing the usable space.", "hazard_reasoning": "There is a man wearing a black shirt walking towards the ego car, on the left side of the road, because he is crossing the road. The driver should be aware of this pedestrian as he crosses into the vehicle's path and may step in front of the car."}
{"id": "train_07453", "split": "train", "clip_key": "titan_clip_948_000126_movie", "source": {"subset": "titan", "scenario": "clip_948", "frame": "000126"}, "frames": ["titan_clip_948_000126_movie_t-3.jpg", "titan_clip_948_000126_movie_t-2.jpg", "titan_clip_948_000126_movie_t-1.jpg", "titan_clip_948_000126_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene shows a narrow two-way approach road leading to a railway level crossing, with green painted lanes, intact pavement, and very light traffic. Far ahead in the ego path, a cyclist wearing a striped shirt pedals away over the crossing, directly occupying the route the ego car will follow. Slightly left ahead, another cyclist also rides away across the tracks, remaining in the ego vehicle's line and constraining its approach speed. The level-crossing gates are raised and the signal lights show no warning, while black-and-yellow barriers and surveillance signs flank the crossing.", "hazard_reasoning": "There is a cyclist wearing a striped shirt and crossing a railway crossing in front of the ego car, away from the ego car. The driver should slow down to safely navigate the crossing and avoid a collision with the cyclist."}
{"id": "train_07454", "split": "train", "clip_key": "2020-0131-135401_000950_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "000950"}, "frames": ["2020-0131-135401_000950_movie_t-3.jpg", "2020-0131-135401_000950_movie_t-2.jpg", "2020-0131-135401_000950_movie_t-1.jpg", "2020-0131-135401_000950_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction runs between mid-rise buildings; the pavement is dry and in good condition, and overall traffic is light. A white box truck is immediately ahead in the ego lane and remains stopped, blocking the path and constraining the ego vehicle's movement. A pedestrian walks along the left sidewalk near the truck, continuing away from the camera without entering the road, while another person is visible farther ahead on the right sidewalk. No vehicles are present in the oncoming lane, which is separated by a solid yellow centerline. No salient traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a white truck stopped in the ego lane. Because the stopped truck blocks the road ahead and creates a blind spot, you should stop to avoid a collision."}
{"id": "train_07455", "split": "train", "clip_key": "titan_clip_1236_000138_movie", "source": {"subset": "titan", "scenario": "clip_1236", "frame": "000138"}, "frames": ["titan_clip_1236_000138_movie_t-3.jpg", "titan_clip_1236_000138_movie_t-2.jpg", "titan_clip_1236_000138_movie_t-1.jpg", "titan_clip_1236_000138_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A compact urban residential street with mid-rise buildings lines a narrow two-way road without a median; the pavement is smooth and traffic appears light throughout. A pedestrian wearing a black shirt and black pants walks toward the camera along the right-side edge by the green curb strip, close to the travel lane and potentially relevant to the ego vehicle's path. Far ahead, an oncoming light van proceeds along its lane with ample distance and no immediate interaction. Parked cars sit recessed in a garage on the left, and the straight roadway offers clear sightlines.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants, walking on the left side of the road, towards the ego car. The driver should be aware because the pedestrian may step onto the roadway ahead, requiring timely slowing or stopping to avoid a collision."}
{"id": "train_07456", "split": "train", "clip_key": "2020-0220-102630_121716_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "121716"}, "frames": ["2020-0220-102630_121716_movie_t-3.jpg", "2020-0220-102630_121716_movie_t-2.jpg", "2020-0220-102630_121716_movie_t-1.jpg", "2020-0220-102630_121716_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid rear-end collision.", "environment_perception": "A suburban two-lane road with a solid yellow center line and fair pavement runs through low-rise housing, and traffic in the ego direction is slow while the opposite lane moves steadily. A black minivan directly ahead in the ego lane is stopped and constrains the ego car, with several vehicles queued farther ahead. In the oncoming lane, a white car approaches from the distance and continues straight past without deviating. A person stands on the left sidewalk near a building, staying clear of the roadway.", "hazard_reasoning": "There is a black Sedan stopped in front of the ego car because of traffic congestion ahead. Since the sedan ahead has halted due to congestion, the driver must stop to avoid a collision."}
{"id": "train_07457", "split": "train", "clip_key": "titan_clip_496_000372_movie", "source": {"subset": "titan", "scenario": "clip_496", "frame": "000372"}, "frames": ["titan_clip_496_000372_movie_t-3.jpg", "titan_clip_496_000372_movie_t-2.jpg", "titan_clip_496_000372_movie_t-1.jpg", "titan_clip_496_000372_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban residential street with a narrow two-way carriageway and no center divider curves gently left; the asphalt looks smooth and traffic is light with no vehicles visible. A pedestrian wearing a white shirt and black pants stands at the left edge near a storefront, pausing by the roadway and potentially stepping into the lane. Another pedestrian farther ahead on the left walks along the curb in the same direction, keeping to the side. A third person near the bend on the right stands by the fence inside the verge. A school-zone warning sign is posted on the left, and a roadside convex mirror on the right aids visibility for the upcoming blind curve.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, standing at the left side of the road. You should carefully manoeuvre around the pedestrian because they may step into the road unexpectedly."}
{"id": "train_07458", "split": "train", "clip_key": "2020-0210-101957_020890_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "020890"}, "frames": ["2020-0210-101957_020890_movie_t-3.jpg", "2020-0210-101957_020890_movie_t-2.jpg", "2020-0210-101957_020890_movie_t-1.jpg", "2020-0210-101957_020890_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction and a metal fence median separating oncoming traffic stretches ahead on smooth pavement; flow is moderate with a slow queue forming up the road. A black motorcycle ahead in the ego left lane slows because of traffic congestion ahead, constraining the ego car's pace. Two box trucks farther ahead in the right lane move slowly and help create the bottleneck. A white SUV slightly ahead to the right continues in the right lane near the ego vehicle, limiting chances to merge. Pedestrians on the left sidewalk stand and walk along the curb without entering the roadway.", "hazard_reasoning": "There is a black motorcycle slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The black motorcycle is reducing speed due to congestion ahead, so you should slow down to maintain a safe following distance and avoid collision."}
{"id": "train_07459", "split": "train", "clip_key": "titan_clip_368_000024_movie", "source": {"subset": "titan", "scenario": "clip_368", "frame": "000024"}, "frames": ["titan_clip_368_000024_movie_t-3.jpg", "titan_clip_368_000024_movie_t-2.jpg", "titan_clip_368_000024_movie_t-1.jpg", "titan_clip_368_000024_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street with no centerline runs between low-rise buildings, the pavement is smooth, and traffic is light as the ego vehicle proceeds straight along the left side. Ahead on the right, a pedestrian in a black T-shirt and black pants walks in the middle of the roadway, occupying the center-right and reducing available space. Farther ahead on the right curb, a white delivery truck stands stopped, further narrowing the oncoming side of the road. A second pedestrian moves along the left sidewalk near a building, remaining off the carriageway.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and black pants, and walking in the middle of the road, to the right side. The driver should slow down because the pedestrian walking in the roadway may cross the vehicle's path and pose a collision risk."}
{"id": "train_07460", "split": "train", "clip_key": "2020-0225-145150_035554_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-145150_035554_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-145150_035554_movie_t-3_augB1.jpg", "2020-0225-145150_035554_movie_t-2_augB1.jpg", "2020-0225-145150_035554_movie_t-1_augB1.jpg", "2020-0225-145150_035554_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with two lanes per direction runs between mid-rise buildings; the pavement is dry and intact, and traffic is slow to moderate with a short queue ahead. A blue light truck directly ahead in the ego lane slows because of congestion further up the road, constraining the ego car's pace. In the lane to the left, a light-green hatchback slightly ahead also eases off and travels parallel, limiting room to change lanes. On the far right beyond double solid white center lines, an oncoming black van proceeds in the opposite lanes without interacting.", "hazard_reasoning": "There's a blue truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The blue truck's reduced speed indicates congestion ahead, so you should slow down to maintain safe distance and avoid collision."}
{"id": "train_07461", "split": "train", "clip_key": "titan_clip_1102_000162_movie", "source": {"subset": "titan", "scenario": "clip_1102", "frame": "000162"}, "frames": ["titan_clip_1102_000162_movie_t-3.jpg", "titan_clip_1102_000162_movie_t-2.jpg", "titan_clip_1102_000162_movie_t-1.jpg", "titan_clip_1102_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrians", "environment_perception": "An urban shopping street with a single narrow shared lane lacks a divider, the tiled pavement is clean, and there is no motor traffic while pedestrian flow is moderate. On the left side of the road, two men wearing white shirts and black pants, each with a backpack, walk away from the ego vehicle along the edge, reducing left-side clearance. Ahead in the center, multiple pedestrians move both toward and away from the camera and intermittently cross the path, setting the ego vehicle's pace. Near the left storefront, a pedestrian lingers beside a row of parked bicycles close to the travel line, narrowing space on that side. Additional bicycles and shop signs line both sides, with an A-frame board near the right curb further narrowing the corridor.", "hazard_reasoning": "There are two men wearing white shirts and black pants, carrying backpacks, and walking away from the ego car, on the left side of the road. The driver should yield because pedestrians may cross the vehicle's path on the narrow street, maintaining safety in a pedestrian-heavy area."}
{"id": "train_07462", "split": "train", "clip_key": "titan_clip_843_000066_movie", "source": {"subset": "titan", "scenario": "clip_843", "frame": "000066"}, "frames": ["titan_clip_843_000066_movie_t-3.jpg", "titan_clip_843_000066_movie_t-2.jpg", "titan_clip_843_000066_movie_t-1.jpg", "titan_clip_843_000066_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban intersection on a narrow undivided street has smooth pavement and light traffic as the ego vehicle approaches a zebra crosswalk. A woman in a green dress carrying a handbag crosses from left to right directly ahead on the crosswalk, moving through the vehicle's path. Another woman beside her continues rightward at a similar pace across the crosswalk, occupying the lane and constraining forward motion. Farther ahead near the left corner, several pedestrians walk along the sidewalk and begin to cross the side street without entering the ego lane. Beyond the crosswalk, a white van stands at the right curb, narrowing the edge.", "hazard_reasoning": "There is a woman wearing a green dress, carrying a handbag, and crossing the street on a crosswalk, from the left side to the right. The driver should stop immediately to yield to the pedestrian walking across the crosswalk."}
{"id": "train_07463", "split": "train", "clip_key": "2020-0214-102601_074977_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "074977"}, "frames": ["2020-0214-102601_074977_movie_t-3.jpg", "2020-0214-102601_074977_movie_t-2.jpg", "2020-0214-102601_074977_movie_t-1.jpg", "2020-0214-102601_074977_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision", "environment_perception": "In a suburban neighborhood, the ego car proceeds in the left lane of a narrow two-way residential road with no median and dry, smooth pavement; traffic is light. A black hatchback directly ahead in the ego lane slows because congestion forms near the next intersection, constraining the ego car's pace. A pedestrian stands on the left sidewalk by the hedge near the crossing area, waiting and not stepping into the road but close to the ego path. No oncoming vehicles are immediate. An overhead school-crossing sign is visible, and a low speed hump or raised crossing ahead further encourages the slowdown.", "hazard_reasoning": "There is a black hatchback slowing in front of the ego car because of traffic congestion ahead of the intersection. Slow down to maintain a safe following distance and avoid rear-end collisions."}
{"id": "train_07464", "split": "train", "clip_key": "titan_clip_1134_000576_movie", "source": {"subset": "titan", "scenario": "clip_1134", "frame": "000576"}, "frames": ["titan_clip_1134_000576_movie_t-3.jpg", "titan_clip_1134_000576_movie_t-2.jpg", "titan_clip_1134_000576_movie_t-1.jpg", "titan_clip_1134_000576_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the runner's movement", "environment_perception": "A quiet urban residential street lined with trees forms a narrow single carriageway without a centerline, the pavement is smooth, and traffic is very light. The ego-vehicle proceeds along the left edge as the verge tightens near bollards and a green utility box on the right. A pedestrian wearing a cap and striped shirt runs toward the ego vehicle along the left side of the road, close to the lane and potentially entering its path. No other moving vehicles or salient signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a cap and striped shirt, running on the left side of the road toward the ego car. The pedestrian may enter the roadway unexpectedly, so the driver should be aware to avoid a possible collision."}
{"id": "train_07465", "split": "train", "clip_key": "titan_clip_991_000522_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_991_000522_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_991_000522_movie_t-3_augB1.jpg", "titan_clip_991_000522_movie_t-2_augB1.jpg", "titan_clip_991_000522_movie_t-1_augB1.jpg", "titan_clip_991_000522_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision with pedestrian.", "environment_perception": "An urban two-way street with shops lines a narrow single-lane-each-direction roadway without a median; the pavement is worn with patches and traffic is light at low speed. A small white van ahead in the same direction travels slowly near the center, setting the pace. Ahead on the right, a pedestrian wearing a white shirt and black pants stands in the ego lane on the right side of the road, directly in the vehicle's path. At the near right edge, another pedestrian walks toward the camera while edging into the lane. Parked scooters and bicycles along both curbs further narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, standing in the ego lane on the right side of the road. You should slow down because the pedestrian is in your travel lane and may move unpredictably into your path."}
{"id": "train_07466", "split": "train", "clip_key": "titan_clip_59_000060_movie", "source": {"subset": "titan", "scenario": "clip_59", "frame": "000060"}, "frames": ["titan_clip_59_000060_movie_t-3.jpg", "titan_clip_59_000060_movie_t-2.jpg", "titan_clip_59_000060_movie_t-1.jpg", "titan_clip_59_000060_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian ahead", "environment_perception": "A narrow urban two-way street with a single shared lane and no median runs between close-set buildings; the pavement is smooth and traffic is light with no oncoming vehicles visible. Ahead on the left edge, a pedestrian wearing black high socks walks away from the ego car along the curb, close to the travel lane. Slightly farther ahead on the left, a cyclist rides slowly in the same direction near the gutter, occupying the margin of the ego path. Farther ahead near the middle of the roadway, another pedestrian walks away within the lane. No notable traffic signals or signs are visible, and no parked vehicles or obstacles intrude into the lane.", "hazard_reasoning": "There is a pedestrian wearing black high socks, walking along the left side of the road, away from the ego car. The driver should be aware because the pedestrian might enter the roadway unexpectedly."}
{"id": "train_07467", "split": "train", "clip_key": "titan_clip_687_000594_movie", "source": {"subset": "titan", "scenario": "clip_687", "frame": "000594"}, "frames": ["titan_clip_687_000594_movie_t-3.jpg", "titan_clip_687_000594_movie_t-2.jpg", "titan_clip_687_000594_movie_t-1.jpg", "titan_clip_687_000594_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with a narrow two-way roadway lacks a median or centerline, the asphalt looks worn, and vehicle traffic is absent as the car proceeds slowly. On the right side ahead, a pedestrian in blue pants carrying a backpack walks toward the ego vehicle along the edge, potentially entering the lane and constraining speed. Ahead on the left, two people walk away near the shopfronts, keeping to the side and not impeding the path. Farther ahead near the center, another person approaches in the lane and may briefly block progress. Bicycles and shop displays line the curbs, narrowing the margins.", "hazard_reasoning": "There is a pedestrian wearing blue pants, carrying a backpack, walking on the right side of the road, towards the ego car. The driver should carefully manoeuvre to avoid the pedestrian who is entering the travel lane and maintain a safe clearance."}
{"id": "train_07468", "split": "train", "clip_key": "2020-0220-102630_122948_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "122948"}, "frames": ["2020-0220-102630_122948_movie_t-3.jpg", "2020-0220-102630_122948_movie_t-2.jpg", "2020-0220-102630_122948_movie_t-1.jpg", "2020-0220-102630_122948_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with a single lane per direction and a solid yellow center line runs straight beneath a pedestrian overpass; the pavement looks smooth and traffic is moderate and slow. Ahead in the ego lane a black minivan slows because of congestion further up the street, constraining the ego car's pace. In the oncoming lane to the right a small white van approaches steadily in its line. Along the right edge of the oncoming side, near the camera, a large box truck stands close to the curb, narrowing that lane for opposing traffic but not affecting the ego lane.", "hazard_reasoning": "There is a black minivan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_07469", "split": "train", "clip_key": "2020-0204-150838_027911_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "027911"}, "frames": ["2020-0204-150838_027911_movie_t-3.jpg", "2020-0204-150838_027911_movie_t-2.jpg", "2020-0204-150838_027911_movie_t-1.jpg", "2020-0204-150838_027911_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with the stopped vehicle.", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and a low median on the left has smooth pavement and heavy, stop-and-go flow. A black sedan directly ahead in the ego lane is stopped because congestion blocks the lane, holding the ego vehicle stationary. To the right, a line of silver vans and cars creeps forward alongside, limiting any chance for the ego car to change lanes. Farther ahead in the adjacent lanes, tightly packed cars and a bus inch forward intermittently, showing the queue continues beyond the immediate block. White delineator posts edge the median while tall buildings line both sides.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a collision with the stopped vehicle."}
{"id": "train_07470", "split": "train", "clip_key": "2020-0127-132751_041076_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "041076"}, "frames": ["2020-0127-132751_041076_movie_t-3.jpg", "2020-0127-132751_041076_movie_t-2.jpg", "2020-0127-132751_041076_movie_t-1.jpg", "2020-0127-132751_041076_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-end collision.", "environment_perception": "An urban arterial with two same-direction lanes and a curbside fence on the right has dry, smooth pavement and heavy stop-and-go flow as queues build ahead. A gray sedan directly ahead in the ego lane is stopped because of traffic congestion ahead, holding the ego vehicle in place. In the adjacent left lane slightly ahead, a small covered pickup is also stopped in a queue, limiting opportunities to merge. Farther ahead, a line of cars in both lanes creeps toward the distance, keeping speeds very low.", "hazard_reasoning": "A gray sedan stopped in the ego lane because of traffic congestion ahead. The sedan is halted due to congestion, so the driver must stop to avoid colliding with stationary vehicles in front."}
{"id": "train_07471", "split": "train", "clip_key": "2020-0218-103119_004197_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "004197"}, "frames": ["2020-0218-103119_004197_movie_t-3.jpg", "2020-0218-103119_004197_movie_t-2.jpg", "2020-0218-103119_004197_movie_t-1.jpg", "2020-0218-103119_004197_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A quiet urban street lined with tall trees runs straight between buildings, with a single narrow lane, no centerline, and smooth asphalt; traffic is very light with no moving vehicles visible. Bollards and hedges separate the sidewalks from the carriageway. A white passenger car is parked ahead at the right curb, reducing the available width in the lane. Another light-colored car is stopped farther ahead on the right in the same line of parked vehicles. A small cobbled side access joins from the left near the camera but is empty. No traffic signals or posted speed signs are visible.", "hazard_reasoning": "There are no apparent hazards in the scene, as the road is clear and unobstructed, and no pedestrians, cyclists, or obstacles are present, so no immediate warning is necessary."}
{"id": "train_07472", "split": "train", "clip_key": "titan_clip_539_000402_movie", "source": {"subset": "titan", "scenario": "clip_539", "frame": "000402"}, "frames": ["titan_clip_539_000402_movie_t-3.jpg", "titan_clip_539_000402_movie_t-2.jpg", "titan_clip_539_000402_movie_t-1.jpg", "titan_clip_539_000402_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street lined with shops has smooth pavement and no median, and traffic is light with no same-direction or oncoming vehicles visible. Two pedestrians on the left side ahead, wearing white and carrying handbags, walk away from the ego car along the curb and remain close to the travel lane, so they may enter the ego path. Farther ahead near the center of the roadway, another pedestrian moves slowly from the right toward the left, briefly occupying the ego lane. A person on the right sidewalk stands near a storefront by the curb but stays off the roadway.", "hazard_reasoning": "There are pedestrians, wearing white shirts and carrying handbags, walking on the left side of the road, away from the ego car. The driver should slow down to account for nearby pedestrians who may step onto the roadway unexpectedly."}
{"id": "train_07473", "split": "train", "clip_key": "2020-0228-150133_006301_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "006301"}, "frames": ["2020-0228-150133_006301_movie_t-3.jpg", "2020-0228-150133_006301_movie_t-2.jpg", "2020-0228-150133_006301_movie_t-1.jpg", "2020-0228-150133_006301_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes and no median has dry pavement and heavy, effectively stopped traffic. A white box truck is stopped directly ahead in the ego lane, blocking the way. To its left, a larger cargo truck stands parallel in the adjacent lane, keeping pace with the stoppage and limiting room to maneuver. On the right by a side street, two cyclists travel forward along the curb line past the intersection without entering the ego lane. Sun glare from above right slightly reduces visibility.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The stopped truck directly blocks your path, posing a collision risk if you do not stop immediately."}
{"id": "train_07474", "split": "train", "clip_key": "titan_clip_1390_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1390_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1390_000204_movie_t-3_augB1.jpg", "titan_clip_1390_000204_movie_t-2_augB1.jpg", "titan_clip_1390_000204_movie_t-1_augB1.jpg", "titan_clip_1390_000204_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban commercial street with a single vehicle lane and no median runs between dense storefronts; the patched asphalt is dry and overall motor traffic is light, with pedestrian activity dominating. Ahead, a man in a blue shirt and black pants crosses from the right sidewalk toward the left directly in front of the ego-car, passing through the lane. Farther ahead, small groups of pedestrians walk along both sides and some step near the roadway at shop fronts, close to the ego path. No other moving vehicles are visible in either direction. Orange safety cones line the right edge, and a small white service vehicle stands at the left curb, slightly narrowing the passage.", "hazard_reasoning": "There is a man, wearing a blue shirt and black pants, crossing the street, from the left side of the right side, in front of the ego-car. The driver should manoeuvre carefully around the pedestrian to avoid a collision and maintain safe passage."}
{"id": "train_07475", "split": "train", "clip_key": "2020-0131-135401_017222_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "017222"}, "frames": ["2020-0131-135401_017222_movie_t-3.jpg", "2020-0131-135401_017222_movie_t-2.jpg", "2020-0131-135401_017222_movie_t-1.jpg", "2020-0131-135401_017222_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection beneath an elevated roadway, with smooth pavement and a short striped island and guardrail on the right; traffic is bunched and effectively stopped. A black van directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. A silver hatchback slightly ahead to the left in the adjacent lane also waits at the line and remains stationary. On the far right beyond the island, several cars move along the cross street from right to left and do not share the ego lane. Overhead signals show red for the ego approach, and no other hazards are visible.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid rear-ending the halted vehicle at the red light."}
{"id": "train_07476", "split": "train", "clip_key": "2020-0220-102630_089338_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "089338"}, "frames": ["2020-0220-102630_089338_movie_t-3.jpg", "2020-0220-102630_089338_movie_t-2.jpg", "2020-0220-102630_089338_movie_t-1.jpg", "2020-0220-102630_089338_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with multiple same-direction lanes runs between apartment blocks and a fenced edge, the pavement dry and smooth as traffic moves slowly in a queue. Directly ahead in the ego lane a bright green hatchback is stopped because congestion builds further forward, holding the ego vehicle. In the adjacent right lane a gray box truck just ahead creeps along, remaining close and limiting the space to change lanes. Farther ahead several cars and a bus continue rolling slowly in both lanes, extending the backup.", "hazard_reasoning": "There is a green hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The green hatchback is stopped due to traffic congestion, requiring the driver to stop to maintain safe distance and prevent a rear-end collision."}
{"id": "train_07477", "split": "train", "clip_key": "2020-0129-105040_068403_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-105040_068403_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-105040_068403_movie_t-3_augB1.jpg", "2020-0129-105040_068403_movie_t-2_augB1.jpg", "2020-0129-105040_068403_movie_t-1_augB1.jpg", "2020-0129-105040_068403_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid yellow centerline stretches ahead between close buildings; the asphalt is dry and traffic remains light. On the left edge just ahead, a box truck is stopped with its rear door open while a person works at the tail, narrowing the ego lane. A cyclist wearing a white jacket rides away from the ego car along the left side of the road, staying near the curb but needing to pass the stopped truck, which may bring them closer to the ego path. A triangular children warning sign hangs above the roadway.", "hazard_reasoning": "A cyclist wearing a white jacket and cycling away from the ego car, on the left side of the road. The cyclist is passing close to a parked delivery truck that partially narrows the lane, so the driver should carefully manoeuvre around the cyclist to avoid collision."}
{"id": "train_07478", "split": "train", "clip_key": "2020-0225-102455_071993_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "071993"}, "frames": ["2020-0225-102455_071993_movie_t-3.jpg", "2020-0225-102455_071993_movie_t-2.jpg", "2020-0225-102455_071993_movie_t-1.jpg", "2020-0225-102455_071993_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop now.", "environment_perception": "An urban three-lane arterial runs between tall buildings on dry, well-kept pavement, with heavy, slow-moving traffic. A white van directly ahead in the ego lane slows with brake lights on because congestion builds further up the lane, constraining the ego vehicle's pace. To the right, a black taxi and other cars inch forward in the adjacent lane alongside the van, keeping close spacing that limits lane changes. On the left curb lane, several delivery vans and a truck stand partly in the lane with rear doors open as workers handle cargo, narrowing the margin. Overhead signage shows straight arrows for all lanes, and an electronic board ahead displays messages.", "hazard_reasoning": "There is a white van slowing down in the ego lane, because of traffic congestion ahead. The van's reduced speed indicates queuing traffic ahead, which could require a sudden stop; the driver should prepare to stop to maintain a safe following distance."}
{"id": "train_07479", "split": "train", "clip_key": "2020-0203-154554_034110_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_034110_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_034110_movie_t-3_augB1.jpg", "2020-0203-154554_034110_movie_t-2_augB1.jpg", "2020-0203-154554_034110_movie_t-1_augB1.jpg", "2020-0203-154554_034110_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the merging motorcycle", "environment_perception": "An urban multi-lane road runs under an elevated expressway with smooth pavement and heavy, slow same-direction traffic; no oncoming traffic is visible. A large white coach is directly ahead in the ego lane, barely moving and constraining the pace. To the left of the bus, a black motorcycle shifts left and merges into the left lane to bypass the queue, leaving the ego lane because of congestion ahead. In the adjacent right lane, a line of cars and small trucks remains nearly stationary. A white mini truck is stopped at the far right edge with its tailgate up, tightening space beside the queue.", "hazard_reasoning": "There is a black motorcycle changing from the ego-car lane to the left lane because of traffic congestion ahead. The driver should be aware because the motorcycle's unexpected merge could lead to a side impact if not anticipated."}
{"id": "train_07480", "split": "train", "clip_key": "2020-0204-103442_092152_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "092152"}, "frames": ["2020-0204-103442_092152_movie_t-3.jpg", "2020-0204-103442_092152_movie_t-2.jpg", "2020-0204-103442_092152_movie_t-1.jpg", "2020-0204-103442_092152_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban scene on a narrow two-way road with one lane each way and guardrails on both sides; the pavement looks worn and traffic moves slowly in a queue. A black SUV directly ahead in the ego lane is stopped, queuing because congestion ahead blocks the lane, and it holds the ego vehicle. An oncoming white compact car to the right advances slowly in its lane and then pauses near the SUV, remaining clear of the ego path. Overhead a blue sign indicates straight ahead, and roadside boards warn of roadwork 50 m ahead. No other notable road users or hazards are visible.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the halted vehicle."}
{"id": "train_07481", "split": "train", "clip_key": "titan_clip_171_000648_movie", "source": {"subset": "titan", "scenario": "clip_171", "frame": "000648"}, "frames": ["titan_clip_171_000648_movie_t-3.jpg", "titan_clip_171_000648_movie_t-2.jpg", "titan_clip_171_000648_movie_t-1.jpg", "titan_clip_171_000648_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to let the pedestrian cross", "environment_perception": "An urban alley-like two-way street leads into a small three-way intersection with no median or marked lanes; pavement is clean and traffic is light. On the right side a pedestrian in a white shirt, carrying a handbag, steps off the curb and crosses toward the ego-vehicle using the pedestrian crossing, moving into the ego path. On the left edge two pedestrians walk across the mouth of the intersection from left to right, also occupying the area ahead. A white van is stopped at the left curb near the corner, narrowing the approach.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and crossing the street on the right side of the intersection, towards the ego-car, because of the pedestrian crossing. Yield to allow the pedestrian to cross safely in front of the vehicle."}
{"id": "train_07482", "split": "train", "clip_key": "titan_clip_1210_000276_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1210_000276_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1210_000276_movie_t-3_augB1.jpg", "titan_clip_1210_000276_movie_t-2_augB1.jpg", "titan_clip_1210_000276_movie_t-1_augB1.jpg", "titan_clip_1210_000276_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street is visible, brick-paved and narrow, without a median; motor traffic is light while pedestrian activity is heavy, and the pavement is in good condition. Two pedestrians, one in a black dress and one in a yellow shirt, walk ahead in the middle of the road away from the ego vehicle because the sidewalk is congested, occupying the ego path and constraining speed. An oncoming cyclist approaches along the right side, riding straight toward the camera and passing close to the right edge. Farther ahead on the right, a small white van waits at the curb, reducing clearance. Parked bicycles on the left and orange cones along both sides further narrow the available roadway.", "hazard_reasoning": "There are two pedestrians wearing a black dress and a yellow shirt, walking in the middle of the road, away from the ego car, because the sidewalk is congested. Slow down to avoid collision with pedestrians walking on the roadway."}
{"id": "train_07483", "split": "train", "clip_key": "titan_clip_707_000204_movie", "source": {"subset": "titan", "scenario": "clip_707", "frame": "000204"}, "frames": ["titan_clip_707_000204_movie_t-3.jpg", "titan_clip_707_000204_movie_t-2.jpg", "titan_clip_707_000204_movie_t-1.jpg", "titan_clip_707_000204_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban residential street in Japan forms a two-way road with no center divider, smooth pavement, and light traffic as the ego vehicle proceeds along the left side. Ahead in the center of the roadway, an oncoming cyclist wearing a white T-shirt rides toward the ego car, occupying the middle of the lane and aligning with the ego vehicle's path. No other moving vehicles are visible. Bollards line the right edge and a bicycle is parked against the right wall, with buildings and overhead wires close to the curb.", "hazard_reasoning": "There is a cyclist wearing a white T-shirt and cycling in the middle of the road, toward the ego car. The cyclist's position in the center of the lane poses a collision risk, so the driver should slow down to maintain a safe distance."}
{"id": "train_07484", "split": "train", "clip_key": "titan_clip_79_000576_movie", "source": {"subset": "titan", "scenario": "clip_79", "frame": "000576"}, "frames": ["titan_clip_79_000576_movie_t-3.jpg", "titan_clip_79_000576_movie_t-2.jpg", "titan_clip_79_000576_movie_t-1.jpg", "titan_clip_79_000576_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban residential setting shows a narrow two-way local road ending at a T-intersection with a perpendicular street; pavement is smooth and traffic is light. The ego vehicle stops at the marked stop line before entering the junction. From the right, a white van turns into the right lane across the intersection, passing in front. A pedestrian on the near right stands at the corner beside the van, close to the roadway and potentially entering the crossing area. A red triangular stop sign and a no-parking sign are posted on the left.", "hazard_reasoning": "There is a white van turning into the right lane, from the right side of the intersection. The van may enter your lane unexpectedly, so you should stop to avoid a collision."}
{"id": "train_07485", "split": "train", "clip_key": "titan_clip_666_000336_movie", "source": {"subset": "titan", "scenario": "clip_666", "frame": "000336"}, "frames": ["titan_clip_666_000336_movie_t-3.jpg", "titan_clip_666_000336_movie_t-2.jpg", "titan_clip_666_000336_movie_t-1.jpg", "titan_clip_666_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with narrow single lanes and no centerline runs between low buildings; the asphalt is in good condition and traffic is light with no vehicles immediately ahead or oncoming. On the right, a pedestrian in a black shirt and gray shorts walks toward the ego car from the curb, moving partly into the roadway and may enter the ego lane. Farther ahead on the right edge, a backpacked pedestrian walks away along the sidewalk, not affecting the lane. Construction activity lines the left shoulder with blue tarps, barricades, and workers standing near the curb, slightly narrowing the usable space. A black van is parked along the right curb in the near foreground.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and gray shorts and walking towards the ego car on the right side of the road. The pedestrian is moving into the vehicle's path, so the driver should carefully manoeuvre around to maintain a safe distance."}
{"id": "train_07486", "split": "train", "clip_key": "titan_clip_606_000492_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_606_000492_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_606_000492_movie_t-3_augB1.jpg", "titan_clip_606_000492_movie_t-2_augB1.jpg", "titan_clip_606_000492_movie_t-1_augB1.jpg", "titan_clip_606_000492_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way road and smooth pavement has light, slow-moving traffic. There is no median, and storefront railings line the left edge. Directly ahead, two pedestrians cross from left to right across the ego lane, the man wearing black pants, and they pass in front of the vehicle, constraining its pace. A small white van farther ahead in the same direction rolls slowly through the lane just beyond them, keeping speeds low. A white van is stopped along the right edge near the camera in the oncoming lane.", "hazard_reasoning": "There is a pedestrian wearing black pant on the right side of the road crossing the street from the left side. The driver should slow down because the pedestrian may step into the vehicle's path unexpectedly behind the parked van."}
{"id": "train_07487", "split": "train", "clip_key": "2020-0205-103411_074333_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "074333"}, "frames": ["2020-0205-103411_074333_movie_t-3.jpg", "2020-0205-103411_074333_movie_t-2.jpg", "2020-0205-103411_074333_movie_t-1.jpg", "2020-0205-103411_074333_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes runs between mid-rise buildings, separated from oncoming traffic to the right by a hedge median; the pavement is dry and traffic is moderate. A black box truck directly ahead in the ego lane slows, constraining the ego car's pace. A red hatchback travels in the adjacent left lane slightly behind, moving forward parallel without signaling to merge. Farther ahead in the left lane, a small white van proceeds steadily near a side-street entrance, keeping to its lane, while additional vehicles move on the far side of the median as opposing flow.", "hazard_reasoning": "There is a black truck slowing in the ego lane, in front of the ego car. The truck's deceleration poses a collision risk if the driver does not reduce speed promptly."}
{"id": "train_07488", "split": "train", "clip_key": "2020-0203-154554_041994_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "041994"}, "frames": ["2020-0203-154554_041994_movie_t-3.jpg", "2020-0203-154554_041994_movie_t-2.jpg", "2020-0203-154554_041994_movie_t-1.jpg", "2020-0203-154554_041994_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene unfolds on a narrow, single-lane ramp beneath an elevated expressway, bordered by concrete walls and guardrails; the pavement is smooth and traffic is light. A white box truck travels ahead in the ego lane, moving away at a steady pace and effectively setting the ego vehicle's speed. Several passenger cars run on a parallel roadway to the right behind a barrier and do not interact with the ramp traffic. Overhead directional boards in Japanese hang from the structure above. The ramp curves gently right, and the bridge columns and side walls create partial occlusion through the bend.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. Although it is moving away, the truck could brake suddenly or change speed, and the partial obstruction ahead requires the driver to stay alert to avoid unexpected maneuvers."}
{"id": "train_07489", "split": "train", "clip_key": "titan_clip_816_000588_movie", "source": {"subset": "titan", "scenario": "clip_816", "frame": "000588"}, "frames": ["titan_clip_816_000588_movie_t-3.jpg", "titan_clip_816_000588_movie_t-2.jpg", "titan_clip_816_000588_movie_t-1.jpg", "titan_clip_816_000588_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with a single lane each direction and no median runs past shopfronts; the pavement is smooth and traffic is light. Ahead at the zebra crosswalk, two pedestrians-one in black pants and one in white pants-walk from the left toward the right side of the road, crossing the ego vehicle's path at the intersection. On the right edge near the camera, a silver box truck in the oncoming lane rolls past toward the camera and clears the junction, briefly narrowing space at the curb. A man on the left sidewalk walks away along the shops. A stop marking and a pedestrian crossing sign precede the crosswalk.", "hazard_reasoning": "There are two pedestrians wearing black pants and white pants crossing to the right side of the road at the crosswalk. The driver should slow down to yield to crossing pedestrians and prevent a collision."}
{"id": "train_07490", "split": "train", "clip_key": "titan_clip_653_000528_movie", "source": {"subset": "titan", "scenario": "clip_653", "frame": "000528"}, "frames": ["titan_clip_653_000528_movie_t-3.jpg", "titan_clip_653_000528_movie_t-2.jpg", "titan_clip_653_000528_movie_t-1.jpg", "titan_clip_653_000528_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrians crossing ahead", "environment_perception": "An urban scene shows a narrow roadway without a marked centerline, smooth asphalt, and a gentle uphill left curve; traffic is light with no vehicles visible. Two pedestrians wearing black pants cross ahead from left to right on the right side of the road, moving through the ego lane and controlling the car's pace. Another pedestrian stands on the right sidewalk beside the bollards, staying out of the roadway and posing no immediate conflict. A short pedestrian crossing is marked where they are walking, and metal bollards line the right edge.", "hazard_reasoning": "There are two pedestrians wearing black pants and crossing the street in front of the ego car from left to right, on the right side of the road. The driver should yield to these crossing pedestrians to avoid a collision."}
{"id": "train_07491", "split": "train", "clip_key": "2020-0228-102841_013061_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "013061"}, "frames": ["2020-0228-102841_013061_movie_t-3.jpg", "2020-0228-102841_013061_movie_t-2.jpg", "2020-0228-102841_013061_movie_t-1.jpg", "2020-0228-102841_013061_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane in each direction and no median has dry pavement and heavy, slow traffic. A black sedan directly ahead in the ego lane is stopped for the red light, holding the queue. An oncoming white refrigerated truck to the right creeps toward the intersection in its lane, squeezing past the stopped line and limiting space. On the left curb, a delivery box truck stands with its rear open while a worker and stacks of crates occupy the roadside, further narrowing the passage.", "hazard_reasoning": "There is a black sedan stopped in the ego lane because of a red traffic light ahead. The driver should stop now to avoid colliding with the halted vehicle and comply with the traffic signal."}
{"id": "train_07492", "split": "train", "clip_key": "titan_clip_1374_000156_movie", "source": {"subset": "titan", "scenario": "clip_1374", "frame": "000156"}, "frames": ["titan_clip_1374_000156_movie_t-3.jpg", "titan_clip_1374_000156_movie_t-2.jpg", "titan_clip_1374_000156_movie_t-1.jpg", "titan_clip_1374_000156_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian crossing ahead", "environment_perception": "A narrow urban commercial street with smooth pavement runs between buildings, lacking a marked centerline and showing very light vehicular traffic. A pedestrian wearing a white shirt, black pants, and a backpack steps from the right curb and crosses in front of the ego car from right to left, entering the ego path. Farther ahead, scattered pedestrians walk along both sidewalks and some move near the lane edge, including a small group by the left curb and others near mid-road. Orange cones on the left verge and restaurant signboards on the right line the curb without encroaching into the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a backpack, crossing the street in front of the ego car, from the right side to the left side. The driver should yield to allow the pedestrian to cross safely."}
{"id": "train_07493", "split": "train", "clip_key": "2020-0213-143552_075383_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "075383"}, "frames": ["2020-0213-143552_075383_movie_t-3.jpg", "2020-0213-143552_075383_movie_t-2.jpg", "2020-0213-143552_075383_movie_t-1.jpg", "2020-0213-143552_075383_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning truck", "environment_perception": "An urban three-lane arterial with smooth pavement runs alongside barriers separating it from other areas; traffic flows at a moderate pace. The ego vehicle follows a blue crane truck directly ahead in the center lane as it slows to turn right at the green arrow, setting the pace. A silver hatchback to the left travels slightly ahead in its adjacent lane and continues straight without entering the ego lane. On the far right beyond a striped gore, a large white box truck stands stopped with a smaller flatbed in front of it inside a side bay, creating a roadside presence but not blocking the travel lanes. Distant traffic signals mark an approaching junction.", "hazard_reasoning": "A blue truck is turning right, because of the green traffic arrow. The truck's turn may limit visibility and merge into your path, so be aware of the turning truck."}
{"id": "train_07494", "split": "train", "clip_key": "titan_clip_1343_000540_movie", "source": {"subset": "titan", "scenario": "clip_1343", "frame": "000540"}, "frames": ["titan_clip_1343_000540_movie_t-3.jpg", "titan_clip_1343_000540_movie_t-2.jpg", "titan_clip_1343_000540_movie_t-1.jpg", "titan_clip_1343_000540_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian.", "environment_perception": "An urban commercial street with trees lines a narrow two-way road without a median, and the pavement looks smooth while traffic is light with many cars parked along both curbs. A pedestrian in a white T-shirt and brown pants crosses from left to right on the zebra crossing directly ahead, moving toward the right sidewalk and momentarily occupying the ego vehicle's path. A white van stands just ahead at the right curb, stationary and narrowing the available lane. Another pedestrian walks along the right sidewalk near the storefronts, remaining off the roadway. Blue parking signs are posted on the right, and the marked crosswalk is the main control feature visible.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt and brown pants, crossing to the right side of the road. The driver should yield to the pedestrian in the crosswalk to prevent a collision."}
{"id": "train_07495", "split": "train", "clip_key": "titan_clip_858_000054_movie", "source": {"subset": "titan", "scenario": "clip_858", "frame": "000054"}, "frames": ["titan_clip_858_000054_movie_t-3.jpg", "titan_clip_858_000054_movie_t-2.jpg", "titan_clip_858_000054_movie_t-1.jpg", "titan_clip_858_000054_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban residential two-way street with edge lines and no median extends ahead, the pavement dry and smooth, and overall traffic light with no moving vehicles. At the small intersection ahead, a pedestrian wearing all black crosses from the left to the right across the ego vehicle's path, continuing steadily through the junction and briefly occupying the lane. No other road users are active nearby. A 30 speed marking is painted on the approach, and several bicycles are parked along the left curb near the corner.", "hazard_reasoning": "A pedestrian wearing all black is crossing from the left side of the intersection to the right. The driver should slow down to ensure enough stopping distance and avoid a potential collision with the crossing pedestrian."}
{"id": "train_07496", "split": "train", "clip_key": "2020-0203-154554_006739_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "006739"}, "frames": ["2020-0203-154554_006739_movie_t-3.jpg", "2020-0203-154554_006739_movie_t-2.jpg", "2020-0203-154554_006739_movie_t-1.jpg", "2020-0203-154554_006739_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane each direction approaches a signalized intersection where the ego lane curves left; a painted chevron island divides the approach and the pavement appears dry with light to moderate flow. On the left sidewalk, several pedestrians gather and walk along the guard rails near a crosswalk, staying off the roadway. A bicyclist ahead on the left moves slowly in the same direction along the curb toward the junction and could edge toward the ego lane as the bend tightens. Across the intersection, an oncoming motorcycle and several cars face the camera and wait at their stop line. From a gate on the center-right, a white microvan creeps forward toward the roadway as if preparing to merge into the near lane. Overhead traffic signals are visible.", "hazard_reasoning": "No hazards are present, but parked vehicles and roadside vegetation may obscure views, so maintain caution."}
{"id": "train_07497", "split": "train", "clip_key": "titan_clip_457_000558_movie", "source": {"subset": "titan", "scenario": "clip_457", "frame": "000558"}, "frames": ["titan_clip_457_000558_movie_t-3.jpg", "titan_clip_457_000558_movie_t-2.jpg", "titan_clip_457_000558_movie_t-1.jpg", "titan_clip_457_000558_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian ahead", "environment_perception": "An urban back street is shown, a narrow two-way road with no centerline and smooth pavement; traffic is very light as the ego vehicle advances slowly. Ahead on the left, a pedestrian in a white shirt and brown pants walks toward the ego car along the roadway because a white van is parked there, and he may edge into the travel path. The white van is stopped at the left curb and protrudes into the lane, constraining the passage. At the near right curb, another van or small truck stands stationary, further narrowing the corridor but not affecting movement beyond the immediate vicinity.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and brown pants, walking on the left side of the road, towards the ego car, because of the parked vehicle. Therefore, the driver should be cautious as the pedestrian may suddenly enter the driving lane."}
{"id": "train_07498", "split": "train", "clip_key": "2020-0218-151547_007983_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "007983"}, "frames": ["2020-0218-151547_007983_movie_t-3.jpg", "2020-0218-151547_007983_movie_t-2.jpg", "2020-0218-151547_007983_movie_t-1.jpg", "2020-0218-151547_007983_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "In a dense urban center, the ego car waits at a signalized multi-lane intersection on smooth pavement with painted medians, and traffic is moderate as cross traffic flows while our direction is stopped. A black motorcycle is immediately ahead in the ego lane, stationary at the stop line because the light is red, so it dictates the ego vehicle's pace. To the left across the junction, a red-striped bus moves along the cross street through the intersection. Ahead-right in the oncoming lanes, a coach bus and several cars continue straight, remaining separate from the ego path. The signal facing the ego shows red.", "hazard_reasoning": "There is a black motorcycle that has stopped in front of the ego car in the ego lane, because the light is red. The driver must stop to avoid a collision and comply with the red light signal."}
{"id": "train_07499", "split": "train", "clip_key": "titan_clip_1377_000528_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1377_000528_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1377_000528_movie_t-3_augB1.jpg", "titan_clip_1377_000528_movie_t-2_augB1.jpg", "titan_clip_1377_000528_movie_t-1_augB1.jpg", "titan_clip_1377_000528_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around her", "environment_perception": "An urban neighborhood street with a single narrow lane and no median appears, the pavement is smooth and traffic is light. A woman in a blue shirt and black pants carrying a handbag walks toward the ego-vehicle from the left side within the ego lane near a parked van, encroaching on the path and constraining pace. A white van is stopped along the left curb partially in the lane, narrowing the available space. Far ahead, a small white van in the same direction proceeds along the street. A blue straight-ahead traffic sign stands on the right, and bicycles and scooters are parked at the right edge.", "hazard_reasoning": "There is a woman wearing a blue shirt, black pants, and carrying a handbag, walking towards the ego-car, on the left side of the road, in the ego lane. The driver should carefully manoeuvre around her to avoid a collision since she is entering the vehicle's path."}
{"id": "train_07500", "split": "train", "clip_key": "2020-0129-105040_045725_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "045725"}, "frames": ["2020-0129-105040_045725_movie_t-3.jpg", "2020-0129-105040_045725_movie_t-2.jpg", "2020-0129-105040_045725_movie_t-1.jpg", "2020-0129-105040_045725_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road runs under an elevated expressway, with a right-side guardrail separating a parallel roadway; the pavement is dry and traffic is moderate and steady. A white van ahead in the ego lane drives away from the camera, continuing straight and setting the following distance. To the left, a large dark truck travels alongside and slightly ahead in the adjacent lane, curbing any immediate left merge. Farther ahead in the left lane, two small cars proceed straight at a similar pace, forming a moving queue beside the ego vehicle.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07501", "split": "train", "clip_key": "2020-0220-151845_059619_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "059619"}, "frames": ["2020-0220-151845_059619_movie_t-3.jpg", "2020-0220-151845_059619_movie_t-2.jpg", "2020-0220-151845_059619_movie_t-1.jpg", "2020-0220-151845_059619_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway segment runs under an overhead structure, with multiple same-direction lanes beside a striped buffer; the pavement is dry and traffic is moderate. Ahead in the ego lane, a flatbed truck with a covered load slows in front of the car, constraining the pace. To the right, a black sedan in the adjacent lane travels steadily and draws ahead. Farther right beyond the buffer, a white kei van is stopped near a pillar and remains stationary. Guardrails line the left wall and taper markings narrow the left lane.", "hazard_reasoning": "There is a red pickup truck slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_07502", "split": "train", "clip_key": "2020-0203-114632_078427_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "078427"}, "frames": ["2020-0203-114632_078427_movie_t-3.jpg", "2020-0203-114632_078427_movie_t-2.jpg", "2020-0203-114632_078427_movie_t-1.jpg", "2020-0203-114632_078427_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction and a solid center line approaches a signalized crosswalk; the pavement is smooth and traffic is light. A white minivan directly ahead in the ego lane slows near the crosswalk because a small white car is parked along the left curb just beyond it, narrowing the usable lane. An oncoming black SUV proceeds straight in its lane to the right of the center line as it passes the intersection, occupying the opposing stream while the minivan remains slow. The parked car on the left acts as a brief roadside obstruction, with no other hazards evident.", "hazard_reasoning": "There is a white minivan slowing in front of the ego car, in the ego lane, because of a vehicle parked on the left side of the road. The driver should slow down to maintain a safe distance and avoid a potential rear-end collision."}
{"id": "train_07503", "split": "train", "clip_key": "2020-0207-151349_027430_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "027430"}, "frames": ["2020-0207-151349_027430_movie_t-3.jpg", "2020-0207-151349_027430_movie_t-2.jpg", "2020-0207-151349_027430_movie_t-1.jpg", "2020-0207-151349_027430_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane street with left-hand traffic runs between tall buildings; the ego car is in the leftmost lane by the curb, the pavement is dry, and traffic is heavy and mostly stationary. A gray box truck is directly ahead in the ego lane and remains stopped, blocking the lane and constraining the ego car's pace. In the adjacent right lane, a silver sedan alongside to slightly ahead waits in the queue, limiting room for a lane change. Farther right, a dark car is also stopped with little gap to the sedan. A metal railing lines the left sidewalk, and strong sun glare from ahead reduces contrast.", "hazard_reasoning": "There is a gray truck stopped in the ego lane in front of the ego car. The stopped truck ahead blocks the lane and could cause a collision if not addressed."}
{"id": "train_07504", "split": "train", "clip_key": "titan_clip_649_000120_movie", "source": {"subset": "titan", "scenario": "clip_649", "frame": "000120"}, "frames": ["titan_clip_649_000120_movie_t-3.jpg", "titan_clip_649_000120_movie_t-2.jpg", "titan_clip_649_000120_movie_t-1.jpg", "titan_clip_649_000120_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of pedestrian exiting vehicle", "environment_perception": "An urban residential street appears, a narrow two-way road with no median or centerline and smooth pavement, with very light traffic throughout. Ahead on the left curb, a silver van is parked, and a pedestrian exits from its right side into the ego lane, briefly occupying the path. No other moving vehicles are visible in the same or oncoming direction. A fenced work area with orange cones lines the right shoulder, slightly narrowing the roadway.", "hazard_reasoning": "There is a silver van parked on the left side of the road, with a pedestrian exiting the vehicle, into the ego lane. The pedestrian may step into the travel lane unexpectedly, so the driver should be aware to avoid a potential collision."}
{"id": "train_07505", "split": "train", "clip_key": "2020-0129-105040_093452_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "093452"}, "frames": ["2020-0129-105040_093452_movie_t-3.jpg", "2020-0129-105040_093452_movie_t-2.jpg", "2020-0129-105040_093452_movie_t-1.jpg", "2020-0129-105040_093452_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes runs past trees and a planted median that separates oncoming traffic; the pavement is clean and dry. Traffic is moderate to heavy, forming a short queue toward the next intersection. A white kei truck directly ahead in the ego lane is stationary because of congestion ahead, holding the ego vehicle. Farther ahead in the same lane, a large blue truck remains stopped, keeping the line halted near the signal. In the left adjacent lane, a black sedan alongside slows with the queue, limiting an easy lane change. Overhead traffic signals are visible, and a right-turn-only lane runs along the right.", "hazard_reasoning": "There is a white truck in front of the ego car that has stopped because of traffic congestion ahead. The driver should stop to avoid rear-ending the halted truck and maintain a safe following distance under this situation to prevent a collision."}
{"id": "train_07506", "split": "train", "clip_key": "2020-0203-114632_053892_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "053892"}, "frames": ["2020-0203-114632_053892_movie_t-3.jpg", "2020-0203-114632_053892_movie_t-2.jpg", "2020-0203-114632_053892_movie_t-1.jpg", "2020-0203-114632_053892_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multilane arterial approaches a signalized intersection, with good pavement, red-painted channelized sections, and chevron dividers; traffic is moderate and bunches near the junction. A silver hatchback directly ahead in the ego lane is stopped because congestion builds beyond the intersection, holding the ego vehicle. A white van runs alongside on the left in an adjacent lane and edges forward next to the ego car, constraining lateral space. On the right, a scooter proceeds along the curved red lane and continues ahead of the queue. Overhead traffic signals and blue directional signs are visible above the junction.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain safe distance and avoid rear-ending the halted vehicle."}
{"id": "train_07507", "split": "train", "clip_key": "2020-0204-150838_018274_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "018274"}, "frames": ["2020-0204-150838_018274_movie_t-3.jpg", "2020-0204-150838_018274_movie_t-2.jpg", "2020-0204-150838_018274_movie_t-1.jpg", "2020-0204-150838_018274_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane roadway with smooth pavement runs past office buildings on the left and a landscaped edge on the right, and traffic is moderate and generally steady. A white van ahead in the ego lane slows, so the ego car follows its pace. In the adjacent right lane, another white van slightly ahead continues straight at a steady speed, occupying the space for an immediate lane change. Along the left curb near the building, a black sedan is stopped close to the travel lane and may pull out.", "hazard_reasoning": "There is a white van slowing in front of the ego car, in the ego lane. The driver should slow down to maintain a safe distance and avoid a potential rear-end collision due to the slowing vehicle ahead."}
{"id": "train_07508", "split": "train", "clip_key": "titan_clip_605_000564_movie", "source": {"subset": "titan", "scenario": "clip_605", "frame": "000564"}, "frames": ["titan_clip_605_000564_movie_t-3.jpg", "titan_clip_605_000564_movie_t-2.jpg", "titan_clip_605_000564_movie_t-1.jpg", "titan_clip_605_000564_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield for the crossing pedestrian", "environment_perception": "A narrow urban street with a single lane in each direction curves gently left, with no median and smooth pavement; vehicle flow is light and no oncoming cars appear. A white box truck stands ahead near the left curb in the ego lane, constraining the available path and slowing the approach. On the right edge, a pedestrian wearing a blue shirt and gray shorts walks toward the ego vehicle along the roadside, close enough that he may step into the lane. Farther ahead on the right, several other pedestrians walk away near the curb and shopfronts, staying near the lane boundary. A turquoise van is parked on the left partially intruding into the lane, further narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and gray shorts, walking toward the ego car, on the right side of the road. The pedestrian's trajectory may cross the vehicle's path unexpectedly, so the driver should yield to prevent a collision."}
{"id": "train_07509", "split": "train", "clip_key": "titan_clip_981_000432_movie", "source": {"subset": "titan", "scenario": "clip_981", "frame": "000432"}, "frames": ["titan_clip_981_000432_movie_t-3.jpg", "titan_clip_981_000432_movie_t-2.jpg", "titan_clip_981_000432_movie_t-1.jpg", "titan_clip_981_000432_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist.", "environment_perception": "An urban, narrow two-way street with single lanes and no median is lined by close storefronts on rough stone pavement, and no oncoming vehicles are visible as traffic flows slowly. A white box truck ahead in the ego lane continues straight at low speed, setting the pace and obscuring the view of a right-side junction. On the right ahead, a woman in a white shirt and black skirt cycles along the curb toward the side road on the right, drawing near the truck where she may cross its path. Ahead left, a pedestrian in light clothing walks in the roadway near the centerline, reducing available space.", "hazard_reasoning": "There is a woman wearing a white shirt and a black skirt and cycling on the right side of the road, toward the road on the right side. The cyclist may cross into the vehicle's path at the intersection, so the driver should be aware to avoid a collision."}
{"id": "train_07510", "split": "train", "clip_key": "2020-0204-150838_068137_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "068137"}, "frames": ["2020-0204-150838_068137_movie_t-3.jpg", "2020-0204-150838_068137_movie_t-2.jpg", "2020-0204-150838_068137_movie_t-1.jpg", "2020-0204-150838_068137_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with two same-direction lanes is bounded by concrete barriers, the pavement is smooth, and traffic flows at a moderate, steady pace. Ahead in the ego lane, a gray truck drives away from the ego car, gradually widening the gap and effectively setting the headway. In the left lane, a black minivan runs alongside and then edges ahead, overtaking while remaining in its lane and posing no immediate encroachment. Farther ahead in the left lane, another cargo truck continues steadily in its lane with no interaction with the ego vehicle, and no salient traffic signals or hazards appear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07511", "split": "train", "clip_key": "2020-0220-102630_007886_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "007886"}, "frames": ["2020-0220-102630_007886_movie_t-3.jpg", "2020-0220-102630_007886_movie_t-2.jpg", "2020-0220-102630_007886_movie_t-1.jpg", "2020-0220-102630_007886_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way multilane street approaches a wide signalized intersection with no median and smooth asphalt; traffic in the ego's direction is queued and stopped for a red light while cross-traffic moves through. A silver sedan directly ahead in the ego lane is stopped because of the red signal and indicates a right turn, holding the ego car. A pedestrian ahead slightly left walks across the crosswalk from left to right in front of the queue, affecting any turning movement. A cyclist near the left curb rolls slowly toward the crosswalk and may enter the intersection once the signal changes. The overhead signal shows red for the ego approach.", "hazard_reasoning": "There is a silver sedan stopped becuase of a red traffic light, signaling right, in front of the ego car, in the ego lane. The driver must stop to avoid a collision with the halted sedan."}
{"id": "train_07512", "split": "train", "clip_key": "2020-0207-151349_034157_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "034157"}, "frames": ["2020-0207-151349_034157_movie_t-3.jpg", "2020-0207-151349_034157_movie_t-2.jpg", "2020-0207-151349_034157_movie_t-1.jpg", "2020-0207-151349_034157_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with stopped motorcycle", "environment_perception": "An urban multilane road runs under elevated expressways, with two same-direction lanes and a concrete barrier on the right; the pavement is dry and traffic is slow and congested. Ahead in the ego lane, a black motorcycle is stopped due to congestion, directly blocking the ego vehicle's path. Slightly farther ahead in the same lane, a small silver mini-truck also stands still near the curb, adding to the queue. In the adjacent right lane, a coach followed by a taxi creeps forward in line, keeping the flow slow and limiting gaps for movement.", "hazard_reasoning": "There is a black motorcycle stopped in the ego lane, because of traffic congestion ahead. The stopped motorcycle blocks the lane, so you need to stop to avoid a collision."}
{"id": "train_07513", "split": "train", "clip_key": "2020-0214-145407_018576_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "018576"}, "frames": ["2020-0214-145407_018576_movie_t-3.jpg", "2020-0214-145407_018576_movie_t-2.jpg", "2020-0214-145407_018576_movie_t-1.jpg", "2020-0214-145407_018576_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane road with smooth, dry pavement carries moderate same-direction traffic as the camera car proceeds straight. A white box truck ahead in the ego lane slows, constraining the ego car's pace. To the left, a black car runs nearly alongside in the adjacent lane with little speed difference, limiting an immediate move left. To the right, a black minivan edges slightly ahead in the outer lane while maintaining course, so a rightward lane change is not open. Farther ahead, more vehicles continue steadily, and no salient signals or obstacles appear.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane. The truck's deceleration reduces the headway, so slowing down promptly will help maintain a safe following distance."}
{"id": "train_07514", "split": "train", "clip_key": "titan_clip_21_000228_movie", "source": {"subset": "titan", "scenario": "clip_21", "frame": "000228"}, "frames": ["titan_clip_21_000228_movie_t-3.jpg", "titan_clip_21_000228_movie_t-2.jpg", "titan_clip_21_000228_movie_t-1.jpg", "titan_clip_21_000228_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully", "environment_perception": "A narrow urban street lined with shops and mid-rise buildings has smooth pavement, light traffic, and parked vehicles along both curbs. On the right, a gray delivery truck is stopped with its rear door open for offloading, intruding into the ego vehicle's path and narrowing the usable roadway. Ahead near the center, a pedestrian in dark clothing walks from left toward the truck, crossing the roadway and potentially entering the ego path. A white van stands parked on the left just ahead in a marked bay, further tightening the space available to pass.", "hazard_reasoning": "There is a gray truck, stopped on the right side of the road, in the ego lane, because it is being offloaded. Drivers should manoeuvre carefully around the stationary truck to avoid collision and maintain safe traffic flow."}
{"id": "train_07515", "split": "train", "clip_key": "titan_clip_151_000348_movie", "source": {"subset": "titan", "scenario": "clip_151", "frame": "000348"}, "frames": ["titan_clip_151_000348_movie_t-3.jpg", "titan_clip_151_000348_movie_t-2.jpg", "titan_clip_151_000348_movie_t-1.jpg", "titan_clip_151_000348_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van", "environment_perception": "An urban side street with a single narrow lane and no centerline runs straight between buildings; the pavement looks smooth and traffic is light with no moving vehicles nearby. A black van ahead on the left is parked with its rear door open as it is being unloaded, encroaching into the travel lane and narrowing the space for the ego vehicle. A dark sedan is parked on the left near the ego car, and additional parked vehicles line the left curb farther ahead, further tightening the corridor. No oncoming traffic or signals are visible. A metal guardrail borders the right side with a white bicycle locked to it, and closely spaced trees and shopfronts confine the roadway.", "hazard_reasoning": "There is a black van parked on the left side of the road, because it is being unloaded. The driver should be aware of the parked van as it may re-enter traffic or workers might step into the lane, creating a potential hazard."}
{"id": "train_07516", "split": "train", "clip_key": "2020-0210-155354_000130_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "000130"}, "frames": ["2020-0210-155354_000130_movie_t-3.jpg", "2020-0210-155354_000130_movie_t-2.jpg", "2020-0210-155354_000130_movie_t-1.jpg", "2020-0210-155354_000130_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban commercial street with one narrow lane each way shows smooth pavement and moderate, slow-moving traffic separated only by painted lines. A white SUV immediately ahead in the ego lane creeps forward and brakes, constraining the ego car's pace. A pedestrian in a black jacket is in the roadway ahead near the SUV, walking across the ego lane and potentially entering the car's path. A small white van just ahead near the center line edges left toward the ego lane, preparing to merge and narrowing the gap in front. Oncoming cars, including a dark van, pass steadily in the opposite lane to the right, limiting merging opportunities and keeping the flow cautious.", "hazard_reasoning": "There is a pedestrian wearing a black jacket, walking directly in front of the ego car. The driver must stop immediately to avoid a collision with the pedestrian crossing directly ahead."}
{"id": "train_07517", "split": "train", "clip_key": "2020-0225-102455_023525_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "023525"}, "frames": ["2020-0225-102455_023525_movie_t-3.jpg", "2020-0225-102455_023525_movie_t-2.jpg", "2020-0225-102455_023525_movie_t-1.jpg", "2020-0225-102455_023525_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist", "environment_perception": "An urban multi-lane arterial with two lanes in each direction runs between tall buildings, the directions divided by a low rail median. Pavement is dry and smooth, and same-direction traffic is moderate and slow-moving while oncoming lanes are steady. Ahead in the ego lane, a silver car rolls at low speed and sets the pace. At the left curb just ahead, a white van is stopped with its rear doors open as a person handles cargo, blocking part of the curb lane. Near this van, a cyclist in a purple coat rides out from the left lane toward the ego lane to avoid a parked hatchback, moving into the ego path. Farther right, a queue of vehicles in the opposite direction continues past without interaction.", "hazard_reasoning": "There is a cyclist wearing a purple coat, cycling, and changing lanes from the left lane to the ego lane, because they are avoiding a parked hatchback. The cyclist's lane change may bring them into the vehicle's path unexpectedly, so the driver should yield to avoid collision."}
{"id": "train_07518", "split": "train", "clip_key": "2020-0203-154554_039730_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_039730_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_039730_movie_t-3_augB1.jpg", "2020-0203-154554_039730_movie_t-2_augB1.jpg", "2020-0203-154554_039730_movie_t-1_augB1.jpg", "2020-0203-154554_039730_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane road runs under an elevated expressway with a right-side guardrail and smooth pavement; traffic is moderate and slows slightly near the underpass. A white box truck directly ahead in the ego lane slows due to congestion ahead and sets the pace for the ego vehicle. A small pickup in the right lane draws level and continues steadily beside the truck, reducing lateral clearance for a lane change. Several cars in the left lane proceed past the slowing vehicles and merge into a developing queue farther ahead. Temporary barriers line the left sidewalk but stay off the roadway.", "hazard_reasoning": "There is a truck that is slowing down in the ego lane due to traffic congestion ahead. Therefore, the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_07519", "split": "train", "clip_key": "titan_clip_431_000534_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_431_000534_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_431_000534_movie_t-3_augB1.jpg", "titan_clip_431_000534_movie_t-2_augB1.jpg", "titan_clip_431_000534_movie_t-1_augB1.jpg", "titan_clip_431_000534_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban two-lane two-way street runs between mid-rise buildings with smooth pavement and moderate, steady oncoming flow. On the left just ahead, a silver van is stopped partly in the ego lane with its side door open, and a pedestrian in a striped T-shirt and black pants walks away in the middle of the road while attending to that vehicle, momentarily blocking the ego path. Slightly farther ahead in the same lane, a blue car is pulled over and waits near the curb, narrowing the passage. In the opposite lane, a black sedan approaches at low speed toward the camera, limiting room for the ego vehicle to maneuver around the roadside obstruction.", "hazard_reasoning": "There is a pedestrian wearing a striped t-shirt and black pants, walking in the middle of the road, away from the ego car, because they are attending their vehicle. The pedestrian's position in the travel lane poses a collision risk, so the driver should manoeuvre carefully around them."}
{"id": "train_07520", "split": "train", "clip_key": "2020-0212-102546_079975_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "079975"}, "frames": ["2020-0212-102546_079975_movie_t-3.jpg", "2020-0212-102546_079975_movie_t-2.jpg", "2020-0212-102546_079975_movie_t-1.jpg", "2020-0212-102546_079975_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck's lane change", "environment_perception": "An urban divided arterial curves right with two lanes in the ego direction, a raised median on the right, and smooth pavement; traffic appears moderate. A white mini-truck directly ahead in the ego lane signals and moves into the right lane, opening space in front of the ego vehicle. Farther ahead, a black car continues in the right lane at a similar pace, potentially setting the flow once the truck merges. On the opposite carriageway to the right, several trucks and cars travel as oncoming traffic, separated by the median. At the left-side path, a pedestrian signal shows red and a nearby sign prohibits bicycles from entering.", "hazard_reasoning": "A white truck in front of the ego car is changing to the right lane. The driver should be aware because the truck may encroach into the ego vehicle's path during its lane change."}
{"id": "train_07521", "split": "train", "clip_key": "titan_clip_440_000420_movie", "source": {"subset": "titan", "scenario": "clip_440", "frame": "000420"}, "frames": ["titan_clip_440_000420_movie_t-3.jpg", "titan_clip_440_000420_movie_t-2.jpg", "titan_clip_440_000420_movie_t-1.jpg", "titan_clip_440_000420_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban street with block-paved surface forms an effectively single shared lane with no divider, and the ego vehicle proceeds slowly with light traffic. Parked service vehicles line the left side and constrict the lane. A gray van is stopped on the left in the ego lane, narrowing the available space as the ego approaches. Farther ahead, a box truck stands along the left curb, further squeezing the passage and constraining the approach speed. On the right, several pedestrians walk along the sidewalk, one near the curb and another in the roadway ahead moving away, creating close clearance to the ego path.", "hazard_reasoning": "There is a gray van stopped on the left side of the road, in the ego lane. The stationary van obstructs the lane and limits forward visibility, increasing the risk of collision; the driver should carefully manoeuvre around it to maintain safety."}
{"id": "train_07522", "split": "train", "clip_key": "titan_clip_419_000516_movie", "source": {"subset": "titan", "scenario": "clip_419", "frame": "000516"}, "frames": ["titan_clip_419_000516_movie_t-3.jpg", "titan_clip_419_000516_movie_t-2.jpg", "titan_clip_419_000516_movie_t-1.jpg", "titan_clip_419_000516_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "A narrow urban one-lane shared street with block-paved surface and no divider runs between buildings and trees; the pavement looks smooth and motor traffic is light while pedestrians are frequent. Ahead in the ego lane, a man wearing a striped shirt and black pants, carrying a bag and a cane, crosses slowly toward the left edge without a crosswalk, directly occupying the vehicle's path. Along the right edge near the curb, two pedestrians holding umbrellas walk toward the camera within the roadway, reducing the available space beside the ego vehicle. On the left side near the buildings, another pedestrian with an umbrella walks away along the edge while a person with a stroller stands near the curb, close to the lane.", "hazard_reasoning": "There's a man, wearing a striped shirt and black pants, and carrying a bag and a cane, crossing the street toward the left side of the road, in the ego lane, because there's no crosswalk. The pedestrian is crossing outside a crosswalk in the vehicle's path, so you must stop immediately to avoid a collision."}
{"id": "train_07523", "split": "train", "clip_key": "2020-0205-152530_009136_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "009136"}, "frames": ["2020-0205-152530_009136_movie_t-3.jpg", "2020-0205-152530_009136_movie_t-2.jpg", "2020-0205-152530_009136_movie_t-1.jpg", "2020-0205-152530_009136_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with dry pavement and strong sun glare carries heavy, stop-and-go traffic; there is no visible median and lanes split slightly ahead. A sedan directly ahead in the ego lane remains stopped because traffic is queued ahead, holding the ego vehicle in place. In the adjacent right lane a black minivan farther ahead creeps forward with the line of cars, limiting chances to merge. On the near left a silver car sits slightly ahead along the curb in its lane, waiting beside the ego vehicle.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, in the ego lane, because of traffic congestion aheads. The driver should stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_07524", "split": "train", "clip_key": "2020-0131-135401_003866_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003866"}, "frames": ["2020-0131-135401_003866_movie_t-3.jpg", "2020-0131-135401_003866_movie_t-2.jpg", "2020-0131-135401_003866_movie_t-1.jpg", "2020-0131-135401_003866_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one lane in each direction has smooth pavement and light traffic; the ego vehicle travels in the left lane and the oncoming lane is clear. A white box truck directly ahead in the ego lane remains stopped, blocking the path and causing the ego car to wait. Two pedestrians are on the left sidewalk ahead, walking away from the road and not approaching the carriageway. An overhead sign displays a 40 speed limit. Buildings line the left side and a guardrail borders the right, with strong sunlight creating glare but no other obstacles.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane. The stationary truck poses a collision risk if you do not stop in time, so you should stop immediately to avoid a rear-end accident."}
{"id": "train_07525", "split": "train", "clip_key": "2020-0213-143552_080437_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "080437"}, "frames": ["2020-0213-143552_080437_movie_t-3.jpg", "2020-0213-143552_080437_movie_t-2.jpg", "2020-0213-143552_080437_movie_t-1.jpg", "2020-0213-143552_080437_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A single-lane urban expressway ramp runs between tall noise barriers, with a guardrail median on the right and smooth dark pavement; traffic is light as the lane bends gently left. A large work truck ahead in the ego lane moves at a slow, steady pace, constraining the ego's speed. Farther ahead, another truck continues in the same lane, keeping the flow subdued. An overhead gantry spans the roadway, and on the right shoulder a small orange warning beacon with two crash barrels sits just beyond the guardrail, marking roadside equipment; no oncoming lanes are visible due to the separated carriageways.", "hazard_reasoning": "No hazards are present in this scene; the road is unobstructed and traffic is light, so no special driver warning is required."}
{"id": "train_07526", "split": "train", "clip_key": "titan_clip_370_000096_movie", "source": {"subset": "titan", "scenario": "clip_370", "frame": "000096"}, "frames": ["titan_clip_370_000096_movie_t-3.jpg", "titan_clip_370_000096_movie_t-2.jpg", "titan_clip_370_000096_movie_t-1.jpg", "titan_clip_370_000096_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of parked van ahead", "environment_perception": "An urban neighborhood street with closely spaced buildings appears as a narrow two-way road without a median, smooth pavement, and very light traffic. A white van is parked along the left curb ahead, stationary and protruding slightly into the ego lane, narrowing the passage and likely constraining the ego vehicle's path as it approaches. No other moving vehicles or controls are salient in view.", "hazard_reasoning": "There is a white van parked on the left side of the road. The parked van may reduce available road space and could re-enter traffic unexpectedly, so the driver should stay alert."}
{"id": "train_07527", "split": "train", "clip_key": "titan_clip_837_000288_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_837_000288_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_837_000288_movie_t-3_augB1.jpg", "titan_clip_837_000288_movie_t-2_augB1.jpg", "titan_clip_837_000288_movie_t-1_augB1.jpg", "titan_clip_837_000288_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow single-lane carriageway has no divider and block-paved surface in good condition; traffic is light and slow. Ahead, a pedestrian wearing a cap and a striped shirt crosses midblock from right to left in the middle of the road, moving across the ego path. Farther ahead, a small van in the same direction proceeds slowly along the center of the street, loosely setting the pace. On the near right, a white station wagon is stopped at the curb with its rear protruding, narrowing the available lane. Bicycles are parked along storefronts and there are no visible traffic signals.", "hazard_reasoning": "There is a pedestrian wearing a cap and a striped shirt, crossing the street in the middle of the road, from the right side to the left side. The pedestrian may enter the vehicle's path unexpectedly, so the driver should slow down to ensure safe passage."}
{"id": "train_07528", "split": "train", "clip_key": "2020-0204-103442_006920_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "006920"}, "frames": ["2020-0204-103442_006920_movie_t-3.jpg", "2020-0204-103442_006920_movie_t-2.jpg", "2020-0204-103442_006920_movie_t-1.jpg", "2020-0204-103442_006920_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban arterial with smooth pavement carries multiple same-direction lanes beside a red bus lane and fenced sidewalk on the left, and traffic flows slowly under heavy congestion. A black SUV directly ahead in the ego lane slows because of congestion and sets the ego vehicle's pace. To the right, a small black van runs slightly ahead in the adjacent lane and creeps forward, limiting an easy merge. Farther ahead in the right lanes, several large buses queue and brake as they approach the jam, keeping the flow compressed. Pedestrians move along the separated walkway to the left, and no oncoming traffic is visible.", "hazard_reasoning": "There is a black SUV slowing in the ego lane, because of traffic congestion ahead. The reduced speed signals potential for sudden deceleration, so the driver should slow down to maintain a safe following distance."}
{"id": "train_07529", "split": "train", "clip_key": "2020-0220-102630_022118_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "022118"}, "frames": ["2020-0220-102630_022118_movie_t-3.jpg", "2020-0220-102630_022118_movie_t-2.jpg", "2020-0220-102630_022118_movie_t-1.jpg", "2020-0220-102630_022118_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of lane change ahead", "environment_perception": "An urban arterial with two same-direction lanes is bordered by buildings and a metal-railed median separating oncoming traffic; the asphalt is smooth and traffic is slow-moving. A white sedan just ahead moves from the ego lane to the right lane, crossing the dashed line and merging in front of the ego car. A tall box truck directly ahead in the ego lane is stopped, constraining the pace. In the right lane slightly farther ahead, a small covered truck rolls slowly, and the merging sedan positions ahead of it. Oncoming vehicles travel separately beyond the median.", "hazard_reasoning": "There is a white sedan lane-changing in front of the ego car to the right lane. The sedan's upcoming lane change could reduce your maneuvering space, so you should be aware of its movement."}
{"id": "train_07530", "split": "train", "clip_key": "2020-0227-104226_018589_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "018589"}, "frames": ["2020-0227-104226_018589_movie_t-3.jpg", "2020-0227-104226_018589_movie_t-2.jpg", "2020-0227-104226_018589_movie_t-1.jpg", "2020-0227-104226_018589_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "Under an elevated roadway, the ego car is on a multi-lane urban arterial with dry pavement and heavy stop-and-go traffic. A white van is stopped directly ahead in the ego lane because of congestion ahead, holding the ego vehicle. To the left, a blue hatchback creeps forward in the adjacent lane alongside the ego car in the same direction. Farther left, a line of cars remains queued ahead, keeping speeds low across lanes. Overhead blue direction signs show straight arrows, and a guardrail with support pillars lines the right edge.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver needs to stop promptly to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_07531", "split": "train", "clip_key": "2020-0204-103442_074030_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "074030"}, "frames": ["2020-0204-103442_074030_movie_t-3.jpg", "2020-0204-103442_074030_movie_t-2.jpg", "2020-0204-103442_074030_movie_t-1.jpg", "2020-0204-103442_074030_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane per direction and a painted centerline stretches ahead on smooth pavement, with moderate traffic that bunches further up the road. A blue sedan directly ahead in the ego lane slows because of traffic congestion ahead. Farther in front, a dump truck in the same lane crawls and creates the queue, constraining the ego vehicle's pace. On the left, a white van waits at a side access road and could merge later, but it remains stationary during the scene.", "hazard_reasoning": "There is a blue sedan slowing in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision under these conditions."}
{"id": "train_07532", "split": "train", "clip_key": "titan_clip_1014_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1014_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1014_000204_movie_t-3_augB1.jpg", "titan_clip_1014_000204_movie_t-2_augB1.jpg", "titan_clip_1014_000204_movie_t-1_augB1.jpg", "titan_clip_1014_000204_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing to the right", "environment_perception": "A dense urban shopping street with a narrow single travel lane, no center divider, and smooth asphalt shows very light vehicle traffic. Bollards and storefronts line both sides, and a zebra crossing is visible at the right corner. Several pedestrians ahead are in the roadway, crossing in both directions and occupying the ego path, constraining the available space. A pedestrian wearing white clothing crosses the road toward the right side in front of the ego vehicle, remaining directly relevant as they traverse the lane. On the near right, a person with an umbrella waits at the zebra crossing and may step into the lane.", "hazard_reasoning": "There is a pedestrian wearing white clothing, crossing the road to the right side. The pedestrian could enter the vehicle's path unexpectedly, so be aware and prepare to adjust speed."}
{"id": "train_07533", "split": "train", "clip_key": "2020-0210-101957_038208_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "038208"}, "frames": ["2020-0210-101957_038208_movie_t-3.jpg", "2020-0210-101957_038208_movie_t-2.jpg", "2020-0210-101957_038208_movie_t-1.jpg", "2020-0210-101957_038208_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban four-lane two-way road with guardrails on both sides, dry pavement, and light traffic approaches a signalized intersection. A black hatchback directly ahead in the ego lane is stopped at the stop line because the traffic light is red, temporarily constraining the ego vehicle. On the left sidewalk near the intersection, a bicyclist rides forward parallel to the road and nears the crosswalk. A few oncoming cars move through their lanes on the right side of the roadway beyond the intersection without stopping. Overhead signals and the marked crosswalk are clearly visible.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver must stop to maintain a safe distance from the halted vehicle and comply with the red signal."}
{"id": "train_07534", "split": "train", "clip_key": "titan_clip_1347_000234_movie", "source": {"subset": "titan", "scenario": "clip_1347", "frame": "000234"}, "frames": ["titan_clip_1347_000234_movie_t-3.jpg", "titan_clip_1347_000234_movie_t-2.jpg", "titan_clip_1347_000234_movie_t-1.jpg", "titan_clip_1347_000234_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban cobblestone street with no marked lanes or centerline stretches ahead between midrise buildings, lined with trees and planters; the pavement looks smooth and there is no moving vehicular traffic. A pedestrian on the right near the storefront walks along the sidewalk parallel to the roadway, remaining near the curb. Several people on the left plaza area sit on benches and linger by planters, staying off the carriageway. Farther ahead the roadway stays clear with only distant foot traffic. A red circular restriction sign is posted on a pole to the left. Parked items include a white van under the left arcade and several bicycles at the right curb, but they do not affect the open lane.", "hazard_reasoning": "No caption provided. There are no imminent hazards detected, but the driver should remain aware of pedestrians near the roadway in case they step into traffic unexpectedly."}
{"id": "train_07535", "split": "train", "clip_key": "2020-0131-135401_007941_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "007941"}, "frames": ["2020-0131-135401_007941_movie_t-3.jpg", "2020-0131-135401_007941_movie_t-2.jpg", "2020-0131-135401_007941_movie_t-1.jpg", "2020-0131-135401_007941_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "A narrow urban two-way road without a median runs past buildings on the left and a fence on the right; the pavement looks smooth and traffic is halted. A white box truck is stopped directly ahead in the ego lane, blocking the path and controlling progress. Several small white vans are parked along the left curb, stationary and narrowing the passage. No other moving vehicles are visible ahead, and no salient signals or signs appear in view. Bright sun glare from the upper right reduces contrast.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The stationary truck directly ahead creates a collision hazard if the driver does not brake promptly, so the driver should stop immediately."}
{"id": "train_07536", "split": "train", "clip_key": "titan_clip_732_000588_movie", "source": {"subset": "titan", "scenario": "clip_732", "frame": "000588"}, "frames": ["titan_clip_732_000588_movie_t-3.jpg", "titan_clip_732_000588_movie_t-2.jpg", "titan_clip_732_000588_movie_t-1.jpg", "titan_clip_732_000588_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrians waiting to cross", "environment_perception": "An urban commercial street with two lanes in the same direction has no median and smooth dry pavement, and traffic is light. Two pedestrians wearing white shirts and black pants stand at the crosswalk on the left, waiting to cross and potentially enter the ego lane. A man in a dark shirt walks toward the camera along the left sidewalk beside the guardrail without stepping into the roadway. Far ahead, a white car and another vehicle continue away in the right lane, moving steadily and not constraining the ego vehicle. A blue no-parking sign on a pole to the left is visible.", "hazard_reasoning": "There are two pedestrians wearing white shirts and black pants, standing on a crosswalk to the left, and waiting to cross the road. They may step onto the roadway ahead, requiring the driver to be prepared to slow down and yield."}
{"id": "train_07537", "split": "train", "clip_key": "2020-0203-114632_093715_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "093715"}, "frames": ["2020-0203-114632_093715_movie_t-3.jpg", "2020-0203-114632_093715_movie_t-2.jpg", "2020-0203-114632_093715_movie_t-1.jpg", "2020-0203-114632_093715_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road runs beneath an elevated structure, with a single smooth lane in the ego direction bounded by a planted median on the left and a curb and fence on the right; traffic is light. A white van ahead in the ego lane continues straight and gradually pulls away from the ego car while keeping to its lane. No pedestrians, cyclists, or interacting oncoming vehicles are visible nearby.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. The driver should follow the vehicle ahead at a safe distance because it may brake suddenly under the overpass or due to unseen road debris."}
{"id": "train_07538", "split": "train", "clip_key": "2020-0127-132751_078242_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "078242"}, "frames": ["2020-0127-132751_078242_movie_t-3.jpg", "2020-0127-132751_078242_movie_t-2.jpg", "2020-0127-132751_078242_movie_t-1.jpg", "2020-0127-132751_078242_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial with smooth pavement approaches a signalized intersection, divided by a narrow raised median, and traffic is light and flowing. A silver van ahead in the ego lane accelerates through the intersection on green and pulls away from the camera, clearing the path. A small van just to the right continues ahead in the adjacent same-direction lane at a similar pace, loosely setting the flow. Oncoming vehicles, including a minivan and a van, remain stopped at their line across the median. A few pedestrians wait on the sidewalks near the crosswalk.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07539", "split": "train", "clip_key": "2020-0213-143552_019331_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "019331"}, "frames": ["2020-0213-143552_019331_movie_t-3.jpg", "2020-0213-143552_019331_movie_t-2.jpg", "2020-0213-143552_019331_movie_t-1.jpg", "2020-0213-143552_019331_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with smooth pavement curves gently right, with the ego car in the left lane of a two-way road separated from oncoming traffic by a line of red flexible posts; traffic is moderate and moves steadily. A covered truck directly ahead in the ego lane accelerates away from the camera, briefly setting the pace before opening a gap. A small silver minivan runs alongside on the left near the curb, continuing straight without merging into the ego lane. Oncoming cars to the right pass steadily behind the post median through the bend, remaining well separated from the ego path.", "hazard_reasoning": "A brown truck accelerating in front of the ego car. Follow the vehicle ahead to maintain a safe distance and respond to any sudden speed changes."}
{"id": "train_07540", "split": "train", "clip_key": "titan_clip_1062_000456_movie", "source": {"subset": "titan", "scenario": "clip_1062", "frame": "000456"}, "frames": ["titan_clip_1062_000456_movie_t-3.jpg", "titan_clip_1062_000456_movie_t-2.jpg", "titan_clip_1062_000456_movie_t-1.jpg", "titan_clip_1062_000456_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street with a single narrow undivided lane runs between storefronts; the pavement is smooth and there are no vehicles, so pedestrian flow dominates. On the left near the ego path, a pedestrian in blue pants and a white shirt carries a shopping bag and walks toward the car along the lane, directly in its path. On the right edge, another person with a bag moves toward the camera along the curb and encroaches slightly into the lane. Farther ahead in the center, two pedestrians walk away pulling a wheeled cart in the middle of the lane, occupying the path. A blue pedestrian sign on the left indicates pedestrian priority, and numerous sandwich-board adverts line the edges as minor roadside obstacles.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a white shirt, carrying a shopping bag, and walking on the left side of the intersection, towards the ego car. Therefore, you should slow down to avoid a collision with the crossing pedestrian."}
{"id": "train_07541", "split": "train", "clip_key": "2020-0228-102841_089716_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "089716"}, "frames": ["2020-0228-102841_089716_movie_t-3.jpg", "2020-0228-102841_089716_movie_t-2.jpg", "2020-0228-102841_089716_movie_t-1.jpg", "2020-0228-102841_089716_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban multi-lane arterial with smooth pavement approaches a wide, signalized intersection, bordered by a short raised median and cones on the right; traffic is moderate and slows near the stop line. A white sedan immediately ahead of the ego car turns right into the cross street at the intersection, entering the right side and momentarily occupying the ego lane. To the left-front, a black SUV in an adjacent same-direction lane proceeds straight through the junction, limiting lateral space. Farther ahead in the same direction, a small white van continues straight through the intersection, setting the pace for following vehicles. Overhead traffic lights are visible.", "hazard_reasoning": "There is a white sedan turning into the right side of the intersection, in front of the ego car. The sudden turn reduces the available space and may require evasive action, so the driver should slow down to avoid a collision."}
{"id": "train_07542", "split": "train", "clip_key": "titan_clip_915_000858_movie", "source": {"subset": "titan", "scenario": "clip_915", "frame": "000858"}, "frames": ["titan_clip_915_000858_movie_t-3.jpg", "titan_clip_915_000858_movie_t-2.jpg", "titan_clip_915_000858_movie_t-1.jpg", "titan_clip_915_000858_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow lane, no median, and smooth pavement; vehicle traffic is absent while pedestrian activity is heavy throughout the scene. Two children walk along the left side away from the ego vehicle, near the curb but close to the lane. A child ahead in the center of the road walks away in the ego path, constraining the approach. Farther ahead, a dense group of pedestrians spreads across the roadway from both sides and continues crossing, occupying most of the lane. No other vehicles or signals are visible.", "hazard_reasoning": "There are two children walking on the left side of the road, away from the ego car. These children may suddenly change direction and step into the roadway, requiring the driver to slow down to react and avoid a collision."}
{"id": "train_07543", "split": "train", "clip_key": "2020-0220-102630_048844_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "048844"}, "frames": ["2020-0220-102630_048844_movie_t-3.jpg", "2020-0220-102630_048844_movie_t-2.jpg", "2020-0220-102630_048844_movie_t-1.jpg", "2020-0220-102630_048844_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial unfolds with three same-direction lanes on smooth dry pavement, opposite-direction lanes on the right separated by painted buffers, and overall moderate traffic. A black van ahead in the ego lane drives away from the ego car at a steady pace, effectively setting the gap. Farther ahead in the adjacent left lane, a white box truck moves slowly, which could limit progression if the lane merges. In the opposite direction to the right, a large white truck approaches in its own lanes and continues past without affecting the ego path. Overhead blue directional signs provide route guidance, and construction scaffolding lines the left sidewalk.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. The van occupies your lane and may decelerate unexpectedly, so maintain a safe following distance."}
{"id": "train_07544", "split": "train", "clip_key": "titan_clip_344_000384_movie", "source": {"subset": "titan", "scenario": "clip_344", "frame": "000384"}, "frames": ["titan_clip_344_000384_movie_t-3.jpg", "titan_clip_344_000384_movie_t-2.jpg", "titan_clip_344_000384_movie_t-1.jpg", "titan_clip_344_000384_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian approaching on the right.", "environment_perception": "A narrow urban commercial street with a single block-paved lane and no divider runs between dense storefronts; the surface looks dry and traffic is light with no moving vehicles. On the right edge near the foreground, a pedestrian in a dress carrying a handbag walks toward the ego vehicle along the roadway and may enter its path. Farther ahead, several pedestrians move along the street and sidewalks in both directions, lightly constraining progress. A white minivan stands at the right curb encroaching into the lane, and a scooter is parked by the left curb, narrowing the usable corridor. No clear traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing a handbag and a dress, walking on the right side of the road, toward the ego car. The pedestrian's movement toward the vehicle means the driver should be aware and prepared to avoid a potential collision."}
{"id": "train_07545", "split": "train", "clip_key": "2020-0217-110854_015363_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "015363"}, "frames": ["2020-0217-110854_015363_movie_t-3.jpg", "2020-0217-110854_015363_movie_t-2.jpg", "2020-0217-110854_015363_movie_t-1.jpg", "2020-0217-110854_015363_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "In an urban corridor, the ego vehicle is in the left lane of a two-lane same-direction road beside a curbside sidewalk; the pavement is dry, and traffic is queued at a signalized intersection. A gray van directly ahead in the ego lane is stopped for the red light, holding the ego car. To the right, a white microvan in the adjacent lane waits alongside and creeps slightly with the queue without merging. On the left sidewalk, a pedestrian walks along the railing while remaining off the roadway. The traffic signal ahead shows red.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid a collision and comply with the red signal."}
{"id": "train_07546", "split": "train", "clip_key": "titan_clip_73_000396_movie", "source": {"subset": "titan", "scenario": "clip_73", "frame": "000396"}, "frames": ["titan_clip_73_000396_movie_t-3.jpg", "titan_clip_73_000396_movie_t-2.jpg", "titan_clip_73_000396_movie_t-1.jpg", "titan_clip_73_000396_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "A narrow urban side street without a centerline runs between buildings, the pavement smooth and traffic light. Ahead on the right, a worker pulls a large blue tarp across the roadway, partially narrowing the left lane and constraining progress, and an orange traffic cone on the left side marks this work area. A black van is parked at the curb under a building entrance on the right, narrowing the usable space beside the tarp. A blue right-arrow sign on a pole indicates a directional restriction at the small intersection ahead.", "hazard_reasoning": "There is an orange traffic cone, on the left side of the road, indicating a work area. It marks a work area and partially narrows the left lane, requiring cautious manoeuvring to avoid collision."}
{"id": "train_07547", "split": "train", "clip_key": "titan_clip_255_000570_movie", "source": {"subset": "titan", "scenario": "clip_255", "frame": "000570"}, "frames": ["titan_clip_255_000570_movie_t-3.jpg", "titan_clip_255_000570_movie_t-2.jpg", "titan_clip_255_000570_movie_t-1.jpg", "titan_clip_255_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with no centerline runs between buildings, with scaffolding, cones, and signs occupying the left curb and bollards edging the right sidewalk; the pavement is dry and slightly worn, and traffic is light. A small black van ahead in the same lane moves slowly away from the ego car, setting the pace. A pedestrian in gray walks away from the ego vehicle in the middle of the road due to the construction work on the left and may drift into the ego lane. Another pedestrian on the right sidewalk near the camera walks along the curb, remaining out of the lane. No salient signals or posted limits are visible, and the work zone narrows the usable lane and limits clearance.", "hazard_reasoning": "There is a pedestrian wearing gray clothing and walking away from the ego car, in the middle of the road, because of construction work. The pedestrian's unpredictable movement in the lane due to the construction increases the risk of collision, so the driver should slow down."}
{"id": "train_07548", "split": "train", "clip_key": "titan_clip_198_000546_movie", "source": {"subset": "titan", "scenario": "clip_198", "frame": "000546"}, "frames": ["titan_clip_198_000546_movie_t-3.jpg", "titan_clip_198_000546_movie_t-2.jpg", "titan_clip_198_000546_movie_t-1.jpg", "titan_clip_198_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of nearby pedestrians", "environment_perception": "An urban street with tall buildings lines both sides; the ego car proceeds along a narrow single-lane road with smooth pavement and no median, and traffic is light. A small white car ahead in the ego lane moves steadily forward at low speed, setting the pace. On the left side of the road, a tall pedestrian in a blue shirt walks away from the ego car near the lane edge, close to the parked truck and within the ego vehicle's forward path. A second pedestrian on the right sidewalk walks ahead parallel to traffic and remains near the curb. A large box truck is stopped along the left curb, jutting slightly into the lane and narrowing the passage, and a bicycle is parked by a pole on the right.", "hazard_reasoning": "There is a tall pedestrian wearing a blue shirt, walking on the left side of the road, away from the ego car. The pedestrian's close proximity to the travel lane could result in unexpected entry into the vehicle's path, so the driver should remain vigilant."}
{"id": "train_07549", "split": "train", "clip_key": "titan_clip_889_000102_movie", "source": {"subset": "titan", "scenario": "clip_889", "frame": "000102"}, "frames": ["titan_clip_889_000102_movie_t-3.jpg", "titan_clip_889_000102_movie_t-2.jpg", "titan_clip_889_000102_movie_t-1.jpg", "titan_clip_889_000102_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban shopping street with a single unmarked lane and no divider runs between close storefronts; the asphalt is smooth and traffic is very light with no visible vehicles. Directly ahead in the ego lane, a pedestrian in a cap wearing a backpack walks away along the center of the roadway, occupying the path and effectively setting the pace. Farther ahead near the left edge, another pedestrian walks in the same direction close to the travel line, remaining within the constrained corridor. No traffic signals or regulatory signs are evident. Parked bicycles, display boards, crates, and other shop fixtures line both sides and protrude into the carriageway, narrowing the usable lane.", "hazard_reasoning": "There is a pedestrian in a cap, and wearing a backpack, walking in front of the ego car, in the ego lane, away from the ego car. The pedestrian is directly in your path and may change direction, so the driver should carefully manoeuvre around them to maintain a safe distance."}
{"id": "train_07550", "split": "train", "clip_key": "2020-0212-102546_048357_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "048357"}, "frames": ["2020-0212-102546_048357_movie_t-3.jpg", "2020-0212-102546_048357_movie_t-2.jpg", "2020-0212-102546_048357_movie_t-1.jpg", "2020-0212-102546_048357_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs beside a raised median that separates oncoming lanes; the pavement looks smooth and traffic is light ahead while oncoming flow is moderate. A silver van ahead in the ego lane moves away at a steady pace, effectively setting the ego car's speed. Farther ahead, a white bus continues in the same lane along the ego vehicle's path. To the right beyond the median, several oncoming cars, including a black sedan near the front, travel toward the camera and pass steadily without interacting with the ego lane. Overhead directional signs span the roadway, and a pedestrian overpass crosses above.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car. Driver should follow the vehicle ahead to maintain safe distance and anticipate any sudden speed changes under this situation."}
{"id": "train_07551", "split": "train", "clip_key": "2020-0131-103016_058564_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "058564"}, "frames": ["2020-0131-103016_058564_movie_t-3.jpg", "2020-0131-103016_058564_movie_t-2.jpg", "2020-0131-103016_058564_movie_t-1.jpg", "2020-0131-103016_058564_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the black SUV", "environment_perception": "An urban arterial with two same-direction lanes has smooth pavement, curbside railings, and slow, queued traffic at a signal. The ego vehicle travels in the left lane where cars are stopped. A black SUV directly ahead in the ego lane is stopped for a red traffic light and blocks the path. To the right, a white van alongside in the adjacent lane creeps forward, limiting any chance to merge. Farther ahead in the right lane, a dark minivan waits in the queue and inches ahead with the signal phases. Shops and parked bicycles line the left sidewalk.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to maintain a safe distance and comply with the red signal."}
{"id": "train_07552", "split": "train", "clip_key": "titan_clip_504_000276_movie", "source": {"subset": "titan", "scenario": "clip_504", "frame": "000276"}, "frames": ["titan_clip_504_000276_movie_t-3.jpg", "titan_clip_504_000276_movie_t-2.jpg", "titan_clip_504_000276_movie_t-1.jpg", "titan_clip_504_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrians", "environment_perception": "A narrow urban backstreet with a single two-way lane lacks lane markings and sidewalks, with a metal guardrail and fenced lot on the right and worn pavement with scattered litter and a manhole; traffic is otherwise light with no vehicles. Ahead in the ego lane, a group of four pedestrians, two wearing white T-shirts and two in black pants, walks together in the middle of the road toward the ego vehicle while talking, because there is no sidewalk, so they occupy the travel way and constrain the car's pace. No notable traffic signals or posted speeds are visible, and the route is lined closely by building fronts.", "hazard_reasoning": "There are four pedestrians, two males, and two females, two wearing white t-shirts, two wearing black pants, talking together in a group, and walking in the middle of the road towards the ego-car, because there is no sidewalk. The group in the road poses a collision risk, so the driver should manoeuvre carefully around them."}
{"id": "train_07553", "split": "train", "clip_key": "titan_clip_1370_000228_movie", "source": {"subset": "titan", "scenario": "clip_1370", "frame": "000228"}, "frames": ["titan_clip_1370_000228_movie_t-3.jpg", "titan_clip_1370_000228_movie_t-2.jpg", "titan_clip_1370_000228_movie_t-1.jpg", "titan_clip_1370_000228_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the worker", "environment_perception": "An urban narrow two-way street with one lane each direction has no median and worn asphalt marked for works, and traffic is light while a roadside construction zone narrows the ego lane on the right. On the right edge by cones and barriers, a man wearing a uniform and helmet holds a traffic wand and stands beside the work area, constraining the available width for the ego vehicle. On the left sidewalk, several pedestrians walk parallel to the ego path, with one near the curb but not stepping into the lane. Far ahead near a minor junction, a white van is stopped at the left curb, partly screening the view beyond. Cones, signs, and equipment delineate the work site.", "hazard_reasoning": "There is a man wearing a uniform and a helmet, holding a traffic wand, and standing on the right side of the road. The driver should carefully manoeuvre around the worker to avoid a collision due to narrowed roadway and equipment presence."}
{"id": "train_07554", "split": "train", "clip_key": "2020-0131-103016_052360_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "052360"}, "frames": ["2020-0131-103016_052360_movie_t-3.jpg", "2020-0131-103016_052360_movie_t-2.jpg", "2020-0131-103016_052360_movie_t-1.jpg", "2020-0131-103016_052360_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with no physical median and dry, well?arked pavement carries moderate traffic that slows to a stop at an intersection. A gray flatbed truck directly ahead in the ego lane is stopped for a red traffic light, holding the ego car. To the right, a black minivan just ahead in the adjacent lane rolls slowly toward the stop line and waits at the light alongside the truck. To the left, a white sedan slightly behind the ego vehicle advances at low speed in its lane as the queue forms. Overhead signals ahead display red for this approach.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of a red traffic light. The driver should stop because the truck ahead is stopped at a red signal and proceeding could cause a collision."}
{"id": "train_07555", "split": "train", "clip_key": "titan_clip_909_000468_movie", "source": {"subset": "titan", "scenario": "clip_909", "frame": "000468"}, "frames": ["titan_clip_909_000468_movie_t-3.jpg", "titan_clip_909_000468_movie_t-2.jpg", "titan_clip_909_000468_movie_t-1.jpg", "titan_clip_909_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "An urban commercial street with a narrow two-way carriageway and no median is shown, the ego vehicle keeping left; the asphalt appears slightly worn and vehicular flow is light amid heavy pedestrian activity. On the right side of the ego lane just ahead, a pedestrian wearing a red T-shirt and striped pants walks toward the camera along the roadway, likely to enter the ego path. Farther ahead near the center of the lane, several pedestrians proceed away from the camera along the street, constraining the ego vehicle's speed. To the left, a small truck is parked with cones while a worker and nearby shoppers move around it, and one person crosses from the left edge toward the right, briefly occupying the lane.", "hazard_reasoning": "There is a pedestrian wearing a red t-shirt and striped pants walking on the right side of the ego lane in front and toward the ego car. The pedestrian is entering the vehicle's path in the ego lane, so the driver needs to carefully manoeuvre to avoid collision."}
{"id": "train_07556", "split": "train", "clip_key": "titan_clip_317_000282_movie", "source": {"subset": "titan", "scenario": "clip_317", "frame": "000282"}, "frames": ["titan_clip_317_000282_movie_t-3.jpg", "titan_clip_317_000282_movie_t-2.jpg", "titan_clip_317_000282_movie_t-1.jpg", "titan_clip_317_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with no marked centerline and smooth pavement is shown, with light traffic as the ego car proceeds along a single lane past storefronts. Ahead on the left edge a white van is stopped with its rear hatch open; a person carrying a handbag stands beside it, touching the open door while unloading, and the van partly intrudes into the ego lane. Farther ahead in the same direction a dark car moves slowly beyond a zebra crossing. Pedestrians are present on both sidewalks; one near the right curb walks toward the crosswalk while others linger by shops on the left. A zebra crossing spans the road under a decorative arch, and the open van and nearby person form the main roadside obstruction.", "hazard_reasoning": "There is a person carrying a handbag, touching an open van door, and standing on the left side of the road because they are unloading the van. The driver should slow down because the pedestrian unloading the van may step into the lane unexpectedly under this situation, creating a collision risk."}
{"id": "train_07557", "split": "train", "clip_key": "2020-0203-114632_071655_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "071655"}, "frames": ["2020-0203-114632_071655_movie_t-3.jpg", "2020-0203-114632_071655_movie_t-2.jpg", "2020-0203-114632_071655_movie_t-1.jpg", "2020-0203-114632_071655_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban elevated divided road with two same-direction lanes runs alongside high noise barriers, the pavement dry and intact; traffic in the ego's direction is heavy and slow. A silver van directly ahead in the ego left lane is stopped because of congestion and blocks the path. Farther ahead in the same lane, a large construction truck is also stopped, forming the queue that constrains the ego's pace. The adjacent right lane shows intermittent flow with no nearby vehicle merging into the ego lane. Across the central barrier, oncoming trucks move steadily.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a collision with the stationary van ahead."}
{"id": "train_07558", "split": "train", "clip_key": "2020-0129-105040_042422_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "042422"}, "frames": ["2020-0129-105040_042422_movie_t-3.jpg", "2020-0129-105040_042422_movie_t-2.jpg", "2020-0129-105040_042422_movie_t-1.jpg", "2020-0129-105040_042422_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of slowing truck ahead", "environment_perception": "An urban divided roadway runs under elevated structures with a metal guardrail separating oncoming traffic to the right; the pavement looks sound and traffic is light to moderate. Immediately ahead in the left lane, a white dump truck slows because another truck farther ahead in the same lane is also slowing, which may constrain the ego vehicle's pace. Slightly ahead in the right lane, a small white van continues steadily, limiting an immediate merge to pass. Farther ahead, several vehicles move smoothly in the same direction, while oncoming traffic remains behind the barrier. Blue directional signs are visible overhead.", "hazard_reasoning": "There is a white truck slowing in the left lane because of another truck slowing ahead. The slowing trucks could force the driver to brake suddenly if not noticed in time."}
{"id": "train_07559", "split": "train", "clip_key": "2020-0228-102841_048750_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "048750"}, "frames": ["2020-0228-102841_048750_movie_t-3.jpg", "2020-0228-102841_048750_movie_t-2.jpg", "2020-0228-102841_048750_movie_t-1.jpg", "2020-0228-102841_048750_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban one-way single-lane ramp runs between high noise barriers and concrete walls, the pavement looks smooth and traffic is light as the vehicle proceeds through a covered section. A white bus ahead in the same lane continues straight at a steady pace and effectively sets the ego-vehicle's speed. No oncoming traffic is visible because the roadway is divided by walls. Sun glare brightens the exit area, and a transverse white band across the lane appears near the camera with no other notable signs or signals.", "hazard_reasoning": "No hazards detected; driver can continue driving normally without adjustments."}
{"id": "train_07560", "split": "train", "clip_key": "2020-0207-151349_076042_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "076042"}, "frames": ["2020-0207-151349_076042_movie_t-3.jpg", "2020-0207-151349_076042_movie_t-2.jpg", "2020-0207-151349_076042_movie_t-1.jpg", "2020-0207-151349_076042_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A dense urban arterial runs under an elevated expressway with smooth pavement and a right-side guardrail separating a parallel roadway; traffic is heavy and mostly stopped. A brown dump truck directly ahead in the ego lane is stopped because of congestion and blocks the path. In the adjacent lane to the left, a white van slightly ahead inches forward, constraining any lane change. A dark gray sedan further left queues slowly alongside the truck. Pedestrians stand on the left sidewalk behind planters, away from the carriageway, and overhead direction signs in Japanese hang from the structure.", "hazard_reasoning": "There is a brown truck stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Stop to maintain a safe distance and avoid rear-end collisions."}
{"id": "train_07561", "split": "train", "clip_key": "2020-0131-135401_004232_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "004232"}, "frames": ["2020-0131-135401_004232_movie_t-3.jpg", "2020-0131-135401_004232_movie_t-2.jpg", "2020-0131-135401_004232_movie_t-1.jpg", "2020-0131-135401_004232_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with stopped truck", "environment_perception": "An urban two-way street with one lane in each direction runs between apartment buildings and a right-side guardrail, the asphalt smooth and traffic light under bright sun glare from the right. A white box truck is stopped directly ahead in the ego lane, blocking the path and holding the ego vehicle. On the left sidewalk near the curb, a pedestrian walks toward the camera while staying off the roadway. Farther ahead on the same sidewalk, a small group walks away without interacting with traffic. An overhead circular sign shows 40, indicating the posted speed limit.", "hazard_reasoning": "A white truck is stopped in front of the ego car in the ego lane. The stopped truck blocks the lane, requiring the driver to stop to maintain a safe distance."}
{"id": "train_07562", "split": "train", "clip_key": "titan_clip_1197_000240_movie", "source": {"subset": "titan", "scenario": "clip_1197", "frame": "000240"}, "frames": ["titan_clip_1197_000240_movie_t-3.jpg", "titan_clip_1197_000240_movie_t-2.jpg", "titan_clip_1197_000240_movie_t-1.jpg", "titan_clip_1197_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial side street with interlocking block pavement appears wet, forming a narrow two-way lane without a divider; traffic is light with no moving vehicles. On the right side of the road, a pedestrian holding an umbrella, wearing a gray sweater and gray pants, walks toward the ego vehicle along the edge and could step into its path. On the left close to the lane, a man in a light shirt walks toward the camera, partially in the roadway and affecting the available space. Farther ahead near the center, another person proceeds up the street, continuing away from the ego vehicle and not interacting. A parking entrance on the right has a parked bicycle, cones, and a metal ramp encroaching onto the roadway.", "hazard_reasoning": "There is a pedestrian holding an umbrella, wearing a gray sweater and gray pants, and walking on the right side of the road, towards the ego car. The pedestrian may enter the vehicle's path unexpectedly due to limited street width, so the driver should slow down to maintain a safe distance and reaction time."}
{"id": "train_07563", "split": "train", "clip_key": "2020-0207-151349_091326_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "091326"}, "frames": ["2020-0207-151349_091326_movie_t-3.jpg", "2020-0207-151349_091326_movie_t-2.jpg", "2020-0207-151349_091326_movie_t-1.jpg", "2020-0207-151349_091326_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban corridor with two same-direction lanes runs between a high wall on the left and a guard-railed edge on the right, the pavement dry and smooth, with light to moderate flow as the road bends slightly right. Directly ahead in the left ego lane, a small white truck with a tarped bed slows because of queuing traffic ahead, constraining the ego car's pace. In the adjacent right lane, a larger white box truck continues forward at a steady speed slightly ahead. No signals or cross traffic are visible.", "hazard_reasoning": "There is a white truck slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The truck's reduced speed indicates slowing traffic, and the driver should slow down to maintain a safe following distance."}
{"id": "train_07564", "split": "train", "clip_key": "2020-0226-101332_014185_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "014185"}, "frames": ["2020-0226-101332_014185_movie_t-3.jpg", "2020-0226-101332_014185_movie_t-2.jpg", "2020-0226-101332_014185_movie_t-1.jpg", "2020-0226-101332_014185_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction runs between buildings and white guardrails, the narrow pavement appearing wet and traffic light as the scene approaches a signalized junction. A yellow sedan directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle stationary. Farther ahead, a white truck in the oncoming lane approaches the intersection slowly while staying in its lane and not affecting the ego path. The red signal remains the salient control at the junction.", "hazard_reasoning": "There is a yellow sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The yellow sedan is stopped at a red traffic light ahead, so you should stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_07565", "split": "train", "clip_key": "titan_clip_1169_000366_movie", "source": {"subset": "titan", "scenario": "clip_1169", "frame": "000366"}, "frames": ["titan_clip_1169_000366_movie_t-3.jpg", "titan_clip_1169_000366_movie_t-2.jpg", "titan_clip_1169_000366_movie_t-1.jpg", "titan_clip_1169_000366_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban shopping alley with a single narrow shared lane has brick paving in good condition and no divider, with heavy foot traffic and no other vehicles visible. Ahead in the center, several pedestrians walk away along the lane, occupying the path and controlling the ego car's slow pace. On the right side, a pedestrian in blue pants carrying a handbag walks away along the edge in the same direction, close to the ego path. Near the right storefronts, a couple of people linger at the entrance by the curb, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing blue pants, carrying a handbag, walking on the right side of the road, away from the ego car. The pedestrian is close to the vehicle's path and may unexpectedly change direction, so the driver should manoeuvre carefully to avoid collision as suggested."}
{"id": "train_07566", "split": "train", "clip_key": "2020-0225-145150_034652_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "034652"}, "frames": ["2020-0225-145150_034652_movie_t-3.jpg", "2020-0225-145150_034652_movie_t-2.jpg", "2020-0225-145150_034652_movie_t-1.jpg", "2020-0225-145150_034652_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down and maintain safe distance.", "environment_perception": "An urban multi-lane arterial with smooth pavement has two same-direction lanes separated from oncoming lanes by a central divider, and traffic in the ego direction is slow and queuing. Directly ahead in the ego lane, a blue small cargo vehicle with a canvas cover slows in step with congestion, constraining the ego car's pace. In the adjacent lane to the left, a light-green hatchback travels slowly alongside and edges slightly ahead of the queue. Farther ahead, a green box truck and several white delivery vans creep forward in line, forming the bottleneck that causes the slowdown. The opposite carriageway to the right appears clearer with little oncoming traffic.", "hazard_reasoning": "There is a blue auto-rickshaw slowing in the ego lane because of traffic congestion ahead, in front of the ego car. Slow down and maintain safe distance to avoid a rear-end collision."}
{"id": "train_07567", "split": "train", "clip_key": "2020-0129-144857_037057_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "037057"}, "frames": ["2020-0129-144857_037057_movie_t-3.jpg", "2020-0129-144857_037057_movie_t-2.jpg", "2020-0129-144857_037057_movie_t-1.jpg", "2020-0129-144857_037057_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs beneath an elevated roadway with two same-direction lanes and a guardrail median on the right; the pavement is smooth and traffic is moderate, moving steadily past the junction. A black van ahead in the ego lane accelerates away as an overhead traffic light shows green, opening the gap. Farther ahead in the same lane, a white box truck continues straight at a lower speed, which the van follows. In the adjacent left lane, a white wagon travels alongside then drops slightly behind while maintaining its lane. Beyond the guardrail, oncoming vehicles pass on the opposite carriageway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07568", "split": "train", "clip_key": "2020-0205-152530_048196_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "048196"}, "frames": ["2020-0205-152530_048196_movie_t-3.jpg", "2020-0205-152530_048196_movie_t-2.jpg", "2020-0205-152530_048196_movie_t-1.jpg", "2020-0205-152530_048196_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multilane arterial with a planted median and smooth red-tinted pavement carries moderate traffic that is stopped at a signal. Ahead in the ego lane, a white box truck stands still at the red light, holding the ego vehicle at the line. In the lane to the right, a black hatchback is also stopped slightly ahead, queuing beside the truck and limiting lateral options. On the left sidewalk near the intersection, several pedestrians wait by the corner without entering the roadway. The overhead traffic signal shows red above the approach.", "hazard_reasoning": "A white truck is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop promptly to avoid a rear-end collision with the halted vehicle under the red light."}
{"id": "train_07569", "split": "train", "clip_key": "titan_clip_633_000234_movie", "source": {"subset": "titan", "scenario": "clip_633", "frame": "000234"}, "frames": ["titan_clip_633_000234_movie_t-3.jpg", "titan_clip_633_000234_movie_t-2.jpg", "titan_clip_633_000234_movie_t-1.jpg", "titan_clip_633_000234_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban residential street with a single undivided lane runs between low buildings and greenery; the pavement is smooth and there is no visible vehicular traffic, so flow is light. Two pedestrians ahead walk in the middle of the road away from the camera, staying in the ego lane and potentially limiting progress. On the right, several pedestrians move along the sidewalk behind bollards, walking parallel to traffic and not stepping into the carriageway. On the left, a pedestrian walks away along the curb on the sidewalk, remaining clear of the lane.", "hazard_reasoning": "There are two pedestrians walking in the middle of the road, away from the ego car. The driver should slow down to maintain control and be prepared to stop if they move into the vehicle's path."}
{"id": "train_07570", "split": "train", "clip_key": "2020-0227-153144_016528_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "016528"}, "frames": ["2020-0227-153144_016528_movie_t-3.jpg", "2020-0227-153144_016528_movie_t-2.jpg", "2020-0227-153144_016528_movie_t-1.jpg", "2020-0227-153144_016528_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with a left-side hatched buffer, smooth pavement, and moderate flow that slows near the camera. Ahead in the ego lane, a white SUV is stopped due to congestion ahead, holding our lane. In the lane to the right, a dark van continues straight at low speed past the blockage, constraining an easy merge. Slightly ahead on the left, a dark sedan stands in the hatched curbside area, reducing lateral space near the curb. A pedestrian crossing sign is visible on the left sidewalk.", "hazard_reasoning": "There is a white SUV stopped in the ego lane, because of traffic congestion ahead. You should stop to avoid colliding with the halted vehicle and ensure safe following distance."}
{"id": "train_07571", "split": "train", "clip_key": "titan_clip_702_000144_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_702_000144_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_702_000144_movie_t-3_augB1.jpg", "titan_clip_702_000144_movie_t-2_augB1.jpg", "titan_clip_702_000144_movie_t-1_augB1.jpg", "titan_clip_702_000144_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with a single mixed-traffic lane and smooth asphalt shows light activity. Directly ahead, a man in a white shirt and green pants carrying a shoulder bag walks away in the middle of the ego lane in front of the car, constraining its pace. Farther ahead, a small blue cart continues away in the same lane and remains in the path of travel. On the right, another pedestrian with a backpack walks along the curb in the same direction near the lane edge. A loaded flatbed truck is parked on the left, protruding slightly into the lane and narrowing the passage, while shop signs and parked bicycles line the right side and reduce lateral clearance.", "hazard_reasoning": "There is a man wearing a white shirt and green pants, carrying a shoulder bag, and walking in front of the ego car, away from the ego car. The pedestrian is entering the vehicle's path in limited visibility due to the parked truck, so the driver should slow down to avoid a collision."}
{"id": "train_07572", "split": "train", "clip_key": "titan_clip_464_000018_movie", "source": {"subset": "titan", "scenario": "clip_464", "frame": "000018"}, "frames": ["titan_clip_464_000018_movie_t-3.jpg", "titan_clip_464_000018_movie_t-2.jpg", "titan_clip_464_000018_movie_t-1.jpg", "titan_clip_464_000018_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single undivided lane and worn pavement runs between tall buildings, with construction barriers and cones along the left; traffic stays light and slow. Ahead in the ego lane a white minivan is parked nearly mid-lane, effectively blocking the path. On the right a large truck is stopped at the curb, further narrowing the corridor. A pedestrian near the right storefront stands by the minivan and then walks slowly along it, close to the ego path. No traffic signals are visible. The work zone and the two stopped vehicles create a tight passage and limited maneuvering space.", "hazard_reasoning": "There is a white sedan parked in the ego lane. This vehicle obstructs the travel lane and may force the driver to slow down to safely navigate around it."}
{"id": "train_07573", "split": "train", "clip_key": "2020-0131-135401_063548_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "063548"}, "frames": ["2020-0131-135401_063548_movie_t-3.jpg", "2020-0131-135401_063548_movie_t-2.jpg", "2020-0131-135401_063548_movie_t-1.jpg", "2020-0131-135401_063548_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with two same-direction lanes and no median shows dry, well?arked pavement, with red-and-white work barriers narrowing the left edge as traffic compresses into a slow queue ahead. A white van directly ahead in the ego lane slows because of congestion, constraining the ego car's pace. To the right, a large dump truck in the adjacent lane creeps forward alongside, maintaining a close parallel position. Farther right, a container truck and several cars queue in the right lane and move slowly toward the bottleneck under the overhead structures.", "hazard_reasoning": "There is a white van slowing in front of the ego car in the ego lane because of traffic congestion ahead. Drivers should slow down to adjust to the deceleration of the vehicle ahead and avoid a collision."}
{"id": "train_07574", "split": "train", "clip_key": "titan_clip_723_000222_movie", "source": {"subset": "titan", "scenario": "clip_723", "frame": "000222"}, "frames": ["titan_clip_723_000222_movie_t-3.jpg", "titan_clip_723_000222_movie_t-2.jpg", "titan_clip_723_000222_movie_t-1.jpg", "titan_clip_723_000222_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped vehicle ahead", "environment_perception": "An urban two-lane road with smooth dry pavement runs past offices and trees, with a planted median and guardrail on the right separating carriageways; traffic is light and steady. Ahead in the ego lane, a black hatchback is stopped for a red signal, holding the ego vehicle. Farther ahead slightly to the right, a small white truck continues straight in the adjacent lane and gradually pulls away. Along the left curb, a black sedan remains parked in a marked bay near the lane edge. No pedestrians or hazards are evident, and visibility is clear.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car in the ego lane, because the light is red. The driver should be aware of this stopped vehicle to avoid a collision when approaching the intersection."}
{"id": "train_07575", "split": "train", "clip_key": "2020-0205-103411_102294_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "102294"}, "frames": ["2020-0205-103411_102294_movie_t-3.jpg", "2020-0205-103411_102294_movie_t-2.jpg", "2020-0205-103411_102294_movie_t-1.jpg", "2020-0205-103411_102294_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road with smooth asphalt and no physical median approaches a signalized intersection, and traffic flows at a moderate pace. Ahead in the ego lane, a white box truck travels straight at steady speed and sets the ego car's pace, consistent with traffic proceeding through the junction. In the left adjacent lane, a small white van runs nearly parallel slightly behind to mid-level, continuing straight without edging into the ego lane. In the rightmost lane, a large blue truck advances toward the intersection and remains separate from the ego path. Multiple other cars are visible farther ahead across the intersection, but none show immediate interaction with the ego vehicle.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07576", "split": "train", "clip_key": "2020-0131-135401_077945_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "077945"}, "frames": ["2020-0131-135401_077945_movie_t-3.jpg", "2020-0131-135401_077945_movie_t-2.jpg", "2020-0131-135401_077945_movie_t-1.jpg", "2020-0131-135401_077945_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for the crossing pedestrian", "environment_perception": "An urban multi-lane intersection with a landscaped median lies ahead, and the ego vehicle waits at the stop line on dry, well-marked pavement while overall flow is light but paused for the red signal. Several pedestrians cross the near zebra from right to left directly ahead; one wearing black pants and a brown jacket moves leftward through the ego lane because the traffic light is red. A yellow hatchback stands ahead beyond the crosswalk in the ego direction, waiting to proceed and effectively setting the pace once the light changes. On the far side to the right, multiple trucks and cars are queued in the oncoming and cross-street approaches, remaining stopped at the intersection.", "hazard_reasoning": "There is a pedestrian wearing black pants and a brown jacket, crossing to the left side of the road via the crosswalk, because of the red traffic light. The driver must stop to yield to the pedestrian in the crosswalk and avoid a potential collision."}
{"id": "train_07577", "split": "train", "clip_key": "2020-0213-143552_009674_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009674"}, "frames": ["2020-0213-143552_009674_movie_t-3.jpg", "2020-0213-143552_009674_movie_t-2.jpg", "2020-0213-143552_009674_movie_t-1.jpg", "2020-0213-143552_009674_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Manoeuvre around the cone carefully.", "environment_perception": "An urban two-way street with one lane per direction runs between mid-rise buildings; the pavement looks smooth and traffic is light to moderate. A dark hatchback ahead in the ego lane proceeds steadily, effectively setting the ego vehicle's pace. To the right, an oncoming silver sedan passes in its lane, maintaining course opposite to the ego vehicle. Farther right near the curb, a white truck in the opposing flow moves slowly with other vehicles. Several orange traffic cones, including one prominently in the right lane near the centerline, and a small sign narrow the oncoming lane and create a temporary obstruction.", "hazard_reasoning": "There is an orange traffic cone in the right lane. The driver should manoeuvre around the cone carefully to avoid collision and maintain a safe lane position."}
{"id": "train_07578", "split": "train", "clip_key": "titan_clip_1250_000222_movie", "source": {"subset": "titan", "scenario": "clip_1250", "frame": "000222"}, "frames": ["titan_clip_1250_000222_movie_t-3.jpg", "titan_clip_1250_000222_movie_t-2.jpg", "titan_clip_1250_000222_movie_t-1.jpg", "titan_clip_1250_000222_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial alley with a narrow undivided roadway and worn, patchy pavement is ahead, with light vehicular flow and many pedestrians moving through the street. A large box truck is stopped ahead on the left with its rear open while a worker handles cargo, narrowing the lane and constraining the ego vehicle's path. Farther ahead on the right side of the road, pedestrians wearing black outfits carry an umbrella and walk away from the ego car along the edge, where they may drift into the travel line. Near the right corner, another pedestrian stands at the curb close to the lane, potentially stepping out as the vehicle approaches. Traffic cones, parked scooters, and storefronts line the sides, further tightening the corridor.", "hazard_reasoning": "There are pedestrians wearing black dresses carrying an umbrella walking away from the ego car on the right side of the road. The pedestrians could step onto the roadway near the parked truck, requiring the driver to manoeuvre carefully around them."}
{"id": "train_07579", "split": "train", "clip_key": "titan_clip_963_000282_movie", "source": {"subset": "titan", "scenario": "clip_963", "frame": "000282"}, "frames": ["titan_clip_963_000282_movie_t-3.jpg", "titan_clip_963_000282_movie_t-2.jpg", "titan_clip_963_000282_movie_t-1.jpg", "titan_clip_963_000282_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban backstreet with smooth asphalt lacks a centerline and is lined by sidewalks with bollards, and traffic flow is light and slow. A cyclist wearing black pants and a blue shirt rides ahead along the right edge away from the ego car, hugging the curb and slightly reducing available space on the right. A small green car farther ahead near the road center moves slowly in the same direction, setting the pace for the approach. Several pedestrians walk along both sidewalks, including one ahead on the right and others on the left, staying close to the roadway as the scene progresses.", "hazard_reasoning": "A cyclist wearing black pants and a blue shirt, cycling on the right side of the road, away from the ego car. Slowing down will help avoid collision if the cyclist unexpectedly changes direction or speed."}
{"id": "train_07580", "split": "train", "clip_key": "2020-0218-103119_007870_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "007870"}, "frames": ["2020-0218-103119_007870_movie_t-3.jpg", "2020-0218-103119_007870_movie_t-2.jpg", "2020-0218-103119_007870_movie_t-1.jpg", "2020-0218-103119_007870_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the stopped truck", "environment_perception": "A narrow urban two-way road with no median runs between apartment buildings; the pavement looks clean and traffic is light. A gray box truck ahead slightly to the left slows and comes to a stop near the curb, constraining the ego vehicle's pace on the single usable lane. No oncoming vehicles are visible in the opposing direction. Parked bicycles line the right curb close to the roadway, slightly reducing clearance.", "hazard_reasoning": "There is a gray truck stopped on the left side of the road. The driver should carefully manoeuvre around this stopped vehicle to maintain a safe path and avoid collision."}
{"id": "train_07581", "split": "train", "clip_key": "2020-0220-151845_026038_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "026038"}, "frames": ["2020-0220-151845_026038_movie_t-3.jpg", "2020-0220-151845_026038_movie_t-2.jpg", "2020-0220-151845_026038_movie_t-1.jpg", "2020-0220-151845_026038_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of the van changing lanes", "environment_perception": "An urban multilane arterial runs under elevated structures with smooth pavement and moderate, steadily moving traffic as the scene approaches a signalized intersection. Ahead in the ego lane, a black van changes to the left lane, briefly influencing the ego car's pace as it merges across the dashed line. In the left lane slightly ahead, a small light truck continues straight at a steady speed as the van slots in front of it. To the right front, a light-colored minivan travels parallel in the right lane, keeping its lane and speed. Overhead traffic lights show green arrows for straight and left, and no obstacles or work zones are visible.", "hazard_reasoning": "There is a black van in front of the ego car, changing to the left lane. You should be cautious because the van's lane change could reduce your space and force a sudden maneuver."}
{"id": "train_07582", "split": "train", "clip_key": "2020-0228-150133_041905_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "041905"}, "frames": ["2020-0228-150133_041905_movie_t-3.jpg", "2020-0228-150133_041905_movie_t-2.jpg", "2020-0228-150133_041905_movie_t-1.jpg", "2020-0228-150133_041905_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial features a raised striped median and dry, well-kept pavement, with moderate traffic queuing for a signal. A gray sedan directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle. To the left, a line of vans and compact cars in the adjacent same-direction lane also slows to a stop as they approach the intersection, constraining pace. On the right beyond the median, an oncoming white car proceeds toward the camera in its lane and continues past the junction without conflict.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to avoid a collision with the halted vehicle and comply with the traffic signal."}
{"id": "train_07583", "split": "train", "clip_key": "2020-0207-101955_092392_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "092392"}, "frames": ["2020-0207-101955_092392_movie_t-3.jpg", "2020-0207-101955_092392_movie_t-2.jpg", "2020-0207-101955_092392_movie_t-1.jpg", "2020-0207-101955_092392_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs under an elevated expressway toward a wide signalized intersection. Lanes are paint-divided with no physical median, the pavement is smooth, and traffic is moderate with a brief queue at the light. A blue sedan ahead in the ego lane is stopped, waiting at the red signal and holding the ego vehicle. In the adjacent left lane, a car carrier truck with a white van on its bed is slightly ahead and slowing to the stop line, limiting any leftward merge. In the opposite lanes to the right, several trucks proceed straight through the junction as oncoming traffic without interacting with the ego lane.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car in the ego lane, because of a red traffic light ahead. Stop to avoid a rear-end collision at the red signal."}
{"id": "train_07584", "split": "train", "clip_key": "titan_clip_927_000492_movie", "source": {"subset": "titan", "scenario": "clip_927", "frame": "000492"}, "frames": ["titan_clip_927_000492_movie_t-3.jpg", "titan_clip_927_000492_movie_t-2.jpg", "titan_clip_927_000492_movie_t-1.jpg", "titan_clip_927_000492_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked SUV", "environment_perception": "A narrow urban street with one through lane and no median is lined by buildings and parked vehicles; the pavement is smooth and traffic is light but slows through a constricted section. On the right ahead, a black SUV is parked partly in the ego lane with its left-rear door open, narrowing the passage. On the left foreground, a large delivery truck stands at the curb and protrudes into the lane, creating a pinch point opposite the SUV. Farther ahead in the same direction, a small flatbed truck proceeds slowly along the lane and effectively sets the pace. No salient signals or signs are visible.", "hazard_reasoning": "There's a black SUV parked on the right side of the road, in the ego-lane. It blocks part of the driving lane and may require the driver to adjust trajectory to maintain a safe distance and avoid a collision."}
{"id": "train_07585", "split": "train", "clip_key": "titan_clip_1089_000240_movie", "source": {"subset": "titan", "scenario": "clip_1089", "frame": "000240"}, "frames": ["titan_clip_1089_000240_movie_t-3.jpg", "titan_clip_1089_000240_movie_t-2.jpg", "titan_clip_1089_000240_movie_t-1.jpg", "titan_clip_1089_000240_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the vehicle", "environment_perception": "An urban two-way street with one lane per direction and no median is seen, the pavement is smooth, and overall traffic is light with the oncoming lane mostly clear. Immediately on the left in the ego lane, a white hatchback is parked with its tailgate open while a person unloads, narrowing the lane and constraining the ego vehicle's pace. Farther ahead on the same side, a white microvan stands stopped at the curb, slightly protruding into the lane. Beyond it, a box truck is also stopped along the left side, keeping same-direction traffic single-file past the parked vehicles.", "hazard_reasoning": "There is a white hatchback parked on the left side of the road, in the ego lane, because it is being unloaded. The stationary vehicle blocks part of your lane, requiring you to adjust your path to avoid a potential collision while maintaining safe clearance."}
{"id": "train_07586", "split": "train", "clip_key": "titan_clip_64_000222_movie", "source": {"subset": "titan", "scenario": "clip_64", "frame": "000222"}, "frames": ["titan_clip_64_000222_movie_t-3.jpg", "titan_clip_64_000222_movie_t-2.jpg", "titan_clip_64_000222_movie_t-1.jpg", "titan_clip_64_000222_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban side street with a single undivided two-way lane has smooth pavement and light traffic as the ego approaches a small intersection. Ahead in the ego lane, a silver truck is stopped at the junction for a stop sign, temporarily blocking the path. Two pedestrians on the right edge walk toward the camera along the roadway, close to the curb and parallel to the ego's path. Another pedestrian on the left stands by the curb beside several parked bicycles outside a shop. A no-entry sign is posted at the right-hand side street.", "hazard_reasoning": "There is a silver truck stopped in the ego lane, because of the stop sign. The driver should stop to avoid colliding with the stationary truck and comply with the stop sign."}
{"id": "train_07587", "split": "train", "clip_key": "2020-0131-135401_013244_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "013244"}, "frames": ["2020-0131-135401_013244_movie_t-3.jpg", "2020-0131-135401_013244_movie_t-2.jpg", "2020-0131-135401_013244_movie_t-1.jpg", "2020-0131-135401_013244_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane two-way street with a painted double centerline and smooth pavement runs between midrise buildings, with a curbside bicycle marking on the left; traffic is light and steady. A yellow compact car approaches in the oncoming lane to the right and passes close to the centerline as it goes by the ego vehicle. A small boxy van ahead in the ego lane continues straight at a modest speed, loosely setting the pace. Farther ahead, another oncoming car approaches in its lane without deviating and remains well separated.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07588", "split": "train", "clip_key": "2020-0129-105040_059017_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "059017"}, "frames": ["2020-0129-105040_059017_movie_t-3.jpg", "2020-0129-105040_059017_movie_t-2.jpg", "2020-0129-105040_059017_movie_t-1.jpg", "2020-0129-105040_059017_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street without lane markings crosses a short bridge, with concrete barriers on both sides and dry, intact pavement; traffic is light. On the right side near the building, a person in a black jacket and black pants walks beside a stroller along the sidewalk near the crosswalk, potentially entering the ego vehicle's path. On the left, another pedestrian walks along the bridge railing, staying clear of the roadway. A white van is stopped at the right curb just before the intersection, narrowing the approach and partly obscuring the view of the sidewalk. No moving vehicles are immediately ahead.", "hazard_reasoning": "There is a person wearing a black jacket and black pants and walking beside a stroller on the right side of the road. The pedestrian may move into the vehicle's path near the intersection, so you should slow down to maintain a safe distance."}
{"id": "train_07589", "split": "train", "clip_key": "2020-0207-151349_028336_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "028336"}, "frames": ["2020-0207-151349_028336_movie_t-3.jpg", "2020-0207-151349_028336_movie_t-2.jpg", "2020-0207-151349_028336_movie_t-1.jpg", "2020-0207-151349_028336_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes runs past tall buildings, with a low planted median on the right separating oncoming traffic; the dry pavement and bright sun glare suggest clear weather and moderate flow. A gray box truck is directly ahead in the ego lane, driving in front of and pulling away while continuing straight, loosely setting the pace. To the right-front, a white hatchback in the adjacent lane holds a steady course and speed parallel to the ego lane. Farther ahead across the center and right lanes, a few cars proceed straight with stable gaps. Overhead gantry signs display straight-ahead arrows for the lanes.", "hazard_reasoning": "There is a gray truck driving in front of, and away from, the ego car. The truck is likely to brake or stop at the red traffic light, so following it closely without adjusting speed could lead to a collision."}
{"id": "train_07590", "split": "train", "clip_key": "2020-0127-132751_091316_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "091316"}, "frames": ["2020-0127-132751_091316_movie_t-3.jpg", "2020-0127-132751_091316_movie_t-2.jpg", "2020-0127-132751_091316_movie_t-1.jpg", "2020-0127-132751_091316_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane each way and no median runs beside a railway wall; the asphalt is worn and traffic flows at a moderate pace. A blue truck ahead in the ego lane proceeds straight at a steady speed, leading the ego vehicle. A tarp-covered truck just ahead to the left creeps along the curbside area, reducing lateral clearance on that side. In the oncoming lane, a white minivan approaches at a steady pace with another white car following, keeping opposing traffic present. A pedestrian walks along the right sidewalk near the wall and does not step into the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07591", "split": "train", "clip_key": "2020-0226-140503_044082_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "044082"}, "frames": ["2020-0226-140503_044082_movie_t-3.jpg", "2020-0226-140503_044082_movie_t-2.jpg", "2020-0226-140503_044082_movie_t-1.jpg", "2020-0226-140503_044082_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming sedan", "environment_perception": "An urban multi-lane two-way arterial lined with tall buildings approaches a signalized intersection; the asphalt is smooth with no median, traffic is moderate, and the light ahead shows green for the ego approach. A white van ahead slightly left in the same direction proceeds through the intersection and effectively sets the ego vehicle's pace. On the right side of the road in the oncoming lanes, a silver sedan drives toward the ego car through the intersection. Beside it, a box truck also approaches from the opposite direction and continues straight within its lane.", "hazard_reasoning": "There is a silver sedan driving toward the ego car, on the right side of the road. The sedan may merge into your lane unexpectedly, so you should yield to allow it to pass safely."}
{"id": "train_07592", "split": "train", "clip_key": "titan_clip_129_000510_movie", "source": {"subset": "titan", "scenario": "clip_129", "frame": "000510"}, "frames": ["titan_clip_129_000510_movie_t-3.jpg", "titan_clip_129_000510_movie_t-2.jpg", "titan_clip_129_000510_movie_t-1.jpg", "titan_clip_129_000510_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrians", "environment_perception": "An urban backstreet with a single narrow lane and brick paving runs between tall buildings; there is no median and traffic is light with no moving vehicles ahead. Two pedestrians wearing white shirts and black pants are ahead on the left, walking toward the ego along the curb and edging into the travel space, so they may enter the ego lane. A white truck is stopped at the right curb in the near foreground, its body jutting slightly into the lane and constraining the available width. A no-parking sign stands on the left, while shop boards and cones sit on the sidewalk.", "hazard_reasoning": "There are two pedestrians wearing white shirts and black pants and walking on the left side of the road towards the ego car. The driver should manoeuvre carefully around them to avoid a collision."}
{"id": "train_07593", "split": "train", "clip_key": "2020-0129-144857_056237_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "056237"}, "frames": ["2020-0129-144857_056237_movie_t-3.jpg", "2020-0129-144857_056237_movie_t-2.jpg", "2020-0129-144857_056237_movie_t-1.jpg", "2020-0129-144857_056237_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the black sedan.", "environment_perception": "An urban two-way arterial approaches a wide intersection beneath pedestrian overpasses, with a painted channelizing island on the right and smooth pavement; traffic is moderate and slows at the junction. A black sedan emerges from the right side street and turns in front of the ego-vehicle through the intersection, temporarily occupying the ego path. Far ahead in the same left-side lane beyond the junction, a flatbed truck continues straight and moves slowly. Oncoming trucks and vans queue on the opposite side to the right of center, creeping forward in their lanes without encroaching. Overhead regulatory signs and a straight-ahead blue arrow are posted above the intersection.", "hazard_reasoning": "There is a black sedan turning on the right side of the intersection in front of the ego-car. The driver should yield because the sedan may cross the ego-car's path unexpectedly."}
{"id": "train_07594", "split": "train", "clip_key": "2020-0129-105040_102122_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "102122"}, "frames": ["2020-0129-105040_102122_movie_t-3.jpg", "2020-0129-105040_102122_movie_t-2.jpg", "2020-0129-105040_102122_movie_t-1.jpg", "2020-0129-105040_102122_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial approaches a wide, signalized intersection with smooth pavement and steady, moderate flow, with no physical median. A small white kei-truck ahead in the ego lane accelerates away as a larger box truck further ahead also moves through the junction, increasing the gap to the ego car. To the left, a black van slightly ahead continues straight in its lane and does not affect the ego path. On the far right edge, a white van waits at the curb and may merge into the near lane. Oncoming vehicles proceed in the opposite lanes across the intersection, remaining separated from the ego direction. Overhead traffic lights and gantries control the junction.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because the truck ahead is moving. The driver should follow the vehicle ahead to maintain safe spacing and be prepared for potential deceleration of the truck."}
{"id": "train_07595", "split": "train", "clip_key": "2020-0220-102630_020248_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "020248"}, "frames": ["2020-0220-102630_020248_movie_t-3.jpg", "2020-0220-102630_020248_movie_t-2.jpg", "2020-0220-102630_020248_movie_t-1.jpg", "2020-0220-102630_020248_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a planted curb along the left edge carries heavy, stop-and-go traffic on dry, well-kept pavement. Directly ahead, a white sedan in the ego lane has stopped because congestion builds in front, holding the ego vehicle. Farther ahead in the queue, a tall white box truck rolls slowly in the same lane, limiting forward visibility and dictating the pace. In the adjacent right lane, a blue hatchback and a white delivery van creep forward parallel to the ego path, maintaining their lane without offering a gap. No salient signals or posted speeds are visible.", "hazard_reasoning": "There is a white sedan that has stopped in the ego lane because of traffic congestion ahead, in front of the ego car. The vehicle's sudden stop due to queued traffic poses a collision risk, so the driver should slow down to maintain a safe following distance."}
{"id": "train_07596", "split": "train", "clip_key": "2020-0203-114632_066344_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_066344_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_066344_movie_t-3_augB1.jpg", "2020-0203-114632_066344_movie_t-2_augB1.jpg", "2020-0203-114632_066344_movie_t-1_augB1.jpg", "2020-0203-114632_066344_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of merging truck", "environment_perception": "An urban bridge in a built-up area carries a two-way arterial with two same-direction lanes on the ego side, a double orange median, smooth pavement, and light to moderate flow as the road curves gently right. A white truck ahead in the ego lane moves right and changes into the adjacent lane, briefly affecting our headway while it crosses. A dark car ahead-right continues steadily in that right lane, remaining parallel and not merging. Oncoming vehicles travel in the opposite lanes beyond the median and pass without interaction. A yellow merge warning sign stands on the left railing.", "hazard_reasoning": "There is a white truck in front of the ego car, changing to the right lane. The truck's lane change may encroach on your path, so you should be aware to maintain safe distance and avoid a collision."}
{"id": "train_07597", "split": "train", "clip_key": "2020-0217-110854_058988_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "058988"}, "frames": ["2020-0217-110854_058988_movie_t-3.jpg", "2020-0217-110854_058988_movie_t-2.jpg", "2020-0217-110854_058988_movie_t-1.jpg", "2020-0217-110854_058988_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs under an elevated expressway with smooth pavement and a right-side guardrail; traffic flows at a moderate pace with no visible oncoming lanes. A silver van travels directly ahead in the ego lane and gradually pulls away, matching the impression that it is driving in front of and away from the ego car. Slightly ahead to the left, a white sedan cruises in the adjacent lane at a similar speed, posing no immediate interaction. Farther ahead in the same direction, another small van proceeds in the center of the lane group and helps set the overall pace. Overhead gantries are present but their signs are not readable, and no unusual hazards appear.", "hazard_reasoning": "There is a silver van driving in front of, and away from, the ego car. The leading van could brake suddenly, so the driver should maintain a safe following distance by following the vehicle ahead."}
{"id": "train_07598", "split": "train", "clip_key": "2020-0217-144444_000790_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "000790"}, "frames": ["2020-0217-144444_000790_movie_t-3.jpg", "2020-0217-144444_000790_movie_t-2.jpg", "2020-0217-144444_000790_movie_t-1.jpg", "2020-0217-144444_000790_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two same-direction lanes runs beside a curbside railing; the pavement is smooth and traffic is heavy with a slow-moving queue ahead. A yellow sedan directly ahead in the ego lane is stopped because of congestion, blocking the ego vehicle's path. In the adjacent right lane, a line of cars, including a dark van farther ahead, creeps forward and limits chances to merge around the stop. Far ahead, a signalized intersection is visible at the end of the queue.", "hazard_reasoning": "There is a yellow sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The sedan's sudden halt ahead creates a collision hazard requiring the driver to stop promptly."}
{"id": "train_07599", "split": "train", "clip_key": "titan_clip_694_000402_movie", "source": {"subset": "titan", "scenario": "clip_694", "frame": "000402"}, "frames": ["titan_clip_694_000402_movie_t-3.jpg", "titan_clip_694_000402_movie_t-2.jpg", "titan_clip_694_000402_movie_t-1.jpg", "titan_clip_694_000402_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way side street with no lane markings and no median, bordered by shops and a construction fence on the right, has smooth but slightly worn pavement and very light traffic. Two women ahead on the left side walk toward the ego-vehicle along the roadway, potentially entering its path. Farther ahead in the center of the street, a pedestrian in a red top walks away in the same direction, occupying the lane in the ego path. A person stands by the left storefront behind a railing and remains stationary off the roadway.", "hazard_reasoning": "There are two women walking together on the left side of the road, toward the ego car. The driver should slow down because the pedestrians are approaching on the roadway and may enter the vehicle's path."}
{"id": "train_07600", "split": "train", "clip_key": "titan_clip_596_000360_movie", "source": {"subset": "titan", "scenario": "clip_596", "frame": "000360"}, "frames": ["titan_clip_596_000360_movie_t-3.jpg", "titan_clip_596_000360_movie_t-2.jpg", "titan_clip_596_000360_movie_t-1.jpg", "titan_clip_596_000360_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban side street with a single shared lane and no center divider has smooth pavement and very light traffic. The ego-vehicle proceeds straight as storefronts line the left and numerous parked bicycles crowd the right curb, narrowing the usable lane. Ahead on the right edge, two pedestrians-one using a wheelchair and one wearing a blue shirt-stand beside the curb and are close to the ego path. No oncoming or same-direction vehicles and no salient signals are visible.", "hazard_reasoning": "There are two pedestrians, one in a wheelchair and one wearing a blue shirt, standing on the right side of the lane. The driver should carefully manoeuvre to avoid them as they may move unpredictably and obstruct the path."}
{"id": "train_07601", "split": "train", "clip_key": "titan_clip_996_000072_movie", "source": {"subset": "titan", "scenario": "clip_996", "frame": "000072"}, "frames": ["titan_clip_996_000072_movie_t-3.jpg", "titan_clip_996_000072_movie_t-2.jpg", "titan_clip_996_000072_movie_t-1.jpg", "titan_clip_996_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "An urban side street with buildings tight to the curb extends ahead on smooth brick paving, unmarked for lanes and without a median, and no moving vehicles are present. A pedestrian in a black dress walks away from the ego vehicle along the right edge of the road, close to the ego path and potentially entering it. On the left, a man by the storefront walks along the sidewalk near the curb, staying off the carriageway and not affecting the vehicle. Far ahead, a few pedestrians move along distant sidewalks without approaching the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black dress and walking away from the ego car on the right side of the road. The pedestrian may step onto the road unexpectedly, so the driver should be aware of the pedestrian ahead."}
{"id": "train_07602", "split": "train", "clip_key": "titan_clip_1208_000420_movie", "source": {"subset": "titan", "scenario": "clip_1208", "frame": "000420"}, "frames": ["titan_clip_1208_000420_movie_t-3.jpg", "titan_clip_1208_000420_movie_t-2.jpg", "titan_clip_1208_000420_movie_t-1.jpg", "titan_clip_1208_000420_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the blocked crosswalk carefully.", "environment_perception": "A dense urban commercial street with block-paved surface has no marked lanes or divider, and traffic is light and slow in a shared space. Ahead in the left-side ego path, a white truck is stopped near the intersection, narrowing the way and blocking the crosswalk. An oncoming bicyclist travels steadily toward the camera along the center of the road and continues past. On the left edge near the truck, a pedestrian in a pink shirt carrying a backpack walks away from the ego vehicle along the roadway while the crosswalk is obstructed. Other pedestrians stroll by shopfronts and one or two cross farther ahead without affecting the ego vehicle's path.", "hazard_reasoning": "There is a pedestrian wearing a pink shirt, carrying a backpack, walking on the left side of the road, away from the ego car, because a vehicle is blocking the crosswalk. The driver should manoeuvre around the blocked crosswalk carefully to avoid conflict with the crossing pedestrian."}
{"id": "train_07603", "split": "train", "clip_key": "titan_clip_1143_000546_movie", "source": {"subset": "titan", "scenario": "clip_1143", "frame": "000546"}, "frames": ["titan_clip_1143_000546_movie_t-3.jpg", "titan_clip_1143_000546_movie_t-2.jpg", "titan_clip_1143_000546_movie_t-1.jpg", "titan_clip_1143_000546_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-lane one-way street with smooth asphalt and no median is shown, with light traffic and several vehicles parked along the left curb while the right lane remains mostly open. Ahead in the ego lane, a box truck is parked with its rear open and stacks of crates visible because it is being unloaded, blocking the ego lane and constraining the approach. Beside the truck on the left, a worker moves a dolly of blue crates at the curb and edges near the roadway where the path narrows. In the adjacent right lane, a white van farther ahead continues straight, briefly occupying the only moving lane available around the obstruction.", "hazard_reasoning": "There is a truck parked in the ego lane because it is being unloaded, in front of the ego car. The driver should carefully manoeuvre to avoid collision with the stationary truck blocking the lane."}
{"id": "train_07604", "split": "train", "clip_key": "2020-0226-140503_095557_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "095557"}, "frames": ["2020-0226-140503_095557_movie_t-3.jpg", "2020-0226-140503_095557_movie_t-2.jpg", "2020-0226-140503_095557_movie_t-1.jpg", "2020-0226-140503_095557_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes runs between midrise buildings, the pavement looks smooth, and a fence lines the right edge; traffic appears moderate and steady. A white pickup truck ahead to the left moves from the left lane into the ego lane directly in front of the ego vehicle, reducing space and constraining its pace. A black sedan slightly ahead continues straight in the left lane as the truck merges. Farther ahead in the ego lane, a small car travels steadily and sets the flow. A roadside round sign shows a posted speed of 50.", "hazard_reasoning": "There is a white pickup truck lane changing in front of the ego car, from the left lane to the ego lane. This sudden merging poses a collision risk if speed is not reduced in time, so the driver should slow down to maintain a safe following distance."}
{"id": "train_07605", "split": "train", "clip_key": "2020-0203-154554_074780_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "074780"}, "frames": ["2020-0203-154554_074780_movie_t-3.jpg", "2020-0203-154554_074780_movie_t-2.jpg", "2020-0203-154554_074780_movie_t-1.jpg", "2020-0203-154554_074780_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial passes under a pedestrian footbridge; the pavement looks damp and traffic flows steadily. A red van ahead in the ego lane drives away toward a signalized intersection, effectively setting our pace. A white microvan in the right adjacent lane is slightly ahead and continues straight alongside, limiting room for a rightward lane change. A silver van in the left curb lane runs parallel a little ahead near the sidewalk, keeping to its lane. Overhead traffic signals span the upcoming intersection, with railings and storefronts along both sides.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07606", "split": "train", "clip_key": "2020-0220-102630_015737_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "015737"}, "frames": ["2020-0220-102630_015737_movie_t-3.jpg", "2020-0220-102630_015737_movie_t-2.jpg", "2020-0220-102630_015737_movie_t-1.jpg", "2020-0220-102630_015737_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth dry asphalt curves gently to the right, with no physical median visible and heavy, stop-and-go traffic near an intersection. A white sedan directly ahead in the ego lane is stopped because the traffic light ahead shows red, holding the ego vehicle. Farther ahead in the same lane, a tall box truck is also halted in the queue, reducing forward visibility and keeping pace slow. In the adjacent right lane, several small trucks alongside creep forward in the same direction, inching past the queue while remaining in their lane.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop to avoid colliding with the halted vehicle at the red signal."}
{"id": "train_07607", "split": "train", "clip_key": "titan_clip_1164_000222_movie", "source": {"subset": "titan", "scenario": "clip_1164", "frame": "000222"}, "frames": ["titan_clip_1164_000222_movie_t-3.jpg", "titan_clip_1164_000222_movie_t-2.jpg", "titan_clip_1164_000222_movie_t-1.jpg", "titan_clip_1164_000222_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with boutiques lines a two-way road; the ego car travels in the left lane on smooth asphalt, and traffic is light but slowed by curbside parking. Several small trucks and cars are stopped along both curbs, narrowing the lane. A silver van directly ahead in the ego lane moves slowly past the parked vehicles, setting the pace. On the left near mid-distance, a pedestrian wearing a striped shirt faces toward the ego vehicle and walks at the road edge, bringing him close to the ego lane. Another person stands beside a flatbed truck on the left close to the travel lane. No signals or speed signs are prominent.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt and towards the ego car, on the left side of the road. The pedestrian is close to the vehicle's path and may step into the lane unexpectedly, so the driver should slow down to allow safe reaction under this situation."}
{"id": "train_07608", "split": "train", "clip_key": "2020-0226-140503_073743_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "073743"}, "frames": ["2020-0226-140503_073743_movie_t-3.jpg", "2020-0226-140503_073743_movie_t-2.jpg", "2020-0226-140503_073743_movie_t-1.jpg", "2020-0226-140503_073743_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial features three lanes in the ego direction and several oncoming lanes separated by a painted median; the pavement appears damp and traffic moves at a steady moderate pace. A black car directly ahead in the ego lane continues straight at a constant speed, setting the pace. In the adjacent right lane, a silver sedan runs slightly ahead in parallel, maintaining its lane. Oncoming vehicles, including a white van, proceed steadily in the opposite lanes, remaining separated by the median.", "hazard_reasoning": "The scene shows clear road conditions with no apparent hazards; maintain awareness and proceed normally."}
{"id": "train_07609", "split": "train", "clip_key": "2020-0220-102630_075526_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "075526"}, "frames": ["2020-0220-102630_075526_movie_t-3.jpg", "2020-0220-102630_075526_movie_t-2.jpg", "2020-0220-102630_075526_movie_t-1.jpg", "2020-0220-102630_075526_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each direction runs between mid-rise buildings, marked by a solid yellow centerline and dry, intact pavement; traffic is moderate with a short queue forming ahead. In the left-side ego lane, a white van ahead slows because traffic is backed up further along, setting the pace for the ego car. Farther ahead in the same direction, several cars bunch near an overhead pedestrian bridge and move slowly. The right edge is lined by a metal fence along the sidewalk, and no unusual obstacles or work zones are visible.", "hazard_reasoning": "There's a white van slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and adapt to the reduced speed caused by congestion ahead."}
{"id": "train_07610", "split": "train", "clip_key": "titan_clip_414_000456_movie", "source": {"subset": "titan", "scenario": "clip_414", "frame": "000456"}, "frames": ["titan_clip_414_000456_movie_t-3.jpg", "titan_clip_414_000456_movie_t-2.jpg", "titan_clip_414_000456_movie_t-1.jpg", "titan_clip_414_000456_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for pedestrians", "environment_perception": "An urban two-way street with one narrow lane per direction and no median comes into view; the pavement looks smooth and overall traffic is light. On the left edge of the ego lane ahead, a small group of pedestrians carrying backpacks and wearing white shirts walks away from the camera within the roadway because there is no sidewalk, directly occupying part of the ego path. In the opposing lane to the right, a black SUV approaches and passes by while staying in its lane, reducing lateral space as it goes by. Farther ahead near the right curb, a person moves a handcart along the roadside in the oncoming direction.", "hazard_reasoning": "There are three pedestrians carrying backpacks and wearing white shirts, walking on the left side of the ego lane, away from the ego car, because there is no sidewalk. They are in the vehicle's path and may step into the lane unexpectedly, so the driver should slow down to avoid a collision."}
{"id": "train_07611", "split": "train", "clip_key": "2020-0131-103016_024092_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "024092"}, "frames": ["2020-0131-103016_024092_movie_t-3.jpg", "2020-0131-103016_024092_movie_t-2.jpg", "2020-0131-103016_024092_movie_t-1.jpg", "2020-0131-103016_024092_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes has dry pavement and a landscaped median; the ego travels in the left lane and overall traffic is moderate. Directly ahead in the ego lane, a gray box truck slows as it passes a wide crosswalk, constraining the ego car's pace. In the adjacent right lane, a white van continues ahead and gradually pulls past without merging. Farther ahead in that lane, another small van proceeds with the flow. An overhead traffic signal spans the intersection near the crosswalk.", "hazard_reasoning": "There is a gray truck slowing down in the ego lane. The driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_07612", "split": "train", "clip_key": "2020-0220-151845_054704_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "054704"}, "frames": ["2020-0220-151845_054704_movie_t-3.jpg", "2020-0220-151845_054704_movie_t-2.jpg", "2020-0220-151845_054704_movie_t-1.jpg", "2020-0220-151845_054704_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial runs under an elevated expressway, bordered by a concrete barrier on the left and smooth, dark pavement; two same-direction lanes are visible and traffic is heavy and slow. A red flatbed truck with a yellow-covered load is directly ahead in the ego lane and decelerates, constraining the ego's pace due to congestion further ahead. In the adjacent right lane, a black SUV alongside the ego and several vans ahead creep forward in a long queue, keeping pace with the slowdown. No signals or unusual signage are prominent, and no pedestrians or bicycles appear.", "hazard_reasoning": "There is a red truck slowing down in front of the ego car, due to traffic congestion ahead. Slow down to maintain a safe distance and avoid a rear-end collision as traffic decelerates."}
{"id": "train_07613", "split": "train", "clip_key": "2020-0213-143552_039058_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "039058"}, "frames": ["2020-0213-143552_039058_movie_t-3.jpg", "2020-0213-143552_039058_movie_t-2.jpg", "2020-0213-143552_039058_movie_t-1.jpg", "2020-0213-143552_039058_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban scene unfolds on a two-lane same-direction road beneath an elevated expressway, with smooth pavement and light traffic; a fenced construction area runs along the right. A white box truck directly ahead in the left ego lane slows, constraining the ego car's pace. A motorcyclist slightly ahead near the left curb rides forward alongside the truck and could merge into the ego lane. A black minivan is parked along the left curb near the ego vehicle, reducing lateral clearance as the car passes. Several trucks sit inside the fenced work zone on the right, separated from traffic.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. Slow down to maintain a safe distance and avoid colliding with the decelerating truck."}
{"id": "train_07614", "split": "train", "clip_key": "2020-0218-151547_008059_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "008059"}, "frames": ["2020-0218-151547_008059_movie_t-3.jpg", "2020-0218-151547_008059_movie_t-2.jpg", "2020-0218-151547_008059_movie_t-1.jpg", "2020-0218-151547_008059_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "A wide urban intersection with smooth pavement and no median opens ahead, and overall traffic is light but briefly interrupted by cross traffic. In the ego lane near the stop line, a white motorcycle is stopped, waiting because a large orange-and-black coach bus moves through the intersection across the ego path. The bus turns from the right toward the left in front of the camera, occupying the crossing and momentarily constraining the ego vehicle's progress. On the far right in the oncoming lanes, a small truck and a car continue along the cross street without affecting the ego lane. Bright sunlight creates glare and deep shadows across the roadway.", "hazard_reasoning": "There is a white motorcycle stopped in the ego lane, because a bus is moving through the intersection. The driver should stop to avoid colliding with the halted motorcycle in the lane."}
{"id": "train_07615", "split": "train", "clip_key": "titan_clip_1228_000588_movie", "source": {"subset": "titan", "scenario": "clip_1228", "frame": "000588"}, "frames": ["titan_clip_1228_000588_movie_t-3.jpg", "titan_clip_1228_000588_movie_t-2.jpg", "titan_clip_1228_000588_movie_t-1.jpg", "titan_clip_1228_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way side street without a centerline runs between close buildings; the pavement looks worn and traffic is very light. The ego vehicle proceeds along the left edge. Ahead in the middle of the road, a pedestrian wearing a black shirt and shorts walks away from the ego car, occupying the path and constraining speed. Slightly farther ahead by the left curb, another pedestrian walks in the same direction along the edge and may drift into the lane. A white car is parked partly out from a bay on the left, further narrowing the passage and reducing clearance.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and shorts, walking in the middle of the road, away from the ego car. The driver should slow down because a person on the roadway may step unpredictably, increasing collision risk."}
{"id": "train_07616", "split": "train", "clip_key": "2020-0225-145150_019959_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "019959"}, "frames": ["2020-0225-145150_019959_movie_t-3.jpg", "2020-0225-145150_019959_movie_t-2.jpg", "2020-0225-145150_019959_movie_t-1.jpg", "2020-0225-145150_019959_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with smooth asphalt has multiple lanes in each direction, with the ego traveling on the left side; opposing lanes run to the right, separated by a wide painted buffer, and traffic remains light to moderate. Ahead in the ego lane, a small white box truck followed closely by a gray van continues at a steady pace, setting the ego vehicle's speed. On the opposing side, a white minivan approaches in the nearest oncoming lane while remaining well within its lane. A few additional cars move in the distance without affecting the ego path. Buildings line both sides with guardrails and trees, and no prominent traffic signals or unusual signs appear in view.", "hazard_reasoning": "No hazards are present and the road is clear, so the driver should maintain speed and vigilance."}
{"id": "train_07617", "split": "train", "clip_key": "2020-0205-103411_105396_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "105396"}, "frames": ["2020-0205-103411_105396_movie_t-3.jpg", "2020-0205-103411_105396_movie_t-2.jpg", "2020-0205-103411_105396_movie_t-1.jpg", "2020-0205-103411_105396_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with guardrails and smooth pavement appears under light traffic, with a striped buffer on the right and no visible median traffic. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. Slightly ahead to the left, a small white van in the adjacent lane continues straight and gradually pulls away without merging. Farther ahead in the right lane, another light truck proceeds steadily and opens the gap. An overhead gantry spans the road, and no salient signals or unusual controls are visible.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car, in the ego lane. The truck's reduced speed could lead to a sudden braking scenario, so the driver should slow down to maintain a safe following distance and avoid collision."}
{"id": "train_07618", "split": "train", "clip_key": "titan_clip_943_000120_movie", "source": {"subset": "titan", "scenario": "clip_943", "frame": "000120"}, "frames": ["titan_clip_943_000120_movie_t-3.jpg", "titan_clip_943_000120_movie_t-2.jpg", "titan_clip_943_000120_movie_t-1.jpg", "titan_clip_943_000120_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "manoeuvre", "environment_perception": "A dense urban shopping street features a narrow single-lane roadway with no median, smooth pavement, and light traffic. A gray delivery truck is parked on the right side of the road, protruding into the lane and constraining the ego-vehicle's path. Several pedestrians are ahead along both curbs and partly in the roadway, some walking away from the camera and others approaching, and their movements near storefronts make them relevant to the vehicle's clearance. A pedestrian on the left beside shopfront cones walks close to the edge, further narrowing space. No moving vehicles or oncoming traffic are apparent, and no traffic signals are visible.", "hazard_reasoning": "There is a gray truck parked on the right side of the road. It obstructs part of the driving lane and limits the view of pedestrians, so the driver should manoeuvre carefully to maintain a safe clearance and avoid hitting unseen pedestrians."}
{"id": "train_07619", "split": "train", "clip_key": "titan_clip_879_000060_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_879_000060_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_879_000060_movie_t-3_augB1.jpg", "titan_clip_879_000060_movie_t-2_augB1.jpg", "titan_clip_879_000060_movie_t-1_augB1.jpg", "titan_clip_879_000060_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision", "environment_perception": "A narrow urban two-way street with edge lines but no centerline appears clean and smooth, and traffic is light as the ego vehicle proceeds straight. Ahead in the middle of the road, a pedestrian in a white shirt holds a bicycle and stands in the travel way, directly in the ego path. Slightly farther ahead, a small white van traveling in the same direction moves away slowly, setting the pace. On the right side, another white van and a scooter are parked at the curb, narrowing the usable roadway near the sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, holding a bicycle, and standing in the middle of the road. The driver should slow down to avoid collision since the pedestrian is blocking the lane."}
{"id": "train_07620", "split": "train", "clip_key": "2020-0127-132751_029127_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "029127"}, "frames": ["2020-0127-132751_029127_movie_t-3.jpg", "2020-0127-132751_029127_movie_t-2.jpg", "2020-0127-132751_029127_movie_t-1.jpg", "2020-0127-132751_029127_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane roadway runs between mid-rise buildings, with a raised fence along the right edge; the pavement appears dry and smooth, and traffic moves at a moderate pace. A white box truck directly ahead in the ego lane slows slightly, constraining the ego car's pace. In the adjacent left lane a white van travels ahead at a steady speed alongside the truck, limiting room to merge. Very close on the left, the front of a white passenger car sits alongside the ego vehicle, further restricting a lane change. Overhead and roadside circular signs show a posted speed of 50.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_07621", "split": "train", "clip_key": "titan_clip_1266_000498_movie", "source": {"subset": "titan", "scenario": "clip_1266", "frame": "000498"}, "frames": ["titan_clip_1266_000498_movie_t-3.jpg", "titan_clip_1266_000498_movie_t-2.jpg", "titan_clip_1266_000498_movie_t-1.jpg", "titan_clip_1266_000498_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around cyclist", "environment_perception": "An urban residential street curves gently right, a narrow two-way road without a center line and with smooth pavement; traffic is light. Ahead on the right side of the road, a cyclist wearing cream trousers, a brown top, and a cap rides toward the camera in the oncoming side, tracking near the curb and aligned with the ego vehicle's path. On the near right, a pedestrian carrying a bag walks toward the camera along the edge of the lane beside the buildings, close to the roadway. A speed limit sign stands on a pole to the left, and a convex mirror is mounted near the bend. Parked bicycles line the right wall, and the curve with closely spaced buildings limits sight distance.", "hazard_reasoning": "There is a cyclist wearing a cream pair of trousers, a brown top, a cap, riding a bicycle on the right side of the road, in front of the ego car. The driver should carefully manoeuvre around the cyclist to maintain a safe distance and avoid a collision."}
{"id": "train_07622", "split": "train", "clip_key": "2020-0221-115122_011882_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "011882"}, "frames": ["2020-0221-115122_011882_movie_t-3.jpg", "2020-0221-115122_011882_movie_t-2.jpg", "2020-0221-115122_011882_movie_t-1.jpg", "2020-0221-115122_011882_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs under an elevated structure with concrete walls on both sides; the pavement is dry and traffic is heavy and slow-moving. Ahead in the ego lane, a gray van slows with brake lights on as it follows a queue of vehicles, matching the congestion developing in front. To the right, a large white coach bus travels in the adjacent lane slightly ahead of the ego vehicle, creeping forward and keeping close to the orange lane line, which tightens lateral space but remains in its lane. Distant cars continue slowly under the flyover, and no unusual signs or hazards are visible beyond standard overhead direction boards.", "hazard_reasoning": "A gray van slowing down in the ego lane because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_07623", "split": "train", "clip_key": "titan_clip_912_000504_movie", "source": {"subset": "titan", "scenario": "clip_912", "frame": "000504"}, "frames": ["titan_clip_912_000504_movie_t-3.jpg", "titan_clip_912_000504_movie_t-2.jpg", "titan_clip_912_000504_movie_t-1.jpg", "titan_clip_912_000504_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow urban commercial street with a single marked lane and no median stretches ahead; the pavement looks smooth and traffic is light with no oncoming vehicles visible. On the right side of the road, a pedestrian wearing a black suit walks toward the ego vehicle along the lane, close to the travel path and potentially entering the ego lane. Beside him nearer the curb, another pedestrian also walks toward the ego, staying near the edge but still in the carriageway and likely to constrain the approach. Far ahead in the same lane, a small white car continues away through the shopfronts. Numerous sidewalk signboards line the curbs, narrowing lateral clearance.", "hazard_reasoning": "There is a pedestrian wearing a black suit, walking towards the ego car, on the right side of the road. The driver should yield to the pedestrian because they are approaching the vehicle's path and may cross unexpectedly, requiring the vehicle to give way."}
{"id": "train_07624", "split": "train", "clip_key": "titan_clip_569_000240_movie", "source": {"subset": "titan", "scenario": "clip_569", "frame": "000240"}, "frames": ["titan_clip_569_000240_movie_t-3.jpg", "titan_clip_569_000240_movie_t-2.jpg", "titan_clip_569_000240_movie_t-1.jpg", "titan_clip_569_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban side street with block paving and no center line runs through storefronts, the single shared lane appearing clear with very light vehicle traffic. A dark blue van is stopped along the left edge near the ego-vehicle, intruding slightly into the lane and narrowing the passage. Ahead on the left, a small group of pedestrians walks along the roadway by the restaurants, moving away from the camera and influencing the ego vehicle's pace. On the right side near a pole, a pedestrian wearing brown pants and carrying a white handbag stands at the curb close to the lane, potentially entering the ego path. A-frame signs and a narrow curb line the right edge but no traffic signals or speed signs are prominent.", "hazard_reasoning": "There is a pedestrian wearing a brown pant and carrying a white handbag, standing on the right side of the road. The driver should carefully manoeuvre around the pedestrian to prevent collision and ensure pedestrian safety."}
{"id": "train_07625", "split": "train", "clip_key": "2020-0131-135401_075038_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "075038"}, "frames": ["2020-0131-135401_075038_movie_t-3.jpg", "2020-0131-135401_075038_movie_t-2.jpg", "2020-0131-135401_075038_movie_t-1.jpg", "2020-0131-135401_075038_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs between mid- and high-rise buildings, the asphalt smooth and dry, and traffic is heavy and slowing. The black sedan directly ahead in the ego lane slows because of congestion further up the road. In the left lane, a large white box truck travels slightly ahead at low speed, constraining the flow and blocking some left-side view. To the right, a cement mixer truck runs alongside and inches forward, limiting opportunities for the ego vehicle to shift right. Farther ahead, a line of vans and cars queues beneath blue overhead direction signs, reinforcing the slow, stop-and-go movement.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_07626", "split": "train", "clip_key": "2020-0218-151547_009352_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "009352"}, "frames": ["2020-0218-151547_009352_movie_t-3.jpg", "2020-0218-151547_009352_movie_t-2.jpg", "2020-0218-151547_009352_movie_t-1.jpg", "2020-0218-151547_009352_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Be aware of the motorbike", "environment_perception": "An urban multi-lane arterial with a low central median runs between large commercial buildings; the pavement is clean and dry, and traffic moves at a moderate pace. A black motorbike directly ahead in the ego lane accelerates away, briefly leading the lane. Farther ahead, a large coach bus continues straight in the same lane at a steady speed, loosely setting the pace. In the adjacent right lanes, several cars and small trucks proceed straight with stable gaps. Pedestrians gather along both sidewalks near the crosswalks but remain off the roadway.", "hazard_reasoning": "There is a black motorbike accelerating in front of the ego car, in the ego car lane. Because it is speeding up towards a red light, it could brake suddenly or attempt to run the signal, so the driver should be aware and maintain a safe distance."}
{"id": "train_07627", "split": "train", "clip_key": "titan_clip_65_000288_movie", "source": {"subset": "titan", "scenario": "clip_65", "frame": "000288"}, "frames": ["titan_clip_65_000288_movie_t-3.jpg", "titan_clip_65_000288_movie_t-2.jpg", "titan_clip_65_000288_movie_t-1.jpg", "titan_clip_65_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow", "environment_perception": "A narrow urban two-way street with a single lane in each direction has smooth pavement and light traffic, but the flow slows where vehicles are stopped along the curb. A white van is stopped ahead on the left, encroaching into the ego lane and constraining the path. A pedestrian wearing brown pants runs across in front of the ego car from the left, detouring around the parked vehicle. Another pedestrian ahead near the centerline walks away from the camera as they pass the van and may remain in the lane. A triangular yield sign is visible on the left. A white sedan stands parked tight to the right curb along with scattered equipment, further narrowing the roadway and creating a tight passage.", "hazard_reasoning": "There is a pedestrian wearing brown pants, running in front of the ego car, from the left side, because of the parked vehicle. The pedestrian may enter your path unexpectedly due to the obstruction, so you must slow down to avoid a collision."}
{"id": "train_07628", "split": "train", "clip_key": "2020-0129-105040_000072_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-105040_000072_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-105040_000072_movie_t-3_augB1.jpg", "2020-0129-105040_000072_movie_t-2_augB1.jpg", "2020-0129-105040_000072_movie_t-1_augB1.jpg", "2020-0129-105040_000072_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "An urban scene shows a multi-lane arterial running left to right across the view with smooth pavement and light to moderate flow, while the ego car is stopped at a zebra crosswalk. A pedestrian very close to the camera walks from the left across the crosswalk ahead, occupying the ego vehicle's path and holding it. In the near lane of the cross street, a dark van proceeds leftward in front of the ego car and clears the junction. In the farther lane ahead, a white pick-up truck continues from right to left in front of the ego car, moving away and partially blocking the forward view.", "hazard_reasoning": "There is a white pick-up truck in front of the ego car driving from the right to the left side away from the ego car. This partially obstructing truck reduces forward visibility, so the driver should yield to avoid potential hidden hazards."}
{"id": "train_07629", "split": "train", "clip_key": "titan_clip_12_000138_movie", "source": {"subset": "titan", "scenario": "clip_12", "frame": "000138"}, "frames": ["titan_clip_12_000138_movie_t-3.jpg", "titan_clip_12_000138_movie_t-2.jpg", "titan_clip_12_000138_movie_t-1.jpg", "titan_clip_12_000138_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrian crossing", "environment_perception": "A narrow urban intersection on a two-way street has smooth pavement and light traffic. The ego vehicle waits at a zebra crossing before the cross street. Directly ahead, a pedestrian in a blue T-shirt and black pants pushes a cart across from left to right, moving away from the ego car and temporarily occupying its lane. Farther ahead, another pedestrian crosses right to left through the intersection, keeping the ego vehicle stopped. On the right side of the cross street, a black sedan creeps near the crosswalk, yielding and potentially turning into the ego street. Construction sheeting and orange cones line the left sidewalk, and parked vehicles on the right narrow sightlines near the corner.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt and black pants, pushing a cart and crossing the street in front of the ego car, away from the ego car. The driver should stop to yield to the pedestrian pushing a cart, avoiding a potential collision."}
{"id": "train_07630", "split": "train", "clip_key": "titan_clip_70_000108_movie", "source": {"subset": "titan", "scenario": "clip_70", "frame": "000108"}, "frames": ["titan_clip_70_000108_movie_t-3.jpg", "titan_clip_70_000108_movie_t-2.jpg", "titan_clip_70_000108_movie_t-1.jpg", "titan_clip_70_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow urban street with smooth asphalt runs between close-set buildings and a fenced walkway on the right; there is no centerline and traffic is light. A pedestrian wearing a gray shirt and white pants, carrying handbags, walks away from the ego vehicle near the middle of the road because a vehicle is parked on the left, and he may occupy the ego lane briefly. To his left, another pedestrian with a backpack walks ahead along the curb, keeping to the edge and not crossing. Ahead on the left, a white FedEx delivery truck is stopped partly in the lane, narrowing the roadway and prompting pedestrians to move around it. Green railings line the right side.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, white pants, and carrying handbags, walking in the middle of the road, away from the ego car, because of a parked vehicle on the left. The driver should yield because the pedestrian is forced into the travel lane and may cross unexpectedly."}
{"id": "train_07631", "split": "train", "clip_key": "titan_clip_23_000312_movie", "source": {"subset": "titan", "scenario": "clip_23", "frame": "000312"}, "frames": ["titan_clip_23_000312_movie_t-3.jpg", "titan_clip_23_000312_movie_t-2.jpg", "titan_clip_23_000312_movie_t-1.jpg", "titan_clip_23_000312_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street with stone paving and no centerline runs between tall buildings, and traffic is light at low speed. A pedestrian with an umbrella walks along the left edge away from the ego vehicle because the sidewalk is lined with traffic cones, keeping close to the travel lane. Farther ahead, another pedestrian steps out from the left and starts crossing toward the right where the ego path continues. A black minivan ahead along the right curb is stopped or parked, with another car farther ahead moving in the same direction, together tightening the usable lane. A 30 km/h speed limit sign stands on the left, and cones and curbside parking create a constricted corridor.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and walking on the left side of the road, away from the ego car, because the sidewalk is filled with traffic cones. The driver should manoeuvre carefully around the pedestrian to avoid collision."}
{"id": "train_07632", "split": "train", "clip_key": "titan_clip_688_000354_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_688_000354_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_688_000354_movie_t-3_augB1.jpg", "titan_clip_688_000354_movie_t-2_augB1.jpg", "titan_clip_688_000354_movie_t-1_augB1.jpg", "titan_clip_688_000354_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "An urban shopping street with a narrow two-way carriageway lacks a centerline; the pavement is smooth and traffic is very light with no moving vehicles. Ahead in the middle of the road, a pedestrian wearing a black shirt and black pants walks away from the ego vehicle along the lane, occupying the path and constraining the approach. Slightly ahead on the right, another pedestrian steps off the curb and begins crossing toward the center, which may enter the ego lane. Orange cones line the right curb and a row of parked bicycles stands by the left storefronts, narrowing space near the edges.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants, walking in the middle of the road, away from the ego car. The driver should be aware of the pedestrian's presence to avoid a potential collision."}
{"id": "train_07633", "split": "train", "clip_key": "titan_clip_960_000066_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_960_000066_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_960_000066_movie_t-3_augB1.jpg", "titan_clip_960_000066_movie_t-2_augB1.jpg", "titan_clip_960_000066_movie_t-1_augB1.jpg", "titan_clip_960_000066_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban side street with brick paving and a marked crosswalk lies ahead; the ego travels in a single lane with no median, the surface is smooth, and traffic is light. On the right, a man wearing a blue bandana pushes a hand cart and moves left across toward the crosswalk and into the ego path, so he may enter the lane. On the left, several pedestrians walk along the sidewalk near the corner by the crosswalk without stepping into the roadway. Farther ahead to the right, a cyclist rides along the street away from the camera and does not interact. A pedestrian crossing sign is posted, and a black car is parked on the right edge beyond the crosswalk.", "hazard_reasoning": "There is a man wearing a blue bandana, pushing a hand cart, and crossing the street from the right side to the left side, towards a crosswalk and the ego-car. The driver should manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_07634", "split": "train", "clip_key": "titan_clip_639_000192_movie", "source": {"subset": "titan", "scenario": "clip_639", "frame": "000192"}, "frames": ["titan_clip_639_000192_movie_t-3.jpg", "titan_clip_639_000192_movie_t-2.jpg", "titan_clip_639_000192_movie_t-1.jpg", "titan_clip_639_000192_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "A narrow urban side street without a centerline runs between buildings on the left and a white guardrail with a small plaza on the right; the asphalt looks smooth and there is no vehicular traffic. On the left edge ahead, a pedestrian wearing a black shirt and white shoes walks toward the ego vehicle along the roadway, potentially encroaching into the travel path. Farther ahead near the right railing, another pedestrian walks away in the same direction along the edge, remaining outside the lane. Stacked goods outside a shop on the left and parked bicycles in the plaza tighten the corridor but stay off the road.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and white shoes, walking toward the ego car on the left side of the road. The driver should be aware because the pedestrian may step into the lane unexpectedly."}
{"id": "train_07635", "split": "train", "clip_key": "titan_clip_25_000246_movie", "source": {"subset": "titan", "scenario": "clip_25", "frame": "000246"}, "frames": ["titan_clip_25_000246_movie_t-3.jpg", "titan_clip_25_000246_movie_t-2.jpg", "titan_clip_25_000246_movie_t-1.jpg", "titan_clip_25_000246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian pushing a cart.", "environment_perception": "An urban shopping street with a narrow single-lane roadway paved with brick, no median, and light vehicle traffic but heavy pedestrian activity at a zebra crossing. Several pedestrians ahead cross the road from both sides, moving slowly and occupying the lane, which constrains the ego vehicle's approach. On the right side, a pedestrian wearing a blue shirt and black pants pushes a cart toward the ego car along the edge of the roadway and may enter the lane. A silver sedan ahead moves leftward across the intersection, briefly passing through the ego vehicle's path before clearing. Orange cones and a parked bicycle line the right curb without obstructing travel.", "hazard_reasoning": "There is a pedestrian, wearing a blue shirt and black pants, and pushing a cart, walking on the right side of the road, towards the ego car. The driver should manoeuvre around the pedestrian pushing a cart to avoid a potential collision."}
{"id": "train_07636", "split": "train", "clip_key": "2020-0129-144857_023319_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "023319"}, "frames": ["2020-0129-144857_023319_movie_t-3.jpg", "2020-0129-144857_023319_movie_t-2.jpg", "2020-0129-144857_023319_movie_t-1.jpg", "2020-0129-144857_023319_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road under a viaduct climbs slightly with one lane per direction, a yellow center line, concrete side barriers, and a separated parallel lane to the right; the pavement is dry and traffic is light. Ahead in the ego lane, a black SUV slows and comes to a stop, holding the ego vehicle. In the oncoming lane, a black van approaches and passes by while staying in its lane with ample clearance. No salient traffic signals or pedestrians are visible, and the roadway is free of obstacles.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. Stop to avoid colliding with the black SUV halted at the red light."}
{"id": "train_07637", "split": "train", "clip_key": "titan_clip_924_000054_movie", "source": {"subset": "titan", "scenario": "clip_924", "frame": "000054"}, "frames": ["titan_clip_924_000054_movie_t-3.jpg", "titan_clip_924_000054_movie_t-2.jpg", "titan_clip_924_000054_movie_t-1.jpg", "titan_clip_924_000054_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban street runs between office buildings, with smooth asphalt, curbs and planter strips, no centerline, and light, steady traffic. A black van ahead in the same lane proceeds at a moderate pace and sets the ego vehicle's speed. Farther ahead, a small car continues in the same direction toward a distant pedestrian overpass, keeping its distance. On the right sidewalk, a pedestrian walks along the railing and remains outside the roadway. A large 30 speed marking is painted on the pavement.", "hazard_reasoning": "There are no hazards detected in this scenario, as no potential dangers, obstacles, or vulnerable road users are present, so the driver can proceed safely."}
{"id": "train_07638", "split": "train", "clip_key": "2020-0220-102630_003473_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "003473"}, "frames": ["2020-0220-102630_003473_movie_t-3.jpg", "2020-0220-102630_003473_movie_t-2.jpg", "2020-0220-102630_003473_movie_t-1.jpg", "2020-0220-102630_003473_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the minivan at the red light", "environment_perception": "An urban divided road with two same-direction lanes curves gently right, bordered by a planted median on the left and a white guardrail on the right; the pavement looks smooth and overall traffic is light, briefly bunching at a signalized intersection ahead. A black minivan directly ahead in the ego lane is stopped at the stop line because the traffic light is red, so the ego vehicle queues behind it. Farther ahead, several vehicles on the cross street pass through the junction from right to left during the red phase. The adjacent right lane near the ego vehicle appears clear with no nearby vehicles.", "hazard_reasoning": "There is a black minivan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid collision with the stopped vehicle and obey the red signal."}
{"id": "train_07639", "split": "train", "clip_key": "2020-0127-132751_103466_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "103466"}, "frames": ["2020-0127-132751_103466_movie_t-3.jpg", "2020-0127-132751_103466_movie_t-2.jpg", "2020-0127-132751_103466_movie_t-1.jpg", "2020-0127-132751_103466_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe following distance.", "environment_perception": "An urban two-lane, two-way road with a solid yellow centerline runs through a commercial area; the pavement is dry and traffic is light to moderate with no median. Ahead in the ego lane, a gray van slows because of traffic congestion ahead, so the ego vehicle follows at its pace. In the opposite lane, a motor scooter approaches near the centerline and passes by without deviating toward the ego lane. Farther ahead, a few oncoming cars move steadily through the corridor. On the right roadside, a cyclist and several pedestrians travel along the sidewalk, remaining outside the roadway.", "hazard_reasoning": "There is a gray van slowing down because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and prevent a collision due to the reduced speed of the van."}
{"id": "train_07640", "split": "train", "clip_key": "2020-0227-153144_019038_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "019038"}, "frames": ["2020-0227-153144_019038_movie_t-3.jpg", "2020-0227-153144_019038_movie_t-2.jpg", "2020-0227-153144_019038_movie_t-1.jpg", "2020-0227-153144_019038_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for pedestrians crossing ahead", "environment_perception": "An urban multi-lane road with a central railing median and smooth pavement carries heavy, slow traffic approaching an intersection. A black hatchback directly ahead in the ego lane is stopped because pedestrians are walking across the crosswalk, so it holds the ego vehicle. Several pedestrians cross from right to left in the marked crossing in front of the hatchback, keeping traffic halted. A cyclist near the right edge of the crosswalk rolls forward with them across the roadway in front of the queue.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane because of the pedestrians walking across the crosswalk ahead. Drivers should stop to yield to the pedestrians crossing ahead and avoid a collision."}
{"id": "train_07641", "split": "train", "clip_key": "2020-0218-103119_009957_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "009957"}, "frames": ["2020-0218-103119_009957_movie_t-3.jpg", "2020-0218-103119_009957_movie_t-2.jpg", "2020-0218-103119_009957_movie_t-1.jpg", "2020-0218-103119_009957_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban neighborhood street appears narrow with a single left-hand traffic lane, no median, and smooth pavement; traffic is light but a small box truck ahead occupies the ego lane and slows progress. The box truck in the same direction is stopped near an intersection, blocking the lane and determining the pace. On the left edge close to the ego vehicle stands a pedestrian wearing black pants and a black shirt with a backpack, waiting by the curb and potentially stepping into the lane. Ahead on the right side, another pedestrian walks along the curb toward the truck and may move into the roadway near its rear. Bicycles are parked along the right, tightening the available margin.", "hazard_reasoning": "There is a pedestrian wearing black pants and a black shirt, carrying a backpack, and standing on the left side of the road. The pedestrian's position near the truck partially blocks the sidewalk and may step into the roadway unexpectedly, requiring the driver to carefully manoeuvre to maintain safety."}
{"id": "train_07642", "split": "train", "clip_key": "titan_clip_461_000390_movie", "source": {"subset": "titan", "scenario": "clip_461", "frame": "000390"}, "frames": ["titan_clip_461_000390_movie_t-3.jpg", "titan_clip_461_000390_movie_t-2.jpg", "titan_clip_461_000390_movie_t-1.jpg", "titan_clip_461_000390_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban neighborhood street with a single narrow two-way carriageway, no median, and smooth pavement; traffic is light as the view stays steady. A white flatbed truck is parked along the oncoming-side curb on the right ahead of the ego car, encroaching into the roadway and narrowing the passage. A pedestrian stands on the left sidewalk near a storefront stairway, lingering but remaining off the road. Additional parked cars line the right side beyond the truck. A blue no-parking sign is posted on a pole to the left.", "hazard_reasoning": "There is a white truck parked on the right side of the road ahead of the ego-car. The parked truck obstructs the driver's view of potential hazards further down the street; therefore, the driver should carefully manoeuvre to avoid collision."}
{"id": "train_07643", "split": "train", "clip_key": "titan_clip_1237_000468_movie", "source": {"subset": "titan", "scenario": "clip_1237", "frame": "000468"}, "frames": ["titan_clip_1237_000468_movie_t-3.jpg", "titan_clip_1237_000468_movie_t-2.jpg", "titan_clip_1237_000468_movie_t-1.jpg", "titan_clip_1237_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian walking alongside road", "environment_perception": "An urban residential street in Japan with a narrow two-way carriageway lacking a centerline has smooth pavement and light traffic. Parked cars line both sides, slightly reducing the usable lane. Ahead on the right, a pedestrian in a white T-shirt and black pants carrying a black bag walks away from the ego car near the curb while handling a green cart, moving along the roadway and possibly edging into the ego path. No other moving vehicles are visible, and there is no oncoming flow. A pink car is parked at the right edge near a building entrance, with several more vehicles stationary in bays on the left, and a slight bend and buildings ahead limit distant visibility.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, black pants, and carrying a black bag, walking on the right side of the road, away from the ego car. The driver should be aware as the pedestrian may step into the roadway unexpectedly, particularly around the curve where visibility is limited."}
{"id": "train_07644", "split": "train", "clip_key": "titan_clip_1220_000072_movie", "source": {"subset": "titan", "scenario": "clip_1220", "frame": "000072"}, "frames": ["titan_clip_1220_000072_movie_t-3.jpg", "titan_clip_1220_000072_movie_t-2.jpg", "titan_clip_1220_000072_movie_t-1.jpg", "titan_clip_1220_000072_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban two-way street without a centerline runs between buildings; the pavement looks smooth and traffic is light with no oncoming vehicles. Ahead on the left curb, a gray truck is parked for unloading, its open rear protruding into the lane and constraining the ego vehicle's path. A pedestrian stands at the left edge near this truck, lingering by the curb and potentially stepping into the lane. On the right, bicycles are parked along the sidewalk and a car sits in a recessed garage, narrowing the corridor but not entering the roadway.", "hazard_reasoning": "There is a gray truck parked on the left side of the road because it is being unloaded. The truck occupies part of the driving lane and may force drivers to steer around it, so adjust your path and speed to pass safely."}
{"id": "train_07645", "split": "train", "clip_key": "titan_clip_863_000498_movie", "source": {"subset": "titan", "scenario": "clip_863", "frame": "000498"}, "frames": ["titan_clip_863_000498_movie_t-3.jpg", "titan_clip_863_000498_movie_t-2.jpg", "titan_clip_863_000498_movie_t-1.jpg", "titan_clip_863_000498_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist.", "environment_perception": "An urban two-way street with a single narrow lane each way climbs gently, with no median and smooth pavement, and traffic is light. On the right edge ahead, an oncoming cyclist in a white T-shirt and cap rides toward the ego vehicle while carrying a child, tracking close to the curb and potentially moving into the ego lane because there is no cycling lane. Farther ahead near the center of the ego lane, another cyclist travels uphill in the same direction and could constrain the ego car's pace. At the left foreground, a silver van stands partly in the lane at the curb, reducing the available width. Parked bicycles and the hill crest limit sight distance.", "hazard_reasoning": "There is a cyclist wearing a white t-shirt and a cap, carrying a baby, and cycling to the right side and towards the ego car, because there is no cycling lane. The driver should carefully manoeuvre around the cyclist carrying the child to avoid a collision."}
{"id": "train_07646", "split": "train", "clip_key": "titan_clip_1184_000462_movie", "source": {"subset": "titan", "scenario": "clip_1184", "frame": "000462"}, "frames": ["titan_clip_1184_000462_movie_t-3.jpg", "titan_clip_1184_000462_movie_t-2.jpg", "titan_clip_1184_000462_movie_t-1.jpg", "titan_clip_1184_000462_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the van", "environment_perception": "An urban narrow street with a single marked lane and smooth pavement shows light traffic as the ego vehicle proceeds straight. Ahead on the right curb, a white van is stopped with its rear gate open and its hazard lights on, partly occupying the lane and constraining the path. On the left near the curb, a pedestrian walks toward the roadway and starts crossing toward the right, which may bring him into the ego lane near the van. At the rear of the van, a person stands and moves slightly while handling items, which may extend into the lane. No other moving vehicles are visible.", "hazard_reasoning": "There is a white van with its rear gate open and with its hazard lights on, stopped on the right side of the street. The van's stopped position with its rear open may obstruct traffic and pose a collision risk, so the driver should carefully manoeuvre around the stopped van to maintain a safe distance and avoid hitting the vehicle or pedestrian."}
{"id": "train_07647", "split": "train", "clip_key": "2020-0203-114632_074178_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "074178"}, "frames": ["2020-0203-114632_074178_movie_t-3.jpg", "2020-0203-114632_074178_movie_t-2.jpg", "2020-0203-114632_074178_movie_t-1.jpg", "2020-0203-114632_074178_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes and a curbside sidewalk appears dry and in good condition, and traffic is heavy and slow-moving. A silver van directly ahead in the ego lane slows because a large truck is braking further ahead, so it controls the ego vehicle's pace. In the adjacent right lane, a white box truck creeps alongside, reducing space and limiting opportunities to pass. Farther ahead, a queue of trucks and cars inches toward the intersection. On the left sidewalk at a bus stop, two pedestrians wait behind a railing without approaching the roadway. An overhead blue guide sign indicates Kawaguchi to the left and Kameari and Umejima straight.", "hazard_reasoning": "There is a silver van slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The vehicles ahead are reducing speed, so the driver should slow down to maintain a safe following distance and avoid a sudden collision."}
{"id": "train_07648", "split": "train", "clip_key": "2020-0212-102546_085248_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "085248"}, "frames": ["2020-0212-102546_085248_movie_t-3.jpg", "2020-0212-102546_085248_movie_t-2.jpg", "2020-0212-102546_085248_movie_t-1.jpg", "2020-0212-102546_085248_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway-like corridor with high sound walls carries a single through lane in the ego direction, bounded by continuous concrete barriers; pavement is smooth and traffic is light. A white van ahead in the ego lane accelerates and pulls away as the open road in front of it remains clear, setting the pace. To the right, a large truck in a separated parallel lane behind posts rolls slowly beside the ego vehicle without entering the ego lane. Far ahead under the overpass, several vehicles proceed in the same direction with ample gaps. Temporary barriers narrow the roadway but no obstacles encroach on the lane.", "hazard_reasoning": "There is a white van driving away from the ego car, because the road ahead is clear, in front of the van. Following the van helps maintain a safe distance and anticipate any sudden speed changes."}
{"id": "train_07649", "split": "train", "clip_key": "2020-0217-110854_028312_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "028312"}, "frames": ["2020-0217-110854_028312_movie_t-3.jpg", "2020-0217-110854_028312_movie_t-2.jpg", "2020-0217-110854_028312_movie_t-1.jpg", "2020-0217-110854_028312_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with multiple same-direction lanes passes between tall buildings, the pavement smooth and dry with moderate flow. Overhead blue guide signs with straight arrows indicate routes toward Hachioji and Hatsudai. Ahead in the ego lane an orange-and-white airport limousine bus slows toward the intersection, reacting to a yellow traffic light and constraining the ego vehicle's pace. In the adjacent lane to the left, a white car continues straight slightly ahead without braking, maintaining separation from the bus. Farther left, other same-direction cars proceed beyond a red-painted lane section, while the right edge is lined by guardrails and a narrow side roadway.", "hazard_reasoning": "There is an orange bus slowing in the ego lane because of the yellow traffic light ahead at the intersection. The bus's deceleration requires the driver to reduce speed promptly to maintain a safe following distance and avoid a collision."}
{"id": "train_07650", "split": "train", "clip_key": "titan_clip_376_000438_movie", "source": {"subset": "titan", "scenario": "clip_376", "frame": "000438"}, "frames": ["titan_clip_376_000438_movie_t-3.jpg", "titan_clip_376_000438_movie_t-2.jpg", "titan_clip_376_000438_movie_t-1.jpg", "titan_clip_376_000438_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrian", "environment_perception": "A narrow urban commercial side street with brick paving and no center divider is shown, with light traffic as the ego vehicle proceeds straight on a two-way road. A black car ahead in the same direction rolls slowly down the lane, setting the pace. A pedestrian carrying a briefcase runs from the right side of the road to the left, crossing directly across the ego path. Ahead-left, another pedestrian steps from the left curb and walks diagonally toward the center, close to the ego lane. Bicycles are parked along the left edge and storefronts line both sides.", "hazard_reasoning": "A pedestrian carrying a briefcase is running from the right side of the road to the left side. Driver should yield because the pedestrian may enter the vehicle's path unexpectedly, increasing collision risk."}
{"id": "train_07651", "split": "train", "clip_key": "titan_clip_217_000288_movie", "source": {"subset": "titan", "scenario": "clip_217", "frame": "000288"}, "frames": ["titan_clip_217_000288_movie_t-3.jpg", "titan_clip_217_000288_movie_t-2.jpg", "titan_clip_217_000288_movie_t-1.jpg", "titan_clip_217_000288_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban intersection on a narrow two-way street has clean pavement and light traffic, with no median or divider. Ahead at the crosswalk, a man wearing a white shirt and gray pants crosses from the left side to the right directly in front of the ego car, moving steadily through its lane and controlling the pace. From the right, a small white box truck travels left across the intersection on the cross street, cutting across the ego vehicle's path before clearing. At the left corner, a silver van remains stopped near the curb, partly within the intersection but not advancing.", "hazard_reasoning": "There is a man wearing a white shirt and gray pants and crossing the street in front of the ego car, from the left side to the right side. The pedestrian is entering the vehicle's path, so you must yield to avoid a collision."}
{"id": "train_07652", "split": "train", "clip_key": "2020-0131-103016_085082_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "085082"}, "frames": ["2020-0131-103016_085082_movie_t-3.jpg", "2020-0131-103016_085082_movie_t-2.jpg", "2020-0131-103016_085082_movie_t-1.jpg", "2020-0131-103016_085082_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three lanes in the ego direction is separated from oncoming lanes by a raised planted median; the pavement is smooth and traffic flows at a moderate, steady pace. A small white kei car directly ahead in the center lane proceeds at a constant speed, effectively setting the ego vehicle's pace. A larger white van slightly ahead in the right lane continues straight alongside, remaining within its lane and not encroaching on the ego path. Farther ahead, additional cars in the same direction move toward an intersection with ample gaps, while oncoming traffic passes on the far side of the median. An overhead sign points to the Shinagawa City Office.", "hazard_reasoning": "There are no detected hazards in this situation, so no immediate warning is required."}
{"id": "train_07653", "split": "train", "clip_key": "titan_clip_1121_000024_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1121_000024_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1121_000024_movie_t-3_augB1.jpg", "titan_clip_1121_000024_movie_t-2_augB1.jpg", "titan_clip_1121_000024_movie_t-1_augB1.jpg", "titan_clip_1121_000024_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "be aware of the cyclist ahead", "environment_perception": "An urban residential scene shows the ego car on a very narrow two-way road with no center divider, smooth pavement, and light traffic; the road curves slightly right between buildings and hedges. An oncoming cyclist wearing black pants rides in the middle of the road toward the ego vehicle, occupying the travel way and constraining the ego's approach. Ahead on the right, a white van noses out from a driveway and stops at the edge of the lane, waiting for a gap. Two pedestrians stand on the right sidewalk near a building entrance, stationary and off the roadway. Buildings close to the curb create a limited view around the bend.", "hazard_reasoning": "There is a cyclist wearing black pant in the middle of the road cycling towards the ego car in the middle of the road. The cyclist is riding in the lane towards your vehicle, so be aware to avoid a collision."}
{"id": "train_07654", "split": "train", "clip_key": "titan_clip_547_000492_movie", "source": {"subset": "titan", "scenario": "clip_547", "frame": "000492"}, "frames": ["titan_clip_547_000492_movie_t-3.jpg", "titan_clip_547_000492_movie_t-2.jpg", "titan_clip_547_000492_movie_t-1.jpg", "titan_clip_547_000492_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow two-way urban street runs downhill between buildings, with no median, smooth pavement, and light traffic. A pedestrian on the right edge, carrying a handbag and wearing a yellow hat, walks toward the ego vehicle close to the curb and may step into the lane. Far ahead in the opposing lane, a small white van comes uphill toward the ego, reducing passing space on the narrow carriageway. Another pedestrian appears farther down on the left sidewalk walking away, with little effect on the ego path. A row of orange cones along the left edge narrows the margin but does not block the lane.", "hazard_reasoning": "There is a pedestrian carrying a handbag and wearing a yellow hat, and walking on the right side of the road, towards the ego car. The pedestrian may unpredictably enter the driving lane on this narrow street, so the driver should carefully manoeuvre around them."}
{"id": "train_07655", "split": "train", "clip_key": "titan_clip_101_000570_movie", "source": {"subset": "titan", "scenario": "clip_101", "frame": "000570"}, "frames": ["titan_clip_101_000570_movie_t-3.jpg", "titan_clip_101_000570_movie_t-2.jpg", "titan_clip_101_000570_movie_t-1.jpg", "titan_clip_101_000570_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "An urban commercial street with a narrow two-way carriageway and block-paved surface shows light traffic, no median, and a clean, dry pavement as the ego vehicle proceeds in the left lane toward a zebra-crossed side intersection. A white box truck is parked just ahead along the left side in the ego lane for unloading, occupying much of the lane and constraining the approach. A worker stands at the truck's open rear on the roadway handling crates within the ego path. On the right, a pedestrian by a shop walks toward the crosswalk while looking toward the road. Several scooters are parked along the left curb, further narrowing the usable lane; no oncoming vehicles are visible.", "hazard_reasoning": "There is white truck parked on the left side of the road, in the ego lane, because it is being unloaded. The partially obstructed lane requires the driver to maneuver carefully around the parked vehicle to maintain safe passage."}
{"id": "train_07656", "split": "train", "clip_key": "2020-0218-103119_010060_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "010060"}, "frames": ["2020-0218-103119_010060_movie_t-3.jpg", "2020-0218-103119_010060_movie_t-2.jpg", "2020-0218-103119_010060_movie_t-1.jpg", "2020-0218-103119_010060_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban street with a single lane in the ego direction approaches a signalized intersection, with dry pavement and light traffic and no median. A box truck is stopped directly ahead in the ego lane near the crosswalk, constraining the ego vehicle's pace. A pedestrian wearing a black sweater is in the middle of the road ahead, moving from the right toward the ego vehicle's path and crossing in front of the truck. Another pedestrian stands at the right edge near the curb, walking along the roadside without entering the lane.", "hazard_reasoning": "There is a pedestrian wearing a black sweater, crossing the street in the middle of the road, towards the ego car. The driver must stop to avoid colliding with the pedestrian crossing ahead."}
{"id": "train_07657", "split": "train", "clip_key": "2020-0226-140503_088490_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "088490"}, "frames": ["2020-0226-140503_088490_movie_t-3.jpg", "2020-0226-140503_088490_movie_t-2.jpg", "2020-0226-140503_088490_movie_t-1.jpg", "2020-0226-140503_088490_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single lane each way runs between mid-rise buildings; a solid yellow centerline divides damp, intact pavement, and traffic moves slowly in both directions. A small white hatchback directly ahead in the ego lane crawls forward in a queue, limiting the ego car's pace. To the right, a white minivan in the oncoming lane slows with congestion ahead and holds near the centerline without entering the ego lane. Behind the minivan, a large oncoming truck also creeps forward, reducing lateral clearance as opposing queues meet.", "hazard_reasoning": "There is a white minivan slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead on the road. The white minivan's deceleration signals upcoming congestion, so slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_07658", "split": "train", "clip_key": "titan_clip_694_000522_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_694_000522_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_694_000522_movie_t-3_augB1.jpg", "titan_clip_694_000522_movie_t-2_augB1.jpg", "titan_clip_694_000522_movie_t-1_augB1.jpg", "titan_clip_694_000522_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban back street with a single shared two-way lane and no centerline runs between small shops; the pavement looks smooth and traffic is light with no moving vehicles. A temporary construction fence along the right edge slightly narrows the roadway. On the left, a person in a baseball cap carrying a shoulder bag walks in the middle of the road toward the ego-vehicle, directly in its path. Beside them, another pedestrian approaches in the lane from the left frontage, occupying the left half of the roadway and constraining the ego car's pace. Farther ahead near the center, a pedestrian proceeds away along the lane, remaining in the vehicle's path.", "hazard_reasoning": "There is a woman dressed in a baseball cap, carrying a shoulder bag, and walking in the middle of the road to the left side towards the ego-car. The driver should carefully manoeuvre because the pedestrian is directly in the vehicle's path."}
{"id": "train_07659", "split": "train", "clip_key": "titan_clip_352_000510_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_352_000510_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_352_000510_movie_t-3_augB1.jpg", "titan_clip_352_000510_movie_t-2_augB1.jpg", "titan_clip_352_000510_movie_t-1_augB1.jpg", "titan_clip_352_000510_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with no centerline and smooth pavement runs between mid-rise buildings, and traffic is light. A pedestrian wearing black pants, a cap, and a backpack steps from the left curb into the ego lane ahead, moving diagonally across and directly occupying the vehicle's path. Far ahead near a slight bend, an oncoming white van approaches at low speed and remains distant. Along the right curb, a person stands next to several parked bicycles by a storefront, stationary and close to the edge. No traffic signals are visible, and the roadway is otherwise clear.", "hazard_reasoning": "There is a pedestrian wearing black pants, a cap, and carrying a backpack, who is moving from the left side of the road, into the ego lane, in front of the ego-car. The driver should slow down because the pedestrian is entering the travel lane and may cross unpredictably."}
{"id": "train_07660", "split": "train", "clip_key": "2020-0220-102630_043642_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "043642"}, "frames": ["2020-0220-102630_043642_movie_t-3.jpg", "2020-0220-102630_043642_movie_t-2.jpg", "2020-0220-102630_043642_movie_t-1.jpg", "2020-0220-102630_043642_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated structure, with three lanes in the ego direction and a fenced median on the right separating oncoming traffic; the asphalt is dry and traffic is moderate and slow. A white box truck directly ahead in the ego lane slows and the ego car follows, matching the caption. A dark tarp-covered small truck slightly ahead in the lane to the left continues straight at low speed, limiting an immediate merge. Farther left, a utility truck ahead proceeds slowly in its lane, keeping the general flow sluggish. A no U-turn sign is posted on the pillar at the right edge.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe distance and prevent a potential collision."}
{"id": "train_07661", "split": "train", "clip_key": "2020-0217-110854_014243_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "014243"}, "frames": ["2020-0217-110854_014243_movie_t-3.jpg", "2020-0217-110854_014243_movie_t-2.jpg", "2020-0217-110854_014243_movie_t-1.jpg", "2020-0217-110854_014243_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the gray SUV", "environment_perception": "An urban street with two same-direction lanes and a left curbside barrier has smooth pavement and heavy, queuing traffic near an intersection. A beige van directly ahead in the ego left lane is stopped and waits at the red signal, holding the ego vehicle. In the adjacent right lane, a small white kei van slightly ahead slows and inches forward, pacing the queue without merging. Farther ahead in the right lane, another white van remains stopped and contributes to the congestion.", "hazard_reasoning": "There is a gray SUV stopped in the ego lane, because of the red traffic light. The gray SUV is halted at the red light, requiring the driver to stop promptly to avoid a rear-end collision."}
{"id": "train_07662", "split": "train", "clip_key": "titan_clip_923_000174_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_923_000174_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_923_000174_movie_t-3_augB1.jpg", "titan_clip_923_000174_movie_t-2_augB1.jpg", "titan_clip_923_000174_movie_t-1_augB1.jpg", "titan_clip_923_000174_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban narrow two-way street with no median and smooth pavement carries light traffic as buildings line both sides, with scaffolding on the left and cones by shops on the right. A pedestrian on the left ahead walks away from the ego vehicle, keeping out in the lane because a white van is parked along the curb. An oncoming white van approaches near the center of the road at low speed, leaving limited space between it and the parked vehicle. Another pedestrian stands beside the parked van on the left, stationary at the edge of the lane. The parked van partly obstructs the roadway, and the scaffolding and cones further constrict the margins.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and walking on the left side of the road, away from the ego car, because of the parked vehicle. The pedestrian's altered path increases collision risk, so the driver should carefully manoeuvre around them to maintain safety."}
{"id": "train_07663", "split": "train", "clip_key": "titan_clip_1116_000090_movie", "source": {"subset": "titan", "scenario": "clip_1116", "frame": "000090"}, "frames": ["titan_clip_1116_000090_movie_t-3.jpg", "titan_clip_1116_000090_movie_t-2.jpg", "titan_clip_1116_000090_movie_t-1.jpg", "titan_clip_1116_000090_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully", "environment_perception": "An urban two-lane one-way street runs between mid-rise buildings; the pavement is smooth and dry and traffic remains light throughout. A white box truck ahead near the lane center moves steadily then slows, directly setting the ego vehicle's pace. On the left edge of the roadway, a pedestrian in a blue shirt walks toward the ego car along the gutter and may step into the lane. On the right, a cyclist travels forward along the sidewalk by a ramp and could merge at a driveway. Farther ahead in the right lane, a small car continues away without influencing the ego vehicle. A no-stopping sign is visible on the left.", "hazard_reasoning": "There's a pedestrian wearing a blue shirt and walking on the left side of the road, toward the ego car. The driver should manoeuvre carefully to avoid colliding with the pedestrian who may step into the lane unexpectedly."}
{"id": "train_07664", "split": "train", "clip_key": "titan_clip_641_000516_movie", "source": {"subset": "titan", "scenario": "clip_641", "frame": "000516"}, "frames": ["titan_clip_641_000516_movie_t-3.jpg", "titan_clip_641_000516_movie_t-2.jpg", "titan_clip_641_000516_movie_t-1.jpg", "titan_clip_641_000516_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian moving into lane", "environment_perception": "A narrow urban street with no centerline runs between tall buildings, the asphalt smooth and dry, and there are no moving vehicles. Ahead on the left, a pedestrian in a white T-shirt carrying a bag walks away along the left edge and drifts into the ego lane, potentially entering the path. On the right at the curb, another person in a white shirt stands looking at a device, remaining stationary near the edge but outside the lane. Farther ahead the road continues straight past storefronts, and an open parking garage entrance is visible on the left.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, carrying a bag, walking on the left side of the road, away from the ego car, into the ego lane. The pedestrian may enter the vehicle's path unexpectedly, so the driver should be cautious to avoid a collision."}
{"id": "train_07665", "split": "train", "clip_key": "titan_clip_1198_000042_movie", "source": {"subset": "titan", "scenario": "clip_1198", "frame": "000042"}, "frames": ["titan_clip_1198_000042_movie_t-3.jpg", "titan_clip_1198_000042_movie_t-2.jpg", "titan_clip_1198_000042_movie_t-1.jpg", "titan_clip_1198_000042_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian ahead", "environment_perception": "An urban back street with a single narrow two-way lane runs between shops, with no median and smooth pavement; traffic is light and slow. An oncoming motorbike approaches along the center of the lane ahead, easing forward and likely to pass close as it comes toward the ego vehicle. There is a pedestrian wearing a cap and blue shirt standing on the left edge of the road near the curb, close to the travel path and may enter the ego lane. Farther ahead a cyclist travels in the same direction near the left curb, potentially setting the pace. A no-parking sign is posted on the left, and parked bicycles line the right curb.", "hazard_reasoning": "There is a pedestrian wearing a cap and blue shirt, standing on the left side of the road. The pedestrian may step into the traffic lane unexpectedly, so the driver should be aware to avoid a collision."}
{"id": "train_07666", "split": "train", "clip_key": "2020-0220-151845_025288_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "025288"}, "frames": ["2020-0220-151845_025288_movie_t-3.jpg", "2020-0220-151845_025288_movie_t-2.jpg", "2020-0220-151845_025288_movie_t-1.jpg", "2020-0220-151845_025288_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with smooth pavement and no visible median; traffic is heavy and mostly stopped in queues. A black van directly ahead in the ego lane is stopped because of congestion and holds the ego vehicle's pace. To the left, a small light truck with a covered bed waits alongside in the adjacent lane, creeping forward with the queue and limiting chances to merge. On the right, a silver kei car slightly ahead and a red hatchback farther ahead move slowly in their lane, keeping tight gaps that confine the ego vehicle to its lane. Concrete pillars along the right edge narrow the view ahead.", "hazard_reasoning": "A black van is stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain a safe following distance and avoid a collision in the congested traffic."}
{"id": "train_07667", "split": "train", "clip_key": "titan_clip_915_000672_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_915_000672_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_915_000672_movie_t-3_augB1.jpg", "titan_clip_915_000672_movie_t-2_augB1.jpg", "titan_clip_915_000672_movie_t-1_augB1.jpg", "titan_clip_915_000672_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with shops lines a narrow single general-traffic lane with no median; the pavement looks smooth and vehicle flow is very light, effectively calmed by pedestrians in the roadway. A pedestrian in a black dress walks away from the ego vehicle in the center of the lane ahead, occupying the path and constraining progress. Slightly farther ahead to the right, a child moves diagonally across toward the left, likely to enter the ego lane. At the right edge, another adult steps off the sidewalk and starts to cross ahead, adding to the near-term conflict. A small delivery scooter stands parked along the left curb near storefronts, narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a black dress, walking in the middle of the road, away from the ego car. The pedestrian could step into the vehicle's path unexpectedly, so the driver should slow down to avoid a potential collision."}
{"id": "train_07668", "split": "train", "clip_key": "2020-0203-114632_081565_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "081565"}, "frames": ["2020-0203-114632_081565_movie_t-3.jpg", "2020-0203-114632_081565_movie_t-2.jpg", "2020-0203-114632_081565_movie_t-1.jpg", "2020-0203-114632_081565_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street runs under an elevated structure, with a single through lane bordered by a low planted median on the left and a fence-lined curb on the right; the pavement looks smooth and traffic is light. A silver van ahead in the ego lane moves steadily away from the ego car, loosely setting the pace while maintaining a clear gap. No pedestrians or cyclists are visible, and vehicles at the sides appear parked behind barriers and do not interact with the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07669", "split": "train", "clip_key": "2020-0226-101332_021238_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "021238"}, "frames": ["2020-0226-101332_021238_movie_t-3.jpg", "2020-0226-101332_021238_movie_t-2.jpg", "2020-0226-101332_021238_movie_t-1.jpg", "2020-0226-101332_021238_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around cyclist", "environment_perception": "An urban scene shows a signalized intersection with zebra crossings as the ego car approaches from a single-lane left-side road; the pavement is dry and cross-street flow is light. On the near left, a cyclist in a black jacket with a backpack rides away along the curb ahead of the ego vehicle, keeping to the left edge. Farther ahead near the opposite corner, another cyclist moves along the left shoulder of the far leg in the same general direction. Several cars travel along the cross street, and a line of vans is parked at the far right curb, narrowing that side and partially blocking sight lines. Overhead traffic lights control the junction.", "hazard_reasoning": "There is a cyclist wearing a black jacket, carrying a backpack, cycling on the left side of the road, away from the ego car. You should carefully manoeuvre around the cyclist as they are crossing the intersection and could enter your path."}
{"id": "train_07670", "split": "train", "clip_key": "titan_clip_544_000018_movie", "source": {"subset": "titan", "scenario": "clip_544", "frame": "000018"}, "frames": ["titan_clip_544_000018_movie_t-3.jpg", "titan_clip_544_000018_movie_t-2.jpg", "titan_clip_544_000018_movie_t-1.jpg", "titan_clip_544_000018_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban side street with a single narrow lane and no median runs between buildings; the asphalt is patched and worn, and traffic is light with no moving oncoming flow. Ahead on the right, two large box trucks stand along the curb one after the other, narrowing the passage and constraining the ego vehicle's path. On the left at a building entrance, a small white van is stationary and angled toward the roadway, positioned to enter the lane ahead of the ego vehicle. Farther ahead on the right, a dark car is parked off the lane near a driveway. No salient signals are visible.", "hazard_reasoning": "There are no immediate hazards; the path ahead is clear."}
{"id": "train_07671", "split": "train", "clip_key": "2020-0217-110854_029251_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "029251"}, "frames": ["2020-0217-110854_029251_movie_t-3.jpg", "2020-0217-110854_029251_movie_t-2.jpg", "2020-0217-110854_029251_movie_t-1.jpg", "2020-0217-110854_029251_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for the pedestrian.", "environment_perception": "In a dense urban setting, the ego-vehicle waits at a wide multi-lane signalized intersection with smooth pavement and moderate cross traffic. Directly in front, a bicyclist approaches from the right and rides across the near crosswalk leftward, passing close to the bumper and momentarily blocking the lane. A pedestrian wearing a black coat, a hat, and a face mask crosses the same crosswalk from left to right ahead, also occupying the ego lane. At the left side, a small scooter travels rightward through the intersection in front of the vehicle as cross traffic proceeds. Distant vehicles continue along the far carriageway.", "hazard_reasoning": "There is a pedestrian wearing a black coat, a hat, and a face mask, and crossing at a crosswalk from the left to the right. The driver should stop to allow the pedestrian to safely cross and prevent a collision."}
{"id": "train_07672", "split": "train", "clip_key": "2020-0203-114632_024171_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_024171_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_024171_movie_t-3_augB1.jpg", "2020-0203-114632_024171_movie_t-2_augB1.jpg", "2020-0203-114632_024171_movie_t-1_augB1.jpg", "2020-0203-114632_024171_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial in Toshima City runs straight with same-direction lanes separated from oncoming traffic by a painted median; the pavement is smooth and traffic is moderate as the scene approaches a zebra?rosswalk intersection. A white box truck ahead in the ego lane slows toward the crosswalk, constraining the ego vehicle's pace. To the right, a white van in the right-turn lane also slows near the intersection, remaining alongside but outside the ego path. Several pedestrians stand on the sidewalks at the corners near the crosswalk without stepping into the road. Oncoming cars beyond the median flow steadily in the opposite direction. An overhead sign identifies Toshima City.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The driver should slow down because the truck's reduced speed may require extra stopping distance to avoid a rear-end collision."}
{"id": "train_07673", "split": "train", "clip_key": "2020-0203-154554_043978_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "043978"}, "frames": ["2020-0203-154554_043978_movie_t-3.jpg", "2020-0203-154554_043978_movie_t-2.jpg", "2020-0203-154554_043978_movie_t-1.jpg", "2020-0203-154554_043978_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road runs under an elevated structure, with two through lanes and a right-side merge lane; the surface is dry and traffic is heavy and crawling. A gray sedan immediately ahead in the ego lane slows because of congestion ahead, setting the pace for the ego vehicle. On the right, a white SUV in the ending merge lane brakes at the chevron taper and prepares to merge left into the ego lane. Farther ahead, a queue of same-direction cars bunches under the structure and repeatedly stops.", "hazard_reasoning": "There's a gray sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to avoid a collision with the slower moving sedan and adapt to traffic congestion."}
{"id": "train_07674", "split": "train", "clip_key": "2020-0204-150838_076983_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "076983"}, "frames": ["2020-0204-150838_076983_movie_t-3.jpg", "2020-0204-150838_076983_movie_t-2.jpg", "2020-0204-150838_076983_movie_t-1.jpg", "2020-0204-150838_076983_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane one-way roadway runs beside an elevated structure with guardrails and a sound barrier; the dry pavement looks smooth and traffic flows lightly. A dark tarp-covered semi-truck ahead in the right lane pulls away with clear space in front of it, effectively leading the vehicles ahead. A small white box truck slightly farther ahead in the left lane continues straight at a steady speed, remaining in its lane and not constraining the ego vehicle. A few more vehicles appear farther ahead in both lanes moving smoothly.", "hazard_reasoning": "There is a black semi-truck driving away from the ego car, in the ego lane, because the road ahead is clear, in front of the semi-truck. The leading truck blocks the driver's view of the road ahead, so maintaining proper following distance allows time to react to unexpected changes."}
{"id": "train_07675", "split": "train", "clip_key": "titan_clip_775_000570_movie", "source": {"subset": "titan", "scenario": "clip_775", "frame": "000570"}, "frames": ["titan_clip_775_000570_movie_t-3.jpg", "titan_clip_775_000570_movie_t-2.jpg", "titan_clip_775_000570_movie_t-1.jpg", "titan_clip_775_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one lane each direction has smooth asphalt and no median, and traffic is light with no moving vehicles close by. On the right side ahead, a pedestrian wearing a cap, a white shirt, and black pants walks toward the ego vehicle along the curb beside a parked van and may step near the travel lane. A dark van is parked at the right curb and a black minivan is stopped on the left, narrowing the passage and creating a mild pinch point.", "hazard_reasoning": "There is a pedestrian wearing a cap, a white shirt, and black pants and walking on the right side of the road towards the ego car. The driver should carefully manoeuvre around this pedestrian to avoid a potential collision."}
{"id": "train_07676", "split": "train", "clip_key": "2020-0206-101736_040718_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "040718"}, "frames": ["2020-0206-101736_040718_movie_t-3.jpg", "2020-0206-101736_040718_movie_t-2.jpg", "2020-0206-101736_040718_movie_t-1.jpg", "2020-0206-101736_040718_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop promptly", "environment_perception": "An urban multi-lane road lined with mid-rise buildings has smooth pavement and heavy stop-and-go flow, with no physical median visible. A white sedan directly ahead in the ego lane is stopped due to congestion, holding the ego vehicle. In the neighboring lanes ahead, small vans and trucks inch forward in a long queue, constraining gaps for any lane change. Farther ahead in the same direction, more cars are stacked in the distance, keeping speeds low. A pedestrian on the left sidewalk walks along the curb and remains clear of the roadway.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop promptly to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_07677", "split": "train", "clip_key": "titan_clip_506_000150_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_506_000150_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_506_000150_movie_t-3_augB1.jpg", "titan_clip_506_000150_movie_t-2_augB1.jpg", "titan_clip_506_000150_movie_t-1_augB1.jpg", "titan_clip_506_000150_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrians ahead.", "environment_perception": "A narrow urban side street with an unmarked single lane runs between mid-rise buildings; the asphalt is dry with a few patches and there is no moving vehicular traffic. Ahead in the lane, two pedestrians, one in a black T-shirt and one in a blue T-shirt, walk away from the car in the middle of the roadway and occupy the ego path, constraining its pace. On the right, several pedestrians stand and walk along the sidewalk behind guardrails without stepping into the lane. Farther ahead near the left edge, another person walks along the curb, remaining clear of the vehicle's path.", "hazard_reasoning": "There are two pedestrians wearing black and blue t-shirts walking in front of, and away from, the ego car. They are walking directly ahead and could step into your path, so be aware of pedestrians ahead."}
{"id": "train_07678", "split": "train", "clip_key": "2020-0228-150133_069306_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "069306"}, "frames": ["2020-0228-150133_069306_movie_t-3.jpg", "2020-0228-150133_069306_movie_t-2.jpg", "2020-0228-150133_069306_movie_t-1.jpg", "2020-0228-150133_069306_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two same-direction through lanes and a separate right-turn lane, no physical median, and smooth pavement approaches a large signalized intersection; traffic is moderate. A gray sedan directly ahead in the ego lane is stopped at the stop line because the signal is red, holding the ego vehicle. A white mini-van in the adjacent left through lane waits alongside, also stationary for the light. Vehicles on the cross street move right to left through the junction, crossing the ego path while the approach remains halted, and some oncoming traffic is visible beyond the intersection. Overhead traffic lights facing the ego show red.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid colliding with the stopped sedan at the red light."}
{"id": "train_07679", "split": "train", "clip_key": "titan_clip_56_000594_movie", "source": {"subset": "titan", "scenario": "clip_56", "frame": "000594"}, "frames": ["titan_clip_56_000594_movie_t-3.jpg", "titan_clip_56_000594_movie_t-2.jpg", "titan_clip_56_000594_movie_t-1.jpg", "titan_clip_56_000594_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street with a single lane in each direction has smooth pavement and light traffic. A blue delivery truck is stopped ahead in the ego lane with its rear open, narrowing the passage and constraining the approach. A pedestrian wearing a white shirt crosses ahead from left to right in front of the ego car, moving into the lane. Another pedestrian walks along the right sidewalk beside two advertising carts that protrude slightly into the roadway, while parked bicycles line the curb and a cone sits near the left edge. A speed limit sign showing 30 is posted on a pole to the left.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, crossing the street in front of the ego car, from the left side to the right side. You should slow down to avoid collision since the pedestrian is crossing directly in your path."}
{"id": "train_07680", "split": "train", "clip_key": "2020-0212-150403_012270_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "012270"}, "frames": ["2020-0212-150403_012270_movie_t-3.jpg", "2020-0212-150403_012270_movie_t-2.jpg", "2020-0212-150403_012270_movie_t-1.jpg", "2020-0212-150403_012270_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a painted yellow median and smooth pavement is shown, and traffic is moderate; construction activity lines the right side on the oncoming carriageway. A black SUV directly ahead in the ego lane slows, constraining the ego car's pace. Across the median, a cement mixer and several other oncoming work trucks are stopped along the curb by a building site, while another oncoming truck passes in the near lane, none encroaching on the ego path. Parked vans line the left curb ahead but remain outside the travel lane.", "hazard_reasoning": "There is a black SUV slowing in the ego lane, in front of the ego car. Since the SUV is decelerating, the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_07681", "split": "train", "clip_key": "titan_clip_1265_000186_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1265_000186_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1265_000186_movie_t-3_augB1.jpg", "titan_clip_1265_000186_movie_t-2_augB1.jpg", "titan_clip_1265_000186_movie_t-1_augB1.jpg", "titan_clip_1265_000186_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street with edge lines but no center divider has smooth pavement and light traffic. Ahead in the oncoming direction, a cyclist pulling a small cart rides in the middle of the road toward the camera, keeping away from pedestrians walking along the right side of the roadway, and may continue through the ego vehicle's path. To the right ahead, a small group of pedestrians walks in the roadway near the curb, slowing the oncoming cyclist and partially narrowing the passage. Bicycles are parked along the left sidewalk, and bagged trash sits by the right curb but remains outside the travel lane.", "hazard_reasoning": "There is a cyclist pulling a cart and cycling in the middle of the road, towards the ego car, because there are pedestrians walking on the right side of the road. The cyclist's position and direct approach increase collision risk, so the driver should slow down to maintain safety."}
{"id": "train_07682", "split": "train", "clip_key": "2020-0129-105040_047261_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "047261"}, "frames": ["2020-0129-105040_047261_movie_t-3.jpg", "2020-0129-105040_047261_movie_t-2.jpg", "2020-0129-105040_047261_movie_t-1.jpg", "2020-0129-105040_047261_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated expressway, with two lanes in the ego direction and a guardrail along the right edge; the pavement is dry and smooth and traffic is light. The road stays straight in alternating sun and shade. A white wagon in the left lane draws level from the rear and continues ahead alongside, parallel to the ego vehicle. Farther ahead in the left lane, a small box truck proceeds steadily and slows the lane beside us. In the ego lane, a dark sedan far ahead cruises in the same direction and loosely sets the pace. Concrete columns and the guardrail confine the right boundary, with no pedestrians or cyclists visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07683", "split": "train", "clip_key": "titan_clip_1348_000552_movie", "source": {"subset": "titan", "scenario": "clip_1348", "frame": "000552"}, "frames": ["titan_clip_1348_000552_movie_t-3.jpg", "titan_clip_1348_000552_movie_t-2.jpg", "titan_clip_1348_000552_movie_t-1.jpg", "titan_clip_1348_000552_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban commercial street with a narrow two-way carriageway lacking a centerline rises gently uphill, the patterned pavement in good condition and traffic very light with no moving vehicles. A pedestrian in a blue T-shirt carrying a backpack walks ahead along the left side away from the ego car and is near the travel path. Another pedestrian on the right a little farther ahead walks uphill beside the curb in the same direction, remaining at the edge. No salient signals or speed signs are visible, and the lane is clear of parked vehicles or obstructions.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt, carrying a backpack, walking on the left side of the road, away from the ego car. The pedestrian's proximity to the roadway requires the driver to carefully manoeuvre to avoid veering too close."}
{"id": "train_07684", "split": "train", "clip_key": "titan_clip_497_000594_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_497_000594_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_497_000594_movie_t-3_augB1.jpg", "titan_clip_497_000594_movie_t-2_augB1.jpg", "titan_clip_497_000594_movie_t-1_augB1.jpg", "titan_clip_497_000594_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way street with a single lane in each direction runs slightly uphill and curves right; the asphalt is smooth and traffic is light with the oncoming lane clear. On the left ahead, a worker pushes a cart of boxes and helps unload a van, standing at the edge of the ego lane and encroaching into the path. Immediately ahead, a small white van is stopped at the left curb with its rear hatch open, occupying part of the lane and narrowing the passage. Farther ahead in the same direction, a larger box truck stands stationary near the left curb, further constricting the lane. Parked cars line the right-side driveways.", "hazard_reasoning": "There is a pedestrian pushing a cart and standing on the left side of the road, because he is helping a person unload a van. The driver should manoeuvre carefully around the pedestrian to avoid a collision as they may move into the lane unexpectedly."}
{"id": "train_07685", "split": "train", "clip_key": "titan_clip_594_000072_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_594_000072_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_594_000072_movie_t-3_augB1.jpg", "titan_clip_594_000072_movie_t-2_augB1.jpg", "titan_clip_594_000072_movie_t-1_augB1.jpg", "titan_clip_594_000072_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow street lined with shops has smooth dry pavement, no center divider, and very light vehicular traffic. Two pedestrians ahead in the ego lane, a man in light clothing beside a woman in a white skirt, walk away near the center and occupy the vehicle's path. Farther ahead, a man in a blue shirt and brown pants walks in the middle of the road away from the ego car, continuing in the travel lane and potentially affecting the approach. Another pedestrian keeps to the right-side curb farther up the street and moves away. A parking sign is visible on the right, and parked delivery bicycles along the left curb encroach slightly into the lane.", "hazard_reasoning": "There is a man in a blue shirt and brown pants, walking in the middle of the road, away from the ego car. The pedestrian's position in the lane increases collision risk if the vehicle maintains its speed, so the driver should slow down."}
{"id": "train_07686", "split": "train", "clip_key": "titan_clip_925_000558_movie", "source": {"subset": "titan", "scenario": "clip_925", "frame": "000558"}, "frames": ["titan_clip_925_000558_movie_t-3.jpg", "titan_clip_925_000558_movie_t-2.jpg", "titan_clip_925_000558_movie_t-1.jpg", "titan_clip_925_000558_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "An urban commercial street without a centerline stretches ahead, its smooth pavement bordered by storefronts and trees, and traffic is light with no moving vehicles close by. Parked cars line both sides and narrow the usable lane. Ahead on the right, a white van is stopped at the curb because it is being unloaded, with its rear door open and a person working at the back near the roadway edge, reducing clearance for the ego vehicle's path. On the left near the camera, a silver minivan is parked, further tightening the lane. No oncoming traffic is visible down the street, and additional parked vehicles ahead shape a narrow central corridor.", "hazard_reasoning": "There is a white van stopped on the right side of the road, because it is being unloaded. The driver should carefully manoeuvre around the stationary van to maintain lane position and avoid hitting the person or the load."}
{"id": "train_07687", "split": "train", "clip_key": "titan_clip_1370_000144_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1370_000144_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1370_000144_movie_t-3_augB1.jpg", "titan_clip_1370_000144_movie_t-2_augB1.jpg", "titan_clip_1370_000144_movie_t-1_augB1.jpg", "titan_clip_1370_000144_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban two-way street with a single narrow lane in each direction runs between mid-rise buildings; the pavement is dry and traffic is light. Two female pedestrians carrying handbags walk away from the camera along the left edge in the ego lane because the sidewalk is blocked by adjacent construction, so they occupy part of the driving path. A white van is stopped ahead on the left near the curb, further constricting the lane. On the right, roadwork crews and machinery sit behind cones and barriers that narrow the roadway, with temporary signs and barricades marking the work zone. No oncoming vehicles are close.", "hazard_reasoning": "There are two female pedestrians, both carrying handbags, walking together down the left side of the road, in the ego lane, away from the ego-car, because the sidewalk is blocked by construction. The driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_07688", "split": "train", "clip_key": "2020-0129-144857_034102_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "034102"}, "frames": ["2020-0129-144857_034102_movie_t-3.jpg", "2020-0129-144857_034102_movie_t-2.jpg", "2020-0129-144857_034102_movie_t-1.jpg", "2020-0129-144857_034102_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with smooth pavement and a right-side guardrail; traffic is heavy and largely stop-and-go. A black minivan directly ahead in the ego lane is stationary with brake lights, holding the ego vehicle because of the congestion ahead. Farther ahead in the same lane, a white box truck inches forward, keeping the queue compressed and constraining the pace. To the left, a green van in the adjacent lane crawls alongside, leaving little room for a lane change. Buildings and storefronts line the left side, and no salient traffic signals are visible.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision when traffic halts unexpectedly."}
{"id": "train_07689", "split": "train", "clip_key": "titan_clip_1358_000486_movie", "source": {"subset": "titan", "scenario": "clip_1358", "frame": "000486"}, "frames": ["titan_clip_1358_000486_movie_t-3.jpg", "titan_clip_1358_000486_movie_t-2.jpg", "titan_clip_1358_000486_movie_t-1.jpg", "titan_clip_1358_000486_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian crossing", "environment_perception": "A narrow urban commercial street with a single lane curves right, lined with shops, bollards, and dry, intact pavement. Traffic is light with one vehicle far ahead. Ahead near the marked crosswalk, a pedestrian in a pink shirt carrying an umbrella crosses from right to left into the street and may enter the ego lane. On the left edge, other pedestrians walk along the curb by the crosswalk close to the travel lane. A small white vehicle far ahead proceeds along the curve. A blue pedestrian crossing sign marks the crosswalk, and parked bicycles line the left side.", "hazard_reasoning": "There is a pedestrian wearing pink shirt, carrying an umbrella, and crossing the street to the left side. The driver must yield to avoid endangering this pedestrian who is entering the vehicle's path."}
{"id": "train_07690", "split": "train", "clip_key": "2020-0205-152530_044008_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-152530_044008_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-152530_044008_movie_t-3_augB1.jpg", "2020-0205-152530_044008_movie_t-2_augB1.jpg", "2020-0205-152530_044008_movie_t-1_augB1.jpg", "2020-0205-152530_044008_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with good pavement carries moderate bidirectional traffic, with only painted lane dividers separating oncoming flow on the right as the ego vehicle approaches a wide intersection. Ahead in the ego lane, a white box truck slows, constraining the ego car's pace. Slightly ahead in the adjacent right lane, a dark sedan continues straight at a steady speed alongside without merging. Near the left curb, a silver van proceeds in its lane with similar speed. Pedestrians on the left sidewalk walk near the crossing but stay clear of the roadway.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The slowing truck ahead reduces the gap and could force a rapid brake, so you should slow down to maintain a safe distance."}
{"id": "train_07691", "split": "train", "clip_key": "2020-0214-145407_045047_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "045047"}, "frames": ["2020-0214-145407_045047_movie_t-3.jpg", "2020-0214-145407_045047_movie_t-2.jpg", "2020-0214-145407_045047_movie_t-1.jpg", "2020-0214-145407_045047_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes leads to a signalized intersection on smooth asphalt, and traffic is moderate under a green light. A black taxi is directly ahead in the ego lane, proceeding slowly toward the crosswalk and constraining our pace. On the left, a black hatchback changes right into the ego lane and may merge ahead of us. Ahead-right, a red sedan in the adjacent lane advances toward the junction while remaining in its lane and not affecting our path.", "hazard_reasoning": "There is a black hatchback on the left side of the road, changing lanes to the ego lane. The driver should slow down to maintain safe spacing and avoid a potential side collision as the vehicle merges into the ego lane under moderate traffic."}
{"id": "train_07692", "split": "train", "clip_key": "2020-0129-144857_048414_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "048414"}, "frames": ["2020-0129-144857_048414_movie_t-3.jpg", "2020-0129-144857_048414_movie_t-2.jpg", "2020-0129-144857_048414_movie_t-1.jpg", "2020-0129-144857_048414_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated roadway toward a signalized intersection, the pavement dry and in good condition, with moderate same-direction traffic. A white box truck is directly ahead in the ego lane moving forward toward the junction and sets the ego car's pace. Slightly ahead to the left, a silver van in the adjacent lane proceeds toward the intersection in parallel. On the far right, several cyclists are at the crosswalk and ride through the intersection, remaining outside the ego lane but relevant if turning occurs. Pedestrians are visible on both sidewalks near the corners. A small curbed island and painted gore sit at the right edge of the roadway near the intersection.", "hazard_reasoning": "There is a white truck moving forward in the front of the ego-car, in the ego-lane. The red light ahead may cause the truck to stop unexpectedly, so the driver should follow the vehicle ahead to maintain a safe distance."}
{"id": "train_07693", "split": "train", "clip_key": "2020-0210-101957_024123_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "024123"}, "frames": ["2020-0210-101957_024123_movie_t-3.jpg", "2020-0210-101957_024123_movie_t-2.jpg", "2020-0210-101957_024123_movie_t-1.jpg", "2020-0210-101957_024123_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth asphalt shows heavy, slow traffic, the ego vehicle traveling in the left lane beside a hedge-lined curb. A gray motorcycle is stopped directly ahead in the ego lane, queuing for a red light and holding the ego car. Farther ahead in the same lane a white van also stands in the line of vehicles. In the adjacent right lane, a black taxi alongside and a small flatbed truck ahead-right inch forward in the queue, occupying space next to the ego lane and constraining any immediate maneuver.", "hazard_reasoning": "There is a gray motorcycle stopped in the ego lane, in front of the ego car, because of the red traffic lights. The driver should stop to avoid a rear-end collision with the halted motorcycle under the red light."}
{"id": "train_07694", "split": "train", "clip_key": "2020-0220-151845_002006_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "002006"}, "frames": ["2020-0220-151845_002006_movie_t-3.jpg", "2020-0220-151845_002006_movie_t-2.jpg", "2020-0220-151845_002006_movie_t-1.jpg", "2020-0220-151845_002006_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to maintain safe distance.", "environment_perception": "An urban commercial street with two same-direction lanes and no median appears, the pavement dry as traffic moves in a heavy, stop-and-go flow. A green city bus is directly ahead in the ego lane and stands still because of congestion, holding the ego vehicle. In the right lane, a black taxi slightly ahead creeps forward, limiting a lane change to pass the bus. Farther ahead in that lane, another car queues and brakes. A signalized intersection is visible down the street.", "hazard_reasoning": "There is a green bus stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_07695", "split": "train", "clip_key": "2020-0206-101736_042705_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "042705"}, "frames": ["2020-0206-101736_042705_movie_t-3.jpg", "2020-0206-101736_042705_movie_t-2.jpg", "2020-0206-101736_042705_movie_t-1.jpg", "2020-0206-101736_042705_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with two lanes in each direction and no median is shown; the asphalt is dry and the overall flow is moderate with a slow patch near an intersection ahead. A white hatchback directly ahead in the ego lane slows because of a short queue farther up, constraining the ego vehicle. To the front left, a black station wagon in the adjacent curbside lane proceeds straight at a similar pace and stays in its lane. In the oncoming lanes to the right, a dark heavy truck advances toward the camera and continues past within its lane. Flexible posts and a cone stand on the centerline at the crosswalk, narrowing the middle of the roadway but not blocking the ego lane.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The slowing hatchback indicates congestion has built up, requiring the driver to slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_07696", "split": "train", "clip_key": "titan_clip_952_000336_movie", "source": {"subset": "titan", "scenario": "clip_952", "frame": "000336"}, "frames": ["titan_clip_952_000336_movie_t-3.jpg", "titan_clip_952_000336_movie_t-2.jpg", "titan_clip_952_000336_movie_t-1.jpg", "titan_clip_952_000336_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street without a center line runs between buildings, pavement is smooth, and traffic is light. An oncoming white minivan ahead slows near a driveway in the middle of the road and limits the passing space. On the right side, a pedestrian wearing a white shirt and black pants walks toward the ego vehicle along the roadway edge and could step into the ego path. Several vans are stopped close to both curbs, including near left and right of the camera, narrowing the lane and creating blind spots at the entrances.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the right side of the road, toward the ego car. The pedestrian's presence on the roadway poses a collision risk, so slowing down gives the driver more time to react and avoid an accident."}
{"id": "train_07697", "split": "train", "clip_key": "2020-0225-102455_005242_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "005242"}, "frames": ["2020-0225-102455_005242_movie_t-3.jpg", "2020-0225-102455_005242_movie_t-2.jpg", "2020-0225-102455_005242_movie_t-1.jpg", "2020-0225-102455_005242_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-lane road in the same direction curves right past mid-rise buildings, with smooth pavement and a painted median reinforced by flexible posts; overall traffic is light. Ahead in the ego lane, a gray dump truck slows to turn left at the signalized intersection, constraining the ego car's pace. In the adjacent right lane slightly ahead, a white box truck continues forward through the curve and pulls away. Farther right beyond the divider, a large white truck travels in the opposite direction on a parallel roadway and remains separated. Overhead traffic lights and left-side railings and curb islands frame the junction.", "hazard_reasoning": "A gray truck is slowing in front of the ego car in the ego lane, because it is turning left. You should slow down to maintain a safe distance and prepare for the truck's left turn."}
{"id": "train_07698", "split": "train", "clip_key": "titan_clip_1163_000378_movie", "source": {"subset": "titan", "scenario": "clip_1163", "frame": "000378"}, "frames": ["titan_clip_1163_000378_movie_t-3.jpg", "titan_clip_1163_000378_movie_t-2.jpg", "titan_clip_1163_000378_movie_t-1.jpg", "titan_clip_1163_000378_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian in roadway", "environment_perception": "A narrow urban single-lane street with brick pavement runs between shops, and traffic is very light while a parked delivery truck partly blocks the left side. Ahead in the middle of the road, a pedestrian wearing a green shirt and blue pants walks away from the ego vehicle, using the center because the parked vehicle occupies the side and remaining in the ego path. To the left, the delivery truck is stopped with its rear open and a worker beside it, narrowing the roadway and constraining the ego car's progress. Another pedestrian near the truck walks ahead along the lane edge close to the ego path. A portable No Parking sign stands on the right sidewalk, and traffic cones and small crates lie near the truck in the roadway as minor obstacles.", "hazard_reasoning": "There is a pedestrian wearing a green shirt and blue pants, walking in the middle of the road, away from the ego car, because of the parked vehicle. The pedestrian is in the traffic lane and may be obscured by the parked truck, so the driver should yield to avoid collision."}
{"id": "train_07699", "split": "train", "clip_key": "2020-0129-105040_059111_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "059111"}, "frames": ["2020-0129-105040_059111_movie_t-3.jpg", "2020-0129-105040_059111_movie_t-2.jpg", "2020-0129-105040_059111_movie_t-1.jpg", "2020-0129-105040_059111_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrians near the curb", "environment_perception": "A narrow urban two-way street with red pavement and no median stretches ahead, surface in good condition and traffic light. The ego vehicle approaches a zebra crossing. On the right edge ahead, two pedestrians wearing black push a stroller toward the ego car along the roadside, potentially edging into the travel lane. Slightly beyond them on the right, a cyclist proceeds slowly near the curb in the same corridor, which may constrain passing space. On the left foreground, a pedestrian with a small dog walks along the sidewalk without entering the road. A bold zebra crossing spans the lane, and a white mini-truck is parked at the right curb just past it, further narrowing the passage.", "hazard_reasoning": "There are two pedestrians wearing all black and pushing a stroller, walking along the right side of the road, toward the ego car. Since these pedestrians are approaching the roadway and could enter the vehicle's path unexpectedly, the driver should be cautious to anticipate their movement."}
{"id": "train_07700", "split": "train", "clip_key": "titan_clip_82_000108_movie", "source": {"subset": "titan", "scenario": "clip_82", "frame": "000108"}, "frames": ["titan_clip_82_000108_movie_t-3.jpg", "titan_clip_82_000108_movie_t-2.jpg", "titan_clip_82_000108_movie_t-1.jpg", "titan_clip_82_000108_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of traffic cones", "environment_perception": "In a dense urban area, the ego vehicle proceeds in the left lane of a narrow two-way road with smooth pavement and very light traffic. A small white mini-truck is far ahead in the same lane, continuing straight at a steady pace and not constraining the ego path. Oncoming lanes remain empty. Traffic cones line the left side of the road, marking a roadside work zone with barricades that slightly narrows the left edge. Metal bollards and a stairway border the right sidewalk, and no salient signals or additional hazards appear.", "hazard_reasoning": "There are traffic cones along the left side of the road. These cones mark a work area and may narrow the lane, so drivers should be aware to maintain safe clearance."}
{"id": "train_07701", "split": "train", "clip_key": "2020-0207-101955_081630_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "081630"}, "frames": ["2020-0207-101955_081630_movie_t-3.jpg", "2020-0207-101955_081630_movie_t-2.jpg", "2020-0207-101955_081630_movie_t-1.jpg", "2020-0207-101955_081630_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with smooth, dry pavement runs alongside a sound barrier on the left and a guardrail median on the right; traffic is moderate and slows intermittently. A blue flatbed truck directly ahead in the ego lane slows and queues because of congestion ahead, constraining the ego car's pace. Farther ahead in the same line, a white box truck also creeps forward, creating the backup the blue truck follows. In the adjacent right lane, a white car travels steadily slightly ahead, holding its lane and not merging.", "hazard_reasoning": "There is a blue truck slowing down ahead of the ego car, because of traffic congestion ahead. Because the truck is decelerating due to congestion, you should slow down to maintain a safe following distance."}
{"id": "train_07702", "split": "train", "clip_key": "titan_clip_407_000426_movie", "source": {"subset": "titan", "scenario": "clip_407", "frame": "000426"}, "frames": ["titan_clip_407_000426_movie_t-3.jpg", "titan_clip_407_000426_movie_t-2.jpg", "titan_clip_407_000426_movie_t-1.jpg", "titan_clip_407_000426_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban commercial street with block-paved surface and no lane markings appears, with light traffic and the carriageway partly obstructed by delivery vehicles on the right. A white truck is parked immediately to the right being unloaded, leaving minimal clearance beside the ego vehicle. Farther ahead on the right, another white box truck stands with its rear open while a worker unloads, further narrowing the roadway and constraining the pace. A pedestrian ahead at the left storefront steps slightly into the roadway and walks along the edge, which may place him in the vehicle's path. Additional pedestrians walk farther ahead, and no oncoming vehicles appear.", "hazard_reasoning": "There is a white truck parked on the right side of the road, because it is being unloaded. The parked truck obstructs part of the roadway, reducing forward visibility and posing a collision risk if approached without caution."}
{"id": "train_07703", "split": "train", "clip_key": "2020-0129-144857_002662_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "002662"}, "frames": ["2020-0129-144857_002662_movie_t-3.jpg", "2020-0129-144857_002662_movie_t-2.jpg", "2020-0129-144857_002662_movie_t-1.jpg", "2020-0129-144857_002662_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane in each direction, no physical median, and dry, slightly worn pavement carries moderate flow. The ego car proceeds in the left lane as a black minivan directly ahead in the ego lane slows because of congestion ahead, constraining our pace. An oncoming red minivan passes near the centerline and remains in its lane. A white box truck farther ahead approaches in the opposite lane. Several pedestrians gather along the left sidewalk near a bus stop and walk past the railing, staying off the roadway. Overhead signage shows a 40 km/h speed limit.", "hazard_reasoning": "There is a black minivan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The slowing minivan indicates reduced speed ahead, so the driver should slow down to maintain a safe following distance and prevent a collision."}
{"id": "train_07704", "split": "train", "clip_key": "titan_clip_537_000162_movie", "source": {"subset": "titan", "scenario": "clip_537", "frame": "000162"}, "frames": ["titan_clip_537_000162_movie_t-3.jpg", "titan_clip_537_000162_movie_t-2.jpg", "titan_clip_537_000162_movie_t-1.jpg", "titan_clip_537_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian on the road", "environment_perception": "A narrow urban side street with a single unmarked lane and no median runs between buildings; the pavement is smooth and traffic is light with no moving vehicles. A pedestrian wearing a white shirt walks ahead along the right edge, moving away from the ego vehicle and staying near the curb. A white flatbed truck is parked on the right near the corner, narrowing the roadway beside a taped-off work area with construction materials. The street leads toward a small intersection at the far end.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the right side of the road, away from the ego car. The pedestrian and the parked truck partially obstruct the lane, reducing visibility and increasing the risk the pedestrian may step into the vehicle's path, so the driver should be aware of the pedestrian on the road."}
{"id": "train_07705", "split": "train", "clip_key": "2020-0205-152530_000812_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "000812"}, "frames": ["2020-0205-152530_000812_movie_t-3.jpg", "2020-0205-152530_000812_movie_t-2.jpg", "2020-0205-152530_000812_movie_t-1.jpg", "2020-0205-152530_000812_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane street with no median runs between storefronts and leafless roadside trees; pavement looks smooth and traffic is light. Ahead in the ego lane, a white truck slows near the zebra crossing and constrains the ego vehicle's pace. On the left side by the crosswalk, two pedestrians approach the curb and pause close to the roadway. On the right sidewalk, a person with a bicycle moves toward the crossing and could enter the ego path. An overhead pedestrian-crossing sign is visible above the crosswalk.", "hazard_reasoning": "There is a white truck slowing in the ego lane, away from the ego car. The driver should reduce speed to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_07706", "split": "train", "clip_key": "2020-0204-103442_034557_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "034557"}, "frames": ["2020-0204-103442_034557_movie_t-3.jpg", "2020-0204-103442_034557_movie_t-2.jpg", "2020-0204-103442_034557_movie_t-1.jpg", "2020-0204-103442_034557_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban elevated roadway with two same-direction lanes runs under a viaduct, bounded by concrete side walls; the pavement is smooth and traffic is slow-moving and dense. Directly ahead, a white box truck in the ego lane slows and queues because of congestion further up, controlling the ego vehicle's speed. In the adjacent right lane, a blue minivan slightly ahead creeps forward beside the ego path in the parallel queue. Farther ahead under the structure, a silver sedan and another truck in the right lane roll slowly with minimal gaps. A large blue directional sign to the left gives route guidance.", "hazard_reasoning": "There is a white truck slowing in the ego lane because of traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and avoid a rear-end collision under these conditions."}
{"id": "train_07707", "split": "train", "clip_key": "2020-0131-103016_048639_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "048639"}, "frames": ["2020-0131-103016_048639_movie_t-3.jpg", "2020-0131-103016_048639_movie_t-2.jpg", "2020-0131-103016_048639_movie_t-1.jpg", "2020-0131-103016_048639_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with good pavement and no physical median approaches a signalized intersection, and traffic is moderate, slowing to a stop. A black minivan ahead in the ego lane is stopped for the red light, constraining the ego vehicle's pace. To the right, a blue sedan in the adjacent lane advances slowly toward the intersection while staying in its lane. On the left sidewalk near the junction, several pedestrians wait at the corner. The overhead traffic signal ahead shows red.", "hazard_reasoning": "There is a black minivan stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver should stop to avoid colliding with the stopped minivan at the red light."}
{"id": "train_07708", "split": "train", "clip_key": "2020-0203-114632_078371_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "078371"}, "frames": ["2020-0203-114632_078371_movie_t-3.jpg", "2020-0203-114632_078371_movie_t-2.jpg", "2020-0203-114632_078371_movie_t-1.jpg", "2020-0203-114632_078371_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with good pavement carries moderate traffic, with two lanes in the ego direction and oncoming lanes to the right as the road approaches a signalized intersection and crosswalks. A white mini van travels ahead in the ego lane moving away and maintaining a steady pace, matching the note that a white van drives in the ego lane away from the ego car. To its right, a boxy delivery truck continues ahead in the adjacent same-direction lane and slows slightly near the crosswalk, influencing the ego vehicle's speed. At the far right edge, an oncoming silver minivan proceeds toward the camera in its lane, remaining separate from the ego path. Overhead traffic lights are visible at the junction but their aspects are not clearly readable.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. The white van ahead could brake suddenly, so the driver should maintain awareness and distance under this situation."}
{"id": "train_07709", "split": "train", "clip_key": "2020-0228-102841_062223_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "062223"}, "frames": ["2020-0228-102841_062223_movie_t-3.jpg", "2020-0228-102841_062223_movie_t-2.jpg", "2020-0228-102841_062223_movie_t-1.jpg", "2020-0228-102841_062223_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two to three lanes in the ego direction runs beside a grassy median, the pavement smooth and traffic moderate but compressing toward a signalized intersection ahead. A dark SUV directly ahead in the ego lane travels slowly, setting the ego car's pace. Slightly farther ahead, a black hatchback in front shifts one lane to the left because of traffic congestion ahead, moving across the lane line away from the ego lane. In the left lane, a white box truck ahead also slows, contributing to the queue, while oncoming cars pass on the far side of the median.", "hazard_reasoning": "There is a black Hatchback in front of the ego car that is changing lane to the left because of traffic congestion ahead. The driver should slow down to anticipate the hatchback's abrupt lane change and maintain a safe following distance."}
{"id": "train_07710", "split": "train", "clip_key": "titan_clip_287_000438_movie", "source": {"subset": "titan", "scenario": "clip_287", "frame": "000438"}, "frames": ["titan_clip_287_000438_movie_t-3.jpg", "titan_clip_287_000438_movie_t-2.jpg", "titan_clip_287_000438_movie_t-1.jpg", "titan_clip_287_000438_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban two-way street without a centerline runs between shops; the pavement looks smooth and motor traffic is light. On the right side of the lane, a pedestrian in gray pants and a white shirt walks toward the ego-vehicle within the ego lane, narrowing space ahead. Farther ahead near the center, two pedestrians continue away along the lane, constraining the vehicle's pace. At the right curb, a person with a bicycle waits beside the roadway and may enter the lane. A stopped white van on the right and the nose of a blue truck on the left further constrict the entry to the street.", "hazard_reasoning": "There is a male pedestrian wearing gray pants and a white shirt, walking on the right side of the road, towards the ego-car, in the ego lane. The pedestrian is approaching in the ego lane, requiring a careful manoeuvre to avoid collision."}
{"id": "train_07711", "split": "train", "clip_key": "2020-0225-102455_073683_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "073683"}, "frames": ["2020-0225-102455_073683_movie_t-3.jpg", "2020-0225-102455_073683_movie_t-2.jpg", "2020-0225-102455_073683_movie_t-1.jpg", "2020-0225-102455_073683_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way road with a signalized intersection and zebra crossings lies ahead; pavement is smooth and traffic is moderate to heavy as vehicles queue toward the light, with oncoming traffic in the right-side lanes. The ego vehicle follows a white van directly ahead in the same lane, which slows because traffic is congested ahead, constraining the ego car's pace. To the right, a gray wagon in the adjacent same-direction lane moves slightly ahead at a similar slow speed, limiting an immediate lane change. To the left, another white van in the neighboring lane also rolls slowly with the line of cars and remains roughly parallel to the ego path.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_07712", "split": "train", "clip_key": "2020-0129-144857_031720_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "031720"}, "frames": ["2020-0129-144857_031720_movie_t-3.jpg", "2020-0129-144857_031720_movie_t-2.jpg", "2020-0129-144857_031720_movie_t-1.jpg", "2020-0129-144857_031720_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs under an elevated structure, with a guarded ramp along the right and smooth pavement; traffic is moderate with a brief slowdown ahead. A black minivan directly in front in the ego lane slows as it closes on a small white truck decelerating further ahead, constraining the ego car's pace. The white truck ahead continues easing off speed in the same lane. On the left side, a cyclist rides forward along the sidewalk parallel to traffic and remains outside the roadway.", "hazard_reasoning": "There is a black minivan slowing in the ego lane, in front of the ego car, because of a truck slowing ahead. The minivan is decelerating ahead, so you should slow down to keep a safe following distance and prevent a collision."}
{"id": "train_07713", "split": "train", "clip_key": "titan_clip_676_000042_movie", "source": {"subset": "titan", "scenario": "clip_676", "frame": "000042"}, "frames": ["titan_clip_676_000042_movie_t-3.jpg", "titan_clip_676_000042_movie_t-2.jpg", "titan_clip_676_000042_movie_t-1.jpg", "titan_clip_676_000042_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban commercial street with a narrow two-way carriageway lacks a centerline or median; the asphalt looks smooth and traffic is light with no oncoming vehicles visible. A dark car ahead in the ego lane moves away at low speed, setting the pace. A white delivery truck stands along the left curb ahead, protruding into the lane and reducing passing space. A pedestrian wearing a black shirt walks on the left side of the road away from the ego car near the truck, keeping to the edge. Bicycles and shop signs line the right storefront, leaving a tight corridor.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, walking on the left side of the road, away from the ego car. The pedestrian could enter the roadway unexpectedly, so the driver should be aware of their presence to avoid a potential collision."}
{"id": "train_07714", "split": "train", "clip_key": "titan_clip_241_000444_movie", "source": {"subset": "titan", "scenario": "clip_241", "frame": "000444"}, "frames": ["titan_clip_241_000444_movie_t-3.jpg", "titan_clip_241_000444_movie_t-2.jpg", "titan_clip_241_000444_movie_t-1.jpg", "titan_clip_241_000444_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrians.", "environment_perception": "A narrow urban street with brick paving and no median runs between tall buildings, and overall traffic moves slowly due to roadside activity. On the left ahead, a man wearing a white shirt and black pants walks away along the curb, close to the travel lane and potentially affecting the ego car's pace. On the right ahead, a white van stands with its rear door open while cargo boxes are visible, partially encroaching into the lane and constricting the passage. Beside it, a black car waits near the curb, further narrowing space for through traffic. Far ahead in the same direction, a small car continues straight along the corridor. Cones and a parked bicycle line the edges, adding minor roadside obstacles.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, and walking on the left side of the road, away from the ego car. The pedestrian may cross or step into the lane due to the obstructed right lane, so the driver should yield to pedestrians to avoid a collision."}
{"id": "train_07715", "split": "train", "clip_key": "2020-0205-103411_000680_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "000680"}, "frames": ["2020-0205-103411_000680_movie_t-3.jpg", "2020-0205-103411_000680_movie_t-2.jpg", "2020-0205-103411_000680_movie_t-1.jpg", "2020-0205-103411_000680_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop immediately for pedestrians", "environment_perception": "An urban street with construction hoarding lines a single left-side traffic lane that curves right, with no median and smooth pavement; traffic is light but slow near a crosswalk. A black sedan directly ahead in the ego lane is stopped because pedestrians are walking across the zebra crossing, so it blocks the ego vehicle's progress. Several pedestrians cross from right to left in front of the queue, continuing to pass through the ego vehicle's path. A red taxi ahead to the right waits near the crossing and appears queued to move after the pedestrians clear, potentially affecting the gap. A blue pedestrian-crossing sign is posted above the crosswalk, and cones and railings mark the roadside work area.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car because of pedestrians walking in a crosswalk in front of it. The sedan has halted for crossing pedestrians, so you must stop to prevent a collision with both the stationary vehicle and the pedestrians."}
{"id": "train_07716", "split": "train", "clip_key": "titan_clip_1064_000432_movie", "source": {"subset": "titan", "scenario": "clip_1064", "frame": "000432"}, "frames": ["titan_clip_1064_000432_movie_t-3.jpg", "titan_clip_1064_000432_movie_t-2.jpg", "titan_clip_1064_000432_movie_t-1.jpg", "titan_clip_1064_000432_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban side street with a single shared lane and no centerline runs past shops, the asphalt smooth and dry; there is no clear sidewalk on the left, and vehicle traffic is light with only the ego car moving. A pedestrian in a black T-shirt on the left walks toward the ego car while talking on the phone, moving in the roadway because there is no sidewalk and may enter the vehicle's path. Several pedestrians ahead near the center of the lane walk both toward and away from the camera, some crossing diagonally, which constrains the ego car's pace. On the right edge, two pedestrians close to the curb walk along and edge toward the lane, creating tight clearance for passage. A parking sign is visible on the right.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, talking on the phone, walking on the left side of the road, towards the ego car because there is no sidewalk. The driver should slow down to maintain a safe distance and avoid a collision with the pedestrian in the travel lane."}
{"id": "train_07717", "split": "train", "clip_key": "titan_clip_357_000396_movie", "source": {"subset": "titan", "scenario": "clip_357", "frame": "000396"}, "frames": ["titan_clip_357_000396_movie_t-3.jpg", "titan_clip_357_000396_movie_t-2.jpg", "titan_clip_357_000396_movie_t-1.jpg", "titan_clip_357_000396_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of the cyclist", "environment_perception": "A narrow urban commercial street with a single undivided lane runs between shops; the surface alternates between asphalt and block paving and traffic is light. A cyclist wearing a helmet and carrying a bag rides toward the ego vehicle from ahead along the right side of the road, approaching in the oncoming direction and likely to pass close to the vehicle. On the right sidewalk slightly ahead, two pedestrians walk near the curb by storefronts, remaining on the sidewalk but close to the travel lane. Farther ahead near an intersection, several pedestrians cross the street from left to right, briefly occupying the roadway. Parked bicycles and shop signboards line the left curb, narrowing the usable lane.", "hazard_reasoning": "There is a cyclist wearing a helmet and carrying a bag, cycling towards the ego car on the right side of the road. The cyclist's proximity and direction may intersect the vehicle's path, so the driver should be cautious of the cyclist."}
{"id": "train_07718", "split": "train", "clip_key": "titan_clip_109_000540_movie", "source": {"subset": "titan", "scenario": "clip_109", "frame": "000540"}, "frames": ["titan_clip_109_000540_movie_t-3.jpg", "titan_clip_109_000540_movie_t-2.jpg", "titan_clip_109_000540_movie_t-1.jpg", "titan_clip_109_000540_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with a single narrow lane and smooth pavement is lined with parked cars on the left, so traffic in the ego direction is light and slow. On the left near the ego, a black sedan is parked partly in the ego lane because all other parking spots are unavailable, narrowing the usable lane. Farther ahead, a dark SUV in the center slows and edges around the parked row, momentarily setting the pace for the ego vehicle. On the right, a man on the sidewalk walks along the storefronts without approaching the roadway. No signals or unusual controls are prominent.", "hazard_reasoning": "There is a black sedan parked on the left side of the road, in the ego lane, because all other parking spots are unavailable. The driver should carefully manoeuvre around the parked vehicle to avoid collision."}
{"id": "train_07719", "split": "train", "clip_key": "titan_clip_110_000432_movie", "source": {"subset": "titan", "scenario": "clip_110", "frame": "000432"}, "frames": ["titan_clip_110_000432_movie_t-3.jpg", "titan_clip_110_000432_movie_t-2.jpg", "titan_clip_110_000432_movie_t-1.jpg", "titan_clip_110_000432_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around parked van safely", "environment_perception": "An urban shopping street with one narrow lane in each direction has smooth pavement and light, slow-moving traffic. A white mini truck ahead in the ego lane proceeds cautiously as the corridor narrows. A black van is parked on the right for unloading, with two workers and a blue handcart beside it, partly occupying the oncoming lane and forming a roadside obstruction. A cyclist waits at the left edge by the crosswalk near the ego path and may enter the lane. Far ahead, a small vehicle approaches in the oncoming lane without affecting the ego vehicle yet.", "hazard_reasoning": "There is a black van parked on the right side of the road, because it is being unloaded. This parked van narrows the driving lane and poses a collision risk, so the driver should manoeuvre around it safely."}
{"id": "train_07720", "split": "train", "clip_key": "titan_clip_1277_000222_movie", "source": {"subset": "titan", "scenario": "clip_1277", "frame": "000222"}, "frames": ["titan_clip_1277_000222_movie_t-3.jpg", "titan_clip_1277_000222_movie_t-2.jpg", "titan_clip_1277_000222_movie_t-1.jpg", "titan_clip_1277_000222_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban back street with a single narrow two-way lane and no median runs between tall buildings; the asphalt is smooth and vehicle traffic is light as the car proceeds steadily. On the left side ahead, two men wearing white shirts and black pants walk together toward the ego vehicle along the curb and may drift near the lane. In the middle distance, a pedestrian crosses the roadway from right to left at a calm pace, briefly occupying the ego path. Near the left foreground, another white-shirted man moves out from a recessed doorway and continues along the edge close to the roadway. A parked scooter and some street fixtures line the sides but do not intrude into the lane.", "hazard_reasoning": "There are two men wearing white shirts and black pants and walking together on the left side of the road, towards the ego car. Driver should carefully manoeuvre around the pedestrians to avoid potential collision."}
{"id": "train_07721", "split": "train", "clip_key": "2020-0131-135401_003053_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003053"}, "frames": ["2020-0131-135401_003053_movie_t-3.jpg", "2020-0131-135401_003053_movie_t-2.jpg", "2020-0131-135401_003053_movie_t-1.jpg", "2020-0131-135401_003053_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with narrow single lanes and no median is shown; the pavement is dry and traffic is light and steady. A white box truck ahead in the ego lane pulls away as traffic ahead moves, setting the ego vehicle's pace. On the left at the near crosswalk, a man walks along the curb toward the corner without entering the lane. Farther ahead on the left sidewalk, two pedestrians move in the same direction beside the roadway while remaining on the sidewalk.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because traffic ahead is moving. The parked truck on the right blocks the intersection view, so following the vehicle ahead helps reveal hidden hazards and maintain a safe distance."}
{"id": "train_07722", "split": "train", "clip_key": "2020-0210-155354_004809_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "004809"}, "frames": ["2020-0210-155354_004809_movie_t-3.jpg", "2020-0210-155354_004809_movie_t-2.jpg", "2020-0210-155354_004809_movie_t-1.jpg", "2020-0210-155354_004809_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one lane per direction runs toward a low railway overpass, with no median and smooth asphalt; traffic in the ego lane is heavy and mostly stopped. A white car directly ahead in the ego lane is stationary in a queue toward the underpass, holding the ego-vehicle, consistent with congestion. A cyclist is alongside the left curb near the ego-vehicle and rolls forward slowly, close enough to drift into the lane as gaps appear. On the right sidewalk, several pedestrians gather by shops behind cones and railings, walking along the curb but not stepping into the roadway. A black van stands at the left curb just ahead, partially narrowing the lane. A no-parking sign is visible on the left.", "hazard_reasoning": "There is a white sedan stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should stop immediately to maintain a safe distance and avoid a rear-end collision under these congested conditions."}
{"id": "train_07723", "split": "train", "clip_key": "2020-0217-110854_074555_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "074555"}, "frames": ["2020-0217-110854_074555_movie_t-3.jpg", "2020-0217-110854_074555_movie_t-2.jpg", "2020-0217-110854_074555_movie_t-1.jpg", "2020-0217-110854_074555_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban two-way road with one lane in each direction is separated by a solid orange centerline; the pavement is dry and traffic is heavy and mostly stopped near a junction. A white pickup-style truck is immediately ahead in the ego lane, stopped because of congestion ahead and blocking the ego vehicle's path. Oncoming traffic in the right lane, including a black car and a white van, creeps past toward the camera along the opposite lane, keeping close to the centerline and limiting lateral space. A signalized intersection and roadside signs are visible ahead, with vehicles queued on both approaches.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop to avoid collision with the stopped truck."}
{"id": "train_07724", "split": "train", "clip_key": "titan_clip_1024_000558_movie", "source": {"subset": "titan", "scenario": "clip_1024", "frame": "000558"}, "frames": ["titan_clip_1024_000558_movie_t-3.jpg", "titan_clip_1024_000558_movie_t-2.jpg", "titan_clip_1024_000558_movie_t-1.jpg", "titan_clip_1024_000558_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "The ego-car proceeds along a narrow urban residential road without a centerline, bordered by buildings and walls on dry, smooth pavement. Traffic is light, with no vehicles ahead in the ego path and no oncoming traffic visible. On the left edge ahead, a pedestrian wearing a blue shirt and carrying a handbag walks away from the ego-car along the roadside, close to the curb and near the travel lane. A white minivan is parked along the left beside the pedestrian, narrowing the passage and constraining the ego-vehicle's clearance. A utility pole stands close to the right curb as the street continues straight.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, carrying a handbag, and walking, on the left side of the road, away from the ego-car. The driver should maintain a safe distance and carefully manoeuvre to avoid colliding with the pedestrian."}
{"id": "train_07725", "split": "train", "clip_key": "2020-0129-105040_047561_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "047561"}, "frames": ["2020-0129-105040_047561_movie_t-3.jpg", "2020-0129-105040_047561_movie_t-2.jpg", "2020-0129-105040_047561_movie_t-1.jpg", "2020-0129-105040_047561_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial runs under an elevated expressway, with a guardrail median on the right separating oncoming lanes; pavement is smooth and the traffic flow is light to moderate as the scene proceeds under shadow. A white van runs alongside at very close range on the far-left edge near the curb, moving in the same direction and limiting the ego vehicle's ability to shift left. Ahead in the same lane, a small hatchback continues straight at a steady speed and loosely sets the pace. In the adjacent right lane farther ahead, another car proceeds straight with a clear gap and poses no immediate interaction. Overhead directional signs and the structure's pillars are visible, with no temporary obstacles.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07726", "split": "train", "clip_key": "titan_clip_633_000078_movie", "source": {"subset": "titan", "scenario": "clip_633", "frame": "000078"}, "frames": ["titan_clip_633_000078_movie_t-3.jpg", "titan_clip_633_000078_movie_t-2.jpg", "titan_clip_633_000078_movie_t-1.jpg", "titan_clip_633_000078_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down and watch for pedestrians.", "environment_perception": "An urban residential street climbs gently ahead, a narrow two-way road without a marked centerline, smooth asphalt, and very light traffic with no other vehicles visible. Two pedestrians in black pants ahead on the right walk away in the roadway because the sidewalk is crowded, taking part of the ego vehicle's lane and constraining its pace. Farther ahead on the right sidewalk, a person stands near the curb facing the road, close to the edge near the walking pair. On the left side near the curb, another pedestrian in light clothing walks away along the edge but stays out of the ego path. Tall hedges and building walls line both sides, tightening sightlines, and there are no parked cars or obstacles.", "hazard_reasoning": "There are two pedestrians wearing black pants and walking on the right side of the road, away from the ego car, because the sidewalk is full. The driver should slow down to avoid a potential collision with these pedestrians on the roadway."}
{"id": "train_07727", "split": "train", "clip_key": "2020-0213-143552_028782_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "028782"}, "frames": ["2020-0213-143552_028782_movie_t-3.jpg", "2020-0213-143552_028782_movie_t-2.jpg", "2020-0213-143552_028782_movie_t-1.jpg", "2020-0213-143552_028782_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "A narrow urban shopping street with one lane in each direction and no median is shown, the pavement smooth and traffic light. The number 30 is painted on the roadway as the ego vehicle approaches a zebra crossing. Ahead on the left side in the ego lane, a silver van is parked, reducing the available width for through traffic. At the near left curb by the crosswalk, two pedestrians wait and could step into the lane. Farther ahead near the right edge, a cyclist travels in the same direction at low speed and may interact with the ego vehicle when passing the parked van. Bicycles line the right sidewalk.", "hazard_reasoning": "There is a silver van parked on the left side of the road, in the ego lane. The parked van partially blocks the driving lane, so the driver must carefully manoeuvre to avoid a collision."}
{"id": "train_07728", "split": "train", "clip_key": "2020-0131-135401_066748_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "066748"}, "frames": ["2020-0131-135401_066748_movie_t-3.jpg", "2020-0131-135401_066748_movie_t-2.jpg", "2020-0131-135401_066748_movie_t-1.jpg", "2020-0131-135401_066748_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs straight with smooth pavement, bordered by buildings on the left and an elevated expressway on the right; a curb median on the left separates oncoming traffic, and overall same-direction flow is light. A small white van travels ahead in the ego lane at a steady pace, occupying the path and setting the following speed. A box truck ahead in the right adjacent lane moves straight and slightly faster, remaining parallel and not entering the ego lane. Farther ahead the road rises toward a bridge structure, with no active signals visible and no pedestrians or cyclists near the carriageway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07729", "split": "train", "clip_key": "titan_clip_1305_000078_movie", "source": {"subset": "titan", "scenario": "clip_1305", "frame": "000078"}, "frames": ["titan_clip_1305_000078_movie_t-3.jpg", "titan_clip_1305_000078_movie_t-2.jpg", "titan_clip_1305_000078_movie_t-1.jpg", "titan_clip_1305_000078_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow undivided lane and smooth pavement is shown, with light, slow traffic and no moving vehicles visible. Ahead in the center of the lane, a pedestrian in a white shirt and gray pants pulls a suitcase and walks away from the ego vehicle in the middle of the road, occupying the path and controlling the pace. On the right edge, a black minivan stands stopped along the curb beside shops, narrowing the usable lane near the pedestrian. Farther ahead, several other pedestrians walk along and across the roadway near storefronts on both sides, close to the ego lane.", "hazard_reasoning": "There is a pedestrian wearing gray pant and white shirt, pulling a suitcase, and walking away from the ego car in the middle of the road. The pedestrian is positioned in the travel lane and may continue walking unpredictably, so the driver should slow down to ensure enough reaction time."}
{"id": "train_07730", "split": "train", "clip_key": "2020-0207-101955_054965_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "054965"}, "frames": ["2020-0207-101955_054965_movie_t-3.jpg", "2020-0207-101955_054965_movie_t-2.jpg", "2020-0207-101955_054965_movie_t-1.jpg", "2020-0207-101955_054965_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes and a planted curb on the right has smooth pavement and heavy, slow-moving traffic. A black sedan directly ahead in the ego lane slows to a crawl because congestion stacks up further ahead, constraining the ego car. A white van slightly ahead to the left in the adjacent lane creeps forward in the queue, occupying the space that would otherwise allow a left lane change. On the right near the curb, a blue truck stands nearly stationary beside the footbridge, its position narrowing the lane as vehicles pass. Overhead blue direction signs on the pedestrian overpass indicate upcoming route choices and distances, reinforcing that the stream is approaching a junction.", "hazard_reasoning": "There is a black sedan slowing down in front of the ego-car, in the ego lane, because of traffic congestion ahead. Driver should slow down to maintain a safe distance amid the congestion."}
{"id": "train_07731", "split": "train", "clip_key": "2020-0205-152530_052532_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "052532"}, "frames": ["2020-0205-152530_052532_movie_t-3.jpg", "2020-0205-152530_052532_movie_t-2.jpg", "2020-0205-152530_052532_movie_t-1.jpg", "2020-0205-152530_052532_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with two same-direction lanes curves gently left, bounded by metal guardrails and light poles, and the pavement looks smooth; traffic flows at a moderate, steady pace with no opposing lanes visible. A silver van ahead in the ego lane drives away from the ego car, holding its lane and gradually increasing the gap. In the adjacent right lane, a flatbed truck slightly ahead continues straight at a similar speed without encroaching. Farther ahead in the right lane, a small white car proceeds in line with the flow.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car. The driver should follow the vehicle ahead to maintain a safe following distance, as it may slow or navigate the upcoming curve unexpectedly."}
{"id": "train_07732", "split": "train", "clip_key": "2020-0217-110854_035199_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "035199"}, "frames": ["2020-0217-110854_035199_movie_t-3.jpg", "2020-0217-110854_035199_movie_t-2.jpg", "2020-0217-110854_035199_movie_t-1.jpg", "2020-0217-110854_035199_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A dense urban arterial with multiple same-direction lanes has smooth pavement and heavy traffic queued at an intersection. Flow is slow to a standstill under a red signal. A silver car directly ahead in the ego lane is stopped at the red light, holding the ego vehicle as noted. To the right, a large coach bus runs parallel and also stops beside the ego lane, narrowing lateral space. On the left, a white van slightly ahead in the adjacent lane waits in the same queue. Overhead traffic lights show red for this approach.", "hazard_reasoning": "There is a silver sedan stopped in front of the ego car, because of red traffic lights. The driver should stop to avoid colliding with the halted vehicle and comply with the traffic signal."}
{"id": "train_07733", "split": "train", "clip_key": "2020-0220-102630_017740_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_017740_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_017740_movie_t-3_augB1.jpg", "2020-0220-102630_017740_movie_t-2_augB1.jpg", "2020-0220-102630_017740_movie_t-1_augB1.jpg", "2020-0220-102630_017740_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban multi-lane street carries heavy, slow traffic; the ego-vehicle proceeds in the left of two same-direction lanes on smooth asphalt with no median visible. A white sedan directly ahead in the ego lane slows and inches forward because of congestion, constraining the ego car's pace. To the right, a line of vans and small trucks creeps along the adjacent lane in parallel, leaving few openings and keeping the flow staggered. Farther ahead, a tall box truck in the same direction sits within the queue and limits the forward view. No oncoming traffic is visible in the scene.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the decelerating vehicle ahead."}
{"id": "train_07734", "split": "train", "clip_key": "2020-0226-140503_056401_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "056401"}, "frames": ["2020-0226-140503_056401_movie_t-3.jpg", "2020-0226-140503_056401_movie_t-2.jpg", "2020-0226-140503_056401_movie_t-1.jpg", "2020-0226-140503_056401_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban street with one forward lane curves gently left and climbs uphill beside a concrete viaduct, with a shrub-lined median on the left and a red paved shoulder on the right; the pavement appears dry and traffic is light. Far ahead in the ego lane, a white box truck proceeds uphill at a steady pace, setting the speed. Along the right curb, a row of parked cars occupies the red shoulder and narrows the usable lane. Mid-right, two pedestrians stand and then walk beside the parked cars near the edge, where they may enter the ego lane.", "hazard_reasoning": "There are no pedestrians, cyclists, or unexpected obstacles present, and traffic is flowing smoothly, so no immediate hazards are detected requiring a driver warning."}
{"id": "train_07735", "split": "train", "clip_key": "2020-0214-145407_036102_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "036102"}, "frames": ["2020-0214-145407_036102_movie_t-3.jpg", "2020-0214-145407_036102_movie_t-2.jpg", "2020-0214-145407_036102_movie_t-1.jpg", "2020-0214-145407_036102_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes runs beneath elevated structures, with a guardrail on the left and a striped buffer marked by flexible posts on the right; the pavement is smooth and traffic becomes slow-moving. A white box truck directly ahead in the ego lane slows in a growing queue, constraining the ego car's speed. In the adjacent left lane ahead-left, several cars also decelerate and travel parallel, leaving little gap for lane changes. Farther ahead the line of vehicles continues under the overpass, indicating ongoing congestion; no pedestrians or cyclists are visible.", "hazard_reasoning": "A white truck is slowing in front of the ego car in the ego lane, because of traffic congestion. The truck's reduced speed indicates congestion ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_07736", "split": "train", "clip_key": "2020-0206-101736_014002_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "014002"}, "frames": ["2020-0206-101736_014002_movie_t-3.jpg", "2020-0206-101736_014002_movie_t-2.jpg", "2020-0206-101736_014002_movie_t-1.jpg", "2020-0206-101736_014002_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban two-way street with one narrow lane per direction runs between close-set buildings; there is no median, the pavement looks smooth, and traffic is very light with no moving vehicles visible. Ahead in the left lane, a white truck is parked along the curb in front of the ego car, occupying part of the lane and narrowing the passage. On the right, a man walks toward the camera along the curb at the edge of the roadway, close to the ego lane so he may enter it. Farther ahead near the centerline, another pedestrian moves rightward across the road but remains distant. Shop signs and crates on the right encroach slightly into the shoulder.", "hazard_reasoning": "There is a white truck parked on the left side of the road, in front of the ego car, because there is no parking spot. This parked truck partially obstructs the sidewalk view, so manoeuvre carefully around it to maintain visibility of pedestrians."}
{"id": "train_07737", "split": "train", "clip_key": "2020-0205-103411_047238_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "047238"}, "frames": ["2020-0205-103411_047238_movie_t-3.jpg", "2020-0205-103411_047238_movie_t-2.jpg", "2020-0205-103411_047238_movie_t-1.jpg", "2020-0205-103411_047238_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the sedan changing lanes", "environment_perception": "An urban three-lane arterial runs between high-rise buildings, with smooth pavement and a narrow post-lined median separating oncoming lanes to the right; traffic is moderate and moving steadily. Ahead in the ego lane, a black sedan changes from the ego lane to the left lane, crossing the lane line and momentarily limiting the gap ahead. A silver sedan in the left lane just ahead continues straight, occupying the space the black car merges into and staying close to the ego vehicle's front. Cars in the right adjacent lane proceed at a similar speed, while oncoming traffic beyond the median flows smoothly.", "hazard_reasoning": "There is a black sedan lane changing from the ego lane to the left lane. The sedan is moving into the left lane and could enter your path, so you should be aware of its maneuver."}
{"id": "train_07738", "split": "train", "clip_key": "2020-0225-145150_000199_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "000199"}, "frames": ["2020-0225-145150_000199_movie_t-3.jpg", "2020-0225-145150_000199_movie_t-2.jpg", "2020-0225-145150_000199_movie_t-1.jpg", "2020-0225-145150_000199_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street with a single lane in each direction has smooth pavement and no median, and traffic is light as the scene approaches a signalized intersection and crosswalk. A white van ahead in the ego lane drives away from the camera, then slows and turns left at the intersection, briefly dictating the ego vehicle's pace as it clears the lane. Several pedestrians wait on both sidewalks near the zebra crossing, some close to the curb and potentially about to cross. An oncoming car is visible farther ahead in the opposite lane continuing straight without interaction. Guardrails and parked bicycles line the right edge, narrowing the roadside space.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car and turning left. This left turn may bring the van into the ego-vehicle's path, so the driver should carefully manoeuvre to maintain a safe distance."}
{"id": "train_07739", "split": "train", "clip_key": "2020-0220-151845_028516_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "028516"}, "frames": ["2020-0220-151845_028516_movie_t-3.jpg", "2020-0220-151845_028516_movie_t-2.jpg", "2020-0220-151845_028516_movie_t-1.jpg", "2020-0220-151845_028516_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, pavement is in good condition, and traffic is heavy, transitioning from a stop to a slow crawl. A white hatchback directly ahead in the ego lane starts to roll and then eases forward as a green traffic light releases the queue, setting the ego car's pace. Farther ahead in the same lane a beige box truck pulls away with the platoon and remains a bottleneck. In the adjacent right lane a dark minivan moves forward in parallel, occasionally edging ahead but not merging. No unusual hazards or obstructions are visible.", "hazard_reasoning": "There is a white sedan starting to move in the ego lane, because there is a green traffic light, in front of the ego car. The driver should start moving promptly to follow the green light and maintain safe traffic flow."}
{"id": "train_07740", "split": "train", "clip_key": "2020-0225-102455_001872_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "001872"}, "frames": ["2020-0225-102455_001872_movie_t-3.jpg", "2020-0225-102455_001872_movie_t-2.jpg", "2020-0225-102455_001872_movie_t-1.jpg", "2020-0225-102455_001872_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "In an urban arterial, the ego-car travels in the left lane of a two-way road divided by double white lines; the pavement is dry and smooth, and traffic is moderate but gradually slows ahead. A white van directly ahead in the ego lane reduces speed because of congestion further up the road, constraining the ego vehicle's pace. At the near left crosswalk, a pedestrian steps across the main road from left to right, moving toward the lane area and potentially entering the ego path. Along the right edge, a bicyclist rides forward in the same direction near the curb, parallel to the ego path. Oncoming traffic flows in the right-side lanes without affecting the scene.", "hazard_reasoning": "There is a white van slowing down in front of the ego-car, because of traffic congestion ahead. The front vehicle's reduced speed indicates a buildup of traffic ahead, requiring the driver to slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_07741", "split": "train", "clip_key": "titan_clip_287_000558_movie", "source": {"subset": "titan", "scenario": "clip_287", "frame": "000558"}, "frames": ["titan_clip_287_000558_movie_t-3.jpg", "titan_clip_287_000558_movie_t-2.jpg", "titan_clip_287_000558_movie_t-1.jpg", "titan_clip_287_000558_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian ahead", "environment_perception": "An urban commercial street with a narrow unmarked lane and a zebra crosswalk in the foreground is visible; the pavement looks smooth and there is no vehicle traffic, so overall flow is light. On the right side near the crosswalk, a pedestrian wearing a white shirt walks toward the ego car along the edge of the lane and may enter its path. Farther ahead in the center of the lane, another pedestrian walks away from the camera within the roadway, which constrains speed. At the left curb, a person holding a white umbrella waits by the crosswalk and could begin crossing. A blue pedestrian crossing sign stands on the left, matching the marked crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the right side of the road, towards the ego car. The pedestrian's proximity to the crosswalk means they could enter the vehicle's path, so the driver should be cautious to prevent a collision."}
{"id": "train_07742", "split": "train", "clip_key": "titan_clip_1023_000024_movie", "source": {"subset": "titan", "scenario": "clip_1023", "frame": "000024"}, "frames": ["titan_clip_1023_000024_movie_t-3.jpg", "titan_clip_1023_000024_movie_t-2.jpg", "titan_clip_1023_000024_movie_t-1.jpg", "titan_clip_1023_000024_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian walking ahead", "environment_perception": "An urban residential alley in Japan with a single narrow two-way lane runs straight between buildings, with smooth asphalt and no median; traffic is light with no moving vehicles. Far ahead to the right of the lane, a pedestrian wearing black walks near the middle of the road and could enter the ego vehicle's path. The right side features a recessed driveway with bollards and a parked bicycle, while a walled garden lines the left, creating tight clearances along the corridor.", "hazard_reasoning": "There is a pedestrian wearing a black dress and walking in the middle of road, to the right side. The pedestrian's position in the lane poses a collision risk, so the driver should be aware and prepared to react."}
{"id": "train_07743", "split": "train", "clip_key": "titan_clip_602_000060_movie", "source": {"subset": "titan", "scenario": "clip_602", "frame": "000060"}, "frames": ["titan_clip_602_000060_movie_t-3.jpg", "titan_clip_602_000060_movie_t-2.jpg", "titan_clip_602_000060_movie_t-1.jpg", "titan_clip_602_000060_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street without a centerline runs between shops, the pavement smooth and edges partly narrowed by cones and temporary barriers; traffic is light with no moving vehicles. Ahead in the center of the lane, a pedestrian in a black shirt walks away from the ego car in the middle of the road, occupying the travel path and constraining pace. Farther ahead near the right curb, a person stands beside a bicycle and stays stationary close to the edge of the lane. A yellow school-zone warning sign appears on the left, and a roadside convex mirror is mounted on a pole at the right corner.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, walking in the middle of the road, away from the ego car. Because the pedestrian occupies the travel lane, the driver should slow down to maintain a safe distance and prevent a collision under this situation."}
{"id": "train_07744", "split": "train", "clip_key": "2020-0214-145407_036161_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "036161"}, "frames": ["2020-0214-145407_036161_movie_t-3.jpg", "2020-0214-145407_036161_movie_t-2.jpg", "2020-0214-145407_036161_movie_t-1.jpg", "2020-0214-145407_036161_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down and maintain a safe distance", "environment_perception": "An urban arterial runs between tall buildings and an elevated structure, with two same-direction lanes and a short merge lane on the right. The pavement is smooth and dry, and traffic is moderate, bunching ahead. A white box truck directly ahead in the ego lane slows because congestion forms in front, limiting the ego car's speed. To the left, several cars proceed steadily in the adjacent lane, moving past the truck while staying in lane. On the right at the gore-marked merge, a black sedan waits near the bollards and may enter the main lanes.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Slow down and maintain a safe distance to adapt to the congested traffic."}
{"id": "train_07745", "split": "train", "clip_key": "titan_clip_595_000354_movie", "source": {"subset": "titan", "scenario": "clip_595", "frame": "000354"}, "frames": ["titan_clip_595_000354_movie_t-3.jpg", "titan_clip_595_000354_movie_t-2.jpg", "titan_clip_595_000354_movie_t-1.jpg", "titan_clip_595_000354_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "An urban alley-like street in Japan with a single narrow lane and no median appears, the pavement smooth and traffic light. On the left edge ahead, a pedestrian in black pants and a gray shirt walks toward the ego car along the roadway and may enter the lane. At the right edge very near, another pedestrian walks along the curb, close to the travel path. Far ahead in the same lane, a small white car moves away down the street. A no-parking sign is posted on a pole at the left. Rows of parked bicycles line the left curb, and orange cones by a building on the right mark a confined work area.", "hazard_reasoning": "There's a pedestrian wearing black pants, wearing a gray shirt, walking on the left side of the road toward the ego car. The driver should be cautious because the pedestrian may cross into the roadway ahead, requiring a timely response."}
{"id": "train_07746", "split": "train", "clip_key": "titan_clip_1142_000222_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1142_000222_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1142_000222_movie_t-3_augB1.jpg", "titan_clip_1142_000222_movie_t-2_augB1.jpg", "titan_clip_1142_000222_movie_t-1_augB1.jpg", "titan_clip_1142_000222_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrians.", "environment_perception": "A dense urban commercial street appears with a narrow two-way carriageway, no median, and slightly worn but intact pavement; traffic is light with no moving vehicles near the ego car. Ahead on the left edge, two pedestrians walk away along the roadway because there is no sidewalk; one wears a white T-shirt and black pants and tows a suitcase while the other wears a black shirt and orange skirt, and together they occupy part of the ego lane. On the right edge mid-block, another pedestrian moves toward the camera near storefronts and cones but stays at the curb. Bicycles and shop displays line the left margin, reducing the usable width of the lane.", "hazard_reasoning": "There are two pedestrians, one wearing a white t-shirt and black pants who is towing a suitcase, and the other is wearing a black shirt and orange skirt, walking on the left side of the road away from the ego car because there is no sidewalk. The driver needs to manoeuvre carefully around these pedestrians to prevent a potential collision as they share the roadway."}
{"id": "train_07747", "split": "train", "clip_key": "titan_clip_775_000132_movie", "source": {"subset": "titan", "scenario": "clip_775", "frame": "000132"}, "frames": ["titan_clip_775_000132_movie_t-3.jpg", "titan_clip_775_000132_movie_t-2.jpg", "titan_clip_775_000132_movie_t-1.jpg", "titan_clip_775_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street with shops lines both sides, appearing two-way without a centerline; the pavement is smooth and traffic is light. A small blue van ahead in the ego lane proceeds straight at low speed, effectively setting the pace. An oncoming car approaches near the middle of the road in the opposite direction and passes by while remaining clear of the ego lane. On the left edge of the ego lane, a man wearing white trousers, a T-shirt, shoes, and a shoulder bag walks along the lane and may encroach into the path. Storefront banners, sandwich boards, and parked bicycles crowd the curbs, slightly reducing lateral clearance.", "hazard_reasoning": "There is a man wearing a pair of white trousers, a T-shirt, shoes, hanging a handbag on his shoulders, walking on the left side of the ego lane. The pedestrian may step into the driving lane unexpectedly and is partially obscured by the cart, so the driver should manoeuvre carefully around the pedestrian to maintain a safe distance."}
{"id": "train_07748", "split": "train", "clip_key": "2020-0204-150838_004853_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_004853_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_004853_movie_t-3_augB1.jpg", "2020-0204-150838_004853_movie_t-2_augB1.jpg", "2020-0204-150838_004853_movie_t-1_augB1.jpg", "2020-0204-150838_004853_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with dry asphalt and no physical median carries heavy, slow traffic toward a signalized intersection ahead. A black sedan directly ahead in the ego lane slows due to congestion and constrains the ego car's pace. Slightly ahead to the left, a large box truck creeps in the curbside lane alongside the ego lane, leaving little space to pass on that side. In the adjacent right lane, a black minivan a short distance ahead also slows with the queue, limiting options to merge right.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to adapt to the congestion and maintain a safe following distance."}
{"id": "train_07749", "split": "train", "clip_key": "2020-0217-110854_070283_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "070283"}, "frames": ["2020-0217-110854_070283_movie_t-3.jpg", "2020-0217-110854_070283_movie_t-2.jpg", "2020-0217-110854_070283_movie_t-1.jpg", "2020-0217-110854_070283_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with multiple lanes and a painted hatch buffer has light to moderate flow on dry pavement, with the ego vehicle traveling in the left lane and oncoming traffic using the right-side lanes. A white lorry truck directly ahead in the ego lane slows because there is traffic congestion ahead, which sets the ego vehicle's pace. To the right, a white sedan slightly ahead continues straight in the adjacent same-direction lane at a steady speed. Farther ahead, several cars approach in the opposite direction beyond the buffer. Parked yellow vans line the left curb outside the travel lane.", "hazard_reasoning": "A white lorry truck is slowing down in the ego lane, because there is traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision due to the congested traffic ahead."}
{"id": "train_07750", "split": "train", "clip_key": "2020-0228-150133_049421_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "049421"}, "frames": ["2020-0228-150133_049421_movie_t-3.jpg", "2020-0228-150133_049421_movie_t-2.jpg", "2020-0228-150133_049421_movie_t-1.jpg", "2020-0228-150133_049421_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid rear-end collision", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with a right-side guardrail and smooth pavement; traffic is heavy and mostly stopped. A gray sedan is directly ahead in the ego lane and remains stopped because congestion blocks the way forward. In the lane to the left, a black sedan runs slightly ahead and inches forward alongside, limiting lateral space. Farther ahead in that neighboring lane, a white van creeps with the queue, constraining overall pace. A line of trucks and cars is visible in the distance, forming the tail of the jam. A merge-left arrow is painted in the ego lane near the car ahead.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Stop immediately to avoid rear-end collision due to reduced stopping distance in slow traffic."}
{"id": "train_07751", "split": "train", "clip_key": "titan_clip_1218_000516_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1218_000516_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1218_000516_movie_t-3_augB1.jpg", "titan_clip_1218_000516_movie_t-2_augB1.jpg", "titan_clip_1218_000516_movie_t-1_augB1.jpg", "titan_clip_1218_000516_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for pedestrian in travel lane", "environment_perception": "A narrow urban shopping street with a single shared lane and no marked centerline runs between buildings; pavement looks smooth and traffic is light but space is tight. Ahead in the ego lane, a pedestrian in a blue shirt and blue pants carrying handbags walks away from the car within the roadway because there is no sidewalk, remaining in the vehicle's path. Slightly right of center, a cyclist rides away in the same lane, potentially constraining speed. Near the left edge farther ahead, another pedestrian in a white shirt also walks away within the lane. A 30 speed-limit sign is visible ahead. A small flatbed truck is stopped along the left side, intruding into the lane and narrowing the passage.", "hazard_reasoning": "There's a pedestrian wearing a blue shirt and blue pants, carrying handbags, walking in the ego lane, away from the ego car, because the lane is narrow and there is no sidewalk. The driver should stop for the pedestrian who is forced into the travel lane to avoid a collision."}
{"id": "train_07752", "split": "train", "clip_key": "titan_clip_1029_000384_movie", "source": {"subset": "titan", "scenario": "clip_1029", "frame": "000384"}, "frames": ["titan_clip_1029_000384_movie_t-3.jpg", "titan_clip_1029_000384_movie_t-2.jpg", "titan_clip_1029_000384_movie_t-1.jpg", "titan_clip_1029_000384_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban commercial street with a single shared lane and block-paved surface has light vehicle flow while the ego car proceeds slowly past curbside activity. Ahead in the middle of the lane, two pedestrians in white shirts walk toward the ego vehicle at a steady pace, occupying the travel path and constraining speed. On the right side, a pedestrian wearing a blue shirt and blue pants walks toward the ego car, having stepped into the roadway to get around a parked van. At the open rear of that right-side van, another person unloads items with a cart and stands at the edge of the lane, further narrowing the passage. Bicycles are parked along the right.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and blue pants, walking on the right side of the road, towards the ego car, because of the packed vehicle. The pedestrian may step into the driving path to avoid the parked van, so the driver should manoeuvre carefully to prevent collision."}
{"id": "train_07753", "split": "train", "clip_key": "2020-0217-144444_005122_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "005122"}, "frames": ["2020-0217-144444_005122_movie_t-3.jpg", "2020-0217-144444_005122_movie_t-2.jpg", "2020-0217-144444_005122_movie_t-1.jpg", "2020-0217-144444_005122_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial with a left-side sidewalk and guardrail has dry pavement, and traffic is heavy and queued toward an intersection. A yellow sedan directly ahead in the ego lane is stopped for the traffic light ahead and blocks our path. To the right, a black boxy van in the adjacent lane inches forward in the same queue, limiting any chance to merge. Farther ahead, several cars and a white truck line up with brake lights on, keeping the overall pace slow.", "hazard_reasoning": "There is a yellow sedan stopped in the ego lane, because of the red traffic light ahead. The driver must stop to avoid a collision with the stationary vehicle at the red light."}
{"id": "train_07754", "split": "train", "clip_key": "titan_clip_358_000186_movie", "source": {"subset": "titan", "scenario": "clip_358", "frame": "000186"}, "frames": ["titan_clip_358_000186_movie_t-3.jpg", "titan_clip_358_000186_movie_t-2.jpg", "titan_clip_358_000186_movie_t-1.jpg", "titan_clip_358_000186_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian waiting to cross", "environment_perception": "A narrow urban shopping street with no center line and block-paved surface leads to a small intersection ahead, and traffic is light. A pedestrian in a white shirt carrying a handbag waits at the right side of the intersection to cross and may enter the ego lane. Two other pedestrians near the right corner start crossing left across the vehicle's path, constraining speed. A cyclist along the left curb rolls forward in the same direction and may merge into the lane. A white van is stopped at the curb on the right, slightly narrowing the way. A traffic signal visible down the street shows red.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and waiting to cross on the right side of the intersection. The pedestrian may step into the roadway unexpectedly, so the driver should yield to allow safe crossing."}
{"id": "train_07755", "split": "train", "clip_key": "2020-0129-144857_021615_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "021615"}, "frames": ["2020-0129-144857_021615_movie_t-3.jpg", "2020-0129-144857_021615_movie_t-2.jpg", "2020-0129-144857_021615_movie_t-1.jpg", "2020-0129-144857_021615_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging vehicle ahead", "environment_perception": "An urban arterial under an elevated roadway carries two lanes in the ego direction, bordered by a painted gore and fence on the right; the pavement is dry and traffic is moderate with brief slowing. Far ahead in the ego lane, a black sedan slows because a vehicle in front of it is merging into the ego lane, which temporarily checks the flow. From the right slip road, a white van merges ahead of the black sedan and into the ego lane, directly affecting the ego vehicle's pace. In the adjacent left lane, a silver hatchback continues straight at steady speed slightly ahead, limiting an immediate lane change. Chevron boards at the gore highlight the merge area.", "hazard_reasoning": "There is a black sedan slowing down in the ego lane, because a vehicle in front of it, is merging into the ego lane. The merging vehicle may force sudden speed adjustments, so the driver should be aware of potential changes in traffic flow."}
{"id": "train_07756", "split": "train", "clip_key": "2020-0205-103411_004987_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "004987"}, "frames": ["2020-0205-103411_004987_movie_t-3.jpg", "2020-0205-103411_004987_movie_t-2.jpg", "2020-0205-103411_004987_movie_t-1.jpg", "2020-0205-103411_004987_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban, signalized intersection with wide two-way streets and clean pavement is ahead, and vehicle traffic is light while the pedestrian phase dominates. A group of pedestrians, including people in a red coat and a black coat with black pants and a handbag, cross the marked crosswalk in the ego lane from left to right, moving through the vehicle's path and holding its position. Additional pedestrians stream across ahead from both sides toward the center, steadily entering the zebra markings and continuing to occupy the lane the ego would take. A white car at the far left waits before the crosswalk and does not enter the intersection. Overhead traffic signals and prominent zebra crosswalks are visible.", "hazard_reasoning": "There is a group of pedestrians, wearing a red coat, a black coat, black pants, and carrying a handbag, crossing the street at the crosswalk towards the right side of the road, in the ego lane. The pedestrians are entering the ego lane at a crosswalk while the light for vehicles is red, so the driver must stop to prevent a collision."}
{"id": "train_07757", "split": "train", "clip_key": "2020-0204-150838_076351_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "076351"}, "frames": ["2020-0204-150838_076351_movie_t-3.jpg", "2020-0204-150838_076351_movie_t-2.jpg", "2020-0204-150838_076351_movie_t-1.jpg", "2020-0204-150838_076351_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway with multiple same-direction lanes runs beside an elevated structure, divided by a concrete median on the left and a guardrail with a coned-off shoulder on the right; the pavement is dry and traffic flows steadily. A black covered cargo truck is directly ahead in the ego lane and pulls away from the camera, matching the lack of congestion ahead. A white box truck travels just ahead to the left in the adjacent lane at a similar pace, remaining roughly parallel to the ego vehicle. A small white car continues ahead to the right near the cones, keeping its lane without drifting toward the ego path. Bright construction cones and a narrowed right shoulder are the most notable roadside features.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07758", "split": "train", "clip_key": "2020-0203-114632_019049_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "019049"}, "frames": ["2020-0203-114632_019049_movie_t-3.jpg", "2020-0203-114632_019049_movie_t-2.jpg", "2020-0203-114632_019049_movie_t-1.jpg", "2020-0203-114632_019049_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban signalized four-way intersection on an undivided two-way road has clean pavement and moderate cross traffic; the ego?ehicle waits in the left lane at a red light. On the left edge near the stop line, a cyclist in a dark jacket with a backpack stands astride a bicycle, waiting because the signal is red and likely to proceed when it changes. Ahead across the zebra, several pedestrians walk rightward in front of the ego lane, continuing while vehicles are stopped. In the intersection, a black taxi and a white car travel across from right to left on the cross street, passing through before the ego can move. A roadside sign points to Waseda-ori Ave with route 25 indicated.", "hazard_reasoning": "There is a cyclist wearing a black jacket, carrying a backpack, standing on the left side of the road, because of the red traffic light ahead. The cyclist may cross the intersection once the signal changes, so stop to avoid a collision."}
{"id": "train_07759", "split": "train", "clip_key": "titan_clip_1165_000570_movie", "source": {"subset": "titan", "scenario": "clip_1165", "frame": "000570"}, "frames": ["titan_clip_1165_000570_movie_t-3.jpg", "titan_clip_1165_000570_movie_t-2.jpg", "titan_clip_1165_000570_movie_t-1.jpg", "titan_clip_1165_000570_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with no median runs between rows of parked vehicles on both curbs; the pavement looks smooth and moving traffic is light. The ego vehicle travels along the left side. Ahead, a pedestrian in a white shirt and skirt walks across to the right side of the road in front of the car, entering the ego path. Farther ahead in the same direction, a white car moves slowly down the center, modestly constraining the pace. Numerous parked vans and cars line both sides, tightening the lane and limiting sight lines near the crossing.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and a skirt, walking across to the right side of the road in front of the ego car. The pedestrian's movement into the vehicle's path requires the driver to reduce speed to avoid a possible collision, aligning with the need to slow down."}
{"id": "train_07760", "split": "train", "clip_key": "titan_clip_617_000042_movie", "source": {"subset": "titan", "scenario": "clip_617", "frame": "000042"}, "frames": ["titan_clip_617_000042_movie_t-3.jpg", "titan_clip_617_000042_movie_t-2.jpg", "titan_clip_617_000042_movie_t-1.jpg", "titan_clip_617_000042_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "manoeuvre around the pedestrian", "environment_perception": "An urban narrow local street with a single undivided lane runs between shops, the pavement smooth and traffic light with no moving cars. On the right edge near the ego vehicle, a pedestrian wearing blue pants and a gray shirt walks toward the camera along the roadway, close to the lane and directly in the path. Farther ahead on the right, another pedestrian stands at the curb near a shuttered storefront, facing the street and remaining stationary. A blue sign with a left arrow hangs from a building. Parked bicycles and storefront fixtures line the right margin, reducing lateral clearance.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a gray shirt, walking on the right side of the road, toward the ego car. The pedestrian may step into the vehicle's path, so the driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_07761", "split": "train", "clip_key": "titan_clip_316_000126_movie", "source": {"subset": "titan", "scenario": "clip_316", "frame": "000126"}, "frames": ["titan_clip_316_000126_movie_t-3.jpg", "titan_clip_316_000126_movie_t-2.jpg", "titan_clip_316_000126_movie_t-1.jpg", "titan_clip_316_000126_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian in the road", "environment_perception": "A narrow urban street with block paving and no center divider runs between tall storefronts and a parking entrance, and traffic is light with slow movement. Ahead in the ego lane, a white car creeps forward and briefly pauses, setting the pace for the ego vehicle. Farther ahead, a pedestrian in a black dress walks away from the camera in the middle of the roadway, occupying the ego path and influencing the white car's speed. Along the right edge near a parking sign and orange cones, another pedestrian walks in the same direction close to the curb without entering the lane. Cones, a parked bicycle, and a ramp at the parking entrance narrow the usable roadway but no signals or unusual signs are prominent.", "hazard_reasoning": "There is a pedestrian wearing a black dress, walking in the middle of the road, away from the ego car, because of the parked vehicle. The pedestrian's position in the roadway increases collision risk, requiring the driver to yield to avoid an accident."}
{"id": "train_07762", "split": "train", "clip_key": "titan_clip_1254_000126_movie", "source": {"subset": "titan", "scenario": "clip_1254", "frame": "000126"}, "frames": ["titan_clip_1254_000126_movie_t-3.jpg", "titan_clip_1254_000126_movie_t-2.jpg", "titan_clip_1254_000126_movie_t-1.jpg", "titan_clip_1254_000126_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the white minivan", "environment_perception": "An urban two-way street with one narrow lane each way runs between mid-rise buildings, with smooth pavement and light moving traffic but reduced width due to curbside parking. On the left near the ego vehicle, a white minivan is parked in the ego lane, blocking part of the lane and narrowing the path. Ahead on the right, a blue cement mixer truck stands by the curb partly occupying the oncoming lane, creating a pinch point opposite the parked cars. Farther ahead, an oncoming white van travels toward the camera through this gap, relevant as it passes opposite the obstruction.", "hazard_reasoning": "There is a white minivan parked on the left side of the road, in the ego lane. The stationary vehicle blocks the travel lane, so drivers should carefully manoeuvre around it to avoid a collision."}
{"id": "train_07763", "split": "train", "clip_key": "2020-0206-101736_022313_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "022313"}, "frames": ["2020-0206-101736_022313_movie_t-3.jpg", "2020-0206-101736_022313_movie_t-2.jpg", "2020-0206-101736_022313_movie_t-1.jpg", "2020-0206-101736_022313_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way road with smooth pavement runs beneath a pedestrian footbridge ahead, and the ego car travels in the leftmost lane of its direction. Red flexible posts and hatch markings create a buffer to the right, with the opposing lanes farther right; overall traffic is light. A black SUV directly ahead in the ego lane moves to the right lane, briefly constraining the ego vehicle's pace before clearing its path. The oncoming side is mostly empty, and no pedestrians or cyclists are visible.", "hazard_reasoning": "There is a black SUV lane changing, in the ego lane, to the right lane. The sudden lane change could bring the vehicle into your path, so you should slow down to maintain a safe distance."}
{"id": "train_07764", "split": "train", "clip_key": "2020-0204-103442_095302_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "095302"}, "frames": ["2020-0204-103442_095302_movie_t-3.jpg", "2020-0204-103442_095302_movie_t-2.jpg", "2020-0204-103442_095302_movie_t-1.jpg", "2020-0204-103442_095302_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road is shown, with the ego vehicle in the left-side through lane; pavement is dry and intact, and traffic is light to moderate as a queue near a signalized intersection begins to roll. A white van directly ahead in the ego lane accelerates as traffic begins to move forward, momentarily setting the ego vehicle's pace. Farther ahead, a small yellow hatchback proceeds through the junction in the same path, opening space for the van. To the right, a side lane branches off past a painted gore and narrow median and remains clear, posing no interaction. Overhead traffic lights hang at the intersection ahead and appear to govern the recent release of traffic.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07765", "split": "train", "clip_key": "2020-0203-154554_040904_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "040904"}, "frames": ["2020-0203-154554_040904_movie_t-3.jpg", "2020-0203-154554_040904_movie_t-2.jpg", "2020-0203-154554_040904_movie_t-1.jpg", "2020-0203-154554_040904_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene unfolds on a single-lane roadway running under an elevated structure, bounded by guardrails and a noise barrier; the pavement looks smooth, and flow in this lane is light while the adjacent left-side lanes are heavy and slow. A white box truck directly ahead in the ego lane moves forward steadily and sets the ego vehicle's pace because traffic is flowing. Farther ahead in the same lane, a dark minivan continues straight at a similar speed. To the left, multiple cars and taxis in the same direction crawl in congestion behind the barrier, with no interaction with the ego lane. An overhead green direction sign is visible as the road bends slightly right along the barrier.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07766", "split": "train", "clip_key": "titan_clip_48_000066_movie", "source": {"subset": "titan", "scenario": "clip_48", "frame": "000066"}, "frames": ["titan_clip_48_000066_movie_t-3.jpg", "titan_clip_48_000066_movie_t-2.jpg", "titan_clip_48_000066_movie_t-1.jpg", "titan_clip_48_000066_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban two-way street with one lane each direction lacks a median and is lined with bollards and sidewalks; the pavement is smooth and traffic is light with no oncoming vehicles nearby. A pedestrian in a black shirt walks toward the ego along the right edge of the roadway, close to the curb, and may step into the lane. Slightly ahead, another pedestrian on the right steps into the road and moves diagonally left, potentially crossing the ego path. A 24h parking sign on the left points to parking 100 m ahead. A dark car stands at the right curb near a building entrance, reducing clearance.", "hazard_reasoning": "A pedestrian wearing a black shirt is walking on the right side of the road, toward the ego car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should be aware to adjust speed and avoid a collision."}
{"id": "train_07767", "split": "train", "clip_key": "2020-0225-145150_039023_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "039023"}, "frames": ["2020-0225-145150_039023_movie_t-3.jpg", "2020-0225-145150_039023_movie_t-2.jpg", "2020-0225-145150_039023_movie_t-1.jpg", "2020-0225-145150_039023_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial in Japan with two lanes in the ego direction runs between mid-rise buildings, separated from oncoming traffic by a chain-link fenced median; the pavement is smooth and traffic is moderate, tightening ahead. A blue truck directly ahead in the ego lane slows as a queue forms farther up the road, setting the ego vehicle's pace. In the adjacent left lane, a covered light truck travels slightly ahead at a steady speed, running parallel and limiting room for a lane change. Farther ahead, several cars in both lanes brake and bunch near overhead signage.", "hazard_reasoning": "There is a blue truck slowing down in the ego lane, because of traffic congestion ahead. Driver should slow down to maintain a safe distance and anticipate reduced speed due to congestion."}
{"id": "train_07768", "split": "train", "clip_key": "2020-0228-150133_015079_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "015079"}, "frames": ["2020-0228-150133_015079_movie_t-3.jpg", "2020-0228-150133_015079_movie_t-2.jpg", "2020-0228-150133_015079_movie_t-1.jpg", "2020-0228-150133_015079_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with no median, one narrow lane per direction, runs past apartment blocks; the pavement is clean and dry, and overall traffic appears light, but the ego lane is momentarily blocked. A gray van directly ahead in the ego lane is stopped, queuing because of congestion ahead and holding the ego car. A large box truck is parked tight along the left edge beside the building, encroaching on the lane and reducing clearance. On the right sidewalk near the zebra crossing, a person walking a bicycle moves along the fence and stays off the roadway. A zebra crossing spans the road ahead.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a collision with the halted vehicle."}
{"id": "train_07769", "split": "train", "clip_key": "titan_clip_657_000330_movie", "source": {"subset": "titan", "scenario": "clip_657", "frame": "000330"}, "frames": ["titan_clip_657_000330_movie_t-3.jpg", "titan_clip_657_000330_movie_t-2.jpg", "titan_clip_657_000330_movie_t-1.jpg", "titan_clip_657_000330_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "An urban narrow two-way street with smooth pavement and light traffic runs between low-rise buildings. A tall man ahead slightly right, wearing a brown T-shirt and black pants, walks in the middle of the road beside a stopped truck, leaving limited space for the ego vehicle and potentially entering its path. Farther ahead another pedestrian walks along the center of the roadway away from the ego vehicle, remaining in the likely path. A large box truck is parked at the right curb near the camera, encroaching on the lane and prompting the nearer man to walk in the road. A 30 speed limit sign and a no-parking sign are visible on the left, and an orange traffic cone sits on the left sidewalk.", "hazard_reasoning": "There is a tall man, wearing a brown t-shirt and black pants, walking in the middle of the road, toward the ego car, because of the parked vehicle. The pedestrian's position in the travel lane due to the obstructing truck creates a risk of collision, so the driver should manoeuvre carefully around them."}
{"id": "train_07770", "split": "train", "clip_key": "2020-0207-101955_018009_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "018009"}, "frames": ["2020-0207-101955_018009_movie_t-3.jpg", "2020-0207-101955_018009_movie_t-2.jpg", "2020-0207-101955_018009_movie_t-1.jpg", "2020-0207-101955_018009_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with at least two lanes per direction and a painted divider runs straight on smooth pavement, and traffic appears moderate. A small covered truck directly ahead in the ego lane slows and sets the pace, aligning with the note about a slowing truck. To the right, a white van in the adjacent same-direction lane proceeds slightly ahead at a steady speed without drifting toward the ego lane. On the left shoulder just ahead, two delivery trucks are parked beside the curb-one a large box truck with its rear ramp open-forming a roadside obstruction near the buildings.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane. The ego-vehicle must decelerate to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_07771", "split": "train", "clip_key": "titan_clip_157_000774_movie", "source": {"subset": "titan", "scenario": "clip_157", "frame": "000774"}, "frames": ["titan_clip_157_000774_movie_t-3.jpg", "titan_clip_157_000774_movie_t-2.jpg", "titan_clip_157_000774_movie_t-1.jpg", "titan_clip_157_000774_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "A narrow urban two-way street with one lane per direction and no median extends ahead on worn, dry asphalt; traffic is light, with several vehicles parked along the left curb. On the right edge by the buildings, a pedestrian in a white sweater carrying an umbrella walks away from the camera along the curb line, close to the roadway and near the ego lane. Ahead on the left, a black van is stopped or parked partly in the ego lane, reducing the available width. Additional parked cars line the left side. A no-parking sign is posted on a pole at the left curb.", "hazard_reasoning": "There is a pedestrian wearing a white sweater, carrying an umbrella, walking on the right side of the road, away from the ego car. Because the pedestrian is near the travel lane, the driver should manoeuvre carefully around them to prevent a potential collision."}
{"id": "train_07772", "split": "train", "clip_key": "2020-0214-145407_031523_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "031523"}, "frames": ["2020-0214-145407_031523_movie_t-3.jpg", "2020-0214-145407_031523_movie_t-2.jpg", "2020-0214-145407_031523_movie_t-1.jpg", "2020-0214-145407_031523_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs beneath an elevated structure, with a chevron-marked gore separating a right-side lane; the pavement looks good and traffic is slow with heavy queues ahead. A black sedan directly in front in the ego lane slows because of congestion and sets the ego vehicle's pace. Slightly ahead to the left, a small black van in the adjacent lane creeps forward parallel to the ego car while staying in its lane. On the right, a dark car moves along the parallel lane beyond the chevrons and advances slowly with the queue. On the left sidewalk near a bus stop, several pedestrians wait and remain off the roadway.", "hazard_reasoning": "There is a black sedan slowing down in front of the ego-car, in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a collision under congested conditions."}
{"id": "train_07773", "split": "train", "clip_key": "titan_clip_17_000234_movie", "source": {"subset": "titan", "scenario": "clip_17", "frame": "000234"}, "frames": ["titan_clip_17_000234_movie_t-3.jpg", "titan_clip_17_000234_movie_t-2.jpg", "titan_clip_17_000234_movie_t-1.jpg", "titan_clip_17_000234_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around parked vehicle", "environment_perception": "An urban two-way street with one narrow lane per direction runs between buildings, divided by a solid orange centerline on smooth pavement, and traffic moves at a slow, moderate flow. A white van directly ahead in the ego lane proceeds slowly, effectively setting the pace. A black sedan is parked along the left curb near the ego lane, narrowing the usable space. In the opposing lane to the right, a white minivan approaches at a steady speed, relevant because the road is tight with railings along both sidewalks.", "hazard_reasoning": "There is a black sedan parked on the left side of the road. The parked vehicle narrows the available driving lane and may obstruct traffic flow, so the driver should carefully manoeuvre around it."}
{"id": "train_07774", "split": "train", "clip_key": "2020-0225-145150_033161_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "033161"}, "frames": ["2020-0225-145150_033161_movie_t-3.jpg", "2020-0225-145150_033161_movie_t-2.jpg", "2020-0225-145150_033161_movie_t-1.jpg", "2020-0225-145150_033161_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "In a dense urban setting on a multi-lane arterial with smooth pavement, same-direction traffic is heavy and mostly stopped. A blue truck is halted directly ahead in the ego lane because of congestion ahead, blocking the ego's path. In the adjacent left lane, a green tarped kei truck sits slightly ahead and stationary in the queue, pacing the ego and limiting lateral space. Farther ahead in that left lane, several white vans and microtrucks remain lined up and stopped, extending the jam and shaping the flow. To the right a hatched merge area opens to an outer lane with no visible moving vehicles. A pedestrian overpass spans the roadway, and a no-parking sign is posted on a roadside pole.", "hazard_reasoning": "There is a blue truck stopped in front of the ego car, because of traffic congestion ahead. You should stop to avoid a potential rear-end collision with the halted vehicle."}
{"id": "train_07775", "split": "train", "clip_key": "titan_clip_958_000432_movie", "source": {"subset": "titan", "scenario": "clip_958", "frame": "000432"}, "frames": ["titan_clip_958_000432_movie_t-3.jpg", "titan_clip_958_000432_movie_t-2.jpg", "titan_clip_958_000432_movie_t-1.jpg", "titan_clip_958_000432_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban side street without a centerline runs between tall buildings, with smooth pavement and light traffic as the ego vehicle proceeds forward. Ahead on the right, a female pedestrian with brown hair wearing black pants and carrying a handbag walks away in the ego lane as she moves around other pedestrians in the pedestrian lane, occupying part of the vehicle's path. Farther ahead to the right, a small group of pedestrians also walks away in the roadway near the curb, limiting available space in the lane. Near left, a black sedan is parked along the curb, slightly narrowing the street.", "hazard_reasoning": "There is a female pedestrian with brown hair, wearing black pants and carrying a handbag, walking on the right hand side of the road, away from the ego-car, in the ego lane, because she is moving around other pedestrians in the pedestrian lane. The driver should manoeuvre carefully around this pedestrian to avoid a potential collision."}
{"id": "train_07776", "split": "train", "clip_key": "titan_clip_1004_000162_movie", "source": {"subset": "titan", "scenario": "clip_1004", "frame": "000162"}, "frames": ["titan_clip_1004_000162_movie_t-3.jpg", "titan_clip_1004_000162_movie_t-2.jpg", "titan_clip_1004_000162_movie_t-1.jpg", "titan_clip_1004_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with brick paving and a narrow single shared lane has no median and is lined with shops; vehicular flow is light while many pedestrians use the roadway. On the right near the camera, a pedestrian wearing a backpack, blue shirt, and jeans holds an umbrella and walks away from the ego vehicle along the edge. Beside them, another adult walks ahead on the right in the same direction within the lane, constraining the vehicle's pace. Farther ahead, small groups of pedestrians cross midblock from left to right across the ego path. A white van is stopped ahead near the right curb by the storefronts.", "hazard_reasoning": "There is a pedestrian wearing a backpack, a blue shirt, and jeans, holding an umbrella, and walking on the right side of the road, away from the ego car. The pedestrian may step further into the travel lane unexpectedly, so the driver should slow down to ensure safe reaction time."}
{"id": "train_07777", "split": "train", "clip_key": "2020-0226-140503_015074_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "015074"}, "frames": ["2020-0226-140503_015074_movie_t-3.jpg", "2020-0226-140503_015074_movie_t-2.jpg", "2020-0226-140503_015074_movie_t-1.jpg", "2020-0226-140503_015074_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van", "environment_perception": "An urban two-way street with a single lane each direction, no median, and dry pavement; traffic is light as the ego approaches a signalized intersection showing green. A white van is parked ahead along the left edge of the ego lane just beyond the crosswalk, with a blue dolly beside it, partially narrowing the lane. A covered three-wheeled scooter crosses the zebra in front from right to left across the ego path. An oncoming white car approaches through the intersection in the opposite lane.", "hazard_reasoning": "There is a white van parked in the left lane with a blue dolly beside it. The stationary vehicle and equipment reduce available road space and could force sudden lane adjustments. Drivers should be aware to avoid potential conflicts and maintain a safe distance."}
{"id": "train_07778", "split": "train", "clip_key": "2020-0220-151845_009387_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "009387"}, "frames": ["2020-0220-151845_009387_movie_t-3.jpg", "2020-0220-151845_009387_movie_t-2.jpg", "2020-0220-151845_009387_movie_t-1.jpg", "2020-0220-151845_009387_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light", "environment_perception": "An urban multilane arterial with smooth pavement carries moderate, slow-moving traffic toward a signalized intersection. The ego vehicle proceeds in the leftmost same-direction lane. A black vehicle directly ahead in the ego lane is stopped at the red light, constraining the pace. To the right, a large flatbed truck loaded with metal pipes moves slowly alongside in the adjacent lane, limiting room to merge. On the left, a red-marked lane has a couple of cars advancing cautiously toward the junction. Overhead signals facing the approach display red.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, because of the red traffic light. The black SUV is stopped due to the red light, so the driver should stop promptly to avoid a collision and obey the signal."}
{"id": "train_07779", "split": "train", "clip_key": "titan_clip_1071_000318_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1071_000318_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1071_000318_movie_t-3_augB1.jpg", "titan_clip_1071_000318_movie_t-2_augB1.jpg", "titan_clip_1071_000318_movie_t-1_augB1.jpg", "titan_clip_1071_000318_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "be cautious of cyclist ahead", "environment_perception": "An urban residential scene on a very narrow two-way road without a center line; the pavement is smooth and the lane bends slightly right with light traffic. A cyclist in a white T-shirt approaches ahead in the middle of the road, riding toward the ego vehicle and occupying the opposing path, which constrains passing space. Orange cones line the red-painted verge on the left near a building, narrowing the edge, while metal railings and overhanging trees on the right confine the corridor. No signals or speed signs are visible.", "hazard_reasoning": "There is a cyclist, wearing a white t-shirt, cycling in the middle of the road towards the ego car. The cyclist's position in the lane poses a collision risk if the driver does not adjust speed or path, so the driver should be alerted to their presence and proceed cautiously."}
{"id": "train_07780", "split": "train", "clip_key": "2020-0210-101957_014834_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "014834"}, "frames": ["2020-0210-101957_014834_movie_t-3.jpg", "2020-0210-101957_014834_movie_t-2.jpg", "2020-0210-101957_014834_movie_t-1.jpg", "2020-0210-101957_014834_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane per direction and smooth asphalt runs through mid-rise buildings, and the ego travels in the left lane with light to moderate flow. A white truck ahead in the ego lane drives away through the zebra crossing, effectively setting the ego vehicle's pace. A scooter slightly ahead near the right edge of the ego lane accelerates forward in the same direction, sharing the lane and occupying the ego path. In the opposing lane to the right, several oncoming cars approach the intersection and continue straight within their lane. The overhead traffic signal facing the ego shows green. Two small trucks are parked along the left shoulder, one close to the travel lane and reducing usable space near the curb.", "hazard_reasoning": "There is a white truck is driving away from the ego car in the ego lane. The truck partially obstructs the view ahead, so the driver should be aware in case of unexpected traffic changes."}
{"id": "train_07781", "split": "train", "clip_key": "2020-0218-103119_032014_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "032014"}, "frames": ["2020-0218-103119_032014_movie_t-3.jpg", "2020-0218-103119_032014_movie_t-2.jpg", "2020-0218-103119_032014_movie_t-1.jpg", "2020-0218-103119_032014_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the truck.", "environment_perception": "An urban two-way street with a single lane each direction and no median is shown; the asphalt is worn with a dark patch, and traffic is light. A white box truck is stopped in the ego lane directly ahead, blocking the path and holding the ego car. In the opposite lane to the right, a marked sedan with a roof light approaches from ahead and continues straight past, remaining in its lane. Buildings, guardrails, and rows of parked bicycles line the sidewalks, and no other moving road users are apparent.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. Because the truck blocks the road ahead, the driver must stop to maintain a safe distance and avoid a collision."}
{"id": "train_07782", "split": "train", "clip_key": "2020-0207-101955_055056_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "055056"}, "frames": ["2020-0207-101955_055056_movie_t-3.jpg", "2020-0207-101955_055056_movie_t-2.jpg", "2020-0207-101955_055056_movie_t-1.jpg", "2020-0207-101955_055056_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial with two lanes in the ego direction plus a narrow right-side auxiliary lane has smooth pavement and heavy, slow flow approaching a junction. A black sedan directly ahead in the ego lane slows with brake lights on because of congestion ahead, controlling the ego vehicle's pace. In the left lane, a white minivan slightly ahead also decelerates into the same queue, matching the flow. A small white car immediately alongside on the left creeps forward beside the ego vehicle, limiting a lane change to that side. Overhead blue guide signs indicate routes E17 and C3 in 150 m, and tall hedges border the separated right-hand lane.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, because of the traffic congestion ahead. Following the vehicle ahead helps maintain a safe gap and avoid sudden braking in heavy traffic."}
{"id": "train_07783", "split": "train", "clip_key": "2020-0207-151349_076054_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "076054"}, "frames": ["2020-0207-151349_076054_movie_t-3.jpg", "2020-0207-151349_076054_movie_t-2.jpg", "2020-0207-151349_076054_movie_t-1.jpg", "2020-0207-151349_076054_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial runs beneath an elevated roadway with two same-direction lanes, a right-side guardrail, and smooth pavement; traffic is heavy and largely stopped. A gray dump truck directly ahead in the ego lane is stationary because of congestion and blocks the ego vehicle's path. To the left, a line of cars, including a black sedan close by and a white van farther ahead, inches forward and then halts again, limiting any chance for the ego vehicle to change lanes. Pedestrians crowd the left sidewalk outside buildings but stay behind the curb. Overhead directional signs span the road as the queue extends under the structure.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe following distance and avoid a collision with the halted vehicle."}
{"id": "train_07784", "split": "train", "clip_key": "titan_clip_1390_000204_movie", "source": {"subset": "titan", "scenario": "clip_1390", "frame": "000204"}, "frames": ["titan_clip_1390_000204_movie_t-3.jpg", "titan_clip_1390_000204_movie_t-2.jpg", "titan_clip_1390_000204_movie_t-1.jpg", "titan_clip_1390_000204_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban commercial street with a single vehicle lane and no median runs between dense storefronts; the patched asphalt is dry and overall motor traffic is light, with pedestrian activity dominating. Ahead, a man in a blue shirt and black pants crosses from the right sidewalk toward the left directly in front of the ego-car, passing through the lane. Farther ahead, small groups of pedestrians walk along both sides and some step near the roadway at shop fronts, close to the ego path. No other moving vehicles are visible in either direction. Orange safety cones line the right edge, and a small white service vehicle stands at the left curb, slightly narrowing the passage.", "hazard_reasoning": "There is a man, wearing a blue shirt and black pants, crossing the street, from the left side of the right side, in front of the ego-car. The driver should manoeuvre carefully around the pedestrian to avoid a collision and maintain safe passage."}
{"id": "train_07785", "split": "train", "clip_key": "2020-0205-103411_120999_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "120999"}, "frames": ["2020-0205-103411_120999_movie_t-3.jpg", "2020-0205-103411_120999_movie_t-2.jpg", "2020-0205-103411_120999_movie_t-1.jpg", "2020-0205-103411_120999_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial with good pavement runs straight, with the ego car in a left-side through lane while a separated bus bay lies to the right behind a low curb; traffic is moderate with queues in the bay but steady in the through lane. A black hatchback directly ahead in the ego lane moves left into the adjacent lane, briefly constraining the ego car's pace as it completes the change. To the right, a city bus stands in the bus bay with several cars and a box truck queued behind it, all isolated from the ego lane by the curb island. Overhead direction boards are visible ahead, and no active traffic signals appear in view.", "hazard_reasoning": "There is a black hatchback in front of the ego car, changing to the left lane from the ego lane. Follow the vehicle ahead to maintain safe distance during its lane change."}
{"id": "train_07786", "split": "train", "clip_key": "titan_clip_716_000162_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_716_000162_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_716_000162_movie_t-3_augB1.jpg", "titan_clip_716_000162_movie_t-2_augB1.jpg", "titan_clip_716_000162_movie_t-1_augB1.jpg", "titan_clip_716_000162_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian crossing ahead", "environment_perception": "An urban back street with a narrow two-way carriageway and no center line runs between shops; the pavement looks worn and traffic is light. Ahead, a pedestrian in a blue shirt holding a cane crosses mid-block from right to left across the ego lane. Farther ahead in the center, an oncoming cyclist rides toward the camera, approaching the crossing area. Near the right foreground, another pedestrian in a white shirt walks along the green-railed edge, staying out of the lane. A blue no-parking sign stands on the left. Cones, parked bicycles, and bagged trash line the curbs, slightly narrowing the roadway.", "hazard_reasoning": "A pedestrian in a blue shirt, holding a cane and crossing the street in the middle of the road from the right side to the left side. The driver should be aware of this pedestrian as they may enter the lane unexpectedly."}
{"id": "train_07787", "split": "train", "clip_key": "2020-0227-104226_033751_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-104226_033751_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-104226_033751_movie_t-3_augB1.jpg", "2020-0227-104226_033751_movie_t-2_augB1.jpg", "2020-0227-104226_033751_movie_t-1_augB1.jpg", "2020-0227-104226_033751_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction, no median, and smooth pavement shows moderate traffic that bunches up ahead. A white box truck directly ahead in the ego lane slows into a short queue, reducing the ego vehicle's pace in congestion. A white SUV approaches in the oncoming lane to the right and continues straight past without interaction. Farther ahead, additional oncoming trucks move toward the camera while several same-direction vehicles in front of the box truck roll slowly, sustaining the backup.", "hazard_reasoning": "There is a white truck slowing down in the ego lane because there is traffic congestion in front of the ego car. Slow down to maintain a safe distance and avoid collision."}
{"id": "train_07788", "split": "train", "clip_key": "2020-0207-101955_030848_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "030848"}, "frames": ["2020-0207-101955_030848_movie_t-3.jpg", "2020-0207-101955_030848_movie_t-2.jpg", "2020-0207-101955_030848_movie_t-1.jpg", "2020-0207-101955_030848_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "be cautious of the white van", "environment_perception": "An urban scene shows the ego-vehicle approaching a wide intersection on a two-way road with one lane per direction; the pavement is smooth, a zebra crossing spans the approach, and a small raised island lines the right edge. Traffic is light. A white van drives across the intersection ahead from right to left, briefly crossing the ego vehicle's path. Several cars travel along the cross street farther ahead, moving through the junction without turning toward the ego lane. A few pedestrians wait at the near-left and far-right corners and others walk along the sidewalks, with no one stepping into the crosswalk.", "hazard_reasoning": "There is a white van driving across the intersection in front of the ego-car, from right to left. Because its lateral movement may intersect your trajectory, you should be cautious of the white van."}
{"id": "train_07789", "split": "train", "clip_key": "2020-0214-145407_010271_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "010271"}, "frames": ["2020-0214-145407_010271_movie_t-3.jpg", "2020-0214-145407_010271_movie_t-2.jpg", "2020-0214-145407_010271_movie_t-1.jpg", "2020-0214-145407_010271_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "be aware of the parked truck", "environment_perception": "An urban multi-lane arterial with a central median and good pavement extends through a signalized intersection, and overall traffic is light to moderate. Ahead across the broad crosswalk, a cyclist moves from left to right in front of the ego lane, slowly crossing the path. Along the left curb just beyond the crosswalk, a gray truck is parked with its rear open as it is being unloaded, occupying the curbside space. Farther ahead in the same direction, several cars continue straight at steady speed, while oncoming vehicles flow on the far side of the median.", "hazard_reasoning": "There is a gray truck parked on the left side of the road, because it is being unloaded. The parked truck may obstruct part of the lane and require the driver to adjust their path, so be aware of its presence."}
{"id": "train_07790", "split": "train", "clip_key": "2020-0227-153144_033826_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "033826"}, "frames": ["2020-0227-153144_033826_movie_t-3.jpg", "2020-0227-153144_033826_movie_t-2.jpg", "2020-0227-153144_033826_movie_t-1.jpg", "2020-0227-153144_033826_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A dense urban arterial with three same-direction lanes runs between tall buildings; the pavement looks smooth and traffic is heavy, bunching at an intersection. A white SUV directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the adjacent left lane, a black minivan slightly ahead is also stopped in the queue and aligns near the stop line. In the adjacent right lane ahead-right, several vehicles inch forward toward the junction, leaving little space to merge. Overhead traffic signals display red, and a roadside sign on the right indicates no right turn.", "hazard_reasoning": "There is a white SUV stopped in the ego lane, because of the red traffic light. The driver should stop in time to avoid colliding with the stationary SUV and comply with traffic signals."}
{"id": "train_07791", "split": "train", "clip_key": "2020-0214-145407_066552_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "066552"}, "frames": ["2020-0214-145407_066552_movie_t-3.jpg", "2020-0214-145407_066552_movie_t-2.jpg", "2020-0214-145407_066552_movie_t-1.jpg", "2020-0214-145407_066552_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes runs between mid-rise buildings, divided from oncoming lanes by a raised planted median on the right; the pavement is smooth and traffic is heavy, moving slowly. A white hatchback directly ahead in the ego lane slows because of congestion ahead, and the ego car follows at reduced speed. In the adjacent left lane, a black minivan travels slightly ahead at a similar pace, keeping close lateral spacing that limits room to merge. Farther ahead in the same lane group, a white van proceeds with the queue and further sets the pace. Overhead gantry signs display straight-ahead arrows for the lanes.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane because of traffic congestion ahead, in front of the ego car. The slowing vehicle indicates reduced traffic flow ahead, so the driver should reduce speed to maintain a safe following distance."}
{"id": "train_07792", "split": "train", "clip_key": "2020-0204-150838_060250_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "060250"}, "frames": ["2020-0204-150838_060250_movie_t-3.jpg", "2020-0204-150838_060250_movie_t-2.jpg", "2020-0204-150838_060250_movie_t-1.jpg", "2020-0204-150838_060250_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated expressway, with two same-direction lanes and a bollard-separated lane on the right; the pavement is dry and traffic is slow. A gray coach bus directly ahead in the ego lane slows and sets the pace, as described. In the right adjacent lane slightly ahead, a large green flatbed truck moves slowly beside the bollards, limiting any chance to pass or merge. A beige SUV follows the truck in the same lane at low speed, running roughly parallel to the ego vehicle and further constraining lateral movement. Parked delivery trucks line the facility on the left behind railings, keeping activity off the carriageway.", "hazard_reasoning": "There is a gray bus slowing down in front of the ego car, in the ego lane. The driver should slow down to maintain a safe distance and avoid rear-ending the bus."}
{"id": "train_07793", "split": "train", "clip_key": "2020-0228-150133_021583_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-150133_021583_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-150133_021583_movie_t-3_augB1.jpg", "2020-0228-150133_021583_movie_t-2_augB1.jpg", "2020-0228-150133_021583_movie_t-1_augB1.jpg", "2020-0228-150133_021583_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way street approaches a level railroad crossing with one lane in each direction, no median, and smooth pavement; traffic is moderate with queues on both sides. A yellow-and-black barrier is lowered in front of the ego car at the crossing, blocking the lane. Beyond the gate, several pedestrians cross left to right over the tracks and through the crosswalk, constraining movement. On the far side, an oncoming silver van waits facing the ego at the stop line behind its gate. To the right curb beyond the gate, a bicyclist stands and waits to proceed and may enter the ego lane once the crossing opens. Railroad crossing signals and equipment are visible.", "hazard_reasoning": "There is a yellow and black traffic barrier in front of the ego car. The lowered barrier blocks the roadway and indicates an active railway crossing, requiring the driver to stop to avoid collision and comply with the crossing signals."}
{"id": "train_07794", "split": "train", "clip_key": "titan_clip_750_000300_movie", "source": {"subset": "titan", "scenario": "clip_750", "frame": "000300"}, "frames": ["titan_clip_750_000300_movie_t-3.jpg", "titan_clip_750_000300_movie_t-2.jpg", "titan_clip_750_000300_movie_t-1.jpg", "titan_clip_750_000300_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential alley appears with a single narrow two-way carriageway, no centerline or divider, smooth asphalt, and very light traffic. Houses and utility poles line both sides, leaving a tight corridor. Ahead on the left, a pedestrian carrying a backpack and wearing black pants walks away along the left edge; because obstacles are on their left, they are in the roadway and occupy part of the ego path. On the right, a light blue van is parked at a driveway, narrowing the lane but remaining stationary.", "hazard_reasoning": "There is a pedestrian carrying a backpack, wearing black pants, and walking on the left side of the road, away from the ego car because of obstacles on their left. The pedestrian's proximity to the travel lane and potential for sudden movement around obstacles warrants slowing down to maintain a safe distance and reaction time."}
{"id": "train_07795", "split": "train", "clip_key": "2020-0212-102546_047137_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "047137"}, "frames": ["2020-0212-102546_047137_movie_t-3.jpg", "2020-0212-102546_047137_movie_t-2.jpg", "2020-0212-102546_047137_movie_t-1.jpg", "2020-0212-102546_047137_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street runs under an elevated expressway with two same-direction lanes curving slightly right; the pavement is smooth and traffic is light. The ego vehicle follows a white SUV directly ahead in its lane as it continues toward the junction, modestly constraining pace. Farther ahead, a small white van moves through the intersection in the same direction and pulls away. A silver hatchback travels alongside on the left, slightly behind, in the adjacent lane and remains clear of the path. A signalized intersection is visible beneath the overpass. A long fence lines the right side with parked cars inside, forming a continuous roadside barrier.", "hazard_reasoning": "There are no visible hazards such as vehicles braking, pedestrians, or obstacles, so the driver can maintain normal driving behavior."}
{"id": "train_07796", "split": "train", "clip_key": "titan_clip_1276_000510_movie", "source": {"subset": "titan", "scenario": "clip_1276", "frame": "000510"}, "frames": ["titan_clip_1276_000510_movie_t-3.jpg", "titan_clip_1276_000510_movie_t-2.jpg", "titan_clip_1276_000510_movie_t-1.jpg", "titan_clip_1276_000510_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban back street in Japan is shown, a narrow two-way road without a marked center line, flanked by buildings and a small parking lot; the wet pavement is intact and traffic is light with no oncoming vehicles. Ahead on the right, a white box truck is parked for loading and unloading with its rear open, encroaching into the travel lane and constraining the ego vehicle's passage. No traffic signals or other notable controls are visible.", "hazard_reasoning": "There is a white truck parked in front of the ego car, on the right side of the road, because it is being loaded/unloaded. The partial obstruction narrows the lane and limits visibility, so the driver should maneuver carefully around the parked truck to avoid collisions."}
{"id": "train_07797", "split": "train", "clip_key": "2020-0131-135401_045042_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "045042"}, "frames": ["2020-0131-135401_045042_movie_t-3.jpg", "2020-0131-135401_045042_movie_t-2.jpg", "2020-0131-135401_045042_movie_t-1.jpg", "2020-0131-135401_045042_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-end collision.", "environment_perception": "An urban two-way road with one narrow lane per direction runs between low-rise buildings, bordered by metal railings and sidewalks; the pavement is smooth and traffic is light. Ahead in the ego lane, a white hatchback is stopped at the stop line because the overhead signal is red, holding the ego vehicle. A pedestrian stands on the right-side corner near the crosswalk without stepping into the roadway. The opposite lane to the right shows no moving vehicles near the junction. Overhead traffic lights at the intersection display red for this approach.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane because of a red traffic light, in front of the ego car. The driver should stop to avoid rear-ending the halted vehicle at the red light."}
{"id": "train_07798", "split": "train", "clip_key": "2020-0220-102630_117374_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "117374"}, "frames": ["2020-0220-102630_117374_movie_t-3.jpg", "2020-0220-102630_117374_movie_t-2.jpg", "2020-0220-102630_117374_movie_t-1.jpg", "2020-0220-102630_117374_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane each direction curves gently right, divided by a solid yellow centerline and a short hatched median; the pavement looks smooth and traffic is light to moderate. Ahead in the ego lane, a black van drives away from the ego car at a steady pace, defining the following distance. In the oncoming lane to the right, several cars approach through the bend but stay in their lane and do not affect the ego path. A signalized intersection is visible farther ahead above the roadway.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. Be aware of the van as it may affect the ego-vehicle if it slows or changes behavior unexpectedly."}
{"id": "train_07799", "split": "train", "clip_key": "titan_clip_980_000552_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_980_000552_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_980_000552_movie_t-3_augB1.jpg", "titan_clip_980_000552_movie_t-2_augB1.jpg", "titan_clip_980_000552_movie_t-1_augB1.jpg", "titan_clip_980_000552_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with two-way traffic and no median, narrow and slightly worn pavement, carries light flow. The ego travels on the left side of the road. On the right near the curb, a cyclist in a black shirt rides toward the ego because the sidewalk by the shops is blocked, passing close to the vehicle's path. In the center ahead, another oncoming cyclist approaches down the middle, reducing available space. Farther ahead along the left edge, a cyclist moving in the same direction rides away and slightly constrains pace. Storefront displays and carts narrow the right-side sidewalk and edge of the lane.", "hazard_reasoning": "There is a cyclist wearing a black shirt, cycling on the right side of the road, towards the ego car, because the sidewalk is blocked. Because the sidewalk is blocked, the cyclist has moved into the roadway, increasing collision risk, so the driver should slow down."}
{"id": "train_07800", "split": "train", "clip_key": "2020-0205-152530_041868_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "041868"}, "frames": ["2020-0205-152530_041868_movie_t-3.jpg", "2020-0205-152530_041868_movie_t-2.jpg", "2020-0205-152530_041868_movie_t-1.jpg", "2020-0205-152530_041868_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement meets a wide signalized intersection with zebra crossings, and opposing directions run on the left and right halves with moderate overall flow. The ego-vehicle is stopped at the stop line while same-direction traffic ahead beyond the junction, including a small white truck in the left lane, proceeds straight and sets the pace downstream. On the right half of the roadway, a steady stream of oncoming cars moves through the intersection toward the camera without conflicting with the ego lane. Several pedestrians wait at the left curb by the crosswalk, poised to cross when allowed. A dark van stands at the near-right curb outside the travel lanes. Overhead traffic lights and a no-U-turn sign are visible.", "hazard_reasoning": "No hazards are present in the scene; traffic is orderly, the road surface is clear, and there are no unexpected obstacles or pedestrians entering the roadway, so no specific warning is required."}
{"id": "train_07801", "split": "train", "clip_key": "titan_clip_849_000054_movie", "source": {"subset": "titan", "scenario": "clip_849", "frame": "000054"}, "frames": ["titan_clip_849_000054_movie_t-3.jpg", "titan_clip_849_000054_movie_t-2.jpg", "titan_clip_849_000054_movie_t-1.jpg", "titan_clip_849_000054_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A dense urban shopping street with a narrow single mixed-traffic lane, no median, and block paving in good condition shows light, slow traffic. On the left edge near a storefront, a pedestrian wearing a black jacket and white pants and carrying a handbag walks toward the ego vehicle, close to the lane and potentially entering its path. Two large box trucks are stopped along the right curb, one very near the camera and another farther ahead, narrowing the corridor and constraining the ego vehicle's pace. A small car proceeds ahead in the same direction at low speed and gradually pulls away. A do-not-enter sign marks a side alley on the left.", "hazard_reasoning": "There is a pedestrian wearing a black jacket, white pants, and carrying a handbag, walking at the left side of the road, toward the ego car. The driver should carefully manoeuvre to maintain safe distance and avoid hitting the pedestrian."}
{"id": "train_07802", "split": "train", "clip_key": "2020-0207-101955_012610_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_012610_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_012610_movie_t-3_augB1.jpg", "2020-0207-101955_012610_movie_t-2_augB1.jpg", "2020-0207-101955_012610_movie_t-1_augB1.jpg", "2020-0207-101955_012610_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane in each direction runs between mid-rise buildings, separated by double center lines; the pavement looks smooth and traffic is moderate and moving. A green box truck ahead in the ego lane slows, bunching with vehicles farther ahead and effectively setting the ego vehicle's pace. A white microvan and a dark van are stopped along the left curb ahead, remaining stationary and narrowing lateral space next to the ego lane. An oncoming white van approaches in its right-side lane on the far side of the center lines, continuing steadily past with no immediate conflict.", "hazard_reasoning": "There is a green truck slowing in the ego lane because of traffic congestion ahead on the road. The green truck is decelerating due to congestion ahead, so the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_07803", "split": "train", "clip_key": "2020-0206-101736_071378_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "071378"}, "frames": ["2020-0206-101736_071378_movie_t-3.jpg", "2020-0206-101736_071378_movie_t-2.jpg", "2020-0206-101736_071378_movie_t-1.jpg", "2020-0206-101736_071378_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes and opposing lanes separated by a painted median shows smooth pavement and slow, queuing traffic. A blue truck is stopped directly ahead in the ego lane amid a traffic queue, constraining the ego car's pace. To the left, a white van in the adjacent lane moves slowly forward past the queue, continuing ahead beside the ego vehicle. Farther ahead in the left lane, a flatbed truck carrying materials crawls in the same direction, contributing to the congestion. No salient signals or hazards are visible.", "hazard_reasoning": "There is a blue truck stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver must stop to avoid collision and maintain safe spacing due to the congested traffic situation."}
{"id": "train_07804", "split": "train", "clip_key": "2020-0205-152530_003732_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-152530_003732_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-152530_003732_movie_t-3_augB1.jpg", "2020-0205-152530_003732_movie_t-2_augB1.jpg", "2020-0205-152530_003732_movie_t-1_augB1.jpg", "2020-0205-152530_003732_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of the gray van merging", "environment_perception": "On a dense urban two-lane undivided street with a centerline, the pavement is dry and smooth and traffic appears light. Ahead, an oncoming gray van from the right-side lane steers across the centerline into the ego lane to drive around a parked vehicle in its lane, briefly encroaching on the ego path before straightening. The parked car sits near the curb on the oncoming side, narrowing that lane and prompting the van's maneuver. A pedestrian walks along the right sidewalk near storefronts, continuing parallel to traffic without approaching the roadway. No other vehicles noticeably affect the ego vehicle.", "hazard_reasoning": "There is a gray van in the right lane, driving toward the ego car, cutting into the ego lane, because they are driving around a parked vehicle in their lane. The driver should be aware of the gray van merging into the lane to anticipate its movement and prevent a collision."}
{"id": "train_07805", "split": "train", "clip_key": "2020-0212-150403_000870_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "000870"}, "frames": ["2020-0212-150403_000870_movie_t-3.jpg", "2020-0212-150403_000870_movie_t-2.jpg", "2020-0212-150403_000870_movie_t-1.jpg", "2020-0212-150403_000870_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "The scene is a dense urban corridor, with the ego vehicle in the left lane of a multi-lane road without a physical median and smooth pavement including a red-painted lane strip. Traffic is moderate to heavy and queues at a signalized intersection. A black sedan directly ahead in the ego lane is stopped at the red traffic light, constraining our pace. In the adjacent right lanes, several same-direction vehicles, including an SUV and a hatchback, roll forward briefly then line up for the signal. Perpendicular cross traffic moves through the intersection ahead while our lane remains stationary. Pedestrians stand on the left sidewalk by shops behind a railing and stay off the roadway. Overhead traffic lights show red for our approach.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, because of the red traffic light. The stopped vehicle indicates the light is red ahead, requiring the driver to stop in order to avoid a rear-end collision and comply with traffic signals."}
{"id": "train_07806", "split": "train", "clip_key": "titan_clip_209_000534_movie", "source": {"subset": "titan", "scenario": "clip_209", "frame": "000534"}, "frames": ["titan_clip_209_000534_movie_t-3.jpg", "titan_clip_209_000534_movie_t-2.jpg", "titan_clip_209_000534_movie_t-1.jpg", "titan_clip_209_000534_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down for the crossing pedestrian", "environment_perception": "An urban two-way street with single lanes in each direction runs between mid-rise buildings; there is no median and the pavement is smooth, with light vehicular traffic and a single car far ahead. At a zebra crossing directly ahead, a man in a white shirt crosses from right to left, entering the ego lane. To his right, a woman holding a white umbrella steps onto the crosswalk moving left, continuing across in front of the vehicle. Additional pedestrians in business attire cross from both sides, occupying the ego vehicle's path and constraining its pace, while others wait near the curbs. A blue pedestrian-crossing sign is visible near the intersection.", "hazard_reasoning": "There is a man wearing a white shirt, crossing the street from the right side to the left side, at a pedestrian crossing. The driver should slow down to allow the pedestrian to cross safely."}
{"id": "train_07807", "split": "train", "clip_key": "titan_clip_202_000534_movie", "source": {"subset": "titan", "scenario": "clip_202", "frame": "000534"}, "frames": ["titan_clip_202_000534_movie_t-3.jpg", "titan_clip_202_000534_movie_t-2.jpg", "titan_clip_202_000534_movie_t-1.jpg", "titan_clip_202_000534_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with no median and smooth pavement carries light traffic as the ego car continues in the left lane toward an intersection. Several delivery vans are parked along the left curb, narrowing the lane. On the left edge ahead, a man in black walks toward the ego vehicle along the roadway because of a parked vehicle and may enter the ego lane. Farther ahead, a small white vehicle proceeds through the intersection in the same direction without affecting the approach. A red triangular stop sign is visible at the upcoming intersection.", "hazard_reasoning": "There is a man wearing black shorts and a black shirt and walking on the left side of the road, towards the ego car, because of a parked vehicle. The pedestrian may step into the roadway unexpectedly because the parked van forces him closer to traffic, so the driver should manoeuvre around the pedestrian to maintain safety."}
{"id": "train_07808", "split": "train", "clip_key": "2020-0203-154554_032806_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "032806"}, "frames": ["2020-0203-154554_032806_movie_t-3.jpg", "2020-0203-154554_032806_movie_t-2.jpg", "2020-0203-154554_032806_movie_t-1.jpg", "2020-0203-154554_032806_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs under an elevated structure with three same-direction lanes, a right-side guardrail, and smooth dry pavement; traffic is moderate and flows steadily. A white limousine bus ahead in the ego lane accelerates and pulls away as the lane in front of it remains open. Farther ahead in the right lane, a black minivan continues straight at a steady pace, remaining clear of the ego lane. On the left, a white compact car travels alongside slightly behind the ego vehicle and keeps parallel speed, remaining in its lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07809", "split": "train", "clip_key": "2020-0131-135401_076721_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "076721"}, "frames": ["2020-0131-135401_076721_movie_t-3.jpg", "2020-0131-135401_076721_movie_t-2.jpg", "2020-0131-135401_076721_movie_t-1.jpg", "2020-0131-135401_076721_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial runs between mid-rise buildings, with a hedge median on the right separating oncoming traffic; the dry pavement looks smooth and traffic is light to moderate. Ahead in the ego lane, a black hatchback travels steadily at close range and effectively sets the pace. Farther ahead in the middle of the road, a white van continues toward a signalized intersection, influencing the flow of vehicles behind it. In the left lane, a small car proceeds straight in parallel without merging toward the ego lane. A pedestrian walks along the left sidewalk near building entrances and remains clear of the roadway.", "hazard_reasoning": "No caption provided. The road is clear and traffic flows smoothly, indicating no hazards and allowing you to proceed as normal."}
{"id": "train_07810", "split": "train", "clip_key": "2020-0203-114632_046849_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "046849"}, "frames": ["2020-0203-114632_046849_movie_t-3.jpg", "2020-0203-114632_046849_movie_t-2.jpg", "2020-0203-114632_046849_movie_t-1.jpg", "2020-0203-114632_046849_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with multiple same-direction lanes runs straight past mid-rise buildings, separated from oncoming traffic on the right by a wide striped median; the pavement is dry and intact, and traffic flows moderately under green signals. A silver van directly ahead in the ego lane accelerates away with the green light, leading the movement and setting the ego car's pace. A white box truck ahead-right in the adjacent lane continues straight at a similar speed, holding position and limiting a rightward lane change. A silver sedan front-left near the curb edges forward more slowly alongside, reducing space on the ego's left. Pedestrians line both sidewalks near the crosswalks and wait without entering the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07811", "split": "train", "clip_key": "titan_clip_1179_000426_movie", "source": {"subset": "titan", "scenario": "clip_1179", "frame": "000426"}, "frames": ["titan_clip_1179_000426_movie_t-3.jpg", "titan_clip_1179_000426_movie_t-2.jpg", "titan_clip_1179_000426_movie_t-1.jpg", "titan_clip_1179_000426_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the obstruction", "environment_perception": "An urban two-way street with narrow lanes and no median runs straight ahead; the pavement is smooth and traffic is light, with the oncoming lane to the right mostly clear. A gray box truck is parked on the left edge ahead, and another truck stands just beyond it, both occupying part of the ego lane and constraining the path. A man stands at the rear of the nearer truck on the roadway, handling the tailgate and standing close to the lane the car must pass. Farther ahead on the right, a pedestrian walks along the sidewalk beside a guardrail, keeping to the edge and not entering the road. Dense roadside bushes on the right narrow the view and leave limited clearance past the parked trucks.", "hazard_reasoning": "There is a gray truck parked on the left side of the road. Because the truck encroaches into the traffic lane and blocks sight lines, the driver must manoeuvre carefully around the obstruction to maintain safe clearance."}
{"id": "train_07812", "split": "train", "clip_key": "2020-0213-143552_034945_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "034945"}, "frames": ["2020-0213-143552_034945_movie_t-3.jpg", "2020-0213-143552_034945_movie_t-2.jpg", "2020-0213-143552_034945_movie_t-1.jpg", "2020-0213-143552_034945_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes and a right-side barrier; the pavement is smooth and traffic is moderate but slows into a queue ahead. A white box truck directly ahead in the ego lane slows because of congestion ahead, and the ego car matches its pace. A black minivan slightly ahead to the left proceeds slowly in the left lane near the curb, remaining parallel to the ego vehicle. Farther ahead in the middle-right lane, a small white van also brakes lightly as it joins the same slowdown. Large 50 speed markings are painted on the roadway and overhead expressway signs hang above. Pedestrians walk along the left sidewalk behind a guardrail.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain safe distance and prevent a rear-end collision."}
{"id": "train_07813", "split": "train", "clip_key": "2020-0129-144857_037645_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "037645"}, "frames": ["2020-0129-144857_037645_movie_t-3.jpg", "2020-0129-144857_037645_movie_t-2.jpg", "2020-0129-144857_037645_movie_t-1.jpg", "2020-0129-144857_037645_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs under an elevated expressway, with a guardrail and columns close on the right and buildings to the left; the pavement is dry and traffic is moderate, bunching ahead. In the ego lane directly ahead, a black SUV slows because of congestion, setting the ego vehicle's pace. In the adjacent right lane slightly ahead, a white kei van continues at a similar speed. Farther ahead in that right lane, a white passenger car also slows into the forming queue. No notable signals or posted speeds are visible.", "hazard_reasoning": "There is a black SUV slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_07814", "split": "train", "clip_key": "2020-0127-132751_085933_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "085933"}, "frames": ["2020-0127-132751_085933_movie_t-3.jpg", "2020-0127-132751_085933_movie_t-2.jpg", "2020-0127-132751_085933_movie_t-1.jpg", "2020-0127-132751_085933_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial is shown with the ego vehicle traveling in the left-side lane; plastic bollards on the right form a divider toward oncoming lanes and the pavement appears dry with light, steady traffic. Ahead in the ego lane, a green tarp-covered truck is moving left into the adjacent lane, and it currently sets the ego pace. Farther ahead in the same direction, a black sedan continues straight with similar speed and spacing. On the left shoulder, a large flatbed truck is parked at the curb, stationary outside the travel lane.", "hazard_reasoning": "There is a green truck lane changing from the ego lane to the left lane because of traffic congestion ahead on the road. Slow down to allow space for the merging truck and avoid collision."}
{"id": "train_07815", "split": "train", "clip_key": "2020-0127-132751_104380_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "104380"}, "frames": ["2020-0127-132751_104380_movie_t-3.jpg", "2020-0127-132751_104380_movie_t-2.jpg", "2020-0127-132751_104380_movie_t-1.jpg", "2020-0127-132751_104380_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-lane two-way road with a solid center line runs past shops; the pavement is dry and traffic moves slowly. A silver microvan directly ahead in the ego lane shows brake lights and creeps forward, holding the ego vehicle's pace. On the right edge, a pedestrian wearing a face mask and carrying a handbag steps off the curb and crosses leftward in the middle of traffic directly in front of the ego car toward the left side, momentarily entering the ego path.", "hazard_reasoning": "There is a pedestrian wearing a handbag and face mask, crossing the street in the middle of traffic directly in front of the ego car, to the left side of the road. The driver must stop immediately to yield to the crossing pedestrian and prevent a collision."}
{"id": "train_07816", "split": "train", "clip_key": "2020-0205-103411_015565_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "015565"}, "frames": ["2020-0205-103411_015565_movie_t-3.jpg", "2020-0205-103411_015565_movie_t-2.jpg", "2020-0205-103411_015565_movie_t-1.jpg", "2020-0205-103411_015565_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multilane divided arterial runs through a dense city corridor, with the ego car in the rightmost of three same-direction lanes beside a fence-lined median; the pavement is clean and traffic is heavy and slow. Directly ahead in the ego lane, a black van slows and compresses the gap, controlling the ego vehicle's pace. To the left, a white sedan in the adjacent lane creeps forward alongside, potentially blocking an easy merge. Farther ahead in that left lane, a silver minivan also slows in the queue, reinforcing the bottleneck next to the ego lane. Across the median, oncoming cars continue steadily with more spacing, and blue overhead direction signs are visible ahead.", "hazard_reasoning": "There is a black van slowing down in front of the ego car in the ego lane. The black van's reduced speed may require a complete stop to avoid a collision, so the driver should stop immediately."}
{"id": "train_07817", "split": "train", "clip_key": "titan_clip_1320_000432_movie", "source": {"subset": "titan", "scenario": "clip_1320", "frame": "000432"}, "frames": ["titan_clip_1320_000432_movie_t-3.jpg", "titan_clip_1320_000432_movie_t-2.jpg", "titan_clip_1320_000432_movie_t-1.jpg", "titan_clip_1320_000432_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "A narrow urban street with a single left-side lane and smooth pavement is shown, with no median and light traffic; bollards and a fence line the right edge. Ahead in front of the ego car, a gray truck is parked along the left side with its rear open, protruding into the lane and constraining the ego vehicle's path. At the truck's rear, a worker on the left pushes a handcart stacked with boxes from the sidewalk toward the truck, moving at the roadway edge and possibly entering the ego lane. Farther ahead a pedestrian walks along the right sidewalk. No other moving vehicles are visible.", "hazard_reasoning": "There is a gray truck parked on the left side road, in front of the ego-car. The parked truck partially blocks the left lane, requiring the driver to manoeuvre carefully to avoid a collision."}
{"id": "train_07818", "split": "train", "clip_key": "2020-0225-102455_006633_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "006633"}, "frames": ["2020-0225-102455_006633_movie_t-3.jpg", "2020-0225-102455_006633_movie_t-2.jpg", "2020-0225-102455_006633_movie_t-1.jpg", "2020-0225-102455_006633_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane street with smooth, slightly wet pavement shows slow, heavy flow with no physical median and a narrow curbside shoulder on the right. A brown dump truck directly ahead in the ego lane is stopped because of traffic congestion ahead, blocking the ego vehicle's path and setting the pace. To the left, a black sedan in the adjacent same-direction lane continues creeping forward and passes the stopped truck, indicating that lane is moving. On the right near the curb at a side street, a white car waits at the intersection and could merge into the main road once there is space, making it relevant to the ego vehicle's near-side. No signals or speed signs are clearly visible.", "hazard_reasoning": "There is a brown truck stopped in the ego lane, because of traffic congestion ahead. You should stop to maintain a safe distance and avoid collision under this situation."}
{"id": "train_07819", "split": "train", "clip_key": "2020-0204-103442_084946_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "084946"}, "frames": ["2020-0204-103442_084946_movie_t-3.jpg", "2020-0204-103442_084946_movie_t-2.jpg", "2020-0204-103442_084946_movie_t-1.jpg", "2020-0204-103442_084946_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban two-way road with one lane each direction and no median approaches a signalized intersection; the pavement looks smooth and traffic is light. A silver van ahead in the ego lane accelerates away toward the junction as the traffic light is green, opening a gap to the ego vehicle. Two oncoming cars in their right-hand lane approach the intersection at moderate speed and continue straight without encroaching on the ego lane. A white box van passes close on the right in the oncoming lane, heading toward the camera.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07820", "split": "train", "clip_key": "2020-0131-103016_084228_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "084228"}, "frames": ["2020-0131-103016_084228_movie_t-3.jpg", "2020-0131-103016_084228_movie_t-2.jpg", "2020-0131-103016_084228_movie_t-1.jpg", "2020-0131-103016_084228_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial in a dense city setting runs past a station structure, the pavement is good, and traffic is heavy and mostly stop-and-go. Directly ahead in the ego lane, a white van is stopped because of congestion and blocks the path. In the left curb lane, a green city bus ahead creeps forward near the curb and continues slowly with the queue. To the right, a white van in the adjacent lane moves slowly beside the ego vehicle, and a darker minivan farther ahead in that lane also waits in the jam. Construction fencing and the station platforms along the left edge create a constrained shoulder but no lane obstacles.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted van in the ego lane."}
{"id": "train_07821", "split": "train", "clip_key": "2020-0204-103442_056099_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-103442_056099_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-103442_056099_movie_t-3_augB1.jpg", "2020-0204-103442_056099_movie_t-2_augB1.jpg", "2020-0204-103442_056099_movie_t-1_augB1.jpg", "2020-0204-103442_056099_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop for congestion ahead.", "environment_perception": "An urban two-way street with one lane each direction and no median is lined with trees and apartments; the dry pavement is narrow, and traffic is heavy in both directions. A black sedan directly ahead in the ego lane slows to a near stop because of congestion up the road, constraining the ego car's pace. In the oncoming lane to the right, a white wagon and a queue of cars roll forward slowly toward the camera. On the left sidewalk, a person with a bicycle moves slowly beside the railing next to the curb.", "hazard_reasoning": "There's a black sedan slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The sedan's deceleration due to congestion may require the driver to adjust speed or prepare to stop to maintain a safe following distance."}
{"id": "train_07822", "split": "train", "clip_key": "2020-0207-151349_058403_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "058403"}, "frames": ["2020-0207-151349_058403_movie_t-3.jpg", "2020-0207-151349_058403_movie_t-2.jpg", "2020-0207-151349_058403_movie_t-1.jpg", "2020-0207-151349_058403_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban four-lane undivided road with good pavement runs between mid-rise buildings, and traffic in both directions is heavy and slow. A white sedan directly ahead in the ego lane is stopped because congestion backs up further along, holding the ego vehicle. A white minivan in the adjacent right same-direction lane creeps forward beside the sedan, limiting any chance to pass. Oncoming vehicles, including a dark truck near the right edge, move slowly toward the camera in their lanes and remain separated by the center line.", "hazard_reasoning": "There is a white sedan stopped in the ego lane because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary vehicle and maintain a safe following distance under these conditions."}
{"id": "train_07823", "split": "train", "clip_key": "titan_clip_1039_000528_movie", "source": {"subset": "titan", "scenario": "clip_1039", "frame": "000528"}, "frames": ["titan_clip_1039_000528_movie_t-3.jpg", "titan_clip_1039_000528_movie_t-2.jpg", "titan_clip_1039_000528_movie_t-1.jpg", "titan_clip_1039_000528_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street with a single narrow lane each direction has smooth pavement and very light traffic, with no median. The oncoming side is partially narrowed by a short coned work area. A black sedan is parked ahead along the left side in the ego lane, encroaching into the path and reducing usable width. On the right, a silver van stands static within the coned-off zone on the oncoming side. A blue-and-red no-parking sign is posted on the left. Cones, barriers, and roadside equipment form a brief roadside work zone but no moving vehicles appear nearby.", "hazard_reasoning": "There is a black sedan parked on the left side of the road, in the ego lane. Carefully manoeuvre to avoid collision with this obstructing vehicle, as it blocks your travel lane and poses a risk if not navigated around."}
{"id": "train_07824", "split": "train", "clip_key": "2020-0205-103411_012545_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "012545"}, "frames": ["2020-0205-103411_012545_movie_t-3.jpg", "2020-0205-103411_012545_movie_t-2.jpg", "2020-0205-103411_012545_movie_t-1.jpg", "2020-0205-103411_012545_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way road runs between tall buildings, the pavement is smooth and traffic is light, with vehicles halted at a signalized intersection; oncoming lanes lie to the right, divided by painted lines. A black sedan directly ahead in the ego lane is stopped for the red light and constrains the ego vehicle. In the adjacent left lane by the curb, a gray van slightly ahead remains stationary before the crosswalk, parallel to the ego lane. A pedestrian stands on the far right corner near the crosswalk, waiting on the sidewalk. An overhead traffic signal facing the ego shows red.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid colliding with the halted vehicle and comply with the traffic signal."}
{"id": "train_07825", "split": "train", "clip_key": "titan_clip_1343_000330_movie", "source": {"subset": "titan", "scenario": "clip_1343", "frame": "000330"}, "frames": ["titan_clip_1343_000330_movie_t-3.jpg", "titan_clip_1343_000330_movie_t-2.jpg", "titan_clip_1343_000330_movie_t-1.jpg", "titan_clip_1343_000330_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the white minivan", "environment_perception": "An urban two-way street with one narrow lane each direction has no median and smooth pavement, and traffic is light as the ego vehicle approaches an unsignalized zebra crossing at a corner. Two pedestrians ahead cross left to right on the crosswalk directly across the ego lane, keeping the vehicle slow. A scooter with a rider waits at the left edge near the crosswalk beside the ego lane. Several pedestrians stand on the near-right sidewalk by the corner, close to the curb and crosswalk. Parked vehicles line the left curb, including a white minivan near the intersection, slightly narrowing the available lane.", "hazard_reasoning": "There is a white minivan parked on the right side of the road. This parked vehicle may obscure pedestrians stepping off the curb and could impede lane usage, so drivers should be cautious."}
{"id": "train_07826", "split": "train", "clip_key": "titan_clip_247_000390_movie", "source": {"subset": "titan", "scenario": "clip_247", "frame": "000390"}, "frames": ["titan_clip_247_000390_movie_t-3.jpg", "titan_clip_247_000390_movie_t-2.jpg", "titan_clip_247_000390_movie_t-1.jpg", "titan_clip_247_000390_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the parked truck ahead", "environment_perception": "A narrow urban two-way street with shops on both sides has smooth pavement, no median, and light traffic as it bends left toward a rail underpass ahead. On the left just ahead, a white truck is parked with its rear open because it is being unloaded; a worker stands at the tailgate and the truck intrudes into the travel lane, narrowing the path. Ahead near the right curb, a bicyclist rides in the same direction at low speed and approaches the constricted gap beside the truck, influencing the ego vehicle's pace. Farther ahead on the right sidewalk, a pedestrian walks away from the camera and stays off the roadway. No signals or posted speeds are evident, and no oncoming vehicles appear.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. The obstruction may obscure cyclists or pedestrians and force lane adjustments, so the driver should exercise caution."}
{"id": "train_07827", "split": "train", "clip_key": "2020-0131-135401_034330_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "034330"}, "frames": ["2020-0131-135401_034330_movie_t-3.jpg", "2020-0131-135401_034330_movie_t-2.jpg", "2020-0131-135401_034330_movie_t-1.jpg", "2020-0131-135401_034330_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "In a compact urban neighborhood, the ego car approaches a signalized intersection on a narrow two-way road in the left lane, with smooth pavement and a small raised island on the right; traffic is light. A white hatchback directly ahead in the ego lane is stopped at the line for a red signal, holding the ego car. On the cross street to the right, a white van waits before the crosswalk and remains out of the ego path. Farther along the same curb, a red truck is stationary near the sidewalk outside the travel lanes. The overhead traffic light facing the ego direction shows red.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of the red traffic light. Therefore, the driver must stop to avoid a rear-end collision and comply with the red signal."}
{"id": "train_07828", "split": "train", "clip_key": "2020-0214-102601_084034_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "084034"}, "frames": ["2020-0214-102601_084034_movie_t-3.jpg", "2020-0214-102601_084034_movie_t-2.jpg", "2020-0214-102601_084034_movie_t-1.jpg", "2020-0214-102601_084034_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow two-lane urban street with one lane each way and no median shows smooth pavement and light traffic briefly queued in the ego lane. A gray SUV directly ahead in the ego lane is stopped as traffic waits at a red signal, holding the ego vehicle stationary. Farther ahead in the same lane, a large box truck is also stopped at the front of the queue near the intersection, constraining progress until the light changes. On the right sidewalk near a crosswalk, two pedestrians walk toward the corner and slow beside the curb, potentially entering the crossing area.", "hazard_reasoning": "There is a gray SUV stopped in the ego lane in front of the ego car, because of the red traffic light. The driver should stop to maintain a safe distance and obey the red light."}
{"id": "train_07829", "split": "train", "clip_key": "2020-0228-150133_004523_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "004523"}, "frames": ["2020-0228-150133_004523_movie_t-3.jpg", "2020-0228-150133_004523_movie_t-2.jpg", "2020-0228-150133_004523_movie_t-1.jpg", "2020-0228-150133_004523_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction and a narrow bicycle lane by the left curb runs between buildings, the pavement dry and traffic slow. A gray box truck stops directly ahead in the ego lane due to congestion further up the road, holding the ego vehicle at a standstill. To the right, an oncoming light truck proceeds slowly in the opposite lane past the queue, not entering the ego path. Farther ahead on that side, another small truck stands near the curb, reducing space for oncoming traffic. A metal railing lines a canal along the left side.", "hazard_reasoning": "There is a gray truck stopped in the ego lane because of traffic congestion ahead on the road. The driver should stop to avoid rear-ending the halted truck under these conditions."}
{"id": "train_07830", "split": "train", "clip_key": "titan_clip_394_000126_movie", "source": {"subset": "titan", "scenario": "clip_394", "frame": "000126"}, "frames": ["titan_clip_394_000126_movie_t-3.jpg", "titan_clip_394_000126_movie_t-2.jpg", "titan_clip_394_000126_movie_t-1.jpg", "titan_clip_394_000126_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian entering the lane", "environment_perception": "A narrow urban shopping street with interlocking brick pavement serves as a single shared lane, and vehicle traffic is light while pedestrians dominate; a flatbed truck is parked on the right, narrowing the way. A pedestrian ahead in the middle of the lane walks away from the camera, occupying the ego path and constraining speed. On the right, a pedestrian carrying a backpack, wearing a white shirt and black pants, walks toward the ego vehicle along the roadway because the parked truck blocks the side space, and he may edge into the lane. Near the truck, two more pedestrians pause and then sidestep around it close to the vehicle's path amid cones and tape, further reducing clearance.", "hazard_reasoning": "There is a pedestrian carrying a backpack, wearing a white shirt and black pants, and walking on the right side of the road, towards the ego car, because of the parked vehicle. The pedestrian's path heads into the lane due to the parked truck, increasing collision risk if not anticipated; the driver must be aware to avoid sudden maneuvers."}
{"id": "train_07831", "split": "train", "clip_key": "titan_clip_240_000450_movie", "source": {"subset": "titan", "scenario": "clip_240", "frame": "000450"}, "frames": ["titan_clip_240_000450_movie_t-3.jpg", "titan_clip_240_000450_movie_t-2.jpg", "titan_clip_240_000450_movie_t-1.jpg", "titan_clip_240_000450_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of loading vehicle ahead", "environment_perception": "A narrow urban commercial street with a single two-way lane, no median, and smooth asphalt shows light same-direction traffic. The ego vehicle proceeds past a zebra crossing into a tree-lined block between tall boutiques. On the left just beyond the crosswalk, a white delivery van is parked and being loaded, with stacks of boxes and a hand truck at its rear protruding slightly into the lane, narrowing the passage. Farther ahead in the same direction, another white van near the centerline moves slowly past the loading area and constrains the pace. No pedestrians or oncoming vehicles are visible, and there are no signals in view, only street lamps and shop signage.", "hazard_reasoning": "There is a white van parked on the left side of the road because it is being loaded. It may obstruct your view and suddenly enter the travel lane, so you should be aware of this loading vehicle ahead."}
{"id": "train_07832", "split": "train", "clip_key": "2020-0131-135401_081027_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "081027"}, "frames": ["2020-0131-135401_081027_movie_t-3.jpg", "2020-0131-135401_081027_movie_t-2.jpg", "2020-0131-135401_081027_movie_t-1.jpg", "2020-0131-135401_081027_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated two-lane road with one lane each direction, marked by a yellow center line and flanked by concrete barriers, climbs toward an overpass; pavement appears smooth and traffic is light. A gray minivan ahead in the ego lane proceeds uphill at a steady pace, effectively setting our speed. Farther ahead, a white car in the same direction continues up the rise with a clear gap. The opposing lane to the right of the center line shows no oncoming vehicles. A separate ramp rises along the right behind a barrier, and an overhead viaduct casts a broad shadow across the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07833", "split": "train", "clip_key": "titan_clip_895_000024_movie", "source": {"subset": "titan", "scenario": "clip_895", "frame": "000024"}, "frames": ["titan_clip_895_000024_movie_t-3.jpg", "titan_clip_895_000024_movie_t-2.jpg", "titan_clip_895_000024_movie_t-1.jpg", "titan_clip_895_000024_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban shopping street with smooth unmarked pavement has light vehicular flow but many pedestrians, and there is no visible center divider. On the left near the ego vehicle, a white box truck is parked partly in the travel way with its rear door open and liftgate down as it is being unloaded, reducing the available lane width. Ahead, a pedestrian crosses diagonally from the right toward the truck across the ego path, causing the approach to slow. Farther ahead on the right, two pedestrians walk along the roadway edge and drift toward the lane, so they may step into the path. A roadside board beside the truck displays a red no-vehicles symbol, indicating a local restriction in this segment.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. The parked truck obstructs the driver's forward view and may hide pedestrians or other hazards, so the driver needs to manoeuvre carefully around it."}
{"id": "train_07834", "split": "train", "clip_key": "titan_clip_609_000540_movie", "source": {"subset": "titan", "scenario": "clip_609", "frame": "000540"}, "frames": ["titan_clip_609_000540_movie_t-3.jpg", "titan_clip_609_000540_movie_t-2.jpg", "titan_clip_609_000540_movie_t-1.jpg", "titan_clip_609_000540_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "A narrow urban one-lane street with textured paving leads into a small plaza; the surface looks good and vehicular flow is light but slowed by pedestrians and a stopped van. On the left edge ahead, a silver van is parked partly in the lane, narrowing the passage and constraining the ego car's path. In front of this van, a pedestrian carrying a handbag and a milk jug walks toward the ego vehicle along the left side because the parked vehicle blocks the sidewalk, and he may step into the ego lane. From the right, another pedestrian with a backpack steps off the sidewalk and crosses ahead toward the left, briefly occupying the vehicle's path. A blue right-turn-only sign and a no-parking sign are posted on the left near the corner.", "hazard_reasoning": "There is a pedestrian carrying a handbag and a milk jug, and walking on the left side of the road, towards the ego-car, because of the parked vehicle. The pedestrian may step into the lane unexpectedly due to limited sidewalk space, so the driver should yield to avoid a collision."}
{"id": "train_07835", "split": "train", "clip_key": "2020-0205-103411_052017_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "052017"}, "frames": ["2020-0205-103411_052017_movie_t-3.jpg", "2020-0205-103411_052017_movie_t-2.jpg", "2020-0205-103411_052017_movie_t-1.jpg", "2020-0205-103411_052017_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with smooth dry pavement and a curbside fence on the right approaches a signalized intersection beneath a pedestrian overpass, and traffic is moderate with a short queue. Directly ahead in the ego left lane, a black minivan is stopped for a red light, constraining the ego car. In the adjacent lane to the left, a black wagon waits slightly ahead in the same direction. Ahead left in the intersection, a white van from the cross street moves left to right as cross traffic. The signal facing the ego direction shows red.", "hazard_reasoning": "There is a black minivan stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to avoid colliding with the stationary vehicle and comply with the red signal."}
{"id": "train_07836", "split": "train", "clip_key": "2020-0204-150838_074303_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "074303"}, "frames": ["2020-0204-150838_074303_movie_t-3.jpg", "2020-0204-150838_074303_movie_t-2.jpg", "2020-0204-150838_074303_movie_t-1.jpg", "2020-0204-150838_074303_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway in an urban setting runs between high sound walls and concrete barriers, the asphalt looks smooth and traffic is light as the road gently curves right. Ahead in the ego lane, a semi truck drives away from the ego car at a steady pace, effectively setting the ego vehicle's speed. The adjacent right lane stays clear with no vehicles alongside or merging. An overhead gantry spans the roadway and no salient signs, work zones, or hazards are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07837", "split": "train", "clip_key": "2020-0210-101957_039915_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "039915"}, "frames": ["2020-0210-101957_039915_movie_t-3.jpg", "2020-0210-101957_039915_movie_t-2.jpg", "2020-0210-101957_039915_movie_t-1.jpg", "2020-0210-101957_039915_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes runs between apartment buildings; the surface is smooth and traffic is light to moderate, with a separate oncoming carriageway to the right behind a guardrail. A green truck in the left lane ahead of the ego vehicle drives away in the same direction, holding a steady course and not entering the ego lane. Farther ahead, a white bus continues straight in the flow, remaining in the left lane and gradually receding, so it does not affect the ego lane. On the right, oncoming cars travel steadily on the opposite roadway, separated by the barrier and not interacting with the ego vehicle. A roadside sign on the left shows a 50 speed limit.", "hazard_reasoning": "There is a green truck driving in the left lane, away from the ego car. As this vehicle is traveling adjacent to your lane and may merge unexpectedly, maintain caution."}
{"id": "train_07838", "split": "train", "clip_key": "titan_clip_1221_000480_movie", "source": {"subset": "titan", "scenario": "clip_1221", "frame": "000480"}, "frames": ["titan_clip_1221_000480_movie_t-3.jpg", "titan_clip_1221_000480_movie_t-2.jpg", "titan_clip_1221_000480_movie_t-1.jpg", "titan_clip_1221_000480_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban street with high-rise buildings has a single narrow undivided lane, smooth pavement, and light traffic; several vans parked along the right curb reduce the usable width. On the right ahead, a pedestrian wearing a cap and brown pants walks out from behind a parked white van into the ego vehicle's path, entering the lane and constraining its pace. A pale green minivan is parked on the right in the near foreground, and another white van stands farther ahead, leaving limited space to pass.", "hazard_reasoning": "There is a pedestrian wearing a cap and brown pants, who is walking out from behind a parked white van, on the right side of the street, in the ego lane. The pedestrian is emerging from the blind spot created by the parked van, so the driver should carefully manoeuvre to avoid a collision."}
{"id": "train_07839", "split": "train", "clip_key": "2020-0204-150838_048045_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "048045"}, "frames": ["2020-0204-150838_048045_movie_t-3.jpg", "2020-0204-150838_048045_movie_t-2.jpg", "2020-0204-150838_048045_movie_t-1.jpg", "2020-0204-150838_048045_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy, slow traffic, with several same-direction lanes bordered by a right-side fence. A hatchback directly ahead in the ego lane slows in stop-and-go congestion, constraining the ego vehicle's pace. A blue box truck travels slightly ahead in the lane to the left at a steady crawl, limiting space to merge left. Farther ahead, several small trucks and vans in adjacent lanes inch forward, maintaining the queue ahead. Overhead direction boards indicate straight-ahead lanes and right-turn lanes to the right.", "hazard_reasoning": "There is a white hatchback slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The white hatchback's reduced speed due to congestion means the driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_07840", "split": "train", "clip_key": "2020-0228-150133_004498_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "004498"}, "frames": ["2020-0228-150133_004498_movie_t-3.jpg", "2020-0228-150133_004498_movie_t-2.jpg", "2020-0228-150133_004498_movie_t-1.jpg", "2020-0228-150133_004498_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban street with two lanes in the same direction, no median, and smooth dry pavement sees slow, bunched traffic. A large white box truck is stopped directly ahead in the ego lane, blocking the lane and constraining the ego car's pace. In the adjacent right lane slightly ahead, another white truck moves slowly, limiting chances to merge around the stopped vehicle. Farther ahead along the right side, additional trucks queue near the curb, contributing to the congestion. A fenced sidewalk lines the left and tall buildings line the right, with no salient signals or posted speeds visible.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The stopped truck blocks the view ahead and could lead to a rear-end collision, so the driver should stop immediately."}
{"id": "train_07841", "split": "train", "clip_key": "2020-0207-101955_004479_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "004479"}, "frames": ["2020-0207-101955_004479_movie_t-3.jpg", "2020-0207-101955_004479_movie_t-2.jpg", "2020-0207-101955_004479_movie_t-1.jpg", "2020-0207-101955_004479_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban three-lane arterial in a commercial district has smooth pavement and no median, and traffic is heavy, queuing at a signalized intersection ahead. A white truck directly ahead in the ego lane is stopped at the zebra crossing because of congestion ahead, holding the ego vehicle. On the left sidewalk, pedestrians wait behind guardrails near the crosswalk without entering the roadway. In the adjacent right lanes, a black taxi and a silver van creep forward in the same direction beside the queue, moving slightly faster than the ego lane.", "hazard_reasoning": "There is a white truck that has stopped in front of the ego car in the ego lane because of traffic congestion ahead. The driver should stop to avoid a collision with this halted vehicle and maintain a safe following distance."}
{"id": "train_07842", "split": "train", "clip_key": "titan_clip_1351_000516_movie", "source": {"subset": "titan", "scenario": "clip_1351", "frame": "000516"}, "frames": ["titan_clip_1351_000516_movie_t-3.jpg", "titan_clip_1351_000516_movie_t-2.jpg", "titan_clip_1351_000516_movie_t-1.jpg", "titan_clip_1351_000516_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban street with one lane each way, a double yellow centerline, and smooth pavement climbs gently toward an underpass, and traffic remains light. Ahead in the ego lane, a cyclist in a black T-shirt rides along the left curb away from the car, and the ego vehicle follows behind at the cyclist's pace. On the right side, a pedestrian walks away along the edge of the oncoming lane beside a parked white flatbed truck, reducing clearance near the centerline. The truck stays stationary on the oncoming shoulder with cargo in its bed, serving as a roadside obstacle. No traffic signals are apparent.", "hazard_reasoning": "A cyclist wearing a black t-shirt is cycling on the left side of the road, away from the ego car. The cyclist may drift into the vehicle's path; carefully manoeuvre around the cyclist to maintain safe clearance."}
{"id": "train_07843", "split": "train", "clip_key": "2020-0214-145407_003026_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "003026"}, "frames": ["2020-0214-145407_003026_movie_t-3.jpg", "2020-0214-145407_003026_movie_t-2.jpg", "2020-0214-145407_003026_movie_t-1.jpg", "2020-0214-145407_003026_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs under an elevated structure, with three same-direction lanes and a low planted median separating oncoming traffic; the pavement is dry and traffic flows at a moderate, steady pace while the signal ahead shows green. A white truck in the right lane draws ahead along the ego car's right, driving away from the ego vehicle while holding its lane. A white van ahead in the ego lane continues straight toward the intersection at a steady speed, loosely setting the ego vehicle's pace. On the left sidewalk beside a fenced work area, a pedestrian walks parallel to the road near the curb without entering the carriageway.", "hazard_reasoning": "There is a white truck in the right lane, driving away from the ego car. Because the parked white van obstructs the view of the right lane, other vehicles or sudden movements may appear unexpectedly, so the driver should be aware."}
{"id": "train_07844", "split": "train", "clip_key": "2020-0210-155354_007761_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "007761"}, "frames": ["2020-0210-155354_007761_movie_t-3.jpg", "2020-0210-155354_007761_movie_t-2.jpg", "2020-0210-155354_007761_movie_t-1.jpg", "2020-0210-155354_007761_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the stopped vehicle", "environment_perception": "An urban commercial street with one lane each way and no physical median is shown, the pavement slightly worn and traffic heavy and stop-and-go. In the left ego lane ahead, a white car is stopped amid a long queue because of congestion, setting the pace for the ego vehicle. Farther ahead, more same-direction cars queue and creep forward, keeping the lane blocked. In the opposite lane, an oncoming stream including a green kei van and a silver minivan approaches steadily while remaining separated by the center line.", "hazard_reasoning": "There is a white sedan stopped in the left lane, because of traffic congestion. The stationary vehicle blocks the travel lane, posing a risk of collision if not anticipated, so the driver should carefully manoeuvre around it."}
{"id": "train_07845", "split": "train", "clip_key": "2020-0213-143552_005721_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "005721"}, "frames": ["2020-0213-143552_005721_movie_t-3.jpg", "2020-0213-143552_005721_movie_t-2.jpg", "2020-0213-143552_005721_movie_t-1.jpg", "2020-0213-143552_005721_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban multi-lane arterial with no physical median and a green-painted bike lane on the left has dry, smooth pavement and light, steady traffic. Ahead along the left curb, a black box truck is stopped with its rear open while being unloaded, occupying the bike lane and sitting close to the ego lane. On the right side of the roadway, several trucks and vans form the oncoming stream, moving toward the camera in their lanes without encroaching across the center lines. Farther ahead in the same direction, a white delivery vehicle proceeds steadily, leaving the ego lane generally clear aside from the unloading truck at the curb.", "hazard_reasoning": "There is a black truck stopped on the left side of the road, because it is being unloaded. It reduces available lane width and poses a collision risk, so the driver should carefully manoeuvre around it to maintain safety."}
{"id": "train_07846", "split": "train", "clip_key": "titan_clip_429_000204_movie", "source": {"subset": "titan", "scenario": "clip_429", "frame": "000204"}, "frames": ["titan_clip_429_000204_movie_t-3.jpg", "titan_clip_429_000204_movie_t-2.jpg", "titan_clip_429_000204_movie_t-1.jpg", "titan_clip_429_000204_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Yield to the cyclist.", "environment_perception": "An urban narrow two-way street with one lane per direction and no median runs between midrise buildings; the pavement is good and traffic is slow-moving due to constrained space and parked cars. A silver sedan directly ahead in the left ego lane rolls slowly and sets the pace. Farther ahead, a cyclist crosses in front of the ego car toward the right side to get around a parked vehicle, briefly occupying the travel lane. Oncoming cars move cautiously along the opposite lane, leaving a tight corridor. A pedestrian walks along the right curb ahead but stays out of the roadway.", "hazard_reasoning": "The cyclist is crossing the street in front of the ego car to the right side because of the parked vehicle. Yielding is necessary because the cyclist is moving into the roadway to avoid the parked car and may enter the path of the ego-vehicle."}
{"id": "train_07847", "split": "train", "clip_key": "titan_clip_1165_000300_movie", "source": {"subset": "titan", "scenario": "clip_1165", "frame": "000300"}, "frames": ["titan_clip_1165_000300_movie_t-3.jpg", "titan_clip_1165_000300_movie_t-2.jpg", "titan_clip_1165_000300_movie_t-1.jpg", "titan_clip_1165_000300_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked SUV", "environment_perception": "An urban commercial street with trees and shops lines both sides of a two-way single-lane road with smooth pavement and light traffic; parked vehicles narrow the carriageway. Ahead on the left curb, a white mid-SUV is parked in front of the ego-car. Farther ahead near the center-right, a white three-wheeled delivery scooter travels away at low speed, likely to constrain the ego vehicle's pace. A pedestrian stands on the left sidewalk beside a bicycle, waiting and not stepping into the roadway.", "hazard_reasoning": "There is a white mid-SUV parked, on the left side of the road, in front of the ego-car. The parked SUV reduces the available lane width and may force the driver to adjust course, so the driver should carefully manoeuvre around it to maintain safe clearance."}
{"id": "train_07848", "split": "train", "clip_key": "2020-0205-152530_046323_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "046323"}, "frames": ["2020-0205-152530_046323_movie_t-3.jpg", "2020-0205-152530_046323_movie_t-2.jpg", "2020-0205-152530_046323_movie_t-1.jpg", "2020-0205-152530_046323_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated bridge with two-lane one-way traffic runs between high-rise buildings, bounded by concrete barriers and overhead frames; the asphalt looks smooth with expansion joints and traffic is light and steady. A white truck drives ahead in the ego lane, moving away from the camera and loosely setting the pace. To the right, a black SUV slightly ahead in the adjacent lane continues straight at a similar speed without signaling, posing no immediate interaction. Farther ahead in the right lane, a white car proceeds in the same direction, gradually pulling away. No signals or notable signage are visible, and no pedestrians or cyclists appear.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The leading truck may brake unexpectedly, so you should follow the vehicle ahead at a safe distance."}
{"id": "train_07849", "split": "train", "clip_key": "titan_clip_543_000162_movie", "source": {"subset": "titan", "scenario": "clip_543", "frame": "000162"}, "frames": ["titan_clip_543_000162_movie_t-3.jpg", "titan_clip_543_000162_movie_t-2.jpg", "titan_clip_543_000162_movie_t-1.jpg", "titan_clip_543_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian pushing trolley", "environment_perception": "A narrow urban street with mid-rise buildings and smooth pavement lacks a centerline and carries light traffic, with only the ego vehicle moving. Parked cars and small signboards line the right shoulder, slightly narrowing the usable lane. Far ahead in the middle of the roadway, a pedestrian in a blue T-shirt pushes a trolley slowly toward the right side without a pedestrian crosswalk, occupying the ego path and temporarily constraining its progress. No traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt, pushing a trolley in the middle of the road towards the right side of the road, because there is no pedestrian crosswalk. The pedestrian's unpredictable movement across lanes poses a collision risk, so the driver should be aware and adjust speed or course accordingly."}
{"id": "train_07850", "split": "train", "clip_key": "2020-0212-102546_092135_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "092135"}, "frames": ["2020-0212-102546_092135_movie_t-3.jpg", "2020-0212-102546_092135_movie_t-2.jpg", "2020-0212-102546_092135_movie_t-1.jpg", "2020-0212-102546_092135_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway ramp with a single marked lane runs between tall sound walls and guardrails, the pavement dry and smooth, and traffic flowing steadily. A white van drives ahead in the ego lane and gradually pulls away, effectively setting the pace for the ego vehicle. Several cars are visible farther ahead in the same direction, moving steadily and keeping a consistent gap, which limits overall speed. A parallel roadway sits to the right behind a guardrail with no nearby vehicles, and there are no signals or unusual signs influencing the scene.", "hazard_reasoning": "There is a white van driving in front of the ego car, in the ego lane, away from the ego car. The lead van limits your view of the upcoming right curve, so following it closely helps anticipate any sudden slowdowns or unseen hazards."}
{"id": "train_07851", "split": "train", "clip_key": "titan_clip_1175_000450_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1175_000450_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1175_000450_movie_t-3_augB1.jpg", "titan_clip_1175_000450_movie_t-2_augB1.jpg", "titan_clip_1175_000450_movie_t-1_augB1.jpg", "titan_clip_1175_000450_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban construction area confines a narrow unmarked lane with worn pavement, lined by white-and-green barriers and orange cones, and the road curves slightly right; there is no motor traffic. Directly ahead in the ego lane, a pedestrian walks toward the vehicle, occupying the path. On the right beside the cones, another pedestrian moves diagonally toward the lane and may step into the ego path. Farther ahead near the right fence, a third pedestrian walks away along the edge without encroaching. A round prohibition sign is mounted on the left, and the worksite barriers limit visibility.", "hazard_reasoning": "There is a pedestrian in front of the ego car, wearing black pants and a white shirt, walking toward the ego car. The pedestrian is crossing the vehicle's path, so the driver should slow down to maintain a safe distance."}
{"id": "train_07852", "split": "train", "clip_key": "2020-0220-102630_035722_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "035722"}, "frames": ["2020-0220-102630_035722_movie_t-3.jpg", "2020-0220-102630_035722_movie_t-2.jpg", "2020-0220-102630_035722_movie_t-1.jpg", "2020-0220-102630_035722_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial with no physical median stretches ahead on smooth pavement, and traffic flows at a moderate pace. A black van in the ego lane ahead drives away from the ego vehicle, maintaining speed and setting the following distance. In the lane to the right, a white sedan and another car travel slightly faster and pass ahead, remaining parallel without merging. Oncoming vehicles stream past in the right-hand lanes with only painted lines separating directions. A distant overhead signalized intersection is visible, and guardrails border busy sidewalks lined with pedestrians.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car. The driver should maintain safe following distance and be ready to follow the vehicle ahead to avoid collision if it slows or stops unexpectedly."}
{"id": "train_07853", "split": "train", "clip_key": "titan_clip_280_001104_movie", "source": {"subset": "titan", "scenario": "clip_280", "frame": "001104"}, "frames": ["titan_clip_280_001104_movie_t-3.jpg", "titan_clip_280_001104_movie_t-2.jpg", "titan_clip_280_001104_movie_t-1.jpg", "titan_clip_280_001104_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with one lane in each direction and no median runs between buildings; the pavement is smooth and traffic is light with no vehicles ahead or oncoming. A pedestrian just ahead on the right stands near a loading area by the curb, while another worker remains at the curb on the right, moving a cart among stacked boxes and intermittently edging toward the roadway, limiting passing space. A continuous row of orange traffic cones lines the left edge, indicating a pedestrian walkway and effectively narrowing the usable lane, while the boxed goods and carts on the right create additional roadside obstacles.", "hazard_reasoning": "There is a traffic cone on the left side of the road indicating a pedestrian walkway. The cone warns of potential pedestrian crossing, so the driver should slow down to watch for people entering the roadway."}
{"id": "train_07854", "split": "train", "clip_key": "titan_clip_521_000198_movie", "source": {"subset": "titan", "scenario": "clip_521", "frame": "000198"}, "frames": ["titan_clip_521_000198_movie_t-3.jpg", "titan_clip_521_000198_movie_t-2.jpg", "titan_clip_521_000198_movie_t-1.jpg", "titan_clip_521_000198_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian in crosswalk", "environment_perception": "An urban two-way street with no centerline approaches a zebra crosswalk, the concrete surface slightly worn, and traffic is light with no moving vehicles. Ahead in the ego lane at the crosswalk, a pedestrian carrying an umbrella and wearing a white shirt crosses from right to left, occupying the path and constraining the vehicle to wait. Just ahead of them, another umbrella-carrying pedestrian continues leftward across the same crosswalk in front of the car. Farther ahead on the left side, a person walks toward the crosswalk along the curb and may enter the lane next. A blue pedestrian-crossing sign and a no-parking sign are visible on the left, and bicycles and bollards line the sidewalk edges.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and wearing a white shirt, crossing the street at a pedestrian crosswalk, from the right side of the street to the left side. The driver should yield because the pedestrian is actively crossing on the marked crosswalk ahead."}
{"id": "train_07855", "split": "train", "clip_key": "2020-0228-102841_024397_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "024397"}, "frames": ["2020-0228-102841_024397_movie_t-3.jpg", "2020-0228-102841_024397_movie_t-2.jpg", "2020-0228-102841_024397_movie_t-1.jpg", "2020-0228-102841_024397_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban street with two same-direction lanes and no median runs between tall buildings; the pavement is dry and smooth, and traffic is heavy and slow as vehicles queue toward a signalized intersection under bright sun glare. A black motorcycle is stopped directly ahead in the ego lane because congestion ahead blocks the lane. To the right, a red hatchback and several vans form a slow-moving queue in the adjacent lane, constraining the overall pace. On the left sidewalk, a couple of pedestrians walk near the crosswalk but do not enter the roadway. Overhead traffic lights control the junction ahead.", "hazard_reasoning": "A black motorcycle stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver must stop to avoid colliding with the stationary motorcycle directly ahead due to the congestion."}
{"id": "train_07856", "split": "train", "clip_key": "2020-0220-102630_082243_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "082243"}, "frames": ["2020-0220-102630_082243_movie_t-3.jpg", "2020-0220-102630_082243_movie_t-2.jpg", "2020-0220-102630_082243_movie_t-1.jpg", "2020-0220-102630_082243_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego vehicle's direction runs through mid-rise buildings, with smooth asphalt and no physical divider visible; traffic is moderate and flowing steadily. A white van directly ahead in the left ego lane moves away as the stream advances, creating a gradually increasing gap. To the right, a silver hatchback in the adjacent lane travels slightly faster and continues straight without signaling, not impeding the ego vehicle. Farther ahead in the right lane, another car proceeds in line with traffic but does not interact with the ego path. Parked vans line the left curb near a side street, reducing shoulder space but remaining clear of the lane.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car, because traffic ahead is moving. The driver should follow the vehicle ahead to maintain safe distance and adapt to the flowing traffic."}
{"id": "train_07857", "split": "train", "clip_key": "2020-0205-103411_054351_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "054351"}, "frames": ["2020-0205-103411_054351_movie_t-3.jpg", "2020-0205-103411_054351_movie_t-2.jpg", "2020-0205-103411_054351_movie_t-1.jpg", "2020-0205-103411_054351_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban arterial with three same-direction lanes has smooth pavement and moderate traffic queued at a signal. A black van directly ahead in the ego lane is stopped because the traffic light ahead shows red, holding the ego vehicle. In the right lane a red pickup truck waits slightly ahead at the same stop, remaining stationary in parallel. In the left lane a dark wagon ahead slows to a stop, aligning with the queue. A roadside guardrail lines the right edge near a gas station, and tall buildings surround the junction.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The stopped van indicates that vehicles must halt at the red light to avoid a collision and comply with traffic signals."}
{"id": "train_07858", "split": "train", "clip_key": "2020-0203-114632_056483_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "056483"}, "frames": ["2020-0203-114632_056483_movie_t-3.jpg", "2020-0203-114632_056483_movie_t-2.jpg", "2020-0203-114632_056483_movie_t-1.jpg", "2020-0203-114632_056483_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the bus immediately", "environment_perception": "An urban multilane road approaches a junction with a gore area; a guardrail and an elevated roadway line the left, the pavement is smooth, and traffic moves slowly. A green bus is stopped directly ahead in the ego lane, holding the lane and constraining the ego vehicle's pace. To the right, a white box truck in the adjacent lane creeps forward past the bus, occupying the space beside the ego car and limiting an immediate lane change. On the left shoulder behind the guardrail, several pedestrians wait at a bus stop, remaining clear of the roadway. Overhead directional signs are visible, with no signal aspect in view.", "hazard_reasoning": "There is a green bus stopped in front of the ego car, in the ego lane. The stopped bus blocks your lane and you must stop to avoid a collision."}
{"id": "train_07859", "split": "train", "clip_key": "titan_clip_1021_000390_movie", "source": {"subset": "titan", "scenario": "clip_1021", "frame": "000390"}, "frames": ["titan_clip_1021_000390_movie_t-3.jpg", "titan_clip_1021_000390_movie_t-2.jpg", "titan_clip_1021_000390_movie_t-1.jpg", "titan_clip_1021_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban two-way street runs straight between buildings, with patched asphalt and no centerline, and traffic is light with no moving vehicles ahead or oncoming. The ego car proceeds along the left side. On the left ahead, a pedestrian wearing a cap, a gray T-shirt, and black pants walks toward the ego car along the roadside, and may edge into the travel path. Parked cars line the right curb, including one near the foreground that protrudes slightly, reducing clearance and constraining the ego line. A traffic cone and dense shrubbery crowd the left edge, and no notable signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a cap, a gray t-shirt, and black pants, walking on the left side of the road toward the ego car. The pedestrian's trajectory may intersect the vehicle's lane, so the driver should be aware of their presence to avoid a potential collision."}
{"id": "train_07860", "split": "train", "clip_key": "titan_clip_45_000576_movie", "source": {"subset": "titan", "scenario": "clip_45", "frame": "000576"}, "frames": ["titan_clip_45_000576_movie_t-3.jpg", "titan_clip_45_000576_movie_t-2.jpg", "titan_clip_45_000576_movie_t-1.jpg", "titan_clip_45_000576_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban shopping street with a very narrow single-lane roadway has no median and uses block pavers in good condition; vehicle traffic is light while pedestrian activity is moderate. On the left side close ahead, a pedestrian wearing black pants, a gray blazer, and carrying a handbag walks away from the ego vehicle along the lane edge, remaining near the path. Farther ahead in the center of the lane, two pedestrians walk away in the travel path, constraining the available space for the ego vehicle. To the right beside storefronts, a man stands at the curb and may step into the lane. Parked bicycles, an orange cone, and a small dark car stopped on the left further narrow the corridor.", "hazard_reasoning": "There is a pedestrian wearing black pants, a gray blazer, and carrying a handbag, walking on the left side of the road, away from the ego car. The pedestrian's proximity to the driving path requires careful manoeuvre to maintain safe clearance and avoid collision with them."}
{"id": "train_07861", "split": "train", "clip_key": "2020-0214-102601_054512_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "054512"}, "frames": ["2020-0214-102601_054512_movie_t-3.jpg", "2020-0214-102601_054512_movie_t-2.jpg", "2020-0214-102601_054512_movie_t-1.jpg", "2020-0214-102601_054512_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane road runs beneath an elevated expressway, with three same-direction lanes, a right-side guardrail and pillars, smooth asphalt, and light to moderate flow toward a distant intersection. A yellow concrete mixer truck is just ahead to the left, moving steadily parallel to the ego lane. A dark sedan farther ahead in the ego lane continues at a moderate pace toward the junction, keeping a safe gap. In the right lane, a small truck and several cars proceed under the structure without lane changes and do not impede the ego path. Overhead traffic signals are visible ahead, and the columns along the right create a narrow shoulder.", "hazard_reasoning": "No immediate hazards detected; driving conditions are stable and no warnings needed."}
{"id": "train_07862", "split": "train", "clip_key": "titan_clip_116_000534_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_116_000534_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_116_000534_movie_t-3_augB1.jpg", "titan_clip_116_000534_movie_t-2_augB1.jpg", "titan_clip_116_000534_movie_t-1_augB1.jpg", "titan_clip_116_000534_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban one-lane street runs between tall buildings, the pavement looks smooth and traffic is light. Two pedestrians in white shirts and black pants are in the middle of the road ahead, crossing from the right toward the left side of the lane, directly occupying the ego vehicle's path. A small white car continues farther ahead in the same direction at a steady pace. A white box truck stands along the right curb near the camera, narrowing the usable lane.", "hazard_reasoning": "There are two pedestrians in the middle of the road, wearing black pants and a white shirt, crossing to the left side of the lane. These pedestrians are crossing ahead in your lane, so you should slow down to avoid a potential collision."}
{"id": "train_07863", "split": "train", "clip_key": "2020-0218-103119_056562_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "056562"}, "frames": ["2020-0218-103119_056562_movie_t-3.jpg", "2020-0218-103119_056562_movie_t-2.jpg", "2020-0218-103119_056562_movie_t-1.jpg", "2020-0218-103119_056562_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane one-way road runs beneath an elevated structure, with a left curb and a right-side guardrail; the pavement is slightly worn and traffic is heavy and slow. A gray box truck directly ahead in the ego vehicle's left lane decelerates to a crawl, constraining the ego car because of congestion ahead. In the adjacent right lane, another large box truck slightly ahead proceeds slowly in the same direction, remaining in lane and limiting any chance to pass. A black SUV to the right of the ego vehicle travels alongside at low speed in the right lane, affecting lateral space. No salient signals or unusual signs are visible, and there is no oncoming traffic.", "hazard_reasoning": "There is a gray truck slowing down in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_07864", "split": "train", "clip_key": "2020-0228-150133_007357_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "007357"}, "frames": ["2020-0228-150133_007357_movie_t-3.jpg", "2020-0228-150133_007357_movie_t-2.jpg", "2020-0228-150133_007357_movie_t-1.jpg", "2020-0228-150133_007357_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with a yellow centerline curves gently right; the pavement looks dry and smooth and traffic is light. A white box truck ahead in the ego lane slows as it approaches a red traffic signal at the next intersection, constraining the ego vehicle's pace. A white van is stopped at the left curb just ahead of the camera, close to the lane edge but outside the travel lane. A small car travels toward the camera in the oncoming lane farther ahead through the bend. A 40 speed marking is painted on the road.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of a red traffic light ahead. The slowing vehicle indicates an upcoming stop which requires you to reduce speed to maintain safe distance and avoid collision."}
{"id": "train_07865", "split": "train", "clip_key": "titan_clip_625_000078_movie", "source": {"subset": "titan", "scenario": "clip_625", "frame": "000078"}, "frames": ["titan_clip_625_000078_movie_t-3.jpg", "titan_clip_625_000078_movie_t-2.jpg", "titan_clip_625_000078_movie_t-1.jpg", "titan_clip_625_000078_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked SUV", "environment_perception": "An urban multi-lane two-way street with smooth asphalt and no median runs between dense shops and mid-rise buildings, and traffic is light to moderate with steady flow. A small silver van ahead in the ego lane cruises at a constant speed, lightly setting the pace. Cars in the adjacent right same-direction lane move past more quickly, limiting immediate space for a lane change. Oncoming vehicles in the right half of the roadway, including a silver hatchback near the camera, approach and pass in their lane while remaining separated by the center line. Several vehicles are parked along the right curb.", "hazard_reasoning": "There is a silver SUV parked on the left side of the road, in the ego lane. The parked SUV occupies the driving lane, requiring the driver to carefully manoeuvre around it to maintain safe passage."}
{"id": "train_07866", "split": "train", "clip_key": "titan_clip_1002_000540_movie", "source": {"subset": "titan", "scenario": "clip_1002", "frame": "000540"}, "frames": ["titan_clip_1002_000540_movie_t-3.jpg", "titan_clip_1002_000540_movie_t-2.jpg", "titan_clip_1002_000540_movie_t-1.jpg", "titan_clip_1002_000540_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian entering vehicle", "environment_perception": "A narrow urban street with a single moving lane and curbside parking has smooth dry pavement and light same-direction traffic. A small utility cart proceeds ahead in the ego lane at low speed, setting the pace. On the left near the ego vehicle, a pedestrian wearing all gray is entering his parked car and stands close to the travel lane, reducing clearance. Farther along the left, a white mini-truck and other cars remain parked, narrowing the lane. On the right at a cone-lined entrance to an underground parking facility, a pedestrian waits on the sidewalk without stepping into the lane.", "hazard_reasoning": "There is a pedestrian wearing all gray, entering his vehicle parked on the left side of the road. The driver should slow down because the pedestrian may step into the lane unexpectedly."}
{"id": "train_07867", "split": "train", "clip_key": "2020-0205-103411_109693_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "109693"}, "frames": ["2020-0205-103411_109693_movie_t-3.jpg", "2020-0205-103411_109693_movie_t-2.jpg", "2020-0205-103411_109693_movie_t-1.jpg", "2020-0205-103411_109693_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with several same-direction lanes has dry, smooth pavement and light, steady traffic; no center divider is clearly visible. A white van ahead in the ego lane drives away from the camera at a steady speed, remaining centered in the lane. A white hatchback slightly ahead to the left in the adjacent lane travels parallel at similar speed without encroaching on the ego lane. Farther ahead in the right lanes, a few cars continue straight in the same direction with wide gaps and no visible lane changes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07868", "split": "train", "clip_key": "2020-0204-150838_060754_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "060754"}, "frames": ["2020-0204-150838_060754_movie_t-3.jpg", "2020-0204-150838_060754_movie_t-2.jpg", "2020-0204-150838_060754_movie_t-1.jpg", "2020-0204-150838_060754_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of merging bus ahead", "environment_perception": "An urban multi-lane roadway runs under an elevated expressway with smooth asphalt and moderate same-direction traffic; no oncoming lanes are visible. A silver bus ahead of the ego car in the left lane moves to the right lane, briefly slowing the ego vehicle as it merges. A large box truck travels alongside in the right lane slightly ahead, so the bus merges in front of it and then continues forward. Another truck farther ahead in the right lane proceeds at a steady pace, shaping the flow in that lane. Pedestrians walk along the fenced sidewalk by a storefront on the left, separated from the roadway and not interacting with traffic.", "hazard_reasoning": "There is a silver bus in front of the ego car, changing to the right lane. The bus's merging movement could reduce available space and necessitate evasive maneuvers, so the driver should be aware of its position and adjust accordingly."}
{"id": "train_07869", "split": "train", "clip_key": "2020-0205-103411_093341_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "093341"}, "frames": ["2020-0205-103411_093341_movie_t-3.jpg", "2020-0205-103411_093341_movie_t-2.jpg", "2020-0205-103411_093341_movie_t-1.jpg", "2020-0205-103411_093341_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with dry, well-marked pavement and no physical median approaches a signalized intersection, and traffic is moderate but slowing. A small white flatbed truck directly ahead in the ego lane decelerates for the red light, constraining the ego-car's pace. A white hatchback to the left runs slightly ahead at low speed as it queues for the signal, limiting room to change lanes. Farther ahead in the adjacent left lane, several cars are also slowing into the queue. The rightmost lane functions as a right-turn lane, where a van ahead moves cautiously toward the junction. Overhead traffic lights show red above the intersection, and mid-rise buildings line both sides.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego-car, because of a red traffic light ahead. The driver should slow down to maintain a safe distance and avoid a rear-end collision under these changing signal conditions."}
{"id": "train_07870", "split": "train", "clip_key": "titan_clip_585_000540_movie", "source": {"subset": "titan", "scenario": "clip_585", "frame": "000540"}, "frames": ["titan_clip_585_000540_movie_t-3.jpg", "titan_clip_585_000540_movie_t-2.jpg", "titan_clip_585_000540_movie_t-1.jpg", "titan_clip_585_000540_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban two-way street with narrow lanes and no median, on slightly worn asphalt, carries light to moderate flow that slows near a right-side junction. A large blue delivery truck immediately ahead in the ego lane is stopped by the left curb, constraining the ego vehicle's pace and narrowing the passage. On the right, an oncoming cyclist wearing a green T-shirt and towing a cart pedals toward the ego car from the side street and may enter the ego lane. Farther ahead in the same direction, another truck moves slowly along the lane, adding to the delay. Pedestrians stay on the sidewalk, and no clear traffic signals are visible.", "hazard_reasoning": "There is a cyclist wearing a green t-shirt, pulling a green cart, cycling on the right side of the road, towards the ego car. The cyclist is approaching the ego vehicle's lane and may be difficult to see due to the parked truck, so the driver should manoeuvre carefully around them to avoid a collision."}
{"id": "train_07871", "split": "train", "clip_key": "2020-0225-102455_004972_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "004972"}, "frames": ["2020-0225-102455_004972_movie_t-3.jpg", "2020-0225-102455_004972_movie_t-2.jpg", "2020-0225-102455_004972_movie_t-1.jpg", "2020-0225-102455_004972_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be cautious of cyclist on left side", "environment_perception": "An urban arterial with two same-direction lanes has smooth pavement and a red side lane separated by bollards; traffic is moderate and moves steadily. A dark dump truck ahead in the ego lane continues straight at a modest speed, setting the pace. A large white box truck in the adjacent right lane runs alongside slightly ahead, limiting an immediate lane change. On the left edge near the curb, a cyclist wearing a brown coat and helmet rides a red bicycle away from the ego car with a black cargo box, hugging the roadside because there is no bicycle lane. An overhead blue sign points toward Koenji, Shinjuku, and Sendagaya.", "hazard_reasoning": "There is a cyclist wearing a brown coat, a helmet, and a black cargo box, and riding a red bicycle away from the ego car, on the left side of the road, because there is no bicycle lane. Drivers should be cautious because the cyclist may swerve into traffic or slow unexpectedly without a dedicated lane."}
{"id": "train_07872", "split": "train", "clip_key": "2020-0131-103016_027741_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "027741"}, "frames": ["2020-0131-103016_027741_movie_t-3.jpg", "2020-0131-103016_027741_movie_t-2.jpg", "2020-0131-103016_027741_movie_t-1.jpg", "2020-0131-103016_027741_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban divided arterial with two same-direction lanes runs beside a raised median and trees, the pavement smooth and traffic moderate with steady flow. A white box truck just ahead to the right drifts left and merges into the ego lane from the right lane, moving in front of the ego car and shaping its pace. Farther ahead in the same lane, another light-duty truck continues straight at a similar speed, acting as the lead vehicle. On the opposite carriageway to the right of the median, a single car travels in the oncoming flow and passes by without interaction. Overhead blue direction signs span the roadway in the distance.", "hazard_reasoning": "There is a white truck merging into the ego lane in front of the ego car, from the right lane. The truck's merge reduces available lane space and may require you to adjust speed, so you should slow down to maintain a safe distance."}
{"id": "train_07873", "split": "train", "clip_key": "2020-0220-102630_084868_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "084868"}, "frames": ["2020-0220-102630_084868_movie_t-3.jpg", "2020-0220-102630_084868_movie_t-2.jpg", "2020-0220-102630_084868_movie_t-1.jpg", "2020-0220-102630_084868_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two same-direction lanes and a raised median on the right has smooth pavement and heavy, stop-and-go flow; oncoming traffic moves on the far right beyond the barrier. A white van directly ahead in the ego right lane is stopped because of congestion ahead, holding the ego car. Vehicles in the adjacent left lane, including a black hatchback and a box truck, inch forward beside and ahead of the ego, reinforcing that both lanes are queued. No notable signals are visible, and the median and chevron-marked shoulder appear clear of obstacles.", "hazard_reasoning": "There is a white van stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a collision with the halted van."}
{"id": "train_07874", "split": "train", "clip_key": "titan_clip_1012_000576_movie", "source": {"subset": "titan", "scenario": "clip_1012", "frame": "000576"}, "frames": ["titan_clip_1012_000576_movie_t-3.jpg", "titan_clip_1012_000576_movie_t-2.jpg", "titan_clip_1012_000576_movie_t-1.jpg", "titan_clip_1012_000576_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "An urban shopping street with a single narrow lane and no median runs between buildings; the pavement looks worn and vehicle traffic is light amid heavy foot traffic. The ego-vehicle proceeds toward a side street on the right. A pedestrian in a white T-shirt crosses ahead from the left to the right directly in front of the ego-vehicle, occupying the lane. Another man in dark clothing walks ahead near the center of the lane, moving away and constraining the approach. Along the left curb, several people stand with bicycles beside the rail close to the roadway, while a pedestrian waits on the right corner by the crosswalk. A blue mandatory sign indicates straight or right allowed at the junction, and construction barriers with cones line the right edge.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt crossing the street, in front of the ego car, from the left side to the right. The driver should yield to avoid potential collision with the pedestrian entering the vehicle's path."}
{"id": "train_07875", "split": "train", "clip_key": "titan_clip_606_000378_movie", "source": {"subset": "titan", "scenario": "clip_606", "frame": "000378"}, "frames": ["titan_clip_606_000378_movie_t-3.jpg", "titan_clip_606_000378_movie_t-2.jpg", "titan_clip_606_000378_movie_t-1.jpg", "titan_clip_606_000378_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single narrow lane in each direction rises gently ahead, with no median and fair pavement; traffic is light. Two pedestrians ahead cross midblock from the left to the right, moving through the ego lane and temporarily blocking the path. Two white vans are stopped along the right curb on the oncoming side, and their presence narrows the available space though they remain outside the ego lane. A No Parking sign and several bicycles line the right rail while additional pedestrians stay on the sidewalks.", "hazard_reasoning": "There are two pedestrians crossing the street in the middle of the road, from the left side to the right side. You should slow down because these pedestrians may enter your path unexpectedly and require you to yield to avoid a collision."}
{"id": "train_07876", "split": "train", "clip_key": "titan_clip_318_000198_movie", "source": {"subset": "titan", "scenario": "clip_318", "frame": "000198"}, "frames": ["titan_clip_318_000198_movie_t-3.jpg", "titan_clip_318_000198_movie_t-2.jpg", "titan_clip_318_000198_movie_t-1.jpg", "titan_clip_318_000198_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked car", "environment_perception": "A narrow urban commercial street with no median and smooth asphalt carries light, slow-moving traffic. A white sedan is parked along the left side of the road, narrowing the usable lane near the ego vehicle. Farther ahead in the same direction, a small silver van proceeds slowly near the center of the lane, briefly setting the pace. On the right sidewalk, two pedestrians walk past storefronts, staying on the curb and not approaching the roadway. A bicycle is parked by a pole, and no notable signals or signs are visible.", "hazard_reasoning": "There is a white sedan parked on the left side of the road. Its position reduces the available lane width, so the driver must manoeuvre around it to avoid sideswipe collision."}
{"id": "train_07877", "split": "train", "clip_key": "2020-0131-103016_075902_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "075902"}, "frames": ["2020-0131-103016_075902_movie_t-3.jpg", "2020-0131-103016_075902_movie_t-2.jpg", "2020-0131-103016_075902_movie_t-1.jpg", "2020-0131-103016_075902_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three lanes in the ego direction runs beneath a pedestrian overpass; pavement is smooth and traffic is moderate with steady flow. In the right lane beside and slightly ahead, a white van drives away from the ego car, continuing straight and keeping to its lane. Ahead in the center lane, two box trucks proceed at a constant pace and effectively set the speed for following vehicles, including the ego. Farther ahead in the adjacent right-center lane, a dark SUV slows as it approaches denser traffic, tightening space on that side. Along the left lane near the curb, several cars queue or creep forward, making that lane slower than the middle lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07878", "split": "train", "clip_key": "titan_clip_145_000306_movie", "source": {"subset": "titan", "scenario": "clip_145", "frame": "000306"}, "frames": ["titan_clip_145_000306_movie_t-3.jpg", "titan_clip_145_000306_movie_t-2.jpg", "titan_clip_145_000306_movie_t-1.jpg", "titan_clip_145_000306_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked sedan", "environment_perception": "An urban two-way street with one narrow lane per direction approaches a crosswalk at an unsignalized intersection; pavement is smooth and traffic is light. A worker with a large green cart crosses directly ahead from left to right at walking speed in the crosswalk, occupying the ego lane and dictating the pace. A black sedan is parked on the left side of the road near the junction, narrowing the entry into the lane. At the right edge, the nose of a dark car moves into the intersection ahead across the ego vehicle's front, passing through before the ego car proceeds. No salient traffic signals or speed signs are visible.", "hazard_reasoning": "There is a black sedan parked on the left side of the road. The parked vehicle may restrict lane width and obscure approaching traffic, so the driver should carefully manoeuvre to maintain safe clearance."}
{"id": "train_07879", "split": "train", "clip_key": "2020-0228-150133_027336_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "027336"}, "frames": ["2020-0228-150133_027336_movie_t-3.jpg", "2020-0228-150133_027336_movie_t-2.jpg", "2020-0228-150133_027336_movie_t-1.jpg", "2020-0228-150133_027336_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with two same-direction lanes runs left of a narrow painted median; the pavement is dry and smooth and traffic is moderate with brief compression ahead. A white hatchback directly ahead in the ego lane slows because of congestion, holding the ego car to its pace. In the adjacent left lane, a white minivan slightly ahead continues at a steadier speed alongside, limiting an immediate lane change. On the opposite side of the median, oncoming traffic including a truck and a white van approaches in its lanes without encroaching.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The white hatchback's reduced speed indicates congestion ahead, so you should slow down to maintain a safe following distance."}
{"id": "train_07880", "split": "train", "clip_key": "2020-0207-101955_111922_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "111922"}, "frames": ["2020-0207-101955_111922_movie_t-3.jpg", "2020-0207-101955_111922_movie_t-2.jpg", "2020-0207-101955_111922_movie_t-1.jpg", "2020-0207-101955_111922_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with smooth pavement and flexible bollards separating a left-side lane; traffic in the same direction is heavy and slow. A blue sedan directly ahead in the ego lane slows in a queue because of congestion, constraining the ego car's pace. To the left, a box truck followed by a dump truck proceeds slowly within the bollard-separated lane alongside the ego lane, remaining parallel and not merging. In the right adjacent lane, a white minivan and another blue hatchback travel slightly ahead at similar low speed, staying parallel and not entering the ego path. Overhead blue directional signs are visible, and a concrete barrier lines the far right edge.", "hazard_reasoning": "There is a blue sedan slowing in front of the ego car in the ego lane, because of traffic congestion. The sedan's reduced speed increases the risk of a rear-end collision, so you should slow down to maintain a safe following distance."}
{"id": "train_07881", "split": "train", "clip_key": "2020-0226-140503_085364_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "085364"}, "frames": ["2020-0226-140503_085364_movie_t-3.jpg", "2020-0226-140503_085364_movie_t-2.jpg", "2020-0226-140503_085364_movie_t-1.jpg", "2020-0226-140503_085364_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "A busy urban multi-lane arterial with lanes in both directions and no physical median has dry, smooth pavement and heavy traffic queuing at a signalized intersection. A white hatchback directly ahead in the ego lane slows and comes to a stop for the red light, constraining the ego car's pace. A large cement mixer truck travels alongside in the lane to the left and also queues, reducing lateral space. Perpendicular traffic, including a dark car moving right to left, continues through the junction under its green, while additional vehicles and a box truck are lined up farther ahead past the crosswalk.", "hazard_reasoning": "There is a silver hatchback slowing in front of the ego car in the ego lane, because of a red traffic light ahead. The hatchback's deceleration signals the need to stop to maintain a safe following distance and avoid rear-ending the vehicle."}
{"id": "train_07882", "split": "train", "clip_key": "titan_clip_1182_000576_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1182_000576_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1182_000576_movie_t-3_augB1.jpg", "titan_clip_1182_000576_movie_t-2_augB1.jpg", "titan_clip_1182_000576_movie_t-1_augB1.jpg", "titan_clip_1182_000576_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow two-way urban street with no median and worn asphalt runs straight between buildings; traffic is light and the ego vehicle slows as pedestrians occupy the lane. Ahead in the ego lane, a man wearing black shorts, a white T-shirt, white-and-black shoes, and a backpack walks across the roadway directly in the vehicle's path. Just ahead, several other pedestrians cross from the left to the right side of the street in front of the car, further constraining its lane. Farther ahead, a small white van continues along the street in the same direction at distance. A parked scooter with a person standing beside it sits at the right curb, outside the travel lane.", "hazard_reasoning": "There is a man wearing a pair of black shorts, a white T-shirt, white and black shoes, carrying a backpack, walking in the ego lane. Manoeuvre carefully around the pedestrian to avoid a collision since he is in your driving path."}
{"id": "train_07883", "split": "train", "clip_key": "titan_clip_481_000450_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_481_000450_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_481_000450_movie_t-3_augB1.jpg", "titan_clip_481_000450_movie_t-2_augB1.jpg", "titan_clip_481_000450_movie_t-1_augB1.jpg", "titan_clip_481_000450_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban street with a single lane and no median curves ahead over cobblestone paving, and there is no moving vehicular traffic. A pedestrian wearing a white shirt and black pants, carrying a bag, walks away from the ego car in the middle of the road and occupies the vehicle's path. Farther ahead on the right sidewalk, another pedestrian walks along the curb and stays off the lane. Construction barriers and materials line the left edge while stacked crates sit at the right curb, tightening the corridor without blocking the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a bag, walking in the middle of the road, away from the ego car. The driver should carefully manoeuvre to avoid a collision with the pedestrian."}
{"id": "train_07884", "split": "train", "clip_key": "2020-0207-151349_077824_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "077824"}, "frames": ["2020-0207-151349_077824_movie_t-3.jpg", "2020-0207-151349_077824_movie_t-2.jpg", "2020-0207-151349_077824_movie_t-1.jpg", "2020-0207-151349_077824_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs under an elevated structure with a guardrail and striped buffer on the right, the pavement smooth and traffic moving slowly in multiple same-direction lanes. A brown truck directly ahead in the ego lane slows because congestion builds ahead, holding the ego car to its pace. In the adjacent left lane a white van ahead creeps forward with the queue beside the truck. A dark sedan to the left of the ego vehicle advances alongside in the neighboring lane. Blue direction signs hang overhead, and a traffic signal is visible farther ahead. Pedestrians line the left sidewalk near the intersection.", "hazard_reasoning": "There is a brown truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_07885", "split": "train", "clip_key": "2020-0203-154554_079580_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "079580"}, "frames": ["2020-0203-154554_079580_movie_t-3.jpg", "2020-0203-154554_079580_movie_t-2.jpg", "2020-0203-154554_079580_movie_t-1.jpg", "2020-0203-154554_079580_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop for stopped vehicle ahead", "environment_perception": "An urban, tree-lined two-way road with one lane in each direction and no median has smooth pavement and heavy, slow traffic under low sun. A white hatchback is stopped directly ahead in the ego lane because congestion builds in front, holding the ego vehicle. Farther ahead, additional same-direction cars queue and creep forward toward the intersection area. On the right, an oncoming white truck advances in its lane, followed by a line of oncoming cars, passing without encroaching. Buildings and sidewalk railings line both sides, and no pedestrians or cyclists are visible.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle ahead."}
{"id": "train_07886", "split": "train", "clip_key": "2020-0214-145407_066759_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "066759"}, "frames": ["2020-0214-145407_066759_movie_t-3.jpg", "2020-0214-145407_066759_movie_t-2.jpg", "2020-0214-145407_066759_movie_t-1.jpg", "2020-0214-145407_066759_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a shrub-lined median and smooth pavement carries heavy, slowing traffic as the flow compresses toward a signalized intersection. A white hatchback directly ahead in the ego lane slows toward a stop because the traffic light ahead is red, setting the ego car's pace. A white sedan in the adjacent left lane slightly ahead continues straight in its lane and queues beside the ego vehicle without merging. On the far side of the median, oncoming traffic moves steadily in the opposite direction, separated from the ego path. The distant traffic signal is clearly red above the intersection.", "hazard_reasoning": "There is a white hatchback slowing down in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should slow down to avoid colliding with the decelerating hatchback at the red light."}
{"id": "train_07887", "split": "train", "clip_key": "2020-0218-103119_012587_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "012587"}, "frames": ["2020-0218-103119_012587_movie_t-3.jpg", "2020-0218-103119_012587_movie_t-2.jpg", "2020-0218-103119_012587_movie_t-1.jpg", "2020-0218-103119_012587_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop immediately for the crossing pedestrian.", "environment_perception": "An urban two-way road with one lane in each direction runs straight with no median and smooth pavement, and traffic is light. Approaching a signalized crosswalk, the overhead light facing the ego shows red. Ahead, a pedestrian dressed in black crosses from right to left on the zebra crossing toward the left sidewalk under the red light, occupying the ego vehicle's path. Parked cars line the right curb beyond the crosswalk and remain static.", "hazard_reasoning": "There is a pedestrian wearing all black, crossing at the pedestrian crossing to the left side, because of the red light. The driver must stop to avoid colliding with the crossing pedestrian."}
{"id": "train_07888", "split": "train", "clip_key": "titan_clip_1180_000246_movie", "source": {"subset": "titan", "scenario": "clip_1180", "frame": "000246"}, "frames": ["titan_clip_1180_000246_movie_t-3.jpg", "titan_clip_1180_000246_movie_t-2.jpg", "titan_clip_1180_000246_movie_t-1.jpg", "titan_clip_1180_000246_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each way runs between mid-rise buildings; the pavement is slightly worn and traffic is light as the ego vehicle approaches a zebra crossing with signals. Ahead in the ego lane near the curb, a small box truck is stopped by the crosswalk, narrowing the lane. On the left edge just before it, a cyclist wearing a helmet rides forward and steers right toward the ego lane to pass the parked vehicle, and may enter the ego path. In the opposite lane, a silver car approaches from ahead as oncoming traffic and continues straight.", "hazard_reasoning": "There is a cyclist wearing a helmet and cycling on the left side of the road, toward the ego lane, because of the parked vehicle. The driver should slow down because the cyclist may merge into the ego lane to pass the parked vehicle, creating a potential collision risk."}
{"id": "train_07889", "split": "train", "clip_key": "titan_clip_959_000138_movie", "source": {"subset": "titan", "scenario": "clip_959", "frame": "000138"}, "frames": ["titan_clip_959_000138_movie_t-3.jpg", "titan_clip_959_000138_movie_t-2.jpg", "titan_clip_959_000138_movie_t-1.jpg", "titan_clip_959_000138_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian at crosswalk", "environment_perception": "An urban two-way street with a single narrow lane in each direction and no median appears worn, and traffic is light as the ego vehicle approaches a signalized crosswalk. A white van travels ahead in the same direction near the intersection, moving slowly and setting the pace. From the left, a worker pushes a blue handcart across the crosswalk ahead, continuing toward the ego lane and may enter the path. On the right edge, a pedestrian waits at the crosswalk for the light to change before crossing. Overhead traffic lights are visible at the junction, and a no-entry sign marks a right-side side street. A small truck is stopped on the left curb near the corner.", "hazard_reasoning": "A pedestrian is waiting to cross at a crosswalk at the right side of the street because they are waiting for the light to change. The driver should be aware of the pedestrian's potential movement into the roadway once the signal changes."}
{"id": "train_07890", "split": "train", "clip_key": "2020-0225-145150_016553_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "016553"}, "frames": ["2020-0225-145150_016553_movie_t-3.jpg", "2020-0225-145150_016553_movie_t-2.jpg", "2020-0225-145150_016553_movie_t-1.jpg", "2020-0225-145150_016553_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane intersection comes into view, the pavement dry with red guidance paint as the lanes bend right and traffic is moderate. Ahead in the ego lane, a beige van drives forward along the right-curving path and sets the pace for the ego vehicle. Ahead to the left, a silver hatchback moves into a left side street, diverging from the ego path. On the opposite side, oncoming vehicles including a white box truck and several cars advance through the junction in their lanes without encroaching. Overhead traffic signals control the intersection.", "hazard_reasoning": "There is a beige van driving, in the front of the ego car, in the ego lane. Follow the vehicle ahead to maintain safe distance in case the van slows or stops."}
{"id": "train_07891", "split": "train", "clip_key": "titan_clip_1175_000246_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1175_000246_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1175_000246_movie_t-3_augB1.jpg", "titan_clip_1175_000246_movie_t-2_augB1.jpg", "titan_clip_1175_000246_movie_t-1_augB1.jpg", "titan_clip_1175_000246_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian", "environment_perception": "An urban back street with a single narrow lane curves gently left, lined by construction fencing and orange cones on both sides; the worn pavement and work zone make the corridor tight, and motor traffic is light. A man in a white shirt and dark pants walks in the middle of the lane toward the camera, reportedly talking on a phone, moving directly along the ego vehicle's path and limiting progress. Two other pedestrians ahead keep to the left edge by the cones, walking away in the same direction and remaining outside the lane center. A white truck is stopped at the curb on the right with its mirror and body close to the lane, further squeezing the available space.", "hazard_reasoning": "There is a person on phone, wearing a white shirt with black pant, walking in the middle of the road, walking toward the ego car. The pedestrian's distraction and central position in the lane create a risk of collision unless the driver slows down to allow them to pass safely."}
{"id": "train_07892", "split": "train", "clip_key": "2020-0131-135401_009757_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "009757"}, "frames": ["2020-0131-135401_009757_movie_t-3.jpg", "2020-0131-135401_009757_movie_t-2.jpg", "2020-0131-135401_009757_movie_t-1.jpg", "2020-0131-135401_009757_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with the stopped truck", "environment_perception": "A narrow urban two-way street with one lane in each direction runs between close-set buildings; the pavement looks smooth and traffic is light. A white box truck is stopped directly ahead in the ego lane, blocking the path and holding the ego vehicle. An oncoming silver van moves toward the camera in the opposite lane to the right and passes by the stopped truck. Two pedestrians on the left sidewalk walk forward near the curb alongside the truck. No other notable controls or hazards are evident.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. You should stop because the stopped truck obstructs your view and could cause a collision if you proceed."}
{"id": "train_07893", "split": "train", "clip_key": "2020-0131-135401_011431_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "011431"}, "frames": ["2020-0131-135401_011431_movie_t-3.jpg", "2020-0131-135401_011431_movie_t-2.jpg", "2020-0131-135401_011431_movie_t-1.jpg", "2020-0131-135401_011431_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each way and no median has smooth pavement and light to moderate traffic. Ahead in the ego lane, a white dump truck slows and constrains the ego vehicle's pace. In the oncoming lane to the right, a dark sedan approaches and passes steadily without encroaching on the ego lane. Pedestrians move along the left sidewalk near the hedges, remaining off the roadway. A white van is stopped at the right curb farther ahead, outside the travel lane. Overhead signage shows a 40 speed limit, and a signal gantry is visible at the upcoming intersection.", "hazard_reasoning": "There is a white dump truck slowing in the ego lane. The slowing truck ahead warrants reducing speed to maintain a safe following distance and prevent collision."}
{"id": "train_07894", "split": "train", "clip_key": "titan_clip_1172_000216_movie", "source": {"subset": "titan", "scenario": "clip_1172", "frame": "000216"}, "frames": ["titan_clip_1172_000216_movie_t-3.jpg", "titan_clip_1172_000216_movie_t-2.jpg", "titan_clip_1172_000216_movie_t-1.jpg", "titan_clip_1172_000216_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban shopping street appears narrow and brick-paved with no marked lanes or divider, functioning as a shared space with no visible motor traffic and smooth pavement. Immediately ahead, a pedestrian wearing black pants and a shirt, carrying a handbag, crosses from the right to the left directly in front of the car, occupying the ego lane and constraining its pace. Slightly farther ahead, a man in a white shirt also crosses right to left across the lane, continuing through the vehicle's path. At the right edge, another pedestrian walks leftward near the curb, close to but not entering the lane. No signals or posted speed signs are clearly visible.", "hazard_reasoning": "There is a pedestrian wearing black pants and a shirt, carrying a handbag, and crossing the street, in front of the ego car, from the right side to the left side. The driver should stop to avoid colliding with the pedestrian entering the vehicle's path."}
{"id": "train_07895", "split": "train", "clip_key": "2020-0210-101957_025539_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "025539"}, "frames": ["2020-0210-101957_025539_movie_t-3.jpg", "2020-0210-101957_025539_movie_t-2.jpg", "2020-0210-101957_025539_movie_t-1.jpg", "2020-0210-101957_025539_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes per direction and a wide painted chevron buffer separating oncoming lanes to the right has smooth pavement and moderate flow that slows ahead. In the ego lane, a black hatchback directly in front slows because traffic stacks up farther ahead, constraining the ego vehicle's pace. A cyclist rides along the left curb just ahead, moving slowly near the guardrail and staying within the edge of the ego lane, which limits passing space. To the right, a pedestrian walks across the striped buffer toward the roadway, momentarily approaching the same-direction lanes. An overhead signal is visible in the distance.", "hazard_reasoning": "There is a black hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Therefore, the driver should slow down to match the lower traffic speed and maintain a safe distance from the slowing vehicle ahead."}
{"id": "train_07896", "split": "train", "clip_key": "titan_clip_438_000018_movie", "source": {"subset": "titan", "scenario": "clip_438", "frame": "000018"}, "frames": ["titan_clip_438_000018_movie_t-3.jpg", "titan_clip_438_000018_movie_t-2.jpg", "titan_clip_438_000018_movie_t-1.jpg", "titan_clip_438_000018_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked hatchback", "environment_perception": "An urban commercial two-way street with one narrow lane and no median is paved with interlocking bricks, and traffic flows lightly at low speed. A small white van ahead in the ego lane creeps forward and pauses near people, effectively setting the pace. On the right edge a covered flatbed truck is parked, narrowing the roadway and pushing the path left. Several pedestrians walk along storefronts and a few cross midblock ahead, potentially entering the lane. On the left a silver hatchback is parked for unloading. Portable no-parking signs and traffic cones line the left curb, marking restricted stopping space.", "hazard_reasoning": "There is a silver hatchback parked on the left side of the road, because it is being unloaded. The stationary vehicle reduces the available lane width and blocks sightlines to oncoming traffic, so the driver should carefully manoeuvre around it."}
{"id": "train_07897", "split": "train", "clip_key": "2020-0207-151349_072925_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "072925"}, "frames": ["2020-0207-151349_072925_movie_t-3.jpg", "2020-0207-151349_072925_movie_t-2.jpg", "2020-0207-151349_072925_movie_t-1.jpg", "2020-0207-151349_072925_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-lane road under an elevated expressway curves left, with a solid yellow centerline and a right-side guardrail over a canal; the pavement looks worn and traffic is light. The ego travels in the left lane of two-way traffic toward a signalized intersection. A black van ahead in the ego lane slows to turn right at the intersection, holding the ego car behind. A large dump truck waits at the left side street near the crosswalk, poised to merge or cross after the van clears. A few vehicles proceed along the cross street ahead but remain outside the ego path.", "hazard_reasoning": "There is a black van slowing in front of the ego car, in the ego lane, because it is turning right. The van's reduced speed may force the driver to brake suddenly to maintain a safe distance and avoid collision under this situation."}
{"id": "train_07898", "split": "train", "clip_key": "2020-0226-101332_069659_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "069659"}, "frames": ["2020-0226-101332_069659_movie_t-3.jpg", "2020-0226-101332_069659_movie_t-2.jpg", "2020-0226-101332_069659_movie_t-1.jpg", "2020-0226-101332_069659_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three lanes in the same direction runs between mid-rise buildings, divided from oncoming traffic by a metal fence median; the pavement is smooth and dry and traffic is moderate and flowing. A silver van directly ahead in the ego lane drives away from the camera, opening a small gap and setting the pace. In the right lane near the median, a white minivan travels slightly ahead at a similar speed and stays in its lane. In the left lane, a dark flatbed truck ahead proceeds steadily with limited space to vehicles farther ahead. Overhead gantries span the roadway and bicycles line the left sidewalk.", "hazard_reasoning": "There is a silver van driving away from the ego car, in the ego lane. Following the vehicle ahead helps maintain a safe distance and avoid collision if it brakes suddenly."}
{"id": "train_07899", "split": "train", "clip_key": "2020-0203-114632_033913_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "033913"}, "frames": ["2020-0203-114632_033913_movie_t-3.jpg", "2020-0203-114632_033913_movie_t-2.jpg", "2020-0203-114632_033913_movie_t-1.jpg", "2020-0203-114632_033913_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "A busy urban commercial street with one lane per direction and painted center lines has dry pavement and heavy, slow traffic. A white minivan directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle. In the oncoming lane to the right, a city bus approaches slowly and continues straight within its lane without encroaching. Pedestrians crowd both sidewalks behind guardrails, and a person walks a bicycle along the left rail parallel to traffic. An overhead blue directional sign is visible, and a posted 50 speed limit sign stands on the left.", "hazard_reasoning": "There is a white minivan stopped in the ego lane, because of traffic congestion ahead. The driver should stop immediately to avoid a collision with the stopped vehicle ahead."}
{"id": "train_07900", "split": "train", "clip_key": "2020-0129-105040_068431_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "068431"}, "frames": ["2020-0129-105040_068431_movie_t-3.jpg", "2020-0129-105040_068431_movie_t-2.jpg", "2020-0129-105040_068431_movie_t-1.jpg", "2020-0129-105040_068431_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist", "environment_perception": "A narrow urban two-way street with one lane each way and a solid centerline runs between storefronts; the pavement is dry and smooth, and traffic is light. On the left edge near the ego car, a silver box truck is stopped with its rear open while a worker stands at the tail, partially blocking the ego lane and constraining the approach. Farther ahead along the left curb, a cyclist wearing a white coat rides away from the ego vehicle, narrowing the available space to pass. The opposite lane appears clear. An overhead triangular pedestrian-crossing warning sign is visible above a marked crosswalk. White roadside guardrails line both sides.", "hazard_reasoning": "A cyclist wearing a white coat is cycling along the left side of the road, away from the ego car. The cyclist may slow or shift position unexpectedly, so the driver should stay alert."}
{"id": "train_07901", "split": "train", "clip_key": "titan_clip_1041_000234_movie", "source": {"subset": "titan", "scenario": "clip_1041", "frame": "000234"}, "frames": ["titan_clip_1041_000234_movie_t-3.jpg", "titan_clip_1041_000234_movie_t-2.jpg", "titan_clip_1041_000234_movie_t-1.jpg", "titan_clip_1041_000234_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist movements.", "environment_perception": "An urban shopping street runs along a narrow two-way road without a centerline, the asphalt smooth and traffic light. The ego vehicle moves on the left as the corridor is tightened by storefronts and utility poles. A cyclist in a white shirt carrying a handbag rides away along the right edge because there is no bicycle lane, reducing clearance beside the ego's path. Farther ahead, another cyclist travels away near the middle of the roadway and effectively sets the pace for following vehicles. A small truck is stopped at the left curb with its covered rear protruding slightly, narrowing the passage. Parked bicycles line the right curb but remain outside the travel lane.", "hazard_reasoning": "There is a cyclist carrying a handbag and wearing a white shirt, cycling on the right side of the road away from the ego car, because there is no bicycle lane. The cyclist could unexpectedly swerve into the driving lane, so the driver should be aware and maintain a safe distance."}
{"id": "train_07902", "split": "train", "clip_key": "titan_clip_1118_000318_movie", "source": {"subset": "titan", "scenario": "clip_1118", "frame": "000318"}, "frames": ["titan_clip_1118_000318_movie_t-3.jpg", "titan_clip_1118_000318_movie_t-2.jpg", "titan_clip_1118_000318_movie_t-1.jpg", "titan_clip_1118_000318_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single lane in the ego direction, no median, and smooth pavement shows light traffic as the car continues straight. A small white van ahead in the ego lane slows near the left curb and briefly stops, constraining the ego vehicle's pace. Farther ahead, a pedestrian wearing black pants and a white coat carries shopping bags and crosses mid-block from the left, moving toward the ego lane and becoming the main potential conflict. Another light van farther up proceeds away in the same direction and keeps clear. Parked vehicles line the left, with planters and a cone along the right sidewalk.", "hazard_reasoning": "A pedestrian wearing black pants and a white coat, carrying shopping bags, and crossing the street in the middle of the road, to the left side. The pedestrian is moving unpredictably into the vehicle's path, so the driver should slow down to avoid a collision."}
{"id": "train_07903", "split": "train", "clip_key": "titan_clip_1338_000588_movie", "source": {"subset": "titan", "scenario": "clip_1338", "frame": "000588"}, "frames": ["titan_clip_1338_000588_movie_t-3.jpg", "titan_clip_1338_000588_movie_t-2.jpg", "titan_clip_1338_000588_movie_t-1.jpg", "titan_clip_1338_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with no centerline and fair pavement runs between mid-rise buildings, and traffic is very light with only parked vehicles on the right in a pay lot. Ahead on the left edge, a pedestrian wearing black pants and carrying a bag walks away from the ego vehicle along the roadway because there is no sidewalk, occupying the margin of the ego lane. Near the right foreground, another pedestrian moves along the parking-lot boundary close to the lane as the car passes. A white van is stopped at the right curb, and additional parked cars and a shop sign on the left tighten the available corridor.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying a bag, walking on the left side of the road, away from the ego car, because there is no sidewalk. The driver should carefully manoeuvre around the pedestrian to avoid collision, as the pedestrian has no safe sidewalk and may step unpredictably."}
{"id": "train_07904", "split": "train", "clip_key": "titan_clip_693_000282_movie", "source": {"subset": "titan", "scenario": "clip_693", "frame": "000282"}, "frames": ["titan_clip_693_000282_movie_t-3.jpg", "titan_clip_693_000282_movie_t-2.jpg", "titan_clip_693_000282_movie_t-1.jpg", "titan_clip_693_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian near the road edge", "environment_perception": "A narrow urban street without a centerline runs between shops and low buildings, the asphalt is smooth and traffic is light with no moving vehicles. Ahead, two pedestrians walk away along the middle of the roadway in the ego vehicle's path, constraining the approach. On the left edge mid-distance, a woman wearing a short black skirt and a black top, carrying a handbag, stands by the curb close to the travel lane and may enter it. On the right, a taped-off area with cones outside a building slightly narrows the roadside, and parked motorcycles line the left storefront but stay off the lane.", "hazard_reasoning": "There is a woman wearing a short black skirt and a black top, carrying a handbag, and standing on the left side of the road. The pedestrian may step onto the roadway unexpectedly, so the driver should stay alert to avoid potential conflict."}
{"id": "train_07905", "split": "train", "clip_key": "2020-0213-143552_032966_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "032966"}, "frames": ["2020-0213-143552_032966_movie_t-3.jpg", "2020-0213-143552_032966_movie_t-2.jpg", "2020-0213-143552_032966_movie_t-1.jpg", "2020-0213-143552_032966_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with two lanes in the same direction and no median appears in good condition, and traffic is moderate with a short queue near a signalized intersection. A white van ahead in the ego lane is stopped at a red traffic light, constraining the ego vehicle. In the right adjacent lane, several cars queue and creep forward toward the junction. On the left sidewalk beside a construction-covered building, two pedestrians walk along the curb and stay off the roadway.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of a red traffic light. The driver should stop to avoid a collision with the halted vehicle at the red signal."}
{"id": "train_07906", "split": "train", "clip_key": "2020-0204-103442_034610_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "034610"}, "frames": ["2020-0204-103442_034610_movie_t-3.jpg", "2020-0204-103442_034610_movie_t-2.jpg", "2020-0204-103442_034610_movie_t-1.jpg", "2020-0204-103442_034610_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated two-lane road runs under a viaduct with concrete side walls and smooth pavement, and traffic moves at a slow, moderate flow. A white box truck ahead in the left lane drives away in the ego lane, pulling gradually ahead and setting the pace. In the adjacent right lane slightly ahead, a blue minivan travels slowly near the wall, limiting any chance to pass. Farther ahead in the right lane, a silver car and a white van continue in the same direction with small gaps, keeping the neighboring lane occupied. A blue roadside sign with lane arrows is visible on the left, and the viaduct's columns intermittently narrow forward sightlines.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07907", "split": "train", "clip_key": "2020-0226-140503_105306_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "105306"}, "frames": ["2020-0226-140503_105306_movie_t-3.jpg", "2020-0226-140503_105306_movie_t-2.jpg", "2020-0226-140503_105306_movie_t-1.jpg", "2020-0226-140503_105306_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with two lanes in each direction and a low planted median stretches ahead; the pavement is smooth with several manhole covers, and traffic is moderate. A white box truck directly ahead in the ego lane slows, constraining the ego car's speed. Across the median to the right, a line of oncoming vans and cars moves steadily in the opposing lanes without affecting the ego path. Along the left curb of the ego roadway, several cars are parked or standing, leaving the travel lane clear but reducing lateral space. A roadside sign on the left posts 50, and distant signals hang over the roadway.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The slowing truck may reduce speed abruptly, so you should slow down to maintain a safe following distance."}
{"id": "train_07908", "split": "train", "clip_key": "2020-0207-101955_008333_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "008333"}, "frames": ["2020-0207-101955_008333_movie_t-3.jpg", "2020-0207-101955_008333_movie_t-2.jpg", "2020-0207-101955_008333_movie_t-1.jpg", "2020-0207-101955_008333_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the stopped van", "environment_perception": "An urban arterial with a single through lane in the ego's direction runs between tall buildings, divided from oncoming lanes on the right by a planted median; the pavement looks sound and traffic is heavy and slow. A black van directly ahead in the ego lane is stopped in a queue, effectively blocking the path, consistent with congestion further ahead. Additional vehicles line up beyond it in the same lane and move slowly, continuing to constrain the ego's pace. Oncoming cars flow steadily on the opposite carriageway to the right, separated by railings. An overhead blue direction sign points toward Kitashinjuku to the left and Iidabashi to the right.", "hazard_reasoning": "There is a black van stopped in the ego lane because of a traffic congestion ahead. The driver should stop to avoid colliding with the stationary van and queued traffic."}
{"id": "train_07909", "split": "train", "clip_key": "2020-0207-151349_058493_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "058493"}, "frames": ["2020-0207-151349_058493_movie_t-3.jpg", "2020-0207-151349_058493_movie_t-2.jpg", "2020-0207-151349_058493_movie_t-1.jpg", "2020-0207-151349_058493_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision ahead", "environment_perception": "An urban four-lane two-way road with no physical median and dry, smooth pavement carries heavy stop-and-go traffic in both directions. Buildings flank the street and the flow stays congested throughout. A silver sedan directly ahead in the ego lane is stopped because of traffic congestion, holding the ego car at a standstill. In the adjacent right lane, a white minivan farther ahead and a dark small truck close to the camera are also queued or inching, running parallel to the ego and limiting lateral space. Farther ahead in the right lane, a yellow box truck with ladders is stationary, contributing to the backup.", "hazard_reasoning": "There is a silver sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop because the vehicle ahead has halted abruptly due to congestion, preventing a safe following distance."}
{"id": "train_07910", "split": "train", "clip_key": "2020-0129-144857_079425_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "079425"}, "frames": ["2020-0129-144857_079425_movie_t-3.jpg", "2020-0129-144857_079425_movie_t-2.jpg", "2020-0129-144857_079425_movie_t-1.jpg", "2020-0129-144857_079425_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial in left-hand traffic with three same-direction lanes and a right-side guardrail passes through dense buildings; the pavement is dry and traffic is moderate and steady. Ahead in the ego lane, a white van moves right, changing to the right lane. In the left lane just ahead, a small white flatbed truck continues straight at a similar pace. In the right lane slightly ahead, a large truck proceeds straight alongside the van's maneuver. An overhead blue directional sign with place names and 300 m is visible.", "hazard_reasoning": "There is a white van in front of the ego car in the ego lane, changing to the right lane. This maneuver could reduce the gap to your vehicle and may require you to adjust your speed to avoid a collision, so you should slow down."}
{"id": "train_07911", "split": "train", "clip_key": "titan_clip_1191_000546_movie", "source": {"subset": "titan", "scenario": "clip_1191", "frame": "000546"}, "frames": ["titan_clip_1191_000546_movie_t-3.jpg", "titan_clip_1191_000546_movie_t-2.jpg", "titan_clip_1191_000546_movie_t-1.jpg", "titan_clip_1191_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban alley with a single narrow brick-paved lane runs between shops, without a median or centerline, and traffic is very light as the ego vehicle moves slowly. The pavement is in good condition and carries a large pedestrian symbol with a forward arrow. On the left near the ego car, a pedestrian in a black shirt and white pants walks away along the storefronts, staying at the edge of the lane. Far ahead at the alley entrance, two pedestrians stand by a shop and face the lane, which makes them possible entrants into the vehicle's path. Bicycles and shop displays are parked along both sides, slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and white pants and walking on the left side of the road, away from the ego car. The pedestrian may veer into the lane unexpectedly, so the driver should manoeuvre carefully around the pedestrian to maintain safety."}
{"id": "train_07912", "split": "train", "clip_key": "titan_clip_1170_000252_movie", "source": {"subset": "titan", "scenario": "clip_1170", "frame": "000252"}, "frames": ["titan_clip_1170_000252_movie_t-3.jpg", "titan_clip_1170_000252_movie_t-2.jpg", "titan_clip_1170_000252_movie_t-1.jpg", "titan_clip_1170_000252_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban commercial street with a single narrow shared lane and no median, paved with brick-pattern blocks, shows very light vehicle traffic and moderate pedestrian activity. On the right edge near the shopfront, a pedestrian wearing a white T-shirt and blue pants, backpack on, walks toward the ego car while looking at a phone, edging toward the travel lane and may enter the ego path. Ahead in the lane, a pedestrian walking away near the centerline continues forward in the same direction and could constrain speed. To the left by the building columns, another pedestrian approaches along the curb line while keeping to the side. Storefronts and structural pillars close to the carriageway narrow the usable space as the road bends slightly right.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and blue pants, looking into their phone, and carrying a backpack who is walking on the right side of the road, toward the ego car. The pedestrian's distracted behavior and trajectory toward the vehicle create a risk of unexpected road crossing, so the driver should be aware of their presence."}
{"id": "train_07913", "split": "train", "clip_key": "titan_clip_290_000090_movie", "source": {"subset": "titan", "scenario": "clip_290", "frame": "000090"}, "frames": ["titan_clip_290_000090_movie_t-3.jpg", "titan_clip_290_000090_movie_t-2.jpg", "titan_clip_290_000090_movie_t-1.jpg", "titan_clip_290_000090_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "'Yield to turning SUV'", "environment_perception": "An urban side street passes beneath an elevated railway, forming a narrow single-lane approach to a small intersection with smooth pavement and light traffic. Visibility is constrained by the overpass and closely packed storefronts. At the left edge of the junction, a white SUV turns left into the ego lane in the middle of the intersection, moving slowly into the path. A pedestrian ahead near the center walks rightward across the mouth of the lane toward the shopfronts. Another person stands at the storefront on the right by the curb without stepping into the roadway. A clearance sign above the underpass indicates 4.0 m.", "hazard_reasoning": "There is a white SUV turning left in the middle of the intersection, to the ego lane. Therefore, the driver should yield to the turning SUV to avoid a collision."}
{"id": "train_07914", "split": "train", "clip_key": "titan_clip_508_000474_movie", "source": {"subset": "titan", "scenario": "clip_508", "frame": "000474"}, "frames": ["titan_clip_508_000474_movie_t-3.jpg", "titan_clip_508_000474_movie_t-2.jpg", "titan_clip_508_000474_movie_t-1.jpg", "titan_clip_508_000474_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single mixed-traffic lane and no sidewalk has smooth asphalt and light vehicular activity. A white flatbed truck is parked along the right curb by a construction site, narrowing the passage. On the left edge near the ego path, two pedestrians walk away from the vehicle along the building line because there is no sidewalk, staying close to the lane. Ahead on the right, another pedestrian walks forward near the parked truck along the roadway, close to the ego lane. Farther ahead near an intersection, several pedestrians stand across the lane, forming a partial obstacle to the straight path. No traffic signals are visible.", "hazard_reasoning": "There are two pedestrians walking on the left side of the road, away from the ego car, because there is no sidewalk. Drivers should slow down because pedestrians are using the roadway, increasing the risk of collision."}
{"id": "train_07915", "split": "train", "clip_key": "2020-0205-103411_027499_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "027499"}, "frames": ["2020-0205-103411_027499_movie_t-3.jpg", "2020-0205-103411_027499_movie_t-2.jpg", "2020-0205-103411_027499_movie_t-1.jpg", "2020-0205-103411_027499_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes curves gently right, bordered by a landscaped verge on the left and a guardrail separating a parallel roadway on the right; the pavement looks smooth and traffic is light. Low cones line the left shoulder, and glare from the sun brightens the scene near tall buildings. A white van ahead slightly to the right in the right lane travels steadily through the curve, and the ego vehicle follows at a distance along the same bend. On the parallel lanes beyond the right-side barrier, a few cars continue in the same general direction without interacting with the ego lane. No signals or notable signs stand out, and no pedestrians or cyclists are visible.", "hazard_reasoning": "No hazards detected; the road is clear and cones are set safely aside, so the driver can continue without adjustment."}
{"id": "train_07916", "split": "train", "clip_key": "2020-0205-152530_053634_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "053634"}, "frames": ["2020-0205-152530_053634_movie_t-3.jpg", "2020-0205-152530_053634_movie_t-2.jpg", "2020-0205-152530_053634_movie_t-1.jpg", "2020-0205-152530_053634_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated divided road with two lanes in the same direction runs beneath an overpass, bounded by a left guardrail and a right concrete barrier on smooth pavement. Traffic is moderate near the ego-vehicle but grows heavy farther ahead where a queue forms. A gray van ahead in the ego lane slows steadily because congestion builds ahead, constraining the ego-car's pace. Farther ahead, a dense pack of cars across both lanes brakes and closes gaps in the same direction, creating the bottleneck the van approaches. Additional vehicles proceed in the right lane toward the slowdown without changing lanes. No pedestrians, cyclists, or oncoming traffic appear, and no special signs or hazards are evident.", "hazard_reasoning": "There's a gray van slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The slowing vehicle indicates increased traffic density ahead, so the driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_07917", "split": "train", "clip_key": "2020-0220-151845_000145_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "000145"}, "frames": ["2020-0220-151845_000145_movie_t-3.jpg", "2020-0220-151845_000145_movie_t-2.jpg", "2020-0220-151845_000145_movie_t-1.jpg", "2020-0220-151845_000145_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the merging vehicle", "environment_perception": "An urban multi-lane two-way road with a painted center divider and dry, smooth pavement; traffic is moderate with steady oncoming flow to the right. Ahead, a silver sedan in the ego lane moves right into the adjacent lane because a bus is stopped at the left curb in front of us, briefly shaping the ego vehicle's pace. The bus stays stationary at the curb, occupying the ego lane near a stop bay. Pedestrians walk along the left sidewalk behind railings and remain clear of the roadway.", "hazard_reasoning": "There is a silver sedan changing ego lane to the right lane, because there is a stopped bus, in front of the ego. This lane change could conflict with the ego-vehicle's path, so the driver should carefully manoeuvre around the merging vehicle."}
{"id": "train_07918", "split": "train", "clip_key": "2020-0218-103119_023038_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "023038"}, "frames": ["2020-0218-103119_023038_movie_t-3.jpg", "2020-0218-103119_023038_movie_t-2.jpg", "2020-0218-103119_023038_movie_t-1.jpg", "2020-0218-103119_023038_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the oncoming vehicle", "environment_perception": "An urban multi-lane two-way street with smooth pavement and no median runs between tall buildings toward a pedestrian overpass, and traffic is moderate in both directions. A white box truck ahead in the same direction travels straight at a steady pace, effectively setting the ego speed. A white van farther ahead near the left curb in the ego direction slows at the crosswalk, narrowing space. A black sedan approaches in the oncoming lane on the right, driving toward the ego car and continuing past within its lane. A pedestrian stands on the left sidewalk near the crosswalk.", "hazard_reasoning": "There is a black sedan driving in the oncoming lane, toward the ego car. This wrong-way maneuver poses a high collision risk, so be aware of the oncoming vehicle."}
{"id": "train_07919", "split": "train", "clip_key": "titan_clip_1210_000222_movie", "source": {"subset": "titan", "scenario": "clip_1210", "frame": "000222"}, "frames": ["titan_clip_1210_000222_movie_t-3.jpg", "titan_clip_1210_000222_movie_t-2.jpg", "titan_clip_1210_000222_movie_t-1.jpg", "titan_clip_1210_000222_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist approaching on the right side", "environment_perception": "A dense urban shopping street serves as a narrow two-way shared road with no marked lanes, paved in stone-pattern blocks and in good condition; vehicular flow is light but pedestrian activity is heavy. A small white van approaches oncoming near the center-right, easing through the crowd and limiting the ego vehicle's progress. A cyclist in a white shirt and cap rides ahead near the middle, moving away between pedestrians and briefly wavering within the ego path. Numerous pedestrians on both sides walk along and across the roadway directly ahead, with several midblock crossings from the left storefronts occupying the lane. A green truck is stopped at the right curb and parked bicycles with safety cones line the left, narrowing the passage.", "hazard_reasoning": "There is a cyclist wearing a white shirt, red shorts, and a cap, cycling on the right side of the road, towards the ego car. The cyclist is approaching the vehicle's path from the right, so the driver should be aware to avoid a potential collision."}
{"id": "train_07920", "split": "train", "clip_key": "2020-0227-153144_011170_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "011170"}, "frames": ["2020-0227-153144_011170_movie_t-3.jpg", "2020-0227-153144_011170_movie_t-2.jpg", "2020-0227-153144_011170_movie_t-1.jpg", "2020-0227-153144_011170_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the black van cutting in.", "environment_perception": "An urban street lined with mid-rise apartments carries light to moderate traffic on smooth pavement, with two lanes in the ego direction and no physical median. Ahead to the right, a black van begins to cut left into the ego lane and merges in front, briefly constraining the ego vehicle's pace. Farther ahead in the same lane, a dark sedan continues straight at a steady speed. Oncoming vehicles pass on the far right without interacting. A roadside sign on the left posts a 50 speed limit.", "hazard_reasoning": "There is a black van in the right lane, cutting in to the ego lane. This merging maneuver could force the driver to adjust speed or steering to maintain safe following distance, increasing collision risk."}
{"id": "train_07921", "split": "train", "clip_key": "2020-0131-103016_028783_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "028783"}, "frames": ["2020-0131-103016_028783_movie_t-3.jpg", "2020-0131-103016_028783_movie_t-2.jpg", "2020-0131-103016_028783_movie_t-1.jpg", "2020-0131-103016_028783_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene unfolds on a wide multi-lane two-way road with smooth pavement and light, steady traffic. The ego approaches a signalized intersection with zebra crosswalks, and temporary white barriers line the left curb while the lanes remain clear. Ahead in the ego lane, a white van drives away at a moderate pace and effectively sets the ego car's speed. Slightly right and ahead, a dark hatchback continues straight in the adjacent lane without changing lanes relative to the ego. Farther ahead near the junction, a small truck proceeds in the same direction, remaining centered in its lane. On the right sidewalk near the corner, a few pedestrians walk parallel to the road and do not approach the crossing.", "hazard_reasoning": "There is a white van driving in the ego lane in front of the ego car. The van may stop at the red light ahead, so following it at a safe distance helps maintain traffic flow and avoid sudden braking."}
{"id": "train_07922", "split": "train", "clip_key": "titan_clip_380_000594_movie", "source": {"subset": "titan", "scenario": "clip_380", "frame": "000594"}, "frames": ["titan_clip_380_000594_movie_t-3.jpg", "titan_clip_380_000594_movie_t-2.jpg", "titan_clip_380_000594_movie_t-1.jpg", "titan_clip_380_000594_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van.", "environment_perception": "An urban commercial street with shops lines a narrow single-lane roadway paved with blocks and lacking a median, and traffic flow is light and slow. A white van is parked on the left side of the road in the ego lane, narrowing the passage and constraining pace. A pedestrian just ahead on the left steps out from beside this van and crosses the lane toward the center, occupying the ego path. Several pedestrians farther ahead walk along the middle of the roadway away from the camera, keeping vehicles slow. A dark minivan ahead near the center-left rolls slowly or pauses among the pedestrians, further limiting progress.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane. It blocks part of the travel lane, forcing the driver to steer around it to avoid a collision."}
{"id": "train_07923", "split": "train", "clip_key": "2020-0218-103119_054152_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "054152"}, "frames": ["2020-0218-103119_054152_movie_t-3.jpg", "2020-0218-103119_054152_movie_t-2.jpg", "2020-0218-103119_054152_movie_t-1.jpg", "2020-0218-103119_054152_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban road runs under an elevated structure with multiple same-direction lanes and a right-side guardrail; the pavement looks smooth and overall flow is slow due to congestion. A white box truck is directly ahead in the ego lane, creeping forward and setting the pace. To the left, a gray truck in the adjacent lane slows because of congestion in that lane, traveling alongside and limiting room to pass. Farther ahead, a queue of cars occupies both lanes with intermittent braking. An overhead sign points toward Kita City.", "hazard_reasoning": "There is a gray truck slowing from the left lane, because of traffic congestion, in the left lane. The driver should follow the vehicle ahead at a safe distance to adapt to the reduced speed and avoid a rear-end collision."}
{"id": "train_07924", "split": "train", "clip_key": "titan_clip_830_000588_movie", "source": {"subset": "titan", "scenario": "clip_830", "frame": "000588"}, "frames": ["titan_clip_830_000588_movie_t-3.jpg", "titan_clip_830_000588_movie_t-2.jpg", "titan_clip_830_000588_movie_t-1.jpg", "titan_clip_830_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban shopping street with a single narrow shared lane on stone pavers shows very light traffic, with no median and storefronts tight to the roadway. Ahead, a pedestrian with a backpack walks in the middle of the road away from the ego vehicle, diverting around a parked vehicle and occupying the travel path. A delivery truck stands ahead slightly left with its rear open, partially blocking the lane and constraining passage. On the right at the curb, a man stands beside a storefront close to the edge of the lane. The corridor is further narrowed by shop signs and a parked bicycle near the truck.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking in the middle of the road, away from the ego car, because of the parked vehicle. The driver should manoeuvre carefully around the pedestrian to avoid a collision."}
{"id": "train_07925", "split": "train", "clip_key": "2020-0220-151845_050191_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "050191"}, "frames": ["2020-0220-151845_050191_movie_t-3.jpg", "2020-0220-151845_050191_movie_t-2.jpg", "2020-0220-151845_050191_movie_t-1.jpg", "2020-0220-151845_050191_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban elevated roadway under a viaduct has two same-direction lanes bounded by high concrete barriers, with slightly wet pavement and heavy, slow-moving traffic. Directly ahead in the ego lane, a pink flatbed truck covered with a yellow tarp is stopped because of congestion ahead, blocking the ego vehicle's path. In the adjacent right lane, a small white van slightly ahead creeps forward, continuing past the stopped truck with the queue. The narrow lanes and close barriers leave no shoulder and restrict maneuvering and visibility.", "hazard_reasoning": "There is a pink truck with a yellow tarp stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The stopped vehicle indicates congestion ahead and the driver must stop to avoid a rear-end collision."}
{"id": "train_07926", "split": "train", "clip_key": "titan_clip_1233_000042_movie", "source": {"subset": "titan", "scenario": "clip_1233", "frame": "000042"}, "frames": ["titan_clip_1233_000042_movie_t-3.jpg", "titan_clip_1233_000042_movie_t-2.jpg", "titan_clip_1233_000042_movie_t-1.jpg", "titan_clip_1233_000042_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "A narrow urban street with a single lane and green edge strips runs between buildings; the pavement is worn but intact, and traffic is light with no opposing vehicles visible. Two pedestrians, one in a white shirt and one in a blue dress, walk ahead along the left edge away from the ego car, close to the lane and potentially drifting into the travel path. Another pedestrian is farther ahead near the center of the lane walking away in the same direction, temporarily constraining the ego vehicle's pace. A white mini-van is stopped at the right curb ahead, positioned where it may merge into the lane.", "hazard_reasoning": "There are two pedestrians wearing a white shirt and a blue dress, walking on the left side of the road, away from the ego car. Carefully manoeuvre around the pedestrians to avoid a collision given their proximity to the vehicle."}
{"id": "train_07927", "split": "train", "clip_key": "titan_clip_509_000468_movie", "source": {"subset": "titan", "scenario": "clip_509", "frame": "000468"}, "frames": ["titan_clip_509_000468_movie_t-3.jpg", "titan_clip_509_000468_movie_t-2.jpg", "titan_clip_509_000468_movie_t-1.jpg", "titan_clip_509_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban residential two-way street with no centerline and smooth pavement is shown in clear weather, and traffic is light with no moving vehicles ahead. On the right side ahead, three pedestrians walk away along the edge; one carries an umbrella and pulls a small cart, and they encroach slightly toward the lane and may enter the ego lane. The remainder of the path ahead appears open. A white car is parked on the left near a driveway, stationary and not obstructing the lane. No notable traffic signs or signals are visible.", "hazard_reasoning": "There is a pedestrian carrying an umbrella, and walking on the right side of the road, away from the ego car. Carefully manoeuvre around the pedestrian because the curve ahead and their position on the roadway could lead to unexpected crossing."}
{"id": "train_07928", "split": "train", "clip_key": "2020-0131-135401_055556_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "055556"}, "frames": ["2020-0131-135401_055556_movie_t-3.jpg", "2020-0131-135401_055556_movie_t-2.jpg", "2020-0131-135401_055556_movie_t-1.jpg", "2020-0131-135401_055556_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban multi-lane arterial runs through dense mid-rise buildings, three lanes in the ego direction with no physical median and clean pavement, and heavy stop-and-go flow approaching a signalized intersection. A silver sedan directly ahead in the ego lane is stopped, holding the ego car because the traffic light ahead is red. To the right, a white minivan slightly ahead in the adjacent lane creeps forward in the queue, remaining parallel to the ego path. On the left, a black van just ahead in the neighboring lane waits in line, boxing the ego vehicle within the platoon. Overhead blue direction boards show lane guidance for left and right turns, and a pedestrian overpass spans the roadway; no unusual obstacles are visible.", "hazard_reasoning": "There is silver sedan stopped in the ego lane, in front of the ego car, because of red traffic lights. The driver should stop immediately to avoid a rear-end collision with the halted vehicle."}
{"id": "train_07929", "split": "train", "clip_key": "titan_clip_149_000522_movie", "source": {"subset": "titan", "scenario": "clip_149", "frame": "000522"}, "frames": ["titan_clip_149_000522_movie_t-3.jpg", "titan_clip_149_000522_movie_t-2.jpg", "titan_clip_149_000522_movie_t-1.jpg", "titan_clip_149_000522_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of crossing pedestrian.", "environment_perception": "An urban street with mid-rise buildings and trees appears, with the ego car paused at a crosswalk on an undivided two-way road; the pavement is smooth and traffic is light with no moving vehicles nearby. Ahead, two pedestrians in beige shirts and black pants walk from the right toward the left across the crosswalk directly in front of the ego lane, steadily traversing and constraining the vehicle's motion. A bicycle is parked by the left sidewalk, and the opposite approach remains clear.", "hazard_reasoning": "There is a pedestrian wearing a beige shirt and black pants, crossing at the pedestrian crosswalk to the left side of the road. The pedestrian is entering the lane and may not clear the crosswalk promptly, so you should be aware of their movement to avoid a collision."}
{"id": "train_07930", "split": "train", "clip_key": "2020-0212-102546_070221_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "070221"}, "frames": ["2020-0212-102546_070221_movie_t-3.jpg", "2020-0212-102546_070221_movie_t-2.jpg", "2020-0212-102546_070221_movie_t-1.jpg", "2020-0212-102546_070221_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane road with dry, well-kept pavement runs beneath an elevated structure, and a metal fence on the right separates oncoming traffic; overall flow is light but momentarily impeded. Directly ahead, a yellow cement mixer truck is stopped in the ego lane, blocking the path and constraining the ego vehicle's pace. In the adjacent left lane slightly ahead, a white SUV waits beside the truck, limiting space for an immediate lane change. No pedestrians or cyclists are visible near the roadside, and the far roadway beyond the obstruction looks clear.", "hazard_reasoning": "There is a yellow truck stopped in the ego lane. The stopped truck directly ahead poses a collision risk, so the driver must stop promptly."}
{"id": "train_07931", "split": "train", "clip_key": "2020-0206-142535_037496_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "037496"}, "frames": ["2020-0206-142535_037496_movie_t-3.jpg", "2020-0206-142535_037496_movie_t-2.jpg", "2020-0206-142535_037496_movie_t-1.jpg", "2020-0206-142535_037496_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two lanes in the ego direction and a raised median with railings runs straight ahead on smooth pavement; traffic is light to moderate and steady. At the zebra crossing immediately ahead, a tall pedestrian in a black suit carrying a handbag enters from the left and walks right across the ego lane, directly in the path. Along the left curb ahead, two small trucks are stopped while a person stands by a cart, effectively narrowing the left lane and constraining movement near the curb. Farther ahead in the ego direction, a blue microcar continues straight with ample gap. On the opposite carriageway to the right of the median, several trucks and cars approach as oncoming traffic but remain separated. Overhead traffic signals and blue directional signs mark the intersection.", "hazard_reasoning": "There is a tall pedestrian, wearing a black suit, carrying a handbag, crossing the street from the left side to the right side, at the pedestrian crosswalk. The driver should stop because the pedestrian is entering the vehicle's path at a crosswalk under a red light."}
{"id": "train_07932", "split": "train", "clip_key": "titan_clip_532_000216_movie", "source": {"subset": "titan", "scenario": "clip_532", "frame": "000216"}, "frames": ["titan_clip_532_000216_movie_t-3.jpg", "titan_clip_532_000216_movie_t-2.jpg", "titan_clip_532_000216_movie_t-1.jpg", "titan_clip_532_000216_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "A narrow urban side street in Japan approaches a small T-intersection, with a single lane, no median, smooth pavement, and light overall traffic. Ahead in the intersection, a pedestrian in a white shirt carrying a backpack crosses from right to left in front of the ego vehicle, occupying the path and constraining progress. On the left sidewalk near the corner, another pedestrian walks along the storefronts and stays off the roadway. Prominent roadside signs show a red triangular stop and a blue right-turn-only indication, with a no-parking sign beneath. At the right curb, a white van is stopped beside stacked boxes and cones, narrowing the corner and encroaching on the usable space near the intersection.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, and crossing the street, from the right side to the left side, ahead at the intersection. The driver should yield because the pedestrian is entering the vehicle's path, requiring a stop to prevent a collision."}
{"id": "train_07933", "split": "train", "clip_key": "titan_clip_1199_000366_movie", "source": {"subset": "titan", "scenario": "clip_1199", "frame": "000366"}, "frames": ["titan_clip_1199_000366_movie_t-3.jpg", "titan_clip_1199_000366_movie_t-2.jpg", "titan_clip_1199_000366_movie_t-1.jpg", "titan_clip_1199_000366_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with no median and smooth pavement shows light traffic as the road continues straight and then bends slightly right, lined closely by buildings and bicycles on the left. A pedestrian in gray pants and a gray shirt carrying a shoulder bag walks away in the ego lane to maneuver around a parked car on the right, temporarily occupying the ego-vehicle's path. Another person stands near the same parked silver car at the curb on the right but stays out of the lane. No prominent traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian in gray pants and a gray shirt, carrying a shoulder bag, walking away from the ego-car in the ego lane because he is maneuvering around a parked car. The pedestrian is entering your lane to avoid the parked vehicle, so you should carefully manoeuvre around the pedestrian to prevent a collision."}
{"id": "train_07934", "split": "train", "clip_key": "titan_clip_1061_000480_movie", "source": {"subset": "titan", "scenario": "clip_1061", "frame": "000480"}, "frames": ["titan_clip_1061_000480_movie_t-3.jpg", "titan_clip_1061_000480_movie_t-2.jpg", "titan_clip_1061_000480_movie_t-1.jpg", "titan_clip_1061_000480_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "cyclist in yellow t-shirt", "environment_perception": "A narrow urban street with storefronts lines an unmarked carriageway; the pavement looks intact and traffic is light. Ahead on the left, a cyclist in a yellow T-shirt rides away along the curb in the ego lane, setting a slower pace. Farther ahead in the same direction, a small truck proceeds away near the center of the street. On the near right, a pedestrian stands at a shop entrance without stepping into the roadway. A red triangular stop sign and large \"\"止まれ\"  marking are visible at the next intersection", "hazard_reasoning": "and a scooter is parked along the right curb.\""}
{"id": "train_07935", "split": "train", "clip_key": "titan_clip_763_000174_movie", "source": {"subset": "titan", "scenario": "clip_763", "frame": "000174"}, "frames": ["titan_clip_763_000174_movie_t-3.jpg", "titan_clip_763_000174_movie_t-2.jpg", "titan_clip_763_000174_movie_t-1.jpg", "titan_clip_763_000174_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban commercial street appears with a single narrow lane, no center divider, and smooth pavement; vehicular traffic is light while pedestrian activity is high, and rows of cones tighten the edges of the roadway. On the right side near the curb, a pedestrian wearing a beige sweater and carrying a handbag walks away from the ego vehicle along the lane margin. Ahead in the center of the lane, a white-shirted pedestrian walks toward the ego vehicle and then keeps slightly left, directly occupying the path. Groups of pedestrians linger by storefronts on both sides close to the cones and may step into the lane. No traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing a beige sweater and a handbag, walking on the right side of the road, away from the ego car. This pedestrian is close to the driving lane and may step into the vehicle's path unexpectedly, so the driver should be aware and ready to react."}
{"id": "train_07936", "split": "train", "clip_key": "titan_clip_1065_000252_movie", "source": {"subset": "titan", "scenario": "clip_1065", "frame": "000252"}, "frames": ["titan_clip_1065_000252_movie_t-3.jpg", "titan_clip_1065_000252_movie_t-2.jpg", "titan_clip_1065_000252_movie_t-1.jpg", "titan_clip_1065_000252_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban back street with a single narrow lane and no marked centerline runs between buildings on smooth asphalt; overall traffic is light and slow. Two pedestrians on the left close to the camera, one wearing a long black shirt and the other a white shirt with black pants, walk away along the edge because there is no sidewalk, staying close to the ego path. Two more pedestrians ahead near the center-right continue away at a leisurely pace, occupying the lane and constraining the car's speed. Farther ahead a small service vehicle or cart stands by a storefront on the right, protruding slightly into the lane and creating a pinch point.", "hazard_reasoning": "There are two pedestrians talking in a group, one wearing a long black shirt and the other wearing a white shirt and black pants, walking on the left side of the road, away from the ego car, because there is no sidewalk. The driver should carefully manoeuvre around them as they are walking on the roadway and may enter the driving lane unexpectedly."}
{"id": "train_07937", "split": "train", "clip_key": "2020-0207-101955_063868_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "063868"}, "frames": ["2020-0207-101955_063868_movie_t-3.jpg", "2020-0207-101955_063868_movie_t-2.jpg", "2020-0207-101955_063868_movie_t-1.jpg", "2020-0207-101955_063868_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be aware of stopped silver van", "environment_perception": "An urban divided arterial with three lanes in the ego direction and a raised median appears dry and well kept as traffic builds into a slow-moving queue toward an intersection ahead. A white hatchback directly ahead in the center lane creeps forward with brake lights on, constraining the ego vehicle's pace. A blue flatbed truck slightly ahead in the left lane rolls slowly alongside, limiting chances to merge. To the right beside the median, a silver van is stopped in the right-turn lane because of traffic congestion and remains stationary. Additional same-direction vehicles queue farther ahead while oncoming traffic beyond the median flows separately.", "hazard_reasoning": "There is a silver van stopped in the right lane because of traffic congestion. The van's stationary position in the travel lane requires the driver to be aware of it to avoid sudden braking or collision."}
{"id": "train_07938", "split": "train", "clip_key": "2020-0218-103119_050406_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "050406"}, "frames": ["2020-0218-103119_050406_movie_t-3.jpg", "2020-0218-103119_050406_movie_t-2.jpg", "2020-0218-103119_050406_movie_t-1.jpg", "2020-0218-103119_050406_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial approaches a signalized intersection, with marked lanes and no physical median; the pavement is dry and traffic is moderately queued at the light. A white box truck directly ahead in the ego lane is stopped for a red signal, holding the ego car at the line as described. To the left, a white van in the adjacent same-direction lane also waits at the red, aligning with the truck and limiting room to maneuver. To the right, a gray sedan in the right-turn lane edges forward and turns right, remaining out of the ego path. Overhead traffic lights show red for the ego direction.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of a red traffic light. Stop because the truck ahead is halted at a red light and failing to do so could lead to a collision."}
{"id": "train_07939", "split": "train", "clip_key": "titan_clip_984_000594_movie", "source": {"subset": "titan", "scenario": "clip_984", "frame": "000594"}, "frames": ["titan_clip_984_000594_movie_t-3.jpg", "titan_clip_984_000594_movie_t-2.jpg", "titan_clip_984_000594_movie_t-1.jpg", "titan_clip_984_000594_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway and no centerline runs between small shops; the single shared lane has intact pavement and light traffic. The ego vehicle proceeds along the left side with no divider. On the right edge near the curb, an oncoming cyclist rides toward the camera at a steady pace and is set to pass close to the ego path. Farther ahead near the middle of the lane, another cyclist moves away in the same direction, holding course and potentially constraining the ego vehicle's speed. Bicycles are parked along the left storefront and intrude slightly into the roadway, narrowing usable space.", "hazard_reasoning": "No caption provided. No immediate hazards are detected; the road ahead is clear and the parked vehicle poses minimal risk under current conditions."}
{"id": "train_07940", "split": "train", "clip_key": "2020-0207-101955_122497_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "122497"}, "frames": ["2020-0207-101955_122497_movie_t-3.jpg", "2020-0207-101955_122497_movie_t-2.jpg", "2020-0207-101955_122497_movie_t-1.jpg", "2020-0207-101955_122497_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban three-lane road runs under an elevated structure with a curbside shoulder on the right; the pavement is dry and same-direction traffic is heavy and mostly stopped. A white van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. In the adjacent lane to the left, a pink garbage truck waits and inches forward alongside, limiting space to merge. Farther ahead in the middle-left lane, a large box truck remains stationary within the queue, reinforcing the slowdown. No oncoming lanes are visible, and the right shoulder under the viaduct is clear.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop immediately to maintain a safe distance and avoid a rear-end collision with the halted vehicle."}
{"id": "train_07941", "split": "train", "clip_key": "2020-0228-102841_062253_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "062253"}, "frames": ["2020-0228-102841_062253_movie_t-3.jpg", "2020-0228-102841_062253_movie_t-2.jpg", "2020-0228-102841_062253_movie_t-1.jpg", "2020-0228-102841_062253_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of lane change", "environment_perception": "An urban multi-lane arterial has smooth dry pavement and a grassy raised median that separates oncoming traffic to the right; traffic is moderate and generally steady. Ahead of the ego car, a black hatchback merges right from the left lane, crossing in front and setting the immediate pace. Farther left, a white box truck continues straight in its lane at a slightly slower speed, prompting surrounding vehicles to adjust. On the opposite side of the median to the right, a white SUV travels toward us with other light oncoming flow. A small white car is stopped at the far left edge near the curb.", "hazard_reasoning": "There is a black hatchback changing lanes from the left lane to the right lane. The driver should be aware because the hatchback's maneuver could encroach on the ego-vehicle's space and require timely adjustment."}
{"id": "train_07942", "split": "train", "clip_key": "titan_clip_1084_000078_movie", "source": {"subset": "titan", "scenario": "clip_1084", "frame": "000078"}, "frames": ["titan_clip_1084_000078_movie_t-3.jpg", "titan_clip_1084_000078_movie_t-2.jpg", "titan_clip_1084_000078_movie_t-1.jpg", "titan_clip_1084_000078_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban backstreet with a single shared lane, no median, and no sidewalks runs between close building walls; the pavement is dry and intact, and no vehicles are present so traffic is light. Directly ahead in the middle of the lane, a pedestrian in a black dress carrying a handbag walks away from the ego car because there is no sidewalk, occupying the path and setting the pace. Near the left edge, a man approaches along the curb, close to the lane and affecting clearance. Farther ahead near the center-right, a person holding a light umbrella also walks away within the lane, further reducing space. The corridor is tightly bounded, with a utility pole near the left edge, leaving limited room to maneuver.", "hazard_reasoning": "There is a pedestrian wearing a black dress and carrying handbag walking in the middle of the road away from the ego car because there is no sidewalk on the side of the road. The driver should slow down to maintain a safe distance and avoid collision with the pedestrian."}
{"id": "train_07943", "split": "train", "clip_key": "titan_clip_1156_000162_movie", "source": {"subset": "titan", "scenario": "clip_1156", "frame": "000162"}, "frames": ["titan_clip_1156_000162_movie_t-3.jpg", "titan_clip_1156_000162_movie_t-2.jpg", "titan_clip_1156_000162_movie_t-1.jpg", "titan_clip_1156_000162_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist crossing ahead", "environment_perception": "An urban multi-lane street with midrise buildings has two lanes in the ego direction, no physical median, and worn asphalt; traffic is light in both directions. Large orange 40 speed markings are painted on the roadway. A black SUV slightly ahead in the adjacent right lane travels straight and gradually pulls ahead, overtaking while remaining in its lane. A white light truck passes close on the right edge and continues ahead in the right lane, briefly narrowing lateral space. Far ahead in the ego lane, a small car moves away steadily, serving as the vehicle the ego follows at a distance.", "hazard_reasoning": "There is a cyclist wearing black clothing, on the right side of the road, attempting to cross the street. The driver should be aware of the cyclist's crossing intention so as to anticipate their movement and avoid a collision."}
{"id": "train_07944", "split": "train", "clip_key": "titan_clip_1240_000096_movie", "source": {"subset": "titan", "scenario": "clip_1240", "frame": "000096"}, "frames": ["titan_clip_1240_000096_movie_t-3.jpg", "titan_clip_1240_000096_movie_t-2.jpg", "titan_clip_1240_000096_movie_t-1.jpg", "titan_clip_1240_000096_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with no centerline runs past closely spaced buildings and greenery on dry, intact pavement, and traffic is light. Ahead on the right edge, a pedestrian in a black shirt walks toward the ego vehicle along the roadside, close to the travel lane and relevant because he may step into the path. Just beyond him on the right, a dark minivan is parked partly out of a driveway, narrowing the usable width. A tight junction at the left corner is screened by a building and foliage, creating a blind approach.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, walking on the left side of the road, towards the ego car. The pedestrian is approaching the vehicle's path, so the driver should reduce speed to avoid a potential collision."}
{"id": "train_07945", "split": "train", "clip_key": "titan_clip_874_000132_movie", "source": {"subset": "titan", "scenario": "clip_874", "frame": "000132"}, "frames": ["titan_clip_874_000132_movie_t-3.jpg", "titan_clip_874_000132_movie_t-2.jpg", "titan_clip_874_000132_movie_t-1.jpg", "titan_clip_874_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrians ahead", "environment_perception": "An urban shopping street with no marked centerline and block paving runs straight between storefronts, and traffic is light throughout. On the left, a black van is parked with its rear door open, its back end intruding slightly into the travel space and narrowing the lane. Ahead on the left, two pedestrians, one in a green T-shirt and one in a black T-shirt, walk away from the ego car along the roadside and may remain close to the path. Farther ahead near the middle of the street, a bicyclist rides in the same direction at a gentle pace and currently constrains the ego vehicle's speed. Cones and displays line the right edge but remain outside the lane.", "hazard_reasoning": "There are two pedestrians, wearing a green t-shirt and a black t-shirt, walking on the left side of the road, away from the ego car. They may suddenly change direction or enter the roadway, requiring the driver to slow down and remain vigilant."}
{"id": "train_07946", "split": "train", "clip_key": "titan_clip_195_000252_movie", "source": {"subset": "titan", "scenario": "clip_195", "frame": "000252"}, "frames": ["titan_clip_195_000252_movie_t-3.jpg", "titan_clip_195_000252_movie_t-2.jpg", "titan_clip_195_000252_movie_t-1.jpg", "titan_clip_195_000252_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban two-way street with no center divider runs between tall buildings; the pavement is smooth and traffic is light. In the ego lane ahead, a pedestrian wearing a white shirt and black pants crosses from the right to the left directly in front of the car, briefly occupying the path. Farther ahead in the same direction, a small group of scooters moves slowly along the lane, constraining the pace. Near the left edge close to the camera, a white van is stopped at the curb encroaching slightly into the lane, reducing clearance.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, crossing the street in front of the ego car, from the right side to the left side. The driver should yield because the pedestrian is in the vehicle's path and could be struck if the vehicle moves forward without slowing."}
{"id": "train_07947", "split": "train", "clip_key": "titan_clip_1211_000024_movie", "source": {"subset": "titan", "scenario": "clip_1211", "frame": "000024"}, "frames": ["titan_clip_1211_000024_movie_t-3.jpg", "titan_clip_1211_000024_movie_t-2.jpg", "titan_clip_1211_000024_movie_t-1.jpg", "titan_clip_1211_000024_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban commercial street with a single narrow shared lane and no median runs between tall buildings; the paver surface is clean and dry, and traffic is light. Two pedestrians ahead in the center of the lane walk away from the ego vehicle, one wearing a black dress and the other a yellow shirt with black pants, occupying the ego path. A white delivery mini-truck is stopped at the right curb, its rear protruding slightly into the lane and narrowing the passage. Additional pedestrians appear farther ahead near storefronts along both sides but stay to the edges. Orange cones line the right side near the curb.", "hazard_reasoning": "There are two pedestrians wearing a black dress, a yellow shirt, and black pants, and walking in front of the ego car, away from the ego car. These pedestrians are walking in front of the vehicle and may step further into its path, so the driver should manoeuvre carefully around them to avoid collision."}
{"id": "train_07948", "split": "train", "clip_key": "2020-0220-102630_014643_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "014643"}, "frames": ["2020-0220-102630_014643_movie_t-3.jpg", "2020-0220-102630_014643_movie_t-2.jpg", "2020-0220-102630_014643_movie_t-1.jpg", "2020-0220-102630_014643_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop promptly to keep safe distance.", "environment_perception": "An urban multi-lane road curves gently right between mid-rise buildings; the pavement looks smooth and dry, and traffic is heavy with stop-and-go flow. A white sedan is stopped directly ahead in the ego lane because congestion blocks the way, holding the ego car. To the right, a small flatbed truck creeps forward in the adjacent lane beside the sedan, staying close to the lane line and constraining lateral space. Farther ahead, several large box trucks queue across the lanes and barely move, creating a bottleneck that limits forward visibility. A speed limit 50 sign stands on the left sidewalk.", "hazard_reasoning": "There is a white sedan stopped in front of the ego-car, in the ego lane, because of the traffic congestion ahead. The driver should stop to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_07949", "split": "train", "clip_key": "titan_clip_774_000468_movie", "source": {"subset": "titan", "scenario": "clip_774", "frame": "000468"}, "frames": ["titan_clip_774_000468_movie_t-3.jpg", "titan_clip_774_000468_movie_t-2.jpg", "titan_clip_774_000468_movie_t-1.jpg", "titan_clip_774_000468_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the open door", "environment_perception": "A narrow urban two-way street with smooth asphalt and no centerline runs between low-rise buildings, and traffic is light. Ahead on the left, a gray sedan is stopped partly in the ego lane as a passenger opens the door to exit, temporarily obstructing the path. On the right ahead, a cyclist travels toward the ego vehicle along the opposite side near the curb, reducing the passing space beside the stopped car. Farther ahead the roadway appears clear aside from storefronts and a few parked bicycles.", "hazard_reasoning": "There is a gray sedan parked on the left side of the street, in the ego lane, because a passenger is opening the door to exit the vehicle. The driver should carefully manoeuvre as the open door may obstruct the lane and pose a collision risk."}
{"id": "train_07950", "split": "train", "clip_key": "titan_clip_30_000054_movie", "source": {"subset": "titan", "scenario": "clip_30", "frame": "000054"}, "frames": ["titan_clip_30_000054_movie_t-3.jpg", "titan_clip_30_000054_movie_t-2.jpg", "titan_clip_30_000054_movie_t-1.jpg", "titan_clip_30_000054_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "be aware", "environment_perception": "An urban downtown scene shows a two-way street with one lane in each direction, no median, and smooth pavement as the ego vehicle approaches a small intersection; traffic is light. On the right ahead, a pedestrian wearing a white T-shirt and black pants crosses along the near crosswalk toward the sidewalk on the right, moving near the edge of the ego lane and becoming immediately relevant. From the left curb, another pedestrian steps onto the same crosswalk and walks rightward across the ego lane, further influencing the approach. Far ahead in the same direction, a white van travels slowly near the left curb of the lane, acting as a lead vehicle.", "hazard_reasoning": "There is a pedestrian on the right side of the road, wearing a white t-shirt and black pants, crossing to the sidewalk on the right. The driver should be aware of the pedestrian to avoid a collision as they may continue into the vehicle's path."}
{"id": "train_07951", "split": "train", "clip_key": "2020-0129-144857_051746_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "051746"}, "frames": ["2020-0129-144857_051746_movie_t-3.jpg", "2020-0129-144857_051746_movie_t-2.jpg", "2020-0129-144857_051746_movie_t-1.jpg", "2020-0129-144857_051746_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs straight on dry, well?arked pavement, with a steel guardrail separating oncoming traffic; flow appears moderate and steady as the road gently rises ahead. A white sedan drives ahead in the ego lane pulling away, remaining directly in the path and gradually increasing the gap. Farther ahead in the same lane, a small white car continues straight at a similar pace, still relevant as it occupies the ego vehicle's lane. To the right beyond the median, an oncoming truck travels the opposite direction behind the barrier and does not interact. A roadside sign shows a 50 speed limit.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07952", "split": "train", "clip_key": "2020-0221-115122_016684_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "016684"}, "frames": ["2020-0221-115122_016684_movie_t-3.jpg", "2020-0221-115122_016684_movie_t-2.jpg", "2020-0221-115122_016684_movie_t-1.jpg", "2020-0221-115122_016684_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs beneath an elevated structure with two same-direction lanes and a right-side guardrail; the pavement is dry and traffic shifts from slow to moving. A gray van directly ahead in the ego lane starts accelerating away as traffic has eased up ahead, opening a gap. A motorcyclist rides along the left edge slightly ahead, moving forward past the van and staying near the lane line where it could enter the ego path. A small dark car in the adjacent right lane travels alongside and then edges ahead, limiting any immediate rightward merge. Farther ahead in the right lane, a white van proceeds steadily with the flow. No signals are visible, and sight lines are partly constrained by the elevated columns.", "hazard_reasoning": "There is a gray van starting to drive in the ego lane away from the ego car because traffic have eased up ahead. The van's lane change reduces the gap on the left side of the ego-vehicle, so the driver should start moving to keep pace with the traffic flow and avoid hesitation."}
{"id": "train_07953", "split": "train", "clip_key": "2020-0204-103442_038555_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "038555"}, "frames": ["2020-0204-103442_038555_movie_t-3.jpg", "2020-0204-103442_038555_movie_t-2.jpg", "2020-0204-103442_038555_movie_t-1.jpg", "2020-0204-103442_038555_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane road runs under an elevated expressway, with a guardrail along the right and smooth dry pavement; traffic is moderate and generally steady. A white box truck ahead in the ego lane proceeds at a steady pace and sets the following distance. Farther ahead a silver sedan in the same lane slows, temporarily constraining the flow for the truck and the ego car. A dark mini car to the right draws alongside in the adjacent lane and continues straight without encroaching. Parked vehicles line the left curb but remain outside the travel lanes.", "hazard_reasoning": "There is a silver sedan slowing in the ego lane, in front of the ego car. The sedan's deceleration ahead poses a rear-end collision risk, so the driver should reduce speed promptly to maintain a safe following distance."}
{"id": "train_07954", "split": "train", "clip_key": "2020-0203-114632_059663_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "059663"}, "frames": ["2020-0203-114632_059663_movie_t-3.jpg", "2020-0203-114632_059663_movie_t-2.jpg", "2020-0203-114632_059663_movie_t-1.jpg", "2020-0203-114632_059663_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van.", "environment_perception": "An urban arterial with three same-direction lanes is divided from oncoming traffic by a low-post median; the pavement appears smooth and newly marked, and traffic is light. A white van is parked ahead along the curb in the lane to the left of the ego-car, standing still and partially blocking that lane. Farther ahead in the ego lane, a small truck travels steadily, loosely pacing the flow. On the right side of the median, an oncoming heavy truck moves slowly near the curb in its lane. A pedestrian signal on the left shows a green walk.", "hazard_reasoning": "There is a white van parked on the left side of the street, in the lane to the left of the ego-car. This parked van narrows the drivable area and may obstruct the lane, so the driver should manoeuvre carefully to avoid collision."}
{"id": "train_07955", "split": "train", "clip_key": "2020-0220-151845_062965_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "062965"}, "frames": ["2020-0220-151845_062965_movie_t-3.jpg", "2020-0220-151845_062965_movie_t-2.jpg", "2020-0220-151845_062965_movie_t-1.jpg", "2020-0220-151845_062965_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban covered roadway with two same-direction lanes and side barriers carries moderate, slow-moving traffic on smooth pavement. A red truck directly ahead in the ego lane slows and sets the pace for the ego vehicle. In the adjacent right lane, a dark SUV draws alongside at a similar speed, restricting a potential lane change. Farther ahead in the right lane, a small white van continues steadily and contributes to the slow flow in that lane. Diagonal hatch markings and the enclosed structure create a slightly constrained corridor but no specific signals are visible.", "hazard_reasoning": "There is a red truck slowing in the ego lane, in front of the ego car. The truck's deceleration ahead may require prompt braking to avoid a collision, so the driver should reduce speed in this situation."}
{"id": "train_07956", "split": "train", "clip_key": "titan_clip_1102_000546_movie", "source": {"subset": "titan", "scenario": "clip_1102", "frame": "000546"}, "frames": ["titan_clip_1102_000546_movie_t-3.jpg", "titan_clip_1102_000546_movie_t-2.jpg", "titan_clip_1102_000546_movie_t-1.jpg", "titan_clip_1102_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow shared lane and no divider, paved with interlocking bricks that look clean and dry. Traffic flow is light and consists only of pedestrians; no motor vehicles are visible. A small group of pedestrians ahead in the center of the lane walks away in the same direction as the ego vehicle, setting a slow pace. On the right side, a pedestrian wearing a black shirt and white pants carries an umbrella and walks toward the ego car along the edge, possibly edging into the path. Farther ahead, a few other pedestrians move casually along the corridor in both directions. Parked bicycles and shop signboards line both sides and protrude into the roadway, narrowing usable space.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and white pants, carrying an umbrella, and walking on the right side of the road, towards the ego car. The pedestrian could step into the vehicle's path unexpectedly, so the driver should slow down to maintain safe distance and avoid a collision."}
{"id": "train_07957", "split": "train", "clip_key": "titan_clip_536_000048_movie", "source": {"subset": "titan", "scenario": "clip_536", "frame": "000048"}, "frames": ["titan_clip_536_000048_movie_t-3.jpg", "titan_clip_536_000048_movie_t-2.jpg", "titan_clip_536_000048_movie_t-1.jpg", "titan_clip_536_000048_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban side street with a narrow two-way carriageway lacking a center line is shown; the asphalt looks smooth and dry, and traffic is extremely light with no moving vehicles. The ego-vehicle progresses along the left side as the road bends slightly left around a corner building. No road users are immediately ahead or alongside, and no oncoming vehicles appear down the block. A small side street opens on the left mid-block, storefronts line both sides, and cones and bollards protect the left sidewalk while vending machines stand on the right. The corner building creates a limited-sight left bend and partial occlusion at the upcoming junction.", "hazard_reasoning": "No potential hazards are detected; no warning is necessary."}
{"id": "train_07958", "split": "train", "clip_key": "2020-0228-102841_001537_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "001537"}, "frames": ["2020-0228-102841_001537_movie_t-3.jpg", "2020-0228-102841_001537_movie_t-2.jpg", "2020-0228-102841_001537_movie_t-1.jpg", "2020-0228-102841_001537_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware", "environment_perception": "A narrow urban two-way street with no divider and worn pavement runs between close storefronts, and traffic is light. Ahead near the center, a small black van faces the ego vehicle in the oncoming lane and appears stopped or creeping in the constricted section, limiting passing space. On the right side of the road, a man wearing a black hoodie and brown pants walks away from the ego car along the curb, reducing clearance beside the lane. At the near-right edge, another pedestrian with a backpack stands by the storefront without stepping into the roadway. Parked bicycles line the left curb and utility poles and shutters crowd the right, further narrowing the carriageway.", "hazard_reasoning": "There is a man wearing a black hoodie and brown pants and walking on the right side of the road, away from the ego car. The pedestrian may step off the sidewalk into the vehicle's path, so the driver should be aware."}
{"id": "train_07959", "split": "train", "clip_key": "2020-0129-144857_005201_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "005201"}, "frames": ["2020-0129-144857_005201_movie_t-3.jpg", "2020-0129-144857_005201_movie_t-2.jpg", "2020-0129-144857_005201_movie_t-1.jpg", "2020-0129-144857_005201_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road with no median curves gently right between mid-rise buildings; the dry pavement looks smooth and traffic is light and moving. A black van ahead in the ego lane pulls away as traffic in front moves, opening a growing gap. Far ahead, an oncoming white truck proceeds in its lane without affecting the ego path. Along the right curb, several light trucks are stopped with cones forming a short work area that narrows the opposite side. A pedestrian walks on the left sidewalk behind a railing and stays off the road. An overhead sign shows a 40 speed limit.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_07960", "split": "train", "clip_key": "2020-0210-155354_046692_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "046692"}, "frames": ["2020-0210-155354_046692_movie_t-3.jpg", "2020-0210-155354_046692_movie_t-2.jpg", "2020-0210-155354_046692_movie_t-1.jpg", "2020-0210-155354_046692_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement carries slow, queued traffic toward a signalized intersection. Flow is heavy and vehicles periodically stop for the light. A silver van directly ahead in the ego lane is stopped for the red light, blocking the path and setting the pace. Along the left curb, a scooter travels slowly past the queue, filtering forward and may reenter the ego lane near the intersection. In the adjacent right lane, a black sedan creeps to a stop beside the ego vehicle, matching the queue and constraining lane changes. Overhead gantry signs point straight ahead, and the traffic signal shows red.", "hazard_reasoning": "There is a silver van stopped in the ego lane, because of the red traffic light ahead. The driver should stop to avoid a collision as traffic ahead is halted at the red light."}
{"id": "train_07961", "split": "train", "clip_key": "2020-0228-150133_017765_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "017765"}, "frames": ["2020-0228-150133_017765_movie_t-3.jpg", "2020-0228-150133_017765_movie_t-2.jpg", "2020-0228-150133_017765_movie_t-1.jpg", "2020-0228-150133_017765_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single lane each direction runs past shops, with no median and smooth pavement; overall traffic is light but the ego lane is blocked. A silver minivan directly ahead in the ego lane is stopped because a bus is stationary just in front of it at the left curb, blocking the path and setting the pace. The bus remains stopped and occupies the lane, preventing forward movement. On the right at a crosswalk across a side street, two pedestrians walk past the corner, staying outside the ego lane. A 40 speed limit sign and a no-parking sign are visible on the left.", "hazard_reasoning": "There is a silver minivan stopped in front of the ego car in the ego lane, because of a parked bus ahead. The driver must stop to maintain a safe distance and avoid colliding with the stationary minivan."}
{"id": "train_07962", "split": "train", "clip_key": "titan_clip_860_000384_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_860_000384_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_860_000384_movie_t-3_augB1.jpg", "titan_clip_860_000384_movie_t-2_augB1.jpg", "titan_clip_860_000384_movie_t-1_augB1.jpg", "titan_clip_860_000384_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban scene shows a narrow two-way street with a single lane in each direction, no median, and smooth pavement; traffic is light with no moving vehicles nearby. On the left side ahead, a pedestrian wearing a blue shirt walks toward the ego vehicle along the roadside, close to the ego lane and directly in its path. A white van is parked along the left curb near the foreground, slightly constricting the passage. Bicycles and storefronts line the right side, but they remain stationary.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking on the left side of the road, towards the ego car. The driver should slow down to avoid a potential collision as the pedestrian may enter the vehicle's path."}
{"id": "train_07963", "split": "train", "clip_key": "2020-0210-155354_016835_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "016835"}, "frames": ["2020-0210-155354_016835_movie_t-3.jpg", "2020-0210-155354_016835_movie_t-2.jpg", "2020-0210-155354_016835_movie_t-1.jpg", "2020-0210-155354_016835_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian approaching crosswalk", "environment_perception": "An urban two-lane road with no median approaches a signalized intersection; the pavement looks smooth and traffic is light, and the signal facing the ego approach shows red. Several pedestrians cross ahead in the marked crosswalk from left to right, occupying the ego path. On the right side of the intersection, a cyclist rides across the crosswalk toward the left, passing in front of the ego vehicle. On the left sidewalk near the crosswalk, a pedestrian wearing a cap and red jacket walks toward the ego-car along the curb. At the right corner, a small truck waits at the side street in a position to enter the ego lane.", "hazard_reasoning": "There is a pedestrian wearing a cap and a red jacket, and walking near the crosswalk, on the left sidewalk, towards the ego-car. The pedestrian is approaching the road and may step out unexpectedly, so the driver should yield to avoid a collision."}
{"id": "train_07964", "split": "train", "clip_key": "titan_clip_1134_000180_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1134_000180_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1134_000180_movie_t-3_augB1.jpg", "titan_clip_1134_000180_movie_t-2_augB1.jpg", "titan_clip_1134_000180_movie_t-1_augB1.jpg", "titan_clip_1134_000180_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A quiet urban residential lane with a single narrow carriageway has no centerline or divider, flanked by concrete walls and dense trees; the pavement is smooth and there are no other vehicles, so traffic is light. The road bends gently to the right ahead, making the space feel tight. Two pedestrians in white T-shirts are ahead in the middle of the lane walking away from the ego vehicle at a relaxed pace, occupying the path and effectively controlling the car's approach speed. No notable signs or signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a white T-shirt and walking in the middle of the road, away from the ego car. The driver should slow down to avoid a potential collision with the pedestrian straying into the vehicle's path."}
{"id": "train_07965", "split": "train", "clip_key": "2020-0226-140503_005213_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "005213"}, "frames": ["2020-0226-140503_005213_movie_t-3.jpg", "2020-0226-140503_005213_movie_t-2.jpg", "2020-0226-140503_005213_movie_t-1.jpg", "2020-0226-140503_005213_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection with tall buildings surrounds the scene; the ego vehicle waits in the left-lane approach on wet pavement as cross traffic flows moderately. A pedestrian wearing all black is crossing the zebra crosswalk directly ahead toward the left side of the road while the light is red, moving across the ego lane. Additional pedestrians with umbrellas cross from the right curb to the left, occupying the crosswalk and keeping the ego car stopped at the line. A white van on the cross street passes through the intersection from left to right ahead, continuing with cross traffic. The overhead signal facing the ego approach shows red.", "hazard_reasoning": "A pedestrian wearing all black is crossing at the pedestrian crosswalk to the left side of the road, because of the red light. The driver should stop to avoid colliding with the pedestrian who has the right of way under the red signal."}
{"id": "train_07966", "split": "train", "clip_key": "2020-0205-152530_063608_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "063608"}, "frames": ["2020-0205-152530_063608_movie_t-3.jpg", "2020-0205-152530_063608_movie_t-2.jpg", "2020-0205-152530_063608_movie_t-1.jpg", "2020-0205-152530_063608_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway segment runs under elevated ramps with two same-direction lanes and a striped gore on the right; the pavement is dry and traffic is heavy and slow. Directly ahead, a white box truck in the ego lane slows because of congestion, constraining the ego vehicle's pace. Ahead-left in the adjacent lane, a small white pickup creeps forward beside the truck, limiting opportunities to change lanes. Farther ahead in that same lane, a blue container truck proceeds slowly and sets the lane's speed. The right-side gore and ramp area remain clear of vehicles.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and avoid a collision under this situation."}
{"id": "train_07967", "split": "train", "clip_key": "2020-0206-101736_058991_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-101736_058991_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-101736_058991_movie_t-3_augB1.jpg", "2020-0206-101736_058991_movie_t-2_augB1.jpg", "2020-0206-101736_058991_movie_t-1_augB1.jpg", "2020-0206-101736_058991_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban two-lane road runs under an elevated expressway, bounded by guardrails with smooth pavement, and traffic is heavy and slowing. A white van ahead in the ego lane slows because of traffic congestion ahead, holding the ego vehicle's pace. A loaded truck slightly ahead to the left in the adjacent lane moves slowly alongside, limiting opportunities to pass. Farther ahead, a line of cars queues under the overpass and inches forward in both lanes. An overhead signal gantry is visible with dark lenses, and a bridge pier stands close to the right shoulder.", "hazard_reasoning": "There is a white van slowing in the ego lane because of traffic congestion ahead. The van's slowdown due to congestion may require you to reduce speed to maintain a safe following distance."}
{"id": "train_07968", "split": "train", "clip_key": "titan_clip_520_000522_movie", "source": {"subset": "titan", "scenario": "clip_520", "frame": "000522"}, "frames": ["titan_clip_520_000522_movie_t-3.jpg", "titan_clip_520_000522_movie_t-2.jpg", "titan_clip_520_000522_movie_t-1.jpg", "titan_clip_520_000522_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban residential two-way road with no median and smooth pavement runs straight ahead, with light traffic as the ego vehicle proceeds along the left side. A white van stands just ahead near the left curb partially in the ego lane, constraining passing space. On the right, a pedestrian wearing a white shirt and blue shorts walks toward the ego car along the curbside. A parked motor scooter lines the right curb opposite the van, creating a brief pinch point. No traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and blue shorts, walking on the right side of the road, toward the ego car. The pedestrian's path brings them into the vehicle's trajectory, so the driver should manoeuvre carefully to avoid a collision."}
{"id": "train_07969", "split": "train", "clip_key": "titan_clip_158_000078_movie", "source": {"subset": "titan", "scenario": "clip_158", "frame": "000078"}, "frames": ["titan_clip_158_000078_movie_t-3.jpg", "titan_clip_158_000078_movie_t-2.jpg", "titan_clip_158_000078_movie_t-1.jpg", "titan_clip_158_000078_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban back street with a single narrow lane and no median shows clean pavement and light traffic as the road curves right around a corner building. A blue van is stopped at the curb on the right, narrowing the lane near the ego path. On the left ahead, a small white truck in the side street rolls slowly and stays out of the ego lane. Near the left curb, a scooter rider waits beside a post box, stationary close to the edge. A no-parking sign and a blue pedestrian sign stand at the corner, and orange cones sit by the shuttered storefront, creating a blind right turn.", "hazard_reasoning": "There is a blue van stopped on the left side of the road. The stopped van narrows the available driving space, so the driver should carefully manoeuvre around it to avoid a collision."}
{"id": "train_07970", "split": "train", "clip_key": "titan_clip_835_000072_movie", "source": {"subset": "titan", "scenario": "clip_835", "frame": "000072"}, "frames": ["titan_clip_835_000072_movie_t-3.jpg", "titan_clip_835_000072_movie_t-2.jpg", "titan_clip_835_000072_movie_t-1.jpg", "titan_clip_835_000072_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban shopping street with brick-pattern pavement functions as a narrow shared roadway without lane markings or a divider, and traffic is light and slow as the road bends gently left past storefronts. A cyclist in a white T-shirt and gray skirt rides toward the ego car in the middle of the road, approaching the ego's path. A pedestrian near the right curb steps into the street and walks leftward across the lane ahead, reducing available space. Two more pedestrians on the right edge walk along the storefront toward the camera while staying close to the curb and not entering the lane. Parked bicycles and curbside signboards line both sides, slightly constricting the roadway.", "hazard_reasoning": "There is a cyclist wearing a white t-shirt and gray skirt, cycling in the middle of the road, toward the ego car. The cyclist is occupying the center of the path and approaching the vehicle's direction, so manoeuvring around them is necessary to avoid a collision."}
{"id": "train_07971", "split": "train", "clip_key": "titan_clip_1282_000354_movie", "source": {"subset": "titan", "scenario": "clip_1282", "frame": "000354"}, "frames": ["titan_clip_1282_000354_movie_t-3.jpg", "titan_clip_1282_000354_movie_t-2.jpg", "titan_clip_1282_000354_movie_t-1.jpg", "titan_clip_1282_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban shopping street with a single undivided lane and worn asphalt shows very light vehicular traffic. Ahead in the lane, a man with two children walks away near the center, constraining the ego vehicle's pace. On the left edge, a pedestrian in a white shirt and black pants walks away from the ego car along the curb. From the left foreground, three pedestrians cross toward the right midblock and may enter the ego lane. A small delivery truck is stopped along the right curb, encroaching into the roadway and further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre to maintain a safe distance and avoid colliding with the pedestrian."}
{"id": "train_07972", "split": "train", "clip_key": "2020-0206-101736_013851_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "013851"}, "frames": ["2020-0206-101736_013851_movie_t-3.jpg", "2020-0206-101736_013851_movie_t-2.jpg", "2020-0206-101736_013851_movie_t-1.jpg", "2020-0206-101736_013851_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck.", "environment_perception": "A dense urban neighborhood is shown on a narrow two-way road with one lane each way, no median, and smooth pavement; traffic stays light. In the ego lane ahead, a blue truck is parked by the left curb, occupying part of the lane and forming an obstruction. A white van farther ahead in the same direction slows near this truck, constraining the ego vehicle's pace. On the right side ahead, two pedestrians walk along the sidewalk close to the curb without entering the roadway. No traffic signals or speed signs are clearly visible, and no oncoming vehicles appear.", "hazard_reasoning": "There is a blue truck parked in the ego lane, in front of the ego car. The driver should carefully manoeuvre to avoid collision with the stationary vehicle ahead."}
{"id": "train_07973", "split": "train", "clip_key": "2020-0220-151845_062656_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "062656"}, "frames": ["2020-0220-151845_062656_movie_t-3.jpg", "2020-0220-151845_062656_movie_t-2.jpg", "2020-0220-151845_062656_movie_t-1.jpg", "2020-0220-151845_062656_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban covered roadway or tunnel carries multiple same-direction lanes with dry pavement and heavy stop-and-go flow. A red flatbed truck with a tarped load is stopped directly ahead in the ego lane, holding the ego car in place. To the right, a white mini-van is alongside and creeps forward in the adjacent lane, limiting room to merge. Farther ahead in the right lane, a dark sedan and other cars queue closely and inch ahead, forming the bottleneck. Metal barriers line the left side and no oncoming traffic is visible.", "hazard_reasoning": "There is a red truck stopped in the ego lane, in front of the ego car. You should stop because the red truck is stationary ahead in your lane, creating a collision risk."}
{"id": "train_07974", "split": "train", "clip_key": "2020-0213-143552_056728_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "056728"}, "frames": ["2020-0213-143552_056728_movie_t-3.jpg", "2020-0213-143552_056728_movie_t-2.jpg", "2020-0213-143552_056728_movie_t-1.jpg", "2020-0213-143552_056728_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes meets a signalized intersection with a central median; pavement is smooth, and traffic is moderate as vehicles begin to move on green. Ahead in the ego lane, a gray box truck accelerates from the stop line because the traffic light has turned green, leading the ego through the junction. Slightly ahead to the left, a silver minivan in the adjacent curbside lane also moves straight, remaining parallel and not entering the ego lane. From the opposite direction, a white car proceeds through the intersection without conflict. At the right curb near the corner, a small flatbed truck waits by the median outside the ego path. The overhead signal facing the ego shows green.", "hazard_reasoning": "There is a gray truck accelerating ahead of the ego-car in the ego-lane because the traffic light has turned green. Its sudden acceleration may create a gap if you lag behind, so follow the vehicle ahead to maintain safety."}
{"id": "train_07975", "split": "train", "clip_key": "titan_clip_590_000378_movie", "source": {"subset": "titan", "scenario": "clip_590", "frame": "000378"}, "frames": ["titan_clip_590_000378_movie_t-3.jpg", "titan_clip_590_000378_movie_t-2.jpg", "titan_clip_590_000378_movie_t-1.jpg", "titan_clip_590_000378_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately for the crossing pedestrian", "environment_perception": "An urban narrow two-way street with no divider runs between low buildings; the pavement is smooth and traffic is very light. A pedestrian ahead enters from the left and crosses in front of the ego vehicle toward the right, wearing black pants and a white shirt, briefly occupying the lane. Another pedestrian is farther ahead near the right curb by parked vans, moving slowly but staying clear of the roadway. Several vehicles are parked along the right edge, slightly narrowing the passage, and a small side street intersects from the left. A parking sign is visible on the right.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, crossing the street in front of the ego car, from the left side of the street to the right side. The driver should stop to avoid hitting the pedestrian who is entering the lane."}
{"id": "train_07976", "split": "train", "clip_key": "2020-0131-135401_006136_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "006136"}, "frames": ["2020-0131-135401_006136_movie_t-3.jpg", "2020-0131-135401_006136_movie_t-2.jpg", "2020-0131-135401_006136_movie_t-1.jpg", "2020-0131-135401_006136_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban two-way street with one narrow lane in each direction and smooth pavement is shown, with no oncoming traffic visible and strong sun glare from the right. A white box truck is stopped directly ahead in the ego lane, occupying the path and constraining the ego vehicle. On the left sidewalk near the curb, a pedestrian walks along the street but stays off the roadway. An overhead sign indicates a 40 km/h speed limit.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The truck's sudden stop poses a collision risk if the driver does not brake promptly under this scenario."}
{"id": "train_07977", "split": "train", "clip_key": "2020-0228-102841_046159_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "046159"}, "frames": ["2020-0228-102841_046159_movie_t-3.jpg", "2020-0228-102841_046159_movie_t-2.jpg", "2020-0228-102841_046159_movie_t-1.jpg", "2020-0228-102841_046159_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes and opposing lanes to the right approaches a signalized intersection beneath an elevated structure; the pavement is smooth and traffic is moderate and steady. A silver van directly ahead in the ego lane accelerates from the stop line and leads the ego vehicle. To the right, a white SUV in the adjacent lane proceeds slightly ahead, continuing through the junction alongside the ego's path. Farther ahead beyond the crosswalk, a line of same-direction cars moves steadily and sets the overall pace. The overhead traffic signal facing the ego direction shows green.", "hazard_reasoning": "There is a silver van accelerating in front of the ego car, in the ego lane. The green signal means the lights have just turned green, so the driver should start moving to keep pace and avoid impeding traffic flow."}
{"id": "train_07978", "split": "train", "clip_key": "2020-0212-102546_031881_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "031881"}, "frames": ["2020-0212-102546_031881_movie_t-3.jpg", "2020-0212-102546_031881_movie_t-2.jpg", "2020-0212-102546_031881_movie_t-1.jpg", "2020-0212-102546_031881_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop for stopped truck ahead.", "environment_perception": "An urban multi-lane road with smooth pavement and no median is shown, and same-direction traffic is heavy with a long queue ahead. Directly ahead in the ego lane, a white box truck is stopped because congestion blocks the lane and it holds the ego vehicle's pace. In the lane to the right, a small bus and several cars inch forward beside the queue, remaining slow and close under the same jam. Along the right curb, a large truck and other cars stand in the curb lane, narrowing space. Overhead directional signs are visible above the roadway.", "hazard_reasoning": "There is a white truck that has stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The white truck is halted due to congestion, so the driver must stop to avoid a rear-end collision."}
{"id": "train_07979", "split": "train", "clip_key": "2020-0204-103442_015644_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "015644"}, "frames": ["2020-0204-103442_015644_movie_t-3.jpg", "2020-0204-103442_015644_movie_t-2.jpg", "2020-0204-103442_015644_movie_t-1.jpg", "2020-0204-103442_015644_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, with three same-direction lanes and a curbside sidewalk; the dry pavement is smooth and traffic is heavy and slow. Directly ahead, a black SUV is stopped in the ego lane because of traffic congestion ahead, holding the ego car in place. To the right, a silver microvan inches forward in the adjacent lane alongside the ego vehicle, constraining any lane change. On the left sidewalk behind a railing, several pedestrians walk along and wait near bicycles, remaining clear of the roadway.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car in the ego lane because of traffic congestion ahead. The driver must stop to maintain a safe following distance and avoid a rear-end collision under these slow-moving conditions."}
{"id": "train_07980", "split": "train", "clip_key": "titan_clip_614_000528_movie", "source": {"subset": "titan", "scenario": "clip_614", "frame": "000528"}, "frames": ["titan_clip_614_000528_movie_t-3.jpg", "titan_clip_614_000528_movie_t-2.jpg", "titan_clip_614_000528_movie_t-1.jpg", "titan_clip_614_000528_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban street with a single shared lane and no centerline runs between mid-rise buildings; the pavement is patched but usable and traffic is light with no moving vehicles nearby. Ahead on the left, a red and white truck is parked on the left side of the lane while being unloaded, its open rear and body jutting into the lane and reducing the available space. Next to it, a worker on the roadway lifts and moves boxes, lingering near the ego path and may step further into it. Several boxes and a hand cart sit on the asphalt as small obstacles, while parked bicycles and storefront signboards further tighten the corridor.", "hazard_reasoning": "A red and white truck is parked on the left side of the lane, because the truck is being unloaded. This parked vehicle partially obstructs the lane and reduces visibility, so the driver should manoeuvre carefully around it to avoid collisions."}
{"id": "train_07981", "split": "train", "clip_key": "titan_clip_256_000462_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_256_000462_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_256_000462_movie_t-3_augB1.jpg", "titan_clip_256_000462_movie_t-2_augB1.jpg", "titan_clip_256_000462_movie_t-1_augB1.jpg", "titan_clip_256_000462_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian.", "environment_perception": "An urban commercial side street with no centerline and smooth pavement is seen in bright daylight; the narrow roadway offers limited sidewalk space, and traffic is light. Ahead in the middle of the road, a pedestrian in a white shirt and black pants walks away from the ego car, using the carriageway because there is no sidewalk and occupying the ego path. A dark van is parked along the right edge close to the ego vehicle, reducing the available width. Farther ahead, a small delivery truck stops in the lane with a worker nearby and a cone at its rear, further constricting the passage while same-direction traffic remains minimal.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants and walking in the middle of the road away from the ego car, because there is no sidewalk. The driver should yield because the pedestrian is walking on the road and may cross into the vehicle's path."}
{"id": "train_07982", "split": "train", "clip_key": "titan_clip_1351_000312_movie", "source": {"subset": "titan", "scenario": "clip_1351", "frame": "000312"}, "frames": ["titan_clip_1351_000312_movie_t-3.jpg", "titan_clip_1351_000312_movie_t-2.jpg", "titan_clip_1351_000312_movie_t-1.jpg", "titan_clip_1351_000312_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Yield to cyclist", "environment_perception": "An urban narrow two-way street with a solid double center line leads toward a small underpass; pavement is smooth and traffic is light, though parked work trucks constrict the right side. Ahead on the left edge, a cyclist in a black shirt rides away from the ego vehicle, keeping near the curb because construction activity and trucks occupy the right, and the rider may dictate the ego's speed. On the right, a white flatbed and other construction vehicles stand stopped partly in the oncoming lane, narrowing the roadway before the underpass. Farther ahead by the center line, a pedestrian walks away toward the underpass within the roadway, close to the ego path.", "hazard_reasoning": "There is a cyclist wearing a black shirt and cycling away from the ego car, on the left side of the road, because of construction work on the right. The cyclist is forced into the driving lane by the construction, increasing collision risk; you should yield to allow safe passage."}
{"id": "train_07983", "split": "train", "clip_key": "2020-0220-151845_004246_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "004246"}, "frames": ["2020-0220-151845_004246_movie_t-3.jpg", "2020-0220-151845_004246_movie_t-2.jpg", "2020-0220-151845_004246_movie_t-1.jpg", "2020-0220-151845_004246_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrians at crosswalk", "environment_perception": "An urban arterial with three same-direction lanes and a red-colored curb lane approaches a wide signalized intersection, with no median and smooth pavement; traffic is light to moderate and flows steadily. A city bus ahead in the center lane moves straight through the junction, leading the queue and mildly constraining the ego vehicle's pace. On the far right near the crosswalk, a cyclist rolls forward toward the intersection and may enter the crossing close to the path of turning vehicles. On the left side at the crosswalk, a group of pedestrians in dark or black shirts waits to cross. The signal facing the ego approach shows green.", "hazard_reasoning": "There is a group of pedestrians, wearing a black shirt, waiting to cross the street at the crosswalk, on the left side of the road. Drivers should be cautious of their potential movement into the roadway to avoid sudden stops or collisions."}
{"id": "train_07984", "split": "train", "clip_key": "2020-0129-144857_070553_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "070553"}, "frames": ["2020-0129-144857_070553_movie_t-3.jpg", "2020-0129-144857_070553_movie_t-2.jpg", "2020-0129-144857_070553_movie_t-1.jpg", "2020-0129-144857_070553_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of overtaking truck", "environment_perception": "An urban multi-lane arterial with three lanes each way is divided by flexible pylons, and the pavement is dry and in good condition. Traffic is moderate and moves steadily. To the near left, a blue truck in the adjacent left lane overtakes and passes the ego-vehicle. A white car travels ahead in the ego lane at a steady speed, effectively setting the pace with a moderate gap. On the opposite side of the divider, oncoming cars approach in their right-side lanes and move freely without interaction. A posted 50 sign is visible on a roadside pole, and a distant signal hangs over the intersection ahead.", "hazard_reasoning": "There's a blue truck in the left lane that is overtaking the ego-car, and passing it. The truck's overtaking maneuver may encroach on your lane, so you should be aware to maintain a safe distance."}
{"id": "train_07985", "split": "train", "clip_key": "titan_clip_483_000468_movie", "source": {"subset": "titan", "scenario": "clip_483", "frame": "000468"}, "frames": ["titan_clip_483_000468_movie_t-3.jpg", "titan_clip_483_000468_movie_t-2.jpg", "titan_clip_483_000468_movie_t-1.jpg", "titan_clip_483_000468_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the pedestrian", "environment_perception": "A narrow urban street with buildings close to the curb carries a single left-side travel lane with no median; the pavement is dry and smooth and traffic is light as the vehicle proceeds steadily forward. A pedestrian wearing a black shirt and brown pants and carrying a handbag walks toward the ego car along the left edge of the road, close enough that they may enter the lane. A small car ahead in the same lane continues straight at low speed, setting the pace. On the right, a few pedestrians linger near the curb by a silver van in a recessed bay, moving about but remaining off the roadway. Parked scooters and shopfronts line the left curb near the camera, slightly narrowing the margin.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and brown pants, and carrying a handbag walking toward the ego car on the left side of the road. The driver should yield because the pedestrian is entering the vehicle's path and may collide if not given right of way."}
{"id": "train_07986", "split": "train", "clip_key": "2020-0226-101332_016677_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "016677"}, "frames": ["2020-0226-101332_016677_movie_t-3.jpg", "2020-0226-101332_016677_movie_t-2.jpg", "2020-0226-101332_016677_movie_t-1.jpg", "2020-0226-101332_016677_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane approach to a signalized intersection, two-way with no median, shows damp pavement and light traffic. A black taxi van directly ahead in the ego lane is stopped because the traffic light is red, holding the ego vehicle. To the right, a yellow taxi waits motionless at the stop line in the adjacent lane. Through the cross street, a large dump truck moves left to right across the junction while our approach remains halted. The signal facing the ego direction displays a red aspect.", "hazard_reasoning": "There is a back van stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid a collision and comply with the traffic signal."}
{"id": "train_07987", "split": "train", "clip_key": "2020-0226-101332_015884_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "015884"}, "frames": ["2020-0226-101332_015884_movie_t-3.jpg", "2020-0226-101332_015884_movie_t-2.jpg", "2020-0226-101332_015884_movie_t-1.jpg", "2020-0226-101332_015884_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cones ahead", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway and railings on both sides has damp pavement and light traffic. Orange traffic cones line the right edge of the ego lane through a red-painted section, narrowing the path. A yellow sedan directly ahead in the ego lane rolls slowly and then pauses near the intersection, constraining the ego vehicle's pace. Farther ahead in the same lane, a white van waits near the signal at the end of the block, forming a short queue. Oncoming traffic is not present in the adjacent lane. A blue keep-left sign is posted and a no entry sign marks the right-side side street.", "hazard_reasoning": "There are orange traffic cones on the right side of the ego lane. The driver should be aware of these cones as they indicate potential lane narrowing or upcoming construction that may require adjusting speed or course."}
{"id": "train_07988", "split": "train", "clip_key": "titan_clip_565_000162_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_565_000162_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_565_000162_movie_t-3_augB1.jpg", "titan_clip_565_000162_movie_t-2_augB1.jpg", "titan_clip_565_000162_movie_t-1_augB1.jpg", "titan_clip_565_000162_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision with pedestrian.", "environment_perception": "An urban shopping alley with a single narrow shared lane and no divider runs between storefronts; the block-paved surface is even, and vehicular traffic is absent while foot traffic is moderate. A pedestrian in the middle of the lane ahead walks toward the camera, wearing green pants and carrying a handbag, directly occupying the ego vehicle's path. On the right edge near and slightly ahead, two other pedestrians approach toward the ego position, drifting into the lane and constraining the available space. Farther ahead near the left curb, another person walks away along the edge without affecting the path.", "hazard_reasoning": "A pedestrian wearing a a handbag and green pants is walking in the middle of the lane toward the ego car. The pedestrian's position directly in the vehicle's path creates a collision risk, so the driver should slow down to maintain safety."}
{"id": "train_07989", "split": "train", "clip_key": "titan_clip_1383_000582_movie", "source": {"subset": "titan", "scenario": "clip_1383", "frame": "000582"}, "frames": ["titan_clip_1383_000582_movie_t-3.jpg", "titan_clip_1383_000582_movie_t-2.jpg", "titan_clip_1383_000582_movie_t-1.jpg", "titan_clip_1383_000582_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to the crossing pedestrian.", "environment_perception": "A narrow urban commercial street with a single bidirectional lane, no median, and smooth asphalt appears, with light vehicle traffic but many pedestrians as the ego car approaches a small intersection. A pedestrian wearing a striped shirt and black pants crosses ahead from the left side of the intersection to the right, entering the ego vehicle's path. A box truck stands ahead along the left curb with its rear near the lane, partially blocking the way and narrowing the passage. Two pedestrians are in the roadway farther ahead, walking away near the centerline, which constrains the ego vehicle's pace.", "hazard_reasoning": "There is a pedestrian wearing a stripped shirt and black pants and crossing the street in front of the ego car from the left side of the intersection to the right side. The pedestrian is crossing directly in front of your vehicle, requiring you to yield to avoid a collision."}
{"id": "train_07990", "split": "train", "clip_key": "2020-0205-103411_040322_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "040322"}, "frames": ["2020-0205-103411_040322_movie_t-3.jpg", "2020-0205-103411_040322_movie_t-2.jpg", "2020-0205-103411_040322_movie_t-1.jpg", "2020-0205-103411_040322_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multilane arterial with a central fenced median and dry pavement shows heavy, stop-and-go flow in the ego direction. A black hatchback is stopped directly ahead in the ego lane because of congestion, holding the ego car. In the adjacent left lane, a blue car and a dark hatchback crawl forward alongside the queue, keeping pace and limiting lateral room. On the opposite side of the median, oncoming traffic moves slowly toward the camera, including a small black car, but it remains separated and does not affect the ego's path.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Driver should stop immediately to avoid a collision with the stationary vehicle under congestion conditions."}
{"id": "train_07991", "split": "train", "clip_key": "2020-0207-151349_020821_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "020821"}, "frames": ["2020-0207-151349_020821_movie_t-3.jpg", "2020-0207-151349_020821_movie_t-2.jpg", "2020-0207-151349_020821_movie_t-1.jpg", "2020-0207-151349_020821_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and a right-side curb barrier appears, the pavement is smooth and traffic is heavy and slow. A white box truck directly ahead in the ego lane is stopped, queuing in congestion and holding the ego vehicle. In the adjacent left lane, a black taxi alongside creeps forward, limiting any lane change. In the right lane, a smaller covered truck ahead moves slowly past, remaining parallel to the jam. Overhead Japanese direction signs span the roadway, and pedestrians walk on the raised sidewalk behind the barrier to the right.", "hazard_reasoning": "There's a white truck that has stopped in front of the ego-car in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid colliding with the stopped vehicle."}
{"id": "train_07992", "split": "train", "clip_key": "2020-0131-103016_010820_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "010820"}, "frames": ["2020-0131-103016_010820_movie_t-3.jpg", "2020-0131-103016_010820_movie_t-2.jpg", "2020-0131-103016_010820_movie_t-1.jpg", "2020-0131-103016_010820_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the black van.", "environment_perception": "An urban multilane road runs under a steel overpass with smooth pavement and moderate traffic. Ahead in the left lane, a white box truck slows beneath the bridge and sets the pace. Ahead-left, a black van continues in that lane as the ego-car merges into the lane behind the black van. Ahead-center, a white sedan shifts left across lanes toward the same lane under the bridge, momentarily occupying the ego path. A 4.0 m clearance sign is posted on the overpass.", "hazard_reasoning": "The ego-car is merging into a lane behind a black van. Yielding will maintain safe distance and prevent a collision during the merge."}
{"id": "train_07993", "split": "train", "clip_key": "titan_clip_1283_000306_movie", "source": {"subset": "titan", "scenario": "clip_1283", "frame": "000306"}, "frames": ["titan_clip_1283_000306_movie_t-3.jpg", "titan_clip_1283_000306_movie_t-2.jpg", "titan_clip_1283_000306_movie_t-1.jpg", "titan_clip_1283_000306_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with shopfronts and an elevated structure ahead has smooth pavement and no divider; traffic is light with no oncoming vehicles visible. Ahead in the ego lane, a pedestrian wearing a brown shirt walks away from the car along the center of the lane, directly in the vehicle's path. Alongside him, a child crosses from the right to the left ahead, also moving away and staying in front of the car. On the right edge, a stopped delivery truck protrudes into the lane, narrowing the road where the pedestrians pass.", "hazard_reasoning": "There is a pedestrian wearing a brown shirt and walking in front of and away from the ego car. The pedestrian may step into the roadway unexpectedly from the sidewalk, so the driver should slow down to ensure sufficient reaction time."}
{"id": "train_07994", "split": "train", "clip_key": "titan_clip_849_000192_movie", "source": {"subset": "titan", "scenario": "clip_849", "frame": "000192"}, "frames": ["titan_clip_849_000192_movie_t-3.jpg", "titan_clip_849_000192_movie_t-2.jpg", "titan_clip_849_000192_movie_t-1.jpg", "titan_clip_849_000192_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A dense urban shopping street with a narrow single shared lane and no median is paved with smooth bricks; vehicle traffic is light while pedestrian activity is moderate. Two large box trucks are stopped along the right side, narrowing the lane and creating a partial blind edge. On the left edge near the ego vehicle, a pedestrian carrying a handbag walks toward the ego car along the roadway because there is no sidewalk, bringing her path close to the vehicle's line. Farther ahead near the center, another pedestrian walks toward the camera within the lane and may occupy the ego path. On the right beside the trucks, a person handles packages and moves near the curb.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking on the left side of the road, toward the ego car, because there is no sidewalk. The driver should manoeuvre carefully around the pedestrian to avoid a collision because they are walking on the roadway without a sidewalk."}
{"id": "train_07995", "split": "train", "clip_key": "titan_clip_749_000504_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_749_000504_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_749_000504_movie_t-3_augB1.jpg", "titan_clip_749_000504_movie_t-2_augB1.jpg", "titan_clip_749_000504_movie_t-1_augB1.jpg", "titan_clip_749_000504_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the worker", "environment_perception": "An urban two-way side street with no center divider is partially blocked by a curbside work zone; the pavement is intact and traffic is light and slow. On the left ahead, a man wearing a blue shirt and pants, a white helmet, and a yellow vest stands in front of the ego car directing traffic around the work zone, controlling the vehicle's pace. Farther ahead near the center-right, several pedestrians walk away along the roadway past the trucks and could drift into the ego path. Another worker stands beside a blue mixer truck on the left close to the lane, monitoring passing vehicles. Green-white cones, ropes, and parked construction trucks narrow the left side, and a parked bicycle and shopfront fixtures line the right edge.", "hazard_reasoning": "There is man, wearing a blue shirt and pants, a white helmet and yellow vest, standing on the left side of the road, in front of the ego car, because he is directing traffic. The worker is directing traffic and may step into the vehicle's path, so the driver must manoeuvre around him to maintain safety."}
{"id": "train_07996", "split": "train", "clip_key": "2020-0205-152530_026230_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "026230"}, "frames": ["2020-0205-152530_026230_movie_t-3.jpg", "2020-0205-152530_026230_movie_t-2.jpg", "2020-0205-152530_026230_movie_t-1.jpg", "2020-0205-152530_026230_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with three same-direction lanes, smooth dry pavement, and moderate steady flow. A black van drives ahead in the ego lane and moves away slightly, effectively setting the pace. To the left, a gray sedan a short distance ahead cruises in the adjacent lane amid a small queue, limiting an easy pass. A white minivan is close along the far-left lane beside the ego vehicle, traveling parallel without noticeable speed change. Overhead blue guide signs are visible ahead, guardrails line the right side near the viaduct, and no pedestrians, cyclists, or unusual hazards appear.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. The black van ahead may change speed or brake unexpectedly, so maintain a cautious distance."}
{"id": "train_07997", "split": "train", "clip_key": "titan_clip_767_000528_movie", "source": {"subset": "titan", "scenario": "clip_767", "frame": "000528"}, "frames": ["titan_clip_767_000528_movie_t-3.jpg", "titan_clip_767_000528_movie_t-2.jpg", "titan_clip_767_000528_movie_t-1.jpg", "titan_clip_767_000528_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban residential scene shows the ego vehicle at a narrow two-way intersection with no divider, smooth pavement, and very light traffic; no vehicles pass in either direction. The cross street runs straight ahead, and a large painted stop instruction is visible on the ego approach. On the right at the crosswalk, a pedestrian in black pants and black shoes walks from right to left while looking at a phone, potentially entering the ego vehicle's path across the lane. Bicycles are parked by the left-side shopfront outside the roadway.", "hazard_reasoning": "There is a pedestrian on the right side of the road wearing black pants, black shoes, and looking at their phone while walking from the right side because there is a crosswalk at that point. The driver should stop to yield to the pedestrian who may step onto the crosswalk without noticing oncoming traffic."}
{"id": "train_07998", "split": "train", "clip_key": "titan_clip_706_000366_movie", "source": {"subset": "titan", "scenario": "clip_706", "frame": "000366"}, "frames": ["titan_clip_706_000366_movie_t-3.jpg", "titan_clip_706_000366_movie_t-2.jpg", "titan_clip_706_000366_movie_t-1.jpg", "titan_clip_706_000366_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian", "environment_perception": "A narrow urban shopping street with a single undivided lane and smooth pavement shows very light traffic, with no vehicles ahead or oncoming as the road continues straight before a gentle bend. On the right ahead, a pedestrian wearing a black jacket walks away along the edge of the lane, close to the travel path. On the left foreground, a person at a storefront stands by the curb handling items and remains stationary. Farther ahead on the left, another person lingers near a small cart at the curb. Green traffic cones and shop displays line the right margin, slightly narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black jacket and walking on the right side of the road, away from the ego car. The pedestrian could change direction unexpectedly or step onto the road, so the driver should be aware to anticipate any sudden movement."}
{"id": "train_07999", "split": "train", "clip_key": "2020-0218-151547_020083_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "020083"}, "frames": ["2020-0218-151547_020083_movie_t-3.jpg", "2020-0218-151547_020083_movie_t-2.jpg", "2020-0218-151547_020083_movie_t-1.jpg", "2020-0218-151547_020083_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway ramp runs under a dense elevated structure, with two same-direction lanes, a concrete wall on the left and a guardrail on the right; the smooth pavement follows a gentle right bend and traffic is light and steady. A small flatbed truck travels ahead in the adjacent right lane, holding its lane and speed without impeding the ego vehicle. Farther ahead in the ego (left) lane, a white passenger car continues straight and effectively sets the following distance. Blue overhead direction signs are visible ahead, and there are no pedestrians, cyclists, or obstacles in the corridor.", "hazard_reasoning": "The caption is empty and no risks are indicated, showing there are no immediate hazards. The road conditions are stable and clear, so no warning is necessary."}
{"id": "train_08000", "split": "train", "clip_key": "2020-0207-151349_027427_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "027427"}, "frames": ["2020-0207-151349_027427_movie_t-3.jpg", "2020-0207-151349_027427_movie_t-2.jpg", "2020-0207-151349_027427_movie_t-1.jpg", "2020-0207-151349_027427_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop promptly to avoid collision.", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with the ego in the leftmost lane beside a sidewalk and guardrail; the pavement looks smooth and overall traffic is heavy and mostly stopped. A white box truck directly ahead in the ego lane is stopped because of congestion and holds the ego car in place. In the adjacent right lane, a silver hatchback slightly ahead is also stopped in the queue, limiting room for the ego to change lanes. A darker sedan farther right waits in the same queue, pacing the vehicles alongside. Strong sun glare from ahead-left reduces contrast and visibility.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. This stopped truck obstructs the lane and reduces visibility for the driver, increasing the risk of a rear-end collision, so drivers should stop promptly under this situation to maintain safety."}
{"id": "train_08001", "split": "train", "clip_key": "2020-0228-102841_001157_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_001157_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_001157_movie_t-3_augB1.jpg", "2020-0228-102841_001157_movie_t-2_augB1.jpg", "2020-0228-102841_001157_movie_t-1_augB1.jpg", "2020-0228-102841_001157_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban backstreet with a very narrow two-way road lacks a center line; the dry pavement is slightly worn and traffic is light. A pedestrian ahead, wearing brown trousers, a black top, and black shoes, walks away in the middle of the ego lane, occupying the path and constraining the ego vehicle's pace. Farther ahead, a small dark van is stopped in the lane near the end of the alley, further limiting passage in the same direction. An unsignalized side street opens on the right, while bollards along the left curb and close storefronts make the corridor tight.", "hazard_reasoning": "There is a pedestrian wearing a pair of brown trousers, a black top, black shoes, walking in the ego lane. The pedestrian is walking directly in the vehicle's lane, requiring a careful manoeuvre to avoid collision under this situation."}
{"id": "train_08002", "split": "train", "clip_key": "titan_clip_218_000054_movie", "source": {"subset": "titan", "scenario": "clip_218", "frame": "000054"}, "frames": ["titan_clip_218_000054_movie_t-3.jpg", "titan_clip_218_000054_movie_t-2.jpg", "titan_clip_218_000054_movie_t-1.jpg", "titan_clip_218_000054_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked van", "environment_perception": "A narrow urban street with a single travel lane and brick paving runs between tall buildings; traffic is light and the pavement looks smooth with no median. A gray van is parked along the left curb just ahead, narrowing the lane and shaping the ego vehicle's path. Two pedestrians on the right sidewalk near the camera walk toward us alongside the curb, close to the edge but remaining off the roadway. Farther ahead on the left, several pedestrians move along the storefronts and one lingers near the roadway at the van's rear, close to the travel path. A small white car farther ahead continues away in the same lane without affecting pace.", "hazard_reasoning": "There is a gray van parked on the left side of the road. The parked van narrows the drivable space, so the driver should manoeuvre carefully to avoid a collision when passing it."}
{"id": "train_08003", "split": "train", "clip_key": "titan_clip_527_000114_movie", "source": {"subset": "titan", "scenario": "clip_527", "frame": "000114"}, "frames": ["titan_clip_527_000114_movie_t-3.jpg", "titan_clip_527_000114_movie_t-2.jpg", "titan_clip_527_000114_movie_t-1.jpg", "titan_clip_527_000114_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of pedestrian waiting to cross", "environment_perception": "An urban two-way street with one narrow lane in each direction runs between mid-rise buildings, the pavement is smooth, and traffic is light with steady flow in the left lane. Ahead in the ego lane, a small flatbed truck proceeds toward the underpass and slows slightly, setting the pace. On the right in the oncoming lane, a white truck stands stopped at the curb and narrows that side of the roadway as the ego approaches. On the left curb near mid-distance, a pedestrian wearing a white T-shirt and a helmet waits to cross to the right where there is no crosswalk and may step into the ego lane. Parked cars line both sides, further constricting the corridor.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and helmet, waiting to cross from the left side of the road to the right side, because there is no crosswalk. The driver should be cautious because the pedestrian may enter the roadway unexpectedly in an area without a designated crossing."}
{"id": "train_08004", "split": "train", "clip_key": "2020-0129-105040_005060_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "005060"}, "frames": ["2020-0129-105040_005060_movie_t-3.jpg", "2020-0129-105040_005060_movie_t-2.jpg", "2020-0129-105040_005060_movie_t-1.jpg", "2020-0129-105040_005060_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes runs alongside a planted median with a guardrail; the pavement is dry and traffic flows at a steady, moderate pace. A small silver van directly ahead in the ego lane next to the median continues straight and leads the ego vehicle. In the adjacent left lane, a larger white box truck ahead travels at a similar speed, loosely pacing the ego car and limiting an immediate lane change. A white service van farther left near the curb also proceeds straight without encroaching. Oncoming traffic, including several trucks, moves along the opposite carriageway beyond the median with no interaction. Overhead blue guide signs are present; no signal is clearly visible.", "hazard_reasoning": "There is a silver van driving in the ego lane, in front of the ego car, because the traffic light is green. Following this vehicle maintains a safe distance and ensures compliance with the green signal."}
{"id": "train_08005", "split": "train", "clip_key": "2020-0205-103411_016136_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "016136"}, "frames": ["2020-0205-103411_016136_movie_t-3.jpg", "2020-0205-103411_016136_movie_t-2.jpg", "2020-0205-103411_016136_movie_t-1.jpg", "2020-0205-103411_016136_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane divided arterial with a metal fence median runs through dense buildings; the pavement is clean and traffic in the ego direction is heavy and slow. A black van directly ahead in the ego lane is stopped with its high-mounted brake light on, held by congestion ahead, constraining the ego car. A white-and-teal van slightly ahead to the left in the adjacent lane creeps forward in the queue, limiting room to merge left. Across the fence to the right, oncoming cars, including a white van, move past at a steady pace without affecting the ego lane. Overhead blue direction signs are visible above the roadway.", "hazard_reasoning": "There is a black van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a collision with the halted vehicle."}
{"id": "train_08006", "split": "train", "clip_key": "2020-0207-101955_109918_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "109918"}, "frames": ["2020-0207-101955_109918_movie_t-3.jpg", "2020-0207-101955_109918_movie_t-2.jpg", "2020-0207-101955_109918_movie_t-1.jpg", "2020-0207-101955_109918_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane road runs under an elevated structure, with smooth pavement and a right-side guardrail; traffic is moderate and briefly compresses. A blue sedan directly ahead in the ego lane slows as a large white box truck farther ahead in the same lane reduces speed, constraining the ego vehicle. To the right, a white van in the adjacent lane travels slightly faster while maintaining its lane alongside. Farther ahead, several cars in the neighboring lanes follow the truck's pace with short gaps. No salient signals or hazards are visible.", "hazard_reasoning": "There is a blue sedan slowing in front of the ego car, in the ego lane, because of a truck slowing ahead. The blue sedan's deceleration indicates that the traffic ahead is braking, so the driver should maintain safe distance and follow the vehicle ahead."}
{"id": "train_08007", "split": "train", "clip_key": "2020-0206-101736_084095_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "084095"}, "frames": ["2020-0206-101736_084095_movie_t-3.jpg", "2020-0206-101736_084095_movie_t-2.jpg", "2020-0206-101736_084095_movie_t-1.jpg", "2020-0206-101736_084095_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial without a physical median approaches a wide signalized intersection; the pavement is dry and traffic is moderate, moving under a green light. A white flatbed truck directly ahead in the ego lane continues straight through on green, leading the ego vehicle's path. Slightly ahead to the left, a black hatchback in the adjacent same-direction lane proceeds forward at similar speed, staying alongside. Farther ahead in a right same-direction lane, a large bus travels straight through the junction and sets the pace for that lane.", "hazard_reasoning": "There is a white truck in forward motion in the ego lane in front of the ego car, because of the green traffic light. The truck may block visibility of the road ahead, so the driver should be aware of its position and potential hidden hazards."}
{"id": "train_08008", "split": "train", "clip_key": "2020-0207-101955_015792_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "015792"}, "frames": ["2020-0207-101955_015792_movie_t-3.jpg", "2020-0207-101955_015792_movie_t-2.jpg", "2020-0207-101955_015792_movie_t-1.jpg", "2020-0207-101955_015792_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane road with solid yellow lane dividers and a separated red-painted bicycle lane on the left is visible; the pavement is good and traffic moves slowly in heavy congestion. A blue hatchback directly ahead in the ego lane slows because of congestion, constraining the ego vehicle's pace. To the right, a white flatbed truck travels alongside in the next lane at a similar low speed, limiting any chance to merge. Farther ahead, a queue of vans and a box truck blocks both lanes and maintains the slowdown. Pedestrians and cyclists proceed along the fenced side path on the left, remaining outside the roadway.", "hazard_reasoning": "There is a blue hatchback slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_08009", "split": "train", "clip_key": "titan_clip_1107_000378_movie", "source": {"subset": "titan", "scenario": "clip_1107", "frame": "000378"}, "frames": ["titan_clip_1107_000378_movie_t-3.jpg", "titan_clip_1107_000378_movie_t-2.jpg", "titan_clip_1107_000378_movie_t-1.jpg", "titan_clip_1107_000378_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban commercial street with one lane in each direction and no median runs straight ahead on smooth pavement; traffic is light with no oncoming vehicles in view. A black sedan is parked along the left side just ahead of the ego-car, narrowing the usable lane. Farther ahead, a white box truck in the ego lane slows near the center of the road, constraining the ego vehicle's pace. Several pedestrians walk on the sidewalks to both sides without entering the roadway. Bollards line the right edge and parked bicycles and signs crowd the left curb, adding roadside clutter but not obstructing the lane.", "hazard_reasoning": "There is a black sedan parked on the left side of the road in front of the ego-car. The parked vehicle reduces available lane width and requires the driver to slow down to avoid collision."}
{"id": "train_08010", "split": "train", "clip_key": "titan_clip_340_000486_movie", "source": {"subset": "titan", "scenario": "clip_340", "frame": "000486"}, "frames": ["titan_clip_340_000486_movie_t-3.jpg", "titan_clip_340_000486_movie_t-2.jpg", "titan_clip_340_000486_movie_t-1.jpg", "titan_clip_340_000486_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow block-paved roadway, no marked centerline, and light traffic; buildings and storefront signs line both sides as the car proceeds at low speed. A pedestrian wearing black pants and a backpack walks ahead on the right side of the roadway, moving away from the ego car along the curb. Another pedestrian farther ahead near the center walks away in the same direction and could be in the vehicle's path. A small white van ahead on the right appears slow or paused near the curb, reducing clearance. A large truck is parked on the left and protrudes into the roadway, further constricting the corridor.", "hazard_reasoning": "There is a pedestrian wearing black pants and a backpack, walking on the right side of the road, away from the ego car. Because the sidewalk view is obstructed by the parked truck and the pedestrian is close to the roadway, the driver should slow down to maintain safety."}
{"id": "train_08011", "split": "train", "clip_key": "titan_clip_930_000138_movie", "source": {"subset": "titan", "scenario": "clip_930", "frame": "000138"}, "frames": ["titan_clip_930_000138_movie_t-3.jpg", "titan_clip_930_000138_movie_t-2.jpg", "titan_clip_930_000138_movie_t-1.jpg", "titan_clip_930_000138_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between tall buildings, separated from oncoming traffic by a metal rail median; the pavement looks smooth and traffic is light. A black van ahead in the ego lane drives away from the ego car at a steady pace, setting the immediate pace. To the right beyond the divider, a white sedan and a few other vehicles move opposite to the ego direction without affecting the ego path. Pedestrians walk along the left sidewalk near storefronts and remain off the roadway. An overhead pedestrian bridge spans the road ahead, and no unusual signage or hazards are apparent.", "hazard_reasoning": "There is a black van driving away from the ego car in the ego lane. The van ahead could slow or stop suddenly approaching the red light, so the driver should be aware of its movements."}
{"id": "train_08012", "split": "train", "clip_key": "2020-0226-101332_057738_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "057738"}, "frames": ["2020-0226-101332_057738_movie_t-3.jpg", "2020-0226-101332_057738_movie_t-2.jpg", "2020-0226-101332_057738_movie_t-1.jpg", "2020-0226-101332_057738_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban scene shows a wide, signalized multi-lane intersection with zebra crosswalks; the asphalt looks dry and intact, and traffic is moderate with a steady oncoming flow. An oncoming black SUV in the rightmost lane drives through the intersection toward the ego car, continuing straight. Other oncoming cars in the adjacent lanes also proceed straight across, passing ahead while staying on the opposite carriageway. A dark van at the near right edge moves toward the camera in the curbside oncoming lane. Farther left, vehicles on the far side travel away in the same direction as the ego, leaving no immediate lead vehicle visible. Overhead blue boards indicate lane-specific directions for left, straight, and right movements.", "hazard_reasoning": "There is a black SUV driving through the intersection in the right lane, toward the ego car. The oncoming vehicle poses a collision risk if the driver continues without yielding, so the driver should stop to avoid an impact."}
{"id": "train_08013", "split": "train", "clip_key": "titan_clip_1125_000474_movie", "source": {"subset": "titan", "scenario": "clip_1125", "frame": "000474"}, "frames": ["titan_clip_1125_000474_movie_t-3.jpg", "titan_clip_1125_000474_movie_t-2.jpg", "titan_clip_1125_000474_movie_t-1.jpg", "titan_clip_1125_000474_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way road crosses a narrow bridge with no median, smooth dry pavement, and light traffic as the lane curves gently right. A blue van is parked on the left side of the road in the ego lane, narrowing the passage. Ahead near the lane center, a pedestrian walks rightward within the roadway and may enter or constrain the ego vehicle's path. On the right side by the railing, another pedestrian stands facing the street and remains stationary.", "hazard_reasoning": "There is a blue van parked on the left side of the road. The parked van blocks part of the travel lane, requiring the driver to adjust path to avoid collision."}
{"id": "train_08014", "split": "train", "clip_key": "titan_clip_919_000066_movie", "source": {"subset": "titan", "scenario": "clip_919", "frame": "000066"}, "frames": ["titan_clip_919_000066_movie_t-3.jpg", "titan_clip_919_000066_movie_t-2.jpg", "titan_clip_919_000066_movie_t-1.jpg", "titan_clip_919_000066_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around crossing pedestrians", "environment_perception": "An urban commercial two-way street with narrow single lanes and no median is shown; the pavement is smooth and vehicle flow is light while pedestrian activity is heavy. Two pedestrians are in the middle of the road ahead crossing from right to left in front of the ego lane, one carrying a backpack and wearing a white T-shirt, and they constrain the vehicle's pace. More pedestrians walk ahead along both sides and intermittently cross near the center, keeping the path busy. A silver SUV stops at the left curb just ahead, protruding slightly into the ego lane and narrowing the passage. Orange cones line the right edge farther ahead, further reducing usable width.", "hazard_reasoning": "There are two pedestrians, one who is carrying a backpack and wearing a white t-shirt, in the middle of the road, crossing the street, from the right side of the road to the left side. The driver should carefully manoeuvre around them to avoid a collision."}
{"id": "train_08015", "split": "train", "clip_key": "2020-0131-135401_080051_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "080051"}, "frames": ["2020-0131-135401_080051_movie_t-3.jpg", "2020-0131-135401_080051_movie_t-2.jpg", "2020-0131-135401_080051_movie_t-1.jpg", "2020-0131-135401_080051_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with three same-direction lanes runs between concrete barriers, the pavement looks smooth, and traffic is light while the road rises slightly. A white van ahead in the ego lane drives away at a steady pace, setting the reference for the ego vehicle's following distance. In the left lane a black hatchback slightly ahead continues straight without changing lanes, not affecting the ego path. Farther ahead in the right lane a larger truck proceeds steadily in its lane. A diamond-shaped warning sign stands on the left shoulder.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08016", "split": "train", "clip_key": "titan_clip_897_000138_movie", "source": {"subset": "titan", "scenario": "clip_897", "frame": "000138"}, "frames": ["titan_clip_897_000138_movie_t-3.jpg", "titan_clip_897_000138_movie_t-2.jpg", "titan_clip_897_000138_movie_t-1.jpg", "titan_clip_897_000138_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A dense urban street with a narrow undivided lane and worn asphalt appears, with shopfronts and bollards along the right; traffic moves slowly as loading activity blocks the way. Two box trucks are stopped ahead in the ego lane, and a worker stands at the rear of the nearer truck unloading, constraining the ego vehicle's progress. A white van is parked on the left near the ego car, narrowing the available passage. On the right, a pedestrian wearing a gray shirt and carrying a bag walks along the edge toward the ego car, close to the travel path. Rows of parked bicycles line the right sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, carrying a bag, walking on the right side of the road, towards the ego car. The driver should be aware of this pedestrian walking toward the vehicle, as they may enter the lane unexpectedly."}
{"id": "train_08017", "split": "train", "clip_key": "2020-0127-132751_089667_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "089667"}, "frames": ["2020-0127-132751_089667_movie_t-3.jpg", "2020-0127-132751_089667_movie_t-2.jpg", "2020-0127-132751_089667_movie_t-1.jpg", "2020-0127-132751_089667_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane each direction has a dashed yellow centerline with raised markers; the pavement is dry and slightly worn, and the oncoming lane remains clear, so traffic is light. Ahead in the ego lane, a blue truck drives slowly away from the ego car, constraining the following pace. On the right sidewalk, a pedestrian walks toward the camera and stays off the roadway. A dark transverse strip or speed bump spans the ego lane near the truck.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08018", "split": "train", "clip_key": "2020-0127-132751_101711_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "101711"}, "frames": ["2020-0127-132751_101711_movie_t-3.jpg", "2020-0127-132751_101711_movie_t-2.jpg", "2020-0127-132751_101711_movie_t-1.jpg", "2020-0127-132751_101711_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban commercial two-lane road with a solid yellow centerline has worn but intact pavement and light traffic, with intermittent oncoming flow. A gray van directly ahead in the ego lane accelerates forward, increasing the gap and briefly setting the ego car's pace. An oncoming white car approaches in the right opposing lane and passes steadily without deviation, remaining separated by the centerline. No salient traffic signals or posted speed signs are visible, and no obstacles or parked vehicles intrude into the travel lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08019", "split": "train", "clip_key": "titan_clip_762_000288_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_762_000288_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_762_000288_movie_t-3_augB1.jpg", "titan_clip_762_000288_movie_t-2_augB1.jpg", "titan_clip_762_000288_movie_t-1_augB1.jpg", "titan_clip_762_000288_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial alley with a single narrow lane and no divider has smooth pavement, light vehicle flow, and heavy pedestrian activity. The ego-vehicle moves slowly past storefronts as cones line the right edge and several bicycles are parked along the left shoulder. On the left, a pedestrian in a white-and-gray shirt carrying a handbag walks toward the ego-car along the lane because a parked bicycle blocks the shoulder, and may enter the vehicle's path. Ahead near the center, a person holding an umbrella walks toward the ego-vehicle in the middle of the lane, directly constraining the pace. Farther ahead, groups of pedestrians cross the lane between the shops, intermittently occupying the path.", "hazard_reasoning": "There is a pedestrian wearing a white-and-gray shirt, carrying a handbag, and walking on the left side of the road, towards the ego-car, because of a parked bicycle on the left shoulder. The driver should manoeuvre carefully because the pedestrian is forced closer to the driving lane to avoid the parked bicycle, creating a collision risk."}
{"id": "train_08020", "split": "train", "clip_key": "2020-0205-103411_098460_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "098460"}, "frames": ["2020-0205-103411_098460_movie_t-3.jpg", "2020-0205-103411_098460_movie_t-2.jpg", "2020-0205-103411_098460_movie_t-1.jpg", "2020-0205-103411_098460_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial features two lanes in the ego direction with smooth pavement and a low hedge median separating oncoming traffic to the right; traffic flows steadily. A white pickup truck ahead in the ego lane drives away at a steady speed, effectively setting the ego car's pace. In the adjacent left lane, a small white van continues straight slightly ahead without changing lanes. On the far side of the median, several cars travel toward the camera in the opposite direction, remaining well separated. Overhead gantry signs with Japanese text appear ahead above the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08021", "split": "train", "clip_key": "2020-0212-102546_029890_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "029890"}, "frames": ["2020-0212-102546_029890_movie_t-3.jpg", "2020-0212-102546_029890_movie_t-2.jpg", "2020-0212-102546_029890_movie_t-1.jpg", "2020-0212-102546_029890_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with a metal fence dividing oncoming lanes to the right; the dry asphalt looks smooth and traffic is moderate. A white box truck ahead in the ego lane proceeds steadily and effectively sets the ego vehicle's pace. Farther ahead, a small white van continues in the same direction, keeping its distance without affecting the ego lane. To the right, several cars approach in the opposite direction behind the fence and remain separated from the ego path. Overhead traffic signals span an intersection farther ahead.", "hazard_reasoning": "There is a white truck parked in the ego lane, in front of the ego car. The parked truck obstructs the vehicle's path and forces the driver to manoeuvre around it safely."}
{"id": "train_08022", "split": "train", "clip_key": "2020-0228-150133_048028_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "048028"}, "frames": ["2020-0228-150133_048028_movie_t-3.jpg", "2020-0228-150133_048028_movie_t-2.jpg", "2020-0228-150133_048028_movie_t-1.jpg", "2020-0228-150133_048028_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial lined with mid-rise buildings carries multiple same-direction lanes separated from oncoming lanes by a painted median buffer; the dry pavement looks in good condition and traffic is heavy with stop-and-go flow. Directly ahead in the ego lane, a black sedan stands still because congestion blocks forward movement, holding the ego vehicle at a stop. In the lane to the left, a white hatchback slightly ahead inches forward alongside and could slip into the ego lane near the chevron markings. In the opposite direction on the right, a black van and other vehicles approach steadily beyond the double white lines, remaining separated from the ego path.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, because of traffic congestion ahead. Stop to avoid colliding with the stationary vehicle."}
{"id": "train_08023", "split": "train", "clip_key": "titan_clip_1183_000294_movie", "source": {"subset": "titan", "scenario": "clip_1183", "frame": "000294"}, "frames": ["titan_clip_1183_000294_movie_t-3.jpg", "titan_clip_1183_000294_movie_t-2.jpg", "titan_clip_1183_000294_movie_t-1.jpg", "titan_clip_1183_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian on left side", "environment_perception": "An urban narrow two-way street with no median runs between low-rise shops; the pavement is worn and patched, and traffic is light. A white van ahead in the ego lane travels away, modestly setting the pace. Ahead on the left, a pedestrian in a white shirt and black pants walks away from the ego car along the road edge, close to the ego path. On the right near the curb, a small group of pedestrians, including one pulling a suitcase, steps toward the roadway and begins to cross, so they may enter the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and walking away from the ego car, on the left side of the road. The driver should be aware because the pedestrian could step into the roadway unexpectedly from the sidewalk."}
{"id": "train_08024", "split": "train", "clip_key": "2020-0207-101955_118854_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "118854"}, "frames": ["2020-0207-101955_118854_movie_t-3.jpg", "2020-0207-101955_118854_movie_t-2.jpg", "2020-0207-101955_118854_movie_t-1.jpg", "2020-0207-101955_118854_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane road runs beneath an elevated expressway, the pavement dry and smooth, and traffic grows heavy as a queue forms ahead. Directly ahead in the ego lane, a blue sedan slows because of congestion ahead, constraining the ego vehicle's pace. In the right adjacent lane, a white van and a white wagon wait in a slow queue, limiting room to merge. Farther ahead under the overpass, a large box truck with several cars bunches up and intermittently stops, creating the bottleneck for the lanes.", "hazard_reasoning": "There is a blue sedan slowing down in the ego lane, because of traffic congestion ahead. Drivers should slow down to maintain a safe following distance and adapt to the slowing traffic."}
{"id": "train_08025", "split": "train", "clip_key": "titan_clip_1136_000522_movie", "source": {"subset": "titan", "scenario": "clip_1136", "frame": "000522"}, "frames": ["titan_clip_1136_000522_movie_t-3.jpg", "titan_clip_1136_000522_movie_t-2.jpg", "titan_clip_1136_000522_movie_t-1.jpg", "titan_clip_1136_000522_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with one narrow lane in each direction shows smooth new pavement and light traffic; the ego vehicle proceeds in the left lane with no same-direction vehicles immediately ahead. Ahead on the left edge, a pedestrian in a yellow dress carrying an umbrella walks away along the curb, parallel to the lane, relevant as they remain close to the ego path. On the right side, a black sedan is stopped or parked partly in the oncoming lane near the curb, narrowing that side but not encroaching into the ego lane. Farther ahead on the right sidewalk, a few pedestrians walk past shopfronts and stand near entrances, remaining on the sidewalk and not entering the roadway. Bicycles are parked with orange cones along the left curb, slightly reducing shoulder space.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and wearing a yellow dress, walking along the left side of the road, away from the ego car. The driver should slow down in case the pedestrian unexpectedly steps into the roadway."}
{"id": "train_08026", "split": "train", "clip_key": "titan_clip_586_000342_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_586_000342_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_586_000342_movie_t-3_augB1.jpg", "titan_clip_586_000342_movie_t-2_augB1.jpg", "titan_clip_586_000342_movie_t-1_augB1.jpg", "titan_clip_586_000342_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one narrow lane per direction and no median appears dry and smooth, and traffic is light with several vehicles standing by the curb. Ahead in the ego lane, a black taxi is stopped in the roadway, slowing the ego vehicle. From the left side near this taxi, a woman in a gray jacket and blue shorts carrying a handbag walks across the ego path toward the right sidewalk, passing in front of the taxi and occupying the lane briefly. Parked cars, including a white minivan, line the left curb and further narrow the available space. The oncoming lane to the right is clear of moving traffic.", "hazard_reasoning": "There is a tall woman wearing a gray jacket and blue shorts, carrying a handbag, and walking from the left side to the right side because she has just got out of a taxi. The driver must stop to avoid colliding with this crossing pedestrian under the green signal."}
{"id": "train_08027", "split": "train", "clip_key": "2020-0226-140503_065340_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "065340"}, "frames": ["2020-0226-140503_065340_movie_t-3.jpg", "2020-0226-140503_065340_movie_t-2.jpg", "2020-0226-140503_065340_movie_t-1.jpg", "2020-0226-140503_065340_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian waiting to cross.", "environment_perception": "A dense urban, signalized multi-lane intersection comes into view with smooth pavement and a red-painted approach, and the ego vehicle waits at the stop line while cross traffic flows, giving a moderate overall pace. Ahead across the junction, a group of vehicles including a black taxi and a silver hatchback travels right to left through the intersection, occupying the conflict area and preventing the ego from entering. Farther left ahead, a white box truck continues across in the same stream, keeping the path blocked. On the left sidewalk, a pedestrian wearing a black coat and black pants and carrying a handbag stands at the curb waiting to cross, relevant as they may enter the crosswalk across the ego's path.", "hazard_reasoning": "There is a pedestrian wearing a black coat and black pants, carrying a handbag, and waiting to cross on the sidewalk on the left. The pedestrian may step into the roadway when the light changes, so the driver must remain alert to avoid a collision."}
{"id": "train_08028", "split": "train", "clip_key": "2020-0129-144857_087629_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "087629"}, "frames": ["2020-0129-144857_087629_movie_t-3.jpg", "2020-0129-144857_087629_movie_t-2.jpg", "2020-0129-144857_087629_movie_t-1.jpg", "2020-0129-144857_087629_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the van changing lanes", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs straight with a metal guardrail median and smooth dry pavement, and traffic is light to moderate. Ahead in the ego lane, a white van changes to the left lane, briefly reducing the headway as it moves across the dashed line. In the left lane slightly ahead, a small white car continues straight at a similar speed, forming the gap the van merges into. On the opposite carriageway to the right beyond the median, several oncoming cars approach and pass without interaction.", "hazard_reasoning": "There is a white van in front of the ego car, changing to the left lane. You should be aware of this lane change to maintain a safe distance and avoid sudden braking."}
{"id": "train_08029", "split": "train", "clip_key": "2020-0131-135401_081553_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "081553"}, "frames": ["2020-0131-135401_081553_movie_t-3.jpg", "2020-0131-135401_081553_movie_t-2.jpg", "2020-0131-135401_081553_movie_t-1.jpg", "2020-0131-135401_081553_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated two-lane road with a yellow centerline runs between concrete barriers, the pavement dry and smooth, and traffic flows lightly as the roadway gently descends ahead. A dark minivan travels directly ahead in the ego lane at a steady pace, effectively setting the speed. Farther ahead, a white kei van continues in the same lane with a small black car in front of it, and the small pack moves uniformly with modest gaps. The opposite-direction lane to the right shows no nearby vehicles. No signals or signs are prominent, and no pedestrians, cyclists, or hazards appear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08030", "split": "train", "clip_key": "titan_clip_855_000378_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_855_000378_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_855_000378_movie_t-3_augB1.jpg", "titan_clip_855_000378_movie_t-2_augB1.jpg", "titan_clip_855_000378_movie_t-1_augB1.jpg", "titan_clip_855_000378_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban service street with a single left-side lane and no median runs beside large commercial buildings; the dry, slightly worn asphalt narrows around loading activity, and traffic is light with intermittent slowdowns. Ahead in the middle of the lane, a man wearing a baseball cap pushes a metallic cart toward the ego vehicle, walking there because blue containers and dollies crowd the right edge and push him outward. To the right, a box truck is stopped with its cargo area open while staff handle carts and equipment that partly intrude into the lane, limiting the ego vehicle's speed. On the left, a small white car is stopped near the curb and protrudes slightly into the travel lane, further squeezing the passage. A blue pedestrian crossing sign is visible on the left.", "hazard_reasoning": "There is a man wearing a baseball cap, pushing a metallic cart, and walking in the middle of road towards the ego car because of containers and dollies on the right side. The pedestrian is walking in the roadway ahead, so the driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_08031", "split": "train", "clip_key": "2020-0131-135401_040110_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "040110"}, "frames": ["2020-0131-135401_040110_movie_t-3.jpg", "2020-0131-135401_040110_movie_t-2.jpg", "2020-0131-135401_040110_movie_t-1.jpg", "2020-0131-135401_040110_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each direction and a solid yellow centerline runs between low-rise shops; pavement is clean and traffic is light. Directly ahead in the ego lane, a white hatchback slows, constrained by a pedestrian who is crossing the road in front of it. The pedestrian steps from the right side toward the left across the ego lane ahead, occupying the path and causing the trailing traffic to decelerate. Farther ahead, an oncoming white van and a few cars proceed steadily in their lane without affecting the ego car. A no-parking sign stands on the left sidewalk railings.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane in front of the ego car, because a pedestrian is crossing ahead. The driver should slow down to maintain a safe distance and avoid a collision with the pedestrian or the slowing vehicle."}
{"id": "train_08032", "split": "train", "clip_key": "titan_clip_694_000522_movie", "source": {"subset": "titan", "scenario": "clip_694", "frame": "000522"}, "frames": ["titan_clip_694_000522_movie_t-3.jpg", "titan_clip_694_000522_movie_t-2.jpg", "titan_clip_694_000522_movie_t-1.jpg", "titan_clip_694_000522_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban back street with a single shared two-way lane and no centerline runs between small shops; the pavement looks smooth and traffic is light with no moving vehicles. A temporary construction fence along the right edge slightly narrows the roadway. On the left, a person in a baseball cap carrying a shoulder bag walks in the middle of the road toward the ego-vehicle, directly in its path. Beside them, another pedestrian approaches in the lane from the left frontage, occupying the left half of the roadway and constraining the ego car's pace. Farther ahead near the center, a pedestrian proceeds away along the lane, remaining in the vehicle's path.", "hazard_reasoning": "There is a woman dressed in a baseball cap, carrying a shoulder bag, and walking in the middle of the road to the left side towards the ego-car. The driver should carefully manoeuvre because the pedestrian is directly in the vehicle's path."}
{"id": "train_08033", "split": "train", "clip_key": "2020-0210-101957_006308_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "006308"}, "frames": ["2020-0210-101957_006308_movie_t-3.jpg", "2020-0210-101957_006308_movie_t-2.jpg", "2020-0210-101957_006308_movie_t-1.jpg", "2020-0210-101957_006308_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "The scene is a two-lane urban street with a painted centerline, narrow sidewalks and railings, and smooth pavement; traffic is light but momentarily stopped at a junction ahead. A green sedan directly in front of the ego-car in the left lane is stationary at the stop line because of a red traffic light ahead, holding the ego-vehicle. Farther ahead in the same direction, a white van also waits near the intersection, forming a short queue. In the opposite lane, an oncoming white van approaches through the junction and continues past within its lane, not entering the ego path. Shops and utility poles line both sides, and no obstacles are visible.", "hazard_reasoning": "There is a green sedan stopped in front of the ego-car, in the ego lane, because of a red traffic light ahead. The driver must stop to avoid a collision with the stationary vehicle at the red signal."}
{"id": "train_08034", "split": "train", "clip_key": "2020-0227-153144_012094_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "012094"}, "frames": ["2020-0227-153144_012094_movie_t-3.jpg", "2020-0227-153144_012094_movie_t-2.jpg", "2020-0227-153144_012094_movie_t-1.jpg", "2020-0227-153144_012094_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane city street runs between mid-rise buildings, with the ego car in the left lane beside a curbside planter; pavement looks smooth and traffic is light but currently halted at a signalized intersection. A black van directly ahead in the ego lane is stopped for the red traffic light, holding the ego vehicle's pace. In the adjacent right lane, a white van slightly ahead also waits at the light and may proceed alongside when it turns green. On the left sidewalk near the corner, a pedestrian stands by the crosswalk, waiting and remaining off the roadway. The overhead traffic signal facing the ego direction shows red.", "hazard_reasoning": "There is a black van stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to comply with the red light and maintain a safe distance."}
{"id": "train_08035", "split": "train", "clip_key": "titan_clip_50_000048_movie", "source": {"subset": "titan", "scenario": "clip_50", "frame": "000048"}, "frames": ["titan_clip_50_000048_movie_t-3.jpg", "titan_clip_50_000048_movie_t-2.jpg", "titan_clip_50_000048_movie_t-1.jpg", "titan_clip_50_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban backstreet with a two-way carriageway, no centerline, and smooth pavement shows very light traffic as the ego car proceeds straight under building shadows. Ahead near the right curb, a pedestrian in dark clothes walks away along the edge of the roadway, close to the ego car's path. Farther ahead on the left, a bald-headed man wearing black pants and a white shirt carries a jacket and walks away along the roadside, staying near the wall. In the distance near the center, a cyclist rides away in the same direction, occupying the travel path and constraining the pace. A car is parked recessed in a garage bay on the left; no signals or medians are visible.", "hazard_reasoning": "There is a bald-headed man, wearing black pants and a white shirt, carrying a jacket, and walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a collision under these conditions."}
{"id": "train_08036", "split": "train", "clip_key": "titan_clip_168_000594_movie", "source": {"subset": "titan", "scenario": "clip_168", "frame": "000594"}, "frames": ["titan_clip_168_000594_movie_t-3.jpg", "titan_clip_168_000594_movie_t-2.jpg", "titan_clip_168_000594_movie_t-1.jpg", "titan_clip_168_000594_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road in Japan has two same-direction lanes with no median, smooth pavement, and slow, heavy flow among closely spaced vehicles. A group of pedestrians ahead crosses from the left to the right in front of the ego vehicle, including a tall man wearing a blue shirt and gray pants, and they occupy the ego lane. To the right, a silver van in the adjacent lane is stopped or creeping as it yields to the pedestrians, momentarily alongside the crossing. Farther ahead, a red car and a bus in the ego lane move slowly in a queue, constraining the pace. Blue overhead guide signs are visible above the roadway.", "hazard_reasoning": "There is a tall man, wearing a blue shirt and gray pants, crossing the street, from the left side to the right side. You should slow down to yield to the crossing pedestrian and avoid a collision."}
{"id": "train_08037", "split": "train", "clip_key": "titan_clip_635_000300_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_635_000300_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_635_000300_movie_t-3_augB1.jpg", "titan_clip_635_000300_movie_t-2_augB1.jpg", "titan_clip_635_000300_movie_t-1_augB1.jpg", "titan_clip_635_000300_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "A narrow urban two-way street with smooth asphalt runs between mid-rise buildings, lacking a median; traffic is light and the ego car follows a small box truck ahead that slows near the left curb. A pedestrian wearing a white T-shirt, black shorts, and carrying a handbag crosses ahead from the left to the right directly across the ego lane, passing in front of the vehicle. On the right side slightly farther ahead, another pedestrian walks along the roadway edge near storefronts beside the truck. An oncoming white van moves slowly on the opposite side, threading through the narrow corridor past the stopped truck.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, wearing black shorts, and carrying a handbag, who is crossing the street in front of the ego car, from the left side of the street to the right side. The pedestrian has entered the vehicle's path and has the right of way, so the driver must yield to prevent a potential collision."}
{"id": "train_08038", "split": "train", "clip_key": "2020-0220-102630_038644_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "038644"}, "frames": ["2020-0220-102630_038644_movie_t-3.jpg", "2020-0220-102630_038644_movie_t-2.jpg", "2020-0220-102630_038644_movie_t-1.jpg", "2020-0220-102630_038644_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multilane road curves right toward a signalized intersection beside a station, with smooth pavement and moderate same-direction traffic queued at the stop line. A black minivan ahead in the ego lane is stopped for a red light, holding the ego car as described. To its left and slightly forward, a small truck with a covered bed waits in the adjacent lane, ready to proceed when green and likely to run parallel to the ego vehicle. Pedestrians gather on both sidewalks at the crosswalks, standing and facing the roadway, and may enter when permitted. Overhead signals display solid red for this approach.", "hazard_reasoning": "There is a black minivan stopped in the ego lane, in front of the ego car, because of a red traffic light. You need to stop to avoid a collision with the stopped vehicle ahead at the red light."}
{"id": "train_08039", "split": "train", "clip_key": "2020-0127-132751_104361_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "104361"}, "frames": ["2020-0127-132751_104361_movie_t-3.jpg", "2020-0127-132751_104361_movie_t-2.jpg", "2020-0127-132751_104361_movie_t-1.jpg", "2020-0127-132751_104361_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop due to congestion ahead.", "environment_perception": "A suburban commercial street with one lane each way and no median appears, the pavement smooth and traffic slow with a brief stop. A silver van directly ahead in the ego lane is stopped with brake lights on because congestion ahead blocks movement, holding the ego vehicle. A pedestrian at the right curb walks forward from the sidewalk alongside the van and may step into the ego lane while passing the stopped vehicle. Oncoming cars proceed in the opposing lane to the right, preventing any maneuver around the van. A guardrail lines the right shoulder beside storefronts and parked bicycles, narrowing the roadway.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The halted vehicle signals slow traffic ahead, so you should stop to maintain a safe distance."}
{"id": "train_08040", "split": "train", "clip_key": "titan_clip_433_000336_movie", "source": {"subset": "titan", "scenario": "clip_433", "frame": "000336"}, "frames": ["titan_clip_433_000336_movie_t-3.jpg", "titan_clip_433_000336_movie_t-2.jpg", "titan_clip_433_000336_movie_t-1.jpg", "titan_clip_433_000336_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban street with block paving and no centerline runs between shops and a temporary wall. It functions as a single shared lane with light traffic and no median; a white van is parked at the left curb. On the left ahead, a pedestrian in a black dress walks toward the ego vehicle in the roadway because the parked van blocks the curbside space, and she may edge into the vehicle's path. At the right foreground, an oncoming cyclist rides toward the camera along the curb, passing close to the lane and constraining available space. Near the van, another pedestrian heads toward the ego beside her, further narrowing the passage. Construction hoarding and cones line the right side but do not intrude into the lane.", "hazard_reasoning": "There is a pedestrian wearing a black dress, walking on the left side of the road, toward the ego car, because of a parked vehicle on the left. The driver should manoeuvre around the pedestrian to avoid a collision while passing the parked vehicle."}
{"id": "train_08041", "split": "train", "clip_key": "2020-0228-150133_036577_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "036577"}, "frames": ["2020-0228-150133_036577_movie_t-3.jpg", "2020-0228-150133_036577_movie_t-2.jpg", "2020-0228-150133_036577_movie_t-1.jpg", "2020-0228-150133_036577_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego's direction and oncoming lanes to the right across painted lines has smooth pavement and heavy, slow-moving traffic toward a signalized intersection ahead. Ahead in the ego lane, a black coupe slows because of congestion ahead, constraining the ego vehicle's pace. To the left in the adjacent lane, a white hatchback also slows alongside, limiting any immediate lane change. Along the curb on the right, a large bus is stopped or crawling near a stop with a white van just beyond it, contributing to the queue in that lane. Traffic signals hang over the distant junction as vehicles stack beneath them.", "hazard_reasoning": "There is a black coupe slowing in the ego lane, because of traffic congestion ahead. Slow down to maintain a safe distance and avoid a collision."}
{"id": "train_08042", "split": "train", "clip_key": "titan_clip_1230_000360_movie", "source": {"subset": "titan", "scenario": "clip_1230", "frame": "000360"}, "frames": ["titan_clip_1230_000360_movie_t-3.jpg", "titan_clip_1230_000360_movie_t-2.jpg", "titan_clip_1230_000360_movie_t-1.jpg", "titan_clip_1230_000360_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "An urban commercial street with midrise storefronts unfolds on a two-lane, two-way road with no median; the asphalt looks smooth and traffic is light. Several pedestrians are at the left-side crosswalk just ahead, some stepping into the ego lane as they walk rightward across, so they constrain the vehicle's pace. A white box truck is parked along the left curb a little ahead while it is being unloaded, narrowing the usable width of the ego lane and creating a local pinch point. An oncoming white car travels toward the camera in the opposite lane on the right, maintaining course as it passes the area of the parked truck. Farther ahead, a small vehicle proceeds in the same direction near the center of the block but remains distant and does not affect the ego path.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because the truck is being unloaded. This parked truck partially obstructs the lane and may require careful manoeuvring to avoid collision, so the driver should adjust accordingly."}
{"id": "train_08043", "split": "train", "clip_key": "2020-0131-135401_069966_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "069966"}, "frames": ["2020-0131-135401_069966_movie_t-3.jpg", "2020-0131-135401_069966_movie_t-2.jpg", "2020-0131-135401_069966_movie_t-1.jpg", "2020-0131-135401_069966_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction and opposing lanes to the right runs between mid-rise buildings; there is no physical median, the asphalt looks smooth, and traffic is heavy and slow. A black mid-size SUV directly ahead in the ego lane slows because congestion forms ahead, constraining the ego vehicle's pace. In the adjacent lane to the right, a box truck slightly farther ahead rolls slowly in the same queue, limiting forward visibility. A dark minivan is alongside on the right of the ego, edging a little ahead in its lane while continuing straight without signaling. Opposing traffic moves steadily beyond the center lines.", "hazard_reasoning": "There's a black mid-SUV slowing down in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision due to the sudden slowdown and traffic buildup."}
{"id": "train_08044", "split": "train", "clip_key": "2020-0220-151845_041313_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "041313"}, "frames": ["2020-0220-151845_041313_movie_t-3.jpg", "2020-0220-151845_041313_movie_t-2.jpg", "2020-0220-151845_041313_movie_t-1.jpg", "2020-0220-151845_041313_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated two-lane roadway under an expressway, bounded by concrete walls and smooth pavement, carries slow, bunching same-direction traffic. A red truck directly ahead in the ego lane slows with the queue because of congestion, constraining the ego car's pace. In the adjacent right lane, a silver van slightly ahead proceeds at similar speed and remains alongside. Farther ahead in the right lane, a small dark car moves with the pack and brakes intermittently. Rows of support pillars and the concrete barriers line the road and limit sight distance, with no salient signals visible.", "hazard_reasoning": "There is a red truck slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_08045", "split": "train", "clip_key": "2020-0207-101955_024896_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "024896"}, "frames": ["2020-0207-101955_024896_movie_t-3.jpg", "2020-0207-101955_024896_movie_t-2.jpg", "2020-0207-101955_024896_movie_t-1.jpg", "2020-0207-101955_024896_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road with smooth pavement runs between mid-rise buildings, with a bollard-separated side lane on the right; traffic is moderate, with a slow queue in the side lane while the ego lane is lightly loaded. Ahead in the ego lane, a white truck with a green tarp drives away at a steady pace, shaping the ego car's speed. To the right, a line of vans and a taxi proceed slowly within the separated lane parallel to the ego path, keeping their distance. On the left sidewalk near a crosswalk, pedestrians stand and walk along the storefronts without entering the roadway.", "hazard_reasoning": "There is a white truck with a green tarp on it, driving in the ego lane, away from the ego car. The truck in the same lane may slow down or brake unexpectedly, so the driver should be prepared to adjust speed accordingly."}
{"id": "train_08046", "split": "train", "clip_key": "2020-0210-101957_032661_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "032661"}, "frames": ["2020-0210-101957_032661_movie_t-3.jpg", "2020-0210-101957_032661_movie_t-2.jpg", "2020-0210-101957_032661_movie_t-1.jpg", "2020-0210-101957_032661_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban four-lane arterial with two lanes in each direction runs between mid-rise buildings, divided only by double white center lines; the pavement appears smooth and traffic is moderate. Ahead in the ego left lane, a small white truck pulls away under a green signal, setting the pace for the ego vehicle. In the adjacent right lane slightly farther ahead, a black hatchback travels steadily in the same direction, keeping its lane and limiting overtaking room. In the opposite lanes to the right, a white van approaches with other oncoming traffic across the center lines. Overhead traffic lights ahead show green for the ego direction.", "hazard_reasoning": "There is a white truck driving away from the ego car, because of the green traffic light, in front of the ego car. As the light has turned green, the truck will move forward and the driver should follow it to maintain safe spacing and ensure smooth traffic flow."}
{"id": "train_08047", "split": "train", "clip_key": "2020-0131-103016_075429_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "075429"}, "frames": ["2020-0131-103016_075429_movie_t-3.jpg", "2020-0131-103016_075429_movie_t-2.jpg", "2020-0131-103016_075429_movie_t-1.jpg", "2020-0131-103016_075429_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy, slow-moving traffic as vehicles queue toward a signalized intersection ahead. A white van directly ahead in the ego lane slows markedly because the line compresses, constraining the ego car's speed. A black hatchback slightly ahead to the left in the adjacent lane decelerates with the queue and holds a close parallel position. A large box truck close in the right lane proceeds straight at a similar pace, limiting room for a rightward lane change. An overhead electronic sign spans the roadway and the distant traffic signal governs the flow.", "hazard_reasoning": "There is a white van in ego-car lane that is slowing down, because there is traffic congestion ahead. Driver should slow down to keep a safe following distance and prevent collision with the slowing van."}
{"id": "train_08048", "split": "train", "clip_key": "2020-0207-151349_014541_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "014541"}, "frames": ["2020-0207-151349_014541_movie_t-3.jpg", "2020-0207-151349_014541_movie_t-2.jpg", "2020-0207-151349_014541_movie_t-1.jpg", "2020-0207-151349_014541_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth asphalt runs beside office buildings, bordered by a low hedge and curb on the right, and traffic is heavy and mostly stopped. A white van directly ahead in the ego lane stands still because of congestion, blocking the path forward. A large box truck slightly ahead to the right is stopped in the adjacent same-direction lane near the curb, limiting the forward gap and view. Another box truck to the left of the van waits in the neighboring lane, also halted and parallel to the ego vehicle. Sun glare from high ahead-left flares across the scene and reduces visibility.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision due to halted traffic in the lane."}
{"id": "train_08049", "split": "train", "clip_key": "2020-0220-102630_031988_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "031988"}, "frames": ["2020-0220-102630_031988_movie_t-3.jpg", "2020-0220-102630_031988_movie_t-2.jpg", "2020-0220-102630_031988_movie_t-1.jpg", "2020-0220-102630_031988_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with three same-direction lanes and painted dividers has dry, smooth pavement and light traffic as the vehicle approaches an intersection. A motorcyclist ahead near the left curb proceeds straight in the ego direction, potentially setting the pace for the ego vehicle. In the opposing flow on the right side of the roadway, a small boxy car approaches in its lane, continuing straight and remaining separated by the center markings. Farther ahead along the opposing curb, a bus slows next to the sidewalk, staying out of the ego lane. A person stands with a bicycle on the right sidewalk near storefronts.", "hazard_reasoning": "The green traffic signal and absence of obstacles or vulnerable road users indicate no immediate hazards; you can proceed safely through the intersection."}
{"id": "train_08050", "split": "train", "clip_key": "2020-0205-103411_030158_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "030158"}, "frames": ["2020-0205-103411_030158_movie_t-3.jpg", "2020-0205-103411_030158_movie_t-2.jpg", "2020-0205-103411_030158_movie_t-1.jpg", "2020-0205-103411_030158_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction, no center median, and roadside railings has dry, well-kept pavement, and light traffic bunches at an intersection. A blue sedan directly ahead in the ego lane is stopped at the line because the overhead signal shows red, holding the ego vehicle. In the adjacent right lane, a black van waits slightly ahead at the same light, remaining in its lane and not affecting the ego path. Several pedestrians on the left sidewalk walk toward the junction behind a fence and stay off the roadway. The overhead traffic lights remain red throughout the scene.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop promptly to comply with the red light and avoid a rear-end collision."}
{"id": "train_08051", "split": "train", "clip_key": "2020-0206-142535_047115_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "047115"}, "frames": ["2020-0206-142535_047115_movie_t-3.jpg", "2020-0206-142535_047115_movie_t-2.jpg", "2020-0206-142535_047115_movie_t-1.jpg", "2020-0206-142535_047115_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial with smooth pavement and a painted double white-line buffer on the right carries same-direction traffic that moves at a moderate, slowing pace as it approaches an elevated railway and intersection. A black sedan directly ahead in the ego lane moves slowly because of congestion ahead, constraining the ego vehicle's speed. A silver van in the lane to the left holds a similar pace slightly ahead, remaining alongside and limiting an easy lane change. Farther ahead, a short queue of cars bunches under the overpass and alternates between braking and creeping, forming the bottleneck. An overhead sign shows a posted speed of 50.", "hazard_reasoning": "There is a black sedan moving slowly in the ego lane, because of the traffic congestion ahead. Driver should follow the vehicle ahead to maintain safe spacing and adapt speed in congested traffic."}
{"id": "train_08052", "split": "train", "clip_key": "titan_clip_1347_000432_movie", "source": {"subset": "titan", "scenario": "clip_1347", "frame": "000432"}, "frames": ["titan_clip_1347_000432_movie_t-3.jpg", "titan_clip_1347_000432_movie_t-2.jpg", "titan_clip_1347_000432_movie_t-1.jpg", "titan_clip_1347_000432_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban, stone-paved, tree-lined street runs straight between buildings with no marked centerline; the narrow carriageway is clear and traffic is absent. The pavement is even and dry, and large planters border the edges. On the left near the curb, three pedestrians walk toward the vehicle along the edge, close to the lane and may enter it. Farther ahead on the left, another pedestrian walks away in the same direction near the curb. On the right by a storefront, one person stands still and does not interact with traffic.", "hazard_reasoning": "No caption provided. No hazards detected on the clear road, so the driver can proceed without caution."}
{"id": "train_08053", "split": "train", "clip_key": "titan_clip_81_000510_movie", "source": {"subset": "titan", "scenario": "clip_81", "frame": "000510"}, "frames": ["titan_clip_81_000510_movie_t-3.jpg", "titan_clip_81_000510_movie_t-2.jpg", "titan_clip_81_000510_movie_t-1.jpg", "titan_clip_81_000510_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the double-parked SUV", "environment_perception": "A narrow urban street with no centerline runs straight between tall buildings, the pavement smooth and traffic light. Ahead on the left, a white SUV is double-parked with its tailgate open as people load it, occupying part of the ego lane and constraining the path forward. Two pedestrians stand by the SUV and move around its rear on the roadway, close to the travel lane. Additional cars are parked along the left curb, the right side is bounded by a raised sidewalk and railing, and no other moving vehicles are visible.", "hazard_reasoning": "A white SUV double-parked on the left side of the road, because it is being loaded. The double-parked vehicle narrows the driving lane and could force passing vehicles into adjacent lanes, increasing collision risk if not navigated carefully."}
{"id": "train_08054", "split": "train", "clip_key": "2020-0220-151845_044666_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "044666"}, "frames": ["2020-0220-151845_044666_movie_t-3.jpg", "2020-0220-151845_044666_movie_t-2.jpg", "2020-0220-151845_044666_movie_t-1.jpg", "2020-0220-151845_044666_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban three-lane one-way road runs under an elevated expressway, with dry, well-marked pavement and guardrails at the right; traffic flows at a moderate pace. Ahead in the ego lane, a red truck with a tarped load slows, constraining the ego vehicle's speed. In the adjacent left lane, a black sedan moves slightly ahead and continues forward, occupying space beside the truck. On the far right beyond the guardrail, a large bus stands near the curb and remains outside the travel lanes. Pedestrians walk along the left sidewalk behind barriers, and no oncoming traffic is present.", "hazard_reasoning": "There is a red truck slowing down in the ego lane. The driver should slow down to maintain safe distance as the truck may decelerate further."}
{"id": "train_08055", "split": "train", "clip_key": "2020-0203-154554_068486_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "068486"}, "frames": ["2020-0203-154554_068486_movie_t-3.jpg", "2020-0203-154554_068486_movie_t-2.jpg", "2020-0203-154554_068486_movie_t-1.jpg", "2020-0203-154554_068486_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Be aware of the motorcycle ahead", "environment_perception": "An urban arterial with three same-direction lanes and no median carries moderate traffic on dry, smooth pavement toward a signalized intersection. A black motorcycle ahead in the center ego lane rides away from the ego car toward the crosswalk, continuing straight and setting the immediate pace. Another motorcycle farther ahead to the left proceeds in the left lane toward the intersection, staying just outside the ego lane as it nears the stop line. A small white light truck in the right lane ahead advances toward the junction near the curb, moving parallel to the ego vehicle and narrowing space on that side.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane away from the ego car. Because the traffic light is red, vehicles ahead may stop or slow abruptly, so the driver should remain alert to the motorcycle's motion and prepare to adjust speed."}
{"id": "train_08056", "split": "train", "clip_key": "2020-0213-143552_043308_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "043308"}, "frames": ["2020-0213-143552_043308_movie_t-3.jpg", "2020-0213-143552_043308_movie_t-2.jpg", "2020-0213-143552_043308_movie_t-1.jpg", "2020-0213-143552_043308_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection beneath an overhead structure, with painted center lines and smooth dry pavement; traffic is moderate and forms short queues at the light. A white box truck directly ahead in the ego lane is driving away from the ego car and then easing to a stop at the intersection, controlling the ego vehicle's pace. To the right, a white sedan in the adjacent lane creeps forward beside the ego car without merging. Ahead left, a yellow car in the next lane advances slowly toward the stop line, remaining clear of the ego lane. Overhead blue direction boards are visible, and the traffic signal above the lanes shows red.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. This large vehicle ahead may block your view of traffic conditions and potential obstacles, so maintain a safe distance and stay alert under this situation."}
{"id": "train_08057", "split": "train", "clip_key": "2020-0226-140503_093766_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "093766"}, "frames": ["2020-0226-140503_093766_movie_t-3.jpg", "2020-0226-140503_093766_movie_t-2.jpg", "2020-0226-140503_093766_movie_t-1.jpg", "2020-0226-140503_093766_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the same direction runs straight on dry, smooth pavement, separated from the opposite carriageway by a metal-railed median; traffic is moderate and slows near an intersection. A gray dump truck directly ahead in the ego lane pulls away from a stop and accelerates due to congestion ahead, governing the ego car's pace. In the adjacent left lane, a black sedan slightly ahead continues forward at a steadier speed, passing the truck and remaining clear of the ego lane. On the separated roadway to the right, oncoming cars move independently behind the barrier without interacting. A 50 km/h speed limit sign is posted on the left.", "hazard_reasoning": "There is a gray truck accelerating from a stop in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should start moving to maintain safe following distance and keep up with traffic flow."}
{"id": "train_08058", "split": "train", "clip_key": "titan_clip_15_000108_movie", "source": {"subset": "titan", "scenario": "clip_15", "frame": "000108"}, "frames": ["titan_clip_15_000108_movie_t-3.jpg", "titan_clip_15_000108_movie_t-2.jpg", "titan_clip_15_000108_movie_t-1.jpg", "titan_clip_15_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban shopping street with a single brick-paved lane runs between tall buildings, with no divider and no other vehicles visible, so movement is slow among pedestrians. On the left side of the lane, a woman in black pants and a striped shirt walks away from the camera along the curb, close to the vehicle's path. Slightly ahead near the center, a man walks a bicycle in the lane in the same direction, occupying space and limiting the available path forward. Farther ahead, several pedestrians proceed along the street and some cross from right to left in front, creating a continuous stream in the lane. Short bollards and shop entrances line both sides, further narrowing the roadway.", "hazard_reasoning": "There is a woman wearing black pants and a striped shirt and walking on the left side of the road, away from the ego car. You should carefully manoeuvre around her to maintain a safe distance and prevent a collision."}
{"id": "train_08059", "split": "train", "clip_key": "2020-0203-154554_047403_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "047403"}, "frames": ["2020-0203-154554_047403_movie_t-3.jpg", "2020-0203-154554_047403_movie_t-2.jpg", "2020-0203-154554_047403_movie_t-1.jpg", "2020-0203-154554_047403_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-ending the vehicle ahead", "environment_perception": "An urban expressway segment under an elevated structure shows two same-direction lanes bordered by barriers and pillars; the pavement is dry and intact, and traffic is heavy with stop-and-go movement. A gray hatchback directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle. To the right, a small white flatbed truck is stopped in the adjacent lane alongside the ego car and may enter the ego lane when space appears. Farther ahead in the right lane, a queue of cars and vans inches forward, constraining the overall pace. Chevron boards on the left barrier indicate a curve, and no traffic signals are visible.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid rear-ending the halted vehicle in the backed-up traffic."}
{"id": "train_08060", "split": "train", "clip_key": "2020-0204-150838_061802_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "061802"}, "frames": ["2020-0204-150838_061802_movie_t-3.jpg", "2020-0204-150838_061802_movie_t-2.jpg", "2020-0204-150838_061802_movie_t-1.jpg", "2020-0204-150838_061802_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated expressway with smooth asphalt and no visible median, and traffic is heavy and slow-moving. A large white box truck is directly ahead in the ego lane, creeping and setting the pace. On the left side, a gray van cuts in ahead as it merges into the ego lane, entering the ego vehicle's path. To the right, slow-moving same-direction traffic including a dark heavy truck and a silver hatchback runs parallel close by, restricting room to change lanes. An overhead blue guide sign shows directions toward Chiba and Tatsumi.", "hazard_reasoning": "There is a gray van cutting in from the left side of the road, in front of the ego car, because it is merging into the ego lane. The driver should slow down to maintain a safe distance as the van merges and avoid a collision."}
{"id": "train_08061", "split": "train", "clip_key": "titan_clip_257_000108_movie", "source": {"subset": "titan", "scenario": "clip_257", "frame": "000108"}, "frames": ["titan_clip_257_000108_movie_t-3.jpg", "titan_clip_257_000108_movie_t-2.jpg", "titan_clip_257_000108_movie_t-1.jpg", "titan_clip_257_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban alley with a single shared lane and no median extends ahead; the pavement looks smooth but the roadway is very tight, and traffic is light with no oncoming vehicles. On the right side ahead, a pedestrian wearing a white shirt and black pants walks toward the ego car along the curb, occupying part of the lane and constraining the ego vehicle's pace. No other moving road users are evident nearby. Storefronts, parked bicycles, signs, and a utility pole crowd both curbs, further narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the right side of the road, towards the ego car. The driver should slow down to maintain a safe distance and avoid a potential collision with the pedestrian."}
{"id": "train_08062", "split": "train", "clip_key": "2020-0228-102841_068415_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "068415"}, "frames": ["2020-0228-102841_068415_movie_t-3.jpg", "2020-0228-102841_068415_movie_t-2.jpg", "2020-0228-102841_068415_movie_t-1.jpg", "2020-0228-102841_068415_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban scene approaches a signalized intersection on a two-lane road with no median and smooth red-marked pavement, with light traffic queued at the stop line. A white sedan directly ahead in the ego lane near the left curb moves slowly with its left indicator on, preparing to turn left and setting the ego vehicle's pace. A blue hatchback slightly ahead in the adjacent right lane waits at the line, remaining in its lane. Several pedestrians stand on both sidewalks near the crosswalks. An overhead traffic signal controls the junction, and a no-parking sign is posted on the left.", "hazard_reasoning": "There is a white sedan driving forward on the left side of the intersection, in the ego lane, because it is indicating to turn left. Since it is signaling a left turn, it may decelerate or change lanes unpredictably, so follow the vehicle ahead to maintain safe spacing."}
{"id": "train_08063", "split": "train", "clip_key": "2020-0203-154554_011533_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "011533"}, "frames": ["2020-0203-154554_011533_movie_t-3.jpg", "2020-0203-154554_011533_movie_t-2.jpg", "2020-0203-154554_011533_movie_t-1.jpg", "2020-0203-154554_011533_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with no median stretches through a wide intersection, the pavement smooth and traffic flowing at a moderate, steady pace. Ahead on the left, a white van in the left lane nudges right within its lane and proceeds through the junction, moving away from the ego vehicle as a cyclist rides along the left edge of the left lane beside it. To the right front, a silver hatchback in the adjacent lane continues straight and gradually opens a gap. Farther right, a dark taxi travels ahead in the rightmost lane near the curb without merging. Pedestrians remain on the sidewalks, and no unusual obstacles are visible.", "hazard_reasoning": "There is a white van maneuvering in the left lane, away from the ego car, because of a cyclist in the left lane. Slow down to maintain a safe distance because the van may swerve unpredictably when avoiding the cyclist."}
{"id": "train_08064", "split": "train", "clip_key": "2020-0129-144857_035070_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "035070"}, "frames": ["2020-0129-144857_035070_movie_t-3.jpg", "2020-0129-144857_035070_movie_t-2.jpg", "2020-0129-144857_035070_movie_t-1.jpg", "2020-0129-144857_035070_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane roadway runs under an elevated expressway with a right-side guardrail and dry, well-kept pavement; traffic is moderate and begins to ease. A black van ahead in the ego lane accelerates and pulls away as congestion ahead eases, opening a growing gap to the ego car. A white van in the adjacent lane to the left travels nearly alongside at a steady pace, constraining lateral movement. Farther ahead, a box truck continues straight among slowly moving cars in the same direction, shaping the distant flow. The right edge is tight with a barrier and narrow shoulder, and no obstacles or unusual controls are evident.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08065", "split": "train", "clip_key": "2020-0220-151845_004202_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "004202"}, "frames": ["2020-0220-151845_004202_movie_t-3.jpg", "2020-0220-151845_004202_movie_t-2.jpg", "2020-0220-151845_004202_movie_t-1.jpg", "2020-0220-151845_004202_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with three same-direction lanes and no median stretches ahead, the left curbside lane surfaced in red and pavement in good condition; traffic is moderate as the ego vehicle approaches a signalized intersection. A city bus ahead slightly right of center moves straight through the junction, setting the pace for vehicles behind. A black minivan farther ahead in the right lane also proceeds straight through the green light, remaining in its lane and not impeding the ego path. Pedestrians line both sidewalks near the crosswalks, some walking along the left edge and others waiting at the corners behind railings, posing no immediate conflict. The overhead traffic signal shows green for the ego direction.", "hazard_reasoning": "No hazards are detected in this clear scenario; maintain safe driving."}
{"id": "train_08066", "split": "train", "clip_key": "titan_clip_1097_000288_movie", "source": {"subset": "titan", "scenario": "clip_1097", "frame": "000288"}, "frames": ["titan_clip_1097_000288_movie_t-3.jpg", "titan_clip_1097_000288_movie_t-2.jpg", "titan_clip_1097_000288_movie_t-1.jpg", "titan_clip_1097_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban intersection with one lane each way and no median lies ahead on smooth pavement, and traffic is light. On the right, a pedestrian steps onto the zebra crossing and walks left across the ego lane, directly occupying the path. On the left side just beyond the crosswalk, a pedestrian in black pants pushes a handcart along the roadway because a parked vehicle blocks the curb, edging near the ego lane and potentially entering it. Farther ahead in the same direction, a small delivery scooter travels slowly away from the intersection, setting a gentle pace. The pedestrian signal is lit green for the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing black pants and pushing a handcart on the left side of the road, in front of the ego-car, because of the parked vehicle. The pedestrian may need to move into the driving lane to pass the obstruction, so the driver should slow down to avoid a collision."}
{"id": "train_08067", "split": "train", "clip_key": "2020-0220-151845_049015_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-151845_049015_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-151845_049015_movie_t-3_augB1.jpg", "2020-0220-151845_049015_movie_t-2_augB1.jpg", "2020-0220-151845_049015_movie_t-1_augB1.jpg", "2020-0220-151845_049015_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Start moving", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway with smooth pavement and moderate traffic; the left lane is slow while the center and right move more freely. A red truck with a yellow-covered load is directly ahead in the ego lane and accelerates away, briefly constraining and then opening the ego car's path. In the adjacent left lane, a white van alongside creeps in the queue, remaining parallel and not entering the ego lane. In the right lane, a silver microvan ahead-right travels at a steady speed and stays in its lane. Overhead blue guide signs point toward destinations including Hachioji and Takao and show an entrance about 200 m ahead.", "hazard_reasoning": "There is a red and yellow truck accelerating in front of the ego car, in the ego lane. The truck's rapid acceleration reduces the gap ahead, so the driver should start moving to maintain a safe distance and avoid sudden maneuvers."}
{"id": "train_08068", "split": "train", "clip_key": "2020-0226-101332_059717_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "059717"}, "frames": ["2020-0226-101332_059717_movie_t-3.jpg", "2020-0226-101332_059717_movie_t-2.jpg", "2020-0226-101332_059717_movie_t-1.jpg", "2020-0226-101332_059717_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with good pavement runs between tall buildings, with a guardrail median on the right, and traffic is heavy and mostly stopped. A gray van directly ahead in the ego lane stops as the overhead signal shows yellow, holding the ego vehicle. To the left, a white van alongside inches forward in the adjacent lane and creeps past, reducing side space. On the right, a queue of cars in the right-turn lane advances slowly toward the junction, and a sedan ahead in that lane stays close to the turning path. The traffic light remains yellow over the intersection.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, in the ego lane, because of yellow traffic lights. The driver should stop to avoid colliding with the halted van at the yellow signal."}
{"id": "train_08069", "split": "train", "clip_key": "2020-0129-105040_061677_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061677"}, "frames": ["2020-0129-105040_061677_movie_t-3.jpg", "2020-0129-105040_061677_movie_t-2.jpg", "2020-0129-105040_061677_movie_t-1.jpg", "2020-0129-105040_061677_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of obstructed view behind parked van", "environment_perception": "An urban two-way neighborhood street with a single narrow lane each direction and no median runs between low-rise buildings; the pavement looks smooth and traffic is light with no moving vehicles ahead or oncoming. On the left near the camera, a pedestrian carrying bags walks along the painted shoulder close to the lane, relevant as the ego vehicle approaches. Farther ahead on the left, a silver van is parked at the curb outside shops, reducing lane width and constraining the ego vehicle's path. Another person stands farther ahead on the left by storefronts and stays near the curb without entering the roadway.", "hazard_reasoning": "There is a silver van parked on the right side of the road. This parked vehicle may obstruct visibility and hide potential hazards, so the driver should be cautious of hidden hazards behind the parked van."}
{"id": "train_08070", "split": "train", "clip_key": "2020-0220-102630_113755_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "113755"}, "frames": ["2020-0220-102630_113755_movie_t-3.jpg", "2020-0220-102630_113755_movie_t-2.jpg", "2020-0220-102630_113755_movie_t-1.jpg", "2020-0220-102630_113755_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Start moving", "environment_perception": "An urban two-way street with one lane each direction and a painted center line runs between midrise buildings; the asphalt is smooth and traffic appears light to moderate. A red motorcycle travels ahead near the left edge of the ego lane, moving slowly in the ego vehicle's path. A black compact van directly ahead in the same lane continues straight and eases its speed behind the motorcycle, limiting the ego vehicle's pace. The opposite lane looks open except for a small truck standing at the right curb further ahead. A yellow construction notice stands on the left shoulder beside a raised curb.", "hazard_reasoning": "There is a red motorcycle driving in front of the ego car in the ego lane. As the light turns green, this vehicle may accelerate or brake unpredictably, so you need to start moving promptly to maintain safe distance and avoid abrupt stopping."}
{"id": "train_08071", "split": "train", "clip_key": "2020-0228-150133_076030_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "076030"}, "frames": ["2020-0228-150133_076030_movie_t-3.jpg", "2020-0228-150133_076030_movie_t-2.jpg", "2020-0228-150133_076030_movie_t-1.jpg", "2020-0228-150133_076030_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban divided arterial with multiple same-direction lanes and a central median runs ahead, the asphalt dry and smooth as traffic slows toward a signalized junction. A silver hatchback directly ahead in the ego lane is stopped for a red light, holding the ego vehicle. To the right, a silver SUV in the adjacent through lane moves forward past the queue without merging into the ego lane. On the far side of the median, oncoming cars travel steadily in the opposite direction. The overhead traffic signal facing the ego approach shows red, and a pedestrian footbridge spans the road while pedestrians on the left sidewalk remain clear of the carriageway.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to avoid collision and comply with the traffic signal."}
{"id": "train_08072", "split": "train", "clip_key": "titan_clip_1121_000084_movie", "source": {"subset": "titan", "scenario": "clip_1121", "frame": "000084"}, "frames": ["titan_clip_1121_000084_movie_t-3.jpg", "titan_clip_1121_000084_movie_t-2.jpg", "titan_clip_1121_000084_movie_t-1.jpg", "titan_clip_1121_000084_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban residential two-way road without a centerline curves gently right; the pavement is smooth and traffic is light. A cyclist in a checkered shirt ahead crosses the roadway from the left to the right in front of the ego vehicle, moving through its path. Farther ahead near the bend, a white passenger car in the opposing lane waits facing the ego, remaining clear of the ego lane on the tight street. Close buildings and the right-hand curve create limited forward visibility.", "hazard_reasoning": "There is a cyclist wearing a checkered shirt, crossing the street to the right side, in front of the ego car. The cyclist may enter the vehicle's path unexpectedly, so the driver should reduce speed to avoid a collision."}
{"id": "train_08073", "split": "train", "clip_key": "2020-0129-105040_010401_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "010401"}, "frames": ["2020-0129-105040_010401_movie_t-3.jpg", "2020-0129-105040_010401_movie_t-2.jpg", "2020-0129-105040_010401_movie_t-1.jpg", "2020-0129-105040_010401_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road approaches an intersection, the pavement smooth and dry with moderate same-direction traffic. Ahead-left, a blue truck moves right, cutting into the ego lane from the left lane and preparing to merge directly in front. Straight ahead, a small white box truck continues in the ego lane at a steady pace, constraining the ego vehicle's speed. On the right, a large coach bus runs parallel slightly ahead in the adjacent lane, maintaining speed and limiting space to merge right.", "hazard_reasoning": "There is a blue truck lane cutting into the ego lane, from the left lane. The blue truck's merging motion requires you to slow down to maintain a safe distance and avoid a collision."}
{"id": "train_08074", "split": "train", "clip_key": "titan_clip_1352_000048_movie", "source": {"subset": "titan", "scenario": "clip_1352", "frame": "000048"}, "frames": ["titan_clip_1352_000048_movie_t-3.jpg", "titan_clip_1352_000048_movie_t-2.jpg", "titan_clip_1352_000048_movie_t-1.jpg", "titan_clip_1352_000048_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around cyclist", "environment_perception": "An urban two-lane road with a painted centerline curves gently right between buildings; the pavement is damp with patched spots and a manhole, and traffic is light with no oncoming vehicles visible. Ahead in the ego lane, a man in black pants and a matching T-shirt rides a bicycle along the left edge moving away, holding a steady line and potentially constraining the ego car's pace on the narrow lane. A metal guardrail lines the right side, and the rightward bend creates a partial blind curve.", "hazard_reasoning": "There is a man in black pants and a matching t-shirt, cycling on the left side of the road away from the ego-car. You should manoeuvre carefully around the cyclist because he is riding close to your path."}
{"id": "train_08075", "split": "train", "clip_key": "2020-0203-154554_071516_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "071516"}, "frames": ["2020-0203-154554_071516_movie_t-3.jpg", "2020-0203-154554_071516_movie_t-2.jpg", "2020-0203-154554_071516_movie_t-1.jpg", "2020-0203-154554_071516_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban arterial with two lanes in each direction and a painted median runs on dry pavement, with moderate traffic queuing near an intersection. A red sedan directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. In the adjacent right lane, several same-direction cars slow and line up toward the stop line. On the far right side of the roadway, oncoming traffic flows steadily in its own lanes, separated by the median and not interacting with us. The overhead traffic signal for our approach shows red. A roadside construction area with an excavator and barriers lines the left edge but stays outside the travel lane.", "hazard_reasoning": "There is a red sedan stopped in front of the ego-car, in the ego lane, because of a red traffic light ahead. You should stop immediately to avoid a collision with the halted vehicle and comply with the signal."}
{"id": "train_08076", "split": "train", "clip_key": "2020-0228-102841_022722_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "022722"}, "frames": ["2020-0228-102841_022722_movie_t-3.jpg", "2020-0228-102841_022722_movie_t-2.jpg", "2020-0228-102841_022722_movie_t-1.jpg", "2020-0228-102841_022722_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection on smooth pavement, with moderate same-direction traffic queued and no divider visible. The ego car follows a white sedan directly ahead that is stopped for a red traffic light, holding the lane. In the adjacent lane to the left, a green hatchback waits slightly ahead, also stationary and limiting any lane change. Farther ahead to the right, a small flatbed and a white box truck stand in the right lane at the line, waiting to proceed. Overhead signals on the right display red.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of a red traffic light ahead. The white sedan is stationary at the red signal, so the driver must stop to avoid collision and obey the traffic control."}
{"id": "train_08077", "split": "train", "clip_key": "2020-0225-102455_006548_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "006548"}, "frames": ["2020-0225-102455_006548_movie_t-3.jpg", "2020-0225-102455_006548_movie_t-2.jpg", "2020-0225-102455_006548_movie_t-1.jpg", "2020-0225-102455_006548_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban arterial with smooth asphalt and at least two same-direction lanes runs between mid-rise buildings; there is no physical median and traffic is heavy and slow. Directly ahead, a large dump truck is stopped in the ego lane as congestion ahead holds the queue, blocking the ego vehicle's path. In the adjacent lane to the left, a black sedan inches forward alongside, effectively passing the stopped lane. Farther ahead in the left lane, a white van also creeps with the queue.", "hazard_reasoning": "There is a black truck stopped in the ego lane, because of traffic congestion ahead. The stopped truck blocks forward visibility and traffic flow, requiring immediate stopping to avoid a collision."}
{"id": "train_08078", "split": "train", "clip_key": "2020-0203-114632_049564_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "049564"}, "frames": ["2020-0203-114632_049564_movie_t-3.jpg", "2020-0203-114632_049564_movie_t-2.jpg", "2020-0203-114632_049564_movie_t-1.jpg", "2020-0203-114632_049564_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane in each direction has smooth pavement and light-to-moderate flow, with no median, as the scene approaches an intersection. A cyclist in a white coat and black pants rides right to left across the crosswalk directly ahead, crossing the ego path and momentarily blocking it. A silver van ahead in the ego lane slows near the crosswalk, constraining the ego vehicle's pace. Oncoming cars continue straight in the right-side lane beyond the intersection without deviating. An overhead signal shows yellow, and a posted 50 sign is visible on the left.", "hazard_reasoning": "There is a cyclist in a white coat and black pants crossing the street in front of the ego-car, in a crosswalk, at an intersection. The driver must stop to yield to the cyclist and avoid a collision."}
{"id": "train_08079", "split": "train", "clip_key": "2020-0227-104226_055585_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "055585"}, "frames": ["2020-0227-104226_055585_movie_t-3.jpg", "2020-0227-104226_055585_movie_t-2.jpg", "2020-0227-104226_055585_movie_t-1.jpg", "2020-0227-104226_055585_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with no marked centerline runs between apartment buildings, with red-painted shoulders and smooth pavement; traffic is light. A silver hatchback ahead in the ego lane slows to a stop, temporarily holding the ego vehicle's pace, consistent with the note that a silver sedan in the lane has stopped. No oncoming vehicles are visible in the immediate scene. Parked vehicles and bicycles line both curbs, including a blue car on the left ahead and a white van on the right, slightly constricting the passage.", "hazard_reasoning": "There is a silver sedan that is in the ego lane and has stopped in front of the ego car because a silver sedan is turning ahead. You should stop to avoid colliding with the halted vehicle turning ahead."}
{"id": "train_08080", "split": "train", "clip_key": "2020-0218-103119_027929_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "027929"}, "frames": ["2020-0218-103119_027929_movie_t-3.jpg", "2020-0218-103119_027929_movie_t-2.jpg", "2020-0218-103119_027929_movie_t-1.jpg", "2020-0218-103119_027929_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane road runs through a commercial district, dividing ahead with a low hedge median to the right; the pavement is dry and smooth and traffic is light. A white box truck ahead in the ego lane proceeds straight and gradually pulls away from the camera, driving away from the ego car. To the right-front, a white sedan accelerates onto the right-hand branch, moving out of the ego lane. Farther ahead in the left lane, a red bus continues straight with a few cars around it, forming parallel traffic but not impeding the ego vehicle. Several vehicles stand along the left curb near railings, and curbside barriers and the central hedge border the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The truck ahead may slow down unexpectedly, so you should be aware to maintain a safe following distance."}
{"id": "train_08081", "split": "train", "clip_key": "titan_clip_649_000438_movie", "source": {"subset": "titan", "scenario": "clip_649", "frame": "000438"}, "frames": ["titan_clip_649_000438_movie_t-3.jpg", "titan_clip_649_000438_movie_t-2.jpg", "titan_clip_649_000438_movie_t-1.jpg", "titan_clip_649_000438_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead.", "environment_perception": "An urban residential scene shows a narrow two-way road without a centerline, bordered by buildings and a stone wall; the pavement is smooth and traffic is light. On the left edge near a silver van, a pedestrian wearing a black shirt and shorts stands at the side of the lane close to the roadway and may enter the ego lane. Far ahead in the opposite direction, a small white van approaches along the right side, potentially constraining space as vehicles pass. A silver van is parked on the left partly in the lane, creating a pinch point beside the curb.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and shorts, standing on the left side of the lane. The pedestrian near the road may step into traffic unexpectedly, so the driver should remain alert for sudden movements."}
{"id": "train_08082", "split": "train", "clip_key": "titan_clip_928_000294_movie", "source": {"subset": "titan", "scenario": "clip_928", "frame": "000294"}, "frames": ["titan_clip_928_000294_movie_t-3.jpg", "titan_clip_928_000294_movie_t-2.jpg", "titan_clip_928_000294_movie_t-1.jpg", "titan_clip_928_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian near roadway.", "environment_perception": "An urban street with mid-rise buildings and a long construction-wrapped facade on the right has a single travel lane in the ego direction on smooth but patched asphalt, and traffic is light. A black truck ahead in the ego lane moves slowly, setting the ego vehicle's pace. A small white car slightly ahead near the left curb proceeds straight in the same direction, remaining within the lane. At the right edge near the work-zone entrance, a pedestrian wearing a helmet, gray shirt, and black pants stands facing right because of the construction work, positioned close to the carriageway and relevant to the ego path. Farther ahead on the right sidewalk, another pedestrian walks along the barrier, staying off the road.", "hazard_reasoning": "There is a pedestrian wearing a helmet, gray shirt, and black pants, standing facing the right, because of construction work on the right. The pedestrian could unexpectedly step into the travel lane near the construction zone, posing a collision risk if not observed and heeded."}
{"id": "train_08083", "split": "train", "clip_key": "titan_clip_113_000360_movie", "source": {"subset": "titan", "scenario": "clip_113", "frame": "000360"}, "frames": ["titan_clip_113_000360_movie_t-3.jpg", "titan_clip_113_000360_movie_t-2.jpg", "titan_clip_113_000360_movie_t-1.jpg", "titan_clip_113_000360_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street without a centerline runs between close buildings, the pavement looks smooth and the traffic flow is light with no moving vehicles visible. On the right side near the ego lane, a pedestrian wearing a white shirt walks away from the ego car along the edge of the road, potentially coming close to the vehicle's path. Parked scooters, bags, and shop signs line the left and right edges, slightly narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking on the right side of the road, away from the ego car. The driver should slow down to maintain a safe distance, as the pedestrian may change direction or step into the lane unexpectedly."}
{"id": "train_08084", "split": "train", "clip_key": "2020-0210-101957_017915_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "017915"}, "frames": ["2020-0210-101957_017915_movie_t-3.jpg", "2020-0210-101957_017915_movie_t-2.jpg", "2020-0210-101957_017915_movie_t-1.jpg", "2020-0210-101957_017915_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban two-way road with a single lane in the ego direction runs alongside apartments, separated from oncoming lanes by a striped buffer with red bollards, and the pavement looks smooth as traffic flows light to moderate. Ahead in the ego lane, a small truck is parked near the curb, obstructing the lane and constraining the ego vehicle's path. To the right beyond the bollards, a group of oncoming vehicles, including a white box truck and several vans, moves steadily toward the camera without interacting with the ego lane. A pedestrian footbridge spans the road ahead.", "hazard_reasoning": "There is a green truck parked in the ego lane. It obstructs the driving path and requires careful maneuvering to avoid a collision."}
{"id": "train_08085", "split": "train", "clip_key": "2020-0129-105040_019592_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "019592"}, "frames": ["2020-0129-105040_019592_movie_t-3.jpg", "2020-0129-105040_019592_movie_t-2.jpg", "2020-0129-105040_019592_movie_t-1.jpg", "2020-0129-105040_019592_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down and maintain safe distance", "environment_perception": "An urban arterial with three same-direction lanes runs between mid-rise buildings, with a red left-side bus lane and a low median on the right; the pavement is smooth and traffic compresses into a slow-moving queue. A white hatchback ahead in the ego lane decelerates and closes up to the jam, constraining the ego car's pace because of congestion ahead. A large box truck slightly to the right runs alongside in the adjacent lane and also slows while continuing straight, partially blocking the forward view. Two motorcycles filter forward between the ego lane and the right lane, passing the hatchback and truck and potentially edging into the ego lane as gaps appear. No traffic signals or posted speed signs are clearly visible.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down and maintain a safe following distance to adapt to the reduced speed of traffic."}
{"id": "train_08086", "split": "train", "clip_key": "2020-0204-150838_031777_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "031777"}, "frames": ["2020-0204-150838_031777_movie_t-3.jpg", "2020-0204-150838_031777_movie_t-2.jpg", "2020-0204-150838_031777_movie_t-1.jpg", "2020-0204-150838_031777_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A busy urban arterial with multiple same-direction lanes and smooth pavement approaches a large intersection, and overall traffic is heavy and slow. A white van directly ahead in the ego lane is stopped, holding the ego car in place. A black sedan alongside on the left creeps forward in the adjacent lane, narrowing space and limiting a leftward lane change. Another white van ahead slightly to the left queues near the intersection in the next lane, moving intermittently with the line of vehicles. Large groups of pedestrians cross the wide crosswalk on the right, keeping vehicles at the stop.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car. The stopped van poses a collision hazard, so the driver should stop to maintain a safe following distance."}
{"id": "train_08087", "split": "train", "clip_key": "2020-0227-104226_032644_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "032644"}, "frames": ["2020-0227-104226_032644_movie_t-3.jpg", "2020-0227-104226_032644_movie_t-2.jpg", "2020-0227-104226_032644_movie_t-1.jpg", "2020-0227-104226_032644_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane in each direction and no median appears, the pavement smooth and dry with light to moderate flow. A zebra crossing passes under the camera as the approach to an intersection shows a green signal. A white box truck ahead in the ego lane proceeds straight through the junction because the signal is green, setting the ego car's pace. An oncoming Isuzu truck travels toward the camera in the opposing right lane and continues straight past the crosswalk while keeping its lane. A few distant cars follow in both directions, and no pedestrians or obstacles are visible.", "hazard_reasoning": "There is a white truck driving in front of the ego car in the ego lane, because of the green traffic light. The truck may obscure your view ahead or change speed unexpectedly, so stay cautious."}
{"id": "train_08088", "split": "train", "clip_key": "2020-0131-135401_003807_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003807"}, "frames": ["2020-0131-135401_003807_movie_t-3.jpg", "2020-0131-135401_003807_movie_t-2.jpg", "2020-0131-135401_003807_movie_t-1.jpg", "2020-0131-135401_003807_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one narrow lane per direction runs between buildings, the pavement appears smooth and traffic is light but constrained by a blockage ahead. A white box truck is stopped directly ahead in the ego lane, forcing the ego vehicle to wait. On the right, an oncoming cyclist rides along the opposite lane close to the guardrail and continues past without entering the ego path. On the left sidewalk ahead, two pedestrians with a stroller walk along the curb and remain off the roadway. An overhead circular sign shows 40, indicating the posted speed.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The stopped truck directly ahead blocks your path and requires you to stop immediately to avoid a collision."}
{"id": "train_08089", "split": "train", "clip_key": "2020-0212-150403_020086_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "020086"}, "frames": ["2020-0212-150403_020086_movie_t-3.jpg", "2020-0212-150403_020086_movie_t-2.jpg", "2020-0212-150403_020086_movie_t-1.jpg", "2020-0212-150403_020086_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with no physical median and smooth pavement carries moderate two-way traffic toward a signalized intersection. Overhead signals show green for the ego direction. A black SUV directly ahead in the ego lane slows, constraining the ego vehicle's pace. To the left, a yellow taxi in the adjacent curb lane moves slowly alongside while a delivery truck is parked at the left curb, narrowing that lane and limiting a simple lane change. Farther ahead in the opposite lanes, a white van approaches with other oncoming vehicles, all remaining in their lanes and posing no immediate conflict.", "hazard_reasoning": "There is a black SUV slowing down in front of the ego car in the ego lane. You should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_08090", "split": "train", "clip_key": "titan_clip_106_000306_movie", "source": {"subset": "titan", "scenario": "clip_106", "frame": "000306"}, "frames": ["titan_clip_106_000306_movie_t-3.jpg", "titan_clip_106_000306_movie_t-2.jpg", "titan_clip_106_000306_movie_t-1.jpg", "titan_clip_106_000306_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the vehicle", "environment_perception": "A narrow urban street with a single undivided lane runs between tall buildings; the pavement looks smooth and traffic is light. In the near foreground, a couple crosses from left to right ahead of the ego vehicle, constraining the approach. Farther ahead in the same direction, a red hatchback is stopped along the left side within the ego lane and may obstruct the path. On the right, two pedestrians stand beside a coned-off construction site and remain outside the lane. Orange cones and barriers narrow the right edge, and no prominent signals or posted speeds are visible.", "hazard_reasoning": "There is a red hatchback stopped on the left side of the road, in the ego lane. It blocks the ego lane and poses a collision risk, so the driver should carefully manoeuvre around it."}
{"id": "train_08091", "split": "train", "clip_key": "2020-0204-103442_086245_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "086245"}, "frames": ["2020-0204-103442_086245_movie_t-3.jpg", "2020-0204-103442_086245_movie_t-2.jpg", "2020-0204-103442_086245_movie_t-1.jpg", "2020-0204-103442_086245_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two lanes in the ego direction has smooth pavement and slow, queuing traffic toward a signalized intersection ahead. A gray van directly ahead in the ego lane is stopped because of congestion ahead, blocking the path and dictating the pace. A silver car in the right adjacent lane creeps forward slightly ahead, limiting any immediate move to the right. Farther ahead, multiple vehicles in both lanes bunch toward the junction and move intermittently, while opposing traffic runs separately behind a central barrier.", "hazard_reasoning": "There is a gray van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_08092", "split": "train", "clip_key": "2020-0220-102630_078244_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "078244"}, "frames": ["2020-0220-102630_078244_movie_t-3.jpg", "2020-0220-102630_078244_movie_t-2.jpg", "2020-0220-102630_078244_movie_t-1.jpg", "2020-0220-102630_078244_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial with two lanes in the same direction shows smooth pavement and moderate flow, with the left lane moving better than the right. A white van ahead in the ego lane accelerates as traffic clears ahead, and the ego vehicle follows at a steady gap. To the right, a line of cars and a bus creeps forward in the adjacent lane, slowing that side but not encroaching on the ego lane. A silver hatchback runs alongside in the right lane, matching speed with little change. Low shrubs and cones edge the left curb but remain outside the roadway.", "hazard_reasoning": "There is a white van speeding up in the ego lane, because traffic is clearing ahead. The van's sudden acceleration may lead to abrupt braking if conditions change, so maintain a safe following distance under this situation."}
{"id": "train_08093", "split": "train", "clip_key": "2020-0226-140503_057179_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "057179"}, "frames": ["2020-0226-140503_057179_movie_t-3.jpg", "2020-0226-140503_057179_movie_t-2.jpg", "2020-0226-140503_057179_movie_t-1.jpg", "2020-0226-140503_057179_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked truck blocking view", "environment_perception": "An urban two-way street with a single narrow lane each way, no median, and patched asphalt; traffic is light and the ego vehicle proceeds slowly due to vehicles stopped along the left curb. Ahead on the left a red delivery truck is parked, narrowing the ego lane. Slightly nearer, a white van is also parked along the left side, limiting room for passing and constraining the pace. On the right, a pedestrian walks along the sidewalk behind a railing, remaining clear of the roadway.", "hazard_reasoning": "There is a red truck parked on the left side of the road. The parked truck obstructs the driver's view of the road ahead and could conceal other hazards, so the driver should be aware and adjust speed or position if needed."}
{"id": "train_08094", "split": "train", "clip_key": "titan_clip_1181_000042_movie", "source": {"subset": "titan", "scenario": "clip_1181", "frame": "000042"}, "frames": ["titan_clip_1181_000042_movie_t-3.jpg", "titan_clip_1181_000042_movie_t-2.jpg", "titan_clip_1181_000042_movie_t-1.jpg", "titan_clip_1181_000042_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban two-way street with no median and intact but slightly worn pavement is shown, and traffic flow is light. Several vehicles are parked along the left side, including a white car and vans, narrowing the ego vehicle's left-side travel lane. On the right edge of the road a pedestrian walks toward the ego car, staying near the curb and possibly edging into the lane. Ahead near the center of the ego lane another pedestrian walks away down the street, directly setting the vehicle's pace. Farther ahead on the right, a person with a bicycle lingers near the curb by a side street, creating a minor side conflict.", "hazard_reasoning": "There is a pedestrian wearing a brown suit, walking on the right side of the road, towards the ego car. The driver should carefully manoeuvre to avoid the pedestrian entering the vehicle's path."}
{"id": "train_08095", "split": "train", "clip_key": "titan_clip_945_000468_movie", "source": {"subset": "titan", "scenario": "clip_945", "frame": "000468"}, "frames": ["titan_clip_945_000468_movie_t-3.jpg", "titan_clip_945_000468_movie_t-2.jpg", "titan_clip_945_000468_movie_t-1.jpg", "titan_clip_945_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "An urban two-way street with single lanes and no median shows smooth pavement and light traffic as the road gently curves left ahead. On the right edge near the camera, an oncoming cyclist in a white top rides toward the ego vehicle along the curb, traveling close to the ego lane. No other moving vehicles are visible in the same direction or oncoming. A 30 speed marking is painted on the roadway, and several parked bicycles line the sidewalks close to the carriageway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the right side of the road, towards the ego car. The pedestrian could step into your path unexpectedly as you approach; stay alert for crossing pedestrians ahead aligned with the warning."}
{"id": "train_08096", "split": "train", "clip_key": "2020-0131-103016_041057_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "041057"}, "frames": ["2020-0131-103016_041057_movie_t-3.jpg", "2020-0131-103016_041057_movie_t-2.jpg", "2020-0131-103016_041057_movie_t-1.jpg", "2020-0131-103016_041057_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided boulevard with three lanes in the ego direction runs between office towers and tree-lined sidewalks, the pavement smooth and traffic light. A scooter ahead slightly left rides steadily in the ego lane, remaining in the path and loosely setting the pace. Farther ahead, a few cars in the center lanes proceed straight with wide gaps, aligned with the ego vehicle's route. Across the planted median to the right, oncoming cars travel along the opposite carriageway and stay separated. An overhead Japanese information sign spans the lanes.", "hazard_reasoning": "No hazards present; road is clear, so proceed normally with usual caution."}
{"id": "train_08097", "split": "train", "clip_key": "2020-0203-154554_079937_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "079937"}, "frames": ["2020-0203-154554_079937_movie_t-3.jpg", "2020-0203-154554_079937_movie_t-2.jpg", "2020-0203-154554_079937_movie_t-1.jpg", "2020-0203-154554_079937_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with buildings and leafless trees lines the scene; the dry pavement has clear markings and no physical median, and same-direction traffic is heavy and mostly stopped while oncoming flow remains steady. A white hatchback directly ahead in the ego lane is halted because of congestion further up, setting the pace for the ego vehicle. A black sedan slightly ahead to the left creeps forward in the parallel same-direction lane, queuing beside the ego vehicle and limiting room to maneuver. In the oncoming lane to the right, a white van approaches and passes smoothly through the gap in opposing traffic.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, because of traffic congestion ahead. The driver must stop promptly to avoid colliding with the halted vehicle."}
{"id": "train_08098", "split": "train", "clip_key": "2020-0227-104226_021167_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "021167"}, "frames": ["2020-0227-104226_021167_movie_t-3.jpg", "2020-0227-104226_021167_movie_t-2.jpg", "2020-0227-104226_021167_movie_t-1.jpg", "2020-0227-104226_021167_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane surface road runs under an elevated structure, with two same-direction lanes and a guardrail on the right; the pavement is dry and traffic is heavy and mostly stopped. A white van directly ahead in the ego lane is stopped because of a red traffic light ahead, holding the ego vehicle in the queue. A compact white car further ahead in the same lane inches forward with the line of vehicles, maintaining the jam. In the adjacent left lane, another van draws alongside and slows to a stop, reducing opportunities to change lanes. A fenced area with parked bicycles lines the right, and there are no obvious pedestrians or hazards.", "hazard_reasoning": "There is a white van stopped in the ego lane because of a red traffic light ahead. The driver must stop to prevent a rear-end collision with the halted van at the red light."}
{"id": "train_08099", "split": "train", "clip_key": "2020-0206-101736_058991_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "058991"}, "frames": ["2020-0206-101736_058991_movie_t-3.jpg", "2020-0206-101736_058991_movie_t-2.jpg", "2020-0206-101736_058991_movie_t-1.jpg", "2020-0206-101736_058991_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban two-lane road runs under an elevated expressway, bounded by guardrails with smooth pavement, and traffic is heavy and slowing. A white van ahead in the ego lane slows because of traffic congestion ahead, holding the ego vehicle's pace. A loaded truck slightly ahead to the left in the adjacent lane moves slowly alongside, limiting opportunities to pass. Farther ahead, a line of cars queues under the overpass and inches forward in both lanes. An overhead signal gantry is visible with dark lenses, and a bridge pier stands close to the right shoulder.", "hazard_reasoning": "There is a white van slowing in the ego lane because of traffic congestion ahead. The van's slowdown due to congestion may require you to reduce speed to maintain a safe following distance."}
{"id": "train_08100", "split": "train", "clip_key": "2020-0220-102630_075437_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "075437"}, "frames": ["2020-0220-102630_075437_movie_t-3.jpg", "2020-0220-102630_075437_movie_t-2.jpg", "2020-0220-102630_075437_movie_t-1.jpg", "2020-0220-102630_075437_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with one lane each direction, a solid yellow centerline, dry pavement, and moderate flow; the ego vehicle proceeds in the left lane past flexible bollards and beneath a pedestrian overpass. A white van ahead in the ego lane slows due to traffic congestion ahead, constraining our pace. Several oncoming cars in the right-side lane move steadily without encroaching. Parked trucks and cars line the left curb near the camera but remain outside the travel lane. A blue overhead direction sign is visible above the roadway.", "hazard_reasoning": "There is a white van slowing in the ego lane, away from the ego car, because of traffic congestion ahead. The slowing vehicle signals dense traffic ahead, so reduce speed to maintain a safe following distance."}
{"id": "train_08101", "split": "train", "clip_key": "2020-0131-135401_050394_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "050394"}, "frames": ["2020-0131-135401_050394_movie_t-3.jpg", "2020-0131-135401_050394_movie_t-2.jpg", "2020-0131-135401_050394_movie_t-1.jpg", "2020-0131-135401_050394_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Start moving", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy, slow traffic that begins to roll forward near a signalized intersection amid mid-rise buildings. A white hatchback directly ahead in the ego lane moves off slowly as the light turns green, setting the ego vehicle's pace. In the adjacent right lane, a white van advances alongside at a similar speed, keeping the lanes closely packed and limiting room to change right. Farther ahead, a queue of vehicles continues through the junction at a crawl, maintaining the congestion. Overhead traffic signals ahead display green as the flow restarts.", "hazard_reasoning": "There is a white hatchback slowing away from the ego car, in the ego lane, because the traffic light turned green. The driver should start moving to follow the flow of traffic once the light changes."}
{"id": "train_08102", "split": "train", "clip_key": "2020-0127-132751_022194_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "022194"}, "frames": ["2020-0127-132751_022194_movie_t-3.jpg", "2020-0127-132751_022194_movie_t-2.jpg", "2020-0127-132751_022194_movie_t-1.jpg", "2020-0127-132751_022194_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "be aware", "environment_perception": "An urban multi-lane arterial runs under an elevated structure with smooth, dry pavement, and traffic is light to moderate moving steadily. A black motorcycle travels ahead in the ego lane and pulls away gradually, remaining centered and briefly setting the pace. In the left lane, a small box truck continues straight a short distance ahead near the curb, moving slightly slower but staying in its lane. Farther ahead to the right, a minivan and a car proceed in the adjacent lane at similar speed without merging toward the ego lane. Overhead blue direction signs and a pedestrian footbridge span the road, and no traffic signals or hazards are apparent.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane away from the ego car. The motorcyclist ahead may suddenly slow down or change lanes, requiring increased attention to maintain a safe following distance."}
{"id": "train_08103", "split": "train", "clip_key": "2020-0227-104226_080902_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "080902"}, "frames": ["2020-0227-104226_080902_movie_t-3.jpg", "2020-0227-104226_080902_movie_t-2.jpg", "2020-0227-104226_080902_movie_t-1.jpg", "2020-0227-104226_080902_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with three same-direction lanes and a narrow raised median has dry pavement and heavy, slow traffic. A red SUV directly ahead in the ego lane slows because a truck farther ahead is reducing speed, constraining the ego vehicle's pace. In the left lane, a white box truck slightly ahead also moves slowly alongside, limiting space to change lanes. Beyond the median to the right, a line of oncoming heavy trucks stands or creeps in a queue.", "hazard_reasoning": "There is a red SUV that is slowing down in the ego lane, because of the truck slowing ahead. The driver should slow down to maintain a safe following distance and avoid colliding with the decelerating vehicle."}
{"id": "train_08104", "split": "train", "clip_key": "2020-0129-105040_087146_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "087146"}, "frames": ["2020-0129-105040_087146_movie_t-3.jpg", "2020-0129-105040_087146_movie_t-2.jpg", "2020-0129-105040_087146_movie_t-1.jpg", "2020-0129-105040_087146_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In a dense urban area, the ego-vehicle proceeds in the left lane of a two-way road that curves right at a T-junction, with no median, smooth pavement, and light traffic. A pedestrian footbridge spans the junction and casts broad shadows, and white railings border the corner. Two small cars wait on a narrow side street ahead-left, facing the main road and stopped at its mouth, potentially entering our path after we pass. A pedestrian stands on the right sidewalk at the footbridge stairs, stationary and looking toward the road. Parked vehicles sit in a recessed lot across the junction behind the railings.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08105", "split": "train", "clip_key": "titan_clip_1120_000066_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1120_000066_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1120_000066_movie_t-3_augB1.jpg", "titan_clip_1120_000066_movie_t-2_augB1.jpg", "titan_clip_1120_000066_movie_t-1_augB1.jpg", "titan_clip_1120_000066_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "An urban commercial street with a narrow two-way carriageway lacks a median and has smooth dry pavement; traffic is slow moving amid heavy foot activity. Ahead in the ego lane, a pedestrian wearing black clothing crosses from left to right in front of the car, continuing toward the right sidewalk and occupying the path. Beside him, several other pedestrians cross the same stretch slightly farther ahead, making nearby vehicles brake and constraining the pace. On the opposite side, a dark hatchback approaches as oncoming traffic, rolling slowly in its lane while yielding to the crossing people.", "hazard_reasoning": "There is a pedestrian wearing black clothing, crossing the street to the right side, in front of the ego car. The pedestrian has right of way and is entering the vehicle's path, so the driver should yield and reduce speed to avoid a collision."}
{"id": "train_08106", "split": "train", "clip_key": "2020-0205-103411_010612_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "010612"}, "frames": ["2020-0205-103411_010612_movie_t-3.jpg", "2020-0205-103411_010612_movie_t-2.jpg", "2020-0205-103411_010612_movie_t-1.jpg", "2020-0205-103411_010612_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way street with no median and smooth pavement leads to a zebra crosswalk at an intersection, and traffic is light. A pedestrian wearing black trousers and a jacket crosses the crosswalk from right to left directly in front of the ego car. An oncoming dark van travels straight through the intersection in the opposite lane beyond the crosswalk. Another pedestrian waits at the left curb near the crosswalk. Overhead traffic signals and street signs are visible above the junction.", "hazard_reasoning": "There is a pedestrian wearing a pair of black trousers and a jacket, crossing the street, from the right side to the left side, in front of the ego car. The driver should slow down to yield and prevent a collision with the crossing pedestrian."}
{"id": "train_08107", "split": "train", "clip_key": "titan_clip_351_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_351_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_351_000198_movie_t-3_augB1.jpg", "titan_clip_351_000198_movie_t-2_augB1.jpg", "titan_clip_351_000198_movie_t-1_augB1.jpg", "titan_clip_351_000198_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop and let pedestrian cross", "environment_perception": "A narrow urban street with mid-rise buildings has a single travel lane and smooth pavement, and traffic is light and slow due to roadside activity constricting the lane. Ahead on the left, a large delivery truck is stopped with its cargo door open, intruding into the ego lane and limiting space to pass. A pedestrian wearing black shorts and a backpack steps from the right sidewalk and crosses in front of the ego car toward the left, directly along its path. Farther ahead on the right, another person stands by a post on the sidewalk without entering the roadway. Parked vans occupy garages on the right, and no moving oncoming vehicles are visible.", "hazard_reasoning": "There is a pedestrian wearing black shorts, carrying a backpack, crossing the street in front of the ego car, from the right side to the left side. The driver should stop because the pedestrian is entering the vehicle's path and has right-of-way."}
{"id": "train_08108", "split": "train", "clip_key": "titan_clip_227_000132_movie", "source": {"subset": "titan", "scenario": "clip_227", "frame": "000132"}, "frames": ["titan_clip_227_000132_movie_t-3.jpg", "titan_clip_227_000132_movie_t-2.jpg", "titan_clip_227_000132_movie_t-1.jpg", "titan_clip_227_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street runs between tall buildings, the ego vehicle traveling in the left lane on smooth pavement with no median and light traffic. Ahead in the same direction, a pedestrian wearing a white shirt and carrying a backpack walks away along the left side of the roadway near the lane edge, relevant to the ego vehicle's path as it approaches. Several trucks are parked along the right curb, including a small pickup under an orange tarp and a box truck farther ahead, reducing clearance and narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, walking on the left side of the road, away from the ego car. The driver should manoeuvre carefully around the pedestrian to prevent a collision given the restricted view caused by parked vehicles."}
{"id": "train_08109", "split": "train", "clip_key": "2020-0228-102841_081998_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_081998_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_081998_movie_t-3_augB1.jpg", "2020-0228-102841_081998_movie_t-2_augB1.jpg", "2020-0228-102841_081998_movie_t-1_augB1.jpg", "2020-0228-102841_081998_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the motorcycle ahead.", "environment_perception": "An urban multi-lane road with several same-direction lanes and a right-side barrier appears dry and in good condition, with moderate, steadily flowing traffic. A black motorcycle directly ahead in the ego lane accelerates straight through the junction on a green light, leading the ego car. A white sedan slightly ahead to the left travels straight at similar speed alongside, limiting space for a leftward lane change. A black van ahead in the right lane proceeds straight and keeps that adjacent lane occupied. Farther ahead, small box trucks continue forward in the center lanes, setting the overall pace.", "hazard_reasoning": "There is a black motorcycle driving forward in the ego lane because of the green traffic light, in front of the ego car. The green light could change soon and the motorcycle may brake or stop unexpectedly, so maintain caution."}
{"id": "train_08110", "split": "train", "clip_key": "2020-0203-114632_083883_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "083883"}, "frames": ["2020-0203-114632_083883_movie_t-3.jpg", "2020-0203-114632_083883_movie_t-2.jpg", "2020-0203-114632_083883_movie_t-1.jpg", "2020-0203-114632_083883_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban road under an elevated expressway approaches a signalized intersection, the pavement dry and smooth with light overall traffic. A silver minivan directly ahead in the ego lane speeds up and continues straight, momentarily setting the pace for the ego vehicle. On the cross street to the right, a large white tanker truck is stopped near the corner and remains out of the ego path. Farther to the right beyond the junction, a dark car sits at the curb, not moving. Overhead traffic signals and signage are visible at the intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08111", "split": "train", "clip_key": "2020-0210-101957_042000_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "042000"}, "frames": ["2020-0210-101957_042000_movie_t-3.jpg", "2020-0210-101957_042000_movie_t-2.jpg", "2020-0210-101957_042000_movie_t-1.jpg", "2020-0210-101957_042000_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with a painted divider and smooth pavement carries moderate traffic that bunches into a short queue ahead. In the ego lane, a black hatchback immediately ahead is stopped because traffic is congested further up, holding the ego vehicle. In the adjacent right lanes, a white compact and a dark minivan slightly ahead travel slowly in the same direction, matching the queue and remaining parallel to the ego path. An overhead blue guide sign indicates left for Asagaya and straight for other destinations. A white wagon stands at the left curb beyond the guardrail, outside the flow.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid rear-ending the stopped vehicle due to congestion ahead."}
{"id": "train_08112", "split": "train", "clip_key": "2020-0225-102455_017875_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "017875"}, "frames": ["2020-0225-102455_017875_movie_t-3.jpg", "2020-0225-102455_017875_movie_t-2.jpg", "2020-0225-102455_017875_movie_t-1.jpg", "2020-0225-102455_017875_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of turning sedan", "environment_perception": "An urban signalized multi-lane intersection with clear zebra crossings and smooth dry pavement comes into view, and traffic moves at a moderate pace without a median. On the right side of the intersection, a blue sedan turns left across the junction into the oncoming traffic lane on the left of the ego-car, passing across the ego's front. In the middle ahead, a box truck proceeds from left to right while completing a right turn, occupying the center of the junction in front of the ego lane. At the near-left crosswalk, a pedestrian in dark clothing walks rightward across the ego approach. Signal heads are visible on mast arms at the corners.", "hazard_reasoning": "There is a blue sedan on the right side of the intersection, turning left into the oncoming traffic lane on the left of the ego-car. The turning sedan may unexpectedly merge into your lane and cause a collision risk, so you should be cautious."}
{"id": "train_08113", "split": "train", "clip_key": "2020-0218-103119_034769_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "034769"}, "frames": ["2020-0218-103119_034769_movie_t-3.jpg", "2020-0218-103119_034769_movie_t-2.jpg", "2020-0218-103119_034769_movie_t-1.jpg", "2020-0218-103119_034769_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction runs between mid-rise buildings; a narrow raised median with twin white lines separates directions, the pavement looks smooth, and traffic is light. A gray box truck is stopped directly ahead in the ego lane and remains stationary, blocking the path and constraining the ego vehicle's movement. The oncoming lane to the right stays clear with no vehicles approaching near the truck. A speed limit sign stands on the left sidewalk, and a side street opens from the right just beyond the stopped truck. No other notable hazards or road users are visible.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, in the ego lane. The gray truck's stationary position indicates a need to stop to avoid a rear-end collision."}
{"id": "train_08114", "split": "train", "clip_key": "2020-0203-154554_038652_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "038652"}, "frames": ["2020-0203-154554_038652_movie_t-3.jpg", "2020-0203-154554_038652_movie_t-2.jpg", "2020-0203-154554_038652_movie_t-1.jpg", "2020-0203-154554_038652_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated roadway with two same-direction lanes runs beneath a viaduct, bordered by concrete barriers; the pavement appears dry and smooth and traffic moves slowly with light to moderate density. Ahead in the ego lane, a white box truck slows, constraining the ego car's pace. In the adjacent right lane, a white van slightly ahead proceeds at a similar low speed, limiting opportunities to pass. Overhead support columns and a gentle right-hand curve partially obscure the view further ahead.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's deceleration could require the driver to brake suddenly to maintain a safe distance and avoid a collision."}
{"id": "train_08115", "split": "train", "clip_key": "2020-0203-154554_030247_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "030247"}, "frames": ["2020-0203-154554_030247_movie_t-3.jpg", "2020-0203-154554_030247_movie_t-2.jpg", "2020-0203-154554_030247_movie_t-1.jpg", "2020-0203-154554_030247_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the van cutting in", "environment_perception": "An urban arterial under an elevated expressway carries same-direction traffic on multiple lanes with smooth pavement and a steady moderate flow. A silver van ahead cuts in from the left lane into the ego lane, sliding across to occupy the space directly in front. Farther ahead in the same lane, a small freight truck moves more slowly, compressing gaps and setting the pace. In the adjacent right lane, a white kei van continues straight slightly ahead without merging. Overhead blue direction signs in Japanese, including Hachioji and Hatsudai, mark upcoming route choices.", "hazard_reasoning": "There is a silver van cutting in front of the ego car, from the left lane to the ego lane. Drivers should be aware of the van's sudden merge to anticipate its movement and adjust speed accordingly."}
{"id": "train_08116", "split": "train", "clip_key": "titan_clip_253_000372_movie", "source": {"subset": "titan", "scenario": "clip_253", "frame": "000372"}, "frames": ["titan_clip_253_000372_movie_t-3.jpg", "titan_clip_253_000372_movie_t-2.jpg", "titan_clip_253_000372_movie_t-1.jpg", "titan_clip_253_000372_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the white van.", "environment_perception": "An urban neighborhood with a narrow two-way street lacking a centerline is bordered by shops on the left and a park behind white railings on the right; the asphalt looks slightly worn and traffic is light. A white van is stopped ahead in the ego lane with its hazard lights flashing, occupying the path and blocking forward travel. Two pedestrians emerge from the left storefront side and cross diagonally ahead toward the park, moving through the ego vehicle's lane and directly in its path. Another pedestrian walks along the left edge near the shops, staying at the roadside. No salient signals or posted speeds stand out, and the railings and the stopped van make the corridor tight.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because they have their hazard lights flashing. The stopped van blocks the travel lane and requires the driver to manoeuvre carefully to avoid a collision."}
{"id": "train_08117", "split": "train", "clip_key": "2020-0220-102630_037099_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "037099"}, "frames": ["2020-0220-102630_037099_movie_t-3.jpg", "2020-0220-102630_037099_movie_t-2.jpg", "2020-0220-102630_037099_movie_t-1.jpg", "2020-0220-102630_037099_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a signalised intersection with good pavement and moderate traffic that bunches up at the stop line. A black van directly ahead in the ego lane is stopped because the traffic light is red, holding the ego vehicle. A black taxi alongside on the left lane is also stopped, restricting a leftward lane change. Slightly ahead to the left, a covered flatbed truck waits in its lane, contributing to the queue and partly blocking the view toward the intersection. Several pedestrians stand near the right-side crosswalk at the corner. The overhead traffic signal facing the ego direction shows a solid red.", "hazard_reasoning": "There is a black van stopped in front of the ego car because of a red traffic light. The driver should stop to prevent a collision with the halted vehicle at the red signal."}
{"id": "train_08118", "split": "train", "clip_key": "2020-0217-110854_059778_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "059778"}, "frames": ["2020-0217-110854_059778_movie_t-3.jpg", "2020-0217-110854_059778_movie_t-2.jpg", "2020-0217-110854_059778_movie_t-1.jpg", "2020-0217-110854_059778_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs under an elevated expressway, with two lanes in the ego direction and a fenced median separating oncoming traffic; the pavement is smooth and the flow is moderate. A silver van ahead in the ego lane accelerates away as the traffic in front moves, increasing its gap from the camera. A white hatchback slightly ahead to the left holds a steady pace in the adjacent lane without encroaching. Farther ahead, vehicles in the right lane proceed smoothly and remain clear of the ego path. Overhead blue direction signs show Kofu 121 km, Hachioji 33 km, and Takaido 2 km.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car, because traffic ahead is moving. The driver should follow the vehicle ahead to maintain a safe and consistent flow of traffic."}
{"id": "train_08119", "split": "train", "clip_key": "2020-0218-103119_002240_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002240"}, "frames": ["2020-0218-103119_002240_movie_t-3.jpg", "2020-0218-103119_002240_movie_t-2.jpg", "2020-0218-103119_002240_movie_t-1.jpg", "2020-0218-103119_002240_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately behind the van", "environment_perception": "An urban multi-lane arterial with a planted median and smooth pavement carries moderate two-way traffic under clear daylight. Directly ahead in the ego lane, a white van slows to a stop and waits to turn right at the intersection because oncoming traffic continues through, temporarily controlling the ego vehicle's pace. Slightly ahead in the adjacent left lane, another small van proceeds straight at a steady speed, unaffected by the blockage. In the opposite carriageway, a stream of cars approaches from the right side of the frame, their movement across the junction preventing right-turn gaps. A crosswalk and side street appear on the right with pedestrians on the sidewalk, but none step into the roadway.", "hazard_reasoning": "There is a white van waiting to turn right in the ego lane because of oncoming traffic. The driver must stop to avoid rear-ending the halted van."}
{"id": "train_08120", "split": "train", "clip_key": "titan_clip_435_000306_movie", "source": {"subset": "titan", "scenario": "clip_435", "frame": "000306"}, "frames": ["titan_clip_435_000306_movie_t-3.jpg", "titan_clip_435_000306_movie_t-2.jpg", "titan_clip_435_000306_movie_t-1.jpg", "titan_clip_435_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian.", "environment_perception": "An urban shopping street forms a single narrow lane with block paving and no divider, and traffic is light. On the left, a blue box truck is stopped partly in the lane beside cones and a sign, reducing the usable width and blocking sightlines. Ahead of the truck, a pedestrian carrying a book walks toward the vehicle along the left edge and may enter the travel lane. Farther ahead near the center, two pedestrians walk away down the street, constraining the available path.", "hazard_reasoning": "There is a pedestrian carrying a book, walking on the left side of the road, toward the ego car. The pedestrian is moving into the vehicle's path and could cause a collision if not avoided, so the driver should manoeuvre around the pedestrian."}
{"id": "train_08121", "split": "train", "clip_key": "2020-0210-155354_025171_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "025171"}, "frames": ["2020-0210-155354_025171_movie_t-3.jpg", "2020-0210-155354_025171_movie_t-2.jpg", "2020-0210-155354_025171_movie_t-1.jpg", "2020-0210-155354_025171_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop promptly.", "environment_perception": "An urban arterial with two lanes in the ego direction and no visible median appears, the pavement is clean, and traffic is slow and queued at an intersection. Directly ahead in the ego lane, a black SUV is stopped beneath a green traffic light because of congestion, holding the ego vehicle. In the adjacent right lane, a large yellow dump truck slightly ahead creeps forward with the queue, constraining pace and sightlines. On the left sidewalk near the crosswalk, a cyclist rides forward parallel to traffic toward the intersection, potentially approaching the crossing. The overhead traffic signal remains green.", "hazard_reasoning": "There is a black SUV stopped beneath a green traffic light in the ego lane because of traffic congestion. Stop promptly to avoid colliding with the stopped SUV, which is blocking the lane."}
{"id": "train_08122", "split": "train", "clip_key": "titan_clip_856_000336_movie", "source": {"subset": "titan", "scenario": "clip_856", "frame": "000336"}, "frames": ["titan_clip_856_000336_movie_t-3.jpg", "titan_clip_856_000336_movie_t-2.jpg", "titan_clip_856_000336_movie_t-1.jpg", "titan_clip_856_000336_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban commercial street with a single undivided lane and brick pavement runs between shopfronts, with very light vehicular traffic and steady pedestrian activity. On the right side ahead, a pedestrian carrying a handbag walks away from the ego car along the edge of the roadway, continuing in the lane but not entering the ego path immediately. Mid-lane ahead, a person in dark clothes crosses from left to right at a diagonal, walking steadily and temporarily occupying the ego lane, which constrains any forward movement. Farther ahead in the center, a small group of pedestrians walks away along the lane and stays ahead of the vehicle. Orange cones line the right storefront and parked bicycles sit near the curb, narrowing the usable space.", "hazard_reasoning": "There are a pedestrian carrying a handbag and walking on the right side of the road, away from the ego car. The pedestrian may step into the vehicle's path, so the driver should manoeuvre carefully around them."}
{"id": "train_08123", "split": "train", "clip_key": "titan_clip_1103_000348_movie", "source": {"subset": "titan", "scenario": "clip_1103", "frame": "000348"}, "frames": ["titan_clip_1103_000348_movie_t-3.jpg", "titan_clip_1103_000348_movie_t-2.jpg", "titan_clip_1103_000348_movie_t-1.jpg", "titan_clip_1103_000348_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian approaching from left", "environment_perception": "A narrow urban shopping street with a single shared lane and tiled pavement has no median or centerline, and traffic is light and slow. Ahead to the right, a cyclist rides toward the camera near the middle of the lane, occupying the ego path. On the left side, a woman in a white shirt and a black skirt walks toward the ego vehicle along the curb and nears the travel path. Farther ahead, several pedestrians move along and across the street, filling parts of the lane in front of the ego vehicle. Shopfront signboards encroach slightly into the roadway, narrowing the passage.", "hazard_reasoning": "There is a woman wearing a white shirt and a black skirt, and walking towards the ego car, on the left side of the road. The woman is approaching the vehicle from the left and may step into its path, so the driver should be aware and prepared to adjust speed."}
{"id": "train_08124", "split": "train", "clip_key": "2020-0204-103442_039378_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "039378"}, "frames": ["2020-0204-103442_039378_movie_t-3.jpg", "2020-0204-103442_039378_movie_t-2.jpg", "2020-0204-103442_039378_movie_t-1.jpg", "2020-0204-103442_039378_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial runs under an elevated expressway, with a right-side guardrail and smooth pavement; traffic is moderate and flows steadily. Ahead in the ego lane a white box truck moves away from the camera, gradually increasing the gap. To the right, a white wagon is close in the adjacent lane and proceeds forward, overtaking the ego vehicle. Farther ahead in the middle-right lanes several passenger cars travel at similar speed and maintain their lanes without abrupt changes. Along the left curb, a flatbed truck is stopped in a parking space, remaining outside the travel lanes. No salient signals or signs are visible, and there are no evident hazards or work zones.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08125", "split": "train", "clip_key": "2020-0131-135401_007245_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "007245"}, "frames": ["2020-0131-135401_007245_movie_t-3.jpg", "2020-0131-135401_007245_movie_t-2.jpg", "2020-0131-135401_007245_movie_t-1.jpg", "2020-0131-135401_007245_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban neighborhood street with a single lane each way and no median appears narrow and dry, and traffic in the ego lane is stopped. A white box truck immediately ahead in the ego lane stands still because of congestion further up, blocking the ego path. On the left, several pedestrians walk along the sidewalk near a side street and continue past without entering the roadway. Multiple small vans are parked along the left edge, reducing lateral space. The right side is lined by a fence and trees, and strong sun glare from the upper right lowers visibility.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The halted truck creates a risk of collision if the driver does not stop promptly."}
{"id": "train_08126", "split": "train", "clip_key": "titan_clip_566_000396_movie", "source": {"subset": "titan", "scenario": "clip_566", "frame": "000396"}, "frames": ["titan_clip_566_000396_movie_t-3.jpg", "titan_clip_566_000396_movie_t-2.jpg", "titan_clip_566_000396_movie_t-1.jpg", "titan_clip_566_000396_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with brick paving and no marked lanes runs between storefronts; it appears as a single shared lane with very light vehicular flow. A pedestrian wearing a cap and shorts walks in the middle of the road toward the ego vehicle, occupying the travel path. Near the front, a man in a white shirt carrying a bag crosses the lane from right to left, passing directly ahead and potentially constraining the pace. Farther ahead, two pedestrians walk away along the roadway near the right side, remaining in the lane. A red do-not-enter sign faces a side street on the left. A parked bicycle stands at the right edge beside a wall, narrowing the usable width.", "hazard_reasoning": "There is a pedestrian wearing a cap and shorts, walking in the middle of the road toward the ego car. Because the pedestrian is walking on the roadway toward the car, the driver should slow down to avoid a collision."}
{"id": "train_08127", "split": "train", "clip_key": "2020-0203-114632_063200_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "063200"}, "frames": ["2020-0203-114632_063200_movie_t-3.jpg", "2020-0203-114632_063200_movie_t-2.jpg", "2020-0203-114632_063200_movie_t-1.jpg", "2020-0203-114632_063200_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction runs straight under a green pedestrian overpass; lanes are divided by dashed lines and a painted buffer, the asphalt is dry, and traffic is light and steady. The ego vehicle proceeds in the leftmost same-direction lane. On the right, an oncoming black minivan approaches in the nearest opposing lane and passes by along the median without encroaching. Farther ahead on the opposing side, a white van followed by a small car travel toward the camera at moderate speed. In the ego's direction, a few distant cars continue straight and leave ample gap, and no obstacles or work zones are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08128", "split": "train", "clip_key": "2020-0227-153144_016430_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "016430"}, "frames": ["2020-0227-153144_016430_movie_t-3.jpg", "2020-0227-153144_016430_movie_t-2.jpg", "2020-0227-153144_016430_movie_t-1.jpg", "2020-0227-153144_016430_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down to maintain a safe following distance", "environment_perception": "An urban divided arterial with two lanes in the ego direction and a shrub median has dry, smooth pavement and moderate, steadily moving traffic. Ahead in the ego lane, a black sedan moves left into the curbside lane in front of the ego car, briefly tightening the following gap. Slightly ahead to the right, a dark van continues straight in the adjacent lane at a similar speed, discouraging a rightward lane change. Farther ahead in the left lane, a small white car proceeds straight and becomes the lead vehicle after the merge. An overhead traffic signal marks an intersection up the road.", "hazard_reasoning": "There is a black sedan lane changing to the left lane in front of the ego car. This unexpected maneuver could reduce your clearance and require sudden braking, so slowing down ensures you maintain a safe buffer distance."}
{"id": "train_08129", "split": "train", "clip_key": "titan_clip_144_000060_movie", "source": {"subset": "titan", "scenario": "clip_144", "frame": "000060"}, "frames": ["titan_clip_144_000060_movie_t-3.jpg", "titan_clip_144_000060_movie_t-2.jpg", "titan_clip_144_000060_movie_t-1.jpg", "titan_clip_144_000060_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban commercial street with two same-direction lanes and no median runs between tall buildings, the pavement smooth and traffic light to moderate at a slow pace. The view advances steadily along the block. A black scooter ahead in the ego lane moves left directly in front of the ego vehicle, changing into the left lane and briefly influencing the ego vehicle's speed. In that left lane, a black SUV just ahead continues slowly, with a van farther ahead in the same lane, and these vehicles collectively set the flow. On the right sidewalk near the curb, a woman with an umbrella walks parallel to traffic without entering the roadway.", "hazard_reasoning": "There is a black scooter lane changing in front of the ego car, from the ego lane to the left lane. The scooter's unexpected lane change into the ego lane increases collision risk and may require sudden braking, so the driver should slow down to maintain safe distance."}
{"id": "train_08130", "split": "train", "clip_key": "titan_clip_92_000546_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_92_000546_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_92_000546_movie_t-3_augB1.jpg", "titan_clip_92_000546_movie_t-2_augB1.jpg", "titan_clip_92_000546_movie_t-1_augB1.jpg", "titan_clip_92_000546_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with one undivided shared lane and block-paved surface runs between buildings, edged by orange cones; traffic is light and moves slowly. A small blue delivery truck travels ahead in the ego lane at low speed, constraining the pace as it proceeds along the center of the street. A cyclist wearing a black jacket and black pants rides in the middle of the road toward the ego vehicle, forming oncoming traffic that may pass close. Two pedestrians on the right walk diagonally into the roadway near the shops, potentially crossing the ego path. Cones and tight clearances create a mildly constrained corridor.", "hazard_reasoning": "There is a cyclist wearing a black jacket and black pants, cycling in the middle of the road, toward the ego car. The driver should slow down to avoid a potential collision with the cyclist who is directly ahead in the travel path."}
{"id": "train_08131", "split": "train", "clip_key": "titan_clip_914_000168_movie", "source": {"subset": "titan", "scenario": "clip_914", "frame": "000168"}, "frames": ["titan_clip_914_000168_movie_t-3.jpg", "titan_clip_914_000168_movie_t-2.jpg", "titan_clip_914_000168_movie_t-1.jpg", "titan_clip_914_000168_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with one lane each direction runs between tall buildings, with smooth pavement, no median, and very light traffic. Ahead on the right, two pedestrians, including a man in a white shirt carrying a black bag, walk away along the edge close to the ego lane and may step into it. Near the center ahead, an oncoming cyclist approaches in the opposite lane, continuing straight and constraining available space. On the left foreground, an open garage entrance and driveway sit beside the travel lane.", "hazard_reasoning": "There is a man wearing a white shirt, carrying a black bag, walking on the right side of the road, away from the ego car. He is close to the traffic lane and could re-enter the roadway unexpectedly, so the driver should manoeuvre carefully around him."}
{"id": "train_08132", "split": "train", "clip_key": "2020-0213-143552_016417_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "016417"}, "frames": ["2020-0213-143552_016417_movie_t-3.jpg", "2020-0213-143552_016417_movie_t-2.jpg", "2020-0213-143552_016417_movie_t-1.jpg", "2020-0213-143552_016417_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement runs between tall buildings, and traffic is moderate but compresses near a pedestrian overpass ahead. In the ego lane, a white hatchback directly ahead slows as a queue forms under the bridge, effectively setting the ego vehicle's pace. To the right, a black van travels alongside at close range and edges forward in the adjacent lane, limiting room to merge. In the lane to the left, a dark sedan ahead also brakes with the same queue, keeping gaps short. No unusual hazards are visible.", "hazard_reasoning": "There is a white hatchback slowing down in the ego lane, because of traffic congestion ahead. The white hatchback's reduced speed indicates traffic buildup, so the driver should slow down to maintain a safe following distance."}
{"id": "train_08133", "split": "train", "clip_key": "titan_clip_407_000432_movie", "source": {"subset": "titan", "scenario": "clip_407", "frame": "000432"}, "frames": ["titan_clip_407_000432_movie_t-3.jpg", "titan_clip_407_000432_movie_t-2.jpg", "titan_clip_407_000432_movie_t-1.jpg", "titan_clip_407_000432_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the stopped truck", "environment_perception": "A narrow urban commercial street with stone-paved surface and no median, effectively a single lane, carries light traffic as the ego vehicle rolls slowly forward; no opposing vehicles appear. On the right, a white delivery truck is stopped for unloading and a worker moves carts and boxes at its open rear, partly occupying the lane and constraining the ego's pace. Farther ahead on the right, another white box truck also stands with its rear open, creating a chicane that leaves only a slim passage down the center. On the left, a pedestrian near the curb walks along the storefronts and glances toward the road, close to the ego path as it passes.", "hazard_reasoning": "There is a white truck stopped on the right side of the road, because it is being unloaded. The stopped truck partially obstructs the lane, so the driver should manoeuvre carefully around it to maintain a safe path."}
{"id": "train_08134", "split": "train", "clip_key": "titan_clip_358_000204_movie", "source": {"subset": "titan", "scenario": "clip_358", "frame": "000204"}, "frames": ["titan_clip_358_000204_movie_t-3.jpg", "titan_clip_358_000204_movie_t-2.jpg", "titan_clip_358_000204_movie_t-1.jpg", "titan_clip_358_000204_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with stone paving approaches a small Y-junction, with no median and minimal lane markings, and traffic is light. A cyclist wearing a white shirt is in the middle of the road ahead, riding from left to right across the lane toward the far curb, occupying the ego path. A pedestrian farther ahead in the center walks diagonally rightward, also crossing in front of the vehicle. Several pedestrians stand along the right-side storefront near the curb at the junction. A white van is stopped at the right curb by the corner, slightly narrowing the approach. A traffic signal visible farther down the continuation street shows red at the next intersection.", "hazard_reasoning": "A cyclist wearing a white shirt is in the middle of the road, crossing to the right side. The cyclist's unexpected crossing requires the driver to reduce speed to maintain safety and avoid a potential collision."}
{"id": "train_08135", "split": "train", "clip_key": "titan_clip_1036_000438_movie", "source": {"subset": "titan", "scenario": "clip_1036", "frame": "000438"}, "frames": ["titan_clip_1036_000438_movie_t-3.jpg", "titan_clip_1036_000438_movie_t-2.jpg", "titan_clip_1036_000438_movie_t-1.jpg", "titan_clip_1036_000438_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist approaching on right", "environment_perception": "A dense urban street with midrise offices runs as a narrow two-way road without a median, the pavement smooth but the left curb is lined with construction barriers that narrow the lane; traffic is light. A black car ahead in the ego lane moves slowly away, setting the pace. A cyclist in a blue T-shirt and sunglasses rides toward the ego along the right side of the roadway, approaching the ego's path and potentially entering the lane. Several pedestrians walk on both sidewalks near the work zone and the intersection, with a few pausing at the right curb.", "hazard_reasoning": "A cyclist wearing a blue t-shirt and sunglasses cycles on the right side of the road, towards the ego car. Drivers should be aware of the cyclist as they approach, since they may enter your lane unexpectedly."}
{"id": "train_08136", "split": "train", "clip_key": "titan_clip_563_000570_movie", "source": {"subset": "titan", "scenario": "clip_563", "frame": "000570"}, "frames": ["titan_clip_563_000570_movie_t-3.jpg", "titan_clip_563_000570_movie_t-2.jpg", "titan_clip_563_000570_movie_t-1.jpg", "titan_clip_563_000570_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban side street with no divider and patched asphalt winds gently right, and traffic is light and slow. A small white truck ahead in the same direction creeps near the right edge and may be stopping by storefronts, constraining the ego vehicle's pace. On the left side, a pedestrian in a white shirt carrying a handbag walks toward the ego car along the roadway margin and could edge into the lane. Two more pedestrians linger at the left curb beside a parked SUV, standing close to the travel path and narrowing clearance. Additional obstacles include the parked SUV and a row of restaurant boards and planters projecting from the right, further squeezing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and walking on the left side of the road towards the ego-car. Because the parked truck creates a blind spot and the pedestrian is approaching the vehicle path, the driver should manoeuvre carefully around the pedestrian to prevent a collision."}
{"id": "train_08137", "split": "train", "clip_key": "2020-0205-152530_048850_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "048850"}, "frames": ["2020-0205-152530_048850_movie_t-3.jpg", "2020-0205-152530_048850_movie_t-2.jpg", "2020-0205-152530_048850_movie_t-1.jpg", "2020-0205-152530_048850_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth red-colored pavement runs straight, with three same-direction lanes and a planted median on the right separating oncoming traffic; traffic is moderate and flows steadily. A white box truck directly ahead in the ego lane drives away at a steady pace, effectively setting the ego vehicle's speed. In the right lane slightly ahead, a dark sedan continues straight, staying parallel and clear of the ego path. In the left lane ahead, a black minivan proceeds toward the junction at similar speed without encroaching. Overhead traffic signals and directional signs are visible at the upcoming intersection, and buildings with sidewalks line both sides; no obstacles or work zones are present.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08138", "split": "train", "clip_key": "2020-0225-102455_075108_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "075108"}, "frames": ["2020-0225-102455_075108_movie_t-3.jpg", "2020-0225-102455_075108_movie_t-2.jpg", "2020-0225-102455_075108_movie_t-1.jpg", "2020-0225-102455_075108_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy traffic that bunches at an intersection where the signal ahead shows red. A white van directly ahead in the ego lane is stopped for the red light and blocks the ego vehicle's path. In the right adjacent lane, a red flatbed truck slows to a stop slightly ahead, queuing for the same light and limiting right-side visibility. On the left, a white box truck pulls up alongside at low speed, narrowing space and hindering a lane change. A black taxi and other cars queue further right as traffic remains stationary.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop at the red light to avoid a collision with the stopped vehicle ahead and comply with traffic signals."}
{"id": "train_08139", "split": "train", "clip_key": "titan_clip_1374_000156_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1374_000156_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1374_000156_movie_t-3_augB1.jpg", "titan_clip_1374_000156_movie_t-2_augB1.jpg", "titan_clip_1374_000156_movie_t-1_augB1.jpg", "titan_clip_1374_000156_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian crossing ahead", "environment_perception": "A narrow urban commercial street with smooth pavement runs between buildings, lacking a marked centerline and showing very light vehicular traffic. A pedestrian wearing a white shirt, black pants, and a backpack steps from the right curb and crosses in front of the ego car from right to left, entering the ego path. Farther ahead, scattered pedestrians walk along both sidewalks and some move near the lane edge, including a small group by the left curb and others near mid-road. Orange cones on the left verge and restaurant signboards on the right line the curb without encroaching into the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a backpack, crossing the street in front of the ego car, from the right side to the left side. The driver should yield to allow the pedestrian to cross safely."}
{"id": "train_08140", "split": "train", "clip_key": "2020-0205-152530_009056_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "009056"}, "frames": ["2020-0205-152530_009056_movie_t-3.jpg", "2020-0205-152530_009056_movie_t-2.jpg", "2020-0205-152530_009056_movie_t-1.jpg", "2020-0205-152530_009056_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial approaches a signalized intersection with straight and right-turn lanes, smooth pavement, and heavy traffic queued to a stop. Directly ahead in the ego lane, a black sedan is stopped for the red light, constraining the ego vehicle's pace. To the right, a black van in the right-turn lane waits at the line and remains out of the ego lane. On the left, a silver hatchback holds position alongside in the adjacent lane. Bright low sun ahead creates noticeable glare.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid rear-ending the halted vehicle at the red signal."}
{"id": "train_08141", "split": "train", "clip_key": "2020-0220-102630_019200_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "019200"}, "frames": ["2020-0220-102630_019200_movie_t-3.jpg", "2020-0220-102630_019200_movie_t-2.jpg", "2020-0220-102630_019200_movie_t-1.jpg", "2020-0220-102630_019200_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid rear-end collision.", "environment_perception": "An urban arterial with two same-direction lanes and dry pavement runs between mid-rise buildings, and traffic is heavy, settling into stop-and-go flow. A white sedan directly ahead in the ego lane slows to a stop because of congestion ahead, forcing the ego vehicle to decelerate. In the adjacent right lane, a black kei van edges forward alongside and then halts, limiting space for a merge. Farther ahead, a tall box truck in the right lane fronts the queue and blocks forward visibility, contributing to the slowdown.", "hazard_reasoning": "There is a white sedan slowing to a stop in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop immediately to maintain a safe following distance and avoid a collision."}
{"id": "train_08142", "split": "train", "clip_key": "2020-0220-102630_109716_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "109716"}, "frames": ["2020-0220-102630_109716_movie_t-3.jpg", "2020-0220-102630_109716_movie_t-2.jpg", "2020-0220-102630_109716_movie_t-1.jpg", "2020-0220-102630_109716_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with multiple same-direction lanes and a narrow concrete median approaches a signalized intersection; the pavement looks smooth and traffic is moderate. A gray box truck directly ahead in the ego lane slows and begins a left turn at the intersection, constraining the ego car's pace. In the adjacent lane to the right, a red minivan continues straight and gradually overtakes while staying in its lane. Farther right, a silver kei van also proceeds straight past the junction and passes the slowing truck. Overhead traffic lights are visible at the intersection.", "hazard_reasoning": "There is a gray truck slowing in front of the ego-car, because it is making a left hand turn at the intersection. The ego-vehicle should slow down to avoid a collision due to the truck's deceleration for its turning maneuver."}
{"id": "train_08143", "split": "train", "clip_key": "2020-0127-132751_033171_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "033171"}, "frames": ["2020-0127-132751_033171_movie_t-3.jpg", "2020-0127-132751_033171_movie_t-2.jpg", "2020-0127-132751_033171_movie_t-1.jpg", "2020-0127-132751_033171_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the same direction runs between mid-rise buildings, with a hedge-lined curb on the right; the pavement is dry and traffic is heavy, forming a slow queue. A black hatchback is stopped directly ahead in the ego lane because congestion blocks the way, holding the ego vehicle. In the adjacent left lane, a white van slightly ahead also creeps with the queue, offering no faster path. On the far left near the camera, a large white truck sits at the curb, appearing stationary and not entering the lane. No salient signals or signs govern this short scene.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the stationary hatchback in congested traffic."}
{"id": "train_08144", "split": "train", "clip_key": "2020-0206-101736_056333_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "056333"}, "frames": ["2020-0206-101736_056333_movie_t-3.jpg", "2020-0206-101736_056333_movie_t-2.jpg", "2020-0206-101736_056333_movie_t-1.jpg", "2020-0206-101736_056333_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with two same-direction lanes curves gently right beside an elevated structure, the asphalt clean while traffic moves slowly in heavy congestion. A white hatchback directly ahead in the ego lane slows and creeps because congestion builds in front, controlling our pace. In the adjacent left lane, a large flatbed truck running alongside decelerates with the queue, staying close and reducing room to merge. Farther ahead in the left lane, several vans bunch up and brake in stop-and-go motion, extending the jam. A metal guardrail on the right separates a parallel roadway.", "hazard_reasoning": "There is a white hatchback slowing down in the ego lane because of traffic congestion ahead. The hatchback's reduced speed indicates approaching congestion, increasing the risk of a rear-end collision, so the driver should slow down to maintain a safe following distance."}
{"id": "train_08145", "split": "train", "clip_key": "2020-0226-140503_054115_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "054115"}, "frames": ["2020-0226-140503_054115_movie_t-3.jpg", "2020-0226-140503_054115_movie_t-2.jpg", "2020-0226-140503_054115_movie_t-1.jpg", "2020-0226-140503_054115_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane approach to a signalized intersection appears with smooth reddish pavement and no median, and traffic is light but queued at the light. The white van directly ahead in the ego lane is stopped because the overhead signal is red, holding the ego vehicle. A black taxi in the adjacent right lane is also stopped slightly ahead at the line, remaining parallel to the ego vehicle. On the left shoulder near the curb, a red delivery scooter waits just ahead by the fence and may merge into the lane when traffic moves. Several pedestrians stand on the sidewalks by the crosswalks, waiting to cross. The traffic signal above the intersection shows a red aspect.", "hazard_reasoning": "There is a white van stopped in the ego lane because of the red light ahead at the intersection. The stopped vehicle indicates a red light, so the driver must stop to maintain a safe distance and obey traffic signals."}
{"id": "train_08146", "split": "train", "clip_key": "2020-0205-103411_039711_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "039711"}, "frames": ["2020-0205-103411_039711_movie_t-3.jpg", "2020-0205-103411_039711_movie_t-2.jpg", "2020-0205-103411_039711_movie_t-1.jpg", "2020-0205-103411_039711_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with a metal railing median and dry pavement shows moderate traffic forming a queue at an intersection under a red signal. Directly ahead in the ego lane, a black hatchback is stopped for the red light, with a white van farther ahead also waiting, holding the ego vehicle in place. In the adjacent lane to the left, a dark wagon edges forward and comes to a stop beside the ego car as the queue builds. On the right-side crosswalk at the junction, several pedestrians walk across while traffic remains halted.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car in the ego lane, because the light is red. The driver should stop because the red signal requires halting to avoid a collision with the stopped vehicle."}
{"id": "train_08147", "split": "train", "clip_key": "titan_clip_748_000396_movie", "source": {"subset": "titan", "scenario": "clip_748", "frame": "000396"}, "frames": ["titan_clip_748_000396_movie_t-3.jpg", "titan_clip_748_000396_movie_t-2.jpg", "titan_clip_748_000396_movie_t-1.jpg", "titan_clip_748_000396_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban, narrow two-way street with no median and dry pavement unfolds between close-set buildings, and overall traffic is light and slow due to roadside construction. Farther ahead at the left curb, a work truck is stopped with an elevated boom and cones, partially narrowing the travel space and constraining the ego vehicle's pace. Along the right edge near the ego path, several pedestrians walk along the roadway; among them, a man in a white T-shirt and black pants walks toward the ego car and is close enough to the lane that he may enter it. Near the centerline ahead, a bicyclist approaches the ego vehicle, reducing clearance. Another cyclist farther ahead proceeds away along the right side beyond the truck.", "hazard_reasoning": "There is a man wearing a white t-shirt and black pants and walking on the right side of the road, toward the ego car. The driver should manoeuvre carefully around the pedestrian to prevent a collision as he approaches the vehicle's path."}
{"id": "train_08148", "split": "train", "clip_key": "2020-0129-105040_026220_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "026220"}, "frames": ["2020-0129-105040_026220_movie_t-3.jpg", "2020-0129-105040_026220_movie_t-2.jpg", "2020-0129-105040_026220_movie_t-1.jpg", "2020-0129-105040_026220_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the motorcycle merging ahead", "environment_perception": "An urban multi-lane arterial under an elevated structure has dry, well?arked pavement and traffic queues at a signalized intersection with slow flow. A yellow taxi directly ahead in the ego lane waits at the light, constraining the ego vehicle's pace. A black motorcycle from the left edge cuts into the ego car's lane just ahead, merging into the gap at low speed. A pedestrian farther ahead to the right crosses the roadway at the intersection between stationary vehicles. The traffic signal ahead shows red.", "hazard_reasoning": "There is a black motorcycle cutting into the ego car lane in front of the ego car. The motorcycle's sudden lane intrusion could force abrupt steering or braking and increase collision risk, so the driver should be aware of its movement."}
{"id": "train_08149", "split": "train", "clip_key": "2020-0129-144857_053732_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "053732"}, "frames": ["2020-0129-144857_053732_movie_t-3.jpg", "2020-0129-144857_053732_movie_t-2.jpg", "2020-0129-144857_053732_movie_t-1.jpg", "2020-0129-144857_053732_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with two lanes in the ego direction runs on dry, well?arked asphalt, with a metal barrier on the right dividing oncoming traffic; overall flow is heavy and slow. A gray sedan directly ahead in the ego lane slows because of congestion ahead, closing the gap to vehicles in front. Farther ahead in the same lane a white box truck creeps forward and effectively sets the pace for the sedan and the ego car. In the adjacent left lane a smaller white truck travels slightly ahead at a similar low speed, limiting passing options. Across the barrier, opposing traffic includes a large red truck. An overhead sign shows a 50 speed limit.", "hazard_reasoning": "There is a gray sedan slowing in the ego-car lane, because of traffic congestion ahead. The gray sedan's reduced speed indicates developing congestion ahead, so you should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_08150", "split": "train", "clip_key": "2020-0212-102546_082820_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "082820"}, "frames": ["2020-0212-102546_082820_movie_t-3.jpg", "2020-0212-102546_082820_movie_t-2.jpg", "2020-0212-102546_082820_movie_t-1.jpg", "2020-0212-102546_082820_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with a painted buffer separating opposing lanes has smooth dry pavement; traffic in the ego lane is stopped while oncoming flow is light. A white minivan sits directly ahead in the ego lane and remains stopped because of congestion ahead, holding the ego car in place. To the right, an oncoming white minivan approaches in its lane and passes without slowing, with additional oncoming cars following steadily. A roadside sign on the left states that bicycles are prohibited, and the roadway is lined by guardrails and noise barriers.", "hazard_reasoning": "There is a white minivan stopped in front of the ego car because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary vehicle ahead."}
{"id": "train_08151", "split": "train", "clip_key": "2020-0210-155354_040169_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "040169"}, "frames": ["2020-0210-155354_040169_movie_t-3.jpg", "2020-0210-155354_040169_movie_t-2.jpg", "2020-0210-155354_040169_movie_t-1.jpg", "2020-0210-155354_040169_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban multi-lane road with good pavement and a wide hatched median runs straight between midrise buildings, and traffic is light. A gray van directly ahead in the ego lane slows, constraining the ego car's pace. A flatbed truck slightly ahead to the left proceeds slowly in the adjacent lane near the curb, remaining parallel without encroaching on the ego lane. The right side shows an open hatched buffer and empty lane space with no vehicles merging, and the view toward a distant junction is unobstructed.", "hazard_reasoning": "There is a gray van slowing down in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a rear-end collision under this situation."}
{"id": "train_08152", "split": "train", "clip_key": "2020-0214-102601_048760_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "048760"}, "frames": ["2020-0214-102601_048760_movie_t-3.jpg", "2020-0214-102601_048760_movie_t-2.jpg", "2020-0214-102601_048760_movie_t-1.jpg", "2020-0214-102601_048760_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the van's movement", "environment_perception": "An urban scene under an elevated viaduct shows a two-way road with multiple lanes, concrete side barriers, a solid center line, smooth pavement, and light traffic as the route curves gently right. A white van beside the ego-car in the left lane slightly left of center moves steadily forward, setting the immediate headway. Farther ahead in the same direction, a small truck continues under the structure and", "hazard_reasoning": "There's a white van moving forward beside the ego-car, in the left-hard lane. The adjacent van may shift lanes unexpectedly and cut in front of you, so you should be aware of its movement."}
{"id": "train_08153", "split": "train", "clip_key": "titan_clip_425_000030_movie", "source": {"subset": "titan", "scenario": "clip_425", "frame": "000030"}, "frames": ["titan_clip_425_000030_movie_t-3.jpg", "titan_clip_425_000030_movie_t-2.jpg", "titan_clip_425_000030_movie_t-1.jpg", "titan_clip_425_000030_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van ahead", "environment_perception": "An urban residential street with smooth pavement and a single narrow lane is bordered by sidewalks and no median, and traffic is light with no oncoming vehicles visible. A white van ahead is parked along the left edge within the ego lane, narrowing the usable lane. A pedestrian on the right sidewalk walks away from the camera, staying on the walkway. A marked pedestrian crosswalk is visible ahead at an intersection.", "hazard_reasoning": "There is a white van parked to the left of the road in the ego lane. The parked van obstructs the driver's path and could require slowing or lane adjustment, so the driver should be aware."}
{"id": "train_08154", "split": "train", "clip_key": "titan_clip_1060_000258_movie", "source": {"subset": "titan", "scenario": "clip_1060", "frame": "000258"}, "frames": ["titan_clip_1060_000258_movie_t-3.jpg", "titan_clip_1060_000258_movie_t-2.jpg", "titan_clip_1060_000258_movie_t-1.jpg", "titan_clip_1060_000258_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around cyclist carefully", "environment_perception": "A narrow urban shopping street with a single undivided lane runs between close storefronts; the pavement is worn but intact and traffic is light. Ahead in the same lane, a cyclist in a yellow shirt and cap rides along the left edge away from the ego car since there is no dedicated cycle lane, likely setting the pace. Farther ahead near the centerline, a second cyclist continues in the same direction at low speed within the ego vehicle's path. At the near right edge, a pedestrian stands by a storefront at the curb, close to the lane and potentially stepping out. Parked bicycles along the left curb and freestanding shop boards further narrow the usable roadway.", "hazard_reasoning": "There is a cyclist wearing a yellow shirt and a cap, traveling along the left side of the lane away from the ego car, because there is no cycling lane. The cyclist occupies the main lane, requiring the driver to carefully manoeuvre around them to maintain safe clearance."}
{"id": "train_08155", "split": "train", "clip_key": "2020-0206-101736_043829_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "043829"}, "frames": ["2020-0206-101736_043829_movie_t-3.jpg", "2020-0206-101736_043829_movie_t-2.jpg", "2020-0206-101736_043829_movie_t-1.jpg", "2020-0206-101736_043829_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to maintain safe distance.", "environment_perception": "An urban multi-lane arterial with smooth pavement runs beneath a pedestrian overpass, and traffic is heavy and mostly stopped; red bollards separate a narrow side lane along the right edge. Ahead, a white hatchback is stopped in the ego lane because congestion blocks the queue, holding the ego vehicle. Ahead left, a tall box truck in the adjacent same-direction lane waits and inches forward, partly obscuring the view ahead. To the right, a white van in the neighboring lane creeps forward parallel to the ego, moving slightly faster and narrowing lateral clearance. A small pickup sits in the segregated side lane behind the bollards and additional trucks line the left side, but none enter the ego lane.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a potential rear-end collision."}
{"id": "train_08156", "split": "train", "clip_key": "2020-0131-135401_013258_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "013258"}, "frames": ["2020-0131-135401_013258_movie_t-3.jpg", "2020-0131-135401_013258_movie_t-2.jpg", "2020-0131-135401_013258_movie_t-1.jpg", "2020-0131-135401_013258_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane in each direction and a painted centerline shows smooth pavement and light traffic as the ego vehicle proceeds in the left lane. An oncoming silver van approaches in the opposing lane to the right and continues straight past while staying within its lane. A white car far ahead in the ego lane travels straight in the same direction, maintaining distance. Pedestrians on both sidewalks move along, including one near the right-side fence and another by a storefront on the left beside a parked scooter, and they remain off the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08157", "split": "train", "clip_key": "2020-0210-101957_029199_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "029199"}, "frames": ["2020-0210-101957_029199_movie_t-3.jpg", "2020-0210-101957_029199_movie_t-2.jpg", "2020-0210-101957_029199_movie_t-1.jpg", "2020-0210-101957_029199_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial passes under an elevated roadway; the pavement is dry and in good condition, and traffic is moderate and slowing toward a signalized junction. A black van directly ahead in the ego lane is stopped for a red light, constraining the ego vehicle's pace. A flatbed truck slightly ahead in the lane to the left also waits at the light and holds its lane. A small black car in the adjacent right lane approaches the intersection and decelerates. A large dump truck stands near the left curb beside the ego vehicle, reducing lateral space. An overhead traffic signal facing the approach shows red.", "hazard_reasoning": "There is a black van stopped in the ego lane, because there is a red traffic light, in front of the ego car. The stopped van indicates the red signal, requiring the driver to stop to avoid a collision and comply with traffic rules."}
{"id": "train_08158", "split": "train", "clip_key": "2020-0228-102841_021631_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "021631"}, "frames": ["2020-0228-102841_021631_movie_t-3.jpg", "2020-0228-102841_021631_movie_t-2.jpg", "2020-0228-102841_021631_movie_t-1.jpg", "2020-0228-102841_021631_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the cutting sedan", "environment_perception": "An urban multi-lane arterial with smooth pavement and no median is seen, with light same-direction traffic and a rightmost lane that tapers and merges left ahead. The flow is generally light and steady as the scene approaches a wide signalized intersection. Ahead-left, a white sedan moves right across the dashed line and cuts into the ego lane, becoming directly in front and likely to affect the ego vehicle's pace. Farther ahead in the left lanes, two box trucks proceed slowly toward the intersection, creating a small queue that the sedan appears to avoid. A small car farther ahead in the ego lane continues straight at a steady speed with ample gap.", "hazard_reasoning": "There is a white sedan in the left lane, cutting in to the ego lane. Its sudden merge into the ego lane may lead to a conflict if the driver does not anticipate its movement, so the driver should be cautious."}
{"id": "train_08159", "split": "train", "clip_key": "2020-0228-150133_036575_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "036575"}, "frames": ["2020-0228-150133_036575_movie_t-3.jpg", "2020-0228-150133_036575_movie_t-2.jpg", "2020-0228-150133_036575_movie_t-1.jpg", "2020-0228-150133_036575_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to merging white SUV", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and no median has smooth pavement and moderate, steady traffic. A dark sedan directly ahead in the ego lane continues straight and sets the pace. To the right, the kerbside lane is obstructed by a stopped white van and a large bus near the fence, so a white SUV in that right lane slows and merges into the ego lane to avoid the blockage. Farther left, another light-colored car proceeds ahead without affecting the ego vehicle. Signal masts are visible over the intersection ahead, but the flow remains continuous.", "hazard_reasoning": "There is a white SUV that is slowing down in the right lane, and that is moving from the right lane into the ego lane because of an object blocking their lane. The SUV's merging maneuver requires the driver to yield to avoid a potential side collision."}
{"id": "train_08160", "split": "train", "clip_key": "2020-0213-143552_032353_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "032353"}, "frames": ["2020-0213-143552_032353_movie_t-3.jpg", "2020-0213-143552_032353_movie_t-2.jpg", "2020-0213-143552_032353_movie_t-1.jpg", "2020-0213-143552_032353_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban two-way street with one lane each direction and no median shows smooth pavement and light traffic as the ego vehicle proceeds in the left lane toward a zebra crossing. Ahead in the same lane, a small delivery truck is stopped near the center of the road, and two people stand together beside it in the roadway, constraining the ego vehicle's path. At the near left curb, a pedestrian stands by a parked white car and remains stationary off the lane. A pedestrian crossing sign on the left highlights the crosswalk, while parked vehicles along both curbs narrow the usable roadway.", "hazard_reasoning": "There are two people standing together in the middle of the road, because they are standing beside a parked truck. These pedestrians are partially hidden by the parked truck and may step into the lane unexpectedly, so the driver should carefully manoeuvre around the parked truck to avoid a collision."}
{"id": "train_08161", "split": "train", "clip_key": "titan_clip_1348_000432_movie", "source": {"subset": "titan", "scenario": "clip_1348", "frame": "000432"}, "frames": ["titan_clip_1348_000432_movie_t-3.jpg", "titan_clip_1348_000432_movie_t-2.jpg", "titan_clip_1348_000432_movie_t-1.jpg", "titan_clip_1348_000432_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street climbs uphill with a narrow, textured pavement and no divider; a side street with a zebra crossing joins from the left, and there is no vehicular traffic. Ahead on the left, a pedestrian in blue pants carrying a backpack walks away uphill along the left edge of the roadway, occupying the ego path and likely setting the pace. Slightly farther ahead near the center-right, another pedestrian in a red top walks uphill along the right side, keeping to the edge and not entering the lane. On the far right by the railing, a man near the curb begins walking along the sidewalk, with minimal interaction with the roadway. No signals or posted limits are prominent.", "hazard_reasoning": "There is a pedestrian wearing blue pants and carrying a backpack walking away from the ego car on the left side of the road. The driver should slow down because the pedestrian could change direction and step into the vehicle's path."}
{"id": "train_08162", "split": "train", "clip_key": "titan_clip_43_000318_movie", "source": {"subset": "titan", "scenario": "clip_43", "frame": "000318"}, "frames": ["titan_clip_43_000318_movie_t-3.jpg", "titan_clip_43_000318_movie_t-2.jpg", "titan_clip_43_000318_movie_t-1.jpg", "titan_clip_43_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with block-paved surface has no median and carries light, slow-moving traffic as the ego vehicle proceeds straight. Parked cars line both sides, narrowing the single carriageway. Ahead on the left, a gray sedan noses out from a curb space and begins merging into the travel lane, partially blocking the ego path. On the right edge, a pedestrian in a white shirt carrying a handbag walks away from the ego vehicle along the roadside, close to the traffic lane. Two more pedestrians stand at the right curb near storefronts, lingering by the edge but not entering the roadway. A convex mirror and dense shop signage line the street.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and walking on the right side of the road, away from the ego car. The driver should slow down to anticipate any sudden entry of the pedestrian into the traffic lane."}
{"id": "train_08163", "split": "train", "clip_key": "2020-0218-151547_028551_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "028551"}, "frames": ["2020-0218-151547_028551_movie_t-3.jpg", "2020-0218-151547_028551_movie_t-2.jpg", "2020-0218-151547_028551_movie_t-1.jpg", "2020-0218-151547_028551_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around parked hatchback", "environment_perception": "An urban two-lane one-way street runs under an elevated structure, with a curbside sidewalk on the left and a guardrail on the right; the pavement is dry and smooth, and traffic is light to moderate. Ahead in the ego lane, a white hatchback is stopped with its hazard lights flashing, partially blocking the lane. Just before it, a cyclist rides ahead near the lane line and continues forward past the stopped car, keeping close to the ego vehicle's path and slowing its progress. In the adjacent right lane, a small red van travels forward alongside and slightly ahead, limiting an immediate merge around the obstruction. No signals or unusual signs are prominent, and no oncoming traffic is visible.", "hazard_reasoning": "There is a white hatchback parked with hazard lights on, in the ego lane. The driver should manoeuvre carefully around the parked vehicle to avoid a collision and maintain safe travel."}
{"id": "train_08164", "split": "train", "clip_key": "titan_clip_222_000054_movie", "source": {"subset": "titan", "scenario": "clip_222", "frame": "000054"}, "frames": ["titan_clip_222_000054_movie_t-3.jpg", "titan_clip_222_000054_movie_t-2.jpg", "titan_clip_222_000054_movie_t-1.jpg", "titan_clip_222_000054_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the white semi-truck crossing.", "environment_perception": "An urban two-way street with one lane in each direction approaches an intersection; the pavement looks smooth and traffic is light. A white semi-truck with green tarpaulin covering crosses from the left to the right directly ahead through the intersection, temporarily blocking the ego lane. A pedestrian slightly farther ahead steps onto the crosswalk from the left and walks rightward across the ego path. On the right sidewalk near a restaurant, three pedestrians stand by the curb and remain on the sidewalk.", "hazard_reasoning": "there is a white semi-truck with green covering, crossing the street from the left side to the right side. The semi-truck may cut into your path at the intersection, so you should yield to avoid a collision and ensure safe passage."}
{"id": "train_08165", "split": "train", "clip_key": "2020-0203-154554_039835_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "039835"}, "frames": ["2020-0203-154554_039835_movie_t-3.jpg", "2020-0203-154554_039835_movie_t-2.jpg", "2020-0203-154554_039835_movie_t-1.jpg", "2020-0203-154554_039835_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with three same-direction lanes and a guardrail on the right; the pavement looks smooth and traffic moves at a steady, moderate pace. Directly ahead in the ego lane a white box truck drives away from the ego car, matching the flow and setting the pace. Slightly ahead to the right, a small flatbed truck continues in the right lane under the viaduct, traveling parallel without merging. Farther ahead in the left lane a passenger car proceeds with traffic. A white van is stopped near the left curb close to the camera, outside the travel lane. No salient signals or unusual signs are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08166", "split": "train", "clip_key": "titan_clip_1059_000072_movie", "source": {"subset": "titan", "scenario": "clip_1059", "frame": "000072"}, "frames": ["titan_clip_1059_000072_movie_t-3.jpg", "titan_clip_1059_000072_movie_t-2.jpg", "titan_clip_1059_000072_movie_t-1.jpg", "titan_clip_1059_000072_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "manoeuvre around the parked truck", "environment_perception": "An urban shopping street appears with a narrow two-way carriageway, no median, and smooth pavement; traffic is light and no oncoming vehicles are visible. On the left close to the camera, a white truck is parked partly in the roadway, narrowing the lane as noted in the caption. Ahead in the same direction, a small green truck moves slowly toward a gentle left bend, setting the pace for the ego vehicle. Slightly right of center ahead, a man walks along the roadway away from the camera near the green truck, occupying part of the lane and reducing clearance. Shopfronts line both sides and several A-frame signs stand at the right edge, encroaching toward the roadway.", "hazard_reasoning": "There is a white truck parked on the left side of the road. This parked truck partially blocks the roadway and sightlines; the driver should manoeuvre around it to avoid collision."}
{"id": "train_08167", "split": "train", "clip_key": "2020-0214-145407_032436_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "032436"}, "frames": ["2020-0214-145407_032436_movie_t-3.jpg", "2020-0214-145407_032436_movie_t-2.jpg", "2020-0214-145407_032436_movie_t-1.jpg", "2020-0214-145407_032436_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to pedestrians crossing", "environment_perception": "An urban arterial under an elevated expressway has two lanes in our direction, with a fenced median separating oncoming traffic; the pavement is dry and traffic is moderate, slowing near a signalized intersection. A black sedan directly ahead in the ego lane is stopped at the crosswalk as pedestrians are crossing, holding our pace. To the left, a small white car continues slowly toward the junction in the adjacent lane, keeping clear of the crosswalk. On the left side of the intersection, several pedestrians step off the curb and traverse the crosswalk toward the right, which blocks the near lane. A guardrail borders the right curb beside bridge columns.", "hazard_reasoning": "There is a black sedan stopped in front of the ego-car, in the ego lane, because of the pedestrians crossing ahead at the intersection. Yielding ensures you give right-of-way to pedestrians and avoid a rear-end collision."}
{"id": "train_08168", "split": "train", "clip_key": "2020-0210-101957_073587_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "073587"}, "frames": ["2020-0210-101957_073587_movie_t-3.jpg", "2020-0210-101957_073587_movie_t-2.jpg", "2020-0210-101957_073587_movie_t-1.jpg", "2020-0210-101957_073587_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential two-way street with one narrow lane each way and no median is shown; the pavement is smooth with a red-painted strip, and traffic is light. A white van ahead in the ego lane moves slowly, briefly decelerating and constraining the ego vehicle's pace. On the right, an oncoming white minivan approaches in its lane and passes by without deviating, leaving limited clearance near the centerline. No notable signals or speed signs are visible, and there are no pedestrians or obstacles.", "hazard_reasoning": "There is a white van slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The driver should slow down to maintain a safe following distance as the van decelerates."}
{"id": "train_08169", "split": "train", "clip_key": "2020-0131-135401_063073_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "063073"}, "frames": ["2020-0131-135401_063073_movie_t-3.jpg", "2020-0131-135401_063073_movie_t-2.jpg", "2020-0131-135401_063073_movie_t-1.jpg", "2020-0131-135401_063073_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with two lanes in each direction and no physical median stretches ahead, the pavement smooth and traffic flow moderate. A white kei van ahead in the ego lane drives away from the ego vehicle, holding a steady course and effectively setting the pace. To its right, a dump truck in the adjacent same-direction lane continues straight alongside, limiting room to merge right. In the opposing lanes to the right, oncoming cars pass steadily with clear separation.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08170", "split": "train", "clip_key": "2020-0226-101332_011966_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "011966"}, "frames": ["2020-0226-101332_011966_movie_t-3.jpg", "2020-0226-101332_011966_movie_t-2.jpg", "2020-0226-101332_011966_movie_t-1.jpg", "2020-0226-101332_011966_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane two-way street with a painted center line approaches a small intersection beneath a pedestrian overpass; the pavement is patched and traffic is light. At the intersection ahead, a black van turns in from the left and enters the ego lane, moving ahead in the same direction and briefly dictating the pace. A cyclist on the right near the corner rides slowly toward the crosswalk along the curb without entering the lane. Pedestrians on both sidewalks walk near the railings by the crosswalk but stay off the roadway. A round 30 speed limit sign stands on the left.", "hazard_reasoning": "There is a black van turning from the left side of the intersection into the ego lane. The unexpected merge into your lane could cause a collision if you maintain speed, so you should slow down to yield and maintain safety."}
{"id": "train_08171", "split": "train", "clip_key": "2020-0205-152530_043857_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "043857"}, "frames": ["2020-0205-152530_043857_movie_t-3.jpg", "2020-0205-152530_043857_movie_t-2.jpg", "2020-0205-152530_043857_movie_t-1.jpg", "2020-0205-152530_043857_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three same-direction lanes runs between tall buildings; pavement is smooth and traffic flows at a steady moderate pace. A small white box truck is directly ahead in the ego lane driving away from the camera at a constant speed, effectively setting the ego vehicle's pace. A dark sedan in the adjacent right lane glides forward and overtakes slightly while continuing straight without merging. Farther ahead in the left lane, a gray car proceeds steadily in its lane and does not impede the ego path. No stopping or parking signs are posted on the left, and pedestrians walk along the left sidewalk behind the curb.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08172", "split": "train", "clip_key": "2020-0218-103119_008131_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "008131"}, "frames": ["2020-0218-103119_008131_movie_t-3.jpg", "2020-0218-103119_008131_movie_t-2.jpg", "2020-0218-103119_008131_movie_t-1.jpg", "2020-0218-103119_008131_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck.", "environment_perception": "A narrow urban two-way street with no median and smooth pavement runs between buildings, and traffic is light as the ego vehicle proceeds in the left lane. On the left, a white flatbed truck is parked partly in the lane, reducing clearance along the curb. Ahead in the ego lane, a white box truck moves slowly near the centerline, constraining the ego vehicle's pace as it approaches the parked truck and the narrow gap. No salient traffic signals or speed signs are visible.", "hazard_reasoning": "There is a white truck parked on the left side of the road. The driver should carefully manoeuvre around the truck to maintain safe clearance and visibility due to its obstruction."}
{"id": "train_08173", "split": "train", "clip_key": "2020-0228-102841_075707_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "075707"}, "frames": ["2020-0228-102841_075707_movie_t-3.jpg", "2020-0228-102841_075707_movie_t-2.jpg", "2020-0228-102841_075707_movie_t-1.jpg", "2020-0228-102841_075707_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane intersection on a two-way road with painted medians and smooth pavement carries moderate, steady traffic as the ego car approaches the crosswalk. A black van directly ahead in the ego lane moves through the junction under a green traffic arrow, setting the ego vehicle's pace. A pedestrian ahead slightly right walks across the zebra from left to right and briefly occupies space near the van, potentially nearing the ego lane. A white sedan in the adjacent right same-direction lane accelerates forward alongside while maintaining its lane. No obstacles or work zones are visible.", "hazard_reasoning": "There is a black van driving in front of the ego car in the ego lane, because of the green traffic arrow. The driver should follow the vehicle ahead to maintain correct alignment with the signal and ensure safe maneuvering under the green arrow."}
{"id": "train_08174", "split": "train", "clip_key": "2020-0207-151349_042775_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "042775"}, "frames": ["2020-0207-151349_042775_movie_t-3.jpg", "2020-0207-151349_042775_movie_t-2.jpg", "2020-0207-151349_042775_movie_t-1.jpg", "2020-0207-151349_042775_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban roadway under an elevated structure carries two same-direction lanes with a left-side barrier; pavement is dry and intact, and traffic moves at a steady moderate pace. A gray sedan directly ahead in the ego lane pulls away as the space in front of it is clear, widening the gap. A dark van in the right adjacent lane travels slightly ahead at a similar speed, staying in its lane and not affecting the ego vehicle. Farther ahead, several cars in both lanes continue smoothly under the viaduct, collectively setting the pace without stopping. Strong sun glare from the left and deep shadows beneath the structure reduce contrast, with no salient signals or signs evident.", "hazard_reasoning": "There is a gray sedan driving away from the ego car, in the ego lane in front of the ego car, because the road ahead is clear. The driver should follow the vehicle ahead at a safe distance to anticipate any sudden stops or speed changes."}
{"id": "train_08175", "split": "train", "clip_key": "titan_clip_976_000036_movie", "source": {"subset": "titan", "scenario": "clip_976", "frame": "000036"}, "frames": ["titan_clip_976_000036_movie_t-3.jpg", "titan_clip_976_000036_movie_t-2.jpg", "titan_clip_976_000036_movie_t-1.jpg", "titan_clip_976_000036_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the stopped bus", "environment_perception": "An urban divided boulevard with smooth pavement and a low planted median runs straight, with light traffic throughout. The ego-vehicle approaches a zebra crossing beneath a clearly posted 50 speed-limit sign. Ahead in the same direction, a red bus is stopped on the left side of the road in front of the ego-car, partially occupying the left lane and constraining the usable space. On the opposite carriageway to the right, a white coach travels along without interacting with the ego path. No pedestrians are on the crosswalk and no other obstacles appear nearby.", "hazard_reasoning": "There is a red bus stopped, on the left side of the road, in front of the ego-car. The driver should manoeuvre carefully around the stopped bus to maintain a safe path and avoid collision."}
{"id": "train_08176", "split": "train", "clip_key": "2020-0220-102630_118988_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "118988"}, "frames": ["2020-0220-102630_118988_movie_t-3.jpg", "2020-0220-102630_118988_movie_t-2.jpg", "2020-0220-102630_118988_movie_t-1.jpg", "2020-0220-102630_118988_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane each way runs between midrise buildings, divided by a solid yellow center line; the pavement is dry and smooth and traffic is light. Directly ahead in the ego lane, a black minivan is stopped and pauses because traffic ahead has begun to move but there is not yet enough buffer space, so it holds the ego car. A signalized intersection is visible farther ahead, and a 40 speed-limit sign stands on the left.", "hazard_reasoning": "There is a black minivan stopped in front of the ego car, because traffic has started moving but not enough buffer room has been created yet. The driver should stop to maintain a safe distance and prevent a collision with the halted vehicle."}
{"id": "train_08177", "split": "train", "clip_key": "titan_clip_391_000270_movie", "source": {"subset": "titan", "scenario": "clip_391", "frame": "000270"}, "frames": ["titan_clip_391_000270_movie_t-3.jpg", "titan_clip_391_000270_movie_t-2.jpg", "titan_clip_391_000270_movie_t-1.jpg", "titan_clip_391_000270_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with interlocking pavers lacks lane markings or a median, and vehicle traffic is very light. A small white van ahead in the same direction rolls slowly near the center, constraining the pace. A man wearing a black T-shirt and white pants crosses midblock from the right to the left across the ego path, prompting a brief slowdown. Another pedestrian stands at the left curb near a signboard just ahead. Bicycles and orange cones line the right storefronts as static obstacles that slightly narrow the roadway.", "hazard_reasoning": "There is a man wearing a black t-shirt and white pants and crossing the street in the middle of the road, from the right side to the left side. The driver should slow down because a pedestrian is crossing mid-block and may not reach the sidewalk safely."}
{"id": "train_08178", "split": "train", "clip_key": "2020-0129-105040_047940_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "047940"}, "frames": ["2020-0129-105040_047940_movie_t-3.jpg", "2020-0129-105040_047940_movie_t-2.jpg", "2020-0129-105040_047940_movie_t-1.jpg", "2020-0129-105040_047940_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane arterial runs straight beneath an elevated expressway, with guardrails on the right and dry, smooth pavement; traffic is light and flows freely. A white van ahead in the ego lane pulls away, accelerating because the road in front of it is open. A dark sedan farther ahead in the right lane proceeds at a steady pace in the same direction, remaining outside the ego path. Farther ahead, a few cars in the left lane continue straight with ample spacing and no lane changes. No salient signals or signs are visible, and tree-lined sidewalks border both sides.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08179", "split": "train", "clip_key": "titan_clip_41_000480_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_41_000480_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_41_000480_movie_t-3_augB1.jpg", "titan_clip_41_000480_movie_t-2_augB1.jpg", "titan_clip_41_000480_movie_t-1_augB1.jpg", "titan_clip_41_000480_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban shopping street with cobblestone pavement functions as a single shared lane with no center line, and the ego-car creeps forward amid very light vehicle flow but many pedestrians. Ahead in the middle distance, a woman in a yellow dress carrying a handbag crosses from right to left toward the ego vehicle's path, briefly constraining its pace. Farther ahead, several pedestrians walk along the middle of the lane in the same direction as the ego car and remain in its path. On the left near the curb, another pedestrian steps toward the roadway before continuing alongside the shops, creating minor side conflict. No traffic signals or posted speeds are visible. Parked bicycles and freestanding shop boards line the right side, narrowing the usable width.", "hazard_reasoning": "There is a woman wearing a yellow dress, carrying a handbag, and crossing in the middle of the street from the right side to the left side towards the ego-car. The pedestrian is stepping into the vehicle's path, so the driver should manoeuvre carefully to avoid collision."}
{"id": "train_08180", "split": "train", "clip_key": "titan_clip_477_000570_movie", "source": {"subset": "titan", "scenario": "clip_477", "frame": "000570"}, "frames": ["titan_clip_477_000570_movie_t-3.jpg", "titan_clip_477_000570_movie_t-2.jpg", "titan_clip_477_000570_movie_t-1.jpg", "titan_clip_477_000570_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with a narrow, cobblestone single carriageway and no lane markings runs between bollard-lined sidewalks; pavement is good and traffic is light. The road gently curves ahead with buildings close to the curb. An oncoming cyclist approaches near the center-right, riding straight toward the ego path and closing distance. A pedestrian on the left steps off the sidewalk between bollards and moves toward the carriageway ahead of the ego vehicle. Additional pedestrians walk along both sidewalks and some in the distance begin to cross mid-block, remaining farther ahead. No traffic signals or posted limits are clearly visible.", "hazard_reasoning": "With no vehicles, obstacles, or traffic control devices present, the road appears clear, allowing the driver to proceed as normal."}
{"id": "train_08181", "split": "train", "clip_key": "2020-0218-103119_051158_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "051158"}, "frames": ["2020-0218-103119_051158_movie_t-3.jpg", "2020-0218-103119_051158_movie_t-2.jpg", "2020-0218-103119_051158_movie_t-1.jpg", "2020-0218-103119_051158_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection with smooth dry pavement and no physical median, and traffic is light to moderate as the queue begins moving on green. A gray box truck directly ahead in the ego lane accelerates from a stop on the green light, controlling the ego vehicle's speed. To the right, a dark car just ahead turns right through the intersection from the adjacent lane and clears away from the ego path. On the far right corner, a group of pedestrians waits at the crosswalk on the curb while vehicles proceed.", "hazard_reasoning": "There is a gray truck accelerating from a stop in front of the ego car, in the ego lane, because of a green traffic light. The driver should start moving to maintain traffic flow and a safe following distance as the truck accelerates."}
{"id": "train_08182", "split": "train", "clip_key": "2020-0214-102601_078769_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "078769"}, "frames": ["2020-0214-102601_078769_movie_t-3.jpg", "2020-0214-102601_078769_movie_t-2.jpg", "2020-0214-102601_078769_movie_t-1.jpg", "2020-0214-102601_078769_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way neighborhood street with narrow lanes and green bike shoulders has dry, intact pavement and no median; traffic in the left-direction lane is heavy and queued. A gray SUV directly ahead in the ego lane is stopped, holding the ego vehicle due to congestion. Farther ahead a white box truck is also stopped near a railway crossing, extending the queue. On the left edge beside a storefront, a person walking a bicycle proceeds slowly along the green shoulder near the travel lane, reducing clearance alongside the ego vehicle. A silver car stands parked partly in the shoulder near this cyclist, adding roadside obstruction. Railway crossing signals are visible ahead over the road.", "hazard_reasoning": "There is a gray SUV stopped in front of the ego car in the ego lane, because of traffic congestion. This indicates congestion ahead, so the driver should stop to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_08183", "split": "train", "clip_key": "2020-0205-152530_013968_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "013968"}, "frames": ["2020-0205-152530_013968_movie_t-3.jpg", "2020-0205-152530_013968_movie_t-2.jpg", "2020-0205-152530_013968_movie_t-1.jpg", "2020-0205-152530_013968_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with left-hand traffic has one lane in each direction, no median, and dry pavement with strong glare; traffic is heavy and slow. Directly ahead in the ego lane, a black mid-size SUV is stopped because of congestion further up, holding the ego vehicle. To the right, the opposing lane carries an oncoming white mini truck that inches toward the camera within its lane, while more oncoming vans queue behind it. On the left sidewalk beside a guardrail, a pedestrian walks away from the camera and stays clear of the roadway. Bright sunlight ahead reduces contrast.", "hazard_reasoning": "There is a black mid-suv stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. You should stop to prevent a rear-end collision with the stopped vehicle."}
{"id": "train_08184", "split": "train", "clip_key": "2020-0210-101957_000482_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_000482_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_000482_movie_t-3_augB1.jpg", "2020-0210-101957_000482_movie_t-2_augB1.jpg", "2020-0210-101957_000482_movie_t-1_augB1.jpg", "2020-0210-101957_000482_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian on left", "environment_perception": "An urban two-way street passes under an overpass toward a signalized intersection with a zebra crossing, single lane each direction, no median, and smooth pavement; traffic is light to moderate. On the left side near the curb, a pedestrian wearing a gray coat and carrying a handbag walks toward the ego car along the road edge. On the right corner, several pedestrians stand by the guardrail at the crosswalk, waiting and watching the junction. Ahead beyond the crosswalk, a dark sedan faces the ego direction near the stop line, appearing to pause on the far side of the intersection.", "hazard_reasoning": "There is a pedestrian wearing a gray coat and carrying a handbag walking on the left side of the road towards the ego car. Because the pedestrian is approaching the vehicle's path, the driver should be aware to prevent a potential collision."}
{"id": "train_08185", "split": "train", "clip_key": "2020-0206-101736_089383_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "089383"}, "frames": ["2020-0206-101736_089383_movie_t-3.jpg", "2020-0206-101736_089383_movie_t-2.jpg", "2020-0206-101736_089383_movie_t-1.jpg", "2020-0206-101736_089383_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction is divided from oncoming traffic by a raised hedge median; the pavement is dry and traffic is heavy with a queue at a signal. A white flatbed truck is stopped ahead in the ego lane at the red light, blocking the path and setting the pace. To its left, a white delivery truck and several cars wait in the adjacent same-direction lane, also stationary in the queue. On the opposite side of the median to the right, a dark blue truck approaches slowly in the oncoming lane, separated by the divider.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of a red traffic light. The ego-vehicle must stop to avoid a collision with the halted truck at the red signal."}
{"id": "train_08186", "split": "train", "clip_key": "titan_clip_1058_000534_movie", "source": {"subset": "titan", "scenario": "clip_1058", "frame": "000534"}, "frames": ["titan_clip_1058_000534_movie_t-3.jpg", "titan_clip_1058_000534_movie_t-2.jpg", "titan_clip_1058_000534_movie_t-1.jpg", "titan_clip_1058_000534_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban two-way street with one narrow lane each direction has no median and smooth pavement, but parked vans on the left narrow the usable lane; traffic appears light to moderate as the scene approaches a small intersection. A small flatbed truck ahead in the ego lane slows near the crosswalk and intersection, constraining the ego car's pace. On the left edge, a man wearing a black shirt and black pants walks toward the ego vehicle around a parked van, moving partly in the roadway because of the obstruction and potentially entering the ego lane. On the cross street ahead, a yellow van passes from right to left across the ego vehicle's path, occupying the intersection briefly.", "hazard_reasoning": "There is a man wearing a black shirt and black pants, and walking towards the ego car, on the left side of the road, because of the parked vehicle. The pedestrian is moving into the vehicle's path and requires the driver's attention to avoid a potential collision."}
{"id": "train_08187", "split": "train", "clip_key": "2020-0131-135401_010750_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-135401_010750_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-135401_010750_movie_t-3_augB1.jpg", "2020-0131-135401_010750_movie_t-2_augB1.jpg", "2020-0131-135401_010750_movie_t-1_augB1.jpg", "2020-0131-135401_010750_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid yellow centerline runs between closely spaced buildings; the asphalt is smooth and traffic is slow near an upcoming intersection. A white box truck directly ahead in the ego lane slows because of congestion further ahead, constraining the ego vehicle's speed. An oncoming black minivan is stopped at the right curb near the centerline, facing the ego vehicle but remaining in its lane. A small set of traffic signals is visible at the junction ahead, and a no-parking sign stands on the left.", "hazard_reasoning": "There is a white truck slowing down in front of the ego-car, because of traffic congestion ahead. Slow down to adapt to reduced speed and maintain a safe following distance."}
{"id": "train_08188", "split": "train", "clip_key": "2020-0210-101957_052133_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "052133"}, "frames": ["2020-0210-101957_052133_movie_t-3.jpg", "2020-0210-101957_052133_movie_t-2.jpg", "2020-0210-101957_052133_movie_t-1.jpg", "2020-0210-101957_052133_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction, smooth asphalt, and only painted double center lines shows light to moderate flow in our direction but heavy, slow oncoming traffic. Directly ahead in the ego lane a black hatchback slows because of the queue farther ahead, constraining our pace. Slightly left ahead a black sedan continues in the adjacent lane at a similar speed without merging. To the right of the center line an oncoming black minivan and a concrete mixer truck crawl in a long line that remains separated from our path, with a blue dump truck waiting at the far curb. A road marking shows 50, and wide zebra crossings span the foreground.", "hazard_reasoning": "There is a black hatchback slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to safely maintain distance as the vehicle ahead decelerates due to congestion."}
{"id": "train_08189", "split": "train", "clip_key": "2020-0227-153144_026295_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "026295"}, "frames": ["2020-0227-153144_026295_movie_t-3.jpg", "2020-0227-153144_026295_movie_t-2.jpg", "2020-0227-153144_026295_movie_t-1.jpg", "2020-0227-153144_026295_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two lanes in each direction and a landscaped median stretches ahead; the dry pavement looks well maintained and traffic is light to moderate, with steady oncoming flow on the opposite carriageway. A white van directly ahead in the ego lane is stopped at the intersection for a red light, holding the ego vehicle at the crosswalk. To the right, a separate right-turn lane branches off and a couple of vehicles queue near the junction without affecting the ego lane. High-rise apartment blocks and street trees line both sides, and no obstacles or work zones appear in the roadway.", "hazard_reasoning": "There is a white van stopped in the ego lane, because of the red traffic light. You should stop to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_08190", "split": "train", "clip_key": "titan_clip_1319_000066_movie", "source": {"subset": "titan", "scenario": "clip_1319", "frame": "000066"}, "frames": ["titan_clip_1319_000066_movie_t-3.jpg", "titan_clip_1319_000066_movie_t-2.jpg", "titan_clip_1319_000066_movie_t-1.jpg", "titan_clip_1319_000066_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be cautious of crossing pedestrian", "environment_perception": "An urban commercial street with a single lane in each direction, no median, and smooth pavement curves slightly right; vehicle traffic is light with no cars immediately ahead or oncoming. A pedestrian wearing a gray shirt ahead near midblock crosses from left to right in front of the ego car, moving through the ego lane and constraining the vehicle's pace. Two cyclists farther ahead travel in the same direction along the left red shoulder, keeping near the curb as they continue straight and reducing available passing space. A pedestrian on the right sidewalk close to the camera walks along the curb in the same direction, staying near the roadway edge and narrowing lateral clearance. No salient signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt, crossing to the right side of the street in front of the ego car. This pedestrian may continue into the vehicle's path, so the driver should be cautious to avoid a collision."}
{"id": "train_08191", "split": "train", "clip_key": "2020-0218-103119_046531_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0218-103119_046531_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0218-103119_046531_movie_t-3_augB1.jpg", "2020-0218-103119_046531_movie_t-2_augB1.jpg", "2020-0218-103119_046531_movie_t-1_augB1.jpg", "2020-0218-103119_046531_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain a safe following distance.", "environment_perception": "An urban two-way road with two same-direction lanes and painted centerlines stretches ahead on dry pavement with moderate traffic. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. In the adjacent right lane, a small kei truck travels straight at a similar speed, remaining in its lane without signaling. In the opposite lanes to the right, a large coach bus approaches through the intersection, continuing oncoming and separated by the center lines.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane. The truck is reducing speed suddenly, so you should slow down to maintain a safe following distance."}
{"id": "train_08192", "split": "train", "clip_key": "2020-0226-140503_090422_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "090422"}, "frames": ["2020-0226-140503_090422_movie_t-3.jpg", "2020-0226-140503_090422_movie_t-2.jpg", "2020-0226-140503_090422_movie_t-1.jpg", "2020-0226-140503_090422_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with a single lane in each direction and a yellow centerline approaches a signalized intersection; the pavement looks wet and traffic is light. Ahead in the ego lane, a green sedan accelerates away from the intersection, opening a small gap. Immediately ahead-left, a large box truck is stopped at the curb, partly intruding into the ego lane, so the sedan shifts slightly right to pass and it may constrain the ego car's pace. In the opposing lane, a white van comes through the junction toward the camera direction and continues straight past.", "hazard_reasoning": "There is a green sedan accelerating in front of the ego car, in the ego lane, because of a green traffic light. Start moving to maintain safe flow through the intersection as the light has turned green and the vehicle ahead is accelerating."}
{"id": "train_08193", "split": "train", "clip_key": "2020-0129-105040_096314_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "096314"}, "frames": ["2020-0129-105040_096314_movie_t-3.jpg", "2020-0129-105040_096314_movie_t-2.jpg", "2020-0129-105040_096314_movie_t-1.jpg", "2020-0129-105040_096314_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego's direction is divided from oncoming traffic by a fenced median; the pavement is dry and smooth, and traffic flows at a moderate pace. A silver truck directly ahead in the ego lane accelerates, drawing away and briefly setting the ego vehicle's pace. A silver sedan runs in the adjacent left lane slightly ahead, maintaining speed and limiting an immediate lane change. Oncoming cars move behind the median with no interaction.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08194", "split": "train", "clip_key": "2020-0225-102455_073386_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "073386"}, "frames": ["2020-0225-102455_073386_movie_t-3.jpg", "2020-0225-102455_073386_movie_t-2.jpg", "2020-0225-102455_073386_movie_t-1.jpg", "2020-0225-102455_073386_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop quickly to avoid collision.", "environment_perception": "An urban multi-lane arterial with smooth asphalt carries heavy, stop-and-go traffic amid high-rise buildings. A white van is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle at a standstill. A large box truck alongside on the immediate left crawls forward close to the lane line, restricting lateral space and preventing an easy lane change. On the right, a motorcycle filters ahead between lanes past the van and may merge into the ego lane when a gap appears. Overhead, an electronic sign displays a Japanese message to motorists.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. Stop quickly to avoid a rear-end collision under this situation."}
{"id": "train_08195", "split": "train", "clip_key": "2020-0206-101736_004168_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "004168"}, "frames": ["2020-0206-101736_004168_movie_t-3.jpg", "2020-0206-101736_004168_movie_t-2.jpg", "2020-0206-101736_004168_movie_t-1.jpg", "2020-0206-101736_004168_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the hatchback", "environment_perception": "An urban two-way street runs between shops with one lane each direction, a painted chevron center, and smooth pavement; traffic is light. A red sedan directly ahead in the ego lane proceeds straight and slows briefly as a white hatchback in front of it turns left from the ego lane into a side street, momentarily constraining the ego car's pace. No close oncoming vehicles are visible in the opposite lane to the right. Pedestrians line both sidewalks behind railings and continue walking without entering the roadway. Lane arrows and the chevron island are clearly marked.", "hazard_reasoning": "There is a white hatchback in front of the ego car, turning left from the ego lane. Carefully manoeuvre around the hatchback to avoid collision as it cuts into the turn."}
{"id": "train_08196", "split": "train", "clip_key": "titan_clip_895_000168_movie", "source": {"subset": "titan", "scenario": "clip_895", "frame": "000168"}, "frames": ["titan_clip_895_000168_movie_t-3.jpg", "titan_clip_895_000168_movie_t-2.jpg", "titan_clip_895_000168_movie_t-1.jpg", "titan_clip_895_000168_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of crossing pedestrian", "environment_perception": "A narrow urban shopping street with a single undivided lane and smooth asphalt is seen in daylight, with light vehicle flow but many pedestrians and no median. On the left foreground, a large box truck passes close alongside the ego vehicle and occupies part of the lane, narrowing the corridor. Ahead near the center, a pedestrian wearing a blue shirt crosses to the left side of the road, moving through the lane the ego vehicle is following and briefly occupying its path. Farther ahead, a small light-blue truck continues straight in the same lane, moving away and potentially setting the pace for the ego vehicle.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, crossing to the left side of the road. The driver should be aware of the crossing pedestrian because they may step into the vehicle's path."}
{"id": "train_08197", "split": "train", "clip_key": "2020-0220-102630_027009_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "027009"}, "frames": ["2020-0220-102630_027009_movie_t-3.jpg", "2020-0220-102630_027009_movie_t-2.jpg", "2020-0220-102630_027009_movie_t-1.jpg", "2020-0220-102630_027009_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and keep a safe distance behind the truck.", "environment_perception": "An urban street with two same-direction lanes and smooth pavement passes midrise buildings, and traffic is slow near a blockage. A large white box truck is directly ahead in the left ego lane and is stopped, blocking the lane and constraining the ego vehicle. To the right, a smaller covered-bed truck in the adjacent lane continues forward and passes the stopped truck, moving ahead. A narrow sidewalk with a guardrail lines the left curb, and no salient signals or speed signs are visible.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The stationary truck poses a collision risk and restricts forward visibility, so the driver should stop and keep a safe distance behind the truck."}
{"id": "train_08198", "split": "train", "clip_key": "2020-0225-145150_038015_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "038015"}, "frames": ["2020-0225-145150_038015_movie_t-3.jpg", "2020-0225-145150_038015_movie_t-2.jpg", "2020-0225-145150_038015_movie_t-1.jpg", "2020-0225-145150_038015_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with one same-direction lane bordered by chevroned shoulders and sidewalks appears dry, and traffic is heavy and slow; all visible vehicles move in the same direction with no oncoming traffic in view. A blue light truck directly ahead in the ego lane slows because congestion builds in front, constraining the ego car's pace. To the left, a white sedan waits on the chevroned shoulder beside the lane and may merge into the flow. Farther ahead and slightly right, several vans and cars queue and creep forward, extending the bottleneck. A metal fence lines the right edge while vehicles along the left shoulder narrow the corridor.", "hazard_reasoning": "There is a blue truck slowing down in front of the ego-car, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a potential rear-end collision under congested conditions."}
{"id": "train_08199", "split": "train", "clip_key": "titan_clip_468_000318_movie", "source": {"subset": "titan", "scenario": "clip_468", "frame": "000318"}, "frames": ["titan_clip_468_000318_movie_t-3.jpg", "titan_clip_468_000318_movie_t-2.jpg", "titan_clip_468_000318_movie_t-1.jpg", "titan_clip_468_000318_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with a single narrow lane lacks a centerline and is flanked by bollards and storefronts; the paver surface appears smooth and there is no vehicular traffic, so flow is light. A tall pedestrian wearing a blue shirt and blue pants walks toward the ego vehicle along the left edge of the roadway, potentially drifting into the lane. Farther ahead, another pedestrian walks in the middle of the lane away from the ego vehicle, occupying the path and limiting approach speed. Additional pedestrians move along both sidewalks near the bollards but remain off the roadway. The closely spaced bollards and shopfront displays create a constrained corridor.", "hazard_reasoning": "There is a tall pedestrian, wearing a blue shirt and blue pants, walking on the left side of the road towards the ego car. The driver should carefully manoeuvre to give the pedestrian sufficient space and avoid a potential collision."}
{"id": "train_08200", "split": "train", "clip_key": "titan_clip_896_000552_movie", "source": {"subset": "titan", "scenario": "clip_896", "frame": "000552"}, "frames": ["titan_clip_896_000552_movie_t-3.jpg", "titan_clip_896_000552_movie_t-2.jpg", "titan_clip_896_000552_movie_t-1.jpg", "titan_clip_896_000552_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "An urban shopping street with a narrow two-way undivided roadway curves slightly ahead; the pavement is smooth and traffic is light. A pedestrian wearing a black T-shirt and black pants crosses in front of the ego vehicle from left to right, moving briskly through the lane and directly blocking its path. An oncoming white van waits near the middle of the street ahead, inching forward amid foot traffic and further limiting space. Several other pedestrians cluster on both sidewalks to the left and right, some edging toward the curb as if preparing to cross and potentially entering the ego lane. Bollards line the right sidewalk and there is no marked crosswalk at this point, so people cross mid-block.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt and black pants, crossing the street in front of the ego car, from the left side to the right side. The driver should yield because the pedestrian is directly in the vehicle's path and has the right of way."}
{"id": "train_08201", "split": "train", "clip_key": "2020-0204-103442_052316_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "052316"}, "frames": ["2020-0204-103442_052316_movie_t-3.jpg", "2020-0204-103442_052316_movie_t-2.jpg", "2020-0204-103442_052316_movie_t-1.jpg", "2020-0204-103442_052316_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane boulevard with smooth pavement has light traffic, with same-direction lanes on the left side and oncoming lanes on the right separated by a painted median. A gray van drives ahead in the ego lane and proceeds straight at a steady pace, setting the immediate lead vehicle. Slightly ahead to the left, a black sedan in the adjacent curb lane continues straight in parallel without drifting toward the ego lane. On the opposite side, a silver van approaches in its oncoming curb lane, remaining separated by the median. A circular roadside sign ahead shows 50, indicating the posted speed limit.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08202", "split": "train", "clip_key": "2020-0212-102546_095074_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "095074"}, "frames": ["2020-0212-102546_095074_movie_t-3.jpg", "2020-0212-102546_095074_movie_t-2.jpg", "2020-0212-102546_095074_movie_t-1.jpg", "2020-0212-102546_095074_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection beneath elevated expressways; several same-direction lanes with red-painted pavement are dry and in good condition, and traffic is moderate, bunching near the stop line. A small white flatbed truck ahead in the ego lane is stopped for a red light, directly blocking the ego vehicle's path. A white van slightly ahead in the lane to the left moves slowly toward the intersection in parallel, limiting a left-side pass. Farther ahead in the right-adjacent lane, a dark SUV slows and queues before the junction, remaining in its lane. Overhead blue guide signs indicate Route 17 toward Saitama and Kan-etsu directions, and there is no visible oncoming traffic due to the divided layout and roadside barriers.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should slow down to maintain a safe distance and avoid rear-ending the stopped truck."}
{"id": "train_08203", "split": "train", "clip_key": "titan_clip_199_000042_movie", "source": {"subset": "titan", "scenario": "clip_199", "frame": "000042"}, "frames": ["titan_clip_199_000042_movie_t-3.jpg", "titan_clip_199_000042_movie_t-2.jpg", "titan_clip_199_000042_movie_t-1.jpg", "titan_clip_199_000042_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "A narrow urban two-way street lined with small shops has a single lane in each direction, no median, and smooth pavement; traffic is light with no moving vehicles. Ahead in the lane, a pedestrian in dark clothing crosses from left to right, briefly occupying the ego path. On the right side, a pedestrian wearing a white dress and carrying a white umbrella walks away from the ego car along the curb, staying near the edge of the roadway. Farther ahead near the centerline another person walks away in the same direction but keeps to the side. A blue pedestrian-warning sign is visible ahead. Parked scooters, bicycles, and storefront items encroach on the roadway and narrow the usable lane.", "hazard_reasoning": "A pedestrian wearing a white dress and carrying a white umbrella is walking on the right side of the road, away from the ego car. The pedestrian may step into the vehicle's path unexpectedly, so the driver needs to carefully manoeuvre around them to avoid a collision."}
{"id": "train_08204", "split": "train", "clip_key": "2020-0129-105040_091003_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "091003"}, "frames": ["2020-0129-105040_091003_movie_t-3.jpg", "2020-0129-105040_091003_movie_t-2.jpg", "2020-0129-105040_091003_movie_t-1.jpg", "2020-0129-105040_091003_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban divided boulevard with two lanes in each direction runs straight past trees and hedges; the pavement looks smooth and traffic is light to moderate. A small white truck ahead in the ego lane slows, constraining the ego vehicle's pace. A white car slightly to the right in the adjacent right lane proceeds steadily ahead and passes the slowing truck while staying in its lane. Several oncoming cars travel normally in the opposite carriageway beyond the planted median. A large flatbed truck is stopped on the far right shoulder of the opposite side.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The truck's deceleration could force the driver to brake suddenly, so the driver should slow down to maintain a safe following distance."}
{"id": "train_08205", "split": "train", "clip_key": "titan_clip_792_000528_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_792_000528_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_792_000528_movie_t-3_augB1.jpg", "titan_clip_792_000528_movie_t-2_augB1.jpg", "titan_clip_792_000528_movie_t-1_augB1.jpg", "titan_clip_792_000528_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "A narrow urban neighborhood street with shops on both sides forms a two-way roadway without a centerline; the pavement looks smooth and traffic is very light with no oncoming vehicles. Ahead in the ego lane, a cyclist in dark pants rides in the middle of the road moving away from the camera and effectively constrains the ego vehicle's pace. No other moving road users appear nearby. Colorful shop banners and closely spaced utility poles line the curbs. Several bicycles are parked along the left edge near the roadway, slightly narrowing the usable space but remaining clear of the travel path.", "hazard_reasoning": "There is a cyclist wearing black pants and cycling, in the middle of the road, away from the ego-car. The cyclist may slow or change position unexpectedly, so the driver should maintain a safe buffer by following the vehicle ahead."}
{"id": "train_08206", "split": "train", "clip_key": "2020-0129-105040_018535_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "018535"}, "frames": ["2020-0129-105040_018535_movie_t-3.jpg", "2020-0129-105040_018535_movie_t-2.jpg", "2020-0129-105040_018535_movie_t-1.jpg", "2020-0129-105040_018535_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban three-lane roadway carries same-direction traffic between tall buildings, with a raised median on the right and guardrails on the left; the pavement is smooth, the leftmost lane is red-painted, and flow is heavy and stop-and-go. Directly ahead in the ego lane, a white hatchback is stopped because traffic is congested, holding the ego vehicle. In the right lane ahead, a silver box truck crawls within its lane, matching the queue. Farther ahead near the center line, a motorcyclist filters between lanes and passes the queue alongside the ego lane.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, because of traffic congestion ahead. Drivers should stop to maintain a safe distance and avoid rear-end collisions in the slowing traffic."}
{"id": "train_08207", "split": "train", "clip_key": "2020-0214-102601_016789_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "016789"}, "frames": ["2020-0214-102601_016789_movie_t-3.jpg", "2020-0214-102601_016789_movie_t-2.jpg", "2020-0214-102601_016789_movie_t-1.jpg", "2020-0214-102601_016789_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane divided arterial runs between tall buildings, with smooth asphalt and a guardrail median separating oncoming lanes to the right; traffic is moderate and generally steady. A white van ahead in the ego lane drives away from the ego car, setting the pace as it continues straight. To the left, another white van in the adjacent lane holds a similar speed slightly ahead, remaining parallel. Farther ahead near the center, a dark box truck moves slowly, causing vehicles behind it to compress. In the right-turn-designated lane by the median, a small hatchback proceeds ahead within its lane without merging.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. The van will likely stop at the red light, so follow it to maintain a safe braking distance."}
{"id": "train_08208", "split": "train", "clip_key": "titan_clip_919_000360_movie", "source": {"subset": "titan", "scenario": "clip_919", "frame": "000360"}, "frames": ["titan_clip_919_000360_movie_t-3.jpg", "titan_clip_919_000360_movie_t-2.jpg", "titan_clip_919_000360_movie_t-1.jpg", "titan_clip_919_000360_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian", "environment_perception": "A narrow urban commercial street with smooth asphalt and a faint centerline runs ahead, with orange cones along the right curb; vehicle traffic is light but pedestrian activity is heavy. On the right edge of the roadway, a pedestrian wearing a blue shirt and black pants and carrying a backpack walks toward the ego car and may enter the ego lane. On the left, a cluster of pedestrians steps off the curb and drifts diagonally into the lane ahead, constraining the ego vehicle's pace. Farther ahead in the same direction, a small truck stands at the left curb with people around it, narrowing the available path.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, black pants, and carrying a backpack, walking on the right side of the road, toward the ego car. The driver should be alert to this pedestrian as they may step into the vehicle's path unexpectedly, warranting reduced speed and heightened awareness."}
{"id": "train_08209", "split": "train", "clip_key": "2020-0225-145150_039189_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "039189"}, "frames": ["2020-0225-145150_039189_movie_t-3.jpg", "2020-0225-145150_039189_movie_t-2.jpg", "2020-0225-145150_039189_movie_t-1.jpg", "2020-0225-145150_039189_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes and a fenced median separating oncoming traffic runs past mid-rise buildings; the pavement is dry and traffic is moderate, slowing near a signalized intersection ahead. A blue truck directly ahead in the ego lane slows because congestion forms in front, reducing the headway. In the lane to the left, a gray covered truck travels slightly ahead at low speed, pacing the queue and constraining overtaking options. A small hatchback on the far left pulls alongside and moves forward within its lane, overtaking the ego vehicle without entering the ego path.", "hazard_reasoning": "There is a blue truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. Because the truck is decelerating due to congestion, the driver should slow down to maintain a safe following distance and avoid a collision under these conditions."}
{"id": "train_08210", "split": "train", "clip_key": "2020-0205-103411_104605_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "104605"}, "frames": ["2020-0205-103411_104605_movie_t-3.jpg", "2020-0205-103411_104605_movie_t-2.jpg", "2020-0205-103411_104605_movie_t-1.jpg", "2020-0205-103411_104605_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop due to congestion ahead.", "environment_perception": "An urban divided roadway with smooth pavement runs under an overhead gantry; the ego car is in a single left lane bounded by a fence on the left and flexible posts separating it from a faster same-direction lane, and traffic in the ego lane is slow. A gray box truck directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle in place. In the adjacent lane to the right, a small truck moves steadily forward in the same direction, continuing past the queue without merging toward the ego lane. A pedestrian walks along the fenced sidewalk on the left, remaining outside the roadway.", "hazard_reasoning": "There is a gray truck stopped in front of the ego-car, because of the traffic congestion ahead. The driver should stop due to congestion ahead to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_08211", "split": "train", "clip_key": "titan_clip_1130_000468_movie", "source": {"subset": "titan", "scenario": "clip_1130", "frame": "000468"}, "frames": ["titan_clip_1130_000468_movie_t-3.jpg", "titan_clip_1130_000468_movie_t-2.jpg", "titan_clip_1130_000468_movie_t-1.jpg", "titan_clip_1130_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe distance", "environment_perception": "A narrow urban residential two-way street with smooth pavement runs between buildings on the left and a tree-lined fence on the right, with no median. Traffic is light and no vehicles are visible as the ego vehicle proceeds along the left side. A pedestrian in a white T-shirt and black pants walks ahead on the left side away from the ego car, occupying part of the travel path. Beside him, a person in a white top and teal pants also walks away along the left edge within the lane. Farther ahead, another pedestrian near the centerline continues in the same direction, further narrowing the usable space.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and black pants, walking on the left side of the road, away from the ego car. The driver should slow down to maintain a safe distance from the pedestrian and avoid a potential collision."}
{"id": "train_08212", "split": "train", "clip_key": "2020-0129-144857_033516_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "033516"}, "frames": ["2020-0129-144857_033516_movie_t-3.jpg", "2020-0129-144857_033516_movie_t-2.jpg", "2020-0129-144857_033516_movie_t-1.jpg", "2020-0129-144857_033516_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated structure with a right-side guardrail and concrete barrier; the dry asphalt is in good condition and traffic is heavy and largely stopped. In the ego lane directly ahead, a black van is stopped and holds the ego vehicle because of congestion ahead. Farther ahead in the same lane, a large white box truck remains stationary under the overpass, reinforcing the queue. In the adjacent lane to the left, a green van creeps forward beside the ego car and continues slowly past while staying in its lane.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The black SUV is halted due to congestion, so you must stop to avoid a rear-end collision."}
{"id": "train_08213", "split": "train", "clip_key": "2020-0205-103411_015490_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "015490"}, "frames": ["2020-0205-103411_015490_movie_t-3.jpg", "2020-0205-103411_015490_movie_t-2.jpg", "2020-0205-103411_015490_movie_t-1.jpg", "2020-0205-103411_015490_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes runs beside a fenced median that separates oncoming traffic, and the pavement looks smooth. Traffic in the ego's direction is heavy and largely stop-and-go. A black van directly ahead in the ego lane slows because of congestion ahead, holding the ego car's pace. In the adjacent right lane ahead-right, a light blue minivan crawls forward in a queue, limiting room to change lanes. Along the left edge, a white sedan draws alongside and inches forward near the lane line, and may enter the ego lane. On the far side of the median, oncoming cars pass steadily.", "hazard_reasoning": "There is a black van slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The van's reduced speed signals congestion ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_08214", "split": "train", "clip_key": "2020-0217-144444_017111_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-144444_017111_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-144444_017111_movie_t-3_augB1.jpg", "2020-0217-144444_017111_movie_t-2_augB1.jpg", "2020-0217-144444_017111_movie_t-1_augB1.jpg", "2020-0217-144444_017111_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban multi-lane road approaches a junction under a pedestrian overpass; the pavement is dry and traffic becomes heavy. A gray van directly ahead in the ego lane slows because of congestion ahead, constraining the ego car's pace. To the right, a white hatchback draws level and edges ahead while staying in its lane near the ego vehicle. Farther ahead slightly right, a large box truck also slows in the same direction, feeding the queue. A stationary sedan sits in the far left curb lane, reducing usable space.", "hazard_reasoning": "There is a gray van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The gray van's deceleration indicates congested traffic ahead, so the driver should reduce speed to maintain a safe following distance."}
{"id": "train_08215", "split": "train", "clip_key": "titan_clip_1168_000516_movie", "source": {"subset": "titan", "scenario": "clip_1168", "frame": "000516"}, "frames": ["titan_clip_1168_000516_movie_t-3.jpg", "titan_clip_1168_000516_movie_t-2.jpg", "titan_clip_1168_000516_movie_t-1.jpg", "titan_clip_1168_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision", "environment_perception": "A dense urban shopping street with a single narrow shared lane curves left, paved with bricks and lacking a divider; vehicular flow is very light while pedestrian activity is heavy. On the right side of the road, a pedestrian wearing blue pants and carrying a handbag walks away from the ego vehicle along the edge of the lane, close enough that she may drift into the path. Two people by the right storefronts walk toward the camera along the curb, occasionally edging near the roadway and remaining adjacent to the ego lane. Farther ahead, several pedestrians occupy the center of the lane while proceeding straight, reducing the available passage. A white van stands parked at the left curb with its body protruding slightly, further narrowing the corridor.", "hazard_reasoning": "There is a pedestrian wearing blue pant and carrying handbag walking away from the ego car on the right side of the road. The pedestrian's proximity to the vehicle path and potential for unpredictable movement requires the driver to slow down to maintain a safe separation."}
{"id": "train_08216", "split": "train", "clip_key": "titan_clip_1129_000450_movie", "source": {"subset": "titan", "scenario": "clip_1129", "frame": "000450"}, "frames": ["titan_clip_1129_000450_movie_t-3.jpg", "titan_clip_1129_000450_movie_t-2.jpg", "titan_clip_1129_000450_movie_t-1.jpg", "titan_clip_1129_000450_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian walking on roadside", "environment_perception": "An urban narrow one-lane street with smooth pavement runs between storefronts on the left and a riverside railing with trees on the right, with no centerline or dedicated sidewalk and no motor traffic visible. A pedestrian wearing a white coat walks toward the ego vehicle along the right edge because there is no sidewalk, partially occupying the lane and directly in its path. Farther ahead near the center of the lane, a few other pedestrians walk along the road and may affect the vehicle's pace as it nears. No salient traffic signals or signs appear, and there are no parked cars or obstacles.", "hazard_reasoning": "There is a pedestrian wearing a white coat and walking on the right side of the road, towards the ego car, because of the lack of a sidewalk. The pedestrian may move into the lane due to the missing sidewalk, posing a collision risk."}
{"id": "train_08217", "split": "train", "clip_key": "titan_clip_34_000420_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_34_000420_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_34_000420_movie_t-3_augB1.jpg", "titan_clip_34_000420_movie_t-2_augB1.jpg", "titan_clip_34_000420_movie_t-1_augB1.jpg", "titan_clip_34_000420_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian in road", "environment_perception": "An urban alley-like street with patterned stone pavement has a single narrow shared lane and no median, with light, slow traffic. A silver van ahead near the center approaches slowly in the oncoming direction, constrained by the tight corridor. A pedestrian wearing a white shirt and carrying a shopping bag walks in the middle of the road toward the ego vehicle because a parked car narrows the space, making the person relevant to the ego path. Several other pedestrians on the left ahead walk close to the curb along the storefronts, staying near the travel lane but not crossing. A parked car on the right side further pinches the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, holding a shopping bag, walking in the middle of the road towards the ego car, because of the parked vehicle. The driver should be aware of this pedestrian in the road to avoid a potential collision."}
{"id": "train_08218", "split": "train", "clip_key": "2020-0205-152530_063106_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "063106"}, "frames": ["2020-0205-152530_063106_movie_t-3.jpg", "2020-0205-152530_063106_movie_t-2.jpg", "2020-0205-152530_063106_movie_t-1.jpg", "2020-0205-152530_063106_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban roadway runs under elevated viaducts, forming a two-lane one-way section that curves right; a guardrail borders the right and a wall the left, and the pavement looks smooth. Traffic is light to moderate and bunches slightly toward the curve. A white box truck directly ahead in the ego lane slows because of congestion forming ahead, constraining the ego car's pace. In the adjacent left lane, a black hatchback slightly ahead continues at a steady speed and overtakes the slowing truck while keeping its lane. Farther ahead near the bend, a small white car in the left lane travels along with spacing to following vehicles. The rightward curve under the barriers narrows the view but no other hazards are apparent.", "hazard_reasoning": "There is a white truck slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and avoid a collision under these conditions."}
{"id": "train_08219", "split": "train", "clip_key": "2020-0213-143552_068644_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "068644"}, "frames": ["2020-0213-143552_068644_movie_t-3.jpg", "2020-0213-143552_068644_movie_t-2.jpg", "2020-0213-143552_068644_movie_t-1.jpg", "2020-0213-143552_068644_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction runs beside midrise buildings, separated from oncoming lanes by a low hedge median; the pavement is smooth and traffic moves steadily. A white box truck ahead in the ego lane drives away at a constant pace, setting the ego vehicle's speed. In the opposing lanes to the right of the median, another large truck travels toward the camera and passes without interacting with the ego path. Overhead gantry signs display lane guidance arrows for through and right-turn movements.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. The truck may slow or brake unexpectedly, so the driver should maintain awareness and follow at a safe distance under this situation."}
{"id": "train_08220", "split": "train", "clip_key": "2020-0127-132751_104395_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0127-132751_104395_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0127-132751_104395_movie_t-3_augB1.jpg", "2020-0127-132751_104395_movie_t-2_augB1.jpg", "2020-0127-132751_104395_movie_t-1_augB1.jpg", "2020-0127-132751_104395_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately for the pedestrian", "environment_perception": "An urban two-lane, two-way street with a painted yellow median and dry, slightly worn pavement runs past shops, and traffic is light and slow. A silver van directly ahead in the ego lane shows brake lights and pauses, constraining the ego vehicle. To the right front, a pedestrian carrying a handbag crosses the street toward the left in front of the ego car, stepping through the ego lane and prompting the slowdown. An oncoming dark car travels past in the opposite lane without interaction. No salient signals are visible, and the roadside has a curb and guardrail with no additional hazards.", "hazard_reasoning": "There is a pedestrian carrying a handbag and crossing the street, in front of the ego car and walking towards the left. The driver must stop because the pedestrian is directly in the vehicle's path and could be struck if the vehicle continues moving."}
{"id": "train_08221", "split": "train", "clip_key": "2020-0203-154554_019173_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "019173"}, "frames": ["2020-0203-154554_019173_movie_t-3.jpg", "2020-0203-154554_019173_movie_t-2.jpg", "2020-0203-154554_019173_movie_t-1.jpg", "2020-0203-154554_019173_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban arterial with two same-direction lanes, bordered by buildings and right-side guardrails, has smooth asphalt and slowing flow near an upcoming intersection. Traffic becomes heavy ahead as a queue forms. A black sedan directly ahead in the ego lane slows toward the intersection because congestion blocks the way. A large green-and-white coach bus in the left lane travels slightly ahead at low speed, constraining overtaking. To the right beyond a barrier, a parallel stream of cars creeps forward toward the same junction with little interaction with the ego lane. A yellow 100 m sign with a worker symbol warns of road work ahead.", "hazard_reasoning": "There is a black sedan slowing near the intersection, in the ego lane, because of traffic congestion ahead at the intersection. Drivers should slow down to adapt to the reduced speed of the sedan and avoid rear-end collisions in the congested intersection."}
{"id": "train_08222", "split": "train", "clip_key": "titan_clip_595_000360_movie", "source": {"subset": "titan", "scenario": "clip_595", "frame": "000360"}, "frames": ["titan_clip_595_000360_movie_t-3.jpg", "titan_clip_595_000360_movie_t-2.jpg", "titan_clip_595_000360_movie_t-1.jpg", "titan_clip_595_000360_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian walking nearby", "environment_perception": "A narrow urban backstreet with a single travel lane and no median runs between dense storefronts; the pavement is smooth and dry, and traffic is very light with no vehicles ahead or oncoming. On the right edge near the curb, a woman wearing a white shirt and a black skirt walks toward the ego car, close to the roadway and may step into the lane. Rows of parked bicycles line the left side, and a storefront with orange cones slightly narrows the right margin. No prominent traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a woman pedestrian wearing a white shirt and a black skirt and walking on the right side of the road, towards the ego car. Drivers should be aware in case the pedestrian steps into the driving lane unexpectedly."}
{"id": "train_08223", "split": "train", "clip_key": "titan_clip_1121_000024_movie", "source": {"subset": "titan", "scenario": "clip_1121", "frame": "000024"}, "frames": ["titan_clip_1121_000024_movie_t-3.jpg", "titan_clip_1121_000024_movie_t-2.jpg", "titan_clip_1121_000024_movie_t-1.jpg", "titan_clip_1121_000024_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "be aware of the cyclist ahead", "environment_perception": "An urban residential scene shows the ego car on a very narrow two-way road with no center divider, smooth pavement, and light traffic; the road curves slightly right between buildings and hedges. An oncoming cyclist wearing black pants rides in the middle of the road toward the ego vehicle, occupying the travel way and constraining the ego's approach. Ahead on the right, a white van noses out from a driveway and stops at the edge of the lane, waiting for a gap. Two pedestrians stand on the right sidewalk near a building entrance, stationary and off the roadway. Buildings close to the curb create a limited view around the bend.", "hazard_reasoning": "There is a cyclist wearing black pant in the middle of the road cycling towards the ego car in the middle of the road. The cyclist is riding in the lane towards your vehicle, so be aware to avoid a collision."}
{"id": "train_08224", "split": "train", "clip_key": "2020-0131-135401_056284_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "056284"}, "frames": ["2020-0131-135401_056284_movie_t-3.jpg", "2020-0131-135401_056284_movie_t-2.jpg", "2020-0131-135401_056284_movie_t-1.jpg", "2020-0131-135401_056284_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped truck.", "environment_perception": "An urban three-lane arterial runs between tall buildings with smooth dry pavement and a barrier on the right separating oncoming traffic; overall flow is moderate and steady. Ahead in the ego lane, two sedans travel at a similar speed and effectively set the pace. To the right, a light-blue hatchback draws alongside and then overtakes, moving ahead. On the left side near the curb, a white truck is stopped, leaving the left lane partially blocked and prompting traffic there to stay right.", "hazard_reasoning": "There is a white truck stopped on the left side of the road. The stationary vehicle may obstruct the view of emerging traffic or pedestrians and requires the driver to be aware to maintain safe clearance."}
{"id": "train_08225", "split": "train", "clip_key": "2020-0227-104226_081922_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "081922"}, "frames": ["2020-0227-104226_081922_movie_t-3.jpg", "2020-0227-104226_081922_movie_t-2.jpg", "2020-0227-104226_081922_movie_t-1.jpg", "2020-0227-104226_081922_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An elevated urban roadway with noise barriers carries two same-direction lanes, the ego vehicle traveling in the left lane on dry, well-kept pavement; traffic is heavy, with the right lane largely queued and the left moving slowly. A red SUV directly ahead in the ego lane slows because congestion develops in front, constraining the ego car's pace. To the right, a line of large trucks and cars crawls or stands still in the adjacent lane, maintaining the jam. On the far right, a white sedan edges from the shoulder into the right lane but stays clear of the ego lane. No salient signals or speed signs are visible.", "hazard_reasoning": "There is a red SUV slowing in front of the ego car, because of traffic congestion ahead. The red SUV's reduced speed signals congestion ahead, so you should slow down to maintain a safe following distance."}
{"id": "train_08226", "split": "train", "clip_key": "2020-0220-151845_045908_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "045908"}, "frames": ["2020-0220-151845_045908_movie_t-3.jpg", "2020-0220-151845_045908_movie_t-2.jpg", "2020-0220-151845_045908_movie_t-1.jpg", "2020-0220-151845_045908_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided road with two same-direction lanes runs under elevated structures, bounded by concrete walls and guardrails; the pavement is dry and traffic is moderate. A pink truck ahead in the ego lane slows, reducing space and constraining the ego vehicle's pace. In the adjacent right lane, a white SUV moves slightly faster and overtakes while staying clear of the ego lane. Farther ahead in the right lane, a small car continues steadily with ample gap.", "hazard_reasoning": "There is a pink truck slowing in front of the ego car, in the ego lane. The driver should slow down to match the truck's reduced speed and maintain a safe following distance."}
{"id": "train_08227", "split": "train", "clip_key": "titan_clip_822_000066_movie", "source": {"subset": "titan", "scenario": "clip_822", "frame": "000066"}, "frames": ["titan_clip_822_000066_movie_t-3.jpg", "titan_clip_822_000066_movie_t-2.jpg", "titan_clip_822_000066_movie_t-1.jpg", "titan_clip_822_000066_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian.", "environment_perception": "An urban backstreet with narrow single-lane width and no centerline runs between closely spaced buildings; the pavement is smooth and traffic is light with no moving vehicles. A pedestrian wearing a blue shirt and gray pants walks away from the ego car along the left edge of the road, close to the travel lane and reducing lateral space. Farther ahead on the right side, another pedestrian proceeds in the same direction beside the storefronts, keeping to the edge. A person is visible in the distance near the left side, also walking away along the margin. A white car is parked at a left-side driveway with its nose near the curb but stationary.", "hazard_reasoning": "A pedestrian wearing a blue shirt and gray pants is walking on the left side of the road, away from the ego car. The pedestrian could step into the roadway unexpectedly, so the driver should remain alert to prevent a potential collision."}
{"id": "train_08228", "split": "train", "clip_key": "2020-0218-103119_002934_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002934"}, "frames": ["2020-0218-103119_002934_movie_t-3.jpg", "2020-0218-103119_002934_movie_t-2.jpg", "2020-0218-103119_002934_movie_t-1.jpg", "2020-0218-103119_002934_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with a painted chevron median and smooth pavement runs straight between tall buildings in bright sun, and traffic is light to moderate. The ego vehicle travels in the left-side carriageway with two same-direction lanes while oncoming traffic flows to the right. A dark car ahead in the ego lane moves steadily away and loosely sets the pace. A black sedan approaches in the right oncoming lane and continues past without edging toward the median. Farther ahead, a white truck in the adjacent same-direction lane maintains speed alongside the flow.", "hazard_reasoning": "There is a black sedan driving in the right lane toward the ego car. The approaching black sedan could collide with you if you continue moving, so you should stop immediately."}
{"id": "train_08229", "split": "train", "clip_key": "titan_clip_968_000120_movie", "source": {"subset": "titan", "scenario": "clip_968", "frame": "000120"}, "frames": ["titan_clip_968_000120_movie_t-3.jpg", "titan_clip_968_000120_movie_t-2.jpg", "titan_clip_968_000120_movie_t-1.jpg", "titan_clip_968_000120_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way residential street with one narrow lane per direction, no median, and smooth pavement is shown; traffic is light with no visible oncoming vehicles. Ahead in the left-side ego lane, a work truck stands stopped partly in the roadway, narrowing the passage and constraining the pace. A man dressed in white pants and a white shirt stands in the roadway close to the truck directly ahead of the ego-car, attending to the vehicle and temporarily occupying the ego path. On the right edge, a compact excavator and work materials are parked tight to the lane and present roadside obstacles.", "hazard_reasoning": "There is a man dressed in white pants and a white shirt, standing in the middle of the road in front of the ego-car. The pedestrian is in the vehicle's path and could be struck if the driver does not stop immediately."}
{"id": "train_08230", "split": "train", "clip_key": "2020-0213-143552_021968_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "021968"}, "frames": ["2020-0213-143552_021968_movie_t-3.jpg", "2020-0213-143552_021968_movie_t-2.jpg", "2020-0213-143552_021968_movie_t-1.jpg", "2020-0213-143552_021968_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two-way traffic and a narrow central railing median is visible; the ego car is in the left lane approaching a signalized intersection on smooth pavement as traffic runs heavy and queues form. A small gray canvas-covered truck directly ahead in the ego lane is stopped because of congestion, blocking the ego car's path. Farther ahead to the left, a large white box truck is also stopped near the crosswalk, lengthening the same-direction queue. In the opposite carriageway to the right, a white minivan approaches and continues past through the junction without affecting the ego lane. A silver hatchback alongside on the left creeps forward in the adjacent same-direction lane. Overhead blue direction signs mark the junction.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of traffic congestion ahead. This requires the driver to stop to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_08231", "split": "train", "clip_key": "2020-0129-105040_038848_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "038848"}, "frames": ["2020-0129-105040_038848_movie_t-3.jpg", "2020-0129-105040_038848_movie_t-2.jpg", "2020-0129-105040_038848_movie_t-1.jpg", "2020-0129-105040_038848_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane road runs under an elevated expressway with dry, smooth pavement and moderate same-direction traffic flowing steadily. A small white kei car ahead slightly left in the ego lane cruises at a modest speed and effectively sets the ego car's pace. Farther ahead, a rider in black gear on a motorcycle shifts from the left lane toward the ego lane to get around slower vehicles and may enter the ego path. A large silver flatbed truck in the far-left lane moves slowly alongside the curb but stays in its lane. In the right lane, a dark hatchback travels parallel ahead without encroaching, while overhead blue direction boards span the roadway.", "hazard_reasoning": "There is a cyclist wearing black riding gears, helmet, changing from the left lane to the ego lane, because there is traffic congestion, in front of the ego car. The driver should slow down to avoid a collision as the cyclist merges into the ego lane due to congestion."}
{"id": "train_08232", "split": "train", "clip_key": "titan_clip_1151_000414_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1151_000414_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1151_000414_movie_t-3_augB1.jpg", "titan_clip_1151_000414_movie_t-2_augB1.jpg", "titan_clip_1151_000414_movie_t-1_augB1.jpg", "titan_clip_1151_000414_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with block-paved surface curves left, lacking a centerline or median, and traffic is light and slow. A pedestrian in yellow pants carrying an umbrella crosses ahead mid-block from right to left toward the near left side, moving through the vehicle's path. A small flatbed truck farther ahead in the same direction proceeds slowly near the center of the roadway and sets the pace. Another pedestrian with an umbrella stands at the right curb by a storefront, close to the carriageway but stationary. A white van is parked along the left edge near the camera, narrowing the lane.", "hazard_reasoning": "There is a pedestrian wearing yellow pants and carrying an umbrella, crossing in the middle of the road to the left side of the road. The driver should slow down because the pedestrian's unpredictable movement in the travel lane increases collision risk."}
{"id": "train_08233", "split": "train", "clip_key": "2020-0204-103442_078094_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "078094"}, "frames": ["2020-0204-103442_078094_movie_t-3.jpg", "2020-0204-103442_078094_movie_t-2.jpg", "2020-0204-103442_078094_movie_t-1.jpg", "2020-0204-103442_078094_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down to avoid collision", "environment_perception": "An urban two-way street with one lane per direction and a solid centerline runs past mid-rise buildings; the asphalt looks smooth and traffic is light. A black sedan ahead in the ego lane proceeds slowly a short distance in front, effectively setting the ego vehicle's pace. In the oncoming lane near the right curb, a white flatbed truck is stopped facing the camera but remains within its lane. Farther ahead, a small white van approaches steadily in the oncoming lane. No prominent signals or posted speeds are visible, and there are no obstacles in the ego lane.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe distance and avoid colliding with the stopped vehicle."}
{"id": "train_08234", "split": "train", "clip_key": "titan_clip_142_000384_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_142_000384_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_142_000384_movie_t-3_augB1.jpg", "titan_clip_142_000384_movie_t-2_augB1.jpg", "titan_clip_142_000384_movie_t-1_augB1.jpg", "titan_clip_142_000384_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian.", "environment_perception": "An urban two-way street with one narrow lane per direction and no median, the pavement dry and smooth, carries light traffic as the ego vehicle approaches an intersection with marked crosswalks. Ahead in the middle of the road, a pedestrian in a blue shirt and black pants with a cap, talking on a phone, walks left to right across the lane, directly in the ego path. A small silver car ahead in the same lane slows near the crosswalk, constraining the ego vehicle's pace. Several other pedestrians stand at the curbs on both sides, including at the right crosswalk, close to the roadway. A blue car is parked at the left curb near the camera with a door open near the lane edge.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, black pants, wearing a cap, and talking on a phone, in the middle of the road, crossing the street from the left side of the street to the right side. The driver should yield to the pedestrian to avoid a collision in the crosswalk."}
{"id": "train_08235", "split": "train", "clip_key": "2020-0203-154554_029139_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "029139"}, "frames": ["2020-0203-154554_029139_movie_t-3.jpg", "2020-0203-154554_029139_movie_t-2.jpg", "2020-0203-154554_029139_movie_t-1.jpg", "2020-0203-154554_029139_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs between tall buildings and under an elevated roadway, with smooth dry pavement and heavy, slow-moving traffic. A white semi-truck with a low-bed trailer is directly ahead in the ego lane, slowing due to congestion ahead and constraining the ego vehicle's pace. To the left, a white kei van travels alongside at low speed slightly ahead, maintaining its lane. On the right, another white van moves forward in the adjacent lane and gradually passes the ego vehicle and the truck.", "hazard_reasoning": "A white semi-truck slowing down in front of the ego car, in the ego lane, due to traffic congestion ahead. The truck's reduced speed indicates a queue ahead, so the driver should slow down to maintain a safe following distance and avoid sudden braking."}
{"id": "train_08236", "split": "train", "clip_key": "2020-0204-150838_076384_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "076384"}, "frames": ["2020-0204-150838_076384_movie_t-3.jpg", "2020-0204-150838_076384_movie_t-2.jpg", "2020-0204-150838_076384_movie_t-1.jpg", "2020-0204-150838_076384_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway with three same-direction lanes has dry pavement and slow, bunched traffic. Orange barricade cones close the right shoulder, forming a coned-off side lane beside a barrier. Directly ahead in the ego lane, a black tarp-covered truck slows because of the traffic congestion ahead, constraining the ego vehicle's pace. Slightly ahead in the lane to the left, a white box truck creeps forward and edges past the black truck as the flow compresses. Farther ahead to the right, a small white van proceeds within the coned-off lane at low speed, separated from the main lanes by the cones.", "hazard_reasoning": "A black truck slowing down in the ego lane because of the traffic congestion ahead. Since the truck is decelerating due to congestion, the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_08237", "split": "train", "clip_key": "2020-0204-103442_057270_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "057270"}, "frames": ["2020-0204-103442_057270_movie_t-3.jpg", "2020-0204-103442_057270_movie_t-2.jpg", "2020-0204-103442_057270_movie_t-1.jpg", "2020-0204-103442_057270_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial with two lanes in the same direction runs past apartment buildings; the pavement is dry and in good condition, and traffic is heavy and slow-moving. A black sedan directly ahead in the ego lane slows because of congestion ahead, constraining the ego car's pace. In the adjacent right lane, a queue of cars including a white minivan creeps forward parallel to the ego lane, limiting opportunities to merge. Farther ahead in the same lane, a white van brakes into the line, adding to the backup.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should follow the vehicle ahead to maintain a safe distance and avoid sudden braking in congested conditions."}
{"id": "train_08238", "split": "train", "clip_key": "2020-0203-154554_079876_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "079876"}, "frames": ["2020-0203-154554_079876_movie_t-3.jpg", "2020-0203-154554_079876_movie_t-2.jpg", "2020-0203-154554_079876_movie_t-1.jpg", "2020-0203-154554_079876_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the white sedan.", "environment_perception": "An urban two-way road with two lanes in the ego direction and a painted median passes shops and leafless trees; the pavement is dry and traffic in the ego direction is heavy, moving in stop-and-go waves. A white sedan directly ahead in the ego lane is stopped due to congestion, blocking the path. To the left, a black sedan alongside advances slowly in the adjacent lane, limiting any chance to pass. Farther ahead in the same queue, a small silver van inches forward and brakes repeatedly, setting the pace. Across the painted buffer on the right, sparse oncoming cars move steadily. Low sun glare toward the horizon reduces contrast, and no traffic signals are clearly visible.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, because of traffic congestion ahead. The vehicle's sudden stop indicates slow-moving or halted traffic ahead, so you should stop to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_08239", "split": "train", "clip_key": "2020-0214-102601_033150_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "033150"}, "frames": ["2020-0214-102601_033150_movie_t-3.jpg", "2020-0214-102601_033150_movie_t-2.jpg", "2020-0214-102601_033150_movie_t-1.jpg", "2020-0214-102601_033150_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road runs beneath an elevated expressway, with three same-direction lanes and smooth pavement; traffic is heavy and largely stopped. A white sedan ahead in the ego lane is stopped for a red traffic light and holds the ego vehicle at a standstill. In the left lane a silver van sits slightly ahead and barely creeps, limiting lateral space for any lane change. In the right lane a white hatchback is stopped alongside, matching the queue and keeping the ego boxed in. Farther ahead buses and trucks wait in the jam.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, because of a red traffic light. The driver should stop to avoid a collision with the stationary vehicle at the red signal."}
{"id": "train_08240", "split": "train", "clip_key": "titan_clip_1174_000300_movie", "source": {"subset": "titan", "scenario": "clip_1174", "frame": "000300"}, "frames": ["titan_clip_1174_000300_movie_t-3.jpg", "titan_clip_1174_000300_movie_t-2.jpg", "titan_clip_1174_000300_movie_t-1.jpg", "titan_clip_1174_000300_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrians on left side", "environment_perception": "A narrow urban street with no center line runs between buildings, the pavement smooth and dry, and vehicular traffic is light. On the left near the ego vehicle, a pedestrian in a white shirt and gray pants walks away from the car along a construction barrier because of work on that side, staying close to the edge of the lane. Ahead near the center-right, another pedestrian approaches in the roadway and passes close to the vehicle's path. Farther ahead, several pedestrians stroll and cross in the middle of the street, constraining the vehicle's pace. Temporary fencing on the left and cones by a gated entrance on the right mark the work zone and narrow the corridor.", "hazard_reasoning": "There is a pedestrian wearing gray pants and a white shirt, walking on the left side of the road, away from the ego car, because of construction work on the left. The pedestrian may move further into the vehicle's path due to the construction diversion, so the driver should be cautious."}
{"id": "train_08241", "split": "train", "clip_key": "2020-0129-105040_094875_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "094875"}, "frames": ["2020-0129-105040_094875_movie_t-3.jpg", "2020-0129-105040_094875_movie_t-2.jpg", "2020-0129-105040_094875_movie_t-1.jpg", "2020-0129-105040_094875_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction is divided from oncoming traffic by a low hedge median, the pavement dry and smooth, and traffic is moderate as vehicles approach a signal. A small white truck ahead in the ego lane slows toward a stop because the traffic light is red, constraining the ego car. To the right ahead, a dark sedan in the adjacent same-direction lane also eases off as it nears the intersection. Across the median, oncoming vehicles including a white van and a red hatchback move past steadily without interaction. On the left shoulder, a silver van is parked behind cones and equipment, remaining outside the travel lane.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane, because the light is red. The truck is decelerating for the red light, so you should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_08242", "split": "train", "clip_key": "titan_clip_201_000240_movie", "source": {"subset": "titan", "scenario": "clip_201", "frame": "000240"}, "frames": ["titan_clip_201_000240_movie_t-3.jpg", "titan_clip_201_000240_movie_t-2.jpg", "titan_clip_201_000240_movie_t-1.jpg", "titan_clip_201_000240_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrian", "environment_perception": "A narrow urban shopping street with a single forward lane and no median runs between storefronts; the pavement is smooth and traffic is very light with only a stopped vehicle ahead. A man on the right carrying a handbag steps off the curb and crosses toward the left where there is no marked crosswalk, moving across the ego lane. Farther ahead, a small white delivery truck stands near the left edge, narrowing the passage and potentially constraining the path. On the left sidewalk, pedestrians walk in the same direction near the curb but remain off the roadway.", "hazard_reasoning": "There is a pedestrian carrying a handbag, crossing the street from the right side of the road to the left side, because there is no crosswalk. The pedestrian is crossing unexpectedly without a crosswalk and may step into the vehicle's path, so the driver should yield to prevent a collision."}
{"id": "train_08243", "split": "train", "clip_key": "2020-0207-151349_029423_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "029423"}, "frames": ["2020-0207-151349_029423_movie_t-3.jpg", "2020-0207-151349_029423_movie_t-2.jpg", "2020-0207-151349_029423_movie_t-1.jpg", "2020-0207-151349_029423_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial runs alongside tall buildings and an elevated structure; the asphalt is dry, and traffic flows heavy with a slow stretch ahead. A white box truck directly ahead in the ego lane slows because of congestion up the road, constraining the ego vehicle's pace. To the right, a queue of cars in the adjacent lane creeps forward in the same direction, their tight spacing limiting opportunities to merge. On the left, a small hatchback near the curb moves slowly but stays in its lane. A distant traffic signal is visible through sun glare and appears green.", "hazard_reasoning": "There is a white truck that slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a rear-end collision due to the congestion-induced deceleration."}
{"id": "train_08244", "split": "train", "clip_key": "2020-0131-103016_040900_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "040900"}, "frames": ["2020-0131-103016_040900_movie_t-3.jpg", "2020-0131-103016_040900_movie_t-2.jpg", "2020-0131-103016_040900_movie_t-1.jpg", "2020-0131-103016_040900_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way avenue with smooth pavement approaches a wide zebra crossing at a signalized intersection, and overall traffic is light. A delivery scooter rides ahead slightly left in the ego lane, moving straight and gradually pulling away as the immediate lead vehicle. Farther ahead on the right beyond the intersection, a white truck continues along the curb lane in the same direction, likely to influence right-lane flow after the junction. Several cars are visible far ahead, with a few oncoming vehicles traveling in the opposite lanes and well separated.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08245", "split": "train", "clip_key": "titan_clip_881_000306_movie", "source": {"subset": "titan", "scenario": "clip_881", "frame": "000306"}, "frames": ["titan_clip_881_000306_movie_t-3.jpg", "titan_clip_881_000306_movie_t-2.jpg", "titan_clip_881_000306_movie_t-1.jpg", "titan_clip_881_000306_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "A narrow urban two-way street with shops and trees has smooth pavement and no median, and traffic appears light. A gray delivery truck is parked on the left just ahead of the ego-vehicle, protruding into the lane and constraining the path. An oncoming white van approaches along the right side toward the same pinch point, limiting space for the ego to pass the truck. A person stands near the rear of the parked truck in the roadway, further narrowing clearance. A blue roadside sign on the left shows a left-pointing arrow.", "hazard_reasoning": "There is a gray truck parked, on the left side of the road, in front of the ego-car. The parked truck may obscure pedestrians and oncoming traffic, so the driver should carefully maneuver around it to maintain safety."}
{"id": "train_08246", "split": "train", "clip_key": "2020-0226-140503_012981_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "012981"}, "frames": ["2020-0226-140503_012981_movie_t-3.jpg", "2020-0226-140503_012981_movie_t-2.jpg", "2020-0226-140503_012981_movie_t-1.jpg", "2020-0226-140503_012981_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street has a single through lane for the ego vehicle and a separated right-side red lane divided by a low yellow median; the pavement is dry and traffic is moderate. A green van directly ahead in the ego lane slows as a red vehicle farther ahead cuts into the ego lane, constraining the ego car's pace. A yellow taxi travels alongside to the right within the red lane, moving parallel without merging. Another white van proceeds ahead in the right-side lane near the curb and remains clear of the ego path. An overhead sign shows 40, and a small triangular gore and side entry appear on the left.", "hazard_reasoning": "There is a green van slowing in front of the ego car, in the ego lane, because of a vehicle cutting into the ego lane ahead. The sudden deceleration caused by the merging vehicle increases the risk of a collision, so the driver should slow down to maintain a safe following distance."}
{"id": "train_08247", "split": "train", "clip_key": "titan_clip_886_000174_movie", "source": {"subset": "titan", "scenario": "clip_886", "frame": "000174"}, "frames": ["titan_clip_886_000174_movie_t-3.jpg", "titan_clip_886_000174_movie_t-2.jpg", "titan_clip_886_000174_movie_t-1.jpg", "titan_clip_886_000174_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian", "environment_perception": "The ego vehicle approaches a narrow urban intersection on a single undivided lane with smooth pavement, light traffic, and no signal. Ahead left, a woman in a black T-shirt and blue pants carries an umbrella and walks away along the left side of the intersection, staying near the curb and outside the ego path. Directly ahead, another pedestrian in dark clothing walks away along the center of the side street, occupying the lane the ego would take if proceeding straight. On the left, a delivery truck stands at the corner by the curb, partly blocking sightlines to cross traffic. A red stop sign is posted and a blue sign shows straight and left arrows.", "hazard_reasoning": "There is a woman wearing a black T-shirt and blue pants, carrying an umbrella above her head, and walking on the left side of the intersection, away from the ego car. The driver should be aware of her presence at the intersection to anticipate any unexpected crossing."}
{"id": "train_08248", "split": "train", "clip_key": "2020-0131-135401_074301_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "074301"}, "frames": ["2020-0131-135401_074301_movie_t-3.jpg", "2020-0131-135401_074301_movie_t-2.jpg", "2020-0131-135401_074301_movie_t-1.jpg", "2020-0131-135401_074301_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with smooth pavement and no visible median carries heavy, mostly stopped traffic. A black hatchback directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle in place. A large white box truck slightly ahead to the left remains stationary in its lane, blocking forward sightlines and contributing to the queue. A silver van alongside in the right lane inches forward beside the ego vehicle and limits lateral space as the lanes compress. An overhead sign shows lane-use arrows for through travel and a right turn.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle in the congested lane, as visibility and traffic flow are impeded."}
{"id": "train_08249", "split": "train", "clip_key": "2020-0205-152530_054936_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "054936"}, "frames": ["2020-0205-152530_054936_movie_t-3.jpg", "2020-0205-152530_054936_movie_t-2.jpg", "2020-0205-152530_054936_movie_t-1.jpg", "2020-0205-152530_054936_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with at least three same-direction lanes beside a left-side sidewalk and fence; the dry pavement is in good condition and traffic moves at a moderate, steady pace. A white SUV ahead near the left lanes cruises smoothly and effectively sets the ego vehicle's speed. To its right a silver minivan travels parallel, holding lane and pace without signaling. Farther ahead in the central lanes a small box truck eases into denser flow, causing slight bunching. No salient signals or speed signs are visible, and there are no obstacles.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08250", "split": "train", "clip_key": "2020-0226-101332_044454_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "044454"}, "frames": ["2020-0226-101332_044454_movie_t-3.jpg", "2020-0226-101332_044454_movie_t-2.jpg", "2020-0226-101332_044454_movie_t-1.jpg", "2020-0226-101332_044454_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial passes under an overpass and enters a wide signalized intersection; the pavement looks dry and smooth and traffic is moderate with steady movement in both directions. A small white van ahead in the ego lane drives away toward the intersection, loosely setting the pace. To the right front, an oncoming yellow dump truck moves leftward through the intersection across the scene, briefly occupying the area ahead but not merging into the ego lane. Other cars and small vans travel in adjacent lanes and across the junction with clear gaps. Overhead traffic lights and gantry signs are visible.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. The driver should be aware of this van as it may change lanes or adjust speed unexpectedly, so anticipating its movements is important under this situation."}
{"id": "train_08251", "split": "train", "clip_key": "2020-0205-103411_030273_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "030273"}, "frames": ["2020-0205-103411_030273_movie_t-3.jpg", "2020-0205-103411_030273_movie_t-2.jpg", "2020-0205-103411_030273_movie_t-1.jpg", "2020-0205-103411_030273_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction and a central barrier dividing oncoming lanes has dry, well-marked pavement and light traffic that is queued at a signal. A blue sedan is stopped directly ahead in the ego lane because the traffic light is red, holding the ego vehicle at the line. In the adjacent right lane, a black van is slightly ahead and also stationary at the red, waiting alongside the ego vehicle. On the left sidewalk, two pedestrians walk behind a railing near the crosswalk without approaching the roadway. An overhead signal shows red above the intersection.", "hazard_reasoning": "There is a blue sedan stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to maintain a safe distance and comply with the red signal."}
{"id": "train_08252", "split": "train", "clip_key": "2020-0227-104226_038698_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "038698"}, "frames": ["2020-0227-104226_038698_movie_t-3.jpg", "2020-0227-104226_038698_movie_t-2.jpg", "2020-0227-104226_038698_movie_t-1.jpg", "2020-0227-104226_038698_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane per direction and a solid yellow centerline runs between low-rise buildings; the pavement is clean and traffic is generally light, though the ego lane is halted. A gray van directly ahead in the ego lane is stopped because of traffic congestion ahead, blocking the ego vehicle's path. An oncoming van is stationary near the right curb in the opposite lane and does not encroach on the ego lane. Sidewalks with guardrails line the left, and no salient signals or speed signs are visible.", "hazard_reasoning": "There is a gray van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The van's sudden stop indicates blocked traffic ahead, so the driver should halt to avoid a rear-end collision and maintain safety."}
{"id": "train_08253", "split": "train", "clip_key": "2020-0204-103442_003402_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "003402"}, "frames": ["2020-0204-103442_003402_movie_t-3.jpg", "2020-0204-103442_003402_movie_t-2.jpg", "2020-0204-103442_003402_movie_t-1.jpg", "2020-0204-103442_003402_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in each direction runs between mid-rise buildings, the pavement smooth and dry and traffic moderate as vehicles queue at a signalized intersection. The ego car travels in the right lane of the left-side carriageway, with a white guardrail edging the sidewalk and the opposite carriageway beyond it. A black SUV directly ahead in the ego lane is stopped for a red light at the intersection, constraining the ego vehicle. In the adjacent left lane, a tall white box truck slightly ahead slows to a stop in the same queue. Farther left, a black sedan creeps forward alongside while staying in its lane. Overhead signals show red, and a posted 50 sign is visible; a red-surfaced curb lane section appears on the left.", "hazard_reasoning": "There is a black SUV stopped in front of the ego-car, because of a red light at the intersection. The driver should stop to avoid colliding with the halted vehicle and obey the traffic signal."}
{"id": "train_08254", "split": "train", "clip_key": "titan_clip_381_000306_movie", "source": {"subset": "titan", "scenario": "clip_381", "frame": "000306"}, "frames": ["titan_clip_381_000306_movie_t-3.jpg", "titan_clip_381_000306_movie_t-2.jpg", "titan_clip_381_000306_movie_t-1.jpg", "titan_clip_381_000306_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with block-paved surface lacks lane markings or a median, forming a two-way shared roadway; vehicle traffic is light while foot traffic is moderate. Ahead in the center, a cyclist wearing a gray shirt rides toward the ego vehicle in the middle of the road, reducing available space as they approach. On both sides, pedestrians walk along the edges and one steps from the right sidewalk toward the lane, so they may enter the ego path. At the near left, a white car is stopped partly in the lane by the curb, positioned to merge and further constrict the path. Parked vehicles including a black van on the left, cones, and bicycles outside shops narrow the corridor.", "hazard_reasoning": "There is a cyclist wearing a gray shirt, cycling in the middle of the road, towards the ego car. The driver should slow down to avoid a potential collision with the cyclist occupying the vehicle's path."}
{"id": "train_08255", "split": "train", "clip_key": "2020-0217-110854_004157_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "004157"}, "frames": ["2020-0217-110854_004157_movie_t-3.jpg", "2020-0217-110854_004157_movie_t-2.jpg", "2020-0217-110854_004157_movie_t-1.jpg", "2020-0217-110854_004157_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with a single lane in each direction, no divider, and slightly damp pavement carries slow-moving uphill traffic. A white sedan ahead in the ego lane slows as a large white truck farther ahead slows, constraining the ego vehicle's pace. The large truck ahead continues crawling in the same lane and builds a short queue that dictates the flow. At the left curb, a blue light truck is stopped with its door open while a person climbs into the cab, protruding slightly toward the lane and reducing clearance.", "hazard_reasoning": "A white sedan is slowing in the front of the ego car, in the ego lane, because of a truck slowing ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision under this situation."}
{"id": "train_08256", "split": "train", "clip_key": "titan_clip_884_000156_movie", "source": {"subset": "titan", "scenario": "clip_884", "frame": "000156"}, "frames": ["titan_clip_884_000156_movie_t-3.jpg", "titan_clip_884_000156_movie_t-2.jpg", "titan_clip_884_000156_movie_t-1.jpg", "titan_clip_884_000156_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban narrow two-way back street without a centerline runs straight between tall buildings; the pavement is smooth and traffic is light with no moving vehicles. On the left near the curb, a male pedestrian in a gray shirt and brown trousers carrying a black bag walks away from the ego-vehicle along the roadside, staying at the edge. On the right in the foreground, another pedestrian proceeds slowly in the same direction close to the curb, remaining outside the lane. Farther ahead toward the center-left, a pedestrian moves along the roadway in the same direction and could drift into the travel path. Metal bollards line the right curb and the corridor-like street offers limited lateral clearance.", "hazard_reasoning": "There is a male pedestrian wearing a gray shirt, a brown pair of trousers, and carrying a black bag, walking on the left, away from the ego-car. The pedestrian is walking close to the roadway edge and could step into traffic unexpectedly, so the driver must carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_08257", "split": "train", "clip_key": "titan_clip_785_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_785_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_785_000198_movie_t-3_augB1.jpg", "titan_clip_785_000198_movie_t-2_augB1.jpg", "titan_clip_785_000198_movie_t-1_augB1.jpg", "titan_clip_785_000198_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "In an urban underpass, the ego vehicle proceeds along a narrow single-lane road bordered by concrete walls and fencing. The pavement is dry and smooth, and traffic is light with no other motor vehicles visible. Ahead in the same corridor, a cyclist wearing a blue shirt and grey pants rides toward the ego vehicle along the right side, occupying part of the travel lane and directly opposing the ego path. On the right shoulder against the wall, a pedestrian sits and remains stationary close to the edge but outside the lane. A dark bollard stands near the center-left ahead, locally narrowing the passage.", "hazard_reasoning": "There is a cyclist wearing a blue shirt and grey pants, and cycling toward the ego car. The cyclist is moving into the vehicle's path and may cross in front, so the driver should yield to avoid a collision."}
{"id": "train_08258", "split": "train", "clip_key": "titan_clip_19_000444_movie", "source": {"subset": "titan", "scenario": "clip_19", "frame": "000444"}, "frames": ["titan_clip_19_000444_movie_t-3.jpg", "titan_clip_19_000444_movie_t-2.jpg", "titan_clip_19_000444_movie_t-1.jpg", "titan_clip_19_000444_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with multiple lanes in each direction and no physical median appears dry and well paved; traffic is moderate, with light oncoming flow in the opposite lanes to the right. The ego vehicle travels in the left lane behind a black minivan that slows in the ego lane, constraining the pace. At the left curb just ahead, a delivery truck is stopped with its rear open while a worker handles boxes on the roadway edge, narrowing the usable lane. To the right, a black sedan in the adjacent same-direction lane overtakes and continues straight. Pedestrians are present on both sidewalks but none step into the roadway.", "hazard_reasoning": "There is a black minivan slowing down in the ego lane. This deceleration ahead can reduce the following distance abruptly, so the driver should slow down to maintain a safe gap under this situation."}
{"id": "train_08259", "split": "train", "clip_key": "2020-0218-103119_007819_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "007819"}, "frames": ["2020-0218-103119_007819_movie_t-3.jpg", "2020-0218-103119_007819_movie_t-2.jpg", "2020-0218-103119_007819_movie_t-1.jpg", "2020-0218-103119_007819_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential side street is narrow with no median and smooth pavement, and traffic is light. A white box truck ahead in the ego lane rolls slowly and applies brakes, constraining the ego car's pace as noted. No oncoming vehicles are visible. Parked bicycles and closely spaced utility poles line the right edge and tighten the available roadway, while buildings crowd both sides. No salient signals or posted speeds are seen.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The white truck is decelerating, so the driver should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_08260", "split": "train", "clip_key": "titan_clip_191_000234_movie", "source": {"subset": "titan", "scenario": "clip_191", "frame": "000234"}, "frames": ["titan_clip_191_000234_movie_t-3.jpg", "titan_clip_191_000234_movie_t-2.jpg", "titan_clip_191_000234_movie_t-1.jpg", "titan_clip_191_000234_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban narrow one-lane alley runs between tall buildings with smooth asphalt and no median, and traffic is light with no moving vehicles except a pedestrian. A tall pedestrian wearing a brown T-shirt and blue pants, carrying a handbag, moves from the left side to the right directly in front of the ego-car, crossing the lane and momentarily blocking the path. Parked cars and bicycles line the right side, including a white van ahead at the curb, narrowing the passage.", "hazard_reasoning": "There is a tall pedestrian wearing a brown t-shirt, blue pants and carrying a handbag, crossing the street from the left side to the right side in front of the ego-car. The pedestrian is entering the vehicle's path, creating a hazard that requires the driver to manoeuvre carefully to avoid a collision."}
{"id": "train_08261", "split": "train", "clip_key": "2020-0203-114632_077344_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "077344"}, "frames": ["2020-0203-114632_077344_movie_t-3.jpg", "2020-0203-114632_077344_movie_t-2.jpg", "2020-0203-114632_077344_movie_t-1.jpg", "2020-0203-114632_077344_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop behind the vehicle ahead", "environment_perception": "A suburban two-lane road with a painted centerline and smooth pavement is shown, with the ego car traveling in the left lane; same-direction traffic is queued while oncoming flow remains light. Directly ahead in the ego lane, a silver van is stopped because of traffic congestion ahead, holding the ego vehicle at a standstill. Farther ahead in the same lane, a large construction truck with a hopper is also stopped or creeping, sustaining the backup and limiting progress. Oncoming cars pass steadily in the opposite lane without conflict. A signalized intersection and commercial forecourts appear ahead on the right, and a guardrail lines the left sidewalk; no unusual obstacles are visible.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, because of traffic congestion ahead. The vehicle ahead is halted due to congestion, so the driver should stop to avoid colliding with it."}
{"id": "train_08262", "split": "train", "clip_key": "titan_clip_8_000246_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_8_000246_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_8_000246_movie_t-3_augB1.jpg", "titan_clip_8_000246_movie_t-2_augB1.jpg", "titan_clip_8_000246_movie_t-1_augB1.jpg", "titan_clip_8_000246_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street with brick paving has no center divider and light, slow traffic; the surface looks smooth, with a dark van parked along the right curb and several bicycles stopped on the left. A pedestrian in a white shirt carrying a bag crosses midblock from right to left directly ahead of the ego vehicle, moving across the lane because there is no crosswalk. An oncoming pedicab cyclist approaches near the center-right, pedaling slowly and constricting the available space. Another pedestrian ahead walks along the left edge of the lane away from the camera, close to the travel path.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a bag, crossing the street in front of the ego car, from the right side to the left side, because there is no crosswalk. The driver should slow down due to the unexpected crossing pedestrian directly in the vehicle's path to avoid a collision."}
{"id": "train_08263", "split": "train", "clip_key": "titan_clip_562_000348_movie", "source": {"subset": "titan", "scenario": "clip_562", "frame": "000348"}, "frames": ["titan_clip_562_000348_movie_t-3.jpg", "titan_clip_562_000348_movie_t-2.jpg", "titan_clip_562_000348_movie_t-1.jpg", "titan_clip_562_000348_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with no lane markings or median and smooth asphalt appears calm, with light traffic and no vehicles in view. Two pedestrians ahead on the left, one carrying a handbag and another in a white shirt, walk away from the ego vehicle along the road edge because there is no sidewalk, reducing the available passing space. Another person stands near a storefront on the left by the curb, remaining outside the travel way. Bicycles are parked by a utility pole on the left and shallow steps line the right side, and no traffic signals or regulatory signs are salient.", "hazard_reasoning": "There are two pedestrians, one carrying a handbag and one wearing a white shirt, walking on the left side of the road, away from the ego car, because there is no sidewalk. The driver should slow down to safely navigate around the pedestrians walking on the roadway due to the lack of a sidewalk."}
{"id": "train_08264", "split": "train", "clip_key": "2020-0127-132751_078358_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "078358"}, "frames": ["2020-0127-132751_078358_movie_t-3.jpg", "2020-0127-132751_078358_movie_t-2.jpg", "2020-0127-132751_078358_movie_t-1.jpg", "2020-0127-132751_078358_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with multiple lanes per direction and a painted, partly raised median extends ahead on smooth asphalt; traffic appears light. A gray van drives ahead in the ego lane moving away from the ego car at a steady pace. An oncoming dark car travels in the nearest right-side lane on the opposite carriageway, proceeding straight past the median. Farther ahead, a small white truck continues in our direction but remains well ahead. A blue curbside bicycle lane lines the left edge, and no hazards are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08265", "split": "train", "clip_key": "2020-0221-115122_030459_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "030459"}, "frames": ["2020-0221-115122_030459_movie_t-3.jpg", "2020-0221-115122_030459_movie_t-2.jpg", "2020-0221-115122_030459_movie_t-1.jpg", "2020-0221-115122_030459_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial runs under an elevated expressway, with multiple same-direction lanes and a bollard-separated lane along the left; the pavement is smooth and the flow is moderate but bunching ahead. A white van directly ahead in the ego lane slows as it reaches a short queue, which constrains the ego-car's pace because of traffic congestion ahead. To the right, a silver van slightly ahead continues straight at a similar speed, making a rightward lane change impractical. Farther ahead in the right lane, a black SUV proceeds toward the forming queue with the general flow. Blue direction signs ahead indicate straight travel while overhead guide signs hang beneath the viaduct.", "hazard_reasoning": "There is a white van slowing down in front of the ego-car, because of traffic congestion ahead. The driver should slow down to avoid a rear-end collision due to the van's reduced speed in congested traffic."}
{"id": "train_08266", "split": "train", "clip_key": "2020-0225-145150_034384_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "034384"}, "frames": ["2020-0225-145150_034384_movie_t-3.jpg", "2020-0225-145150_034384_movie_t-2.jpg", "2020-0225-145150_034384_movie_t-1.jpg", "2020-0225-145150_034384_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane two-way road with no physical median approaches an intersection; the pavement is smooth and traffic is moderate, compressing near the junction. A blue auto-rickshaw is directly ahead in the ego lane, slowing because congestion forms ahead and it constrains the ego car's pace. A small green truck runs ahead slightly left in the adjacent same-direction lane, continuing straight at a similar speed and remaining parallel without cutting in. To the right, a white sedan advances in the neighboring lane, overtaking slowly while staying clear of the ego lane.", "hazard_reasoning": "There is a blue auto-rickshaw slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. Maintain a safe distance and follow the auto-rickshaw to adapt to the slowing traffic and avoid sudden braking."}
{"id": "train_08267", "split": "train", "clip_key": "titan_clip_554_000390_movie", "source": {"subset": "titan", "scenario": "clip_554", "frame": "000390"}, "frames": ["titan_clip_554_000390_movie_t-3.jpg", "titan_clip_554_000390_movie_t-2.jpg", "titan_clip_554_000390_movie_t-1.jpg", "titan_clip_554_000390_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian.", "environment_perception": "An urban two-way road with one lane each direction curves right past a hatched bus stop bay; the pavement is smooth and traffic is light. A pedestrian wearing a cap crosses ahead from the left to the right in front of the ego car toward the bus stop, briefly occupying the ego lane and constraining the vehicle's pace. A small black car ahead near the left edge is stopped partly in the ego lane, narrowing the passage the ego must take.", "hazard_reasoning": "A pedestrian wearing a cap is crossing the street, in front of the ego car, to the right side. You should yield because the pedestrian is entering your path at the crosswalk."}
{"id": "train_08268", "split": "train", "clip_key": "2020-0225-102455_053098_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "053098"}, "frames": ["2020-0225-102455_053098_movie_t-3.jpg", "2020-0225-102455_053098_movie_t-2.jpg", "2020-0225-102455_053098_movie_t-1.jpg", "2020-0225-102455_053098_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of the black van changing lanes", "environment_perception": "An urban multilane arterial with two same-direction lanes and a barrier-separated side lane curves gently right beside an elevated expressway. Pavement is smooth with red-painted sections, and traffic is moderate and steady. Directly ahead, a black van changes from the ego lane to the left lane in front of us, moving over gradually and briefly constraining our pace. Farther ahead in the left lane, a tall white van slows among a short queue, shaping the flow the black van merges into. Along the far-left curb, a red-and-white mini truck stands with other parked vehicles, narrowing space near that edge.", "hazard_reasoning": "There is a black van lane changing in front of the ego car, from the ego lane to the left lane. The van may merge into the ego lane quickly, requiring the driver to be aware to maintain a safe distance and avoid a potential side collision."}
{"id": "train_08269", "split": "train", "clip_key": "2020-0205-152530_033369_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "033369"}, "frames": ["2020-0205-152530_033369_movie_t-3.jpg", "2020-0205-152530_033369_movie_t-2.jpg", "2020-0205-152530_033369_movie_t-1.jpg", "2020-0205-152530_033369_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane boulevard with good pavement and a planted median carries light to moderate same-direction traffic. Directly ahead in the ego lane, a white box truck accelerates away, opening a growing gap. In the right adjacent lane, a small white van runs slightly ahead and continues straight at a steady speed. In the left lane, a white wagon proceeds parallel a little ahead of the truck, maintaining its lane. Buildings, trees, and an overhead walkway border the road, and no signals or hazards stand out.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08270", "split": "train", "clip_key": "2020-0226-140503_082018_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "082018"}, "frames": ["2020-0226-140503_082018_movie_t-3.jpg", "2020-0226-140503_082018_movie_t-2.jpg", "2020-0226-140503_082018_movie_t-1.jpg", "2020-0226-140503_082018_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes runs between mid-rise buildings, the asphalt wet under overcast skies; traffic is heavy and mostly stop-and-go. Directly ahead in the ego lane a white hatchback is stopped because congestion blocks the lane, holding the ego vehicle. In the adjacent left lane a large box truck slightly ahead creeps forward with the queue and partially blocks the left-side view. In the right lane a white sedan draws level and inches ahead, limiting lateral space beside the ego car. Farther ahead vehicles are tightly bunched across all lanes, and no oncoming traffic is visible in this scene.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. Stopping will help maintain a safe distance and prevent a collision with the halted vehicle."}
{"id": "train_08271", "split": "train", "clip_key": "2020-0217-110854_047212_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "047212"}, "frames": ["2020-0217-110854_047212_movie_t-3.jpg", "2020-0217-110854_047212_movie_t-2.jpg", "2020-0217-110854_047212_movie_t-1.jpg", "2020-0217-110854_047212_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road under an elevated expressway has two lanes in the ego direction with a painted shoulder on the left, smooth pavement, and light, steady traffic. A black van directly ahead in the ego lane drives away from the ego car, setting the immediate pace while the gap slowly widens. A white car farther ahead in the right adjacent lane continues straight at similar speed, relevant only as adjacent traffic. Another small car is visible even farther ahead in lane, moving with the flow and not affecting the ego path. No signals or unusual signage stand out, and no pedestrians, cyclists, or obstacles appear.", "hazard_reasoning": "There is a black van driving in front of, and away from the ego car, in the ego lane. You should follow the vehicle ahead to maintain a safe distance in case it brakes suddenly."}
{"id": "train_08272", "split": "train", "clip_key": "2020-0227-104226_095668_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "095668"}, "frames": ["2020-0227-104226_095668_movie_t-3.jpg", "2020-0227-104226_095668_movie_t-2.jpg", "2020-0227-104226_095668_movie_t-1.jpg", "2020-0227-104226_095668_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction and a metal median barrier shows smooth pavement and moderate, steady flow. The ego vehicle travels in the left lane while oncoming traffic streams along the opposite side of the barrier to the right. A dark hatchback ahead in the ego lane drives away at a steady pace, effectively setting the ego car's following speed. In the adjacent right same-direction lane a white van runs slightly ahead and continues straight without merging. Farther ahead, a box truck leads several vehicles in both lanes, constraining the overall pace. No salient signals are visible, and the roadside is lined with guardrails and fencing beside buildings.", "hazard_reasoning": "There's a red sedan driving away from the ego car, in the ego lane. Because the sedan ahead may brake suddenly, the driver should maintain a safe following distance and follow the vehicle ahead."}
{"id": "train_08273", "split": "train", "clip_key": "2020-0210-142719_005358_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "005358"}, "frames": ["2020-0210-142719_005358_movie_t-3.jpg", "2020-0210-142719_005358_movie_t-2.jpg", "2020-0210-142719_005358_movie_t-1.jpg", "2020-0210-142719_005358_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane in each direction approaches a railway overpass, marked by double solid centerlines and smooth pavement; traffic is light. A white car ahead in the ego lane continues straight toward the underpass at a steady speed, setting the pace. In the oncoming lane a silver van approaches slowly near the bridge while remaining in its lane. Along the right curb of the oncoming side several cars are parked, narrowing clearance for opposing traffic. A pedestrian on the left sidewalk walks along the fence away from the roadway. No traffic signals are visible near the overpass.", "hazard_reasoning": "No hazards detected; driving conditions are clear and unobstructed."}
{"id": "train_08274", "split": "train", "clip_key": "2020-0214-145407_011480_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "011480"}, "frames": ["2020-0214-145407_011480_movie_t-3.jpg", "2020-0214-145407_011480_movie_t-2.jpg", "2020-0214-145407_011480_movie_t-1.jpg", "2020-0214-145407_011480_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane street with no physical median approaches a signalized intersection; the pavement looks smooth and dry, and traffic is moderate but stopped at the light. A minivan directly ahead in the ego lane is stationary at the stop line for the light, holding the ego vehicle. In the adjacent right lane, a white sedan is also stopped slightly ahead, waiting through the same phase. On the left sidewalk near the corner, two pedestrians stand by the crosswalk without entering the roadway. The overhead signal facing the ego direction shows yellow as the phase changes. Beyond the junction on the right, cones and barriers mark a small roadwork area that narrows the curbside space.", "hazard_reasoning": "There is a blue van stopped in the ego lane because of a red traffic light ahead. The driver should stop to avoid a collision with the stopped van and obey the red light."}
{"id": "train_08275", "split": "train", "clip_key": "2020-0220-151845_052829_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "052829"}, "frames": ["2020-0220-151845_052829_movie_t-3.jpg", "2020-0220-151845_052829_movie_t-2.jpg", "2020-0220-151845_052829_movie_t-1.jpg", "2020-0220-151845_052829_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated two-lane roadway with concrete side barriers runs beneath an overhead structure; the pavement is dry and traffic is moderate and gradually slowing. The ego vehicle follows a pink flatbed truck directly ahead in the left ego lane, which decelerates because of congestion further ahead and therefore sets the ego car's pace. To the right, a black SUV in the adjacent lane runs slightly ahead at a steady speed, remaining alongside as the road continues under the viaduct. Farther ahead in the right lane, a small white van moves away with the flow. No prominent signals or signs are visible, and no pedestrians or cyclists appear.", "hazard_reasoning": "There is a pink truck slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a rear-end collision due to reduced traffic flow."}
{"id": "train_08276", "split": "train", "clip_key": "2020-0131-135401_016042_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "016042"}, "frames": ["2020-0131-135401_016042_movie_t-3.jpg", "2020-0131-135401_016042_movie_t-2.jpg", "2020-0131-135401_016042_movie_t-1.jpg", "2020-0131-135401_016042_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road approaches a signalized intersection with smooth pavement and moderate flow as traffic moves off from a short queue. A black van directly ahead in the ego lane rolls forward under the green light and sets the pace. In the adjacent right lane a white car slightly ahead accelerates straight through the junction. A motorcyclist to the right of the ego vehicle advances alongside and then pulls ahead in the right lane, potentially edging into the ego lane after the intersection. The signal ahead shows green, and roadside signs indicate straight-ahead movement with turn restrictions.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08277", "split": "train", "clip_key": "titan_clip_367_000252_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_367_000252_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_367_000252_movie_t-3_augB1.jpg", "titan_clip_367_000252_movie_t-2_augB1.jpg", "titan_clip_367_000252_movie_t-1_augB1.jpg", "titan_clip_367_000252_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with no center line and smooth asphalt runs between shops, and traffic is light. Ahead, a small delivery van is stopped at the right curb with its rear open, protruding slightly into the lane and constraining the path. In front of the ego car, a man wearing a white shirt and black pants walks from the right side of the street to the left, crossing the vehicle's path. Another person stands on the right sidewalk near the van, staying at the curb. Cones, a hand truck, and parked bicycles cluster near the van and along the curbs, creating minor roadside obstructions.", "hazard_reasoning": "There is a man wearing a white shirt and black pants and walking from the right side of the street to the left side of the street, in front of the ego car. The pedestrian is crossing directly in front of the vehicle, so the driver should slow down to avoid a collision."}
{"id": "train_08278", "split": "train", "clip_key": "titan_clip_1331_000360_movie", "source": {"subset": "titan", "scenario": "clip_1331", "frame": "000360"}, "frames": ["titan_clip_1331_000360_movie_t-3.jpg", "titan_clip_1331_000360_movie_t-2.jpg", "titan_clip_1331_000360_movie_t-1.jpg", "titan_clip_1331_000360_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrians", "environment_perception": "A narrow urban shopping street with paver blocks and no divider stretches toward an underpass, with storefronts tight to the roadway; traffic is light and slow. A small flatbed truck ahead in the same lane creeps toward the underpass and effectively sets the pace. From the left storefront area, a pedestrian in a light top steps into the street and begins crossing toward the right near the ego path. Along the right edge, two pedestrians walk toward the ego vehicle, one carrying a handbag and the other in a white T-shirt, staying close to the curb but near the lane. Parked bicycles and displays on the right encroach slightly into the roadway, narrowing the passage.", "hazard_reasoning": "There are two pedestrians walking toward the ego car on the right side of the road, wearing a handbag and a white t-shirt. Since the pedestrians are approaching the vehicle path from the right, the driver should manoeuvre carefully to avoid a potential collision."}
{"id": "train_08279", "split": "train", "clip_key": "2020-0129-105040_071521_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "071521"}, "frames": ["2020-0129-105040_071521_movie_t-3.jpg", "2020-0129-105040_071521_movie_t-2.jpg", "2020-0129-105040_071521_movie_t-1.jpg", "2020-0129-105040_071521_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban residential street with a narrow bidirectional carriageway curves right, marked by solid centerlines on smooth pavement, and traffic is light. Ahead in the ego lane, a white minivan is stopped for a red traffic signal, temporarily holding the ego car. In the opposite lane, a dark sedan approaches and continues through the bend without encroaching. Farther ahead on the opposite side, a small white van moves away near the junction. Overhead signals at the intersection ahead show red for the ego direction. Wrapped scaffolding on the left and a fenced work site on the right line the roadside but do not intrude into the lane.", "hazard_reasoning": "There is a white minivan stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver should stop to avoid a rear-end collision with the stationary minivan at the red light."}
{"id": "train_08280", "split": "train", "clip_key": "titan_clip_284_000258_movie", "source": {"subset": "titan", "scenario": "clip_284", "frame": "000258"}, "frames": ["titan_clip_284_000258_movie_t-3.jpg", "titan_clip_284_000258_movie_t-2.jpg", "titan_clip_284_000258_movie_t-1.jpg", "titan_clip_284_000258_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrian", "environment_perception": "An urban two-way street with one narrow lane in each direction has no median and dry, intact pavement; traffic is light. A gray box truck travels ahead in the ego lane at low speed, setting the pace. On the left side near the curb, a pedestrian wearing a white shirt and black pants and carrying a white bag walks away from the ego vehicle along the roadside. Another pedestrian stands at the left edge by a storefront, remaining on the sidewalk. Orange cones and bollards line the right sidewalk beside trees, marking the edge but not intruding into the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, wearing black pants, and carrying a white bag, walking on the left side of the road, away from the ego car. The pedestrian could suddenly step into the traffic lane, so the driver should exercise caution."}
{"id": "train_08281", "split": "train", "clip_key": "2020-0226-140503_028226_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "028226"}, "frames": ["2020-0226-140503_028226_movie_t-3.jpg", "2020-0226-140503_028226_movie_t-2.jpg", "2020-0226-140503_028226_movie_t-1.jpg", "2020-0226-140503_028226_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the stopped van ahead", "environment_perception": "An urban two-way street with one lane each direction runs between midrise buildings, the pavement smooth and slightly wet, and traffic flow light to moderate. Ahead on the left at a side street, a blue van is stopped, waiting to turn onto the ego car's road and potentially enter the ego lane. A small white van stands stationary along the left curb near shops without encroaching on the travel lane. Several oncoming cars move steadily in the opposite lane, forming a stream that limits gaps for turns.", "hazard_reasoning": "There is a blue van stopped on the left side of the road, because it is waiting to turn onto the ego car's road. Be aware of the stopped blue van as it may merge into your path without warning."}
{"id": "train_08282", "split": "train", "clip_key": "2020-0207-101955_017337_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "017337"}, "frames": ["2020-0207-101955_017337_movie_t-3.jpg", "2020-0207-101955_017337_movie_t-2.jpg", "2020-0207-101955_017337_movie_t-1.jpg", "2020-0207-101955_017337_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane intersection with smooth pavement and no median comes into view, and traffic is moderate. Ahead in the ego lane, a white truck with a green tarp drives away from the ego car and continues straight, setting the pace. To the right ahead, a silver van in the opposing lanes moves toward the camera through the junction, passing ahead without entering the ego lane. Farther right, a yellow taxi also advances in the opposite direction through the intersection. Overhead traffic signals and roadside signs are visible above the center of the junction.", "hazard_reasoning": "There is a white truck with a green tarp driving in the ego lane away from the ego car. The truck may obscure the view of the red traffic light ahead, requiring the driver to be aware of its position to ensure a safe stop."}
{"id": "train_08283", "split": "train", "clip_key": "2020-0227-104226_054576_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054576"}, "frames": ["2020-0227-104226_054576_movie_t-3.jpg", "2020-0227-104226_054576_movie_t-2.jpg", "2020-0227-104226_054576_movie_t-1.jpg", "2020-0227-104226_054576_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to oncoming vehicle", "environment_perception": "In an urban district, the ego vehicle travels on a two-way, one-lane-each-direction road with a solid centerline and smooth pavement, and traffic is moderate as it nears a signalized crosswalk. A black sedan in the oncoming lane approaches toward the ego car and passes close to the centerline while continuing straight. Ahead in the ego lane, a silver hatchback proceeds slowly over the zebra crossing, briefly setting the pace. Farther ahead, additional oncoming cars move steadily toward the camera in their lane, maintaining the opposing flow. Two pedestrians stand on the right sidewalk near the crosswalk, and no obstacles are visible.", "hazard_reasoning": "There is a black sedan driving in the oncoming lane, toward the ego car. The driver should yield to the oncoming vehicle to avoid a potential head-on collision under this situation."}
{"id": "train_08284", "split": "train", "clip_key": "2020-0210-101957_031267_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "031267"}, "frames": ["2020-0210-101957_031267_movie_t-3.jpg", "2020-0210-101957_031267_movie_t-2.jpg", "2020-0210-101957_031267_movie_t-1.jpg", "2020-0210-101957_031267_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane road with painted lane lines and no physical median runs under an elevated roadway; the pavement is dry and traffic is heavy and mostly stopped. A black van directly ahead in the ego lane stands still, holding the ego car due to congestion. To the left, two small dump trucks queue in the adjacent same-direction lane and remain halted beside the ego vehicle. To the right, a silver van in the neighboring lane creeps forward past the ego position in the slow jam. A traffic signal is mounted ahead near the underpass, but its aspect is not clearly visible.", "hazard_reasoning": "There is a black van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver must stop promptly to avoid rear-ending the stationary vehicle."}
{"id": "train_08285", "split": "train", "clip_key": "2020-0220-151845_036200_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "036200"}, "frames": ["2020-0220-151845_036200_movie_t-3.jpg", "2020-0220-151845_036200_movie_t-2.jpg", "2020-0220-151845_036200_movie_t-1.jpg", "2020-0220-151845_036200_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial beneath an elevated expressway has two same-direction lanes marked with chevrons, smooth pavement, and moderate flow that eases to a slow pace ahead. In the ego lane, a flatbed truck carrying a covered load slows as it joins a short queue, consistent with congestion forming ahead. In the adjacent right lane slightly farther forward, a white van cruises at a similar slow speed, limiting room for an immediate lane change. On the far right by the curb, a small silver car is parked and stationary outside the travel lane. No unusual signage is prominent, and visibility is clear along the straight corridor.", "hazard_reasoning": "There is a red truck slowing down in the ego lane, because there is traffic congestion ahead. The driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_08286", "split": "train", "clip_key": "2020-0129-105040_058158_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "058158"}, "frames": ["2020-0129-105040_058158_movie_t-3.jpg", "2020-0129-105040_058158_movie_t-2.jpg", "2020-0129-105040_058158_movie_t-1.jpg", "2020-0129-105040_058158_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential scene shows a narrow two-way road without a median, descending slightly with smooth asphalt and red shoulder strips; traffic is light with no vehicles immediately nearby. No pedestrians or cyclists are visible near the ego lane, and the path ahead is clear. A do-not-enter sign stands on the right for a side street, and a Japanese roadside sign on the left warns to slow down, with a convex mirror aiding corner visibility. Green bollards and fencing narrow the left edge, and utility poles line both sides, but no obstacles encroach on the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08287", "split": "train", "clip_key": "titan_clip_720_000504_movie", "source": {"subset": "titan", "scenario": "clip_720", "frame": "000504"}, "frames": ["titan_clip_720_000504_movie_t-3.jpg", "titan_clip_720_000504_movie_t-2.jpg", "titan_clip_720_000504_movie_t-1.jpg", "titan_clip_720_000504_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "be aware of the pedestrian ahead", "environment_perception": "An urban narrow two-way street with no center line and smooth asphalt runs between low-rise shops; traffic is very light with no oncoming vehicles as the ego car proceeds straight. On the right sidewalk near a shop entrance, a pedestrian in a black sweater stands talking with another person, remaining by the storefront and outside the lane. Slightly ahead along the right edge, a person walks a bicycle away from the camera in the gutter area, close to the ego lane and shaping the available space. Cones and short bollards line the left sidewalk but do not intrude into the roadway.", "hazard_reasoning": "There is a pedestrian wearing a black sweater and standing on the right side of the road, because she is talking to another person. The pedestrian could step into the roadway unexpectedly, so drivers should be aware of her presence."}
{"id": "train_08288", "split": "train", "clip_key": "titan_clip_454_000138_movie", "source": {"subset": "titan", "scenario": "clip_454", "frame": "000138"}, "frames": ["titan_clip_454_000138_movie_t-3.jpg", "titan_clip_454_000138_movie_t-2.jpg", "titan_clip_454_000138_movie_t-1.jpg", "titan_clip_454_000138_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of cones ahead", "environment_perception": "A narrow urban road without a centerline runs between a stone wall on the left and buildings on the right; the pavement is smooth and traffic is light. A white car ahead in the ego lane proceeds slowly along the middle of the road, setting the pace. Farther ahead on the right edge, a pedestrian walks away along the shoulder, remaining outside the lane. A speed-limit sign stands on the left. A row of traffic cones on the left and temporary rail barriers on the right mark the edges and slightly narrow the passage.", "hazard_reasoning": "There are traffic cones on the left side. These cones may indicate upcoming lane restrictions or roadworks, so the driver should be aware of the cones ahead and maintain safe clearance."}
{"id": "train_08289", "split": "train", "clip_key": "2020-0226-140503_039027_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "039027"}, "frames": ["2020-0226-140503_039027_movie_t-3.jpg", "2020-0226-140503_039027_movie_t-2.jpg", "2020-0226-140503_039027_movie_t-1.jpg", "2020-0226-140503_039027_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with fresh dark pavement curves gently right, separated from oncoming traffic by painted islands and cones, and traffic moves at a moderate pace. Ahead left, a white van cuts right into the ego lane to maneuver around a parked truck, briefly narrowing the gap and pacing the ego vehicle. Farther ahead in the same direction, several cars travel steadily along the bend without lane changes. On the right side of the roadway, oncoming cars pass through the curve and remain separated by the channelized markings. A posted 40 sign stands on the left, and both curbs are lined with construction cones; no workers are visible.", "hazard_reasoning": "A white van in the left lane is cutting in to the ego lane to maneuver around a parked truck. The van's unexpected merge poses a collision risk, so the driver should slow down to maintain a safe following distance."}
{"id": "train_08290", "split": "train", "clip_key": "titan_clip_620_000492_movie", "source": {"subset": "titan", "scenario": "clip_620", "frame": "000492"}, "frames": ["titan_clip_620_000492_movie_t-3.jpg", "titan_clip_620_000492_movie_t-2.jpg", "titan_clip_620_000492_movie_t-1.jpg", "titan_clip_620_000492_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane each direction and no median is shown; the pavement looks smooth and traffic is light. Green cones mark a left-side bike strip, and a white truck is parked partly in the oncoming lane at the right curb, narrowing the roadway. Ahead in the middle of the roadway, a man wearing a black T-shirt, black shorts, and a cap walks toward the ego vehicle while looking at his phone, occupying the travel path because the parked vehicle blocks the curbside. At the right curb beside the truck, two pedestrians walk forward along the tight gap and may edge into the lane to pass it. An overhead blue pedestrian crossing sign is visible ahead.", "hazard_reasoning": "There is a man, wearing a black t-shirt, black shorts, and a cap, looking into his phone and walking in the middle of the road, toward the ego car, because of the parked vehicle. The pedestrian is distracted and entering the vehicle's path due to the sidewalk obstruction, increasing the risk of collision if the driver does not reduce speed."}
{"id": "train_08291", "split": "train", "clip_key": "titan_clip_4_000312_movie", "source": {"subset": "titan", "scenario": "clip_4", "frame": "000312"}, "frames": ["titan_clip_4_000312_movie_t-3.jpg", "titan_clip_4_000312_movie_t-2.jpg", "titan_clip_4_000312_movie_t-1.jpg", "titan_clip_4_000312_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the crossing pedestrian", "environment_perception": "An urban shopping street features a narrow single-lane brick-paved road with no centerline; the surface is clean and traffic is light and slow. Ahead, a pedestrian in a blue jacket crosses from the right to the left across the ego vehicle's path as the roadway is clear. Far ahead in the same direction, a small white car proceeds slowly near the center of the lane, moderated by the pedestrian activity. Near the left edge close to the camera, another pedestrian walks along the curb toward the camera while keeping to the side. Scooters and storefront displays line the left margin, slightly narrowing the usable lane.", "hazard_reasoning": "a pedestrian wearing a blue jacket with black pant is crossing from the right to the left side of the street because of the clear road. This pedestrian may enter the vehicle's path unexpectedly, so the driver must be aware of the crossing pedestrian to avoid collision."}
{"id": "train_08292", "split": "train", "clip_key": "titan_clip_868_000228_movie", "source": {"subset": "titan", "scenario": "clip_868", "frame": "000228"}, "frames": ["titan_clip_868_000228_movie_t-3.jpg", "titan_clip_868_000228_movie_t-2.jpg", "titan_clip_868_000228_movie_t-1.jpg", "titan_clip_868_000228_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street is narrow and single-lane with no center line, flanked by shops; the pavement is worn but intact, and traffic is light and slow. A white mini-van ahead in the ego lane crawls near the middle of the roadway, limiting the ego vehicle's pace. On the right side near the curb, a pedestrian wearing a blue shirt walks toward the ego car along the edge and may enter the lane. Farther ahead, a small group of pedestrians in the right half of the roadway also walks toward the camera, encroaching on the path around the van.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and walking toward the ego car, on the right side of the road. The pedestrian is approaching the vehicle's path, so the driver should slow down to avoid a potential collision."}
{"id": "train_08293", "split": "train", "clip_key": "titan_clip_609_000252_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_609_000252_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_609_000252_movie_t-3_augB1.jpg", "titan_clip_609_000252_movie_t-2_augB1.jpg", "titan_clip_609_000252_movie_t-1_augB1.jpg", "titan_clip_609_000252_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street with stone-paved surface runs between buildings, with no median and a single lane in each direction; traffic is light and mostly static, with many vehicles parked along the left curb. A pedestrian wearing black pants and a backpack crosses ahead from the left to the right, moving across the ego vehicle's path. A white van is parked close on the left foreground, protruding slightly and narrowing the lane. Farther ahead several blue trucks remain parked along the left side, keeping the usable lane tight but passable. No traffic signals or speed signs are evident, and no moving same-direction or oncoming vehicles appear.", "hazard_reasoning": "There is a pedestrian wearing black pants and a backpack crossing the street in front of the ego car, from the left to the right side of the road. The pedestrian is moving into the vehicle's path and may be obscured by the parked truck, so the driver should slow down to safely yield and avoid a collision."}
{"id": "train_08294", "split": "train", "clip_key": "titan_clip_549_000192_movie", "source": {"subset": "titan", "scenario": "clip_549", "frame": "000192"}, "frames": ["titan_clip_549_000192_movie_t-3.jpg", "titan_clip_549_000192_movie_t-2.jpg", "titan_clip_549_000192_movie_t-1.jpg", "titan_clip_549_000192_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial back street appears with a single narrow two-way lane, no median, and mostly smooth pavement, and overall movement is light and slow. In the middle ahead, a woman in a white T-shirt and brown shorts carrying a backpack walks away from the ego vehicle along the center of the roadway, occupying the path. A few pedestrians farther ahead also walk in the same direction near the center, reducing the available lane. From the right side close to the camera, an oncoming cyclist pedals toward the ego along the curb and passes near the vehicle's path.", "hazard_reasoning": "There is a woman wearing a white t-shirt and brown shorts, carrying a backpack, and walking in the middle of the road, away from the ego car. The driver should slow down to avoid colliding with the pedestrian in the roadway."}
{"id": "train_08295", "split": "train", "clip_key": "titan_clip_229_000228_movie", "source": {"subset": "titan", "scenario": "clip_229", "frame": "000228"}, "frames": ["titan_clip_229_000228_movie_t-3.jpg", "titan_clip_229_000228_movie_t-2.jpg", "titan_clip_229_000228_movie_t-1.jpg", "titan_clip_229_000228_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the stopped vehicle", "environment_perception": "A narrow urban commercial street with block-paved surface forms a single undivided lane, and traffic is light. A black sedan is stopped in the ego lane directly ahead, blocking the path and controlling the ego car's pace. Several pedestrians ahead on the right sidewalk walk past storefronts, one close to the curb beside the sedan and adjacent to the travel lane, so they may enter the lane. Additional pedestrians are visible farther ahead along the street but keep to the sides. A 30 km/h speed-limit sign stands on the left. Orange traffic cones line the left curb and bicycles are parked along the right, slightly narrowing the roadway.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, in front of the ego car. The sedan is blocking the lane and could cause a collision if the driver does not adjust, so the driver should manoeuvre around the stopped vehicle."}
{"id": "train_08296", "split": "train", "clip_key": "titan_clip_704_000498_movie", "source": {"subset": "titan", "scenario": "clip_704", "frame": "000498"}, "frames": ["titan_clip_704_000498_movie_t-3.jpg", "titan_clip_704_000498_movie_t-2.jpg", "titan_clip_704_000498_movie_t-1.jpg", "titan_clip_704_000498_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban backstreet runs between buildings, a narrow single-lane road with no center divider and smooth asphalt; traffic is light and mostly pedestrian. On the left foreground, a man walks toward the ego-vehicle along the edge of the carriageway and may step into the lane. Ahead near the middle of the lane, two pedestrians walk away from the vehicle, partially occupying the path and slowing progress. Farther ahead at the open T-intersection, a white minibus moves across from left to right on the cross street. A blue no-parking sign stands on the right, with cones and vending machines along the curb.", "hazard_reasoning": "There are no immediate hazards visible, so the driver can proceed as normal."}
{"id": "train_08297", "split": "train", "clip_key": "2020-0203-154554_039495_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "039495"}, "frames": ["2020-0203-154554_039495_movie_t-3.jpg", "2020-0203-154554_039495_movie_t-2.jpg", "2020-0203-154554_039495_movie_t-1.jpg", "2020-0203-154554_039495_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway as the ego car approaches a wide signalized intersection on smooth pavement with moderate, steadily moving traffic. A white box truck ahead in the ego lane continues straight through the junction and gradually pulls away from the camera. To the right, a small light pickup in the adjacent lane proceeds forward slightly ahead, tracking parallel to the ego path and narrowing lateral space. On the left corner, several pedestrians and bicyclists wait at the curb by the crosswalk and remain outside the roadway. Large bridge columns and a pedestrian footbridge span the road and partially block the far-right view beyond the intersection.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08298", "split": "train", "clip_key": "2020-0203-114632_005514_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_005514_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_005514_movie_t-3_augB1.jpg", "2020-0203-114632_005514_movie_t-2_augB1.jpg", "2020-0203-114632_005514_movie_t-1_augB1.jpg", "2020-0203-114632_005514_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "An urban two-way street with one lane per direction curves gently right, divided by a solid double yellow centerline on sound asphalt, and traffic is light to moderate near the bend. Ahead in the ego lane, a motorcyclist rides away at low speed, slightly constraining our pace. Farther ahead in the same lane, a small white van proceeds steadily through the curve. On the right in the oncoming lane, a bus stands at a stop by the curb and remains stationary. Along the left edge of our lane, orange traffic cones and rope cordon off space for a parked construction truck, and the cones indicate a parked construction vehicle that narrows the usable lane.", "hazard_reasoning": "There is an orange traffic cone, on the left side of the road, indicating a parked construction vehicle. The cones and truck partially block the lane, requiring the driver to carefully manoeuvre to avoid collision."}
{"id": "train_08299", "split": "train", "clip_key": "2020-0129-144857_017887_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "017887"}, "frames": ["2020-0129-144857_017887_movie_t-3.jpg", "2020-0129-144857_017887_movie_t-2.jpg", "2020-0129-144857_017887_movie_t-1.jpg", "2020-0129-144857_017887_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging vehicle", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs straight between tall buildings; the pavement looks smooth and traffic flows at a moderate pace. A black sedan slightly ahead to the left moves right across the dashed line, cutting into the ego lane and reducing the headway. A tall black van directly ahead in the ego lane continues straight at a steady pace. Farther ahead, several cars in the center and left lanes proceed straight with normal gaps. A fenced sidewalk borders the curb on the right, with pedestrians staying on the sidewalks.", "hazard_reasoning": "There is a black sedan in front of the ego car, cutting in to the ego lane from the left lane. Driver should be aware because the unexpected merge could reduce your following distance and require a sudden maneuver."}
{"id": "train_08300", "split": "train", "clip_key": "2020-0129-105040_002850_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "002850"}, "frames": ["2020-0129-105040_002850_movie_t-3.jpg", "2020-0129-105040_002850_movie_t-2.jpg", "2020-0129-105040_002850_movie_t-1.jpg", "2020-0129-105040_002850_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the construction worker", "environment_perception": "An urban arterial with a single lane in each direction is divided by a low curbed median; the pavement is smooth and traffic is light in the ego direction while oncoming flow is moderate. Far ahead in the ego lane, a white box truck proceeds steadily and is the next vehicle ahead. To the right beyond the median, a black taxi and other cars approach in the oncoming lane and continue past without affecting the ego path. On the left, a narrow side bay has a few stopped vehicles near shops but they remain outside the travel lane. No construction worker is visible standing in the left lane.", "hazard_reasoning": "A construction worker is standing in the left lane. The worker blocks the travel lane, increasing the risk of collision, so the driver should be aware to safely navigate around him."}
{"id": "train_08301", "split": "train", "clip_key": "titan_clip_563_000102_movie", "source": {"subset": "titan", "scenario": "clip_563", "frame": "000102"}, "frames": ["titan_clip_563_000102_movie_t-3.jpg", "titan_clip_563_000102_movie_t-2.jpg", "titan_clip_563_000102_movie_t-1.jpg", "titan_clip_563_000102_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with no marked centerline runs between close buildings, the asphalt looks worn, and traffic is light with no moving vehicles ahead. On the left side near the ego car, a pedestrian wearing a cap and brown uniform pushes a green cart toward the vehicle, occupying part of the lane and becoming immediately relevant. Farther ahead on the left edge, a white van is stopped close to the curb, narrowing the passable space in the single usable lane. Another pedestrian is farther ahead on the left side walking away along the edge, remaining near the storefronts.", "hazard_reasoning": "There is a pedestrian wearing a cap and brown uniform, pushing a green cart on the left side of the road, towards the ego car. The pedestrian's proximity and movement into the vehicle's path reduce reaction time, so the driver should slow down to maintain safety."}
{"id": "train_08302", "split": "train", "clip_key": "2020-0228-150133_077546_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "077546"}, "frames": ["2020-0228-150133_077546_movie_t-3.jpg", "2020-0228-150133_077546_movie_t-2.jpg", "2020-0228-150133_077546_movie_t-1.jpg", "2020-0228-150133_077546_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the stopped mini-truck", "environment_perception": "An urban divided arterial with multiple same-direction lanes and a central barrier appears, the pavement looks smooth and traffic is moderate and moving steadily toward a signalized intersection ahead. A white mini-truck is stopped ahead in the ego lane along the left curb, occupying the path and prompting the ego vehicle to slow. A small hatchback farther ahead in the next lane proceeds at a steady speed, offering a potential gap relative to the stopped truck. A white SUV to the right of the ego lane continues forward in the adjacent lane and passes the ego vehicle. On the far side of the barrier, oncoming traffic moves continuously but is separated from the ego's path.", "hazard_reasoning": "There is a white mini-truck stopped in the ego lane, on the left side of the road, in front of the ego car. The stopped vehicle blocks the lane and may force the driver to change lanes or decelerate, so the driver should manoeuvre carefully around it to avoid a collision."}
{"id": "train_08303", "split": "train", "clip_key": "2020-0226-140503_079561_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "079561"}, "frames": ["2020-0226-140503_079561_movie_t-3.jpg", "2020-0226-140503_079561_movie_t-2.jpg", "2020-0226-140503_079561_movie_t-1.jpg", "2020-0226-140503_079561_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multi-lane divided road with smooth pavement carries heavy, stop-and-go traffic in the ego's direction, while oncoming flow across a planted median on the right moves steadily. A white hatchback directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle at a standstill. A queue of cars farther ahead in the same lane inches forward and brakes repeatedly, sustaining the jam. A black sedan in the adjacent left lane creeps alongside within its lane at low speed. Vehicles in the lane to the right also roll slowly ahead near the median, remaining in their lanes without overt movement.", "hazard_reasoning": "A white hatchback is stopped in front of the ego car in the ego lane, because of traffic congestion. Since the hatchback ahead has stopped due to congestion, you should stop to avoid a collision."}
{"id": "train_08304", "split": "train", "clip_key": "titan_clip_803_000090_movie", "source": {"subset": "titan", "scenario": "clip_803", "frame": "000090"}, "frames": ["titan_clip_803_000090_movie_t-3.jpg", "titan_clip_803_000090_movie_t-2.jpg", "titan_clip_803_000090_movie_t-1.jpg", "titan_clip_803_000090_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "be aware of cyclist", "environment_perception": "An urban back street with a very narrow two-way carriageway and no centerline runs between buildings, the worn pavement showing wet patches; traffic is light. A man in a white T-shirt cycles toward the ego along the right side of the road, approaching head-on and reducing passing space. A black sedan ahead near the center-left of the lane occupies much of the roadway, constraining the available lane for the ego vehicle. No salient signals or posted speeds are visible, and no other moving road users appear.", "hazard_reasoning": "There is a man wearing a white t-shirt, cycling on the right side of the road, towards the ego car. Since the cyclist is approaching the vehicle's path, the driver should be aware of the cyclist to anticipate their movement."}
{"id": "train_08305", "split": "train", "clip_key": "titan_clip_138_000174_movie", "source": {"subset": "titan", "scenario": "clip_138", "frame": "000174"}, "frames": ["titan_clip_138_000174_movie_t-3.jpg", "titan_clip_138_000174_movie_t-2.jpg", "titan_clip_138_000174_movie_t-1.jpg", "titan_clip_138_000174_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around parked truck", "environment_perception": "A narrow urban street runs between office buildings with a single travel lane and no median; the pavement is dry with strong sun glare, and traffic is light. Ahead on the right, a white box truck is parked for loading or unloading and slightly encroaches into the roadway, narrowing the available lane. A black sedan is parked close along the left curb near the ego vehicle, further tightening space. Farther ahead in the same direction, a small car continues straight and gradually pulls away without changing lanes. An orange traffic cone stands at the right curb by a doorway, and trees line the sidewalk.", "hazard_reasoning": "The white truck is parked on the right side of the road because of loading or unloading. The parked truck reduces the usable lane width and could obstruct your path, so you should manoeuvre carefully around it."}
{"id": "train_08306", "split": "train", "clip_key": "2020-0203-114632_075681_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "075681"}, "frames": ["2020-0203-114632_075681_movie_t-3.jpg", "2020-0203-114632_075681_movie_t-2.jpg", "2020-0203-114632_075681_movie_t-1.jpg", "2020-0203-114632_075681_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of the gray van changing lanes", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection, the pavement smooth and traffic moderate with short queues. A gray van ahead in the ego lane shifts to the right lane, briefly blocking the ego path before lining up near the stop line. Farther ahead in the right lane, a white van waits to continue straight, pacing the same-direction queue. On the far side of the intersection, oncoming trucks and cars are stopped with no immediate interaction. A small group of pedestrians stands on the near-right corner by the crosswalk, waiting. The traffic light facing the ego direction shows red, holding vehicles at the line.", "hazard_reasoning": "There is a gray van in the ego-car lane, making a left turn and changing lanes. The van's lane change may cut in front of the ego-vehicle, so the driver should be aware and anticipate its movement."}
{"id": "train_08307", "split": "train", "clip_key": "titan_clip_211_000768_movie", "source": {"subset": "titan", "scenario": "clip_211", "frame": "000768"}, "frames": ["titan_clip_211_000768_movie_t-3.jpg", "titan_clip_211_000768_movie_t-2.jpg", "titan_clip_211_000768_movie_t-1.jpg", "titan_clip_211_000768_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian", "environment_perception": "An urban back street with one narrow lane in each direction and no median, the pavement slightly worn and traffic light. A large delivery truck is stopped along the left edge ahead, encroaching into the ego lane and narrowing the passage; a small handcart and equipment sit behind it at the curb as additional obstacles. Farther ahead, a smaller box truck proceeds in the same direction, moving away and loosely setting the pace. On the right side, a pedestrian wearing a blue shirt and black pants walks away from the ego vehicle beside the curb by the shops and may step toward the lane.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, walking on the right side of the road, away from the ego car. The driver should yield because the pedestrian could step into the roadway unexpectedly, especially with limited visibility from the parked truck."}
{"id": "train_08308", "split": "train", "clip_key": "titan_clip_432_000318_movie", "source": {"subset": "titan", "scenario": "clip_432", "frame": "000318"}, "frames": ["titan_clip_432_000318_movie_t-3.jpg", "titan_clip_432_000318_movie_t-2.jpg", "titan_clip_432_000318_movie_t-1.jpg", "titan_clip_432_000318_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the cone", "environment_perception": "A narrow urban two-way street with a single lane each direction has smooth pavement and very light moving traffic, with the oncoming lane clear. Along the left side of the ego lane, several construction trucks are parked beside a work site, narrowing the passage, and green traffic cones line this edge because of the parked vehicles. A pedestrian on the right sidewalk near a building entrance stands briefly and then walks along, staying off the roadway. Farther ahead on the right sidewalk, another person continues past a fence without entering the lane. Construction equipment and stacked materials sit at the left curb as roadside obstacles.", "hazard_reasoning": "There is a green traffic cone on the left side of the street because of parked vehicles. Drivers should carefully manoeuvre around the cone to avoid collisions and maintain safe clearance ahead."}
{"id": "train_08309", "split": "train", "clip_key": "2020-0205-103411_106720_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "106720"}, "frames": ["2020-0205-103411_106720_movie_t-3.jpg", "2020-0205-103411_106720_movie_t-2.jpg", "2020-0205-103411_106720_movie_t-1.jpg", "2020-0205-103411_106720_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial with a painted median and smooth pavement approaches a signalized intersection; traffic is light to moderate but queues near the stop line. A white microvan directly ahead in the ego lane is stopped, holding the ego car in place. In the adjacent same-direction lane to the left, a dark van is also stopped slightly ahead in the queue. Across the median, sparse oncoming vehicles continue through the junction. The traffic signal facing the ego direction shows red, and strong sun glare from the left brightens the scene.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car. The driver should stop promptly to avoid rear-ending the stationary vehicle ahead."}
{"id": "train_08310", "split": "train", "clip_key": "2020-0129-105040_059504_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "059504"}, "frames": ["2020-0129-105040_059504_movie_t-3.jpg", "2020-0129-105040_059504_movie_t-2.jpg", "2020-0129-105040_059504_movie_t-1.jpg", "2020-0129-105040_059504_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road approaches a railway crossing, with a single lane in each direction, no median, and smooth pavement; traffic appears moderate. A white sedan ahead in the ego lane slows near the crossing, constraining the ego vehicle's pace. Two pedestrians just ahead on the left walk across the approach and may enter the ego lane. An oncoming dark gray hatchback travels toward the camera on the right and passes by in its lane. Signals and gates for the railway crossing are visible.", "hazard_reasoning": "There is a white sedan slowing in the ego lane, in front of the ego car. Because this vehicle is decelerating, you should slow down to maintain a safe following distance."}
{"id": "train_08311", "split": "train", "clip_key": "2020-0207-151349_073099_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "073099"}, "frames": ["2020-0207-151349_073099_movie_t-3.jpg", "2020-0207-151349_073099_movie_t-2.jpg", "2020-0207-151349_073099_movie_t-1.jpg", "2020-0207-151349_073099_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban signalized intersection with dry, well-marked asphalt and no median is ahead, and traffic moves at a moderate pace as vehicles turn. A black van from the right turns across the junction into the ego lane in front of the car, entering the lane ahead and momentarily constraining the ego vehicle. On the far left, a light-colored kei wagon creeps into the intersection to turn right across the ego path but waits for a safe opening and remains outside the lane. In the distant crosswalk, several cyclists ride right to left, continuing through and affecting the timing of turning traffic.", "hazard_reasoning": "There is a black van turning in front of the ego car in the ego lane. The van's maneuver cuts into your path, so you should follow the vehicle ahead to maintain safe distance and avoid collision."}
{"id": "train_08312", "split": "train", "clip_key": "titan_clip_889_000420_movie", "source": {"subset": "titan", "scenario": "clip_889", "frame": "000420"}, "frames": ["titan_clip_889_000420_movie_t-3.jpg", "titan_clip_889_000420_movie_t-2.jpg", "titan_clip_889_000420_movie_t-1.jpg", "titan_clip_889_000420_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban commercial street with shops lines a single shared lane without a centerline, the asphalt looks smooth and there is no moving vehicular traffic, so flow is light and dominated by pedestrians. On the right ahead, a pedestrian carrying a backpack and wearing a cap walks away from the ego vehicle along the lane edge, potentially occupying the ego path. Farther ahead, a small group of pedestrians moves across and along the middle of the lane, slowing the approach as they remain in the roadway. At the left foreground, a man stands at the curb beside a signboard, waiting near the travel way. A parked bicycle on the left, a wheeled sign and a low platform on the right further narrow the usable lane.", "hazard_reasoning": "There is a pedestrian carrying a backpack and wearing a cap, walking on the right side of the road, away from the ego car. The pedestrian could step into the vehicle's path unexpectedly, so the driver should slow down."}
{"id": "train_08313", "split": "train", "clip_key": "titan_clip_363_000306_movie", "source": {"subset": "titan", "scenario": "clip_363", "frame": "000306"}, "frames": ["titan_clip_363_000306_movie_t-3.jpg", "titan_clip_363_000306_movie_t-2.jpg", "titan_clip_363_000306_movie_t-1.jpg", "titan_clip_363_000306_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban residential alley with a narrow two-way roadway and no median runs between houses on the left and a tall hedge with curb stones on the right. The pavement is wet with small puddles, and traffic is very light with no vehicles visible as the ego-vehicle advances slowly. On the left ahead, a pedestrian carrying an umbrella and backpack walks away along the edge of the road, close to the vehicle's line. Farther ahead near the center, another pedestrian with an umbrella approaches in the roadway, occupying part of the travel path and constraining the pace. Low curb blocks line the right edge, leaving limited clearance.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and backpack, walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre because the pedestrian may step into the vehicle's path on the slippery, wet road."}
{"id": "train_08314", "split": "train", "clip_key": "2020-0207-101955_113059_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "113059"}, "frames": ["2020-0207-101955_113059_movie_t-3.jpg", "2020-0207-101955_113059_movie_t-2.jpg", "2020-0207-101955_113059_movie_t-1.jpg", "2020-0207-101955_113059_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway tunnel with two same-direction lanes divided by a solid orange line has smooth pavement and heavy, slow-moving traffic. A black sedan directly ahead in the left ego lane slows because of congestion forming up the tunnel, constraining the ego car's pace. In the adjacent right lane a white hatchback slightly ahead rolls slowly alongside. Farther ahead in the right lane, several cars and trucks queue with brake lights on, reinforcing the bottleneck. No traffic signals are visible, and the scene is bounded by concrete tunnel walls and a guardrail.", "hazard_reasoning": "There is a black Sedan slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should slow down to maintain a safe following distance due to the congestion ahead."}
{"id": "train_08315", "split": "train", "clip_key": "2020-0218-103119_027214_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "027214"}, "frames": ["2020-0218-103119_027214_movie_t-3.jpg", "2020-0218-103119_027214_movie_t-2.jpg", "2020-0218-103119_027214_movie_t-1.jpg", "2020-0218-103119_027214_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial street with one lane each way is separated by solid double lines and a painted buffer; the pavement is smooth and traffic is moderate. A white box truck ahead in the ego lane drives away from the ego car with the flow, and the ego follows at a steady gap. To the right, a white minivan approaches in the oncoming lane and passes by along the center lines without encroaching. Several pedestrians on the left sidewalk stand and walk near the curb by storefronts but stay off the roadway.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because of a green traffic light. The upcoming red traffic light will require a stop, so following the vehicle ahead helps you anticipate and react safely."}
{"id": "train_08316", "split": "train", "clip_key": "titan_clip_62_000198_movie", "source": {"subset": "titan", "scenario": "clip_62", "frame": "000198"}, "frames": ["titan_clip_62_000198_movie_t-3.jpg", "titan_clip_62_000198_movie_t-2.jpg", "titan_clip_62_000198_movie_t-1.jpg", "titan_clip_62_000198_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane per direction, no median, and smooth asphalt is lightly trafficked, and the ego slows as pedestrians enter ahead. Ahead in the ego lane, a pedestrian carrying an umbrella crosses toward the left side directly in front of the vehicle, constraining its pace. A few more pedestrians farther ahead also cross right-to-left across the ego path, keeping the lane occupied. A white delivery van in the same lane ahead moves slowly as it yields to the crossing people. A large black van is parked along the left curb near the ego, narrowing the lane, while others stand on the right sidewalk.", "hazard_reasoning": "There is a pedestrian carrying an umbrella, crossing the street in front of the ego car, to the left side. The driver should slow down to avoid a potential collision since the pedestrian is entering the vehicle's path."}
{"id": "train_08317", "split": "train", "clip_key": "2020-0220-151845_037996_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "037996"}, "frames": ["2020-0220-151845_037996_movie_t-3.jpg", "2020-0220-151845_037996_movie_t-2.jpg", "2020-0220-151845_037996_movie_t-1.jpg", "2020-0220-151845_037996_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban viaduct passes between midrise buildings, with the ego car in the left of two same-direction lanes bounded by concrete barriers; the pavement looks damp and traffic is moderate. A truck ahead in the ego lane slows, constraining the ego car's pace. A sedan in the adjacent right lane runs alongside and edges forward, limiting room to merge. Farther ahead, another car in the right lane proceeds steadily with the flow.", "hazard_reasoning": "There is a red truck slowing in front of the ego car in the ego lane. Because the truck is decelerating ahead, the driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_08318", "split": "train", "clip_key": "titan_clip_235_000402_movie", "source": {"subset": "titan", "scenario": "clip_235", "frame": "000402"}, "frames": ["titan_clip_235_000402_movie_t-3.jpg", "titan_clip_235_000402_movie_t-2.jpg", "titan_clip_235_000402_movie_t-1.jpg", "titan_clip_235_000402_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "A narrow urban side street with brick paving and no centerline runs between tall buildings; the surface looks good and traffic is light as the ego-vehicle rolls slowly ahead. Immediately to the right, a large white box truck is parked with its rear doors open and stacked crates visible, narrowing the usable lane. Farther ahead near the left curb, another white truck stands stopped and is being unloaded, so it is parked on the left side and partly intrudes into the ego path. A small loading cart and equipment sit behind the left truck, adding to the obstruction. No traffic signals or control signs are evident.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. This parked truck partially blocks the lane, so the driver should manoeuvre carefully to avoid a collision while passing."}
{"id": "train_08319", "split": "train", "clip_key": "2020-0220-102630_020917_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "020917"}, "frames": ["2020-0220-102630_020917_movie_t-3.jpg", "2020-0220-102630_020917_movie_t-2.jpg", "2020-0220-102630_020917_movie_t-1.jpg", "2020-0220-102630_020917_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban multi-lane arterial runs straight with three lanes in the ego direction and a fence median separating oncoming traffic; the asphalt is dry and flow is slow and moderately heavy. Ahead, a white sedan in the ego lane moves right into the adjacent lane in front of the ego car, changing lanes as described. Farther ahead, a large box truck continues slowly in the middle lane, limiting the pace of vehicles behind. To the right, a small covered pickup advances while edging right within its lane, running parallel to the ego vehicle.", "hazard_reasoning": "There is a white sedan changing lanes in front of the ego car, from the ego lane to the right lane. A sudden lane change by the white sedan may reduce your buffer and force you to stop abruptly to prevent a collision."}
{"id": "train_08320", "split": "train", "clip_key": "2020-0228-150133_015859_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "015859"}, "frames": ["2020-0228-150133_015859_movie_t-3.jpg", "2020-0228-150133_015859_movie_t-2.jpg", "2020-0228-150133_015859_movie_t-1.jpg", "2020-0228-150133_015859_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane two-way street with left-hand traffic runs alongside apartment blocks, the pavement smooth but the lane narrow, and traffic is momentarily stopped. A silver van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle at a standstill near a zebra crossing. A large delivery truck sits along the left curb slightly ahead, also stopped and intruding into the lane, further narrowing the path. No oncoming vehicles are visible to the right, and a guardrail lines the opposite side.", "hazard_reasoning": "There is a silver van stopped in the ego lane, because of traffic congestion ahead. You should stop to avoid rear-ending the stationary van in the congested traffic."}
{"id": "train_08321", "split": "train", "clip_key": "2020-0203-114632_085302_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "085302"}, "frames": ["2020-0203-114632_085302_movie_t-3.jpg", "2020-0203-114632_085302_movie_t-2.jpg", "2020-0203-114632_085302_movie_t-1.jpg", "2020-0203-114632_085302_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated structure has two through lanes in the ego direction with a right-side lane that tapers out; the pavement is dry and smooth, and traffic is moderate. Ahead in the ego lane, a white minivan slows because a large box truck to its right is merging left into the ego lane from the ending lane, briefly constraining our pace. The box truck edges over across the hatched taper area just in front of the minivan, and other same-direction vehicles continue steadily farther ahead.", "hazard_reasoning": "There is a white minivan slowing down in front of the ego lane because the truck in front of it is merging into the ego lane. The merging truck forces the minivan to decelerate suddenly, creating a risk of rear-end collision if the driver does not adjust speed promptly, so the driver should slow down to maintain a safe distance under this situation."}
{"id": "train_08322", "split": "train", "clip_key": "titan_clip_995_000498_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_995_000498_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_995_000498_movie_t-3_augB1.jpg", "titan_clip_995_000498_movie_t-2_augB1.jpg", "titan_clip_995_000498_movie_t-1_augB1.jpg", "titan_clip_995_000498_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban back street with a single narrow lane and no centerline runs straight between mid-rise buildings, with a brick-paved surface and light traffic. Ahead in the middle of the lane, a pedestrian carrying a handbag walks away from the ego car, occupying the path and setting the pace. From the left crosswalk at the junction, a bicyclist rides out across the vehicle's front and proceeds into the street, likely to merge ahead. On the left curb just past the corner, two pedestrians linger and stroll along the edge by parked bicycles but stay out of the lane. A marked crosswalk is present at the corner and a do-not-enter sign faces the side street.", "hazard_reasoning": "There is a pedestrian carrying a handbag in the middle of the road, walking away from the ego car. The pedestrian is crossing ahead and may not be fully visible to the driver, so slowing down is necessary to avoid a collision and ensure safety."}
{"id": "train_08323", "split": "train", "clip_key": "titan_clip_1189_000360_movie", "source": {"subset": "titan", "scenario": "clip_1189", "frame": "000360"}, "frames": ["titan_clip_1189_000360_movie_t-3.jpg", "titan_clip_1189_000360_movie_t-2.jpg", "titan_clip_1189_000360_movie_t-1.jpg", "titan_clip_1189_000360_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van on the left.", "environment_perception": "A dense urban commercial street with narrow two-way traffic, no median, and smooth asphalt shows light, slow flow. Ahead in the ego lane near the left curb, a silver van moves slowly close to the curb on the left side of the road and governs the pace. At the near left edge beside the ego vehicle, a white sedan noses out from a curbside position, edging toward the lane and potentially entering our path. Farther ahead near the centerline, a pedestrian steps off the right sidewalk and walks left into the roadway, potentially crossing our lane. No traffic signals are prominent; storefronts and a parked bicycle line the right sidewalk.", "hazard_reasoning": "There is a silver van parked on the left side of the road. The stationary vehicle might restrict lane space and require cautious navigation to avoid potential collision."}
{"id": "train_08324", "split": "train", "clip_key": "2020-0228-102841_051547_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "051547"}, "frames": ["2020-0228-102841_051547_movie_t-3.jpg", "2020-0228-102841_051547_movie_t-2.jpg", "2020-0228-102841_051547_movie_t-1.jpg", "2020-0228-102841_051547_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with dry reddish pavement carries moderate, slowing traffic, with buildings close by and a guardrail along the right edge. A small white van directly ahead in the ego lane decelerates behind slower traffic in the same lane, setting the ego vehicle's pace. A large box truck in the lane to the left runs slightly ahead and rolls slowly parallel to the ego, limiting space to move left. Another box truck ahead in the right lane also creeps forward, narrowing room on the right and maintaining the general slow flow.", "hazard_reasoning": "There is a white van slowing down in front of the ego car because of another slowing vehicle ahead in the ego lane. The van's deceleration can lead to a rapid speed change for the ego-vehicle, so the driver should reduce speed to avoid a rear-end collision under this circumstance."}
{"id": "train_08325", "split": "train", "clip_key": "2020-0207-151349_092999_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "092999"}, "frames": ["2020-0207-151349_092999_movie_t-3.jpg", "2020-0207-151349_092999_movie_t-2.jpg", "2020-0207-151349_092999_movie_t-1.jpg", "2020-0207-151349_092999_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with metal fences along both sides shows dry pavement and heavy, queuing traffic. Directly ahead in the left curbside ego lane, a small white flatbed truck is stationary for a red light, holding the ego vehicle. In the adjacent right lane slightly ahead, a large dump truck is also stopped, blocking some forward view and limiting merge options. Farther right, a silver minivan waits in line beside the dump truck. Overhead gantry signs span the road in the distance, and strong low sun from the upper right creates glare across the scene.", "hazard_reasoning": "There is a white truck stopped in the ego lane because of red traffic light. The driver must stop to avoid rear-ending the halted vehicle and respect the traffic signal."}
{"id": "train_08326", "split": "train", "clip_key": "2020-0226-140503_059573_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "059573"}, "frames": ["2020-0226-140503_059573_movie_t-3.jpg", "2020-0226-140503_059573_movie_t-2.jpg", "2020-0226-140503_059573_movie_t-1.jpg", "2020-0226-140503_059573_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian at crosswalk", "environment_perception": "An urban commercial street with a single lane in the ego direction and no median stretches ahead; the pavement looks smooth and traffic is light. A white sedan ahead in the ego lane cruises slowly toward the midblock area, moderating the ego-vehicle's pace. Farther ahead, a pedestrian wearing a purple coat and carrying a handbag is crossing the street at the marked crosswalk from right to left, moving into the ego vehicle's path. Numerous pedestrians line both sidewalks on the right and left, some walking near the curb and others waiting by bollards, but they remain off the roadway. No oncoming vehicles are visible and there are no unusual control devices beyond typical crosswalk markings.", "hazard_reasoning": "There is a pedestrian wearing a purple coat and carrying a handbag, crossing the street at the pedestrian crosswalk, from the right side of the road to the left side. Yielding is necessary because the pedestrian is in your path on the crosswalk and may enter your vehicle's trajectory."}
{"id": "train_08327", "split": "train", "clip_key": "2020-0207-101955_053236_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "053236"}, "frames": ["2020-0207-101955_053236_movie_t-3.jpg", "2020-0207-101955_053236_movie_t-2.jpg", "2020-0207-101955_053236_movie_t-1.jpg", "2020-0207-101955_053236_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes per direction runs between mid-rise buildings, divided by a low planted median; the pavement is good and traffic in the ego direction is heavy and mostly stopped while oncoming flow across the median moves steadily. Directly ahead in the ego lane, a black sedan is stopped because of congestion, holding the ego vehicle. In the adjacent right lane, a white van slightly ahead also queues and inches forward with several cars stacked ahead. Across the median to the right, opposing vehicles continue past without delay. An overhead blue direction sign provides route guidance and indicates 400 m to an upcoming junction.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop now to avoid a rear-end collision and maintain a safe distance in the congested traffic."}
{"id": "train_08328", "split": "train", "clip_key": "2020-0129-144857_041715_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-144857_041715_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-144857_041715_movie_t-3_augB1.jpg", "2020-0129-144857_041715_movie_t-2_augB1.jpg", "2020-0129-144857_041715_movie_t-1_augB1.jpg", "2020-0129-144857_041715_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated structure, with the ego vehicle in the rightmost lane beside a guardrail; the pavement is smooth and traffic is heavy and slow-moving. A black van directly ahead in the ego lane slows and pauses in congestion, constraining the ego car's pace. To the left, a white station wagon in the adjacent lane creeps forward slightly faster, staying close alongside and limiting room for a lane change. Farther left, a covered work truck inches ahead with the queue. A circular 50 speed limit sign is mounted on a right-side pillar.", "hazard_reasoning": "There is a black van slowing in front of the ego car in the ego lane, because of traffic congestion. The van's reduced speed increases the risk of a rear-end collision, so the driver should slow down to maintain a safe following distance."}
{"id": "train_08329", "split": "train", "clip_key": "titan_clip_859_000162_movie", "source": {"subset": "titan", "scenario": "clip_859", "frame": "000162"}, "frames": ["titan_clip_859_000162_movie_t-3.jpg", "titan_clip_859_000162_movie_t-2.jpg", "titan_clip_859_000162_movie_t-1.jpg", "titan_clip_859_000162_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban residential street with a very narrow two-way carriageway and no centerline is seen, the ego-vehicle traveling along the left side on smooth dry asphalt; traffic remains light with no same-direction or oncoming vehicles visible. A bicycle is parked on the right edge by a fence, and several boxes and bags are stacked slightly into the roadway near the right curb, narrowing that side. No pedestrians or motorbikes appear, and there are no salient traffic signals or posted speeds influencing movement. The road bends gently ahead between closely spaced buildings without other notable changes.", "hazard_reasoning": "There is a cyclist wearing a white shirt and cycling, on the right side of the road, towards the ego-car. You should carefully manoeuvre around the cyclist to avoid a collision."}
{"id": "train_08330", "split": "train", "clip_key": "2020-0228-102841_061384_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "061384"}, "frames": ["2020-0228-102841_061384_movie_t-3.jpg", "2020-0228-102841_061384_movie_t-2.jpg", "2020-0228-102841_061384_movie_t-1.jpg", "2020-0228-102841_061384_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and clear weather carries heavy, slow traffic that comes to a stop at an intersection. A gray SUV directly ahead in the ego lane is stopped for the signal, holding the ego vehicle in place. In the lane to the left, a black sedan followed by several trucks creeps forward in the queue, remaining alongside without merging. On the far right, a line of white vans stands parked along the curb outside the travel lanes, posing no immediate interference. Overhead traffic lights and street lamps are visible ahead, and no unusual obstacles or work zones appear.", "hazard_reasoning": "There is a gray SUV stopped in front of the ego car because of a red traffic light. The driver must stop to maintain a safe distance and avoid colliding with the stationary vehicle ahead."}
{"id": "train_08331", "split": "train", "clip_key": "2020-0131-103016_070262_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-103016_070262_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-103016_070262_movie_t-3_augB1.jpg", "2020-0131-103016_070262_movie_t-2_augB1.jpg", "2020-0131-103016_070262_movie_t-1_augB1.jpg", "2020-0131-103016_070262_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial with smooth pavement and a right-side guardrail runs between tall buildings, and traffic moves at a moderate pace. A silver box truck directly ahead in the ego lane slows, constraining the ego car's speed. To the left, a black sedan slightly ahead continues straight at a similar pace, occupying that lane and limiting an immediate move left. To the right, a light-colored minivan overtakes in the adjacent lane, covering the ego car's right side. Farther ahead in the right lane, a motorcycle proceeds steadily away.", "hazard_reasoning": "There is a silver truck slowing in front of the ego car, in the ego lane. The silver truck is decelerating and could require the driver to brake suddenly to avoid a collision, so the driver should slow down accordingly."}
{"id": "train_08332", "split": "train", "clip_key": "titan_clip_349_000318_movie", "source": {"subset": "titan", "scenario": "clip_349", "frame": "000318"}, "frames": ["titan_clip_349_000318_movie_t-3.jpg", "titan_clip_349_000318_movie_t-2.jpg", "titan_clip_349_000318_movie_t-1.jpg", "titan_clip_349_000318_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked van ahead", "environment_perception": "A narrow urban commercial street with one lane each way and no centerline curves gently left on smooth asphalt, and traffic is light. Ahead on the left, a black van is parked in the ego lane while being unloaded, narrowing the passage and constraining the ego vehicle's pace. At the near left curb, a black car sits stopped with its nose close to the lane, further reducing clearance as the ego approaches. On the right sidewalk beside storefronts, a pedestrian carrying a bag walks near the curb, remaining on the walkway but close to the travel lane. Bicycles are parked by a lamppost ahead on the right, and no salient traffic signals affect the scene.", "hazard_reasoning": "There is a black van parked on the left side of the road, in the ego lane, because it is being unloaded. The parked van may obstruct the ego-vehicle's path and requires the driver to proceed with caution."}
{"id": "train_08333", "split": "train", "clip_key": "2020-0214-102601_001795_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "001795"}, "frames": ["2020-0214-102601_001795_movie_t-3.jpg", "2020-0214-102601_001795_movie_t-2.jpg", "2020-0214-102601_001795_movie_t-1.jpg", "2020-0214-102601_001795_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street scene shows a narrow two-lane two-way road with a solid yellow centerline, smooth pavement, and sidewalks protected by low guardrails; traffic is light with no moving vehicles visible. A pedestrian stands on the right sidewalk near a fence by a vending machine shelter, remaining stationary and not approaching the roadway. A scooter is parked in a recessed driveway ahead to the left of the storefront, staying clear of the travel lane. No traffic signals or notable signs are visible, and there are no obstacles encroaching on the lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain normal driving."}
{"id": "train_08334", "split": "train", "clip_key": "2020-0214-102601_022831_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "022831"}, "frames": ["2020-0214-102601_022831_movie_t-3.jpg", "2020-0214-102601_022831_movie_t-2.jpg", "2020-0214-102601_022831_movie_t-1.jpg", "2020-0214-102601_022831_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection with smooth pavement and clear markings, and traffic is moderate and slowing to a stop; a metal guardrail lines the right edge. A gray van is directly ahead in the ego lane and remains stopped because the signal ahead shows red, holding the ego car. In the lane to the left, a black taxi waits slightly ahead at the stop line, occupying the adjacent space. Farther left, a motor scooter stands at the front of its lane near the crosswalk for the red light.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, in the ego lane, because of a red traffic light. You should stop to avoid colliding with the halted van and obey the traffic signal."}
{"id": "train_08335", "split": "train", "clip_key": "2020-0225-102455_003657_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "003657"}, "frames": ["2020-0225-102455_003657_movie_t-3.jpg", "2020-0225-102455_003657_movie_t-2.jpg", "2020-0225-102455_003657_movie_t-1.jpg", "2020-0225-102455_003657_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban two-way road with a single orange centerline and dry pavement is heavily congested, and traffic barely creeps. A silver box truck directly ahead in the ego lane is stopped because of the traffic jam, blocking the path. A large blue-and-white truck stands immediately to the left alongside the ego vehicle, also halted in the same-direction queue and narrowing clearance. A motorcyclist ahead threads between the trucks toward the front of the line, passing close to the ego lane. Overhead blue direction signs on a gantry are visible.", "hazard_reasoning": "There is a silver truck stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop promptly to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_08336", "split": "train", "clip_key": "2020-0226-101332_070425_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "070425"}, "frames": ["2020-0226-101332_070425_movie_t-3.jpg", "2020-0226-101332_070425_movie_t-2.jpg", "2020-0226-101332_070425_movie_t-1.jpg", "2020-0226-101332_070425_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to pedestrians", "environment_perception": "An urban multi-lane road approaches a signalized intersection under an elevated roadway; pavement appears dry and traffic in the same direction is moderate and momentarily stopped. A gray van directly ahead in the ego lane is stopped near the crosswalk because pedestrians are crossing, blocking the path. To the left, a small white box truck in the adjacent lane is also halted at the line, pacing the queue. On the right, two white vans in the neighboring lane roll slowly toward the crosswalk and sit alongside the ego vehicle, limiting lateral clearance. Several pedestrians traverse the crosswalk ahead, and the signal visible above shows red.", "hazard_reasoning": "There is a gray van stopped near the intersection, in the ego lane, because of the pedestrians crossing ahead at the crosswalk. The driver should yield to allow pedestrians to cross safely under this situation."}
{"id": "train_08337", "split": "train", "clip_key": "2020-0220-102630_034197_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "034197"}, "frames": ["2020-0220-102630_034197_movie_t-3.jpg", "2020-0220-102630_034197_movie_t-2.jpg", "2020-0220-102630_034197_movie_t-1.jpg", "2020-0220-102630_034197_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane in each direction, no median, and dry, smooth asphalt approaches a signalized intersection marked by a wide zebra crossing; overall traffic is light to moderate. A small box truck is stopped ahead near the left curb by the crosswalk in the ego lane, narrowing the path. Several oncoming kei vans queue to the right at their stop line, stationary and not entering the ego lane. Two pedestrians walk along the left sidewalk toward the intersection near the curb. A bicyclist waits on the far right beside the stone wall near the crosswalk, close to the oncoming queue.", "hazard_reasoning": "No hazards are present in this scenario, so the driver can continue driving without adjustment as visibility and traffic conditions are stable."}
{"id": "train_08338", "split": "train", "clip_key": "2020-0203-154554_023325_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "023325"}, "frames": ["2020-0203-154554_023325_movie_t-3.jpg", "2020-0203-154554_023325_movie_t-2.jpg", "2020-0203-154554_023325_movie_t-1.jpg", "2020-0203-154554_023325_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A busy urban divided arterial with multiple same-direction lanes runs between tall buildings; pavement looks smooth and traffic is heavy and queued at an intersection. A black sedan is stopped directly ahead in the ego lane at a red light, holding the ego vehicle. To the left, a white station wagon creeps forward in the adjacent lane alongside the queue without entering the ego path. Farther ahead in the same direction, a white minibus waits with the line of cars, setting the pace. On the far right beyond a low hedge median, oncoming vehicles travel the opposite way. A red traffic signal is visible above the intersection.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver must stop to avoid colliding with the stationary vehicle at the red light."}
{"id": "train_08339", "split": "train", "clip_key": "titan_clip_391_000756_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_391_000756_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_391_000756_movie_t-3_augB1.jpg", "titan_clip_391_000756_movie_t-2_augB1.jpg", "titan_clip_391_000756_movie_t-1_augB1.jpg", "titan_clip_391_000756_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian crossing.", "environment_perception": "A dense urban shopping street with a single narrow shared lane and stone-paved surface shows light traffic and low speeds, with no marked divider and tight clearance by storefronts. Ahead in the middle of the road, a pedestrian wearing a white T-shirt and pants crosses from right to left, directly in the ego vehicle's path. A small van in the same lane a short distance ahead is stopped with its rear open, narrowing the lane and constraining the pace. Farther ahead, a white truck proceeds away in the same direction along the street. A no-entry sign is posted at a side alley on the left.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and pants crossing the street, in the middle of the road, from the right side to the left. The driver should be aware of the pedestrian crossing to avoid a collision."}
{"id": "train_08340", "split": "train", "clip_key": "titan_clip_423_000414_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_423_000414_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_423_000414_movie_t-3_augB1.jpg", "titan_clip_423_000414_movie_t-2_augB1.jpg", "titan_clip_423_000414_movie_t-1_augB1.jpg", "titan_clip_423_000414_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street with one lane each direction has smooth pavement and no median, and traffic is light but momentarily impeded. Ahead to the right in the oncoming lane, a white box truck faces the camera and is stopped near the centerline, narrowing the roadway and influencing the ego vehicle's path. On the right side near this truck, a pedestrian wearing a blue shirt and a white helmet stands partly in the roadway and gestures with a flag, guiding the traffic and effectively controlling the ego vehicle's pace. A narrow sidewalk with bollards lines the left, and no salient signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and white helmet, standing on the right side of the road, because they are guiding the traffic. The driver should carefully manoeuvre around the pedestrian to avoid a collision while they direct vehicles."}
{"id": "train_08341", "split": "train", "clip_key": "2020-0225-145150_018567_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "018567"}, "frames": ["2020-0225-145150_018567_movie_t-3.jpg", "2020-0225-145150_018567_movie_t-2.jpg", "2020-0225-145150_018567_movie_t-1.jpg", "2020-0225-145150_018567_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial lined with mid-rise buildings runs straight ahead, with opposing directions split by a painted median; the dry pavement is smooth and traffic is light to moderate and steady. The ego vehicle follows a gray van ahead in the same lane, which drives away at a steady pace. To its left, a black boxy car travels slightly ahead in the adjacent lane, continuing straight and not merging. Farther ahead in the lane to the right, a white car proceeds straight with a larger gap. Oncoming traffic moves on the right-side carriageway beyond the median without interaction.", "hazard_reasoning": "There is a gray van driving in the ego lane away from the ego car. The gray van ahead may brake unexpectedly, so be cautious to avoid a collision."}
{"id": "train_08342", "split": "train", "clip_key": "2020-0225-145150_001102_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "001102"}, "frames": ["2020-0225-145150_001102_movie_t-3.jpg", "2020-0225-145150_001102_movie_t-2.jpg", "2020-0225-145150_001102_movie_t-1.jpg", "2020-0225-145150_001102_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the stopped motorcycle.", "environment_perception": "An urban two-way street with one lane per direction and a painted centerline passes mid-rise buildings; the pavement is smooth and traffic bunches near an intersection. Directly ahead in the ego lane, a red motorcycle with a helmeted rider is stopped as the traffic signal at the upcoming intersection is red, holding the ego car. In front of it, a white sedan is already queued at the line and waits. On the right sidewalk, a pedestrian walks along, remaining off the roadway. A dark minivan is parked on the opposite curb.", "hazard_reasoning": "There is a red motorcycle stopped in front of the ego car because of the red traffic light ahead at the intersection. Manoeuvre carefully around the stopped motorcycle to maintain a safe distance and avoid collision as you approach the intersection."}
{"id": "train_08343", "split": "train", "clip_key": "2020-0210-101957_083809_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "083809"}, "frames": ["2020-0210-101957_083809_movie_t-3.jpg", "2020-0210-101957_083809_movie_t-2.jpg", "2020-0210-101957_083809_movie_t-1.jpg", "2020-0210-101957_083809_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with two narrow lanes and a solid yellow center line runs between apartments, the asphalt smooth and traffic light. A yellow truck ahead in the ego lane drives away from the camera at steady speed, mildly constraining our pace. On the right sidewalk a man stands near a building entrance while a person with a bicycle waits by the curb, but they remain off the roadway. Several white vans are parked on the left near a side street, and a scooter is parked at the near left curb. The oncoming lane appears clear.", "hazard_reasoning": "There is a yellow truck driving in the ego lane, away from the ego car. You should follow the vehicle ahead at a safe distance because it may brake suddenly or obscure hazards."}
{"id": "train_08344", "split": "train", "clip_key": "2020-0207-151349_019309_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "019309"}, "frames": ["2020-0207-151349_019309_movie_t-3.jpg", "2020-0207-151349_019309_movie_t-2.jpg", "2020-0207-151349_019309_movie_t-1.jpg", "2020-0207-151349_019309_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane same-direction road runs between tall buildings, with three lanes and a raised curb dividing a side lane to the right; the pavement is dry and traffic is heavy with queues ahead. A white box truck directly ahead in the ego lane slows and comes to a stop because congestion forms further ahead, holding the ego vehicle. To the right, a line of cars including a dark SUV creeps forward in the adjacent lane, constraining any lane change. On the far left behind a railing, a bicyclist rides forward along the edge and remains separated from traffic. Low sun glare reduces visibility.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop promptly to avoid a collision with the halted truck."}
{"id": "train_08345", "split": "train", "clip_key": "2020-0206-101736_044942_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "044942"}, "frames": ["2020-0206-101736_044942_movie_t-3.jpg", "2020-0206-101736_044942_movie_t-2.jpg", "2020-0206-101736_044942_movie_t-1.jpg", "2020-0206-101736_044942_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs between mid-rise buildings, the dry pavement in good condition and traffic heavy and stop-and-go; a bollard-separated lane lines the right side and a pedestrian overpass spans ahead. A white van directly ahead in the ego lane is stopped because congestion blocks the way under the bridge, holding the ego vehicle. In the lane beyond the right-side bollards, a white van idles alongside and creeps forward within the separated channel, remaining apart from the ego path. To the left, a queue of trucks and minivans inches ahead in the same direction, keeping the flow slow.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid colliding with the halted vehicle."}
{"id": "train_08346", "split": "train", "clip_key": "2020-0127-132751_085137_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0127-132751_085137_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0127-132751_085137_movie_t-3_augB1.jpg", "2020-0127-132751_085137_movie_t-2_augB1.jpg", "2020-0127-132751_085137_movie_t-1_augB1.jpg", "2020-0127-132751_085137_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with multiple same-direction lanes and no physical median has dry, well-marked pavement and heavy, slow-moving traffic. Ahead in the ego lane, a black truck with a green tarp slows to a crawl because congestion builds in front, directly setting the ego vehicle's pace. In the left adjacent lane slightly ahead, a large silver box truck rolls slowly in the same queue, leaving little gap for a left merge. In the right lane, a white SUV ahead and a black minicar alongside creep forward nose-to-tail, limiting room to merge right.", "hazard_reasoning": "There is a black truck with a green tarp slowing down in the ego lane because of traffic congestion ahead. The truck's deceleration signals queuing traffic, so the driver should reduce speed to maintain a safe following distance."}
{"id": "train_08347", "split": "train", "clip_key": "2020-0207-101955_111018_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "111018"}, "frames": ["2020-0207-101955_111018_movie_t-3.jpg", "2020-0207-101955_111018_movie_t-2.jpg", "2020-0207-101955_111018_movie_t-1.jpg", "2020-0207-101955_111018_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated expressway, with three same-direction lanes and sound pavement; traffic is heavy and mostly stop-and-go. A blue sedan directly ahead in the ego lane slows because a dump truck merges into the same lane in front of it. The merging dump truck, slightly farther ahead and moving in from the left lane, encroaches into the ego path and compresses the queue. Large trucks in the lanes to the left and right creep forward alongside, leaving little lateral space next to the ego lane.", "hazard_reasoning": "There is a blue sedan slowing in the ego lane, away from the ego car, because of a truck lane changing into the ego lane ahead. The truck is merging into the ego lane ahead, so you should slow down to maintain a safe distance."}
{"id": "train_08348", "split": "train", "clip_key": "2020-0131-135401_088058_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "088058"}, "frames": ["2020-0131-135401_088058_movie_t-3.jpg", "2020-0131-135401_088058_movie_t-2.jpg", "2020-0131-135401_088058_movie_t-1.jpg", "2020-0131-135401_088058_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes runs between mid-rise buildings, divided from oncoming traffic by a concrete median; the pavement is clean and traffic is heavy with stop-and-go flow. Ahead in the ego lane, a white van is stopped due to congestion and blocks the path. To the left, a large orange tanker truck alongside the ego car inches forward in the adjacent lane, leaving little gap for a lane change. Farther ahead in that lane, a small white van also creeps in the queue, adding to the backup. Across the median on the right, oncoming cars move steadily without interacting with the ego vehicle.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the queue of vehicles slowing unexpectedly."}
{"id": "train_08349", "split": "train", "clip_key": "titan_clip_165_000060_movie", "source": {"subset": "titan", "scenario": "clip_165", "frame": "000060"}, "frames": ["titan_clip_165_000060_movie_t-3.jpg", "titan_clip_165_000060_movie_t-2.jpg", "titan_clip_165_000060_movie_t-1.jpg", "titan_clip_165_000060_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist ahead", "environment_perception": "A narrow urban side street with no centerline and smooth pavement shows light traffic. An oncoming cyclist on the right side rides toward the ego vehicle in the ego lane because there is no bike lane, keeping close to the curb. Farther ahead near the center-left, another cyclist moves away in the same lane and could set the pace. Pedestrians walk along both sidewalks, with one near the left edge but remaining off the roadway. A zebra crossing spans the foreground, and a scooter is parked by the left curb.", "hazard_reasoning": "There is a cyclist cycling on the right side of the road, in the ego lane, towards the ego car, because there is no bike lane. The driver should be aware of the cyclist moving towards the vehicle to avoid collision."}
{"id": "train_08350", "split": "train", "clip_key": "2020-0204-150838_016791_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "016791"}, "frames": ["2020-0204-150838_016791_movie_t-3.jpg", "2020-0204-150838_016791_movie_t-2.jpg", "2020-0204-150838_016791_movie_t-1.jpg", "2020-0204-150838_016791_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial carries three same-direction lanes with smooth pavement and no visible median, and traffic is heavy and queued near an intersection. A white minivan directly ahead in the ego lane remains stopped, holding the ego vehicle because the signal ahead is red. In the right lane slightly ahead, a white station wagon creeps forward with the queue, potentially overtaking the ego line. In the left lane ahead, a black van also waits, pacing the stop-and-go flow and limiting lateral options. Overhead directional signs for Nihonbashi, Hibiya, Akabanebashi, and Sakuradamon span the road, and the intersection's signal displays red.", "hazard_reasoning": "There is a white minivan stropped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver must stop to avoid colliding with the stationary minivan and comply with the red signal."}
{"id": "train_08351", "split": "train", "clip_key": "2020-0205-152530_020281_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "020281"}, "frames": ["2020-0205-152530_020281_movie_t-3.jpg", "2020-0205-152530_020281_movie_t-2.jpg", "2020-0205-152530_020281_movie_t-1.jpg", "2020-0205-152530_020281_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A tree-lined urban arterial with two lanes in the ego direction and no physical median has smooth pavement and light traffic as the car in the left lane approaches a signalized intersection. A small flatbed truck ahead in the adjacent right lane continues straight through the junction, pulling away and not entering the ego lane. A white sedan to the right-front also proceeds in the right lane toward the intersection, effectively occupying that lane and limiting any immediate right-lane change. Overhead traffic lights are visible above the crosswalk, and no pedestrians or obstacles appear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08352", "split": "train", "clip_key": "titan_clip_170_000372_movie", "source": {"subset": "titan", "scenario": "clip_170", "frame": "000372"}, "frames": ["titan_clip_170_000372_movie_t-3.jpg", "titan_clip_170_000372_movie_t-2.jpg", "titan_clip_170_000372_movie_t-1.jpg", "titan_clip_170_000372_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "be aware of the pedestrian waiting to cross", "environment_perception": "An urban alley-like street runs ahead under an elevated structure, with a single narrow lane, no center line, and dry but worn asphalt; traffic is very light with no moving vehicles. On the left at the near crosswalk, a pedestrian wearing a black T-shirt, blue pants, and a backpack waits to cross and may step into the ego lane. Far ahead under the viaduct, a few pedestrians walk along the roadside without affecting the path. No traffic signal is visible at the junction. Parked bicycles against the right wall and a utility pole near the curb make the entrance to the lane feel tight.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, blue pants, and carrying a backpack, who is at the left side of the road, waiting to cross the street. The pedestrian may enter the roadway unexpectedly, so the driver should stay alert and be prepared to yield."}
{"id": "train_08353", "split": "train", "clip_key": "titan_clip_1210_000594_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1210_000594_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1210_000594_movie_t-3_augB1.jpg", "titan_clip_1210_000594_movie_t-2_augB1.jpg", "titan_clip_1210_000594_movie_t-1_augB1.jpg", "titan_clip_1210_000594_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A busy urban shopping street with a narrow single-lane carriageway paved with interlocking tiles runs between storefronts, with cones lining both sides; traffic is very light. Ahead in the center of the lane, two pedestrians, one in a yellow shirt and one in a black dress, walk away from the ego vehicle, keeping to the middle because construction work and cones occupy the left side, so they constrain the vehicle's pace. On the right edge, a small white truck stands facing the ego vehicle, stopped partly in the roadway and narrowing the available space. Farther ahead near the junction, a few other pedestrians cross the street across the ego path but remain distant.", "hazard_reasoning": "There are two pedestrians wearing a yellow shirt and a black dress, walking in the middle of the road, away from the ego car, because of construction work on the left. The driver should slow down because these pedestrians are walking in the middle of the road, creating a collision risk."}
{"id": "train_08354", "split": "train", "clip_key": "2020-0207-101955_122993_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "122993"}, "frames": ["2020-0207-101955_122993_movie_t-3.jpg", "2020-0207-101955_122993_movie_t-2.jpg", "2020-0207-101955_122993_movie_t-1.jpg", "2020-0207-101955_122993_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with smooth pavement and a curbside shoulder on the right; multiple same-direction lanes are visible and traffic is heavy and mostly stopped. A white van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle at a standstill. In the adjacent lane to the left, a pink refuse truck just ahead waits in the queue and creeps slightly, limiting chances to merge. Farther forward in the left lanes, a tall box truck leads a cluster of vehicles and remains stopped, contributing to the backup and obscuring the view ahead. No signals are in sight, and no unusual hazards appear.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver must stop to avoid a rear-end collision with the halted van."}
{"id": "train_08355", "split": "train", "clip_key": "2020-0127-132751_050542_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "050542"}, "frames": ["2020-0127-132751_050542_movie_t-3.jpg", "2020-0127-132751_050542_movie_t-2.jpg", "2020-0127-132751_050542_movie_t-1.jpg", "2020-0127-132751_050542_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes runs ahead, with oncoming traffic separated to the right by a guardrail median; the pavement appears dry and traffic is heavy and slow. A gray hatchback directly ahead in the ego lane brakes and creeps due to congestion, setting the ego-car's pace. A large city bus alongside in the left lane also slows, keeping close parallel to the ego vehicle and limiting any move left. Farther ahead, a short queue of cars and a small truck proceed slowly in both lanes, extending the slowdown toward an upcoming intersection marked by overhead signal masts.", "hazard_reasoning": "There is a gray hatchback slowing down in the front of the ego-car, in the ego lane, because of traffic congestion ahead. The ego-vehicle must slow down to maintain a safe distance and prevent a collision in the congested traffic."}
{"id": "train_08356", "split": "train", "clip_key": "2020-0220-102630_076985_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "076985"}, "frames": ["2020-0220-102630_076985_movie_t-3.jpg", "2020-0220-102630_076985_movie_t-2.jpg", "2020-0220-102630_076985_movie_t-1.jpg", "2020-0220-102630_076985_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial runs between mid-rise buildings with smooth pavement and no physical median, and same-direction traffic moves slowly in heavy flow. A white van ahead in the ego lane proceeds toward the junction because the signal ahead is green, setting the ego car's pace. In the adjacent right lane, a black car slightly ahead accelerates with the platoon and remains in its lane, posing no immediate encroachment. Farther right, several vans and trucks roll forward in a queue beside the ego lane toward the intersection. The overhead traffic light beyond the overpass shows green.", "hazard_reasoning": "There is a white van moving in the ego lane in front of the ego car, because the light is green. You should follow the vehicle ahead to maintain a safe following distance and react promptly to its speed changes."}
{"id": "train_08357", "split": "train", "clip_key": "titan_clip_646_000276_movie", "source": {"subset": "titan", "scenario": "clip_646", "frame": "000276"}, "frames": ["titan_clip_646_000276_movie_t-3.jpg", "titan_clip_646_000276_movie_t-2.jpg", "titan_clip_646_000276_movie_t-1.jpg", "titan_clip_646_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street with smooth pavement and no median is shown, the ego car proceeding in the left half amid very light vehicle traffic but heavy pedestrian activity. A man in a black coat walks toward the ego along the right edge, partly in the roadway because the sidewalk is crowded, and may encroach on the ego lane. A group of pedestrians ahead on the right, including a woman pushing a stroller, also approaches in the roadway and reduces the available space. Another man ahead near the center walks toward the ego in the middle of the lane, directly in the path. Pedestrians on the left sidewalk move away and do not affect the lane.", "hazard_reasoning": "There is a pedestrian wearing a black coat and walking on the right side of the street, toward the ego car, because there are people walking on the sidewalk. The driver should slow down to anticipate the pedestrian's movement and avoid a potential collision."}
{"id": "train_08358", "split": "train", "clip_key": "2020-0227-104226_004456_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "004456"}, "frames": ["2020-0227-104226_004456_movie_t-3.jpg", "2020-0227-104226_004456_movie_t-2.jpg", "2020-0227-104226_004456_movie_t-1.jpg", "2020-0227-104226_004456_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and a raised median to the right leads to a large signalized intersection; traffic is heavy and mostly stopped. A white van directly ahead in the ego lane is stopped for a red light, holding the ego vehicle in place. To the left, a queue of cars creeps forward in the adjacent lane alongside the ego vehicle, limiting room to maneuver. A light truck sits close in the far-left lane, edging ahead slowly but remaining parallel to the ego lane. Numerous pedestrians gather at the corners and some cross the intersection on the marked crosswalks. The traffic signal ahead shows red.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because the light is red. The driver must stop to avoid colliding with the stationary vehicle ahead at the red light."}
{"id": "train_08359", "split": "train", "clip_key": "titan_clip_1381_000072_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1381_000072_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1381_000072_movie_t-3_augB1.jpg", "titan_clip_1381_000072_movie_t-2_augB1.jpg", "titan_clip_1381_000072_movie_t-1_augB1.jpg", "titan_clip_1381_000072_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow undivided lane and smooth pavement; traffic is light and slow. Ahead in the center of the lane, a pedestrian in a blue T-shirt pushes a trolley away from the ego vehicle along the middle of the road, using it because the street lacks a sidewalk and remaining in the path. Farther ahead on the right edge, a white van is pulled over and barely moving, narrowing the lane. Next to the van on the right, another pedestrian walks along the curb and may step into the lane in the constrained space.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt, pushing a trolley in the middle of the road, away from the ego car, because there is no sidewalk. The pedestrian has moved into the driving lane and may collide with the ego-vehicle, so the driver should slow down."}
{"id": "train_08360", "split": "train", "clip_key": "2020-0226-140503_000091_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "000091"}, "frames": ["2020-0226-140503_000091_movie_t-3.jpg", "2020-0226-140503_000091_movie_t-2.jpg", "2020-0226-140503_000091_movie_t-1.jpg", "2020-0226-140503_000091_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "An urban commercial street with two lanes in the ego direction and no median is shown, the asphalt dry and traffic light. A black van is stopped at the left curb with its rear hatch open, protruding into the ego lane and narrowing the path. Ahead of it, a pedestrian wearing black pants and a brown coat and carrying a briefcase crosses mid-block from the left sidewalk toward the right, moving through the ego lane and constraining the vehicle's pace. Several other pedestrians walk along the sidewalks near the storefronts and wait near the curb but do not enter the road. A no-parking sign is posted on a pole by the curb.", "hazard_reasoning": "There is a pedestrian wearing black pants and a brown coat, carrying a briefcase, and crossing the street in the middle of the road from the left to the right side. The driver should yield to allow the pedestrian to cross safely."}
{"id": "train_08361", "split": "train", "clip_key": "2020-0205-103411_073264_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "073264"}, "frames": ["2020-0205-103411_073264_movie_t-3.jpg", "2020-0205-103411_073264_movie_t-2.jpg", "2020-0205-103411_073264_movie_t-1.jpg", "2020-0205-103411_073264_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement approaches a signalized intersection, and traffic moves at a moderate pace. A small white flatbed truck with a ladder rack travels ahead in the ego lane and eases toward the junction, constraining the ego car. Farther ahead in the same lane, a gray truck drives away from the ego car, continuing straight and leading the stream. On the left near the curb, a white van is stopped at the roadside and does not affect the lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08362", "split": "train", "clip_key": "2020-0210-155354_035443_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "035443"}, "frames": ["2020-0210-155354_035443_movie_t-3.jpg", "2020-0210-155354_035443_movie_t-2.jpg", "2020-0210-155354_035443_movie_t-1.jpg", "2020-0210-155354_035443_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of scooter cutting in", "environment_perception": "An urban arterial with three same-direction lanes and smooth asphalt carries heavy, stop-and-go traffic through a dense cityscape, with a fence along the left curb and no clear median. A black hatchback directly ahead in the center lane creeps and halts, controlling the ego car's pace. A scooter travels between the right and center lanes in front of the ego car, filtering forward to get ahead of traffic and potentially entering the ego lane. To the left, a white van in the curb lane inches along beside the ego car, remaining parallel. On the right, a dark sedan queues slowly in the outer lane close to the vehicle ahead. Large blue overhead direction signs are visible above the roadway.", "hazard_reasoning": "There is a scooter traveling between the right and center lanes in front of the ego car, in order to get ahead of traffic. The scooter is cutting between lanes and may merge unexpectedly into the ego vehicle's path, so the driver should anticipate its movement and maintain a safe following distance."}
{"id": "train_08363", "split": "train", "clip_key": "2020-0127-132751_098464_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "098464"}, "frames": ["2020-0127-132751_098464_movie_t-3.jpg", "2020-0127-132751_098464_movie_t-2.jpg", "2020-0127-132751_098464_movie_t-1.jpg", "2020-0127-132751_098464_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with no median runs through a mixed-use area; the pavement is worn but even, and traffic moves slowly near an intersection. A gray van directly ahead in the ego lane slows, queuing because a large box truck further ahead is turning left across the junction and blocks the path. An oncoming white truck approaches in the opposite lane to the right and continues straight past the turning area, remaining separate from the ego lane.", "hazard_reasoning": "There is a gray van slowing down in the ego lane in front of the ego car, because a truck ahead is turning left. The driver should slow down to match the van's speed and keep a safe distance to prevent a rear-end collision."}
{"id": "train_08364", "split": "train", "clip_key": "titan_clip_623_000378_movie", "source": {"subset": "titan", "scenario": "clip_623", "frame": "000378"}, "frames": ["titan_clip_623_000378_movie_t-3.jpg", "titan_clip_623_000378_movie_t-2.jpg", "titan_clip_623_000378_movie_t-1.jpg", "titan_clip_623_000378_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with block-paved surface lacks a centerline, and traffic is light with mostly stationary vehicles as buildings line both sides. Near-ahead on the left, a man in a blue shirt and black pants pushes a piece of luggage toward the ego vehicle along the roadway because of the parked vehicle, and he may drift into the vehicle's path. Farther ahead near the center, two pedestrians walk away along the lane, remaining in the path of travel. A flatbed truck stands on the left partly protruding into the roadway and a white van is stopped on the right, creating a pinch point, while a bicycle is parked at the left curb.", "hazard_reasoning": "There is a man wearing a blue shirt and black pants, pushing a piece of luggage, and walking on the left side of the road, toward the ego car, because of the parked vehicle. The pedestrian may enter the vehicle's path unexpectedly due to the sidewalk obstruction, so the driver should slow down."}
{"id": "train_08365", "split": "train", "clip_key": "2020-0204-103442_088761_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "088761"}, "frames": ["2020-0204-103442_088761_movie_t-3.jpg", "2020-0204-103442_088761_movie_t-2.jpg", "2020-0204-103442_088761_movie_t-1.jpg", "2020-0204-103442_088761_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated bridge carries two lanes in the ego direction, bounded by guardrails, with smooth pavement and steady moderate traffic. A white van directly ahead in the ego lane drives away from the camera at a constant pace, gradually increasing the gap. In the adjacent left lane, a black hatchback runs slightly behind the van and continues straight without lane changes, parallel to the ego path. Farther ahead, several cars occupy both lanes and move smoothly toward the cityscape. Oncoming traffic is separated and not visible. Overhead blue directional signs with arrows indicate upcoming route choices. No pedestrians, cyclists, or obstacles are present.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08366", "split": "train", "clip_key": "2020-0127-132751_024135_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "024135"}, "frames": ["2020-0127-132751_024135_movie_t-3.jpg", "2020-0127-132751_024135_movie_t-2.jpg", "2020-0127-132751_024135_movie_t-1.jpg", "2020-0127-132751_024135_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban road runs under an elevated expressway, with two same-direction lanes on red asphalt separated by a chevron-marked island; the pavement is smooth and traffic is light but paused at a signal. A white hatchback directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. A white van ahead in the right lane rolls toward the intersection and queues at the same signal. A pedestrian walks along the sidewalk by the right guardrail, well clear of the roadway. The traffic light ahead shows red.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of the red traffic light. The driver needs to stop to avoid a collision with the halted vehicle at the red signal."}
{"id": "train_08367", "split": "train", "clip_key": "titan_clip_362_000300_movie", "source": {"subset": "titan", "scenario": "clip_362", "frame": "000300"}, "frames": ["titan_clip_362_000300_movie_t-3.jpg", "titan_clip_362_000300_movie_t-2.jpg", "titan_clip_362_000300_movie_t-1.jpg", "titan_clip_362_000300_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian on roadway", "environment_perception": "An urban residential scene shows a narrow two-way street without a centerline, bordered by buildings and hedges; the pavement is smooth and traffic is light. On the right edge ahead, a pedestrian in black pants carrying a bag in each hand walks away from the ego vehicle along the curb because there is no sidewalk, moving within the shoulder and possibly entering the lane. Near the near-right, a man in a dark suit walks toward the camera along the edge, narrowing the path for the ego vehicle. A white van stands parked on the left partly intruding into the lane. A painted 20 speed limit marking is visible.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying two bags, one in each hand, walking on the right side of the road, away from the ego car, because there is no sidewalk. The driver should be cautious because the pedestrian's proximity to moving traffic increases the risk of collision."}
{"id": "train_08368", "split": "train", "clip_key": "2020-0210-155354_003466_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "003466"}, "frames": ["2020-0210-155354_003466_movie_t-3.jpg", "2020-0210-155354_003466_movie_t-2.jpg", "2020-0210-155354_003466_movie_t-1.jpg", "2020-0210-155354_003466_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban commercial street with one lane in each direction and no median runs straight on dry pavement, with guardrails edging busy sidewalks and light to moderate traffic. A white sedan ahead in the ego lane slows, constraining the ego car's pace. In the opposite lane, a black minivan approaches steadily, continuing straight past the storefronts. At the left edge of the foreground crosswalk, a pedestrian stands near the curb and waits, close to the ego vehicle's path. Several cars are stopped along the right curb, slightly narrowing the usable lane.", "hazard_reasoning": "There is a white sedan slowing in the ego lane, in front of the ego car. The driver should slow down to avoid a collision due to the sedan's reduced speed."}
{"id": "train_08369", "split": "train", "clip_key": "2020-0218-151547_003458_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "003458"}, "frames": ["2020-0218-151547_003458_movie_t-3.jpg", "2020-0218-151547_003458_movie_t-2.jpg", "2020-0218-151547_003458_movie_t-1.jpg", "2020-0218-151547_003458_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction runs between tall buildings, with a concrete barrier on the right separating a parallel roadway; the pavement is smooth and traffic is moderate, queued at a signalized intersection. A silver hatchback directly ahead in the ego lane stands still at the stop line because the overhead traffic light is red, holding the ego car. A white van slightly ahead in the left adjacent lane also waits, constraining progress at the same light. To the left rear, a dark blue car edges forward alongside within its lane but remains behind the ego vehicle. On the parallel roadway to the right, a small truck proceeds forward in the same direction, separated by the barrier and not interacting.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car, because of a red traffic light. The driver must slow and prepare to stop to avoid a collision with the halted vehicle at the red light."}
{"id": "train_08370", "split": "train", "clip_key": "2020-0203-154554_080201_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "080201"}, "frames": ["2020-0203-154554_080201_movie_t-3.jpg", "2020-0203-154554_080201_movie_t-2.jpg", "2020-0203-154554_080201_movie_t-1.jpg", "2020-0203-154554_080201_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road lined with trees and mid-rise buildings extends ahead under low sun. The ego travels in a single left lane on dry, well-marked pavement, divided from oncoming traffic by a painted chevron buffer, and overall flow is heavy and slow. A white sedan ahead in the ego lane slows because of traffic congestion ahead and sets the pace. Farther ahead in the same lane, a white van creeps in the queue. On the right, an oncoming white hatchback continues straight in its lane beyond the painted buffer with no interaction. Along the left curb, a black sedan sits stopped near the ego path. Bright glare toward the horizon reduces visibility slightly.", "hazard_reasoning": "There is a white sedan slowing in the ego lane, away from the ego car, because of traffic congestion ahead. Slow down to match the reduced speed and maintain safe distance in the congested traffic."}
{"id": "train_08371", "split": "train", "clip_key": "titan_clip_1346_000120_movie", "source": {"subset": "titan", "scenario": "clip_1346", "frame": "000120"}, "frames": ["titan_clip_1346_000120_movie_t-3.jpg", "titan_clip_1346_000120_movie_t-2.jpg", "titan_clip_1346_000120_movie_t-1.jpg", "titan_clip_1346_000120_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three same-direction lanes and a metal guard median runs between office buildings; pavement is smooth and traffic remains light. The ego vehicle proceeds in the leftmost lane alongside a marked bicycle lane near the curb. Far ahead in the center lane, a small truck continues at a steady pace without affecting the ego path. Slightly right and farther ahead, a passenger car travels in the right lane at similar speed. On the opposite carriageway beyond the median, a few cars and a van move toward the camera in light oncoming flow.", "hazard_reasoning": "No immediate hazards are present as the road ahead is clear, visibility is good, and traffic is minimal, so the driver can continue driving as normal."}
{"id": "train_08372", "split": "train", "clip_key": "2020-0127-132751_002348_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "002348"}, "frames": ["2020-0127-132751_002348_movie_t-3.jpg", "2020-0127-132751_002348_movie_t-2.jpg", "2020-0127-132751_002348_movie_t-1.jpg", "2020-0127-132751_002348_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian crossing", "environment_perception": "An urban arterial with several lanes in the ego direction approaches a wide signalized intersection, with no physical median and dry, well?arked pavement; traffic is light in both directions. On the right ahead, a white minivan in the right-turn lane rolls slowly toward the crosswalk, moving parallel to the ego and potentially constraining the approach to the stop line. On the left, a pedestrian is about to cross the left crosswalk away from the ego car, standing at the near edge of the zebra as the vehicle nears. At the right corner, a small group of pedestrians waits by the curb without stepping off. A silver hatchback is parked tight to the left curb just before the intersection, narrowing the shoulder.", "hazard_reasoning": "There is a pedestrian about to cross the left crosswalk in the direction away from the ego car. The pedestrian may step onto the roadway unexpectedly, so the driver should be aware to anticipate crossing movement."}
{"id": "train_08373", "split": "train", "clip_key": "titan_clip_255_000522_movie", "source": {"subset": "titan", "scenario": "clip_255", "frame": "000522"}, "frames": ["titan_clip_255_000522_movie_t-3.jpg", "titan_clip_255_000522_movie_t-2.jpg", "titan_clip_255_000522_movie_t-1.jpg", "titan_clip_255_000522_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene is an urban street with one narrow lane in each direction and no centerline, bordered by tall buildings; the pavement is smooth and partly shaded, and traffic is light. Construction scaffolding and cones line the left edge, narrowing the roadway. A small van ahead in the ego lane moves away slowly and sets the pace. On the left side of the road a pedestrian in a white shirt and black pants walks away from the ego car along the edge because the sidewalk is blocked by construction, and he may enter the lane. On the right sidewalk another pedestrian walks toward the ego near the curb while remaining off the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the left side of the road away from the ego car, because of the construction work on the left. The driver should slow down because the pedestrian walking on the roadway could step into the vehicle's path unexpectedly near the construction zone."}
{"id": "train_08374", "split": "train", "clip_key": "2020-0228-102841_005660_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "005660"}, "frames": ["2020-0228-102841_005660_movie_t-3.jpg", "2020-0228-102841_005660_movie_t-2.jpg", "2020-0228-102841_005660_movie_t-1.jpg", "2020-0228-102841_005660_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "A busy urban multi-lane intersection is lined with temporary construction barriers that narrow the approaches; the pavement is dry and intact, and traffic in the ego direction is halted at the light. Directly ahead at the zebra crossing, there are people crossing in front of the ego car, with several pedestrians walking across the ego lane from both sides and filling the crosswalk. On the right, a cyclist enters the crosswalk and rides leftward across the lane ahead of the vehicle. A few vehicles are visible along the cross street beyond the crossing. Overhead traffic signals facing the ego show red, while cones and barricades mark the work zone but do not block the crossing.", "hazard_reasoning": "There are people crossing a crosswalk on the street, in front of the ego-car. The pedestrians are entering the vehicle's path, requiring the driver to stop to avoid a collision."}
{"id": "train_08375", "split": "train", "clip_key": "2020-0227-104226_100326_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "100326"}, "frames": ["2020-0227-104226_100326_movie_t-3.jpg", "2020-0227-104226_100326_movie_t-2.jpg", "2020-0227-104226_100326_movie_t-1.jpg", "2020-0227-104226_100326_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection with smooth pavement and moderate same-direction traffic; guardrails and parked cars line the left curb and a pedestrian overpass spans the right. Ahead in the ego lane, a white box truck accelerates through the junction on a green light and pulls away from the camera vehicle. In the lane to the right, a white van runs slightly faster and continues straight beside and then ahead of the truck's path. Farther right, a gray car proceeds straight in its own lane at a steady pace with no lane changes. The traffic signal facing the ego direction shows green.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car, because of a green traffic light. Follow the vehicle ahead to maintain safe distance and prepare for a stop under the red signal."}
{"id": "train_08376", "split": "train", "clip_key": "titan_clip_895_000168_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_895_000168_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_895_000168_movie_t-3_augB1.jpg", "titan_clip_895_000168_movie_t-2_augB1.jpg", "titan_clip_895_000168_movie_t-1_augB1.jpg", "titan_clip_895_000168_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of crossing pedestrian", "environment_perception": "A narrow urban shopping street with a single undivided lane and smooth asphalt is seen in daylight, with light vehicle flow but many pedestrians and no median. On the left foreground, a large box truck passes close alongside the ego vehicle and occupies part of the lane, narrowing the corridor. Ahead near the center, a pedestrian wearing a blue shirt crosses to the left side of the road, moving through the lane the ego vehicle is following and briefly occupying its path. Farther ahead, a small light-blue truck continues straight in the same lane, moving away and potentially setting the pace for the ego vehicle.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, crossing to the left side of the road. The driver should be aware of the crossing pedestrian because they may step into the vehicle's path."}
{"id": "train_08377", "split": "train", "clip_key": "2020-0207-101955_018127_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_018127_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_018127_movie_t-3_augB1.jpg", "2020-0207-101955_018127_movie_t-2_augB1.jpg", "2020-0207-101955_018127_movie_t-1_augB1.jpg", "2020-0207-101955_018127_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban street with two same-direction lanes shows dry, slightly worn pavement and moderate, slowing traffic. A dark tarp-covered mini-truck ahead in the ego lane slows, matching a truck braking further ahead, which constrains the ego vehicle's pace. To the right, a large crane truck is stopped along the lane line and partly intrudes into the adjacent lane, reducing usable width and discouraging a lane change. Farther ahead in the right lane, a white van moves slowly past the obstruction, contributing to the gradual flow.", "hazard_reasoning": "There is a black truck slowing in the ego lane, away from the ego car, because of the truck slowing ahead. The slowing truck may require sudden braking, so the driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_08378", "split": "train", "clip_key": "titan_clip_1242_000552_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1242_000552_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1242_000552_movie_t-3_augB1.jpg", "titan_clip_1242_000552_movie_t-2_augB1.jpg", "titan_clip_1242_000552_movie_t-1_augB1.jpg", "titan_clip_1242_000552_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban residential street with a single narrow two-way carriageway and no centerline comes into view; the ego vehicle proceeds along the left side on smooth but tight pavement, with traffic light to nonexistent. The road curves slightly right toward a small junction ahead, and construction cones line both sides, with scaffolding covering a building on the left, narrowing the edge. A tall pedestrian in a white T-shirt and black pants carrying a handbag walks toward the ego car along the left side of the roadway, moving partly within the lane and potentially entering the vehicle's path. No other vehicles or cyclists are visible, and no active traffic signals appear.", "hazard_reasoning": "The tall pedestrian in a white t-shirt and black pants, with a handbag, is walking on the left side of the road, towards the ego car. The pedestrian may step into the vehicle's path unexpectedly, so the driver should manoeuvre carefully around them."}
{"id": "train_08379", "split": "train", "clip_key": "titan_clip_299_000510_movie", "source": {"subset": "titan", "scenario": "clip_299", "frame": "000510"}, "frames": ["titan_clip_299_000510_movie_t-3.jpg", "titan_clip_299_000510_movie_t-2.jpg", "titan_clip_299_000510_movie_t-1.jpg", "titan_clip_299_000510_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with smooth pavement and no median runs between close buildings, and traffic is very light with no oncoming vehicles visible as the ego car proceeds on the left. Ahead on the right edge of the roadway, a pedestrian in brown pants walks away from the ego vehicle because the sidewalk is obstructed by a parked car, briefly occupying part of the lane. Just beyond him, a small silver hatchback is parked along the right shoulder and juts slightly into the carriageway, constraining space to pass. A dark car sits stationary in a right-side driveway and remains out of the lane.", "hazard_reasoning": "There is a pedestrian wearing brown pant walking away from the ego car on the right side of the road because the sidewalk has been obstructed by a vehicle. The driver should slow down because the pedestrian may step onto the road unexpectedly from the blocked sidewalk."}
{"id": "train_08380", "split": "train", "clip_key": "2020-0203-114632_012045_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "012045"}, "frames": ["2020-0203-114632_012045_movie_t-3.jpg", "2020-0203-114632_012045_movie_t-2.jpg", "2020-0203-114632_012045_movie_t-1.jpg", "2020-0203-114632_012045_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around cones", "environment_perception": "An urban two-way road climbs toward a signalized intersection with a broad crosswalk; pavement appears sound and traffic is light. Red construction cones on the right channel traffic and indicate the ego vehicle should follow a gentle leftward bend past a work area. A green bus ahead in the ego lane is stopped at the red light, setting the pace. Several pedestrians cluster on the right sidewalk near the crosswalk, waiting to cross and potentially entering when the signal changes. A lone pedestrian on the left by the fence walks toward the crossing but stays off the roadway. The overhead signal shows red for the ego approach.", "hazard_reasoning": "There are red construction cones on the right side of the road, indicating that the ego-car should follow a left curve in the road. The cones mark a construction area and require the driver to manoeuvre left to avoid them."}
{"id": "train_08381", "split": "train", "clip_key": "titan_clip_673_000402_movie", "source": {"subset": "titan", "scenario": "clip_673", "frame": "000402"}, "frames": ["titan_clip_673_000402_movie_t-3.jpg", "titan_clip_673_000402_movie_t-2.jpg", "titan_clip_673_000402_movie_t-1.jpg", "titan_clip_673_000402_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential scene shows a narrow two-way street with worn, patched pavement leading to a level railway crossing; there is no median and traffic is light with no opposing vehicles. Ahead in the ego lane, a man wearing blue pants and a cream shirt cycles away toward the tracks, occupying the lane and effectively setting the car's pace. To the left near the fence, pedestrians walk toward the crossing and then cross the roadway by the gates, close to the vehicle path. On the right edge by a signal post, another person stands near the curb beside the crossing, close to the lane. The crossing has raised barriers with warning lights, and a covered car is parked in a driveway on the right.", "hazard_reasoning": "There is a man wearing a pair of blue pants, and a cream shirt, cycling in the ego lane, away from the ego car. The driver should slow down to ensure safe separation from the cyclist in the ego lane."}
{"id": "train_08382", "split": "train", "clip_key": "2020-0225-145150_039250_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "039250"}, "frames": ["2020-0225-145150_039250_movie_t-3.jpg", "2020-0225-145150_039250_movie_t-2.jpg", "2020-0225-145150_039250_movie_t-1.jpg", "2020-0225-145150_039250_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with two same-direction lanes runs between mid-rise buildings; the pavement looks clean and dry, and traffic is heavy with a slow-moving queue toward an intersection ahead. A blue truck directly ahead in the ego lane slows and creeps because of congestion, effectively controlling the ego car's pace. In the adjacent left lane, a covered light truck travels slightly ahead at a similar slow speed, staying in its lane alongside. Farther ahead in the ego lane, a small white van also brakes into the queue as vehicles compress toward the junction, where overhead traffic lights are visible.", "hazard_reasoning": "There is a blue truck slowing down in front of the ego car, because of traffic congestion ahead in the ego lane. The driver should slow down to maintain a safe following distance and prevent a rear-end collision under the reduced-speed conditions."}
{"id": "train_08383", "split": "train", "clip_key": "2020-0225-102455_036130_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "036130"}, "frames": ["2020-0225-102455_036130_movie_t-3.jpg", "2020-0225-102455_036130_movie_t-2.jpg", "2020-0225-102455_036130_movie_t-1.jpg", "2020-0225-102455_036130_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes is divided from oncoming traffic to the right by a low hedged median, and the pavement appears in good condition with moderate flow that pauses at a signal. Overhead lights show red. A white sedan is stopped directly ahead in the ego lane because of the red light, holding the ego vehicle. Farther ahead in the same lane, a large box truck is also stopped at the line, preventing any advance. On the left near the curb, a motorcyclist edges forward beside the queue and comes to a wait near the truck. Oncoming vehicles move steadily on the opposite side of the median. A small work crew stands on the left shoulder next to a parked utility truck, remaining outside the travel lane.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car in the ego lane, because of a red traffic light. The driver should stop to avoid a collision with the halted vehicle and obey the red signal."}
{"id": "train_08384", "split": "train", "clip_key": "2020-0227-104226_097496_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "097496"}, "frames": ["2020-0227-104226_097496_movie_t-3.jpg", "2020-0227-104226_097496_movie_t-2.jpg", "2020-0227-104226_097496_movie_t-1.jpg", "2020-0227-104226_097496_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial in Japan with two same-direction lanes and a right-side barrier has serviceable pavement, and traffic moves in heavy, slow stop-and-go flow. The red SUV directly ahead in the ego lane slows and inches forward because of congestion ahead, setting the ego vehicle's pace. In the adjacent right lane, a white minivan travels alongside at similar low speed, occasionally edging ahead and constraining any lane change. Farther ahead in the queue, a white box truck leads a cluster of cars, reinforcing the slowdown. Storefronts and a bicycle-lined sidewalk run along the left, and no oncoming traffic is visible.", "hazard_reasoning": "There is a red SUV slowing down in the ego lane, because of traffic congestion ahead. The red SUV's reduced speed signals a buildup of vehicles ahead, so the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_08385", "split": "train", "clip_key": "2020-0204-103442_084449_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "084449"}, "frames": ["2020-0204-103442_084449_movie_t-3.jpg", "2020-0204-103442_084449_movie_t-2.jpg", "2020-0204-103442_084449_movie_t-1.jpg", "2020-0204-103442_084449_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-end collision", "environment_perception": "On a suburban two-way road with one lane each way and a striped divider, the pavement looks smooth and dry and traffic is light as the approach leads to a signalized intersection. Directly ahead in the ego lane, a silver car is stopped because the signal is red, keeping the ego vehicle stationary. An oncoming car proceeds through the junction in the opposite lane without affecting the ego path. Overhead traffic lights show red for the ego direction. Metal railings and a chevron-marked gore separate a right-side slip area, and no obstacles appear in the ego lane.", "hazard_reasoning": "There is a silver SUV stopped in front of the ego car in the ego lane, because of a red traffic light. The driver must stop to comply with the traffic signal and avoid a rear-end collision."}
{"id": "train_08386", "split": "train", "clip_key": "titan_clip_1356_000102_movie", "source": {"subset": "titan", "scenario": "clip_1356", "frame": "000102"}, "frames": ["titan_clip_1356_000102_movie_t-3.jpg", "titan_clip_1356_000102_movie_t-2.jpg", "titan_clip_1356_000102_movie_t-1.jpg", "titan_clip_1356_000102_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "An urban commercial street with one narrow lane each way and no median runs between shops, the pavement in good condition and traffic light as the road bends slightly right. On the left edge ahead, a cyclist wearing a white shirt and black pants rides toward the ego vehicle along the curb and may enter the ego lane. On the right, a pedestrian walks beside bollards near the curb close to the travel lane. Farther ahead, a small white van moves slowly in the oncoming lane near the bend. A posted 10 speed limit sign is visible on a pole to the left, and bicycles are parked along the storefronts.", "hazard_reasoning": "A cyclist wearing black pants and a white shirt is cycling on the left side of the road, toward the ego car. The cyclist's position on this narrow street limits reaction space, so the driver should carefully manoeuvre to maintain a safe distance and avoid collision."}
{"id": "train_08387", "split": "train", "clip_key": "2020-0205-152530_034525_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "034525"}, "frames": ["2020-0205-152530_034525_movie_t-3.jpg", "2020-0205-152530_034525_movie_t-2.jpg", "2020-0205-152530_034525_movie_t-1.jpg", "2020-0205-152530_034525_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane boulevard with a landscaped median runs straight between tall buildings; the pavement is smooth and dry, and traffic moves at a moderate, steady pace. The ego vehicle travels on the left-side carriageway with several same-direction lanes. A line of cars and light vans ahead in the middle lanes continues straight and sets the cruising speed. A black minivan near the left curb slightly ahead proceeds slowly along the edge and may merge into the ego lane. Far to the right, separated by the shrub median, oncoming traffic flows in the opposite carriageway. No signals or work zones stand out, and there are no visible obstructions in the lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08388", "split": "train", "clip_key": "2020-0207-151349_012362_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "012362"}, "frames": ["2020-0207-151349_012362_movie_t-3.jpg", "2020-0207-151349_012362_movie_t-2.jpg", "2020-0207-151349_012362_movie_t-1.jpg", "2020-0207-151349_012362_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "In a dense urban area, the ego travels on a curving multi-lane arterial with a concrete median to the right and smooth pavement, and traffic is moderate and bunches near an intersection. A white van directly ahead in the ego lane is stopped at the line because the signal ahead is red, holding the ego vehicle. A larger box truck sits farther ahead in the same lane also waiting at the light, extending the queue. On the separated roadway to the right, several cars creep forward parallel to the ego but are divided by the barrier and do not interact. Overhead traffic lights show red for the ego direction, and strong sun glare enters from the right.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because of a red traffic light. Driver should stop to maintain a safe distance and comply with the traffic signal to avoid a collision."}
{"id": "train_08389", "split": "train", "clip_key": "2020-0131-135401_081568_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "081568"}, "frames": ["2020-0131-135401_081568_movie_t-3.jpg", "2020-0131-135401_081568_movie_t-2.jpg", "2020-0131-135401_081568_movie_t-1.jpg", "2020-0131-135401_081568_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated two-way road with a single lane in each direction runs between mid-rise apartments, the pavement dry and in good condition as the route descends gently; traffic is light and flows steadily. A black minivan ahead in the left lane, the ego lane in Japan, cruises at a constant speed and loosely sets the pace. Farther ahead in the same lane, a small white van continues downhill, increasing the gap. In the oncoming lane to the right, a white car approaches and passes without deviation. Concrete barriers line both sides and there are no pedestrians, cyclists, or obvious signs.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08390", "split": "train", "clip_key": "2020-0210-101957_079812_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "079812"}, "frames": ["2020-0210-101957_079812_movie_t-3.jpg", "2020-0210-101957_079812_movie_t-2.jpg", "2020-0210-101957_079812_movie_t-1.jpg", "2020-0210-101957_079812_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "In a suburban area, the view shows a two-way road with one lane each direction, a solid yellow centerline, smooth pavement, and close metal guardrails, and traffic is light as the road climbs slightly. A large yellow work truck is directly ahead in the ego lane, driving away uphill along clear road and effectively setting the ego vehicle's pace. A few cars approach in the oncoming lane to the right and pass within their lane without affecting the ego path. Houses line both sides and no pedestrians are visible.", "hazard_reasoning": "There is a yellow truck driving in the ego lane, away from the ego car, because the road ahead is clear. Follow the vehicle ahead to maintain safe distance and anticipate hazards hidden by the truck."}
{"id": "train_08391", "split": "train", "clip_key": "2020-0210-101957_065249_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "065249"}, "frames": ["2020-0210-101957_065249_movie_t-3.jpg", "2020-0210-101957_065249_movie_t-2.jpg", "2020-0210-101957_065249_movie_t-1.jpg", "2020-0210-101957_065249_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of the pedestrian waiting to cross.", "environment_perception": "An urban divided boulevard with two lanes in the ego direction runs straight with a low hedge median separating oncoming traffic; the pavement is smooth and dry and traffic is light. A small white van ahead in the left lane travels steadily in the ego lane and sets the pace. A white passenger car slightly ahead in the right lane continues straight and pulls away without merging. On the left sidewalk, a pedestrian wearing a white coat stands near the curb as if waiting to cross, potentially entering the ego lane. Far ahead, traffic lights mark an upcoming intersection.", "hazard_reasoning": "There is a pedestrian wearing a white coat on the left side of the road, who is waiting to cross the street. The driver should be aware because the pedestrian might step into the roadway unexpectedly, requiring early attention to avoid a potential collision."}
{"id": "train_08392", "split": "train", "clip_key": "titan_clip_777_000168_movie", "source": {"subset": "titan", "scenario": "clip_777", "frame": "000168"}, "frames": ["titan_clip_777_000168_movie_t-3.jpg", "titan_clip_777_000168_movie_t-2.jpg", "titan_clip_777_000168_movie_t-1.jpg", "titan_clip_777_000168_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian and handcart", "environment_perception": "An urban narrow two-way street with no center divider extends ahead on patched asphalt, and traffic is light. On the right side ahead, a person pushes a handcart toward the ego vehicle, walking partly in the lane because another pedestrian occupies the right shoulder, so the cart user may encroach on the ego path. Along that right shoulder, a pedestrian walks toward the camera close to the curb, limiting space. Far ahead in the same lane, a small car travels away and does not affect the pace.", "hazard_reasoning": "There is a pedestrian pushing a handcart and walking on the right side of the road, towards the ego car, because of another pedestrian on the right shoulder. The pedestrian and handcart are moving toward the vehicle's path, so the driver should manoeuvre carefully around them to maintain safe clearance."}
{"id": "train_08393", "split": "train", "clip_key": "titan_clip_103_000522_movie", "source": {"subset": "titan", "scenario": "clip_103", "frame": "000522"}, "frames": ["titan_clip_103_000522_movie_t-3.jpg", "titan_clip_103_000522_movie_t-2.jpg", "titan_clip_103_000522_movie_t-1.jpg", "titan_clip_103_000522_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "A narrow two-way urban street with brick paving runs between tall buildings, with no median and light, slow traffic as the ego vehicle proceeds along the left side. A white van ahead near the center of the ego lane slows and creeps forward, constraining the ego car's pace while passing pedestrians. On the right edge, a lady wearing a black dress and carrying a handbag walks toward the ego car along the curb and may step into the lane. A teal taxi stands at the left curb close to the ego vehicle, its body slightly protruding into the roadway and narrowing the available space.", "hazard_reasoning": "There is a lady, wearing a black dress and carrying a handbag, walking, on the right side of the road, toward the ego car. The pedestrian is entering the vehicle's path, so the driver should yield to prevent a collision."}
{"id": "train_08394", "split": "train", "clip_key": "titan_clip_549_000444_movie", "source": {"subset": "titan", "scenario": "clip_549", "frame": "000444"}, "frames": ["titan_clip_549_000444_movie_t-3.jpg", "titan_clip_549_000444_movie_t-2.jpg", "titan_clip_549_000444_movie_t-1.jpg", "titan_clip_549_000444_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "A narrow urban one-lane street lined with shops has smooth pavement and no median; vehicle traffic is light while pedestrian activity is heavy. Ahead in the center of the lane, a backpacked pedestrian walks away from the ego in the middle of the road, effectively occupying the path as the sidewalks appear congested. Near the right edge, two pedestrians walk toward the ego partly in the carriageway, reducing clearance along the usable lane. Farther ahead, a small group of pedestrians continues in the same direction along the road, remaining in front of the ego's intended path. An open parking-garage entrance and nearby signboards on the left further tighten the corridor.", "hazard_reasoning": "There is a lady, wearing a white t-shirt and a brown skirt, carrying a backpack, walking in the middle of the road, away from the ego car, because the sidewalk is congested. The driver should manoeuvre carefully around the pedestrian to avoid a collision and ensure safety."}
{"id": "train_08395", "split": "train", "clip_key": "titan_clip_137_000402_movie", "source": {"subset": "titan", "scenario": "clip_137", "frame": "000402"}, "frames": ["titan_clip_137_000402_movie_t-3.jpg", "titan_clip_137_000402_movie_t-2.jpg", "titan_clip_137_000402_movie_t-1.jpg", "titan_clip_137_000402_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way street with one lane per direction and no median runs between mid-rise buildings; the asphalt is smooth and traffic is light. Ahead on the left side of the road, a pedestrian wearing black pants and a striped T-shirt pushes a cart away from the ego car along the edge of the lane, narrowing the usable path. Far ahead in the oncoming lane, a small white van approaches through the intersection and continues straight. At the right-side zebra crossing, a man in a white shirt stands at the curb without stepping into the roadway.", "hazard_reasoning": "There is a pedestrian wearing black pants, a striped t-shirt, and pushing a cart, who is walking on the left side of the road, away from the ego car. The driver should manoeuvre carefully around the pedestrian pushing a cart to avoid a potential collision as they approach your path."}
{"id": "train_08396", "split": "train", "clip_key": "2020-0225-102455_030855_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "030855"}, "frames": ["2020-0225-102455_030855_movie_t-3.jpg", "2020-0225-102455_030855_movie_t-2.jpg", "2020-0225-102455_030855_movie_t-1.jpg", "2020-0225-102455_030855_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban downtown street with high-rises features a single left-side through lane for the ego vehicle, separated by metal railings from adjacent same-direction lanes on the right; the patched pavement is dry and traffic is moderate and steady. A black SUV directly ahead in the ego lane begins to move off as the light ahead is green, and it governs the ego car's pace. In the lanes to the right beyond the railing, a white box truck and several cars proceed straight at low speed parallel to the ego vehicle with no opportunity to merge. On the left, a parked black sedan and other stopped vehicles line the curb while a pedestrian stands near them on the sidewalk without stepping into the road.", "hazard_reasoning": "There is a black SUV starting to move in the ego lane, in front of the ego car, because of a green traffic light ahead. You should start moving promptly to follow the green signal and maintain traffic flow."}
{"id": "train_08397", "split": "train", "clip_key": "titan_clip_943_000036_movie", "source": {"subset": "titan", "scenario": "clip_943", "frame": "000036"}, "frames": ["titan_clip_943_000036_movie_t-3.jpg", "titan_clip_943_000036_movie_t-2.jpg", "titan_clip_943_000036_movie_t-1.jpg", "titan_clip_943_000036_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian on the left", "environment_perception": "A narrow urban commercial street with a single lane and no median appears, the pavement is smooth and traffic is light, though the space is pinched by a large delivery truck standing along the right edge of the lane. On the left side near the ego vehicle, a woman in a white shirt and black skirt walks toward the camera along the roadside and may enter the ego lane. Ahead to the right, the truck remains stopped, encroaching into the lane and constraining the available width. Farther ahead near the center, a pedestrian moves leftward across the roadway toward the shops and may briefly affect the ego vehicle's path.", "hazard_reasoning": "There is a woman wearing a white shirt and a black skirt, and walking towards the ego car, on the left side of the road. The pedestrian could step into the road unexpectedly from the left side, so the driver should be cautious."}
{"id": "train_08398", "split": "train", "clip_key": "2020-0214-145407_005922_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "005922"}, "frames": ["2020-0214-145407_005922_movie_t-3.jpg", "2020-0214-145407_005922_movie_t-2.jpg", "2020-0214-145407_005922_movie_t-1.jpg", "2020-0214-145407_005922_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street runs beside an elevated expressway, with two lanes in the same direction and no median; the asphalt is worn with patches and rumble strips, and traffic flow is moderate. The ego vehicle continues in the left lane behind a gray van that drives away ahead, effectively setting the pace. Farther ahead, another small van proceeds in the right lane in the same direction at a steady speed without encroaching on the ego path. On the right curb near the camera, a white van is stopped close to the lane. An overhead circular sign shows 40.", "hazard_reasoning": "There is a gray van driving in the ego lane away from the ego car. The red stop sign ahead may cause the van or other vehicles to stop, so the driver should be aware and prepare to stop."}
{"id": "train_08399", "split": "train", "clip_key": "2020-0213-143552_059942_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "059942"}, "frames": ["2020-0213-143552_059942_movie_t-3.jpg", "2020-0213-143552_059942_movie_t-2.jpg", "2020-0213-143552_059942_movie_t-1.jpg", "2020-0213-143552_059942_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction and a raised hedge median has dry pavement and moderate traffic, with opposing flow on the far right beyond the median. A white box truck directly ahead in the ego lane slows, constraining the ego car's pace. A white wagon in the adjacent left lane moves slightly ahead, continuing straight and overtaking the truck. Opposing vehicles travel toward the camera beyond the median but remain separated. An overhead gantry sign indicates straight-ahead travel.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car in the ego lane. Slow down to maintain a safe gap and prevent a rear-end collision."}
{"id": "train_08400", "split": "train", "clip_key": "titan_clip_1152_000534_movie", "source": {"subset": "titan", "scenario": "clip_1152", "frame": "000534"}, "frames": ["titan_clip_1152_000534_movie_t-3.jpg", "titan_clip_1152_000534_movie_t-2.jpg", "titan_clip_1152_000534_movie_t-1.jpg", "titan_clip_1152_000534_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "A narrow urban side street with no center line and dry brick pavement shows light traffic. A box truck is stopped on the right side just ahead with its rear doors open, unloading cargo in front of the ego car, and it occupies part of the travel lane. Two workers stand at the rear of the truck handling boxes close to the roadway and near the ego vehicle's path. No other moving vehicles are immediately nearby.", "hazard_reasoning": "There is a parked truck with its rear doors open, unloading cargo, on the right side of the road, in front of the ego car. This unloading truck and clutter restrict the roadway and create blind spots, so the driver should carefully manoeuvre around it to prevent collision."}
{"id": "train_08401", "split": "train", "clip_key": "2020-0206-142535_044581_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "044581"}, "frames": ["2020-0206-142535_044581_movie_t-3.jpg", "2020-0206-142535_044581_movie_t-2.jpg", "2020-0206-142535_044581_movie_t-1.jpg", "2020-0206-142535_044581_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth asphalt and painted lane dividers carries moderate traffic that compresses at an intersection ahead. The silver mid-size SUV immediately ahead in the ego lane is stopped, holding the ego vehicle, because the traffic signal ahead is red. Farther ahead in the same lane, a white van also waits in the queue near the stop line. In the right adjacent lanes, several cars roll slowly toward the junction while maintaining gaps. The overhead traffic light shows red.", "hazard_reasoning": "There is a silver mid-suv stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver must stop to avoid colliding with the halted vehicle at the intersection."}
{"id": "train_08402", "split": "train", "clip_key": "2020-0206-101736_044688_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "044688"}, "frames": ["2020-0206-101736_044688_movie_t-3.jpg", "2020-0206-101736_044688_movie_t-2.jpg", "2020-0206-101736_044688_movie_t-1.jpg", "2020-0206-101736_044688_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial lined with midrise buildings runs under a pedestrian overpass, the dry pavement carrying heavy stop-and-go queues in the same direction, with a right-side lane separated by red-and-white bollards. Directly ahead, a beige car in the ego lane is stopped because of congestion ahead, holding the ego vehicle. To the left, a silver microvan creeps forward in the adjacent lane beside the ego car, limiting room to change lanes. Farther ahead and slightly right, a line of white vans and a box truck crawl toward the overpass, collectively constraining the flow.", "hazard_reasoning": "There is a beige SUV stopped in the ego lane, because of traffic congestion ahead. The driver must stop to avoid colliding with the halted SUV in the traffic queue."}
{"id": "train_08403", "split": "train", "clip_key": "titan_clip_132_000570_movie", "source": {"subset": "titan", "scenario": "clip_132", "frame": "000570"}, "frames": ["titan_clip_132_000570_movie_t-3.jpg", "titan_clip_132_000570_movie_t-2.jpg", "titan_clip_132_000570_movie_t-1.jpg", "titan_clip_132_000570_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "A narrow urban commercial street with brick paving and no median runs between shopfronts, with light traffic and reduced width from vehicles at the curb. Directly ahead, a tall pedestrian wearing a black sleeveless jacket and brown pants walks away along the center of the lane, constraining the ego vehicle's pace. On the right edge near the camera, a black minivan is stopped at the curb and intrudes into the lane. Farther ahead in the same direction, a small van stands near the left side of the street, creating a pinch point with the vehicle on the right.", "hazard_reasoning": "There's a tall pedestrian, wearing a black sleeveless jacket and brown pants, walking, in front of the ego car, away from the ego car. The driver should yield because the pedestrian is walking ahead and may enter the vehicle's path unexpectedly."}
{"id": "train_08404", "split": "train", "clip_key": "2020-0220-151845_026782_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "026782"}, "frames": ["2020-0220-151845_026782_movie_t-3.jpg", "2020-0220-151845_026782_movie_t-2.jpg", "2020-0220-151845_026782_movie_t-1.jpg", "2020-0220-151845_026782_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway runs under elevated structures with concrete walls on the left and a guardrail on the right; the ego-car travels in the left of two same-direction lanes on smooth pavement as traffic compresses ahead. A white sedan directly ahead in the ego lane slows because congestion builds further up, reducing the ego-car's pace. In the adjacent right lane, a silver SUV slightly ahead moves past at a steadier speed and continues straight, separated from the ego lane by a solid yellow line that prevents lane changes. Farther ahead, several cars including a yellow one queue under the overpass, keeping flow slow.", "hazard_reasoning": "There is a white sedan slowing down in front of the ego-car because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_08405", "split": "train", "clip_key": "2020-0225-102455_043718_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "043718"}, "frames": ["2020-0225-102455_043718_movie_t-3.jpg", "2020-0225-102455_043718_movie_t-2.jpg", "2020-0225-102455_043718_movie_t-1.jpg", "2020-0225-102455_043718_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided road with one lane in the ego direction runs between buildings, separated from oncoming lanes on the right by a metal railing; the pavement is dry and traffic is moderate and slow. A box truck ahead in the ego lane proceeds slowly and sets the pace. A black van ahead left cuts in from the marked left-side bay into the ego lane to pass a parked vehicle, merging into the ego path. Oncoming traffic to the right flows steadily beyond the divider and does not interact. A 50 km/h speed-limit sign is visible on the left.", "hazard_reasoning": "A black van is cutting in to the ego lane from the left lane, because of the parked vehicle. The black van's unexpected lane change reduces space and may lead to a collision, so slowing down will provide more reaction time."}
{"id": "train_08406", "split": "train", "clip_key": "2020-0210-101957_042004_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "042004"}, "frames": ["2020-0210-101957_042004_movie_t-3.jpg", "2020-0210-101957_042004_movie_t-2.jpg", "2020-0210-101957_042004_movie_t-1.jpg", "2020-0210-101957_042004_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial carries same-direction traffic with a painted gore area as a divider and smooth pavement; flow is moderate and slow-moving. A black mid-size SUV is directly ahead in the ego lane and is stopped, holding the ego vehicle because of the traffic congestion ahead. In the adjacent right lane slightly farther ahead, a white minivan rolls slowly straight, parallel to the queue and not entering the ego lane. Farther right, a dark sedan proceeds straight at low speed as part of the same line of vehicles. Overhead blue guide signs indicate directions to local destinations, including an arrow for route 6 toward Asakusa.", "hazard_reasoning": "There is a black mid-SUV in the ego lane, stopped in front of the ego car, because of the traffic congestion ahead. The driver should stop promptly to avoid colliding with the stationary SUV."}
{"id": "train_08407", "split": "train", "clip_key": "2020-0214-145407_012008_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "012008"}, "frames": ["2020-0214-145407_012008_movie_t-3.jpg", "2020-0214-145407_012008_movie_t-2.jpg", "2020-0214-145407_012008_movie_t-1.jpg", "2020-0214-145407_012008_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the broken-down truck", "environment_perception": "An urban multi-lane arterial runs straight between midrise buildings, the dry pavement slightly worn and edged by cones and barriers; traffic is light to moderate and flows smoothly through the intersection. A white truck is parked along the right curb near the ego vehicle, broken down, and remains stationary, narrowing the curb lane beside the crosswalk. Ahead in the ego lane, a black sedan continues straight at a steady pace, leading the movement toward the next block. Two pedestrians wait on the left sidewalk at the crosswalk and do not enter the road. An overhead traffic light shows green.", "hazard_reasoning": "There is a white truck parked in the left lane, because it has broken down. The stationary truck obstructs the left lane and limits visibility of the road ahead, increasing collision risk, so the driver should be aware of its presence."}
{"id": "train_08408", "split": "train", "clip_key": "2020-0210-101957_020909_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "020909"}, "frames": ["2020-0210-101957_020909_movie_t-3.jpg", "2020-0210-101957_020909_movie_t-2.jpg", "2020-0210-101957_020909_movie_t-1.jpg", "2020-0210-101957_020909_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road with dry, well-marked pavement carries moderate traffic that bunches ahead. A white motorcycle ahead in the ego lane slows because of congestion ahead, directly setting the ego car's pace. Farther ahead, a white box truck in the adjacent right lane moves slowly and contributes to the queue. A white SUV slightly ahead to the right travels parallel in the next lane, limiting space for a lane change. On the left sidewalk, a pedestrian stands beside a crosswalk, waiting. An overhead sign indicates Toshima City, and construction equipment is parked at the curb on the right.", "hazard_reasoning": "There is a white motorcycle slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision under these conditions."}
{"id": "train_08409", "split": "train", "clip_key": "titan_clip_888_000450_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_888_000450_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_888_000450_movie_t-3_augB1.jpg", "titan_clip_888_000450_movie_t-2_augB1.jpg", "titan_clip_888_000450_movie_t-1_augB1.jpg", "titan_clip_888_000450_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian ahead", "environment_perception": "A dense urban alley with a single narrow undivided roadway has no centerline, smooth dry pavement, and very light traffic with no moving vehicles. A pedestrian wearing a cap and white shirt walks away from the ego vehicle in the middle of the road, remaining in the ego path and constraining its pace. Another pedestrian ahead-left in a dark shirt walks away along the lane near the storefronts, still within the travel path. Several more pedestrians farther ahead move along the center of the street and may drift into the ego lane. Storefront signs, freestanding boards, and a scaffold with a draped sheet on the right encroach into the roadway and narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a cap and white shirt, walking in the middle of the road, away from the ego car. The pedestrian is directly in the vehicle's path, so you should yield to avoid a collision."}
{"id": "train_08410", "split": "train", "clip_key": "titan_clip_1008_000474_movie", "source": {"subset": "titan", "scenario": "clip_1008", "frame": "000474"}, "frames": ["titan_clip_1008_000474_movie_t-3.jpg", "titan_clip_1008_000474_movie_t-2.jpg", "titan_clip_1008_000474_movie_t-1.jpg", "titan_clip_1008_000474_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Yield to the turning vehicle", "environment_perception": "A narrow urban street with shops lines both sides, forming a single undivided lane with smooth pavement and light moving traffic but tight clearance due to roadside parking. A white box truck stands on the left just ahead, partly occupying the ego lane and constraining the approach. Farther ahead, a black hatchback is parked on the left with its right indicator flashing, suggesting it may pull out into the ego lane. On the right edge ahead, a bicyclist travels in the same direction near the curb, potentially overlapping the space needed to pass the parked vehicles. Bollards and storefronts border the right sidewalk; no salient signals are visible.", "hazard_reasoning": "There is a black hatchback indicating right, parked on the left side of the road. The vehicle may pull out into traffic, so drivers should be prepared to yield."}
{"id": "train_08411", "split": "train", "clip_key": "titan_clip_532_000414_movie", "source": {"subset": "titan", "scenario": "clip_532", "frame": "000414"}, "frames": ["titan_clip_532_000414_movie_t-3.jpg", "titan_clip_532_000414_movie_t-2.jpg", "titan_clip_532_000414_movie_t-1.jpg", "titan_clip_532_000414_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban T-intersection on a narrow two-way local street has no median and clean, dry pavement, with light traffic and no moving vehicles in view. A pedestrian ahead left crosses rightward across the mouth of the intersection directly in front of the ego vehicle, occupying the intended path and requiring a pause. On the right sidewalk at the corner, two workers in blue move slowly along the curb, one pushing a small cart, remaining on the sidewalk near the roadway edge. Another pedestrian on the far side of the cross street walks along the storefronts away from the corner without approaching the lane. A parked white car sits at the left curb, and bicycles are lined up by shops on the far side. No traffic signals are visible.", "hazard_reasoning": "The road shows no apparent hazards, so normal driving can continue without additional caution."}
{"id": "train_08412", "split": "train", "clip_key": "2020-0131-135401_054752_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "054752"}, "frames": ["2020-0131-135401_054752_movie_t-3.jpg", "2020-0131-135401_054752_movie_t-2.jpg", "2020-0131-135401_054752_movie_t-1.jpg", "2020-0131-135401_054752_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three lanes in the ego direction has smooth pavement and heavy traffic queued at an intersection, with movement mostly stopped. A gray sedan directly ahead in the ego lane is stopped because the overhead traffic signal shows red, constraining the ego vehicle. In the adjacent right lane, a white minivan slightly ahead remains stopped in the queue, matching the signal. Farther ahead in the left lane, a white van creeps forward with the line of vehicles and does not merge. Overhead blue direction signs and a pedestrian footbridge span the roadway.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego car, because of a red traffic light. The driver should stop to prevent a collision with the halted sedan at the red light."}
{"id": "train_08413", "split": "train", "clip_key": "2020-0207-151349_014406_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "014406"}, "frames": ["2020-0207-151349_014406_movie_t-3.jpg", "2020-0207-151349_014406_movie_t-2.jpg", "2020-0207-151349_014406_movie_t-1.jpg", "2020-0207-151349_014406_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop behind the white van", "environment_perception": "An urban multi-lane road with smooth pavement is at a standstill near an intersection, with a curbside hedge on the right and strong sun glare. Traffic in the same direction is heavy and queued. A white van directly ahead in the ego lane is stopped, angled left to turn and merge into the adjacent queue. A large box truck slightly ahead to the right is stationary in the next lane, blocking forward view and space. Another box truck close on the left is also stopped alongside, narrowing the corridor.", "hazard_reasoning": "There is a white van stopped in front of the ego car, because it is turning left and merging into stopped traffic. Stop behind the van to maintain a safe distance and avoid collision as it merges into traffic."}
{"id": "train_08414", "split": "train", "clip_key": "titan_clip_278_000342_movie", "source": {"subset": "titan", "scenario": "clip_278", "frame": "000342"}, "frames": ["titan_clip_278_000342_movie_t-3.jpg", "titan_clip_278_000342_movie_t-2.jpg", "titan_clip_278_000342_movie_t-1.jpg", "titan_clip_278_000342_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with storefronts lines both sides, forming a single shared lane with no centerline; the pavement looks smooth and traffic is very light with no moving vehicles. Ahead on the right, two pedestrians walk away from the ego car along the edge of the lane, narrowing space in the ego path. On the left near the curb, a person handles boxes on a cart that protrudes slightly into the roadway, posing a near-side obstruction. Farther ahead on the right, another person stands by shop goods at the lane edge, further reducing clearance. A triangular stop sign is visible ahead and large \"止まれ\" markings appear on the pavement. Metal roll cages, trash bags, and several cones line the right side and encroach on the lane.", "hazard_reasoning": "There are two pedestrians walking on the right side of the road, away from the ego car. The driver should slow down because pedestrians walking in the roadway may change direction or step into the vehicle's path, requiring extra space to pass safely."}
{"id": "train_08415", "split": "train", "clip_key": "2020-0220-151845_046687_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "046687"}, "frames": ["2020-0220-151845_046687_movie_t-3.jpg", "2020-0220-151845_046687_movie_t-2.jpg", "2020-0220-151845_046687_movie_t-1.jpg", "2020-0220-151845_046687_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated structure, with two same-direction lanes and a curbside shoulder; the asphalt appears smooth and traffic is heavy and slow. A red flatbed truck with a yellow-covered load is directly ahead in the ego lane, slowing because congestion builds in front and it constrains the ego car's pace. To the right, a small white van travels alongside in the adjacent lane at low speed, holding position next to the truck and limiting an immediate move right. Farther ahead in the right lane, a white box truck proceeds slowly with the queue. Overhead guide signs indicate Route 408 and E20 toward the Chuo Expressway.", "hazard_reasoning": "There is a red truck slowing in front of the ego car in the ego lane because of traffic congestion ahead. The congestion indicates possible sudden stops ahead, requiring the driver to slow down to maintain a safe following distance."}
{"id": "train_08416", "split": "train", "clip_key": "titan_clip_17_000282_movie", "source": {"subset": "titan", "scenario": "clip_17", "frame": "000282"}, "frames": ["titan_clip_17_000282_movie_t-3.jpg", "titan_clip_17_000282_movie_t-2.jpg", "titan_clip_17_000282_movie_t-1.jpg", "titan_clip_17_000282_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the sedan", "environment_perception": "An urban two-way street with one lane per direction and no median runs between tall buildings; the pavement is smooth and traffic is moderate. A black sedan is stopped in the ego lane along the left side of the road, narrowing the lane. A white van directly ahead in the ego lane slows and steers slightly right to pass the stopped car, constraining the ego vehicle's pace. An oncoming white van travels toward the camera in the opposite lane and draws alongside during the pass, reducing lateral space. Railings and rows of parked bicycles line both curbs.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, on the left side of the road. Because it obstructs the driving lane, you should manoeuvre carefully around it to avoid collision and maintain safe flow."}
{"id": "train_08417", "split": "train", "clip_key": "titan_clip_842_000396_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_842_000396_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_842_000396_movie_t-3_augB1.jpg", "titan_clip_842_000396_movie_t-2_augB1.jpg", "titan_clip_842_000396_movie_t-1_augB1.jpg", "titan_clip_842_000396_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "be aware of cyclist movement", "environment_perception": "An urban street with mid-rise buildings carries light one-way traffic on two lanes with smooth dry pavement; the rightmost lane is red-painted and marked for a right turn. A cyclist wearing a backpack moves diagonally across in front of the ego car from the left toward the right side of the road, briefly occupying the ego lane and constraining the approach. Several pedestrians are on the left sidewalk near a shop entrance behind a green railing and remain off the roadway. A distant white car ahead in the same direction continues straight without affecting the ego vehicle. A blue guide sign on the left indicates a left turn in 150 m.", "hazard_reasoning": "A cyclist wearing a backpack is crossing in front of the ego car to the right side of the road. The cyclist may change direction unpredictably, so be aware of their movement."}
{"id": "train_08418", "split": "train", "clip_key": "2020-0228-102841_086437_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "086437"}, "frames": ["2020-0228-102841_086437_movie_t-3.jpg", "2020-0228-102841_086437_movie_t-2.jpg", "2020-0228-102841_086437_movie_t-1.jpg", "2020-0228-102841_086437_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van.", "environment_perception": "An urban divided arterial with three same-direction lanes and a metal fence median runs between tall buildings; the pavement is smooth and traffic is moderate, flowing steadily. A white sedan ahead in the ego lane cruises at a similar speed and effectively sets the pace. To its right, a light-colored car in the middle lane keeps position slightly ahead while maintaining its lane. On the left side by the curb, a white van is parked and remains stationary near the travel lane. Opposite-direction traffic moves normally beyond the median, and no salient signals or controls are visible.", "hazard_reasoning": "There is a white van parked on the left side of the road. A stationary vehicle close to the travel lane may require drivers to adjust their path or speed; drivers should stay alert for potential hazards caused by the parked van."}
{"id": "train_08419", "split": "train", "clip_key": "2020-0206-101736_073378_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "073378"}, "frames": ["2020-0206-101736_073378_movie_t-3.jpg", "2020-0206-101736_073378_movie_t-2.jpg", "2020-0206-101736_073378_movie_t-1.jpg", "2020-0206-101736_073378_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with multiple lanes and painted separators is dry and smooth, and traffic is light to moderate. A cargo truck directly ahead in the ego lane continues straight, moving away from the ego car and setting the pace. To its left, a small white van in the curbside lane runs slightly ahead alongside, keeping pace and reducing space to merge left. Ahead to the right, a white car approaches in the oncoming lane and proceeds straight, separated by the center markings. Parked vehicles line the roadside near a dealership, and a gas station forecourt opens on the left.", "hazard_reasoning": "There is a white truck driving in the ego lane, away from the ego car. Following the vehicle ahead helps maintain a safe distance and allows you to respond to any sudden speed changes."}
{"id": "train_08420", "split": "train", "clip_key": "2020-0203-114632_031941_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "031941"}, "frames": ["2020-0203-114632_031941_movie_t-3.jpg", "2020-0203-114632_031941_movie_t-2.jpg", "2020-0203-114632_031941_movie_t-1.jpg", "2020-0203-114632_031941_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A busy urban commercial street with multiple lanes in each direction leads to a signalized intersection; the pavement is smooth and traffic is moderate. A white van ahead in the ego lane drives away from the camera and continues straight through the intersection, loosely setting the pace. A large coach bus approaches in the oncoming lanes to the right and proceeds straight past. A small box truck is stationary at the left curb near the crosswalk beside the ego vehicle, remaining out of the through lane. Pedestrians line the sidewalks, and the roadway ahead appears clear of obstacles.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08421", "split": "train", "clip_key": "2020-0220-151845_009433_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "009433"}, "frames": ["2020-0220-151845_009433_movie_t-3.jpg", "2020-0220-151845_009433_movie_t-2.jpg", "2020-0220-151845_009433_movie_t-1.jpg", "2020-0220-151845_009433_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "A busy urban arterial with multiple same-direction lanes shows smooth pavement and heavy, slow traffic queuing for an intersection ahead. Directly ahead in the ego lane, a black SUV is stopped at a red traffic light, holding the ego vehicle in place. In the adjacent right lane, a large flatbed truck loaded with metal pipes idles nearly parallel to the ego car as the queue inches forward. On the left, several cars in neighboring lanes proceed slowly ahead in the same direction without cutting into the ego lane. Overhead signals are clearly visible and display red for this approach.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, because of the red traffic light. The driver should stop to avoid colliding with the halted vehicle due to the red signal."}
{"id": "train_08422", "split": "train", "clip_key": "titan_clip_278_000234_movie", "source": {"subset": "titan", "scenario": "clip_278", "frame": "000234"}, "frames": ["titan_clip_278_000234_movie_t-3.jpg", "titan_clip_278_000234_movie_t-2.jpg", "titan_clip_278_000234_movie_t-1.jpg", "titan_clip_278_000234_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single shared lane and no median runs between storefronts; the pavement is smooth and traffic is light with no moving vehicles. On the right edge ahead, a pedestrian in a black T-shirt and gray shorts walks away from the ego vehicle in the roadway because the sidewalk is blocked by cones and storage carts, so he occupies part of the lane. At the left storefront near the ego vehicle, a worker handles boxes at the curb close to the lane, narrowing the approach. Farther ahead on the right, another pedestrian stands by the carts and remains near the travel path. An overhead triangular stop sign is visible ahead, and cones and trolleys line the right side as minor obstacles.", "hazard_reasoning": "There's a pedestrian wearing a black t-shirt and gray shorts, walking on the right side of the road, away from the ego car, because the sidewalk is blocked. The driver should slow down to allow the pedestrian to pass safely as they are forced into the roadway by the obstruction."}
{"id": "train_08423", "split": "train", "clip_key": "titan_clip_160_000336_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_160_000336_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_160_000336_movie_t-3_augB1.jpg", "titan_clip_160_000336_movie_t-2_augB1.jpg", "titan_clip_160_000336_movie_t-1_augB1.jpg", "titan_clip_160_000336_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial side street with a single narrow lane and no centerline appears, the pavement smooth and traffic light with mostly foot traffic. A pedestrian in a blue shirt carrying a briefcase is in the middle of the road ahead, crossing from left to right across the ego path and constraining the vehicle's pace. Farther ahead, several pedestrians cluster near the end of the block, some walking along the edge of the lane and potentially stepping into the path. No other moving vehicles are visible. Shop signs, bollards, and freestanding boards encroach slightly into the roadway, reducing clearance.", "hazard_reasoning": "There is a pedestrian in the middle of the road, wearing a blue shirt and carrying a briefcase, crossing to the right side. The driver should slow down to safely yield to the crossing pedestrian and avoid a collision."}
{"id": "train_08424", "split": "train", "clip_key": "2020-0220-102630_016617_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "016617"}, "frames": ["2020-0220-102630_016617_movie_t-3.jpg", "2020-0220-102630_016617_movie_t-2.jpg", "2020-0220-102630_016617_movie_t-1.jpg", "2020-0220-102630_016617_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth asphalt curves gently right between mid-rise buildings, and traffic is heavy and slow. Lanes are divided by white lines with no median visible. A white sedan is stopped directly ahead in the ego lane because congestion piles up further forward, holding the ego car. A small flatbed truck is alongside to the right in the adjacent lane, inching forward close to the ego vehicle and limiting room to merge. Farther ahead, a tall box truck occupies the lanes ahead and barely moves, contributing to the queue that blocks the sedan.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe following distance and avoid colliding with the halted vehicle."}
{"id": "train_08425", "split": "train", "clip_key": "2020-0129-144857_042898_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "042898"}, "frames": ["2020-0129-144857_042898_movie_t-3.jpg", "2020-0129-144857_042898_movie_t-2.jpg", "2020-0129-144857_042898_movie_t-1.jpg", "2020-0129-144857_042898_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Start moving", "environment_perception": "An urban multi-lane road runs under an elevated expressway, with a right-side guardrail and dry, shaded pavement; traffic is heavy and slow-moving. A black van directly ahead in the ego lane creeps forward and gradually moves left out of the ego lane because of congestion. Farther ahead in the same lane, a box truck waits near the signal, effectively setting the pace for the line. In the adjacent lane to the left, a white hatchback travels slowly in parallel, keeping position beside the van and limiting opportunities to merge. A yellow merge-caution sign stands on the right, and blue overhead direction boards hang above.", "hazard_reasoning": "a black van is driving off from the ego lane away from the ego car because of the slow-moving traffic congestion. The van's unexpected lane change requires you to start moving to avoid being cut off and maintain safe following distance."}
{"id": "train_08426", "split": "train", "clip_key": "titan_clip_412_000180_movie", "source": {"subset": "titan", "scenario": "clip_412", "frame": "000180"}, "frames": ["titan_clip_412_000180_movie_t-3.jpg", "titan_clip_412_000180_movie_t-2.jpg", "titan_clip_412_000180_movie_t-1.jpg", "titan_clip_412_000180_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single lane and no median runs between buildings; the stone-paved surface appears even and traffic is light near a zebra crossing. A large white box truck stands ahead in the ego lane along the left side, constraining the available width and pace. A pedestrian with an umbrella walks from the right across the crosswalk toward the left curb directly in front of the ego path. On the right side of the lane, a cyclist wearing a blue shirt rides toward the ego vehicle, approaching the crosswalk and may enter the ego path. A pedestrian-crossing sign and a no-stopping sign are visible by the left sidewalk.", "hazard_reasoning": "There is a cyclist wearing a blue shirt, cycling on the right side of the lane, toward the ego car. The cyclist is moving close to the vehicle's path, so reducing speed is necessary to prevent a collision and ensure safe passing."}
{"id": "train_08427", "split": "train", "clip_key": "titan_clip_1222_000060_movie", "source": {"subset": "titan", "scenario": "clip_1222", "frame": "000060"}, "frames": ["titan_clip_1222_000060_movie_t-3.jpg", "titan_clip_1222_000060_movie_t-2.jpg", "titan_clip_1222_000060_movie_t-1.jpg", "titan_clip_1222_000060_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrians", "environment_perception": "An urban commercial street with a narrow two-way carriageway and no median is shown; the pavement is worn but dry, and traffic is light with no oncoming vehicles visible. Ahead in the ego lane, a group of pedestrians wearing white shirts walks away along the center of the road, occupying the lane and limiting the car's pace. At the left front, a white sedan is stopped near the curb with its nose protruding into the roadway, which may enter the lane and affect the ego vehicle's path. The road gently bends left between shopfronts and trees, and no salient traffic signals are visible.", "hazard_reasoning": "There is a group of pedestrians wearing white shirts and walking in front of the ego car. The driver should yield because these pedestrians are crossing the path of travel and may not stop."}
{"id": "train_08428", "split": "train", "clip_key": "2020-0207-101955_024863_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "024863"}, "frames": ["2020-0207-101955_024863_movie_t-3.jpg", "2020-0207-101955_024863_movie_t-2.jpg", "2020-0207-101955_024863_movie_t-1.jpg", "2020-0207-101955_024863_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with smooth pavement runs between tall buildings, with flexible bollards forming a median; traffic is light to moderate in the ego direction while oncoming traffic is heavy and slow. A green truck ahead in the ego lane drives away at a steady pace, constraining the ego car's speed. To the right, a queue of oncoming cars moves slowly behind the bollards and passes close by but remains separated. On the left sidewalk near a side street, several pedestrians wait at the crosswalk without stepping off the curb. A no-parking and no-stopping sign is posted on the left.", "hazard_reasoning": "There is a green truck driving in the ego lane, away from the ego car. Under this situation, following the vehicle ahead helps maintain safe spacing and prepare for any sudden braking."}
{"id": "train_08429", "split": "train", "clip_key": "2020-0131-135401_003846_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003846"}, "frames": ["2020-0131-135401_003846_movie_t-3.jpg", "2020-0131-135401_003846_movie_t-2.jpg", "2020-0131-135401_003846_movie_t-1.jpg", "2020-0131-135401_003846_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road with single lanes each direction runs between mid-rise buildings, the pavement smooth and the flow slow to stopped. A gray box truck immediately ahead in the left ego lane is stationary because of congestion further up the road, blocking the path and holding the ego vehicle. A person with a bicycle on the left ahead moves slowly along the curb in the same direction, remaining outside the travel lane. An overhead sign shows 40. Bright sun glare from the right reduces contrast but no other hazards are evident.", "hazard_reasoning": "There is a gray truck stopped in the ego lane because of traffic congestion ahead on the road. Drivers should stop to avoid colliding with the stationary truck caused by the traffic congestion."}
{"id": "train_08430", "split": "train", "clip_key": "titan_clip_1029_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1029_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1029_000198_movie_t-3_augB1.jpg", "titan_clip_1029_000198_movie_t-2_augB1.jpg", "titan_clip_1029_000198_movie_t-1_augB1.jpg", "titan_clip_1029_000198_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the obstruction carefully.", "environment_perception": "An urban commercial alley with a single narrow shared lane and cobblestone-like pavement shows light vehicle traffic and several pedestrians; there is no median and the flow is slow. Ahead in the ego lane, two pedestrians in black-and-white tops walk down the middle, one looking at a cell phone, as they maneuver around a van stopped on the right, and they occupy the vehicle's path. The white van is parked at the right curb with its rear door open, protruding into the lane and narrowing the way. Farther ahead on the left edge, another pedestrian walks in the same direction near the storefronts and stays to the side. Bicycles and a scooter are parked along the right curb, adding minor roadside clutter.", "hazard_reasoning": "There are two pedestrians, both wearing black and white shirts, one looking at a cell phone, walking down the middle of the road in the ego-lane, because they have to maneuver around a parked van. The driver should manoeuvre around the obstruction carefully to avoid collision with the pedestrians."}
{"id": "train_08431", "split": "train", "clip_key": "2020-0226-101332_019036_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "019036"}, "frames": ["2020-0226-101332_019036_movie_t-3.jpg", "2020-0226-101332_019036_movie_t-2.jpg", "2020-0226-101332_019036_movie_t-1.jpg", "2020-0226-101332_019036_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection on a two-way multilane road comes into view, the pavement dry and smooth and traffic light, with a few oncoming vehicles waiting beyond the junction. A pedestrian in dark clothing walks across the near zebra from right to left directly ahead, occupying the ego lane and holding the approach. A yellow taxi in the middle of the intersection turns left across the junction toward the far left street, briefly crossing the ego path. An all-black-clad cyclist crosses at the left-side crosswalk while vehicles are stopped at the signal.", "hazard_reasoning": "There is a cyclist wearing all black, crossing at the pedestrian crosswalk to the left side of the road, because of the red light. Stop to avoid colliding with the cyclist crossing at the crosswalk."}
{"id": "train_08432", "split": "train", "clip_key": "2020-0207-101955_113129_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "113129"}, "frames": ["2020-0207-101955_113129_movie_t-3.jpg", "2020-0207-101955_113129_movie_t-2.jpg", "2020-0207-101955_113129_movie_t-1.jpg", "2020-0207-101955_113129_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway scene unfolds inside a tunnel with two same-direction lanes, smooth pavement, and heavy stop-and-go flow toward the bright exit ahead. In the ego lane a black sedan directly ahead slows and inches forward because of congestion, setting the ego car's pace. To the right, a white van slightly ahead in the adjacent lane also crawls, running parallel to the ego vehicle and limiting any chance to change lanes. Farther ahead in the lane, a large box truck moves slowly and forms part of the queue that compresses traffic near the tunnel mouth. Concrete walls and barriers line the tunnel, with no oncoming traffic visible.", "hazard_reasoning": "There is a black sedan slowing in the front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid collision due to reduced speed of traffic ahead."}
{"id": "train_08433", "split": "train", "clip_key": "2020-0210-155354_047669_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "047669"}, "frames": ["2020-0210-155354_047669_movie_t-3.jpg", "2020-0210-155354_047669_movie_t-2.jpg", "2020-0210-155354_047669_movie_t-1.jpg", "2020-0210-155354_047669_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial carries moderate, steadily moving traffic on dry, smooth pavement, with the ego car in the leftmost lane and no physical median visible. Ahead in the ego lane, a silver van accelerates and pulls away as traffic ahead clears, opening a growing gap for the ego vehicle. To the right, a black sedan in the adjacent lane continues straight and gradually edges ahead without impeding the ego lane. Farther ahead in the middle lane, a small white van proceeds with the flow at a similar speed. Overhead direction signs show through arrows for multiple lanes.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car, because traffic ahead is clearing. Maintain a safe following distance and align speed with the clearing traffic to avoid unexpected stops."}
{"id": "train_08434", "split": "train", "clip_key": "2020-0205-152530_048883_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "048883"}, "frames": ["2020-0205-152530_048883_movie_t-3.jpg", "2020-0205-152530_048883_movie_t-2.jpg", "2020-0205-152530_048883_movie_t-1.jpg", "2020-0205-152530_048883_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane divided boulevard with a landscaped median and smooth red-tinted pavement carries moderate, steady traffic toward a signalized intersection. A white box truck ahead in the ego lane continues straight under a green light and sets the ego vehicle's pace. To the right, a dark SUV in the adjacent lane runs parallel slightly ahead as it also proceeds through the junction. On the left, a dark van near the curb slows by the crosswalk without entering the ego lane. The overhead traffic signal shows green for the ego direction, and oncoming lanes remain separated beyond the median.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08435", "split": "train", "clip_key": "2020-0220-102630_030727_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_030727_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_030727_movie_t-3_augB1.jpg", "2020-0220-102630_030727_movie_t-2_augB1.jpg", "2020-0220-102630_030727_movie_t-1_augB1.jpg", "2020-0220-102630_030727_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Stop and keep distance from slowing cyclist", "environment_perception": "An urban street with two same-direction lanes and no median; the asphalt is smooth and traffic is heavy, moving slowly in a queue. A rider in a brown jacket on a scooter ahead in the left lane slows near the curb because congestion ahead constrains pace. A white hatchback slightly ahead to the right creeps forward in the adjacent lane, limiting the ego vehicle's chance to pass. Farther ahead, a tall box truck nearly stops in the center of the lane and becomes the head of the backup, blocking the view down the road. On the left, a flatbed truck with orange cones occupies the curbside, narrowing the lane.", "hazard_reasoning": "There is a cyclist wearing a brown jacket, slowing in the ego lane on the left side of the road, because of traffic congestion ahead. The cyclist's reduced speed could lead to a collision if not anticipated, so the driver should stop and keep distance."}
{"id": "train_08436", "split": "train", "clip_key": "titan_clip_1378_000144_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1378_000144_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1378_000144_movie_t-3_augB1.jpg", "titan_clip_1378_000144_movie_t-2_augB1.jpg", "titan_clip_1378_000144_movie_t-1_augB1.jpg", "titan_clip_1378_000144_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction and no median has smooth pavement and light traffic. A dark van approaches in the oncoming lane to the right and passes ahead while continuing straight, reducing clearance near the centerline. Two pedestrians, both wearing black shirts, cross mid-block toward the right side farther ahead, briefly occupying the roadway and potentially entering the ego vehicle's path. A white van is parked along the left curb just ahead, encroaching slightly into the ego lane and narrowing the passage. Other pedestrians remain on the sidewalks and do not affect movement.", "hazard_reasoning": "There are two pedestrians, both wearing black shirts, crossing in the middle of the road to the right side. The driver should slow down to avoid a potential collision with crossing pedestrians."}
{"id": "train_08437", "split": "train", "clip_key": "titan_clip_604_000348_movie", "source": {"subset": "titan", "scenario": "clip_604", "frame": "000348"}, "frames": ["titan_clip_604_000348_movie_t-3.jpg", "titan_clip_604_000348_movie_t-2.jpg", "titan_clip_604_000348_movie_t-1.jpg", "titan_clip_604_000348_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian at the crosswalk", "environment_perception": "An urban two-way street with a single lane in each direction has smooth pavement and no median, and traffic is light as the ego-vehicle nears a small intersection. Ahead at the crosswalk, a pedestrian wearing a cap and beige uniform pushes a green cart from left to right across the roadway, passing directly through the ego lane. Two other pedestrians are ahead near the right side, one walking across behind the cart and another standing at the corner by the sidewalk. On the right edge beyond the crosswalk, a black van is stopped at the curb with other parked cars, narrowing the space on that side.", "hazard_reasoning": "There is a pedestrian wearing a cap and a beige uniform, pushing a cart, and crossing the street, towards the ego-car, to the right side at the crosswalk. The driver should yield because the pedestrian is entering the crosswalk and may step into the vehicle's path."}
{"id": "train_08438", "split": "train", "clip_key": "2020-0207-151349_035105_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "035105"}, "frames": ["2020-0207-151349_035105_movie_t-3.jpg", "2020-0207-151349_035105_movie_t-2.jpg", "2020-0207-151349_035105_movie_t-1.jpg", "2020-0207-151349_035105_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Be cautious of the motorcycle ahead", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with same-direction lanes divided by yellow lines and dry, intact pavement; traffic is heavy and slow. A motorcycle of undetermined color rides ahead in the ego lane, moving away from the ego car at low speed and effectively setting the ego vehicle's pace. In the lane to the right, a large white coach continues straight slowly with a green taxi following closely, staying parallel to the ego lane. Farther ahead and slightly right, a small white kei van creeps forward in its lane without merging. A concrete barrier lines the far right, leaving little shoulder.", "hazard_reasoning": "There is a motorcycle of undetermined color, driving in the ego lane, away from the ego car. The motorcycle ahead could decelerate suddenly, so the driver should be cautious of its movements to maintain safe following distance and reaction time."}
{"id": "train_08439", "split": "train", "clip_key": "titan_clip_440_000324_movie", "source": {"subset": "titan", "scenario": "clip_440", "frame": "000324"}, "frames": ["titan_clip_440_000324_movie_t-3.jpg", "titan_clip_440_000324_movie_t-2.jpg", "titan_clip_440_000324_movie_t-1.jpg", "titan_clip_440_000324_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid hitting the pedestrian", "environment_perception": "A narrow urban street with block paving provides a single usable lane and no median, and the surface is clean; several vehicles are stopped along the left so traffic is light and slow with no oncoming vehicles visible. A silver van and a small box truck stand on the left ahead, creating a pinch point that constrains the ego car's path. On the right side near the camera, a man in a white shirt and dark pants walks in the roadway toward the ego vehicle because the right sidewalk is crowded, and he may drift into the ego lane. Farther ahead in the middle of the lane, another pedestrian walks away from the camera, occupying the path and setting a low pace.", "hazard_reasoning": "There is a man dressed in a white shirt and blank pants walking on the right side of the road towards the ego-car because of other people on the right sidewalk. The driver should slow down to avoid hitting the pedestrian."}
{"id": "train_08440", "split": "train", "clip_key": "titan_clip_312_000126_movie", "source": {"subset": "titan", "scenario": "clip_312", "frame": "000126"}, "frames": ["titan_clip_312_000126_movie_t-3.jpg", "titan_clip_312_000126_movie_t-2.jpg", "titan_clip_312_000126_movie_t-1.jpg", "titan_clip_312_000126_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian", "environment_perception": "A narrow urban two-way street runs alongside mid-rise buildings, with no median or marked lanes and smooth pavement; traffic is light. Curbside activity on the right narrows the roadway where vehicles are stopped for loading. On the right shoulder ahead, a pedestrian moves toward the ego vehicle while handling a small handcart beside a black van, and his path may edge into the ego lane. Just ahead of him, a black van and a white light truck stand with rear areas open for loading, reducing space for through traffic in the ego's lane. On the left, another pedestrian stands near a shop entrance by the forecourt and stays put. A scooter is parked on the left forecourt.", "hazard_reasoning": "There is a pedestrian wearing a yellow shirt, carrying a handbag, walking on the right side of the road, towards the ego car. The driver should yield because the pedestrian is approaching the vehicle's path and may step into the lane abruptly."}
{"id": "train_08441", "split": "train", "clip_key": "2020-0212-102546_033566_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "033566"}, "frames": ["2020-0212-102546_033566_movie_t-3.jpg", "2020-0212-102546_033566_movie_t-2.jpg", "2020-0212-102546_033566_movie_t-1.jpg", "2020-0212-102546_033566_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban road runs under an elevated structure, a two-lane same-direction roadway with a right-side guardrail and a left curb; the pavement is smooth and traffic is moderate. Ahead in the left lane, a white box truck drives away from the ego car at a steady pace, effectively setting the vehicle's speed. Farther ahead in the right lane, a larger white truck continues straight and slightly slower than the flow, limiting opportunities to pass. Along the left curb, a parked sedan sits near the lane, narrowing usable space beside the ego path. A 50 speed-limit sign is visible ahead under the structure.", "hazard_reasoning": "There is a white truck driving in the left lane, away from the ego-car. Follow the vehicle ahead to maintain safe spacing and avoid collision if it slows."}
{"id": "train_08442", "split": "train", "clip_key": "titan_clip_525_000156_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_525_000156_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_525_000156_movie_t-3_augB1.jpg", "titan_clip_525_000156_movie_t-2_augB1.jpg", "titan_clip_525_000156_movie_t-1_augB1.jpg", "titan_clip_525_000156_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down to avoid collision", "environment_perception": "A narrow urban two-way street without a centerline runs between buildings, the asphalt looks smooth, and traffic is very light. A pedestrian wearing a white shirt and gray pants crosses ahead from the left to the right in front of the ego car, briefly occupying the lane. Farther ahead, a cyclist travels away near the middle of the road in the ego direction, sharing the lane and likely setting the pace. No signals or medians are visible, and nothing obstructs the roadway edges.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and gray pants crossing in front of the ego car, from the left to right side of the road. The driver should slow down to avoid a collision with the pedestrian crossing ahead."}
{"id": "train_08443", "split": "train", "clip_key": "2020-0218-103119_054516_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "054516"}, "frames": ["2020-0218-103119_054516_movie_t-3.jpg", "2020-0218-103119_054516_movie_t-2.jpg", "2020-0218-103119_054516_movie_t-1.jpg", "2020-0218-103119_054516_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane road runs under an elevated structure, with two same-direction lanes visible and smooth pavement; traffic is heavy and mostly stationary. Ahead in the ego lane, a silver box truck is stopped in front of the ego car, blocking the path. In the adjacent right lane, another large truck sits slightly ahead with brake lights on beside the ego vehicle. No traffic signals or speed signs are visible, and tall buildings line the roadside.", "hazard_reasoning": "There is a silver truck stopped in the ego lane, in front of the ego car. The driver should stop to avoid colliding with the stationary truck blocking the lane."}
{"id": "train_08444", "split": "train", "clip_key": "2020-0226-140503_066637_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "066637"}, "frames": ["2020-0226-140503_066637_movie_t-3.jpg", "2020-0226-140503_066637_movie_t-2.jpg", "2020-0226-140503_066637_movie_t-1.jpg", "2020-0226-140503_066637_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban signalized intersection appears on a multi-lane city street with no median and smooth pavement highlighted by red surfacing; the ego vehicle waits at a zebra crosswalk while cross traffic moves steadily. On the near left corner ahead, a pedestrian in black pants and a striped jacket waits to cross toward the right side, and may enter the ego lane when the signal changes. In the intersection ahead, a small white kei truck travels right to left, clearing the junction before the ego proceeds. Farther ahead slightly left, a dark SUV turns right across the box among other vehicles. The pedestrian signal shows red.", "hazard_reasoning": "There is a pedestrian wearing black pants and a striped jacket, and waiting to cross to the right side at the crosswalk ahead at the intersection. The driver should yield because the pedestrian may step into the lane and has the right of way."}
{"id": "train_08445", "split": "train", "clip_key": "2020-0227-104226_037234_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "037234"}, "frames": ["2020-0227-104226_037234_movie_t-3.jpg", "2020-0227-104226_037234_movie_t-2.jpg", "2020-0227-104226_037234_movie_t-1.jpg", "2020-0227-104226_037234_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction has no median, dry pavement, and generally light flow, with the oncoming lane clear. A silver van directly ahead in the ego lane is stopped with brake lights on due to traffic congestion ahead, holding the ego vehicle. Farther ahead in the same lane, a covered truck is also stationary, reinforcing the brief queue and constraining progress.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. As the light ahead is red and traffic is backed up, you should stop to avoid a rear-end collision."}
{"id": "train_08446", "split": "train", "clip_key": "2020-0228-102841_081998_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "081998"}, "frames": ["2020-0228-102841_081998_movie_t-3.jpg", "2020-0228-102841_081998_movie_t-2.jpg", "2020-0228-102841_081998_movie_t-1.jpg", "2020-0228-102841_081998_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the motorcycle ahead.", "environment_perception": "An urban multi-lane road with several same-direction lanes and a right-side barrier appears dry and in good condition, with moderate, steadily flowing traffic. A black motorcycle directly ahead in the ego lane accelerates straight through the junction on a green light, leading the ego car. A white sedan slightly ahead to the left travels straight at similar speed alongside, limiting space for a leftward lane change. A black van ahead in the right lane proceeds straight and keeps that adjacent lane occupied. Farther ahead, small box trucks continue forward in the center lanes, setting the overall pace.", "hazard_reasoning": "There is a black motorcycle driving forward in the ego lane because of the green traffic light, in front of the ego car. The green light could change soon and the motorcycle may brake or stop unexpectedly, so maintain caution."}
{"id": "train_08447", "split": "train", "clip_key": "titan_clip_410_000060_movie", "source": {"subset": "titan", "scenario": "clip_410", "frame": "000060"}, "frames": ["titan_clip_410_000060_movie_t-3.jpg", "titan_clip_410_000060_movie_t-2.jpg", "titan_clip_410_000060_movie_t-1.jpg", "titan_clip_410_000060_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking near roadway", "environment_perception": "An urban commercial street with a single narrow lane and block-paved surface runs between shops, with bollards bordering the edges; traffic is light and the ego vehicle moves steadily. Ahead in the same lane, a small white truck near the storefronts slows or pauses, constraining the ego vehicle's pace. On the right side of the road, a pedestrian in a blue shirt walks away from the ego vehicle along the curb, staying near the sidewalk edge. Farther ahead on the left sidewalk, another pedestrian walks toward the ego vehicle but remains out of the lane. No prominent traffic signals or posted speeds are visible, and there are no unusual obstacles.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and walking on the right side of the road, away from the ego car. The pedestrian could change direction or step onto the roadway unexpectedly, so the driver should be aware."}
{"id": "train_08448", "split": "train", "clip_key": "titan_clip_838_000384_movie", "source": {"subset": "titan", "scenario": "clip_838", "frame": "000384"}, "frames": ["titan_clip_838_000384_movie_t-3.jpg", "titan_clip_838_000384_movie_t-2.jpg", "titan_clip_838_000384_movie_t-1.jpg", "titan_clip_838_000384_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban shopping street with a narrow shared carriageway has tiled pavement in good condition and no lane markings or median; motor traffic is light while pedestrian and bicycle activity is steady. Ahead near the center, a cyclist approaches head-on at low speed and continues straight, reducing lateral clearance in the ego path. On the right edge, a small truck stands stopped with crates in its bed, intruding into the roadway and narrowing the passage. To the right beside this truck, a pedestrian in a brown pullover and brown skirt with a backpack and an umbrella walks along the road because there is no sidewalk, remaining close to the vehicle's path. Farther ahead, several pedestrians stroll and cross in mid-road, spreading across the lane and slowing overall movement.", "hazard_reasoning": "The pedestrian in brown pullover and brown skirt, with a backpack and an umbrella, is walking on the right side of the road because there is no sidewalk. The pedestrian is close to the vehicle path due to lack of sidewalk, so the driver should manoeuvre carefully around them to avoid collision."}
{"id": "train_08449", "split": "train", "clip_key": "titan_clip_986_000090_movie", "source": {"subset": "titan", "scenario": "clip_986", "frame": "000090"}, "frames": ["titan_clip_986_000090_movie_t-3.jpg", "titan_clip_986_000090_movie_t-2.jpg", "titan_clip_986_000090_movie_t-1.jpg", "titan_clip_986_000090_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "be aware of potential pedestrian stepping onto road", "environment_perception": "A narrow two-way urban residential street has smooth pavement, edge lines, and no median, and traffic is light with no same-direction or oncoming vehicles visible. Ahead on the left sidewalk, a pedestrian in a black shirt walks away from the ego vehicle along the curb, remaining separate from the lane. A large 20 marking on the roadway indicates the posted speed. Bicycles and potted plants line the building fronts, but nothing obstructs the travel lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, walking on the left side of the road, away from the ego car, because there is a sidewalk. The pedestrian may enter the roadway unexpectedly, creating a potential hazard."}
{"id": "train_08450", "split": "train", "clip_key": "2020-0207-101955_000702_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "000702"}, "frames": ["2020-0207-101955_000702_movie_t-3.jpg", "2020-0207-101955_000702_movie_t-2.jpg", "2020-0207-101955_000702_movie_t-1.jpg", "2020-0207-101955_000702_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road approaches a signalized intersection, the pavement smooth with a low hedge and guardrail along the right edge. Traffic is moderate and momentarily halted at the light. Ahead in the ego lane, a black vehicle is stopped for the red signal, holding the ego vehicle. In the adjacent same-direction lane on the left, a white box truck creeps forward past the ego and proceeds straight. On the far right at the crosswalk, a large group of pedestrians waits behind the curb. Overhead traffic lights facing the ego direction show red.", "hazard_reasoning": "There is a black mid-SUV stopped in the ego lane because of a red traffic light. Stop because the SUV is halted at a red light requiring you to stop to avoid a rear-end collision."}
{"id": "train_08451", "split": "train", "clip_key": "titan_clip_844_000360_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_844_000360_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_844_000360_movie_t-3_augB1.jpg", "titan_clip_844_000360_movie_t-2_augB1.jpg", "titan_clip_844_000360_movie_t-1_augB1.jpg", "titan_clip_844_000360_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban residential street without a centerline climbs gently uphill; it is a narrow two-way road with smooth pavement and light traffic. A pedestrian in a light shirt and blue jeans moves from the middle of the road toward the right to retrieve their dog, briefly walking in the ego lane before reaching the roadside. Far ahead, a cyclist proceeds slowly uphill near the center in the same direction, occupying the ego path. No oncoming vehicles are visible. A white diamond road marking is painted on the pavement, and a right-side guardrail and a high stone wall on the left border the roadway, with the hill crest ahead limiting forward visibility.", "hazard_reasoning": "There is a pedestrian with dark short hair, wearing blue jeans, and a light shirt walking to retrieve their dog in the middle of the road, walking towards the right side of the road. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_08452", "split": "train", "clip_key": "2020-0213-143552_082629_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "082629"}, "frames": ["2020-0213-143552_082629_movie_t-3.jpg", "2020-0213-143552_082629_movie_t-2.jpg", "2020-0213-143552_082629_movie_t-1.jpg", "2020-0213-143552_082629_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck's lane change", "environment_perception": "An urban expressway with two same-direction lanes runs between high sound barriers, the pavement smooth and traffic light as the car passes under an overpass; bollards and a hatched divider line the left side. Ahead, a blue truck in the ego lane moves left and changes into the adjacent left lane directly in front of the ego vehicle, crossing the ego path as it merges. No other road users are close, and no salient traffic signals or speed signs are visible.", "hazard_reasoning": "There is a blue truck lane changing in front of the ego car, from the ego lane to the left lane. The truck's lane change could reduce available space and require the driver to adjust speed or position."}
{"id": "train_08453", "split": "train", "clip_key": "titan_clip_1298_000312_movie", "source": {"subset": "titan", "scenario": "clip_1298", "frame": "000312"}, "frames": ["titan_clip_1298_000312_movie_t-3.jpg", "titan_clip_1298_000312_movie_t-2.jpg", "titan_clip_1298_000312_movie_t-1.jpg", "titan_clip_1298_000312_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with no median and worn asphalt runs between trees and shopfronts; traffic is light as the left side of the lane ahead is narrowed by roadside works. On the left ahead, several construction trucks and a crane are parked inside a line of traffic cones, occupying part of the ego lane and pushing movement toward the right. Next to the cones, a uniformed worker stands by a right-pointing sign and a cone that indicate a work zone, watching approaching vehicles. Far ahead in the same direction, a small white car continues along the center of the narrowed roadway, moving away and setting the pace through the constricted section.", "hazard_reasoning": "There is a traffic cone, on the left side of the road, indicating a work zone. The cone signals a work zone and potential obstruction, so the driver should slow down to navigate safely."}
{"id": "train_08454", "split": "train", "clip_key": "2020-0226-140503_051276_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "051276"}, "frames": ["2020-0226-140503_051276_movie_t-3.jpg", "2020-0226-140503_051276_movie_t-2.jpg", "2020-0226-140503_051276_movie_t-1.jpg", "2020-0226-140503_051276_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with red pavement runs straight between mid-rise buildings; three same-direction lanes are marked by yellow lines, the surface is dry, and traffic is heavy and slow. A black sedan ahead in the ego lane accelerates gently because of traffic congestion ahead. A white van in the right lane travels alongside slightly ahead, moving with the queue and leaving little room on the right. A silver van in the left lane edges forward near the ego car, keeping pace and narrowing space on that side. A signalized intersection is visible ahead and governs the flow of vehicles.", "hazard_reasoning": "There is a black sedan accelerating slowly in the ego lane because of traffic congestion ahead. You should follow the vehicle steadily to maintain safe spacing and respond to potential sudden stops."}
{"id": "train_08455", "split": "train", "clip_key": "titan_clip_5_000156_movie", "source": {"subset": "titan", "scenario": "clip_5", "frame": "000156"}, "frames": ["titan_clip_5_000156_movie_t-3.jpg", "titan_clip_5_000156_movie_t-2.jpg", "titan_clip_5_000156_movie_t-1.jpg", "titan_clip_5_000156_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around truck", "environment_perception": "A narrow urban street without a marked centerline is paved with brick blocks in good condition, with light traffic but movement slowed by loading activity ahead. A pink truck is stopped on the left in the ego lane while workers unload, with blue crates and equipment protruding into the lane, so the obstruction controls the ego vehicle's pace. A worker pushing a blue handcart proceeds along the center of the lane ahead near the truck, occupying the ego path. On the right edge, a pedestrian walks close to the lane by shop fronts.", "hazard_reasoning": "There is a pink truck stopped on the left side of the road, in the ego lane, because it is being unloaded. The stopped truck obstructs the lane and limits visibility of oncoming traffic and pedestrians, so the driver should carefully manoeuvre around it."}
{"id": "train_08456", "split": "train", "clip_key": "2020-0212-150403_018626_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "018626"}, "frames": ["2020-0212-150403_018626_movie_t-3.jpg", "2020-0212-150403_018626_movie_t-2.jpg", "2020-0212-150403_018626_movie_t-1.jpg", "2020-0212-150403_018626_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop.", "environment_perception": "An urban arterial with two same-direction lanes and no median stretches ahead; the pavement is clean and dry, and traffic is light to moderate with steady flow. A black SUV is stopped directly ahead in the ego lane, temporarily blocking the path and holding the ego car. To the right, a black taxi-style minivan in the adjacent lane travels forward past the ego vehicle, limiting an immediate chance to pass. On the left curb, a person stands beside a parked van with its sliding door open close to the lane edge. Overhead directional signs are visible ahead.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car. Since the SUV is halted directly ahead, the driver should stop immediately to avoid a rear-end collision."}
{"id": "train_08457", "split": "train", "clip_key": "2020-0205-152530_055286_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "055286"}, "frames": ["2020-0205-152530_055286_movie_t-3.jpg", "2020-0205-152530_055286_movie_t-2.jpg", "2020-0205-152530_055286_movie_t-1.jpg", "2020-0205-152530_055286_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs under an elevated structure toward a signalized intersection, with two same-direction lanes and smooth pavement; traffic is moderate and steady. A white sedan directly ahead in the ego lane signals left and shifts into the left side of the intersection, changing lanes in front of the ego car and briefly constraining its path. A light flatbed truck slightly ahead in the adjacent right lane holds a steady course straight, maintaining pace alongside the ego vehicle. A white microvan on the right draws level and continues ahead in its lane, passing close but remaining parallel. Overhead traffic lights mark the junction ahead.", "hazard_reasoning": "There is a white sedan lane changing in front of the ego car, from the ego lane to the left side of the intersection. You should slow down to maintain a safe distance and avoid a potential collision when the sedan merges."}
{"id": "train_08458", "split": "train", "clip_key": "2020-0204-150838_080625_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "080625"}, "frames": ["2020-0204-150838_080625_movie_t-3.jpg", "2020-0204-150838_080625_movie_t-2.jpg", "2020-0204-150838_080625_movie_t-1.jpg", "2020-0204-150838_080625_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck beside you", "environment_perception": "A suburban two-way road with one lane each direction and double yellow centerlines runs past guardrails, roadside machinery, and under an overhead gantry and an overpass; the pavement is dry and traffic is light. The ego proceeds in the left-hand lane beside a white semi truck that is traveling alongside it and slightly ahead. Farther ahead in the same direction, a dark van continues away in lane without affecting the ego. The opposite lane shows no oncoming vehicles. Parked construction equipment and trucks sit on the right shoulder beyond the guardrail, remaining off the carriageway.", "hazard_reasoning": "There is a white semi truck driving alongside of the ego car, in the left lane. Its close proximity can obstruct your view and the truck may merge into your lane unexpectedly, so be aware of its position to maintain safety."}
{"id": "train_08459", "split": "train", "clip_key": "titan_clip_584_000276_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_584_000276_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_584_000276_movie_t-3_augB1.jpg", "titan_clip_584_000276_movie_t-2_augB1.jpg", "titan_clip_584_000276_movie_t-1_augB1.jpg", "titan_clip_584_000276_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "A narrow urban two-way street runs between mid-rise buildings with no median and smooth pavement marked by bicycle sharrows; traffic is light. Ahead, a pedestrian wearing a black shirt and black pants crosses from the right side to the left directly in front of the ego car, moving steadily across the ego lane and occupying its path. Parked vans and a black SUV line the right curb, narrowing the roadway near the crossing area and leaving limited clearance.", "hazard_reasoning": "A pedestrian wearing a black shirt and black pants, is crossing the street in front of the ego car, from the right side to the left side. The driver should yield to avoid colliding with the pedestrian crossing the road."}
{"id": "train_08460", "split": "train", "clip_key": "titan_clip_656_000408_movie", "source": {"subset": "titan", "scenario": "clip_656", "frame": "000408"}, "frames": ["titan_clip_656_000408_movie_t-3.jpg", "titan_clip_656_000408_movie_t-2.jpg", "titan_clip_656_000408_movie_t-1.jpg", "titan_clip_656_000408_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "A narrow urban side street with a single undivided lane runs between buildings; the pavement is smooth and traffic is light but slowed by an obstruction. Ahead on the right in the ego lane, a white truck is stopped and being unloaded with its rear open, partially blocking the path and constraining the ego vehicle's pace. A pedestrian near the right edge walks left across the lane in front of the truck, crossing ahead of the ego vehicle. Another pedestrian on the left sidewalk walks away from the camera and stays off the roadway. Cones and handcarts line the right curb around the unloading area, narrowing the gap.", "hazard_reasoning": "There is a white truck stopped and being unloaded on the right side of the road in the ego lane. The stopped truck and unloading activity partially obstruct the lane, requiring the driver to manoeuvre carefully around it to avoid collision."}
{"id": "train_08461", "split": "train", "clip_key": "2020-0205-103411_059976_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "059976"}, "frames": ["2020-0205-103411_059976_movie_t-3.jpg", "2020-0205-103411_059976_movie_t-2.jpg", "2020-0205-103411_059976_movie_t-1.jpg", "2020-0205-103411_059976_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial with smooth pavement carries heavy, slow traffic, all moving in the same direction between tall buildings. A white box truck travels directly ahead in the ego lane at low speed, effectively setting the ego vehicle's pace. A larger box truck stands ahead-left at the curb with its rear door open and a cone beside it, jutting slightly into the left lane and reducing clearance. A silver van in the lane to the right runs parallel a little ahead, limiting room for a rightward lane change.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08462", "split": "train", "clip_key": "titan_clip_641_000126_movie", "source": {"subset": "titan", "scenario": "clip_641", "frame": "000126"}, "frames": ["titan_clip_641_000126_movie_t-3.jpg", "titan_clip_641_000126_movie_t-2.jpg", "titan_clip_641_000126_movie_t-1.jpg", "titan_clip_641_000126_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban street with no centerline runs straight between buildings and a high wall; the pavement looks smooth and dry, and traffic is light with no vehicles visible. A pedestrian in a white shirt and black pants stands at the right edge of the ego lane, checking his cell phone and lingering close to the travel path. Another person stands by the shopfront on the left near the curb, stationary and off the lane. Farther ahead on the right, a pedestrian walks away along the wall. A leaning signboard at the left frontage protrudes slightly into the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants standing on the right side of the ego lane, because he is checking his cell phone. Since the pedestrian is distracted by his phone and standing close to the driving path, the driver should carefully manoeuvre around him to avoid a collision."}
{"id": "train_08463", "split": "train", "clip_key": "titan_clip_1096_000312_movie", "source": {"subset": "titan", "scenario": "clip_1096", "frame": "000312"}, "frames": ["titan_clip_1096_000312_movie_t-3.jpg", "titan_clip_1096_000312_movie_t-2.jpg", "titan_clip_1096_000312_movie_t-1.jpg", "titan_clip_1096_000312_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked van ahead", "environment_perception": "A narrow urban two-way street with no centerline runs between close buildings, the pavement appears smooth and traffic is light. A large box truck is stationary along the left curb close to the ego vehicle, limiting space at the lane edge. Farther ahead on the left, a white minivan is parked in a marked parking spot, away from the ego car, and remains clear of the through lane. An oncoming car approaches in the distance in the opposite lane without affecting the ego path. A prominent blue P sign on the right advertises parking. A blue plastic crate sits on the roadway beside the truck, forming a small roadside obstacle.", "hazard_reasoning": "There is a white minivan parked on the left side of the road, away from the ego car, because there is a parking spot. Because it narrows the lane and could affect your path, be aware of the parked van ahead."}
{"id": "train_08464", "split": "train", "clip_key": "titan_clip_794_000378_movie", "source": {"subset": "titan", "scenario": "clip_794", "frame": "000378"}, "frames": ["titan_clip_794_000378_movie_t-3.jpg", "titan_clip_794_000378_movie_t-2.jpg", "titan_clip_794_000378_movie_t-1.jpg", "titan_clip_794_000378_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban neighborhood street with a single narrow two-way road, no median, and smooth pavement; traffic is light throughout. A cyclist ahead along the left curb pedals away in the same direction, keeping to the edge and slightly constraining the ego-vehicle's pace. Farther ahead on the right side of the road, a person wearing a white shirt and beige pants cycles away from the ego car, remaining outside the ego lane but within the forward corridor. No oncoming vehicles are present and no active signals or notable signs are visible.", "hazard_reasoning": "There is a person wearing a white shirt and beige pants and cycling on the right side of the road, away from the ego car. The cyclist could unexpectedly move into the vehicle's lane, so the driver should carefully manoeuvre around them for safety."}
{"id": "train_08465", "split": "train", "clip_key": "titan_clip_187_000576_movie", "source": {"subset": "titan", "scenario": "clip_187", "frame": "000576"}, "frames": ["titan_clip_187_000576_movie_t-3.jpg", "titan_clip_187_000576_movie_t-2.jpg", "titan_clip_187_000576_movie_t-1.jpg", "titan_clip_187_000576_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "A narrow two-way urban street with no median and smooth pavement is shown, with light traffic and a road marking indicating 30. A white mini-van ahead in the ego lane proceeds slowly along the center of the lane and briefly pauses, constraining the ego vehicle's pace. On the right edge by a storefront, a pedestrian wearing all black sits on the curb close to the roadway, posing a possible intrusion into the lane. Farther ahead on the left sidewalk, another pedestrian stands near a doorway and remains on the walkway without affecting traffic.", "hazard_reasoning": "There is a pedestrian wearing all black, sitting on the right side of the road. The driver should remain alert as this person could suddenly enter the driving lane."}
{"id": "train_08466", "split": "train", "clip_key": "2020-0129-105040_099882_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "099882"}, "frames": ["2020-0129-105040_099882_movie_t-3.jpg", "2020-0129-105040_099882_movie_t-2.jpg", "2020-0129-105040_099882_movie_t-1.jpg", "2020-0129-105040_099882_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial boulevard with two lanes in each direction and a raised shrub median appears dry and smooth, and traffic flows at a moderate, steady pace. A white truck drives ahead in the ego lane, gradually moving away and setting the ego vehicle's pace. Two small white mini trucks travel farther ahead, one in the ego lane and one in the adjacent right lane, maintaining speed without changing lanes. On the far side of the median, oncoming traffic including a dark van moves past steadily with no interaction due to the divider.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08467", "split": "train", "clip_key": "2020-0213-143552_003910_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "003910"}, "frames": ["2020-0213-143552_003910_movie_t-3.jpg", "2020-0213-143552_003910_movie_t-2.jpg", "2020-0213-143552_003910_movie_t-1.jpg", "2020-0213-143552_003910_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked truck ahead", "environment_perception": "An urban two-way road with no median runs straight on dry pavement, with a curbside green bicycle lane, and traffic is moderate with steady oncoming flow. Ahead in the ego lane by the left curb, a green box truck is parked and stationary, partially occupying the lane and narrowing the path. To the right, a white van approaches in the oncoming lane at a steady speed. Farther ahead beyond the truck, several cars travel away in the same direction without noticeable change.", "hazard_reasoning": "There is a green truck parked in front of the ego car. Be aware because the parked truck ahead may block the lane or reduce the available maneuvering space."}
{"id": "train_08468", "split": "train", "clip_key": "2020-0131-135401_015104_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "015104"}, "frames": ["2020-0131-135401_015104_movie_t-3.jpg", "2020-0131-135401_015104_movie_t-2.jpg", "2020-0131-135401_015104_movie_t-1.jpg", "2020-0131-135401_015104_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield to the stopped vehicle ahead", "environment_perception": "An urban two-lane approach to a signalized intersection has no median and dry, well?arked pavement, with moderate traffic queuing near the stop line. A black hatchback is stopped ahead in the ego left lane for the red signal, holding our lane. A white car in the adjacent right lane is slightly ahead and creeps toward the junction without entering our path. Cross traffic passes through the intersection from left to right while our direction waits. The overhead lights show red, and a blue 40 sign is posted on the left.", "hazard_reasoning": "There is a black hatchback stopped on the left side of the intersection, in the ego lane, because of the red traffic light. The driver should yield to this stopped vehicle to avoid a rear-end collision and ensure a safe approach."}
{"id": "train_08469", "split": "train", "clip_key": "2020-0131-135401_006454_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "006454"}, "frames": ["2020-0131-135401_006454_movie_t-3.jpg", "2020-0131-135401_006454_movie_t-2.jpg", "2020-0131-135401_006454_movie_t-1.jpg", "2020-0131-135401_006454_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane per direction curves gently right, with no median, smooth pavement, and light traffic; bright sun glare from the upper right reduces visibility. A white box truck ahead in the ego lane slows, constraining the ego vehicle's pace. A small white van is stopped at the left curb by a convenience store entrance and could pull out into the ego lane. The oncoming lane appears clear in view, and roadside railings line the right side.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. You should slow down to maintain a safe following distance and avoid collision with the decelerating truck ahead."}
{"id": "train_08470", "split": "train", "clip_key": "2020-0228-150133_047675_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "047675"}, "frames": ["2020-0228-150133_047675_movie_t-3.jpg", "2020-0228-150133_047675_movie_t-2.jpg", "2020-0228-150133_047675_movie_t-1.jpg", "2020-0228-150133_047675_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial carries same-direction traffic in three lanes plus a chevron-separated bus lane on the right; the pavement is dry and the flow is heavy and stop-and-go. A black sedan directly ahead in the ego lane slows because of congestion ahead, constraining the ego vehicle's pace. To the right, a large coach in the dedicated bus lane crawls forward alongside close to the separator, limiting lateral room. Ahead-left, a white hatchback in the neighboring lane creeps ahead in the queue, running parallel to the ego path. Buildings line both sides and distant signal gantries hover over continuous queues, with no unusual obstacles visible.", "hazard_reasoning": "There is a black sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a collision due to the congestion ahead."}
{"id": "train_08471", "split": "train", "clip_key": "titan_clip_1142_000312_movie", "source": {"subset": "titan", "scenario": "clip_1142", "frame": "000312"}, "frames": ["titan_clip_1142_000312_movie_t-3.jpg", "titan_clip_1142_000312_movie_t-2.jpg", "titan_clip_1142_000312_movie_t-1.jpg", "titan_clip_1142_000312_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrians ahead", "environment_perception": "A dense urban commercial street with a single narrow lane in each direction and no median shows smooth pavement and light traffic, with the oncoming lane mostly clear and no vehicles immediately ahead. Ahead in the center of the ego lane, two pedestrians walk away from the camera; one wears an orange skirt while the companion pulls a wheeled suitcase, occupying the lane and effectively setting the ego vehicle's pace. On the right at a parking garage entrance, another pedestrian steps diagonally toward the roadway and could enter the ego lane. Farther ahead along the left edge, several pedestrians move near storefronts but stay close to the curb. Narrow sidewalks and parked bicycles line the left side.", "hazard_reasoning": "Two pedestrians dragging a suitcase and wearing an orange skirt are walking in the middle of the lane, away from the ego car, because there is no sidewalk. The driver should slow down to safely navigate around pedestrians and avoid collision."}
{"id": "train_08472", "split": "train", "clip_key": "titan_clip_1280_000258_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1280_000258_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1280_000258_movie_t-3_augB1.jpg", "titan_clip_1280_000258_movie_t-2_augB1.jpg", "titan_clip_1280_000258_movie_t-1_augB1.jpg", "titan_clip_1280_000258_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of pedestrian crossing ahead", "environment_perception": "An urban street in Japan with two lanes in the ego direction plus a right-turn lane, no physical median, and smooth pavement shows light, steady traffic. A pedestrian wearing black pants is in the middle of the road crossing toward the left side, moving across the ego vehicle's path and becoming immediately relevant. A white car far ahead in the same lane continues straight, gradually pulling away without affecting following distance. Another pedestrian stands on the right sidewalk near a building, walking parallel to traffic and not entering the roadway. No salient traffic signals are close by, and the carriageway remains clear of obstacles.", "hazard_reasoning": "There is a pedestrian in the middle of the road wearing black pants, crossing to the left side of the road. The pedestrian could step into the vehicle's path unexpectedly, so the driver should be cautious to avoid a collision."}
{"id": "train_08473", "split": "train", "clip_key": "titan_clip_449_000414_movie", "source": {"subset": "titan", "scenario": "clip_449", "frame": "000414"}, "frames": ["titan_clip_449_000414_movie_t-3.jpg", "titan_clip_449_000414_movie_t-2.jpg", "titan_clip_449_000414_movie_t-1.jpg", "titan_clip_449_000414_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrians walking towards you", "environment_perception": "A dense urban scene shows a narrow single-lane side street ending at a zebra crosswalk and a larger two-way road; the pavement is smooth and the ego car is stopped while cross-street flow is light. A person in a light blue outfit crosses left to right on the crosswalk directly ahead, occupying the ego path. On the right curb, two pedestrians wearing pink and white shirts walk toward the ego car along the edge near the corner and may step into the crosswalk. In the near lane of the cross street, a black sedan travels rightward across the front as active cross traffic. A red stop sign and a posted speed of 20 are visible at the corner with other directional signs. Bicycles and a parked truck line the sides but stay out of the lane.", "hazard_reasoning": "There are two pedestrians wearing pink and white shirts, and walking towards the ego car, on the right side of the road. They may step into the vehicle's path unexpectedly, so the driver should be cautious of pedestrians walking towards you."}
{"id": "train_08474", "split": "train", "clip_key": "2020-0226-140503_034617_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "034617"}, "frames": ["2020-0226-140503_034617_movie_t-3.jpg", "2020-0226-140503_034617_movie_t-2.jpg", "2020-0226-140503_034617_movie_t-1.jpg", "2020-0226-140503_034617_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and a right-side guardrail runs between high-rise buildings, and traffic is slow near a signalized intersection. The ego travels in the left lane, and a black van directly ahead is stopped with brake lights on because the traffic light ahead shows red, holding the ego vehicle. A small silver minivan slightly ahead to the left in the neighboring lane is also stopped at the signal and stays in its lane. To the right, a white car in the adjacent lane rolls forward toward a right-turn path without edging into the ego lane. Overhead blue direction signs point toward Shutoko and Mejiro, and the red signal is clearly visible ahead.", "hazard_reasoning": "There is a black van stopped in the ego lane because of the red traffic light ahead. The driver must stop to maintain a safe distance and avoid a rear-end collision at the halted vehicle."}
{"id": "train_08475", "split": "train", "clip_key": "2020-0205-152530_048758_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "048758"}, "frames": ["2020-0205-152530_048758_movie_t-3.jpg", "2020-0205-152530_048758_movie_t-2.jpg", "2020-0205-152530_048758_movie_t-1.jpg", "2020-0205-152530_048758_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth red pavement runs straight, divided from oncoming traffic to the right by a planted median; traffic is moderate and starts to move. A white box truck directly ahead in the ego lane accelerates from a stop under a green signal and governs the ego vehicle's pace. A black car in the adjacent right lane accelerates slightly ahead in the same direction, remaining parallel to the ego path. The overhead traffic light facing the approach shows green, and the roadway appears clear of obstacles.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08476", "split": "train", "clip_key": "2020-0228-150133_018737_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "018737"}, "frames": ["2020-0228-150133_018737_movie_t-3.jpg", "2020-0228-150133_018737_movie_t-2.jpg", "2020-0228-150133_018737_movie_t-1.jpg", "2020-0228-150133_018737_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane two-way street with a solid yellow centerline and no median is shown; the pavement is dry and smooth, and traffic in the left-hand ego lane is queued while the oncoming lane to the right is light. A gray van directly ahead in the ego lane stands still because of congestion ahead, holding the ego vehicle. Farther ahead in the same lane, a large bus is also stopped, forming the head of the line. A 40 speed limit sign is posted on the left. A side street opens on the right beside shops.", "hazard_reasoning": "There is a gray van stopped in the ego lane because of traffic congestion ahead. The driver should stop to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_08477", "split": "train", "clip_key": "2020-0220-151845_009973_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "009973"}, "frames": ["2020-0220-151845_009973_movie_t-3.jpg", "2020-0220-151845_009973_movie_t-2.jpg", "2020-0220-151845_009973_movie_t-1.jpg", "2020-0220-151845_009973_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and no physical median is congested, with traffic queued at an intersection. A black van directly ahead in the ego lane is stopped because the traffic signal ahead shows red, holding the ego vehicle. In the adjacent right lane, a large flatbed truck loaded with stacked metal pipes slows to a stop alongside, narrowing lateral space. In the left lane, several cars queue slightly ahead, keeping pace with the signal.", "hazard_reasoning": "There is a black van stopped in front of the ego car in the ego lane, because the light is red. Driver should stop because the van is halted at a red light directly ahead, risking a collision if not slowed."}
{"id": "train_08478", "split": "train", "clip_key": "2020-0204-150838_040207_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "040207"}, "frames": ["2020-0204-150838_040207_movie_t-3.jpg", "2020-0204-150838_040207_movie_t-2.jpg", "2020-0204-150838_040207_movie_t-1.jpg", "2020-0204-150838_040207_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid rear-end collision", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy, stop-and-go traffic amid dense city buildings, and no median is visible. Ahead, a white van in the ego lane is stopped with its brake light on due to congestion, holding the ego vehicle. To the right, a long flatbed truck in the adjacent lane creeps forward alongside, restricting any lateral maneuver. To the left, a silver hatchback in the neighboring lane inches ahead parallel to the ego car, remaining in the queue. An overhead blue lane-use sign indicates several through lanes and a right-turn option ahead.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead on the road. The driver should stop to avoid a rear-end collision with the halted vehicle under slow-moving traffic conditions."}
{"id": "train_08479", "split": "train", "clip_key": "2020-0207-151349_087711_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "087711"}, "frames": ["2020-0207-151349_087711_movie_t-3.jpg", "2020-0207-151349_087711_movie_t-2.jpg", "2020-0207-151349_087711_movie_t-1.jpg", "2020-0207-151349_087711_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial under an elevated structure has two lanes in the ego direction, separated from oncoming traffic by a metal barrier; the pavement is dry and smooth, and overall flow is light. A black motorcycle ahead in the ego lane is stopped for a traffic light up the road, occupying the path. A small car farther ahead in the same lane slows toward the intersection and sets the pace. On the far left, a few oncoming cars move past behind the divider without affecting the ego vehicle. A chevron-marked right shoulder runs along a guardrail and viaduct columns.", "hazard_reasoning": "There is a black motorcycle stopped in the ego-car lane, because of a traffic light ahead. You should slow down to maintain a safe distance and avoid rear-ending the stopped motorcycle."}
{"id": "train_08480", "split": "train", "clip_key": "2020-0129-144857_086243_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "086243"}, "frames": ["2020-0129-144857_086243_movie_t-3.jpg", "2020-0129-144857_086243_movie_t-2.jpg", "2020-0129-144857_086243_movie_t-1.jpg", "2020-0129-144857_086243_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three same-direction lanes runs left of a white guardrail median; the pavement is dry and smooth, with moderate flow in the ego direction and heavier flow on the opposite side. Ahead in the center ego lane, a white van travels steadily and sets the pace for the ego car. In the left lane just ahead, a small flatbed truck loaded with boxes moves slowly near the curb, constraining that lane. Beyond the guardrail on the right, oncoming cars pass in the opposite direction without interacting.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08481", "split": "train", "clip_key": "2020-0129-105040_006171_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "006171"}, "frames": ["2020-0129-105040_006171_movie_t-3.jpg", "2020-0129-105040_006171_movie_t-2.jpg", "2020-0129-105040_006171_movie_t-1.jpg", "2020-0129-105040_006171_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way road without a median runs between mid-rise buildings, the pavement dry and in good condition, with moderate traffic. A white box truck directly ahead in the ego lane slows, constraining the ego vehicle's speed. To the right, two oncoming trucks proceed in their lanes, remaining outside the ego path. Farther ahead near the right edge, a small oncoming van moves steadily along its lane with no interaction. An overhead blue guide sign spans the roadway ahead.", "hazard_reasoning": "There is a white truck, slowing, in front of the ego car, in the ego lane. Because the truck is slowing down, the driver should reduce speed to maintain a safe following distance."}
{"id": "train_08482", "split": "train", "clip_key": "2020-0228-102841_085598_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "085598"}, "frames": ["2020-0228-102841_085598_movie_t-3.jpg", "2020-0228-102841_085598_movie_t-2.jpg", "2020-0228-102841_085598_movie_t-1.jpg", "2020-0228-102841_085598_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two lanes in the ego direction has smooth pavement and a marked crosswalk at an intersection; traffic is light to moderate and briefly queued. A white sedan is stopped directly ahead in the ego lane at the stop line, constraining the ego car's movement. Just beyond the crosswalk, a small three-wheeled scooter rides straight through the intersection, moving away from the queue and clearing the path ahead. In the right adjacent lane, a white hatchback waits slightly ahead at the line, positioned to proceed alongside the ego car when traffic moves. Along the left curb, a work truck stands by red cones and barricades that narrow the shoulder, creating a minor roadside obstruction.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, in front of the ego car. The driver should stop to avoid a collision with the halted vehicle ahead in this situation."}
{"id": "train_08483", "split": "train", "clip_key": "titan_clip_52_000402_movie", "source": {"subset": "titan", "scenario": "clip_52", "frame": "000402"}, "frames": ["titan_clip_52_000402_movie_t-3.jpg", "titan_clip_52_000402_movie_t-2.jpg", "titan_clip_52_000402_movie_t-1.jpg", "titan_clip_52_000402_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential intersection opens onto a narrow two-way local road without a median; the asphalt is dry and intact, and traffic is very light. A pedestrian with a backpack steps from the right sidewalk and walks left across the front of the vehicle within the intersection, directly occupying the intended path and momentarily controlling the pace. No moving vehicles are visible along the road ahead in either direction, while a parked bicycle and bins remain on the left curbside.", "hazard_reasoning": "No hazards are present; the road is clear with no vehicles, pedestrians, or obstacles, so the driver can continue driving at a normal speed."}
{"id": "train_08484", "split": "train", "clip_key": "2020-0213-143552_053782_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "053782"}, "frames": ["2020-0213-143552_053782_movie_t-3.jpg", "2020-0213-143552_053782_movie_t-2.jpg", "2020-0213-143552_053782_movie_t-1.jpg", "2020-0213-143552_053782_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction and a raised median separating oncoming traffic has smooth pavement and moderate flow that slows near a signalized intersection. A white box truck directly ahead in the ego lane slows toward the stop line at a red traffic light, setting the pace for the ego vehicle. On the far side of the median, several oncoming trucks proceed toward the intersection without affecting the ego path. Another small truck in the adjacent rightward same-direction lane ahead also reduces speed as it nears the red signal. Overhead traffic signals are clearly visible showing red.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane, because of a red traffic light. The ego driver needs to stop promptly to avoid colliding with the slowing truck and to comply with the red signal."}
{"id": "train_08485", "split": "train", "clip_key": "titan_clip_849_000378_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_849_000378_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_849_000378_movie_t-3_augB1.jpg", "titan_clip_849_000378_movie_t-2_augB1.jpg", "titan_clip_849_000378_movie_t-1_augB1.jpg", "titan_clip_849_000378_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with a single lane and no median uses block paving, and traffic flow is slow because delivery trucks are stopped along the right curb. Ahead, a pedestrian in a white shirt and black pants crosses the ego lane from right to left directly in front of the vehicle toward the left side, briefly occupying the path. On the left just ahead, another pedestrian with shopping bags walks along the curb toward the left edge and remains outside the lane. To the right, two stopped box trucks line the curb, narrowing the roadway and partly blocking the forward view toward additional service vehicles in the distance.", "hazard_reasoning": "A pedestrian wearing a white shirt with black pants is crossing in front of the ego car to the left side of the lane. The parked trucks restrict visibility ahead, increasing the collision risk if speed is not reduced."}
{"id": "train_08486", "split": "train", "clip_key": "2020-0205-152530_063793_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "063793"}, "frames": ["2020-0205-152530_063793_movie_t-3.jpg", "2020-0205-152530_063793_movie_t-2.jpg", "2020-0205-152530_063793_movie_t-1.jpg", "2020-0205-152530_063793_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway with two same-direction lanes runs under elevated ramps, bounded by guardrails on both sides, with dry, well-kept pavement and heavy, slow-moving traffic. A gray box truck directly ahead in the ego lane decelerates because congestion builds ahead, constraining the ego vehicle's pace. To the left, a blue container semi in the adjacent lane travels slightly ahead while slowing, blocking an immediate overtake. No signals are visible, and there are no pedestrians or cyclists; the scene remains confined by barriers and overpasses without other distinct hazards.", "hazard_reasoning": "There is a gray truck slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to adjust to the reduced speed of the truck ahead and maintain a safe distance to avoid collision."}
{"id": "train_08487", "split": "train", "clip_key": "2020-0218-103119_001006_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "001006"}, "frames": ["2020-0218-103119_001006_movie_t-3.jpg", "2020-0218-103119_001006_movie_t-2.jpg", "2020-0218-103119_001006_movie_t-1.jpg", "2020-0218-103119_001006_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the van's lane change", "environment_perception": "An urban multi-lane two-way arterial with smooth pavement and no physical median unfolds ahead, and traffic is light to moderate moving steadily. A white van ahead in the ego lane signals and shifts right into the adjacent same-direction lane, then increases its gap as it drives away from the ego car. A dark minivan slightly ahead to the left continues straight in the leftmost same-direction lane, pacing the flow without changing lanes. An oncoming small white car travels toward us in the right-side lanes, remaining in its lane and posing no conflict. Pedestrians stand at the left curb near a wide crosswalk, waiting as the vehicles pass.", "hazard_reasoning": "There is a white van changing lanes, from the ego lane to the right lane, in front of the ego car, and driving away from the ego car. Drivers should be aware of this lane change because the van's lateral movement may reduce your space and require you to adjust your path."}
{"id": "train_08488", "split": "train", "clip_key": "2020-0220-102630_054620_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "054620"}, "frames": ["2020-0220-102630_054620_movie_t-3.jpg", "2020-0220-102630_054620_movie_t-2.jpg", "2020-0220-102630_054620_movie_t-1.jpg", "2020-0220-102630_054620_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane street lined with mid-rise buildings appears, with the ego car in the leftmost of two same-direction lanes beside a hedge-lined curb on smooth pavement; traffic is heavy and mostly stop-and-go. A white van immediately ahead in the ego lane is stopped due to congestion and blocks the path, holding the ego vehicle. To the right, a yellow minivan and other cars creep forward in the adjacent lane alongside the ego car, limiting any chance to merge. Farther ahead, a box truck and a dense queue of vehicles in both lanes remain nearly stationary, sustaining the jam.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with stationary vehicles and maintain a safe following distance."}
{"id": "train_08489", "split": "train", "clip_key": "2020-0228-102841_068970_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_068970_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_068970_movie_t-3_augB1.jpg", "2020-0228-102841_068970_movie_t-2_augB1.jpg", "2020-0228-102841_068970_movie_t-1_augB1.jpg", "2020-0228-102841_068970_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "On a narrow urban two-way street with smooth pavement and no median, the ego car moves slowly amid light traffic. A pedestrian wearing a gray jacket and carrying a backpack crosses directly ahead from the left to the right, causing the ego vehicle to yield. A silver microvan is stopped along the left curb just beyond the crossing, remaining stationary and narrowing the usable lane. On the right sidewalk a person stands near a parked van by the curb, waiting close to the roadway and may step out. Orange cones and low railings line the left edge, and no traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a gray jacket, carrying a backpack, and crossing the street, in front of the ego-car, from the left to the right side. The pedestrian is crossing directly ahead in the vehicle's path, so the driver should slow down to avoid collision."}
{"id": "train_08490", "split": "train", "clip_key": "2020-0207-151349_088092_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "088092"}, "frames": ["2020-0207-151349_088092_movie_t-3.jpg", "2020-0207-151349_088092_movie_t-2.jpg", "2020-0207-151349_088092_movie_t-1.jpg", "2020-0207-151349_088092_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes and a central divider approaches a signalized intersection; the pavement looks smooth and traffic is moderate. Ahead in the ego lane, a gray-and-black motorcycle is stopped for the red light, holding the ego vehicle. To the left, another rider on a scooter waits abreast in the adjacent lane. A pedestrian crosses the zebra ahead from right to left, occupying the ego path. On the cross street, a white car travels right to left through the junction. The overhead signal facing the ego is red, and strong low sun glare reduces contrast.", "hazard_reasoning": "There is a gray-and-black motorcycle stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop to avoid a collision with the halted motorcycle and comply with the signal."}
{"id": "train_08491", "split": "train", "clip_key": "2020-0225-102455_014853_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "014853"}, "frames": ["2020-0225-102455_014853_movie_t-3.jpg", "2020-0225-102455_014853_movie_t-2.jpg", "2020-0225-102455_014853_movie_t-1.jpg", "2020-0225-102455_014853_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban signalized intersection on a smooth two-way road with no median is seen from a front-facing car waiting in the left lane; traffic is light. Directly ahead, a pedestrian walks across the zebra crosswalk from right to left in front of the car while the light is red, so the ego vehicle remains stopped. On the far right by the sidewalk, a cyclist rolls toward the junction and continues along the edge, not entering the lane. On the cross street ahead, a few cars move leftward through the intersection. The traffic signal facing the ego shows red, and no obstacles are visible.", "hazard_reasoning": "There is a pedestrian in front of the ego car, crossing the pedestrian crosswalk to the left side, because of the red light. The driver should stop to yield to the pedestrian and prevent a potential collision."}
{"id": "train_08492", "split": "train", "clip_key": "titan_clip_60_000588_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_60_000588_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_60_000588_movie_t-3_augB1.jpg", "titan_clip_60_000588_movie_t-2_augB1.jpg", "titan_clip_60_000588_movie_t-1_augB1.jpg", "titan_clip_60_000588_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the bicycle", "environment_perception": "An urban two-way street with buildings tight to the curb has no median and smooth pavement, and traffic is light as the ego vehicle proceeds left of center. A bicycle on the right side near the foreground is parked with its front wheel sticking out into the road, potentially encroaching on the ego lane. A pedestrian on the left edge close ahead walks in the same direction along the curb, remaining close to the travel path. Farther ahead, several pedestrians are in the roadway near a side street, moving across the lane area. Parked vehicles on the right, including a white sedan protruding from a driveway and a white van at the curb, further narrow the passage.", "hazard_reasoning": "There is a bicycle on the right side of the road sticking out into the road. The bicycle protrudes into the driving lane, requiring the driver to carefully manoeuvre around it to avoid collision."}
{"id": "train_08493", "split": "train", "clip_key": "2020-0220-102630_010874_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "010874"}, "frames": ["2020-0220-102630_010874_movie_t-3.jpg", "2020-0220-102630_010874_movie_t-2.jpg", "2020-0220-102630_010874_movie_t-1.jpg", "2020-0220-102630_010874_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement runs between mid-rise buildings, with a guardrail on the right and construction fencing on the left; traffic is moderate and compresses toward a bottleneck. A gray sedan directly ahead in the ego lane comes to a stop because of congestion ahead, constraining the ego vehicle. Farther ahead in the same lane a large cargo truck queues and inches forward, contributing to the slowdown. In the right lane a white box truck continues ahead at a similar low speed without merging. A pedestrian walks along the left sidewalk near the construction site, staying off the roadway.", "hazard_reasoning": "There's a gray sedan that has stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The stopped vehicle indicates a queue that requires you to stop promptly to avoid a collision."}
{"id": "train_08494", "split": "train", "clip_key": "2020-0129-105040_049785_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "049785"}, "frames": ["2020-0129-105040_049785_movie_t-3.jpg", "2020-0129-105040_049785_movie_t-2.jpg", "2020-0129-105040_049785_movie_t-1.jpg", "2020-0129-105040_049785_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban corridor beneath an elevated expressway carries a narrow single-lane road with a solid yellow centerline, bounded by a concrete wall on the left and a barrier on the right; the pavement is smooth and the lane curves gently right with light traffic. A car far ahead in the same direction proceeds steadily through the bend, mildly setting the ego vehicle's pace. No oncoming lane is visible and no salient traffic signals or signs appear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08495", "split": "train", "clip_key": "2020-0131-135401_074120_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "074120"}, "frames": ["2020-0131-135401_074120_movie_t-3.jpg", "2020-0131-135401_074120_movie_t-2.jpg", "2020-0131-135401_074120_movie_t-1.jpg", "2020-0131-135401_074120_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with three lanes in the ego direction, no physical median, and smooth pavement carries heavy queuing traffic at an intersection. A black hatchback directly ahead in the ego lane is stopped for a red signal, holding the ego vehicle. A large white box truck ahead in the left lane is also stopped in the queue, masking the view of the intersection and limiting space. A silver van slightly ahead in the right lane creeps forward alongside without merging. An overhead lane sign shows two through lanes and a right-turn lane to the right.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of red traffic lights. The driver must stop to avoid colliding with the stationary vehicle at the light."}
{"id": "train_08496", "split": "train", "clip_key": "2020-0212-102546_053207_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "053207"}, "frames": ["2020-0212-102546_053207_movie_t-3.jpg", "2020-0212-102546_053207_movie_t-2.jpg", "2020-0212-102546_053207_movie_t-1.jpg", "2020-0212-102546_053207_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road with left-side traffic and no physical median has smooth pavement and moderate flow as the scene approaches a wide signalized intersection. A silver van drives ahead in the ego lane moving away from the car and sets the immediate pace. To the left, a large green-and-white city bus in the adjacent same-direction lane continues straight slightly ahead, remaining parallel. On the opposite side, a chrome truck approaches in the oncoming right lanes through the intersection but stays separated by the center lines. Additional same-direction cars appear farther ahead across lanes, moving steadily.", "hazard_reasoning": "There is a silver van driving in the ego lane away from the ego car. Driver should be aware because this moving van may change lanes or slow unexpectedly at the intersection."}
{"id": "train_08497", "split": "train", "clip_key": "titan_clip_1327_000474_movie", "source": {"subset": "titan", "scenario": "clip_1327", "frame": "000474"}, "frames": ["titan_clip_1327_000474_movie_t-3.jpg", "titan_clip_1327_000474_movie_t-2.jpg", "titan_clip_1327_000474_movie_t-1.jpg", "titan_clip_1327_000474_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the van carefully", "environment_perception": "A narrow urban two-way street runs between tall buildings with no median and dry, slightly worn pavement; traffic is light. A white van is parked along the left curb in the ego lane, narrowing the usable lane. Ahead on the right edge, a man pushes a blue handcart toward the camera within the travel lane, limiting available passing space beside the van. Another pedestrian on the far right walks away along the curb and stays near the edge. A blue parking sign and a nearby no-parking sign are posted on a pole by the sidewalk.", "hazard_reasoning": "There is a white van parked on the left side of the road, in the ego lane. This parked van reduces visibility and blocks the lane, so the driver should manoeuvre around the van carefully."}
{"id": "train_08498", "split": "train", "clip_key": "2020-0127-132751_078742_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "078742"}, "frames": ["2020-0127-132751_078742_movie_t-3.jpg", "2020-0127-132751_078742_movie_t-2.jpg", "2020-0127-132751_078742_movie_t-1.jpg", "2020-0127-132751_078742_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban four-lane road with a narrow raised median and smooth dry asphalt extends toward an intersection, and traffic is light with steady flow. Ahead near the left edge of the ego lane, a woman with a child crosses from the left to the right in the middle of the roadway, moving across the ego vehicle's path. In the oncoming lanes to the right, a white bus approaches at a constant speed while remaining in its lane. Far ahead in the same direction, a small car continues away in the left lane with ample gap. An overhead pedestrian footbridge and suspended traffic signals appear before the junction in the distance.", "hazard_reasoning": "There is a woman and a child crossing the street in the middle of the road, from the left to the right side of the road. The driver must stop to avoid a collision with the crossing pedestrians."}
{"id": "train_08499", "split": "train", "clip_key": "2020-0221-115122_005353_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "005353"}, "frames": ["2020-0221-115122_005353_movie_t-3.jpg", "2020-0221-115122_005353_movie_t-2.jpg", "2020-0221-115122_005353_movie_t-1.jpg", "2020-0221-115122_005353_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "A busy urban multi-lane road with tall buildings and dry pavement carries heavy, mostly stopped same-direction traffic. The gray sedan directly ahead in the ego lane is stopped because of congestion, blocking the path until the queue moves. In the right adjacent lane slightly ahead, a white hatchback creeps forward parallel to the ego vehicle and limits opportunities to change lanes. Farther ahead and to the right, several vans and cars queue tightly and inch ahead, forming the bottleneck that controls the flow. Parked vehicles and bicycles line the left curb outside the lane, slightly narrowing the roadside but not entering traffic.", "hazard_reasoning": "There is a gray sedan stopped in the ego lane because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid colliding with the halted traffic."}
{"id": "train_08500", "split": "train", "clip_key": "2020-0218-103119_031402_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "031402"}, "frames": ["2020-0218-103119_031402_movie_t-3.jpg", "2020-0218-103119_031402_movie_t-2.jpg", "2020-0218-103119_031402_movie_t-1.jpg", "2020-0218-103119_031402_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with at least two lanes in the ego direction; the pavement is smooth with a few dark patches, and traffic is light to moderate. A white truck directly ahead in the ego lane slows, constraining the ego car's pace. A small silver van travels ahead in the adjacent right lane at a steady speed, remaining clear of the ego lane. At the right curb, a dark car is stopped at the roadside. Overhead, a blue direction sign points toward Oji, Hongo, and Gokokuji, and a pedestrian overpass spans the roadway ahead.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane. The truck's reduced speed may require the driver to slow down to maintain a safe following distance."}
{"id": "train_08501", "split": "train", "clip_key": "titan_clip_1091_000108_movie", "source": {"subset": "titan", "scenario": "clip_1091", "frame": "000108"}, "frames": ["titan_clip_1091_000108_movie_t-3.jpg", "titan_clip_1091_000108_movie_t-2.jpg", "titan_clip_1091_000108_movie_t-1.jpg", "titan_clip_1091_000108_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban residential street with left-side travel runs between closely spaced buildings, with edge lines but no centerline or median and smooth asphalt; it bends slightly left ahead. Traffic is very light, with no same-direction vehicles ahead and no oncoming traffic visible along the corridor. No pedestrians or cyclists are present near the ego path, and the lane ahead appears clear. No signals or posted speed signs stand out. Potted plants and dense shrubs along the right curb and walls tight to the left confine the roadway and limit sight around the upcoming bend, though nothing intrudes into the lane.", "hazard_reasoning": "No caption provided. There are no immediate hazards detected in this quiet intersection, so the driver can proceed normally."}
{"id": "train_08502", "split": "train", "clip_key": "2020-0218-103119_017496_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0218-103119_017496_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0218-103119_017496_movie_t-3_augB1.jpg", "2020-0218-103119_017496_movie_t-2_augB1.jpg", "2020-0218-103119_017496_movie_t-1_augB1.jpg", "2020-0218-103119_017496_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial carries two lanes in the ego direction with a chevroned painted median and dry, slightly worn pavement, and traffic is moderate to heavy with slowing flow near an intersection. A white hatchback directly ahead in the ego lane slows and gradually pulls away from the camera because of congestion ahead. To its left, a large box truck in the adjacent same-direction lane also decelerates, constraining forward visibility and pacing the movement. On the right side beyond the median markings, oncoming vans and cars proceed steadily in their lanes without interacting with the ego path. Distant overhead signals are visible but their aspects are unclear.", "hazard_reasoning": "There is a white hatchback slowing down in the ego lane, moving away from the ego car, because of traffic congestion ahead. Slow down to maintain a safe distance as the vehicle ahead reduces speed due to congestion."}
{"id": "train_08503", "split": "train", "clip_key": "2020-0220-102630_034527_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "034527"}, "frames": ["2020-0220-102630_034527_movie_t-3.jpg", "2020-0220-102630_034527_movie_t-2.jpg", "2020-0220-102630_034527_movie_t-1.jpg", "2020-0220-102630_034527_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down for vehicle merging ahead", "environment_perception": "An urban two-lane road curves right past mid-rise buildings, with a metal guardrail on the right; the dry pavement looks worn and traffic moves at a moderate pace. Ahead, a green sedan changes from the left lane into the ego lane, briefly entering the ego vehicle's path. To the right, a white car continues in the adjacent same-direction lane around the bend at a similar speed without merging. On the left near the curb by the trees, a white box truck stands stopped beside the roadway and does not move into traffic.", "hazard_reasoning": "There is a green sedan changing from the left lane to the ego lane ahead on the road. The sedan's lane change could encroach on the ego-vehicle's space, so the driver should slow down for vehicle merging ahead to maintain a safe distance."}
{"id": "train_08504", "split": "train", "clip_key": "2020-0207-101955_085042_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "085042"}, "frames": ["2020-0207-101955_085042_movie_t-3.jpg", "2020-0207-101955_085042_movie_t-2.jpg", "2020-0207-101955_085042_movie_t-1.jpg", "2020-0207-101955_085042_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban expressway ramp with a single lane runs between high sound walls and concrete barriers; the pavement is smooth and traffic is light, with a parallel carriageway to the right. A small flatbed truck directly ahead in the ego lane travels steadily and sets the following gap. Farther ahead, a blue truck in the same lane slows as congestion builds ahead, which further restrains our pace. Cars on the parallel roadway to the right move in the same direction behind the barrier and remain separate from our path.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, because of congestion ahead. The driver should slow down to maintain a safe following distance as traffic congestion may cause further deceleration."}
{"id": "train_08505", "split": "train", "clip_key": "2020-0207-151349_011190_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "011190"}, "frames": ["2020-0207-151349_011190_movie_t-3.jpg", "2020-0207-151349_011190_movie_t-2.jpg", "2020-0207-151349_011190_movie_t-1.jpg", "2020-0207-151349_011190_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows a single-lane road curving right, bordered by a metal guardrail and construction fencing; the pavement is dry and smooth, and traffic is light with no vehicles ahead. Two pedestrians on the left sidewalk near the start of the curve walk along the fence, staying on the walkway and not entering the lane. A cyclist to the right beyond the guardrail rides on a separated path parallel to the curve, with no immediate interaction with the vehicle. A right-bend chevron sign stands beside the guardrail marking the curve. Strong sun glare from the upper left briefly washes the view of the buildings.", "hazard_reasoning": "No hazards identified; the road ahead is clear and unobstructed."}
{"id": "train_08506", "split": "train", "clip_key": "2020-0227-104226_026047_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "026047"}, "frames": ["2020-0227-104226_026047_movie_t-3.jpg", "2020-0227-104226_026047_movie_t-2.jpg", "2020-0227-104226_026047_movie_t-1.jpg", "2020-0227-104226_026047_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of cones narrowing the roadway", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway with three same-direction lanes and smooth pavement; traffic is light and moves steadily. The leftmost lane is closed by a work zone marked by a continuous line of orange traffic cones. A small black car ahead in the center lane continues straight at a moderate speed, setting the ego vehicle's pace. A line of work trucks is stopped along the left within the coned-off area, remaining outside the active lane. A blue van is stopped on the right shoulder beneath the viaduct but stays clear of the ego lane. Overhead blue direction boards span the road, and no signals or speed signs are prominent.", "hazard_reasoning": "There are orange traffic cones on the left side of the road. The cones narrow the available lane width and could force sudden steering adjustments, so the driver should be aware of this hazard."}
{"id": "train_08507", "split": "train", "clip_key": "titan_clip_1147_000462_movie", "source": {"subset": "titan", "scenario": "clip_1147", "frame": "000462"}, "frames": ["titan_clip_1147_000462_movie_t-3.jpg", "titan_clip_1147_000462_movie_t-2.jpg", "titan_clip_1147_000462_movie_t-1.jpg", "titan_clip_1147_000462_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street without a center line runs between shops, the worn pavement dry and traffic light; no oncoming vehicles appear as the flow slows for a stopped truck ahead. Near the center-right ahead, a pedestrian in a white T-shirt and black shorts carrying a handbag walks leftward across the street despite the absence of a marked crosswalk, potentially entering the ego vehicle's path. A white box delivery truck is stopped along the right edge just ahead, protruding into the lane and constraining the passage. A flatbed truck stands parked at the left curb in the foreground, further narrowing the roadway, while a few other pedestrians stay on the sidewalks.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt with black shorts, carrying a handbag, and crossing the street, in front of the ego car to the right side, because there is no crosswalk. The pedestrian may step into the vehicle's path unexpectedly, so the driver should stop to avoid a collision."}
{"id": "train_08508", "split": "train", "clip_key": "titan_clip_1036_000342_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1036_000342_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1036_000342_movie_t-3_augB1.jpg", "titan_clip_1036_000342_movie_t-2_augB1.jpg", "titan_clip_1036_000342_movie_t-1_augB1.jpg", "titan_clip_1036_000342_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with mid-rise buildings and a single forward lane has smooth pavement and light same-direction traffic, with construction fencing on the left and a solid wall with bollards on the right forming a narrow corridor. A dark van is stopped along the left curb near the ego lane, and a person stands at its open door, slightly encroaching into the roadway. A black car ahead in the ego lane continues straight over a zebra crossing, setting the pace. Pedestrians are visible on both sidewalks near the crossing, with a few standing at the edges of the crosswalk on the right, while others walk along the left behind the barriers.", "hazard_reasoning": "There is a cyclist wearing a blue shirt with shorts cycling toward the ego car to the right side of the road. The cyclist's path intersects the vehicle's lane, so the driver should slow down to prevent a collision."}
{"id": "train_08509", "split": "train", "clip_key": "2020-0214-145407_069640_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "069640"}, "frames": ["2020-0214-145407_069640_movie_t-3.jpg", "2020-0214-145407_069640_movie_t-2.jpg", "2020-0214-145407_069640_movie_t-1.jpg", "2020-0214-145407_069640_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane divided arterial with a low hedge median and smooth asphalt runs between mid-rise buildings as traffic is moderate to heavy and slows near a pedestrian overpass. A white sedan directly ahead in the ego lane decelerates because of congestion ahead, constraining the ego vehicle's pace. A silver hatchback slightly ahead to the left proceeds straight in the adjacent lane at a similar speed and stays in its lane. Farther ahead, clusters of cars fill the multiple same-direction lanes and tighten gaps toward the slowdown. Oncoming traffic beyond the median flows separately. An overhead blue directional sign in Japanese spans the roadway.", "hazard_reasoning": "There is a white sedan slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance in congested traffic."}
{"id": "train_08510", "split": "train", "clip_key": "titan_clip_542_000138_movie", "source": {"subset": "titan", "scenario": "clip_542", "frame": "000138"}, "frames": ["titan_clip_542_000138_movie_t-3.jpg", "titan_clip_542_000138_movie_t-2.jpg", "titan_clip_542_000138_movie_t-1.jpg", "titan_clip_542_000138_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the stopped van ahead", "environment_perception": "An urban neighborhood street with a single narrow lane and no median runs straight ahead on smooth pavement, and overall traffic is light. A white van is stopped ahead in the ego lane for unloading, which blocks the lane and constrains the ego vehicle's pace. Two pedestrians walk along the right sidewalk near the van, passing the unloading area while staying by the curb. A white car is visible inside the fenced parking lot to the left, parallel to the road and not interacting with traffic. A painted 20 on the roadway indicates the speed zone, and metal railings and tight margins line both sides of the lane, creating a constrained corridor.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because it is being unloaded. The stopped van may force an unexpected slowdown or require a lane change, so the driver should remain alert."}
{"id": "train_08511", "split": "train", "clip_key": "2020-0203-114632_026531_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "026531"}, "frames": ["2020-0203-114632_026531_movie_t-3.jpg", "2020-0203-114632_026531_movie_t-2.jpg", "2020-0203-114632_026531_movie_t-1.jpg", "2020-0203-114632_026531_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes curves left, the pavement is smooth, and a red side lane on the right is segregated by flexible bollards; traffic is heavy and slow. A black van ahead in the ego lane slows because of congestion, setting the ego vehicle's pace. To its left, a silver microvan travels slightly behind in the adjacent lane at low speed, remaining alongside as the queue forms. Farther ahead in the left lane, a white SUV also slows with the jam and offers no clear gap to change lanes. Pedestrians cluster on the right-side sidewalk near a building and walk along the fence, staying clear of the roadway.", "hazard_reasoning": "There is a black van, slowing, in front of the ego car, in the ego lane, because of traffic congestion ahead. The black van is slowing due to congestion ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_08512", "split": "train", "clip_key": "2020-0131-103016_074911_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "074911"}, "frames": ["2020-0131-103016_074911_movie_t-3.jpg", "2020-0131-103016_074911_movie_t-2.jpg", "2020-0131-103016_074911_movie_t-1.jpg", "2020-0131-103016_074911_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop in time to avoid collision.", "environment_perception": "An urban multi-lane arterial runs between tall buildings on a smooth surface, with heavy stop-and-go traffic and no visible median. Movement remains slow throughout the scene. A white minivan stopped in the ego lane ahead, because of congestion, holds the ego car. A large box truck in the lane to the right creeps forward beside the ego vehicle, staying near the lane line and confining space on that side. A black taxi alongside in the left lane is stationary, matching the queue and limiting opportunities to change lanes. Farther ahead, several trucks across the lanes inch forward, forming the bottleneck. An overhead blue lane-use sign indicates multiple straight-ahead lanes.", "hazard_reasoning": "There is a white minivan stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The halted vehicle poses a rear-end collision risk, so you must stop promptly to maintain safety."}
{"id": "train_08513", "split": "train", "clip_key": "2020-0203-154554_073928_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "073928"}, "frames": ["2020-0203-154554_073928_movie_t-3.jpg", "2020-0203-154554_073928_movie_t-2.jpg", "2020-0203-154554_073928_movie_t-1.jpg", "2020-0203-154554_073928_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A tree-lined urban two-way road with one lane per direction and no median appears, the pavement dry and traffic heavy with a queue ahead. An orange compact hatchback directly ahead in the ego lane slows in the queue, constraining the ego car's pace due to congestion. A motorcyclist slightly ahead and to the left rides forward along the left edge past the line of cars, moving close to the ego lane's path. In the opposite direction to the right, a white van and several following cars approach in their lane near the centerline, keeping the corridor narrow. A zebra crossing spans the foreground and an overhead gantry sign is visible.", "hazard_reasoning": "There is an orange compact hatchback slowing down in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adapt to the congested traffic."}
{"id": "train_08514", "split": "train", "clip_key": "titan_clip_35_000120_movie", "source": {"subset": "titan", "scenario": "clip_35", "frame": "000120"}, "frames": ["titan_clip_35_000120_movie_t-3.jpg", "titan_clip_35_000120_movie_t-2.jpg", "titan_clip_35_000120_movie_t-1.jpg", "titan_clip_35_000120_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban commercial street with a single narrow lane and no median is paved with block-patterned asphalt, and vehicle flow is light but slow. Ahead in the ego lane, a gray minivan slows and creeps because congestion builds farther up the street, constraining the ego car's pace. On the right, several pedestrians walk close to the curb, and one at a garage driveway moves near the lane and may enter the ego path. On the left, a white delivery truck is stopped at the curb while a pedestrian passes its front, narrowing the usable lane. No oncoming vehicles are visible, and progress remains limited by the slow lead vehicle and nearby foot traffic.", "hazard_reasoning": "There is a gray sedan slowing down in the front of the ego-car, in the ego lane, because of traffic congestion ahead. The gray sedan ahead is reducing speed due to congestion, so the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_08515", "split": "train", "clip_key": "titan_clip_313_000438_movie", "source": {"subset": "titan", "scenario": "clip_313", "frame": "000438"}, "frames": ["titan_clip_313_000438_movie_t-3.jpg", "titan_clip_313_000438_movie_t-2.jpg", "titan_clip_313_000438_movie_t-1.jpg", "titan_clip_313_000438_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian walking on roadside", "environment_perception": "A narrow urban two-way street with no center divider runs between buildings, the pavement looks smooth and traffic is light with no moving vehicles near the ego car. Ahead on the right, two pedestrians, including one wearing a white shirt, walk away in the roadway where there is no sidewalk, and they could edge into the ego lane. Farther ahead on the left, another pedestrian proceeds away along the sidewalk behind a railing and remains separated from traffic. On the right at the curb by a convenience store, a white sedan is parked near the entrance, reducing space along the edge but staying stationary.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the right side of the road, away from the ego car, because there is no sidewalk on the right. The driver should remain vigilant and reduce speed because the pedestrian may unexpectedly enter the roadway, creating a collision risk."}
{"id": "train_08516", "split": "train", "clip_key": "2020-0214-145407_007287_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "007287"}, "frames": ["2020-0214-145407_007287_movie_t-3.jpg", "2020-0214-145407_007287_movie_t-2.jpg", "2020-0214-145407_007287_movie_t-1.jpg", "2020-0214-145407_007287_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane roadway with smooth pavement and no median runs beneath an elevated structure, and traffic is light to moderate as vehicles queue near an intersection ahead. A white van ahead in the ego lane is stopped at the stop line because the signal at the intersection shows red, constraining the ego vehicle's pace. In the adjacent right lane, several cars continue slowly toward the same junction but remain in their lane and do not enter the ego path. A dark sedan is parked along the left curb, stationary outside the travel lane. The overhead traffic signal displays red for the ego approach, and construction-wrapped materials sit on the right shoulder near a pole.", "hazard_reasoning": "There is a white van stopped in the ego lane because of the red traffic light ahead at the intersection. The driver should stop to maintain a safe distance and comply with the red light, preventing a collision with the halted vehicle."}
{"id": "train_08517", "split": "train", "clip_key": "titan_clip_176_000036_movie", "source": {"subset": "titan", "scenario": "clip_176", "frame": "000036"}, "frames": ["titan_clip_176_000036_movie_t-3.jpg", "titan_clip_176_000036_movie_t-2.jpg", "titan_clip_176_000036_movie_t-1.jpg", "titan_clip_176_000036_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop and wait for the pedestrian.", "environment_perception": "An urban undivided two-way street with one lane each direction approaches a zebra crosswalk between mid-rise buildings; the pavement looks clean and traffic is light. Ahead in the ego lane, a white box truck continues straight through the intersection at modest speed, loosely setting the pace. On the right side, a woman carrying an umbrella and wearing a black skirt walks from the sidewalk toward the crosswalk toward the ego car and may enter the ego lane. On the left corner, a pedestrian stands near the curb by the crosswalk, waiting to cross. A silver van is parked along the oncoming curb just beyond the crosswalk.", "hazard_reasoning": "There is a woman carrying an umbrella, wearing a black skirt, and walking on the right side of the road to the crosswalk, towards the ego car. The driver should stop because the pedestrian is about to enter the intersection and could cross the vehicle's path."}
{"id": "train_08518", "split": "train", "clip_key": "2020-0204-150838_004853_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "004853"}, "frames": ["2020-0204-150838_004853_movie_t-3.jpg", "2020-0204-150838_004853_movie_t-2.jpg", "2020-0204-150838_004853_movie_t-1.jpg", "2020-0204-150838_004853_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with dry asphalt and no physical median carries heavy, slow traffic toward a signalized intersection ahead. A black sedan directly ahead in the ego lane slows due to congestion and constrains the ego car's pace. Slightly ahead to the left, a large box truck creeps in the curbside lane alongside the ego lane, leaving little space to pass on that side. In the adjacent right lane, a black minivan a short distance ahead also slows with the queue, limiting options to merge right.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to adapt to the congestion and maintain a safe following distance."}
{"id": "train_08519", "split": "train", "clip_key": "titan_clip_297_000042_movie", "source": {"subset": "titan", "scenario": "clip_297", "frame": "000042"}, "frames": ["titan_clip_297_000042_movie_t-3.jpg", "titan_clip_297_000042_movie_t-2.jpg", "titan_clip_297_000042_movie_t-1.jpg", "titan_clip_297_000042_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the parked van.", "environment_perception": "A narrow urban two-way street lined with close buildings runs straight with no centerline or median; the asphalt looks slightly worn, and traffic is light with no moving vehicles nearby. On the left edge near the foreground, a white van is parked and juts slightly into the travel lane, constraining the ego vehicle's path. No oncoming traffic or signals are visible, and bicycles and shop fixtures line the curbs as static obstacles.", "hazard_reasoning": "There is a white van parked on the left side of the road. It may reduce available lane width and require you to adjust your path to maintain safe clearance."}
{"id": "train_08520", "split": "train", "clip_key": "2020-0214-145407_050243_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "050243"}, "frames": ["2020-0214-145407_050243_movie_t-3.jpg", "2020-0214-145407_050243_movie_t-2.jpg", "2020-0214-145407_050243_movie_t-1.jpg", "2020-0214-145407_050243_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial under an elevated structure approaches a broad signalized intersection; the pavement is clean and dry, and traffic is light to moderate with vehicles queued. A black sedan directly ahead in the ego lane is stopped at the line because the light facing us is red, holding the ego vehicle. To the left, a red taxi in an adjacent same-direction lane also waits, limiting any advance on that side. A motorcyclist on the cross street rides rightward through the intersection while our approach remains halted, crossing the path that will open to us when the signal changes.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of a red traffic light. The driver must stop to avoid a collision with the stopped vehicle under the red signal."}
{"id": "train_08521", "split": "train", "clip_key": "2020-0220-102630_040228_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "040228"}, "frames": ["2020-0220-102630_040228_movie_t-3.jpg", "2020-0220-102630_040228_movie_t-2.jpg", "2020-0220-102630_040228_movie_t-1.jpg", "2020-0220-102630_040228_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene shows a signalized intersection beneath an elevated railway near Ueno Station, with smooth pavement and multi-lane markings curving right under the bridge; traffic is moderate with a short queue. A black van ahead in the ego lane drives away under the bridge, setting the pace for the approach. Two covered trucks just ahead to the right move slowly near the stop line and shape the flow in the adjacent lane. Pedestrians and a cyclist on the left by the station walk along the sidewalk and pause near the crosswalk while remaining clear of the ego lane.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car. The van may brake suddenly or slow unexpectedly, so the driver should follow the vehicle ahead to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_08522", "split": "train", "clip_key": "2020-0218-103119_010831_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "010831"}, "frames": ["2020-0218-103119_010831_movie_t-3.jpg", "2020-0218-103119_010831_movie_t-2.jpg", "2020-0218-103119_010831_movie_t-1.jpg", "2020-0218-103119_010831_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street approaches a signalized intersection, with a single narrow lane in the ego direction, no median, smooth pavement, and light traffic. A green-painted bicycle strip runs along the left curb. A white box truck ahead in the ego lane is stopped at the red light, holding the ego vehicle. Pedestrians wait at the far-right corner by the crosswalk and may enter when the signal changes. Several bicycles are parked along the right curb but do not intrude into the roadway.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, because of the red traffic light. The driver should stop to maintain a safe distance and avoid a collision."}
{"id": "train_08523", "split": "train", "clip_key": "2020-0206-101736_088502_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "088502"}, "frames": ["2020-0206-101736_088502_movie_t-3.jpg", "2020-0206-101736_088502_movie_t-2.jpg", "2020-0206-101736_088502_movie_t-1.jpg", "2020-0206-101736_088502_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided boulevard with two lanes in each direction and a raised planted median stretches ahead; the pavement looks sound and the crosswalk slips under the camera as traffic moves steadily. A silver hatchback ahead in the ego lane cruises at a constant pace, keeping the gap. Farther ahead in the same lane, a white truck drives away from the ego car as the smooth flow lets it widen the distance. In the adjacent right lane, a white sedan advances slightly quicker in the same direction without merging. The opposite carriageway beyond the median carries no interacting traffic.", "hazard_reasoning": "There is a white truck driving away from the ego car, in front of the ego car, in the ego lane, because traffic is smooth. The white truck ahead may reduce speed unexpectedly, so slowing down will maintain a safe following distance."}
{"id": "train_08524", "split": "train", "clip_key": "titan_clip_643_000564_movie", "source": {"subset": "titan", "scenario": "clip_643", "frame": "000564"}, "frames": ["titan_clip_643_000564_movie_t-3.jpg", "titan_clip_643_000564_movie_t-2.jpg", "titan_clip_643_000564_movie_t-1.jpg", "titan_clip_643_000564_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street has one narrow lane per direction, no median, smooth pavement, and light traffic. On the immediate left, a white minivan is parked at the curb being unloaded, slightly intruding into the ego lane and tightening the passage. Next to it, a person stands at the van's open sliding door with part of the body in the roadway, directly in the near-side lane. Far ahead in the same direction, a small blue vehicle moves away along the center of the lane and does not constrain the ego vehicle. A 20 speed-limit sign is posted on a pole to the right, and temporary construction fencing lines the left sidewalk.", "hazard_reasoning": "There is a white minivan parked on the left side of the road because it is being unloaded. The driver should carefully manoeuvre around the minivan to avoid colliding with the vehicle or endangering unloading personnel."}
{"id": "train_08525", "split": "train", "clip_key": "titan_clip_48_000252_movie", "source": {"subset": "titan", "scenario": "clip_48", "frame": "000252"}, "frames": ["titan_clip_48_000252_movie_t-3.jpg", "titan_clip_48_000252_movie_t-2.jpg", "titan_clip_48_000252_movie_t-1.jpg", "titan_clip_48_000252_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A quiet urban two-way street with one narrow lane in each direction runs between buildings, with smooth asphalt and bollards separating sidewalks; traffic is light and steady. A white van is far ahead in the ego lane traveling away downhill and stays distant. On the right edge of the roadway near the curb, a female pedestrian in a blue shirt pushes a stroller toward the ego-vehicle as she goes around other pedestrians on the sidewalk, briefly using the street and possibly encroaching on the ego path. A small group of pedestrians on the right sidewalk walks close to the curb, forming the pinch point the stroller user navigates.", "hazard_reasoning": "There is a female pedestrian wearing a blue shirt, and pushing a stroller, walking on the right side of the street towards the ego-car, because she is moving around other pedestrians on the sidewalk. The driver should carefully manoeuvre to avoid colliding with her as she may unexpectedly step into the roadway while navigating around others."}
{"id": "train_08526", "split": "train", "clip_key": "2020-0131-103016_014745_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "014745"}, "frames": ["2020-0131-103016_014745_movie_t-3.jpg", "2020-0131-103016_014745_movie_t-2.jpg", "2020-0131-103016_014745_movie_t-1.jpg", "2020-0131-103016_014745_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes and smooth asphalt runs between tall buildings, and traffic is heavy and queued at an intersection. Overhead signals show red, so movement is minimal. In the ego lane, a silver mid-SUV is stationary directly ahead, holding the ego vehicle because of the red light. In the left lane, a beige sedan sits slightly forward while a small truck farther ahead waits in the line, limiting any lane change to the left. On the right, a dark sedan eases up alongside and comes to a stop in the right lane near the crosswalk, also waiting for the signal. Pedestrians are visible along the sidewalks near the junction.", "hazard_reasoning": "There is a silver mid-suv stopped in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to avoid rear-ending the stopped vehicle and comply with the traffic signal."}
{"id": "train_08527", "split": "train", "clip_key": "titan_clip_58_000294_movie", "source": {"subset": "titan", "scenario": "clip_58", "frame": "000294"}, "frames": ["titan_clip_58_000294_movie_t-3.jpg", "titan_clip_58_000294_movie_t-2.jpg", "titan_clip_58_000294_movie_t-1.jpg", "titan_clip_58_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban neighborhood street with tightly spaced buildings has a single shared lane and no median, and the pavement is smooth and dry; there is no visible vehicular traffic, so flow is light. In the center ahead, a pedestrian in a blue shirt carrying a handbag walks away in the middle of the lane, directly in the ego vehicle's path and constraining its pace. Farther ahead near the center-left, a person with a bicycle walks along the roadway in the same direction, remaining within the travel lane and occupying space ahead. A small group of pedestrians even farther ahead near the road center also walk away along the lane, reducing the clear path forward.", "hazard_reasoning": "A pedestrian in a blue shirt and handbag is walking in the middle of the road, away from the ego car. This pedestrian's position in the middle of the lane increases collision risk if the vehicle maintains speed, so slow down to maintain control and avoid impact."}
{"id": "train_08528", "split": "train", "clip_key": "titan_clip_488_000258_movie", "source": {"subset": "titan", "scenario": "clip_488", "frame": "000258"}, "frames": ["titan_clip_488_000258_movie_t-3.jpg", "titan_clip_488_000258_movie_t-2.jpg", "titan_clip_488_000258_movie_t-1.jpg", "titan_clip_488_000258_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with a single lane and no median runs between tall buildings; the asphalt is smooth and traffic is light with no other moving vehicles. Temporary construction barriers line the left edge and a parked black car further reduces width. Ahead on the right, a woman wearing a black shirt and a patterned skirt walks away along the road edge, close to the curb and near the ego path. Mid-left, a man stands beside the parked car at the construction frontage, lingering near the lane. Farther ahead near the center-left, another pedestrian walks away by a parking entrance, aligning with the lane and constraining the ego vehicle's pace. A bicycle rests against the right wall outside the travel path.", "hazard_reasoning": "There is a woman wearing a black shirt and a patterned skirt and walking on the right side of the road, away from the ego car. Because she is walking near the vehicle's path, the driver should slow down to avoid a potential collision."}
{"id": "train_08529", "split": "train", "clip_key": "2020-0214-145407_066549_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "066549"}, "frames": ["2020-0214-145407_066549_movie_t-3.jpg", "2020-0214-145407_066549_movie_t-2.jpg", "2020-0214-145407_066549_movie_t-1.jpg", "2020-0214-145407_066549_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two same-direction lanes runs between mid- and high-rise buildings, separated from oncoming traffic by a low shrub median with a fence; the pavement looks smooth and traffic is heavy with intermittent slowdowns. A white sedan directly ahead in the ego lane slows due to congestion ahead, constraining our pace. To the left, a black minivan in the adjacent lane travels alongside and gradually edges ahead with the flow. Farther ahead in the same lane, a white van also decelerates in the queue, further limiting speed and spacing. Overhead gantry signs with straight arrows indicate lanes continue forward.", "hazard_reasoning": "There is a white sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a potential collision with the decelerating vehicle."}
{"id": "train_08530", "split": "train", "clip_key": "2020-0228-102841_074143_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "074143"}, "frames": ["2020-0228-102841_074143_movie_t-3.jpg", "2020-0228-102841_074143_movie_t-2.jpg", "2020-0228-102841_074143_movie_t-1.jpg", "2020-0228-102841_074143_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes shows smooth pavement and moderate-to-heavy but moving traffic beneath an elevated roadway. A white van directly ahead in the ego lane accelerates away as the signal ahead is green, creating growing headway. To the right, a white box truck travels slightly ahead in the adjacent lane at a similar pace, occupying the space beside the ego vehicle and limiting a rightward merge. In the left lane, a black SUV a short distance ahead continues straight with traffic and holds its lane. Other vehicles proceed forward in their lanes, and no oncoming traffic or obstacles are visible.", "hazard_reasoning": "There is a white van accelerating away from the ego car, in the ego lane, because the traffic light is green. The driver needs to start moving now to safely proceed through the intersection while the light is green."}
{"id": "train_08531", "split": "train", "clip_key": "2020-0203-154554_069967_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "069967"}, "frames": ["2020-0203-154554_069967_movie_t-3.jpg", "2020-0203-154554_069967_movie_t-2.jpg", "2020-0203-154554_069967_movie_t-1.jpg", "2020-0203-154554_069967_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two lanes in each direction and no physical median is seen under dry pavement, and traffic in the ego's direction is slow and bunching. Directly ahead in the ego lane, a black motorcycle is stopped, waiting because congestion blocks the lane. Immediately in front of it, a red car in the same lane is stopped or creeping, constraining both the motorcycle and the ego vehicle. In the opposite direction to the right, several cars, including a white wagon, proceed steadily in their oncoming lanes without interacting with the ego.", "hazard_reasoning": "There is a black motorcycle stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid rear-ending the halted motorcycle in the traffic queue."}
{"id": "train_08532", "split": "train", "clip_key": "titan_clip_657_000096_movie", "source": {"subset": "titan", "scenario": "clip_657", "frame": "000096"}, "frames": ["titan_clip_657_000096_movie_t-3.jpg", "titan_clip_657_000096_movie_t-2.jpg", "titan_clip_657_000096_movie_t-1.jpg", "titan_clip_657_000096_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "A narrow urban side street without a centerline runs between tall buildings; the pavement is smooth and traffic is light as the ego vehicle proceeds slowly through a tight corridor. A gray truck is parked on the right with its rear door open as it is being unloaded, protruding into the lane and constraining the ego vehicle's path. Two pedestrians ahead slightly right of center walk away along the roadway toward the truck, potentially entering the ego lane as they navigate around it. The oncoming side has no moving vehicles visible, and orange cones line the left sidewalk.", "hazard_reasoning": "There is a gray truck parked on the right side of the road, because it is being unloaded. It blocks visibility ahead and creates a blind spot, so the driver should manoeuvre carefully around it."}
{"id": "train_08533", "split": "train", "clip_key": "titan_clip_696_000390_movie", "source": {"subset": "titan", "scenario": "clip_696", "frame": "000390"}, "frames": ["titan_clip_696_000390_movie_t-3.jpg", "titan_clip_696_000390_movie_t-2.jpg", "titan_clip_696_000390_movie_t-1.jpg", "titan_clip_696_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "A narrow urban alley with a single shared lane and no marked centerline has smooth pavement and light, slow traffic. Buildings tightly flank the road, leaving limited clearance. A small white van is stopped ahead in the center of the lane, constraining the ego vehicle's path. On the right edge ahead, a pedestrian wearing a black shirt and beige pants walks toward the ego along the roadway where there is no sidewalk, keeping close to the travel lane. Another pedestrian in a white top also walks toward the ego near the van on the same side, further tightening the passage. Planters on the left and short posts with chains on the right constrict the roadway; no notable traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and beige pants, walking on the right side of the road towards the ego car, because there is no sidewalk. The driver should be aware of the pedestrian's presence on the roadway to avoid a potential collision."}
{"id": "train_08534", "split": "train", "clip_key": "2020-0226-140503_045380_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "045380"}, "frames": ["2020-0226-140503_045380_movie_t-3.jpg", "2020-0226-140503_045380_movie_t-2.jpg", "2020-0226-140503_045380_movie_t-1.jpg", "2020-0226-140503_045380_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A busy urban arterial with two same-direction lanes runs on wet pavement, divided from oncoming lanes to the right by a railed median; traffic is heavy and queues toward a signalized intersection. A black-and-white police sedan is stopped immediately ahead in the ego lane because the traffic light up the road is red, holding the ego vehicle. Farther ahead in the same lane, a white SUV waits in the line, pacing the queue. In the oncoming lanes beyond the median to the right, a small truck approaches steadily through its green, remaining separated from the ego path.", "hazard_reasoning": "There is a white sedan stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to avoid a rear-end collision."}
{"id": "train_08535", "split": "train", "clip_key": "titan_clip_828_000096_movie", "source": {"subset": "titan", "scenario": "clip_828", "frame": "000096"}, "frames": ["titan_clip_828_000096_movie_t-3.jpg", "titan_clip_828_000096_movie_t-2.jpg", "titan_clip_828_000096_movie_t-1.jpg", "titan_clip_828_000096_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban neighborhood street with shops lines a narrow two-way roadway lacking a centerline; pavement is dry and smooth, and motor traffic is light. A pedestrian in shorts carrying a handbag walks along the right edge away from the ego car, remaining near the curb but potentially drifting into the lane. Another person on the right pulls a rolling suitcase away from the ego vehicle along the edge, moving slowly and partly in the carriageway, which limits passing space. Farther ahead in the center of the lane, a pedestrian walks away in the roadway, constraining the ego car's pace. An oncoming cyclist approaches near the middle of the road, likely to pass close to the ego path. Scooters are parked along the left curb and bicycles are stacked at the right storefront.", "hazard_reasoning": "There is a pedestrian wearing shorts and a handbag, walking along the right side of the road, away from the ego car. The pedestrian could suddenly step into the driving lane, so the driver should slow down to maintain safety."}
{"id": "train_08536", "split": "train", "clip_key": "2020-0214-102601_086327_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "086327"}, "frames": ["2020-0214-102601_086327_movie_t-3.jpg", "2020-0214-102601_086327_movie_t-2.jpg", "2020-0214-102601_086327_movie_t-1.jpg", "2020-0214-102601_086327_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with a solid centerline and dry, slightly worn pavement runs through a shop-lined street, and traffic is moderate and slow. A black sedan directly ahead in the ego lane slows as a short queue forms ahead, constraining our pace, consistent with congestion further up the road. Farther ahead in the same direction, several vehicles move slowly in line and keep the lane occupied. In the oncoming lane, a white van approaches at low speed while staying within its lane. A do-not-enter sign is posted at a right-side side street.", "hazard_reasoning": "There is a black sedan in the ego-car lane that is slowing down, because there is traffic congestion ahead. The black sedan's deceleration signals approaching congestion, so you should reduce speed to keep a safe distance."}
{"id": "train_08537", "split": "train", "clip_key": "2020-0221-115122_031676_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "031676"}, "frames": ["2020-0221-115122_031676_movie_t-3.jpg", "2020-0221-115122_031676_movie_t-2.jpg", "2020-0221-115122_031676_movie_t-1.jpg", "2020-0221-115122_031676_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging sedan ahead", "environment_perception": "An urban multilane arterial runs under an elevated expressway, with three same-direction lanes, a right-side guardrail, and dry pavement; traffic is heavy and slow. A black sedan directly ahead of the ego car in the center lane signals and shifts right into the adjacent lane to get around the congestion, briefly encroaching on the ego vehicle's path. A dark SUV slightly ahead in the right lane slows in the queue, tightening the gap as the sedan merges and effectively setting the pace for the ego car. Farther ahead, several white vans and cars crawl along in the center and left lanes, maintaining the backlog. The viaduct columns and railings line the roadside but do not obstruct the lanes.", "hazard_reasoning": "There is a black Sedan in front of the ego car that is changing to the right lane, because of traffic congestion. The driver should be aware of this merging maneuver since it may cut in unexpectedly."}
{"id": "train_08538", "split": "train", "clip_key": "2020-0210-155354_004307_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "004307"}, "frames": ["2020-0210-155354_004307_movie_t-3.jpg", "2020-0210-155354_004307_movie_t-2.jpg", "2020-0210-155354_004307_movie_t-1.jpg", "2020-0210-155354_004307_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the traffic cone.", "environment_perception": "An urban commercial street with a narrow two-way carriageway approaches a railway underpass; the pavement is dry and traffic moves slowly in a short queue. A white SUV directly ahead in the ego lane creeps and pauses, constraining the pace toward the bridge. On the left edge beside the ego lane, a red traffic cone blocks part of the lane and a black van is stopped at the curb, together narrowing the passage. On the right side, a cyclist rides forward near the curb in the same direction, traveling alongside the queue and close to the ego lane. Pedestrians line both sidewalks near shopfronts. A no-parking sign and underpass height markings are visible.", "hazard_reasoning": "There's a red traffic cone blocking the lane on the left of the ego-car. The cone indicates a lane obstruction and the driver should be cautious to avoid lane deviation or sudden maneuvers."}
{"id": "train_08539", "split": "train", "clip_key": "titan_clip_1125_000360_movie", "source": {"subset": "titan", "scenario": "clip_1125", "frame": "000360"}, "frames": ["titan_clip_1125_000360_movie_t-3.jpg", "titan_clip_1125_000360_movie_t-2.jpg", "titan_clip_1125_000360_movie_t-1.jpg", "titan_clip_1125_000360_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the blue van", "environment_perception": "An urban two-way road crosses a narrow bridge with no median and worn but dry pavement, and traffic is light with no oncoming vehicles visible. Ahead along the left curb, a blue van is parked, tightening the usable width of the ego lane. On the right edge beside the bridge rail, two pedestrians handle a small handcart and walk forward close to the roadway, making their proximity to the lane relevant. Farther ahead near the center, another pedestrian walks left to right across the road and briefly occupies the path ahead. A roadside convex mirror stands at the left corner.", "hazard_reasoning": "There is a blue van parked on the left side of road. The parked van narrows the available driving lane and could cause a collision if not avoided, so the driver should manoeuvre carefully around the blue van."}
{"id": "train_08540", "split": "train", "clip_key": "titan_clip_1072_000186_movie", "source": {"subset": "titan", "scenario": "clip_1072", "frame": "000186"}, "frames": ["titan_clip_1072_000186_movie_t-3.jpg", "titan_clip_1072_000186_movie_t-2.jpg", "titan_clip_1072_000186_movie_t-1.jpg", "titan_clip_1072_000186_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "A narrow urban two-way street with smooth pavement and red-painted edge strips runs between buildings on the left and trees on the right; traffic is light throughout. A white van is parked ahead in the ego lane on the left side while being unloaded, partly blocking the lane and constraining the ego vehicle's progress. A man stands and moves around the rear of the van at the left edge, close to the travel path as he handles the unloading. Farther ahead, a pedestrian in dark clothing walks away near the middle-right of the road, occupying part of the available space in the oncoming side. Orange cones by the building further squeeze the clearance, and no oncoming vehicles appear.", "hazard_reasoning": "There is a white van parked, on the left side of the road, in the ego lane, because it is being unloaded. The unloading activity and cones partially block the lane and pedestrians are nearby, so the driver should carefully manoeuvre to avoid collision with the van, cones, or pedestrians."}
{"id": "train_08541", "split": "train", "clip_key": "2020-0220-102630_065464_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "065464"}, "frames": ["2020-0220-102630_065464_movie_t-3.jpg", "2020-0220-102630_065464_movie_t-2.jpg", "2020-0220-102630_065464_movie_t-1.jpg", "2020-0220-102630_065464_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "be aware of its lane change", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection, with at least three lanes in the ego direction and a median island to the right; the pavement is smooth and traffic is moderate and steady. Ahead, a white hatchback in front of the ego car changes lanes from the ego lane to the right lane. Farther left, a small box truck ahead in the left lane proceeds slowly toward the intersection. In the right lane ahead, a silver minivan continues straight while maintaining its lane. Overhead traffic lights span the junction, and no obstacles or work zones are visible.", "hazard_reasoning": "There is a white hatchback changing lanes in front of the ego car, from the ego lane to the right lane. The driver should be aware of this lane change to anticipate potential sudden maneuvers and maintain a safe following distance."}
{"id": "train_08542", "split": "train", "clip_key": "titan_clip_471_000210_movie", "source": {"subset": "titan", "scenario": "clip_471", "frame": "000210"}, "frames": ["titan_clip_471_000210_movie_t-3.jpg", "titan_clip_471_000210_movie_t-2.jpg", "titan_clip_471_000210_movie_t-1.jpg", "titan_clip_471_000210_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban shopping street with a single shared lane has no centerline or median, block-paved surface, and very light vehicular flow amid many pedestrians. A man wearing a black shirt and black pants walks along the right edge toward the ego vehicle where the roadside lacks a sidewalk, so he approaches the ego path. On the left side ahead, a small group of pedestrians moves toward the camera at the curb and intermittently drifts into the lane, narrowing clearance. Farther ahead in the same lane, a white van proceeds slowly away near the center and partially obscures the view down the street.", "hazard_reasoning": "There is a man wearing a black shirt and black pants, walking on the right side of the road and towards the ego car, because of lack of sidewalk. The pedestrian is moving into the vehicle's path, so the driver should stop to prevent a collision."}
{"id": "train_08543", "split": "train", "clip_key": "titan_clip_1044_000414_movie", "source": {"subset": "titan", "scenario": "clip_1044", "frame": "000414"}, "frames": ["titan_clip_1044_000414_movie_t-3.jpg", "titan_clip_1044_000414_movie_t-2.jpg", "titan_clip_1044_000414_movie_t-1.jpg", "titan_clip_1044_000414_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cyclist", "environment_perception": "A narrow urban two-way street with single lanes and no median runs between shops; the asphalt is worn and traffic is light, with parked vehicles along both curbs narrowing the roadway. A silver microvan is stopped ahead at the left curb in the ego lane, reducing space to pass. Two pedestrians farther ahead near the right storefront walk toward the center, crossing and potentially entering the ego lane. A cyclist in a white shirt rides toward the ego along the right side in the oncoming direction, sharing the road because there is no bicycle lane. No prominent traffic signals are visible.", "hazard_reasoning": "There is a cyclist wearing a white shirt, cycling on the right side of the road towards the ego car, because there is no bicycle lane. The cyclist may move unpredictably into the vehicle's lane without a designated bike path, so the driver should carefully manoeuvre around them."}
{"id": "train_08544", "split": "train", "clip_key": "titan_clip_1295_000594_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1295_000594_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1295_000594_movie_t-3_augB1.jpg", "titan_clip_1295_000594_movie_t-2_augB1.jpg", "titan_clip_1295_000594_movie_t-1_augB1.jpg", "titan_clip_1295_000594_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban multi-lane arterial runs under elevated structures, with three same-direction lanes, smooth asphalt, and moderate traffic moving steadily. On the far left ahead, a delivery truck is stopped at the curb with its rear open and partly intruding into the left lane; a man in a blue shirt and brown pants stands beside it unloading the truck, with boxes set on the pavement, so that edge of the lane is constrained. In the adjacent right lane slightly ahead, a white SUV travels straight at a similar pace to the ego-vehicle. Farther ahead, a line of cars continues straight toward the underpass, setting the overall flow.", "hazard_reasoning": "There is a man wearing a blue shirt and brown pants and standing on the left side of the road, because he is unloading a truck. A pedestrian unloading a truck at the roadside may step into traffic unexpectedly, requiring the driver to adjust their path to avoid a collision."}
{"id": "train_08545", "split": "train", "clip_key": "titan_clip_165_000168_movie", "source": {"subset": "titan", "scenario": "clip_165", "frame": "000168"}, "frames": ["titan_clip_165_000168_movie_t-3.jpg", "titan_clip_165_000168_movie_t-2.jpg", "titan_clip_165_000168_movie_t-1.jpg", "titan_clip_165_000168_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban street with a single mixed-traffic lane and a zebra crossing runs between mid-rise buildings; the pavement is smooth and traffic is light. In front, a cyclist with a handbag crosses from the right at the crosswalk toward the left side of the road, briefly occupying the ego lane. Farther ahead in the same direction, another cyclist rides away along the center of the lane, occupying the path ahead. On the oncoming side at the right edge near the crosswalk, a cyclist approaches toward the camera along the curb and continues past. A pedestrian crossing sign stands beside the crosswalk.", "hazard_reasoning": "There is a cyclist with a handbag in front of the ego car, crossing to the left side of the road. The cyclist is moving into the vehicle's path, so the driver must stop to avoid a collision."}
{"id": "train_08546", "split": "train", "clip_key": "2020-0220-151845_055261_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "055261"}, "frames": ["2020-0220-151845_055261_movie_t-3.jpg", "2020-0220-151845_055261_movie_t-2.jpg", "2020-0220-151845_055261_movie_t-1.jpg", "2020-0220-151845_055261_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, bordered by a concrete wall on the left; the pavement looks dry and traffic in the same direction is heavy and slow. A pink flatbed truck with a yellow-tarped load is stopped directly ahead in the ego lane because congestion extends forward, blocking the ego car's path. To the right, a silver minivan in the adjacent same-direction lane creeps ahead in the queue slightly in front of the ego vehicle. Farther right, a black sedan also queues and advances slowly alongside. Blue overhead direction signs and a pedestrian overpass are visible above.", "hazard_reasoning": "There is a pink truck stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a collision with the stopped vehicle ahead due to congestion."}
{"id": "train_08547", "split": "train", "clip_key": "2020-0204-150838_073354_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "073354"}, "frames": ["2020-0204-150838_073354_movie_t-3.jpg", "2020-0204-150838_073354_movie_t-2.jpg", "2020-0204-150838_073354_movie_t-1.jpg", "2020-0204-150838_073354_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban expressway with two lanes in the same direction and concrete side barriers stretches ahead under overcast skies; the pavement looks smooth and dry and traffic is light. The road curves gently right with no oncoming traffic visible on this divided roadway. A black truck travels ahead in the ego lane, centered and gradually pulling away, serving as the immediate lead vehicle without constraining the pace. No other vehicles are close by, and no notable signs or signals appear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08548", "split": "train", "clip_key": "2020-0207-101955_011888_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "011888"}, "frames": ["2020-0207-101955_011888_movie_t-3.jpg", "2020-0207-101955_011888_movie_t-2.jpg", "2020-0207-101955_011888_movie_t-1.jpg", "2020-0207-101955_011888_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane divided road lined with high-rise buildings has smooth pavement and moderate, steady traffic flow. Directly ahead in the ego lane, a gray covered truck accelerates away, widening the gap. To the right, a green city bus in the adjacent lane travels alongside beyond a hatched buffer, limiting a rightward lane change. Ahead to the left, a black minivan proceeds in the adjacent lane on red pavement at a similar pace, remaining near the truck's flank.", "hazard_reasoning": "There is a gray truck accelerating in front of the ego car, in the ego lane, away from the ego car. The truck's sudden acceleration can change the following distance rapidly, so the driver should start moving to maintain a safe gap and avoid a potential collision."}
{"id": "train_08549", "split": "train", "clip_key": "2020-0227-104226_108066_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "108066"}, "frames": ["2020-0227-104226_108066_movie_t-3.jpg", "2020-0227-104226_108066_movie_t-2.jpg", "2020-0227-104226_108066_movie_t-1.jpg", "2020-0227-104226_108066_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with two same-direction lanes and painted dividers carries heavy, slow traffic on smooth pavement. A white box truck is stopped directly ahead in the ego left lane, blocking the path and forcing the ego car to queue behind. To the right, a silver hatchback moves slowly forward in the adjacent lane, passing the stopped truck and limiting room for a lane change. Farther ahead in that right lane, a dark car also continues straight at low speed, keeping the flow tight. A pedestrian overpass spans the road ahead.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego car. The driver should stop to avoid colliding with the stationary truck ahead."}
{"id": "train_08550", "split": "train", "clip_key": "2020-0129-105040_026909_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "026909"}, "frames": ["2020-0129-105040_026909_movie_t-3.jpg", "2020-0129-105040_026909_movie_t-2.jpg", "2020-0129-105040_026909_movie_t-1.jpg", "2020-0129-105040_026909_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial under elevated structures has three same-direction lanes, a hedge and guardrail at the left edge, and dry pavement; traffic is heavy and queuing at an intersection. A yellow sedan directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. To the right, a white van slightly ahead in the adjacent lane waits in the queue alongside, remaining in its lane. In the left lane ahead, a dark minivan also waits, contributing to the jam. The overhead traffic signal shows red.", "hazard_reasoning": "There is a yellow sedan stopped in front of the ego car in the ego lane, because of a red traffic light. The driver should stop to avoid colliding with the halted sedan and comply with the traffic signal."}
{"id": "train_08551", "split": "train", "clip_key": "2020-0131-135401_073539_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "073539"}, "frames": ["2020-0131-135401_073539_movie_t-3.jpg", "2020-0131-135401_073539_movie_t-2.jpg", "2020-0131-135401_073539_movie_t-1.jpg", "2020-0131-135401_073539_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with three same-direction lanes runs between midrise buildings; the asphalt is smooth, no median is visible, and traffic is heavy and mostly stopped. Directly ahead in the ego lane, a black hatchback is stopped in a queue due to congestion, forcing the ego vehicle to wait. In the left lane just ahead, a white box truck remains stopped, blocking forward view and contributing to the slow pace. To the right, a gray van alongside creeps and then halts in its lane, keeping close parallel to the ego and limiting lateral space. An overhead gantry displays lane-use arrows showing a left-turn lane, two through lanes, and a right-turn option on the right.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car due to traffic congestion. Since the hatchback is stopped ahead, you should stop to avoid a rear-end collision."}
{"id": "train_08552", "split": "train", "clip_key": "2020-0218-151547_013738_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "013738"}, "frames": ["2020-0218-151547_013738_movie_t-3.jpg", "2020-0218-151547_013738_movie_t-2.jpg", "2020-0218-151547_013738_movie_t-1.jpg", "2020-0218-151547_013738_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial approaches a wide signalized intersection, the pavement dry and smooth, with heavy traffic queued under bright glare. A white hatchback directly ahead in the ego lane is stopped for the red signal, holding the ego vehicle. To the left, a scooter rider waits in the adjacent lane near the crosswalk, slightly ahead of the hatchback but stationary. A large coach bus is alongside in the lane to the right, also stopped and close to the ego car. A pedestrian walks rightward across the crosswalk in front of the waiting vehicles.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid risking a collision at the red light and maintain a safe gap behind the halted vehicle."}
{"id": "train_08553", "split": "train", "clip_key": "titan_clip_1246_000456_movie", "source": {"subset": "titan", "scenario": "clip_1246", "frame": "000456"}, "frames": ["titan_clip_1246_000456_movie_t-3.jpg", "titan_clip_1246_000456_movie_t-2.jpg", "titan_clip_1246_000456_movie_t-1.jpg", "titan_clip_1246_000456_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban alley-like single-lane road with red-and-white railings on the right and shopfronts on the left extends ahead; the asphalt is worn but intact, and there is no moving vehicular traffic. On the right side of the road, a pedestrian in a black T-shirt walks toward the ego car along the edge and encroaches toward the lane, potentially constraining the vehicle's pace. Farther ahead within the railed walkway on the right, two pedestrians walk away from the camera and remain clear of the lane. Parked bicycles behind the right-hand railing and shop clutter at the left storefront narrow the margins but do not block the path.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt walking toward the ego car, on the right side of the road. The driver should slow down to avoid a potential collision as the pedestrian may step into the lane unexpectedly."}
{"id": "train_08554", "split": "train", "clip_key": "2020-0204-103442_035856_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "035856"}, "frames": ["2020-0204-103442_035856_movie_t-3.jpg", "2020-0204-103442_035856_movie_t-2.jpg", "2020-0204-103442_035856_movie_t-1.jpg", "2020-0204-103442_035856_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban junction under an elevated roadway carries slow traffic in parallel lanes; the ego car follows a single lane bordered by a left guardrail with red chevron boards on sound pavement. A white box truck ahead in the ego lane slows to a crawl in a queue, constraining the ego car. Ahead right, a blue minivan moves slowly in the adjacent lane parallel to the ego path. To the immediate right, a silver hatchback creeps alongside in the neighboring lane and could merge into the ego lane. Overhead blue direction signs are visible, and the bridge columns and barriers partially limit the view further ahead.", "hazard_reasoning": "There is a white truck slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should slow down to maintain safe distance behind the slowing truck and avoid a collision."}
{"id": "train_08555", "split": "train", "clip_key": "titan_clip_115_000150_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_115_000150_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_115_000150_movie_t-3_augB1.jpg", "titan_clip_115_000150_movie_t-2_augB1.jpg", "titan_clip_115_000150_movie_t-1_augB1.jpg", "titan_clip_115_000150_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to crossing pedestrians", "environment_perception": "An urban street lined with mid-rise buildings forms a narrow two-way road with no median, the ego traveling in the left lane on smooth pavement with light traffic. A small car ahead in the same direction proceeds steadily up the street. Two pedestrians, both wearing white shirts and black pants, cross from the right curb to the left directly in front of the ego path, occupying the lane as they pass. Another pedestrian walks along the right sidewalk near a cafe, staying by the curb. Bicycles are parked along the right curb, and a sidewalk signboard and some cones by a garage entrance sit near the edges but outside the travel lane.", "hazard_reasoning": "There are two pedestrians, both wearing black pants and a white shirt, crossing the street in front of the ego car, from the right side of the street to the left side. The driver should yield to the pedestrians crossing ahead to avoid a collision."}
{"id": "train_08556", "split": "train", "clip_key": "2020-0203-114632_002605_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "002605"}, "frames": ["2020-0203-114632_002605_movie_t-3.jpg", "2020-0203-114632_002605_movie_t-2.jpg", "2020-0203-114632_002605_movie_t-1.jpg", "2020-0203-114632_002605_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the gray van", "environment_perception": "An urban commercial street with one lane in each direction and no median runs straight ahead, bordered by metal railings on both sidewalks; the dry pavement looks smooth and traffic is light. A gray van is parked ahead in the ego lane because of an emergency, blocking the path. An oncoming black SUV travels past in the opposite lane near the center, occupying the gap beside the obstruction. Farther ahead, an oncoming light truck continues straight in its lane, keeping the opposing flow steady. Pedestrians remain on the sidewalks behind the railings and do not approach the roadway.", "hazard_reasoning": "There is a gray van parked in the ego lane, in front of the ego car, because of an emergency. Drivers should manoeuvre around the van to avoid collision and maintain safe travel."}
{"id": "train_08557", "split": "train", "clip_key": "titan_clip_1033_000138_movie", "source": {"subset": "titan", "scenario": "clip_1033", "frame": "000138"}, "frames": ["titan_clip_1033_000138_movie_t-3.jpg", "titan_clip_1033_000138_movie_t-2.jpg", "titan_clip_1033_000138_movie_t-1.jpg", "titan_clip_1033_000138_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow two-way urban residential street with a painted centerline and damp, patched pavement runs through a roadside work zone, and traffic is light as the ego-vehicle proceeds along the left side. Directly ahead in the ego lane, a pedestrian in a work uniform and hard hat stands in the middle using a sprayer due to construction on the right, temporarily blocking the lane. Slightly farther ahead, another worker stands and walks near a small work truck in the center area, constraining the ego-vehicle's pace. On the right edge, a stopped work truck, orange cones, and hoses and tools encroach into the lane and narrow the passage, while no oncoming vehicles appear in view.", "hazard_reasoning": "There is a pedestrian wearing a work uniform and a hard hat, using a sprayer, and standing in the middle of the road, because of construction work on the right. Drivers should carefully manoeuvre around the worker in the roadway to avoid collision due to their unexpected presence on the road."}
{"id": "train_08558", "split": "train", "clip_key": "2020-0220-102630_023084_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "023084"}, "frames": ["2020-0220-102630_023084_movie_t-3.jpg", "2020-0220-102630_023084_movie_t-2.jpg", "2020-0220-102630_023084_movie_t-1.jpg", "2020-0220-102630_023084_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road approaches a signalized intersection with no median; the asphalt looks intact and traffic is heavy with a slow queue. In the ego lane directly ahead, a white box truck slows to a stop at the crosswalk, constraining the ego vehicle's pace. In the adjacent right lanes, a blue car and other same-direction vehicles inch forward alongside the truck in the queue. At the left curb near the stop line, a cyclist waits beside the roadway and may enter the crosswalk ahead of the truck.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The truck's deceleration may require reducing speed to maintain a safe following distance and avoid collision aligned with the warning to slow down."}
{"id": "train_08559", "split": "train", "clip_key": "titan_clip_166_000222_movie", "source": {"subset": "titan", "scenario": "clip_166", "frame": "000222"}, "frames": ["titan_clip_166_000222_movie_t-3.jpg", "titan_clip_166_000222_movie_t-2.jpg", "titan_clip_166_000222_movie_t-1.jpg", "titan_clip_166_000222_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban street lined with tall buildings appears undivided, the pavement is smooth, and traffic is light with no vehicles ahead or oncoming. A pedestrian in a white shirt and black pants walks away from the ego-vehicle along the left side of the lane, near the curb yet close to the travel path. Another person stands on the left sidewalk by a building entrance, waiting and not stepping into the road. A large 30 speed marking is painted on the asphalt. Two orange cones by the right curb slightly narrow the edge but leave the lane clear.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants walking on the left side of the lane, away from the ego car. The driver should carefully manoeuvre around the pedestrian to maintain safe clearance and prevent a collision."}
{"id": "train_08560", "split": "train", "clip_key": "titan_clip_940_000108_movie", "source": {"subset": "titan", "scenario": "clip_940", "frame": "000108"}, "frames": ["titan_clip_940_000108_movie_t-3.jpg", "titan_clip_940_000108_movie_t-2.jpg", "titan_clip_940_000108_movie_t-1.jpg", "titan_clip_940_000108_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down for the cyclist ahead.", "environment_perception": "An urban alley with shops lines a single shared lane with no median; the pavement is smooth and traffic is light. Ahead in the ego lane, a cyclist wearing a white shirt and black pants rides away from the vehicle, directly in front and setting the pace. Farther ahead at the left curb, a white van is stopped, narrowing the passage. Pedestrians on both sides walk along the edges-one close on the left and another on the right-near the travel way and may step into the lane. A sandwich board on the left and boxes with a small ramp on the right protrude slightly into the roadway.", "hazard_reasoning": "There is a cyclist wearing a white shirt and black pants, cycling away from the ego car, in front of the ego car. The cyclist is directly ahead and may change speed or direction unexpectedly, so the driver should slow down to maintain a safe following distance."}
{"id": "train_08561", "split": "train", "clip_key": "titan_clip_1297_000144_movie", "source": {"subset": "titan", "scenario": "clip_1297", "frame": "000144"}, "frames": ["titan_clip_1297_000144_movie_t-3.jpg", "titan_clip_1297_000144_movie_t-2.jpg", "titan_clip_1297_000144_movie_t-1.jpg", "titan_clip_1297_000144_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban two-way street with one narrow lane each way, no median, and a dashed center line; the pavement is freshly patched and traffic moves slowly alongside a construction frontage. A yellow sedan ahead in the ego lane is stopped because of traffic congestion further up the road, constraining the ego-vehicle's pace. On the right, a white truck facing the ego-vehicle stands at the curb in the oncoming lane, occupying part of the carriageway and limiting width for opposing traffic. Two construction workers along the left fence line wait behind cones at the edge of the sidewalk, near the travel lane but outside it. Farther ahead the lane remains clear beyond the sedan, with no immediate oncoming vehicles entering the ego path.", "hazard_reasoning": "There is a yellow sedan stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid collision with the halted vehicle."}
{"id": "train_08562", "split": "train", "clip_key": "2020-0206-101736_044804_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "044804"}, "frames": ["2020-0206-101736_044804_movie_t-3.jpg", "2020-0206-101736_044804_movie_t-2.jpg", "2020-0206-101736_044804_movie_t-1.jpg", "2020-0206-101736_044804_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with multiple lanes carries two-way traffic; the ego car is in the left lane, while red bollards separate the oncoming lanes to the right. Pavement looks dry and smooth, and overall flow is heavy with vehicles queuing under a pedestrian overpass. A white kei van stops directly ahead in the ego lane because of congestion, holding the ego vehicle at a standstill. To the left, a silver microvan in the adjacent same-direction lane creeps forward with the queue, keeping close alongside and limiting lateral room. On the right beyond the bollards, several vans in the opposing lanes move slowly toward the camera but remain clearly divided from the ego path.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to prevent a collision with the halted vehicle ahead."}
{"id": "train_08563", "split": "train", "clip_key": "2020-0228-102841_043116_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "043116"}, "frames": ["2020-0228-102841_043116_movie_t-3.jpg", "2020-0228-102841_043116_movie_t-2.jpg", "2020-0228-102841_043116_movie_t-1.jpg", "2020-0228-102841_043116_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of the white van merging", "environment_perception": "The ego car travels in the left lane of a two-lane urban arterial with a fence median separating opposing traffic; the pavement is dry and traffic is light and steady. Ahead, a small white van moves left from the right lane and cuts into the ego lane, merging in front and constraining the ego vehicle's pace. To the right front, a dark hatchback continues straight in its lane at a similar speed. Farther ahead in the right lane, a dark boxy van proceeds straight. Roadside railings and the central fence limit lateral space.", "hazard_reasoning": "There is a white van in front of the ego car that is cutting in to the ego lane from the right lane. This merging action could reduce your reaction time or require sudden braking, so be cautious of the white van merging."}
{"id": "train_08564", "split": "train", "clip_key": "2020-0220-102630_106169_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "106169"}, "frames": ["2020-0220-102630_106169_movie_t-3.jpg", "2020-0220-102630_106169_movie_t-2.jpg", "2020-0220-102630_106169_movie_t-1.jpg", "2020-0220-102630_106169_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with mid-rise buildings appears, with the ego car in the left lane and a right-turn lane beside it; pavement is smooth and traffic is light. Ahead in the ego lane a silver box truck drives away from the camera, continuing straight and setting the pace as it pulls through the intersection. To the right, an oncoming white van approaches in its own lane and passes by without affecting the ego path. A few parked vehicles line the curb on the right, narrowing the sightline near storefronts.", "hazard_reasoning": "There is a silver truck in the ego lane, driving away from the ego car. Following at a safe distance helps anticipate the truck's speed changes and prevents collisions if it brakes suddenly."}
{"id": "train_08565", "split": "train", "clip_key": "2020-0131-135401_008899_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008899"}, "frames": ["2020-0131-135401_008899_movie_t-3.jpg", "2020-0131-135401_008899_movie_t-2.jpg", "2020-0131-135401_008899_movie_t-1.jpg", "2020-0131-135401_008899_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with narrow lanes runs between midrise buildings, with temporary work?one barriers and machinery narrowing the right side; pavement looks intact and traffic is moderate and slow. A white box truck ahead in the ego lane decelerates as it approaches a short queue, constraining the ego vehicle's pace as described. A small car approaches in the oncoming lane past the work area, continuing steadily without encroaching into the ego lane. Several pedestrians walk along the left sidewalk near the curb, moving parallel to traffic and remaining clear of the roadway. The roadside construction zone on the right includes a parked dump truck and cones that squeeze the lane and add visual clutter.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because there is traffic congestion, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid collision in the congested traffic ahead."}
{"id": "train_08566", "split": "train", "clip_key": "titan_clip_686_000126_movie", "source": {"subset": "titan", "scenario": "clip_686", "frame": "000126"}, "frames": ["titan_clip_686_000126_movie_t-3.jpg", "titan_clip_686_000126_movie_t-2.jpg", "titan_clip_686_000126_movie_t-1.jpg", "titan_clip_686_000126_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "be aware of the squatting pedestrian", "environment_perception": "An urban commercial street with a single narrow two-way lane and clear edge lines shows smooth pavement and light vehicle traffic but many pedestrians. The ego vehicle approaches a cross street where a large stop marking is painted on the road. On the right, a pedestrian wearing a white shirt and gray pants is squatting beside a street stall very close to the roadway, near the ego path. On the left edge near the camera, a man with a backpack walks toward the vehicle partly in the lane, reducing available space. At the distant junction, a white car crosses from left to right on the intersecting street ahead.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and gray pants, and squatting on the right side of the road. The squatting pedestrian may step into the lane unexpectedly, so the driver should be aware of the pedestrian to avoid a collision."}
{"id": "train_08567", "split": "train", "clip_key": "titan_clip_938_000516_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_938_000516_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_938_000516_movie_t-3_augB1.jpg", "titan_clip_938_000516_movie_t-2_augB1.jpg", "titan_clip_938_000516_movie_t-1_augB1.jpg", "titan_clip_938_000516_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around cyclist", "environment_perception": "An urban back street with a very narrow two-way carriageway has smooth pavement and light traffic, with buildings tight to both curbs. Ahead on the right edge, an oncoming cyclist in a white shirt and black pants rides toward the ego vehicle along the opposing side because the lane is narrow, likely passing close to the ego path. On the near right, a pedestrian walks past a vending machine at the curb and moves along the roadway, reducing clearance. A parked car protrudes from the left curb near the ego vehicle, adding to the squeeze.", "hazard_reasoning": "There's a male cyclist, wearing a white shirt and black pants, cycling on the right side of the road, toward the ego car, because it's a narrow lane. Carefully manoeuvre around the cyclist to avoid a collision in the confined space."}
{"id": "train_08568", "split": "train", "clip_key": "2020-0129-105040_090052_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "090052"}, "frames": ["2020-0129-105040_090052_movie_t-3.jpg", "2020-0129-105040_090052_movie_t-2.jpg", "2020-0129-105040_090052_movie_t-1.jpg", "2020-0129-105040_090052_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Be aware of the motorbike", "environment_perception": "A suburban divided road with two lanes in the ego direction and a planted median has smooth pavement and moderate, steady traffic approaching a signalized intersection. A white motorbike travels along the left edge ahead and moves away from the ego vehicle on the shoulder, which may merge into the ego lane as it continues. Two cars ahead in the ego lane go straight toward the crosswalk and set the pace. Oncoming traffic runs on the far side of the median, including a bus passing the junction without interaction. The overhead traffic light facing the ego direction shows green.", "hazard_reasoning": "There is a white motorbike driving on the left side of the road, away from the ego car. The motorbike's position on the left could lead it to merge back into the ego lane, so the driver should remain aware of its movement under this situation."}
{"id": "train_08569", "split": "train", "clip_key": "2020-0227-104226_055564_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "055564"}, "frames": ["2020-0227-104226_055564_movie_t-3.jpg", "2020-0227-104226_055564_movie_t-2.jpg", "2020-0227-104226_055564_movie_t-1.jpg", "2020-0227-104226_055564_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow two-lane urban street with no median and smooth pavement carries light traffic that briefly slows. The ego vehicle follows a gray hatchback directly ahead in the left-hand ego lane, which has stopped because a car from a side street on the left is turning right at the intersection ahead. The left-side car edges out and pivots across the front of the hatchback, temporarily blocking the ego lane and dictating the pace. No oncoming vehicles pass during this moment, and a white truck is parked along the opposite curb, slightly narrowing the rightward lane but not affecting the ego path.", "hazard_reasoning": "There is a gray hatchback, that has stopped, in front of the ego car, in the ego lane, because a car is turning right at the intersection. Because the hatchback has stopped in your lane, you should stop to avoid a collision."}
{"id": "train_08570", "split": "train", "clip_key": "titan_clip_135_000348_movie", "source": {"subset": "titan", "scenario": "clip_135", "frame": "000348"}, "frames": ["titan_clip_135_000348_movie_t-3.jpg", "titan_clip_135_000348_movie_t-2.jpg", "titan_clip_135_000348_movie_t-1.jpg", "titan_clip_135_000348_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop to avoid hitting the pedestrian.", "environment_perception": "A narrow urban back street with no lane markings runs between buildings; the stone-paved surface looks smooth and traffic is very light with no moving vehicles. On the left close to the curb, a pedestrian in a white shirt carrying a handbag walks away from the ego car along the road edge because there is no sidewalk, remaining near the vehicle's path. Ahead on the left, two other pedestrians proceed in the same direction beside the wall, potentially constraining the ego vehicle's pace. Farther ahead near the center of the roadway, another person in a white top continues forward ahead of the car. A silver minivan is parked on the right beside a construction barrier and cones, narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, walking on the left side of the road, away from the ego car, because there are no sidewalks. The pedestrian walking on the roadway without a sidewalk may enter the vehicle's path, so you should stop to avoid hitting the pedestrian."}
{"id": "train_08571", "split": "train", "clip_key": "titan_clip_761_000126_movie", "source": {"subset": "titan", "scenario": "clip_761", "frame": "000126"}, "frames": ["titan_clip_761_000126_movie_t-3.jpg", "titan_clip_761_000126_movie_t-2.jpg", "titan_clip_761_000126_movie_t-1.jpg", "titan_clip_761_000126_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian walking on road", "environment_perception": "A dense urban commercial street with two same-direction lanes and smooth pavement is shown, with slow-moving traffic amid many pedestrians. Delivery trucks are stopped along both curbs, narrowing the roadway. Ahead in the ego lane, a red scooter proceeds cautiously past the rear of a stopped box truck, constraining the ego vehicle's pace. On the left side near the center line, a pedestrian wearing a white shirt and carrying a handbag walks away from the ego car along the roadway because there is no sidewalk, keeping to the edge. In the right lane ahead, a white car creeps forward and pauses as pedestrians cross in front of it, further slowing the stream.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, walking on the left side of the road, away from the ego car, because there is no sidewalk. The pedestrian is walking on the roadway without a sidewalk, requiring the driver to yield to avoid a potential collision."}
{"id": "train_08572", "split": "train", "clip_key": "2020-0129-105040_054115_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "054115"}, "frames": ["2020-0129-105040_054115_movie_t-3.jpg", "2020-0129-105040_054115_movie_t-2.jpg", "2020-0129-105040_054115_movie_t-1.jpg", "2020-0129-105040_054115_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban single-lane road runs under an elevated expressway with guardrails and noise screens on both sides; the pavement looks smooth and traffic is light and steady as the route curves slightly left. A dark car ahead in the ego lane continues straight at moderate speed and effectively sets the ego vehicle's pace. On the far left beyond a barrier, a white van is stopped on a separate side road and does not interact with the lane. No salient traffic signals or unusual signs are visible.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car. The van is decelerating ahead, so the driver should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_08573", "split": "train", "clip_key": "2020-0220-102630_113583_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "113583"}, "frames": ["2020-0220-102630_113583_movie_t-3.jpg", "2020-0220-102630_113583_movie_t-2.jpg", "2020-0220-102630_113583_movie_t-1.jpg", "2020-0220-102630_113583_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane in each direction and no median stretches ahead; the pavement is smooth and traffic in the ego lane is slow-moving. A black hatchback directly ahead in the same lane rolls slowly and pauses, constraining the ego vehicle's pace. A red motorcycle is stopped along the left curb beside the ego lane as the flow ahead bunches up, and it could reenter the lane. The oncoming lane is mostly clear, while a small truck is parked on the right side and a roadside construction sign stands on the left.", "hazard_reasoning": "There is a red motorcycle stopped on the left side of the road, because of traffic congestion ahead. The motorbike poses a collision risk in the lane, so the driver should stop to avoid hitting it."}
{"id": "train_08574", "split": "train", "clip_key": "2020-0205-152530_016949_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "016949"}, "frames": ["2020-0205-152530_016949_movie_t-3.jpg", "2020-0205-152530_016949_movie_t-2.jpg", "2020-0205-152530_016949_movie_t-1.jpg", "2020-0205-152530_016949_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cone.", "environment_perception": "An urban multi-lane road curves left toward a signalized intersection on smooth asphalt, with light traffic. The traffic signal ahead shows red. A group of pedestrians waits at the far-right corner by the crosswalk, poised to cross and potentially enter the ego lane when permitted. A cyclist moves slowly along the right sidewalk near the intersection, parallel to the ego lane but outside it. Several cars are stopped along the left curb beyond the crosswalk, not affecting the ego vehicle's path. There is an orange and white traffic cone on the right side of the ego lane, and additional flexible posts mark the painted divider near the junction.", "hazard_reasoning": "There is an orange and white traffic cone on the right side of the ego lane. This cone indicates a potential lane obstruction, so the driver should manoeuvre carefully to avoid collision and maintain safe lane positioning."}
{"id": "train_08575", "split": "train", "clip_key": "2020-0205-103411_027530_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "027530"}, "frames": ["2020-0205-103411_027530_movie_t-3.jpg", "2020-0205-103411_027530_movie_t-2.jpg", "2020-0205-103411_027530_movie_t-1.jpg", "2020-0205-103411_027530_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three lanes in the ego direction curves gently right, with smooth asphalt, guardrails on both sides, and bright sun glare ahead; traffic is light and steady. A white van ahead in the ego lane continues at a constant speed and effectively sets the pace. Farther ahead, a few cars in the adjacent right lane travel at similar speed with large gaps and no lane changes toward the ego path. On the parallel opposite carriageway to the right, a stream of vehicles moves the other way behind a barrier, remaining fully separated. An overhead directional sign spans the road, and the left shoulder is partly coned off near the guardrail but does not intrude into the lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08576", "split": "train", "clip_key": "titan_clip_111_000558_movie", "source": {"subset": "titan", "scenario": "clip_111", "frame": "000558"}, "frames": ["titan_clip_111_000558_movie_t-3.jpg", "titan_clip_111_000558_movie_t-2.jpg", "titan_clip_111_000558_movie_t-1.jpg", "titan_clip_111_000558_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban narrow two-way street with smooth pavement runs past a building wrapped in green construction sheeting; there is no median and traffic is light with no moving vehicles visible. Ahead along the right edge of the road, a man in a white T-shirt and black shorts walks away from the ego car near the curb, occupying part of the space the car would use to pass. A second pedestrian stands just inside an open construction bay on the right, facing the street without stepping out. A tall red signpost, several bollards, and planter curbs line the sidewalk, and a bicycle is parked along the left side, while the open worksite creates a side opening beside the lane.", "hazard_reasoning": "There is a man in a white t-shirt and black shorts, walking on the right side of the road, away from the ego car. The pedestrian could step into the road unexpectedly, so the driver should manoeuvre carefully around the pedestrian to avoid a collision."}
{"id": "train_08577", "split": "train", "clip_key": "2020-0228-150133_042535_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "042535"}, "frames": ["2020-0228-150133_042535_movie_t-3.jpg", "2020-0228-150133_042535_movie_t-2.jpg", "2020-0228-150133_042535_movie_t-1.jpg", "2020-0228-150133_042535_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial has two lanes in each direction separated by a painted striped buffer, and the pavement is smooth. Traffic is heavy in the ego direction with stop-and-go congestion, while oncoming flow is light to moderate and moving. Directly ahead in the ego lane, a gray sedan is stopped because of congestion, holding the ego vehicle. To the left, a row of minivans and cars in the adjacent same-direction lane remains queued and creeping, limiting opportunities to change lanes. On the far side of the buffer, a few cars approach in the opposite lanes at steady speed without affecting the ego path.", "hazard_reasoning": "There is a gray Sedan stopped in the ego lane, because of traffic congestion, in front of the ego car. The driver should stop promptly to avoid colliding with the stationary vehicle ahead."}
{"id": "train_08578", "split": "train", "clip_key": "titan_clip_491_000180_movie", "source": {"subset": "titan", "scenario": "clip_491", "frame": "000180"}, "frames": ["titan_clip_491_000180_movie_t-3.jpg", "titan_clip_491_000180_movie_t-2.jpg", "titan_clip_491_000180_movie_t-1.jpg", "titan_clip_491_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrian", "environment_perception": "Urban commercial street with one lane per direction and a solid orange centerline; pavement is smooth with a manhole cover, and traffic is light. A medium truck is at the right curb partly protruding into the oncoming lane, angled into the roadway and slowing opposing flow but not entering the ego lane. Several cars travel ahead in the ego lane at a distance, moving away and lightly setting the pace. On the left edge close to the camera, a pedestrian in a blue shirt walks toward the ego-vehicle along the road because a parked vehicle blocks the sidewalk, so the person may encroach on the lane. A 40 speed limit sign is posted overhead, and cones and parked cars line the left side.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and walking on the left side of the road, towards the ego-car, because of the parked vehicle. The pedestrian may enter the vehicle's path due to limited sidewalk space, so the driver should manoeuvre carefully around the pedestrian to avoid collision."}
{"id": "train_08579", "split": "train", "clip_key": "2020-0226-140503_062748_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "062748"}, "frames": ["2020-0226-140503_062748_movie_t-3.jpg", "2020-0226-140503_062748_movie_t-2.jpg", "2020-0226-140503_062748_movie_t-1.jpg", "2020-0226-140503_062748_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban scene with tall buildings lines a two-way road that descends and curves gently right; the surface looks dark and worn, with a dashed center line and shrub-lined guardrails, and traffic is very light with no vehicles ahead or oncoming. The ego vehicle proceeds in the left lane typical of Japan. A single pedestrian on the left sidewalk ahead walks away in the same direction, kept separate from the carriageway by a railing and hedge, and does not approach the lane. No salient signals or signs appear.", "hazard_reasoning": "There are no detectable hazards in this scene, so the driver can continue driving normally."}
{"id": "train_08580", "split": "train", "clip_key": "2020-0226-140503_054597_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "054597"}, "frames": ["2020-0226-140503_054597_movie_t-3.jpg", "2020-0226-140503_054597_movie_t-2.jpg", "2020-0226-140503_054597_movie_t-1.jpg", "2020-0226-140503_054597_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multi-lane road approaches a signalized intersection with no median and smooth reddish pavement, and traffic slows to a stop. The ego vehicle is in the left lane with another same-direction lane to the right. A white van directly ahead in the ego lane stops at the line for a yellow signal, holding the ego car. To the right, a black taxi in the adjacent lane is also stopped at the intersection, aligned with the van. On the left edge beside the van, a red delivery scooter inches forward near the curb toward the crosswalk, close to the ego lane. Pedestrians wait on the sidewalks at the crosswalk while the signal shows yellow for this approach.", "hazard_reasoning": "There is a white van stopped in the ego lane in front of the ego car, because of a yellow traffic light. Driver should stop to avoid colliding with the halted vehicle and comply with the traffic signal."}
{"id": "train_08581", "split": "train", "clip_key": "titan_clip_1080_000180_movie", "source": {"subset": "titan", "scenario": "clip_1080", "frame": "000180"}, "frames": ["titan_clip_1080_000180_movie_t-3.jpg", "titan_clip_1080_000180_movie_t-2.jpg", "titan_clip_1080_000180_movie_t-1.jpg", "titan_clip_1080_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban residential street without a centerline stretches ahead, bordered by buildings on the left and a fence-topped wall with trees on the right; the pavement is dry and smooth, and traffic is light with no other moving vehicles visible. On the right ahead, a pedestrian wearing a yellow sweater and a blue skirt, carrying a white bag, walks away from the ego vehicle along the railing, occupying the roadway edge and limiting passing space. A car sits in a recessed garage and other parked vehicles line the left side, remaining stationary and not encroaching into the travel path.", "hazard_reasoning": "There is a pedestrian wearing a yellow sweater and a blue skirt, carrying a white bag, and walking, on the right side of the road, away from the ego car. The pedestrian is close to the roadway, so the driver should carefully manoeuvre to maintain a safe distance and avoid encroaching on their path."}
{"id": "train_08582", "split": "train", "clip_key": "2020-0131-103016_066723_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "066723"}, "frames": ["2020-0131-103016_066723_movie_t-3.jpg", "2020-0131-103016_066723_movie_t-2.jpg", "2020-0131-103016_066723_movie_t-1.jpg", "2020-0131-103016_066723_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane intersection passes under pedestrian overpasses, the pavement is smooth, and the road ahead rises with several same-direction lanes and no median; traffic appears moderate with queues on the far side. Ahead beyond the junction, multiple cars in the ego direction wait on the uphill approach, some creeping, forming a queue that will constrain pace after crossing. At the far right, several small vans and cars are stopped in the rightmost lane, likely to merge left once released and potentially entering the ego lane. Near the left foreground, a green car moves through the intersection across the ego path and clears. Overhead blue guide signs show Route 15 toward Yokohama and Shinagawa, and signal heads are mounted beneath the bridges.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08583", "split": "train", "clip_key": "2020-0203-114632_085026_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "085026"}, "frames": ["2020-0203-114632_085026_movie_t-3.jpg", "2020-0203-114632_085026_movie_t-2.jpg", "2020-0203-114632_085026_movie_t-1.jpg", "2020-0203-114632_085026_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane arterial runs under an elevated expressway, with smooth pavement and moderate traffic that compresses ahead. A silver van directly ahead in the ego lane slows because of congestion, constraining the ego car's pace. On the left, a heavily loaded small truck near the curb creeps forward in the adjacent lane, causing left-lane vehicles to pass slowly alongside. Farther ahead, several trucks continue in the same direction at reduced speed in the traffic queue. A yellow roadside sign on the right warns of merging.", "hazard_reasoning": "There is a silver van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Slow down to maintain a safe following distance and adapt to the slowed traffic flow."}
{"id": "train_08584", "split": "train", "clip_key": "titan_clip_845_000024_movie", "source": {"subset": "titan", "scenario": "clip_845", "frame": "000024"}, "frames": ["titan_clip_845_000024_movie_t-3.jpg", "titan_clip_845_000024_movie_t-2.jpg", "titan_clip_845_000024_movie_t-1.jpg", "titan_clip_845_000024_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "A narrow urban residential street with no center divider slopes gently ahead, the pavement smooth and dry, and traffic light with no moving vehicles visible. A white box truck is stopped along the left edge ahead with its rear doors open as it is being unloaded, occupying part of the lane and constraining the ego vehicle's path. A person stands and moves around the back of the truck on the left, close to the roadway and potentially stepping into the lane. A blue left-pointing arrow sign stands on the right curb near the hedged wall. Tall walls and hedges tightly border the road, limiting shoulder space and sight lines around the truck.", "hazard_reasoning": "There is a white truck parked at the left side of the road because it is being unloaded. This vehicle blocks part of the lane and reduces visibility of oncoming hazards, so the driver should manoeuvre carefully around it to avoid a collision."}
{"id": "train_08585", "split": "train", "clip_key": "2020-0129-105040_060405_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "060405"}, "frames": ["2020-0129-105040_060405_movie_t-3.jpg", "2020-0129-105040_060405_movie_t-2.jpg", "2020-0129-105040_060405_movie_t-1.jpg", "2020-0129-105040_060405_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck.", "environment_perception": "A narrow urban shopping street with a single lane each way and no median stretches ahead on smooth pavement with red-painted shoulders, and traffic is very light. The road in the ego lane is clear while the oncoming lane has no approaching vehicles. Bicycles lean against the left curb and several scooters and bicycles are parked along the right edge, slightly narrowing the passage beside storefronts. No salient traffic signals or posted speed signs are visible.", "hazard_reasoning": "There's a white truck parked on the right side of the road. This parked truck could obscure oncoming vehicles or pedestrians, so the driver should manoeuvre carefully to maintain safe clearance."}
{"id": "train_08586", "split": "train", "clip_key": "titan_clip_1090_000396_movie", "source": {"subset": "titan", "scenario": "clip_1090", "frame": "000396"}, "frames": ["titan_clip_1090_000396_movie_t-3.jpg", "titan_clip_1090_000396_movie_t-2.jpg", "titan_clip_1090_000396_movie_t-1.jpg", "titan_clip_1090_000396_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian crossing", "environment_perception": "An urban commercial street with shops lines both sides; the brick-paved roadway has no marked lanes or median, the surface looks even, and there are no moving vehicles so flow is light. In the middle ahead, a pedestrian in a white T-shirt carrying a handbag crosses from left to right in front of the ego vehicle, occupying the path and constraining progress. Near the right curb by the convenience store, another pedestrian walks along the frontage toward the right, close to the edge but not entering the roadway. At the left curb, a person stands looking at a phone, remaining stationary and out of the path. A parked bicycle and storefront displays line the right side.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and carrying a handbag, in the middle of the road in front of the ego car, crossing to the right side of the road. The driver should slow down because the pedestrian is directly in the vehicle's path, increasing the risk of collision."}
{"id": "train_08587", "split": "train", "clip_key": "titan_clip_430_000456_movie", "source": {"subset": "titan", "scenario": "clip_430", "frame": "000456"}, "frames": ["titan_clip_430_000456_movie_t-3.jpg", "titan_clip_430_000456_movie_t-2.jpg", "titan_clip_430_000456_movie_t-1.jpg", "titan_clip_430_000456_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of roadside pedestrian", "environment_perception": "A quiet urban two-way street with one narrow lane per direction runs between apartment buildings, with smooth pavement, green edge markings, and orange bollards on the right; traffic is light. Ahead in the ego lane, a pedestrian wearing white clothing comes from the left side of the road and slowly crosses in front of the car, constraining the vehicle's pace. Farther ahead at the T-junction, a white van moves along the cross street from right to left without entering the ego lane. On the right sidewalk near a pole, another pedestrian stands still and remains clear of the roadway. The road bends slightly left beyond the intersection.", "hazard_reasoning": "There is a pedestrian wearing white clothing standing on the left side of the road. The pedestrian may step into the lane unexpectedly, so the driver should remain cautious."}
{"id": "train_08588", "split": "train", "clip_key": "2020-0203-154554_080213_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-154554_080213_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-154554_080213_movie_t-3_augB1.jpg", "2020-0203-154554_080213_movie_t-2_augB1.jpg", "2020-0203-154554_080213_movie_t-1_augB1.jpg", "2020-0203-154554_080213_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with multiple lanes runs between mid-rise buildings and leafless trees; the pavement is dry and the overall flow is heavy, forming a slow queue in the ego direction under low sun glare. A white sedan directly ahead in the ego lane slows because of congestion ahead, constraining the ego car's pace. A dark sedan slightly ahead to the left in the adjacent same-direction lane also creeps forward, limiting room to change lanes. Oncoming traffic includes a white minivan approaching to the right of the centerline and continuing straight without interacting.", "hazard_reasoning": "There is a white sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should follow the vehicle ahead to maintain a safe distance in slowing traffic."}
{"id": "train_08589", "split": "train", "clip_key": "2020-0203-114632_020311_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "020311"}, "frames": ["2020-0203-114632_020311_movie_t-3.jpg", "2020-0203-114632_020311_movie_t-2.jpg", "2020-0203-114632_020311_movie_t-1.jpg", "2020-0203-114632_020311_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Stop for the cyclist at the intersection", "environment_perception": "An urban signalized intersection with smooth pavement and a red-painted bike lane is seen, with the ego approach stopped at a red light while cross-street traffic moves at a moderate flow; no median is present. On the left edge next to the ego lane, a cyclist carrying a backpack stands with the bicycle in the bike lane, waiting because the signal is red and may proceed when it changes. Ahead in the intersection, several vans and cars travel right-to-left across the ego path on their green, keeping the ego vehicle halted. At the near left crosswalk, a pedestrian walks across the ego approach from the sidewalk. The traffic signal facing the camera clearly shows red.", "hazard_reasoning": "There is a cyclist carrying a backpack, standing on the left side of the road, because of a red traffic light. The cyclist may enter the intersection when the light changes, requiring the driver to remain alert and yield."}
{"id": "train_08590", "split": "train", "clip_key": "2020-0131-135401_010049_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "010049"}, "frames": ["2020-0131-135401_010049_movie_t-3.jpg", "2020-0131-135401_010049_movie_t-2.jpg", "2020-0131-135401_010049_movie_t-1.jpg", "2020-0131-135401_010049_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street with one lane each direction runs between close buildings, divided by a solid orange centerline on smooth pavement; traffic is light and the ego car is stationary. A white box truck directly ahead in the ego lane is stopped at a red signal, holding the ego vehicle at the intersection as stated. An oncoming car proceeds in the opposite lane past the junction without affecting the ego path. The traffic light ahead shows red above the crossroads. A few parked vehicles and storefronts line the right side beyond the junction, slightly narrowing the visible roadway.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because the light is red. You should stop to avoid colliding with the stationary truck and comply with the traffic signal."}
{"id": "train_08591", "split": "train", "clip_key": "2020-0129-105040_016879_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "016879"}, "frames": ["2020-0129-105040_016879_movie_t-3.jpg", "2020-0129-105040_016879_movie_t-2.jpg", "2020-0129-105040_016879_movie_t-1.jpg", "2020-0129-105040_016879_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes plus a red-painted curb lane runs through dense midrise buildings; pavement is smooth and traffic is heavy, queuing at an intersection. A white hatchback directly ahead in the ego lane is stopped for a red traffic light, constraining the ego vehicle. In the lane to the right, a silver microvan is slightly ahead and inching forward with the queue beside the ego path. In the red curb lane to the left, a white van ahead remains stopped among other vehicles. Overhead signals display red for through traffic.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane because of a red traffic light ahead. You must stop to avoid a rear-end collision with the halted vehicle at the red signal."}
{"id": "train_08592", "split": "train", "clip_key": "2020-0226-140503_043970_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "043970"}, "frames": ["2020-0226-140503_043970_movie_t-3.jpg", "2020-0226-140503_043970_movie_t-2.jpg", "2020-0226-140503_043970_movie_t-1.jpg", "2020-0226-140503_043970_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban downtown scene on a multi-lane two-way arterial with no physical median and smooth pavement, where traffic is moderate and queues build ahead at a red signal. A Coca-Cola delivery truck is just ahead to the left in the ego lane, moving slowly and limiting progress. To the right of the ego car, a silver van comes from the opposite direction along its right lane and passes alongside. Farther ahead in the opposing lanes, a black sedan approaches in the middle lane, continuing straight without entering the ego path.", "hazard_reasoning": "There is a silver van coming from the opposite direction along the right lane next to the ego car. The van may merge or cut into the ego-vehicle's lane unexpectedly, so the driver should reduce speed to maintain a safe distance."}
{"id": "train_08593", "split": "train", "clip_key": "titan_clip_924_000348_movie", "source": {"subset": "titan", "scenario": "clip_924", "frame": "000348"}, "frames": ["titan_clip_924_000348_movie_t-3.jpg", "titan_clip_924_000348_movie_t-2.jpg", "titan_clip_924_000348_movie_t-1.jpg", "titan_clip_924_000348_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the van", "environment_perception": "An urban two-way street with one lane in each direction and no median runs between mid-rise buildings; the pavement looks smooth and traffic remains light as the road gently climbs. A small utility vehicle ahead in the ego lane proceeds slowly, constraining the ego vehicle's pace. On the left curb just ahead, a black van is parked for loading with cones set out, slightly narrowing the left edge of the travel lane.", "hazard_reasoning": "There is a black van parked on the left side of the road, because it is being loaded. The parked van reduces the available lane width and requires you to manoeuvre around it to avoid a collision."}
{"id": "train_08594", "split": "train", "clip_key": "titan_clip_426_000498_movie", "source": {"subset": "titan", "scenario": "clip_426", "frame": "000498"}, "frames": ["titan_clip_426_000498_movie_t-3.jpg", "titan_clip_426_000498_movie_t-2.jpg", "titan_clip_426_000498_movie_t-1.jpg", "titan_clip_426_000498_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around truck", "environment_perception": "An urban two-way street with one narrow lane each way and no median runs between office buildings; the asphalt is smooth and traffic is light. Immediately ahead in the left lane, a white flatbed truck is parked for unloading, occupying much of the ego lane and constraining the ego vehicle's pace as it approaches to pass. A worker on the truck bed actively handles debris and swings a panel, keeping close to the roadway while the truck remains stationary. Farther ahead on the right sidewalk, a uniformed person stands by the curb observing the operation but stays off the road. A green cone and the truck's open tailgate sit at the rear, further narrowing the available space.", "hazard_reasoning": "There is a white truck parked in the left lane because it is being unloaded. The partially obstructing vehicle reduces the available lane width and limits visibility ahead, so the driver should manoeuvre carefully around it."}
{"id": "train_08595", "split": "train", "clip_key": "2020-0203-114632_026449_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "026449"}, "frames": ["2020-0203-114632_026449_movie_t-3.jpg", "2020-0203-114632_026449_movie_t-2.jpg", "2020-0203-114632_026449_movie_t-1.jpg", "2020-0203-114632_026449_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road carries same-direction traffic in two lanes, with a segregated red side lane on the right marked by flexible posts; the pavement is dry and traffic moves slowly. A black van directly ahead in the ego lane slows to a crawl because congestion builds further up, and it sets the ego vehicle's pace. In the adjacent left lane, a silver kei car followed by a white SUV progresses slowly alongside at similar speed. On the right sidewalk near the white building, a group of pedestrians walks along the curb without approaching the roadway.", "hazard_reasoning": "There is a black van slowing down in the ego lane, because of traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and adjust speed for the congested traffic."}
{"id": "train_08596", "split": "train", "clip_key": "2020-0205-103411_113521_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "113521"}, "frames": ["2020-0205-103411_113521_movie_t-3.jpg", "2020-0205-103411_113521_movie_t-2.jpg", "2020-0205-103411_113521_movie_t-1.jpg", "2020-0205-103411_113521_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with two lanes in each direction and a low central divider is dry and in good condition, and traffic is light as the ego vehicle approaches a signalized intersection with a zebra crossing. Ahead in the ego lane, a white van drives away from the camera, continuing straight as traffic ahead moves and gradually widening the gap. To the right, an oncoming white van proceeds straight past the crosswalk in its lane, posing no immediate conflict. Farther ahead, a small car in the same direction cruises in the adjacent right lane, loosely setting the pace.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car, because traffic ahead is moving. You should follow the vehicle ahead to maintain safe distance and ensure you stop at the red light."}
{"id": "train_08597", "split": "train", "clip_key": "titan_clip_910_000342_movie", "source": {"subset": "titan", "scenario": "clip_910", "frame": "000342"}, "frames": ["titan_clip_910_000342_movie_t-3.jpg", "titan_clip_910_000342_movie_t-2.jpg", "titan_clip_910_000342_movie_t-1.jpg", "titan_clip_910_000342_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street with a single narrow shared lane is brick-paved and lacks any divider; vehicle traffic is very light and slow amid many pedestrians. A pedestrian in black pants and a white shirt crosses from the middle of the lane to the left directly ahead of the vehicle, briefly occupying the path. A white minibus further ahead in the same lane creeps away, its pace constrained by people crossing. From the right curb, a pedestrian steps into the roadway and walks along the near edge, which may enter the ego lane. Two more pedestrians near the center-right cross diagonally toward the left a few meters ahead, further filling the lane. Parked bicycles and shop signboards along the left side encroach on the roadway.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, crossing from the middle of the lane to the left side. The pedestrian is moving unpredictably across the lane, so the driver should slow down to avoid a collision."}
{"id": "train_08598", "split": "train", "clip_key": "titan_clip_180_000270_movie", "source": {"subset": "titan", "scenario": "clip_180", "frame": "000270"}, "frames": ["titan_clip_180_000270_movie_t-3.jpg", "titan_clip_180_000270_movie_t-2.jpg", "titan_clip_180_000270_movie_t-1.jpg", "titan_clip_180_000270_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of unloading van", "environment_perception": "An urban two-way road with one lane per direction and no median runs through a signalized intersection; the pavement looks smooth and traffic is light. A white van is parked along the left curb ahead being unloaded, encroaching slightly into the ego lane and narrowing the path. A small work truck stands stopped near the left curb just before the crosswalk, further reducing space on the approach. In the opposite lane, a white car and a few other vehicles come toward the camera through the intersection, continuing straight as oncoming traffic. A pedestrian signal and overhead traffic lights are visible at the junction.", "hazard_reasoning": "There is a white van parked on the left side of the road because it is being unloaded. The parked van may re-enter traffic or partially block the lane, so the driver should remain cautious under this situation."}
{"id": "train_08599", "split": "train", "clip_key": "2020-0205-103411_093212_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "093212"}, "frames": ["2020-0205-103411_093212_movie_t-3.jpg", "2020-0205-103411_093212_movie_t-2.jpg", "2020-0205-103411_093212_movie_t-1.jpg", "2020-0205-103411_093212_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with a planted median separates oncoming traffic, the pavement is smooth, and flow is moderate as vehicles approach a signalized intersection. The white pickup truck directly ahead in the ego lane slows toward a stop for a red light, constraining the ego vehicle. In the lane to the left, a small white van continues straight at a steady pace alongside. A motor scooter ahead near the left curb proceeds forward and edges slightly right while remaining clear of the ego path. A roadside sign on the right prohibits right turns during 7-9 and 17-19.", "hazard_reasoning": "There is a white pickup truck slowing in front of the ego car, in the ego lane, because of a red traffic light. The driver should slow down to avoid colliding with the decelerating pickup truck as it prepares to stop at the red light."}
{"id": "train_08600", "split": "train", "clip_key": "2020-0129-144857_021068_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "021068"}, "frames": ["2020-0129-144857_021068_movie_t-3.jpg", "2020-0129-144857_021068_movie_t-2.jpg", "2020-0129-144857_021068_movie_t-1.jpg", "2020-0129-144857_021068_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and a curbside guardrail on the right carries heavy, slow traffic under overhead expressway signs. Directly ahead in the ego lane, a black sedan is stopped because of congestion and holds the ego car at a standstill. Farther ahead in the same line, a white box truck inches forward, compressing the queue and limiting progress. In the adjacent lane to the left, a silver van draws level and creeps ahead, while a small white hatchback ahead-left also queues, both remaining in their lanes without entering the ego path. A forward traffic signal shows green, but the jam prevents movement.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. You must stop to avoid colliding with the stationary vehicle ahead."}
{"id": "train_08601", "split": "train", "clip_key": "2020-0226-101332_017213_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "017213"}, "frames": ["2020-0226-101332_017213_movie_t-3.jpg", "2020-0226-101332_017213_movie_t-2.jpg", "2020-0226-101332_017213_movie_t-1.jpg", "2020-0226-101332_017213_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop.", "environment_perception": "An urban multi-lane intersection with smooth pavement is ahead, and traffic is light but halted at the stop line under a red signal. Directly ahead in the ego lane, a taxi van remains stopped for the red light, constraining the ego vehicle's movement. In the adjacent right lane, a yellow taxi is also stopped and poised to continue straight when the signal changes. To the left of the ego vehicle, a silver box truck waits beside us, partly blocking the view toward the left crosswalk. A few pedestrians stand on the left sidewalk near the corner without entering the roadway. Overhead traffic lights for this approach display red.", "hazard_reasoning": "There is a red van stopped in the ego lane because of a red traffic light ahead. The driver should stop to maintain a safe following distance and avoid colliding with the stopped vehicle."}
{"id": "train_08602", "split": "train", "clip_key": "2020-0205-103411_077619_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "077619"}, "frames": ["2020-0205-103411_077619_movie_t-3.jpg", "2020-0205-103411_077619_movie_t-2.jpg", "2020-0205-103411_077619_movie_t-1.jpg", "2020-0205-103411_077619_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between mid-rise buildings, separated from oncoming traffic by a low shrub median; the pavement looks smooth and overall flow is moderate with some slowing ahead. A black box truck directly ahead in the ego lane slows because of traffic congestion ahead, constraining the ego car's pace. To its left, a white box truck in the adjacent same-direction lane travels slightly ahead at a similar speed, reducing opportunities to pass. Across the median to the right, an oncoming dump truck proceeds in the opposite direction without interaction. A pedestrian footbridge spans the road ahead.", "hazard_reasoning": "There is a black truck slowing in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a rear-end collision under these conditions."}
{"id": "train_08603", "split": "train", "clip_key": "2020-0129-105040_091058_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "091058"}, "frames": ["2020-0129-105040_091058_movie_t-3.jpg", "2020-0129-105040_091058_movie_t-2.jpg", "2020-0129-105040_091058_movie_t-1.jpg", "2020-0129-105040_091058_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A tree-lined urban boulevard with two lanes in each direction is divided by a raised, landscaped median; the asphalt is dry and smooth, and traffic is light to moderate with steady flow. Ahead in the ego lane near the median, a small white truck gradually slows, constraining the ego vehicle's pace. Slightly ahead to the left in the curbside lane, a white car continues straight at a steady speed and remains in its lane without encroaching on the ego path. In the opposite lanes beyond the median, several vehicles, including vans, approach and pass steadily with no interaction.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The truck's reduced speed in your lane increases the risk of a collision if you maintain speed, so you should slow down to keep a safe following distance."}
{"id": "train_08604", "split": "train", "clip_key": "titan_clip_688_000534_movie", "source": {"subset": "titan", "scenario": "clip_688", "frame": "000534"}, "frames": ["titan_clip_688_000534_movie_t-3.jpg", "titan_clip_688_000534_movie_t-2.jpg", "titan_clip_688_000534_movie_t-1.jpg", "titan_clip_688_000534_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way carriageway, no median, and smooth asphalt shows very light vehicular flow as shopfronts and parked vehicles constrict the edges. A pedestrian ahead in the middle of the lane walks toward the ego vehicle, briefly occupying the travel path. On the right, a man carrying a backpack and wearing a gray shirt walks toward the ego car because shop displays and a parked car obstruct the shoulder, so he continues in the roadway. Another person stands by a merchandise rack on the right, remaining at the curb and not entering the lane. Bicycles line the left side and a white car is stopped on the right, further narrowing clearance.", "hazard_reasoning": "There is a man carrying a backpack, wearing a gray shirt, and walking on the right side of the road towards the ego car because of obstacles on the right shoulder. The pedestrian is encroaching into the lane, so the driver should slow down to avoid a potential collision."}
{"id": "train_08605", "split": "train", "clip_key": "2020-0212-102546_031381_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "031381"}, "frames": ["2020-0212-102546_031381_movie_t-3.jpg", "2020-0212-102546_031381_movie_t-2.jpg", "2020-0212-102546_031381_movie_t-1.jpg", "2020-0212-102546_031381_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement and a painted median separating oncoming traffic shows moderate flow that eases near a signalized intersection. In the ego lane a white box truck ahead slows, matching the caption, and it sets the pace as both vehicles approach the stop line. To the right, a silver car in the dedicated right-turn lane edges forward alongside, preparing to turn and remaining outside the ego path. An overhead traffic signal ahead displays red for the ego approach, and the lanes bend slightly right beyond the junction. Buildings, guardrails, and clear lane markings frame the scene, and no pedestrians or cyclists are visible.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a collision with the decelerating vehicle ahead."}
{"id": "train_08606", "split": "train", "clip_key": "titan_clip_336_001044_movie", "source": {"subset": "titan", "scenario": "clip_336", "frame": "001044"}, "frames": ["titan_clip_336_001044_movie_t-3.jpg", "titan_clip_336_001044_movie_t-2.jpg", "titan_clip_336_001044_movie_t-1.jpg", "titan_clip_336_001044_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping alley with a single narrow shared roadway is brick-paved and lacks lane markings or a divider, and traffic is light with no motor vehicles visible as the camera moves forward. Ahead on the left, a man wearing a white shirt and black pants with a backpack walks away along the left edge of the roadway, occupying the path in the same direction. Near the left storefront, two men stand at the entrance just off the roadway, close to the travel path. The right side has a parked bicycle and freestanding restaurant signs and planters that encroach slightly into the roadway, while a covered object sits along the left edge.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, carrying a backpack, and walking on the left side of the road, away from the ego car. The driver should slow down to avoid collision with the pedestrian walking close to the vehicle's path."}
{"id": "train_08607", "split": "train", "clip_key": "titan_clip_397_000444_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_397_000444_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_397_000444_movie_t-3_augB1.jpg", "titan_clip_397_000444_movie_t-2_augB1.jpg", "titan_clip_397_000444_movie_t-1_augB1.jpg", "titan_clip_397_000444_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian.", "environment_perception": "A narrow urban commercial street has a single through lane with no median and worn but intact asphalt, and traffic is light and slow-moving. A pedestrian wearing a white shirt crosses from left to right directly in front of the ego car, stepping into the lane and briefly blocking its path. A white car ahead in the same lane rolls slowly up the street, constrained by the pedestrian's crossing. A white work truck stands along the left curb beside construction cones, protruding slightly and narrowing the lane near the ego vehicle.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and crossing the street in front of the ego car. The pedestrian is entering the vehicle's path, so you should yield to avoid a collision."}
{"id": "train_08608", "split": "train", "clip_key": "titan_clip_1281_000336_movie", "source": {"subset": "titan", "scenario": "clip_1281", "frame": "000336"}, "frames": ["titan_clip_1281_000336_movie_t-3.jpg", "titan_clip_1281_000336_movie_t-2.jpg", "titan_clip_1281_000336_movie_t-1.jpg", "titan_clip_1281_000336_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban back street runs under brick railway arches with small shops, forming a single narrow lane with double center lines and no sidewalks; the pavement looks worn and vehicle traffic is absent. On the right edge near the ego vehicle, a pedestrian in a blue shirt and gray pants walks toward the camera along the roadway because there is no sidewalk, potentially drifting into the lane. Slightly ahead at the right curb, a man in a white shirt stands facing the road and raises an arm, lingering close to the lane and possibly stepping out. Farther ahead in the middle distance, another pedestrian moves diagonally across the lane from left to right, occupying the path.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and gray pants, walking on the right side of the road, toward the ego car, because there is no sidewalk. The driver should carefully manoeuvre around the pedestrian to avoid a potential collision in this confined space."}
{"id": "train_08609", "split": "train", "clip_key": "2020-0227-104226_108770_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "108770"}, "frames": ["2020-0227-104226_108770_movie_t-3.jpg", "2020-0227-104226_108770_movie_t-2.jpg", "2020-0227-104226_108770_movie_t-1.jpg", "2020-0227-104226_108770_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the truck.", "environment_perception": "An urban multi-lane arterial with two same-direction lanes runs past low-rise buildings; pavement is smooth and traffic is heavy and slow. A white box truck directly ahead in the ego lane is stopped, holding the ego vehicle in place. To the right, a silver hatchback slightly ahead creeps forward in the adjacent lane, preventing an easy merge around the truck. To the left near the curb, a small flatbed kei-truck ahead inches along in its lane, keeping gaps tight around the stopped vehicle. A pedestrian overpass spans the road, and a raised median with shrubs separates opposing traffic.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The stopped white truck prevents forward visibility and poses a collision risk if the driver does not stop promptly."}
{"id": "train_08610", "split": "train", "clip_key": "2020-0220-102630_101496_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "101496"}, "frames": ["2020-0220-102630_101496_movie_t-3.jpg", "2020-0220-102630_101496_movie_t-2.jpg", "2020-0220-102630_101496_movie_t-1.jpg", "2020-0220-102630_101496_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with multiple lanes and a narrow raised median runs straight to a signalized intersection; the pavement is dry and intact, and traffic is moderate with vehicles queued. A gray truck directly ahead in the ego lane is stopped at the line because the light ahead shows red, so the ego car waits behind it. A white light truck farther ahead in the same lane also stands still, extending the queue and constraining the pace. On the right beyond the median, an oncoming black car travels toward the camera in its lane without interacting. Several pedestrians stand near the far crosswalk, not entering the roadway.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car, because of a red traffic light. The driver must stop to avoid a collision and comply with the signal."}
{"id": "train_08611", "split": "train", "clip_key": "2020-0226-101332_063876_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "063876"}, "frames": ["2020-0226-101332_063876_movie_t-3.jpg", "2020-0226-101332_063876_movie_t-2.jpg", "2020-0226-101332_063876_movie_t-1.jpg", "2020-0226-101332_063876_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction runs past mid-rise buildings, separated from oncoming traffic by a solid yellow line and a guardrail; the pavement is wet and traffic is moderate, queuing at an intersection. A gray van directly ahead in the ego lane is stopped at the traffic light, holding the ego vehicle as stated. To the left, a white wagon is also stopped in the adjacent lane beside the ego car, waiting to proceed. On the far side of the divider, several oncoming cars and a truck continue through the junction. A suspended traffic signal ahead controls the intersection and keeps the queue stationary.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid colliding with the halted van ahead."}
{"id": "train_08612", "split": "train", "clip_key": "titan_clip_301_000498_movie", "source": {"subset": "titan", "scenario": "clip_301", "frame": "000498"}, "frames": ["titan_clip_301_000498_movie_t-3.jpg", "titan_clip_301_000498_movie_t-2.jpg", "titan_clip_301_000498_movie_t-1.jpg", "titan_clip_301_000498_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian directing traffic", "environment_perception": "An urban two-way intersection with narrow lanes and no median is ahead; the pavement looks sound and overall traffic is light but momentarily controlled. In front of the ego car, a pedestrian in blue pants and a blue jacket stands in the middle of the road directing traffic and pausing the flow at the intersection. On the cross street to the left, a teal cargo truck is stopped near the corner and partly occupies the approach, constraining space. Behind the traffic controller, a bicyclist moves slowly from right to left across the junction, crossing the ego vehicle's path. On the near left, workers with a striped barricade indicate a small work zone at the corner.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a blue jacket, directing traffic, at an intersection, in the middle of the road, in front of the ego car. The pedestrian may signal vehicles to stop or alter their path unexpectedly, so the driver should be aware to adjust speed and avoid conflicts."}
{"id": "train_08613", "split": "train", "clip_key": "2020-0227-104226_114012_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "114012"}, "frames": ["2020-0227-104226_114012_movie_t-3.jpg", "2020-0227-104226_114012_movie_t-2.jpg", "2020-0227-104226_114012_movie_t-1.jpg", "2020-0227-104226_114012_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three lanes in the ego direction runs past trees on the left and commercial buildings on the right, with a low planted median and smooth pavement; traffic is moderate and flows steadily toward a signalized intersection. A black van ahead in the ego lane accelerates toward the junction because the light is green, widening its gap. Farther ahead in the same lane, another car holds a steady pace and ultimately limits the flow. Vehicles in the right lane move in a denser pack at similar speed without lane changes.", "hazard_reasoning": "There is a black van accelerating ahead, in front of the ego-car, in the ego lane, because the traffic light is green. The driver should follow the vehicle ahead to maintain a safe distance in case the signal changes or the van's speed varies unexpectedly."}
{"id": "train_08614", "split": "train", "clip_key": "2020-0204-103442_010298_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "010298"}, "frames": ["2020-0204-103442_010298_movie_t-3.jpg", "2020-0204-103442_010298_movie_t-2.jpg", "2020-0204-103442_010298_movie_t-1.jpg", "2020-0204-103442_010298_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes per direction runs between tall buildings, divided by a low planted median with guardrails. The asphalt is smooth and dry, and traffic flow is heavy, especially visible as long queues ahead and in the oncoming lanes. A black SUV directly ahead in the ego lane is stopped due to congestion ahead, holding the ego vehicle at a standstill. Oncoming cars to the right of the median crawl in dense traffic, showing the broader jam through the corridor. A few pedestrians walk and wait along the left sidewalk near storefronts, remaining clear of the roadway.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid collision with halted traffic."}
{"id": "train_08615", "split": "train", "clip_key": "titan_clip_788_000282_movie", "source": {"subset": "titan", "scenario": "clip_788", "frame": "000282"}, "frames": ["titan_clip_788_000282_movie_t-3.jpg", "titan_clip_788_000282_movie_t-2.jpg", "titan_clip_788_000282_movie_t-1.jpg", "titan_clip_788_000282_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban neighborhood scene shows a narrow two-way road with no center divider approaching an unsignalized intersection; the pavement is smooth and traffic is light. Two pedestrians wearing gray shirts are ahead in the middle of the intersection walking toward the right side, crossing the ego vehicle's path. A small white van is stopped on the far side slightly left of center near the curb, which narrows sight lines into the cross street. On the left sidewalk by storefronts, another pedestrian stands at the curb near the zebra crossing and may enter the roadway.", "hazard_reasoning": "There are two pedestrians wearing gray shirts and walking in the middle of the intersection, towards the right side. Slow down because these pedestrians may cross your path unpredictably."}
{"id": "train_08616", "split": "train", "clip_key": "2020-0228-150133_066588_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "066588"}, "frames": ["2020-0228-150133_066588_movie_t-3.jpg", "2020-0228-150133_066588_movie_t-2.jpg", "2020-0228-150133_066588_movie_t-1.jpg", "2020-0228-150133_066588_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban multi-lane arterial carries heavy, slow traffic on smooth pavement; a painted hatched gore separates an auxiliary right-side lane. A black sedan directly ahead in the ego lane slows to a crawl because of congestion, constraining the ego car's pace. In the adjacent left lanes, a queue of vans and cars creeps forward alongside, keeping their lanes and blocking any advance. Farther ahead in the ego lane, a white box truck rolls slowly with brake lights on, contributing to the bottleneck. A white van continues ahead in the separated right-side lane beyond the hatched area. Overhead blue direction signs point toward Ogikubo, Oizumi Yahara, and Kitamachi, guiding lane choice.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The vehicle ahead is decelerating due to congestion, so the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_08617", "split": "train", "clip_key": "2020-0218-103119_018884_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "018884"}, "frames": ["2020-0218-103119_018884_movie_t-3.jpg", "2020-0218-103119_018884_movie_t-2.jpg", "2020-0218-103119_018884_movie_t-1.jpg", "2020-0218-103119_018884_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the stopped vehicle", "environment_perception": "An urban multi-lane two-way road with double yellow centerlines and smooth pavement carries light traffic toward a signalized intersection. A white van ahead in the ego lane rolls at a steady pace toward the crosswalk, setting the ego vehicle's speed. On the right, a three-wheeled scooter emerges from the curb lane and proceeds through the junction, potentially merging ahead of the ego path. On the left, a green sedan is stopped at the curb, remaining static and outside the travel lane. A 50 km/h speed-limit sign and a no-U-turn sign are posted on the left, with overhead signals visible at the intersection.", "hazard_reasoning": "There is a green sedan stopped at the left side of the road. The driver should be cautious of this vehicle as it may merge into the lane or block traffic unexpectedly, requiring prompt reaction."}
{"id": "train_08618", "split": "train", "clip_key": "2020-0131-103016_047284_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-103016_047284_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-103016_047284_movie_t-3_augB1.jpg", "2020-0131-103016_047284_movie_t-2_augB1.jpg", "2020-0131-103016_047284_movie_t-1_augB1.jpg", "2020-0131-103016_047284_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial runs through a narrowed construction zone with cones and barricades creating two same-direction lanes on worn, patched pavement, and traffic moves slowly. A black hatchback ahead in the ego lane slows because traffic bunches farther ahead, directly constraining the ego car's pace. In the adjacent right lane, a white sedan travels slightly ahead at a similar low speed, remaining parallel to the ego path. Farther ahead, several cars queue within the corridor and brake intermittently. Pedestrians walk on the right sidewalk behind the barriers while construction machinery and materials line both sides, keeping the roadway confined.", "hazard_reasoning": "There is a black hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of the vehicle ahead."}
{"id": "train_08619", "split": "train", "clip_key": "titan_clip_41_000336_movie", "source": {"subset": "titan", "scenario": "clip_41", "frame": "000336"}, "frames": ["titan_clip_41_000336_movie_t-3.jpg", "titan_clip_41_000336_movie_t-2.jpg", "titan_clip_41_000336_movie_t-1.jpg", "titan_clip_41_000336_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with no lane markings and cobblestone pavement runs straight between tall buildings, and traffic is light with low speeds. Ahead in the ego path, a woman wearing black trousers and a grey top crosses from right to left directly in front of the car, occupying the lane. A white minivan stands stopped at the right curb facing the same direction, taking up part of the roadway and limiting clearance. On the left near the bollards, a man walks away from the camera along the roadway edge, staying close to the travel path. Bicycles and shop displays line the right side, further narrowing the corridor.", "hazard_reasoning": "There is a woman wearing a pair of black trousers, a grey top, crossing the road, in front of the ego car. Driver should slow down because the pedestrian is crossing directly ahead and may continue into the vehicle's path."}
{"id": "train_08620", "split": "train", "clip_key": "2020-0207-151349_066897_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "066897"}, "frames": ["2020-0207-151349_066897_movie_t-3.jpg", "2020-0207-151349_066897_movie_t-2.jpg", "2020-0207-151349_066897_movie_t-1.jpg", "2020-0207-151349_066897_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision with halted vehicle", "environment_perception": "An urban multi-lane arterial with smooth pavement runs between mid-rise buildings, with a painted chevron divider and guardrail on the right; traffic moves slowly in queues. Directly ahead, a black hatchback in the ego lane is stopped because of congestion ahead, holding the ego car. In the right adjacent lane, a small flatbed truck creeps forward, continuing straight past the chevron zone and edging ahead of the queue. Farther ahead, several cars line up under an elevated structure and flow intermittently. Overhead lane-use and direction signs show straight-through lanes and a right-turn option.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver needs to stop to avoid a rear-end collision with the stationary vehicle."}
{"id": "train_08621", "split": "train", "clip_key": "2020-0131-135401_002207_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "002207"}, "frames": ["2020-0131-135401_002207_movie_t-3.jpg", "2020-0131-135401_002207_movie_t-2.jpg", "2020-0131-135401_002207_movie_t-1.jpg", "2020-0131-135401_002207_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban two-way street has a single lane in each direction, a solid yellow centerline, smooth pavement, and light traffic. A large white box truck directly ahead in the ego's left-side travel lane is stopped, blocking the path and dictating the pace. A pedestrian on the left sidewalk by the shops walks away and remains clear of the roadway. The oncoming lane to the right stays empty along the visible block. A painted bicycle marking and low separators along the left edge constrain the usable lane, and no signals or posted speed signs are clearly visible.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane. Because the sedan is stopped directly ahead, you must stop to avoid a collision."}
{"id": "train_08622", "split": "train", "clip_key": "2020-0129-144857_048370_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "048370"}, "frames": ["2020-0129-144857_048370_movie_t-3.jpg", "2020-0129-144857_048370_movie_t-2.jpg", "2020-0129-144857_048370_movie_t-1.jpg", "2020-0129-144857_048370_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of turning truck", "environment_perception": "An urban multi-lane intersection unfolds under an elevated roadway with good pavement and slow, moderate traffic; a small raised concrete island separates the right edge of the ego lane. A white box truck directly ahead in the ego lane turns right through the junction at low speed, constraining the ego car. In the adjacent left lane, a silver van slightly ahead continues straight, passing the intersection alongside the truck. On the far right beyond the island, cars on the cross street move through the junction but remain outside the ego path. Traffic signals are present at the intersection.", "hazard_reasoning": "There is a white truck turning right in front of the ego car in the ego lane. The truck's turn may cause it to cut into your lane unexpectedly, requiring timely attention and adjustment."}
{"id": "train_08623", "split": "train", "clip_key": "2020-0205-103411_062704_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "062704"}, "frames": ["2020-0205-103411_062704_movie_t-3.jpg", "2020-0205-103411_062704_movie_t-2.jpg", "2020-0205-103411_062704_movie_t-1.jpg", "2020-0205-103411_062704_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the stopped truck", "environment_perception": "An urban multilane arterial with three lanes in each direction is divided by a low planted median; the pavement is smooth and traffic is light to moderate with steady flow. Ahead on the left side of the road, a white truck is stopped near the curb by the shopfronts, waiting to turn onto the road. Another small white truck follows behind it in the same stream, maintaining lane. Farther ahead, a dark box truck proceeds straight in the opposing flow. At the far left curb near shopfronts, a bicyclist is by the sidewalk and remains clear of the roadway. No salient signals or posted speeds are visible.", "hazard_reasoning": "There is a white truck stopped at the left side of the road because it is waiting to turn onto the ego car's road. Its stationary position may require you to adjust speed or change lanes if it initiates its turn, so remain vigilant."}
{"id": "train_08624", "split": "train", "clip_key": "2020-0225-102455_052029_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "052029"}, "frames": ["2020-0225-102455_052029_movie_t-3.jpg", "2020-0225-102455_052029_movie_t-2.jpg", "2020-0225-102455_052029_movie_t-1.jpg", "2020-0225-102455_052029_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs past mid-rise buildings; the asphalt is dry and smooth, and traffic is light to moderate. A silver van ahead in the ego lane drives away from the ego car, gradually increasing its gap and setting the immediate pace. In the left lane, a white minivan slightly ahead continues straight at a similar speed, remaining parallel and not entering the ego lane. Near the left curb, a cyclist rides forward along the edge, staying outside the travel lanes but close to the roadway. Farther ahead, a small motorcycle proceeds in the same direction. A fenced median on the right separates steady oncoming traffic.", "hazard_reasoning": "There is a silver van driving away from the ego car, in the ego lane. The leading van could slow down unexpectedly, so maintain a safe following distance by following the vehicle ahead."}
{"id": "train_08625", "split": "train", "clip_key": "titan_clip_862_000528_movie", "source": {"subset": "titan", "scenario": "clip_862", "frame": "000528"}, "frames": ["titan_clip_862_000528_movie_t-3.jpg", "titan_clip_862_000528_movie_t-2.jpg", "titan_clip_862_000528_movie_t-1.jpg", "titan_clip_862_000528_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the parked motorcycle.", "environment_perception": "An urban two-lane two-way street curves gently right, with a single center line, tight building fronts, and smooth asphalt; traffic flow is light. A white microvan ahead in the ego lane moves slowly through the bend and briefly eases off, setting the ego vehicle's pace. An oncoming car advances in the right lane around the same curve, staying behind the center line yet relevant because the roadway is narrow. A black motorcycle is parked on the left side by the storefronts, taking up curbside space and narrowing the pass. Several bicycles are racked along the right sidewalk but remain clear of the roadway.", "hazard_reasoning": "There is a black motorcycle parked on the left side of the road. It may obstruct the lane and require the driver to adjust their path, so the driver should carefully manoeuvre around it."}
{"id": "train_08626", "split": "train", "clip_key": "2020-0217-110854_074977_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "074977"}, "frames": ["2020-0217-110854_074977_movie_t-3.jpg", "2020-0217-110854_074977_movie_t-2.jpg", "2020-0217-110854_074977_movie_t-1.jpg", "2020-0217-110854_074977_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego vehicle's direction carries slow, queued traffic on dry, well-marked pavement near an intersection. A small white truck directly ahead in the ego lane is stopped for the red signal, holding the ego vehicle. To the left, a large truck is halted alongside in the neighboring lane, leaving little lateral space. Ahead-right, a white van waits in the adjacent lane within the same queue, limiting any chance to change lanes. An overhead traffic light is clearly red.", "hazard_reasoning": "There is a white truck stopped in the ego lane, because of the red traffic light. The driver should stop to avoid colliding with the halted vehicle and obey the red light."}
{"id": "train_08627", "split": "train", "clip_key": "titan_clip_20_000378_movie", "source": {"subset": "titan", "scenario": "clip_20", "frame": "000378"}, "frames": ["titan_clip_20_000378_movie_t-3.jpg", "titan_clip_20_000378_movie_t-2.jpg", "titan_clip_20_000378_movie_t-1.jpg", "titan_clip_20_000378_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban two-way street with one narrow lane per direction and no median runs between mid-rise buildings; the pavement is smooth and traffic is light with a few vehicles moving slowly ahead and occasional oncoming cars. A large box truck is stopped along the left side ahead in the ego lane, partially encroaching and constraining the usable path. A pedestrian appears from the left beside this truck and walks into the roadway, potentially entering the ego lane. On the right edge, a pedestrian carrying an umbrella walks toward the ego car along the curb and may step into the lane. A bicyclist rides ahead near the right curb in the same direction as the ego vehicle, keeping close to the sidewalk.", "hazard_reasoning": "A pedestrian carrying an umbrella is walking on the right side of the road, toward the ego car. The pedestrian may step into the vehicle's path, so the driver should manoeuvre carefully to avoid a collision."}
{"id": "train_08628", "split": "train", "clip_key": "2020-0227-153144_042498_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "042498"}, "frames": ["2020-0227-153144_042498_movie_t-3.jpg", "2020-0227-153144_042498_movie_t-2.jpg", "2020-0227-153144_042498_movie_t-1.jpg", "2020-0227-153144_042498_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way road with no physical median and smooth pavement carries moderate, steadily moving traffic. A white van directly ahead in the ego lane accelerates as traffic moves forward, setting the ego vehicle's pace. A gray van travels alongside in the adjacent left same-direction lane at a similar speed without drifting toward the ego lane. On the right side of the roadway, a white minivan approaches in the oncoming lane and continues straight, remaining separated by the center line. A no-parking sign is visible on the left, and no obstacles or work zones appear.", "hazard_reasoning": "There is a white van accelerating in the ego lane, because traffic is moving forward. Since the van ahead is moving, you should start moving to maintain safe traffic flow."}
{"id": "train_08629", "split": "train", "clip_key": "2020-0210-101957_024145_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "024145"}, "frames": ["2020-0210-101957_024145_movie_t-3.jpg", "2020-0210-101957_024145_movie_t-2.jpg", "2020-0210-101957_024145_movie_t-1.jpg", "2020-0210-101957_024145_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane arterial runs between hedges and mid-rise buildings, with dry, well-marked pavement and heavy, mostly stopped traffic in the same direction. A white scooter is directly ahead in the ego lane, stationary because of congestion and blocking the ego vehicle's path. Beyond it, a white van in the same lane remains stopped, further constraining progress. In the adjacent right lane, a black taxi beside the ego vehicle inches forward, reducing chances to change lanes. Farther ahead in that lane, small trucks queue and move slowly with the jam.", "hazard_reasoning": "There is a white scooter stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop immediately to avoid collision with the stopped scooter."}
{"id": "train_08630", "split": "train", "clip_key": "2020-0218-151547_003466_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "003466"}, "frames": ["2020-0218-151547_003466_movie_t-3.jpg", "2020-0218-151547_003466_movie_t-2.jpg", "2020-0218-151547_003466_movie_t-1.jpg", "2020-0218-151547_003466_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego direction runs between tall buildings, bordered by a concrete barrier on the right; the pavement is smooth and traffic is queued at a signalized intersection. A silver hatchback directly ahead in the ego lane is stopped for the red light and holds the ego vehicle. In the adjacent left lane, a white minivan slightly ahead also waits at the light, maintaining the queue beside the ego lane. Additional cars line up in the left lane without affecting the ego path. Overhead traffic lights show red and lane signs indicate straight travel.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, because of the red traffic light, in front of the ego car. Because the hatchback is stationary due to the red light ahead, the driver should stop to prevent a rear-end collision."}
{"id": "train_08631", "split": "train", "clip_key": "2020-0129-144857_046711_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "046711"}, "frames": ["2020-0129-144857_046711_movie_t-3.jpg", "2020-0129-144857_046711_movie_t-2.jpg", "2020-0129-144857_046711_movie_t-1.jpg", "2020-0129-144857_046711_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs under elevated expressways, approaching a signalized intersection. The ego vehicle travels with a metal guardrail divider on the right; the pavement appears dry and traffic is heavy near the stop. A silver truck directly ahead in the ego lane is stopped at the red light, holding the ego vehicle. To the left, several cars in the adjacent same-direction lane queue at the intersection and inch forward, limiting any lane change. On the right, a green-and-white city bus in a separated lane waits alongside near the intersection without moving toward the ego lane. Overhead traffic lights show red.", "hazard_reasoning": "There is a silver truck stopped in the ego lane, because of the red traffic light. Drivers should stop promptly to avoid colliding with the truck waiting at the red light."}
{"id": "train_08632", "split": "train", "clip_key": "2020-0225-102455_007239_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "007239"}, "frames": ["2020-0225-102455_007239_movie_t-3.jpg", "2020-0225-102455_007239_movie_t-2.jpg", "2020-0225-102455_007239_movie_t-1.jpg", "2020-0225-102455_007239_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van", "environment_perception": "An urban arterial curves gently right with a fence median on the right separating oncoming traffic; the pavement is dry and intact, and traffic is moderate. A large dump truck ahead in the ego lane travels steadily and sets the pace. A white van is parked on the left side of the road a short distance ahead, trimming shoulder space as the lane bends. Opposite-direction cars to the right move past behind the fence and remain separated from the ego path. An overhead circular sign indicates 50 km/h.", "hazard_reasoning": "There is a white van parked on the left side of the road. Parked vehicles can obstruct sightlines and may re-enter traffic unexpectedly, so the driver should stay alert under this situation."}
{"id": "train_08633", "split": "train", "clip_key": "2020-0218-103119_002857_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002857"}, "frames": ["2020-0218-103119_002857_movie_t-3.jpg", "2020-0218-103119_002857_movie_t-2.jpg", "2020-0218-103119_002857_movie_t-1.jpg", "2020-0218-103119_002857_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the minivan", "environment_perception": "An urban arterial with multiple lanes in each direction features a painted chevron median and smooth pavement; traffic is light to moderate and flows steadily. A white van ahead in the ego direction moves away in the left lane at a steady pace. To the right of the median, a white minivan in the oncoming right lane drives toward the ego car, remaining in its lane. A dark car draws alongside on the immediate left and edges forward in the adjacent same-direction lane, passing the ego vehicle.", "hazard_reasoning": "There is a white minivan driving toward the ego car, in the right lane. Yield to the approaching minivan to avoid a potential collision at the intersection."}
{"id": "train_08634", "split": "train", "clip_key": "titan_clip_874_000546_movie", "source": {"subset": "titan", "scenario": "clip_874", "frame": "000546"}, "frames": ["titan_clip_874_000546_movie_t-3.jpg", "titan_clip_874_000546_movie_t-2.jpg", "titan_clip_874_000546_movie_t-1.jpg", "titan_clip_874_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian in cycle lane", "environment_perception": "A narrow urban shopping street appears, a two-way road without a median, with a brick-paved center and smooth side strips; the surface is good and traffic is light with no immediate oncoming vehicles. A white car far ahead in the same direction proceeds steadily down the middle, loosely leading the flow. On the right ahead, a pedestrian wearing a white shirt and shorts walks away from the ego car along the cycling lane beside the storefronts, staying near the curb. At the left edge near a bakery, two pedestrians move toward the camera partly in the travel lane, potentially encroaching on the ego path. Bicycles and signboards line the right margin, narrowing the usable roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and shorts, walking along the right side of the road in the cycling lane, away from the ego car. The pedestrian's location in the cycling lane could lead to a sudden need to slow or steer, so the driver should be aware and ready to adjust speed.\\n"}
{"id": "train_08635", "split": "train", "clip_key": "titan_clip_1283_000042_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1283_000042_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1283_000042_movie_t-3_augB1.jpg", "titan_clip_1283_000042_movie_t-2_augB1.jpg", "titan_clip_1283_000042_movie_t-1_augB1.jpg", "titan_clip_1283_000042_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way road and no median shows dry pavement and light, slow traffic. Ahead on the right, a delivery truck is stopped at the curb with its rear doors open and tail lift and step extending into the roadway, reducing the available lane width. Two pedestrians, an adult wearing a cap and a child, walk away from the ego vehicle along the middle of the road because the truck blocks their path, occupying the ego lane. No oncoming vehicles are visible.", "hazard_reasoning": "There are two pedestrians, one a child and one wearing a cap, walking along the middle of the road, away from the ego car, because a truck is blocking their path. The truck forces them into the vehicle's lane, so the driver should slow down to avoid a collision."}
{"id": "train_08636", "split": "train", "clip_key": "2020-0205-152530_058845_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "058845"}, "frames": ["2020-0205-152530_058845_movie_t-3.jpg", "2020-0205-152530_058845_movie_t-2.jpg", "2020-0205-152530_058845_movie_t-1.jpg", "2020-0205-152530_058845_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multilane junction beneath an elevated expressway shows smooth asphalt and clear lane markings; traffic is light and paused at a signal. A blue flatbed truck with a crane is directly ahead in the ego lane, stopped for the red light and holding the ego vehicle. A silver box truck waits ahead-left in the adjacent lane by the curb, slightly in front of the ego car. On the right, a truck moves across the intersection from right to left on the cross street while our approach remains stopped. A metal guardrail lines the left edge of the roadway.", "hazard_reasoning": "There is a blue truck stopped in front of the ego car, because of a red traffic light. You should stop immediately to comply with the signal and avoid a collision under this situation."}
{"id": "train_08637", "split": "train", "clip_key": "2020-0203-154554_044889_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "044889"}, "frames": ["2020-0203-154554_044889_movie_t-3.jpg", "2020-0203-154554_044889_movie_t-2.jpg", "2020-0203-154554_044889_movie_t-1.jpg", "2020-0203-154554_044889_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "Inside a covered urban expressway, the ego vehicle proceeds on a smooth two-lane same-direction roadway bounded by guardrails, with heavy, slow traffic. A gray hatchback directly ahead in the ego lane slows in stop-and-go flow, constraining the ego car's speed. A white SUV slightly ahead in the adjacent right lane creeps forward in its lane and stays alongside, limiting an easy lane change. Farther ahead, a queue of cars including a small van compresses with frequent brake lights, keeping the overall pace sluggish.", "hazard_reasoning": "A gray hatchback is slowing in front of the ego car in the ego lane, because of traffic congestion. Slowing down will help maintain a safe following distance under these conditions."}
{"id": "train_08638", "split": "train", "clip_key": "titan_clip_657_000138_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_657_000138_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_657_000138_movie_t-3_augB1.jpg", "titan_clip_657_000138_movie_t-2_augB1.jpg", "titan_clip_657_000138_movie_t-1_augB1.jpg", "titan_clip_657_000138_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian crossing ahead", "environment_perception": "A narrow urban side street with no centerline runs between buildings; the pavement is dry and smooth and traffic is light. A large silver box truck is ahead at the right edge of the lane with its brake light on, partially blocking the path and slowing the ego-vehicle. A pedestrian wearing black pants crosses ahead from the right sidewalk to the left, in front of the ego-vehicle and passing by the front of the truck. Farther ahead, another pedestrian walks away along the left side of the roadway without entering the lane. Two orange cones sit on the left sidewalk near a doorway.", "hazard_reasoning": "There is a pedestrian wearing black pants and crossing the street, on the right side to the left side, in front of the ego-car. The driver should yield because the pedestrian is directly entering the vehicle's path, requiring a speed reduction to avoid a collision."}
{"id": "train_08639", "split": "train", "clip_key": "2020-0131-135401_037290_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "037290"}, "frames": ["2020-0131-135401_037290_movie_t-3.jpg", "2020-0131-135401_037290_movie_t-2.jpg", "2020-0131-135401_037290_movie_t-1.jpg", "2020-0131-135401_037290_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with two lanes in the ego direction, including a right-turn lane, approaches a signalized intersection on dry pavement, and overall traffic is light. A white hatchback directly ahead in the ego lane is stopped at the stop line because the signal is red, holding the ego vehicle. A small white truck on the cross street to the right proceeds across the intersection, and another car moves through in the distance. A pedestrian on the left sidewalk stands near the corner. Overhead traffic lights and a school?one warning sign are visible.", "hazard_reasoning": "A white hatchback is stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to avoid rear-ending the vehicle halted at a red signal."}
{"id": "train_08640", "split": "train", "clip_key": "2020-0226-101332_069237_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "069237"}, "frames": ["2020-0226-101332_069237_movie_t-3.jpg", "2020-0226-101332_069237_movie_t-2.jpg", "2020-0226-101332_069237_movie_t-1.jpg", "2020-0226-101332_069237_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane boulevard runs between tall buildings, separated from oncoming traffic by a hedge median; the pavement is smooth and traffic is moderately heavy and slow but begins to pick up. A silver van directly ahead in the ego lane accelerates as the light ahead is green, opening a growing gap. In the right lane by the median, another van continues straight slightly ahead at a steady pace, constraining a rightward lane change. On the left lane, a red taxi and a small hatchback travel alongside at low speed with tight spacing, limiting leftward movement.", "hazard_reasoning": "There is a silver van accelerating in the ego lane, in front of the ego car, because of a green traffic light. The van's acceleration indicates the signal has turned green, so you should start moving to maintain traffic flow."}
{"id": "train_08641", "split": "train", "clip_key": "titan_clip_1385_000240_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1385_000240_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1385_000240_movie_t-3_augB1.jpg", "titan_clip_1385_000240_movie_t-2_augB1.jpg", "titan_clip_1385_000240_movie_t-1_augB1.jpg", "titan_clip_1385_000240_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban commercial side street with a single narrow lane and no centerline runs past dense storefronts; the asphalt is worn but clear and there is no visible motor traffic ahead. A pedestrian in a white T-shirt and brown shorts carrying a handbag crosses from the left into the middle of the road ahead as they head toward a shop, occupying the ego path. Another pedestrian stands at the curb by the right-side storefront near the lane edge, stationary and close to the vehicle's path. A third person walks along the left edge of the roadway parallel to traffic without crossing.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and brown shorts, carrying a handbag, and crossing the street from the left side, in the middle of the road, because they are moving towards a shop. You should yield to allow the pedestrian to cross safely before proceeding."}
{"id": "train_08642", "split": "train", "clip_key": "2020-0131-135401_025059_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "025059"}, "frames": ["2020-0131-135401_025059_movie_t-3.jpg", "2020-0131-135401_025059_movie_t-2.jpg", "2020-0131-135401_025059_movie_t-1.jpg", "2020-0131-135401_025059_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the stopped van.", "environment_perception": "An urban multi-lane road approaches a signalized intersection beneath a pedestrian overpass, with smooth pavement and light traffic. The ego vehicle is in the left curb lane, where a silver van directly ahead is stopped, waiting to turn left and blocking the lane. In the adjacent through lane to the right, a white van continues straight through the intersection, passing the stopped vehicle. Farther ahead to the right, another car travels straight in the same direction. Signals hang under the footbridge, and traffic cones line a small curbside work area beside the overpass staircase.", "hazard_reasoning": "There is a silver van stopped in the ego lane in front of the ego car because it is waiting to turn left. The driver should stop to maintain a safe following distance and avoid rear-ending the stationary van."}
{"id": "train_08643", "split": "train", "clip_key": "2020-0203-114632_093780_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "093780"}, "frames": ["2020-0203-114632_093780_movie_t-3.jpg", "2020-0203-114632_093780_movie_t-2.jpg", "2020-0203-114632_093780_movie_t-1.jpg", "2020-0203-114632_093780_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane road runs under an elevated structure, with a fence-lined building on the right and hedges and a curb on the left; the pavement looks smooth and traffic is light, with both lanes flowing in the same direction. The ego car follows a small white van ahead in the ego lane, which steadily pulls away, accelerating as the lane in front of it remains clear. No other moving vehicles are close in either lane, so the van briefly sets the ego vehicle's pace before widening the gap. No signals or pedestrians are visible, and there are no obstacles along the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08644", "split": "train", "clip_key": "2020-0227-153144_010428_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "010428"}, "frames": ["2020-0227-153144_010428_movie_t-3.jpg", "2020-0227-153144_010428_movie_t-2.jpg", "2020-0227-153144_010428_movie_t-1.jpg", "2020-0227-153144_010428_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop for the red light ahead.", "environment_perception": "An urban four-lane arterial with two lanes in each direction runs straight, divided by a low metal fence; the pavement is clean and dry and traffic is moderate, easing toward an intersection. Ahead in the ego lane a white light truck slows for a red traffic light, forming the head of a short queue. Immediately in front, a black sedan also slows in the same lane behind the truck, constraining the ego vehicle's pace. On the far side of the median, light oncoming traffic proceeds smoothly while a bicyclist rides along the opposite sidewalk, well outside the ego path. A no-entry sign marks a side street on the left.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane, because of a red traffic light ahead. The driver should stop to avoid colliding with the slowed vehicle at the red light."}
{"id": "train_08645", "split": "train", "clip_key": "titan_clip_1010_000246_movie", "source": {"subset": "titan", "scenario": "clip_1010", "frame": "000246"}, "frames": ["titan_clip_1010_000246_movie_t-3.jpg", "titan_clip_1010_000246_movie_t-2.jpg", "titan_clip_1010_000246_movie_t-1.jpg", "titan_clip_1010_000246_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrians", "environment_perception": "An urban shopping street with a narrow single-lane carriageway and smooth pavement shows light vehicle flow but heavy pedestrian activity as the ego-vehicle advances slowly. On the right very near the camera, a woman with a shopping bag steps off the sidewalk into the lane, encroaching on the path. Two pedestrians wearing a red and a white T-shirt stand at the left curb close to the roadway and may enter the ego lane. Farther ahead, a pedestrian walks along the center of the lane in the same direction, constraining the vehicle's pace. Plastic cones and low railings line the right edge, narrowing the usable roadway.", "hazard_reasoning": "There are two pedestrians wearing a red and a white t-shirt, standing on the left side of the road. The driver should be aware of their presence since they may step into the roadway unexpectedly, requiring a controlled maneuver to maintain safety."}
{"id": "train_08646", "split": "train", "clip_key": "2020-0203-154554_038780_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "038780"}, "frames": ["2020-0203-154554_038780_movie_t-3.jpg", "2020-0203-154554_038780_movie_t-2.jpg", "2020-0203-154554_038780_movie_t-1.jpg", "2020-0203-154554_038780_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An elevated urban road with two same-direction lanes runs under a large overhead structure, bordered by concrete barriers and smooth pavement; traffic is moderate and compresses into a slow queue. Ahead in the left ego lane, a white truck slows because vehicles are backed up further ahead, and it constrains the ego car's speed. In the adjacent right lane, a silver van slightly ahead travels alongside and also reduces speed, remaining parallel to the ego path. Farther ahead in both lanes, several small cars bunch together and move slowly, sustaining the congestion. No traffic signals or speed signs are clearly visible, and the columns and barriers form a narrow corridor.", "hazard_reasoning": "There is a white truck slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead on the road. The driver needs to slow down to maintain a safe following distance and adapt to congested traffic conditions."}
{"id": "train_08647", "split": "train", "clip_key": "2020-0207-151349_028331_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "028331"}, "frames": ["2020-0207-151349_028331_movie_t-3.jpg", "2020-0207-151349_028331_movie_t-2.jpg", "2020-0207-151349_028331_movie_t-1.jpg", "2020-0207-151349_028331_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three same-direction lanes and a planted guardrail median to the left; the asphalt is dry under strong sun glare, and traffic flows at a moderate pace. A white box truck ahead in the ego lane proceeds straight and sets the ego car's pace as the signal ahead shows a green straight arrow. A white car in the adjacent right lane slightly ahead continues forward and pulls away without impeding the ego lane. Overhead signs indicate the rightmost lane is designated for right turns at the upcoming intersection.", "hazard_reasoning": "There is a white truck driving in the ego lane in front of the ego car, because of the green traffic arrow light. The truck may follow the green arrow turn and could change speed or direction, so you should follow it to navigate safely."}
{"id": "train_08648", "split": "train", "clip_key": "titan_clip_274_000162_movie", "source": {"subset": "titan", "scenario": "clip_274", "frame": "000162"}, "frames": ["titan_clip_274_000162_movie_t-3.jpg", "titan_clip_274_000162_movie_t-2.jpg", "titan_clip_274_000162_movie_t-1.jpg", "titan_clip_274_000162_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "A quiet urban back street with a single narrow two-way lane and no divider runs between low buildings; the asphalt looks smooth and dry, and traffic is light with no moving vehicles visible. Ahead on the left, a gray van is parked for unloading, occupying the curbside and slightly narrowing the available lane. No other vehicles or pedestrians appear nearby, and there is no oncoming traffic in sight. A convex safety mirror stands on the right at a small side junction, while dense foliage on the left encroaches toward the roadway.", "hazard_reasoning": "There is a gray van parked on the left side of the road because it is being unloaded. The unloading van partially obstructs the roadway, so the driver must carefully manoeuvre around it to avoid a collision."}
{"id": "train_08649", "split": "train", "clip_key": "2020-0220-151845_025302_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "025302"}, "frames": ["2020-0220-151845_025302_movie_t-3.jpg", "2020-0220-151845_025302_movie_t-2.jpg", "2020-0220-151845_025302_movie_t-1.jpg", "2020-0220-151845_025302_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial runs under an elevated expressway, the pavement dry and intact, and traffic is heavy and stop-and-go. A black van directly ahead in the ego lane is stopped because of congestion and blocks the path. To the left, a small light truck with a covered bed waits slightly ahead in the adjacent lane, inching forward with the queue. To the right, a red hatchback and a silver kei car in the neighboring lane creep forward beside the ego vehicle as the line compresses. Concrete pillars and the flyover create a narrow corridor that shortens the forward view.", "hazard_reasoning": "There is a black SUV stopped in the ego lane because of traffic congestion ahead. The driver should stop to avoid colliding with the halted vehicle in front."}
{"id": "train_08650", "split": "train", "clip_key": "titan_clip_797_000426_movie", "source": {"subset": "titan", "scenario": "clip_797", "frame": "000426"}, "frames": ["titan_clip_797_000426_movie_t-3.jpg", "titan_clip_797_000426_movie_t-2.jpg", "titan_clip_797_000426_movie_t-1.jpg", "titan_clip_797_000426_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop to yield to pedestrian.", "environment_perception": "An urban residential street with one lane each way is shown, bordered by white guardrails and a zebra crossing; pavement is smooth and traffic is light with no oncoming vehicles. At the crosswalk ahead, a pedestrian in a brown shirt and brown pants crosses from the left to the right in front of the ego lane, moving steadily and controlling the ego vehicle's pace. Farther ahead in the same direction, a small white van stands stopped along the left curb. A blue pedestrian crossing sign is posted on the left approach to the crosswalk.", "hazard_reasoning": "There is a pedestrian in a brown shirt and brown pants crossing the street at the pedestrian crossing from the left side to the right side. The driver must stop to yield to the pedestrian and avoid a collision."}
{"id": "train_08651", "split": "train", "clip_key": "2020-0205-152530_002449_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "002449"}, "frames": ["2020-0205-152530_002449_movie_t-3.jpg", "2020-0205-152530_002449_movie_t-2.jpg", "2020-0205-152530_002449_movie_t-1.jpg", "2020-0205-152530_002449_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around parked van", "environment_perception": "An urban two-way road with two lanes and no median runs through low-rise buildings; the pavement looks smooth and traffic is light. A white minivan approaches in the oncoming lane to the right and continues straight past the ego vehicle. A white van is parked along the left-side bay ahead near the curb, slightly narrowing the space as the ego passes. Farther ahead in the ego lane, a dark truck moves in the same direction at a steady pace, influencing the ego vehicle's speed. An overhead circular sign displays 40.", "hazard_reasoning": "There is a white van parked on the left side of the road. The parked van reduces available lane width, requiring careful manoeuvre around it to avoid collision."}
{"id": "train_08652", "split": "train", "clip_key": "2020-0131-135401_001712_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "001712"}, "frames": ["2020-0131-135401_001712_movie_t-3.jpg", "2020-0131-135401_001712_movie_t-2.jpg", "2020-0131-135401_001712_movie_t-1.jpg", "2020-0131-135401_001712_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road with no median and smooth pavement carries light traffic as the ego car proceeds in the left lane toward a signalized junction showing red. A white box truck ahead in the ego lane slows for the red light and sets the pace of the ego vehicle. On the left sidewalk near the curb, a pedestrian carrying bags walks forward parallel to traffic but stays on the sidewalk. On the right sidewalk farther ahead, three pedestrians stand by a storefront, stationary. A no-parking sign on a pole to the left is visible.", "hazard_reasoning": "There is a white truck is slowing in front of the ego car in the ego lane, because of red traffic light. The truck will come to a complete stop at the red light, so you should stop to avoid a rear-end collision."}
{"id": "train_08653", "split": "train", "clip_key": "2020-0220-151845_014417_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-151845_014417_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-151845_014417_movie_t-3_augB1.jpg", "2020-0220-151845_014417_movie_t-2_augB1.jpg", "2020-0220-151845_014417_movie_t-1_augB1.jpg", "2020-0220-151845_014417_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban arterial with smooth pavement and red bus-lane sections has no physical median, and traffic is slow and heavy near an intersection beneath a pedestrian overpass. The ego vehicle travels in the leftmost lane with same-direction lanes to the right. Directly ahead in the ego lane, a black SUV slows because congestion extends forward, limiting the ego car's pace. In the adjacent right lane, a silver van runs slightly ahead and continues straight, restricting an easy lane change. Farther ahead in the right lane, a gray hatchback also slows into the queue, reinforcing the backup. Along the left sidewalk at the crosswalk, a large crowd of pedestrians waits behind the curb without entering the roadway.", "hazard_reasoning": "There is a black SUV slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to match the reduced speed and maintain a safe following distance to avoid a collision."}
{"id": "train_08654", "split": "train", "clip_key": "2020-0127-132751_030037_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "030037"}, "frames": ["2020-0127-132751_030037_movie_t-3.jpg", "2020-0127-132751_030037_movie_t-2.jpg", "2020-0127-132751_030037_movie_t-1.jpg", "2020-0127-132751_030037_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane per direction runs between mid-rise buildings, with no median and smooth pavement; traffic is light. A white box truck is stopped directly ahead in the ego lane, blocking the path and forcing the ego vehicle to wait. Farther ahead in the same direction, a darker truck proceeds away at low speed. The opposite-direction lane to the right is clear of oncoming traffic at this moment. A metal fence lines the right edge and the shoulder is narrow, leaving little room to pass the stopped vehicle.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The driver must stop to avoid a rear-end collision with the stationary truck."}
{"id": "train_08655", "split": "train", "clip_key": "2020-0129-105040_060235_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "060235"}, "frames": ["2020-0129-105040_060235_movie_t-3.jpg", "2020-0129-105040_060235_movie_t-2.jpg", "2020-0129-105040_060235_movie_t-1.jpg", "2020-0129-105040_060235_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop immediately for the crossing pedestrian.", "environment_perception": "An urban two-way neighborhood street with a single narrow lane each direction and red-painted shoulders curves gently right; the pavement looks clean and traffic appears light with no vehicles close by. Directly ahead, a pedestrian in a red coat crosses left to right on the zebra crossing while pushing a walker, moving through the ego lane and blocking the path. On the left near the curb, two pedestrians pause by the crosswalk and watch, possibly waiting to cross after. Farther ahead along the left sidewalk, another person walks away from the camera without entering the road. Orange cones line the edge by the right-hand storefront but remain off the carriageway.", "hazard_reasoning": "There is a pedestrian wearing a red coat, crossing the street at a pedestrian crossing, from the left side to the right side. Stop immediately for the crossing pedestrian."}
{"id": "train_08656", "split": "train", "clip_key": "2020-0131-135401_037978_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "037978"}, "frames": ["2020-0131-135401_037978_movie_t-3.jpg", "2020-0131-135401_037978_movie_t-2.jpg", "2020-0131-135401_037978_movie_t-1.jpg", "2020-0131-135401_037978_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with a single lane each direction and no median approaches a signalized intersection; the asphalt is smooth and traffic is light. The signal ahead shows red, holding the scene. A white hatchback directly ahead in the ego lane is stopped for the red light at the intersection, constraining the ego vehicle. An oncoming white truck in the right-side lane proceeds straight through the junction, remaining separated by the center line and posing no conflict. Two pedestrians on the left sidewalk near the crosswalk walk toward the intersection without stepping into the roadway. A yellow school route sign and a no-parking sign are posted on a roadside pole at the corner.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane because of the red traffic light ahead at the intersection. The driver should stop to avoid a rear-end collision and comply with the red signal."}
{"id": "train_08657", "split": "train", "clip_key": "2020-0217-110854_035063_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "035063"}, "frames": ["2020-0217-110854_035063_movie_t-3.jpg", "2020-0217-110854_035063_movie_t-2.jpg", "2020-0217-110854_035063_movie_t-1.jpg", "2020-0217-110854_035063_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A busy urban arterial with three same-direction lanes runs between tall buildings; the pavement is dry and smooth, and traffic is heavy, inching toward a signalized intersection. A silver hatchback directly ahead in the ego lane remains stopped because the traffic light ahead is red, holding the ego vehicle in place. A large coach bus in the lane to the right is stopped alongside and slightly ahead, narrowing the right side and pacing the queue. In the left lane, a silver van a little forward creeps ahead in slow traffic, preventing an immediate move left. Additional buses wait near the right curb.", "hazard_reasoning": "There is a silver hatchback stopped in the ego lane, in front fo the ego car, because of the red traffic light ahead. The driver must stop to maintain a safe following distance and comply with the red signal."}
{"id": "train_08658", "split": "train", "clip_key": "2020-0210-101957_006547_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "006547"}, "frames": ["2020-0210-101957_006547_movie_t-3.jpg", "2020-0210-101957_006547_movie_t-2.jpg", "2020-0210-101957_006547_movie_t-1.jpg", "2020-0210-101957_006547_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane in each direction runs between shops and apartments, divided by a yellow centerline on smooth pavement; traffic is slow and intermittent near a signalized intersection ahead. A green sedan just ahead in the ego lane is stopped because of congestion, directly constraining the ego vehicle. Farther ahead in the same lane, a white van inches forward with the queue toward the junction, contributing to the delay. In the oncoming lane, another white van approaches and passes steadily within its lane without affecting the ego path. Railings line the sidewalks, and no obstacles intrude into the roadway.", "hazard_reasoning": "There is a green sedan stopped in front of the ego car in the ego lane due to traffic congestion. The driver should stop to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_08659", "split": "train", "clip_key": "titan_clip_41_000480_movie", "source": {"subset": "titan", "scenario": "clip_41", "frame": "000480"}, "frames": ["titan_clip_41_000480_movie_t-3.jpg", "titan_clip_41_000480_movie_t-2.jpg", "titan_clip_41_000480_movie_t-1.jpg", "titan_clip_41_000480_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban shopping street with cobblestone pavement functions as a single shared lane with no center line, and the ego-car creeps forward amid very light vehicle flow but many pedestrians. Ahead in the middle distance, a woman in a yellow dress carrying a handbag crosses from right to left toward the ego vehicle's path, briefly constraining its pace. Farther ahead, several pedestrians walk along the middle of the lane in the same direction as the ego car and remain in its path. On the left near the curb, another pedestrian steps toward the roadway before continuing alongside the shops, creating minor side conflict. No traffic signals or posted speeds are visible. Parked bicycles and freestanding shop boards line the right side, narrowing the usable width.", "hazard_reasoning": "There is a woman wearing a yellow dress, carrying a handbag, and crossing in the middle of the street from the right side to the left side towards the ego-car. The pedestrian is stepping into the vehicle's path, so the driver should manoeuvre carefully to avoid collision."}
{"id": "train_08660", "split": "train", "clip_key": "titan_clip_1274_000282_movie", "source": {"subset": "titan", "scenario": "clip_1274", "frame": "000282"}, "frames": ["titan_clip_1274_000282_movie_t-3.jpg", "titan_clip_1274_000282_movie_t-2.jpg", "titan_clip_1274_000282_movie_t-1.jpg", "titan_clip_1274_000282_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban back street with a single narrow two-way lane has smooth pavement and light traffic, with parked vehicles lining both sides and no divider. A small white van ahead in the ego lane rolls slowly away near the center, constraining the ego car's pace. On the right side ahead, a pedestrian in a white shirt and black pants walks toward the ego car along the curb and may edge into the lane. Farther ahead near the middle, another person walks away from the camera but remains clear of the path. A bicycle and additional parked cars at the left curb further narrow the corridor.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants in front of the ego car, walking towards the ego car, to the right side. The pedestrian may step into your lane unexpectedly, so you should be aware of their presence."}
{"id": "train_08661", "split": "train", "clip_key": "2020-0206-101736_002507_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "002507"}, "frames": ["2020-0206-101736_002507_movie_t-3.jpg", "2020-0206-101736_002507_movie_t-2.jpg", "2020-0206-101736_002507_movie_t-1.jpg", "2020-0206-101736_002507_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street passes under a railway overpass on a two-way road without a median; the pavement looks worn but usable and traffic is moderate with a short queue visible ahead in the bright open section. A small tan hatchback directly ahead in the ego lane slows toward the queue, effectively setting the ego car's pace because of congestion ahead. An oncoming black taxi approaches on the right in its own lane and continues straight past the camera without deviating. Pedestrians gather at the edges of the crosswalk on both sides, with one on the right stepping forward as if to cross and potentially entering the ego lane.", "hazard_reasoning": "There is a red sedan slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance due to the congestion."}
{"id": "train_08662", "split": "train", "clip_key": "titan_clip_938_000528_movie", "source": {"subset": "titan", "scenario": "clip_938", "frame": "000528"}, "frames": ["titan_clip_938_000528_movie_t-3.jpg", "titan_clip_938_000528_movie_t-2.jpg", "titan_clip_938_000528_movie_t-1.jpg", "titan_clip_938_000528_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian", "environment_perception": "An urban alley-like two-way street with a single narrow lane and no median runs past closed shopfronts; the pavement is worn but intact, and traffic is light with no same-direction vehicles visible. A cyclist approaches from ahead along the opposing lane near the right curb, riding steadily toward the camera and taking much of the available width, constraining the ego vehicle's path. A pedestrian on the near right walks alongside vending machines close to the curb, parallel to traffic and not crossing. Farther ahead on the left edge, another person stands by a storefront near the roadway. No traffic lights or notable signs are in view.", "hazard_reasoning": "There is a pedestrian wearing a plaid shirt, crossing the street in front of the ego car, from the left side to the right side. The pedestrian is entering the vehicle's path and poses a collision risk, so the driver should yield to allow safe passage."}
{"id": "train_08663", "split": "train", "clip_key": "titan_clip_248_000048_movie", "source": {"subset": "titan", "scenario": "clip_248", "frame": "000048"}, "frames": ["titan_clip_248_000048_movie_t-3.jpg", "titan_clip_248_000048_movie_t-2.jpg", "titan_clip_248_000048_movie_t-1.jpg", "titan_clip_248_000048_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of the pedestrian", "environment_perception": "A narrow urban two-way street with no centerline runs between low-rise buildings, and the pavement looks smooth. Traffic is light with no moving vehicles, and the carriageway is partly narrowed by objects at the curbs. On the right edge ahead, a pedestrian in a white T-shirt walks toward the ego car in the roadway because there is no sidewalk, and they may step into the ego path. Farther ahead near the middle of the lane, another pedestrian in dark clothing also walks toward the ego, constraining the available space. A white van is parked at the near right and bicycles and a van sit at the left frontage, further squeezing the lane.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, walking on the right side of the road, towards the ego car, because there is no sidewalk. The pedestrian may enter the vehicle's path unexpectedly, so the driver should be aware of their presence."}
{"id": "train_08664", "split": "train", "clip_key": "titan_clip_1277_000546_movie", "source": {"subset": "titan", "scenario": "clip_1277", "frame": "000546"}, "frames": ["titan_clip_1277_000546_movie_t-3.jpg", "titan_clip_1277_000546_movie_t-2.jpg", "titan_clip_1277_000546_movie_t-1.jpg", "titan_clip_1277_000546_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrians", "environment_perception": "A narrow two-way urban street lined with buildings has no dedicated sidewalk, the smooth pavement is dry, and traffic is light with no moving vehicles. Two pedestrians are ahead in the ego lane, one along the left edge and one along the right, both walking away from the ego car because there is no sidewalk, and they occupy the path so the car proceeds at their pace. Farther ahead near the intersection, a cyclist moves slowly near the center and may drift into the ego lane. A distant pedestrian crosses the crosswalk ahead from left to right. An upcoming intersection shows a red triangular stop sign with the large stop marking \"止まれ\" on the road.", "hazard_reasoning": "There are two males pedestrians, both in front of the ego-car, in the ego lane, one on the left side of the street, and one on the right side of the street, walking away from the ego-car, because there is no sidewalk. The driver should manoeuvre carefully around these pedestrians to avoid collision since they are walking in the driving lane."}
{"id": "train_08665", "split": "train", "clip_key": "2020-0214-145407_011876_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "011876"}, "frames": ["2020-0214-145407_011876_movie_t-3.jpg", "2020-0214-145407_011876_movie_t-2.jpg", "2020-0214-145407_011876_movie_t-1.jpg", "2020-0214-145407_011876_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with a signalized intersection and no median is shown, the pavement wet and traffic moderate as vehicles begin moving. A black sedan directly ahead in the ego lane accelerates from the stop line as the light turns green, increasing the gap to the camera car. On the right side, oncoming vehicles including a white van proceed through the intersection toward the camera in their lanes. Pedestrians on the left sidewalk wait by storefronts near the crosswalk while traffic flows. Cones, barricades, and work equipment line the opposite curb, narrowing that side of the street.", "hazard_reasoning": "There's a black sedan that is accelerating ahead of the ego-car, in the ego-car lane, because the traffic lights have changed. You should follow the vehicle ahead to respond to the changed signal and maintain a safe distance."}
{"id": "train_08666", "split": "train", "clip_key": "2020-0228-102841_054458_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_054458_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_054458_movie_t-3_augB1.jpg", "2020-0228-102841_054458_movie_t-2_augB1.jpg", "2020-0228-102841_054458_movie_t-1_augB1.jpg", "2020-0228-102841_054458_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane intersection under an elevated roadway has smooth pavement and no median, with moderate cross traffic as the ego car waits at the stop line. A cyclist wearing a brown jacket and white shoes rides from the left across the near crosswalk directly in front of the ego vehicle, continuing to the right and briefly blocking its path. Ahead in the intersection a small silver van moves right to left across the ego's lane as it clears the crossing, further delaying any start. On the far side, a line of oncoming cars stand in their lane at the light. A pedestrian signal on the left shows red even as the cyclist proceeds.", "hazard_reasoning": "There is a cyclist wearing a brown jacket and white shoes, cycling across in a crosswalk, in front of the ego-car. The driver needs to stop immediately to avoid colliding with the cyclist crossing ahead."}
{"id": "train_08667", "split": "train", "clip_key": "2020-0228-102841_021030_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "021030"}, "frames": ["2020-0228-102841_021030_movie_t-3.jpg", "2020-0228-102841_021030_movie_t-2.jpg", "2020-0228-102841_021030_movie_t-1.jpg", "2020-0228-102841_021030_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "A wide urban arterial meets a large intersection with multiple lanes per direction and smooth pavement, and traffic in the ego direction is light. A black motorcycle ahead in the ego lane moves away from the ego car through the junction, keeping the path clear. A white sedan in the lane to the left proceeds straight slightly ahead of the ego vehicle at a similar pace. Oncoming traffic in the right-side lanes across the intersection appears stopped near the far crosswalk. A line of trucks and cars stands along the curb on the far right beyond the junction, narrowing the curbside lane.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane, away from the ego car, because of the green arrow lights. The driver should follow the vehicle ahead as it turns with the green arrow to maintain alignment and safe distance."}
{"id": "train_08668", "split": "train", "clip_key": "2020-0131-135401_028260_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "028260"}, "frames": ["2020-0131-135401_028260_movie_t-3.jpg", "2020-0131-135401_028260_movie_t-2.jpg", "2020-0131-135401_028260_movie_t-1.jpg", "2020-0131-135401_028260_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked vehicle ahead.", "environment_perception": "An urban multi-lane two-way road with a painted hatch median and smooth pavement carries light, steady traffic. A white car ahead in the ego lane cruises at a constant speed and currently sets the pace. Farther ahead, a black SUV is parked in the left lane in front of the ego-car, creating an obstruction within the ego path. On the right side of the roadway, in the oncoming lanes, two trucks are stopped at the curb and remain outside the ego lane. Sparse oncoming vehicles pass to the right without affecting the ego vehicle.", "hazard_reasoning": "There is a black SUV parked in the left lane, in front of the ego-car. The parked SUV blocks the driving lane and could require the driver to adjust speed or change lanes unexpectedly, so the driver should be aware of its presence."}
{"id": "train_08669", "split": "train", "clip_key": "2020-0214-102601_021380_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "021380"}, "frames": ["2020-0214-102601_021380_movie_t-3.jpg", "2020-0214-102601_021380_movie_t-2.jpg", "2020-0214-102601_021380_movie_t-1.jpg", "2020-0214-102601_021380_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban road curves left with smooth pavement and a concrete median separating an adjacent carriageway on the right; traffic appears light to moderate. A blue truck directly ahead in the ego lane starts moving as the signal turns green, setting the pace for the ego vehicle. On the parallel roadway to the right, a small car proceeds forward behind the barrier and remains irrelevant to the ego lane. Farther ahead, several cars continue through the junction while the ego lane stays single-file.", "hazard_reasoning": "There is a blue truck starting to move in the ego lane, in front of the ego car, because of a green traffic light. You should start moving now to follow the green signal and maintain safe traffic flow."}
{"id": "train_08670", "split": "train", "clip_key": "titan_clip_296_000552_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_296_000552_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_296_000552_movie_t-3_augB1.jpg", "titan_clip_296_000552_movie_t-2_augB1.jpg", "titan_clip_296_000552_movie_t-1_augB1.jpg", "titan_clip_296_000552_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban residential street with no median runs between closely spaced buildings; the asphalt is smooth and traffic is light with no moving vehicles visible. A dark van stands ahead along the left curb, protruding slightly into the ego lane and constraining the available width as the car proceeds straight. Several bicycles are parked along storefronts on the left, and an open garage and recessed driveways line the right. No traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, walking in the ego lane, on the left side of the road, away from the ego car. Driver should carefully manoeuvre around the pedestrian to avoid a collision given their position in the ego lane."}
{"id": "train_08671", "split": "train", "clip_key": "2020-0129-105040_100597_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "100597"}, "frames": ["2020-0129-105040_100597_movie_t-3.jpg", "2020-0129-105040_100597_movie_t-2.jpg", "2020-0129-105040_100597_movie_t-1.jpg", "2020-0129-105040_100597_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs along a planted curb on the right and a guardrail separating opposite traffic on the left; pavement is clean and traffic becomes heavy near an intersection ahead. A white mini truck is stopped directly ahead in the ego lane because of congestion, holding the ego car in place. In the adjacent right lane a small white truck slightly farther ahead rolls slowly toward the queue, merging into the backup and limiting opportunities to pass. To the left beyond the guardrail an oncoming white van approaches in its lane, remaining separated from the ego path. Overhead blue guide signs and signal gantries span the roadway near the queued junction.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to safely respond to the stopped vehicle and prevent a collision in this congested traffic."}
{"id": "train_08672", "split": "train", "clip_key": "titan_clip_658_000228_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_658_000228_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_658_000228_movie_t-3_augB1.jpg", "titan_clip_658_000228_movie_t-2_augB1.jpg", "titan_clip_658_000228_movie_t-1_augB1.jpg", "titan_clip_658_000228_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way road without a marked centerline runs between buildings and trees; the asphalt looks smooth and traffic is light, with parked vehicles creating a brief pinch point. Two pedestrians wearing shorts walk away from the camera in the middle of the road ahead, moving along the ego path and potentially constraining its pace. A white work van is stopped at the left curb just ahead with its rear protruding into the lane, narrowing the passage. On the right, a silver minivan stands at the curb facing the camera and slightly encroaches into the roadway, shaping a tight gap between it and the left van. Cones and red-white guard rails line the edges.", "hazard_reasoning": "There are two pedestrians wearing shorts, walking in the middle of the road, away from the ego car. These pedestrians pose a risk of entering the vehicle's path, so the driver should slow down to ensure safety."}
{"id": "train_08673", "split": "train", "clip_key": "titan_clip_604_000060_movie", "source": {"subset": "titan", "scenario": "clip_604", "frame": "000060"}, "frames": ["titan_clip_604_000060_movie_t-3.jpg", "titan_clip_604_000060_movie_t-2.jpg", "titan_clip_604_000060_movie_t-1.jpg", "titan_clip_604_000060_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban intersection leads into a narrow two-way street with zebra crosswalks and an overhead signal; the pavement is smooth and traffic is light with no moving vehicles. On the right side of the intersection, a man wearing beige work clothes pushes a green bin from the sidewalk onto the crosswalk toward the ego vehicle, moving slowly and likely to enter the ego lane. At the same corner, another pedestrian in dark clothing stands near the curb, waiting without stepping into the roadway. A black van is stopped along the far-right curb just beyond the crosswalk, and several scooters are parked on the left sidewalk, slightly constraining visibility at the entry.", "hazard_reasoning": "There is a man wearing beige work clothes and pushing a green bin towards the ego car, in the right side of the intersection. The man may enter the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_08674", "split": "train", "clip_key": "2020-0129-144857_036174_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "036174"}, "frames": ["2020-0129-144857_036174_movie_t-3.jpg", "2020-0129-144857_036174_movie_t-2.jpg", "2020-0129-144857_036174_movie_t-1.jpg", "2020-0129-144857_036174_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs beneath an elevated structure, with two same-direction lanes and a guardrail median separating oncoming traffic to the right; the dry pavement carries heavy, mostly stopped flow near an intersection. Directly ahead in the ego lane, a black SUV is stopped with brake lights because congestion at the intersection blocks the way, holding the ego vehicle. Farther ahead in the same lane, a large box truck is also stationary, extending the queue and limiting forward visibility. In the lane to the left, a white hatchback slightly ahead creeps forward alongside, constraining lane-change options. Overhead signals are visible while the line remains halted.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car because of traffic congestion ahead at the intersection. The driver should stop to avoid a rear-end collision given the sudden halt."}
{"id": "train_08675", "split": "train", "clip_key": "2020-0131-103016_084215_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "084215"}, "frames": ["2020-0131-103016_084215_movie_t-3.jpg", "2020-0131-103016_084215_movie_t-2.jpg", "2020-0131-103016_084215_movie_t-1.jpg", "2020-0131-103016_084215_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and no physical median shows worn but intact pavement and heavy, stop-and-go traffic. Directly ahead in the ego lane a small white van is stopped because of congestion, holding the ego vehicle in the queue. In the left lane ahead, a green city bus inches forward alongside, limiting visibility and opportunities to change lanes. In the right lane slightly ahead, a white cargo van waits in line with minimal gap, further constraining maneuvering space. A station structure and fenced works line the left side of the road while the queue stretches toward distant buildings.", "hazard_reasoning": "There is a white van stopped in the ego lane because of traffic congestion ahead. The stopped van signals upstream congestion and requires you to stop to avoid a rear-end collision."}
{"id": "train_08676", "split": "train", "clip_key": "titan_clip_336_000990_movie", "source": {"subset": "titan", "scenario": "clip_336", "frame": "000990"}, "frames": ["titan_clip_336_000990_movie_t-3.jpg", "titan_clip_336_000990_movie_t-2.jpg", "titan_clip_336_000990_movie_t-1.jpg", "titan_clip_336_000990_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian on your left", "environment_perception": "A narrow urban shopping alley with a single shared lane and brick paving has no markings or divider, and traffic is limited to light pedestrian flow with no other vehicles. On the left side, a pedestrian wearing a black backpack walks away from the ego car along the shopfronts, keeping to the edge. At the near right, a woman carrying a bag walks toward the camera along the roadside and drifts slightly toward the path. Farther ahead, several pedestrians move in both directions in the middle of the alley, influencing the pace. Freestanding signboards and a covered object by a storefront narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a black backpack, walking away from the ego car, on the left side of the road. The pedestrian may unexpectedly change direction or step into the vehicle's path, so the driver should be aware to prevent a collision."}
{"id": "train_08677", "split": "train", "clip_key": "titan_clip_648_000492_movie", "source": {"subset": "titan", "scenario": "clip_648", "frame": "000492"}, "frames": ["titan_clip_648_000492_movie_t-3.jpg", "titan_clip_648_000492_movie_t-2.jpg", "titan_clip_648_000492_movie_t-1.jpg", "titan_clip_648_000492_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban residential street is shown, a very narrow two-way road with edge lines and no centerline, smooth pavement, and light traffic throughout. A cyclist in a brown T-shirt rides toward the camera from ahead in the middle of the roadway, approaching the ego lane and likely constraining its path. A bicycle is parked at the left curb beside bushes, remaining stationary and outside the travel lane. On the right, a roadside construction area bordered by cones and fencing reduces shoulder space but does not intrude into the carriageway. Buildings and utility poles line both sides and no signals or posted speeds are visible.", "hazard_reasoning": "There is a cyclist wearing a brown t-shirt, cycling in the middle of the road, towards the ego car. The driver should slow down to maintain a safe distance and avoid a potential collision with the cyclist."}
{"id": "train_08678", "split": "train", "clip_key": "2020-0205-103411_003870_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "003870"}, "frames": ["2020-0205-103411_003870_movie_t-3.jpg", "2020-0205-103411_003870_movie_t-2.jpg", "2020-0205-103411_003870_movie_t-1.jpg", "2020-0205-103411_003870_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A busy urban, signalized multi-leg intersection fills the view, with wide zebra and diagonal crosswalks on smooth asphalt and no median; traffic flow is light. At the near right curb, a pedestrian wearing black pants and a backpack looks at a phone and waits to cross from right to left, potentially entering the ego lane. Ahead across the junction, a large group of pedestrians stands at the corners, with a few beginning to step into the marked crosswalks and likely to influence the ego vehicle's movement through the intersection. On the left, a small white car near the corner moves slowly at the edge of the intersection without impeding the ego vehicle.", "hazard_reasoning": "There is a pedestrian looking into their phone, wearing black pants, carrying a backpack, and waiting to cross the street from the right side to the left side of the intersection. They are distracted and may enter the crosswalk without noticing traffic, so you should stop to avoid a collision."}
{"id": "train_08679", "split": "train", "clip_key": "titan_clip_642_000030_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_642_000030_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_642_000030_movie_t-3_augB1.jpg", "titan_clip_642_000030_movie_t-2_augB1.jpg", "titan_clip_642_000030_movie_t-1_augB1.jpg", "titan_clip_642_000030_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of crossing pedestrian ahead", "environment_perception": "An urban neighborhood side street with a smooth, narrow two-way carriageway has light traffic as the ego vehicle approaches a cross intersection. A red stop sign on the right and the large STOP marking on the pavement are visible ahead. Along the right shoulder, a small truck is stopped with its bed open for unloading, encroaching slightly into the ego lane and constraining the approach. In front of it, a pedestrian wearing black pants pushes a handcart from the left curb to the right, crossing the roadway because the truck is being unloaded on the right shoulder and briefly occupying the ego lane. Another person stands at the left curb near storefront signs, waiting by the sidewalk.", "hazard_reasoning": "There is a pedestrian wearing black pants, pushing a handcart, and crossing the street, from the left to the right side, because of the truck being unloaded on the right shoulder. Because the unloading truck obstructs sight lines, the pedestrian may enter your path unexpectedly, so be aware of crossing pedestrian ahead."}
{"id": "train_08680", "split": "train", "clip_key": "titan_clip_60_000456_movie", "source": {"subset": "titan", "scenario": "clip_60", "frame": "000456"}, "frames": ["titan_clip_60_000456_movie_t-3.jpg", "titan_clip_60_000456_movie_t-2.jpg", "titan_clip_60_000456_movie_t-1.jpg", "titan_clip_60_000456_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban street with a single shared lane and no median appears dry and slightly worn, and traffic is light with no moving vehicles ahead. On the left close to the ego lane, a woman in a white jacket and black pants walks away from the camera along the road edge because a storefront display juts out, keeping her near the vehicle's path and likely constraining speed. Just ahead of the ego car, two other pedestrians linger at the curb by a bicycle on the left, partially encroaching into the lane and requiring space. Parked vehicles on the right, including a white sedan in a driveway and a small van, plus a utility pole, further pinch the roadway.", "hazard_reasoning": "There is a woman wearing a white jacket and black pants and walking on the left side of the road, away from the ego car, because there is a storefront display in the way. The pedestrian's proximity to the travel lane and potential intention to cross requires careful manoeuvring to avoid collision."}
{"id": "train_08681", "split": "train", "clip_key": "2020-0131-103016_071183_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "071183"}, "frames": ["2020-0131-103016_071183_movie_t-3.jpg", "2020-0131-103016_071183_movie_t-2.jpg", "2020-0131-103016_071183_movie_t-1.jpg", "2020-0131-103016_071183_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down for construction zone", "environment_perception": "An urban arterial with three same-direction lanes and smooth pavement carries moderate, steady traffic, and the opposite side is not visible, suggesting a divided roadway. A white box truck ahead in the ego lane travels at a steady speed and effectively sets the pace. A small covered truck in the right lane moves slightly faster and overtakes the ego vehicle. Farther ahead, a cluster of cars in the center and right lanes decelerates near the next junction, shaping the flow. On the left curb a service vehicle is stopped, and an orange traffic cone on the left side of the intersection indicates construction work that narrows the margin.", "hazard_reasoning": "There is an orange traffic cone on the left side of the intersection, indicating construction work. Driver should slow down to navigate safely around the construction area and avoid potential hazards."}
{"id": "train_08682", "split": "train", "clip_key": "titan_clip_1088_000330_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1088_000330_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1088_000330_movie_t-3_augB1.jpg", "titan_clip_1088_000330_movie_t-2_augB1.jpg", "titan_clip_1088_000330_movie_t-1_augB1.jpg", "titan_clip_1088_000330_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow two-way residential street with a single unmarked lane and no sidewalks runs between closely spaced buildings; the pavement is smooth and traffic is light with no moving vehicles. Ahead in the middle of the lane, a man in a gray T-shirt holding a white bag walks toward the ego vehicle because there is no sidewalk, occupying the path and constraining its pace. A black SUV is parked partially out of a driveway on the left and a bicycle stands by the hedge, narrowing the passage on that side. No signals or notable signs are visible.", "hazard_reasoning": "There is a man wearing a gray t-shirt and holding a white bag, walking in the middle of the road towards the ego car, because there is no sidewalk. The driver should carefully manoeuvre around him to avoid a collision."}
{"id": "train_08683", "split": "train", "clip_key": "2020-0129-144857_048917_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "048917"}, "frames": ["2020-0129-144857_048917_movie_t-3.jpg", "2020-0129-144857_048917_movie_t-2.jpg", "2020-0129-144857_048917_movie_t-1.jpg", "2020-0129-144857_048917_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban roadway runs under an elevated structure with two same-direction lanes and a right-side guardrail; the pavement is dry and traffic is stopped. A gray box truck directly ahead in the ego lane is stationary, holding the ego car in place. A smaller flatbed truck sits slightly ahead to the left in the adjacent lane, also stopped, narrowing the forward view. The right shoulder is lined by a metal barrier and a few cones near the structure, and no traffic signals or speed signs are visible.", "hazard_reasoning": "There is a gray truck that has stopped in front of the ego car, in the ego lane. The driver should stop to avoid colliding with the stationary vehicle ahead and maintain a safe following distance."}
{"id": "train_08684", "split": "train", "clip_key": "2020-0228-102841_061649_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "061649"}, "frames": ["2020-0228-102841_061649_movie_t-3.jpg", "2020-0228-102841_061649_movie_t-2.jpg", "2020-0228-102841_061649_movie_t-1.jpg", "2020-0228-102841_061649_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy, stop-and-go same-direction traffic, with no oncoming lanes visible and a small island on the right. A dark wagon directly ahead in the ego lane is stopped because congestion blocks the lanes ahead, holding the ego car. To the left, a black sedan slightly ahead creeps forward parallel to the ego lane and could merge. Farther ahead in the middle lanes, a queue of trucks and cars inches forward, forming the bottleneck. On the far right, several vans stand along the shoulder, outside the travel lanes.", "hazard_reasoning": "There is a black sedan stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should stop to prevent a collision with the halted vehicle ahead."}
{"id": "train_08685", "split": "train", "clip_key": "2020-0206-142535_037862_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "037862"}, "frames": ["2020-0206-142535_037862_movie_t-3.jpg", "2020-0206-142535_037862_movie_t-2.jpg", "2020-0206-142535_037862_movie_t-1.jpg", "2020-0206-142535_037862_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrian in crosswalk", "environment_perception": "An urban divided arterial with two same-direction lanes and a raised median has smooth pavement and light traffic, and vehicles are halted at an intersection. The ego car waits in the left lane at a red signal. To the right, a pedestrian in dark clothing crosses the marked crosswalk from the right sidewalk toward the median, passing ahead of the ego vehicle while the light is red. In the opposite carriageway to the right, a white car approaches the crosswalk and slows to a stop. Farther ahead in the ego direction, several small trucks are standing along the left curb near the intersection, occupying the curb lane but not blocking the ego lane.", "hazard_reasoning": "A pedestrian wearing all black is crossing at the pedestrian crosswalk to the right side of the road, because of the red light. The driver should stop to yield to the pedestrian and avoid a collision at the crosswalk."}
{"id": "train_08686", "split": "train", "clip_key": "titan_clip_513_000420_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_513_000420_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_513_000420_movie_t-3_augB1.jpg", "titan_clip_513_000420_movie_t-2_augB1.jpg", "titan_clip_513_000420_movie_t-1_augB1.jpg", "titan_clip_513_000420_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban neighborhood street with a single narrow lane and shared-lane arrows runs straight toward an unsignalized zebra crossing; pavement is smooth and traffic is light with no moving vehicles. Buildings line both sides and there is no center divider. A man pushing a blue bin walks in the middle of the lane ahead toward the ego vehicle, directly in the path and constraining its approach to the crosswalk. A small group of pedestrians stands and walks along the left sidewalk near a storefront close to the crosswalk, some edging near the curb but staying off the roadway. Another pedestrian moves along the right sidewalk near the crosswalk, remaining clear of the lane. The zebra crossing is clearly marked, and blue cones and bollards border the approaches.", "hazard_reasoning": "There is a man pushing a blue bin and walking in the middle of the road, towards the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a collision as he is walking directly into the vehicle's path under clear visibility conditions."}
{"id": "train_08687", "split": "train", "clip_key": "titan_clip_589_000378_movie", "source": {"subset": "titan", "scenario": "clip_589", "frame": "000378"}, "frames": ["titan_clip_589_000378_movie_t-3.jpg", "titan_clip_589_000378_movie_t-2.jpg", "titan_clip_589_000378_movie_t-1.jpg", "titan_clip_589_000378_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "be cautious of unloading van ahead", "environment_perception": "An urban two-way street with one narrow lane in each direction has smooth asphalt with a few manholes and no median; traffic is light with several vehicles parked along the curbs. Parked trucks line both sides, and on the right a gray van is stopped with its rear open as it is being unloaded while two people stand beside it, narrowing the opposing lane. A small white van ahead in the left lane travels steadily away, setting the ego vehicle's pace. Farther ahead, an oncoming white car proceeds in its lane toward the camera without deviating.", "hazard_reasoning": "There is a gray van parked on the right side of the road because it is being unloaded. This unloading activity may obstruct the roadway and reduce visibility for other vehicles and pedestrians."}
{"id": "train_08688", "split": "train", "clip_key": "titan_clip_89_000522_movie", "source": {"subset": "titan", "scenario": "clip_89", "frame": "000522"}, "frames": ["titan_clip_89_000522_movie_t-3.jpg", "titan_clip_89_000522_movie_t-2.jpg", "titan_clip_89_000522_movie_t-1.jpg", "titan_clip_89_000522_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban commercial side street with a single narrow lane and no median has smooth pavement and light traffic as the vehicle rolls past shopfronts. On the left, a black van stands at the curb just ahead, protruding slightly into the lane and narrowing the passage. On the right by the corner storefront, a man in a white shirt stands at the curb near a pole, lingering close to the roadway and potentially stepping into the vehicle's path. Farther ahead on the right sidewalk, another pedestrian walks away from the camera without interacting. A yellow pedestrian warning sign is posted at the corner, and short bollards and cones line the sidewalk edge.", "hazard_reasoning": "No caption available. No hazards detected, so the driver can continue driving normally."}
{"id": "train_08689", "split": "train", "clip_key": "2020-0220-151845_052758_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "052758"}, "frames": ["2020-0220-151845_052758_movie_t-3.jpg", "2020-0220-151845_052758_movie_t-2.jpg", "2020-0220-151845_052758_movie_t-1.jpg", "2020-0220-151845_052758_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated two-lane road runs under a large viaduct with concrete side barriers; the pavement is dry and traffic is slow to moderate. Ahead in the ego lane, a red flatbed truck with a tarped load slows with brake lights on because congestion builds ahead, constraining the ego vehicle. To the right, a black SUV draws alongside in the adjacent lane and eases past, showing that lane is moving slightly faster. Farther ahead in the right lane, a silver minivan continues forward at low speed as part of the queue the truck follows. Visibility ahead is partly limited by the overhead structure and a gentle right curve.", "hazard_reasoning": "There is a red truck slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and account for the truck's deceleration due to congestion."}
{"id": "train_08690", "split": "train", "clip_key": "titan_clip_1180_000504_movie", "source": {"subset": "titan", "scenario": "clip_1180", "frame": "000504"}, "frames": ["titan_clip_1180_000504_movie_t-3.jpg", "titan_clip_1180_000504_movie_t-2.jpg", "titan_clip_1180_000504_movie_t-1.jpg", "titan_clip_1180_000504_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist ahead.", "environment_perception": "An urban two-way street with one lane each direction curves gently left between mid-rise buildings; the pavement is smooth and traffic appears light to moderate. Ahead along the left edge, a cyclist wearing a white shirt rides away from the ego vehicle near the curb, close to the ego lane. Farther ahead in the same lane, a small white van proceeds uphill and modestly constrains the ego car's pace. In the opposing lane to the right, a black SUV and a red taxi approach and pass in oncoming flow near the centerline. Guardrails and parked bicycles line the left side.", "hazard_reasoning": "There is a cyclist wearing a white shirt, cycling along the left side of the road, away from the ego car. Be aware of the cyclist ahead as they may change direction unexpectedly."}
{"id": "train_08691", "split": "train", "clip_key": "titan_clip_1350_000456_movie", "source": {"subset": "titan", "scenario": "clip_1350", "frame": "000456"}, "frames": ["titan_clip_1350_000456_movie_t-3.jpg", "titan_clip_1350_000456_movie_t-2.jpg", "titan_clip_1350_000456_movie_t-1.jpg", "titan_clip_1350_000456_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian", "environment_perception": "An urban alley-like street with storefronts lines both sides; the narrow two-way road lacks a center line, the pavement is dry, and traffic is light. A pedestrian wearing a black shirt and carrying a backpack stands directly ahead near the left side of the lane in front of the ego car, occupying part of the path. On the right edge, another pedestrian walks along the building frontage toward the curb and approaches the roadway, which may bring them into the lane. Far ahead, a small delivery vehicle continues away in the same direction along the middle of the street. Numerous signboards and poles sit close to the curbs, tightening the available space.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, carrying a backpack, standing in front of the ego car. This pedestrian is directly ahead and may step into the vehicle's path, so the driver should yield to avoid a collision."}
{"id": "train_08692", "split": "train", "clip_key": "2020-0210-101957_024703_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_024703_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_024703_movie_t-3_augB1.jpg", "2020-0210-101957_024703_movie_t-2_augB1.jpg", "2020-0210-101957_024703_movie_t-1_augB1.jpg", "2020-0210-101957_024703_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "be aware of the motorcycle ahead.", "environment_perception": "An urban two-way arterial with smooth pavement and a painted median carries light to moderate flow toward a signalized intersection. A bicyclist rides ahead in the ego lane, proceeding straight at a steady pace on the green light and potentially constraining the ego vehicle. To the right in the oncoming lane, a black van approaches and continues straight, separated by the median and not encroaching on the ego path. The traffic signal ahead is green.", "hazard_reasoning": "There is a black motorcycle driving in front of the ego car in the ego lane, because of the green traffic light. The driver should be aware that the motorcycle may react to a traffic signal change, requiring adjustment of speed to maintain a safe distance."}
{"id": "train_08693", "split": "train", "clip_key": "titan_clip_1097_000426_movie", "source": {"subset": "titan", "scenario": "clip_1097", "frame": "000426"}, "frames": ["titan_clip_1097_000426_movie_t-3.jpg", "titan_clip_1097_000426_movie_t-2.jpg", "titan_clip_1097_000426_movie_t-1.jpg", "titan_clip_1097_000426_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban setting with a narrow two-way road lacking a center line, smooth pavement, and light traffic. On the left ahead, a pedestrian in a striped shirt and black pants pushes a cart away from the ego along the lane edge, and may step into the travel line. Just beyond, a black van is stopped along the left curb and partially occupies the lane, constraining the ego vehicle's passage. Farther ahead in the same direction, a small car proceeds down the street at low speed, setting the pace. A 30 speed limit sign stands on the left, and the pedestrian signal at the near crosswalk shows red.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt, black pants, and pushing a cart, walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a potential collision."}
{"id": "train_08694", "split": "train", "clip_key": "2020-0210-101957_009118_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "009118"}, "frames": ["2020-0210-101957_009118_movie_t-3.jpg", "2020-0210-101957_009118_movie_t-2.jpg", "2020-0210-101957_009118_movie_t-1.jpg", "2020-0210-101957_009118_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane two-way street with an orange centerline runs between mid-rise buildings; the pavement is smooth and traffic is moderate with tight spacing. Ahead in the ego lane, a green sedan slows because traffic is queued ahead and it sets the ego vehicle's pace. Farther forward in the same direction, a white minibus moves slowly, contributing to the short line of cars. In the opposite lane, a black minivan and a light truck approach and pass close to the centerline, continuing steadily as oncoming traffic. Metal railings edge both sidewalks, and a couple of trucks are parked off to the right outside the travel lane.", "hazard_reasoning": "There is a green sedan slowing down in the front of the ego-car, in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_08695", "split": "train", "clip_key": "2020-0217-110854_046525_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "046525"}, "frames": ["2020-0217-110854_046525_movie_t-3.jpg", "2020-0217-110854_046525_movie_t-2.jpg", "2020-0217-110854_046525_movie_t-1.jpg", "2020-0217-110854_046525_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane road runs beneath an elevated expressway, the pavement is smooth, and traffic flow is light. A black minivan directly ahead in the ego lane accelerates as traffic starts moving, briefly setting the ego vehicle's pace. A small white van in the adjacent lane to the left rolls alongside at low speed without drifting toward the ego path. A fenced work area lines the right shoulder behind a guardrail, and the roadway ahead remains clear.", "hazard_reasoning": "There's a black minivan accelerating in the ego lane, because traffic has started moving. The driver should start moving promptly to keep up with the flow and avoid sudden braking or rear-end collisions."}
{"id": "train_08696", "split": "train", "clip_key": "2020-0228-150133_066569_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "066569"}, "frames": ["2020-0228-150133_066569_movie_t-3.jpg", "2020-0228-150133_066569_movie_t-2.jpg", "2020-0228-150133_066569_movie_t-1.jpg", "2020-0228-150133_066569_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with good pavement carries heavy, slow traffic toward an intersection, with oncoming traffic separated by a planted median. A gray sedan directly ahead in the ego lane slows and queues with other cars at a red light, constraining the ego car's pace. In the adjacent left lane, a blue hatchback and a white minivan creep forward alongside in the same direction, maintaining the queue and limiting room to merge. Farther ahead in the ego lane, a small truck and several vans line up and move intermittently with the signal. Oncoming cars travel steadily on the far side of the median without affecting the ego path. Overhead blue guide signs indicate directions for Ogikubo to the left and Kitamachi to the right near Route 8.", "hazard_reasoning": "There is a gray sedan slowing down in front of the ego car, in the ego lane, because of red light traffic. The driver should slow down to maintain a safe following distance and avoid a collision due to the sedan's deceleration at the red light."}
{"id": "train_08697", "split": "train", "clip_key": "2020-0129-144857_041728_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-144857_041728_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-144857_041728_movie_t-3_augB1.jpg", "2020-0129-144857_041728_movie_t-2_augB1.jpg", "2020-0129-144857_041728_movie_t-1_augB1.jpg", "2020-0129-144857_041728_movie_t_augB1.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multilane road runs under an elevated structure with smooth pavement, a right-side guardrail, and heavy, slow-moving same-direction traffic. A black van directly ahead in the ego lane slows and bunches up because of congestion, constraining the ego car's pace. To the left, a white wagon proceeds slowly in the adjacent lane roughly alongside the ego vehicle, keeping pace with the queue. Farther left, a covered truck creeps forward with the flow, remaining in its lane and not affecting the ego path. A 40 speed-limit sign is posted on the right, and construction fencing tightens the right shoulder but does not intrude into the lane.", "hazard_reasoning": "There's a black van slowing in front of the ego car in the ego lane, because of traffic congestion ahead. The van's reduced speed indicates congested traffic that requires you to lower speed to maintain a safe distance."}
{"id": "train_08698", "split": "train", "clip_key": "titan_clip_1250_000540_movie", "source": {"subset": "titan", "scenario": "clip_1250", "frame": "000540"}, "frames": ["titan_clip_1250_000540_movie_t-3.jpg", "titan_clip_1250_000540_movie_t-2.jpg", "titan_clip_1250_000540_movie_t-1.jpg", "titan_clip_1250_000540_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "A dense urban shopping street with a single narrow lane and no median stretches ahead; the asphalt looks worn and vehicle traffic is very light while pedestrian activity is high. Two large delivery trucks stop along the left side with rear doors open, and their loading operation extends into the lane, slowing any approach. A worker at the nearer truck moves a small cart near the lane center, occupying space that constrains the path. On the right side a pedestrian in a white dress walks toward the ego vehicle after stepping out to pass a parked vehicle, edging into the roadway. Another man stands at the right curb in the foreground and remains stationary. No traffic signals or speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a white dress, walking towards the ego car, on the right side of the road, because of a parked vehicle. The driver should yield to avoid a collision as the pedestrian may step into the vehicle's path."}
{"id": "train_08699", "split": "train", "clip_key": "2020-0206-101736_039749_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "039749"}, "frames": ["2020-0206-101736_039749_movie_t-3.jpg", "2020-0206-101736_039749_movie_t-2.jpg", "2020-0206-101736_039749_movie_t-1.jpg", "2020-0206-101736_039749_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane street with tall buildings lines the scene, the pavement is smooth, and traffic is moderate as vehicles queue toward an intersection. A white sedan directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle. A silver microvan slightly ahead in the adjacent right lane creeps forward with the queue while remaining in its lane. Farther ahead several cars line up across both lanes, and a medium truck in the right lane waits near the curb. Overhead signals ahead display red.", "hazard_reasoning": "There is a white Sedan stopped in the ego lane because of red traffic light. The vehicle ahead has come to a halt at the signal, so you should stop to avoid a collision."}
{"id": "train_08700", "split": "train", "clip_key": "2020-0228-102841_051485_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "051485"}, "frames": ["2020-0228-102841_051485_movie_t-3.jpg", "2020-0228-102841_051485_movie_t-2.jpg", "2020-0228-102841_051485_movie_t-1.jpg", "2020-0228-102841_051485_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around parked truck", "environment_perception": "An urban multi-lane arterial with no physical median and smooth pavement carries slow, moderate traffic. Immediately ahead on the left, a white box truck is parked in the ego lane and blocks part of it. A small white kei truck proceeds ahead in the same lane at low speed, constraining the ego vehicle's pace. Another box truck continues straight in the adjacent right lane slightly ahead, moving past the obstruction.", "hazard_reasoning": "There's a white truck parked on the left side of the road, in the ego lane. This reduces lane space and driver visibility, so the driver should carefully manoeuvre around it to avoid a collision."}
{"id": "train_08701", "split": "train", "clip_key": "2020-0204-103442_007896_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "007896"}, "frames": ["2020-0204-103442_007896_movie_t-3.jpg", "2020-0204-103442_007896_movie_t-2.jpg", "2020-0204-103442_007896_movie_t-1.jpg", "2020-0204-103442_007896_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with three same-direction lanes runs between tall buildings; pavement is clean and traffic is heavy, bunching near a signalized intersection ahead. A black SUV directly ahead in the ego lane slows because of congestion, constraining the ego vehicle's pace. A large white tour bus ahead in the adjacent right lane moves slowly near the crosswalk, partly screening the view of the junction. A silver van to the right draws alongside and continues forward in its lane, which may allow it to merge ahead of the ego car. Crowds of pedestrians wait along the left sidewalk by the crosswalk at the intersection. Overhead traffic lights are visible above the junction.", "hazard_reasoning": "There is a black SUV slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance as the vehicle ahead reduces speed due to congestion."}
{"id": "train_08702", "split": "train", "clip_key": "2020-0207-151349_079008_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "079008"}, "frames": ["2020-0207-151349_079008_movie_t-3.jpg", "2020-0207-151349_079008_movie_t-2.jpg", "2020-0207-151349_079008_movie_t-1.jpg", "2020-0207-151349_079008_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with stopped truck", "environment_perception": "An urban two-lane road runs under an elevated structure, with a guardrail and narrow shoulder on the right, dry pavement, and heavy, stop-and-go traffic. A brown dump truck is directly ahead in the ego lane and remains stopped, held by congestion and a yellow traffic light visible up the road, blocking the ego vehicle's path. In the adjacent left lane a white box truck queues slightly ahead and inches forward, limiting any chance to merge. A black sedan to the left of the ego rolls slowly alongside toward the same queue. The signal ahead shows yellow as the line stacks beneath it.", "hazard_reasoning": "There is a brown truck stopped in the ego lane, because of traffic congestion and yellow traffic lights ahead. Therefore, the driver should stop to avoid colliding with the stopped truck as the signal may change and require sudden braking."}
{"id": "train_08703", "split": "train", "clip_key": "2020-0212-102546_074074_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "074074"}, "frames": ["2020-0212-102546_074074_movie_t-3.jpg", "2020-0212-102546_074074_movie_t-2.jpg", "2020-0212-102546_074074_movie_t-1.jpg", "2020-0212-102546_074074_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of lane obstruction ahead", "environment_perception": "An urban two-lane same-direction road with a right-side guardrail and shrubs has dry, slightly worn pavement and slow flow due to roadside work. Ahead in the ego lane, a large construction vehicle moves slowly and sets the pace. In the left lane ahead, a small covered truck proceeds carefully within the narrowed space close to the cones beside the work vehicle, limiting lateral clearance near the ego path. On the far left near the camera, a white service truck is parked at the curb, further constricting the left edge. Orange traffic cones line the left side, including an orange cone on the left side of the road, and a few small barriers sit within that lane.", "hazard_reasoning": "There is an orange traffic cone located on the left side of the road. The cone and parked vehicle create a partial obstruction in the left lane, which may require the driver to adjust position or speed to avoid collision."}
{"id": "train_08704", "split": "train", "clip_key": "2020-0204-103442_077508_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "077508"}, "frames": ["2020-0204-103442_077508_movie_t-3.jpg", "2020-0204-103442_077508_movie_t-2.jpg", "2020-0204-103442_077508_movie_t-1.jpg", "2020-0204-103442_077508_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way one-lane road with no median and smooth pavement leads into a small intersection; traffic is light. An oncoming silver minivan ahead turns left across the junction into a side street on the right, clearing the area without entering the ego lane. A white van is stopped at the curb on the right at the intersection. A suspended traffic signal hangs above the junction.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08705", "split": "train", "clip_key": "titan_clip_203_000432_movie", "source": {"subset": "titan", "scenario": "clip_203", "frame": "000432"}, "frames": ["titan_clip_203_000432_movie_t-3.jpg", "titan_clip_203_000432_movie_t-2.jpg", "titan_clip_203_000432_movie_t-1.jpg", "titan_clip_203_000432_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian ahead.", "environment_perception": "A narrow urban two-way street runs between tall buildings with no median and smooth dry pavement, and traffic is light as the car continues straight. A white van is parked along the left curb protruding into the lane, narrowing the passage. On the right side ahead, a pedestrian in a white shirt and black pants walks away from the car along the edge, close to the travel lane and potentially entering the path. Another pedestrian near the van on the left walks ahead in the roadway toward the center, so the vehicle may need to give space. Far ahead in the same direction a small box truck sits in the lane and slows the flow.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, and walking away from the ego car, on the right side of the road. You should stay alert as they may step into your path unexpectedly."}
{"id": "train_08706", "split": "train", "clip_key": "titan_clip_1221_000066_movie", "source": {"subset": "titan", "scenario": "clip_1221", "frame": "000066"}, "frames": ["titan_clip_1221_000066_movie_t-3.jpg", "titan_clip_1221_000066_movie_t-2.jpg", "titan_clip_1221_000066_movie_t-1.jpg", "titan_clip_1221_000066_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban two-way side street with no center line runs between buildings, the smooth pavement bordered by a hedge on the left and a raised planter on the right, with light traffic. An oncoming dark car appears along the right side and passes close by in its lane, briefly narrowing the available space. Farther ahead in the ego lane, a white van proceeds slowly near the center of the road, influencing the ego car's pace. On the right curb mid-distance, a pedestrian wearing a black shirt and black pants stands beside a scooter, close to the roadway and may enter the lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black pants and standing beside a scooter on the right side of the road. The pedestrian may step into the travel lane unexpectedly, so the driver should remain alert."}
{"id": "train_08707", "split": "train", "clip_key": "titan_clip_736_000360_movie", "source": {"subset": "titan", "scenario": "clip_736", "frame": "000360"}, "frames": ["titan_clip_736_000360_movie_t-3.jpg", "titan_clip_736_000360_movie_t-2.jpg", "titan_clip_736_000360_movie_t-1.jpg", "titan_clip_736_000360_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian pushing stroller on road.", "environment_perception": "An urban narrow two-way street with no centerline and smooth, slightly patched asphalt runs between low-rise shops; the ego vehicle proceeds on the left and traffic is very light with no oncoming vehicles. Ahead on the right edge of the lane, a pedestrian pushes a stroller away from the ego car along the roadway where there is no sidewalk, effectively setting the ego vehicle's pace. Parked bicycles and scooters line the right curb and locally narrow the usable lane. A few no-entry signs mark nearby side alleys.", "hazard_reasoning": "A pedestrian pushing a stroller and walking on the right side of the road away from the ego car, because there is no sidewalk. The pedestrian may unexpectedly move into the driving lane, so stay alert to adjust speed or direction."}
{"id": "train_08708", "split": "train", "clip_key": "2020-0214-145407_022079_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "022079"}, "frames": ["2020-0214-145407_022079_movie_t-3.jpg", "2020-0214-145407_022079_movie_t-2.jpg", "2020-0214-145407_022079_movie_t-1.jpg", "2020-0214-145407_022079_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road with smooth pavement runs beside landscaped trees and hedges, and overall traffic is light. The ego vehicle proceeds in the left lane as a brown dump truck directly ahead in the same lane slows, constraining the ego car's pace. A few distant vehicles appear in the right lanes without affecting the ego path. An overhead gantry spans the roadway with no active signals.", "hazard_reasoning": "There is a brown truck slowing down in front of the ego car. The truck's deceleration indicates a need to reduce speed to maintain a safe following distance."}
{"id": "train_08709", "split": "train", "clip_key": "titan_clip_394_000264_movie", "source": {"subset": "titan", "scenario": "clip_394", "frame": "000264"}, "frames": ["titan_clip_394_000264_movie_t-3.jpg", "titan_clip_394_000264_movie_t-2.jpg", "titan_clip_394_000264_movie_t-1.jpg", "titan_clip_394_000264_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian monitoring traffic", "environment_perception": "An urban alley with a single narrow shared lane paved with interlocking bricks runs between shops and a scaffolded building; there is no median, vehicle traffic is light, and foot traffic is heavy. A parked work truck on the right with cones and tape narrows the lane, and a person in black pants and a black shirt stands beside it monitoring traffic. Several pedestrians walk ahead in the lane and along both sides, some crossing near the vehicle and constraining the pace. Far ahead, a small white van is stopped in the center of the roadway.", "hazard_reasoning": "A pedestrian wearing black pants and a black shirt, and standing on the right side of the road, because he is monitoring traffic. Drivers should be aware since the parked truck limits visibility and the pedestrian may step into traffic unexpectedly."}
{"id": "train_08710", "split": "train", "clip_key": "titan_clip_285_000420_movie", "source": {"subset": "titan", "scenario": "clip_285", "frame": "000420"}, "frames": ["titan_clip_285_000420_movie_t-3.jpg", "titan_clip_285_000420_movie_t-2.jpg", "titan_clip_285_000420_movie_t-1.jpg", "titan_clip_285_000420_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with single lanes and no median runs between low buildings; the pavement looks sound and traffic is light. A pedestrian in a pink shirt and black skirt steps out from the left sidewalk ahead and walks across to the right, passing directly in front of the ego vehicle and constraining its pace. A large box truck sits along the right curb in the oncoming lane a short distance ahead, narrowing the roadway and partly hiding the far side where the pedestrian completes the crossing. Bicycles are parked at a storefront on the left but remain off the roadway.", "hazard_reasoning": "There is a pedestrian wearing a pink shirt and black skirt, crossing the street in front of the ego car, from the left side to the right side. Slow down because the pedestrian is crossing in front of the vehicle and may enter its path."}
{"id": "train_08711", "split": "train", "clip_key": "2020-0213-143552_067108_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "067108"}, "frames": ["2020-0213-143552_067108_movie_t-3.jpg", "2020-0213-143552_067108_movie_t-2.jpg", "2020-0213-143552_067108_movie_t-1.jpg", "2020-0213-143552_067108_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately.", "environment_perception": "An urban divided arterial with multiple same-direction lanes and a hedge-and-rail median has smooth pavement and heavy, stop-and-go flow. A white box truck is stopped directly ahead in the ego lane because of congestion, holding the ego vehicle. To the left, a blue hatchback and a dark sedan queue in the adjacent lane, creeping forward alongside and keeping the ego vehicle boxed in. Beyond the median to the right, a white truck proceeds in the oncoming lanes and does not interact. No unusual obstacles are visible.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, because of traffic congestion. The stopped truck could cause sudden deceleration and potential collision if not anticipated, so the driver should stop to avoid impact."}
{"id": "train_08712", "split": "train", "clip_key": "2020-0129-144857_057559_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "057559"}, "frames": ["2020-0129-144857_057559_movie_t-3.jpg", "2020-0129-144857_057559_movie_t-2.jpg", "2020-0129-144857_057559_movie_t-1.jpg", "2020-0129-144857_057559_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with a single lane in the ego direction runs beneath a pedestrian overpass, divided from oncoming lanes on the right by a guardrail median; the pavement is dry and intact, and traffic moves at a moderate pace. Ahead in the ego lane, a white truck drives away from the ego car at a steady speed, effectively setting the lane's pace. To the right beyond the median, several oncoming vehicles approach in their lanes without affecting the ego path. Along the opposite curb, a box truck and a small car move slowly near the guardrail but stay within the other carriageway. No traffic signals are visible and no obstacles encroach on the ego lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08713", "split": "train", "clip_key": "2020-0131-103016_079114_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "079114"}, "frames": ["2020-0131-103016_079114_movie_t-3.jpg", "2020-0131-103016_079114_movie_t-2.jpg", "2020-0131-103016_079114_movie_t-1.jpg", "2020-0131-103016_079114_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road curves gently left with a right-side raised median and dry, smooth pavement, and traffic is moderate. A white van drives ahead in the ego lane, maintaining course and effectively setting the ego vehicle's pace. In the adjacent right lane a silver van runs slightly ahead at a similar speed, limiting an immediate rightward lane change. Farther ahead, several heavy trucks occupy the center and right lanes and roll in a short queue, constraining the flow in those lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08714", "split": "train", "clip_key": "2020-0131-103016_085588_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "085588"}, "frames": ["2020-0131-103016_085588_movie_t-3.jpg", "2020-0131-103016_085588_movie_t-2.jpg", "2020-0131-103016_085588_movie_t-1.jpg", "2020-0131-103016_085588_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial with two lanes in the ego direction and opposing lanes on the far side, no physical median, has smooth pavement and moderate flow that slows near a signalized intersection. A small white kei van directly ahead in the ego lane slows because of congestion ahead, constraining the ego car. A larger white van slightly ahead to the right proceeds straight in the adjacent lane, moving parallel to the ego vehicle. A person pushing a bicycle waits at the left curb by the zebra crossing and may enter the roadway near the ego path. Another pedestrian stands at the same crossing by the shopfront, waiting at the curb. An overhead traffic signal controls the junction.", "hazard_reasoning": "There is a white van slowing down in front of the ego-car, because of traffic congestion ahead. The driver should follow the vehicle ahead to maintain safe distance and adapt smoothly to slowing traffic."}
{"id": "train_08715", "split": "train", "clip_key": "2020-0228-102841_025166_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "025166"}, "frames": ["2020-0228-102841_025166_movie_t-3.jpg", "2020-0228-102841_025166_movie_t-2.jpg", "2020-0228-102841_025166_movie_t-1.jpg", "2020-0228-102841_025166_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes and no physical median is shown; the pavement is dry and smooth, and overall traffic is light. A black sedan ahead in the ego lane slows in front of the ego car, becoming the primary vehicle constraining the pace. Two bicyclists ride further ahead along the left curb in the same direction, moving steadily and staying near the edge where they may enter the lane. In the adjacent right lane, a white box truck proceeds ahead at a constant speed without cutting in. A circular roadside sign posts a speed limit of 50.", "hazard_reasoning": "There is a black sedan slowing in the ego lane, in front of the ego car. The sedan's deceleration may require you to reduce speed promptly to maintain a safe following distance."}
{"id": "train_08716", "split": "train", "clip_key": "titan_clip_1104_000558_movie", "source": {"subset": "titan", "scenario": "clip_1104", "frame": "000558"}, "frames": ["titan_clip_1104_000558_movie_t-3.jpg", "titan_clip_1104_000558_movie_t-2.jpg", "titan_clip_1104_000558_movie_t-1.jpg", "titan_clip_1104_000558_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban shopping alley with a single shared lane is block-paved and lacks a divider, with vehicle traffic light and pedestrian activity high. The ego vehicle creeps forward as a gray van is parked on the right intruding into the lane, narrowing the passage. From the left foreground, a man strides across toward the center, crossing the ego path and momentarily blocking progress. Farther ahead in the middle of the lane, a pedestrian walks away in the same direction, occupying the path and setting the pace. Additional pedestrians appear farther ahead along the sides but do not enter the lane. Scaffolding and cones along the right wall beside the parked van create another pinch point.", "hazard_reasoning": "There is a gray van parked in the ego lane to the right. It partially obstructs the lane and visibility, so the driver should carefully manoeuvre around it to maintain safe clearance."}
{"id": "train_08717", "split": "train", "clip_key": "titan_clip_348_000240_movie", "source": {"subset": "titan", "scenario": "clip_348", "frame": "000240"}, "frames": ["titan_clip_348_000240_movie_t-3.jpg", "titan_clip_348_000240_movie_t-2.jpg", "titan_clip_348_000240_movie_t-1.jpg", "titan_clip_348_000240_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban backstreet with a single narrow lane rises gently between tall buildings; the block-paved surface is dry with no center divider or clear lane markings, and traffic is very light with no vehicles visible. Midway ahead, a pedestrian in a green shirt and black pants crosses from right to left in the middle of the road, moving directly across the ego vehicle's path. Farther up the block, two pedestrians walk away along the left edge, remaining outside the travel lane. Another person stands at the curb by a blue container on the left, stationary near the roadway and potentially entering the lane.", "hazard_reasoning": "There is a pedestrian wearing a green shirt and black pants, and crossing the street from the right side to the left side, in the middle of the road. The driver should slow down because the pedestrian is crossing midroad, posing a collision risk."}
{"id": "train_08718", "split": "train", "clip_key": "2020-0226-101332_048051_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "048051"}, "frames": ["2020-0226-101332_048051_movie_t-3.jpg", "2020-0226-101332_048051_movie_t-2.jpg", "2020-0226-101332_048051_movie_t-1.jpg", "2020-0226-101332_048051_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial curves right toward a signalized intersection, with painted lane dividers, no physical median, and smooth pavement; traffic is moderate and begins to move after a brief stop. Ahead in the ego lane, a green sedan accelerates as the light turns green and traffic starts moving again, leading the ego car forward. In the lane to the left, a large city bus slightly ahead rolls forward in parallel, keeping close and limiting room to shift left. Farther ahead to the right, a flatbed truck in the adjacent lane also moves off through the bend and tracks near the ego path. The traffic signal ahead shows green.", "hazard_reasoning": "There is a green sedan accelerating in front of the ego car, in the ego lane, because of traffic beginning to move again. The driver should slow down to maintain a safe following distance as vehicles may accelerate unpredictably at the signal change."}
{"id": "train_08719", "split": "train", "clip_key": "2020-0203-154554_053500_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "053500"}, "frames": ["2020-0203-154554_053500_movie_t-3.jpg", "2020-0203-154554_053500_movie_t-2.jpg", "2020-0203-154554_053500_movie_t-1.jpg", "2020-0203-154554_053500_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial under an elevated expressway carries three lanes in the ego direction, separated from oncoming lanes to the right by a guardrail; the pavement is dry and smooth and traffic is light. A white passenger car ahead in the center lane proceeds steadily and effectively sets the ego vehicle's pace. In the left lane near the curb, a box truck slows or waits with another van parked behind it, partially obstructing that lane and discouraging a lane change left. On the right beyond the barrier, oncoming cars flow steadily and remain isolated from the ego path.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08720", "split": "train", "clip_key": "2020-0225-102455_021734_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "021734"}, "frames": ["2020-0225-102455_021734_movie_t-3.jpg", "2020-0225-102455_021734_movie_t-2.jpg", "2020-0225-102455_021734_movie_t-1.jpg", "2020-0225-102455_021734_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with a single narrow lane each way and no median; pavement is dry, and traffic is heavy and crawling. A silver sedan directly ahead in the ego lane slows to a crawl because a queue forms ahead, keeping the ego car at low speed. Farther ahead, a black van in the same lane is stopped near the curb and blocks the lane, shaping the congestion. To the right, oncoming traffic including a white truck queues in its lane and passes slowly beside the line of cars. A 10 speed limit sign and no-stopping signs are posted at the corner, with a zebra crosswalk at the side street.", "hazard_reasoning": "There is a silver sedan slowing in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should follow the vehicle ahead to maintain a safe distance and adapt to the slower traffic conditions."}
{"id": "train_08721", "split": "train", "clip_key": "2020-0213-143552_006322_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "006322"}, "frames": ["2020-0213-143552_006322_movie_t-3.jpg", "2020-0213-143552_006322_movie_t-2.jpg", "2020-0213-143552_006322_movie_t-1.jpg", "2020-0213-143552_006322_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the stopped black truck.", "environment_perception": "An urban two-way arterial with two lanes in each direction and a painted centerline stretches ahead on dry, smooth pavement with light traffic. On the left ahead, a black truck is stopped at the curb with its rear open being unloaded, encroaching on the bike lane and reducing space if it reenters traffic. In the opposite lanes, a small truck and a white car approach steadily, continuing straight as oncoming traffic. On the left sidewalk beside a shop, a pedestrian walks along the curb but remains off the roadway.", "hazard_reasoning": "There is a black truck stopped on the left side of the road, because it is being unloaded. The driver should be aware of this stopped vehicle as unloading activities could delay traffic or cause sudden movements."}
{"id": "train_08722", "split": "train", "clip_key": "titan_clip_966_000198_movie", "source": {"subset": "titan", "scenario": "clip_966", "frame": "000198"}, "frames": ["titan_clip_966_000198_movie_t-3.jpg", "titan_clip_966_000198_movie_t-2.jpg", "titan_clip_966_000198_movie_t-1.jpg", "titan_clip_966_000198_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully", "environment_perception": "A tree-lined urban boulevard has two lanes in the ego direction, divided from oncoming lanes by a planted median; the pavement looks smooth and traffic is light. Ahead in the ego lane, a brown truck is stopped, blocking the lane and constraining the ego's pace. To the right, a silver van in the adjacent lane moves forward and passes, bypassing the stopped truck. Farther ahead in the right lane, a small car continues steadily away in the same direction. Across the median, sparse oncoming traffic flows normally. Several work vehicles and equipment are stationed along the left curb near the stopped truck.", "hazard_reasoning": "There is a brown truck stopped in front of the ego car in the ego lane. The stopped brown truck blocks the path, so the driver should manoeuvre carefully to avoid a collision."}
{"id": "train_08723", "split": "train", "clip_key": "titan_clip_1048_000174_movie", "source": {"subset": "titan", "scenario": "clip_1048", "frame": "000174"}, "frames": ["titan_clip_1048_000174_movie_t-3.jpg", "titan_clip_1048_000174_movie_t-2.jpg", "titan_clip_1048_000174_movie_t-1.jpg", "titan_clip_1048_000174_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban side street with no centerline runs between buildings, with parked cars lining the left curb and shopfronts with green railings on the right; the pavement appears damp and traffic is light with no moving vehicles in either direction. Ahead in the middle of the road, a pedestrian wearing black pants walks away from the ego vehicle along the lane, remaining in the travel path and constraining the ego vehicle's pace. No traffic signals or posted speeds are clearly visible. The parked vehicles and close buildings create a tight corridor with limited passing space.", "hazard_reasoning": "There is a pedestrian wearing black pants, walking in the middle of the road, away from the ego car. Since the pedestrian is walking in the vehicle's path on a narrow street, the driver should slow down to avoid a potential collision."}
{"id": "train_08724", "split": "train", "clip_key": "2020-0204-103442_083223_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "083223"}, "frames": ["2020-0204-103442_083223_movie_t-3.jpg", "2020-0204-103442_083223_movie_t-2.jpg", "2020-0204-103442_083223_movie_t-1.jpg", "2020-0204-103442_083223_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential scene unfolds on a narrow two-way street with no median and smooth pavement; traffic is light as the ego car approaches a signalized intersection with a zebra crossing. A white van ahead in the ego lane continues straight and pulls away because the road ahead is clear of traffic. Several oncoming cars in the right lane proceed toward the intersection at low speed, passing by without affecting the ego vehicle. Two pedestrians wait at the corners by the crosswalk, watching the road but not stepping out. The overhead traffic signal facing the ego direction shows green.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08725", "split": "train", "clip_key": "titan_clip_200_000156_movie", "source": {"subset": "titan", "scenario": "clip_200", "frame": "000156"}, "frames": ["titan_clip_200_000156_movie_t-3.jpg", "titan_clip_200_000156_movie_t-2.jpg", "titan_clip_200_000156_movie_t-1.jpg", "titan_clip_200_000156_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban intersection appears with a narrow undivided side street continuing ahead between tall buildings; pavement is clean and there is no moving vehicular traffic. On the right, a pedestrian wearing a white shirt and black pants walks from the sidewalk toward the crosswalk and toward the ego vehicle, potentially stepping into the ego lane. On the left near the storefronts, two pedestrians move along the sidewalk at the corner without entering the roadway. Farther ahead in the narrow street there are no visible vehicles or cyclists. A blue pedestrian crossing sign stands on the right beside the zebra crosswalk, which spans the ego vehicle's path.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking at the right side of the intersection, toward to the ego car. The pedestrian is moving into the vehicle's potential path and may enter the lane unexpectedly, so the driver should be aware."}
{"id": "train_08726", "split": "train", "clip_key": "2020-0214-145407_067348_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "067348"}, "frames": ["2020-0214-145407_067348_movie_t-3.jpg", "2020-0214-145407_067348_movie_t-2.jpg", "2020-0214-145407_067348_movie_t-1.jpg", "2020-0214-145407_067348_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An urban multi-lane arterial runs straight between tall buildings, with two same-direction lanes and a low hedge along the right edge; the pavement is dry and traffic is heavy and stopped. A white sedan directly ahead in the ego lane is stationary for the red light, holding the ego vehicle in queue. In the adjacent left lane, a small white van beside and slightly ahead is also stopped, limiting any chance to merge. Farther ahead in the same lane, a taller white van waits with brake lights on, adding to the line. The overhead signal ahead shows red.", "hazard_reasoning": "There is a white sedan stopped in the ego lane because of a red light ahead. You should stop to avoid collision and comply with the traffic signal."}
{"id": "train_08727", "split": "train", "clip_key": "titan_clip_1068_000528_movie", "source": {"subset": "titan", "scenario": "clip_1068", "frame": "000528"}, "frames": ["titan_clip_1068_000528_movie_t-3.jpg", "titan_clip_1068_000528_movie_t-2.jpg", "titan_clip_1068_000528_movie_t-1.jpg", "titan_clip_1068_000528_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban alley with a narrow two-way road lacking a centerline runs between close buildings, with a railed walkway on the right; the pavement is smooth and dry and motor traffic is absent. Along the right edge ahead, a pedestrian in shorts and a white shirt walks toward the ego vehicle, close to the travel lane and may enter it. Two other pedestrians move along the raised right sidewalk behind the railing and stay clear of the roadway. No oncoming or same-direction vehicles appear. Orange no-parking cones sit on the left shoulder without encroaching on the lane.", "hazard_reasoning": "There is a pedestrian wearing shorts and a white shirt, walking on the right side of the road, toward the ego car. The pedestrian may step into the lane ahead, so the driver needs to slow down to avoid a collision."}
{"id": "train_08728", "split": "train", "clip_key": "2020-0206-142535_005949_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-142535_005949_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-142535_005949_movie_t-3_augB1.jpg", "2020-0206-142535_005949_movie_t-2_augB1.jpg", "2020-0206-142535_005949_movie_t-1_augB1.jpg", "2020-0206-142535_005949_movie_t_augB1.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "HIGH", "warning_content": "Yield to oncoming bus", "environment_perception": "A narrow urban two-way street with no median has smooth pavement and light traffic as the ego vehicle proceeds in the left lane between close buildings. Ahead to the right, a pink coach approaches in the oncoming lane but straddles the center line and enters the ego lane to pass a black van parked at the curb, moving toward the ego car and briefly blocking the path. A small white flatbed truck is directly ahead in the ego lane continuing straight at low speed, setting the pace and reducing room for the opposing bus to reenter its lane. The black van remains stationary on the far right edge of the opposing lane. Cones and temporary barriers line the left curb, narrowing usable width.", "hazard_reasoning": "There is a pink bus driving over the lane marker and in the opposing lane, toward the ego car, because it is driving around a parked vehicle. The bus's movement into the opposing lane creates a risk of collision, so the driver should yield to allow safe clearance."}
{"id": "train_08729", "split": "train", "clip_key": "2020-0205-152530_012655_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "012655"}, "frames": ["2020-0205-152530_012655_movie_t-3.jpg", "2020-0205-152530_012655_movie_t-2.jpg", "2020-0205-152530_012655_movie_t-1.jpg", "2020-0205-152530_012655_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with good pavement runs between tall buildings and a riverside railing; the ego car is in the leftmost lane and traffic is heavy and mostly stopped under strong sun glare. A black sedan directly ahead in the ego lane is stationary at the signal, queuing for the red light and holding the ego vehicle. To the right, a white mini truck slightly ahead in the adjacent lane creeps forward with the queue and could move ahead of the ego car. Farther right, a dark van proceeds slowly alongside in the next lane. An overhead traffic signal is visible above the intersection.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, because of a red traffic light. The driver should stop to obey the signal and avoid a rear-end collision under this situation."}
{"id": "train_08730", "split": "train", "clip_key": "titan_clip_583_000162_movie", "source": {"subset": "titan", "scenario": "clip_583", "frame": "000162"}, "frames": ["titan_clip_583_000162_movie_t-3.jpg", "titan_clip_583_000162_movie_t-2.jpg", "titan_clip_583_000162_movie_t-1.jpg", "titan_clip_583_000162_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the parked truck ahead", "environment_perception": "An urban neighborhood street with close buildings, a narrow two-way carriageway without a centerline, smooth pavement, and light traffic. On the left, a white truck is parked for unloading with its rear open and a worker handling goods, slightly encroaching into the travel lane and narrowing the passage. Ahead, a silver car in front of the ego vehicle rolls slowly at the unsignalized intersection and then continues, briefly setting the pace. No signals, medians, or other moving road users are prominent.", "hazard_reasoning": "There is a white truck parked on the left side of the road because it is being unloaded. It partially blocks the sidewalk and may force pedestrians into the roadway, so be cautious."}
{"id": "train_08731", "split": "train", "clip_key": "2020-0227-153144_014092_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "014092"}, "frames": ["2020-0227-153144_014092_movie_t-3.jpg", "2020-0227-153144_014092_movie_t-2.jpg", "2020-0227-153144_014092_movie_t-1.jpg", "2020-0227-153144_014092_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban signalized intersection on a two-lane left-driving approach has clean pavement and light traffic. A black van directly ahead in the ego lane accelerates away through the junction under a green turn arrow. A white van to the right waits at the stop line for the red straight phase and remains out of the ego path. Pedestrians on the left sidewalk pass the corner without stepping into the roadway, and a 50 speed limit sign is visible on the signal pole.", "hazard_reasoning": "There is a black van driving away from the ego car, because of the green light arrow, in front of the ego car. The green arrow indicates permitted movement and the van is pulling ahead-follow it to maintain proper spacing and navigate the intersection safely."}
{"id": "train_08732", "split": "train", "clip_key": "titan_clip_463_000822_movie", "source": {"subset": "titan", "scenario": "clip_463", "frame": "000822"}, "frames": ["titan_clip_463_000822_movie_t-3.jpg", "titan_clip_463_000822_movie_t-2.jpg", "titan_clip_463_000822_movie_t-1.jpg", "titan_clip_463_000822_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked truck", "environment_perception": "A narrow urban street with no marked centerline has dry pavement in good condition and light traffic. Farther ahead on the left, a gray truck is parked along the curb and slightly intrudes into the travel space, narrowing the path. From beside this truck, a man steps off the left sidewalk and moves into the roadway in front of the truck, potentially entering the ego lane. On the right sidewalk, several pedestrians walk along the curb and remain outside the roadway. No traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a gray truck parked on the left side of the road, away from the ego car, because there is no parking spot. This parked truck may obstruct the driver's view and create a potential blind spot, so the driver should be aware and adjust accordingly."}
{"id": "train_08733", "split": "train", "clip_key": "2020-0207-101955_122759_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "122759"}, "frames": ["2020-0207-101955_122759_movie_t-3.jpg", "2020-0207-101955_122759_movie_t-2.jpg", "2020-0207-101955_122759_movie_t-1.jpg", "2020-0207-101955_122759_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and keep a safe distance", "environment_perception": "An urban three-lane arterial runs under an elevated expressway, bordered by a curb and sidewalk on the right; the pavement looks worn but intact, and traffic is heavy and stop-and-go. A white van is directly ahead in the ego lane, stopped because of traffic congestion and blocking the path. In the lane to the left, a pink garbage truck slightly ahead creeps forward with frequent braking, remaining alongside and limiting a merge. Farther ahead in the next lane left, a large box truck crawls with the queue, keeping overall speeds low. Expressway columns line the right edge, creating a narrow shoulder but no immediate obstruction.", "hazard_reasoning": "There is a white van stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain a safe distance and avoid a rear-end collision under these conditions."}
{"id": "train_08734", "split": "train", "clip_key": "titan_clip_332_000360_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_332_000360_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_332_000360_movie_t-3_augB1.jpg", "titan_clip_332_000360_movie_t-2_augB1.jpg", "titan_clip_332_000360_movie_t-1_augB1.jpg", "titan_clip_332_000360_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop for crossing pedestrians", "environment_perception": "An urban shopping street with a narrow single-lane shared roadway is paved with interlocking bricks, lacks a divider, and shows very light vehicle flow amid heavy foot traffic as the ego vehicle creeps forward. Ahead in the lane, two pedestrians wearing a black shirt and a blue shirt cross from the left to the right, moving into the vehicle's path and constraining its pace. Slightly farther ahead, a person in white walks diagonally across toward the right, continuing to pass in front of the car. On the right edge near the storefronts, a pedestrian approaches toward the camera along the curb, staying at the side as the vehicle passes. A blue directional sign and a red circular prohibition sign are visible on a pole at the left.", "hazard_reasoning": "There are two pedestrians wearing a black shirt and blue shirt, crossing from the left to the right side of the road. The driver must stop to avoid a collision with the crossing pedestrians."}
{"id": "train_08735", "split": "train", "clip_key": "2020-0228-102841_000435_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "000435"}, "frames": ["2020-0228-102841_000435_movie_t-3.jpg", "2020-0228-102841_000435_movie_t-2.jpg", "2020-0228-102841_000435_movie_t-1.jpg", "2020-0228-102841_000435_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban side street with no lane markings or median comes into view, the ego-vehicle hugging the left edge as it passes a building entrance; the pavement is smooth and the scene is quiet with negligible traffic. No moving vehicles or pedestrians appear ahead or oncoming, and the roadway remains clear. Two convex mirrors mounted on a pole at the right mark a tight blind corner beside a walled property, while the building's doorway and steps sit immediately at the curb, creating a constrained margin along the path.", "hazard_reasoning": "No hazards are present in this clear urban setting; continue driving as normal."}
{"id": "train_08736", "split": "train", "clip_key": "titan_clip_719_000054_movie", "source": {"subset": "titan", "scenario": "clip_719", "frame": "000054"}, "frames": ["titan_clip_719_000054_movie_t-3.jpg", "titan_clip_719_000054_movie_t-2.jpg", "titan_clip_719_000054_movie_t-1.jpg", "titan_clip_719_000054_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban backstreet with a single narrow shared lane and no centerline runs between storefronts; the asphalt looks worn and traffic is very light. A cyclist carrying a backpack rides ahead in the ego lane, moving away from the car because there is no cycling lane, and the rider's position in the middle of the roadway constrains the ego vehicle's pace. No oncoming vehicles or parked cars encroach on the lane, and no prominent traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a cyclist carrying a backpack, cycling away from the ego car, in the ego lane, because there is no cycling lane. The cyclist is sharing your lane and you should slow down to maintain a safe distance."}
{"id": "train_08737", "split": "train", "clip_key": "2020-0205-103411_105358_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "105358"}, "frames": ["2020-0205-103411_105358_movie_t-3.jpg", "2020-0205-103411_105358_movie_t-2.jpg", "2020-0205-103411_105358_movie_t-1.jpg", "2020-0205-103411_105358_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with dry, well-kept pavement runs straight, bordered on the right by a hatched median and guardrail, and traffic is light to moderate. A white box truck ahead in the ego lane slows, constraining the ego vehicle's pace. A small dark van slightly ahead to the left continues in the adjacent lane at a steady speed and gradually passes without moving toward the ego lane. On the far right shoulder beyond the hatched area, two large semitrailers and a blue flatbed remain parked, reducing the shoulder space but staying outside the travel lanes. An overhead gantry sign is visible.", "hazard_reasoning": "There is a white truck slowing down in the ego lane. The driver should slow down to maintain a safe following distance and prevent a rear-end collision."}
{"id": "train_08738", "split": "train", "clip_key": "titan_clip_768_000474_movie", "source": {"subset": "titan", "scenario": "clip_768", "frame": "000474"}, "frames": ["titan_clip_768_000474_movie_t-3.jpg", "titan_clip_768_000474_movie_t-2.jpg", "titan_clip_768_000474_movie_t-1.jpg", "titan_clip_768_000474_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the turning cyclist.", "environment_perception": "A narrow two-way residential street with edge lines and no centerline runs between closely spaced houses; the pavement looks smooth and traffic is very light with no visible oncoming vehicles. Ahead in the ego path, a cyclist rides away and turns to the left toward the curb into a side street, briefly encroaching on the ego lane. No other moving road users are present, and no traffic signals or posted speed signs are clearly visible.", "hazard_reasoning": "There is a cyclist turning to the left ahead of the ego car. Be aware of the turning cyclist as they may cross into the vehicle's path unexpectedly, requiring you to slow down or steer clear."}
{"id": "train_08739", "split": "train", "clip_key": "titan_clip_892_000108_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_892_000108_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_892_000108_movie_t-3_augB1.jpg", "titan_clip_892_000108_movie_t-2_augB1.jpg", "titan_clip_892_000108_movie_t-1_augB1.jpg", "titan_clip_892_000108_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to the cyclist crossing ahead", "environment_perception": "An urban two-way street lined with shops has a single lane in each direction, no median, and smooth pavement, with light traffic throughout. An oncoming cyclist wearing black pants rides toward the ego vehicle near the middle of the road, briefly occupying the center and potentially encroaching into the ego lane. Two pedestrians on the left walk along the sidewalk near the crosswalk, continuing without stepping into the street. A small white van is stopped at the left curb ahead, and a line of orange cones farther along narrows the left edge of the lane.", "hazard_reasoning": "There is a cyclist wearing black pants and cycling toward the ego car, in the middle of the road. The cyclist is traveling in the center of the lane and may cross the vehicle's path, so the driver should yield to avoid collision."}
{"id": "train_08740", "split": "train", "clip_key": "2020-0228-102841_005794_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "005794"}, "frames": ["2020-0228-102841_005794_movie_t-3.jpg", "2020-0228-102841_005794_movie_t-2.jpg", "2020-0228-102841_005794_movie_t-1.jpg", "2020-0228-102841_005794_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for crossing pedestrian.", "environment_perception": "An urban multi-lane intersection is approached through a work-zone chute that narrows the ego approach to a single lane; pavement is clean and the ego car waits at a red light while cross-street flow is moderate. A cyclist is directly ahead in the center of the junction riding away along the ego path, briefly occupying the lane the ego would take. Several pedestrians cross on the zebra in front from both sides, and one wearing a black jacket and backpack crosses toward the left as the red light gives them right-of-way, keeping the ego stopped. Vehicles on the cross street pass left to right across the ego's view without slowing. Overhead signals facing the ego show solid red, and temporary cones and barricades line both curbs near the stop line.", "hazard_reasoning": "There is a pedestrian wearing a black jacket and backpack, crossing at the pedestrian crossing to the left side, because of the red light. The driver should stop to yield to the pedestrian and avoid a potential collision on the crosswalk."}
{"id": "train_08741", "split": "train", "clip_key": "2020-0203-114632_026710_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "026710"}, "frames": ["2020-0203-114632_026710_movie_t-3.jpg", "2020-0203-114632_026710_movie_t-2.jpg", "2020-0203-114632_026710_movie_t-1.jpg", "2020-0203-114632_026710_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "In a dense urban corridor, the ego car travels on a two-lane road with a bollard-separated side lane on the right; the pavement is dry and traffic is moderate with a queue forming ahead. A black van directly ahead in the ego lane slows because of congestion ahead, constraining the ego vehicle's pace. To the left, a silver mini-van in the adjacent same-direction lane moves slightly faster and passes, occupying space that would allow a lane change. In the right-side separated lane, a white scooter rides straight a little ahead, remaining in its channel as it parallels the ego car. Pedestrians and a bicyclist are on the right sidewalk and stay clear of the road.", "hazard_reasoning": "There is a black van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a potential collision."}
{"id": "train_08742", "split": "train", "clip_key": "titan_clip_273_000738_movie", "source": {"subset": "titan", "scenario": "clip_273", "frame": "000738"}, "frames": ["titan_clip_273_000738_movie_t-3.jpg", "titan_clip_273_000738_movie_t-2.jpg", "titan_clip_273_000738_movie_t-1.jpg", "titan_clip_273_000738_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with one lane each direction has smooth asphalt, blue bicycle markings near the curb, and light traffic as the ego vehicle travels in the left lane. Ahead on the left side of the road, a pedestrian wearing a white shirt and black pants and carrying a bag walks away from the ego vehicle close to the lane, so the person may encroach on the path. In the oncoming lane, a white minibus approaches steadily, reducing passing space. Parked vehicles line the right curb further ahead, narrowing the corridor.", "hazard_reasoning": "A pedestrian wearing a white shirt, black pants and carrying a bag, is walking on the left side of the road, away from the ego car. The pedestrian could step into the lane unexpectedly, so the driver should carefully manoeuvre around to avoid a collision."}
{"id": "train_08743", "split": "train", "clip_key": "2020-0226-140503_010169_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "010169"}, "frames": ["2020-0226-140503_010169_movie_t-3.jpg", "2020-0226-140503_010169_movie_t-2.jpg", "2020-0226-140503_010169_movie_t-1.jpg", "2020-0226-140503_010169_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with multiple lanes in each direction runs straight on smooth pavement, with a low planted median separating oncoming traffic to the left; traffic is light to moderate and flows steadily. A gray van drives ahead in the ego lane at a constant pace, leading the ego vehicle. Farther ahead in the adjacent left lane, a small red truck continues forward in the same direction without changing lanes, remaining clear of the ego path. To the right, a black SUV travels in a parallel side lane beyond diagonal hatch markings near the intersection, moving alongside but remaining separate from the ego lane. Overhead traffic lights span the upcoming junction, and a white delivery truck is parked along the left curb.", "hazard_reasoning": "There is a gray van driving in front of the ego car in the ego lane. The driver should maintain a safe distance and follow the vehicle ahead to ensure adequate reaction time if it slows or stops."}
{"id": "train_08744", "split": "train", "clip_key": "titan_clip_157_000768_movie", "source": {"subset": "titan", "scenario": "clip_157", "frame": "000768"}, "frames": ["titan_clip_157_000768_movie_t-3.jpg", "titan_clip_157_000768_movie_t-2.jpg", "titan_clip_157_000768_movie_t-1.jpg", "titan_clip_157_000768_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "The scene is a narrow two-way urban street with one lane per direction, no median, and dry, slightly worn pavement; traffic is light. Parked vehicles line the left side, narrowing the usable width for the ego vehicle. On the right edge ahead, a pedestrian wearing a white shirt and carrying an umbrella walks away from the ego car in the roadway because there is no sidewalk, close to the ego lane and relevant to the path. A black van stands along the left curb ahead, partly in the lane and limiting room to pass. Far ahead an oncoming car approaches within its lane. A no-parking sign is posted on the left.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and carrying an umbrella, walking on the right side of the road, away from the ego car, because there is no sidewalk. The lack of a sidewalk forces the pedestrian onto the roadway, increasing the risk of collision, so the driver should adjust the path accordingly to avoid them."}
{"id": "train_08745", "split": "train", "clip_key": "2020-0218-103119_010567_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "010567"}, "frames": ["2020-0218-103119_010567_movie_t-3.jpg", "2020-0218-103119_010567_movie_t-2.jpg", "2020-0218-103119_010567_movie_t-1.jpg", "2020-0218-103119_010567_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Brake to avoid collision", "environment_perception": "An urban street with a single narrow lane and a green curbside bike lane approaches a signalized intersection; pavement is clean and traffic is light. A white box truck ahead in the ego lane is stopped at the stop line for a red light, holding the ego vehicle. On the right, a black car on the side street waits at the corner and does not enter the intersection. A pedestrian stands by the right planter near the crosswalk, and several bicycles are parked along the curb.", "hazard_reasoning": "There is a white truck stopped in the ego lane, in front of the ego-car, because of a red traffic light. The driver should brake to avoid a collision with the stopped vehicle ahead."}
{"id": "train_08746", "split": "train", "clip_key": "titan_clip_1216_000462_movie", "source": {"subset": "titan", "scenario": "clip_1216", "frame": "000462"}, "frames": ["titan_clip_1216_000462_movie_t-3.jpg", "titan_clip_1216_000462_movie_t-2.jpg", "titan_clip_1216_000462_movie_t-1.jpg", "titan_clip_1216_000462_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban backstreet with a single mixed-traffic lane and no centerline, bordered by storefronts and curbs, has smooth pavement and light vehicle traffic while many pedestrians share the road. Two men ahead on the left walk along the lane in the same direction, occupying the ego path and constraining pace. In the middle distance, a person holding a skateboard crosses diagonally across the roadway ahead, briefly occupying the ego line. On the left edge, a pedestrian wearing a white shirt, black pants, and a backpack walks away from the ego vehicle along the roadway where there is effectively no sidewalk. Bicycles and planters stand close to the right curb.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, black pants, and carrying a backpack, walking on the left side of the road, away from the ego car, because there is no sidewalk. The pedestrian occupies the travel lane due to lack of sidewalk, increasing collision risk if the driver does not carefully maneuver around them."}
{"id": "train_08747", "split": "train", "clip_key": "2020-0226-101332_031905_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "031905"}, "frames": ["2020-0226-101332_031905_movie_t-3.jpg", "2020-0226-101332_031905_movie_t-2.jpg", "2020-0226-101332_031905_movie_t-1.jpg", "2020-0226-101332_031905_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three or more lanes in the ego direction and a center median has dry, well-marked pavement and moderate, steady traffic. A black sedan ahead in the ego lane cruises straight and governs the ego vehicle's pace. A white van in the left lane farther ahead drives away from the ego car as it proceeds straight. Farther ahead to the right, two large trucks travel in parallel in the right lanes, potentially limiting rightward merges. An overhead blue guide sign indicates upcoming lane options, and a roadside speed-limit sign is visible. Trees and sidewalks line the road, and no obstacles appear in the lanes.", "hazard_reasoning": "There is a white van driving in the left lane, away from the ego car. Following the vehicle ahead on the wet, slippery road helps maintain safe spacing and reduces the risk of losing control when braking."}
{"id": "train_08748", "split": "train", "clip_key": "2020-0131-135401_073494_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "073494"}, "frames": ["2020-0131-135401_073494_movie_t-3.jpg", "2020-0131-135401_073494_movie_t-2.jpg", "2020-0131-135401_073494_movie_t-1.jpg", "2020-0131-135401_073494_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial with smooth pavement and no visible median carries heavy stop-and-go traffic, and an overhead sign indicates three through lanes plus a right-turn lane. Directly ahead in the ego lane, a black hatchback is stopped, holding the ego vehicle in the queue. To the right, a silver van runs alongside at walking pace, edging forward in the adjacent lane and potentially entering the ego lane as space opens. Ahead-right, a black SUV is also stopped by the congestion in the neighboring lane, aligning near the ego lane and contributing to the bottleneck.", "hazard_reasoning": "There is a black SUV stopped in the ego lane, because of traffic congestion ahead. Stop to avoid a collision with the halted vehicle due to congestion."}
{"id": "train_08749", "split": "train", "clip_key": "titan_clip_624_000186_movie", "source": {"subset": "titan", "scenario": "clip_624", "frame": "000186"}, "frames": ["titan_clip_624_000186_movie_t-3.jpg", "titan_clip_624_000186_movie_t-2.jpg", "titan_clip_624_000186_movie_t-1.jpg", "titan_clip_624_000186_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban commercial side street with stone-paved surface and no center line forms a narrow single lane; traffic is light with no moving vehicles, and the pavement looks intact. A gray truck is parked on the left and being unloaded, with workers handling crates at its rear, so their activity juts into the lane and limits the ego-vehicle's usable width. A pedestrian ahead near the cross street walks slightly rightward along the roadway and may step into the ego path as they pass the row of bicycles. Several scooters are parked tight along the right edge, further narrowing clearance. The view opens to a small intersection ahead with shops and signs on both sides.", "hazard_reasoning": "There is a gray truck parked on the left side of the road, because it is being unloaded. This parked vehicle partially blocks the left lane and reduces visibility, so the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_08750", "split": "train", "clip_key": "2020-0129-144857_064758_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "064758"}, "frames": ["2020-0129-144857_064758_movie_t-3.jpg", "2020-0129-144857_064758_movie_t-2.jpg", "2020-0129-144857_064758_movie_t-1.jpg", "2020-0129-144857_064758_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "Urban elevated road in a dense city with two same-direction lanes and guardrails separating a parallel opposite carriageway; the pavement is dry and traffic is heavy and slow as the left lane tapers. A white sedan directly ahead in the ego lane slows to a crawl because of congestion at the merge, constraining the ego vehicle's pace. To the left, several large trucks in the adjacent lane creep forward and edge right toward the taper, preparing to merge and potentially entering the ego lane. Farther ahead, a white van and other cars queue tightly in the same lane, reinforcing the jam. On the parallel roadway to the right, an oncoming car moves steadily behind the barrier and does not interact.", "hazard_reasoning": "There is a white sedan slowing down in the ego lane, because of traffic congestion ahead. The heavy traffic causes abrupt deceleration, so the driver should slow down to maintain a safe following distance."}
{"id": "train_08751", "split": "train", "clip_key": "titan_clip_196_000264_movie", "source": {"subset": "titan", "scenario": "clip_196", "frame": "000264"}, "frames": ["titan_clip_196_000264_movie_t-3.jpg", "titan_clip_196_000264_movie_t-2.jpg", "titan_clip_196_000264_movie_t-1.jpg", "titan_clip_196_000264_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down for cyclist near construction cones", "environment_perception": "A narrow urban two-way street between tall buildings has a single undivided lane with smooth pavement, and traffic flows lightly at a steady pace. On the left edge ahead, a cyclist in a white shirt and black pants rides away from the ego vehicle along a line of construction cones due to roadside work, and may drift into the ego lane. Farther ahead in the same direction, a white car followed by a blue truck proceeds slowly through the narrowed section, setting the pace. Several pedestrians walk on both sidewalks near the curbs without stepping into the road. Orange cones and work activity occupy the left margin, temporarily narrowing the usable lane.", "hazard_reasoning": "There is a cyclist wearing a white shirt and black pants, and cycling on the left side of the road, away from the ego-car, because of construction work on the left. The cyclist's path is shifted toward the vehicle's lane by the cones, requiring the driver to slow down to maintain a safe distance and avoid collision."}
{"id": "train_08752", "split": "train", "clip_key": "2020-0220-102630_109710_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "109710"}, "frames": ["2020-0220-102630_109710_movie_t-3.jpg", "2020-0220-102630_109710_movie_t-2.jpg", "2020-0220-102630_109710_movie_t-1.jpg", "2020-0220-102630_109710_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down to maintain a safe following distance", "environment_perception": "An urban two-way road with two same-direction lanes approaches a signalized intersection; the pavement is dry and a small raised median divides the lanes near the junction, with moderate traffic overall. A silver truck ahead in the ego lane slows in the middle of the intersection to make a left turn, constraining the ego vehicle's pace. On the right side of the frame, two oncoming minivans proceed straight through their lanes past the intersection without conflicting with the ego lane. At the left corner by a gas station, a white car waits at the side street and may enter across the ego path after the truck turns.", "hazard_reasoning": "There is a silver truck slowing in the ego lane, in the middle of the intersection, because they are making a left turn. The truck's deceleration to execute the turn could lead to a sudden speed reduction, so the driver should slow down to maintain a safe following distance."}
{"id": "train_08753", "split": "train", "clip_key": "2020-0226-140503_090963_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "090963"}, "frames": ["2020-0226-140503_090963_movie_t-3.jpg", "2020-0226-140503_090963_movie_t-2.jpg", "2020-0226-140503_090963_movie_t-1.jpg", "2020-0226-140503_090963_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around parked van", "environment_perception": "An urban two-way street with one narrow lane per direction runs between mid-rise buildings, the pavement dry and intact as the road curves gently right; traffic is light with no oncoming vehicles visible. A white van is parked in the ego lane along the left curb ahead, occupying part of the lane and narrowing the passage. Farther ahead in the same direction, a dark car travels away near the curve at a modest speed, loosely setting the pace. Parked vehicles line the curbs and closely spaced trees and utility poles reduce lateral clearance, and no pedestrians are in the roadway.", "hazard_reasoning": "There is a white van parked in the ego lane, on the left side of the road. The stationary van obstructs the driving lane, requiring careful manoeuvring to avoid collision."}
{"id": "train_08754", "split": "train", "clip_key": "2020-0210-142719_003241_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "003241"}, "frames": ["2020-0210-142719_003241_movie_t-3.jpg", "2020-0210-142719_003241_movie_t-2.jpg", "2020-0210-142719_003241_movie_t-1.jpg", "2020-0210-142719_003241_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-lane one-way street approaches a railway overpass, with dashed lane markings and fair pavement; traffic is moderate and moves slowly due to curbside parking that narrows the left lane. Ahead in the ego lane, a cyclist in a black top carrying a handbag rides away near the center of the lane because the sidewalk is blocked by parked trucks and vans, and she constrains the ego vehicle's pace. Farther ahead in the same lane, a small white car proceeds toward the underpass at low speed. In the right lane, a white box truck advances parallel, gradually overtaking. Height restriction signs are posted on the overpass. Numerous parked work trucks line the left curb, creating a continuous obstacle.", "hazard_reasoning": "There is a cyclist wearing a black shirt, carrying a handbag, cycling in the middle of the road, away from the ego car, because the sidewalk is blocked by vehicles. The cyclist's presence in the traffic lane increases collision risk, so the driver should slow down to maintain a safe distance."}
{"id": "train_08755", "split": "train", "clip_key": "2020-0218-151547_028479_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "028479"}, "frames": ["2020-0218-151547_028479_movie_t-3.jpg", "2020-0218-151547_028479_movie_t-2.jpg", "2020-0218-151547_028479_movie_t-1.jpg", "2020-0218-151547_028479_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban divided arterial under an elevated expressway carries two lanes in the ego direction plus a curbside bicycle lane; pavement is good and traffic flows at a moderate pace. A white hatchback directly ahead in the left ego lane proceeds slowly along the bike-lane markings, constraining the ego car's pace and partly blocking the bicycle lane. In the right lane slightly ahead, a small white van continues straight at a similar speed. Farther ahead, several cars travel steadily in both lanes.", "hazard_reasoning": "There's a cyclist wearing black and a cap riding on the right-hand side of the ego-car lane because another vehicle is blocking the bike lane. The cyclist is forced into the main lane, increasing collision risk if not given space, so the driver should manoeuvre carefully around the cyclist."}
{"id": "train_08756", "split": "train", "clip_key": "titan_clip_948_000366_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_948_000366_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_948_000366_movie_t-3_augB1.jpg", "titan_clip_948_000366_movie_t-2_augB1.jpg", "titan_clip_948_000366_movie_t-1_augB1.jpg", "titan_clip_948_000366_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be aware of cyclist ahead", "environment_perception": "An urban two-way street leads to a level railway crossing with green-painted panels; the single carriageway is smooth and traffic is light. A cyclist in a white shirt rides ahead in the middle of the road moving away from the ego car, effectively setting the pace as they continue over the tracks. Another cyclist comes from the right near the crossing and proceeds straight ahead across the rails, briefly occupying the ego vehicle's path. A pedestrian further ahead crosses the tracks and continues along the center of the approach, remaining in the lane the car would take. The railway crossing equipment is visible with gates raised and signal lights inactive. A black-and-yellow barricade sits on the near-right shoulder beside the rails.", "hazard_reasoning": "There is a cyclist wearing a white shirt and cycling in the middle of the road, away from the ego car. The cyclist's position may require you to adjust your speed or steering to maintain a safe distance and avoid a collision."}
{"id": "train_08757", "split": "train", "clip_key": "2020-0204-150838_021727_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "021727"}, "frames": ["2020-0204-150838_021727_movie_t-3.jpg", "2020-0204-150838_021727_movie_t-2.jpg", "2020-0204-150838_021727_movie_t-1.jpg", "2020-0204-150838_021727_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Start moving cautiously to avoid collision with scooter.", "environment_perception": "An urban divided road with two same-direction lanes has smooth pavement and moderate traffic that slows into a short queue ahead. Directly in front of the ego car, a white scooter in the ego lane starts moving forward as the queue ahead begins to move, briefly setting the ego vehicle's pace. Farther ahead in the same lane, a small white van proceeds slowly with the line of vehicles, limiting how quickly the scooter and ego can accelerate. In the adjacent right lane, a black taxi and several cars continue straight at a steadier speed, passing the slower left lane. A chain-posted sidewalk lines the left.", "hazard_reasoning": "There is a white scooter starting to move in the ego lane, because traffic congestion ahead is easing, in front of the ego car. The driver should start moving cautiously to avoid collision with the merging scooter."}
{"id": "train_08758", "split": "train", "clip_key": "titan_clip_414_000390_movie", "source": {"subset": "titan", "scenario": "clip_414", "frame": "000390"}, "frames": ["titan_clip_414_000390_movie_t-3.jpg", "titan_clip_414_000390_movie_t-2.jpg", "titan_clip_414_000390_movie_t-1.jpg", "titan_clip_414_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre around the pedestrians", "environment_perception": "An urban two-way street with one narrow lane in each direction, no median, and smooth asphalt carries light traffic as the ego car proceeds in the left lane past storefronts. On the left side ahead, three people wearing white shirts and blue pants, carrying handbags, walk away from the ego car along the roadway, partially occupying the ego lane and constraining its pace. In the opposite lane to the right, a black SUV approaches near the curb at low speed and passes by without encroaching. Farther ahead, a small vehicle continues in the same direction in the distance.", "hazard_reasoning": "There are three men wearing white shirts and blue pants, carrying handbags, and walking away from the ego car, on the left side of the road. The pedestrians are close to the roadway edge and may step into the lane, so the driver should manoeuvre around them to avoid a collision."}
{"id": "train_08759", "split": "train", "clip_key": "2020-0212-102546_013261_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "013261"}, "frames": ["2020-0212-102546_013261_movie_t-3.jpg", "2020-0212-102546_013261_movie_t-2.jpg", "2020-0212-102546_013261_movie_t-1.jpg", "2020-0212-102546_013261_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban one-way road with two same-direction lanes has smooth pavement and light traffic. Cones and a red barricade with a left-pointing arrow close the right lane and channel vehicles left. A white box truck directly ahead in the left lane accelerates away, effectively setting the ego car's pace. No pedestrians or oncoming vehicles are visible, and the sidewalks and roadside remain clear as the scene progresses past the work-zone taper.", "hazard_reasoning": "There is a white truck accelerating in front of the ego car. The driver should accelerate to maintain a safe following distance and avoid a collision as the truck speeds up."}
{"id": "train_08760", "split": "train", "clip_key": "2020-0203-114632_074570_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "074570"}, "frames": ["2020-0203-114632_074570_movie_t-3.jpg", "2020-0203-114632_074570_movie_t-2.jpg", "2020-0203-114632_074570_movie_t-1.jpg", "2020-0203-114632_074570_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes and a curb on the left shows dry pavement and heavy, slow-moving traffic. Ahead in the leftmost ego lane, a gray minivan slows to a crawl because of congestion ahead, directly constraining the ego car's pace. In the adjacent right lane, a line of silver vans and box trucks creeps forward beside the ego path, leaving little gap for lane changes. Farther ahead in the same direction, a large construction truck sits in the queue, adding to the blockage. An overhead traffic signal spans the road where vehicles bunch near the intersection.", "hazard_reasoning": "There is a gray van slowing in the ego-car lane, because of traffic congestion ahead. The gray van is slowing abruptly due to congestion, so the driver must slow down to maintain a safe following distance and prevent a collision."}
{"id": "train_08761", "split": "train", "clip_key": "2020-0204-103442_002701_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "002701"}, "frames": ["2020-0204-103442_002701_movie_t-3.jpg", "2020-0204-103442_002701_movie_t-2.jpg", "2020-0204-103442_002701_movie_t-1.jpg", "2020-0204-103442_002701_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of crossing pedestrians.", "environment_perception": "An urban junction appears with a wide single carriageway bending right, a painted chevron gore, and a small railed island; the pavement is smooth and dry, and there is no vehicle traffic, so flow is very light. Ahead on the right side, two pedestrians wearing black pants are crossing the street toward the center, potentially entering the ego vehicle's path and constraining its approach. Farther right near the sidewalk, another pedestrian continues along the curb without stepping into the roadway. Construction hoarding and fencing line the far side of the junction, creating a partial visual barrier.", "hazard_reasoning": "There are two pedestrians, wearing black pants, crossing the street, at the left side of the road, left of the ego-car. The pedestrians may step into the vehicle's path unexpectedly, so the driver should be aware of crossing pedestrians to avoid a collision."}
{"id": "train_08762", "split": "train", "clip_key": "2020-0131-135401_004230_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "004230"}, "frames": ["2020-0131-135401_004230_movie_t-3.jpg", "2020-0131-135401_004230_movie_t-2.jpg", "2020-0131-135401_004230_movie_t-1.jpg", "2020-0131-135401_004230_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop promptly behind the truck", "environment_perception": "An urban two-way street with one narrow lane each direction runs between apartments and a fence, the pavement is smooth and traffic appears light. A white box truck is stopped directly ahead in the ego lane, constraining the ego car's path. On the left, a pedestrian walks toward the camera along the raised side path near the curb but stays off the roadway. Farther ahead on the left sidewalk, a small group of pedestrians walks away from the camera and remains separated from traffic. An overhead sign shows a 40 speed limit. Bright sun glare from the upper right reduces contrast in the scene.", "hazard_reasoning": "A white truck is stopped in front of the ego car, in the ego lane. The truck's unexpected stop ahead poses a collision risk if the driver does not stop promptly."}
{"id": "train_08763", "split": "train", "clip_key": "titan_clip_944_000528_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_944_000528_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_944_000528_movie_t-3_augB1.jpg", "titan_clip_944_000528_movie_t-2_augB1.jpg", "titan_clip_944_000528_movie_t-1_augB1.jpg", "titan_clip_944_000528_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single mixed-traffic lane and bollards along the right sidewalk runs past storefronts; the asphalt is smooth. Traffic is light and slowed by a large delivery truck stopped on the left with its rear door open, intruding into the lane. Ahead in the center, a pedestrian in a white T-shirt walks away from the ego vehicle in the middle of the road, keeping clear of the parked vehicle on the left and remaining in the vehicle's path. Slightly farther ahead, a cyclist rides in the same direction near the lane center at a steady pace, further constraining speed. At the back of the truck on the left, a worker stands beside the open cargo area near the travel lane. Bollards and parked items along the right edge narrow the corridor.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, walking in the middle of the road, away from the ego car, because of the parked vehicle on the left. The obstructed sidewalk and truck-blocked view force the pedestrian into the roadway, increasing collision risk, so you should slow down."}
{"id": "train_08764", "split": "train", "clip_key": "2020-0227-153144_004868_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "004868"}, "frames": ["2020-0227-153144_004868_movie_t-3.jpg", "2020-0227-153144_004868_movie_t-2.jpg", "2020-0227-153144_004868_movie_t-1.jpg", "2020-0227-153144_004868_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs between tall buildings with smooth, dry pavement. The ego vehicle travels in the left lane of a two-way road, separated from oncoming traffic on the right by a metal-railed median, and flow is moderate with a queue at a signalized intersection. A gray coupe directly ahead in the ego lane is stopped because the traffic light ahead is red, holding the ego vehicle. Cars in the adjacent left lane are also lined up and stationary, forming a parallel queue that limits lane changes. On the right beyond the median, oncoming cars and vans continue through the junction and do not enter the ego lane. The overhead signal facing the ego shows red.", "hazard_reasoning": "There is a gray coupe stopped in the ego lane because of a red traffic light ahead. This halt indicates the light has turned red, so the driver must brake to avoid a collision and comply with traffic signals."}
{"id": "train_08765", "split": "train", "clip_key": "titan_clip_144_000252_movie", "source": {"subset": "titan", "scenario": "clip_144", "frame": "000252"}, "frames": ["titan_clip_144_000252_movie_t-3.jpg", "titan_clip_144_000252_movie_t-2.jpg", "titan_clip_144_000252_movie_t-1.jpg", "titan_clip_144_000252_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban intersection on a two-way street with one lane each direction is shown, the pavement is smooth and traffic is light. A pedestrian wearing a black dress and carrying an umbrella crosses the zebra crosswalk from right to left directly ahead, occupying the ego lane and constraining progress. Ahead in the same lane, a small scooter moves slowly through the junction, remaining in front of the ego vehicle and limiting speed. Farther ahead near the centerline, a black SUV waits at the intersection, keeping a short queue in the ego's direction.", "hazard_reasoning": "There is a pedestrian wearing a black dress, carrying an umbrella, crossing in the crosswalk, from the right side to the left. The driver should stop to allow the pedestrian to cross safely and prevent a collision."}
{"id": "train_08766", "split": "train", "clip_key": "titan_clip_102_000516_movie", "source": {"subset": "titan", "scenario": "clip_102", "frame": "000516"}, "frames": ["titan_clip_102_000516_movie_t-3.jpg", "titan_clip_102_000516_movie_t-2.jpg", "titan_clip_102_000516_movie_t-1.jpg", "titan_clip_102_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with brick paving and a single narrow lane runs between tall shopfronts, with no median and light, slow traffic. A pedestrian wearing a white T-shirt and carrying a handbag walks ahead along the left side of the road away from the ego car, keeping close to the edge but within the travel space. A white van stands stopped at the right curb ahead, narrowing the lane and creating a pinch point. Another pedestrian at the right storefront steps toward the curb and then lingers near the edge. Farther ahead, a few cars continue in the same direction down the lane, moving steadily. Green cones line the left margin and storefront awnings and an overhead walkway frame the corridor.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, carrying a handbag, walking on the left side of the road, away from the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a potential collision as they are close to the travel lane."}
{"id": "train_08767", "split": "train", "clip_key": "2020-0226-140503_085775_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "085775"}, "frames": ["2020-0226-140503_085775_movie_t-3.jpg", "2020-0226-140503_085775_movie_t-2.jpg", "2020-0226-140503_085775_movie_t-1.jpg", "2020-0226-140503_085775_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A busy urban arterial with three lanes in each direction and a central median carries heavy, slow traffic toward a signalized intersection on dry, worn pavement. Directly ahead, a white hatchback in the ego lane slows on the right side of the intersection, waiting to turn right because oncoming traffic prevents the maneuver. Ahead-right, a scooter rider threads forward between lanes and passes through the junction, briefly entering the area ahead of the ego vehicle. Ahead-left, a large cement mixer truck in the neighboring lane crawls forward and helps set the overall pace. On the opposite side of the median, oncoming vehicles including a white car and a van proceed through the intersection toward the camera, keeping priority over the turning hatchback. A green traffic signal is visible above the junction.", "hazard_reasoning": "There is a white hatchback slowing in the right side of an intersection in the ego lane because of traffic coming from the opposite direction. The driver should slow down to maintain a safe following distance and avoid a rear-end collision as the lead vehicle decelerates."}
{"id": "train_08768", "split": "train", "clip_key": "2020-0129-105040_091045_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "091045"}, "frames": ["2020-0129-105040_091045_movie_t-3.jpg", "2020-0129-105040_091045_movie_t-2.jpg", "2020-0129-105040_091045_movie_t-1.jpg", "2020-0129-105040_091045_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A sunny, tree-lined urban boulevard with two lanes per direction and a low planted median stretches ahead; the pavement looks smooth and traffic is moderate with steady movement in both directions. A white mini truck directly ahead in the ego lane slows due to a line of vehicles ahead. Farther along the same lane, a small white hatchback travels steadily and sets the pace that the truck follows. In the adjacent right lane, a white van and a black SUV run slightly ahead and continue forward, limiting immediate room to merge. Oncoming cars move on the far side of the median and remain separated from the ego lane.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because of traffic congestion ahead. Slow down to maintain a safe distance from the truck and avoid collision."}
{"id": "train_08769", "split": "train", "clip_key": "titan_clip_258_000120_movie", "source": {"subset": "titan", "scenario": "clip_258", "frame": "000120"}, "frames": ["titan_clip_258_000120_movie_t-3.jpg", "titan_clip_258_000120_movie_t-2.jpg", "titan_clip_258_000120_movie_t-1.jpg", "titan_clip_258_000120_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with no center divider and smooth pavement unfolds ahead, and traffic is light with no moving vehicles besides the ego car. Parked cars line both sides, slightly narrowing the ego lane on the left. On the right edge a pedestrian wearing a white hat walks away from the camera while pulling a trolley, staying near the curb but aligned with the ego lane and potentially affecting its path. Farther ahead along the left side another person walks near the storefronts without entering the roadway. A large stop marking is painted on the pavement before a small junction, and utility poles and bicycles cluster along the left sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a white hat, walking, and pulling a trolley away from the ego car, on the right side of the road. The pedestrian is close to the vehicle's path and may change direction, so the driver should carefully manoeuvre around them to maintain a safe distance."}
{"id": "train_08770", "split": "train", "clip_key": "2020-0228-102841_054458_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "054458"}, "frames": ["2020-0228-102841_054458_movie_t-3.jpg", "2020-0228-102841_054458_movie_t-2.jpg", "2020-0228-102841_054458_movie_t-1.jpg", "2020-0228-102841_054458_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane intersection under an elevated roadway has smooth pavement and no median, with moderate cross traffic as the ego car waits at the stop line. A cyclist wearing a brown jacket and white shoes rides from the left across the near crosswalk directly in front of the ego vehicle, continuing to the right and briefly blocking its path. Ahead in the intersection a small silver van moves right to left across the ego's lane as it clears the crossing, further delaying any start. On the far side, a line of oncoming cars stand in their lane at the light. A pedestrian signal on the left shows red even as the cyclist proceeds.", "hazard_reasoning": "There is a cyclist wearing a brown jacket and white shoes, cycling across in a crosswalk, in front of the ego-car. The driver needs to stop immediately to avoid colliding with the cyclist crossing ahead."}
{"id": "train_08771", "split": "train", "clip_key": "2020-0214-145407_008607_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "008607"}, "frames": ["2020-0214-145407_008607_movie_t-3.jpg", "2020-0214-145407_008607_movie_t-2.jpg", "2020-0214-145407_008607_movie_t-1.jpg", "2020-0214-145407_008607_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down due to congestion ahead", "environment_perception": "An urban multi-lane surface road curves left beneath an elevated ramp, the pavement dry and slightly worn, with moderate traffic that compresses ahead. A white van directly ahead in the ego lane slows because of congestion in front, constraining the ego-car's pace. To the left edge, a yellow cement mixer truck waits at a side entry, yielding and possibly preparing to merge into the through lane. On the right shoulder, a silver van stands stopped near the curb, close to the lane line but outside the ego path. Farther ahead in the adjacent left lane, a small kei van moves slowly with the same flow under the overpass.", "hazard_reasoning": "There is a white van slowing down ahead of the ego-car in the ego lane because of traffic congestion ahead. The driver should slow down due to the traffic congestion ahead to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_08772", "split": "train", "clip_key": "titan_clip_69_000498_movie", "source": {"subset": "titan", "scenario": "clip_69", "frame": "000498"}, "frames": ["titan_clip_69_000498_movie_t-3.jpg", "titan_clip_69_000498_movie_t-2.jpg", "titan_clip_69_000498_movie_t-1.jpg", "titan_clip_69_000498_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with closely spaced buildings forms a narrow two-way road without a median and with smooth pavement, and traffic is light. Ahead in the ego lane an orange bus slows while rolling forward, constraining the ego vehicle's pace. On the left edge a pedestrian stands beside a row of parked vans close to the travel lane and may step into the lane, making them relevant to the ego path. Another pedestrian waits on the right sidewalk but remains clear of the roadway. A 30 speed-limit sign is visible on the left, and the parked vehicles along the left side narrow the usable lane.", "hazard_reasoning": "There is an orange bus slowing in the ego lane, in front of the ego car. The bus's reduction in speed ahead creates a risk of collision if the driver does not slow down to maintain a safe distance."}
{"id": "train_08773", "split": "train", "clip_key": "titan_clip_852_000126_movie", "source": {"subset": "titan", "scenario": "clip_852", "frame": "000126"}, "frames": ["titan_clip_852_000126_movie_t-3.jpg", "titan_clip_852_000126_movie_t-2.jpg", "titan_clip_852_000126_movie_t-1.jpg", "titan_clip_852_000126_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow shared lane and no centerline curves ahead; brick pavement is clean, bollards line both sides, and there are no other vehicles so traffic is light. Directly ahead in the ego path, a woman wearing a short black skirt, a brown top, black shoes, and a backpack crosses the road in front of the car. On the left near the curb, a person in blue waits at the edge near the lane. Farther ahead by the right-hand storefronts, another pedestrian steps off the sidewalk and walks along the edge close to the lane.", "hazard_reasoning": "There a woman wearing a short black skirt, a brown top, black shoes, carrying a backpack, crossing the road in front of the ego car. Drivers should slow down to yield to the pedestrian crossing directly ahead and prevent a collision."}
{"id": "train_08774", "split": "train", "clip_key": "2020-0225-102455_017121_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_017121_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_017121_movie_t-3_augB1.jpg", "2020-0225-102455_017121_movie_t-2_augB1.jpg", "2020-0225-102455_017121_movie_t-1_augB1.jpg", "2020-0225-102455_017121_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of truck merging left", "environment_perception": "An urban multi-lane arterial with chevron buffers and no median comes into view, the pavement dry and smooth and overall traffic moderate and steady. A white box truck directly ahead moves left, changing into the left lane in front of the ego car and briefly constraining its pace. To the right, several cars in the adjacent lanes continue straight at a steady speed, some overtaking the ego vehicle. Along the left curb, parked vehicles remain stationary, narrowing space beside the merging truck.", "hazard_reasoning": "There is a white truck changing lanes in front of the ego car, to the left lane. The truck's lane change could affect the ego vehicle's path, so the driver should stay alert and ready to adjust speed."}
{"id": "train_08775", "split": "train", "clip_key": "titan_clip_1027_000456_movie", "source": {"subset": "titan", "scenario": "clip_1027", "frame": "000456"}, "frames": ["titan_clip_1027_000456_movie_t-3.jpg", "titan_clip_1027_000456_movie_t-2.jpg", "titan_clip_1027_000456_movie_t-1.jpg", "titan_clip_1027_000456_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van", "environment_perception": "A narrow urban two-way street with no median and smooth pavement shows light traffic as the vehicle proceeds along the left lane. A white minivan is parked on the left side of the road just ahead, narrowing the lane and requiring a pass to the right. Farther ahead, an oncoming white van advances in the opposite lane, reducing the space available while overtaking the parked vehicle. Buildings and utility poles line both sides, and no notable signals or posted speeds are visible.", "hazard_reasoning": "There is a white minivan parked on the left side of the road. This reduces the available lane width and may force you to manoeuvre around it to avoid collision with passing traffic."}
{"id": "train_08776", "split": "train", "clip_key": "titan_clip_1140_000072_movie", "source": {"subset": "titan", "scenario": "clip_1140", "frame": "000072"}, "frames": ["titan_clip_1140_000072_movie_t-3.jpg", "titan_clip_1140_000072_movie_t-2.jpg", "titan_clip_1140_000072_movie_t-1.jpg", "titan_clip_1140_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban residential street without a centerline runs straight ahead, bordered by a high wall on the left and apartment fa?ades on the right; the dry asphalt shows some patching and shadows. Traffic is light, with no vehicles ahead or oncoming. Far ahead in the middle of the roadway, a pedestrian in black pants and a white shirt walks away from the ego vehicle along the lane, potentially occupying the ego path and affecting the vehicle's approach. A few orange posts line the left edge near the wall, and a small white roadside barrier appears on the right, but no other notable obstacles are present.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, walking in the middle of the road, away from the ego car. The driver should carefully manoeuvre around this pedestrian to avoid a collision."}
{"id": "train_08777", "split": "train", "clip_key": "2020-0225-145150_029420_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "029420"}, "frames": ["2020-0225-145150_029420_movie_t-3.jpg", "2020-0225-145150_029420_movie_t-2.jpg", "2020-0225-145150_029420_movie_t-1.jpg", "2020-0225-145150_029420_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth asphalt runs between mid-rise buildings, divided by a low hedge; a marked gore on the right is present and traffic in the ego's direction moves slowly. A blue truck directly ahead in the ego lane slows because of traffic congestion ahead, constraining the ego car. A line of white cars farther ahead continues slowly in the same direction, forming the queue. A silver van in the adjacent right lane travels straight at a similar pace. No traffic signals are clearly visible.", "hazard_reasoning": "A blue truck slowing down in front of the ego car, because of traffic congestion ahead. The slowing truck indicates congestion ahead, so the driver should slow down to maintain a safe following distance."}
{"id": "train_08778", "split": "train", "clip_key": "titan_clip_623_000210_movie", "source": {"subset": "titan", "scenario": "clip_623", "frame": "000210"}, "frames": ["titan_clip_623_000210_movie_t-3.jpg", "titan_clip_623_000210_movie_t-2.jpg", "titan_clip_623_000210_movie_t-1.jpg", "titan_clip_623_000210_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked vehicles ahead", "environment_perception": "An urban backstreet with a stone-paved surface and no marked lanes appears narrow and two-way, with buildings tight to the curb and very light traffic. Ahead on the left, a small green truck is parked partially in the travel path, narrowing the ego vehicle's passage. On the right in the foreground, a pedestrian stands by railings and a sidewalk sign, stationary close to the roadway. Farther ahead on the right, a white van is parked at the curb, further constricting space.", "hazard_reasoning": "There is a green truck parked on the left side of the road. A parked vehicle may obstruct visibility and reduce available lane width, so the driver should stay alert for limited clearance."}
{"id": "train_08779", "split": "train", "clip_key": "titan_clip_855_000378_movie", "source": {"subset": "titan", "scenario": "clip_855", "frame": "000378"}, "frames": ["titan_clip_855_000378_movie_t-3.jpg", "titan_clip_855_000378_movie_t-2.jpg", "titan_clip_855_000378_movie_t-1.jpg", "titan_clip_855_000378_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban service street with a single left-side lane and no median runs beside large commercial buildings; the dry, slightly worn asphalt narrows around loading activity, and traffic is light with intermittent slowdowns. Ahead in the middle of the lane, a man wearing a baseball cap pushes a metallic cart toward the ego vehicle, walking there because blue containers and dollies crowd the right edge and push him outward. To the right, a box truck is stopped with its cargo area open while staff handle carts and equipment that partly intrude into the lane, limiting the ego vehicle's speed. On the left, a small white car is stopped near the curb and protrudes slightly into the travel lane, further squeezing the passage. A blue pedestrian crossing sign is visible on the left.", "hazard_reasoning": "There is a man wearing a baseball cap, pushing a metallic cart, and walking in the middle of road towards the ego car because of containers and dollies on the right side. The pedestrian is walking in the roadway ahead, so the driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_08780", "split": "train", "clip_key": "2020-0228-102841_081435_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "081435"}, "frames": ["2020-0228-102841_081435_movie_t-3.jpg", "2020-0228-102841_081435_movie_t-2.jpg", "2020-0228-102841_081435_movie_t-1.jpg", "2020-0228-102841_081435_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop.", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and no median; the pavement is smooth and traffic is heavy and mostly stopped. A red motorcycle directly ahead in the ego lane is stationary because the signal ahead is red, holding the ego car at a stop. Just beyond it, a yellow box truck in the same lane waits at the head of the queue, further limiting visibility and movement. In the adjacent lanes, a white sedan to the left and several vans to the right are stopped alongside, creeping intermittently and leaving little space to merge. Construction structures line the left side but do not intrude into the roadway.", "hazard_reasoning": "There is a red motorcycle stopped in the ego lane, in front of the ego car, because of the red traffic lights ahead. You must stop to avoid a collision with the stationary motorcycle while obeying the red signal."}
{"id": "train_08781", "split": "train", "clip_key": "2020-0203-154554_080169_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "080169"}, "frames": ["2020-0203-154554_080169_movie_t-3.jpg", "2020-0203-154554_080169_movie_t-2.jpg", "2020-0203-154554_080169_movie_t-1.jpg", "2020-0203-154554_080169_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with multiple same-direction lanes and a painted hatched shoulder shows smooth pavement and heavy, slow-moving traffic. A white hatchback directly ahead in the ego lane slows and inches forward because of congestion, constraining the ego car's pace. To the left, a black sedan in the adjacent lane creeps alongside at similar speed, keeping close to the ego lane. Farther ahead, several white vans and other cars queue in both lanes and brake intermittently, maintaining the bottleneck. Low sun ahead through roadside trees causes noticeable glare across the scene.", "hazard_reasoning": "There is a white hatchback, slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The deceleration increases the risk of a rear-end collision, so the driver should slow down to maintain a safe following distance."}
{"id": "train_08782", "split": "train", "clip_key": "titan_clip_501_000180_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_501_000180_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_501_000180_movie_t-3_augB1.jpg", "titan_clip_501_000180_movie_t-2_augB1.jpg", "titan_clip_501_000180_movie_t-1_augB1.jpg", "titan_clip_501_000180_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with block-paved surface and no centerline runs between dense storefronts, and traffic is light as the ego vehicle proceeds along the left side. In the center ahead, a pedestrian in an orange dress carrying an umbrella and handbag walks toward the camera in the middle of the roadway, directly in the ego path. Farther ahead, an oncoming bicyclist rides toward the ego near the center of the street, converging on the same space. A silver van ahead on the left moves slowly and edges toward the curb as if pulling over, reducing clearance in the lane. Roadside vending machines and signboards crowd the curb but do not intrude into the roadway.", "hazard_reasoning": "There is a pedestrian wearing an orange dress, carrying an umbrella and handbag, walking in the middle of the road, towards the ego car. The driver should carefully manoeuvre around the pedestrian to avoid collision as they are directly in the vehicle's path."}
{"id": "train_08783", "split": "train", "clip_key": "2020-0212-102546_055648_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "055648"}, "frames": ["2020-0212-102546_055648_movie_t-3.jpg", "2020-0212-102546_055648_movie_t-2.jpg", "2020-0212-102546_055648_movie_t-1.jpg", "2020-0212-102546_055648_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "An urban arterial with two same-direction lanes is divided from oncoming traffic by a low hedge median; the pavement looks smooth and traffic flows slowly in a short queue ahead. A silver van directly ahead in the ego lane slows and bunches up to the vehicles in front, constraining the ego car because of traffic congestion ahead. A motor scooter slightly ahead in the left lane continues straight at a steady pace, staying in its lane and not entering the ego path. Farther ahead, multiple cars in both same-direction lanes move slowly, forming the queue that limits progress.", "hazard_reasoning": "There is a silver van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and adapt to the reduced traffic flow."}
{"id": "train_08784", "split": "train", "clip_key": "2020-0213-143552_043226_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "043226"}, "frames": ["2020-0213-143552_043226_movie_t-3.jpg", "2020-0213-143552_043226_movie_t-2.jpg", "2020-0213-143552_043226_movie_t-1.jpg", "2020-0213-143552_043226_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane arterial runs beneath elevated expressways, with smooth pavement and yellow solid lines separating lanes; traffic is moderate to heavy and slows near a junction. A white box truck ahead in the ego lane slows and constrains the ego car's pace. A black van immediately to the right creeps forward alongside the truck's rear and may edge into the ego lane. A white minivan ahead to the left proceeds steadily in the adjacent lane, offering a nearby parallel flow. Overhead blue direction signs span the roadway, indicating an upcoming split.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The driver should prepare to adjust speed and maintain a safe following distance to avoid a rear-end collision under these conditions."}
{"id": "train_08785", "split": "train", "clip_key": "titan_clip_744_000192_movie", "source": {"subset": "titan", "scenario": "clip_744", "frame": "000192"}, "frames": ["titan_clip_744_000192_movie_t-3.jpg", "titan_clip_744_000192_movie_t-2.jpg", "titan_clip_744_000192_movie_t-1.jpg", "titan_clip_744_000192_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian.", "environment_perception": "An urban commercial backstreet with a single narrow carriageway and no centerline appears well paved, with essentially no vehicular traffic and a shared flow with pedestrians. Cones and materials tighten the left edge while many parked bicycles crowd the right, further narrowing the lane. A man in a striped shirt carrying a backpack walks along the right side toward the ego-vehicle because the parked bicycles block his path, so he encroaches on the roadway and could enter the ego path. Several pedestrians are farther ahead in the middle of the lane, strolling away from the camera and loosely spread, which constrains speed. Another person lingers near the left-side cones and edges outward, creating an additional pinch point.", "hazard_reasoning": "There is a man wearing a striped shirt, carrying a backpack, and walking on the right side of the road, towards the ego-car, because of the parked bicycles. The driver should carefully manoeuvre around him to avoid collision as he approaches the vehicle."}
{"id": "train_08786", "split": "train", "clip_key": "2020-0217-110854_047103_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "047103"}, "frames": ["2020-0217-110854_047103_movie_t-3.jpg", "2020-0217-110854_047103_movie_t-2.jpg", "2020-0217-110854_047103_movie_t-1.jpg", "2020-0217-110854_047103_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street runs under an elevated expressway with a single through lane in the ego direction, no median, smooth pavement, and light traffic. A black van ahead in the ego lane pulls away from the camera as the lane ahead is clear, increasing the gap. Farther ahead in the same direction, a small car proceeds steadily without constraining the ego vehicle. To the right, a short side road merges toward the ego lane but remains empty. A traffic signal hangs at the next intersection under the structure.", "hazard_reasoning": "There is a black van driving in the ego lane, away from the ego car, because the traffic is clear ahead. The van could brake suddenly, so follow it at a safe distance to avoid collision."}
{"id": "train_08787", "split": "train", "clip_key": "2020-0228-102841_038792_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "038792"}, "frames": ["2020-0228-102841_038792_movie_t-3.jpg", "2020-0228-102841_038792_movie_t-2.jpg", "2020-0228-102841_038792_movie_t-1.jpg", "2020-0228-102841_038792_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial with smooth pavement runs between tall buildings, and same-direction traffic is moderate to heavy, bunching into a slow queue ahead. Ahead in the ego lane, a white hatchback slows because of congestion and directly sets the ego vehicle's pace. To the right, a white SUV in the adjacent lane creeps forward alongside close to the ego car, limiting a right-lane change. Farther ahead in the right lane, a small white truck also rolls slowly with the pack, keeping that lane blocked.", "hazard_reasoning": "There is a white hatchback slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and avoid a collision due to the reduced speed of the vehicle ahead."}
{"id": "train_08788", "split": "train", "clip_key": "titan_clip_67_000312_movie", "source": {"subset": "titan", "scenario": "clip_67", "frame": "000312"}, "frames": ["titan_clip_67_000312_movie_t-3.jpg", "titan_clip_67_000312_movie_t-2.jpg", "titan_clip_67_000312_movie_t-1.jpg", "titan_clip_67_000312_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban street with no centerline runs between close buildings on smooth asphalt, and traffic is light with no vehicles ahead or oncoming. On the right mid-distance, a pedestrian wearing a green blouse stands at the curb beside a bicycle, watching the roadway and potentially stepping into the ego vehicle's path. Near the left building's garage entrance close to the camera, two pedestrians wait by the doorway, one edging toward the road and possibly entering the lane. Farther ahead on the left, a person pushes a handcart along the curb in the same direction, which could constrain the car's approach. No signals are visible, and planters and parked bicycles tighten the right margin.", "hazard_reasoning": "There is a pedestrian wearing a green blouse and standing on the right side of the road. This pedestrian is close to the roadway edge and may move unpredictably into the lane, so the driver should manoeuvre carefully."}
{"id": "train_08789", "split": "train", "clip_key": "2020-0220-151845_060566_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "060566"}, "frames": ["2020-0220-151845_060566_movie_t-3.jpg", "2020-0220-151845_060566_movie_t-2.jpg", "2020-0220-151845_060566_movie_t-1.jpg", "2020-0220-151845_060566_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban covered expressway or tunnel carries same-direction traffic on two lanes with solid walls on both sides; the pavement looks smooth and overall flow is heavy and slow with a jam visible ahead, especially in the right lane. A flatbed truck with a tarped load is directly ahead in the ego lane and slows toward the queue, constraining the ego car's pace. To the right, a long line of cars crawls forward with brake lights illuminated, indicating congestion that may continue ahead. Alongside on the front-right, a silver hatchback proceeds slowly in its lane without drifting toward the ego path. Overhead structures and side barriers limit lateral space but no hazards appear.", "hazard_reasoning": "There is a red truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. You should slow down to match the traffic flow and avoid a collision with the slowing vehicle."}
{"id": "train_08790", "split": "train", "clip_key": "2020-0228-102841_011472_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "011472"}, "frames": ["2020-0228-102841_011472_movie_t-3.jpg", "2020-0228-102841_011472_movie_t-2.jpg", "2020-0228-102841_011472_movie_t-1.jpg", "2020-0228-102841_011472_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision with the stopped vehicle", "environment_perception": "An urban commercial street with two same-direction lanes, no median, and dry pavement shows heavy stop-and-go flow. A black sedan directly ahead in the ego lane remains stopped because of congestion up the road, blocking the path. In the left curb lane, a large delivery truck stands with its rear open and stacks of blue crates visible, occupying that lane and narrowing space beside the ego vehicle. Farther ahead in the same lane, a white van waits in the queue and constrains the pace. Bicycles and parking signs line the right sidewalk, and no traffic signals are prominent.", "hazard_reasoning": "There is a black sedan stopped in the ego lane because of traffic congestion up ahead. The driver should stop to avoid collision with the halted vehicle due to the congestion ahead."}
{"id": "train_08791", "split": "train", "clip_key": "titan_clip_1387_000498_movie", "source": {"subset": "titan", "scenario": "clip_1387", "frame": "000498"}, "frames": ["titan_clip_1387_000498_movie_t-3.jpg", "titan_clip_1387_000498_movie_t-2.jpg", "titan_clip_1387_000498_movie_t-1.jpg", "titan_clip_1387_000498_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban side street without a median runs between buildings, the pavement patchy and slightly wet, and traffic is light with no moving vehicles. On the right edge ahead, a man in a green shirt and gray pants carries shopping bags and walks toward the ego car along the roadway, encroaching on the ego lane and potentially entering its path. Farther ahead by the curb, a pedestrian lingers near the fencing but stays clear of the lane. Red cones and barricades line a roadside work area on the right, narrowing the usable roadway.", "hazard_reasoning": "There is a man wearing a green shirt and a gray pant, carrying shopping bags, and walking on the right side of the road, toward the ego car. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_08792", "split": "train", "clip_key": "2020-0210-155354_022921_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "022921"}, "frames": ["2020-0210-155354_022921_movie_t-3.jpg", "2020-0210-155354_022921_movie_t-2.jpg", "2020-0210-155354_022921_movie_t-1.jpg", "2020-0210-155354_022921_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two same-direction lanes and smooth pavement runs between a stone wall and a fence, and traffic is moderate to heavy, forming a slow queue. A black hatchback directly ahead in the ego lane slows because of congestion ahead and dictates the ego car's pace. In the adjacent right lane, a silver station wagon slightly ahead creeps forward alongside, limiting any chance to change lanes. Farther ahead in the right lane, a large dump truck inches along with other vans, keeping the flow slow. An overhead blue direction sign spans the roadway.", "hazard_reasoning": "There is a black hatchback slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to avoid a collision due to the reduced speed of the vehicle ahead in congested traffic."}
{"id": "train_08793", "split": "train", "clip_key": "titan_clip_678_000462_movie", "source": {"subset": "titan", "scenario": "clip_678", "frame": "000462"}, "frames": ["titan_clip_678_000462_movie_t-3.jpg", "titan_clip_678_000462_movie_t-2.jpg", "titan_clip_678_000462_movie_t-1.jpg", "titan_clip_678_000462_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the cyclist", "environment_perception": "An urban arterial with two lanes each way and no physical median appears; the ego travels in the leftmost same-direction lane with a red-tinted bus or bike marking, the pavement dry and traffic moderate, while oncoming flow stays on the right. A cyclist rides ahead in the ego lane, moving away at low speed and temporarily setting the ego car's pace. Farther ahead along the left curb, another cyclist wearing a red T-shirt and a backpack travels away from the ego car near the edge of the lane and could drift into the path. Cars in the adjacent right same-direction lane continue straight and gradually overtake, limiting easy lane changes. No-parking signs line the left sidewalk.", "hazard_reasoning": "There is a cyclist wearing a red t-shirt, carrying a backpack, and cycling, on the left side of the road, away from the ego car. Because the cyclist is close to the driving path and may drift into the lane, the driver should manoeuvre around the cyclist to maintain a safe distance."}
{"id": "train_08794", "split": "train", "clip_key": "titan_clip_236_000168_movie", "source": {"subset": "titan", "scenario": "clip_236", "frame": "000168"}, "frames": ["titan_clip_236_000168_movie_t-3.jpg", "titan_clip_236_000168_movie_t-2.jpg", "titan_clip_236_000168_movie_t-1.jpg", "titan_clip_236_000168_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street runs between tall buildings, forming a single unmarked two-way lane with smooth pavement and light traffic. Parked vehicles, cones, and a bicycle line the curbs, especially on the right, slightly narrowing the passage. Ahead on the right curb, a silver minivan stands partially in the roadway, reducing available space for the ego vehicle. From the right side near this van, a pedestrian wearing blue pants and a cap walks toward the middle of the road and may enter the ego lane. On the left sidewalk slightly ahead, another pedestrian holding an umbrella walks along the curb without stepping into the lane. No signals or speed limit signs are clearly visible, and no oncoming traffic appears.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a cap, walking toward the middle of the road from the right side. The pedestrian is stepping into the roadway unexpectedly, so the driver should slow down to maintain a safe distance and prevent a collision."}
{"id": "train_08795", "split": "train", "clip_key": "titan_clip_574_000354_movie", "source": {"subset": "titan", "scenario": "clip_574", "frame": "000354"}, "frames": ["titan_clip_574_000354_movie_t-3.jpg", "titan_clip_574_000354_movie_t-2.jpg", "titan_clip_574_000354_movie_t-1.jpg", "titan_clip_574_000354_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban two-way street climbs gently with one narrow lane per direction, no median, and mostly smooth pavement; traffic is light. Ahead in the ego lane near the left curb a white box truck is stopped for loading, partially blocking the lane and setting the pace. Beside its rear, a pedestrian wearing a cap and brown overalls stands in the middle of the road while attending the parked vehicle on the left, occupying the ego path. In the opposing lane a white car approaches downhill, limiting room to pass. A red painted shoulder and guardrail run along the right.", "hazard_reasoning": "There is a pedestrian wearing a cap and brown overalls, standing in the middle of the road, because they are attending a parked vehicle on the left. The driver must carefully manoeuvre around the pedestrian to avoid a potential collision."}
{"id": "train_08796", "split": "train", "clip_key": "2020-0203-154554_039730_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "039730"}, "frames": ["2020-0203-154554_039730_movie_t-3.jpg", "2020-0203-154554_039730_movie_t-2.jpg", "2020-0203-154554_039730_movie_t-1.jpg", "2020-0203-154554_039730_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane road runs under an elevated expressway with a right-side guardrail and smooth pavement; traffic is moderate and slows slightly near the underpass. A white box truck directly ahead in the ego lane slows due to congestion ahead and sets the pace for the ego vehicle. A small pickup in the right lane draws level and continues steadily beside the truck, reducing lateral clearance for a lane change. Several cars in the left lane proceed past the slowing vehicles and merge into a developing queue farther ahead. Temporary barriers line the left sidewalk but stay off the roadway.", "hazard_reasoning": "There is a truck that is slowing down in the ego lane due to traffic congestion ahead. Therefore, the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_08797", "split": "train", "clip_key": "titan_clip_989_000402_movie", "source": {"subset": "titan", "scenario": "clip_989", "frame": "000402"}, "frames": ["titan_clip_989_000402_movie_t-3.jpg", "titan_clip_989_000402_movie_t-2.jpg", "titan_clip_989_000402_movie_t-1.jpg", "titan_clip_989_000402_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with single lanes and no median runs between small shops; the pavement looks good and traffic appears light to moderate. Ahead in the ego lane, a cyclist moves away near the left edge at low speed, potentially constraining the ego vehicle's pace. In the opposing lane, an oncoming scooter and a small van approach steadily but remain in their lane. On the left margin, there is a pedestrian wearing black pants and a white shirt, carrying a white parcel, who walks away from the ego car along the roadway because there is no sidewalk.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, carrying a white parcel, who is walking on the left side of the road, away from the ego car, because there is no sidewalk. You should carefully manoeuvre around this pedestrian because they are walking on the roadway without a sidewalk."}
{"id": "train_08798", "split": "train", "clip_key": "titan_clip_96_000576_movie", "source": {"subset": "titan", "scenario": "clip_96", "frame": "000576"}, "frames": ["titan_clip_96_000576_movie_t-3.jpg", "titan_clip_96_000576_movie_t-2.jpg", "titan_clip_96_000576_movie_t-1.jpg", "titan_clip_96_000576_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of crossing pedestrians", "environment_perception": "An urban two-way street with one narrow lane each direction has smooth pavement and no median; traffic is light to moderate and slows at a zebra crossing between tall buildings. A small white van ahead in the ego lane moves slowly toward the next block, constraining the pace. From the opposing lane at the right edge, an oncoming white van creeps past the crosswalk, reducing clearance as it approaches. On the right side of the road, a man wearing a black shirt and gray pants with a backpack walks away from the ego car along the crosswalk area near the curb, remaining close to the roadway. Parked vehicles line both curbs and tighten the usable width.", "hazard_reasoning": "A man wearing a black shirt and gray pants, carrying a backpack, and walking on the right side of the road, away from the ego car. The pedestrian could step into the ego-vehicle's path as it nears the intersection, so the driver should remain alert to their movement aligned with the warning content."}
{"id": "train_08799", "split": "train", "clip_key": "titan_clip_416_000282_movie", "source": {"subset": "titan", "scenario": "clip_416", "frame": "000282"}, "frames": ["titan_clip_416_000282_movie_t-3.jpg", "titan_clip_416_000282_movie_t-2.jpg", "titan_clip_416_000282_movie_t-1.jpg", "titan_clip_416_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrians", "environment_perception": "A quiet urban side street with stone paving and no marked lanes runs between shops on the left and a tree-lined walkway with bollards on the right; the ego vehicle proceeds along the left side and overall traffic is light. On the left near the curb, two women carrying an umbrella walk together toward the ego car, close to the travel path and potentially edging into it. Slightly ahead at center-left, another pedestrian walks away along the storefronts and remains near the edge. Farther ahead near the middle of the street, a small dark car sits in the distance without affecting the ego vehicle's pace.", "hazard_reasoning": "There are two women carrying an umbrella, wearing pants, and walking together on the left side of the road, toward the ego car. The driver should carefully manoeuvre around them to maintain a safe distance and prevent a potential collision."}
{"id": "train_08800", "split": "train", "clip_key": "2020-0129-105040_046946_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "046946"}, "frames": ["2020-0129-105040_046946_movie_t-3.jpg", "2020-0129-105040_046946_movie_t-2.jpg", "2020-0129-105040_046946_movie_t-1.jpg", "2020-0129-105040_046946_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the sedan beside you", "environment_perception": "An urban two-lane road runs under an elevated expressway with a right-side guardrail and smooth pavement; traffic is light to moderate as the roadway curves gently right. To the left of the ego car, a white sedan drives alongside in the left lane, keeping pace and occupying the adjacent space. Ahead in the left lane, a silver kei van proceeds steadily through the curve, constraining the following distance. Farther ahead in both lanes, several small vans and cars move straight under the overpass with stable gaps and do not impede the ego lane. A pedestrian footbridge spans the road, and traffic remains steady around the ego vehicle.", "hazard_reasoning": "There is a white sedan driving beside the ego-car, in the left lane. The sedan's close position could lead to an unexpected lane change or obstruct the ego-vehicle's maneuvering space, so the driver should remain alert."}
{"id": "train_08801", "split": "train", "clip_key": "2020-0225-102455_002616_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "002616"}, "frames": ["2020-0225-102455_002616_movie_t-3.jpg", "2020-0225-102455_002616_movie_t-2.jpg", "2020-0225-102455_002616_movie_t-1.jpg", "2020-0225-102455_002616_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Stop and wait behind the cyclist.", "environment_perception": "An urban three-lane arterial with smooth pavement and a central divider carries slow, congested same-direction traffic past mid-rise buildings. A large box truck directly ahead in the ego lane creeps and pauses, controlling the ego vehicle's pace. To the far left edge in front of the ego car, a cyclist is stopped against the curb amid the queue and could reenter the lane as traffic moves. In the adjacent right lane a white van advances past the ego vehicle, overtaking the slower line. Overhead directional signs indicate an upcoming split in lanes.", "hazard_reasoning": "There is a cyclist wearing a brown jacket and riding a red bicycle, stopped in front of the ego car but to the far left of the lane, because of traffic congestion. The driver should stop to avoid colliding with the stationary cyclist."}
{"id": "train_08802", "split": "train", "clip_key": "2020-0127-132751_039433_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "039433"}, "frames": ["2020-0127-132751_039433_movie_t-3.jpg", "2020-0127-132751_039433_movie_t-2.jpg", "2020-0127-132751_039433_movie_t-1.jpg", "2020-0127-132751_039433_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane arterial carries traffic on dry, slightly worn pavement; three same-direction lanes run on the left, separated from opposing lanes on the right by a narrow median with orange posts, and overall flow is moderate. A small white box truck ahead in the center lane cruises steadily and sets the ego vehicle's pace. A white sedan in the right lane near the median advances past and continues ahead. Oncoming cars move in the lanes to the right beyond the posts with light flow and no interaction. Overhead direction signs and a pedestrian footbridge span the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08803", "split": "train", "clip_key": "2020-0226-140503_088458_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "088458"}, "frames": ["2020-0226-140503_088458_movie_t-3.jpg", "2020-0226-140503_088458_movie_t-2.jpg", "2020-0226-140503_088458_movie_t-1.jpg", "2020-0226-140503_088458_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with one lane each direction and a solid yellow centerline runs between mid-rise buildings; the pavement is dry and traffic is heavy, especially opposite the ego vehicle. Ahead in the ego lane, a white sedan slows to a crawl because of congestion further up, so it governs the ego car's pace. To the right, a queue of oncoming vehicles, including a large white box truck and a van, remains nearly stopped near the centerline, reducing lateral clearance. A silver van stays by the left curb near the camera without entering the lane.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe distance and be prepared for further reduced speeds."}
{"id": "train_08804", "split": "train", "clip_key": "2020-0228-102841_097245_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "097245"}, "frames": ["2020-0228-102841_097245_movie_t-3.jpg", "2020-0228-102841_097245_movie_t-2.jpg", "2020-0228-102841_097245_movie_t-1.jpg", "2020-0228-102841_097245_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrian at crosswalk", "environment_perception": "An urban signalized multi-lane intersection with smooth pavement lies ahead, with no median and moderate cross traffic. The camera is at the stop line on the near side. A small white box truck passes across the intersection in front from left to right, occupying the path ahead. A silver car also proceeds across in front within the same cross stream, keeping the junction active. On the left-side crosswalk, several pedestrians are walking across toward the far side; among them, a pedestrian wearing all beige and a face mask is crossing at the crosswalk to the left side of the road, so the crosswalk remains occupied near the ego approach. A pedestrian overpass and roadside buildings frame the scene.", "hazard_reasoning": "There is a pedestrian wearing all beige and a face mask, crossing at the pedestrian crosswalk to the left side of the road. The driver must stop because the pedestrian is already on the crosswalk and entering the vehicle's path, posing a collision risk."}
{"id": "train_08805", "split": "train", "clip_key": "2020-0131-103016_080972_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "080972"}, "frames": ["2020-0131-103016_080972_movie_t-3.jpg", "2020-0131-103016_080972_movie_t-2.jpg", "2020-0131-103016_080972_movie_t-1.jpg", "2020-0131-103016_080972_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three same-direction lanes is divided from oncoming traffic by a planted median; the pavement is dry and smooth, and traffic moves at a steady moderate pace. A white van ahead in the ego lane proceeds straight through a green signal and sets the ego vehicle's pace. A large box truck in the right-adjacent lane travels alongside slightly ahead, limiting room to move right. Farther ahead, a dark car in the left lane continues straight within its lane. The signalized intersection ahead shows green, and no obstacles or work zones are visible.", "hazard_reasoning": "A white van is driving in front of the ego car in the ego lane, because of the green traffic light. The driver should follow the vehicle ahead to maintain a safe distance and ensure smooth passage through the intersection under the signal."}
{"id": "train_08806", "split": "train", "clip_key": "titan_clip_486_000564_movie", "source": {"subset": "titan", "scenario": "clip_486", "frame": "000564"}, "frames": ["titan_clip_486_000564_movie_t-3.jpg", "titan_clip_486_000564_movie_t-2.jpg", "titan_clip_486_000564_movie_t-1.jpg", "titan_clip_486_000564_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban backstreet with a single narrow two-way lane and no median runs between buildings and a parking lot; the pavement is smooth and traffic is light with no moving vehicles. Far ahead along the left edge, a small group of pedestrians walks away from the ego vehicle, keeping to the side and slightly constraining speed through the narrow section. On the right edge near the parking lot entrance, a pedestrian in a white shirt walks toward the ego vehicle because there is no sidewalk and could drift into the travel line. At the right curb by a utility pole, another person stands facing the lane near a white van in the lot, potentially stepping out as the car approaches.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, walking on the right side of the road, towards the ego car, because there is no sidewalk. The pedestrian's presence in the travel lane poses a collision risk, so the driver should maneuver around them."}
{"id": "train_08807", "split": "train", "clip_key": "titan_clip_446_000108_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_446_000108_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_446_000108_movie_t-3_augB1.jpg", "titan_clip_446_000108_movie_t-2_augB1.jpg", "titan_clip_446_000108_movie_t-1_augB1.jpg", "titan_clip_446_000108_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for crossing pedestrian", "environment_perception": "An urban commercial street with a single narrow lane runs between shops and a planted median; the surface is worn but dry, and traffic is light. Ahead, a man wearing a white shirt and black pants with a shoulder bag crosses from the left side to the right, moving through the ego vehicle's lane and prompting a brief slowdown. Far ahead in the same direction, a small white van continues toward an archway at a modest speed. On the right sidewalk, several pedestrians walk along while one lingers near the curb close to the lane edge. Bollards and planters lining both sides create a tight corridor.", "hazard_reasoning": "There is a man wearing a white shirt and black pants, carrying a shoulder bag, and crossing the street, from the left side of the road, to the right side. The driver should slow down because the pedestrian is crossing the road and may enter the vehicle's path unexpectedly."}
{"id": "train_08808", "split": "train", "clip_key": "2020-0212-102546_024933_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "024933"}, "frames": ["2020-0212-102546_024933_movie_t-3.jpg", "2020-0212-102546_024933_movie_t-2.jpg", "2020-0212-102546_024933_movie_t-1.jpg", "2020-0212-102546_024933_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban signalized intersection appears on a two-lane approach with a low hedge median on the right and dry pavement, and traffic is moderate to heavy near the junction. A red minivan directly ahead in the ego lane slows and then waits near the stop line because congestion builds ahead. Beyond it, a white box truck in the same direction is already stopped at the intersection, further holding the queue and constraining the ego vehicle's pace. Crossing traffic, including a yellow service vehicle and several cars, moves left to right through the junction, occupying the intersection while the approach remains queued. Overhead traffic lights are visible above the lane.", "hazard_reasoning": "There is a red minivan, slowing, in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced traffic speed."}
{"id": "train_08809", "split": "train", "clip_key": "2020-0203-114632_018507_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "018507"}, "frames": ["2020-0203-114632_018507_movie_t-3.jpg", "2020-0203-114632_018507_movie_t-2.jpg", "2020-0203-114632_018507_movie_t-1.jpg", "2020-0203-114632_018507_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way arterial with two lanes in each direction and a painted median appears, the ego vehicle traveling in the left lane on smooth pavement with light to moderate flow as it approaches a busy intersection. A tan taxi ahead in the ego lane slows near the crosswalk and dictates the ego vehicle's pace. A cyclist near the right curb by the intersection is stopped and waits beside the lane, posing a minor potential to merge when movement resumes. Pedestrians line both sidewalks behind railings and wait near the crossings without entering the roadway. A white van stands at the right curb just beyond the junction, reducing lateral clearance on that side.", "hazard_reasoning": "There is a cyclist carrying a backpack, stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to avoid colliding with the stationary cyclist at the traffic light."}
{"id": "train_08810", "split": "train", "clip_key": "2020-0127-132751_067649_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "067649"}, "frames": ["2020-0127-132751_067649_movie_t-3.jpg", "2020-0127-132751_067649_movie_t-2.jpg", "2020-0127-132751_067649_movie_t-1.jpg", "2020-0127-132751_067649_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with two same-direction lanes is shown, the ego vehicle in the left lane beside a central guardrail and a red bus-priority lane to the right; the pavement is dry and traffic is light. A white van directly ahead in the ego lane is stopped, constraining the ego vehicle. Farther right beyond the rail, another white van sits parked and remains clear of the travel lanes. On the left sidewalk, a couple of pedestrians stand near a side street and do not step into the road. Traffic lights span the intersection ahead.", "hazard_reasoning": "There is a white van stopped in front of the ego car, in the ego lane. The driver should stop to prevent a rear-end collision."}
{"id": "train_08811", "split": "train", "clip_key": "2020-0205-103411_055840_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "055840"}, "frames": ["2020-0205-103411_055840_movie_t-3.jpg", "2020-0205-103411_055840_movie_t-2.jpg", "2020-0205-103411_055840_movie_t-1.jpg", "2020-0205-103411_055840_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial approaches a signalized intersection, with three same-direction lanes and a guardrail on the right; the pavement is smooth and traffic is halted at the light. A black van directly ahead in the ego lane is stopped near the intersection because the overhead signal for our approach shows red, constraining the ego vehicle's pace. To the left, a dark station wagon in the adjacent lane is also waiting at the red and remains in line beside the van. Across the junction, several cars on the cross street continue through the intersection while our approach is held. A fuel station and mid-rise buildings line the roadside, and no obstacles or work zones are visible.", "hazard_reasoning": "There is a black van stopped near the intersection, in the ego lane, because of the red traffic light ahead. Driver must stop to avoid a rear-end collision and comply with the red traffic signal."}
{"id": "train_08812", "split": "train", "clip_key": "titan_clip_816_000324_movie", "source": {"subset": "titan", "scenario": "clip_816", "frame": "000324"}, "frames": ["titan_clip_816_000324_movie_t-3.jpg", "titan_clip_816_000324_movie_t-2.jpg", "titan_clip_816_000324_movie_t-1.jpg", "titan_clip_816_000324_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian beside parked truck", "environment_perception": "A narrow urban two-way street with single lanes, no median, smooth pavement, and light traffic is shown as the ego vehicle proceeds in the left lane between close buildings. A delivery truck is stopped ahead along the right curb, protruding into the roadway and narrowing the passage. A pedestrian in a blue shirt walks in the roadway on the right side toward the ego car to get around the parked vehicle, edging toward the ego lane. Another pedestrian stands at the left curb by a shop close to the travel lane. A third pedestrian farther ahead continues along the left sidewalk away from the camera. No signals or moving vehicles are visible, and the parked truck forms the main obstruction.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and walking on the right side of the road, towards the ego car, because of the parked vehicle. The pedestrian might suddenly enter the lane to pass the obstruction, so the driver should stay alert to avoid collision."}
{"id": "train_08813", "split": "train", "clip_key": "titan_clip_1376_000150_movie", "source": {"subset": "titan", "scenario": "clip_1376", "frame": "000150"}, "frames": ["titan_clip_1376_000150_movie_t-3.jpg", "titan_clip_1376_000150_movie_t-2.jpg", "titan_clip_1376_000150_movie_t-1.jpg", "titan_clip_1376_000150_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one narrow lane per direction and no median approaches a small intersection with a zebra crossing; pavement is smooth and traffic is very light. Two pedestrians ahead are in the middle of the crosswalk moving from right to left across the ego lane, occupying the vehicle's path and dictating a brief pause. Another man at the right curb steps onto the crosswalk toward the left, following them and further blocking the lane. A pedestrian farther ahead beyond the junction walks away along the right side of the street and does not interact. Shopfront scaffolding on the left corner and a line of cones along the right sidewalk remain outside the roadway.", "hazard_reasoning": "No caption available. There are no immediate hazards detected, but the presence of pedestrians at the crossings requires continued vigilance."}
{"id": "train_08814", "split": "train", "clip_key": "2020-0220-102630_085827_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "085827"}, "frames": ["2020-0220-102630_085827_movie_t-3.jpg", "2020-0220-102630_085827_movie_t-2.jpg", "2020-0220-102630_085827_movie_t-1.jpg", "2020-0220-102630_085827_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs on smooth asphalt beside a metal median, and traffic moves slowly in moderate congestion while oncoming vehicles pass beyond the barrier. A white van directly ahead in the ego lane accelerates toward a short gap and then matches the queue, effectively setting the ego car's pace because of traffic congestion ahead. To the left, a black hatchback travels alongside and edges slightly ahead in the adjacent lane, reducing space for a left merge. Farther ahead in that left lane, a box truck slows in line and contributes to the bottleneck.", "hazard_reasoning": "There is a white van speeding up in the ego lane, because of traffic congestion ahead. The van may accelerate unexpectedly as the congestion clears, so the driver should start moving promptly to maintain safe distance and flow."}
{"id": "train_08815", "split": "train", "clip_key": "2020-0131-135401_007990_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "007990"}, "frames": ["2020-0131-135401_007990_movie_t-3.jpg", "2020-0131-135401_007990_movie_t-2.jpg", "2020-0131-135401_007990_movie_t-1.jpg", "2020-0131-135401_007990_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban two-way street with one narrow lane each direction and no median appears well paved; traffic is light and the ego vehicle is paused. A white box truck directly ahead in the ego lane is stopped, blocking the path and constraining progress. Several small vans are parked along the left curb beside and slightly ahead of the ego vehicle, narrowing the usable lane. A dark SUV stands at the right curb in the oncoming side near a fence, remaining stationary and not encroaching into the ego lane. Strong sun glare from the upper right reduces visibility but no signals or signs are salient.", "hazard_reasoning": "There is a white truck stopped in the ego lane. You must stop to avoid a rear-end collision with the halted vehicle."}
{"id": "train_08816", "split": "train", "clip_key": "titan_clip_161_000408_movie", "source": {"subset": "titan", "scenario": "clip_161", "frame": "000408"}, "frames": ["titan_clip_161_000408_movie_t-3.jpg", "titan_clip_161_000408_movie_t-2.jpg", "titan_clip_161_000408_movie_t-1.jpg", "titan_clip_161_000408_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a single narrow two-way carriageway, no median, and smooth pavement; traffic is light but the lane is constricted by vehicles stopped along both curbs. Ahead in the middle of the ego lane, a pedestrian in a white shirt and black pants walks away from the ego vehicle, taking the center of the road because a parked truck occupies the left side of the lane. Along the left curb, a large box truck beside the ego car and another truck farther ahead remain stationary, narrowing the usable lane and constraining the ego vehicle's path. On the right shoulder ahead, a small white van is stopped near the sidewalk, further tightening the passage. No signals or speed signs are clearly visible.", "hazard_reasoning": "There is a pedestrian wearing black pants and a white shirt, and walking in the middle of the road, away from the ego car, because of the parked vehicle on the left side. The driver should slow down to avoid a potential collision as the pedestrian may step into the vehicle's path unexpectedly."}
{"id": "train_08817", "split": "train", "clip_key": "titan_clip_1095_000486_movie", "source": {"subset": "titan", "scenario": "clip_1095", "frame": "000486"}, "frames": ["titan_clip_1095_000486_movie_t-3.jpg", "titan_clip_1095_000486_movie_t-2.jpg", "titan_clip_1095_000486_movie_t-1.jpg", "titan_clip_1095_000486_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban back street with closely spaced buildings, a narrow two-way road with intact pavement and light traffic; the ego vehicle proceeds in the left lane. On the right curb ahead, a gray truck is parked with its rear doors open while a worker unloads, narrowing the roadway beside it. The worker stands at the rear on the asphalt near the ego path. No moving vehicles appear immediately ahead or oncoming. Bicycles and shop items line the right sidewalk near the truck but remain stationary.", "hazard_reasoning": "There is a gray truck parked on the right side of the road because it is being unloaded. It partially obscures the sidewalk and may hide pedestrians, so the driver should carefully manoeuvre around it."}
{"id": "train_08818", "split": "train", "clip_key": "titan_clip_108_000384_movie", "source": {"subset": "titan", "scenario": "clip_108", "frame": "000384"}, "frames": ["titan_clip_108_000384_movie_t-3.jpg", "titan_clip_108_000384_movie_t-2.jpg", "titan_clip_108_000384_movie_t-1.jpg", "titan_clip_108_000384_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian in crosswalk", "environment_perception": "An urban downtown scene shows the ego vehicle approaching a zebra crosswalk at a small intersection on a narrow one-lane road with no median; the pavement is clean and there are no moving vehicles, so traffic is light. A man wearing a dark-blue shirt and gray shorts walks across the crosswalk from right to left directly ahead, occupying the ego lane and determining the pace. On the right curb ahead, a group of office workers stands and begins edging toward the crosswalk, potentially entering after him. Near the left curb, another pedestrian waits facing the road but does not step out. Orange cones with a taped line span part of the lane before the crosswalk, and several bicycles are parked on the left sidewalk.", "hazard_reasoning": "There is a man wearing a dark-blue shirt and gray shorts, and walking across a crosswalk from right to left. The driver should yield to the pedestrian as he crosses the road at the marked crosswalk to prevent a collision."}
{"id": "train_08819", "split": "train", "clip_key": "2020-0205-152530_052413_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "052413"}, "frames": ["2020-0205-152530_052413_movie_t-3.jpg", "2020-0205-152530_052413_movie_t-2.jpg", "2020-0205-152530_052413_movie_t-1.jpg", "2020-0205-152530_052413_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban divided road with two lanes in the ego direction runs over smooth, dry asphalt, separated from opposing traffic by a grassy median and fence, and traffic flows lightly to moderately. A gray van ahead in the ego lane pulls away as traffic ahead is moving, increasing the gap to the camera car. A flatbed truck slightly ahead in the adjacent right lane proceeds straight at a similar pace without affecting the ego lane. Farther ahead in the same lane, a white car maintains its distance in the moving queue. An overhead blue guide sign for Ariake Route 357 gives directions to Kiba left and Daiba right in 700 m, and guardrails line the right edge.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08820", "split": "train", "clip_key": "2020-0212-150403_018758_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "018758"}, "frames": ["2020-0212-150403_018758_movie_t-3.jpg", "2020-0212-150403_018758_movie_t-2.jpg", "2020-0212-150403_018758_movie_t-1.jpg", "2020-0212-150403_018758_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban arterial with at least two lanes in the ego direction has smooth pavement and no median, and traffic is heavy and queued. A black SUV directly ahead in the ego lane is stopped because congestion extends further up the road, holding the ego vehicle. In the adjacent right lane, a dark car slightly ahead is also stopped with brake lights on, limiting any chance to pass. At the left curb near the ego car, a person stands beside a parked van with its door open, close to the travel lane but stationary. Overhead direction signs appear in the distance.", "hazard_reasoning": "There is a black SUV stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision with the halted vehicle."}
{"id": "train_08821", "split": "train", "clip_key": "titan_clip_1145_000588_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1145_000588_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1145_000588_movie_t-3_augB1.jpg", "titan_clip_1145_000588_movie_t-2_augB1.jpg", "titan_clip_1145_000588_movie_t-1_augB1.jpg", "titan_clip_1145_000588_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian on roadway", "environment_perception": "An urban narrow two-way street with one lane each direction and no median is shown, the asphalt slightly worn and vehicle traffic light with no moving cars ahead as the ego-vehicle proceeds in the left lane. Ahead along the left edge, a pedestrian in a white T-shirt, black pants, and a backpack walks away from the car within the roadway where there is no sidewalk, constraining pace. On the left by a convenience-store frontage, another pedestrian walks near the curb toward the ego but keeps to the side. On the near right, a pedestrian at the curb stands just off the lane and does not enter. A parked bicycle and stacked goods at the storefront protrude slightly into the left margin and narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, black pants, and carrying a backpack, walking on the left side of the road, away from the ego car, because there is no sidewalk. The pedestrian's proximity to the travel lane means they could step into the vehicle's path unexpectedly, so the driver should be aware in case it might affect future maneuvers."}
{"id": "train_08822", "split": "train", "clip_key": "2020-0213-143552_028720_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "028720"}, "frames": ["2020-0213-143552_028720_movie_t-3.jpg", "2020-0213-143552_028720_movie_t-2.jpg", "2020-0213-143552_028720_movie_t-1.jpg", "2020-0213-143552_028720_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the white van.", "environment_perception": "An urban two-way shopping street has one narrow lane in each direction, no median, smooth pavement, and light traffic. The ego vehicle approaches a small intersection with a zebra crosswalk. Ahead on the left, a white van is parked at the curb close to the travel lane. On the right sidewalk by the shopfronts, two pedestrians walk along, and another person stands near the crosswalk. Overhead signal heads hang above the intersection, but their aspects are not visible.", "hazard_reasoning": "There is a white van parked on the left side of the road. The parked van reduces available road width on the left, requiring careful avoidance to maintain a safe path aligned with the recommended manoeuvre."}
{"id": "train_08823", "split": "train", "clip_key": "2020-0213-143552_020536_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "020536"}, "frames": ["2020-0213-143552_020536_movie_t-3.jpg", "2020-0213-143552_020536_movie_t-2.jpg", "2020-0213-143552_020536_movie_t-1.jpg", "2020-0213-143552_020536_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement runs between mid-rise buildings, with same-direction through lanes on the right separated by bollards; traffic is moderate and slows near an intersection. A black truck directly ahead in the ego lane slows and queues for a red signal, setting the ego car's pace. A small light-colored hatchback slightly ahead to the left continues straight in its lane at similar speed without merging. A large white SUV on the far left lane advances past the ego vehicle while remaining in its lane. Overhead traffic lights ahead show red, and blue direction boards hang above the roadway.", "hazard_reasoning": "There is a black truck slowing in the ego lane, in front of the ego car, because of the red traffic lights. The driver should slow down to avoid a potential rear-end collision as the truck's deceleration indicates sudden braking ahead."}
{"id": "train_08824", "split": "train", "clip_key": "2020-0227-104226_025603_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "025603"}, "frames": ["2020-0227-104226_025603_movie_t-3.jpg", "2020-0227-104226_025603_movie_t-2.jpg", "2020-0227-104226_025603_movie_t-1.jpg", "2020-0227-104226_025603_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban scene unfolds on a divided uphill ramp beneath an elevated structure, with a single ego lane bounded by guardrails; the asphalt is dry and traffic is light. Ahead in the ego lane, a blue truck slows slightly while climbing, reducing the gap and constraining the ego car's pace. On the separated roadway to the right, a passenger car travels in the same direction and continues without interaction due to the barrier. Buildings and overhead ramps frame the view, and no pedestrians, cyclists, or other hazards are visible.", "hazard_reasoning": "There's a blue truck slowing in the ego-lane, ahead of the ego-car. You should follow the vehicle ahead to maintain a safe distance and adapt to its reduced speed."}
{"id": "train_08825", "split": "train", "clip_key": "titan_clip_65_000030_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_65_000030_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_65_000030_movie_t-3_augB1.jpg", "titan_clip_65_000030_movie_t-2_augB1.jpg", "titan_clip_65_000030_movie_t-1_augB1.jpg", "titan_clip_65_000030_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the pedestrian", "environment_perception": "A narrow urban two-way street without a median runs between close buildings, the pavement is smooth and traffic is light. A pedestrian in a white shirt and white pants walks away from the ego vehicle in the middle of the roadway ahead because there is no sidewalk, occupying the ego path and controlling the pace. Farther ahead, a small white truck is visible near the end of the block. A white car is parked along the right edge, narrowing the available lane beside the ego path. Potted plants and storefront items line the right curb, further reducing usable width.", "hazard_reasoning": "There is a pedestrian wearing white pants and a white shirt, and walking away from the ego car, in the middle of the road, because there is no sidewalk. The pedestrian may continue walking into the lane, so the driver should yield to avoid a collision."}
{"id": "train_08826", "split": "train", "clip_key": "2020-0205-103411_053414_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "053414"}, "frames": ["2020-0205-103411_053414_movie_t-3.jpg", "2020-0205-103411_053414_movie_t-2.jpg", "2020-0205-103411_053414_movie_t-1.jpg", "2020-0205-103411_053414_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three lanes in the ego direction runs straight under a pedestrian overpass; the pavement is dry and smooth, and traffic moves at a moderate, steady pace with oncoming cars separated to the right by a fenced median. A black van ahead in the ego lane drives away from the ego car, maintaining speed and setting the headway. To the left ahead, a black sedan keeps its lane at a similar pace, running roughly parallel to the ego vehicle and limiting room to merge left. Farther ahead in the left lane, a light truck proceeds steadily and governs the flow there. An overhead blue sign shows Yokohama 27 km and Gotanda 2 km.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08827", "split": "train", "clip_key": "titan_clip_197_000294_movie", "source": {"subset": "titan", "scenario": "clip_197", "frame": "000294"}, "frames": ["titan_clip_197_000294_movie_t-3.jpg", "titan_clip_197_000294_movie_t-2.jpg", "titan_clip_197_000294_movie_t-1.jpg", "titan_clip_197_000294_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for the crossing pedestrian", "environment_perception": "An urban street with tall buildings forms a narrow two-way road with no median and smooth pavement, and traffic is light as the ego vehicle approaches a pedestrian crossing. A white kei car ahead in the ego lane proceeds straight at low speed over the crossing, setting the pace. On the right sidewalk by the near side of the crossing, a pedestrian wearing a black blouse and carrying a handbag walks toward the crossing and may step into the ego lane. Beside her, another pedestrian holding a parasol waits at the curb near the crossing and could enter after the first. No oncoming vehicles are visible.", "hazard_reasoning": "There is a pedestrian wearing a black blouse, carrying a handbag, and walking toward a pedestrian crossing. The driver should stop because the pedestrian may step onto the road at the marked crossing."}
{"id": "train_08828", "split": "train", "clip_key": "titan_clip_953_000534_movie", "source": {"subset": "titan", "scenario": "clip_953", "frame": "000534"}, "frames": ["titan_clip_953_000534_movie_t-3.jpg", "titan_clip_953_000534_movie_t-2.jpg", "titan_clip_953_000534_movie_t-1.jpg", "titan_clip_953_000534_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban two-way street with no median and patched pavement runs between buildings, with a work zone and cones along the left shoulder; traffic is light and steady. On the right, an oncoming green truck passes close to the ego vehicle as it travels by in the opposite lane. Ahead on the left, there is a black van parked at the curb, narrowing the usable lane near the construction area. Slightly ahead near the right edge, a cyclist rides in the same direction close to the curb and could edge toward the ego lane. Two pedestrians walk along the right sidewalk past storefronts without entering the roadway.", "hazard_reasoning": "There is a black van parked on the left side of the road. The parked van reduces available lane width and may obstruct the ego-vehicle's path, so the driver should carefully manoeuvre around it."}
{"id": "train_08829", "split": "train", "clip_key": "titan_clip_346_000468_movie", "source": {"subset": "titan", "scenario": "clip_346", "frame": "000468"}, "frames": ["titan_clip_346_000468_movie_t-3.jpg", "titan_clip_346_000468_movie_t-2.jpg", "titan_clip_346_000468_movie_t-1.jpg", "titan_clip_346_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian ahead", "environment_perception": "An urban commercial street with a narrow single-lane shared surface of interlocking bricks has no center divider; vehicle traffic is light while pedestrian activity is heavy. On the right side, a pedestrian wearing a white shirt and black pants walks toward the ego vehicle along the edge and may enter the travel path. Ahead in the center, two pedestrians proceed away along the lane, occupying the path and constraining the ego vehicle's pace. At the left curb near a shop entrance, another person stands close to the roadway, positioned to step out. A blue straight-ahead mandatory sign and a red triangular stop sign are visible on the left, and no other vehicles or cyclists appear.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, walking on the right side of the road, towards the ego car. The driver should be aware because this pedestrian is moving toward the vehicle and may step into its path."}
{"id": "train_08830", "split": "train", "clip_key": "2020-0205-103411_074477_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "074477"}, "frames": ["2020-0205-103411_074477_movie_t-3.jpg", "2020-0205-103411_074477_movie_t-2.jpg", "2020-0205-103411_074477_movie_t-1.jpg", "2020-0205-103411_074477_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs between tall buildings, with a shrub median on the right and smooth pavement; traffic appears moderate. A black truck directly ahead in the ego lane slows because congestion builds further up the road, constraining the ego vehicle's pace. A red hatchback slightly ahead in the left lane continues at a steady speed, overtaking the slowing truck without impeding the ego lane. On the far side of the median to the right, oncoming vehicles including a white truck travel steadily in the opposite direction, separated by the hedge. A pedestrian footbridge spans the roadway ahead.", "hazard_reasoning": "There is a black truck slowing in the ego lane because of traffic congestion ahead on the road. The driver should slow down to maintain a safe following distance and avoid a collision with the decelerating truck."}
{"id": "train_08831", "split": "train", "clip_key": "2020-0205-152530_034350_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "034350"}, "frames": ["2020-0205-152530_034350_movie_t-3.jpg", "2020-0205-152530_034350_movie_t-2.jpg", "2020-0205-152530_034350_movie_t-1.jpg", "2020-0205-152530_034350_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs between tall office buildings, with smooth pavement and a planted median on the right separating oncoming traffic; overall flow is light to moderate. Ahead in the leftmost lane, a large box truck in the ego lane slows, constraining the ego car's pace. Slightly ahead to the right, a black hatchback in the adjacent lane continues straight at a steady speed and moves ahead of the slowing truck. Farther ahead in the center lanes, a white van and a few cars travel straight with ample gaps and no immediate interaction with the ego vehicle. Overhead blue directional signage indicates routes toward Ginza and Nihonbashi.", "hazard_reasoning": "There is a brown truck slowing in the ego lane, in front of the ego car. The truck's reduced speed ahead could lead to a collision if the driver does not slow down to maintain a safe following distance."}
{"id": "train_08832", "split": "train", "clip_key": "titan_clip_791_000180_movie", "source": {"subset": "titan", "scenario": "clip_791", "frame": "000180"}, "frames": ["titan_clip_791_000180_movie_t-3.jpg", "titan_clip_791_000180_movie_t-2.jpg", "titan_clip_791_000180_movie_t-1.jpg", "titan_clip_791_000180_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of guard rails ahead", "environment_perception": "An urban two-way street with narrow single lanes and no median runs between buildings on smooth dry asphalt, and traffic is light. Guard rails line the left side of the road, separating the walkway. A white kei truck is stopped ahead along the right curb beside orange cones at a roadside work area, narrowing the oncoming lane while remaining outside the ego lane. Another small truck is parked just beyond it on the same right shoulder, continuing the constriction for opposing traffic. A pedestrian stands on the left near the guard rails close to the curb, stationary and near the travel way where he may step toward the lane.", "hazard_reasoning": "There are guard rails set up along the left side of the road. The guard rails reduce shoulder space and may pose a collision risk if the vehicle drifts too close, so drivers should be aware of their position to avoid striking the rails."}
{"id": "train_08833", "split": "train", "clip_key": "titan_clip_905_000516_movie", "source": {"subset": "titan", "scenario": "clip_905", "frame": "000516"}, "frames": ["titan_clip_905_000516_movie_t-3.jpg", "titan_clip_905_000516_movie_t-2.jpg", "titan_clip_905_000516_movie_t-1.jpg", "titan_clip_905_000516_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential street leads toward a level railway crossing on a narrow two-way road without a median; the asphalt is dry and in good condition, and overall traffic is light. A silver van ahead in the ego lane travels away from the camera and continues through the crossing, pulling ahead because the road in front of it remains clear. On the far left edge, a bicyclist near the curb moves slowly in the same direction and may edge into the lane as the roadway narrows at the crossing. The railroad warning gates are raised and the signals are dark. Striped barriers tighten the approach, creating a constricted passage.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car, because of a clear road ahead. Following the vehicle ahead helps maintain a safe distance and ensures you can react promptly to a cyclist potentially entering or crossing your path under limited visibility of the side."}
{"id": "train_08834", "split": "train", "clip_key": "2020-0214-145407_030423_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "030423"}, "frames": ["2020-0214-145407_030423_movie_t-3.jpg", "2020-0214-145407_030423_movie_t-2.jpg", "2020-0214-145407_030423_movie_t-1.jpg", "2020-0214-145407_030423_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road with three same-direction lanes runs between buildings, with a high concrete wall on the right; the pavement is dry and traffic is heavy and slow-moving. A gray sedan directly ahead in the ego lane slows due to congestion, constraining the ego car's pace. In the adjacent left lane, a black taxi slightly ahead creeps forward alongside in the queue, occupying the space next to the ego vehicle. Farther ahead to the left, a white minivan also brakes in line with the slow traffic. Overhead green direction signs hang before an elevated flyover. The right-side retaining wall leaves no shoulder, tightening the corridor.", "hazard_reasoning": "There is a gray sedan slowing in front of the ego car in the ego lane, because of traffic congestion. The driver should slow down to maintain a safe following distance and adapt to the reduced speed."}
{"id": "train_08835", "split": "train", "clip_key": "titan_clip_832_000426_movie", "source": {"subset": "titan", "scenario": "clip_832", "frame": "000426"}, "frames": ["titan_clip_832_000426_movie_t-3.jpg", "titan_clip_832_000426_movie_t-2.jpg", "titan_clip_832_000426_movie_t-1.jpg", "titan_clip_832_000426_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist ahead", "environment_perception": "A narrow urban commercial street with interlocking-brick pavement functions as a two-way shared lane without a median, and overall traffic is light. Ahead on the right side, a cyclist wearing a black shirt rides toward the ego vehicle along the curb, possibly entering the ego path as the space narrows. On the near right, a pedestrian walks toward the camera beside the roadway, reducing passing clearance. On the left near storefronts, another pedestrian stands at the curb and edges slightly into the street, which may place them in the vehicle's path. A parked scooter on the left and construction fencing on the right further constrict the lane.", "hazard_reasoning": "There is a cyclist wearing a black shirt, cycling on the right side of the road, towards the ego car. The driver should be aware because the cyclist is approaching from the right and may require extra space to avoid a collision."}
{"id": "train_08836", "split": "train", "clip_key": "titan_clip_294_000282_movie", "source": {"subset": "titan", "scenario": "clip_294", "frame": "000282"}, "frames": ["titan_clip_294_000282_movie_t-3.jpg", "titan_clip_294_000282_movie_t-2.jpg", "titan_clip_294_000282_movie_t-1.jpg", "titan_clip_294_000282_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around cyclist", "environment_perception": "An urban residential two-way street with one narrow lane per direction, no median, smooth pavement, and light traffic is seen; green edge strips border both sides. A cyclist in a white shirt carrying a child rides in the middle of the road toward the ego vehicle, approaching steadily and directly in the ego path. Far ahead in the same direction, a small white car proceeds away near the center of the lane without notable change. A person ahead near the center walks toward the right side of the street, briefly occupying the roadway. A large 30 marking on the pavement indicates the posted speed, and numerous parked bicycles along the right curb reduce the usable width.", "hazard_reasoning": "There is a cyclist wearing a white shirt, carrying a child, cycling in the middle of the road, towards the ego car. Since the cyclist and child occupy the center of the lane and are vulnerable, the driver should carefully manoeuvre around them to prevent a collision."}
{"id": "train_08837", "split": "train", "clip_key": "2020-0228-102841_014894_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "014894"}, "frames": ["2020-0228-102841_014894_movie_t-3.jpg", "2020-0228-102841_014894_movie_t-2.jpg", "2020-0228-102841_014894_movie_t-1.jpg", "2020-0228-102841_014894_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban commercial street with no median forms a two-way road, the ego car traveling in the left lane on smooth pavement while traffic is heavy and slow. A black sedan directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle in place. Farther ahead in the same direction, a queue of vans and a truck creeps toward the next block, extending the bottleneck and constraining the pace. On the right, the oncoming lane carries scattered vehicles farther up the street with no immediate interaction. Pedestrians on the left sidewalk walk along the railing and pause by storefronts without entering the roadway.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop to maintain a safe distance and avoid collision with the stopped vehicle ahead."}
{"id": "train_08838", "split": "train", "clip_key": "2020-0214-145407_036732_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "036732"}, "frames": ["2020-0214-145407_036732_movie_t-3.jpg", "2020-0214-145407_036732_movie_t-2.jpg", "2020-0214-145407_036732_movie_t-1.jpg", "2020-0214-145407_036732_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban three-lane arterial runs beneath an elevated expressway, with smooth pavement and no median; traffic is moderate and gradually slowing near an overhead gantry. A white box truck directly ahead in the ego lane slows as traffic bunches ahead, constraining the ego vehicle's pace. A smaller white truck travels slightly ahead in the right adjacent lane, continuing straight and occupying the space for a potential rightward lane change. To the left, a black taxi in the curb lane moves at a similar speed just ahead of the ego car, holding its lane. Overhead green direction signs span the roadway, while buildings line the left and a sound barrier borders the right.", "hazard_reasoning": "There is a white truck in slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid collision due to the reduced speed of the truck ahead."}
{"id": "train_08839", "split": "train", "clip_key": "2020-0210-155354_002712_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "002712"}, "frames": ["2020-0210-155354_002712_movie_t-3.jpg", "2020-0210-155354_002712_movie_t-2.jpg", "2020-0210-155354_002712_movie_t-1.jpg", "2020-0210-155354_002712_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A dense urban shopping street with a single lane in each direction and no median appears smooth but crowded, so traffic moves slowly. The ego car waits in the left lane at a crosswalk while the signal ahead shows green. A white hatchback directly ahead in the ego lane is stopped because of congestion further along, holding the ego vehicle's pace. Oncoming cars in the right lane proceed through the intersection at low speed, staying in their lane. Pedestrians line both sidewalks; one at the left curb pauses by the zebra crossing close to the ego path while others continue walking along the railings.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car because of traffic congestion ahead. The driver should stop to adapt to the slowed traffic and avoid colliding with the stationary vehicle ahead."}
{"id": "train_08840", "split": "train", "clip_key": "titan_clip_1200_000324_movie", "source": {"subset": "titan", "scenario": "clip_1200", "frame": "000324"}, "frames": ["titan_clip_1200_000324_movie_t-3.jpg", "titan_clip_1200_000324_movie_t-2.jpg", "titan_clip_1200_000324_movie_t-1.jpg", "titan_clip_1200_000324_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban side street appears with a single narrow lane and no centerline, bordered closely by buildings; the pavement looks smooth and traffic is light with no moving vehicles visible. A pedestrian wearing a white shirt and black pants sits at the left edge of the roadway near cones, close to the travel path and may enter the lane. Farther ahead, another person walks along the middle of the lane in the same direction, occupying the vehicle's path and constraining pace. On the left a blue van is parked in a small parking bay and bicycles are lined up by the building, further tightening the available space.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, sitting on the left side of the road. The driver should be aware of the stationary pedestrian close to the driving path to avoid a potential collision."}
{"id": "train_08841", "split": "train", "clip_key": "2020-0206-101736_019873_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "019873"}, "frames": ["2020-0206-101736_019873_movie_t-3.jpg", "2020-0206-101736_019873_movie_t-2.jpg", "2020-0206-101736_019873_movie_t-1.jpg", "2020-0206-101736_019873_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial on a slight uphill bridge has two same-direction lanes with guardrails, smooth pavement and a transverse rumble strip, and traffic remains heavy and slow. A black sedan directly ahead in the ego lane is stopped due to congestion ahead, constraining the ego vehicle's pace. In the adjacent right lane, a queue of vehicles including a dark minivan inches forward, occupying the space where a lane change might occur. On the left sidewalk, a pedestrian walks along the fence, well clear of the roadway.", "hazard_reasoning": "There is a black sedan stopped in the ego-car lane, because of traffic congestion ahead. The driver must stop to avoid colliding with this halted vehicle and to comply with the red light."}
{"id": "train_08842", "split": "train", "clip_key": "titan_clip_734_000486_movie", "source": {"subset": "titan", "scenario": "clip_734", "frame": "000486"}, "frames": ["titan_clip_734_000486_movie_t-3.jpg", "titan_clip_734_000486_movie_t-2.jpg", "titan_clip_734_000486_movie_t-1.jpg", "titan_clip_734_000486_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian", "environment_perception": "The scene shows a narrow urban residential bidirectional street with no median and no sidewalks, smooth pavement, and very light traffic. A pedestrian on the left edge ahead walks away from the vehicle along the lane because there is no sidewalk, and his position near the curb may encroach on the ego path. No moving vehicles appear in the same direction or oncoming. Several parked bicycles and planters line the right edge near a building, slightly narrowing the roadway but remaining static.", "hazard_reasoning": "A pedestrian wearing a blue shirt and shorts is walking along the left side of the lane, away from the ego car, because of no sidewalk. As the pedestrian is on the roadway edge, the driver should be cautious to avoid a potential collision."}
{"id": "train_08843", "split": "train", "clip_key": "titan_clip_333_000834_movie", "source": {"subset": "titan", "scenario": "clip_333", "frame": "000834"}, "frames": ["titan_clip_333_000834_movie_t-3.jpg", "titan_clip_333_000834_movie_t-2.jpg", "titan_clip_333_000834_movie_t-1.jpg", "titan_clip_333_000834_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with a single narrow lane and sidewalks appears, the pavement is smooth with no median, and vehicular traffic is light while foot traffic is busy. Ahead at a zebra crossing, a pedestrian in a white shirt carrying a bag crosses from the left to the right across the ego lane, constraining the approach. From the right side, another pedestrian steps onto the crosswalk moving toward the left and continues across the path. Additional pedestrians walk along both sidewalks ahead without entering the lane. Bollards line the curbs, and construction scaffolding stands on the left.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a bag, crossing the street at a pedestrian crossing, from the left side to the right side. The driver should stop because the pedestrian is moving across the vehicle's path, creating a risk of collision if not halted."}
{"id": "train_08844", "split": "train", "clip_key": "2020-0203-114632_002799_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "002799"}, "frames": ["2020-0203-114632_002799_movie_t-3.jpg", "2020-0203-114632_002799_movie_t-2.jpg", "2020-0203-114632_002799_movie_t-1.jpg", "2020-0203-114632_002799_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the parked van", "environment_perception": "An urban commercial street with mid-rise buildings is shown, a two-way road with one lane per direction, no median, and smooth pavement; traffic is moderate near a signalized intersection ahead. A silver van is parked on the left side within the ego lane close by, narrowing the lane and blocking part of the path. A line of oncoming vehicles, led by a black taxi near the centerline, advances toward the camera in their lane and limits room to pass the parked van. Pedestrians crowd the right sidewalk by storefronts and railings, several standing at the curb near the intersection.", "hazard_reasoning": "There is a silver van parked on the left side of the road, in the ego lane. The parked van narrows the lane and could force the driver to slow down or change lanes unexpectedly, so be cautious under this situation."}
{"id": "train_08845", "split": "train", "clip_key": "2020-0217-110854_024665_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "024665"}, "frames": ["2020-0217-110854_024665_movie_t-3.jpg", "2020-0217-110854_024665_movie_t-2.jpg", "2020-0217-110854_024665_movie_t-1.jpg", "2020-0217-110854_024665_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection, the pavement smooth and traffic moderate but momentarily stopped. A white-and-orange bus directly ahead in the ego lane is stationary at a red light, holding the ego vehicle. To the left of the bus, a silver van in the adjacent same-direction lane waits alongside at the stop. In the lane to the right of the bus, a white car is also halted near the intersection, aligned with a right-turn lane that diverges ahead. The overhead traffic signal facing the approach shows red. Buildings and poles line both sides, with clear lane markings and no visible hazards.", "hazard_reasoning": "There is a white-and-orange bus stopped in front of the ego car, because of a red traffic light. The driver must stop to avoid colliding with the stationary bus and comply with the red signal, ensuring a safe braking distance."}
{"id": "train_08846", "split": "train", "clip_key": "titan_clip_629_000726_movie", "source": {"subset": "titan", "scenario": "clip_629", "frame": "000726"}, "frames": ["titan_clip_629_000726_movie_t-3.jpg", "titan_clip_629_000726_movie_t-2.jpg", "titan_clip_629_000726_movie_t-1.jpg", "titan_clip_629_000726_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the stroller.", "environment_perception": "An urban residential two-way street with narrow single lanes and no median stretches ahead on smooth asphalt, and traffic is light with no vehicles visible. Ahead on the right shoulder, two pedestrians push strollers along the white edge line in the same direction as the ego vehicle, so they may constrain its pace; one wears a white hat as noted. A small dog stands on the left sidewalk near a driveway, remaining off the roadway. Buildings and walls closely line the street, creating a confined corridor with limited sight at a small cross street farther ahead.", "hazard_reasoning": "There is a woman wearing a white hat and a green dress and pushing a stroller on the right side of the road, toward the ego car. The driver should manoeuvre carefully around the stroller because it may move unpredictably into the vehicle's path."}
{"id": "train_08847", "split": "train", "clip_key": "titan_clip_943_000558_movie", "source": {"subset": "titan", "scenario": "clip_943", "frame": "000558"}, "frames": ["titan_clip_943_000558_movie_t-3.jpg", "titan_clip_943_000558_movie_t-2.jpg", "titan_clip_943_000558_movie_t-1.jpg", "titan_clip_943_000558_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way roadway, no center divider, and smooth pavement shows light vehicle traffic while the lane bends slightly right, limiting forward view. Ahead at the intersection, a pedestrian in a black shirt crosses and walks in the middle of the roadway, directly in the vehicle's path and likely to govern its pace. On the left curbside close to the camera, another pedestrian walks toward the vehicle and may edge into the lane. Farther ahead near the bend, a small group of pedestrians crosses from right to left, briefly occupying the travel lane. Storefronts and a parked bicycle tighten the margins.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, crossing the street, and walking in the middle of the intersection. The driver should slow down because the pedestrian is directly in the vehicle's path within the intersection."}
{"id": "train_08848", "split": "train", "clip_key": "2020-0226-101332_009894_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "009894"}, "frames": ["2020-0226-101332_009894_movie_t-3.jpg", "2020-0226-101332_009894_movie_t-2.jpg", "2020-0226-101332_009894_movie_t-1.jpg", "2020-0226-101332_009894_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to pedestrian pushing a bicycle", "environment_perception": "An urban two-way road with a single lane in each direction runs through a commercial district, lacking a median and with smooth pavement; traffic is moderate with vehicles queued at an intersection ahead. A pedestrian wearing a cap walks across the ego lane from right to left on the zebra crossing ahead, directly in the vehicle's path and limiting progress. On the right, a cyclist approaches the crosswalk from the near side and appears ready to continue across, potentially entering the lane. On the left, a small group of pedestrians also crosses the same crosswalk toward the near side, keeping the lane blocked. The signal facing the ego direction shows red.", "hazard_reasoning": "There is a pedestrian wearing a cap, pushing a bicycle, and crossing the street, from the right side to the left side, ahead at the crosswalk. The driver should yield to avoid a collision with the pedestrian pushing a bicycle in the crosswalk."}
{"id": "train_08849", "split": "train", "clip_key": "2020-0210-155354_025613_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "025613"}, "frames": ["2020-0210-155354_025613_movie_t-3.jpg", "2020-0210-155354_025613_movie_t-2.jpg", "2020-0210-155354_025613_movie_t-1.jpg", "2020-0210-155354_025613_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "An urban scene shows the ego vehicle on smooth asphalt along a two-lane same-direction road without a median and with moderate traffic. A black mini MPV directly ahead in the left lane continues steadily and limits the ego car's pace. To the right, a yellow dump truck runs slightly ahead with its left indicator blinking and begins moving left to cut in front of the ego car because of the traffic flow, so it may enter the ego lane. Farther ahead, several vehicles queue in the distance and keep overall speeds modest. A side street with a crosswalk appears on the left but does not affect the lane.", "hazard_reasoning": "There is a yellow truck signaling to cut-in in front of the ego-car from the right lane to the left lane because of the traffic flow. Yield to the merging truck to avoid a collision as it performs its lane change."}
{"id": "train_08850", "split": "train", "clip_key": "2020-0226-140503_101210_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "101210"}, "frames": ["2020-0226-140503_101210_movie_t-3.jpg", "2020-0226-140503_101210_movie_t-2.jpg", "2020-0226-140503_101210_movie_t-1.jpg", "2020-0226-140503_101210_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction runs past mid-rise buildings; a low median with guardrail separates oncoming traffic on the right. Pavement is dry and in good condition, and traffic is light approaching a signalized intersection. A gray truck ahead in the ego lane moves away through the intersection under a green light, serving as the lead vehicle in the ego path. A cyclist on the right sidewalk near the corner rolls slowly and then waits by the crosswalk, outside the travel lane. Two pedestrians on the right corner stand near a construction barrier and do not step into the road. A small work area with orange netting sits on the right shoulder but remains clear of traffic.", "hazard_reasoning": "There is a gray truck driving away from the ego car, in the ego lane, because of the green traffic light. Follow the vehicle ahead to maintain safe distance and navigate the intersection smoothly."}
{"id": "train_08851", "split": "train", "clip_key": "titan_clip_1356_000576_movie", "source": {"subset": "titan", "scenario": "clip_1356", "frame": "000576"}, "frames": ["titan_clip_1356_000576_movie_t-3.jpg", "titan_clip_1356_000576_movie_t-2.jpg", "titan_clip_1356_000576_movie_t-1.jpg", "titan_clip_1356_000576_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian crossing ahead", "environment_perception": "An urban commercial street with a narrow undivided roadway; the pavement is in good condition and traffic is light. Two pedestrians just ahead enter from the left edge and cross diagonally toward the right in front of the ego vehicle, constraining its pace. Farther ahead at the right-hand crosswalk, a pedestrian wearing a blue shirt and blue pants crosses away from the ego car within the markings, moving clear of the path. A white van stands by the right curb beside the crosswalk, partly in the lane and narrowing the way.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and blue pants, crossing the street at a pedestrian crosswalk, moving away from the ego car. The driver should be aware of the pedestrian crossing to avoid collision and comply with the traffic signal."}
{"id": "train_08852", "split": "train", "clip_key": "2020-0213-143552_029254_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "029254"}, "frames": ["2020-0213-143552_029254_movie_t-3.jpg", "2020-0213-143552_029254_movie_t-2.jpg", "2020-0213-143552_029254_movie_t-1.jpg", "2020-0213-143552_029254_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrians crossing ahead", "environment_perception": "A narrow urban alley runs between tall buildings, effectively a single lane with no divider, dry pavement, and very light, slow traffic. Space is tight due to parked vehicles and roadside cones. Ahead in the center of the road, a group of pedestrians wearing black, white, and purple shirts walks toward the ego-vehicle, occupying the lane and controlling the pace. A small boxy van is parked along the left curb near them with its nose slightly in the lane, further narrowing the passage. On the right edge ahead, a person stands with a bicycle beside a storefront, stationary but close to the travel path and limiting clearance. Bright orange cones and a roped area line the left side, creating an additional obstacle along the curb.", "hazard_reasoning": "There is a group of pedestrians wearing black, white, and purple shirts and walking towards the ego car, in the middle of the road. The pedestrians are crossing directly ahead, so the driver should yield to them to avoid an accident."}
{"id": "train_08853", "split": "train", "clip_key": "titan_clip_1273_000144_movie", "source": {"subset": "titan", "scenario": "clip_1273", "frame": "000144"}, "frames": ["titan_clip_1273_000144_movie_t-3.jpg", "titan_clip_1273_000144_movie_t-2.jpg", "titan_clip_1273_000144_movie_t-1.jpg", "titan_clip_1273_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with buildings tight to the curb has no centerline and dry, slightly worn pavement; the ego vehicle proceeds along the left side with no motor traffic visible. A pedestrian wearing a black T-shirt and black shorts with a backpack walks away ahead along the left edge of the road, close to the ego path. On the immediate right, a man carrying a bag stands at a garage entrance near the lane, very close to the roadway. Farther ahead on the right, another pedestrian waits by a storefront at the curb, facing the street.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, black shorts, and carrying a backpack, walking on the left side of the road, away from the ego car. The driver should manoeuvre carefully around the pedestrian to avoid collision and maintain safe distance."}
{"id": "train_08854", "split": "train", "clip_key": "2020-0213-143552_031388_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "031388"}, "frames": ["2020-0213-143552_031388_movie_t-3.jpg", "2020-0213-143552_031388_movie_t-2.jpg", "2020-0213-143552_031388_movie_t-1.jpg", "2020-0213-143552_031388_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing.", "environment_perception": "An urban two-way street with one narrow lane per direction and no median stretches ahead; the pavement is smooth and traffic is light with no moving vehicles close to the ego car. A pedestrian in a black suit is ahead, crossing mid-road from the left side to the right side across the ego lane, directly affecting the vehicle's path. At the near zebra crossing, another pedestrian steps from the left curb toward the right, also moving into the ego lane. Farther ahead, several pedestrians walk along the right sidewalk and one crosses at a distant crosswalk, remaining well ahead. A blue pedestrian crossing sign is clearly visible, and no traffic signals appear. Cones and fencing mark a small work area along the left sidewalk.", "hazard_reasoning": "There is a pedestrian wearing a black suit, crossing the street in the middle of the road, from the left side to the right side. The driver should yield because the pedestrian is entering the vehicle's path and could be struck if not given right of way."}
{"id": "train_08855", "split": "train", "clip_key": "2020-0220-151845_036215_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "036215"}, "frames": ["2020-0220-151845_036215_movie_t-3.jpg", "2020-0220-151845_036215_movie_t-2.jpg", "2020-0220-151845_036215_movie_t-1.jpg", "2020-0220-151845_036215_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain a safe distance", "environment_perception": "An urban street under an elevated roadway has two same-direction lanes with no median, smooth pavement, and moderate flow that briefly compresses. A flatbed truck with a tarped load is directly ahead in the ego lane and slows because of congestion ahead. In the adjacent right lane a white van travels slowly near the curb, occupying the passing lane and preventing an easy overtake. Parked cars line the right curb, narrowing the outer lane but leaving the ego lane clear; no salient signals or speed signs are visible.", "hazard_reasoning": "There is a red pickup truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The red pickup truck's reduced speed could require you to adjust your speed to maintain a safe following distance and avoid collision."}
{"id": "train_08856", "split": "train", "clip_key": "2020-0203-154554_031650_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "031650"}, "frames": ["2020-0203-154554_031650_movie_t-3.jpg", "2020-0203-154554_031650_movie_t-2.jpg", "2020-0203-154554_031650_movie_t-1.jpg", "2020-0203-154554_031650_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road under elevated structures has one lane each direction, a yellow centerline, a concrete wall on the left, and a right-side guardrail; the pavement looks smooth and traffic is moderate with a steady oncoming stream. A gray semi truck ahead in the ego lane slows because of traffic congestion ahead, constraining the ego car's pace. In the oncoming lane to the right, a silver van approaches and continues straight past at a steady speed. Farther ahead in the same oncoming lane, a small white truck follows the van and proceeds straight. No salient signals or signs are visible.", "hazard_reasoning": "There is a gray semi truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. Slow down to maintain a safe following distance and prevent a collision."}
{"id": "train_08857", "split": "train", "clip_key": "2020-0227-104226_097594_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "097594"}, "frames": ["2020-0227-104226_097594_movie_t-3.jpg", "2020-0227-104226_097594_movie_t-2.jpg", "2020-0227-104226_097594_movie_t-1.jpg", "2020-0227-104226_097594_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the red SUV", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and smooth asphalt carries heavy, slow traffic, bordered by storefronts on the left and a guardrail on the right. A red SUV directly ahead in the ego lane is stopped for a red traffic light and blocks the ego vehicle's path. Farther ahead in the same line, a white box truck remains stationary, contributing to the queue and constraining the pace once traffic moves. Vehicles in the adjacent left and right lanes are also lined up closely and creep beside the ego car.", "hazard_reasoning": "There is a red SUV stopped in the ego lane, because of the red traffic light, in front of the ego car. Stop behind the red SUV to avoid collision and comply with the traffic signal."}
{"id": "train_08858", "split": "train", "clip_key": "titan_clip_932_000342_movie", "source": {"subset": "titan", "scenario": "clip_932", "frame": "000342"}, "frames": ["titan_clip_932_000342_movie_t-3.jpg", "titan_clip_932_000342_movie_t-2.jpg", "titan_clip_932_000342_movie_t-1.jpg", "titan_clip_932_000342_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked blue van.", "environment_perception": "An urban commercial street with mid-rise buildings has a single one-way travel lane flanked by red-painted curb lanes and smooth pavement; traffic is light and moves slowly. A white box truck ahead in the ego lane proceeds steadily and effectively sets the pace. Several vehicles are parked along both curbs, and a blue van is parked on the left side of the road just ahead, slightly narrowing the usable lane. On the right, a black sedan and a small white van remain stationary in the curb lane and stay outside the travel path. No salient signals or speed signs are visible, and there are no obstacles in the roadway.", "hazard_reasoning": "There is a blue van parked on the left side of the road. The parked van may obstruct your view of oncoming traffic, so you should stay alert."}
{"id": "train_08859", "split": "train", "clip_key": "titan_clip_558_000420_movie", "source": {"subset": "titan", "scenario": "clip_558", "frame": "000420"}, "frames": ["titan_clip_558_000420_movie_t-3.jpg", "titan_clip_558_000420_movie_t-2.jpg", "titan_clip_558_000420_movie_t-1.jpg", "titan_clip_558_000420_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian on right side", "environment_perception": "An urban alley-like street with a single undivided lane and smooth asphalt runs between dense buildings; traffic is light and slow. A bicyclist ahead in the lane rides away near the center, controlling the ego vehicle's pace. On the right side, a pedestrian in a black T-shirt carrying a bag walks away along the curb, roughly in the same direction and close to the travel lane. Another pedestrian at the left foreground moves along the edge and momentarily drifts into the roadway, narrowing the path. Orange cones on the left and several shop signs on the right protrude toward the carriageway, reducing clearance.", "hazard_reasoning": "There is a pedestrian wearing a black t-shirt, carrying a bag, walking on the right side of the road, away from the ego car. The pedestrian might step onto the road unexpectedly, so the driver needs to remain vigilant."}
{"id": "train_08860", "split": "train", "clip_key": "2020-0217-110854_034175_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "034175"}, "frames": ["2020-0217-110854_034175_movie_t-3.jpg", "2020-0217-110854_034175_movie_t-2.jpg", "2020-0217-110854_034175_movie_t-1.jpg", "2020-0217-110854_034175_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A busy urban arterial with dry pavement and a red-painted bus lane on the left runs between tall buildings, and traffic in the same direction bunches up and comes to a stop at an intersection. A gray hatchback directly ahead in the ego lane is stopped for the red light, holding the ego car. A large coach bus is alongside on the right in the adjacent lane, also halted at the light and limiting lateral space. Farther ahead in the left bus lane, a white van waits near the crosswalk and stop area but remains outside the ego path. An overhead signal facing the ego lane shows red above the intersection.", "hazard_reasoning": "There is a gray sedan stopped in front of the ego car, because of a red traffic light. The driver should stop promptly to maintain a safe distance and obey the red signal."}
{"id": "train_08861", "split": "train", "clip_key": "titan_clip_1392_000462_movie", "source": {"subset": "titan", "scenario": "clip_1392", "frame": "000462"}, "frames": ["titan_clip_1392_000462_movie_t-3.jpg", "titan_clip_1392_000462_movie_t-2.jpg", "titan_clip_1392_000462_movie_t-1.jpg", "titan_clip_1392_000462_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban narrow two-way street without a centerline, lined with mid-rise buildings, has dry pavement and light traffic. A black sedan ahead in the same direction stands in a curbside marked bay, narrowing the available lane as the ego approaches. Farther ahead, a white SUV proceeds away in the same direction at a steady pace with a clear gap. On the right side of the road, a pedestrian wearing a white shirt walks toward the ego vehicle along the edge of the carriageway, close to the travel path. Another pedestrian on the left sidewalk walks toward the camera behind a guardrail and remains clear of the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking toward the ego car, on the right side of the road. The pedestrian may step into the lane unexpectedly, so the driver should slow down to ensure sufficient reaction time."}
{"id": "train_08862", "split": "train", "clip_key": "2020-0127-132751_104300_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "104300"}, "frames": ["2020-0127-132751_104300_movie_t-3.jpg", "2020-0127-132751_104300_movie_t-2.jpg", "2020-0127-132751_104300_movie_t-1.jpg", "2020-0127-132751_104300_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-lane road with shops on both sides appears, undivided by a solid yellow center line; the dry pavement looks intact and traffic is slow. A silver van directly ahead in the ego lane is stopped with brake lights on because congestion ahead blocks progression, holding the ego vehicle. An oncoming dark car travels through the opposite lane to the right, continuing steadily and remaining separated by the center line. A pedestrian on the right sidewalk walks near storefronts but stays off the roadway. No traffic signals are visible and no unusual obstacles appear.", "hazard_reasoning": "There is a silver van stopped in front of the ego car, because of traffic congestion ahead. You should stop promptly to maintain a safe distance and avoid a rear-end collision under these conditions."}
{"id": "train_08863", "split": "train", "clip_key": "titan_clip_1357_000558_movie", "source": {"subset": "titan", "scenario": "clip_1357", "frame": "000558"}, "frames": ["titan_clip_1357_000558_movie_t-3.jpg", "titan_clip_1357_000558_movie_t-2.jpg", "titan_clip_1357_000558_movie_t-1.jpg", "titan_clip_1357_000558_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of crossing pedestrian", "environment_perception": "The scene shows a narrow urban street that curves gently left, with a single lane, bollards along both curbs, smooth pavement, and no visible motor traffic. A pedestrian wearing a white shirt and gray pants steps off the right sidewalk and begins crossing toward the left, directly entering the ego vehicle's path. Another person stands at the right curb near the bollards and waits close to the roadway, which may enter the lane. Several pedestrians walk along the left sidewalk ahead, continuing straight and staying off the road. The bend and closely spaced buildings limit sight distance further ahead.", "hazard_reasoning": "A pedestrian wearing a white shirt and gray pants is crossing the street from the right side. The driver should be cautious because the pedestrian is entering the roadway and may not be immediately visible, requiring a reduction in speed to avoid a potential collision."}
{"id": "train_08864", "split": "train", "clip_key": "2020-0214-102601_086404_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "086404"}, "frames": ["2020-0214-102601_086404_movie_t-3.jpg", "2020-0214-102601_086404_movie_t-2.jpg", "2020-0214-102601_086404_movie_t-1.jpg", "2020-0214-102601_086404_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road with a solid centerline passes shops and a gas station; the pavement appears worn but intact, and traffic flows slowly. A gray SUV directly ahead in the ego lane slows, constraining the ego vehicle's pace. Farther ahead in the same direction, a white bus moves slowly near a junction. Bicycles are parked along the left curb.", "hazard_reasoning": "There is a gray SUV slowing down in the ego lane. Slow down to maintain a safe following distance and avoid a potential collision with the decelerating vehicle."}
{"id": "train_08865", "split": "train", "clip_key": "2020-0214-102601_014281_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "014281"}, "frames": ["2020-0214-102601_014281_movie_t-3.jpg", "2020-0214-102601_014281_movie_t-2.jpg", "2020-0214-102601_014281_movie_t-1.jpg", "2020-0214-102601_014281_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to the overtaking van merging ahead", "environment_perception": "An urban arterial with two same-direction lanes and smooth dry pavement runs straight between mid-rise buildings, and traffic appears light to moderate. A white van ahead in the left lane moves past the ego-vehicle, overtaking away from us because a larger vehicle occupies the right lane. Farther ahead, a box truck in the right lane continues steadily and effectively blocks that lane, prompting the van's pass but not directly hindering the ego lane. An overhead guide sign shows Harajuku 300 m.", "hazard_reasoning": "There is a white van overtaking in the left lane away from the ego-car because of another vehicle in the right lane. This overtaking maneuver could result in an unexpected cut-in, so the driver needs to yield to avoid collision."}
{"id": "train_08866", "split": "train", "clip_key": "titan_clip_320_000564_movie", "source": {"subset": "titan", "scenario": "clip_320", "frame": "000564"}, "frames": ["titan_clip_320_000564_movie_t-3.jpg", "titan_clip_320_000564_movie_t-2.jpg", "titan_clip_320_000564_movie_t-1.jpg", "titan_clip_320_000564_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Be cautious of the pedestrian", "environment_perception": "An urban commercial street with a single narrow lane in the ego direction and smooth pavement is bordered by sidewalks; traffic is light. A white van ahead in the ego lane moves slowly away as it nears the zebra crossing, briefly setting the pace. On the right sidewalk, a pedestrian wearing a green T-shirt and black pants walks away from the ego vehicle with a handbag, remaining on the walkway. At the left mouth of a side alley, another pedestrian in dark clothing proceeds along the alley and does not enter the main lane. A pedestrian crossing sign and the zebra crosswalk are clearly visible ahead. Bollards, a raised curb island, and several parked bicycles line the right curb, narrowing the space near the crossing.", "hazard_reasoning": "There is a pedestrian wearing a green t-shirt and black pants, carrying a handbag, and walking on the right side of the road, away from the ego car. As the pedestrian is close to the road edge, they may step into the lane unexpectedly, so the driver should remain vigilant and cautious."}
{"id": "train_08867", "split": "train", "clip_key": "titan_clip_1369_000414_movie", "source": {"subset": "titan", "scenario": "clip_1369", "frame": "000414"}, "frames": ["titan_clip_1369_000414_movie_t-3.jpg", "titan_clip_1369_000414_movie_t-2.jpg", "titan_clip_1369_000414_movie_t-1.jpg", "titan_clip_1369_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the flagperson", "environment_perception": "An urban Japanese street with closely spaced buildings has a narrow two-way carriageway without a median and smooth pavement; traffic is light with no oncoming vehicles visible. Ahead the roadway narrows at a temporary work zone marked by cones, barricades, and signs. In the center ahead, a flagperson in a blue shirt stands in the middle of the road directing traffic at the work zone, controlling the ego vehicle's pace. On the left, several pedestrians walk along the sidewalk near the curb in the same direction as the ego car, keeping to the footpath. On the right, a white van and a small trailer are parked at the curb beside railings, reducing lateral clearance.", "hazard_reasoning": "There is a flagperson wearing a blue shirt and standing in the middle of the road, because he is directing traffic. The flagperson in the road creates a potential conflict point and requires the driver to adjust their path to avoid collision, so careful manoeuvring is necessary in this situation."}
{"id": "train_08868", "split": "train", "clip_key": "titan_clip_1090_000396_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1090_000396_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1090_000396_movie_t-3_augB1.jpg", "titan_clip_1090_000396_movie_t-2_augB1.jpg", "titan_clip_1090_000396_movie_t-1_augB1.jpg", "titan_clip_1090_000396_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian crossing", "environment_perception": "An urban commercial street with shops lines both sides; the brick-paved roadway has no marked lanes or median, the surface looks even, and there are no moving vehicles so flow is light. In the middle ahead, a pedestrian in a white T-shirt carrying a handbag crosses from left to right in front of the ego vehicle, occupying the path and constraining progress. Near the right curb by the convenience store, another pedestrian walks along the frontage toward the right, close to the edge but not entering the roadway. At the left curb, a person stands looking at a phone, remaining stationary and out of the path. A parked bicycle and storefront displays line the right side.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and carrying a handbag, in the middle of the road in front of the ego car, crossing to the right side of the road. The driver should slow down because the pedestrian is directly in the vehicle's path, increasing the risk of collision."}
{"id": "train_08869", "split": "train", "clip_key": "2020-0228-102841_094320_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "094320"}, "frames": ["2020-0228-102841_094320_movie_t-3.jpg", "2020-0228-102841_094320_movie_t-2.jpg", "2020-0228-102841_094320_movie_t-1.jpg", "2020-0228-102841_094320_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to turning sedan", "environment_perception": "An urban two-lane road with a painted centerline and smooth pavement extends ahead; traffic is light in the ego direction while a slow queue builds in the oncoming lane to the right. A white sedan ahead in the ego lane turns left at the upcoming intersection, briefly occupying the path and setting the ego vehicle's pace. To the right, several oncoming vans move slowly, the nearest silver van stopped in a curbside bay, all remaining within their lane. On the left sidewalk, two pedestrians walk forward along the curb without attempting to cross.", "hazard_reasoning": "There is a white sedan turning, on the left side of the intersection, in the ego lane. Therefore, the driver should yield to avoid a collision with the turning vehicle."}
{"id": "train_08870", "split": "train", "clip_key": "2020-0227-104226_054593_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054593"}, "frames": ["2020-0227-104226_054593_movie_t-3.jpg", "2020-0227-104226_054593_movie_t-2.jpg", "2020-0227-104226_054593_movie_t-1.jpg", "2020-0227-104226_054593_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to oncoming vehicle", "environment_perception": "An urban two-way street with one lane each way and no median has smooth pavement and moderate traffic; the ego travels in the left lane approaching a signalized pedestrian crossing. A black hatchback drives toward the ego car on the right side of the road, moving steadily forward. A silver hatchback is parked along the left curb ahead, narrowing the usable lane. A pedestrian waits on the left sidewalk near the crossing without stepping into the road. Pedestrian signals show a green walk indication.", "hazard_reasoning": "There is a black hatchback driving towards the ego car, on the right side of the road. The vehicle is approaching head-on in your lane, so you should yield to avoid a collision under this situation."}
{"id": "train_08871", "split": "train", "clip_key": "titan_clip_880_000054_movie", "source": {"subset": "titan", "scenario": "clip_880", "frame": "000054"}, "frames": ["titan_clip_880_000054_movie_t-3.jpg", "titan_clip_880_000054_movie_t-2.jpg", "titan_clip_880_000054_movie_t-1.jpg", "titan_clip_880_000054_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to merging traffic", "environment_perception": "An urban two-way street with smooth pavement runs between tall buildings, the ego vehicle traveling in the left lane amid slow, light-to-moderate flow. A white van from the left curb noses out and merges into the ego lane directly ahead, entering the path. At the right edge near the ego, a black sedan protrudes slightly from the curb and pauses, yielding while it could otherwise encroach on the lane. Farther ahead in the same direction, a small box truck continues away in the center of the lane and loosely sets the pace. Parked vehicles along both curbs narrow the usable roadway.", "hazard_reasoning": "There is a white van merging into the ego lane, from the left side of the road. The van's lane change could bring it into your path unexpectedly, so you should yield to avoid a collision under this merging maneuver."}
{"id": "train_08872", "split": "train", "clip_key": "2020-0228-102841_019729_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "019729"}, "frames": ["2020-0228-102841_019729_movie_t-3.jpg", "2020-0228-102841_019729_movie_t-2.jpg", "2020-0228-102841_019729_movie_t-1.jpg", "2020-0228-102841_019729_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way road without a median leads into a signalized intersection; the ego car waits in the left lane on smooth pavement while cross traffic flows moderately. A black motorcycle is directly ahead in the ego lane, stopped at the line because the traffic light is red, holding the ego vehicle. Several pedestrians and a cyclist cross the zebra crossing from right to left in front of the ego car, occupying the path. A gray box truck travels left to right on the cross street through the intersection as the cross direction has right of way.", "hazard_reasoning": "There is a black motorcycle stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver must stop to avoid a collision as the light is red and vehicles are halted ahead."}
{"id": "train_08873", "split": "train", "clip_key": "2020-0220-151845_029337_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "029337"}, "frames": ["2020-0220-151845_029337_movie_t-3.jpg", "2020-0220-151845_029337_movie_t-2.jpg", "2020-0220-151845_029337_movie_t-1.jpg", "2020-0220-151845_029337_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial runs under an elevated expressway with two same-direction lanes, a right-side guardrail, and a planted divider separating a side lane; the pavement is smooth and traffic is moderate but loosening. Ahead in the ego lane, a white car speeds up as space opens ahead. In the adjacent right lane, a dark minivan travels slightly ahead in the same direction and continues straight without merging. On the left, a cyclist rides forward in the side lane beyond the curb, remaining outside the ego lane. Overhead gantry signs are visible further ahead.", "hazard_reasoning": "There is a white sedan speeding up in the ego lane, because traffic is clearing ahead. This sudden acceleration can catch the driver off guard, so the driver should start moving promptly to maintain a safe following distance."}
{"id": "train_08874", "split": "train", "clip_key": "2020-0129-105040_099365_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "099365"}, "frames": ["2020-0129-105040_099365_movie_t-3.jpg", "2020-0129-105040_099365_movie_t-2.jpg", "2020-0129-105040_099365_movie_t-1.jpg", "2020-0129-105040_099365_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with at least two lanes in each direction runs straight with a low shrub median and smooth pavement, and traffic moves at a light to moderate flow. A small white flatbed truck is directly ahead in the ego lane, traveling steadily and setting the ego vehicle's pace. In the adjacent right lane, a white sedan continues forward at a similar speed slightly ahead, parallel to the ego vehicle. Across the median to the right, several oncoming cars, including a white van, pass steadily in the opposite carriageway without interacting. A pedestrian on the right sidewalk near the buildings walks along the route, remaining clear of the roadway. Overhead gantries for route signs span the lanes.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08875", "split": "train", "clip_key": "2020-0225-145150_000325_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "000325"}, "frames": ["2020-0225-145150_000325_movie_t-3.jpg", "2020-0225-145150_000325_movie_t-2.jpg", "2020-0225-145150_000325_movie_t-1.jpg", "2020-0225-145150_000325_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with one lane in each direction slopes gently ahead; there is no median, the pavement looks intact and dry, and traffic is light to moderate. There is a red motorcycle driving in the ego lane, away from the ego car, traveling near the centerline and continuing straight. An oncoming black SUV in the opposite lane approaches along the centerline and passes by without encroaching into the ego lane. Pedestrians walk on both sidewalks, one near the left corner and another by the right curb, and they remain off the roadway. A blue sign ahead indicates straight ahead only with time 7-20, and a white truck stands at the right curb near a side street.", "hazard_reasoning": "There is a red motorcycle driving in the ego lane, away from the ego car. You should follow the motorcycle ahead to maintain a safe distance and anticipate sudden braking."}
{"id": "train_08876", "split": "train", "clip_key": "2020-0228-102841_092360_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "092360"}, "frames": ["2020-0228-102841_092360_movie_t-3.jpg", "2020-0228-102841_092360_movie_t-2.jpg", "2020-0228-102841_092360_movie_t-1.jpg", "2020-0228-102841_092360_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow urban two-way road with one lane per direction and a central yellow line runs between closely spaced buildings; the pavement is smooth and traffic in the left ego lane is queued and largely stopped. A white sedan directly ahead in the ego lane is stationary because of congestion ahead, holding the ego car. Farther ahead, a tall white van in the same lane is also stopped in the line, further constraining movement. A guardrail borders the left sidewalk, and no salient signals or signs are visible.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to avoid colliding with the stationary vehicle due to ongoing congestion."}
{"id": "train_08877", "split": "train", "clip_key": "2020-0220-102630_121478_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "121478"}, "frames": ["2020-0220-102630_121478_movie_t-3.jpg", "2020-0220-102630_121478_movie_t-2.jpg", "2020-0220-102630_121478_movie_t-1.jpg", "2020-0220-102630_121478_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way residential road with one lane per direction and an orange centerline runs straight on dry, slightly worn asphalt; traffic is otherwise light. A black hatchback directly ahead in the left ego lane is stopped and remains stationary because of traffic congestion ahead, constraining the ego vehicle's pace. A man on the left sidewalk near the curb stands facing the road but stays clear of the carriageway. No oncoming vehicles are visible nearby. A school-zone warning sign is posted on the right by a side street.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision and adapt to the slowing traffic."}
{"id": "train_08878", "split": "train", "clip_key": "titan_clip_992_000282_movie", "source": {"subset": "titan", "scenario": "clip_992", "frame": "000282"}, "frames": ["titan_clip_992_000282_movie_t-3.jpg", "titan_clip_992_000282_movie_t-2.jpg", "titan_clip_992_000282_movie_t-1.jpg", "titan_clip_992_000282_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked truck", "environment_perception": "A narrow urban two-way street with shops lines both sides, no centerline, and smooth pavement; traffic is light. A small white box truck ahead in the ego lane moves slowly near the center, constraining the pace. A man crosses ahead from left to right at the side junction in front of that truck, causing it to slow. On the right curb a white truck is parked, narrowing the available space, and other vehicles sit in recessed bays along the right frontage. No signals or medians are visible.", "hazard_reasoning": "There is a white truck parked on the right side of the road. This parked vehicle narrows the lane and obstructs visibility, requiring the driver to manoeuvre around it to avoid collision."}
{"id": "train_08879", "split": "train", "clip_key": "titan_clip_1003_000108_movie", "source": {"subset": "titan", "scenario": "clip_1003", "frame": "000108"}, "frames": ["titan_clip_1003_000108_movie_t-3.jpg", "titan_clip_1003_000108_movie_t-2.jpg", "titan_clip_1003_000108_movie_t-1.jpg", "titan_clip_1003_000108_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow single left-running lane is seen between tall buildings; the brick pavers are in good condition and traffic is light. A black car ahead in the ego lane rolls slowly near the left curb, controlling the pace. At the right corner by the storefront, several pedestrians cluster; one steps onto the crosswalk across the ego lane. On the right side of the road, a pedestrian wearing a white shirt and black pants, carrying a handbag, walks away from the ego car along the edge. Farther ahead, more pedestrians proceed along the left sidewalk without entering the roadway. Orange cones line both curbs, narrowing the margins.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black pants, carrying a handbag, walking on the right side of the road, away from the ego car. The driver should slow down because the pedestrian is close to the roadway and may step into the vehicle's path."}
{"id": "train_08880", "split": "train", "clip_key": "titan_clip_430_000456_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_430_000456_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_430_000456_movie_t-3_augB1.jpg", "titan_clip_430_000456_movie_t-2_augB1.jpg", "titan_clip_430_000456_movie_t-1_augB1.jpg", "titan_clip_430_000456_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be cautious of roadside pedestrian", "environment_perception": "A quiet urban two-way street with one narrow lane per direction runs between apartment buildings, with smooth pavement, green edge markings, and orange bollards on the right; traffic is light. Ahead in the ego lane, a pedestrian wearing white clothing comes from the left side of the road and slowly crosses in front of the car, constraining the vehicle's pace. Farther ahead at the T-junction, a white van moves along the cross street from right to left without entering the ego lane. On the right sidewalk near a pole, another pedestrian stands still and remains clear of the roadway. The road bends slightly left beyond the intersection.", "hazard_reasoning": "There is a pedestrian wearing white clothing standing on the left side of the road. The pedestrian may step into the lane unexpectedly, so the driver should remain cautious."}
{"id": "train_08881", "split": "train", "clip_key": "2020-0226-140503_048868_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "048868"}, "frames": ["2020-0226-140503_048868_movie_t-3.jpg", "2020-0226-140503_048868_movie_t-2.jpg", "2020-0226-140503_048868_movie_t-1.jpg", "2020-0226-140503_048868_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A busy urban arterial with three lanes in the ego direction runs between mid-rise buildings, the red pavement is smooth, and traffic is slow and queueing at an intersection. A black sedan is directly ahead in the ego lane and remains stopped for the traffic signal, setting the ego car's pace. To the right, a marked police car in the adjacent lane rolls forward and then stops slightly ahead, remaining alongside the ego vehicle. In the left lane, a white hatchback and a scooter creep forward beside the queue and may merge ahead of the ego car. An overhead traffic signal controls the junction ahead.", "hazard_reasoning": "There's a black sedan that has stopped in front of the ego car in the ego lane, because of red traffic lights. The driver should stop to avoid colliding with the halted vehicle ahead at the red light."}
{"id": "train_08882", "split": "train", "clip_key": "2020-0205-103411_056994_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "056994"}, "frames": ["2020-0205-103411_056994_movie_t-3.jpg", "2020-0205-103411_056994_movie_t-2.jpg", "2020-0205-103411_056994_movie_t-1.jpg", "2020-0205-103411_056994_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multi-lane divided road with smooth pavement runs straight beneath a green signal, and traffic moves at a moderate pace. The ego vehicle follows a white box truck ahead in the ego lane that slows, briefly constraining our speed. A dark car ahead in the adjacent right lane continues through the junction and pulls away, remaining clear of our path. A black sedan is stopped along the left curb by the guardrail, not intruding into the travel lane. Oncoming cars pass to the far right beyond the central median and stay separated.", "hazard_reasoning": "There is a white truck slowing down in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_08883", "split": "train", "clip_key": "titan_clip_853_000186_movie", "source": {"subset": "titan", "scenario": "clip_853", "frame": "000186"}, "frames": ["titan_clip_853_000186_movie_t-3.jpg", "titan_clip_853_000186_movie_t-2.jpg", "titan_clip_853_000186_movie_t-1.jpg", "titan_clip_853_000186_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow single-lane, stone-paved roadway and no centerline is lined by shops and bollards, and traffic is light. The surface appears smooth as the scene approaches a small open area ahead. A pedestrian wearing a white T-shirt, carrying an umbrella and a handbag, crosses from the right to the left ahead of the ego car to reach the sidewalk, stepping through the ego lane. A cyclist farther ahead near the right edge rides in the same direction along the lane and continues straight within the ego path. Two pedestrians on the left walk near the curb and then continue along the sidewalk, staying clear of the roadway.", "hazard_reasoning": "A pedestrian wearing a white t-shirt, carrying an umbrella and a handbag, crosses the street from the right side of the road to the left, towards the ego car to get to the sidewalk. The driver should slow down because the pedestrian is entering the vehicle's path and may step out unexpectedly."}
{"id": "train_08884", "split": "train", "clip_key": "2020-0203-114632_009770_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "009770"}, "frames": ["2020-0203-114632_009770_movie_t-3.jpg", "2020-0203-114632_009770_movie_t-2.jpg", "2020-0203-114632_009770_movie_t-1.jpg", "2020-0203-114632_009770_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction stretches ahead, separated by raised center markers and lined with trees and apartments; the dry pavement shows some patches, and traffic is light. At the left edge near the ego vehicle, a silver sedan is parked partly in the lane, narrowing the usable width as the car proceeds past. Along the right curb ahead, several small vans are parked in a row and remain stationary, reducing lateral clearance. In the opposing lane, a white truck and a few cars approach and continue past within their lane without impeding the ego vehicle.", "hazard_reasoning": "No caption provided. No hazards detected; the driver can continue safely."}
{"id": "train_08885", "split": "train", "clip_key": "2020-0226-101332_061902_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "061902"}, "frames": ["2020-0226-101332_061902_movie_t-3.jpg", "2020-0226-101332_061902_movie_t-2.jpg", "2020-0226-101332_061902_movie_t-1.jpg", "2020-0226-101332_061902_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial approaches a signalized intersection, with three same-direction lanes and intact markings; pavement looks dry and traffic is moderate with vehicles queued at the light. Ahead in the ego lane, a silver van is stopped at the red signal, holding the ego car's path. In the lane to the left, a red taxi slightly ahead also waits in the queue. In the lane to the right, a larger white van moves slowly toward the stop line and comes to a halt beside the ego vehicle, limiting room to change lanes. Overhead traffic lights show red for the ego direction, and pedestrian fencing lines the right edge of the roadway.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe following distance and comply with the red signal."}
{"id": "train_08886", "split": "train", "clip_key": "2020-0207-101955_010051_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "010051"}, "frames": ["2020-0207-101955_010051_movie_t-3.jpg", "2020-0207-101955_010051_movie_t-2.jpg", "2020-0207-101955_010051_movie_t-1.jpg", "2020-0207-101955_010051_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for red light", "environment_perception": "An urban divided arterial with three same-direction lanes runs straight between tall buildings, the dry pavement in good condition as traffic moves from moderate flow to a stop. A green truck ahead in the ego lane is stopped at a red light, directly blocking the path and setting the pace. To its left, a black minivan in the adjacent red-surfaced lane slows and halts alongside while remaining in its lane. To the right, a large dump truck in a lane beyond a hashed separator creeps forward in its queue without merging. Across the median, sparse oncoming traffic continues smoothly.", "hazard_reasoning": "A green truck is stopped in front of the ego car in the ego lane, because the light is red. The ego vehicle needs to stop to comply with the red signal and prevent a collision with the stationary truck."}
{"id": "train_08887", "split": "train", "clip_key": "titan_clip_1060_000348_movie", "source": {"subset": "titan", "scenario": "clip_1060", "frame": "000348"}, "frames": ["titan_clip_1060_000348_movie_t-3.jpg", "titan_clip_1060_000348_movie_t-2.jpg", "titan_clip_1060_000348_movie_t-1.jpg", "titan_clip_1060_000348_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban shopping street with no centerline and smooth pavement shows very light traffic as the ego vehicle proceeds slowly along the single usable lane. Ahead on the left, a cyclist wearing a yellow T-shirt and cap rides away along the left edge, occupying the ego path and constraining speed. On the right, a pedestrian near storefronts walks toward the camera along the curb, close to the travel way where the ego will pass. No other moving vehicles are visible in the immediate path. Parked bicycles and shop displays intrude from the left side, further narrowing the passage.", "hazard_reasoning": "There is a cyclist wearing a yellow t-shirt and cap, cycling away from the ego car, on the left side of the road. Slow down to maintain a safe buffer and be prepared for any unexpected cyclist movements."}
{"id": "train_08888", "split": "train", "clip_key": "titan_clip_1228_000594_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1228_000594_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1228_000594_movie_t-3_augB1.jpg", "titan_clip_1228_000594_movie_t-2_augB1.jpg", "titan_clip_1228_000594_movie_t-1_augB1.jpg", "titan_clip_1228_000594_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban back street with a single lane and no median runs between close buildings; the pavement looks worn and traffic is light with no moving vehicles. A man in beige shorts and a black shirt walks ahead in the middle of the lane, moving away from the ego-vehicle and effectively controlling its pace, as another pedestrian on the left edge prompts him to keep to the center. The second pedestrian continues ahead-left along the green shoulder near the curb and remains close to the travel path. A small white car is parked along the left wall near them, slightly narrowing the lane. No salient traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a man dressed in beige shorts and a black shirt, walking in the middle of the road away from the ego-car because of another pedestrian walking on the left side. The driver should slow down to maintain safe distance and avoid colliding with the pedestrian in the roadway."}
{"id": "train_08889", "split": "train", "clip_key": "2020-0206-101736_006633_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "006633"}, "frames": ["2020-0206-101736_006633_movie_t-3.jpg", "2020-0206-101736_006633_movie_t-2.jpg", "2020-0206-101736_006633_movie_t-1.jpg", "2020-0206-101736_006633_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop at the red light.", "environment_perception": "An urban two-lane road with one lane each way and no median runs between close-set buildings; the pavement is smooth and traffic is light, halted at a signalized intersection. A red sedan directly ahead in the ego lane is stopped because the overhead traffic light is red, holding the ego vehicle. A cyclist on the right sidewalk waits by the crosswalk near the corner, close to the lane and relevant as they may enter the crossing. A few pedestrians stand along the sidewalks and remain off the roadway. The overhead signal facing the ego shows solid red above a zebra crossing.", "hazard_reasoning": "There is a red sedan stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver needs to stop to prevent a rear-end collision at the red light."}
{"id": "train_08890", "split": "train", "clip_key": "2020-0213-143552_005715_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "005715"}, "frames": ["2020-0213-143552_005715_movie_t-3.jpg", "2020-0213-143552_005715_movie_t-2.jpg", "2020-0213-143552_005715_movie_t-1.jpg", "2020-0213-143552_005715_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban multi-lane arterial with no physical median and dry pavement carries light to moderate, steady traffic. Ahead in the left curb lane, a black box truck is parked with its rear open, being unloaded and blocking the ego lane. To the right, a white van and other same-direction vehicles continue forward in the adjacent lane, passing the stopped truck. On the far right, oncoming vans and trucks move smoothly in their lanes. A narrow painted bicycle lane runs along the curb beside the parked truck.", "hazard_reasoning": "There is a black truck parked in front of the ego car, because it is being unloaded. The parked truck blocks the lane and requires careful manoeuvring around it to avoid collision."}
{"id": "train_08891", "split": "train", "clip_key": "2020-0228-102841_083165_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "083165"}, "frames": ["2020-0228-102841_083165_movie_t-3.jpg", "2020-0228-102841_083165_movie_t-2.jpg", "2020-0228-102841_083165_movie_t-1.jpg", "2020-0228-102841_083165_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs through a business district, three same-direction lanes without a median; the pavement is smooth with a dark patch, and traffic flows slowly toward a signalized intersection. A white box truck is directly ahead in the ego lane rolling straight and constraining the ego vehicle's pace. On the left, a white sedan alongside the ego car cuts into the ego lane, edging across the lane line to merge in front. In the right lane slightly ahead, a red coupe continues straight and gradually pulls away. The overhead traffic light facing the ego vehicle shows green.", "hazard_reasoning": "There is a white sedan cutting in to the ego lane from the left lane. This unexpected lane change could reduce the available gap and risk a collision, so the driver should slow down to maintain a safe distance."}
{"id": "train_08892", "split": "train", "clip_key": "2020-0210-142719_002937_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "002937"}, "frames": ["2020-0210-142719_002937_movie_t-3.jpg", "2020-0210-142719_002937_movie_t-2.jpg", "2020-0210-142719_002937_movie_t-1.jpg", "2020-0210-142719_002937_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Stop due to queued traffic and halted cyclist", "environment_perception": "An urban two-way street with one lane in each direction and no median runs toward a railway bridge, the pavement in good condition but traffic moving slowly near the underpass. A cyclist wearing a black jacket and carrying a handbag is stopped directly ahead of the ego vehicle, held by congestion around a white hatchback queueing under the bridge. The white hatchback in the ego lane waits a short distance ahead, constraining the ego vehicle's pace. In the opposing lane to the right, a white box truck approaches steadily toward the bridge with clear separation from the center line. Along the left curb, a work truck loaded with pipes is parked with cones, narrowing the usable lane as pedestrians stand on the sidewalks without entering the road.", "hazard_reasoning": "There is cyclist carrying a handbag and wearing a black jacket stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid colliding with the halted cyclist and queued traffic."}
{"id": "train_08893", "split": "train", "clip_key": "titan_clip_553_000396_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_553_000396_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_553_000396_movie_t-3_augB1.jpg", "titan_clip_553_000396_movie_t-2_augB1.jpg", "titan_clip_553_000396_movie_t-1_augB1.jpg", "titan_clip_553_000396_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian behind truck", "environment_perception": "An urban two-way street with one lane per direction and no median appears; the pavement is smooth and traffic flow is light. On the left ahead, a small cargo truck is stopped at the curb and a pedestrian wearing a gray shirt is loading at its rear, standing near the edge of the ego lane and close to the travel path. An oncoming black car advances in the right lane and passes the camera vehicle, compressing clearance beside the stopped truck. Additional parked vehicles, including another truck farther ahead on the left, narrow the corridor along the curb.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and loading a truck on the left side of the road. The pedestrian could unexpectedly step onto the road from behind the truck, so the driver should anticipate sudden movements and maintain a safe distance."}
{"id": "train_08894", "split": "train", "clip_key": "titan_clip_1067_000096_movie", "source": {"subset": "titan", "scenario": "clip_1067", "frame": "000096"}, "frames": ["titan_clip_1067_000096_movie_t-3.jpg", "titan_clip_1067_000096_movie_t-2.jpg", "titan_clip_1067_000096_movie_t-1.jpg", "titan_clip_1067_000096_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "A narrow urban street runs straight between buildings, with no centerline and a right-side guardrail, functioning as a single shared two-way lane on smooth dry pavement; traffic is very light with no vehicles present. On the left edge ahead, a pedestrian in a blue shirt walks toward the ego vehicle while talking on a phone, partly in the roadway and likely to influence the ego car's pace. Farther ahead, another person moves along the right sidewalk away from the camera and stays clear of the lane. No traffic signals or posted speeds are visible, and there are no parked vehicles or obstacles.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, talking on the phone, walking on the left side of the road, towards the ego car. The pedestrian may enter the vehicle's path unexpectedly, so the driver should manoeuvre around the pedestrian."}
{"id": "train_08895", "split": "train", "clip_key": "2020-0131-135401_077914_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "077914"}, "frames": ["2020-0131-135401_077914_movie_t-3.jpg", "2020-0131-135401_077914_movie_t-2.jpg", "2020-0131-135401_077914_movie_t-1.jpg", "2020-0131-135401_077914_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane divided road with a planted median meets a signalized intersection; the pavement is dry and smooth, and traffic on the cross street is moderate while the ego car waits at the stop line for a red light. Several pedestrians, including one wearing a black coat and carrying a handbag, cross the zebra crossing directly ahead from right to left toward the left side, moving through the ego lane while the red holds vehicles. A white box truck waits ahead-left beyond the crosswalk near the far curb, stationary and not encroaching. Additional cars queue on the far side to the right, remaining stopped.", "hazard_reasoning": "There is a pedestrian wearing a black coat and handbag, crossing at the pedestrian crosswalk to the left side of the road, because of the red light. The driver should stop immediately to yield to the pedestrian and prevent a collision."}
{"id": "train_08896", "split": "train", "clip_key": "2020-0129-105040_043837_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "043837"}, "frames": ["2020-0129-105040_043837_movie_t-3.jpg", "2020-0129-105040_043837_movie_t-2.jpg", "2020-0129-105040_043837_movie_t-1.jpg", "2020-0129-105040_043837_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided arterial runs under an elevated roadway, with multiple same-direction lanes and a guardrail separating an opposite carriageway on the right; the dry pavement carries heavy traffic that is queuing at a junction. A silver hatchback directly ahead in the ego lane is stopped for the red light, holding the ego vehicle. To the left, a large blue truck in the adjacent lane stands slightly ahead in the same queue, limiting any lateral movement. Farther ahead left, a white van and other cars remain stationary in their lanes as the line builds. Overhead signals show red above the approach, and pillars and the roadside barrier narrow the shoulder but pose no immediate hazard.", "hazard_reasoning": "There is a silver hatchback stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The driver should stop to maintain a safe distance and obey the traffic signal."}
{"id": "train_08897", "split": "train", "clip_key": "titan_clip_1293_000300_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1293_000300_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1293_000300_movie_t-3_augB1.jpg", "titan_clip_1293_000300_movie_t-2_augB1.jpg", "titan_clip_1293_000300_movie_t-1_augB1.jpg", "titan_clip_1293_000300_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban street passes a convenience store, with no centerline and freshly resurfaced asphalt; traffic is light. Ahead, a pedestrian carrying an umbrella is in the middle of the road crossing toward the right, directly in the ego path and constraining the pace. Along the right curb near the crossing, a white van is parked facing the camera, encroaching slightly into the roadway and narrowing the available space. Farther ahead in the same direction, a small white box truck waits near the center of the street, leaving limited clearance to continue.", "hazard_reasoning": "There is a pedestrian carrying an umbrella and crossing the street, in the middle of the road, toward the right side. The driver should slow down because the pedestrian is crossing in the middle of the road and may not be seen in time."}
{"id": "train_08898", "split": "train", "clip_key": "titan_clip_228_000312_movie", "source": {"subset": "titan", "scenario": "clip_228", "frame": "000312"}, "frames": ["titan_clip_228_000312_movie_t-3.jpg", "titan_clip_228_000312_movie_t-2.jpg", "titan_clip_228_000312_movie_t-1.jpg", "titan_clip_228_000312_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "An urban one-lane side street between tall buildings has smooth pavement and light traffic as the vehicle approaches a cross street. A white truck is parked on the left while being unloaded, and stacks of materials lie partly in the lane, narrowing the available width. A pedestrian walks ahead near the center of the lane toward the intersection, occupying the vehicle's path. Another worker stands at the truck's rear on the left edge handling cargo, close to the travel lane.", "hazard_reasoning": "There is a parked white truck on the left side of the road, because it is being unloaded. It partially blocks the lane, reducing available width and requiring drivers to adjust their path to avoid collision, so careful maneuvering is necessary."}
{"id": "train_08899", "split": "train", "clip_key": "2020-0203-154554_073760_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "073760"}, "frames": ["2020-0203-154554_073760_movie_t-3.jpg", "2020-0203-154554_073760_movie_t-2.jpg", "2020-0203-154554_073760_movie_t-1.jpg", "2020-0203-154554_073760_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with two-way traffic and no median has dry, smooth pavement; traffic is moderate and slows near an intersection. A brown hatchback directly ahead in the ego lane slows because congestion forms further along, constraining the ego vehicle's pace. Two motorcycles just ahead to the left filter forward along the edge of the lane and pass the hatchback, potentially reentering the ego lane. A pedestrian waits on the far-left corner at the crosswalk without stepping into the road. Oncoming flow runs to the right, separated by lane markings and not encroaching.", "hazard_reasoning": "There is a brown hatchback slowing in the ego lane, because there is traffic congestion ahead. The driver should reduce speed to adapt to slowing traffic and maintain a safe following distance."}
{"id": "train_08900", "split": "train", "clip_key": "2020-0228-102841_030579_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "030579"}, "frames": ["2020-0228-102841_030579_movie_t-3.jpg", "2020-0228-102841_030579_movie_t-2.jpg", "2020-0228-102841_030579_movie_t-1.jpg", "2020-0228-102841_030579_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A quiet urban street runs straight with a single lane in the ego direction, smooth asphalt, a left sidewalk protected by railings, and a guardrail with vegetation on the right; traffic is light with no vehicles ahead or oncoming. Two pedestrians on the left sidewalk near a building entrance walk slowly parallel to the road and occasionally pause, remaining behind the railing and not entering the ego lane. An overhead circular sign shows a 40 speed limit. No obstacles or work zones are visible, and visibility is clear.", "hazard_reasoning": "The road is clear of hazards and pedestrians are at a safe distance on the sidewalk, so the driver can continue at a moderate speed safely."}
{"id": "train_08901", "split": "train", "clip_key": "2020-0220-102630_102847_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "102847"}, "frames": ["2020-0220-102630_102847_movie_t-3.jpg", "2020-0220-102630_102847_movie_t-2.jpg", "2020-0220-102630_102847_movie_t-1.jpg", "2020-0220-102630_102847_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction runs straight on smooth pavement, divided by a low median with raised markers; traffic is light and flows freely. Ahead in the ego lane, a white truck with a green tarp drives away from the ego vehicle at a steady pace, setting the lane's pace. To the right beyond the median, several oncoming cars pass by in their lanes without interaction. Farther ahead, a few same-direction vehicles appear in the right lane but remain distant and stable.", "hazard_reasoning": "There is a white truck with a green tarp driving in the ego lane away from the ego car. This large vehicle can block your view of the road ahead and any potential hazards, so you should maintain extra distance and be aware."}
{"id": "train_08902", "split": "train", "clip_key": "titan_clip_631_000420_movie", "source": {"subset": "titan", "scenario": "clip_631", "frame": "000420"}, "frames": ["titan_clip_631_000420_movie_t-3.jpg", "titan_clip_631_000420_movie_t-2.jpg", "titan_clip_631_000420_movie_t-1.jpg", "titan_clip_631_000420_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street without a centerline runs between buildings, the pavement is smooth, and traffic is light with no moving vehicles seen. Along the left edge ahead, a pedestrian in a white shirt walks toward the ego car because there is no sidewalk, reducing clearance in the ego lane. Just beyond, two more pedestrians keep to the left side and also approach the vehicle, slowing their pace near building entrances and further constricting space. Farther up the road, another person approaches along the same left margin, remaining close to the curb. No signals or speed signs are prominent, and there are no parked vehicles or other obstacles in the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and walking on the left side of the road, towards the ego car, because of the lack of a sidewalk. The driver should slow down to yield and avoid potential collision with the pedestrian encroaching into the lane."}
{"id": "train_08903", "split": "train", "clip_key": "2020-0131-135401_075067_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "075067"}, "frames": ["2020-0131-135401_075067_movie_t-3.jpg", "2020-0131-135401_075067_movie_t-2.jpg", "2020-0131-135401_075067_movie_t-1.jpg", "2020-0131-135401_075067_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with three same-direction lanes and a low hedge median on the right separating oncoming traffic has clean pavement and heavy, slow-moving flow. A black sedan directly ahead in the ego lane slows in a queue because of congestion, constraining the ego car's pace. To the left, a large white box truck ahead creeps forward in its lane alongside the sedan, limiting room to merge. To the right, a cement mixer truck slightly ahead rolls slowly with the line and stays alongside the ego vehicle. Overhead blue guide signs are visible, and lane arrows show the center lane goes straight while the outer lanes indicate turning movements.", "hazard_reasoning": "The black sedan is slowing in front of the ego car in the ego lane because of traffic congestion. The driver should reduce speed to maintain a safe following distance and avoid a collision."}
{"id": "train_08904", "split": "train", "clip_key": "2020-0227-104226_077335_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "077335"}, "frames": ["2020-0227-104226_077335_movie_t-3.jpg", "2020-0227-104226_077335_movie_t-2.jpg", "2020-0227-104226_077335_movie_t-1.jpg", "2020-0227-104226_077335_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "A narrow two-lane urban residential street with no median runs straight ahead; the pavement is dry and in good condition, and traffic is light with an open oncoming lane. A black van ahead in the ego lane proceeds straight at a steady pace, effectively setting the ego vehicle's speed. A dark car sits stationary in a left-side driveway near the curb and does not encroach into the lane. On the right side of the road, a red traffic cone stands at the curb, marking the edge of the roadway.", "hazard_reasoning": "There is a red traffic cone on the right side of the road. The cone may obstruct the driving path and force sudden steering, so the driver should carefully manoeuvre around it to maintain a safe trajectory."}
{"id": "train_08905", "split": "train", "clip_key": "titan_clip_1058_000534_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1058_000534_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1058_000534_movie_t-3_augB1.jpg", "titan_clip_1058_000534_movie_t-2_augB1.jpg", "titan_clip_1058_000534_movie_t-1_augB1.jpg", "titan_clip_1058_000534_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban two-way street with one narrow lane each direction has no median and smooth pavement, but parked vans on the left narrow the usable lane; traffic appears light to moderate as the scene approaches a small intersection. A small flatbed truck ahead in the ego lane slows near the crosswalk and intersection, constraining the ego car's pace. On the left edge, a man wearing a black shirt and black pants walks toward the ego vehicle around a parked van, moving partly in the roadway because of the obstruction and potentially entering the ego lane. On the cross street ahead, a yellow van passes from right to left across the ego vehicle's path, occupying the intersection briefly.", "hazard_reasoning": "There is a man wearing a black shirt and black pants, and walking towards the ego car, on the left side of the road, because of the parked vehicle. The pedestrian is moving into the vehicle's path and requires the driver's attention to avoid a potential collision."}
{"id": "train_08906", "split": "train", "clip_key": "2020-0203-154554_044351_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "044351"}, "frames": ["2020-0203-154554_044351_movie_t-3.jpg", "2020-0203-154554_044351_movie_t-2.jpg", "2020-0203-154554_044351_movie_t-1.jpg", "2020-0203-154554_044351_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban expressway runs through a covered section with multiple lanes in the same direction, bounded by guardrails and sound barriers; the pavement is dry and smooth, and traffic is heavy and largely stopped. A gray sedan is stopped directly ahead in the ego lane because of the congestion ahead, holding the ego vehicle at a standstill. To the right, a black van waits parallel in the adjacent lane with brake lights on, limiting room to merge. Farther ahead in the right lanes, a small flatbed truck and other vehicles inch forward in the queue, reinforcing the jam.", "hazard_reasoning": "A gray sedan is stopped in the ego lane in front of the ego car, because of the traffic congestion ahead. Under this condition, the driver must stop to avoid a collision with the stationary vehicle in low-visibility tunnel lighting."}
{"id": "train_08907", "split": "train", "clip_key": "titan_clip_1217_000294_movie", "source": {"subset": "titan", "scenario": "clip_1217", "frame": "000294"}, "frames": ["titan_clip_1217_000294_movie_t-3.jpg", "titan_clip_1217_000294_movie_t-2.jpg", "titan_clip_1217_000294_movie_t-1.jpg", "titan_clip_1217_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street without a median runs between buildings; the pavement is smooth and traffic is light with no oncoming vehicles. Ahead in the same lane, a small white van moves slowly near the center of the road, slightly constraining the ego vehicle's pace. On the left side close to the curb, a pedestrian wearing a blue shirt and black pants walks away from the ego car along the edge of the roadway, where he may step into the lane. At the far left foreground, another pedestrian also walks forward along the curb, remaining close to the travel path.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, and walking on the left side of the road, away from the ego car. Driver should manoeuvre around the pedestrian to maintain safe clearance."}
{"id": "train_08908", "split": "train", "clip_key": "titan_clip_894_000588_movie", "source": {"subset": "titan", "scenario": "clip_894", "frame": "000588"}, "frames": ["titan_clip_894_000588_movie_t-3.jpg", "titan_clip_894_000588_movie_t-2.jpg", "titan_clip_894_000588_movie_t-1.jpg", "titan_clip_894_000588_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "The scene is an urban commercial street with a narrow single lane, no median, worn asphalt, and light traffic slowed by delivery activity. A white box truck is stopped on the left side being unloaded, and a worker handling blue crates moves beside it at the edge of the lane, which may bring them into the ego path. Another white truck is stopped farther ahead on the left, further pinching the roadway and requiring the ego vehicle to pass slowly. A small car ahead in the same lane advances cautiously past the trucks, constraining the ego vehicle's speed. The right sidewalk is lined with bollards and temporary orange barriers, and no other hazards are apparent.", "hazard_reasoning": "There is a white truck stopped on the left side of the road, because it is being unloaded. The truck is unloading on the left side and blocks part of the lane, requiring careful manoeuvring to avoid collision."}
{"id": "train_08909", "split": "train", "clip_key": "2020-0206-101736_087574_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "087574"}, "frames": ["2020-0206-101736_087574_movie_t-3.jpg", "2020-0206-101736_087574_movie_t-2.jpg", "2020-0206-101736_087574_movie_t-1.jpg", "2020-0206-101736_087574_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes runs past shops and apartments, separated from oncoming traffic by a low hedge median; the dry pavement appears smooth and traffic is light to moderate. Ahead, a gray truck in the ego lane drives away at a steady speed, setting the pace. To the left, a white van in the adjacent lane travels slightly ahead and continues straight roughly parallel to the ego vehicle. On the opposite side of the median, several cars move in the oncoming direction without interacting. Traffic signals span the intersection ahead, and roadside business signs are visible; no obstacles or work zones appear.", "hazard_reasoning": "There is a gray truck driving in the ego lane away from the ego car. The gray truck ahead could influence traffic flow, so the driver should stay vigilant under this situation."}
{"id": "train_08910", "split": "train", "clip_key": "titan_clip_1020_000216_movie", "source": {"subset": "titan", "scenario": "clip_1020", "frame": "000216"}, "frames": ["titan_clip_1020_000216_movie_t-3.jpg", "titan_clip_1020_000216_movie_t-2.jpg", "titan_clip_1020_000216_movie_t-1.jpg", "titan_clip_1020_000216_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to crossing pedestrian", "environment_perception": "An urban commercial street approaches a wide zebra crossing on an undivided road with smooth pavement, and no motor traffic is visible so overall flow is light. Ahead at the crosswalk, a pedestrian wearing a gray T-shirt, black shorts, and a backpack crosses from the right to the left directly across the vehicle's path. Another pedestrian in a white shirt walks across the same crossing from the left toward the center, keeping the crossing active in front of the ego vehicle. A third pedestrian on the right also proceeds leftward over the stripes in front of the car.", "hazard_reasoning": "There is a pedestrian wearing a gray t-shirt, black shorts, and carrying a backpack, crossing the street at a pedestrian crossing, from the right side of the street to the left side. Since the pedestrian is moving across the vehicle's path at the crosswalk, the driver should yield to avoid a possible collision."}
{"id": "train_08911", "split": "train", "clip_key": "2020-0131-135401_001129_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "001129"}, "frames": ["2020-0131-135401_001129_movie_t-3.jpg", "2020-0131-135401_001129_movie_t-2.jpg", "2020-0131-135401_001129_movie_t-1.jpg", "2020-0131-135401_001129_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane in each direction runs between mid-rise buildings; the pavement is smooth and overall traffic is light but the ego lane is halted. A white box truck is directly ahead in the ego lane and remains stopped, blocking the path and constraining the ego vehicle's movement. On the left sidewalk, three pedestrians walk parallel to the road near the curb, continuing along without entering the lane and posing minimal interaction. The opposing lane to the right appears clear of moving vehicles at this moment.", "hazard_reasoning": "There is a white semi-truck stopped in the ego lane. The truck's halted position blocks the lane and conceals potential hazards ahead, so the driver should stop to maintain a safe following distance and avoid collision."}
{"id": "train_08912", "split": "train", "clip_key": "2020-0203-154554_035843_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "035843"}, "frames": ["2020-0203-154554_035843_movie_t-3.jpg", "2020-0203-154554_035843_movie_t-2.jpg", "2020-0203-154554_035843_movie_t-1.jpg", "2020-0203-154554_035843_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban one-way road runs under an elevated expressway, with two marked lanes, a right-side guardrail, smooth pavement, and light traffic moving at a modest pace. Ahead in the ego lane, a white bus slows and the ego vehicle follows behind it, constrained by its pace. In the adjacent right lane, a loaded work truck travels slightly ahead near the guardrail, moving slowly alongside and making a pass to the right impractical. No oncoming traffic appears and there are no pedestrians or obvious hazards; overhead signs and columns line the corridor.", "hazard_reasoning": "There is a white bus slowing down in the ego lane. You should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_08913", "split": "train", "clip_key": "2020-0207-151349_052739_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "052739"}, "frames": ["2020-0207-151349_052739_movie_t-3.jpg", "2020-0207-151349_052739_movie_t-2.jpg", "2020-0207-151349_052739_movie_t-1.jpg", "2020-0207-151349_052739_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes runs beneath an elevated roadway, bordered by shops and a narrow sidewalk; the pavement is intact and traffic is heavy in stop-and-go flow. A white sedan directly ahead in the ego lane accelerates from a stop and then inches forward because congestion blocks the way, controlling the ego vehicle's speed. A large coach bus in the adjacent right lane rolls forward alongside and then edges ahead, keeping close to the diagonal buffer on its left. Farther ahead, a queue of cars fills both lanes and brakes repeatedly, maintaining short gaps that keep movement slow.", "hazard_reasoning": "There is a white sedan accelerating from a stop away from the ego car, in the ego lane, because of traffic congestion ahead. The driver should start moving to keep up with the flow and avoid being left behind."}
{"id": "train_08914", "split": "train", "clip_key": "2020-0228-150133_011570_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "011570"}, "frames": ["2020-0228-150133_011570_movie_t-3.jpg", "2020-0228-150133_011570_movie_t-2.jpg", "2020-0228-150133_011570_movie_t-1.jpg", "2020-0228-150133_011570_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one narrow lane per direction and a solid orange centerline runs between mid-rise buildings; the asphalt is dry and traffic is moderate. A white box truck is directly ahead in the ego lane and slows, constraining the ego car's pace. In the opposing lane to the right, an oncoming taxi passes close by, followed farther ahead by a van and a city bus, all proceeding straight and keeping to their lane. On the left sidewalk, two pedestrians, one pushing a bicycle, move along behind a railing and remain outside the roadway.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. You should slow down to keep a safe distance and prevent a collision when the truck decelerates."}
{"id": "train_08915", "split": "train", "clip_key": "titan_clip_1012_000576_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1012_000576_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1012_000576_movie_t-3_augB1.jpg", "titan_clip_1012_000576_movie_t-2_augB1.jpg", "titan_clip_1012_000576_movie_t-1_augB1.jpg", "titan_clip_1012_000576_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "An urban shopping street with a single narrow lane and no median runs between buildings; the pavement looks worn and vehicle traffic is light amid heavy foot traffic. The ego-vehicle proceeds toward a side street on the right. A pedestrian in a white T-shirt crosses ahead from the left to the right directly in front of the ego-vehicle, occupying the lane. Another man in dark clothing walks ahead near the center of the lane, moving away and constraining the approach. Along the left curb, several people stand with bicycles beside the rail close to the roadway, while a pedestrian waits on the right corner by the crosswalk. A blue mandatory sign indicates straight or right allowed at the junction, and construction barriers with cones line the right edge.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt crossing the street, in front of the ego car, from the left side to the right. The driver should yield to avoid potential collision with the pedestrian entering the vehicle's path."}
{"id": "train_08916", "split": "train", "clip_key": "titan_clip_304_000438_movie", "source": {"subset": "titan", "scenario": "clip_304", "frame": "000438"}, "frames": ["titan_clip_304_000438_movie_t-3.jpg", "titan_clip_304_000438_movie_t-2.jpg", "titan_clip_304_000438_movie_t-1.jpg", "titan_clip_304_000438_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A quiet urban two-way street with single narrow lanes and no median stretches ahead, the pavement smooth and dry, with very light traffic and no vehicles nearby. Green painted edge lanes border both sides. Ahead on the right, a pedestrian in a black shirt and black shorts walks away within the ego lane, occupying part of the path and narrowing the clearance. Farther ahead near the center, a cyclist rides along the street in the same direction, broadly aligned with the ego lane. On the right edge, another person bends over just off the roadway at the curb, close to the travel lane.", "hazard_reasoning": "There is a pedestrian wearing a black shirt and black shorts, walking on the right hand side of the street, away from the ego-car, in the ego lane. The pedestrian occupies the ego lane ahead, posing a collision risk, so the driver should manoeuvre carefully around the pedestrian."}
{"id": "train_08917", "split": "train", "clip_key": "titan_clip_1126_000378_movie", "source": {"subset": "titan", "scenario": "clip_1126", "frame": "000378"}, "frames": ["titan_clip_1126_000378_movie_t-3.jpg", "titan_clip_1126_000378_movie_t-2.jpg", "titan_clip_1126_000378_movie_t-1.jpg", "titan_clip_1126_000378_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around her", "environment_perception": "An urban side street with a single narrow lane and block-paved surface runs between shops on the left and a tree-lined fence on the right; there is no centerline and motor traffic is absent. The ego-vehicle moves ahead as pedestrians share the lane. On the right edge near the ego, a person in a blue shirt pulls a black suitcase and walks toward the vehicle, keeping left of plants that crowd the right shoulder and bringing them close to the travel path. Far ahead near the middle of the lane, another pedestrian walks away in the same direction, constraining the ego's pace. A third person approaches along the left by the storefronts.", "hazard_reasoning": "There is a woman wearing a blue shirt, pulling a black suitcase, and walking on the right side of the road towards the ego-car because of plants on the right shoulder. Because she is walking into the lane, the driver should manoeuvre carefully around her to avoid a collision."}
{"id": "train_08918", "split": "train", "clip_key": "titan_clip_514_000294_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_514_000294_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_514_000294_movie_t-3_augB1.jpg", "titan_clip_514_000294_movie_t-2_augB1.jpg", "titan_clip_514_000294_movie_t-1_augB1.jpg", "titan_clip_514_000294_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow two-way urban shopping street with cobblestone paving and no center line runs between storefronts, and traffic is light at low speed. Ahead in the center of the roadway, a pedestrian wearing blue pants walks away from the ego vehicle along the lane, directly in the path and likely to set the pace. On the right side ahead, a motorcycle with a rider approaches toward the ego vehicle near the curb, using the oncoming side of the same narrow roadway. Several other pedestrians line the sidewalks on both sides, some near shop entrances and close to the curb but remaining off the roadway. No salient traffic signals or signs are visible, and there are no parked vehicles or work zones intruding into the lane.", "hazard_reasoning": "There is a pedestrian wearing blue pants and walking away from the ego car, in the middle of the road. Slow down because a pedestrian is in the road ahead and may not notice the vehicle."}
{"id": "train_08919", "split": "train", "clip_key": "titan_clip_787_000552_movie", "source": {"subset": "titan", "scenario": "clip_787", "frame": "000552"}, "frames": ["titan_clip_787_000552_movie_t-3.jpg", "titan_clip_787_000552_movie_t-2.jpg", "titan_clip_787_000552_movie_t-1.jpg", "titan_clip_787_000552_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A compact urban commercial street with a narrow two-way roadway and no median extends ahead on smooth pavement, and traffic is light with no moving vehicles visible. On the left edge near the curb, a pedestrian wearing a pink T-shirt and a black skirt walks toward the ego vehicle, close to the roadway and may step into the lane. Farther ahead near the zebra crossing, another pedestrian waits at the corner, potentially entering the ego path. A third person walks along the right-side sidewalk ahead, continuing past storefronts without approaching the road. A marked crosswalk spans the intersection ahead.", "hazard_reasoning": "There is a pedestrian wearing a pink T-shirt and a black skirt and walking on the left side of the road, toward the ego car. The pedestrian is approaching the vehicle's path and could step into the lane unexpectedly, so the driver should be aware of pedestrian ahead."}
{"id": "train_08920", "split": "train", "clip_key": "2020-0227-153144_044490_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "044490"}, "frames": ["2020-0227-153144_044490_movie_t-3.jpg", "2020-0227-153144_044490_movie_t-2.jpg", "2020-0227-153144_044490_movie_t-1.jpg", "2020-0227-153144_044490_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes each way and a painted central buffer is dry and in good condition, and traffic moves at a moderate pace. The ego vehicle proceeds in the left lane. A white van ahead in the ego lane speeds up, opening a larger gap to the camera vehicle. On the left curbside ahead, a white box truck with a dark sedan nearby is stopped, occupying the curb lane while the through lane remains open. In the opposite lanes to the right, a black taxi and a silver minivan approach as oncoming traffic, separated by the painted buffer and not interacting with the ego vehicle. Overhead blue direction signs span the roadway.", "hazard_reasoning": "There is a white van speeding up in the ego lane. The van's unexpected acceleration reduces reaction time and could force sudden speed adjustments, so the driver should accelerate to maintain a safe following distance."}
{"id": "train_08921", "split": "train", "clip_key": "2020-0226-140503_056188_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "056188"}, "frames": ["2020-0226-140503_056188_movie_t-3.jpg", "2020-0226-140503_056188_movie_t-2.jpg", "2020-0226-140503_056188_movie_t-1.jpg", "2020-0226-140503_056188_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way road in Japan with the ego vehicle in the left lane approaches a signalized intersection beside a small median island; the pavement is dry and traffic is moderate and steady. On the left crosswalk ahead, a cyclist wearing black pants and carrying two bags rides from left to right across the ego lane as the signal shows green, passing directly in front of the car. Directly ahead, a white van in the same direction proceeds straight at low speed through the junction, setting the pace. To the right of the median, oncoming cars move through the intersection without encroaching on the ego path. A pedestrian overpass spans the junction above.", "hazard_reasoning": "There's a cyclist wearing black pants and carrying two bags, crossing the road from left to right in front of the ego-car, because of green traffic lights. The driver should stop to yield to the cyclist moving into the vehicle's path and prevent a collision."}
{"id": "train_08922", "split": "train", "clip_key": "titan_clip_1292_000528_movie", "source": {"subset": "titan", "scenario": "clip_1292", "frame": "000528"}, "frames": ["titan_clip_1292_000528_movie_t-3.jpg", "titan_clip_1292_000528_movie_t-2.jpg", "titan_clip_1292_000528_movie_t-1.jpg", "titan_clip_1292_000528_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrians", "environment_perception": "A narrow urban two-way street with no median and smooth pavement carries light traffic as the ego vehicle proceeds in the left lane. Buildings line the left and trees with a wall line the right, with roadside utility poles narrowing the margin. On the left edge near the camera, two pedestrians, one in a blue shirt with beige shorts and the other in a gray top with a black skirt, walk away from the ego car along the curb, remaining close to the travel path. A white van ahead in the same lane moves away steadily and governs the ego vehicle's pace. Farther ahead on the left, another pedestrian with a white umbrella walks along the roadside but stays outside the lane. A no-parking sign is visible on the right.", "hazard_reasoning": "There are two pedestrians wearing blue and gray shirts, beige shorts, and a black skirt, and walking away from the ego car, on the left side of the road. Drivers should carefully manoeuvre around the pedestrians in case they step onto the roadway unexpectedly."}
{"id": "train_08923", "split": "train", "clip_key": "titan_clip_787_000426_movie", "source": {"subset": "titan", "scenario": "clip_787", "frame": "000426"}, "frames": ["titan_clip_787_000426_movie_t-3.jpg", "titan_clip_787_000426_movie_t-2.jpg", "titan_clip_787_000426_movie_t-1.jpg", "titan_clip_787_000426_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking on road", "environment_perception": "A narrow two-way urban street with left-side traffic and no median runs past shops; the pavement is smooth and traffic is light as the car approaches a small intersection with a zebra crossing. On the right edge just ahead, a pedestrian in a blue shirt is talking on the phone and walking toward the ego car in the roadway because the sidewalk is narrow, potentially encroaching into the lane. Beside him, another pedestrian walks toward the camera along the curb, reducing clearance on the right.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, talking on the phone, walking on the right side of the road, towards the ego car, because the sidewalk is narrow. The pedestrian may step into the roadway due to the constrained sidewalk, so maintain caution and anticipate possible road entry."}
{"id": "train_08924", "split": "train", "clip_key": "titan_clip_1084_000318_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1084_000318_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1084_000318_movie_t-3_augB1.jpg", "titan_clip_1084_000318_movie_t-2_augB1.jpg", "titan_clip_1084_000318_movie_t-1_augB1.jpg", "titan_clip_1084_000318_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban back street with a single lane and no median runs between close building fronts, the asphalt slightly worn and traffic otherwise very light. On the left edge of the ego lane, a pedestrian wearing a cap, red shirt, and blue shorts stands still against the wall, encroaching on the vehicle's path. Farther ahead in the lane, another pedestrian in dark clothing walks away near the center, continuing straight and effectively setting the pace. No other moving vehicles are visible and no traffic signals or speed limit signs appear. A raised sidewalk lines the right side with storefronts and posters.", "hazard_reasoning": "A pedestrian, wearing a cap, red shirt and blue shorts, is standing in the ego lane, towards the left side of the road. The driver should carefully manoeuvre around the pedestrian to avoid collision."}
{"id": "train_08925", "split": "train", "clip_key": "2020-0205-152530_058093_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "058093"}, "frames": ["2020-0205-152530_058093_movie_t-3.jpg", "2020-0205-152530_058093_movie_t-2.jpg", "2020-0205-152530_058093_movie_t-1.jpg", "2020-0205-152530_058093_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated expressway with two same-direction lanes curves gently right and slightly uphill beneath large flyover ramps, bounded by concrete barriers; the dry pavement looks smooth and traffic is light. A black truck directly ahead in the left ego lane slows, constraining the ego car's pace. A silver car in the right lane draws up from behind and overtakes, continuing ahead beside and then past the truck. No other prominent vehicles, signs, or hazards are visible.", "hazard_reasoning": "There is a black truck that is slowing down in front of the ego car in the ego lane. The truck's deceleration could require the driver to reduce speed to maintain a safe following distance and avoid a rear-end collision."}
{"id": "train_08926", "split": "train", "clip_key": "titan_clip_839_000468_movie", "source": {"subset": "titan", "scenario": "clip_839", "frame": "000468"}, "frames": ["titan_clip_839_000468_movie_t-3.jpg", "titan_clip_839_000468_movie_t-2.jpg", "titan_clip_839_000468_movie_t-1.jpg", "titan_clip_839_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian directing traffic", "environment_perception": "An urban two-way street with one narrow lane per direction and double yellow lines runs between buildings; the pavement looks smooth and traffic is light but slow. An oncoming blue truck approaches in the right-side lane and passes close by, briefly narrowing the available space. Ahead in the ego lane, a small white van slows near a gate entrance and may constrain the ego-vehicle's pace. A pedestrian stands on the right by the curb, watching the roadway and close enough that they could step into the lane. A no-parking sign on a pole at the left edge is clearly visible.", "hazard_reasoning": "There is a pedestrian wearing a yellow vest, standing on the right side of the road, directing traffic. The driver should be aware of the pedestrian directing traffic as they may step into the vehicle's path unexpectedly."}
{"id": "train_08927", "split": "train", "clip_key": "titan_clip_778_000396_movie", "source": {"subset": "titan", "scenario": "clip_778", "frame": "000396"}, "frames": ["titan_clip_778_000396_movie_t-3.jpg", "titan_clip_778_000396_movie_t-2.jpg", "titan_clip_778_000396_movie_t-1.jpg", "titan_clip_778_000396_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian movement", "environment_perception": "An urban neighborhood scene shows a narrow two-way street meeting a cross street, with smooth pavement, no median, and light traffic; a 30 marking is painted on the lane ahead. A cyclist from the left foreground rides across the intersection in front of the ego vehicle toward the right, briefly occupying the path and constraining the pace. A pedestrian wearing a black skirt on the far side of the intersection walks away from the ego car toward the right sidewalk, remaining clear of the travel lane. No other moving vehicles are visible in either direction.", "hazard_reasoning": "There is a pedestrian wearing a black skirt walking on the left side of the intersection away from the ego car. The pedestrian could unexpectedly step back toward the vehicle's path, so the driver should be aware of their movement."}
{"id": "train_08928", "split": "train", "clip_key": "2020-0203-114632_069581_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "069581"}, "frames": ["2020-0203-114632_069581_movie_t-3.jpg", "2020-0203-114632_069581_movie_t-2.jpg", "2020-0203-114632_069581_movie_t-1.jpg", "2020-0203-114632_069581_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way elevated road with one lane each direction is divided by a yellow centerline, the pavement is smooth, and traffic moves at a moderate steady pace. A gray van ahead in the ego lane travels uphill and gradually pulls away as traffic ahead moves, increasing the gap to the ego car. Farther ahead in the same lane, several trucks continue at similar speed and effectively set the pace for the ego's lane. In the opposing lane to the right, a large truck passes nearby and other vehicles approach behind it while remaining in their lane. A roadside sign on the left warns of lane narrowing.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08929", "split": "train", "clip_key": "titan_clip_1254_000300_movie", "source": {"subset": "titan", "scenario": "clip_1254", "frame": "000300"}, "frames": ["titan_clip_1254_000300_movie_t-3.jpg", "titan_clip_1254_000300_movie_t-2.jpg", "titan_clip_1254_000300_movie_t-1.jpg", "titan_clip_1254_000300_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the white van", "environment_perception": "An urban two-way street with one lane per direction runs between mid-rise buildings, the pavement is smooth and traffic is moderate. A white van in the oncoming lane to the right approaches toward the ego vehicle. Farther ahead in the ego lane, a small truck proceeds slowly in the same direction, constraining the ego car's pace. Behind the first oncoming van, other oncoming vehicles approach steadily. Parked cars line the left curb of the ego lane, narrowing the usable width.", "hazard_reasoning": "There is a white van drawing in the oncoming lane, toward the ego car. The van's encroachment into the travel lane creates a risk of collision, so the driver should adjust their path to maintain a safe distance."}
{"id": "train_08930", "split": "train", "clip_key": "titan_clip_1317_000432_movie", "source": {"subset": "titan", "scenario": "clip_1317", "frame": "000432"}, "frames": ["titan_clip_1317_000432_movie_t-3.jpg", "titan_clip_1317_000432_movie_t-2.jpg", "titan_clip_1317_000432_movie_t-1.jpg", "titan_clip_1317_000432_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian ahead", "environment_perception": "An urban side street with a narrow two-way road lacking a centerline has mostly smooth asphalt and light traffic, with no vehicles ahead as the car approaches a zebra crosswalk at an unsignalized intersection. On the left edge in the ego lane, a female pedestrian wearing red shoes and a blue skirt walks forward near the storefronts and may drift into the vehicle's path. On the right side of the ego lane, a man ahead walks away along the curb in the same direction, keeping close to the travel lane and constraining the approach speed. Near the left storefront, a worker with a hand cart stands by stacked boxes at the curb and shifts position, potentially stepping into the lane.", "hazard_reasoning": "There is a female pedestrian wearing red shoes and a blue skirt, walking on the left side of the road, in the ego lane. She is in the vehicle's path and could step further into the lane, so the driver needs to be cautious to avoid a potential collision."}
{"id": "train_08931", "split": "train", "clip_key": "2020-0207-101955_120622_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "120622"}, "frames": ["2020-0207-101955_120622_movie_t-3.jpg", "2020-0207-101955_120622_movie_t-2.jpg", "2020-0207-101955_120622_movie_t-1.jpg", "2020-0207-101955_120622_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road runs under an elevated expressway, with three same-direction lanes and a right-side guardrail; the pavement is dry and smooth, and traffic in our direction is heavy and slow. A blue sedan directly ahead in the ego lane slows in the queue, constraining our pace. To the left, a pink garbage truck slightly ahead creeps forward in its lane alongside, limiting lateral space. Ahead-right, a white hatchback travels near the guardrail with intermittent braking at a similar speed. Vehicles farther ahead are bunched with minimal gaps, and no oncoming traffic is visible.", "hazard_reasoning": "There's a blue sedan slowing down in the ego lane, because of traffic congestion and red traffic lights ahead. You should slow down to maintain a safe distance and prepare for stopping due to reduced flow and the red signal."}
{"id": "train_08932", "split": "train", "clip_key": "titan_clip_142_000078_movie", "source": {"subset": "titan", "scenario": "clip_142", "frame": "000078"}, "frames": ["titan_clip_142_000078_movie_t-3.jpg", "titan_clip_142_000078_movie_t-2.jpg", "titan_clip_142_000078_movie_t-1.jpg", "titan_clip_142_000078_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked white van", "environment_perception": "An urban commercial street with a single narrow two-way carriageway and no median is seen; the pavement is smooth and kerbside parking reduces usable width, with light moving traffic. On the left beside the ego path, a large box truck stands parked and partly intrudes into the lane, constraining the approach. Ahead on the right, a white van is parked at the curb, further narrowing the corridor. Pedestrians on the right sidewalk walk past shopfronts near the hedge but remain clear of the roadway.", "hazard_reasoning": "There is a white van parked on the right side of the road. The parked van reduces the available road width and may obstruct the path, requiring the driver to manoeuvre cautiously."}
{"id": "train_08933", "split": "train", "clip_key": "titan_clip_1074_000312_movie", "source": {"subset": "titan", "scenario": "clip_1074", "frame": "000312"}, "frames": ["titan_clip_1074_000312_movie_t-3.jpg", "titan_clip_1074_000312_movie_t-2.jpg", "titan_clip_1074_000312_movie_t-1.jpg", "titan_clip_1074_000312_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian controlling traffic ahead", "environment_perception": "A narrow urban two-way road climbs toward an underpass, with one lane each direction divided by a solid center line and smooth pavement; traffic is light. Ahead on the right, a worker wearing a yellow vest stands at the edge of the roadway and steps into the chevron-marked area while controlling traffic for roadside work, making him relevant to the ego vehicle's path. A white flatbed truck is stopped on the oncoming side facing the ego, partly near the center and narrowing the passage. Farther ahead on the right, a second work truck is stationary by the curb with another worker standing beside the wall.", "hazard_reasoning": "There is a pedestrian wearing a yellow vest, standing on the right side of the road, because they are controlling traffic. The pedestrian could step into the vehicle's path or signal unexpected movements, requiring the driver to be vigilant under this situation."}
{"id": "train_08934", "split": "train", "clip_key": "titan_clip_323_000534_movie", "source": {"subset": "titan", "scenario": "clip_323", "frame": "000534"}, "frames": ["titan_clip_323_000534_movie_t-3.jpg", "titan_clip_323_000534_movie_t-2.jpg", "titan_clip_323_000534_movie_t-1.jpg", "titan_clip_323_000534_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A narrow urban street with interlocking brick pavement and no center line unfolds ahead, and traffic is light with the ego car moving slowly. A woman crosses directly ahead from left to right while looking at her phone, entering the vehicle's path at close range. There is a black van parked on the left side of the road, its rear protruding slightly into the travel way and narrowing the corridor. Farther ahead near the right curb, a white van stands almost still, creating a tight gap between vehicles along the street.", "hazard_reasoning": "There is a black van parked on the left side of the road. It partially blocks the sidewalk and may hide pedestrians entering the roadway, so the driver should slow down."}
{"id": "train_08935", "split": "train", "clip_key": "titan_clip_560_000282_movie", "source": {"subset": "titan", "scenario": "clip_560", "frame": "000282"}, "frames": ["titan_clip_560_000282_movie_t-3.jpg", "titan_clip_560_000282_movie_t-2.jpg", "titan_clip_560_000282_movie_t-1.jpg", "titan_clip_560_000282_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban side street with a single shared lane and no centerline runs between buildings; the pavement is smooth and traffic is light with no moving vehicles. On the left edge near vending machines, a pedestrian wearing a cap and white T-shirt stands close to the roadway and may step into the ego path. Ahead in the middle of the lane, two pedestrians walk slowly away from the camera, occupying the path and constraining progress. Farther ahead, another person approaches from the right toward the center and may enter the lane. A small white car is stopped on the left ahead, partly in the lane, while bollards and a large tree tighten the right margin.", "hazard_reasoning": "There is a pedestrian wearing a cap and white t-shirt, standing on the left side of the road. The pedestrian may step into the vehicle's path unexpectedly, so the driver should manoeuvre carefully around them."}
{"id": "train_08936", "split": "train", "clip_key": "titan_clip_503_000018_movie", "source": {"subset": "titan", "scenario": "clip_503", "frame": "000018"}, "frames": ["titan_clip_503_000018_movie_t-3.jpg", "titan_clip_503_000018_movie_t-2.jpg", "titan_clip_503_000018_movie_t-1.jpg", "titan_clip_503_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban commercial street with a single narrow shared lane and interlocking-brick pavement runs between storefronts; there is no centerline and no other vehicles, so traffic is light. Building steps along the right reduce lateral space. Ahead on the right, a pedestrian in a blue shirt and black pants walks away from the ego vehicle along the roadway, directly in the ego path and setting the pace. At the right edge near the steps, a man in a white shirt stands facing the street close to the lane, relevant for clearance. Farther ahead near the left side, another pedestrian walks in the same direction, staying to the side.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, walking on the right side of the road, away from the ego car. The pedestrian's proximity and trajectory require the driver to carefully manoeuvre around to avoid a collision."}
{"id": "train_08937", "split": "train", "clip_key": "titan_clip_759_000354_movie", "source": {"subset": "titan", "scenario": "clip_759", "frame": "000354"}, "frames": ["titan_clip_759_000354_movie_t-3.jpg", "titan_clip_759_000354_movie_t-2.jpg", "titan_clip_759_000354_movie_t-1.jpg", "titan_clip_759_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street is shown with a narrow undivided carriageway, worn asphalt, and very light vehicle traffic but heavy pedestrian flow at low speed. A broad group of pedestrians straight ahead occupies the ego lane, crossing and walking along the roadway and directly constraining the car's progress. Ahead left, a pedestrian wearing blue pants and carrying a backpack walks away along the left edge of the road and could drift into the ego path. On the right near side, two pedestrians walk toward the camera along the curb and edge slightly into the roadway, creating a near-side conflict as the car approaches. A black taxi stands curbside on the left, protruding into the lane and narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing blue pants and carrying a backpack, walking on the left side of the road, away from the ego car. The driver should slow down because the pedestrian may unexpectedly enter the vehicle's path."}
{"id": "train_08938", "split": "train", "clip_key": "titan_clip_31_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_31_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_31_000204_movie_t-3_augB1.jpg", "titan_clip_31_000204_movie_t-2_augB1.jpg", "titan_clip_31_000204_movie_t-1_augB1.jpg", "titan_clip_31_000204_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with a single lane each direction and no median has smooth pavement and light traffic. Ahead on the left, a small covered truck is stopped at the curb and partly intrudes into the ego lane; a pedestrian wearing black pants and a shirt stands beside it loading the vehicle close to the roadway. Farther ahead in the same direction, a small green vehicle moves away slowly, setting the pace. On the right sidewalk, several pedestrians walk toward the camera while staying on the footpath. A parked bicycle and delivery carts line the left curb, slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing black pants and a shirt, standing on the left side of the road, because they are loading their vehicle. The driver must manoeuvre carefully around this pedestrian to avoid collision and ensure safe passage."}
{"id": "train_08939", "split": "train", "clip_key": "2020-0131-135401_003820_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "003820"}, "frames": ["2020-0131-135401_003820_movie_t-3.jpg", "2020-0131-135401_003820_movie_t-2.jpg", "2020-0131-135401_003820_movie_t-1.jpg", "2020-0131-135401_003820_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban two-way road with a single narrow lane in each direction and a central yellow line runs between buildings and a fence; the pavement is smooth and strong sun glare comes from the right. Traffic is light, but the ego car is held by a white box truck directly ahead in the ego lane that is stopped and blocking the path. Two pedestrians walk along the left sidewalk ahead, moving away and remaining off the road. An overhead sign displays 40.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane. The stopped vehicle blocks the lane ahead, requiring the driver to stop immediately to avoid a collision."}
{"id": "train_08940", "split": "train", "clip_key": "titan_clip_1335_000276_movie", "source": {"subset": "titan", "scenario": "clip_1335", "frame": "000276"}, "frames": ["titan_clip_1335_000276_movie_t-3.jpg", "titan_clip_1335_000276_movie_t-2.jpg", "titan_clip_1335_000276_movie_t-1.jpg", "titan_clip_1335_000276_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "A narrow urban two-way street with a single undivided lane runs between shopfronts; the asphalt appears smooth and traffic is light with no moving vehicles. On the right edge near the camera, a pedestrian in a white shirt and gray pants walks toward the ego car along the curb, close to the travel lane. Farther ahead near the storefronts, a few pedestrians move along the sidewalks on both sides, remaining outside the lane and not affecting the path. Bicycles and scooters are parked tight to the right-hand curb and storefronts, but no obstacles occupy the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and gray pants, walking along the right side of the road toward the ego car. The driver should anticipate possible lane entry and carefully manoeuvre around the pedestrian to avoid collision."}
{"id": "train_08941", "split": "train", "clip_key": "2020-0131-103016_026675_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "026675"}, "frames": ["2020-0131-103016_026675_movie_t-3.jpg", "2020-0131-103016_026675_movie_t-2.jpg", "2020-0131-103016_026675_movie_t-1.jpg", "2020-0131-103016_026675_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with three same-direction lanes and painted markings has dry pavement and heavy, stop-and-go flow near a roadwork taper. A gray sedan directly ahead in the ego lane slows in queuing traffic, constraining the ego car's pace. A small delivery truck in the left adjacent lane rolls forward and brakes alongside near the cones, remaining close to the ego car. A white SUV in the right-turn lane slightly ahead reduces speed toward the intersection and stays to the right. An arrow board, cones, and construction signs mark the work zone and guide traffic, contributing to the congestion.", "hazard_reasoning": "There is a gray sedan slowing down in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop promptly to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_08942", "split": "train", "clip_key": "2020-0205-103411_116309_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "116309"}, "frames": ["2020-0205-103411_116309_movie_t-3.jpg", "2020-0205-103411_116309_movie_t-2.jpg", "2020-0205-103411_116309_movie_t-1.jpg", "2020-0205-103411_116309_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane arterial with directions separated by a narrow median has dry pavement; traffic in our direction is heavy and mostly stopped, while oncoming flow on the right moves freely. Directly ahead in the ego lane, a black hatchback is stopped because of congestion, holding the ego car. In the adjacent lane to the left, a black minivan is also stopped, limiting lane changes. On the opposite carriageway to the right, a white box truck approaches and continues past without interacting. A pedestrian overpass spans the road ahead.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver needs to stop immediately to avoid a rear-end collision with the stationary vehicle."}
{"id": "train_08943", "split": "train", "clip_key": "titan_clip_200_000078_movie", "source": {"subset": "titan", "scenario": "clip_200", "frame": "000078"}, "frames": ["titan_clip_200_000078_movie_t-3.jpg", "titan_clip_200_000078_movie_t-2.jpg", "titan_clip_200_000078_movie_t-1.jpg", "titan_clip_200_000078_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban intersection between mid-rise buildings comes into view with smooth pavement and light traffic, and the ego vehicle approaches a narrow side street straight ahead with an unsignalized zebra crosswalk and no median. A man in a blue shirt on the right sidewalk walks toward the crosswalk and approaches the ego path, potentially entering the crossing in front of the car. On the left sidewalk near the corner, another pedestrian moves toward the intersection and could step onto the same crosswalk. Farther ahead along the narrow street, a pedestrian continues away on the left side and does not affect the ego lane. A pedestrian crossing sign on the right marks the crosswalk; no traffic signals are visible.", "hazard_reasoning": "There is a man wearing a blue shirt and walking on the sidewalk from the right side towards the ego car, because he is heading towards the crosswalk. The driver should stop to yield to the pedestrian entering the crosswalk and avoid collision."}
{"id": "train_08944", "split": "train", "clip_key": "2020-0204-150838_068360_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "068360"}, "frames": ["2020-0204-150838_068360_movie_t-3.jpg", "2020-0204-150838_068360_movie_t-2.jpg", "2020-0204-150838_068360_movie_t-1.jpg", "2020-0204-150838_068360_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway with three same-direction lanes runs between concrete barriers, the surface smooth and dry, and traffic flows at a steady moderate pace. A silver box truck drives away directly ahead in the ego lane, maintaining speed and effectively setting the ego vehicle's pace. In the adjacent middle lane to the left, another large truck travels slightly ahead and parallel, reducing room for an immediate lane change. Farther left, a small gray minivan proceeds near the left barrier at a similar speed, offering no immediate conflict but further occupying that lane. No salient signs or signals are visible, and the roadway appears clear of hazards.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08945", "split": "train", "clip_key": "titan_clip_1180_000246_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1180_000246_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1180_000246_movie_t-3_augB1.jpg", "titan_clip_1180_000246_movie_t-2_augB1.jpg", "titan_clip_1180_000246_movie_t-1_augB1.jpg", "titan_clip_1180_000246_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane each way runs between mid-rise buildings; the pavement is slightly worn and traffic is light as the ego vehicle approaches a zebra crossing with signals. Ahead in the ego lane near the curb, a small box truck is stopped by the crosswalk, narrowing the lane. On the left edge just before it, a cyclist wearing a helmet rides forward and steers right toward the ego lane to pass the parked vehicle, and may enter the ego path. In the opposite lane, a silver car approaches from ahead as oncoming traffic and continues straight.", "hazard_reasoning": "There is a cyclist wearing a helmet and cycling on the left side of the road, toward the ego lane, because of the parked vehicle. The driver should slow down because the cyclist may merge into the ego lane to pass the parked vehicle, creating a potential collision risk."}
{"id": "train_08946", "split": "train", "clip_key": "2020-0227-104226_105058_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "105058"}, "frames": ["2020-0227-104226_105058_movie_t-3.jpg", "2020-0227-104226_105058_movie_t-2.jpg", "2020-0227-104226_105058_movie_t-1.jpg", "2020-0227-104226_105058_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth pavement approaches a signalized intersection beneath a pedestrian overpass, and traffic is moderate and flowing. A white box truck directly ahead in the ego lane continues straight through the green light, setting the ego car's pace. A white SUV in the lane to the right travels slightly ahead alongside, moving straight and maintaining a parallel position to the ego vehicle. A small hatchback ahead to the left proceeds through the junction in the adjacent lane, remaining clear of the ego path. The traffic signal ahead shows green, and a speed-limit sign is mounted on the overpass.", "hazard_reasoning": "There is a white truck driving in the ego lane, in front of the ego car, because of green traffic lights. Follow the vehicle ahead at a safe distance to account for any sudden deceleration by the truck blocking your view."}
{"id": "train_08947", "split": "train", "clip_key": "2020-0205-103411_091431_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "091431"}, "frames": ["2020-0205-103411_091431_movie_t-3.jpg", "2020-0205-103411_091431_movie_t-2.jpg", "2020-0205-103411_091431_movie_t-1.jpg", "2020-0205-103411_091431_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with two-way traffic runs past shops, with a narrow raised median and bollards on the right; the pavement is smooth and traffic is moderate as the scene approaches a wide intersection. A white mini van ahead in the ego lane drives away at a steady speed, setting the ego car's pace. Farther ahead in the same lane, a dark truck slows near the intersection, which constrains the flow. On the right side beyond the median, several oncoming trucks, including a large white box truck, queue and wait beside the crosswalk area, clearly separated from the ego lane.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08948", "split": "train", "clip_key": "titan_clip_102_000576_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_102_000576_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_102_000576_movie_t-3_augB1.jpg", "titan_clip_102_000576_movie_t-2_augB1.jpg", "titan_clip_102_000576_movie_t-1_augB1.jpg", "titan_clip_102_000576_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street with a narrow single lane paved in bricks has no divider and carries light, slow traffic under an overhead walkway. Ahead in the middle, a pedestrian wearing gray pants crosses from the right storefront area into the lane, entering the ego vehicle's path and constraining speed. Slightly farther ahead on the right edge, a white van sits by the curb and narrows the available lane. On the left near green cones, another pedestrian walks along the roadway edge and could drift into the lane.", "hazard_reasoning": "There is a pedestrian wearing gray pant in the middle of the road as he crosses the street towards the right side. Since this pedestrian may step into the vehicle path and could be obscured by the van, you should slow down to maintain safe control."}
{"id": "train_08949", "split": "train", "clip_key": "titan_clip_203_000144_movie", "source": {"subset": "titan", "scenario": "clip_203", "frame": "000144"}, "frames": ["titan_clip_203_000144_movie_t-3.jpg", "titan_clip_203_000144_movie_t-2.jpg", "titan_clip_203_000144_movie_t-1.jpg", "titan_clip_203_000144_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the truck", "environment_perception": "A narrow urban two-way street with no center line runs between low-rise buildings; the pavement is worn but intact and traffic is light. The ego car proceeds along the left side. A white truck is parked ahead in the ego lane along the left side, partially blocking the path and slowing the ego vehicle. Near this truck, a pedestrian on the left walks along the curb toward the truck and could step around it into the lane as the car approaches. Farther ahead on the right edge, another pedestrian walks away beside storefronts, staying close to the curb. Shop signboards and a hand cart protrude from the right-side sidewalk, slightly narrowing the available roadway.", "hazard_reasoning": "There is a white truck parked in the ego lane, on the left side of the road, in front of the ego car. The driver should manoeuvre around this obstacle to avoid a collision and maintain safe lane positioning."}
{"id": "train_08950", "split": "train", "clip_key": "titan_clip_1284_000408_movie", "source": {"subset": "titan", "scenario": "clip_1284", "frame": "000408"}, "frames": ["titan_clip_1284_000408_movie_t-3.jpg", "titan_clip_1284_000408_movie_t-2.jpg", "titan_clip_1284_000408_movie_t-1.jpg", "titan_clip_1284_000408_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians crossing ahead", "environment_perception": "An urban two-way backstreet with no centerline runs under a railway and approaches a small intersection; the asphalt is dry and slightly worn, and traffic is light with no nearby vehicles in either direction. On the right side of the intersection, two pedestrians, one short and one tall, cross the street moving away from the ego car, occupying the outer edge of the ego lane and drawing close to the vehicle's path. On the left foreground, another pedestrian steps from the sidewalk and walks diagonally to the right across the lane ahead, passing directly in front of the ego path. Farther ahead near the corner, a person stands on the far sidewalk and remains outside the roadway.", "hazard_reasoning": "There are two pedestrians, one short and one tall, crossing the street at the right side of the intersection, moving away from the ego car. Drivers should be aware of their presence to avoid potential collisions while passing through the intersection."}
{"id": "train_08951", "split": "train", "clip_key": "titan_clip_786_000462_movie", "source": {"subset": "titan", "scenario": "clip_786", "frame": "000462"}, "frames": ["titan_clip_786_000462_movie_t-3.jpg", "titan_clip_786_000462_movie_t-2.jpg", "titan_clip_786_000462_movie_t-1.jpg", "titan_clip_786_000462_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "A narrow urban two-way side street with edge lines and smooth pavement stretches ahead, and traffic is light with no oncoming vehicles. Two pedestrians-a cap-wearing adult and a child in a pink shirt riding a tricycle-are along the left edge ahead, moving away from the ego vehicle and keeping close to the curb but remaining relevant to the path. A large white delivery truck stands at the near right curb as the ego passes, briefly narrowing the usable lane. Parking signs are visible along the street. Bicycles and storefronts line the right side, adding roadside clutter but staying stationary.", "hazard_reasoning": "There are two pedestrians, an adult wearing a cap and a child wearing a pink shirt, walking and riding a tricycle on the left side of the road, away from the ego car. They may step into the lane unexpectedly, so the driver should be aware of pedestrians ahead."}
{"id": "train_08952", "split": "train", "clip_key": "titan_clip_1327_000402_movie", "source": {"subset": "titan", "scenario": "clip_1327", "frame": "000402"}, "frames": ["titan_clip_1327_000402_movie_t-3.jpg", "titan_clip_1327_000402_movie_t-2.jpg", "titan_clip_1327_000402_movie_t-1.jpg", "titan_clip_1327_000402_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked van", "environment_perception": "A narrow urban two-way street without lane markings runs between close buildings, with no divider and smooth, slightly damp pavement; traffic is light. Ahead on the left, a white van is parked along the curb beside a brick building, stationary and slightly encroaching into the left-side travel space, constraining the available lane width. No other vehicles are immediately ahead in the same direction, and no oncoming traffic is visible nearby. A no-parking sign on the right fa?ade and several P parking signs are posted along the street.", "hazard_reasoning": "There is a white van parked on the left side of the road. The stationary van narrows the drivable lane and may block sightlines for oncoming traffic or pedestrians stepping into the road, so the driver must navigate cautiously around it to avoid collision."}
{"id": "train_08953", "split": "train", "clip_key": "titan_clip_41_000162_movie", "source": {"subset": "titan", "scenario": "clip_41", "frame": "000162"}, "frames": ["titan_clip_41_000162_movie_t-3.jpg", "titan_clip_41_000162_movie_t-2.jpg", "titan_clip_41_000162_movie_t-1.jpg", "titan_clip_41_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow single-lane, brick-paved surface runs between shops; traffic is light, mixed with pedestrians, and the pavement looks dry and intact. Ahead along the right curb, a white minivan stands stopped, its position intruding slightly into the travel lane and reducing width. On the left near storefront displays, a woman with a ponytail wearing a white T-shirt and green skirt walks away from the ego vehicle along the edge of the road. At the right foreground, a man in business attire walks from the curb into the roadway toward the center ahead of the car, creating a near-field pedestrian conflict. A roadside convex mirror is mounted on the right beside vegetation.", "hazard_reasoning": "There is a woman with a ponytail, wearing a white t-shirt and a green skirt, and walking on the left side of the road, away from the ego car. The pedestrian is close to the roadway and may unexpectedly change direction, so the driver should slow down to ensure safe passing."}
{"id": "train_08954", "split": "train", "clip_key": "titan_clip_510_000288_movie", "source": {"subset": "titan", "scenario": "clip_510", "frame": "000288"}, "frames": ["titan_clip_510_000288_movie_t-3.jpg", "titan_clip_510_000288_movie_t-2.jpg", "titan_clip_510_000288_movie_t-1.jpg", "titan_clip_510_000288_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked truck", "environment_perception": "An urban two-lane two-way street descends between apartment buildings, with a dashed centerline and green-edged shoulders; the pavement is smooth and traffic is light. Ahead in the same-direction left lane, a white truck is parked tight to the curb and being unloaded, encroaching into the ego lane and narrowing the passage. The oncoming right lane remains clear with no visible vehicles. A parking-lot entrance with signs stands on the left, and short cones line the right shoulder without intruding into the roadway.", "hazard_reasoning": "There is a white truck parked on the left side of the road, because it is being unloaded. The parked truck and cones narrow the available roadway, so the driver should carefully manoeuvre around it to avoid collision."}
{"id": "train_08955", "split": "train", "clip_key": "2020-0205-103411_074489_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "074489"}, "frames": ["2020-0205-103411_074489_movie_t-3.jpg", "2020-0205-103411_074489_movie_t-2.jpg", "2020-0205-103411_074489_movie_t-1.jpg", "2020-0205-103411_074489_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with a raised hedge median on the right and smooth pavement carries moderate, slow-moving traffic as vehicles approach a pedestrian overpass. A black truck directly ahead in the ego lane slows and constrains the ego car's pace. To the left, a red kei car travels slightly faster and edges ahead while continuing straight past the truck. Farther ahead in the left lane, a small white truck proceeds under the footbridge, maintaining its lane. No pedestrians or bicycles are visible, and no traffic signals or unusual signage stand out.", "hazard_reasoning": "There is a black truck slowing down in front of the ego car in the ego lane. The driver should slow down to maintain a safe following distance and avoid a collision with the decelerating truck."}
{"id": "train_08956", "split": "train", "clip_key": "2020-0127-132751_005354_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "005354"}, "frames": ["2020-0127-132751_005354_movie_t-3.jpg", "2020-0127-132751_005354_movie_t-2.jpg", "2020-0127-132751_005354_movie_t-1.jpg", "2020-0127-132751_005354_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection, the pavement smooth and traffic heavy with queues in the same direction; no oncoming lanes are visible. A brown dump truck is immediately ahead in the ego lane, fully stopped because of congestion and blocking the path. To the right-front, a small white van in the adjacent lane creeps forward with the queue, running parallel and limiting any rightward merge. A black taxi pulls up alongside on the right, moving slowly past the ego vehicle and further constraining lateral space.", "hazard_reasoning": "There is a brown truck stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should stop to prevent a rear-end collision with the halted truck in the congested traffic."}
{"id": "train_08957", "split": "train", "clip_key": "titan_clip_847_000294_movie", "source": {"subset": "titan", "scenario": "clip_847", "frame": "000294"}, "frames": ["titan_clip_847_000294_movie_t-3.jpg", "titan_clip_847_000294_movie_t-2.jpg", "titan_clip_847_000294_movie_t-1.jpg", "titan_clip_847_000294_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the traffic cone", "environment_perception": "A narrow urban uphill street with a single lane and no centerline runs between close buildings, the pavement smooth and dry, and traffic is light with no nearby moving vehicles. At the left foreground, a pedestrian stands at the curb outside a shop, very near the travel lane and close to the ego path. Farther ahead along the left edge, another pedestrian walks uphill, keeping to the shoulder yet close enough to affect passing clearance. A traffic cone on the right side of the road marks the edge, and additional flexible posts line the margins, narrowing the usable width. No signals or speed signs are clearly visible.", "hazard_reasoning": "There is a traffic cone on the right side of the road. This cone marks a potential roadside hazard, so the driver should manoeuvre carefully around it to avoid collision and maintain safe clearance."}
{"id": "train_08958", "split": "train", "clip_key": "titan_clip_648_000492_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_648_000492_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_648_000492_movie_t-3_augB1.jpg", "titan_clip_648_000492_movie_t-2_augB1.jpg", "titan_clip_648_000492_movie_t-1_augB1.jpg", "titan_clip_648_000492_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban residential street is shown, a very narrow two-way road with edge lines and no centerline, smooth pavement, and light traffic throughout. A cyclist in a brown T-shirt rides toward the camera from ahead in the middle of the roadway, approaching the ego lane and likely constraining its path. A bicycle is parked at the left curb beside bushes, remaining stationary and outside the travel lane. On the right, a roadside construction area bordered by cones and fencing reduces shoulder space but does not intrude into the carriageway. Buildings and utility poles line both sides and no signals or posted speeds are visible.", "hazard_reasoning": "There is a cyclist wearing a brown t-shirt, cycling in the middle of the road, towards the ego car. The driver should slow down to maintain a safe distance and avoid a potential collision with the cyclist."}
{"id": "train_08959", "split": "train", "clip_key": "2020-0203-114632_059672_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "059672"}, "frames": ["2020-0203-114632_059672_movie_t-3.jpg", "2020-0203-114632_059672_movie_t-2.jpg", "2020-0203-114632_059672_movie_t-1.jpg", "2020-0203-114632_059672_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with two lanes in each direction and a short post-separated center median stretches ahead, the pavement clean and smooth with light traffic as the car approaches a signalized crosswalk. An oncoming silver compact car travels through the right-side lanes toward the camera, staying in its lane across the median. A white van follows in the same opposing flow a little behind. On the left curb before the intersection, a white work truck is parked by a business with cones and remains outside the travel lane. Overhead direction boards indicate straight-ahead lanes, and a 50 speed-limit sign is visible on the left while signal heads hang over the junction.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08960", "split": "train", "clip_key": "titan_clip_555_000252_movie", "source": {"subset": "titan", "scenario": "clip_555", "frame": "000252"}, "frames": ["titan_clip_555_000252_movie_t-3.jpg", "titan_clip_555_000252_movie_t-2.jpg", "titan_clip_555_000252_movie_t-1.jpg", "titan_clip_555_000252_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban back street with a single narrow lane and no centerline runs between close buildings; the pavement looks smooth and traffic is very light with no cars present. A pedestrian in a white shirt and black shorts walks toward the ego car along the left edge, close to the travel lane. A cyclist is ahead near the middle of the road moving away at low speed along the ego path, potentially constraining pace. Farther ahead on the right side another pedestrian walks in the same direction near the curb. A shop signboard protrudes from the left onto the roadway beside some parked bicycles.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and black shorts, walking on the left side of the road, toward the ego car. The pedestrian is moving toward the vehicle's path, so the driver should slow down to avoid a potential collision."}
{"id": "train_08961", "split": "train", "clip_key": "2020-0131-135401_059163_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "059163"}, "frames": ["2020-0131-135401_059163_movie_t-3.jpg", "2020-0131-135401_059163_movie_t-2.jpg", "2020-0131-135401_059163_movie_t-1.jpg", "2020-0131-135401_059163_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in the ego direction and opposing lanes to the right runs between mid-rise buildings; the surface is dark and patched, and traffic is moderate. A white van directly ahead in the ego lane accelerates away from the camera as the signal ahead is green. Another white van slightly ahead in the right lane continues straight at a similar pace, paralleling the ego vehicle's path. In the opposite lanes to the right, a large truck approaches and passes, remaining separated by the painted median and not affecting the ego lane. An overhead sign bans right turns.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_08962", "split": "train", "clip_key": "2020-0217-110854_062022_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "062022"}, "frames": ["2020-0217-110854_062022_movie_t-3.jpg", "2020-0217-110854_062022_movie_t-2.jpg", "2020-0217-110854_062022_movie_t-1.jpg", "2020-0217-110854_062022_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane road runs under an elevated structure, the pavement is dry and in good condition, and traffic is moderate with steady flow. A black van directly ahead in the ego lane slows, constraining the ego car's pace. To the right, a white sedan slightly ahead continues straight and gradually pulls ahead in its lane. Farther ahead in the rightmost lane, a small white truck proceeds at a steady speed while keeping its lane. Overhead blue direction signs indicate Hachioji and Chofu ahead and Mitaka and Ogikubo to the right, with a junction shown in 100 m.", "hazard_reasoning": "The black van is slowing in front of the ego car in the ego lane. This reduced speed could require the driver to slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_08963", "split": "train", "clip_key": "2020-0214-145407_017653_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "017653"}, "frames": ["2020-0214-145407_017653_movie_t-3.jpg", "2020-0214-145407_017653_movie_t-2.jpg", "2020-0214-145407_017653_movie_t-1.jpg", "2020-0214-145407_017653_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban signalized intersection on a smooth divided arterial has two lanes in the ego direction, with the left lane continuing straight and the right lane for right turns, and traffic is light. The ego-vehicle approaches under a green light. A white truck ahead in the ego lane slows, constraining the ego car's pace. A black taxi to the left near the curb is stopped at the intersection and remains clear of the ego lane. Oncoming cars on the opposite carriageway move through the junction and pose no conflict.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The slowing truck could force a rapid speed reduction, so follow the vehicle ahead to maintain safe distance."}
{"id": "train_08964", "split": "train", "clip_key": "titan_clip_1283_000042_movie", "source": {"subset": "titan", "scenario": "clip_1283", "frame": "000042"}, "frames": ["titan_clip_1283_000042_movie_t-3.jpg", "titan_clip_1283_000042_movie_t-2.jpg", "titan_clip_1283_000042_movie_t-1.jpg", "titan_clip_1283_000042_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a narrow two-way road and no median shows dry pavement and light, slow traffic. Ahead on the right, a delivery truck is stopped at the curb with its rear doors open and tail lift and step extending into the roadway, reducing the available lane width. Two pedestrians, an adult wearing a cap and a child, walk away from the ego vehicle along the middle of the road because the truck blocks their path, occupying the ego lane. No oncoming vehicles are visible.", "hazard_reasoning": "There are two pedestrians, one a child and one wearing a cap, walking along the middle of the road, away from the ego car, because a truck is blocking their path. The truck forces them into the vehicle's lane, so the driver should slow down to avoid a collision."}
{"id": "train_08965", "split": "train", "clip_key": "2020-0213-143552_065432_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "065432"}, "frames": ["2020-0213-143552_065432_movie_t-3.jpg", "2020-0213-143552_065432_movie_t-2.jpg", "2020-0213-143552_065432_movie_t-1.jpg", "2020-0213-143552_065432_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban divided arterial has two same-direction lanes to the left of a shrub median and smooth pavement, with moderate, steadily moving traffic. Ahead in the ego-vehicle's inner lane by the median, a white box truck slows because congestion forms up the road, and it sets the ego vehicle's pace. In the adjacent outer lane to the left, a dark hatchback runs slightly ahead at a similar speed, keeping alongside and limiting opportunities to pass. Farther ahead in that outer lane, a light-colored sedan continues steadily, adding to the short queue visible ahead. Oncoming traffic flows separately beyond the median and does not interact.", "hazard_reasoning": "There is a white truck slowing down in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow to maintain a safe following distance and adapt to the reduced speed caused by congestion."}
{"id": "train_08966", "split": "train", "clip_key": "2020-0226-140503_011078_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "011078"}, "frames": ["2020-0226-140503_011078_movie_t-3.jpg", "2020-0226-140503_011078_movie_t-2.jpg", "2020-0226-140503_011078_movie_t-1.jpg", "2020-0226-140503_011078_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the merging truck", "environment_perception": "An urban divided road with two same-direction lanes passes mid-rise buildings; the dry pavement looks smooth and traffic is moderate, flowing steadily. A green box truck ahead in the ego lane continues straight and sets the pace. In the adjacent right lane, a silver minivan ahead proceeds straight at a similar speed. From the left, a silver and blue truck merges in front of the ego car from the left side lane into the ego lane, entering the path. Across the shrub median on the right, oncoming cars travel the opposite direction and remain separated.", "hazard_reasoning": "There is a silver and blue truck merging in front of the ego car, from the left lane to the ego lane. Yield to the merging truck to avoid collision."}
{"id": "train_08967", "split": "train", "clip_key": "2020-0214-102601_014467_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "014467"}, "frames": ["2020-0214-102601_014467_movie_t-3.jpg", "2020-0214-102601_014467_movie_t-2.jpg", "2020-0214-102601_014467_movie_t-1.jpg", "2020-0214-102601_014467_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in our direction runs between office buildings, with a planted median and guardrail separating oncoming traffic; the pavement is dry and smooth and traffic is moderate. A white van drives straight ahead in the ego lane at close range, and the ego vehicle follows its pace. To the right, a white minivan in the adjacent lane travels forward slightly ahead, keeping parallel and not merging. Farther ahead the flow remains steady with no sudden changes. An overhead circular sign displays 50, indicating the speed limit. No pedestrians or cyclists appear in the roadway, and no obstacles are visible.", "hazard_reasoning": "There is a white van driving straight, in the ego lane. Since the leading van could decelerate unexpectedly, maintaining a safe following distance reduces collision risk."}
{"id": "train_08968", "split": "train", "clip_key": "2020-0127-132751_067410_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "067410"}, "frames": ["2020-0127-132751_067410_movie_t-3.jpg", "2020-0127-132751_067410_movie_t-2.jpg", "2020-0127-132751_067410_movie_t-1.jpg", "2020-0127-132751_067410_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban divided road with one lane in the ego direction runs toward a signalized intersection, separated from opposing traffic by a metal guardrail; the pavement is smooth and traffic is light. A white van directly ahead in the ego lane is stopped at the intersection under the traffic light, holding the ego car's pace. Across the median, oncoming cars continue through the junction and pose no immediate interaction. A few pedestrians on the left sidewalk near shops and a side street wait away from the roadway. Overhead traffic signals are visible at the intersection.", "hazard_reasoning": "There is a white van stopped in front of the ego-car, in the ego-lane, because of the flashing traffic light ahead at the intersection. You should yield to avoid a rear-end collision with the stationary van."}
{"id": "train_08969", "split": "train", "clip_key": "2020-0210-155354_001387_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "001387"}, "frames": ["2020-0210-155354_001387_movie_t-3.jpg", "2020-0210-155354_001387_movie_t-2.jpg", "2020-0210-155354_001387_movie_t-1.jpg", "2020-0210-155354_001387_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cart.", "environment_perception": "An urban commercial street with one lane in each direction and a dashed center line has smooth pavement, metal railings along both sidewalks, and moderate two-way flow. A white sedan ahead in the ego lane travels steadily and then eases speed, effectively setting our pace. An oncoming black minivan approaches in the right opposing lane and passes without deviation. On the left curbside, a pedestrian pushing a cart stands beside a small parked vehicle while unloading, close to the travel lane and potentially moving into it.", "hazard_reasoning": "There is a pedestrian pushing a cart and standing on the left side of the road, because he is unloading a parked vehicle. The pedestrian's proximity to moving traffic while handling the cart increases collision risk, so drivers should carefully manoeuvre around the cart to avoid an accident."}
{"id": "train_08970", "split": "train", "clip_key": "2020-0131-135401_033712_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "033712"}, "frames": ["2020-0131-135401_033712_movie_t-3.jpg", "2020-0131-135401_033712_movie_t-2.jpg", "2020-0131-135401_033712_movie_t-1.jpg", "2020-0131-135401_033712_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the van carefully", "environment_perception": "An urban two-way road with one lane per direction runs gently uphill toward a signalized intersection, divided by a double yellow centerline on smooth pavement with light traffic. Ahead in the ego lane near the left curb, a black van is parked, occupying part of the lane and narrowing the path. In the opposite lane, a white van approaches from ahead at low speed, reducing the space available to pass the obstruction. Farther ahead on the left beyond the crosswalk, a dark car is stopped at the curb and remains stationary. Overhead signal heads and a pedestrian overpass mark the intersection ahead.", "hazard_reasoning": "There is a black van parked in the ego lane, on the left side of the road. The parked van obstructs the driving lane, requiring the driver to manoeuvre around it to maintain traffic flow and avoid collision under clear visibility."}
{"id": "train_08971", "split": "train", "clip_key": "titan_clip_1173_000174_movie", "source": {"subset": "titan", "scenario": "clip_1173", "frame": "000174"}, "frames": ["titan_clip_1173_000174_movie_t-3.jpg", "titan_clip_1173_000174_movie_t-2.jpg", "titan_clip_1173_000174_movie_t-1.jpg", "titan_clip_1173_000174_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian on road", "environment_perception": "An urban back street with a single narrow lane runs uphill and curves right, bounded by construction fences and cones; the worn asphalt and a parked work truck make the passage tight, and overall traffic is light with no moving vehicles. On the left edge near the camera, a pedestrian carrying a backpack walks toward the ego vehicle along the roadway because there is no sidewalk, passing close to the path. Ahead near the right side, another pedestrian walks away uphill beside the cones in the travel direction and occupies the road margin, reducing available space. A white truck stands parked on the right with its rear protruding into the lane beside a line of orange cones, further narrowing the corridor.", "hazard_reasoning": "A pedestrian carrying a backpack is walking on the left side of the road, toward the ego car because there is no sidewalk. The driver should be cautious and ready to slow down to prevent a collision as the pedestrian may step into the vehicle's path unexpectedly."}
{"id": "train_08972", "split": "train", "clip_key": "2020-0210-155354_005121_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "005121"}, "frames": ["2020-0210-155354_005121_movie_t-3.jpg", "2020-0210-155354_005121_movie_t-2.jpg", "2020-0210-155354_005121_movie_t-1.jpg", "2020-0210-155354_005121_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane each direction approaches a railway underpass; there is no median, the pavement is in good condition, and traffic is slow in congestion. The ego vehicle follows a white hatchback stopped in the same lane amid the queue ahead, which controls the pace. A bicyclist rides just ahead along the left edge of the ego lane beside a parked black van, maintaining a straight line as space tightens toward the bridge. In the oncoming lane to the right, a white sedan approaches under the bridge and continues straight, keeping opposing traffic active. Bridge height markings and right-side cones along the sidewalk are visible, and parked vehicles on the left narrow the corridor.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, because there is traffic congestion, in front of the ego car. The driver should stop to avoid colliding with the halted vehicle due to congestion."}
{"id": "train_08973", "split": "train", "clip_key": "titan_clip_968_000186_movie", "source": {"subset": "titan", "scenario": "clip_968", "frame": "000186"}, "frames": ["titan_clip_968_000186_movie_t-3.jpg", "titan_clip_968_000186_movie_t-2.jpg", "titan_clip_968_000186_movie_t-1.jpg", "titan_clip_968_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban residential two-way road with a single narrow lane in each direction and no median is shown; the pavement is dry and smooth, and traffic is light. On the right ahead, two pedestrians engaged in construction are present: one in a white shirt stands by the curb while another in a blue shirt pushes a trolley toward the middle of the lane, which may enter the ego path. A line of parked work trucks with safety cones occupies the right edge, encroaching into the roadway and further narrowing the clearance. No moving vehicles are visible ahead or as oncoming traffic.", "hazard_reasoning": "There are two pedestrians on the right side of the road, wearing a white shirt and a blue shirt, one standing and one pushing a trolley toward the middle of the lane, because they are performing construction work. The pedestrians could unexpectedly enter the vehicle's path due to construction activity, increasing collision risk, so the driver should slow down to anticipate their movement."}
{"id": "train_08974", "split": "train", "clip_key": "titan_clip_204_000372_movie", "source": {"subset": "titan", "scenario": "clip_204", "frame": "000372"}, "frames": ["titan_clip_204_000372_movie_t-3.jpg", "titan_clip_204_000372_movie_t-2.jpg", "titan_clip_204_000372_movie_t-1.jpg", "titan_clip_204_000372_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian carrying a suitcase", "environment_perception": "An urban back street with narrow two-way geometry and no marked centerline runs between buildings; the pavement is smooth and traffic is light. A white box truck far ahead in the same direction continues straight along the lane and effectively sets the pace. On the right edge, a pedestrian wearing black pants and carrying a suitcase walks away from the ego vehicle along the curb, close to the roadway and potentially entering the lane. No oncoming vehicles are visible. A 30 speed limit appears both painted on the road and on a roadside sign, and a blue directional arrow sign points right near the pole on the far right.", "hazard_reasoning": "A pedestrian wearing black pants and carrying a suitcase is walking on the right side of the road, away from the ego car. The pedestrian may step off the sidewalk into the vehicle's path, so the driver should be aware to anticipate any unexpected crossing."}
{"id": "train_08975", "split": "train", "clip_key": "2020-0221-115122_027653_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "027653"}, "frames": ["2020-0221-115122_027653_movie_t-3.jpg", "2020-0221-115122_027653_movie_t-2.jpg", "2020-0221-115122_027653_movie_t-1.jpg", "2020-0221-115122_027653_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "An elevated urban expressway in a dense urban area has two same-direction lanes under a viaduct, with concrete barriers on the left; the pavement is clean and traffic is heavy, mostly stop-and-go. In the left ego lane, a white car directly ahead is stopped because of congestion and holds the ego-vehicle at a standstill. To the right, a silver minivan alongside creeps forward in the adjacent lane, close to the ego car but staying in its lane. Farther ahead in the right lane, several dark vans inch beneath the span, keeping the queue compact with no clear gaps. No signals or speed signs are prominent, and no pedestrians, cyclists, or other hazards appear.", "hazard_reasoning": "There's a white SUV that has stopped in front of the ego-car in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a collision with the halted vehicle."}
{"id": "train_08976", "split": "train", "clip_key": "titan_clip_914_000510_movie", "source": {"subset": "titan", "scenario": "clip_914", "frame": "000510"}, "frames": ["titan_clip_914_000510_movie_t-3.jpg", "titan_clip_914_000510_movie_t-2.jpg", "titan_clip_914_000510_movie_t-1.jpg", "titan_clip_914_000510_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "An urban narrow one-lane street runs between buildings with no divider and smooth pavement, and traffic is light with no moving vehicles as the road bends slightly right ahead. Two pedestrians are ahead in the roadway: a taller person near the left edge walks away, and a shorter person near the right edge also walks away, both occupying the ego lane. A red delivery scooter is stopped by the left curb ahead, its position jutting slightly into the lane. A large diamond marking is painted on the pavement.", "hazard_reasoning": "There is a tall and short pedestrian walking in the middle of the road, away from the ego car. They occupy the vehicle's path on a narrow, curved street, making them harder to see, so the driver should remain aware of their presence to prevent a collision."}
{"id": "train_08977", "split": "train", "clip_key": "2020-0204-150838_084290_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "084290"}, "frames": ["2020-0204-150838_084290_movie_t-3.jpg", "2020-0204-150838_084290_movie_t-2.jpg", "2020-0204-150838_084290_movie_t-1.jpg", "2020-0204-150838_084290_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Start moving promptly", "environment_perception": "A suburban divided road with two same-direction lanes runs beside a guardrail and sound barrier on the right; the pavement is dry and traffic is heavy and mostly stopped. A dark hatchback directly ahead in the ego lane is stopped because congestion blocks the lane, holding the ego vehicle. In the left lane, a long line of container trucks is queued and mostly stationary alongside, limiting any lane change. Farther ahead, additional trucks and cars remain in line in both lanes, with no oncoming traffic visible and no salient signals or signs.", "hazard_reasoning": "There is a black sedan that has stopped in the ego lane, because of the traffic congestion ahead, in front of the ego car. The driver should be prepared to start moving as soon as the congestion clears to maintain traffic flow and avoid unnecessary delays."}
{"id": "train_08978", "split": "train", "clip_key": "2020-0127-132751_096758_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "096758"}, "frames": ["2020-0127-132751_096758_movie_t-3.jpg", "2020-0127-132751_096758_movie_t-2.jpg", "2020-0127-132751_096758_movie_t-1.jpg", "2020-0127-132751_096758_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop to avoid collision.", "environment_perception": "An urban two-way road with one lane per direction and no physical median is shown; the pavement is dry and intact, with slow traffic in the ego direction and steady opposing flow. A silver minivan is stopped directly ahead in the ego lane because of congestion ahead, holding the ego vehicle. Farther ahead in the same lane, a tall white box truck is also stopped in the queue, limiting forward visibility and contributing to the holdup. Along the left curb, a cyclist rides forward near the edge, remaining just outside the lane but close to the ego path. Oncoming cars pass on the right in their lane without encroaching.", "hazard_reasoning": "There is a silver minivan stopped in front of the ego car in the ego lane, because of traffic congestion ahead. The driver should stop to avoid a rear-end collision with the halted minivan."}
{"id": "train_08979", "split": "train", "clip_key": "2020-0207-101955_000933_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "000933"}, "frames": ["2020-0207-101955_000933_movie_t-3.jpg", "2020-0207-101955_000933_movie_t-2.jpg", "2020-0207-101955_000933_movie_t-1.jpg", "2020-0207-101955_000933_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial approaches a signalized intersection, with two same-direction lanes and a landscaped median with guardrail on the right; the pavement looks clean and traffic flows slowly in a short queue. A black minivan directly ahead in the ego lane is stopped for the red traffic light, holding the ego vehicle. A white box truck in the adjacent left lane is slightly ahead and creeps forward toward the intersection, edging past the stopped queue. A group of pedestrians stands on the far-right corner by the crosswalk, waiting to cross. Overhead traffic signals are visible and show red.", "hazard_reasoning": "There is a black minivan stopped in the ego lane, because of the red traffic lights. The driver should stop to avoid a collision and comply with the red signal."}
{"id": "train_08980", "split": "train", "clip_key": "titan_clip_1097_000288_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1097_000288_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1097_000288_movie_t-3_augB1.jpg", "titan_clip_1097_000288_movie_t-2_augB1.jpg", "titan_clip_1097_000288_movie_t-1_augB1.jpg", "titan_clip_1097_000288_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban intersection with one lane each way and no median lies ahead on smooth pavement, and traffic is light. On the right, a pedestrian steps onto the zebra crossing and walks left across the ego lane, directly occupying the path. On the left side just beyond the crosswalk, a pedestrian in black pants pushes a handcart along the roadway because a parked vehicle blocks the curb, edging near the ego lane and potentially entering it. Farther ahead in the same direction, a small delivery scooter travels slowly away from the intersection, setting a gentle pace. The pedestrian signal is lit green for the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing black pants and pushing a handcart on the left side of the road, in front of the ego-car, because of the parked vehicle. The pedestrian may need to move into the driving lane to pass the obstruction, so the driver should slow down to avoid a collision."}
{"id": "train_08981", "split": "train", "clip_key": "2020-0220-102630_029799_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "029799"}, "frames": ["2020-0220-102630_029799_movie_t-3.jpg", "2020-0220-102630_029799_movie_t-2.jpg", "2020-0220-102630_029799_movie_t-1.jpg", "2020-0220-102630_029799_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way street with one narrow lane per direction runs between mid-rise buildings, and the smooth pavement carries slow traffic due to a partial lane blockage ahead marked by cones around a parked flatbed and a delivery truck. A black motorcycle stops in the ego lane just ahead because of the parked vehicle, holding our lane. Another scooter farther ahead near the centerline edges forward to pass the obstruction and may merge back into the ego lane ahead of us. A white hatchback ahead to the right crawls past the blockage in the same direction, further constraining our pace. Parked vehicles line the curb, leaving a tight passage.", "hazard_reasoning": "There is a black motorcycle stopped in the ego lane, in front of the ego car, because of a parked vehicle. The stopped motorcycle blocks the lane and requires the driver to stop to avoid a collision."}
{"id": "train_08982", "split": "train", "clip_key": "2020-0226-101332_004585_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "004585"}, "frames": ["2020-0226-101332_004585_movie_t-3.jpg", "2020-0226-101332_004585_movie_t-2.jpg", "2020-0226-101332_004585_movie_t-1.jpg", "2020-0226-101332_004585_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban signalized intersection with a single lane each way and no median is ahead; the asphalt is in good condition and traffic is light. The ego vehicle is stopped at the crosswalk under a red light. Directly ahead, a pedestrian in a red jacket pushes a stroller across from left to right in the ego lane, crossing because the vehicle signal is red. On the far left, another pedestrian steps off the curb and continues across the zebra in front of the car. In the middle distance, a white van moves across the intersection from right to left on the cross street, passing ahead without entering the ego lane.", "hazard_reasoning": "There is a pedestrian wearing a red jacket, crossing the street at a pedestrian crossing, from the left side to the right side, because of a red traffic light. The driver should stop to yield to the pedestrian crossing and avoid a collision."}
{"id": "train_08983", "split": "train", "clip_key": "titan_clip_754_000042_movie", "source": {"subset": "titan", "scenario": "clip_754", "frame": "000042"}, "frames": ["titan_clip_754_000042_movie_t-3.jpg", "titan_clip_754_000042_movie_t-2.jpg", "titan_clip_754_000042_movie_t-1.jpg", "titan_clip_754_000042_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around parked vehicle.", "environment_perception": "A narrow urban side street with no centerline and smooth pavement leads to a small intersection, and traffic is very light with only stationary vehicles visible. At the intersection ahead, a black van is parked along the left curb, narrowing the approach and partially blocking sight lines. Ahead to the right near the corner, a light-blue box truck stands at the curb and remains stationary, outside the ego path. On the left foreground and the right sidewalk, two pedestrians stand near building entrances, remaining on the sidewalks and not entering the roadway. A prominent stop marking is painted on the lane before the intersection, and several bicycles are parked along both curbs.", "hazard_reasoning": "There is a black van parked on the left side of the intersection. It reduces available road space and visibility at the intersection, so the driver should carefully manoeuvre around it."}
{"id": "train_08984", "split": "train", "clip_key": "2020-0203-154554_042992_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "042992"}, "frames": ["2020-0203-154554_042992_movie_t-3.jpg", "2020-0203-154554_042992_movie_t-2.jpg", "2020-0203-154554_042992_movie_t-1.jpg", "2020-0203-154554_042992_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with a single lane each direction curves gently left beneath an elevated roadway, lined by high concrete walls; the pavement appears dry and traffic is light. A gray SUV ahead in the ego lane is slowing along the curve, constraining the ego vehicle's pace. An oncoming motorcycle to the right travels straight in its lane under the viaduct, relevant as it occupies the narrow opposing path. No traffic signals or posted speeds are visible, and the overpass pillars and curve create a partially blind section ahead.", "hazard_reasoning": "There is a gray SUV slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe following distance and avoid a collision with the slowing vehicle ahead."}
{"id": "train_08985", "split": "train", "clip_key": "2020-0131-135401_072627_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "072627"}, "frames": ["2020-0131-135401_072627_movie_t-3.jpg", "2020-0131-135401_072627_movie_t-2.jpg", "2020-0131-135401_072627_movie_t-1.jpg", "2020-0131-135401_072627_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to maintain safe distance", "environment_perception": "An urban arterial with three same-direction lanes runs between tall buildings on smooth asphalt, and traffic is heavy and mostly stop-and-go. An overhead blue guide sign shows three straight arrows indicating through lanes. A black hatchback directly ahead in the ego lane is stopped because congestion blocks the way, and it sets the ego vehicle's pace. In the adjacent right lane ahead, a dark minivan crawls forward parallel to the ego lane, keeping close spacing that reduces lateral room. A silver van to the immediate right is slightly ahead in the rightmost lane and rolls slowly with the queue, leaving no practical gap for a rightward lane change.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance."}
{"id": "train_08986", "split": "train", "clip_key": "2020-0212-102546_094845_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "094845"}, "frames": ["2020-0212-102546_094845_movie_t-3.jpg", "2020-0212-102546_094845_movie_t-2.jpg", "2020-0212-102546_094845_movie_t-1.jpg", "2020-0212-102546_094845_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multilane road beneath elevated expressways features wide hatched dividers, concrete barriers, and smooth pavement, with moderate, steady traffic approaching an interchange. A white truck ahead in the ego lane slows and briefly constrains the ego car's pace. A white van slightly ahead to the left in the adjacent lane continues straight at a steady speed and remains in its lane. Another vehicle ahead to the right proceeds straight without encroaching on the ego lane. Overhead blue direction signs mark upcoming route choices, and tall sound walls line both sides.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car, because of a red traffic light. You should slow down to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_08987", "split": "train", "clip_key": "2020-0227-104226_043582_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "043582"}, "frames": ["2020-0227-104226_043582_movie_t-3.jpg", "2020-0227-104226_043582_movie_t-2.jpg", "2020-0227-104226_043582_movie_t-1.jpg", "2020-0227-104226_043582_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Yield", "environment_perception": "An urban arterial with two lanes per direction and a solid yellow centerline appears dry and well maintained, with moderate traffic queuing toward an intersection ahead. A white hatchback is stopped directly in front of the ego-vehicle in the ego lane for the flashing red light at the intersection, constraining the ego's pace. To the left, a silver microvan slightly ahead waits in the adjacent same-direction lane. Farther ahead in that lane, a small canvas-topped truck remains stationary, further blocking the view toward the junction. The oncoming lanes to the right are momentarily clear nearby. Overhead traffic signals and roadside railings and buildings frame the scene.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego-car, in the ego lane, because of the flashing red light ahead at the intersection. The ego-vehicle must yield to the stopped hatchback to avoid a collision and comply with the red signal."}
{"id": "train_08988", "split": "train", "clip_key": "2020-0228-150133_081242_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "081242"}, "frames": ["2020-0228-150133_081242_movie_t-3.jpg", "2020-0228-150133_081242_movie_t-2.jpg", "2020-0228-150133_081242_movie_t-1.jpg", "2020-0228-150133_081242_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction runs beside a low hedge median, the asphalt looks smooth, and traffic is light and steady. The ego vehicle proceeds in the left lane while oncoming lanes are separated across the hedge. A gray van ahead in the ego lane drives straight and gradually pulls away, informally setting the ego vehicle's pace. Farther ahead to the right, a car in the adjacent lane continues forward at a similar speed and remains outside the ego path. Sparse oncoming traffic moves independently on the far side of the median. An overhead gantry sign appears ahead without any visible indications, and no pedestrians, cyclists, or hazards are present.", "hazard_reasoning": "There is a gray van driving in the ego lane, away from the ego car. The driver should maintain a safe following distance behind the van in case it slows or stops unexpectedly."}
{"id": "train_08989", "split": "train", "clip_key": "titan_clip_1009_000282_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1009_000282_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1009_000282_movie_t-3_augB1.jpg", "titan_clip_1009_000282_movie_t-2_augB1.jpg", "titan_clip_1009_000282_movie_t-1_augB1.jpg", "titan_clip_1009_000282_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial side street with a single narrow lane and sidewalks, no median or centerline, has clean asphalt and very light vehicular traffic. A pedestrian in a white shirt carrying a backpack crosses the lane from right to left directly ahead of the ego vehicle, doing so where no crosswalk is marked. Farther ahead, another pedestrian walks along the middle of the lane away from the camera, occupying the path and potentially slowing the vehicle. Several pedestrians stand close to the curb on the right near storefront signboards while others wait along the left sidewalk, creating a tight corridor but remaining out of the lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, crossing the street in front of the ego car, from the right side to the left side, because there is no crosswalk. The driver should slow down to avoid collision with the pedestrian due to the lack of a designated crossing."}
{"id": "train_08990", "split": "train", "clip_key": "2020-0220-102630_036496_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "036496"}, "frames": ["2020-0220-102630_036496_movie_t-3.jpg", "2020-0220-102630_036496_movie_t-2.jpg", "2020-0220-102630_036496_movie_t-1.jpg", "2020-0220-102630_036496_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban multi-lane intersection with clear zebra crossings and smooth pavement is seen, and traffic is moderate as the ego vehicle waits at a signalized junction. A black minivan directly ahead in the ego lane turns left in front of the ego car, momentarily constraining its movement. On the left corner, several pedestrians and a couple of cyclists wait beside the crosswalk and appear ready to cross when permitted. Across the intersection, oncoming cars travel straight through from right to left without entering the ego lane. Overhead traffic lights and direction signs are visible.", "hazard_reasoning": "There is a black minivan turning left in front of the ego car in the ego lane. Follow the vehicle ahead to maintain a safe distance and adapt speed to avoid collision."}
{"id": "train_08991", "split": "train", "clip_key": "titan_clip_1146_000180_movie", "source": {"subset": "titan", "scenario": "clip_1146", "frame": "000180"}, "frames": ["titan_clip_1146_000180_movie_t-3.jpg", "titan_clip_1146_000180_movie_t-2.jpg", "titan_clip_1146_000180_movie_t-1.jpg", "titan_clip_1146_000180_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban side street with a single narrow mixed-traffic lane has worn asphalt and no median or centerline, and there are no moving vehicles so traffic is light. Ahead on the right side of the roadway, a tall pedestrian in a black T-shirt and black pants with a backpack walks away from the ego vehicle, occupying part of the travel space directly ahead. Slightly farther ahead on the same side, another pedestrian in light clothing also walks away near the curb, remaining in the lane ahead. A no-parking sign and a blue one-way arrow are posted on a pole to the left. Parked bicycles, cones, and shop fixtures along both curbs further narrow the roadway.", "hazard_reasoning": "The tall pedestrian in a black t-shirt and black pants, with a backpack, is walking on the right side of the road, away from the ego car. Because the pedestrian is close to the driving lane and could change direction, the driver should carefully manoeuvre around them to maintain safety."}
{"id": "train_08992", "split": "train", "clip_key": "2020-0204-150838_033274_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "033274"}, "frames": ["2020-0204-150838_033274_movie_t-3.jpg", "2020-0204-150838_033274_movie_t-2.jpg", "2020-0204-150838_033274_movie_t-1.jpg", "2020-0204-150838_033274_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with painted lane markings but no physical median, dry pavement, and heavy stop-and-go traffic. A white van is stopped directly ahead in the ego lane, holding the ego car in the queue. To the left, a black taxi slightly ahead in the adjacent same-direction lane creeps forward parallel to the ego vehicle, continuing straight. On the right, another white van in the next lane edges ahead and passes slowly, also proceeding straight and close to the ego lane. An overhead blue sign indicates travel straight ahead.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car. The van's abrupt stop poses a collision risk, so the driver should stop immediately to avoid a rear-end collision."}
{"id": "train_08993", "split": "train", "clip_key": "2020-0228-102841_035100_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "035100"}, "frames": ["2020-0228-102841_035100_movie_t-3.jpg", "2020-0228-102841_035100_movie_t-2.jpg", "2020-0228-102841_035100_movie_t-1.jpg", "2020-0228-102841_035100_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban divided road with two lanes in the ego direction runs straight on smooth asphalt, and traffic is moderate but bunches into a slow queue ahead. A dark minivan directly ahead in the ego lane is stopped because of the congestion and holds the ego vehicle. Several cars farther ahead in the same lane crawl toward the distant intersection, keeping tight gaps that limit progress. Vehicles in the adjacent right lane move slowly in the same direction without merging. Oncoming cars travel steadily on the opposite carriageway to the right, separated by a barrier and not interacting with the ego lane. A roadside sign on the right shows a zone 20 speed limit.", "hazard_reasoning": "There is a gray hatchback stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. You should stop to maintain a safe distance and avoid colliding with the halted vehicle."}
{"id": "train_08994", "split": "train", "clip_key": "2020-0210-155354_002678_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "002678"}, "frames": ["2020-0210-155354_002678_movie_t-3.jpg", "2020-0210-155354_002678_movie_t-2.jpg", "2020-0210-155354_002678_movie_t-1.jpg", "2020-0210-155354_002678_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-ending the stopped hatchback at red light.", "environment_perception": "An urban two-way street with one lane in each direction has no median and smooth dry pavement; traffic is moderate and bunches at a signalized intersection. A white hatchback ahead in the ego lane is stopped at the stop line because the traffic light is red, holding the ego vehicle. Several pedestrians on both sidewalks step into and cross the zebra crossing ahead, moving across the ego lane while the vehicles wait. In the opposite lane, a black van and other oncoming cars approach the junction and slow to queue at their red. Shops, railings, and narrow sidewalks line the roadway, with no visible obstacles in the lane.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because the light is red. The driver should stop to avoid colliding with the stationary white hatchback at the red light."}
{"id": "train_08995", "split": "train", "clip_key": "titan_clip_1250_000360_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1250_000360_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1250_000360_movie_t-3_augB1.jpg", "titan_clip_1250_000360_movie_t-2_augB1.jpg", "titan_clip_1250_000360_movie_t-1_augB1.jpg", "titan_clip_1250_000360_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow two-way urban side street with no centerline and worn, patchy asphalt runs between shopfronts; several trucks parked along the left narrow the roadway and motor traffic is light. Ahead in the middle of the road, a pedestrian in a white dress walks toward the ego vehicle, using the lane to pass the parked vehicle. At the right edge by a shuttered storefront, a man with a backpack stands near the curb, close to the travel path. Farther ahead near the trucks, a few pedestrians, including one carrying a white umbrella, move along and partly across the lane. A delivery truck on the left encroaches into the roadway and forms a significant obstacle.", "hazard_reasoning": "There is a pedestrian wearing a white dress and walking towards the ego car, in the middle of the road, because of the parked vehicle. The driver should carefully manoeuvre to avoid a collision with the pedestrian."}
{"id": "train_08996", "split": "train", "clip_key": "titan_clip_868_000240_movie", "source": {"subset": "titan", "scenario": "clip_868", "frame": "000240"}, "frames": ["titan_clip_868_000240_movie_t-3.jpg", "titan_clip_868_000240_movie_t-2.jpg", "titan_clip_868_000240_movie_t-1.jpg", "titan_clip_868_000240_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be cautious of pedestrian on road", "environment_perception": "A narrow urban commercial street with no center divider and worn but intact pavement carries light, slow traffic. A small white van ahead in the ego lane proceeds cautiously near the shopfronts, constraining the ego vehicle's pace. Several pedestrians cluster along the right edge ahead, some stepping slightly into the roadway as they pass storefronts and may enter the ego path. A pedestrian wearing a blue shirt and black pants walks on the right side toward the ego vehicle because there is no sidewalk, staying close to the lane edge. Farther ahead, another pedestrian crosses mid-block near the van and briefly occupies space in front of it.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, walking on the right side of the road, toward the ego car, because there is no sidewalk. The driver should be cautious because the pedestrian is on the roadway and may enter the vehicle's path."}
{"id": "train_08997", "split": "train", "clip_key": "titan_clip_178_000018_movie", "source": {"subset": "titan", "scenario": "clip_178", "frame": "000018"}, "frames": ["titan_clip_178_000018_movie_t-3.jpg", "titan_clip_178_000018_movie_t-2.jpg", "titan_clip_178_000018_movie_t-1.jpg", "titan_clip_178_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down and watch for pedestrian", "environment_perception": "A narrow urban two-way street runs between mid-rise buildings, with smooth pavement, no median, and light traffic; the ego-vehicle proceeds in the left lane and no oncoming vehicles are close. Several vehicles are parked along the left curb ahead, narrowing the usable lane and partly blocking the pedestrian area. A pedestrian in a white shirt and black pants walks in the middle of the ego lane ahead, moving away from the ego car because the pedestrian lane is obstructed by a parked vehicle, and he may constrain the pace. Another person stands on the right sidewalk by a building entrance, stationary and not entering the road. A shared-lane bicycle marking is visible on the roadway.", "hazard_reasoning": "There's a pedestrian, wearing a white shirt and black pants, walking in the middle of the road in the ego lane, away from the ego car, because of the parked vehicle in the pedestrian lane. The pedestrian's path is obstructed by parked cars, forcing them into the driving lane, so the driver should slow down to avoid a collision."}
{"id": "train_08998", "split": "train", "clip_key": "2020-0228-150133_079991_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "079991"}, "frames": ["2020-0228-150133_079991_movie_t-3.jpg", "2020-0228-150133_079991_movie_t-2.jpg", "2020-0228-150133_079991_movie_t-1.jpg", "2020-0228-150133_079991_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way arterial with two same-direction lanes and a painted center stretches toward an intersection; the pavement looks smooth and traffic is moderate. On the right, oncoming traffic in the far lanes flows steadily without impeding the ego vehicle. A small flatbed truck travels ahead in the ego left lane at modest speed, constraining the ego car's pace. A white hatchback runs ahead in the adjacent right lane, continuing straight and gradually pulling away without merging. Far ahead near the intersection, a gray van slows, causing slight bunching in its lane but remaining away from the ego car.", "hazard_reasoning": "There's a gray van slowing near the intersection, away from the ego car. The van's reduced speed could lead to a rear-end collision if the driver does not decrease speed accordingly."}
{"id": "train_08999", "split": "train", "clip_key": "titan_clip_1145_000588_movie", "source": {"subset": "titan", "scenario": "clip_1145", "frame": "000588"}, "frames": ["titan_clip_1145_000588_movie_t-3.jpg", "titan_clip_1145_000588_movie_t-2.jpg", "titan_clip_1145_000588_movie_t-1.jpg", "titan_clip_1145_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian on roadway", "environment_perception": "An urban narrow two-way street with one lane each direction and no median is shown, the asphalt slightly worn and vehicle traffic light with no moving cars ahead as the ego-vehicle proceeds in the left lane. Ahead along the left edge, a pedestrian in a white T-shirt, black pants, and a backpack walks away from the car within the roadway where there is no sidewalk, constraining pace. On the left by a convenience-store frontage, another pedestrian walks near the curb toward the ego but keeps to the side. On the near right, a pedestrian at the curb stands just off the lane and does not enter. A parked bicycle and stacked goods at the storefront protrude slightly into the left margin and narrow the passage.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt, black pants, and carrying a backpack, walking on the left side of the road, away from the ego car, because there is no sidewalk. The pedestrian's proximity to the travel lane means they could step into the vehicle's path unexpectedly, so the driver should be aware in case it might affect future maneuvers."}
{"id": "train_09000", "split": "train", "clip_key": "2020-0129-105040_011312_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "011312"}, "frames": ["2020-0129-105040_011312_movie_t-3.jpg", "2020-0129-105040_011312_movie_t-2.jpg", "2020-0129-105040_011312_movie_t-1.jpg", "2020-0129-105040_011312_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane circular junction with a large central island lies ahead, the pavement looking wet and traffic light. The ego vehicle approaches in the left lane. A white van ahead in the ego lane slows while following the curve around the island, constraining the ego car's pace. To the right, a white box truck turns into the circle and tracks leftward around the island, moving across the ego vehicle's intended path. On the near left, a dark car lingers by the curb at the corner, waiting to enter and posing little immediate influence. A fenced work area occupies the island in the middle.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car. The van's deceleration could lead to a collision if the driver does not slow down and increase following distance."}
{"id": "train_09001", "split": "train", "clip_key": "2020-0214-102601_013560_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "013560"}, "frames": ["2020-0214-102601_013560_movie_t-3.jpg", "2020-0214-102601_013560_movie_t-2.jpg", "2020-0214-102601_013560_movie_t-1.jpg", "2020-0214-102601_013560_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with three lanes in the ego direction runs between tall buildings; the asphalt is dry and traffic flows at a moderate, steady pace. A white van drives directly ahead in the ego lane as the overhead signal shows green, setting the ego car's pace while continuing straight. A small van ahead in the left adjacent lane proceeds straight at similar speed, remaining slightly offset to the ego vehicle. Farther ahead to the right, several cars travel in the rightmost lane and along a separated side lane, advancing steadily and staying in their lanes.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane, because of the green traffic light. The green signal may change soon and the lead vehicle could slow unexpectedly, so the driver should follow it at a safe distance."}
{"id": "train_09002", "split": "train", "clip_key": "2020-0228-102841_039278_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "039278"}, "frames": ["2020-0228-102841_039278_movie_t-3.jpg", "2020-0228-102841_039278_movie_t-2.jpg", "2020-0228-102841_039278_movie_t-1.jpg", "2020-0228-102841_039278_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs between tall buildings with smooth dry pavement and heavy traffic that is halted at a signal. A white hatchback directly ahead is stopped in the ego lane because the overhead light is red, holding the ego vehicle. On the far left by the curb, a motor scooter filters forward alongside the queue and edges past the ego car's line. In the adjacent left and right lanes, several white vans are stopped slightly ahead in parallel, maintaining the standstill. The traffic signal ahead shows red.", "hazard_reasoning": "There is white hatchback stopped in the ego lane, in front of the ego car, because of red traffic light. You should stop promptly to avoid colliding with the halted vehicle at the red signal."}
{"id": "train_09003", "split": "train", "clip_key": "2020-0226-140503_037806_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "037806"}, "frames": ["2020-0226-140503_037806_movie_t-3.jpg", "2020-0226-140503_037806_movie_t-2.jpg", "2020-0226-140503_037806_movie_t-1.jpg", "2020-0226-140503_037806_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial with two lanes in the ego vehicle's direction runs between tall buildings, bordered by a right-side guardrail; the pavement appears damp and traffic is queued. A white sedan is stopped directly ahead in the ego lane because the signal ahead shows red, holding the lane. In the adjacent left lane a black van waits slightly farther ahead, constraining progress toward the junction. On the left sidewalk a cyclist rides forward near the curb, remaining parallel to traffic and outside the roadway. The overhead traffic light is red at the intersection, and a circular speed-limit sign indicates 50.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop to avoid rear-ending the stopped vehicle and comply with the red signal."}
{"id": "train_09004", "split": "train", "clip_key": "2020-0225-145150_030539_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "030539"}, "frames": ["2020-0225-145150_030539_movie_t-3.jpg", "2020-0225-145150_030539_movie_t-2.jpg", "2020-0225-145150_030539_movie_t-1.jpg", "2020-0225-145150_030539_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction and a painted chevron median looks smooth and dry, and traffic is light. A blue truck directly ahead in the ego lane accelerates away from the ego car, increasing the gap while continuing straight. The adjacent same-direction lane and the oncoming lanes to the right remain mostly clear, with no other road users influencing the ego vehicle.", "hazard_reasoning": "There is a blue truck accelerating in front of the ego car, in the ego lane, away from the ego car. It is accelerating, suggesting the traffic signal ahead has changed to green, so the driver should start moving to follow safely under this situation."}
{"id": "train_09005", "split": "train", "clip_key": "titan_clip_581_000288_movie", "source": {"subset": "titan", "scenario": "clip_581", "frame": "000288"}, "frames": ["titan_clip_581_000288_movie_t-3.jpg", "titan_clip_581_000288_movie_t-2.jpg", "titan_clip_581_000288_movie_t-1.jpg", "titan_clip_581_000288_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around pedestrians", "environment_perception": "An urban two-way street with one narrow lane per direction, no median, and worn asphalt is shown, and traffic stays light. A white truck is stationary at the left curb close to the ego vehicle, reducing lateral space as it is passed. Three pedestrians wearing white shirts and black shorts walk toward the ego along the left side of the road and may step into the lane. Far ahead in the same direction, a small van stands near the right edge beside building scaffolding, creating a slight pinch point. Blue cones line the left shoulder.", "hazard_reasoning": "There are three pedestrians wearing white shirts and black shorts, walking on the left side of the road, towards the ego car. The driver should carefully manoeuvre around them to avoid a collision since they are directly in the vehicle's path."}
{"id": "train_09006", "split": "train", "clip_key": "2020-0131-135401_040957_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "040957"}, "frames": ["2020-0131-135401_040957_movie_t-3.jpg", "2020-0131-135401_040957_movie_t-2.jpg", "2020-0131-135401_040957_movie_t-1.jpg", "2020-0131-135401_040957_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with shops lines both sides; there are two lanes in the ego direction and one oncoming lane, the pavement is smooth, and traffic is queued at a signal. A white hatchback is stopped directly ahead in the ego lane because the light is red, constraining the ego vehicle. Slightly ahead to the left, a small red van in the adjacent same-direction lane is also stopped at the line. On the far right, oncoming cars move through the intersection in their lane without conflicting. An overhead traffic signal ahead displays red for the ego approach.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car in the ego lane, because the light is red. The white hatchback has stopped at the red light, so the driver should stop to avoid a rear-end collision."}
{"id": "train_09007", "split": "train", "clip_key": "titan_clip_31_000204_movie", "source": {"subset": "titan", "scenario": "clip_31", "frame": "000204"}, "frames": ["titan_clip_31_000204_movie_t-3.jpg", "titan_clip_31_000204_movie_t-2.jpg", "titan_clip_31_000204_movie_t-1.jpg", "titan_clip_31_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way street with a single lane each direction and no median has smooth pavement and light traffic. Ahead on the left, a small covered truck is stopped at the curb and partly intrudes into the ego lane; a pedestrian wearing black pants and a shirt stands beside it loading the vehicle close to the roadway. Farther ahead in the same direction, a small green vehicle moves away slowly, setting the pace. On the right sidewalk, several pedestrians walk toward the camera while staying on the footpath. A parked bicycle and delivery carts line the left curb, slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian wearing black pants and a shirt, standing on the left side of the road, because they are loading their vehicle. The driver must manoeuvre carefully around this pedestrian to avoid collision and ensure safe passage."}
{"id": "train_09008", "split": "train", "clip_key": "2020-0213-143552_060022_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "060022"}, "frames": ["2020-0213-143552_060022_movie_t-3.jpg", "2020-0213-143552_060022_movie_t-2.jpg", "2020-0213-143552_060022_movie_t-1.jpg", "2020-0213-143552_060022_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban street with two same-direction lanes and a planted median on the right has smooth pavement, and traffic is moderate but bunching near an intersection ahead. Directly ahead in the ego lane, a white box truck slows because of congestion up the road, setting the ego car's pace. To the left, a white minivan in the curb lane runs slightly ahead at a similar slow speed while continuing straight. Farther ahead, a short queue forms near the junction. Overhead lane signs show the left lane goes straight while the right lane is right-turn-only, with chevrons guiding the turn lane.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe following distance and avoid abrupt braking."}
{"id": "train_09009", "split": "train", "clip_key": "titan_clip_147_000888_movie", "source": {"subset": "titan", "scenario": "clip_147", "frame": "000888"}, "frames": ["titan_clip_147_000888_movie_t-3.jpg", "titan_clip_147_000888_movie_t-2.jpg", "titan_clip_147_000888_movie_t-1.jpg", "titan_clip_147_000888_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre around the parked sedan", "environment_perception": "An urban narrow two-way street without a median runs between mid-rise shops and apartments; the asphalt is smooth but the corridor is tight and traffic is light. A black sedan is parked on the right side of the road, jutting slightly into the travel lane and constricting the ego vehicle's path. Far ahead in the same direction, a white box truck proceeds slowly near the center, setting the pace for following traffic. Two pedestrians are ahead near the centerline, one walking in the lane and another by the right curb beside the parked sedan, and they may enter the ego lane.", "hazard_reasoning": "There is a black sedan parked on the right side of the road. This parked vehicle partially obstructs the driving lane and requires careful manoeuvring to avoid collision."}
{"id": "train_09010", "split": "train", "clip_key": "titan_clip_1048_000090_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1048_000090_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1048_000090_movie_t-3_augB1.jpg", "titan_clip_1048_000090_movie_t-2_augB1.jpg", "titan_clip_1048_000090_movie_t-1_augB1.jpg", "titan_clip_1048_000090_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with a single shared lane and smooth, slightly wet pavement stretches ahead, and traffic is light. Parked vans line the left while a metal railing with planters borders the right, narrowing the usable roadway. A pedestrian wearing a black shirt walks ahead in the middle of the road away from the ego vehicle, continuing straight and occupying the ego path, which constrains the car's pace. No other moving vehicles are visible nearby. A roadside sign on the right shows a 30 speed limit with a Zone 30 pedestrian symbol.", "hazard_reasoning": "There is a pedestrian wearing a black shirt, walking in the middle of the road, away from the ego car. Since the pedestrian is directly ahead on the road, the driver should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_09011", "split": "train", "clip_key": "titan_clip_34_000420_movie", "source": {"subset": "titan", "scenario": "clip_34", "frame": "000420"}, "frames": ["titan_clip_34_000420_movie_t-3.jpg", "titan_clip_34_000420_movie_t-2.jpg", "titan_clip_34_000420_movie_t-1.jpg", "titan_clip_34_000420_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian in road", "environment_perception": "An urban alley-like street with patterned stone pavement has a single narrow shared lane and no median, with light, slow traffic. A silver van ahead near the center approaches slowly in the oncoming direction, constrained by the tight corridor. A pedestrian wearing a white shirt and carrying a shopping bag walks in the middle of the road toward the ego vehicle because a parked car narrows the space, making the person relevant to the ego path. Several other pedestrians on the left ahead walk close to the curb along the storefronts, staying near the travel lane but not crossing. A parked car on the right side further pinches the roadway.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, holding a shopping bag, walking in the middle of the road towards the ego car, because of the parked vehicle. The driver should be aware of this pedestrian in the road to avoid a potential collision."}
{"id": "train_09012", "split": "train", "clip_key": "2020-0205-103411_026194_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "026194"}, "frames": ["2020-0205-103411_026194_movie_t-3.jpg", "2020-0205-103411_026194_movie_t-2.jpg", "2020-0205-103411_026194_movie_t-1.jpg", "2020-0205-103411_026194_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban road curves left past tall buildings, with a single through lane in the ego direction and a zebra crossing in the foreground; guardrails and a narrow median separate a side access road on the right, the pavement is dry and smooth, and traffic is light. A white SUV waits on the right at the side road, edging forward to merge into the main roadway and potentially enter the ego path. Far ahead in the same direction, a small car continues through the left curve without affecting the ego vehicle. An overhead traffic signal is visible but its aspect is not clear.", "hazard_reasoning": "No caption provided. Since no immediate hazards are present, maintain a safe and consistent speed."}
{"id": "train_09013", "split": "train", "clip_key": "titan_clip_755_000024_movie", "source": {"subset": "titan", "scenario": "clip_755", "frame": "000024"}, "frames": ["titan_clip_755_000024_movie_t-3.jpg", "titan_clip_755_000024_movie_t-2.jpg", "titan_clip_755_000024_movie_t-1.jpg", "titan_clip_755_000024_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Yield to cyclist ahead", "environment_perception": "An urban narrow street with a single lane and no median, pavement in good condition; cones and construction on the left create a temporary chicane, and overall traffic is light. Ahead in the center of the lane, a cyclist wearing a green shirt rides away from the ego vehicle in the middle of the road, occupying the path and constraining the pace. Farther ahead near the right curb, another cyclist proceeds in the same direction along the edge but stays clear of the center. On the left shoulder a black truck and a flatbed are stopped within a coned work zone, narrowing the usable lane and forming a pinch point. No signals or unusual signs are prominent, and no oncoming traffic appears.", "hazard_reasoning": "There is a cyclist wearing a green shirt and cycling away from the ego car, in the middle of the road. The cyclist's central position makes their trajectory unpredictable, so yielding prevents a potential collision."}
{"id": "train_09014", "split": "train", "clip_key": "2020-0226-140503_065934_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "065934"}, "frames": ["2020-0226-140503_065934_movie_t-3.jpg", "2020-0226-140503_065934_movie_t-2.jpg", "2020-0226-140503_065934_movie_t-1.jpg", "2020-0226-140503_065934_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection with a landscaped median and red-textured approach is seen, the pavement is smooth and cross traffic flows while the ego vehicle waits at the stop line. On the left curb at the crosswalk, three pedestrians, one carrying a white bag and wearing a mask and all in black pants, stand waiting to cross in front of the ego car and may enter the ego lane when permitted. Ahead in the junction, a white flatbed truck moves left to right across the ego path, showing that the cross street has the right-of-way and occupying the intersection. From the near right, a gray van travels across to the left in front of the ego vehicle with the same cross flow. The traffic light facing the ego lane shows red.", "hazard_reasoning": "There are three pedestrians, one carrying a white bag and wearing a mask, all three wearing black pants, waiting on the left side of the street at a crosswalk, to cross the road in front of the ego-car. The driver should stop because the pedestrians may enter the crosswalk when the signal changes and must be given right of way."}
{"id": "train_09015", "split": "train", "clip_key": "2020-0204-103442_085277_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "085277"}, "frames": ["2020-0204-103442_085277_movie_t-3.jpg", "2020-0204-103442_085277_movie_t-2.jpg", "2020-0204-103442_085277_movie_t-1.jpg", "2020-0204-103442_085277_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A suburban two-way road with one lane each direction curves gently, separated by a painted hatched median; the pavement looks smooth and traffic is moderate. A gray van drives ahead in the ego lane at a steady pace, effectively setting our speed. Farther ahead in the same direction, a white box truck proceeds along the lane beyond the van. In the opposite lane to the right, a small cab-over truck approaches and passes by without crossing the buffer. A large 40 marking on the road indicates the speed limit, and an overhead signal gantry is visible. Temporary fencing and panels on the right suggest a roadside work area that remains off the carriageway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09016", "split": "train", "clip_key": "2020-0205-152530_025764_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "025764"}, "frames": ["2020-0205-152530_025764_movie_t-3.jpg", "2020-0205-152530_025764_movie_t-2.jpg", "2020-0205-152530_025764_movie_t-1.jpg", "2020-0205-152530_025764_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately.", "environment_perception": "An urban multi-lane road runs under an elevated structure, with smooth dry pavement and a guardrail on the right; traffic is heavy and queued. A gray van directly ahead in the ego lane is stopped because congestion blocks the lane. A small hatchback farther ahead slightly to the left is also halted in the same queue, constraining the pace there. At the far left near a side-street mouth, a black sedan edges toward the roadway and waits to merge, which may enter the left lane near the ego vehicle. An overhead gantry sign shows lane-direction arrows.", "hazard_reasoning": "There is a gray van stopped in front of the ego car, because of traffic congestion ahead. The driver should stop immediately to avoid rear-ending the halted vehicle."}
{"id": "train_09017", "split": "train", "clip_key": "titan_clip_1020_000324_movie", "source": {"subset": "titan", "scenario": "clip_1020", "frame": "000324"}, "frames": ["titan_clip_1020_000324_movie_t-3.jpg", "titan_clip_1020_000324_movie_t-2.jpg", "titan_clip_1020_000324_movie_t-1.jpg", "titan_clip_1020_000324_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Yield to child", "environment_perception": "An urban side street by shops and a station entrance leads to an underpass on a narrow undivided road with dry, smooth pavement and no moving vehicle traffic as the ego car pauses at a pedestrian crossing. Ahead, a person with a backpack in the middle of the roadway walks leftward across the ego path, determining when the car can proceed. On the left side, a person wearing a white shirt walks away from the vehicle along the curb. No traffic signals are clearly visible and no other hazards or vehicles appear.", "hazard_reasoning": "There is a child wearing a white shirt and gray pants, and walking away from the ego car, on the left side of the road. The child may suddenly change direction or step into the vehicle's path, so the driver should be prepared to yield to avoid a collision."}
{"id": "train_09018", "split": "train", "clip_key": "titan_clip_685_000198_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_685_000198_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_685_000198_movie_t-3_augB1.jpg", "titan_clip_685_000198_movie_t-2_augB1.jpg", "titan_clip_685_000198_movie_t-1_augB1.jpg", "titan_clip_685_000198_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shopping street with a narrow two-way road and no median is shown; the asphalt is smooth, the ego vehicle proceeds in the left lane, and the area functions as a shared zone with very light vehicle traffic and many pedestrians. A man wearing a blue shirt and blue shorts with a backpack on the right walks toward the vehicle while looking at his phone, moving partly in the lane and possibly entering its path. Several pedestrians ahead in the center of the roadway stroll and cross between the shops, occupying the lane and constraining the vehicle's pace. On the near right edge, another pedestrian walks along the roadway close to the vehicle's path.", "hazard_reasoning": "There is a man wearing a blue shirt and blue shorts, carrying a backpack, looking into a phone, and walking towards the ego car, on the right side of the road. The pedestrian's inattention and trajectory toward the vehicle create a risk of collision, so the driver should manoeuvre safely to avoid him."}
{"id": "train_09019", "split": "train", "clip_key": "titan_clip_194_000318_movie", "source": {"subset": "titan", "scenario": "clip_194", "frame": "000318"}, "frames": ["titan_clip_194_000318_movie_t-3.jpg", "titan_clip_194_000318_movie_t-2.jpg", "titan_clip_194_000318_movie_t-1.jpg", "titan_clip_194_000318_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down for pedestrian crossing ahead", "environment_perception": "A narrow urban street between tall buildings hosts a single lane with no divider, smooth yellow paving, and no visible motor traffic. Ahead in the middle of the lane, a pedestrian wearing a white shirt and black pants crosses toward the right sidewalk, directly across the vehicle's path and constraining pace. Near the left foreground curb, a person with a white umbrella steps off the sidewalk and begins to cross diagonally into the lane, potentially entering the path. Farther ahead on the right sidewalk, several pedestrians walk under umbrellas parallel to the road, remaining outside the lane. Short bollards line the left edge, and no salient signals or posted speeds are visible.", "hazard_reasoning": "A pedestrian wearing a white shirt and black pants is crossing in the middle of the lane to the right side. The driver should slow down to yield to the pedestrian crossing the lane and prevent a collision."}
{"id": "train_09020", "split": "train", "clip_key": "2020-0131-135401_004231_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "004231"}, "frames": ["2020-0131-135401_004231_movie_t-3.jpg", "2020-0131-135401_004231_movie_t-2.jpg", "2020-0131-135401_004231_movie_t-1.jpg", "2020-0131-135401_004231_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban two-lane road with no median and smooth dry pavement is shown, with light traffic as the ego car proceeds in the left lane under strong sun glare. A gray box truck is stopped ahead in the ego lane, blocking the path and constraining the ego's pace. On the left sidewalk near the curb, a pedestrian walks forward parallel to traffic, staying clear of the roadway. Farther ahead on the left sidewalk, a small group of pedestrians walks toward the camera along the curb, remaining on the sidewalk. An overhead circular sign displays 40, and no signals are visible on this narrow street.", "hazard_reasoning": "There is a gray truck stopped in front of the ego car. The stopped vehicle obstructs the lane and reduces visibility ahead, creating a high risk of rear-end collision, so the driver should stop immediately to avoid impact."}
{"id": "train_09021", "split": "train", "clip_key": "2020-0203-114632_058912_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "058912"}, "frames": ["2020-0203-114632_058912_movie_t-3.jpg", "2020-0203-114632_058912_movie_t-2.jpg", "2020-0203-114632_058912_movie_t-1.jpg", "2020-0203-114632_058912_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial approaches a broad signalized intersection with three marked lanes in the ego direction and no median; the asphalt looks smooth and traffic is light. Buildings line both sides under clear weather. A city bus stands at the left curb just before the junction, stationary and potentially preparing to merge into the left lane. On the cross street to the right, two white cars wait at their stop line, ready to turn or proceed across the ego path when permitted. Several pedestrians gather on the right-side corner by the zebra crossing, waiting without stepping into the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09022", "split": "train", "clip_key": "2020-0204-103442_072051_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "072051"}, "frames": ["2020-0204-103442_072051_movie_t-3.jpg", "2020-0204-103442_072051_movie_t-2.jpg", "2020-0204-103442_072051_movie_t-1.jpg", "2020-0204-103442_072051_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "An urban two-way road with one lane each way and no median has smooth asphalt and a gentle right bend ahead; traffic is light. A black car directly ahead in the ego lane proceeds straight at a modest pace, effectively setting our speed. A white truck is parked along the left curb next to the ego lane because it is being unloaded, narrowing the space near the crosswalk. Farther ahead, a larger cargo truck traveling in the same direction continues away toward the bend.", "hazard_reasoning": "There's a white truck parked on the left side of the road next to the ego lane, because the truck is being unloaded. The truck encroaches on the driving lane and reduces the driver's view of the crossing, so the driver should manoeuvre carefully around the parked truck."}
{"id": "train_09023", "split": "train", "clip_key": "titan_clip_951_000018_movie", "source": {"subset": "titan", "scenario": "clip_951", "frame": "000018"}, "frames": ["titan_clip_951_000018_movie_t-3.jpg", "titan_clip_951_000018_movie_t-2.jpg", "titan_clip_951_000018_movie_t-1.jpg", "titan_clip_951_000018_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of stopped truck", "environment_perception": "An urban two-way street with a single lane in each direction and no median approaches an unsignalized intersection; the pavement is dry and smooth, and traffic is light. A white van ahead in the ego lane moves straight through the intersection at low speed, briefly constraining the ego vehicle. A gray truck is stopped on the left side of the intersection coming from the left lane of the cross street and remains stationary. On the right, two pedestrians at the curb step onto the zebra crossing toward the left and may enter the ego lane.", "hazard_reasoning": "A gray truck is stopped on the left side of the intersection coming from the left lane. You should be cautious because the stopped truck may block your view of oncoming traffic when entering the intersection."}
{"id": "train_09024", "split": "train", "clip_key": "2020-0228-102841_085574_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "085574"}, "frames": ["2020-0228-102841_085574_movie_t-3.jpg", "2020-0228-102841_085574_movie_t-2.jpg", "2020-0228-102841_085574_movie_t-1.jpg", "2020-0228-102841_085574_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with two same-direction lanes and no physical median approaches an intersection; the pavement is smooth and overall traffic is light. A white sedan is stopped directly ahead in the ego lane at the stop line, holding the ego vehicle in place. Farther ahead in the same lane, a three-wheeled scooter continues straight through the intersection and opens its gap, clearing the path ahead. To the right, a white hatchback in the adjacent lane waits alongside at the line and will move off in parallel. On the left shoulder, construction cones and a work truck create a roadside work zone that narrows the edge.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car. The vehicle ahead is stationary in the same lane, so the driver must stop to avoid a collision."}
{"id": "train_09025", "split": "train", "clip_key": "titan_clip_587_000522_movie", "source": {"subset": "titan", "scenario": "clip_587", "frame": "000522"}, "frames": ["titan_clip_587_000522_movie_t-3.jpg", "titan_clip_587_000522_movie_t-2.jpg", "titan_clip_587_000522_movie_t-1.jpg", "titan_clip_587_000522_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street lined by mid-rise buildings has smooth pavement, no centerline, and light, slow traffic. In the middle of the lane ahead, a pedestrian wearing a gray shirt and beige pants walks toward the left side of the road, moving across the ego path. A large delivery truck passes close along the left side of the ego vehicle, reducing lateral clearance. Farther ahead by the left curb, a small truck is stopped and slightly narrows the usable lane. On the right, a silver car sits stationary in a paid parking bay. A parking sign and price board are visible on the right, and a cardboard box on a cart stands near the curb.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and beige pants in middle of the road, walking toward the left side of the road. The pedestrian's position in the lane poses a collision risk, so the driver should slow down under this situation."}
{"id": "train_09026", "split": "train", "clip_key": "2020-0212-102546_047057_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "047057"}, "frames": ["2020-0212-102546_047057_movie_t-3.jpg", "2020-0212-102546_047057_movie_t-2.jpg", "2020-0212-102546_047057_movie_t-1.jpg", "2020-0212-102546_047057_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be aware of lane-changing vehicle", "environment_perception": "An urban scene under an elevated expressway shows a two-lane road carrying traffic in the ego direction, bordered by a curb and fence on the right; the pavement is smooth and traffic flows at a moderate, steady pace. A white sedan ahead in the ego lane moves left into the adjacent lane, merging in front of others. A silver hatchback travels in the left lane alongside the ego car and continues ahead, limiting space for lane changes. Farther ahead in the left lane, a dark truck proceeds steadily and becomes the lead vehicle after the merge. An overhead blue guide sign lists destinations with 300 m to a junction, and parked vehicles are visible behind the right-side fence.", "hazard_reasoning": "There is a white sedan in the ego lane in front of the ego car, changing to the left lane. Drivers should be aware because the sedan's lane change may reduce the safety gap and require adjustment of speed or steering to maintain a safe following distance."}
{"id": "train_09027", "split": "train", "clip_key": "2020-0226-101332_039593_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "039593"}, "frames": ["2020-0226-101332_039593_movie_t-3.jpg", "2020-0226-101332_039593_movie_t-2.jpg", "2020-0226-101332_039593_movie_t-1.jpg", "2020-0226-101332_039593_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear collision.", "environment_perception": "A busy urban multi-lane divided road runs between tall office buildings, with a metal-railed median on the right and dry, smooth pavement; traffic is heavy and comes to a stop at an intersection. A black sedan directly ahead in the ego lane is stopped because the signal ahead shows red, holding the ego vehicle. In the adjacent left lane, several white vans and small cars queue alongside, inching forward intermittently and limiting space to change lanes. Across the median to the right, oncoming vehicles move slowly along the opposite carriageway.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car in the ego lane, because of a red traffic light ahead. The black sedan is halted due to the red light, posing a risk of rear-end collision if the ego-vehicle does not stop."}
{"id": "train_09028", "split": "train", "clip_key": "2020-0214-102601_008733_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "008733"}, "frames": ["2020-0214-102601_008733_movie_t-3.jpg", "2020-0214-102601_008733_movie_t-2.jpg", "2020-0214-102601_008733_movie_t-1.jpg", "2020-0214-102601_008733_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of slowing hatchback ahead", "environment_perception": "An urban two-way road with one lane in each direction, no physical median, smooth pavement, and moderate traffic. A gray hatchback directly ahead in the ego lane slows and shifts right as it maneuvers around a white work van stopped at the left curb, narrowing the lane. An oncoming silver van proceeds in the opposing lane near the maneuver, limiting lateral space for the pass. A cyclist rides away along the left sidewalk beside the parked van behind a railing.", "hazard_reasoning": "The blue hatchback is slowing in front of the ego car in the ego lane because it is maneuvering around the parked van. The driver should be aware of the slowing hatchback ahead and maintain a safe following distance."}
{"id": "train_09029", "split": "train", "clip_key": "titan_clip_13_000204_movie", "source": {"subset": "titan", "scenario": "clip_13", "frame": "000204"}, "frames": ["titan_clip_13_000204_movie_t-3.jpg", "titan_clip_13_000204_movie_t-2.jpg", "titan_clip_13_000204_movie_t-1.jpg", "titan_clip_13_000204_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban commercial street with a single marked lane and no median stretches ahead; the brick-paved surface is clean and dry, and traffic is light with no nearby moving vehicles. Ahead on the left within the ego lane, a tall pedestrian in a blue shirt and black pants pushes a blue garbage bin away from the car, occupying the lane and constraining the ego vehicle's pace. Farther ahead on the right curb, a white box truck is stopped beside orange cones, narrowing the passage along the right edge. Additional pedestrians walk along the sidewalks ahead without entering the roadway.", "hazard_reasoning": "There is a tall, male pedestrian, wearing a blue shirt and black pants, pushing a blue garbage bin, walking on the left side of the road, in the ego lane, away from the ego-car. He occupies the driving lane and could be in the vehicle's path, so the driver should manoeuvre carefully around him."}
{"id": "train_09030", "split": "train", "clip_key": "titan_clip_607_000486_movie", "source": {"subset": "titan", "scenario": "clip_607", "frame": "000486"}, "frames": ["titan_clip_607_000486_movie_t-3.jpg", "titan_clip_607_000486_movie_t-2.jpg", "titan_clip_607_000486_movie_t-1.jpg", "titan_clip_607_000486_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban two-way residential street with worn asphalt has no center line or median, and traffic appears light with no moving vehicles nearby. Parked scooters and small bikes line the right curb, slightly narrowing the lane. On the right side ahead, a pedestrian in a green shirt stands at the curb beside a dolly, close to the roadway and near the edge of the ego lane, and could enter the path. Far ahead at the end of the block, a white car is stopped near the intersection, not moving and not yet affecting the approach. No salient traffic signals are visible, and there are no immediate obstacles in the travel lane beyond the encroaching parked scooters.", "hazard_reasoning": "There is a pedestrian with a dolly and wearing a green shirt, standing on the right side of the road. The driver should manoeuvre carefully around the pedestrian with a dolly to avoid collision."}
{"id": "train_09031", "split": "train", "clip_key": "titan_clip_838_000204_movie", "source": {"subset": "titan", "scenario": "clip_838", "frame": "000204"}, "frames": ["titan_clip_838_000204_movie_t-3.jpg", "titan_clip_838_000204_movie_t-2.jpg", "titan_clip_838_000204_movie_t-1.jpg", "titan_clip_838_000204_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Yield to the cyclist ahead", "environment_perception": "An urban commercial street with a single narrow shared lane is paved with bricks and lacks a median; vehicle traffic is very light while pedestrian activity is steady. Several pedestrians ahead cross the ego lane from both sides and also walk along the center, moving slowly and intermittently entering the path, which constrains the ego vehicle's pace. On the right ahead, a small delivery truck is stopped at the curb with its rear open, protruding slightly into the lane and narrowing the passage. No man in brown trousers and a black shirt cycling a bicycle is visible in the ego lane; instead, foot traffic dominates the lane.", "hazard_reasoning": "There is a man wearing a pair of brown trousers, a black shirt, a cap, cycling a bicycle in the ego lane. The cyclist occupies the lane and may have limited space due to the adjacent truck, so you should yield to avoid collision."}
{"id": "train_09032", "split": "train", "clip_key": "titan_clip_1112_000144_movie", "source": {"subset": "titan", "scenario": "clip_1112", "frame": "000144"}, "frames": ["titan_clip_1112_000144_movie_t-3.jpg", "titan_clip_1112_000144_movie_t-2.jpg", "titan_clip_1112_000144_movie_t-1.jpg", "titan_clip_1112_000144_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "An urban commercial street with a single narrow lane and block paving extends ahead, flanked by buildings and shallow sidewalks; there are no vehicles and overall flow is pedestrian-dominated. Orange cones line the right curb and the pavement appears in good condition. Two pedestrians walk down the middle ahead, one female with a red purse slightly left of the ego path and a male to the right, both continuing forward in the ego lane and likely to constrain the vehicle's pace. Several other pedestrians stand or stroll along both sides and some drift toward the lane farther ahead, creating intermittent crossing movements. A zebra crossing lies in the foreground at the entry to this shared street.", "hazard_reasoning": "There are two pedestrians walking down the middle of the road, one female with a red purse, on the left side of the ego-car, and a male, on the right side of the ego-car, because there is no sidewalk. The driver should navigate carefully as pedestrians occupying the road center increase collision risk."}
{"id": "train_09033", "split": "train", "clip_key": "2020-0227-153144_044392_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "044392"}, "frames": ["2020-0227-153144_044392_movie_t-3.jpg", "2020-0227-153144_044392_movie_t-2.jpg", "2020-0227-153144_044392_movie_t-1.jpg", "2020-0227-153144_044392_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban streetscape shows the ego vehicle traveling in the left lane of a multi-lane two-way road with no physical median; the pavement is dry and traffic is moderate. Ahead in the ego lane, a white van drives away at a steady speed, increasing the gap and effectively setting the pace. To the right in the nearest oncoming lane, a silver sedan approaches smoothly within its lane and does not conflict with the ego path. On the left sidewalk beside shopfronts and railings, a pedestrian walks parallel to traffic and remains off the roadway.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car. The van could brake unexpectedly, so follow the vehicle ahead to maintain a safe distance."}
{"id": "train_09034", "split": "train", "clip_key": "2020-0204-150838_052320_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "052320"}, "frames": ["2020-0204-150838_052320_movie_t-3.jpg", "2020-0204-150838_052320_movie_t-2.jpg", "2020-0204-150838_052320_movie_t-1.jpg", "2020-0204-150838_052320_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of slowing van ahead", "environment_perception": "An urban two-lane road runs beneath an elevated expressway, with a fenced shoulder on the right and smooth pavement; traffic is light to moderate as the lanes approach an uphill ramp. A white box truck travels directly ahead in the ego lane at a steady pace, limiting the ego vehicle's speed. Ahead to the left, a white van slows with the prevailing flow and continues in its lane slightly ahead of the ego. In the near left foreground, a small silver van proceeds slowly alongside without merging. An overhead electronic sign board is visible above the ramp.", "hazard_reasoning": "There is a white van slowing in the left lane due to traffic congestion. The van's reduced speed signals possible buildup ahead, so the driver should anticipate slower traffic and adjust speed accordingly."}
{"id": "train_09035", "split": "train", "clip_key": "titan_clip_268_000354_movie", "source": {"subset": "titan", "scenario": "clip_268", "frame": "000354"}, "frames": ["titan_clip_268_000354_movie_t-3.jpg", "titan_clip_268_000354_movie_t-2.jpg", "titan_clip_268_000354_movie_t-1.jpg", "titan_clip_268_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down for pedestrian walking near roadway", "environment_perception": "An urban narrow two-way street with single lanes and no median appears well-paved, and traffic is light with no moving cars. Ahead slightly left, a pedestrian in a blue shirt walks toward the ego vehicle in the roadway, doing so because a parked bicycle blocks the sidewalk, so he encroaches on the ego lane and may constrain the vehicle's pace. On the right edge near vending machines, a cyclist moves slowly forward along the curb on the oncoming side and could merge into the roadway. Boxes and bags stack along the left curb, and parked bicycles and scooters on both sides further narrow the corridor.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and walking on the left side of the road, toward the ego car, because of a parked bicycle on the sidewalk. The driver should slow down to safely accommodate the pedestrian forced onto the roadway by the sidewalk obstruction."}
{"id": "train_09036", "split": "train", "clip_key": "2020-0225-102455_067645_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "067645"}, "frames": ["2020-0225-102455_067645_movie_t-3.jpg", "2020-0225-102455_067645_movie_t-2.jpg", "2020-0225-102455_067645_movie_t-1.jpg", "2020-0225-102455_067645_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and maintain safe distance", "environment_perception": "An urban street with a single through lane in the ego vehicle's direction runs between a glass-fronted building and a fenced sidewalk; the dry pavement is smooth and traffic is light, bunching at a signalized intersection ahead. A green sedan taxi is stopped in the ego lane directly ahead because the overhead traffic light is red, holding the ego car. Another car farther ahead in the same lane waits at the stop line, forming a short queue. Pedestrians stand on the sidewalks near the intersection but do not enter the road.", "hazard_reasoning": "There is a green sedan stopped in the ego lane, in front of the ego car, because of red traffic lights. Drivers should stop to maintain a safe following distance and avoid collision with the halted vehicle ahead."}
{"id": "train_09037", "split": "train", "clip_key": "titan_clip_130_000024_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_130_000024_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_130_000024_movie_t-3_augB1.jpg", "titan_clip_130_000024_movie_t-2_augB1.jpg", "titan_clip_130_000024_movie_t-1_augB1.jpg", "titan_clip_130_000024_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban side street with block paving runs between tall buildings, forming a single shared lane with no distinct sidewalk and light, slow traffic. Ahead in the center of the lane, a pedestrian wearing black pants and a white shirt carries a bag and walks away in the middle of the road where no sidewalk is present, directly in the ego path. On the right edge a second pedestrian walks away along the curb, parallel to the ego vehicle. Farther ahead on the right, a small box truck stands parked and narrows the passage, while bicycles and planters line the left edge.", "hazard_reasoning": "There is a male pedestrian wearing black pants, a white shirt and carrying a bag, walking away from the ego-car, in the middle of the road, because there is no sidewalk. The driver should carefully manoeuvre around the pedestrian to avoid a collision."}
{"id": "train_09038", "split": "train", "clip_key": "2020-0214-102601_025258_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "025258"}, "frames": ["2020-0214-102601_025258_movie_t-3.jpg", "2020-0214-102601_025258_movie_t-2.jpg", "2020-0214-102601_025258_movie_t-1.jpg", "2020-0214-102601_025258_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane roadway between tall buildings has smooth asphalt and carries heavy same-direction traffic that slows ahead. A green hatchback directly in front in the ego lane decelerates because congestion forms around a white box truck farther up, constraining the ego car's pace. To the left, a white station wagon in the adjacent lane runs slightly ahead at similar speed, limiting room to move over. On the right, a dark sedan in the neighboring lane advances past the ego vehicle, tightening space. Crowds of pedestrians remain on the left sidewalk behind railings.", "hazard_reasoning": "There is a green hatchback slowing down in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adjust to the reduced speed of traffic ahead."}
{"id": "train_09039", "split": "train", "clip_key": "2020-0131-135401_056267_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "056267"}, "frames": ["2020-0131-135401_056267_movie_t-3.jpg", "2020-0131-135401_056267_movie_t-2.jpg", "2020-0131-135401_056267_movie_t-1.jpg", "2020-0131-135401_056267_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban corridor lined with tall buildings features a wide multi-lane road with smooth asphalt and no physical median, and traffic is moderate and flowing. Ahead in the ego lane, a gray sedan pulls away because the space in front of it is clear. To the right, a light blue mini car slightly ahead continues straight in its lane at a similar pace, not encroaching on the ego path. Farther ahead in the right lane, a white sedan also proceeds steadily. Bicycles are parked along the left sidewalk.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09040", "split": "train", "clip_key": "2020-0203-114632_004965_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_004965_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_004965_movie_t-3_augB1.jpg", "2020-0203-114632_004965_movie_t-2_augB1.jpg", "2020-0203-114632_004965_movie_t-1_augB1.jpg", "2020-0203-114632_004965_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction curves slightly right; the pavement is dry and intact, and traffic is moderate but slows near a small work area. Directly ahead in the ego lane, a white flatbed truck is stopped near the curb and blocks part of the lane, constraining the ego vehicle. Just beyond the crosswalk, a worker in front of the truck bends to place orange traffic cones, and one cone sits directly in front of the ego car. On the right, oncoming white vans proceed straight in their lane past the work area, passing close by.", "hazard_reasoning": "There is a traffic cone, in front of the ego car. The cone indicates ongoing construction or a lane obstruction, so the driver must stop to avoid entering the work area and ensure safety."}
{"id": "train_09041", "split": "train", "clip_key": "titan_clip_2_000456_movie", "source": {"subset": "titan", "scenario": "clip_2", "frame": "000456"}, "frames": ["titan_clip_2_000456_movie_t-3.jpg", "titan_clip_2_000456_movie_t-2.jpg", "titan_clip_2_000456_movie_t-1.jpg", "titan_clip_2_000456_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian walking towards you", "environment_perception": "A narrow urban commercial street with brick paving and no median runs straight ahead, and traffic is light with most vehicles standing at the curb. A cyclist rides ahead in the center of the lane away from the ego vehicle, subtly constraining its pace. On the right edge, a pedestrian wearing blue pants and a gray T-shirt walks toward the ego car along the curb and may enter the lane. A white van with its sliding door open is parked close on the left, and a small box truck stands farther ahead on the left, narrowing the roadway; delivery bikes are parked by the right storefront.", "hazard_reasoning": "There is a pedestrian wearing blue pants and a gray t-shirt, walking on the right side of the road, toward the ego car. The pedestrian may step into the roadway ahead, so the driver should be aware of the pedestrian walking towards you."}
{"id": "train_09042", "split": "train", "clip_key": "2020-0220-151845_000059_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "000059"}, "frames": ["2020-0220-151845_000059_movie_t-3.jpg", "2020-0220-151845_000059_movie_t-2.jpg", "2020-0220-151845_000059_movie_t-1.jpg", "2020-0220-151845_000059_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane two-way street runs between tall buildings, with dry, smooth pavement and moderate, mostly steady traffic. A silver hatchback directly ahead in the ego lane slows because a bus farther ahead is slowing, constraining the ego car's pace. The bus in the same lane decelerates near the curb as it moves forward, leading to slower flow in the ego lane. On the right, an oncoming black SUV and a white truck proceed past in their lanes without entering the ego lane. Large 40 markings on the roadway indicate a posted speed of 40.", "hazard_reasoning": "There is a silver hatchback slowing in front of the ego car, in the ego lane, because of a bus slowing ahead. You should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_09043", "split": "train", "clip_key": "2020-0131-135401_011396_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "011396"}, "frames": ["2020-0131-135401_011396_movie_t-3.jpg", "2020-0131-135401_011396_movie_t-2.jpg", "2020-0131-135401_011396_movie_t-1.jpg", "2020-0131-135401_011396_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane per direction and no median runs between mid-rise buildings; the pavement looks clean and traffic is moderate, easing toward a signalized junction. A white truck ahead in the ego lane is stopped at the intersection because the traffic light is red, temporarily holding the ego car's lane. Several oncoming cars, including a white van and a black sedan to the right, approach and pass steadily within their lane without entering the ego path. An overhead circular sign shows a 40 speed limit, and the suspended signal ahead displays red.", "hazard_reasoning": "There is a white truck stopped in the ego lane in front of the ego car, because the traffic light is red. The ego-vehicle should slow down to avoid a collision with the stopped truck at the red light."}
{"id": "train_09044", "split": "train", "clip_key": "2020-0129-105040_082263_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "082263"}, "frames": ["2020-0129-105040_082263_movie_t-3.jpg", "2020-0129-105040_082263_movie_t-2.jpg", "2020-0129-105040_082263_movie_t-1.jpg", "2020-0129-105040_082263_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban residential street with two-way traffic runs straight ahead, with the ego-car traveling in the left lane on smooth, narrow pavement and light flow. There is no median, only a yellow edge line, and the road leads toward a small intersection in the distance. A white van is parked in a recessed driveway on the right, stationary near the curb but outside the travel lane, so it does not impede the path. No moving vehicles or pedestrians appear ahead or oncoming, and no salient traffic signals are clearly visible.", "hazard_reasoning": "There is a cyclist wearing a brown coat and cycling near the intersection in front of the ego-car. The cyclist could enter the vehicle's path unexpectedly at the intersection, so the driver should stop to avoid a collision."}
{"id": "train_09045", "split": "train", "clip_key": "titan_clip_1279_000426_movie", "source": {"subset": "titan", "scenario": "clip_1279", "frame": "000426"}, "frames": ["titan_clip_1279_000426_movie_t-3.jpg", "titan_clip_1279_000426_movie_t-2.jpg", "titan_clip_1279_000426_movie_t-1.jpg", "titan_clip_1279_000426_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban side street with a single narrow lane and no median is paved smoothly but feels constricted by curbside items, and there is light traffic with no moving vehicles. On the right near the camera, a pedestrian in a white shirt carrying a backpack walks away along the curb, close to the vehicle's path. Farther ahead in the lane, several pedestrians walk away in the center while another approaches from ahead, all occupying the roadway and likely to constrain the vehicle's pace. On the right mid-block, a man steps from the building frontage and continues along the road edge, potentially edging toward the lane. Parked cars, a small cart, roadside tables, and cones line the edges, narrowing the usable lane.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a backpack, walking on the right side of the road, away from the ego car. The pedestrian walking close to the roadway could step into the lane unexpectedly, so the driver should stay alert."}
{"id": "train_09046", "split": "train", "clip_key": "2020-0204-103442_023812_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "023812"}, "frames": ["2020-0204-103442_023812_movie_t-3.jpg", "2020-0204-103442_023812_movie_t-2.jpg", "2020-0204-103442_023812_movie_t-1.jpg", "2020-0204-103442_023812_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multilane road under an elevated structure approaches a signalized intersection, with dry pavement and moderate traffic forming queues. The ego vehicle is in the left-hand travel lane. A white hatchback SUV directly ahead in the ego lane stops near the intersection because the traffic light ahead shows red, holding the ego vehicle. In the adjacent lane to the left, a white utility truck waits slightly ahead in the same direction, parallel to the queue and limiting lateral clearance. Across the intersection to the right, a taxi and other vehicles proceed from right to left through the junction, crossing in front since they have the green. The overhead signal and zebra crosswalks are clearly visible.", "hazard_reasoning": "There is a white hatchback stopped near the intersection, in the ego lane, because of the red traffic light ahead. You must stop to maintain a safe distance and avoid colliding with the halted vehicle at the red light."}
{"id": "train_09047", "split": "train", "clip_key": "2020-0220-102630_012005_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "012005"}, "frames": ["2020-0220-102630_012005_movie_t-3.jpg", "2020-0220-102630_012005_movie_t-2.jpg", "2020-0220-102630_012005_movie_t-1.jpg", "2020-0220-102630_012005_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the sedan.", "environment_perception": "An urban divided arterial with two same-direction lanes runs on dry pavement, bordered by a shrub median on the right and buildings on the left; traffic is moderate and slows toward an intersection. A silver sedan directly ahead in the ego lane is stopped for the red traffic light, holding the ego vehicle. In the adjacent right lane, a dark van slightly ahead queues and creeps toward the junction, potentially moving off first when the signal changes. Farther ahead near the stop line, a large truck in the same general queue waits and sets the overall pace. An overhead signal is visible showing red.", "hazard_reasoning": "There is a silver sedan that has stopped in front of the ego car in the ego lane, because of the red traffic light. The driver should stop to avoid a rear-end collision with the halted sedan."}
{"id": "train_09048", "split": "train", "clip_key": "2020-0225-102455_016124_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "016124"}, "frames": ["2020-0225-102455_016124_movie_t-3.jpg", "2020-0225-102455_016124_movie_t-2.jpg", "2020-0225-102455_016124_movie_t-1.jpg", "2020-0225-102455_016124_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban street with two same-direction lanes and no median leads to a signalized intersection on smooth new asphalt; traffic is light in the ego lane but queued in the adjacent right lane. Ahead in the ego lane, a white box truck drives away from the ego car and continues straight toward the junction, leading our path. To the right, a black truck with several cars lines up and creeps forward beside us, staying in their lane and not encroaching on the ego lane. A traffic signal hangs over the intersection, and construction fencing and scaffolding line the left side, with no obstacles in the roadway.", "hazard_reasoning": "There is a white truck driving away from the ego car, in the ego lane. The truck ahead may brake suddenly or obstruct visibility of the intersection, so maintain a safe following distance."}
{"id": "train_09049", "split": "train", "clip_key": "2020-0227-153144_008979_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "008979"}, "frames": ["2020-0227-153144_008979_movie_t-3.jpg", "2020-0227-153144_008979_movie_t-2.jpg", "2020-0227-153144_008979_movie_t-1.jpg", "2020-0227-153144_008979_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban signalized intersection on a two-way road with a low metal median lies ahead; the ego vehicle waits at the stop line on smooth pavement while traffic flow is paused by a red light. A pedestrian in black pants carrying a plastic bag crosses the crosswalk ahead from right to left toward the left sidewalk, moving across the ego lane during the red. Other pedestrians also traverse the crosswalk in both directions, occupying the lane and keeping the ego car stopped. Cars, including a white minivan, stand on the far side and along the right curb, waiting for the signal to change.", "hazard_reasoning": "There is a pedestrian wearing black pants and carrying a plastic bag, crossing at the crosswalk to the left side, because of the red traffic light. The pedestrian is entering the vehicle's path under a stop signal, so the driver must stop to prevent a collision."}
{"id": "train_09050", "split": "train", "clip_key": "2020-0131-135401_015975_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "015975"}, "frames": ["2020-0131-135401_015975_movie_t-3.jpg", "2020-0131-135401_015975_movie_t-2.jpg", "2020-0131-135401_015975_movie_t-1.jpg", "2020-0131-135401_015975_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multilane approach to a signalized intersection shows smooth pavement and moderate traffic that begins to roll forward from a queue. A black minivan directly ahead in the ego lane accelerates as the line moves off and it sets the ego vehicle's pace. To the right, a motorcyclist filters past alongside the queue and continues forward toward the junction, riding close to the ego lane's line. Ahead-right, a white car in the adjacent lane pulls away in parallel as space opens. Overhead traffic lights govern the junction, and roadside signs indicate straight-ahead only.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09051", "split": "train", "clip_key": "2020-0228-102841_079641_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "079641"}, "frames": ["2020-0228-102841_079641_movie_t-3.jpg", "2020-0228-102841_079641_movie_t-2.jpg", "2020-0228-102841_079641_movie_t-1.jpg", "2020-0228-102841_079641_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with three lanes in the ego direction and opposing lanes on the right runs between tall buildings; the pavement is dry and smooth, and traffic is moderate as the car approaches a signalized intersection beneath a pedestrian overpass. A white van directly ahead in the center lane approaches the crosswalk and slows, setting the ego vehicle's pace. In the left adjacent lane a white sedan slightly ahead also eases for the intersection, remaining parallel to the van. On the opposing side to the right, a white truck and other vehicles move through the intersection toward the camera as oncoming traffic. Pedestrians wait on the sidewalks near the crosswalks, and no obstacles or work zones are visible.", "hazard_reasoning": "No hazards detected; maintain awareness and continue driving attentively."}
{"id": "train_09052", "split": "train", "clip_key": "2020-0203-154554_028704_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "028704"}, "frames": ["2020-0203-154554_028704_movie_t-3.jpg", "2020-0203-154554_028704_movie_t-2.jpg", "2020-0203-154554_028704_movie_t-1.jpg", "2020-0203-154554_028704_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop and maintain safe distance", "environment_perception": "An urban multi-lane arterial with three same-direction lanes approaches an elevated expressway; the dry asphalt is well marked and traffic is heavy and mostly stopped. Directly ahead in the ego lane, a gray flatbed truck is stopped by congestion, fully blocking the path and controlling the pace. In the left adjacent lane, a white van inches forward beside the ego vehicle, holding position and limiting a lateral escape. In the right adjacent lane, a small white van is slightly ahead and creeps forward near the lane line, reducing space to maneuver.", "hazard_reasoning": "There is a gray truck stopped in the ego lane because of traffic congestion ahead on the road. The driver should stop and maintain safe distance to prevent rear-end collisions due to the congestion ahead."}
{"id": "train_09053", "split": "train", "clip_key": "2020-0207-101955_085980_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "085980"}, "frames": ["2020-0207-101955_085980_movie_t-3.jpg", "2020-0207-101955_085980_movie_t-2.jpg", "2020-0207-101955_085980_movie_t-1.jpg", "2020-0207-101955_085980_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of truck changing lanes", "environment_perception": "An urban expressway with two same-direction lanes runs between sound walls and under an overpass; the pavement looks smooth and traffic is light and steady. Ahead in the ego lane, a blue truck moves left and completes a lane change into the adjacent left lane directly in front of the ego vehicle, briefly governing the ego car's pace. In that left lane, a larger construction flatbed travels ahead at a steady speed, continuing straight and providing the gap the blue truck merges into. Farther ahead in the center of view, another truck proceeds straight in the left lane, maintaining the flow. Flexible posts line a gore area between the lanes and the shoulder, and no salient signals are visible.", "hazard_reasoning": "There is a blue truck lane changing in front of the ego car, from the ego lane to the left lane. This maneuver may intrude into the ego-vehicle's path, reducing available space and requiring you to be cautious and adjust your speed or position accordingly."}
{"id": "train_09054", "split": "train", "clip_key": "2020-0206-101736_056350_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "056350"}, "frames": ["2020-0206-101736_056350_movie_t-3.jpg", "2020-0206-101736_056350_movie_t-2.jpg", "2020-0206-101736_056350_movie_t-1.jpg", "2020-0206-101736_056350_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the same direction runs beside a right-side guardrail and an elevated roadway; the pavement is dry and smooth, and opposite-direction traffic is on a separate roadway beyond the guardrail. Traffic is heavy and slow with a short queue ahead. A white minivan directly ahead in the ego lane slows and comes to a stop because of congestion further forward, blocking the ego vehicle's path. In the adjacent left lane, a flatbed truck just ahead creeps with the queue, staying alongside and constraining an immediate lane change. Farther ahead in the left lane, a silver van also brakes within the line of vehicles, setting a similarly slow pace. No salient signals or posted speeds are visible.", "hazard_reasoning": "There is a white minivan stopping in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to avoid a collision with the stopped vehicle in the lane due to the congestion."}
{"id": "train_09055", "split": "train", "clip_key": "titan_clip_70_000024_movie", "source": {"subset": "titan", "scenario": "clip_70", "frame": "000024"}, "frames": ["titan_clip_70_000024_movie_t-3.jpg", "titan_clip_70_000024_movie_t-2.jpg", "titan_clip_70_000024_movie_t-1.jpg", "titan_clip_70_000024_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "A narrow urban street with a single lane and no centerline runs between buildings, with green railings along the right; the asphalt is smooth and traffic is light, though a stopped truck ahead narrows the way. Ahead on the left, a pedestrian in a gray shirt walks away from the ego vehicle along the roadway because a parked delivery truck occupies the curb, so he remains in the lane and constrains the path. Slightly closer on the left edge, another pedestrian with a backpack walks in the same direction near the curb while approaching the truck, staying close to the ego lane. Farther ahead on the left, the white delivery truck is stopped partly in the lane, reducing clearance for passing.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and walking on the left side of the road, away from the ego car, because of the parked vehicle. The driver should be aware as the pedestrian may enter the driving lane due to this obstruction."}
{"id": "train_09056", "split": "train", "clip_key": "titan_clip_448_000198_movie", "source": {"subset": "titan", "scenario": "clip_448", "frame": "000198"}, "frames": ["titan_clip_448_000198_movie_t-3.jpg", "titan_clip_448_000198_movie_t-2.jpg", "titan_clip_448_000198_movie_t-1.jpg", "titan_clip_448_000198_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A narrow urban street lined with shops extends ahead, using a single unmarked lane over block paving with no median, and traffic appears light and slow. A white van is parked on the right side of the street, intruding slightly into the lane and narrowing the passage. On the left near the foreground, a pedestrian walks along the curb close to the roadway. Farther ahead on the left, several pedestrians linger by storefronts and cones, with one moving along the edge of the road. Outdoor displays and cones encroach on the sidewalk, adding to the tight clearance.", "hazard_reasoning": "There is a white van parked on the right side of the street. The parked vehicle may obscure pedestrians or workers entering the lane, so you should slow down to maintain control and avoid unexpected collisions."}
{"id": "train_09057", "split": "train", "clip_key": "2020-0203-154554_012979_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "012979"}, "frames": ["2020-0203-154554_012979_movie_t-3.jpg", "2020-0203-154554_012979_movie_t-2.jpg", "2020-0203-154554_012979_movie_t-1.jpg", "2020-0203-154554_012979_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way arterial with multiple lanes in each direction runs through a commercial district, divided by a low planted median; the asphalt looks smooth and dry and traffic is light to moderate approaching a signalized intersection. Ahead, a silver van in the ego lane shifts left to change into the adjacent left lane directly in front of the ego vehicle, briefly reducing the gap. Farther ahead, a small car continues straight in the same direction at a steady pace. Oncoming vehicles beyond the median move freely without interacting with the ego lane.", "hazard_reasoning": "There is a silver van lane changing in front of the ego car, from the ego lane to the left lane. The vehicle's lateral shift may require the driver to adjust speed or steering to maintain safe distance and avoid collision."}
{"id": "train_09058", "split": "train", "clip_key": "2020-0217-110854_023936_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "023936"}, "frames": ["2020-0217-110854_023936_movie_t-3.jpg", "2020-0217-110854_023936_movie_t-2.jpg", "2020-0217-110854_023936_movie_t-1.jpg", "2020-0217-110854_023936_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid colliding with the stopped bus.", "environment_perception": "An urban multilane road with good pavement runs through a dense downtown; orange lines and a painted median separate directions, and traffic is moderate with a short queue at an intersection. A white-and-orange bus directly ahead in the ego lane is stopped for a red signal, holding the ego vehicle. A silver van in the left adjacent lane idles alongside and inches forward, remaining in its lane and not affecting the ego path. On the far right beyond the painted median, oncoming vehicles pass the junction while the signal over the ego approach remains red.", "hazard_reasoning": "There is a white and orange bus stopped in front of the ego car in the ego lane, because the light is red. You should stop to avoid colliding with the stationary bus and comply with the red traffic signal."}
{"id": "train_09059", "split": "train", "clip_key": "2020-0204-103442_033718_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "033718"}, "frames": ["2020-0204-103442_033718_movie_t-3.jpg", "2020-0204-103442_033718_movie_t-2.jpg", "2020-0204-103442_033718_movie_t-1.jpg", "2020-0204-103442_033718_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban road under an elevated structure carries light traffic; the ego travels in the left lane of a two-lane roadway bounded by a concrete wall on the left and a guardrail with a ramp on the right, and the pavement appears dry. A white box truck ahead in the ego lane slows and constrains the ego car's speed. To the right, a small van in the adjacent lane runs alongside near the guardrail and may merge or pass. Far ahead beyond the columns, a signalized intersection is visible.", "hazard_reasoning": "There is a white truck slowing in the ego lane, in front of the ego car. The driver should slow down to maintain a safe distance and prevent a rear-end collision."}
{"id": "train_09060", "split": "train", "clip_key": "titan_clip_261_000306_movie", "source": {"subset": "titan", "scenario": "clip_261", "frame": "000306"}, "frames": ["titan_clip_261_000306_movie_t-3.jpg", "titan_clip_261_000306_movie_t-2.jpg", "titan_clip_261_000306_movie_t-1.jpg", "titan_clip_261_000306_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the stopped van", "environment_perception": "A narrow urban street with a single undivided lane and red shoulder strips runs between shops; the pavement is smooth and traffic is light. A gray van is stopped on the left side ahead in front of the ego-car, occupying part of the lane and constraining the ego vehicle's pace. Two pedestrians are on the left near parked bicycles, one walking along the roadway ahead and the other standing by the curb close to the ego lane, either of whom may step into the path.", "hazard_reasoning": "There is a gray van stopped, on the left side of the road, in front of the ego-car. The stopped van directly ahead poses a collision risk if not navigated around carefully, requiring the driver to manoeuvre around it safely."}
{"id": "train_09061", "split": "train", "clip_key": "2020-0207-101955_103276_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "103276"}, "frames": ["2020-0207-101955_103276_movie_t-3.jpg", "2020-0207-101955_103276_movie_t-2.jpg", "2020-0207-101955_103276_movie_t-1.jpg", "2020-0207-101955_103276_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop for red light ahead", "environment_perception": "An urban arterial under an elevated expressway has three lanes in the same direction, bordered by curbs and guardrails; the pavement is smooth and traffic is slow near an intersection. A blue sedan directly ahead in the ego lane is stopped for the red light at the intersection, holding the ego vehicle. Farther ahead in the same lane, a tall box truck waits at the front of the queue, limiting forward view. In the adjacent right lane, a white hatchback and several cars creep forward beside us toward the signal without merging.", "hazard_reasoning": "There is a blue sedan stopped in the ego lane because of the red traffic light ahead at the intersection. You should stop to avoid colliding with the stopped vehicle at the red light."}
{"id": "train_09062", "split": "train", "clip_key": "titan_clip_184_000204_movie", "source": {"subset": "titan", "scenario": "clip_184", "frame": "000204"}, "frames": ["titan_clip_184_000204_movie_t-3.jpg", "titan_clip_184_000204_movie_t-2.jpg", "titan_clip_184_000204_movie_t-1.jpg", "titan_clip_184_000204_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban back street with a single narrow lane and no centerline runs between shopfronts; the asphalt is smooth with utility covers, and traffic is light with no moving vehicles. On the right side ahead, a man wearing a black T-shirt and black pants walks toward the ego car along the edge of the roadway, potentially edging into the travel path. Near the center-left ahead, a person stands with a bicycle at the curb, pausing as if about to move, which could place them in the lane. Farther ahead on the left, another pedestrian walks away along the gutter with little impact on the ego. A freestanding shop sign and several parked bicycles protrude from the right, narrowing the passage.", "hazard_reasoning": "There is a man wearing a black T-shirt and black pants and walking toward the ego car in the right side of the road. Because he is approaching the vehicle on the right, the driver should be aware to avoid a potential collision."}
{"id": "train_09063", "split": "train", "clip_key": "titan_clip_742_000144_movie", "source": {"subset": "titan", "scenario": "clip_742", "frame": "000144"}, "frames": ["titan_clip_742_000144_movie_t-3.jpg", "titan_clip_742_000144_movie_t-2.jpg", "titan_clip_742_000144_movie_t-1.jpg", "titan_clip_742_000144_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the parked truck.", "environment_perception": "A narrow urban two-way street with smooth pavement and no median shows light traffic as the lane narrows at roadside work ahead. A white utility truck is parked ahead along the left side in the ego lane because of construction, its bucket raised over overhead lines and it blocks most of the lane, constraining the ego's pace. A worker stands near the rear of the truck in the roadway and shifts position slowly, potentially stepping into the ego path. Another pedestrian waits on the right sidewalk by a storefront and remains stationary, not entering the road. No oncoming vehicles are visible.", "hazard_reasoning": "There's a white truck, parked on the left side of the road, in the ego lane, because of construction. The parked truck is blocking part of the driving lane, so the driver needs to carefully manoeuvre around it to avoid a collision."}
{"id": "train_09064", "split": "train", "clip_key": "2020-0210-101957_021129_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "021129"}, "frames": ["2020-0210-101957_021129_movie_t-3.jpg", "2020-0210-101957_021129_movie_t-2.jpg", "2020-0210-101957_021129_movie_t-1.jpg", "2020-0210-101957_021129_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban arterial with two same-direction lanes is bordered by curbs and metal fencing; the pavement is dry and smooth, and traffic moves at a steady moderate pace. A black motorcycle rides ahead in the ego lane and gradually pulls away as the flow opens. A white box truck travels slightly ahead in the right lane at similar speed, partially blocking the view forward but not encroaching. Farther ahead, several cars proceed in both lanes and define the cruising speed. A roadside sign on the right indicates an Emergency Road. A silver minivan is parked in a left-side bay near the lane edge.", "hazard_reasoning": "There is a black motorcycle driving in the ego lane, away from the ego car, because traffic is moving ahead. The motorcycle ahead may brake suddenly, so the driver should maintain a safe following distance."}
{"id": "train_09065", "split": "train", "clip_key": "titan_clip_660_000414_movie", "source": {"subset": "titan", "scenario": "clip_660", "frame": "000414"}, "frames": ["titan_clip_660_000414_movie_t-3.jpg", "titan_clip_660_000414_movie_t-2.jpg", "titan_clip_660_000414_movie_t-1.jpg", "titan_clip_660_000414_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban street with one unmarked lane runs between dense storefronts, the asphalt smooth and vehicle flow light amid heavy pedestrian activity. Two pedestrians wearing white shirts and black pants with handbags walk away from the ego vehicle in the middle of the road, occupying the path and constraining speed. Far ahead, a small white truck sits stopped in the same lane near a side street, further narrowing the through space. On the left, a woman steps off the curb and walks along the roadway toward the ego vehicle, close enough that she may enter the lane. Orange cones and shop displays tighten the right margin, creating a confined corridor.", "hazard_reasoning": "There are two pedestrians wearing a white shirt, black pants, and a handbag, walking in the middle of the road away from the ego car. They are in the vehicle's path, so the driver should slow down to maintain a safe distance and avoid collision."}
{"id": "train_09066", "split": "train", "clip_key": "titan_clip_186_000390_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_186_000390_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_186_000390_movie_t-3_augB1.jpg", "titan_clip_186_000390_movie_t-2_augB1.jpg", "titan_clip_186_000390_movie_t-1_augB1.jpg", "titan_clip_186_000390_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with one lane each direction, no median, and smooth asphalt shows light traffic as the ego car proceeds in the left lane. A dark car ahead in the same lane continues straight at low speed, setting the pace. On the right edge of the road two pedestrians walk away from the camera; the one in a white shirt carries a bag and keeps left of another pedestrian beside him, so they partly occupy the curbside lane and may edge toward the ego path. A silver hatchback stands nose-out from a building entrance on the right, waiting to merge into traffic. Another person on the right sidewalk looks at a phone next to the parked car.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, carrying a handbag, and walking on the right side of the road, away from the ego-car, because of another pedestrian on their right. The driver should slow down to safely respond to this pedestrian's unpredictable movement near the road edge."}
{"id": "train_09067", "split": "train", "clip_key": "2020-0217-144444_012398_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "012398"}, "frames": ["2020-0217-144444_012398_movie_t-3.jpg", "2020-0217-144444_012398_movie_t-2.jpg", "2020-0217-144444_012398_movie_t-1.jpg", "2020-0217-144444_012398_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban intersection with a single left-side lane and curbs on both sides is seen under dry pavement and light traffic that is currently stopped at the signal. A black hatchback directly ahead in the ego lane is stationary at the red light, constraining the ego vehicle's pace. Several pedestrians on both sidewalks near the junction walk along the curb and stand at the crosswalk across the ego path. Overhead blue direction signs indicate straight or right movement for this lane, and the signal ahead shows red.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane, because of the red traffic light, in front of the ego car. The driver should stop to avoid rear-ending the halted vehicle at the red light."}
{"id": "train_09068", "split": "train", "clip_key": "2020-0210-101957_068833_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "068833"}, "frames": ["2020-0210-101957_068833_movie_t-3.jpg", "2020-0210-101957_068833_movie_t-2.jpg", "2020-0210-101957_068833_movie_t-1.jpg", "2020-0210-101957_068833_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A narrow two-way urban street with one lane each direction and no median runs between close buildings; the pavement is smooth but the roadway is constricted, and traffic in the ego direction is queued and slow. A small white truck immediately ahead in the ego lane is stopped, blocking the path because congestion forms further ahead. Farther ahead toward the right, a larger white truck waits in the oncoming lane, reducing available width and contributing to the standstill. A silver car is parked along the right curb facing the ego vehicle, further narrowing the opposing lane.", "hazard_reasoning": "There is a white truck stopped in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should stop to prevent a collision with the blocked vehicle."}
{"id": "train_09069", "split": "train", "clip_key": "2020-0129-105040_072058_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "072058"}, "frames": ["2020-0129-105040_072058_movie_t-3.jpg", "2020-0129-105040_072058_movie_t-2.jpg", "2020-0129-105040_072058_movie_t-1.jpg", "2020-0129-105040_072058_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban residential two-way road with one lane each direction and a double yellow center line, dry pavement, and light traffic leads to a signalized intersection. A white van ahead in the ego lane is stopped for a red light, holding the ego car at a standstill. An oncoming sedan in the opposite lane proceeds toward the intersection on the right, passing the stopped vehicle without affecting the ego path. The overhead traffic signal facing the ego direction shows red. Fenced roadside works and a low wall line the narrow roadway but present no obstruction.", "hazard_reasoning": "There is a white van stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver should stop to maintain a safe distance and avoid colliding with the halted van at the red light."}
{"id": "train_09070", "split": "train", "clip_key": "titan_clip_908_000198_movie", "source": {"subset": "titan", "scenario": "clip_908", "frame": "000198"}, "frames": ["titan_clip_908_000198_movie_t-3.jpg", "titan_clip_908_000198_movie_t-2.jpg", "titan_clip_908_000198_movie_t-1.jpg", "titan_clip_908_000198_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down and watch for pedestrians", "environment_perception": "An urban commercial street with a narrow two-way carriageway is shown, the ego vehicle traveling in the left lane on patched asphalt while motor traffic is light and pedestrian activity is heavy. On the near left, a pedestrian in a blue shirt and black pants walks away along the edge and encroaches slightly into the ego lane. Ahead in the same lane, two pedestrians move away near the center, directly occupying the path and constraining the approach. Farther ahead near a junction, larger groups of pedestrians cross the roadway and intermittently fill the lane. Temporary orange fencing and cones line the right edge, narrowing the roadway.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and black pants, walking on the left side of the road, away from the ego car. The driver should slow down to maintain safe clearance because the pedestrian could change direction or unexpectedly enter the lane."}
{"id": "train_09071", "split": "train", "clip_key": "2020-0218-103119_037158_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "037158"}, "frames": ["2020-0218-103119_037158_movie_t-3.jpg", "2020-0218-103119_037158_movie_t-2.jpg", "2020-0218-103119_037158_movie_t-1.jpg", "2020-0218-103119_037158_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial with no physical median and dry, smooth pavement shows light traffic as the ego vehicle approaches a signalized intersection beneath a blue direction sign indicating turn options. A white truck ahead in the ego lane drives away from the ego vehicle at a steady pace and stays in the path, effectively setting the speed. On the right, an oncoming white sedan moves through the intersection toward the ego vehicle within its lane and continues straight without entering the ego lane. Farther ahead in the opposing lanes, a white van approaches the intersection and proceeds toward the ego vehicle while remaining separated by the center line.", "hazard_reasoning": "There is a white truck driving in the ego lane away from the ego car. The driver should be aware of the white truck ahead to anticipate any sudden speed changes or visibility obstructions, ensuring a safe following distance."}
{"id": "train_09072", "split": "train", "clip_key": "2020-0203-154554_076907_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "076907"}, "frames": ["2020-0203-154554_076907_movie_t-3.jpg", "2020-0203-154554_076907_movie_t-2.jpg", "2020-0203-154554_076907_movie_t-1.jpg", "2020-0203-154554_076907_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two-way traffic runs straight on dry, smooth pavement with painted lane markings and no median, and flow is moderate as the road approaches a pedestrian overpass. A small dark car ahead in the ego lane travels steadily and effectively sets the pace. Farther ahead to the left, a light van in the curb lane moves slowly near the sidewalk, occupying the adjacent same-direction lane. To the right, a large oncoming truck and several cars approach in the opposing lanes and continue past without conflict. A white sedan is parked along the left curb near the ego vehicle but remains outside the travel lane.", "hazard_reasoning": "No caption is provided and no hazards are detected; the road remains clear of obstacles and vulnerable road users, so the driver can continue driving under normal conditions."}
{"id": "train_09073", "split": "train", "clip_key": "titan_clip_918_000042_movie", "source": {"subset": "titan", "scenario": "clip_918", "frame": "000042"}, "frames": ["titan_clip_918_000042_movie_t-3.jpg", "titan_clip_918_000042_movie_t-2.jpg", "titan_clip_918_000042_movie_t-1.jpg", "titan_clip_918_000042_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A busy urban shopping street has a single narrow lane in the ego direction, no median, smooth pavement, and light traffic. A pedestrian wearing a black jacket and black pants crosses the marked crosswalk ahead from the left to the right, moving through the ego lane and briefly occupying the path. A silver minivan ahead in the same lane slows to a stop at the crosswalk to yield to the pedestrian, constraining the ego vehicle's pace, then rolls forward once the crossing clears. Other pedestrians walk along the sidewalks on both sides without approaching the roadway, and no salient traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a black jacket and black pants, crossing the street at a pedestrian crosswalk from the left side to the right side. The pedestrian is actively entering the lane, so the driver must stop to avoid a collision and ensure pedestrian safety."}
{"id": "train_09074", "split": "train", "clip_key": "titan_clip_321_000840_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_321_000840_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_321_000840_movie_t-3_augB1.jpg", "titan_clip_321_000840_movie_t-2_augB1.jpg", "titan_clip_321_000840_movie_t-1_augB1.jpg", "titan_clip_321_000840_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the pedestrian", "environment_perception": "An urban shopping alley serves as a single, very narrow shared street with no marked lanes or divider; the surface is a mix of pavers and patched asphalt, and traffic is light with no vehicles moving. Ahead in the center of the road, a woman in a green blouse and black pants carries a white bag and walks steadily down the middle because there is no sidewalk, occupying the ego vehicle's path. Farther ahead near the storefronts, a few other pedestrians move along the edges and continue away from the camera without entering the lane. Numerous sandwich boards and a blue bin line both sides, encroaching into the roadway and narrowing the passage.", "hazard_reasoning": "There is a female pedestrian, wearing a green blouse, black pants and carrying a white back, who is walking down the middle of the street, because there is no sidewalk. The driver must be cautious and manoeuvre slowly to avoid colliding with the pedestrian in the narrow path, navigating around the debris safely."}
{"id": "train_09075", "split": "train", "clip_key": "titan_clip_195_000174_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_195_000174_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_195_000174_movie_t-3_augB1.jpg", "titan_clip_195_000174_movie_t-2_augB1.jpg", "titan_clip_195_000174_movie_t-1_augB1.jpg", "titan_clip_195_000174_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban canyon of tall buildings lines a narrow two-way road without a median, the pavement is smooth, and traffic remains light as the ego vehicle proceeds in the left lane. A small car ahead in the same lane moves steadily away, loosely setting the pace. A white delivery van stands along the left edge close to the ego car, protruding into the lane and reducing clearance. A pedestrian wearing a white shirt steps from the right sidewalk and crosses right to left in front of the ego vehicle. An open garage on the right contains a stationary car near the entrance, while other pedestrians stay on the sidewalks.", "hazard_reasoning": "There is a pedestrian wearing a white shirt crossing the street from the right to the left in front of the ego-car. The driver should slow down to avoid a potential collision with the crossing pedestrian."}
{"id": "train_09076", "split": "train", "clip_key": "2020-0205-103411_087345_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "087345"}, "frames": ["2020-0205-103411_087345_movie_t-3.jpg", "2020-0205-103411_087345_movie_t-2.jpg", "2020-0205-103411_087345_movie_t-1.jpg", "2020-0205-103411_087345_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two lanes per direction and a central median appears in good condition, and traffic in the ego's direction is heavy and mostly stopped while opposing flow on the far right moves lightly. Ahead in the ego lane, a white compact hatchback is stopped because of congestion, directly blocking the ego vehicle. In the adjacent left lane, a silver SUV and other cars queue and creep forward alongside, limiting opportunities to change lanes. Farther ahead in the same direction, a large dump truck sits within the lineup, setting the pace of the column. In the rightmost same-direction lane near the junction area, two motorcycles move slowly past the jam while keeping out of the ego lane.", "hazard_reasoning": "There is a white compact hatchback stopped in front of the ego car in the ego lane, because of traffic congestion. The driver should stop because the hatchback ahead is halted by congestion, reducing available space and risking a collision if continuing."}
{"id": "train_09077", "split": "train", "clip_key": "titan_clip_1245_000102_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1245_000102_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1245_000102_movie_t-3_augB1.jpg", "titan_clip_1245_000102_movie_t-2_augB1.jpg", "titan_clip_1245_000102_movie_t-1_augB1.jpg", "titan_clip_1245_000102_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around him", "environment_perception": "A narrow urban commercial side street with a single lane and no center divider runs between shopfronts and red-white guardrails; the pavement is dry and smooth, and traffic is light. A white truck is stopped ahead in the ego lane, partially blocking the roadway and controlling the pace. Ahead near the truck, a man in black trousers, a T-shirt, and shoes stands in the ego lane as he unloads the vehicle, occupying the path and potentially entering the vehicle's line of travel. No oncoming vehicles are visible and sidewalks are mostly clear.", "hazard_reasoning": "There is a man wearing a pair of black trousers, a T-shirt, and shoes, standing in the ego lane because he is unloading the white truck. The pedestrian unloading the truck occupies the driving lane and may step into the vehicle's path, so the driver should carefully manoeuvre around him."}
{"id": "train_09078", "split": "train", "clip_key": "2020-0205-103411_080261_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "080261"}, "frames": ["2020-0205-103411_080261_movie_t-3.jpg", "2020-0205-103411_080261_movie_t-2.jpg", "2020-0205-103411_080261_movie_t-1.jpg", "2020-0205-103411_080261_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with smooth asphalt runs between mid-rise buildings, with two lanes in the ego direction and a low fence separating an additional parallel lane to the right; traffic is moderate and steady. A white box truck ahead in the left lane drives away from the ego car, setting the pace toward the next intersection. Farther ahead in the same lane, a small white car continues straight at a steady speed, remaining in the ego path. In the separated lane to the right, several white vans proceed in the same direction without merging, so they do not affect the ego lane. A circular 40 speed limit sign is visible ahead, and railings and hedges line the right side.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09079", "split": "train", "clip_key": "2020-0127-132751_104433_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "104433"}, "frames": ["2020-0127-132751_104433_movie_t-3.jpg", "2020-0127-132751_104433_movie_t-2.jpg", "2020-0127-132751_104433_movie_t-1.jpg", "2020-0127-132751_104433_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of crossing pedestrian ahead", "environment_perception": "An urban two-lane road with no median and narrow shoulders runs past shops; the pavement is dry and slightly worn, and traffic is light but momentarily slow. A silver microvan directly ahead in the ego lane stops with brake lights on, constraining the ego vehicle. A pedestrian in a brown coat carrying a handbag crosses from the right curb to the left directly in front of the ego car, prompting the stop. A dark car moves in the opposite lane on the right, continuing past without conflict.", "hazard_reasoning": "There is a female pedestrian, wearing a brown coat and carrying a handbag, crossing the road from the right side, to the left side, in front of the ego-car. The pedestrian's movement in front of the vehicle poses a potential collision risk, so the driver should be aware and prepare to adjust speed and avoid impact."}
{"id": "train_09080", "split": "train", "clip_key": "2020-0217-110854_054813_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "054813"}, "frames": ["2020-0217-110854_054813_movie_t-3.jpg", "2020-0217-110854_054813_movie_t-2.jpg", "2020-0217-110854_054813_movie_t-1.jpg", "2020-0217-110854_054813_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, with dry smooth pavement and a metal fence median separating opposite-direction lanes to the right; traffic flow is light and steady. A white kei car travels ahead in the ego lane at a constant pace, directly in the ego path. A darker sedan farther ahead occupies the right lane and gradually pulls away, not affecting the ego vehicle. Oncoming cars move along the separated roadway to the right behind the fence, remaining isolated from the ego lane. Overhead direction boards and a fuel station sign are visible, and the road is clear of obstacles.", "hazard_reasoning": "No potential hazards are detected, so the driver can continue following the traffic flow safely."}
{"id": "train_09081", "split": "train", "clip_key": "2020-0220-102630_022111_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "022111"}, "frames": ["2020-0220-102630_022111_movie_t-3.jpg", "2020-0220-102630_022111_movie_t-2.jpg", "2020-0220-102630_022111_movie_t-1.jpg", "2020-0220-102630_022111_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban divided arterial with two same-direction lanes runs past midrise buildings, with a metal barrier separating oncoming lanes to the right. The pavement is dry and intact, and traffic is heavy and slow. Directly ahead in the ego lane, a large white box truck rolls slowly and at times stops, setting the pace. Slightly ahead and to the right, a white sedan shifts from the ego lane into the right lane and comes to a stop with the queue, briefly straddling the lane line and narrowing the ego vehicle's forward space, consistent with congestion ahead. Farther ahead in the right lane, a small canvas-covered truck waits in the line of vehicles, contributing to the blockage.", "hazard_reasoning": "There is a white sedan changing into the right lane and stopping because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision due to congestion."}
{"id": "train_09082", "split": "train", "clip_key": "2020-0214-102601_004267_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "004267"}, "frames": ["2020-0214-102601_004267_movie_t-3.jpg", "2020-0214-102601_004267_movie_t-2.jpg", "2020-0214-102601_004267_movie_t-1.jpg", "2020-0214-102601_004267_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban residential two-way street with a dashed centerline climbs gently uphill; the pavement appears dry and smooth, and traffic is light with no moving vehicles. Ahead in the left lane, a person with a bicycle stands at the curb near a utility pole and faces uphill, close enough to the travel lane that they might move into it and affect the ego vehicle's path. No oncoming traffic is visible up the grade, and the rest of the roadway remains clear, with white railings and closely spaced buildings lining both sides.", "hazard_reasoning": "No hazards are detected in the scene, so the driver can continue safely without adjustments."}
{"id": "train_09083", "split": "train", "clip_key": "titan_clip_756_000120_movie", "source": {"subset": "titan", "scenario": "clip_756", "frame": "000120"}, "frames": ["titan_clip_756_000120_movie_t-3.jpg", "titan_clip_756_000120_movie_t-2.jpg", "titan_clip_756_000120_movie_t-1.jpg", "titan_clip_756_000120_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "LOW", "warning_content": "Manoeuvre carefully", "environment_perception": "An urban intersection on a narrow undivided two-way street with zebra crossings comes into view; the asphalt is slightly cracked and vehicle traffic is light. Ahead at the crosswalk, two pedestrians cross the ego lane from right to left, including one in a black T-shirt and black pants carrying a handbag, and their movement occupies the lane and constrains the approach. A third pedestrian at the far right also steps onto the crosswalk and proceeds leftward. Far ahead along the street, a small white car continues away in the same direction without influencing the scene. A red no-entry sign marks the left side street, with orange cones on the near-left corner.", "hazard_reasoning": "The pedestrian in a black t-shirt and black pants, with a handbag, is walking in the middle of the road, away from the ego car, because there is no sidewalk. The driver should manoeuvre carefully around the pedestrian to avoid a potential collision."}
{"id": "train_09084", "split": "train", "clip_key": "2020-0228-150133_059717_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "059717"}, "frames": ["2020-0228-150133_059717_movie_t-3.jpg", "2020-0228-150133_059717_movie_t-2.jpg", "2020-0228-150133_059717_movie_t-1.jpg", "2020-0228-150133_059717_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in each direction runs past mid-rise buildings, with a bollard-separated median and smooth pavement; traffic is heavy and bunches up near a pedestrian overpass. A gray sedan ahead in the ego lane slows and inches forward because of congestion ahead, keeping the ego vehicle at a low speed. A white box truck slightly ahead to the left also slows in the adjacent lane, forming a parallel queue that reduces gaps for a lane change. Oncoming vehicles to the right, including a dark pickup, pass steadily beyond the posts and remain separated from the ego path.", "hazard_reasoning": "There is a gray sedan slowing in the ego lane, away from the ego car, because of traffic congestion ahead. The sedan's reduced speed indicates potential delays, so you should slow down to maintain a safe following distance and avoid abrupt braking."}
{"id": "train_09085", "split": "train", "clip_key": "2020-0218-103119_019519_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "019519"}, "frames": ["2020-0218-103119_019519_movie_t-3.jpg", "2020-0218-103119_019519_movie_t-2.jpg", "2020-0218-103119_019519_movie_t-1.jpg", "2020-0218-103119_019519_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of lane-changing hatchback ahead", "environment_perception": "An urban multi-lane arterial with dry pavement and moderate flow runs between midrise buildings and a treelined embankment, with traffic moving steadily in both directions. Ahead, a white hatchback in the ego lane shifts left and merges into the adjacent left lane in front of the ego car, briefly dictating the ego vehicle's pace. A large box truck travels alongside just to the right in the neighboring lane, slightly ahead, continuing straight. Opposing vehicles proceed in the right-side lanes beyond the central double lines and remain separated from the ego path. Overhead blue direction signs span the roadway, and several maintenance trucks are parked along the far-left shoulder behind a guardrail.", "hazard_reasoning": "There is a white hatchback lane changing in front of the ego car, from the ego lane to the left lane. The hatchback's maneuver may reduce your available space and require you to adjust speed or trajectory."}
{"id": "train_09086", "split": "train", "clip_key": "2020-0220-151845_010926_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "010926"}, "frames": ["2020-0220-151845_010926_movie_t-3.jpg", "2020-0220-151845_010926_movie_t-2.jpg", "2020-0220-151845_010926_movie_t-1.jpg", "2020-0220-151845_010926_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with smooth pavement and red-painted curb lane carries heavy same-direction traffic that is queued at a signal. Ahead in the ego lane, a black van is stopped for the red light, holding the ego-vehicle. To the right, a long flatbed truck stacked with pipes waits in the adjacent same-direction lane alongside the ego-vehicle, remaining stationary. On the far left, two dark minivans ahead in the left lane move slowly toward the intersection and come to a halt without entering the ego lane. Overhead traffic lights facing this approach display solid red; no oncoming lanes are visible.", "hazard_reasoning": "There is a black van stopped in front of the ego-car, in the ego lane, because of red traffic light ahead. Driver should stop to avoid collision with the halted vehicle and comply with the traffic signal."}
{"id": "train_09087", "split": "train", "clip_key": "2020-0212-102546_000352_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "000352"}, "frames": ["2020-0212-102546_000352_movie_t-3.jpg", "2020-0212-102546_000352_movie_t-2.jpg", "2020-0212-102546_000352_movie_t-1.jpg", "2020-0212-102546_000352_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane intersection with high-rise buildings is ahead; the ego vehicle occupies the leftmost same-direction lane beside a raised median on smooth pavement, and traffic is light but halted at the signal. A black taxi directly ahead in the ego lane is stopped for the red light, holding our position. To the right, a delivery scooter rides up along the right side of the taxi and eases to a stop at the crosswalk, positioning near the front of the lane. Slightly farther right, another motorcycle waits at the line, also oriented straight. The traffic signal facing our approach shows red, while pedestrians stand on the left sidewalk.", "hazard_reasoning": "There is a black taxi stopped in front of the ego car, because of a red traffic light. The driver must stop to avoid rear-ending the taxi at the red signal."}
{"id": "train_09088", "split": "train", "clip_key": "2020-0129-144857_060620_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "060620"}, "frames": ["2020-0129-144857_060620_movie_t-3.jpg", "2020-0129-144857_060620_movie_t-2.jpg", "2020-0129-144857_060620_movie_t-1.jpg", "2020-0129-144857_060620_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban elevated bridge carries a two-lane roadway with dry, slightly worn pavement, flanked by high noise barriers; a narrow raised median runs along the right, separating the opposite carriageway where oncoming flow is light. The white sedan directly ahead in the ego lane slows because traffic congestion develops further up the bridge, and it bounds the ego car's pace. To the left, a long queue of trucks and cars crawls in the adjacent lane, occasionally inching forward and potentially merging into the ego lane. Farther ahead, larger box trucks in the queue contribute to the bottleneck. A continuous curb on the right edge limits lateral room.", "hazard_reasoning": "There is a white sedan slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to reduced speeds due to the buildup of traffic."}
{"id": "train_09089", "split": "train", "clip_key": "titan_clip_269_000144_movie", "source": {"subset": "titan", "scenario": "clip_269", "frame": "000144"}, "frames": ["titan_clip_269_000144_movie_t-3.jpg", "titan_clip_269_000144_movie_t-2.jpg", "titan_clip_269_000144_movie_t-1.jpg", "titan_clip_269_000144_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked SUV", "environment_perception": "A narrow urban street without a centerline carries light traffic on smooth pavement as the ego vehicle proceeds slowly. A white hatchback ahead in the ego lane moves cautiously as it approaches a parked vehicle, constraining the ego vehicle's pace. Farther ahead, a white SUV is parked on the left side within the ego lane, narrowing the passage for through traffic. On the left, two cyclists ride forward along a path behind a green railing parallel to the road. No oncoming vehicles appear, and bicycles and trash bags line the right curb but remain off the roadway.", "hazard_reasoning": "There's a white SUV, parked on the left side of the road, in the ego lane. The vehicle obstructs the driving lane, requiring cautious maneuvering to safely pass."}
{"id": "train_09090", "split": "train", "clip_key": "2020-0218-151547_009335_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "009335"}, "frames": ["2020-0218-151547_009335_movie_t-3.jpg", "2020-0218-151547_009335_movie_t-2.jpg", "2020-0218-151547_009335_movie_t-1.jpg", "2020-0218-151547_009335_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to the scooter", "environment_perception": "An urban multi-lane divided road with a central median and smooth pavement carries moderate same-direction traffic through a broad intersection. A scooter just ahead on the left accelerates from the stop line in front of the ego car and may merge into the ego lane. A white coach bus farther ahead in the same lane proceeds straight and gradually pulls away, shaping the available gap. Cars in the right lanes advance in the same direction beside the median and continue straight without encroaching.", "hazard_reasoning": "There is a scooter accelerating in front of the ego car. Because the scooter may merge into your path and gain speed quickly, you should yield to it to maintain a safe distance and avoid a collision."}
{"id": "train_09091", "split": "train", "clip_key": "2020-0127-132751_090078_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "090078"}, "frames": ["2020-0127-132751_090078_movie_t-3.jpg", "2020-0127-132751_090078_movie_t-2.jpg", "2020-0127-132751_090078_movie_t-1.jpg", "2020-0127-132751_090078_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane in each direction is divided by a narrow painted median, and the pavement appears smooth; traffic in the ego lane is currently halted. A blue pickup truck directly ahead in the ego lane is stopped, queuing because of congestion further up the road and constraining the ego vehicle's pace. Two pedestrians walk along the right-side sidewalk away from the camera and stay off the roadway. No salient traffic signals or signs are visible, and no other obstacles appear in the lane.", "hazard_reasoning": "There is a blue pickup truck stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver must stop to maintain a safe distance and avoid colliding with the halted vehicle ahead."}
{"id": "train_09092", "split": "train", "clip_key": "titan_clip_239_000018_movie", "source": {"subset": "titan", "scenario": "clip_239", "frame": "000018"}, "frames": ["titan_clip_239_000018_movie_t-3.jpg", "titan_clip_239_000018_movie_t-2.jpg", "titan_clip_239_000018_movie_t-1.jpg", "titan_clip_239_000018_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrians ahead", "environment_perception": "A narrow two-way urban street without lane markings runs between tall buildings; there is no median, the pavement is dry, and traffic is light. Three pedestrians in a group are on the left side walking toward the ego car along the road edge, moving slowly and close enough that they may step into the travel path, so they govern the approach speed. A black van ahead along the left curb appears stopped and protrudes into the lane, further narrowing the usable space for the ego vehicle. Parked bicycles and shop items line the right curb and reduce clearance, but no signals or other moving vehicles are evident.", "hazard_reasoning": "There are three pedestrians in a group, walking along the left side of the road, toward the ego car. The driver should be aware because these pedestrians may step off the sidewalk into the travel lane unexpectedly, requiring prompt attention and speed adjustment."}
{"id": "train_09093", "split": "train", "clip_key": "titan_clip_945_000324_movie", "source": {"subset": "titan", "scenario": "clip_945", "frame": "000324"}, "frames": ["titan_clip_945_000324_movie_t-3.jpg", "titan_clip_945_000324_movie_t-2.jpg", "titan_clip_945_000324_movie_t-1.jpg", "titan_clip_945_000324_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist ahead", "environment_perception": "A narrow urban two-way street with edge lines and no center divider is bordered by buildings; the pavement is smooth and traffic is light. The ego vehicle proceeds along the left side past a green-awning shop and several parked bicycles at the curbs. Ahead in the opposing lane, a cyclist wearing a beige dress rides toward the ego car along the right side of the road, steadily approaching and occupying the middle of the available roadway, constraining the passing space. A utility pole with a sign and stacked bags at the right curb further narrow the corridor.", "hazard_reasoning": "There is a cyclist, wearing a beige dress cycling on the right side of the road toward the ego car. The cyclist is approaching on the right side, so the driver should be aware to maintain safe clearance and avoid collision."}
{"id": "train_09094", "split": "train", "clip_key": "titan_clip_1032_000186_movie", "source": {"subset": "titan", "scenario": "clip_1032", "frame": "000186"}, "frames": ["titan_clip_1032_000186_movie_t-3.jpg", "titan_clip_1032_000186_movie_t-2.jpg", "titan_clip_1032_000186_movie_t-1.jpg", "titan_clip_1032_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian movement", "environment_perception": "An urban residential scene shows a narrow two-way road without a centerline, bordered by green railings and driveways; the asphalt is smooth and traffic is light with no oncoming vehicles. A pedestrian in a gray shirt with a backpack walks along the left edge ahead, moving away from the ego car and staying near the curb but close to the lane. A cyclist farther ahead rides away in the middle of the ego lane at low speed, constraining the pace. A school-zone sign and a convex safety mirror are visible on the right.", "hazard_reasoning": "There is a pedestrian wearing a gray shirt and backpack, walking along the left side of the road, away from the ego car. The driver should remain vigilant because the pedestrian might change course and enter the road unexpectedly."}
{"id": "train_09095", "split": "train", "clip_key": "2020-0226-140503_052228_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "052228"}, "frames": ["2020-0226-140503_052228_movie_t-3.jpg", "2020-0226-140503_052228_movie_t-2.jpg", "2020-0226-140503_052228_movie_t-1.jpg", "2020-0226-140503_052228_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Be aware of the motorcycle ahead", "environment_perception": "An urban multilane arterial passes between mid-rise buildings; the pavement is dry and smooth, and traffic flows at a moderate pace. A black motorcycle rides ahead in the ego lane at short distance, moving steadily and directly setting the ego car's pace. To the right, a black sedan in the adjacent lane advances slightly faster, remaining parallel without encroaching. Farther right, a gray car continues in the outer lane among other vehicles and stays ahead without affecting the ego. A blue curbside lane on the left is separated from the travel lane by a painted buffer.", "hazard_reasoning": "There is a black motorcycle driving in front of the ego car in the ego lane. The driver should be cautious because the motorcycle may brake suddenly or change position unexpectedly, requiring timely reaction."}
{"id": "train_09096", "split": "train", "clip_key": "2020-0228-102841_006417_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "006417"}, "frames": ["2020-0228-102841_006417_movie_t-3.jpg", "2020-0228-102841_006417_movie_t-2.jpg", "2020-0228-102841_006417_movie_t-1.jpg", "2020-0228-102841_006417_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "A wide multi-lane urban road runs straight between mid-rise buildings, with smooth pavement and a temporary work-zone barrier closing the right side so same-direction traffic moves slowly. Parked cars line the left curb. A black minivan ahead in the ego lane is stopped in front of the ego car, blocked by congestion, and it constrains the ego vehicle's pace. A cyclist rides ahead near the parked cars on the left, moving cautiously along the roadway and close to the ego lane. On the right, several trucks queue beside the cones and barricades, waiting or creeping in the adjacent lane and narrowing the usable roadway.", "hazard_reasoning": "There is a black minivan stopped in the ego lane, because of traffic congestion ahead, in front of the ego car. The driver should stop to avoid a collision with the halted vehicle ahead."}
{"id": "train_09097", "split": "train", "clip_key": "titan_clip_385_000108_movie", "source": {"subset": "titan", "scenario": "clip_385", "frame": "000108"}, "frames": ["titan_clip_385_000108_movie_t-3.jpg", "titan_clip_385_000108_movie_t-2.jpg", "titan_clip_385_000108_movie_t-1.jpg", "titan_clip_385_000108_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial street with a narrow two-way road curves left; it has a single lane each way, no median, smooth pavement, and traffic moves slowly. Ahead in the ego lane, a black sedan is stopped because of congestion, holding the ego vehicle's progress. On the right, pedestrians walk along the sidewalk near a crosswalk, with one close to the curb who may step onto the crossing. Along the left edge beside the ego vehicle, a blue truck sits very close and edges forward, limiting lateral clearance as the road bends.", "hazard_reasoning": "There is a black sedan stopped in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_09098", "split": "train", "clip_key": "titan_clip_1294_000222_movie", "source": {"subset": "titan", "scenario": "clip_1294", "frame": "000222"}, "frames": ["titan_clip_1294_000222_movie_t-3.jpg", "titan_clip_1294_000222_movie_t-2.jpg", "titan_clip_1294_000222_movie_t-1.jpg", "titan_clip_1294_000222_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around obstruction", "environment_perception": "A narrow two-way urban side street with edge lines and smooth pavement shows light traffic and no median. Ahead on the right, a white van is stopped with its rear door open and cargo visible, parked in the ego lane while being unloaded and narrowing the usable path. Farther ahead on the right, a large box truck stands stationary near the curb, further constricting clearance in that section. Bollards and a utility pole along the right edge add to the pinch point, and no signals or speed signs are salient.", "hazard_reasoning": "There is a white van parked on the right side of the road, in the ego lane, because it is being unloaded. The van's position obstructs the lane and limits visibility, so the driver should manoeuvre carefully to avoid collision."}
{"id": "train_09099", "split": "train", "clip_key": "titan_clip_511_000054_movie", "source": {"subset": "titan", "scenario": "clip_511", "frame": "000054"}, "frames": ["titan_clip_511_000054_movie_t-3.jpg", "titan_clip_511_000054_movie_t-2.jpg", "titan_clip_511_000054_movie_t-1.jpg", "titan_clip_511_000054_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the white truck", "environment_perception": "A dense urban side street with a single narrow lane and no median is shown, the pavement is in good condition and traffic is very light. The ego vehicle proceeds straight where a white box truck ahead in the ego lane is parked for unloading, occupying the lane and constraining the ego's progress. A dark covered truck is parked at the curb on the near right, further narrowing the entry to the street. A few pedestrians walk along the sidewalks by the buildings without stepping into the roadway, and no oncoming vehicles or signals are visible.", "hazard_reasoning": "There is a white truck parked in front of the ego car, in the ego lane, because it is being unloaded. The driver should carefully manoeuvre around the parked truck to avoid collision in the ego lane."}
{"id": "train_09100", "split": "train", "clip_key": "2020-0210-101957_020909_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_020909_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_020909_movie_t-3_augB1.jpg", "2020-0210-101957_020909_movie_t-2_augB1.jpg", "2020-0210-101957_020909_movie_t-1_augB1.jpg", "2020-0210-101957_020909_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban multi-lane road with dry, well-marked pavement carries moderate traffic that bunches ahead. A white motorcycle ahead in the ego lane slows because of congestion ahead, directly setting the ego car's pace. Farther ahead, a white box truck in the adjacent right lane moves slowly and contributes to the queue. A white SUV slightly ahead to the right travels parallel in the next lane, limiting space for a lane change. On the left sidewalk, a pedestrian stands beside a crosswalk, waiting. An overhead sign indicates Toshima City, and construction equipment is parked at the curb on the right.", "hazard_reasoning": "There is a white motorcycle slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision under these conditions."}
{"id": "train_09101", "split": "train", "clip_key": "2020-0226-140503_082955_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "082955"}, "frames": ["2020-0226-140503_082955_movie_t-3.jpg", "2020-0226-140503_082955_movie_t-2.jpg", "2020-0226-140503_082955_movie_t-1.jpg", "2020-0226-140503_082955_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with marked lanes and no physical median shows dry pavement and heavy, slow-moving traffic that is mostly stopped near an intersection. A white car directly ahead in the ego lane is stopped due to congestion ahead, holding the ego vehicle. To the left, a large cement mixer truck stands alongside in the adjacent lane, reducing lateral space and sight lines. Ahead in the next lane to the right, a yellow cargo truck is queued and stationary, and farther right a small flatbed truck also waits, signaling a multi-lane backup. Buildings line both sides, and no unusual hazards beyond the congestion are visible.", "hazard_reasoning": "There is a white sedan stopped in front of the ego car because of traffic congestion ahead. Stop to avoid collision due to the halted vehicle in heavy traffic."}
{"id": "train_09102", "split": "train", "clip_key": "2020-0131-135401_004985_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "004985"}, "frames": ["2020-0131-135401_004985_movie_t-3.jpg", "2020-0131-135401_004985_movie_t-2.jpg", "2020-0131-135401_004985_movie_t-1.jpg", "2020-0131-135401_004985_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban two-way street with a narrow single lane per direction and no median; the pavement is clean and traffic is slow and stopped. A white box truck is directly ahead in the ego lane, stopped due to traffic congestion and blocking the ego vehicle's path. On the right, an oncoming taxi waits alongside the truck near the centerline, constrained by the stoppage and limiting space between directions. On the left-side sidewalk ahead, three pedestrians walk away along the raised path and remain separated from the roadway. An overhead sign posts 40, and bright sunlight from the upper right causes glare across the scene.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane, due to traffic congestion. Driver should stop to maintain a safe distance and avoid collision with the halted vehicle."}
{"id": "train_09103", "split": "train", "clip_key": "titan_clip_616_000330_movie", "source": {"subset": "titan", "scenario": "clip_616", "frame": "000330"}, "frames": ["titan_clip_616_000330_movie_t-3.jpg", "titan_clip_616_000330_movie_t-2.jpg", "titan_clip_616_000330_movie_t-1.jpg", "titan_clip_616_000330_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial side street forms a single narrow two-way lane with no median and smooth pavement; traffic is light as the ego vehicle rolls slowly ahead. A cyclist wearing a white shirt approaches on the right side of the road, riding toward the ego vehicle near the middle and may intrude into the ego lane. Slightly ahead and a bit right of center, two pedestrians walk along the roadway away from the camera, staying near the travel path and constraining the available space.", "hazard_reasoning": "There is a cyclist wearing a white shirt, cycling on the right side of the road, towards the ego car. The cyclist is approaching the vehicle's path and could impede its movement, so the driver should slow down to maintain a safe distance."}
{"id": "train_09104", "split": "train", "clip_key": "titan_clip_450_000210_movie", "source": {"subset": "titan", "scenario": "clip_450", "frame": "000210"}, "frames": ["titan_clip_450_000210_movie_t-3.jpg", "titan_clip_450_000210_movie_t-2.jpg", "titan_clip_450_000210_movie_t-1.jpg", "titan_clip_450_000210_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian pushing cart", "environment_perception": "In an urban setting, the ego vehicle proceeds along a narrow two-way side street with no centerline toward a small intersection; the asphalt is clean and traffic is light. Ahead at the junction, a pedestrian pushing a cart walks from right to left across the vehicle's path, moving slowly in front of the ego car and constraining its pace. To the right of the intersection, a silver microvan stands stopped at the curb of the cross street, remaining stationary near the pedestrian and partly edging into the junction. Orange cones on the far right and a green roadside barrier on the left slightly narrow the roadway.", "hazard_reasoning": "There is a pedestrian pushing a cart and walking in front of the ego car. The pedestrian may move into the driving lane unexpectedly, so the driver should be aware and prepared to react."}
{"id": "train_09105", "split": "train", "clip_key": "2020-0210-155354_047323_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "047323"}, "frames": ["2020-0210-155354_047323_movie_t-3.jpg", "2020-0210-155354_047323_movie_t-2.jpg", "2020-0210-155354_047323_movie_t-1.jpg", "2020-0210-155354_047323_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban three-lane arterial with a curbside guardrail runs straight on dry, intact pavement, and traffic is moderate and slow-moving beneath overhead signs. There is a silver van stopped in the ego lane ahead of the ego car, holding the ego vehicle in place. In the adjacent lane to the right, a black sedan creeps forward past the ego position, potentially passing the stopped van and limiting chances to merge. Farther ahead in the center lane, a white van slows within a queue, indicating continued congestion in that lane. Overhead gantry boards display lane-use arrows for through directions.", "hazard_reasoning": "There is a silver van stopped in the ego lane, in front of the ego car. You must stop to avoid colliding with the stationary van in your lane."}
{"id": "train_09106", "split": "train", "clip_key": "titan_clip_348_000240_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_348_000240_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_348_000240_movie_t-3_augB1.jpg", "titan_clip_348_000240_movie_t-2_augB1.jpg", "titan_clip_348_000240_movie_t-1_augB1.jpg", "titan_clip_348_000240_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban backstreet with a single narrow lane rises gently between tall buildings; the block-paved surface is dry with no center divider or clear lane markings, and traffic is very light with no vehicles visible. Midway ahead, a pedestrian in a green shirt and black pants crosses from right to left in the middle of the road, moving directly across the ego vehicle's path. Farther up the block, two pedestrians walk away along the left edge, remaining outside the travel lane. Another person stands at the curb by a blue container on the left, stationary near the roadway and potentially entering the lane.", "hazard_reasoning": "There is a pedestrian wearing a green shirt and black pants, and crossing the street from the right side to the left side, in the middle of the road. The driver should slow down because the pedestrian is crossing midroad, posing a collision risk."}
{"id": "train_09107", "split": "train", "clip_key": "titan_clip_726_000174_movie", "source": {"subset": "titan", "scenario": "clip_726", "frame": "000174"}, "frames": ["titan_clip_726_000174_movie_t-3.jpg", "titan_clip_726_000174_movie_t-2.jpg", "titan_clip_726_000174_movie_t-1.jpg", "titan_clip_726_000174_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban divided boulevard with a planted median runs ahead with a single through lane in the ego direction; the pavement is dry and traffic is light. Approaching a zebra crossing at an intersection, a pedestrian wearing a black dress crosses from the right to the left directly ahead, moving across the ego lane and constraining the car's progress. Near the left curb beside the crosswalk, a bicyclist stands with the bike and hesitates at the edge, potentially entering the crossing in front of the car. Several white vans are stopped along the left curb near the intersection, partially narrowing the view toward the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a black dress crossing from the right side to the left side of the road via the pedestrian crossing in front of the ego car. The driver should slow down to avoid a potential collision with the crossing pedestrian."}
{"id": "train_09108", "split": "train", "clip_key": "2020-0210-101957_012832_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "012832"}, "frames": ["2020-0210-101957_012832_movie_t-3.jpg", "2020-0210-101957_012832_movie_t-2.jpg", "2020-0210-101957_012832_movie_t-1.jpg", "2020-0210-101957_012832_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "In an urban setting, the ego vehicle is at a signalized intersection with a wide zebra crossing on a two-lane road without a median and smooth pavement; traffic is light. Ahead, a red van crosses the ego path from the right and slows while angling toward the left side of its street, effectively changing lanes in front of a stopped vehicle. To the right, a dark sedan on the cross street waits behind the van and moves only slightly, limited by the crossing movement. On the left sidewalk near a station entrance, two pedestrians stand and do not enter the crosswalk.", "hazard_reasoning": "There is a red van slowing down in the ego lane and driving toward the left lane, because it is lane changing in front of a stopped vehicle. The driver should slow down to anticipate the merging van and avoid a potential collision."}
{"id": "train_09109", "split": "train", "clip_key": "2020-0210-101957_071755_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "071755"}, "frames": ["2020-0210-101957_071755_movie_t-3.jpg", "2020-0210-101957_071755_movie_t-2.jpg", "2020-0210-101957_071755_movie_t-1.jpg", "2020-0210-101957_071755_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "A narrow urban residential two-way road without a median extends ahead, the pavement smooth and clean and traffic light. The ego vehicle keeps to the left as a white van ahead in the ego lane steadily pulls away, increasing the gap while continuing straight. No oncoming vehicles or pedestrians are visible near the roadway, and buildings line the left while a fenced sidewalk runs along the right. A round roadside sign shows a 30 speed limit alongside a no-parking restriction.", "hazard_reasoning": "There is a white van driving away from the ego car in front of the ego car. The van occupies the center of the road and may force you to change lanes to maintain safe following distance and avoid collision, so you should carefully manoeuvre around it."}
{"id": "train_09110", "split": "train", "clip_key": "2020-0127-132751_104623_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "104623"}, "frames": ["2020-0127-132751_104623_movie_t-3.jpg", "2020-0127-132751_104623_movie_t-2.jpg", "2020-0127-132751_104623_movie_t-1.jpg", "2020-0127-132751_104623_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane in each direction runs past shops, divided by a solid yellow centerline; the pavement is dry and traffic is slow. A gray van directly ahead in the ego lane is stopped with brake lights on because of congestion, holding the ego vehicle. Oncoming cars move steadily in the opposite lane to the right of the centerline and do not encroach. A pedestrian walks along the right sidewalk near storefronts, remaining clear of the roadway.", "hazard_reasoning": "There is a gray van stopped in front of the ego car in the ego lane, because of traffic congestion. The van's sudden halt indicates slowed traffic ahead, so the driver must stop to avoid a rear-end collision."}
{"id": "train_09111", "split": "train", "clip_key": "2020-0203-114632_024934_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "024934"}, "frames": ["2020-0203-114632_024934_movie_t-3.jpg", "2020-0203-114632_024934_movie_t-2.jpg", "2020-0203-114632_024934_movie_t-1.jpg", "2020-0203-114632_024934_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with one lane per direction leads toward an underpass; the pavement is dry and smooth, and traffic is light. A silver box truck ahead in the ego left lane proceeds slowly toward the bridge, constraining the ego vehicle's pace. Farther ahead in the same lane, a small white van continues straight under the bridge, remaining in the ego path at a greater distance. In the opposing lane to the right, a black taxi approaches and passes by, and a white sedan follows it, both traveling straight without entering the ego lane. No salient traffic signals are visible.", "hazard_reasoning": "A black van is slowing in front of the ego car in the ego lane. The van's deceleration in your lane could require you to brake suddenly to avoid a rear-end collision."}
{"id": "train_09112", "split": "train", "clip_key": "2020-0221-115122_010686_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "010686"}, "frames": ["2020-0221-115122_010686_movie_t-3.jpg", "2020-0221-115122_010686_movie_t-2.jpg", "2020-0221-115122_010686_movie_t-1.jpg", "2020-0221-115122_010686_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban multi-lane roadway runs beneath elevated expressway ramps, with good pavement and heavy, stop-and-go same-direction traffic. A white van is stopped directly ahead in the ego lane because traffic is backed up, blocking the ego vehicle's path. To the right, a white sedan in the adjacent lane creeps forward alongside, keeping pace and leaving little lateral space. On the left, a small hatchback inches ahead in the neighboring lane, appearing to filter into gaps near the van and potentially narrowing the opening. Farther ahead near the right guardrail, a small white van is also halted with the queue, reinforcing the congestion. No traffic signals or speed signs are visible.", "hazard_reasoning": "There is a white van stopped in the ego lane because of traffic congestion ahead. You should stop to avoid a collision with the halted vehicle under heavy traffic conditions."}
{"id": "train_09113", "split": "train", "clip_key": "2020-0220-102630_056366_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "056366"}, "frames": ["2020-0220-102630_056366_movie_t-3.jpg", "2020-0220-102630_056366_movie_t-2.jpg", "2020-0220-102630_056366_movie_t-1.jpg", "2020-0220-102630_056366_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs under a pedestrian overpass, the pavement smooth and traffic moderate and steady. A yellow van ahead in the ego lane drives away from the ego car, setting the following distance. A white van farther ahead in the adjacent right lane continues straight at a similar pace, remaining parallel to the ego path. A silver van close on the right advances in its lane slightly ahead, limiting lateral space but not merging. Overhead signs and the pedestrian bridge are visible, and no hazards or work zones appear.", "hazard_reasoning": "There is a yellow van driving in the ego lane away from the ego car. The van ahead may brake unexpectedly, so the driver should be cautious and monitor its movement to maintain a safe following distance."}
{"id": "train_09114", "split": "train", "clip_key": "2020-0204-103442_009295_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "009295"}, "frames": ["2020-0204-103442_009295_movie_t-3.jpg", "2020-0204-103442_009295_movie_t-2.jpg", "2020-0204-103442_009295_movie_t-1.jpg", "2020-0204-103442_009295_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane divided arterial with a landscaped median and smooth pavement runs between tall buildings, and traffic is moderate to heavy with a gradual slowdown ahead. Directly ahead in the ego lane, a black vehicle slows as congestion builds, constraining the ego car's pace. In the left adjacent lane, a white van slightly ahead continues straight at a similar speed without signaling, posing a potential lane-side presence. On the opposite carriageway to the right of the median, streams of oncoming cars and trucks move steadily and remain separated. A mast-mounted traffic signal is visible further ahead over the roadway.", "hazard_reasoning": "There is a black van slowing down in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision due to the reduced speed of the van."}
{"id": "train_09115", "split": "train", "clip_key": "titan_clip_1042_000024_movie", "source": {"subset": "titan", "scenario": "clip_1042", "frame": "000024"}, "frames": ["titan_clip_1042_000024_movie_t-3.jpg", "titan_clip_1042_000024_movie_t-2.jpg", "titan_clip_1042_000024_movie_t-1.jpg", "titan_clip_1042_000024_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the parked van and nearby boxes.", "environment_perception": "An urban two-way street with one narrow lane in each direction runs between mid-rise buildings; the pavement is dry and in good condition, and traffic is light. A white van parked on the left side of the road sits just ahead at the curb, slightly narrowing the path for the ego vehicle. A silver sedan is parked on the right a little farther ahead, leaving a central corridor but reducing lateral clearance. Farther ahead in the same direction, a small hatchback proceeds away at modest speed along the center of the lane, loosely setting the pace. No oncoming vehicles are visible and no signals appear to affect movement.", "hazard_reasoning": "There is a white van parked on the left side of the road. The parked van and nearby boxes could obstruct the lane and limit available space, so the driver should be aware."}
{"id": "train_09116", "split": "train", "clip_key": "2020-0220-102630_041984_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "041984"}, "frames": ["2020-0220-102630_041984_movie_t-3.jpg", "2020-0220-102630_041984_movie_t-2.jpg", "2020-0220-102630_041984_movie_t-1.jpg", "2020-0220-102630_041984_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multilane arterial runs beneath an elevated expressway, with smooth pavement and painted yellow dividers; traffic in the ego direction is heavy and mostly stationary as it approaches a wide intersection. A white box truck directly ahead in the ego lane is stopped because congestion blocks the way, holding the ego-vehicle. To the left, a small flatbed truck draws alongside in the adjacent lane and then halts, limiting any chance to change lanes. Farther ahead to the right, same-direction cars move intermittently through the junction while oncoming traffic remains separated in distant opposing lanes and does not interact. No obstacles, work zones, or unusual signs are visible.", "hazard_reasoning": "There is a white truck stopped in front of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a rear-end collision due to the congested traffic and stopped vehicle."}
{"id": "train_09117", "split": "train", "clip_key": "2020-0129-105040_043263_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "043263"}, "frames": ["2020-0129-105040_043263_movie_t-3.jpg", "2020-0129-105040_043263_movie_t-2.jpg", "2020-0129-105040_043263_movie_t-1.jpg", "2020-0129-105040_043263_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial runs beneath an elevated expressway, with dry pavement and the ego car in the rightmost lane beside a guardrail as traffic is heavy and queuing. A silver car directly ahead in the ego lane is stopped at a red light, holding the ego car. A large blue truck alongside in the lane to the left inches forward in the same direction, narrowing the lateral space and constraining any lane change. Farther ahead in the left lane, a white van and other cars queue slowly, continuing the backup. The overhead signal ahead shows red, and columns and the guardrail confine the right edge with little shoulder.", "hazard_reasoning": "There is a silver SUV stopped in the ego lane in front of the ego car because of a red traffic light. The driver must stop to avoid a rear-end collision with the halted SUV at the red light."}
{"id": "train_09118", "split": "train", "clip_key": "2020-0210-101957_006247_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "006247"}, "frames": ["2020-0210-101957_006247_movie_t-3.jpg", "2020-0210-101957_006247_movie_t-2.jpg", "2020-0210-101957_006247_movie_t-1.jpg", "2020-0210-101957_006247_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane in each direction and a solid yellow centerline runs between shops and apartments; the pavement is dry and traffic is light. Approaching a signalized intersection, the overhead light facing the ego direction is red. A green sedan directly ahead in the ego lane is stopped at the stop line for the red light, holding the ego car. An oncoming white van moves through the intersection on the right and continues past without conflict. A pedestrian on the left sidewalk walks along the railings near storefronts and remains off the roadway.", "hazard_reasoning": "There is a green sedan stopped in front of the ego car, because of a red traffic light. The driver should stop to avoid colliding with the stationary vehicle at the red light."}
{"id": "train_09119", "split": "train", "clip_key": "2020-0205-152530_012323_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "012323"}, "frames": ["2020-0205-152530_012323_movie_t-3.jpg", "2020-0205-152530_012323_movie_t-2.jpg", "2020-0205-152530_012323_movie_t-1.jpg", "2020-0205-152530_012323_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop behind the black hatchback", "environment_perception": "An urban multi-lane arterial with a left-side guardrail runs between high-rise buildings; the pavement is dry but glary in low sun, and traffic is heavy in a queue toward a signalized intersection. Immediately ahead in the ego lane, a black hatchback is stopped for a red traffic light and holds the lane. In the adjacent right lane slightly ahead, a small white truck creeps forward past the queue, limiting room for a lane change. A pedestrian on the left sidewalk walks along the barrier without approaching the roadway. The bright sun ahead reduces contrast while the red signal governs flow.", "hazard_reasoning": "There is a black hatchback stopped in the ego lane because of a red traffic light ahead. The driver should stop because the vehicle ahead is stationary at a red signal, preventing a potential rear-end collision if not braking in time."}
{"id": "train_09120", "split": "train", "clip_key": "2020-0203-114632_067509_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "067509"}, "frames": ["2020-0203-114632_067509_movie_t-3.jpg", "2020-0203-114632_067509_movie_t-2.jpg", "2020-0203-114632_067509_movie_t-1.jpg", "2020-0203-114632_067509_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of gray van merging left", "environment_perception": "An urban arterial with two through lanes and a narrow left-side lane appears dry and well kept, and traffic is light and flowing. Ahead, a gray van changes from the ego lane into the left lane directly in front of the ego car before continuing straight. Farther ahead to the right, a small flatbed truck maintains a steady course in the right lane. On the left sidewalk, a bicyclist rides along behind a railing, remaining separated from the carriageway. Pavement arrows ahead indicate through and right-turn movements.", "hazard_reasoning": "There is a gray van lane changing in front of the ego car, from the ego lane to the left lane. The van's merging maneuver could force you to adjust speed or steering unexpectedly, so maintain awareness to avoid collision."}
{"id": "train_09121", "split": "train", "clip_key": "2020-0213-143552_057974_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "057974"}, "frames": ["2020-0213-143552_057974_movie_t-3.jpg", "2020-0213-143552_057974_movie_t-2.jpg", "2020-0213-143552_057974_movie_t-1.jpg", "2020-0213-143552_057974_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial with two same-direction lanes and a shrub-lined curb on the right shows smooth pavement and heavy, slow traffic. A large white box truck directly in front of the ego vehicle sits stopped in the ego lane because of congestion ahead, keeping the ego car stationary. In the left adjacent lane, a black van edges forward alongside at low speed as the queue inches ahead. An overhead pedestrian bridge spans the road with a sign for Route 254 Kawagoe Kaido. No pedestrians or oncoming traffic are visible, and no obstacles appear in the roadway.", "hazard_reasoning": "There is a white truck stopped in the ego lane because of traffic congestion ahead, in front of the ego car. Since the vehicle ahead is stationary due to congestion, you should stop to maintain a safe following distance and prevent a collision."}
{"id": "train_09122", "split": "train", "clip_key": "titan_clip_1207_000510_movie", "source": {"subset": "titan", "scenario": "clip_1207", "frame": "000510"}, "frames": ["titan_clip_1207_000510_movie_t-3.jpg", "titan_clip_1207_000510_movie_t-2.jpg", "titan_clip_1207_000510_movie_t-1.jpg", "titan_clip_1207_000510_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of cyclist ahead", "environment_perception": "An urban street with a single lane in the ego direction and a raised hedge median on the right has smooth pavement and light traffic. A cyclist wearing a black T-shirt rides ahead along the right edge of the lane, moving away from the ego car and occupying part of the path, which may constrain the ego vehicle's pace. A white van is far ahead in the same lane and continues away steadily. A small truck is parked at the left curb.", "hazard_reasoning": "There is a cyclist wearing a black t-shirt, cycling away from the ego car, on the right side of the road. The cyclist could shift into the lane or slow unexpectedly, so the driver should stay alert to its presence."}
{"id": "train_09123", "split": "train", "clip_key": "2020-0212-102546_012950_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "012950"}, "frames": ["2020-0212-102546_012950_movie_t-3.jpg", "2020-0212-102546_012950_movie_t-2.jpg", "2020-0212-102546_012950_movie_t-1.jpg", "2020-0212-102546_012950_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban street with two same-direction lanes runs between close buildings, with a guardrail and sidewalk on the left and worn asphalt with a manhole cover; traffic moves slowly. A white box truck directly ahead in the ego lane slows and sets the pace. To the right, a yellow taxi travels alongside in the adjacent lane at a similar slow speed, limiting a lane change. Farther ahead-right, a silver minivan queues in the right lane and continues slowly with the congestion. No signals or median are visible, and there is no oncoming traffic in view.", "hazard_reasoning": "There is a white truck slowing in front of the ego car, in the ego lane. The truck's deceleration may necessitate sudden braking if the driver follows too closely, so maintaining a safe following distance is crucial."}
{"id": "train_09124", "split": "train", "clip_key": "2020-0220-102630_030727_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "030727"}, "frames": ["2020-0220-102630_030727_movie_t-3.jpg", "2020-0220-102630_030727_movie_t-2.jpg", "2020-0220-102630_030727_movie_t-1.jpg", "2020-0220-102630_030727_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Stop and keep distance from slowing cyclist", "environment_perception": "An urban street with two same-direction lanes and no median; the asphalt is smooth and traffic is heavy, moving slowly in a queue. A rider in a brown jacket on a scooter ahead in the left lane slows near the curb because congestion ahead constrains pace. A white hatchback slightly ahead to the right creeps forward in the adjacent lane, limiting the ego vehicle's chance to pass. Farther ahead, a tall box truck nearly stops in the center of the lane and becomes the head of the backup, blocking the view down the road. On the left, a flatbed truck with orange cones occupies the curbside, narrowing the lane.", "hazard_reasoning": "There is a cyclist wearing a brown jacket, slowing in the ego lane on the left side of the road, because of traffic congestion ahead. The cyclist's reduced speed could lead to a collision if not anticipated, so the driver should stop and keep distance."}
{"id": "train_09125", "split": "train", "clip_key": "2020-0129-105040_000072_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "000072"}, "frames": ["2020-0129-105040_000072_movie_t-3.jpg", "2020-0129-105040_000072_movie_t-2.jpg", "2020-0129-105040_000072_movie_t-1.jpg", "2020-0129-105040_000072_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "An urban scene shows a multi-lane arterial running left to right across the view with smooth pavement and light to moderate flow, while the ego car is stopped at a zebra crosswalk. A pedestrian very close to the camera walks from the left across the crosswalk ahead, occupying the ego vehicle's path and holding it. In the near lane of the cross street, a dark van proceeds leftward in front of the ego car and clears the junction. In the farther lane ahead, a white pick-up truck continues from right to left away from the ego car, moving with the stream.", "hazard_reasoning": "There is a white pick-up truck in front of the ego car driving from the right to the left side away from the ego car. This partially obstructing truck reduces forward visibility, so the driver should yield to avoid potential hidden hazards."}
{"id": "train_09126", "split": "train", "clip_key": "2020-0127-132751_059748_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "059748"}, "frames": ["2020-0127-132751_059748_movie_t-3.jpg", "2020-0127-132751_059748_movie_t-2.jpg", "2020-0127-132751_059748_movie_t-1.jpg", "2020-0127-132751_059748_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe following distance.", "environment_perception": "An urban two-way arterial with multiple lanes and a double solid median is shown, the pavement dry and smooth and traffic moving at a moderate pace. A silver sedan directly ahead in the ego lane slows because a large box truck farther ahead in the same lane is also slowing, constraining the ego vehicle's pace. The box truck continues near the centerline at reduced speed, leading a short queue. A small white truck ahead to the left travels slowly close to the curb in an adjacent lane without intruding into the ego lane. A dark minicar is parked on the left shoulder near the camera, narrowing the curbside margin.", "hazard_reasoning": "There is a silver sedan slowing in the ego lane, because of truck slowing ahead, in front of the ego car. Slow down to maintain safe following distance and prevent collision."}
{"id": "train_09127", "split": "train", "clip_key": "2020-0217-144444_018006_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "018006"}, "frames": ["2020-0217-144444_018006_movie_t-3.jpg", "2020-0217-144444_018006_movie_t-2.jpg", "2020-0217-144444_018006_movie_t-1.jpg", "2020-0217-144444_018006_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban arterial beneath an elevated expressway carries two lanes in the ego direction, divided from oncoming traffic on the right by a guardrail; the pavement is smooth and traffic is heavy and slow. A white hatchback directly ahead in the ego lane slows to a crawl because congestion builds further forward, so the ego vehicle follows its pace. A dark box truck slightly farther ahead in the adjacent left lane also moves slowly with brake lights on, contributing to the queue and partially blocking the view ahead. On the separated roadway to the right, an oncoming car travels past behind the rail without interacting.", "hazard_reasoning": "There is a white hatchback slowing in the ego lane, because of traffic congestion ahead. The white hatchback's reduced speed due to congestion ahead signals a need to slow down to maintain safe following distance and prevent a rear-end collision."}
{"id": "train_09128", "split": "train", "clip_key": "titan_clip_825_000198_movie", "source": {"subset": "titan", "scenario": "clip_825", "frame": "000198"}, "frames": ["titan_clip_825_000198_movie_t-3.jpg", "titan_clip_825_000198_movie_t-2.jpg", "titan_clip_825_000198_movie_t-1.jpg", "titan_clip_825_000198_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban back street with a narrow two-way roadway lacks a center divider, shows smooth pavement, and has green edge lanes; no moving vehicles are visible and foot traffic is light. In the middle ahead, a man wearing a white shirt and beige pants, holding a black object, walks toward the ego vehicle and passes a woman moving the opposite way near the right side, briefly occupying the travel path. On the left by the FamilyMart frontage, two pedestrians walk away from the ego car along the curb. Farther ahead near mid-block, several people stand and cross the street between buildings in the ego vehicle's direction of travel. Traffic cones and planters line the right curb beside storefronts.", "hazard_reasoning": "A man wearing a white shirt and beige pants, holding a black object in one hand, is walking in the middle of the street toward the ego-car and passing a woman walking in the opposite direction. The driver should slow down because the pedestrian in the roadway may move unpredictably and pose a collision risk."}
{"id": "train_09129", "split": "train", "clip_key": "2020-0220-151845_045386_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "045386"}, "frames": ["2020-0220-151845_045386_movie_t-3.jpg", "2020-0220-151845_045386_movie_t-2.jpg", "2020-0220-151845_045386_movie_t-1.jpg", "2020-0220-151845_045386_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road passes through a narrow walled underpass beneath an elevated structure, with one lane in each direction divided by a solid yellow centerline; the pavement is dry and traffic is light. Ahead in the ego lane, a small work truck with a chevron panel slows and creeps toward the underpass, constraining the ego car's pace. In the opposite lane farther ahead, a few oncoming cars move steadily through without affecting the ego path. An overhead sign with Japanese text spans the roadway, and tight barriers on both sides leave little shoulder space but no additional obstacles.", "hazard_reasoning": "There is a red truck slowing in the ego lane, in front of the ego car. Because the truck's speed reduction could lead to a potential rear-end collision if the driver does not adjust, the driver should slow down to maintain a safe following distance."}
{"id": "train_09130", "split": "train", "clip_key": "titan_clip_231_000558_movie", "source": {"subset": "titan", "scenario": "clip_231", "frame": "000558"}, "frames": ["titan_clip_231_000558_movie_t-3.jpg", "titan_clip_231_000558_movie_t-2.jpg", "titan_clip_231_000558_movie_t-1.jpg", "titan_clip_231_000558_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "In an urban shopping district, the ego vehicle approaches a narrow two-way street with one lane each direction, no median, and smooth pavement; traffic is light near the intersection. A pedestrian in a white T-shirt and blue pants with a backpack, also carrying a bag, crosses on the left side ahead while walking away from the vehicle, briefly occupying the crosswalk and affecting the departure. On the right side of the crosswalk, another pedestrian carrying a white shopping bag walks toward the camera and may pass in front of the ego lane. Ahead to the right, a white van waits near the intersection without moving into the path. Parked vehicles, including a box truck tight to the left curb, narrow the entry and partly obscure the near-left view.", "hazard_reasoning": "There is a pedestrian wearing a white t-shirt and blue pants, carrying a backpack, and carrying a bag, crossing the street at the left side of the intersection, walking away from the ego car. The driver should manoeuvre carefully around the pedestrian to avoid a collision as the pedestrian is directly in the vehicle's intended path."}
{"id": "train_09131", "split": "train", "clip_key": "titan_clip_196_000246_movie", "source": {"subset": "titan", "scenario": "clip_196", "frame": "000246"}, "frames": ["titan_clip_196_000246_movie_t-3.jpg", "titan_clip_196_000246_movie_t-2.jpg", "titan_clip_196_000246_movie_t-1.jpg", "titan_clip_196_000246_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be cautious of cyclist deviating path", "environment_perception": "A dense urban street lined with tall buildings features a narrow unmarked two-way roadway in good condition with light to moderate, slow-moving traffic. A cyclist in a white shirt rides ahead from the left curb toward the middle of the road, moving away from the ego car to pass a parked vehicle and potentially entering the ego lane. A white car ahead in the same direction slows while threading past obstacles, constraining the ego vehicle's pace. A blue truck is stopped on the right edge near the camera, narrowing the roadway. Orange cones and small barricades further constrict the center.", "hazard_reasoning": "A cyclist in a white shirt, cycling in the middle of the road from the left side, away from the ego car, because of a parked vehicle. The cyclist's path may shift unexpectedly as they bypass the parked vehicle, requiring the driver to stay alert."}
{"id": "train_09132", "split": "train", "clip_key": "2020-0129-105040_060808_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "060808"}, "frames": ["2020-0129-105040_060808_movie_t-3.jpg", "2020-0129-105040_060808_movie_t-2.jpg", "2020-0129-105040_060808_movie_t-1.jpg", "2020-0129-105040_060808_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the cyclist", "environment_perception": "An urban two-way shopping street with a single narrow lane per direction and no median appears well paved, with red edge strips and light traffic. An oncoming cyclist rides near the middle of the roadway toward the ego-vehicle, directly opposing its path and likely constraining its progress. A small white truck is stopped tight to the curb on the right while workers stand on a ladder at the storefront, narrowing the passage and creating a roadside work hazard. A pedestrian waits at the left curb by a shop entrance near the crosswalk, close to the travel lane and potentially stepping out.", "hazard_reasoning": "There is a female cyclist, in red pants and a red coat, cycling in the middle of the road towards the ego-car. The driver should carefully manoeuvre around the cyclist to avoid a potential collision as she occupies the vehicle's path."}
{"id": "train_09133", "split": "train", "clip_key": "2020-0212-102546_027007_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "027007"}, "frames": ["2020-0212-102546_027007_movie_t-3.jpg", "2020-0212-102546_027007_movie_t-2.jpg", "2020-0212-102546_027007_movie_t-1.jpg", "2020-0212-102546_027007_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a central planted median and smooth pavement shows light to moderate same-direction traffic as the ego car proceeds in the left lane toward a signalized intersection. A white van ahead in the ego lane moves away at a steady pace, effectively setting the ego vehicle's speed. In the right lane, a dark SUV and several cars continue straight through the junction, matching the flow without merging. Farther ahead, additional vehicles travel along the corridor. The traffic signal ahead displays green, and a round sign posts 50. The marked crosswalk is clear and no obstacles or work zones are visible.", "hazard_reasoning": "There is a white van driving in the ego lane away from the ego car. The leading van may brake unexpectedly, so the driver should remain vigilant and anticipate possible speed changes."}
{"id": "train_09134", "split": "train", "clip_key": "2020-0228-102841_068970_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "068970"}, "frames": ["2020-0228-102841_068970_movie_t-3.jpg", "2020-0228-102841_068970_movie_t-2.jpg", "2020-0228-102841_068970_movie_t-1.jpg", "2020-0228-102841_068970_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "On a narrow urban two-way street with smooth pavement and no median, the ego car moves slowly amid light traffic. A pedestrian wearing a gray jacket and carrying a backpack crosses directly ahead from the left to the right, causing the ego vehicle to yield. A silver microvan is stopped along the left curb just beyond the crossing, remaining stationary and narrowing the usable lane. On the right sidewalk a person stands near a parked van by the curb, waiting close to the roadway and may step out. Orange cones and low railings line the left edge, and no traffic signals are visible.", "hazard_reasoning": "There is a pedestrian wearing a gray jacket, carrying a backpack, and crossing the street, in front of the ego-car, from the left to the right side. The pedestrian is crossing directly ahead in the vehicle's path, so the driver should slow down to avoid collision."}
{"id": "train_09135", "split": "train", "clip_key": "2020-0210-155354_019650_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-155354_019650_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-155354_019650_movie_t-3_augB1.jpg", "2020-0210-155354_019650_movie_t-2_augB1.jpg", "2020-0210-155354_019650_movie_t-1_augB1.jpg", "2020-0210-155354_019650_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane each way and a solid yellow center line has dry pavement and slow, moderate traffic. Ahead, a white van in the ego lane slows and shifts left to pass a large delivery truck stopped along the left curb, temporarily constraining the ego car as it drives around the parked truck. In the opposing lane, a small white minivan approaches straight ahead, limiting how far the van can move toward the center line. To the right, a kei truck is parked at the curb while pedestrians on the right sidewalk stay clear of the roadway.", "hazard_reasoning": "There is a white van lane changing in front of the ego car, toward the left side of the road, because it is driving around a parked truck. The driver should slow down to maintain a safe following distance and react to the van's maneuver."}
{"id": "train_09136", "split": "train", "clip_key": "2020-0203-114632_075580_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "075580"}, "frames": ["2020-0203-114632_075580_movie_t-3.jpg", "2020-0203-114632_075580_movie_t-2.jpg", "2020-0203-114632_075580_movie_t-1.jpg", "2020-0203-114632_075580_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Be cautious of turning white van.", "environment_perception": "An urban multilane arterial without a median has smooth pavement and moderate same-direction traffic approaching a signalized intersection. A small white car directly ahead in the leftmost ego lane advances then slows at the crosswalk, setting the ego vehicle's pace. Farther ahead, a construction truck in the center lane proceeds slowly and contributes to the queue. On the left side near the junction, a white van turns out of the ego lane into a side road when a gap appears, momentarily affecting the lane.", "hazard_reasoning": "There is a white van turning on the left side of the road, from the ego lane onto a different road, because of the opportunity for turning in the intersection. The white van's lane change for a left turn may cross the ego vehicle's path, so be cautious of its movement."}
{"id": "train_09137", "split": "train", "clip_key": "2020-0129-144857_088072_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "088072"}, "frames": ["2020-0129-144857_088072_movie_t-3.jpg", "2020-0129-144857_088072_movie_t-2.jpg", "2020-0129-144857_088072_movie_t-1.jpg", "2020-0129-144857_088072_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction runs straight, divided by a low guardrail median; the pavement looks smooth and traffic is moderate and steady. A black van drives ahead in the ego lane at a steady pace, effectively setting the ego car's speed. A silver car is slightly ahead to the right in the adjacent same-direction lane and continues forward without lane changes. Oncoming cars flow past on the far side of the median, well separated from the ego path. Overhead blue direction signs are visible near the next junction.", "hazard_reasoning": "A black van is driving in front of the ego car in the ego lane. You should follow the vehicle ahead at a safe distance because it may slow or brake unexpectedly."}
{"id": "train_09138", "split": "train", "clip_key": "titan_clip_39_000516_movie", "source": {"subset": "titan", "scenario": "clip_39", "frame": "000516"}, "frames": ["titan_clip_39_000516_movie_t-3.jpg", "titan_clip_39_000516_movie_t-2.jpg", "titan_clip_39_000516_movie_t-1.jpg", "titan_clip_39_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around her", "environment_perception": "An urban commercial street with a single narrow shared lane and no divider, paved with bricks and in good condition, shows very light vehicle presence but many pedestrians. Ahead in the center of the lane, a woman in a white coat and black skirt walks away from the ego vehicle, occupying the travel path and constraining its pace. On the right edge near the storefronts, a man walks away along the curb within the lane and may drift toward the center as he passes signs and a parked bicycle. Farther ahead, another pedestrian crosses the lane from right to left near the shops, briefly entering the ego path. Bicycles are parked along the right sidewalk and street furniture further narrows the roadway.", "hazard_reasoning": "There is a lady, wearing a white coat and a black skirt, walking in the middle of the road, away from the ego car, because the sidewalk is congested. The driver should carefully manoeuvre to avoid collision with the pedestrian walking in the roadway due to sidewalk congestion."}
{"id": "train_09139", "split": "train", "clip_key": "2020-0228-150133_081282_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "081282"}, "frames": ["2020-0228-150133_081282_movie_t-3.jpg", "2020-0228-150133_081282_movie_t-2.jpg", "2020-0228-150133_081282_movie_t-1.jpg", "2020-0228-150133_081282_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided road with two lanes in the ego direction runs straight, bordered by a low hedge median that separates oncoming traffic; the pavement appears smooth and traffic is light. Ahead in the ego lane, a black van drives away at a steady pace, constraining the ego vehicle's speed. Farther ahead in the same lane, a small car continues steadily, leading the van. An overhead gantry sign spans the roadway in the distance.", "hazard_reasoning": "There is a black van driving in the ego lane away from the ego car. Stay alert in case it slows, stops, or changes course unexpectedly, as it may affect your driving path ahead."}
{"id": "train_09140", "split": "train", "clip_key": "titan_clip_922_000390_movie", "source": {"subset": "titan", "scenario": "clip_922", "frame": "000390"}, "frames": ["titan_clip_922_000390_movie_t-3.jpg", "titan_clip_922_000390_movie_t-2.jpg", "titan_clip_922_000390_movie_t-1.jpg", "titan_clip_922_000390_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban residential street with a single two-way lane and no centerline runs between close buildings; the asphalt looks smooth and traffic is light with no moving vehicles. Ahead on the left side, a tall pedestrian wearing a white coat and carrying a handbag walks away along the left edge of the lane, constraining the ego vehicle's path. A black car is parked along the left, its nose close to the roadway and further narrowing space near the pedestrian. Additional parked bicycles and a utility pole with a parking sign appear on the right, and no signals or unusual controls are prominent.", "hazard_reasoning": "There is a tall lady wearing a white coat, carrying a handbag, and walking, on the left side of the road, away from the ego car. She may enter the vehicle's path unpredictably, so the driver should manoeuvre carefully to maintain safe clearance."}
{"id": "train_09141", "split": "train", "clip_key": "2020-0227-104226_034245_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "034245"}, "frames": ["2020-0227-104226_034245_movie_t-3.jpg", "2020-0227-104226_034245_movie_t-2.jpg", "2020-0227-104226_034245_movie_t-1.jpg", "2020-0227-104226_034245_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with one lane per direction and a solid yellow centerline stretches ahead; the pavement is smooth and traffic is light. A white box truck drives ahead in the ego lane at a steady pace, leading the flow and constraining the ego car's speed. On the oncoming side, a small white van is pulled over at the right curb with its sliding door open, and a person stands beside it, but it remains outside the travel lane. A straight-ahead blue sign is visible on the left sidewalk.", "hazard_reasoning": "There is a white truck driving in front of the ego car in the ego lane, because of the green traffic light. The driver should be aware that the green light may change soon and the truck ahead could slow or stop unexpectedly."}
{"id": "train_09142", "split": "train", "clip_key": "2020-0204-150838_083733_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "083733"}, "frames": ["2020-0204-150838_083733_movie_t-3.jpg", "2020-0204-150838_083733_movie_t-2.jpg", "2020-0204-150838_083733_movie_t-1.jpg", "2020-0204-150838_083733_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A suburban expressway with two same-direction lanes runs beside a right-side guardrail and sound barrier; the pavement is dry and traffic is heavy with intermittent stops. A gray hatchback directly ahead in the ego lane slows and inches forward because of congestion, holding the ego vehicle to the same slow pace. A large white box truck alongside in the left lane creeps forward parallel to the ego car, narrowing the gap and limiting any lane changes. Farther ahead, a queue of trucks and vans in both lanes continues slowly, forming the visible bottleneck. No salient traffic signals or signs appear, and no unusual obstacles are present.", "hazard_reasoning": "There is a gray hatchback slowing in the ego lane in front of the ego car, due to the traffic congestion ahead. The driver should slow down to maintain a safe following distance and avoid a collision in the congested traffic."}
{"id": "train_09143", "split": "train", "clip_key": "titan_clip_969_000162_movie", "source": {"subset": "titan", "scenario": "clip_969", "frame": "000162"}, "frames": ["titan_clip_969_000162_movie_t-3.jpg", "titan_clip_969_000162_movie_t-2.jpg", "titan_clip_969_000162_movie_t-1.jpg", "titan_clip_969_000162_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of pedestrian approaching right side", "environment_perception": "An urban shopping street is shown, a narrow two-way road without a centerline, smooth pavement, and light traffic with no vehicles in view as the road curves left toward a zebra crossing. On the right edge near the storefronts, a pedestrian in a white shirt and cap walks toward the ego car along the curb, moving close to the roadway. On the left sidewalk behind a guard rail, two pedestrians walk away from the ego vehicle, remaining separated from traffic. A pedestrian crossing sign and the zebra crossing are clearly visible ahead. Storefront signboards intrude onto the narrow sidewalk, and the corridor of buildings and a slight bend limit forward sight.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and cap, walking along the right side of the road, toward the ego car. The driver should be cautious because the pedestrian could step into the lane unexpectedly."}
{"id": "train_09144", "split": "train", "clip_key": "titan_clip_453_000096_movie", "source": {"subset": "titan", "scenario": "clip_453", "frame": "000096"}, "frames": ["titan_clip_453_000096_movie_t-3.jpg", "titan_clip_453_000096_movie_t-2.jpg", "titan_clip_453_000096_movie_t-1.jpg", "titan_clip_453_000096_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked truck.", "environment_perception": "An urban two-way street with one lane in each direction runs straight between buildings on smooth asphalt with no median; rail tracks are embedded near the right edge and traffic is light. An oncoming white mini truck travels along the right side toward the camera, staying in its lane and passing near the centerline, making it the main interaction. Far ahead, a small vehicle proceeds away in the ego lane with ample spacing and no impact on speed. Bicycles are parked behind a green railing on the left, and the tracks and narrow curbside space form minor roadside constraints.", "hazard_reasoning": "There is a white truck parked at the right side of the road. The parked truck may limit available space and visibility, so be aware to maintain safe clearance."}
{"id": "train_09145", "split": "train", "clip_key": "titan_clip_1000_000564_movie", "source": {"subset": "titan", "scenario": "clip_1000", "frame": "000564"}, "frames": ["titan_clip_1000_000564_movie_t-3.jpg", "titan_clip_1000_000564_movie_t-2.jpg", "titan_clip_1000_000564_movie_t-1.jpg", "titan_clip_1000_000564_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "be aware of the parked truck ahead", "environment_perception": "A narrow urban street with a single lane and smooth pavement is lightly trafficked, with no moving vehicles ahead or oncoming. Ahead, a black truck is parked on the right side in the ego lane, narrowing the carriageway and constraining the ego vehicle's path. On the left very near the ego vehicle, a person pushes a stroller along the road edge, moving slowly in the same direction and encroaching slightly into the lane, creating a close lateral conflict. Shopfront signboards and bins line the right curb near the truck and protrude a little into the roadway, further reducing clearance.", "hazard_reasoning": "There is a black truck parked on the right side of the road, in the ego lane. The parked truck partially obstructs the ego lane and sightlines ahead, so the driver should be aware of its presence to avoid a collision."}
{"id": "train_09146", "split": "train", "clip_key": "2020-0129-144857_078582_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "078582"}, "frames": ["2020-0129-144857_078582_movie_t-3.jpg", "2020-0129-144857_078582_movie_t-2.jpg", "2020-0129-144857_078582_movie_t-1.jpg", "2020-0129-144857_078582_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with a guardrail median separates oncoming traffic, the pavement looks clean and dry, and traffic flows steadily. A white van ahead in the ego lane proceeds straight through the green signal, setting the ego car's pace. To its left, a blue city bus in the adjacent lane continues straight at a similar speed, remaining roughly alongside. Farther ahead in that lane, a small box truck rolls toward the intersection and limits the bus's speed. On the left sidewalk, a person with a bicycle waits by the fence.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane, because of the green traffic light. Following the vehicle ahead allows the driver to maintain a safe distance and react quickly if it slows or stops unexpectedly."}
{"id": "train_09147", "split": "train", "clip_key": "2020-0217-110854_072002_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "072002"}, "frames": ["2020-0217-110854_072002_movie_t-3.jpg", "2020-0217-110854_072002_movie_t-2.jpg", "2020-0217-110854_072002_movie_t-1.jpg", "2020-0217-110854_072002_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one lane per direction and no median is dry and in good condition, and traffic is slow with a queue ahead. A white flatbed truck directly ahead in the ego lane is stopped because of congestion, holding the ego vehicle. Along the left curb just ahead, two white vans stand at the roadside, one protruding slightly into the lane and narrowing clearance near the truck. Occasional oncoming cars pass in the right-side lane without affecting the ego lane.", "hazard_reasoning": "There is a white truck stopped in the ego lane, because of traffic congestion ahead. The driver should stop to prevent colliding with the stationary truck and respond to the congestion."}
{"id": "train_09148", "split": "train", "clip_key": "2020-0220-151845_012737_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "012737"}, "frames": ["2020-0220-151845_012737_movie_t-3.jpg", "2020-0220-151845_012737_movie_t-2.jpg", "2020-0220-151845_012737_movie_t-1.jpg", "2020-0220-151845_012737_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial with smooth pavement carries heavy, stop-and-go same-direction traffic, and no oncoming lanes or median are visible. A black van directly ahead in the ego lane slows because of congestion ahead, constraining the ego vehicle's pace. A gray delivery truck in the right adjacent lane creeps forward alongside the ego car, remaining close as the queue compresses. Pedestrians walk on the left sidewalk near a side street and storefronts, moving parallel to the road without entering the carriageway.", "hazard_reasoning": "There is a black van slowing in front of the ego car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe gap and avoid collision due to the slowed traffic ahead."}
{"id": "train_09149", "split": "train", "clip_key": "2020-0220-102630_032033_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "032033"}, "frames": ["2020-0220-102630_032033_movie_t-3.jpg", "2020-0220-102630_032033_movie_t-2.jpg", "2020-0220-102630_032033_movie_t-1.jpg", "2020-0220-102630_032033_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road approaches a signalized intersection with good pavement and no median, and traffic is light and flowing smoothly. Ahead in the ego lane, a black van drives away from the ego car as the way in front of it is clear. To the right, a large white bus travels in the right-turn lane near the intersection, easing its speed as it nears the corner without impeding the ego lane. On the left, a motor scooter ahead proceeds straight in the curb lane, remaining parallel to the ego vehicle. Overhead traffic lights and mid-rise buildings frame the scene.", "hazard_reasoning": "There is a black van in front of the ego-car, in the ego lane, driving away from the ego car, because traffic ahead is clear. The driver should follow the van to maintain a safe distance in case it brakes suddenly."}
{"id": "train_09150", "split": "train", "clip_key": "2020-0220-151845_064203_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "064203"}, "frames": ["2020-0220-151845_064203_movie_t-3.jpg", "2020-0220-151845_064203_movie_t-2.jpg", "2020-0220-151845_064203_movie_t-1.jpg", "2020-0220-151845_064203_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban arterial runs under an elevated structure with two same-direction lanes and a left-side guardrail; the dry pavement carries slow, queuing traffic. A red flatbed truck directly ahead in the leftmost ego lane is stopped for a red light ahead, so the ego vehicle waits behind it. To the right, a black SUV in the adjacent lane is also stopped slightly ahead, constraining any lane change. Farther ahead in that lane, several cars queue toward the signal. No obstacles or work zones are visible in the roadway.", "hazard_reasoning": "There is a red truck stopped in the ego lane, because of the red traffic lights ahead. The ego driver needs to stop to avoid colliding with the stationary truck and comply with the traffic signal."}
{"id": "train_09151", "split": "train", "clip_key": "titan_clip_1185_000432_movie", "source": {"subset": "titan", "scenario": "clip_1185", "frame": "000432"}, "frames": ["titan_clip_1185_000432_movie_t-3.jpg", "titan_clip_1185_000432_movie_t-2.jpg", "titan_clip_1185_000432_movie_t-1.jpg", "titan_clip_1185_000432_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around parked truck", "environment_perception": "A narrow urban commercial street with no marked centerline appears dry and in good condition, and traffic is light. Ahead on the left in the ego lane, a blue pickup truck is parked for loading, its bed piled with bags, narrowing the usable lane. A pedestrian at the left foreground hustles along the curb past the storefronts, briefly edging near the roadway where the ego vehicle would pass. On the right, a silver van stands at the curb angled slightly toward the street but remains stationary. Trash bags sit on the left curb beside the pickup, adding minor roadside obstacles.", "hazard_reasoning": "There is a blue pick-up truck parked on the left side of the road, in the ego lane, because it is being loaded. Drivers should carefully manoeuvre around the parked truck to avoid collision and maintain a safe clearance under these constrained conditions."}
{"id": "train_09152", "split": "train", "clip_key": "titan_clip_387_000132_movie", "source": {"subset": "titan", "scenario": "clip_387", "frame": "000132"}, "frames": ["titan_clip_387_000132_movie_t-3.jpg", "titan_clip_387_000132_movie_t-2.jpg", "titan_clip_387_000132_movie_t-1.jpg", "titan_clip_387_000132_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban commercial back street with interlocking-brick pavement forms a narrow two-way road with no median or clear lane lines, and traffic flow is light at low speed. An oncoming white van ahead moves slowly near the middle of the roadway, occupying much of the width and constraining the ego vehicle's space. On the left edge ahead, two pedestrians walk away from the ego along the roadway, including a person carrying a backpack, and their closeness to the travel path makes them relevant. On the right, another pedestrian walks along the curbside sidewalk parallel to the ego's direction and remains outside the lane.", "hazard_reasoning": "There is a pedestrian carrying a backpack and walking on the left side of the road, away from the ego car. This pedestrian may step into the driving path unexpectedly, so the driver should manoeuvre carefully around them."}
{"id": "train_09153", "split": "train", "clip_key": "titan_clip_606_000378_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_606_000378_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_606_000378_movie_t-3_augB1.jpg", "titan_clip_606_000378_movie_t-2_augB1.jpg", "titan_clip_606_000378_movie_t-1_augB1.jpg", "titan_clip_606_000378_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban two-way street with a single narrow lane in each direction rises gently ahead, with no median and fair pavement; traffic is light. Two pedestrians ahead cross midblock from the left to the right, moving through the ego lane and temporarily blocking the path. Two white vans are stopped along the right curb on the oncoming side, and their presence narrows the available space though they remain outside the ego lane. A No Parking sign and several bicycles line the right rail while additional pedestrians stay on the sidewalks.", "hazard_reasoning": "There are two pedestrians crossing the street in the middle of the road, from the left side to the right side. You should slow down because these pedestrians may enter your path unexpectedly and require you to yield to avoid a collision."}
{"id": "train_09154", "split": "train", "clip_key": "2020-0228-150133_080437_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "080437"}, "frames": ["2020-0228-150133_080437_movie_t-3.jpg", "2020-0228-150133_080437_movie_t-2.jpg", "2020-0228-150133_080437_movie_t-1.jpg", "2020-0228-150133_080437_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in the ego direction has smooth pavement and moderate, steadily moving traffic. The ego vehicle travels in the left lane as an overhead gantry spans the road and a posted speed limit of 50 is visible. A gray van directly ahead in the ego lane pulls away as the flow continues under a green signal further ahead. In the adjacent right lane, a black car slightly ahead proceeds straight at a similar pace, constraining an immediate lane change. Farther right, a blue flatbed truck moves steadily in its lane, keeping spacing tight but not encroaching.", "hazard_reasoning": "There is a gray van driving in front of, and away from the ego car, in the ego lane, because of a green traffic light ahead. Following this van helps ensure you clear the intersection safely before the signal changes."}
{"id": "train_09155", "split": "train", "clip_key": "titan_clip_539_000468_movie", "source": {"subset": "titan", "scenario": "clip_539", "frame": "000468"}, "frames": ["titan_clip_539_000468_movie_t-3.jpg", "titan_clip_539_000468_movie_t-2.jpg", "titan_clip_539_000468_movie_t-1.jpg", "titan_clip_539_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around pedestrian", "environment_perception": "An urban shopping street with a single undivided lane and smooth asphalt runs between storefronts, and no other vehicles are visible so progress is slow due to pedestrians. On the left edge close ahead, a woman in brown trousers, a white dust coat, and black shoes walks with her hand on the shoulder of a younger lady beside her, continuing forward within the ego side and slightly constraining the path. To the right front, a man steps out from the sidewalk into the roadway and walks diagonally toward the center, encroaching on the ego lane. Farther ahead, several pedestrians in light coats proceed along the middle of the street, one pulling a small cart, forming a moving queue that occupies the lane.", "hazard_reasoning": "There is a woman wearing a pair of brown trousers, a white dust coat, black shoes, putting a hand on the shoulder of another younger lady, walking on the left side of the road. The driver should carefully manoeuvre because the pedestrians are walking on the roadway and could enter the vehicle's path."}
{"id": "train_09156", "split": "train", "clip_key": "titan_clip_1114_000564_movie", "source": {"subset": "titan", "scenario": "clip_1114", "frame": "000564"}, "frames": ["titan_clip_1114_000564_movie_t-3.jpg", "titan_clip_1114_000564_movie_t-2.jpg", "titan_clip_1114_000564_movie_t-1.jpg", "titan_clip_1114_000564_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A narrow urban shopping street with brick paving has a single low-speed lane and no median, and traffic is light as the car proceeds straight. A small delivery truck is stopped along the left curb ahead, partly encroaching on the lane and slowing the approach. A pedestrian wearing a red T-shirt stands on the left beside this truck, attending the vehicle and close to the lane edge. Two other pedestrians are farther ahead near the center of the roadway, walking toward the right sidewalk within the lane. A marked crosswalk spans the street at a side junction ahead.", "hazard_reasoning": "There is a pedestrian wearing a red t-shirt, standing on the left side of the road, because they are attending their vehicle. The pedestrian may move into the travel lane unexpectedly, so the driver should carefully manoeuvre around them."}
{"id": "train_09157", "split": "train", "clip_key": "2020-0129-144857_035538_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "035538"}, "frames": ["2020-0129-144857_035538_movie_t-3.jpg", "2020-0129-144857_035538_movie_t-2.jpg", "2020-0129-144857_035538_movie_t-1.jpg", "2020-0129-144857_035538_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "An urban arterial runs under an elevated structure with two same-direction lanes and a guard-railed side lane to the right; the pavement is intact and traffic is heavy with a standing queue. A black van is stopped in the ego lane directly ahead because of congestion, holding the ego car. Farther ahead in the same lane, a white box truck waits at the head of the queue and constrains movement. In the adjacent left lane, a black sedan inches forward alongside the van, progressing slowly past the line and limiting space for lane changes. On the separated lane to the right, a few cars travel steadily past the queue. An overhead signal shows red.", "hazard_reasoning": "There is a black van stopped in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should stop to maintain a safe distance and avoid a collision."}
{"id": "train_09158", "split": "train", "clip_key": "2020-0129-105040_060184_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "060184"}, "frames": ["2020-0129-105040_060184_movie_t-3.jpg", "2020-0129-105040_060184_movie_t-2.jpg", "2020-0129-105040_060184_movie_t-1.jpg", "2020-0129-105040_060184_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrian crossing.", "environment_perception": "A narrow urban two-way street lined with shops comes into view as the ego-vehicle travels in the left lane toward a zebra crossing on smooth, dry pavement; traffic is light with no cars nearby. Ahead in the crosswalk, a pedestrian wearing a red top and black pants pushes a walker while crossing from left to right in front of the ego lane, directly constraining progress. On the left edge near the crosswalk, two pedestrians walk along the curb toward the camera and remain outside the lane. Parked bicycles line both sides and orange cones sit by a building on the right, but they do not intrude into the roadway.", "hazard_reasoning": "There is a pedestrian wearing a red shirt and black pants and crossing the street from the left side to the right side. The driver should yield because the pedestrian is actively crossing the road and has the right of way, requiring a speed reduction to avoid collision."}
{"id": "train_09159", "split": "train", "clip_key": "2020-0214-145407_044288_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "044288"}, "frames": ["2020-0214-145407_044288_movie_t-3.jpg", "2020-0214-145407_044288_movie_t-2.jpg", "2020-0214-145407_044288_movie_t-1.jpg", "2020-0214-145407_044288_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Yield to merging SUV.", "environment_perception": "An urban multilane arterial runs under elevated expressway structures, with the ego vehicle in a through lane approaching a signalized intersection on smooth, dry pavement amid moderate traffic. A black taxi directly ahead in the ego lane proceeds toward the crosswalk and eases off, setting the pace. To the right, a silver minivan in the adjacent lane travels slightly ahead in parallel without encroaching into the ego lane. On the left sidewalk, a pedestrian stands beside a bicycle at the corner, waiting. The traffic signal visible ahead shows green as vehicles continue through the junction.", "hazard_reasoning": "There is a black SUV changing lanes, from the left lane to the ego-lane. The driver should yield because the SUV may cut in abruptly and could cause a collision."}
{"id": "train_09160", "split": "train", "clip_key": "2020-0203-114632_056942_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "056942"}, "frames": ["2020-0203-114632_056942_movie_t-3.jpg", "2020-0203-114632_056942_movie_t-2.jpg", "2020-0203-114632_056942_movie_t-1.jpg", "2020-0203-114632_056942_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane road runs under an elevated structure with a guardrail on the left; pavement looks smooth and overall traffic is moderate, though the ego lane is halted near an intersection. A white and green bus is stopped directly ahead in the ego lane, waiting to turn left, so it blocks the lane and holds the ego vehicle. In the adjacent lane to the right, a white flatbed truck ahead continues straight through the intersection and pulls away. Farther right, several cars move straight across the junction, keeping same-direction traffic flowing. Pedestrians line the left sidewalk behind the barrier near the corner.", "hazard_reasoning": "A white and green bus is stopped in front of the ego car in the ego lane, because it is waiting to turn left. The driver must stop to avoid colliding with the stationary bus ahead."}
{"id": "train_09161", "split": "train", "clip_key": "titan_clip_1319_000186_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_1319_000186_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_1319_000186_movie_t-3_augB1.jpg", "titan_clip_1319_000186_movie_t-2_augB1.jpg", "titan_clip_1319_000186_movie_t-1_augB1.jpg", "titan_clip_1319_000186_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A dense urban shopping street has a single narrow lane with red-edged shoulders, no center divider, and smooth pavement; traffic is light with no moving vehicles visible. A pedestrian in front of the ego car, wearing a gray shirt and black pants, crosses the lane toward the right side midblock where there is no crosswalk, directly occupying the ego path. Several pedestrians walk ahead along the left sidewalk beside bollards, moving parallel to the lane and posing little interaction with the vehicle. Shops and utility poles line both sides, creating a constrained corridor.", "hazard_reasoning": "There is a pedestrian in front of the ego car, wearing a gray shirt and black pants, crossing to the right side of the road, because there is no crosswalk. Slow down to yield to the pedestrian crossing unexpectedly and avoid collision."}
{"id": "train_09162", "split": "train", "clip_key": "2020-0129-105040_047590_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "047590"}, "frames": ["2020-0129-105040_047590_movie_t-3.jpg", "2020-0129-105040_047590_movie_t-2.jpg", "2020-0129-105040_047590_movie_t-1.jpg", "2020-0129-105040_047590_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial runs beneath an elevated expressway with three same-direction lanes and smooth asphalt; traffic is light and flows steadily. A white van ahead in the ego lane continues straight and gradually pulls away because the lane in front of it is clear. Farther ahead in the center lane, a small white box truck travels at a steady pace, remaining outside the ego path but relevant if a lane change is planned. In the right lane, a silver car moves slightly ahead at a similar speed without encroaching. Guardrails and large bridge columns line the right edge of the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09163", "split": "train", "clip_key": "titan_clip_1135_000588_movie", "source": {"subset": "titan", "scenario": "clip_1135", "frame": "000588"}, "frames": ["titan_clip_1135_000588_movie_t-3.jpg", "titan_clip_1135_000588_movie_t-2.jpg", "titan_clip_1135_000588_movie_t-1.jpg", "titan_clip_1135_000588_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian walking on left side", "environment_perception": "A narrow urban commercial street with a single marked vehicle lane and no median runs between shopfronts; pavement is smooth and traffic is light. Far ahead, an oncoming small car approaches slowly near the center of the road, reducing available space for the ego vehicle. On the left edge close to the lane, a pedestrian wearing black pants and carrying a handbag walks toward the ego car, potentially entering its path. Several other pedestrians stand and stroll along the left storefronts and near the curb on the right, some edging near the roadway and tightening the corridor for the vehicle. No salient signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian wearing black pants, carrying a handbag, and walking on the left side of the road, towards the ego car. They could step into the lane unexpectedly, so the driver should be aware of their approach and monitor their movement."}
{"id": "train_09164", "split": "train", "clip_key": "titan_clip_660_000156_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_660_000156_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_660_000156_movie_t-3_augB1.jpg", "titan_clip_660_000156_movie_t-2_augB1.jpg", "titan_clip_660_000156_movie_t-1_augB1.jpg", "titan_clip_660_000156_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban commercial street with a single narrow lane and no median runs between shopfronts; the pavement is smooth and vehicle traffic is light. Cones line both curbs, narrowing the usable lane. Two pedestrians wearing white shirts and carrying handbags walk ahead in the center of the lane away from the ego vehicle, occupying its path and constraining its pace. Additional pedestrians on the right edge walk along and pause by storefronts, some near the roadway and may step into the lane. A small white van farther ahead travels in the same direction at low speed, providing a distant moving cue. No traffic signals or posted speed signs are evident.", "hazard_reasoning": "There are two pedestrians wearing white shirts, carrying handbags, walking in front of the ego car, away from the ego car. The driver should stop because pedestrians are directly ahead and may cross unpredictably."}
{"id": "train_09165", "split": "train", "clip_key": "2020-0131-103016_011632_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-103016_011632_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-103016_011632_movie_t-3_augB1.jpg", "2020-0131-103016_011632_movie_t-2_augB1.jpg", "2020-0131-103016_011632_movie_t-1_augB1.jpg", "2020-0131-103016_011632_movie_t_augB1.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with two lanes in the ego direction runs between mid-rise buildings, separated from oncoming lanes on the right by double white lines; the pavement is smooth and traffic is moderate. A black motorcycle ahead to the left changes right into the ego lane to pass a stationary vehicle in the left curb lane, briefly entering the ego path. Farther ahead, a white box truck continues straight in the ego lane and governs the pace. Oncoming cars to the right move steadily without interacting. Overhead round signs and large lane markings indicate a 40 speed limit.", "hazard_reasoning": "There is a black motorbike in front of the ego car, changing lanes from the left lane to the ego lane, because of a vehicle parked in the left lane. The motorbike's unexpected lane change could require you to slow down to avoid a collision."}
{"id": "train_09166", "split": "train", "clip_key": "2020-0226-140503_066199_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "066199"}, "frames": ["2020-0226-140503_066199_movie_t-3.jpg", "2020-0226-140503_066199_movie_t-2.jpg", "2020-0226-140503_066199_movie_t-1.jpg", "2020-0226-140503_066199_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Yield to pedestrians", "environment_perception": "An urban downtown intersection is seen from a stopped ego-vehicle at a signalized, multi-lane road with no median; the dry pavement is well marked with a red-painted approach, and cross traffic flows moderately. On the near left curb, three pedestrians wearing black jackets, one carrying a white bag, wait to cross at the marked crosswalk. Ahead, a silver van proceeds left to right straight through the intersection across the ego path. Slightly right of center, a black car turns right within the junction and continues away past the far crosswalk. The signal facing the ego-vehicle shows red, and the nearby pedestrian signal displays a red standing figure.", "hazard_reasoning": "There are three pedestrians wearing black jackets, one of whom is carrying a white bag, waiting to cross the street at a marked crosswalk. The driver should yield because these pedestrians may step onto the road as the signal changes."}
{"id": "train_09167", "split": "train", "clip_key": "titan_clip_1381_000072_movie", "source": {"subset": "titan", "scenario": "clip_1381", "frame": "000072"}, "frames": ["titan_clip_1381_000072_movie_t-3.jpg", "titan_clip_1381_000072_movie_t-2.jpg", "titan_clip_1381_000072_movie_t-1.jpg", "titan_clip_1381_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban shopping street with a single narrow undivided lane and smooth pavement; traffic is light and slow. Ahead in the center of the lane, a pedestrian in a blue T-shirt pushes a trolley away from the ego vehicle along the middle of the road, using it because the street lacks a sidewalk and remaining in the path. Farther ahead on the right edge, a white van is pulled over and barely moving, narrowing the lane. Next to the van on the right, another pedestrian walks along the curb and may step into the lane in the constrained space.", "hazard_reasoning": "There is a pedestrian wearing a blue t-shirt, pushing a trolley in the middle of the road, away from the ego car, because there is no sidewalk. The pedestrian has moved into the driving lane and may collide with the ego-vehicle, so the driver should slow down."}
{"id": "train_09168", "split": "train", "clip_key": "titan_clip_589_000258_movie", "source": {"subset": "titan", "scenario": "clip_589", "frame": "000258"}, "frames": ["titan_clip_589_000258_movie_t-3.jpg", "titan_clip_589_000258_movie_t-2.jpg", "titan_clip_589_000258_movie_t-1.jpg", "titan_clip_589_000258_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of the pedestrian", "environment_perception": "An urban two-way street with one lane each direction shows smooth pavement and light traffic; numerous loading vans line the right curb, narrowing the roadway. A small white van stands ahead along the left edge of the ego lane, reducing usable width and influencing the ego's pace. On the right, a cyclist moves forward beside the parked vans and may drift toward the center as space varies. Also on the right, a pedestrian wearing black pants carries a box and walks away from the ego along the curb amid the loading activity.", "hazard_reasoning": "There is a pedestrian wearing black pants, carrying a box, walking on the right side of the road, away from the ego car. Because they are near parked vehicles blocking visibility, the driver should stay aware to prevent a sudden entry into the lane."}
{"id": "train_09169", "split": "train", "clip_key": "titan_clip_1153_000504_movie", "source": {"subset": "titan", "scenario": "clip_1153", "frame": "000504"}, "frames": ["titan_clip_1153_000504_movie_t-3.jpg", "titan_clip_1153_000504_movie_t-2.jpg", "titan_clip_1153_000504_movie_t-1.jpg", "titan_clip_1153_000504_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban shopping street with a narrow single lane paved with bricks has no divider and smooth pavement; traffic is light with no moving vehicles. Ahead in the center of the lane, a pedestrian with a backpack walks away within the travel path. On the right, a pedestrian in a blue shirt walks away along the curb, skirting a parked truck that narrows the lane because it occupies part of the roadway. A medium truck remains stopped at the right curb and a bicycle is parked nearby, reducing clearance along that side.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt and walking away from the ego car on the right side of the road because of the parked vehicle. The parked truck obstructs the driver's view and this pedestrian may step into the roadway unexpectedly, so the driver must adjust their path accordingly."}
{"id": "train_09170", "split": "train", "clip_key": "titan_clip_1171_000402_movie", "source": {"subset": "titan", "scenario": "clip_1171", "frame": "000402"}, "frames": ["titan_clip_1171_000402_movie_t-3.jpg", "titan_clip_1171_000402_movie_t-2.jpg", "titan_clip_1171_000402_movie_t-1.jpg", "titan_clip_1171_000402_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the parked truck.", "environment_perception": "A narrow urban commercial street with one shared lane runs between shopfronts, with no median and smooth pavement; vehicle traffic is light and slow. A white mini-truck is parked along the left curb ahead of the ego-car, partially jutting into the lane and narrowing the passage. Two pedestrians are ahead near the center-right of the roadway, walking along the lane and potentially occupying the ego path. Additional pedestrians are farther up the street near storefronts on both sides, moving casually and occasionally stepping near the roadway. Restaurant boards and signs on the right edge protrude into the carriageway, creating minor roadside obstacles.", "hazard_reasoning": "There is a white truck parked on the left side of the road in front of the ego-car. The parked truck partially obstructs the view of the sidewalk and pedestrians, so the driver should carefully manoeuvre around it."}
{"id": "train_09171", "split": "train", "clip_key": "2020-0227-104226_052763_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "052763"}, "frames": ["2020-0227-104226_052763_movie_t-3.jpg", "2020-0227-104226_052763_movie_t-2.jpg", "2020-0227-104226_052763_movie_t-1.jpg", "2020-0227-104226_052763_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane per direction, divided by a solid yellow centerline, runs between mid-rise buildings; the pavement looks dry and smooth with light traffic. A silver van drives ahead in the ego lane directly in front of the ego car, continuing straight at a steady pace and setting the speed. A few oncoming cars travel in the opposite lane to the right, proceeding straight with ample separation. Parked vehicles line the curbs and metal railings edge the sidewalks, but nothing encroaches into the travel lanes.", "hazard_reasoning": "A silver van is driving in front of the ego car in the ego lane. Sudden braking by the van could catch the driver off guard, so it is important to follow the vehicle ahead at a safe distance to maintain reaction time."}
{"id": "train_09172", "split": "train", "clip_key": "titan_clip_756_000048_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_756_000048_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_756_000048_movie_t-3_augB1.jpg", "titan_clip_756_000048_movie_t-2_augB1.jpg", "titan_clip_756_000048_movie_t-1_augB1.jpg", "titan_clip_756_000048_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "An urban intersection on a narrow side street without a center divider is shown, the pavement slightly worn and marked with zebra crossings, and overall vehicle traffic appears light. A pedestrian wearing a brown backpack walks away from the ego vehicle straight ahead in the lane, remaining in the ego path. Two other pedestrians cross from right to left on the crosswalk ahead, moving across the ego lane and passing close to the camera. Another person stands near the left curb by the corner. A do-not-enter sign marks the left-side branch, and several orange traffic cones line the left edge near the crosswalk.", "hazard_reasoning": "There is a pedestrian wearing a brown backpack, walking away from the ego car, in front of the ego car. The driver should be aware of the pedestrian moving ahead to maintain a safe distance and avoid potential collision."}
{"id": "train_09173", "split": "train", "clip_key": "2020-0225-102455_076570_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "076570"}, "frames": ["2020-0225-102455_076570_movie_t-3.jpg", "2020-0225-102455_076570_movie_t-2.jpg", "2020-0225-102455_076570_movie_t-1.jpg", "2020-0225-102455_076570_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with four same-direction lanes and painted dividers approaches a large signalized intersection; the pavement is smooth and traffic is moderate and moving. A white van directly ahead in the ego lane accelerates away through the junction as the signal shows green. A small flatbed truck in the lane to the right continues straight at a similar pace, limiting any rightward merge. A scooter on the far right lane overtakes and moves forward beside the truck, close to the ego vehicle's right side and potentially entering gaps ahead. A black sedan in the left lane travels parallel without affecting the ego path.", "hazard_reasoning": "There is a white van driving in the ego lane, away from the ego car, because of a green traffic light. The driver needs to follow the vehicle ahead to maintain consistent traffic flow and safe following distance at the intersection."}
{"id": "train_09174", "split": "train", "clip_key": "2020-0228-150133_075076_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "075076"}, "frames": ["2020-0228-150133_075076_movie_t-3.jpg", "2020-0228-150133_075076_movie_t-2.jpg", "2020-0228-150133_075076_movie_t-1.jpg", "2020-0228-150133_075076_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with multiple same-direction lanes is divided by a white guardrail from a curbside service lane on the right; the pavement is dry and intact, and traffic is light to moderate moving steadily. A white sedan ahead in the ego lane cruises at a constant pace and sets the gap. On the service lane to the right, a bus and several cars travel parallel and briefly slow near roadside businesses but remain separated from the ego path. On the left sidewalk, two cyclists ride forward beside storefronts without entering the roadway. An overhead green guide sign indicates upcoming lane choices for destinations.", "hazard_reasoning": "No caption provided. No hazards are present, so the driver can continue driving normally."}
{"id": "train_09175", "split": "train", "clip_key": "titan_clip_1247_000582_movie", "source": {"subset": "titan", "scenario": "clip_1247", "frame": "000582"}, "frames": ["titan_clip_1247_000582_movie_t-3.jpg", "titan_clip_1247_000582_movie_t-2.jpg", "titan_clip_1247_000582_movie_t-1.jpg", "titan_clip_1247_000582_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around pedestrian carefully", "environment_perception": "A narrow urban side street with a single shared lane and no median runs between close storefronts; the dry asphalt shows patches and traffic is light with no vehicles. On the right side ahead, a pedestrian in a blue shirt pushes a loaded handcart toward the ego vehicle along the lane edge, constraining the available space. Slightly beyond, another person stands at the right curb by a shop, close to the roadway and not moving. Farther ahead, a few pedestrians walk along the street, well away from the ego path.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, pushing a cart on the right side of the road, towards the ego car. The pedestrian may drift into the lane unexpectedly on the narrow street, so manoeuvre around the pedestrian carefully to avoid collision."}
{"id": "train_09176", "split": "train", "clip_key": "2020-0210-101957_068729_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "068729"}, "frames": ["2020-0210-101957_068729_movie_t-3.jpg", "2020-0210-101957_068729_movie_t-2.jpg", "2020-0210-101957_068729_movie_t-1.jpg", "2020-0210-101957_068729_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban, narrow two-way street with buildings tight to the curbs has good pavement and slow, congested traffic. Ahead in the left ego lane, a white van slows and then creeps because of a queue, constraining the ego vehicle's pace. In the opposing right lane, a silver car and a large truck inch forward toward the camera, remaining in their lane and passing close. At the left edge near the crosswalk, a cyclist rides slowly along the curb toward the intersection without entering the roadway. A roadside sign posts a 30 km/h speed limit.", "hazard_reasoning": "There is a white van slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should reduce speed to maintain a safe following distance and adapt to the slowing traffic."}
{"id": "train_09177", "split": "train", "clip_key": "2020-0131-135401_079705_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "079705"}, "frames": ["2020-0131-135401_079705_movie_t-3.jpg", "2020-0131-135401_079705_movie_t-2.jpg", "2020-0131-135401_079705_movie_t-1.jpg", "2020-0131-135401_079705_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban elevated divided road with two lanes in the ego direction climbs gently, bounded by concrete barriers and a central median; the pavement is dry and traffic is moderate and steady. A white van drives ahead in the ego lane, moving uphill at a constant pace and effectively setting the ego vehicle's speed. A yellow hatchback in the adjacent left lane keeps pace near the ego while proceeding uphill. On the parallel carriageway to the right, oncoming cars and small trucks move steadily in the opposite direction behind the median and do not interact.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane. The van may slow or stop unexpectedly; following it at a safe distance will give the driver time to react."}
{"id": "train_09178", "split": "train", "clip_key": "2020-0205-103411_073318_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "073318"}, "frames": ["2020-0205-103411_073318_movie_t-3.jpg", "2020-0205-103411_073318_movie_t-2.jpg", "2020-0205-103411_073318_movie_t-1.jpg", "2020-0205-103411_073318_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial with at least three same-direction lanes runs between tall buildings; the pavement is dry and in good condition, and traffic flows at a moderate, steady pace. Ahead in the ego lane, a white truck drives away from the camera, continuing straight and effectively setting the ego vehicle's pace. In the adjacent lanes to the right, several cars and a larger truck travel parallel at similar speed, remaining in their lanes and not encroaching on the ego path. Along the left curb ahead, a white box truck stands near the edge of the roadway, outside the travel lane but close to it.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09179", "split": "train", "clip_key": "2020-0228-150133_016945_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "016945"}, "frames": ["2020-0228-150133_016945_movie_t-3.jpg", "2020-0228-150133_016945_movie_t-2.jpg", "2020-0228-150133_016945_movie_t-1.jpg", "2020-0228-150133_016945_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with one narrow lane per direction and no physical median shows intact pavement and heavy, queued traffic. The ego vehicle proceeds in the left lane. Directly ahead, a silver van in the ego lane is stopped due to congestion, holding the ego vehicle. Farther ahead in the same lane, a large bus is also stopped, contributing to the line of vehicles. On the right near a corner, several pedestrians walk along the sidewalk and gather by the crosswalk, close to the roadway and relevant as they may enter the crossing in front of the queue. A 40 speed limit sign stands on a pole to the left, and shops with guardrails line the roadside.", "hazard_reasoning": "A silver van stopped in front of the ego car, in the ego lane, due to traffic congestion ahead. The driver should stop immediately because continuing forward risks colliding with the stationary van in the congested traffic."}
{"id": "train_09180", "split": "train", "clip_key": "titan_clip_1101_000294_movie", "source": {"subset": "titan", "scenario": "clip_1101", "frame": "000294"}, "frames": ["titan_clip_1101_000294_movie_t-3.jpg", "titan_clip_1101_000294_movie_t-2.jpg", "titan_clip_1101_000294_movie_t-1.jpg", "titan_clip_1101_000294_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be aware of pedestrian ahead", "environment_perception": "A narrow urban shopping street lacks lane markings or a median, with tiled pavement in good condition; there is no motor traffic and pedestrian flow is moderate. Several pedestrians ahead in the center walk away within the travel path, effectively occupying the lane. On the left side, a pedestrian carrying a handbag walks away from the ego car near the storefronts. Farther ahead near the middle, another pedestrian approaches toward the camera. A-frame shop signs, product racks, and a few parked bicycles line the edges and encroach slightly into the roadway, narrowing the available space.", "hazard_reasoning": "There is a pedestrian carrying a handbag and walking away from the ego car, on the left side of the road. The driver should be aware of this pedestrian to avoid potential collision as they might change direction or slow unexpectedly."}
{"id": "train_09181", "split": "train", "clip_key": "titan_clip_654_000354_movie", "source": {"subset": "titan", "scenario": "clip_654", "frame": "000354"}, "frames": ["titan_clip_654_000354_movie_t-3.jpg", "titan_clip_654_000354_movie_t-2.jpg", "titan_clip_654_000354_movie_t-1.jpg", "titan_clip_654_000354_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "A narrow urban commercial street lacks a centerline and functions as a two-way road; the asphalt looks smooth and traffic moves slowly amid heavy pedestrian activity. An oncoming silver van ahead in the middle of the roadway inches forward through the crowd, constraining the ego vehicle's progress. Two pedestrians further ahead cross from the right toward the left across the ego path, causing additional slowing. On the left edge near the ego vehicle, a pedestrian wearing a white T-shirt, looking at their phone, walks away from the ego car along the roadside while staying close to the curb. A white van protrudes from a driveway on the left, slightly narrowing the lane and adding to the congestion.", "hazard_reasoning": "A pedestrian wearing a white t-shirt and looking into their phone, is walking on the left side of the road, away from the ego car. The driver should manoeuvre carefully around this pedestrian to avoid collision."}
{"id": "train_09182", "split": "train", "clip_key": "2020-0129-105040_048577_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "048577"}, "frames": ["2020-0129-105040_048577_movie_t-3.jpg", "2020-0129-105040_048577_movie_t-2.jpg", "2020-0129-105040_048577_movie_t-1.jpg", "2020-0129-105040_048577_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial under an elevated expressway carries three lanes in the ego direction, with a curb on the left and a guardrail on the right; the pavement is dry and smooth, and traffic is light. Several cars are far ahead across the center and right lanes, traveling straight in the same direction and keeping ample distance from the ego vehicle. A white car ahead in the left lane also proceeds straight, remaining well ahead of the ego path. Overhead blue guide signs indicate lane destinations, with no traffic signals or posted speeds visible. The roadway is clear of obstacles, and continuous barriers line the right edge.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09183", "split": "train", "clip_key": "titan_clip_1248_000114_movie", "source": {"subset": "titan", "scenario": "clip_1248", "frame": "000114"}, "frames": ["titan_clip_1248_000114_movie_t-3.jpg", "titan_clip_1248_000114_movie_t-2.jpg", "titan_clip_1248_000114_movie_t-1.jpg", "titan_clip_1248_000114_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Be cautious of the pedestrian attending a vehicle.", "environment_perception": "A narrow urban commercial street with one undivided lane ahead shows worn, patched pavement and light traffic as the vehicle proceeds slowly past storefronts and parking bays. On the left edge, a pedestrian in a blue shirt stands beside a stopped truck, attending the vehicle and staying at the curb. Ahead on the right, two pedestrians walk along the sidewalk beside bollards, parallel to the ego path but outside the carriageway. Farther ahead in the same direction, a small white van moves along the lane at low speed without constraining the ego vehicle. Parked vans fill a surface lot to the right, and advertising boards line the roadside.", "hazard_reasoning": "There is a pedestrian wearing a blue shirt, standing on the left side of the road, away from the ego car, because they are attending their vehicle. The driver should be cautious as the pedestrian may step onto the road when distracted."}
{"id": "train_09184", "split": "train", "clip_key": "2020-0205-103411_113635_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "113635"}, "frames": ["2020-0205-103411_113635_movie_t-3.jpg", "2020-0205-103411_113635_movie_t-2.jpg", "2020-0205-103411_113635_movie_t-1.jpg", "2020-0205-103411_113635_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane road runs straight between mid-rise buildings, with two lanes in the ego direction on smooth asphalt and light to moderate, steadily moving traffic. A white van ahead in the ego lane moves away gradually because of traffic progressing in front of it. In the adjacent right lane, a white truck slightly ahead travels in the same direction at a similar pace, constraining any immediate overtaking space. Along the far right curb several white vans are parked, while temporary cones and railings line the left sidewalk without encroaching on the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09185", "split": "train", "clip_key": "2020-0210-101957_080654_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "080654"}, "frames": ["2020-0210-101957_080654_movie_t-3.jpg", "2020-0210-101957_080654_movie_t-2.jpg", "2020-0210-101957_080654_movie_t-1.jpg", "2020-0210-101957_080654_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with one lane each direction, separated by a solid yellow centerline, shows light traffic and clean pavement. The approach leads to a signalized intersection with a zebra crossing. A brown construction vehicle directly ahead in the ego lane proceeds slowly, constraining the ego vehicle's pace. A white car in the opposing lane approaches through the intersection and continues past. On the right, a white car waits at a side street near the intersection, poised to enter when there is a gap.", "hazard_reasoning": "There is a brown construction vehicle driving in the ego lane. It may slow or stop unexpectedly, so maintain a safe distance by following the vehicle ahead."}
{"id": "train_09186", "split": "train", "clip_key": "2020-0220-151845_057076_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "057076"}, "frames": ["2020-0220-151845_057076_movie_t-3.jpg", "2020-0220-151845_057076_movie_t-2.jpg", "2020-0220-151845_057076_movie_t-1.jpg", "2020-0220-151845_057076_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "An urban multi-lane arterial runs under an elevated expressway, with a guardrail on the left and a concrete wall on the right; the dry pavement and bunching vehicles indicate moderate, slowing traffic in the same direction. Ahead in the ego lane, a flatbed truck carrying a tarped load slows due to congestion forming ahead, so it directly governs the ego car's speed. In the adjacent right lane, a light blue kei wagon runs slightly ahead at a similar slow pace, limiting opportunities to pass. Farther ahead in the right lane, another small van also decelerates with the queue.", "hazard_reasoning": "There is a pink truck slowing in front of the ego car, because of traffic congestion ahead, in the ego lane. You should slow down to maintain a safe distance and adapt to the reduced speed of traffic ahead."}
{"id": "train_09187", "split": "train", "clip_key": "2020-0214-145407_046447_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "046447"}, "frames": ["2020-0214-145407_046447_movie_t-3.jpg", "2020-0214-145407_046447_movie_t-2.jpg", "2020-0214-145407_046447_movie_t-1.jpg", "2020-0214-145407_046447_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid rear-end collision.", "environment_perception": "An urban signalized intersection with a two-lane left-side approach, smooth pavement, and no median has moderate traffic queued at the stop line. The black sedan directly ahead in the ego lane is stopped because the light is red, holding the ego vehicle at the crosswalk. A pedestrian on the right walks leftward across the marked crossing in front of the queue, occupying the ego path. Cross-traffic flows through the intersection ahead in both directions, including cars and vans, proceeding under their green and keeping the waiting lanes stationary.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, in front of the ego car, because of a red traffic light. The driver must stop to avoid rear-ending the stopped vehicle and comply with the red signal."}
{"id": "train_09188", "split": "train", "clip_key": "2020-0207-151349_019323_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "019323"}, "frames": ["2020-0207-151349_019323_movie_t-3.jpg", "2020-0207-151349_019323_movie_t-2.jpg", "2020-0207-151349_019323_movie_t-1.jpg", "2020-0207-151349_019323_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth pavement carries moderate, slow-moving same-direction traffic under strong sun glare, with railings along the left sidewalk and a raised structure on the right. A white box truck directly ahead in the ego lane is stopped and constrains the ego vehicle's progress. To the right, a dark SUV in the adjacent lane creeps forward and overtakes while continuing straight. In the left lane slightly ahead, a small white van proceeds slowly alongside without merging. A cyclist rides along the fenced left sidewalk in the same direction, remaining separated from the roadway.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, in the ego lane. The driver should stop because a halted vehicle directly ahead poses a collision risk if the ego vehicle continues moving at its current speed."}
{"id": "train_09189", "split": "train", "clip_key": "titan_clip_554_000444_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_554_000444_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_554_000444_movie_t-3_augB1.jpg", "titan_clip_554_000444_movie_t-2_augB1.jpg", "titan_clip_554_000444_movie_t-1_augB1.jpg", "titan_clip_554_000444_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban side street with smooth pavement and a single left-side travel lane passes a park and office buildings; traffic is light under bright sun. A black van stands ahead at the left curb, partially intruding into the ego lane and slowing the approach. A pedestrian wearing a cap and red shirt crosses mid-block from the van toward the right side of the road in front of the ego path, briefly occupying the lane. Two other pedestrians move along the left sidewalk near the hedge, remaining off the roadway. The right side shows a wide hatched area and a bus shelter, with no oncoming vehicles or signals clearly visible.", "hazard_reasoning": "There is a pedestrian wearing a cap and red shirt, crossing in the middle of the road to the right side. Because the pedestrian is entering the driver's path without traffic controls, the driver must stop to avoid a collision."}
{"id": "train_09190", "split": "train", "clip_key": "2020-0214-145407_011870_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "011870"}, "frames": ["2020-0214-145407_011870_movie_t-3.jpg", "2020-0214-145407_011870_movie_t-2.jpg", "2020-0214-145407_011870_movie_t-1.jpg", "2020-0214-145407_011870_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way arterial with two lanes in each direction runs between mid-rise buildings toward a signalized intersection; the patched, slightly wet pavement and cones with barricades on the right mark a roadside work zone, and traffic flows moderately in both directions. A gray van directly ahead in the ego lane moves straight and gently accelerates through the green light, setting the ego car's pace. A white car slightly ahead in the adjacent right lane continues straight at a similar speed, remaining parallel without impeding. Pedestrians on the sidewalks near the crosswalk wait at the curb. The overhead signal shows green for the ego direction.", "hazard_reasoning": "There is a gray van driving in front of the ego car in the ego lane, because of the green traffic light. Construction barriers partially obstruct the right side, reducing visibility and requiring the driver to start moving with caution."}
{"id": "train_09191", "split": "train", "clip_key": "2020-0213-143552_000045_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "000045"}, "frames": ["2020-0213-143552_000045_movie_t-3.jpg", "2020-0213-143552_000045_movie_t-2.jpg", "2020-0213-143552_000045_movie_t-1.jpg", "2020-0213-143552_000045_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way street with good pavement is lined by mid-rise buildings, and traffic is moderate but stopped at an intersection. A traffic signal ahead shows red, holding the flow in the leftmost same-direction lane. A white hatchback is directly ahead in the ego lane, stationary because of the red light and blocking the path. Farther ahead in the same lane, a red box truck also waits at the light, setting the pace for the queue. In the adjacent right lane, two scooters near the stop line creep forward as they prepare to go on green, while a small white pickup ahead right moves slowly in its lane without affecting the ego car.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. Stop to avoid a collision with the halted vehicle at the red light."}
{"id": "train_09192", "split": "train", "clip_key": "2020-0207-101955_063745_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "063745"}, "frames": ["2020-0207-101955_063745_movie_t-3.jpg", "2020-0207-101955_063745_movie_t-2.jpg", "2020-0207-101955_063745_movie_t-1.jpg", "2020-0207-101955_063745_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two same-direction lanes and a raised median on the right has smooth pavement and moderate, steadily moving traffic. A white hatchback directly ahead in the ego lane accelerates away, briefly governing the ego vehicle's pace. To the left, a blue utility truck travels alongside at a slower speed in the adjacent lane, restricting an immediate lane change. On the far right beyond the median, a motorcycle and several cars approach as oncoming traffic without interacting with the ego lane. An overhead gantry with signals and signs spans the roadway, and a left-pointing merge arrow near the right edge indicates a lane tapering into the ego lane ahead.", "hazard_reasoning": "There is a white hatchback accelerating in the ego lane, in front of the ego car. The driver should start moving promptly to follow through on the green light and avoid delaying traffic."}
{"id": "train_09193", "split": "train", "clip_key": "titan_clip_296_000024_movie", "source": {"subset": "titan", "scenario": "clip_296", "frame": "000024"}, "frames": ["titan_clip_296_000024_movie_t-3.jpg", "titan_clip_296_000024_movie_t-2.jpg", "titan_clip_296_000024_movie_t-1.jpg", "titan_clip_296_000024_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Stop immediately for the crossing cyclist", "environment_perception": "An urban residential area with narrow two-way local roads and no center line forms an unsignalized T-junction; the ego car pauses at the stem on dry pavement and traffic is light. A cyclist wearing a white shirt rides across immediately ahead from the left side to the right side of the cross street at a steady pace, occupying the path and requiring the ego to wait. A stop line and T marking are visible on the ego approach, with no traffic signals. Parked vehicles along the right-side building and close building corners limit sight into the intersection.", "hazard_reasoning": "There is a cyclist wearing a white shirt, cycling in front of the ego car, from the left side to the right side. Stopping is necessary to avoid colliding with the crossing cyclist."}
{"id": "train_09194", "split": "train", "clip_key": "2020-0129-105040_044008_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "044008"}, "frames": ["2020-0129-105040_044008_movie_t-3.jpg", "2020-0129-105040_044008_movie_t-2.jpg", "2020-0129-105040_044008_movie_t-1.jpg", "2020-0129-105040_044008_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane divided arterial runs under an elevated structure, with three same-direction lanes, a right-side guardrail, dry pavement, and heavy stop-and-go flow at a signal. Directly ahead, a silver car is stopped in the ego lane for the red light, holding our position. To the left, a blue truck alongside sits in its lane, limiting any chance to merge. In the middle lane ahead-left, a white van queues and remains stationary. The overhead traffic signal ahead shows red.", "hazard_reasoning": "There is a silver SUV stopped in the ego lane, because of the red traffic light. You must stop to avoid a rear-end collision at the red light."}
{"id": "train_09195", "split": "train", "clip_key": "titan_clip_451_000204_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_451_000204_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_451_000204_movie_t-3_augB1.jpg", "titan_clip_451_000204_movie_t-2_augB1.jpg", "titan_clip_451_000204_movie_t-1_augB1.jpg", "titan_clip_451_000204_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Stop immediately.", "environment_perception": "An urban two-way street with one narrow lane per direction, no median, and smooth pavement comes into view, and traffic is light as the ego vehicle proceeds along the left lane past shops. A black minivan ahead near the left curb moves slowly in the ego lane and constrains the pace. A pedestrian in a black shirt and black pants steps off the right sidewalk and crosses from right to left toward the ego lane, potentially entering the path. Farther ahead, two more pedestrians continue crossing the roadway leftward in the lane ahead. A 30 km/h speed-limit sign is visible on the left.", "hazard_reasoning": "There is a pedestrian in black shirt and black pants, crossing the street from the right side to the left side of the road. The driver should stop to yield right of way and avoid colliding with the pedestrian."}
{"id": "train_09196", "split": "train", "clip_key": "titan_clip_412_000072_movie", "source": {"subset": "titan", "scenario": "clip_412", "frame": "000072"}, "frames": ["titan_clip_412_000072_movie_t-3.jpg", "titan_clip_412_000072_movie_t-2.jpg", "titan_clip_412_000072_movie_t-1.jpg", "titan_clip_412_000072_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A narrow urban street with a single travel lane and no median is shown, the pavement dry and traffic light. The ego-vehicle approaches a zebra crosswalk mid-block. A woman wearing a black dress and carrying an umbrella crosses from left to right on the crosswalk directly ahead, so the ego vehicle waits. A white box truck stands ahead along the left side in the ego lane, partly blocking the path and constraining speed. On the right, an oncoming bicyclist rides toward the crosswalk in the opposite lane while keeping to the curb. A pedestrian-crossing sign and a no-parking sign are visible at the roadside.", "hazard_reasoning": "There is a woman wearing a black dress, carrying an umbrella, and crossing the street on a pedestrian crosswalk, from the left side to the right side. The driver should stop because she is in the vehicle's path and must be given right of way."}
{"id": "train_09197", "split": "train", "clip_key": "2020-0218-103119_009604_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "009604"}, "frames": ["2020-0218-103119_009604_movie_t-3.jpg", "2020-0218-103119_009604_movie_t-2.jpg", "2020-0218-103119_009604_movie_t-1.jpg", "2020-0218-103119_009604_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban street with a single narrow lane approaches a small intersection; the pavement looks smooth and traffic is light. A white box truck ahead in the ego lane is stopped at the intersection with its right turn signal flashing, waiting to turn right and holding up the ego vehicle. On the left curb just behind the truck, a pedestrian stands next to a pole at the edge of the green bike lane, close to the carriageway and potentially entering the path. Parked bicycles line the right sidewalk, and no other moving vehicles are visible.", "hazard_reasoning": "There is a white truck stopped in the ego lane because it is indicating and waiting to turn right at the intersection ahead. The driver should stop to avoid colliding with the stationary truck and to anticipate its turn."}
{"id": "train_09198", "split": "train", "clip_key": "titan_clip_237_000186_movie", "source": {"subset": "titan", "scenario": "clip_237", "frame": "000186"}, "frames": ["titan_clip_237_000186_movie_t-3.jpg", "titan_clip_237_000186_movie_t-2.jpg", "titan_clip_237_000186_movie_t-1.jpg", "titan_clip_237_000186_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban backstreet with a single undivided lane runs between tall buildings; the pavement looks smooth and traffic is light with mostly roadside activity. On the left edge near the ego vehicle, a man in a white shirt carrying a coat walks toward the car along the curb, close to the travel lane. Ahead near the center-right, a small white van is stopped by the curb, narrowing the passage. On the right, a person stands beside stacked crates and handcarts outside a shop, remaining at the edge. Farther ahead a few pedestrians walk along both sides near the distant junction. Bicycles are parked on the left, and storefront items encroach slightly into the roadway.", "hazard_reasoning": "There is a man wearing a white shirt, carrying a coat, and walking on the left side of the road towards the ego-car. This pedestrian is close to the road and may step into the lane unexpectedly, so the driver should slow down to avoid a potential collision."}
{"id": "train_09199", "split": "train", "clip_key": "2020-0127-132751_047272_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "047272"}, "frames": ["2020-0127-132751_047272_movie_t-3.jpg", "2020-0127-132751_047272_movie_t-2.jpg", "2020-0127-132751_047272_movie_t-1.jpg", "2020-0127-132751_047272_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with two lanes in each direction runs slightly uphill toward a bridge, separated by a metal guardrail median; the asphalt looks dry and intact, and traffic moves at a moderate, steady flow. Ahead in the ego lane, a white sedan continues straight at a constant speed, setting the ego vehicle's pace. In the left lane a little farther ahead, a small box truck proceeds straight toward the rise, remaining parallel and limiting easy lane changes. To the right beyond the median, several oncoming cars, including a silver minivan, travel toward the camera in their lanes without interacting with the ego path. No distinctive signals or posted speeds are clearly visible.", "hazard_reasoning": "No hazards are apparent in the scene; the road conditions are normal and traffic flows smoothly, so maintain standard driving."}
{"id": "train_09200", "split": "train", "clip_key": "2020-0218-103119_025949_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "025949"}, "frames": ["2020-0218-103119_025949_movie_t-3.jpg", "2020-0218-103119_025949_movie_t-2.jpg", "2020-0218-103119_025949_movie_t-1.jpg", "2020-0218-103119_025949_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with smooth pavement and a row of orange bollards forming a narrow divider to the right; traffic is light to moderate and begins to flow. Directly ahead, a white box truck in the ego lane accelerates as traffic starts moving forward, setting the ego vehicle's pace. Blue directional boards are visible in the distance, and no-stopping signs stand on the left. Orange barricades line a small work area along the left sidewalk.", "hazard_reasoning": "There is a white truck accelerating in the ego lane, because traffic has started moving forward. The driver needs to start moving to maintain traffic flow and avoid delaying following vehicles."}
{"id": "train_09201", "split": "train", "clip_key": "2020-0204-150838_056167_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "056167"}, "frames": ["2020-0204-150838_056167_movie_t-3.jpg", "2020-0204-150838_056167_movie_t-2.jpg", "2020-0204-150838_056167_movie_t-1.jpg", "2020-0204-150838_056167_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided roadway runs under elevated expressway ramps with three same-direction lanes, clear pavement, and light traffic. A gray coach bus ahead in the ego lane drives away from the camera, and the ego car follows at its pace. Farther ahead in the middle lane, a white truck continues straight without interacting with the ego lane. The left edge shows a striped gore and a short red-paved shoulder separated by bollards, while guardrails line the right side. A blue directional sign with upward arrows appears roadside, and no signals or unusual hazards are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09202", "split": "train", "clip_key": "titan_clip_966_000468_movie", "source": {"subset": "titan", "scenario": "clip_966", "frame": "000468"}, "frames": ["titan_clip_966_000468_movie_t-3.jpg", "titan_clip_966_000468_movie_t-2.jpg", "titan_clip_966_000468_movie_t-1.jpg", "titan_clip_966_000468_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian.", "environment_perception": "An urban divided roadway with two same-direction lanes is separated from the opposite carriageway by a planted median and railing; the pavement looks smooth and traffic stays light to moderate. A white minivan ahead in the right lane continues straight at a steady pace. On the left edge ahead, a small flatbed truck is parked partly intruding into the left lane, and a pedestrian in black pants walks away from the ego along the road beside it because the parked vehicle blocks the curbside space. Construction equipment and materials line the left sidewalk, further narrowing the approach near the parked truck.", "hazard_reasoning": "There is a pedestrian wearing black pants and walking on the left side of the road, away from the ego-car, because of the parked vehicle. Because the pedestrian is near the roadway and partially obscured by the parked truck, the driver should manoeuvre carefully to avoid a potential collision."}
{"id": "train_09203", "split": "train", "clip_key": "2020-0127-132751_085131_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "085131"}, "frames": ["2020-0127-132751_085131_movie_t-3.jpg", "2020-0127-132751_085131_movie_t-2.jpg", "2020-0127-132751_085131_movie_t-1.jpg", "2020-0127-132751_085131_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of slowing white SUV ahead", "environment_perception": "An urban multilane road with three same-direction lanes runs between midrise buildings, the pavement dry and in good condition, with heavy stop-and-go traffic. A small flatbed truck covered by a green tarp is directly ahead in the ego lane, creeping forward and constraining the pace. To the right ahead, a white SUV slows in the right-hand lane due to congestion building in front, edging closer to the ego lane. On the left, a large box truck moves slowly alongside, reducing gaps for lane changes. Other vehicles fill the adjacent lanes, and no unusual signage or hazards are prominent.", "hazard_reasoning": "There is a white SUV slowing down in the right hand lane due to traffic congestion ahead. This slowdown indicates traffic congestion ahead that may affect your path, so you should be aware to adjust speed and maintain a safe distance."}
{"id": "train_09204", "split": "train", "clip_key": "2020-0131-135401_053844_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "053844"}, "frames": ["2020-0131-135401_053844_movie_t-3.jpg", "2020-0131-135401_053844_movie_t-2.jpg", "2020-0131-135401_053844_movie_t-1.jpg", "2020-0131-135401_053844_movie_t.jpg"], "hazard_type": "motorcyclist", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban arterial with three lanes in the ego direction runs between tall buildings, divided from opposing traffic by a guardrail on the right; the dry pavement is smooth and traffic is moderate. Far ahead an overhead gantry marks an intersection with signals. A black motorcycle ahead in the ego lane slows as it approaches the traffic signal, briefly constraining the ego car's pace. A white van slightly farther ahead in the right lane continues straight at a steady speed, keeping a similar gap to traffic ahead. A white sedan ahead in the left lane also proceeds straight and maintains its lane. An overhead no-right-turn sign is visible, and blue guide signs for through routes appear above; bicycles are parked along the left sidewalk.", "hazard_reasoning": "There is a black motorcycle slowing in the ego lane, in front of the ego car, because of a red traffic light ahead. The motorcycle is decelerating sharply due to the red light, requiring the driver to also reduce speed to maintain safety and avoid a collision."}
{"id": "train_09205", "split": "train", "clip_key": "2020-0206-101736_018719_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "018719"}, "frames": ["2020-0206-101736_018719_movie_t-3.jpg", "2020-0206-101736_018719_movie_t-2.jpg", "2020-0206-101736_018719_movie_t-1.jpg", "2020-0206-101736_018719_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Be aware of the cyclist", "environment_perception": "An urban divided boulevard with two lanes in the ego direction and a planted median separating oncoming traffic appears smooth and dry, and traffic flows at a steady moderate pace. A small tarp-covered mini-truck travels ahead in the ego lane at a similar speed, effectively setting the ego vehicle's pace. A larger green truck stands stopped along the left curb near the camera, narrowing the shoulder as the ego vehicle passes. A cyclist wearing all black rides ahead in the left cycling lane away from the ego car, keeping to the roadside and remaining parallel to traffic. Across the median, oncoming cars and vans move continuously but are well separated from the ego path.", "hazard_reasoning": "There is a cyclist wearing all black, cycling in the left cycling lane, away from the ego car. The cyclist could move closer or merge unexpectedly, so the driver should be aware to maintain a safe buffer."}
{"id": "train_09206", "split": "train", "clip_key": "titan_clip_384_000018_movie", "source": {"subset": "titan", "scenario": "clip_384", "frame": "000018"}, "frames": ["titan_clip_384_000018_movie_t-3.jpg", "titan_clip_384_000018_movie_t-2.jpg", "titan_clip_384_000018_movie_t-1.jpg", "titan_clip_384_000018_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the parked sedan", "environment_perception": "An urban shopping street with a narrow single-lane roadway, curbs, and bollards shows smooth pavement and light vehicle flow. A white sedan is parked along the left edge ahead in the ego lane, occupying part of the lane. Farther ahead, a dark van proceeds in the same direction near the center of the lane. Several pedestrians are visible ahead near the arcade entrance, some walking across the street and others stepping from the right sidewalk into the roadway in the ego vehicle's path. A bicycle stands by the right curb and bollards line the left sidewalk.", "hazard_reasoning": "There is a white sedan parked on the left side of the road in the ego lane. This parked vehicle partially obstructs the driving lane, so the driver should carefully maneuver around it to maintain a safe path."}
{"id": "train_09207", "split": "train", "clip_key": "titan_clip_722_000090_movie", "source": {"subset": "titan", "scenario": "clip_722", "frame": "000090"}, "frames": ["titan_clip_722_000090_movie_t-3.jpg", "titan_clip_722_000090_movie_t-2.jpg", "titan_clip_722_000090_movie_t-1.jpg", "titan_clip_722_000090_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around parked van", "environment_perception": "An urban two-way street with a single narrow lane in each direction has no median and smooth pavement, and traffic remains light. Far ahead on the left curb, a red van is parked, creating a fixed obstacle along the ego vehicle's side of the road. A pedestrian walks along the right sidewalk ahead, continuing away from the camera and staying off the carriageway. No signals or notable signs are visible, and there are no moving vehicles in the ego lane or oncoming.", "hazard_reasoning": "There is a red van parked on the left side of the road. This parked vehicle reduces available lane width, requiring careful manoeuvre to avoid collision."}
{"id": "train_09208", "split": "train", "clip_key": "2020-0227-104226_044078_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "044078"}, "frames": ["2020-0227-104226_044078_movie_t-3.jpg", "2020-0227-104226_044078_movie_t-2.jpg", "2020-0227-104226_044078_movie_t-1.jpg", "2020-0227-104226_044078_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane road with smooth asphalt and only painted separations is shown, and the ego vehicle travels in the left lane while traffic is heavy and largely stopped. A white hatchback is stopped directly ahead in the ego lane due to a queue of vehicles, constraining the ego car. Ahead-left, a silver microvan in the adjacent lane is also halted in the line, limiting room to maneuver. On the right side, a cyclist rides forward along the sidewalk beside the roadway, separated by a guardrail. A traffic light and an intersection are visible ahead above the waiting vehicles.", "hazard_reasoning": "There is a white hatchback stopped in front of the ego car, because of traffic congestion ahead. The driver should stop to avoid collision with the halted vehicle and adapt to the slowing traffic."}
{"id": "train_09209", "split": "train", "clip_key": "2020-0210-101957_001346_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "001346"}, "frames": ["2020-0210-101957_001346_movie_t-3.jpg", "2020-0210-101957_001346_movie_t-2.jpg", "2020-0210-101957_001346_movie_t-1.jpg", "2020-0210-101957_001346_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Stop for pedestrian crossing", "environment_perception": "An urban commercial street with a single lane in each direction, no median, and sound pavement shows light traffic as the road rises and curves slightly right. An overhead signal at the crosswalk governs the junction and displays red. A pedestrian on the right steps onto the zebra crossing and walks left across the ego lane because the red light stops vehicles. A second pedestrian stands at the left curb near the crosswalk, lingering at the edge and facing the roadway. A small black van ahead in the ego lane rolls slowly beyond the crosswalk, setting the pace. Oncoming cars travel uphill in the opposite lane without interacting.", "hazard_reasoning": "A pedestrian wearing a brown coat and jeans is crossing at the pedestrian crosswalk to the left side of the road, because of the red light. The driver should stop to allow the pedestrian to cross safely and prevent a collision."}
{"id": "train_09210", "split": "train", "clip_key": "2020-0131-135401_043831_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "043831"}, "frames": ["2020-0131-135401_043831_movie_t-3.jpg", "2020-0131-135401_043831_movie_t-2.jpg", "2020-0131-135401_043831_movie_t-1.jpg", "2020-0131-135401_043831_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with opposing lanes divided by an orange centerline runs between close-set buildings, the pavement smooth and traffic light. A white sedan ahead in the ego lane slows, reducing the ego vehicle's pace. An oncoming white van proceeds steadily in the opposite lane while staying clear of the centerline. Pedestrians on the left sidewalk walk and wait behind railings near the curb, remaining outside the roadway.", "hazard_reasoning": "There is a white sedan slowing down in front of the ego car, in the ego lane. The driver should follow the vehicle ahead to maintain safe spacing as it slows and prevent a rear-end collision."}
{"id": "train_09211", "split": "train", "clip_key": "titan_clip_890_000072_movie", "source": {"subset": "titan", "scenario": "clip_890", "frame": "000072"}, "frames": ["titan_clip_890_000072_movie_t-3.jpg", "titan_clip_890_000072_movie_t-2.jpg", "titan_clip_890_000072_movie_t-1.jpg", "titan_clip_890_000072_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban alley lined with shops forms a single shared lane with no divider and mostly smooth but patched pavement, and traffic is light as the ego car rolls forward slowly. Ahead on the left, a pedestrian in a yellow shirt pushes a cart toward the left side of the road after it was blocking the road, briefly intruding into the lane and constraining the ego vehicle's pace. Bicycles and freestanding signboards are stationed along both curbs, especially on the right, narrowing the passage but remaining stationary.", "hazard_reasoning": "There is a pedestrian wearing a yellow shirt, pushing carts to the left side, on the left side of the road, because it was blocking the road. The driver should slow down because the pedestrian is occupying the roadway and may change path unexpectedly."}
{"id": "train_09212", "split": "train", "clip_key": "2020-0204-150838_065237_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "065237"}, "frames": ["2020-0204-150838_065237_movie_t-3.jpg", "2020-0204-150838_065237_movie_t-2.jpg", "2020-0204-150838_065237_movie_t-1.jpg", "2020-0204-150838_065237_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway approach with two same-direction lanes and a dashed side lane on the right has dry, smooth pavement and light to moderate, steadily flowing traffic. A black dump truck ahead in the ego lane drives forward and slowly pulls away, constraining the ego vehicle's pace. In the adjacent left lane, a white truck travels parallel and then edges slightly ahead while staying in its lane, not affecting the ego path. The right-side auxiliary lane remains empty beside a guardrail under elevated flyovers, and no notable signals or signs are visible.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09213", "split": "train", "clip_key": "2020-0203-114632_015121_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "015121"}, "frames": ["2020-0203-114632_015121_movie_t-3.jpg", "2020-0203-114632_015121_movie_t-2.jpg", "2020-0203-114632_015121_movie_t-1.jpg", "2020-0203-114632_015121_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way street with red-colored pavement in the left lane and no physical median heads toward a zebra crossing and signalized intersection; the surface looks smooth, with light same-direction flow and steady oncoming traffic. Several cars approach in the opposing lane to the right, including a black sedan near the crosswalk, continuing straight past the ego and briefly constraining lateral space at the center line. A white van also comes toward the camera along the right side of the roadway, passing close but remaining in its lane. Pedestrians move along the left sidewalk behind a guardrail, and a few gather near the crosswalk where they may begin to cross when permitted. Construction fencing lines the right roadside.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09214", "split": "train", "clip_key": "titan_clip_682_000588_movie", "source": {"subset": "titan", "scenario": "clip_682", "frame": "000588"}, "frames": ["titan_clip_682_000588_movie_t-3.jpg", "titan_clip_682_000588_movie_t-2.jpg", "titan_clip_682_000588_movie_t-1.jpg", "titan_clip_682_000588_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban commercial backstreet with a single narrow two-way lane and no centerline is visible; the pavement looks smooth and there are no moving vehicles, while pedestrian activity is moderate. On the left side near the ego path, a pedestrian wearing a checkered shirt walks toward the camera, close to the travel lane and may enter it. Farther ahead near the center, another pedestrian in a white shirt walks away along the roadway in the ego path. On the right edge by storefronts, a person stands using a phone at the curb, encroaching slightly into the lane. A no parking sign is posted on the left, and shop displays and boxes narrow the roadway edges.", "hazard_reasoning": "There is a pedestrian wearing a checkered shirt and walking on the left side of the road, toward the ego car. The pedestrian's movement could intersect the vehicle's path, so the driver should slow down to maintain safe clearance and avoid a collision."}
{"id": "train_09215", "split": "train", "clip_key": "2020-0226-140503_032962_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "032962"}, "frames": ["2020-0226-140503_032962_movie_t-3.jpg", "2020-0226-140503_032962_movie_t-2.jpg", "2020-0226-140503_032962_movie_t-1.jpg", "2020-0226-140503_032962_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Be aware of the cyclist on the left side.", "environment_perception": "An urban divided arterial with a raised median and guardrail approaches a signalized intersection; the pavement is dry and intact and traffic moves at a moderate, steady pace. A black van directly ahead in the ego lane continues toward the junction and eases speed, setting the pace. On the left curbside ahead, a cyclist wearing a black shirt rides away from the ego vehicle along the road edge, remaining outside the lane but close to the crosswalk area. On the separated roadway to the right, several trucks travel in the opposite direction behind the barrier with no interaction. The overhead traffic light facing the ego vehicle shows green.", "hazard_reasoning": "There is a cyclist wearing a black shirt who is cycling at the left side of the road, away from the ego car. The cyclist's proximity to the travel lane could require the driver to be aware and maintain a safe lateral distance to prevent a collision."}
{"id": "train_09216", "split": "train", "clip_key": "2020-0227-104226_080783_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "080783"}, "frames": ["2020-0227-104226_080783_movie_t-3.jpg", "2020-0227-104226_080783_movie_t-2.jpg", "2020-0227-104226_080783_movie_t-1.jpg", "2020-0227-104226_080783_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban three-lane divided arterial with a raised median and smooth pavement runs ahead; traffic in our direction is moderate, while the oncoming side beyond the median is heavy with queued trucks. A white box truck directly ahead in the ego lane slows because of congestion and constrains the ego car's pace. In the adjacent right lane, a dark SUV ahead proceeds steadily with slightly quicker flow but does not signal a merge. In the left lane ahead, a small white utility truck cruises at a similar speed and remains in its lane, posing little interaction.", "hazard_reasoning": "There is a white truck slowing in front of the ego car in the ego lane, because of traffic congestion. The truck's reduced speed due to congestion means you must slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_09217", "split": "train", "clip_key": "titan_clip_967_000072_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_967_000072_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_967_000072_movie_t-3_augB1.jpg", "titan_clip_967_000072_movie_t-2_augB1.jpg", "titan_clip_967_000072_movie_t-1_augB1.jpg", "titan_clip_967_000072_movie_t_augB1.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to the crossing pedestrian.", "environment_perception": "An urban neighborhood setting features a very narrow two-way road without a marked centerline, bordered by curbside lines; the pavement appears smooth and dry, and traffic is light with no vehicles ahead or oncoming. A pedestrian wearing a white shirt, blue pants, and a backpack crosses midblock from the left toward the right in the middle of the road, moving into the ego vehicle's path. Another pedestrian ahead slightly left walks away along the lane center, constraining the space available in the ego lane. A third person stands at the left curb by the buildings, stationary near the roadway. Shopfronts closely line the right side.", "hazard_reasoning": "There is a pedestrian wearing a white shirt, blue pants, and carrying a backpack, in the middle of the road, crossing the street from the left side of the street to the right side. Because the pedestrian is crossing unexpectedly in the middle of the road, the driver should yield to avoid a collision."}
{"id": "train_09218", "split": "train", "clip_key": "titan_clip_509_000222_movie", "source": {"subset": "titan", "scenario": "clip_509", "frame": "000222"}, "frames": ["titan_clip_509_000222_movie_t-3.jpg", "titan_clip_509_000222_movie_t-2.jpg", "titan_clip_509_000222_movie_t-1.jpg", "titan_clip_509_000222_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban residential two-way road with no centerline or median runs straight ahead on smooth asphalt, and traffic is very light with no moving vehicles. On the right ahead, a pedestrian pulls a small cart and walks away from the ego car along the edge of the roadway, potentially edging into the ego path. Farther ahead on the same side, two pedestrians continue walking in the same direction near the wall, reducing clearance on the right. A no-parking sign stands on the left verge. A white car is parked in a recessed driveway on the left behind cones, and no traffic signals are visible.", "hazard_reasoning": "There is a pedestrian pulling a cart and walking away from the ego car, on the right side of the road. The driver should slow down to ensure a safe buffer, as the cart-pulling pedestrian may veer into the lane or reduce walking speed."}
{"id": "train_09219", "split": "train", "clip_key": "2020-0127-132751_088880_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "088880"}, "frames": ["2020-0127-132751_088880_movie_t-3.jpg", "2020-0127-132751_088880_movie_t-2.jpg", "2020-0127-132751_088880_movie_t-1.jpg", "2020-0127-132751_088880_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way road with a single left-side lane for the ego vehicle runs beside fenced sidewalks, separated from oncoming traffic by a wide painted median; the pavement looks smooth and traffic is light. A blue truck ahead in the ego lane slows because of congestion ahead, constraining the ego car's pace. An oncoming car in the right-side lane proceeds steadily beyond the painted median with no interaction. On the left, pedestrians walk along the sidewalk near the zebra crossing and continue behind the railing without entering the roadway.", "hazard_reasoning": "There is a blue truck slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and adapt to the reduced speed of the truck."}
{"id": "train_09220", "split": "train", "clip_key": "titan_clip_889_000102_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_889_000102_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_889_000102_movie_t-3_augB1.jpg", "titan_clip_889_000102_movie_t-2_augB1.jpg", "titan_clip_889_000102_movie_t-1_augB1.jpg", "titan_clip_889_000102_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban shopping street with a single unmarked lane and no divider runs between close storefronts; the asphalt is smooth and traffic is very light with no visible vehicles. Directly ahead in the ego lane, a pedestrian in a cap wearing a backpack walks away along the center of the roadway, occupying the path and effectively setting the pace. Farther ahead near the left edge, another pedestrian walks in the same direction close to the travel line, remaining within the constrained corridor. No traffic signals or regulatory signs are evident. Parked bicycles, display boards, crates, and other shop fixtures line both sides and protrude into the carriageway, narrowing the usable lane.", "hazard_reasoning": "There is a pedestrian in a cap, and wearing a backpack, walking in front of the ego car, in the ego lane, away from the ego car. The pedestrian is directly in your path and may change direction, so the driver should carefully manoeuvre around them to maintain a safe distance."}
{"id": "train_09221", "split": "train", "clip_key": "2020-0218-103119_006698_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "006698"}, "frames": ["2020-0218-103119_006698_movie_t-3.jpg", "2020-0218-103119_006698_movie_t-2.jpg", "2020-0218-103119_006698_movie_t-1.jpg", "2020-0218-103119_006698_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of possible blind spot due to parked truck", "environment_perception": "A dense urban residential street with a very narrow two-way carriageway, one lane each direction and no median, has smooth pavement and light flow, with green edge strips marking the sides. Ahead in the ego lane, a green sedan slows and edges toward the center to maneuver past a white truck parked on the right, which narrows the lane and constrains the ego car's pace. Parked vehicles line both sides, further tightening the corridor.", "hazard_reasoning": "There is a green sedan maneuvering in the ego lane, in front of the ego car, because of a parked truck ahead. The parked truck creates a blind spot forcing the sedan to merge, so the driver should be aware of sudden lane changes due to the obstruction."}
{"id": "train_09222", "split": "train", "clip_key": "titan_clip_773_000594_movie", "source": {"subset": "titan", "scenario": "clip_773", "frame": "000594"}, "frames": ["titan_clip_773_000594_movie_t-3.jpg", "titan_clip_773_000594_movie_t-2.jpg", "titan_clip_773_000594_movie_t-1.jpg", "titan_clip_773_000594_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban neighborhood street with a narrow two-way carriageway lacking a centerline runs between shops; the pavement is smooth and dry, and traffic is light with no other moving vehicles. The road curves slightly left ahead. On the right side near the curb, a woman in a black dress walks toward the ego vehicle along the roadway edge and may enter the ego lane. Beside her, a man also walks toward the camera in the same position, keeping close to the travel lane and influencing the vehicle's pace. Several motorcycles and bicycles are parked outside the shops on the right, some projecting into the road and reducing the available width.", "hazard_reasoning": "There is a woman wearing a black dress and walking on the right side of the road, toward the ego car. The driver should slow down to ensure enough time to react if she steps into the vehicle's path."}
{"id": "train_09223", "split": "train", "clip_key": "2020-0218-103119_057282_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "057282"}, "frames": ["2020-0218-103119_057282_movie_t-3.jpg", "2020-0218-103119_057282_movie_t-2.jpg", "2020-0218-103119_057282_movie_t-1.jpg", "2020-0218-103119_057282_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the truck's lane change.", "environment_perception": "An urban two-lane street runs under an elevated structure, bounded by a right-side guardrail and smooth pavement, with moderate same-direction traffic. A white box truck directly ahead in the ego lane moves right into the adjacent lane, taking advantage of an opening in traffic and leaving the lane ahead open. A black SUV farther ahead in the right lane proceeds straight at a steady speed, shaping the gap the truck uses. A white minibus sits along the far-right edge of the right lane and creeps forward, staying out of the ego lane but slightly narrowing that side.", "hazard_reasoning": "There is a white truck changing lanes, from the ego lane to the right lane, because there is an opening in traffic allowing the truck to move over. Be cautious because the truck may merge unexpectedly into your lane, requiring you to adjust speed or position to maintain safety."}
{"id": "train_09224", "split": "train", "clip_key": "titan_clip_443_000498_movie", "source": {"subset": "titan", "scenario": "clip_443", "frame": "000498"}, "frames": ["titan_clip_443_000498_movie_t-3.jpg", "titan_clip_443_000498_movie_t-2.jpg", "titan_clip_443_000498_movie_t-1.jpg", "titan_clip_443_000498_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Be aware of the umbrella-carrying pedestrian ahead", "environment_perception": "An urban commercial street with a narrow shared roadway paved in bricks has no divider or lane markings, and traffic is limited to light pedestrian movement. Ahead in the middle of the road, a pedestrian carrying an umbrella walks away from the ego vehicle along its path, likely setting the pace. On the right foreground, another pedestrian moves toward the camera along the curb and briefly edges into the roadway before passing by. Along the left edge, a pedestrian walks away near storefronts and stays close to the side, presenting little interference. No traffic signals or posted speeds are visible.", "hazard_reasoning": "There is a pedestrian carrying an umbrella, walking away from the ego car, in the middle of the road. The driver should be aware of the umbrella-carrying pedestrian ahead to avoid sudden braking or collision."}
{"id": "train_09225", "split": "train", "clip_key": "titan_clip_1011_000534_movie", "source": {"subset": "titan", "scenario": "clip_1011", "frame": "000534"}, "frames": ["titan_clip_1011_000534_movie_t-3.jpg", "titan_clip_1011_000534_movie_t-2.jpg", "titan_clip_1011_000534_movie_t-1.jpg", "titan_clip_1011_000534_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing", "environment_perception": "An urban shopping street with a single narrow lane, no median, and smooth asphalt shows very light vehicle traffic but heavy pedestrian flow as the car approaches a gentle left bend by a FamilyMart. A man wearing a striped T-shirt, blue shorts, and a backpack crosses from the right curb to the left directly in the ego lane ahead, blocking the path. Two pedestrians ahead on the left also walk diagonally across toward the left sidewalk in front of the car, further constraining progress. A small group stands at the right corner by the storefront close to the curb, near the lane where they may enter. A red no-entry sign on the right marks a restricted side street.", "hazard_reasoning": "There is a man, wearing a striped t-shirt and blue shorts, and carrying a backpack, crossing the street, from the right side to the left side, in the ego lane. Therefore, the driver should yield to avoid colliding with the pedestrian crossing ahead."}
{"id": "train_09226", "split": "train", "clip_key": "2020-0205-103411_044010_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "044010"}, "frames": ["2020-0205-103411_044010_movie_t-3.jpg", "2020-0205-103411_044010_movie_t-2.jpg", "2020-0205-103411_044010_movie_t-1.jpg", "2020-0205-103411_044010_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop promptly to avoid a collision", "environment_perception": "An urban intersection under elevated expressways features two lanes in the ego vehicle's direction with a fenced divider on the right; the dry pavement is in good condition and traffic is queued and stationary. A black hatchback immediately ahead in the ego lane is stopped at the line because the overhead signal facing us shows red, holding the ego vehicle. In the adjacent left lane, a silver van waits alongside at the same light without changing position. On the far side of the intersection, several pedestrians stand near the crosswalk, and other vehicles are present on the cross street.", "hazard_reasoning": "There is a black hatchback stopped in front of the ego car, in the ego lane, because of a red traffic light. The driver should stop promptly to avoid a collision with the vehicle ahead."}
{"id": "train_09227", "split": "train", "clip_key": "titan_clip_196_000246_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_196_000246_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_196_000246_movie_t-3_augB1.jpg", "titan_clip_196_000246_movie_t-2_augB1.jpg", "titan_clip_196_000246_movie_t-1_augB1.jpg", "titan_clip_196_000246_movie_t_augB1.jpg"], "hazard_type": "cyclist", "severity_level": "HIGH", "warning_content": "Be cautious of cyclist deviating path", "environment_perception": "A dense urban street lined with tall buildings features a narrow unmarked two-way roadway in good condition with light to moderate, slow-moving traffic. A cyclist in a white shirt rides ahead from the left curb toward the middle of the road, moving away from the ego car to pass a parked vehicle and potentially entering the ego lane. A white car ahead in the same direction slows while threading past obstacles, constraining the ego vehicle's pace. A blue truck is stopped on the right edge near the camera, narrowing the roadway. Orange cones and small barricades further constrict the center.", "hazard_reasoning": "A cyclist in a white shirt, cycling in the middle of the road from the left side, away from the ego car, because of a parked vehicle. The cyclist's path may shift unexpectedly as they bypass the parked vehicle, requiring the driver to stay alert."}
{"id": "train_09228", "split": "train", "clip_key": "titan_clip_269_000444_movie", "source": {"subset": "titan", "scenario": "clip_269", "frame": "000444"}, "frames": ["titan_clip_269_000444_movie_t-3.jpg", "titan_clip_269_000444_movie_t-2.jpg", "titan_clip_269_000444_movie_t-1.jpg", "titan_clip_269_000444_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Be aware of cyclists approaching on the right.", "environment_perception": "An urban two-way neighborhood street with no centerline and smooth dry pavement shows light traffic. A white van is stopped along the left curb just ahead, protruding into the ego lane and narrowing the passage. Two oncoming cyclists on the right side, one in a black dress and one in shorts, ride toward the ego in the roadside bike lane and continue along the curb, approaching the ego's forward path. A pigeon stands in the middle of the lane ahead, directly in the ego vehicle's path.", "hazard_reasoning": "There are two cyclists wearing a black dress and shorts, cycling on the right side of the road in the cycling lane, toward the ego car. The driver should be aware of their approach on the right to anticipate any lateral movement."}
{"id": "train_09229", "split": "train", "clip_key": "2020-0227-153144_034635_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "034635"}, "frames": ["2020-0227-153144_034635_movie_t-3.jpg", "2020-0227-153144_034635_movie_t-2.jpg", "2020-0227-153144_034635_movie_t-1.jpg", "2020-0227-153144_034635_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Be aware of parked vehicles ahead", "environment_perception": "An urban multi-lane arterial runs between tall buildings, with good pavement and a low guardrail and planted strip on the right; same-direction traffic in multiple lanes is heavy and moves in slow stop-and-go flow. A white microvan directly ahead in the ego lane shows its brake lights and waits, constraining our pace. In the lane to the left of the ego-car, a white minivan maneuvers around a parked white minivan at the curb as it passes, staying alongside our path. Farther ahead in the right lane, a small truck proceeds slowly parallel to us. No-parking signs are visible along the roadside.", "hazard_reasoning": "There is a white minivan in the lane to the left of the ego-car, which is maneuvering around a parked white minivan. The parked minivan on the side may force adjacent vehicles to change lanes unexpectedly, so the driver should be cautious of sudden lane changes."}
{"id": "train_09230", "split": "train", "clip_key": "2020-0210-155354_011077_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "011077"}, "frames": ["2020-0210-155354_011077_movie_t-3.jpg", "2020-0210-155354_011077_movie_t-2.jpg", "2020-0210-155354_011077_movie_t-1.jpg", "2020-0210-155354_011077_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down due to congestion ahead", "environment_perception": "An urban two-way road with one lane each direction rises toward an underpass, separated only by a double centerline on smooth asphalt; traffic is light to moderate and tightens near the bridge. A silver hatchback ahead in the ego lane slows with the forming congestion, setting the ego car's pace. Farther ahead, another small car in the same lane moves slowly under the bridge, keeping a short gap. An oncoming truck approaches in the right lane toward the camera while staying in its lane. Pedestrians walk along the left sidewalk behind guardrails, away from the roadway.", "hazard_reasoning": "There is a silver hatchback slowing in the ego lane, in front of the ego car, because of traffic congestion ahead. The driver should slow down to maintain safe following distance and adapt to the reduced speeds due to congestion."}
{"id": "train_09231", "split": "train", "clip_key": "2020-0214-102601_085683_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "085683"}, "frames": ["2020-0214-102601_085683_movie_t-3.jpg", "2020-0214-102601_085683_movie_t-2.jpg", "2020-0214-102601_085683_movie_t-1.jpg", "2020-0214-102601_085683_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "LOW", "warning_content": "Be aware of the cyclist waiting to cross.", "environment_perception": "An urban two-way road with one lane per direction and a solid yellow centerline stretches ahead, the pavement smooth and traffic light. A dark hatchback directly ahead in the ego lane proceeds toward a marked crosswalk and slows slightly, setting the ego vehicle's pace. On the left near the curb, a cyclist wearing a black jacket and a face mask waits by the crosswalk to cross and may enter the ego lane. On the right sidewalk, another cyclist rides slowly along the curb toward the intersection but remains off the roadway. Pedestrian crossing signs are visible at the crosswalk.", "hazard_reasoning": "A cyclist wearing a black jacket with a face mask is waiting on the left side of the road to cross. The cyclist may start entering the roadway when the signal changes, so the driver should be aware to prevent a potential collision."}
{"id": "train_09232", "split": "train", "clip_key": "2020-0226-101332_038235_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "038235"}, "frames": ["2020-0226-101332_038235_movie_t-3.jpg", "2020-0226-101332_038235_movie_t-2.jpg", "2020-0226-101332_038235_movie_t-1.jpg", "2020-0226-101332_038235_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial passes between tall office buildings, with three lanes in our direction and a metal fence median on the right separating oncoming traffic; the pavement is dry and flow is heavy, queued at a signal. A black sedan ahead in the ego middle lane is stopped for the red light, holding our pace. In the left lane, a white kei van slightly ahead also waits at the light, limiting a left merge. Farther ahead, a small white van and a teal hatchback in adjacent lanes inch toward the intersection as part of the queue.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, because of a red traffic light. The driver should stop to avoid colliding with the halted vehicle and to comply with the red signal."}
{"id": "train_09233", "split": "train", "clip_key": "titan_clip_203_000264_movie", "source": {"subset": "titan", "scenario": "clip_203", "frame": "000264"}, "frames": ["titan_clip_203_000264_movie_t-3.jpg", "titan_clip_203_000264_movie_t-2.jpg", "titan_clip_203_000264_movie_t-1.jpg", "titan_clip_203_000264_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the pedestrian", "environment_perception": "An urban two-way street with no centerline and narrow lanes runs between mid-rise buildings; the asphalt is sound and traffic is light but slow. A white box truck is immediately ahead along the left side in the same direction, crawling past the curb and setting the ego car's pace. Farther ahead in the same direction, a small white van continues up the middle of the lane, further limiting passing space. On the right edge, a pedestrian wearing a cap and gray pants walks toward the ego car along the roadway where there is no sidewalk. Green carts and bins at a storefront tighten the right margin.", "hazard_reasoning": "There is a male pedestrian wearing a cap and gray pants, walking on the right side of the road, towards the ego-car, because there is no sidewalk. The driver should manoeuvre around the pedestrian to maintain safety and avoid collision."}
{"id": "train_09234", "split": "train", "clip_key": "titan_clip_675_000462_movie", "source": {"subset": "titan", "scenario": "clip_675", "frame": "000462"}, "frames": ["titan_clip_675_000462_movie_t-3.jpg", "titan_clip_675_000462_movie_t-2.jpg", "titan_clip_675_000462_movie_t-1.jpg", "titan_clip_675_000462_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with buildings tight to the curb and no centerline; pavement is smooth and traffic is light as the road heads toward an elevated structure. A silver van travels ahead in the ego lane near the left edge, moving slowly and setting the pace. On the right edge, two pedestrians walk together toward the ego car, keeping to the curb but close enough that they could enter the lane. Slightly farther ahead on the right, a person with a bicycle waits at the curb by a storefront, remaining out of the roadway. No salient traffic signals or posted speeds are visible.", "hazard_reasoning": "There are two pedestrians walking together on the right side of the road, towards the ego car. They are approaching the vehicle's path and may step into its lane unexpectedly, so the driver should slow down to maintain safety."}
{"id": "train_09235", "split": "train", "clip_key": "titan_clip_1320_000018_movie", "source": {"subset": "titan", "scenario": "clip_1320", "frame": "000018"}, "frames": ["titan_clip_1320_000018_movie_t-3.jpg", "titan_clip_1320_000018_movie_t-2.jpg", "titan_clip_1320_000018_movie_t-1.jpg", "titan_clip_1320_000018_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the parked truck", "environment_perception": "A narrow two-way urban street with one lane each direction curves slightly right, with smooth pavement and very light traffic and no vehicles moving ahead. Farther ahead on the left curb, a white box truck is parked with its rear open and being unloaded, and it encroaches on the ego lane and constrains the passable width. No oncoming vehicles appear in the opposite lane. A small dolly and stacked boxes rest near the truck's rear and extend toward the roadway, while a covered scooter and a bicycle are parked at the right edge near the crosswalk.", "hazard_reasoning": "There is a white truck that has been parked on the left side of the road, because it is being unloaded. The parked truck obscures the roadway and could hide pedestrians or oncoming traffic, so manoeuvre carefully around it."}
{"id": "train_09236", "split": "train", "clip_key": "2020-0131-135401_016087_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "016087"}, "frames": ["2020-0131-135401_016087_movie_t-3.jpg", "2020-0131-135401_016087_movie_t-2.jpg", "2020-0131-135401_016087_movie_t-1.jpg", "2020-0131-135401_016087_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two same-direction lanes and no median approaches a signalized intersection; the pavement is dry and smooth, and traffic is moderate and flowing on green. A black van ahead in the ego lane proceeds straight under the green light, pacing the ego vehicle. In the adjacent right lane, a white car slightly ahead rolls forward and continues straight alongside without encroaching left. On the far right edge, a motorcyclist filters up beside the right lane and accelerates ahead through the junction. Pedestrians wait on the left sidewalk near the crosswalk, staying off the road. The traffic signal shows green, and roadside signs indicate straight-ahead movement with several turn prohibitions.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09237", "split": "train", "clip_key": "2020-0205-103411_121000_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "121000"}, "frames": ["2020-0205-103411_121000_movie_t-3.jpg", "2020-0205-103411_121000_movie_t-2.jpg", "2020-0205-103411_121000_movie_t-1.jpg", "2020-0205-103411_121000_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of lane-changing hatchback ahead", "environment_perception": "An urban multilane arterial with a separated curbside bus bay on the right has dry, well-marked pavement and moderate, slow traffic. Directly ahead, a black compact hatchback in the right lane moves left to merge ahead of the ego car into the left lane and then proceeds slowly. To the right, a city bus is stopped in the bay behind a low curb and remains stationary. Farther ahead in the adjacent right lane, a line of cars creeps forward in queue, limiting gaps for additional merges.", "hazard_reasoning": "There is a black compact hatchback lane-changing in front of the ego car to the left lane. Drivers should be aware because the hatchback's merge maneuver may reduce available space and require the ego-vehicle to adjust speed or position to maintain safety."}
{"id": "train_09238", "split": "train", "clip_key": "titan_clip_635_000180_movie", "source": {"subset": "titan", "scenario": "clip_635", "frame": "000180"}, "frames": ["titan_clip_635_000180_movie_t-3.jpg", "titan_clip_635_000180_movie_t-2.jpg", "titan_clip_635_000180_movie_t-1.jpg", "titan_clip_635_000180_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow urban two-way street with no centerline and smooth pavement runs between close buildings, and traffic is light at low speed. A white truck directly ahead in the ego lane slows, constraining the ego vehicle's pace. A pedestrian in white walks ahead near the right edge of the lane in front of the truck, moving away in the same direction as the truck decelerates. Another pedestrian stands at the left curb beside a row of parked bicycles just ahead, pausing and watching the lane. No traffic signals or posted speed signs are clearly visible, and no oncoming vehicles appear.", "hazard_reasoning": "The white truck is slowing in front of the ego car in the ego lane. The driver should slow down to maintain a safe following distance and avoid a potential rear-end collision."}
{"id": "train_09239", "split": "train", "clip_key": "titan_clip_1309_000270_movie", "source": {"subset": "titan", "scenario": "clip_1309", "frame": "000270"}, "frames": ["titan_clip_1309_000270_movie_t-3.jpg", "titan_clip_1309_000270_movie_t-2.jpg", "titan_clip_1309_000270_movie_t-1.jpg", "titan_clip_1309_000270_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Stop and yield to pedestrian", "environment_perception": "An urban commercial street with a single narrow lane and no visible divider has dry pavement and very slow flow as the roadway functions as a shared space with many pedestrians. Parked white vans line both curbs, intruding into the lane and creating pinch points. A group of pedestrians ahead in the center of the lane walks away from the ego vehicle, occupying the travel path and dictating a crawl. On the right, a pedestrian wearing a gray dress and carrying a handbag walks toward the ego car around the parked vehicle, edging into the lane. Ahead right, a person pulling a rolling suitcase walks along the curb in the same direction as traffic, staying close to the parked van and narrowing the passable gap.", "hazard_reasoning": "There is a pedestrian wearing a gray dress, carrying a handbag, walking on the right side of the road towards the ego car, because of the parked vehicle. The pedestrian is forced onto the roadway by the parked van and may step into the vehicle's path unexpectedly, so the driver should stop and yield to avoid a collision."}
{"id": "train_09240", "split": "train", "clip_key": "2020-0227-153144_044555_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "044555"}, "frames": ["2020-0227-153144_044555_movie_t-3.jpg", "2020-0227-153144_044555_movie_t-2.jpg", "2020-0227-153144_044555_movie_t-1.jpg", "2020-0227-153144_044555_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane arterial features a central median with a guardrail; the pavement is dry with a hatched divider forming a right-turn lane, and traffic flows at a moderate, steady pace. A white van drives ahead in the ego lane at a steady pace, then eases off approaching a stopped box truck on the left curb lane and effectively sets the ego car's pace. The box truck is parked for loading along the curb, narrowing the left side and forcing vehicles to pass to its right. Oncoming cars move to the right beyond the median and do not affect the ego path. An overhead blue direction sign indicates routes 200 m ahead. Parked cars line the left curb.", "hazard_reasoning": "There is a white van driving in front of the ego car in the ego lane. The driver should follow the vehicle ahead to maintain a safe distance and improve visibility under glare conditions."}
{"id": "train_09241", "split": "train", "clip_key": "titan_clip_45_000594_movie", "source": {"subset": "titan", "scenario": "clip_45", "frame": "000594"}, "frames": ["titan_clip_45_000594_movie_t-3.jpg", "titan_clip_45_000594_movie_t-2.jpg", "titan_clip_45_000594_movie_t-1.jpg", "titan_clip_45_000594_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "A narrow urban commercial street with a single shared lane and no median runs between shops, paved with block stones and in good condition; motor traffic is absent and pedestrian flow is moderate as the ego-vehicle proceeds straight. Ahead on the right, a female pedestrian walks away from the ego-car along the roadway edge because there is no sidewalk, remaining near the ego path. Farther ahead in the center of the lane, several pedestrians walk in the same direction and drift slightly within the carriageway, constraining the vehicle's pace. Near a right-side storefront, a man stands close to the lane and could step out. Parked bicycles and displays line both sides, narrowing the usable width.", "hazard_reasoning": "There is a female pedestrian walking on the right side of the road, in front of and away from the ego-car, because there is no sidewalk. Manoeuvre carefully to avoid collision since she is sharing the roadway without a sidewalk."}
{"id": "train_09242", "split": "train", "clip_key": "titan_clip_311_000450_movie", "source": {"subset": "titan", "scenario": "clip_311", "frame": "000450"}, "frames": ["titan_clip_311_000450_movie_t-3.jpg", "titan_clip_311_000450_movie_t-2.jpg", "titan_clip_311_000450_movie_t-1.jpg", "titan_clip_311_000450_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "be aware of pedestrian ahead", "environment_perception": "An urban back street with no centerline runs straight between low-rise buildings, the pavement patched and slightly uneven, and traffic appears light with no moving vehicles ahead. A silver flatbed truck is parked along the left curb, partly narrowing the lane and shaping the ego vehicle's approach. A pedestrian wearing a white helmet, blue pants, and a white shirt stands on the left beside this truck, lingering near the roadway and potentially stepping into the path. Farther ahead, another pedestrian walks away near the center-left before keeping to the left edge, remaining relevant to the ego lane. No traffic signals or posted speed signs are visible.", "hazard_reasoning": "There is a pedestrian wearing a white helmet, blue pants, and a white shirt, standing on the left side of the road. Because the pedestrian is close to the travel lane and may step into the roadway, the driver should be aware to avoid a potential collision."}
{"id": "train_09243", "split": "train", "clip_key": "2020-0204-150838_072886_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "072886"}, "frames": ["2020-0204-150838_072886_movie_t-3.jpg", "2020-0204-150838_072886_movie_t-2.jpg", "2020-0204-150838_072886_movie_t-1.jpg", "2020-0204-150838_072886_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-lane one-way road with guardrails on both sides curves gently right and climbs slightly; the pavement is dry and smooth, and traffic is light. A large orange truck is alongside in the left lane near the camera, traveling parallel without encroaching on the ego lane. Far ahead, a dark truck proceeds in the ego lane along the curve, setting the headway. No signals or speed signs are prominent, and no obstacles appear on the roadway.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09244", "split": "train", "clip_key": "titan_clip_563_000234_movie", "source": {"subset": "titan", "scenario": "clip_563", "frame": "000234"}, "frames": ["titan_clip_563_000234_movie_t-3.jpg", "titan_clip_563_000234_movie_t-2.jpg", "titan_clip_563_000234_movie_t-1.jpg", "titan_clip_563_000234_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the pedestrian", "environment_perception": "An urban narrow two-way alley with no marked lanes runs between close storefronts and residences; the asphalt looks smooth and traffic flow is light with only pedestrians visible. On the left near the ego path, a pedestrian in a striped shirt pushes a green cart toward the ego vehicle, moving partly in the travel space and may constrain the pace. Ahead in the center, another pedestrian walks away along the middle of the roadway, remaining in the ego path. Farther ahead near the right edge, a third person moves beside steps near storefronts, staying clear of the lane. A parked SUV in a left-side driveway slightly narrows lateral clearance.", "hazard_reasoning": "There is a pedestrian wearing a striped shirt and pants and pushing a green cart on the left side of the road toward the ego car. The pedestrian pushing the green cart is entering the vehicle's path, requiring careful manoeuvring to prevent a collision."}
{"id": "train_09245", "split": "train", "clip_key": "2020-0205-103411_034949_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "034949"}, "frames": ["2020-0205-103411_034949_movie_t-3.jpg", "2020-0205-103411_034949_movie_t-2.jpg", "2020-0205-103411_034949_movie_t-1.jpg", "2020-0205-103411_034949_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban two-lane one-way road runs ahead with a guardrail divider on the right and dry, slightly worn pavement; traffic is light. A gray van ahead to the left moves right into the ego lane, merging in front and briefly constraining the ego car's pace. A black car farther ahead in the right lane continues straight at a steady speed, becoming the lead vehicle after the merge. Several vehicles are parked along the left curb, remaining stationary and reducing lateral clearance but not blocking the travel lane.", "hazard_reasoning": "There is a gray van in front of the ego car changing lane to the right lane. The van's lane change may cut into the ego-vehicle's path, so the driver should slow down to maintain a safe following distance and avoid a collision."}
{"id": "train_09246", "split": "train", "clip_key": "2020-0227-104226_007794_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "007794"}, "frames": ["2020-0227-104226_007794_movie_t-3.jpg", "2020-0227-104226_007794_movie_t-2.jpg", "2020-0227-104226_007794_movie_t-1.jpg", "2020-0227-104226_007794_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A wide two-way urban boulevard with multiple same-direction lanes and no median opens into a large intersection, the pavement dry and smooth, and traffic heavy in both directions under a green signal. Directly ahead in the ego lane, a white SUV slows because of congestion ahead, constraining our pace. Slightly ahead to the left, a white hatchback proceeds straight in the adjacent lane at a similar speed without signaling. On the right, an oncoming white sedan advances through its lanes across the junction and passes without affecting our path.", "hazard_reasoning": "There is a white SUV slowing down in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_09247", "split": "train", "clip_key": "2020-0228-102841_095684_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "095684"}, "frames": ["2020-0228-102841_095684_movie_t-3.jpg", "2020-0228-102841_095684_movie_t-2.jpg", "2020-0228-102841_095684_movie_t-1.jpg", "2020-0228-102841_095684_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-way road with one lane per direction and no median approaches a signalized intersection; the pavement is dry and traffic is light. A white sedan directly ahead in the left ego lane is stopped because the overhead signal is red, holding the ego vehicle at the line. On the cross street to the right, a white SUV waits at its stop line near the crosswalk and may enter the ego path when the light changes. Several cars continue through on the perpendicular road, crossing ahead while the same-direction queue remains stationary.", "hazard_reasoning": "There is a white sedan stopped in front the ego can, in the ego lane, because of a red traffic light. The driver should stop to avoid colliding with the stopped vehicle at the red signal."}
{"id": "train_09248", "split": "train", "clip_key": "2020-0217-144444_016983_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "016983"}, "frames": ["2020-0217-144444_016983_movie_t-3.jpg", "2020-0217-144444_016983_movie_t-2.jpg", "2020-0217-144444_016983_movie_t-1.jpg", "2020-0217-144444_016983_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban three-lane same-direction arterial runs under an elevated roadway on smooth asphalt, and traffic is heavy but begins to creep forward. A silver van directly ahead in the ego lane accelerates as traffic starts moving, and the ego car follows at its pace. A white hatchback in the lane to the right is slightly ahead and moves forward in parallel close to the ego lane, potentially edging toward the divider line. Farther ahead in the same lane, a dark box truck proceeds slowly, creating a queue that limits progress. On the far right, construction barriers line the shoulder, narrowing the edge of the roadway.", "hazard_reasoning": "There is a silver van accelerating in the ego lane, because traffic has started moving. You should also start moving to keep pace and avoid impeding traffic flow."}
{"id": "train_09249", "split": "train", "clip_key": "2020-0225-145150_000534_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "000534"}, "frames": ["2020-0225-145150_000534_movie_t-3.jpg", "2020-0225-145150_000534_movie_t-2.jpg", "2020-0225-145150_000534_movie_t-1.jpg", "2020-0225-145150_000534_movie_t.jpg"], "hazard_type": "cyclist", "severity_level": "MEDIUM", "warning_content": "Slow down for the cyclist", "environment_perception": "An urban two-way street with narrow lanes and a solid centerline runs between mid-rise buildings; the pavement is smooth and traffic is light, with several cars parked along both curbs. Ahead in the ego lane a cyclist rides away from the camera along the left side, moving outward because of a parked vehicle, so the rider briefly aligns with the ego car's path. A small white van farther ahead in the same direction proceeds slowly near the curb and effectively sets the ego vehicle's pace. On the right side of the roadway a person with a bicycle moves along the curb in the oncoming lane and stays near the sidewalk. Pedestrians stand and walk on the left sidewalk near a driveway, while additional parked vehicles line the street; no notable traffic signals are visible.", "hazard_reasoning": "There is a cyclist cycling on the left side of the road, away from the ego car, because of the parked vehicle. The cyclist may suddenly move into the lane to bypass the parked vehicle, so you should slow down to maintain a safe distance."}
{"id": "train_09250", "split": "train", "clip_key": "2020-0131-135401_047445_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "047445"}, "frames": ["2020-0131-135401_047445_movie_t-3.jpg", "2020-0131-135401_047445_movie_t-2.jpg", "2020-0131-135401_047445_movie_t-1.jpg", "2020-0131-135401_047445_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An elevated urban road runs between mid-rise buildings, with a low concrete divider and guardrails; the pavement looks smooth and clean, and traffic is light with steady flow. A small dark car far ahead in the ego lane continues straight over the crest, maintaining distance and loosely setting the pace. On the separated opposite carriageway to the right, a white truck approaches as oncoming traffic and passes by with no interaction. Farther ahead beyond the crest, a few distant vehicles move in the same direction but remain well ahead. No traffic signals or speed signs are clearly visible, and there are no pedestrians, parked vehicles, or obstacles.", "hazard_reasoning": "No caption provided. The road is clear with light traffic and no vulnerable users or obstacles, so no immediate hazards are present requiring a warning."}
{"id": "train_09251", "split": "train", "clip_key": "titan_clip_261_000552_movie", "source": {"subset": "titan", "scenario": "clip_261", "frame": "000552"}, "frames": ["titan_clip_261_000552_movie_t-3.jpg", "titan_clip_261_000552_movie_t-2.jpg", "titan_clip_261_000552_movie_t-1.jpg", "titan_clip_261_000552_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "be aware of left-side obstruction", "environment_perception": "A narrow two-way urban street with one lane in each direction and no median extends ahead; the pavement looks smooth, with red-marked bicycle lanes at the edges and light traffic. Ahead on the left, a gray van is stopped at the curb, slightly encroaching into the ego lane and narrowing the passage. No other moving road users are close, while numerous parked bicycles and scooters line the right side by shopfronts.", "hazard_reasoning": "There is a gray van stopped on the left side of the road. The stopped van may obstruct the driver's view of oncoming traffic or road users, requiring the driver to be aware of this partial obstruction."}
{"id": "train_09252", "split": "train", "clip_key": "2020-0228-102841_070857_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-102841_070857_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-102841_070857_movie_t-3_augB1.jpg", "2020-0228-102841_070857_movie_t-2_augB1.jpg", "2020-0228-102841_070857_movie_t-1_augB1.jpg", "2020-0228-102841_070857_movie_t_augB1.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the construction worker", "environment_perception": "An urban street with midrise buildings lines both sides; the ego vehicle proceeds on a narrow two-way road without a median, the asphalt slightly worn, and traffic is light, slowing near a curbside work zone. Ahead, a large cement mixer truck is stopped partly in the ego lane along the right side by the construction site, narrowing the passage and setting the pace. A man wearing an orange vest, helmet, and blue shirt stands on the right within the ego lane beside cones because of repair work, watching the approach and managing the gap past the truck. Several pedestrians walk along the left sidewalk and remain off the roadway. Cones and barricades mark the work area along the right edge.", "hazard_reasoning": "There's a man standing on the right side of the road, wearing orange vest, wearing helmet, and wearing a blue shirt, in the ego lane, because of repair work. The worker and cones obstruct the lane, so the driver should manoeuvre carefully around them to avoid a collision."}
{"id": "train_09253", "split": "train", "clip_key": "2020-0129-105040_009323_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "009323"}, "frames": ["2020-0129-105040_009323_movie_t-3.jpg", "2020-0129-105040_009323_movie_t-2.jpg", "2020-0129-105040_009323_movie_t-1.jpg", "2020-0129-105040_009323_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban two-lane road with good pavement runs between office buildings, with a planted curb on the right and a short right-turn pocket; traffic is light and stopped at a signalized intersection. A white box truck directly ahead in the ego lane is stationary at the red light, holding the ego vehicle. A blue truck in the adjacent left lane is also stopped alongside, occupying that lane near the ego. A small car queues behind the blue truck slightly ahead of the ego and remains still. The overhead traffic signal shows red for the ego direction.", "hazard_reasoning": "There is a white truck stopped in front of the ego car, because of a red traffic light. The stopped truck obstructs the view of the intersection, so the driver should stop to maintain a safe distance and avoid a collision."}
{"id": "train_09254", "split": "train", "clip_key": "2020-0127-132751_001978_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "001978"}, "frames": ["2020-0127-132751_001978_movie_t-3.jpg", "2020-0127-132751_001978_movie_t-2.jpg", "2020-0127-132751_001978_movie_t-1.jpg", "2020-0127-132751_001978_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban two-way road with one lane each direction runs between tall buildings; a painted chevron buffer divides directions, the red-surfaced left lane for the ego is smooth, and same-direction flow is light while oncoming traffic is moderate. A white sedan approaches in the oncoming lane to the right, moving steadily past the buffer with no immediate interaction. Farther ahead, a bus follows in the same oncoming lane, maintaining its course and adding to opposing flow. On the right curb, a box truck is stopped near the sidewalk, narrowing the shoulder but remaining outside the travel lane. A 40 speed limit sign and a time-restricted no right turn 8-20 sign are visible on the left.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09255", "split": "train", "clip_key": "2020-0214-145407_046722_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "046722"}, "frames": ["2020-0214-145407_046722_movie_t-3.jpg", "2020-0214-145407_046722_movie_t-2.jpg", "2020-0214-145407_046722_movie_t-1.jpg", "2020-0214-145407_046722_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane approach to a signalized intersection has smooth pavement and no median, with moderate traffic queued while cross-traffic moves. A black sedan stopped in the ego lane directly ahead waits at the stop line because the traffic signal shows red, holding the ego car. A pedestrian in dark clothing crosses the zebra crossing ahead from right to left in front of the ego lane while the vehicle light is red. Vehicles on the cross street proceed through the intersection from both directions, occupying the crossing and preventing any movement from the ego approach.", "hazard_reasoning": "There is a black sedan stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to maintain a safe following distance and comply with the red signal."}
{"id": "train_09256", "split": "train", "clip_key": "2020-0226-101332_007383_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "007383"}, "frames": ["2020-0226-101332_007383_movie_t-3.jpg", "2020-0226-101332_007383_movie_t-2.jpg", "2020-0226-101332_007383_movie_t-1.jpg", "2020-0226-101332_007383_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "An urban two-way street with one lane per direction approaches a signalized intersection, marked by a solid yellow centerline and smooth pavement; traffic is light. A blue minivan directly ahead in the ego lane turns right through the intersection, momentarily blocking the ego vehicle's path. A cyclist travels along the left curb near the stop line and continues toward the intersection, potentially entering alongside the ego car. A pedestrian stands on the right corner by the railing, waiting near the crosswalk and not stepping into the roadway. A small island on the right shapes the corner as the road bends slightly.", "hazard_reasoning": "There is a blue minivan making a right turn in front of the ego car. The minivan's turning maneuver reduces the available space and may force sudden braking if the driver does not maintain a safe following distance."}
{"id": "train_09257", "split": "train", "clip_key": "2020-0227-104226_102918_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "102918"}, "frames": ["2020-0227-104226_102918_movie_t-3.jpg", "2020-0227-104226_102918_movie_t-2.jpg", "2020-0227-104226_102918_movie_t-1.jpg", "2020-0227-104226_102918_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately to avoid collision.", "environment_perception": "An urban multi-lane arterial with dry pavement carries heavy, stop-and-go traffic, and only same-direction lanes are visible. A white box truck directly ahead in the ego lane is stopped, holding the ego vehicle in place. To the left, a silver hatchback slightly ahead in the adjacent curbside lane crawls forward and may enter the ego lane in the gap ahead of the truck. On the right, a queue of cars including a black SUV and a white crossover moves slowly alongside, limiting opportunities to change lanes. A pedestrian overpass and midblock buildings frame the scene.", "hazard_reasoning": "There is a white truck stopped in the ego lane. The driver should stop immediately to avoid colliding with the stationary truck blocking the lane ahead."}
{"id": "train_09258", "split": "train", "clip_key": "2020-0127-132751_070082_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "070082"}, "frames": ["2020-0127-132751_070082_movie_t-3.jpg", "2020-0127-132751_070082_movie_t-2.jpg", "2020-0127-132751_070082_movie_t-1.jpg", "2020-0127-132751_070082_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "In an urban area, the ego vehicle approaches a blue truss bridge on a three-lane same-direction road with smooth red pavement, and traffic is heavy and largely stationary. A white van directly ahead in the ego lane is stopped because of congestion ahead, holding the ego vehicle in place. To the left, a large box truck in the neighboring lane waits near the bridge entrance, inching forward with the queue and remaining ahead of the ego vehicle. To the right, a red tarpaulin-covered light truck sits slightly ahead in the adjacent lane by the guardrail, moving slowly and occupying the space that would otherwise allow a lane change.", "hazard_reasoning": "There is a white van stopped in the ego lane because of traffic congestion ahead. The driver should stop to maintain safe distance and avoid collision."}
{"id": "train_09259", "split": "train", "clip_key": "2020-0227-104226_043324_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "043324"}, "frames": ["2020-0227-104226_043324_movie_t-3.jpg", "2020-0227-104226_043324_movie_t-2.jpg", "2020-0227-104226_043324_movie_t-1.jpg", "2020-0227-104226_043324_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "An urban multi-lane arterial carries moderate traffic on dry pavement, with at least two same-direction lanes and oncoming lanes to the right beyond a painted median. Vehicles slow toward a signalized intersection. A white hatchback directly ahead in the ego lane is stopped for a red traffic light, holding the ego vehicle. To the left, a silver microvan in the adjacent lane slows in parallel as it approaches the same stop. Farther ahead, a medium box truck in the right lane also decelerates with the queue, staying in lane.", "hazard_reasoning": "There is a white hatchback stopped in the ego lane, in front of the ego car, because of a red traffic light ahead. The driver should stop to avoid a collision with the halted vehicle at the red light."}
{"id": "train_09260", "split": "train", "clip_key": "2020-0212-102546_053200_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "053200"}, "frames": ["2020-0212-102546_053200_movie_t-3.jpg", "2020-0212-102546_053200_movie_t-2.jpg", "2020-0212-102546_053200_movie_t-1.jpg", "2020-0212-102546_053200_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban multi-lane two-way arterial with no median and dry, worn pavement approaches a signalized intersection under moderate traffic. Ahead in the ego lane, a silver van pulls away and continues through the junction under a green light, creating space in front of the ego car. In the lane to the left, a large light-green bus slightly ahead proceeds straight through the intersection, remaining alongside but not cutting in. In the lanes to the right side of the roadway, oncoming traffic includes a white flatbed truck approaching the intersection and another truck farther beyond, both separated by the center of the road. The overhead signal facing the ego direction shows green.", "hazard_reasoning": "There is a silver van driving in the ego lane, away from the ego car, because of a green traffic light. The driver should follow the vehicle ahead to maintain safe distance and be prepared for potential signal changes."}
{"id": "train_09261", "split": "train", "clip_key": "2020-0203-114632_038992_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "038992"}, "frames": ["2020-0203-114632_038992_movie_t-3.jpg", "2020-0203-114632_038992_movie_t-2.jpg", "2020-0203-114632_038992_movie_t-1.jpg", "2020-0203-114632_038992_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban arterial with two lanes in each direction runs straight, divided by a row of orange bollards; the pavement is dry and smooth and traffic is moderate. Ahead in the ego lane, a silver van moves steadily forward, occupying the ego path and setting the following gap. Slightly ahead to the right, a small white car in the adjacent same-direction lane continues straight a bit faster without drifting toward the ego lane. To the right beyond the bollards, an oncoming black sedan approaches in its lane, separated from the ego by the divider.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09262", "split": "train", "clip_key": "2020-0206-142535_009727_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "009727"}, "frames": ["2020-0206-142535_009727_movie_t-3.jpg", "2020-0206-142535_009727_movie_t-2.jpg", "2020-0206-142535_009727_movie_t-1.jpg", "2020-0206-142535_009727_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban multi-lane two-way road without a median runs between office buildings and a tree-lined park; the pavement is smooth and traffic is heavy, queuing near an intersection. A white truck is stopped directly ahead in the ego lane because of traffic congestion ahead, holding the ego vehicle. In the lane to the left, a black taxi alongside slows to a stop, limiting room for a lane change. Farther ahead in that left lane, a larger box truck also waits in the queue. On the right side of the roadway, oncoming vehicles move lightly past the intersection.", "hazard_reasoning": "There is a white truck stopped in front of the ego car in the ego lane because of traffic congestion ahead. The driver should stop to avoid a collision with the halted truck and maintain a safe following distance."}
{"id": "train_09263", "split": "train", "clip_key": "titan_clip_1299_000276_movie", "source": {"subset": "titan", "scenario": "clip_1299", "frame": "000276"}, "frames": ["titan_clip_1299_000276_movie_t-3.jpg", "titan_clip_1299_000276_movie_t-2.jpg", "titan_clip_1299_000276_movie_t-1.jpg", "titan_clip_1299_000276_movie_t.jpg"], "hazard_type": "parked_vehicle", "severity_level": "LOW", "warning_content": "Yield to avoid collision", "environment_perception": "A narrow urban side street with no centerline runs beside a large commercial building, the worn pavement curving gently right with light same-direction traffic and no oncoming vehicles visible. Ahead on the left, a dark sedan is stopped at the curb and slightly intrudes into the lane, narrowing the passage. Farther ahead on the left, another car waits at the curb, further constraining the available space for the ego vehicle to pass. On the right, a pedestrian with a backpack walks along the sidewalk by the hedge, remaining off the roadway. Another person stands near the curb beside the construction hoarding on the left, close to the parked cars and near the ego path. Temporary construction fencing lines the left side.", "hazard_reasoning": "There is a yellow sedan parked on the left side of the road, because someone is exiting the vehicle. The occupant may step into the lane or open a door unexpectedly, so the driver should yield to avoid a collision."}
{"id": "train_09264", "split": "train", "clip_key": "2020-0218-151547_028580_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "028580"}, "frames": ["2020-0218-151547_028580_movie_t-3.jpg", "2020-0218-151547_028580_movie_t-2.jpg", "2020-0218-151547_028580_movie_t-1.jpg", "2020-0218-151547_028580_movie_t.jpg"], "hazard_type": "stopped_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the stopped vehicle.", "environment_perception": "An urban arterial runs beneath an elevated structure with two same-direction lanes, smooth pavement, and light traffic. A white sedan is stopped ahead in the left curbside lane, obstructing the ego lane. Slightly beyond it, a cyclist rides forward near the lane line, reducing space to pass and remaining relevant to the ego vehicle's path. In the adjacent right lane farther ahead, a dark van continues straight and sets the pace for any merge around the blockage. Guardrails line the right and a fenced sidewalk with parked bicycles borders the left.", "hazard_reasoning": "There is a white sedan stopped on the left side of the road, in the ego lane. The stopped vehicle in your lane poses a collision risk, so the driver should carefully manoeuvre around it to maintain safe travel."}
{"id": "train_09265", "split": "train", "clip_key": "2020-0205-152530_044026_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "044026"}, "frames": ["2020-0205-152530_044026_movie_t-3.jpg", "2020-0205-152530_044026_movie_t-2.jpg", "2020-0205-152530_044026_movie_t-1.jpg", "2020-0205-152530_044026_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban bidirectional arterial with multiple same-direction lanes and no physical median runs between mid-rise buildings; the pavement appears smooth and traffic is moderate, bunching near a signalized intersection ahead. The white box truck ahead in the ego lane slows in a short queue because of congestion ahead, setting the ego vehicle's pace. A dark car in the adjacent right lane travels parallel at a similar speed while keeping its lane, not moving toward the ego path. Pedestrians near the left-side crosswalk walk along the curb and wait at the corner without stepping into the road. Overhead blue guide signs hang above the lanes approaching the junction.", "hazard_reasoning": "There is a white truck slowing down ahead of the ego-car, in the ego lane, because of traffic congestion ahead. The driver should slow down to maintain a safe following distance and respond to the congested traffic conditions."}
{"id": "train_09266", "split": "train", "clip_key": "2020-0129-144857_002668_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "002668"}, "frames": ["2020-0129-144857_002668_movie_t-3.jpg", "2020-0129-144857_002668_movie_t-2.jpg", "2020-0129-144857_002668_movie_t-1.jpg", "2020-0129-144857_002668_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-way street with one lane per direction and no median; the pavement is dry and slightly worn, and traffic flows at a moderate pace. Ahead in the ego lane, a black van slows in front of the ego car, constraining speed. In the oncoming lane to the right, a red minivan approaches close and passes by while staying in its lane. Farther ahead, a white box truck comes toward the camera steadily in the opposite lane, also holding its line. Overhead gantry signs display a posted 40 speed limit.", "hazard_reasoning": "There is a black van slowing in the ego lane, in front of the ego car. The van's deceleration could require the driver to slow down to maintain a safe distance and avoid a rear-end collision."}
{"id": "train_09267", "split": "train", "clip_key": "titan_clip_702_000270_movie", "source": {"subset": "titan", "scenario": "clip_702", "frame": "000270"}, "frames": ["titan_clip_702_000270_movie_t-3.jpg", "titan_clip_702_000270_movie_t-2.jpg", "titan_clip_702_000270_movie_t-1.jpg", "titan_clip_702_000270_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban alley with a narrow roadway and no median has smooth pavement and very light motor traffic, with movement slowed by roadside loading. A pedestrian wearing a white shirt and a backpack walks ahead along the left side away from the ego car, near the travel path. A small blue delivery cart proceeds ahead in the center, moving away and constraining the ego vehicle's pace. Two people stand on the right at a storefront near the curb, close to the lane where clearance is tight. A blue straight-ahead arrow sign is posted on the right. A white delivery truck is stopped on the left with crates on its bed, partially occupying the lane and creating an obstacle.", "hazard_reasoning": "There is a pedestrian wearing a white shirt and a backpack, walking on the left side of the road, away from the ego car. Because the pedestrian is near the travel lane and could enter the road unexpectedly, you should slow down to maintain safety."}
{"id": "train_09268", "split": "train", "clip_key": "2020-0218-151547_022589_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "022589"}, "frames": ["2020-0218-151547_022589_movie_t-3.jpg", "2020-0218-151547_022589_movie_t-2.jpg", "2020-0218-151547_022589_movie_t-1.jpg", "2020-0218-151547_022589_movie_t.jpg"], "hazard_type": "deceleration_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane road runs under an elevated expressway, the pavement looks smooth and traffic is moderate with a brief slowdown ahead. Ahead in the ego lane, a silver hatchback slows because congestion forms farther up the road, reducing the gap. In the adjacent right lane, a white minivan travels slightly ahead at a similar speed, limiting an immediate chance to pass. Farther left beyond a chevroned bay, a small van stands near the curb outside the travel lane.", "hazard_reasoning": "There is a silver hatchback slowing down in the ego lane, because of traffic congestion ahead. You should slow down to maintain a safe distance and avoid a collision."}
{"id": "train_09269", "split": "train", "clip_key": "titan_clip_698_000102_movie", "source": {"subset": "titan", "scenario": "clip_698", "frame": "000102"}, "frames": ["titan_clip_698_000102_movie_t-3.jpg", "titan_clip_698_000102_movie_t-2.jpg", "titan_clip_698_000102_movie_t-1.jpg", "titan_clip_698_000102_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "HIGH", "warning_content": "Yield to pedestrian crossing ahead", "environment_perception": "A narrow urban street with buildings close to the curb lacks lane markings or a divider, and the pavement appears smooth; there is no vehicular traffic in view. Far ahead in the middle of the roadway, a pedestrian pushing a stroller walks toward the ego car, directly along the vehicle's path. On the right edge near the camera, another pedestrian walks toward the camera along the curb, close to the lane but staying by the storefronts. No traffic signals or posted speeds are visible. A freestanding shop sign and curbside grates line the edges, slightly narrowing the passage.", "hazard_reasoning": "There is a pedestrian pushing a stroller, walking in the middle of the road, towards the ego car. The driver should yield to the pedestrian to prevent a collision as they are crossing directly ahead."}
{"id": "train_09270", "split": "train", "clip_key": "titan_clip_466_000432_movie", "source": {"subset": "titan", "scenario": "clip_466", "frame": "000432"}, "frames": ["titan_clip_466_000432_movie_t-3.jpg", "titan_clip_466_000432_movie_t-2.jpg", "titan_clip_466_000432_movie_t-1.jpg", "titan_clip_466_000432_movie_t.jpg"], "hazard_type": "crossing_pedestrian", "severity_level": "LOW", "warning_content": "Be aware of pedestrian near road", "environment_perception": "An urban shopping street features a narrow single-lane roadway paved with bricks and lined by bollards and storefronts, with clean pavement and no lane markings. Vehicle traffic is absent while pedestrian activity is heavy. Several pedestrians ahead step off the left sidewalk and cross the lane in front of the vehicle, directly in the ego path. On the left sidewalk, a pedestrian pushing a piece of luggage walks toward the road and may step into the lane. Farther ahead in the middle of the roadway, another person walks away along the lane, occupying the path and constraining pace, while others remain on the right sidewalk without encroaching.", "hazard_reasoning": "There is a pedestrian pushing a piece of luggage and walking on the sidewalk, toward the road, from the left side. The pedestrian's movement toward the roadway could result in them stepping into traffic unexpectedly, so the driver should be aware."}
{"id": "train_09271", "split": "train", "clip_key": "2020-0203-154554_041025_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "041025"}, "frames": ["2020-0203-154554_041025_movie_t-3.jpg", "2020-0203-154554_041025_movie_t-2.jpg", "2020-0203-154554_041025_movie_t-1.jpg", "2020-0203-154554_041025_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban expressway ramp runs under an elevated structure, with a single lane bounded by a concrete divider on the left and a guardrail and wall on the right; the pavement is smooth, and flow in this lane is light while traffic on the separated adjacent roadway is heavy and slow. A white truck ahead in the ego lane drives away at a steady pace, effectively setting the ego vehicle's speed. Farther ahead, a small dark car continues forward in the same lane with a noticeable gap. To the left beyond the divider, long queues of cars creep along but remain isolated from the ego path. Overhead guide signs are visible in the distance and no signals or hazards appear.", "hazard_reasoning": "No hazards are present in the scene, so the driver can maintain current speed and stay in the lane."}
{"id": "train_09272", "split": "train", "clip_key": "2020-0225-102455_077518_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "077518"}, "frames": ["2020-0225-102455_077518_movie_t-3.jpg", "2020-0225-102455_077518_movie_t-2.jpg", "2020-0225-102455_077518_movie_t-1.jpg", "2020-0225-102455_077518_movie_t.jpg"], "hazard_type": "no_hazard", "severity_level": "NONE", "warning_content": "Continue driving normally", "environment_perception": "An urban divided arterial with three lanes in the ego direction and a raised median runs straight on dry, well-kept pavement, and traffic is light and flowing. A white van travels directly ahead in the ego lane at a steady speed with no congestion and effectively sets our pace. A motorcycle slightly ahead in the left lane continues straight and could move into our lane. A tarpaulin-covered truck is ahead in the right-adjacent lane, keeping similar speed and limiting space for a right lane change. Overhead blue direction signs indicate left-turn and straight routes, and a distant traffic signal is visible down the road.", "hazard_reasoning": "There is a white van driving in the ego lane because of no traffic congestion, in front of the ego car. The driver should follow the vehicle ahead to maintain a safe distance and be prepared for sudden braking."}
{"id": "train_09273", "split": "train", "clip_key": "titan_clip_1004_000516_movie", "source": {"subset": "titan", "scenario": "clip_1004", "frame": "000516"}, "frames": ["titan_clip_1004_000516_movie_t-3.jpg", "titan_clip_1004_000516_movie_t-2.jpg", "titan_clip_1004_000516_movie_t-1.jpg", "titan_clip_1004_000516_movie_t.jpg"], "hazard_type": "roadside_pedestrian", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "An urban commercial street with brick paving forms a single undivided lane in good condition, and traffic is very light. Ahead in the middle of the road, a pedestrian wearing black pants and carrying a backpack walks away from the ego car along the center, remaining in the vehicle's path and likely dictating its pace. On the right, a white van is stopped at the curb, stationary and narrowing the lane. Along the left sidewalk, two people with umbrellas walk parallel to traffic near the curb without stepping into the roadway. No notable signals or posted speeds are visible, and no other moving vehicles appear.", "hazard_reasoning": "There is a pedestrian wearing black pants, carrying a backpack, walking in the middle of the road, away from the ego car. The driver should slow down because the pedestrian's position in the travel lane creates a high risk of collision and requires extra caution."}
{"id": "train_09274", "split": "train", "clip_key": "titan_clip_1031_000024_movie", "source": {"subset": "titan", "scenario": "clip_1031", "frame": "000024"}, "frames": ["titan_clip_1031_000024_movie_t-3.jpg", "titan_clip_1031_000024_movie_t-2.jpg", "titan_clip_1031_000024_movie_t-1.jpg", "titan_clip_1031_000024_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "A quiet residential alley with one narrow two-way lane and no centerline is visible, with clear pavement and very little traffic. The left side of the ego lane is partly obstructed by a roadside work area: a blue dump truck is stopped ahead on the left, and orange cones line that side to guide traffic and reduce the usable width. On the right, several bicycles are parked by the curb near a utility pole, but they remain stationary and do not enter the lane. A blue pedestrian sign is also mounted on the right.", "hazard_reasoning": "The main concern is the row of orange traffic cones on the left, which marks a construction area encroaching into the lane. Because the path is narrowed, the driver needs to proceed cautiously and steer around the cones to stay safe."}
{"id": "train_09275", "split": "train", "clip_key": "2020-0217-144444_011257_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "011257"}, "frames": ["2020-0217-144444_011257_movie_t-3.jpg", "2020-0217-144444_011257_movie_t-2.jpg", "2020-0217-144444_011257_movie_t-1.jpg", "2020-0217-144444_011257_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the merging yellow sedan.", "environment_perception": "This is a narrow urban two-lane street without a median, bordered by offices and trees. The road surface is clean with a few manholes, traffic is sparse, and orange cones are placed along the left shoulder near hedges. In front of the ego vehicle, a yellow sedan is moving out of the ego lane toward the left lane. Two pedestrians are visible on the right sidewalk, walking alongside the road and staying off the roadway.", "hazard_reasoning": "The main concern is the yellow sedan merging into the left lane from the ego lane. This lateral movement could interfere with the ego vehicle's path and may force the driver to slow down suddenly to avoid a conflict."}
{"id": "train_09276", "split": "train", "clip_key": "titan_clip_1031_000024_movie", "source": {"subset": "titan", "scenario": "clip_1031", "frame": "000024"}, "frames": ["titan_clip_1031_000024_movie_t-3.jpg", "titan_clip_1031_000024_movie_t-2.jpg", "titan_clip_1031_000024_movie_t-1.jpg", "titan_clip_1031_000024_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "The scene shows a narrow residential alley with a single two-way roadway and no painted centerline. The pavement is clear, traffic is sparse, and the left side of the ego lane is partly restricted by roadside work activity. A blue dump truck is stationary ahead on the left, with orange traffic cones placed along that side to guide vehicles and reduce the usable lane width. On the right, several bicycles are parked by the curb near a utility pole, but they remain still. No pedestrians or moving vehicles are visible, and a blue pedestrian sign is mounted on a pole to the right.", "hazard_reasoning": "The main risk comes from the orange cones and the partially blocked left edge, which signal a construction area narrowing the driving path. Because the lane is constrained, the driver needs to pass through carefully and keep clear of the cone-marked work zone."}
{"id": "train_09277", "split": "train", "clip_key": "titan_clip_63_000054_movie", "source": {"subset": "titan", "scenario": "clip_63", "frame": "000054"}, "frames": ["titan_clip_63_000054_movie_t-3.jpg", "titan_clip_63_000054_movie_t-2.jpg", "titan_clip_63_000054_movie_t-1.jpg", "titan_clip_63_000054_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "The scene shows a narrow two-way urban street with smooth road surface and no visible centerline or median. Traffic is sparse, and there are no nearby moving vehicles. On the right ahead, construction activity is present: a large trailer truck is parked beside a scaffolded building, with orange cones marking the area and slightly narrowing the usable roadway. A pedestrian is visible far ahead near the left side, walking away and not entering the ego lane.", "hazard_reasoning": "The main concern is the construction setup on the right, where the parked trailer truck and cones partially block the path. The vehicle should pass this area with care to avoid side contact and keep proper lane position."}
{"id": "train_09278", "split": "train", "clip_key": "2020-0213-143552_031427_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "031427"}, "frames": ["2020-0213-143552_031427_movie_t-3.jpg", "2020-0213-143552_031427_movie_t-2.jpg", "2020-0213-143552_031427_movie_t-1.jpg", "2020-0213-143552_031427_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around cones", "environment_perception": "The scene shows an urban two-way road with a single narrow lane in each direction, smooth asphalt, and no median while the ego vehicle nears a zebra crossing. A pedestrian steps into the crosswalk from the left foreground and moves across in front, with the possibility of entering the ego lane. A scooter traveling in the same direction is ahead near the centerline and is moving slowly, which slightly limits progress. On the left sidewalk, several pedestrians and workers are gathered near a small work area, and construction cones are placed along the lane edge ahead of the ego car, making the roadway a bit tighter. A yellow warning sign with a child symbol is posted on the right, and there are no visible oncoming vehicles.", "hazard_reasoning": "The main hazard is the construction cones positioned ahead of the ego vehicle. They indicate roadworks and could block part of the path or reduce visibility, so the driver should proceed cautiously and steer around them."}
{"id": "train_09279", "split": "train", "clip_key": "2020-0213-143552_031427_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "031427"}, "frames": ["2020-0213-143552_031427_movie_t-3.jpg", "2020-0213-143552_031427_movie_t-2.jpg", "2020-0213-143552_031427_movie_t-1.jpg", "2020-0213-143552_031427_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around cones", "environment_perception": "The scene shows an urban two-way road with one narrow lane in each direction, smooth pavement, and no median as the ego car nears a zebra crossing. A pedestrian is stepping into the crosswalk from the left foreground and moving across in front, which could place them in the ego lane. A scooter ahead traveling the same direction is moving slowly near the centerline, slightly limiting progress. On the left sidewalk, several pedestrians and workers are gathered near a small work area, and traffic cones are placed at the road edge ahead of the ego vehicle, making the lane feel tighter. A yellow caution sign with a child symbol is visible on a pole to the right, and there are no visible oncoming vehicles.", "hazard_reasoning": "The main hazard is the traffic cones marking construction in front of the ego car. They indicate road works ahead and may narrow the driving path or affect visibility, so the driver should proceed cautiously around them."}
{"id": "train_09280", "split": "train", "clip_key": "titan_clip_90_000162_movie", "source": {"subset": "titan", "scenario": "clip_90", "frame": "000162"}, "frames": ["titan_clip_90_000162_movie_t-3.jpg", "titan_clip_90_000162_movie_t-2.jpg", "titan_clip_90_000162_movie_t-1.jpg", "titan_clip_90_000162_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "be cautious of the cone ahead", "environment_perception": "The scene shows a broad urban shopping street with smooth pavement, tall buildings on both sides, and little traffic. Ahead, a black minivan on the right slows close to the curb near a zebra crossing, while a pedestrian in dark clothing is crossing from right to left in front of it and across the ego vehicle’s intended path. Another man is standing at the right curb by the crosswalk, looking toward the road. A traffic cone sits on the left side of the roadway near the crossing.", "hazard_reasoning": "The cone on the left edge of the road is the main concern here. Although it is a small obstacle, it can still interfere with the vehicle’s path, so the driver should stay alert and proceed carefully."}
{"id": "train_09281", "split": "train", "clip_key": "titan_clip_618_000066_movie", "source": {"subset": "titan", "scenario": "clip_618", "frame": "000066"}, "frames": ["titan_clip_618_000066_movie_t-3.jpg", "titan_clip_618_000066_movie_t-2.jpg", "titan_clip_618_000066_movie_t-1.jpg", "titan_clip_618_000066_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "The scene shows a narrow urban lane between buildings, with a dry asphalt surface and no visible divider. Traffic appears quiet, with no moving vehicles present. A pedestrian is ahead, walking away near the middle of the lane. Along the right side near the storefronts, several traffic cones and an A-frame warning sign mark the curb area, while many parked bicycles line both sides and make the road feel tighter. No signals are visible, and no other road users are affecting the lane.", "hazard_reasoning": "The main concern is the traffic cone placed on the right side of the roadway. It signals a roadside work or obstruction area, so the driver should pass with caution to avoid clipping it."}
{"id": "train_09282", "split": "train", "clip_key": "2020-0218-103119_013129_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "013129"}, "frames": ["2020-0218-103119_013129_movie_t-3.jpg", "2020-0218-103119_013129_movie_t-2.jpg", "2020-0218-103119_013129_movie_t-1.jpg", "2020-0218-103119_013129_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the white van", "environment_perception": "The scene shows a city road with two lanes heading the same way and a broad painted median, with clear pavement and sparse traffic. A white van in front shifts from the left lane into the ego lane, moving into the path ahead and narrowing the following distance. In the adjacent right lane, a dark minivan keeps going straight at a steady speed. On the far side of the median, a white van travels in the opposite direction, separated from the ego vehicle. A circular overhead sign displays 50 as the speed limit.", "hazard_reasoning": "The main concern is the white van merging into the ego lane from the left. Because it cuts in ahead and shrinks the available gap, it creates a lane-change hazard that calls for caution and extra spacing."}
{"id": "train_09283", "split": "train", "clip_key": "2020-0131-135401_022675_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "022675"}, "frames": ["2020-0131-135401_022675_movie_t-3.jpg", "2020-0131-135401_022675_movie_t-2.jpg", "2020-0131-135401_022675_movie_t-1.jpg", "2020-0131-135401_022675_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of left lane construction ahead.", "environment_perception": "The scene shows an urban multi-lane roadway bending slightly to the right with clear pavement and light traffic. To the left of the ego vehicle, a line of red cones marks off a construction section. A dark car ahead in the ego lane continues at a steady speed and appears to be leading the traffic flow. On the right, several trucks are parked along the curb with parts of their bodies extending a bit into the lane, making the available space tighter as the ego car passes by. No meaningful signs, signals, or oncoming traffic are visible.", "hazard_reasoning": "The row of red cones on the left signals active or upcoming road work in that adjacent lane. Because the coned-off area narrows the roadway, the driver should stay alert and avoid abrupt lane movements while approaching it."}
{"id": "train_09284", "split": "train", "clip_key": "2020-0205-103411_056954_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "056954"}, "frames": ["2020-0205-103411_056954_movie_t-3.jpg", "2020-0205-103411_056954_movie_t-2.jpg", "2020-0205-103411_056954_movie_t-1.jpg", "2020-0205-103411_056954_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The ego vehicle is on an urban divided arterial with three lanes in its direction of travel, staying in the left lane while a planted median separates opposing traffic on the right. Road conditions look clear and traffic is moving at a moderate pace. A white box truck ahead and slightly left shifts rightward into the ego lane through an open gap. Farther ahead, a dark hatchback in the center lane keeps going straight at about the same speed and does not affect the ego lane. A black sedan near the left curb by the crosswalk is stopped and not part of the driving path. Traffic lights are visible for the upcoming intersection.", "hazard_reasoning": "The main risk is the white truck merging from the left lane into the ego lane directly ahead. Its lane change cuts into the space in front of the ego vehicle and narrows the following gap, creating a potential need to brake. The driver should reduce speed and keep a safe distance behind it."}
{"id": "train_09285", "split": "train", "clip_key": "titan_clip_63_000054_movie", "source": {"subset": "titan", "scenario": "clip_63", "frame": "000054"}, "frames": ["titan_clip_63_000054_movie_t-3.jpg", "titan_clip_63_000054_movie_t-2.jpg", "titan_clip_63_000054_movie_t-1.jpg", "titan_clip_63_000054_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the truck", "environment_perception": "The scene shows a narrow urban two-way road with a smooth surface and no visible centerline or median, with little traffic and no close-moving vehicles. On the right side ahead, construction activity is present: a large trailer truck is parked beside a scaffolded building, with orange cones marking the area and slightly narrowing the usable roadway. A pedestrian is visible far ahead near the left edge, walking away and not moving into the ego lane.", "hazard_reasoning": "The main risk comes from the roadworks on the right, where the parked trailer truck and cones partially block the path. The driver needs to pass this obstruction with care to avoid contact and keep a safe lane position."}
{"id": "train_09286", "split": "train", "clip_key": "titan_clip_618_000066_movie", "source": {"subset": "titan", "scenario": "clip_618", "frame": "000066"}, "frames": ["titan_clip_618_000066_movie_t-3.jpg", "titan_clip_618_000066_movie_t-2.jpg", "titan_clip_618_000066_movie_t-1.jpg", "titan_clip_618_000066_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "A narrow urban street with a single lane and no center divider runs between buildings. The road surface appears dry and clear, with very little traffic and no moving vehicles present. A pedestrian is visible ahead, walking away from the camera near the middle of the lane. Along the right side by the shops, several traffic cones and an A-frame warning sign mark the curb area, and many parked bicycles are lined up on both sides, making the roadway feel tight. No traffic lights are visible, and there are no other active road users affecting the lane.", "hazard_reasoning": "The main concern is the traffic cone placed on the right side of the road. It signals a roadside obstruction, so the driver should pass carefully to avoid clipping it."}
{"id": "train_09287", "split": "train", "clip_key": "2020-0131-135401_022675_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "022675"}, "frames": ["2020-0131-135401_022675_movie_t-3.jpg", "2020-0131-135401_022675_movie_t-2.jpg", "2020-0131-135401_022675_movie_t-1.jpg", "2020-0131-135401_022675_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of left lane construction ahead.", "environment_perception": "The scene shows an urban multi-lane roadway bending slightly to the right with clear pavement and light traffic. On the left side of the ego vehicle, a line of red cones marks off part of the road as a construction zone. A dark vehicle ahead in the same lane is moving steadily and appears to be the pace-setting car. On the right curb, several trucks are parked or stopped close to the travel lane, leaving less room as the ego car passes. No clear lane signals, speed signs, or oncoming vehicles are visible.", "hazard_reasoning": "The red cones along the left side signal construction activity ahead in the adjacent lane. Because the coned area narrows that side of the roadway, the driver should treat it as a medium-risk hazard and avoid abrupt lane changes or sudden steering."}
{"id": "train_09288", "split": "train", "clip_key": "2020-0220-102630_000432_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "000432"}, "frames": ["2020-0220-102630_000432_movie_t-3.jpg", "2020-0220-102630_000432_movie_t-2.jpg", "2020-0220-102630_000432_movie_t-1.jpg", "2020-0220-102630_000432_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows a multi-lane urban road leading into a broad signalized intersection under a pedestrian overpass. The pavement is smooth, the center area has no median, and traffic appears moderate. A black sedan in front moves from the left lane into the ego lane and continues straight, becoming the main vehicle ahead. On the right, a white SUV is slightly ahead in the adjacent lane and keeps going straight without merging. Farther right, another white car remains in the outer lane and moves with the traffic flow. Railings and posts are visible along the right side near the intersection.", "hazard_reasoning": "The key hazard is the black sedan merging from the left lane into the ego lane. Because it is entering our lane and occupying the space ahead, it creates a potential conflict and reduces safe following distance, so slowing down is the appropriate response."}
{"id": "train_09289", "split": "train", "clip_key": "2020-0212-102546_073651_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "073651"}, "frames": ["2020-0212-102546_073651_movie_t-3.jpg", "2020-0212-102546_073651_movie_t-2.jpg", "2020-0212-102546_073651_movie_t-1.jpg", "2020-0212-102546_073651_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "This is an urban two-way street with a single lane in each direction, separated by a narrow raised median with shrubs and a fence. The road surface looks dry and clear, and the area has light traffic near mid-rise apartment buildings. In front of the ego vehicle, a yellow construction vehicle is moving slowly in the same lane and is centered ahead, limiting forward progress. On the opposite side of the divider, a white box truck and a black van are traveling toward the camera in their own lane and do not interfere with the ego path.", "hazard_reasoning": "The main concern is the yellow construction vehicle traveling ahead in the ego lane. Because it is occupying the lane and moving slowly, the driver should stay behind it at a safe distance and proceed carefully, especially near the partially hidden curve."}
{"id": "train_09290", "split": "train", "clip_key": "titan_clip_758_000084_movie", "source": {"subset": "titan", "scenario": "clip_758", "frame": "000084"}, "frames": ["titan_clip_758_000084_movie_t-3.jpg", "titan_clip_758_000084_movie_t-2.jpg", "titan_clip_758_000084_movie_t-1.jpg", "titan_clip_758_000084_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "The scene shows an urban road bordered by tall buildings, with a narrow driving lane and a broad zebra crossing ahead. The surface is dry and slightly cracked, and there are no vehicles directly in front. A red traffic cone is positioned along the left edge of the ego lane, while additional cones and orange mesh fencing on the right mark a work area that reduces the available roadway. A pedestrian near the left crosswalk stays on the sidewalk, and several people farther ahead remain behind the barriers.", "hazard_reasoning": "The main issue is the red cone sitting in the ego lane ahead on the left. Because it blocks part of the travel path, it creates a construction-related obstruction that the driver should pass cautiously to avoid contact."}
{"id": "train_09291", "split": "train", "clip_key": "2020-0212-102546_073651_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "073651"}, "frames": ["2020-0212-102546_073651_movie_t-3.jpg", "2020-0212-102546_073651_movie_t-2.jpg", "2020-0212-102546_073651_movie_t-1.jpg", "2020-0212-102546_073651_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a dry urban two-way street with one lane in each direction, separated by a narrow raised median with shrubs and a fence. Mid-rise apartment buildings line the road, and traffic is sparse. In the ego lane ahead, a yellow construction vehicle is moving slowly near the lane center and limiting the vehicle’s forward progress. On the far side of the divider to the right, a white box truck and a black van are traveling toward us in the opposite lane and do not interfere with the ego path.", "hazard_reasoning": "The main concern is the yellow construction vehicle occupying the ego lane ahead. It requires the driver to continue behind it at a cautious distance, since it is constraining movement and may create risk near the hidden curve ahead."}
{"id": "train_09292", "split": "train", "clip_key": "2020-0213-143552_009687_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009687"}, "frames": ["2020-0213-143552_009687_movie_t-3.jpg", "2020-0213-143552_009687_movie_t-2.jpg", "2020-0213-143552_009687_movie_t-1.jpg", "2020-0213-143552_009687_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the sedan changing lanes ahead", "environment_perception": "This is an urban two-way street with left-hand traffic, two lanes moving in the same direction, and no median. The road surface is clear, but orange cones and a standing sign are constricting the ego lane. A black sedan ahead is moving out of the ego lane into the right lane. In the right lane, a silver hatchback continues forward steadily. An oncoming white truck is visible in the opposite lane, and several parked vans are farther ahead along the curb without affecting the active lanes.", "hazard_reasoning": "The main concern is the black sedan ahead shifting from the ego lane into the right lane. Because it is merging in front of the ego vehicle, it could move into your path and create a conflict, so the safest response is to stay alert and keep a safe following distance."}
{"id": "train_09293", "split": "train", "clip_key": "2020-0210-155354_035874_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "035874"}, "frames": ["2020-0210-155354_035874_movie_t-3.jpg", "2020-0210-155354_035874_movie_t-2.jpg", "2020-0210-155354_035874_movie_t-1.jpg", "2020-0210-155354_035874_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "This is an urban multi-lane arterial with three lanes in the ego direction, smooth pavement, and dense stop-and-go traffic. Right ahead, a black hatchback in the ego lane is crawling and braking, leading the flow. A little farther ahead, a black sedan is moving from the ego lane into the left lane as a gap appears there, shifting across in front of the ego vehicle. In the far-left lane near the curb, a white van is also moving slowly beside the traffic. Blue overhead destination signs are visible above the roadway.", "hazard_reasoning": "The main hazard is the black sedan changing lanes from the ego lane into the left lane. Since space has opened in that lane, it is edging over in a way that could cut across the ego vehicle’s path. That unexpected lane change creates a collision risk, so stopping is the safest response."}
{"id": "train_09294", "split": "train", "clip_key": "2020-0220-102630_113213_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "113213"}, "frames": ["2020-0220-102630_113213_movie_t-3.jpg", "2020-0220-102630_113213_movie_t-2.jpg", "2020-0220-102630_113213_movie_t-1.jpg", "2020-0220-102630_113213_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of white sedan pulling out", "environment_perception": "The scene shows a light-traffic urban two-way road with a solid centerline and a gentle left bend between mid-rise buildings. A dark vehicle is driving ahead in the ego lane at a steady speed. On the left at a side street, a white sedan has pulled out to the edge and remains there, appearing ready to merge into the main road. A bicyclist is also visible near the right curb, moving forward in the same direction close to the roadside.", "hazard_reasoning": "The main concern is the white sedan on the left side road, which has pulled out and stopped at the edge. It could enter the lane and interfere with the ego vehicle's path, so it should be treated as the primary hazard."}
{"id": "train_09295", "split": "train", "clip_key": "titan_clip_758_000084_movie", "source": {"subset": "titan", "scenario": "clip_758", "frame": "000084"}, "frames": ["titan_clip_758_000084_movie_t-3.jpg", "titan_clip_758_000084_movie_t-2.jpg", "titan_clip_758_000084_movie_t-1.jpg", "titan_clip_758_000084_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "The scene shows an urban road bordered by tall buildings, with a single narrow travel lane and a broad zebra crosswalk ahead. The pavement looks dry and cracked, and there is little traffic, with no vehicle directly in front. A red traffic cone is positioned near the left edge of the ego lane just ahead, and additional cones plus orange mesh fencing run along the right side, indicating a work zone that reduces the available roadway. A pedestrian on the left side near the crosswalk continues along the sidewalk parallel to the street without stepping into the lane, while several people farther ahead stay behind the barriers near the construction area.", "hazard_reasoning": "The main hazard is the red traffic cone placed on the left side of the ego lane ahead of the vehicle. Because it obstructs part of the driving path, the driver needs to steer carefully around it to prevent contact."}
{"id": "train_09296", "split": "train", "clip_key": "titan_clip_63_000144_movie", "source": {"subset": "titan", "scenario": "clip_63", "frame": "000144"}, "frames": ["titan_clip_63_000144_movie_t-3.jpg", "titan_clip_63_000144_movie_t-2.jpg", "titan_clip_63_000144_movie_t-1.jpg", "titan_clip_63_000144_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "The scene shows a narrow urban two-way side street bordered closely by buildings, with no centerline and light traffic as the vehicle moves ahead. A large construction truck is parked on the right near the curb, partly taking up the road and reducing the available driving space. Orange traffic cones line the right side, including one close to the vehicle, indicating a work zone. Far ahead on the left edge, a pedestrian is walking away and not into the lane, and there are no oncoming vehicles.", "hazard_reasoning": "The main concern is the cone on the right, which signals a roadside obstruction linked to the parked construction truck. This creates a lane narrowing, so the driver should pass with caution around the marked area."}
{"id": "train_09297", "split": "train", "clip_key": "2020-0217-144444_012183_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "012183"}, "frames": ["2020-0217-144444_012183_movie_t-3.jpg", "2020-0217-144444_012183_movie_t-2.jpg", "2020-0217-144444_012183_movie_t-1.jpg", "2020-0217-144444_012183_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "The scene shows a city street bordered by tall buildings and storefronts, with a smooth single-lane road curving to the right. A low hedge median sits on the right side, and a fenced sidewalk runs along the left. Traffic is sparse, with a dark car moving ahead in the ego lane and a few more vehicles farther up the road. Pedestrians are visible on the left sidewalk walking in the same direction as traffic. An orange traffic cone stands near the left curb edge of the lane, slightly reducing the available driving space.", "hazard_reasoning": "The orange cone indicates a construction-related obstruction at the lane edge. It creates a minor narrowing, so the driver should slow down and pass carefully to avoid entering the work area."}
{"id": "train_09298", "split": "train", "clip_key": "2020-0204-150838_066397_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "066397"}, "frames": ["2020-0204-150838_066397_movie_t-3.jpg", "2020-0204-150838_066397_movie_t-2.jpg", "2020-0204-150838_066397_movie_t-1.jpg", "2020-0204-150838_066397_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck changing lanes.", "environment_perception": "The scene shows a light-traffic urban divided road with two same-direction lanes, gently bending to the right beside a guardrail and an elevated viaduct. Ahead, a gray flatbed truck in the ego lane moves left across the dashed line into the adjacent left lane, momentarily affecting the vehicle’s path as it merges. A white van farther ahead in the left lane keeps a steady course and passes alongside as the truck completes the maneuver. No notable signs, signals, roadworks, or other obstacles are visible.", "hazard_reasoning": "The main hazard is the gray truck merging left from the ego lane into the neighboring lane. Because it is shifting across into the adjacent lane, it may interfere with the ego vehicle’s space, so the driver should watch it carefully."}
{"id": "train_09299", "split": "train", "clip_key": "titan_clip_63_000144_movie", "source": {"subset": "titan", "scenario": "clip_63", "frame": "000144"}, "frames": ["titan_clip_63_000144_movie_t-3.jpg", "titan_clip_63_000144_movie_t-2.jpg", "titan_clip_63_000144_movie_t-1.jpg", "titan_clip_63_000144_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "The scene shows a narrow urban two-way street lined closely by buildings on both sides, with no centerline and light traffic as the vehicle moves ahead. To the right, a large construction truck is parked partly in the roadway, reducing the available lane space. Several orange cones line the right edge, including one close to the camera, indicating a work zone. A pedestrian is far ahead on the left side, walking away and not moving into the vehicle’s path. There are no oncoming vehicles.", "hazard_reasoning": "The right side cone signals a roadside obstruction associated with the parked truck and work area. Because it narrows the lane, the driver needs to pass it with caution and keep clear of the obstacle."}
{"id": "train_09300", "split": "train", "clip_key": "titan_clip_535_000102_movie", "source": {"subset": "titan", "scenario": "clip_535", "frame": "000102"}, "frames": ["titan_clip_535_000102_movie_t-3.jpg", "titan_clip_535_000102_movie_t-2.jpg", "titan_clip_535_000102_movie_t-1.jpg", "titan_clip_535_000102_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "This is an urban residential street with a narrow two-way roadway and no center line, flanked by buildings and railings on both sides. The surface is smooth asphalt, and traffic appears sparse with no moving vehicles ahead. Along the right curb, several stacks of traffic cones are placed, slightly reducing the usable road width. A white van is parked back in a recessed garage area on the right and does not protrude into the lane. The road continues uphill and curves left in the distance between shops, with no pedestrians or oncoming vehicles affecting the ego path.", "hazard_reasoning": "The main concern is the group of traffic cones on the right side of the road. They indicate possible road work or a partial lane obstruction, so the driver should pass them with care and keep clear of the narrowed edge to avoid contact."}
{"id": "train_09301", "split": "train", "clip_key": "2020-0210-155354_020274_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "020274"}, "frames": ["2020-0210-155354_020274_movie_t-3.jpg", "2020-0210-155354_020274_movie_t-2.jpg", "2020-0210-155354_020274_movie_t-1.jpg", "2020-0210-155354_020274_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is an urban roadway with two lanes going in the ego direction and no median, lined by mid-rise buildings. The road surface looks smooth and traffic is moderate. A white van ahead in the ego lane shifts right into the next lane as space opens ahead. Another white van farther up remains in the right lane and keeps going straight. A scooter is moving along the far right near the curb beside a work area marked by orange netting, and it may join the right lane. A straight-ahead regulatory sign stands on the left.", "hazard_reasoning": "The main concern is the white van directly ahead moving from the ego lane into the right lane. Because it is merging into an occupied lane, the ego vehicle may need to slow down to preserve following distance and reduce the chance of a collision."}
{"id": "train_09302", "split": "train", "clip_key": "2020-0228-150133_002108_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "002108"}, "frames": ["2020-0228-150133_002108_movie_t-3.jpg", "2020-0228-150133_002108_movie_t-2.jpg", "2020-0228-150133_002108_movie_t-1.jpg", "2020-0228-150133_002108_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "This is an urban two-way roadway with one lane in each direction separated by a narrow raised median. The road surface is dry, traffic in the ego lane is moving slowly, and vehicles coming the opposite way are flowing steadily. A white box truck ahead in the same lane is slowing down, which limits forward progress. Near the left curb, a small flatbed truck is stopped and a traffic cone sits along the left edge, making the available lane narrower. On the far side of the median, oncoming traffic, including a cyclist near the curb and a white SUV, continues past without entering the ego lane.", "hazard_reasoning": "The main hazard is the traffic cone placed on the left side of the road. Because it intrudes near the lane boundary, it creates an obstruction that the driver must pass cautiously to avoid contact and keep a safe trajectory."}
{"id": "train_09303", "split": "train", "clip_key": "titan_clip_535_000102_movie", "source": {"subset": "titan", "scenario": "clip_535", "frame": "000102"}, "frames": ["titan_clip_535_000102_movie_t-3.jpg", "titan_clip_535_000102_movie_t-2.jpg", "titan_clip_535_000102_movie_t-1.jpg", "titan_clip_535_000102_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "This is a quiet urban residential street with one narrow two-way lane and no center line, lined by buildings and railings over smooth pavement. Traffic is sparse, and there are no moving vehicles ahead. On the right edge, several stacks of traffic cones are placed along the curb, reducing the usable roadway slightly. A white van is parked back in a recessed garage on the right and does not protrude into the lane. The road continues uphill and curves left in the distance, with no pedestrians or oncoming vehicles affecting the ego route.", "hazard_reasoning": "The main visible concern is the group of cones on the right side of the road. They indicate possible road work or a partial lane blockage, creating a minor obstruction that the driver should pass carefully to avoid contact."}
{"id": "train_09304", "split": "train", "clip_key": "2020-0210-155354_034832_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "034832"}, "frames": ["2020-0210-155354_034832_movie_t-3.jpg", "2020-0210-155354_034832_movie_t-2.jpg", "2020-0210-155354_034832_movie_t-1.jpg", "2020-0210-155354_034832_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging vehicle", "environment_perception": "This is a multi-lane urban road with dry pavement and congested, slow traffic moving in the same direction. A black hatchback directly ahead is drifting from the ego lane toward the left lane, riding over the lane marking as it merges and temporarily limiting the ego vehicle’s progress. In the left lane a little farther ahead, a white van is also moving slowly in the queue, narrowing the available opening for that hatchback. In the right lane ahead, a dark sedan continues at roughly the same slow speed as the ego car. Blue overhead direction signs provide route guidance.", "hazard_reasoning": "The main hazard is the black hatchback ahead transitioning from the ego lane into the left lane. Because it is merging across the lane line, it could cut in and force the driver to adjust speed or steer to maintain safe spacing."}
{"id": "train_09305", "split": "train", "clip_key": "titan_clip_692_000462_movie", "source": {"subset": "titan", "scenario": "clip_692", "frame": "000462"}, "frames": ["titan_clip_692_000462_movie_t-3.jpg", "titan_clip_692_000462_movie_t-2.jpg", "titan_clip_692_000462_movie_t-1.jpg", "titan_clip_692_000462_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the merging hatchback", "environment_perception": "The scene shows an urban two-way multi-lane road without a median, with smooth pavement and moderate traffic nearing a broad intersection. The ego vehicle is traveling in the leftmost lane for its direction. A white hatchback ahead moves from the middle lane into the ego lane, drifting left and reducing speed slightly, which could affect the ego vehicle’s progress. Along the near left curb, a white van is stopped with its sliding door open and a person standing beside it, creating a roadside obstruction. In the adjacent lanes, a beige car and other vehicles continue slowly or make turns at the intersection without entering the ego path. Pedestrians are present on the sidewalks.", "hazard_reasoning": "The main hazard is the white hatchback merging into the ego lane directly ahead of the camera vehicle. Since it is moving into the same lane, the driver needs to yield and maintain space to avoid a possible collision."}
{"id": "train_09306", "split": "train", "clip_key": "2020-0127-132751_003604_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "003604"}, "frames": ["2020-0127-132751_003604_movie_t-3.jpg", "2020-0127-132751_003604_movie_t-2.jpg", "2020-0127-132751_003604_movie_t-1.jpg", "2020-0127-132751_003604_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "The scene shows an urban single-lane road bending to the right between mid-rise buildings, with a concrete wall on the right and a sidewalk on the left. The road surface is clear and traffic is sparse, with no vehicle immediately in front. On the left ahead, roadworks tighten the lane: cones and temporary signs guide traffic past a small work truck, and workers are positioned near the taper, including one directing vehicles. A person holding a bicycle and another pedestrian stand by the railing on the left sidewalk near the narrowed section, but they stay outside the travel lane. A car on a lower parallel road to the right moves away behind a barrier and does not influence the ego lane. The right curve and construction area restrict the forward view.", "hazard_reasoning": "The main hazard is the construction zone along the left side of the road. It narrows the usable lane and places obstacles and workers close to passing traffic, so the driver needs to proceed carefully and maneuver around the area."}
{"id": "train_09307", "split": "train", "clip_key": "2020-0228-150133_002108_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "002108"}, "frames": ["2020-0228-150133_002108_movie_t-3.jpg", "2020-0228-150133_002108_movie_t-2.jpg", "2020-0228-150133_002108_movie_t-1.jpg", "2020-0228-150133_002108_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "This is an urban two-way road with one lane in each direction and a narrow raised median between them. The road surface is dry, traffic in the ego lane is moving slowly, and vehicles in the opposite direction are flowing steadily. A white box truck ahead in the same lane is also slowing down, reducing available space. Near the left curb up ahead, a small flatbed truck is parked and a traffic cone sits along the left edge, tightening the passage. On the far side of the median, oncoming traffic, including a cyclist near the curb and a white SUV, continues without entering the ego path.", "hazard_reasoning": "The main hazard is the traffic cone positioned on the left side of the road. Because it creates an obstacle close to the lane boundary, the driver needs to pass with caution to avoid striking it and to keep a safe line through the narrowing lane."}
{"id": "train_09308", "split": "train", "clip_key": "titan_clip_820_000180_movie", "source": {"subset": "titan", "scenario": "clip_820", "frame": "000180"}, "frames": ["titan_clip_820_000180_movie_t-3.jpg", "titan_clip_820_000180_movie_t-2.jpg", "titan_clip_820_000180_movie_t-1.jpg", "titan_clip_820_000180_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "This is a narrow two-way urban back street with no centerline, dry pavement, and very light traffic; there are no moving vehicles directly ahead or approaching. On the right by a building entrance, a pedestrian is standing at the curb while looking at a phone, close enough to the roadway to be a potential concern. Two other pedestrians are farther ahead on the left side, walking away along the roadside and not stepping into the lane. Near the left parking-area exit, a silver van and a white car are parked and stationary. Orange traffic cones run along the right edge, reducing the usable space beside the building.", "hazard_reasoning": "The main hazard is the line of traffic cones on the right, which marks a temporary restricted area and narrows the driving space. The vehicle should pass cautiously and avoid drifting into the coned-off section to prevent contact with the barrier."}
{"id": "train_09309", "split": "train", "clip_key": "titan_clip_820_000180_movie", "source": {"subset": "titan", "scenario": "clip_820", "frame": "000180"}, "frames": ["titan_clip_820_000180_movie_t-3.jpg", "titan_clip_820_000180_movie_t-2.jpg", "titan_clip_820_000180_movie_t-1.jpg", "titan_clip_820_000180_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "This is an urban side street with a narrow two-way roadway and no centerline marking. The pavement appears dry and clear, and there is little traffic, with no vehicles moving ahead or coming toward the camera. On the right side near a building entrance, a pedestrian is standing at the curb while looking at a phone, close enough to the lane that he could step into the vehicle path. Further ahead on the left edge, two pedestrians are walking away along the roadside without entering the roadway. At the left parking area entrance, a silver van and a white car are stopped beside the lane near the exit. Orange traffic cones run along the right side of the road, reducing the available space next to the building.", "hazard_reasoning": "The main hazard is the row of cones on the right side, which marks a temporary work zone or barrier. The driver needs to pass carefully around them to stay out of the restricted area and avoid contact with the cones or the roadside obstruction."}
{"id": "train_09310", "split": "train", "clip_key": "2020-0217-144444_012183_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "012183"}, "frames": ["2020-0217-144444_012183_movie_t-3.jpg", "2020-0217-144444_012183_movie_t-2.jpg", "2020-0217-144444_012183_movie_t-1.jpg", "2020-0217-144444_012183_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "This is an urban roadway bordered by tall buildings and storefronts, with a smooth single lane bending to the right. There is a low hedge median on the right and a fenced sidewalk on the left, while overall traffic remains light. A dark car is moving ahead in the ego lane through the curve at a moderate speed, with a few more vehicles farther in front traveling the same direction. Pedestrians are visible on the left sidewalk walking parallel to the street. An orange traffic cone sits near the left curb edge of the lane, reducing the available lane width slightly.", "hazard_reasoning": "The orange traffic cone on the left side of the lane indicates a roadwork-related obstacle. It requires the driver to reduce speed and pass carefully to stay clear of the construction area."}
{"id": "train_09311", "split": "train", "clip_key": "2020-0203-114632_066342_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "066342"}, "frames": ["2020-0203-114632_066342_movie_t-3.jpg", "2020-0203-114632_066342_movie_t-2.jpg", "2020-0203-114632_066342_movie_t-1.jpg", "2020-0203-114632_066342_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of truck merging right", "environment_perception": "The scene shows an elevated urban bridge with a two-way multi-lane roadway, marked by double orange centerlines and clear pavement. Traffic is sparse and moving normally. Ahead of the ego vehicle, a white truck is drifting right as if merging into the next lane. Across the divider, several oncoming vehicles, including a blue truck, are traveling steadily toward the camera and do not interfere with the ego lane. A yellow diamond merge-warning sign is visible on the left, along with large white caution markings on the road.", "hazard_reasoning": "The main concern is the white truck ahead changing into the right lane. Because its lateral movement could intrude into the ego vehicle’s path, the driver should stay alert and be ready to respond."}
{"id": "train_09312", "split": "train", "clip_key": "2020-0127-132751_003604_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "003604"}, "frames": ["2020-0127-132751_003604_movie_t-3.jpg", "2020-0127-132751_003604_movie_t-2.jpg", "2020-0127-132751_003604_movie_t-1.jpg", "2020-0127-132751_003604_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "The scene shows an urban single-lane road bending to the right, bordered by a concrete wall on the right and a sidewalk on the left. The road surface is clear and traffic is sparse, with no car immediately in front. Up ahead on the left, roadworks narrow the passage: cones and temporary signs guide vehicles around a small work truck, while workers stand near the taper and one appears to be directing traffic. On the left sidewalk next to the work area, a person holding a bicycle and another pedestrian remain by the railing close to the narrowed section but stay outside the lane. A vehicle on a lower parallel road to the right moves away behind a barrier and does not interfere with the ego lane. The curve to the right and the construction zone both reduce forward visibility.", "hazard_reasoning": "The main hazard is the construction activity along the left side of the road. It constrains lane space and places obstacles and workers near moving traffic, so the driver needs to proceed cautiously and steer around the work zone."}
{"id": "train_09313", "split": "train", "clip_key": "titan_clip_820_000036_movie", "source": {"subset": "titan", "scenario": "clip_820", "frame": "000036"}, "frames": ["titan_clip_820_000036_movie_t-3.jpg", "titan_clip_820_000036_movie_t-2.jpg", "titan_clip_820_000036_movie_t-1.jpg", "titan_clip_820_000036_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "be cautious of cones ahead", "environment_perception": "The scene is a narrow two-way urban road with no painted centerline and a smooth surface, while the ego vehicle continues forward. On the left side ahead, a pedestrian near the fenced edge is moving into the street toward the right, so they could enter the driving path. On the right, another person is standing still near a building entrance beside a line of traffic cones along the curb. A small van is also parked farther ahead on the left curb, leaving less room in the lane.", "hazard_reasoning": "The most relevant hazard is the row of traffic cones on the right. They suggest a work zone or roadside obstruction that may reduce usable road width and require the driver to slow down and position the vehicle carefully."}
{"id": "train_09314", "split": "train", "clip_key": "titan_clip_1031_000090_movie", "source": {"subset": "titan", "scenario": "clip_1031", "frame": "000090"}, "frames": ["titan_clip_1031_000090_movie_t-3.jpg", "titan_clip_1031_000090_movie_t-2.jpg", "titan_clip_1031_000090_movie_t-1.jpg", "titan_clip_1031_000090_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A narrow residential street with a smooth surface and no centerline stretches ahead, with no moving traffic in view. On the left side farther ahead, a blue construction truck is parked in a work area, taking up part of the lane edge. Several orange cones, including one near the foreground, mark the roadside construction zone and its barriers/materials. On the right curb nearby, a few bicycles are parked outside the driving path, and a blue pedestrian sign with a 7:30-8:30 supplemental plate stands on a pole to the right.", "hazard_reasoning": "The visible orange cone on the left confirms an active construction area. The parked truck and cones narrow the roadway and may hide obstacles, so the driver should proceed carefully and reduce speed."}
{"id": "train_09315", "split": "train", "clip_key": "2020-0127-132751_068268_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "068268"}, "frames": ["2020-0127-132751_068268_movie_t-3.jpg", "2020-0127-132751_068268_movie_t-2.jpg", "2020-0127-132751_068268_movie_t-1.jpg", "2020-0127-132751_068268_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a well-marked urban two-way road with several lanes and red-painted center markings, and the surface looks clear and smooth. A white van is immediately ahead in the ego lane and is moving into the lane in front of the ego vehicle while the space ahead of it stays open. Slightly ahead on the right, a dark minivan continues along the adjacent same-direction lane and does not interfere with the ego car’s route. Farther right, two oncoming vehicles are visible in their lanes, separated from the ego lane by the center markings. A signalized intersection with overhead lights and roadside railings is visible ahead.", "hazard_reasoning": "The main hazard is the white van merging into the ego lane directly ahead, taking advantage of the clear road in front. This creates a need to slow down and keep a safe gap, since the vehicle ahead has shifted into the path of travel."}
{"id": "train_09316", "split": "train", "clip_key": "2020-0131-135401_013322_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "013322"}, "frames": ["2020-0131-135401_013322_movie_t-3.jpg", "2020-0131-135401_013322_movie_t-2.jpg", "2020-0131-135401_013322_movie_t-1.jpg", "2020-0131-135401_013322_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows a light-traffic urban two-way street with one lane in each direction, bordered by mid- and high-rise buildings and divided by a solid yellow centerline. The road surface is dry and clear. A white van is visible ahead in the opposite lane, and as it reaches the intersection it moves left into the left-side lane on its own side of the road while staying away from the ego lane. A signalized intersection is further ahead, and there are no pedestrians, cyclists, or roadside obstacles in view.", "hazard_reasoning": "The main risk is the white van changing lanes in the middle of the intersection from the oncoming side toward the left-side lane. Although it is not yet in the ego lane, this maneuver could create an unexpected conflict near the intersection, so reducing speed is the safest response to avoid a possible collision."}
{"id": "train_09317", "split": "train", "clip_key": "titan_clip_820_000036_movie", "source": {"subset": "titan", "scenario": "clip_820", "frame": "000036"}, "frames": ["titan_clip_820_000036_movie_t-3.jpg", "titan_clip_820_000036_movie_t-2.jpg", "titan_clip_820_000036_movie_t-1.jpg", "titan_clip_820_000036_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "be cautious of cones ahead", "environment_perception": "The scene shows a narrow urban two-way street with smooth pavement and no centerline, while the ego vehicle continues forward. On the left, a pedestrian near the fenced lane is moving into the road toward the right, possibly drifting into the vehicle’s path. On the right, one person remains still at a building entrance next to a line of traffic cones along the curb. A small van is also stopped along the left curb ahead, leaving less room for travel.", "hazard_reasoning": "The most notable hazard is the row of traffic cones on the right side, which suggests road construction. This can reduce the available driving space and may force the driver to slow down and shift position carefully."}
{"id": "train_09318", "split": "train", "clip_key": "titan_clip_1031_000090_movie", "source": {"subset": "titan", "scenario": "clip_1031", "frame": "000090"}, "frames": ["titan_clip_1031_000090_movie_t-3.jpg", "titan_clip_1031_000090_movie_t-2.jpg", "titan_clip_1031_000090_movie_t-1.jpg", "titan_clip_1031_000090_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is a narrow residential urban road with smooth pavement and no centerline, and there are no moving vehicles ahead. On the left side in the distance, a blue construction truck is parked in a work area, taking up part of the lane space. Several orange cones, including one near the foreground, mark the roadside construction zone with barriers and materials. Near the right curb, a couple of bicycles are parked outside the travel path, and a blue pedestrian sign with a 7:30-8:30 supplemental plate stands on the right.", "hazard_reasoning": "The orange cone on the left indicates active roadworks, and the parked truck plus cones reduce the usable roadway. This construction area also creates potential blind spots, so the driver should slow down."}
{"id": "train_09319", "split": "train", "clip_key": "2020-0131-135401_038606_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "038606"}, "frames": ["2020-0131-135401_038606_movie_t-3.jpg", "2020-0131-135401_038606_movie_t-2.jpg", "2020-0131-135401_038606_movie_t-1.jpg", "2020-0131-135401_038606_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "This is an urban two-way street with a solid yellow centerline and clear pavement, showing light traffic moving in both directions. A white hatchback ahead is shifting from the left lane into the ego lane to get around a parked vehicle by the left curb, placing it directly in front of the ego car and reducing available space. Oncoming vehicles are visible in the opposite lane, and another small car continues straight farther ahead in the ego lane. A 40 speed limit sign is overhead, and metal railings run along both sides of the road, while the parked car on the left creates a brief obstruction.", "hazard_reasoning": "The main hazard is the white hatchback merging into the ego lane from the left lane because of the parked vehicle. This lane change creates a need for the ego driver to slow and keep distance, since the vehicle ahead may affect the path and pace of travel."}
{"id": "train_09320", "split": "train", "clip_key": "titan_clip_1298_000438_movie", "source": {"subset": "titan", "scenario": "clip_1298", "frame": "000438"}, "frames": ["titan_clip_1298_000438_movie_t-3.jpg", "titan_clip_1298_000438_movie_t-2.jpg", "titan_clip_1298_000438_movie_t-1.jpg", "titan_clip_1298_000438_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around construction work.", "environment_perception": "This is a narrow urban street with shops and trees, a single unmarked lane, no median, and dry pavement, with little traffic and no vehicles moving ahead or coming toward us. Construction activity is present on the left side, where a crane truck and other work vehicles are stopped behind orange cones, narrowing the available roadway. A blue truck is also parked partly in the lane near the ego vehicle on the left, leaving less room and pushing the passable space to the right. On the right sidewalk, a pedestrian near a shop entrance is walking along the storefronts but stays on the sidewalk. The left curb is marked by cones and cut branches, and there are no visible traffic lights or speed limit signs.", "hazard_reasoning": "The main hazard is the construction zone on the left. Because the work vehicles, cones, and the parked truck reduce road width and visibility, the driver needs to proceed cautiously around the area to avoid obstacles and keep pedestrians safe."}
{"id": "train_09321", "split": "train", "clip_key": "titan_clip_673_000150_movie", "source": {"subset": "titan", "scenario": "clip_673", "frame": "000150"}, "frames": ["titan_clip_673_000150_movie_t-3.jpg", "titan_clip_673_000150_movie_t-2.jpg", "titan_clip_673_000150_movie_t-1.jpg", "titan_clip_673_000150_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "This is a narrow two-way residential street with no centerline, running toward a railway level crossing. The road surface looks worn and the markings are faded, with little traffic around. A bicyclist is ahead in the center of the lane, moving slowly toward the tracks and setting the pace. On the left, a person stands beside the fence near the crossing equipment at the road edge. The crossbucks and lights are visible, and the left-side barrier is rising as the crossing clears. A tarp-covered car is parked on the right next to a building, which tightens the roadside but does not block the lane.", "hazard_reasoning": "The main concern is the lifting level-cross barrier on the left, which shows the crossing is still active. Because it is opening, conditions could change again or a train could still be involved, so the driver should wait until the barrier is fully up and the signal is clear before proceeding."}
{"id": "train_09322", "split": "train", "clip_key": "2020-0205-152530_040042_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "040042"}, "frames": ["2020-0205-152530_040042_movie_t-3.jpg", "2020-0205-152530_040042_movie_t-2.jpg", "2020-0205-152530_040042_movie_t-1.jpg", "2020-0205-152530_040042_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the merging black sedan", "environment_perception": "This is an urban commercial road with several lanes moving in the same direction, clear lane markings, and no median. The pavement looks smooth and traffic is moderate and steady. Directly ahead, a black sedan shifts from the ego lane into the right lane in front of the ego vehicle, momentarily reducing the available space. In that right lane, a black hatchback is already traveling straight at a similar pace, taking the position the sedan moves into. Farther ahead in the center lanes, a white van continues straight and appears to be setting the flow for nearby traffic.", "hazard_reasoning": "The main concern is the black sedan merging from the ego lane into the right lane ahead of the ego car. Because it is moving into the path ahead, the driver may need to slow down or make a slight steering adjustment to keep a safe following distance."}
{"id": "train_09323", "split": "train", "clip_key": "titan_clip_318_000048_movie", "source": {"subset": "titan", "scenario": "clip_318", "frame": "000048"}, "frames": ["titan_clip_318_000048_movie_t-3.jpg", "titan_clip_318_000048_movie_t-2.jpg", "titan_clip_318_000048_movie_t-1.jpg", "titan_clip_318_000048_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the van merging ahead", "environment_perception": "The scene shows a narrow urban commercial road with one lane in each direction and no median, with smooth pavement and slow-moving traffic ahead. A black van close ahead on the left is moving into the ego lane from the side, apparently merging because of congestion and then matching the queue’s pace. Farther ahead, a white sedan in the same lane is crawling and briefly stopping with the line of vehicles, leaving only a small gap. On the right sidewalk, two pedestrians continue along the curb without entering the roadway, while stone bollards and a parked bicycle reduce the available space along the edge.", "hazard_reasoning": "The main risk is the black van merging into the ego lane from the left under congested conditions. Because it is cutting in ahead, it could do so abruptly and create a collision risk, so this is the most critical hazard to monitor."}
{"id": "train_09324", "split": "train", "clip_key": "2020-0212-102546_073812_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "073812"}, "frames": ["2020-0212-102546_073812_movie_t-3.jpg", "2020-0212-102546_073812_movie_t-2.jpg", "2020-0212-102546_073812_movie_t-1.jpg", "2020-0212-102546_073812_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be cautious of traffic cone", "environment_perception": "This is an urban divided roadway with two lanes in the ego direction, bordered by apartment buildings and separated from opposing traffic by a low hedge median. The road surface looks clear and traffic is sparse. A large construction vehicle is moving slowly ahead in the ego lane, limiting forward progress. Farther ahead in the adjacent left lane, a maintenance truck and workers are positioned near the curb, and an orange traffic cone sits in that left lane, creating a narrowed area that could encourage movement toward the ego lane. On the opposite side of the median, a white oncoming car travels right to left with no direct effect on the ego vehicle.", "hazard_reasoning": "The key hazard is the orange traffic cone in the left lane. It indicates road work and may block part of the lane, requiring caution and possible lane adjustment, so this is a construction-related hazard."}
{"id": "train_09325", "split": "train", "clip_key": "titan_clip_673_000150_movie", "source": {"subset": "titan", "scenario": "clip_673", "frame": "000150"}, "frames": ["titan_clip_673_000150_movie_t-3.jpg", "titan_clip_673_000150_movie_t-2.jpg", "titan_clip_673_000150_movie_t-1.jpg", "titan_clip_673_000150_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "The scene is a narrow two-way residential street with no centerline, leading toward a railway crossing. The road surface looks worn and the markings are faded, with little traffic present. A cyclist ahead is traveling slowly in the center of the lane toward the tracks, limiting the vehicle’s progress. On the left side near the fence and crossing hardware, a person is standing at the edge of the road. Crossbucks and warning lights are visible, and the left-side crossing barrier is lifting as the crossing opens. A tarp-covered parked car sits on the right near a building, reducing roadside space but not blocking the lane.", "hazard_reasoning": "The key issue is the left-side level crossing barrier rising. This shows the crossing is active and still in transition, so it could close again or indicate train-related movement. The driver should wait to proceed until the barrier is fully raised and the crossing is clearly safe."}
{"id": "train_09326", "split": "train", "clip_key": "titan_clip_493_000360_movie", "source": {"subset": "titan", "scenario": "clip_493", "frame": "000360"}, "frames": ["titan_clip_493_000360_movie_t-3.jpg", "titan_clip_493_000360_movie_t-2.jpg", "titan_clip_493_000360_movie_t-1.jpg", "titan_clip_493_000360_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "be aware of traffic barriers on left side", "environment_perception": "The scene shows a straight residential street with a single narrow lane and no painted centerline. The road surface is clear, and traffic is light. On the left side, low metal barriers run alongside the lane next to a raised sidewalk. A pedestrian on the left sidewalk continues forward without entering the roadway. Near the marked crosswalk ahead, another pedestrian is crossing from right to left through the lane, while a person on the right sidewalk remains at the curb as if waiting to cross.", "hazard_reasoning": "The main concern is the line of traffic barriers on the left edge of the road. They reduce the usable width of the lane and limit room for the vehicle to maneuver, so the driver should watch for the barriers on the left side."}
{"id": "train_09327", "split": "train", "clip_key": "titan_clip_1298_000438_movie", "source": {"subset": "titan", "scenario": "clip_1298", "frame": "000438"}, "frames": ["titan_clip_1298_000438_movie_t-3.jpg", "titan_clip_1298_000438_movie_t-2.jpg", "titan_clip_1298_000438_movie_t-1.jpg", "titan_clip_1298_000438_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around construction work.", "environment_perception": "This is a narrow urban road with shops and trees along the sides, a single unmarked lane, no median, and dry pavement. Traffic appears light, with no vehicles moving ahead or approaching. On the left, roadworks are set up with a crane truck and other work vehicles stopped behind orange cones, narrowing the available lane. A blue truck is also parked partly in the roadway near the ego vehicle, further reducing clearance and pushing the usable path to the right. On the right sidewalk, a pedestrian near a store entrance is walking along the storefronts and stays on the sidewalk. Cut branches and cones line the left curb, and there are no visible traffic lights or speed signs.", "hazard_reasoning": "The main issue is the construction activity on the left side of the road. Because the cones, work vehicles, and parked truck encroach on the lane, the driver has less space and visibility and needs to pass through carefully to avoid hitting obstacles and to keep pedestrians safe."}
{"id": "train_09328", "split": "train", "clip_key": "2020-0205-152530_060471_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "060471"}, "frames": ["2020-0205-152530_060471_movie_t-3.jpg", "2020-0205-152530_060471_movie_t-2.jpg", "2020-0205-152530_060471_movie_t-1.jpg", "2020-0205-152530_060471_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of truck lane change", "environment_perception": "An urban multilane roadway lies beneath an elevated expressway, with two same-direction lanes and a separate right lane divided by flexible posts. The road surface looks clear, traffic is sparse, and flow is steady. A gray truck ahead near the ego lane is edging rightward toward the separated right lane, while a white van slightly ahead in that lane continues straight. On the left, several small trucks are parked inside a warehouse driveway, including one facing outward but still held behind the railing and not entering traffic. Blue guide signs appear ahead, and there are no active signals.", "hazard_reasoning": "The gray truck is moving from the ego lane toward the right lane, creating a lane-change/merge situation. Since it is shifting into the driving path area, it should be monitored closely and the driver should be ready to slow down if needed."}
{"id": "train_09329", "split": "train", "clip_key": "titan_clip_493_000360_movie", "source": {"subset": "titan", "scenario": "clip_493", "frame": "000360"}, "frames": ["titan_clip_493_000360_movie_t-3.jpg", "titan_clip_493_000360_movie_t-2.jpg", "titan_clip_493_000360_movie_t-1.jpg", "titan_clip_493_000360_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "be aware of traffic barriers on left side", "environment_perception": "The scene shows a straight urban residential road with a single narrow lane and no centerline, with smooth pavement and little traffic. Low metal barriers run along the left edge beside a raised sidewalk. A pedestrian on the left sidewalk is walking forward and stays out of the lane. Near the marked crosswalk ahead, another pedestrian is crossing from right to left across the roadway, while a third person waits on the right sidewalk at the curb.", "hazard_reasoning": "The main concern is the line of traffic barriers on the left side of the road. They reduce the usable width of the lane and leave less room for passing or correction, so the driver should watch for the barriers on the left."}
{"id": "train_09330", "split": "train", "clip_key": "2020-0212-102546_073812_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "073812"}, "frames": ["2020-0212-102546_073812_movie_t-3.jpg", "2020-0212-102546_073812_movie_t-2.jpg", "2020-0212-102546_073812_movie_t-1.jpg", "2020-0212-102546_073812_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be cautious of traffic cone", "environment_perception": "The scene shows an urban divided roadway with two lanes in the ego direction, bordered by apartment buildings and separated from opposing traffic by a low hedge median. Road conditions look clear and traffic is sparse. A large construction vehicle is moving slowly ahead in the ego lane, reducing the available pace. Farther ahead in the left adjacent lane, a maintenance truck and some workers are positioned near the curb, and an orange traffic cone is placed in that lane, making it narrower and possibly encouraging vehicles to shift toward the ego lane. On the opposite side of the median, a white oncoming car moves right to left without affecting the ego vehicle.", "hazard_reasoning": "The most relevant hazard is the orange traffic cone in the left lane. It indicates roadwork and may obstruct normal lane use, so the driver should be alert and prepared for lane adjustment."}
{"id": "train_09331", "split": "train", "clip_key": "2020-0207-101955_111070_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "111070"}, "frames": ["2020-0207-101955_111070_movie_t-3.jpg", "2020-0207-101955_111070_movie_t-2.jpg", "2020-0207-101955_111070_movie_t-1.jpg", "2020-0207-101955_111070_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A multi-lane urban road passes beneath an overpass and pedestrian bridge, with dry pavement and dense stop-and-go traffic moving in the same direction. In the ego lane, a blue sedan ahead is slowing while a large box truck from the left starts moving into that lane just ahead of it, narrowing the path forward. The white box truck ahead-left also drifts right across the lane boundary to merge, further shrinking the open gap. On the right, a small flatbed truck inches forward beside queued cars, so there is limited room on that side as well.", "hazard_reasoning": "The key hazard is the truck merging into the ego lane, which is causing the blue sedan directly ahead to decelerate. Because the lead vehicle is slowing in response to the lane change, the ego vehicle needs to reduce speed soon to avoid closing in too quickly and creating a collision risk."}
{"id": "train_09332", "split": "train", "clip_key": "2020-0210-155354_035027_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "035027"}, "frames": ["2020-0210-155354_035027_movie_t-3.jpg", "2020-0210-155354_035027_movie_t-2.jpg", "2020-0210-155354_035027_movie_t-1.jpg", "2020-0210-155354_035027_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "This is a multi-lane urban road with three same-direction lanes, a barrier along the sidewalk, and heavy traffic lined up at a red light near an intersection. In the ego lane, a purple sedan is stationary and turned slightly left, straddling the lane line as it begins to merge toward the left lane. A white van is stopped just ahead in that left lane, leaving little room for the sedan to move over. A black sedan is also queued and stopped in the right lane, and overhead Japanese direction signs hang above the roadway.", "hazard_reasoning": "The main risk is the purple sedan, which is stopped while merging from the ego lane into the left lane. Because traffic is halted at the red light and the gap beside the sedan is tight, this merging vehicle is the most relevant hazard. The driver should prepare to stop and avoid contact."}
{"id": "train_09333", "split": "train", "clip_key": "2020-0228-150133_011447_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-150133_011447_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-150133_011447_movie_t-3_augB1.jpg", "2020-0228-150133_011447_movie_t-2_augB1.jpg", "2020-0228-150133_011447_movie_t-1_augB1.jpg", "2020-0228-150133_011447_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of truck merging left", "environment_perception": "The scene shows an urban two-way roadway lined with mid-rise buildings and shops, with a solid yellow centerline and dry pavement as the ego vehicle nears a signalized intersection. A white box truck directly ahead in the ego lane is moving into the left lane, momentarily affecting the ego car’s path and speed. In the opposite lane, a white oncoming truck travels straight on the right side of the centerline without drifting over. A smaller truck is also visible farther ahead near the curb, moving along its own side. Pedestrians are present on both sidewalks, including one on the right with a dog, but none enter the road. Traffic lights are visible overhead.", "hazard_reasoning": "The main concern is the white truck ahead shifting left from the ego lane. Its lane change may overlap the ego vehicle’s intended path and force an abrupt response, so this is the critical hazard to monitor."}
{"id": "train_09334", "split": "train", "clip_key": "2020-0206-142535_005891_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "005891"}, "frames": ["2020-0206-142535_005891_movie_t-3.jpg", "2020-0206-142535_005891_movie_t-2.jpg", "2020-0206-142535_005891_movie_t-1.jpg", "2020-0206-142535_005891_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of bus cutting in", "environment_perception": "The scene shows a two-way urban road with one narrow lane in each direction, smooth pavement, and steady light traffic, with no median visible. A small white box truck is moving ahead in the ego lane at low speed, reducing the available pace. In the oncoming lane, a pink bus shifts toward the center while going around a black van parked at the curb, and this causes it to edge into the ego lane. The black van remains stationary along the curb near the ego path, and temporary barriers with cones run along the left side, making the roadway slightly tighter.", "hazard_reasoning": "The pink bus is drifting into the ego lane as it passes the parked van, creating an unexpected merge into your path. Because this movement can intrude on the ego vehicle's lane, it presents a high-risk hazard that calls for caution."}
{"id": "train_09335", "split": "train", "clip_key": "2020-0213-143552_009549_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009549"}, "frames": ["2020-0213-143552_009549_movie_t-3.jpg", "2020-0213-143552_009549_movie_t-2.jpg", "2020-0213-143552_009549_movie_t-1.jpg", "2020-0213-143552_009549_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around roadwork area", "environment_perception": "This is an urban two-way road with one lane in each direction, lined by mid-rise buildings. The ego vehicle is moving in the left lane on clear pavement, with light traffic and visible roadworks ahead. A dark hatchback in front of the ego vehicle is continuing slowly through the narrowed space near the cones. Farther ahead to the right, a scooter is edging left around the work area and could drift toward the ego lane while passing the cones. On the opposite side, a work truck is stopped beside the construction site, with barriers and personnel guiding traffic. Cones and a temporary sign are placed along the center line, and a cone on the right side of the lane marks the construction encroachment, creating a brief chicane.", "hazard_reasoning": "The main hazard is the road construction on the right side of the lane. Because cones and barriers squeeze the usable driving space, the ego vehicle needs to proceed cautiously through the work zone to avoid contact or collision."}
{"id": "train_09336", "split": "train", "clip_key": "2020-0204-150838_061834_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "061834"}, "frames": ["2020-0204-150838_061834_movie_t-3.jpg", "2020-0204-150838_061834_movie_t-2.jpg", "2020-0204-150838_061834_movie_t-1.jpg", "2020-0204-150838_061834_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene shows a busy urban multi-lane road beneath an elevated expressway, with smooth pavement and slow-moving traffic. A white box truck is directly ahead in the ego lane, moving forward only slightly and limiting the ego vehicle’s progress. On the left, a gray van pulls out from the curb and moves into the ego lane ahead of the ego car. A large dump truck travels close by in the right neighboring lane at nearly the same slow speed. Blue overhead signs mention Chiba, Tatsumi, and Route 357.", "hazard_reasoning": "The main risk is the gray van merging into the ego lane in front of the vehicle where there was available space. This creates a lane-change merge hazard with a meaningful chance of conflict, so the driver should reduce speed and keep a safe gap."}
{"id": "train_09337", "split": "train", "clip_key": "2020-0213-143552_009549_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009549"}, "frames": ["2020-0213-143552_009549_movie_t-3.jpg", "2020-0213-143552_009549_movie_t-2.jpg", "2020-0213-143552_009549_movie_t-1.jpg", "2020-0213-143552_009549_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around roadwork area", "environment_perception": "A two-way urban street with one lane in each direction runs past mid-rise buildings, and the ego vehicle is moving in the left lane on clear pavement with light, slow traffic near roadworks. A dark hatchback ahead in the ego lane is continuing cautiously through the narrowed section, while a scooter farther ahead on the right shifts left around the work area and could edge toward the ego lane near the cones. In the opposite lane, a work truck is positioned by the construction site with barriers and personnel, and cones with a temporary sign mark the center line. A cone on the right side of the lane indicates road construction encroaching into the roadway and forming a short chicane.", "hazard_reasoning": "The main hazard is the road construction narrowing the lane on the right side. Because the cones and barriers restrict space, the driver needs to pass the work zone carefully to reduce the chance of a collision."}
{"id": "train_09338", "split": "train", "clip_key": "2020-0218-103119_057404_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "057404"}, "frames": ["2020-0218-103119_057404_movie_t-3.jpg", "2020-0218-103119_057404_movie_t-2.jpg", "2020-0218-103119_057404_movie_t-1.jpg", "2020-0218-103119_057404_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to allow safe lane change.", "environment_perception": "The scene shows an urban two-lane roadway beneath an elevated structure, with clear pavement and light traffic. A white box truck ahead in the left ego lane is moving into the right lane in front of the car, briefly reducing the ego vehicle’s forward space. A small white bus is traveling straight in the right lane slightly ahead, leaving little room for the truck’s merge. On the left sidewalk, a cyclist approaches behind a low barrier and stays fully separated from the road.", "hazard_reasoning": "The main concern is the white truck shifting from the ego lane into the right lane directly ahead of the ego vehicle. Because this lane change may cross into the car’s path, it creates a merge conflict and potential delay. The safer response is to slow down and keep distance until the truck finishes moving over."}
{"id": "train_09339", "split": "train", "clip_key": "2020-0206-142535_005949_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "005949"}, "frames": ["2020-0206-142535_005949_movie_t-3.jpg", "2020-0206-142535_005949_movie_t-2.jpg", "2020-0206-142535_005949_movie_t-1.jpg", "2020-0206-142535_005949_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "HIGH", "warning_content": "Yield to oncoming bus", "environment_perception": "The scene shows a narrow two-way urban street without a median, with the ego vehicle traveling along the left lane between buildings. Up ahead on the right, a pink bus is coming from the opposite direction, but it crosses the center line and partly occupies the ego lane while going around a black van stopped at the curb. This bus is moving toward the ego car and temporarily narrows the available path. A small white flatbed truck is also directly ahead in the ego lane, moving forward slowly and leaving little extra space for the bus to return. The black van stays parked along the far right side of the opposite lane, which explains the bus's deviation. Cones and temporary barriers along the left curb further restrict the roadway.", "hazard_reasoning": "The main hazard is the pink bus encroaching into the ego lane while approaching head-on from the opposite direction. Because it is passing a parked vehicle, it is driving over the lane marking and creating a potential collision risk. The ego driver should slow and yield so the bus can clear safely."}
{"id": "train_09340", "split": "train", "clip_key": "2020-0203-114632_066332_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "066332"}, "frames": ["2020-0203-114632_066332_movie_t-3.jpg", "2020-0203-114632_066332_movie_t-2.jpg", "2020-0203-114632_066332_movie_t-1.jpg", "2020-0203-114632_066332_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of lane change", "environment_perception": "The scene shows a built-up urban bridge with clear lane markings and a painted median, with traffic moving steadily at light to moderate density. A white truck just ahead in the ego lane signals and shifts into the right lane in front of the ego vehicle, momentarily narrowing the available space before continuing on. Farther ahead, a dark sedan keeps a steady course in the right lane and becomes the vehicle the truck ends up following. Across the median, multiple oncoming vehicles, including a white truck, travel in their own lanes without affecting the ego car. A yellow merge warning sign appears on the left, and tall apartment buildings line the road.", "hazard_reasoning": "The main hazard is the white truck merging from the ego lane into the right lane directly ahead of the ego vehicle. This lane change could intrude into the ego vehicle's path or lane space, so it warrants immediate attention."}
{"id": "train_09341", "split": "train", "clip_key": "2020-0203-114632_005252_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005252"}, "frames": ["2020-0203-114632_005252_movie_t-3.jpg", "2020-0203-114632_005252_movie_t-2.jpg", "2020-0203-114632_005252_movie_t-1.jpg", "2020-0203-114632_005252_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cones.", "environment_perception": "This is an urban two-way street with one lane in each direction and a yellow center divider, bordered by mid-rise buildings. The road surface looks smooth, and traffic is light but temporarily restricted by roadworks. Orange cones shut down the left lane for construction, with a white work truck parked ahead inside the coned-off area. A road worker is standing near the middle of the roadway, using a baton to guide vehicles through the narrowed passage, while an oncoming city bus slows near the curb as it reaches the constricted section.", "hazard_reasoning": "The main hazard is the row of orange cones closing off the left lane for construction. This creates a physical blockage and narrows the drivable space, so the driver must pass carefully to avoid the obstruction."}
{"id": "train_09342", "split": "train", "clip_key": "2020-0206-142535_005949_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "005949"}, "frames": ["2020-0206-142535_005949_movie_t-3.jpg", "2020-0206-142535_005949_movie_t-2.jpg", "2020-0206-142535_005949_movie_t-1.jpg", "2020-0206-142535_005949_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "HIGH", "warning_content": "Yield to oncoming bus", "environment_perception": "The ego vehicle is traveling through a tight two-way city street with no median, smooth road surface, and limited space between buildings. A pink bus ahead on the right is coming from the opposite direction, but it crosses the center line and partly occupies the ego lane while going around a black van stopped along the curb. A small white flatbed truck is also ahead in the ego lane, moving forward slowly and leaving less room for the bus to return. The black van is stationary at the far right side of the opposing lane, which is what forces the bus to deviate. Cones and temporary barriers along the left curb further constrict the roadway.", "hazard_reasoning": "The main hazard is the pink bus entering the ego lane from the oncoming side while traveling toward the ego car. Because it is passing a stopped vehicle and is still partially over the lane divider, it creates an immediate collision risk. The driver should slow and yield so the bus can clear safely."}
{"id": "train_09343", "split": "train", "clip_key": "2020-0203-114632_005252_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005252"}, "frames": ["2020-0203-114632_005252_movie_t-3.jpg", "2020-0203-114632_005252_movie_t-2.jpg", "2020-0203-114632_005252_movie_t-1.jpg", "2020-0203-114632_005252_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cones.", "environment_perception": "This is an urban two-way roadway with a single lane in each direction and a yellow center divider, lined by mid-rise buildings. The scene is mostly clear, but roadworks are narrowing the route. Orange cones close off the left lane, a white work truck is parked farther ahead within the coned-off section, and a road worker near the middle of the road is signaling with a baton to guide traffic through the restriction. An oncoming city bus is also visible in the opposite lane, easing down as it nears the narrowed area.", "hazard_reasoning": "The main hazard is the construction setup marked by the orange cones blocking the left lane. Because the lane is partially closed and traffic must pass through a tighter space, the driver needs to proceed cautiously and navigate around the cones."}
{"id": "train_09344", "split": "train", "clip_key": "2020-0129-144857_026910_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "026910"}, "frames": ["2020-0129-144857_026910_movie_t-3.jpg", "2020-0129-144857_026910_movie_t-2.jpg", "2020-0129-144857_026910_movie_t-1.jpg", "2020-0129-144857_026910_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging van", "environment_perception": "This is an urban three-lane road under an elevated structure, with a curb and fence along the right side. The pavement is dry and clear, and traffic is light. A black van moves from the left lane into the ego lane and keeps going straight, briefly shrinking the gap ahead. A dark car farther in front stays in the ego lane and continues at a steady pace, while a white box truck in the left lane remains slightly ahead and does not enter the ego path. Overhead signs show the center lanes go straight and the right lane is for right turns only.", "hazard_reasoning": "The main concern is the black van merging from the left into the ego lane. Its lane change could cut into the vehicle's path and reduce safe following distance, so it should be watched closely and the driver should be ready to respond."}
{"id": "train_09345", "split": "train", "clip_key": "2020-0226-101332_035616_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "035616"}, "frames": ["2020-0226-101332_035616_movie_t-3.jpg", "2020-0226-101332_035616_movie_t-2.jpg", "2020-0226-101332_035616_movie_t-1.jpg", "2020-0226-101332_035616_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "The scene shows a busy urban roadway beneath an elevated expressway, with a guardrail dividing a parallel right-side lane. The road surface is dry, and traffic is moving very slowly. In the ego lane, a black sedan ahead is reducing speed as a red sedan from the left lane shifts into its path. Farther ahead, a white van remains stopped in the queue, and a large green truck in the far-left lane is also inching forward.", "hazard_reasoning": "The main risk comes from the red sedan merging into the ego lane ahead of the black sedan, which causes the black sedan to brake suddenly. This abrupt slowdown raises the chance of a rear-end crash if the following driver does not react immediately."}
{"id": "train_09346", "split": "train", "clip_key": "2020-0226-101332_012098_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "012098"}, "frames": ["2020-0226-101332_012098_movie_t-3.jpg", "2020-0226-101332_012098_movie_t-2.jpg", "2020-0226-101332_012098_movie_t-1.jpg", "2020-0226-101332_012098_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the merging van.", "environment_perception": "This is an urban two-way road with a single narrow lane in each direction, lined by mid-rise buildings and patched pavement, with light traffic. A small red van ahead is already in the ego lane after cutting in, and it is continuing forward at a moderate pace, narrowing the available path for the ego vehicle. A white truck is coming toward the camera in the opposite lane and remains in its own lane. Pedestrians are visible on both sidewalks near the curb, but they stay off the roadway. An overhead pedestrian bridge crosses above, and cones with railings run along the curbs.", "hazard_reasoning": "The main hazard is the red van merging into the ego lane ahead of the vehicle. Its recent lane change places it directly in the travel path, creating a need to slow down or adjust steering to prevent a collision."}
{"id": "train_09347", "split": "train", "clip_key": "2020-0129-144857_050281_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "050281"}, "frames": ["2020-0129-144857_050281_movie_t-3.jpg", "2020-0129-144857_050281_movie_t-2.jpg", "2020-0129-144857_050281_movie_t-1.jpg", "2020-0129-144857_050281_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of truck changing lanes.", "environment_perception": "The scene shows an urban roadway where a left-side service lane feeds into the main road on the right, marked by flexible bollards and a painted gore area. The service lane surface looks rough and patched, and traffic is light. In front, a white box truck is moving from the ego lane toward the right lane, progressing steadily into the adjacent through lane. A pedestrian is visible on the left sidewalk behind a fence and stays well away from the roadway. The merge area and posts reduce available space, but no other notable hazards appear.", "hazard_reasoning": "The main risk is the white truck shifting from the ego lane into the right lane. Because it is changing lanes near the vehicle’s path, the driver should watch it closely and keep a safe gap to avoid a collision."}
{"id": "train_09348", "split": "train", "clip_key": "titan_clip_1386_000270_movie", "source": {"subset": "titan", "scenario": "clip_1386", "frame": "000270"}, "frames": ["titan_clip_1386_000270_movie_t-3.jpg", "titan_clip_1386_000270_movie_t-2.jpg", "titan_clip_1386_000270_movie_t-1.jpg", "titan_clip_1386_000270_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is a tight urban side street with patched pavement and no lane separation, carrying light traffic. The ego vehicle is moving along the left side between buildings. A black minivan ahead in the same direction is slowly rolling and then momentarily stopping, which limits progress. On the right edge, a pedestrian walks near fencing beside a line of green cones, staying close to the curb with little room from the roadway. The right side also appears to be an active work area with exposed ground next to the pavement, and no signals or speed signs are visible.", "hazard_reasoning": "The green cones and disturbed roadside on the right indicate road construction. Since the work area sits close to the travel path and a person is nearby, the main risk is encroaching on the cones or workers, so the vehicle should proceed carefully and slow down."}
{"id": "train_09349", "split": "train", "clip_key": "2020-0206-142535_005949_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "005949"}, "frames": ["2020-0206-142535_005949_movie_t-3.jpg", "2020-0206-142535_005949_movie_t-2.jpg", "2020-0206-142535_005949_movie_t-1.jpg", "2020-0206-142535_005949_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "HIGH", "warning_content": "Yield to oncoming bus", "environment_perception": "The scene shows a tight two-way urban street without a median, with smooth roadway and light traffic as the ego car travels in the left lane between buildings. In the distance on the right, a pink bus is coming from the opposite direction but has crossed the center line and moved partly into the ego lane to get around a black van parked at the curb, creating a brief obstruction ahead. A small white flatbed truck is also directly in front of the ego vehicle in the same lane, moving straight ahead at low speed and limiting space for the bus to return. The black van stays stopped at the far right edge of the opposite side, which explains the bus's detour. Cones and temporary barriers along the left curb further restrict the available roadway.", "hazard_reasoning": "The main hazard is the pink bus entering the ego lane from the oncoming direction while passing the parked van. Because it is over the lane line and moving toward the ego vehicle, it presents an immediate collision risk. The safest response is to yield and let the bus clear the lane."}
{"id": "train_09350", "split": "train", "clip_key": "2020-0206-142535_005949_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-142535_005949_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-142535_005949_movie_t-3_augB1.jpg", "2020-0206-142535_005949_movie_t-2_augB1.jpg", "2020-0206-142535_005949_movie_t-1_augB1.jpg", "2020-0206-142535_005949_movie_t_augB1.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "HIGH", "warning_content": "Yield to oncoming bus", "environment_perception": "The ego vehicle is traveling through a narrow two-way urban street with no median and close buildings on both sides. A pink coach is coming from ahead in the opposite direction, but it crosses the center line and partly enters the ego lane to get around a black van parked along the curb, briefly narrowing the available path. A small white flatbed truck is also ahead in the ego lane, moving straight at low speed and limiting space for the bus to return. The black van stays parked on the far right side, while cones and temporary barriers along the left curb further reduce roadway width.", "hazard_reasoning": "The main hazard is the pink bus edging over the lane line into the oncoming side and toward the ego car while passing a parked vehicle. Because it is occupying part of the ego lane and approaching head-on, there is a significant collision risk, so the driver should slow and yield for it to clear safely."}
{"id": "train_09351", "split": "train", "clip_key": "2020-0207-151349_014406_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_014406_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_014406_movie_t-3_augB1.jpg", "2020-0207-151349_014406_movie_t-2_augB1.jpg", "2020-0207-151349_014406_movie_t-1_augB1.jpg", "2020-0207-151349_014406_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop behind the white van", "environment_perception": "This is a sun-glared urban multi-lane roadway near an intersection, with smooth pavement and a hedge along the right curb. Traffic ahead is dense and stopped in a queue. Directly in the ego lane, a white van is stopped and angled left as if preparing to turn and merge into the adjacent line of traffic. A box truck is stationary slightly ahead on the right, limiting space and visibility, while another box truck is stopped close on the left, making the lane feel constricted.", "hazard_reasoning": "The main risk is the white van ahead, since it is positioned to turn left and merge into the stopped traffic. The ego vehicle should remain behind it and keep a safe gap to avoid a collision if it moves into the lane."}
{"id": "train_09352", "split": "train", "clip_key": "titan_clip_1386_000270_movie", "source": {"subset": "titan", "scenario": "clip_1386", "frame": "000270"}, "frames": ["titan_clip_1386_000270_movie_t-3.jpg", "titan_clip_1386_000270_movie_t-2.jpg", "titan_clip_1386_000270_movie_t-1.jpg", "titan_clip_1386_000270_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene is a tight urban side street with a narrow two-way carriageway and worn asphalt, with light traffic moving through. The ego vehicle travels along the left side between buildings close to the road. Ahead, a black minivan in the same direction moves slowly and then briefly stops, limiting progress. Along the right edge, a man walks near fencing, and green traffic cones run beside the roadway with very little buffer from the lane. The right side remains a work area with exposed ground beside the pavement, creating a roadside obstruction. No traffic lights or speed limit signs are visible.", "hazard_reasoning": "The cones on the right indicate ongoing road construction. This means the driver should reduce speed and pass carefully to avoid the cones and any possible workers in the area."}
{"id": "train_09353", "split": "train", "clip_key": "titan_clip_676_000564_movie", "source": {"subset": "titan", "scenario": "clip_676", "frame": "000564"}, "frames": ["titan_clip_676_000564_movie_t-3.jpg", "titan_clip_676_000564_movie_t-2.jpg", "titan_clip_676_000564_movie_t-1.jpg", "titan_clip_676_000564_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is a city two-way road lined with tall buildings, with smooth pavement and light traffic. Construction cones tighten the approach to the intersection ahead. A large white box truck on the left, traveling in the same direction, is moving slowly along the curb and narrowing the available path. A woman is walking near the left roadside toward the intersection, staying close enough to the lane to be a possible conflict point. At the junction, a black truck is turning right across the ego vehicle into the side street and momentarily occupies the forward path. Another small truck comes through the intersection from the opposite direction in its own lane, while a no-entry sign is visible above the far street.", "hazard_reasoning": "The main hazard is the black truck turning into the right side street in front of the ego vehicle. Because it crosses the path at the intersection, the driver should slow down and leave enough space to avoid a collision with the merging truck."}
{"id": "train_09354", "split": "train", "clip_key": "2020-0127-132751_003631_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "003631"}, "frames": ["2020-0127-132751_003631_movie_t-3.jpg", "2020-0127-132751_003631_movie_t-2.jpg", "2020-0127-132751_003631_movie_t-1.jpg", "2020-0127-132751_003631_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows an urban road bending to the right between tall buildings, with a concrete wall on the right and a curb on the left. The pavement looks dry, and there is little traffic, with no vehicle immediately in front. Ahead on the left, several construction workers are present inside a coned-off section at the road edge, which tightens the available lane as the ego vehicle gets closer. A small work truck is stopped within the left-side closure, still and near the travel path. On the lower roadway to the right, a few vehicles move independently behind the wall. Temporary arrow boards and signs instruct traffic to shift to the right lane through the work area.", "hazard_reasoning": "The main hazard is road construction on the left side, with guidance directing traffic into the right lane. The safest response is to stay behind the vehicle ahead and merge smoothly right to avoid the work zone."}
{"id": "train_09355", "split": "train", "clip_key": "2020-0207-151349_014378_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-151349_014378_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-151349_014378_movie_t-3_augB1.jpg", "2020-0207-151349_014378_movie_t-2_augB1.jpg", "2020-0207-151349_014378_movie_t-1_augB1.jpg", "2020-0207-151349_014378_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows an urban multi-lane roadway with smooth pavement and dense stop-and-go traffic. Bright glare from the front makes visibility a bit worse. A white microvan directly ahead in the ego lane is shifting left into the adjacent left lane, which affects the space in front of the ego vehicle. A large box truck sits close in the right-front neighboring lane, while another freight truck on the far left is nearly stationary and parallel, making the roadway feel tight. A low hedge borders the right side.", "hazard_reasoning": "The main risk is the white van merging left from the lane ahead. Its lane change could cut across or block the ego vehicle's forward path, so the driver should prepare to stay behind it and follow its movement."}
{"id": "train_09356", "split": "train", "clip_key": "2020-0206-142535_005949_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-142535_005949_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-142535_005949_movie_t-3_augB1.jpg", "2020-0206-142535_005949_movie_t-2_augB1.jpg", "2020-0206-142535_005949_movie_t-1_augB1.jpg", "2020-0206-142535_005949_movie_t_augB1.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "HIGH", "warning_content": "Yield to oncoming bus", "environment_perception": "The ego vehicle is traveling along a narrow two-way urban street with no median and limited space between nearby buildings. A pink coach in the opposite direction moves toward the camera while crossing the center line into the ego lane to go around a black van parked at the curb. At the same time, a small white flatbed truck is ahead in the ego lane, moving straight at low speed and further limiting the available space. The black van stays stopped along the far right side of the opposing lane, and cones with temporary barriers along the left curb make the roadway even tighter.", "hazard_reasoning": "The main hazard is the pink bus encroaching into the ego lane from the oncoming side while passing a parked vehicle. Because it is directly approaching and occupying part of the ego path, there is a significant collision risk. The driver should give way and wait for the bus to clear safely."}
{"id": "train_09357", "split": "train", "clip_key": "2020-0207-101955_110918_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "110918"}, "frames": ["2020-0207-101955_110918_movie_t-3.jpg", "2020-0207-101955_110918_movie_t-2.jpg", "2020-0207-101955_110918_movie_t-1.jpg", "2020-0207-101955_110918_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A busy urban three-lane road beneath an elevated roadway shows same-direction traffic moving slowly on smooth asphalt. In the ego lane, a blue sedan ahead is reducing speed as a silver minivan from the right lane moves left and merges into that lane. A large box truck in the left lane is creeping forward beside the sedan, tightening the space ahead. A flatbed truck on the right is also traveling slowly next to the ego vehicle, leaving little room to maneuver. Overhead Japanese directional signs are visible, and no clear traffic signal is in view.", "hazard_reasoning": "The main risk is the silver minivan merging into the ego lane and forcing the blue sedan ahead to slow. This creates a lane-change merge hazard directly in front of the ego vehicle, so the driver should reduce speed and keep a safe following gap to avoid contact."}
{"id": "train_09358", "split": "train", "clip_key": "2020-0206-142535_005949_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-142535_005949_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-142535_005949_movie_t-3_augB1.jpg", "2020-0206-142535_005949_movie_t-2_augB1.jpg", "2020-0206-142535_005949_movie_t-1_augB1.jpg", "2020-0206-142535_005949_movie_t_augB1.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "HIGH", "warning_content": "Yield to oncoming bus", "environment_perception": "The ego vehicle is traveling along a narrow two-way urban road with no median, smooth pavement, and limited space between nearby buildings. A pink coach in the opposing direction is partly over the center line and edging into the ego lane as it goes around a black van parked at the curb, coming toward the ego car and reducing available clearance. A small white flatbed truck is also ahead in the ego lane, moving forward slowly and leaving less room for the coach to return. The black van stays parked at the right edge, while cones and temporary barriers along the left side further restrict the roadway.", "hazard_reasoning": "The key hazard is the pink bus entering the oncoming side and crossing into the ego lane while approaching the vehicle. Since it is deviating around a parked obstacle, it creates an immediate collision risk and the driver should give it space to pass safely."}
{"id": "train_09359", "split": "train", "clip_key": "2020-0203-114632_066332_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_066332_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_066332_movie_t-3_augB1.jpg", "2020-0203-114632_066332_movie_t-2_augB1.jpg", "2020-0203-114632_066332_movie_t-1_augB1.jpg", "2020-0203-114632_066332_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of lane change", "environment_perception": "The scene shows an urban bridge with clear lane markings and a painted median, with traffic flowing steadily at a light to moderate level. A white truck ahead in the ego lane activates a signal and shifts into the right lane directly in front of the ego vehicle, briefly limiting the path before moving clear. Farther ahead, a dark sedan proceeds straight in the right lane at a constant speed and becomes the vehicle the truck follows. Across the median, multiple oncoming vehicles, including a white truck, travel in their own lanes without affecting the ego car. A yellow merge warning sign appears on the left, and tall apartment buildings run alongside the road.", "hazard_reasoning": "The main hazard is the white truck changing lanes ahead of the ego vehicle, moving from the ego lane into the right lane. This creates a potential encroachment into the ego car's lane space, so the driver should be prepared for the truck's merge behavior."}
{"id": "train_09360", "split": "train", "clip_key": "2020-0127-132751_003631_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "003631"}, "frames": ["2020-0127-132751_003631_movie_t-3.jpg", "2020-0127-132751_003631_movie_t-2.jpg", "2020-0127-132751_003631_movie_t-1.jpg", "2020-0127-132751_003631_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows an urban roadway curving to the right between tall buildings, with a concrete wall along the right and a curb on the left. The pavement looks dry and clear, and there is no vehicle immediately in front. Ahead on the left, several construction workers are standing and moving inside a coned-off section right beside the lane, which makes the travel area narrower. A small work truck is parked within the closure on the left, stationary but close to the lane. On the lower parallel road to the right, a few vehicles travel separately behind the wall. Temporary signs and arrow boards indicate that traffic should shift into the right lane through the work area.", "hazard_reasoning": "The main issue is the road construction on the left, with guidance directing vehicles to move right. The safest response is to follow the vehicle ahead and merge smoothly into the right lane to stay clear of the construction zone."}
{"id": "train_09361", "split": "train", "clip_key": "2020-0221-115122_031251_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0221-115122_031251_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0221-115122_031251_movie_t-3_augB1.jpg", "2020-0221-115122_031251_movie_t-2_augB1.jpg", "2020-0221-115122_031251_movie_t-1_augB1.jpg", "2020-0221-115122_031251_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be cautious of merging vehicle ahead.", "environment_perception": "The scene shows a busy multi-lane urban road beneath an elevated structure, with a guardrail along the right edge and dry, clear pavement. Traffic in the same direction is dense and moving slowly. A black sedan directly ahead shifts from the left lane into the ego lane and ends up in front of the vehicle, limiting forward space. A white compact car remains farther ahead in the ego lane at low speed. Other cars in the left-adjacent lanes are moving forward beside the ego vehicle, but they are not merging, and no special signals or other obstacles are visible.", "hazard_reasoning": "The key hazard is the black sedan cutting into the ego lane from the left and settling ahead of the car. This merging action narrows the available gap and could require abrupt slowing or minor steering adjustment, so the situation calls for caution around the vehicle merging ahead."}
{"id": "train_09362", "split": "train", "clip_key": "titan_clip_1388_000474_movie", "source": {"subset": "titan", "scenario": "clip_1388", "frame": "000474"}, "frames": ["titan_clip_1388_000474_movie_t-3.jpg", "titan_clip_1388_000474_movie_t-2.jpg", "titan_clip_1388_000474_movie_t-1.jpg", "titan_clip_1388_000474_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cones", "environment_perception": "A worn urban two-way street without a median runs toward a T-junction beneath an elevated roadway, and the lane becomes tighter where construction fences line the sides. Light traffic is present with no oncoming vehicles in view. Red and blue cones are placed along the left side of the ego lane, narrowing the available space because of work on the left. A reflective-vested worker emerges from the right and crosses the ego lane near the stop line, momentarily blocking the path. At the junction, a white van travels rightward along the cross street before the ego vehicle can enter. A cyclist on the left verge moves slowly forward beside the cones and may join the lane. A Japanese stop sign and a large stop marking show the vehicle must stop at the intersection.", "hazard_reasoning": "The main hazard is the construction setup, with cones extending into the ego lane and reducing clearance on the left. Because the drivable space is partially obstructed, the driver needs to proceed cautiously and steer around the cones to keep a safe path through the area."}
{"id": "train_09363", "split": "train", "clip_key": "2020-0203-114632_028751_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "028751"}, "frames": ["2020-0203-114632_028751_movie_t-3.jpg", "2020-0203-114632_028751_movie_t-2.jpg", "2020-0203-114632_028751_movie_t-1.jpg", "2020-0203-114632_028751_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of merging van ahead", "environment_perception": "The scene shows a busy urban multi-lane road with smooth pavement. The ego vehicle is moving in the left curbside bus-only lane, separated from the adjacent lane by a line of flexible posts. A black van ahead is moving left out of the ego lane into the lane beside it, reducing the available space in front of the ego car. In that left lane, a gray crossover continues forward just ahead and alongside, while a white sedan farther on keeps traveling steadily and becomes the next lead vehicle. Vehicles in the lanes to the right are oncoming and do not influence the ego path.", "hazard_reasoning": "The key hazard is the black van merging left from the ego lane into the adjacent lane directly ahead of the ego vehicle. This lane-change merge could cut in front of the ego car and force sudden braking."}
{"id": "train_09364", "split": "train", "clip_key": "titan_clip_312_000438_movie", "source": {"subset": "titan", "scenario": "clip_312", "frame": "000438"}, "frames": ["titan_clip_312_000438_movie_t-3.jpg", "titan_clip_312_000438_movie_t-2.jpg", "titan_clip_312_000438_movie_t-1.jpg", "titan_clip_312_000438_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre", "environment_perception": "A narrow urban two-way street without a centerline is lined by midrise buildings, with smooth pavement and sparse traffic. Ahead, a silver sedan is coming toward the camera in the ego lane. A white truck is stopped along the left curb, likely loading, which reduces the available roadway. On the right side, two pedestrians are walking close to the street, with one near the lane beside traffic cones. A black van is parked on the left with its rear door open, and a worker with equipment stands nearby, creating a small work area at the roadside.", "hazard_reasoning": "The main concern is the silver sedan approaching directly in the ego lane. Because it is oncoming in a narrow street, it could shift unexpectedly into the ego vehicle’s path, so the driver needs to maneuver cautiously to prevent a collision."}
{"id": "train_09365", "split": "train", "clip_key": "2020-0210-155354_019650_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "019650"}, "frames": ["2020-0210-155354_019650_movie_t-3.jpg", "2020-0210-155354_019650_movie_t-2.jpg", "2020-0210-155354_019650_movie_t-1.jpg", "2020-0210-155354_019650_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "This is a dry urban two-way road with one lane in each direction and a solid yellow center line. A white van ahead in the ego lane is moving slowly and edging left to go around a large delivery truck stopped at the right curb, which narrows the space for the ego vehicle behind it. In the opposite lane, a small white minivan is coming toward us, so the van cannot move very far left. A kei truck is parked on the right, and pedestrians on the sidewalk remain off the roadway.", "hazard_reasoning": "The main risk is the white van ahead merging or shifting left in front of the ego car while passing the parked truck. Because it is constrained by oncoming traffic, the maneuver leaves little room and requires the driver to keep back and prepare to slow down."}
{"id": "train_09366", "split": "train", "clip_key": "2020-0131-135401_021556_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "021556"}, "frames": ["2020-0131-135401_021556_movie_t-3.jpg", "2020-0131-135401_021556_movie_t-2.jpg", "2020-0131-135401_021556_movie_t-1.jpg", "2020-0131-135401_021556_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the merging truck.", "environment_perception": "An urban multilane roadway includes a narrow slip lane curving left beside a white guardrail and curb, with smooth pavement and light traffic. The same-direction lanes continue on the right side beyond the guardrail. A silver box truck ahead moves in from the left lane into the ego lane and occupies the roadway ahead, slowing the ego vehicle's progress. A white truck in the right-side adjacent lanes continues straight without merging. A pedestrian is visible ahead on the right behind the guardrail, staying off the road. Yellow chevron signs with red arrows indicate the leftward bend.", "hazard_reasoning": "The main risk is the silver truck merging across in front of the ego vehicle from the left lane into the ego lane. That lane change narrows the available space and forces the driver to slow or steer to maintain separation, so yielding is needed to avoid a collision."}
{"id": "train_09367", "split": "train", "clip_key": "titan_clip_1388_000474_movie", "source": {"subset": "titan", "scenario": "clip_1388", "frame": "000474"}, "frames": ["titan_clip_1388_000474_movie_t-3.jpg", "titan_clip_1388_000474_movie_t-2.jpg", "titan_clip_1388_000474_movie_t-1.jpg", "titan_clip_1388_000474_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cones", "environment_perception": "The scene shows a narrow urban two-way local road with worn pavement leading to a T-junction beneath an elevated structure. Construction fencing lines the sides, and there are no oncoming vehicles visible. Red and blue cones are placed along the left side of the ego lane, reducing the available driving space. A worker in a reflective vest appears from the right and crosses the lane near the stop line. At the junction, a white van on the cross street travels rightward ahead of the ego vehicle. A bicyclist is also moving slowly along the left verge beside the cones and may enter the narrowed lane. A Japanese stop sign and large stop marking indicate the vehicle must stop at the intersection.", "hazard_reasoning": "The main risk is the road construction on the left, where cones extend into the ego lane and constrain the path ahead. Because the lane is narrowed by these cones, the driver needs to proceed cautiously and keep clear of them to pass safely."}
{"id": "train_09368", "split": "train", "clip_key": "titan_clip_312_000438_movie", "source": {"subset": "titan", "scenario": "clip_312", "frame": "000438"}, "frames": ["titan_clip_312_000438_movie_t-3.jpg", "titan_clip_312_000438_movie_t-2.jpg", "titan_clip_312_000438_movie_t-1.jpg", "titan_clip_312_000438_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre", "environment_perception": "The scene shows a narrow urban two-way road without a centerline, bordered by midrise buildings and with light traffic. Ahead, a silver sedan is coming toward the camera in the ego lane. On the left curb, a white truck appears stopped for loading and reduces the available space. At the right edge, two pedestrians are near the roadway, with one close to the lane beside traffic cones. A black van is also parked on the left with its rear door open, and a worker with equipment is beside it, creating a small roadside work area.", "hazard_reasoning": "The main concern is the silver sedan approaching directly in the ego lane. Because it is moving toward the ego vehicle on this narrow street, it could force an unexpected conflict if space becomes tight. The driver should be ready to maneuver cautiously to avoid a collision."}
{"id": "train_09369", "split": "train", "clip_key": "2020-0220-151845_048269_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-151845_048269_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-151845_048269_movie_t-3_augB1.jpg", "2020-0220-151845_048269_movie_t-2_augB1.jpg", "2020-0220-151845_048269_movie_t-1_augB1.jpg", "2020-0220-151845_048269_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene shows an urban three-lane roadway beneath an elevated expressway, with heavy slow-moving traffic on smooth pavement marked by a central crack. Barricades and a small construction zone are along the left shoulder, and blue overhead direction signs are visible above. A tarp-covered flatbed truck ahead in the ego lane is moving very slowly and leading the flow. A silver scooter from the left lane moves into the ego lane near the truck, briefly intruding into the ego vehicle’s path, while queued cars in adjacent lanes limit available space.", "hazard_reasoning": "The key hazard is the silver scooter merging from the left lane into the ego lane. It enters unexpectedly in congested traffic, creating a direct conflict with the ego path. Because the scooter is cutting in close ahead, reducing speed is the safest response to avoid a collision and adapt to the slow, crowded flow."}
{"id": "train_09370", "split": "train", "clip_key": "2020-0129-105040_084027_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "084027"}, "frames": ["2020-0129-105040_084027_movie_t-3.jpg", "2020-0129-105040_084027_movie_t-2.jpg", "2020-0129-105040_084027_movie_t-1.jpg", "2020-0129-105040_084027_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "be aware of cones", "environment_perception": "This is an urban side street with a narrow two-way roadway, dry pavement, and light traffic. A row of traffic cones runs along the right edge, compressing the available lane as the road continues straight beside a fenced sports field. A cyclist is moving ahead near the right fence at a slow pace, close to the cones and limiting room to pass. In the distance, an oncoming car is visible in the opposite lane but stays on its own side. On the left, a person is standing near a storefront beside parked bicycles without stepping into the road. A round speed-limit sign is mounted on a pole along the left side.", "hazard_reasoning": "The main concern is the line of traffic cones on the right side of the lane. They suggest a temporary obstruction or roadwork zone, so the driver should slow down and keep position carefully while passing through the narrowed section."}
{"id": "train_09371", "split": "train", "clip_key": "2020-0210-101957_045850_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "045850"}, "frames": ["2020-0210-101957_045850_movie_t-3.jpg", "2020-0210-101957_045850_movie_t-2.jpg", "2020-0210-101957_045850_movie_t-1.jpg", "2020-0210-101957_045850_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Start moving", "environment_perception": "The scene is an urban divided roadway with two lanes in each direction and a painted median, with dry pavement and traffic gradually loosening from congestion to a slow crawl. In the ego lane ahead, a black hatchback is beginning to roll forward and is now setting the pace for the ego vehicle. In the adjacent lane ahead-left, a small white box truck is also inching along beside the ego car. A line of vehicles farther ahead continues creeping toward the next signalized intersection, while oncoming traffic on the right, including a white truck, moves normally in the opposite direction.", "hazard_reasoning": "The main hazard is the black hatchback ahead in the ego lane beginning to move as traffic clears, creating a lane-change/merge situation directly in front of the ego car. The ego vehicle should start moving to keep a safe following gap as that car merges ahead."}
{"id": "train_09372", "split": "train", "clip_key": "2020-0228-102841_049486_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "049486"}, "frames": ["2020-0228-102841_049486_movie_t-3.jpg", "2020-0228-102841_049486_movie_t-2.jpg", "2020-0228-102841_049486_movie_t-1.jpg", "2020-0228-102841_049486_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the merging van", "environment_perception": "The scene shows an urban underpass road with a clear paved lane opening into daylight, bordered by concrete walls and a barrier on the right. Traffic remains sparse and calm. A white van ahead near the exit moves in from the left ramp into the ego lane and then carries on straight, briefly becoming the lead vehicle. A small car farther ahead continues straight in the same direction and does not interact with the ego vehicle. No other notable signals or threats are visible.", "hazard_reasoning": "The key hazard is the white van merging from the left ramp into the ego lane. Because it is entering the lane directly ahead, it may alter the path unexpectedly and create a collision risk, so it should be monitored carefully."}
{"id": "train_09373", "split": "train", "clip_key": "2020-0218-103119_002897_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002897"}, "frames": ["2020-0218-103119_002897_movie_t-3.jpg", "2020-0218-103119_002897_movie_t-2.jpg", "2020-0218-103119_002897_movie_t-1.jpg", "2020-0218-103119_002897_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the approaching van", "environment_perception": "A straight urban multi-lane road with dry, well-maintained pavement is visible, and the two directions are separated by a broad painted chevron buffer. Traffic is light to moderate. The ego vehicle is in the left lane behind a dark car moving steadily ahead. A white van farther forward in a neighboring lane continues straight. In the oncoming lanes on the right, a gray van is traveling toward the ego vehicle while staying on its side of the divider. Bright sunlight from the upper left causes glare and slightly reduces clarity in the distance.", "hazard_reasoning": "The main concern is the gray van approaching from the opposite direction in the right-side lane. Because it is coming toward the ego vehicle and remains close to the divided roadway, there is a possible conflict if its path shifts, so the driver should be ready to yield to prevent a collision."}
{"id": "train_09374", "split": "train", "clip_key": "titan_clip_276_000384_movie", "source": {"subset": "titan", "scenario": "clip_276", "frame": "000384"}, "frames": ["titan_clip_276_000384_movie_t-3.jpg", "titan_clip_276_000384_movie_t-2.jpg", "titan_clip_276_000384_movie_t-1.jpg", "titan_clip_276_000384_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "This is a narrow urban two-way street with smooth pavement and light traffic. Ahead in the ego lane, a white flatbed truck is slowing and backing into a parking space on the left from the middle of the road, momentarily taking up the lane and affecting the ego vehicle’s path. A bicyclist is visible farther ahead near the centerline, continuing straight in the same direction while staying to the right and out of the ego lane. Parked cars line both sides, and a black minivan on the left is close enough to reduce side clearance.", "hazard_reasoning": "The main concern is the white truck reversing into a parking space from the roadway in front of the ego car. This unexpected reverse movement across the lane creates a collision risk unless the driver stops immediately."}
{"id": "train_09375", "split": "train", "clip_key": "titan_clip_312_000438_movie", "source": {"subset": "titan", "scenario": "clip_312", "frame": "000438"}, "frames": ["titan_clip_312_000438_movie_t-3.jpg", "titan_clip_312_000438_movie_t-2.jpg", "titan_clip_312_000438_movie_t-1.jpg", "titan_clip_312_000438_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre", "environment_perception": "A narrow urban two-way street without a centerline extends between midrise buildings, with smooth pavement and sparse traffic. Ahead, a silver sedan is coming toward the camera in the ego lane. On the left curb, a white truck is stopped, likely for loading, which reduces the available space. Near the right roadside, two pedestrians are walking, and one is close to the lane beside a row of traffic cones. Also on the left, a black van is parked with its rear door open, with a worker and equipment beside it, creating a small work area.", "hazard_reasoning": "The main threat is the silver sedan approaching directly in the ego lane toward the ego vehicle. Because it is oncoming and close in the same narrow roadway, it could require an unexpected avoidance maneuver and raises the risk of a collision, so the driver should move carefully."}
{"id": "train_09376", "split": "train", "clip_key": "2020-0129-105040_084027_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "084027"}, "frames": ["2020-0129-105040_084027_movie_t-3.jpg", "2020-0129-105040_084027_movie_t-2.jpg", "2020-0129-105040_084027_movie_t-1.jpg", "2020-0129-105040_084027_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "be aware of cones", "environment_perception": "This is a narrow urban two-way street with dry pavement and sparse traffic. A line of traffic cones runs along the right edge, tightening the lane as it passes a fenced sports area. A cyclist is moving slowly ahead near the right fence, close to the cones and limiting room for the ego vehicle to pass. In the distance, an oncoming car is visible in the opposite lane and stays within its own side. On the left, a person stands near a storefront beside parked bicycles without stepping into the road, and a round speed-limit sign is mounted on a pole along that frontage.", "hazard_reasoning": "The most relevant hazard is the row of cones along the right side of the lane. They suggest a temporary roadside restriction or work zone, so the driver should slow down and keep position carefully while passing through the narrowed section."}
{"id": "train_09377", "split": "train", "clip_key": "titan_clip_1077_000438_movie", "source": {"subset": "titan", "scenario": "clip_1077", "frame": "000438"}, "frames": ["titan_clip_1077_000438_movie_t-3.jpg", "titan_clip_1077_000438_movie_t-2.jpg", "titan_clip_1077_000438_movie_t-1.jpg", "titan_clip_1077_000438_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the cone", "environment_perception": "The scene is an uphill, narrow two-way urban street with no center line, bordered by buildings. The road surface is mostly smooth with a few patches, traffic is light, and pedestrians are present in the roadway. Several people ahead in the ego lane are walking uphill in the same direction near the middle of the road, making the passage narrower. On the right side, a pedestrian by a storefront edges a little into the street while moving toward the camera, which could bring them into the ego lane. On the left, a crouching worker remains next to a construction area, and a row of orange traffic cones, including one near the ego vehicle, reduces the usable width. A red A-frame sign is also placed at the right curb.", "hazard_reasoning": "The main hazard is the traffic cone on the left side of the road. It indicates a work zone encroaching into the driving lane, so the driver needs to steer carefully around it to avoid contact and keep a safe margin."}
{"id": "train_09378", "split": "train", "clip_key": "2020-0225-102455_017121_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "017121"}, "frames": ["2020-0225-102455_017121_movie_t-3.jpg", "2020-0225-102455_017121_movie_t-2.jpg", "2020-0225-102455_017121_movie_t-1.jpg", "2020-0225-102455_017121_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of truck merging left", "environment_perception": "This is an urban multilane roadway with chevron buffer markings and no median, with dry, clear pavement and moderate, steady traffic flow. A white box truck ahead shifts left into the lane beside it, moving in front of the ego vehicle and briefly limiting its progress. Vehicles in the right-side lanes keep traveling straight at a consistent pace, with some passing the ego car. Parked cars along the left curb stay stationary and reduce the available space near the merging truck.", "hazard_reasoning": "The main concern is the white truck moving left across the ego vehicle's forward path. Because it is changing lanes directly ahead, it could interfere with the ego car's movement, so the driver should remain cautious and be ready to slow down if needed."}
{"id": "train_09379", "split": "train", "clip_key": "2020-0210-101957_012888_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "012888"}, "frames": ["2020-0210-101957_012888_movie_t-3.jpg", "2020-0210-101957_012888_movie_t-2.jpg", "2020-0210-101957_012888_movie_t-1.jpg", "2020-0210-101957_012888_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of red van lane change", "environment_perception": "An urban two-way roadway with two lanes in the ego direction and clear pavement shows the vehicle continuing straight with light traffic. Slightly ahead to the right, a red van is moving left from the ego lane into the adjacent left lane. Along the left curb, a black taxi is stopped at the edge and does not appear to be entering traffic. In the opposite direction, a white van and a bus are approaching in their lanes without drifting over. An overhead sign mentions Shinjuku City.", "hazard_reasoning": "The main concern is the red van, which is actively shifting from the ego lane into the left lane. That lane change could interfere with the ego vehicle’s path, so it should be treated as the primary hazard and watched closely for possible conflict."}
{"id": "train_09380", "split": "train", "clip_key": "2020-0220-151845_026030_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "026030"}, "frames": ["2020-0220-151845_026030_movie_t-3.jpg", "2020-0220-151845_026030_movie_t-2.jpg", "2020-0220-151845_026030_movie_t-1.jpg", "2020-0220-151845_026030_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "On an urban road beneath elevated structures, three lanes moving in the same direction lead into a junction, with smooth pavement and moderate traffic ahead. A black van in front of the ego vehicle moves left through the intersection to join the left lane as congestion forms ahead. A silver van slightly ahead in the right lane keeps going straight at about the same speed. A small white kei truck in the left lane is moving slowly near the ego car, leaving less room for the black van to enter.", "hazard_reasoning": "The main risk is the black van making an unexpected leftward lane change/merge in the intersection while traffic is building ahead. Because the gap on the left is limited, the ego vehicle should slow down and be ready to react safely to the van's movement."}
{"id": "train_09381", "split": "train", "clip_key": "titan_clip_1077_000438_movie", "source": {"subset": "titan", "scenario": "clip_1077", "frame": "000438"}, "frames": ["titan_clip_1077_000438_movie_t-3.jpg", "titan_clip_1077_000438_movie_t-2.jpg", "titan_clip_1077_000438_movie_t-1.jpg", "titan_clip_1077_000438_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the cone", "environment_perception": "A narrow uphill urban two-way street with no center line passes between buildings. The road surface is mostly smooth with a few patched areas, and traffic is sparse, but pedestrians are using the roadway. Several people ahead in the ego lane are walking uphill in the same direction near the middle of the road, leaving limited room to pass. At the right edge, a pedestrian beside a storefront is edging slightly into the street while facing toward the camera, which could bring them into the ego lane. On the left side, a crouched worker remains next to a construction area, and a row of orange traffic cones, one positioned close to the vehicle, narrows the drivable space. A red A-frame sign is also visible by the right curb.", "hazard_reasoning": "The closest relevant hazard is the traffic cone on the left side of the roadway. Because it indicates a work zone encroaching into the driving path, the vehicle needs to steer around it to avoid contact and keep a safe margin."}
{"id": "train_09382", "split": "train", "clip_key": "2020-0218-103119_002897_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002897"}, "frames": ["2020-0218-103119_002897_movie_t-3.jpg", "2020-0218-103119_002897_movie_t-2.jpg", "2020-0218-103119_002897_movie_t-1.jpg", "2020-0218-103119_002897_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the approaching van", "environment_perception": "The scene shows a straight urban multi-lane road with dry, smooth pavement and opposing traffic separated by a broad painted chevron buffer. Traffic is light to moderate. The ego vehicle is in the left lane, following a dark car that continues ahead at a steady speed. A white van is also visible farther ahead in a parallel same-direction lane, moving straight. To the right, in the oncoming lanes, a gray van is traveling toward the ego vehicle while staying beyond the painted divider. Sun glare from the upper left slightly reduces clarity in the distance.", "hazard_reasoning": "The gray van in the oncoming lane is the main concern because it is approaching the ego vehicle. Since it is closing in from the right side, there is a possible risk of it encroaching into the ego vehicle’s path, so the driver should be ready to yield and avoid a collision."}
{"id": "train_09383", "split": "train", "clip_key": "2020-0218-103119_002897_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002897"}, "frames": ["2020-0218-103119_002897_movie_t-3.jpg", "2020-0218-103119_002897_movie_t-2.jpg", "2020-0218-103119_002897_movie_t-1.jpg", "2020-0218-103119_002897_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the approaching van", "environment_perception": "A straight urban arterial with multiple lanes stretches ahead on dry, clean pavement, and the two directions are separated by a broad painted chevron buffer. Traffic is light to moderate. The ego vehicle is in the left lane, following a dark car that continues steadily in front. A white van is farther ahead in an adjacent lane traveling in the same direction without lane changes. On the opposite side of the buffer, a gray van is coming toward us in the right-side oncoming lane. Bright sunlight from the upper left causes some glare and makes distant objects less clear.", "hazard_reasoning": "The gray van is the main concern because it is moving toward the ego vehicle from the oncoming lane on the right. Although it remains across the painted divider, its approach creates a potential conflict if it drifts into the ego vehicle's path, so caution and yielding are appropriate to avoid a crash."}
{"id": "train_09384", "split": "train", "clip_key": "2020-0227-104226_033838_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "033838"}, "frames": ["2020-0227-104226_033838_movie_t-3.jpg", "2020-0227-104226_033838_movie_t-2.jpg", "2020-0227-104226_033838_movie_t-1.jpg", "2020-0227-104226_033838_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a narrow urban road with smooth pavement and no median leading straight to a signalized intersection, with moderate traffic. A white box truck ahead in the ego lane is signaling and moving right into the adjacent lane in front of the ego vehicle. On the right side, a small silver hatchback is edging forward near the lane line, leaving less room for the truck’s merge. Another truck is visible farther ahead in the right lane, moving slowly near the crosswalk.", "hazard_reasoning": "The main risk is the white truck merging into the right lane directly ahead of the ego vehicle. As it shifts across, the available gap may tighten and the flow may slow, so the safest response is to stay behind it and keep a proper following distance while anticipating its movement."}
{"id": "train_09385", "split": "train", "clip_key": "2020-0212-150403_013404_movie", "source": {"subset": "drama", "scenario": "2020-0212-150403", "frame": "013404"}, "frames": ["2020-0212-150403_013404_movie_t-3.jpg", "2020-0212-150403_013404_movie_t-2.jpg", "2020-0212-150403_013404_movie_t-1.jpg", "2020-0212-150403_013404_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows an urban multi-lane road with a painted median and clear pavement, carrying moderate traffic moving in the same direction. On the left side, a white mid-size SUV is merging into the ego lane ahead from the left lane, with a large box truck stopped there prompting the merge. A black van is moving slowly in front of the ego vehicle and limiting its pace. In the right lane, a dark minivan continues forward and passes by. There are no visible work zones or special signals.", "hazard_reasoning": "The main risk is the white SUV moving across from the left lane into the ego lane directly ahead, triggered by the stopped truck. This creates a lane-change merge situation that could lead to a collision if the ego vehicle does not slow down and keep a safe gap."}
{"id": "train_09386", "split": "train", "clip_key": "2020-0203-114632_002173_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "002173"}, "frames": ["2020-0203-114632_002173_movie_t-3.jpg", "2020-0203-114632_002173_movie_t-2.jpg", "2020-0203-114632_002173_movie_t-1.jpg", "2020-0203-114632_002173_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the green truck", "environment_perception": "This is a busy urban shopping road with one lane in each direction, marked mainly by painted center lines on smooth green pavement. A green truck is approaching in the opposing lane on the right, staying near the centerline and moving toward the ego vehicle. Ahead in the ego lane, a small white car continues away at a moderate pace. A white van is parked on the right curb of the oncoming side by a storefront, which tightens that lane but does not block the ego lane. Pedestrians are visible on both sidewalks behind railings.", "hazard_reasoning": "The main concern is the green truck coming toward the ego car in the adjacent lane. Because it is close and traveling opposite the ego vehicle, it could demand attention and increase the chance of a sudden evasive response if its position changes. This makes it the most relevant hazard to monitor."}
{"id": "train_09387", "split": "train", "clip_key": "titan_clip_668_000408_movie", "source": {"subset": "titan", "scenario": "clip_668", "frame": "000408"}, "frames": ["titan_clip_668_000408_movie_t-3.jpg", "titan_clip_668_000408_movie_t-2.jpg", "titan_clip_668_000408_movie_t-1.jpg", "titan_clip_668_000408_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of the scooter merging right", "environment_perception": "The scene shows a narrow urban shopping road with smooth pavement, no centerline, and light two-way traffic on a single carriageway without a median. Directly ahead, a white scooter is traveling in front of the ego vehicle and drifting toward the right side, with no separate lane available. On the right, a group of pedestrians waits near the curb by the shops, with some moving along the sidewalk while facing the roadway. On the left sidewalk, several pedestrians walk near the edge of the road but stay off the carriageway. No clear traffic lights or speed signs are visible.", "hazard_reasoning": "The main concern is the white scooter ahead, which is moving forward and edging to the right in front of the ego car. Since there is no other lane, it could continue into your path or merge right, creating a high-risk situation that requires immediate attention."}
{"id": "train_09388", "split": "train", "clip_key": "titan_clip_98_000120_movie", "source": {"subset": "titan", "scenario": "clip_98", "frame": "000120"}, "frames": ["titan_clip_98_000120_movie_t-3.jpg", "titan_clip_98_000120_movie_t-2.jpg", "titan_clip_98_000120_movie_t-1.jpg", "titan_clip_98_000120_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the traffic cone", "environment_perception": "A busy-looking urban two-way road with a single narrow lane in each direction stretches between tall buildings, and the roadway appears clear and dry. A cyclist is moving straight ahead in the ego lane toward the intersection, limiting forward speed. A black minivan is stopped along the right curb, with its rear edge slightly extending into the lane. Several pedestrians are crossing the crosswalk ahead from both sides, while others wait at the corners. A traffic cone is placed on the left side of the ego lane.", "hazard_reasoning": "The most relevant hazard is the traffic cone positioned on the left side of the lane. It can partially block the driving path and may suggest nearby road work, so the vehicle should pass with caution and adjust its path carefully."}
{"id": "train_09389", "split": "train", "clip_key": "titan_clip_98_000120_movie", "source": {"subset": "titan", "scenario": "clip_98", "frame": "000120"}, "frames": ["titan_clip_98_000120_movie_t-3.jpg", "titan_clip_98_000120_movie_t-2.jpg", "titan_clip_98_000120_movie_t-1.jpg", "titan_clip_98_000120_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the traffic cone", "environment_perception": "The scene shows a narrow two-way urban street bordered by tall buildings, with one lane in each direction and light traffic. A cyclist is moving straight ahead in the ego lane toward the intersection, slowing the available space. Up ahead, a black minivan is stopped by the right curb with part of its rear extending slightly into the lane. Several pedestrians are visible crossing the crosswalk ahead, while others wait at the corners. A traffic cone is placed on the left side of the ego lane.", "hazard_reasoning": "The main concern is the traffic cone on the left edge of the lane. It can partially block the driving path and suggest nearby road work, so the driver should pass with caution and keep clear of it."}
{"id": "train_09390", "split": "train", "clip_key": "2020-0227-153144_016511_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "016511"}, "frames": ["2020-0227-153144_016511_movie_t-3.jpg", "2020-0227-153144_016511_movie_t-2.jpg", "2020-0227-153144_016511_movie_t-1.jpg", "2020-0227-153144_016511_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is a multi-lane urban road with a broad painted median separating opposing traffic, and the ego vehicle is moving along a smooth roadway in moderate, steady traffic. A black sedan ahead is drifting from the ego lane into the left lane, opening space in front of the ego vehicle. In the right-adjacent lane, a dark van continues straight at roughly the same speed, and a motorcycle in the outer right lane is traveling slightly ahead. No roadworks, barriers, or other unusual obstacles are present.", "hazard_reasoning": "The main concern is the black sedan ahead changing left from the ego lane. Its movement can tighten the available gap in front of the ego car and may call for braking to keep spacing safe, so the appropriate response is to slow down."}
{"id": "train_09391", "split": "train", "clip_key": "2020-0203-114632_002173_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "002173"}, "frames": ["2020-0203-114632_002173_movie_t-3.jpg", "2020-0203-114632_002173_movie_t-2.jpg", "2020-0203-114632_002173_movie_t-1.jpg", "2020-0203-114632_002173_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the green truck", "environment_perception": "This is a busy urban shopping street with one lane in each direction, marked only by painted lines on smooth greenish pavement, and traffic is light and steady. A green truck is approaching in the oncoming lane on the right, staying close to the centerline. Ahead in the ego lane, a small white car is moving away at a moderate pace. A white van is parked along the right curb on the oncoming side near a storefront, which narrows that lane but does not interfere with the ego vehicle’s path. Pedestrians are visible on both sidewalks behind metal railings.", "hazard_reasoning": "The main concern is the green truck coming toward the ego vehicle in the adjacent lane. Because it is relatively close, there is a potential risk if it drifts inward or requires an unexpected maneuver, so it should be monitored carefully."}
{"id": "train_09392", "split": "train", "clip_key": "2020-0221-115122_030754_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "030754"}, "frames": ["2020-0221-115122_030754_movie_t-3.jpg", "2020-0221-115122_030754_movie_t-2.jpg", "2020-0221-115122_030754_movie_t-1.jpg", "2020-0221-115122_030754_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid collision", "environment_perception": "This scene shows a multi-lane urban road beneath an elevated expressway, with smooth pavement and a guardrail along the right side. Traffic is moderate and moving slowly. In the ego lane, a white hatchback ahead is reducing speed as a white minivan from the left lane moves into the space ahead of it, limiting the flow. On the right, a small flatbed truck is slightly ahead in its lane and continues steadily without merging. Farther forward under the overpass, a large box truck is traveling slowly in the middle lanes with the rest of traffic. No other notable hazards are visible.", "hazard_reasoning": "The main risk is the white hatchback in front of the ego vehicle slowing because the white minivan has cut in ahead of it. Since this is directly in the ego lane and the gap is tightening, the driver should slow down to avoid a collision."}
{"id": "train_09393", "split": "train", "clip_key": "titan_clip_500_000726_movie", "source": {"subset": "titan", "scenario": "clip_500", "frame": "000726"}, "frames": ["titan_clip_500_000726_movie_t-3.jpg", "titan_clip_500_000726_movie_t-2.jpg", "titan_clip_500_000726_movie_t-1.jpg", "titan_clip_500_000726_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the traffic cone", "environment_perception": "The scene shows a narrow urban two-way street with worn, patched pavement and no distinct lane markings, while the ego vehicle moves slowly ahead. On the right curbside, a silver van is parked or stopped, and several traffic cones beside it reduce the usable road width. A white delivery truck is in the left foreground, with another flatbed farther up on the left, making the passage feel tight. A person is standing near the front-left truck close to the road edge and remains near the vehicle's travel path.", "hazard_reasoning": "The cone on the right side signals a roadside obstruction and possible roadwork area. Because it narrows the driving space and may interfere with the ego vehicle's path, the driver needs to pass through cautiously."}
{"id": "train_09394", "split": "train", "clip_key": "titan_clip_668_000408_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_668_000408_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_668_000408_movie_t-3_augB1.jpg", "titan_clip_668_000408_movie_t-2_augB1.jpg", "titan_clip_668_000408_movie_t-1_augB1.jpg", "titan_clip_668_000408_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of the scooter merging right", "environment_perception": "The scene shows a narrow urban shopping road with smooth pavement, no painted center line, and no median, functioning like a two-way single carriageway with light traffic. In the lane ahead, a white scooter is traveling forward and edging a bit toward the ego vehicle’s right side while staying near the middle of the roadway. To the right, several pedestrians are gathered close to the curb by the shops, with some moving along the sidewalk and looking toward the road. On the left sidewalk, a few pedestrians walk alongside traffic but remain off the driving area. No clear traffic lights or speed signs are visible.", "hazard_reasoning": "The main concern is the white scooter ahead, which is moving forward and drifting right in front of the ego vehicle on a road without a separate lane. Because of this position and motion, it could merge further into the ego vehicle’s path, creating an immediate risk that should be monitored closely."}
{"id": "train_09395", "split": "train", "clip_key": "2020-0227-104226_054574_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054574"}, "frames": ["2020-0227-104226_054574_movie_t-3.jpg", "2020-0227-104226_054574_movie_t-2.jpg", "2020-0227-104226_054574_movie_t-1.jpg", "2020-0227-104226_054574_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "The scene shows an urban two-way road with a painted centerline and one lane in each direction. The pavement is clear and traffic is moving steadily. The ego vehicle is traveling in the left lane behind a silver hatchback that continues straight at a slow pace. To the right, a black hatchback approaches in the opposing lane and comes near the centerline, while additional oncoming cars are visible farther ahead. A pedestrian signal on the left displays a green walk symbol.", "hazard_reasoning": "The main concern is the black hatchback coming toward the ego vehicle in the oncoming lane. Since it is moving directly opposite the ego car and close to the centerline, it creates a potential collision threat. The safest response is to yield and maintain caution."}
{"id": "train_09396", "split": "train", "clip_key": "2020-0203-114632_002173_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "002173"}, "frames": ["2020-0203-114632_002173_movie_t-3.jpg", "2020-0203-114632_002173_movie_t-2.jpg", "2020-0203-114632_002173_movie_t-1.jpg", "2020-0203-114632_002173_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the green truck", "environment_perception": "This is a busy urban shopping street with a single lane in each direction, separated only by painted markings on a smooth green-tinted road surface. Traffic is light and moving steadily. A green truck is coming toward the ego vehicle in the oncoming lane on the right, staying close to the centerline. Ahead in the ego lane, a small white car is traveling away at a moderate pace. On the far right curb of the oncoming side, a white van is stopped by a storefront, which narrows that lane but does not interfere with the ego vehicle’s path. Pedestrians are visible walking behind metal railings on both sidewalks.", "hazard_reasoning": "The main concern is the green truck approaching in the adjacent oncoming lane. Its closeness to the ego vehicle’s side means it should be watched carefully, since any drift or unexpected movement could require a quick reaction. This makes it a moderate-risk oncoming-vehicle hazard."}
{"id": "train_09397", "split": "train", "clip_key": "titan_clip_500_000726_movie", "source": {"subset": "titan", "scenario": "clip_500", "frame": "000726"}, "frames": ["titan_clip_500_000726_movie_t-3.jpg", "titan_clip_500_000726_movie_t-2.jpg", "titan_clip_500_000726_movie_t-1.jpg", "titan_clip_500_000726_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the traffic cone", "environment_perception": "The scene shows a narrow urban two-way street with patched, uneven pavement and no clear lane markings. The ego vehicle is moving slowly forward with light traffic around it. Ahead on the right curb, a silver van is stopped, and traffic cones beside it reduce the usable road space. On the left, a white delivery truck is close in the foreground, with another flatbed truck farther ahead, making the passage feel tight. A person is standing near the front left truck close to the roadway and remains near the ego vehicle’s projected path.", "hazard_reasoning": "The visible traffic cone on the right marks an obstruction along the roadside. Because it narrows the available path and may interfere with the vehicle’s movement, the driver should proceed cautiously and steer around it carefully."}
{"id": "train_09398", "split": "train", "clip_key": "2020-0204-150838_061738_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "061738"}, "frames": ["2020-0204-150838_061738_movie_t-3.jpg", "2020-0204-150838_061738_movie_t-2.jpg", "2020-0204-150838_061738_movie_t-1.jpg", "2020-0204-150838_061738_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "The scene shows a dry, smooth urban two-lane road traveling in the same direction beneath an elevated expressway, with dense and slow-moving traffic. A large white box truck is directly in front of the ego vehicle in the same lane and is almost stopped, limiting forward movement. On the left side near the curb, a gray van is edging into the ego lane from the roadside. In the right lane, a silver hatchback is pulling alongside and then moving ahead of the queue, while a white minivan farther ahead continues creeping forward with traffic.", "hazard_reasoning": "The main risk is the gray van merging in from the left into the ego lane. This cut-in narrows the available space and could lead to a collision if the ego vehicle does not yield promptly."}
{"id": "train_09399", "split": "train", "clip_key": "2020-0227-104226_033356_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-104226_033356_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-104226_033356_movie_t-3_augB1.jpg", "2020-0227-104226_033356_movie_t-2_augB1.jpg", "2020-0227-104226_033356_movie_t-1_augB1.jpg", "2020-0227-104226_033356_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows an urban two-way road with two ego-direction lanes, an orange centerline, shops, and utility poles along the roadside; the surface is dry and traffic is moderate. A white box truck ahead in the ego lane drifts left and enters the adjacent left lane directly in front of the ego vehicle, briefly limiting the ego car’s forward progress. Beyond the centerline, a white van is coming toward the camera in the opposite direction, staying in its own lane. Farther left, several buses travel on a separated side lane behind a railing and remain uninvolved.", "hazard_reasoning": "The main hazard is the white truck merging left in front of the ego car from the ego lane into the left lane. This lane change can tighten the available space ahead and requires the driver to keep back at a safe distance to reduce the chance of a collision."}
{"id": "train_09400", "split": "train", "clip_key": "2020-0210-155354_035913_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "035913"}, "frames": ["2020-0210-155354_035913_movie_t-3.jpg", "2020-0210-155354_035913_movie_t-2.jpg", "2020-0210-155354_035913_movie_t-1.jpg", "2020-0210-155354_035913_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of lane change ahead", "environment_perception": "This is an urban multi-lane roadway with smooth pavement and heavy stop-and-go traffic. In the ego lane, a dark hatchback directly ahead is moving slowly and braking. Just in front of it, a black sedan starts drifting left into the adjacent curbside lane as it works through the congestion, crossing the dashed lane marking. Farther left near the curb, a white van is nearly stopped and adds to the blockage in that area. Blue overhead direction signs can be seen above the road.", "hazard_reasoning": "The main hazard is the black sedan ahead beginning a lane change from the ego lane into the left lane because of traffic buildup. This movement could create a conflict with nearby traffic, so the driver should anticipate the merge and keep a safe following gap."}
{"id": "train_09401", "split": "train", "clip_key": "2020-0220-102630_027987_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_027987_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_027987_movie_t-3_augB1.jpg", "2020-0220-102630_027987_movie_t-2_augB1.jpg", "2020-0220-102630_027987_movie_t-1_augB1.jpg", "2020-0220-102630_027987_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene shows an urban two-way roadway with two lanes in the same direction, bordered by mid-rise buildings and a clear, smooth road surface. A gray box truck ahead in the ego lane is starting to move right, preparing to merge into the right lane in front of the ego vehicle. A white car is already traveling in that right lane close to the truck, leaving less room for the maneuver. Farther ahead, a white van is visible in the opposite direction beyond the center line, but it is still separated from the ego path. A dedicated-use marking is visible on the left side of the road.", "hazard_reasoning": "The main risk is the gray truck changing lanes across the ego car’s forward path. Since it is shifting from the ego lane into the right lane, its movement could reduce the space ahead unexpectedly and interfere with the driver’s path. Slowing down is the safest response to keep a proper distance."}
{"id": "train_09402", "split": "train", "clip_key": "2020-0227-104226_054574_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054574"}, "frames": ["2020-0227-104226_054574_movie_t-3.jpg", "2020-0227-104226_054574_movie_t-2.jpg", "2020-0227-104226_054574_movie_t-1.jpg", "2020-0227-104226_054574_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "This is an urban two-way road with a painted centerline and one lane in each direction, with smooth pavement and moderate, steady flow. The ego vehicle is moving in the left lane. A silver hatchback ahead in the same lane is continuing straight at a slow pace and is effectively pacing the ego car. On the right, a black hatchback is coming toward the ego vehicle in the oncoming lane and stays close to the centerline. Several more oncoming cars are visible farther ahead, also traveling straight in their lane. A pedestrian signal on the left displays a green walk sign.", "hazard_reasoning": "The black hatchback in the opposite lane is approaching the ego vehicle directly instead of moving away. Because it is traveling toward the ego car in the oncoming lane, it creates a collision risk. The appropriate response is to yield to avoid an accident."}
{"id": "train_09403", "split": "train", "clip_key": "2020-0228-102841_004407_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "004407"}, "frames": ["2020-0228-102841_004407_movie_t-3.jpg", "2020-0228-102841_004407_movie_t-2.jpg", "2020-0228-102841_004407_movie_t-1.jpg", "2020-0228-102841_004407_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around barriers", "environment_perception": "An urban junction near an elevated railway is visible, with a narrow single-lane approach and worn, patched pavement. The ego vehicle has slowed to a stop at barriers because construction blocks the road ahead. A black sedan passes left to right on the cross street through the closed intersection, while a white van continues farther along the same road beyond the barricades. On the right, a construction truck is parked inside the fenced work area with materials and equipment nearby. A pedestrian is seen by the left railing but remains out of the ego lane. Ahead, a blue sign instructs traffic to turn left around the work zone, and cones with temporary fencing reinforce the closure.", "hazard_reasoning": "The main hazard is the road construction directly in front of the ego vehicle. The barriers and cones obstruct the roadway, so the driver must proceed cautiously and go around the work area to avoid a collision."}
{"id": "train_09404", "split": "train", "clip_key": "2020-0227-104226_033356_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "033356"}, "frames": ["2020-0227-104226_033356_movie_t-3.jpg", "2020-0227-104226_033356_movie_t-2.jpg", "2020-0227-104226_033356_movie_t-1.jpg", "2020-0227-104226_033356_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows an urban two-way road with two lanes in the ego direction, marked by an orange centerline, with shops and utility poles along the roadside; the road surface is dry and traffic is moderate. A white box truck ahead in the ego lane drifts left and merges into the adjacent left lane directly in front of the ego vehicle, briefly limiting the available path. Across the centerline, a white van is coming toward the ego car and stays in its own lane. Far to the left, several buses travel on a separated side lane behind a railing and are not involved.", "hazard_reasoning": "The key hazard is the white truck moving from the ego lane into the left lane ahead of the ego car. This lane-change merge can tighten the space in front of the ego vehicle, so the safest response is to keep behind it and maintain a proper gap to prevent a rear-end conflict."}
{"id": "train_09405", "split": "train", "clip_key": "2020-0227-104226_054574_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054574"}, "frames": ["2020-0227-104226_054574_movie_t-3.jpg", "2020-0227-104226_054574_movie_t-2.jpg", "2020-0227-104226_054574_movie_t-1.jpg", "2020-0227-104226_054574_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "The scene shows a paved urban two-way road with a single lane in each direction and a painted centerline, with traffic moving steadily. The ego vehicle is traveling in the left lane. Ahead in the same lane, a silver hatchback continues forward at a slow speed and sets the pace. To the right, a black hatchback is coming toward the ego vehicle in the opposing lane and stays close to the centerline. Several more oncoming cars are visible farther ahead in that lane, and a pedestrian signal on the left displays a green walk light.", "hazard_reasoning": "The main hazard is the black hatchback approaching in the oncoming lane toward the ego vehicle. Because it is traveling directly against the ego vehicle's direction and near the centerline, it creates a meaningful collision risk. The driver should yield to avoid a crash."}
{"id": "train_09406", "split": "train", "clip_key": "titan_clip_281_000534_movie", "source": {"subset": "titan", "scenario": "clip_281", "frame": "000534"}, "frames": ["titan_clip_281_000534_movie_t-3.jpg", "titan_clip_281_000534_movie_t-2.jpg", "titan_clip_281_000534_movie_t-1.jpg", "titan_clip_281_000534_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene is a narrow two-way urban road with worn but dry pavement and limited room on both sides. A white van ahead is moving in from the right curb into the ego lane and continues forward in the lane, reducing the available space and slowing the path ahead. A man stands on the right sidewalk near the curb beside parked bicycles, staying off the roadway. No oncoming traffic is visible, and there are no notable signs or speed markings. Small shopfront items and a signboard on the left further tighten the roadway margins.", "hazard_reasoning": "The main risk is the white van merging into the ego lane from the right. Because it is entering unexpectedly and occupying the driving path, there is a collision risk if the driver does not adjust speed and spacing. Slowing down is the appropriate response."}
{"id": "train_09407", "split": "train", "clip_key": "2020-0203-114632_066344_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "066344"}, "frames": ["2020-0203-114632_066344_movie_t-3.jpg", "2020-0203-114632_066344_movie_t-2.jpg", "2020-0203-114632_066344_movie_t-1.jpg", "2020-0203-114632_066344_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of merging truck", "environment_perception": "The scene shows an urban bridge on a two-way arterial in a built-up area, with two lanes in the ego direction, a double orange median, smooth roadway, and moderate traffic while the road bends gently to the right. A white truck ahead in the ego lane shifts right into the neighboring lane, briefly reducing headway as it crosses over. A dark vehicle ahead-right keeps moving steadily in that right lane and does not appear to merge. Vehicles in the opposite direction pass on the far side of the median without affecting us. A yellow merge warning sign is visible on the left railing.", "hazard_reasoning": "The main concern is the white truck directly ahead as it moves into the right lane. This lane change can intrude into the ego vehicle’s space, so it presents a clear merging hazard and requires caution to keep distance and prevent a collision."}
{"id": "train_09408", "split": "train", "clip_key": "2020-0228-102841_004407_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "004407"}, "frames": ["2020-0228-102841_004407_movie_t-3.jpg", "2020-0228-102841_004407_movie_t-2.jpg", "2020-0228-102841_004407_movie_t-1.jpg", "2020-0228-102841_004407_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around barriers", "environment_perception": "A city intersection near an elevated railway is visible, with a narrow single-lane approach and patched, uneven pavement. The ego vehicle comes to a stop at barriers because roadworks block the route ahead. On the cross street, a black sedan passes from left to right across the closed junction, while a white van continues along the same cross street beyond the barricades. Inside the fenced work area on the right, a construction truck is parked beside stacked equipment and materials. A pedestrian is seen near the left railing but remains out of the ego lane. Ahead, a blue direction sign points traffic left around the work zone, with cones and temporary fencing marking the closure.", "hazard_reasoning": "The main issue is the construction activity directly ahead of the ego vehicle. Because barriers and cones obstruct the roadway, the driver must proceed cautiously and navigate around the work site to avoid contact."}
{"id": "train_09409", "split": "train", "clip_key": "2020-0131-103016_055175_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "055175"}, "frames": ["2020-0131-103016_055175_movie_t-3.jpg", "2020-0131-103016_055175_movie_t-2.jpg", "2020-0131-103016_055175_movie_t-1.jpg", "2020-0131-103016_055175_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban multi-lane arterial runs toward a split under an elevated structure, with striped divider areas and clear pavement; traffic appears moderate and flowing steadily. A black van in the left lane, slightly ahead, is moving rightward to merge into the ego lane, reducing the available space in front. A white minivan directly ahead in the ego lane keeps going straight at a moderate pace and defines the ego vehicle’s speed. A red cargo truck ahead-right is in the adjacent diverging lane and slows near the gore, staying out of the ego lane. Blue overhead direction signs point to several districts, signal heads are visible ahead, and orange mesh barriers line the right-side separation zone.", "hazard_reasoning": "The main hazard is the black van from the left lane merging into the ego lane. Its lane-change movement may enter the vehicle’s path and create a conflict ahead, so reducing speed is the safest response to preserve distance and prevent a collision."}
{"id": "train_09410", "split": "train", "clip_key": "2020-0210-155354_010127_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "010127"}, "frames": ["2020-0210-155354_010127_movie_t-3.jpg", "2020-0210-155354_010127_movie_t-2.jpg", "2020-0210-155354_010127_movie_t-1.jpg", "2020-0210-155354_010127_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the oncoming hatchback.", "environment_perception": "This is a dry urban two-way road with one lane in each direction, no center median, and a zebra-crosswalk at the intersection. A silver hatchback is coming toward the ego car in the opposing lane while remaining in lane through the junction. In front of the ego vehicle, a small white van continues straight at a steady pace. Pedestrians are gathered on both sidewalks near the crossing, and a cyclist on the left shoulder moves slowly along the curb.", "hazard_reasoning": "The main concern is the silver hatchback traveling toward the ego car in the oncoming lane. If it were to keep closing in while occupying that opposing path, it could create a head-on collision risk, so the driver should slow and yield."}
{"id": "train_09411", "split": "train", "clip_key": "2020-0204-150838_060855_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_060855_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_060855_movie_t-3_augB1.jpg", "2020-0204-150838_060855_movie_t-2_augB1.jpg", "2020-0204-150838_060855_movie_t-1_augB1.jpg", "2020-0204-150838_060855_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield to merging bus", "environment_perception": "This is an urban two-lane roadway with a gentle left curve, bordered by warehouse buildings and a protected sidewalk. Traffic is light to moderate, and only vehicles traveling in the same direction are visible. Ahead in the right lane, a large white box truck is slowing down behind a white coach bus that is moving in from the left and merging into the right lane. The bus is taking position in front of the truck and may become part of the ego vehicle’s path. No clear signs, signals, oncoming traffic, or other obstacles stand out.", "hazard_reasoning": "The key risk is the white coach bus merging into the right lane ahead, which is causing the truck in front to slow. This creates an immediate lane-change merge hazard, so the driver should yield to the merging bus to avoid sudden braking and keep traffic flowing safely."}
{"id": "train_09412", "split": "train", "clip_key": "titan_clip_108_000192_movie", "source": {"subset": "titan", "scenario": "clip_108", "frame": "000192"}, "frames": ["titan_clip_108_000192_movie_t-3.jpg", "titan_clip_108_000192_movie_t-2.jpg", "titan_clip_108_000192_movie_t-1.jpg", "titan_clip_108_000192_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around parked truck", "environment_perception": "The scene shows an urban downtown road with one narrow lane in the ego vehicle’s direction and light traffic on smooth pavement. Along the left curb, a large flatbed truck is parked, and traffic cones partly close off that side, nudging the drivable space a bit to the right. Ahead, several pedestrians are crossing at the marked crosswalk near the intersection, while another pedestrian is on the right sidewalk near the curb by the storefronts. A red triangular stop sign is visible at the intersection.", "hazard_reasoning": "The main concern is the cone-lined partial blockage on the left caused by the parked truck. Because the usable lane is narrowed and the driver must pass this obstruction, careful steering is needed to avoid contact."}
{"id": "train_09413", "split": "train", "clip_key": "2020-0212-102546_080048_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "080048"}, "frames": ["2020-0212-102546_080048_movie_t-3.jpg", "2020-0212-102546_080048_movie_t-2.jpg", "2020-0212-102546_080048_movie_t-1.jpg", "2020-0212-102546_080048_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the white truck changing lanes", "environment_perception": "The scene shows an urban expressway bending to the right, with a wall and barrier along the right edge and a grassy embankment on the left. Traffic in the ego lane is light, while the right lane is packed with slow-moving vehicles. Ahead in the ego lane, a small white flatbed truck has its signal on and begins shifting right, apparently trying to move over because a larger truck in front is slowing down. A black sedan and several trucks in the right lane are crawling close to the barrier, leaving little room for the truck to merge. Blue overhead signs are visible farther ahead.", "hazard_reasoning": "The main hazard is the white truck moving from the ego lane into the right lane. Since the right lane is congested and the gap is limited, its lane change could interfere with the ego vehicle’s path. This creates a moderate risk, so the truck’s merge should be monitored carefully."}
{"id": "train_09414", "split": "train", "clip_key": "2020-0210-155354_010127_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "010127"}, "frames": ["2020-0210-155354_010127_movie_t-3.jpg", "2020-0210-155354_010127_movie_t-2.jpg", "2020-0210-155354_010127_movie_t-1.jpg", "2020-0210-155354_010127_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the oncoming hatchback.", "environment_perception": "This is an urban two-way road with one lane each way, no center divider, and a zebra-crosswalk intersection. The road surface looks dry and traffic is moderate. A silver hatchback is coming toward the ego car in the opposite lane as it passes through the intersection, while a small white van ahead in the ego lane continues straight and keeps a steady pace. Several pedestrians are waiting on both sidewalks near the crosswalk, and a cyclist along the left shoulder moves slowly by the curb.", "hazard_reasoning": "The main concern is the silver hatchback traveling toward the ego vehicle in the oncoming lane. If it were to remain in that path, it could create a head-on collision risk, so the appropriate response is to yield and avoid conflict."}
{"id": "train_09415", "split": "train", "clip_key": "titan_clip_108_000192_movie", "source": {"subset": "titan", "scenario": "clip_108", "frame": "000192"}, "frames": ["titan_clip_108_000192_movie_t-3.jpg", "titan_clip_108_000192_movie_t-2.jpg", "titan_clip_108_000192_movie_t-1.jpg", "titan_clip_108_000192_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around parked truck", "environment_perception": "This is a downtown urban road with one narrow lane for the ego vehicle and light traffic on smooth pavement. A row of traffic cones blocks part of the left side because a large flatbed truck is parked along the curb, forcing the available lane slightly to the right. In the distance, several pedestrians are crossing at the marked crosswalk near the intersection, and another pedestrian is near the right curb by the storefronts. A red stop sign is visible ahead at the intersection.", "hazard_reasoning": "The main issue is the cone line and parked truck narrowing the left side of the lane. Since the parked vehicle creates a partial obstruction, the driver needs to pass carefully and keep clear of the blocked area to avoid a collision."}
{"id": "train_09416", "split": "train", "clip_key": "titan_clip_880_000120_movie", "source": {"subset": "titan", "scenario": "clip_880", "frame": "000120"}, "frames": ["titan_clip_880_000120_movie_t-3.jpg", "titan_clip_880_000120_movie_t-2.jpg", "titan_clip_880_000120_movie_t-1.jpg", "titan_clip_880_000120_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the merging van", "environment_perception": "This is a narrow two-way urban street lined with shops and trees, with no median and dry, clear pavement. A white van ahead is pulling away from the left curb and moving into the ego lane directly in front of the car. A black sedan is passing close on the right in the opposite direction, and a white box truck continues straight farther ahead in the same lane. No obvious traffic signs or signals stand out.", "hazard_reasoning": "The main hazard is the white van merging into the ego vehicle’s path from the left. Its abrupt cut-in reduces the available gap ahead and creates a collision risk unless the driver yields and slows."}
{"id": "train_09417", "split": "train", "clip_key": "2020-0210-155354_010127_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "010127"}, "frames": ["2020-0210-155354_010127_movie_t-3.jpg", "2020-0210-155354_010127_movie_t-2.jpg", "2020-0210-155354_010127_movie_t-1.jpg", "2020-0210-155354_010127_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the oncoming hatchback.", "environment_perception": "The scene shows a dry urban two-way road with one lane in each direction, no center median, and a zebra-crosswalked intersection under moderate traffic. A silver hatchback is coming toward the ego vehicle in the opposing lane while remaining in lane through the intersection. In the ego lane, a small white van continues straight ahead at a steady pace. Pedestrians are gathered on both sidewalks near the crosswalk, and a cyclist on the left shoulder is moving slowly beside the curb.", "hazard_reasoning": "The main concern is the silver hatchback traveling toward the ego car in the oncoming lane. If it keeps approaching, it presents a potential head-on collision risk, so the driver should yield and stay alert to avoid impact."}
{"id": "train_09418", "split": "train", "clip_key": "titan_clip_456_000462_movie", "source": {"subset": "titan", "scenario": "clip_456", "frame": "000462"}, "frames": ["titan_clip_456_000462_movie_t-3.jpg", "titan_clip_456_000462_movie_t-2.jpg", "titan_clip_456_000462_movie_t-1.jpg", "titan_clip_456_000462_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cones ahead", "environment_perception": "The frames show an urban uphill road with a single lane in each direction and relatively light traffic. Orange traffic cones run along the right edge of the ego lane, forming a temporary narrowed passage. Ahead, a white truck is coming toward the camera in the opposite lane, staying aligned with its lane and moving slowly. On the left sidewalk, a pedestrian remains beside parked bicycles and does not enter the roadway, while a temporary sign with an upward arrow is posted near the left curb.", "hazard_reasoning": "The main concern is the row of orange cones beside the lane, which indicates roadside work and reduces available driving space. Because they constrict the lane and may affect positioning, the driver should proceed carefully and stay centered through the narrowed section."}
{"id": "train_09419", "split": "train", "clip_key": "2020-0218-151547_027602_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "027602"}, "frames": ["2020-0218-151547_027602_movie_t-3.jpg", "2020-0218-151547_027602_movie_t-2.jpg", "2020-0218-151547_027602_movie_t-1.jpg", "2020-0218-151547_027602_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the silver sedan approaching to your right", "environment_perception": "The scene shows a multi-lane urban roadway under an elevated expressway, with smooth pavement and moderate traffic as it nears a broad intersection. A small white car ahead in the ego lane continues straight across the zebra crossing beneath the viaduct. On the right, a silver sedan travels forward in the adjacent lane in the same direction, roughly parallel to the ego vehicle. Two pedestrians are waiting at the left crosswalk near the curb.", "hazard_reasoning": "The main concern is the silver sedan in the right lane beside the ego lane. It could move into the ego lane from the right, so its approach should be monitored closely."}
{"id": "train_09420", "split": "train", "clip_key": "2020-0204-150838_060855_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "060855"}, "frames": ["2020-0204-150838_060855_movie_t-3.jpg", "2020-0204-150838_060855_movie_t-2.jpg", "2020-0204-150838_060855_movie_t-1.jpg", "2020-0204-150838_060855_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield to merging bus", "environment_perception": "An urban two-lane roadway curves left past warehouse-like buildings and a protected sidewalk, with light to moderate traffic and only vehicles traveling in the same direction. Ahead in the right lane, a white box truck is slowing, limited by a white coach bus farther forward as it merges into that lane. The bus is entering from the left side of the road and moving into the lane ahead, so it may block or influence the ego vehicle’s path. No clear signals, signs, oncoming traffic, or other obstacles are visible.", "hazard_reasoning": "The main risk is the white coach bus merging into the lane ahead, which is causing the truck in front to slow down. This creates a lane-change merge hazard, so the driver should yield and be ready for reduced speed to keep traffic flowing safely."}
{"id": "train_09421", "split": "train", "clip_key": "2020-0221-115122_019637_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "019637"}, "frames": ["2020-0221-115122_019637_movie_t-3.jpg", "2020-0221-115122_019637_movie_t-2.jpg", "2020-0221-115122_019637_movie_t-1.jpg", "2020-0221-115122_019637_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield to merging vehicle", "environment_perception": "The scene shows a busy multi-lane urban road beneath an elevated expressway, with a guardrail along the right side and vehicles moving slowly in dense traffic. Ahead to the left, a white sedan shifts out of the left lane into the ego vehicle’s lane, squeezing into a narrow opening and limiting the ego car’s movement. A dark taxi is directly in front in the same lane, inching forward in stop-and-go traffic. On the right, a light blue hatchback is traveling beside the ego car and then pulls slightly ahead, leaving less room for lateral movement.", "hazard_reasoning": "The main hazard is the white sedan merging from the left lane into the ego lane. Because it is entering the ego vehicle’s path at close range, there is a significant collision risk unless the driver yields immediately."}
{"id": "train_09422", "split": "train", "clip_key": "titan_clip_456_000462_movie", "source": {"subset": "titan", "scenario": "clip_456", "frame": "000462"}, "frames": ["titan_clip_456_000462_movie_t-3.jpg", "titan_clip_456_000462_movie_t-2.jpg", "titan_clip_456_000462_movie_t-1.jpg", "titan_clip_456_000462_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cones ahead", "environment_perception": "The frames show an urban uphill two-way road with one lane in each direction and clear pavement. Orange cones are placed along the right edge of the ego lane, making the driving space feel temporarily constrained. A white truck is visible ahead in the opposing lane beyond the cones, proceeding slowly and remaining in its lane. On the left sidewalk, a pedestrian is standing near parked bicycles and is not entering the roadway, and a temporary sign with an upward arrow sits by the left curb.", "hazard_reasoning": "The main issue is the line of orange traffic cones on the right side, which indicates roadside work or a narrowed passage. Because they reduce usable lane width and require careful positioning, the driver should stay alert and follow the lane carefully."}
{"id": "train_09423", "split": "train", "clip_key": "2020-0131-135401_030221_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030221"}, "frames": ["2020-0131-135401_030221_movie_t-3.jpg", "2020-0131-135401_030221_movie_t-2.jpg", "2020-0131-135401_030221_movie_t-1.jpg", "2020-0131-135401_030221_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the truck", "environment_perception": "This is an urban two-way street with one lane in each direction leading into a cross intersection. There is no median, the road surface is clear, and traffic appears moderate. A white truck is approaching straight ahead in the opposing right lane and is the most prominent oncoming vehicle. A small white car follows behind it in the same opposing lane. On the right-side side street, a silver car is waiting at the corner to enter the main road, seemingly ready to merge into the ego lane when space opens. A box truck is parked or stopped along the left curb past the crosswalk, which reduces available room after the intersection.", "hazard_reasoning": "The main concern is the white truck coming toward the ego vehicle in the opposing lane. Because it is directly ahead and could interfere with the path or merge into the lane, the driver should slow and yield to reduce the chance of a collision."}
{"id": "train_09424", "split": "train", "clip_key": "2020-0221-115122_019637_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0221-115122_019637_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0221-115122_019637_movie_t-3_augB1.jpg", "2020-0221-115122_019637_movie_t-2_augB1.jpg", "2020-0221-115122_019637_movie_t-1_augB1.jpg", "2020-0221-115122_019637_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield to merging vehicle", "environment_perception": "The scene shows a busy multi-lane urban road beneath an elevated expressway, with a guardrail along the right side and smooth pavement. Traffic is congested and moving slowly in queues. Ahead-left, a white sedan is shifting from the left lane into the ego vehicle’s lane, fitting into a narrow gap and limiting the ego car’s progress. A dark taxi directly ahead in the same lane is inching forward in stop-and-go traffic. On the right, a light blue hatchback is traveling beside the ego vehicle and then pulling slightly ahead, leaving less room for maneuvering.", "hazard_reasoning": "The main hazard is the white sedan merging from the left into the ego lane. If the ego vehicle does not give way in time, the merging car could collide with it."}
{"id": "train_09425", "split": "train", "clip_key": "titan_clip_1372_000024_movie", "source": {"subset": "titan", "scenario": "clip_1372", "frame": "000024"}, "frames": ["titan_clip_1372_000024_movie_t-3.jpg", "titan_clip_1372_000024_movie_t-2.jpg", "titan_clip_1372_000024_movie_t-1.jpg", "titan_clip_1372_000024_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around cone carefully", "environment_perception": "A narrow urban street functions like a single lane through a work zone, with dry pavement and only sparse traffic. On the right side near the ego lane, one pedestrian is walking toward the camera along the curb and is close enough to affect passing space. Farther ahead on the right, another pedestrian is moving away beside the construction barriers and stays near possible lane-entry points. A small work vehicle is stopped on the right near the barricades, reducing the usable roadway. Several orange cones mark the corridor through the site, including one cone positioned on the right.", "hazard_reasoning": "The key visible hazard is the orange traffic cone on the right, which signals a construction-related obstruction in the travel path. Because it narrows the lane, the driver needs to steer around it carefully to avoid contact."}
{"id": "train_09426", "split": "train", "clip_key": "2020-0205-103411_014063_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "014063"}, "frames": ["2020-0205-103411_014063_movie_t-3.jpg", "2020-0205-103411_014063_movie_t-2.jpg", "2020-0205-103411_014063_movie_t-1.jpg", "2020-0205-103411_014063_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a busy urban roadway where the ego vehicle is traveling on a smooth multi-lane arterial, with a planted median on the right dividing opposing traffic. Traffic flow is steady. Ahead, a blue garbage truck is moving out of the ego lane into the left lane and slowing slightly as it shifts, momentarily affecting the ego car’s pace; its rear compartment is open. A silver minivan in the right adjacent lane remains alongside at a similar speed without drifting over. Oncoming cars continue past on the far side of the median, and a 50 speed limit is displayed on an overhead gantry.", "hazard_reasoning": "The main hazard is the blue truck ahead performing a lane change from the ego lane into the left lane. Because it is directly in front of the ego vehicle and slowing during the maneuver, the safer response is to keep following at a proper distance and stay alert to the truck’s movement."}
{"id": "train_09427", "split": "train", "clip_key": "2020-0210-101957_045850_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-101957_045850_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-101957_045850_movie_t-3_augB1.jpg", "2020-0210-101957_045850_movie_t-2_augB1.jpg", "2020-0210-101957_045850_movie_t-1_augB1.jpg", "2020-0210-101957_045850_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Start moving", "environment_perception": "A dry, well-marked urban arterial with two lanes in each direction and a painted median is visible, and the previously dense traffic is now moving slowly. In the ego lane ahead, a black hatchback begins rolling forward in front of the ego vehicle as the jam clears. In the adjacent same-direction lane ahead-left, a small white box truck also inches along beside the ego car. Several vehicles farther ahead continue creeping toward the next signalized intersection, while oncoming traffic on the right, including a white truck, flows steadily through.", "hazard_reasoning": "The key risk is the black hatchback ahead in the ego lane starting to move into the path of the ego vehicle as traffic loosens. This creates a lane-change/merge-style conflict, so the driver should begin moving to keep a safe gap."}
{"id": "train_09428", "split": "train", "clip_key": "2020-0204-150838_080225_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "080225"}, "frames": ["2020-0204-150838_080225_movie_t-3.jpg", "2020-0204-150838_080225_movie_t-2.jpg", "2020-0204-150838_080225_movie_t-1.jpg", "2020-0204-150838_080225_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to avoid a potential collision", "environment_perception": "The scene shows a dry, clear suburban road with two same-direction lanes and light traffic. A sound barrier runs along one side, with a guardrail on the left and a tall wall on the right. Directly ahead, a white box truck is moving out of the ego lane and toward the left lane in front of the vehicle.", "hazard_reasoning": "The main risk is the white truck’s lane change in front of the ego car. As it shifts from the current lane into the left lane, it may move into your path or reduce your safe following space. Slowing down is appropriate to keep distance and lower the chance of a collision."}
{"id": "train_09429", "split": "train", "clip_key": "2020-0131-135401_030221_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030221"}, "frames": ["2020-0131-135401_030221_movie_t-3.jpg", "2020-0131-135401_030221_movie_t-2.jpg", "2020-0131-135401_030221_movie_t-1.jpg", "2020-0131-135401_030221_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the truck", "environment_perception": "The scene shows an urban two-way street with one lane in each direction leading into a cross intersection. There is no median, the road surface is clear, and traffic appears moderate. A white truck is approaching from the opposite direction in the right lane and is the main vehicle in front. A small white car follows behind it in the same opposing lane and continues straight. On the right-side side street, a silver car is waiting at the corner to enter the main road, while a box truck is parked along the left curb beyond the crosswalk, reducing available space after the intersection.", "hazard_reasoning": "The white truck is coming directly toward the ego vehicle in the opposite lane. Because it is the closest and most relevant moving vehicle ahead, it could interfere with the path or create a conflict point, so the driver should slow and yield to reduce collision risk."}
{"id": "train_09430", "split": "train", "clip_key": "titan_clip_1372_000024_movie", "source": {"subset": "titan", "scenario": "clip_1372", "frame": "000024"}, "frames": ["titan_clip_1372_000024_movie_t-3.jpg", "titan_clip_1372_000024_movie_t-2.jpg", "titan_clip_1372_000024_movie_t-1.jpg", "titan_clip_1372_000024_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around cone carefully", "environment_perception": "A narrow urban street functions like a single lane through a work area, with dry pavement and minimal traffic. On the right beside the ego lane, one pedestrian is walking toward the camera near the curb and close to the roadway, which affects available passing space. Farther ahead on the right, another pedestrian is moving away along the sidewalk next to construction barriers and remains near possible lane entry points. A small work vehicle is parked ahead on the right by the barricades, further reducing the usable width. Several orange traffic cones mark the route through the zone, including one on the right side.", "hazard_reasoning": "The right-side orange cone is the main immediate issue. It signals a construction-related obstruction in the lane area, so the driver needs to steer around it carefully to avoid contact."}
{"id": "train_09431", "split": "train", "clip_key": "2020-0131-135401_030221_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030221"}, "frames": ["2020-0131-135401_030221_movie_t-3.jpg", "2020-0131-135401_030221_movie_t-2.jpg", "2020-0131-135401_030221_movie_t-1.jpg", "2020-0131-135401_030221_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the truck", "environment_perception": "An urban two-way street with one lane in each direction leads into a cross intersection. There is no median, the pavement is clear, and traffic appears moderate. A white truck is coming toward the ego vehicle in the opposing right lane and is the main vehicle ahead through the intersection. A small white car follows behind it in the same opposing lane and continues straight. On the right-side side street, a silver car is waiting at the corner, ready to enter the main road and potentially join the ego lane. A box truck is parked along the left curb past the crosswalk, reducing room beyond the intersection.", "hazard_reasoning": "The white truck is approaching head-on in the opposite lane, so it is the most important hazard to watch. Because it is moving toward the ego vehicle and could interfere with the path, the driver should yield to reduce the chance of a collision."}
{"id": "train_09432", "split": "train", "clip_key": "2020-0131-103016_016623_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-103016_016623_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-103016_016623_movie_t-3_augB1.jpg", "2020-0131-103016_016623_movie_t-2_augB1.jpg", "2020-0131-103016_016623_movie_t-1_augB1.jpg", "2020-0131-103016_016623_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "This is an urban multilane roadway with three same-direction lanes between midrise buildings, with clear pavement but heavy, slow-moving traffic. A gray van is directly ahead in the ego lane and has come to a stop while waiting for a safe opening to merge into the adjacent right lane, delaying the ego vehicle. In that right lane, a white van is moving forward alongside it and is occupying the space the gray van wants to enter. A sedan and a small truck are also creeping ahead in the left lane, so the overall flow remains sluggish. Overhead signals are visible, but their indication cannot be determined.", "hazard_reasoning": "The main risk is the gray van stopped in front of the ego vehicle because it is preparing to merge right. Its stationary position and intended lane change could require the ego driver to brake suddenly, so maintaining a safe gap and stopping is the appropriate response."}
{"id": "train_09433", "split": "train", "clip_key": "titan_clip_967_000510_movie", "source": {"subset": "titan", "scenario": "clip_967", "frame": "000510"}, "frames": ["titan_clip_967_000510_movie_t-3.jpg", "titan_clip_967_000510_movie_t-2.jpg", "titan_clip_967_000510_movie_t-1.jpg", "titan_clip_967_000510_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the oncoming van", "environment_perception": "The scene shows an urban residential street that is very narrow and lacks a centerline, with smooth pavement and light traffic. The ego vehicle is moving along the left side. Ahead, a black van is coming toward the ego vehicle and is partly occupying the ego lane because the road is tight, leaving limited space to pass. On the near left, a pedestrian is walking along the curb in the same direction, staying close to the edge near the ego path. A small van is parked or stopped on the left, and several bicycles are lined up near the shopfront on the right, making the passage even narrower.", "hazard_reasoning": "The main risk is the black van approaching from ahead while encroaching into the ego lane on this constricted road. Because it is already taking up part of the lane, the available clearance is reduced and the chance of conflict is higher, so the driver should proceed with caution and carefully manoeuvre around it."}
{"id": "train_09434", "split": "train", "clip_key": "2020-0214-102601_008507_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "008507"}, "frames": ["2020-0214-102601_008507_movie_t-3.jpg", "2020-0214-102601_008507_movie_t-2.jpg", "2020-0214-102601_008507_movie_t-1.jpg", "2020-0214-102601_008507_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around cones", "environment_perception": "The scene shows an urban two-way street with one lane in each direction and no median, under light traffic and a clear roadway surface. A silver hatchback ahead in the ego lane is traveling straight and leading the flow. Near the left side of the ego vehicle, a gray minivan is parked with its driver door open, while a person is crouched by the wheel. Several red traffic cones are placed along the left edge of the ego lane, reducing the available space. In the opposite lane, a white car is coming toward the camera, with more vehicles farther ahead. On the right, a cyclist and a pedestrian are on the fenced sidewalk and do not enter the road.", "hazard_reasoning": "The main concern is the row of red cones on the left side of the ego lane, which suggests a lane restriction or roadwork area. Because they narrow the drivable space, the driver should pass them cautiously to avoid contact."}
{"id": "train_09435", "split": "train", "clip_key": "2020-0210-101957_007911_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "007911"}, "frames": ["2020-0210-101957_007911_movie_t-3.jpg", "2020-0210-101957_007911_movie_t-2.jpg", "2020-0210-101957_007911_movie_t-1.jpg", "2020-0210-101957_007911_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is a two-way urban street with one lane in each direction, lined by shops and apartments and marked by a solid yellow center line on clear pavement. Traffic is fairly moderate and briefly compresses near a bus stop. In the ego lane, a green sedan ahead slows because a bus farther up is pulling out from the left curb and moving into the same lane. The bus has just departed from a stop with waiting passengers and now takes up part of the lane in front of the sedan. Meanwhile, oncoming vehicles, including a red SUV and a white wagon, continue in the opposite lane without affecting the ego vehicle. A sign on the left indicates no U-turn and no parking.", "hazard_reasoning": "The main issue is the bus merging into the ego lane ahead, which causes the green sedan in front to brake and reduces available space. This creates a lane-change merge hazard that requires the driver to slow down and keep a safe following gap."}
{"id": "train_09436", "split": "train", "clip_key": "2020-0206-101736_028112_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-101736_028112_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-101736_028112_movie_t-3_augB1.jpg", "2020-0206-101736_028112_movie_t-2_augB1.jpg", "2020-0206-101736_028112_movie_t-1_augB1.jpg", "2020-0206-101736_028112_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield to merging vehicle", "environment_perception": "The scene is an urban multi-lane road in the ego direction with clear pavement and slow-moving queued traffic. A white SUV is ahead-left, partly over the lane marking and effectively stopped as it intrudes from the left lane into the ego lane due to congestion. A white sedan is directly in front in the ego lane, creeping and then pausing, which limits forward progress. Several more vehicles are lined up farther ahead in both same-direction lanes, and there are no visible pedestrians, obstacles, or notable traffic signals affecting the lane.", "hazard_reasoning": "The main risk is the white SUV on the left that is stopped while merging into the ego lane. Because it is already encroaching into your path amid congestion, it creates an immediate merge conflict and raises the chance of a collision, so the vehicle should be yielded to."}
{"id": "train_09437", "split": "train", "clip_key": "titan_clip_967_000510_movie", "source": {"subset": "titan", "scenario": "clip_967", "frame": "000510"}, "frames": ["titan_clip_967_000510_movie_t-3.jpg", "titan_clip_967_000510_movie_t-2.jpg", "titan_clip_967_000510_movie_t-1.jpg", "titan_clip_967_000510_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the oncoming van", "environment_perception": "The scene is an urban residential street that is very narrow and lacks a centerline, with smooth pavement and little traffic. The ego vehicle is moving along the left side of the road. A black van is coming toward it and is partly using the ego lane because the roadway is constricted, which reduces the available room. On the left near the curb, a pedestrian is walking in the same direction and remains close to the edge beside the ego path. A small van is parked on the left, and multiple bicycles are lined up near the shopfront on the right, making the passage even tighter.", "hazard_reasoning": "The main hazard is the black van approaching head-on while partly intruding into the ego lane on this narrow street. Because it is encroaching into the vehicle's path, the chance of a side or head-on conflict is raised, so the driver should carefully manoeuvre around it."}
{"id": "train_09438", "split": "train", "clip_key": "2020-0214-102601_008507_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "008507"}, "frames": ["2020-0214-102601_008507_movie_t-3.jpg", "2020-0214-102601_008507_movie_t-2.jpg", "2020-0214-102601_008507_movie_t-1.jpg", "2020-0214-102601_008507_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around cones", "environment_perception": "The scene shows an urban two-way street with one lane in each direction and no central divider, with a clear roadway and light traffic. A silver hatchback ahead in the ego lane is moving straight and appears to be leading the flow. Near the left side beside the ego vehicle, a gray minivan is parked with its driver door open, and a person is crouched by the wheel. Several red traffic cones are placed along the left edge of the ego lane, reducing the available space. In the opposing lane, a white car is coming toward the camera, while more vehicles are visible farther ahead. On the right, a cyclist and a pedestrian are traveling along the fenced sidewalk without entering the road.", "hazard_reasoning": "The main concern is the line of red cones on the left side of the ego lane. They suggest a possible work or lane restriction area, so the driver needs to pass carefully and keep clear of them to avoid contact."}
{"id": "train_09439", "split": "train", "clip_key": "2020-0210-155354_025613_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-155354_025613_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-155354_025613_movie_t-3_augB1.jpg", "2020-0210-155354_025613_movie_t-2_augB1.jpg", "2020-0210-155354_025613_movie_t-1_augB1.jpg", "2020-0210-155354_025613_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "The ego vehicle is traveling on a smooth urban road with two lanes moving in the same direction and no median, with moderate traffic ahead. A black mini MPV is in front in the left lane and is maintaining its speed, which slows the ego vehicle's progress. On the right, a yellow dump truck is slightly ahead, its left turn signal is on, and it starts edging left as if to merge into the ego lane under the traffic conditions. Several vehicles are lined up farther ahead, keeping the flow slow. A side street and crosswalk are visible on the left, but they do not influence the current lane.", "hazard_reasoning": "The main risk is the yellow truck merging from the right lane into the left lane directly ahead of the ego vehicle. Because it is signaling and drifting left, it could cut in front and create a collision risk. The ego vehicle should yield and wait for the truck to complete its lane change."}
{"id": "train_09440", "split": "train", "clip_key": "2020-0213-143552_009682_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009682"}, "frames": ["2020-0213-143552_009682_movie_t-3.jpg", "2020-0213-143552_009682_movie_t-2.jpg", "2020-0213-143552_009682_movie_t-1.jpg", "2020-0213-143552_009682_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is an urban two-way street with one lane in each direction, bordered by mid-rise buildings. The road surface looks dry and clear, while traffic is only light to moderate. Cones and a small standing sign are placed along the centerline, making the roadway slightly narrower. A black sedan ahead in the ego lane moves rightward to merge into the right lane beyond the cones, and it becomes the main vehicle influencing the ego car’s pace. An oncoming silver car passes on the right within its own lane without edging toward the center. A white truck is visible farther ahead in the oncoming lane, approaching normally and staying clear of the coned-off area.", "hazard_reasoning": "The key hazard is the black sedan shifting from the ego lane into the right lane. This merge appears related to congestion ahead, and it could cut in front of the ego vehicle if not anticipated. Slowing down helps keep a safe gap and reduces the chance of a collision."}
{"id": "train_09441", "split": "train", "clip_key": "titan_clip_1372_000078_movie", "source": {"subset": "titan", "scenario": "clip_1372", "frame": "000078"}, "frames": ["titan_clip_1372_000078_movie_t-3.jpg", "titan_clip_1372_000078_movie_t-2.jpg", "titan_clip_1372_000078_movie_t-1.jpg", "titan_clip_1372_000078_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "The scene shows a narrow urban street between mid-rise buildings, with dry pavement and only light traffic. A red cone is placed on the right side of the ego lane just ahead, while more cones and barriers run along the right curb and reduce the available lane width. In the right foreground, a man is moving toward the camera partly in the roadway, leaving less room beside the cones. Near the center ahead, another pedestrian is crossing from the left toward the coned-off area and could move into the vehicle’s path. Farther up on the right, one person is walking away along the curb inside the restricted section and does not interfere with the lane.", "hazard_reasoning": "The main hazard is the red traffic cone positioned on the right side of the ego lane ahead of the car. It indicates a construction area intruding into the driving lane, so the vehicle should pass it cautiously and stay clear of the narrowed section."}
{"id": "train_09442", "split": "train", "clip_key": "titan_clip_967_000510_movie", "source": {"subset": "titan", "scenario": "clip_967", "frame": "000510"}, "frames": ["titan_clip_967_000510_movie_t-3.jpg", "titan_clip_967_000510_movie_t-2.jpg", "titan_clip_967_000510_movie_t-1.jpg", "titan_clip_967_000510_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the oncoming van", "environment_perception": "A tight urban neighborhood street with no centerline stretches ahead, with smooth pavement and little traffic. The ego vehicle is traveling along the left side of the road. A black van is approaching head-on and is partly taking up the ego lane as it squeezes through the narrow roadway, briefly reducing available space. On the near left, a pedestrian is walking along the curb in the same direction, staying close to the edge and near the ego vehicle's path. A small van is parked on the left, and several bicycles line the shopfront on the right, making the passage even narrower.", "hazard_reasoning": "The main hazard is the black van coming toward the ego vehicle while encroaching into its lane on this constricted street. Because it is moving oncoming in limited space, the risk of a side conflict is increased, so the driver should carefully manoeuvre around it."}
{"id": "train_09443", "split": "train", "clip_key": "2020-0127-132751_093759_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "093759"}, "frames": ["2020-0127-132751_093759_movie_t-3.jpg", "2020-0127-132751_093759_movie_t-2.jpg", "2020-0127-132751_093759_movie_t-1.jpg", "2020-0127-132751_093759_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "The scene shows an urban two-way roadway with one lane in each direction, bending gently to the right. A sidewalk runs along the left beside a fenced construction area, while buildings line the right side; the road surface is dry and there is no median, with traffic coming toward the ego vehicle. A black bus is ahead in the opposite lane, moving toward the camera and tracking the curve while remaining in its lane. Additional oncoming vehicles, including a white van and a scooter, are also approaching in that same lane, leaving limited clearance near the centerline. Several pedestrians are visible on the left sidewalk, but they stay off the road.", "hazard_reasoning": "The main risk is the black bus approaching head-on in the opposing lane. Because it is oncoming traffic, the driver should reduce speed and keep a safe gap, staying ready to stop if needed."}
{"id": "train_09444", "split": "train", "clip_key": "2020-0220-151845_048269_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "048269"}, "frames": ["2020-0220-151845_048269_movie_t-3.jpg", "2020-0220-151845_048269_movie_t-2.jpg", "2020-0220-151845_048269_movie_t-1.jpg", "2020-0220-151845_048269_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene shows an urban three-lane roadway beneath an elevated expressway, with smooth pavement marked by a central crack and dense, slow-moving traffic. Barricades and a small construction zone run along the left shoulder, while blue overhead direction signs cross above the lanes. A tarp-covered flatbed truck in the ego lane is directly ahead and moving slowly. At the same time, a silver scooter shifts from the left lane toward the ego lane near the truck, briefly edging into the ego vehicle’s path. Vehicles in the adjacent lanes are also queued and crawling, leaving little room to maneuver.", "hazard_reasoning": "The main hazard is the silver scooter merging from the left lane into the ego lane in front of the vehicle. Because traffic is congested, the scooter enters unexpectedly and creates a risk of conflict in the ego path. Slowing down is the safest response to avoid a collision and adapt to the changing traffic flow."}
{"id": "train_09445", "split": "train", "clip_key": "2020-0203-154554_030227_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "030227"}, "frames": ["2020-0203-154554_030227_movie_t-3.jpg", "2020-0203-154554_030227_movie_t-2.jpg", "2020-0203-154554_030227_movie_t-1.jpg", "2020-0203-154554_030227_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is an urban multilane roadway beneath an elevated expressway, with smooth pavement and moderate same-direction traffic. A silver van ahead-left is moving out of the left lane and merging into the ego lane directly in front, which shortens the gap. A small flatbed truck is farther ahead in the ego lane and is traveling more slowly, affecting the lane’s pace. On the right, a white boxy van continues straight in the neighboring lane without moving toward the ego vehicle. Blue overhead direction signs are present above.", "hazard_reasoning": "The main risk is the silver van merging from the left into the ego lane. Because it is entering directly ahead, it can interfere with the ego path and force a speed reduction to maintain safety, so the driver should slow down."}
{"id": "train_09446", "split": "train", "clip_key": "titan_clip_1372_000078_movie", "source": {"subset": "titan", "scenario": "clip_1372", "frame": "000078"}, "frames": ["titan_clip_1372_000078_movie_t-3.jpg", "titan_clip_1372_000078_movie_t-2.jpg", "titan_clip_1372_000078_movie_t-1.jpg", "titan_clip_1372_000078_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "The scene shows a narrow single-lane city street bordered by mid-rise buildings, with a dry, undamaged road surface and little traffic. A red cone is placed on the right side of the ego lane just ahead, and more cones with barriers run along the right curb, leaving less room to drive. In the right foreground, a man is walking toward the camera partly in the roadway, further tightening the space beside the cones. Ahead near the center, another pedestrian is crossing from the left toward the coned-off area and could enter the vehicle’s path. A person farther ahead on the right is walking away within the restricted section and does not interfere with travel.", "hazard_reasoning": "The main issue is the red cone positioned on the right side of the lane ahead of the ego vehicle. It indicates a construction area intruding into the driving space, so the driver needs to steer around it cautiously to avoid trouble."}
{"id": "train_09447", "split": "train", "clip_key": "2020-0207-101955_088035_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0207-101955_088035_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0207-101955_088035_movie_t-3_augB1.jpg", "2020-0207-101955_088035_movie_t-2_augB1.jpg", "2020-0207-101955_088035_movie_t-1_augB1.jpg", "2020-0207-101955_088035_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of truck changing lanes", "environment_perception": "The scene shows a multilane urban roadway beneath an elevated expressway, with straight lanes, smooth pavement, and moderate traffic moving slowly toward a signal-controlled intersection. A blue flatbed truck ahead in the ego lane is shifting left into the neighboring lane, leaving more open space in front of the ego vehicle. A tall white box truck ahead-right continues forward at low speed, limiting progress and partly blocking the view ahead. On the far left, a long flatbed carrying construction equipment moves slowly in parallel near the ego vehicle.", "hazard_reasoning": "The main risk is the blue truck departing the ego lane and merging left. Because it is crossing laterally near the ego vehicle’s path, it could create a collision risk if the movement develops unexpectedly, so this is the critical hazard to monitor."}
{"id": "train_09448", "split": "train", "clip_key": "2020-0127-132751_063423_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "063423"}, "frames": ["2020-0127-132751_063423_movie_t-3.jpg", "2020-0127-132751_063423_movie_t-2.jpg", "2020-0127-132751_063423_movie_t-1.jpg", "2020-0127-132751_063423_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the semi truck", "environment_perception": "A gently rising urban multi-lane road has smooth pavement and a painted divider on the right, with light traffic moving steadily. A white semi truck is traveling in the left adjacent lane beside the ego vehicle, mostly matching speed and sometimes pulling slightly ahead, so the two vehicles remain parallel. A white sedan in the ego lane continues straight and gradually widens the distance ahead. Farther up the road, another same-direction truck is also climbing uphill and may influence traffic flow. An overhead blue sign on the left displays a straight-ahead arrow with a truck symbol, and sidewalks are present on both sides with no oncoming vehicles visible.", "hazard_reasoning": "The main concern is the white semi truck beside the ego vehicle in the left lane. Because it is traveling alongside and edging forward at times, it could merge into the ego lane without much warning, so the driver should stay alert to its position."}
{"id": "train_09449", "split": "train", "clip_key": "2020-0127-132751_093759_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "093759"}, "frames": ["2020-0127-132751_093759_movie_t-3.jpg", "2020-0127-132751_093759_movie_t-2.jpg", "2020-0127-132751_093759_movie_t-1.jpg", "2020-0127-132751_093759_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "A dry urban two-way roadway with one lane in each direction bends gently to the right, with a sidewalk along the left curb and buildings lining the right side; there is no median and oncoming traffic is moderate. A black bus is approaching in the opposing lane ahead, tracking along the curve and remaining within its lane as it moves toward the ego vehicle. A white van and a scooter are also coming straight toward the car in the same oncoming lane, leaving little room near the centerline. Several pedestrians are visible on the left sidewalk beside a fenced construction zone, but they stay off the road.", "hazard_reasoning": "The main risk is the oncoming black bus, which is advancing toward the ego vehicle in the right lane. This calls for slowing down and keeping a safe gap, with readiness for an emergency stop if needed in this oncoming-traffic situation."}
{"id": "train_09450", "split": "train", "clip_key": "2020-0207-101955_086031_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "086031"}, "frames": ["2020-0207-101955_086031_movie_t-3.jpg", "2020-0207-101955_086031_movie_t-2.jpg", "2020-0207-101955_086031_movie_t-1.jpg", "2020-0207-101955_086031_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Accelerate to keep safe following distance", "environment_perception": "A light-traffic urban expressway with two lanes for the same direction bends to the right, bordered by tall sound barriers and an overhead viaduct. In the ego lane, a blue truck ahead is moving leftward into the adjacent lane, using the open space there and completing a smooth merge. Another cargo truck is farther ahead in the left lane, continuing steadily in front of the ego vehicle. Overhead direction signs can be seen in the distance.", "hazard_reasoning": "The key event is the blue truck changing from the ego lane into the left lane directly ahead. Even though the maneuver appears smooth, it still narrows the available space in front of the ego car and creates a potential conflict point, so maintaining a safe gap is important."}
{"id": "train_09451", "split": "train", "clip_key": "2020-0228-150133_021630_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "021630"}, "frames": ["2020-0228-150133_021630_movie_t-3.jpg", "2020-0228-150133_021630_movie_t-2.jpg", "2020-0228-150133_021630_movie_t-1.jpg", "2020-0228-150133_021630_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "The scene shows an urban two-way road leading up to a railway level crossing with dry, smooth pavement. The ego vehicle is waiting in the left lane while traffic is stopped. A boom barrier is lowered directly ahead, and the railway warning signals are active, keeping both directions of traffic from proceeding. Beyond the tracks, oncoming vehicles, including a silver van, are lined up facing the ego lane because the crossing is closed. Near the right side of the gate, a bicyclist is stationary beside the road. On the left approach, a pedestrian with a bicycle is also standing still by the lowered barrier.", "hazard_reasoning": "The lowered boom barrier blocks the way in front of the ego vehicle, so the vehicle must remain stopped. Entering the crossing now would be unsafe and could lead to a collision with the tram."}
{"id": "train_09452", "split": "train", "clip_key": "2020-0228-150133_011447_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "011447"}, "frames": ["2020-0228-150133_011447_movie_t-3.jpg", "2020-0228-150133_011447_movie_t-2.jpg", "2020-0228-150133_011447_movie_t-1.jpg", "2020-0228-150133_011447_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of truck merging left", "environment_perception": "The scene shows an urban two-way roadway with shops and mid-rise buildings, a solid yellow centerline, and clear dry pavement as the ego vehicle approaches a signalized intersection. A white box truck ahead in the ego lane is drifting into the left lane toward the curb side, which slows the ego vehicle’s progress. In the opposite lane, a white oncoming truck stays to the right of the centerline and continues straight. Another small truck is visible farther ahead near the curb on the far side. Pedestrians are present on both sidewalks, including one on the right with a dog, but none step into the road. Traffic lights are visible overhead.", "hazard_reasoning": "The main concern is the white truck directly ahead shifting left. Its lane change could move into the ego vehicle’s path and force an abrupt response, so it is the most important hazard to monitor."}
{"id": "train_09453", "split": "train", "clip_key": "2020-0228-150133_021630_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "021630"}, "frames": ["2020-0228-150133_021630_movie_t-3.jpg", "2020-0228-150133_021630_movie_t-2.jpg", "2020-0228-150133_021630_movie_t-1.jpg", "2020-0228-150133_021630_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-way road leads into a railway level crossing with clear, dry pavement, and the ego vehicle is stopped in the left lane while traffic remains blocked. A lowered boom barrier stands directly ahead of the car, with railway warning lights active, holding back vehicles in both directions. Beyond the tracks, several oncoming vehicles, including a silver van, are queued facing the ego lane because the crossing is closed. To the right of the gate, a bicyclist is waiting still beside the road. On the left side of the approach, a pedestrian with a bicycle is also stationary near the lowered barrier.", "hazard_reasoning": "The boom barrier is down in front of the ego vehicle, so the crossing must not be entered. The safest action is to stop and wait, since proceeding could put the vehicle into the closed crossing and risk a collision with the tram."}
{"id": "train_09454", "split": "train", "clip_key": "titan_clip_518_000588_movie", "source": {"subset": "titan", "scenario": "clip_518", "frame": "000588"}, "frames": ["titan_clip_518_000588_movie_t-3.jpg", "titan_clip_518_000588_movie_t-2.jpg", "titan_clip_518_000588_movie_t-1.jpg", "titan_clip_518_000588_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging scooter", "environment_perception": "The scene shows a narrow two-way urban street with one lane in each direction, lined by low-rise buildings. The road surface is patched and slightly rough, and overall traffic is light. A white scooter ahead has just come out of a side street, turning right and merging into the ego lane while moving away, likely becoming the lead vehicle momentarily. Near the right curb by the junction, a cyclist is coming toward the camera and drifting diagonally toward the middle of the road, briefly edging into the ego lane. On the left sidewalk, pedestrians with umbrellas remain off the road but close to the curb. A blue left-pointing arrow sign is visible on the left near the corner.", "hazard_reasoning": "The main hazard is the white scooter merging into the ego lane after its right turn from the side street. This lane change puts the scooter directly ahead of the ego vehicle, so the driver needs to stay alert and be ready to react to avoid a conflict or collision."}
{"id": "train_09455", "split": "train", "clip_key": "2020-0221-115122_031251_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "031251"}, "frames": ["2020-0221-115122_031251_movie_t-3.jpg", "2020-0221-115122_031251_movie_t-2.jpg", "2020-0221-115122_031251_movie_t-1.jpg", "2020-0221-115122_031251_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be cautious of merging vehicle ahead.", "environment_perception": "A busy urban multi-lane road passes beneath an elevated structure, with a guardrail along the right side and clear dry pavement. Traffic is congested and moving slowly in the same direction. A black sedan ahead shifts from the left lane into the ego lane and ends up directly in front, limiting the ego vehicle’s forward space. Farther ahead, a white compact car remains in the ego lane at low speed within the queue. Nearby left-lane vehicles continue creeping forward beside the ego car without any additional merging, and no special signals or other obstacles are visible.", "hazard_reasoning": "The main concern is the black sedan that has merged into the ego lane from the left. Because it cuts in close ahead, it can reduce available space and create a need for sudden braking or evasive steering. This makes the merging vehicle the most critical hazard, and the driver should watch for further lane changes ahead."}
{"id": "train_09456", "split": "train", "clip_key": "2020-0205-152530_040005_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "040005"}, "frames": ["2020-0205-152530_040005_movie_t-3.jpg", "2020-0205-152530_040005_movie_t-2.jpg", "2020-0205-152530_040005_movie_t-1.jpg", "2020-0205-152530_040005_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a multi-lane urban road with a painted median separating opposing traffic. The roadway is clear and traffic is moving steadily. A black hatchback ahead of the ego vehicle shifts from the ego lane into the adjacent right lane, moving across the front and briefly affecting the car's pace. A white van remains farther ahead in the same lane, traveling straight with normal spacing. To the right, a bus and several oncoming cars stay on the far side of the median and do not interact with the ego lane.", "hazard_reasoning": "The key hazard is the black hatchback changing lanes in front of the ego vehicle from the current lane into the right lane. Because it crosses the ego path, the driver should keep following cautiously and preserve distance to reduce the chance of a side conflict during the maneuver."}
{"id": "train_09457", "split": "train", "clip_key": "2020-0127-132751_093759_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "093759"}, "frames": ["2020-0127-132751_093759_movie_t-3.jpg", "2020-0127-132751_093759_movie_t-2.jpg", "2020-0127-132751_093759_movie_t-1.jpg", "2020-0127-132751_093759_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "This is an urban two-way street with one lane in each direction, bending slightly to the right. There is a sidewalk along the left curb and buildings line the right side; the road surface looks dry and there is no center median. Oncoming traffic is moderate. A black bus is approaching in the opposite lane as the ego vehicle follows the curve, remaining within its lane and moving past the ego path. A white van and a scooter are also coming toward the ego vehicle in that same oncoming lane and continuing straight, which leaves limited room near the centerline. Several pedestrians are visible on the left sidewalk beside a fenced construction area, but they stay off the road.", "hazard_reasoning": "The main hazard is the black bus coming toward the ego vehicle in the opposite lane. This calls for slowing down to keep a safe gap and being ready to stop if needed in this oncoming-vehicle situation."}
{"id": "train_09458", "split": "train", "clip_key": "2020-0227-104226_054601_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054601"}, "frames": ["2020-0227-104226_054601_movie_t-3.jpg", "2020-0227-104226_054601_movie_t-2.jpg", "2020-0227-104226_054601_movie_t-1.jpg", "2020-0227-104226_054601_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the black SUV", "environment_perception": "The scene shows an urban two-way road with one lane in each direction, a smooth surface, and no center divider. The ego vehicle is nearing a zebra crossing under overhead traffic lights. A black SUV in the opposing right lane is coming toward us near the centerline and continues straight past our path. A silver minivan ahead in our lane, just beyond the crosswalk, is moving slowly along the left side and slightly limiting our progress. Another car is visible farther ahead behind the SUV in the opposite lane, staying in its lane. The pedestrian signal on the left shows a walk indication.", "hazard_reasoning": "The main risk is the black SUV approaching head-on in the right lane toward the ego vehicle. It requires yielding to reduce the chance of a collision with the oncoming vehicle."}
{"id": "train_09459", "split": "train", "clip_key": "titan_clip_359_000552_movie", "source": {"subset": "titan", "scenario": "clip_359", "frame": "000552"}, "frames": ["titan_clip_359_000552_movie_t-3.jpg", "titan_clip_359_000552_movie_t-2.jpg", "titan_clip_359_000552_movie_t-1.jpg", "titan_clip_359_000552_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "The scene shows an urban shopping street with a single narrow shared lane made of block stones and no center divider, with light, slow traffic. A black hatchback ahead in the ego lane moves steadily along the middle, limiting the ego vehicle’s speed. Pedestrians are present along both curbs; one on the right side is walking near the lane close to the ego path. On the right within the ego lane, a red traffic cone sits beside parked bicycles, and more cones and signboards on both sides make the roadway narrower.", "hazard_reasoning": "The main hazard is the red cone positioned on the right side of the driving lane, which is there to keep vehicles away from the parked bikes behind it. Because it intrudes into the ego lane, the driver needs to steer around it to avoid contact with the parked bicycles."}
{"id": "train_09460", "split": "train", "clip_key": "2020-0204-150838_005637_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "005637"}, "frames": ["2020-0204-150838_005637_movie_t-3.jpg", "2020-0204-150838_005637_movie_t-2.jpg", "2020-0204-150838_005637_movie_t-1.jpg", "2020-0204-150838_005637_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the sedan's lane change", "environment_perception": "This is an urban roadway with two lanes traveling in the same direction on the left and opposing traffic on the right, separated by a painted diagonal median. The pavement is dry and somewhat worn, and the traffic appears to be moving steadily. A brown sedan ahead and slightly left is shifting from the left lane into the right lane directly in front of the ego vehicle. Farther ahead in the right lane, a white van continues forward at a constant speed. On the opposite side, a black taxi is coming toward the camera but stays within the separated oncoming lanes.", "hazard_reasoning": "The main concern is the brown sedan merging from the left lane into the right lane ahead of the ego car. Since it is changing lanes into the vehicle’s path, the driver should anticipate the maneuver and keep a safe following distance to avoid conflict."}
{"id": "train_09461", "split": "train", "clip_key": "2020-0217-110854_067094_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "067094"}, "frames": ["2020-0217-110854_067094_movie_t-3.jpg", "2020-0217-110854_067094_movie_t-2.jpg", "2020-0217-110854_067094_movie_t-1.jpg", "2020-0217-110854_067094_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "be cautious of truck cutting in ahead", "environment_perception": "The scene shows an urban two-way boulevard with buildings and bare trees along the sides, with two lanes moving in the same direction on the left and opposing traffic on the right, divided by painted medians. The road surface is clear and traffic is moderate. A white mini truck ahead on the left is moving inward from the left lane into the ego lane, narrowing the space in front of the vehicle. A beige hatchback directly ahead continues straight in the ego lane and is now the immediate lead vehicle. To the near left, a large tarp-covered truck is traveling slightly ahead by the curb and partly obstructs the view while staying alongside. Far-right oncoming vehicles remain in their lanes and do not affect the ego vehicle. A wide hatched marking also separates the ego lane from the right side.", "hazard_reasoning": "The main hazard is the white truck merging into the ego lane from the left. This cut-in creates a sudden change in the available gap and could require abrupt braking or steering, so the driver should be prepared and keep a safe following distance."}
{"id": "train_09462", "split": "train", "clip_key": "2020-0227-104226_054601_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054601"}, "frames": ["2020-0227-104226_054601_movie_t-3.jpg", "2020-0227-104226_054601_movie_t-2.jpg", "2020-0227-104226_054601_movie_t-1.jpg", "2020-0227-104226_054601_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the black SUV", "environment_perception": "The scene shows a two-way urban road with one lane in each direction, flat pavement, and no center divider. The ego vehicle is nearing a zebra crossing under overhead signals. A black SUV in the opposing lane is moving straight toward us near the center line, and a silver minivan ahead in our lane is creeping along just past the crosswalk, slightly limiting forward progress. Another car is visible farther ahead behind the SUV, also staying in its lane. On the left, the pedestrian signal shows a walk indication.", "hazard_reasoning": "The main concern is the black SUV approaching head-on in the opposite lane. Since it is moving directly toward the ego vehicle, the safe response is to yield and maintain caution to prevent a possible collision."}
{"id": "train_09463", "split": "train", "clip_key": "titan_clip_359_000552_movie", "source": {"subset": "titan", "scenario": "clip_359", "frame": "000552"}, "frames": ["titan_clip_359_000552_movie_t-3.jpg", "titan_clip_359_000552_movie_t-2.jpg", "titan_clip_359_000552_movie_t-1.jpg", "titan_clip_359_000552_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "This is a narrow urban shopping street with block-stone paving and no center divider, with light, slow-moving traffic. A black hatchback ahead stays near the middle of the lane and limits the ego vehicle’s pace. Pedestrians are present along both curbs; one person at the right edge is walking close to the lane near the ego path. On the right side, a red traffic cone sits within the ego lane beside parked bicycles, and more cones plus signboards along both sides make the roadway feel tighter.", "hazard_reasoning": "The main hazard is the red traffic cone positioned in the ego lane on the right. It marks off the area around the parked bicycles and occupies part of the drivable space, so the driver needs to steer around it to avoid contact with the bikes."}
{"id": "train_09464", "split": "train", "clip_key": "2020-0205-152530_060433_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "060433"}, "frames": ["2020-0205-152530_060433_movie_t-3.jpg", "2020-0205-152530_060433_movie_t-2.jpg", "2020-0205-152530_060433_movie_t-1.jpg", "2020-0205-152530_060433_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of merging truck", "environment_perception": "This is an urban frontage road running under an elevated expressway, with the ego vehicle traveling in a single left-side lane beside a faster multi-lane road on the right, divided by a chevron gore and flexible posts; the surface is dry and traffic is light to moderate. A blue truck ahead in the ego lane starts moving right to enter the main roadway, briefly affecting the ego vehicle’s progress as it passes through the opening. A white van in the right lanes remains slightly ahead and continues straight at a steady pace, defining the gap the truck is trying to use.", "hazard_reasoning": "The blue truck ahead is shifting to the right lane and could move unpredictably during the merge. This creates a lane-change merge hazard, so the driver should watch the truck closely and be prepared for its movement."}
{"id": "train_09465", "split": "train", "clip_key": "2020-0218-103119_006720_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0218-103119_006720_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0218-103119_006720_movie_t-3_augB1.jpg", "2020-0218-103119_006720_movie_t-2_augB1.jpg", "2020-0218-103119_006720_movie_t-1_augB1.jpg", "2020-0218-103119_006720_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "A narrow urban residential road is visible, with a single lane in each direction, no median, and clear pavement. The ego vehicle is moving in the left lane behind a green sedan traveling the same way; that sedan slows and shifts toward the center to go around a parked vehicle in the ego lane, which affects the ego car’s speed. The opposite lane appears free of oncoming traffic. A white truck is parked close to the right curb, and bicycles plus other parked items along the left side make the roadway feel even tighter.", "hazard_reasoning": "The green sedan is maneuvering around a parked vehicle in the ego lane, creating an unexpected merge/lane-change situation ahead. Because this action directly controls the space in front of the ego vehicle, the safest response is to stay behind it and keep a proper following distance."}
{"id": "train_09466", "split": "train", "clip_key": "2020-0227-104226_054601_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054601"}, "frames": ["2020-0227-104226_054601_movie_t-3.jpg", "2020-0227-104226_054601_movie_t-2.jpg", "2020-0227-104226_054601_movie_t-1.jpg", "2020-0227-104226_054601_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the black SUV", "environment_perception": "The scene shows a two-way urban road with one lane in each direction, a smooth surface, and no divider, while the ego vehicle approaches a zebra crossing under overhead traffic signals. A black SUV is coming toward us in the opposite lane near the center line, traveling straight and passing along our path. Ahead in the ego lane, a silver minivan has just beyond the crosswalk and is moving slowly along the left side, slightly limiting our forward progress. Another vehicle is visible farther ahead behind the SUV in the opposing lane, staying in its lane. The left-side pedestrian signal shows the walk icon.", "hazard_reasoning": "The main risk is the black SUV approaching head-on in the opposing lane. The ego vehicle should yield to reduce the chance of a collision with this oncoming vehicle."}
{"id": "train_09467", "split": "train", "clip_key": "titan_clip_1193_000594_movie", "source": {"subset": "titan", "scenario": "clip_1193", "frame": "000594"}, "frames": ["titan_clip_1193_000594_movie_t-3.jpg", "titan_clip_1193_000594_movie_t-2.jpg", "titan_clip_1193_000594_movie_t-1.jpg", "titan_clip_1193_000594_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "This is a narrow urban back street bordered by tall buildings, functioning like a single-lane road with smooth pavement and no center divider, and there is little to no moving traffic. Near the right edge beside the ego vehicle, a man is walking toward it along the curb and slightly intrudes into the lane. Another pedestrian is farther ahead near the center-left, moving away and slightly limiting the available space. On the left side ahead of the car, red traffic cones line the curb and narrow the roadway, while green cones, a parked bicycle, and a small barrier are visible on the right and farther ahead.", "hazard_reasoning": "The main hazard is the red traffic cone positioned on the left side of the lane ahead of the ego car. It partially blocks the driving path, so the vehicle needs to pass it cautiously to avoid hitting it."}
{"id": "train_09468", "split": "train", "clip_key": "2020-0206-142535_046733_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "046733"}, "frames": ["2020-0206-142535_046733_movie_t-3.jpg", "2020-0206-142535_046733_movie_t-2.jpg", "2020-0206-142535_046733_movie_t-1.jpg", "2020-0206-142535_046733_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows a multi-lane city road bordered by tall buildings, with smooth pavement and steady traffic moving in the same direction. The ego vehicle is behind a gray sedan in the left lane. A white compact car from the right lane moves into the lane ahead of that sedan, causing the sedan to slow. Parked taxis line the left curb in a pickup area, while a white box truck continues ahead in the same direction.", "hazard_reasoning": "The main risk is the white car merging in front of the gray sedan, which forces the sedan to reduce speed in the ego vehicle’s path. This creates a lane-change merge hazard, so the driver should ease off and keep enough following distance to avoid a rear-end conflict."}
{"id": "train_09469", "split": "train", "clip_key": "titan_clip_1214_000192_movie", "source": {"subset": "titan", "scenario": "clip_1214", "frame": "000192"}, "frames": ["titan_clip_1214_000192_movie_t-3.jpg", "titan_clip_1214_000192_movie_t-2.jpg", "titan_clip_1214_000192_movie_t-1.jpg", "titan_clip_1214_000192_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "The scene shows a narrow urban two-way street without a center divider or lane marking, with smooth pavement and sparse traffic. A black van ahead on the right is traveling along the middle of the roadway toward the ego vehicle, taking up the shared space and limiting room to continue. On the right side near the buildings, two pedestrians are visible walking and pausing close to the van and close to the edge of the travel lane. There is also a blue pedestrian-zone sign with a 7:30-8:30 restriction at the corner, road markings associated with a school zone, and a building corner that makes the right turn partly obscured.", "hazard_reasoning": "The main hazard is the black van coming toward the ego car while positioned in the center of the narrow road. Since it is directly oncoming and leaving little clearance, the situation reduces available reaction time and requires careful maneuvering to avoid a collision."}
{"id": "train_09470", "split": "train", "clip_key": "titan_clip_1214_000192_movie", "source": {"subset": "titan", "scenario": "clip_1214", "frame": "000192"}, "frames": ["titan_clip_1214_000192_movie_t-3.jpg", "titan_clip_1214_000192_movie_t-2.jpg", "titan_clip_1214_000192_movie_t-1.jpg", "titan_clip_1214_000192_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "In a narrow urban side street with no center marking or divider, the roadway is clear and traffic is sparse. A black van ahead on the right is positioned near the center of the lane and is moving toward the ego vehicle, leaving limited room to continue. Two pedestrians along the right side by the buildings are walking and pausing close to the van and near the travel path. A blue pedestrian-zone sign with a 7:30-8:30 restriction is visible at the corner, road markings suggest a school-zone area, and a building corner makes the right turn partially obstructed.", "hazard_reasoning": "The main threat is the black van approaching head-on in the middle of the road. Its centered position and direct movement toward the ego car reduce available reaction time, so the driver should slow and steer carefully to avoid a collision."}
{"id": "train_09471", "split": "train", "clip_key": "2020-0203-114632_028861_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "028861"}, "frames": ["2020-0203-114632_028861_movie_t-3.jpg", "2020-0203-114632_028861_movie_t-2.jpg", "2020-0203-114632_028861_movie_t-1.jpg", "2020-0203-114632_028861_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to merging black van", "environment_perception": "This is a city arterial with two lanes heading the ego direction and oncoming traffic beyond the center divide, passing midrise buildings. The road surface looks dry and clear, with moderate traffic. A short line of flexible bollards separates a narrow lane on the right from the main through lanes. Ahead, a black van shifts from the left lane into the ego lane and ends up directly in front of the camera car, slowing its progress. Farther ahead on the right, a white car keeps moving straight in the lane past the bollards and does not merge. Two pedestrians are visible near the left curb by the crosswalk, staying on the sidewalk. Blue overhead guide signs are present, and the ego lane itself is unobstructed.", "hazard_reasoning": "The main concern is the black van merging from the left lane into the ego lane ahead of the car. Because it moves into the ego vehicle's path, it can force the driver to slow down or yield to avoid contact. This makes the van the single most relevant hazard."}
{"id": "train_09472", "split": "train", "clip_key": "titan_clip_381_000216_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_381_000216_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_381_000216_movie_t-3_augB1.jpg", "titan_clip_381_000216_movie_t-2_augB1.jpg", "titan_clip_381_000216_movie_t-1_augB1.jpg", "titan_clip_381_000216_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "The scene shows a narrow two-way urban street paved with interlocking bricks, with slow traffic and no center divider. A white van on the left is pulling out from the curb into the ego lane and edging toward the vehicle, reducing the available passing space. In the distance, a cyclist continues straight ahead in the middle of the lane at low speed. Several pedestrians are gathered near a dark van by the left curb, and parked cars on the left plus cones near storefronts on the right make the road feel cramped.", "hazard_reasoning": "The main threat is the white van entering from the left and merging into the ego vehicle’s lane while moving toward it. Because it is encroaching into the lane directly ahead/left of the ego car, there is a high risk of conflict, so the driver should respond cautiously to avoid a collision."}
{"id": "train_09473", "split": "train", "clip_key": "2020-0217-110854_067094_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0217-110854_067094_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0217-110854_067094_movie_t-3_augB1.jpg", "2020-0217-110854_067094_movie_t-2_augB1.jpg", "2020-0217-110854_067094_movie_t-1_augB1.jpg", "2020-0217-110854_067094_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "be cautious of truck cutting in ahead", "environment_perception": "This is an urban two-way boulevard with buildings and bare trees along the sides. Two lanes run in the same direction on the left, while opposing traffic is on the right, with painted medians dividing the roadway; the surface is smooth and traffic appears moderate. A white mini truck ahead-left is moving out of the left lane and into the ego lane, shrinking the space in front of the vehicle. A beige hatchback continues straight in the ego lane and serves as the immediate lead car. Close on the left, a large tarp-covered truck travels slightly ahead near the curb and partly obscures the left view. Far-right oncoming vehicles are present but do not interact. A wide hatched marking lies to the right of the ego lane.", "hazard_reasoning": "The main hazard is the white truck merging from the left lane into the ego lane. Because it is cutting in ahead, it could require sudden braking or a defensive maneuver, so the driver should keep alert and preserve a safe following gap."}
{"id": "train_09474", "split": "train", "clip_key": "titan_clip_1193_000594_movie", "source": {"subset": "titan", "scenario": "clip_1193", "frame": "000594"}, "frames": ["titan_clip_1193_000594_movie_t-3.jpg", "titan_clip_1193_000594_movie_t-2.jpg", "titan_clip_1193_000594_movie_t-1.jpg", "titan_clip_1193_000594_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "The scene shows a tight urban back street between tall buildings, essentially one narrow lane with no divider and clean pavement; there is little traffic and no moving vehicles. Near the right edge beside the ego car, a man is walking toward it along the curb and slightly intrudes into the lane, so he is relevant to the path. Another pedestrian is farther ahead near the center-left, moving away and potentially slowing progress. On the left, red traffic cones line the area beside a low curb in front of the ego vehicle and make the roadway narrower; green cones and a parked bicycle are on the right, with more cones and a small barrier visible farther ahead.", "hazard_reasoning": "The main hazard is the red traffic cone on the left side ahead of the ego car. It partly blocks the travel lane, so the vehicle needs to pass carefully to avoid hitting it."}
{"id": "train_09475", "split": "train", "clip_key": "2020-0206-142535_005891_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-142535_005891_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-142535_005891_movie_t-3_augB1.jpg", "2020-0206-142535_005891_movie_t-2_augB1.jpg", "2020-0206-142535_005891_movie_t-1_augB1.jpg", "2020-0206-142535_005891_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of bus cutting in", "environment_perception": "The scene shows a quiet urban two-way road with one narrow lane in each direction and a steady view throughout. A small white box truck is traveling ahead in the ego lane at a slow pace, which keeps the vehicle moving slowly. In the opposite lane, a pink bus shifts toward the center while going around a black van parked at the curb, and this causes it to intrude into the ego lane. The black van is stopped along the oncoming curb near the ego vehicle’s path, and temporary barriers with cones run along the left side, making the roadway feel tighter.", "hazard_reasoning": "The main risk is the pink bus moving into the ego lane as it passes the parked van. Since the bus is cutting across from the oncoming side, it could enter the driving path unexpectedly and create a direct conflict, so this is a serious lane-change hazard."}
{"id": "train_09476", "split": "train", "clip_key": "2020-0226-101332_035616_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-101332_035616_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-101332_035616_movie_t-3_augB1.jpg", "2020-0226-101332_035616_movie_t-2_augB1.jpg", "2020-0226-101332_035616_movie_t-1_augB1.jpg", "2020-0226-101332_035616_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "The scene shows a busy urban roadway beneath an elevated expressway, with a guardrail dividing a parallel right-side lane. The road surface is dry, and traffic is moving slowly in a queue. A black sedan in front of the ego vehicle is braking, while a red sedan from the left lane shifts into its path. Farther ahead in the same lane, a white van remains stopped, and a large green truck in the far-left lane continues creeping forward.", "hazard_reasoning": "The main risk is the red sedan merging ahead of the black sedan in the ego lane. That maneuver causes the black sedan to slow sharply, creating a strong rear-end collision risk if the driver does not react immediately."}
{"id": "train_09477", "split": "train", "clip_key": "2020-0227-104226_026363_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "026363"}, "frames": ["2020-0227-104226_026363_movie_t-3.jpg", "2020-0227-104226_026363_movie_t-2.jpg", "2020-0227-104226_026363_movie_t-1.jpg", "2020-0227-104226_026363_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be cautious of minivan cutting into lane", "environment_perception": "The scene shows a light-traffic urban two-way street with one lane each way, passing under an elevated expressway on the right. The roadway appears dry and clear. A black minivan ahead is moving from the left side into the ego lane, partially blocking the forward path. On the elevated ramp to the right, a white van is traveling upward in the same general direction behind a concrete barrier, and a silver microvan is also moving along that ramp toward the camera; both are separated from the main road. No obvious traffic lights are present, but there are no-parking signs along the left side.", "hazard_reasoning": "The black minivan is merging from the left into the ego lane and may encroach on the vehicle’s path. Because its movement directly affects the lane ahead, it creates a moderate collision risk and requires caution and readiness to react."}
{"id": "train_09478", "split": "train", "clip_key": "titan_clip_1214_000192_movie", "source": {"subset": "titan", "scenario": "clip_1214", "frame": "000192"}, "frames": ["titan_clip_1214_000192_movie_t-3.jpg", "titan_clip_1214_000192_movie_t-2.jpg", "titan_clip_1214_000192_movie_t-1.jpg", "titan_clip_1214_000192_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the van", "environment_perception": "This is a narrow two-way street in an urban residential area, with no center divider or lane marking and relatively light traffic. A black van ahead on the right is moving in the middle of the roadway toward the ego vehicle, taking up the shared space and limiting room to pass. Two pedestrians along the right side near the buildings are walking and pausing close to the van and the edge of the travel area, keeping them near the ego vehicle’s route. There is also a blue pedestrian-zone sign with a 7:30-8:30 restriction, school-zone style road markings, and a building corner that makes the right turn area partly hidden.", "hazard_reasoning": "The main risk is the black van approaching head-on in the center of the road. Since it is directly in the ego vehicle’s path, available reaction time is shortened and the driver needs to steer carefully to avoid a collision."}
{"id": "train_09479", "split": "train", "clip_key": "titan_clip_1046_000312_movie", "source": {"subset": "titan", "scenario": "clip_1046", "frame": "000312"}, "frames": ["titan_clip_1046_000312_movie_t-3.jpg", "titan_clip_1046_000312_movie_t-2.jpg", "titan_clip_1046_000312_movie_t-1.jpg", "titan_clip_1046_000312_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is a narrow two-way city street with a worn roadway and no center divider. Temporary barriers line the left side and make the roadway feel constricted, while traffic remains light. A white car in front of the ego vehicle is moving straight ahead at a moderate pace. Near the left curb, a silver car is stopped beside the barricades and extends slightly into the lane. An orange cone on the left highlights the work area, with more barricades continuing along the block, and another cone is visible on the right near a railing.", "hazard_reasoning": "The orange cone on the left signals an active construction area. Because the work zone can narrow the lane and may hide workers or equipment ahead, it creates a potential driving hazard. The safest response is to reduce speed and proceed carefully through the area."}
{"id": "train_09480", "split": "train", "clip_key": "2020-0226-101332_057701_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "057701"}, "frames": ["2020-0226-101332_057701_movie_t-3.jpg", "2020-0226-101332_057701_movie_t-2.jpg", "2020-0226-101332_057701_movie_t-1.jpg", "2020-0226-101332_057701_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield now to avoid collision", "environment_perception": "An urban multi-lane intersection with a flat roadway and no central divider is ahead, with moderate traffic moving in both directions. In the ego lane, a small silver minivan slightly left of center is continuing into the junction at a slow pace. In the opposing lanes, a black SUV is traveling through the intersection toward the ego vehicle in the right oncoming lane, aligned with the path opposite the ego lane. On the near right side, a small tarp-covered pickup is parked or stopped at the curb and extends a little into the ego lane. Overhead signs mark left-turn, straight, and right-turn lanes.", "hazard_reasoning": "The key hazard is the black SUV approaching from the opposite direction through the intersection. Because it is moving toward the ego vehicle and entering the ego path at an uncontrolled intersection, the driver should yield to avoid a possible collision."}
{"id": "train_09481", "split": "train", "clip_key": "2020-0225-102455_084274_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "084274"}, "frames": ["2020-0225-102455_084274_movie_t-3.jpg", "2020-0225-102455_084274_movie_t-2.jpg", "2020-0225-102455_084274_movie_t-1.jpg", "2020-0225-102455_084274_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A multi-lane urban roadway with smooth asphalt shows moderate traffic moving in the same direction and no center median. Directly ahead in the ego lane, a black van is signaling and shifting left. A large box truck is traveling slightly ahead in the right lane at a steady speed, leaving less room on that side. Several cars farther ahead in the left and center lanes continue toward the next intersection, while blue overhead direction signs are visible above the road.", "hazard_reasoning": "The black van ahead is moving out of the ego lane into the left lane, which places it near the ego vehicle’s forward path and may tighten the available gap. Because this lane change can cut down spacing, the safer response is to slow down and keep a buffer."}
{"id": "train_09482", "split": "train", "clip_key": "2020-0213-143552_009654_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009654"}, "frames": ["2020-0213-143552_009654_movie_t-3.jpg", "2020-0213-143552_009654_movie_t-2.jpg", "2020-0213-143552_009654_movie_t-1.jpg", "2020-0213-143552_009654_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the traffic cone", "environment_perception": "The scene shows a dry urban two-way road with one lane in each direction and light traffic. A brief roadwork section constricts the roadway: an orange cone is placed along the right edge of the ego lane, while additional cones and barricades continue ahead near the center line and right shoulder. A dark sedan in front travels through the narrowed opening and appears to guide the ego vehicle's path. In the opposite lane, a small white truck is coming toward the camera, which matters because the reduced width leaves less room to pass safely. A pedestrian on the right sidewalk is walking away near the work area, but stays off the road.", "hazard_reasoning": "The main issue is the orange traffic cone sitting on the right side of the ego lane. It intrudes into the driving path and creates a partial blockage, so the driver needs to steer around it to avoid contact and proceed safely."}
{"id": "train_09483", "split": "train", "clip_key": "titan_clip_1046_000312_movie", "source": {"subset": "titan", "scenario": "clip_1046", "frame": "000312"}, "frames": ["titan_clip_1046_000312_movie_t-3.jpg", "titan_clip_1046_000312_movie_t-2.jpg", "titan_clip_1046_000312_movie_t-1.jpg", "titan_clip_1046_000312_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows a narrow two-way city street with faded pavement and no center median. Temporary barriers tighten the left side of the road, and traffic is light. A white car ahead in the ego lane is traveling straight at a steady moderate pace. Along the left curb, a silver car is stopped near the barricades and extends slightly into the lane. An orange cone marks the left-side work area, with more barricades continuing down the block, and another cone is visible near the right curb by a railing.", "hazard_reasoning": "The visible orange cone on the left signals roadside construction. Since the work zone can narrow the lane or hide workers and equipment ahead, the safest response is to slow down and proceed carefully."}
{"id": "train_09484", "split": "train", "clip_key": "2020-0226-101332_057701_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "057701"}, "frames": ["2020-0226-101332_057701_movie_t-3.jpg", "2020-0226-101332_057701_movie_t-2.jpg", "2020-0226-101332_057701_movie_t-1.jpg", "2020-0226-101332_057701_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield now to avoid collision", "environment_perception": "An urban intersection with multiple lanes and no median lies ahead on a smooth road, with moderate traffic moving in both directions. In the ego lane, a small silver minivan just left of center is entering the junction slowly and appears to be leading the flow. In the opposing direction, a black SUV in the right oncoming lane is continuing through the intersection toward the ego vehicle. On the near right curb, a small tarp-covered pickup is stationary and sticks slightly into the ego lane. Overhead signs mark the left-turn, straight, and right-turn lanes.", "hazard_reasoning": "The black SUV is the main threat because it is moving toward the ego car from the opposite direction through the intersection. Since it is advancing into the ego vehicle's path at an uncontrolled junction, the driver should yield to avoid a possible collision."}
{"id": "train_09485", "split": "train", "clip_key": "2020-0217-144444_006082_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "006082"}, "frames": ["2020-0217-144444_006082_movie_t-3.jpg", "2020-0217-144444_006082_movie_t-2.jpg", "2020-0217-144444_006082_movie_t-1.jpg", "2020-0217-144444_006082_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of lane-changing vehicle", "environment_perception": "The scene shows a multi-lane urban road curving gently left, with sidewalks and guardrails on both sides, dry pavement, and moderate traffic moving steadily without a physical median. A yellow sedan ahead on the left is shifting rightward into the ego lane, and the gap ahead of the ego vehicle becomes smaller as it merges. To the right, a black minivan keeps going straight at a slightly faster pace, staying alongside. Farther ahead in the ego lane, another vehicle continues smoothly toward the junction where overhead traffic lights are visible.", "hazard_reasoning": "The main risk is the yellow sedan merging from the left lane into the ego lane directly ahead of the car. Since the ego lane is open, the vehicle is completing a lane change into that space and may require the driver to slow down or adjust position to keep a safe following distance."}
{"id": "train_09486", "split": "train", "clip_key": "2020-0218-103119_013175_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "013175"}, "frames": ["2020-0218-103119_013175_movie_t-3.jpg", "2020-0218-103119_013175_movie_t-2.jpg", "2020-0218-103119_013175_movie_t-1.jpg", "2020-0218-103119_013175_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be cautious of van merging into lane", "environment_perception": "This is a multi-lane urban road with painted lane markings, dry pavement, and light traffic. A white van ahead is moving from the left lane toward the ego lane and is now settling in front of the vehicle, which trims the available gap. A small car farther ahead in the right lane continues straight at a steady pace. Two pedestrians remain on the left sidewalk and do not enter the road. A round sign marked 50 indicates the speed limit.", "hazard_reasoning": "The main concern is the white van merging into the ego lane directly ahead. Its lane change shortens the following distance and could require a reaction from the driver, so this is the critical hazard to watch."}
{"id": "train_09487", "split": "train", "clip_key": "2020-0207-151349_014378_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "014378"}, "frames": ["2020-0207-151349_014378_movie_t-3.jpg", "2020-0207-151349_014378_movie_t-2.jpg", "2020-0207-151349_014378_movie_t-1.jpg", "2020-0207-151349_014378_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "This is an urban multi-lane roadway with smooth pavement and dense stop-and-go traffic. Bright sun glare from the front slightly limits visibility. A white microvan ahead in the ego lane is drifting left into the adjacent lane, reducing the space in front of the ego car as it merges. On the right front, a large box truck in the next lane is stopped very close and blocks part of the forward view. On the far left, another freight truck is nearly stationary and parallel, tightening the gap around the van. A low hedge runs along the right side of the road.", "hazard_reasoning": "The main hazard is the white van merging left from the ego lane into the lane ahead. Its lane change could block the ego car's path without much warning, so the driver needs to keep pace and follow the vehicle ahead carefully."}
{"id": "train_09488", "split": "train", "clip_key": "2020-0207-101955_088035_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "088035"}, "frames": ["2020-0207-101955_088035_movie_t-3.jpg", "2020-0207-101955_088035_movie_t-2.jpg", "2020-0207-101955_088035_movie_t-1.jpg", "2020-0207-101955_088035_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of truck changing lanes", "environment_perception": "The scene shows a multilane urban roadway beneath an elevated expressway, with straight lanes, smooth pavement, and moderate traffic heading slowly toward a signalized intersection. A blue flatbed truck ahead in the ego lane is moving left into the adjacent lane, leaving open space directly in front as it shifts over. To the right, a tall white box truck continues straight at low speed and limits forward progress while partly blocking the view ahead. On the far left, a long flatbed loaded with construction machinery advances slowly and stays roughly parallel to the ego vehicle.", "hazard_reasoning": "The main risk is the blue truck crossing from the ego lane into the left lane. Because it is actively changing lanes nearby, it could enter the ego vehicle’s path and create a collision risk, so it should be treated as the critical hazard."}
{"id": "train_09489", "split": "train", "clip_key": "2020-0213-143552_009654_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009654"}, "frames": ["2020-0213-143552_009654_movie_t-3.jpg", "2020-0213-143552_009654_movie_t-2.jpg", "2020-0213-143552_009654_movie_t-1.jpg", "2020-0213-143552_009654_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the traffic cone", "environment_perception": "This is an urban two-way street with one lane in each direction, dry road surface, and light traffic. A brief work zone tightens the driving space; an orange cone is placed along the right edge of the ego lane, while additional cones and barricades continue ahead near the center line and right shoulder. A dark sedan in front of the ego vehicle continues forward through the narrowed opening, effectively guiding the flow. In the opposing lane, a small white truck comes toward the scene near the cones, which matters because the reduced width leaves less room to pass safely. A pedestrian on the right sidewalk is walking away from the camera beside the work area and is not in the roadway.", "hazard_reasoning": "The main hazard is the orange cone intruding into the right side of the ego lane. Because it partly blocks the lane, the driver needs to steer around it to prevent contact and keep moving through the work zone safely."}
{"id": "train_09490", "split": "train", "clip_key": "2020-0226-101332_057701_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "057701"}, "frames": ["2020-0226-101332_057701_movie_t-3.jpg", "2020-0226-101332_057701_movie_t-2.jpg", "2020-0226-101332_057701_movie_t-1.jpg", "2020-0226-101332_057701_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield now to avoid collision", "environment_perception": "A multi-lane urban intersection with a smooth roadway and no center median lies ahead, with moderate traffic moving in both directions. In the ego lane, a small silver minivan slightly left of center continues into the junction at a slow pace. In the opposing direction, a black SUV in the right oncoming lane is crossing through the intersection toward the ego vehicle. On the near right curb, a small tarp-covered pickup is stationary and extends a little into the ego lane. Overhead lane signs mark the left-turn, straight, and right-turn lanes.", "hazard_reasoning": "The black SUV is the critical threat because it is moving toward the ego car through the intersection in the oncoming lane. Since it is entering the ego vehicle's path at an uncontrolled intersection, the safe response is to yield to avoid a collision."}
{"id": "train_09491", "split": "train", "clip_key": "titan_clip_381_000216_movie", "source": {"subset": "titan", "scenario": "clip_381", "frame": "000216"}, "frames": ["titan_clip_381_000216_movie_t-3.jpg", "titan_clip_381_000216_movie_t-2.jpg", "titan_clip_381_000216_movie_t-1.jpg", "titan_clip_381_000216_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Manoeuvre carefully around the van", "environment_perception": "The scene shows a narrow two-way urban street with brick paving and slow-moving traffic, with no center divider. A white van on the left is pulling out from the curb into the ego vehicle’s lane and edging toward the car, reducing the passing space. Ahead, a cyclist is traveling away in the middle of the lane at low speed, which may slow progress. Near the left curb, a few pedestrians are gathered around a dark van and are close to stepping into the road. Parked cars on the left and shopfronts with cones on the right leave only a tight corridor.", "hazard_reasoning": "The main concern is the white van on the left merging into the ego lane while moving toward the ego vehicle. Because it is intruding into the lane and narrowing the available space, there is a significant collision risk, so the driver should steer carefully around it."}
{"id": "train_09492", "split": "train", "clip_key": "titan_clip_1298_000378_movie", "source": {"subset": "titan", "scenario": "clip_1298", "frame": "000378"}, "frames": ["titan_clip_1298_000378_movie_t-3.jpg", "titan_clip_1298_000378_movie_t-2.jpg", "titan_clip_1298_000378_movie_t-1.jpg", "titan_clip_1298_000378_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cones.", "environment_perception": "This is an urban shopping road with one forward lane and no central divider, and the pavement looks slightly worn with little traffic visible ahead. On the left side, road maintenance is in progress: multiple blue service trucks are parked there, a crane is erected, and cones close off part of the lane, leaving less space to drive through. A pedestrian is standing near a shopfront on the right sidewalk and is not entering the road, while a bicycle rests by the hedge on the right and stays out of the travel path. No clear signs or speed limits are visible, and the work area is the dominant obstacle.", "hazard_reasoning": "The main hazard is the set of traffic cones closing off the left side of the roadway. Together with the crane arm, they partially block the lane, creating a narrowed passage that requires careful driving to avoid contact."}
{"id": "train_09493", "split": "train", "clip_key": "2020-0129-105040_010401_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-105040_010401_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-105040_010401_movie_t-3_augB1.jpg", "2020-0129-105040_010401_movie_t-2_augB1.jpg", "2020-0129-105040_010401_movie_t-1_augB1.jpg", "2020-0129-105040_010401_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene shows an urban multi-lane roadway near an intersection with dry, smooth pavement and moderate traffic moving in the same direction. A blue truck ahead-left is shifting right from the left lane and appears to be moving into the ego lane directly in front. Farther ahead, a small white box truck remains in the ego lane at a steady speed, which limits forward progress. To the right, a large coach bus is traveling alongside slightly ahead in the adjacent lane, leaving little room to move right.", "hazard_reasoning": "The main risk is the blue truck merging from the left into the ego lane. Because it is cutting in ahead, the ego vehicle needs to slow down and keep a safe gap to avoid a collision."}
{"id": "train_09494", "split": "train", "clip_key": "2020-0205-152530_039963_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "039963"}, "frames": ["2020-0205-152530_039963_movie_t-3.jpg", "2020-0205-152530_039963_movie_t-2.jpg", "2020-0205-152530_039963_movie_t-1.jpg", "2020-0205-152530_039963_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of hatchback changing lanes", "environment_perception": "The scene shows a multi-lane urban road with smooth pavement and moderate traffic moving in the same direction, with no visible median. A black hatchback just ahead of the ego vehicle shifts right into the neighboring lane, temporarily limiting the ego car’s forward progress. In the farther ahead-right lane, a city bus keeps going straight and appears to be slowing traffic there. A white minivan slightly ahead on the right continues straight at a similar pace and could merge back toward the center. Several pedestrians remain waiting at the left curb by the crosswalk and are not entering the road.", "hazard_reasoning": "The main concern is the black hatchback ahead moving into the right lane. Since it is close in front of the ego vehicle, this lane change may interfere with the ego car’s path, so speed adjustment and caution are warranted."}
{"id": "train_09495", "split": "train", "clip_key": "titan_clip_1298_000378_movie", "source": {"subset": "titan", "scenario": "clip_1298", "frame": "000378"}, "frames": ["titan_clip_1298_000378_movie_t-3.jpg", "titan_clip_1298_000378_movie_t-2.jpg", "titan_clip_1298_000378_movie_t-1.jpg", "titan_clip_1298_000378_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cones.", "environment_perception": "The scene shows an urban shopping road with one lane ahead and no median, with lightly worn asphalt and little traffic visible. On the left side, roadworks are in progress: multiple blue service trucks are parked, a crane is positioned nearby, and traffic cones close off part of the roadway, reducing the space available to drive. On the right, a pedestrian is standing beside a storefront on the sidewalk and is not entering the road. A bicycle is parked near the hedge on the right and stays out of the lane. No clear signs or speed limit markers stand out, and the construction area is the main feature affecting travel.", "hazard_reasoning": "The left side of the lane is restricted by cones, and the crane arm adds an additional obstruction near the roadway. Because the usable lane is narrowed by this work zone, the driver should proceed cautiously and steer around it to avoid contact."}
{"id": "train_09496", "split": "train", "clip_key": "titan_clip_452_000018_movie", "source": {"subset": "titan", "scenario": "clip_452", "frame": "000018"}, "frames": ["titan_clip_452_000018_movie_t-3.jpg", "titan_clip_452_000018_movie_t-2.jpg", "titan_clip_452_000018_movie_t-1.jpg", "titan_clip_452_000018_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck on the right side", "environment_perception": "The scene shows a narrow urban two-way street without a centerline, bordered by shops and midrise buildings, with smooth pavement and sparse traffic. A white truck is coming toward the ego vehicle on the right side of the road in the opposing lane. Farther ahead on the right curb, a brown truck is parked in a small bay with its rear door open, which reduces available space on that side. A pedestrian is visible on the left sidewalk, walking away past the storefronts.", "hazard_reasoning": "The main risk is the white truck traveling toward the ego vehicle from the right side. In addition, the parked brown truck limits visibility along the right edge, so there could be hazards appearing from that direction."}
{"id": "train_09497", "split": "train", "clip_key": "2020-0203-154554_009773_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "009773"}, "frames": ["2020-0203-154554_009773_movie_t-3.jpg", "2020-0203-154554_009773_movie_t-2.jpg", "2020-0203-154554_009773_movie_t-1.jpg", "2020-0203-154554_009773_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of white van merging", "environment_perception": "The scene shows an urban multilane intersection with clear pavement, a through lane and a right-turn lane, plus a small curb island on the right. Traffic is fairly busy as vehicles move through the junction. A white van enters from the right side of the intersection and angles toward the ego vehicle, drifting into the ego lane. Ahead, several trucks and vans continue straight through at a slow pace, keeping the flow steady. A small group of pedestrians stands waiting on the right sidewalk near the corner, and they do not move. Oncoming traffic beyond the intersection stays in its own lanes and does not interfere with the approach.", "hazard_reasoning": "The main risk is the white van merging in from the right and moving into the ego vehicle’s path. Because it is cutting across into the lane, it could force an abrupt response if the driver does not anticipate the maneuver early."}
{"id": "train_09498", "split": "train", "clip_key": "titan_clip_452_000018_movie", "source": {"subset": "titan", "scenario": "clip_452", "frame": "000018"}, "frames": ["titan_clip_452_000018_movie_t-3.jpg", "titan_clip_452_000018_movie_t-2.jpg", "titan_clip_452_000018_movie_t-1.jpg", "titan_clip_452_000018_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck on the right side", "environment_perception": "A narrow two-way urban street without a center line extends past shops and mid-rise buildings, with smooth pavement and sparse traffic. Ahead on the right side, a white truck is coming toward the ego vehicle in the opposing lane. Near the right curb a brown truck is parked in a bay with its rear door open, reducing available room on that side. A pedestrian is also visible on the left sidewalk walking away from the camera along the storefronts.", "hazard_reasoning": "The main concern is the white truck traveling toward the ego vehicle on the right side of the road. In addition, the parked truck limits visibility and space on the right, so that area should be watched for possible hazards."}
{"id": "train_09499", "split": "train", "clip_key": "2020-0213-143552_007933_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "007933"}, "frames": ["2020-0213-143552_007933_movie_t-3.jpg", "2020-0213-143552_007933_movie_t-2.jpg", "2020-0213-143552_007933_movie_t-1.jpg", "2020-0213-143552_007933_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene shows an urban multi-lane road with a right-turn lane, dry pavement, and vehicles moving normally. A white van is traveling straight ahead in the ego lane at a steady speed. Slightly ahead and left of center, a black sedan is coming out from a concealed left-side intersection and moving toward the ego lane. On the far side, oncoming traffic continues past, and several parked cars line the right curb near the turn bay. Overhead lane signals appear at the next intersection.", "hazard_reasoning": "The main risk is the black sedan, since it is merging from the hidden left-side intersection into the ego lane. Because it could enter the lane unexpectedly, the safest response is to slow down and give it room to merge."}
{"id": "train_09500", "split": "train", "clip_key": "titan_clip_277_000594_movie", "source": {"subset": "titan", "scenario": "clip_277", "frame": "000594"}, "frames": ["titan_clip_277_000594_movie_t-3.jpg", "titan_clip_277_000594_movie_t-2.jpg", "titan_clip_277_000594_movie_t-1.jpg", "titan_clip_277_000594_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of construction work ahead", "environment_perception": "A narrow two-way urban street with one lane in each direction and no median passes between tall buildings; the pavement is uneven with some wet patches, and traffic is light but slows near roadside work. On the left, construction activity takes up part of the ego lane, with a stopped dump truck, cones, and barricades restricting the available space. A white van ahead in the same lane is also moving slowly beside the work truck, effectively queuing through the area. On the right side, an oncoming car is coming forward through its lane and makes the remaining gap tighter. Two pedestrians are visible on the right sidewalk near a parking entrance, but they stay off the road. A red traffic light is visible far ahead.", "hazard_reasoning": "The main hazard is the construction work encroaching on the left side of the lane. The driver needs to stay alert and keep a safe clearance to avoid hitting the cones or the stopped truck."}
{"id": "train_09501", "split": "train", "clip_key": "titan_clip_452_000018_movie", "source": {"subset": "titan", "scenario": "clip_452", "frame": "000018"}, "frames": ["titan_clip_452_000018_movie_t-3.jpg", "titan_clip_452_000018_movie_t-2.jpg", "titan_clip_452_000018_movie_t-1.jpg", "titan_clip_452_000018_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck on the right side", "environment_perception": "The scene shows a narrow urban two-way street with no centerline, lined by shops and midrise buildings, and traffic appears light. A white truck is ahead on the right side, moving toward the ego vehicle in the opposing lane. Near the right curb, a brown truck is parked in a bay with its rear door open, leaving less room along that side. A pedestrian is visible on the left sidewalk walking away from the camera beside the storefronts.", "hazard_reasoning": "The main concern is the white truck approaching from the right side in the oncoming lane. In addition, the parked truck limits visibility and space on the right, so that area should be watched for possible risk."}
{"id": "train_09502", "split": "train", "clip_key": "2020-0221-115122_018082_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "018082"}, "frames": ["2020-0221-115122_018082_movie_t-3.jpg", "2020-0221-115122_018082_movie_t-2.jpg", "2020-0221-115122_018082_movie_t-1.jpg", "2020-0221-115122_018082_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the green sedan merging", "environment_perception": "The scene is an urban roadway beneath an elevated expressway, with three one-way lanes, a right-side guardrail, and pavement that is intact but worn. Traffic is dense and moving slowly. A green sedan ahead on the right moves from the right lane into the ego lane and ends up directly in front, reducing the following distance. A black minivan travels beside the ego vehicle in the left lane and edges forward, leaving little room to move left. Further ahead in the ego lane, a silver van is also slowing with the traffic queue.", "hazard_reasoning": "The main concern is the green sedan merging from the right lane into the ego lane ahead of the vehicle. This lane change can cut down available space and force the ego car to adjust speed to prevent a conflict."}
{"id": "train_09503", "split": "train", "clip_key": "titan_clip_277_000594_movie", "source": {"subset": "titan", "scenario": "clip_277", "frame": "000594"}, "frames": ["titan_clip_277_000594_movie_t-3.jpg", "titan_clip_277_000594_movie_t-2.jpg", "titan_clip_277_000594_movie_t-1.jpg", "titan_clip_277_000594_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of construction work ahead", "environment_perception": "A narrow urban two-way road with a single lane each way and no center divider runs between tall buildings, with patchy pavement and some wet spots. Traffic is light but slows because of a work area on the left side, where a stopped dump truck, cones, and barricades partially block the ego lane. A white van ahead in the same lane is also slowing and queuing beside the work truck. In the opposite lane, an oncoming car is moving toward the gap, making the available space even tighter. Two pedestrians are visible on the right sidewalk near a parking entrance, but they remain off the roadway. A red traffic light is visible in the distance.", "hazard_reasoning": "The main risk is the construction work encroaching from the left and narrowing the lane. The driver needs to keep clear of the cones and stopped truck and proceed cautiously through the work zone to avoid contact."}
{"id": "train_09504", "split": "train", "clip_key": "2020-0210-155354_001071_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "001071"}, "frames": ["2020-0210-155354_001071_movie_t-3.jpg", "2020-0210-155354_001071_movie_t-2.jpg", "2020-0210-155354_001071_movie_t-1.jpg", "2020-0210-155354_001071_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene is an urban shopping road with multiple lanes in both directions, no central median, and generally smooth traffic movement. A white SUV ahead in the ego lane continues moving forward while shifting right to go around a parked vehicle along the left curb, effectively leading the flow. In the opposite lane, a black sedan approaches the camera and stays within its lane. Sidewalks on both sides are busy with pedestrians near storefronts and behind railings, but none are entering the roadway. A parked white van on the left remains the main roadside obstruction.", "hazard_reasoning": "The main concern is the white SUV ahead adjusting its path in the ego lane because of the parked vehicle on the left. The safest response is to keep following it with enough distance, since its movement could require the ego vehicle to slow down unexpectedly."}
{"id": "train_09505", "split": "train", "clip_key": "2020-0225-102455_021720_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "021720"}, "frames": ["2020-0225-102455_021720_movie_t-3.jpg", "2020-0225-102455_021720_movie_t-2.jpg", "2020-0225-102455_021720_movie_t-1.jpg", "2020-0225-102455_021720_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "be cautious of lane-changing vehicle", "environment_perception": "This is an urban two-way road with one narrow lane in each direction, bending to the right, and the surface appears intact. Traffic is dense and moving slowly. A silver sedan ahead on the right is moving into the ego lane from the right side while slowing down. Further ahead in the same lane, a black minivan is stopped near the curve, adding to the buildup. In the opposite lane on the right, several vehicles are queued and mostly motionless. Two pedestrians are waiting on the right sidewalk next to a zebra crossing, and pedestrian-crossing plus no-stopping signs are visible on roadside poles.", "hazard_reasoning": "The key hazard is the silver sedan merging into the ego lane from the right directly ahead. This unexpected lane-change maneuver creates a possible conflict with the ego vehicle, so it should be treated as a serious hazard and the driver should stay alert."}
{"id": "train_09506", "split": "train", "clip_key": "2020-0227-104226_054546_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054546"}, "frames": ["2020-0227-104226_054546_movie_t-3.jpg", "2020-0227-104226_054546_movie_t-2.jpg", "2020-0227-104226_054546_movie_t-1.jpg", "2020-0227-104226_054546_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "The scene shows an urban two-lane roadway with smooth pavement, a solid centerline, and no median, carrying moderate two-way traffic. The ego vehicle is aligned in the left lane near a zebra crossing. A black hatchback is coming toward the ego car in the opposing right lane and continues straight ahead. Farther up the road, several more vehicles are also approaching in the same opposite-direction lane. A pedestrian is visible on the right sidewalk beside the crosswalk, remaining on the curb and not entering the road.", "hazard_reasoning": "The main risk is the black hatchback approaching head-on in the right lane. Since it is moving toward the ego vehicle and could conflict if the car proceeds, the safest response is to stop immediately to prevent a crash."}
{"id": "train_09507", "split": "train", "clip_key": "2020-0131-135401_023097_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "023097"}, "frames": ["2020-0131-135401_023097_movie_t-3.jpg", "2020-0131-135401_023097_movie_t-2.jpg", "2020-0131-135401_023097_movie_t-1.jpg", "2020-0131-135401_023097_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around construction cone", "environment_perception": "The scene shows an urban divided roadway with light traffic moving in the same direction. A temporary work area blocks the left side, marked by cones, red barriers, and yellow arrow signs telling drivers to merge right. A construction truck is stopped ahead on the left inside the blocked section, and an orange cone-like object is positioned near the left side of the ego vehicle, narrowing that lane. A road worker is visible ahead near the cones on the right edge of the ego lane and could come close to the driving path. Farther ahead, a dark car continues straight through the narrowed roadway at a slow pace.", "hazard_reasoning": "The main hazard is the construction cone-like object on the left side of the ego car. Because the lane is restricted by construction barriers, the vehicle should steer around it to avoid contact and safely pass through the work zone."}
{"id": "train_09508", "split": "train", "clip_key": "2020-0220-102630_027987_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "027987"}, "frames": ["2020-0220-102630_027987_movie_t-3.jpg", "2020-0220-102630_027987_movie_t-2.jpg", "2020-0220-102630_027987_movie_t-1.jpg", "2020-0220-102630_027987_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "This is an urban two-way street with two lanes in the same direction, lined by mid-rise buildings and fairly moderate traffic. In the ego lane ahead, a gray box truck is moving right as it starts to merge into the adjacent lane. A white car is already traveling in that right lane near the truck, leaving little space for the maneuver. Beyond the center line, an oncoming white van is visible but remains in its own lane. The left side pavement also shows a dedicated-use marking.", "hazard_reasoning": "The main risk is the gray truck shifting from the ego lane into the right lane ahead of the driver. Because it is moving across lanes with limited room beside the white car, the merge could interfere with the ego vehicle's path. The safest response is to slow down and keep a safe gap."}
{"id": "train_09509", "split": "train", "clip_key": "2020-0227-104226_054546_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054546"}, "frames": ["2020-0227-104226_054546_movie_t-3.jpg", "2020-0227-104226_054546_movie_t-2.jpg", "2020-0227-104226_054546_movie_t-1.jpg", "2020-0227-104226_054546_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "An urban two-lane street with smooth pavement and a solid centerline is visible, with no median and moderate traffic in both directions. The ego vehicle is aligned with the left lane near a zebra crossing. A black hatchback is coming straight toward the ego car in the opposing right lane, and more oncoming cars are visible farther ahead in that same lane. A pedestrian is waiting on the right sidewalk by the crosswalk and has not entered the road.", "hazard_reasoning": "The black hatchback in the opposite lane is approaching directly toward the ego vehicle. If the ego car proceeds into the crossing area, there is a risk of collision, so the safest response is to stop immediately."}
{"id": "train_09510", "split": "train", "clip_key": "2020-0214-102601_078931_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0214-102601_078931_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0214-102601_078931_movie_t-3_augB1.jpg", "2020-0214-102601_078931_movie_t-2_augB1.jpg", "2020-0214-102601_078931_movie_t-1_augB1.jpg", "2020-0214-102601_078931_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Start moving", "environment_perception": "A narrow two-way city street with one lane in each direction passes storefronts, showing smooth pavement, a green painted shoulder on the left, and an orange centerline. Traffic is moving slowly. In the ego lane ahead, a gray SUV begins to creep forward as a white box truck farther up also resumes rolling, and the SUV matches that pace. The white truck continues inching along the same lane near the roadside market, keeping the line of vehicles compressed. The gray SUV sits ahead of the ego car on the left side by the shop and starts moving with the queue.", "hazard_reasoning": "The main issue is the gray SUV ahead of the ego vehicle beginning to move in the same lane because the truck in front has started creeping again. The driver should also move off smoothly to preserve a safe following gap and keep with the traffic flow."}
{"id": "train_09511", "split": "train", "clip_key": "titan_clip_887_000510_movie", "source": {"subset": "titan", "scenario": "clip_887", "frame": "000510"}, "frames": ["titan_clip_887_000510_movie_t-3.jpg", "titan_clip_887_000510_movie_t-2.jpg", "titan_clip_887_000510_movie_t-1.jpg", "titan_clip_887_000510_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of merging sedan", "environment_perception": "A dry, smooth urban commercial roadway with two lanes in the same direction and no median lies ahead, with light to moderate traffic. The right curb lane is partly closed off by cones and work trucks, which tightens the available driving space. A black sedan ahead is moving in from the left and merging into the ego lane, where it ends up in the travel path and may slow progress. Farther forward, a small white truck in the same lane is also slowing as it passes the work zone, adding to the restriction. Parked vehicles are lined along both curbs, including a dark minivan on the left, but they are stationary and not intruding into the lane.", "hazard_reasoning": "The main hazard is the black sedan merging from the left into the ego lane. Because it is entering the lane ahead of the ego vehicle, it could create an unexpected conflict and force a speed or position adjustment. Since the sedan may continue merging without enough clearance, it is the most relevant risk to monitor."}
{"id": "train_09512", "split": "train", "clip_key": "2020-0203-114632_038577_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "038577"}, "frames": ["2020-0203-114632_038577_movie_t-3.jpg", "2020-0203-114632_038577_movie_t-2.jpg", "2020-0203-114632_038577_movie_t-1.jpg", "2020-0203-114632_038577_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows an urban divided arterial with two lanes each way and only painted lane lines, with dry pavement and generally light, steady traffic. A white sedan ahead in the ego lane travels straight at a constant speed. To the left, a silver van is shifting rightward from the adjacent lane toward the ego lane, likely because construction ahead is narrowing that lane and bringing it into the ego path. A light blue van is parked by the left curb near the camera and does not move. Far-right opposing traffic passes normally without influencing the ego vehicle.", "hazard_reasoning": "The main risk is the silver van merging from the left into the ego lane due to the construction-related lane narrowing ahead. The driver should slow down and keep a safe gap to prepare for the merge."}
{"id": "train_09513", "split": "train", "clip_key": "2020-0203-114632_003842_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "003842"}, "frames": ["2020-0203-114632_003842_movie_t-3.jpg", "2020-0203-114632_003842_movie_t-2.jpg", "2020-0203-114632_003842_movie_t-1.jpg", "2020-0203-114632_003842_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A gently left-curving urban two-way road has double yellow center lines and dry, clean pavement, with some oncoming traffic present. An orange traffic cone is placed ahead near the centerline, a little to the right of the ego vehicle’s intended path. A white compact car is coming toward the camera in the opposite lane at close distance, following the curve and limiting space near the centerline. Behind it, a boxy silver van continues in the same oncoming lane at a moderate gap. On the left sidewalk, two pedestrians remain beside a small booth and railing, staying off the roadway and not moving to cross. A no-parking sign is also visible on the left side.", "hazard_reasoning": "The main risk is the orange traffic cone positioned ahead of the ego vehicle. Since it creates an obstacle in the travel path, the driver should slow and carefully manoeuvre around it to avoid contact and continue safely."}
{"id": "train_09514", "split": "train", "clip_key": "2020-0227-104226_054546_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054546"}, "frames": ["2020-0227-104226_054546_movie_t-3.jpg", "2020-0227-104226_054546_movie_t-2.jpg", "2020-0227-104226_054546_movie_t-1.jpg", "2020-0227-104226_054546_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "The scene shows an urban two-lane roadway with a solid centerline, smooth pavement, and no median, with moderate traffic in both directions. The ego vehicle is positioned in the left lane near a zebra crossing. A black hatchback is coming toward the ego car in the opposite right lane and continues straight ahead, while more oncoming vehicles are visible farther down the road in the same lane. A pedestrian is standing on the right sidewalk by the crosswalk and is not entering the road.", "hazard_reasoning": "The main hazard is the black hatchback approaching in the opposing lane. If the ego vehicle moves forward, this oncoming car could create a collision risk, so the safe response is to stop immediately."}
{"id": "train_09515", "split": "train", "clip_key": "2020-0204-150838_061834_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_061834_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_061834_movie_t-3_augB1.jpg", "2020-0204-150838_061834_movie_t-2_augB1.jpg", "2020-0204-150838_061834_movie_t-1_augB1.jpg", "2020-0204-150838_061834_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "This is a busy urban multilane roadway beneath an elevated expressway, with clear pavement and slow-moving traffic. A white box truck is traveling directly ahead in the ego lane and limiting forward progress. On the left, a gray van is pulling out from the curb and merging into the ego lane ahead of the ego vehicle. A large dump truck is moving close by in the right adjacent lane at roughly the same slow speed. Blue overhead signs show Chiba, Tatsumi, and Route 357.", "hazard_reasoning": "The main risk is the gray van entering the ego lane in front of the car, using a gap to merge from the left. Because the vehicle is cutting in ahead, the ego driver needs to reduce speed and keep enough space to avoid a potential conflict with the merge."}
{"id": "train_09516", "split": "train", "clip_key": "2020-0226-101332_035714_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "035714"}, "frames": ["2020-0226-101332_035714_movie_t-3.jpg", "2020-0226-101332_035714_movie_t-2.jpg", "2020-0226-101332_035714_movie_t-1.jpg", "2020-0226-101332_035714_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows a dry urban three-lane roadway beneath an elevated structure, with a guardrail along the right side. Traffic in the same direction is dense and moving slowly. A black sedan is directly ahead in the ego lane, inching forward and limiting progress. To the left, a red sedan is merging from the left lane into the ego lane in front of the ego vehicle. Farther left, a large blue truck is also moving slowly beside the merging car.", "hazard_reasoning": "The main risk is the red sedan moving into the ego lane from the left. As it cuts into the gap ahead, it can reduce available space and interfere with the ego vehicle’s path. Slowing down is necessary to keep a safe following distance and lower the chance of a side contact."}
{"id": "train_09517", "split": "train", "clip_key": "2020-0204-103442_072567_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "072567"}, "frames": ["2020-0204-103442_072567_movie_t-3.jpg", "2020-0204-103442_072567_movie_t-2.jpg", "2020-0204-103442_072567_movie_t-1.jpg", "2020-0204-103442_072567_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the white van", "environment_perception": "A two-way urban road with a single lane in each direction and no median leads into an intersection marked by zebra crossings. The roadway looks worn but passable, and traffic is fairly light. A white van with red stripes is coming toward the camera in the oncoming right lane and moves through the intersection close to the ego vehicle’s line of travel. In front of the ego car, a black passenger car continues straight ahead and sets the pace loosely. A second white car trails the van in the opposite lane, while parked vehicles remain along the curbs near the shops and do not intrude into the lanes.", "hazard_reasoning": "The main concern is the white van approaching in the right oncoming lane toward the ego vehicle. Because it is moving close to the path ahead, it could create a need to slow or react if it closes the gap unexpectedly, so the driver should stay attentive and ready to adjust speed."}
{"id": "train_09518", "split": "train", "clip_key": "2020-0203-114632_003842_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "003842"}, "frames": ["2020-0203-114632_003842_movie_t-3.jpg", "2020-0203-114632_003842_movie_t-2.jpg", "2020-0203-114632_003842_movie_t-1.jpg", "2020-0203-114632_003842_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "The scene shows an urban two-way road with two lanes, gently bending left and marked by double yellow center lines on dry, clean pavement. Traffic is light to moderate in the opposite direction. An orange cone is positioned ahead near the centerline, a little to the right of the ego vehicle’s intended path. A white compact car is coming toward the camera in the oncoming lane and is fairly close, following the curve and leaving less room near the centerline. Behind it, a boxy silver van continues in the same lane at a moderate distance. On the left sidewalk, two pedestrians remain beside a small booth and railing without stepping into the road, and a no-parking sign is visible on a pole at the left edge.", "hazard_reasoning": "The key hazard is the orange cone ahead of the ego car. Since it indicates an obstruction on the roadway, the driver needs to steer carefully around it to avoid impact and keep the vehicle moving safely."}
{"id": "train_09519", "split": "train", "clip_key": "2020-0218-103119_006720_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "006720"}, "frames": ["2020-0218-103119_006720_movie_t-3.jpg", "2020-0218-103119_006720_movie_t-2.jpg", "2020-0218-103119_006720_movie_t-1.jpg", "2020-0218-103119_006720_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene is a narrow urban residential road with one lane in each direction, no median, and light traffic. The ego vehicle is in the left lane while a green sedan ahead in the same direction slows and moves slightly toward the center to pass a parked vehicle in the ego lane. The opposite lane appears free of oncoming traffic. A white truck is parked close to the right curb, and bicycles plus other parked items along the left side make the roadway feel tighter.", "hazard_reasoning": "The green sedan is maneuvering around a parked vehicle within the ego lane, which creates the main concern. Because this movement can resemble an abrupt lane change or merge, the safest response is to stay behind it and keep a controlled following distance."}
{"id": "train_09520", "split": "train", "clip_key": "2020-0204-103442_072567_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "072567"}, "frames": ["2020-0204-103442_072567_movie_t-3.jpg", "2020-0204-103442_072567_movie_t-2.jpg", "2020-0204-103442_072567_movie_t-1.jpg", "2020-0204-103442_072567_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the white van", "environment_perception": "A light-to-moderate urban two-way road with one lane in each direction, no center divider, and zebra crossings leads into an intersection. The surface looks worn but passable. A white van with red stripes is coming toward the camera in the opposing right lane and moves through the intersection close to the ego vehicle’s trajectory. A black car continues straight ahead in the ego lane, setting the forward pace, while another white car trails the van in the opposite lane. Parked cars sit along the curbs near the shops without entering the traffic lanes.", "hazard_reasoning": "The main concern is the white van with red stripes approaching in the oncoming lane. Because it is traveling close to the ego vehicle’s path, it could narrow the available space or close in unexpectedly. The driver should watch it closely and be ready to slow or adjust speed if needed."}
{"id": "train_09521", "split": "train", "clip_key": "2020-0203-114632_060724_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "060724"}, "frames": ["2020-0203-114632_060724_movie_t-3.jpg", "2020-0203-114632_060724_movie_t-2.jpg", "2020-0203-114632_060724_movie_t-1.jpg", "2020-0203-114632_060724_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the traffic cones.", "environment_perception": "The scene shows an urban roadway bordered by tall buildings, with the ego vehicle in a single left-side lane that curves right toward a larger road. The surface is dry and clear, with light traffic overall. White diagonal markings, tapering lane paint, and orange-and-white cones in the ego lane show that the lane is closing and must merge right. A dark sedan is traveling on the main lanes to the right in the same direction, while a pedestrian remains on the left sidewalk and does not enter the road. Blue overhead direction signs and guardrails frame the constrained merge area ahead.", "hazard_reasoning": "The cones and striped markings indicate construction or lane closure in the ego vehicle’s lane. Because the lane is ending, the driver needs to steer around the cones and merge safely to avoid driving into the closed section. This makes road construction the main hazard, with a moderate level of risk."}
{"id": "train_09522", "split": "train", "clip_key": "2020-0213-143552_007933_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_007933_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_007933_movie_t-3_augB1.jpg", "2020-0213-143552_007933_movie_t-2_augB1.jpg", "2020-0213-143552_007933_movie_t-1_augB1.jpg", "2020-0213-143552_007933_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "This is a multi-lane urban road with a right-turn lane, dry pavement, and generally light, flowing traffic. A white van ahead in the ego lane is traveling straight at a steady speed. Ahead and slightly left of center, a black sedan is coming out from a concealed left-side intersection and moving toward the ego lane. Vehicles are also traveling normally in the opposite direction on the far side, and there are parked cars along the right curb near the turn bay. Overhead lane signs appear at the next intersection.", "hazard_reasoning": "The main hazard is the black sedan merging into the ego lane from the left-side intersection. Because it is partly hidden and entering your path, it could move into the lane unexpectedly. The safest response is to slow down and give it room to merge."}
{"id": "train_09523", "split": "train", "clip_key": "2020-0204-103442_072567_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "072567"}, "frames": ["2020-0204-103442_072567_movie_t-3.jpg", "2020-0204-103442_072567_movie_t-2.jpg", "2020-0204-103442_072567_movie_t-1.jpg", "2020-0204-103442_072567_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the white van", "environment_perception": "A two-way urban road with a single lane in each direction and no median leads into an intersection marked by zebra crossings. The roadway looks worn but usable, and traffic appears light to moderate. A white van with red stripes is approaching in the oncoming right lane and moves through the intersection close to the ego vehicle’s path. A black passenger car is traveling straight ahead in the ego lane and is setting the pace. A second white car trails behind the van in the opposing lane, while parked cars sit along the curbs near the shops without entering the driving lanes.", "hazard_reasoning": "The main concern is the white van with red stripes coming toward the ego vehicle in the right lane. Because it is approaching close to the ego path, it could create a conflict or require a quick response, so the driver should stay alert and be ready to slow down if needed."}
{"id": "train_09524", "split": "train", "clip_key": "2020-0131-135401_023097_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "023097"}, "frames": ["2020-0131-135401_023097_movie_t-3.jpg", "2020-0131-135401_023097_movie_t-2.jpg", "2020-0131-135401_023097_movie_t-1.jpg", "2020-0131-135401_023097_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around construction cone", "environment_perception": "A divided urban roadway with multiple lanes shows light traffic moving in the same direction, while a temporary work zone blocks the left side. Red barriers and cones edge the left curb, and two yellow arrow boards on the road indicate traffic should merge right. A work truck is stopped ahead on the left inside the fenced-off area, and an orange cone-like object lies to the left of the ego vehicle due to the construction setup, leaving that side blocked. A road worker ahead near the cones on the right side of the ego lane is walking along the taper and could come close to the travel path. Farther ahead, a dark car continues straight through the narrowed lane at low speed, limiting the flow.", "hazard_reasoning": "The main risk is the orange cone-like object positioned on the left side of the ego car from the construction activity. It shows the lane is narrowed by barriers, so the driver needs to steer around it to avoid contact."}
{"id": "train_09525", "split": "train", "clip_key": "2020-0212-102546_003043_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "003043"}, "frames": ["2020-0212-102546_003043_movie_t-3.jpg", "2020-0212-102546_003043_movie_t-2.jpg", "2020-0212-102546_003043_movie_t-1.jpg", "2020-0212-102546_003043_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of turning truck", "environment_perception": "The scene shows a multi-lane urban road leading into a broad signalized intersection, with a raised median on the right and dry, even pavement. Traffic is moderate and moving along. The ego vehicle is in the left lane. A black hatchback ahead is slowing near the crosswalk and sets the pace. In the lane to the left, a white truck is turning left at the intersection. Farther ahead and to the right, a larger white box truck proceeds straight through the junction in the neighboring lane without influencing the ego path. Oncoming traffic beyond the median continues normally.", "hazard_reasoning": "The main concern is the white truck in the lane left of the ego vehicle as it turns left and changes direction. Because of that maneuver, it could drift into the ego lane or slow in an unexpected way. This creates a merge-related conflict, so caution is needed to reduce collision risk."}
{"id": "train_09526", "split": "train", "clip_key": "2020-0210-101957_078186_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "078186"}, "frames": ["2020-0210-101957_078186_movie_t-3.jpg", "2020-0210-101957_078186_movie_t-2.jpg", "2020-0210-101957_078186_movie_t-1.jpg", "2020-0210-101957_078186_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is a quiet suburban two-way street with one lane in each direction, bordered by railings and block walls. The road surface looks dry and clear, with light traffic and no oncoming vehicles. A brown truck is directly ahead, coming from a side street and turning left into the ego lane. The street bends through the neighborhood, and nearby buildings limit visibility around the curve. A yellow winding-road sign stands on the left, and a solid yellow centerline separates the directions. No pedestrians, cyclists, parked cars, or traffic signals are present.", "hazard_reasoning": "The brown truck is merging into the ego lane while turning left from the side street, creating a lane-change conflict directly ahead. This makes the truck the main hazard, and the driver should reduce speed to keep a safe gap and avoid a collision."}
{"id": "train_09527", "split": "train", "clip_key": "2020-0204-150838_061802_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0204-150838_061802_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0204-150838_061802_movie_t-3_augB1.jpg", "2020-0204-150838_061802_movie_t-2_augB1.jpg", "2020-0204-150838_061802_movie_t-1_augB1.jpg", "2020-0204-150838_061802_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "This is a busy urban multilane roadway beneath an elevated expressway, with smooth pavement and no visible median. Traffic is dense and moving slowly. A large white box truck is directly ahead in the ego lane and is advancing at a crawl. From the left, a gray van moves into the ego lane and comes in ahead of the ego vehicle, taking part of its path. On the right, a dark heavy truck and a silver hatchback travel slowly alongside, leaving little space to maneuver. An overhead blue sign indicates directions toward Chiba and Tatsumi.", "hazard_reasoning": "The main risk is the gray van merging from the left into the ego lane directly ahead of the car. Since it is entering the same lane and closing into the path, there is a clear lane-change merge hazard. The appropriate response is to reduce speed and keep a safe following gap to avoid contact."}
{"id": "train_09528", "split": "train", "clip_key": "2020-0203-114632_060724_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "060724"}, "frames": ["2020-0203-114632_060724_movie_t-3.jpg", "2020-0203-114632_060724_movie_t-2.jpg", "2020-0203-114632_060724_movie_t-1.jpg", "2020-0203-114632_060724_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the traffic cones.", "environment_perception": "The scene is urban, with tall buildings beside a smooth, dry roadway. The ego vehicle is in a single left-side lane that bends right toward a larger arterial road. A concrete barrier separates the main lanes on the right, and traffic looks light. White diagonal striping, taper markings, and orange-and-white cones in the ego lane show that the lane is narrowing and ending into a merge. A dark sedan is moving along the main lanes to the right in the same direction, which may affect the merge. A pedestrian is visible on the left sidewalk near the buildings but is not moving toward the road. Blue overhead direction signs and guardrails frame the constrained merge area ahead.", "hazard_reasoning": "The cones and white striped markings in the ego lane indicate roadwork and that the current lane is closing. The main risk is the driver continuing into the blocked section instead of following the merge path. The safest response is to maneuver around the traffic cones and stay clear of the closed lane."}
{"id": "train_09529", "split": "train", "clip_key": "2020-0203-114632_005546_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005546"}, "frames": ["2020-0203-114632_005546_movie_t-3.jpg", "2020-0203-114632_005546_movie_t-2.jpg", "2020-0203-114632_005546_movie_t-1.jpg", "2020-0203-114632_005546_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around white truck", "environment_perception": "This is an urban two-way street with one lane in each direction, bending left and marked by double yellow center lines. The road surface is dry and unobstructed, but the left side has a coned-off work area with a large crane truck that squeezes the ego lane. A city bus is stopped at the right curb in the opposing direction, and a white truck is visible farther ahead in the oncoming right lane while the ego vehicle keeps moving forward after clearing the roadside obstruction.", "hazard_reasoning": "The key hazard is the white truck coming toward the ego vehicle in the opposite lane. Since the ego car is continuing along its lane after passing the work-zone obstruction, the approaching truck creates an immediate oncoming conflict. The driver should steer cautiously and maintain awareness to avoid a collision while staying clear of the oncoming vehicle."}
{"id": "train_09530", "split": "train", "clip_key": "2020-0129-105040_001149_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "001149"}, "frames": ["2020-0129-105040_001149_movie_t-3.jpg", "2020-0129-105040_001149_movie_t-2.jpg", "2020-0129-105040_001149_movie_t-1.jpg", "2020-0129-105040_001149_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the merging vehicle", "environment_perception": "A city arterial with multiple lanes, smooth pavement, and slow-moving traffic passes between mid-rise buildings. A gray utility van ahead comes in from the right side of the ego vehicle and merges directly into the lane ahead, tightening the space in front. A silver van remains in the adjacent right lane a little farther ahead and continues straight, while a white hatchback in the next lane ahead-left creeps forward with the traffic queue.", "hazard_reasoning": "The gray van is shifting from the right into the lane directly in front of the ego car. Because it is entering your path and shrinking the following gap, it creates a merge hazard and calls for yielding to maintain safe distance."}
{"id": "train_09531", "split": "train", "clip_key": "2020-0227-104226_033838_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0227-104226_033838_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0227-104226_033838_movie_t-3_augB1.jpg", "2020-0227-104226_033838_movie_t-2_augB1.jpg", "2020-0227-104226_033838_movie_t-1_augB1.jpg", "2020-0227-104226_033838_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Follow the vehicle ahead", "environment_perception": "A narrow urban roadway with smooth pavement and no center divider continues straight toward a signalized intersection, with moderate traffic present. Ahead in the ego lane, a white box truck is moving right and merging into the adjacent right lane, briefly setting the pace for the ego vehicle. On the right side, a small silver hatchback is edging forward close to the lane marking, tightening the space where the truck is moving. Another truck is farther ahead in the right lane near the crosswalk, adding to the slow-moving traffic.", "hazard_reasoning": "The main concern is the white truck shifting from the ego lane into the right lane directly ahead. This lane change can close the available gap and slow progress, so the safest response is to stay behind it, keep a proper following distance, and be ready for its movement."}
{"id": "train_09532", "split": "train", "clip_key": "titan_clip_104_000498_movie", "source": {"subset": "titan", "scenario": "clip_104", "frame": "000498"}, "frames": ["titan_clip_104_000498_movie_t-3.jpg", "titan_clip_104_000498_movie_t-2.jpg", "titan_clip_104_000498_movie_t-1.jpg", "titan_clip_104_000498_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cone", "environment_perception": "The scene shows a narrow urban two-way road with one lane in each direction and no median, with smooth pavement and little traffic. Ahead on the left, a construction flagger is standing near tape and a row of orange cones, narrowing the usable lane and slowing the ego vehicle's path. A work truck is stopped farther ahead on the left inside the coned-off area, leaving less room to pass. A pedestrian is also moving toward the camera along the left edge near the cones and could enter the vehicle's path.", "hazard_reasoning": "An orange traffic cone is positioned on the left side of the roadway, creating a construction-related obstacle. The driver should steer around it carefully to avoid contact and continue through the work zone safely."}
{"id": "train_09533", "split": "train", "clip_key": "2020-0203-114632_005546_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005546"}, "frames": ["2020-0203-114632_005546_movie_t-3.jpg", "2020-0203-114632_005546_movie_t-2.jpg", "2020-0203-114632_005546_movie_t-1.jpg", "2020-0203-114632_005546_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around white truck", "environment_perception": "A two-way urban road with one lane in each direction bends left and is marked by double yellow center lines. The road surface is dry and unobstructed, but the left side has a coned-off work area with a large crane truck, squeezing the ego lane. A city bus is parked at the curb on the right in the opposite direction, and farther ahead a white truck is coming toward the ego vehicle while it proceeds past the roadside obstruction.", "hazard_reasoning": "The main risk is the white truck approaching head-on in the opposing lane. Since the ego car is still traveling in its lane after passing the roadside blockage, the driver needs to stay alert and move carefully to avoid a conflict with the oncoming truck."}
{"id": "train_09534", "split": "train", "clip_key": "titan_clip_104_000498_movie", "source": {"subset": "titan", "scenario": "clip_104", "frame": "000498"}, "frames": ["titan_clip_104_000498_movie_t-3.jpg", "titan_clip_104_000498_movie_t-2.jpg", "titan_clip_104_000498_movie_t-1.jpg", "titan_clip_104_000498_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cone", "environment_perception": "The scene is a narrow urban two-way road with one lane in each direction and no median, where traffic is light and movement is constrained by a work zone ahead. Slightly ahead on the left in the ego lane, a construction flagger stands next to tape and a row of orange cones, guiding vehicles through a narrowed path. Farther ahead on the left, a work truck is stopped inside the coned-off area, taking up part of the available space. A pedestrian is also walking toward the camera near the cones on the left edge and could drift into the ego vehicle’s path.", "hazard_reasoning": "An orange traffic cone is positioned on the left side of the road. The driver needs to steer carefully around it to prevent contact and pass safely through the construction area."}
{"id": "train_09535", "split": "train", "clip_key": "2020-0214-102601_078931_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "078931"}, "frames": ["2020-0214-102601_078931_movie_t-3.jpg", "2020-0214-102601_078931_movie_t-2.jpg", "2020-0214-102601_078931_movie_t-1.jpg", "2020-0214-102601_078931_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Start moving", "environment_perception": "The scene shows a narrow urban two-way road with one lane in each direction, lined by storefronts, with a green-painted shoulder on the left, an orange centerline, and slow traffic. Ahead in the ego lane, a gray SUV is beginning to move forward as a white box truck farther up also inches ahead, causing the SUV to follow behind it. The white truck keeps creeping along near the roadside market and limits the flow. On the left by the shop, a blue compact car is stopped in the shoulder close to the lane and appears ready to pull out into the ego path.", "hazard_reasoning": "The key risk is the blue car on the left shoulder potentially merging into the ego lane, while the gray SUV ahead is also moving with the queue. The safest action is to start moving and maintain a proper following gap so traffic can continue smoothly."}
{"id": "train_09536", "split": "train", "clip_key": "2020-0203-114632_005546_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005546"}, "frames": ["2020-0203-114632_005546_movie_t-3.jpg", "2020-0203-114632_005546_movie_t-2.jpg", "2020-0203-114632_005546_movie_t-1.jpg", "2020-0203-114632_005546_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around white truck", "environment_perception": "The scene shows an urban two-way roadway with one lane in each direction and a gentle left curve, marked by double yellow center lines. The pavement is dry and unobstructed, but the left side has a coned-off work area with a large crane truck encroaching on and narrowing the ego lane. A city bus is stopped at the curb on the right in the opposite direction, and a white truck is visible farther ahead in the right oncoming lane as the ego vehicle continues past the roadside obstruction.", "hazard_reasoning": "The key risk is the white truck traveling toward the ego vehicle in the opposing lane. Since the ego car is still proceeding through the narrowed lane after the obstruction, the driver needs to keep clear of the approaching truck and maneuver cautiously to avoid a collision."}
{"id": "train_09537", "split": "train", "clip_key": "2020-0227-104226_052506_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "052506"}, "frames": ["2020-0227-104226_052506_movie_t-3.jpg", "2020-0227-104226_052506_movie_t-2.jpg", "2020-0227-104226_052506_movie_t-1.jpg", "2020-0227-104226_052506_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows a dry urban two-way street with one lane in each direction and a yellow centerline. The ego vehicle is moving forward in the left lane without a median. Ahead in the same lane, a gray sedan is easing off speed as another vehicle merges into its path, which limits the ego vehicle’s progress. An oncoming car remains in the opposite lane and does not interfere with travel. No other clear warnings are present.", "hazard_reasoning": "The key risk is the merge ahead, which is causing the gray sedan in front to slow down. Because the lead vehicle is decelerating due to that lane-change merge, the ego vehicle should also reduce speed and keep a safe gap to avoid a rear-end collision."}
{"id": "train_09538", "split": "train", "clip_key": "2020-0204-150838_053390_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "053390"}, "frames": ["2020-0204-150838_053390_movie_t-3.jpg", "2020-0204-150838_053390_movie_t-2.jpg", "2020-0204-150838_053390_movie_t-1.jpg", "2020-0204-150838_053390_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the merging vehicle", "environment_perception": "The scene shows a dry, smooth urban three-lane road beneath elevated expressway structures with light to moderate traffic moving steadily. A blue hatchback directly ahead in the ego lane is moving left and merging into the adjacent lane. On the right, a white box truck slightly ahead keeps a straight course in the outer lane, running parallel to the ego vehicle while the hatchback changes lanes. A smaller truck is visible farther ahead in the leftmost lane and does not affect the ego vehicle.", "hazard_reasoning": "The main concern is the blue hatchback shifting left out of the ego lane. Because it is actively merging, it could enter the ego vehicle's path unexpectedly, creating a collision risk. The situation calls for caution while the merge completes."}
{"id": "train_09539", "split": "train", "clip_key": "2020-0206-142535_005927_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0206-142535_005927_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0206-142535_005927_movie_t-3_augB1.jpg", "2020-0206-142535_005927_movie_t-2_augB1.jpg", "2020-0206-142535_005927_movie_t-1_augB1.jpg", "2020-0206-142535_005927_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "This is a narrow two-way urban street with one lane in each direction, bordered by mid-rise buildings. The road surface is clear, and traffic is light, while construction barriers and cones along the left curb reduce the shoulder. A small white flatbed truck is ahead in the ego lane as we follow behind it. From the opposite direction, a pink bus moves into the ego lane toward the camera to get around an obstruction, passing by a parked vehicle on the right. A black van is parked along the right curb, narrowing the oncoming side and contributing to the bus's maneuver.", "hazard_reasoning": "The main risk is the pink bus entering the ego lane and heading toward the ego vehicle while trying to pass the parked vehicle on the right. This unexpected lane encroachment creates an immediate collision danger, so stopping promptly is necessary."}
{"id": "train_09540", "split": "train", "clip_key": "2020-0203-114632_005087_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005087"}, "frames": ["2020-0203-114632_005087_movie_t-3.jpg", "2020-0203-114632_005087_movie_t-2.jpg", "2020-0203-114632_005087_movie_t-1.jpg", "2020-0203-114632_005087_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around cones and worker", "environment_perception": "This is an urban two-way road with one lane in each direction, curving ahead. The roadway is narrowed by a work area on the left, which slows traffic and squeezes the available space. In the ego lane, a construction worker is positioned among cones and appears to be controlling alternating traffic. In the opposite lane, a city bus is coming through the cone gap, while a white box truck farther right also moves forward at low speed near the crosswalk, leaving even less clearance. A utility crane truck is parked ahead on the left with cones and equipment extending into the lane, marking the main obstruction.", "hazard_reasoning": "The key hazard is the construction zone directly ahead. Because cones, the worker, and work vehicles reduce the usable lane space, the driver needs to proceed carefully through the area to avoid contact."}
{"id": "train_09541", "split": "train", "clip_key": "2020-0213-143552_006481_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "006481"}, "frames": ["2020-0213-143552_006481_movie_t-3.jpg", "2020-0213-143552_006481_movie_t-2.jpg", "2020-0213-143552_006481_movie_t-1.jpg", "2020-0213-143552_006481_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the gray truck", "environment_perception": "A straight urban arterial with two to three lanes in each direction is visible, divided by painted lane markings on dry, clear pavement, with light to moderate traffic. In the left curb lane ahead, a dark box truck is stopped close to the sidewalk and partly blocks that lane. Further ahead in the same direction, a small truck and a larger truck continue moving away steadily in the inner lanes. On the opposite side, a gray truck is approaching the ego vehicle in the right-side oncoming lane, with a few other cars also coming toward the camera.", "hazard_reasoning": "The main concern is the gray truck heading toward the ego vehicle from the opposite direction on the right side of the road. Its close presence in the adjacent lane means a sudden drift or unexpected merge would create a collision risk, so the driver should stay alert."}
{"id": "train_09542", "split": "train", "clip_key": "2020-0131-103016_027323_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "027323"}, "frames": ["2020-0131-103016_027323_movie_t-3.jpg", "2020-0131-103016_027323_movie_t-2.jpg", "2020-0131-103016_027323_movie_t-1.jpg", "2020-0131-103016_027323_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "This is an urban multi-lane roadway with smooth pavement, no visible center divider, and buildings and trees along the sides. Traffic is moving slowly to moderately. A blue and white truck from the right lane is edging left into the ego lane ahead of the car, taking the available gap and becoming the new lead vehicle. A silver sedan is already traveling ahead in the ego lane at low speed, and the merge further slows the flow. Near the left curb by the crosswalk, a small blue truck is parked beside two orange cones, which slightly constrains the left side of the road.", "hazard_reasoning": "The main hazard is the blue and white truck merging from the right lane into the ego lane directly ahead. Since it is cutting into the lane in front of the ego vehicle, the driver needs to yield and let the truck settle in safely."}
{"id": "train_09543", "split": "train", "clip_key": "2020-0214-145407_013620_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "013620"}, "frames": ["2020-0214-145407_013620_movie_t-3.jpg", "2020-0214-145407_013620_movie_t-2.jpg", "2020-0214-145407_013620_movie_t-1.jpg", "2020-0214-145407_013620_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is an urban multilane roadway with smooth asphalt and no central median, bordered by office buildings. Traffic is moderate, with a slow-moving line in the rightmost lane. Ahead-right, a white van is drifting left out of the ego lane into the adjacent left lane, partially taking the space in front while merging. A dark minivan is farther ahead in that left lane and continues straight at a steady speed, effectively leading the flow in front of the merging van. More vehicles on the right are creeping toward the intersection, so overall movement remains slow. A broad zebra crossing is visible across the road at the junction.", "hazard_reasoning": "The main hazard is the white van moving left from the ego lane into the left lane. This lane-change/merge can interfere with the ego vehicle’s path, so slowing down and keeping a safe following distance is the appropriate response."}
{"id": "train_09544", "split": "train", "clip_key": "2020-0203-114632_005087_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005087"}, "frames": ["2020-0203-114632_005087_movie_t-3.jpg", "2020-0203-114632_005087_movie_t-2.jpg", "2020-0203-114632_005087_movie_t-1.jpg", "2020-0203-114632_005087_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around cones and worker", "environment_perception": "This is an urban two-way road with a single lane in each direction, bending ahead. The roadway is clear, but movement is restricted by a narrow construction area that squeezes the left-side lane. In front of the ego vehicle, a worker is standing among traffic cones and managing alternating passage. In the opposing lane, a city bus is coming through the opening beyond the cones, passing first through the bottleneck. Nearer on the right, a white box truck is rolling forward slowly in the oncoming lane near the crosswalk, which reduces available space even more. A utility crane truck is parked ahead on the left, with cones and equipment extending into the lane and forming the main blockage.", "hazard_reasoning": "The main hazard is the active road construction directly ahead. The driver needs to proceed carefully around the cones and the worker to prevent a collision."}
{"id": "train_09545", "split": "train", "clip_key": "2020-0213-143552_006481_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "006481"}, "frames": ["2020-0213-143552_006481_movie_t-3.jpg", "2020-0213-143552_006481_movie_t-2.jpg", "2020-0213-143552_006481_movie_t-1.jpg", "2020-0213-143552_006481_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the gray truck", "environment_perception": "A straight urban multilane road stretches ahead, with two to three lanes in each direction marked only by painted lines, and the dry surface appears clear. In the left curb lane ahead, a dark box truck is stopped near the sidewalk and partly intrudes into the lane, reducing available width. Farther up in the same direction, a small truck and a larger truck continue moving away steadily in the inner lanes. On the opposite side, a gray truck is approaching the ego vehicle in the right-side oncoming lane, with other oncoming cars behind it.", "hazard_reasoning": "The main concern is the gray truck coming toward the ego vehicle on the opposite side. Because it is close in the adjacent traffic stream, any unexpected drift or lane movement could create a collision risk if the driver does not stay attentive."}
{"id": "train_09546", "split": "train", "clip_key": "2020-0206-101736_028112_movie", "source": {"subset": "drama", "scenario": "2020-0206-101736", "frame": "028112"}, "frames": ["2020-0206-101736_028112_movie_t-3.jpg", "2020-0206-101736_028112_movie_t-2.jpg", "2020-0206-101736_028112_movie_t-1.jpg", "2020-0206-101736_028112_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield to merging vehicle", "environment_perception": "This is an urban road with two lanes traveling in the ego direction and no physical divider. The pavement is clear, but traffic is slow and bunched up. A white SUV is ahead-left, straddling the lane line and stopped as it edges into the ego lane from the left in heavy congestion. A white sedan directly in front in the ego lane is also creeping and then pausing, limiting the ego vehicle’s forward progress. Several more vehicles are lined up farther ahead in both same-direction lanes. No obvious signals are visible, and there are no pedestrians or roadside obstacles entering the lane.", "hazard_reasoning": "The main hazard is the white SUV on the left, which is stopped while merging into the ego lane because of the traffic jam ahead. Since it is already intruding into the lane, it creates an immediate collision risk and the ego vehicle should yield to avoid contact."}
{"id": "train_09547", "split": "train", "clip_key": "2020-0225-102455_032366_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "032366"}, "frames": ["2020-0225-102455_032366_movie_t-3.jpg", "2020-0225-102455_032366_movie_t-2.jpg", "2020-0225-102455_032366_movie_t-1.jpg", "2020-0225-102455_032366_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging vehicles", "environment_perception": "The scene shows a busy urban road with multiple same-direction lanes between tall buildings on clear pavement, including a painted chevron divider that creates a right-turn lane. Traffic is moderate and moving steadily overall. A black van ahead of the ego vehicle is edging right into the adjacent turn lane, in line with the right-turn-only markings. In the distance, a city bus and a box truck are moving slowly in the right-side lanes, leaving tighter spacing there. Another dark van farther ahead on the left continues straight without shifting lanes.", "hazard_reasoning": "The key hazard is the black van drifting from the ego lane into the right lane, which is a lane-change/merge maneuver. This lateral movement could affect the ego vehicle’s path, so the driver should stay alert and prepare for the van’s position change."}
{"id": "train_09548", "split": "train", "clip_key": "titan_clip_1379_000396_movie", "source": {"subset": "titan", "scenario": "clip_1379", "frame": "000396"}, "frames": ["titan_clip_1379_000396_movie_t-3.jpg", "titan_clip_1379_000396_movie_t-2.jpg", "titan_clip_1379_000396_movie_t-1.jpg", "titan_clip_1379_000396_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around cone carefully", "environment_perception": "A narrow urban roadway without a centerline passes between buildings and a viaduct, with patched wet pavement and little traffic around. On the left, a large cement mixer truck at a construction area extends into the lane and reduces the usable space for the ego vehicle. Several pedestrians are visible ahead near the center of the road, walking along or across the lane, which could place them in the vehicle’s path. A traffic cone is also positioned in the lane on the left, while more cones mark both sides of the work zone, making the passage clearly constricted.", "hazard_reasoning": "The most immediate issue is the traffic cone sitting in the roadway on the left. It is a physical obstacle that could be hit if the driver does not adjust course, so the vehicle should pass it with caution."}
{"id": "train_09549", "split": "train", "clip_key": "2020-0213-143552_006481_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "006481"}, "frames": ["2020-0213-143552_006481_movie_t-3.jpg", "2020-0213-143552_006481_movie_t-2.jpg", "2020-0213-143552_006481_movie_t-1.jpg", "2020-0213-143552_006481_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the gray truck", "environment_perception": "A straight urban arterial with two to three lanes in each direction is marked by painted lane lines, and the road surface is dry and clear. In the left curb lane ahead, a dark box truck is stopped near the sidewalk and partly encroaches into the lane, reducing available space. Further ahead in the same direction, a small truck and a larger truck continue moving away steadily in the inner lanes. On the opposite side, a gray truck is approaching the ego vehicle in its lane on the right side of the road, with other oncoming traffic behind it.", "hazard_reasoning": "The main concern is the gray truck coming toward the ego vehicle on the opposite side. Its closeness in the adjacent traffic stream means any drift or unexpected movement could create a collision risk, so it should be treated as a medium-level hazard."}
{"id": "train_09550", "split": "train", "clip_key": "titan_clip_1379_000396_movie", "source": {"subset": "titan", "scenario": "clip_1379", "frame": "000396"}, "frames": ["titan_clip_1379_000396_movie_t-3.jpg", "titan_clip_1379_000396_movie_t-2.jpg", "titan_clip_1379_000396_movie_t-1.jpg", "titan_clip_1379_000396_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around cone carefully", "environment_perception": "The scene shows a narrow urban road without a centerline, bordered by buildings and a viaduct. The pavement is patched and wet, and overall traffic is sparse with no moving vehicles close by. On the left, a large cement mixer truck is parked at a construction area and encroaches into the lane, reducing the available space for the ego vehicle. Ahead, several pedestrians near the center of the roadway are walking along and across the lane, creating potential interference with the driving path. A traffic cone is placed in the road on the left, while more cones are arranged along both sides of the work zone, highlighting the tight, restricted corridor.", "hazard_reasoning": "The most immediate hazard is the traffic cone positioned on the left side of the lane. It is an obstacle that could be hit and may affect vehicle stability or lead to a collision, so the driver should pass it with caution."}
{"id": "train_09551", "split": "train", "clip_key": "2020-0205-152530_041470_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "041470"}, "frames": ["2020-0205-152530_041470_movie_t-3.jpg", "2020-0205-152530_041470_movie_t-2.jpg", "2020-0205-152530_041470_movie_t-1.jpg", "2020-0205-152530_041470_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the SUV cutting in", "environment_perception": "The scene shows a straight urban arterial with multiple lanes, smooth roadway, and tall buildings along both sides; a bollard-separated curb lane on the right carries slower traffic. A black SUV on the left is moving sideways into the ego lane ahead, merging across from the adjacent lane and narrowing the available space. A silver microvan remains in front in the ego lane, continuing forward and then slowing slightly as the gap tightens. Cars in the protected right lane are queued and moving slowly behind the divider, staying clear of the ego vehicle's path.", "hazard_reasoning": "The main hazard is the black SUV merging into the ego lane from the left. Because it is moving into the travel path ahead, it can take away space and create a collision risk, so this lane-change merge should be monitored closely."}
{"id": "train_09552", "split": "train", "clip_key": "2020-0206-142535_005927_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "005927"}, "frames": ["2020-0206-142535_005927_movie_t-3.jpg", "2020-0206-142535_005927_movie_t-2.jpg", "2020-0206-142535_005927_movie_t-1.jpg", "2020-0206-142535_005927_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "The scene is a narrow urban two-way street with one lane in each direction, bordered by mid-rise buildings. The road surface is clear, and traffic is sparse. Construction barriers and cones line the left curb, reducing the shoulder. A small white flatbed truck is directly ahead in the ego lane, while an oncoming pink bus moves toward the camera and into the ego lane to get around an obstruction. A black van is parked along the right curb, tightening the available space and contributing to the bus's maneuver.", "hazard_reasoning": "The main risk is the pink bus crossing into the ego lane and heading toward the ego vehicle because of the parked vehicle on the right. This unexpected merge creates an immediate collision threat, so the driver should stop promptly."}
{"id": "train_09553", "split": "train", "clip_key": "2020-0203-114632_003320_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "003320"}, "frames": ["2020-0203-114632_003320_movie_t-3.jpg", "2020-0203-114632_003320_movie_t-2.jpg", "2020-0203-114632_003320_movie_t-1.jpg", "2020-0203-114632_003320_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be cautious of the white truck ahead", "environment_perception": "A light-traffic urban two-way road with one lane in each direction and no center divider extends ahead, with the ego vehicle nearing a zebra crossing on smooth pavement. An oncoming gray van is approaching straight through the crossing in the opposite lane while remaining in lane. Behind it in the same oncoming lane, a white truck is also traveling toward the ego car. A pedestrian is visible on the right sidewalk near the crossing, but stays off the roadway.", "hazard_reasoning": "The white truck ahead in the right/oncoming lane is the main concern because it is moving toward the ego vehicle. Its motion leaves open the possibility of a lane intrusion or cut-in, so the safest response is to watch its position closely and prepare for reduced clearance."}
{"id": "train_09554", "split": "train", "clip_key": "2020-0203-114632_003320_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "003320"}, "frames": ["2020-0203-114632_003320_movie_t-3.jpg", "2020-0203-114632_003320_movie_t-2.jpg", "2020-0203-114632_003320_movie_t-1.jpg", "2020-0203-114632_003320_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be cautious of the white truck ahead", "environment_perception": "A light-traffic urban two-way road with one lane in each direction and no center divider extends ahead as the ego vehicle nears a zebra crossing. In the opposing lane, a gray van is driving straight toward the ego vehicle while remaining in lane, and a white truck is also approaching farther ahead in that same lane. A pedestrian is visible on the right sidewalk near the crossing, but does not enter the road.", "hazard_reasoning": "The white truck is the main concern because it is an oncoming vehicle traveling toward the ego car in the opposite lane. Its approach means the driver should keep watching its path and be ready in case it closes distance quickly or shifts position."}
{"id": "train_09555", "split": "train", "clip_key": "2020-0131-103016_016623_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "016623"}, "frames": ["2020-0131-103016_016623_movie_t-3.jpg", "2020-0131-103016_016623_movie_t-2.jpg", "2020-0131-103016_016623_movie_t-1.jpg", "2020-0131-103016_016623_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "This is an urban multilane roadway with three lanes moving in the same direction, bordered by midrise buildings. The surface looks clear, but traffic is dense and moving slowly. A gray van in front of the ego vehicle is stopped in the lane, apparently waiting to merge into the adjacent right lane, which is delaying the ego car. In that right lane, a white van is traveling alongside and continuing ahead, leaving no opening for the gray van. On the left, a sedan and a small truck are also inching forward, so the whole scene remains slow. Overhead traffic signals are visible, though their indication cannot be read.", "hazard_reasoning": "The main concern is the gray van directly ahead, which has stopped while trying to find a gap to move right. Because it is already blocking the ego lane and may merge suddenly, the ego vehicle could need to brake hard. The safest response is to stop and keep a proper following distance."}
{"id": "train_09556", "split": "train", "clip_key": "2020-0131-103016_027323_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-103016_027323_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-103016_027323_movie_t-3_augB1.jpg", "2020-0131-103016_027323_movie_t-2_augB1.jpg", "2020-0131-103016_027323_movie_t-1_augB1.jpg", "2020-0131-103016_027323_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "An urban multi-lane street with smooth pavement and no median passes offices and trees, with traffic moving at a slow-to-moderate pace. A blue and white truck from the right lane ahead is signaling and shifting left into the ego lane, moving directly in front of the ego car and becoming the lead vehicle. A silver sedan already traveling ahead in the ego lane continues straight at low speed and slows the flow as the truck merges. On the left curb near the crosswalk, a small blue truck is parked beside two orange cones, which slightly tightens the left side of the lane.", "hazard_reasoning": "The main hazard is the blue and white truck merging from the right lane into the ego lane ahead. Because it is moving into the ego vehicle’s path, the driver needs to yield and allow the merge to complete safely."}
{"id": "train_09557", "split": "train", "clip_key": "2020-0131-135401_008868_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008868"}, "frames": ["2020-0131-135401_008868_movie_t-3.jpg", "2020-0131-135401_008868_movie_t-2.jpg", "2020-0131-135401_008868_movie_t-1.jpg", "2020-0131-135401_008868_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of construction post ahead", "environment_perception": "A two-way urban road with no median and a worn but usable surface narrows next to a work area, causing traffic to move slowly. The right shoulder is occupied by road construction, identified by orange cones and posts, along with machinery and parked work trucks that partially constrict the lane. A white box truck ahead in the same lane is moving carefully past the barriers, which slows the ego vehicle as well. At the left curb by the crosswalk, several pedestrians are waiting and looking toward the roadway, ready to cross when there is room. Near the right edge of the lane, a construction worker is standing and guiding vehicles around the site, keeping traffic in a single-file path.", "hazard_reasoning": "The main concern is the construction activity and the orange construction post on the right side of the road. This can narrow the driving space and affect both lane position and visibility, so the driver should proceed cautiously."}
{"id": "train_09558", "split": "train", "clip_key": "titan_clip_79_000576_movie", "source": {"subset": "titan", "scenario": "clip_79", "frame": "000576"}, "frames": ["titan_clip_79_000576_movie_t-3.jpg", "titan_clip_79_000576_movie_t-2.jpg", "titan_clip_79_000576_movie_t-1.jpg", "titan_clip_79_000576_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "The scene is an urban residential T-junction on a narrow two-way local road with light traffic and a smooth surface. The ego vehicle is stopped at the marked stop line before the intersection. A white van comes in from the right and turns across the junction into the right lane ahead. On the near right corner, a pedestrian stands close to the roadway beside the van and could step into the crossing area. A red stop sign and a no-parking sign are visible on the left.", "hazard_reasoning": "The main concern is the white van turning in from the right and merging into the right lane. Because it could move into your path without much warning, the safe response is to stop and avoid a possible collision."}
{"id": "train_09559", "split": "train", "clip_key": "2020-0131-135401_008868_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008868"}, "frames": ["2020-0131-135401_008868_movie_t-3.jpg", "2020-0131-135401_008868_movie_t-2.jpg", "2020-0131-135401_008868_movie_t-1.jpg", "2020-0131-135401_008868_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of construction post ahead", "environment_perception": "This is an urban two-way road with no median and worn pavement, narrowed by an active work zone, causing traffic to move slowly in the leftward direction. On the right, orange posts and cones mark road construction, while machinery and parked work trucks occupy the shoulder and partly constrict the lane. A white box truck ahead in the ego lane is creeping forward past the barriers, which further slows travel. At the left curb by the crosswalk, a small group of pedestrians is waiting to cross. Near the right edge of the lane, a construction worker is standing and guiding vehicles through the site.", "hazard_reasoning": "The main hazard is the construction activity and the orange construction post on the right side of the road. This can alter lane position and reduce visibility, so the driver should stay alert and pass cautiously."}
{"id": "train_09560", "split": "train", "clip_key": "2020-0228-150133_002038_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "002038"}, "frames": ["2020-0228-150133_002038_movie_t-3.jpg", "2020-0228-150133_002038_movie_t-2.jpg", "2020-0228-150133_002038_movie_t-1.jpg", "2020-0228-150133_002038_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "This is an urban two-way road with a single lane in each direction and a painted centerline. The surface looks uneven near an active work area, and traffic is moving slowly. A white box truck ahead in the ego lane is coming to a stop as the lane tightens. To the right, an oncoming white van travels close to the centerline, reducing available space. On the left, road work is present with a worker beside traffic cones and a parked truck, and the setup reaches toward the lane. Parked vehicles are also lined up along the right curb.", "hazard_reasoning": "The main hazard is the construction zone on the left, where the worker, cones, and parked truck intrude into the driving path. The vehicle should pass through this area with caution to avoid striking the work zone or the worker."}
{"id": "train_09561", "split": "train", "clip_key": "2020-0205-152530_003732_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "003732"}, "frames": ["2020-0205-152530_003732_movie_t-3.jpg", "2020-0205-152530_003732_movie_t-2.jpg", "2020-0205-152530_003732_movie_t-1.jpg", "2020-0205-152530_003732_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of the gray van merging", "environment_perception": "The scene shows a dry, straight urban two-lane road with a centerline and relatively light traffic. A gray van approaching from the right-side lane moves over the centerline into the ego lane while going around a parked vehicle on its side of the road, then begins to straighten out. The parked car near the curb is the reason that lane is narrowed. A pedestrian is visible on the right sidewalk by the shops, walking along the curb line and not stepping into the road. No other traffic creates a notable issue for the ego vehicle.", "hazard_reasoning": "The main risk is the gray van ahead drifting into the ego lane as it passes the parked vehicle in its own lane. Because it is crossing toward the ego path, the driver should anticipate this merge and stay alert to avoid a possible collision."}
{"id": "train_09562", "split": "train", "clip_key": "2020-0203-114632_003320_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "003320"}, "frames": ["2020-0203-114632_003320_movie_t-3.jpg", "2020-0203-114632_003320_movie_t-2.jpg", "2020-0203-114632_003320_movie_t-1.jpg", "2020-0203-114632_003320_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be cautious of the white truck ahead", "environment_perception": "The scene shows an urban two-way road with one lane in each direction and no center divider, with the ego vehicle nearing a zebra crossing on a clear, lightly trafficked stretch. In the opposing lane, a gray van is traveling straight toward the ego vehicle through the crossing area while remaining in lane. Ahead of it, a white truck is also coming toward the ego car in the same oncoming lane. A pedestrian is visible on the right sidewalk near the crossing, but stays off the road.", "hazard_reasoning": "The white truck is the main concern because it is approaching in the right lane directly toward the ego vehicle. Its motion leaves the possibility of a lane intrusion or cut-in, which would narrow the available space. The driver should watch its path closely and be ready for an oncoming-vehicle conflict."}
{"id": "train_09563", "split": "train", "clip_key": "2020-0131-103016_039283_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "039283"}, "frames": ["2020-0131-103016_039283_movie_t-3.jpg", "2020-0131-103016_039283_movie_t-2.jpg", "2020-0131-103016_039283_movie_t-1.jpg", "2020-0131-103016_039283_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "The scene shows a wide urban arterial leading into a large intersection with no center median, and the road surface appears clear. Traffic is steady. In the ego lane ahead, a small flatbed truck is moving slowly toward the junction and is limiting progress. A white box truck in the adjacent middle lane continues straight at a similar pace and stays in its lane. On the right side, within the oncoming lanes, a white van is approaching the ego vehicle while remaining with the opposing traffic. Overhead gantries and directional signs are visible above the intersection.", "hazard_reasoning": "The main concern is the white van approaching from the right side in the oncoming lanes. Since it is moving toward the ego vehicle, it could potentially drift into the ego path, creating a collision risk. The appropriate response is to yield."}
{"id": "train_09564", "split": "train", "clip_key": "2020-0228-150133_002038_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "002038"}, "frames": ["2020-0228-150133_002038_movie_t-3.jpg", "2020-0228-150133_002038_movie_t-2.jpg", "2020-0228-150133_002038_movie_t-1.jpg", "2020-0228-150133_002038_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A two-way urban road with one lane per direction and a painted centerline is visible, with uneven pavement near a work area and generally slow-moving traffic. Ahead in the ego lane, a white box truck is slowing and coming to a stop as the road tightens. In the opposing lane on the right, a white van is approaching and moving close to the centerline, reducing available space. On the left, road work is active: a worker stands by traffic cones and a parked truck, and the setup encroaches toward the lane. Parked cars also line the curb on the right.", "hazard_reasoning": "The main hazard is the construction activity on the left side of the road, where the worker, cones, and parked truck create a narrow and risky passage. The driver needs to proceed cautiously through this area to avoid hitting the worker, cones, or truck."}
{"id": "train_09565", "split": "train", "clip_key": "2020-0131-103016_011998_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0131-103016_011998_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0131-103016_011998_movie_t-3_augB1.jpg", "2020-0131-103016_011998_movie_t-2_augB1.jpg", "2020-0131-103016_011998_movie_t-1_augB1.jpg", "2020-0131-103016_011998_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A multi-lane urban roadway without a median leads toward a signalized junction, with moderate traffic and oncoming vehicles traveling on the right side. In the ego lane, a black van ahead is slowing because a white box truck from the adjacent right lane is merging left into the same lane, reducing available space and speed. A motorcycle slightly ahead to the right continues straight between lanes and passes close to the van in front. Other vehicles remain moving in neighboring same-direction lanes, while oncoming traffic continues steadily beyond the roadway divide.", "hazard_reasoning": "The main concern is the white truck merging into the ego lane, causing the black van ahead to brake and limiting the ego vehicle's forward room. This creates an immediate need to slow down and keep a safe following distance to avoid a potential collision with the merging vehicle."}
{"id": "train_09566", "split": "train", "clip_key": "2020-0220-151845_047445_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "047445"}, "frames": ["2020-0220-151845_047445_movie_t-3.jpg", "2020-0220-151845_047445_movie_t-2.jpg", "2020-0220-151845_047445_movie_t-1.jpg", "2020-0220-151845_047445_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the truck", "environment_perception": "This is a multi-lane urban roadway beneath an elevated structure, with two lanes heading the same direction, a bollarded shoulder on the left, and a guardrail on the right. The road surface appears dry and traffic is flowing moderately. In front-left, a yellow and green truck is moving out from the shoulder into the left lane, merging into traffic. Farther ahead in that same left lane, a tarp-covered work truck is moving slowly and limiting the lane’s speed. In the right lane, a silver hatchback is slightly ahead of the ego vehicle and continuing straight. A large yellow coach bus is stopped along the far-left bollarded area, and an illuminated electronic sign hangs overhead.", "hazard_reasoning": "The main hazard is the yellow and green truck merging into the left lane. Because it is cutting across from the shoulder, it may enter your path unexpectedly and create a side-swipe or encroachment risk. The safest response is to keep clear and pass with caution, maintaining distance from the truck."}
{"id": "train_09567", "split": "train", "clip_key": "2020-0212-102546_079975_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "079975"}, "frames": ["2020-0212-102546_079975_movie_t-3.jpg", "2020-0212-102546_079975_movie_t-2.jpg", "2020-0212-102546_079975_movie_t-1.jpg", "2020-0212-102546_079975_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck's lane change", "environment_perception": "The scene shows an urban divided roadway bending to the right, with two lanes for the ego direction, a raised median on the right, and clear pavement. Traffic is moderate. A white mini-truck ahead of the ego vehicle is signaling and drifting into the right lane, leaving more room in front of the ego car. A black car farther ahead remains in the right lane at roughly the same speed. On the opposite side of the median, multiple trucks and cars travel toward the camera. Along the left-side path, the pedestrian light is red and a sign indicates bicycles are not allowed.", "hazard_reasoning": "The main concern is the white truck ahead merging right from the ego lane. During this lane change, it could move into the ego vehicle's path, so the driver should monitor it closely."}
{"id": "train_09568", "split": "train", "clip_key": "2020-0131-103016_039283_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "039283"}, "frames": ["2020-0131-103016_039283_movie_t-3.jpg", "2020-0131-103016_039283_movie_t-2.jpg", "2020-0131-103016_039283_movie_t-1.jpg", "2020-0131-103016_039283_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "The ego vehicle is traveling along a multi-lane urban road toward a large intersection with overhead signals and direction signage, and there is no visible median. Traffic looks moderate and flows steadily. A small flatbed truck ahead in the ego lane is moving slowly toward the junction, while a white box truck in the adjacent lane continues straight at a similar pace. On the right side, in the opposing lanes, a white van is approaching the ego car but stays within its own lane.", "hazard_reasoning": "The main risk is the oncoming white van on the right side of the roadway. Because it is moving toward the ego vehicle and could potentially drift or cut across, it presents a collision threat, so the driver should yield."}
{"id": "train_09569", "split": "train", "clip_key": "titan_clip_290_000090_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "titan_clip_290_000090_movie_t_augB1.jpg", "frame": ""}, "frames": ["titan_clip_290_000090_movie_t-3_augB1.jpg", "titan_clip_290_000090_movie_t-2_augB1.jpg", "titan_clip_290_000090_movie_t-1_augB1.jpg", "titan_clip_290_000090_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "'Yield to turning SUV'", "environment_perception": "The scene shows a narrow urban side street running under an elevated railway toward a small intersection, with smooth pavement and limited visibility from the overpass and nearby storefronts. A white SUV is entering from the left and turning left into the ego lane in the middle of the junction, slowly occupying the travel path. A pedestrian farther ahead near the center is walking rightward across the opening of the lane toward the shops, while another person remains by the storefront on the right near the curb and does not enter the road. A 4.0 m clearance sign is visible above the underpass.", "hazard_reasoning": "The main hazard is the white SUV turning left into the ego lane in the intersection. Because it is moving into the vehicle’s path, the driver needs to yield and avoid a potential collision."}
{"id": "train_09570", "split": "train", "clip_key": "titan_clip_755_000096_movie", "source": {"subset": "titan", "scenario": "clip_755", "frame": "000096"}, "frames": ["titan_clip_755_000096_movie_t-3.jpg", "titan_clip_755_000096_movie_t-2.jpg", "titan_clip_755_000096_movie_t-1.jpg", "titan_clip_755_000096_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A two-way urban street with no centerline passes through a commercial area. The pavement is clear, but the left side is tightened by a curbside work zone. Ahead on the left, a black flatbed truck is stopped next to a row of orange traffic cones that extend slightly into the ego lane, reducing available space. There are also pedestrians farther ahead near the middle of the block, and a bicyclist traveling slowly near the center of the lane in the same direction.", "hazard_reasoning": "The main visible hazard is the line of orange cones on the left, which marks construction activity and a narrowed roadway. Because the cones partially encroach into the driving path, the driver needs to slow and steer carefully to pass safely."}
{"id": "train_09571", "split": "train", "clip_key": "2020-0129-144857_021615_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "021615"}, "frames": ["2020-0129-144857_021615_movie_t-3.jpg", "2020-0129-144857_021615_movie_t-2.jpg", "2020-0129-144857_021615_movie_t-1.jpg", "2020-0129-144857_021615_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging vehicle ahead", "environment_perception": "The scene shows a dry urban roadway beneath an elevated structure, with two lanes for the ego direction, a painted gore and fence along the right side, and moderate traffic with slight slowdowns. Ahead in the ego lane, a black sedan is reducing speed because another vehicle is entering that lane. A white van comes in from the right slip road and merges ahead of the black sedan into the ego lane, affecting the ego vehicle’s progress. A silver hatchback in the left lane continues straight at a steady pace just ahead, so an immediate lane change is not practical. Chevron signs at the gore mark the merge zone.", "hazard_reasoning": "The main issue is the merge activity ahead: the black sedan is slowing as a vehicle ahead of it moves into the ego lane. This merging motion can trigger abrupt speed changes and requires attention to the traffic flow, so the driver should prepare for a merge-related hazard."}
{"id": "train_09572", "split": "train", "clip_key": "2020-0131-103016_039283_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "039283"}, "frames": ["2020-0131-103016_039283_movie_t-3.jpg", "2020-0131-103016_039283_movie_t-2.jpg", "2020-0131-103016_039283_movie_t-1.jpg", "2020-0131-103016_039283_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "The scene shows an urban multi-lane road nearing a large intersection without a median, with smooth pavement and moderate, steady traffic. A small flatbed truck ahead in the ego lane is moving slowly toward the junction, which limits the flow. In the neighboring middle lane, a white box truck is also proceeding straight at about the same pace and staying in lane. On the right side, in the opposing lanes, a white van is approaching the ego vehicle while remaining within its own lane. Signal gantries and directional signs are visible over the intersection ahead.", "hazard_reasoning": "The main concern is the white van approaching from the right side in the oncoming lanes. Because it is moving toward the ego vehicle and could potentially drift into the path of travel, the safest response is to yield to prevent a collision."}
{"id": "train_09573", "split": "train", "clip_key": "2020-0131-103016_011998_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "011998"}, "frames": ["2020-0131-103016_011998_movie_t-3.jpg", "2020-0131-103016_011998_movie_t-2.jpg", "2020-0131-103016_011998_movie_t-1.jpg", "2020-0131-103016_011998_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "A busy urban multi-lane road with smooth pavement leads toward a signalized intersection, with opposing traffic running on the right side and no physical median. In the ego lane, a black van directly ahead is slowing as a white box truck in front of it moves left from the adjacent right lane into the same lane. A motorcycle a little ahead and slightly to the right continues straight between lanes, passing close to the van. Other vehicles move steadily in nearby lanes while oncoming traffic remains visible across the roadway.", "hazard_reasoning": "The main risk is the white box truck merging into the ego lane ahead of the black van, causing the van to slow in front of us. Because this merge is directly affecting the lane ahead, the safest response is to reduce speed and keep a safe following gap to avoid a collision with the merging truck."}
{"id": "train_09574", "split": "train", "clip_key": "2020-0205-103411_120999_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "120999"}, "frames": ["2020-0205-103411_120999_movie_t-3.jpg", "2020-0205-103411_120999_movie_t-2.jpg", "2020-0205-103411_120999_movie_t-1.jpg", "2020-0205-103411_120999_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "A straight urban roadway with smooth pavement is ahead, with the ego vehicle traveling in a left-side through lane. On the right, a separated bus bay sits behind a low curb, holding moderate queued traffic while the through lane remains moving. A black hatchback immediately ahead is shifting left into the neighboring lane, momentarily affecting the ego car’s progress as it merges. Farther right, a city bus is stopped in the bay with several cars and a box truck lined up behind it, all separated from the ego lane by the curb island. Overhead signs are visible in the distance, and no traffic light is active in view.", "hazard_reasoning": "The main hazard is the black hatchback ahead moving out of the ego lane into the left lane. Because it is changing lanes directly in front of the ego vehicle, the driver should keep a safe following distance and continue behind it cautiously."}
{"id": "train_09575", "split": "train", "clip_key": "titan_clip_755_000096_movie", "source": {"subset": "titan", "scenario": "clip_755", "frame": "000096"}, "frames": ["titan_clip_755_000096_movie_t-3.jpg", "titan_clip_755_000096_movie_t-2.jpg", "titan_clip_755_000096_movie_t-1.jpg", "titan_clip_755_000096_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre", "environment_perception": "A commercial-area street with two-way traffic and no centerline has smooth pavement and relatively light flow. On the left side ahead, the usable road space tightens near a curbside work zone. A black flatbed truck is parked/stopped along the left curb, and a row of orange traffic cones extends beside it, edging slightly into the ego lane and narrowing the passage. Farther ahead, a few pedestrians are visible near mid-block, with some moving from left to right across the road. A bicyclist is also traveling ahead near the lane center in the same direction at a slow pace.", "hazard_reasoning": "The main concern is the line of orange cones along the left side, which signals road work and a narrowed driving path. Because the cones and stopped truck reduce available space, the driver should pass with caution and avoid drifting toward the work area."}
{"id": "train_09576", "split": "train", "clip_key": "titan_clip_1115_000462_movie", "source": {"subset": "titan", "scenario": "clip_1115", "frame": "000462"}, "frames": ["titan_clip_1115_000462_movie_t-3.jpg", "titan_clip_1115_000462_movie_t-2.jpg", "titan_clip_1115_000462_movie_t-1.jpg", "titan_clip_1115_000462_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to slow-moving vehicle", "environment_perception": "The scene shows an urban storefront street with a single narrow brick-paved lane and no median, where traffic is light and moving slowly. Ahead on the left, a white truck in the opposing lane is coming forward at a slow pace. Pedestrians are visible near and inside the marked crosswalk ahead, coming from the left sidewalk and also approaching from the right, which affects movement at the intersection. A small white car crosses the side street from right to left before the ego vehicle reaches it. Cones and a stall along the right curb make the roadside area slightly tighter.", "hazard_reasoning": "The main concern is the white truck ahead on the left side of the road, since it is moving slowly in the opposite direction. Because it may slow the flow and partially block visibility of pedestrian activity, the driver should yield and proceed cautiously."}
{"id": "train_09577", "split": "train", "clip_key": "2020-0226-140503_095557_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "095557"}, "frames": ["2020-0226-140503_095557_movie_t-3.jpg", "2020-0226-140503_095557_movie_t-2.jpg", "2020-0226-140503_095557_movie_t-1.jpg", "2020-0226-140503_095557_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is an urban multi-lane road bordered by midrise buildings, with smooth pavement and a fence along the right side. Traffic looks steady, with two same-direction lanes visible. A white pickup ahead and to the left is moving out of the left lane into the ego lane, narrowing the space directly in front of the ego vehicle. A black sedan just ahead keeps going straight in the left lane while the pickup merges. A small car farther ahead in the ego lane continues at a constant pace, and a roadside circular sign indicates a speed limit of 50.", "hazard_reasoning": "The main risk is the white pickup truck merging into the ego lane from the left. Because it cuts into the lane ahead of the ego vehicle, it can quickly reduce headway and create a rear-end collision risk if the driver does not slow down. Maintaining a safe following distance is the appropriate response."}
{"id": "train_09578", "split": "train", "clip_key": "2020-0127-132751_085933_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "085933"}, "frames": ["2020-0127-132751_085933_movie_t-3.jpg", "2020-0127-132751_085933_movie_t-2.jpg", "2020-0127-132751_085933_movie_t-1.jpg", "2020-0127-132751_085933_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene is an urban two-way road, with the ego vehicle moving in the left lane. Plastic bollards line the right side as a separator toward the opposing lanes, and the road surface is dry with light traffic. A green tarp-covered truck ahead is shifting left into the adjacent lane and is influencing the ego vehicle’s pace. Farther ahead, a black sedan continues straight at a similar speed. A large flatbed truck is parked along the left curb and remains outside the travel lane.", "hazard_reasoning": "The green truck is making a lane change from the ego lane into the left lane, likely due to congestion ahead. The main risk is a side-swipe or close conflict during the merge, so the driver should reduce speed and leave room for the truck to move over safely."}
{"id": "train_09579", "split": "train", "clip_key": "titan_clip_63_000066_movie", "source": {"subset": "titan", "scenario": "clip_63", "frame": "000066"}, "frames": ["titan_clip_63_000066_movie_t-3.jpg", "titan_clip_63_000066_movie_t-2.jpg", "titan_clip_63_000066_movie_t-1.jpg", "titan_clip_63_000066_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of cones narrowing the lane", "environment_perception": "The ego vehicle is moving along an urban side street with two-way traffic and no center line. The road surface looks clear and traffic is sparse. Ahead on the right curb, a large flatbed truck is stopped and extends partly into the travel lane, making the passage tighter near a work zone. A cyclist is also visible ahead near the middle of the road, traveling away from the ego vehicle. On the right side, orange traffic cones with striped bars and black-orange striped panels define the roadside work area.", "hazard_reasoning": "The most notable hazard is the work zone marked by the cones and striped barriers on the right. These indicators show that the lane is narrowed and that obstacles are present ahead, so the driver should proceed carefully to avoid a collision."}
{"id": "train_09580", "split": "train", "clip_key": "titan_clip_1115_000462_movie", "source": {"subset": "titan", "scenario": "clip_1115", "frame": "000462"}, "frames": ["titan_clip_1115_000462_movie_t-3.jpg", "titan_clip_1115_000462_movie_t-2.jpg", "titan_clip_1115_000462_movie_t-1.jpg", "titan_clip_1115_000462_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to slow-moving vehicle", "environment_perception": "The scene shows a narrow brick-paved urban street with no median and light traffic. Ahead on the left side, a white truck in the oncoming lane is moving slowly toward the camera and appears to be the main moving vehicle. There are pedestrians near the marked crosswalk in front, including people coming from the left sidewalk and others near the right side, which affects the intersection area. A small white car also crosses the side street from right to left before the ego vehicle reaches it. Cones and a roadside stall on the right edge slightly reduce available space.", "hazard_reasoning": "The most relevant hazard is the slow white truck on the left side of the road. Because it is approaching at low speed, it can interfere with traffic progression and make the area less predictable, so yielding is the safest response."}
{"id": "train_09581", "split": "train", "clip_key": "2020-0203-114632_066344_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_066344_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_066344_movie_t-3_augB1.jpg", "2020-0203-114632_066344_movie_t-2_augB1.jpg", "2020-0203-114632_066344_movie_t-1_augB1.jpg", "2020-0203-114632_066344_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of merging truck", "environment_perception": "The scene shows a built-up urban bridge on a two-way arterial road, with two lanes in the ego direction, a double orange center median, and a gentle right-hand curve. Traffic is light to moderate. A white truck ahead in the ego lane shifts right into the adjacent lane, briefly crossing our forward path. A dark car ahead-right continues straight in that right lane without merging. Several oncoming vehicles move past in the opposite lanes beyond the median. A yellow merge warning sign is visible on the left railing.", "hazard_reasoning": "The main risk is the white truck directly ahead as it moves into the right lane. Its merge could interfere with our path and reduce safe spacing, so it should be treated as the critical hazard and watched closely to avoid a collision."}
{"id": "train_09582", "split": "train", "clip_key": "titan_clip_63_000066_movie", "source": {"subset": "titan", "scenario": "clip_63", "frame": "000066"}, "frames": ["titan_clip_63_000066_movie_t-3.jpg", "titan_clip_63_000066_movie_t-2.jpg", "titan_clip_63_000066_movie_t-1.jpg", "titan_clip_63_000066_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of cones narrowing the lane", "environment_perception": "The scene shows a quiet urban side street with two-way traffic and no center divider, while the ego vehicle moves forward along the left side of the roadway. Ahead on the right curb, a large flatbed truck is parked/stopped and extends partly into the lane, making the road tighter through a work zone. A cyclist is also traveling away near the middle of the road, which could slow the ego vehicle through the narrow passage. Along the right edge, orange cones with striped connecting bars and black-orange warning panels outline the roadside work area.", "hazard_reasoning": "The most notable risk is the construction setup on the right, especially the cones and barriers that reduce the available lane width. This indicates a constrained path with possible obstacles nearby, so the driver should slow down and remain alert to avoid a collision."}
{"id": "train_09583", "split": "train", "clip_key": "titan_clip_1115_000462_movie", "source": {"subset": "titan", "scenario": "clip_1115", "frame": "000462"}, "frames": ["titan_clip_1115_000462_movie_t-3.jpg", "titan_clip_1115_000462_movie_t-2.jpg", "titan_clip_1115_000462_movie_t-1.jpg", "titan_clip_1115_000462_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to slow-moving vehicle", "environment_perception": "This is a narrow brick-paved urban street with no median and only light, slow traffic. A white truck is ahead in the opposing lane on the left side, moving slowly toward the camera. There are pedestrians near and in the marked crosswalk ahead, with movement from the left sidewalk and from the right side influencing the intersection. A small white car crosses the side street from right to left before the ego vehicle reaches it. Cones and a stall along the right curb reduce the available roadside space.", "hazard_reasoning": "The main concern is the white truck traveling slowly on the left in the oncoming lane. Because it is moving at a reduced pace, it can interfere with traffic flow and may limit visibility of the pedestrian activity ahead, so caution and yielding are appropriate."}
{"id": "train_09584", "split": "train", "clip_key": "2020-0228-102841_004467_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "004467"}, "frames": ["2020-0228-102841_004467_movie_t-3.jpg", "2020-0228-102841_004467_movie_t-2.jpg", "2020-0228-102841_004467_movie_t-1.jpg", "2020-0228-102841_004467_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of construction cones ahead.", "environment_perception": "A city intersection near an elevated rail line is visible on a two-way road with newly laid pavement, and the route ahead is restricted so traffic is sparse. A white van is ahead but stays to the right beyond the barricades, not entering the ego lane. On the left sidewalk, a few pedestrians are standing near shops and do not step into the street. Multiple striped barriers and cones mark an active work zone in front of the ego vehicle and shut off the through path. A small excavator and stacked barriers sit along the right edge of the scene.", "hazard_reasoning": "The main hazard is the road construction directly ahead, signaled by the cone and barrier setup. Because the lane is narrowed and the work area is blocking the route, the driver needs to proceed cautiously to avoid a possible sideswipe or collision."}
{"id": "train_09585", "split": "train", "clip_key": "2020-0204-150838_060754_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "060754"}, "frames": ["2020-0204-150838_060754_movie_t-3.jpg", "2020-0204-150838_060754_movie_t-2.jpg", "2020-0204-150838_060754_movie_t-1.jpg", "2020-0204-150838_060754_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of merging bus ahead", "environment_perception": "The scene shows an urban multilane road beneath an elevated expressway, with smooth pavement and moderate traffic moving in the same direction; there are no visible oncoming lanes. A silver bus ahead of the ego vehicle in the left lane shifts into the right lane, causing a brief slowdown as it merges. A large box truck is already traveling in the right lane a little ahead, so the bus passes in front of it and then keeps going. Farther ahead in the right lane, another truck continues at a steady speed. On the left, pedestrians are walking along a fenced sidewalk near storefronts, clearly separated from the roadway.", "hazard_reasoning": "The main concern is the silver bus ahead as it changes into the right lane. Its merge may take up space in the traffic flow and require the driver to stay alert and adjust speed or position if needed, so it is a lane-change merge hazard."}
{"id": "train_09586", "split": "train", "clip_key": "2020-0129-105040_000072_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0129-105040_000072_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0129-105040_000072_movie_t-3_augB1.jpg", "2020-0129-105040_000072_movie_t-2_augB1.jpg", "2020-0129-105040_000072_movie_t-1_augB1.jpg", "2020-0129-105040_000072_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "The view shows an urban multi-lane road crossing left to right with clear pavement and light to moderate traffic, and the ego vehicle is waiting at a zebra crosswalk. A pedestrian very near the camera moves from the left side across the crosswalk in front of the car, occupying the path ahead. On the near side of the cross street, a dark van travels leftward and passes through the junction, while a white pick-up truck in the farther lane also moves from right to left in front of the ego car and partly blocks the forward view.", "hazard_reasoning": "The white pick-up truck ahead is moving right to left away from the ego vehicle and creates a partial obstruction of the road ahead. Because it limits forward visibility, the safest response is to yield and stay alert for any hidden danger."}
{"id": "train_09587", "split": "train", "clip_key": "2020-0131-135401_030304_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030304"}, "frames": ["2020-0131-135401_030304_movie_t-3.jpg", "2020-0131-135401_030304_movie_t-2.jpg", "2020-0131-135401_030304_movie_t-1.jpg", "2020-0131-135401_030304_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the black sedan approaching on your right", "environment_perception": "The scene shows an urban two-way road with a single lane in each direction and no median, leading into a signalized intersection. The roadway appears clear and traffic is moderate. A white box truck ahead in the ego lane is moving through the green light and appears to be setting the travel pace. On the right side, a black sedan is coming toward the ego vehicle in the opposing lane, with a white car following behind it in the same stream. The signal ahead is green for the ego direction. A flatbed truck is parked at the right curb near the camera, and pedestrians can be seen on the sidewalks.", "hazard_reasoning": "The main concern is the black sedan approaching from the right in the opposite direction. Because it is closing in toward the ego vehicle near the intersection, there is a potential conflict if it drifts into the ego lane, so slowing and yielding is the safer response to avoid a collision."}
{"id": "train_09588", "split": "train", "clip_key": "2020-0228-102841_004467_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "004467"}, "frames": ["2020-0228-102841_004467_movie_t-3.jpg", "2020-0228-102841_004467_movie_t-2.jpg", "2020-0228-102841_004467_movie_t-1.jpg", "2020-0228-102841_004467_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of construction cones ahead.", "environment_perception": "The scene is an urban intersection near an elevated railway on a two-way road with newly laid pavement. The forward lane is blocked, leaving traffic sparse. A white van ahead moves slowly to the right behind the barricades and stays out of the ego lane. Several pedestrians are gathered on the left sidewalk near shops, but none are entering the road. Multiple striped barriers and cones mark a construction area directly ahead, closing off the route, while a small excavator and stacked barricades sit along the near right side.", "hazard_reasoning": "The main issue is the roadwork directly in front of the ego vehicle, signaled by the cones and barriers. Because the lane is narrowed and the path is obstructed, the driver needs to proceed carefully to avoid scraping barriers or causing a collision."}
{"id": "train_09589", "split": "train", "clip_key": "2020-0205-152530_003732_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-152530_003732_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-152530_003732_movie_t-3_augB1.jpg", "2020-0205-152530_003732_movie_t-2_augB1.jpg", "2020-0205-152530_003732_movie_t-1_augB1.jpg", "2020-0205-152530_003732_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of the gray van merging", "environment_perception": "The scene is a busy urban two-lane road without a divider, with clear dry pavement and relatively light traffic. A gray van approaching from the opposite direction moves across the centerline from the right-side lane into the ego lane to pass a parked vehicle in its lane, briefly occupying part of the ego vehicle’s path before correcting back. The parked car is close to the curb on the van’s side, reducing that lane’s space and causing the maneuver. A pedestrian is visible on the right sidewalk near the shops, walking parallel to the road and not entering the street.", "hazard_reasoning": "The main hazard is the gray van drifting into the ego lane while oncoming, as it merges around the parked vehicle ahead. Because it is encroaching into the ego path, the driver should treat it as an immediate lane-change merge risk and be ready to avoid a collision."}
{"id": "train_09590", "split": "train", "clip_key": "2020-0131-135401_030304_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030304"}, "frames": ["2020-0131-135401_030304_movie_t-3.jpg", "2020-0131-135401_030304_movie_t-2.jpg", "2020-0131-135401_030304_movie_t-1.jpg", "2020-0131-135401_030304_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the black sedan approaching on your right", "environment_perception": "The scene shows an urban two-way road with one lane in each direction, leading into a signal-controlled intersection. The road surface appears clear, and traffic is moderate. A white box truck is traveling ahead in the ego lane toward the green signal. On the right side, a black sedan is coming forward in the opposite lane and moving toward the ego vehicle as it crosses the intersection, with a white car following behind it in the same opposing flow. The signal for the ego direction is green. A large flatbed truck is parked along the right curb near the camera, and pedestrians can be seen on the sidewalks.", "hazard_reasoning": "The main concern is the black sedan approaching from the right in the opposing lane. Because it is moving toward the ego vehicle near the intersection, it presents a possible collision risk if it closes in or drifts into the ego lane. The driver should yield and stay alert."}
{"id": "train_09591", "split": "train", "clip_key": "2020-0131-103016_027741_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "027741"}, "frames": ["2020-0131-103016_027741_movie_t-3.jpg", "2020-0131-103016_027741_movie_t-2.jpg", "2020-0131-103016_027741_movie_t-1.jpg", "2020-0131-103016_027741_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "The scene shows an urban divided arterial with two lanes in the same direction, bordered by a raised median and trees. Traffic is moderate and flowing steadily on smooth pavement. A white box truck slightly ahead on the right shifts left and merges into the ego lane from the right lane, placing itself ahead of the ego vehicle and influencing its speed. Another light-duty truck farther ahead continues straight in the same lane at roughly the same pace, serving as the lead vehicle. On the opposite side of the median, a single car travels in the oncoming direction without affecting the ego vehicle. Blue overhead direction signs are visible in the distance.", "hazard_reasoning": "The main hazard is the white truck moving into the ego lane from the right and cutting in ahead. This lane change reduces the available space in front and could force the ego vehicle to adjust speed. Slowing down to preserve a safe following gap is the appropriate response."}
{"id": "train_09592", "split": "train", "clip_key": "2020-0220-151845_000145_movie", "source": {"subset": "drama", "scenario": "2020-0220-151845", "frame": "000145"}, "frames": ["2020-0220-151845_000145_movie_t-3.jpg", "2020-0220-151845_000145_movie_t-2.jpg", "2020-0220-151845_000145_movie_t-1.jpg", "2020-0220-151845_000145_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the merging vehicle", "environment_perception": "This is an urban two-way multi-lane road with a painted center divider and dry, even pavement. Traffic is moderate, with steady oncoming vehicles visible on the right. In front, a silver sedan in the ego lane shifts right toward the adjacent lane due to a bus stopped at the left curb ahead, which affects the ego vehicle’s flow. The bus remains parked at the curb near a stop bay, and pedestrians on the left sidewalk stay behind railings and away from the road.", "hazard_reasoning": "The key hazard is the silver sedan merging from the ego lane into the right lane because of the stopped bus ahead. That movement could interfere with the ego vehicle’s path, so the driver should keep clear and maneuver cautiously around the merging car."}
{"id": "train_09593", "split": "train", "clip_key": "titan_clip_1031_000168_movie", "source": {"subset": "titan", "scenario": "clip_1031", "frame": "000168"}, "frames": ["titan_clip_1031_000168_movie_t-3.jpg", "titan_clip_1031_000168_movie_t-2.jpg", "titan_clip_1031_000168_movie_t-1.jpg", "titan_clip_1031_000168_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be cautious of traffic cone ahead.", "environment_perception": "The scene shows a narrow residential street without a centerline, stretching ahead on clear pavement with little traffic and no moving vehicles. A blue dump truck is parked on the left side near a work area and slightly encroaches into the lane, reducing available space. Further up, another blue work truck is also stopped on the left and sticks out a bit into the roadway, forming a tighter passage. Several orange traffic cones, including one on the left edge of the road, mark the work zone and guide traffic toward the right. Bicycles and tools near the buildings on the right add minor roadside clutter.", "hazard_reasoning": "The key hazard is the orange traffic cone on the left side of the road. Its presence signals a work zone and possible lane narrowing ahead, so the driver should remain attentive and prepare to adjust the vehicle path in advance."}
{"id": "train_09594", "split": "train", "clip_key": "2020-0131-135401_030304_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030304"}, "frames": ["2020-0131-135401_030304_movie_t-3.jpg", "2020-0131-135401_030304_movie_t-2.jpg", "2020-0131-135401_030304_movie_t-1.jpg", "2020-0131-135401_030304_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the black sedan approaching on your right", "environment_perception": "The scene shows an urban two-way road with one lane in each direction and no center median, opening into a signalized intersection. The surface appears clear, and traffic is moderate. Ahead in the ego lane, a white box truck is moving forward through the green light. On the right side, a black sedan is coming toward the ego vehicle in the opposite lane, with a white car following behind it in that same opposing flow. The signal for the ego direction is green. A large flatbed truck is parked at the right curb near the camera, and pedestrians can be seen along the sidewalks.", "hazard_reasoning": "The main hazard is the black sedan approaching from the right in the opposing lane. Because it is moving toward the ego vehicle through the intersection, it presents a potential conflict if it continues close to the ego path, so caution and yielding are appropriate to avoid a collision."}
{"id": "train_09595", "split": "train", "clip_key": "titan_clip_1031_000168_movie", "source": {"subset": "titan", "scenario": "clip_1031", "frame": "000168"}, "frames": ["titan_clip_1031_000168_movie_t-3.jpg", "titan_clip_1031_000168_movie_t-2.jpg", "titan_clip_1031_000168_movie_t-1.jpg", "titan_clip_1031_000168_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be cautious of traffic cone ahead.", "environment_perception": "This is a narrow residential urban road with no centerline, continuing straight on clear pavement. Traffic is sparse and there are no moving vehicles. A blue dump truck is parked along the left edge near a work area and partially extends into the lane, narrowing the available space. Further ahead on the left, another blue work truck also encroaches slightly into the lane, making the passage tighter. Orange traffic cones, including one positioned on the left side of the road, mark the work zone and push traffic toward the right. Bicycles and tools are visible near the buildings on the right, adding some roadside clutter.", "hazard_reasoning": "The key hazard is the orange cone on the left side of the road. It signals a work zone and possible lane restriction ahead, so the driver should anticipate narrowing and proceed carefully."}
{"id": "train_09596", "split": "train", "clip_key": "titan_clip_290_000090_movie", "source": {"subset": "titan", "scenario": "clip_290", "frame": "000090"}, "frames": ["titan_clip_290_000090_movie_t-3.jpg", "titan_clip_290_000090_movie_t-2.jpg", "titan_clip_290_000090_movie_t-1.jpg", "titan_clip_290_000090_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "'Yield to turning SUV'", "environment_perception": "The scene shows a narrow urban street running under an elevated railway into a small intersection, with limited visibility from the overpass and nearby buildings. The road surface is clear and traffic is light. A white SUV at the left side of the junction is making a left turn into the ego lane and is already partway into the intersection, slowly entering the vehicle’s path. Ahead near the center, a pedestrian is walking rightward across the opening toward the shops, while another person remains on the right by the storefront and does not enter the road. A 4.0 m clearance sign is posted above the underpass.", "hazard_reasoning": "The main risk is the white SUV turning left into the ego lane from the intersection. Since it is moving into the vehicle’s path, the driver needs to give way to prevent a collision."}
{"id": "train_09597", "split": "train", "clip_key": "2020-0204-150838_061802_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "061802"}, "frames": ["2020-0204-150838_061802_movie_t-3.jpg", "2020-0204-150838_061802_movie_t-2.jpg", "2020-0204-150838_061802_movie_t-1.jpg", "2020-0204-150838_061802_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene shows a congested urban multilane roadway beneath an elevated expressway, with smooth pavement and no visible median. Traffic is moving slowly. A large white box truck is immediately ahead in the ego lane, rolling forward at a crawl and acting as the lead vehicle. On the left, a gray van is moving into the ego lane and edging across in front of the ego car. To the right, a dark heavy truck and a silver hatchback travel in the same direction nearby, leaving little space to maneuver. An overhead blue direction sign points toward Chiba and Tatsumi.", "hazard_reasoning": "The key hazard is the gray van merging from the left into the ego lane ahead of the car. Because it is cutting in close, the ego driver needs to reduce speed and keep a safe gap to avoid a side or rear collision during the merge."}
{"id": "train_09598", "split": "train", "clip_key": "2020-0227-153144_011170_movie", "source": {"subset": "drama", "scenario": "2020-0227-153144", "frame": "011170"}, "frames": ["2020-0227-153144_011170_movie_t-3.jpg", "2020-0227-153144_011170_movie_t-2.jpg", "2020-0227-153144_011170_movie_t-1.jpg", "2020-0227-153144_011170_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the black van cutting in.", "environment_perception": "This is an urban road bordered by mid-rise apartment buildings, with light to moderate traffic on a smooth surface and two lanes in the ego direction without a central divider. In the right side ahead, a black van starts moving left into the ego lane and comes in front, momentarily limiting the ego vehicle’s progress. A dark sedan remains farther ahead in the same lane, traveling straight at a steady pace. Oncoming traffic is visible on the far right and does not affect the ego path. A 50 speed-limit sign stands on the left.", "hazard_reasoning": "The black van is merging from the right lane into the ego lane. Because it is cutting in ahead of the vehicle, the driver may need to slow or steer to keep a safe gap, creating a medium collision risk."}
{"id": "train_09599", "split": "train", "clip_key": "2020-0225-102455_021720_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_021720_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_021720_movie_t-3_augB1.jpg", "2020-0225-102455_021720_movie_t-2_augB1.jpg", "2020-0225-102455_021720_movie_t-1_augB1.jpg", "2020-0225-102455_021720_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "be cautious of lane-changing vehicle", "environment_perception": "An urban two-way road with one narrow lane in each direction bends to the right, and the traffic appears dense and moving slowly. A silver sedan ahead on the right moves into the ego lane from the right side and reduces speed, effectively merging into the flow. Farther along in the same lane, a black minivan is stopped near the curve and adds to the buildup. In the opposing lane on the right, several vehicles are queued and mostly at a standstill. Two pedestrians are waiting on the right sidewalk next to the zebra crossing, and pedestrian-crossing plus no-stopping signs are visible on roadside poles.", "hazard_reasoning": "The main hazard is the silver sedan merging into the ego lane from the right just ahead of the vehicle. This sudden lane change creates a possible conflict with the ego car, so it should be treated as a serious risk and approached with caution."}
{"id": "train_09600", "split": "train", "clip_key": "2020-0203-114632_005124_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005124"}, "frames": ["2020-0203-114632_005124_movie_t-3.jpg", "2020-0203-114632_005124_movie_t-2.jpg", "2020-0203-114632_005124_movie_t-1.jpg", "2020-0203-114632_005124_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "This is an urban two-way street with a single lane in each direction and a centerline, lined by shops and apartments. The road surface is clear and traffic is sparse, but the ego vehicle’s left lane is stopped because of roadworks. Ahead, a worker stands near orange cones beside a small work truck and indicates that the ego vehicle should remain stopped. In the opposing lane, an oncoming city bus moves toward the camera past the work zone. The truck and construction equipment occupy part of the left lane near the curb, creating a brief narrowed section of roadway.", "hazard_reasoning": "The lane is obstructed by construction activity, so the ego vehicle should not continue forward yet. Since the worker is signaling to wait, the proper response is to stop and avoid driving into the blocked area until it is safe to proceed."}
{"id": "train_09601", "split": "train", "clip_key": "2020-0218-103119_023038_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "023038"}, "frames": ["2020-0218-103119_023038_movie_t-3.jpg", "2020-0218-103119_023038_movie_t-2.jpg", "2020-0218-103119_023038_movie_t-1.jpg", "2020-0218-103119_023038_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the oncoming vehicle", "environment_perception": "A multi-lane two-way urban road with a smooth surface and no center median stretches past tall buildings toward a pedestrian overpass, with moderate traffic flowing in both directions. Ahead in the same lane, a white box truck moves straight at a steady pace and roughly defines the ego vehicle’s speed. Farther ahead near the left curb, a white van in the ego direction is slowing near the crosswalk, reducing available space. On the right side, a black sedan is coming toward the ego vehicle in the oncoming lane, while a pedestrian waits on the left sidewalk by the crosswalk.", "hazard_reasoning": "The main concern is the black sedan traveling toward the ego car in the opposite lane. Since it is approaching within the oncoming lane, it creates the most important collision threat, so the driver should watch the oncoming vehicle carefully."}
{"id": "train_09602", "split": "train", "clip_key": "2020-0131-103016_010820_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "010820"}, "frames": ["2020-0131-103016_010820_movie_t-3.jpg", "2020-0131-103016_010820_movie_t-2.jpg", "2020-0131-103016_010820_movie_t-1.jpg", "2020-0131-103016_010820_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the black van.", "environment_perception": "An urban multi-lane roadway passes beneath a steel overpass with smooth pavement and moderate traffic. In the left lane ahead, a white box truck is slowing under the bridge and guiding the flow. Ahead-left, a black van remains in that lane while the ego vehicle moves to merge in behind it. Ahead-center, a white sedan is drifting left across lanes into the same area under the bridge, briefly overlapping the ego vehicle’s intended path. A 4.0 m clearance sign is visible on the overpass.", "hazard_reasoning": "The main hazard is the lane merge behind the black van. The ego vehicle needs to yield and keep a safe gap so the merge can be completed without contact."}
{"id": "train_09603", "split": "train", "clip_key": "2020-0203-114632_005124_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005124"}, "frames": ["2020-0203-114632_005124_movie_t-3.jpg", "2020-0203-114632_005124_movie_t-2.jpg", "2020-0203-114632_005124_movie_t-1.jpg", "2020-0203-114632_005124_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "An urban two-way street with a single lane in each direction and a centerline passes by shops and apartment buildings. The road surface is clear, traffic is sparse, and the ego vehicle’s left lane is stopped because of roadworks ahead. A worker stands in the lane among orange cones beside a small work truck and appears to be directing the ego car to halt and wait. In the opposite lane, a city bus is coming toward the camera past the work zone. The truck and equipment occupy part of the left side near the curb, creating a narrowed section of roadway.", "hazard_reasoning": "The main issue is the road construction blocking the lane ahead. The ego vehicle should remain stopped and wait for the signal to continue rather than enter the blocked area. This makes the construction zone the critical hazard, requiring caution and compliance with the worker’s directions."}
{"id": "train_09604", "split": "train", "clip_key": "2020-0203-154554_011533_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "011533"}, "frames": ["2020-0203-154554_011533_movie_t-3.jpg", "2020-0203-154554_011533_movie_t-2.jpg", "2020-0203-154554_011533_movie_t-1.jpg", "2020-0203-154554_011533_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A broad urban multi-lane road with no median passes through a wide intersection, with smooth pavement and traffic moving at a calm, steady speed. In the left lane ahead, a white van shifts slightly right within its lane and continues through the intersection, moving away from the ego vehicle while a cyclist travels along the left edge of that same lane beside it. To the front-right, a silver hatchback in the neighboring lane goes straight and slowly increases its distance. Farther right, a dark taxi continues ahead in the outer lane near the curb without changing lanes. Sidewalk pedestrians are present, and there are no other notable obstacles.", "hazard_reasoning": "The main concern is the white van in the left lane, which is adjusting its position away from the ego car because of the nearby cyclist. This creates a potential lane-change or merge-like movement that could become unpredictable, so slowing down is the safest response to keep distance and be ready for any sudden drift."}
{"id": "train_09605", "split": "train", "clip_key": "2020-0129-105040_010401_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "010401"}, "frames": ["2020-0129-105040_010401_movie_t-3.jpg", "2020-0129-105040_010401_movie_t-2.jpg", "2020-0129-105040_010401_movie_t-1.jpg", "2020-0129-105040_010401_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene shows an urban multi-lane road near an intersection with dry, smooth pavement and several vehicles moving in the same direction. A blue truck ahead-left is drifting right from the left lane and is about to merge into the ego lane directly ahead. A small white box truck remains in front in the ego lane at a steady speed, while a large coach bus to the right travels parallel slightly ahead, leaving little room to move over.", "hazard_reasoning": "The main risk is the blue truck entering the ego lane from the left. Because it is already cutting across and may merge in front of the vehicle, the driver needs to slow down to keep a safe gap and prevent a collision."}
{"id": "train_09606", "split": "train", "clip_key": "titan_clip_422_000186_movie", "source": {"subset": "titan", "scenario": "clip_422", "frame": "000186"}, "frames": ["titan_clip_422_000186_movie_t-3.jpg", "titan_clip_422_000186_movie_t-2.jpg", "titan_clip_422_000186_movie_t-1.jpg", "titan_clip_422_000186_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of the cone ahead", "environment_perception": "The scene shows a narrow urban two-way street with one lane in each direction, bordered by mid-rise buildings. The driving lane is narrowed by a coned-off work area and parked utility trucks, making movement slower and more constrained. A white car ahead continues carefully through the reduced space and appears to be guiding the flow. On the left side, a construction worker is standing near red traffic cones and directing vehicles around the obstruction, while a pedestrian on the right sidewalk is walking away and stays off the road.", "hazard_reasoning": "The main hazard is the red traffic cone on the left side of the roadway, which clearly signals active road construction. This work zone means the driver may need to slow down and adjust lane position to pass safely around possible obstructions."}
{"id": "train_09607", "split": "train", "clip_key": "2020-0218-103119_023038_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "023038"}, "frames": ["2020-0218-103119_023038_movie_t-3.jpg", "2020-0218-103119_023038_movie_t-2.jpg", "2020-0218-103119_023038_movie_t-1.jpg", "2020-0218-103119_023038_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the oncoming vehicle", "environment_perception": "This is an urban two-way multi-lane road with smooth pavement, no center divider, tall buildings along the sides, and a pedestrian overpass ahead. Traffic flows moderately in both directions. In front of the ego vehicle, a white box truck continues straight at a steady speed and appears to define the pace. Farther ahead on the left side in the same direction, a white van is slowing near the crosswalk, which reduces available space. On the right side, a black sedan is coming toward the ego vehicle in the oncoming lane and keeps within its lane as it passes. A pedestrian is also visible on the left sidewalk near the crosswalk.", "hazard_reasoning": "The main concern is the black sedan approaching in the oncoming lane toward the ego car. Since it is moving opposite the ego direction, it creates a collision risk, so the driver should pay attention to the oncoming vehicle."}
{"id": "train_09608", "split": "train", "clip_key": "2020-0207-151349_014406_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "014406"}, "frames": ["2020-0207-151349_014406_movie_t-3.jpg", "2020-0207-151349_014406_movie_t-2.jpg", "2020-0207-151349_014406_movie_t-1.jpg", "2020-0207-151349_014406_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Stop behind the white van", "environment_perception": "The scene shows a multi-lane urban road near an intersection with smooth pavement, heavy queued traffic, and bright glare from the sun. A hedge lines the right curb. Directly ahead in the ego lane, a white van is stopped and angled left as if preparing to turn and merge into the adjacent line. A box truck ahead-right is also stationary in the next lane, and another box truck on the left sits close alongside, leaving little room around the vehicle.", "hazard_reasoning": "The main risk is the white van in front, since it is positioned to turn left and merge into the stopped traffic flow. It could move into the ego path, so the driver should remain stopped behind it and keep a safe gap to prevent a collision."}
{"id": "train_09609", "split": "train", "clip_key": "2020-0220-151845_049015_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-151845_049015_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-151845_049015_movie_t-3_augB1.jpg", "2020-0220-151845_049015_movie_t-2_augB1.jpg", "2020-0220-151845_049015_movie_t-1_augB1.jpg", "2020-0220-151845_049015_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Start moving", "environment_perception": "A multi-lane urban road runs beneath an elevated expressway, with clear pavement and moderate traffic flow. The left lane appears slower, while the center and right lanes move more steadily. Directly ahead in the ego lane, a red truck carrying a yellow-covered load pulls ahead and gradually increases the distance from the camera, briefly limiting and then opening the space in front. A white van beside it in the left lane remains in the queue and stays parallel without drifting over. Ahead-right, a silver microvan continues at a steady pace in its own lane. Blue overhead direction signs indicate destinations such as Hachioji and Takao, and mention an entrance roughly 200 m ahead.", "hazard_reasoning": "The main concern is the red and yellow truck ahead in the ego lane speeding up and changing the available gap in front of the vehicle. As it moves away quickly, the driver should begin moving to keep a safe following distance and avoid sudden control inputs."}
{"id": "train_09610", "split": "train", "clip_key": "titan_clip_422_000186_movie", "source": {"subset": "titan", "scenario": "clip_422", "frame": "000186"}, "frames": ["titan_clip_422_000186_movie_t-3.jpg", "titan_clip_422_000186_movie_t-2.jpg", "titan_clip_422_000186_movie_t-1.jpg", "titan_clip_422_000186_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of the cone ahead", "environment_perception": "The scene shows a narrow urban two-way street, with one lane in each direction, bordered by mid-rise buildings. The roadway is constricted by a coned-off work area and parked utility trucks, making movement slow and cautious. A white car ahead continues carefully through the narrowed lane and effectively guides the ego vehicle's pace. On the left side near the roadway, a construction worker is positioned beside red traffic cones, while a pedestrian on the right sidewalk is walking away and stays out of the traffic lane.", "hazard_reasoning": "The visible red cone on the left signals an active construction zone. Because the work area narrows the road and may require a slight adjustment in speed or position, it is the main hazard to monitor."}
{"id": "train_09611", "split": "train", "clip_key": "2020-0218-103119_002934_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002934"}, "frames": ["2020-0218-103119_002934_movie_t-3.jpg", "2020-0218-103119_002934_movie_t-2.jpg", "2020-0218-103119_002934_movie_t-1.jpg", "2020-0218-103119_002934_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A straight urban arterial with smooth pavement and a painted chevron median runs between tall buildings under bright sunlight, with light to moderate traffic. The ego vehicle is traveling in the left-side carriageway among two lanes moving in the same direction, while opposing traffic is on the right. A dark car ahead in the ego lane continues pulling away and roughly sets the speed of travel. In the right oncoming lane, a black sedan is approaching and then passing by without drifting toward the median. A white truck farther ahead in the neighboring same-direction lane keeps pace with the flow.", "hazard_reasoning": "The main concern is the black sedan coming toward the ego vehicle in the right opposing lane. Since it is closing distance, it presents a potential collision risk if the ego vehicle keeps moving, so the safest response is to stop immediately."}
{"id": "train_09612", "split": "train", "clip_key": "2020-0218-103119_002934_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002934"}, "frames": ["2020-0218-103119_002934_movie_t-3.jpg", "2020-0218-103119_002934_movie_t-2.jpg", "2020-0218-103119_002934_movie_t-1.jpg", "2020-0218-103119_002934_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A straight urban multilane roadway with a painted chevron median and clear pavement stretches between tall buildings under bright sunlight, with light to moderate traffic. The ego vehicle is in the left-side carriageway, where two lanes travel in the same direction, while opposing traffic is on the right. A dark car ahead in the ego lane continues pulling away and sets a loose pace. A black sedan comes toward the ego vehicle in the right oncoming lane and passes through without drifting toward the median. A white truck farther ahead in the neighboring same-direction lane keeps moving with the traffic flow.", "hazard_reasoning": "The black sedan in the right lane is approaching the ego vehicle head-on. Since it is moving toward us in the opposing lane, it presents the main collision risk, so the driver should stop."}
{"id": "train_09613", "split": "train", "clip_key": "2020-0214-102601_048760_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "048760"}, "frames": ["2020-0214-102601_048760_movie_t-3.jpg", "2020-0214-102601_048760_movie_t-2.jpg", "2020-0214-102601_048760_movie_t-1.jpg", "2020-0214-102601_048760_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the van's movement", "environment_perception": "An urban roadway runs beneath an elevated viaduct, with multiple lanes, concrete side barriers, a solid center line, smooth pavement, and light traffic while the road bends gently to the right. A white van is traveling close beside the ego vehicle in the left lane, slightly left of center, and it is moving steadily ahead. A small truck is also visible farther in front in the same direction under the structure.", "hazard_reasoning": "The main concern is the white van traveling alongside the ego vehicle in the adjacent left lane. Because it is so close and moving forward, it could shift over or merge unexpectedly and come into your path. This creates a moderate lane-change risk, so the van's movement should be watched carefully."}
{"id": "train_09614", "split": "train", "clip_key": "2020-0225-102455_017121_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0225-102455_017121_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0225-102455_017121_movie_t-3_augB1.jpg", "2020-0225-102455_017121_movie_t-2_augB1.jpg", "2020-0225-102455_017121_movie_t-1_augB1.jpg", "2020-0225-102455_017121_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Be aware of truck merging left", "environment_perception": "A dry, smooth urban multi-lane roadway with chevron buffers and no median is visible, with moderate traffic moving steadily. A white box truck ahead is drifting left into the left lane in front of the ego vehicle, briefly limiting the ego car’s progress. On the right, multiple vehicles continue straight at a consistent pace, and some are passing the ego car. Parked cars line the left curb, leaving less room near the truck as it merges.", "hazard_reasoning": "The main hazard is the white truck merging left directly ahead of the ego vehicle. Because its lane change can interfere with the ego car’s path, the driver should remain attentive and be ready to slow or adjust speed."}
{"id": "train_09615", "split": "train", "clip_key": "2020-0228-102841_021631_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "021631"}, "frames": ["2020-0228-102841_021631_movie_t-3.jpg", "2020-0228-102841_021631_movie_t-2.jpg", "2020-0228-102841_021631_movie_t-1.jpg", "2020-0228-102841_021631_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the cutting sedan", "environment_perception": "The scene shows an urban multi-lane arterial with smooth roadway, no median, and light same-direction traffic. The rightmost lane narrows and merges left ahead as the road approaches a broad signalized intersection. A white sedan ahead-left shifts right over the dashed lane line and moves into the ego lane, ending up directly ahead. Farther up in the left lanes, two box trucks are creeping toward the intersection and seem to form a small queue, while a small car well ahead in the ego lane continues straight at a steady pace with plenty of space.", "hazard_reasoning": "The main concern is the white sedan merging from the left into the ego lane. Because it cuts in suddenly, it could create a conflict and force the driver to react if the movement is not anticipated, so caution is needed."}
{"id": "train_09616", "split": "train", "clip_key": "2020-0218-103119_023038_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "023038"}, "frames": ["2020-0218-103119_023038_movie_t-3.jpg", "2020-0218-103119_023038_movie_t-2.jpg", "2020-0218-103119_023038_movie_t-1.jpg", "2020-0218-103119_023038_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the oncoming vehicle", "environment_perception": "The scene shows a multi-lane two-way urban road with smooth pavement and no center median, bordered by tall buildings and leading toward a pedestrian overpass. Traffic appears moderate. A white box truck ahead in the ego lane continues straight at a steady pace, and a white van farther ahead near the left curb in the same direction is slowing by the crosswalk. On the right side, a black sedan is coming toward the ego vehicle in the opposing lane, while a pedestrian is standing on the left sidewalk near the crosswalk.", "hazard_reasoning": "The main hazard is the black sedan traveling toward the ego car in the oncoming lane. Since it is approaching directly from the opposite direction, it creates a serious collision threat, so the driver should watch the oncoming vehicle closely."}
{"id": "train_09617", "split": "train", "clip_key": "2020-0210-155354_025613_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "025613"}, "frames": ["2020-0210-155354_025613_movie_t-3.jpg", "2020-0210-155354_025613_movie_t-2.jpg", "2020-0210-155354_025613_movie_t-1.jpg", "2020-0210-155354_025613_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "The ego car is traveling on a smooth urban road with two lanes in the same direction and no median, with moderate traffic around it. A black mini MPV ahead in the left lane is moving steadily and is slowing the ego vehicle's progress. On the right, a yellow dump truck is slightly ahead, has its left turn signal on, and starts edging left to merge in front of the ego car due to the traffic pattern, so it could enter the ego lane. Several vehicles are queued farther ahead, keeping the flow slow overall. A side road and crosswalk are visible on the left, but they do not interfere with the current lane.", "hazard_reasoning": "The main risk is the yellow truck moving from the right lane into the left lane ahead of the ego vehicle. Since it is signaling and already beginning the lateral move, the driver should yield to avoid a collision during the merge."}
{"id": "train_09618", "split": "train", "clip_key": "2020-0218-103119_002934_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002934"}, "frames": ["2020-0218-103119_002934_movie_t-3.jpg", "2020-0218-103119_002934_movie_t-2.jpg", "2020-0218-103119_002934_movie_t-1.jpg", "2020-0218-103119_002934_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "A straight urban multilane road with a painted chevron median and clear pavement stretches between tall buildings under bright sunlight, with light to moderate traffic. The ego vehicle is in the left-side roadway section with two lanes traveling the same direction, while opposing traffic is on the right. A dark vehicle ahead in the ego lane continues moving away and is not affecting immediate spacing. A black sedan is coming toward the ego vehicle in the right oncoming lane, and it keeps its line rather than drifting toward the median. A white truck farther ahead in the neighboring same-direction lane is also traveling steadily with traffic.", "hazard_reasoning": "The main concern is the black sedan approaching in the oncoming lane. Since it is moving toward the ego vehicle, it presents a potential collision risk if the current motion continues. The safest response is to stop and wait."}
{"id": "train_09619", "split": "train", "clip_key": "2020-0228-150133_036575_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "036575"}, "frames": ["2020-0228-150133_036575_movie_t-3.jpg", "2020-0228-150133_036575_movie_t-2.jpg", "2020-0228-150133_036575_movie_t-1.jpg", "2020-0228-150133_036575_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to merging white SUV", "environment_perception": "This is a multi-lane urban road with three lanes in the same direction and no median, with clear pavement and moderate traffic flow. A dark sedan ahead in the ego lane is traveling straight and leading the lane. On the right, the curb lane is blocked by a stopped white van and a large bus near the fence, prompting a white SUV in that lane to slow and move left into the ego lane. Another light-colored car continues ahead on the left without influencing the ego vehicle. Traffic lights are visible ahead, but the movement stays steady.", "hazard_reasoning": "The main hazard is the white SUV on the right, which is merging from the adjacent lane into the ego lane because its lane is obstructed. Since it is slowing and shifting laterally into the ego path, the driver needs to yield to avoid a possible side conflict."}
{"id": "train_09620", "split": "train", "clip_key": "2020-0226-101332_011966_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "011966"}, "frames": ["2020-0226-101332_011966_movie_t-3.jpg", "2020-0226-101332_011966_movie_t-2.jpg", "2020-0226-101332_011966_movie_t-1.jpg", "2020-0226-101332_011966_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A light-traffic urban two-way road with one painted center line leads into a small junction under a pedestrian overpass, and the surface shows some patch repairs. Ahead at the intersection, a black van comes in from the left, merges into the ego lane, and continues forward in the same direction, temporarily setting the pace. On the right side near the corner, a cyclist moves slowly toward the crosswalk along the curb but does not enter the lane. Pedestrians are visible on both sidewalks near the railings by the crosswalk, remaining off the road. A circular 30 speed limit sign is posted on the left.", "hazard_reasoning": "The main risk is the black van emerging from the left and merging into the ego lane. Because it enters unexpectedly and takes position ahead of the vehicle, there is a possible collision risk if speed is not reduced, so slowing down and yielding is the safest response."}
{"id": "train_09621", "split": "train", "clip_key": "2020-0203-114632_059660_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "059660"}, "frames": ["2020-0203-114632_059660_movie_t-3.jpg", "2020-0203-114632_059660_movie_t-2.jpg", "2020-0203-114632_059660_movie_t-1.jpg", "2020-0203-114632_059660_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be cautious of cone on the right", "environment_perception": "The scene shows a broad urban road with at least two lanes in each direction on smooth pavement, divided by flexible posts, with light traffic. A large blue-and-white truck is coming toward the camera in the oncoming lanes on the right and continues straight through the junction without entering the ego lane. A small work truck is parked at the left curb ahead, reducing shoulder space but staying outside the travel lane. Several pedestrians are on the left sidewalk near the shops and are not stepping into the road. Near the far side of the junction, an orange traffic cone is placed on the right edge of the ego lane close to the divider, and overhead signals control the intersection.", "hazard_reasoning": "The main concern is the cone sitting on the right side of the lane. It suggests possible nearby road work or a lane obstruction, so it should be treated as a cautionary hazard and avoided."}
{"id": "train_09622", "split": "train", "clip_key": "2020-0203-114632_059660_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "059660"}, "frames": ["2020-0203-114632_059660_movie_t-3.jpg", "2020-0203-114632_059660_movie_t-2.jpg", "2020-0203-114632_059660_movie_t-1.jpg", "2020-0203-114632_059660_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be cautious of cone on the right", "environment_perception": "The scene shows a broad city road with at least two lanes in each direction on smooth pavement, with the opposing traffic separated by flexible posts. Traffic is sparse. A large blue-and-white truck is coming toward the camera in the oncoming lanes on the right and continues straight through the intersection, not drifting into the ego lane. A small work truck is parked along the left curb ahead, which tightens the shoulder but stays out of the lane. Pedestrians are visible on the left sidewalk near the shops and are not entering the roadway. Near the junction, an orange traffic cone sits on the right edge of the ego lane close to the divider. Overhead signals are present at the intersection.", "hazard_reasoning": "The cone positioned on the right side of the lane is the main concern. It suggests possible nearby roadwork or a lane obstruction, so the driver should treat that area cautiously to reduce conflict risk."}
{"id": "train_09623", "split": "train", "clip_key": "2020-0227-104226_054576_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054576"}, "frames": ["2020-0227-104226_054576_movie_t-3.jpg", "2020-0227-104226_054576_movie_t-2.jpg", "2020-0227-104226_054576_movie_t-1.jpg", "2020-0227-104226_054576_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to oncoming vehicle", "environment_perception": "The ego vehicle is moving through an urban area on a two-way road with one lane in each direction, marked by a solid centerline and smooth pavement, while approaching a signalized crosswalk. A black sedan is coming toward the ego car in the opposite lane and stays close to the centerline as it continues straight. In front of the ego vehicle, a silver hatchback moves slowly across the zebra crossing and sets the pace briefly. Several more oncoming cars are visible farther ahead, traveling steadily in their lane, and two pedestrians are standing on the right sidewalk near the crosswalk. No other obstacles are present.", "hazard_reasoning": "The main risk is the black sedan approaching in the opposing lane and closing distance toward the ego vehicle. This creates a potential head-on conflict, so the driver should yield to the oncoming vehicle to maintain safe passage."}
{"id": "train_09624", "split": "train", "clip_key": "2020-0129-105040_000072_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "000072"}, "frames": ["2020-0129-105040_000072_movie_t-3.jpg", "2020-0129-105040_000072_movie_t-2.jpg", "2020-0129-105040_000072_movie_t-1.jpg", "2020-0129-105040_000072_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Yield", "environment_perception": "The scene is an urban multi-lane roadway crossing left to right in front of the ego vehicle, with clear pavement and light to moderate traffic. The ego car is stopped at a zebra crossing. A pedestrian near the front-left moves across the crosswalk from left to right, directly in the ego vehicle’s path. In front of the ego car, a dark van travels leftward through the near lane and exits the junction, while a white pick-up truck in the farther lane continues from right to left, moving away with traffic.", "hazard_reasoning": "The white pick-up truck ahead is crossing from right to left in front of the ego vehicle and partly blocks the forward view. Because it can obscure what is coming next, the safe response is to yield and proceed cautiously to avoid a hidden conflict."}
{"id": "train_09625", "split": "train", "clip_key": "titan_clip_799_000042_movie", "source": {"subset": "titan", "scenario": "clip_799", "frame": "000042"}, "frames": ["titan_clip_799_000042_movie_t-3.jpg", "titan_clip_799_000042_movie_t-2.jpg", "titan_clip_799_000042_movie_t-1.jpg", "titan_clip_799_000042_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cones and truck", "environment_perception": "The scene shows a straight urban road with one narrow lane in each direction and no center divider. Traffic is light, and the pavement is clear except for a construction truck parked ahead on the left side, where several cones create a small work area that narrows and partly encroaches into the driving path. A small white car is visible farther ahead, continuing away in the same direction. No clear signs or speed limits are visible, and buildings line the left roadside.", "hazard_reasoning": "The cones and parked truck indicate a construction zone occupying part of the lane. Because this setup reduces available road space and can obstruct forward travel, it presents a moderate collision risk, so the driver should proceed cautiously through the narrowed section."}
{"id": "train_09626", "split": "train", "clip_key": "2020-0227-104226_054576_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054576"}, "frames": ["2020-0227-104226_054576_movie_t-3.jpg", "2020-0227-104226_054576_movie_t-2.jpg", "2020-0227-104226_054576_movie_t-1.jpg", "2020-0227-104226_054576_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to oncoming vehicle", "environment_perception": "The ego vehicle is moving through an urban area on a two-way road with one lane in each direction, marked by a solid centerline and smooth surface, and it is approaching a signalized crosswalk in moderate traffic. A black sedan in the opposite lane comes toward the ego car and stays close to the centerline while going straight. In front of the ego vehicle, a silver hatchback is crossing the zebra crossing slowly and briefly influences the pace. Several other oncoming vehicles are visible farther ahead, also traveling steadily toward the camera in their lane. Two pedestrians are waiting on the right sidewalk near the crosswalk, and no other obstacles are present.", "hazard_reasoning": "The main hazard is the black sedan approaching in the oncoming lane toward the ego vehicle. Because it is coming straight on and is close to the centerline, the driver should yield to avoid a possible head-on collision."}
{"id": "train_09627", "split": "train", "clip_key": "titan_clip_799_000042_movie", "source": {"subset": "titan", "scenario": "clip_799", "frame": "000042"}, "frames": ["titan_clip_799_000042_movie_t-3.jpg", "titan_clip_799_000042_movie_t-2.jpg", "titan_clip_799_000042_movie_t-1.jpg", "titan_clip_799_000042_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cones and truck", "environment_perception": "The scene is an urban two-way roadway with one narrow lane in each direction and smooth pavement. In the left lane ahead, a construction truck is parked near the curb, and a cluster of traffic cones surrounds it, creating a small work area that partly encroaches on the ego lane and reduces available space. A small white car is visible farther ahead, continuing away in the same direction. No clear signs or speed limits are visible, and buildings with work activity line the left side.", "hazard_reasoning": "The cones and the stationary truck indicate an active construction zone intruding into the lane. Because this setup narrows and obstructs the driving path, it presents a moderate collision risk and calls for careful maneuvering around the work area."}
{"id": "train_09628", "split": "train", "clip_key": "2020-0226-140503_012981_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "012981"}, "frames": ["2020-0226-140503_012981_movie_t-3.jpg", "2020-0226-140503_012981_movie_t-2.jpg", "2020-0226-140503_012981_movie_t-1.jpg", "2020-0226-140503_012981_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows an urban two-way road with one main lane for the ego car and a separated right-side red lane divided by a low yellow median. The road surface is dry and traffic is moderate. A green van ahead in the ego lane is slowing, while a red vehicle farther ahead is moving into the ego lane and limiting the ego car’s progress. To the right, a yellow taxi travels parallel in the red lane without merging, and a white van continues farther ahead near the curb with no impact on the ego path. A 40-speed sign is visible overhead, and a small triangular gore with a side entrance appears on the left.", "hazard_reasoning": "The main concern is the green van directly ahead reducing speed because a vehicle is cutting into the ego lane in front of it. This merge forces the traffic in the ego lane to slow down and raises the chance of a rear-end conflict if the driver does not respond promptly. The appropriate reaction is to reduce speed and keep a safe following gap."}
{"id": "train_09629", "split": "train", "clip_key": "2020-0214-145407_036550_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "036550"}, "frames": ["2020-0214-145407_036550_movie_t-3.jpg", "2020-0214-145407_036550_movie_t-2.jpg", "2020-0214-145407_036550_movie_t-1.jpg", "2020-0214-145407_036550_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance", "environment_perception": "This is a multi-lane urban road running beside an elevated structure, with clear pavement and moderate, steady traffic. A white box truck ahead in the ego lane drifts right and merges into the adjacent right lane, momentarily limiting the ego vehicle’s forward progress. A black taxi farther ahead in the left lane keeps going straight and does not interfere with the ego path, while several other vehicles remain farther in front. Overhead guide signs cross above the roadway, and a signalized intersection appears ahead.", "hazard_reasoning": "The main hazard is the white truck moving out of the ego lane into the right lane directly in front of the car. This lane change narrows the available gap and could require braking, so the safest response is to reduce speed and keep a proper following distance."}
{"id": "train_09630", "split": "train", "clip_key": "2020-0226-140503_028226_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "028226"}, "frames": ["2020-0226-140503_028226_movie_t-3.jpg", "2020-0226-140503_028226_movie_t-2.jpg", "2020-0226-140503_028226_movie_t-1.jpg", "2020-0226-140503_028226_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the stopped van ahead", "environment_perception": "This is an urban two-way road with one lane in each direction, bordered by midrise buildings. The pavement looks smooth and slightly wet, and overall traffic is light to moderate. On the left ahead at a side street, a blue van is stopped and appears ready to turn into the ego vehicle’s lane. A small white van is parked along the left curb near the shops and does not block the lane. In the opposite lane, several oncoming cars are moving through steadily, leaving few openings for a turn.", "hazard_reasoning": "The main concern is the blue van waiting on the left, since it is positioned to enter the ego vehicle’s road. It could merge into the travel path unexpectedly, so the driver should watch it closely and be prepared for it to pull out."}
{"id": "train_09631", "split": "train", "clip_key": "2020-0210-155354_019650_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-155354_019650_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-155354_019650_movie_t-3_augB1.jpg", "2020-0210-155354_019650_movie_t-2_augB1.jpg", "2020-0210-155354_019650_movie_t-1_augB1.jpg", "2020-0210-155354_019650_movie_t_augB1.jpg"], "hazard_type": "lane_change_merge", "severity_level": "HIGH", "warning_content": "Slow down", "environment_perception": "The scene shows an urban two-way road with one lane in each direction, marked by a solid yellow center line and dry pavement. A white van ahead in the ego lane is slowing and moving left to go around a large delivery truck stopped along the left curb, which narrows the path for the ego vehicle. A small white minivan is coming toward it in the opposite lane, so the van has limited room to shift closer to the center line. On the right side, a kei truck is parked at the curb, and pedestrians on the sidewalk remain off the roadway.", "hazard_reasoning": "The main hazard is the white van merging left in front of the ego car while passing the stopped truck. Because this maneuver brings it into the ego vehicle’s path and space is restricted by oncoming traffic, the driver should reduce speed and keep a safe following distance."}
{"id": "train_09632", "split": "train", "clip_key": "2020-0227-104226_054576_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054576"}, "frames": ["2020-0227-104226_054576_movie_t-3.jpg", "2020-0227-104226_054576_movie_t-2.jpg", "2020-0227-104226_054576_movie_t-1.jpg", "2020-0227-104226_054576_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to oncoming vehicle", "environment_perception": "The scene is an urban roadway with one lane in each direction and a solid center line, and the ego vehicle is moving on smooth pavement near a signalized zebra crossing. A black sedan is coming from the opposite direction, traveling straight in the oncoming lane and edging close to the center line as it approaches. In front of the ego car, a silver hatchback is rolling slowly across the crosswalk and momentarily determines the pace. Additional cars are also visible farther ahead in the opposing lane, moving steadily toward the camera, while two pedestrians wait on the right sidewalk near the crossing and no road obstacles appear.", "hazard_reasoning": "The main concern is the black sedan approaching in the oncoming lane toward the ego vehicle. Because it is closing in from ahead and remains near the center line, the driver should give way to reduce the risk of a head-on conflict."}
{"id": "train_09633", "split": "train", "clip_key": "2020-0129-144857_017887_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "017887"}, "frames": ["2020-0129-144857_017887_movie_t-3.jpg", "2020-0129-144857_017887_movie_t-2.jpg", "2020-0129-144857_017887_movie_t-1.jpg", "2020-0129-144857_017887_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging vehicle", "environment_perception": "The scene shows a straight urban arterial with three lanes moving in the same direction between tall buildings. Road conditions look clear, and traffic is flowing at a moderate speed. A black sedan ahead and slightly left is shifting rightward over the dashed lane line into the ego lane, closing the gap. A tall black van remains directly in front in the ego lane and continues straight steadily. Several other cars farther ahead in the center and left lanes also keep going normally. A fenced sidewalk lines the right curb, and pedestrians remain on the sidewalks.", "hazard_reasoning": "The main hazard is the black sedan merging into the ego lane from the left. Because it is moving into the lane ahead of the ego vehicle, it can quickly shrink the following distance and force a sudden response from the driver."}
{"id": "train_09634", "split": "train", "clip_key": "2020-0207-101955_085971_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "085971"}, "frames": ["2020-0207-101955_085971_movie_t-3.jpg", "2020-0207-101955_085971_movie_t-2.jpg", "2020-0207-101955_085971_movie_t-1.jpg", "2020-0207-101955_085971_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the lane-changing truck", "environment_perception": "The scene shows a light-traffic urban expressway with two lanes in the same direction, bending right under an overpass and bordered by tall sound barriers. The road surface is dry and clear. A blue truck directly ahead in the ego lane shifts left into the adjacent lane in front of the ego vehicle. Farther ahead in the left lane, a crane-mounted flatbed truck keeps moving straight. A small white truck is also visible ahead in the right lane at a steady distance. Flexible posts mark a striped buffer on the left, and the right shoulder remains narrow.", "hazard_reasoning": "The main hazard is the blue truck moving left across the ego vehicle’s path. Because it is changing lanes just ahead, it could interfere with the ego car’s forward trajectory, so the driver should stay alert and be ready to adjust."}
{"id": "train_09635", "split": "train", "clip_key": "2020-0214-102601_008502_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "008502"}, "frames": ["2020-0214-102601_008502_movie_t-3.jpg", "2020-0214-102601_008502_movie_t-2.jpg", "2020-0214-102601_008502_movie_t-1.jpg", "2020-0214-102601_008502_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cones", "environment_perception": "The scene shows a modest uphill urban two-way street with one lane in each direction, bordered by apartment buildings and a fenced sidewalk, with clear pavement and sparse traffic. A silver hatchback ahead in the ego lane keeps moving away at a steady pace. Along the left curb, two vans are stopped with their doors open, orange traffic cones are set out nearby, and a person is crouched beside the nearer van, making the left edge of the roadway tighter. A small car comes toward the ego vehicle in the opposite lane and continues past without interfering.", "hazard_reasoning": "The orange cones on the left indicate a work zone or obstruction near the roadway edge. Because they partially constrain the available space, the driver should proceed carefully to avoid brushing into them or the nearby vehicles."}
{"id": "train_09636", "split": "train", "clip_key": "2020-0228-102841_089954_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "089954"}, "frames": ["2020-0228-102841_089954_movie_t-3.jpg", "2020-0228-102841_089954_movie_t-2.jpg", "2020-0228-102841_089954_movie_t-1.jpg", "2020-0228-102841_089954_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging vehicle", "environment_perception": "This is an uphill urban two-way street with one narrow lane in each direction, divided by a solid yellow center line. The road is clear and traffic is sparse. A white hatchback ahead in the ego lane is moving uphill slowly. On the right, a large white truck is stopped near the curb in the opposing lane. On the left by a side entrance, a white sedan is positioned to turn onto the road and could enter the ego lane. A 40 speed sign and no-turn signs appear near the intersection, and cones with barricades mark a small work zone along the left curb.", "hazard_reasoning": "The main concern is the white sedan on the left, which is waiting to turn in and may merge into the ego lane without much warning. This creates a potential lane-change conflict, so the driver should stay alert and keep a safe buffer by adjusting speed or position."}
{"id": "train_09637", "split": "train", "clip_key": "2020-0220-102630_020917_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "020917"}, "frames": ["2020-0220-102630_020917_movie_t-3.jpg", "2020-0220-102630_020917_movie_t-2.jpg", "2020-0220-102630_020917_movie_t-1.jpg", "2020-0220-102630_020917_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop immediately to avoid collision", "environment_perception": "A straight urban arterial with multiple lanes extends ahead, with a fence median dividing opposing traffic; the road surface is dry and traffic is moving slowly in moderate density. In the ego lane, a white sedan ahead shifts right into the next lane in front of the ego vehicle. Farther forward, a large box truck continues creeping along in the middle lane, slowing the overall flow. On the right side, a small covered pickup moves ahead while drifting slightly right within its lane, traveling alongside the ego car.", "hazard_reasoning": "The main risk is the white sedan merging out of the ego lane directly ahead of the ego vehicle. Because it is changing lanes in front of the car, it can narrow the gap quickly and create an abrupt stopping situation to avoid a collision."}
{"id": "train_09638", "split": "train", "clip_key": "2020-0226-140503_043970_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "043970"}, "frames": ["2020-0226-140503_043970_movie_t-3.jpg", "2020-0226-140503_043970_movie_t-2.jpg", "2020-0226-140503_043970_movie_t-1.jpg", "2020-0226-140503_043970_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is a downtown urban road with multiple lanes in both directions, no raised median, and clear pavement. Traffic is moderate, with vehicles queuing ahead at a red light. A Coca-Cola delivery truck is directly ahead and slightly left in the ego lane, moving slowly and restricting forward movement. On the right side, a silver van is traveling toward the ego car in the opposite direction along its lane and is passing close by. Farther ahead in the opposing lanes, a black sedan continues straight in the middle lane without drifting into the ego path.", "hazard_reasoning": "The main concern is the silver van approaching from the opposite direction beside the ego vehicle on the right. Because it is close alongside, there is a possible risk of it cutting in or merging unexpectedly, so the safest response is to slow down and keep distance."}
{"id": "train_09639", "split": "train", "clip_key": "2020-0214-102601_008502_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "008502"}, "frames": ["2020-0214-102601_008502_movie_t-3.jpg", "2020-0214-102601_008502_movie_t-2.jpg", "2020-0214-102601_008502_movie_t-1.jpg", "2020-0214-102601_008502_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cones", "environment_perception": "An uphill urban two-way street with one lane in each direction is lined by apartments and a fenced sidewalk, with light traffic and clear pavement. A silver hatchback ahead in the ego lane keeps moving forward at a steady pace. Along the left curb, two stationary vans with open doors are parked beside several orange traffic cones, and a person is crouched near the closer van, leaving the lane edge tighter there. A small oncoming car travels in its own lane and goes by without interfering with the ego vehicle.", "hazard_reasoning": "The orange cones on the left indicate a work or obstruction area close to the travel path. Because they partially encroach on the usable space beside the lane, the driver should pass with caution to avoid contact."}
{"id": "train_09640", "split": "train", "clip_key": "2020-0228-102841_003738_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "003738"}, "frames": ["2020-0228-102841_003738_movie_t-3.jpg", "2020-0228-102841_003738_movie_t-2.jpg", "2020-0228-102841_003738_movie_t-1.jpg", "2020-0228-102841_003738_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "be aware of the barrier", "environment_perception": "The scene shows a narrow urban two-way road with one lane in each direction, bordered by buildings and no center median. The roadway is clear and traffic is sparse, with no vehicle directly ahead or approaching. On the left, two pedestrians are walking along the storefront side near the curb and remain on the sidewalk. On the right, a pedestrian is standing by the railing near a utility pole without entering the lane. A red barrier is positioned along the right edge of the ego lane and extends slightly into the driving space.", "hazard_reasoning": "The main concern is the red barrier encroaching from the right side of the lane. Because it intrudes into the lane, the driver may need to adjust position or steering to avoid hitting it."}
{"id": "train_09641", "split": "train", "clip_key": "2020-0203-114632_085302_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "085302"}, "frames": ["2020-0203-114632_085302_movie_t-3.jpg", "2020-0203-114632_085302_movie_t-2.jpg", "2020-0203-114632_085302_movie_t-1.jpg", "2020-0203-114632_085302_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows a multi-lane urban road beneath an elevated roadway, with two forward lanes for the ego vehicle and a right-side lane ending in a taper. The surface looks dry and clear, and traffic is flowing at a moderate level. Ahead, a white minivan in the ego lane is slowing as a large box truck from the right begins merging left into the ego lane across the hatched taper area. Vehicles farther ahead remain moving steadily.", "hazard_reasoning": "The key issue is the box truck’s merge into the ego lane, which causes the white minivan ahead to brake. This creates a lane-change merge hazard and increases the chance of a rear-end collision if speed is not reduced in time. The appropriate response is to slow down and keep a safe following distance."}
{"id": "train_09642", "split": "train", "clip_key": "titan_clip_887_000546_movie", "source": {"subset": "titan", "scenario": "clip_887", "frame": "000546"}, "frames": ["titan_clip_887_000546_movie_t-3.jpg", "titan_clip_887_000546_movie_t-2.jpg", "titan_clip_887_000546_movie_t-1.jpg", "titan_clip_887_000546_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is a busy city street with two lanes moving in the same direction and no median, bordered by shops. The road surface is dry and clear, while traffic is moving slowly because of roadside work and parked trucks. A black sedan ahead is coming in from the left lane and merging into the ego lane, briefly tightening the available space. A small white flatbed farther ahead remains in the same lane and is setting a slower pace. A dark van stays beside the ego vehicle in the left lane without changing lanes. On the right curb, a tarp-covered work truck and cones narrow the road and create a constricted section.", "hazard_reasoning": "The main risk is the black sedan merging into the ego lane from the left. The driver should slow down and keep a safe gap to avoid a collision with the merging car."}
{"id": "train_09643", "split": "train", "clip_key": "2020-0226-140503_043970_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "043970"}, "frames": ["2020-0226-140503_043970_movie_t-3.jpg", "2020-0226-140503_043970_movie_t-2.jpg", "2020-0226-140503_043970_movie_t-1.jpg", "2020-0226-140503_043970_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A downtown multi-lane two-way road without a physical median, with smooth pavement and moderate traffic waiting near a red light. A Coca-Cola delivery truck is directly ahead to the left in the ego lane and is moving slowly, restricting forward movement. On the right side, a silver van traveling in the opposite direction passes close alongside the ego car. Farther ahead in the opposing lanes, a black sedan continues straight in the middle lane and does not enter the ego path.", "hazard_reasoning": "The closest concern is the silver van approaching from the opposite direction on the right next to the ego vehicle. Because it is passing so near, it could cut in or merge unexpectedly, so the driver should slow down and keep a safe gap."}
{"id": "train_09644", "split": "train", "clip_key": "2020-0228-102841_003738_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "003738"}, "frames": ["2020-0228-102841_003738_movie_t-3.jpg", "2020-0228-102841_003738_movie_t-2.jpg", "2020-0228-102841_003738_movie_t-1.jpg", "2020-0228-102841_003738_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "be aware of the barrier", "environment_perception": "This is an urban two-way road with one narrow lane in each direction and no median, bordered by building fronts. The pavement is clear and traffic is sparse, with no vehicle directly ahead or approaching. On the left sidewalk, two pedestrians continue along the storefront side near the curb without entering the roadway. On the right, a pedestrian remains by the railing near a utility pole and does not step into traffic. A red barrier is positioned along the right edge of the ego lane and slightly projects into the lane, creating a roadside obstruction.", "hazard_reasoning": "The main concern is the red barrier intruding from the right side into the travel lane. Because it narrows the usable space, the driver may need to adjust steering to pass safely and avoid striking it."}
{"id": "train_09645", "split": "train", "clip_key": "titan_clip_1115_000348_movie", "source": {"subset": "titan", "scenario": "clip_1115", "frame": "000348"}, "frames": ["titan_clip_1115_000348_movie_t-3.jpg", "titan_clip_1115_000348_movie_t-2.jpg", "titan_clip_1115_000348_movie_t-1.jpg", "titan_clip_1115_000348_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield", "environment_perception": "A narrow urban two-way road with brick paving and no median extends between tall buildings, with light traffic. The ego vehicle is traveling in the left lane toward an upcoming intersection. On the left side close to the camera, a white truck is stopped along the curb but extends partly into the ego lane, leaving less room to pass. On the right edge, two pedestrians are walking forward near the travel lane, further tightening the available space. Ahead at the junction, a white car is moving from right to left across the roadway.", "hazard_reasoning": "The main concern is the white truck encroaching into the ego lane from the left. Its intrusion narrows the driving path and may require sudden braking or a sideways maneuver, so the safest response is to yield."}
{"id": "train_09646", "split": "train", "clip_key": "2020-0218-103119_002857_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002857"}, "frames": ["2020-0218-103119_002857_movie_t-3.jpg", "2020-0218-103119_002857_movie_t-2.jpg", "2020-0218-103119_002857_movie_t-1.jpg", "2020-0218-103119_002857_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the minivan", "environment_perception": "The scene shows a multi-lane urban road with a painted chevron median and clear pavement, with traffic moving steadily and not heavily congested. A white van ahead in the ego lane is traveling away at a constant speed. On the far side of the median, a white minivan in the opposing right lane is coming toward the ego vehicle while staying in its lane. At the same time, a dark car is beside the ego car on the left and continues forward in the adjacent same-direction lane.", "hazard_reasoning": "The main risk is the white minivan approaching from the opposite direction in the right lane. The ego vehicle should yield to it to reduce the chance of a collision at the intersection."}
{"id": "train_09647", "split": "train", "clip_key": "2020-0207-101955_111018_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "111018"}, "frames": ["2020-0207-101955_111018_movie_t-3.jpg", "2020-0207-101955_111018_movie_t-2.jpg", "2020-0207-101955_111018_movie_t-1.jpg", "2020-0207-101955_111018_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows a busy multilane urban road beneath an elevated expressway, with traffic moving slowly in a stop-and-go pattern. A blue sedan ahead in the ego lane is reducing speed as a dump truck moves over into that same lane from the left. The truck is slightly farther forward and intruding into the ego lane, tightening the flow. Nearby large trucks in the adjacent left and right lanes are also creeping forward, so there is limited room around the ego vehicle.", "hazard_reasoning": "The main concern is the dump truck merging into the ego lane ahead, which is causing the blue sedan in front to slow down. Since the vehicle is changing lanes into the ego path, the ego car should decelerate and keep a safe following distance."}
{"id": "train_09648", "split": "train", "clip_key": "2020-0213-143552_009672_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009672"}, "frames": ["2020-0213-143552_009672_movie_t-3.jpg", "2020-0213-143552_009672_movie_t-2.jpg", "2020-0213-143552_009672_movie_t-1.jpg", "2020-0213-143552_009672_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cones.", "environment_perception": "The scene shows an urban two-way road with one lane in each direction, bordered by mid-rise buildings and carrying light to moderate traffic. Orange cones are placed along the right edge of the ego lane near a small temporary sign, which narrows the usable space and marks off the area from opposing traffic. A dark hatchback travels ahead in the same lane at a steady pace, slightly limiting the ego vehicle’s forward progress. On the right side, a silver sedan coming the opposite way moves past the coned section while staying near the center line, and a white truck follows behind it, also continuing straight through its lane.", "hazard_reasoning": "The cluster of orange traffic cones on the right side indicates a lane restriction or temporary work zone. This creates a construction-related hazard that the driver should watch carefully, mainly to stay clear of the blocked boundary and avoid drifting into it."}
{"id": "train_09649", "split": "train", "clip_key": "2020-0218-103119_002857_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002857"}, "frames": ["2020-0218-103119_002857_movie_t-3.jpg", "2020-0218-103119_002857_movie_t-2.jpg", "2020-0218-103119_002857_movie_t-1.jpg", "2020-0218-103119_002857_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the minivan", "environment_perception": "A multi-lane urban road with a painted chevron median and clear pavement is visible, with traffic moving lightly to moderately. A white van ahead in the ego direction continues away in the left lane at a steady speed. On the far side of the median, a white minivan in the oncoming right lane is approaching while staying centered in its lane. A dark vehicle is also next to the ego car on the immediate left and gradually pulls ahead in the adjacent lane.", "hazard_reasoning": "The main concern is the white minivan coming toward the ego vehicle in the right oncoming lane. It remains on course, but it is the most relevant potential conflict, so the driver should yield to it to reduce collision risk at the intersection."}
{"id": "train_09650", "split": "train", "clip_key": "titan_clip_1057_000486_movie", "source": {"subset": "titan", "scenario": "clip_1057", "frame": "000486"}, "frames": ["titan_clip_1057_000486_movie_t-3.jpg", "titan_clip_1057_000486_movie_t-2.jpg", "titan_clip_1057_000486_movie_t-1.jpg", "titan_clip_1057_000486_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of the white van merging", "environment_perception": "A narrow urban street with smooth pavement and tall buildings on both sides has light traffic. In front of the ego vehicle, a white van is traveling slowly in the same lane and drifting slightly to pass roadside obstacles; parked vehicles along the lane are restricting the available space. On the right side, two pedestrians are walking near the curb next to a taped-off sidewalk and are partly extending into the roadway, close to the ego path. No other moving vehicles are present. A round no-parking sign stands on the left, while cones and barriers on the right further tighten the drivable lane.", "hazard_reasoning": "The main concern is the white van ahead, which is moving within the ego lane and may shift unexpectedly to get around the parked vehicles. Because its path is constrained, the van could merge or reposition without much warning, so the driver should watch its movement closely."}
{"id": "train_09651", "split": "train", "clip_key": "2020-0213-143552_009672_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009672"}, "frames": ["2020-0213-143552_009672_movie_t-3.jpg", "2020-0213-143552_009672_movie_t-2.jpg", "2020-0213-143552_009672_movie_t-1.jpg", "2020-0213-143552_009672_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cones.", "environment_perception": "A two-way urban street with one lane in each direction stretches between mid-rise buildings, with smooth pavement and light-to-moderate traffic. Orange cones are placed along the right edge of the ego lane near a small temporary sign, creating a narrowed center area and marking separation from opposing traffic. A dark hatchback ahead in the ego lane continues straight at a steady pace, slightly limiting the ego vehicle's speed. On the right, an oncoming silver sedan moves forward in its lane beside the cones and stays near the center line. Behind it, an oncoming white truck also proceeds straight through the coned section.", "hazard_reasoning": "The line of orange traffic cones on the right side indicates a lane restriction or possible road work area. This makes the coned boundary the main concern, as the driver should stay alert and avoid drifting into the blocked section."}
{"id": "train_09652", "split": "train", "clip_key": "2020-0205-152530_039982_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "039982"}, "frames": ["2020-0205-152530_039982_movie_t-3.jpg", "2020-0205-152530_039982_movie_t-2.jpg", "2020-0205-152530_039982_movie_t-1.jpg", "2020-0205-152530_039982_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A straight urban multi-lane road passes tall buildings, with smooth pavement and a broad crosswalk at an intersection. Traffic is moving steadily at a moderate pace. In front of the ego vehicle, a black sedan is shifting from the ego lane into the right lane, crossing the dashed lane marking and opening up space ahead. A city bus in the right lane is slightly ahead and continues forward at about the same speed, so the sedan merges in ahead of it. Farther ahead, a small dark hatchback and several other cars keep moving in the center lanes, maintaining the overall flow.", "hazard_reasoning": "The main hazard is the black sedan merging right from the ego lane into the adjacent lane. Because this lane change happens unexpectedly, the driver may need to reduce speed to keep a safe gap and avoid a possible collision."}
{"id": "train_09653", "split": "train", "clip_key": "2020-0218-103119_002857_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002857"}, "frames": ["2020-0218-103119_002857_movie_t-3.jpg", "2020-0218-103119_002857_movie_t-2.jpg", "2020-0218-103119_002857_movie_t-1.jpg", "2020-0218-103119_002857_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the minivan", "environment_perception": "This is a multi-lane urban roadway with a painted chevron median and clear pavement, with traffic moving at a moderate, steady flow. A white van ahead in the same direction continues pulling away in the left lane. On the far side of the median, a white minivan in the oncoming right lane is traveling toward the ego vehicle and stays within its lane. Meanwhile, a dark car on the immediate left comes up alongside and moves slightly ahead in the adjacent same-direction lane.", "hazard_reasoning": "The main hazard is the white minivan approaching from the opposite direction in the right lane. It presents a possible collision risk at the intersection, so the driver should yield to it."}
{"id": "train_09654", "split": "train", "clip_key": "2020-0129-144857_042898_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "042898"}, "frames": ["2020-0129-144857_042898_movie_t-3.jpg", "2020-0129-144857_042898_movie_t-2.jpg", "2020-0129-144857_042898_movie_t-1.jpg", "2020-0129-144857_042898_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Start moving", "environment_perception": "The scene shows a shaded urban multi-lane roadway beneath an elevated expressway, with a guardrail along the right side and dry pavement. Traffic is congested and moving very slowly. A black van ahead in the ego lane inches forward and progressively drifts left out of the lane. Farther ahead, a box truck is stopped or waiting near the signal, controlling the traffic flow. In the left adjacent lane, a white hatchback is also moving slowly and staying roughly parallel to the van, leaving little room to merge. A yellow merge-warning sign is visible on the right, with blue overhead direction signs above.", "hazard_reasoning": "The main hazard is the black van leaving the ego lane in response to the congestion. Its gradual unexpected lane change creates a merge conflict and could cut into the ego vehicle’s path, so the driver should prepare to move and keep a safe following gap."}
{"id": "train_09655", "split": "train", "clip_key": "2020-0131-135401_008855_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008855"}, "frames": ["2020-0131-135401_008855_movie_t-3.jpg", "2020-0131-135401_008855_movie_t-2.jpg", "2020-0131-135401_008855_movie_t-1.jpg", "2020-0131-135401_008855_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "The scene is an urban two-way road where the ego vehicle is moving in the left lane on smooth asphalt with no median. Traffic is light, but the roadway narrows because of roadside construction. A white box truck ahead in the same lane keeps going straight at a slow speed and appears to be setting the pace. On the left near the crosswalk, two pedestrians are standing on the curb and looking toward the road, while on the right shoulder a construction worker faces traffic beside the work area. The overhead signal is green for the ego direction. Red cones and barricades line the right side around parked construction trucks and excavators, limiting the available lane space.", "hazard_reasoning": "The main hazard is the line of red cones intruding into the driving lane on the right. They indicate an active construction zone narrowing the path, so the driver needs to pass them cautiously to avoid contact and keep safe progress."}
{"id": "train_09656", "split": "train", "clip_key": "2020-0213-143552_082629_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "082629"}, "frames": ["2020-0213-143552_082629_movie_t-3.jpg", "2020-0213-143552_082629_movie_t-2.jpg", "2020-0213-143552_082629_movie_t-1.jpg", "2020-0213-143552_082629_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck's lane change", "environment_perception": "The scene shows an urban expressway with two lanes in the same direction, bordered by tall sound barriers, with a smooth road surface and light traffic as the vehicle goes beneath an overpass. Bollards and a hatched divider appear along the left side. A blue truck ahead in the ego lane shifts left into the adjacent left lane, cutting across the ego vehicle’s forward path while merging. No nearby road users, traffic lights, or speed signs stand out.", "hazard_reasoning": "The main risk is the blue truck moving across in front of the ego car while changing lanes into the left lane. This merge can narrow the available space and may force the driver to slow down or adjust position."}
{"id": "train_09657", "split": "train", "clip_key": "2020-0212-102546_036958_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "036958"}, "frames": ["2020-0212-102546_036958_movie_t-3.jpg", "2020-0212-102546_036958_movie_t-2.jpg", "2020-0212-102546_036958_movie_t-1.jpg", "2020-0212-102546_036958_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A city multilane roadway beneath an elevated structure has three lanes moving in the same direction, with clear pavement and moderate traffic. The ego vehicle is in the left lane. A white truck ahead is shifting right into the adjacent lane in front of the ego car, crossing the dashed lane line. On the right, a silver hatchback remains slightly ahead and continues straight at about the same speed, leaving little room in the merge area. Farther up in the right lane, a larger box truck is moving slowly, with a line of vehicles behind it, which is slowing traffic there. A round sign on the left indicates a 50 speed limit, and tall buildings border the road.", "hazard_reasoning": "The key hazard is the white truck moving rightward into the lane ahead of the ego vehicle. Since this lane change places it in front of the driver, the appropriate response is to reduce speed and keep a safe gap to avoid contact."}
{"id": "train_09658", "split": "train", "clip_key": "2020-0227-104226_054593_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054593"}, "frames": ["2020-0227-104226_054593_movie_t-3.jpg", "2020-0227-104226_054593_movie_t-2.jpg", "2020-0227-104226_054593_movie_t-1.jpg", "2020-0227-104226_054593_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to oncoming vehicle", "environment_perception": "The scene shows an urban two-way street with one lane in each direction and no median, with smooth pavement and moderate traffic. The ego vehicle is in the left lane, heading toward a signalized pedestrian crossing. A black hatchback is coming toward the ego car on the right side of the roadway, continuing forward steadily. A silver hatchback is parked along the left curb ahead, which makes the available lane space tighter. A pedestrian is waiting on the left sidewalk near the crossing and has not entered the road. The pedestrian signal displays a green walk indication.", "hazard_reasoning": "The main risk is the black hatchback approaching directly toward the ego vehicle on the right side of the road. Since it is coming head-on in the ego lane path, the driver should yield to reduce the chance of a collision."}
{"id": "train_09659", "split": "train", "clip_key": "2020-0131-135401_008855_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "008855"}, "frames": ["2020-0131-135401_008855_movie_t-3.jpg", "2020-0131-135401_008855_movie_t-2.jpg", "2020-0131-135401_008855_movie_t-1.jpg", "2020-0131-135401_008855_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "This is an urban two-way road where the ego vehicle is in the left lane, on smooth pavement with no median. Traffic is light, but movement slows near a roadside work area. A white box truck ahead keeps going straight in the ego lane at reduced speed and appears to be leading the flow through the narrowed stretch. On the left near the crosswalk, two pedestrians are standing on the curb and looking toward the road, while on the right shoulder a construction worker faces traffic beside the work zone. The overhead signal is green for the ego direction. Along the right side, red cones and barricades surround parked construction trucks and excavators, leaving less usable lane space.", "hazard_reasoning": "The main concern is the red cones encroaching from the right side of the lane. They indicate an active construction area narrowing the roadway, so the driver needs to pass them carefully to avoid contact and continue safely."}
{"id": "train_09660", "split": "train", "clip_key": "2020-0226-140503_043970_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "043970"}, "frames": ["2020-0226-140503_043970_movie_t-3.jpg", "2020-0226-140503_043970_movie_t-2.jpg", "2020-0226-140503_043970_movie_t-1.jpg", "2020-0226-140503_043970_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is an urban multi-lane two-way road without a physical divider, with smooth asphalt and moderate traffic as vehicles queue ahead at a red light. A Coca-Cola delivery truck is directly ahead and slightly left in the ego lane, moving slowly and holding up the flow. On the right side, a silver van is traveling in the opposite direction in the adjacent lane and passing close by. Farther ahead in the opposing lanes, a black sedan continues straight in the middle lane and does not enter the ego vehicle’s path.", "hazard_reasoning": "The silver van is approaching from the opposite direction very near the ego vehicle’s right side. Because it is alongside the car, there is a risk it could drift or cut into the ego lane unexpectedly, so slowing down is the safest response to keep a proper gap."}
{"id": "train_09661", "split": "train", "clip_key": "2020-0218-103119_057301_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "057301"}, "frames": ["2020-0218-103119_057301_movie_t-3.jpg", "2020-0218-103119_057301_movie_t-2.jpg", "2020-0218-103119_057301_movie_t-1.jpg", "2020-0218-103119_057301_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "An urban two-lane roadway runs beneath an elevated structure with moderate, slow-moving traffic. Both lanes travel in the same direction, separated by a dashed line, with a curb on the left and a guardrail on the right. A white box truck ahead in the ego lane starts moving right toward the adjacent lane, briefly restricting the ego vehicle’s progress. In the right lane, a white minibus is slightly ahead alongside it, leaving limited room for the truck’s merge, while a black SUV farther ahead continues normally.", "hazard_reasoning": "The main hazard is the white truck merging across in front of the ego vehicle into the right lane. Because its movement is directly ahead and into the neighboring lane, the driver should slow down to keep a safe following distance and avoid conflict with the merge."}
{"id": "train_09662", "split": "train", "clip_key": "2020-0227-104226_054593_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054593"}, "frames": ["2020-0227-104226_054593_movie_t-3.jpg", "2020-0227-104226_054593_movie_t-2.jpg", "2020-0227-104226_054593_movie_t-1.jpg", "2020-0227-104226_054593_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to oncoming vehicle", "environment_perception": "The scene shows an urban two-way road with one lane in each direction and no median, with smooth pavement and moderate traffic. The ego vehicle is in the left lane, heading toward a signalized pedestrian crossing. A black hatchback is moving straight toward the ego car on the right side of the roadway. A silver hatchback is parked along the left curb ahead, leaving less room to pass. A pedestrian is waiting on the left sidewalk near the crosswalk and does not enter the road, while the pedestrian signal shows a green walk light.", "hazard_reasoning": "The main concern is the black hatchback coming directly toward the ego vehicle on the right side. It is approaching head-on in the ego lane area, creating a potential collision risk, so the appropriate response is to yield."}
{"id": "train_09663", "split": "train", "clip_key": "2020-0204-150838_080625_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "080625"}, "frames": ["2020-0204-150838_080625_movie_t-3.jpg", "2020-0204-150838_080625_movie_t-2.jpg", "2020-0204-150838_080625_movie_t-1.jpg", "2020-0204-150838_080625_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck beside you", "environment_perception": "A quiet suburban two-way roadway with one lane in each direction and double yellow centerlines passes guardrails, roadside equipment, and an overhead gantry beneath an overpass. The pavement appears dry and traffic is sparse. The ego vehicle is moving in the left-hand lane next to a white semi truck that is slightly ahead and traveling in the same direction. A dark van is farther ahead, continuing forward without influencing the ego vehicle. No oncoming traffic is visible, and the construction machinery and trucks on the right shoulder remain beyond the guardrail.", "hazard_reasoning": "The main concern is the white semi truck traveling very close beside the ego vehicle. Because it is alongside and slightly ahead, it could limit visibility and potentially drift or merge into the ego lane without much warning. This makes the truck beside you the most relevant hazard, requiring caution."}
{"id": "train_09664", "split": "train", "clip_key": "titan_clip_588_000582_movie", "source": {"subset": "titan", "scenario": "clip_588", "frame": "000582"}, "frames": ["titan_clip_588_000582_movie_t-3.jpg", "titan_clip_588_000582_movie_t-2.jpg", "titan_clip_588_000582_movie_t-1.jpg", "titan_clip_588_000582_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cone", "environment_perception": "This is an urban two-lane street with buildings close to the curb, no median, and clear pavement. Traffic is flowing steadily in both directions. A dark vehicle ahead in the ego lane keeps going straight at a steady pace. An oncoming silver car travels in the opposite lane and passes near the center line without drifting over. On the left, pedestrians near the shopfronts stay by the curb and behind barriers. The left roadside also contains a work area with orange cones, barricades, and signs, including an orange traffic cone on the left side of the road, and a small service truck parked nearby, which slightly reduces the shoulder space.", "hazard_reasoning": "The main concern is the orange traffic cone on the left side of the road. It marks a roadside work zone and signals an obstruction with less available width, so the driver needs to pass carefully to avoid hitting it and keep a safe path."}
{"id": "train_09665", "split": "train", "clip_key": "2020-0213-143552_069140_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "069140"}, "frames": ["2020-0213-143552_069140_movie_t-3.jpg", "2020-0213-143552_069140_movie_t-2.jpg", "2020-0213-143552_069140_movie_t-1.jpg", "2020-0213-143552_069140_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain a safe following distance.", "environment_perception": "The scene shows a dry, mostly clear urban multilane road under an overpass as the vehicles approach a broad signalized intersection. A white box truck ahead in the ego lane is slowing and drifting left to enter the left lane, becoming the main moving vehicle in front. On the right, a green dump truck travels forward in the adjacent lane at a similar pace and stays alongside. A small dark car is farther ahead to the left, continuing straight through the junction without entering the ego path. An overhead signal structure and bright sun glare are present.", "hazard_reasoning": "The white truck is merging left from the ego lane while reducing speed, which creates the main hazard. Its movement can overlap the ego vehicle’s path and forces a speed reduction, so the safest response is to slow down and keep a proper following gap."}
{"id": "train_09666", "split": "train", "clip_key": "2020-0218-103119_001006_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "001006"}, "frames": ["2020-0218-103119_001006_movie_t-3.jpg", "2020-0218-103119_001006_movie_t-2.jpg", "2020-0218-103119_001006_movie_t-1.jpg", "2020-0218-103119_001006_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the van's lane change", "environment_perception": "The scene shows a multi-lane urban two-way road with smooth pavement and no center barrier, with light to moderate traffic moving normally. A white van ahead in the ego lane activates a rightward lane change into the adjacent lane and then pulls farther away from the ego vehicle. A dark minivan ahead-left continues straight in the leftmost lane without shifting position, and an oncoming small white car stays in its own right-side lane with no interaction. Pedestrians are waiting near the left curb by a broad crosswalk.", "hazard_reasoning": "The main concern is the white van ahead making a lane change from the ego lane into the right lane. Although it is moving away, the lateral maneuver could still narrow available space and call for a path adjustment, so this lane change is the most relevant hazard to monitor."}
{"id": "train_09667", "split": "train", "clip_key": "2020-0227-104226_054593_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054593"}, "frames": ["2020-0227-104226_054593_movie_t-3.jpg", "2020-0227-104226_054593_movie_t-2.jpg", "2020-0227-104226_054593_movie_t-1.jpg", "2020-0227-104226_054593_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to oncoming vehicle", "environment_perception": "An urban two-way road with one lane in each direction and no median has clear pavement and moderate traffic. The ego vehicle is in the left lane, nearing a signalized pedestrian crossing. A black hatchback is coming toward the ego car on the right side of the roadway, continuing straight ahead. A silver hatchback is parked by the left curb in front, reducing the space available to drive. A pedestrian is standing on the left sidewalk near the crosswalk and does not enter the road. The pedestrian signal is showing a green walk phase.", "hazard_reasoning": "The main concern is the black hatchback approaching directly toward the ego vehicle from the opposite direction. Since it is coming head-on in the ego lane area, the safest action is to yield and avoid a possible collision."}
{"id": "train_09668", "split": "train", "clip_key": "titan_clip_588_000582_movie", "source": {"subset": "titan", "scenario": "clip_588", "frame": "000582"}, "frames": ["titan_clip_588_000582_movie_t-3.jpg", "titan_clip_588_000582_movie_t-2.jpg", "titan_clip_588_000582_movie_t-1.jpg", "titan_clip_588_000582_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cone", "environment_perception": "This is a built-up two-lane street with buildings close to the curb, no median, and clear pavement as traffic proceeds in both directions at a moderate pace. A dark vehicle ahead in the ego lane keeps moving straight and roughly leads the flow. On the right, a silver oncoming car travels in its lane and comes near the center line without crossing it. On the left, pedestrians near the storefronts stay by the curb behind barriers. The left side also contains a roadside work area with orange cones, barricades, and signs, and a small service truck parked there, which makes the shoulder slightly narrower.", "hazard_reasoning": "The orange traffic cone on the left side of the road marks the key hazard. It signals a partial obstruction and less available width beside the lane, so the driver should steer carefully to stay clear of it and avoid contact."}
{"id": "train_09669", "split": "train", "clip_key": "2020-0220-102630_034527_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "034527"}, "frames": ["2020-0220-102630_034527_movie_t-3.jpg", "2020-0220-102630_034527_movie_t-2.jpg", "2020-0220-102630_034527_movie_t-1.jpg", "2020-0220-102630_034527_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down for vehicle merging ahead", "environment_perception": "An urban two-lane roadway bends to the right beside mid-rise buildings, with a metal guardrail lining the right side; the dry surface appears worn and traffic is flowing moderately. Ahead, a green sedan is moving from the left lane into the ego lane and momentarily overlaps the ego vehicle's path. A white car on the right keeps traveling through the adjacent same-direction lane around the curve at a similar pace without merging. On the left near the curb and trees, a white box truck is stopped by the roadside and remains out of traffic.", "hazard_reasoning": "The main concern is the green sedan ahead, which is changing from the left lane into the ego lane. Because that merge can cut into the ego vehicle's space, the safest response is to slow down and keep a proper gap for the vehicle merging ahead."}
{"id": "train_09670", "split": "train", "clip_key": "titan_clip_1254_000300_movie", "source": {"subset": "titan", "scenario": "clip_1254", "frame": "000300"}, "frames": ["titan_clip_1254_000300_movie_t-3.jpg", "titan_clip_1254_000300_movie_t-2.jpg", "titan_clip_1254_000300_movie_t-1.jpg", "titan_clip_1254_000300_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the white van", "environment_perception": "This is an urban two-way road with one lane in each direction, bordered by mid-rise buildings and smooth pavement, with moderate traffic flow. A white van is coming toward the ego vehicle in the opposing lane on the right. Ahead in the ego lane, a small truck is moving slowly in the same direction, which limits forward progress. Several more oncoming vehicles follow behind the van, and parked cars along the left curb reduce the available road width.", "hazard_reasoning": "The main concern is the white van closing in from the oncoming lane toward the ego vehicle. Its proximity in the travel space raises the chance of a side-by-side conflict, so the driver should keep clear and maintain a safe buffer."}
{"id": "train_09671", "split": "train", "clip_key": "titan_clip_73_000396_movie", "source": {"subset": "titan", "scenario": "clip_73", "frame": "000396"}, "frames": ["titan_clip_73_000396_movie_t-3.jpg", "titan_clip_73_000396_movie_t-2.jpg", "titan_clip_73_000396_movie_t-1.jpg", "titan_clip_73_000396_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "The scene shows a narrow urban side street between buildings with no centerline and light traffic on smooth pavement. On the right, a worker is moving a large blue tarp across part of the road, reducing the available space, while an orange traffic cone on the left side marks the work zone. A black van is parked near a building entrance on the right, further limiting passage, and a blue right-turn arrow sign stands ahead at the small intersection.", "hazard_reasoning": "The orange cone on the left indicates ongoing road work and, together with the tarp, it narrows the travel path. Because the usable lane is partially blocked, the driver needs to pass cautiously to avoid contact with the work area."}
{"id": "train_09672", "split": "train", "clip_key": "2020-0221-115122_031676_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "031676"}, "frames": ["2020-0221-115122_031676_movie_t-3.jpg", "2020-0221-115122_031676_movie_t-2.jpg", "2020-0221-115122_031676_movie_t-1.jpg", "2020-0221-115122_031676_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging sedan ahead", "environment_perception": "An urban multi-lane road passes beneath an elevated expressway, with three lanes in the same direction, a guardrail on the right, and dry pavement. Traffic is dense and moving slowly. A black sedan directly ahead of the ego vehicle in the center lane signals and moves into the right lane to bypass the congestion, briefly entering the ego car’s path. A dark SUV a little farther ahead in the right lane is also slowing in the queue, which narrows the available space as the sedan merges and effectively becomes the pace vehicle ahead. Several white vans and cars farther forward continue creeping in the center and left lanes, sustaining the traffic buildup. The viaduct supports and railings are beside the roadway but do not block the lanes.", "hazard_reasoning": "The main hazard is the black sedan ahead shifting right out of the ego lane due to congestion. This lane-change merge could cut in unexpectedly, so the driver should stay alert and prepare for the vehicle ahead to enter the lane."}
{"id": "train_09673", "split": "train", "clip_key": "2020-0210-155354_045179_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "045179"}, "frames": ["2020-0210-155354_045179_movie_t-3.jpg", "2020-0210-155354_045179_movie_t-2.jpg", "2020-0210-155354_045179_movie_t-1.jpg", "2020-0210-155354_045179_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the merging hatchback", "environment_perception": "A dry urban divided road with two lanes in each direction and a painted double white center median has moderate traffic. A white hatchback ahead is shifting from the ego lane into the left lane, moving out of the car’s direct path. A dark sedan continues ahead in the ego lane at nearly the same speed, acting as the lead vehicle. On the opposite side of the median, a white truck and other oncoming cars travel steadily in their own lane.", "hazard_reasoning": "The main concern is the white hatchback completing its lane change into the left lane after leaving the ego lane. Because this movement could affect the ego vehicle’s space, it should be watched closely and driven around with caution."}
{"id": "train_09674", "split": "train", "clip_key": "titan_clip_1254_000300_movie", "source": {"subset": "titan", "scenario": "clip_1254", "frame": "000300"}, "frames": ["titan_clip_1254_000300_movie_t-3.jpg", "titan_clip_1254_000300_movie_t-2.jpg", "titan_clip_1254_000300_movie_t-1.jpg", "titan_clip_1254_000300_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the white van", "environment_perception": "A smooth urban two-way road with one lane in each direction passes between mid-rise buildings, and traffic appears moderate. A white van in the oncoming lane on the right is moving toward the ego vehicle. Ahead in the ego lane, a small truck is traveling slowly in the same direction, limiting the ego car's progress. Additional oncoming vehicles are visible behind the van, and parked cars along the left curb reduce the available road width.", "hazard_reasoning": "The main concern is the white van closing in through the oncoming lane toward the ego car. Its approach and slight encroachment into the travel space raise the chance of a collision, so the driver should steer carefully to keep a safe margin."}
{"id": "train_09675", "split": "train", "clip_key": "titan_clip_73_000396_movie", "source": {"subset": "titan", "scenario": "clip_73", "frame": "000396"}, "frames": ["titan_clip_73_000396_movie_t-3.jpg", "titan_clip_73_000396_movie_t-2.jpg", "titan_clip_73_000396_movie_t-1.jpg", "titan_clip_73_000396_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "This is a narrow urban side street with no centerline, bordered by buildings and light traffic. On the right, a worker is dragging a large blue tarp partly across the road, reducing the available space. An orange traffic cone on the left side highlights the work zone, while a black van parked by the curb near a building entrance further limits room to pass. A blue right-arrow sign near the small intersection ahead shows a directional restriction.", "hazard_reasoning": "The orange cone on the left marks an active work area. Together with the tarp extending into the roadway, it narrows the lane and creates a construction-related obstruction that requires careful manoeuvring to avoid contact."}
{"id": "train_09676", "split": "train", "clip_key": "2020-0214-102601_072311_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "072311"}, "frames": ["2020-0214-102601_072311_movie_t-3.jpg", "2020-0214-102601_072311_movie_t-2.jpg", "2020-0214-102601_072311_movie_t-1.jpg", "2020-0214-102601_072311_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows a straight urban arterial in left-hand traffic with smooth road surface and a metal guardrail along the right side. Traffic is moving steadily. In front of the ego vehicle, a black SUV is shifting right into the diverging lane toward the side road, leaving the ego lane. Farther ahead, a white hatchback in the adjacent left lane continues straight, while a white van remains ahead in the main flow. The rightmost lane branches off clearly beside the guardrail, with dashed lane markings and directional arrows indicating the split.", "hazard_reasoning": "The key hazard is the black SUV ahead moving right out of the ego lane and into the adjacent diverging lane. This lane change/merge creates a need to reduce speed and keep a safe gap, since the SUV’s movement could still interfere with the ego vehicle’s path if not handled cautiously."}
{"id": "train_09677", "split": "train", "clip_key": "2020-0205-103411_062704_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "062704"}, "frames": ["2020-0205-103411_062704_movie_t-3.jpg", "2020-0205-103411_062704_movie_t-2.jpg", "2020-0205-103411_062704_movie_t-1.jpg", "2020-0205-103411_062704_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the stopped truck", "environment_perception": "The scene shows a wide urban arterial with three lanes in each direction, separated by a low planted median. The road surface is clear and traffic is flowing steadily at a light to moderate level. On the left side ahead, a white truck is pulled over near the curb beside shopfronts and appears to be waiting for a turn onto the roadway. A smaller white truck is traveling behind it in the same lane, while a dark box truck continues straight in the opposite direction farther ahead. A bicyclist is visible near the far left curb by the sidewalk, but stays off the roadway. No clear speed limit signs or traffic signals are visible.", "hazard_reasoning": "The main concern is the white truck stopped on the left, since it is positioned as if preparing to enter or turn onto the ego vehicle's road. If it begins moving, it could force a speed adjustment or lane change, so it should be monitored closely."}
{"id": "train_09678", "split": "train", "clip_key": "2020-0210-155354_035443_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "035443"}, "frames": ["2020-0210-155354_035443_movie_t-3.jpg", "2020-0210-155354_035443_movie_t-2.jpg", "2020-0210-155354_035443_movie_t-1.jpg", "2020-0210-155354_035443_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of scooter cutting in", "environment_perception": "A dense urban roadway with three lanes in the same direction and smooth pavement is carrying slow, stop-and-go traffic. A fence runs along the left curb, and there is no visible median. Directly ahead in the center lane, a black hatchback is creeping and then pausing, setting the pace for the ego vehicle. A scooter is moving forward between the right and center lanes in front of the ego car, trying to get past the traffic and possibly slip into the ego lane. A white van on the left is inching along parallel in the curb lane, while a dark sedan on the right is also moving slowly in the outer lane near the vehicle ahead. Large blue overhead direction signs appear above the road.", "hazard_reasoning": "The main concern is the scooter ahead, which is filtering between the right and center lanes to advance through traffic. Because it is cutting across lane space, it could merge into the ego vehicle's path without much warning. The driver should expect this movement and keep a safe buffer."}
{"id": "train_09679", "split": "train", "clip_key": "titan_clip_1254_000300_movie", "source": {"subset": "titan", "scenario": "clip_1254", "frame": "000300"}, "frames": ["titan_clip_1254_000300_movie_t-3.jpg", "titan_clip_1254_000300_movie_t-2.jpg", "titan_clip_1254_000300_movie_t-1.jpg", "titan_clip_1254_000300_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the white van", "environment_perception": "The scene shows an urban two-way road with one lane in each direction, bordered by mid-rise buildings and a smooth roadway with moderate traffic. A white van is approaching in the oncoming lane on the right, while a small truck ahead in the ego lane is moving slowly and limiting forward progress. More oncoming vehicles follow behind the van, and parked cars along the left curb further reduce the available driving space.", "hazard_reasoning": "The main concern is the white van coming toward the ego vehicle in the opposite lane. Because it is close and moving into the driver’s path of travel, there is a meaningful collision risk, so the driver should keep clear and maintain a safe margin."}
{"id": "train_09680", "split": "train", "clip_key": "2020-0129-105040_046946_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "046946"}, "frames": ["2020-0129-105040_046946_movie_t-3.jpg", "2020-0129-105040_046946_movie_t-2.jpg", "2020-0129-105040_046946_movie_t-1.jpg", "2020-0129-105040_046946_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the sedan beside you", "environment_perception": "The scene shows an urban two-lane roadway passing beneath an elevated expressway, with a guardrail on the right and a gentle right-hand bend. A white sedan is traveling parallel to the ego vehicle in the left lane, staying close beside it. Farther ahead in that same lane, a silver kei van continues through the curve, while several small vans and cars are visible ahead in both lanes with steady spacing and no blockage of the ego lane. A pedestrian footbridge crosses overhead, and overall traffic flow remains smooth.", "hazard_reasoning": "The main concern is the white sedan alongside the ego vehicle in the left lane. Because it is traveling very close next to the ego car, it may merge or limit available space unexpectedly, so this side-by-side vehicle should be watched carefully."}
{"id": "train_09681", "split": "train", "clip_key": "titan_clip_280_001104_movie", "source": {"subset": "titan", "scenario": "clip_280", "frame": "001104"}, "frames": ["titan_clip_280_001104_movie_t-3.jpg", "titan_clip_280_001104_movie_t-2.jpg", "titan_clip_280_001104_movie_t-1.jpg", "titan_clip_280_001104_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is a tight urban side street with one lane in each direction, bordered by buildings and no median. The road surface is clear and traffic is sparse, with no cars ahead or approaching. On the right, a pedestrian is standing near a loading area by the curb, and another worker is handling a cart beside stacked boxes, sometimes edging closer to the roadway. A line of orange traffic cones runs along the left edge, marking a pedestrian walkway and narrowing the available driving space, while the boxes and carts on the right add more roadside clutter.", "hazard_reasoning": "The cone line on the left shows a pedestrian walkway and signals that people may enter the road area. Because the lane is narrowed and pedestrians are close to the travel path, the safest response is to slow down and stay alert for anyone stepping into the roadway."}
{"id": "train_09682", "split": "train", "clip_key": "2020-0217-110854_046566_movie", "source": {"subset": "drama", "scenario": "2020-0217-110854", "frame": "046566"}, "frames": ["2020-0217-110854_046566_movie_t-3.jpg", "2020-0217-110854_046566_movie_t-2.jpg", "2020-0217-110854_046566_movie_t-1.jpg", "2020-0217-110854_046566_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Start moving", "environment_perception": "A dry, clearly marked multi-lane urban road passes beneath an elevated expressway, with a guardrail along the right side and light traffic overall. A black van is directly ahead in the ego lane and is pulling farther away. A white minivan is slightly ahead in the left lane, traveling steadily and staying within its lane, while a fenced construction area sits beyond the right guardrail and trees with a low hedge line the left side. No notable signals or special road signs stand out.", "hazard_reasoning": "The black van ahead in the ego lane is accelerating away from the ego vehicle. As the lead vehicle increases its gap, the driver should move forward to keep an appropriate following distance and sustain traffic flow."}
{"id": "train_09683", "split": "train", "clip_key": "2020-0205-103411_071828_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "071828"}, "frames": ["2020-0205-103411_071828_movie_t-3.jpg", "2020-0205-103411_071828_movie_t-2.jpg", "2020-0205-103411_071828_movie_t-1.jpg", "2020-0205-103411_071828_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of the truck", "environment_perception": "A multi-lane urban roadway with at least three lanes in the same direction bends slightly to the right, with dry, clear pavement and moderate traffic. A gray truck ahead of the ego vehicle is shifting into the left lane, moving away from the ego lane. To the right, a black minivan is traveling at about the same pace and fills the neighboring space, making a move to the right less available. A motorcyclist farther ahead near the left curb continues straight at a slower speed, close to the truck’s new path. Overhead gantry signs and traffic lights are visible near the next junction.", "hazard_reasoning": "The main concern is the gray truck ahead changing left across the ego vehicle’s forward area. Its lane change could intrude into the ego lane, so the driver should monitor it and keep a safe buffer."}
{"id": "train_09684", "split": "train", "clip_key": "titan_clip_880_000054_movie", "source": {"subset": "titan", "scenario": "clip_880", "frame": "000054"}, "frames": ["titan_clip_880_000054_movie_t-3.jpg", "titan_clip_880_000054_movie_t-2.jpg", "titan_clip_880_000054_movie_t-1.jpg", "titan_clip_880_000054_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to merging traffic", "environment_perception": "The scene shows a straight urban two-way street bordered by tall buildings, with the ego vehicle moving in the left lane through slow, light-to-moderate traffic. A white van on the left curb area pulls out and moves into the ego lane ahead, partially entering the driving path. On the right side, a black sedan is slightly out from the curb but remains paused and does not advance. A small box truck continues farther ahead in the same lane, while parked cars along both sides make the roadway feel tight.", "hazard_reasoning": "The main risk is the white van merging from the left into the ego lane. Because it is moving into the lane directly ahead, it could conflict with the ego vehicle’s path without much warning. The appropriate response is to yield and be ready to slow down to avoid a collision during this merge."}
{"id": "train_09685", "split": "train", "clip_key": "2020-0226-101332_015884_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "015884"}, "frames": ["2020-0226-101332_015884_movie_t-3.jpg", "2020-0226-101332_015884_movie_t-2.jpg", "2020-0226-101332_015884_movie_t-1.jpg", "2020-0226-101332_015884_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cones ahead", "environment_perception": "This is a narrow urban two-way street with railings along both sides and a damp road surface. A row of orange traffic cones runs along the right edge of the ego lane beside a red-painted section, making the roadway feel tighter. A yellow sedan ahead in the same lane is moving slowly and then stops near the intersection, limiting forward progress. A white van is also waiting farther ahead near the signal, creating a short queue. There is no oncoming vehicle in the adjacent lane. A blue keep-left sign is visible, and a no entry sign is posted for the side street on the right.", "hazard_reasoning": "The main concern is the line of orange cones along the right side of the ego lane. They suggest lane narrowing or roadworks ahead, so the driver may need to slow down and keep the vehicle positioned carefully."}
{"id": "train_09686", "split": "train", "clip_key": "2020-0205-103411_114696_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "114696"}, "frames": ["2020-0205-103411_114696_movie_t-3.jpg", "2020-0205-103411_114696_movie_t-2.jpg", "2020-0205-103411_114696_movie_t-1.jpg", "2020-0205-103411_114696_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dry urban roadway with light same-direction traffic shows two through lanes plus a right-turn lane, with a broad painted median on the right and no oncoming vehicles present. Ahead on the left, a black sedan drifts right into the ego lane while reducing speed, as the lane markings and overhead sign indicate the left lane is for turning left. Farther ahead, a white van keeps moving straight in the ego lane at a steady pace, briefly defining the gap after the merge. A few other vehicles are visible farther away, and the rightmost lane is marked for right turns.", "hazard_reasoning": "The main hazard is the black sedan merging from the left lane into the ego vehicle’s lane. Since the signage directs that left-lane traffic must turn left, this lane change is unexpected and creates a potential collision risk. The driver should slow down to keep a safe following distance."}
{"id": "train_09687", "split": "train", "clip_key": "titan_clip_280_001104_movie", "source": {"subset": "titan", "scenario": "clip_280", "frame": "001104"}, "frames": ["titan_clip_280_001104_movie_t-3.jpg", "titan_clip_280_001104_movie_t-2.jpg", "titan_clip_280_001104_movie_t-1.jpg", "titan_clip_280_001104_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is a tight urban street with a single lane in each direction and no median, bordered by buildings. The road ahead is clear of moving traffic, but the right side has a pedestrian and a worker near the curb, along with a cart and stacked boxes that encroach on the roadway. On the left, a line of orange cones marks off a walkway and reduces the drivable space, creating a constrained passage with roadside clutter on both sides.", "hazard_reasoning": "The cones on the left indicate an active work or pedestrian-management area and make the lane narrower than usual. With workers and materials close to the curb on the right, the driver should treat this as a construction-related hazard and proceed cautiously by slowing down."}
{"id": "train_09688", "split": "train", "clip_key": "2020-0226-140503_028253_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "028253"}, "frames": ["2020-0226-140503_028253_movie_t-3.jpg", "2020-0226-140503_028253_movie_t-2.jpg", "2020-0226-140503_028253_movie_t-1.jpg", "2020-0226-140503_028253_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the stopped blue van.", "environment_perception": "A wet urban two-way roadway with one lane in each direction extends straight ahead, with no solid center divider and light to moderate traffic. A blue van is stopped on the left side a little ahead, positioned as if it may enter the ego lane and merge into the driving path. Farther up the left edge near the curb, a white mini-truck is parked, leaving less room along that side. Several cars and a small truck are approaching in the opposite lane at a steady pace. A 40 speed marking is visible on the road.", "hazard_reasoning": "The main concern is the blue van stopped along the left side, since it appears ready to move into the ego lane. If it pulls out without warning, it could enter the vehicle's path, so the driver should watch it closely and be prepared to slow or adjust."}
{"id": "train_09689", "split": "train", "clip_key": "2020-0226-140503_011078_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "011078"}, "frames": ["2020-0226-140503_011078_movie_t-3.jpg", "2020-0226-140503_011078_movie_t-2.jpg", "2020-0226-140503_011078_movie_t-1.jpg", "2020-0226-140503_011078_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the merging truck", "environment_perception": "The scene shows an urban divided roadway with two lanes moving in the same direction, lined by mid-rise buildings. The pavement is dry and traffic appears moderate but steady. A green box truck ahead in the ego lane continues straight, while a silver minivan in the right adjacent lane also moves forward at a similar pace. From the left side, a silver and blue truck moves into the ego lane ahead of the vehicle, merging into the driving path. On the far side of the shrub median, oncoming traffic travels in the opposite direction and stays separated.", "hazard_reasoning": "The main hazard is the silver and blue truck merging from the left lane into the ego lane directly ahead. This creates a conflict in the vehicle’s path, so the ego vehicle should yield to avoid a collision."}
{"id": "train_09690", "split": "train", "clip_key": "2020-0226-101332_015884_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "015884"}, "frames": ["2020-0226-101332_015884_movie_t-3.jpg", "2020-0226-101332_015884_movie_t-2.jpg", "2020-0226-101332_015884_movie_t-1.jpg", "2020-0226-101332_015884_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cones ahead", "environment_perception": "This is a damp urban residential street with a narrow two-way road and railings along both sides. A row of orange traffic cones runs along the right edge of the ego lane beside a red-painted section, making the lane feel tighter. A yellow sedan in front moves slowly and then stops near the intersection, while a white van farther ahead is also waiting near the signal, creating a short queue. The opposite lane is clear of oncoming traffic. A blue keep-left sign is visible, and a no-entry sign stands by the side street on the right.", "hazard_reasoning": "The main concern is the line of orange cones along the right side of the lane. They suggest lane narrowing or road work ahead, so the driver should prepare to slow down and adjust position or path accordingly."}
{"id": "train_09691", "split": "train", "clip_key": "2020-0210-101957_073169_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "073169"}, "frames": ["2020-0210-101957_073169_movie_t-3.jpg", "2020-0210-101957_073169_movie_t-2.jpg", "2020-0210-101957_073169_movie_t-1.jpg", "2020-0210-101957_073169_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the oncoming black van.", "environment_perception": "This is a suburban two-way road with one narrow lane in each direction, smooth pavement, and a gentle right-hand bend. Traffic is sparse. A black van ahead in the opposite lane is moving toward the ego vehicle and drifts a little into the ego lane. On the left, a white minivan is stopped at a driveway edge and could potentially enter the lane. A metal fence runs close along the right side.", "hazard_reasoning": "The main concern is the black van approaching in the ego lane area. Since it is partially encroaching into the ego lane while coming toward the car, there is a possible collision risk, so it should be treated with caution."}
{"id": "train_09692", "split": "train", "clip_key": "2020-0214-102601_025386_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "025386"}, "frames": ["2020-0214-102601_025386_movie_t-3.jpg", "2020-0214-102601_025386_movie_t-2.jpg", "2020-0214-102601_025386_movie_t-1.jpg", "2020-0214-102601_025386_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to merging sedan", "environment_perception": "The scene shows a busy urban road with smooth pavement and slow, compact traffic spread across three same-direction lanes, plus a red curb lane on the left and a low median dividing opposing traffic. A green sedan ahead on the left is edging right into the ego lane as the car in front of it slows, which also affects the ego vehicle’s pace. A black SUV slightly ahead in the right lane continues straight at nearly the same speed, reducing space on that side. Farther ahead, a white coach bus in the center lanes is slowing with the traffic queue, adding to the congestion. Pedestrians are visible walking behind guardrails along the left sidewalk.", "hazard_reasoning": "The main hazard is the green sedan merging from the left lane into the ego lane because of the slowdown ahead. This requires caution and yielding, since the sedan could move into the lane unexpectedly and create a collision risk if space is not given."}
{"id": "train_09693", "split": "train", "clip_key": "2020-0207-101955_085980_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "085980"}, "frames": ["2020-0207-101955_085980_movie_t-3.jpg", "2020-0207-101955_085980_movie_t-2.jpg", "2020-0207-101955_085980_movie_t-1.jpg", "2020-0207-101955_085980_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of truck changing lanes", "environment_perception": "This is an urban expressway with two lanes moving in the same direction, bordered by sound walls and passing under an overpass. The roadway appears smooth, and surrounding traffic is light and steady. A blue truck ahead in the ego lane shifts left and finishes merging into the adjacent left lane directly in front of the ego vehicle, momentarily setting the ego car's pace. In that left lane, a larger construction flatbed continues straight at a steady speed and appears to be the space the blue truck is moving into. Farther ahead near the center of view, another truck also travels straight in the left lane. Flexible posts mark a gore area between the lanes and the shoulder, and no notable signs or signals are visible.", "hazard_reasoning": "The main hazard is the blue truck merging from the ego lane into the left lane just ahead of the ego vehicle. Because it crosses into the adjacent lane in front of us, it can reduce available space and interfere with our forward path, so caution and speed adjustment are needed."}
{"id": "train_09694", "split": "train", "clip_key": "titan_clip_1298_000312_movie", "source": {"subset": "titan", "scenario": "clip_1298", "frame": "000312"}, "frames": ["titan_clip_1298_000312_movie_t-3.jpg", "titan_clip_1298_000312_movie_t-2.jpg", "titan_clip_1298_000312_movie_t-1.jpg", "titan_clip_1298_000312_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is an urban two-way street without a median, with worn pavement and trees and storefronts along both sides. The left side of the lane ahead is partly blocked by roadside construction, where several work trucks and a crane are parked behind a row of cones, narrowing the usable path and shifting traffic to the right. A uniformed worker stands beside a right-turn sign and a cone at the work area, facing oncoming traffic. A small white car is visible farther ahead, continuing straight through the narrowed section and moving away.", "hazard_reasoning": "The cone-lined area on the left indicates active road work and a partial obstruction in the driving path. Since the roadway is constricted by the construction zone, the main risk is needing to proceed carefully and reduce speed to pass safely."}
{"id": "train_09695", "split": "train", "clip_key": "2020-0131-135401_028261_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "028261"}, "frames": ["2020-0131-135401_028261_movie_t-3.jpg", "2020-0131-135401_028261_movie_t-2.jpg", "2020-0131-135401_028261_movie_t-1.jpg", "2020-0131-135401_028261_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the merging SUV.", "environment_perception": "This is a straight urban divided road bordered by apartment buildings, with two lanes traveling in our direction and two lanes for oncoming traffic separated by a chevron-marked median. The surface looks clear and traffic is flowing steadily. Ahead of the ego vehicle, a white SUV moves from our lane into the left curbside lane, no longer occupying our direct path. In that same left lane, a dark car is farther ahead and moving a bit slower, which affects the SUV’s merge. On the opposite side of the median, a white box truck is stopped at the curb while a smaller truck continues past it, and parked vehicles along the curbs slightly narrow the available space near the left lane.", "hazard_reasoning": "The key hazard is the white SUV shifting left out of the ego lane and into the adjacent lane. This lane-change merge could require us to slow down or adjust course to keep a safe gap."}
{"id": "train_09696", "split": "train", "clip_key": "2020-0210-101957_073169_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "073169"}, "frames": ["2020-0210-101957_073169_movie_t-3.jpg", "2020-0210-101957_073169_movie_t-2.jpg", "2020-0210-101957_073169_movie_t-1.jpg", "2020-0210-101957_073169_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the oncoming black van.", "environment_perception": "This is a suburban two-way road with one narrow lane in each direction, smooth asphalt, and a gentle right-hand curve. Traffic is sparse. A black van ahead in the opposite lane is coming toward the ego vehicle and drifts slightly over toward the ego lane. On the left, a white minivan is parked at the edge of a driveway and could possibly merge out. A metal fence runs close along the right side.", "hazard_reasoning": "The black van is approaching in the ego vehicle’s lane area and is slightly encroaching into that space. Because it is oncoming and close to the lane boundary, it creates a possible collision risk, so caution is needed."}
{"id": "train_09697", "split": "train", "clip_key": "2020-0220-102630_022111_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "022111"}, "frames": ["2020-0220-102630_022111_movie_t-3.jpg", "2020-0220-102630_022111_movie_t-2.jpg", "2020-0220-102630_022111_movie_t-1.jpg", "2020-0220-102630_022111_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "This is a divided urban roadway with two lanes traveling in the same direction, lined by midrise buildings, while a metal barrier separates opposing traffic on the right. The road surface is dry and clear, but traffic is dense and moving slowly. Ahead in the ego lane, a large white box truck is creeping forward and intermittently stopping, effectively leading the queue. Just ahead and slightly right, a white sedan moves over from the ego lane into the right lane and then stops with the line of traffic, briefly crossing the lane boundary and reducing the available space in front of the ego vehicle. Farther ahead in the right lane, a small canvas-covered truck is also stationary in the jam.", "hazard_reasoning": "The main hazard is the white sedan merging into the right lane and stopping in congested traffic. This creates a narrowing of the forward path and means the driver should slow or stop to keep a safe gap and avoid a possible rear-end collision."}
{"id": "train_09698", "split": "train", "clip_key": "2020-0218-103119_002867_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002867"}, "frames": ["2020-0218-103119_002867_movie_t-3.jpg", "2020-0218-103119_002867_movie_t-2.jpg", "2020-0218-103119_002867_movie_t-1.jpg", "2020-0218-103119_002867_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the van", "environment_perception": "A straight urban multi-lane arterial stretches between tall buildings, with a painted chevron median and low shrubs separating directions of travel. The road surface is dry and even, and surrounding traffic is moving steadily. Ahead in the right lane, a silver van is coming from the opposite direction while staying within its lane beyond the median. In the center lane farther ahead, a white box van continues at a constant speed and appears to pace the flow. Near the left curb, a dark station wagon is stopped and does not affect the moving lanes. Additional oncoming traffic can be seen across the median.", "hazard_reasoning": "The silver van is approaching the ego vehicle from the opposite direction. It may enter the ego vehicle's path or pass alongside, so the driver should yield to avoid a collision."}
{"id": "train_09699", "split": "train", "clip_key": "2020-0218-103119_002867_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002867"}, "frames": ["2020-0218-103119_002867_movie_t-3.jpg", "2020-0218-103119_002867_movie_t-2.jpg", "2020-0218-103119_002867_movie_t-1.jpg", "2020-0218-103119_002867_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the van", "environment_perception": "A straight urban arterial between tall buildings has multiple lanes and a painted chevron median with low shrubs. The road surface looks dry, and traffic is moving steadily. Ahead in the right lane, a silver van is traveling toward the ego vehicle from the opposite direction, but it remains separated by the median. In the center lane farther ahead, a white box van continues at a constant pace. A dark station wagon sits parked or stopped along the left curb, outside the active lanes. Additional oncoming traffic can be seen beyond the median.", "hazard_reasoning": "The main concern is the silver van approaching head-on in the adjacent opposite-direction lane. While it is currently separated by the median, it remains the most relevant moving vehicle and could continue alongside or create a conflict if its path changes. The safest response is to yield and monitor it to avoid a possible collision."}
{"id": "train_09700", "split": "train", "clip_key": "titan_clip_1298_000312_movie", "source": {"subset": "titan", "scenario": "clip_1298", "frame": "000312"}, "frames": ["titan_clip_1298_000312_movie_t-3.jpg", "titan_clip_1298_000312_movie_t-2.jpg", "titan_clip_1298_000312_movie_t-1.jpg", "titan_clip_1298_000312_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A worn, two-way urban road without a median stretches past trees and storefronts, and the left side ahead is constricted by roadside work. On the left, several construction trucks and a crane sit behind a row of traffic cones, taking up part of the ego lane and forcing traffic to keep right. A uniformed worker stands beside a right-pointing sign and a cone, marking the work area and observing oncoming vehicles. A small white car is visible farther ahead, continuing away through the narrowed section near the lane center.", "hazard_reasoning": "The cone and work-zone setup on the left indicate roadside construction and a partial obstruction of the driving path. Because the lane is narrowed and traffic must pass carefully, the driver should reduce speed and proceed cautiously."}
{"id": "train_09701", "split": "train", "clip_key": "2020-0218-103119_019519_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "019519"}, "frames": ["2020-0218-103119_019519_movie_t-3.jpg", "2020-0218-103119_019519_movie_t-2.jpg", "2020-0218-103119_019519_movie_t-1.jpg", "2020-0218-103119_019519_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of lane-changing hatchback ahead", "environment_perception": "This is an urban multi-lane road with dry pavement and moderate traffic, bordered by midrise buildings on one side and a treelined embankment on the other. A white hatchback ahead in the ego lane moves left and merges into the adjacent left lane in front of the ego vehicle, momentarily affecting the ego car’s pace. A large box truck is traveling slightly ahead in the lane to the right, continuing straight. Oncoming traffic stays beyond the central double lines and is separated from the ego path. Blue overhead direction signs are visible, and several maintenance trucks are parked along the far-left shoulder behind a guardrail.", "hazard_reasoning": "The main hazard is the white hatchback changing lanes in front of the ego car. As it merges from the ego lane into the left lane, it can reduce available space and force a speed or path adjustment."}
{"id": "train_09702", "split": "train", "clip_key": "2020-0218-103119_002867_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002867"}, "frames": ["2020-0218-103119_002867_movie_t-3.jpg", "2020-0218-103119_002867_movie_t-2.jpg", "2020-0218-103119_002867_movie_t-1.jpg", "2020-0218-103119_002867_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the van", "environment_perception": "A straight urban arterial bordered by tall buildings has multiple lanes and a painted chevron median with low shrubs. The road surface is dry, and traffic is flowing at a steady, moderate speed. Ahead in the right lane, a silver van is coming toward the ego vehicle but remains separated by the median. In the center lane farther ahead, a white box van continues steadily and appears to be pacing the traffic behind it. A dark station wagon sits parked near the left curb, out of the travel lanes. Oncoming vehicles can be seen beyond the median.", "hazard_reasoning": "The main concern is the silver van traveling toward the ego car in the opposite lane. Since it is approaching head-on on the other side of the median, it may continue alongside or drift into the ego vehicle's path, so the safest response is to yield and avoid a possible collision."}
{"id": "train_09703", "split": "train", "clip_key": "2020-0227-104226_026047_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "026047"}, "frames": ["2020-0227-104226_026047_movie_t-3.jpg", "2020-0227-104226_026047_movie_t-2.jpg", "2020-0227-104226_026047_movie_t-1.jpg", "2020-0227-104226_026047_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of cones narrowing the roadway", "environment_perception": "This is a straight urban arterial beneath an elevated roadway, with three lanes in the same direction and clear pavement. The leftmost lane is blocked off by a work zone lined with orange traffic cones. A small black car ahead in the center lane is continuing forward at a steady pace, while a row of work trucks remains parked inside the coned-off area on the left, outside the travel lane. A blue van is stopped on the right shoulder under the viaduct, also clear of the ego lane. Overhead blue guide signs are visible, and there are no notable traffic lights or speed signs.", "hazard_reasoning": "The main concern is the cone line along the left side, which indicates road construction. By reducing usable roadway width, it can require the driver to adjust position more carefully, creating a moderate hazard."}
{"id": "train_09704", "split": "train", "clip_key": "2020-0205-152530_040034_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "040034"}, "frames": ["2020-0205-152530_040034_movie_t-3.jpg", "2020-0205-152530_040034_movie_t-2.jpg", "2020-0205-152530_040034_movie_t-1.jpg", "2020-0205-152530_040034_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of the merging vehicle", "environment_perception": "The scene shows a broad urban roadway with multiple lanes in each direction, marked only by painted lines, and the pavement appears dry and clear. Slightly ahead on the right, a black hatchback is moving out of the ego lane toward the right lane. A light van remains straight ahead in the ego lane and continues at a steady pace, which limits the ego vehicle’s forward progress. On the right side, a line of cars travels alongside and leaves little room for an immediate merge. Farther to the right, oncoming traffic is visible on the opposite side of the carriageway. Parked taxis are present along the left curb but are not part of the active lane.", "hazard_reasoning": "The key hazard is the black hatchback shifting from the ego lane into the right lane. Because it is changing lanes near the ego vehicle, it could enter the path unexpectedly, so it should be monitored carefully."}
{"id": "train_09705", "split": "train", "clip_key": "2020-0210-142719_003950_movie", "source": {"subset": "drama", "scenario": "2020-0210-142719", "frame": "003950"}, "frames": ["2020-0210-142719_003950_movie_t-3.jpg", "2020-0210-142719_003950_movie_t-2.jpg", "2020-0210-142719_003950_movie_t-1.jpg", "2020-0210-142719_003950_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is an urban commercial road with two lanes moving in the same direction and no median, with smooth pavement and light-to-moderate traffic. A black minivan ahead in the ego lane is stopped, apparently yielding to pedestrians and preparing to merge left. Two pedestrians are crossing from right to left in front of it at a walking pace, temporarily occupying the area the minivan would move into. A white box truck continues slowly farther ahead in the right lane, contributing to the slow queue. The sidewalks near the bus stop on the right are active, but there are no roadway obstructions.", "hazard_reasoning": "The black minivan in front is the key hazard because it is paused for pedestrians and is likely to shift into the left lane from the ego lane. That planned lane change could happen suddenly and create a side-swipe or cut-in risk, so the ego driver should stay alert, slow down, and keep a safe gap."}
{"id": "train_09706", "split": "train", "clip_key": "2020-0227-104226_026047_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "026047"}, "frames": ["2020-0227-104226_026047_movie_t-3.jpg", "2020-0227-104226_026047_movie_t-2.jpg", "2020-0227-104226_026047_movie_t-1.jpg", "2020-0227-104226_026047_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of cones narrowing the roadway", "environment_perception": "The scene shows a urban multi-lane roadway beneath an elevated expressway, with three lanes moving in the same direction over smooth pavement and only light, steady traffic. The leftmost lane is shut down by a work area marked with a continuous row of orange cones. Ahead, a small black car in the center lane travels straight at a moderate pace and effectively sets the flow for the ego vehicle. Several work trucks are parked on the left inside the coned-off zone, away from the open lane, while a blue van is stopped on the right shoulder under the viaduct and does not intrude into the driving path. Blue overhead direction signs are visible, and no major signals or speed limit signs stand out.", "hazard_reasoning": "The main risk comes from the line of orange cones along the left edge. They reduce the usable roadway width and may require a driver to adjust steering more carefully, so this is a roadwork-related hazard to watch."}
{"id": "train_09707", "split": "train", "clip_key": "2020-0206-142535_014738_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "014738"}, "frames": ["2020-0206-142535_014738_movie_t-3.jpg", "2020-0206-142535_014738_movie_t-2.jpg", "2020-0206-142535_014738_movie_t-1.jpg", "2020-0206-142535_014738_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "be aware of the black sedan", "environment_perception": "A broad signalized urban intersection lies ahead on a multi-lane road with moderate two-way traffic and clear pavement. The ego vehicle is traveling in the left-side lanes typical of Japan, while opposing traffic uses the right-side lanes. A black sedan is approaching from the right side in the oncoming lane and moving through the intersection, with a small white van following behind it in the same lane. In the distance, several cars and a small truck continue straight away from the camera in the ego direction. A pedestrian is standing on the left sidewalk near the corner and remains off the roadway.", "hazard_reasoning": "The main concern is the black sedan coming toward the ego vehicle from the right side. As it enters and passes through the junction, it could cross or intrude into the ego vehicle’s path, so it should be treated as the primary hazard and monitored closely."}
{"id": "train_09708", "split": "train", "clip_key": "2020-0218-103119_057282_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "057282"}, "frames": ["2020-0218-103119_057282_movie_t-3.jpg", "2020-0218-103119_057282_movie_t-2.jpg", "2020-0218-103119_057282_movie_t-1.jpg", "2020-0218-103119_057282_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the truck's lane change.", "environment_perception": "The scene shows an urban two-lane road beneath an elevated structure, with a guardrail on the right and clear pavement ahead, while traffic flows in the same direction. A white box truck in front of the ego vehicle shifts from the ego lane toward the right lane, using a visible gap in traffic and opening space ahead. A black SUV farther ahead in the right lane continues straight, and a white minibus along the far-right edge of that lane moves slowly forward without entering the ego lane.", "hazard_reasoning": "The main risk is the white truck’s lane change from the ego lane into the right lane. Since it is moving across where traffic is open, it could merge unpredictably and force the ego vehicle to slow down or adjust position to stay safe."}
{"id": "train_09709", "split": "train", "clip_key": "2020-0203-114632_067509_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "067509"}, "frames": ["2020-0203-114632_067509_movie_t-3.jpg", "2020-0203-114632_067509_movie_t-2.jpg", "2020-0203-114632_067509_movie_t-1.jpg", "2020-0203-114632_067509_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of gray van merging left", "environment_perception": "A dry, well-maintained urban roadway with two through lanes and a narrow lane on the left is visible, with light traffic moving ahead. A gray van is directly in front of the ego vehicle and shifts from the ego lane into the left lane before proceeding straight. A small flatbed truck continues steadily farther ahead in the right lane. On the left side, a bicyclist is traveling behind a railing on the sidewalk, staying clear of the roadway. Lane markings and arrows ahead show through and right-turn directions.", "hazard_reasoning": "The main concern is the gray van moving left across the ego vehicle's path. This lane change happens close ahead and could require sudden speed or steering adjustments, creating a merge-related collision risk, so it should be treated as the primary hazard."}
{"id": "train_09710", "split": "train", "clip_key": "2020-0217-144444_013397_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "013397"}, "frames": ["2020-0217-144444_013397_movie_t-3.jpg", "2020-0217-144444_013397_movie_t-2.jpg", "2020-0217-144444_013397_movie_t-1.jpg", "2020-0217-144444_013397_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to merging hatchback", "environment_perception": "An urban roadway with two marked lanes stretches between tall buildings, and the dry surface carries light traffic that momentarily bunches up near a curbside work truck. Ahead of the ego vehicle, a black hatchback shifts from the left/ego lane into the right lane, passing in front because a small flatbed truck on the left side is slowing by the curb. Farther ahead on the left, that truck is still moving very slowly or is stopped, which constrains the lane. On the right, a white van is waiting at a driveway to merge once the hatchback has gone by. Pedestrians remain on the sidewalks.", "hazard_reasoning": "The main risk is the black hatchback merging across in front of the ego car into the right lane. Since it is changing lanes to avoid the slowing truck, the ego driver should yield and be prepared for a possible conflict."}
{"id": "train_09711", "split": "train", "clip_key": "2020-0131-135401_029159_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "029159"}, "frames": ["2020-0131-135401_029159_movie_t-3.jpg", "2020-0131-135401_029159_movie_t-2.jpg", "2020-0131-135401_029159_movie_t-1.jpg", "2020-0131-135401_029159_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "The scene shows an urban junction with two-way traffic and no center median, with smooth pavement and moderate flow near the crosswalk. Ahead on the zebra crossing, a woman is pushing a stroller from left to right across the ego lane, taking up part of the crossing. On the right side, a white sedan is turning through the intersection into the ego lane and looks like it will merge in front of the ego vehicle. In the distance beyond the junction, oncoming cars continue leftward across the crossing without affecting the ego path.", "hazard_reasoning": "The main hazard is the white sedan entering the ego lane from the right while turning in the intersection. This creates a direct conflict with the ego vehicle, so the safest response is to stop to prevent a collision with the merging car."}
{"id": "train_09712", "split": "train", "clip_key": "2020-0205-152530_016949_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "016949"}, "frames": ["2020-0205-152530_016949_movie_t-3.jpg", "2020-0205-152530_016949_movie_t-2.jpg", "2020-0205-152530_016949_movie_t-1.jpg", "2020-0205-152530_016949_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cone.", "environment_perception": "An urban multilane road bends left into a signalized intersection on smooth pavement with light traffic. The light ahead is red. At the far-right corner by the crosswalk, a small group of pedestrians is waiting to cross and could enter the ego lane when allowed. A cyclist is traveling slowly along the right sidewalk near the junction, staying parallel to the ego lane but outside it. A few vehicles are stopped along the left curb beyond the crosswalk and do not interfere with the ego path. An orange-and-white traffic cone sits on the right side of the ego lane, and flexible posts line the painted divider near the intersection.", "hazard_reasoning": "The orange-and-white cone on the right side of the ego lane is the main hazard. It creates a possible lane obstruction, so the driver should steer with care to avoid hitting it and keep the vehicle positioned safely within the lane."}
{"id": "train_09713", "split": "train", "clip_key": "2020-0206-142535_014738_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "014738"}, "frames": ["2020-0206-142535_014738_movie_t-3.jpg", "2020-0206-142535_014738_movie_t-2.jpg", "2020-0206-142535_014738_movie_t-1.jpg", "2020-0206-142535_014738_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "be aware of the black sedan", "environment_perception": "The scene shows a broad signalized urban intersection on a smooth multi-lane road with moderate two-way traffic. The ego vehicle is traveling in the left-side lanes, consistent with Japanese traffic, while opposing traffic uses the right-side lanes. A black sedan is approaching from the right side of the intersection in the oncoming lane and moving through the junction, where it could pass across the ego vehicle’s path. Directly behind it, a small white van is also coming toward the camera in the same oncoming lane. In the distance beyond the intersection, several cars and a small truck continue straight away from the camera in the ego direction. A pedestrian is visible on the left sidewalk near the corner and remains off the roadway.", "hazard_reasoning": "The main concern is the black sedan in the oncoming lane on the right side of the intersection. Because it is moving toward the ego vehicle and entering the junction, it could cross or cut into the ego path, so it should be treated as the critical hazard and watched closely."}
{"id": "train_09714", "split": "train", "clip_key": "2020-0206-142535_014738_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "014738"}, "frames": ["2020-0206-142535_014738_movie_t-3.jpg", "2020-0206-142535_014738_movie_t-2.jpg", "2020-0206-142535_014738_movie_t-1.jpg", "2020-0206-142535_014738_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "be aware of the black sedan", "environment_perception": "A wide signalized urban intersection lies ahead on a multi-lane arterial with smooth pavement and moderate two-way flow. The ego vehicle is traveling in the left-side lanes, consistent with Japan, while opposing traffic uses the right-side lanes. On the right side of the intersection, a black sedan is coming toward the ego vehicle in the oncoming lane and moving through the junction. A small white van follows closely behind it in the same oncoming lane. In the distance beyond the intersection, several cars and a small truck continue straight away from the camera in the ego direction at a steady speed. A pedestrian is standing on the left sidewalk near the corner and remains out of the travel lane.", "hazard_reasoning": "The main concern is the black sedan approaching from the right side of the intersection. Because it is coming toward the ego vehicle and passing through the junction, it could potentially cross or interfere with the ego vehicle's path there. The situation calls for caution, but the risk is limited compared with an immediate conflict."}
{"id": "train_09715", "split": "train", "clip_key": "2020-0205-103411_121000_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "121000"}, "frames": ["2020-0205-103411_121000_movie_t-3.jpg", "2020-0205-103411_121000_movie_t-2.jpg", "2020-0205-103411_121000_movie_t-1.jpg", "2020-0205-103411_121000_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of lane-changing hatchback ahead", "environment_perception": "The scene is an urban multilane arterial with a separated curbside bus bay on the right, dry lane markings, and moderate slow-moving traffic. Ahead of the ego vehicle, a black compact hatchback from the right lane shifts left to merge into the left lane, then continues at a slow pace. A city bus is stopped in the right-side bay behind a low curb and stays still. Farther up in the adjacent right lane, a queue of cars is creeping forward, leaving limited room for other merges.", "hazard_reasoning": "The main concern is the black compact hatchback moving across in front of the ego car into the left lane. This lane change can cut down the available space and may require the ego vehicle to slow down or adjust position to stay safe."}
{"id": "train_09716", "split": "train", "clip_key": "2020-0214-102601_078420_movie", "source": {"subset": "drama", "scenario": "2020-0214-102601", "frame": "078420"}, "frames": ["2020-0214-102601_078420_movie_t-3.jpg", "2020-0214-102601_078420_movie_t-2.jpg", "2020-0214-102601_078420_movie_t-1.jpg", "2020-0214-102601_078420_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene is a quiet suburban two-way road with one lane in each direction and smooth pavement, passing houses and low walls. Ahead in the ego lane, a gray mid-size SUV starts moving right, edging toward the opposing lane to get around a parked vehicle. A small delivery truck is also stopped partly in the ego lane with its rear open, which is obstructing the roadway and contributing to the slowdown. No oncoming traffic is visible in the opposite lane.", "hazard_reasoning": "The gray mid-SUV is in the process of merging right from the ego lane because of the parked vehicle. Since it is shifting into the oncoming side to pass, the safest response is to reduce speed and give it room to complete the maneuver."}
{"id": "train_09717", "split": "train", "clip_key": "2020-0131-103016_071183_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "071183"}, "frames": ["2020-0131-103016_071183_movie_t-3.jpg", "2020-0131-103016_071183_movie_t-2.jpg", "2020-0131-103016_071183_movie_t-1.jpg", "2020-0131-103016_071183_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down for construction zone", "environment_perception": "A divided urban roadway with three lanes in the same direction has clear pavement and moderate, steady traffic. The opposite carriageway is out of view. A white box truck in front of the ego vehicle holds a steady pace in the lane ahead. In the right lane, a small covered truck is moving a bit faster and passing the ego vehicle. Farther forward, vehicles in the center and right lanes are slowing near the next intersection, and on the left curb a service vehicle is stopped. An orange traffic cone at the left side of the intersection marks construction activity and reduces the usable space.", "hazard_reasoning": "The visible orange cone indicates an active construction area on the left side of the intersection. This creates a potential roadway hazard, so the driver should reduce speed and proceed carefully through the zone."}
{"id": "train_09718", "split": "train", "clip_key": "titan_clip_125_000504_movie", "source": {"subset": "titan", "scenario": "clip_125", "frame": "000504"}, "frames": ["titan_clip_125_000504_movie_t-3.jpg", "titan_clip_125_000504_movie_t-2.jpg", "titan_clip_125_000504_movie_t-1.jpg", "titan_clip_125_000504_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the turning van", "environment_perception": "The ego vehicle is moving through a dense urban area on a smooth two-lane road without a median. Ahead is a small unsignalized intersection with a zebra crossing. A white van is stopped on the right side, positioned to turn into the ego lane. Near the crosswalk on the right sidewalk, a few pedestrians, including one pushing a small cart, are walking close to the curb and could approach the crossing. On the left sidewalk, a pedestrian with an umbrella is moving toward the intersection but stays off the roadway.", "hazard_reasoning": "The main concern is the white van waiting on the right side of the intersection to enter the ego lane. Since it is poised to turn, it could merge into the lane suddenly and create a lane intrusion risk. The driver should monitor the van closely and be ready for its movement."}
{"id": "train_09719", "split": "train", "clip_key": "2020-0203-114632_003386_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "003386"}, "frames": ["2020-0203-114632_003386_movie_t-3.jpg", "2020-0203-114632_003386_movie_t-2.jpg", "2020-0203-114632_003386_movie_t-1.jpg", "2020-0203-114632_003386_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of incoming white sedan", "environment_perception": "The scene shows an urban two-way roadway with one lane in each direction and a narrow bike lane along the curb, bordered by mid-rise buildings. The road surface is dry and clear, with no median, and traffic appears light. A white box truck is moving toward the ego vehicle in the opposing right lane, continuing straight ahead. Behind it, a white sedan is also approaching in that same oncoming lane near the curb, getting closer while staying within its lane. On the left sidewalk, a person holding a bicycle is waiting by the railing near a crosswalk and is not stepping into the road.", "hazard_reasoning": "The main concern is the white sedan advancing in the oncoming lane toward the ego vehicle. Since it is closing distance in incoming traffic, it represents a possible collision risk if it is not accounted for promptly. The sedan remains in its lane, so the threat is limited, but the driver should still watch for it."}
{"id": "train_09720", "split": "train", "clip_key": "2020-0203-114632_003386_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "003386"}, "frames": ["2020-0203-114632_003386_movie_t-3.jpg", "2020-0203-114632_003386_movie_t-2.jpg", "2020-0203-114632_003386_movie_t-1.jpg", "2020-0203-114632_003386_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of incoming white sedan", "environment_perception": "This is an urban two-way road with one lane in each direction and a narrow bike lane along the curb, bordered by mid-rise buildings. The pavement appears dry and clear, with no median separating traffic, and the overall flow is light. A white box truck is traveling straight toward the ego vehicle in the opposing right lane, and a white sedan is also approaching in that same oncoming lane near the curb while staying within its lane. On the left sidewalk, a person holding a bicycle stands by the railing near a crosswalk and does not enter the road.", "hazard_reasoning": "The main concern is the white sedan coming toward the ego vehicle in the oncoming right lane. Since it is closing distance in opposing traffic, it presents a possible collision risk if the driver fails to notice it in time, so it should be treated as the relevant hazard."}
{"id": "train_09721", "split": "train", "clip_key": "2020-0205-152530_016949_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "016949"}, "frames": ["2020-0205-152530_016949_movie_t-3.jpg", "2020-0205-152530_016949_movie_t-2.jpg", "2020-0205-152530_016949_movie_t-1.jpg", "2020-0205-152530_016949_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around the cone.", "environment_perception": "A light-traffic urban multilane road bends left toward a signalized intersection on dry pavement, and the signal ahead is red. At the far-right corner by the crosswalk, a small group of pedestrians is waiting to cross. A cyclist is traveling slowly on the right sidewalk near the intersection, staying outside the ego lane. Several vehicles are parked along the left curb beyond the crosswalk, so they do not block the driving path. An orange-and-white traffic cone sits on the right edge of the ego lane, and flexible posts continue along the painted divider near the junction.", "hazard_reasoning": "The main concern is the orange-and-white cone positioned on the right side of the lane. It creates a possible obstruction in the ego vehicle’s path, so the driver needs to pass it with care and keep a safe lane position to avoid contact."}
{"id": "train_09722", "split": "train", "clip_key": "2020-0131-103016_071183_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "071183"}, "frames": ["2020-0131-103016_071183_movie_t-3.jpg", "2020-0131-103016_071183_movie_t-2.jpg", "2020-0131-103016_071183_movie_t-1.jpg", "2020-0131-103016_071183_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Slow down for construction zone", "environment_perception": "This is an urban multi-lane road with three lanes in the same direction and smooth pavement, with moderate traffic flowing steadily; the opposite carriageway is not visible, so it appears to be a divided road. A white box truck ahead in the ego lane is moving at a steady pace and effectively controlling the speed of traffic. In the right lane, a small covered truck is traveling a bit faster and passing the ego vehicle. Farther ahead, several cars in the center and right lanes are slowing near the upcoming junction. On the left curb, a service vehicle is stopped, and an orange traffic cone near the left side of the intersection marks construction activity that tightens the available space.", "hazard_reasoning": "The visible orange traffic cone on the left side of the intersection signals an active construction zone. This creates a need for caution and reduced speed so the driver can pass safely and avoid the work area and any related risks."}
{"id": "train_09723", "split": "train", "clip_key": "2020-0203-114632_003386_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "003386"}, "frames": ["2020-0203-114632_003386_movie_t-3.jpg", "2020-0203-114632_003386_movie_t-2.jpg", "2020-0203-114632_003386_movie_t-1.jpg", "2020-0203-114632_003386_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of incoming white sedan", "environment_perception": "The scene shows a two-way urban street with one lane in each direction and a narrow bike lane along the curb, bordered by mid-rise buildings. The roadway is dry, there is no median, and traffic is light. A white box truck is coming toward the ego vehicle in the opposing right lane and continues straight past it. A white sedan is also approaching in that same oncoming lane near the curb, getting closer while staying in its lane. On the left sidewalk, a person with a bicycle is waiting by the railing near a crosswalk and does not enter the road.", "hazard_reasoning": "The main risk is the white sedan traveling toward the ego car in the oncoming lane. Although it remains in its lane, it is closing distance and could pose a collision risk if the driver does not account for it in time, so it should be treated as a minor oncoming-vehicle hazard."}
{"id": "train_09724", "split": "train", "clip_key": "2020-0203-154554_011452_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "011452"}, "frames": ["2020-0203-154554_011452_movie_t-3.jpg", "2020-0203-154554_011452_movie_t-2.jpg", "2020-0203-154554_011452_movie_t-1.jpg", "2020-0203-154554_011452_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging white van", "environment_perception": "The scene shows a straight urban roadway with three lanes in the ego direction on smooth pavement, with traffic moving steadily toward an intersection. A white van ahead transitions from the left lane into the ego lane and then continues farther ahead, widening the distance from the camera. A silver minivan in the right lane keeps going straight and moves away without interfering with the ego vehicle’s path. A cyclist is visible along the left curb near the sidewalk railing, traveling in the same direction but remaining outside the roadway. Several other vehicles ahead continue through the junction at a steady pace.", "hazard_reasoning": "The main concern is the white van merging from the left lane into the ego lane. Even though it is moving away, it still creates a lane-change conflict in the ego path, so the driver should stay alert and adjust speed if needed to prevent a possible collision."}
{"id": "train_09725", "split": "train", "clip_key": "2020-0226-140503_044075_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "044075"}, "frames": ["2020-0226-140503_044075_movie_t-3.jpg", "2020-0226-140503_044075_movie_t-2.jpg", "2020-0226-140503_044075_movie_t-1.jpg", "2020-0226-140503_044075_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "The scene shows a dry urban intersection with multiple lanes and no median, with moderate traffic and several vehicles close to the stop line. A silver sedan in the right opposing lane continues through the junction toward the ego vehicle, already past the crosswalk. A black SUV in the center opposing lane also moves straight through the intersection toward us while staying in lane. On the left side ahead, a white van is turning left and slightly blocks part of the ego lane, which slows the approach. Farther right beyond the intersection, a box truck is stopped at the curb near a construction area, acting as a roadside obstruction outside the driving lane.", "hazard_reasoning": "The key threat is the silver sedan in the right lane coming toward the ego car through the intersection. It appears to be running the red light, so the safest response is to stop right away because of the risk of a collision with the ego vehicle."}
{"id": "train_09726", "split": "train", "clip_key": "2020-0203-154554_032496_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "032496"}, "frames": ["2020-0203-154554_032496_movie_t-3.jpg", "2020-0203-154554_032496_movie_t-2.jpg", "2020-0203-154554_032496_movie_t-1.jpg", "2020-0203-154554_032496_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the bus merging ahead", "environment_perception": "This is an urban multi-lane roadway beneath an elevated expressway, with smooth pavement and moderate traffic flow. A large white coach bus ahead is moving into the ego lane and pulling in front of the ego vehicle, narrowing the space available. In the adjacent center lane, a small white van continues straight at about the same pace and does not intrude into the ego lane. Farther ahead in the right lane, a white minivan also travels steadily with open spacing. On the far left, beyond a planted divider, another coach bus is visible on a separate side road and is not part of the ego vehicle’s traffic stream. Overhead directional gantry signs can be seen.", "hazard_reasoning": "The main risk is the white bus merging into the ego lane directly ahead of the car. This creates a lane-change merge hazard, so the driver should slow or adjust position to keep a safe following gap behind the bus."}
{"id": "train_09727", "split": "train", "clip_key": "2020-0214-145407_004345_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "004345"}, "frames": ["2020-0214-145407_004345_movie_t-3.jpg", "2020-0214-145407_004345_movie_t-2.jpg", "2020-0214-145407_004345_movie_t-1.jpg", "2020-0214-145407_004345_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the black sedan slowing ahead", "environment_perception": "This is an urban multi-lane two-way road beneath an elevated expressway, with smooth pavement and moderate traffic moving steadily. In front of the ego vehicle, a black sedan in our lane slows and edges right to merge into the adjacent lane, momentarily affecting our forward progress. A silver minivan farther ahead remains in the lane and continues straight at a constant speed. On the right side, oncoming vehicles pass through the intersection but stay separated from the ego car.", "hazard_reasoning": "The main risk is the black sedan ahead, which is decelerating while shifting right to change lanes. It should be monitored closely in case it forces us to brake suddenly or adjust our path."}
{"id": "train_09728", "split": "train", "clip_key": "2020-0212-102546_074074_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "074074"}, "frames": ["2020-0212-102546_074074_movie_t-3.jpg", "2020-0212-102546_074074_movie_t-2.jpg", "2020-0212-102546_074074_movie_t-1.jpg", "2020-0212-102546_074074_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of lane obstruction ahead", "environment_perception": "This is an urban two-lane road traveling in the same direction, with a guardrail and shrubs along the right side. The pavement is dry and somewhat worn, and traffic is moving slowly because of roadside work. A large construction vehicle ahead in the ego lane is advancing at a crawl and effectively setting the pace. In the left lane, a small covered truck is also moving cautiously through the narrowed area beside the cones and work vehicle, leaving limited side clearance near the ego path. Near the left curb and close to the camera, a white service truck is parked, further tightening the available space. Orange cones are placed along the left side of the road, with additional small barriers inside that lane.", "hazard_reasoning": "The visible cone on the left side, together with the parked vehicle, forms a partial blockage of the left lane. This lane obstruction could force the driver to slow down or shift position to pass safely, so it represents the main hazard."}
{"id": "train_09729", "split": "train", "clip_key": "2020-0226-140503_044075_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "044075"}, "frames": ["2020-0226-140503_044075_movie_t-3.jpg", "2020-0226-140503_044075_movie_t-2.jpg", "2020-0226-140503_044075_movie_t-1.jpg", "2020-0226-140503_044075_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "Ahead is an urban multi-lane intersection without a median, with dry pavement and moderate traffic clustered near the stop line. A silver sedan in the right oncoming lane is moving straight through the intersection toward the ego vehicle, continuing past the crosswalk. A black SUV in the center oncoming lane is also traveling straight toward us through the junction while remaining in its lane. On the left side of the ego lane, a white van is turning left at the intersection and partially encroaches into the lane, slowing the ego vehicle’s progress. A box truck is parked at the curb on the right beyond the intersection next to a construction area, acting as a roadside obstruction outside the travel lanes.", "hazard_reasoning": "The main hazard is the silver sedan advancing toward the ego vehicle in the right lane. It appears to be entering against the signal, so it could collide with the ego vehicle. The safest response is to stop immediately."}
{"id": "train_09730", "split": "train", "clip_key": "2020-0225-145150_007010_movie", "source": {"subset": "drama", "scenario": "2020-0225-145150", "frame": "007010"}, "frames": ["2020-0225-145150_007010_movie_t-3.jpg", "2020-0225-145150_007010_movie_t-2.jpg", "2020-0225-145150_007010_movie_t-1.jpg", "2020-0225-145150_007010_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of the hatchback changing lanes ahead.", "environment_perception": "This scene shows a dry, multi-lane two-way urban arterial leading toward a signalized intersection, with three lanes in the ego vehicle’s direction and no physical median. A white hatchback ahead in the ego lane shifts left into the adjacent left lane directly in front of the ego car and settles into that space. In the right lane, a small white flatbed truck keeps going straight at nearly the same speed, slightly ahead and parallel to the ego vehicle. Farther beyond the junction, vehicles in the same direction continue normally, while opposing traffic moves in the other lanes. An overhead 50 speed-limit sign is visible, and a white van is parked at the left curb.", "hazard_reasoning": "The main hazard is the white hatchback merging left out of the ego lane directly ahead. Even though it is completing the maneuver, it can still cut into the ego vehicle’s forward space and shrink the following gap, so it warrants caution as a lane-change merge hazard."}
{"id": "train_09731", "split": "train", "clip_key": "titan_clip_791_000180_movie", "source": {"subset": "titan", "scenario": "clip_791", "frame": "000180"}, "frames": ["titan_clip_791_000180_movie_t-3.jpg", "titan_clip_791_000180_movie_t-2.jpg", "titan_clip_791_000180_movie_t-1.jpg", "titan_clip_791_000180_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of guard rails ahead", "environment_perception": "The scene shows a narrow urban two-way street with no median, bordered by buildings and smooth dry pavement under light traffic. Guard rails run along the left side beside the walkway. Ahead on the right curb, a white kei truck is stopped next to orange cones at a roadside work area, and another small truck is parked farther ahead on the same shoulder, further tightening space for opposing traffic. A pedestrian is also standing near the left guard rails by the curb, close to the travel path.", "hazard_reasoning": "The main concern is the guard rails along the left edge of the road. They leave less room for error and could be struck if the vehicle moves too far left, so the driver should keep clear of them and pass cautiously."}
{"id": "train_09732", "split": "train", "clip_key": "2020-0129-144857_050298_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "050298"}, "frames": ["2020-0129-144857_050298_movie_t-3.jpg", "2020-0129-144857_050298_movie_t-2.jpg", "2020-0129-144857_050298_movie_t-1.jpg", "2020-0129-144857_050298_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "The scene shows an urban divided road with a low center barrier ahead. The ego vehicle is traveling in a narrow curbside lane with worn patches, and this lane narrows as it approaches a rightward merge. A white box truck immediately ahead is moving from the ego lane into the right lane over the chevron-marked merge area. On the left sidewalk, a pedestrian remains beside the fence and does not step into the roadway. A small car farther ahead in the right through lane continues straight and does not interfere with the ego vehicle. A bollard and striped gore clearly indicate the merge separation.", "hazard_reasoning": "The main hazard is the white truck ahead changing lanes to the right. This merging movement can block the forward view and creates a need to keep a safe following gap and reduce speed."}
{"id": "train_09733", "split": "train", "clip_key": "2020-0228-102841_023344_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "023344"}, "frames": ["2020-0228-102841_023344_movie_t-3.jpg", "2020-0228-102841_023344_movie_t-2.jpg", "2020-0228-102841_023344_movie_t-1.jpg", "2020-0228-102841_023344_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of potential lane changes", "environment_perception": "The scene shows a multi-lane urban road leading into a signalized intersection under clear pavement conditions and light traffic. A black minivan is visible ahead in the left lane, continuing away from the ego vehicle through the junction in the same direction. On the right corner sidewalk, a few pedestrians with bicycles are waiting near the railing and crosswalk area, still outside the travel lane. Overhead traffic lights and roadside railings are present, and there are no obvious obstacles blocking the lane.", "hazard_reasoning": "The main attention point is the black minivan ahead in the left lane. Although it is moving away, it may shift lanes without warning and move into the ego vehicle’s intended path. Because of that possible merge or lane change, the situation calls for caution and monitoring."}
{"id": "train_09734", "split": "train", "clip_key": "titan_clip_791_000180_movie", "source": {"subset": "titan", "scenario": "clip_791", "frame": "000180"}, "frames": ["titan_clip_791_000180_movie_t-3.jpg", "titan_clip_791_000180_movie_t-2.jpg", "titan_clip_791_000180_movie_t-1.jpg", "titan_clip_791_000180_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of guard rails ahead", "environment_perception": "This is a narrow urban two-way road with no center divider, bordered by buildings and dry pavement, with very light traffic. Metal guard rails run along the left edge beside the sidewalk. On the right side, a white kei truck is stopped near the curb next to orange cones at a roadside work zone, and a second small truck is parked farther ahead on the same shoulder, making the opposite lane tighter. A pedestrian is standing near the left curb by the guard rails, stationary and close enough to the roadway to be a potential concern.", "hazard_reasoning": "The main concern is the guard-rail setup along the left side, which reduces usable space near the road edge. If the vehicle edges too far left, there is a risk of contacting the rails. Because the roadside work features and narrowed space affect the driving area, the situation should be treated as a construction-related hazard and approached carefully."}
{"id": "train_09735", "split": "train", "clip_key": "2020-0217-144444_012187_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "012187"}, "frames": ["2020-0217-144444_012187_movie_t-3.jpg", "2020-0217-144444_012187_movie_t-2.jpg", "2020-0217-144444_012187_movie_t-1.jpg", "2020-0217-144444_012187_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "This is an urban two-lane roadway with a low hedge median, and the ego lane curves gently to the right under light traffic. A small white van is far ahead in the same lane, moving slowly along the bend. To the right of the median, several oncoming cars continue through the curve without entering the ego path. On the left sidewalk, pedestrians are walking behind a guardrail and do not appear to be crossing. Near the left edge of the road, a parked vehicle has a traffic cone positioned in front of it, reducing the usable shoulder space slightly.", "hazard_reasoning": "The key hazard is the traffic cone placed beside the parked vehicle on the left side. It creates a roadside obstruction that drivers need to pass with care to avoid conflict and keep a safe line through the area."}
{"id": "train_09736", "split": "train", "clip_key": "2020-0226-140503_044075_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "044075"}, "frames": ["2020-0226-140503_044075_movie_t-3.jpg", "2020-0226-140503_044075_movie_t-2.jpg", "2020-0226-140503_044075_movie_t-1.jpg", "2020-0226-140503_044075_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "A dry urban intersection with multiple lanes and no median is visible ahead, with moderate traffic near the stop line. A silver sedan in the right oncoming lane continues straight through the junction toward the ego vehicle, passing the crosswalk area. A black SUV in the center oncoming lane also goes straight through the intersection toward us while staying centered in its lane. A white van ahead on the left side of the ego lane is turning left at the intersection and partly encroaches on the lane, slowing the ego vehicle’s progress. On the far right beyond the intersection, a box truck is stopped at the curb near a construction area, remaining outside the travel lane.", "hazard_reasoning": "The silver sedan is the main concern because it is moving through the intersection in the right lane toward the ego car. This creates a possible collision path, so the safest response is to stop immediately and avoid the approaching vehicle."}
{"id": "train_09737", "split": "train", "clip_key": "2020-0127-132751_060219_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "060219"}, "frames": ["2020-0127-132751_060219_movie_t-3.jpg", "2020-0127-132751_060219_movie_t-2.jpg", "2020-0127-132751_060219_movie_t-1.jpg", "2020-0127-132751_060219_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of black van cutting in", "environment_perception": "A straight urban roadway with two lanes in the same direction and double solid center lines is shown on smooth pavement under moderate traffic. A black van ahead-left is shifting right from the left lane into the ego lane, tightening the space in front of the ego vehicle as it merges. A silver hatchback continues steadily in the ego lane ahead, limiting the ego car’s available pace, while a box truck farther ahead keeps moving in the same lane and sets the traffic flow. No clear signals, roadworks, or other obstacles are visible.", "hazard_reasoning": "The main risk is the black van merging into the ego lane ahead of the car. Because it is cutting in from the left, it could require sudden braking or a quick steering response from the driver. This makes the van the critical hazard to watch."}
{"id": "train_09738", "split": "train", "clip_key": "2020-0228-102841_023344_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "023344"}, "frames": ["2020-0228-102841_023344_movie_t-3.jpg", "2020-0228-102841_023344_movie_t-2.jpg", "2020-0228-102841_023344_movie_t-1.jpg", "2020-0228-102841_023344_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of potential lane changes", "environment_perception": "The scene shows an urban two-way multilane road leading into a signalized intersection with clear pavement and light traffic. A black minivan is ahead in the left lane, continuing away from the ego vehicle through the junction. On the right corner sidewalk, a few pedestrians with bicycles are waiting by the railing and crosswalk, still outside the travel lane. Overhead traffic lights and roadside railings are visible, and there are no obvious obstacles blocking the lane.", "hazard_reasoning": "The black minivan ahead is the main moving vehicle to watch. Although it is traveling away from the ego car, it could shift lanes unexpectedly and move into the ego vehicle's path. Because of that possibility, the driver should remain cautious about a potential lane change."}
{"id": "train_09739", "split": "train", "clip_key": "2020-0217-144444_012187_movie", "source": {"subset": "drama", "scenario": "2020-0217-144444", "frame": "012187"}, "frames": ["2020-0217-144444_012187_movie_t-3.jpg", "2020-0217-144444_012187_movie_t-2.jpg", "2020-0217-144444_012187_movie_t-1.jpg", "2020-0217-144444_012187_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "The scene shows an urban two-lane roadway with a low hedge median and a gentle right-hand curve in the ego lane. A small white van is traveling ahead in the same lane, moving slowly through the bend. To the right beyond the median, several oncoming cars continue through the curve without entering the ego path. On the left sidewalk, pedestrians remain behind a guardrail and do not appear to be crossing. Along the left side of the road, a parked vehicle sits with a traffic cone positioned in front of it, reducing the usable shoulder space.", "hazard_reasoning": "The main issue is the traffic cone placed beside the parked vehicle on the left edge of the road. It creates a roadside obstacle that drivers must pass with care, so extra caution is needed to avoid it safely."}
{"id": "train_09740", "split": "train", "clip_key": "titan_clip_432_000318_movie", "source": {"subset": "titan", "scenario": "clip_432", "frame": "000318"}, "frames": ["titan_clip_432_000318_movie_t-3.jpg", "titan_clip_432_000318_movie_t-2.jpg", "titan_clip_432_000318_movie_t-1.jpg", "titan_clip_432_000318_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the cone", "environment_perception": "This is a narrow urban two-way road with one lane in each direction and light traffic, while the opposite lane remains open. On the left side of the ego lane, multiple construction trucks are parked beside a work area, reducing the available width, and green cones mark that edge. A person near a building entrance on the right sidewalk pauses and then continues walking without stepping into the road, and another pedestrian farther ahead stays along the fence line. Construction gear and stacked materials are also present at the left curb.", "hazard_reasoning": "The main issue is the green cone and work-zone layout on the left side, created by the parked vehicles and roadside construction. The driver needs to pass this area with care and keep enough clearance to avoid contact."}
{"id": "train_09741", "split": "train", "clip_key": "2020-0214-145407_036584_movie", "source": {"subset": "drama", "scenario": "2020-0214-145407", "frame": "036584"}, "frames": ["2020-0214-145407_036584_movie_t-3.jpg", "2020-0214-145407_036584_movie_t-2.jpg", "2020-0214-145407_036584_movie_t-1.jpg", "2020-0214-145407_036584_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck's lane change", "environment_perception": "The scene is a multi-lane urban road beneath an elevated roadway, with traffic moving in the same direction, a curb on the right, and clear pavement. A white box truck just ahead in the ego lane is shifting to the right lane in front of the vehicle. A taxi ahead-left keeps going straight without drifting over, while a darker car farther left appears to slow near a side street but remains within its lane. Overhead Japanese road signs are visible above the lanes.", "hazard_reasoning": "The main hazard is the white truck merging from the ego lane into the right lane directly ahead. This lane change creates a sudden interaction in front of the ego vehicle and could force the driver to slow or adjust position, so maintaining a safe gap is important."}
{"id": "train_09742", "split": "train", "clip_key": "2020-0228-102841_023344_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "023344"}, "frames": ["2020-0228-102841_023344_movie_t-3.jpg", "2020-0228-102841_023344_movie_t-2.jpg", "2020-0228-102841_023344_movie_t-1.jpg", "2020-0228-102841_023344_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of potential lane changes", "environment_perception": "The scene shows a multi-lane urban road leading into a signal-controlled intersection with clear pavement and sparse traffic. A black minivan is visible ahead in the left lane, moving away from the ego vehicle and continuing through the junction in the same direction. On the right corner sidewalk, a few pedestrians with bicycles are standing by the railing and crosswalk area, but they remain outside the travel lane. Overhead signals and roadside barriers are present, and the roadway ahead is unobstructed.", "hazard_reasoning": "The main vehicle of interest is the black minivan ahead in the left lane, traveling away from the ego car. Because it could shift position unexpectedly and move into the ego vehicle's path, the driver should remain alert for a possible lane change."}
{"id": "train_09743", "split": "train", "clip_key": "2020-0205-103411_114655_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "114655"}, "frames": ["2020-0205-103411_114655_movie_t-3.jpg", "2020-0205-103411_114655_movie_t-2.jpg", "2020-0205-103411_114655_movie_t-1.jpg", "2020-0205-103411_114655_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the black hatchback", "environment_perception": "A straight urban multi-lane road with a striped buffer on the right is being traveled in light traffic, and the pavement appears uneven with several patched areas. A black hatchback ahead moves from the left lane into the ego lane and then continues in front, briefly setting the pace. In the right lane farther ahead, a white van keeps a steady course without drifting toward the ego vehicle. An overhead direction sign and an overpass are visible in the distance, and there are no traffic lights present.", "hazard_reasoning": "The main concern is the black hatchback merging from the left lane into the ego lane directly ahead. Because it is changing into the ego vehicle’s path, it could create an unexpected conflict, so the driver should keep watching its position closely."}
{"id": "train_09744", "split": "train", "clip_key": "titan_clip_432_000318_movie", "source": {"subset": "titan", "scenario": "clip_432", "frame": "000318"}, "frames": ["titan_clip_432_000318_movie_t-3.jpg", "titan_clip_432_000318_movie_t-2.jpg", "titan_clip_432_000318_movie_t-1.jpg", "titan_clip_432_000318_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the cone", "environment_perception": "This is a narrow urban two-way road with one lane in each direction and clear pavement. The oncoming lane is open, while the left side of the ego lane is constrained by several parked construction trucks next to a work area, with green traffic cones marking that edge. On the right sidewalk, a pedestrian near a building entrance pauses and then continues walking without stepping into the roadway, and another person farther ahead remains on the sidewalk by a fence. Construction equipment and stacked materials are also present along the left curb as roadside obstacles.", "hazard_reasoning": "The most relevant hazard is the green traffic cone on the left side of the street, placed due to the parked vehicles and work site. It reduces usable space in the lane, so the driver should steer carefully around it to keep safe clearance and avoid contact."}
{"id": "train_09745", "split": "train", "clip_key": "2020-0212-102546_074074_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "074074"}, "frames": ["2020-0212-102546_074074_movie_t-3.jpg", "2020-0212-102546_074074_movie_t-2.jpg", "2020-0212-102546_074074_movie_t-1.jpg", "2020-0212-102546_074074_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of lane obstruction ahead", "environment_perception": "This is an urban two-lane road moving in the same direction, with a guardrail and shrubs on the right and dry, slightly worn pavement. Roadside work is slowing traffic. A large construction vehicle ahead in the ego lane is moving slowly and setting the pace. In the left lane ahead, a small covered truck is also advancing cautiously through the narrowed space near the cones beside the work vehicle, leaving limited room next to the ego path. Near the left curb by the camera, a white service truck is parked, which further tightens the left edge. Orange traffic cones mark the left side, including one cone on the roadway, and a few small barriers are present in that lane.", "hazard_reasoning": "The visible cone on the left side of the road indicates an active work zone obstruction. Together with the parked vehicle, it reduces usable space in the left lane and may force the driver to slow down or shift position to avoid contact."}
{"id": "train_09746", "split": "train", "clip_key": "2020-0131-103016_064375_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "064375"}, "frames": ["2020-0131-103016_064375_movie_t-3.jpg", "2020-0131-103016_064375_movie_t-2.jpg", "2020-0131-103016_064375_movie_t-1.jpg", "2020-0131-103016_064375_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming truck", "environment_perception": "The scene shows a broad urban arterial leading into a signalized intersection under a pedestrian overpass, with a central median and dry, well-maintained pavement. Traffic is moderate and moving slowly toward the junction. In the ego lanes, several trucks and cars ahead continue straight and set the pace. Ahead-right, an orange truck is coming toward the intersection in the opposing lane to the right of the ego vehicle and keeps traveling straight. At the far right edge, a silver van in the nearest oncoming lane approaches the crosswalk and also proceeds straight past the ego position.", "hazard_reasoning": "The main concern is the orange truck approaching head-on in the lane to the right of the ego car. It could move into the ego vehicle's path at the intersection, so the driver should yield to prevent a collision."}
{"id": "train_09747", "split": "train", "clip_key": "2020-0131-103016_064375_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "064375"}, "frames": ["2020-0131-103016_064375_movie_t-3.jpg", "2020-0131-103016_064375_movie_t-2.jpg", "2020-0131-103016_064375_movie_t-1.jpg", "2020-0131-103016_064375_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming truck", "environment_perception": "A broad signalized urban arterial leads into an intersection under a pedestrian overpass, with a center median and dry pavement. Traffic is moderate, and vehicles in the ego lane ahead are moving straight at a slow, steady pace. On the right front, an orange truck is coming toward the intersection in the opposing lane to the right of the ego vehicle and continues straight. At the far right edge, a silver van in the nearest oncoming lane also approaches the crosswalk and proceeds straight past the ego position.", "hazard_reasoning": "The main concern is the orange oncoming truck in the lane to the right of the ego car. It could enter the ego vehicle's path near the intersection, so the driver should yield to prevent a collision."}
{"id": "train_09748", "split": "train", "clip_key": "titan_clip_882_000108_movie", "source": {"subset": "titan", "scenario": "clip_882", "frame": "000108"}, "frames": ["titan_clip_882_000108_movie_t-3.jpg", "titan_clip_882_000108_movie_t-2.jpg", "titan_clip_882_000108_movie_t-1.jpg", "titan_clip_882_000108_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of cones blocking ego lane", "environment_perception": "The scene shows a narrow straight urban street with dry pavement, mid-rise buildings, and little traffic, with no painted centerline visible. Red cones are placed along the left side of the ego lane, marking that area off and limiting where vehicles can travel or stop. A white box truck is stopped ahead near the left curb in the lane, which squeezes the driving space, and another small truck farther ahead near the trees adds to the obstruction. On the right side, pedestrians stay on the sidewalk by a scaffolded building, while a uniformed attendant stands at the curb without entering the road.", "hazard_reasoning": "The main risk is the line of red traffic cones along the left edge of the ego lane. They take up part of the lane and narrow the usable path, so the driver must keep clear and position the vehicle carefully to avoid contact."}
{"id": "train_09749", "split": "train", "clip_key": "2020-0221-115122_020205_movie", "source": {"subset": "drama", "scenario": "2020-0221-115122", "frame": "020205"}, "frames": ["2020-0221-115122_020205_movie_t-3.jpg", "2020-0221-115122_020205_movie_t-2.jpg", "2020-0221-115122_020205_movie_t-1.jpg", "2020-0221-115122_020205_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the hatchback's lane change.", "environment_perception": "The scene shows a three-lane urban road beneath an elevated expressway, with dry, undamaged pavement and dense stop-and-go traffic. A white hatchback ahead moves from the left lane into the ego lane and settles directly in front, tightening the following distance. A dark taxi sedan is also queued farther ahead in the ego lane, while a dark minivan in the right lane advances slowly beside the ego vehicle.", "hazard_reasoning": "The main risk is the white hatchback merging into the ego lane from the left. Because it cuts in ahead of the car, it reduces the space in front and can force the driver to slow down more than expected. This is a lane-change merge situation, so caution is needed."}
{"id": "train_09750", "split": "train", "clip_key": "2020-0131-103016_064375_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "064375"}, "frames": ["2020-0131-103016_064375_movie_t-3.jpg", "2020-0131-103016_064375_movie_t-2.jpg", "2020-0131-103016_064375_movie_t-1.jpg", "2020-0131-103016_064375_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming truck", "environment_perception": "The scene shows a broad signalized urban intersection under a pedestrian overpass, with a central median and dry pavement. Traffic is fairly steady but slow, with several cars and trucks ahead in the same direction moving straight and setting the pace for the ego vehicle. On the right-front side, an orange truck is traveling toward the intersection in the opposing lane to the right of the ego car, while a silver van farther right also advances straight through the oncoming flow near the crosswalk.", "hazard_reasoning": "The main concern is the orange truck approaching head-on in the lane to the right of the ego vehicle. As it reaches the intersection, it could conflict with the ego vehicle's path, so the safe response is to yield and avoid a possible collision."}
{"id": "train_09751", "split": "train", "clip_key": "titan_clip_882_000108_movie", "source": {"subset": "titan", "scenario": "clip_882", "frame": "000108"}, "frames": ["titan_clip_882_000108_movie_t-3.jpg", "titan_clip_882_000108_movie_t-2.jpg", "titan_clip_882_000108_movie_t-1.jpg", "titan_clip_882_000108_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of cones blocking ego lane", "environment_perception": "A straight, narrow city side street with mid-rise buildings and dry pavement extends ahead, with no centerline and only light traffic. Red cones are placed along the left side of the ego lane, showing that parking is restricted there. A white box truck is stopped ahead by the left curb within the lane, leaving less room to pass, and a second smaller truck is also stationary farther ahead near the trees, making the corridor even tighter. On the right, people stay on the sidewalk near a scaffolded storefront, and a uniformed attendant stands at the curb without entering the roadway.", "hazard_reasoning": "The main concern is the row of red traffic cones on the left side of the ego lane. They take up part of the driving space and force the driver to steer carefully around them, creating a low-level construction-related hazard."}
{"id": "train_09752", "split": "train", "clip_key": "2020-0226-101332_058421_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "058421"}, "frames": ["2020-0226-101332_058421_movie_t-3.jpg", "2020-0226-101332_058421_movie_t-2.jpg", "2020-0226-101332_058421_movie_t-1.jpg", "2020-0226-101332_058421_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning van", "environment_perception": "Ahead is a signalized urban intersection with several lanes and painted turn bays, with no raised median. The road surface appears wet and traffic is moderate. Across from the ego vehicle, a white van in the oncoming left-turn lane is turning left toward the road on the right and moving through the intersection. Just to its left, a white box truck in the opposing through lane proceeds straight across the junction. At the near right corner, a silver van is still stopped at the line on the cross street, while a motor scooter inches forward along the curb; neither is entering the ego lane. Traffic lights and blue directional signs with right arrows are visible overhead.", "hazard_reasoning": "The main concern is the white van turning left from the oncoming lane. As it crosses the intersection, it could cut across the ego vehicle’s path, creating a possible collision risk. The situation calls for caution and monitoring of the van’s movement."}
{"id": "train_09753", "split": "train", "clip_key": "2020-0226-101332_058421_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "058421"}, "frames": ["2020-0226-101332_058421_movie_t-3.jpg", "2020-0226-101332_058421_movie_t-2.jpg", "2020-0226-101332_058421_movie_t-1.jpg", "2020-0226-101332_058421_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning van", "environment_perception": "Ahead is a signalized urban intersection with multiple lanes, painted turn bays, and no physical median. The road surface appears wet, and traffic is moderate. In the opposing direction, a white van in the left-turn lane is turning left across the intersection toward the road on the right. A white box truck in the oncoming through lane is also moving straight through the junction. On the near right corner, a silver van is still stopped at the line, while a motor scooter is creeping forward near the curb without entering the ego lane. Overhead signals and blue directional signs with right arrows are visible.", "hazard_reasoning": "The main concern is the white van in the oncoming left-turn lane as it turns across the intersection toward the road on the right. Its path could cross into your lane, so it should be monitored to avoid a possible collision."}
{"id": "train_09754", "split": "train", "clip_key": "2020-0220-102630_022190_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "022190"}, "frames": ["2020-0220-102630_022190_movie_t-3.jpg", "2020-0220-102630_022190_movie_t-2.jpg", "2020-0220-102630_022190_movie_t-1.jpg", "2020-0220-102630_022190_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging vehicle ahead", "environment_perception": "This is an urban multi-lane roadway lined with buildings, with a central guardrail separating the opposing direction. Traffic appears dense and moving slowly on a smooth road surface. Directly ahead in the ego lane, a white sedan is stopped with its right turn signal active and begins edging into the right lane, likely due to congestion. A large box truck is also stopped farther ahead in the same lane, adding to the queue. On the right side, a small covered truck is moving slowly beside the sedan, leaving little room for the merge.", "hazard_reasoning": "The main concern is the white sedan ahead, which is already stopped and shifting from the ego lane into the right lane because of traffic buildup. Since this merge is happening close ahead and the adjacent lane is occupied, the maneuver could affect the ego vehicle's path and timing. Safe following distance and readiness to slow down are needed, so this is a moderate merge hazard."}
{"id": "train_09755", "split": "train", "clip_key": "titan_clip_1291_000168_movie", "source": {"subset": "titan", "scenario": "clip_1291", "frame": "000168"}, "frames": ["titan_clip_1291_000168_movie_t-3.jpg", "titan_clip_1291_000168_movie_t-2.jpg", "titan_clip_1291_000168_movie_t-1.jpg", "titan_clip_1291_000168_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging van", "environment_perception": "The scene shows an urban two-way road with one lane in each direction and a solid yellow centerline, bending gently to the right. The road surface is clear and traffic is sparse. Near the center ahead in our path, a black van is moving into the right lane, leaning right and slowing as it crosses ahead. A white van farther ahead continues straight and is pulling away. On the left sidewalk beside an apartment entrance, a pedestrian is standing still and does not step into the street.", "hazard_reasoning": "The black van is the main concern because it is turning into the right lane and may enter or overlap your lane while merging. This creates a possible collision risk, so it should be watched closely."}
{"id": "train_09756", "split": "train", "clip_key": "titan_clip_305_000786_movie", "source": {"subset": "titan", "scenario": "clip_305", "frame": "000786"}, "frames": ["titan_clip_305_000786_movie_t-3.jpg", "titan_clip_305_000786_movie_t-2.jpg", "titan_clip_305_000786_movie_t-1.jpg", "titan_clip_305_000786_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of cones on the left", "environment_perception": "This is a tight urban side street with block paving and a single undivided lane, with little traffic. Cones and roadside signs are placed along both sides, and the road surface looks dry and clear. A white van is stationary on the right shoulder with its rear door open and a bit of its body extending into the lane, reducing the available space ahead. Several pedestrians are visible farther ahead near the middle of the roadway, moving slowly away and potentially encroaching on the vehicle’s path. On the left, a red no-stopping cone and no-parking signs mark a restricted section, with similar restrictions appearing along the street. No oncoming traffic is present.", "hazard_reasoning": "The most relevant hazard is the red no-stopping cone on the left side of the road. It indicates a restricted or work-related area ahead, so the driver should keep clear of that side and proceed cautiously to maintain safe clearance."}
{"id": "train_09757", "split": "train", "clip_key": "2020-0228-150133_003330_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "003330"}, "frames": ["2020-0228-150133_003330_movie_t-3.jpg", "2020-0228-150133_003330_movie_t-2.jpg", "2020-0228-150133_003330_movie_t-1.jpg", "2020-0228-150133_003330_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A dry, urban commercial roadway with two lanes in the same direction and no median shows light to moderate traffic. Ahead, a white box truck is shifting from the left lane into the ego vehicle’s lane as that left lane disappears. A woman is also visible at the left crosswalk starting to move rightward across the ego lane. Several bicyclists continue along the right curb, traveling straight near the edge.", "hazard_reasoning": "The main concern is the white truck merging from the left lane into the ego lane because its lane ends. This unexpected lane change creates a conflict in front of the car and may force the driver to slow down to keep a safe gap."}
{"id": "train_09758", "split": "train", "clip_key": "titan_clip_305_000786_movie", "source": {"subset": "titan", "scenario": "clip_305", "frame": "000786"}, "frames": ["titan_clip_305_000786_movie_t-3.jpg", "titan_clip_305_000786_movie_t-2.jpg", "titan_clip_305_000786_movie_t-1.jpg", "titan_clip_305_000786_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of cones on the left", "environment_perception": "This is a narrow urban side street with a block-paved surface and a single shared lane, so there is little room to pass. The weather and road surface look dry and clear. Along both sides are cones and parking-related signs. A white van is stopped on the right edge with its rear door open, slightly encroaching into the lane and tightening the available space ahead. A few pedestrians are visible farther ahead near the middle of the roadway, moving slowly away from the camera. On the left side, a red no-stopping cone and no-parking signage mark a restricted section, with similar signs repeated along the street. No oncoming traffic is present.", "hazard_reasoning": "The most relevant hazard is the red no-stopping cone on the left side of the road. It indicates a restricted area and a narrowed path, so the driver should keep clear of that side and proceed cautiously to avoid the cones and preserve safe clearance."}
{"id": "train_09759", "split": "train", "clip_key": "2020-0226-101332_058421_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "058421"}, "frames": ["2020-0226-101332_058421_movie_t-3.jpg", "2020-0226-101332_058421_movie_t-2.jpg", "2020-0226-101332_058421_movie_t-1.jpg", "2020-0226-101332_058421_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning van", "environment_perception": "A signalized urban intersection with multiple lanes, painted turn bays, and no physical median is ahead, and the roadway appears wet with moderate traffic. Across from the ego vehicle, a white van in the oncoming left-turn lane is turning left toward the road on the right, moving through the intersection. A white box truck in the adjacent oncoming through lane continues straight through the junction. On the near right corner, a silver van stays stopped at the line while a motor scooter creeps forward near the curb, but neither enters the ego lane. Overhead signals and blue direction signs with right-pointing arrows are visible.", "hazard_reasoning": "The main concern is the white van in the oncoming left-turn lane as it turns across the intersection toward the right-side road. Its path could cross into your lane, so it should be monitored closely to avoid a possible collision."}
{"id": "train_09760", "split": "train", "clip_key": "2020-0210-101957_080654_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "080654"}, "frames": ["2020-0210-101957_080654_movie_t-3.jpg", "2020-0210-101957_080654_movie_t-2.jpg", "2020-0210-101957_080654_movie_t-1.jpg", "2020-0210-101957_080654_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "This scene shows a lightly trafficked urban two-way road with one lane in each direction and a solid yellow divider. Ahead is a signalized intersection with a zebra crossing. In the ego lane, a brown construction vehicle is moving slowly in front, limiting forward progress. An oncoming white car passes through the intersection in the opposite lane, and another white car is waiting on the right at a side street, ready to merge when possible.", "hazard_reasoning": "The main concern is the brown construction vehicle ahead in the ego lane. Because it is moving slowly and could slow further or stop without much warning, the safest response is to keep distance and follow it carefully."}
{"id": "train_09761", "split": "train", "clip_key": "2020-0203-114632_005195_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005195"}, "frames": ["2020-0203-114632_005195_movie_t-3.jpg", "2020-0203-114632_005195_movie_t-2.jpg", "2020-0203-114632_005195_movie_t-1.jpg", "2020-0203-114632_005195_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming truck.", "environment_perception": "The scene shows a narrow urban two-way road with a center line, lined by low-rise storefronts and smooth pavement. Traffic is moderate, but the roadway ahead is partly restricted by roadside work. On the right in the opposing lane, a green city bus is moving slowly past the work zone and taking up much of that lane. A white truck follows behind it in the oncoming lane, heading toward the ego vehicle at a similar slow pace. In the ego lane, a construction worker stands next to orange cones and appears to be controlling the work area, keeping the ego car stopped. A small work truck is also parked ahead inside the coned-off section, obstructing the lane.", "hazard_reasoning": "The main threat is the white truck approaching in the oncoming lane. Since it is moving toward the ego vehicle, the driver should yield to avoid a possible head-on collision."}
{"id": "train_09762", "split": "train", "clip_key": "2020-0210-101957_080654_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "080654"}, "frames": ["2020-0210-101957_080654_movie_t-3.jpg", "2020-0210-101957_080654_movie_t-2.jpg", "2020-0210-101957_080654_movie_t-1.jpg", "2020-0210-101957_080654_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "This is an urban two-way road with one lane in each direction, divided by a solid yellow centerline. The pavement is clear and traffic is light. Ahead is a signalized intersection with a zebra crossing. A brown construction vehicle is directly in front in the ego lane and is moving slowly, limiting the ego vehicle’s speed. A white oncoming car passes through the intersection in the opposite lane, while another white car is waiting at the right-side street, ready to merge when gaps appear.", "hazard_reasoning": "The main concern is the brown construction vehicle ahead in the ego lane. Because it is moving slowly and could brake or stop without much notice, the safest response is to keep a steady following distance behind it."}
{"id": "train_09763", "split": "train", "clip_key": "2020-0228-102841_054579_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "054579"}, "frames": ["2020-0228-102841_054579_movie_t-3.jpg", "2020-0228-102841_054579_movie_t-2.jpg", "2020-0228-102841_054579_movie_t-1.jpg", "2020-0228-102841_054579_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the turning truck", "environment_perception": "A signal-controlled urban intersection with left-hand traffic is ahead on a smooth multilane road, and the ego vehicle is stopped at the stop line. Cross traffic is present. In the junction, a small white truck is turning across the front of the ego car into the ego lane, where it becomes the lead vehicle as it finishes the maneuver. Slightly to the right of center, a silver van keeps traveling straight from right to left through the intersection without moving into the ego lane. A pedestrian is also crossing on the right-side crosswalk in front of the waiting traffic. The signal for the ego direction is red.", "hazard_reasoning": "The main hazard is the white truck moving into the ego lane ahead of the vehicle at the intersection. Because it is cutting across and merging into your lane, continuing forward could result in a collision, so the correct response is to yield."}
{"id": "train_09764", "split": "train", "clip_key": "2020-0207-151349_004985_movie", "source": {"subset": "drama", "scenario": "2020-0207-151349", "frame": "004985"}, "frames": ["2020-0207-151349_004985_movie_t-3.jpg", "2020-0207-151349_004985_movie_t-2.jpg", "2020-0207-151349_004985_movie_t-1.jpg", "2020-0207-151349_004985_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The view is of a busy urban two-way road opening into a wide intersection with lane markings and clear directional arrows on smooth pavement. A silver van ahead moves across into the ego lane in the center of the intersection and then continues forward, briefly affecting the ego vehicle’s progress. A black sedan farther ahead on the right turns toward the uphill lanes and pulls away, staying clear of the ego path. A motorcyclist in the right lane goes straight through alongside the ego vehicle without cutting in, while oncoming traffic is separated on the far side and bicycles are parked along the left curb.", "hazard_reasoning": "The main risk is the silver van merging into the ego lane in front of the vehicle. Because this lane change happens unexpectedly in the intersection, it can require the driver to slow or brake to keep a safe gap, so the situation calls for caution."}
{"id": "train_09765", "split": "train", "clip_key": "2020-0203-114632_005195_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005195"}, "frames": ["2020-0203-114632_005195_movie_t-3.jpg", "2020-0203-114632_005195_movie_t-2.jpg", "2020-0203-114632_005195_movie_t-1.jpg", "2020-0203-114632_005195_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming truck.", "environment_perception": "The scene shows a narrow two-way urban street with a center line, lined by low-rise shops and in good road condition. Traffic is moderate but the roadway is partially blocked by work activity ahead. On the right in the oncoming lane, a green city bus is moving slowly through the work area, taking up much of its lane. A white truck follows behind it in the same oncoming lane and is traveling toward the ego vehicle. In the ego lane, a construction worker is standing beside orange cones and appears to be controlling the work zone, which has stopped the ego car. A small work truck is also parked ahead inside the coned area, obstructing the lane.", "hazard_reasoning": "The main hazard is the white truck approaching in the oncoming lane. Because it is coming directly toward the ego vehicle, the driver should yield and remain cautious to prevent a possible head-on collision."}
{"id": "train_09766", "split": "train", "clip_key": "titan_clip_871_000228_movie", "source": {"subset": "titan", "scenario": "clip_871", "frame": "000228"}, "frames": ["titan_clip_871_000228_movie_t-3.jpg", "titan_clip_871_000228_movie_t-2.jpg", "titan_clip_871_000228_movie_t-1.jpg", "titan_clip_871_000228_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "A quiet urban side street with no centerline leads into a small junction with zebra crossings. The road surface is clear and there are no moving vehicles. Traffic cones line the left side, marking a construction area and making the lane narrower. Two pedestrians ahead are stepping from the right side across the crosswalk toward the left, overlapping the ego route. A man near the left foreground is walking toward the camera along the road edge, while another pedestrian farther ahead stays near the cones and moves away outside the lane.", "hazard_reasoning": "The key hazard is the cone-marked construction area on the left. It indicates ongoing work and a narrowed roadway, so the driver needs to proceed carefully and keep clear of the work zone."}
{"id": "train_09767", "split": "train", "clip_key": "titan_clip_871_000228_movie", "source": {"subset": "titan", "scenario": "clip_871", "frame": "000228"}, "frames": ["titan_clip_871_000228_movie_t-3.jpg", "titan_clip_871_000228_movie_t-2.jpg", "titan_clip_871_000228_movie_t-1.jpg", "titan_clip_871_000228_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre", "environment_perception": "The scene is an urban side street leading into a small intersection with zebra crossings and no centerline. The road surface is clear and traffic is sparse, with no moving vehicles visible. A row of cones on the left marks a construction area and makes the available road space narrower. Ahead, two pedestrians are crossing from right to left on the zebra crossing, while a man near the left foreground is walking toward the camera along the road edge. Another pedestrian farther ahead moves away beside the cones and remains outside the lane.", "hazard_reasoning": "The cones on the left indicate road construction and a narrowed driving path. Since the work zone is close to the lane, the main risk is entering or brushing the construction area, so the driver should proceed cautiously and keep clear of it."}
{"id": "train_09768", "split": "train", "clip_key": "2020-0227-104226_077311_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "077311"}, "frames": ["2020-0227-104226_077311_movie_t-3.jpg", "2020-0227-104226_077311_movie_t-2.jpg", "2020-0227-104226_077311_movie_t-1.jpg", "2020-0227-104226_077311_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of road cones ahead", "environment_perception": "This is a calm residential two-way street with left-hand traffic, one narrow lane in each direction, and no central divider. The road surface looks clear, and traffic is light. The ego vehicle is proceeding straight in the left lane. A black minivan ahead in the same lane is moving steadily and remains in front, setting the flow. No oncoming traffic is close by. On the right side of the road ahead, two orange traffic cones are placed near the shoulder. A red car sits parked behind a barrier on the right, with guardrails and walls enclosing the narrow roadway.", "hazard_reasoning": "The two cones on the right suggest possible road work or an obstacle area ahead. While they do not block the lane, they indicate a minor construction-related hazard, so the driver should stay attentive and avoid abrupt actions."}
{"id": "train_09769", "split": "train", "clip_key": "2020-0203-114632_005195_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005195"}, "frames": ["2020-0203-114632_005195_movie_t-3.jpg", "2020-0203-114632_005195_movie_t-2.jpg", "2020-0203-114632_005195_movie_t-1.jpg", "2020-0203-114632_005195_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming truck.", "environment_perception": "This is a narrow urban two-way road with a center line, lined by low-rise shops and smooth pavement. Traffic is moderate, but the scene is partly blocked by roadside work ahead. In the right-side oncoming lane, a green city bus is moving slowly past the work zone and taking up much of the lane. A white truck is following behind it, also coming toward the ego vehicle. In the ego lane, a construction worker stands next to orange cones and appears to be directing the work area, which is why the ego vehicle is stopped. A small work truck is parked farther ahead inside the coned-off section, blocking the lane.", "hazard_reasoning": "The main hazard is the white truck approaching in the oncoming lane. Since it is moving toward the ego car, the driver should yield to avoid a possible head-on conflict."}
{"id": "train_09770", "split": "train", "clip_key": "2020-0204-150838_034255_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "034255"}, "frames": ["2020-0204-150838_034255_movie_t-3.jpg", "2020-0204-150838_034255_movie_t-2.jpg", "2020-0204-150838_034255_movie_t-1.jpg", "2020-0204-150838_034255_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A city intersection with multiple lanes and faded zebra crossings is visible, with no median and moderate traffic moving in both directions; the road surface appears dry and traffic is flowing steadily. A white van ahead moves over from the left lane into the ego lane directly in front, continuing through the intersection and becoming the lead vehicle. On the right, another white van travels alongside in the adjacent lane, going straight and leaving limited space there. A black car farther right crosses the junction in its lane without interfering with the ego vehicle’s path. Several pedestrians are standing on the sidewalks near the crosswalks and are not entering the road.", "hazard_reasoning": "The main risk is the white van merging from the left lane into the ego lane ahead of the car. The appropriate response is to reduce speed and keep a safe following gap to avoid a potential collision."}
{"id": "train_09771", "split": "train", "clip_key": "2020-0127-132751_059815_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "059815"}, "frames": ["2020-0127-132751_059815_movie_t-3.jpg", "2020-0127-132751_059815_movie_t-2.jpg", "2020-0127-132751_059815_movie_t-1.jpg", "2020-0127-132751_059815_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Yield to the merging vehicle", "environment_perception": "This is a built-up urban arterial with two lanes in the same direction, separated by a double solid center divider, and the road surface appears dry and clear. Traffic is moderate and moving steadily, with some oncoming vehicles visible on the right. In the left lane ahead, a black minivan is shifting rightward toward the ego lane to get around a parked vehicle near the curb, briefly encroaching into the ego vehicle’s path. A white hatchback is traveling steadily directly ahead in the ego lane, while a box truck farther ahead in the adjacent lane is moving more slowly and appears to be part of the traffic flow affecting the merge.", "hazard_reasoning": "The main hazard is the black minivan merging from the left lane into the ego lane because of the parked vehicle. Since it is entering the ego path, there is a conflict risk, and the safest response is to give it space and yield."}
{"id": "train_09772", "split": "train", "clip_key": "2020-0207-101955_074010_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "074010"}, "frames": ["2020-0207-101955_074010_movie_t-3.jpg", "2020-0207-101955_074010_movie_t-2.jpg", "2020-0207-101955_074010_movie_t-1.jpg", "2020-0207-101955_074010_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck's lane change", "environment_perception": "This is a divided urban roadway with two lanes moving in the same direction, bordered by sound barriers, a concrete median on the left, and a striped gore with flexible posts on the right. The pavement is clear and traffic is sparse, with the road bending slightly to the right ahead. A green truck in the ego lane is moving over into the right lane and slows briefly as it merges, reducing the distance to the ego vehicle. Farther ahead in the right lane, a white bus keeps going straight at a steady speed. No pedestrians, cyclists, or other obstacles are visible, and the median blocks any oncoming traffic.", "hazard_reasoning": "The main hazard is the green truck ahead shifting into the right lane. Its lane change and brief slowdown can interfere with the ego car’s forward space, so the driver should maintain awareness and adjust following distance."}
{"id": "train_09773", "split": "train", "clip_key": "2020-0207-101955_074053_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "074053"}, "frames": ["2020-0207-101955_074053_movie_t-3.jpg", "2020-0207-101955_074053_movie_t-2.jpg", "2020-0207-101955_074053_movie_t-1.jpg", "2020-0207-101955_074053_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck merging.", "environment_perception": "The scene shows an urban divided roadway with two lanes traveling the same direction and a concrete median barrier. The road surface looks clear, with light traffic overall. In front of the ego vehicle, a white and green covered truck is moving from the ego lane into the lane on the right, gradually completing its lane change and influencing the ego vehicle’s forward pace. No nearby vehicles are close in the same direction, and there is no visible oncoming traffic beyond the barrier. On the right side, a striped gore area with posts borders a diverging lane, and overhead gantries are visible but the signs cannot be read.", "hazard_reasoning": "The main concern is the white and green truck shifting out of the ego lane into the right lane. Because it is actively changing lanes ahead, it may affect the vehicle’s path and requires caution as the merge completes."}
{"id": "train_09774", "split": "train", "clip_key": "2020-0129-105040_005057_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "005057"}, "frames": ["2020-0129-105040_005057_movie_t-3.jpg", "2020-0129-105040_005057_movie_t-2.jpg", "2020-0129-105040_005057_movie_t-1.jpg", "2020-0129-105040_005057_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a straight urban arterial with multiple lanes, smooth roadway, and tall buildings on both sides, separated by a planted median with railings. Traffic is moderate and moving steadily in the left-driving direction. A gray minivan in the ego lane is directly ahead and traveling at about the same speed, setting the immediate following distance. Ahead of it, a white box truck continues straight and leaves only a small gap. A white van is also visible in the left adjacent lane, keeping pace without merging. To the right of the median, several trucks are traveling as oncoming traffic. Blue overhead direction signs can be seen above the road.", "hazard_reasoning": "The main concern is the gray minivan ahead in the ego lane, since it could slow down or brake without much notice. To stay safe, the vehicle should keep a proper following distance and be ready for the minivan’s speed to change."}
{"id": "train_09775", "split": "train", "clip_key": "2020-0227-104226_077311_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "077311"}, "frames": ["2020-0227-104226_077311_movie_t-3.jpg", "2020-0227-104226_077311_movie_t-2.jpg", "2020-0227-104226_077311_movie_t-1.jpg", "2020-0227-104226_077311_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of road cones ahead", "environment_perception": "This is a calm residential two-way road with left-hand traffic, one narrow lane in each direction, and no median. The pavement looks clear and traffic is light. The ego vehicle is moving straight in the left lane. A black minivan ahead in the same lane is maintaining a steady speed and effectively leading the flow. No oncoming traffic is present in the near distance. On the right side ahead, two orange traffic cones are placed near the shoulder. A red car sits parked off to the right behind a barrier, while guardrails and walls frame the narrow roadway.", "hazard_reasoning": "The pair of cones on the right suggests possible road work or an obstruction ahead. Although the risk is not immediate, the driver should stay alert and be ready for minor course adjustments if needed."}
{"id": "train_09776", "split": "train", "clip_key": "titan_clip_1076_000570_movie", "source": {"subset": "titan", "scenario": "clip_1076", "frame": "000570"}, "frames": ["titan_clip_1076_000570_movie_t-3.jpg", "titan_clip_1076_000570_movie_t-2.jpg", "titan_clip_1076_000570_movie_t-1.jpg", "titan_clip_1076_000570_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the traffic cone", "environment_perception": "This is a narrow uphill urban street with a single lane and no median, tightly flanked by buildings. The road surface appears clear and traffic is sparse, with no vehicles present. Ahead in the lane, a small group of pedestrians is moving away and occupying the path, while another pedestrian is close to the right curb near the front of the ego vehicle. On the left side, orange traffic cones mark a cordoned-off work area with some bagged debris beside it.", "hazard_reasoning": "The most relevant hazard is the orange traffic cone on the left side of the road. It reduces the available driving space and indicates roadwork activity, so the vehicle should pass with care to avoid contact."}
{"id": "train_09777", "split": "train", "clip_key": "2020-0210-155354_045076_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "045076"}, "frames": ["2020-0210-155354_045076_movie_t-3.jpg", "2020-0210-155354_045076_movie_t-2.jpg", "2020-0210-155354_045076_movie_t-1.jpg", "2020-0210-155354_045076_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows a smooth urban road with two lanes in each direction divided by double solid center lines, and overall traffic is light to moderate. The ego vehicle is traveling in the right lane for its direction while a white sedan ahead is moving out of that lane and into the left lane, briefly influencing the flow in front. A second car farther ahead remains in the left lane and continues straight without interfering with the ego vehicle. Oncoming traffic, including a white van, travels steadily in the opposite lanes to the right, separated by the center markings. A construction zone with cement trucks is visible on the far right behind barriers.", "hazard_reasoning": "The main concern is the white sedan shifting from the ego lane into the left lane. Because this lane change could interfere with the ego vehicle’s path unexpectedly, the safest response is to slow down and keep distance."}
{"id": "train_09778", "split": "train", "clip_key": "titan_clip_1076_000570_movie", "source": {"subset": "titan", "scenario": "clip_1076", "frame": "000570"}, "frames": ["titan_clip_1076_000570_movie_t-3.jpg", "titan_clip_1076_000570_movie_t-2.jpg", "titan_clip_1076_000570_movie_t-1.jpg", "titan_clip_1076_000570_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Manoeuvre carefully around the traffic cone", "environment_perception": "The scene shows a narrow uphill urban road with one forward lane and no median, tightly lined by buildings. The pavement appears clear and traffic is sparse, with no moving vehicles present. Several pedestrians are ahead in the lane, moving away from the vehicle and occupying the forward path. On the right side near the camera, another pedestrian is walking along the curb in the vehicle’s direction and is close enough to the roadway to slightly reduce clearance. Along the left edge, orange traffic cones mark a work area, with one cone beside a cordoned section and some bagged debris.", "hazard_reasoning": "The most relevant hazard is the orange traffic cone on the left side of the road. It reduces usable lane width and indicates road works, so the vehicle should pass with care to avoid contact."}
{"id": "train_09779", "split": "train", "clip_key": "2020-0227-104226_054580_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054580"}, "frames": ["2020-0227-104226_054580_movie_t-3.jpg", "2020-0227-104226_054580_movie_t-2.jpg", "2020-0227-104226_054580_movie_t-1.jpg", "2020-0227-104226_054580_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the approaching sedan", "environment_perception": "The scene shows an urban two-way road with a single lane in each direction and a yellow center line, with smooth pavement and moderate, steady traffic as the ego vehicle nears a signalized intersection. A silver hatchback ahead in the ego lane continues straight through with a short following gap. To the front-right, a black microvan coming from the opposite direction moves through the junction in its lane, staying near the center line but not crossing it. A blue sedan is visible in the middle of the intersection, heading toward the ego car in the right oncoming lane and leaving less side clearance. Pedestrian signal heads on both sides display the walk symbol.", "hazard_reasoning": "The main risk is the blue sedan approaching head-on from the oncoming lane in the intersection. Although it remains in its lane, its position and motion reduce lateral clearance and create a possible conflict with the ego vehicle’s path. This makes it the most relevant hazard, so the driver should be ready to yield and avoid a collision."}
{"id": "train_09780", "split": "train", "clip_key": "2020-0129-105040_005057_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "005057"}, "frames": ["2020-0129-105040_005057_movie_t-3.jpg", "2020-0129-105040_005057_movie_t-2.jpg", "2020-0129-105040_005057_movie_t-1.jpg", "2020-0129-105040_005057_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "A wide urban arterial with smooth asphalt passes between tall buildings and is split by a planted median with guardrails. Traffic is moderate and moving steadily in the left-hand traffic flow. In the ego lane, a gray minivan is directly ahead and maintains nearly the same speed, setting the current following distance. Farther up the same lane, a white box truck continues straight, which leaves the minivan with little room ahead. A white van is traveling parallel in the left lane without shifting over. On the far side of the median, several trucks are approaching in the opposite direction, and blue overhead direction signs can be seen.", "hazard_reasoning": "The main concern is the vehicle ahead in the ego lane. Because the gray minivan has limited space in front of it and could slow down, the safe response is to keep a proper gap and follow it carefully."}
{"id": "train_09781", "split": "train", "clip_key": "2020-0205-103411_047196_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "047196"}, "frames": ["2020-0205-103411_047196_movie_t-3.jpg", "2020-0205-103411_047196_movie_t-2.jpg", "2020-0205-103411_047196_movie_t-1.jpg", "2020-0205-103411_047196_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of hatchback changing lanes", "environment_perception": "A multi-lane urban roadway with smooth asphalt and no raised median has moderate traffic, while oncoming vehicles travel on the right side. Near a signalized intersection, a black hatchback ahead of the ego vehicle begins moving left into the adjacent lane, momentarily narrowing the available space. A silver sedan is traveling straight in the left lane just ahead, which limits that lane shift, and a white sedan in the right lane continues forward at a similar pace without entering the ego path. Traffic lights are visible ahead, and construction barriers sit along the left sidewalk but remain separate from the driving lane.", "hazard_reasoning": "The black hatchback directly ahead is changing into the left lane and could intrude into the ego vehicle’s path during the maneuver. Because of this possible merge, the driver should keep attention on it and maintain a safe following gap."}
{"id": "train_09782", "split": "train", "clip_key": "titan_clip_82_000108_movie", "source": {"subset": "titan", "scenario": "clip_82", "frame": "000108"}, "frames": ["titan_clip_82_000108_movie_t-3.jpg", "titan_clip_82_000108_movie_t-2.jpg", "titan_clip_82_000108_movie_t-1.jpg", "titan_clip_82_000108_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of traffic cones", "environment_perception": "The scene shows a dense urban roadway where the ego car is traveling in the left lane of a narrow two-way street with clear pavement and very light traffic. A small white mini-truck is visible far ahead in the same lane, moving straight and not blocking the path. The opposite lanes are empty. Along the left edge, traffic cones indicate a roadside work area with barricades that slightly reduce the lane width. On the right, metal bollards and a stairway border the sidewalk, and no other notable hazards or signals stand out.", "hazard_reasoning": "The main concern is the row of traffic cones on the left side, which indicates road construction. This work zone may narrow the drivable space, so the ego vehicle should keep a safe margin while passing."}
{"id": "train_09783", "split": "train", "clip_key": "2020-0227-104226_054580_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054580"}, "frames": ["2020-0227-104226_054580_movie_t-3.jpg", "2020-0227-104226_054580_movie_t-2.jpg", "2020-0227-104226_054580_movie_t-1.jpg", "2020-0227-104226_054580_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the approaching sedan", "environment_perception": "The scene shows an urban two-way road with one lane in each direction and a yellow center line, with smooth pavement and moderate, steady traffic as the ego vehicle nears a signalized intersection. A silver hatchback ahead in the ego lane continues straight ahead with a small gap in front, leading the flow. At the right front, an oncoming black microvan moves through the junction in its own lane, staying near the center line but not crossing it. A blue sedan is visible in the middle of the intersection, coming toward the ego vehicle in the right oncoming lane and reducing the side clearance. Pedestrian signals on both sides are showing the walk symbol.", "hazard_reasoning": "The blue sedan in the intersection is approaching the ego car head-on from the right oncoming lane. Because it is moving straight toward the ego path, it could intrude into the vehicle's path and create a collision risk if the ego driver does not yield, so caution is needed."}
{"id": "train_09784", "split": "train", "clip_key": "2020-0204-150838_068999_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "068999"}, "frames": ["2020-0204-150838_068999_movie_t-3.jpg", "2020-0204-150838_068999_movie_t-2.jpg", "2020-0204-150838_068999_movie_t-1.jpg", "2020-0204-150838_068999_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "be aware of lane change", "environment_perception": "The scene shows a raised urban expressway with two lanes heading the same direction, bordered by concrete barriers on both sides. The road surface is clear and traffic remains light. A silver box truck ahead in the ego lane moves left over the dashed lane line into the neighboring left lane, passing in front of the ego vehicle and then proceeding there, causing a brief impact on the ego car's pace. Several vehicles are visible farther ahead in the left lane, but they do not interact. No traffic lights, signs, pedestrians, or cyclists are present.", "hazard_reasoning": "The key hazard is the silver truck shifting from the ego lane into the left lane directly ahead. This lane change may affect the ego vehicle's path and speed, so the driver should stay alert to the truck's movement and keep a safe following distance."}
{"id": "train_09785", "split": "train", "clip_key": "titan_clip_82_000108_movie", "source": {"subset": "titan", "scenario": "clip_82", "frame": "000108"}, "frames": ["titan_clip_82_000108_movie_t-3.jpg", "titan_clip_82_000108_movie_t-2.jpg", "titan_clip_82_000108_movie_t-1.jpg", "titan_clip_82_000108_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Be aware of traffic cones", "environment_perception": "The scene shows a dense urban street where the ego car is traveling in the left lane of a narrow two-way road. Traffic is sparse. A small white mini-truck is visible well ahead in the same lane, moving straight and not affecting the ego vehicle’s course. The opposite side of the road is clear of oncoming traffic. Along the left edge, traffic cones and barricades indicate a work zone that slightly reduces the usable road width. On the right, metal bollards and a stairway line the sidewalk, with no other notable signals or threats present.", "hazard_reasoning": "The main concern is the row of traffic cones on the left side, which signals roadside construction and a narrowed lane edge. This creates a minor need for extra clearance and attention, but it does not appear to pose an immediate collision risk."}
{"id": "train_09786", "split": "train", "clip_key": "2020-0227-104226_054580_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054580"}, "frames": ["2020-0227-104226_054580_movie_t-3.jpg", "2020-0227-104226_054580_movie_t-2.jpg", "2020-0227-104226_054580_movie_t-1.jpg", "2020-0227-104226_054580_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the approaching sedan", "environment_perception": "The scene shows an urban two-way road with a single lane in each direction and a yellow center line, with the ego vehicle nearing a signalized intersection on smooth pavement under steady traffic. A silver hatchback ahead in the ego lane continues straight and maintains a short lead. To the right front, a black microvan is also moving through the junction in the opposite direction lane, staying near the center line but not crossing it. In the center of the intersection, a blue sedan is heading toward the ego car in the right oncoming lane, reducing the available lateral space. Pedestrian signals on both sides show the walk indication.", "hazard_reasoning": "The main concern is the blue sedan approaching head-on in the intersection from the oncoming lane. Because it is moving directly toward the ego vehicle and remains close enough to narrow clearance, it presents a potential collision risk if the path is not yielded. The safest response is to slow and give way to the approaching sedan."}
{"id": "train_09787", "split": "train", "clip_key": "2020-0204-150838_068834_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "068834"}, "frames": ["2020-0204-150838_068834_movie_t-3.jpg", "2020-0204-150838_068834_movie_t-2.jpg", "2020-0204-150838_068834_movie_t-1.jpg", "2020-0204-150838_068834_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the truck changing lanes", "environment_perception": "This is an elevated urban expressway with two lanes traveling in the same direction, bordered by concrete barriers on both sides. The pavement looks dry and clear, and traffic is moving at a light-to-moderate pace. A silver box truck ahead of the ego vehicle shifts left from the ego lane into the left lane, briefly reducing the spacing in front. A white flatbed truck is in the left lane, slightly behind and beside the ego vehicle at a similar speed, which limits the open gap for that maneuver. Farther ahead in the left lane, another truck continues straight and sets the flow ahead. No notable signs, signals, or road obstacles stand out.", "hazard_reasoning": "The main hazard is the silver truck moving laterally across in front of the ego vehicle into the left lane. Because it is merging ahead, the driver may need to react by slowing or adjusting position to maintain a safe gap."}
{"id": "train_09788", "split": "train", "clip_key": "2020-0129-105040_005057_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "005057"}, "frames": ["2020-0129-105040_005057_movie_t-3.jpg", "2020-0129-105040_005057_movie_t-2.jpg", "2020-0129-105040_005057_movie_t-1.jpg", "2020-0129-105040_005057_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "A multi-lane urban arterial with smooth pavement passes between tall buildings and is separated by a planted median with railings. Traffic is moderate and moving steadily in the left-driving direction. A gray minivan ahead in the ego lane continues straight at nearly the same speed, becoming the main vehicle to track. Farther ahead in that same direction, a white box truck also goes straight and leaves little space in front of the minivan. On the left, a white van stays beside the ego vehicle in the adjacent lane without merging. Across the median on the right, several trucks are traveling as oncoming traffic. Blue overhead direction signs are visible.", "hazard_reasoning": "The gray minivan in front is the key vehicle in the ego lane. Because it may slow down or brake unexpectedly, the safest response is to keep following it at a controlled distance."}
{"id": "train_09789", "split": "train", "clip_key": "2020-0129-105040_020032_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "020032"}, "frames": ["2020-0129-105040_020032_movie_t-3.jpg", "2020-0129-105040_020032_movie_t-2.jpg", "2020-0129-105040_020032_movie_t-1.jpg", "2020-0129-105040_020032_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the lane-changing SUV", "environment_perception": "The scene shows a multi-lane urban roadway with smooth pavement and moderate traffic moving in the same direction, with no visible median. A white SUV ahead-right shifts diagonally left from the ego lane into the lane on the left, ending up directly in front of the ego vehicle. Farther ahead, a small white hatchback in the left-adjacent lane keeps a steady straight path, while a box truck and a bus in the farther left lanes also continue forward, creating a slower stream of traffic.", "hazard_reasoning": "The key hazard is the white SUV merging left across the ego vehicle's path. Because it is moving into the lane ahead of the ego car, it could force the driver to slow down or react to keep a safe following distance."}
{"id": "train_09790", "split": "train", "clip_key": "titan_clip_748_000480_movie", "source": {"subset": "titan", "scenario": "clip_748", "frame": "000480"}, "frames": ["titan_clip_748_000480_movie_t-3.jpg", "titan_clip_748_000480_movie_t-2.jpg", "titan_clip_748_000480_movie_t-1.jpg", "titan_clip_748_000480_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the crane", "environment_perception": "This is a narrow urban roadway with smooth pavement and no median, where light traffic shares the space with many pedestrians. Cones and barriers run along both sides, and a construction zone on the left tightens the lane. An orange crane truck is parked on the left shoulder ahead as part of the work area, with its barriers pushing into the ego lane and leaving less room to pass. Several pedestrians are also moving along the middle of the road in both directions, which further restricts movement. Near the right curb close to the camera, two pedestrians are walking toward the vehicle and could drift into the lane. A blue no-parking sign is visible on the left, along with more cones marking the work site.", "hazard_reasoning": "The main hazard is the construction setup on the left, especially the parked orange crane truck in the work zone. Because the crane and surrounding cones narrow the available travel space and encroach on the lane, the driver needs to proceed carefully to avoid contact."}
{"id": "train_09791", "split": "train", "clip_key": "titan_clip_748_000480_movie", "source": {"subset": "titan", "scenario": "clip_748", "frame": "000480"}, "frames": ["titan_clip_748_000480_movie_t-3.jpg", "titan_clip_748_000480_movie_t-2.jpg", "titan_clip_748_000480_movie_t-1.jpg", "titan_clip_748_000480_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the crane", "environment_perception": "This is a narrow urban road with smooth pavement and no median, carrying light traffic but many pedestrians. Cones and barriers run along both sides, and a work zone on the left side reduces the usable roadway. An orange construction crane truck is parked on the left shoulder ahead, with its barriers extending into the ego lane and cutting down clearance. Several pedestrians are moving along the center of the lane in opposite directions, making the path tighter. Near the right edge close to the vehicle, two pedestrians are walking toward the camera beside the curb and could move into the lane. A blue no-parking sign is visible on the left, along with more cones marking the construction area.", "hazard_reasoning": "The main hazard is the orange crane truck parked on the left within the construction area. Because the work zone and cones intrude into the travel lane, the available space is limited and the driver needs to pass with care to avoid contact."}
{"id": "train_09792", "split": "train", "clip_key": "2020-0131-135401_080856_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "080856"}, "frames": ["2020-0131-135401_080856_movie_t-3.jpg", "2020-0131-135401_080856_movie_t-2.jpg", "2020-0131-135401_080856_movie_t-1.jpg", "2020-0131-135401_080856_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the white van", "environment_perception": "A dry elevated urban roadway with three lanes in the same direction is bordered by guardrails on both sides. Traffic is light to moderate and moving smoothly, with no oncoming traffic visible because the road is divided. A white van ahead in the left lane keeps a steady speed and drifts slightly toward the middle lane as the roadway opens up. A small white truck farther ahead in the center lane continues steadily and appears to be pacing that lane. Vehicles in the right lane pass gradually while maintaining space, and overhead gantries with a crossing elevated road are visible ahead.", "hazard_reasoning": "The main concern is the white van in the left lane, which is still moving forward and edging toward the center. Since the lane ahead is open, it may shift unexpectedly into the ego vehicle’s path. This creates a mild cut-in risk, so the driver should watch the van closely."}
{"id": "train_09793", "split": "train", "clip_key": "2020-0131-135401_080856_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "080856"}, "frames": ["2020-0131-135401_080856_movie_t-3.jpg", "2020-0131-135401_080856_movie_t-2.jpg", "2020-0131-135401_080856_movie_t-1.jpg", "2020-0131-135401_080856_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the white van", "environment_perception": "A dry elevated urban roadway with three lanes in the same direction is bordered by guardrails on both sides. Traffic is light to moderate and moving smoothly, with no opposing traffic visible because the road is divided. A white van ahead in the left lane keeps a steady speed and drifts a little toward the center lane, while a small white truck farther ahead in the center lane continues straight and seems to pace that lane. Vehicles in the right lane pass gradually with ample spacing, and overhead gantries plus another elevated crossing appear ahead without any visible signals.", "hazard_reasoning": "The main concern is the white van in the left lane continuing forward while edging toward the center. Since it may move into the ego lane without much warning, the driver should watch for a possible cut-in and stay alert around the van."}
{"id": "train_09794", "split": "train", "clip_key": "2020-0228-102841_026958_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "026958"}, "frames": ["2020-0228-102841_026958_movie_t-3.jpg", "2020-0228-102841_026958_movie_t-2.jpg", "2020-0228-102841_026958_movie_t-1.jpg", "2020-0228-102841_026958_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of merging van", "environment_perception": "A dry, smooth urban roadway with two lanes in each direction is separated by double solid lines, and traffic is moving steadily. Ahead on the left, a black van in the left lane starts moving rightward into the ego lane, crossing into our path. A small flatbed truck is traveling slowly in the curb lane along the left side, with several vehicles lined up behind it. Across the median, oncoming traffic, including a gray sports car in the nearest right lane, continues past without affecting us. A gantry overhead shows a 50 speed limit.", "hazard_reasoning": "The black van is merging from the left lane into the ego lane. Its movement into our lane reduces available space and creates a clear need to be cautious to avoid a collision."}
{"id": "train_09795", "split": "train", "clip_key": "titan_clip_90_000162_movie", "source": {"subset": "titan", "scenario": "clip_90", "frame": "000162"}, "frames": ["titan_clip_90_000162_movie_t-3.jpg", "titan_clip_90_000162_movie_t-2.jpg", "titan_clip_90_000162_movie_t-1.jpg", "titan_clip_90_000162_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "LOW", "warning_content": "be cautious of the cone ahead", "environment_perception": "The scene shows a busy-looking urban shopping street with tall buildings, a straight undivided road, and generally light traffic. Ahead, a black minivan slightly to the right is moving slowly near the curb by a zebra crossing, guiding the ego vehicle’s approach. A pedestrian in dark clothing is already crossing the crosswalk from right to left in front of the minivan and across the ego vehicle’s path, while another man stands waiting at the right curb next to the crossing, looking toward the road. A traffic cone sits on the left side of the roadway close to the crosswalk, marking the edge of the lane area.", "hazard_reasoning": "The most notable hazard is the traffic cone positioned on the left side of the road. It may interfere with the vehicle’s path, so it should be treated as a minor construction-related obstacle and approached carefully."}
{"id": "train_09796", "split": "train", "clip_key": "2020-0226-140503_044005_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "044005"}, "frames": ["2020-0226-140503_044005_movie_t-3.jpg", "2020-0226-140503_044005_movie_t-2.jpg", "2020-0226-140503_044005_movie_t-1.jpg", "2020-0226-140503_044005_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming white van.", "environment_perception": "The scene shows an urban multi-lane intersection on a two-way road with left-hand traffic, dry pavement, and clear lane markings, with moderate traffic. In the ego lane, a Coca-Cola box truck is moving through the intersection and slowing the ego vehicle's progress. On the right side, a white van is approaching in the oncoming lane and continuing across the ego vehicle's intended path. Farther right, a small van and a scooter are also moving slowly out from the side street behind it. A traffic light on the left is green for the ego vehicle.", "hazard_reasoning": "The main concern is the white van on the right, which is driving toward the ego vehicle in the oncoming lane. If the ego car continues without yielding, the van could intersect our path and create a collision risk."}
{"id": "train_09797", "split": "train", "clip_key": "2020-0127-132751_059770_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "059770"}, "frames": ["2020-0127-132751_059770_movie_t-3.jpg", "2020-0127-132751_059770_movie_t-2.jpg", "2020-0127-132751_059770_movie_t-1.jpg", "2020-0127-132751_059770_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be aware of the merging van", "environment_perception": "This is an urban multi-lane road with dry pavement and light to moderate traffic moving steadily. A silver hatchback ahead in the ego lane keeps going straight at a similar speed, effectively pacing the ego vehicle. To the left, a black van in the curbside lane begins drifting right into the ego lane, apparently due to a white van parked farther ahead in that lane. Several other parked vehicles along the left curb further reduce available space.", "hazard_reasoning": "The black van is moving from the left lane into the ego vehicle's lane, creating a lane-change merge risk. Since the van may enter the ego path without much notice, the driver should be ready to slow down and react."}
{"id": "train_09798", "split": "train", "clip_key": "2020-0131-135401_080856_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "080856"}, "frames": ["2020-0131-135401_080856_movie_t-3.jpg", "2020-0131-135401_080856_movie_t-2.jpg", "2020-0131-135401_080856_movie_t-1.jpg", "2020-0131-135401_080856_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the white van", "environment_perception": "The scene shows a dry, well-maintained urban elevated roadway with three lanes traveling in the same direction and guardrails on both sides. Traffic is light to moderate and flowing smoothly, with no opposing traffic visible because the road is divided. A white van ahead in the left lane keeps moving at a steady speed and appears to drift a little toward the center lane while the roadway ahead remains open. A small white truck is farther ahead in the center lane, moving steadily and effectively setting the flow there. Vehicles in the right lane pass gradually while maintaining spacing, and overhead gantries with a crossing elevated road can be seen, with no signal lights present.", "hazard_reasoning": "The main concern is the white van in the left lane, which is continuing forward and edging slightly inward as it approaches clearer space. If it shifts more than expected, it could move into the ego lane without much warning. That makes the van the primary object to watch, so the driver should stay alert for a possible cut-in."}
{"id": "train_09799", "split": "train", "clip_key": "2020-0213-143552_012491_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "012491"}, "frames": ["2020-0213-143552_012491_movie_t-3.jpg", "2020-0213-143552_012491_movie_t-2.jpg", "2020-0213-143552_012491_movie_t-1.jpg", "2020-0213-143552_012491_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to white van merging ahead", "environment_perception": "A light-traffic urban two-way road with one lane in each direction bends right into a signalized intersection, with smooth pavement and no median. From the left side of the junction, a white van moves across and merges into the ego lane, ending up directly ahead of the ego car. A second car also approaches from the same left side but remains behind the van and does not enter the ego vehicle’s path. Traffic lights are visible beyond the intersection, and hatched road markings channel the turn through the junction.", "hazard_reasoning": "The white van is crossing from the left and merging into the ego lane directly in front of the car. Since it is entering the ego vehicle’s path, this creates a possible collision risk, so the driver should yield and keep clear."}
{"id": "train_09800", "split": "train", "clip_key": "2020-0226-140503_044005_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "044005"}, "frames": ["2020-0226-140503_044005_movie_t-3.jpg", "2020-0226-140503_044005_movie_t-2.jpg", "2020-0226-140503_044005_movie_t-1.jpg", "2020-0226-140503_044005_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming white van.", "environment_perception": "An urban multi-lane intersection on a two-way road with left-hand traffic is visible, with dry, clearly marked lanes and moderate traffic. In front of the ego vehicle, a Coca-Cola box truck continues through the junction and slows the ego car’s progress. On the right side of the intersection, a white van is moving toward the ego vehicle in the opposing lane and continues across the ego’s line of travel. Farther right, a small van and a scooter are also creeping forward from the side street behind it. The signal on the left is green for the ego approach.", "hazard_reasoning": "The main concern is the white van approaching from the right in the oncoming lane. If the ego vehicle proceeds without yielding, the van could conflict with our path and create a collision risk."}
{"id": "train_09801", "split": "train", "clip_key": "2020-0213-143552_012491_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "012491"}, "frames": ["2020-0213-143552_012491_movie_t-3.jpg", "2020-0213-143552_012491_movie_t-2.jpg", "2020-0213-143552_012491_movie_t-1.jpg", "2020-0213-143552_012491_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to white van merging ahead", "environment_perception": "A light-traffic urban two-way street, with one lane in each direction, bends right toward a signal-controlled intersection. The roadway is smooth, there is no center median, and overhead signals are visible beyond the junction. At the intersection, a white van enters from the left and cuts across into the ego vehicle’s lane, ending up directly ahead. Another car also approaches from the same left side but remains behind the van and does not intrude into the ego path. Hatched pavement markings are painted through the turn area.", "hazard_reasoning": "The key risk is the white van, which is moving in from the left and merging into the lane the ego car is using. Because it takes position right in front of the ego vehicle, the driver needs to slow and yield to prevent a possible side/front conflict."}
{"id": "train_09802", "split": "train", "clip_key": "2020-0226-140503_044005_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "044005"}, "frames": ["2020-0226-140503_044005_movie_t-3.jpg", "2020-0226-140503_044005_movie_t-2.jpg", "2020-0226-140503_044005_movie_t-1.jpg", "2020-0226-140503_044005_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming white van.", "environment_perception": "A multi-lane urban intersection on a two-way road with left-hand traffic is visible, with dry pavement, clear lane markings, and moderate traffic. A Coca-Cola box truck is ahead in the ego lane, slowing the ego vehicle’s progress through the junction. On the right side, a white van is moving toward the ego car in the oncoming lane and continues across the ego path. Farther right, a small van and a scooter are also edging forward from the side street behind it. The signal on the left is green for the ego vehicle.", "hazard_reasoning": "The main concern is the white van on the right, which is approaching the ego vehicle from the oncoming direction. If the ego car continues without yielding, there is a possible collision risk as the van moves through the intersection."}
{"id": "train_09803", "split": "train", "clip_key": "2020-0129-144857_026912_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "026912"}, "frames": ["2020-0129-144857_026912_movie_t-3.jpg", "2020-0129-144857_026912_movie_t-2.jpg", "2020-0129-144857_026912_movie_t-1.jpg", "2020-0129-144857_026912_movie_t.jpg"], "hazard_type": "lane_change_merge", "severity_level": "MEDIUM", "warning_content": "Be cautious of the merging van.", "environment_perception": "This is a light-traffic urban multi-lane road beneath an elevated roadway, with curbs and a fence along the right side. A black van ahead and slightly left is moving out of the left lane into the ego lane, then continues straight, briefly closing the gap in front. A dark car farther ahead keeps traveling steadily in the same direction, and a box truck can be seen in the distance using the through lanes. Overhead signs indicate the left lane is for left turns, the two middle lanes go straight, and the right lane is for right turns.", "hazard_reasoning": "The main concern is the black van merging from the left lane into the ego lane directly ahead. That lane change reduces the available following distance and could require the ego vehicle to slow down to maintain a safe gap, so it presents a moderate collision risk and deserves caution."}
{"id": "train_09804", "split": "train", "clip_key": "2020-0218-103119_006645_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "006645"}, "frames": ["2020-0218-103119_006645_movie_t-3.jpg", "2020-0218-103119_006645_movie_t-2.jpg", "2020-0218-103119_006645_movie_t-1.jpg", "2020-0218-103119_006645_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "be cautious of green sedan accelerating ahead", "environment_perception": "This is a narrow urban residential road with a two-way layout, green shoulder markings, and no central divider. A green sedan is visible ahead near the left side of the ego lane, moving forward and accelerating. On the right, a white light truck is stopped in a driveway and slightly reduces the available space, though it is not in the driving path. Parked cars, a parking meter, buildings, and utility poles are close to the roadway.", "hazard_reasoning": "The main concern is the green sedan ahead on the left, which is accelerating in the ego lane. Because it is moving quickly, it may leave less time to react if its path changes, so the situation warrants caution."}
{"id": "train_09805", "split": "train", "clip_key": "2020-0225-102455_005242_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "005242"}, "frames": ["2020-0225-102455_005242_movie_t-3.jpg", "2020-0225-102455_005242_movie_t-2.jpg", "2020-0225-102455_005242_movie_t-1.jpg", "2020-0225-102455_005242_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "This is an urban two-lane roadway curving to the right, lined with mid-rise buildings, smooth asphalt, and a painted median with flexible posts. Traffic is light. In the ego lane ahead, a gray dump truck is reducing speed near the signalized intersection as it prepares to turn left, which affects the vehicle behind it. In the right adjacent lane, a white box truck is moving ahead through the bend and gradually pulling away. On the far right side beyond the divider, a large white truck is traveling in the opposite direction on a separate parallel road and is not in the ego path. Traffic lights overhead and railings with curb islands on the left mark the junction.", "hazard_reasoning": "The main hazard is the gray truck ahead, since it is slowing in the ego lane to make a left turn. This creates a need to reduce speed and keep a safe following gap while preparing for its turn."}
{"id": "train_09806", "split": "train", "clip_key": "2020-0218-103119_006645_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "006645"}, "frames": ["2020-0218-103119_006645_movie_t-3.jpg", "2020-0218-103119_006645_movie_t-2.jpg", "2020-0218-103119_006645_movie_t-1.jpg", "2020-0218-103119_006645_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "be cautious of green sedan accelerating ahead", "environment_perception": "This is a narrow two-way residential street with green advisory shoulders, smooth asphalt, and light traffic, with no center divider. A green sedan is ahead near the left side in the ego lane and is moving forward with acceleration. On the right edge, a white light truck is stopped in a driveway, narrowing the passage slightly but not entering the ego path. Parked cars and a parking machine line the left side, while nearby buildings and utility poles tightly border the road.", "hazard_reasoning": "The main concern is the green sedan ahead on the left side, since it is accelerating while remaining in the ego lane. That faster motion may leave less time to react and could lead to an unexpected lane movement, so it should be monitored closely."}
{"id": "train_09807", "split": "train", "clip_key": "2020-0218-103119_006645_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "006645"}, "frames": ["2020-0218-103119_006645_movie_t-3.jpg", "2020-0218-103119_006645_movie_t-2.jpg", "2020-0218-103119_006645_movie_t-1.jpg", "2020-0218-103119_006645_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "be cautious of green sedan accelerating ahead", "environment_perception": "This is a narrow urban residential road with a two-way layout, green shoulder markings, and no center divider. The pavement is clear and traffic is light. A green sedan is positioned ahead near the left side of the ego lane and is moving forward. On the right, a white light truck is stopped in a driveway, slightly constricting the available space but not entering the driving line. Parked cars and a parking meter line the left side, with buildings and utility poles close to the roadway.", "hazard_reasoning": "The main concern is the green sedan ahead on the left, which is accelerating straight in the ego lane. Because it is gaining speed in front of the driver, it could leave less time to react or change position unexpectedly. This creates a low-level hazard, so the driver should remain attentive."}
{"id": "train_09808", "split": "train", "clip_key": "2020-0205-152530_055154_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "055154"}, "frames": ["2020-0205-152530_055154_movie_t-3.jpg", "2020-0205-152530_055154_movie_t-2.jpg", "2020-0205-152530_055154_movie_t-1.jpg", "2020-0205-152530_055154_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of its upcoming lane change", "environment_perception": "The scene shows a dry urban three-lane one-way roadway passing under elevated expressways, with a curb and railing on the left and a fence on the right. Traffic is moving steadily. Directly ahead in the ego lane, a white sedan is traveling forward while its left turn signal flashes. In the right lane ahead, a white minivan continues straight and slowly gains distance without edging into the ego lane. Farther ahead on the right, a box truck remains in its lane with no notable movement toward nearby vehicles.", "hazard_reasoning": "The main concern is the white sedan ahead in the ego lane with its left indicator on. Since it may shift or merge into the lane, it represents a potential upcoming lane-change hazard, so the driver should stay alert and prepare for its movement."}
{"id": "train_09809", "split": "train", "clip_key": "2020-0225-102455_005242_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "005242"}, "frames": ["2020-0225-102455_005242_movie_t-3.jpg", "2020-0225-102455_005242_movie_t-2.jpg", "2020-0225-102455_005242_movie_t-1.jpg", "2020-0225-102455_005242_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "The scene shows a lightly trafficked urban two-lane road curving to the right past mid-rise buildings, with smooth asphalt and a painted median marked by flexible posts. In the ego lane ahead, a gray dump truck is reducing speed to make a left turn at the signalized intersection, limiting the ego vehicle’s progress. A white box truck in the adjacent right lane is slightly ahead and continues through the bend, moving away. On the far right beyond the divider, a large white truck is traveling in the opposite direction on a separate roadway, so it is not part of the immediate lane. Traffic lights overhead and railings with curb islands on the left define the junction.", "hazard_reasoning": "The main hazard is the gray dump truck ahead, since it is slowing in the ego lane while preparing for a left turn. This creates a need to reduce speed and keep a safe following distance so there is room for its turn."}
{"id": "train_09810", "split": "train", "clip_key": "2020-0225-102455_005242_movie", "source": {"subset": "drama", "scenario": "2020-0225-102455", "frame": "005242"}, "frames": ["2020-0225-102455_005242_movie_t-3.jpg", "2020-0225-102455_005242_movie_t-2.jpg", "2020-0225-102455_005242_movie_t-1.jpg", "2020-0225-102455_005242_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "This is an urban two-lane roadway for the same direction, bending right beside mid-rise buildings, with smooth pavement and a painted median lined with flexible posts; traffic appears light. In the ego lane ahead, a gray dump truck is slowing for a left turn at a signalized intersection, which is reducing the ego vehicle’s pace. In the neighboring right lane slightly ahead, a white box truck keeps moving forward through the curve and gradually opens the gap. Beyond the divider on the far right, a large white truck is traveling in the opposite direction on a separate roadway and is not part of the immediate lane. Overhead signals, along with left-side railings and curb islands, define the junction.", "hazard_reasoning": "The main concern is the gray truck ahead in the ego lane, since it is slowing to make a left turn. The ego vehicle should reduce speed, keep a safe following distance, and be ready for that turn."}
{"id": "train_09811", "split": "train", "clip_key": "2020-0205-152530_055154_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "055154"}, "frames": ["2020-0205-152530_055154_movie_t-3.jpg", "2020-0205-152530_055154_movie_t-2.jpg", "2020-0205-152530_055154_movie_t-1.jpg", "2020-0205-152530_055154_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of its upcoming lane change", "environment_perception": "This is an urban one-way road with three lanes running under elevated expressways, with a curb and railing along the left side and a fence on the right. The pavement is dry and clear, and traffic appears to be moving at a steady, moderate pace. Directly ahead in the ego lane, a white sedan is showing a left turn signal while still continuing forward, keeping to the ego vehicle’s path. In the right lane ahead, a white minivan moves straight and slowly gains distance without edging into the ego lane. Farther ahead on the right, a box truck continues in its lane and stays separated from nearby vehicles. No other notable hazards stand out.", "hazard_reasoning": "The main concern is the white sedan ahead in the ego lane with its left turn signal flashing. That signal suggests it may change lanes into the ego path, so the driver should stay alert and prepare for a possible merge."}
{"id": "train_09812", "split": "train", "clip_key": "2020-0205-152530_055154_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "055154"}, "frames": ["2020-0205-152530_055154_movie_t-3.jpg", "2020-0205-152530_055154_movie_t-2.jpg", "2020-0205-152530_055154_movie_t-1.jpg", "2020-0205-152530_055154_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of its upcoming lane change", "environment_perception": "This is a three-lane one-way urban road under elevated expressways, with a curb and railing on the left and a fence on the right. The road surface is dry and clear, and traffic is moving at a steady moderate pace. Directly ahead in the ego lane, a white sedan is traveling forward while its left turn signal flashes. In the right lane slightly ahead, a white minivan continues straight and slowly increases the gap without edging toward the ego lane. Farther ahead on the right, a box truck is also moving steadily in its lane. No other obvious hazards stand out.", "hazard_reasoning": "The main concern is the white sedan ahead in the ego lane with a flashing left indicator. That signal suggests it may change lanes, so it should be watched closely as a possible merge into the ego vehicle's path."}
{"id": "train_09813", "split": "train", "clip_key": "2020-0127-132751_037523_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "037523"}, "frames": ["2020-0127-132751_037523_movie_t-3.jpg", "2020-0127-132751_037523_movie_t-2.jpg", "2020-0127-132751_037523_movie_t-1.jpg", "2020-0127-132751_037523_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the black hatchback", "environment_perception": "A city multi-lane road with fresh asphalt and a bollard-lined median on the right leads into a signalized intersection. In the ego lane, a black hatchback ahead approaches the crosswalk and slows as traffic queues up, effectively guiding the ego vehicle’s speed. A white box truck slightly ahead in the left lane continues forward and also eases down near the stop line, moving alongside the ego path. Several vehicles on the right are traveling in the opposite direction beyond the median and do not affect the ego lane. A pedestrian is standing on the far-side sidewalk near the corner.", "hazard_reasoning": "The main concern is the black hatchback directly ahead in the ego lane. It may decelerate further or shift position unexpectedly, so it should be watched closely to avoid a sudden slowdown or possible cut-in."}
{"id": "train_09814", "split": "train", "clip_key": "2020-0207-101955_001580_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "001580"}, "frames": ["2020-0207-101955_001580_movie_t-3.jpg", "2020-0207-101955_001580_movie_t-2.jpg", "2020-0207-101955_001580_movie_t-1.jpg", "2020-0207-101955_001580_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a divided urban roadway with a planted median and a smooth approach to a signalized intersection. Traffic is sparse, with opposing lanes beyond the median on the right. A black minivan ahead in the ego lane moves forward and then makes a right turn at the intersection, pulling away from the ego vehicle while briefly setting the pace. Farther ahead-left, a large white box truck finishes a left turn through the junction and clears the path. Several pedestrians wait on the right sidewalk and near the far crosswalk without stepping into the road. Guardrails and a no-parking sign appear along the left edge.", "hazard_reasoning": "The main hazard is the black minivan ahead, which is turning right away from the ego vehicle while still in the lane ahead. This turning movement suggests it may merge into the ego path in front, so the safe response is to continue behind it and keep a proper following gap to avoid a collision."}
{"id": "train_09815", "split": "train", "clip_key": "2020-0127-132751_037523_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "037523"}, "frames": ["2020-0127-132751_037523_movie_t-3.jpg", "2020-0127-132751_037523_movie_t-2.jpg", "2020-0127-132751_037523_movie_t-1.jpg", "2020-0127-132751_037523_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the black hatchback", "environment_perception": "A multi-lane urban arterial with a fresh roadway and a bollard-divided median on the right approaches a signalized intersection with moderate traffic. A black hatchback ahead in the ego lane is moving toward the crosswalk and slowing as the queue builds, effectively pacing the ego vehicle. In the adjacent left lane, a white box truck is slightly ahead, continuing straight while also easing down near the stop line. Several oncoming vehicles pass through their lanes on the right side of the median, separate from the ego path. A pedestrian is standing on the far-side sidewalk near the corner.", "hazard_reasoning": "The black hatchback in the ego lane is the main vehicle to watch. It may slow abruptly or drift for a lane change, so it presents a potential cut-in or sudden-deceleration risk that warrants caution."}
{"id": "train_09816", "split": "train", "clip_key": "2020-0206-142535_014419_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "014419"}, "frames": ["2020-0206-142535_014419_movie_t-3.jpg", "2020-0206-142535_014419_movie_t-2.jpg", "2020-0206-142535_014419_movie_t-1.jpg", "2020-0206-142535_014419_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning vehicle.", "environment_perception": "A broad signalized urban intersection lies ahead on a smooth roadway, with the ego vehicle stopped in the left lane of a two-way street while cross traffic is present. A black sedan is centered in the junction and turns right across the ego vehicle’s forward path into the oncoming lanes on the ego’s right, momentarily blocking part of the intersection. A silver SUV farther ahead also travels left to right through the crossing area, finishing its right turn and moving away. Several pedestrians remain waiting at the distant corners near the crosswalks and do not enter the roadway. The traffic lights are not clearly visible.", "hazard_reasoning": "The main concern is the black sedan ahead, which is turning right into the oncoming lane on the right side of the ego vehicle. Because it is occupying the intersection and moving across the ego’s path, it could interfere with the ego vehicle’s movement and create a collision risk. The situation calls for caution, but the threat appears limited."}
{"id": "train_09817", "split": "train", "clip_key": "2020-0207-101955_001580_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "001580"}, "frames": ["2020-0207-101955_001580_movie_t-3.jpg", "2020-0207-101955_001580_movie_t-2.jpg", "2020-0207-101955_001580_movie_t-1.jpg", "2020-0207-101955_001580_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows an urban divided roadway with a shrub median and smooth pavement leading into a signalized intersection. Traffic is sparse, and the opposite-direction lanes lie beyond the median on the right. A black minivan ahead in the ego lane keeps moving forward and then turns right at the intersection, pulling away from the ego vehicle and briefly setting the pace. Farther ahead-left, a large white box truck finishes a left turn through the junction and clears the roadway. Pedestrians remain on the right sidewalk and near the far crosswalk, waiting rather than stepping into the road. A no-parking sign and guardrails are visible along the left side.", "hazard_reasoning": "The main concern is the black minivan ahead, which is turning right while still in the ego lane. That movement suggests it will merge ahead of you, so the safe response is to keep following the vehicle in front and leave enough space to avoid a collision."}
{"id": "train_09818", "split": "train", "clip_key": "2020-0206-142535_014419_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "014419"}, "frames": ["2020-0206-142535_014419_movie_t-3.jpg", "2020-0206-142535_014419_movie_t-2.jpg", "2020-0206-142535_014419_movie_t-1.jpg", "2020-0206-142535_014419_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning vehicle.", "environment_perception": "The scene shows a broad signalized city intersection with clear pavement, while the ego vehicle is stopped in the left lane of a two-way road as cross traffic moves through. A black sedan is centered in the intersection, turning right across the ego vehicle’s forward path toward the lanes on the right side, temporarily narrowing the space ahead. A silver SUV farther ahead is also crossing left to right and finishing its right turn. A few pedestrians remain waiting at the far corners by the crosswalks and do not enter the roadway. The traffic lights cannot be clearly seen.", "hazard_reasoning": "The main concern is the black sedan ahead, which is turning right into the oncoming lane area on the ego vehicle’s right. Because it is occupying the intersection and moving across the ego path, it could interfere with the ego vehicle’s route and create a collision risk."}
{"id": "train_09819", "split": "train", "clip_key": "2020-0207-101955_001580_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "001580"}, "frames": ["2020-0207-101955_001580_movie_t-3.jpg", "2020-0207-101955_001580_movie_t-2.jpg", "2020-0207-101955_001580_movie_t-1.jpg", "2020-0207-101955_001580_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a divided urban roadway with a shrub-filled median and clean pavement leading up to a signalized intersection. Traffic is sparse, and the opposing lanes are visible to the right beyond the median. A black minivan ahead in the ego lane keeps moving forward and then makes a right turn at the intersection, pulling away from the ego vehicle and briefly setting the pace. Farther ahead on the left, a large white box truck finishes a left turn through the junction and clears the path. On the right sidewalk and near the distant crosswalk, pedestrians remain waiting and do not step into the road. Guardrails and a no-parking sign appear along the left edge.", "hazard_reasoning": "The main concern is the black minivan ahead, which is in the ego lane and is turning right away from the car. This indicates it will be part of the forward traffic flow ahead, so the safe response is to keep following at a cautious distance to avoid a collision."}
{"id": "train_09820", "split": "train", "clip_key": "2020-0213-143552_075383_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "075383"}, "frames": ["2020-0213-143552_075383_movie_t-3.jpg", "2020-0213-143552_075383_movie_t-2.jpg", "2020-0213-143552_075383_movie_t-1.jpg", "2020-0213-143552_075383_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning truck", "environment_perception": "This is an urban three-lane arterial with smooth road surface and barriers along the sides. The ego vehicle is following a blue crane truck in the center lane, and that truck is slowing to make a right turn under a green arrow. A silver hatchback in the left lane is slightly ahead and continues straight without drifting toward the ego lane. On the far right, beyond a striped gore area, a large white box truck is stopped in a side bay with a smaller flatbed in front of it, but these vehicles are off the travel lanes. Traffic signals are visible ahead at the junction.", "hazard_reasoning": "The blue truck ahead is the main concern because it is turning right on the green arrow. Its movement could reduce visibility and place it into or near the ego vehicle's path, so the driver should stay alert to the turning truck."}
{"id": "train_09821", "split": "train", "clip_key": "2020-0226-101332_057368_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "057368"}, "frames": ["2020-0226-101332_057368_movie_t-3.jpg", "2020-0226-101332_057368_movie_t-2.jpg", "2020-0226-101332_057368_movie_t-1.jpg", "2020-0226-101332_057368_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to merging vehicle", "environment_perception": "The scene shows a dry, well-kept urban multi-lane arterial leading into a large signalized intersection with painted lane guidance and no physical median. Traffic is moderate. A black taxi-like minivan at the front-right is completing a right turn across the junction ahead of the ego vehicle, narrowing the available path. In the opposing right lane, a gray sedan is traveling toward the ego car. Ahead in the ego direction, several light vans and cars continue straight in a steady line through the intersection. Blue overhead signs mark the left-turn, straight-ahead, and right-turn lanes.", "hazard_reasoning": "The main concern is the gray sedan coming toward the ego vehicle in the right lane. If it moves unexpectedly toward the ego path, it could create a collision risk, so the ego vehicle should be ready to yield."}
{"id": "train_09822", "split": "train", "clip_key": "2020-0213-143552_075383_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "075383"}, "frames": ["2020-0213-143552_075383_movie_t-3.jpg", "2020-0213-143552_075383_movie_t-2.jpg", "2020-0213-143552_075383_movie_t-1.jpg", "2020-0213-143552_075383_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning truck", "environment_perception": "The scene shows an urban three-lane roadway with smooth pavement and barriers along the sides. The ego vehicle is following a blue crane truck ahead in the center lane, and that truck is slowing to make a right turn under a green arrow. A silver hatchback is slightly ahead in the left lane and continues straight without drifting toward the ego lane. On the far right, past a striped gore area, a white box truck is stopped in a side bay with a smaller flatbed in front of it, so it is present roadside but not obstructing travel. Traffic signals and an upcoming junction are visible ahead.", "hazard_reasoning": "The main hazard is the blue truck ahead, which is turning right at the intersection. Its turning movement could reduce visibility and affect the ego vehicle’s path, so the driver should stay alert to the truck’s motion."}
{"id": "train_09823", "split": "train", "clip_key": "2020-0226-101332_057368_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "057368"}, "frames": ["2020-0226-101332_057368_movie_t-3.jpg", "2020-0226-101332_057368_movie_t-2.jpg", "2020-0226-101332_057368_movie_t-1.jpg", "2020-0226-101332_057368_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to merging vehicle", "environment_perception": "The scene shows a multi-lane urban arterial leading into a large signalized intersection with painted lane guidance and no physical median. The road surface is dry, and traffic is moving at a moderate pace. A black taxi-like minivan ahead on the right is turning right across the intersection in front of the ego vehicle, temporarily limiting its path. In the opposing right lane, a gray sedan is coming toward the ego car. Farther ahead in the ego direction, several vans and cars continue straight in a steady flow. Blue overhead lane signs mark left-turn, straight, and right-turn lanes.", "hazard_reasoning": "The gray sedan in the oncoming right lane is the main concern because it is moving toward the ego vehicle. If it shifts unexpectedly toward the ego path, a collision could occur, so the driver should be ready to yield."}
{"id": "train_09824", "split": "train", "clip_key": "2020-0226-101332_057368_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "057368"}, "frames": ["2020-0226-101332_057368_movie_t-3.jpg", "2020-0226-101332_057368_movie_t-2.jpg", "2020-0226-101332_057368_movie_t-1.jpg", "2020-0226-101332_057368_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to merging vehicle", "environment_perception": "The scene shows an urban multi-lane road entering a signalized intersection with painted channel markings and no physical median. The pavement is dry, traffic is moderate, and a black taxi-like minivan on the front right is turning right across the intersection ahead of the ego vehicle, narrowing the available path. A gray sedan is coming toward the ego car in the oncoming right lane, while several light vans and cars in the ego direction continue straight in a steady flow. Blue overhead signs indicate left-turn, straight, and right-turn lanes.", "hazard_reasoning": "The main concern is the gray sedan approaching from the oncoming right lane. If it shifts unexpectedly toward the ego vehicle’s path, it could create a collision risk, so the ego driver should be prepared to yield."}
{"id": "train_09825", "split": "train", "clip_key": "2020-0228-102841_068415_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "068415"}, "frames": ["2020-0228-102841_068415_movie_t-3.jpg", "2020-0228-102841_068415_movie_t-2.jpg", "2020-0228-102841_068415_movie_t-1.jpg", "2020-0228-102841_068415_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The ego vehicle is approaching a signalized urban intersection on a two-lane road without a median, with red-marked pavement and several vehicles waiting near the stop line. A white sedan just ahead in the ego lane by the left curb is rolling slowly with its left turn signal active, and it appears to be preparing to turn left. A blue hatchback in the adjacent right lane is also stopped near the line and stays in its lane. Pedestrians are visible on both sidewalks near the crosswalks, and there is an overhead traffic light plus a no-parking sign on the left.", "hazard_reasoning": "The main hazard is the white sedan ahead, since it is signaling a left turn while moving in front of the ego vehicle. Its turning intent could cause it to slow down or shift position unexpectedly, so the safest response is to keep following it with proper spacing."}
{"id": "train_09826", "split": "train", "clip_key": "2020-0228-102841_068415_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "068415"}, "frames": ["2020-0228-102841_068415_movie_t-3.jpg", "2020-0228-102841_068415_movie_t-2.jpg", "2020-0228-102841_068415_movie_t-1.jpg", "2020-0228-102841_068415_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The view shows an urban signalized intersection ahead on a two-lane road without a median, with smooth red pavement and a small line of traffic waiting at the stop line. A white sedan directly in front in the ego lane, close to the left curb, is moving slowly with its left turn signal on and appears to be preparing for a left turn, influencing the ego vehicle's speed. In the adjacent right lane, a blue hatchback is slightly ahead and stationary at the line, staying within its lane. Pedestrians are visible on both sidewalks near the crosswalk areas, and an overhead traffic light controls the intersection; a no-parking sign is posted on the left.", "hazard_reasoning": "The main concern is the white sedan ahead, which is signaling a left turn while traveling forward near the intersection. Because it may slow down or maneuver unexpectedly, it creates a small but relevant risk for the ego vehicle. The safest response is to keep a steady gap and follow the vehicle ahead."}
{"id": "train_09827", "split": "train", "clip_key": "2020-0131-135401_030223_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030223"}, "frames": ["2020-0131-135401_030223_movie_t-3.jpg", "2020-0131-135401_030223_movie_t-2.jpg", "2020-0131-135401_030223_movie_t-1.jpg", "2020-0131-135401_030223_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming truck.", "environment_perception": "The ego vehicle is approaching a signalized urban two-way intersection on worn pavement, with moderate traffic and a green light ahead. A white truck is visible from the right side of the junction, moving across and toward the ego path as it passes through the intersection. Farther back, a small white car is also coming straight in the opposing lane, while a silver hatchback waits near the right curb on the side street, ready to join once there is a gap.", "hazard_reasoning": "The main concern is the white truck entering from the right and moving toward the ego vehicle’s path. If the ego car continues without giving way, the truck could conflict with its trajectory and create a collision risk."}
{"id": "train_09828", "split": "train", "clip_key": "2020-0228-102841_068415_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "068415"}, "frames": ["2020-0228-102841_068415_movie_t-3.jpg", "2020-0228-102841_068415_movie_t-2.jpg", "2020-0228-102841_068415_movie_t-1.jpg", "2020-0228-102841_068415_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The road scene shows a signal-controlled urban intersection on a two-lane street without a median, with red pavement markings and a small queue of vehicles near the stop line. A white sedan just ahead in the ego lane, close to the left curb, is moving slowly with its left turn signal on, and it is influencing the ego vehicle's speed. A blue hatchback sits a little ahead in the neighboring right lane, staying in place at the line. Pedestrians are visible on both sidewalks near the crosswalk areas, while an overhead traffic light governs the junction and a no-parking sign appears on the left.", "hazard_reasoning": "The main concern is the white sedan ahead, which is positioned in the ego lane and signaling a left turn. Because it is preparing to turn, its motion may slow down or become less predictable, creating a need to keep a safe gap and follow cautiously behind it."}
{"id": "train_09829", "split": "train", "clip_key": "2020-0131-135401_030223_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030223"}, "frames": ["2020-0131-135401_030223_movie_t-3.jpg", "2020-0131-135401_030223_movie_t-2.jpg", "2020-0131-135401_030223_movie_t-1.jpg", "2020-0131-135401_030223_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming truck.", "environment_perception": "The ego vehicle is approaching a signal-controlled urban two-way intersection on slightly worn pavement, with moderate traffic and a green light ahead. A white truck is entering from the right side of the junction and moving toward the ego vehicle, crossing through the intersection in a way that could put it into the ego lane. A small white car follows behind in the oncoming lane, continuing straight, while a silver hatchback sits at the right curb of the side street waiting for a chance to merge.", "hazard_reasoning": "The main concern is the white truck approaching from the right side of the intersection toward the ego car. If the ego vehicle continues without yielding, the truck’s path could overlap with ours and create a collision risk."}
{"id": "train_09830", "split": "train", "clip_key": "2020-0218-151547_007522_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "007522"}, "frames": ["2020-0218-151547_007522_movie_t-3.jpg", "2020-0218-151547_007522_movie_t-2.jpg", "2020-0218-151547_007522_movie_t-1.jpg", "2020-0218-151547_007522_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "The scene shows a broad urban, signalized intersection on a smooth roadway without a median, with moderate traffic moving through. An orange bus is ahead and slightly to the right, turning across the ego vehicle toward the left side of the junction and momentarily cutting across the forward path. Several cars on the right continue straight through the intersection at a steady pace, passing around the bus. A vehicle is waiting near the left curb by the crosswalk, but it stays out of the ego lane. Tall buildings and the traffic lights frame the intersection.", "hazard_reasoning": "The main hazard is the orange bus turning across in front of the ego vehicle toward the left. Because it moves into the ego car’s path, there is a potential collision risk unless the driver yields. The safe response is to stop and let the bus finish its turn."}
{"id": "train_09831", "split": "train", "clip_key": "2020-0206-142535_014419_movie", "source": {"subset": "drama", "scenario": "2020-0206-142535", "frame": "014419"}, "frames": ["2020-0206-142535_014419_movie_t-3.jpg", "2020-0206-142535_014419_movie_t-2.jpg", "2020-0206-142535_014419_movie_t-1.jpg", "2020-0206-142535_014419_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning vehicle.", "environment_perception": "The scene shows a broad urban signalized intersection with clear pavement, while the ego vehicle is positioned in the left lane of a two-way road and is waiting amid moderate cross traffic. A black sedan is in the center of the junction, turning right across the ego vehicle’s path into the oncoming lanes on the right side, temporarily taking up space in the intersection and limiting the ego vehicle’s movement. Farther ahead, a silver SUV also travels left to right through the intersection, finishing a right turn and moving out of the way. Several pedestrians remain at the far corners near the crosswalks, standing on the curb and not entering the roadway. The traffic lights are not clearly visible.", "hazard_reasoning": "The black sedan ahead is the main concern because it is turning right into the oncoming lane to the right of the ego vehicle. This maneuver could intrude into the ego vehicle’s path, so the driver should stay alert for a possible collision."}
{"id": "train_09832", "split": "train", "clip_key": "2020-0129-105040_058012_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "058012"}, "frames": ["2020-0129-105040_058012_movie_t-3.jpg", "2020-0129-105040_058012_movie_t-2.jpg", "2020-0129-105040_058012_movie_t-1.jpg", "2020-0129-105040_058012_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the approaching black van.", "environment_perception": "This is an urban residential two-way road with one narrow lane in each direction and no median ahead. The pavement is mostly clear, with small speed cushions and chevron markings, and traffic is sparse. On the left side, a cyclist is moving in the same direction behind green bollards, near the ego vehicle’s lane, and could merge back onto the roadway where the posts end. A black van is coming toward the ego car in the opposite lane, narrowing the usable space as it approaches. A pedestrian is also walking along the left sidewalk beside the fence, and a triangular school-zone sign stands ahead.", "hazard_reasoning": "The main concern is the black van approaching in the oncoming lane. Because it is closing in on a narrow road, it could reduce clearance and, if it drifts near the curve, increase the chance of conflict with the ego vehicle. The safest assessment is to stay alert and watch the van’s position, but the risk is still limited."}
{"id": "train_09833", "split": "train", "clip_key": "2020-0213-143552_075383_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "075383"}, "frames": ["2020-0213-143552_075383_movie_t-3.jpg", "2020-0213-143552_075383_movie_t-2.jpg", "2020-0213-143552_075383_movie_t-1.jpg", "2020-0213-143552_075383_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the turning truck", "environment_perception": "This is an urban multi-lane arterial with smooth roadway and barriers along the sides, and traffic is moving at a moderate speed. The ego vehicle is following a blue crane truck ahead in the center lane, and that truck is slowing as it prepares to turn right at a green arrow. A silver hatchback in the left lane is slightly ahead and continues straight without drifting into the ego lane. On the far right, beyond a striped gore, a white box truck is stopped in a side bay with a smaller flatbed in front of it, so it is roadside but not obstructing travel lanes. Distant signals indicate an upcoming junction.", "hazard_reasoning": "The blue truck ahead is the main concern because it is executing a right turn under the green arrow. Its turning movement can reduce forward visibility and may place it across or near the ego vehicle’s path, so the driver should watch the turning truck carefully."}
{"id": "train_09834", "split": "train", "clip_key": "2020-0218-151547_007522_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "007522"}, "frames": ["2020-0218-151547_007522_movie_t-3.jpg", "2020-0218-151547_007522_movie_t-2.jpg", "2020-0218-151547_007522_movie_t-1.jpg", "2020-0218-151547_007522_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "The scene shows a wide signalized urban intersection on a multi-lane road with smooth pavement and no median, under moderate traffic. An orange bus ahead and slightly to the right is turning across the ego vehicle toward the left side of the intersection, moving in front and momentarily obstructing the lane. Several same-direction cars on the right keep going straight through the junction at a steady speed, passing alongside the bus. A car is waiting at the left curb near the crosswalk but stays out of the ego lane. Overhead signals and tall city buildings surround the intersection.", "hazard_reasoning": "The key hazard is the orange bus turning across the ego vehicle’s path. Because it moves in front of the car and encroaches on the intended route, there is a potential collision risk if the driver continues without yielding. The safest response is to stop and let the bus finish its turn."}
{"id": "train_09835", "split": "train", "clip_key": "2020-0129-105040_058012_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "058012"}, "frames": ["2020-0129-105040_058012_movie_t-3.jpg", "2020-0129-105040_058012_movie_t-2.jpg", "2020-0129-105040_058012_movie_t-1.jpg", "2020-0129-105040_058012_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the approaching black van.", "environment_perception": "This is a quiet urban residential two-way road with one narrow lane in each direction and no median ahead. The pavement is generally smooth, with small speed cushions and chevron markings, and traffic is sparse. On the left side, a cyclist is moving forward behind green bollards near the ego lane and could merge back onto the road where the bollards end. A black van is coming toward the ego vehicle in the opposite lane on the right, which narrows the usable space as it gets closer. A pedestrian is also visible walking along the left sidewalk by the fence, and a triangular school-zone sign stands ahead.", "hazard_reasoning": "The main concern is the black van traveling toward the ego car in the opposing lane. Because the road is narrow, the van could reduce the available clearance and slightly increase the chance of conflict if it drifts toward the ego lane around the bend. This creates a low-level oncoming-vehicle risk, so the driver should stay attentive and watch the van’s position."}
{"id": "train_09836", "split": "train", "clip_key": "2020-0131-135401_042597_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "042597"}, "frames": ["2020-0131-135401_042597_movie_t-3.jpg", "2020-0131-135401_042597_movie_t-2.jpg", "2020-0131-135401_042597_movie_t-1.jpg", "2020-0131-135401_042597_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of turning van", "environment_perception": "The scene shows an urban two-way road expanding into three lanes in the same direction at a signalized intersection, with smooth pavement and moderate traffic. A red van ahead-left is positioned along the left side of the lane and is turning left through the intersection, briefly narrowing the available space. In front of the ego vehicle, a white car in the center lane proceeds straight across the crosswalk and appears to be setting the traffic flow. Ahead-right, a silver minivan advances slowly in its lane near the junction, preparing for a right turn without cutting into the ego path. A few pedestrians are waiting on the right corner near the crosswalk and storefronts.", "hazard_reasoning": "The main concern is the red van turning left from the left side of the lane. Its turning movement could interfere with nearby traffic, so it should be watched closely to avoid any possible conflict."}
{"id": "train_09837", "split": "train", "clip_key": "2020-0129-105040_058012_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "058012"}, "frames": ["2020-0129-105040_058012_movie_t-3.jpg", "2020-0129-105040_058012_movie_t-2.jpg", "2020-0129-105040_058012_movie_t-1.jpg", "2020-0129-105040_058012_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be cautious of the approaching black van.", "environment_perception": "The scene shows an urban residential two-way road with one narrow lane in each direction and no center divider. The pavement is mostly clear, with small speed cushions and chevron markings, and overall traffic is light. A cyclist is visible ahead on the left side behind green bollards, traveling in the same direction near the ego lane and possibly rejoining the roadway where the barriers end. In the opposite lane, a black van is coming toward the ego vehicle, narrowing the usable space as it approaches. A pedestrian is also walking on the left sidewalk beside the fence, and a triangular school-zone warning sign appears ahead.", "hazard_reasoning": "The main concern is the black van traveling toward the ego car in the opposing lane. Because the road is narrow, the van could reduce clearance or drift closer around the curve, which leaves less time to react and raises the chance of conflict. This makes the oncoming van the most relevant hazard, so the driver should stay attentive to its position."}
{"id": "train_09838", "split": "train", "clip_key": "2020-0218-151547_007522_movie", "source": {"subset": "drama", "scenario": "2020-0218-151547", "frame": "007522"}, "frames": ["2020-0218-151547_007522_movie_t-3.jpg", "2020-0218-151547_007522_movie_t-2.jpg", "2020-0218-151547_007522_movie_t-1.jpg", "2020-0218-151547_007522_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "The scene shows an urban multi-lane arterial approaching a broad signalized intersection with smooth pavement and no median, under moderate traffic. Slightly ahead on the right, an orange bus is turning across the ego vehicle’s route toward the left side of the intersection, moving in front and momentarily obstructing the lane. Several cars on the right continue straight through the junction at a steady pace, while a car waits near the left curb by the crosswalk but stays out of the ego lane. Traffic lights and tall city buildings are visible around the intersection.", "hazard_reasoning": "The main hazard is the orange bus turning across the ego vehicle’s path toward the left. Because it cuts in front and intrudes into the driving line, it creates a potential collision risk if the car proceeds without caution. The safest response is to stop and let the bus finish its turn."}
{"id": "train_09839", "split": "train", "clip_key": "2020-0131-135401_030301_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030301"}, "frames": ["2020-0131-135401_030301_movie_t-3.jpg", "2020-0131-135401_030301_movie_t-2.jpg", "2020-0131-135401_030301_movie_t-1.jpg", "2020-0131-135401_030301_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the black sedan approaching in the intersection", "environment_perception": "This is a two-way urban street with a single lane in each direction, lined by midrise buildings and a clear roadway surface, as moderate traffic moves through a signal-controlled intersection. A black sedan is ahead in the intersection traveling toward the ego vehicle in the opposing lane. On the right side, a white flatbed truck is close to the curb beside the ego lane and appears to be creeping forward, so it could drift into the lane. Beyond the crosswalk, a white box truck is moving slowly in the ego lane and is setting the flow for same-direction traffic. The signal for the ego direction is green.", "hazard_reasoning": "The main concern is the black sedan in the intersection coming toward the ego vehicle. Because it is directly ahead in the opposing lane and could conflict with the ego path, it presents the most relevant hazard, so yielding is the safest response to avoid a collision."}
{"id": "train_09840", "split": "train", "clip_key": "2020-0131-135401_042597_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "042597"}, "frames": ["2020-0131-135401_042597_movie_t-3.jpg", "2020-0131-135401_042597_movie_t-2.jpg", "2020-0131-135401_042597_movie_t-1.jpg", "2020-0131-135401_042597_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of turning van", "environment_perception": "This is an urban intersection on a two-way road that opens into three lanes in the same direction, with a signal and no median. Traffic is moderate on smooth pavement. Ahead-left, a red van on the left side of the lane is making a left turn at the junction, slowing and briefly narrowing the ego vehicle’s path. Straight ahead, a white car in the center lane proceeds through the crosswalk and appears to be the vehicle the ego car is following. Ahead-right, a silver minivan rolls forward in its lane toward the intersection and seems to be preparing for a right turn without moving into the ego lane. A few pedestrians are waiting on the right corner near the crosswalk and storefronts.", "hazard_reasoning": "The main concern is the red van turning left from the left side of the lane. Its turning movement could interfere with the ego vehicle’s path, so it should be monitored as a potential conflict."}
{"id": "train_09841", "split": "train", "clip_key": "2020-0131-135401_030301_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030301"}, "frames": ["2020-0131-135401_030301_movie_t-3.jpg", "2020-0131-135401_030301_movie_t-2.jpg", "2020-0131-135401_030301_movie_t-1.jpg", "2020-0131-135401_030301_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the black sedan approaching in the intersection", "environment_perception": "The scene shows an urban two-way street with one lane in each direction, bordered by midrise buildings and a smooth road surface, as traffic moves through a signalized junction. In the intersection area, a black sedan coming from the opposite direction is traveling toward the ego vehicle and moving through ahead. A white flatbed truck is positioned near the right curb beside the ego lane and appears to be creeping forward, with a possible chance of merging into the lane. Ahead of the ego vehicle, beyond the crosswalk, a white box truck is moving slowly and influencing same-direction flow. The signal for the ego direction is green.", "hazard_reasoning": "The main concern is the black sedan in the intersection, since it is approaching in the opposing direction and could conflict with the ego car’s path. Because of this, the safest response is to yield and avoid a potential collision."}
{"id": "train_09842", "split": "train", "clip_key": "2020-0131-135401_042597_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "042597"}, "frames": ["2020-0131-135401_042597_movie_t-3.jpg", "2020-0131-135401_042597_movie_t-2.jpg", "2020-0131-135401_042597_movie_t-1.jpg", "2020-0131-135401_042597_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of turning van", "environment_perception": "This is an urban two-way road opening into three lanes in the same direction at a signalized intersection, with smooth pavement, no median, and moderate traffic. Ahead-left, a red van positioned along the left side of the lane is making a left turn at the intersection, slowing the flow and briefly narrowing space for the ego vehicle. Straight ahead, a white car in the center lane proceeds through the crosswalk and appears to be setting the pace. Ahead-right, a silver minivan rolls forward in its lane toward the junction while preparing to turn right, but it does not intrude into the ego path. A few pedestrians are waiting on the right corner near the crosswalk and storefronts.", "hazard_reasoning": "The main risk is the red van ahead-left because it is turning left at the intersection. Its movement could conflict with the ego vehicle’s path, so it should be monitored as the primary hazard."}
{"id": "train_09843", "split": "train", "clip_key": "2020-0131-135401_030301_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030301"}, "frames": ["2020-0131-135401_030301_movie_t-3.jpg", "2020-0131-135401_030301_movie_t-2.jpg", "2020-0131-135401_030301_movie_t-1.jpg", "2020-0131-135401_030301_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the black sedan approaching in the intersection", "environment_perception": "A two-way urban street with one lane in each direction passes between midrise buildings on smooth pavement, and traffic is moderate as vehicles move through a signalized intersection. A black sedan is ahead in the intersection in the oncoming lane, moving toward the ego vehicle as it continues through. On the right side near the ego lane, a white flatbed truck is close to the curb and inching forward, with a possibility of edging into the lane. Farther ahead in the ego lane past the crosswalk, a white box truck is traveling slowly and leading same-direction traffic. The signal for the ego direction is green.", "hazard_reasoning": "The main concern is the black sedan in the intersection, since it is coming toward the ego vehicle in its lane and could cross into the ego path unexpectedly. This creates a possible collision risk, so the driver should yield."}
{"id": "train_09844", "split": "train", "clip_key": "2020-0220-102630_036496_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "036496"}, "frames": ["2020-0220-102630_036496_movie_t-3.jpg", "2020-0220-102630_036496_movie_t-2.jpg", "2020-0220-102630_036496_movie_t-1.jpg", "2020-0220-102630_036496_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a city intersection with multiple lanes, marked zebra crossings, and smooth road surface. The ego vehicle is stopped at a signalized junction while a black minivan ahead in the same lane moves left across its path. On the left corner, a few pedestrians and cyclists are waiting by the crosswalk, and oncoming traffic continues straight through the intersection from right to left. Traffic lights and directional signs are visible overhead.", "hazard_reasoning": "The main hazard is the black minivan turning left directly in front of the ego vehicle in the same lane. The ego driver should keep following it at a safe distance and be ready to adjust speed to avoid contact."}
{"id": "train_09845", "split": "train", "clip_key": "2020-0220-102630_036496_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "036496"}, "frames": ["2020-0220-102630_036496_movie_t-3.jpg", "2020-0220-102630_036496_movie_t-2.jpg", "2020-0220-102630_036496_movie_t-1.jpg", "2020-0220-102630_036496_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a signalized urban intersection with multiple lanes, marked zebra crossings, and dry, even pavement. The ego vehicle is stopped in its lane while a black minivan ahead moves left across the front of the ego car, briefly blocking the path. On the left side near the crosswalk, several pedestrians and a few cyclists are waiting to cross. Farther across the junction, oncoming vehicles continue straight through from right to left without entering the ego lane. Traffic lights and road signs are also visible overhead.", "hazard_reasoning": "The main concern is the black minivan making a left turn directly in front of the ego vehicle. Because it is moving across the ego lane, the driver should keep distance and be ready to slow to avoid contact."}
{"id": "train_09846", "split": "train", "clip_key": "2020-0218-103119_002846_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002846"}, "frames": ["2020-0218-103119_002846_movie_t-3.jpg", "2020-0218-103119_002846_movie_t-2.jpg", "2020-0218-103119_002846_movie_t-1.jpg", "2020-0218-103119_002846_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the silver van", "environment_perception": "The scene shows an urban multi-lane roadway with a painted median and clear pavement between mid-rise buildings, with light traffic moving normally. The ego vehicle is traveling in the left lane, and a silver van directly ahead in the same lane is proceeding steadily and setting the pace. On the right, another silver van is moving toward the ego vehicle near the intersection and could enter the ego lane. Farther ahead, oncoming vehicles continue straight through the junction, and overhead traffic lights are visible with nothing unusual in the environment.", "hazard_reasoning": "The main concern is the silver van in the right lane approaching the intersection while the signal is green. Because it is moving toward the ego vehicle and may cross its path, the driver should stay alert and prepare for possible conflict at the junction."}
{"id": "train_09847", "split": "train", "clip_key": "2020-0218-103119_002846_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002846"}, "frames": ["2020-0218-103119_002846_movie_t-3.jpg", "2020-0218-103119_002846_movie_t-2.jpg", "2020-0218-103119_002846_movie_t-1.jpg", "2020-0218-103119_002846_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the silver van", "environment_perception": "This is an urban multi-lane street with a painted median and clear pavement between mid-rise buildings, and the traffic flow is light. The ego vehicle stays in the left lane, with a silver van ahead in the same lane moving steadily and setting a gentle pace. On the right, another silver van is moving toward the ego vehicle from the right lane through the intersection and could cut across the ego path. Farther ahead, other vehicles continue straight in the oncoming lanes. Traffic lights are visible overhead at the junction, and no special restrictions or extra hazards stand out.", "hazard_reasoning": "The main concern is the silver van in the right lane approaching the intersection toward the ego car under a green signal. Because it is advancing through the junction, it may enter or cross the ego vehicle’s path, so the driver should monitor it closely."}
{"id": "train_09848", "split": "train", "clip_key": "2020-0220-102630_036496_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "036496"}, "frames": ["2020-0220-102630_036496_movie_t-3.jpg", "2020-0220-102630_036496_movie_t-2.jpg", "2020-0220-102630_036496_movie_t-1.jpg", "2020-0220-102630_036496_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a signalized urban intersection with multiple lanes, clear zebra crossings, and smooth road surface, with moderate traffic while the ego vehicle is stopped or waiting. A black minivan ahead in the ego lane is turning left across the front of the ego car, briefly limiting forward progress. On the left corner, several pedestrians and a few cyclists are standing by the crosswalk, seemingly waiting for a chance to cross. Other vehicles are visible beyond the intersection moving straight from right to left, but they do not enter the ego lane. Traffic lights and overhead direction signs can also be seen.", "hazard_reasoning": "The main hazard is the black minivan making a left turn directly in front of the ego vehicle in the same lane. The ego driver should keep a safe following distance and be ready to adjust speed to avoid contact."}
{"id": "train_09849", "split": "train", "clip_key": "2020-0205-103411_019930_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "019930"}, "frames": ["2020-0205-103411_019930_movie_t-3.jpg", "2020-0205-103411_019930_movie_t-2.jpg", "2020-0205-103411_019930_movie_t-1.jpg", "2020-0205-103411_019930_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "A multi-lane urban road leads into a broad signalized intersection with zebra crossings and a low fence divider on the right. The road surface is clear and traffic appears moderate. In the ego lane ahead, a black van is slowing and turning right through the intersection, consistent with the right-turn marking on the lane. A silver small car in the adjacent lane on the right continues forward toward the junction beside it but does not merge. A blue bus comes across from the left on the cross street, moving left to right in front of the ego lane, while other vehicles pass normally through the junction.", "hazard_reasoning": "The main concern is the black van ahead, which is making a right turn in the ego lane at the intersection. Since it is directly in front and slowing for the turn, it could reduce your progress or require a quick adjustment. The safest response is to stay behind it and keep a proper following distance."}
{"id": "train_09850", "split": "train", "clip_key": "2020-0205-103411_019930_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "019930"}, "frames": ["2020-0205-103411_019930_movie_t-3.jpg", "2020-0205-103411_019930_movie_t-2.jpg", "2020-0205-103411_019930_movie_t-1.jpg", "2020-0205-103411_019930_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "A wide signalized urban intersection lies ahead on a multi-lane road with zebra crossings and a low fence divider on the right; the pavement is clear and traffic is moderate. In the ego lane, a black van ahead is slowing and beginning a right turn at the junction, consistent with the right-turn arrow marked in this lane. A silver small car to the right in the neighboring same-direction lane continues toward the intersection beside it but does not merge. On the cross street, a blue bus moves left to right in front of the ego lane, while other vehicles pass through normally without sudden actions.", "hazard_reasoning": "The main concern is the black van ahead making a right turn within the ego lane. Since it is slowing for the turn, it can reduce your progress and may need you to react or adjust speed. This is a low-risk turning-vehicle situation, so keeping a safe following distance and following the vehicle ahead is appropriate."}
{"id": "train_09851", "split": "train", "clip_key": "2020-0131-135401_030223_movie", "source": {"subset": "drama", "scenario": "2020-0131-135401", "frame": "030223"}, "frames": ["2020-0131-135401_030223_movie_t-3.jpg", "2020-0131-135401_030223_movie_t-2.jpg", "2020-0131-135401_030223_movie_t-1.jpg", "2020-0131-135401_030223_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming truck.", "environment_perception": "An urban two-way road approaches a signal-controlled intersection with no median and slightly worn pavement, and the ego vehicle is closing in under moderate traffic. The traffic light ahead is green. In the junction, a white truck is moving in from the right side toward the ego vehicle, crossing through the intersection and possibly encroaching into the ego lane. A small white car follows behind it in the opposing lane, continuing straight and limiting the open space. At the right curb, a silver hatchback is waiting to pull out from the side street once the way is clear.", "hazard_reasoning": "The main concern is the white truck on the right side of the intersection moving toward the ego vehicle. If the ego car continues without yielding, the truck’s trajectory could overlap with the ego path and create a collision risk."}
{"id": "train_09852", "split": "train", "clip_key": "2020-0226-101332_010931_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "010931"}, "frames": ["2020-0226-101332_010931_movie_t-3.jpg", "2020-0226-101332_010931_movie_t-2.jpg", "2020-0226-101332_010931_movie_t-1.jpg", "2020-0226-101332_010931_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the black sedan", "environment_perception": "This is an urban two-way road with one narrow lane in each direction and a solid yellow center line, bordered by shops and offices. The pavement looks dry and smooth, and traffic is light as the ego vehicle travels in the left lane. A black sedan is coming toward the ego car in the opposite lane on the right. Farther ahead on the right curb of the oncoming side, a cyclist is riding close to the guardrail, while several pedestrians on the left sidewalk remain behind railings and do not step into the road.", "hazard_reasoning": "The main concern is the black sedan approaching in the opposite direction. It needs to be monitored because it could drift, change lanes, or turn unexpectedly into the ego vehicle’s path, creating a collision risk."}
{"id": "train_09853", "split": "train", "clip_key": "2020-0218-103119_002846_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002846"}, "frames": ["2020-0218-103119_002846_movie_t-3.jpg", "2020-0218-103119_002846_movie_t-2.jpg", "2020-0218-103119_002846_movie_t-1.jpg", "2020-0218-103119_002846_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the silver van", "environment_perception": "The scene shows a multi-lane urban roadway with a painted median and clear pavement between mid-rise buildings, and overall traffic appears light. The ego vehicle is proceeding in the left lane, with a silver van directly ahead in the same lane moving steadily and setting a moderate pace. On the right side, another silver van in the adjacent lane is moving toward the ego vehicle through the intersection and could potentially cross into the ego path. Additional oncoming vehicles are visible farther ahead, continuing straight through the junction, and overhead signal lights control the intersection with nothing unusual apparent.", "hazard_reasoning": "The main concern is the silver van approaching from the right lane and moving toward the ego vehicle at the intersection. Since the signal is green, it may continue through and intersect the ego vehicle’s path, so it deserves attention as the primary hazard."}
{"id": "train_09854", "split": "train", "clip_key": "2020-0226-101332_010931_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "010931"}, "frames": ["2020-0226-101332_010931_movie_t-3.jpg", "2020-0226-101332_010931_movie_t-2.jpg", "2020-0226-101332_010931_movie_t-1.jpg", "2020-0226-101332_010931_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the black sedan", "environment_perception": "A dry, smooth urban two-way road with one narrow lane in each direction and a solid yellow center line passes between commercial buildings. The ego vehicle is moving along the left lane with light traffic around it. In the opposite lane, a black sedan is traveling toward the ego vehicle. Farther ahead on the right side of that oncoming lane, a cyclist moves toward the camera near the guardrail, while pedestrians stay on the left sidewalk behind railings and remain off the road.", "hazard_reasoning": "The main concern is the black sedan approaching in the opposite lane. Because it is coming toward the ego car, it could create a collision risk if it shifts position or turns unexpectedly, so it should be monitored closely."}
{"id": "train_09855", "split": "train", "clip_key": "2020-0205-103411_019930_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "019930"}, "frames": ["2020-0205-103411_019930_movie_t-3.jpg", "2020-0205-103411_019930_movie_t-2.jpg", "2020-0205-103411_019930_movie_t-1.jpg", "2020-0205-103411_019930_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "A broad signalized urban arterial leads into a large intersection with zebra crossings, and a low fence divider runs along the right side; the road surface looks clear and traffic is moderate. In front of the ego lane, a black van reduces speed and turns right through the intersection, consistent with the right-turn marking painted in this lane. On the right, a silver compact car in the adjacent same-direction lane continues forward toward the junction beside it, but it does not merge. A blue bus enters from the left on the cross street and moves left to right across the front of the ego lane. Other vehicles on both roads continue normally without sudden actions.", "hazard_reasoning": "The main concern is the black van ahead, which is turning right at the intersection while occupying the ego lane and following the lane’s right-turn indication. This movement can force the driver to slow down or react promptly, so the safest response is to stay behind it with proper following distance."}
{"id": "train_09856", "split": "train", "clip_key": "2020-0226-101332_010931_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "010931"}, "frames": ["2020-0226-101332_010931_movie_t-3.jpg", "2020-0226-101332_010931_movie_t-2.jpg", "2020-0226-101332_010931_movie_t-1.jpg", "2020-0226-101332_010931_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the black sedan", "environment_perception": "This is an urban two-way road with one lane in each direction and a solid yellow center line, bordered by shops and office buildings. The pavement looks dry and clear, and traffic is light while the ego vehicle continues in the left lane. A black sedan is coming toward the ego car in the opposite lane. Farther ahead on the right curb of the oncoming side, a cyclist rides toward the camera near the guardrail, staying at the edge. On the left sidewalk, several pedestrians pass a shelter behind railings and remain off the roadway.", "hazard_reasoning": "The main concern is the black sedan traveling toward the ego vehicle in the right lane. It should be monitored because it could shift lanes or turn unexpectedly into the ego path, creating a collision risk."}
{"id": "train_09857", "split": "train", "clip_key": "2020-0226-140503_027656_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "027656"}, "frames": ["2020-0226-140503_027656_movie_t-3.jpg", "2020-0226-140503_027656_movie_t-2.jpg", "2020-0226-140503_027656_movie_t-1.jpg", "2020-0226-140503_027656_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A busy urban junction is shown on a dry two-way road with one lane in each direction and no center divider. In front, a white van approaches from the opposite direction in its lane and has a left-turn signal on, creating a possible conflict with the ego vehicle’s route. On the left side near the crosswalk, several pedestrians are waiting at the curb close to the road, while a bicyclist is paused at the sidewalk edge and appears ready to enter the crossing but is still yielding. Traffic lights are present above the intersection.", "hazard_reasoning": "The main risk is the oncoming white van, which is preparing to turn left across the intersection and may cut through the ego vehicle’s path. Because of that potential crossing movement, the safest response is to slow down and be ready to avoid a collision."}
{"id": "train_09858", "split": "train", "clip_key": "2020-0220-102630_005962_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "005962"}, "frames": ["2020-0220-102630_005962_movie_t-3.jpg", "2020-0220-102630_005962_movie_t-2.jpg", "2020-0220-102630_005962_movie_t-1.jpg", "2020-0220-102630_005962_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "The scene shows an urban multi-lane road with three lanes in the same direction leading to an intersection under an overpass. The pavement appears smooth, traffic is moderate, and the right-turn lane is more crowded. Cones run along the left curb next to a building, while a few vehicles are stopped or slowly moving near the right curb. In front of the ego lane, a silver sedan is already turning left across the intersection under a green light. On the right side, a dark van and several cars are lined up slowly in the right-turn lane close to the junction. Pedestrians remain on the left sidewalk behind the cones and do not enter the road.", "hazard_reasoning": "The main risk is the silver sedan making a left turn in front of the ego vehicle in the middle of the intersection. Even though the signal is green, its path can still intersect the ego-vehicle’s route. This creates a potential conflict, so reducing speed gives more time to react and helps avoid a collision."}
{"id": "train_09859", "split": "train", "clip_key": "2020-0220-102630_005962_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "005962"}, "frames": ["2020-0220-102630_005962_movie_t-3.jpg", "2020-0220-102630_005962_movie_t-2.jpg", "2020-0220-102630_005962_movie_t-1.jpg", "2020-0220-102630_005962_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A three-lane urban road leads into an intersection under an overpass, with smooth pavement and moderate traffic that is denser in the right-turn lane. Construction cones line the left curb beside a building, and a few vehicles are stopped or inching along near the curb on the right. In front of the ego lane, a silver sedan is already midway through a left turn across the intersection under a green light. On the right, a dark van and several other cars are slowly queued in the right-turn lane near the junction. Pedestrians are visible on the left sidewalk behind the cones and are not moving toward the road.", "hazard_reasoning": "The main risk is the silver sedan completing its left turn in the ego vehicle's path while it is still in the intersection. Even though the signal is green, the turning car could cross close enough to interfere with travel, so reducing speed gives more time to respond and avoid contact."}
{"id": "train_09860", "split": "train", "clip_key": "2020-0213-143552_075365_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "075365"}, "frames": ["2020-0213-143552_075365_movie_t-3.jpg", "2020-0213-143552_075365_movie_t-2.jpg", "2020-0213-143552_075365_movie_t-1.jpg", "2020-0213-143552_075365_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A clear-sky urban arterial with multiple lanes and smooth pavement approaches a junction, with a guardrail separating directions and a curbside barrier on the right. In the ego lane ahead, a blue truck is slowing as it prepares to turn right, briefly limiting the ego vehicle’s forward progress. A white hatchback in the left adjacent lane continues ahead past the ego car, staying in its lane and leaving less room to move left. Farther right, a large white semi-trailer sits along the curbside shoulder beside a striped gore, narrowing the available space and visibility near the turn. Lane arrows and channel markings indicate the right-turn approach.", "hazard_reasoning": "The main concern is the blue truck directly ahead in the ego lane, since it is reducing speed to make a right turn. This turning maneuver can cause a sudden slowdown in front of the ego vehicle, requiring the driver to brake and keep a safe following gap."}
{"id": "train_09861", "split": "train", "clip_key": "2020-0129-105040_058004_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "058004"}, "frames": ["2020-0129-105040_058004_movie_t-3.jpg", "2020-0129-105040_058004_movie_t-2.jpg", "2020-0129-105040_058004_movie_t-1.jpg", "2020-0129-105040_058004_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the SUV", "environment_perception": "The scene shows a narrow urban two-way road with one lane in each direction, lined by buildings and a fence. The pavement is damp in places and includes two small speed humps, while green bollards mark a separated shoulder on the left; a traffic light is also visible. On the left side ahead, a person is moving away along the bollard-protected shoulder next to the fence, staying clear of the traffic lane. A blue SUV is coming toward the camera in the right lane, and a triangular school-zone warning sign appears farther ahead.", "hazard_reasoning": "The main concern is the blue SUV approaching in the opposite direction. Because it is closing in along the lane ahead, it may force the ego vehicle to adjust course or could drift into the ego path, creating a possible collision risk. Careful maneuvering is needed."}
{"id": "train_09862", "split": "train", "clip_key": "2020-0226-140503_027656_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "027656"}, "frames": ["2020-0226-140503_027656_movie_t-3.jpg", "2020-0226-140503_027656_movie_t-2.jpg", "2020-0226-140503_027656_movie_t-1.jpg", "2020-0226-140503_027656_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "This is a dense urban intersection on a dry road with moderate traffic, where the street has one lane in each direction and no median. A white van is approaching from the opposite direction in its lane and has its left turn signal on, so it may cut across the ego vehicle’s route. Near the left corner, several pedestrians are standing at the curb by the crosswalk, and a bicyclist is also waiting at the sidewalk edge, appearing ready to enter but still yielding. Traffic lights are mounted overhead controlling the junction.", "hazard_reasoning": "The main concern is the oncoming white van, which is signaling a left turn and could move across the vehicle’s path through the intersection. Because of that potential crossing movement, the safest response is to slow down and be ready for the van to turn."}
{"id": "train_09863", "split": "train", "clip_key": "2020-0129-105040_058004_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "058004"}, "frames": ["2020-0129-105040_058004_movie_t-3.jpg", "2020-0129-105040_058004_movie_t-2.jpg", "2020-0129-105040_058004_movie_t-1.jpg", "2020-0129-105040_058004_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the SUV", "environment_perception": "A narrow urban two-way road with one lane in each direction continues ahead, lined by buildings and a fence. The pavement shows wet patches and two small speed humps, while green bollards mark a separated shoulder on the left near a traffic light. A person ahead on the left is moving away along the bollard-protected shoulder beside the fence and stays out of the driving lane. A blue SUV is coming toward us in the right lane, and a triangular school-zone warning sign is visible farther ahead.", "hazard_reasoning": "The main concern is the blue SUV approaching head-on in the opposite lane. Because it is moving toward the ego vehicle, there is some chance it could drift into the lane or force the driver to react, so it should be treated as a low-level oncoming-vehicle hazard and passed with caution."}
{"id": "train_09864", "split": "train", "clip_key": "2020-0127-132751_037523_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "037523"}, "frames": ["2020-0127-132751_037523_movie_t-3.jpg", "2020-0127-132751_037523_movie_t-2.jpg", "2020-0127-132751_037523_movie_t-1.jpg", "2020-0127-132751_037523_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the black hatchback", "environment_perception": "A multi-lane urban arterial with newly paved roadway and a bollard-separated median on the right leads into a signalized intersection. A black hatchback ahead in the ego lane is approaching the crosswalk and slowing as the traffic queue builds. A white box truck a little farther ahead in the left lane continues forward and also reduces speed near the stop line, moving parallel to the ego vehicle. Oncoming cars travel on the right side past the intersection, separated by the median, while a pedestrian waits on the far-side sidewalk near the corner.", "hazard_reasoning": "The black hatchback in front of the ego vehicle is the key object to watch. Since it is already slowing with the queue, it may brake more sharply or shift position unexpectedly, so the driver should stay alert for a possible cut-in or sudden deceleration."}
{"id": "train_09865", "split": "train", "clip_key": "2020-0220-102630_005962_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "005962"}, "frames": ["2020-0220-102630_005962_movie_t-3.jpg", "2020-0220-102630_005962_movie_t-2.jpg", "2020-0220-102630_005962_movie_t-1.jpg", "2020-0220-102630_005962_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "This is an urban roadway with three lanes in the same direction leading toward an intersection under an overpass. The pavement is clear, traffic is moderate, and the right-turn lane is more crowded than the others. Cones run along the left curb near a building, while several vehicles are parked or inching forward along the right side. In front, a silver sedan is making a left turn through the intersection under a green light. A dark van and a few other cars are waiting slowly in the right-turn lane near the junction. Pedestrians remain on the left sidewalk behind the cones and do not enter the roadway.", "hazard_reasoning": "The main hazard is the silver sedan completing a left turn in the intersection ahead of the ego vehicle. Even though it has a green signal, its turning path could cross into the ego vehicle's route. This creates a need to slow down and be ready to react to avoid a possible conflict."}
{"id": "train_09866", "split": "train", "clip_key": "2020-0220-102630_036428_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "036428"}, "frames": ["2020-0220-102630_036428_movie_t-3.jpg", "2020-0220-102630_036428_movie_t-2.jpg", "2020-0220-102630_036428_movie_t-1.jpg", "2020-0220-102630_036428_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "This is an urban commercial area approaching a signalized multi-lane intersection with no median and clear pavement. Traffic is moving slowly near the stop line. A black van straight ahead in the ego lane is making a left turn at the intersection. A white van in the right adjacent lane is stopped near the crosswalk. On the near-left corner, several pedestrians and two bicycles are waiting at the curb. Traffic lights are controlling the junction.", "hazard_reasoning": "The main hazard is the black van ahead, which is turning left from the ego lane. Its turning path could intrude into the ego vehicle's route without much warning, so the safe response is to stay behind it, keep distance, and be ready for its movement."}
{"id": "train_09867", "split": "train", "clip_key": "2020-0129-105040_058004_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "058004"}, "frames": ["2020-0129-105040_058004_movie_t-3.jpg", "2020-0129-105040_058004_movie_t-2.jpg", "2020-0129-105040_058004_movie_t-1.jpg", "2020-0129-105040_058004_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Carefully manoeuvre around the SUV", "environment_perception": "The scene shows a narrow urban two-way road with one lane in each direction, lined by buildings and a fence. The road surface appears damp, with two small speed humps visible, and green bollards mark a separated shoulder on the left near a traffic light. A person is ahead on the left, walking away inside the bollard-protected shoulder by the fence, not in the travel lane. Farther ahead, a blue SUV is coming toward the camera in the opposite lane, and a triangular school-zone sign is also visible.", "hazard_reasoning": "The main concern is the blue SUV approaching in the opposing lane. Since it is moving toward the ego vehicle, there is some risk if it drifts toward our path or if space becomes tight on this narrow road, so the driver should proceed cautiously to avoid a possible collision."}
{"id": "train_09868", "split": "train", "clip_key": "2020-0213-143552_075365_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "075365"}, "frames": ["2020-0213-143552_075365_movie_t-3.jpg", "2020-0213-143552_075365_movie_t-2.jpg", "2020-0213-143552_075365_movie_t-1.jpg", "2020-0213-143552_075365_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "An urban multilane arterial with smooth pavement lies under clear skies, with a guardrail separating opposite directions and a curbside barrier along the right side; traffic is moderate and thinning near a junction. Directly ahead in the ego lane, a blue truck is slowing for a right turn, following the right-turn-only arrows and briefly limiting the ego vehicle’s pace. In the left adjacent lane, a white hatchback continues forward and passes while staying in its lane, which leaves fewer chances for the ego car to merge left. On the far right, a large white semi-trailer sits along the curbside shoulder next to a striped gore, reducing available space and visibility near the turn area. Directional arrows and channelization markings show the approach to the right turn.", "hazard_reasoning": "The main hazard is the blue truck ahead in the ego lane slowing down to make a right turn. Its deceleration for the turn could require the driver to brake abruptly, so the safest response is to reduce speed and keep a proper following distance."}
{"id": "train_09869", "split": "train", "clip_key": "2020-0220-102630_036428_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "036428"}, "frames": ["2020-0220-102630_036428_movie_t-3.jpg", "2020-0220-102630_036428_movie_t-2.jpg", "2020-0220-102630_036428_movie_t-1.jpg", "2020-0220-102630_036428_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "This is an urban commercial area approaching a signalized intersection with multiple lanes, no median, and clear pavement. Traffic is light to moderate and moving slowly near the stop line. A black van ahead in the ego lane is making a left turn through the intersection. A white van in the right adjacent lane is stopped near the crosswalk beside the ego vehicle. On the near-left corner, several pedestrians and two bicycles are waiting at the curb, and traffic lights are controlling the junction.", "hazard_reasoning": "The main concern is the black van ahead as it turns left in the ego lane. Its turning path could enter or affect the ego vehicle’s space unexpectedly, so the safest action is to continue behind it at a cautious distance and be ready for its movement."}
{"id": "train_09870", "split": "train", "clip_key": "2020-0218-103119_002936_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002936"}, "frames": ["2020-0218-103119_002936_movie_t-3.jpg", "2020-0218-103119_002936_movie_t-2.jpg", "2020-0218-103119_002936_movie_t-1.jpg", "2020-0218-103119_002936_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming vehicle.", "environment_perception": "A straight urban avenue with several lanes in both directions is lined by tall buildings, and the center divider has striped markings with low hedges. The road looks clear and traffic is sparse. A black car ahead in the ego lane is moving steadily and is effectively the lead vehicle. To the right, in the oncoming lanes, a light van and a black sedan are coming toward the ego car while staying within their lanes behind the median. On the left side, a cyclist travels along the fenced edge of the road, parallel to traffic and outside the travel lanes. Sun glare from the upper left slightly obscures the scene.", "hazard_reasoning": "The black sedan in the opposing lane is approaching directly toward the ego vehicle. Because it is an oncoming vehicle, it creates a potential head-on conflict, so the appropriate response is to yield."}
{"id": "train_09871", "split": "train", "clip_key": "2020-0218-103119_002936_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002936"}, "frames": ["2020-0218-103119_002936_movie_t-3.jpg", "2020-0218-103119_002936_movie_t-2.jpg", "2020-0218-103119_002936_movie_t-1.jpg", "2020-0218-103119_002936_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming vehicle.", "environment_perception": "A straight urban roadway with several lanes in each direction stretches between tall buildings, with a striped median and low hedges dividing opposing traffic; the road surface looks clear and traffic is sparse. A black car ahead in the ego lane is moving steadily and appears to be setting the pace. To the right, in the opposite-direction lanes, a light van and a black sedan are both traveling toward the ego vehicle while staying within their lanes and separated by the median. A cyclist is visible along the fenced left side of the road, riding parallel to traffic without entering the travel lanes. Sun glare from the upper left slightly reduces clarity.", "hazard_reasoning": "The main concern is the black sedan approaching in the oncoming lane toward the ego car. Since it is coming head-on, it creates a collision risk, so the appropriate response is to yield."}
{"id": "train_09872", "split": "train", "clip_key": "2020-0226-140503_027656_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "027656"}, "frames": ["2020-0226-140503_027656_movie_t-3.jpg", "2020-0226-140503_027656_movie_t-2.jpg", "2020-0226-140503_027656_movie_t-1.jpg", "2020-0226-140503_027656_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A city intersection is visible with a dry roadway and moderate traffic on a two-way street that has one lane in each direction and no median. In front, a white van is approaching from the opposite direction in its lane and has its left signal on, so it may cut across the ego vehicle’s path while turning. On the left corner, several pedestrians are standing at the curb near the crosswalk, and a bicyclist is also waiting at the sidewalk edge, yielding before entering. Traffic lights are present overhead.", "hazard_reasoning": "The main concern is the oncoming white van, which is signaling a left turn from across the intersection. Because its movement could intersect the ego vehicle’s lane, the safe response is to slow down and be ready for possible conflict at the junction."}
{"id": "train_09873", "split": "train", "clip_key": "2020-0226-140503_076255_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "076255"}, "frames": ["2020-0226-140503_076255_movie_t-3.jpg", "2020-0226-140503_076255_movie_t-2.jpg", "2020-0226-140503_076255_movie_t-1.jpg", "2020-0226-140503_076255_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "This is an urban signalized multi-lane intersection with wide zebra crossings and clear asphalt ahead. Traffic appears moderate, and the ego vehicle is stopped at the stop line with a red signal facing this approach. A black SUV is moving from left to right across the junction in front of the ego car, while traffic continues farther beyond the intersection. On the right curb, several trucks and cars are lined up and moving slowly, and a small box truck is parked at the left corner near pedestrians on the sidewalk. There are no lane blockages or roadworks.", "hazard_reasoning": "The main hazard is the black SUV crossing left to right through the intersection ahead of the ego vehicle. Since it is already traversing the junction and has priority, the ego driver must remain stopped to avoid a collision with it."}
{"id": "train_09874", "split": "train", "clip_key": "2020-0220-102630_036428_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "036428"}, "frames": ["2020-0220-102630_036428_movie_t-3.jpg", "2020-0220-102630_036428_movie_t-2.jpg", "2020-0220-102630_036428_movie_t-1.jpg", "2020-0220-102630_036428_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "This is an urban commercial area with a multi-lane approach to a signalized intersection, no median, and clear pavement. Traffic is moderate and moving slowly near the stop line. A black van ahead in the ego lane is making a left turn through the intersection. A white van in the neighboring right lane is stopped near the crosswalk beside the ego vehicle. On the near-left corner, several pedestrians and two bicycles are waiting at the curb. Overhead signals are controlling the junction.", "hazard_reasoning": "The main concern is the black van ahead, which is turning left from the ego lane on the left side of the intersection. Its turning path could unexpectedly interfere with your route, so the safest action is to stay behind it, keep a proper gap, and be ready for its movement."}
{"id": "train_09875", "split": "train", "clip_key": "2020-0226-140503_076255_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "076255"}, "frames": ["2020-0226-140503_076255_movie_t-3.jpg", "2020-0226-140503_076255_movie_t-2.jpg", "2020-0226-140503_076255_movie_t-1.jpg", "2020-0226-140503_076255_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "This is an urban signal-controlled multi-lane intersection with wide zebra crossings and clear asphalt ahead. Traffic is moderate, and the ego vehicle is stopped at the stop line with a red signal showing for this approach. A black SUV comes in from the left and travels rightward across the junction ahead, blocking the path and keeping the ego car stationary. Beyond the intersection, several vehicles continue along the roadway, while a number of trucks and cars are lined up along the right curb and moving slowly. A small box truck is parked at the left corner near pedestrians on the sidewalk. The lane itself has no construction or other blockage.", "hazard_reasoning": "The main hazard is the black SUV moving from left to right through the intersection directly ahead of the ego vehicle. Since it is crossing through with the right-of-way, it creates a potential collision risk if the ego car moves. The safe response is to remain stopped and let the crossing vehicle pass."}
{"id": "train_09876", "split": "train", "clip_key": "2020-0213-143552_075365_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "075365"}, "frames": ["2020-0213-143552_075365_movie_t-3.jpg", "2020-0213-143552_075365_movie_t-2.jpg", "2020-0213-143552_075365_movie_t-1.jpg", "2020-0213-143552_075365_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A clear-sky urban multilane arterial with smooth pavement approaches a junction, split by a guardrail and bordered by a right-side curb barrier. Traffic is moderate but slowing. In the ego lane ahead, a blue truck is reducing speed to make a right turn, which is already limiting the vehicle's forward progress. A white hatchback in the left adjacent lane continues ahead and passes, leaving less room for the ego car to shift left. Farther right, a large white semi-trailer sits along the shoulder near a striped gore area, tightening the available space near the turn zone. Lane arrows and channel markings indicate the right-turn approach.", "hazard_reasoning": "The main risk is the blue truck directly ahead slowing as it turns right in the ego lane. Its deceleration could require the driver to brake suddenly, so the safest response is to reduce speed and keep a proper following gap."}
{"id": "train_09877", "split": "train", "clip_key": "2020-0226-140503_014990_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "014990"}, "frames": ["2020-0226-140503_014990_movie_t-3.jpg", "2020-0226-140503_014990_movie_t-2.jpg", "2020-0226-140503_014990_movie_t-1.jpg", "2020-0226-140503_014990_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the approaching van", "environment_perception": "This is an urban two-way road with one lane in each direction approaching a signalized intersection. The road surface is dry and clear, and traffic appears light. The ego vehicle is moving forward under a green signal. To the right of the intersection, a black van in the opposing lane is coming toward the ego vehicle and continuing straight within its lane. Farther ahead in the ego lane past the crosswalk, a white box van is traveling away at a slow pace. On the left near the curb, two cyclists are heading toward the corner and beginning to enter the zebra crossing.", "hazard_reasoning": "The main risk is the black van approaching from the right in the opposite direction. It is the closest moving object that could conflict with the ego vehicle's path, so the driver should give way and avoid a possible collision."}
{"id": "train_09878", "split": "train", "clip_key": "2020-0226-140503_014990_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "014990"}, "frames": ["2020-0226-140503_014990_movie_t-3.jpg", "2020-0226-140503_014990_movie_t-2.jpg", "2020-0226-140503_014990_movie_t-1.jpg", "2020-0226-140503_014990_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the approaching van", "environment_perception": "A light-traffic urban road with one lane in each direction approaches a signal-controlled intersection. The surface is dry and clear, and the ego vehicle is proceeding through a green light. On the right side of the intersection, a black van in the opposite lane is coming toward the ego vehicle and keeps moving straight within its lane. Farther ahead in the ego lane past the crosswalk, a white box van is continuing away at a slow, steady pace. On the left near the curb, two cyclists are moving toward the corner and beginning to enter the zebra crossing.", "hazard_reasoning": "The main risk is the black van approaching from the right in the oncoming lane. Because it is moving toward the ego vehicle through the intersection, the driver should yield and maintain caution to avoid a possible collision."}
{"id": "train_09879", "split": "train", "clip_key": "2020-0226-140503_076255_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "076255"}, "frames": ["2020-0226-140503_076255_movie_t-3.jpg", "2020-0226-140503_076255_movie_t-2.jpg", "2020-0226-140503_076255_movie_t-1.jpg", "2020-0226-140503_076255_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop immediately", "environment_perception": "The scene shows an urban signalized intersection with multiple lanes, wide zebra crosswalks, and clear asphalt ahead. Traffic is moderate, and the ego vehicle is stopped at the stop line with a red signal facing this direction. A black SUV is moving from the left side across the intersection to the right in front of the ego car, which keeps the ego vehicle waiting. In the distance beyond the junction, several vehicles continue along the road, while trucks and cars line the right curb and creep forward slowly. A small box truck is parked near the left corner beside pedestrians on the sidewalk. No roadworks or other lane blockages are present.", "hazard_reasoning": "The main hazard is the black SUV crossing from left to right directly ahead of the ego vehicle. Since it is already traversing the intersection and has the right-of-way, the ego driver must remain stopped to avoid a collision."}
{"id": "train_09880", "split": "train", "clip_key": "2020-0203-154554_007610_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "007610"}, "frames": ["2020-0203-154554_007610_movie_t-3.jpg", "2020-0203-154554_007610_movie_t-2.jpg", "2020-0203-154554_007610_movie_t-1.jpg", "2020-0203-154554_007610_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "The view shows an urban approach to a signalized intersection on a two-lane road without a median, with smooth pavement and moderate, light traffic. Ahead in the ego lane, a white sedan is slowing and starting a right turn at the junction. On the left curb, a large city bus is pulled over in a bay and stays stationary, so it does not block travel. A few pedestrians are waiting near the crosswalk at the right corner, and a silver wagon is parked along the right curb before the intersection.", "hazard_reasoning": "The main concern is the white sedan directly ahead in the same lane as it reduces speed to complete a right turn at the intersection. Its deceleration can force the ego vehicle to brake to keep a safe gap, making it the most relevant hazard even though the bus and parked wagon are not obstructing the lane."}
{"id": "train_09881", "split": "train", "clip_key": "2020-0218-103119_003119_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "003119"}, "frames": ["2020-0218-103119_003119_movie_t-3.jpg", "2020-0218-103119_003119_movie_t-2.jpg", "2020-0218-103119_003119_movie_t-1.jpg", "2020-0218-103119_003119_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to black hatchback", "environment_perception": "A multi-lane urban arterial with smooth pavement stretches between tall buildings, with a painted chevron median and low hedges dividing the opposing traffic. Traffic is light and flowing normally. On the left ahead, a dark taxi in the neighboring same-direction lane travels straight at roughly the same speed as the ego vehicle. In the ego lane, a white sedan remains ahead and keeps the following distance steady, while a small truck farther forward continues toward the next intersection and could slow progress. On the far right edge of the road, a black hatchback is moving toward the ego vehicle near the guardrail.", "hazard_reasoning": "The black hatchback on the right is traveling toward the ego car. Since it is approaching from that side and could move into your lane unexpectedly, the safe response is to yield and avoid a possible collision."}
{"id": "train_09882", "split": "train", "clip_key": "2020-0218-103119_003119_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "003119"}, "frames": ["2020-0218-103119_003119_movie_t-3.jpg", "2020-0218-103119_003119_movie_t-2.jpg", "2020-0218-103119_003119_movie_t-1.jpg", "2020-0218-103119_003119_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to black hatchback", "environment_perception": "This is an urban multi-lane arterial with smooth pavement between tall buildings, split by a painted chevron area and low hedges separating the opposing flow; overall traffic is light and moving normally. On the left ahead, a dark taxi in the next lane keeps pace beside the ego vehicle and continues straight. In the ego lane, a white sedan ahead is moving steadily and defines the following distance, while a small truck farther up the lane continues toward the next intersection and could slow the flow. At the far right edge near the guardrail, a black hatchback is coming toward the ego vehicle.", "hazard_reasoning": "The black hatchback is approaching from the right side toward the ego car. Because it is moving oncoming and could enter the ego lane unexpectedly, it presents a low but real collision risk, so yielding is the safest response."}
{"id": "train_09883", "split": "train", "clip_key": "2020-0203-154554_007610_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "007610"}, "frames": ["2020-0203-154554_007610_movie_t-3.jpg", "2020-0203-154554_007610_movie_t-2.jpg", "2020-0203-154554_007610_movie_t-1.jpg", "2020-0203-154554_007610_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "The road scene is an urban approach to a signalized intersection on a two-lane single-carriageway without a median. The roadway appears clear and traffic is light to moderate. In the ego lane, a white sedan ahead is slowing as it starts a right turn at the intersection. On the left curb, a large city bus is parked in a pull-out and stays stationary, not blocking the lane. Near the right corner by the crosswalk, several pedestrians are waiting, and a silver wagon is parked along the right curb before the junction.", "hazard_reasoning": "The main concern is the white sedan ahead in the ego lane reducing speed while turning right at the intersection. Its deceleration and turn can force the driver to brake to keep a safe gap and avoid a rear-end collision."}
{"id": "train_09884", "split": "train", "clip_key": "2020-0203-154554_007610_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "007610"}, "frames": ["2020-0203-154554_007610_movie_t-3.jpg", "2020-0203-154554_007610_movie_t-2.jpg", "2020-0203-154554_007610_movie_t-1.jpg", "2020-0203-154554_007610_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "The vehicle is nearing a signalized intersection on a two-lane, undivided road with smooth pavement and light to moderate traffic. A white sedan ahead in the same lane is slowing and starting a right turn at the intersection. A large city bus is stopped in a pull-out along the left curb and stays out of the lane. Several pedestrians are waiting near the crosswalk on the right corner, and a silver wagon is parked along the right curb before the junction.", "hazard_reasoning": "The main risk is the white sedan directly ahead, which is reducing speed as it makes a right turn at the intersection. Its slowdown could force the ego driver to brake to keep a safe gap and prevent a rear-end collision."}
{"id": "train_09885", "split": "train", "clip_key": "2020-0218-103119_002936_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "002936"}, "frames": ["2020-0218-103119_002936_movie_t-3.jpg", "2020-0218-103119_002936_movie_t-2.jpg", "2020-0218-103119_002936_movie_t-1.jpg", "2020-0218-103119_002936_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming vehicle.", "environment_perception": "A straight urban boulevard with several lanes in each direction runs between tall buildings, divided by a striped buffer and low hedges in the median. The road surface looks smooth and traffic is light and moving steadily. A black car ahead in the ego lane keeps a constant speed and appears to be setting the flow. To the right, in the oncoming lanes, a light van and a black sedan are coming toward the ego vehicle while staying in their lanes and remaining separated by the median. On the left edge, a cyclist travels alongside the fenced roadside without entering the traffic lanes. Sun glare from the upper left slightly reduces visibility.", "hazard_reasoning": "The key risk is the black sedan approaching in the oncoming lane toward the ego car. Because it is coming head-on, it presents a collision possibility, so the driver should yield."}
{"id": "train_09886", "split": "train", "clip_key": "2020-0218-103119_003119_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "003119"}, "frames": ["2020-0218-103119_003119_movie_t-3.jpg", "2020-0218-103119_003119_movie_t-2.jpg", "2020-0218-103119_003119_movie_t-1.jpg", "2020-0218-103119_003119_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to black hatchback", "environment_perception": "A multi-lane urban arterial with smooth pavement passes between tall buildings, with a painted chevron divider and low hedges splitting the opposing traffic. The road is lightly traveled and traffic is flowing normally. Ahead on the left, a dark taxi in the neighboring same-direction lane keeps pace and continues straight. In the ego lane, a white sedan remains ahead at a steady speed and defines the following distance. Farther ahead in the same lane, a small truck continues toward the next intersection and could slow the flow. On the far right edge near the guardrail, a black hatchback is moving toward the ego vehicle.", "hazard_reasoning": "The black hatchback on the right is traveling toward the ego car, creating the main risk in the scene. Because it is approaching from the roadside/right side and could enter the ego lane without much warning, the safest response is to yield and avoid a possible collision."}
{"id": "train_09887", "split": "train", "clip_key": "2020-0226-140503_014990_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "014990"}, "frames": ["2020-0226-140503_014990_movie_t-3.jpg", "2020-0226-140503_014990_movie_t-2.jpg", "2020-0226-140503_014990_movie_t-1.jpg", "2020-0226-140503_014990_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the approaching van", "environment_perception": "A light-traffic urban two-way road with one lane in each direction approaches a signalized intersection on dry, clear pavement. The ego vehicle is moving forward under a green signal. A black van in the opposite lane is coming toward the ego vehicle from the right side of the intersection and continues straight within its lane. Farther ahead in the ego lane, a white box van is traveling away past the crosswalk at a steady pace. On the left near the curb, two cyclists approach the corner and begin entering the zebra crossing as the ego car nears the intersection.", "hazard_reasoning": "The main risk is the oncoming black van, which is closing in from the right while staying in its lane. The ego driver should yield and keep clear to prevent a possible collision."}
{"id": "train_09888", "split": "train", "clip_key": "2020-0203-114632_075606_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "075606"}, "frames": ["2020-0203-114632_075606_movie_t-3.jpg", "2020-0203-114632_075606_movie_t-2.jpg", "2020-0203-114632_075606_movie_t-1.jpg", "2020-0203-114632_075606_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "A broad urban multi-lane road leads into a signalized intersection with well-marked lanes and a smooth surface, while traffic appears moderate and slows near the junction. In front of the ego vehicle, a white minivan is turning left through the intersection and sets the pace of travel. On the right, a white van in the neighboring lane keeps going straight and does not interfere with the turning movement. Farther ahead in the through lanes, a construction truck is moving slowly, adding to the cautious traffic flow. Traffic lights are present, though their signal state is not clearly readable.", "hazard_reasoning": "The main hazard is the white minivan ahead making a left turn in the ego lane. The safest response is to stay behind it at a controlled distance so it can complete the turn without creating a cut-in risk."}
{"id": "train_09889", "split": "train", "clip_key": "2020-0203-114632_075606_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "075606"}, "frames": ["2020-0203-114632_075606_movie_t-3.jpg", "2020-0203-114632_075606_movie_t-2.jpg", "2020-0203-114632_075606_movie_t-1.jpg", "2020-0203-114632_075606_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a broad urban arterial leading into a signalized intersection, with marked lanes, smooth roadway, and moderate traffic slowing as it nears the junction. In front of the ego vehicle, a white minivan is turning left through the intersection and is the main influence on the driving path. A white van in the lane to the right keeps going straight and remains parallel without moving into the ego lane. Farther ahead, a construction truck is also progressing slowly in the through lanes. Traffic signals are visible, though their color cannot be clearly confirmed.", "hazard_reasoning": "The white minivan ahead is completing a left turn in the ego lane. The safest response is to stay behind it with enough space, since its turning movement could affect the ego vehicle’s path."}
{"id": "train_09890", "split": "train", "clip_key": "2020-0213-143552_010761_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "010761"}, "frames": ["2020-0213-143552_010761_movie_t-3.jpg", "2020-0213-143552_010761_movie_t-2.jpg", "2020-0213-143552_010761_movie_t-1.jpg", "2020-0213-143552_010761_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming vehicle from the right.", "environment_perception": "The scene shows a two-way urban road with one lane in each direction, no median, and a zebra crossing at an intersection. The ego vehicle is nearing the junction while traffic remains light and steady. A white sedan in the opposing lane on the right side of the intersection is moving straight toward the ego vehicle. Farther ahead, a white box van also comes through the oncoming lane near the crosswalk, while a dark car in the ego lane continues away through the intersection.", "hazard_reasoning": "The main concern is the white sedan approaching from the right in the opposite direction. Since it is moving toward the ego vehicle at the intersection, it could enter the path of travel and create a collision risk, so the driver should yield."}
{"id": "train_09891", "split": "train", "clip_key": "2020-0213-143552_010761_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "010761"}, "frames": ["2020-0213-143552_010761_movie_t-3.jpg", "2020-0213-143552_010761_movie_t-2.jpg", "2020-0213-143552_010761_movie_t-1.jpg", "2020-0213-143552_010761_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming vehicle from the right.", "environment_perception": "The scene shows a straight urban road with one lane in each direction, no median, and a zebra crossing at an intersection. The ego vehicle is moving toward the junction while traffic remains light and steady. A white sedan in the opposing lane is visible on the right side of the intersection, heading straight toward the ego car. A white box van farther ahead in the oncoming lane also continues through the junction without leaving its lane, and a dark car in the ego lane moves away ahead.", "hazard_reasoning": "The main concern is the white sedan approaching from the right in the opposite direction. Because it is entering the intersection on a path that could intersect with the ego vehicle, it presents a potential conflict point. The appropriate response is to yield and proceed cautiously to avoid a collision."}
{"id": "train_09892", "split": "train", "clip_key": "2020-0203-114632_075606_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "075606"}, "frames": ["2020-0203-114632_075606_movie_t-3.jpg", "2020-0203-114632_075606_movie_t-2.jpg", "2020-0203-114632_075606_movie_t-1.jpg", "2020-0203-114632_075606_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a broad urban arterial leading into a signalized intersection, with clear lane lines and dry, smooth pavement. Traffic is moderate and appears to slow as it nears the junction. In the ego lane, a white minivan ahead is turning left through the intersection and is the main vehicle influencing the car’s path. A white van in the neighboring right lane continues straight and stays parallel without moving into the ego lane. Farther ahead, a construction truck is also moving slowly in the through lanes. The traffic lights are visible, though their color cannot be clearly confirmed.", "hazard_reasoning": "The key hazard is the white minivan ahead making a left turn in the ego lane. The safest response is to stay behind it and keep a proper gap so the vehicle is not cut off as it completes the turn."}
{"id": "train_09893", "split": "train", "clip_key": "2020-0213-143552_010761_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "010761"}, "frames": ["2020-0213-143552_010761_movie_t-3.jpg", "2020-0213-143552_010761_movie_t-2.jpg", "2020-0213-143552_010761_movie_t-1.jpg", "2020-0213-143552_010761_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming vehicle from the right.", "environment_perception": "The scene shows an urban two-way road with a single lane in each direction, no median, and a smooth surface. The ego vehicle is approaching an intersection marked by a zebra crossing while traffic remains light and moving steadily. A white sedan in the opposing lane is visible on the right side of the intersection, heading toward the ego vehicle and continuing straight. A white box van farther along the oncoming lane, just beyond the crosswalk, is also moving through the junction within its lane. In the ego lane, a dark car is traveling away through the intersection at a steady speed.", "hazard_reasoning": "The main concern is the white sedan approaching from the right in the opposite direction. Because it is moving toward the ego vehicle near the intersection, it could intersect the ego path, so the driver should yield to prevent a possible collision."}
{"id": "train_09894", "split": "train", "clip_key": "2020-0226-140503_063255_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "063255"}, "frames": ["2020-0226-140503_063255_movie_t-3.jpg", "2020-0226-140503_063255_movie_t-2.jpg", "2020-0226-140503_063255_movie_t-1.jpg", "2020-0226-140503_063255_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "This is a light-traffic urban two-way road beside a railway viaduct, bending slightly to the right with no median, and the wet surface suggests it has recently rained. Ahead of the ego vehicle, a gray hatchback is making a turn near a small junction and sits close to the center line. A pedestrian holding a transparent umbrella is on the left sidewalk by the railing, not entering the road, while another pedestrian remains on the right sidewalk near the storefronts. No notable signals or signs stand out.", "hazard_reasoning": "The main concern is the gray hatchback turning ahead of the ego car in the intersection area. Because it is moving unexpectedly across the path, it could create a conflict and leave less time to react. The appropriate response is to reduce speed, keep distance, and be ready for any sudden movement."}
{"id": "train_09895", "split": "train", "clip_key": "2020-0226-140503_063255_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "063255"}, "frames": ["2020-0226-140503_063255_movie_t-3.jpg", "2020-0226-140503_063255_movie_t-2.jpg", "2020-0226-140503_063255_movie_t-1.jpg", "2020-0226-140503_063255_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "This is an urban two-way road beside a railway viaduct, bending slightly to the right with no median divider, and the wet surface indicates recent rain; overall traffic is sparse. Ahead of the ego vehicle, a gray hatchback is in the middle of turning at a small intersection, positioned near the center line. On the left sidewalk, a pedestrian carrying a transparent umbrella stays by the railing and remains out of the roadway. Another pedestrian is visible on the right sidewalk near the storefronts and does not enter the street. No notable signals or signs stand out.", "hazard_reasoning": "The main concern is the gray hatchback making a turn in front of the ego car at the intersection. Because it is moving across the driving path, it can create a conflict and leave less time to respond. The appropriate action is to reduce speed, keep distance, and stay ready for any sudden movement."}
{"id": "train_09896", "split": "train", "clip_key": "2020-0226-140503_063255_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "063255"}, "frames": ["2020-0226-140503_063255_movie_t-3.jpg", "2020-0226-140503_063255_movie_t-2.jpg", "2020-0226-140503_063255_movie_t-1.jpg", "2020-0226-140503_063255_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "The scene shows a light-traffic urban two-way road beside a railway viaduct, bending slightly to the right with no central divider, and the wet surface indicates recent rain. Ahead of the ego vehicle, a gray hatchback is turning within the intersection area near a small junction, positioned close to the center line. On the left sidewalk, a pedestrian holding a clear umbrella stays beside the railing and does not enter the roadway. Another pedestrian remains on the right sidewalk near the storefronts. No notable signals or warning signs stand out.", "hazard_reasoning": "The main concern is the gray hatchback turning in the intersection ahead of the ego car. Because it is moving across the driving path, it could lead to a brief conflict and leave less time to respond. The appropriate reaction is to reduce speed and keep a safe gap while watching for further movement."}
{"id": "train_09897", "split": "train", "clip_key": "2020-0204-150838_018850_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "018850"}, "frames": ["2020-0204-150838_018850_movie_t-3.jpg", "2020-0204-150838_018850_movie_t-2.jpg", "2020-0204-150838_018850_movie_t-1.jpg", "2020-0204-150838_018850_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "A divided urban arterial with offices and trees extends ahead under cloudy skies, and the pavement appears smooth with light, steady traffic. A white van is traveling directly in front of the ego vehicle in the same lane at a stable pace and comfortable gap. To the right, a black sedan is slightly ahead and continues straight without moving toward the ego lane. To the left, a dark taxi also moves forward at a comparable speed and stays in its lane. A planted median and roadside greenery separate the roadway edges, and there are no notable signals or speed signs in view.", "hazard_reasoning": "The main visible concern is the white van immediately ahead in the ego lane. Since the lead vehicle could slow or brake unexpectedly, the appropriate response is to keep a safe following distance and stay prepared to match its speed."}
{"id": "train_09898", "split": "train", "clip_key": "2020-0228-102841_023032_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "023032"}, "frames": ["2020-0228-102841_023032_movie_t-3.jpg", "2020-0228-102841_023032_movie_t-2.jpg", "2020-0228-102841_023032_movie_t-1.jpg", "2020-0228-102841_023032_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the white sedan turning", "environment_perception": "The scene shows a broad urban multi-lane arterial bending to the right through a large intersection with painted channelizing islands and clear pavement, while traffic moves steadily. A white sedan ahead in the ego lane is making a right turn and pulling away along the curve, briefly setting the pace as it exits the junction. On the right, a red cargo truck in the neighboring lane keeps pace around the bend and stays alongside the ego vehicle. Farther right, a small white kei truck continues slowly past the splitter island in its own lane, staying ahead and not drifting into the ego path. Signal heads are visible overhead, but their indications cannot be seen.", "hazard_reasoning": "The main concern is the white sedan ahead, which is turning right and moving away in the ego lane. It could still cross the ego vehicle's path as it finishes the turn, so it warrants caution."}
{"id": "train_09899", "split": "train", "clip_key": "2020-0228-102841_023032_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "023032"}, "frames": ["2020-0228-102841_023032_movie_t-3.jpg", "2020-0228-102841_023032_movie_t-2.jpg", "2020-0228-102841_023032_movie_t-1.jpg", "2020-0228-102841_023032_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the white sedan turning", "environment_perception": "A broad urban arterial bends to the right through a large intersection with painted islands and a smooth road surface, while traffic appears moderate and moving steadily. In the ego lane, a white sedan ahead is negotiating a right turn and pulling away through the curve, temporarily setting the pace as it exits the junction. On the right side, a red cargo truck in the neighboring lane continues around the bend at roughly the same speed and stays beside the ego vehicle. Farther right, a small white kei truck moves slowly beyond the splitter island and remains ahead without drifting into the lane. Overhead signal lights are visible, but their indications cannot be seen.", "hazard_reasoning": "The main concern is the white sedan ahead, which is turning right and moving away from the ego vehicle in the same lane. It could still cross the ego path while finishing the turn, so it should be watched carefully."}
{"id": "train_09900", "split": "train", "clip_key": "2020-0204-150838_018850_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "018850"}, "frames": ["2020-0204-150838_018850_movie_t-3.jpg", "2020-0204-150838_018850_movie_t-2.jpg", "2020-0204-150838_018850_movie_t-1.jpg", "2020-0204-150838_018850_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "A divided urban arterial with multiple lanes stretches past office buildings and trees beneath cloudy skies. The road surface is smooth, and traffic is light to moderate and moving evenly. In front of the ego vehicle, a white van continues straight and maintains a steady pace at a comfortable distance. To the right, a black sedan is slightly ahead and remains in its lane without drifting over. To the left, a dark taxi also advances at a similar speed and stays properly positioned. A planted median and roadside hedges mark the separation between directions and the road edges, with no clear signs or signals standing out.", "hazard_reasoning": "The main visible concern is the white van ahead in the ego lane. Since a lead vehicle can slow or brake unexpectedly, the safest response is to keep a proper following distance and be ready to adjust speed."}
{"id": "train_09901", "split": "train", "clip_key": "2020-0228-102841_023032_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "023032"}, "frames": ["2020-0228-102841_023032_movie_t-3.jpg", "2020-0228-102841_023032_movie_t-2.jpg", "2020-0228-102841_023032_movie_t-1.jpg", "2020-0228-102841_023032_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the white sedan turning", "environment_perception": "The scene shows a broad urban multi-lane road bending to the right through a large junction with painted islands and clear pavement, with moderate traffic moving steadily. A white sedan ahead in the ego lane is completing a right turn and pulling away through the curve, briefly setting the pace as it exits the junction. On the right, a red cargo truck in the neighboring lane continues around the bend at about the same speed and stays alongside. Farther right, a small white kei truck moves slowly beyond the splitter island and remains ahead without drifting over. Signal heads are visible overhead, but their lights cannot be seen.", "hazard_reasoning": "The main concern is the white sedan in the ego lane as it turns right and moves away. It could continue across the ego path while finishing the turn, so it should be watched carefully."}
{"id": "train_09902", "split": "train", "clip_key": "2020-0203-114632_075586_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "075586"}, "frames": ["2020-0203-114632_075586_movie_t-3.jpg", "2020-0203-114632_075586_movie_t-2.jpg", "2020-0203-114632_075586_movie_t-1.jpg", "2020-0203-114632_075586_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A signalized urban intersection lies ahead on a multi-lane two-way road with smooth pavement and no median, and traffic appears moderate with vehicles moving steadily in the opposite direction. A gray van ahead in the ego lane is slowing and starting a left turn at the junction, which affects the ego vehicle’s progress. In the right lane ahead, a silver van proceeds straight through the intersection and does not interfere with the ego lane. Several oncoming trucks and vans pass through the junction on the far side without conflict, while a pedestrian remains still at the left corner behind the guardrail near the crosswalk. Traffic lights and roadside signs are visible.", "hazard_reasoning": "The main hazard is the gray van directly ahead in the ego lane, which is decelerating as it makes a left turn at the intersection. Because it is slowing in front of the ego vehicle, the driver may need to brake suddenly to avoid a collision."}
{"id": "train_09903", "split": "train", "clip_key": "2020-0131-103016_039084_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "039084"}, "frames": ["2020-0131-103016_039084_movie_t-3.jpg", "2020-0131-103016_039084_movie_t-2.jpg", "2020-0131-103016_039084_movie_t-1.jpg", "2020-0131-103016_039084_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the oncoming SUV", "environment_perception": "The scene shows an urban multi-lane intersection without a center median, with the ego vehicle paused in a right-turn lane on mostly smooth pavement with a few patches. A black SUV is coming toward the ego in the opposing lane ahead-right and remains in the path that would conflict with the turn. Behind it, two medium trucks and several cars continue through the oncoming lanes, indicating steady traffic. A white sedan is also stopped near the right side of the intersection, angled as if preparing to turn, and overhead signals are visible across the far side.", "hazard_reasoning": "The main risk is the black SUV traveling toward the ego vehicle in the oncoming lane while the ego is waiting to turn right. Completing the turn would bring the ego path into conflict with that approaching SUV, so a collision could occur if the SUV does not slow or yield."}
{"id": "train_09904", "split": "train", "clip_key": "2020-0204-150838_018850_movie", "source": {"subset": "drama", "scenario": "2020-0204-150838", "frame": "018850"}, "frames": ["2020-0204-150838_018850_movie_t-3.jpg", "2020-0204-150838_018850_movie_t-2.jpg", "2020-0204-150838_018850_movie_t-1.jpg", "2020-0204-150838_018850_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a divided urban arterial with multiple lanes, passing offices and trees beneath cloudy skies. Traffic is light to moderate and moving smoothly on clean pavement. A white van is directly ahead in the ego lane and appears to be traveling steadily at a moderate following gap. To the right, a black sedan is slightly ahead and continues straight without drifting toward the ego lane. To the left, a dark taxi also moves forward in its own lane at about the same pace. A planted median and roadside hedges separate the roadway, and there are no clear traffic signals or speed signs in view.", "hazard_reasoning": "The main relevant vehicle is the white van ahead in the ego lane. Since it is directly in front, it could slow or brake unexpectedly, so the safest response is to keep a proper following distance and be ready to adjust speed."}
{"id": "train_09905", "split": "train", "clip_key": "2020-0131-103016_039084_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "039084"}, "frames": ["2020-0131-103016_039084_movie_t-3.jpg", "2020-0131-103016_039084_movie_t-2.jpg", "2020-0131-103016_039084_movie_t-1.jpg", "2020-0131-103016_039084_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the oncoming SUV", "environment_perception": "At a multi-lane urban intersection with no center median, the ego vehicle is waiting in a right-turn position on a road surface that is mostly smooth with some patches, and traffic is fairly steady. A black SUV is coming straight toward the ego vehicle in the oncoming lane ahead-right, blocking the right-turn opportunity. Behind it, two medium trucks and several cars continue through the oncoming lanes, adding to the delay. A white sedan is also stopped near the right curb line, angled as if preparing to turn, and overhead signals are visible across the far side.", "hazard_reasoning": "The main concern is the black SUV approaching in the oncoming lane while the ego vehicle is poised to turn right. If the driver turns now, the path would cross the SUV’s line of travel, creating a collision risk unless the SUV slows or yields."}
{"id": "train_09906", "split": "train", "clip_key": "2020-0203-114632_075586_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "075586"}, "frames": ["2020-0203-114632_075586_movie_t-3.jpg", "2020-0203-114632_075586_movie_t-2.jpg", "2020-0203-114632_075586_movie_t-1.jpg", "2020-0203-114632_075586_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "The scene shows an urban two-way multi-lane road leading into a signalized intersection with a flat roadway and no central median; traffic volume is moderate and vehicles in the opposite direction are moving steadily. A gray van ahead in the ego lane is slowing and starting a left turn at the intersection, which affects the ego vehicle’s forward progress. To the right, a silver van in the adjacent lane continues straight through the junction without entering the ego lane. Several oncoming trucks and vans pass through the intersection on the far side, with no conflict to the left-side approach. A pedestrian is standing still near the left corner behind the guardrail by the crosswalk. Traffic lights and road signs are visible above and around the intersection.", "hazard_reasoning": "The main hazard is the gray van directly ahead in the ego lane, because it is decelerating as it turns left at the intersection. This turning movement can force the driver to slow down or brake sooner than expected to avoid a rear-end collision."}
{"id": "train_09907", "split": "train", "clip_key": "2020-0203-114632_075586_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "075586"}, "frames": ["2020-0203-114632_075586_movie_t-3.jpg", "2020-0203-114632_075586_movie_t-2.jpg", "2020-0203-114632_075586_movie_t-1.jpg", "2020-0203-114632_075586_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "The scene shows an urban two-way multilane road leading into a signalized intersection with smooth pavement and no median. Traffic is moderate, with vehicles moving steadily in the opposite direction. A gray van ahead in the ego lane is slowing down and starting a left turn at the intersection, which limits the ego vehicle’s progress. In the lane to the right, a silver van continues straight through the junction without entering the ego lane. Several oncoming trucks and vans pass through the intersection on the right side with no conflict. A pedestrian stands still behind the guardrail on the left corner near the crosswalk. Traffic lights and roadside signs are visible.", "hazard_reasoning": "The main concern is the gray van directly ahead in the ego lane, which is slowing as it turns left at the intersection. Its deceleration could force the driver to brake suddenly to avoid contact."}
{"id": "train_09908", "split": "train", "clip_key": "2020-0131-103016_039084_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "039084"}, "frames": ["2020-0131-103016_039084_movie_t-3.jpg", "2020-0131-103016_039084_movie_t-2.jpg", "2020-0131-103016_039084_movie_t-1.jpg", "2020-0131-103016_039084_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the oncoming SUV", "environment_perception": "The scene shows an urban multi-lane intersection without a divider, where the ego vehicle is paused in a right-turn position on a roadway that is mostly smooth with some patched areas. Traffic is moderate. A black SUV is coming straight toward the ego vehicle in the oncoming lane ahead-right, which blocks the planned right turn. Behind it, two medium trucks and a few cars continue in the oncoming lanes, adding to the steady flow. A white sedan sits stopped near the right side of the intersection, angled as if preparing to turn, and overhead signals are visible across the far side.", "hazard_reasoning": "The main hazard is the black SUV advancing in the opposing lane while the ego vehicle waits to turn right. That turn would cross the SUV’s path, so there is a potential collision if the SUV does not slow down or yield in time."}
{"id": "train_09909", "split": "train", "clip_key": "2020-0129-105040_061829_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061829"}, "frames": ["2020-0129-105040_061829_movie_t-3.jpg", "2020-0129-105040_061829_movie_t-2.jpg", "2020-0129-105040_061829_movie_t-1.jpg", "2020-0129-105040_061829_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of white van", "environment_perception": "The scene shows a narrow two-way residential street with clean pavement, red-painted shoulders, and no center median, with very little traffic. A white van is visible ahead on the right side, coming toward the ego vehicle in the opposing lane. On the left sidewalk, a pedestrian moves away from the camera near the curb and bollards, remaining outside the road. Parked bicycles line the left edge but stay stationary and do not interfere with the lane.", "hazard_reasoning": "The main risk is the approaching white van traveling toward the ego vehicle on the right side of the roadway. The driver should keep space and stay alert for any unexpected movement from the van while continuing forward."}
{"id": "train_09910", "split": "train", "clip_key": "2020-0129-105040_061829_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061829"}, "frames": ["2020-0129-105040_061829_movie_t-3.jpg", "2020-0129-105040_061829_movie_t-2.jpg", "2020-0129-105040_061829_movie_t-1.jpg", "2020-0129-105040_061829_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of white van", "environment_perception": "The scene shows a narrow two-way residential street with red-painted shoulders, no median, and clear pavement. Traffic is sparse. A white van is coming toward the ego vehicle from ahead on the right side, occupying the oncoming lane. On the left side, a pedestrian walks away near the curb by short bollards and remains on the sidewalk. Parked bicycles line the left edge but stay stationary and do not enter the driving path.", "hazard_reasoning": "The main concern is the white van approaching in the opposite direction on the right side of the road. The ego driver should keep watch for it, preserve enough lateral space, and be ready for any unexpected movement."}
{"id": "train_09911", "split": "train", "clip_key": "titan_clip_1156_000540_movie", "source": {"subset": "titan", "scenario": "clip_1156", "frame": "000540"}, "frames": ["titan_clip_1156_000540_movie_t-3.jpg", "titan_clip_1156_000540_movie_t-2.jpg", "titan_clip_1156_000540_movie_t-1.jpg", "titan_clip_1156_000540_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of turning vehicle", "environment_perception": "The scene shows an urban two-way road with several lanes and no center divider. The ego vehicle is moving in the left lane toward an intersection on a smooth road with light traffic. A small three-wheeled delivery scooter is ahead in the same lane, traveling slowly and setting the pace for the ego vehicle. Farther ahead in the intersection, a gray hatchback is making a left turn and moving away from the ego car, clearing the way. On the right side, oncoming vehicles continue past in their own lanes without conflict. A worker in high-visibility clothing stands on the right sidewalk near orange cones that mark a small curbside work area.", "hazard_reasoning": "The main concern is the gray hatchback turning left in the intersection. Since it is crossing through the ego vehicle's path while turning away, it could create a collision risk if the driver does not watch it closely. The hazard is present but not immediate, so it calls for caution rather than urgent braking."}
{"id": "train_09912", "split": "train", "clip_key": "2020-0129-105040_061829_movie", "source": {"subset": "drama", "scenario": "2020-0129-105040", "frame": "061829"}, "frames": ["2020-0129-105040_061829_movie_t-3.jpg", "2020-0129-105040_061829_movie_t-2.jpg", "2020-0129-105040_061829_movie_t-1.jpg", "2020-0129-105040_061829_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of white van", "environment_perception": "This is a narrow two-way residential street with red-painted road edges, no center divider, and a clear straight path ahead. Traffic is sparse. A white van is coming toward the ego vehicle ahead on the right side, occupying the oncoming lane. On the left sidewalk near the curb, a pedestrian is walking away from the camera next to short bollards and remains out of the roadway. Several bicycles are parked along the left edge and stay stationary without intruding into the driving lane.", "hazard_reasoning": "The main risk is the white van approaching in the opposite direction on the right side of the road. The ego driver should keep a safe gap and stay alert for any unexpected movement from the van while continuing forward."}
{"id": "train_09913", "split": "train", "clip_key": "titan_clip_1156_000540_movie", "source": {"subset": "titan", "scenario": "clip_1156", "frame": "000540"}, "frames": ["titan_clip_1156_000540_movie_t-3.jpg", "titan_clip_1156_000540_movie_t-2.jpg", "titan_clip_1156_000540_movie_t-1.jpg", "titan_clip_1156_000540_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of turning vehicle", "environment_perception": "The scene shows an urban two-way road with multiple lanes and no divider, and the ego vehicle is moving in the left lane toward an intersection on a clear, lightly trafficked roadway. A small three-wheeled delivery scooter is traveling ahead in the same lane at low speed, setting the ego vehicle’s pace. Farther ahead in the intersection, a gray hatchback is making a left turn away from the ego vehicle and is clearing the way. On the right side, oncoming vehicles continue past in their lanes without affecting the ego car, while a worker in high-visibility clothing stands near orange cones on the right sidewalk by a small curbside work zone.", "hazard_reasoning": "The main hazard is the gray hatchback turning left in the intersection. Since it is moving across the ego vehicle’s path while turning away, the driver should stay alert to avoid any possible collision."}
{"id": "train_09914", "split": "train", "clip_key": "titan_clip_1156_000540_movie", "source": {"subset": "titan", "scenario": "clip_1156", "frame": "000540"}, "frames": ["titan_clip_1156_000540_movie_t-3.jpg", "titan_clip_1156_000540_movie_t-2.jpg", "titan_clip_1156_000540_movie_t-1.jpg", "titan_clip_1156_000540_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Be aware of turning vehicle", "environment_perception": "The scene shows an urban two-way road with several lanes and no center barrier, and the ego vehicle is traveling in the left lane toward an intersection on a clear, lightly trafficked pavement. A small three-wheeled delivery scooter is moving slowly ahead in the same lane, setting the pace for the ego vehicle. Farther ahead in the intersection, a gray hatchback is completing a left turn away from the ego car and no longer blocks the lane. On the right side, oncoming vehicles move normally in their own lanes, while a high-visibility worker stands near orange cones by the right sidewalk at a small curbside work zone.", "hazard_reasoning": "The main concern is the gray hatchback in the intersection, which is turning left across the ego vehicle’s path before clearing away. Although it is moving away and the risk is limited, the driver should still watch its motion closely to avoid any possible conflict."}
{"id": "train_09915", "split": "train", "clip_key": "2020-0127-132751_053526_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "053526"}, "frames": ["2020-0127-132751_053526_movie_t-3.jpg", "2020-0127-132751_053526_movie_t-2.jpg", "2020-0127-132751_053526_movie_t-1.jpg", "2020-0127-132751_053526_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the silver hatchback ahead", "environment_perception": "The scene shows a multi-lane urban road bordered by mid-rise buildings, with a guardrail lining the right side. Traffic is flowing steadily on smooth pavement. A dark sedan is traveling straight ahead in the ego lane at a steady pace. In the left lane, a silver hatchback is moving alongside the flow toward a red traffic signal, and a black kei van farther ahead in that lane is moving a bit slower, limiting room for any left-lane maneuver.", "hazard_reasoning": "The main object of attention is the silver hatchback in the left lane. Because it is approaching the red light and sharing limited space with the slower van ahead, it could reduce speed or shift position. The driver should keep monitoring it, but the immediate risk remains low."}
{"id": "train_09916", "split": "train", "clip_key": "2020-0205-103411_019574_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "019574"}, "frames": ["2020-0205-103411_019574_movie_t-3.jpg", "2020-0205-103411_019574_movie_t-2.jpg", "2020-0205-103411_019574_movie_t-1.jpg", "2020-0205-103411_019574_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "This is a multi-lane urban roadway with smooth asphalt and a metal fence on the right, leading toward a signalized intersection with moderate traffic. Directly ahead in the ego lane, a black van is moving up to the junction and beginning a right turn while a green right-turn arrow is shown, so it momentarily controls the ego vehicle’s pace. A small white bus is ahead-left, traveling straight at a steady speed in its lane and narrowing the available side space. Farther ahead on the right, a white box truck also continues straight and stays out of the ego lane. The overhead lights show the green right-turn indication, and there are no abnormal obstacles.", "hazard_reasoning": "The main concern is the black van in front making the right turn under the green arrow. Since it is accelerating and turning away, it should clear the lane shortly, making this a low-risk situation where the driver should begin moving to keep with traffic and avoid unnecessary delay."}
{"id": "train_09917", "split": "train", "clip_key": "2020-0127-132751_053526_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "053526"}, "frames": ["2020-0127-132751_053526_movie_t-3.jpg", "2020-0127-132751_053526_movie_t-2.jpg", "2020-0127-132751_053526_movie_t-1.jpg", "2020-0127-132751_053526_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the silver hatchback ahead", "environment_perception": "This is a multi-lane urban road bordered by mid-rise buildings, with a guardrail on the right side and smooth pavement. Traffic is flowing steadily. A dark sedan is directly in front in the ego lane and appears to be maintaining speed. In the left lane, a silver hatchback is traveling ahead at a similar pace toward a red light, while a black kei van farther ahead in that lane is moving a bit slower and leaves less room for a lane change.", "hazard_reasoning": "The main concern is the silver hatchback in the left lane. As it nears the red light, it could slow down or shift position, so it should be watched closely for any change in movement."}
{"id": "train_09918", "split": "train", "clip_key": "2020-0205-103411_019574_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "019574"}, "frames": ["2020-0205-103411_019574_movie_t-3.jpg", "2020-0205-103411_019574_movie_t-2.jpg", "2020-0205-103411_019574_movie_t-1.jpg", "2020-0205-103411_019574_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "The scene shows a multi-lane urban roadway with smooth pavement and a metal fence along the right side as traffic approaches a signalized intersection. A black van directly ahead in the ego lane moves forward and starts turning right under a green right-turn arrow, effectively controlling the ego vehicle’s immediate pace. On the left ahead, a small white bus continues straight in its lane at a steady speed, leaving limited side clearance. Farther ahead on the right, a white box truck also travels straight through the intersection area and stays out of the ego lane. Overhead signals are visible and the green right-turn indication is active, with no other notable obstacles present.", "hazard_reasoning": "The main concern is the black van ahead initiating a right turn while accelerating under the green arrow. Since it is clearing the lane, it is a low-level hazard that mainly requires the driver to begin moving in time and continue with normal flow rather than stopping unnecessarily."}
{"id": "train_09919", "split": "train", "clip_key": "2020-0205-103411_019574_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "019574"}, "frames": ["2020-0205-103411_019574_movie_t-3.jpg", "2020-0205-103411_019574_movie_t-2.jpg", "2020-0205-103411_019574_movie_t-1.jpg", "2020-0205-103411_019574_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "This is an urban multilane roadway with smooth pavement and a metal fence running along the right side, approaching a signalized intersection with moderate traffic. A black van directly ahead in the ego lane is moving up to the junction and starting a right turn under a green right-turn arrow, which is the main influence on the ego vehicle's pace. On the left ahead, a small white bus travels straight in its lane at a steady speed and stays beside the ego lane with limited side space. Farther ahead on the right, a white box truck continues straight through the area and does not enter the ego lane. The traffic lights are visible and the green right-turn indication is active, with no other notable obstacles.", "hazard_reasoning": "The main concern is the black van in front of the ego car as it accelerates and turns right with the green arrow. Since it is already clearing the lane, the situation is low risk, but the driver should begin moving soon to keep up with traffic and avoid unnecessary delay."}
{"id": "train_09920", "split": "train", "clip_key": "2020-0127-132751_053526_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "053526"}, "frames": ["2020-0127-132751_053526_movie_t-3.jpg", "2020-0127-132751_053526_movie_t-2.jpg", "2020-0127-132751_053526_movie_t-1.jpg", "2020-0127-132751_053526_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of the silver hatchback ahead", "environment_perception": "The scene shows an urban arterial with two lanes in the ego direction, lined by mid-rise buildings and a guardrail on the right side. The road surface is smooth, and traffic is moderate and flowing steadily. A dark sedan is directly ahead in the ego lane, moving at a constant pace. In the left lane, a silver hatchback is traveling about the same speed toward a red light, while a black kei van farther ahead in that lane is moving a bit slower than the surrounding traffic, leaving less room for a lane change.", "hazard_reasoning": "The main concern is the silver hatchback in the left lane. As it approaches the red light, it could slow down or shift lanes, so the driver should keep watching its position and next move closely."}
{"id": "train_09921", "split": "train", "clip_key": "2020-0210-101957_009844_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "009844"}, "frames": ["2020-0210-101957_009844_movie_t-3.jpg", "2020-0210-101957_009844_movie_t-2.jpg", "2020-0210-101957_009844_movie_t-1.jpg", "2020-0210-101957_009844_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to the turning vehicle", "environment_perception": "The scene shows an urban two-way road with one lane in each direction and a solid centerline, leading up to a small intersection with a zebra crossing. The road surface is clear and traffic is light. Several pedestrians are crossing the marked crosswalk from right to left in front of the ego lane, including one pushing a cart. On the right side of the intersection, a white sedan is making a left turn and moving through the crosswalk, while another white car on the cross street continues leftward farther ahead without affecting the ego path.", "hazard_reasoning": "The main concern is the white sedan on the right as it turns left across the intersection. Its turning path may intersect the ego vehicle’s route, creating a potential conflict, so the driver should slow and yield to prevent a collision."}
{"id": "train_09922", "split": "train", "clip_key": "2020-0210-155354_010415_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "010415"}, "frames": ["2020-0210-155354_010415_movie_t-3.jpg", "2020-0210-155354_010415_movie_t-2.jpg", "2020-0210-155354_010415_movie_t-1.jpg", "2020-0210-155354_010415_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of left-turning hatchback", "environment_perception": "The scene shows an urban two-way road with one lane in each direction leading to a signalized intersection marked by zebra crosswalks and metal railings. The road surface appears smooth, and traffic density is light to moderate. Near the middle of the junction, a gray hatchback in the opposing lane starts turning left. Farther ahead, a white minivan continues straight toward the camera through the crosswalk. On the right-side corner, several pedestrians and a cyclist are waiting at the curb and remain still.", "hazard_reasoning": "The main concern is the gray hatchback, which is initiating a left turn from the oncoming lane. Because its path may cut across the ego vehicle’s route, it presents a possible conflict that may require slowing down or yielding to prevent a collision."}
{"id": "train_09923", "split": "train", "clip_key": "2020-0210-101957_009844_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "009844"}, "frames": ["2020-0210-101957_009844_movie_t-3.jpg", "2020-0210-101957_009844_movie_t-2.jpg", "2020-0210-101957_009844_movie_t-1.jpg", "2020-0210-101957_009844_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to the turning vehicle", "environment_perception": "An urban two-way, two-lane road with a solid centerline leads into a small intersection with a zebra crossing. The roadway is clear and lightly trafficked. Several pedestrians are crossing the marked crosswalk from right to left in front of the ego lane, including one person pushing a cart. On the right side of the intersection, a white sedan is making a left turn and moving through the crosswalk, with a possibility of entering the ego lane as it finishes the turn. Farther ahead on the cross street, another white car continues leftward past the junction without affecting the scene.", "hazard_reasoning": "The main hazard is the white sedan turning left from the right side of the intersection. Its turn path can intersect the ego vehicle’s route, creating a potential conflict. The driver should slow and yield to avoid a collision."}
{"id": "train_09924", "split": "train", "clip_key": "2020-0210-155354_010415_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "010415"}, "frames": ["2020-0210-155354_010415_movie_t-3.jpg", "2020-0210-155354_010415_movie_t-2.jpg", "2020-0210-155354_010415_movie_t-1.jpg", "2020-0210-155354_010415_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of left-turning hatchback", "environment_perception": "A two-way urban road with one lane in each direction leads into a signalized intersection marked by zebra crosswalks and side railings; the road surface appears clear and traffic is sparse to moderate. A gray hatchback in the opposing direction is near the middle of the intersection and starts turning left. Farther ahead, a white minivan continues straight toward the camera through the crosswalk. On the right side, a small group of pedestrians and a cyclist are waiting at the curb and remain stationary.", "hazard_reasoning": "The main concern is the gray hatchback in the oncoming lane beginning a left turn. If it continues across, it could enter the ego vehicle's path and create a potential conflict, so slowing or yielding may be needed."}
{"id": "train_09925", "split": "train", "clip_key": "2020-0210-101957_009844_movie", "source": {"subset": "drama", "scenario": "2020-0210-101957", "frame": "009844"}, "frames": ["2020-0210-101957_009844_movie_t-3.jpg", "2020-0210-101957_009844_movie_t-2.jpg", "2020-0210-101957_009844_movie_t-1.jpg", "2020-0210-101957_009844_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to the turning vehicle", "environment_perception": "This is an urban two-way road with two lanes, a solid centerline, and a small intersection with a zebra crossing ahead. The roadway looks clear and dry. Multiple pedestrians are crossing the marked crosswalk from right to left in front of the ego lane, and one of them is pushing a cart. On the right side of the intersection, a white sedan is making a left turn and moving through the crosswalk, with a possibility of entering the ego lane as it finishes the turn. Another white car is visible farther ahead on the cross street, traveling leftward past the junction without affecting the scene.", "hazard_reasoning": "The main hazard is the white sedan on the right side of the intersection performing a left turn. Because its path may cross into the ego vehicle’s lane, it creates a potential conflict point ahead. The safest response is to yield and let the turning vehicle complete its maneuver to avoid a collision."}
{"id": "train_09926", "split": "train", "clip_key": "2020-0210-155354_010415_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "010415"}, "frames": ["2020-0210-155354_010415_movie_t-3.jpg", "2020-0210-155354_010415_movie_t-2.jpg", "2020-0210-155354_010415_movie_t-1.jpg", "2020-0210-155354_010415_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Be aware of left-turning hatchback", "environment_perception": "The scene shows a signalized urban two-way road with one lane in each direction, zebra crosswalks, and metal railings along the sides. Road conditions appear clear and traffic is light to moderate. A gray hatchback approaching from ahead is starting a left turn near the middle of the intersection. A white minivan farther forward continues straight toward the camera in the opposite lane across the crosswalk. On the right corner, a few pedestrians and a cyclist are waiting still at the curb beside the crossing.", "hazard_reasoning": "The main concern is the gray hatchback turning left from the oncoming lane. Because it is moving unexpectedly across the intersection, it could enter the ego vehicle's path and create a need to slow down or yield to prevent a collision."}
{"id": "train_09927", "split": "train", "clip_key": "2020-0228-150133_000165_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "000165"}, "frames": ["2020-0228-150133_000165_movie_t-3.jpg", "2020-0228-150133_000165_movie_t-2.jpg", "2020-0228-150133_000165_movie_t-1.jpg", "2020-0228-150133_000165_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "Ahead is an urban two-way intersection with a broad zebra crossing and a planted median island; the surface looks clear and traffic is moving moderately as the roadway divides left and right. A white van in the right lane is stopped near the split, seemingly waiting to turn left and occupying that lane. Two box trucks traveling in the same direction continue slowly through the junction in the middle and left lanes. Pedestrians are gathered on both sides of the crosswalk and on the island, apparently waiting to cross. A no right turn sign is visible on the right sidewalk.", "hazard_reasoning": "The main concern is the white van halted in the right lane while preparing to turn left. This sudden stop can force following traffic to slow down, so maintaining distance and staying behind it is the safest response to reduce rear-end risk."}
{"id": "train_09928", "split": "train", "clip_key": "2020-0228-150133_000165_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "000165"}, "frames": ["2020-0228-150133_000165_movie_t-3.jpg", "2020-0228-150133_000165_movie_t-2.jpg", "2020-0228-150133_000165_movie_t-1.jpg", "2020-0228-150133_000165_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "Ahead is an urban two-way junction with a broad zebra crossing and a planted median island, with the roadway splitting left and right. A white van in the right lane has stopped near the split and appears to be preparing a left turn, leaving that lane blocked. Two box trucks traveling in the same direction continue slowly through the intersection in the middle and left lanes. Pedestrians are gathered on both sides of the crosswalk and on the island, waiting to cross. A no right turn sign is visible on the right sidewalk.", "hazard_reasoning": "The main concern is the white van that has come to a stop in the right lane while waiting to turn left. This sudden stop creates a need to keep a safe following distance and increases the chance of a rear-end collision, so the driver should stay behind the vehicle ahead."}
{"id": "train_09929", "split": "train", "clip_key": "2020-0228-150133_000165_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "000165"}, "frames": ["2020-0228-150133_000165_movie_t-3.jpg", "2020-0228-150133_000165_movie_t-2.jpg", "2020-0228-150133_000165_movie_t-1.jpg", "2020-0228-150133_000165_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "Ahead is an urban two-way intersection with a broad zebra crossing and a planted median island in the center. The roadway surface looks clear, and traffic is moderate where the road divides left and right. A white van in the right lane has stopped near the split and appears to be preparing a left turn, leaving that lane blocked. Two box trucks traveling in the same direction continue slowly through the junction in the middle and left lanes. Pedestrians are gathered on both sides of the crosswalk and on the island, waiting to cross, and a no right turn sign is visible on the right sidewalk.", "hazard_reasoning": "The main hazard is the white van stopped in the right lane while waiting to turn left. Because it has slowed and blocked the lane, the following driver needs to keep a safe gap and proceed behind it to reduce the chance of a rear-end collision."}
{"id": "train_09930", "split": "train", "clip_key": "2020-0226-101332_049311_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "049311"}, "frames": ["2020-0226-101332_049311_movie_t-3.jpg", "2020-0226-101332_049311_movie_t-2.jpg", "2020-0226-101332_049311_movie_t-1.jpg", "2020-0226-101332_049311_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead.", "environment_perception": "A damp urban divided roadway with two lanes in the ego direction stretches past office buildings, with a metal railing median separating it from oncoming traffic; traffic is moderate and steady beneath a pedestrian overpass. In front of the ego car, a gray van continues straight ahead in the same lane. A white sedan and a green taxi are traveling in the left lane beside the ego vehicle with little change in speed or position. On the far side of the median, opposing traffic is flowing normally, and the distant signal ahead is green.", "hazard_reasoning": "The gray van is the main vehicle ahead in the ego lane. The safe action is to keep a proper gap and continue following it at its current pace to avoid a collision."}
{"id": "train_09931", "split": "train", "clip_key": "2020-0212-102546_079779_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "079779"}, "frames": ["2020-0212-102546_079779_movie_t-3.jpg", "2020-0212-102546_079779_movie_t-2.jpg", "2020-0212-102546_079779_movie_t-1.jpg", "2020-0212-102546_079779_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a wide urban multi-lane road with a central divider and light, steady traffic. A white flatbed truck ahead in the ego lane is entering an intersection and turning right across the lanes, guided by a green right-turn arrow, which briefly blocks the ego vehicle’s forward path. To the right, a black minivan is moving straight beside it at a slightly faster pace and stays within its own lane. Traffic lights and the illuminated right-turn signal are visible overhead.", "hazard_reasoning": "The main risk is the white truck making a right turn directly in front of the ego vehicle from the ego lane. Because it is crossing the path to turn, the safest response is to stay behind it and preserve distance rather than braking abruptly."}
{"id": "train_09932", "split": "train", "clip_key": "titan_clip_645_000108_movie", "source": {"subset": "titan", "scenario": "clip_645", "frame": "000108"}, "frames": ["titan_clip_645_000108_movie_t-3.jpg", "titan_clip_645_000108_movie_t-2.jpg", "titan_clip_645_000108_movie_t-1.jpg", "titan_clip_645_000108_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "This appears to be a crowded city street with one narrow lane in each direction and green-painted edges, with clear pavement and light traffic. A yellow sedan is coming toward the ego vehicle along the right side of its lane, closing distance and leaving less room to pass, while another car is farther behind it. Several pedestrians are visible near the right curb by storefronts, staying close to the roadway and limiting speed, and a woman with an umbrella plus others walk along the left sidewalk without entering the street. No traffic lights can be seen.", "hazard_reasoning": "The main threat is the yellow sedan approaching head-on from the opposite direction. Because it is moving toward the ego car in the wrong lane area, there is a collision risk, so the appropriate response is to slow down and prepare to yield space."}
{"id": "train_09933", "split": "train", "clip_key": "2020-0212-102546_079779_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "079779"}, "frames": ["2020-0212-102546_079779_movie_t-3.jpg", "2020-0212-102546_079779_movie_t-2.jpg", "2020-0212-102546_079779_movie_t-1.jpg", "2020-0212-102546_079779_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a multi-lane urban road with smooth pavement and a central divider, and traffic is sparse and moving normally. A white flatbed truck ahead in the ego lane is reaching the intersection and begins a right turn across the lanes under a green right-turn arrow, briefly narrowing the space in front of the ego vehicle. A black minivan in the adjacent right lane is beside it and continues straight a bit faster, staying in its lane and not merging. Traffic lights over the junction are visible, including the lit right-turn arrow for the truck.", "hazard_reasoning": "The main hazard is the white truck turning right across the ego lane. Because it is moving through the lane ahead of the ego car while turning, the safest response is to follow its movement and keep a steady gap, rather than braking abruptly."}
{"id": "train_09934", "split": "train", "clip_key": "2020-0226-101332_049311_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "049311"}, "frames": ["2020-0226-101332_049311_movie_t-3.jpg", "2020-0226-101332_049311_movie_t-2.jpg", "2020-0226-101332_049311_movie_t-1.jpg", "2020-0226-101332_049311_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead.", "environment_perception": "This is a divided urban arterial with two lanes moving in the ego direction, lined by office buildings and split from opposing traffic by a metal railing median. The pavement looks damp, traffic is moderate and steady, and a pedestrian overpass spans the road. A gray van is directly ahead in the ego lane and continues forward at a steady pace. In the left adjacent lane, a white sedan and a green taxi remain alongside with minimal relative movement. Beyond the median, oncoming vehicles pass smoothly in the opposite direction, and the distant signal ahead is green.", "hazard_reasoning": "The visible hazard is the oncoming traffic beyond the median, but it is separated from the ego lanes and moving normally, so the risk remains low. The gray van ahead is maintaining its lane and speed, so the proper response is to keep a safe following distance and continue behind it."}
{"id": "train_09935", "split": "train", "clip_key": "titan_clip_645_000108_movie", "source": {"subset": "titan", "scenario": "clip_645", "frame": "000108"}, "frames": ["titan_clip_645_000108_movie_t-3.jpg", "titan_clip_645_000108_movie_t-2.jpg", "titan_clip_645_000108_movie_t-1.jpg", "titan_clip_645_000108_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "The scene shows a busy city street with one narrow lane in each direction and green-painted shoulders, with clear pavement and only light traffic. A yellow sedan is coming toward the ego vehicle on the right side of its lane, leaving less lateral space, while another car follows behind it at a distance. Several pedestrians are walking along the curb on the right near storefronts, close enough to make the passage feel tighter. On the left sidewalk, a woman holding an umbrella and others are moving near the curb but remain off the road. No traffic lights are visible.", "hazard_reasoning": "The main concern is the yellow sedan approaching from ahead while positioned on the wrong side of the lane. Because it is moving toward the ego car, it creates a potential collision risk, so the driver should reduce speed and be prepared to react."}
{"id": "train_09936", "split": "train", "clip_key": "titan_clip_645_000108_movie", "source": {"subset": "titan", "scenario": "clip_645", "frame": "000108"}, "frames": ["titan_clip_645_000108_movie_t-3.jpg", "titan_clip_645_000108_movie_t-2.jpg", "titan_clip_645_000108_movie_t-1.jpg", "titan_clip_645_000108_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "The scene shows a busy urban road with one narrow lane in each direction and green-painted shoulders, with clear pavement and sparse traffic. A yellow sedan is coming toward the ego vehicle from the right side of its lane, leaving little room and closing distance, while another car follows farther behind. Along the right curb, several pedestrians move beside storefronts, some near the edge of the roadway and limiting how quickly the ego car can proceed. On the left sidewalk, a woman holding an umbrella and other pedestrians continue along the curb but remain off the road. No traffic lights are present.", "hazard_reasoning": "The main risk is the yellow sedan ahead, which is traveling toward the ego vehicle while positioned on the wrong side of the lane. Because it is approaching head-on with reduced clearance, the safest response is to slow down to reduce the chance of a collision."}
{"id": "train_09937", "split": "train", "clip_key": "2020-0212-102546_079779_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "079779"}, "frames": ["2020-0212-102546_079779_movie_t-3.jpg", "2020-0212-102546_079779_movie_t-2.jpg", "2020-0212-102546_079779_movie_t-1.jpg", "2020-0212-102546_079779_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a multi-lane urban road with a central divider and clear pavement, with traffic moving lightly. A white flatbed truck ahead in the ego lane is nearing the intersection and begins a right turn across the lanes, briefly narrowing the available path. A black minivan in the neighboring right lane stays alongside and continues straight a bit faster without merging. Traffic lights are visible overhead, including a lit right-turn arrow for the truck.", "hazard_reasoning": "The main hazard is the white truck turning right across the ego lane. Although it has a green arrow, its turning movement places it in the vehicle's path and creates a need to maintain distance. The safest response is to continue behind it rather than accelerate or brake sharply."}
{"id": "train_09938", "split": "train", "clip_key": "2020-0226-101332_049311_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "049311"}, "frames": ["2020-0226-101332_049311_movie_t-3.jpg", "2020-0226-101332_049311_movie_t-2.jpg", "2020-0226-101332_049311_movie_t-1.jpg", "2020-0226-101332_049311_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead.", "environment_perception": "A wet urban divided road with two lanes for the ego direction stretches past office buildings and under a pedestrian overpass, with a metal-railed median separating it from opposite traffic. A gray van is directly ahead in the same lane and continues at a steady pace. In the left lane, a white sedan and a green taxi are traveling alongside with minimal relative movement. Beyond the median, oncoming vehicles are flowing normally, and the traffic light in the distance is green.", "hazard_reasoning": "The gray van ahead is the main vehicle to track in the ego lane. Keep a safe following gap and continue at its speed so the vehicle does not become a collision risk."}
{"id": "train_09939", "split": "train", "clip_key": "2020-0212-102546_027392_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "027392"}, "frames": ["2020-0212-102546_027392_movie_t-3.jpg", "2020-0212-102546_027392_movie_t-2.jpg", "2020-0212-102546_027392_movie_t-1.jpg", "2020-0212-102546_027392_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A clear urban roadway with three lanes in the same direction extends beneath an elevated expressway. The ego vehicle is traveling in the left curb lane on dry, somewhat worn pavement, with moderate traffic around it. A hedge lines the sidewalk and a planted median separates directions. Directly ahead in the ego lane, a white van is reducing speed near the curb as it prepares to turn left, which limits the ego car’s progress. In the adjacent lanes to the right, multiple vehicles keep moving straight and pass by, including a silver sedan that edges slightly ahead beside the ego vehicle. A light-colored minivan farther ahead in the right lane continues straight at a steady pace. Overhead signs show the left lane is for left turns only, the middle lanes go straight, and the right lane allows straight or right, consistent with the van’s behavior.", "hazard_reasoning": "The main concern is the white van ahead slowing down in the ego lane to make a left turn. Its deceleration and turning motion create a speed difference directly in front of the ego vehicle, which raises the chance of conflict if the driver does not adjust. This is a low-level hazard, but the driver should reduce speed and follow carefully."}
{"id": "train_09940", "split": "train", "clip_key": "2020-0227-104226_054959_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054959"}, "frames": ["2020-0227-104226_054959_movie_t-3.jpg", "2020-0227-104226_054959_movie_t-2.jpg", "2020-0227-104226_054959_movie_t-1.jpg", "2020-0227-104226_054959_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming white SUV", "environment_perception": "The scene shows an urban two-way street with one lane in each direction, divided by a solid yellow centerline, leading into a zebra-crossing intersection on smooth road surface with moderate traffic. A gray van ahead in the ego lane is slowing and has stopped at the crosswalk, limiting the ego vehicle's forward movement. On the right side of the intersection, a white SUV is moving toward the ego vehicle in the opposite lane and nearing the crossing. A silver car is parked at the right curb on the oncoming side and does not move. Two pedestrians are waiting on the right sidewalk at the edge of the crosswalk, and a green pedestrian signal is illuminated.", "hazard_reasoning": "The main concern is the white SUV approaching from the right side in the oncoming lane. Since it is advancing toward the ego vehicle near the intersection, it could conflict with the ego path if it continues, so the safer action is to yield and avoid a possible collision."}
{"id": "train_09941", "split": "train", "clip_key": "2020-0212-102546_027392_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "027392"}, "frames": ["2020-0212-102546_027392_movie_t-3.jpg", "2020-0212-102546_027392_movie_t-2.jpg", "2020-0212-102546_027392_movie_t-1.jpg", "2020-0212-102546_027392_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "A clear urban arterial with three lanes in the same direction stretches ahead under an elevated expressway. The ego vehicle is traveling in the left curb lane on dry, slightly worn pavement, with moderate traffic around it. A hedge lines the sidewalk and a planted median strip separates the roadway. Directly ahead, a white van in the ego lane is easing down near the curb as it prepares to turn left. On the right, multiple vehicles in the middle lane keep moving straight and begin to pass, including a silver sedan edging slightly ahead beside the ego car. A light-colored minivan farther ahead in the right lane continues straight at a steady pace. Overhead signs show the left lane as left-turn only, the middle lanes as straight, and the right lane as straight or right, which fits the van's intended maneuver.", "hazard_reasoning": "The main hazard is the white van ahead slowing to make a left turn while remaining in the ego lane. Its deceleration can create a speed mismatch with the ego vehicle and raise the chance of a rear-end conflict, so the driver should reduce speed."}
{"id": "train_09942", "split": "train", "clip_key": "2020-0212-102546_027392_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "027392"}, "frames": ["2020-0212-102546_027392_movie_t-3.jpg", "2020-0212-102546_027392_movie_t-2.jpg", "2020-0212-102546_027392_movie_t-1.jpg", "2020-0212-102546_027392_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down", "environment_perception": "The scene shows a multi-lane urban road under clear weather, with the ego vehicle traveling in the left curb lane on dry, slightly worn pavement and moderate surrounding traffic. A hedge lines the sidewalk, a planted median strip is visible, and an elevated expressway lies ahead. A white van is directly in front of the ego car in the same lane and is slowing near the curb to make a left turn, which limits the ego vehicle’s forward movement. In the adjacent middle lane, several cars continue straight and pass by, including a silver sedan edging slightly ahead beside the ego car. A light-colored minivan farther ahead in the right lane keeps moving straight. Overhead signs show the left lane is for left turns only, the middle lanes are straight, and the right lane allows straight or right, consistent with the van’s intended turn.", "hazard_reasoning": "The main hazard is the white van ahead, which is decelerating in the ego lane to turn left. That slowing maneuver can create a speed mismatch with the ego vehicle and raise the chance of a conflict, so the safe response is to reduce speed and follow cautiously."}
{"id": "train_09943", "split": "train", "clip_key": "2020-0204-103442_062141_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "062141"}, "frames": ["2020-0204-103442_062141_movie_t-3.jpg", "2020-0204-103442_062141_movie_t-2.jpg", "2020-0204-103442_062141_movie_t-1.jpg", "2020-0204-103442_062141_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban arterial with two lanes moving in the same direction and no median leads into a signalized intersection. The road surface appears dry but worn, and traffic is moderate with steady vehicles coming toward the camera. In the ego lane ahead, a black sedan is slowing to turn left, briefly causing the ego vehicle to queue. To the right, a white van in the adjacent lane continues straight through the junction, so passing is not available. In the oncoming lanes, a van with a roof light bar and several cars approach through the intersection while staying in their lanes. A cyclist is visible near the left corner by the sidewalk/crosswalk area and remains out of the roadway.", "hazard_reasoning": "The main hazard is the black sedan ahead in the ego lane, since it is decelerating to complete a left turn at the intersection. This creates a need for the driver to reduce speed and keep a safe following gap to avoid a possible rear-end collision as the sedan slows."}
{"id": "train_09944", "split": "train", "clip_key": "2020-0203-154554_037760_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "037760"}, "frames": ["2020-0203-154554_037760_movie_t-3.jpg", "2020-0203-154554_037760_movie_t-2.jpg", "2020-0203-154554_037760_movie_t-1.jpg", "2020-0203-154554_037760_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a multi-lane urban road beneath elevated highway spans, with three lanes moving in the same direction and a guardrail along the right edge. Traffic is fairly steady. A white box truck is directly ahead in the ego lane and is the main vehicle influencing the flow. To the right, a silver minivan is slightly ahead in the neighboring lane and keeps traveling straight. On the left, a small silver van is moving forward near the curb a bit behind the ego car. Several other cars are visible farther ahead in the middle and right lanes, while overhead blue guide signs hang from gantries. No construction or other unusual obstacles stand out.", "hazard_reasoning": "The key risk is the white truck ahead in the ego lane. It should be followed at a safe distance so there is room to react if it slows or stops unexpectedly, reducing the chance of a rear-end collision."}
{"id": "train_09945", "split": "train", "clip_key": "2020-0227-104226_054959_movie", "source": {"subset": "drama", "scenario": "2020-0227-104226", "frame": "054959"}, "frames": ["2020-0227-104226_054959_movie_t-3.jpg", "2020-0227-104226_054959_movie_t-2.jpg", "2020-0227-104226_054959_movie_t-1.jpg", "2020-0227-104226_054959_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to the oncoming white SUV", "environment_perception": "This is an urban two-way street with one lane in each direction and a solid yellow centerline leading up to a zebra-crossing intersection on smooth pavement, with moderate traffic around it. A gray van ahead in the ego lane is slowing and has stopped at the crosswalk, limiting the ego vehicle’s forward movement. On the right side of the intersection, a white SUV is coming toward the ego vehicle in the oncoming lane and closing in on the crossing. A silver car is parked at the right curb on the opposite side and does not move. Two pedestrians are waiting at the right sidewalk edge by the crosswalk, and a green pedestrian signal is visible.", "hazard_reasoning": "The main risk is the white SUV approaching from the right in the oncoming lane. Because it is moving toward the ego vehicle and nearing the intersection, it could conflict with the ego path, so caution and yielding are needed to prevent a collision."}
{"id": "train_09946", "split": "train", "clip_key": "2020-0204-103442_062141_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "062141"}, "frames": ["2020-0204-103442_062141_movie_t-3.jpg", "2020-0204-103442_062141_movie_t-2.jpg", "2020-0204-103442_062141_movie_t-1.jpg", "2020-0204-103442_062141_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "An urban arterial with two lanes in the same direction and no median leads into a signalized intersection. The road surface appears dry and worn, and traffic is moderate with a steady stream of vehicles coming toward the camera. Directly ahead in the ego lane, a black sedan is slowing as it prepares to turn left at the intersection, briefly causing the ego vehicle to queue. In the next lane to the right and slightly ahead, a white van continues straight through the junction, so passing is not really available. In the opposing lanes, a van with a roof light bar and several other cars approach the intersection but stay within their lanes. On the left sidewalk near the corner, a cyclist is moving slowly along the crosswalk area and remains outside the roadway.", "hazard_reasoning": "The main concern is the black sedan ahead in the ego lane, which is decelerating because it is making a left turn at the intersection. This creates a need to slow down and keep a safe following gap to reduce the chance of a rear-end collision as the sedan slows further."}
{"id": "train_09947", "split": "train", "clip_key": "2020-0203-154554_037760_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "037760"}, "frames": ["2020-0203-154554_037760_movie_t-3.jpg", "2020-0203-154554_037760_movie_t-2.jpg", "2020-0203-154554_037760_movie_t-1.jpg", "2020-0203-154554_037760_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a multi-lane urban road beneath elevated highway ramps, with smooth pavement, moderate traffic, and a guardrail along the right edge. A white box truck is directly ahead in the ego lane and appears to be the main vehicle being followed. To the right, a silver minivan is slightly farther ahead in the adjacent lane and continues straight. On the left, a small silver van is moving forward near the curb, a bit behind the ego vehicle. Several other cars are visible farther ahead in the center and right lanes, while blue direction signs hang from overhead gantries and no work zone or unusual obstacle is present.", "hazard_reasoning": "The main concern is the white truck traveling ahead in the same lane. Because it is the lead vehicle, the driver should keep a safe following gap in case it slows or stops unexpectedly."}
{"id": "train_09948", "split": "train", "clip_key": "2020-0204-103442_062141_movie", "source": {"subset": "drama", "scenario": "2020-0204-103442", "frame": "062141"}, "frames": ["2020-0204-103442_062141_movie_t-3.jpg", "2020-0204-103442_062141_movie_t-2.jpg", "2020-0204-103442_062141_movie_t-1.jpg", "2020-0204-103442_062141_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Slow down to maintain safe following distance", "environment_perception": "A dry, worn urban arterial with two lanes in the same direction and no median leads into a signalized intersection, with moderate traffic and vehicles coming toward the camera in the opposite direction. In the ego lane, a black sedan ahead is slowing as it prepares a left turn, briefly forcing the ego vehicle to wait. A white van in the right lane is continuing straight through the intersection a little farther ahead, so passing is not available. Opposing traffic includes a van with a roof light bar and several cars moving through the junction in their lanes. A cyclist is visible near the left sidewalk by the corner, moving slowly along the crosswalk area without entering the roadway.", "hazard_reasoning": "The main risk is the black sedan directly ahead in the ego lane, which is decelerating to complete a left turn at the intersection. Because it is slowing in front of the ego vehicle, the driver should reduce speed and keep a safe gap to avoid a rear-end collision if the sedan slows further."}
{"id": "train_09949", "split": "train", "clip_key": "2020-0203-154554_037760_movie", "source": {"subset": "drama", "scenario": "2020-0203-154554", "frame": "037760"}, "frames": ["2020-0203-154554_037760_movie_t-3.jpg", "2020-0203-154554_037760_movie_t-2.jpg", "2020-0203-154554_037760_movie_t-1.jpg", "2020-0203-154554_037760_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a multi-lane urban road passing under elevated expressway beams, with a guardrail along the right edge and light to moderate traffic flow. A white box truck is directly ahead in the ego lane and is the main vehicle setting the pace. A silver minivan is slightly ahead in the lane to the right, moving straight with no lane change. On the left, a small silver van is traveling forward near the curb and sits a bit behind the ego vehicle. Several other cars are visible farther ahead in the center and right lanes, while overhead blue direction signs appear on the gantries. No road work or other unusual obstruction is evident.", "hazard_reasoning": "The main concern is the white truck ahead in the ego lane. Maintaining a safe following gap is important in case it slows down suddenly, since that could create a rear-end risk."}
{"id": "train_09950", "split": "train", "clip_key": "2020-0226-140503_044082_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "044082"}, "frames": ["2020-0226-140503_044082_movie_t-3.jpg", "2020-0226-140503_044082_movie_t-2.jpg", "2020-0226-140503_044082_movie_t-1.jpg", "2020-0226-140503_044082_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming sedan", "environment_perception": "The scene shows an urban multi-lane two-way arterial bordered by tall buildings, leading into a signalized intersection. The pavement is smooth with no median, traffic is moderate, and the signal ahead is green for the ego vehicle. A white van ahead and slightly left in the same direction is moving through the intersection and appears to be setting the flow. In the oncoming lanes on the right, a silver sedan is approaching the ego car through the intersection, and a box truck beside it is also coming straight from the opposite direction within its lane.", "hazard_reasoning": "The main concern is the silver sedan coming toward the ego vehicle on the right side of the road. Because it is approaching from the opposite direction, it could potentially move into the ego lane unexpectedly, so the safe response is to yield and let it pass."}
{"id": "train_09951", "split": "train", "clip_key": "2020-0212-102546_000736_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "000736"}, "frames": ["2020-0212-102546_000736_movie_t-3.jpg", "2020-0212-102546_000736_movie_t-2.jpg", "2020-0212-102546_000736_movie_t-1.jpg", "2020-0212-102546_000736_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead.", "environment_perception": "The scene is an urban multi-lane intersection with smooth pavement and no median, and traffic appears moderate. The ego vehicle is traveling in the left lane. Directly ahead, a black sedan is making a left turn through the junction and is pacing the maneuver. A white van farther ahead on the right continues straight to the opposite side, coming close to the ego vehicle’s eventual turn area but not merging. A cyclist crosses the central crosswalk from right to left across the ego path, and overhead signals are visible.", "hazard_reasoning": "The main hazard is the black sedan ahead, which is turning left. Because it is slowing for the turn, the ego driver should maintain a safe following distance and be ready for the vehicle’s reduced speed to avoid a rear-end collision."}
{"id": "train_09952", "split": "train", "clip_key": "2020-0226-140503_044082_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "044082"}, "frames": ["2020-0226-140503_044082_movie_t-3.jpg", "2020-0226-140503_044082_movie_t-2.jpg", "2020-0226-140503_044082_movie_t-1.jpg", "2020-0226-140503_044082_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming sedan", "environment_perception": "The scene shows a multi-lane two-way city arterial with tall buildings on both sides, approaching a signalized intersection. The roadway is flat and unobstructed, traffic is moderate, and the signal ahead is green for the ego vehicle. A white van ahead and slightly to the left continues through the intersection, setting the flow. In the oncoming lanes on the right, a silver sedan is moving toward the ego vehicle through the intersection, with a box truck also coming from the opposite direction and staying in its lane.", "hazard_reasoning": "The main concern is the silver sedan approaching head-on on the right side of the road. Because it is moving toward the ego car, there is a small chance it could drift or merge into the ego lane, so the safer response is to yield and let it pass."}
{"id": "train_09953", "split": "train", "clip_key": "2020-0212-102546_000736_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "000736"}, "frames": ["2020-0212-102546_000736_movie_t-3.jpg", "2020-0212-102546_000736_movie_t-2.jpg", "2020-0212-102546_000736_movie_t-1.jpg", "2020-0212-102546_000736_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead.", "environment_perception": "An urban intersection with multiple lanes, smooth pavement, and no median is visible, with moderate traffic around it. The ego vehicle is traveling in the left lane and approaching the junction. Directly ahead, a black sedan is already making a left turn and is setting the pace for the ego car. To the right, a white van continues straight across toward the far side without merging. A cyclist is also crossing the central crosswalk from right to left ahead of the intended turning path. Traffic lights are controlling the intersection.", "hazard_reasoning": "The main concern is the black sedan in front, which is turning left ahead of the ego vehicle. Because that car is leading the maneuver and slowing for the turn, the driver should keep a safe following distance and be ready for reduced speed to avoid a rear-end collision."}
{"id": "train_09954", "split": "train", "clip_key": "2020-0212-102546_000736_movie", "source": {"subset": "drama", "scenario": "2020-0212-102546", "frame": "000736"}, "frames": ["2020-0212-102546_000736_movie_t-3.jpg", "2020-0212-102546_000736_movie_t-2.jpg", "2020-0212-102546_000736_movie_t-1.jpg", "2020-0212-102546_000736_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Follow the vehicle ahead.", "environment_perception": "The scene shows an urban multi-lane intersection with smooth pavement and no median, with moderate traffic. The ego vehicle is moving in the left lane toward the junction. Directly ahead, a black sedan is making a left turn through the intersection and is guiding the same maneuver. A white van to the right continues straight across toward the far side and does not merge, though it passes near the ego vehicle’s eventual turn path. A cyclist also crosses the central crosswalk from right to left in front of the intended route, and overhead signals control the junction.", "hazard_reasoning": "The main hazard is the black sedan ahead completing a left turn. Since it is leading the maneuver, its slower movement means the ego vehicle should keep a safe following distance and stay prepared to avoid a collision while turning."}
{"id": "train_09955", "split": "train", "clip_key": "2020-0226-140503_044082_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "044082"}, "frames": ["2020-0226-140503_044082_movie_t-3.jpg", "2020-0226-140503_044082_movie_t-2.jpg", "2020-0226-140503_044082_movie_t-1.jpg", "2020-0226-140503_044082_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Yield to oncoming sedan", "environment_perception": "A signal-controlled urban arterial with multiple lanes and tall buildings extends ahead; the pavement is clear, there is no median, traffic is moderate, and the signal facing the ego vehicle is green. A white van just ahead and slightly left in the same direction continues through the intersection and is pacing the ego vehicle. In the oncoming lanes on the right side, a silver sedan is traveling toward the ego vehicle through the intersection, while a box truck also comes from the opposite direction and keeps straight in its own lane.", "hazard_reasoning": "The main concern is the silver sedan approaching head-on from the right-side opposing lanes. Since it is moving toward the ego vehicle, it could intrude unexpectedly, so the safe response is to yield and let it pass."}
{"id": "train_09956", "split": "train", "clip_key": "2020-0228-102841_023016_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "023016"}, "frames": ["2020-0228-102841_023016_movie_t-3.jpg", "2020-0228-102841_023016_movie_t-2.jpg", "2020-0228-102841_023016_movie_t-1.jpg", "2020-0228-102841_023016_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "The scene shows an urban signalized intersection with multiple same-direction lanes, smooth road surface, and no physical median, with traffic moving moderately ahead. A white sedan directly ahead of the ego vehicle is proceeding out of the lane and turning right through the intersection under a green signal. A beige hatchback in the left adjacent lane remains slightly ahead and continues straight at a slow speed, roughly matching the ego car. On the right, a small white kei truck is creeping toward the junction from the cross street and could enter after the turn phase, while a red heavy truck is stopped near the far-right corner.", "hazard_reasoning": "The main relevant movement is the white sedan in front, which is turning right on green and moving away from the ego vehicle’s path. Because it is clearing the lane rather than blocking it, the appropriate response is to continue forward smoothly and start moving."}
{"id": "train_09957", "split": "train", "clip_key": "2020-0228-102841_023016_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "023016"}, "frames": ["2020-0228-102841_023016_movie_t-3.jpg", "2020-0228-102841_023016_movie_t-2.jpg", "2020-0228-102841_023016_movie_t-1.jpg", "2020-0228-102841_023016_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "A signal-controlled urban intersection with several same-direction lanes and smooth road surface is ahead, with moderate traffic and no physical median. A white sedan directly ahead of the ego vehicle is moving off and making a right turn through the intersection under a green light, leaving the ego lane. A beige hatchback in the left adjacent lane stays slightly ahead and continues straight at a slow, steady pace. On the right side, a small white kei truck is edging up from the cross street toward the junction and could enter after the turning movement clears. A red heavy truck is stopped near the far-right corner.", "hazard_reasoning": "The white sedan in front is not blocking the path; it is turning right on green and pulling away from the ego vehicle. As it clears the lane, the ego driver can begin moving to keep traffic flowing smoothly."}
{"id": "train_09958", "split": "train", "clip_key": "2020-0226-101332_057738_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "057738"}, "frames": ["2020-0226-101332_057738_movie_t-3.jpg", "2020-0226-101332_057738_movie_t-2.jpg", "2020-0226-101332_057738_movie_t-1.jpg", "2020-0226-101332_057738_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "A broad signal-controlled urban intersection is visible, marked by zebra crosswalks and dry pavement. Traffic is moderate, with several vehicles coming toward the camera and moving straight through the junction. A black SUV in the rightmost oncoming lane continues forward toward the ego vehicle, while other cars in adjacent oncoming lanes also pass straight ahead on the opposite side. A dark van near the right edge is approaching in the curbside oncoming lane. Farther left, vehicles on the far side are moving away, and overhead blue signs show left, straight, and right lane directions.", "hazard_reasoning": "The black SUV is the main concern because it is traveling straight toward the ego car through the intersection in the right lane. Since this oncoming vehicle could conflict with the ego path if the driver does not yield, the safest response is to stop and avoid a possible collision."}
{"id": "train_09959", "split": "train", "clip_key": "2020-0228-102841_023016_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "023016"}, "frames": ["2020-0228-102841_023016_movie_t-3.jpg", "2020-0228-102841_023016_movie_t-2.jpg", "2020-0228-102841_023016_movie_t-1.jpg", "2020-0228-102841_023016_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Start moving", "environment_perception": "The scene shows a signalized urban intersection with several same-direction lanes splitting ahead and no physical median, on smooth road surface with moderate traffic. A white sedan immediately in front of the ego vehicle is moving off and making a right turn through the junction under a green signal, leaving the ego lane. A beige hatchback in the left adjacent lane is slightly ahead and continues straight at a slow, steady pace. On the right side, a small white kei truck is creeping up from the cross street toward the intersection, and a red heavy truck is stopped near the far-right corner.", "hazard_reasoning": "The main hazard is the white sedan ahead, which is turning right on green and moving clear of the ego car’s path. Because it is already pulling away and will no longer block the lane, the appropriate response is to begin moving forward and keep traffic flowing smoothly."}
{"id": "train_09960", "split": "train", "clip_key": "2020-0226-101332_057738_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "057738"}, "frames": ["2020-0226-101332_057738_movie_t-3.jpg", "2020-0226-101332_057738_movie_t-2.jpg", "2020-0226-101332_057738_movie_t-1.jpg", "2020-0226-101332_057738_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "The view is of a broad signalized urban intersection with multiple lanes and zebra crosswalk markings. The road surface is dry, and traffic is moving steadily with several vehicles coming toward the camera. A black SUV in the rightmost oncoming lane is advancing straight through the intersection toward the ego vehicle. Other oncoming cars in neighboring lanes continue straight as well, staying on the opposite side of the road. A dark van appears near the right edge, also approaching in the curbside oncoming lane. Blue overhead signs show lane directions for left, straight, and right.", "hazard_reasoning": "The main risk is the black SUV moving directly toward the ego car from the right lane. Since it is oncoming and crossing the intersection straight ahead, it could become a collision threat if the driver does not yield. The appropriate response is to stop and avoid impact."}
{"id": "train_09961", "split": "train", "clip_key": "2020-0226-101332_057738_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "057738"}, "frames": ["2020-0226-101332_057738_movie_t-3.jpg", "2020-0226-101332_057738_movie_t-2.jpg", "2020-0226-101332_057738_movie_t-1.jpg", "2020-0226-101332_057738_movie_t.jpg"], "hazard_type": "oncoming_vehicle", "severity_level": "LOW", "warning_content": "Stop", "environment_perception": "The view is of a broad, signalized multi-lane urban intersection with zebra crossings, dry pavement, and moderate traffic. A black SUV is coming straight toward the ego vehicle in the rightmost oncoming lane. Additional oncoming cars in the neighboring lanes also continue straight across the intersection, staying on the opposite side of the road. A dark van is visible near the right edge, moving toward the camera in the curbside oncoming lane. On the far left, other vehicles are traveling away from the ego car, and overhead blue signs mark lane directions for left, straight, and right.", "hazard_reasoning": "The main hazard is the black SUV advancing through the intersection in the right lane toward the ego vehicle. Because it is oncoming and could conflict if it does not yield, it presents a collision risk, so the driver should stop."}
{"id": "train_09962", "split": "train", "clip_key": "2020-0218-103119_022405_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0218-103119_022405_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0218-103119_022405_movie_t-3_augB1.jpg", "2020-0218-103119_022405_movie_t-2_augB1.jpg", "2020-0218-103119_022405_movie_t-1_augB1.jpg", "2020-0218-103119_022405_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the traffic cone", "environment_perception": "The scene shows a divided urban roadway with two lanes each way, bordered by mid-rise buildings and a smooth surface under moderate traffic. Flexible-post median separation is present, and a painted speed marking “50” appears on the pavement. A white van travels ahead in the ego lane, slightly limiting forward progress, while a silver sedan farther ahead to the left continues near the curb within its lane. On the opposite side of the median, several small trucks move toward the camera at a steady pace. An orange-and-white traffic cone is positioned along the right edge of the ego lane near the median.", "hazard_reasoning": "The traffic cone on the right side of the ego lane indicates possible road works or a temporary obstruction. Because it sits close to the travel path, the driver should stay alert and be ready for caution or a slight lane adjustment."}
{"id": "train_09963", "split": "train", "clip_key": "2020-0226-140503_015810_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-140503_015810_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-140503_015810_movie_t-3_augB1.jpg", "2020-0226-140503_015810_movie_t-2_augB1.jpg", "2020-0226-140503_015810_movie_t-1_augB1.jpg", "2020-0226-140503_015810_movie_t_augB1.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "HIGH", "warning_content": "Be aware of the turning truck", "environment_perception": "The scene shows a two-way urban street bordered by mid-rise buildings, with one lane in each direction separated by double white lines. The pavement is dry and slightly worn, and traffic is light. Ahead in the ego lane, a white Sagawa truck near the left curb is turning left and taking up part of the lane, narrowing the available path. An oncoming black car approaches in the opposite lane and passes by the obstruction, while parked vehicles on the right side make the roadway feel tighter.", "hazard_reasoning": "The main risk is the white truck ahead making a left turn. Its movement can encroach into the ego vehicle’s lane, so the driver should slow down and keep a safe gap while watching its turn."}
{"id": "train_09964", "split": "train", "clip_key": "2020-0218-103119_022405_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0218-103119_022405_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0218-103119_022405_movie_t-3_augB1.jpg", "2020-0218-103119_022405_movie_t-2_augB1.jpg", "2020-0218-103119_022405_movie_t-1_augB1.jpg", "2020-0218-103119_022405_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the traffic cone", "environment_perception": "This is a divided urban roadway with two lanes in each direction, bordered by mid-rise buildings and a smooth surface under moderate traffic. A narrow median with flexible posts separates opposing flow, and a 50 speed marking is visible on the pavement. Ahead in the ego lane, a white van continues toward a pedestrian overpass and slightly limits the car’s pace. A silver sedan ahead and to the left stays near the curb in the same direction. On the opposite side, several small trucks move toward the camera at a steady speed, staying behind the median. An orange-and-white traffic cone is placed near the right edge of the ego lane by the median.", "hazard_reasoning": "The traffic cone on the right side of the ego lane is the key hazard. It indicates possible nearby road work, so the driver should stay alert and be ready for caution or a minor lane adjustment."}
{"id": "train_09965", "split": "train", "clip_key": "2020-0226-140503_015810_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-140503_015810_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-140503_015810_movie_t-3_augB1.jpg", "2020-0226-140503_015810_movie_t-2_augB1.jpg", "2020-0226-140503_015810_movie_t-1_augB1.jpg", "2020-0226-140503_015810_movie_t_augB1.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "HIGH", "warning_content": "Be aware of the turning truck", "environment_perception": "This is a narrow urban two-way road with mid-rise buildings on both sides, one lane in each direction separated by double white center lines. The pavement looks dry and slightly worn, and traffic is light. A white Sagawa truck ahead near the left curb in the ego lane is making a left turn, taking up part of the lane and limiting the available path. An oncoming black car is approaching in the opposite lane, which affects timing for passing the obstruction. Parked vehicles along the right shoulder make the roadway feel tighter.", "hazard_reasoning": "The main hazard is the white truck ahead that is turning left. Its movement could encroach into the ego lane, so the driver should slow down and keep a safe distance while it completes the turn."}
{"id": "train_09966", "split": "train", "clip_key": "2020-0213-143552_009674_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_009674_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_009674_movie_t-3_augB1.jpg", "2020-0213-143552_009674_movie_t-2_augB1.jpg", "2020-0213-143552_009674_movie_t-1_augB1.jpg", "2020-0213-143552_009674_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Manoeuvre around the cone carefully.", "environment_perception": "A two-way urban road with one lane in each direction passes between mid-rise buildings, and the roadway appears clear with light to moderate traffic. A dark hatchback in front of the ego car is moving steadily in the same lane, while an oncoming silver sedan travels past in the opposite lane. Near the right curb, a white truck is also moving slowly with the opposing traffic. Multiple orange traffic cones, including one clearly placed in the right lane near the centerline, together with a small sign, reduce the available space and mark a temporary road obstruction.", "hazard_reasoning": "The key hazard is the orange traffic cone positioned in the right lane. It creates an obstacle that the driver must steer around carefully to avoid impact and keep the vehicle in a safe path."}
{"id": "train_09967", "split": "train", "clip_key": "2020-0213-143552_009674_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0213-143552_009674_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0213-143552_009674_movie_t-3_augB1.jpg", "2020-0213-143552_009674_movie_t-2_augB1.jpg", "2020-0213-143552_009674_movie_t-1_augB1.jpg", "2020-0213-143552_009674_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Manoeuvre around the cone carefully.", "environment_perception": "The scene shows a two-way urban road with one lane in each direction between mid-rise buildings, and the surface appears clear with light to moderate traffic. A dark hatchback in front of the ego vehicle continues straight ahead and appears to set the pace. In the opposite direction, a silver sedan travels past on the right in its lane, while a white truck farther right near the curb also moves slowly with the opposing traffic. Multiple orange cones, especially one standing out in the right lane near the centerline, together with a small sign, reduce the available space and form a temporary roadside/work-zone obstruction.", "hazard_reasoning": "The main hazard is the orange traffic cone placed in the right lane. It creates a direct obstacle, so the driver needs to steer around it carefully to avoid contact and keep a safe position in the lane."}
{"id": "train_09968", "split": "train", "clip_key": "2020-0226-140503_015810_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0226-140503_015810_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0226-140503_015810_movie_t-3_augB1.jpg", "2020-0226-140503_015810_movie_t-2_augB1.jpg", "2020-0226-140503_015810_movie_t-1_augB1.jpg", "2020-0226-140503_015810_movie_t_augB1.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "HIGH", "warning_content": "Be aware of the turning truck", "environment_perception": "This is an urban two-way road with mid-rise buildings, one lane in each direction separated by double white lines. The pavement is dry and slightly worn, and traffic is light, while the left side of the lane is narrowed near the curb. A white Sagawa truck ahead on the left curbside in the ego lane is making a left turn, taking up space and limiting the available path. An oncoming black car is approaching in the opposite lane and affects when the ego vehicle can move around the obstruction. Parked vehicles along the right shoulder make the roadway even tighter.", "hazard_reasoning": "The key hazard is the white truck ahead turning left. Its movement could extend into the ego lane, so the driver should slow down and keep a safe buffer while passing or waiting."}
{"id": "train_09969", "split": "train", "clip_key": "2020-0228-150133_021583_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "021583"}, "frames": ["2020-0228-150133_021583_movie_t-3.jpg", "2020-0228-150133_021583_movie_t-2.jpg", "2020-0228-150133_021583_movie_t-1.jpg", "2020-0228-150133_021583_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "The scene shows an urban two-way road leading into a level railroad crossing with one lane in each direction, no center median, and smooth pavement. Traffic is moderate and both sides have queued vehicles. A yellow-and-black barrier is lowered directly ahead of the ego vehicle, closing off the lane at the crossing. Past the gate, several pedestrians are moving left to right across the tracks and crosswalk, limiting passage. On the far side, a silver oncoming van is stopped at its line behind the barrier, and a bicyclist waits near the right curb, possibly entering once the crossing clears. Railroad crossing signs and equipment are present.", "hazard_reasoning": "The lowered yellow-and-black barrier is the key hazard because it fully blocks the ego lane and marks an active rail crossing. The driver must stop and remain behind the gate to avoid a collision and to follow the crossing controls."}
{"id": "train_09970", "split": "train", "clip_key": "2020-0228-150133_021583_movie", "source": {"subset": "drama", "scenario": "2020-0228-150133", "frame": "021583"}, "frames": ["2020-0228-150133_021583_movie_t-3.jpg", "2020-0228-150133_021583_movie_t-2.jpg", "2020-0228-150133_021583_movie_t-1.jpg", "2020-0228-150133_021583_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "An urban two-way road leads into a level railroad crossing with one lane in each direction, no median, and smooth pavement. Traffic appears moderate, with vehicles queued on both sides. A yellow-and-black barrier is lowered directly ahead of the ego car, stopping passage through the crossing. Past the gate, several pedestrians move left to right across the tracks and crosswalk, limiting available movement. On the far side, a silver van faces the ego vehicle and waits at the stop line behind its own gate. A bicyclist is also waiting near the right curb beyond the crossing and could enter the lane when the barrier lifts. Railroad crossing signs and equipment are visible.", "hazard_reasoning": "The most immediate issue is the lowered yellow-and-black barrier in front of the ego car. Because it blocks the roadway and marks an active railroad crossing, the driver must stop and remain clear of the crossing to avoid a collision and follow the signal control."}
{"id": "train_09971", "split": "train", "clip_key": "2020-0226-140503_015810_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "015810"}, "frames": ["2020-0226-140503_015810_movie_t-3.jpg", "2020-0226-140503_015810_movie_t-2.jpg", "2020-0226-140503_015810_movie_t-1.jpg", "2020-0226-140503_015810_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "HIGH", "warning_content": "Be aware of the turning truck", "environment_perception": "This is a two-way urban road bordered by mid-rise buildings, with one lane in each direction separated by double white lines. The pavement is dry and slightly worn, traffic is light, and the left side of the road is partly squeezed by the curb. A white Sagawa truck is ahead in the left lane and is in the middle of a left turn, taking up space in the lane and limiting the ego vehicle’s available path. In the opposite lane, a black car is approaching and passing the blockage, while parked vehicles along the right shoulder make the roadway feel tighter.", "hazard_reasoning": "The main hazard is the white truck turning left ahead. Its movement could encroach into the ego vehicle’s lane, so the driver should slow down and keep enough clearance while the turn completes."}
{"id": "train_09972", "split": "train", "clip_key": "2020-0226-140503_015810_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "015810"}, "frames": ["2020-0226-140503_015810_movie_t-3.jpg", "2020-0226-140503_015810_movie_t-2.jpg", "2020-0226-140503_015810_movie_t-1.jpg", "2020-0226-140503_015810_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "HIGH", "warning_content": "Be aware of the turning truck", "environment_perception": "This is an urban two-way road with mid-rise buildings on both sides, one lane in each direction separated by double white lines. The pavement is dry but somewhat worn, and the roadway feels tight because the left lane is narrowed near the curb. A white Sagawa truck ahead in the left lane is making a left turn, blocking part of the lane and limiting the ego vehicle’s available path. An oncoming black car is coming toward the camera in the opposite lane, and parked vehicles along the right shoulder make the corridor even narrower.", "hazard_reasoning": "The main hazard is the white truck turning left in front of us. Its movement could cut into the ego vehicle’s path or leave too little clearance, so the driver should slow down and stay prepared to pass with caution."}
{"id": "train_09973", "split": "train", "clip_key": "2020-0205-103411_094696_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-103411_094696_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-103411_094696_movie_t-3_augB1.jpg", "2020-0205-103411_094696_movie_t-2_augB1.jpg", "2020-0205-103411_094696_movie_t-1_augB1.jpg", "2020-0205-103411_094696_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be cautious of traffic cone", "environment_perception": "The scene shows an urban multi-lane road with moderate traffic moving smoothly, and a concrete barrier lines the far left side. The ego vehicle is traveling in the center lane. A small flatbed truck is directly ahead in the same lane and maintaining a steady speed, which limits forward progress. To the left, a white sedan is traveling slightly faster, making a left lane change less practical. On the right adjacent lane, a white car is moving near a taper, while an orange traffic cone sits on the right edge of the ego lane, narrowing space and indicating a merge area. Vehicles farther ahead continue normally without sudden actions.", "hazard_reasoning": "The most important hazard is the orange traffic cone positioned on the right side of the lane. It suggests possible road work or lane restriction ahead, so the driver should remain alert and prepare for a construction-related hazard."}
{"id": "train_09974", "split": "train", "clip_key": "2020-0131-103016_018433_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "018433"}, "frames": ["2020-0131-103016_018433_movie_t-3.jpg", "2020-0131-103016_018433_movie_t-2.jpg", "2020-0131-103016_018433_movie_t-1.jpg", "2020-0131-103016_018433_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows an urban multi-lane intersection with smooth road markings and no median, with moderate traffic continuing through. A white hatchback ahead in the ego lane is making a right turn in the center of the intersection and cuts across our intended path, limiting forward movement. Two dark sedans a little to the left continue through neighboring lanes, with one veering left, but neither enters the ego lane. Farther ahead, oncoming vehicles are moving in the opposite direction at a slow pace. Several pedestrians are waiting on the right sidewalk near the crosswalk.", "hazard_reasoning": "The main hazard is the white hatchback turning right while positioned in the ego lane area of the intersection. Since it is intruding into the lane ahead, the safest response is to stay behind it and keep a proper following distance to prevent a collision."}
{"id": "train_09975", "split": "train", "clip_key": "2020-0205-103411_094696_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-103411_094696_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-103411_094696_movie_t-3_augB1.jpg", "2020-0205-103411_094696_movie_t-2_augB1.jpg", "2020-0205-103411_094696_movie_t-1_augB1.jpg", "2020-0205-103411_094696_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be cautious of traffic cone", "environment_perception": "The scene shows a multi-lane urban road with moderate, steady traffic and smooth pavement, plus a concrete barrier running along the far left. The ego vehicle is traveling in the center lane. A small flatbed truck is directly ahead in the same lane, keeping pace and limiting forward speed. On the left, a white sedan is moving a bit faster beside the ego vehicle, making a lane change to the left less practical. In the right adjacent lane, a white car is advancing near a taper, while an orange traffic cone sits on the right edge of the ego lane, narrowing space and suggesting a merge area. Other vehicles farther ahead continue normally.", "hazard_reasoning": "The key hazard is the orange traffic cone beside the lane. It indicates possible road work or lane restriction ahead, so the driver should slow down and stay alert."}
{"id": "train_09976", "split": "train", "clip_key": "2020-0131-103016_018433_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "018433"}, "frames": ["2020-0131-103016_018433_movie_t-3.jpg", "2020-0131-103016_018433_movie_t-2.jpg", "2020-0131-103016_018433_movie_t-1.jpg", "2020-0131-103016_018433_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "Ahead is an urban multi-lane intersection with flat pavement and no median, where traffic is flowing at a moderate pace. In the ego lane, a white hatchback in front is making a right turn through the intersection and cutting across our intended path. Slightly to the left, two dark sedans continue through neighboring lanes, with one arcing left, but neither enters the ego lane. Farther ahead, oncoming vehicles are approaching in the opposite direction at low speed. A group of pedestrians is waiting on the right sidewalk near the crosswalk.", "hazard_reasoning": "The main hazard is the white hatchback turning right while occupying the ego lane in the intersection. Since it is moving into our path, the safe response is to stay behind it and keep a proper following distance to prevent a collision."}
{"id": "train_09977", "split": "train", "clip_key": "2020-0131-103016_018433_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "018433"}, "frames": ["2020-0131-103016_018433_movie_t-3.jpg", "2020-0131-103016_018433_movie_t-2.jpg", "2020-0131-103016_018433_movie_t-1.jpg", "2020-0131-103016_018433_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "This is a city intersection with several lanes, flat pavement, and no median. Traffic is flowing normally. Ahead in the ego lane, a white hatchback is making a right turn in the middle of the junction and cutting across our intended path. Two dark sedans farther left are also moving through the intersection in neighboring lanes, with one veering left, but they do not enter the ego lane. In the distance, oncoming vehicles continue through their opposing lanes at a slow pace. A group of pedestrians is waiting on the right sidewalk near the crosswalk.", "hazard_reasoning": "The main concern is the white hatchback turning right directly ahead in the ego lane. Since it is intruding into our lane within the intersection, the safest action is to keep behind it and maintain a proper following distance to prevent a collision."}
{"id": "train_09978", "split": "train", "clip_key": "2020-0210-155354_004307_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-155354_004307_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-155354_004307_movie_t-3_augB1.jpg", "2020-0210-155354_004307_movie_t-2_augB1.jpg", "2020-0210-155354_004307_movie_t-1_augB1.jpg", "2020-0210-155354_004307_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the traffic cone.", "environment_perception": "This is a commercial urban road leading toward a railway underpass, with a narrow two-way lane and dry pavement. Traffic is moving slowly in a short queue, and a white SUV ahead in the ego lane is inching forward and stopping, limiting the flow. To the left of the ego lane, a red traffic cone intrudes into the lane near a black van parked at the curb, making the passage tighter. A cyclist is moving forward along the right curb in the same direction, close to the ego lane. Pedestrians are present on both sidewalks near storefronts, and a no-parking sign plus underpass height markings are visible.", "hazard_reasoning": "The main hazard is the red traffic cone partially blocking the lane on the left side of the ego vehicle. It signals a lane obstruction that could force an unexpected maneuver or lane deviation, so the driver should treat it as the critical risk."}
{"id": "train_09979", "split": "train", "clip_key": "2020-0207-101955_030922_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "030922"}, "frames": ["2020-0207-101955_030922_movie_t-3.jpg", "2020-0207-101955_030922_movie_t-2.jpg", "2020-0207-101955_030922_movie_t-1.jpg", "2020-0207-101955_030922_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "The scene shows a bright urban multi-lane intersection with a planted median and clear pavement, viewed as the ego vehicle comes along the left-side lane. A white truck is moving through the center of the intersection toward the right, crossing in front and taking up the route ahead. On the left corner near the zebra crossing, several pedestrians are waiting on the curb beside the roadway. In the distance, a few vehicles continue away beyond the junction on the near side of the median, while light oncoming traffic approaches on the far side. Sunlight from the right creates some glare around the buildings.", "hazard_reasoning": "The main concern is the white truck in the intersection on the right side. Since it is already occupying the crossing path and could enter the ego vehicle's intended lane, it presents a collision risk. The driver should stop and wait for it to clear."}
{"id": "train_09980", "split": "train", "clip_key": "2020-0203-114632_005514_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005514"}, "frames": ["2020-0203-114632_005514_movie_t-3.jpg", "2020-0203-114632_005514_movie_t-2.jpg", "2020-0203-114632_005514_movie_t-1.jpg", "2020-0203-114632_005514_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "This is a two-way urban road with one lane in each direction, bending gently to the right and marked by a solid double yellow centerline on clean asphalt. Traffic around the curve is light to moderate. In the ego lane ahead, a motorcyclist is traveling away slowly, and a small white van continues farther ahead through the bend. On the right side in the opposing lane, a bus is stopped at the curb and not moving. Along the left side of our lane, orange cones and rope mark off an area around parked construction vehicles, reducing the width of the usable lane.", "hazard_reasoning": "The cones on the left indicate road construction and a parked construction vehicle encroaching into the roadway. Because this setup partly blocks the lane, the driver must pass with care to avoid contact and maintain a safe path."}
{"id": "train_09981", "split": "train", "clip_key": "2020-0207-101955_030922_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "030922"}, "frames": ["2020-0207-101955_030922_movie_t-3.jpg", "2020-0207-101955_030922_movie_t-2.jpg", "2020-0207-101955_030922_movie_t-1.jpg", "2020-0207-101955_030922_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "The scene shows a bright urban intersection with multiple lanes, a planted median, and clear pavement as the ego vehicle approaches from the left lane. A white truck is moving through the center of the junction toward the right, cutting across the area ahead and into the path the ego vehicle would follow if it continues. A few pedestrians are standing at the left corner beside the zebra crossing near the roadway, but they remain on the curb. In the distance, some vehicles travel away on the near side of the median, while light oncoming traffic comes toward the camera on the far side, with glare from the right side near the buildings.", "hazard_reasoning": "The white truck is the main concern because it is in the intersection and moving across the ego vehicle’s intended path. Since it could enter or block that path, there is a potential collision risk, so the driver should stop."}
{"id": "train_09982", "split": "train", "clip_key": "2020-0207-101955_030922_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "030922"}, "frames": ["2020-0207-101955_030922_movie_t-3.jpg", "2020-0207-101955_030922_movie_t-2.jpg", "2020-0207-101955_030922_movie_t-1.jpg", "2020-0207-101955_030922_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "The scene shows a wide urban intersection with multiple lanes, a planted median, and clear pavement, with the ego vehicle coming forward in the left-side lane. A white truck is moving across the center of the junction toward the right, directly ahead of the ego path if the car continues. A few pedestrians are waiting at the left corner beside the zebra crossing, near the road but still on the curb. In the distance, some vehicles head away on the near side of the median while a small amount of oncoming traffic approaches on the far side. Strong sunlight from the right creates a bit of glare near the buildings.", "hazard_reasoning": "The main hazard is the white truck crossing through the intersection on the right side. Because it is already in the intersection and may enter the ego vehicle’s path, it creates a collision risk. The driver should stop and wait to avoid a crash."}
{"id": "train_09983", "split": "train", "clip_key": "2020-0203-114632_005514_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "005514"}, "frames": ["2020-0203-114632_005514_movie_t-3.jpg", "2020-0203-114632_005514_movie_t-2.jpg", "2020-0203-114632_005514_movie_t-1.jpg", "2020-0203-114632_005514_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "This is an urban two-way road with one lane in each direction, curving gently to the right on clean asphalt and marked by a solid double yellow centerline. Traffic around the bend is light to moderate. In the ego lane ahead, a motorcyclist is traveling away at a slow pace, which limits our speed somewhat. A small white van is farther ahead in the same lane and continues steadily through the curve. On the right side in the opposing lane, a bus is stopped at the curb and does not move. Along the left edge of our lane, orange cones and rope mark off the area around parked construction vehicles, reducing the width of the lane.", "hazard_reasoning": "The orange cone and the parked construction vehicle on the left side signal a road-construction obstruction. Together, the cones and truck encroach into part of the lane, so the driver needs to steer carefully to avoid a collision."}
{"id": "train_09984", "split": "train", "clip_key": "2020-0210-155354_004307_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0210-155354_004307_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0210-155354_004307_movie_t-3_augB1.jpg", "2020-0210-155354_004307_movie_t-2_augB1.jpg", "2020-0210-155354_004307_movie_t-1_augB1.jpg", "2020-0210-155354_004307_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the traffic cone.", "environment_perception": "A narrow two-way urban street leading into a railway underpass is lined with shops, and the road surface is dry. Traffic is moving very slowly in a short line, with a white SUV directly ahead in the ego lane inching forward and then pausing. Along the left side near the ego lane, a red traffic cone intrudes into the roadway while a black van is stopped at the curb, making the pass-through area tighter. On the right, a cyclist continues forward near the curb in the same direction, riding beside the queued traffic and close to the ego lane. Pedestrians are present on both sidewalks, and a no-parking sign plus underpass height markings can be seen.", "hazard_reasoning": "The main hazard is the red traffic cone on the left side of the ego vehicle, which partly obstructs the lane. This creates a clear lane obstacle, so the driver should stay alert and avoid any abrupt steering or lane deviation."}
{"id": "train_09985", "split": "train", "clip_key": "2020-0228-102841_009102_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "009102"}, "frames": ["2020-0228-102841_009102_movie_t-3.jpg", "2020-0228-102841_009102_movie_t-2.jpg", "2020-0228-102841_009102_movie_t-1.jpg", "2020-0228-102841_009102_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the white van", "environment_perception": "A moderate-traffic urban intersection sits on a two-lane road with no median and a smooth surface. The ego vehicle is traveling in left-hand traffic. In front, a white van in the ego lane slows down, then turns right at the junction and pulls away, temporarily setting the pace for the ego car. To the right on the cross street, several cars proceed straight through the intersection and stay clear of the ego lane. On the left sidewalk, pedestrians wait near the crosswalk without stepping into the road. Flexible orange posts line the right edge of the lane near the intersection.", "hazard_reasoning": "The main concern is the white van ahead, which is turning right and moving away while still occupying the ego lane. Its maneuver may cross or affect the ego vehicle's path, so the driver should yield to avoid a possible collision."}
{"id": "train_09986", "split": "train", "clip_key": "2020-0228-102841_009102_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "009102"}, "frames": ["2020-0228-102841_009102_movie_t-3.jpg", "2020-0228-102841_009102_movie_t-2.jpg", "2020-0228-102841_009102_movie_t-1.jpg", "2020-0228-102841_009102_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the white van", "environment_perception": "A moderate-traffic urban junction on a smooth two-lane road with no median. The ego vehicle is in left-hand traffic. In front of the ego car, a white van in the same lane slows and then turns right through the intersection, gradually moving away while affecting the ego vehicle’s pace. To the right, multiple cars continue straight across the cross street and stay out of the ego lane. Pedestrians are waiting on the left sidewalk by the crosswalk and do not step into the road. Flexible orange posts line the right side of the lane near the intersection.", "hazard_reasoning": "The main concern is the white van ahead turning right from the ego lane. Its movement through the junction can conflict with the ego vehicle’s path, so the driver should yield and stay prepared to avoid contact."}
{"id": "train_09987", "split": "train", "clip_key": "2020-0220-102630_028942_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "028942"}, "frames": ["2020-0220-102630_028942_movie_t-3.jpg", "2020-0220-102630_028942_movie_t-2.jpg", "2020-0220-102630_028942_movie_t-1.jpg", "2020-0220-102630_028942_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the scooter", "environment_perception": "This is an urban road with two lanes moving in the same direction, but traffic is slow and the left side is narrowed by roadwork ahead. A black scooter is halted directly in front of the ego vehicle in the left/ego lane because the construction setup blocks the way. Another scooter farther ahead near the center line is inching right to get around the obstruction, which could bring it into the ego path. In the right lane, a white car is creeping forward past the scooters, leaving little room for merging. A box truck is also queued ahead on the right, while a work truck and orange cones occupy the left side near the construction zone, with several workers and pedestrians standing along the left sidewalk.", "hazard_reasoning": "The main hazard is the black scooter stopped in the ego lane because road construction has blocked the lane ahead. Since it is directly in front of the car, the driver needs to carefully manoeuvre around it to avoid a collision caused by the lane obstruction."}
{"id": "train_09988", "split": "train", "clip_key": "2020-0220-102630_028942_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "028942"}, "frames": ["2020-0220-102630_028942_movie_t-3.jpg", "2020-0220-102630_028942_movie_t-2.jpg", "2020-0220-102630_028942_movie_t-1.jpg", "2020-0220-102630_028942_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the scooter", "environment_perception": "This is an urban roadway with two lanes moving in the same direction, but traffic is slow because roadwork is tightening the left lane ahead. A black scooter is stationary directly in front of the ego vehicle in the lane, blocked by the construction area. Farther ahead, another scooter near the center line is edging right to get around the blockage, which could bring it into the ego path. In the adjacent right lane, a white car is slowly passing the scooters, leaving less room for any merge. A box truck is queued farther up in the right lane, while a work truck and orange cones occupy the left side and form a bottleneck. Workers and pedestrians are also visible near the left-side work zone, adding clutter close to the road.", "hazard_reasoning": "The main hazard is the black scooter stopped in the ego lane because construction is blocking the route ahead. Since it sits directly in front of the ego car, the driver needs to proceed with caution and manoeuvre around it to avoid a collision caused by the lane obstruction."}
{"id": "train_09989", "split": "train", "clip_key": "2020-0226-140503_015810_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "015810"}, "frames": ["2020-0226-140503_015810_movie_t-3.jpg", "2020-0226-140503_015810_movie_t-2.jpg", "2020-0226-140503_015810_movie_t-1.jpg", "2020-0226-140503_015810_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "HIGH", "warning_content": "Be aware of the turning truck", "environment_perception": "A two-way urban street with mid-rise buildings has one lane in each direction marked by double white lines. The pavement is dry and slightly worn, traffic is light, and the left side is somewhat constrained near the curb. Ahead in the left lane, a white Sagawa truck is making a left turn and taking up space in the lane, which narrows the ego vehicle’s available path. In the opposite lane, a black car is approaching the camera while passing this obstruction, and parked cars on the right shoulder make the roadway feel tighter.", "hazard_reasoning": "The main hazard is the white truck ahead turning left. Its maneuver could extend into the ego vehicle’s path, so the driver should slow down and keep a safe buffer while it completes the turn."}
{"id": "train_09990", "split": "train", "clip_key": "2020-0220-102630_028942_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_028942_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_028942_movie_t-3_augB1.jpg", "2020-0220-102630_028942_movie_t-2_augB1.jpg", "2020-0220-102630_028942_movie_t-1_augB1.jpg", "2020-0220-102630_028942_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the scooter", "environment_perception": "This is an urban two-lane roadway with steady but slow traffic, and the left lane is narrowed ahead by roadworks. A black scooter is stationary directly in front of the ego vehicle in the ego lane because the construction blocks the way. Farther ahead, another scooter near the center line is edging right to get around the obstruction, which could bring it into the ego path. In the adjacent right lane, a white car is inching forward beside the scooters, leaving little space for a merge. A box truck is also queued ahead on the right, while a work truck and orange cones occupy the left side, forming a tight bottleneck. Workers and pedestrians are visible near the work area on the left sidewalk, adding nearby clutter.", "hazard_reasoning": "The main hazard is the black scooter stopped ahead in the ego lane due to the construction blockage. Because it sits directly in front of the ego car, the driver needs to carefully manoeuvre around it to prevent a collision caused by the lane obstruction."}
{"id": "train_09991", "split": "train", "clip_key": "2020-0228-102841_009102_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "009102"}, "frames": ["2020-0228-102841_009102_movie_t-3.jpg", "2020-0228-102841_009102_movie_t-2.jpg", "2020-0228-102841_009102_movie_t-1.jpg", "2020-0228-102841_009102_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the white van", "environment_perception": "A multi-lane urban junction with smooth pavement and moderate traffic is visible. The ego vehicle is traveling in left-hand traffic. In the lane ahead, a white van slows and then turns right through the intersection, moving away while temporarily setting the pace for the ego car. On the cross street to the right, several cars continue straight through the junction and stay clear of the ego lane. Pedestrians are waiting on the left sidewalk near the crosswalk and do not step into the road. Flexible orange posts line the right edge of the lane near the intersection.", "hazard_reasoning": "The main concern is the white van ahead, which is turning right and shifting away from the ego vehicle while still occupying the ego lane area. Its turning movement could conflict with the ego vehicle’s path, so the driver should yield to prevent a possible collision."}
{"id": "train_09992", "split": "train", "clip_key": "2020-0210-155354_007758_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "007758"}, "frames": ["2020-0210-155354_007758_movie_t-3.jpg", "2020-0210-155354_007758_movie_t-2.jpg", "2020-0210-155354_007758_movie_t-1.jpg", "2020-0210-155354_007758_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the white van", "environment_perception": "This is a busy urban two-way road with one lane in each direction, no median, and clear pavement. Traffic is slow and backed up, with several vehicles ahead in the ego lane creeping forward. On the right, a silver minivan in the opposing lane comes toward the camera and stays close to the center line while remaining in its lane. In the distance at an intersection, a white van moves from left to right across the roadway. Parked cars along the left curb also reduce the available space near the camera.", "hazard_reasoning": "The key hazard is the white van crossing from left to right through the intersection ahead. Since it is moving across the path in front of the ego vehicle, it could become an unexpected conflict point, so it should be monitored closely."}
{"id": "train_09993", "split": "train", "clip_key": "2020-0220-102630_028942_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0220-102630_028942_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0220-102630_028942_movie_t-3_augB1.jpg", "2020-0220-102630_028942_movie_t-2_augB1.jpg", "2020-0220-102630_028942_movie_t-1_augB1.jpg", "2020-0220-102630_028942_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the scooter", "environment_perception": "This is an urban roadway with two lanes moving in the same direction, where the pavement is clear but traffic is slow and compressed because roadwork is narrowing the left lane ahead. A black scooter is standing still directly in front of the ego vehicle in the lane, blocked by the construction area. Farther ahead, another scooter near the center line is inching rightward to get around the obstruction, which could bring it into the ego car’s path. In the adjacent right lane, a white car is slowly passing the scooters, leaving little room for anything merging from the blocked lane. A box truck is also queued up ahead on the right, while a work truck and orange cones line the left side, forming a bottleneck. Workers and pedestrians are visible near the work zone on the left sidewalk, adding clutter close to the roadway.", "hazard_reasoning": "The main hazard is the stopped black scooter in the ego lane, held in place by the ongoing construction and directly ahead of the ego car. Because the lane is obstructed, the driver needs to proceed with caution and manoeuvre around the scooter to avoid a collision."}
{"id": "train_09994", "split": "train", "clip_key": "2020-0205-103411_008565_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-103411_008565_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-103411_008565_movie_t-3_augB1.jpg", "2020-0205-103411_008565_movie_t-2_augB1.jpg", "2020-0205-103411_008565_movie_t-1_augB1.jpg", "2020-0205-103411_008565_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the construction sign", "environment_perception": "The scene shows an urban two-way street bending left between tall buildings. The road surface is clear, with the opposing lane marked in red and divided by a white hatched separator, and traffic remains light to moderate. Along the left side near the ego lane, a pedestrian emerges from beside a parked SUV and keeps walking close to the lane edge. Farther ahead in the ego lane, a small flatbed truck is moving slowly near a roadside work zone, and a red construction arrow sign on the left guides traffic around it. In the opposite direction, a white mini-truck approaches in the red lane, while another truck is parked by the right curb and more parked vehicles on the left reduce the available roadway.", "hazard_reasoning": "The most important cue is the red arrow construction sign on the left side of the road. It signals road works ahead and a likely change or restriction in lane usage, so the driver needs to treat it as the primary hazard and proceed carefully."}
{"id": "train_09995", "split": "train", "clip_key": "2020-0210-155354_007758_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "007758"}, "frames": ["2020-0210-155354_007758_movie_t-3.jpg", "2020-0210-155354_007758_movie_t-2.jpg", "2020-0210-155354_007758_movie_t-1.jpg", "2020-0210-155354_007758_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the white van", "environment_perception": "This is an urban two-way road with one lane in each direction and no median, with smooth pavement and congested, slow-moving traffic. A line of cars ahead in the ego lane is creeping forward, limiting progress. On the right, a silver minivan in the opposing lane comes toward the camera and passes close to the center line while staying in its lane. Farther ahead at an intersection, a white van moves from left to right across the roadway, briefly affecting the traffic flow ahead. Parked cars along the left curb also reduce the available space near the camera.", "hazard_reasoning": "The white van is crossing from the left side to the right side through the intersection ahead. Since it is moving across the path in front of you, it could enter your course unexpectedly, so it should be monitored as the main hazard."}
{"id": "train_09996", "split": "train", "clip_key": "2020-0210-155354_007758_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "007758"}, "frames": ["2020-0210-155354_007758_movie_t-3.jpg", "2020-0210-155354_007758_movie_t-2.jpg", "2020-0210-155354_007758_movie_t-1.jpg", "2020-0210-155354_007758_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the white van", "environment_perception": "This is an urban two-way road with a single lane in each direction, no median, and smooth pavement. Traffic is dense and moving slowly, with several vehicles queued ahead in the ego lane. A silver minivan in the oncoming lane on the right comes forward near the center line but stays in its lane. In the distance at an intersection, a white van moves from left to right across the roadway. Parked cars along the left curb also make the available lane feel narrower near the camera.", "hazard_reasoning": "The main concern is the white van crossing left to right through the intersection ahead. Since it is moving across the path in front of the ego vehicle, it could affect the driving line unexpectedly, so it should be treated as the key hazard and monitored closely."}
{"id": "train_09997", "split": "train", "clip_key": "2020-0205-103411_008565_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0205-103411_008565_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0205-103411_008565_movie_t-3_augB1.jpg", "2020-0205-103411_008565_movie_t-2_augB1.jpg", "2020-0205-103411_008565_movie_t-1_augB1.jpg", "2020-0205-103411_008565_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the construction sign", "environment_perception": "The scene shows an urban two-way street bending left between tall buildings. The road surface is clear, with the opposing lane marked in red and divided from the ego side by a white hatched buffer. Traffic is moderate and several vehicles reduce the open space: a pedestrian moves out from the left side near a parked SUV and stays close to the lane edge, a small flatbed truck ahead in the ego lane is slowing by a roadside work zone, and parked vehicles on both sides further tighten the roadway. A red arrow construction sign is posted on the left, guiding traffic around the work area. An oncoming white mini-truck is visible in the red lane, with another truck stopped near the right curb.", "hazard_reasoning": "The most important hazard is the construction sign on the left. It warns of road works ahead and possible changes to lane use or vehicle path, so the driver needs to treat this as a serious hazard and proceed carefully."}
{"id": "train_09998", "split": "train", "clip_key": "2020-0205-152530_019419_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "019419"}, "frames": ["2020-0205-152530_019419_movie_t-3.jpg", "2020-0205-152530_019419_movie_t-2.jpg", "2020-0205-152530_019419_movie_t-1.jpg", "2020-0205-152530_019419_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the van", "environment_perception": "The scene shows a straight urban road with two ego-direction lanes on dry, well-maintained pavement, while opposing traffic flows on the right side. A gray van is directly ahead in the ego lane, stationary and indicating a right turn. Farther ahead, two cars continue through the same direction toward a signalized junction at roughly matching speed, helping define the flow. Several oncoming vehicles pass on the far side of the centerline without affecting the ego path. An overhead traffic light is visible ahead, and bright sunlight from the right creates glare and lowers visibility near the curb.", "hazard_reasoning": "The main risk is the gray van stopped in the ego lane with its right signal on. It is blocking the lane and could move across unexpectedly while turning, so the driver should prepare to go around it."}
{"id": "train_09999", "split": "train", "clip_key": "2020-0205-103411_008565_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "008565"}, "frames": ["2020-0205-103411_008565_movie_t-3.jpg", "2020-0205-103411_008565_movie_t-2.jpg", "2020-0205-103411_008565_movie_t-1.jpg", "2020-0205-103411_008565_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the construction sign", "environment_perception": "A two-way urban street bends left between tall buildings. The road surface is clear, the opposing lane is red-paved with a white hatched divider, and overall traffic is light to moderate. Near the left edge by the ego lane, a pedestrian emerges from beside a parked SUV and keeps moving along the lane boundary close to the vehicle’s path. Farther ahead in the ego lane, a small flatbed truck is slowing near a roadside work zone, reducing available space, and a red arrow construction sign on the left points traffic around it. In the opposite direction, a white mini-truck is coming toward the camera in the red lane, with another truck parked by the right curb, while more parked vehicles on the left further tighten the roadway.", "hazard_reasoning": "The key hazard is the red arrow construction sign on the left, which signals road works ahead and possible changes to lane usage. Because the work area can constrain the driving path, the situation calls for high caution."}
{"id": "train_10000", "split": "train", "clip_key": "2020-0205-103411_008565_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "008565"}, "frames": ["2020-0205-103411_008565_movie_t-3.jpg", "2020-0205-103411_008565_movie_t-2.jpg", "2020-0205-103411_008565_movie_t-1.jpg", "2020-0205-103411_008565_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the construction sign", "environment_perception": "The scene shows an urban two-way street bending left between tall buildings. The road surface is clear, with the opposing lane colored red and split off by a white hatched divider, and traffic remains light to moderate. Near the left edge of the ego lane, a pedestrian emerges from beside a parked SUV and keeps moving along the lane boundary close to the vehicle’s path. Farther ahead, a small flatbed truck is slowing near a roadside work zone, and a red arrow construction sign on the left channels traffic around it. In the opposite direction, a white mini-truck approaches in the red lane, another truck is parked by the right curb, and more parked vehicles on the left further restrict the open space.", "hazard_reasoning": "The most relevant hazard is the red arrow construction sign on the left side. It warns of road work ahead and possible lane changes or restrictions, so the driver should stay alert and proceed carefully."}
{"id": "train_10001", "split": "train", "clip_key": "2020-0205-152530_019419_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "019419"}, "frames": ["2020-0205-152530_019419_movie_t-3.jpg", "2020-0205-152530_019419_movie_t-2.jpg", "2020-0205-152530_019419_movie_t-1.jpg", "2020-0205-152530_019419_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the van", "environment_perception": "A straight urban road with two lanes in the ego direction extends ahead on dry, well-maintained pavement, while opposing traffic flows on the right side of the centerline. A gray van is stopped just ahead in the ego lane with its right turn signal on. Farther ahead, two vehicles continue toward a signal-controlled intersection at a steady pace, while a few oncoming cars pass normally in their own lanes. An overhead traffic light is visible, and bright sun glare from the right makes the curbside area harder to see clearly.", "hazard_reasoning": "The gray van ahead is stationary in the ego lane and indicating a right turn, so it obstructs the lane and could move across the path without warning. The safest interpretation is to prepare to pass or maneuver around it."}
{"id": "train_10002", "split": "train", "clip_key": "2020-0205-152530_019419_movie", "source": {"subset": "drama", "scenario": "2020-0205-152530", "frame": "019419"}, "frames": ["2020-0205-152530_019419_movie_t-3.jpg", "2020-0205-152530_019419_movie_t-2.jpg", "2020-0205-152530_019419_movie_t-1.jpg", "2020-0205-152530_019419_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the van", "environment_perception": "The scene shows a straight urban road with two lanes in the ego direction on dry, well-maintained pavement, while oncoming traffic flows in lanes on the right side of the centerline. A gray van is immediately ahead in the ego lane, stationary and indicating a right turn. Farther ahead, two cars continue toward a signalized junction at a similar speed, effectively matching the ego vehicle’s flow. Several oncoming vehicles pass on the opposite side without affecting the ego lane. An overhead traffic light is visible, and bright sun glare from the right makes the curb area harder to see.", "hazard_reasoning": "The main concern is the gray van stopped in the ego lane with its right indicator on. It is blocking the lane and may move across the path while turning, so the driver needs to go around it."}
{"id": "train_10003", "split": "train", "clip_key": "2020-0203-114632_004965_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "004965"}, "frames": ["2020-0203-114632_004965_movie_t-3.jpg", "2020-0203-114632_004965_movie_t-2.jpg", "2020-0203-114632_004965_movie_t-1.jpg", "2020-0203-114632_004965_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "The scene shows an urban two-way road with one narrow lane in each direction, bending slightly to the right. The road surface appears dry and clear, while traffic is moderate and slowed by a small work zone ahead. In the ego lane, a white flatbed truck is stopped near the curb and takes up part of the lane, narrowing the available space. Ahead of it, a worker is bending down to set out orange cones, and one cone is positioned directly in front of the ego vehicle. On the right side, white vans in the opposite direction continue straight past the area.", "hazard_reasoning": "The cone placed directly ahead of the ego car signals an active roadwork or lane blockage. Because the lane is obstructed and the work area is immediately in front, the driver should stop to avoid entering the construction zone and reduce collision risk."}
{"id": "train_10004", "split": "train", "clip_key": "2020-0203-114632_004965_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "004965"}, "frames": ["2020-0203-114632_004965_movie_t-3.jpg", "2020-0203-114632_004965_movie_t-2.jpg", "2020-0203-114632_004965_movie_t-1.jpg", "2020-0203-114632_004965_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "This is an urban two-way road with a single narrow lane in each direction and a gentle right-hand curve. The road surface is dry and clear, and traffic is moderate, though it slows near a small work zone. Ahead in the ego lane, a white flatbed truck is stopped near the curb and takes up part of the lane, limiting the ego vehicle’s path. Beyond the crosswalk, a worker in front of the truck is bending down to set orange traffic cones, with one cone positioned directly in front of the ego car. On the right side, white vans coming the opposite way continue straight past the work area and pass close by.", "hazard_reasoning": "The cone placed directly ahead of the ego vehicle signals an active lane obstruction or construction area. Because the work zone is blocking the lane, the safest action is to stop and avoid driving into the area."}
{"id": "train_10005", "split": "train", "clip_key": "2020-0226-140503_101815_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "101815"}, "frames": ["2020-0226-140503_101815_movie_t-3.jpg", "2020-0226-140503_101815_movie_t-2.jpg", "2020-0226-140503_101815_movie_t-1.jpg", "2020-0226-140503_101815_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the slowing van ahead.", "environment_perception": "A dry, smooth urban arterial with multiple lanes and painted directional arrows leads toward a signalized intersection, with moderate traffic present. A box truck is traveling ahead in the center lane and moving with the ego vehicle. Farther ahead on the left, a white van is slowing in the left lane as it prepares to turn off onto a side street. On the right, a white car is entering the intersection toward our road and appears ready to merge into the same direction. A cyclist is waiting on the left sidewalk near the crosswalk and is not moving into the roadway.", "hazard_reasoning": "The main concern is the white van ahead on the left, which is reducing speed to make a turn onto another road. Because it is in the left lane and slowing, the driver should anticipate its turning movement and possible interference with forward progress. This creates a moderate hazard that calls for preparation and reduced speed."}
{"id": "train_10006", "split": "train", "clip_key": "2020-0218-103119_022405_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "022405"}, "frames": ["2020-0218-103119_022405_movie_t-3.jpg", "2020-0218-103119_022405_movie_t-2.jpg", "2020-0218-103119_022405_movie_t-1.jpg", "2020-0218-103119_022405_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the traffic cone", "environment_perception": "The scene shows an urban divided arterial with two lanes in each direction, bordered by mid-rise buildings and a smooth roadway with moderate traffic. A narrow median with flexible posts splits the opposing flow, and a speed marking of 50 is visible on the pavement. A white van ahead in the ego lane is moving toward a pedestrian overpass and is slightly limiting the ego vehicle’s pace. A silver sedan farther ahead on the left continues in the same direction close to the curb and stays within its lane. On the right, several small trucks travel in the oncoming lanes at a steady speed, still separated by the median. An orange and white traffic cone is placed along the right edge of the ego lane near the median.", "hazard_reasoning": "The cone on the right side of the ego lane is the key hazard. It suggests nearby road work, so the driver should stay alert and may need to slow down or adjust position."}
{"id": "train_10007", "split": "train", "clip_key": "2020-0226-140503_101815_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "101815"}, "frames": ["2020-0226-140503_101815_movie_t-3.jpg", "2020-0226-140503_101815_movie_t-2.jpg", "2020-0226-140503_101815_movie_t-1.jpg", "2020-0226-140503_101815_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the slowing van ahead.", "environment_perception": "This is a multi-lane urban arterial leading to a signalized intersection, with painted lane arrows, no physical median, dry pavement, and moderate traffic. A box truck is traveling ahead in the center lane toward the light, roughly matching the ego vehicle’s pace. Farther left, a white van in the left lane is slowing as it prepares to turn into a side street. On the right, a white car is entering the intersection toward our roadway and appears to be merging into the same direction. A cyclist is waiting on the left sidewalk near the crosswalk and is not moving into the road.", "hazard_reasoning": "The main concern is the white van ahead on the left, which is slowing down to make a turn onto another road. That turning motion and reduced speed create a need for the driver to anticipate the van’s movement and adjust speed or position if necessary."}
{"id": "train_10008", "split": "train", "clip_key": "2020-0218-103119_022405_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "022405"}, "frames": ["2020-0218-103119_022405_movie_t-3.jpg", "2020-0218-103119_022405_movie_t-2.jpg", "2020-0218-103119_022405_movie_t-1.jpg", "2020-0218-103119_022405_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the traffic cone", "environment_perception": "The scene shows a divided urban roadway with two lanes in each direction, bordered by mid-rise buildings and a smooth surface with moderate traffic. A slim median with flexible posts separates opposing traffic, and a painted “50” speed marking appears on the road. A white van ahead in the ego lane continues forward near a pedestrian overpass, slightly slowing the flow. Ahead-left, a silver sedan travels in the same direction close to the curb and stays within its lane. On the right, several small trucks move toward the camera in the opposite lanes beyond the median. An orange-and-white traffic cone is positioned at the right edge of the ego lane near the median.", "hazard_reasoning": "The visible cone on the right side of the ego lane indicates possible road work in the area. It is the main hazard because it may call for extra caution or a slight lane adjustment while driving through this section."}
{"id": "train_10009", "split": "train", "clip_key": "2020-0226-140503_101815_movie", "source": {"subset": "drama", "scenario": "2020-0226-140503", "frame": "101815"}, "frames": ["2020-0226-140503_101815_movie_t-3.jpg", "2020-0226-140503_101815_movie_t-2.jpg", "2020-0226-140503_101815_movie_t-1.jpg", "2020-0226-140503_101815_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Be aware of the slowing van ahead.", "environment_perception": "The scene shows a multi-lane urban arterial with painted lane arrows and no physical median leading toward a signalized intersection on dry, smooth pavement with moderate traffic. A box truck is traveling ahead in the center lane toward the light, roughly matching the ego vehicle’s pace. Farther left, a white van is slowing in the left lane as it prepares to turn onto a side street. From the right, a white car is entering the intersection and appears ready to merge into the same direction of travel. A cyclist is waiting on the left sidewalk near the crosswalk and does not enter the road.", "hazard_reasoning": "The main concern is the white van ahead on the left, which is decelerating while positioning for a turn onto another road. Because it is slowing in the travel lane and may shift position as it turns, the driver should anticipate its movement and be ready to reduce speed or adjust course if needed."}
{"id": "train_10010", "split": "train", "clip_key": "2020-0205-103411_094696_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "094696"}, "frames": ["2020-0205-103411_094696_movie_t-3.jpg", "2020-0205-103411_094696_movie_t-2.jpg", "2020-0205-103411_094696_movie_t-1.jpg", "2020-0205-103411_094696_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be cautious of traffic cone", "environment_perception": "The scene shows a multi-lane urban roadway with steady traffic and a smooth surface, bordered by a concrete barrier on the far left. The ego vehicle is traveling in the center lane. A small flatbed truck is directly ahead in the same lane and moving at a similar pace, which limits forward progress. A white sedan in the left lane is keeping pace slightly ahead and makes a leftward lane change less practical. On the right side, a white car is moving through the adjacent lane near a narrowing section, while an orange traffic cone stands along the right edge of the ego lane, cutting down available space and hinting at a lane merge. Vehicles farther ahead remain on course without sudden movement.", "hazard_reasoning": "The orange traffic cone on the right side of the lane is the key hazard. It suggests possible construction activity or lane restriction ahead, so the driver should be prepared for a reduced driving area and proceed carefully."}
{"id": "train_10011", "split": "train", "clip_key": "2020-0205-103411_094696_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "094696"}, "frames": ["2020-0205-103411_094696_movie_t-3.jpg", "2020-0205-103411_094696_movie_t-2.jpg", "2020-0205-103411_094696_movie_t-1.jpg", "2020-0205-103411_094696_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be cautious of traffic cone", "environment_perception": "The scene shows a multi-lane urban arterial with smooth road surface and moderate, consistent traffic. A concrete barrier runs along the far left. The ego vehicle is traveling in the center lane. Ahead in the same lane, a small flatbed truck is moving steadily and is closing off forward space. To the left, a white sedan is traveling slightly faster beside the ego vehicle, making a lane change left less practical. On the right, a white car is moving in the adjacent lane near a taper, while an orange traffic cone sits on the right edge of the ego lane, narrowing the available space and suggesting a merge area. Vehicles farther ahead remain on course without sudden movement.", "hazard_reasoning": "The key hazard is the orange traffic cone placed on the right side of the lane. This likely warns of road work or lane restriction ahead, so the situation requires immediate caution because the lane may narrow or change."}
{"id": "train_10012", "split": "train", "clip_key": "titan_clip_932_000402_movie", "source": {"subset": "titan", "scenario": "clip_932", "frame": "000402"}, "frames": ["titan_clip_932_000402_movie_t-3.jpg", "titan_clip_932_000402_movie_t-2.jpg", "titan_clip_932_000402_movie_t-1.jpg", "titan_clip_932_000402_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Be cautious of slowing vehicle ahead.", "environment_perception": "This is an urban two-way roadway with one lane in each direction, bordered by mid-rise buildings. The road surface appears dry and even, and traffic is moderate with normal opposing flow. In front of the ego vehicle, a gray sedan in the lane ahead slows and starts a left turn at a side street, limiting forward progress. A white box truck comes toward us in the opposite lane on the right and continues past without drifting into our path. Several vehicles farther ahead in our lane remain slow behind the turning sedan, and parked cars along the left curb make the usable lane feel a bit tighter.", "hazard_reasoning": "The main concern is the gray sedan ahead, which is slowing as it begins a left turn. Its decreasing speed may force sudden braking or an unexpected slowdown for the ego vehicle, so the driver should stay alert and adjust speed smoothly."}
{"id": "train_10013", "split": "train", "clip_key": "2020-0213-143552_009674_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009674"}, "frames": ["2020-0213-143552_009674_movie_t-3.jpg", "2020-0213-143552_009674_movie_t-2.jpg", "2020-0213-143552_009674_movie_t-1.jpg", "2020-0213-143552_009674_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Manoeuvre around the cone carefully.", "environment_perception": "This is an urban two-way road with one lane in each direction, bordered by mid-rise buildings and a smooth surface. A dark hatchback ahead in the ego lane is moving steadily and appears to be guiding the pace. On the opposite side, a silver sedan travels toward the camera in its own lane, while a white truck farther right near the curb also moves slowly with the opposing traffic. Several orange traffic cones, including one clearly placed in the right lane near the centerline, along with a small sign, constrict the oncoming lane and indicate a temporary road obstruction.", "hazard_reasoning": "The main hazard is the orange traffic cone positioned in the right lane. It creates a localized obstruction that the driver must steer around carefully to avoid contact and keep a safe path through the lane."}
{"id": "train_10014", "split": "train", "clip_key": "titan_clip_932_000402_movie", "source": {"subset": "titan", "scenario": "clip_932", "frame": "000402"}, "frames": ["titan_clip_932_000402_movie_t-3.jpg", "titan_clip_932_000402_movie_t-2.jpg", "titan_clip_932_000402_movie_t-1.jpg", "titan_clip_932_000402_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Be cautious of slowing vehicle ahead.", "environment_perception": "This is an urban two-way road with one lane in each direction, bordered by mid-rise buildings. The road surface looks dry and clear, and traffic in both directions is moderate. In the ego lane ahead, a gray sedan is slowing as it starts a left turn at a side street, reducing the pace of vehicles behind it. A white box truck is coming toward us in the opposite lane on the right and continues normally without drifting over. Several vehicles farther ahead in our lane are also moving slowly behind the turning sedan, while parked cars along the left curb make the lane feel a bit tighter.", "hazard_reasoning": "The main hazard is the gray sedan ahead, since it is slowing down to make a left turn. Its reduced speed and turning movement can force the ego vehicle to brake or adjust speed unexpectedly, so it should be monitored closely."}
{"id": "train_10015", "split": "train", "clip_key": "2020-0213-143552_009674_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "009674"}, "frames": ["2020-0213-143552_009674_movie_t-3.jpg", "2020-0213-143552_009674_movie_t-2.jpg", "2020-0213-143552_009674_movie_t-1.jpg", "2020-0213-143552_009674_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Manoeuvre around the cone carefully.", "environment_perception": "The scene shows an urban two-way road with one lane in each direction, bordered by mid-rise buildings and a clear, lightly to moderately trafficked surface. A dark hatchback ahead in the ego lane continues forward at a steady pace. On the right side, an oncoming silver sedan stays in its lane and passes opposite the ego vehicle, while a white truck farther right near the curb also moves slowly with the opposing traffic. Several orange traffic cones, including one clearly placed in the right lane near the centerline, together with a small sign, restrict the oncoming lane and form a temporary road obstruction.", "hazard_reasoning": "The most important hazard is the orange cone positioned in the right lane. It creates a construction-related obstruction that the driver must steer around carefully to avoid impact and keep the vehicle aligned safely."}
{"id": "train_10016", "split": "train", "clip_key": "titan_clip_932_000402_movie", "source": {"subset": "titan", "scenario": "clip_932", "frame": "000402"}, "frames": ["titan_clip_932_000402_movie_t-3.jpg", "titan_clip_932_000402_movie_t-2.jpg", "titan_clip_932_000402_movie_t-1.jpg", "titan_clip_932_000402_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Be cautious of slowing vehicle ahead.", "environment_perception": "This is an urban two-way road with one lane in each direction, bordered by mid-rise buildings. The road surface looks dry and clear, and traffic is moderate with vehicles flowing steadily in the opposite direction. In front of the ego vehicle, a gray sedan in the same lane is slowing and starting a left turn at a side street, which is affecting the pace ahead. A white box truck comes toward us in the opposite lane on the right and continues past without drifting into our path. Several vehicles farther ahead in our lane are also moving slowly behind the turning sedan, while parked cars along the left curb make the lane feel slightly tighter.", "hazard_reasoning": "The main hazard is the gray sedan ahead, since it is slowing to complete a left turn. Its reduced speed may force the driver to brake more than expected or respond to sudden slowing in front, so attention is needed to adjust speed safely."}
{"id": "train_10017", "split": "train", "clip_key": "2020-0228-150133_021583_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-150133_021583_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-150133_021583_movie_t-3_augB1.jpg", "2020-0228-150133_021583_movie_t-2_augB1.jpg", "2020-0228-150133_021583_movie_t-1_augB1.jpg", "2020-0228-150133_021583_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "The scene shows an urban two-way road leading to a level railroad crossing, with one lane in each direction, no median, and clear pavement. Traffic is moderate and backed up on both sides. A yellow-and-black gate is lowered ahead of the ego vehicle, closing off the lane at the crossing. Past the barrier, several pedestrians are moving left to right across the tracks and crosswalk, limiting passage. On the far side, a silver van facing the ego is stopped at the line behind its own gate. A bicyclist is also waiting near the right curb beyond the crossing and could move into the lane when it opens. Railroad crossing signs and equipment are present.", "hazard_reasoning": "The main hazard is the lowered yellow-and-black barrier directly in front of the ego car. Since the gate is down, the road is blocked and the crossing is active, so the driver must stop to avoid a collision and follow the crossing controls."}
{"id": "train_10018", "split": "train", "clip_key": "2020-0131-103016_019802_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "019802"}, "frames": ["2020-0131-103016_019802_movie_t-3.jpg", "2020-0131-103016_019802_movie_t-2.jpg", "2020-0131-103016_019802_movie_t-1.jpg", "2020-0131-103016_019802_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A multi-lane urban road approaches a signalized intersection, with heavy queued traffic and a red curb lane along the left side. In the ego lane, a white van is directly ahead and is slowing as it prepares to turn left at the intersection. To the right, same-direction vehicles, including a black van and a red taxi, are inching forward toward the stop line. Several pedestrians are standing on the left sidewalk near the crosswalk, while the traffic signal ahead is red and overhead blue signs indicate Shinjuku, Ichigaya, and Hanzomon.", "hazard_reasoning": "The main concern is the white van ahead, which is decelerating because it intends to make a left turn. Since it is directly in front of the ego vehicle, its slowing and turning motion creates a following-distance risk and could lead to a rear-end collision if the driver does not reduce speed in time."}
{"id": "train_10019", "split": "train", "clip_key": "2020-0131-103016_019802_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "019802"}, "frames": ["2020-0131-103016_019802_movie_t-3.jpg", "2020-0131-103016_019802_movie_t-2.jpg", "2020-0131-103016_019802_movie_t-1.jpg", "2020-0131-103016_019802_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "This is a busy urban roadway with two lanes traveling in the same direction and a red curb lane on the left, approaching a signalized intersection. Traffic is backed up near the stop line. A white van ahead in the ego lane is moving slowly and appears to be turning left at the intersection, limiting the ego vehicle’s progress. In the adjacent right lane, same-direction vehicles such as a black van and a red taxi are also creeping forward. Several pedestrians are waiting on the left sidewalk near the crosswalk. The signal ahead is red, and blue overhead signs indicate Shinjuku, Ichigaya, and Hanzomon.", "hazard_reasoning": "The main hazard is the white van directly ahead, which is slowing because it intends to turn left at the intersection. Since it remains in the ego lane and is reducing speed in front of the car, it creates a potential conflict if the driver does not adjust speed and following distance. The safest response is to slow down and keep space until the van completes its turn."}
{"id": "train_10020", "split": "train", "clip_key": "2020-0228-150133_021583_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0228-150133_021583_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0228-150133_021583_movie_t-3_augB1.jpg", "2020-0228-150133_021583_movie_t-2_augB1.jpg", "2020-0228-150133_021583_movie_t-1_augB1.jpg", "2020-0228-150133_021583_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "The scene shows an urban two-way road leading to a level railroad crossing, with one lane in each direction, no median, and clear pavement; traffic is moderate and both sides have queues. A yellow-and-black barrier is down across the lane directly ahead of the ego vehicle, preventing passage. Past the gate, several pedestrians move left to right across the tracks and crosswalk, further limiting movement. On the opposite side, a silver van is stopped at the line facing the ego vehicle behind its own gate. A bicyclist is waiting near the right curb beyond the crossing and could enter the lane when it opens. Crossing signs and railway equipment are visible.", "hazard_reasoning": "The most immediate hazard is the lowered yellow-and-black barrier in front of the ego vehicle. Since it blocks the roadway and marks an active railroad crossing, the driver must stop and wait to avoid a collision and to follow the crossing control."}
{"id": "train_10021", "split": "train", "clip_key": "2020-0203-114632_005514_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_005514_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_005514_movie_t-3_augB1.jpg", "2020-0203-114632_005514_movie_t-2_augB1.jpg", "2020-0203-114632_005514_movie_t-1_augB1.jpg", "2020-0203-114632_005514_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "This is an urban two-way road with one lane in each direction, bending gently to the right and marked by a solid double yellow centerline on clean asphalt. Traffic around the curve is light to moderate. In front of the ego vehicle, a motorcyclist continues ahead at low speed, and a small white van is also traveling steadily in the same lane farther up the road. On the right side in the opposing lane, a bus is stopped at the curb. On the left edge of our lane, orange cones and rope mark off a parked construction truck area, narrowing the available roadway.", "hazard_reasoning": "The cones on the left clearly mark a parked construction vehicle that encroaches into the lane. Together with the truck, they partially obstruct the path and reduce clearance, so the driver needs to pass with caution to avoid contact."}
{"id": "train_10022", "split": "train", "clip_key": "2020-0131-103016_019802_movie", "source": {"subset": "drama", "scenario": "2020-0131-103016", "frame": "019802"}, "frames": ["2020-0131-103016_019802_movie_t-3.jpg", "2020-0131-103016_019802_movie_t-2.jpg", "2020-0131-103016_019802_movie_t-1.jpg", "2020-0131-103016_019802_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "A signalized urban road with two lanes moving in the same direction and a red curb lane on the left is filled with queued traffic on smooth pavement and no median. A white van ahead in the ego lane is slowing and positioning to turn left at the intersection, causing the ego vehicle to match its speed. In the right lane, traffic including a black van and a red taxi is inching toward the stop line. A few pedestrians are waiting on the left sidewalk by the crosswalk. The light ahead is red, and blue overhead signs indicate Shinjuku, Ichigaya, and Hanzomon.", "hazard_reasoning": "The main hazard is the white van in front of the ego car, since it is decelerating to make a left turn at the intersection. Because it is directly ahead and slowing, the driver needs to lower speed and keep a safe gap to avoid a possible collision as the van completes the turn."}
{"id": "train_10023", "split": "train", "clip_key": "2020-0218-103119_001800_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "001800"}, "frames": ["2020-0218-103119_001800_movie_t-3.jpg", "2020-0218-103119_001800_movie_t-2.jpg", "2020-0218-103119_001800_movie_t-1.jpg", "2020-0218-103119_001800_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "This is an urban multi-lane street beside tall buildings, with smooth asphalt and traffic slowing near an intersection. A white van directly ahead in the ego lane has its right indicator on and is coming to a stop while waiting for oncoming traffic before turning, limiting the ego vehicle’s progress. A smaller white van ahead-left in the neighboring lane keeps moving straight and edges slightly ahead. A silver sedan ahead-right continues straight at a steady pace, moving past the slowing vehicles and reducing the open space ahead. A side road appears on the right, along with a visible crosswalk and open curb area.", "hazard_reasoning": "The main hazard is the white van ahead in the ego lane making a right turn. It is yielding to oncoming vehicles at the intersection, so the ego driver needs to stop and avoid moving into the intersection on red. This creates a collision risk if the ego vehicle continues forward."}
{"id": "train_10024", "split": "train", "clip_key": "2020-0218-103119_001800_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "001800"}, "frames": ["2020-0218-103119_001800_movie_t-3.jpg", "2020-0218-103119_001800_movie_t-2.jpg", "2020-0218-103119_001800_movie_t-1.jpg", "2020-0218-103119_001800_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "The scene shows a multilane urban road with tall buildings and a smooth surface as traffic slows near an intersection. A white van directly ahead in the ego lane is signaling a right turn and comes to a stop while yielding to oncoming vehicles, which limits the ego car’s forward progress. In the adjacent lane ahead-left, a smaller white van keeps moving straight and edges forward. Ahead-right, a silver sedan also continues straight at a steady pace, moving past the slowing vehicles and reducing the open space ahead. On the right, a side street with a visible crosswalk and clear curb area is present.", "hazard_reasoning": "The key hazard is the white van immediately in front of the ego vehicle, which is preparing to turn right and is currently yielding to traffic. Because it is stopped at a red light while waiting, the ego driver should also stop and avoid entering the intersection, as moving forward could create a collision risk."}
{"id": "train_10025", "split": "train", "clip_key": "2020-0203-114632_005514_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_005514_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_005514_movie_t-3_augB1.jpg", "2020-0203-114632_005514_movie_t-2_augB1.jpg", "2020-0203-114632_005514_movie_t-1_augB1.jpg", "2020-0203-114632_005514_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Carefully manoeuvre around the cones", "environment_perception": "The scene shows an urban two-way road with a single lane each way, bending slightly to the right on dry pavement and marked by a double yellow centerline. Traffic is moderate near the curve. In front of the ego vehicle, a motorcyclist is moving away slowly in the same lane, and a small white van continues ahead through the bend. A bus is stopped by the curb in the opposite lane. On the left side of our lane, orange cones and a rope barrier mark off a parked construction truck, reducing the available driving space.", "hazard_reasoning": "The cones on the left signal road construction and a parked work vehicle encroaching into the lane. Because this setup partly blocks the usable path, the driver needs to steer carefully to avoid contact."}
{"id": "train_10026", "split": "train", "clip_key": "2020-0210-155354_004307_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "004307"}, "frames": ["2020-0210-155354_004307_movie_t-3.jpg", "2020-0210-155354_004307_movie_t-2.jpg", "2020-0210-155354_004307_movie_t-1.jpg", "2020-0210-155354_004307_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the traffic cone.", "environment_perception": "The scene shows a narrow urban street leading toward a railway underpass, with dry pavement and slow-moving traffic in a short line. A white SUV ahead in the ego lane is inching forward and stopping, limiting movement toward the bridge. On the left side next to the ego lane, a red traffic cone intrudes into the roadway and a black van is parked at the curb, making the passage tighter. A cyclist is also moving forward near the right curb in the same direction, close to the ego lane, while pedestrians stand along both sidewalks by the shops. Road signs for no parking and the underpass height limit are visible.", "hazard_reasoning": "The main hazard is the red traffic cone partly blocking the lane on the left of the ego vehicle. This lane obstruction creates a construction-style hazard and could force the driver to adjust position or make an abrupt maneuver, so it requires high caution."}
{"id": "train_10027", "split": "train", "clip_key": "2020-0226-101332_008255_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "008255"}, "frames": ["2020-0226-101332_008255_movie_t-3.jpg", "2020-0226-101332_008255_movie_t-2.jpg", "2020-0226-101332_008255_movie_t-1.jpg", "2020-0226-101332_008255_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the turning vehicle", "environment_perception": "The scene shows an urban two-way single-lane road with a painted centerline and guardrails along the roadside, leading toward a nearby intersection. The road surface is dry, and traffic appears steady. A dark car ahead in the ego lane continues straight at a constant pace toward the junction. On the ahead-right oncoming side, a white car is making a right turn through the intersection in front of the ego vehicle. Another dark oncoming vehicle farther right keeps going straight past the junction. Pedestrians are waiting on the left sidewalk near a bus stop and are not in the roadway.", "hazard_reasoning": "The main concern is the white car turning right at the intersection ahead-right. Its path can intersect the ego vehicle’s route, creating a possible conflict at the junction. The driver should slow and yield to that turning vehicle to reduce collision risk."}
{"id": "train_10028", "split": "train", "clip_key": "2020-0210-155354_004307_movie", "source": {"subset": "drama", "scenario": "2020-0210-155354", "frame": "004307"}, "frames": ["2020-0210-155354_004307_movie_t-3.jpg", "2020-0210-155354_004307_movie_t-2.jpg", "2020-0210-155354_004307_movie_t-1.jpg", "2020-0210-155354_004307_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Be aware of the traffic cone.", "environment_perception": "This is a dense urban commercial road leading toward a railway underpass, with a narrow two-way lane and dry pavement. Traffic is moving slowly in a short line, and a white SUV ahead in the ego lane is inching forward and stopping. Along the left side of the ego lane, a red traffic cone intrudes into the lane while a black van is parked or stopped at the curb, making the available space tighter. A cyclist is moving forward near the right curb in the same direction, close to the ego lane. Pedestrians are present on both sidewalks near the shops, and a no-parking sign plus underpass height markings can be seen.", "hazard_reasoning": "The main hazard is the red traffic cone partly blocking the lane on the left side of the ego vehicle. It signals a lane obstruction, so the driver needs to be careful and avoid sudden swerves or lane deviation."}
{"id": "train_10029", "split": "train", "clip_key": "2020-0203-114632_004965_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_004965_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_004965_movie_t-3_augB1.jpg", "2020-0203-114632_004965_movie_t-2_augB1.jpg", "2020-0203-114632_004965_movie_t-1_augB1.jpg", "2020-0203-114632_004965_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "The scene shows an urban two-way road with one narrow lane in each direction, bending slightly to the right. The road surface is dry and clear, and traffic is moderate but slowing near a small work zone. Ahead in the ego lane, a white flatbed truck is stopped by the curb and takes up part of the lane, narrowing the path forward. Just past the crosswalk, a worker is crouched in front of the truck placing orange cones, with one cone positioned directly in front of the ego vehicle. On the right, white vans in the opposing lane continue straight past the area.", "hazard_reasoning": "The cone placed directly ahead of the ego car signals an active road work obstruction. Since it marks a construction area or blocked lane, the safest action is to stop and avoid driving into the work zone."}
{"id": "train_10030", "split": "train", "clip_key": "2020-0218-103119_001800_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "001800"}, "frames": ["2020-0218-103119_001800_movie_t-3.jpg", "2020-0218-103119_001800_movie_t-2.jpg", "2020-0218-103119_001800_movie_t-1.jpg", "2020-0218-103119_001800_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "The scene shows an urban multi-lane street bordered by tall buildings, with smooth asphalt and traffic thinning as it approaches an intersection. A white van directly ahead in the ego lane is signaling a right turn and coming to a stop while yielding to oncoming traffic, which slows the ego vehicle. In the adjacent lane ahead-left, a smaller white van keeps moving straight and edges slightly ahead. Ahead-right, a silver sedan continues straight at a steady pace, moving past the slower vehicles and reducing the open space. A side street is visible on the right, along with a crosswalk and open curbside area.", "hazard_reasoning": "The main hazard is the white van ahead in the ego lane, which is preparing to turn right and is waiting for oncoming cars. Because it is yielding at a red light, the ego driver needs to stop rather than enter the intersection on red, as doing so could lead to a collision."}
{"id": "train_10031", "split": "train", "clip_key": "2020-0226-101332_008255_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "008255"}, "frames": ["2020-0226-101332_008255_movie_t-3.jpg", "2020-0226-101332_008255_movie_t-2.jpg", "2020-0226-101332_008255_movie_t-1.jpg", "2020-0226-101332_008255_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the turning vehicle", "environment_perception": "This is an urban two-way single-lane road with a painted centerline and guardrails along the roadside, leading toward a nearby intersection. The road surface appears dry and clear, and traffic is moving normally. A dark vehicle ahead in the ego lane continues straight toward the junction at a steady speed. On the ahead-right, a white car from the oncoming side is making a right turn through the intersection and moving across the ego vehicle’s forward path. Another dark oncoming vehicle farther right goes straight past the intersection. Pedestrians are waiting on the left sidewalk by a bus stop and are not entering the road.", "hazard_reasoning": "The main concern is the white car turning right at the intersection ahead-right. Its turning path can cross in front of the ego vehicle, creating a possible conflict point. Because of that, the ego driver should be ready to yield to avoid a collision."}
{"id": "train_10032", "split": "train", "clip_key": "2020-0203-114632_004965_movie_t_augB1.jpg", "source": {"subset": "unknown", "scenario": "2020-0203-114632_004965_movie_t_augB1.jpg", "frame": ""}, "frames": ["2020-0203-114632_004965_movie_t-3_augB1.jpg", "2020-0203-114632_004965_movie_t-2_augB1.jpg", "2020-0203-114632_004965_movie_t-1_augB1.jpg", "2020-0203-114632_004965_movie_t_augB1.jpg"], "hazard_type": "road_construction", "severity_level": "HIGH", "warning_content": "Stop", "environment_perception": "A two-way urban road with a single lane in each direction bends slightly to the right. The surface looks dry and clear, while traffic is moderate and slows beside a small work zone. Ahead in the ego lane, a white flatbed truck is stopped close to the curb and partially blocks the lane, limiting the car’s path. Near the crosswalk, a worker in front of the truck is bent over placing orange cones, and one cone is positioned right in front of the ego vehicle. To the right, white vans in the opposing lane continue straight past the area, moving close to the work scene.", "hazard_reasoning": "The cone directly ahead signals road work and a lane obstruction. Since the ego car is approaching an active construction area, the safest action is to stop and avoid driving into the blocked section."}
{"id": "train_10033", "split": "train", "clip_key": "titan_clip_456_000660_movie", "source": {"subset": "titan", "scenario": "clip_456", "frame": "000660"}, "frames": ["titan_clip_456_000660_movie_t-3.jpg", "titan_clip_456_000660_movie_t-2.jpg", "titan_clip_456_000660_movie_t-1.jpg", "titan_clip_456_000660_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around traffic cones", "environment_perception": "This is a gently rising urban two-way road that bends to the right, with one lane in each direction and light traffic. A line of orange cones runs along the center of the roadway for roadwork, leaving less room near the right curb. Several construction workers are visible on the right within the coned-off area close to the ego lane, so they are directly relevant to passing traffic. A white work truck and an excavator are parked along the right side, adding to the narrowing of the passage. Pedestrians are on the left sidewalk and remain apart from the road, and there are no clear oncoming vehicles in view.", "hazard_reasoning": "The main hazard is the construction setup marked by the orange cones. Because the cones narrow the lane and direct vehicles around the work zone, the driver needs to pass through cautiously and avoid the marked area."}
{"id": "train_10034", "split": "train", "clip_key": "2020-0226-101332_008255_movie", "source": {"subset": "drama", "scenario": "2020-0226-101332", "frame": "008255"}, "frames": ["2020-0226-101332_008255_movie_t-3.jpg", "2020-0226-101332_008255_movie_t-2.jpg", "2020-0226-101332_008255_movie_t-1.jpg", "2020-0226-101332_008255_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the turning vehicle", "environment_perception": "The scene shows an urban two-way single-lane road with a painted centerline and guardrails along the sides, leading up to a nearby intersection. The road surface is dry and clear, and traffic appears steady. A dark vehicle ahead in the ego lane keeps moving straight toward the junction at a constant pace. On the ahead-right side of the oncoming lane, a white car is making a right turn through the intersection in front of the ego vehicle. Another dark oncoming car farther right continues straight past the junction. Pedestrians are waiting on the left sidewalk near a bus stop and are not entering the road.", "hazard_reasoning": "The main risk is the white car turning right at the intersection ahead-right. Because its path can cross in front of the ego vehicle, it presents the most relevant collision threat. The driver should slow and yield to the turning car to avoid a possible crash."}
{"id": "train_10035", "split": "train", "clip_key": "2020-0220-102630_109626_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "109626"}, "frames": ["2020-0220-102630_109626_movie_t-3.jpg", "2020-0220-102630_109626_movie_t-2.jpg", "2020-0220-102630_109626_movie_t-1.jpg", "2020-0220-102630_109626_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "This is an urban two-way roadway with one lane for the ego direction, marked by painted lane dividers and a clear paved surface, with moderate traffic around. A silver box truck ahead in the ego lane is slowing and lining up for a left turn into a side street, staying directly in front of us. In the opposite lane, a white minivan and a small van pass by normally without drifting into our path. An overhead blue direction sign sits above the road. On the left sidewalk, a cyclist travels parallel to the ego vehicle but remains safely separated by the curb, and several parked cars are present along the curb without blocking the lane.", "hazard_reasoning": "The main hazard is the silver truck ahead, which is reducing speed as it prepares to turn left from the ego lane. Because it remains in front of the ego vehicle, it creates a need to slow down and keep a safe following gap to avoid a possible collision with the turning truck."}
{"id": "train_10036", "split": "train", "clip_key": "titan_clip_456_000660_movie", "source": {"subset": "titan", "scenario": "clip_456", "frame": "000660"}, "frames": ["titan_clip_456_000660_movie_t-3.jpg", "titan_clip_456_000660_movie_t-2.jpg", "titan_clip_456_000660_movie_t-1.jpg", "titan_clip_456_000660_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Carefully manoeuvre around traffic cones", "environment_perception": "This is an urban two-way road with a single lane in each direction, gently rising and bending to the right. The road surface looks clear, but orange cones run along the center, creating a construction area that narrows space near the right side. Ahead on the right, several workers are active inside the coned-off zone close to the ego lane. A white work truck and an excavator are parked along the right edge, further reducing available room for travel. Pedestrians are visible on the left sidewalk moving alongside traffic, yet they stay separate from the roadway. No oncoming vehicle is visible in the scene.", "hazard_reasoning": "The main issue is the construction setup marked by the orange cones in the roadway. They restrict the lane width and channel vehicles around the work area, so the ego vehicle needs to proceed with caution and avoid the coned-off space."}
{"id": "train_10037", "split": "train", "clip_key": "titan_clip_1076_000456_movie", "source": {"subset": "titan", "scenario": "clip_1076", "frame": "000456"}, "frames": ["titan_clip_1076_000456_movie_t-3.jpg", "titan_clip_1076_000456_movie_t-2.jpg", "titan_clip_1076_000456_movie_t-1.jpg", "titan_clip_1076_000456_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cones.", "environment_perception": "The scene shows a narrow urban road without a centerline, bending slightly to the right and rising a little between buildings. The surface is clear and traffic is sparse. Red cones are placed along the left side of the lane ahead, indicating a work zone that cuts down the drivable space. A small group of pedestrians is visible farther ahead near the center of the road, moving away and limiting the path forward. On the right edge, another pedestrian is walking toward the camera beside the curb, close to the lane. Construction items and a wheelbarrow are also set along the left curb next to the cones, leaving even less room, and no other vehicles or signals appear.", "hazard_reasoning": "The main hazard is the line of red traffic cones on the left side ahead of the ego vehicle. They clearly indicate road construction and narrow the available lane, so the driver needs to proceed with caution to avoid contact while passing through the work area."}
{"id": "train_10038", "split": "train", "clip_key": "2020-0220-102630_109626_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "109626"}, "frames": ["2020-0220-102630_109626_movie_t-3.jpg", "2020-0220-102630_109626_movie_t-2.jpg", "2020-0220-102630_109626_movie_t-1.jpg", "2020-0220-102630_109626_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "The scene shows an urban two-way roadway with one lane in the ego direction, marked by painted dividers and smooth pavement, with moderate traffic. A silver box truck ahead of the ego vehicle is slowing and positioning for a left turn into a side street. In the opposite lane, a white minivan and a small van continue moving normally without drifting into our lane. An overhead blue direction sign is present. A cyclist is traveling along the left sidewalk beside the road, separated from the lane by a curb, and several parked vehicles remain at the curb without affecting travel.", "hazard_reasoning": "The main concern is the silver truck directly ahead, which is reducing speed while preparing to turn left. Because it is in front of the ego vehicle and changing course, the safest response is to slow down and keep a proper following gap to avoid a rear-end conflict."}
{"id": "train_10039", "split": "train", "clip_key": "2020-0220-102630_109626_movie", "source": {"subset": "drama", "scenario": "2020-0220-102630", "frame": "109626"}, "frames": ["2020-0220-102630_109626_movie_t-3.jpg", "2020-0220-102630_109626_movie_t-2.jpg", "2020-0220-102630_109626_movie_t-1.jpg", "2020-0220-102630_109626_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down to maintain safe distance.", "environment_perception": "The scene shows an urban two-way roadway with one forward lane for the ego vehicle, marked by painted lane dividers and smooth asphalt, with moderate traffic around it. A silver box truck ahead in the same lane is reducing speed and indicating a left turn into a side street, staying directly in front of us. In the opposite direction, a white minivan and a small van continue normally without drifting into our lane. An overhead blue direction sign hangs above the road. On the left sidewalk, a cyclist travels parallel to the ego vehicle behind a curb, and several parked vehicles remain along the curb without blocking the driving lane.", "hazard_reasoning": "The main hazard is the silver truck ahead, which is slowing in the ego lane because it is preparing to turn left. This creates a risk of closing in on the truck if the ego vehicle does not reduce speed, so the driver should brake and keep a safe following gap to avoid a collision."}
{"id": "train_10040", "split": "train", "clip_key": "titan_clip_69_000048_movie", "source": {"subset": "titan", "scenario": "clip_69", "frame": "000048"}, "frames": ["titan_clip_69_000048_movie_t-3.jpg", "titan_clip_69_000048_movie_t-2.jpg", "titan_clip_69_000048_movie_t-1.jpg", "titan_clip_69_000048_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a compact urban two-way intersection with one lane in each direction and no median, and the ego vehicle is traveling in the left lane on smooth road surface with light traffic around it. A yellow-and-green bus is positioned ahead in the center of the junction and is turning right into the street on the right, partially blocking the ego vehicle’s forward path and causing a slight slowdown. A white car is also creeping in from the left front and may cross ahead, while a person holding a bicycle stands on the right sidewalk near the corner and stays out of the roadway. Tall buildings line both sides of the streets, leaving clear visibility through the intersection.", "hazard_reasoning": "The main hazard is the bus turning right through the intersection. Because it is moving across the ego vehicle’s path, it can force a speed change and may require extra caution to keep a safe following distance."}
{"id": "train_10041", "split": "train", "clip_key": "titan_clip_1076_000456_movie", "source": {"subset": "titan", "scenario": "clip_1076", "frame": "000456"}, "frames": ["titan_clip_1076_000456_movie_t-3.jpg", "titan_clip_1076_000456_movie_t-2.jpg", "titan_clip_1076_000456_movie_t-1.jpg", "titan_clip_1076_000456_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around cones.", "environment_perception": "The scene shows a narrow urban road that bends slightly to the right and climbs gently uphill between buildings, with a clear surface and little traffic. Ahead, red cones are placed along the left side of the ego lane, indicating a work zone that tightens the drivable space. A small cluster of pedestrians is visible farther ahead near the center of the road, moving away and narrowing the path forward. On the right, one pedestrian walks toward the camera along the curb close to the lane edge. Construction items and a wheelbarrow are also positioned by the left curb near the cones, leaving even less room, and no other vehicles or signals stand out.", "hazard_reasoning": "The main hazard is the row of red traffic cones beside the left side of the ego lane ahead. They indicate road construction and reduce the usable width of the lane, so the vehicle must pass cautiously to avoid contact."}
{"id": "train_10042", "split": "train", "clip_key": "titan_clip_69_000048_movie", "source": {"subset": "titan", "scenario": "clip_69", "frame": "000048"}, "frames": ["titan_clip_69_000048_movie_t-3.jpg", "titan_clip_69_000048_movie_t-2.jpg", "titan_clip_69_000048_movie_t-1.jpg", "titan_clip_69_000048_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a compact urban two-way intersection with one lane in each direction and no center divider. The ego vehicle is traveling in the left lane on clear pavement with light traffic. Ahead in the junction, a yellow-and-green bus is making a right turn into the road on the right and is partly occupying the ego vehicle’s forward path, causing a momentary slowdown. A white car is also entering from the left front and creeping into the intersection, which could place it ahead of the ego vehicle. On the right corner sidewalk, a person holding a bicycle is waiting near a storefront and stays out of the roadway, while tall buildings line both streets closely.", "hazard_reasoning": "The main hazard is the bus turning through the intersection into the right-hand street. Because it is moving across the ego vehicle’s path, it may force a speed reduction or minor path adjustment. The appropriate response is to keep a safe following distance and continue behind the vehicle ahead."}
{"id": "train_10043", "split": "train", "clip_key": "titan_clip_1093_000360_movie", "source": {"subset": "titan", "scenario": "clip_1093", "frame": "000360"}, "frames": ["titan_clip_1093_000360_movie_t-3.jpg", "titan_clip_1093_000360_movie_t-2.jpg", "titan_clip_1093_000360_movie_t-1.jpg", "titan_clip_1093_000360_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "be cautious of cones ahead", "environment_perception": "The scene shows a quiet residential street with a gently curving narrow two-way roadway, dry pavement, and very little traffic, with no oncoming vehicles visible. On the right side ahead, a white utility truck is parked partly in the lane and stays still as the car approaches, leaving less room to pass. Traffic cones run along the right edge of the lane around this roadside work zone, continuing beyond the truck. Hoses and other equipment are also visible near the curb and slightly into the roadway, adding small edge obstructions.", "hazard_reasoning": "The cones indicate a roadside work area and narrow the driving space on the right. Because the lane is constrained and there are obstacles near the edge, the driver should slow down and stay well positioned to avoid contact."}
{"id": "train_10044", "split": "train", "clip_key": "titan_clip_1120_000570_movie", "source": {"subset": "titan", "scenario": "clip_1120", "frame": "000570"}, "frames": ["titan_clip_1120_000570_movie_t-3.jpg", "titan_clip_1120_000570_movie_t-2.jpg", "titan_clip_1120_000570_movie_t-1.jpg", "titan_clip_1120_000570_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cones", "environment_perception": "This is an urban two-way road with a single narrow lane in each direction and no median, bordered by tall buildings and light traffic. A line of traffic cones sits along the left edge of the lane. Near the ego vehicle on the left, several pedestrians are gathered at the curb, and one has stepped off the sidewalk into the ego lane, starting to cross toward the right. Ahead in the opposite lane, a city bus approaches slowly and then stops by the right curb while staying in its lane. Farther ahead on the right, a blue taxi is parked at the curb facing the ego vehicle and does not intrude into the lane.", "hazard_reasoning": "The visible cones along the left side suggest roadwork or a narrowed roadway. This creates the main hazard by requiring the driver to stay alert and position the vehicle carefully as it continues forward."}
{"id": "train_10045", "split": "train", "clip_key": "titan_clip_69_000048_movie", "source": {"subset": "titan", "scenario": "clip_69", "frame": "000048"}, "frames": ["titan_clip_69_000048_movie_t-3.jpg", "titan_clip_69_000048_movie_t-2.jpg", "titan_clip_69_000048_movie_t-1.jpg", "titan_clip_69_000048_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Follow the vehicle ahead", "environment_perception": "The scene shows a compact urban two-way intersection with one lane in each direction and no median. The ego vehicle is traveling in the left lane on smooth road surface with light traffic. Ahead, a yellow-and-green bus is positioned in the intersection and turning right into the street on the right, partly blocking the ego path and causing a slight slowdown. From the front-left, a white car is creeping into the junction and moving forward slowly, which could place it across the ego vehicle’s path. On the right corner sidewalk, a person holding a bicycle is waiting near a storefront and stays off the roadway. Tall buildings line both sides, and the intersecting streets are clearly visible.", "hazard_reasoning": "The main hazard is the yellow-and-green bus making a right turn in the middle of the intersection. Its movement can force the ego vehicle to reduce speed or adjust position, so the safest response is to stay behind it and keep a safe following distance."}
{"id": "train_10046", "split": "train", "clip_key": "titan_clip_1120_000570_movie", "source": {"subset": "titan", "scenario": "clip_1120", "frame": "000570"}, "frames": ["titan_clip_1120_000570_movie_t-3.jpg", "titan_clip_1120_000570_movie_t-2.jpg", "titan_clip_1120_000570_movie_t-1.jpg", "titan_clip_1120_000570_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cones", "environment_perception": "The scene shows a narrow two-way urban street with one lane in each direction and no center divider, bordered by tall buildings. Traffic is light and the road surface is clear. Several orange cones line the left edge of the ego lane. Near the left curb, a small group of pedestrians is standing, and one person has stepped off the sidewalk into the ego lane, starting to cross rightward. Ahead in the opposite lane, a city bus comes forward slowly and then pulls up by the right curb while staying in its lane. A blue taxi is parked farther ahead on the right side, facing the ego vehicle, and it does not block the lane.", "hazard_reasoning": "The most relevant hazard is the line of traffic cones along the left side of the lane. They suggest possible roadwork and a narrowed driving space, so the driver should stay alert and be prepared to adjust position."}
{"id": "train_10047", "split": "train", "clip_key": "titan_clip_1093_000360_movie", "source": {"subset": "titan", "scenario": "clip_1093", "frame": "000360"}, "frames": ["titan_clip_1093_000360_movie_t-3.jpg", "titan_clip_1093_000360_movie_t-2.jpg", "titan_clip_1093_000360_movie_t-1.jpg", "titan_clip_1093_000360_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "be cautious of cones ahead", "environment_perception": "The scene shows a calm residential roadway with a narrow two-way lane bending gently to the right and a clear, dry surface. Traffic is very light and there are no oncoming vehicles visible. On the right side ahead, a white utility truck is parked partly in the lane and stays still as the vehicle approaches, leaving less room to pass. A line of traffic cones runs along the right edge and continues beyond the truck, marking a roadside work area. Hoses and other equipment are also laid near the curb and slightly into the roadway, adding clutter along that side.", "hazard_reasoning": "The main concern is the cone-marked work zone narrowing the right side of the lane. This creates an obstacle and reduces available driving space, so the driver should slow down and stay properly positioned to avoid contact."}
{"id": "train_10048", "split": "train", "clip_key": "2020-0218-103119_011758_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "011758"}, "frames": ["2020-0218-103119_011758_movie_t-3.jpg", "2020-0218-103119_011758_movie_t-2.jpg", "2020-0218-103119_011758_movie_t-1.jpg", "2020-0218-103119_011758_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows an urban junction from a narrow one-lane side street, with a zebra crossing leading onto a two-way main road that has no median. A silver box truck ahead in the ego lane is turning right onto the main road, momentarily closing off the exit and controlling the car’s movement. On the main road, a white van and a small truck pass through the intersection as cross-traffic, and the turning truck yields to them. A pedestrian in a red jacket is waiting on the right sidewalk next to the crosswalk and stays off the roadway. A few vehicles are stopped or loading along the far curb, but they are not in the ego vehicle’s path.", "hazard_reasoning": "The silver truck directly in front is making a right turn, and while doing so it partly blocks the intersection. This reduces visibility of crossing cyclists and vehicles, so the safest response is to slow down and avoid a collision risk."}
{"id": "train_10049", "split": "train", "clip_key": "2020-0207-101955_088800_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "088800"}, "frames": ["2020-0207-101955_088800_movie_t-3.jpg", "2020-0207-101955_088800_movie_t-2.jpg", "2020-0207-101955_088800_movie_t-1.jpg", "2020-0207-101955_088800_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be cautious of construction cones ahead", "environment_perception": "The scene shows an elevated urban expressway on a bridge with two to three lanes in the same direction, bordered by guardrails and clear pavement, with moderate traffic moving smoothly. A white box truck is directly ahead in the ego lane at a steady pace. On the right side, a work area contains construction trucks, a silver car, and a few workers standing still, while traffic cones mark off the area and squeeze the outer lane, directing moving vehicles leftward. A small group of vehicles continues ahead in the same direction, and a blue overhead exit sign is visible on the right.", "hazard_reasoning": "The main visible hazard is road construction along the right side, indicated by the cones and the coned-off work zone. This creates a possible lane restriction and requires caution because the roadway may be obstructed near the work area."}
{"id": "train_10050", "split": "train", "clip_key": "2020-0207-101955_088800_movie", "source": {"subset": "drama", "scenario": "2020-0207-101955", "frame": "088800"}, "frames": ["2020-0207-101955_088800_movie_t-3.jpg", "2020-0207-101955_088800_movie_t-2.jpg", "2020-0207-101955_088800_movie_t-1.jpg", "2020-0207-101955_088800_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be cautious of construction cones ahead", "environment_perception": "The scene shows an elevated urban highway bridge with two to three lanes traveling in the same direction, bordered by guardrails and smooth pavement, with traffic moving calmly. A white box truck is directly ahead in the ego lane at a steady pace, maintaining the gap. On the right side, construction trucks, a silver car, and a few workers are stationary inside a coned-off work area; the cones run along the right edge, indicating road construction and reducing the usable outer lane so vehicles stay left. Farther ahead, several vehicles continue straight without any lane changes, and a blue overhead exit sign is visible on the right.", "hazard_reasoning": "The main hazard is the line of traffic cones marking road construction on the right. This suggests a work zone and possible lane narrowing or obstruction ahead, so the driver should proceed carefully."}
{"id": "train_10051", "split": "train", "clip_key": "2020-0129-144857_056237_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "056237"}, "frames": ["2020-0129-144857_056237_movie_t-3.jpg", "2020-0129-144857_056237_movie_t-2.jpg", "2020-0129-144857_056237_movie_t-1.jpg", "2020-0129-144857_056237_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the black sedan.", "environment_perception": "The scene shows a broad urban two-way road leading into a large intersection beneath pedestrian bridges, with a painted island on the right and clear pavement. Traffic is moderate and slows near the junction. A black sedan comes from the right-side street and turns across the front of the ego vehicle, briefly taking the ego lane through the intersection. Ahead in the left-side lane, a flatbed truck continues straight at low speed. Oncoming trucks and vans are lined up on the opposite side to the right of center, inching forward within their lanes without moving into ours. Overhead signs and a blue straight-ahead arrow are visible above the intersection.", "hazard_reasoning": "The main hazard is the black sedan turning from the right and crossing in front of the ego vehicle. Because it occupies the ego path while turning, the driver should yield and watch for possible interference with the ego vehicle’s route."}
{"id": "train_10052", "split": "train", "clip_key": "titan_clip_422_000054_movie", "source": {"subset": "titan", "scenario": "clip_422", "frame": "000054"}, "frames": ["titan_clip_422_000054_movie_t-3.jpg", "titan_clip_422_000054_movie_t-2.jpg", "titan_clip_422_000054_movie_t-1.jpg", "titan_clip_422_000054_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "The scene shows an urban two-way road with one narrow lane in each direction, bordered by mid-rise buildings. Traffic is light and the ego vehicle is moving straight ahead on a smooth surface. The left side of the lane is narrowed by roadworks, with red cones lining the left curb and another cone placed ahead on the left side of the ego lane. A uniformed worker is standing slightly left of center and appears to be guiding the work area. A small truck is farther ahead in the same lane, moving slowly, while two pedestrians remain on the right sidewalk near the curb and do not enter the road.", "hazard_reasoning": "The key hazard is the red traffic cone positioned on the left side of the ego lane directly ahead. It creates a local obstruction in the driving path, so the driver needs to steer and pass it carefully to avoid contact and continue safely."}
{"id": "train_10053", "split": "train", "clip_key": "2020-0218-103119_011758_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "011758"}, "frames": ["2020-0218-103119_011758_movie_t-3.jpg", "2020-0218-103119_011758_movie_t-2.jpg", "2020-0218-103119_011758_movie_t-1.jpg", "2020-0218-103119_011758_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows an urban junction from a narrow one-lane side street, with a zebra crossing leading onto a two-way main road that has no median; the road surface is clear and traffic on the main road is moderate. A silver box truck ahead in the ego lane is making a right turn onto the main road, momentarily obstructing the exit and controlling the ego vehicle’s movement. A white van and another small truck move across the intersection on the main road as cross-traffic, and the turning truck gives way to them. A pedestrian in a red jacket is standing on the right sidewalk next to the crosswalk and does not enter the roadway. Some vehicles are stopped or loading along the far curb, but they are not in the ego vehicle’s path.", "hazard_reasoning": "The silver truck directly ahead is turning right and partly blocking the junction. Because it reduces visibility of crossing cyclists and vehicles, the safest response is to slow down and avoid a possible collision."}
{"id": "train_10054", "split": "train", "clip_key": "2020-0218-103119_011758_movie", "source": {"subset": "drama", "scenario": "2020-0218-103119", "frame": "011758"}, "frames": ["2020-0218-103119_011758_movie_t-3.jpg", "2020-0218-103119_011758_movie_t-2.jpg", "2020-0218-103119_011758_movie_t-1.jpg", "2020-0218-103119_011758_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Slow down", "environment_perception": "The scene shows an urban junction at the end of a narrow one-lane side street, with a zebra crossing leading into a two-way main road and no median in between. The road surface is clear, and traffic on the main road appears moderate. A silver box truck ahead of the ego vehicle is making a right turn onto the main road, momentarily occupying the exit and controlling the ego car’s movement. A white van and a smaller truck pass through the intersection on the main road as cross-traffic, while the turning truck yields to them. A person in a red jacket is waiting on the right sidewalk by the crosswalk and does not enter the road. A few vehicles are stopped or loading along the far curb, but they are not in the ego vehicle’s path.", "hazard_reasoning": "The main concern is the silver truck directly ahead as it turns right. Its movement narrows the available space and limits visibility into the intersection, so crossing traffic may be harder to see. Because of that partial blockage, the ego vehicle should slow down to reduce collision risk."}
{"id": "train_10055", "split": "train", "clip_key": "2020-0129-144857_056237_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "056237"}, "frames": ["2020-0129-144857_056237_movie_t-3.jpg", "2020-0129-144857_056237_movie_t-2.jpg", "2020-0129-144857_056237_movie_t-1.jpg", "2020-0129-144857_056237_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the black sedan.", "environment_perception": "The scene shows a broad urban two-way road leading into a large intersection beneath pedestrian overpasses, with a painted channelizing island along the right edge and clear pavement. Traffic is moderate and appears to slow near the junction. A black sedan enters from the right-side street and turns across the ego vehicle’s route, briefly blocking the intended path. Ahead in the left-side lane beyond the intersection, a flatbed truck proceeds straight at a slow pace. On the opposite side, trucks and vans wait and creep forward in their lanes without moving into the ego lane. Overhead signs are visible, including a blue straight-ahead arrow.", "hazard_reasoning": "The main risk is the black sedan turning from the right and crossing directly in front of the ego vehicle. Because it occupies the path through the intersection, the driver should yield and be ready for an unexpected crossing movement."}
{"id": "train_10056", "split": "train", "clip_key": "2020-0129-144857_056237_movie", "source": {"subset": "drama", "scenario": "2020-0129-144857", "frame": "056237"}, "frames": ["2020-0129-144857_056237_movie_t-3.jpg", "2020-0129-144857_056237_movie_t-2.jpg", "2020-0129-144857_056237_movie_t-1.jpg", "2020-0129-144857_056237_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the black sedan.", "environment_perception": "The scene shows a multi-lane urban arterial leading into a broad intersection under pedestrian bridges, with a painted channelizing island on the right and clear pavement. Traffic is moderate and slows near the junction. A black sedan comes in from the right-side street and turns across the ego vehicle’s route, briefly taking up the ego lane through the intersection. Ahead in the left-side lane past the intersection, a flatbed truck keeps moving straight at a slow pace. On the opposite side of the road, several oncoming trucks and vans are queued near the center-right, advancing slowly without moving into the ego lane. Overhead signs and a blue straight-ahead arrow are visible above the junction.", "hazard_reasoning": "The key risk is the black sedan turning from the right and crossing directly in front of the ego vehicle. Because it is occupying the path through the intersection, the driver should be prepared to yield, as the sedan could interfere with the ego vehicle’s movement unexpectedly."}
{"id": "train_10057", "split": "train", "clip_key": "titan_clip_222_000054_movie", "source": {"subset": "titan", "scenario": "clip_222", "frame": "000054"}, "frames": ["titan_clip_222_000054_movie_t-3.jpg", "titan_clip_222_000054_movie_t-2.jpg", "titan_clip_222_000054_movie_t-1.jpg", "titan_clip_222_000054_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the white semi-truck crossing.", "environment_perception": "A light-traffic urban two-way road with one lane in each direction leads into an intersection. A white semi-truck with a green tarpaulin is moving from left to right across the junction ahead, briefly occupying the ego vehicle’s path. Slightly beyond it, a pedestrian enters the crosswalk from the left and continues walking rightward. On the right sidewalk beside a restaurant, three pedestrians are standing near the curb and staying off the roadway.", "hazard_reasoning": "The main risk is the white semi-truck crossing from the left toward the right in front of the ego vehicle. Because it is moving through the intersection and could interfere with the driving path, the safe response is to yield and avoid any collision."}
{"id": "train_10058", "split": "train", "clip_key": "titan_clip_367_000612_movie", "source": {"subset": "titan", "scenario": "clip_367", "frame": "000612"}, "frames": ["titan_clip_367_000612_movie_t-3.jpg", "titan_clip_367_000612_movie_t-2.jpg", "titan_clip_367_000612_movie_t-1.jpg", "titan_clip_367_000612_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the cone", "environment_perception": "This is a tight urban side street with one unmarked lane and no median, bordered by shops. The road surface looks worn but unobstructed overall, and there are no moving vehicles. A pedestrian ahead is walking away near the middle of the lane, slightly reducing the available space. On the right, a dark van is stopped with its rear doors open and equipment nearby, taking up part of the roadway. Next to it at the right edge, a worker is standing and moving around a green traffic cone that extends into the ego lane, making the path narrower. Parked bicycles and storefront signs on both sides add to the confined feel of the street.", "hazard_reasoning": "The main hazard is the green traffic cone intruding from the right into the ego lane. Because it partially obstructs the lane, the driver needs to steer around it to pass safely."}
{"id": "train_10059", "split": "train", "clip_key": "titan_clip_422_000054_movie", "source": {"subset": "titan", "scenario": "clip_422", "frame": "000054"}, "frames": ["titan_clip_422_000054_movie_t-3.jpg", "titan_clip_422_000054_movie_t-2.jpg", "titan_clip_422_000054_movie_t-1.jpg", "titan_clip_422_000054_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "The scene shows a calm urban two-way road with one narrow lane in each direction between mid-rise buildings. The car is continuing straight on smooth pavement with sparse traffic. A roadwork area narrows the left side of the ego lane, marked by red cones along the left curb, and one cone is positioned ahead on the left edge of the lane. A uniformed worker stands slightly left of the lane center, slowly signaling toward the work zone, so the driver must pass with care. A small truck is farther ahead in the same direction moving slowly, while two pedestrians remain on the right sidewalk near the curb and do not enter the roadway.", "hazard_reasoning": "The key hazard is the red traffic cone located on the left side of the ego lane ahead of the vehicle. Because it sits in the driving path, the driver needs to manoeuvre carefully around it to prevent contact and keep the car safely on course."}
{"id": "train_10060", "split": "train", "clip_key": "titan_clip_222_000054_movie", "source": {"subset": "titan", "scenario": "clip_222", "frame": "000054"}, "frames": ["titan_clip_222_000054_movie_t-3.jpg", "titan_clip_222_000054_movie_t-2.jpg", "titan_clip_222_000054_movie_t-1.jpg", "titan_clip_222_000054_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the white semi-truck crossing.", "environment_perception": "This is an urban two-way road with a single lane in each direction leading into an intersection, and the road surface appears clear with sparse traffic. A white semi-truck covered with green tarpaulin is moving across the intersection from left to right ahead of the ego vehicle, briefly occupying the lane in front. A pedestrian farther ahead is entering the crosswalk from the left and walking rightward, while three people on the right sidewalk by a restaurant remain off the roadway near the curb.", "hazard_reasoning": "The main concern is the white semi-truck crossing from left to right in front of the ego path. Its movement through the intersection creates a direct conflict point and could block the vehicle’s way, so the driver should yield and proceed only when it is safe to do so."}
{"id": "train_10061", "split": "train", "clip_key": "titan_clip_222_000054_movie", "source": {"subset": "titan", "scenario": "clip_222", "frame": "000054"}, "frames": ["titan_clip_222_000054_movie_t-3.jpg", "titan_clip_222_000054_movie_t-2.jpg", "titan_clip_222_000054_movie_t-1.jpg", "titan_clip_222_000054_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Yield to the white semi-truck crossing.", "environment_perception": "This is an urban two-way road with a single lane in each direction leading into an intersection, and the roadway appears clear with light traffic. A white semi-truck covered with green tarpaulin is moving across from left to right straight ahead, briefly obstructing the ego lane. A pedestrian farther ahead is entering the crosswalk from the left and proceeding rightward across the driving path. On the right sidewalk near a restaurant, three pedestrians are standing by the curb and staying off the roadway.", "hazard_reasoning": "The main concern is the white semi-truck with green covering crossing from the left side to the right side in front of the car. Because it can enter the vehicle’s path at the intersection, the driver should slow and yield to avoid a possible collision and pass through safely."}
{"id": "train_10062", "split": "train", "clip_key": "2020-0205-103411_001361_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "001361"}, "frames": ["2020-0205-103411_001361_movie_t-3.jpg", "2020-0205-103411_001361_movie_t-2.jpg", "2020-0205-103411_001361_movie_t-1.jpg", "2020-0205-103411_001361_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cone", "environment_perception": "A city street with two lanes bends to the right next to a fenced construction area. The road surface looks clear, there is no median, and traffic is moving slowly. The ego vehicle is behind a black sedan in the left lane, and that car comes to a stop at a zebra crossing, causing the flow to slow. On the right ahead, a red taxi in the neighboring lane continues creeping forward beside the sedan as the crossing is handled. Several pedestrians are visible crossing from right to left at the crosswalk, while others remain waiting, so vehicles are yielding. A pedestrian-crossing sign is posted on the left fence, and a red traffic cone is placed near the left side of the ego vehicle by the barrier.", "hazard_reasoning": "The red traffic cone close to the left side of the ego vehicle indicates a construction-related obstruction near the driving path. It is the most relevant hazard because it marks the work area and could interfere with vehicle movement, so the driver should pay attention to its position."}
{"id": "train_10063", "split": "train", "clip_key": "titan_clip_579_000438_movie", "source": {"subset": "titan", "scenario": "clip_579", "frame": "000438"}, "frames": ["titan_clip_579_000438_movie_t-3.jpg", "titan_clip_579_000438_movie_t-2.jpg", "titan_clip_579_000438_movie_t-1.jpg", "titan_clip_579_000438_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of cones ahead", "environment_perception": "This is an urban two-way road with one undivided lane and clear pavement, and there is little traffic with no oncoming vehicles visible. In front of the ego vehicle, a silver car is parked or stopped along the left curb, reducing the open space in the lane. Farther ahead, a white van is also near the left curb in the same direction. A pedestrian is visible on the right sidewalk walking away and staying off the road. A cluster of traffic cones is set along the left edge beyond the closer car, making the roadway feel tighter.", "hazard_reasoning": "The main hazard is the group of traffic cones on the left side of the road. They suggest a work zone or road obstruction ahead, so the driver should slow down and pass carefully to avoid the constricted area."}
{"id": "train_10064", "split": "train", "clip_key": "2020-0203-114632_056942_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "056942"}, "frames": ["2020-0203-114632_056942_movie_t-3.jpg", "2020-0203-114632_056942_movie_t-2.jpg", "2020-0203-114632_056942_movie_t-1.jpg", "2020-0203-114632_056942_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "The scene shows an urban multi-lane roadway beneath an elevated structure, with a guardrail along the left side and clear pavement. Traffic is moderate, but the ego lane is stopped near an intersection. Directly ahead in the ego lane, a white and green bus is stationary and appears to be waiting to turn left, blocking the lane. To the right, a white flatbed truck in the neighboring lane continues straight through the junction and moves away. Farther right, several cars also proceed straight through the intersection, while pedestrians are visible along the left sidewalk behind the barrier near the corner.", "hazard_reasoning": "The main hazard is the white and green bus stopped ahead in the ego lane while waiting to turn left. Because it is directly in front of the ego vehicle and occupying the lane, the driver needs to stop to avoid a collision with this stationary vehicle."}
{"id": "train_10065", "split": "train", "clip_key": "2020-0205-103411_001361_movie", "source": {"subset": "drama", "scenario": "2020-0205-103411", "frame": "001361"}, "frames": ["2020-0205-103411_001361_movie_t-3.jpg", "2020-0205-103411_001361_movie_t-2.jpg", "2020-0205-103411_001361_movie_t-1.jpg", "2020-0205-103411_001361_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of traffic cone", "environment_perception": "The scene shows an urban two-lane road bending to the right alongside a fenced construction area. The road surface looks clear, there is no median, and traffic is moving slowly. The ego vehicle is behind a black sedan in the left lane, and that car is stopping near a zebra crossing, which is slowing the flow. On the right, a red taxi in the neighboring lane is inching ahead beside the sedan as it passes the crossing. Several pedestrians are crossing from right to left while others are waiting, so the vehicles are yielding. A pedestrian-crossing sign appears on the left fence, and a red traffic cone is placed near the left side of the ego vehicle by the barrier, indicating the work zone.", "hazard_reasoning": "The red traffic cone on the left side of the ego vehicle signals a construction-related hazard close to the driving path. Its position means the driver should pay attention and avoid getting too close to the work area."}
{"id": "train_10066", "split": "train", "clip_key": "titan_clip_579_000438_movie", "source": {"subset": "titan", "scenario": "clip_579", "frame": "000438"}, "frames": ["titan_clip_579_000438_movie_t-3.jpg", "titan_clip_579_000438_movie_t-2.jpg", "titan_clip_579_000438_movie_t-1.jpg", "titan_clip_579_000438_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of cones ahead", "environment_perception": "This appears to be an urban two-way street with a single undivided lane and clear pavement, with light traffic and no oncoming vehicles in sight. In the ego lane, a silver car is pulled up along the left curb, reducing the available space. Farther ahead on the same side, a white van is also stopped near the curb. A pedestrian on the right sidewalk is walking away beside a storefront and is not in the roadway. Near the silver car, several traffic cones line the left edge of the road, making the passage narrower.", "hazard_reasoning": "The main concern is the cluster of traffic cones on the left side of the road. They suggest roadworks or a temporary obstruction ahead, so the driver should slow down and proceed carefully through the narrowed area."}
{"id": "train_10067", "split": "train", "clip_key": "titan_clip_578_000498_movie", "source": {"subset": "titan", "scenario": "clip_578", "frame": "000498"}, "frames": ["titan_clip_578_000498_movie_t-3.jpg", "titan_clip_578_000498_movie_t-2.jpg", "titan_clip_578_000498_movie_t-1.jpg", "titan_clip_578_000498_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "This is a narrow urban two-way street with smooth pavement and little traffic, where a roadside work zone limits the available space. Cones are placed along both sides of the road, including one on the right, so the ego vehicle has only a narrow central passage. In front on the left, a utility truck with its boom raised is stopped partly in the ego lane and is not moving, while a worker stands near the lane edge inside the coned area close to the driving path. A bicycle is parked farther ahead on the right by the sidewalk and does not intrude into the lane.", "hazard_reasoning": "The main concern is the roadworks setup, especially the cone on the right side of the road and the narrowed passage it creates. This requires the driver to steer carefully to avoid hitting the obstruction and to pass through the constrained lane safely."}
{"id": "train_10068", "split": "train", "clip_key": "2020-0203-114632_056942_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "056942"}, "frames": ["2020-0203-114632_056942_movie_t-3.jpg", "2020-0203-114632_056942_movie_t-2.jpg", "2020-0203-114632_056942_movie_t-1.jpg", "2020-0203-114632_056942_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "The scene shows an urban multi-lane roadway beneath an elevated structure, with a guardrail along the left side and smooth pavement ahead. Traffic is moderate, but the ego lane is stopped close to an intersection. A white and green bus sits directly in front of the ego vehicle in the same lane, waiting to make a left turn and blocking forward travel. In the lane to the right, a white flatbed truck continues straight through the junction and moves away. Farther right, additional cars also proceed straight across the intersection. Pedestrians are visible on the left sidewalk behind the barrier near the corner.", "hazard_reasoning": "The main hazard is the white and green bus stopped ahead in the ego lane because it is preparing to turn left. Since it is occupying the lane and not moving forward, the driver needs to remain stopped to avoid hitting the bus."}
{"id": "train_10069", "split": "train", "clip_key": "2020-0203-114632_056942_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "056942"}, "frames": ["2020-0203-114632_056942_movie_t-3.jpg", "2020-0203-114632_056942_movie_t-2.jpg", "2020-0203-114632_056942_movie_t-1.jpg", "2020-0203-114632_056942_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "MEDIUM", "warning_content": "Stop", "environment_perception": "The scene shows an urban multi-lane roadway beneath an elevated structure, with a guardrail along the left side. The road surface appears clear, and traffic is moderate, but the ego vehicle is stopped near an intersection. Directly ahead in the ego lane, a white and green bus is stationary and waiting to make a left turn, blocking the lane. To the right, a white flatbed truck in the neighboring lane continues straight through the intersection, and farther right other cars also proceed normally. Pedestrians are visible along the left sidewalk behind the barrier near the corner.", "hazard_reasoning": "The main hazard is the stopped white and green bus ahead in the ego lane, since it is waiting to turn left and is blocking forward movement. The ego driver needs to remain stopped to avoid a collision with this stationary vehicle."}
{"id": "train_10070", "split": "train", "clip_key": "2020-0203-114632_086961_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "086961"}, "frames": ["2020-0203-114632_086961_movie_t-3.jpg", "2020-0203-114632_086961_movie_t-2.jpg", "2020-0203-114632_086961_movie_t-1.jpg", "2020-0203-114632_086961_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "A signalized city intersection beneath an elevated roadway is visible, with clear lane markings and zebra crosswalks, and traffic moving at a moderate pace. A large box truck is traveling across the intersection ahead of the ego vehicle, temporarily occupying the forward path. A silver hatchback is also moving across from the right side toward the left side of the intersection, further contributing to the blockage. Another small car waits near the stop line on the far right, remaining stopped as the cross traffic passes.", "hazard_reasoning": "The silver hatchback is crossing directly in front of the ego vehicle from right to left, putting it in the vehicle’s immediate path. Because it is traversing the roadway ahead, the safest response is to stop and avoid a possible collision."}
{"id": "train_10071", "split": "train", "clip_key": "2020-0203-114632_086961_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "086961"}, "frames": ["2020-0203-114632_086961_movie_t-3.jpg", "2020-0203-114632_086961_movie_t-2.jpg", "2020-0203-114632_086961_movie_t-1.jpg", "2020-0203-114632_086961_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "A signalized urban intersection beneath an elevated roadway is visible, with clear zebra crossings and moderate traffic flow. A large box truck is moving across the lane ahead, temporarily obstructing the ego vehicle’s forward path. At the same time, a silver hatchback is crossing from the right side of the intersection toward the left, and a small car on the far right is waiting near the stop line.", "hazard_reasoning": "The main concern is the silver hatchback crossing directly in front of the ego vehicle from right to left. Because it is cutting across the intended path, the safest response is to stop and avoid a possible collision."}
{"id": "train_10072", "split": "train", "clip_key": "titan_clip_578_000498_movie", "source": {"subset": "titan", "scenario": "clip_578", "frame": "000498"}, "frames": ["titan_clip_578_000498_movie_t-3.jpg", "titan_clip_578_000498_movie_t-2.jpg", "titan_clip_578_000498_movie_t-1.jpg", "titan_clip_578_000498_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the cone", "environment_perception": "This is a narrow urban two-way street with smooth pavement and little traffic, aside from the ego vehicle. A roadside work zone narrows the available space, with cones placed along both sides and a single passable route through the middle. On the left ahead, a utility truck with an elevated boom is stopped partly in the ego lane, and a worker is standing near it at the edge of the coned-off area, close to the driving path. Farther ahead on the right, a bicycle is parked by the sidewalk and remains outside the lane.", "hazard_reasoning": "The traffic cone on the right side of the road is the key obstruction in view. It reduces the usable driving space and calls for careful maneuvering to avoid contact, making the roadwork area the main hazard."}
{"id": "train_10073", "split": "train", "clip_key": "2020-0127-132751_047528_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "047528"}, "frames": ["2020-0127-132751_047528_movie_t-3.jpg", "2020-0127-132751_047528_movie_t-2.jpg", "2020-0127-132751_047528_movie_t-1.jpg", "2020-0127-132751_047528_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of the cone ahead", "environment_perception": "The scene shows an elevated urban two-way roadway with one lane in each direction, bordered by tall noise barriers. The road surface is reddish, dry, and clear, with traffic flowing normally. A white car ahead in the ego lane is moving at a steady pace. To the right, beyond a narrow divider marked by flexible posts, a red oncoming car is closest, and a white van follows behind it in the opposite lane. Orange-and-white posts continue along the divider, and an orange-and-white traffic cone is placed on the right side of our lane near those posts.", "hazard_reasoning": "The main concern is the traffic cone positioned at the right edge of the lane. It is a road-side obstruction that drivers should notice early to keep the vehicle properly centered and avoid drifting too close to it."}
{"id": "train_10074", "split": "train", "clip_key": "2020-0127-132751_047528_movie", "source": {"subset": "drama", "scenario": "2020-0127-132751", "frame": "047528"}, "frames": ["2020-0127-132751_047528_movie_t-3.jpg", "2020-0127-132751_047528_movie_t-2.jpg", "2020-0127-132751_047528_movie_t-1.jpg", "2020-0127-132751_047528_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Be aware of the cone ahead", "environment_perception": "The scene shows an elevated urban two-way roadway with one lane in each direction, bordered by tall noise barriers. The road surface is reddish, dry, and clear, and the traffic appears to be moving normally. A white car ahead in the ego lane is traveling at a steady pace. To the right, beyond a narrow divider marked by flexible posts, an oncoming red car passes closest, with a white van behind it in the opposite lane. Orange-and-white posts continue along the median, and an orange-and-white traffic cone is placed on the right edge of our lane near those posts.", "hazard_reasoning": "The main concern is the traffic cone positioned on the right side of the lane. It may affect lane placement, so the driver should notice it early and keep a safe line while passing."}
{"id": "train_10075", "split": "train", "clip_key": "2020-0228-102841_070318_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "070318"}, "frames": ["2020-0228-102841_070318_movie_t-3.jpg", "2020-0228-102841_070318_movie_t-2.jpg", "2020-0228-102841_070318_movie_t-1.jpg", "2020-0228-102841_070318_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the traffic cones", "environment_perception": "The scene shows a narrow two-way urban road under elevated structures, with the pavement curving gently to the right toward a construction entrance. Traffic is sparse and no moving vehicles are present. In front of the ego vehicle, orange traffic cones run along the left side and narrow part of the lane, pushing the usable path slightly right near the work area. Several pedestrians are visible near the gate on the left shoulder, staying close to the roadway and possibly moving into the driving path. One more person is waiting near the crosswalk at the far left curb and has not stepped out. Blue pedestrian signs, barriers, and scaffolding identify the construction zone, while hedges and railings confine the road and no other clear hazards stand out.", "hazard_reasoning": "The main concern is the line of traffic cones directly ahead. They signal roadworks and partially obstruct the lane, so the ego vehicle needs to pass through this area with caution to avoid the work zone and keep a safe path."}
{"id": "train_10076", "split": "train", "clip_key": "titan_clip_134_000570_movie", "source": {"subset": "titan", "scenario": "clip_134", "frame": "000570"}, "frames": ["titan_clip_134_000570_movie_t-3.jpg", "titan_clip_134_000570_movie_t-2.jpg", "titan_clip_134_000570_movie_t-1.jpg", "titan_clip_134_000570_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to the pedestrian", "environment_perception": "This is a quiet urban commercial road with one lane in each direction and no median, approaching a small unsignalized junction with a zebra crossing. A black van is moving through the intersection ahead, coming from the left and heading to the right, crossing in front of the ego vehicle. Multiple pedestrians are already in the crosswalk ahead, moving in both directions and taking up the ego lane. A vehicle remains stopped by the left curb near the corner, and a no-entry sign is visible for the side street on the left.", "hazard_reasoning": "The main risk is the black van traveling across the intersection from left to right while pedestrians are present nearby in the crossing. Because the pedestrians are close and the van is passing through the ego vehicle’s path, the driver should slow and yield, since a pedestrian could move into the van’s path."}
{"id": "train_10077", "split": "train", "clip_key": "titan_clip_134_000570_movie", "source": {"subset": "titan", "scenario": "clip_134", "frame": "000570"}, "frames": ["titan_clip_134_000570_movie_t-3.jpg", "titan_clip_134_000570_movie_t-2.jpg", "titan_clip_134_000570_movie_t-1.jpg", "titan_clip_134_000570_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to the pedestrian", "environment_perception": "An urban commercial street with one lane in each direction and no median opens into a small unsignalized intersection with a zebra crossing. The road surface is smooth and traffic is light. A black van is turning across the intersection ahead, moving from left to right and briefly cutting through the ego vehicle’s path. Several pedestrians are present in the crosswalk ahead, moving both left-to-right and right-to-left and taking up the ego lane, which slows the approach. A vehicle is parked or stopped at the left curb near the corner, and a no-entry sign is visible for the side street on the left.", "hazard_reasoning": "The black van crossing the intersection from left to right is the primary hazard because it is moving through the ego path. The situation calls for caution and yielding, especially since pedestrians are crossing nearby and could further interfere with the van’s path."}
{"id": "train_10078", "split": "train", "clip_key": "titan_clip_367_000612_movie", "source": {"subset": "titan", "scenario": "clip_367", "frame": "000612"}, "frames": ["titan_clip_367_000612_movie_t-3.jpg", "titan_clip_367_000612_movie_t-2.jpg", "titan_clip_367_000612_movie_t-1.jpg", "titan_clip_367_000612_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre around the cone", "environment_perception": "This is a narrow urban side street with a single unmarked lane and no central divider, lined by shops and some parked bicycles. The road surface is worn but unobstructed overall, and there are no moving vehicles. A pedestrian is walking away ahead near the middle of the lane, slightly limiting the available space. On the right side, a dark van is stationary with its rear doors open and work items nearby, taking up part of the roadway. Next to it, a worker is standing and moving around a green traffic cone that extends into the ego lane, making the right edge of the path tighter.", "hazard_reasoning": "The green traffic cone is the main hazard because it sits partly inside the ego lane on the right. Since it blocks part of the drivable space, the driver should steer around it to pass safely."}
{"id": "train_10079", "split": "train", "clip_key": "2020-0203-114632_086961_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "086961"}, "frames": ["2020-0203-114632_086961_movie_t-3.jpg", "2020-0203-114632_086961_movie_t-2.jpg", "2020-0203-114632_086961_movie_t-1.jpg", "2020-0203-114632_086961_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Stop to avoid collision", "environment_perception": "A signalized urban intersection beneath an elevated expressway is visible, with clear lane markings and zebra crosswalks, and traffic flow looks moderate. A large box truck is moving laterally ahead of the ego vehicle and is partially blocking the path through the intersection. A silver hatchback is also crossing in front of the ego car from the right side toward the left, while a small car on the far right is waiting near the stop line.", "hazard_reasoning": "The main hazard is the silver hatchback crossing directly in front of the ego vehicle from right to left. Because it is traversing the ego car’s path, the safest response is to stop and avoid a collision."}
{"id": "train_10080", "split": "train", "clip_key": "2020-0228-102841_070318_movie", "source": {"subset": "drama", "scenario": "2020-0228-102841", "frame": "070318"}, "frames": ["2020-0228-102841_070318_movie_t-3.jpg", "2020-0228-102841_070318_movie_t-2.jpg", "2020-0228-102841_070318_movie_t-1.jpg", "2020-0228-102841_070318_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Manoeuvre carefully around the traffic cones", "environment_perception": "An urban one-way-looking street under elevated structures curves gently to the right toward a construction entrance. The road surface is clear, traffic is sparse, and no moving vehicles are present. In front of the ego vehicle, orange cones are arranged along the left side and encroach into the lane, narrowing the available path as it approaches the work area. Several pedestrians are visible ahead near the gate on the left shoulder, staying close to the roadway and possibly moving into the travel path. Another person remains by the far-left curb near the crosswalk without stepping off. Blue pedestrian signs, barriers, scaffolding, hedges, and railings frame the construction zone, with no additional obstacles seen.", "hazard_reasoning": "The main issue is the line of traffic cones directly ahead of the ego car. They signal active roadworks and reduce usable lane space, creating a need to slow and pass with caution to avoid the work zone and maintain a safe trajectory."}
{"id": "train_10081", "split": "train", "clip_key": "titan_clip_134_000570_movie", "source": {"subset": "titan", "scenario": "clip_134", "frame": "000570"}, "frames": ["titan_clip_134_000570_movie_t-3.jpg", "titan_clip_134_000570_movie_t-2.jpg", "titan_clip_134_000570_movie_t-1.jpg", "titan_clip_134_000570_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to the pedestrian", "environment_perception": "A light-traffic urban street with one lane in each direction and no median approaches a small uncontrolled intersection with a zebra crossing. Ahead, a black van is moving through the junction from left to right and briefly cuts across the ego vehicle’s forward path. Multiple pedestrians are also in the crosswalk, moving in both directions and occupying the lane ahead, which slows the ego vehicle’s progress. A vehicle remains stopped at the left curb near the corner, and a no-entry sign is visible for the side street on the left.", "hazard_reasoning": "The main concern is the black van crossing through the center of the intersection from left to right. It is the most relevant moving vehicle hazard, and the driver should be cautious because nearby pedestrians are in or near its path and could create an interaction risk."}
{"id": "train_10082", "split": "train", "clip_key": "2020-0203-114632_004040_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "004040"}, "frames": ["2020-0203-114632_004040_movie_t-3.jpg", "2020-0203-114632_004040_movie_t-2.jpg", "2020-0203-114632_004040_movie_t-1.jpg", "2020-0203-114632_004040_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "This is a two-way urban street with one lane in each direction, bordered by shops and railings, and the road surface looks clear near a zebra crossing. A small flatbed truck is stopped ahead in the ego lane at the crossing, partially blocking the route. A pedestrian in the crosswalk moves left to right beside the truck and briefly intrudes into the ego lane. An oncoming white van keeps coming straight in the opposite lane. A red traffic cone is placed just ahead of the ego car near the stop line, with more cones surrounding the truck, and a blue straight-ahead sign appears on the right.", "hazard_reasoning": "The most immediate hazard is the red traffic cone directly in front of the ego vehicle. Its placement signals an obstruction or road work area ahead, meaning the driver needs to stop to avoid hitting it or entering the blocked area."}
{"id": "train_10083", "split": "train", "clip_key": "2020-0213-143552_012491_movie", "source": {"subset": "drama", "scenario": "2020-0213-143552", "frame": "012491"}, "frames": ["2020-0213-143552_012491_movie_t-3.jpg", "2020-0213-143552_012491_movie_t-2.jpg", "2020-0213-143552_012491_movie_t-1.jpg", "2020-0213-143552_012491_movie_t.jpg"], "hazard_type": "making_turn_vehicle", "severity_level": "LOW", "warning_content": "Yield to white van merging ahead", "environment_perception": "A light-traffic urban two-way road with one lane in each direction bends right toward a signalized intersection, with smooth pavement and no center median. At the junction, a white van enters from the left and crosses into the ego vehicle’s lane, ending up directly ahead of the car. A second passenger car also approaches from the same left side but remains behind the van and does not cut into the ego path. Traffic lights are visible beyond the intersection, and hatched road markings channel the movement through the turn.", "hazard_reasoning": "The white van is the key concern because it is moving from the left side into the ego lane and positioning itself in front of the vehicle. Since it merges directly into the ego car’s path, the driver should slow and yield to reduce the chance of a collision."}
{"id": "train_10084", "split": "train", "clip_key": "2020-0203-114632_004040_movie", "source": {"subset": "drama", "scenario": "2020-0203-114632", "frame": "004040"}, "frames": ["2020-0203-114632_004040_movie_t-3.jpg", "2020-0203-114632_004040_movie_t-2.jpg", "2020-0203-114632_004040_movie_t-1.jpg", "2020-0203-114632_004040_movie_t.jpg"], "hazard_type": "road_construction", "severity_level": "MEDIUM", "warning_content": "Stop immediately", "environment_perception": "This is an urban two-way street with one lane in each direction, lined by shops and railings, and the road surface appears clear near a zebra crossing. A small flatbed truck is stationary ahead in the ego lane at the crossing, partially blocking the lane and slowing traffic. A pedestrian in the crosswalk is moving from left to right next to the truck and briefly encroaches into the ego lane. An oncoming white van continues straight in the opposite lane. A red traffic cone sits directly in front of the ego vehicle near the stop line, with more cones placed around the truck. A blue straight-ahead sign is posted on the right.", "hazard_reasoning": "The most immediate issue is the red cone positioned in front of the ego car. It signals a work zone or obstruction in the road ahead, so the driver should stop to avoid hitting the cone or entering a restricted area."}